CN2775357Y

CN2775357Y - Heat radiation fan rotor capable of eliminating noise

Info

Publication number: CN2775357Y
Application number: CN 200420121893
Authority: CN
Inventors: 谢新茂
Original assignee: XIEXI MOTOR CO Ltd
Current assignee: XIEXI MOTOR CO Ltd
Priority date: 2004-12-30
Filing date: 2004-12-30
Publication date: 2006-04-26
Anticipated expiration: 2014-12-30

Abstract

The utility model relates to a heat dissipation fan rotor capable of eliminating noise. The utility model is characterized in that the inner of a hollow wheel boss is provided with a permanent magnet and a shaft rod which extends downwards; a plurality of blades which extend outwards in a radial shape are formed on the circumference surface of the wheel boss; the end edge of every blade near the wheel boss respectively forms a gap groove. Thus, the rotor can be used in heat dissipation fans and air current between every blade forms a better drainage effect through the design of the gap groove of the end edge of every blade for preventing unnecessary collision between the air current and inner parts of a heat dissipation fan for effectively eliminating noise generated during the operation of the heat dissipation fan when the rotor rotates.

Description

Can eliminate the radiation fan rotor of noise

Technical field

The utility model is a radiation fan rotor of eliminating noise about a kind of, refers to especially a kind ofly make the air-flow between each blade can form better drainage effect, by to eliminate the rotor design of unnecessary noise.

Background technique

General various electronics; in the units such as motor; it is inner as central processing unit (CPU); power supply unit ... etc. related electronic components; in the actual operation process, can produce high heat usually; if suitably do not get rid of; the easy Yin Gaore of this electrical assembly and influence its task performance then; so must install radiation fan thereon; in order to get rid of the high temperature that is produced when this electrical assembly operates; more smooth with the running of guaranteeing each electrical assembly; wherein, the side blown type radiation fan can be introduced ambient atmos, and by by each blade rotation start on the rotor with the gas side introduced to output; so more can not be subjected to the interference air-flow to reduce its air output, and can reach preferable radiating effect.

See also Figure 6 and Figure 7, existing side blown type radiation fan 30 mainly is to have one by base plate and the skeleton frame 31 that constituted of number side plate, its skeleton frame 31 tops are provided with the loam cake 32 with intake grill 321, these skeleton frame 31 inner containing grooves 33 that form, containing groove 33 sides reserve air port 331, and be provided with in the containing groove 33 by the yoke sheet, the stator pack 35 that member such as coil and circuit board is formed, articulate one on the stator pack and have some blades 341 and the inner rotor 34 that is provided with permanent magnet, by this, when stator pack 35 energization excitations, can drive rotor 34 rotation starts, enter in the containing groove 33 in order to introduce ambient air from intake grill 321, the rotation that sees through blade 341 is stirred, and air-flow is compressed in containing groove 33, promote exhaust outlet 331 outputs of gas by blade 341 side direction at last, to reach radiating effect from radiation fan 30.

The rotor 34 of aforementioned radiation fan can produce too much unnecessary noise unavoidably in operation, the factor that its noise forms generally includes: because rotor 34 each blade 341 are in the process of stirring air-flow, air-flow between each blade 341 distributes and has uneven situation unavoidably, and the design of existing rotor 34 also can't provide the air-flow between each blade 341 preferable drainage effect, cause each blade 341 can produce pressure reduction each other, and cause air-flow to form unnecessary collision with radiation fan 30 internals easily owing to pressure is uneven, and then make the too much noise of generation in radiation fan 30 operation.

The model utility content

The utility model provides a kind of " can eliminate the radiation fan rotor of noise ", uncommon by this design, when making this rotor be applied to radiation fan, can provide splendid drainage effect, the noise that is produced when operating with effective minimizing radiation fan is its main creation purpose.

For reaching aforementioned the utility model purpose, the technological means that the utility model used is to be to provide a kind of radiation fan rotor of eliminating noise, it mainly is to have a hollow wheel hub, the wheel hub underpart forms opening, the axostylus axostyle that this wheel hub inside is provided with permanent magnet and extends down, and the wheel hub side face forms some radial blades that extend outwardly, and the ora terminalis of each blade adjacent hub forms short slot respectively.

By designing by above-mentioned rotor structure, this rotor can cooperate members such as skeleton frame, stator pack to constitute a radiation fan, this rotor is when the inner rotation of skeleton frame start, can utilize the short slot design of its each blade ora terminalis, make the air-flow between each blade can form better drainage effect, make each blade force value each other comparatively average, and prevent that air-flow and radiation fan internals from producing unnecessary collision, with the effect of the noise that reaches effective elimination radiation fan running.

Description of drawings

Fig. 1 is the stereo appearance figure of the utility model rotor;

Fig. 2 is the plan view of the utility model rotor;

Fig. 3 is the sectional view of the utility model rotor;

Fig. 4 is the three-dimensional exploded view that the utility model rotor is used for radiation fan;

Fig. 5 is the constitutional diagram of analysing and observe that the utility model rotor is used for radiation fan;

Fig. 6 is the three-dimensional exploded view that existing rotor is used for radiation fan.

Fig. 7 is existing rotor plan view;

Fig. 8 A is the test chart when being applied to radiation fan for existing rotor, and wherein, y coordinate is a level of noise, and abscissa is the dynamic frequency of doing of blade; Fig. 8 B is the test chart of the utility model rotor 10 when being applied to radiation fan.

Embodiment

Relevant concrete enforcement design of the present utility model, see also Figure 1 and Figure 2, the radiation fan rotor 10 that the utility model can be eliminated noise mainly is to have a hollow wheel hub 11, its underpart is to form opening, these wheel hub 11 inside are provided with the not shown in the figures and axially extended axostylus axostyle 111 of permanent magnet down, and wheel hub 11 side faces form some radial blades 12 that extend outwardly, the ora terminalis of each blade 12 adjacent hub 10 forms short slot 13 respectively, as shown in Figure 3, these short slot 13 bottom lands can form inclined-plane 131, and short slot 13 can be positioned at the last ora terminalis or the following ora terminalis position of each blade 12, in preferred embodiment as shown in the figure, this short slot 13 is last ora terminalis 121 positions that are positioned at each blade 12.

Again, aforementioned short slot 13 mainly is the ora terminalis position that is positioned at each blade 12 adjacent hub 11 side face, so the stage casing of each blade 12 and the area that distal portion can contact with air-flow do not reduce, therefore, when this rotor 10 is applied to radiation fan, in rotary course, can't influence the function that it can stir air-flow.

When rotor 10 of the present utility model is applied to radiation fan, mainly be to be assembled in the skeleton frame, by with skeleton frame in the stator pack pivot joint that cooperatively interacts, cooperate the assembling of other member to constitute a radiation fan again, see also Fig. 4 and shown in Figure 5, these skeleton frame 20 inner formation sides reserve the containing groove 21 in air port 211, stator pack 23 is set in the containing groove 21, the axostylus axostyle 111 of this rotor 10 is to articulate mutually with stator pack 23, be connected to containing groove 21 tops with a loam cake 22 with intake grill 221 in addition, to constitute a cooling fan structure.

When reality is used, aforementioned radiation fan can be installed in the various electronics that operation can produce high heat, in the units such as motor, when stator pack 23 energization excitations of this radiation fan, promptly the permanent magnet with rotor 10 inside produces the magnetic mutual repulsion effect, in containing groove 21, rotate start in order to drive this rotor 10, by this, ambient air can be subjected to the rotation traction traction effect of rotor 10 each blade 12, and from intake grill 221 downward drainages to containing groove 21, see through the rotation toggle action of each blade 12 again, air-flow is compressed in containing groove 21, promote gas from exhaust outlet 211 outputs, in order to reach the radiating effect that to get rid of high temperature by blade 12 side direction at last.

The radiation fan rotor main characteristics that the utility model can be eliminated noise is: these rotor 10 each blades 12 form short slot 13 respectively in the ora terminalis position of adjacent hub 11, by design by this short slot 13, when this rotor 10 rotates start in the containing groove 21 of skeleton frame 20, when making its each blade 12 rotations stir air-flow in the containing groove 21 to compress, air-flow between each blade 12 can be by forming better drainage effect by short slot 13, and the inclined design that can utilize short slot 13 bottom lands makes its drainage effect better, by this, in the process of each blade 12 rotation start, its force value that is produced each other can be comparatively average, to prevent that air-flow and radiation fan internals from forming unnecessary collision, therefore, can not produce too much noise in the time of can making the radiation fan running.

Again, as shown in Figure 8, this Fig. 8 A is the test chart when being applied to radiation fan for existing rotor, wherein, y coordinate is a level of noise, and abscissa is the dynamic frequency of doing of blade, in addition Fig. 8 B is the test chart of the utility model rotor 10 when being applied to radiation fan, with Fig. 8 A and directly row comparison of Fig. 8 B, can know and find out the radiation fan of using the utility model rotor 10, the noise that is produced in the time of can effectively reducing running.

By above explanation as can be known, the utility model can be eliminated the radiation fan rotor of noise, and it mainly is to be applied in the radiation fan, by to prevent from the radiation fan operation to produce too much unnecessary noise, and can improve the quality of radiation fan, it really is a quite excellent design.

Claims

1, a kind of radiation fan rotor of eliminating noise, it is characterized in that, be to have a hollow wheel hub, the wheel hub underpart forms opening, the axostylus axostyle that this wheel hub inside is provided with permanent magnet and extends down, and the wheel hub side face forms some radial blades that extend outwardly, and the ora terminalis of each blade adjacent hub forms short slot respectively.

2, the radiation fan rotor of eliminating noise as claimed in claim 1 is characterized in that, described short slot is positioned at the last ora terminalis of each blade.

3, the radiation fan rotor of eliminating noise as claimed in claim 1 is characterized in that, described short slot is positioned at the following ora terminalis of each blade.

As claim 1, the 2 or 3 described radiation fan rotors of eliminating noise, it is characterized in that 4, described short slot bottom land forms the inclined-plane.