阅读说明：本技术 送风机 (Air blower ) 是由 金容民 金厚辰 崔致英 朴亨镐 于 2021-05-28 设计创作，主要内容包括：本发明涉及一种送风机,本发明的实施例的送风机包括：下部外壳,其形成有吸入口；风扇,其配置于所述下部外壳的内部；上部外壳,其配置于所述下部外壳的上侧,在所述上部外壳的内部形成有用于使从所述风扇吹送的空气进行流动的空间；吐出口,其贯通所述上部外壳且长长地形成；以及流动引导件,其配置于所述空间,并且沿着与所述吐出口的长度方向交叉的方向延伸,因此具有如下优点：被风扇吹向上方的空气通过流动引导件引导至吐出口,从而经由吐出口在上下方向上均匀地吐出空气。(The present invention relates to a blower, and a blower of an embodiment of the present invention includes: a lower housing having a suction port; a fan disposed inside the lower housing; an upper housing disposed above the lower housing, the upper housing having a space formed therein for flowing air blown from the fan; a discharge port formed through the upper housing and extending long; and a flow guide disposed in the space and extending in a direction intersecting with a longitudinal direction of the discharge port, and therefore, has the following advantages: the air blown upward by the fan is guided to the discharge port by the flow guide, and is discharged uniformly in the vertical direction through the discharge port.)

1. A blower, comprising:

a lower housing formed with a suction hole;

a fan disposed inside the lower housing;

an upper housing disposed above the lower housing, the upper housing having a space formed therein through which air blown by the fan flows;

a discharge port formed through the upper housing and extending long; and

and a flow guide disposed in the space and extending in a direction intersecting with a longitudinal direction of the discharge port.

2. The blower according to claim 1, wherein,

the flow guide is provided in a plurality of numbers,

the plurality of flow guides are spaced apart from each other in a longitudinal direction of the discharge port and are aligned with each other in the longitudinal direction of the discharge port.

3. The blower according to claim 2, wherein,

the plurality of flow guides are spaced apart rearward from a front end of the upper housing to form a space.

4. The blower according to claim 3, wherein,

an interval between the flow guide and the front end of the upper housing is formed to be gradually smaller from a lower side to an upper side.

5. The blower according to claim 4, wherein,

the discharge port extends so as to be inclined forward as it goes upward,

the front end of the upper housing is inclined so as to be closer to the flow guide and the discharge port as it goes to the upper side.

6. The blower according to claim 2, wherein,

each of the plurality of flow guides includes:

a guide front end facing a front end of the upper housing; and

a guide rear end connected to a rear end of the upper housing,

the plurality of flow guides includes:

a second guide protruding toward an upper side, a guide rear end of the second guide being disposed higher than a guide front end; and

a third guide disposed higher than the second guide and protruding toward an upper side, a rear end of the third guide being disposed lower than a front end of the third guide.

7. The blower according to claim 1, wherein,

further comprising a heater disposed in the space,

the heater includes:

a heat dissipation pipe extending in an up-down direction;

a plurality of heat radiating fins extending in a direction intersecting with an extending direction of the discharge port and spaced apart from each other, the heat radiating pipe penetrating the plurality of heat radiating fins; and

a heating flow path formed between the plurality of heat dissipation fins,

the discharge port and the flow guide are disposed between the heat dissipating fins and the rear end of the upper housing.

8. The blower according to claim 1, wherein,

the upper housing includes:

a tower base connected with the lower housing;

a first tower extending upward from the tower base and having a first discharge port formed therein;

a second tower extending upward from the tower base and having a second discharge port formed therein, and an air supply space formed between the second tower and the first tower;

a third discharge port formed in the tower base so as to be opened in the vertical direction; and

and a guide vane disposed at the third discharge port.

9. The blower according to claim 8,

the guide blade is disposed so as to be inclined forward with respect to the vertical direction.

10. The blower according to claim 1, wherein,

the upper housing includes:

a first tower; and

a second tower separated from the first tower to form an air supply space,

the discharge opening includes:

a first discharge port formed in the first tower so as to extend in the vertical direction; and

a second discharge port formed in the second tower so as to extend in the vertical direction,

the flow guide includes:

a first flow guide disposed inside the first tower and extending in a direction intersecting with an extending direction of the first discharge port; and

and a second flow guide disposed inside the second tower and extending in a direction intersecting with an extending direction of the second discharge port.

Technical Field

The present invention relates to a blower (blower), and more particularly, to a flow guide for guiding a flow of air blown by a fan.

Background

The blower circulates air in an indoor space or forms an air flow toward a user by inducing the flow of the air. In the case of a blower having a filter, the blower can improve the quality of indoor air by purifying contaminated air in a room.

A discharge port is formed in a casing of the blower, and the air pressurized by the fan is discharged to the outside of the casing through the discharge port.

In recent years, in order to supply purified air to a high place in a room by a blower, a blower in which a plurality of discharge ports are arranged vertically or the length of the discharge ports is extended vertically has been manufactured.

However, in the conventional blower, since there is no structure in which the air discharged upward by the fan is uniformly distributed in the vertical direction, there is a problem in that the purified air is intensively supplied to only a local area by the blower.

Documents of the prior art

Patent document

Patent document 1: korean granted patent No. 10-1331487

Disclosure of Invention

An object of the present invention is to provide a blower that uniformly supplies purified air in the vertical direction.

Another object of the present invention is to provide a blower having a simplified air guide structure.

It is a further object of the present invention to provide a blower in which the flow resistance created by the guide is minimized.

It is still another object of the present invention to provide a blower that reduces noise generated by a guide.

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 lower housing formed with a suction hole; a fan disposed inside the lower housing; an upper housing disposed above the lower housing, the upper housing having a space formed therein for flowing air blown from the fan; and a discharge port formed through the upper housing and extending in a long direction.

The blower includes a flow guide disposed in the space and extending in a direction intersecting a longitudinal direction of the discharge port, and air flowing upward can be guided to the discharge port by the flow guide.

The flow guide may be configured in plural.

The plurality of flow guides may be spaced apart from each other in a longitudinal direction of the discharge port.

The plurality of flow guides may be aligned with each other in a length direction of the discharge port.

The discharge port may be formed long along the rear end of the upper housing.

The flow guide may extend from a rear end of the upper housing toward a front end of the upper housing.

The flow guide may be spaced apart from a rear of the front end of the upper case, and a space may be formed between the flow guide and the front end of the upper case.

The interval formed by the flow guides disposed on the lower side may be formed to be larger than the interval formed by the flow guides disposed on the upper side.

The flow guide may include a guide front end facing the front end of the upper housing, and the space may be formed between the guide front end and the front end of the upper housing.

The front end of the upper housing may be formed obliquely such that the front end of the upper housing is closer to the flow guide and the rear end of the upper housing as it goes to the upper side.

The discharge port may extend so as to be inclined forward as it goes upward.

The front end of the upper housing may be formed obliquely such that the front end of the upper housing is closer to the flow guide and the discharge port as it goes to the upper side.

The plurality of flow guides may include a first guide disposed closest to the fan and extending in a manner of being curved toward a lower side as it goes farther forward.

The plurality of flow guides may include a fourth guide disposed farthest from the fan and extending in such a manner as to be inclined toward an upper side as it goes farther forward.

The fourth guide may be in the shape of a flat plate.

The plurality of flow guides may include: a guide front end facing a front end of the upper housing; and a guide rear end connected to a rear end of the upper housing.

The plurality of flow guides may include a second guide which extends in a convex manner toward an upper side, and the guide rear end of the second guide is disposed higher than the guide front end.

The plurality of flow guides may include a third guide disposed higher than the second guide and extending in a convex manner toward an upper side, and the guide rear end of the third guide is disposed lower than the guide front end.

The blower may further include a heater disposed in the space.

The heater may include: a heat dissipating pipe extending in an up-down direction; a plurality of heat radiating fins extending in a direction intersecting with an extending direction of the discharge port and spaced apart from each other in an up-down direction, the heat radiating pipe penetrating the plurality of heat radiating fins; and a heating flow path formed between the plurality of heat radiating fins.

The discharge opening and the flow guide may be disposed between the heat radiating fin and the rear end of the upper housing.

The flow guide may include: a guide rear end connected with the upper housing; and a guide leading end spaced apart from the heat radiating fin.

The upper housing may include: a tower base connected with the lower housing; a first tower extending from the tower base toward an upper side and formed with a first discharge port; a second tower extending upward from the tower base and having a second discharge port formed therein, and an air supply space formed between the first tower and the second tower; a third discharge port formed in the tower base so as to be opened upward and downward; and a guide vane disposed at the third discharge port.

The third discharge port may extend in the front-rear direction on the top surface of the tower base.

The guide vanes may be arranged in plural so as to be spaced apart from each other in the extending direction of the third discharge port.

The guide blade may be configured to be inclined toward the front with respect to the vertical line.

The blower may further include a diffuser (diffuser) disposed at an upper side of the fan and guiding the air discharged from the fan upward.

The third discharge opening and the guide vane may be located on an upper side of the diffuser.

The top surface of the tower base may be formed to be recessed toward a lower side between the first tower and the second tower, and a third discharge port may be formed.

The third discharge port may be formed in a recessed portion of the top surface of the tower base.

The discharge opening may include: a first discharge port formed in the first tower so as to extend in the vertical direction; and a second discharge port formed in the second tower so as to extend in the vertical direction.

The flow guide may include: a first flow guide disposed inside the first tower and extending in a direction intersecting with an extending direction of the first discharge port; and a second flow guide that is disposed inside the second tower and extends in a direction intersecting with an extending direction of the second discharge port.

The first tower may include a first inner sidewall formed to protrude toward the air supply space and formed with the first discharge port.

The second tower may include a second inner sidewall formed to protrude toward the air supply space and formed with the second discharge port.

The first and second flow guides may respectively include guide inner ends, each of which is in contact with the first and second inner side walls.

Specifics of other embodiments are included in the detailed description and the drawings.

The blower according to the present invention has one or more of the following effects.

First, there is an advantage in that air blown upward by the fan is guided to the discharge port by the flow guide, and thus the air is uniformly discharged in the vertical direction through the discharge port.

Secondly, there is an advantage in that by adjusting the interval between the flow guide and the upper case, the flow rate can be uniformly distributed according to the interval distance between these and the fan.

Thirdly, there is an advantage in that the plurality of flow guides are formed in different shapes according to the arrangement position, thereby reducing flow resistance and reducing noise.

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 view of the blower shown in fig. 1 taken along line P-P'.

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

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

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

Fig. 6 is an operation example diagram 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 cut-away view of a portion of a blower in accordance with an embodiment of the present invention.

Fig. 9 is a side view of the blower shown in fig. 8.

Fig. 10 is a longitudinal sectional view of a blower according to another embodiment of the present invention.

Fig. 11 is a longitudinal sectional view of a blower according to still another embodiment of the present invention.

Fig. 12 is a graph showing the operation and effect of the blower according to the further embodiment of the present invention.

Fig. 13 is a graph showing the operation and effect of the blower according to the further embodiment of the present invention.

Description of the reference numerals

100: the suction module 110: base seat

120: lower housing 130: filter

200: the air supply module 210: tower base

220: first tower 230: second tower

240: the heater 300: fan assembly

320: the fan 400: airflow converter

500: the flow guide 520: first flow guide

530: second flow guide

Detailed Description

The advantages and features of the present invention and methods of accomplishing the same will become apparent from the following drawings and detailed description of the embodiments. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various forms, which are provided only for the purpose of completeness of disclosure and to inform those of ordinary skill in the art to which the present invention pertains of the scope of the present invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

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

The overall structure of the blower 1 is first explained with reference to fig. 1. Fig. 1 shows the overall appearance of a blower 1.

The blower 1 may be referred to as an air conditioner, an air cleaning fan, an air cleaner, or another name 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 with a smaller diameter toward 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 is narrower toward the upper side, there is an advantage that the center of weight becomes lower and the risk of falling down by receiving an external impact is reduced. However, unlike the present embodiment, the cross section may not be narrower toward the upper side.

The suction module 100 may be formed to have a diameter gradually decreasing toward the upper end, and the blower module 200 may be formed to have a diameter gradually decreasing toward the upper end.

The inhalation module 100 may include: a base 110; a lower housing 120 disposed above the base 110; and a filter 130 disposed inside the lower case 120.

The base 110 may be placed on the floor and may support the load of the blower 1. The lower housing 120 and the filter 130 may be disposed at an upper side of the base 110.

The lower housing 120 may have a cylindrical shape and may have a space in which the filter 130 is disposed formed therein. The lower housing 120 may be formed with a suction hole 121 opened to 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 and may filter impurities contained in the air flowing in through the suction hole 121.

The blower module 200 may be separated into two vertically extending columns and arranged. The air supply module 200 may include a first tower 220 and a second tower 230 that are disposed in a spaced-apart manner from each other. The air supply module 200 may include a tower base 210 connecting a first tower 220 and a second tower 230 with the suction module 100. The tower base 210 may be disposed above the suction module 100 and may be disposed 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 concavely downward, and may form a tower base upper surface 211 extending in the front-rear direction. 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 an integrated body. The tower base 210 and the first tower 220 may form a continuous outer peripheral surface of the blower 1, and the tower base 210 and the second tower 230 may form a continuous outer peripheral 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 disposed in a spaced-apart manner from each other, and a blowing gap S may be formed between the first tower 220 and the second tower 230.

The blowing gap S may be understood as a space between the first tower 220 and the second tower 230 opened in front, rear, and upper directions.

The blowing module 200 including the first tower 220, the second tower 230, and the blowing gap S may have 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 arranged in a symmetrical manner with respect to the blowing gap S. By arranging the first tower 220 and the second tower 230 in a symmetrical manner, the flow of air is evenly distributed within the blowing gap S, thereby further facilitating 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 be included in and may be a subset 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 along the front-rear direction.

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

By forming the width of the blowing gap S to be constant in the vertical direction, the air flowing forward of the blowing gap S can be uniformly distributed in the vertical 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 may be formed lower, and a deviation in velocity may occur with the vertical direction as a reference. When the flow rate of 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 may be utilized as a space where the discharged air merges and mixes (Mix). 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 straightness 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 induced 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 of the first tower 220; a first tower front end 221b forming a front aspect of the first tower 220; a first tower rear end 221c forming a rear aspect of the first tower 220; a first outer sidewall 221d forming an outer peripheral 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 shell 231 may include: a second tower upper end 231a forming an upper side 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 face of the second tower 230; a second outer sidewall 231d forming an outer peripheral 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 be protruded to the outside in the radial direction, 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 inward in a 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 inward in the radial direction. The second discharge port 232 may be formed to extend in the vertical direction in the second inner wall 231e, and may be formed to open inward in the radial direction.

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 air flow 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 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 slit 223 and the second plate slit 233 may be formed to be open inward in the radial direction.

The first plate body slit 223 may be formed at a position closer to the first tower front end 221b than the 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.

The internal structure of the blower 1 will be described below with reference to fig. 2 and 3. Fig. 2 is a sectional view of blower 1 taken along line P-P 'shown in fig. 1, and fig. 3 is a sectional view of 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 may be disposed on an upper side of the base 110. A control space 150S may be formed on an upper side of the base 110, and the substrate assembly 150 may be disposed in the control space 150S.

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 pass through the filter 130 and flow toward the filter hole 131.

A suction grill 140 may be disposed on an upper side of the filter 130, and the air passing through the filter 130 and flowing upward passes through the suction 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 pressing 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) that connects the first and second towers 220, 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 520 guiding a flow direction of air within the first distribution space 220 s. The first flow guide 520 may be disposed in plural numbers in such a manner as to be spaced apart from each other in the up-down direction.

First flow guide 520 may be formed to protrude from first tower rear end 221c toward first tower front end 221 b. The first flow guide 520 may be spaced apart from the first tower front end 221b in the front-to-rear direction. The first flow guide 520 may extend to be inclined toward a lower side as it goes to the front. Among the plurality of first flow guides 520, the first flow guide 520 disposed on the upper side is inclined downward at a smaller angle. The detailed description thereof will be described later.

The second tower 230 may include a second flow guide 530 guiding a flow direction of air within the second distribution space 230 s. The second flow guide 530 may be disposed in plural numbers in such a manner as to be spaced apart from each other in the up-down direction.

The second flow guide 530 may be formed to protrude from the second tower rear end 231c toward the second tower front end 231 b. The second flow guide 530 may be spaced apart from the second tower front end 231b in the front-rear direction. The second flow guide 530 may be extended obliquely downward the farther forward it goes. Among the plurality of second flow guides 530, the second flow guide 530 disposed on the upper side is inclined downward at a smaller angle. The detailed description thereof will be described later.

The first flow guide 224 may guide the air discharged from the fan assembly 300 toward the first discharge port 222. The second flow guide 530 may guide the air discharged from the fan assembly 300 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 receiving power from the fan motor 310 and rotating; and a guide vane 340 guiding the air pressurized by the fan 320 to an upper side.

The fan motor 310 may be disposed on 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 port 222 may extend from one side 211a of the tower base top surface 211 toward the upper side. The first spout lower end 222d may be formed on one side 211a of the tower base top 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 obliquely in the vertical direction. The first discharge port 222 may be formed to be inclined forward as it goes upward. The first discharge port 222 may extend rearward at an angle 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 obliquely in the vertical 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 rearward at an inclination with respect to a vertical axis Z extending in the vertical direction.

The first tower 220 may include a first discharge guide 225 that guides air in the first distribution space 220s to the first discharge port 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.

Hereinafter, an air discharge structure of the blower 1 for inducing the coanda effect will be described with reference to fig. 4 and 5. Fig. 4 is a view showing a form of the blower 1 as viewed from above toward directly below, and fig. 5 is a view showing a form of the blower 1 as viewed from above by cutting the blower 1 along the line R-R' shown in fig. 1.

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

The first and second inner sidewalls 221e and 231e may be convexly formed toward the inside in the radius direction, and a shortest distance D0 may be formed between the vertexes 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. First tower back end 221c and second tower back end 231c may be separated by a second separation dimension 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 obliquely to the front-rear direction axis X.

Tangents drawn on the first tower front end 221b and the second tower front end 231b, respectively, 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 so as to have the above-described inclination angle a with respect to the front-rear direction 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 air flow 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 converter 402, which will be 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 toward the blowing gap S may be guided by the first discharge guide 225 and the second discharge guide 235.

The first spouting guide 225 may include: a first inner guide 225a connected to the first inner sidewall 221 e; and a first outer guide 225b connected to the first outer sidewall 221 d.

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

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

The first inner guide 225a may be protrudingly formed 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 outside the first inner guide 225a, and may form the first discharge port 222 with the first inner guide 225 a.

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 flow 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 231 e; and a second outer guide 235b connected to the second outer sidewall 231 d.

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

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

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

The second outer guide 235b may be protrudingly formed from the second outer sidewall 231d toward the second distribution space 230 s. The second outer guide 235b may be formed spaced apart outside the second inner guide 235a, and may form the second discharge port 232 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 gradually decrease from the inlet to the outlet of the first discharge guide 225 and then gradually increase.

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

The inlet 222i of the first discharge orifice 222 may have an inlet width w 1. The outlet 222o of the first discharge orifice 222 may have an outlet width w 3. The inlet 222i of the first discharge opening 222 may be located behind the outlet 222 o. The air flowing into the first discharge port 222 may flow forward from the inlet 222i toward the outlet 222 o.

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 in magnitude 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 port 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 a distribution having the same width as the first discharge guide 225, as the first discharge guide 225.

Next, the wind direction conversion by the airflow converter 400 will be described with reference to fig. 6 and 7. Fig. 6 is a diagram illustrating a state in which the airflow converter 400 protrudes into the air blowing space S and the blower 1 forms an ascending airflow, and fig. 7 is a diagram for explaining an operation principle of the airflow converter 400.

Referring to fig. 6, the air flow converter 400 may be protruded toward the blowing gap S, and may convert the flow of air spouted forward through the blowing gap S into an updraft.

The airflow converter 400 may include: a first air flow converter 401 disposed in the first tower shell 221; the second airflow converter 402 is disposed in the second tower casing 231.

The first air flow switcher 401 and the second air flow switcher 402 protrude from the first tower 220 and the second tower 230, respectively, toward the blowing gap S, so that the front of the blowing gap S can be shut off.

When the first and second air flow switching devices 401 and 402 protrude and block the front of the blowing gap S, the air discharged through the first and second discharge ports 222 and 232 can flow upward Z while being blocked by the air flow switching device 400.

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

Referring to fig. 7, the airflow converters 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.

The first airflow converter 401 will be described below as an example, but the description of the first airflow converter 401 described below 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 the pinion 421 and rotate the pinion 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 to protrude 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 moved in a diagonal manner within the guide slot 450 as the board 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 surface 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 to 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.

The arrangement of the flow guide 500 will be described below with reference to fig. 8. Fig. 8 is a view of the internal structure of the second tower 230 and the tower base 210 shown by cutting a part of the casing in the blower 1 shown in fig. 1.

The flow guide 500 may include: a first flow guide 520 disposed at the first tower 220; and a second flow guide 530 disposed at the second tower 230. The first and second flow guides 520 and 530 may have the same structure, and may be symmetrical to each other with the blowing space S as a reference. The following description of the second flow guide 530 applies equally to the first flow guide 520.

The fan assembly 300 may cause air outside the blower 1 to flow into the lower casing 120 through the suction hole 121. The air flowing into the lower housing 120 may pass through the filter holes 131 and flow to the pressurized space 300 s. The lower housing 120 may include a housing door 129, and the housing door 129 may be detachably coupled to the lower housing 120. If the case door 129 is separated from the lower case 120, the filter 130 may be in a state of being able to be drawn out from the inside of the case.

The air flowed into the pressurized space 300s by the fan assembly 300 may flow into the second tower 230 through the second distribution space 230 s. The air flowing into the second tower 230 may flow upward, and the flow direction thereof may be guided by the second flow guide 530.

The second flow guide 530 may be disposed at an upper side of the fan assembly 300, and may be disposed inside the second distribution space 230 s.

The second flow guide 530 may be arranged in a plurality in a vertically spaced manner. The number of the second flow guides 530 is not limited, but may be configured with four.

The second flow guide 530 may extend from the second tower rear end 231c toward the second tower front end 231b in a horizontal direction. The guide back end 532 of the second flow guide 530 may be connected to the second tower back end 231 c. Guide front end 531 of second flow guide 530 may be spaced rearward of second tower front end 231 b.

The second flow guide 530 may have a plate shape extending in a horizontal direction, and may have a curved shape. The guide inner end 533 of the second flow guide 530 may be abutted or connected to the second inner sidewall 231 e. The guide outer end 534 of the second flow guide 530 may be abutted or attached to the second outer sidewall 231 d. The second flow guide 530 may have a plate shape extending and bent between the second inner sidewall 231e and the second outer sidewall 231 d.

Hereinafter, the structure of the flow guide 500 will be described in detail with reference to fig. 9. Fig. 9 is a diagram showing a shape of the blower 1 shown in fig. 8 as viewed from a side.

Hereinafter, the flow guide 500 will be described as an example of the second flow guide 530 for convenience of description, but the description of the second flow guide 530 may be applied to the first flow guide 520 as well.

The second flow guide 530 may be configured closer to the second tower trailing end 231c than the second tower leading end 231 b. Guide front end 531 can be spaced rearwardly of second tower front end 231b and guide rear end 532 can be spaced forwardly of second tower rear end 231 c.

Since the guide rear end 532 is coupled to the second tower rear end 231c, the second flow guide 530 may be fixed to the second tower casing 231. Since the guide inside end 533 and the guide outside end 534 are coupled to the second inner sidewall 231e and the second outer sidewall 231d, respectively, the second flow guide 530 may be fixed to the second tower housing 231.

The flow guide 500 may be provided in plural numbers so as to be spaced apart in the vertical direction. The flow guide 500, 520, 530 may include: a first guide 530 a; a second guide 530b disposed on an upper side of the first guide 530 a; a third guide 530c disposed on an upper side of the second guide 530 b; and a fourth guide 530d disposed on an upper side of the third guide 530 c.

The first guide 530a may refer to the flow guide 500 disposed at the lowermost side among the plurality of flow guides 500. A bottom surface of the first guide 530a may face the fan assembly 300, and a top surface of the first guide 530a may face a bottom surface of the second guide 530 b.

The second guide 530b may refer to the flow guide 500 disposed adjacent to the first guide 530a among the plurality of flow guides 500. A bottom surface of the second guide 530b may face a top surface of the first guide 530a, and a top surface of the second guide 530b may face a bottom surface of the third guide 530 c.

The third guide 530c may refer to the flow guide 500 disposed adjacent to the fourth guide 530d among the plurality of flow guides 500. A bottom surface of the third guide 530c may face a top surface of the second guide 530b, and a top surface of the third guide 530c may face a bottom surface of the fourth guide 530 d.

The fourth guide 530d may refer to the uppermost flow guide 500 among the plurality of flow guides 500. A bottom surface of the fourth guide 530d may face a top surface of the third guide 530c, and a top surface of the fourth guide 530d may face the second tower upper end 231 a.

The second guide 530b and the third guide 530c may also refer to the flow guide 500 disposed between the first guide 530a and the fourth guide 530 d.

The flow guide 500 may be formed in a curved shape. A portion of the plurality of flow guides 500 may be formed to protrude toward the upper side. A portion of the plurality of flow guides 500 may extend obliquely toward the upper side. A portion of the plurality of flow guides 500 may be formed in a flat plate shape. A portion of the plurality of flow guides 500 may be formed to be bent toward a lower side.

The first guide 530a may be formed to be curved downward toward the front. The guide front end 531a of the first guide 530a may be located further downward than the guide rear end 532 a. The first guide 530a may be curved and extended from the tower rear end 231c toward the front in the horizontal direction, or may be curved toward the lower side as it extends to the front. A tangent to the guide front end 531a of the first guide 530a may have a downward inclination angle θ 1 with respect to the horizontal direction.

The second guide 530b may be formed to protrude toward the upper side. The second guide 530b may curvedly extend from the tower rear end 231c toward the front, and may have a shape convex toward the upper side. The guide front end 531b of the second guide 530b may be located further downward than the guide rear end 532 b. A tangent to the guide front end 531b of the second guide 530b may have a downward inclination angle θ 2 with respect to the horizontal direction. A tangent to the guide rear end 532b of the second guide 530b may have an inclination angle α 1 directed downward with respect to the horizontal direction.

The third guide 530c may be formed to protrude toward the upper side. The third guide 530c may curvedly extend from the tower rear end 231c toward the front, and may have a shape convex toward the upper side. The guide front end 531c of the third guide 530c may be located more upward than the guide rear end 532 c. A tangent line to the guide front end 531c of the third guide 530c may have a downward inclination angle θ 3 with respect to the horizontal direction. A tangent to the guide rear end 532c of the third guide 530c may have an inclination angle α 2 facing downward with respect to the horizontal direction.

The fourth guide 530d may extend obliquely toward the upper side. The fourth guide 530d may extend from the tower rear end 231c toward the front, and may have a flat plate shape. The guide front end 531d of the fourth guide 530d may be located more upward than the guide rear end 532 d. The top and bottom surfaces of the fourth guide 530d may have an inclination angle θ 4 facing upward with respect to the horizontal direction. The inclination angle θ 4 of the fourth guide 530d may be kept constant in the front-rear direction.

Each of the plurality of flow guides 530a, 530b, 530c, 530d may be formed to be spaced apart from the tower front end 231b by a distance different from each other.

The first guide 530a may be spaced apart from the tower front end 231b by a first spacing G1. The second guide 530b may be spaced from the tower front end 231b by a second spacing G2. The third guide 530c may be spaced apart from the tower front end 231b by a third gap G3. The fourth guide 530d may be spaced apart from the tower front end 231b by a fourth gap G4.

Among the plurality of flow guides 500, the distances G1, G2, G3, and G4 between the flow guide 500 disposed on the lower side and the tower front end 231b may be wider. The first interval G1 may be wider than the second interval G2, the second interval G2 may be wider than the third interval G3, and the third interval G3 may be wider than the fourth interval G4.

The second tower leading end 231b may extend obliquely with respect to the up-down direction. The second tower front end 231b may extend to be inclined rearward as it goes upward. The second tower leading end 231b may be closer to the vertical axis Z at the center portion toward the upper side. The second tower front end 231b may have an inclination angle β 1 toward the rear with respect to the up-down direction.

The second tower rear end 231c may extend obliquely with respect to the up-down direction. The second tower rear end 231c may extend to be inclined forward as it goes upward. The second tower rear end 231c may be closer to the vertical axis Z at the center portion toward the upper side. The second tower rear end 231c may have an inclination angle β 2 toward the front with respect to the up-down direction.

The second discharge port 232 may extend obliquely with respect to the vertical direction. The second discharge port 232 may extend so as to be inclined forward as it goes upward. The second discharge port 232 may be located closer to the vertical axis Z in the center portion as it goes upward. The second discharge port 232 may extend parallel to the second tower rear end 231 c. The second discharge opening front end 232a and the second discharge opening rear end 232b may extend in parallel.

Since the tower front end 231b, the tower rear end 231c, and the discharge opening 232 are formed obliquely, and the intervals G1, G2, G3, G4 between the flow guide 500 and the tower front end 231b become narrower as they go to the upper side, the air blown by the fan 320 can be smoothly guided to the discharge opening 232 through the flow guide 500. Further, since the tower front end 231b, the tower rear end 231c, and the discharge port 232 are formed obliquely, and the distances G1, G2, G3, and G4 between the flow guide 500 and the tower front end 231b become narrower toward the upper side, the air discharged through the discharge port 232 can be distributed uniformly in the vertical direction.

More specifically, the pressure of the air blown by the fan 320 becomes higher as the air is closer to the fan 320, and becomes lower as the air is farther from the fan 320. Thus, by forming the interval between the flow guide 500 disposed adjacent to the fan 320 and the tower front end 231b wider, it is possible to guide a larger flow rate of air to be diffused upward and prevent the air discharged through the discharge port 232 from being concentrated to the lower portion. Further, by making the interval between the flow guide 500 distant from the fan 320 and the tower leading end 231b narrower, the air whose flow speed is reduced in the process of flowing upward is guided to the discharge port 232 by the flow guide 500 without being peeled off.

Hereinafter, a structure of the flow guide 600 in the blower 1' according to another embodiment of the present invention will be described with reference to fig. 10. Fig. 10 is a longitudinal sectional view of a blower 1' of another embodiment.

In the blower 1' of the other embodiment, the heater 240 is disposed inside the upper casings 221, 231. The heaters 240 may be disposed inside the first and second towers 220 and 230, respectively. The first heater 241 may be disposed inside the first tower 220, and the second heater (not shown) may be disposed inside the second tower 230. The configuration and arrangement of the heater 240 will be described by taking the first heater 241 as an example, but the description of the first heater 241 is similarly applied to the second heater (not shown).

A flow guide 600 is disposed inside the blower 1'. The flow guide 600 may be arranged in plural numbers in a vertically spaced manner. The flow guide 600 may include a first guide 620a, a second guide 620b, a third guide 620c, and a fourth guide 620d, and the shape and structure of the flow guide 600 may be the same as those of the flow guide 500 of the above-described embodiment.

The heater 240 may include: a first radiating pipe 243 extending in an up-down direction; a second heat pipe 244 extending in the up-down direction and spaced apart from the first heat pipe 243; a corner portion 245 for connecting the first and second radiating pipes 243 and 244; a holder 247 for fixing the first and second radiating pipes 243 and 244; and a plurality of heat dissipation fins 248, wherein the first heat dissipation pipe 243 and the second heat dissipation pipe 244 pass through the plurality of heat dissipation fins 248.

The first radiating pipe 243, the second radiating pipe 244 and the corner portion 245 may be an integral pipe and may be fixed by the holder 247.

The plurality of heat dissipation fins 248 may extend in the front-rear direction. The plurality of heat dissipation fins 248 may be spaced above and below each other. A heating flow path 246 may be formed at the plurality of heat radiating fins 248, and air passes through the heating flow path 246. The heating flow path 246 may be understood as an air flow passage extending in the front-rear direction between a plurality of heat radiating fins 248.

Each of the plurality of flow guides 600 may extend from the tower rear end 221c toward the tower front end 221b in the front-rear direction. The air passing through the heating flow path 246 is guided by the flow guide 600 and can be discharged to the blowing space S via the discharge port 222.

The flow guide 600 may be disposed in parallel with a flow direction of air passing through the heating flow path 246. The guide leading ends 621a, 621b, 621c, 621d of the flow guide 600 may face the heating flow path 246. The flow guide 600 may extend in a streamlined manner in parallel with the flow direction of the air passing through the heating flow path 246 from the guide front ends 621a, 621b, 621c, 621d to the guide rear ends 622a, 622b, 622c, 622 d. The guide leading ends 621a, 621b, 621c, 621d of the flow guide 600 may be spaced apart from the rear of the heat radiating fin 248.

The air blown by the fan 320 and flowing into the tower housings 221 and 231 flows upward. The air flowing upward passes through the heating flow path 246 formed between the plurality of heat radiating fins 248 while flowing rearward toward the discharge ports 222, 232. The air passing through the heating flow path 246 is guided by the flow guide 600 and discharged to the air blowing space S through the discharge ports 222, 232. Accordingly, the air flowing into the towers 220 and 230 and flowing upward can be guided in the flow direction by the heater 240 and the flow guide 600, and can be smoothly discharged to the discharge ports 222 and 232.

Hereinafter, the structure and the operational effects of the flow guide 212 of the blower 1 ″ according to still another embodiment of the present invention will be described with reference to fig. 11 to 13. Fig. 11 is a longitudinal sectional view of a blower 1 ″ according to still another embodiment of the present invention, and fig. 12 and 13 are graphs showing the effect of the flow guide 212.

Referring to fig. 11, a third discharge port 210s opened in the vertical direction may be formed in the tower base top surface 211 of the tower base 210. In the third discharge port 210s, a flow guide 212 for guiding air may be arranged. The third discharge port 210s may be formed in a recessed portion of the tower base top surface 211.

The flow guide 212 may be disposed obliquely to the vertical direction. The guide upper end 212a of the flow guide 212 may be located further forward than the guide lower end 212 b. The flow guide 212 may be connected to the tower base 210.

The flow guide 212 may be arranged in plural at intervals in the front-rear direction. A plurality of third discharge ports 210s may be formed between the plurality of flow guides 212, respectively.

The flow guide 212 may be disposed between the first tower 220 and the second tower 230, and may be disposed at a lower side of the air supply space S. The air blown from the fan 320 is guided by the flow guide 212 and can be discharged to the air sending space S through the third discharge port 210S.

The structures of the third discharge opening 210s and the flow guide 212 according to the further embodiment of the present invention may also be applied to the blower 1 according to the one embodiment of the present invention and the blower 1' according to the other embodiment of the present invention. In this case, the flow guide 212 may be referred to as a guide vane 212.

The inclination of the flow guide 212 with respect to the up-down direction is defined as a flow guide angle C.

Fig. 12 shows the value of the change in flow velocity caused by the flow guide angle C measured at a position P50 cm in front of the tower upper end 221 a. The change in flow rate caused by the flow guide angle C was measured while changing the number of flow guides 212. It was confirmed that, when the number of the flow guides 212 is four or more, the flow velocity at the position P converges to zero when the flow guide angle C is less than 30 degrees. It can be confirmed that in the case where the number of the flow guides 212 is two, even if the flow guide angle C is reduced, an airflow toward the front is formed at the position P.

In fig. 13, the value of the gas flow on the upper side of the tower upper end 221a is measured. It is confirmed that in the case where the number of the flow guides 212 is two, four, six, respectively, the air flow is formed at the upper side of the tower upper end 221 a. In addition, when the number of the flow guides 212 is four or six, it is confirmed that the flow velocity is decreased when the flow guide angle C is increased.

As a result of combining the results of fig. 12 and 13, it was confirmed that, in the case where at least four flow guides 212 are arranged, the forward flow can be minimized and the upward airflow can be formed.

While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the specific embodiments described above, and it is apparent to those skilled in the art that various modifications may be made without departing from the gist of the present invention claimed in the claims, and such modified embodiments should not be separately understood from the technical idea or prospect of the present invention.