CN115111172A

CN115111172A - Novel amortization fan structure

Info

Publication number: CN115111172A
Application number: CN202210817609.2A
Authority: CN
Inventors: 赖进龙
Original assignee: Suzhou Pengzhun Technology Co ltd
Current assignee: Suzhou Pengzhun Technology Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-09-27

Abstract

The invention discloses a novel noise reduction fan structure, which comprises a bottom plate and a cover plate, wherein a placing cavity and an air outlet are arranged between the bottom plate and the cover plate, a fan is arranged in the placing cavity, and a cavity is arranged on the bottom plate close to the outlet; one side of the cavity close to the fan is provided with a first through hole. The cavity structure arranged on the bottom plate can ensure that the fan absorbs noise through the first through hole part during operation, so that the noise reduction effect is achieved.

Description

Novel amortization fan structure

Technical Field

The invention relates to the technical field of cooling fans, in particular to a novel noise reduction fan structure.

Background

The performance of the electronic product of one generation is improved compared with that of the other generation, the heat productivity of electronic components of the electronic product is greatly increased, and the heat dissipation fan is required to improve higher rotating speed efficiency for heat dissipation so as to avoid the influence of overhigh heat on the service life of the product, but the fan can generate higher noise while improving the rotating speed so as to influence the user experience, and more serious people can damage other components of a product system.

Disclosure of Invention

The invention aims to provide a novel noise reduction fan structure, and the cavity structure arranged on the bottom plate can ensure that the fan absorbs noise through the first through hole part during operation, so that the noise reduction effect is achieved.

In order to solve the technical problems, the invention provides a novel noise reduction fan structure which comprises a bottom plate and a cover plate, wherein a placing cavity and an air outlet are arranged between the bottom plate and the cover plate, a fan is arranged in the placing cavity, and a cavity is arranged on the bottom plate close to the outlet; one side of the cavity close to the fan is provided with a first through hole.

Furthermore, an air inlet is formed in the cover plate.

Further, the optimal diameter range of the first through hole is 0.2% -1% of the outer diameter of the fan impeller.

Furthermore, a partition plate is arranged in the cavity, and a second through hole is formed in the partition plate.

Further, one side of the cavity close to the fan is provided with a corrugated part.

Furthermore, the bottom plate and the cover plate are made of metal or plastic.

The invention has the beneficial effects that: the device utilizes the placing cavity arranged on the bottom plate to absorb noise generated by the fan during operation, and air enters the cavity through the first through hole during the operation of the fan, so that the noise caused by collision between the fan and the side wall is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of a cavity structure of the first embodiment of the present invention.

Fig. 3 is a schematic view of a cavity structure of a second embodiment of the present invention.

Fig. 4 is a schematic view of a cavity structure of a third embodiment of the present invention.

FIG. 5 is a graph of experimental data for the present invention.

The reference numbers in the figures illustrate: 1. a base plate; 2. a cover plate; 3. a placement chamber; 4. an air outlet; 5. a fan; 6. a cavity; 7. a first through hole; 8. a wrinkle part; 9. a partition plate; 10. a second through hole; 11. and an air inlet.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 4, an embodiment of a novel muffling fan 5 structure of the present invention includes a bottom plate 1 and a cover plate 2, wherein the cover plate 2 is provided with an air inlet 11, a placing cavity 3 and an air outlet 4 are disposed between the bottom plate 1 and the cover plate 2, the placing cavity 3 is provided with a fan 5, and the bottom plate 1 is provided with a cavity 6 near an outlet; the side of the cavity 6 close to the fan 5 is provided with a first through hole 7.

The distance between the fan 5 and the side wall of the base plate 1 of the prior fan 5 is constant, but the prior fan 5 pursues efficiency, and when the fan 5 is designed, the distance between the fan 5 and the side wall of the base plate 1 is larger and larger from the downwind direction, so that the air volume is increased, but the design has a disadvantage that a pressure concentration area is formed at the position where the distance between the fan 5 and the side wall is changed at the beginning, namely the position where the distance between the fan 5 and the side wall is minimum, and the pressure is increased when the fan 5 is started, so that the air and the side wall generate larger noise when the fan 5 runs;

the distance between fan 5 of this structure and the lateral wall of bottom plate 1 is also bigger and bigger from the downwind direction, but this device has set up a cavity 6 at the pressure concentration district, can be through the balanced internal and external pressure of first through-hole 7 when fan 5 starts, absorbs partial amount of wind and guarantees the effect of making an uproar, the effect data picture is seen in fig. 5

The cavity 6 is provided with a corrugated part 8 at one side close to the fan 5, so that the noise reduction effect is further enhanced.

The optimum diameter range of the first through hole 7 is 0.2% -1% of the outer diameter of the impeller of the fan 5.

Be provided with baffle 9 in the cavity 6, be provided with second through-hole 10 on the baffle 9, the shape of second through-hole 10 is any special-shaped hole to hole number more than or equal to 1 can, for example common circular port or long circular port, can further fall the noise to the wind that gets into and place chamber 3.

The bottom plate 1 and the cover plate 2 are made of metal or plastic.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims

1. A novel noise reduction fan structure is characterized by comprising a bottom plate and a cover plate, wherein a placing cavity and an air outlet are arranged between the bottom plate and the cover plate, a fan is arranged in the placing cavity, and a cavity is arranged on the bottom plate close to the outlet;

one side of the cavity close to the fan is provided with a first through hole.

2. The new muffling fan structure of claim 1, wherein the cover plate has an air inlet.

3. The novel muffling fan structure of claim 1, wherein the optimal diameter range of the first through hole is 0.2% -1% of the outer diameter of the fan impeller.

4. The novel muffling fan structure of claim 1, wherein a partition is disposed within the cavity, and wherein the partition is provided with a second through hole.

5. The novel muffling fan structure of claim 1, wherein a side of the cavity near the fan is provided with a corrugated portion.

6. The new muffling fan structure of claim 1, wherein the bottom plate and the cover plate are made of metal or plastic.