CN202251097U

CN202251097U - Heat radiation fan

Info

Publication number: CN202251097U
Application number: CN2011203067791U
Authority: CN
Inventors: 张�杰
Original assignee: SHENZHEN ZHUOYI HENGTONG COMPUTER TECHNOLOGY CO LTD
Current assignee: SHENZHEN ZHUOYI HENGTONG COMPUTER TECHNOLOGY CO LTD
Priority date: 2011-08-22
Filing date: 2011-08-22
Publication date: 2012-05-30
Anticipated expiration: 2021-08-22

Abstract

The utility model provides a cooling fan, it includes: the fan comprises a bottom shell, a cover body and a fan body, wherein the bottom shell comprises a bottom surface and a side surface extending upwards from the side edge of the bottom surface, the cover body covers the side surface of the bottom shell to form an accommodating space between the cover body and the bottom shell, the fan body is arranged in the accommodating space, an air inlet is formed in the position of the fan body by the cover body, an air outlet is formed in the side surface, a pressurizing area and a release area adjacent to the air outlet are respectively formed in the accommodating space along the direction of air flow generated by the fan body, and the height of the release area along the direction of the side surface of the bottom shell is gradually. The utility model discloses an increase the space in release area and make from the transmission of booster zone can be rapidly and release explosively to the amount of wind pressure of multiplicable fan improves the fan performance.

Description

Radiation fan

Technical field

The utility model relates to a kind of fan, relates in particular to a kind of radiation fan.

Background technique

In electronic product microminiaturization and ever-increasing while of function day by day; Be accompanied by the increase of heat density; Therefore heat dissipation problem more and more receives people's attention, how in limited space, to take away heat efficiently, efficiently heat dissipation design and the heat exchanger piece optimization development trend that is inevitable.Shown in Fig. 1-2; Existing radiation fan 100 generally comprises: a base 110, a lid 120 and place base 110 and the interior fan 130 of lid 120 containing space that forms; Lid 120 is provided with intake grill 122; Base 110 sidewalls are provided with exhaust outlet 112, and air-flow gets into from intake grill 122, rotate through fan 130 to make air-flow from exhaust outlet 112 outputs.

Yet; Because during fan 130 rotations, its inboard, air channel can produce the bigger anallobar of a blast in contiguous gas comparatively dense place; Make gas pass through fan 130 in exhaust outlet 112 process of flowing; Receive the influence of this blast, thereby make the air output of fan be affected, thereby influence the overall performance of radiation fan.

The model utility content

The purpose of the utility model is to provide a kind of radiation fan, makes through the space that increases release area to discharge from being able to of transmitting of anallobar rapidlyly and explosively, thereby can increase the airflow pressure of fan, improves fan performance.

Be to realize above-mentioned purpose, the utility model provides a kind of radiation fan, and it comprises: drain pan, lid, and fan body; This drain pan comprises a bottom surface and the upwardly extending side of lateral margin from the bottom surface; Lid is covered on the drain pan side, makes to form a containing space between lid and the drain pan, and fan body is located in this containing space; This lid is provided with intake grill in the fan body position; This side is provided with exhaust outlet, and the airflow direction that produces along fan body in this containing space forms anallobar and the release area adjacent with exhaust outlet respectively, and this release area increases with respect to anallobar along the height on the drain pan side surface direction gradually.

Said lid to outer lug, makes release area increase gradually with respect to anallobar along the height on the drain pan side surface direction in the release area position.

The beneficial effect of the utility model: the utility model provides a kind of radiation fan; Its release area increases with respect to anallobar along the height on the drain pan side surface direction gradually, has increased the space of release area, makes air-flow when anallobar flows to release area; The release area space increases makes air-flow be able to discharge rapidlyly and explosively; Thereby can increase the airflow pressure of fan, improve fan performance, bigger improvement and optimization are all arranged on airflow pressure and noise.

In order further to understand the characteristic and the technology contents of the utility model, see also following detailed description and accompanying drawing, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited about the utility model.

Description of drawings

Below in conjunction with accompanying drawing, describe in detail through embodiment the utility model, the technological scheme that makes the utility model and other beneficial effect is obvious.

In the accompanying drawing,

Fig. 1 is the schematic top plan view of existing radiation fan;

Fig. 2 is the side sectional view of existing radiation fan;

Fig. 3 is the perspective exploded view of the utility model radiation fan;

Fig. 4 is the combination schematic representation of Fig. 3.

Embodiment

For further setting forth technological means and the effect thereof that the utility model is taked, be described in detail below in conjunction with the preferred embodiment and the accompanying drawing thereof of the utility model.

Shown in Fig. 3-4; The utility model provides a kind of radiation fan; It comprises: drain pan 10, lid 20, and fan body 30, this drain pan 10 comprise a bottom surface 12 and from the bottom surface the upwardly extending side 14 of 12 lateral margins, lid 20 is covered on the drain pan side 14; Make and form a containing space between lid 20 and the drain pan 10; Fan body 30 is located in this containing space, and this lid 20 is provided with intake grill 22 in fan body 30 positions, and this side 14 is provided with exhaust outlet 16; The airflow direction that produces along fan body 30 in this containing space forms anallobar A and the release area B adjacent with exhaust outlet respectively, and this release area B increases with respect to anallobar A along the height on 14 directions of drain pan side gradually.

Preferably, this lid 20 to outer lug, makes release area B increase gradually with respect to anallobar A along the height on 14 directions of drain pan side in release area B position.

During the utility model work, fan body 30 rotates in containing space, and stream pressure increases among the anallobar A; Air-flow flows to release area B direction then, and owing to the gradually expansion of air-flow along flow direction, pressure obtains discharging; Air current flow is during to release area B and since release area B height greater than anallobar B height, make air-flow be able to discharge rapidlyly and explosively; Thereby increase the airflow pressure of fan, improve fan performance, bigger improvement and optimization are all arranged on airflow pressure and noise.For the ease of explanation, each association of coming the radiation fan and the existing radiation fan of comparison the utility model below through table one.

Table one

Can find out all have bigger improvement and optimization, the utility model to can be used in the heat radiation solution of electronic product of communication/consumption electronic products/NB/ Other Instruments equipment on the utility model airflow pressure and the noise from table one.

In sum, the utility model provides a kind of radiation fan, and its release area increases with respect to anallobar along the height on the drain pan side surface direction gradually; Increased the space of release area; Make air-flow when anallobar flows to release area, the release area space increases makes air-flow be able to discharge rapidlyly and explosively, thereby can increase the airflow pressure of fan; Improve fan performance, bigger improvement and optimization are all arranged on airflow pressure and noise.

The above; For the person of ordinary skill of the art; Can make other various corresponding changes and distortion according to the technological scheme and the technical conceive of the utility model, and all these changes and distortion all should belong to the protection domain of the utility model claim.

Claims

1. a radiation fan is characterized in that, comprising: drain pan, lid, and fan body; This drain pan comprises a bottom surface and the upwardly extending side of lateral margin from the bottom surface; Lid is covered on the drain pan side, makes to form a containing space between lid and the drain pan, and fan body is located in this containing space; This lid is provided with intake grill in the fan body position; This side is provided with exhaust outlet, and the airflow direction that produces along fan body in this containing space forms anallobar and the release area adjacent with exhaust outlet respectively, and this release area increases with respect to anallobar along the height on the drain pan side surface direction gradually.

2. radiation fan as claimed in claim 1 is characterized in that, said lid to outer lug, makes release area increase gradually with respect to anallobar along the height on the drain pan side surface direction in the release area position.