阅读说明：本技术 送风机 (Air blower ) 是由 金宰贤 郑惠仁 朴欣喜 金容民 白承浩 金起东 崔硕浩 朴亨镐 金厚辰 吴时荣 于 2021-05-11 设计创作，主要内容包括：本发明涉及送风机,本发明实施例的送风机包括：底座；壳体,配置在所述底座的上侧,形成有空气流入口和空气吐出口；风扇,配置在所述壳体的内部；旋转盘,与所述壳体连接,可旋转地配置在所述底座的上侧；马达,产生使所述旋转盘旋转的动力；以及轴承,配置在所述旋转盘和所述底座之间,固定于所述旋转盘,可移动地被支撑在所述底座。由此具有随着配置于旋转盘的轴承被支撑在底座并旋转,送风机的旋转被底座和轴承稳定地支撑的优点。(The invention relates to a blower, the blower of the embodiment of the invention comprises: a base; a housing disposed on the upper side of the base and having an air flow inlet and an air discharge port; a fan disposed inside the housing; a rotary plate connected to the housing and rotatably disposed on an upper side of the base; a motor generating power to rotate the rotating disk; and a bearing disposed between the rotary plate and the base, fixed to the rotary plate, and movably supported by the base. This has an advantage that the rotation of the blower is stably supported by the base and the bearing as the bearing disposed on the rotary disk is supported and rotated by the base.)

1. A blower, comprising:

a base;

a housing disposed on the upper side of the base and having an air flow inlet and an air discharge port;

a fan disposed inside the housing;

a rotary plate connected to the housing and rotatably disposed on an upper side of the base;

a motor generating power to rotate the rotating disk; and

and a bearing which is disposed between the rotary plate and the base, is fixed to the rotary plate, and is movably supported by the base.

2. The blower according to claim 1, wherein,

the base further comprises a track that is configured to,

the rail is disposed at an upper side of the base and extends in a rotation direction of the rotating disk,

the bearing is disposed on an upper side of the rail and moves in an extending direction of the rail.

3. The blower according to claim 2, wherein,

further comprising:

a first gear connected to the motor and fixed to the rotating disk; and

a second gear engaged with the first gear and fixed to the base,

the first gear moves along the periphery of the second gear.

4. The blower according to claim 1, wherein,

further comprises a shaft main body rotatably coupled to the base,

the rotary plate further comprises a shaft seat protruding from the rotation center of the rotary plate to the base,

the shaft main body is inserted into the shaft seat and fixed to the rotating disk.

5. The blower according to claim 4, wherein,

also comprises a shaft bearing which is arranged on the shaft,

the shaft bearing is configured to surround the shaft receptacle, at least a portion of the shaft bearing rotating with the rotating disk.

6. The blower according to claim 1, wherein,

when the rotary disk rotates, the bearing moves in the rotation direction of the rotary disk while rotating about a support shaft coupled to the rotary disk.

7. The blower according to claim 6, wherein,

the support shaft extends in the up-down direction,

a portion of a bottom surface of the bearing is in contact with the base, and the remaining portion is spaced upward from the base.

8. A blower, comprising:

a base;

a housing disposed on the upper side of the base and having an air flow inlet and an air discharge port;

a fan disposed inside the housing;

a rotary plate connected to the housing and rotatably disposed on an upper side of the base; and

and a motor that generates power for rotating the rotary plate, is disposed above the rotary plate, and is supported by the rotary plate.

9. The blower according to claim 8,

the motor is fixed to the rotating disk and rotates together with the rotating disk.

10. The blower according to claim 8,

the rotary disk includes a motor insertion slot,

at least a portion of the motor is inserted into the motor insertion groove.

Technical Field

The present invention relates to a Blower (Blower), and more particularly, to a rotary structure of a Blower.

Background

The blower circulates air in an indoor space or forms an air current flowing toward a user by generating a flow of air. When the blower is provided with a filter, the blower can improve the quality of indoor air by purifying contaminated air in the room.

In order to adjust the wind direction of the air discharged from the blower, it is necessary to rotate the main body of the blower, and the blower may be provided with a bearing that supports the rotation of the main body.

However, the conventional blower has a problem that, when a structure for improving the blowing performance and the filtering performance of the blower is additionally disposed in the main body, there is no bearing structure with high durability capable of supporting an increased load.

In addition, the conventional blower has a problem that the position of the motor for rotating the main body is limited in order to avoid interference with the rotary disk.

Korean patent laid-open No. 10-1814574 discloses a bearing structure for supporting the rotation of a blower and a motor disposed on a base for providing a rotational force, but has a problem in that the bearing is disposed at the center of a main body, thereby not uniformly supporting the load of the main body dispersed toward the outside in the radial direction. Further, the space inside the ring-shaped bearing is wasted, and the motor is only provided in the base to avoid interference with the bearing and the turntable, which causes a problem of a decrease in space efficiency. In addition, since a sufficient space is not secured between the structure that does not rotate in the fan and the structure that rotates, there is a problem that the life of the bearing and the main body is shortened due to friction generated between the structures by the rotation.

Korean patent laid-open No. 10-1370267 discloses a bearing structure that supports a shaft to smoothly rotate within a sleeve, but it merely supports the rotation of the shaft and does not describe a structure for supporting the entire load of a main body.

Documents of the prior art

Patent document

Patent document 1: korean patent No. 10-1814574

Patent document 2: korean patent No. 10-1370267

Disclosure of Invention

The invention aims to provide a blower which stably supports rotation drive.

It is also an object of the present invention to provide a blower provided with a support structure having improved durability.

It is another object of the present invention to provide a blower that minimizes frictional resistance caused by rotation.

It is another object of the present invention to provide a blower having a compact structure for supporting a rotary drive.

It is another object of the present invention to provide a blower that minimizes the power required for rotation.

It is another object of the present invention to provide a blower that prevents a structure from being detached by rotation.

It is another object of the present invention to provide a blower that prevents twisting of electric wires due to rotation.

Another object of the present invention is to provide a blower capable of integrally managing electrical components.

The object of the present invention is not limited to the above-mentioned object, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a blower of an embodiment of the present invention includes: a base; a housing disposed on the upper side of the base and having an air flow inlet and an air discharge port; and a fan disposed inside the housing.

The forced draught blower includes: a rotary plate connected to the housing and rotatably disposed on an upper side of the base; a motor generating power to rotate the rotating disk; and a bearing disposed between the rotary plate and the base, fixed to the rotary plate, and movably supported by the base; thus, an additional cover for housing the bearing is not required, the bearing is directly supported by the base, and the rotary plate can stably rotate.

The motor may be supported by the rotating disk, and the disposition position thereof may not be limited to a specific region.

The motor may be fixed at an upper side of the rotating disk to rotate together with the rotating disk, whereby the utilization rate of a space formed at a lower side of the rotating disk may be improved.

At least a part of the motor can be inserted into a motor insertion groove formed on the rotary disc and opened along the vertical direction, thereby preventing the motor from being separated during rotation.

The blower may further include a rail provided at an upper side of the base and extending in a rotation direction of the rotating disk.

The bearing may be disposed at an upper side of the rail and may be movable in an extending direction of the rail, whereby a rotation path of the bearing may be guided by the rail.

The blower may further include: a first gear connected to the motor and fixed to the rotating disk; and a second gear engaged with the first gear and fixed to the base.

The first gear may be movable along a periphery of the second gear.

The bearing may be configured to be farther from the rotation center of the rotating disk than the first gear, thereby enabling to minimize a power transmission path transmitted through the gears by bringing a position where the gears are engaged close to the rotation center.

The first gear, the second gear, and the rail may be arranged side by side in a horizontal direction, whereby the height of the driving unit can be reduced.

The blower may further include a shaft bearing, at least a portion of which rotates together with the rotating disk, whereby abrasion of the rotating disk can be prevented.

The shaft bearing may be configured to surround the shaft receptacle, thereby being capable of preventing shaking of the rotating disk by dual support based on the shaft receptacle and the shaft bearing.

The blower may further include a shaft main body rotatably coupled to the base.

The blower may further include a shaft seat protruding from a rotation center of the rotating disk toward the base.

The shaft body may be inserted into the shaft seat and fixed to the rotating disk.

The rotating disk may include: a column handle having a space formed inside thereof; and a ring-shaped member having a shaft insertion opening through which the shaft body passes, the ring-shaped member covering the space above the stem.

The shaft main body may pass through the shaft insertion port and at least a portion of the shaft main body may be positioned inside the space, thereby preventing the shaft main body from being separated from the rotation center.

The shaft body may pass through the shaft seat.

The shaft seat may include: a convex portion facing radially inward; and a body fastening hole opened in the convex portion in the up-down direction; thereby improving the shape of the shaft seat and the shaft main body.

The rail may protrude from the top surface of the base to the upper side, and a gap may be formed between the rotary plate and the base, whereby the interval between the rotary plate and the base may be maintained.

The rotating disk may include: a first seating part for seating the motor; a second placement portion disposed outside the first placement portion for placement of the housing; and a step portion connecting the first and second placement portions; whereby the housing can be stably fixed to the rotating disk.

The bearing may include: a wheel rotatably supported at the base; and a support shaft penetrating the wheel and fixed to the rotating disk.

The motor may be disposed to be spaced outward from a rotation center of the rotary plate.

At least one of the plurality of bearings may be disposed at a position facing the motor with reference to a rotation center of the rotary plate, thereby preventing a phenomenon in which a center of gravity is concentrated at a specific portion.

When the rotating disk rotates, the bearing can move in the rotating direction of the rotating disk while rotating around the supporting shaft, thereby minimizing the wear of the bearing due to friction by the rotating action based on the two rotating shafts.

The support shaft may extend in an up-down direction.

A portion of the bottom surface of the bearing may be in contact with the base and the remaining portion may be spaced upward from the base, whereby wear of the bearing due to rotation can be minimized.

The support shaft may extend in a radial direction of the rotating disk.

The bearing may be movable in a rotation direction of the rotating disk in a state where a circumferential surface thereof is in contact with the base, thereby being capable of minimizing wear of the bearing due to friction by a rolling action.

Specifics with respect to other embodiments are contained in the detailed description and drawings.

According to the blower of the present invention, one or more of the following effects are provided.

First, since the bearing disposed on the rotary disk is supported by the base to rotate, there is an advantage in that the rotation of the blower is stably supported by the base and the bearing.

Secondly, since the plurality of bearings are arranged at intervals in the circumferential direction, the load of the main body is uniformly distributed to the plurality of bearings, and therefore, there is an advantage that the life of the bearings can be increased.

Thirdly, since the vertical interval between the rotary plate and the base is maintained by the bearing, there is an advantage that the frictional resistance generated between the rotary plate and the base can be eliminated.

Fourthly, since the empty space on the radially inner side of the bearing is used as a space for arranging the first gear and the second gear, there is also an advantage that the rotation support structure can be made compact.

Fifth, since the first gear and the second gear are disposed inside the bearing, the power transmission path is shortened, and thus, there is an advantage that the power required for rotation is reduced.

Sixth, there is an advantage that the bearing can be prevented from being disengaged during rotation by a rail structure guiding a rotation path of the bearing.

Seventh, since the electric wire is inserted from the center of the rotation shaft, there is an advantage that the electric wire can be prevented from being twisted by the rotation.

Eighth, since the substrate and the motor are disposed together on the upper side of the rotary plate, there is an advantage that the electric components connected through the electric wires can be integrally managed.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

Drawings

Fig. 1 is a perspective view of a blower according to an embodiment of the present invention.

Fig. 2 is a longitudinal sectional perspective view taken along the line P-P' of the blower shown in fig. 1.

Fig. 3 is a longitudinal sectional perspective view taken along line Q-Q' of the blower shown in fig. 1.

Fig. 4 is a top perspective view of a blower of an embodiment of the present invention.

Fig. 5 is a transverse sectional perspective view taken along the line R-R' of the blower shown in fig. 1.

Fig. 6 is a diagram showing an operation example of the airflow converter according to the embodiment of the present invention.

Fig. 7 is a structural view of an airflow converter according to an embodiment of the present invention.

Fig. 8 is a longitudinal sectional perspective view of a lower portion of a blower of an embodiment of the present invention.

Fig. 9 is a lower structure view of the blower according to the embodiment of the present invention.

Fig. 10 is a perspective view of a driving unit according to an embodiment of the present invention.

Fig. 11 is an exploded perspective view of a driving unit according to an embodiment of the present invention.

Fig. 12 is a top view of a base in accordance with an embodiment of the present invention.

Fig. 13 is a view of the drive unit according to the embodiment of the present invention, which is exploded and viewed from the lower side.

Fig. 14 is a bottom view of the rotary plate of an embodiment of the present invention.

Fig. 15 is a longitudinal sectional perspective view of a drive unit of an embodiment of the present invention.

Fig. 16 is an exploded perspective view of a driving unit according to another embodiment of the present invention.

Fig. 17 is a top view of a base of another embodiment of the present invention.

Fig. 18 is a view of a drive unit according to another embodiment of the present invention, which is exploded and viewed from the lower side.

Fig. 19 is a bottom view of a rotating disk of another embodiment of the present invention.

Fig. 20 is a longitudinal sectional perspective view of a drive unit of another embodiment of the present invention.

Fig. 21 is a perspective view of a portion of a drive unit of yet another embodiment of the present invention.

Fig. 22 is a top perspective view of the structure shown in fig. 21.

Fig. 23 is a longitudinal sectional perspective view of a drive unit of a further embodiment of the present invention.

Fig. 24 is a longitudinal cross-sectional perspective view of the structure shown in fig. 21.

Fig. 25 is an internal structural view of a part of a drive unit of a further embodiment of the present invention.

Description of the reference numerals

100: the suction module 120: lower casing

130: the filter 140: suction grille

160: substrate cover 200: air supply module

210: the tower base 220: first tower

230: second tower 240: heating device

300: the fan assembly 310: fan motor

320: the fan 400: airflow converter

500: the driving unit 510: base seat

520: rotating the disk 530: motor with a stator having a stator core

540: first gear 550: second gear

560: shaft bearing 570: shaft body

600: the driving unit 700: drive unit

Detailed Description

The advantages, features and methods for achieving the same of the present invention will be more apparent by referring to the drawings and detailed embodiments described later. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, and the embodiments are only for the purpose of more fully disclosing the present invention, so as to more fully suggest the scope of the present invention to those skilled in the art to which the present invention pertains, and the present invention is defined only by the scope of the claims. Throughout the specification, like reference numerals denote like structural elements.

The present invention will be described below with reference to the drawings for describing a blower based on an embodiment of the present invention.

First, the overall structure of the blower 1 will be described with reference to fig. 1. Fig. 1 shows the overall appearance of a blower 1.

The blower 1 may also be referred to by other names such as an air conditioner, an air cleaning fan, and an air cleaner from the viewpoint of sucking air and circulating the sucked air.

The blower 1 according to an embodiment of the present invention may include an intake module 100 that sucks air and a blower module 200 that discharges the sucked air.

The blower 1 may have a cylindrical shape whose diameter becomes smaller as approaching the upper portion, and the blower 1 may have a conical or Truncated cone (Truncated cone) shape as a whole. In the case where the cross section becomes narrower as approaching the upper side, there is an advantage that the center of weight becomes lower and the risk of falling over by receiving an external impact is reduced. However, unlike the present embodiment, the present embodiment may not be configured such that the cross section is narrowed toward the upper side.

The suction module 100 may be formed to have a diameter gradually smaller as it approaches the upper end, and the air supply module 200 may be formed to have a diameter gradually smaller as it approaches the upper end.

The suction module 100 may include a driving unit 500, a lower case 120 disposed at an upper side of the driving unit 500, and a filter 130 disposed at an inner side of the lower case 120.

The driving unit 500 may be seated on the ground and may support the load of the blower 1. The lower case 120 and the filter 130 may be disposed at an upper side of the driving unit 500.

The lower case 120 may have a cylindrical shape, and a space for disposing the filter 130 may be formed inside the lower case 120. The lower housing 120 may be formed with a suction hole 121 opened toward the inside of the lower housing 120. The suction hole 121 may be formed in plural along the circumference of the lower housing 120.

The filter 130 may have a cylindrical shape in an outer shape, which filters impurities contained in the air flowing in through the suction port 121.

The blower module 200 may be disposed in a separated manner of two vertically extending columns. The air supply module 200 may include a first tower 220 and a second tower 230 configured to be spaced apart from each other. The air supply module 200 may include a tower base 210 connecting a first tower 220, a second tower 230 with the suction module 100. The tower base 210 may be disposed above the suction module 100 and below the first tower 220 and the second tower 230.

The tower base 210 may have a cylindrical shape, and may be disposed on the upper side of the suction module 100 to form a continuous outer circumferential surface with the suction module 100.

The upper surface of the tower base 210 may be formed to be concave to the lower side, and the tower base upper surface 211 extending in the front-rear direction may be formed. The first tower 220 may extend upward from one side 211a of the tower base upper surface 211, and the second tower 230 may extend upward from the other side 211b of the tower base upper surface 211.

The tower base 210 may distribute the filtered air supplied from the inside of the suction module 100 and provide the distributed air to the first and second towers 220 and 230, respectively.

The tower base 210, the first tower 220, and the second tower 230 may be manufactured as separate components, or may be manufactured as one body. The tower base 210 and the first tower 220 may form a continuous outer circumferential surface of the blower 1, and the tower base 210 and the second tower 230 may form a continuous outer circumferential surface of the blower 1.

Unlike the present embodiment, the first tower 220 and the second tower 230 may be directly assembled to the suction module 100 without the tower base 210, or may be integrally manufactured with the suction module 100.

The first tower 220 and the second tower 230 may be configured to be spaced apart from each other, and a blowing gap S may be formed between the first tower 220 and the second tower 230.

It can be understood that the blowing gap S is a space between the first tower 220 and the second tower 230 opened forward, rearward, and above.

The outer shape of the blower module 200 including the first tower 220, the second tower 230, and the blowing gap S may be a truncated cone shape.

The discharge ports 222 and 232 formed in the first tower 220 and the second tower 230, respectively, can discharge air toward the blowing gap S. When it is necessary to distinguish the discharge ports 222, 232, the discharge port formed in the first tower 220 is referred to as a first discharge port 222, and the discharge port formed in the second tower 230 is referred to as a second discharge port 232.

The first tower 220 and the second tower 230 may be configured to be symmetrical with respect to the blowing gap S. By symmetrically arranging the first tower 220 and the second tower 230, the flow of air is uniformly distributed in the blowing gap S, which is more advantageous for the control of the horizontal air flow and the ascending air flow.

The first tower 220 may include a first tower shell 221 forming an outer shape of the first tower 220, and the second tower 230 may include a second tower shell 231 forming an outer shape of the second tower 230. The first tower casing 221 and the second tower casing 231 may be referred to as an upper casing disposed above the lower casing 120 and having discharge ports 222 and 232 for discharging air, respectively. The lower housing 120 and the upper housings 221, 231 may belong to a "housing" and may be a sub-concept of the housing.

The first discharge port 222 may be formed to extend in the vertical direction in the first tower 220, and the second discharge port 232 may be formed to extend in the vertical direction in the second tower 230.

The flow direction of the air discharged from the first tower 220 and the second tower 230 may be formed in the front-rear direction.

The width of the blowing gap S, which is an interval between the first tower 220 and the second tower 230, may be the same in the up-down direction. However, the upper end width of the blowing gap S may be formed to be larger or smaller than the lower end width.

By forming the blowing gap S so that the width thereof is constant in the up-down direction, the air flowing forward of the blowing gap S can be uniformly distributed in the up-down direction.

In the case where the width of the upper side and the width of the lower side are different, the flow velocity of the wider side becomes lower, and a velocity deviation may occur with the vertical direction as a reference. When the flow velocity of the air varies in the vertical direction, the supply amount of the purified air may vary depending on the vertical position of the air discharge.

The air discharged from the first discharge port 222 and the second discharge port 232 may be supplied to the user after merging in the blowing gap S.

The air discharged from the first discharge port 222 and the air discharged from the second discharge port 232 may be supplied to the user after merging at the blowing gap S, instead of flowing to the user separately.

The blowing gap S can be used as a space for merging and mixing (Mix) the discharged air. The air around the blower 1 forms an indirect air flow by the discharged air discharged to the blowing gap S, and the air around the blower 1 can also flow toward the blowing gap S.

By merging the air discharged from the first discharge port 222 and the air discharged from the second discharge port 232 at the blowing gap S, the straight-ahead movement of the discharged air can be improved. By merging the air discharged from the first discharge port 222 and the air discharged from the second discharge port 232 at the blowing gap S, the air around the first tower 220 and the second tower 230 can be guided to flow forward along the outer peripheral surface of the blower module 200 by the indirect air flow.

The first tower shell 221 may include: a first tower upper end 221a forming an upper side surface of the first tower 220; a first tower front end 221b forming a front surface of the first tower 220; a first tower rear end 221c forming a rear surface of the first tower 220; a first outer sidewall 221d forming an outer circumferential surface of the first tower 220; and a first inner sidewall 221e forming an inner side surface of the first tower 20.

The second tower housing 231 may include: a second tower upper end 231a forming an upper side surface of the second tower 230; a second tower front end 231b forming a front surface of the second tower 230; a second tower rear end 231c forming a rear surface of the second tower 230; a second outer sidewall 231d forming an outer circumferential surface of the second tower 230; and a second inner sidewall 231e forming an inner side of the second tower 230.

The first and second outer sidewalls 221d and 231d may be formed to protrude toward the radial outside, thereby forming outer circumferential surfaces of the first and second towers 220 and 230, respectively.

The first inner sidewall 221e and the second inner sidewall 231e may be formed to protrude toward the inner side in the radial direction, thereby forming inner circumferential surfaces of the first tower 220 and the second tower 230, respectively.

The first discharge port 222 may be formed to extend in the vertical direction in the first inner side wall 221e, and may be formed to open radially inward. The second discharge port 232 may be formed to extend in the vertical direction in the second inner side wall 231e, and may be opened to the radially inner side.

The first discharge port 222 may be formed closer to the first tower rear end 221c than the first tower front end 221 b. The second discharge port 232 may be formed closer to the second tower rear end 231c than the second tower front end 231 b.

The first plate body slit 223 through which the first airflow converter 401 described later is inserted may be formed to extend in the vertical direction on the first inner side wall 221 e. A second plate body slit 233 through which a second airflow converter 402 described later is inserted may be formed in the second inner side wall 231e so as to extend in the vertical direction. The first plate body slit 223 and the second plate body slit 233 may be formed to be opened toward the radially inner side.

First plate body slit 223 may be formed at a position closer to first tower front end 221b than first tower rear end 221 c. The second plate body slit 233 may be formed at a position closer to the second tower front end 231b than the second tower rear end 231 c. The first plate body slit 223 and the second plate body slit 233 may be formed to face each other.

Next, the internal structure of the blower 1 will be described with reference to fig. 2 and 3. Fig. 2 is a sectional perspective view of the blower 1 taken along line P-P 'shown in fig. 1, and fig. 3 is a sectional perspective view of the blower 1 taken along line Q-Q' shown in fig. 1.

Referring to fig. 2, a substrate assembly 150 for controlling the operation of the fan assembly 300 and the heater 240 may be disposed above the driving unit 500. A control space 150S in which the substrate assembly 150 is disposed may be formed at an upper side of the driving unit 500.

The filter 130 may be disposed on an upper side of the control space 150S. The filter 130 may have a cylindrical shape, and a cylindrical filter hole 131 may be formed inside the filter 130.

The air flowing in through the suction hole 121 may flow toward the filter hole 131 via the filter 130.

An intake grill 140 may be disposed on an upper side of the filter 130, and the air flowing upward through the filter 130 passes through the intake grill 140. The suction grill 140 may be disposed between the fan assembly 300 and the filter 130. The suction grill 140 may prevent a user's hand from entering the fan assembly 300 when the lower case 120 is removed and the filter 130 is separated from the blower 1.

The fan assembly 300 may be disposed at an upper side of the filter 130 and generates a suction force to the air outside the blower 1.

The air outside the blower 1 may sequentially pass through the suction hole 121 and the filter hole 131 and flow to the first and second towers 220 and 230 by the driving of the fan assembly 300.

A pressure applying space 300s in which the fan assembly 300 is disposed may be formed between the filter 130 and the air blowing module 200.

A first distribution space 220s through which the air passing through the pressurizing space 300s flows upward may be formed inside the first tower 220, and a second distribution space 230s through which the air passing through the pressurizing space 300s flows upward may be formed inside the second tower 230. The tower base 210 may distribute the air passing through the pressurizing space 300s to the first distribution space 220s and the second distribution space 230 s. The tower base 210 may be a Channel (Channel) connecting the first tower 220, the second tower 230, and the fan assembly 300.

The first distribution space 220s may be formed between the first outer sidewall 221d and the first inner sidewall 221 e. The second distribution space 230s may be formed between the second outer sidewall 231d and the second inner sidewall 231 e.

The first tower 220 may include a first flow guide 224 guiding a flow direction of air within the first distribution space 220 s. The first flow guide 224 may be arranged in plural numbers spaced from each other in the vertical direction.

First flow guide 224 may be formed to protrude from first tower rear end 221c toward first tower front end 221 b. First flow guide 224 may be spaced apart from first tower front end 221b in the fore-aft direction. The first flow guide 224 may extend to be inclined downward as approaching the front. Among the plurality of first flow guides 224, the first flow guide 224 disposed on the upper side is inclined downward at a smaller angle.

The second tower 230 may include a second flow guide 234 guiding a flow direction of air within the second distribution space 230 s. The second flow guide 234 may be vertically arranged in a plurality spaced apart from each other.

The second flow guide 234 may be formed to protrude from the second tower rear end 231c toward the second tower front end 231 b. The second flow guide 234 may be spaced apart from the second tower front end 231b in the front-to-rear direction. The second flow guide 234 may extend to be inclined downward as approaching the front. Among the plurality of second flow guides 234, the second flow guide 234 disposed on the upper side is inclined downward at a smaller angle.

The first flow guide 224 may guide the air discharged from the fan assembly 300 to flow toward the first discharge port 222. The second flow guide 234 may guide the air discharged from the fan assembly 300 to flow toward the second discharge port 232.

Referring to fig. 3, the fan assembly 300 may include: a fan motor 310 for generating power; a motor case 330 accommodating the fan motor 310; a fan 320 rotated by receiving power from the fan motor 310; a diffuser (diffuser)340 guiding a flow direction of the air pressurized by the fan 320.

The fan motor 310 may be disposed at an upper side of the fan 320, and may be connected to the fan 320 by a motor shaft 311 extending downward from the fan motor 310.

The motor housing 330 may include: a first motor case 331 covering an upper portion of the fan motor 310; and a second motor case 332 covering a lower portion of the fan motor 310.

The first discharge opening 222 may extend upward from one side 211a of the tower base upper surface 211. The first spout lower end 222d may be formed on one side 211a of the tower base upper surface 211.

The first discharge port 222 may be formed spaced below the first tower upper end 221 a. The first discharge port upper end 222c may be formed spaced below the first tower upper end 221 a.

The first discharge port 222 may extend to be inclined in the up-down direction. The first discharge port 222 may be formed to be inclined forward as approaching the upper side. The first discharge port 222 may extend to be inclined rearward with respect to the vertical axis Z extending in the vertical direction.

The first discharge port front end 222a and the first discharge port rear end 222b may extend to be inclined in the up-down direction, and may extend parallel to each other. The first discharge port front end 222a and the first discharge port rear end 222b may extend to be inclined rearward with respect to the vertical axis Z extending in the vertical direction.

The first tower 220 may include a first spit guide 225, the first spit guide 225 directing air within the first distribution space 220s toward the first spit outlet 222.

The first tower 220 may be symmetrical to the second tower 230 with reference to the blowing gap S, and may have the same shape and structure as the second tower 230. The description of the first tower 220 above may be equally applicable to the second tower 230.

The blower 1 may include a heater 240 disposed in the upper housing. A plurality of heaters 240 may be arranged corresponding to the first discharge port 222 and the second discharge port 232, respectively. The heater 240 may include a first heater 241 disposed at the first tower 220 and a second heater 242 disposed at the second tower 230. The first heater 241 may be disposed to be inclined upward and downward in correspondence with the first discharge port 222, and the second heater 242 may be disposed to be inclined upward and downward in correspondence with the second discharge port 232.

The heater 240 may receive power through a power supply device based on a Switched Mode Power Supply (SMPS) system. The heater 240 can receive electric power from the external power supply 20 and heat the air discharged to the blowing gap S through the discharge ports 222, 232.

Next, an air discharge structure of the blower 1 for inducing the Coanda effect (Coanda effect) effect will be described with reference to fig. 4 and 5. Fig. 4 shows a form in which the blower 1 is seen from the upper side to the right below, and fig. 5 shows a form in which the blower 1 is cut along the line R-R' shown in fig. 1 and seen from above.

Referring to fig. 4, the intervals D0, D1, D2 between the first and second inner sidewalls 221e and 231e may become smaller as approaching the center of the blowing gap S.

The first and second inner sidewalls 221e and 231e may be convexly formed toward the radial inner side, and a shortest distance D0 may be formed between apexes of the first and second inner sidewalls 221e and 231 e. The shortest distance D0 may be formed at the center of the blowing gap S.

The first discharge port 222 may be formed at a position further rearward than the position where the shortest distance D0 is formed. The second discharge port 232 may be formed at a position further rearward than the position where the shortest distance D0 is formed.

First tower front end 221b and second tower front end 231b may be separated by a first separation D1. The first tower rear end 221c and the second tower rear end 231c can be separated by a second separation D2.

The first interval D1 and the second interval D2 may be the same. The first spacing D1 may be greater than the shortest distance D0 and the second spacing D2 may be greater than the shortest distance D0.

The interval between the first inner sidewall 221e and the second inner sidewall 231e may become smaller from the rear ends 221c, 231c to the position where the shortest distance D0 is formed, and may become larger from the position where the shortest distance D0 is formed to the front ends 221b, 231 b.

The first tower front end 221b and the second tower front end 231b may be formed to be inclined with respect to the front-rear axis X.

The respective tangents at the first tower front end 221b and the second tower front end 231b may have a predetermined inclination angle a with respect to the front-rear axis X.

A part of the air discharged forward through the blowing gap S may flow with the inclination angle a with respect to the front-rear axis X.

With the above configuration, the diffusion angle of the air discharged forward through the blowing gap S can be increased.

When the air is discharged forward through the blowing gap S, a first airflow converter 401, which will be described later, may be in a state of being drawn into the first plate body slit 223.

When the air is discharged forward through the blowing gap S, a second air flow changer 402 described later may be in a state of being drawn into the second plate body slit 233.

Referring to fig. 5, the flow direction of the air discharged to the blowing gap S may be guided by the first discharge guide 225 and the second discharge guide 235.

The first discharge guide 225 may include a first inner guide 225a connected to the first inner sidewall 221e, and a first outer guide 225b connected to the first outer sidewall 221 d.

The first inner guide 225a may be manufactured as one body with the first inner sidewall 221e, but may also be manufactured as a separate member.

The first outer guide 225b may be manufactured as one body with the first outer sidewall 221d, but may also be manufactured as a separate component.

The first inner guide 225a may be formed to protrude from the first inner sidewall 221e toward the first distribution space 220 s.

The first outer guide 225b may be formed to protrude from the first outer sidewall 221d toward the first distribution space 220 s. The first outer guide 225b may be formed to be spaced apart from the outside of the first inner guide 225a, and a first discharge port 222 may be formed between the first inner guide 225a and the first outer guide 225 b.

The radius of curvature of the first inner guide 225a may be smaller than that of the first outer guide 225 b.

The air of the first distribution space 220S may flow between the first inner guide 225a and the first outer guide 225b and toward the blowing gap S through the first discharge port 222.

The second spouting guide 235 may include a second inner guide 235a connected to the second inner sidewall 231e, and a second outer guide 235b connected to the second outer sidewall 231 d.

The second inner guide 235a may be manufactured integrally with the second inner sidewall 231e, but may also be manufactured as a separate member.

The second outer guide 235b may be manufactured integrally with the second outer sidewall 231d, but may also be manufactured as a separate member.

The second inner guide 235a may be formed to protrude from the second inner sidewall 231e toward the second distribution space 230 s.

The second outer guide 235b may be formed to protrude from the second outer sidewall 231d toward the second distribution space 230 s. The second outer guide 235b may be formed to be spaced apart from the outside of the second inner guide 235a, and the second discharge port 232 may be formed between the second inner guide 235 a.

The radius of curvature of the second inner guide 235a may be smaller than that of the second outer guide 235 b.

The air of the second distribution space 230S may flow between the second inner guide 235a and the second outer guide 235b and flow toward the blowing gap S through the second discharge opening 232.

The widths w1, w2, w3 of the first discharge opening 222 may be formed so as to become gradually smaller and then gradually larger as approaching the outlet from the inlet of the first discharge guide 225.

The inlet width w1 of the first ejection guide 225 may be greater than the outlet width w3 of the first ejection guide 225.

The inlet width w1 may be defined as the spacing between the outer end of the first inner guide 225a and the outer end of the first outer guide 225 b. The outlet width w3 may be defined as the interval from the first discharge outlet front end 222a, which is the inside end of the first inner guide 225a, to the first discharge outlet rear end 222b, which is the inside end of the first outer guide 225 b.

The inlet width w1 and the outlet width w3 may be greater than the shortest width w2 of the first ejection opening 222.

The shortest width w2 may be defined as the shortest distance between the first discharge orifice rear end 222b and the first inner guide 225 a.

The width of the first discharge opening 222 may gradually decrease from the entrance of the first discharge guide 225 to the position where the shortest width w2 is formed, and may gradually increase from the position where the shortest width w2 is formed to the exit of the first discharge guide 225.

The second discharge guide 235 may have a second discharge port leading end 232a and a second discharge port trailing end 232b, and may have the same width distribution as the first discharge guide 225, as the first discharge guide 225.

Next, the switching of the wind direction by airflow converter 400 will be described with reference to fig. 6 and 7. Fig. 6 shows a state where the air flow changer 400 protrudes toward the blowing gap S and causes the blower 1 to form an ascending air flow, and fig. 7 is a diagram for explaining an operation principle of the air flow changer 400.

Referring to fig. 6, the air flow changer 400 may protrude toward the blowing gap S, and may convert a flow direction of air spouted forward through the blowing gap S into an updraft.

The gas flow changer 400 may include a first gas flow changer 401 disposed in the first tower shell 221, and a second gas flow changer 402 disposed in the second tower shell 231.

The first and second airflow transformers 401 and 402 may protrude from the first and second towers 220 and 230 toward the blowing gap S, respectively, and block the front of the blowing gap S.

When the first airflow converter 401 and the second airflow converter 402 protrude and block the front of the blowing gap S, the air discharged through the first discharge port 222 and the second discharge port 232 may be blocked by the airflow converter 400 and flow upward Z.

When the first airflow converter 401 and the second airflow converter 402 are respectively introduced into the first tower 220 and the second tower 230 to open the front of the blowing gap S, the air discharged through the first discharge port 222 and the second discharge port 232 can flow forward X through the blowing gap S.

Referring to fig. 7, the airflow transformers 401, 402 may include: a plate body 410 protruding toward the blowing gap S; a motor 420 providing a driving force to the board 410; a plate body guide 430 guiding a moving direction of the plate body 410; a cover 440 supporting the motor 420 and the plate body guide 430.

Although the first airflow converter 401 is described below as an example, the following description of the first airflow converter 401 can be applied to the second airflow converter 402 in the same manner.

As shown in fig. 4 and 5, the plate body 410 may be introduced into the first plate body slit 223. When the motor 420 is driven, the plate body 410 may be protruded toward the blowing gap S through the first plate body slit 223. The plate body 410 may have an arch (arch) shape whose cross-sectional shape is an arc (arc). When the motor 420 is driven, the plate body 410 may move in the circumferential direction and protrude toward the blowing gap S.

The motor 420 may be connected with a pinion gear 421 and rotate the pinion gear 421. The motor 420 may rotate the pinion 421 in a clockwise direction or a counterclockwise direction.

The panel body guide 430 may have a plate shape extending up and down. The panel body guide 430 may include: a guide slit 450 extending obliquely upward and downward; the rack 431 is formed to protrude toward the pinion 421.

The rack 431 may be engaged with the pinion 421. When the motor 420 is driven to rotate the pinion 421, the rack 431 engaged with the pinion 421 may move up and down.

A guide protrusion 411 formed at the board body 410 protruding toward the board body guide 430 may be inserted into the guide slit 450.

When the plate body guide 430 moves up and down as the rack 431 moves up and down, the guide protrusion 411 may be forced and moved by the guide slit 450. The guide protrusion 411 may be diagonally moved within the guide slot 450 as the plate body guide 430 moves up and down.

When the rack 431 is moved to the upper side, the guide protrusion 411 may be moved along the guide slit 450 and be located at the lowermost end of the guide slit 450. When the guide protrusion 411 is located at the lowermost end of the guide slit 450, as shown in fig. 4 and 5, the plate body 410 may be completely hidden within the first tower 220. When the rack 431 moves to the upper side, the guide slit 450 also moves to the upper side, and thus, the guide protrusion 411 may move in the circumferential direction on the same level along the guide slit 450.

When the rack 431 is moved to the lower side, the guide protrusion 411 may be moved along the guide slit 450 and be located at the upper end of the guide slit 450. When the guide protrusion 411 is located at the upper end of the guide slit 450, as shown in fig. 6, the plate body 410 may protrude from the first tower 220 toward the blowing gap S. When the rack 431 moves to the lower side, the guide slit 450 also moves to the lower side, and thus, the guide protrusion 411 may move in the circumferential direction on the same level along the guide slit 450.

The cover 440 may include: a first cover 441 disposed outside the plate body guide 430; a second cover 442 disposed inside the plate guide 430 and closely attached to the first inner sidewall 221 e; a motor support plate 443 extending upward from the first cover 441 and connected to the motor 420; and a stopper 444 limiting the up and down movement of the plate body guide 430.

The first cover 441 may cover an outer side of the plate body guide 430, and the second cover 442 may cover an inner side of the plate body guide 430. The first cover 441 may separate the space where the plate body guide 430 is disposed from the first distribution space 220 s. The second cover 442 may prevent the plate body guide 430 from contacting the first inner sidewall 221 e.

The motor support plate 443 may extend upward from the first cover 441 and support the load of the motor 420.

The stopper 444 may be formed to protrude from the first cover 441 toward the plate body guide 430. A locking protrusion (not shown) that is locked to the stopper 444 as the plate body guide 430 moves up and down may be formed on one surface thereof. When the plate body guide 430 moves up and down, the locking projection (not shown) is locked to the stopper 444, whereby the up and down movement of the plate body guide 430 can be restricted.

Next, the internal structure of the suction module 100 will be described with reference to fig. 8 and 9. Fig. 8 is a view showing an enlarged interior of the suction module 100 in a longitudinal sectional view of the blower 1, and fig. 9 is a view for explaining a support structure of the filter 130.

The fan assembly 300 may include a fan housing 350 that houses the fan 320.

The fan housing 350 may include a bell mouth 141, the bell mouth 141 directing air that has passed through the filter 130 toward the fan 320.

The bell mouth 141 may be disposed on the upper side of the filter 130, and the suction grill 140 may be disposed between the filter 130 and the bell mouth 141.

The bell mouth 141 may have a ring shape having a predetermined inner diameter BD, and an inner side thereof may be opened in the vertical direction. It is understood that the inner diameter BD is the diameter of the inner circumferential surface 141a of the bell mouth 141, and an air flow path toward the fan 320 may be formed inside the bell mouth 141.

The fan 320 connected to the motor shaft 311 generates suction force with respect to the air of the filter hole 131 by rotation, and the air of the filter hole 131 may flow into the fan housing 350 through the suction grill 140 and the bell mouth 141.

The filter 130 may have a cylindrical shape in which the filter hole 131 is formed, and the air flowing into the lower case 120 through the suction hole 121 may flow into the filter hole 131 after passing through the outer circumferential surface 130a and the inner circumferential surface 130b of the filter 130. When the air flowing in flows from the outer circumferential surface 130a to the inner circumferential surface 130b of the filter 130, the air may flow into the filter hole 131 in a state where foreign substances contained in the air are filtered by a pre-filter, a HEPA filter, or a deodorizing filter disposed between the outer circumferential surface 130a and the inner circumferential surface 130 b.

The filter 130 may be supported by a filter frame 132 that restricts the filter 130 from moving radially outward. The filter frame 132 may extend in the up-down direction and contact the outer circumferential surface 130a of the filter 130. The filter frames 132 may be arranged in plural numbers at intervals in the circumferential direction, and may be arranged in three numbers. The filter 130 may be accessed via an area where the filter frame 132 is not configured. The lower case 120 may be configured to be detachable from the driving unit 500, and a user may extract the filter 130 and clean it after separating the lower case 120.

The filter frame 132 may be connected to a substrate cover 160 disposed at a lower side of the filter 130. The substrate cover 160 may contact the bottom surface of the filter 130 and support the filter 130. The substrate cover 160 may include a cover outer wall 161, the cover outer wall 161 extending in a circumferential direction and being supported by the driving unit 500, 600, 700.

The cover outer wall 161 may include: a cover outer wall top surface 161a extending in the circumferential direction; a frame coupling part 161b protruding upward from the cover outer wall top surface 161 a; and a frame fastening hole 161c formed in the frame connection part 161 b.

The filter frame 132 may be connected to the cover outer wall 161 by a predetermined fastening member (not shown) penetrating the frame fastening hole 161c and fixed to the substrate cover 160.

Drive units 500, 600, 700 for rotating the blower 1 are disposed below the base plate cover 160. The driving unit 500, 600, 700 may include: a base 510, 610, 760 in contact with the ground; and a rotary disk 520, 620 rotatably disposed on the upper side of the base 510, 610, 760.

The substrate cover 160 may be disposed above the turntable 520 or 620, and the turntable 520 or 620 may rotate while supporting all the load of the rotating structures 100 or 200 disposed above the substrate cover 160, including the substrate cover 160.

Next, an external configuration of the driving unit 500 according to an embodiment of the present invention will be described with reference to fig. 10. Fig. 10 is a perspective view of the driving unit 500 in a state where the base 510 and the rotary disk 520 are assembled.

The driving unit 500 includes: a base 510; a rotary plate 520 connected to the lower case 120 and rotatably disposed on the upper side of the base 510; and a motor 530 generating power to rotate the rotary disk 520.

The base 510 may be in contact with the ground and fixedly disposed on the ground, and the base 510 may be in the shape of a Bowl (Bowl).

The rotary plate 520 is rotatably disposed at an upper side of the base 510 and supported by the base 510. When the rotary disk 520 rotates, the base 510 can support Normal stress (Normal stress) and Shear stress (Shear stress) generated by all the structures disposed on the upper side of the base 510 including the rotary disk 520.

The rotary plate 520 may be configured to cover an upper portion of the base 510, and the rotary plate 520 may include: a first mounting portion 521 for mounting the substrate cover 160; and a second seating portion 522 in which the lower case 120 is seated.

The first and second seating portions 521 and 522 may be integrally formed and may be divided from each other by a first step portion 520d formed between the first and second seating portions 521 and 522. The first seating portion 521 may be formed to protrude upward than the second seating portion 522, and the first step portion 520d may have a height in the vertical direction and extend in the circumferential direction.

The first placing portion 521 may include: a central portion 520a in which a shaft through-hole 520s1 is formed; a first rim 520b formed to surround the center portion 520 a; a second rim 520c formed to surround the first rim 520 b; and a first stepped part 520d protruding downward from the second rim 520 c.

The overall outer shape of the center portion 520a may be a disk shape, and a shaft through hole 520s1 that opens in the vertical direction may be formed in the center portion 520 a. The shaft through hole 520s1 may be a space into which a shaft main body 570 (see fig. 11) described later is inserted. A pair of protrusions (crest)520a1 may be formed to face each other in the shaft through hole 520s 1. The protrusion 520a1 may be a region where a part of the center portion 520a protrudes to the shaft through hole 520s1, and the shaft through hole 520s1 may be formed with a site protruding radially inward by the protrusion 520a 1.

The overall outer shape of the first rim (rim)520b may be a ring shape, and may be connected to the center part 520a along the outer circumference of the center part 520 a. The top surface of the first rim 520b may be formed to be bent more downward than the top surface of the center portion 520 a.

The second rim 520c may have a ring shape in its entire outer shape, and may be coupled to the first rim 520b along the outer circumference of the first rim 520 b. The top surface of the second rim 520c may be formed to be bent more to the upper side than the top surface of the first rim 520 b. Thus, it can be understood that the first rim 520b is a region depressed downward between the center portion 520a and the second rim 520 c.

The overall outer shape of the first stepped portion 520d may be a cylindrical shape, and the shape of the cross section may be a ring shape. The first step part 520d may be formed to protrude downward along the outer circumference of the second rim 520c and extend in the circumferential direction. The first installation portion 521 may be spaced apart from the second installation portion 522 up and down by a first step portion 520 d.

The second placing portion 522 may include: a third flange 520e connected to the first stepped portion 520 d; a second step 520f protruding downward from the third rim 520 e; a bent portion 520g connected to the second stepped portion 520 f; and an edge 520h connected to the bent portion 520 g.

The third rim 520e may have an overall outer shape of a ring shape, and may be connected to the first stepped portion 520d along the outer circumference of the first stepped portion 520 d. The third rim 520e may protrude from a lower end portion of the first stepped portion 520d toward a radial outside and extend in a circumferential direction. The third rim 520e may be located at a lower side than the second rim 520 c.

The second stepped portion 520f may be formed to protrude downward from the outer circumference of the third rim 520e and extend in the circumferential direction. The third flange 520e may be vertically spaced apart from the bent portion 520g by the second stepped portion 520 f.

The first and second step parts 520d and 520f may be named as "step parts" formed to be bent at the top surface of the rotation disk 520.

The bent portion 520g may be formed to protrude outward in the radial direction from the outer circumference of the second stepped portion 520f and extend in the circumferential direction. In the process of the bent portion 520g protruding toward the radial outside, the bent portion 520g protrudes to be bent toward the lower side at least once. The bent portion 520g may be defined as a region between the second stepped portion 520f and the edge 520 h.

The edge 520h may form the outermost side of the rotating disk 520. The edge 520h may be formed to protrude from the outer circumference of the bent portion 520g toward the radial outside and extend in the circumferential direction. The bottom surface of the rim 520h contacts the top surface of the base 510 and may be supported by the base 510.

The rotary plate 520 may be formed with an upper protrusion 529 formed to protrude upward from the top surface of the rotary plate 520. The upper bosses 529 may be formed in plural at intervals in a circumferential direction, and protrude upward from the top surface of the second rim 520 c. The upper posts 529 may be coupled with the substrate enclosure 160 and secure the substrate enclosure 160 to the rotating disk 520. The substrate cover 160 may be fixed to the rotary plate 520 by a predetermined fastening member (not shown) penetrating the upper boss 529, and may be rotated integrally with the rotary plate 520 by the rotation of the rotary plate 520.

The motor 530 may be disposed at an upper side of the rotating disk 520. The motor insertion groove 520s2 opened in the up-down direction may be formed at the rotary disk 520, and the motor 530 may be supported by the rotary disk 520 in a state where at least a portion of a lower region of the motor 530 is inserted into the motor insertion groove 520s 2. The motor insertion groove 520s2 may be formed at the second rim 520c, and may be formed between the plurality of upper bosses 529. The motor 530 may be integrally rotated with the rotating disk 520 by the rotation of the rotating disk 520 in a state where at least a portion thereof is inserted into the motor insertion groove 520s 2. As the motor 530 is disposed on the upper side of the rotating disk 520 to rotate together, the vertical height of the driving unit 500 can be reduced, and the driving unit 500 can be made more compact.

The overall profile of the motor 530 may be a cylindrical shape. The motor 530 may include an electric wire connection part 531, and the electric wire connection part 531 is formed to protrude to an outer side of the motor 530 and is electrically connected with the electric wire 590. When the motor 530 is integrally rotated by the rotation of the rotating disk 520, any one of the plurality of upper bosses 529 may be a stopper boss 529a to prevent the occurrence of a phenomenon in which the wire connection part 531 is disengaged. The stopper boss 529a may be the same as the upper boss 529, and may refer to the upper boss 529 located near the wire connection part 531. The stopper boss 529a may be located within a rotation radius of the wire connecting part 531, and the wire connecting part 531 may form a detent with the stopper boss 529a when rotated.

The rotary disk 520 may have a case fastening hole 520e2 through which a predetermined fastening member (not shown) connected to the lower case 120 passes through the case fastening hole 520e 2. The case fastening holes 520e2 may be formed to be opened up and down at the third rim 520e, and may be formed in plural numbers at intervals in the circumferential direction. The case fastening holes 520e2 may be formed in a lower boss 528 (see fig. 13) to be described later, and a predetermined fastening member (not shown) may be inserted through the case fastening holes 520e2 to connect the lower case 120 and the rotary disk 520. The lower housing 120 may be connected with the rotating disk 520 and integrally rotated with the rotating disk 520 by the rotation of the rotating disk 520.

The first step 520d may extend in the circumferential direction, and at least a portion thereof may be formed by being bent inward in the radial direction. The first step 520d may be bent toward the radially inner side to form a valley (valley)520d 1. The valley 520d1 may form a groove 520e1 opened up and down between the first step 520d and the third rim 520 e. A protrusion (not shown) for coupling with the rotary disk 520 may be formed at the lower case 120, and the protrusion (not shown) may be inserted into the groove 520e1 to fix the lower case 120 to the rotary disk 520. However, the lower case 120 may be coupled to the rotary disk 520 using the case fastening holes 520e2 without forming the valleys 520d1 and the grooves 520e 1.

Since the first step portion 520d and the second step portion 520f have a height difference in the rotary disk 520 extending in the radial direction, a space is provided in which a bearing 580 (see fig. 13) described later can be disposed inside the rotary disk 520.

Next, the structure of the base 510 according to an embodiment of the present invention will be described with reference to fig. 11. Fig. 11 shows a state in which the drive unit 500 is disassembled into a base 510 and a rotary plate 520 and viewed from the upper side to the lower side.

The base 510 may include: a stem (stem)511, a space being formed inside the stem 511, the stem 511 being in contact with the ground; and a ring member 512 disposed above the stem 511 and covering the inner space of the stem 511.

The entire outer shape of the stem 511 may be a Bowl (Bowl) shape, and a space may be formed inside the stem 511.

The ring member 512 may have a circular disk shape as a whole, and may be disposed on the top surface of the stem 511.

The ring member 512 may include: a first support portion 512a disposed at the stem 511; a second support 512b connected to the first support 512 a; a third support 512d connected to the second support 512 b; and a mounting portion 512e protruding upward from the third supporting portion 512 d. The supporting portions 512a, 512b, 512d and the mounting portion 512e may be formed in one body.

The overall shape of the first support part 512a may be a ring shape, which may form an edge of the ring member 512. The bottom surface of the first support part 512a contacts the top surface of the stem 511 so that the ring member 512 can be supported by the stem 511.

The overall outer shape of the second support part 512b may be a ring shape, which may be formed to protrude from the inner circumference of the first support part 512a toward the radial inner side and extend in the circumferential direction. The first support 512a and the second support 512b may be divided by a rail 513 described later.

The overall outer shape of the third support 512d may be a ring shape, which may be formed to protrude from the inner circumference of the second support 512b toward the radial inner side and extend in the circumferential direction. The third support portion 512d may be defined as an inner region of the boundary wall 514 described later.

The overall outer shape of the mounting portion 512e may be a cylindrical shape, which may be formed to protrude upward from the top surface of the third supporting portion 512 d. The shaft body 570 may penetrate through the center portion of the mounting portion 512e, and the shaft body 570 may be rotatably disposed at the center portion of the mounting portion 512 e.

The base 510 may be formed with a rail 513 protruding toward an upper side of the base 510. The track 513 may extend in a circumferential direction to form a circular closed loop.

The overall outer shape of the rail 513 may be a ring shape, and the movement path of bearings 580 and 680 (see fig. 13 and 18) described later may be guided by the rail 513. In addition, since the rotation of the bearings 580 and 680 is supported by the rail 513, the disengagement of the bearings 580 and 680 can be prevented.

The base 510 may include a boundary wall 514, and the boundary wall 514 is formed to protrude upward from the top surface of the base 510.

The boundary wall 514 may have a cylindrical shape as a whole, and the boundary wall 514 may extend in the circumferential direction with a space 514s formed inside. The boundary wall 514 may be formed to protrude upward from the top surface of the ring member 512, and may divide the second support portion 512b and the third support portion 512d with the boundary wall 514 as a reference. The boundary wall 514 may be formed radially inward of the track 513 and radially outward of a rotation shaft cover 515 described later.

The driving unit 500 may include: a first gear 540 connected with the motor 530; and a second gear 550 engaged with the first gear 540.

The motor 530 may be disposed at an upper side of the rotating plate 520, and the first gear 540 may be disposed at a lower side of the rotating plate 520. The first gear 540 may be a spur gear, and may be a pinion gear.

The second gear 550 may be configured to be disposed at the base 510, and may be configured at a position more radially inward than the first gear 540. The first gear 540 may be engaged with the second gear 550 at a radially outer side of the second gear 550 and rotate. The second gear 550 may be a ring gear, and may extend in a circumferential direction.

The second gear 550 may be connected with the boundary wall 514. The second gear 550 may be in contact with the outer circumferential surface of the boundary wall 514, and may be attached and fixed to the outer circumferential surface of the boundary wall 514. Accordingly, when the first gear 540 is engaged with the second gear 550 and rotated in a state where the second gear 550 is fixed, the first gear 540 and the motor 530 connected to the first gear 540 can be rotated together with the rotary plate 520.

The second gear 550 may be disposed between the track 513 and the shaft body 570. A second gear 550 may be disposed between the track 513 and the boundary wall 514. With this arrangement structure, the space 514s inside the boundary wall 514 can be compactly used as a space for arranging and supporting the shaft main body 570.

The base 510 may include a rotating shaft housing 515 protruding toward the rotating disk 520.

The entire outer shape of the rotating shaft cover 515 may be a cylinder shape, and a space into which the shaft body 570 is inserted may be provided at the inner side thereof. The rotation shaft cover body 515 may be formed to protrude upward from the top surface of the mounting portion 512e and face the inner circumferential surface of the boundary wall 514.

A shaft bearing 560 (see fig. 13) described later may be disposed inside the rotating shaft cover body 515. The rotation shaft cover 515 may support the shaft bearing 560 and prevent the shaft bearing 560 from being separated from the shaft main body 570.

Next, the detailed structure of the shaft main body 570 and the relative positional relationship among the rail 513, the second gear 550, and the shaft main body 570 will be described with reference to fig. 12. Fig. 12 shows a form of the base 510 shown in fig. 11, as viewed from the upper side to the right below.

A shaft insertion opening 510s1 is formed inside the rotation shaft cover 515, and the shaft body 570 is inserted through the shaft insertion opening 510s1 and the shaft holder 526 described later is inserted into the shaft insertion opening 510s 1. The shaft insertion port 510s1 may be a space that is open vertically, or may be a cylindrical space inside the rotation shaft cover 515.

The shaft main body 570 may upwardly penetrate the shaft insertion port 510s 1. The shaft main body 570 may be disposed such that a lower portion thereof is disposed inside the base 510 and an upper portion thereof passes through the shaft insertion port 510s 1.

The shaft body 570 may include: a first body 571 extending in a bent manner; a second body 572 disposed apart from the first body 571; and a third body 573 disposed apart from the first body 571 and the second body 572. The first body 571, the second body 572, and the third body 573 may be disposed spaced apart from each other in the shaft insertion port 510s 1.

The first body 571 may be arranged further forward than the second body 572 and the third body 573 with reference to fig. 12, and may extend longer than the second body 572 and the third body 573. The second and third bodies 572 and 573 may be configured to face the first body 571 in the front-rear direction with each other, and the second and third bodies 572 and 573 may be configured to face each other left and right. The second body 572 may be disposed on the left side and the third body 573 may be disposed on the right side, but the second body 572 and the third body 573 may be identical in shape.

The second body 572 and the third body 573 may be connected to each other to have the same shape as the first body 571. The shaft main body 570 may include two first main bodies 571 of the same shape, and the two first main bodies 571 may be spaced apart in the front-rear direction and configured to face each other.

The first body 571 may be bent to extend in the left-right direction, and may be bent twice in the extending direction. The first body 571 may include: a left end 571a extending obliquely rearward; a right end 571c extending obliquely rearward; and a core portion 571b extending obliquely forward from each of the left end portion 571a and the right end portion 571 c.

The second body 572 may be bent and extended in the left-right direction, and may be bent once in the extending direction. The second body 572 may include a side end 572a extending obliquely forward; and the other side end 572b extending bent from the one side end 572 a.

The third body 573 may be bent and extended in the left-right direction, and may be bent once in the extending direction. The third body 573 may include: a side end 573a extending obliquely forward; and the other side end portion 573b bent and extended from the one side end portion 573 a. The second body 572 and the third body 573 may have the same shape and structure.

A wire penetration portion 570s through which a wire 590 (see fig. 15) described later penetrates may be formed between the first body 571 and the second body 572, and between the first body 571 and the third body 573. The electric wire 590 may be inserted into the shaft main body 570 through a reel 574 (see fig. 15) described later. The wire 590 may extend upward through the wire through portion 570s and be electrically connected to the motor 530. The wire penetrating portion 570s may be defined as an inner space of the shaft main body 570 including the rotation center O of the rotary disk 520. Since the electric wire 590 extends upward along the rotation center O and is connected to the motor 530, the electric wire 590 is not twisted even when the rotary plate 520 rotates, and the electric connection between the motor 530 and the electric wire 590 can be smoothly maintained.

A rotation shaft cover 515, a boundary wall 514, a second gear 550, and a rail 513 may be arranged in this order from the rotation center O to the radially outer side on the upper side of the base 510. Since the track 513 that guides a path along which a bearing 580 (see fig. 13) described later moves in the circumferential direction is disposed outside the second gear 550, the second gear 550 can be engaged with the first gear 540 inside the track 513 while the bearing 580 moves without interfering with the second gear 550, and the second gear 550 can be smoothly engaged with the first gear 540 while ensuring a sufficient distance from the bearing 580, and power loss can be minimized by reducing the power transmission path between the first gear 540 and the second gear 550.

The rail 513, the second gear 550, and the shaft main body 570 may be disposed on the same horizontal plane. Specifically, the structures 513, 550, and 570 may be disposed to vertically penetrate a predetermined horizontal plane perpendicular to the vertical axis and including the top surface of the base 510. In other words, it can be said that the rail 513, the second gear 550, and the shaft main body 570 are disposed to pass through a horizontal plane including the top surface of the ring member 512 up and down. With the above-described configuration, the space between the rail 513 and the boundary wall 514 can be used as the arrangement space of the second gear 550, and the space inside the boundary wall 514 can be used as the arrangement space of the shaft main body 570, so that the rail 513, the second gear 550, and the shaft main body 570 can all be arranged on a single horizontal plane. Accordingly, the height occupied by the driving unit 500 in the vertical direction can be reduced, and the height of the lower case 120 spaced upward from the floor surface can be reduced, and as a result, since the position of the suction hole 121 formed in the lower case 120 can be lowered, there is an advantage that dust accumulated on the floor surface can be efficiently sucked by the blower 1.

Next, a detailed structure of the rotary disk 520 according to an embodiment of the present invention will be described with reference to fig. 13. Fig. 13 shows a state in which the drive unit 500 is separated into a base 510 and a rotary plate 520 and viewed from the lower side to the upper side.

The post handle 511 may include: a lower plate 511a which is in contact with the ground; a stem outer wall 511b extending obliquely upward from the edge of the lower plate 511 a; and a stem seating portion 511c extending radially outward from an upper end portion of the stem outer wall 511 b.

The lower plate 511a may have a disk shape in an overall shape, and a plurality of holes 511s are formed at intervals in a circumferential direction, and fastening members (not shown) for fixing components within the base 510 may be introduced into the plurality of holes 511 s.

The shank outer wall 511b may extend in the circumferential direction, and be formed to be inclined toward the radially outer side.

The stem seating portion 511c may extend in the circumferential direction and be formed to face the edge 520h of the rotating disk 520 disposed at the upper side thereof. When the rotary disk 520 is seated on the base 510, the rim 520h may be seated on the top surface of the stem seating portion 511c to be supported.

The rotating disk 520 may include: a first peripheral wall 523 extending in the circumferential direction; a second peripheral wall 524 extending in the circumferential direction on the radially inner side of the first peripheral wall 523; and a third circumferential wall 525 extending in the circumferential direction radially inside the second circumferential wall 524.

The first peripheral wall 523, the second peripheral wall 524, and the third peripheral wall 525 may be concentric circles, and their diameters are larger the further radially outward.

The first peripheral wall 523, the second peripheral wall 524, and the third peripheral wall 525 may be formed to be at least partially cut, and the first gear 540 may be disposed in the cut regions of the peripheral walls 523, 524, and 525.

The first gear 540 may be connected to the motor 530 by the driving motor shaft 532, and the driving motor shaft 532 and the first gear 540 may be disposed at a lower side of the motor insertion groove 520s 2.

The rotating disk 520 may include a shaft seating 526, which projects from the central portion 520a to a lower side and provides a space into which the shaft main body 570 is inserted. The shaft holder 526 may have a cylindrical shape as a whole, and a shaft through hole 520s1 may be formed inside the shaft holder 526.

The shaft seat 526 may include: a seat outer wall 526a that forms the appearance of the seat 526; a projection 526b projecting radially inward from the seat outer wall 526 a; and a body fastening member 526c inserted into the protrusion 526b in the vertical direction.

The body fastening member 526c can be inserted into a body fastening hole (not shown) that opens in the vertical direction at the projection 526 b.

The shaft body 570 may be inserted and fixed to the inner side of the shaft seat 526, and the convex portion 526b may have a curvature formed to be fitted to the first body 571, the second body 572, and the third body 573 of the shaft body 570, respectively. In a state where the shaft main body 570 is inserted into the inside of the shaft seat 526, the shaft main body 570 may be fixed to the rotation plate 520 by penetrating the main body fastening member 526c through the fastening plate 576 (refer to fig. 15) of the shaft main body 570 and the protruding portion 526 b. At this time, the shaft main body 570 may be integrally rotated together with the rotating disk 520, and not only the structure of the rotating shaft may be simplified, but also interference between the rotating shaft and the base 510 may be minimized.

The drive unit 500 may include a shaft bearing 560 configured to surround the shaft body 570.

The shaft bearing 560 may have a cylindrical shape as a whole, and a shaft body 570 may penetrate inside the shaft bearing 560.

The shaft bearing 560 may include: a first layer 561 configured to be rotatable integrally with the shaft seat 526; and a second layer 562 configured to surround the first layer 561.

The first layer 561 may be disposed radially inward of the second layer 562, and an outer peripheral surface of the first layer 561 may be in contact with an inner peripheral surface of the second layer 562.

The second layer 562 may be disposed radially inward of the rotation shaft cover body 515, and an outer peripheral surface of the second layer 562 may be in contact with an inner peripheral surface of the rotation shaft cover body 515.

The first layer 561 may be rotatably coupled to the second layer 562, and may rotate with the axle mount 526 if the rotary plate 520 rotates. In contrast, second layer 562 may be configured to be fixed to rotating shaft housing 515 so as not to rotate even if rotating disk 520 rotates. The first layer 561 may support rotation of the shaft mount 526 and the second layer 562 may support rotation of the first layer 561. Here, lubricating oil may be injected between the first layer 561 and the second layer 562.

Shaft bearing 560 may be disposed to surround seat outer wall 526a of shaft seat 526 at turntable 520, or may be disposed to be fixed to the inside of housing 515 at base 510.

The rotating disk 520 may include a lower boss 528 protruding downward from the second seating portion 522. A plurality of lower bosses 528 may be arranged at intervals in a circumferential direction, and case fastening holes 520e2 opened in the vertical direction may be formed in the lower bosses 528.

The rotating disk 520 may include a plurality of ribs 527 extending radially. The plurality of ribs 527 may be formed in plural at intervals in the circumferential direction.

The ribs 527 may include: a first rib 527a extending from the edge 520h toward the first peripheral wall 523; second ribs 527b extending from the first peripheral wall 523 to the second peripheral wall 524; and third ribs 527c extending from the second peripheral wall 524 to the third peripheral wall 525.

The ribs 527 may include: first boundary ribs 527d arranged at the cut-out portions of the peripheral walls 523, 524, and 525 and extending in the radial direction; and second boundary ribs 527e arranged at the cut portions of the peripheral walls 523, 524, and 525 and spaced apart from the first boundary ribs 527d in the circumferential direction.

It can be understood that the first boundary rib 527d is a single rib 527d in which the second rib 527b and the third rib 527c are connected to each other to form a continuous surface. The first boundary rib 527d may extend in a radial direction, and the first boundary rib 527d may be disposed adjacent to one side of the first gear 540.

It can be understood that the second boundary rib 527e is a single rib 527e in which the second rib 527b and the third rib 527c are connected to each other to form a continuous surface, and the second boundary rib 527e may be disposed to be spaced apart from the first boundary rib 527d in a circumferential direction and adjacent to the other side of the first gear 540.

The first gear 540 may be disposed between the first boundary rib 527d and the second boundary rib 527e, and may be rotatable between the first boundary rib 527d and the second boundary rib 527 e.

The ribs 527 may include fourth ribs 527f extending radially from the inside of the third peripheral wall 525. The fourth rib 527f may be formed between a fourth peripheral wall 521a protruding from the bottom surface of the first seating part 521 toward the lower side and a fifth peripheral wall 521b protruding from the first seating part 521 toward the lower side and spaced apart from the inside of the fourth peripheral wall 521 a. The fourth and fifth peripheral walls 521a and 521b may have a ring shape, and the fourth ribs 527f may be formed in plural numbers at intervals in the circumferential direction.

The rotary disk 520 may include a plurality of bearings 580 that are disposed apart from each other in a circumferential direction of the rotary disk 520 and rotatably supported at the base 510. The bearing 580 may use a Roller (Roller).

The bearing 580 may be disposed between a plurality of ribs 527 disposed at intervals in the circumferential direction, and may be disposed between a plurality of first ribs 527 a.

The bearing 580 may be disposed between the radially spaced edge 520h and the first peripheral wall 523.

The bearing 580 may include: a support protrusion 581 formed to protrude downward from the rotating disk 520; a support shaft 582 connected to the support protrusion 581; and a wheel (wheel)583 through which the support shaft 582 passes.

The supporting protrusion 581 may be formed with an insertion hole (not shown) into which the supporting shaft 582 may be inserted, and the supporting shaft 582 may be inserted upward into the supporting protrusion 581.

The support shaft 582 may support the wheel 583, and the support shaft 582 may use a screw or a pin. The support shaft 582 may be inserted into and fixed to the support protrusion 581, and may support the wheel 583 to prevent detachment from below.

The wheel 583 may be rotatably disposed between the support protrusion 581 and the support shaft 582. The wheel 583 may use a ball bearing or a roller, and the wheel 583 may rotate about the support shaft 582 as a rotation axis.

When the rotary disk 520 rotates, the wheel 583 can rotate about the support shaft 582 as a rotation axis and can move in the circumferential direction about the rotation center O. In other words, the wheel 583 may rotate around the support shaft 582 as a rotation axis and revolve around the rotation center O as a reference.

The shaft main body 570 may provide a revolution axis P extending in the up-down direction and passing through the rotation center O, and the support shaft 582 may provide a rotation axis Q extending in the up-down direction. The revolution axis P and the revolution axis Q may be parallel. When the rotary disk 520 rotates, the bearing 580 may move in the circumferential direction around the revolution axis P while rotating around the rotation axis Q.

Next, the detailed structure and arrangement position of the bearing 580 according to an embodiment of the present invention will be described with reference to fig. 14. Fig. 14 shows a state where the rotating disk 520 is viewed from below to directly above.

A cut portion 520s3 for disposing the first gear 540 may be formed between the first boundary rib 527d and the second boundary rib 527 e. The cut-out portion 520s3 is understood to be a portion where a part of the peripheral walls 523, 524, 525 is cut out.

The first gear 540 may be rotatably disposed in the cutout 520s3, and ribs 527a1, 527a2, and 527a3 extending from the edge 520h toward the first gear 540 may be formed in the cutout 520s 3. The reinforcing beads 527a1, 527a2, 527a3 may have the same shape as the first beads 527 a. A boss supporting part 529b may be formed at the cut part 520s3, and the boss supporting part 529b is connected to the stopper boss 529a and extends downward.

The bearings 580 may be arranged in plural numbers at intervals in the circumferential direction, and five bearings may be arranged at intervals. However, the number of bearings 580 is not limited to the above-mentioned number as long as a plurality of bearings are arranged at intervals.

The plurality of bearings 580 may include: a first bearing 580a disposed to face the drive motor shaft 532 with reference to the rotation center O; a second bearing 580b disposed between the drive motor shaft 532 and the first bearing 580 a; and a third bearing 580c disposed between the first bearing 580a and the second bearing 580 b. However, the first bearing 580a, the second bearing 580b, and the third bearing 580c are distinguished according to the arrangement positions of the plurality of bearings 580, and the respective bearings 580a, 580b, and 580c may have the same configuration.

The first bearing 580a may be disposed to face the drive motor shaft 532 with reference to the rotation center O. The support shaft 582, the drive motor shaft 532, and the rotation center O of the first bearing 580a may be located on a center line cl (center line). However, the first bearing 580a may be disposed at a position opposite to the drive motor shaft 532 with respect to the rotation center O, and is not necessarily disposed on the center line CL.

According to the above-described configuration of the first bearing 580a, a region of support weakness farthest from the drive motor shaft 532 transmitting power in the rotary disk 520 may be stably supported by the first bearing 580 a.

The separation angle θ between the second bearing 580b and the first gear 540 may be an acute angle centered on the rotation center O. The separation angle θ between the drive motor shaft 532 and the support shaft 582 may be an acute angle centered on the rotation center O. The second bearing 580b may include: one-side bearing 580b1 disposed adjacent to first boundary rib 527 d; and the other side bearing 580b2 disposed adjacent to the second boundary rib 527e, and the one side bearing 580b1 and the other side bearing 580b2 may be disposed symmetrically with respect to the drive motor shaft 532.

With the arrangement of the second bearing 580b, the weak rigidity of the cut-out portion 520s3 where the peripheral walls 523, 524, and 525 are not formed can be enhanced. Further, by disposing the second bearing 580b adjacent to the cutout portion 520s3, it is possible to maximally suppress vibration generated as the first gear 540 disposed in the cutout portion 520s3 meshes with and rotates with the second gear 550.

The third bearing 580c may include: a first bearing 580a disposed at a distance from one side of the first bearing 580c 1; and the other side bearing 580c2 disposed apart from the other side of the first bearing 580 a. The one-side bearing 580c1 and the other-side bearing 580c2 may be arranged symmetrically with respect to the drive motor shaft 532.

The first gear 540 may be engaged with the second gear 550 at a position radially inward of the bearing 580 and rotate. This may mean that the first distance R1 from the rotation center O to the drive motor shaft 532 is less than the second distance R2 from the rotation center O to the support shaft 582.

According to the above configuration, there are advantages in that not only the required kinetic energy efficiency can be improved by reducing the power transmission path from the rotation shaft 532 of the first gear 540 to the rotation center O, but also the vibration generated by the rotation of the first gear 540 can be effectively reduced by disposing the bearing 580 outside the first gear 540. Further, by disposing the bearing 580 so as to be close to the edge 520h as much as possible, the load of a heavy structure rotating on the upper side of the rotary disk 520 is uniformly distributed to the radial outer side, and the load of the blower 1 can be effectively supported.

The rotary disk 520 may include an upper mounting portion 520i coupled to the substrate enclosure 160. The upper mounting part 520i may include: a mounting portion body 520i1 formed to protrude downward from the bottom surface of the rotary plate 520 and to extend between the ribs 527; the mounting hole 520i2 is formed to open vertically in the mounting body 520i 1. The rotary plate 520 may be connected to the substrate cover 160 by a predetermined fastening member (not shown) penetrating the mounting hole 520i 2.

Next, referring to fig. 15, the internal structure of the base 510, the turntable 520, the substrate cover 160, and the connection relationship between the lower housing 120 according to the embodiment of the present invention will be described. Fig. 15 is a partially enlarged view of the drive unit 500 in a longitudinal sectional view of the blower 1.

A control space 150s for accommodating the substrates 152 and 153 is formed inside the substrate cover 160. The substrates 152, 153 may be divided into: a first substrate 152 controlling the driving of the driving unit 500, the airflow inverter 400, and the fan assembly 300; and a second substrate 153 (see fig. 20) for controlling the driving of the heater 240.

At least a portion of the motor 530 may be disposed within the control space 150s of the substrate enclosure 160. The motor 530 may rotate within the substrate enclosure 160.

The boards 152 and 153 are disposed in the control space 150s of the board cover 160 together with the motor 530, thereby allowing the electric components to be managed in an integrated manner.

The substrate cover 160 may include a first magnetic member 169 protruding radially outward from the cover outer wall 161, and the lower housing 120 may include a second magnetic member 129 having a magnetic property opposite to that of the first magnetic member 169. The lower case 120 can be attached to and detached from the substrate cover 160 by the magnetic force of the first and second magnetic members 169 and 129.

The enclosure outer wall 161 may include; a fastening portion 161d extending radially outward from a lower end portion of the cover outer wall 161; and a support portion 161e extending downward from the outer end of the fastening portion 161 d. The fastening portion 161d may be disposed at the third rim 520e and fixed to the rotation plate 520 by a fastening member (not shown) penetrating the case fastening hole 520e 2. At this time, the supporting portion 161e may be seated on the edge 520h and supported by the edge 520 h. Unlike the present embodiment, the lower case 120 may be directly fixed to the rotary disk 520 by directly coupling the lower case 120 to the lower case 120 instead of the substrate cover 160 using a fastening member (not shown) penetrating the case fastening hole 520e 2.

A space 510s2 into which the shaft body 570 is inserted may be formed inside the base 510, and the space 510s2 may be formed inside the lever 511.

The shaft body 570 may include: a first body 571 arranged in the rotating shaft housing 515; a spool 574 connected to the first body 571, disposed under the first body 571, and accommodated in the base 510; and a fastening plate 576 radially protruded to be coupled with the shaft seat 526.

The winding drum 574 may be disposed below the rotary shaft cover 515, and the winding drum 574 may have a cylindrical shape in which the wire penetrating portion 570s is formed. The fastening plate 576 may extend radially inward from an upper portion of the drum 574, and the body fastening member 526c may fix the shaft body 570 to the rotating disk 520 by penetrating the fastening plate 576 and the protrusion 526 b.

The electric wire 590 receiving electric power from an external power source (not shown) may be wound around the outer circumferential surface of the winding drum 574 a predetermined number of times, and may extend upward through an electric wire penetration portion 570s formed inside the winding drum 574 to be electrically connected to the motor 530. With the structure of the bobbin 574 and the wire penetrating portion 570s, the wire 590 is prevented from twisting due to the rotation of the rotary disk 520, and the electrical connection between the wire 590 and the motor 530 can be smoothly maintained.

A wound drum bearing 575 supporting the wire 590 may be disposed inside the base 510.

A gap G1 may be formed between the base 510 and the rotary plate 520 to be spaced up and down. It can be understood that the gap G1 is a spaced space between the first line L1 extending along the bottom surface of the rotating disk 520 and the second line L2 extending along the top surface of the base 510.

A gap G2 may be formed between the base 510 and the bearing 580 and spaced up and down. It can be understood that the gap G2 is a separate space between the second line L2 extending along the top surface of the base 510 and the third line L3 extending along the bottom surface of the bearing 580. A portion of the bearing 580 may contact the base 510 and the remaining portion may be spaced apart from the upper side of the base 510 to form a gap G2.

The slits G1, G2 may be formed by the bearing 580 supported by the base 510. The bearing 580 may be disposed at an upper side of the rail 513 protruding upward from the base 510 and may move in a circumferential direction along the rail 513 extending in the rotation direction of the rotary disk 520. The bottom surface of the rotary plate 520 may be spaced apart from the top surface of the base 510 without contacting, and the rotary plate 520 may be rotatably supported at the base 510 by bearings 580 disposed at the rails 513.

As the bearing 580 rotates in a state of being seated on the rail 513 protruding upward, the rotation plate 520 and the bearing 580 may rotate while maintaining the slits G1, G2 with the base 510, whereby abrasion of the driving unit 500 caused by friction generated at the base 510 can be prevented.

The support shaft 582 of the bearing 580 may be disposed radially outward of the track 513. The bearing 580 may move in a circumferential direction radially outward of the rail 513, and an inner side portion of the bearing 580 may be supported by the rail 513. With the bearing 580 disposed outside the rail 513, the load of the blower 1 can be uniformly dispersed in the radial direction.

Next, an operation of the driving unit 500 according to an embodiment of the present invention will be described with reference to fig. 10 to 15.

When the motor 530 rotates the drive motor shaft 532 using the electric power received through the electric wire 590, the first gear 540 connected to the drive motor shaft 532 rotates. The second gear 550 may be in a state of being fixed to the boundary wall 514, and the first gear 540 rotates along the outer circumference of the second gear 550 extending in the circumferential direction. As the first gear 540 rotates, the rotating disk 520 rotates in the circumferential direction with the shaft main body 570 as a rotation shaft. During rotation of the rotary plate 520, the rotation of the rotary plate 520 is supported by a bearing 560, which rotates at least partially with the shaft seat 526. When the rotary disk 520 rotates, the bearing 580 moves in the circumferential direction around the revolution axis P while rotating around the rotation axis Q. The bearing 580 may move in a circumferential direction while being mounted on the rail 513 protruding upward from the base 510, and may be supported by the rail 513.

The plurality of bearings 580, which are spaced apart from each other in the circumferential direction and directly supported by the base 510, uniformly distribute the heavy load of the main body of the blower 1 to the base 510 disposed on the floor, thereby stably supporting the rotation of the blower 1.

Further, since the bearing 580 supports the load of the main body of the blower 1 while rotating about the rotation axis Q, abrasion due to friction generated between the bearing 580 and the surface of the base 510 is prevented, and the life of the bearing 580 can be extended.

Next, referring to fig. 16, the structure of a base 610 according to another embodiment of the present invention will be described. Fig. 16 shows a state in which a driving unit 600 according to another embodiment of the present invention is disassembled into a base 610 and a rotary disk 620 and is viewed from the upper side.

The base 610 may include: a stem 611 in which a space is formed inside the stem 611 and which is in contact with the ground; and a ring 612 disposed above the stem 611 and covering the space inside the stem 611. The stem 611 and the ring 612 are identical to the stem 511 and the ring 512, respectively, according to an embodiment of the present invention, and thus detailed descriptions thereof will be omitted.

The base 610 may be formed with a rail 613 protruding toward the upper side of the base 610. The rail 613 may include: a first rail 613a formed to protrude upward from the top surface of the ring 612; and a second rail 613b formed radially inward of the first rail 613a so as to face the first rail 613 a.

The overall outer shape of the first rail 613a and the second rail 613b may be ring-shaped, and the first rail 613a and the second rail 613b may be concentric circles. A bearing 680 (see fig. 18) described later can roll (Rolling) in the circumferential direction between the first rail 613a and the second rail 613b, and the first rail 613a and the second rail 613b can prevent the bearing 680 from being removed in the radial direction.

The base 610 may include a boundary wall 614 formed to protrude upward from the top surface of the base 610.

The boundary wall 614 may be cylinder-shaped in overall profile, and may extend in the circumferential direction with a space 614s formed inside. The boundary wall 614 may be formed to protrude upward from the top surface of the ring 612, radially inward of the rail 613, and radially outward of a rotation shaft cover 615, which will be described later.

The driving unit 600 may include: a first gear 640 connected with the motor 630; and a second gear 650 engaged with the first gear 640.

The motor 630 may be disposed at an upper side of the spinning disk 620, and the first gear 640 may be disposed at a lower side of the spinning disk 620. The first gear 640 may be a spur gear, and may be a pinion gear.

The second gear 650 may be disposed at the base 610 and at a position radially inward of the first gear 640. The first gear 640 may be engaged with the second gear 650 at a radially outer side of the second gear 650 and rotate. The second gear 650 may be a ring gear, and may extend in a circumferential direction.

The second gear 650 may be coupled to the boundary wall 614. The second gear 650 may be in contact with an outer circumferential surface of the boundary wall 614, and may be attached and fixed to the outer circumferential surface of the boundary wall 614. Therefore, when the first gear 640 is engaged with the fixed state second gear 650 and rotated, the first gear 640 and the motor 630 connected to the first gear 640 are rotated together with the rotating disk 620.

The second gear 650 may be disposed between the rail 613 and the shaft body 670. Additionally, a second gear 650 may be disposed between the rail 613 and the boundary wall 614. With this arrangement structure, the space 614s formed inside the boundary wall 614 can be compactly used as a space for arranging the support structure of the shaft main body 670.

The base 610 may include a rotating shaft housing 615 protruding toward a rotating disk 620.

The entire outer shape of the rotation shaft cover body 615 may be a cylinder shape, and a space into which the shaft main body 670 can be inserted may be provided at the inner side thereof. The rotation shaft housing 615 may be formed to face an inner circumferential surface of the boundary wall 614.

The drive unit 600 may include a shaft bearing 660, the shaft bearing 660 being configured to surround a shaft main body 670 inserted into the shaft through-hole 620s 1.

The shaft bearing 660 may have a cylindrical shape as a whole, and a shaft body 670 may be inserted into the shaft bearing 660.

The shaft bearing 660 may include: a first layer 661 arranged to be rotatable integrally with a shaft holder 626 (see fig. 18) described later; and a second layer 662 configured to surround the first layer 661.

The first layer 661 may be disposed radially inward of the second layer 662, and an outer peripheral surface of the first layer 661 may be in contact with an inner peripheral surface of the second layer 662.

The second layer 662 may be disposed radially inward of the rotation shaft cover body 615, and an outer peripheral surface of the second layer 662 may contact an inner peripheral surface of the rotation shaft cover body 615.

The first layer 661 may be rotatably coupled with the second layer 662, and if the rotating disk 620 rotates, the first layer 661 may rotate with the shaft seat 626. In contrast, the second layer 662 may be configured to be fixed to the rotating shaft housing 615 such that the second layer 662 does not rotate even though the rotating disk 620 rotates. The first layer 661 may support rotation of the shaft seat 626 and the second layer 662 may support rotation of the first layer 661. Here, a lubricating oil may be injected between the first layer 661 and the second layer 662.

Next, the detailed structure of the shaft main body 670 and the relative positional relationship between the rail 613, the second gear 650, and the shaft main body 670 according to another embodiment of the present invention will be described with reference to fig. 17. Fig. 17 shows a state where the base 610 shown in fig. 16 is viewed from the upper side and directly below.

A shaft insertion opening 610s1 is formed inside the first layer 661, the shaft body 670 penetrates the shaft insertion opening 610s1, and the shaft seat 626, which will be described later, is inserted into the shaft insertion opening 610s 1. The shaft insertion port 610s1 may be a space that is open vertically, or may be a cylindrical space inside the first layer 661.

The shaft body 670 may penetrate the shaft insertion port 610s1 upward. The shaft body 670 may be disposed such that a lower portion thereof is disposed inside the base 610 and an upper portion thereof passes through the shaft insertion port 610s 1.

The shaft main body 670 may include: a first body 671 extending in a curved manner; a second body 672 disposed apart from the first body 671; and a third body 673 disposed to be spaced apart from the first and second bodies 671 and 672. The first body 671, the second body 672, and the third body 673 may be disposed to be spaced apart from each other within the shaft insertion port 610s 1. Since the shaft main body 670 is the same as the shaft main body 570 according to an embodiment of the present invention, a detailed description thereof will be omitted.

A wire penetration portion 670s through which a wire 690 (see fig. 20) to be described later penetrates may be formed between the first body 671 and the second body 672 and between the first body 671 and the third body 673. The wire 690 may extend upward through the wire penetration portion 670s and be electrically connected to the motor 630. Wire penetrating section 670s may be defined as an inner space of shaft main body 670 including rotation center O of rotary disk 620. Since the electric wire 690 extends upward along the rotation center O and is connected to the motor 630, the electric wire 690 is not twisted even when the rotary disk 620 rotates, and the electric connection between the motor 630 and the electric wire 690 can be smoothly maintained.

On the upper side of the base 610, a shaft bearing 660, a rotation shaft cover 615, a boundary wall 614, a second gear 650, and a rail 613 are arranged in this order from the rotation center O to the radially outer side.

The rail 613, the second gear 650, and the shaft main body 670 may be disposed on the same horizontal plane. Specifically, the structures 613, 650, and 670 may be disposed to penetrate a predetermined horizontal plane perpendicular to the vertical axis and including the top surface of the base 610. In other words, it can be said that the rail 613, the second gear 650, and the shaft main body 670 are disposed to pass through a horizontal plane including the top surface of the ring 612 up and down. Since the description thereof is the same as the embodiment of the present invention, the detailed description thereof is omitted.

Next, a detailed structure of the rotary disk 620 according to another embodiment of the present invention will be described with reference to fig. 18. Fig. 18 shows a state in which a drive unit 600 according to another embodiment of the present invention is separated into a base 610 and a rotary plate 620 and viewed from the lower side to the upper side.

The stem 611 may include: a lower plate 611a contacting the ground; a stem outer wall 611b extending obliquely upward from an edge of the lower disc 611 a; the stem seating portion 611c extends radially outward from the upper end of the stem outer wall 611 b.

The lower disk 611a may have a disk shape in an overall outer shape, and may be formed with a plurality of holes 611s, the plurality of holes 611s being capable of introducing a fastening member (not shown) for fixing the components within the base 610, the plurality of holes 611s being formed to be spaced apart in a circumferential direction.

The stem outer wall 611b may extend in the circumferential direction, and is formed to be inclined toward the radially outer side.

The stem seating portion 611c may extend in the circumferential direction, and may be formed to face an edge 620h of the rotating disk 620 disposed at the upper side. When the rotating disk 620 is seated on the base 610, the edge 620h may be seated on the top surface of the stem seating portion 611c and supported.

The rotating disk 620 may include: a first peripheral wall 623 extending in the circumferential direction; a second peripheral wall 624 extending in the circumferential direction radially inside the first peripheral wall 623; and a third circumferential wall 625 extending in the circumferential direction from the radially inner side of the second circumferential wall 624.

The first peripheral wall 623, the second peripheral wall 624, and the third peripheral wall 625 may be concentric circles, and the diameters may be larger as they are located more radially outward.

At least a part of the first peripheral wall 623, the second peripheral wall 624, and the third peripheral wall 625 may be formed by cutting, and a first gear 640 may be disposed in the cut region of the peripheral walls 623, 624, and 625.

The first gear 640 may be connected to the motor 630 through the motor shaft 632, and the motor shaft 632 and the first gear 640 may be disposed at a lower side of the motor insertion groove 620s 2.

Rotating disk 620 may include a shaft receptacle 626 that provides space for shaft body 670 to be inserted. The shaft seat 626 may have a cylindrical overall shape, and a shaft through hole 620s1 may be formed at an inner side of the shaft seat 626.

Shaft seat 626 may include: a seat outer wall 626a that forms the contour of the shaft seat 626; a projection 626b projecting radially inward from the seat outer wall 626 a; and a body fastening hole 626c formed to be opened in the up-down direction at the convex portion 626 b.

The shaft body 670 may be inserted into and fixed to the inner side of the shaft seat 626, and the radius of curvature of the protrusion 626b may be formed to be engaged with the first body 671, the second body 672, and the third body 673 of the shaft body 670, respectively. In a state where shaft main body 670 is inserted into shaft seat 626, shaft main body 670 may be fixed to rotary disk 620 by inserting a predetermined fastening member (not shown) into main body fastening hole 626 c. At this time, the shaft main body 670 may be integrally rotated with the rotating disk 620, and not only the structure of the rotating shaft can be simplified, but also interference between the rotating shaft and the base 610 can be minimized.

The rotating disk 620 may include a lower boss 628 formed to protrude downward. The lower protruding pillar 628 may be formed in a plurality at intervals along the circumferential direction, and the lower protruding pillar 628 may be connected to the housing 100.

Rotating disk 620 may include a plurality of ribs 627 extending radially. The plurality of ribs 627 may be formed in a plurality spaced apart in the circumferential direction.

The ribs 627 may include: a first rib 627a extending from the edge 620h toward the first peripheral wall 623; a second rib 627b extending from the first peripheral wall 623 to the second peripheral wall 624; and a third rib 627c extending from the second peripheral wall 624 to the third peripheral wall 625. The respective ribs 627a, 627b, 627c may be arranged on the same straight line extending in the radial direction.

The ribs 627 may include: first boundary ribs 627d arranged at the cut-out portions of the peripheral walls 623, 624, 625 and extending in the radial direction; and a second boundary rib 627e disposed at a cut-out portion of the peripheral walls 623, 624, 625, and spaced apart from the first boundary rib 627d in the circumferential direction.

It is understood that the first boundary rib 627d is a single rib 627d in which a first rib 627a, a second rib 627b and a third rib 627c are connected to each other to form a continuous surface. The first boundary rib 627d may extend in a radial direction and be disposed adjacent to one side of the first gear 640.

It is understood that the second boundary rib 627e is a single rib 627e in which the first rib 627a, the second rib 627b and the third rib 627c are connected to each other to form a continuous surface, and may be disposed to be spaced apart from the first boundary rib 627d in the circumferential direction and adjacent to the other side of the first gear 640.

The first gear 640 may be disposed between the first and second boundary ribs 627d and 627e and may be rotatable between the first and second boundary ribs 627d and 627 e.

The rotating disk 620 includes a plurality of bearings 680, the plurality of bearings 680 being disposed spaced apart from each other in a circumferential direction of the rotating disk 620 and rotatably supported at the base 610. The bearing 680 may use a Roller (Roller).

The bearing 680 may be disposed between a plurality of ribs 627 spaced apart in the circumferential direction, and the bearing 680 may be disposed between a plurality of second ribs 627 b.

The bearing 680 may be disposed between the radially spaced apart peripheral walls 623, 624, 625, and the bearing 680 may be disposed between the first peripheral wall 623 and the second peripheral wall 624.

The bearing 680 is rotatable about a support shaft 683 (see fig. 19) as described later as a rotation axis when the rotary disk 620 rotates, and is movable in the circumferential direction about the rotation center O. In other words, the bearing 680 can be expressed as rotating around the support shaft 683 as a rotation axis and revolving around the rotation center O as a reference.

The shaft main body 670 may provide a revolution axis P 'extending in an up-down direction and passing through the rotation center O, and the support shaft 683 may provide a rotation axis Q' extending in a radial direction. The revolution axis P 'and the revolution axis Q' may be perpendicular. The bearing 680 may move in a circumferential direction around the revolution axis P 'while rotating around the rotation axis Q' when the rotation disc 620 rotates.

The rotating disk 620 may include a convex receiving portion 620i formed to protrude downward. The protrusion accommodating part 620i may form a lower boundary of the groove 520e1 into which a protrusion (not shown) protruding from the lower case 120 is inserted, and may be disposed between the plurality of ribs 627. The boss accommodating part 620i may fix the lower case 120 to the rotary disk 620 by fixing the boss of the lower case 120, but the boss accommodating part 620i may not be formed and the lower case 120 may be fixed only by the lower boss 628.

Next, the detailed structure and arrangement position of the bearing 680 according to another embodiment of the present invention will be described with reference to fig. 19. Fig. 19 shows the form of the rotating disk 620 viewed from below to directly above.

A cut portion 620s3 for disposing the first gear 640 may be formed between the first and second boundary ribs 627d and 627 e. It is understood that the cut portion 620s3 is a portion where a part of the peripheral walls 623, 624, 625 is cut.

The first gear 640 may be rotatably disposed in the cut-out portion 620s3, and a rib 627a1 extending from the edge 620h toward the first gear 640 may be formed at the cut-out portion 620s 3. A boss supporting part 629b may be formed at the cut part 620s3, the boss supporting part 629b being connected to the stopper boss 529a and extending downward.

A seat protrusion 626d protruding radially outward from the seat outer wall 626a may be formed at the shaft seat 626. The seating protrusions 626d may be formed in plural at intervals in the circumferential direction.

The bearing 680 may include: a first supporting protrusion 681a coupled to the first peripheral wall 623; a second support protrusion 681b coupled to the second peripheral wall 624; a wheel 683 disposed between the first supporting projection 681a and the second supporting projection 681 b; and a support shaft 682 extending from the first supporting projection 681a toward the second supporting projection 681b, penetrating the wheel 683, and extending to face the base 610.

The first supporting projection 681a may be configured to be fixed to the first peripheral wall 623, and the second supporting projection 681b may be configured to be fixed to the second peripheral wall 624.

The support shaft 682 may be coupled with the first and second supporting protrusions 681a and 681b and support the rotation of the wheel 683.

Wheel 683 can be rotatably supported by support shaft 682 and can rotate about a radially extending axis of rotation. The wheel 683 may be rotatably coupled to the support shaft 682.

A plurality of bearings 680 may be arranged at intervals in the circumferential direction, and six bearings 680 may be arranged at intervals.

The plurality of bearings 680 may be divided into a first bearing 680a disposed between the plurality of ribs 627, a second bearing 680b disposed adjacent to the boundary ribs 627d, 627e, and a third bearing 680c disposed adjacent to the boss accommodating portion 620 i. However, the first bearing 680a, the second bearing 680b, and the third bearing 680c are distinguished based on the arrangement positions of the plurality of bearings 680, and thus the structures of the respective bearings 680a, 680b, and 680c may be the same.

The second bearing 680b may include a one-side bearing 680b1 disposed adjacent to the first boundary rib 627 d; and the other side bearing 680b2 disposed adjacent to the second boundary rib 627 e. Here, the adjacent arrangement may mean that the second bearing 680b is arranged between the rib 627 positioned closest to the boundary ribs 627d, 627e and the boundary ribs 627d, 627 e. One side bearing 680b1 may be disposed between a rib 627 adjacent to a first boundary rib 627d and the first boundary rib 627d, while the other side bearing 680b2 may be disposed between a rib 627 adjacent to a second boundary rib 627e and the second boundary rib 627 e. The second bearing 680b is disposed to enhance the weak rigidity of the cut-out portion 620s3 where the peripheral walls 623, 624, 625 are not formed. Further, by disposing the second bearing 680b adjacent to the cutout portion 620s3, it is possible to maximally suppress vibration generated by the first gear 640 disposed in the cutout portion 620s3 rotating while meshing with the second gear 650.

The third bearing 680c may include a one-side bearing 680c1 disposed apart from one side of the boss receiving part 620i, and another-side bearing 680c2 disposed apart from the other side of the boss receiving part 620 i. The third bearing 680c may be disposed adjacent to the boss receiving portion 620i, and herein, the adjacent disposition may mean that the third bearing 680c is disposed between two ribs 627 closest to the boss receiving portion 620 i. With the arrangement of the third bearing 680c, the weak rigidity of the vicinity area where the boss accommodating portion 620i is formed can be enhanced.

The first bearing 680a may be all bearings other than the second bearing 680b and the third bearing 680 c.

The first gear 640 may be engaged and rotated with the second gear 650 at a position radially inward of the bearing 680. This may mean that the third distance R3 from the rotation center O to the motor shaft 632 is smaller than the fourth distance R4 from the rotation center O to the support shaft 683 of the bearing 680. The above-described structure has an effect that vibration generated by rotation of the first gear 640 can be effectively reduced by disposing the bearing 680 outside the first gear 640 while enhancing required kinetic energy efficiency by minimizing a power transmission path from the rotation shaft 632 to the rotation center O of the first gear 640. Further, by disposing the bearing 680 as close to the edge 620h as possible, the load of a heavy structure rotating on the upper side of the rotary disk 620 can be uniformly dispersed in the radial direction, and the blower 1 can be effectively supported.

Next, referring to fig. 20, the connection relationship between the internal structure of the base 610 and the base 610, the rotary plate 620, the substrate cover 160, and the lower housing 120 according to another embodiment of the present invention will be described. Fig. 20 is a partially enlarged view of the drive unit 600 in a longitudinal sectional view of the blower 1.

A control space 150s for accommodating the substrates 152 and 153 is formed inside the substrate cover 160. The substrates 152, 153 can be divided into: a first substrate 152 controlling driving of the driving unit 600, the airflow inverter 400, and the fan assembly 300; and a second substrate 153 controlling driving of the heater 240.

At least a portion of the motor 630 may be disposed within the control volume 150s of the substrate enclosure 160. The motor 630 may rotate within the substrate enclosure 160.

Since the coupling structure of the rotating disk 620, the substrate cover 160, and the lower housing 120 to each other is the same as that of an embodiment of the present invention, a detailed description thereof will be omitted.

A space 610s2 into which the shaft main body 670 is inserted may be formed inside the base 610, and the space 610s2 may be formed inside the stem 611.

The shaft main body 670 may include: a first body 671 disposed in the rotation shaft cover body 615; and a drum 674 connected to the first body 671, disposed under the first body 671, and accommodated in the interior of the base 610.

The drum 674 may be disposed below the rotation shaft cover 615, and may have a cylindrical shape in which an electric wire penetration portion 670s is formed. A fastening boss 675 protruding upward may be formed at the drum 674, and the fastening boss 675 may fix the shaft body 670 to the rotating disk 620 by being inserted into the protrusion 626b of the shaft seat 626.

The electric wire 690 receiving electric power from an external power source (not shown) may be wound a predetermined number of times along the outer circumferential surface of the drum 674, and may extend upward through an electric wire penetration portion 670s formed inside the drum 674 to be electrically connected to the motor 630. With the structure of the drum 674 and the wire penetration portion 670s, the wire 690 is prevented from being twisted by the rotation of the rotating disk 620, and the electrical connection between the wire 690 and the motor 630 can be smoothly maintained.

The turntable 620 may be coupled with the substrate enclosure 160 by an upper stud 629 protruding toward the upper side of the turntable 620.

A gap G spaced up and down may be formed between the base 610 and the rotary plate 620. It can be understood that the gap G is a spaced space between the first line L1 extending along the bottom surface of the rotating disk 620 and the second line L2 extending along the top surface of the base 610.

The gap G may be formed by configuring the bearing 680 to protrude from the rotating disk 620 toward the base 610. Specifically, the bearing 680 may be configured to protrude further to a lower side than the bottom surface of the rotary disk 620, and may protrude from the bottom surface of the rotary disk 620 toward the base 610 by an interval corresponding to the gap G. The bottom surface of the rotary plate 620 may be spaced apart from the top surface of the base 610 without contacting, and the rotary plate 620 is rotatably supported to the base 610 only by the bearing 680. With the above-described structure, the rotating disk 620 can rotate in a state of maintaining the gap G with the base 610 during the rotation of the rotating disk 620, whereby the abrasion of the driving unit 600 caused by the friction generated between the rotating disk 620 and the base 610 can be prevented.

Next, an operation of the driving unit 600 according to another embodiment of the present invention will be described with reference to fig. 16 to 20.

When the motor 630 rotates the motor shaft 632 by the electric power received through the electric wire 690, the first gear 640 connected to the motor shaft 632 rotates. The second gear 650 may be in a state of being fixed to the boundary wall 614, and the first gear 640 rotates along the outer circumference of the second gear 650 extending in the circumferential direction. As the first gear 640 rotates, the rotating disk 620 rotates in the circumferential direction with the shaft main body 670 as a rotation shaft. During rotation of rotating disk 620, the rotation of rotating disk 620 is supported by a bearing 660 that rotates at least partially with shaft seat 626. As the rotating disk 620 rotates, the bearing 680 rolls (Rolling) on the top surface of the base 610. The bearing 680 may roll between a pair of rails 613 and may support a load through the base 610. When the rotary disk 620 rotates, the bearing 680 moves in the circumferential direction around the revolution axis P 'while rotating around the rotation axis Q'.

The plurality of bearings 680, which are disposed at intervals in the circumferential direction and directly supported by the base 610, can stably support the rotation of the blower 1 by uniformly distributing the heavy load of the blower 1 main body to the base 610 disposed on the floor.

In addition, since the bearing 680 rolls (Rolling) on the top surface of the base 610 and supports the load of the main body of the blower 1, abrasion due to friction generated between the bearing 680 and the surface of the base 610 can be prevented.

The bearing 580 according to the embodiment of the present invention and the bearing 680 according to the other embodiment of the present invention described above are different from each other in structure and operation. However, the structures of the driving unit 500 according to an embodiment of the present invention and the driving unit 600 according to another embodiment of the present invention other than the bearings 580 and 680 may be the same, but are not necessarily limited thereto.

Next, a driving unit 700 according to still another embodiment of the present invention will be described with reference to fig. 21 to 25.

Referring to fig. 21 and 22, the driving unit 700 may be disposed at a lower side of the lower case 120 and support a load of the blower 1. The drive unit 700 may rotate the blower 1 main body.

The driving unit 700 may include: a base 760; a motor 710 disposed on the upper side of the base 760 for supplying power; the bearing 730 is disposed above the base 760 and supported by the base 760.

The base 760 may be fixed to the floor without movement. The motor 710 may be disposed at an upper side of the base 760.

The base 760 may be formed with a bearing installation part 731 protruding toward an upper side of the base 760. The bearing disposing part 731 may be a hollow cylindrical shape.

The bearing 730 may have a ring shape, and may be disposed at an upper side of the bearing disposing part 731. The bearing 730 is rotatable on the upper side of the bearing disposing part 731.

A rotation shaft installation part 713 may be disposed inside the bearing installation part 731. The rotation shaft arrangement part 713 may protrude upward from the base 760. The rotation shaft setting part 713 may be disposed at a central portion of the base 760 and may be integrally formed with the base 760.

The vertically extending rotation shaft 711 may be rotatably disposed in the rotation shaft installation portion 713. The rotation shaft 711 can be rotated in a state of being inserted into the rotation shaft setting part 713. The rotation shaft installation part 713 may disperse the load of the blower 1 concentrated on the rotation shaft 711 to the base 760.

A shaft coupling member 712 coupled to the rotation shaft 711 may be rotatably disposed on an upper side of the rotation shaft disposing part 713. The shaft coupling member 712 is rotatable together with the rotation shaft 711 with reference to the upper and lower shafts.

The rotation shaft 711 and the shaft coupling member 712 may be rotated by power transmitted from the motor 710. The blower 1 can be rotated by the rotation of the rotation shaft 711 and the shaft coupling member 712, and the rotation shaft installation portion 713 and the bearing 730 can support the load of the blower 1.

The driving motor shaft 715 connected to the motor 710 may be extended in a radial direction and horizontally arranged. The driving motor shaft 715 rotated by the driving of the motor 710 can transmit power to a power transmission member 740, which will be described later.

The motor 710 may be fixed to the base 760.

Referring to fig. 23 to 25, the lower housing 120 may be rotated by the driving unit 700.

The lower case 120 may include: an outer case 123 formed with a suction hole 121; and an inner housing 124 disposed inside the outer housing 123. The outer case 123 and the inner case 124 may be formed as one body.

The outer case 123 may be cylindrical in shape, and a sectional area thereof may become narrower as approaching the upper side. The outer case 123 may form the outer shape of the lower case 120.

The inner case 124 may be a cylindrical shape having a space formed at an inner side thereof. A substrate cover 160 may be disposed on an upper side of the inner case 124. The inner housing 124 may perform the same function as the rotating disks 520, 620 in one embodiment of the present invention, another embodiment of the present invention. The inner case 124 may support the entire load of the blower 1 except for the driving unit 700. The inner case 124 can rotate all the structures of the blower 1 disposed above the driving unit 700.

The inner housing 124 may include: an upper side wall 124a to which a rotating shaft 711 is attached; and a side wall 124b protruding downward from the upper side wall 124 a.

The upper sidewall 124a may be disc-shaped. A substrate cover 160 may be disposed on an upper side of the upper sidewall 124 a. The rotation shaft 711 may be directly inserted into the upper sidewall 124a and rotated together with the upper sidewall 124 a. The shaft coupling member 712 may be connected with the upper sidewall 124a and rotate the upper sidewall 124 a.

The sidewall 124b may extend in a circumferential direction of the lower case 120, and may be a cylindrical shape with a space formed inside. The side wall 124b may be connected with the outer case 123 and transmit rotational power to the outer case 123.

The power transmission member 740, which transmits the power generated by the motor 710 to the inner case 124, may include: a drive gear 741 connected to the motor 710 by a drive motor shaft 715; and a rack 742 engaged with the driving gear 741.

The driving gear 741 may be directly connected with the motor 710 using the driving motor shaft 715 and transmit power generated by the motor 710 to the rack 742.

The rack 742 may protrude radially inward from the side wall 124b of the inner housing 124. The rack 742 may extend in a circumferential direction, and may be formed with teeth (Gear teeth) protruding to a lower side. The rack 742 may be formed in a ring shape or an arc shape.

The rack 742 is engaged with the drive gear 741 to be movable in the circumferential direction. The lower housing 120 and the structure disposed on the upper side of the inner housing 124 can be rotated together by the rack 742 moving in the circumferential direction.

The bearing 730 may be disposed on the underside of the inner housing 124. The bearing 730 may rotate together with the rotation of the inner housing 124. The bearing 730 may support the inner housing 124 and the bearing 730 may use a thrust bearing.

Next, the light emitting unit 750 that provides the identification mark for the rotational driving of the blower 1 will be described with reference to fig. 21 to 25.

The light emitting assembly 750 may include: a light emitting part 751 for emitting light by receiving power; a circuit board 752, on which a light emitting part 751 is provided; and a light transmitting member 753 guiding light generated by the light emitting part 751 to the outside of the blower 1.

The circuit substrate 752 may be disposed on an upper side of the base 760, and may be formed in a ring shape or an arc shape. The circuit board 752 may be disposed below the driving gear 741. The circuit substrate 752 may be disposed between the base 760 and the lower housing 120.

The base 760 may be formed with a substrate support rib 752a protruding upward from the base 760. The substrate support ribs 752a may be formed in plural numbers spaced apart from each other in the circumferential direction. The substrate support ribs 752a may support the circuit substrate 752.

The light emitting part 751 may be disposed on a bottom surface of the circuit substrate 752 and irradiate light to a lower side of the circuit substrate 752. The light emitting members 751 may be arranged in plural spaced apart relation to each other in a circumferential direction. The light emitting part 751 may use an LED lamp.

The light transmitting member 753 may be disposed at a lower side of the lower housing 120 and may be disposed at an upper side of the base 760. The light transmitting member 753 may be disposed between the lower housing 120 and the base 760.

The light transmitting member 753 may be formed in a ring shape or an arc shape. The light transmitting member 753 may be disposed at a lower side of the light emitting part 751.

The light transmitting member 753 may include: a first face 753a into which light irradiated from the light emitting member 751 is incident; and a second face 753b through which light that enters the light-transmitting member 753 through the first face 753a and travels inside the light-transmitting member 753 is emitted to the outside of the blower 1.

Light incident from the first face 753a can be refracted within the light-transmitting member 753 and travel toward the second face 753 b. The longitudinal sectional shape of the light transmitting member 753 may be bent toward the radially outer side.

The second face 753b may extend in the circumferential direction and form a continuous face with the outer peripheral face 761 of the base 760.

If the blower 1 is rotated by being applied with power of the motor 710, power may be applied to the light emitting part 751 corresponding to a range in which the blower 1 is rotated. The plurality of light emitting parts 751 may be simultaneously or sequentially lighted along with the rotation of the blower 1.

Although the preferred embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the specific embodiments described above, and various modifications can be made by those skilled in the art without departing from the technical spirit of the present invention claimed in the claims.