CN2702097Y

CN2702097Y - Double centrifugal fan

Info

Publication number: CN2702097Y
Application number: CN 200420004291
Authority: CN
Inventors: 陈世雄
Original assignee: XUAN PU TECHNOLOGY Co Ltd
Current assignee: XUAN PU TECHNOLOGY Co Ltd
Priority date: 2004-02-26
Filing date: 2004-02-26
Publication date: 2005-05-25
Anticipated expiration: 2014-02-26

Abstract

The utility model provides a double centrifugal fan, comprising a shell, a first centrifugal fan and a second centrifugal fan. The inner side of the shell takes a hollow type, and is divided into a left first containing chamber and a right second containing chamber side by side. The first centrifugal fan and the second centrifugal fan are respectively arranged in the first containing chamber and the second containing chamber. A first air inlet opening and a second air inlet opening are arranged on the shell; the first air inlet opening and the second air inlet opening are corresponding to the first containing chamber and the second containing chamber respectively; the bottom of the shell is provided with an air outlet. Wherein, the first centrifugal fan and the second centrifugal fan are respectively arranged in the first containing chamber and the second containing chamber to comprise a pair of centrifugal fans. The double centrifugal fan can be applied on a heat radiation device.

Description

Two centrifugal fans

Technical field

The utility model relates to a kind of pair of centrifugal fan, relates in particular to a kind of central processing unit (CPU) heat radiation aspects such as (CPU) that is applied to, by two two centrifugal fans that centrifugal fan constituted.

Background technique

Fig. 1 is a kind of known sink.As shown in Figure 1, sink 1a is applied to comprise a radiator 10a and an axial flow fan 11a on central processing unit (CPU) (CPU) 2a.Wherein, radiator 10a has a pedestal 100a, and pedestal 100a is used for being attached on the surface of central processing unit (CPU) 2a, and radiator 10a is the one-body molded fin 101a that a plurality of intervals vertical arrangement is arranged on pedestal 100a.Axial flow fan 11a is positioned on the fin 101a.Therefore, when central processing unit (CPU) 2a moved, the heat that it produced can be conducted to by the pedestal 100a of radiator 10a on the fin 101a, was sucked air and was formed cold airflow by the external world through radiation fan 11a again, the heat that to contain between each fin 101a is expelled, and reaches the purpose of heat radiation.

Because electronic heating components such as central processing unit (CPU) 2a now are along with the raising of technical merit, not only increased functionality, motion speed are accelerated, and its heating value also significantly improves.Therefore, above-mentioned sink 1a can't satisfy the demand on integral heat sink efficient.Simultaneously, again since the air-flow that the axial flow fan 11a of sink 1a is blown out vertically downward, makes air-flow directly impinge upon on the pedestal 100a, thereby heat can't be expelled, discharges to the external world, so radiating effect is very bad.

Above-mentioned known sink obviously has in addition improved inconvenience and defective existence on reality is used.

The design people is in view of the defective that exists in the above-mentioned prior art, through concentrating on studies and cooperating the utilization of scientific principle, proposes a kind of reasonable in design and effectively improve the utility model of above-mentioned defective finally.

Content of the present utility model

Main purpose of the present utility model is to provide a kind of pair of centrifugal fan, and it is one by two fans that centrifugal fan is constituted side by side.The work that this fan can utilize two centrifugal fans simultaneously radiator to be expelled heat improves the integral heat sink efficient of this radiator or sink.

In order to realize above-mentioned purpose, the utility model provides a kind of pair of centrifugal fan, comprises one first centrifugal fan, one second centrifugal fan and a housing.This enclosure interior is hollow shape, and left and right first room and second room side by side arranged.First and second centrifugal fan is installed in respectively in first and second room.Offer first wind inlet and second wind inlet on this housing.This first and second wind inlet is relative with this first and second room respectively, and housing bottom is an exhaust outlet.Wherein, this first and second centrifugal fan is installed in respectively in first and second room of housing, constitutes of the present utility model pair of centrifugal fan thus.

Of the present utility model pair of centrifugal fan can expel the heats that electro-heat equipment produced such as central processing unit (CPU) apace, discharge, and make heat that certain discharge path be arranged, and can not hoard between the runner of each radiating fin, therefore can reach better heat radiating effect effectively.

Brief description of drawings

Fig. 1 is the user mode schematic representation of known sink;

Fig. 2 is the three-dimensional exploded view of two centrifugal fans of the utility model first embodiment;

Fig. 3 is the three-dimensional combination figure of two centrifugal fans of the utility model first embodiment;

Fig. 4 is the user mode sectional view of two centrifugal fans of the utility model first embodiment;

Fig. 5 is the user mode sectional view of two centrifugal fans of the utility model second embodiment;

Fig. 6 is the user mode sectional view of two centrifugal fans of the utility model the 3rd embodiment;

Fig. 7 is the user mode sectional view of two centrifugal fans of the utility model the 4th embodiment;

Fig. 8 is the stereogram of two centrifugal fans of the utility model the 5th embodiment.

In the accompanying drawing, the list of parts of each label representative is as follows:

The 1a-sink

10a-radiator 100a-pedestal

101a-fin 11a-axial flow fan

The 2a-central processing unit (CPU)

The 1-fan

10-housing 10 '-the first housing

10 " the second housing 100-flange

The 101-first room 102-second room

The 103-first wind inlet 104-second wind inlet

105-exhaust outlet 106-support arm

107-perforation 11-first centrifugal fan

110-flabellum 111-motor

The 12-second centrifugal fan 120-flabellum

The 121-motor

The 2-fan housing

20-through hole 21-through hole

22-threaded connection hole 23-connection part

The 24-connection part

The 3-radiator

30-thermal conduction base 31-radiating fin

32-runner 33-tip

The 4-central processing unit (CPU)

Embodiment

In order to make those skilled in the art further understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, accompanying drawing only provide with reference to and usefulness is described, be not to be used for limiting the utility model.

Fig. 2 and Fig. 3 are respectively the utility model first embodiment's three-dimensional exploded view and three-dimensional combination figure.The utility model provides a kind of pair of centrifugal fan, as shown in Figures 2 and 3, in the present embodiment, two centrifugal fans 1 comprise a housing 10, housing 10 inside are hollow shape, dividing has left and right first room 101 and second room 102 (as shown in Figure 4) side by side, is respectively arranged with first centrifugal fan 11 and second centrifugal fan 12 in first and second room 101,102.

Offer first wind inlet 103 and second wind inlet 104 at housing 10 respectively corresponding to first and second room 101,102 places, first and second wind inlet 103,104 is positioned at the top of housing 10, the bottom of housing 10 is an exhaust outlet 105, and exhaust outlet 105 communicates with first and second room 101,102 simultaneously.

First and second

centrifugal fan

11,12 all includes centrifugal flabellum 110,120 and drives the motor 111,121 that flabellum 110,120 is done rotation.Motor 111,121 the turning to of running of first and second

centrifugal fan

11,12 can be opposite each other, makes the flabellum 110,120 of first and second

centrifugal fan

11,12 be relative reverse setting (as shown in Figure 4).The mode that first and second

centrifugal fan

11,12 is assemblied in first and second room 101,102 of housing is: in first and second room 101,102 support arm 106 is set respectively, by support arm 106 motor 111,121 of first and second

centrifugal fan

11,12 is fixed on the inside of housing 10, first and second

centrifugal fan

11,12 is connected with housing 10.Because above-mentioned structure about the thin portion of centrifugal fan is identical with known technology, and is not the category that the utility model is applied for a patent, so no longer given unnecessary details.

As shown in Figure 4, constitute described sink by fan 1 and a fan housing 2, a radiator 3.Wherein, radiator 3 can be general common aluminium extruding radiator, or the structure shown in the utility model embodiment.Radiator 3 comprises a thermal conduction base 30 and a plurality of radiating fin 31 that is spaced and is arranged on the thermal conduction base 30, and is formed with runner 32 because of being provided with at interval between each radiating fin 31.

Fan housing 2 is located on the radiator 3, and is positioned at the below of described pair of centrifugal fan 1.Fan housing 2 is for being the body member of one " ㄇ " font, and its top offers the through hole 20,21 relative with the exhaust outlet 105 of fan 1 housing 10.Housing 10 bottoms of fan 1 are formed with the flange 100 that is around in its outer rim, on flange 100, offer a plurality of perforation 107, offer and the 107 relative threaded connection holes 22 of boring a hole at fan housing 2 tops, penetrate respectively in perforation 107 and the threaded connection hole 22 with connection parts such as screw 23, fan 1 is fixedlyed connected with fan housing 2 and is integral.Fan housing 2 both sides also connection part 24 such as available screw penetrate and with fan housing 2 by on the thermal conduction base 30 that is threaded in radiator 3, fan housing 2 is located on the radiator 3, thereby constitutes a described sink.

As shown in Figure 4, when the utility model is applied on the central processing unit (CPU) (CPU) 4, the opposite rotation direction of first and second

centrifugal fan

11,12 by fan 1, the heat that the air-flow that both are blown out can be produced central processing unit (CPU) 4 is discharged towards the both sides of the runner 32 of radiator 3, apace heat is expelled, discharges, and make heat that certain discharge path be arranged, and can not hoard 32 of the runners of each radiating fin 31, therefore can reach better heat radiating effect effectively.

Fig. 5 is the utility model second embodiment's a user mode sectional view.As shown in Figure 5, in the present embodiment, be formed with middle high, a low tip 33, both sides on the thermal conduction base 30 of radiator 3, the surface of tip 33 is concave arc surface, and each radiating fin 31 cooperation bridges on tip 33.Thus, first and second

centrifugal fan

11,12 air-flows that blown out just can be taken advantage of a situation and heat be taken out of the runner 32 of each radiating fin 31, reduce that air-flow directly clashes into thermal conduction base 30 and the energy loss that causes.

Fig. 6 and Fig. 7 are respectively the utility model the 3rd and the 4th embodiment's user mode sectional view.As Figure 6 and Figure 7, first and second wind inlet 103,104 of the housing 10 of fan 1 can lay respectively at the and arranged on left and right sides (as shown in Figure 6) of housing 10 or lay respectively at the forward and backward both ends of the surface (as shown in Figure 7) of housing 10, and the position of concrete wind inlet can change according to fan 1 actual Environmental Conditions.

Fig. 8 is the utility model the 5th embodiment's a stereogram.As shown in Figure 8, in the present embodiment, fan 1 housing 10 be separated into first housing 10 ' with second housing 10 ".First and second

centrifugal fan

11,12 still be installed in respectively first and second housing 10 ', 10 " in.First and second housing 10 ', 10 " corresponding with the through hole 20,21 at fan housing 2 tops respectively.

In sum, the utility model is real to be rare novel creation product, it can reach the application target of expection really, solve the defective that exists in the prior art, have novelty and creativeness, meet the requirement of utility application fully, file an application according to Patent Law, would like to ask detailed survey and authorize this case patent, to ensure designer's right.

The above only is embodiment of the present utility model, and is non-so promptly limit claim of the present utility model, and the equivalent structure transformation that every utilization the utility model specification and accompanying drawing content are done all in like manner is included in the scope of the present utility model.

Claims

1. a two centrifugal fan is characterized in that, comprising:

One first centrifugal fan;

One second centrifugal fan; And

Housing, inside is hollow shape and divides left and right first room and second room side by side, offer first wind inlet and second wind inlet on the described housing, described first and second wind inlet is relative with described first and second room respectively, and described housing bottom is an exhaust outlet;

Described first and second centrifugal fan is installed in respectively in first and second room of described housing.

2. pair centrifugal fan as claimed in claim 1 is characterized in that described first and second centrifugal fan all comprises flabellum and drives the motor that described flabellum is done rotation, and the flabellum of described first and second centrifugal fan is relative reverse setting.

3. pair centrifugal fan as claimed in claim 1 is characterized in that described housing bottom is formed with the flange that is around in its outer rim.

4. pair centrifugal fan as claimed in claim 1 is characterized in that being respectively arranged with support arm in first and second room of described housing, by described support arm described first and second centrifugal fan is fixed on described enclosure interior.

5. pair centrifugal fan as claimed in claim 1 is characterized in that first and second wind inlet of described housing is positioned at described case top.

6. pair centrifugal fan as claimed in claim 1 is characterized in that first and second wind inlet of described housing lays respectively at the and arranged on left and right sides of described housing.

7. pair centrifugal fan as claimed in claim 1 is characterized in that first and second wind inlet of described housing lays respectively at the forward and backward both ends of the surface of described housing.

8. pair centrifugal fan as claimed in claim 1, it is characterized in that described housing is two the first relatively independent housings and second housing, described first housing and second housing form described first room and second room respectively, and described first, second centrifugal fan is installed in respectively in described first, second room.