CN102465894A

CN102465894A - Fan

Info

Publication number: CN102465894A
Application number: CN2010105363198A
Authority: CN
Inventors: 洪银树; 王科鉴; 陈业丰
Original assignee: Sunonwealth Electric Machine Industry Co Ltd
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 2010-11-09
Filing date: 2010-11-09
Publication date: 2012-05-23
Anticipated expiration: 2030-11-09
Also published as: CN102465894B

Abstract

The invention discloses a fan, which comprises a fan frame and a motor, wherein an accommodating space is formed inside the fan frame, in addition, the fan frame is provided with at least one side air inlet and at least one side air outlet communicated with the accommodating space, the motor is combined with the accommodating space of the fan frame and comprises a stator and a fan wheel, the fan wheel is rotatablely combined with the stator, the fan wheel is provided with a wheel hub and a plurality of blades, the wheel hub is provided with a top surface, each blade is respectively positioned on the top surface of the wheel hub, each blade respectively comprises a first end and a second end in the radial direction of the fan wheel, the first end and the second end are opposite, the first end of each blade is in outward arrangement, and a flow guide space is formed among the second ends of all blades. Therefore, the occurrence of the turbulent flow phenomenon is effectively prevented, and the heat radiation effect can also be improved.

Description

Fan

Technical field

The invention relates to a kind of fan, refer in particular to a kind of footpath and make progress, can flow the fan that imports and derive with radial direction by air feed at impeller.

Background technique

Existing fan roughly comprises two kinds in axial flow fan and blowing-type fan.Wherein axial flow fan has a relative axial wind inlet and an axial exhaust outlet in the axial direction respectively, so that import air-flow via this axial wind inlet, derives air-flow via this axial exhaust outlet again, and then heat sinking function is provided; Again, the blowing-type fan then is to have an axial wind inlet in the axial direction, and has an exhaust outlet radially diametrically so that import air-flow via this axial wind inlet, again via this radially the exhaust outlet lateral guide go out air-flow, and have heat sinking function equally.

Yet, with axial flow fan, but since only air-guiding dispel the heat towards the axial direction air-out, and can't dispel the heat towards the radial direction air-out by air-guiding; Therefore, when axial flow fan is applied to various electronic product, must be assembled in the top (like the end face of the central processing unit (CPU) of PC) of thermal source, cause the axial height of this electronic product to reduce; Again; With the blowing-type fan, though can via this radially the exhaust outlet lateral guide go out air-flow, just still must utilize should axial wind inlet importing air-flow; And be not suitable for the electronic product (like mobile phone or personal digital assistant etc.) that must import air-flow therefore, via side directions.

For this reason, also have a kind of footpath on the market and make progress, can import and derive the existing fan of air-flow with radial direction, so that be applicable to the electronic product that must import air-flow via side directions at impeller.As shown in Figure 1, announce " fan structure of advection " novel patent case No. 553323 for TaiWan, China, this existing fan 8 comprises a shell block 81 and an impeller 82.This shell block 81 has at least one wind inlet 811 and at least one exhaust outlet 812, is provided with a horizontal gas flow passage 813 between this wind inlet 811 and the exhaust outlet 812; This impeller 82 is arranged at this horizontal gas flow passage 813, and this impeller 82 has a wheel hub 821, several blades 822 of outer circumferential face formation of this wheel hub 821; Whereby, when 82 rotations of this impeller, between this wind inlet 811 and exhaust outlet 812, produce gas pressure difference, so that produce convection current and dispel the heat along this horizontal gas flow passage 813 between this wind inlet 811 and the exhaust outlet 812.

Yet; When impeller 82 that should existing fan 8 is installed in this horizontal gas flow passage 813, when blade 822 air-guidings of this impeller 82 produce in the process of convection current along this horizontal gas flow passage 813, because the wheel hub 821 of this impeller 82 also is positioned at this horizontal gas flow passage 813; Therefore; The air-flow that the blade 822 of this impeller 82 is guided will receive the obstruction of this wheel hub 821 easily, and then produce the flow-disturbing phenomenon, and reduce the integral heat sink effect of this existing fan 8.

Again, as shown in Figure 2, for TaiWan, China is announced " combined structure of blower fan " novel patent case No. 477492, this existing fan 9 comprises a rotator seat 91, an impeller 92 and a shell 93.This rotator seat 91 has several prominent pieces 911; This impeller 92 has several shrinkage pools 921, and this shrinkage pool 921 mutually combines with the piece 911 of should dashing forward; This shell 93 can supply ccontaining this rotator seat 91 and impeller 92, and this shell 93 is provided with a wind inlet 931 and an exhaust outlet 932; Whereby, when these impeller 92 rotations, but same air-guiding is directed into this shell 93 inside with radial direction via this wind inlet 931, and derives air-flow to dispel the heat via this exhaust outlet 932.

Yet because rotator seat 91 that should existing fan 9 and this impeller 92 formed air-flow path between this wind inlet 931 and exhaust outlet 932 all, therefore, the air-flow that this impeller 92 is guided receives the obstruction of this rotator seat 91 equally easily, and produces the flow-disturbing phenomenon; Moreover this impeller 92 must be assembled with this rotator seat 91 separately, the inconvenience that also causes assembling to use.

Summary of the invention

The present invention provides a kind of fan, imports and derives in the process of air-flow with radial direction at impeller, can prevent effectively that air-flow from being hindered, and is its main goal of the invention.

The fan according to the present invention comprises a fan frame and a motor.The inner formation of this fan frame one containing space, and be provided with at least one side wind inlet and at least one side air-out mouth that is communicated with this containing space; This motor is incorporated into the containing space of this fan frame, and this motor comprises a stator and an impeller, and this impeller rotatably combines this stator; This impeller is provided with a wheel hub and several blades, and this wheel hub has an end face, and respectively this blade lays respectively at the end face of this wheel hub; Footpath at this impeller makes progress; Respectively this blade has one first relative end and one second end respectively, and respectively first end of this blade is provided with outwardly, respectively forms a diversion space between second end of this blade.

As stated; In the process of this impeller air-guiding via this side wind inlet and this fan frame of this side air-out mouth turnover; Extend and exceed the end face of this wheel hub respectively towards this closure by each blade of fan of the present invention; And structural design such as this diversion space, can effectively prevent the generation of flow-disturbing phenomenon, to reach the effect that promotes radiating effect.

Description of drawings

Fig. 1: the three-dimensional exploded view of existing first kind of fan.

Fig. 2: the three-dimensional exploded view of existing second kind of fan.

Fig. 3: the three-dimensional exploded view of the fan of first embodiment of the invention.

Fig. 4: the assembled sectional view of the fan of first embodiment of the invention.

Fig. 5: the three-dimensional exploded view of the fan of second embodiment of the invention.

Fig. 6: the assembled sectional view of the fan of second embodiment of the invention.

The primary component symbol description:

1 fan frame 1a carrier 1b closure 1c side wall portion

11 containing spaces, 12 side wind inlets, 13 side air-out mouths, 2 motors

21 stators, 22 impellers, 221 wheel hub 221a substrates

The 221b ringwall 222 blade 222a first end 222b second end

223 end faces, 23 diversion spaces, 3 fan frame 3a carriers

3b closure 3c side wall portion 31 containing spaces, 32 side wind inlets

33 side air-out mouths, 34 grooves, 4 motors, 41 stators

42 impellers, 421 wheel hub 421a substrate 421b ringwalls

422 blade 422a, the first end 422b, second end, 423 end faces

43 diversion spaces, 44 lateral channels, 45 chassis, 8 fans

81 shell blocks, 811 wind inlets, 812 exhaust outlets, 813 horizontal gas flow passages

82 impellers, 821 wheel hubs, 822 blades, 9 fans

91 rotator seats, 911 prominent piece 92 impellers 921 shrinkage pools

93 shells, 931 wind inlets, 932 exhaust outlets

Embodiment

For letting above-mentioned and other purposes, characteristic and the advantage of the present invention can be more obviously understandable, hereinafter is special lifts preferred embodiment of the present invention, and conjunction with figs., elaborates as follows:

Please with reference to shown in Fig. 3 and 4, the fan of first embodiment of the invention comprises a fan frame 1 and a motor 2.This fan frame 1 is to flow the frame structure that flows with radial direction by air feed; 2 in this motor is incorporated into this fan frame 1 inside.

This fan frame 1 can be and anyly can supply the hollow frame structure that this motor 2 is ccontaining and air feed stream imports and derives with radial direction.Wherein this fan frame 1 comprises a carrier 1a, a closure 1b and a 1c of side wall portion at least, and relatively, the 1c of this side wall portion is between this carrier 1a and this closure 1b at interval for this carrier 1a and this closure 1b; Again, form a containing space 11 between this carrier 1a, closure 1b and the 1c of side wall portion, and the 1c of this side wall portion is provided with at least one side wind inlet 12 and at least one side air-out mouth 13, this at least one side wind inlet 12 and at least one side air-out mouth 13 these containing spaces 11 of connection.

In the present embodiment; This carrier 1a is a base; The 1c of this side wall portion extends axially for the lateral margin from this base and mutual several adjoining side wall, and this closure 1b then is a cover plate, and this cover plate is incorporated into the apical margin (is main according to graphic direction) of this side wall; And form this containing space 11 (side wall is around this containing space 11) between this cover plate and this base, this side wind inlet 12 and side air-out mouth 13 are arranged at this side wall respectively and are communicated with this containing space 11; Wherein this side wind inlet 12 and side air-out mouth 13 can as shown in Figure 3ly be arranged at adjacent two side walls respectively, perhaps also can be arranged at respectively relatively to two side walls.

This motor 2 is incorporated into this fan frame 1, and this motor 2 comprises a stator 21 and an impeller 22 (being rotor), and this stator 21 is in order to drive this impeller 22 rotation starts.This impeller 22 is provided with a wheel hub 221 and several blades 222, and this wheel hub 221 has an end face 223, and this end face 223 is towards this closure 1b; Respectively this blade 222 combines these wheel hubs 221, this impeller 22 axially on, respectively this blade 222 extends and exceeds the end face 223 of this wheel hub 221 respectively towards this closure 1b.Again; Footpath at this impeller 22 makes progress; Respectively this blade 222 has one first relative end 222a and one second end 222b respectively; Wherein respectively the first end 222a of this blade 222 respectively forms a diversion space 23 (also promptly respectively the second end 222b of this blade 222 be not-connected status) towards the 1c of this side wall portion between the second end 222b of this blade 222.

In the present embodiment; The stator 21 of this motor 2 is the carrier 1a that are incorporated into this fan frame 1; The wheel hub 221 of this impeller 22 rotatably combines this stator 21; Wherein this wheel hub 221 is made up of a substrate 221a and a ringwall 221b, and this end face 223 is positioned at this substrate 221a, and this ringwall 221b is then around the outer periphery of this substrate 221a.Again, respectively this blade 222 is end faces 223 that are incorporated into this substrate 221a as shown in the figure; Perhaps this blade 222 also can partly extend to the outer circumferential face of this ringwall 221b except that the end face 223 that is incorporated into this substrate 221a; Moreover in the present embodiment, this blade 222 is end faces 223 that one is incorporated into this substrate 221a, to promote the assembling convenience.

Fan of the present invention is when reality is used, and the alternating magnetic field that the stator 21 of this motor 2 is produced can be in order to drive this impeller 22 rotation starts; Whereby; When this fan can be installed in various electronic product; The blade 222 of this impeller 22 can import extraneous air-flow from this side wind inlet 12; Should fan frame 1 inside so that get into, export to extraneous space via this side air-out mouth 13 again, predetermined thermolysis was provided to be directed against the thermal source that is produced when various electronic product operates.

The major technique of fan of the present invention is characterised in that: the footpath at impeller 22 makes progress; Can import and derive air-flow via this side wind inlet 12 and this side air-out mouth 13 with radial direction; Therefore, when this fan is applied to various electronic product, then need not be assembled in the top of thermal source; The axial height of this electronic product is minimized, and this fan also can provide the preferable auxiliary heat dissipation effect of thermal source that is positioned at arround this side air-out mouth 13; Moreover; Since this impeller 22 axially on; Respectively this blade 222 extends and exceeds the end face 223 of this wheel hub 221 respectively towards this closure 1b; Therefore, this impeller 22 air-guiding smoothly passes in and out to dispel the heat via this side wind inlet 12 and this side air-out mouth 13, hinders the circulation of air-flows to prevent this wheel hub 221; The more important thing is,, therefore, can guarantee that air-flow is difficult for producing the flow-disturbing phenomenon in passing through the process of each blade 222, to promote the integral heat sink effect owing to respectively also form this diversion space 23 between the second end 222b of this blade 222.

With reference to shown in Fig. 5 and 6, be the fan that discloses second embodiment of the invention please, this fan comprises a fan frame 3 and a motor 4 equally.

4 carrier 3a, closure 3b, the 3c of side wall portion, containing space 31, side wind inlet 32, side air-out mouth 33, stator 41, impeller 42, wheel hub 421, substrate 421a, ringwall 421b, blade 422, the first end 422a, the second end 422b, end face 423 and diversion spaces 43 that disclose respectively of the fan frame 3 of second embodiment of the invention and motor; Be roughly the same, hold and do not give unnecessary details with first embodiment's carrier 1a, closure 1b, the 1c of side wall portion, containing space 11, side wind inlet 12, side air-out mouth 13, stator 21, impeller 22, wheel hub 221, substrate 221a, ringwall 221b, blade 222, the first end 222a, the second end 222b, end face 223 and diversion space 23.

The carrier 3a that second embodiment of the invention disclosed is similarly a base; The 3c of this side wall portion is from the lateral margin extension of this base and mutual several adjoining side wall; This closure 3b then is a cover plate, and the main difference of the fan of present embodiment and first embodiment's fan only is:

The central authorities of this carrier 3a are provided with a groove 34, and the wheel hub 421 of this motor 4 is placed in this groove 34; Again; Can be separated out a lateral channel 44 in these containing space 31 districts between the end face 423 of this impeller 42 and this closure 3b; Respectively this blade 422 is positioned at this lateral channel 44; Guaranteeing that this lateral channel 44 only has blade 422, and this side wind inlet 32 and side air-out mouth 33 as shown in Figure 5 be arranged at respectively relatively to two side walls (3c of side wall portion); Wherein this impeller 42 axially on; The open height h of this side wind inlet 32 and side air-out mouth 33 is between the horizontal position of this closure 3b and this end face 423; Make this side wind inlet 32 and side air-out mouth 33 blade 422 positions to being positioned at this impeller 42 respectively, make this wheel hub 421 can be positioned at the inboard of this two side wall (3c of side wall portion) relatively; Whereby, because this wheel hub 421 is positioned at outside this lateral channel 44, can guarantee that this lateral channel 44 only has blade 422; Therefore; When this impeller 42 imports air-flow via this side wind inlet 32, this air-flow will more not be vulnerable to the obstruction of this wheel hub 421, further to promote radiating effect.

And for example shown in Figure 6, in the footpath of this impeller 42 upwards, respectively one first end 422a of this blade 422 also can radially extend and exceeds this wheel hub 421 towards the 1c of this side wall portion, to increase whole wind dispelling area; Moreover, when respectively this blade 422 exceeds this wheel hub 421, respectively the root edge of this blade 422 (with graphic be main) can further form a chassis 45, this chassis 45 is connected in this wheel hub 421, increasing the structural strength of blade 422, and can promote the water conservancy diversion effect.

As stated; In the process of these

impeller

22,42 air-guidings via this

side wind inlet

12,32 and this fan frame 1,3 of this side air-out

mouth

13,33 turnover; Extend and exceed the end face 223 of this wheel hub 221 respectively towards this closure 1b, 3b by each blade 222,422 of fan of the present invention; And structural design such as this

diversion space

23,43, can effectively prevent the generation of flow-disturbing phenomenon, to reach the effect that promotes radiating effect.

Claims

1. a fan is characterized in that, comprises:

A fan frame, containing space of inner formation, and be provided with at least one side wind inlet and at least one the side air-out mouth that is communicated with this containing space; And

A motor is incorporated into the containing space of this fan frame, and this motor comprises a stator and an impeller; This impeller rotatably combines this stator, and this impeller is provided with a wheel hub and several blades, and this wheel hub has an end face; Respectively this blade lays respectively at the end face of this wheel hub, makes progress in the footpath of this impeller, and respectively this blade has relative one first end and one second end respectively; Respectively first end of this blade is provided with outwardly, respectively forms a diversion space between second end of this blade.

2. fan according to claim 1; It is characterized in that this fan frame comprises a carrier, a closure and a side wall portion, this side wall portion is positioned between this carrier and this closure; Form this containing space between this carrier, closure and the side wall portion; The end face of this wheel hub is towards this closure, and respectively this blade extends axially and exceed the end face of this wheel hub respectively towards this closure, and respectively first end of this blade towards this side wall portion.

3. fan according to claim 2 is characterized in that, this impeller axially on, the open height of this side wind inlet is between the horizontal position of this closure and this end face.

4. fan according to claim 2 is characterized in that, this impeller axially on, the open height of this side air-out mouth is between the horizontal position of this closure and this end face.

5. fan according to claim 3 is characterized in that, this side wind inlet is to being positioned at the leaf position of this impeller.

6. fan according to claim 4 is characterized in that, this side air-out mouth is to being positioned at the leaf position of this impeller.

7. according to claim 2,3,4,5 or 6 described fans, it is characterized in that be separated out a lateral channel in this containing space district between the end face of this impeller and this closure, respectively this blade is positioned at this lateral channel.

8. according to claim 2,3,4,5 or 6 described fans, it is characterized in that this carrier forms a groove, this groove is positioned at this containing space, and the stator of this motor is incorporated into this groove, and the wheel hub of this impeller is placed in this groove.

9. according to claim 2,3,4,5 or 6 described fans; It is characterized in that this carrier is a base, this side wall portion extends axially for the lateral margin from this base and mutual several adjoining side wall; This closure is a cover plate; This cover plate combines this side wall, and forms this containing space between this cover plate and this base, and this side wind inlet and side air-out mouth are arranged at adjacent two side walls respectively.

10. according to claim 2,3,4,5 or 6 described fans; It is characterized in that this carrier is a base, this side wall portion extends axially for the lateral margin from this base and mutual several adjoining side wall; This closure is a cover plate; This cover plate combines this side wall, and forms this containing space between this cover plate and this base, this side wind inlet and side air-out mouth be arranged at respectively relative to two side walls.

11., it is characterized in that this blade one is incorporated into the end face of this wheel hub according to claim 1,2,3,4,5 or 6 described fans.

12., it is characterized in that in the footpath of this impeller upwards, respectively first end of this blade radially extends and exceeds this wheel hub towards this side wall portion according to claim 2,3,4,5 or 6 described fans.

13. fan according to claim 12 is characterized in that, respectively the root edge of this blade forms a chassis, and this chassis is connected in this wheel hub.