Housing of fan

Abstract

The utility model discloses a casing of a fan, which relates to the technical field of fans, and is characterized in that the casing comprises a casing, a sound absorption structure is arranged on the casing, the sound absorption structure comprises a housing, a plurality of supports are arranged in the housing, sound absorption cotton is inserted between the supports and the inner side wall of the housing, and a connecting flange is arranged on the housing. A sealing cover used for abutting against the sound absorption cotton is detachably connected to the connecting flange. When the shell of the fan needs to be provided with the sound-absorbing cotton, the sound-absorbing cotton can be rolled into a barrel shape, then the barrel shape is inserted between the support and the inner side wall of the shell and is clamped and fixed through the support and the inner side wall of the shell, then the sealing cover is fixedly installed on the connecting flange, and the sound-absorbing cotton can be prevented from falling off due to the fact that the sealing cover abuts against the sound-absorbing cotton. According to the sound absorption structure, the sound absorption cotton is arranged, so that the installation firmness of the sound absorption cotton in the housing is guaranteed, the sound absorption structure has a good sound absorption effect through the arrangement of the sound absorption cotton, and therefore the machine shell has the noise reduction function.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, specifically to a wind turbine casing. Background Technology

[0002] A fan is a machine that uses input mechanical energy to increase gas pressure and discharge gas; it is a type of driven fluid machinery.

[0003] Currently, a typical fan consists of a casing, inside which a motor is installed, and an impeller is connected to the motor's output end. During operation, the high-speed rotation of the impeller generates friction with the air, causing airflow shearing and pressure fluctuations, which in turn produce noise. Furthermore, the fan casing is a continuous cylindrical structure, resulting in significant noise levels.

[0004] Therefore, existing fan casings typically include silencers. These silencers are generally cylindrical and fixed to the fan's air inlet. Inside, they are lined with sound-absorbing cotton, usually made of fibrous material with an open-pore structure and a relatively loose texture. When sound waves encounter the cotton, the energy is absorbed by the material's pores, gradually converting into heat and dissipating, thus achieving sound absorption and noise reduction. However, existing sound-absorbing cotton is fixed inside the silencer by adhesive and cannot be disassembled. This makes it prone to aging and deformation after long-term use, affecting the sound absorption and noise reduction effect and resulting in poor durability. Utility Model Content

[0005] The purpose of this utility model is to provide a fan casing in order to solve the above-mentioned problems.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a fan housing, including a housing, wherein a sound-absorbing structure is provided on the housing, the sound-absorbing structure includes a cover, wherein a plurality of supports are provided inside the cover, and sound-absorbing cotton is inserted between the supports and the inner sidewall of the cover, and a connecting flange is provided on the cover, wherein a cover for contacting the sound-absorbing cotton is detachably connected to the connecting flange.

[0007] As a further feature of this invention, the cover includes a cover plate and an insert for embedding inside the bracket, wherein the combined height of the insert and the sound-absorbing cotton is greater than the length of the bracket.

[0008] As a further feature of this utility model, the connecting flange is provided with a plurality of threaded rods, and the cover plate is provided with a plurality of through holes for the threaded rods to pass through, and the threaded rods are threadedly connected to threaded components.

[0009] As a further feature of this utility model, the threaded component includes a threaded sleeve, the inner sidewall of which has an internal thread structure, and the sidewall of the threaded rod has an external thread structure that matches the internal thread structure.

[0010] As a further feature of this invention, an elastic washer is provided at the bottom of the threaded sleeve, and a plurality of grooves for embedding the elastic washer are provided on the cover plate.

[0011] As a further feature of this invention, the side wall of the threaded sleeve is provided with several anti-slip grooves.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] When sound-absorbing cotton needs to be installed, this utility model can roll the sound-absorbing cotton into a tube shape and insert it between the bracket and the inner wall of the cover. The bracket and the inner wall of the cover will clamp and fix it. Then, the cover will be fixedly installed on the connecting flange. The cover and the sound-absorbing cotton will abut against each other to prevent the sound-absorbing cotton from falling out, thus ensuring the sound-absorbing cotton is firmly installed inside the cover. The sound-absorbing cotton will make the sound-absorbing structure have a good sound absorption effect, thus enabling the casing to have a noise reduction function. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the sound-absorbing structure in this utility model;

[0016] Figure 3 for Figure 2 A magnified structural diagram of point A in the middle.

[0017] Reference numerals: 1. Housing; 2. Cover; 3. Bracket; 4. Sound-absorbing cotton; 5. Connecting flange; 6. Cover plate; 7. Insert; 8. Threaded rod; 9. Perforation; 10. Threaded sleeve; 11. Elastic washer; 12. Groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 , Figure 2As shown, a fan casing includes a casing 1, on which a sound-absorbing structure is provided. The sound-absorbing structure includes a cover 2, inside which several supports 3 are provided, and sound-absorbing cotton 4 is inserted between the supports 3 and the inner wall of the cover 2. The sound-absorbing cotton 4 is strip-shaped. A connecting flange 5 is provided on the cover 2, and a cover for contacting the sound-absorbing cotton 4 is detachably connected to the connecting flange 5. When the sound-absorbing cotton 4 needs to be installed, the sound-absorbing cotton 4 can be rolled into a tube and then inserted between the supports 3 and the inner wall of the cover 2. It is clamped and fixed by the supports 3 and the inner wall of the cover 2. Then the cover is fixedly installed on the connecting flange 5. By the cover contacting the sound-absorbing cotton 4, the sound-absorbing cotton 4 can be prevented from falling out, thereby ensuring the installation firmness of the sound-absorbing cotton 4 inside the cover 2. The setting of the sound-absorbing cotton 4 makes the sound-absorbing structure have a good sound absorption effect, thereby giving the casing 1 a noise reduction function.

[0020] Please see Figures 1-3 As shown, the cover includes a cover plate 6 and an insert 7 for embedding inside the bracket 3. The combined height of the insert 7 and the sound-absorbing cotton 4 is greater than the length of the bracket 3. When the insert 7 is embedded inside the bracket 3 and comes into contact with the sound-absorbing cotton 4, it will compress the sound-absorbing cotton 4, thereby pressing the sound-absorbing cotton 4 firmly onto the bracket 3, improving the installation firmness of the sound-absorbing cotton 4 inside the cover 2. Several threaded rods 8 are provided on the connecting flange 5, and several through holes 9 are provided on the cover plate 6 for the threaded rods 8 to pass through. Threaded parts are threadedly connected to the threaded rods 8. When installing the cover, the cover plate 6 can be fitted with the connecting flange 5 so that the threaded rods 8 pass through the through holes 9. Then, the threaded parts can be threaded onto the threaded rods 8 until the cover plate 6 is pressed tightly onto the connecting flange 5, thus realizing the installation of the cover on the connecting flange 5. When it is necessary to remove the cover, simply unscrew the threaded parts from the threaded rods 8. The operation is relatively convenient. The threaded parts include a threaded sleeve 10. The inner wall of the sleeve 10 has an internal thread structure, and the side wall of the threaded rod 8 has an external thread structure that matches the internal thread structure. By the thread engagement of the sleeve 10 and the threaded rod 8, the cover plate 6 can be firmly connected to the connecting flange 5 with good connection strength. An elastic washer 11 is provided at the bottom of the sleeve 10, and several grooves 12 for embedding the elastic washer 11 are provided on the cover plate 6. After the sleeve 10 is threaded onto the threaded rod 8, the sleeve 10 can be screwed on until the elastic washer 11 is embedded in the groove 12. The elastic washer 11 will undergo elastic deformation under pressure, thereby applying a thrust to the sleeve 10 in the opposite direction, making the threaded connection between the sleeve 10 and the threaded rod 8 more stable. Several anti-slip grooves are provided on the side wall of the sleeve 10, which greatly increases the friction coefficient on the side wall of the sleeve 10, making it less likely to slip when screwing the sleeve 10, and making the operation easier and less strenuous.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fan casing, comprising a casing (1), characterized in that: The housing (1) is provided with a sound-absorbing structure, which includes a cover (2). Several supports (3) are provided inside the cover (2). Sound-absorbing cotton (4) is inserted between the supports (3) and the inner sidewall of the cover (2). A connecting flange (5) is provided on the cover (2). A cover for contacting the sound-absorbing cotton (4) is detachably connected to the connecting flange (5).

2. The casing of a fan according to claim 1, characterized in that: The cover includes a cover plate (6) and an insert (7) for embedding inside the bracket (3), the common height of the insert (7) and the sound-absorbing cotton (4) being greater than the length of the bracket (3).

3. The casing of a fan according to claim 2, characterized in that: The connecting flange (5) is provided with several threaded rods (8), and the cover plate (6) is provided with several through holes (9) for the threaded rods (8) to pass through. The threaded rods (8) are threaded with threaded parts.

4. The casing of a fan according to claim 3, characterized in that: The threaded component includes a threaded sleeve (10), the inner sidewall of which is provided with an internal thread structure, and the sidewall of the threaded rod (8) is provided with an external thread structure that matches the internal thread structure.

5. The casing of a fan according to claim 4, characterized in that: The bottom of the threaded sleeve (10) is provided with an elastic washer (11), and the cover plate (6) is provided with a plurality of grooves (12) for embedding the elastic washer (11).

6. The casing of a fan according to claim 4, characterized in that: The threaded sleeve (10) has several anti-slip grooves on its side wall.

Images