CN103185039A

CN103185039A - Thin-type fan

Info

Publication number: CN103185039A
Application number: CN2011104505567A
Authority: CN
Inventors: 刘智仁; 许佑玮
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: 2011-12-29
Filing date: 2011-12-29
Publication date: 2013-07-03
Anticipated expiration: 2031-12-29
Also published as: CN103185039B

Abstract

A thin-type fan comprises an impeller and a fan frame accommodating the impeller, wherein one side wall of the fan frame is provided with an air outlet, the fan frame also comprises an air inlet, and the air inlet is arranged on the other side wall which is adjacent to the side wall on which the air outlet is arranged. Compared with the prior art, a lateral intake and lateral exhaust structure is adopted, the thin-type fan is arranged on an appropriate position, no air intake space needs to be reserved among the impeller, an upper cover and a soleplate, so that an accommodating space which is formed by the upper cover and a fan base can be adequately utilized, and the air flow of the entire thin-type fan can be enhanced. On the basis of utilizing the thin-type fan, a high bearing system can be provided, oil storage volume of the bearing system can be guaranteed, a longer service life condition can be realized compared with the traditional fan, the supporting capacity of the high bearing system is strong, the stability of the entire thin-type fan can be enhanced, and the heat radiation performance of the entire thin-type fan can be the best.

Description

Thin fan

Technical field

The present invention relates to fan assembly, refer to a kind of thin fan that is applied to the electronic product heat radiation especially.

Background technique

Under the situation that electronic product performance promotes day by day, a large amount of heats is also followed and is given birth to.Radiation fan is the parts that often are used to auxiliary heat dissipation.

On the other hand, the trend that electronic product has size to dwindle gradually, weight lightens, and its thickness tends to thin typeization especially day by day, for example notebook computer.In order to satisfy the demand of slimming electronic product, fan also must develop towards slimming.

Traditional thin fan generally comprises the fan frame and is contained in the interior impeller of fan frame, and described fan frame comprises the sidewall of loam cake, lower cover and connection loam cake and lower cover, and described loam cake and lower cover are all offered suction port, and described sidewall one side sets out the air port.Under the limited slim framework in this space, how to overcome fluid impedance, improve air flow property, guarantee that the heat dissipation of thin fan becomes new challenge.Because computer inner space stricturization, the suction port up and down of thin fan must be provided with spacing simultaneously, and traditional thin fan thickness is subjected to serious compression, and air flow property is not high, thereby causes heat dissipation not high; Moreover after traditional thin fan attenuation, its whole height reduces, thereby the bearing arrangement height is reduced, and the oil reserve of described bearing reduces, and the support force of bearing descends, and greatly influences the working life of described thin fan.

Summary of the invention

In view of this, be necessary the thin fan that provides a kind of heat dissipation high.

A kind of thin fan comprises impeller and accommodates the fan frame of this impeller that offer an exhaust outlet on one sidewall of described fan frame, described fan frame also comprises an intake grill, and described intake grill is opened on another sidewall adjacent with this exhaust outlet sidewall of living in.

Compared with prior art, the present invention adopts the framework of side air admission side direction air-out, thin fan is located on the suitable position, need not to reserve admission space between the impeller of thin fan and loam cake, the base plate, so design can be fully utilized described loam cake and the containing space that the fan seat encloses formation, thereby promotes the throughput of whole thin fan.On the other hand, the space that originally be used for reserving admission space can be used for increasing the thickness of bearing arrangement, to guarantee the oil reserve of bearing arrangement, conventional fan has higher life-span condition relatively.Thicker in addition bearing arrangement enabling capabilities is stronger, can strengthen the steadiness of whole thin fan, thereby the heat dispersion that guarantees whole thin fan reaches best.

With reference to the accompanying drawings, the invention will be further described in conjunction with embodiment.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the thin fan of an embodiment of the present invention.

Fig. 2 is the three-dimensional assembly diagram of thin fan shown in Figure 1.

Fig. 3 is that the air-flow of thin fan shown in Fig. 1 moves towards schematic representation.

Fig. 4 is the three-dimensional exploded view of the thin fan of another embodiment of the present invention.

Fig. 5 is the three-dimensional assembly diagram of thin fan shown in Fig. 4.

Fig. 6 moves towards schematic representation for the air-flow of thin fan described in Fig. 4.

The primary component symbol description

Thin fan	100
		The fan frame	10
Impeller	20
		The fan seat	11
Loam cake	12
		Containing space	13
Base plate	111
		The first side wall	112
Second sidewall	113
		The 3rd sidewall	114
First depressed part	1111
		Groove	1112
Projection	1113
		Intake grill	115
Exhaust outlet	116
		Tongue	1121
Arc inner wall	117
		Runner	118
Plat part	1131
		The auxiliary section	1141
The tip of the tongue	1142
		Second depressed part	121
Wheel hub	21
		Flabellum	22
Joint	23
		The holding ring	221
Blade	222
		Locating slot	2221

Following embodiment will further specify the present invention in conjunction with above-mentioned accompanying drawing.

Embodiment

See also Fig. 1 to Fig. 3, be the thin fan 100 of first embodiment of the invention, it comprises a fan frame 10 and is contained in the interior impeller 20 of this fan frame 10.These thin fan 100 holdings can be fixed on the related electronic device (not shown), to assist the electronic equipment distribute heat.

Concrete, see also Fig. 1, this fan frame 10 comprises a fan seat 11 and is positioned at a loam cake 12 on this fan seat 11, described fan 11 and this loam cake 12 enclose and are a containing space 13, in order to accommodate described impeller 20.Described fan seat 11 comprises a base plate 111 and from this upwardly extending the first side wall 112 in base plate 111 edges, second sidewall 113 and three sidewall 114 relative with this second sidewall 113.Described base plate 111 plate-like structure that is square, its edge in abutting connection with the 3rd sidewall 114 caves inward and forms one first depressed part 1111, described first depressed part 1111 roughly is " W " shape, it comprises two symmetrical grooves 1112 and connects this two groove 1112 and outward extending arc convex 1113, described two grooves 1112 mutually away from two edges cave in slightly towards the direction that deviates from mutually, described first depressed part 1111 is used for the described loam cake 12 of follow-up cooperation so that impeller 20 parts expose.

The outer surface of described the first side wall 112, second sidewall 113 and the 3rd sidewall 114 all is the plane of rule, described the first side wall 112 and described the 3rd sidewall 114 lay respectively at the both sides of this first depressed part 1111, and enclose jointly with described base plate 111 and loam cake 12 and to form an intake grill 115, described second sidewall 113 encloses jointly with the 3rd sidewall 114 spaces and with described base plate 111 and loam cake 12 and forms an exhaust outlet 116, described intake grill 115 is adjoining with this exhaust outlet 116, and the 3rd sidewall 114 is between this intake grill 115 and exhaust outlet 116.

Concrete, described the first side wall 112 extends to form a tongue 1121 near the internal surface of these exhaust outlet 116 sides towards these impeller 20 directions, and this tongue 1121 cooperates with the 3rd sidewall 114 for follow-up, and the air-flow that impels impeller 20 to produce is overflowed from these exhaust outlet 116 sides.Described the first side wall 112 and second sidewall, 113 mutual close side internal surfaces form an arc inner wall 117, described arc inner wall 117 and this impeller 20 are mutually across a certain distance to form a runner 118, so that this exhaust outlet 116 of air flow direction that guiding enters from intake grill 115.Described second sidewall 113 comprises one from these arc inner wall 117 terminal plat parts 1131 that extend, and described plat part 1131, the 3rd sidewall 114, loam cake 12 and base plate 111 enclose and form this exhaust outlet 116.Described the 3rd sidewall 114 is positioned on the base plate 111 the diagonal angle place relative with this arc inner wall 117, and described the 3rd sidewall 114 comprises an auxiliary section 1141 and extends the tip of the tongue 1142 that forms from this auxiliary section 1141 to these impeller 20 directions.Described auxiliary section 1141 is the bulk of rule, and it cooperates this intake grill 115 of formation with this first side wall 112, base plate 111 and loam cake 12, and cooperates this exhaust outlet 116 of formation with this second sidewall 113, base plate 111 and loam cake 12.The described the tip of the tongue 1142 flushes with the edge near the 3rd sidewall 114 of described groove 1112 near a side of this intake grill 115, and to the slight indent of these exhaust outlet 116 sides, the described the tip of the tongue 1142 ends to the interval of impeller 20 equals described tongue 1121 to the interval of impeller 20, and less than the width of this runner 118.The described the tip of the tongue 1142 cooperatively interacts with described tongue 1121, makes the air-flow of these intake grill 115 sides enter this runner 118 easily, and owing to the effect of keeping out of the two, the air-flow that impeller 20 runnings produce is easily overflowed from these exhaust outlet 116 sides simultaneously.

Described loam cake 12 planar that is square, the side margin that this loam cake 12 is positioned at this intake grill 115 is recessed to form one second depressed part 121 to these second sidewall, 113 directions, and projection and first depressed part 1111 of described second depressed part 121 on this base plate 111 is overlapped.Described second depressed part 121 cooperatively interacts with this first depressed part 1111, makes described impeller 20 parts expose to this fan frame 10, and this kind design can increase the area of these thin fan 100 intake grills 115 sides, and then strengthens the heat exchanging function of high thin fan 100.

Described impeller 20 is ccontaining to be fixed in the containing space 13 of described fan frame 10.This impeller 20 comprises wheel hub 21, be located at the flabellum 22 of these wheel hub 21 peripheries and connect the joint 23 of this wheel hub 21 and flabellum 22.This wheel hub 21 is located at the central position of this base plate 111, and these wheel hub 21 inboards are provided with bearing arrangement (not shown) and interlock circuit device (not shown), thereby described wheel hub 21 can rotate under bearing arrangement drives.Described flabellum 22 is located at the periphery of this wheel hub 21, and the height of this flabellum 22 is less than first, second, third sidewall 112,113,114 height.Described flabellum 22 comprises a holding ring 221 and is nested in some blades 222 on this holding ring 221 that described holding ring 221 is flat ring structure.Each blade 222 is vertical arrangement, namely blade 222 in the face of this first, second, third sidewall 112,113,114 edge-perpendicular in base plate 111, described some blades 222 are crooked shape sheet.Each blade 222 all offers locating slot 2221 near a side of these holding rings 221, and these some locating slots 2221 are nested on the holding ring 221, thereby makes holding ring 221 wear the locating slot 2221 of blade 222 and fixing these some blades 222.

During these thin fan 100 work, see also Fig. 3, described impeller 20 rotates in the counterclockwise direction, air-flow enters into thin fan 100 inside from this intake grill 115 under the driving of this impeller 20, described air-flow carries over the inwall of these the first side wall 112 inwalls and second sidewall 113 and overflows from these exhaust outlet 116 sides under the guiding of runner 118.Because described the 3rd sidewall 114 thes tip of the tongue 1142 end-to-end distances are less from the spacing of this impeller 20, and the tip of the tongue 1142 presents bending to a certain degree, this tongue 1121 prevents that on the one hand air-flow from directly blowing to these exhaust outlet 116 sides near the 3rd sidewall 114 ends from this intake grill 115, and the air-flow of also keeping out this runner 118 of flowing through simultaneously goes out to these intake grill 115 side adverse currents via this tip of the tongue 1142 from these exhaust outlet 116 sides.

The present invention adopts the framework of side air admission, side direction air-out, so that thin fan 100 is located on the suitable position, need not to reserve admission space between the impeller 20 of thin fan 100 and loam cake 12, the base plate 111, so design can be fully utilized described loam cake 12 and fan seat 11 containing spaces 13 that enclose formation, thereby under the prerequisite that does not increase thickness, promote the throughput of whole thin fan 100, reach good heat dissipation.On the basis of using thin fan 100, owing to need not to reserve admission space between the impeller 20 of thin fan 100 and loam cake 12, the base plate 111, the present invention can arrange the thicker bearing arrangement of thickness, and to guarantee the oil reserve of bearing arrangement, conventional fan has higher life-span condition relatively.Higher in addition bearing arrangement enabling capabilities is stronger, can strengthen the steadiness of whole thin fan, thereby the heat dispersion that guarantees whole thin fan reaches best.

See also Fig. 4 to Fig. 6, another preferred embodiment for thin fan 100 of the present invention, thin fan 100 among this embodiment and the structural similarity in above-described embodiment, difference is the loam cake 12 of described thin fan 100 and the square plate shape that base plate 111 all is rule, and described impeller 20 is contained in the described fan frame 10 fully.

Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.

Claims

1. thin fan, comprise impeller and accommodate the fan frame of this impeller, offer an exhaust outlet on one sidewall of described fan frame, it is characterized in that: described fan frame also comprises an intake grill, and described intake grill is opened on another sidewall adjacent with this exhaust outlet sidewall of living in.

2. thin fan as claimed in claim 1, it is characterized in that: described fan frame comprises a fan seat and is positioned at loam cake on this fan, described fan seat comprises a base plate, and be located at the first side wall on this base plate, second sidewall that joins with the first side wall and three sidewall relative with this second sidewall, described loam cake, base plate, the first side wall and the 3rd sidewall enclose and form this intake grill, and described loam cake, base plate, second sidewall and the 3rd sidewall enclose and form this exhaust outlet.

3. thin fan as claimed in claim 2, it is characterized in that: described the first side wall, second sidewall and the 3rd sidewall outer surface are the plane.

4. thin fan as claimed in claim 2, it is characterized in that: the end internal surface that described the first side wall and second sidewall join forms an arc inner wall, described arc inner wall and this impeller are separated by a predetermined spacing to form a runner, and described the 3rd sidewall is positioned at place, diagonal angle relative with arc inner wall on this base plate.

5. thin fan as claimed in claim 4 is characterized in that: described the first side wall and the 3rd sidewall are positioned at these intake grill both sides and protrude out to this impeller direction respectively and form a tongue, and described two tongues shrink to impeller from the first side wall, the 3rd sidewall respectively.

6. thin fan as claimed in claim 2 is characterized in that: the described base plate planar that is square.

7. thin fan as claimed in claim 2 is characterized in that: the described loam cake planar that is square.

8. thin fan as claimed in claim 2, it is characterized in that: the bottom edge of contiguous intake grill is recessed to form one first depressed part to this second sidewall direction, and described first depressed part comprises two symmetrical grooves and connects these two grooves and to an arc convex that extends away from second sidewall direction.

9. thin fan as claimed in claim 8 is characterized in that: contiguous intake grill cover rim is recessed to form one second depressed part to this second sidewall direction, and projection and this first depressed part of described second depressed part on this base plate is overlapped.

10. thin fan as claimed in claim 1 is characterized in that: described impeller comprises wheel hub, be located on leaf joint structure around the wheel hub and holding at structural several blades of this leaf joint.