阅读说明：本技术 导风结构、风扇 (Air guide structure and fan ) 是由 麦焕 张晓泉 陈宇强 陈中兆 刘阳清 于 2020-12-31 设计创作，主要内容包括：本发明涉及风扇技术领域,具体涉及一种导风结构、风扇。一种导风结构包括：沿气流流出方向,设置在出风格栅下方的框体,框体内形成有环形流道；若干导流片,呈辐射状设置在环形流道内,导流片靠近环形流道中心处的一端上设置有拨杆,外力驱动拨杆带动导流片以导流片4的辐射方向为转动中心发生转动；其中,若干导流片在转动预设角度下具有封闭环形流道的第一状态以及打开环形流道的第二状态。本发明中在出风格栅的下方设置导流片,导流片在环形风道内通过外力拨动拨杆可发生转动,当风扇不工作的时候,导流片转动,若干个导流片拼接,实现对环形风道的封闭,进而防止了灰尘通过出风格栅的出风口处进入到风道内,影响风机等的使用。(The invention relates to the technical field of fans, in particular to an air guide structure and a fan. An air guide structure includes: the frame body is arranged below the air outlet grille along the air flow outflow direction, and an annular flow channel is formed in the frame body; the deflector plates are radially arranged in the annular flow channel, one ends of the deflector plates, which are close to the center of the annular flow channel, are provided with deflector rods, and the deflector rods are driven by external force to drive the deflector plates to rotate by taking the radiation direction of the deflector plates 4 as a rotation center; the flow deflectors rotate for a preset angle and have a first state of closing the annular flow channel and a second state of opening the annular flow channel. According to the invention, the guide vanes are arranged below the air outlet grille and can rotate by poking the deflector rod through external force in the annular air duct, when the fan does not work, the guide vanes rotate, and the guide vanes are spliced to seal the annular air duct, so that dust is prevented from entering the air duct through the air outlet of the air outlet grille and affecting the use of the fan and the like.)

1. An air guide structure, comprising:

the frame body is arranged below the air outlet grille (1) along the air flow outflow direction, and an annular flow channel is formed in the frame body;

the guide vanes (4) are radially arranged in the annular flow channel, and a deflector rod (43) is arranged at one end of each guide vane (4) close to the center of the annular flow channel;

the deflector rod (43) is driven by external force to drive the deflector (4) to rotate by taking the radiation direction of the deflector (4) as a rotation center;

the flow deflectors (4) rotate by a preset angle and have a first state of closing the annular flow channel and a second state of opening the annular flow channel.

2. The air guide structure according to claim 1, wherein the frame body comprises a first frame body (2) and a second frame body (3) which are butted with each other;

the first frame body (2) is provided with an annular first frame (21) and a first middle shaft (22) arranged in the center of the first frame (21);

the second frame body (3) is provided with an annular second frame (31) and a second middle shaft (32) arranged in the center of the second frame (31);

the annular flow passage is formed between the first frame (21) and the first middle shaft (22), and between the second frame (31) and the second middle shaft (32).

3. The air guiding structure as recited in claim 2, characterized in that the flow deflector (4) is constructed as a fan-ring structure, and a first rotating part (41) and a second rotating part (42) are respectively arranged on two opposite arcs of the flow deflector (4);

a plurality of first rotating grooves (221) are formed in the first middle shaft (22) along the circumferential direction of the first middle shaft, and the second rotating part (42) is rotatably arranged on the first rotating grooves (221);

the second frame (31) is provided with a plurality of second rotating grooves (311) along the circumferential direction, and the first rotating portion (41) is rotatably arranged on the second rotating grooves (311).

4. The air guide structure according to claim 3, wherein a plurality of lateral air outlets (312) are disposed on a circumferential surface of the second frame (31).

5. The air guide structure according to claim 4, wherein the first turning groove (221) is provided below the second turning groove (311) in the airflow outflow direction.

6. The air guiding structure as recited in claim 3, further comprising a driving assembly (5), wherein the deflector (4) is provided with the deflector rod (43), and the driving assembly (5) drives the deflector rod (43).

7. The air guiding structure as defined in claim 6, wherein the lever (43) comprises:

a connecting portion (431) provided on the second rotating portion (42);

and a toggle part (432) vertically arranged on the connecting part (431), wherein the drive component (5) drives the toggle part (432).

8. The air guiding structure as defined in claim 6, characterized in that the first central shaft (22) is constructed as a hollow structure, and the driving assembly (5) is arranged in the first central shaft (22).

9. Air guiding structure as defined in any one of claims 6-8, characterized in that said drive assembly (5) comprises:

the driving motor (51) is arranged in the first middle shaft (22), and a gear (52) is arranged on the driving motor (51);

the rotating disc (53) is arranged between the first middle shaft (22) and the second middle shaft (32), a plurality of shifting teeth (531) are arranged at intervals in the circumferential direction of the rotating disc (53), a shifting groove (535) is formed between every two adjacent shifting teeth, and the shifting part (432) is clamped in the shifting groove (535);

the dial (53) further comprises a toothed portion (532) meshing with the gear (52).

10. The air guiding structure according to claim 9, wherein a limiting plate (536) is disposed on a side of the toggle groove (535) close to the second frame (3), and the limiting plate (536) is configured to limit the toggle part (432) from disengaging from the toggle groove (535).

11. The air guide structure according to claim 9, wherein the driving assembly (5) further includes a connecting member (54) disposed between the driving motor (51) and the rotating disc (53), a rotating shaft (541) is disposed on the connecting member (54) in a protruding manner, and a first shaft hole (533) and a second shaft hole (322) for passing through the rotating shaft (541) are respectively disposed on the rotating disc (53) and the second central shaft (32).

12. The air guide structure according to claim 11, wherein a limiting block (542) is convexly disposed on an end surface of the connecting member (54) facing the rotary plate (53), and a limiting hole (534) cooperating with the limiting block (542) is disposed on the rotary plate (53) to limit a rotation angle of the rotary plate (53).

13. A fan, comprising:

the air guide structure according to any one of claims 1 to 12.

Technical Field

The invention relates to the technical field of fans, in particular to an air guide structure and a fan.

Background

The main structure of the air circulation fan comprises a driving motor, a turbine fan, a flow guide grid and a cylindrical shell. The air circulation fan can blow out the wind spirally along a certain direction, and the wind can form spiral columnar wind after being stirred by the fan blades. The air circulation fan blows air far away and has good directionality.

The guide grid of the existing air circulation fan is arranged at the axial air outlet, when the circulation fan is in a non-working state, external dust easily enters the air channel through the guide grid, and deposits on the impeller and the fan at the downstream of the air channel, so that the service life of the fan is influenced, and the generation of noise is easily caused.

Disclosure of Invention

Therefore, the invention aims to overcome the defect that dust is easy to enter an axial flow air port of a circulating fan in the prior art, and provides an air guide structure and a fan.

In order to solve the above problems, the present invention provides an air guide structure, including: the frame body is arranged below the air outlet grille along the air flow outflow direction, and an annular flow channel is formed in the frame body; the deflector plates are radially arranged in the annular flow channel, one ends of the deflector plates, which are close to the center of the annular flow channel, are provided with deflector rods, and external force drives the deflector rods to drive the deflector plates to rotate by taking the radiation direction of the deflector plates as a rotation center; the flow deflectors rotate for a preset angle and have a first state of closing the annular flow channel and a second state of opening the annular flow channel.

Optionally, the frame body comprises a first frame body and a second frame body which are mutually butted;

the first frame body is provided with an annular first frame and a first middle shaft arranged in the center of the first frame;

the second frame body is provided with an annular second frame and a second middle shaft arranged in the center of the second frame;

the annular flow passage is formed between the first frame and the first middle shaft and between the second frame and the second middle shaft.

Optionally, the guide vane is configured as a fan-ring structure, and a first rotating part and a second rotating part are respectively arranged on two opposite arc sides of the guide vane;

a plurality of first rotating grooves are formed in the first middle shaft along the circumferential direction of the first middle shaft, and the second rotating part is rotatably arranged on the first rotating grooves;

a plurality of second rotating grooves are formed in the second frame along the circumferential direction of the second frame, and the first rotating portion is rotatably arranged on the second rotating grooves.

Optionally, a plurality of lateral air outlets are arranged on the circumferential surface of the second frame.

Optionally, in the airflow outflow direction, the first rotating groove is disposed below the second rotating groove.

Optionally, the wind deflector further comprises a driving assembly, the deflector rod is arranged on the deflector, and the driving assembly drives the deflector rod.

Optionally, the stem comprises:

a connecting portion provided on the second rotating portion;

and the driving component drives the shifting part.

Optionally, the first bottom bracket is configured as a hollow structure, and the drive assembly is disposed within the first bottom bracket.

Optionally, the drive assembly comprises:

the driving motor is arranged in the first middle shaft, and a gear is arranged on the driving motor;

the rotating disc is arranged between the first middle shaft and the second middle shaft, a plurality of shifting teeth are arranged at intervals in the circumferential direction of the rotating disc, a shifting groove is formed between two adjacent shifting teeth, and the shifting part is clamped in the shifting groove;

the turntable also includes a toothed portion that meshes with the gear.

Optionally, a limiting plate is arranged on one side, close to the second frame body, of the toggle groove, and the limiting plate is used for limiting the toggle part to be separated from the toggle groove.

Optionally, the driving assembly further includes a connecting member disposed between the driving motor and the turntable, a rotating shaft is disposed on the connecting member in a protruding manner, and a first shaft hole and a second shaft hole for the rotating shaft to pass through are respectively disposed on the turntable and the second shaft.

Optionally, the connecting piece orientation the protrusion is provided with the stopper on the terminal surface of carousel, be provided with on the carousel with the spacing hole of stopper cooperation effect to the restriction the turned angle of carousel.

The present invention also provides a fan comprising: the air guide structure described in any one of the above.

The technical scheme of the invention has the following advantages:

1. the air guide structure of the invention comprises: the frame body is arranged below the air outlet grille along the air flow outflow direction, and an annular flow channel is formed in the frame body; the deflector plates are radially arranged in the annular flow channel, one ends of the deflector plates, which are close to the center of the annular flow channel, are provided with deflector rods, and external force drives the deflector rods to drive the deflector plates to rotate by taking the radiation direction of the deflector plates as a rotation center; the flow deflectors rotate for a preset angle and have a first state of closing the annular flow channel and a second state of opening the annular flow channel.

According to the invention, the guide vanes are arranged below the air outlet grille and can rotate by poking the deflector rod through external force in the annular air duct, when the fan does not work, the guide vanes rotate, and the guide vanes are spliced to seal the annular air duct, so that dust is prevented from entering the air duct through the air outlet of the air outlet grille and affecting the use of the fan and the like.

2. In the air guide structure, the circumferential surface of the second frame is provided with a plurality of lateral air outlets, and the arrangement of the lateral air outlets increases the air outlet angle of the fan.

3. In the air guide structure of the present invention, the first rotating groove is disposed below the second rotating groove in the airflow outflow direction. First rotation groove is less than the second and rotates the groove setting, leads to installing the water conservancy diversion piece on first rotation groove and second rotation groove towards the one end perk of second framework, when the water conservancy diversion piece is in the closure state, can be better with air current direction side direction air outlet, when the increase side direction air outlet air output, reduces because of the noise that air current and wind channel wall collision produced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is an exploded view of a wind guide structure in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a flow deflector in a first state according to embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a flow deflector in a second state according to embodiment 1 of the present invention;

fig. 4 is a schematic structural diagram of a first frame in embodiment 1 of the present invention;

fig. 5 is a schematic structural diagram of a second frame body in embodiment 1 of the present invention;

fig. 6 is a schematic structural view of a flow deflector in embodiment 1 of the present invention;

fig. 7 is a schematic view of a closed state of a guide vane in embodiment 1 of the present invention;

FIG. 8 is a schematic structural view of a turntable in embodiment 1 of the present invention;

fig. 9 is a schematic structural view of an air outlet grille in embodiment 1 of the present invention;

FIG. 10 is a schematic structural view of a connector in example 1 of the present invention;

fig. 11 is a schematic structural view of a drive motor in embodiment 1 of the present invention;

fig. 12 is a sectional view of an air guide structure according to embodiment 1 of the present invention.

Description of reference numerals:

1-air outlet grille;

2-a first frame; 21-a first frame; 22-a first medial axis; 221-a first rotating groove;

3-a second frame; 31-a second frame; 32-a second medial axis; 311-second rotation groove; 312-lateral air outlet; 321-an annular groove; 322-second shaft hole;

4-flow deflectors; 41-a first rotating part; 42-a second rotating part; 43-a driving lever; 431-a connecting part; 432-toggle part;

5-a drive assembly; 51-a drive motor; 52-gear; 53-a turntable; 531-poking teeth; 532-tooth portion; 533-first shaft hole; 534-limiting hole; 535-toggle groove; 536-a limiting plate; 54-a connector; 541-a rotating shaft; 542-a limiting block.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

As shown in fig. 1 to 12, in the air guiding structure provided in this embodiment, a frame is disposed below the air outlet grille 1 along an airflow outflow direction, and an annular flow channel is formed in the frame; the guide vanes 4 are radially arranged in the annular flow channel, one end of each guide vane 4, which is close to the center of the annular flow channel, is provided with a shift lever 43, and the shift lever 43 is driven by external force to drive the guide vanes 4 to rotate by taking the radial direction of the guide vanes 4 as a rotation center; the plurality of guide vanes 4 rotate by a preset angle to have a first state of closing the annular flow passage and a second state of opening the annular flow passage.

The air guide structure in this embodiment is used on the circulation fan, and the lower extreme air intake department of circulation fan sets up the fan, with the leading-in wind channel of external air current to flow out to the external world through the air-out grid in this embodiment. The frame body in the embodiment is used as a part of the air duct of the whole circulating fan, and an annular flow channel is formed in the frame body so as to facilitate the flow deflector to close the air duct.

In the air guide structure in this embodiment, the opening and closing of the air duct in the axial flow direction is realized in the axial flow direction of the circulation fan. Specifically, when the air duct in the axial flow direction needs to be opened, as shown in fig. 3, the guide vane 4 is driven by an external force to rotate by a certain angle, where the angle is an included angle between the vane surface of the guide vane and the fluid flow direction, when the included angle is not 90 degrees, the air duct is in an opened state, and when the included angle is 90 degrees, the guide vanes are butted together to close the annular flow passage.

The event sets up the water conservancy diversion piece in the below of air-out grid in this embodiment, and the water conservancy diversion piece is rotatable in annular wind channel, and when the fan inoperative, the water conservancy diversion piece rotates, and the concatenation of a plurality of water conservancy diversion piece realizes the closure to annular wind channel, and then has prevented that the dust from entering into the wind channel through the air outlet department of air-out grid in, influences the use of fan etc..

The frame body in this embodiment includes two parts, namely a first frame body 2 and a second frame body 3, which are butted with each other, as shown in fig. 4 and 5, which show specific structures of the first frame body 2 and the second frame body 3:

as shown in fig. 4, the first frame 2 has an annular first frame 21, an upper end of the first frame 21 is provided with a mounting groove, and the outlet grille is mounted in the mounting groove of the first frame 21. The first middle shaft 22 is arranged at the center of the first frame 21, a plurality of spokes are bridged between the circumferential surface of the first middle shaft 22 and the inner side surface of the first frame 21, the spokes in the embodiment are arranged at four positions and used as deformation, and other spokes can be used as well, so that the first middle shaft 22 can be supported and fixed.

As shown in fig. 5, the second housing 3 has an annular second frame 31, and an upper end portion of the second frame 31 is formed with a mounting hole to be fitted to a lower end surface of the first frame 21. A second middle shaft 32 is arranged in the center of the second frame 31; a plurality of spokes are bridged between the circumferential surface of the second middle axle 32 and the inner side surface of the second frame 31, the number of the spokes in the embodiment is four, and the spokes with other numbers can be used as a deformation, so that the second middle axle 32 can be supported and fixed.

Therefore, in this embodiment, an annular flow passage is formed between the inner side surface of the first frame 21 and the circumferential surface of the first central shaft 22, and between the inner side surface of the second frame 31 and the circumferential surface of the second central shaft 32, so that the airflow from the fan can pass through the annular flow passage.

Further, in the present embodiment, a plurality of lateral air outlets 312 are disposed on the circumferential surface of the second frame 31 to increase the air outlet angle of the fan.

As shown in fig. 6, a specific structure of the baffle 4 is shown, in this embodiment, the baffle 4 is configured as a fan-ring structure, a first rotating portion 41 and a second rotating portion 42 are respectively disposed on two opposite arcs of the baffle 4, and both the first rotating portion 41 and the second rotating portion 42 are of a rotating shaft structure. The sector ring structure in the embodiment is simple to process, and the sector ring structure can be spliced into a circular ring structure to better adapt to the annular flow channel, and the annular flow channel is blocked, so that the sealing performance of the annular flow channel is improved, and the dustproof effect is improved.

The guide vane 4 in this embodiment is installed on the first frame body 2 and the second frame body 3, specifically, as shown in fig. 4, a plurality of first rotating grooves 221 are formed on the first central shaft 22 along the circumferential direction thereof, the second rotating portion 42 is rotatably disposed on the first rotating grooves 221, the first rotating grooves 221 support the second rotating portion 42, and at the same time, the second rotating portion 42 can rotate in the first rotating grooves 221, so that the structure is simple, and the installation of the guide vane is convenient.

Similarly, as shown in fig. 5, a plurality of second rotating grooves 311 are formed in the second frame 31 along the circumferential direction thereof, and the first rotating portion 41 is rotatably provided in the second rotating grooves 311. The second rotating groove 311 can also support the first rotating part 41, and has a simple structure and convenient installation of the guide vane.

Further, in the present embodiment, the first rotation groove 221 is disposed below the second rotation groove 311 in the airflow outflow direction. First rotating groove 221 is less than the setting of second rotating groove, leads to installing the water conservancy diversion piece on first rotating groove 221 and the second rotating groove towards the one end perk of second framework 3, when water conservancy diversion piece 4 is in the closure state, can be better with air current direction side direction air outlet, when increasing side direction air outlet air output, reduces because of the noise that air current and wind channel wall collision produced.

In this embodiment, in order to facilitate driving of the baffle, the driving assembly 5 is further included, as shown in fig. 6, a shift lever 43 is disposed at a shaft end of the second rotating portion 42 away from the body of the baffle 4, the driving assembly 5 drives the shift lever 43, and the shift lever 43 is driven by the driving assembly 5 to further drive the baffle 4. The shift lever 43 in this embodiment includes: a connecting portion 431 provided on the second rotating portion 42, the connecting portion 431 having a strip plate structure integrally formed at an axial end of the second rotating portion 42; and a toggle part 432 vertically arranged on the connecting part 431, wherein the toggle part 432 is a common cylindrical rod-shaped structure, and the drive component 5 drives the toggle part 432.

The first middle shaft 22 in this embodiment is configured as a hollow structure, the driving assembly 5 is disposed in the first middle shaft 22, and the first middle shaft 22 is covered on the driving assembly 5, so as to provide a dust-proof effect for the driving assembly 5.

As shown in fig. 8, the driving assembly 5 includes: the driving motor 51 is arranged in the first middle shaft 22, a gear 52 is arranged on the driving motor 51, and the gear 52 is installed on a motor shaft of the driving motor 51 in an interference fit or key installation mode. The rotating disc 53 is arranged between the first middle shaft 22 and the second middle shaft 32, a plurality of shifting teeth 531 are machined on the circumferential direction of the rotating disc 53, intervals exist between two adjacent shifting teeth, a shifting groove 535 is formed in the interval space, the shifting part 432 is clamped in the shifting groove 535, and when the rotating disc 53 rotates, the shifting rod 43 clamped in the shifting groove 535 is driven to rotate. Furthermore, the middle position part of the turntable is processed into a half-moon-shaped notch, a tooth part 532 meshed with the gear 52 is processed on the inner side surface of the notch, the gear 52 is driven to rotate by the driving motor 51, the gear 52 drives the turntable 53 to rotate by the tooth part 532, and the turntable 53 drives the flow deflector 4 to rotate by the shifting teeth 531, so that the rotation angle of the flow deflector 4 is adjusted.

On the basis of the above embodiment, as a further limitation, a limiting plate 536 is disposed on a side of the dial slot 535 close to the second frame, the limiting plate 536 is connected between the two dial teeth 531, and when the dial portion 432 rotates in the dial slot 535, the limiting plate 536 can restrict the movement stroke of the dial portion 432 to limit the dial portion 432 to disengage from the dial slot 535.

As shown in fig. 10, the driving assembly 5 further includes a connecting member 54 disposed between the driving motor 51 and the rotating plate 53, the connecting member 54 is provided with a protruding rotating shaft 541, and the rotating plate 53 and the second middle shaft 32 are respectively provided with a first shaft hole 533 and a second shaft hole 322 for the rotating shaft 541 to penetrate through. First, the driving motor 51 is locked to the connecting member 54 by a screw, and a through hole for passing a motor shaft is formed in the connecting member 54. The second shaft hole 322 is a blind hole structure, the shaft end of the rotating shaft 541 is abutted against the blind hole, the upper end of the first middle shaft 22 is opened, and when the air outlet grille 1 is installed on the first frame body 2, the air outlet grille 1 is pressed on the driving motor, so that the connecting piece 54 is abutted against the second shaft hole 322 of the second middle shaft 32, and the fixing of the connecting piece 54 is realized. And a swivel plate 53 is rotatably mounted between the connecting member 54 and the upper end surface of the second bottom bracket 32.

As shown in fig. 8 and fig. 10, a limiting block 542 is convexly disposed on an end surface of the connecting member 54 facing the rotating disc 53, a limiting hole 534 cooperating with the limiting block 542 is disposed on the rotating disc 53, the limiting hole 534 is an arc hole, and when the connecting member 54 is mounted, the limiting block 542 is movably inserted into the limiting hole 534 and can move in the limiting hole 534. When the turntable 53 rotates a certain angle, the limiting block 543 thereon is blocked by the limiting hole 534 to limit the rotation angle of the turntable 53. Furthermore, the adjustment of the range of the rotation angle of the rotary disc 3 can be realized by setting the size of the arc hole.

Example 2

The present embodiment provides a fan, and in particular, a circulation fan, which includes the air guiding structure in the foregoing embodiments, and has all technical advantages thereof, which are not described herein again.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.