Silencing device of heating and ventilation system

Abstract

The utility model provides a silencing device of a heating and ventilation system, which relates to the technical field of silencing devices and comprises a silencing pipeline, an access hole is formed in the front surface of the silencing pipeline, a protective cover is inserted into the inner surface of the access hole, clamping grooves are formed in the inner walls of the two sides of the access hole, a T-shaped groove is formed in the front surface of the protective cover, and the protective cover is inserted into the T-shaped groove. And fixing blocks are fixedly connected to the positions, close to the two sides, of the inner surface of the T-shaped groove, and a plurality of sliding rods are movably connected to the outer surfaces of the two fixing blocks in a penetrating mode. According to the noise reduction device, the pull plate, the clamping groove, the limiting frame, the fixing block, the clamping block, the sliding rod, the spring and the T-shaped groove are used in cooperation, the protective cover can be conveniently disassembled and assembled, the access hole is exposed, the noise reduction rod or the dustproof net can be conveniently taken out from the noise reduction pipeline through the access hole, and the convenience of overhauling or replacing the noise reduction rod and the dustproof net is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of silencing devices, in particular to a silencing device for a heating, ventilation and air conditioning system. Background Art

[0002] The HVAC ventilation system is an important part of HVAC. Since HVAC is responsible for heating, ventilation and air conditioning in the room or car, it controls the indoor temperature and improves the indoor comfort. It is an important part of medium and large industrial buildings or office buildings. When the HVAC starts to ventilate, a strong airflow is generated inside for ventilation. The air flow rate is too fast and hits the inner wall of the pipe, which is easy to cause excessive noise.

[0003] In the prior art, in order to ensure that no wind noise is generated during ventilation, HVAC usually installs sound-absorbing materials such as sound-absorbing cotton or sound-absorbing rods inside the pipe to eliminate the noise. However, the existing sound-absorbing rods are usually directly installed inside the pipe. Therefore, when the sound-absorbing rod fails or is damaged, it is not convenient to maintain and replace it, which makes it inconvenient to use. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that in the prior art, in order to ensure that no wind noise is generated during ventilation, HVAC usually installs silencing materials such as silencing cotton or silencing rods inside the pipe to eliminate the noise, but the existing silencing rods are usually directly installed inside the pipe. Therefore, when the silencing rods fail or are damaged, it is inconvenient to maintain and replace them, and it is inconvenient to use. A silencing device for a HVAC system is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a silencer device of a heating, ventilation and ventilation system, comprising: a silencer pipe, a front surface of the silencer pipe is provided with an inspection port, the inner surface of the inspection port is inserted with a protective cover, the inner walls on both sides of the inspection port are provided with card slots, the front surface of the protective cover is provided with a T-slot, the inner surface of the T-slot is fixedly connected with a fixing block near the two sides, the outer surfaces of the two fixing blocks are movably penetrated and connected with a plurality of sliding rods, the outer surfaces of the plurality of sliding rods are sleeved with springs, the plurality of sliding rods are divided into two groups, one end of the two groups of sliding rods is fixedly connected with a pull plate, the other end of the two groups of sliding rods is fixedly connected with a card block, the inner walls on both sides of the silencer pipe are fixedly connected with a limiting frame, the inner surfaces of the two limiting frames are inserted with mounting plates, and the outer surfaces of the two mounting plates are fixedly connected with a plurality of silencer rods.

[0006] Preferably, slide grooves are provided on the inner walls of both sides of the silencer pipe near the right side, and a dustproof net is slidably connected between the inner surfaces of the two slide grooves.

[0007] Preferably, the two slide grooves are both connected to the inspection port, and the front surfaces of the two mounting plates and the dustproof net are both provided with rubber pads.

[0008] Preferably, the outer surfaces of the two clamping blocks are respectively engaged with the inner surfaces of the two clamping slots, and the outer surface of the protective cover is bonded and connected with a rubber strip at the rear side of the clamping block.

[0009] Preferably, one ends of the plurality of springs are respectively fixedly connected to the outer surfaces of the two fixing blocks, and the other ends of the plurality of springs are respectively fixedly connected to the outer surfaces of the two clamping blocks.

[0010] Preferably, a support block is fixedly connected to the inner surface of the T-slot at a central position, and a handle is symmetrically fixedly connected to the front surface of the protective cover.

[0011] Preferably, the positions of the two card blocks match the positions of the two card slots.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, the pull plate, the card slot, the limit frame, the fixed block, the card block, the sliding rod, the spring and the T-slot are used together to facilitate the disassembly and installation of the protective cover, so that the inspection port is exposed, and the silencer rod or the dustproof net is conveniently taken out from the silencer pipe through the inspection port, thereby improving the convenience of inspecting or replacing the silencer rod and the dustproof net.

[0014] 2. In the utility model, the outer rubber strip is squeezed and deformed to fill the gap at the connection between the protective cover and the inspection port to ensure the sealing of the protective cover after installation. The protective cover squeezes the rubber pad to provide a certain fixation for the mounting plate and the dustproof net to avoid the mounting plate and the dustproof net shaking in the silencer duct during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a muffler device for a heating, ventilation and ventilation system is provided for the utility model;

[0016] Figure 2 The utility model provides a partial structural development diagram of a muffler device for a heating, ventilation and ventilation system;

[0017] Figure 3 A cross-sectional view of a muffler device for a heating, ventilation and ventilation system is provided for the utility model;

[0018] Figure 4 A cross-sectional view of a protective cover of a muffler device for a heating, ventilation and ventilation system is provided for the utility model;

[0019] Figure 5The utility model provides a cross-sectional view from another angle of a protective cover of a silencer device of a heating, ventilation and ventilation system.

[0020] Legend: 1. Silencer duct; 2. Dust-proof net; 3. Pull plate; 4. Protective cover; 5. Support block; 6. Handle; 7. Slot; 8. Slide; 9. Limiting frame; 10. Rubber pad; 11. Mounting plate; 12. Silencer rod; 13. Fixing block; 14. Slot; 15. Rubber strip; 16. Sliding rod; 17. Spring; 18. T-slot; 19. Inspection port. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1, as Figure 1-Figure 5 As shown, the utility model provides a muffler device for a heating and ventilation system, comprising: a muffler duct 1, an inspection port 19 is provided on the front surface of the muffler duct 1, a protective cover 4 is inserted on the inner surface of the inspection port 19, a card slot 7 is provided on both sides of the inner wall of the inspection port 19, a T-slot 18 is provided on the front surface of the protective cover 4, a fixed block 13 is fixedly connected to the inner surface of the T-slot 18 near both sides, a plurality of sliding rods 16 are movably penetrated and connected to the outer surfaces of the two fixed blocks 13, a spring 17 is sleeved on the outer surfaces of the plurality of sliding rods 16, the plurality of sliding rods 16 are divided into two groups, one end of the two groups of sliding rods 16 are fixedly connected to a pull plate 3, and the other end of the two groups of sliding rods 16 are fixedly connected to a card slot 7. Block 14, the inner walls of both sides of the silencer pipe 1 are fixedly connected with limit frames 9, the inner surfaces of the two limit frames 9 are inserted with mounting plates 11, the outer surfaces of the two mounting plates 11 are fixedly connected with a plurality of silencer rods 12, the inner walls of both sides of the silencer pipe 1 are provided with slide grooves 8 near the right side, a dustproof net 2 is slidably connected between the inner surfaces of the two slide grooves 8, the outer surface of the protective cover 4 is located at the rear side of the block 14 and is bonded with a rubber strip 15, the inner surface of the T-slot 18 is located at the center position and is fixedly connected with a support block 5, the front surface of the protective cover 4 is symmetrically fixedly connected with a handle 6, the positions of the two blocks 14 match the positions of the two slots 7, and the two slide grooves 8 are connected to the inspection port 19.

[0024] The effect achieved by the entire embodiment 1 is that the silencer duct 1 is connected to the vent of the heater and air conditioner, so that the sound generated during ventilation can be eliminated by the silencer rod 12 inside the silencer duct 1, and with the setting of the dustproof net 2, external dust or impurities can be prevented from entering the interior of the silencer duct 1. When the internal silencer rod 12 fails after long-term use and needs to be replaced, the staff will simultaneously push the pull plate 3 inward to make the two pull plates 3 fit with the support block 5, thereby driving the sliding rod 16 to slide on the fixed block 13, moving the card block 14 to the inside of the T-slot 18, and compressing the multiple springs 17, so that the two card blocks 14 are no longer engaged with the card slot 7, and then remove the protective cover 4 through the handle 6 to expose the inspection port 19, so as to facilitate the inspection of the internal silencer rod 12. When the silencer rod 12 needs to be replaced, the mounting plate 11 is pulled out from the limiting frame 9, and the silencer rod 12 is removed from the silencer duct 1 After the dust screen 2 is removed from the silencing duct 1, the dust screen 2 is removed from the silencing duct 1 and the dust screen 2 is removed from the silencing duct 1. After the dust screen 2 is removed from the silencing duct 1, the dust screen 2 is removed from the silencing duct 1 and the dust screen 2 is removed from the silencing duct 1. After the dust screen 2 is removed from the silencing duct 1, the dust screen 2 is removed from the silencing duct 1 and the dust screen 2 is removed from the silencing duct 1.

[0025] Embodiment 2, as Figure 1-Figure 5 As shown, the outer surfaces of the two clamping blocks 14 are respectively engaged with the inner surfaces of the two clamping grooves 7, the front surfaces of the two mounting plates 11 and the dustproof net 2 are provided with rubber pads 10, one ends of the multiple springs 17 are respectively fixedly connected to the outer surfaces of the two fixing blocks 13, and the other ends of the multiple springs 17 are respectively fixedly connected to the outer surfaces of the two clamping blocks 14.

[0026] The effect achieved by the entire embodiment 2 is that, when the protective cover 4 is installed, the outer rubber strip 15 will be squeezed and deformed to fill the gap at the connection between the protective cover 4 and the inspection port 19, thereby ensuring the sealing of the protective cover 4 after installation. The protective cover 4 will squeeze the rubber pad 10 to provide a certain degree of fixation for the mounting plate 11 and the dustproof net 2, thereby preventing the mounting plate 11 and the dustproof net 2 from shaking in the silencer duct 1 during use.

[0027] Working principle: Push the pull plate 3 inward at the same time, so that the two pull plates 3 fit with the support block 5, thereby driving the sliding rod 16 to slide on the fixed block 13, moving the card block 14 to the inside of the T-slot 18, and compressing the multiple springs 17, so that the two card blocks 14 are no longer engaged with the card slot 7, and then remove the protective cover 4 through the handle 6 to expose the inspection port 19, so as to facilitate the inspection of the internal silencer rod 12. When the silencer rod 12 needs to be replaced, the mounting plate 11 is pulled out from the limiting frame 9, and the silencer rod 12 is taken out from the inside of the silencer duct 1 for replacement or maintenance. At the same time, the dustproof net 2 can also be pulled out from the slide slot 8, and the dustproof net 2 can be cleaned to ensure the ventilation effect. When the processing is completed, the mounting plate 11 is inserted into the inner wall of the silencer duct 1 along the limiting frame 9, and the dustproof net 2 is inserted along the slide slot 8. When the installation is completed, the handle 6 is used. The protective cover 4 is picked up and the pull plate 3 is pushed inward again to move the card block 14 into the T-slot 18, and then the protective cover 4 is pushed backward to be inserted into the inspection port 19, and then the pull plate 3 is released. Therefore, the card block 14 will be pushed out from the T-slot 18 through the restoring force of multiple springs 17 during rebound, so that the card block 14 is stuck in the card slot 7, and the installation of the protective cover 4 is completed. At the same time, the rubber strip 15 on the outside will be squeezed and deformed to fill the gap at the connection between the protective cover 4 and the inspection port 19 to ensure the sealing of the protective cover 4 after the installation is completed. The protective cover 4 will squeeze the rubber pad 10 to provide a certain fixation for the mounting plate 11 and the dustproof net 2, and the inspection port 19 is blocked, which is convenient for the removal and installation of the protective cover 4. Therefore, it is convenient to remove the mounting plate 11 and the dustproof net 2 from the silencer duct 1 through the inspection port 19, and replace or maintain the silencer rod 12 and the dustproof net 2.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A muffler for a heating, ventilation and ventilation system, characterized in that: include: A silencer pipe (1), wherein the front surface of the silencer pipe (1) is provided with an inspection port (19), the inner surface of the inspection port (19) is provided with a protective cover (4), the inner walls on both sides of the inspection port (19) are provided with a card slot (7), the front surface of the protective cover (4) is provided with a T-shaped groove (18), the inner surface of the T-shaped groove (18) is fixedly connected to a fixed block (13) at a position close to both sides, the outer surfaces of the two fixed blocks (13) are movably penetrated and connected with a plurality of sliding rods (16), and the plurality of sliding rods (16) are provided on the inner surfaces of the two fixed blocks (13). The outer surfaces of the rods (16) are sleeved with springs (17); the plurality of sliding rods (16) are divided into two groups; one end of the two groups of sliding rods (16) is fixedly connected to a pull plate (3); the other ends of the two groups of sliding rods (16) are fixedly connected to a clamping block (14); the inner walls on both sides of the silencer pipe (1) are fixedly connected to limit frames (9); the inner surfaces of the two limit frames (9) are inserted with mounting plates (11); the outer surfaces of the two mounting plates (11) are fixedly connected to a plurality of silencer rods (12).

2. The muffler device for a heating, ventilation and ventilation system according to claim 1, characterized in that: Slide grooves (8) are provided on the inner walls of both sides of the muffler pipe (1) near the right side, and a dustproof net (2) is slidably connected between the inner surfaces of the two slide grooves (8).

3. The muffler device for a heating, ventilation and ventilation system according to claim 2, characterized in that: The two slide grooves (8) are both connected to the inspection port (19), and the front surfaces of the two mounting plates (11) and the dustproof net (2) are both provided with rubber pads (10).

4. The muffler device for a heating, ventilation and ventilation system according to claim 3, characterized in that: The outer surfaces of the two clamping blocks (14) are respectively engaged with the inner surfaces of the two clamping slots (7), and the outer surface of the protective cover (4) is bonded and connected to a rubber strip (15) at the rear side of the clamping blocks (14).

5. The muffler device for a heating, ventilation and ventilation system according to claim 4, characterized in that: One end of the plurality of springs (17) is fixedly connected to the outer surfaces of the two fixing blocks (13), and the other end of the plurality of springs (17) is fixedly connected to the outer surfaces of the two clamping blocks (14).

6. The muffler device for a heating, ventilation and ventilation system according to claim 5, characterized in that: A support block (5) is fixedly connected to the inner surface of the T-shaped groove (18) at a central position, and a handle (6) is symmetrically fixedly connected to the front surface of the protective cover (4).

7. The muffler device for a heating, ventilation and ventilation system according to claim 6, characterized in that: The positions of the two clamping blocks (14) match the positions of the two clamping slots (7).

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