CN203130551U - Centrifugal fan - Google Patents
Centrifugal fan Download PDFInfo
- Publication number
- CN203130551U CN203130551U CN 201320075974 CN201320075974U CN203130551U CN 203130551 U CN203130551 U CN 203130551U CN 201320075974 CN201320075974 CN 201320075974 CN 201320075974 U CN201320075974 U CN 201320075974U CN 203130551 U CN203130551 U CN 203130551U
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- centrifugal fan
- brushless motor
- fan
- electric machine
- brushless electric
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Abstract
The utility model relates to a centrifugal fan. The centrifugal fan comprises a fan shell, a centrifugal impeller, a brushless motor and an air inlet. The centrifugal fan is characterized in that the centrifugal fan further comprises a fixing support for installing the brushless motor, the brushless motor is arranged on a wind-providing position at the outer side of the air inlet of the fan through bolts by the fixing support, and the brushless motor is arranged on the fixing support through screws. The installing mode of the brushless motor of the centrifugal fan is different from the installing mode of the drive motor of a traditional centrifugal fan, the brushless motor is arranged on the wind-providing position at the outer side of the air inlet of the fan, high-speed air flow flowing into the air inlet of the fan is made to carry out effective cooling and heat radiation on the brushless motor at the same time, the phenomenon of overheating or even burning down caused by overload or high-speed operation is avoided, and therefore temperature rise of the interior of the centrifugal fan is greatly reduced, the purpose that the service life of the centrifugal fan is prolonged is achieved, and working efficiency is improved. The centrifugal fan is wide in application, and particularly suitable for a small-and-middle sized centrifugal fan driven by the brushless motor, such as an atmosphere sampling device and a pneumatic extinguisher.
Description
Technical field
The utility model relates to a kind of centrifugal fan.
Background technique
The drive motor of present existing centrifugal fan mainly adopts two kinds of direct current or AC motor, is installed in the opposition side of air inlet.Brushless electric machine is because having that good mechanical property, speed governing are convenient, efficient is high and than advantages such as the direct current of equal-wattage or AC motor volume are littler, being used to more and more needs in the middle low power Electric actuator of speed governing.But, when brushless electric machine is used for centrifugal blower as drive motor, if also be installed in the opposition side of air inlet as usual manner, because himself radiating effect is limited, when long-play, can cause thermal accumlation, the internal temperature rise aggravation, and then the brushless electric machine working efficiency is reduced, particularly at full capacity, when running up state more so, this makes the superperformance of brushless electric machine can not give full play in this occasion.
Summary of the invention
The purpose of this utility model provides a kind of centrifugal fan, and the brushless electric machine that solve the to be used for centrifugal fan problem of temperature rise aggravation that is in operation is to remedy the deficiencies in the prior art.
The technical solution adopted in the utility model is to use brushless electric machine as the drive motor of centrifugal blower, and change its mounting point on centrifugal blower usually, namely by a fixed support brushless electric machine is arranged at the weather in the air inlet outside via bolt, strengthen the wind-cooling heat dissipating to brushless electric machine, thereby reduce its inner temperature rise greatly, effectively avoided reducing problem because of the overheated efficient that causes.
The utility model comprises flow blower casing, receded disk impeller, brushless electric machine, intake grill, it is characterized in that it also comprises the fixed support that brushless electric machine is installed, this fixed support is arranged at the weather in the air inlet outside with brushless electric machine via bolt, and brushless electric machine is installed on the fixed support by screw.The said fixing support makes the brushless electric machine axle be in the center of intake grill and is connected with centrifugal impeller is coaxial.
Described centrifugal fan is characterized in that said fixing contoured cradle profile is horn-like, and its surface distributed has the hollow out grid, so that air intake and prevent that foreign is inhaled into blower fan inside.
The utility model is different from the mounting point of conventional drive motor of centrifugal fan, but brushless electric machine is installed in the weather in the air inlet outside, make the high velocity air that flows into air inlet to cool off brushless electric machine simultaneously, thereby improved working efficiency greatly, and prolonged the life-span of centrifugal fan.
Description of drawings
Fig. 1, be plan view of the present utility model.
Fig. 2, be radial section figure of the present utility model.
Among the figure: 1, flow blower casing; 2, centrifugal impeller; 3, brushless electric machine; 4, fixed support; 5, intake grill; 6, screw; 7, bolt.
Embodiment
As shown in Figure 1, 2, the utility model comprises flow blower casing 1, receded disk impeller 2, brushless electric machine 3, intake grill 5, it is characterized in that it also comprises the fixed support 4 that brushless electric machine 3 is installed, this fixed support 4 is arranged at the weather in intake grill 5 outsides with brushless electric machine 3 via bolt 7, and brushless electric machine 3 is installed on the fixed support 4 by screw 6.
Above-mentioned brushless electric machine 3 go out axle head is installed in fixed support 4 by screw 6 upper end, fixed support 4 profiles are horn-like structure, its surface hollow-out is even three hole structures, namely form 120 ° three-jaw supporting structure each other, the bottom of each supporting claw is fixed on by bolt 7 on the outside at intake grill 5 edges of flow blower casing 1, and makes the axle of brushless electric machine 3 be in the center of intake grill 5 and be connected with centrifugal impeller 2 coaxial drive fits.
When brushless electric machine 3 drives the centrifugal blower operation, because it is positioned at the negative pressure field of the weather in intake grill 5 outsides, the feasible airflow passes brushless electric machine 3 that flows into air inlet 5, thereby the heat of its generation can be cooled off by high velocity air at any time, guarantee that the efficient of brushless electric machine does not reduce because temperature rise is too high.The fixed support 4 of three-jaw supporting structure can not produce the air-flow that enters intake grill 5 and stop, and guarantees that technically brushless electric machine 3 is connected with centrifugal impeller 2 and the reliable of flow blower casing 1.
The utility model has been abandoned the mounting type of drive motor of centrifugal fan routine, brushless electric machine is installed in the weather of air inlet, air-flow when making fan operation can carry out effective cooling heat dissipation to brushless electric machine, the phenomenon of having avoided the motor working efficiency that causes because internal temperature rise is too high to reduce thus.This kind structure not only can make the brushless electric machine long-play at full load condition and can be not overheated, and can allow brushless electric machine setting overload state within the specific limits, but overburdening can't take place or produce phenomenon overheated even that burn when running up, thereby can the performance that brushless electric machine is good be fully played at centrifugal blower.
The utility model is widely used, on the middle-size and small-size high-speed centrifugal fan device that is particularly suitable for needing to be driven by brushless electric machine, as atmospheric sampling device, Pneumatic extinguisher etc.
Claims (2)
1. centrifugal fan, comprise flow blower casing (1), receded disk impeller (2), brushless electric machine (3), intake grill (5), it is characterized in that it also comprises the fixed support (4) that brushless electric machine (3) is installed, this fixed support (4) is arranged at the weather in intake grill (5) outside with brushless electric machine (3) via bolt (7), and brushless electric machine (3) is installed on the fixed support (4) by screw (6).
2. centrifugal fan as claimed in claim 1 it is characterized in that said fixing support (4) appearance profile is horn-like, and its surface distributed has the hollow out grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320075974 CN203130551U (en) | 2013-02-18 | 2013-02-18 | Centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320075974 CN203130551U (en) | 2013-02-18 | 2013-02-18 | Centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130551U true CN203130551U (en) | 2013-08-14 |
Family
ID=48938532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320075974 Expired - Fee Related CN203130551U (en) | 2013-02-18 | 2013-02-18 | Centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130551U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033413A (en) * | 2014-06-11 | 2014-09-10 | 南方风机股份有限公司 | Centrifugal fan |
| CN104235955A (en) * | 2014-09-11 | 2014-12-24 | 美的集团武汉制冷设备有限公司 | Air conditioner indoor unit and air conditioner |
| CN105386990A (en) * | 2015-12-16 | 2016-03-09 | 万鹏昌 | Energy saving fan component |
| CN107243124A (en) * | 2017-07-27 | 2017-10-13 | 李东斌 | Portable efficient energy-saving electric wind-power spray and extinguishing method |
-
2013
- 2013-02-18 CN CN 201320075974 patent/CN203130551U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033413A (en) * | 2014-06-11 | 2014-09-10 | 南方风机股份有限公司 | Centrifugal fan |
| CN104033413B (en) * | 2014-06-11 | 2016-04-06 | 南方风机股份有限公司 | A kind of centrifugal blower |
| CN104235955A (en) * | 2014-09-11 | 2014-12-24 | 美的集团武汉制冷设备有限公司 | Air conditioner indoor unit and air conditioner |
| CN104235955B (en) * | 2014-09-11 | 2017-01-25 | 美的集团武汉制冷设备有限公司 | air conditioner indoor unit and air conditioner |
| CN105386990A (en) * | 2015-12-16 | 2016-03-09 | 万鹏昌 | Energy saving fan component |
| CN107243124A (en) * | 2017-07-27 | 2017-10-13 | 李东斌 | Portable efficient energy-saving electric wind-power spray and extinguishing method |
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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: 20130814 Termination date: 20190218 |