CN209908804U - Centrifugal fan - Google Patents
Centrifugal fan Download PDFInfo
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- CN209908804U CN209908804U CN201920451189.4U CN201920451189U CN209908804U CN 209908804 U CN209908804 U CN 209908804U CN 201920451189 U CN201920451189 U CN 201920451189U CN 209908804 U CN209908804 U CN 209908804U
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- impeller
- centrifugal fan
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Abstract
The utility model discloses a centrifugal fan, including impeller, kuppe and motor, the impeller includes back rim plate and preceding rim plate, and back rim plate center is equipped with the mounting hole that is used for installing the motor, and preceding rim plate center is equipped with the air intake, installs a plurality of fan blades between back rim plate and the preceding rim plate, forms the wind channel between two adjacent fan blades, forms the air outlet at the outward flange in wind channel, and the kuppe is installed on the rim plate of back, its characterized in that: the air guide sleeve comprises an outer cover body and an inner cylinder body, an arc-shaped air guide surface is arranged on the surface of the outer cover body, the top of the outer cover body is connected with the top of the inner cylinder body, and the inner cylinder body is sleeved outside the motor. The flow guide cover occupies small volume in the impeller, the area distribution of a flow passage in the impeller is improved, the arc-shaped flow guide surface enables gas to smoothly flow in the flow passage, and the pneumatic performance of the impeller is improved; the motor part is exposed outside the air guide sleeve, so that the heat dissipation effect is good; eliminate among the prior art gaseous swirl district that forms in heat dissipation through-hole department, and then reduced pneumatic noise.
Description
The technical field is as follows:
the utility model relates to a centrifugal fan.
Background art:
the existing centrifugal fan comprises an impeller, a flow guide cover and a motor, wherein the impeller comprises a rear wheel disc, a front wheel disc and a plurality of blades, a mounting hole for mounting the motor is formed in the center of the rear wheel disc, an air inlet is formed in the center of the front wheel disc, the plurality of blades are mounted between the rear wheel disc and the front wheel disc, an air channel is formed between every two adjacent blades, an air outlet is formed in the outer edge of the air channel, the flow guide cover is mounted on the rear wheel disc and covers the motor, and a heat dissipation through hole is formed in. The centrifugal fan with the structure has the advantages that the volume of the air guide sleeve is too large, the volume of the air channel in the impeller is reduced, and a vortex area is easily generated beside the heat dissipation through hole in the impeller, so that the fluency of the air in the air channel is influenced.
The utility model has the following contents:
the utility model aims at providing a centrifugal fan can solve because of the gaseous smoothness nature's in the kuppe influences the impeller wind channel problem.
The purpose of the utility model is realized by the following technical scheme.
The utility model aims at providing a centrifugal fan, including impeller, kuppe and motor, the impeller includes back rim plate and preceding rim plate, and back rim plate center is equipped with the mounting hole that is used for installing the motor, and preceding rim plate center is equipped with the air intake, installs a plurality of fan blades between back rim plate and the preceding rim plate, forms the wind channel between two adjacent fan blades, forms the air outlet at the outward flange in wind channel, and the kuppe is installed on the rim plate of back, its characterized in that: the air guide sleeve comprises an outer cover body and an inner cylinder body, an arc-shaped air guide surface is arranged on the surface of the outer cover body, the top of the outer cover body is connected with the top of the inner cylinder body, and the inner cylinder body is sleeved outside the motor.
The inner surface of the front wheel disc is provided with an arc-shaped surface, and the curvature directions of the arc-shaped surface and the arc-shaped flow guide surface are the same.
The inner side wall of the inner cylinder body protrudes with a plurality of positioning clamp columns which are propped against the outer side surface of the motor.
The air guide sleeve further comprises an outer cylinder body, the outer cylinder body is arranged outside the inner cylinder body, the top of the outer cylinder body is connected with the middle of the outer cover body, and the outer cylinder body abuts against the rear wheel disc.
The outer barrel is provided with a plurality of mounting screw holes, the rear wheel disc is provided with a plurality of fixing holes at the periphery of the mounting holes, the fixing holes correspond to the mounting screw holes, mounting screws are arranged in the fixing holes and the mounting screw holes, and the flow guide cover is fixed on the rear wheel disc through the mounting screws.
And reinforcing ribs are arranged among the outer cylinder body, the inner cylinder body and the outer cover body.
The inner side of the rear wheel disc is concavely provided with a mounting groove in the opposite direction of the front wheel disc, the mounting groove is positioned in the middle of the rear wheel disc, the mounting hole and the fixing hole are positioned in the mounting groove, and the motor is mounted in the mounting groove.
The motor comprises a motor body and a motor controller, wherein the motor body is arranged in the impeller, and the motor controller is positioned outside the impeller.
Compared with the prior art, the utility model, following effect has:
1) centrifugal fan, including impeller, kuppe and motor, the impeller includes back rim plate, preceding rim plate and a plurality of fan blade, and the kuppe is installed on the rim plate of back, its characterized in that: the air guide sleeve comprises an outer cover body and an inner cylinder body, an arc-shaped air guide surface is arranged on the surface of the outer cover body, the top of the outer cover body is connected with the top of the inner cylinder body, and the inner cylinder body is sleeved outside the motor; the flow guide cover occupies small volume in the impeller, the area distribution of a flow passage in the impeller is improved, the arc-shaped flow guide surface enables gas to smoothly flow in the flow passage, and the pneumatic performance of the impeller is improved; the motor part is exposed outside the air guide sleeve, so that the heat dissipation effect is good; eliminate among the prior art gaseous swirl district that forms in heat dissipation through-hole department, and then reduced pneumatic noise.
2) Other advantages are detailed in the detailed description of the embodiments.
Description of the drawings:
fig. 1 is a schematic structural diagram of a centrifugal fan provided in an embodiment of the present invention;
FIG. 2 is an exploded view of a centrifugal fan;
FIG. 3 is a cross-sectional view of a centrifugal fan;
FIG. 4 is an enlarged view at A of FIG. 3;
FIG. 5 is a schematic structural view of a wind deflector in the centrifugal fan;
FIG. 6 is a schematic view of another angle configuration of the pod;
FIG. 7 is a cross-sectional view of the pod.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.
As shown in fig. 1 to 7, the embodiment provides a centrifugal fan, including impeller 1, kuppe 2 and motor 3, impeller 1 includes back rim plate 11 and preceding rim plate 12, back rim plate 11 center is equipped with mounting hole 111 that is used for installing motor 3, preceding rim plate 12 center is equipped with air intake 121, install a plurality of fan blades 13 between back rim plate 11 and the preceding rim plate 12, form wind channel 14 between two adjacent fan blades 13, form air outlet 141 at the outward flange of wind channel 14, kuppe 2 installs on back rim plate 11, its characterized in that: the air guide sleeve 2 comprises an outer cover body 22 and an inner cylinder body 21, an arc-shaped air guide surface 221 is arranged on the surface of the outer cover body 22, the top of the outer cover body 22 is connected with the top of the inner cylinder body 21, and the inner cylinder body 21 is sleeved outside the motor 3.
In the centrifugal fan of the embodiment, the flow guide cover 2 occupies a small space inside the impeller 1, so that the area distribution of the flow channel inside the impeller is improved, gas can smoothly flow in the air duct 14, and the pneumatic performance of the impeller is improved; the motor 3 is partially exposed outside the air guide sleeve 2, so that the heat dissipation effect is good; the aerodynamic noise is reduced.
The inner surface of the front wheel disc 12 is provided with an arc surface 122, and the curvature directions of the arc surface 122 and the arc guide surface 221 are the same. The flow passage inside the impeller 1 is made smoother.
Above-mentioned the protrusion of interior barrel 21 inside wall has a plurality of locator card posts 211, and locator card post 211 supports on motor 3 lateral surface, simple to operate, combines firmly.
The air guide sleeve 2 further comprises an outer cylinder 23, the outer cylinder 23 is arranged outside the inner cylinder 21, the top of the outer cylinder 23 is connected with the middle of the outer cover body 22, and the outer cylinder 23 abuts against the rear wheel disc 11. The air guide sleeve 2 is simple in structure, convenient to install and low in production cost.
The outer cylinder 23 is provided with a plurality of mounting screw holes 231, the rear wheel disc 11 is provided with a plurality of fixing holes 113 at the periphery of the mounting hole 111, the fixing holes 113 are arranged corresponding to the mounting screw holes 231, mounting screws are arranged in the fixing holes 113 and the mounting screw holes 231, and the air guide sleeve 2 is fixed on the rear wheel disc 11 through the mounting screws, so that the mounting is simple and convenient.
Reinforcing ribs 24 are provided between the outer cylinder 23, the inner cylinder 21 and the outer cover 22. The ribs 24 reinforce the strength of the pod 2.
The inner side of the rear wheel disc 11 is concavely provided with a mounting groove 114 in the opposite direction of the front wheel disc 12, the mounting groove is positioned in the middle of the rear wheel disc 11, the mounting hole 111 and the fixing hole 113 are positioned in the mounting groove 114, and the motor is mounted in the mounting groove 114. The installation groove 114 reduces the installation height of the motor 3 and the air guide sleeve 2, and further ensures that the gas inside the impeller 1 flows smoothly.
The motor 3 comprises a motor body 31 and a motor controller 32, the motor body 31 is installed in the impeller 1, and the motor controller 32 is located outside the impeller 1. The structure is reasonable.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (8)
1. The utility model provides a centrifugal fan, including impeller (1), kuppe (2) and motor (3), impeller (1) is including back rim plate (11) and preceding rim plate (12), back rim plate (11) center is equipped with mounting hole (111) that are used for installing motor (3), preceding rim plate (12) center is equipped with air intake (121), install a plurality of fan blades (13) between back rim plate (11) and preceding rim plate (12), form wind channel (14) between two adjacent fan blades (13), form air outlet (141) at the outward flange in wind channel (14), kuppe (2) are installed on back rim plate (11), its characterized in that: the air guide sleeve (2) comprises an outer cover body (22) and an inner cylinder body (21), an arc-shaped air guide surface (221) is arranged on the surface of the outer cover body (22), the top of the outer cover body (22) is connected with the top of the inner cylinder body (21), and the inner cylinder body (21) is sleeved outside the motor (3).
2. The centrifugal fan according to claim 1, wherein: the inner surface of the front wheel disc (12) is provided with an arc-shaped surface (122), and the curvature directions of the arc-shaped surface (122) and the arc-shaped flow guide surface (221) are the same.
3. A centrifugal fan according to claim 2, wherein: a plurality of positioning clamp columns (211) are protruded on the inner side wall of the inner cylinder body (21), and the positioning clamp columns (211) are abutted to the outer side face of the motor (3).
4. A centrifugal fan according to claim 1, 2 or 3, wherein: the air guide sleeve (2) further comprises an outer cylinder body (23), the outer cylinder body (23) is arranged outside the inner cylinder body (21), the top of the outer cylinder body (23) is connected with the middle of the outer cover body (22), and the outer cylinder body (23) abuts against the rear wheel disc (11).
5. The centrifugal fan according to claim 4, wherein: the outer cylinder body (23) is provided with a plurality of mounting screw holes (231), the rear wheel disc (11) is provided with a plurality of fixing holes (113) on the periphery of the mounting hole (111), the fixing holes (113) are arranged corresponding to the mounting screw holes (231), mounting screws are arranged in the fixing holes (113) and the mounting screw holes (231), and the air guide sleeve (2) is fixed on the rear wheel disc (11) through the mounting screws.
6. The centrifugal fan according to claim 5, wherein: and reinforcing ribs (24) are arranged among the outer cylinder body (23), the inner cylinder body (21) and the outer cover body (22).
7. The centrifugal fan according to claim 6, wherein: the inner side of the rear wheel disc (11) is concavely provided with a mounting groove (114) in the opposite direction of the front wheel disc (12), the mounting groove is positioned in the middle of the rear wheel disc (11), the mounting hole (111) and the fixing hole (113) are positioned in the mounting groove (114), and the motor is mounted in the mounting groove (114).
8. The centrifugal fan according to claim 7, wherein: the motor (3) comprises a motor body (31) and a motor controller (32), the motor body (31) is installed in the impeller (1), and the motor controller (32) is located outside the impeller (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920451189.4U CN209908804U (en) | 2019-04-04 | 2019-04-04 | Centrifugal fan |
| PCT/CN2019/104620 WO2020192023A1 (en) | 2019-03-28 | 2019-09-06 | Centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920451189.4U CN209908804U (en) | 2019-04-04 | 2019-04-04 | Centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209908804U true CN209908804U (en) | 2020-01-07 |
Family
ID=69034887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920451189.4U Active CN209908804U (en) | 2019-03-28 | 2019-04-04 | Centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209908804U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021169197A1 (en) * | 2020-02-29 | 2021-09-02 | 华为技术有限公司 | Centrifugal fan and air conditioning device |
-
2019
- 2019-04-04 CN CN201920451189.4U patent/CN209908804U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021169197A1 (en) * | 2020-02-29 | 2021-09-02 | 华为技术有限公司 | Centrifugal fan and air conditioning device |
| US20220099106A1 (en) * | 2020-02-29 | 2022-03-31 | Huawei Digital Power Technologies Co., Ltd. | Centrifugal fan and air conditioning apparatus |
| EP3961040A4 (en) * | 2020-02-29 | 2022-06-15 | Huawei Digital Power Technologies Co., Ltd. | Centrifugal fan and air conditioning device |
| US11898576B2 (en) * | 2020-02-29 | 2024-02-13 | Huawei Digital Power Technologies Co., Ltd. | Centrifugal fan and air conditioning apparatus |
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