CN2697716Y

CN2697716Y - Blade distributing structure for centrifugal type radiation fan of office facilities

Info

Publication number: CN2697716Y
Application number: CNU2004200496808U
Authority: CN
Inventors: 古进钦; 施铭铨
Original assignee: Forcecon Technology Co Ltd
Current assignee: Forcecon Technology Co Ltd
Priority date: 2004-04-27
Filing date: 2004-04-27
Publication date: 2005-05-04
Anticipated expiration: 2014-04-27

Abstract

The utility model provides a blade distributing structure for the centrifugal type radiation fan of office facilities, comprising a central rotary seat portion and a plurality of centrifugal type blades arranged around the central rotary seat portion at intervals; the blade distributing structure for the centrifugal type radiation fan of office facilities is characterized in that: the blades are the non-equidistant configuration patterns, however, the non-equidistant configuration way of the integral blade can reach the dynamic balance when rotating; hereby, and the practical efficiency of reducing the rotating noise of the blade can be achieved.

Description

The centrifugal radiator fan blade arrangement of business machine structure

Technical field

The structure of the relevant a kind of business machine radiator fan of the utility model.

Technical background

The development of information product is now maked rapid progress, reached the stage of comprehensive universalness, make more and more higher to the requirement of product, especially aspect the requiring of sound, enter more strictly requirement from the requirement of average noise to sound quality, and office automation business machine (as computer or the like) be provided with more radiator fan with hot-air by getting rid of in the body, wherein set flabellum is perpendicular to the state that is on the impeller along the equidistant arrangement of circumference do on the radiator fan, and its rotation of mat is so that outside the hot-air discharge body; But still there is following problem in this kind conventional construction when reality is used:

Because the flabellum of known radiator fan is the kenel that is spacedly distributed, the frequency of its mechanical vibration is products of the number of blade and rotating speed, the energy of sound has the phenomenon of stack in this frequency, cause the outstanding acoustic energy of facing frequency mutually of acoustic energy of this frequency, so form discordant sound, that is resonance noise, this resonance easily impacts for electronic component serviceable life; When the acoustic energy of this frequency was higher than the acoustic energy 7dB (decibel) that faces frequency mutually, people's ear just can be experienced discordant sound (ISO7779 defines to some extent and illustrates the surging of sound), remained to be improved to progress greatly in fact again.

Therefore, at the existing problem of the cooling fan structure of above-mentioned known business machine, how to develop the new structure that has more desirable practicality, the dealer that remains in fact to be correlated with is improved breakthrough again.

Summary of the invention

The purpose of this utility model is the structure that a kind of business machine radiator fan will be provided, and it mainly is at known business machine radiator fan in use, because of the flabellum running causes the problem of irritating noise to be improved breakthrough.

The purpose of this utility model is achieved in that

A kind of structure of business machine radiator fan is provided, comprises that a portion is revolved in central authorities and spaced ring is located at the some centrifugal blade that portion's periphery is revolved in these central authorities; It is characterized in that: these blades are equidistantly not dispose kenel, but the equidistant configuration mode of integral blade still must be reached the mobile equilibrium when rotating.

Wherein, these blades be can be the angle symmetrical expression equidistantly do not dispose kenel, also can be that the toroidal shape block is evenly distributed formula equidistantly do not dispose kenel, also or the configuration kenel of asymmetric, reach mobile equilibrium by counterweight, loss of weight structural design again in asymmetric place.

The beneficial effect of the utility model contrast prior art is: mainly be to be set as the not structure kenel of configuration design equidistantly by this fan blade, use the sound frequency that the blades of different spacing space is produced when rotated and can produce the effect of repealing by implication, noise content when advancing with the reduction fan running reaches the practical improvement that promotes product quality.

Description of drawings

Fig. 1 is the stereographic map of the utility model first embodiment.

Fig. 2 is the top plan view of the utility model first embodiment.

Fig. 3 is the top plan view of the utility model second embodiment.

Fig. 4 is the top plan view of the utility model the 3rd embodiment.

Fig. 5 is the top plan view of the utility model the 4th embodiment.

Fig. 6 is the test result synoptic diagram of the utility model frequency and decibel value corresponding relation.

Fig. 7 is the test result synoptic diagram of conventional construction frequency and decibel value corresponding relation.

The piece number explanation:

Radiator fan---A1, A2, A3, A4 (being different types)

A portion is revolved in central authorities---and 10

Blade---20

Embodiment

Further understand and understanding for having the purpose of this utility model, feature and effect, conjunction with figs. describes in detail as the back now:

At first, cooperate and consult shown in Fig. 1,2, be the preferred embodiment of the centrifugal radiator fan blade arrangement of the utility model business machine structure, this radiator fan A1 includes that a portion 10 is revolved in central authorities and spaced ring is located at the some centrifugal blade 20 that a portion 10 peripheries are revolved in these central authorities; It is characterized in that: these blades 20 are equidistantly not dispose kenel, but the dynamic balance state of the equidistant configuration mode of integral blade still must reach whole fan rotation the time.

Wherein, as shown in Figure 1, 2, these blades 20 can be the angle symmetrical expression equidistantly do not dispose kenel; This as shown in Figure 2, its a, b, c indicated is to form one group of equidistant blade arrangement unit (a＞c＞b), in view of the above, whole group radiator fan A1 has four groups of angles configuration of cells kenel of (being 180 ° of relativenesses) symmetrically.

Wherein, as shown in Figure 3, these blades 20 can also be the toroidal shape block be evenly distributed formula equidistantly do not dispose kenel; This is to form one group of not equidistant blade arrangement unit in spacing that its d indicated as shown in Figure 3, and in view of the above, whole group radiator fan A2 has the configuration of cells kenel person that five groups of angles are divided equally.

Wherein, the not configuration equidistantly of these blades 20 also can be the configuration kenel (figure does not paint) of asymmetric, reaches mobile equilibrium by counterweight (as the hyperplasia configuration), loss of weight (as expecting, establish the hole steathily) structural design again in asymmetric place.

Again wherein, it is to can be applicable on the centrifugal cooling fan structure of different styles and reach equal effect that the utility model blade 20 is the structure feature that does not equidistantly dispose kenel, is the top plan view of the utility model structure applications in other two kinds of centrifugal radiator fan A3, A4 shown in Fig. 4,5.

Multiple shown in Fig. 6,7, it is the actual test result signal of the utility model and known centrifugal radiator fan in frequency and dB (decibel) value, the utility model sound wave superposition phenomenon obviously has on average, phenomenon eases up, that is, its different rotating speeds frequency (Hz) is worth formed dB (decibel) value crest and does not rise because of flabellum number and rotating speed improve to have obviously, but is average low crest tendency (being the frequency effect of cancelling out each other).

It is true as follows that the utility model effect is promoted:

1. provide a kind of flabellum on circumference, to be arranged in the innovation structure kenel design of not equi-spaced apart configuration, really meet novel novelty of patent important document for industry head sees with radiator fan.

2. special by this structure-improved design, use the sound frequency that the blades of different spacing space is produced and to produce the effect of cancelling out each other when rotation, noise content when advancing with the reduction fan running reaches the practical improvement that promotes product quality and create the high-quality operating environment.

Claims

1, the centrifugal radiator fan blade arrangement of a kind of business machine structure comprises that one has central authorities to revolve a portion and spaced ring is located at a plurality of centrifugal blade that portion's periphery is revolved in these central authorities; It is characterized in that: these blades are equidistantly not dispose kenel, but the equidistant configuration mode of integral blade still must be reached the mobile equilibrium when rotating.

2, according to the centrifugal radiator fan blade arrangement of the described business machine of claim 1 structure, it is characterized in that: these blades be the angle symmetrical expression equidistantly do not dispose kenel.

3, according to the centrifugal radiator fan blade arrangement of the described business machine of claim 1 structure, it is characterized in that: these blades can also be the toroidal shape block be evenly distributed formula equidistantly do not dispose kenel.

4, according to the centrifugal radiator fan blade arrangement of the described business machine of claim 1 structure, it is characterized in that: the not configuration equidistantly of these blades can also be the configuration kenel of asymmetric, reaches mobile equilibrium by counterweight, loss of weight structural design again in asymmetric place.