Air outlet noise reduction device of central air conditioner

Abstract

The utility model relates to the technical field of air conditioner noise reduction, and discloses a central air conditioner air outlet noise reduction device which comprises a sound insulation cover, a plurality of installation frames are fixedly connected to one side of the interior of the sound insulation cover, connecting shafts are rotatably connected to the interiors of the installation frames, and installation blocks are fixedly connected to the outer surfaces of the connecting shafts. When wind formed by airflow passes through the dustproof filter screen and is in contact with the buffering and noise-reducing plates, the buffering and noise-reducing plates block the wind and reduce the power of the wind, and meanwhile, the noise-absorbing cotton layers absorb the noise of the wind, so that the noise of the wind is reduced, and the noise of the wind is reduced. After being stressed, the buffer noise reduction plate rotates with the connecting shaft as the axis, and when the buffer noise reduction plate rotates, the buffer noise reduction plate rotates to compress the spring, and the spring plays a role in buffering and counteracting wind power, so that the sound absorption cotton layer on the surface of the buffer noise reduction plate can better absorb noise; and air formed by the airflow passes through the plurality of buffer noise reduction assemblies and then enters the ventilation opening to be subjected to noise reduction again.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioner noise reduction, in particular to an air outlet noise reduction device for a central air conditioner. Background Art

[0002] The central air conditioning system consists of one or more cold and heat source systems and multiple air conditioning systems. This system is different from traditional refrigerant air conditioning. It uses the principle of liquid vaporization refrigeration to provide the required cooling capacity for the air conditioning system to offset the heat load of the indoor environment. The heating system provides the required heat for the air conditioning system to offset the cooling and heating loads of the indoor environment. The central air conditioning vent is the terminal equipment for air outlet and return air in the central air conditioning system. It is an air distribution equipment. The air outlet sends the cooled or heated air into the room, while the return air outlet draws back the dirty air in the room. The two form the entire air circulation, which ensures the indoor cooling and heating effects while also ensuring the cooling and comfort of the indoor air.

[0003] Chinese patent CN215571158 discloses a conveniently installed central air-conditioning outlet noise reduction device, comprising an indoor unit and an air outlet plate installed on the indoor unit, the air outlet plate is provided with an air outlet, the air outlet is detachably connected with a fixing frame, the fixing frame is connected with a mounting frame through a telescopic component, the telescopic component is fixed by four connecting components, the four connecting components are all arranged in the air outlet plate, a noise reduction plate for noise reduction is installed in the mounting frame, a louver is also arranged in the mounting frame, the louver is arranged below the noise reduction plate, and by arranging the telescopic component and the adjustment component, it is possible to avoid climbing of workers when disassembling and installing the noise reduction plate and the louver, so that the disassembly is simple and the installation is convenient, but in the structure of the patent, only the noise reduction plate is arranged, the power of the central air conditioner is large, so that the airflow discharged during the cold and heat exchange is large, even if the wind force is large, the interaction between the airflow and the exhaust duct is likely to generate large noise, which will affect the use environment and cause the air outlet of the central air conditioner to still have certain noise pollution, so a central air conditioner outlet noise reduction device is proposed to address the above shortcomings. Utility Model Content

[0004] The purpose of the utility model is to provide a central air-conditioning air outlet noise reduction device in order to solve the above-mentioned problem. The wind formed by the airflow contacts the buffer noise reduction plate after passing through the dust filter. The buffer noise reduction plate blocks it and reduces its power. At the same time, the sound-absorbing cotton layer absorbs its noise, thereby solving the problems mentioned in the background technology.

[0005] In order to solve the above problems, the utility model provides a technical solution:

[0006] A central air-conditioning air outlet noise reduction device comprises a soundproof cover, a plurality of mounting brackets are fixedly connected to one side of the interior of the soundproof cover, a connecting shaft is rotatably connected to the interior of the plurality of mounting brackets, a mounting block is fixedly connected to the outer surface of the connecting shaft, a buffer noise reduction plate is fixedly connected to the outer surface of the mounting block, and a sound-absorbing cotton layer is fixedly connected to the outer surface of each buffer noise reduction plate.

[0007] As a preferred solution of the utility model, the lower surface of the sound insulation cover is fixedly connected with an air outlet, a vent is opened inside the air outlet, a bent pipe is fixedly connected inside the vent, a plurality of air holes are opened inside the bent pipe, and an air outlet pipe is fixedly connected to the lower surface of the air outlet.

[0008] As a preferred solution of the utility model, a plurality of connection grooves are opened on the other side of the interior of the sound insulation cover, a spring is fixedly connected inside the plurality of connection grooves, the other end of the spring is fixedly connected to a side plate, and the other side of the side plate is fixedly connected to the buffer noise reduction plate.

[0009] As a preferred solution of the utility model, a dustproof filter is fixedly connected to the top of the soundproof cover, and the lower surface of the dustproof filter is in contact with the buffer noise reduction plate.

[0010] As a preferred solution of the utility model, the other end of the air outlet pipe is fixedly connected to the vent, a filter screen is provided at the inner bottom end of the vent, connecting plates are fixedly connected on both sides of the filter screen, and two slots are provided inside the connecting plate.

[0011] As a preferred solution of the utility model, the outer surface of the buffer noise reduction plate is movably connected to the interior of the sound insulation cover.

[0012] As a preferred solution of the utility model, installation grooves are opened on both sides of the interior of the vent, a telescopic rod is fixedly connected to the interior of the installation groove, an output end of the telescopic rod is fixedly connected to a plug plate, and the plug plate is inserted into the interior of the slot.

[0013] The beneficial effect of the utility model is that the wind formed by the airflow contacts the buffer noise reduction plate after passing through the dust filter, and the buffer noise reduction plate blocks it to reduce its power, while the sound-absorbing cotton layer absorbs its noise; after the buffer noise reduction plate is subjected to force, it rotates around the connecting shaft, and when it rotates, the buffer noise reduction plate rotates the compression spring, and the spring acts as a buffer to offset the effect of wind force, so that the sound-absorbing cotton layer on its surface can better absorb noise; after the wind formed by the airflow passes through multiple buffer noise reduction components, it will enter the vent and be reduced and silenced again. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] For ease of explanation, the present invention is described in detail by the following specific implementations and drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the soundproof cover of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the buffer noise reduction board of the utility model;

[0018] Figure 4 It is a schematic diagram of the internal structure of the air outlet of the utility model;

[0019] Figure 5 This is a schematic diagram of the front view structure of the air outlet of the utility model;

[0020] Figure 6 It is an enlarged schematic diagram of point A of the utility model.

[0021] In the figure: 1. Soundproof cover; 2. Mounting frame; 3. Connecting shaft; 4. Mounting block; 5. Buffer noise reduction board; 6. Sound-absorbing cotton layer; 7. Air outlet; 8. Ventilation port; 9. Bend pipe; 10. Air outlet pipe; 11. Connecting slot; 12. Spring; 13. Side panel; 14. Dust filter; 15. Air hole; 16. Filter; 17. Connecting plate; 18. Slot; 19. Mounting slot; 20. Telescopic rod; 21. Insert plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] Example

[0024] See also Figure 1-Figure 4The utility model provides a technical solution: a central air-conditioning air outlet noise reduction device, including a sound insulation cover 1, through the sound insulation cover 1 and the air outlet pipe 10 to cooperate with the vent 8 to perform air delivery operation, a plurality of mounting brackets 2 are fixedly connected to the inner side of the sound insulation cover 1, a connecting shaft 3 is fixedly connected through the mounting bracket 2, a plurality of mounting brackets 2 are internally rotatably connected with the connecting shaft 3, a mounting block 4 is fixedly connected through the connecting shaft 3, a mounting block 4 is fixedly connected to the outer surface of the connecting shaft 3, a buffer noise reduction plate 5 is fixed through the mounting block 4, a buffer noise reduction plate 5 is fixedly connected to the outer surface of the mounting block 4, a sound-absorbing cotton layer 6 is installed through the buffer noise reduction plate 5, and the buffer noise reduction plate 5 drives the side plate 13 to compress the spring 12 after rotation, a sound-absorbing cotton layer 6 is fixedly connected to the outer surface of each buffer noise reduction plate 5, and the sound-absorbing cotton layer 6 can better absorb noise, and an air outlet 7 is fixedly connected to the lower surface of the sound insulation cover 1, through The air outlet 7 is provided with a vent 8, and the inside of the air outlet 7 is provided with a vent 8, a bent pipe 9 is fixed through the vent 8, and the inside of the vent 8 is fixedly connected with the bent pipe 9, and the air flow can flow slowly after entering the bent pipe 9, and a plurality of air holes 15 are provided inside the bent pipe 9, and the air holes 15 can also realize the circulation of air flow, and the lower surface of the air outlet 7 is fixedly connected with an air outlet pipe 10, and the final wind body is output through the air outlet pipe 10, and a plurality of connecting grooves 11 are provided on the other side of the inside of the sound insulation cover 1, and a spring 12 is fixedly connected through the connecting groove 11, and a plurality of connecting grooves 11 are fixedly connected with a spring 12, and the spring 12 plays a buffering role thereon to offset the effect of wind force, and the other end of the spring 12 is fixedly connected with a side plate 13, and the spring 12 plays a buffering role thereon through the side plate 13, and the other side of the side plate 13 is fixedly connected to the buffer noise reduction plate 5.

[0025] Furthermore, a dust filter 14 is fixedly connected to the top of the soundproof cover 1. The wind formed by the airflow contacts the buffer noise reduction plate 5 after passing through the dust filter 14. The lower surface of the dust filter 14 abuts against the buffer noise reduction plate 5. The other end of the air outlet pipe 10 is fixedly connected to the vent 8, and the outer surface of the buffer noise reduction plate 5 is movably connected to the interior of the soundproof cover 1.

[0026] Furthermore, a filter screen 16 is provided at the bottom end of the interior of the vent 8, through which debris in the wind can be filtered, and connecting plates 17 are fixedly connected on both sides of the filter screen 16. The connecting plate 17 is taken out of the mounting groove 19, and two slots 18 are provided inside the connecting plate 17. The plug-in plate 21 can be fixed by inserting it into the slot 18. Mounting grooves 19 are provided on both sides of the interior of the vent 8, and the connecting plate 17 is fixed by the mounting groove 19. A telescopic rod 20 is fixedly connected to the interior of the mounting groove 19, and the plug-in plate 21 is driven to move out of the interior of the slot 18 by the telescopic rod 20. The output end of the telescopic rod 20 is fixedly connected to the plug-in plate 21, which is limited in the slot 18 by the plug-in plate 21, and the plug-in plate 21 is inserted inside the slot 18.

[0027] In summary: the connecting shaft 3 is fixed by the mounting frame 2, the mounting block 4 is fixed by the connecting shaft 3, the buffer noise reduction plate 5 is fixed by the mounting block 4, the sound-absorbing cotton layer 6 is installed by the buffer noise reduction plate 5, and the wind formed by the airflow contacts the buffer noise reduction plate 5 after passing through the dust filter 14, and the buffer noise reduction plate 5 blocks it to reduce its power, and at the same time the sound-absorbing cotton layer 6 absorbs its noise, and after the buffer noise reduction plate 5 is subjected to force, it rotates with the connecting shaft 3 as the axis, and when it rotates, the buffer noise reduction plate 5 drives the side plate 13 to compress the spring 12 after it rotates, and the spring 12 plays a buffering role on it through the side plate 13, offsetting the effect of wind force, so that the sound-absorbing cotton layer 6 on its surface can better absorb noise, and the wind formed by the airflow will enter the vent 8 after passing through multiple buffer noise reduction components and be reduced and silenced again, and the airflow can flow slowly after entering it through the curved pipe 9, At the same time, the air holes 15 can also realize the circulation of air flow. The porous structure can reduce the flow rate of sound, consume its kinetic energy, make it flow slowly, and achieve the effect of noise reduction and silencing. The vent 8 is set through the air outlet 7, and the bent pipe 9 is fixed through the vent 8. The final wind body is output through the air outlet pipe 10, and the spring 12 is fixed through the connecting groove 11. The sound insulation cover 1 and the air outlet pipe 10 cooperate with the vent 8 to carry out air supply operations. In addition, a filter screen 16 is installed at the vent 8. The filter screen 16 can filter out debris in the wind and can be disassembled at the same time. You only need to start the telescopic rod 20, and the telescopic rod 20 drives the plug plate 21 to move out of the inside of the slot 18, so that the connecting plate 17 can be taken out from the installation slot 19, and the filter screen 16 can also be taken out for cleaning. During installation, you only need to insert the plug plate 21 into the slot 18 to fix it.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A central air conditioner air outlet noise reduction device, characterized in that: The invention comprises a soundproof cover (1), wherein a plurality of mounting frames (2) are fixedly connected to one side of the interior of the soundproof cover (1), a connecting shaft (3) is rotatably connected to the interior of the plurality of mounting frames (2), a mounting block (4) is fixedly connected to the outer surface of the connecting shaft (3), a buffer noise reduction plate (5) is fixedly connected to the outer surface of the mounting block (4), and a sound-absorbing cotton layer (6) is fixedly connected to the outer surface of each buffer noise reduction plate (5).

2. A central air conditioner air outlet noise reduction device according to claim 1, characterized in that: The lower surface of the soundproof cover (1) is fixedly connected to an air outlet (7), a vent (8) is provided inside the air outlet (7), a curved pipe (9) is fixedly connected inside the vent (8), a plurality of air holes (15) are provided inside the curved pipe (9), and an air outlet pipe (10) is fixedly connected to the lower surface of the air outlet (7).

3. A central air conditioner air outlet noise reduction device according to claim 1, characterized in that: A plurality of connection grooves (11) are provided on the other side of the interior of the soundproof cover (1), a spring (12) is fixedly connected inside the plurality of connection grooves (11), the other end of the spring (12) is fixedly connected to a side plate (13), and the other side of the side plate (13) is fixedly connected to the buffer noise reduction plate (5).

4. A central air conditioner air outlet noise reduction device according to claim 1, characterized in that: A dustproof filter (14) is fixedly connected to the top of the soundproof cover (1), and the lower surface of the dustproof filter (14) is in contact with the buffer noise reduction plate (5).

5. A central air conditioner air outlet noise reduction device according to claim 2, characterized in that: The other end of the air outlet pipe (10) is fixedly connected to the vent (8), a filter screen (16) is provided at the inner bottom end of the vent (8), connecting plates (17) are fixedly connected to both sides of the filter screen (16), and two slots (18) are provided inside the connecting plate (17).

6. A central air conditioner air outlet noise reduction device according to claim 1, characterized in that: The outer surface of the buffer noise reduction plate (5) is movably connected to the interior of the sound insulation cover (1).

7. A central air conditioner air outlet noise reduction device according to claim 2, characterized in that: The ventilation opening (8) is provided with mounting grooves (19) on both sides thereof, and the interior of the mounting grooves (19) is fixed with a A telescopic rod (20) is fixedly connected to the output end of the telescopic rod (20), and a plug board (21) is fixedly connected to the output end of the telescopic rod (20). The inserting plate (21) is inserted into the interior of the slot (18).

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