CN220319852U

CN220319852U - Booster fan and vehicle

Info

Publication number: CN220319852U
Application number: CN202321970836.5U
Authority: CN
Inventors: 巩赟
Original assignee: Beijing CHJ Automobile Technology Co Ltd
Current assignee: Beijing CHJ Automobile Technology Co Ltd
Priority date: 2023-07-25
Filing date: 2023-07-25
Publication date: 2024-01-09
Anticipated expiration: 2033-07-25

Abstract

The utility model discloses a booster fan and a vehicle, wherein the booster fan comprises a shell, a first fan blade, a second fan blade, a first driving device and a second driving device, the shell is provided with an air inlet and an air outlet which are opposite along a first direction, the first fan blade and the second fan blade are rotatably arranged in the shell, the first fan blade and the second fan blade are arranged at intervals along the first direction, the rotation direction of the first fan blade is opposite to that of the second fan blade, the first driving device and the second driving device are arranged in the shell, and the first driving device and the second driving device are respectively connected with the first fan blade and the second fan blade in a transmission way. The booster fan provided by the utility model has the advantages of high efficiency, small size and small occupied space in a vehicle while ensuring the boosting requirement.

Description

Booster fan and vehicle

Technical Field

The utility model relates to the technical field of vehicle parts, in particular to a booster fan and a vehicle.

Background

The booster fans adopted by the existing air conditioner air supply system in the vehicle are centrifugal booster fan schemes, the basic booster principle is that static pressure is improved by the aid of the coriolis force generated in the rotation process of centrifugal impellers, the booster requirements of the booster fan schemes are strongly dependent on the size of the centrifugal fans, and the centrifugal fans are characterized by axial air inlet and radial air outlet in principle, so that the self pressure loss is severe, and the overall efficiency of the fans is low. In addition, the centrifugal fan has still seriously restricted its convenience when arranging in the car to the demand of size and form of admitting air, gives off air, generally needs to occupy great car interior space, and then sacrifices the arrangement space of interior storing, refrigerator etc. and has restricted the product power of car.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the embodiment of the utility model provides the booster fan, which has the advantages of high efficiency, small size and small occupied space in a vehicle while ensuring the boosting requirement.

The embodiment of the utility model also provides a vehicle.

The booster fan comprises a shell, a first fan blade, a second fan blade, a first driving device and a second driving device, wherein the shell is provided with an air inlet and an air outlet which are opposite along a first direction; the first fan blades and the second fan blades are rotatably arranged in the shell, the first fan blades and the second fan blades are arranged at intervals along the first direction, and the rotation direction of the first fan blades is opposite to the rotation direction of the second fan blades; the first driving device and the second driving device are both arranged on the shell, and the first driving device and the second driving device are respectively connected with the first fan blade and the second fan blade in a transmission way.

According to the booster fan provided by the embodiment of the utility model, the air inlet and the air outlet are oppositely arranged along the first direction, so that the flowing direction of the air in the shell is not changed, and the pressure loss of the air is small. Meanwhile, the first fan blades and the second fan blades are arranged at intervals along the first direction, and the first driving device and the second driving device respectively drive the first fan blades and the second fan blades to rotate reversely, so that the first fan blades and the second fan blades can offset rotating speed components of air flow generated by each other in the circumferential direction, the air flow flows along the first direction as much as possible, the air pressure loss is further reduced, the supercharging requirement is ensured, and meanwhile, the size of the shell is smaller compared with that of a booster fan in the related art, and the occupied space in a vehicle is smaller.

In some embodiments, the number of blades in the first blade is different from the number of blades in the second blade.

In some embodiments, the first blade includes a first shaft portion and a plurality of first blades, the plurality of first blades being arranged at intervals along a circumferential direction of the first shaft portion, a root portion of each of the first blades being connected to the first shaft portion, a geometric angle of refraction at different radial positions of the first blades being gradually reduced from the root portion to the tip portion;

the second fan blade comprises a second shaft portion and a plurality of second blades, the second blades are arranged at intervals along the circumferential direction of the second shaft portion, the root of each second blade is connected with the second shaft portion, and geometric folding angles at different radial positions of the second blades are gradually reduced from the root to the top.

In some embodiments, the first fan blade further comprises a first shroud disposed coaxially with the first shaft portion, a top of each of the first blades being connected to the first shroud;

the second fan blade further comprises a second blade crown, the second blade crowns and the second shaft portion are coaxially arranged, and the top of each second blade is connected with the second blade crowns.

In some embodiments, the first shaft portion is adjacent the air inlet and the second shaft portion is adjacent the air outlet, wherein the geometric angle of refraction of the first vane at different radial positions is between 25 ° and 50 ° and the geometric angle of refraction of the second vane at different radial positions is between 10 ° and 55 °.

In some embodiments, the first blade has a mounting angle of 40 ° -85 °, a chord length of 10mm-30mm, and the second blade has a mounting angle of 30 ° -65 °, a chord length of 10mm-25mm.

In some embodiments, the housing comprises a first housing and a second housing, the first housing and the second housing are detachably connected, the first fan blade and the second fan blade are rotatably mounted in the first housing and the second housing, respectively, and the first driving device and the second driving device are mounted in the first housing and the second housing, respectively.

In some embodiments, the housing further comprises a first mounting portion coaxially mounted within the first housing, a second mounting portion coaxially mounted within the second housing, a plurality of first support plates each connecting the first mounting portion and the first housing and being spaced apart along a circumference of the first mounting portion, and a plurality of second support plates each connecting the second mounting portion and the second housing and being spaced apart along a circumference of the second mounting portion,

the first driving device comprises a first motor, the first motor is installed on the first installation portion and is in transmission connection with the first fan blade, the second driving device comprises a second motor, and the second motor is installed on the second installation portion and is in transmission connection with the second fan blade.

In some embodiments, the geometric air intake angle at different radial positions of each of the first support plate and the second support plate increases gradually from root to tip.

In some embodiments, the geometric air intake angle at different radial positions of each of the first support plate and the second support plate is 50 ° -70 °.

A vehicle according to an embodiment of the utility model comprises a booster fan as described in any of the embodiments above.

The technical advantages of the vehicle according to the embodiment of the present utility model are the same as those of the booster fan of the above embodiment, and will not be described here again.

Drawings

Fig. 1 is an exploded view of a booster fan according to an embodiment of the present utility model.

FIG. 2 is a schematic view of a first fan blade and a second fan blade in a booster fan according to an embodiment of the utility model.

Fig. 3 is a schematic view of the mounting angles and chord lengths of the first blade and the second blade in the booster fan according to the embodiment of the utility model.

Reference numerals:

1. a first fan blade; 11. a first shaft portion; 12. a first blade; 13. a first tip shroud; 2. a second fan blade; 21. a second shaft portion; 22. a second blade; 23. a second tip shroud; 3. a first housing; 4. a second housing; 5. a first mounting portion; 6. a second mounting portion; 7. a first support plate; 8. and a second support plate.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

A booster fan according to an embodiment of the present utility model is described below with reference to fig. 1 to 3.

The booster fan according to the embodiment of the utility model comprises a shell, a first fan blade 1, a second fan blade 2, a first driving device and a second driving device. The shell is provided with an air inlet and an air outlet which are opposite along a first direction. The first fan blade 1 and the second fan blade 2 are both rotatably arranged in the shell, the first fan blade 1 and the second fan blade 2 are arranged at intervals along the first direction, and the rotation direction of the first fan blade 1 is opposite to that of the second fan blade 2. The first driving device and the second driving device are both arranged on the shell, and are respectively connected with the first fan blade 1 and the second fan blade 2 in a transmission way.

According to the booster fan provided by the embodiment of the utility model, the air inlet and the air outlet are oppositely arranged along the first direction, so that the flowing direction of the air in the shell is not changed, and the pressure loss of the air is small. Meanwhile, the first fan blades 1 and the second fan blades 2 are arranged at intervals along the first direction, and the first driving device and the second driving device respectively drive the first fan blades 1 and the second fan blades 2 to rotate reversely, so that the first fan blades 1 and the second fan blades 2 can offset the rotating speed components of air flow generated by each other in the circumferential direction, the air flow flows along the first direction as much as possible, the air pressure loss is further reduced, the supercharging requirement is ensured, and meanwhile, the size of the shell is smaller than that of the shell of the supercharging fan in the related art, and the occupied space is smaller.

The housing is internally provided with an air passage extending in the first direction, and a wall surface of the air passage is a cylindrical surface. In this embodiment, the rotation speeds of the first fan blade 1 and the second fan blade 2 can be independently adjusted by the first driving device and the second driving device, so that the first fan blade 1 and the second fan blade 2 can achieve a rotation speed ratio with smaller gas pressure loss, and the booster fan has higher efficiency.

In some embodiments, the number of blades in the first blade 1 is different from the number of blades in the second blade 2. The design that the blade numbers of first flabellum 1 and second flabellum 2 are different effectively avoids first flabellum 1 and second flabellum 2 to take place resonance and produce great order noise when the rotational speed is the same, and the noise that booster fan wholly sent is littleer, and user satisfaction is higher.

As shown in fig. 1 and fig. 2, taking an example that the first fan blade 1 is adjacent to the air inlet relative to the second fan blade 2, the number of blades of the first fan blade 1 may be 9, and at this time, the number of blades of the second fan blade 2 is 7.

In some embodiments, as shown in fig. 1 and 2, the first fan blade 1 includes a first shaft portion 11 and a plurality of first blades 12. The plurality of first blades 12 are arranged at intervals in the circumferential direction of the first shaft portion 11, the root portion of each first blade 12 is connected to the first shaft portion 11, and the geometric folding angle at different radial positions of the first blades 12 is gradually reduced from the root portion to the tip portion. The second fan blade 2 includes a second shaft portion 21 and a plurality of second blades 22. The plurality of second blades 22 are arranged at intervals along the circumferential direction of the second shaft portion 21, the root of each second blade 22 is connected to the second shaft portion 21, and the geometric folding angles at different radial positions of the second blades 22 gradually decrease from the root to the tip.

The geometric folding angle of each radial position of the first blade 12 and the second blade 22 is not zero, namely, the first blade 12 and the second blade 22 are three-dimensional blades, and the design that the geometric folding angle of the first blade 1 and the second blade 2 from the root to the top is gradually reduced is combined, so that the first blade 1 and the second blade 2 have better supercharging effect, and the supercharging efficiency of the supercharging fan is higher.

Specifically, the first shaft portion 11 and the second shaft portion 21 are each disposed coaxially with the wind passage of the housing.

In some embodiments, the first fan blade 1 further comprises a first shroud 13, the first shroud 13 being arranged coaxially with the first shaft portion 11, the top of each first blade 12 being connected to the first shroud 13. The second fan blade 2 further comprises a second shroud 23, the second shroud 23 being arranged coaxially with the second shaft portion 21, the top of each second blade 22 being connected to the second shroud 23.

The first shroud 13 and the second shroud 23 have the function of blocking leakage of the top clearance of the first blade 12 and the second blade 22, so that aerodynamic loss and aerodynamic noise caused by the leakage of the top clearance can be avoided, the efficiency of the booster fan is higher, and the user using satisfaction is higher.

Specifically, the first shroud 13 and the second shroud 23 have a sleeve-like structure, the plurality of first blades 12 are hidden in an annular cavity formed between the first shroud 13 and the first shaft portion 11, and the plurality of second blades 22 are hidden in an annular cavity formed between the second shroud 23 and the second shaft portion 21.

In some embodiments, the first shaft portion 11 is adjacent the air intake and the second shaft portion 21 is adjacent the air outlet, wherein the geometric angle of refraction of the different radial positions of the first blades 12 is 25 ° -50 °, and the geometric angle of refraction of the different radial positions of the second blades 22 is 10 ° -55 °.

That is, the maximum geometrical angle of refraction of the root of the first blade 12 is 50 °, the minimum geometrical angle of refraction of the top is 25 °, the maximum geometrical angle of refraction of the root of the second blade 22 is 55 °, and the minimum geometrical angle of refraction of the top is 10 °, at this time, the cooperation of the first blade 1 and the second blade 2 can better reduce the pressure loss, so as to further reduce the supercharging efficiency of the booster fan.

In some embodiments, the first blade 12 has a mounting angle of 40-85, a chord length of 10-30 mm, the second blade 22 has a mounting angle of 30-65, and a chord length of 10-25 mm.

At this time, by adjusting the parameters of the first blade 12 and the second blade 22, the air volume and the air pressure range of the booster fan can be adjusted, so as to meet the use requirements of different scenes.

The chord length is the distance between the two farthest points of the blade, and the installation angle is the included angle between the chord length of the blade and the rotation plane. As shown in FIG. 3, X is the axis of the fan blade, Y is the rotation plane of the fan blade, A is the straight line where the chord length is located, beta is the mounting angle, and L is the chord length. In some embodiments, as shown in fig. 1, the housing includes a first housing 3 and a second housing 4, the first housing 3 and the second housing 4 are detachably connected, the first fan blade 1 and the second fan blade 2 are rotatably mounted in the first housing 3 and the second housing 4, respectively, and the first driving device and the second driving device are mounted in the first housing 3 and the second housing 4, respectively.

Therefore, the first fan blade 1 and the first driving device can be arranged on the first shell 3 in advance, the second fan blade 2 and the second driving device are arranged on the second shell 4, and then the first shell 3 and the second shell 4 are connected, namely, the assembly of the booster fan is realized, and the assembly is simple and convenient.

Specifically, as shown in fig. 1, the first housing 3 and the second housing 4 are sleeve-like structures with the same size, and the first housing 3 and the second housing 4 are coaxially connected.

In some embodiments, the housing further comprises a first mounting portion 5, a second mounting portion 6, a plurality of first support plates 7, and a plurality of second support plates 8. The first installation department 5 coaxial arrangement is in first casing 3, and a plurality of first backup pads 7 all connect first installation department 5 and first casing 3 and along the circumference interval arrangement of first installation department 5, and the coaxial arrangement of second installation department 6 is in second casing 4, and a plurality of second backup pads 8 all connect second installation department 6 and second casing 4 and along the circumference interval arrangement of second installation department 6.

The first driving device comprises a first motor, the first motor is arranged on the first installation part 5 and is in transmission connection with the first fan blade 1, the second driving device comprises a second motor, and the second motor is arranged on the second installation part 6 and is in transmission connection with the second fan blade 2. Namely, the first fan blade 1 and the second fan blade 2 realize driving and rotating speed adjustment through a first motor and a second motor respectively.

Specifically, the motor shaft of the first motor is coaxially connected to the first shaft portion 11 of the first fan blade 1, and the motor shaft of the second motor is coaxially connected to the second shaft portion 21 of the second fan blade 2. The first support plate 7 and the second support plate 8 are both located between the first fan blade 1 and the second fan blade 2.

In some embodiments, the geometric air intake angle at different radial positions of each of the first support plate 7 and the second support plate 8 increases gradually from root to tip.

This setting makes the corresponding direction of gas when passing through first backup pad 7 and second backup pad 8, can adapt to the air-out angle of first flabellum 1 export at radial difference, and then reduces the probability that first backup pad 7 and second backup pad 8 surface produced the vortex because of the fluid separation, also reduces air friction noise.

Specifically, the geometric angles of refraction at different radial positions of the first support plate 7 and the second support plate 8 are zero, so that the geometric inlet angle and the geometric outlet angle of the two are the same. In this embodiment, the geometric air inlet angle of the first support plate 7 and the second support plate 8 is an air guiding angle, that is, the direction-changing angle of the air when the air passes through the first support plate 7 and the second support plate 8.

In some embodiments, the geometric air intake angle at different radial positions of each of the first support plate 7 and the second support plate 8 is 50 ° -70 °. I.e. the geometric inlet angle of the first support plate 7 and the second support plate 8 at the root position is at least 50 deg., and the geometric inlet angle at the top position is at most 70 deg., this arrangement enables a better reduction of pressure losses and a reduction of air friction noise.

A vehicle according to an embodiment of the utility model comprises a booster fan according to any of the embodiments described above.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims

1. A booster fan, comprising:

the shell is provided with an air inlet and an air outlet which are opposite along a first direction;

the first fan blades and the second fan blades are rotatably arranged in the shell, the first fan blades and the second fan blades are arranged at intervals along the first direction, and the rotation direction of the first fan blades is opposite to that of the second fan blades; and

the first driving device and the second driving device are respectively installed on the shell, and the first driving device and the second driving device are respectively connected with the first fan blade and the second fan blade in a transmission mode.

2. The booster fan of claim 1 wherein the number of blades in the first fan blade is different than the number of blades in the second fan blade.

3. The booster fan of claim 1 wherein the first fan blade includes a first shaft portion and a plurality of first blades, the plurality of first blades being circumferentially spaced along the first shaft portion, a root portion of each of the first blades being connected to the first shaft portion, a geometric angle of refraction at different radial positions of the first blades being progressively reduced from root portion to tip portion;

4. The booster fan of claim 3 wherein the first fan blade further comprises a first shroud disposed coaxially with the first shaft portion, a top of each of the first blades being connected to the first shroud;

5. A booster fan as claimed in claim 3 wherein the first shaft portion is adjacent the air inlet and the second shaft portion is adjacent the air outlet, and wherein the geometric angle of refraction of the first vane at different radial positions is between 25 ° and 50 ° and the geometric angle of refraction of the second vane at different radial positions is between 10 ° and 55 °.

6. The booster fan of claim 5 wherein the first blade has a mounting angle of 40 ° to 85 ° and a chord length of 10mm to 30mm, and the second blade has a mounting angle of 30 ° to 65 ° and a chord length of 10mm to 25mm.

7. The booster fan of any one of claims 1-6 wherein the housing includes a first housing and a second housing, the first housing and the second housing being removably coupled, the first fan blade and the second fan blade being rotatably mounted within the first housing and the second housing, respectively, the first drive device and the second drive device being mounted to the first housing and the second housing, respectively.

8. The booster fan of claim 7 wherein the housing further comprises a first mounting portion coaxially mounted within the first housing, a second mounting portion coaxially mounted within the second housing, a plurality of first support plates each connecting the first mounting portion and the first housing and being spaced apart along a circumference of the first mounting portion, and a plurality of second support plates each connecting the second mounting portion and the second housing and being spaced apart along a circumference of the second mounting portion,

9. The booster fan of claim 8 wherein the geometric inlet angle at different radial positions of each of the first support plate and the second support plate increases gradually from root to tip.

10. The booster fan of claim 9 wherein the geometric inlet angle at different radial positions of each of the first support plate and the second support plate is 50 ° -70 °.

11. A vehicle comprising a booster fan as claimed in any one of claims 1 to 10.