CN202718888U - Roof fan - Google Patents
Roof fan Download PDFInfo
- Publication number
- CN202718888U CN202718888U CN 201220295170 CN201220295170U CN202718888U CN 202718888 U CN202718888 U CN 202718888U CN 201220295170 CN201220295170 CN 201220295170 CN 201220295170 U CN201220295170 U CN 201220295170U CN 202718888 U CN202718888 U CN 202718888U
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- Prior art keywords
- impeller
- casing
- electric machine
- motor
- machine casing
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- Expired - Fee Related
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Abstract
The utility model discloses a roof fan which comprises a motor casing, an impeller exhaust casing, an upright post, a current collector base, a motor and a centrifugal impeller, wherein the centrifugal impeller comprises a wheel board and a blade arranged on the front side of the wheel board; fins are arranged on the back side of the wheel board; heat radiating holes are formed in a position, which is positioned above the fins, of the impeller exhaust casing; and a ventilation rainproof shutter is arranged on the motor casing. The roof fan disclosed by the utility model has the characteristics that the heat radiation of the fan motor can be effectively solved, the fan can run efficiently for a long time and the like.
Description
Technical field
The utility model relates to a kind of blower fan, and is especially relevant with a kind of roof ventilator for indoor air-changing.
Background technique
The roof ventilator of prior art is that 4 fins have been installed at the wheel plate back side, normal operation by impeller, the motor that is installed in top has partly been produced certain ventilation cooling action, but owing to substantially isolating with ambient air in the electric machine casing, the little cooling-down effect of amount of air circulation is very not obvious.In summer high temperature season, the temperature of roofing can reach more than 45 degree, the motor of blower fan and bearing are under the condition of high temperature for a long time works, the lubrication system of motor internal and the lubricating function of bearing lubrication system have been had a strong impact on, accelerated the aging of moving element, increase the workload of maintaining, caused loss to the user.
Summary of the invention
The purpose of this utility model provide a kind of rational in infrastructure, use reliable, can effectively solve the fan motor heat dissipation problem, can make the roof ventilator of the long-term high-efficiency operation of blower fan.
For achieving the above object, the utility model is achieved through the following technical solutions.Roof ventilator, comprise electric machine casing, impeller exhaust casing, column, slip ring base, motor and centrifugal impeller, electric machine casing, impeller exhaust casing and slip ring base three are neighbouring, and connect by column, motor is installed in the electric machine casing, and with the centrifugal impeller direct-connection transmission, centrifugal impeller is arranged in the impeller exhaust casing, centrifugal impeller comprises wheel plate and is installed in the blade in wheel plate front, at the wheel plate back side fin is installed, above the impeller exhaust casing is positioned at fin, locate to be provided with radiation hole, be provided with the ventilation rainproof blinds at electric machine casing.
Described roof ventilator, its ventilation rainproof blinds is provided with 1-60 roads altogether, and is evenly distributed on the outer surface of electric machine casing.
Described roof ventilator, its radiation hole are waist shaped hole, are provided with altogether 1-2 circles, and are evenly distributed on the impeller exhaust casing of fin top.
The utility model compared with prior art has the following advantages: owing to being provided with multiple tracks ventilation rainproof blinds at the electric machine casing outer surface, the heat radiation waist shaped hole that cooperates the back mounted fin of impeller wheel plate and fin top, make in the electric machine casing air directly and ambient air the circulation of air current flow has been arranged, efficiently solve the heat dissipation problem of fan motor, can make the long-term high-efficiency operation of roof ventilator.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the utility model roof ventilator.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the cooling principle schematic diagram of the utility model roof ventilator.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
As shown in Figure 1, roof ventilator, comprise electric machine casing 1, impeller exhaust casing 2, column 3, slip ring base 4, motor 5 and centrifugal impeller 6, electric machine casing 1, impeller exhaust casing 2 is neighbouring with slip ring base 4 threes, and by column 3 connections, motor 5 is installed in the electric machine casing 1, and with centrifugal impeller 6 direct-connection transmissions, centrifugal impeller 6 is arranged in the impeller exhaust casing 2, centrifugal impeller 6 comprises wheel plate 7 and is installed in the blade 8 in wheel plate 7 fronts, at wheel plate 7 back sides fin 9 is installed, and locates to be provided with radiation hole 10 above impeller exhaust casing 2 is positioned at fin 9, be provided with ventilation rainproof blinds 11 at electric machine casing 1, ventilation rainproof blinds 11 is provided with 30 roads altogether, and is evenly distributed on the outer surface of electric machine casing 1, and radiation hole 10 is waist shaped hole, be provided with altogether 2 circles, and be evenly distributed on the impeller exhaust casing 2 of fin 9 tops.
The working principle of the utility model roof ventilator can be described as follows in conjunction with Fig. 2 and Fig. 3:
When centrifugal impeller 6 running, because the fin 9 that is installed in around centrifugal impeller 6 wheel plates 7 back sides also rotates simultaneously, so form negative pressure at centrifugal impeller 6 back sides, the formation of this negative pressure is by radiation hole 10, pass the ventilation rainproof blinds 11 on electric machine casing 1 outer surface, directly with outdoor air intake in electric machine casing 1, and along with the rotation of centrifugal impeller 6, hot air in outdoor air and the electric machine casing 1 is expelled to impeller exhaust casing 2 through radiation hole 10, discharge outdoor thereupon, the formation air-flow of motor 5 of flowing through, thus motor 5 is cooled off fully, guaranteed for a long time high-efficiency operation of the utility model roof ventilator.
Claims (3)
1. roof ventilator, comprise electric machine casing (1), impeller exhaust casing (2), column (3), slip ring base (4), motor (5) and centrifugal impeller (6), electric machine casing (1), impeller exhaust casing (2) is neighbouring with slip ring base (4) three, and by column (3) connection, motor (5) is installed in the electric machine casing (1), and with centrifugal impeller (6) direct-connection transmission, centrifugal impeller (6) is arranged in the impeller exhaust casing (2), centrifugal impeller (6) comprises wheel plate (7) and is installed in the positive blade (8) of wheel plate (7), at wheel plate (7) back side fin (9) is installed, it is characterized in that: be positioned at place, fin (9) top at impeller exhaust casing (2) and be provided with radiation hole (10), be provided with ventilation rainproof blinds (11) at electric machine casing (1).
2. roof ventilator according to claim 1, it is characterized in that: ventilation rainproof blinds (11) is provided with 1-60 roads altogether, and is evenly distributed on the outer surface of electric machine casing (1).
3. roof ventilator according to claim 1 and 2, it is characterized in that: radiation hole (10) is waist shaped hole, is provided with altogether 1-2 circles, and is evenly distributed on the impeller exhaust casing (2) of fin (9) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220295170 CN202718888U (en) | 2012-06-21 | 2012-06-21 | Roof fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220295170 CN202718888U (en) | 2012-06-21 | 2012-06-21 | Roof fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202718888U true CN202718888U (en) | 2013-02-06 |
Family
ID=47620712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220295170 Expired - Fee Related CN202718888U (en) | 2012-06-21 | 2012-06-21 | Roof fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202718888U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402144A (en) * | 2014-09-08 | 2016-03-16 | 雷勃美国公司 | Electrical machine and method of assembling same |
| CN107839580A (en) * | 2016-09-21 | 2018-03-27 | 比亚迪股份有限公司 | Refrigerator car air curtain and refrigerator car |
-
2012
- 2012-06-21 CN CN 201220295170 patent/CN202718888U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402144A (en) * | 2014-09-08 | 2016-03-16 | 雷勃美国公司 | Electrical machine and method of assembling same |
| CN105402144B (en) * | 2014-09-08 | 2019-07-19 | 雷勃美国公司 | Motor and its assemble method |
| CN107839580A (en) * | 2016-09-21 | 2018-03-27 | 比亚迪股份有限公司 | Refrigerator car air curtain and refrigerator car |
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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 |
Granted publication date: 20130206 Termination date: 20150621 |
|
| EXPY | Termination of patent right or utility model |