High sealing sound attenuation fan housing

Abstract

The utility model discloses a high sealing sound attenuation fan casing, including air inlet air duct, front cover and front side plate still include first air bag body, first air bag body sets up at the outside of casing, and bottom is connected with casing, be provided with circulating air duct on first air bag body, and the air inlet of circulating air duct is connected with fan air outlet, and the other end air outlet of circulating air duct is on first air bag body, the casing still includes second air bag body, and second air bag body sets up between front cover and front side plate, the effect of first air bag body of the application is used for all -round sealing to fan, reduces the noise of fan, and second air bag body is used for sealing the gap between the front cover and front side plate of fan, and the strong sealing of fan is realized to double -sealed structure, and the noise of fan when working is also reduced.

Description

Technical Field

[0001] This utility model belongs to the field of fans, specifically relating to a high-sealing, noise-reducing fan housing. Background Technology

[0002] Fans are key components in industrial ventilation, air conditioning systems, and cooling of various equipment. The noise they generate during operation and the resulting control issues have always been significant challenges affecting working environment comfort and the application range of the equipment. Traditional fan casings are mostly constructed from welded or bolted metal sheets. Even with ordinary gaskets at the joints, it's difficult to completely eliminate the tiny gaps caused by vibration and manufacturing tolerances. This results in significant aerodynamic noise when high-speed airflow passes through these gaps, and may even lead to leaks. Furthermore, the fan itself, especially the motor, generates a large amount of heat; poor heat dissipation will affect its lifespan and efficiency. Current noise reduction methods, such as adding sound insulation cotton or designing complex silencers, often suffer from structural complexity, high cost, potential impact on heat dissipation, or increased maintenance difficulty. Utility Model Content

[0003] To achieve the above objectives, the technical solution of this utility model is as follows: A high-sealing silencer fan housing includes an air inlet duct, a front cover plate and a front side plate, and also includes a first airbag body. The first airbag body is disposed on the outside of the housing and connected to the housing at the bottom. A circulation duct is provided on the first airbag body. The air inlet of the circulation duct is connected to the air outlet of the fan. The air outlet at the other end of the circulation duct is on the first airbag body. The housing also includes a second airbag body, which is disposed between the front cover plate and the front side plate.

[0004] Based on the above technical features, the function of the first airbag is to seal the fan in all directions and reduce the fan noise. The bottom of the first airbag is connected to the base of the fan. The shape of the first airbag is adapted to the overall fan. An elastic clip, which can be a rubber part, is provided at the bottom of the fan. When the bottom of the first airbag (which can be made of a material with high hardness) is inserted into the elastic clip for fixation, the first airbag is installed and fixed to the fan in this way. Other existing commonly used methods can also be used.

[0005] Preferably, a groove is provided between the front cover plate and the front side plate, and the second airbag is disposed in the groove. The groove is a U-shaped groove, and the second airbag contacts the front cover plate or the front side plate at the top of the U-shaped groove.

[0006] Based on the above technical features, the second airbag is set in the groove for sealing between the front cover and the front side plate. Compared with the existing sealing gasket, the airbag has better sealing performance. At the same time, the design of the sealing gasket is also added. The sealing gasket is set above the airbag, so the sealing performance is better under the dual action of the sealing gasket and the airbag.

[0007] Preferably, the second air bladder includes a plurality of small air chambers connected in series, with each small air chamber being independent of the others.

[0008] Based on the above technical features, the purpose of setting multiple small air chambers is that each individual chamber works, and when the gas in one chamber changes, it will not affect the operation of other chambers.

[0009] Preferably, the interior of the second airbag body is further provided with a sandwich layer, which is located near the surface of the second airbag, and the sandwich layer contains a phase change material.

[0010] Based on the above technical features, a phase change material is set in the interlayer. The phase change material absorbs heat when heated, which can protect the capsule itself and increase its service life.

[0011] Preferably, the circulating air duct includes multiple circulating micro-air ducts, which are distributed around the first airbag body.

[0012] Based on the above technical features, the air circulating in the micro-circulation duct comes from the air discharged by the fan itself, which cools the fan itself, and the circulated air is discharged from the other end of the circulation duct.

[0013] Preferably, the groove is further provided with an anti-misalignment protrusion structure, which is evenly distributed on the inner wall of the groove.

[0014] Based on the above technical features, the anti-misalignment protrusion structure can limit the position of the airbag and prevent the airbag from moving and causing unstable sealing.

[0015] Preferably, a sealing filler is provided between the small air chambers.

[0016] Based on the above technical features, the small air chambers connected in series have pores, and a sealing filler is provided to fill the pores and improve the sealing performance.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: the first airbag body set in this application is used to seal the fan in all directions and reduce the noise of the fan; the second airbag body is used to seal the gap between the front cover plate and the front side plate of the fan. The double sealing structure realizes the strong sealing of the fan and also reduces the noise of the fan when it is working. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the fan casing described in this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This utility model Figure 1Enlarged view at point B in the middle; Figure 4 This is a schematic diagram of the groove structure in this utility model; Figure 5 This is a schematic diagram of the sandwich structure in this utility model.

[0019] List of symbols in the attached diagram: 1-Fan outlet, 2-Front cover, 3-Front side plate, 4-First airbag, 5-Casing, 6-Sealing filler, 7-Circulating air duct, 8-Air inlet, 9-Second airbag, 10-Groove, 11-Small air chamber, 12-Layer, 13-Anti-misalignment protrusion structure. Detailed Implementation

[0020] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0021] Example: Figures 1 to 5 As shown, a high-sealing silencer fan housing includes a fan outlet 1, a front cover plate 2, and a front side plate 3. It also includes a first airbag 4, which is disposed on the outside of the housing and connected to the housing at the bottom. A circulation duct 7 is provided on the first airbag 4. The air inlet 8 of the circulation duct 7 is connected to the fan outlet 1. The other end of the circulation duct 7 has an air outlet on the first airbag 4. The housing also includes a second airbag 9, which is disposed between the front cover plate 2 and the front side plate 3. The function of the first airbag 4 is to seal the fan in all directions and reduce the noise of the fan. The bottom of the first airbag 4 is connected to the base of the fan. The shape of the first airbag 4 is adapted to the overall shape of the fan. An elastic clip, which can be a rubber part, is provided at the bottom of the fan. When the bottom of the first airbag 4 (which can be made of a material with high hardness) is inserted into the elastic clip for fixation, the first airbag 4 is installed and fixed to the fan in this way. Other existing and commonly used methods can also be used. The above method is only an example of this embodiment.

[0022] Furthermore, a groove 10 is provided between the front cover plate 2 and the front side plate 3, and the second airbag 9 is disposed within the groove 10. The groove 10 is a U-shaped groove, and the second airbag 9 contacts the front cover plate 2 or the front side plate 3 at the top of the U-shaped groove. The second airbag 9 is disposed within the groove 10 for sealing between the front cover plate 2 and the front side plate 3. Compared with existing sealing gaskets, the airbag has better sealing performance. At the same time, the design of the sealing gasket is also added, and the sealing gasket is disposed above the airbag. Thus, the sealing performance is better under the dual action of the sealing gasket and the airbag.

[0023] Furthermore, the second airbag 9 includes a plurality of small air chambers 11 connected in series, and the small air chambers 11 are independent of each other. The purpose of setting multiple small air chambers 11 is that each individual air chamber works, and when the gas in one air chamber changes, it will not affect the operation of the other air chambers.

[0024] Furthermore, the second airbag body 9 is also provided with a sandwich layer 12, which is located near the surface of the second airbag. The sandwich layer 12 contains a phase change material. The phase change material in the sandwich layer 12 absorbs heat when heated, which can protect the airbag body itself and increase its service life.

[0025] Furthermore, the circulating air duct 7 includes multiple circulating micro-air ducts, which are distributed around the first airbag body 4. The circulating micro-air ducts circulate the air discharged from the fan itself to cool the fan, and the circulated air is discharged from the other end of the circulating air duct 7.

[0026] Furthermore, the groove 10 is also provided with an anti-misalignment protrusion structure 13, which is evenly distributed on the inner wall of the groove 10. The anti-misalignment protrusion structure 13 can limit the position of the airbag and prevent the airbag from moving and causing unstable sealing.

[0027] Furthermore, a sealing filler 6 is provided between the small air chambers 11. The small air chambers 11 connected in series have pores, and the sealing filler 6 is provided to fill the pores and improve the sealing performance.

[0028] It should be noted that the above content merely illustrates the technical concept of this utility model and cannot be used to limit the scope of protection of this utility model. For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and all such improvements and modifications fall within the scope of protection of the claims of this utility model.

Claims

1. A high-sealing sound attenuation fan housing comprising an air inlet duct, a front cover plate (2) and a front side plate (3), characterized in that, It also includes a first airbag (4), which is located on the outside of the housing and connected to the bottom of the housing. A circulating air duct (7) is provided on the first airbag (4). The air inlet (8) of the circulating air duct (7) is connected to the air outlet (1) of the fan. The air outlet at the other end of the circulating air duct (7) is on the first airbag (4). The housing also includes a second airbag (9), which is located between the front cover plate (2) and the front side plate (3).

2. A high-seal acoustic fan enclosure according to claim 1, wherein, A groove (10) is provided between the front cover plate (2) and the front side plate (3), and the second airbag body (9) is disposed in the groove (10). The groove (10) is a U-shaped groove, and the second airbag body (9) contacts the front cover plate (2) or the front side plate (3) at the top of the U-shaped groove.

3. The high containment, sound attenuating fan enclosure of claim 1, wherein, The second air bladder (9) includes a plurality of small air chamber bladders (11) connected in series, and the small air chamber bladders (11) are independent of each other.

4. The high containment, sound attenuating fan enclosure of claim 1, wherein, The second airbag body (9) is also provided with a sandwich layer (12) inside. The sandwich layer (12) is located near the surface of the second airbag and is provided with a phase change material inside the sandwich layer (12).

5. The high containment, sound attenuating fan enclosure of claim 1, wherein, The circulating air duct (7) includes multiple circulating micro-air ducts, which are distributed around the first airbag body (4).

6. The high containment, sound attenuating fan enclosure of claim 2, wherein, The groove (10) is also provided with an anti-misalignment protrusion structure (13), which is evenly distributed on the inner wall of the groove (10).

7. The high containment, sound attenuating fan enclosure of claim 3, wherein, A sealing filler (6) is provided between the small air chambers (11).

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