CN102996473A

CN102996473A - Fan

Info

Publication number: CN102996473A
Application number: CN2011102734364A
Authority: CN
Inventors: 欧昆应; 刘智仁
Original assignee: Furui Precise Component Kunshan Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Furui Precise Component Kunshan Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2011-09-15
Filing date: 2011-09-15
Publication date: 2013-03-27
Anticipated expiration: 2031-09-15
Also published as: CN102996473B

Abstract

The invention relates to a fan, which comprises a wind scooper and an impeller. Axial two ends of the wind scooper respectively form an air inlet and an air outlet; when the impeller runs, the wind scooper generates an axial flow exhausted from the air inlet to the air outlet; the wind scooper comprises an outer frame; and the diameter of the outer frame is gradually reduced along the axial direction of the fan from one side of the impeller to one side of the air outlet. The direction of a part of air flow generated by the fan is changed by the wind scooper, and the air flow outflows along the axial direction of the fan; and the heat dissipation efficiency of the fan is increased.

Description

Fan

Technical field

The present invention relates to a kind of for the fan to electronic element radiating.

Background technique

Develop rapidly along with electronic technology, the heat-generating electronic elements motion speed such as central processing unit (CPU) are more and more faster, the also corresponding increase of heat that produces during its operation, for these dissipation of heats being gone out ensure the normal operation of electronic component, industry adopts fan that electronic component is dispelled the heat.

Traditional fan generally comprises a fan frame and is contained in an interior impeller of fan frame.This impeller comprises that one is positioned at the wheel hub at center and the some flabellums that extend around this wheel hub.During fan work, the air-flow of its exhaust outlet distributes unequal, air-flow is when fanning the edge of opening of frame through this, because the effect of moment, the air-flow of exhaust outlet is outward eddy flow diffusion rapidly, and it is more concentrated to cause distributing the closer to the fan peripheral air stream, distributes fewer the closer to fan center's air-flow, because without flabellum even can produce zone of silence, the radiating efficiency of fan is lower near the wheel hub of fan.

Summary of the invention

In view of this, be necessary the fan that provides a kind of radiating efficiency higher.

A kind of fan, comprise a wind scooper and an impeller, the axial two ends of this wind scooper form respectively a wind inlet and an exhaust outlet, when moving, impeller produces by the axial flow of wind inlet discharged to exhaust outlet in this wind scooper, this wind scooper comprises a housing, and the diameter of this housing axially reduces from the side direction exhaust outlet side near impeller gradually along fan.

A part of air-flow that said fans produces changes direction under the guiding of wind scooper, along the axial outflow of fan, improved the radiating efficiency of fan.

Description of drawings

Fig. 1 is an embodiment's of fan of the present invention assembling schematic representation.

Fig. 2 is the exploded view of the fan among Fig. 1.

Fig. 3 is that fan among Fig. 1 is along the sectional view of IV-IV line.

Fig. 4 is the schematic representation at the fan back side among Fig. 1.

The primary component symbol description

Fan	100
		Supporting base	10
Wind scooper	20
		Impeller	30
Body	22
		Lid	24
Housing	220
		Pedestal	222
Stator blade	224
		Exhaust outlet	226
Joint	240
		Bonnet	242
Driving rod	246
		Pore	244
Dull and stereotyped	12
		Riser	14
Pivoted hole	140
		Wheel hub	32
Flabellum	34
		Rotating shaft	36

Following embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.

Embodiment

See also Fig. 1, the fan 100 of one embodiment of the present of invention comprises a supporting base 10, a wind scooper 20 that is connected with this supporting base 10 and is placed in a impeller 30 in this wind scooper 20.

Please consult simultaneously Fig. 2 and Fig. 3, this wind scooper 20 comprises a body 22 and a lid 24 that is connected with this body 22.This body 22 comprises a housing 220, be positioned at these housing 220 centers a column pedestal 222 and from these pedestal 222 peripheral some helical stator blades 224 that extend and be connected with this housing 220.The opening in these housing 220 outsides consists of the exhaust outlet 226 of wind scooper 20.This housing 220 equals the length that pedestal 222 extends along central axis A A ' along the length of the central axis A A ' extension of fan 100.

The internal diameter of this housing 220 and external diameter are along the direction of the central axis A A ' of fan 100, from reducing gradually near a side direction of impeller 30 side (i.e. a side of close exhaust outlet 226) away from impeller 30, form a from inside to outside structure of convergent, near the housing 220 that fan 100 produces air-flows are flowed out from the direction that the direction that is basically parallel to central axis A A ' is changed to towards the central axis A A ' of fan 100 under the guiding of housing 220 inwalls, that is to say between the flow direction after the air-flow under the effect of housing 220 inwalls is changed and the central axis A A ' to have angle.

In the present embodiment, this pedestal 222 is divided into two parts along the direction of central axis A A ', the diameter of the part of these pedestal 222 close exhaust outlets 226 is along the direction of central axis A A ', side direction exhaust outlet 226 sides from more close impeller 30 reduce gradually, make air-flows that a part flows along pedestal 222 surface change direction with the direction outflow towards the central axis A A ' of fan 100 under the guiding of pedestal 222.This pedestal 222 is near the diameter of the part of impellers 30 direction along central axis A A ', from increasing gradually near a side direction of impeller 30 side away from impeller 30, be beneficial to air-flow along pedestal 222 surfaces towards exhaust outlet 226 side flow.

Preferably, this pedestal 222 reduces from a side direction exhaust outlet 226 sides of more close impeller 30 gradually near the diameter of the part of exhaust outlet 226.Certainly, this pedestal 222 also can be to reduce gradually or remain unchanged near the diameter of the part of impellers 30 from the trend that changes away from a side of impeller 30 near a side direction of impeller 30.

Please consult simultaneously Fig. 4, this lid 24 comprises a joint cylindraceous 240 and a bonnet 242 relative with impeller 30.It is interior to position that should joint 240 that this impeller 30 is placed in this wind scooper 20.The diameter of this joint 240 is along the direction of central axis A A ', and a side direction of certainly close bonnet 242 remains unchanged away from a side of bonnet 242.The relative both sides of the outer surface of this joint 240 convex stretches out two driving rods 246.The inside and outside surface of this bonnet 242 is roughly hemisphere face.This bonnet 242 is offered some pores 244 that concentric circle is arranged that are, and consists of the wind inlet of wind scooper 20.

This supporting base 10 comprises that the flat board 12 of a rectangle reaches from straight upwardly extending two risers 14 of these flat board 12 two ends marginal lappets.Each riser 14 is offered the pivoted hole 140 of a circle.Two driving rods 246 of this wind scooper 20 are placed in the pivoted hole 140 of this supporting base 10, wind scooper 20 and supporting base 10 are articulated cooperates and can rotate with respect to supporting base 10.

This impeller 30 comprises some flabellums 34 of a wheel hub 32, certainly these wheel hub 32 peripheral extensions and is fixed in a rotating shaft 36 of these wheel hub 32 central authorities.This rotating shaft 36 rotatably is fixed on pedestal 222 central authorities of this wind scooper 20.

During fan 100 work, impeller 30 High Rotation Speeds suck air-flow by the pore 244 of this wind scooper 20 from the external world, and air-flow is wind scooper 20 interior flowing.Because this housing 220 is along the direction of the central axis A A ' of fan 100 convergent from inside to outside, the air-flow that flows along housing 220 inwalls changes direction and flows out towards the direction of the central axis A A ' of fan 100 under the guiding of housing 220 inwalls.Stator blade 224 mobile a part of air-flows along wind scooper 20 flow out towards the direction of central axis A A ' under the guiding of stator blade 224.The part of the air-flow that fan 100 flows out is concentrated near the fan 100 exhaust outlets 226 outer side center axis AA ', and air-flow is more even to central distribution from fan 100 peripheries, has improved the radiating efficiency of fan 100.

Because this pedestal 222 reduces a part of air-flows that flow along pedestal 222 surfaces near the diameter of the part of exhaust outlet 226 under the guiding of pedestal 222 gradually from a side direction exhaust outlet 226 sides of more close impeller 30, changes direction and flows out towards the direction of the central axis A A ' of fan 100.The part air-flow that so, can further fan 100 be flowed out concentrates near the fan 100 exhaust outlets 226 outer side center axis AA ', with the uniformity of further raising air-flow and the radiating efficiency of fan 100.

Claims

1. fan, comprise a wind scooper and an impeller, the axial two ends of this wind scooper form respectively a wind inlet and an exhaust outlet, when moving, impeller produces by the axial flow of wind inlet discharged to exhaust outlet in this wind scooper, this wind scooper comprises a housing, it is characterized in that: the diameter of this housing axially reduces from the side direction exhaust outlet side near impeller gradually along fan.

2. fan as claimed in claim 1, it is characterized in that: this wind scooper also comprises a pedestal being located at the housing center and extends and be connected some stator blades with this housing from this pedestal is peripheral, this vane rotary is fixed on this pedestal, the diameter of the part of this pedestal of close exhaust outlet is axial along fan, and a side direction exhaust outlet side of more close impeller reduces gradually certainly.

3. fan as claimed in claim 2 is characterized in that: the diameter of this pedestal axially increases first from the side direction exhaust outlet side near impeller gradually along fan, then reduces gradually.

4. fan as claimed in claim 1, it is characterized in that: this wind scooper also comprises a lid that is connected with body, and this impeller is placed in this wind scooper.

5. fan as claimed in claim 4, it is characterized in that: this lid comprises a joint cylindraceous and a bonnet relative with impeller, this impeller is placed in this wind scooper position that should joint, this bonnet is offered some pores that concentric circle is arranged that are, and consists of the wind inlet of wind scooper.

6. fan as claimed in claim 5, it is characterized in that: the inside and outside surface of this bonnet is hemisphere face.

7. fan as claimed in claim 5 is characterized in that: the diameter of this joint along fan shaft to, from remaining unchanged near a side direction of the bonnet side away from bonnet.

8. fan as claimed in claim 1 is characterized in that: also comprise a supporting base that articulates with wind scooper.