CN103727066B - Centrifugal fan - Google Patents
Centrifugal fan Download PDFInfo
- Publication number
- CN103727066B CN103727066B CN201210380969.7A CN201210380969A CN103727066B CN 103727066 B CN103727066 B CN 103727066B CN 201210380969 A CN201210380969 A CN 201210380969A CN 103727066 B CN103727066 B CN 103727066B
- Authority
- CN
- China
- Prior art keywords
- centrifugal fan
- air
- opening
- side wall
- air outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/424—Double entry casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of centrifugal fan, the impeller in the fan frame is placed in including a fan frame and one, the side of the fan frame is provided with an air outlet, the impeller-driven air-flow flows out from the air outlet, the fan frame is at the close air outlet formed with the opening for being available for the centrifugal fan inlet air, air outside the centrifugal fan enters inside the centrifugal fan along the opening, and is flowed out from the air outlet.
Description
Technical field
The present invention relates to a kind of centrifugal fan.
Background technology
Currently, heat caused by the heat-generating electronic elements such as developing rapidly with computer industry, micro-chip processor more comes
The more.For these heats are effectively distributed, existing method is the radiator that is sticked on the surface of heat-generating electronic elements, Ran Hou
One centrifugal fan is set on the radiator, forced heat radiation is carried out to the radiator using cooling air-flow caused by the centrifugal fan,
So as to which heat caused by heat-generating electronic elements be dispersed.
Industry is typically improved the air-out flow of centrifugal fan by increasing the speed of rotation of fan, so as to improve from
The heat dispersion of heart fan.So cause the noise of centrifugal fan larger, so that user does not feel well.
The content of the invention
In view of this, it is necessary to which providing one kind has larger air-out flow and the less centrifugal fan of noise.
A kind of centrifugal fan, including a fan frame and one are placed in impeller in the fan frame, and the side of the fan frame goes out provided with one
Air port, the impeller-driven air-flow flow out from the air outlet, the fan frame at the air outlet formed with being available for the centrifugal fan
The opening of inlet air, the air outside the centrifugal fan enters inside the centrifugal fan along the opening, and is flowed out from the air outlet.
The present invention close to the air outlet position of the centrifugal fan in the fan frame by setting opening, using air by high pressure
Place toward low pressure place flowing the characteristics of so that extraneous air along the opening enter the centrifugal fan inside, finally from
The air outlet flows out.In this way, need not improve rotation speed of the fan can add the air-out flow of the centrifugal fan, so as to not increase
The heat dispersion of the centrifugal fan is improved on the premise of noise.
Brief description of the drawings
Fig. 1 is the three-dimensional exploded view of the centrifugal fan of first embodiment of the invention.
Fig. 2 is the three-dimensional exploded view of the centrifugal fan of second embodiment of the invention.
Fig. 3 is the three-dimensional exploded view of the centrifugal fan of third embodiment of the invention.
Fig. 4 is the three-dimensional exploded view of the centrifugal fan of fourth embodiment of the invention.
Main element symbol description
Centrifugal fan | 100、100a、100b、100c |
Fan frame | 10 |
Base | 11 |
Bottom plate | 111 |
Side wall | 112 |
Top plate | 12 |
Air inlet | 13 |
Air outlet | 14 |
Projection | 15 |
Opening | 16、16a、16b、16c |
Tongue | 17 |
Impeller | 20 |
Flabellum | 21 |
Receiving space | 30 |
Following embodiment will combine above-mentioned accompanying drawing and further illustrate the present invention.
Embodiment
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is refer to, the centrifugal fan 100 of first embodiment of the invention, which includes a fan frame 10 and one, has some flabellums 21
Impeller 20, fan frame 10 is accommodated in receiving space 30 formed with a receiving space 30, impeller 20.In the present embodiment, leaf
Wheel 20 operates along clockwise direction when centrifugal fan 100 works.
Fan frame 10 has a base 11 and a top plate 12 on the base 11.Base 11 include a bottom plate 111 and
The side wall 112 upwardly extended by the periphery of bottom plate 111.Top plate 12 is connected to the top of side wall 112, and top plate 12 and bottom plate
111 be parallel to each other and face set.The centre of bottom plate 111 and top plate 12 to should the position of impeller 20 be respectively equipped with an air inlet
13.The side of side wall 112 is provided with an air outlet 14 vertical with air inlet 13.When centrifugal fan 100 works, the fan of impeller 20
After the certain driving air-flow of leaf 21 flows through the inner surface of side wall 112, finally flowed out by air outlet 14.The inner surface of the side wall 112 is in close
The side of air outlet 14 is provided with the tongue 17 that is protruded out into fan frame 10, and the tongue is increasing the air-flow entered in fan frame 10
Air pressure.The inner surface of side wall 112 protrudes outward to form a projection 15, projection 15 and side wall in the opposite side close to air outlet 14
112 are integrally formed.The outer surface of projection 15 and side wall 112 surrounds the opening 16 with ft connection, the opening 16 and tongue jointly
Portion 17 is oppositely arranged.Opening 16 tilts extension from the outer surface of side wall 112 along the direction that impeller 20 rotate, in this way, from centrifugation
The outside of fan 100 can not see its internal structure so that internal structure does not influence outward appearance, in addition, projection 15 can strengthen side
Intensity of the wall 112 at opening 16, avoid side wall 112 because of opening 16 cracky.
When the centrifugal fan 100 works, impeller 20 rotates in the counterclockwise direction, and certain driving air-flow enters at air inlet 13
Inside centrifugal fan 100, the inner surface of side wall 112 of the air-flow along the centrifugal fan 100 flows out from the air outlet 14.Into
Air velocity inside centrifugal fan 100 slowly accelerates, so that the air pressure in centrifugal fan 100 slowly reduces, is approaching
The air pressure of the position in air port 14 is less than outside atmospheric pressure.Because air is flowed from the high place of pressure toward the low place of pressure
It is dynamic, so that outside air enters the inside of centrifugal fan 100 along opening 16/16a, finally also flowed from air outlet 14
Go out.In this way, the air-out flow of centrifugal fan 100 is added, so as to improve centrifugation wind while need not lift rotation speed of the fan
The heat dispersion of fan 100;In addition, by opening up opening 16, locate also produce air flow outside opening 16, so can also align
Radiated in the part electronic component located outside opening 16;Secondly, opening 16 rotates from the outer surface of side wall 112 along impeller 20
Direction tilt extension, so from opening 16 enter air will be flowed out along impeller 20 by air outlet 14 so that from opening
16 air being inhaled into flow out without changing direction together with the air-flow inside centrifugal fan 100, can not only reduce and make an uproar
Sound, but also the cold air that can will be far from air outlet 14 imports, and is advantageous to improve radiating efficiency.
Referring to Fig. 2, in a second embodiment, projection 15 is not provided with centrifugal fan 100a side wall 112, and directly exist
Side wall 112 is provided with an opening 16a.The 16a that is open extends from the inner surface of side wall 112 to the direction away from air outlet 14.
Please refer to Fig. 3 and Fig. 4, its show the centrifugal fan 100b of the third and fourth embodiment of the invention and
100c.Centrifugal fan 100b and 100c structure are similar with the centrifugal fan 100a in second embodiment, and it is differed only in:Such as
Shown in Fig. 3, centrifugal fan 100b opening 16b is located on top plate 12, and close to air outlet 14 and side wall 112;As shown in figure 4,
Centrifugal fan 100c opening 16c is located on bottom plate 111, and close to air outlet 14 and side wall 112.
It should be understood that the concrete structure of the shape of the opening, quantity and the centrifugal fan does not limit, as long as it can rise
To the purpose of the air-out flow of increase centrifugal fan, will not be repeated here.
The technology contents and technical characterstic of the present invention are disclosed above, but those skilled in the art are still potentially based on this hair
Bright teaching and announcement and make a variety of replacements and modification without departing substantially from spirit of the present invention.Therefore, protection scope of the present invention should
The content disclosed in embodiment is not limited to, and various replacements and modification without departing substantially from the present invention should be included, and is appended right
It is required that covered.
Claims (3)
1. a kind of centrifugal fan, including a fan frame and one is placed in impeller in the fan frame, and the side of the fan frame is provided with an air-out
Mouthful, the impeller-driven air-flow flows out from the air outlet, it is characterised in that:The fan frame at the air outlet formed with being available for this
The opening of centrifugal fan inlet air, the centrifugal fan work when outside air along the opening enter the centrifugal fan inside, and
Flowed out from the air outlet, the fan frame includes a base and sets a top plate on the base, the base include a bottom plate and
The side wall upwardly extended by the bottom plate, the top plate are connected to the top of the side wall, are additionally provided with the side wall and are protruded out into fan frame
A tongue, the inner surface of the side wall protrudes outward to form a projection in close to the air outlet side, and the opening runs through the projection,
The height of opening is identical with the height of side wall, and is extended straight from the inner surface of the side wall to the direction away from the air outlet,
The opening is set close to the air outlet and the opening with the tongue face.
2. centrifugal fan as claimed in claim 1, it is characterised in that:The projection is integrally formed with the side wall.
3. centrifugal fan as claimed in claim 1, it is characterised in that:The opening rotates from the outer surface of the side wall along impeller
Direction tilt extension.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210380969.7A CN103727066B (en) | 2012-10-10 | 2012-10-10 | Centrifugal fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210380969.7A CN103727066B (en) | 2012-10-10 | 2012-10-10 | Centrifugal fan |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103727066A CN103727066A (en) | 2014-04-16 |
CN103727066B true CN103727066B (en) | 2017-12-22 |
Family
ID=50451301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210380969.7A Expired - Fee Related CN103727066B (en) | 2012-10-10 | 2012-10-10 | Centrifugal fan |
Country Status (1)
Country | Link |
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CN (1) | CN103727066B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112483467A (en) * | 2020-11-25 | 2021-03-12 | 奇鋐科技股份有限公司 | Fan flow guiding structure |
TWI742940B (en) * | 2020-11-25 | 2021-10-11 | 奇鋐科技股份有限公司 | Fan flow guide structure |
US11401946B2 (en) | 2021-01-06 | 2022-08-02 | Asia Vital Components Co., Ltd. | Fan flow guide structure |
CN113294383A (en) | 2021-07-02 | 2021-08-24 | 深圳兴奇宏科技有限公司 | Fan outer frame structure |
TWI820443B (en) * | 2021-07-02 | 2023-11-01 | 大陸商深圳興奇宏科技有限公司 | Fan frame structure |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4025223A (en) * | 1974-12-04 | 1977-05-24 | Braun Aktiengesellschaft | Fan arrangement |
US6348748B1 (en) * | 1999-03-31 | 2002-02-19 | Toshiba Home Technology Corporation | Fan motor |
TW201014980A (en) * | 2008-10-01 | 2010-04-16 | Pegatron Corp | Centrifugal fan |
CN102996516A (en) * | 2011-09-19 | 2013-03-27 | 台达电子工业股份有限公司 | Electronic device and heat dissipation module and centrifugal fan thereof |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI262991B (en) * | 2004-08-02 | 2006-10-01 | Sunonwealth Electr Mach Ind Co | Centrifugal blower having auxiliary radial inlets |
US8231331B2 (en) * | 2008-03-14 | 2012-07-31 | Wayne State University | Reduction of flow-induced noise in a centrifugal blower |
CN102635574A (en) * | 2011-02-15 | 2012-08-15 | 建准电机工业股份有限公司 | Radiator fan and fan frame thereof |
-
2012
- 2012-10-10 CN CN201210380969.7A patent/CN103727066B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4025223A (en) * | 1974-12-04 | 1977-05-24 | Braun Aktiengesellschaft | Fan arrangement |
US6348748B1 (en) * | 1999-03-31 | 2002-02-19 | Toshiba Home Technology Corporation | Fan motor |
TW201014980A (en) * | 2008-10-01 | 2010-04-16 | Pegatron Corp | Centrifugal fan |
CN102996516A (en) * | 2011-09-19 | 2013-03-27 | 台达电子工业股份有限公司 | Electronic device and heat dissipation module and centrifugal fan thereof |
Also Published As
Publication number | Publication date |
---|---|
CN103727066A (en) | 2014-04-16 |
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Granted publication date: 20171222 Termination date: 20181010 |