Noise reduction device of central air conditioner

Abstract

The noise reduction device of the central air conditioner comprises a shell, an access door is movably connected to the surface of the shell through hinges, ventilation holes are formed in the two ends of the shell respectively, sound insulation cotton is arranged in the shell, a buffer plate is fixedly connected to the lower portion of the interior of the shell, and the upper portion of the buffer plate is fixedly connected to the lower portion of the interior of the shell. Four round holes are formed in the surface of the buffer plate, springs are arranged in the round holes, one end of each spring is fixedly connected with the interior of the shell, vibration can be caused when the outdoor unit of the central air conditioner runs, and the vibration caused by the fixing plate can be well buffered through the arrangement of the springs and the buffer plate; and the situation that resonance is formed between the fixing plate and the shell through the spring can be reduced through contact between the buffer plate and the fixing plate, a certain sound insulation effect can be achieved on the noise through arrangement of sound insulation cotton, and noise transmission is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning noise reduction technology, and particularly relates to a noise reduction device for a central air conditioning system. Background Technology

[0002] Central air conditioning is a system that centrally handles air conditioning loads. It can provide multiple functions such as cooling, heating, ventilation, and air purification for large spaces such as shopping malls, office buildings, hotels, and factories. Compared with ordinary split air conditioners, central air conditioning has stronger cooling and heating capabilities and can cover a larger area. However, the outdoor unit of a central air conditioning system has a large workload during use and is prone to generating significant noise.

[0003] Some noise reduction devices for central air conditioning use housings and springs to cushion the noise generated by the vibration of the outdoor unit during operation. However, this method may cause resonance during use, which will lead to increased structural vibration and generate more noise. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a noise reduction device for a central air conditioning system. When the outdoor unit of the central air conditioning system is running, it will cause vibration. By setting up springs and buffer plates, the vibration caused by the fixed plate can be effectively buffered, thereby reducing noise. The contact between the buffer plate and the fixed plate can reduce the resonance between the fixed plate and the shell through the spring. The sound insulation cotton can play a role in sound insulation and reduce the transmission of noise.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a noise reduction device for a central air conditioner, comprising a housing, an inspection door movably connected to the surface of the housing via a hinge, ventilation holes at both ends of the housing, sound insulation cotton inside the housing, a buffer plate fixedly connected to the lower part of the housing, four circular holes on the surface of the buffer plate, springs inside the circular holes, one end of each spring fixedly connected to the interior of the housing, a fixing plate fixedly connected to the end of each of the four springs away from the housing, a first electric push rod fixedly connected to each of the four corners of the top of the fixing plate, a rubber fixing bracket fixedly connected to one end of each first electric push rod, a second electric push rod fixedly connected to the top of the interior of the housing, and a buffer pressure plate fixedly connected to one end of each second electric push rod.

[0006] Furthermore, the surface of the fixing plate is in contact with the surface of the buffer plate.

[0007] Furthermore, a pipe hole is provided at the rear end of the housing, and a rubber ring is provided at one end of the housing corresponding to the position of the pipe hole.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] 1. When the outdoor unit of a central air conditioner is running, it will cause vibration. The spring and buffer plate can effectively buffer the vibration caused by the fixed plate, thereby reducing noise. The contact between the buffer plate and the fixed plate can reduce the resonance between the fixed plate and the shell through the spring. The sound insulation cotton can also play a role in sound insulation and reduce the transmission of noise.

[0010] 2. The first electric push rod can move the rubber fixing bracket to fix the outdoor unit of the central air conditioner. Then, the second electric push rod can press the buffer pressure plate against the top of the outdoor unit of the central air conditioner to reduce shaking. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0013] In the diagram: 1. Shell; 2. Ventilation hole; 3. Sound insulation cotton; 4. Buffer plate; 5. Round hole; 6. Spring; 7. Fixing plate; 8. First electric push rod; 9. Rubber fixing bracket; 10. Second electric push rod; 11. Buffer pressure plate; 12. Pipe hole; 13. Inspection door. Detailed Implementation

[0014] 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, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0016] See appendix Figure 1-2As shown, a noise reduction device for a central air conditioner includes a housing 1. An inspection door 13 is movably connected to the surface of the housing 1 via a hinge. Ventilation holes 2 are provided at both ends of the housing 1. Sound insulation cotton 3 is provided inside the housing 1. A buffer plate 4 is fixedly connected to the lower part of the interior of the housing 1. Four round holes 5 are provided on the surface of the buffer plate 4. Springs 6 are provided inside the round holes 5. One end of the springs 6 is fixedly connected to the interior of the housing 1. A fixing plate 7 is fixedly connected to the end of each of the four springs 6 away from the housing 1. A first electric push rod 8 is fixedly connected to each of the four corners of the top of the fixing plate 7. A rubber fixing bracket 9 is fixedly connected to one end of the first electric push rod 8. A second electric push rod 10 is fixedly connected to the top of the interior of the housing 1. A buffer pressure plate 11 is fixedly connected to one end of the second electric push rod 10.

[0017] The surface of the fixing plate 7 is in contact with the surface of the buffer plate 4.

[0018] A pipe hole 12 is provided at the rear end of the housing 1, and a rubber ring is provided at one end of the housing 1 corresponding to the position of the pipe hole 12.

[0019] Working principle: The outdoor unit of the central air conditioner is placed on the fixed plate 7 inside the casing 1. The first electric push rod 8 can drive the rubber fixing bracket 9 to move, thereby fixing the outdoor unit of the central air conditioner. Then, the second electric push rod 10 can drive the buffer plate 11 to press the top of the outdoor unit of the central air conditioner, thereby reducing shaking. When the outdoor unit of the central air conditioner is running, it will vibrate. The spring 6 and the buffer plate 4 can effectively buffer the vibration brought by the fixed plate 7, thereby reducing noise. The contact between the buffer plate 4 and the fixed plate 7 can reduce the resonance between the fixed plate 7 and the casing 1 through the spring 6. The sound insulation cotton 3 can play a role in sound insulation and reduce the transmission of noise.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model 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 basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] 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 noise reduction device for a central air conditioning system, comprising a housing (1), wherein a maintenance door (13) is movably connected to the surface of the housing (1) via a hinge, characterized in that: Ventilation holes (2) are provided at both ends of the housing (1). Sound insulation cotton (3) is provided inside the housing (1). A buffer plate (4) is fixedly connected to the lower part of the housing (1). Four round holes (5) are provided on the surface of the buffer plate (4). Springs (6) are provided inside the round holes (5). One end of the spring (6) is fixedly connected to the inside of the housing (1). A fixing plate (7) is fixedly connected to the end of each of the four springs (6) away from the housing (1). A first electric push rod (8) is fixedly connected to each of the four corners of the top of the fixing plate (7). A rubber fixing bracket (9) is fixedly connected to one end of the first electric push rod (8). A second electric push rod (10) is fixedly connected to the top of the inside of the housing (1). A buffer pressure plate (11) is fixedly connected to one end of the second electric push rod (10).

2. The noise reduction device for a central air conditioning system according to claim 1, characterized in that: The surface of the fixing plate (7) is in contact with the surface of the buffer plate (4).

3. The noise reduction device for a central air conditioning system according to claim 1, characterized in that: The rear end of the housing (1) is provided with a pipe hole (12), and a rubber ring is provided at one end of the housing (1) corresponding to the position of the pipe hole (12).

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