CN201193617Y - Opposite expanding wind-collecting type external rotor air conditioning fan - Google Patents
Opposite expanding wind-collecting type external rotor air conditioning fan Download PDFInfo
- Publication number
- CN201193617Y CN201193617Y CNU2007201530104U CN200720153010U CN201193617Y CN 201193617 Y CN201193617 Y CN 201193617Y CN U2007201530104 U CNU2007201530104 U CN U2007201530104U CN 200720153010 U CN200720153010 U CN 200720153010U CN 201193617 Y CN201193617 Y CN 201193617Y
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- China
- Prior art keywords
- fan
- external rotor
- impeller
- air conditioning
- rotor air
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- Expired - Fee Related
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Abstract
The utility model relates to a contra-aperture expanding wind collecting type outer rotor air conditioning fan which can improve the efficiency and reduce the operation noise. The air conditioning fan is characterized in that impeller motor parts essentially consist of an impeller and an outer rotor motor; a fan shell consists of a volute, a volute tongue and a wind collection ring; the outer rotor air conditioning fan consists of the impeller motor parts and the fan shell. To reduce the vortex loss of a fan inlet, the shape of the wind collecting ring is modified as a part of an internal ring surface; a fanoutlet is expanded downward, which enlarges the section of the outlet; the gap between the impeller of the outer rotor air conditioning fan and the volute tongue is modified; the adoption of the structure of contra-aperture expanding wind collection, the efficiency of the fan is improved to 75 percent from 60 percent of the traditional products and the A-weighted sound level of the best efficiency point of the fan is smaller than 16dB (A).
Description
Affiliated technical field
The utility model relates to a kind of can the hot and cold medium of central air conditioner main machine manufacturing the change its air quality, and deliver to the equipment in places such as workshop, office, market---counterpart expansion collection wind type external rotor air-conditioning draught fan.
Background technique
The external rotor air-conditioning draught fan at China's air conditioner industry by supporting use, because the blower fan volume is restricted, the import and export area of blower fan is little, blower fan is imported and exported wind speed and is strengthened, and dynamic pressure raises, to fan static pressure is descended, it is big that noise becomes, in motor rated current using scope, static pressure only has 0.5～0.7 with the ratio of total head, than A noise level all greater than 17dB (A).Thereby the equal efficient of external rotor air-conditioning draught fan is not high at present, and according to the GB1236-2000 standard testing, its peak efficiency is 55～60%.
At present used above-mentioned efficient still be general at 55～60% blower fan in the central air-conditioner, and the electric energy of annual air-conditioning consumption is a large amount of, and because fan efficiency is hanged down the increase that has caused energy consumption, the increasing that brings fan noise simultaneously.
Summary of the invention
In order to overcome existing external rotor air-conditioning draught fan inefficiency, power consumption is big, the deficiency that fan noise is big.The utility model provides a kind of " counterpart expansion collection wind type external rotor air-conditioning draught fan ".This blower fan is formed the impeller motor parts by impeller and external rotor electric machine; Spiral case, snail tongue are formed flow blower casing with collection solar or lunar halo; Impeller motor parts and flow blower casing are formed the external rotor air-conditioning draught fan.Spiral case is the housing of a logarithmic spiral shape, and it has side plate and spiral case plate to combine, and advancing and go out all of air must be passed through spiral case.Two collection solar or lunar halo are arranged on the side plate of spiral case both sides, and collection solar or lunar halo is interior toroidal surface some; Blower fan adopts the design of " expansion counterpart " structural type.Air is to enter impeller from collection solar or lunar halo, by impeller, air is sent the spiral case outlet; Impeller and external rotor electric machine directly connect, and motor rotates the impeller rotation makes air obtain kinetic energy and pressure energy.This fan efficiency reaches more than 70%, than A sound level less than 16dB (A).
The scheme that solves the problems of the technologies described above is: counterpart expansion collection wind type external rotor air-conditioning draught fan is formed the impeller motor parts by impeller and external rotor electric machine; Spiral case, snail tongue are formed flow blower casing with collection solar or lunar halo; Impeller motor parts and flow blower casing are formed the external rotor air-conditioning draught fan.The shape that will collect solar or lunar halo for the loss of minimizing blower fan import vortex flow changes an interior toroidal surface part into; Change the gap of external rotor air-conditioning draught fan impeller and snail tongue; In order to reduce the outlet wind speed effectively, under the blower fan outlet situation that upwards expansion is restricted, expansion has enlarged the outlet downwards.Make the outlet wind speed decreased of blower fan, compare traditional outer rotor blower fan and descended 44.5%, thereby dynamic pressure has descended more than 50%.Dynamic pressure makes partial pressure be converted into the lifting of static pressure after descending, and makes static pressure and total head ratio (Pst/P) bring up to 0.88 from 0.5～0.7 of general external rotor air-conditioning draught fan.
The beneficial effects of the utility model are: by above change, make that the efficient of blower fan has improved 15%, the dynamic pressure of blower fan descends static pressure and total head ratio (Pst/P) rising.Significantly reduce energy consumption, improved the conveying effect of air dielectric simultaneously, reduced the noise of blower fan.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the half sectional view of overlooking of Fig. 1.
Fig. 3 is the flowing state figure of air among Fig. 1.
Fig. 4 is the flowing state figure of air among Fig. 2.
1 impeller among the figure, 2 spiral cases, 3 collection solar or lunar halo (intake grill), 4 snail tongues, 5 external rotor electric machines
Embodiment
In Fig. 1, impeller (1) intake grill faces with collection solar or lunar halo (3), and by the rotation of external rotor electric machine (5) rotation impeller, air enters impeller (1) by the collection solar or lunar halo (3) after expanding; The air flow chamber (being runner) that exists between the impeller (1) of rotation and spiral case (2) and the snail tongue (4) makes air obtain the pressure energy, thereby reaches the purpose of carrying air.
Blower fan air entry port when work has been selected the counterpart size by expansion, and air is improved in the situation of import, big import cross section can make the import wind speed reduce, make eddy current loss minimizing in the air flow channel, reduced the noise of blower fan simultaneously, realize improving the purpose of fan efficiency.
Claims (3)
1. a counterpart expansion collection wind type external rotor air-conditioning draught fan is characterized in that: be made up of impeller, collection solar or lunar halo, spiral case, snail tongue, external rotor electric machine; Impeller and external rotor electric machine are formed the impeller motor parts; Spiral case, snail tongue are assembled into the flow blower casing parts with collection solar or lunar halo; Impeller motor parts and flow blower casing parts are formed the external rotor air-conditioning draught fan.
2. press claims 1 described counterpart expansion collection wind type external rotor air-conditioning draught fan, it is characterized in that: two collection solar or lunar halo are arranged on the side plate of spiral case both sides, and collection solar or lunar halo is interior toroidal surface some.
3. press claims 1 or 2 described counterpart expansion collection wind type external rotor air-conditioning draught fans, it is characterized in that: blower fan outlet expansion downwards, the cross section of expanding export.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201530104U CN201193617Y (en) | 2007-06-11 | 2007-06-11 | Opposite expanding wind-collecting type external rotor air conditioning fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201530104U CN201193617Y (en) | 2007-06-11 | 2007-06-11 | Opposite expanding wind-collecting type external rotor air conditioning fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201193617Y true CN201193617Y (en) | 2009-02-11 |
Family
ID=40393153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201530104U Expired - Fee Related CN201193617Y (en) | 2007-06-11 | 2007-06-11 | Opposite expanding wind-collecting type external rotor air conditioning fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201193617Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287402A (en) * | 2011-09-16 | 2011-12-21 | 海尔集团公司 | Draught fan of range hood and range hood |
| CN108591125A (en) * | 2018-04-25 | 2018-09-28 | 浙江蓝炬星电器有限公司 | A kind of blower housing and its installation method |
-
2007
- 2007-06-11 CN CNU2007201530104U patent/CN201193617Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287402A (en) * | 2011-09-16 | 2011-12-21 | 海尔集团公司 | Draught fan of range hood and range hood |
| CN102287402B (en) * | 2011-09-16 | 2015-08-19 | 海尔集团公司 | Range hood fan and kitchen ventilator |
| CN108591125A (en) * | 2018-04-25 | 2018-09-28 | 浙江蓝炬星电器有限公司 | A kind of blower housing and its installation method |
| CN108591125B (en) * | 2018-04-25 | 2020-06-26 | 浙江蓝炬星电器有限公司 | Fan shell and mounting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20120611 |