Fan structure

Abstract

The utility model relates to a fan structure which comprises a shell and a fan body installed in the shell, an air outlet is formed in the bottom of the shell, the shell comprises a front cover and a rear cover, the front cover is connected with the rear cover through a first bolt, and a sound insulation pad is arranged between the front cover and the rear cover. A first protection pad, sound absorption cotton and a second protection pad are sequentially arranged on the inner wall of the front cover and the inner wall of the rear cover, a plurality of sound absorption grooves are formed in the sound absorption cotton, the front cover and the rear cover are separated through the sound insulation pad, noise generated by mutual collision of the front cover and the rear cover in the operation process is prevented, the noise is absorbed through the sound absorption cotton, and the noise is prevented from being damaged. And the first protective pad and the second protective pad can further reduce noise, so that the production of noise can be effectively reduced, and the production environment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan structure. Background Art

[0002] During the PCB manufacturing process, especially during the soldering of surface mount components (SMD), moisture may remain on the PCB. If this moisture is not removed, bubbles will be generated during the soldering process, resulting in poor soldering or damage to the PCB. Therefore, before soldering, the moisture on the PCB needs to be thoroughly blown dry.

[0003] The fan is usually equipped with a special wind knife that can generate a strong and uniform airflow, which can quickly dry the moisture on the surface of the circuit board. The design of the wind knife can reduce the turbulence of the airflow, thereby providing a stable and continuous drying effect. In addition, the high-pressure airflow generated by the high-speed fan can also help remove dust and other tiny particles on the circuit board, further improving the cleanliness of the circuit board; common fans used for drying usually do not have a noise reduction structure. During operation, the shells collide with each other to generate a lot of noise, and the noise generated during the operation of the fan body is also relatively large, resulting in a poor production environment. Utility Model Content

[0004] The purpose of the utility model is to design a fan structure to solve the technical problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fan structure, comprising a shell and a fan body installed inside the shell, the bottom of the shell is provided with an air outlet, the shell comprises a front cover and a rear cover, the front cover is connected to the rear cover by a first bolt, a sound insulation pad is provided between the front cover and the rear cover, the inner walls of the front cover and the rear cover are provided with a first protective pad, sound-absorbing cotton and a second protective pad in sequence, and a plurality of sound-absorbing grooves are provided on the sound-absorbing cotton.

[0006] Furthermore, the inner walls of the front cover and the rear cover are both provided with protrusions, and the outer wall of the first protective pad is provided with grooves adapted to the protrusions.

[0007] Furthermore, the inner wall circumferential array of the first protective pad has a plurality of first mounting holes, and the outer wall circumferential array of the sound-absorbing cotton has a plurality of first positioning shafts adapted to the first mounting holes.

[0008] Furthermore, the inner wall circumferential array of the sound-absorbing cotton has a plurality of second mounting holes, and the outer wall circumferential array of the second protective pad has a plurality of second positioning shafts adapted to the second mounting holes.

[0009] Furthermore, a wind shield is rotatably connected to the air outlet.

[0010] Furthermore, the outlet ends of the front cover and the rear cover are connected with flanges.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model separates the front cover and the rear cover by a sound insulation pad to prevent the noise generated by the front cover and the rear cover colliding with each other during operation, and absorbs the noise generated by the fan body or the front cover and the rear cover by sound-absorbing cotton. The first protective pad and the second protective pad can further reduce noise. Therefore, the utility model can effectively reduce the generation of noise and improve the production environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a cross-sectional view of the utility model;

[0014] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0015] The names of the components marked in the figure are as follows: 1. Shell; 101. Front cover; 102. Rear cover; 2. Fan body; 201. Turntable; 202. Blades; 3. Sound insulation pad; 4. First protective pad; 5. Sound-absorbing cotton; 6. Second protective pad; 7. Protrusion; 8. Wind shield; 9. Flange. DETAILED DESCRIPTION

[0016] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0017] Example: Please refer to Figure 1-3A fan structure includes a shell 1 and a fan body 2 installed inside the shell 1. In order to improve the efficiency of electric energy use and reduce the cost of electricity, the fan body 2 adopts a high-speed fan. Specifically, the fan body 2 includes an annular turntable 201, and a plurality of blades 202 are arranged in a circular array on the turntable 201. The blades 202 adopt arc plates, and the arc plates are bent inward. The surface area of ​​the blades 202 can be increased by the design of the arc plates, so that the fan body 2 can generate a strong and uniform airflow when it is running. This airflow can quickly dry the moisture on the surface of the circuit board; in addition, the high-pressure airflow generated by the high-speed fan can also remove dust and other tiny particles on the circuit board, further improving the cleanliness of the circuit board; the shell 1 includes a front cover 101 and a rear cover 102 The front cover 101 is connected to the rear cover 102 by a first bolt, and a sound insulation pad 3 is arranged between the front cover 101 and the rear cover 102. The sound insulation pad 3 is made of glass fiber. The sound insulation pad 3 separates the front cover 101 and the rear cover 102, and the sound insulation pad 3 is sealed and connected to the front cover 101 and the rear cover 102 respectively, which can effectively reduce noise pollution; the inner walls of the front cover 101 and the rear cover 102 are provided with a first protective pad 4, sound-absorbing cotton 5 and a second protective pad 6 in sequence, and the first protective pad 4, the sound-absorbing cotton 5 and the second protective pad 6 completely cover the front cover 101 and the rear cover 102, the first protective pad 4 can prevent water from penetrating from the inner wall of the front cover 101 or the rear cover 102 to the sound-absorbing cotton 5, and the second protective pad 6 plays a role of dust and moisture prevention for the sound-absorbing cotton 5, preventing the sound-absorbing cotton 5 from being Pollution affects its sound absorption effect; the first protective pad 4 and the second protective pad 6 can further play a sound insulation effect and further reduce the generation of noise; a number of sound absorption grooves are provided on the sound-absorbing cotton 5, and the surface area of ​​the sound-absorbing cotton 5 is increased by the sound absorption grooves, thereby further improving the sound absorption effect of the sound-absorbing cotton 5; the inner walls of the front cover 101 and the rear cover 102 are both provided with an integrally formed convex body 7, and the outer wall of the first protective pad 4 is provided with a groove adapted to the convex body 7, and the first protective pad 4 is quickly installed by the cooperation between the convex body 7 and the groove, and the first protective pad 4 is connected to the front cover 101 or the rear cover 102 by the second bolt, so as to further fix the first protective pad 4; limiting plates are provided at both ends of the convex body 7, and the first protective pad 4 is limited by the limiting plates to prevent the first protective pad 4 from being dislocated during operation The protective plate is displaced; the inner wall circumferential array of the first protective pad 4 has a plurality of first mounting holes, the outer wall circumferential array of the sound-absorbing cotton 5 has a plurality of first positioning shafts adapted to the first mounting holes, the first positioning shaft on the sound-absorbing cotton 5 is inserted into the first mounting hole, so that it is fixed on the first protective pad 4, and the sound-absorbing cotton 5 is quickly installed; the inner wall circumferential array of the sound-absorbing cotton 5 has a plurality of second mounting holes, the outer wall circumferential array of the second protective pad 6 has a plurality of second positioning shafts adapted to the second mounting holes, the second positioning shaft on the second protective plate is inserted into the second mounting hole, so that it is fixed on the sound-absorbing cotton 5, and the second protective plate is quickly installed; an air outlet is provided at the bottom of the shell 1, and a wind shield 8 is rotatably connected to the air outlet, and the air volume of the air outlet is controlled by the wind shield 8;The outlet ends of the front cover 101 and the rear cover 102 are connected with flanges 9, which are conveniently connected to the external air duct. ;

[0018] The working principle of this embodiment: when in use, the first protective pad 4, the sound-absorbing cotton 5 and the second protective pad 6 are respectively installed on the inner walls of the front cover 101 and the rear cover 102, and the first protective pad 4 is further fixed by the second bolt. The sound insulation pad 3 is installed between the front cover 101 and the rear cover 102, and the front cover 101 and the rear cover 102 are fixedly connected by the first bolt. When the fan body 2 is running, the noise is absorbed by the sound-absorbing cotton 5, and the noise is further reduced by the first protective pad 4 and the second protective pad 6. The sound insulation pad 3 can reduce the generation of noise, and the sound absorption grooves on the sound-absorbing cotton 5 can effectively improve the sound absorption effect of the sound-absorbing cotton 5. Therefore, the utility model can effectively reduce the generation of noise and improve the production environment.

[0019] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fan structure, comprising a housing (1) and a fan body (2) installed inside the housing (1), wherein an air outlet is provided at the bottom of the housing (1), characterized in that: The shell (1) comprises a front cover (101) and a rear cover (102); the front cover (101) is connected to the rear cover (102) by a first bolt; a sound insulation pad (3) is provided between the front cover (101) and the rear cover (102); the inner walls of the front cover (101) and the rear cover (102) are provided with a first protective pad (4), sound absorbing cotton (5) and a second protective pad (6) in sequence; and the sound absorbing cotton (5) is provided with a plurality of sound absorbing grooves.

2. The fan structure according to claim 1, characterized in that: The inner walls of the front cover (101) and the rear cover (102) are both provided with a convex body (7), and the outer wall of the first protective pad (4) is provided with a groove adapted to the convex body (7).

3. The fan structure according to claim 1, characterized in that: The inner wall circumferential array of the first protective pad (4) has a plurality of first mounting holes, and the outer wall circumferential array of the sound-absorbing cotton (5) has a plurality of first positioning shafts adapted to the first mounting holes.

4. The fan structure according to claim 1, characterized in that: The inner wall circumferential array of the sound-absorbing cotton (5) has a plurality of second mounting holes, and the outer wall circumferential array of the second protective pad (6) has a plurality of second positioning shafts adapted to the second mounting holes.

5. The fan structure according to claim 1, characterized in that: A wind shield (8) is rotatably connected to the air outlet.

6. The fan structure according to claim 1, characterized in that: The outlet ends of the front cover (101) and the rear cover (102) are connected with flanges (9).

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