CN2615394Y

CN2615394Y - Double-indrawing centrifugal computerized fan

Info

Publication number: CN2615394Y
Application number: CN 03244436
Authority: CN
Inventors: 李森墉; 林水木
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-04-02
Filing date: 2003-04-02
Publication date: 2004-05-12
Anticipated expiration: 2013-04-02

Abstract

The utility model relates to a double suction centrifugal computer fan, essentially comprising a socket, a thermal fan and a cover body, wherein the center of the socket is a volume placing groove for correspondingly imbedding the thermal fan, one side of the socket is an air outlet, the thermal fan is provided with double-section vanes, transverse sections of the vanes are all of S arc flow guiding curve which can improve free flow of wind, and outer vanes are more, intra vanes are directly and smoothly connected with a part of the outer vanes, the bottoms of all the outer vanes are fixed on a circular ring, when the computer fan disclosed by the utility model is driven to move, a wind leading-out computer fan does not yield retention zone and flow guiding speed of air quantity is more smooth and rapid. The intra vanes not only have pressurization effect but also quite good holding effect. As the structure of the utility model is high in rigidity, the vanes have flow guiding effect and air current sucked from double sides is not dragged by baffle, and the utility model has the advantages of high flow quantity, high efficiency and relatively low noise.

Description

Double suction is gone into centrifugal computer fan

Technical field

The utility model relates to a kind of double suction and goes into centrifugal computer fan, instigates the sink that is used for computer cpu (CPU) especially, has the Blade Design of curved surface curved arc by double-row type, can correspondence increase the wind-guiding amount of fan, and improve the radiating effect of computer.

Background technique

Computer is the electronics and IT products of modern's indispensability, it almost is everyone epoch that have a machine, and why computer can operate, system carries out by central processing unit (CPU) entirely, when carrying out running, must produce high temperature, and when producing high temperature, if not with it heat radiation, then can make the running of computer unsettled situation occur, so generally on central processing unit (CPU), can be provided with a sink (fan) usually, the high temperature of generation is dispelled the heat, so the execution stability of the design of the blade in the fan and computer cpu be closely bound up; And at the design aspect of radiating fin, the high temperature that central processing unit (CPU) is produced under the running of fan, can reach best radiating effect, can say that when using computer and operation be considerable problem.

Mostly be the fan design of single face inhalation type at general computer fan, as shown in Figure 1, but in order further to improve the effect of heat radiation, thereby there is the computer fan of dual suction type to design, to improve air quantity, (being No. 465681 novel patent case of notification number) as shown in Figures 2 and 3, it is a kind of centrifugal fan, at least comprise: a housing, have one first suction port, one second suction port, at least one relief opening and a plurality of help rib (rib), this helps rib to be arranged in this second suction port: a slewing gear is arranged in this housing; One blade structure more comprises: a wheel hub (hub) is coupled in this slewing gear; One dividing plate, along extending radially outwardly of this wheel hub, and this dividing plate has a upper surface and a lower surface; A plurality of first blades, be formed on the upper surface of this this dividing plate, have a gap and this first blade to have a unfilled corner between this first blade and this wheel hub, and a plurality of second blades, be formed on the lower surface of this dividing plate, between this second blade and this wheel hub one gap arranged; Wherein when inswept this of this blade structure helped rib, this second blade and this helped the angle of cut of rib to be about 90 degree.

But this kind dual suction type centrifugal fan has following many shortcomings:

1. the throughput difference that this upper and lower blowhole imported, air pressure inequality are located at the middle dividing plate of fan and will be made fan when running, produce vibrations, rock and noise.

2. be provided with dividing plate in the middle of this fan, the fluid of importing will when the fluid of upper and lower layer is released by the centrifugal pressurization of blade, easily produce the phenomenon of fluid reflux because of kept out by dividing plate to produce the phenomenon of friction and flow-disturbing in the exhaust outlet place.

3. the support of these blade central authorities is the straight line strip, no any streamline curved arc design, so the water conservancy diversion of convection cell is bad, the efficient of fan is inevitable bad.

This novel content

The utility model main purpose is to overcome the defective of above-mentioned prior art, provides a kind of novel double suction to go into centrifugal computer fan, by design of the present utility model, with importing circulation air quantity, the efficient of raising computer fan, and reduces noise.

The purpose of this utility model realizes by following technical proposals, the utility model is that a kind of double suction is gone into centrifugal computer fan, this computer fan mainly is made up of base, radiation fan and lid, and these base central authorities are a containing groove, and it can be inserted for the radiation fan correspondence; The base of base is provided with a large opening, as the suction port of one side wind; Large opening on the lid is then as the suction port of another side wind; One side of base then is an exhaust outlet; Be provided with the biserial blade in the radiation fan, all curved water conservancy diversion curve in the cross section of this blade can improve the mobile smooth and easy of wind, and this curve can be sigmoid curve or circular curve.And the quantity of outer leafs is more.Intra vane and directly smooth-going being connected of outer leafs partly, the bottom of all outer leafs all is fixed on the annulus.Because structural rigidity of the present utility model is strong, blade tool guide functions, the air-flow of bilateral suction is not subjected to obstructing of dividing plate, therefore the utlity model has the effect of high flow capacity, high efficiency and relative low noise.

Description of drawings

Fig. 1 is the fan stereogram of the known single face inhalation type of prior art;

Fig. 2 is the stereogram of the known centrifugal fan of prior art;

Fig. 3 is the known centrifugal fan radiating state schematic representation of prior art;

Fig. 4 is the three-dimensional exploded view of the utility model computer fan;

Fig. 5 is the plan view of the utility model computer fan;

Fig. 6 is the utility model computer fan radiating state schematic representation;

Fig. 7 is another embodiment of the utility model computer fan;

Fig. 8 is the another embodiment of the utility model computer fan.

The simple declaration of figure number

The utility model:

1 computer fan, 10 bases

11 radiation fans, 12 lids

13 containing grooves, 14 exhaust outlets

15 intra vanes, 16 outer leafs

17 air sucking mouths, 18 annulus

Relevant the utility model is for achieving the above object, and technological means that is adopted and effect thereof are lifted preferable possible embodiments now, and conjunction with figs. is described as follows, and makes to be easier to understand generation of the present utility model.

Embodiment

Fig. 4 is the three-dimensional exploded view of the utility model computer fan.The utility model is a kind of dual suction type computer fan, and this computer fan 1 mainly is made up of base 10, radiation fan 11 and lid 12, wherein:

Described base 10 central authorities are a containing groove 13, and it can install for radiation fan 11 correspondences; And be provided with an exhaust outlet 14 in a side of base 10.

Described radiation fan 11 is provided with intra vane 15 and outer leafs 16 biserial Blade Design, and all curved water conservancy diversion curve in the cross section of this blade can improve the mobile smooth and easy of wind, and the curved surface curved arc direction of inside and

outside blade

15,16 can be the design of opposite curved arc.And the quantity of this outer leafs 16 is more, intra vane 15 and outer leafs 16 direct smooth-going being connected partly, and this blade is the design (as shown in Figure 5) of S shape, and the bottom of all outer leafs 16 all is fixed on an annulus 18 tops.

The central authorities of described lid 12 establish an air sucking mouth 17, mainly are that air feed imports radiation fan 11 thus, derived by the exhaust outlet 14 of base 10, and this lid 12 mainly are to be locked on the base 10 again.

Please consult shown in Figure 6 again, in the time of in the radiation fan 11 with the utility model computer fan is arranged at base 10 containing grooves 13, being locked on base 10 apical margins by lid 12 finishes the computer fan assembling, and when radiation fan 11 running starts, system rotates with radiation fan 11 wind is sucked via air sucking mouth 17, and taken advantage of a situation by inboard blade 15 and to be guided to outside blade 16, and then the smooth-going exhaust outlet 14 of wind being derived base 10; When turning round start by this, because of blade of the present utility model is to design with double-row type, be that blade with biserial is arranged on same direction, the set height space of this inside and

outside blade

15,16 is more unaffected, so the computer fan of the also relative upper and lower double layer design that is higher than known structure of the air quantity of its importing.

Continuous please cooperate consult shown in Figure 7, the all curved extra curvature in inside and

outside blade

15,16 cross sections of this radiation fan 11, and the curved surface curved arc direction system of inside and

outside blade

15,16 can be in the same way, and the quantity of outer leafs 16 is more than intra vane 15, the fluid that intra vane 15 can be assembled is by the derivation of taking advantage of a situation of the outer leafs 16 of majority amount, and reaches good wind effect.

And for example shown in Figure 8, this figure is the another embodiment of the utility model computer fan,

This radiation fan 11 is provided with intra vane 15 and outer leafs 16 biserial Blade Design, and these outer leafs 16 correspondences are arranged at an annulus 18 tops, and the thickness of this annulus 18 can corresponding reduce, to increase the bore of air sucking mouth 17, below, to promote the effect of wind-guiding.

Take a broad view of above-mentionedly, we can know the utility model tool advantage what follows, and it is described below:

(1) the utility model is that a kind of double suction is gone into centrifugal computer fan, and all curved water conservancy diversion curve in the cross section of this blade can improve the mobile smooth and easy of wind, and this curve can be sigmoid curve or circular curve.Intra vane and directly smooth-going being connected of outer leafs partly can improve wind effect preferably, the air quantity that makes heat radiation concentrating more.

(2) the utility model is that a kind of double suction is gone into centrifugal computer fan, this inside and outside vanes fixed of cause is in the bottom, be located at middle unlike the used dividing plate of known technology, the throughput difference that this upper and lower blowhole imported, air pressure inequality, to make fan when running, and produce vibrations, rock and noise.And be provided with dividing plate in the middle of the known fan, the fluid of importing will when the fluid of upper and lower layer is released by the centrifugal pressurization of blade, easily produce the phenomenon of fluid reflux because of kept out by dividing plate to produce the phenomenon of friction and flow-disturbing in the exhaust outlet place.

Take a broad view of above-mentionedly, structure of the present utility model, feature can provide the structure improvement of the computer fan of the splendid and tool practicability of a kind of using effect really, and can make it have use value and progressive really,

The above; it only is preferred embodiment of the present utility model; when not limiting the scope that the utility model is implemented with this; the i.e. equivalence of doing according to claimed claim of the utility model application and description generally changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims

1. a double suction is gone into centrifugal computer fan, and its computer fan mainly is made up of base, radiation fan and lid, wherein:

Described base central authorities are a containing groove, and it can be inserted for the radiation fan correspondence, and are exhaust outlet in base one side, it is characterized in that:

Be provided with the biserial blade in the described radiation fan, the arc water conservancy diversion curve that the cross section of this blade all is the S shape can improve the mobile smooth and easy of wind; And the quantity of outer leafs is for more the more; Intra vane and directly smooth-going being connected of outer leafs partly, the bottom of all outer leafs all is fixed on the annulus.

2. double suction according to claim 1 is gone into centrifugal computer fan, it is characterized in that the design that inside and outside spoon of blade curved arc direction be can be in the same way of this radiation fan.