CN103727066B - Centrifugal fan - Google Patents

Centrifugal fan Download PDF

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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
Application number
CN201210380969.7A
Other languages
Chinese (zh)
Other versions
CN103727066A (en
Inventor
陈文正
刘智仁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furui Precise Component Kunshan Co Ltd
Hon Hai Precision Industry Co Ltd
Original Assignee
Furui Precise Component Kunshan Co Ltd
Hon Hai Precision Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Furui Precise Component Kunshan Co Ltd, Hon Hai Precision Industry Co Ltd filed Critical Furui Precise Component Kunshan Co Ltd
Priority to CN201210380969.7A priority Critical patent/CN103727066B/en
Publication of CN103727066A publication Critical patent/CN103727066A/en
Application granted granted Critical
Publication of CN103727066B publication Critical patent/CN103727066B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226Fan casings
    • F04D29/424Double entry casings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/684Combating 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

Centrifugal fan
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.
CN201210380969.7A 2012-10-10 2012-10-10 Centrifugal fan Expired - Fee Related CN103727066B (en)

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

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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

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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
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Granted publication date: 20171222

Termination date: 20181010