CN201531460U - Wind-guiding grid for centrifugal fan - Google Patents
Wind-guiding grid for centrifugal fan Download PDFInfo
- Publication number
- CN201531460U CN201531460U CN2009203140802U CN200920314080U CN201531460U CN 201531460 U CN201531460 U CN 201531460U CN 2009203140802 U CN2009203140802 U CN 2009203140802U CN 200920314080 U CN200920314080 U CN 200920314080U CN 201531460 U CN201531460 U CN 201531460U
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- China
- Prior art keywords
- wind
- guiding grid
- centrifugal blower
- centrifugal fan
- electric heating
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Abstract
The utility model discloses a wind-guiding grid for a centrifugal fan, solving the problem that the wind-guiding grid in the prior art can not be used for the centrifugal fan. The wind-guiding grid has simple structure and can be used for the centrifugal fan in which an electrothermic element is used for transferring the heat. The wind-guiding grid for the centrifugal fan comprises at least one wind-guiding plate, the wind-guiding grid is arranged at an outlet of the centrifugal fan, the electrothermic element is arranged in front of the outlet of the centrifugal fan, the plate surface of the wind-guiding plate tangentially faces to the electrothermic element. According to the utility model, the wind-guiding grid for the centrifugal fan can improve the heat transfer efficiency of the electrothermic device, prevent the local surface of the electrothermic element from overheating and prolong the service life of the electrothermic element, and is especially suitable for an electrothermic type household electrical appliance such as small-sized baking pan and the like.
Description
Technical field
The utility model relates to a kind of centrifugal blower, specifically relates to a kind of wind-guiding grid that are used for centrifugal blower.
Background technique
The existing blower fan that is used for heat exchanger, be to use axial fan mostly, because the heat exchange area of most of heat exchangers and area of contour are all bigger, realize coupling easily with axial fan, and for heat exchange is evenly carried out on all heat exchanger surfaces, each manufacturing firm has adopted various active measures, as Chinese patent publication number CN 1920413A, open day on 02 28th, 2007, name is called ' air discharge structure of axial fan air deflection cover for integral air conditioner ' the middle proposition: the invention of air discharge structure of axial fan air deflection cover for integral air conditioner, comprise and drive the fan electromotor that fan rotates, be arranged on outdoor heat converter the place ahead, be directed to the even air that the outside is introduced the axial fan air deflection cover on the outdoor heat converter, be formed with exhaust port on the side channel outer wall of axial fan air deflection cover, the heat exchange efficiency of outdoor heat converter is improved greatly.The wind scooper area of this fan is bigger, then can't divert from one use to another for centrifugal fan, especially as toasting the small household appliances of pot and so on, for the heat with electric heating element conducts in the container, be typically provided with Small Centrifugal Fan, its volume is little, and especially Chu Kou area is little, can't the big wind scooper of device volume.
The model utility content
The utility model overcomes the shortcoming of prior art, and a kind of centrifugal blower wind-guiding grid that electric heating element conducts heat that are used for are provided, and this wind-guiding grid are simple in structure, air-flow is evenly distributed, and heat transfer efficiency improves.
The purpose of this utility model is achieved by following technical proposals: a kind of wind-guiding grid that are used for centrifugal blower, comprise at least one wind deflector, the utility model is arranged on the wind-guiding grid in the outlet port of centrifugal blower, electric heating element is located at the outlet front of centrifugal blower, and the plate face of wind deflector is tangentially facing to electric heating element.
Described wind deflector can have some, constitute the wind-guiding grid, being claw type between each wind deflector of wind-guiding grid is provided with dispersedly, the air-flow of the bootable centrifugal blower outlet of wind-guiding grid disperses and flows to equably each position of electric heating element, for based on the heat transfer by convection mode electric heating appliance, the heat at each position of electric heating element is taken away, can be improved heat exchange efficiency; The heat at each position of electric heating element obtains the timely exchange of cold airflow and takes away, also help the surface temperature that reduces electric heating element, generally speaking, the surface temperature of electric heating element own is higher more than 100 ℃ than its ambient temperature, the electric heating element surface temperature is high more, then hot strength is low more, deforms easily, collapses, the phenomenon of short circuit; Surface temperature is too high also can be produced alloy microstructure and destroys, and the clinkering phenomenon takes place and stops the life-span; Because the exit flow of centrifugal blower is more concentrated, mainly brush often facing to a certain position of electric heating element, the too high phenomenon of surface temperature then takes place because throughput is less in other position of electric heating element for example position, corner easily, and the local air flow amount lacks and also lowered heat transfer efficiency simultaneously.Be provided with after the wind-guiding grid,, blow to each position of electric heating element equably, make heat exchange more even, more abundant, avoid the electric heating element local surfaces overheated with life-saving and improve heat transfer efficiency centrifugal fan exit flow reasonable diffluence.
As preferably, the quantity of wind deflector is two, and the neutral position that is fixed on the centrifugal blower outlet is set.
The wind deflector of described wind-guiding grid can be made as integral structure with the housing of blower fan, also can be to be provided with separately to assemble with Blower Housing then.
The beneficial effects of the utility model are:
1. raising heat transfer efficiency;
2. prevent that the electric heating element local surfaces is overheated, prolong electric heating element working life.
Description of drawings
Fig. 1 is that the utility model embodiment's wind-guiding grid are provided with schematic representation on centrifugal blower.
Embodiment
Below in conjunction with accompanying drawing and specific embodiments the utility model is further described.
Embodiment: in Fig. 1, a kind of centrifugal blower, comprise spiral case 1, impeller 2, motor 3, outlet port at spiral case, just the outlet port of centrifugal blower is provided with wind-guiding grid 4, the wind-guiding grid comprise two wind deflectors 40 that are provided with by the splayed shape structure, described splayed shape structure, being meant has 30 ° of the tangential direction of wind deflector inclined left in the wind-guiding grid, other has 30 ° of the tangential direction inclined right of a wind deflector, and the distance minimum is 5mm between two wind deflectors, wind deflector and spiral case 1 are integral structure, two wind deflectors are divided into three strands with the air-flow that blower fan exports, and blow to the left side of electric heating element respectively, in, the uniformity coefficient of air-flow is improved at right three positions significantly; Electric heating element is installed in the outlet front of centrifugal blower, is a square tube shape passage that is connected with the centrifugal blower outlet around the electric heating element.
In order to make heat exchange more abundant, the skeleton of placing electric heating element is made as pyramidal structure, during installation the tower top is faced toward the outlet of centrifugal blower, then brushing of cold airflow can both be directly faced at each position of electric heating element, because when directly brushed by cold airflow, the temperature difference of electric heating element surface temperature and gas flow temperature is bigger, so heat exchange efficiency is also corresponding higher.
The utility model is used for the wind-guiding grid of centrifugal blower, can improve the electric heater heat transfer efficiency, prevents that the electric heating element local surfaces is overheated, prolongs electric heating element working life.Be particularly useful for electroheating type household electrical appliances as small-sized baking pot and so on.
Claims (7)
1. wind-guiding grid that are used for centrifugal blower comprise some wind deflectors, it is characterized in that the wind-guiding grid are arranged on the outlet port of centrifugal blower, and electric heating element is located at the outlet front of centrifugal blower, and the plate face of wind deflector is tangentially facing to electric heating element.
2. the wind-guiding grid that are used for centrifugal blower according to claim 1 is characterized in that, are claw type between each wind deflector of described wind-guiding grid and are provided with dispersedly.
3. the wind-guiding grid that are used for centrifugal blower according to claim 1 and 2 is characterized in that the quantity of described wind deflector is two, and the neutral position that is fixed on the centrifugal blower outlet is set.
4. the wind-guiding grid that are used for centrifugal blower according to claim 3 is characterized in that, 30 ° of settings of tangential direction inclined left of a wind deflector are arranged in the described wind-guiding grid, and other has 30 ° of settings of tangential direction inclined right of a wind deflector.
5. the wind-guiding grid that are used for centrifugal blower according to claim 1 and 2 is characterized in that, described electric heating element be arranged on one with square tube shape passage that centrifugal blower outlet is connected in.
6. the wind-guiding grid that are used for centrifugal blower according to claim 1 and 2 is characterized in that the spiral case of wind-guiding grid and centrifugal blower is an integral structure.
7. the wind-guiding grid that are used for centrifugal blower according to claim 1 and 2 is characterized in that, the skeleton of placing electric heating element is a pyramidal structure, and the tower top is facing to the outlet of centrifugal blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203140802U CN201531460U (en) | 2009-11-05 | 2009-11-05 | Wind-guiding grid for centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203140802U CN201531460U (en) | 2009-11-05 | 2009-11-05 | Wind-guiding grid for centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201531460U true CN201531460U (en) | 2010-07-21 |
Family
ID=42526864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203140802U Expired - Fee Related CN201531460U (en) | 2009-11-05 | 2009-11-05 | Wind-guiding grid for centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201531460U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922458A (en) * | 2010-10-01 | 2010-12-22 | 中国船舶重工集团公司第七一二研究所 | Centrifugal fan for cooling medium and large motors |
| CN103908166A (en) * | 2014-03-19 | 2014-07-09 | 浙江武义万家隆塑业有限公司 | Air fryer |
| CN104005997A (en) * | 2014-05-13 | 2014-08-27 | 珠海格力电器股份有限公司 | Volute, centrifugal fan and air conditioner |
| CN114607644A (en) * | 2022-04-01 | 2022-06-10 | 官军燕 | Heat radiation unit for electric/electronic device |
-
2009
- 2009-11-05 CN CN2009203140802U patent/CN201531460U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922458A (en) * | 2010-10-01 | 2010-12-22 | 中国船舶重工集团公司第七一二研究所 | Centrifugal fan for cooling medium and large motors |
| CN101922458B (en) * | 2010-10-01 | 2013-04-24 | 中国船舶重工集团公司第七一二研究所 | Centrifugal fan for cooling medium and large motors |
| CN103908166A (en) * | 2014-03-19 | 2014-07-09 | 浙江武义万家隆塑业有限公司 | Air fryer |
| CN103908166B (en) * | 2014-03-19 | 2016-08-17 | 浙江武义万家隆塑业有限公司 | Air fryer |
| CN104005997A (en) * | 2014-05-13 | 2014-08-27 | 珠海格力电器股份有限公司 | Volute, centrifugal fan and air conditioner |
| CN104005997B (en) * | 2014-05-13 | 2016-06-08 | 珠海格力电器股份有限公司 | Spiral case, centrifugal blower and air-conditioner |
| CN114607644A (en) * | 2022-04-01 | 2022-06-10 | 官军燕 | Heat radiation unit for electric/electronic device |
| CN114607644B (en) * | 2022-04-01 | 2023-11-03 | 石家庄东方热电热力工程有限公司 | Heat radiation unit for electric device |
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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: 20100721 Termination date: 20131105 |