Sound-absorbing cotton fixing structure

Abstract

The utility model relates to the technical field of integrated cookers, and discloses a sound-absorbing cotton fixing structure which comprises a negative pressure box assembly, a volute assembly is fixed on the inner side wall of the negative pressure box assembly, an air duct assembly is fixed at the bottom of the negative pressure box assembly, an air outlet of the volute assembly is in butt joint with the air duct assembly, and the volute assembly is fixed on the inner side wall of the negative pressure box assembly. A negative pressure box rear plate is fixed to the side wall, away from the volute assembly, of the negative pressure box assembly, a cover plate welding piece is fixed to the side wall, located in the negative pressure box assembly, of the negative pressure box rear plate, and sound absorption cotton is fixed to the side wall of the cover plate welding piece. Noise reduction is achieved by additionally arranging the sound-absorbing cotton, the installation structure of the sound-absorbing cotton is of an inserted type, installation and maintenance of equipment are facilitated, the assembly difficulty is lowered, the production cost is saved, the coverage area of the sound-absorbing cotton is increased, and the sound-absorbing effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated stoves, and in particular to a sound-absorbing cotton fixing structure related to the assembly of integrated stoves. Background Art

[0002] There are various integrated stove fan systems on the existing market. Basically, all fan systems are composed of a negative pressure box assembly, a volute assembly, and an air duct assembly, wherein the volute assembly is inside the negative pressure box assembly, and the negative pressure box assembly is above the air duct assembly. The oil smoke flows into the negative pressure box through the start-up of the motor in the volute assembly, and then flows into the air duct assembly through the volute assembly, and finally is discharged through the air duct assembly; however, recently due to the large noise of the fan system, some manufacturers have adopted the method of adding sound-absorbing cotton inside the negative pressure box to reduce the noise of the fan system during operation. Generally, a sheet metal part with an opening is folded into a corresponding shape, and the sound-absorbing cotton is embedded in the sheet metal, and finally the sound-absorbing cotton is fixed on the back plate of the negative pressure box. This is the most traditional and currently the most commonly used method; however, due to the small internal space of the negative pressure box, the fixed edge of the sheet metal will further reduce the installable volume of the sound-absorbing cotton, resulting in an unclear noise reduction effect, and when this assembly method is implemented, the installation is difficult, and the production and after-sales costs are relatively high, so it needs to be improved. For this reason, a sound-absorbing cotton fixing structure is designed. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to propose a sound-absorbing cotton fixing structure, reduce the difficulty of assembly, save production costs, increase the coverage area of ​​the sound-absorbing cotton, and enhance the sound absorption effect.

[0004] According to the sound-absorbing cotton fixing structure proposed in the utility model, it includes a negative pressure box assembly, the inner side wall of the negative pressure box assembly is fixed with a volute assembly, the bottom of the negative pressure box assembly is fixed with an air duct assembly, the air outlet of the volute assembly is connected to the air duct assembly, the side wall of the negative pressure box assembly and the side away from the volute assembly is fixed with a negative pressure box rear plate, the side wall of the negative pressure box rear plate located in the negative pressure box assembly is fixed with a cover plate welding part, and the side wall of the cover plate welding part is fixed with sound-absorbing cotton.

[0005] Preferably, an air inlet is arranged on the top of the negative pressure box assembly, and the sound-absorbing cotton is arranged below the air inlet and close to the volute assembly.

[0006] Preferably, an air guide interface for docking with a volute assembly is fixedly provided on the top of the air duct assembly, and an air outlet is provided on the side wall of the air duct assembly.

[0007] Preferably, a fixed bracket, a longitudinal bracket and a transverse bracket are fixed to the side wall of the rear plate of the cover negative pressure box.

[0008] Preferably, the plate welding member comprises a cover member connected to the rear plate of the negative pressure box, the side walls of the cover member are symmetrically fixed with blocking pieces, and the top of the cover member is symmetrically welded and fixed with T-shaped welding pieces.

[0009] Preferably, the cover plate is clamped on the surfaces of a plurality of transverse brackets, the blocking piece is clamped on the surface of the longitudinal bracket, and the T-shaped welding piece is butt-jointed and fixed to the fixed bracket.

[0010] The beneficial effects of the utility model are as follows: since the volute is also in the negative pressure box and will generate greater vibration and wind noise during operation, noise reduction is achieved by adding sound-absorbing cotton, and the installation structure of the sound-absorbing cotton is plug-in type, which facilitates the installation and maintenance of the equipment, reduces the difficulty of assembly, saves production costs, increases the coverage area of ​​the sound-absorbing cotton, and enhances the sound absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is an exploded view of the overall structure of the sound-absorbing cotton fixing structure proposed in the utility model.

[0012] Figure 2 This is a front view of the overall structure of the sound-absorbing cotton fixing structure proposed in the utility model.

[0013] Figure 3 This is a cross-sectional view of the internal structure of the negative pressure box assembly of the sound-absorbing cotton fixing structure proposed in the utility model.

[0014] Figure 4 This is a schematic diagram of the installation structure of the rear plate of the negative pressure box of the sound-absorbing cotton fixing structure proposed by the utility model.

[0015] Figure 5 This is a schematic diagram of the cover plate structure of the sound-absorbing cotton fixing structure proposed in the utility model.

[0016] In the figure: 1. Negative pressure box assembly; 2. Volute assembly; 3. Air duct assembly; 4. Cover plate welding parts; 5. Sound-absorbing cotton; 6. Fixed bracket; 7. Longitudinal bracket; 8. Horizontal bracket; 9. Negative pressure box rear plate; 10. T-shaped welding piece; 11. Cover plate part; 12. Baffle. DETAILED DESCRIPTION

[0017] Reference Figure 1-5The sound-absorbing cotton fixing structure comprises a negative pressure box component 1, and a volute component 2 is fixed on the inner wall of the negative pressure box component 1. The volute component 2 is a wind source power component, and a built-in motor and wind wheel are used to guide the wind. An air duct component 3 is fixed on the bottom of the negative pressure box component 1, and the air outlet of the volute component 2 is connected to the air duct component 3. A negative pressure box rear plate 9 is fixed on the side wall of the negative pressure box component 1 and away from the side of the volute component 2. The negative pressure box rear plate 9 and the negative pressure box component 1 can be disassembled and assembled. The negative pressure box rear plate 9 is located on the side wall of the negative pressure box component 1 and is fixed with a cover plate welding part 4. The side wall of the cover plate welding part 4 is fixed with sound-absorbing cotton 5. After the volute is running, the internal pressure of the negative pressure box is less than that of the outside, so the air flows into the negative pressure box. Since the volute is also in the negative pressure box, and it will generate large vibration and wind noise during operation, noise reduction is achieved by adding sound-absorbing cotton 5, and the installation structure of the sound-absorbing cotton 5 is plug-in, which is convenient for installation and maintenance of the equipment.

[0018] An air inlet is arranged at the top of the negative pressure box assembly 1, and the sound-absorbing cotton 5 is arranged below the air inlet and close to the volute assembly 2. An air guide interface for docking with the volute assembly 2 is fixedly opened on the top of the air duct assembly 3, and an air outlet is arranged on the side wall of the air duct assembly 3. A fixed bracket 6, a longitudinal bracket 7, and a transverse bracket 8 are fixed to the side wall of the negative pressure box rear plate 9. The cover plate welding part 4 includes a cover plate part 11 docked with the negative pressure box rear plate 9, and a baffle 12 is symmetrically fixed to the side wall of the cover plate part 11. A T-shaped welding piece 10 is symmetrically welded and fixed to the top of the cover plate part 11. The cover plate part 11 is clamped on the surface of multiple transverse brackets 8, and the baffle 12 is clamped on the surface of the longitudinal bracket 7. The T-shaped welding piece 10 is docked and fixed to the fixed bracket 6, and the connection is achieved by fixing bolts.

[0019] When the device is in use, wind enters from the air inlet. Since the volute assembly 2 can generate a large amount of air, wind noise is easily generated at the air inlet. Sound-absorbing cotton 5 is fixed at the air inlet. It can be seen that when the wind enters the negative pressure box, it begins to be absorbed by the sound-absorbing cotton 5, and the sound-absorbing cotton 5 is facing the air inlet of the volute. Therefore, most of the noise generated by the volute will be directly transmitted to the sound-absorbing cotton 5; the noise at the upper position inside the negative pressure box is relatively large, so the sound-absorbing cotton 5 adopts a thick upper and thin lower method.

Claims

1. Sound-absorbing cotton fixing structure, characterized by: It includes a negative pressure box assembly, a volute assembly is fixed to the inner wall of the negative pressure box assembly, an air duct assembly is fixed to the bottom of the negative pressure box assembly, an air outlet of the volute assembly is connected to the air duct assembly, a negative pressure box rear plate is fixed to the side wall of the negative pressure box assembly and the side away from the volute assembly, a cover plate welding part is fixed to the side wall of the negative pressure box rear plate located in the negative pressure box assembly, and sound-absorbing cotton is fixed to the side wall of the cover plate welding part.

2. The sound-absorbing cotton fixing structure according to claim 1 is characterized in that: An air inlet is arranged on the top of the negative pressure box assembly, and the sound-absorbing cotton is arranged below the air inlet and close to the volute assembly.

3. The sound-absorbing cotton fixing structure according to claim 1 is characterized in that: An air guide interface for docking with a volute assembly is fixedly provided on the top of the air duct assembly, and an air outlet is provided on the side wall of the air duct assembly.

4. The sound-absorbing cotton fixing structure according to claim 1 is characterized in that: A fixed bracket, a longitudinal bracket and a transverse bracket are fixed to the side wall of the rear plate of the negative pressure box.

5. The sound-absorbing cotton fixing structure according to claim 4 is characterized in that: The cover plate welding part includes a cover plate part connected to the rear plate of the negative pressure box, a blocking piece is symmetrically fixed to the side wall of the cover plate part, and a T-shaped welding piece is symmetrically welded and fixed to the top of the cover plate part.

6. The sound-absorbing cotton fixing structure according to claim 5 is characterized in that: The cover plate is clamped on the surfaces of a plurality of transverse brackets, the blocking piece is clamped on the surface of the longitudinal bracket, and the T-shaped welding piece is butt-jointed and fixed to the fixed bracket.

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