Air duct noise reduction device of heating ventilation air conditioner

Abstract

The utility model discloses an air pipe noise reduction device of a heating ventilation air conditioner, which comprises an air pipe main body, a noise reduction gasket is fixedly arranged on the inner wall of the air pipe main body, a sound insulation sleeve is fixedly arranged on the outer side of the air pipe main body, a plurality of mounting frames are fixedly arranged on the outer side of the sound insulation sleeve, and the upper mounting frame and the lower mounting frame are symmetrically distributed. A fixing plate is fixedly mounted at one ends of the two symmetrical mounting frames, connecting blocks are fixedly mounted at the other ends of the two symmetrical mounting frames, a screw rod is arranged between the two connecting blocks in a penetrating manner, and nuts are in threaded connection with the outer side of the screw rod and located on the sides, away from each other, of the two connecting blocks; the silencing gasket and the sound insulation sleeve are arranged on the inner wall and the outer side of the air pipe body respectively to preliminarily reduce noise generated when the air pipe body works, the installation frame is further arranged on the outer side of the air pipe body to further fix the air pipe body, vibration generated when the air pipe body works is reduced, and the service life of the air pipe body is prolonged. Therefore, the noise reduction effect is achieved.

Description

Technical Field

[0001] The utility model relates to an air duct noise reduction device, in particular to an air duct noise reduction device for a heating, ventilation and air conditioning (HVAC) system. Background Technique

[0002] HVAC, that is, an air conditioner, refers to a device that uses artificial means to adjust and control parameters such as the temperature, humidity, and flow rate of the air in a building or structure. Generally, it includes a cold source or heat source device, a cold and heat medium distribution system, a terminal device, and several other auxiliary devices. Specifically, it processes the air state to make the air parameters in the target environment meet certain requirements, and the air duct is the "vein" for transporting air in the HVAC system.

[0003] Currently, the air ducts of existing HVAC systems do not have a noise reduction structure, and the noise generated during ventilation is relatively large. Therefore, this application proposes an air duct noise reduction device for HVAC systems to solve this problem. Content of the Utility Model

[0004] The purpose of the utility model is to provide an air duct noise reduction device for an HVAC system to solve the problem that the air ducts of existing HVAC systems in the above-mentioned background technique do not have a noise reduction structure and the noise generated during ventilation is relatively large.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An air duct noise reduction device for an HVAC system includes an air duct main body. A sound absorption gasket is fixedly installed on the inner wall of the air duct main body, and a sound insulation sleeve is fixedly installed on the outside of the air duct main body. A plurality of mounting brackets are fixedly installed on the outside of the sound insulation sleeve, and the upper and lower mounting brackets are symmetrically distributed. One end of the two symmetrically distributed mounting brackets is fixedly installed with a fixing plate together, and the other end of each of the two symmetrically distributed mounting brackets is fixedly installed with a connecting block. A screw rod is arranged through between the two connecting blocks, and nuts are threadedly connected to the outside of the screw rod and on the sides where the two connecting blocks are away from each other, and the nuts are in close fit with the connecting blocks.

[0007] As a further solution of the utility model: A plurality of fixing bolts are arranged on one side of the fixing plate, and the fixing plate is fixed on the surface to be installed through the fixing bolts.

[0008] As a further solution of the utility model: An installation groove is fixedly installed on the outside of one end of the air duct main body. Springs are symmetrically arranged on one side inside the installation groove. An installation plate is arranged on one side of the installation groove. An air inlet is formed on the installation plate. Limiting grooves are symmetrically formed on one side of the installation plate. Limiting blocks are arranged inside the limiting grooves. A filter screen is fixedly installed on the other side of the installation plate and at a position corresponding to the air inlet. One end of the spring is inserted into the limiting groove and fixedly connected to the limiting block, and a through groove for the spring to pass through is formed on the installation plate.

[0009] As a further solution of the present utility model: A pull ring is fixedly installed on one side of the limit block.

[0010] As a further solution of the present utility model: One side inside the installation groove and inside the spring is provided with a telescopic rod. The telescopic rod includes a sleeve and a rod body. One end of the sleeve is rotatably connected to the installation groove. The rod body is slidably connected inside the sleeve. One end of the rod body is fixedly connected to the limit block. One end of the spring is fixedly connected to the sleeve.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] 1. The present utility model preliminarily reduces the noise during the operation of the air duct main body by respectively arranging a sound-absorbing gasket and a sound-insulating sleeve on the inner wall and the outer side of the air duct main body. Further, the air duct main body is further fixed by arranging a mounting bracket on the outer side of the air duct main body, reducing the vibration of the air duct main body during operation, thereby achieving the effect of noise reduction.

[0013] 2. The present utility model filters the air passing through the air duct main body by arranging a detachable filter screen inside the air duct main body, so that the dust in the air is intercepted by the filter screen, thereby cleaning the air input into the room and improving the quality of the input air. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural view of the present utility model.

[0015] Figure 2 For the present utility model Figure 1 An enlarged view of part A.

[0016] Figure 3 It is a partial side view of the present utility model.

[0017] Figure 4 It is a partial side view of the present utility model.

[0018] 1. Air duct main body; 2. Mounting bracket; 3. Filter screen; 4. Air inlet; 5. Sound-absorbing gasket; 6. Sound-insulating sleeve; 7. Telescopic rod; 8. Spring; 9. Limit block; 10. Through groove; 11. Installation groove; 12. Installation plate; 13. Fixed plate; 14. Fixed bolt; 15. Connecting block; 16. Screw rod; 17. Nut; 18. Limit groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1 to 4 , in the embodiment of the present utility model, a duct noise reduction device for a heating, ventilation and air conditioning system includes a duct main body 1. A sound insulation gasket 5 is fixedly installed on the inner wall of the duct main body 1, and a sound insulation sleeve 6 is fixedly installed on the outer side of the duct main body 1. A plurality of mounting brackets 2 are fixedly installed on the outer side of the sound insulation sleeve 6, and the upper and lower mounting brackets 2 are symmetrically distributed. One ends of the two symmetrically arranged mounting brackets 2 are jointly fixedly installed with a fixing plate 13, and the other ends of the two symmetrically arranged mounting brackets 2 are both fixedly installed with connecting blocks 15. A screw rod 16 is arranged through between the two connecting blocks 15, and nuts 17 are threadedly connected to the outer side of the screw rod 16 and on the sides where the two connecting blocks 15 are away from each other, and the nuts 17 are in close fit with the connecting blocks 15.

[0021] A plurality of fixing bolts 14 are arranged on one side of the fixing plate 13, and the fixing plate 13 is fixed on the surface to be installed through the fixing bolts 14 for fixing the fixing plate 13.

[0022] An installation groove 11 is fixedly installed on the outer side of one end of the duct main body 1. Springs 8 are symmetrically arranged on one side inside the installation groove 11. An installation plate 12 is arranged on one side of the installation groove 11. An air inlet 4 is opened on the installation plate 12. Limiting grooves 18 are symmetrically opened on one side of the installation plate 12. Limiting blocks 9 are arranged inside the limiting grooves 18. A filter screen 13 is fixedly installed on the other side of the installation plate 12 and at a position corresponding to the air inlet 4. One end of the spring 8 is inserted into the limiting groove 18 and fixedly connected to the limiting block 9. A through groove 10 for the spring 8 to pass through is opened on the installation plate 12. The air passing through the duct main body 1 is filtered by the detachable filter screen 13, so that the dust in the air is intercepted by the filter screen 13, thereby cleaning the air input into the room and improving the quality of the input air.

[0023] A pull ring is fixedly installed on one side of the limiting block 9 to facilitate pulling the limiting block 9.

[0024] An expansion link 7 is arranged on one side inside the installation groove 11 and inside the spring 8. The expansion link 7 includes a sleeve and a rod body. One end of the sleeve is rotatably connected to the installation groove 11, the rod body is slidably connected inside the sleeve, one end of the rod body is fixedly connected to the limiting block 9, and one end of the spring 8 is fixedly connected to the sleeve, providing guidance for the movement of the limiting block 9.

[0025] The working principle of the present utility model is:

[0026] When the utility model is in use, a sound-absorbing gasket 5 is arranged on the inner wall of the air duct main body 1. The sound-absorbing gasket 5 is made of sound-absorbing material. A sound-insulating sleeve 6 is also arranged on the outer side of the air duct main body 1, further blocking the diffusion of sound. At the same time, mounting brackets 2 are arranged at both the top and bottom of the air duct main body 1. The mounting brackets 2 will produce a certain elastic deformation during the tensioning process. The mounting brackets 2 are fixed to the surface to be installed through fixing plates 13 and fixing bolts 14. A connecting block 15 is fixedly installed at the other end of the mounting bracket 2. Let the screw rod 16 pass through the two connecting blocks 15, and tighten the nut 17 on the outer side of the screw rod 16 to fix the air duct main body 1, thereby reducing the vibration of the air duct main body 1 and greatly reducing the noise generated by the vibration. When the air enters the inside of the air duct main body 1, it will pass through the filter screen 3. The filter screen 3 will intercept the dust in the air. When it is necessary to disassemble and clean the filter screen 3, pull the pull ring in the direction away from the spring 8 to drive the limit block 9 to disengage from the limit groove 18. At this time, rotate the limit block 9 so that the limit block 9 corresponds to the through groove 10. At this time, support the mounting plate 12 and release the pull ring. The limit block 9 will contract into the inside of the mounting groove 11 under the reset action of the spring 8. Remove the mounting plate 12 to pull out the filter screen 3 together, realizing the disassembly of the filter screen 3. When installing again, align the through groove 10 on the mounting plate 12 with the limit block 9 and pull the limit block 9 so that the limit block 9 penetrates through the mounting plate 12. After penetrating through the mounting plate 12, rotate the limit block 9 so that the limit block 9 corresponds to the limit groove 18. Then slowly release the limit block 9 to make the limit block 9 snap into the inside of the limit groove 18, thereby realizing the fixation of the filter screen 3.

[0027] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A duct noise reduction device for a heating, ventilation and air conditioning system, comprising a duct body (1), characterized in that: A sound-absorbing gasket (5) is fixedly mounted on the inner wall of the air duct body (1), a sound-insulating sleeve (6) is fixedly mounted on the outer side of the air duct body (1), and a plurality of mounting frames (2) are fixedly mounted on the outer side of the sound-insulating sleeve (6), and the upper and lower mounting frames (2) are symmetrically distributed, a fixing plate (13) is fixedly mounted on one end of the two symmetrical mounting frames (2), and a connecting block (15) is fixedly mounted on the other end of the two symmetrical mounting frames (2), a screw rod (16) is arranged between the two connecting blocks (15), and a nut (17) is threadedly connected to the outer side of the screw rod (16) and located on the side of the two connecting blocks (15) away from each other, and the nut (17) is tightly fitted with the connecting block (15).

2. The HVAC duct noise reduction device according to claim 1, characterized in that: A plurality of fixing bolts (14) are provided on one side of the fixing plate (13), and the fixing plate (13) is fixed to the surface to be installed by means of the fixing bolts (14).

3. The HVAC duct noise reduction device according to claim 1, characterized in that: A mounting groove (11) is fixedly installed on the outer side of one end of the air duct body (1), a spring (8) is symmetrically arranged on one side of the interior of the mounting groove (11), a mounting plate (12) is arranged on one side of the mounting groove (11), an air inlet (4) is provided on the mounting plate (12), a limiting groove (18) is symmetrically arranged on one side of the mounting plate (12), a limiting block (9) is arranged inside the limiting groove (18), a filter screen (3) is fixedly installed on the other side of the mounting plate (12) and at a position corresponding to the air inlet (4), one end of the spring (8) is inserted into the interior of the limiting groove (18) and is fixedly connected to the limiting block (9), and a through groove (10) for the spring (8) to pass through is arranged on the mounting plate (12).

4. The HVAC duct noise reduction device according to claim 3, characterized in that: A pull ring is fixedly mounted on one side of the limit block (9).

5. The HVAC duct noise reduction device according to claim 3, characterized in that: A telescopic rod (7) is provided on one side of the interior of the installation groove (11) and inside the spring (8). The telescopic rod (7) comprises a sleeve and a rod body. One end of the sleeve is rotatably connected to the installation groove (11), the rod body is slidably connected inside the sleeve, one end of the rod body is fixedly connected to the limit block (9), and one end of the spring (8) is fixedly connected to the sleeve.

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