CN203522440U - Backward-inclined centrifugal fan for electric motor - Google Patents
Backward-inclined centrifugal fan for electric motor Download PDFInfo
- Publication number
- CN203522440U CN203522440U CN201320621564.8U CN201320621564U CN203522440U CN 203522440 U CN203522440 U CN 203522440U CN 201320621564 U CN201320621564 U CN 201320621564U CN 203522440 U CN203522440 U CN 203522440U
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- fan
- shroud
- hub disk
- fan cover
- backward
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Abstract
The utility model belongs to the technical field of electric motors, and relates to a backward-inclined centrifugal fan for the electric motor. The backward-inclined centrifugal fan comprises a fan cover, a connection hole is formed in the center of the fan cover, a plurality of outer fans are evenly distributed on the end face of the rear portion of the fan cover in the circumferential direction, each outer fan comprises a front disc, a fan blade and a rear disc connecting the front disc and the fan blade, a balance block is fixedly arranged on the front disc, the front end of the rear disc is in a triangular shape, the straight line part of the upper end of the fan blade is fixedly connected to the upper edge of a triangle of the front portion of the rear disc, and the arc transition part of the lower end of the fan blade extends towards one side away from the rear disc. By means of technical improvement, the backward-inclined centrifugal fan is adopted, the requirement of the electric motor on air pressure and air volume can be met, the size of the fan further can be reduced, loss is reduced, noise is reduced, and an important method for improving efficiency of the electric motor is provided.
Description
Technical field
The utility model belongs to motor technology field, relates to a kind of motor fan.
Background technology
For motor, the selecting properly of fan and design relation are to a plurality of key factors such as the temperature rise of motor, efficiency.High-voltage three-phase asynchronous motor adopts radially centrifugal fan mostly, and fan dimension is large, and the mechanical loss of generation is large, and noise is high, is unfavorable for improving the efficiency of motor.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of motor hypsokinesis centrifugal fan simple in structure, ingenious, rational is provided, adopt the motor of this fan, its mechanical loss is little, noise is low, and can effectively reduce electric machine temperature rise and improve electric efficiency.
The technical scheme providing according to the utility model: a kind of motor hypsokinesis centrifugal fan, be characterised in that: comprise fan cover, described fan Tao center offers connecting hole, fan cover rear portion end face is along the circumferential direction uniform arranges some external fans, described in each, external fan includes shroud, fan leaf and connect the hub disk of described shroud and fan leaf, on described shroud, be fixedly installed balance weight, hub disk front end shape triangular in shape, fan leaf upper end straight line portion is fixedly connected on the anterior leg-of-mutton top of hub disk, fan leaf lower end arc transition part is to extending away from hub disk one side.
As further improvement of the utility model, described shroud is to the rear portion bending of fan cover, and the faying face of hub disk and described shroud is positioned at the outside of fan cover rear portion end face in the horizontal direction.
As further improvement of the utility model, described shroud bottom is fixedly connected on fan by packing ring and bolt and puts, and balance weight is connected on shroud and is located corresponding to rear, hub disk lower end by screw fastening.
Compared with prior art, advantage is the utility model: the utility model, by technological improvement, adopts BI centrifugal fan, can take into account the requirement of motor to blast, air quantity, the size that can dwindle again fan, reduces the wastage, noise decrease is a kind of important method that improves electric efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, comprise external fan 1, shroud 1-1, hub disk 1-2, fan leaf 1-3, bolt 2, packing ring 3, fan cover 4, balance weight 5, screw 6 etc.
As shown in Figure 1, the utility model is a kind of motor hypsokinesis centrifugal fan, comprise fan cover 4, the center of described fan cover 4 offers connecting hole, fan overlaps that 4 rear portion end faces are along the circumferential direction uniform arranges some external fans 1, described in each, external fan 1 includes shroud 1-1, fan leaf 1-3 and connect the hub disk 1-2 of described shroud 1-1 and fan leaf 1-3, on described shroud 1-1, be fixedly installed balance weight 5, hub disk 1-2 front end shape triangular in shape, fan leaf 1-3 upper end straight line portion is fixedly connected on the anterior leg-of-mutton top of hub disk 1-2, fan leaf 1-3 lower end arc transition part is to extending away from hub disk 1-2 mono-side, in order to realize higher mechanical efficiency, conventionally 4 rear portion bendings are overlapped to fan in shroud 1-1 top, and the faying face of hub disk 1-2 and described shroud 1-1 is positioned at the outside that fan overlaps 4 rear portion end faces in the horizontal direction, for convenience of manufacturing quickly fan, external fan 1 adopts welding procedure manufacture conventionally, , by shroud 1-1, hub disk 1-2, fan leaf 1-3 firm welding, described shroud 1-1 bottom is fixedly connected on fan cover 4 by packing ring 3 and bolt 2, and balance weight 5 is fastenedly connected in shroud 1-1 is upper and is located corresponding to rear, hub disk 1-2 lower end by screw 6.
The utility model, by technological improvement, adopts BI centrifugal fan, can take into account the requirement of motor to blast, air quantity, and the size that can dwindle again fan, reduces the wastage, and noise decrease is a kind of important method that improves electric efficiency.The utility model adopts centrifugal hypsokinesis structure can effectively improve fan mechanical performance, and improves electric efficiency.
Described in the utility modelly by theory, calculate the required blast of motor, air quantity, by practical application, show that this fan can be operated in pressure point of maximum efficiency, fan loss has reduced, and has improved the efficiency of motor, is the preferred option of high efficient, high pressure motor.
Claims (2)
1. a motor hypsokinesis centrifugal fan, it is characterized in that: comprise fan cover (4), the center of described fan cover (4) offers connecting hole, fan cover (4) rear portion end face is the uniform some external fans (1) that arrange along the circumferential direction, external fan described in each (1) includes shroud (1-1), fan leaf (1-3) and connect the hub disk (1-2) of described shroud (1-1) and fan leaf (1-3), on described shroud (1-1), be fixedly installed balance weight (5), hub disk (1-2) front end shape triangular in shape, fan leaf (1-3) upper end straight line portion is fixedly connected on the anterior leg-of-mutton top of hub disk (1-2), fan leaf (1-3) lower end arc transition part is to extending away from hub disk (1-2) side,
Described shroud (1-1) is to the bending of fan cover (4) rear portion, and the faying face of hub disk (1-2) and described shroud (1-1) is positioned at the outside of fan cover (4) rear portion end face in the horizontal direction.
2. motor as claimed in claim 1 hypsokinesis centrifugal fan, it is characterized in that: it is upper that described shroud (1-1) bottom is fixedly connected on fan cover (4) by packing ring (3) and bolt (2), balance weight (5) is fastenedly connected in shroud (1-1) is upper and is located corresponding to hub disk (1-2) rear, lower end by screw (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320621564.8U CN203522440U (en) | 2013-10-09 | 2013-10-09 | Backward-inclined centrifugal fan for electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320621564.8U CN203522440U (en) | 2013-10-09 | 2013-10-09 | Backward-inclined centrifugal fan for electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203522440U true CN203522440U (en) | 2014-04-02 |
Family
ID=50381314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320621564.8U Expired - Fee Related CN203522440U (en) | 2013-10-09 | 2013-10-09 | Backward-inclined centrifugal fan for electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203522440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516132A (en) * | 2013-10-09 | 2014-01-15 | 中达电机股份有限公司 | Backward-inclined centrifugal fan for electric motor |
-
2013
- 2013-10-09 CN CN201320621564.8U patent/CN203522440U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516132A (en) * | 2013-10-09 | 2014-01-15 | 中达电机股份有限公司 | Backward-inclined centrifugal fan for electric motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20181009 |