CN102954035B - Thin fan - Google Patents

Abstract

A kind of thin fan, including fan frame and the flabellum that is contained in fan frame, described flabellum includes wheel hub, the leaf joint structure that is located on around wheel hub and the holding some blades in this leaf joint structure, and these some blades are made up of magnalium.Compared with prior art, its thickness is the most thinning, makes this thin fan possess bigger admission space, has more wind flow, thus ensures the heat dissipation of thin fan；Simultaneously as flabellum lower thickness, the overall volume of flabellum reduces, and for comparing existing plastic cement flabellum, weight decreases；Furthermore, owing to magnalium flabellum possesses preferably material characteristic, flabellum stress gets a promotion, and is not susceptible to deformation, it is to avoid interfere between flabellum and upper cover, thus improves the stability of thin fan.

Description

Thin fan

Technical field

The present invention relates to fan assembly, particularly relate to a kind of thin fan being applied to electronic product radiating.

Background technology

In the case of electronic product performance promotes day by day, substantial amounts of heat is also adjoint and gives birth to.Radiator fan is commonly used to the parts of auxiliary heat dissipation.

On the other hand, electronic product has size to be gradually reduced, the trend of weight, and its thickness tends to thin type the most day by day, such as notebook computer.In order to meet the demand of thin-type electronic product, fan also must be directed towards slimming development.

Thin fan generally comprises fan frame and the flabellum being contained in fan frame, and described fan frame includes upper cover, lower cover and connects the sidewall of upper cover and lower cover.Under the slim framework of this limited space, how to overcome fluid impedance, raising air flow property, ensure that the heat dissipation of thin fan becomes new challenge.Traditional thin fan uses plastic cement flabellum, owing to plastic cement flabellum takes outgoing molding, the flabellum thickness after molding at least above 0.6 millimeter, generally 0.8 millimeter.Owing to flabellum is thicker, its to a certain degree upper heat dispersion limiting thin fan, secondly, under long-time rotation and hot environment, plastic cement flabellum is easily generated deformation, the interference being likely to result between flabellum and upper cover, affects the operating of thin fan, if taking traditional minimizing flabellum height with the method avoided interference with, then can weaken the heat dispersion of thin fan further.Therefore, it is necessary to provide a kind of stable, thin fan that heat dissipation is high rational in infrastructure.

Summary of the invention

In view of this, it is necessary to a kind of stable, thin fan that heat dissipation is high rational in infrastructure is provided.

A kind of thin fan, including fan frame and the flabellum that is contained in fan frame, described flabellum includes wheel hub, the leaf joint structure that is located on around wheel hub and the holding some blades in this leaf joint structure, and these some blades are made up of magnalium.

Compared with prior art, the flabellum of above-mentioned thin fan is made up of magnalium, and its thickness is the most thinning, makes this thin fan possess bigger admission space, has more wind flow, thus ensures the heat dissipation of thin fan；Simultaneously as flabellum lower thickness, the overall volume of flabellum reduces, and for comparing existing plastic cement flabellum, weight decreases；Furthermore, owing to magnalium flabellum possesses preferably material characteristic, flabellum stress gets a promotion, and is not susceptible to deformation, it is to avoid interfere between flabellum and upper cover, thus improves the stability of thin fan.

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

Accompanying drawing explanation

Fig. 1 is the three-dimensional assembly diagram of the thin fan of an embodiment of the present invention.

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

Fig. 3 is the three-dimensional exploded view of thin fan shown in Fig. 1.

Fig. 4 is the three-dimensional exploded view of another angle of thin fan shown in Fig. 3.

Fig. 5 is the performance chart of thin fan shown in Fig. 1.

Main element symbol description

Thin fan	100
		Fan frame	10
Flabellum	20
		Upper cover	11
Lower cover	12
		Sidewall	13
Connecting portion	14
		Receiving space	15
Air intake vent	111
		Body	131
First side plate	132
		Second side plate	133
Air outlet	134
		First lug	141
Perforation	142、124
		Buckle	143
Supporting part	121
		Newel	122
Second lug	123
		Groove	125
Wheel hub	21
		Leaf joint structure	22
Blade	23
		Roof	211
Annular sidewall	212
		Axle center	213
Body	221
		Holding ring	222
Connect sheet	223
		Locating slot	231

Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.

Detailed description of the invention

Referring to Fig. 1 and Fig. 2, for the thin fan 100 of one embodiment of the invention, it includes a fan frame 10 and the flabellum 20 being contained in this fan frame 10.This thin fan 100 holding is fixed in related electronic device (not shown), to assist electronic installation to distribute heat.

Please refer to Fig. 3 and Fig. 4, this fan frame 10 includes upper cover 11, lower cover 12, the volute sidewall 13 being connected between this upper cover 11 and lower cover 12 and the connecting portion 14 extended by volute sidewall 13 lateral margin.This sidewall 13 is downward one elongation moulding from the outer peripheral edge of this upper cover 11, and this upper cover 11, lower cover 12, sidewall 13 and connecting portion 14 surround and form the receiving space 15 housing this flabellum 20.

Concrete, this upper cover 11, lower cover 12 are all in tabular and be oppositely arranged.The central authorities of this upper cover 11 are provided with the air intake vent 111 of a circle, in order to guide absorption cold air.

This sidewall 13 is a semi-enclosed structure, and it includes the body 131 of an arc and respectively from outward extending one first side plate 132 and one second side plate 133 of two ends of body 131.Described first side plate 132 and the second side plate 133 are all in plate, and are parallel to each other.One end away from arc body 131 of this first side plate 132 and this second side plate 133 forms the air outlet 134 of a rectangle.

This connecting portion 14 is vertically extended outward horizontally so as to form from this sidewall 13 lower edge.Described connecting portion 14 is to the position of two ends of body 131 being provided with two first lugs 141, and each first lug 141 includes a circular perforations 142.Can be connected described upper cover 11 and lower cover 12 by the connector (not shown) running through circular perforations 142, follow-up be fixed on again in related electronic device (not shown).This connecting portion 14 may also include some buckles 143 downwardly extended, thus thin fan 100 holding is fixed in related electronic device (not shown) by available buckle 143.

This lower cover 12, in tabular, is provided with a supporting part 121 at corresponding upper cover 11 air intake vent 111 of this lower cover 12.Projection one newel 122 in the middle part of this supporting part 121, in order to the connection between secure fit this lower cover 12 and this flabellum 20.The position of corresponding two first lugs 141 of described lower cover 12 is provided with two second lugs 123, and each second lug 123 includes a circular perforations 124.This second lug 123 can cooperate with this first lug 141 to be connected fixed cover 11 and lower cover 12 via the connector running through circular perforations 124,142.Some grooves 125 are offered in the position of the peripheral some buckles of corresponding connection parts 14 143 of this lower cover 12, this thin fan 100 holding are fixed on related electronic device in order to coordinate with these some buckles 143.

This flabellum 20 includes wheel hub 21, be located on around wheel hub 21 leaf joint structure 22 and be arranged on the some blades 23 in this leaf joint structure 22.

Concrete, described wheel hub 21 is in tubular, and it includes a roof 211 and the annular sidewall 212 extended vertically downward from roof 211, and the external diameter of described roof 211 is slightly less than the external diameter of this annular sidewall 212.An axle center 213 is protruded out downward vertically inside the roof 211 of this wheel hub.Being provided with rotating shaft (not shown) and interlock circuit device (not shown) inside this wheel hub 21, this axle center 213 is connected cooperation with described rotating shaft (not shown), thus described wheel hub 21 can rotate under rotating shaft drives.

It is peripheral that this leaf joint structure 22 is located on described wheel hub 21, and it includes body 221, holding ring 222 and connects this body 221 and be connected sheet 223 with the some of holding ring 222.This body 221 is in circular, and its radius is gradually increased along the bearing of trend of described annular sidewall 212.Setting that this body 221 is peripheral with described wheel hub 21 roof 211 and all fits in ring wall 212 periphery, in order to the rotation of follow-up cooperation leaf joint structure 22.Described some connection sheets 223 are located at body 221 periphery of this leaf joint structure 22 and radially stretch out.Described holding ring 222 disc-shaped ringwise, it is formed at the end away from body 221 of these some connection sheets 223, is used for carrying described some blades 23.

Described some blades 23 are in Curved lamellar, and each blade 23 all offers locating slot 231 near the side of this holding ring 222.During assembling, these some locating slots 231 are nested on holding ring 222, so that holding ring 222 is fed through the locating slot 231 of blade 23 and fixes this some blades 23.

During work, cool exterior air is entered in fan frame 10 by air intake vent 111, forms air-flow and outwards blow out from this air outlet 134 under the effect of the high speed rotating of flabellum 20.

The present invention take magnalium make flabellum 20.Plastic cement vane thickness compared to more than 0.6mm, magnalium vane thickness can reduce to 0.5mm, preferably, in the present embodiment, the thickness of this magnalium blade is 0.3mm, greatly reduces the thickness of blade, makes this thin fan have more admission space, possesses bigger wind flow, owing to vane thickness is thinning, greater number of blade can be set, thus ensure the heat dissipation of thin fan.Referring to Fig. 5 and table 1, wherein, in figure, upper end curve is the curve synoptic diagram of magnalium flabellum, and lower end curve is the curve synoptic diagram of plastic cement flabellum, and for comparing plastic cement flabellum, under same rotational speed, the wind flow of magnalium flabellum promotes 15%, and air pressure promotes 40%.

	Revolutions per minute	Blade quantity	Air pressure (mmAq)	Wind flow (cfm)	Noise (dBA)
						Plastic cement flabellum	4700	37	11.87	2.00	37.3
Magnalium flabellum	4700	41	16.61	2.31	38.0

Table 1

Secondly, it is however generally that the material density of plastic cement flabellum is 1.65g/cm³, the material density of magnalium flabellum is 1.81g/cm³, in general, the material density of magnalium flabellum is some larger, but owing to magnalium flabellum is thinner so that flabellum magnalium not only volume is less, and has reduced compared to the weight of plastic cement flabellum.

Furthermore, magnalium flabellum has excellent material characteristic, and its stress intensity is of a relatively high, is not susceptible to deformation, can avoid the interference between flabellum and thin fan upper cover, and during fan running, its noise also decreases, thus improves the stability of thin fan.

It is understood that for the person of ordinary skill of the art, can conceive according to the technology of the present invention and make other various corresponding changes and deformation, and all these change all should belong to the protection domain of the claims in the present invention with deformation.

Claims (9)

1. a thin fan, including fan frame and the flabellum that is contained in fan frame, it is characterised in that: described If the leaf joint structure that flabellum includes wheel hub, be located on around wheel hub and holding cured leaf in this leaf joint structure Sheet, these some blades are made up of magnalium, and this leaf joint structure includes one in order to house the body of this wheel hub Portion and in order to fix the holding ring of these some blades, this body is arranged with the peripheral laminating of described wheel hub, In order to coordinate the rotation of leaf joint structure.

2. thin fan as claimed in claim 1, it is characterised in that: described fan frame include upper cover, under Lid and the sidewall being connected between upper cover and lower cover, described fan frame also includes a junction, described connecting portion Vertically it is extended outward horizontally so as to form from this sidewall lower edge, the two of the body of the corresponding described sidewall of described connecting portion The position of end is provided with some lugs, and each lug all offers a circular perforations.

3. thin fan as claimed in claim 2, it is characterised in that: the corresponding described connecting portion of this lower cover Lug position is also provided with some lugs, and on described lug, also correspondence offers circular perforations.

4. thin fan as claimed in claim 2, it is characterised in that: this connecting portion also include some to The buckle of lower extension.

5. thin fan as claimed in claim 4, it is characterised in that: the corresponding described connecting portion of this lower cover Some grooves are offered in the position of buckle.

6. thin fan as claimed in claim 1, it is characterised in that: this leaf joint structure also includes connecting Connection sheet between this body and holding ring, the body that this connection sheet is located at this leaf joint structure is peripheral And radially stretch out.

7. thin fan as claimed in claim 6, it is characterised in that: this holding ring disc-shaped ringwise, It is formed at the end away from body of these some connection sheets.

8. thin fan as claimed in claim 1, it is characterised in that: each described blade all offers one Locating slot, these some blades by respective locating slot holding in described leaf joint structure.

9. thin fan as claimed in claim 1, it is characterised in that: the thickness of these some blades is little In 0.5mm.