A two-stage soundproof cover for a CO2 automobile air conditioner compressor

Abstract

The utility model discloses a kind of CO2 automobile air conditioner compressor secondary sound-absorbing cover, including body, the side surface of body is connected with oil suction pipe and penetrates;The inside of body is fixedly installed with several damping plates, several holes are located in the side of the damping plate and are opened, the inside of the hole is fixedly installed with sound-absorbing cotton;Still include: the side surface of oil suction pipe away from body is provided with oil suction component;Among them, oil suction component includes the threaded pipe of screw connection with oil suction pipe;Among them, the side surface of threaded pipe away from oil suction pipe is connected with sealing ring and penetrates, the side surface of sealing ring away from threaded pipe is connected with connecting pipe and penetrates, by setting oil suction component, to reduce the oil amount with high-pressure gas discharge body, reduce the influence of oil shortage pump body operation, simultaneously by the cooperation between damping plate, hole and sound-absorbing cotton, in a certain extent, can improve sound-absorbing effect, simultaneously also not significantly increase weight and volume.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, specifically to a two-stage muffler cover for a CO2 automotive air conditioning compressor. Background Technology

[0002] The secondary muffler cover for a CO2 automotive air conditioning compressor is a component used to reduce the noise generated during the operation of a CO2 automotive air conditioning compressor. It is usually installed near the compressor's exhaust port and achieves its muffler function through specific structures and materials. However, in the current technology, the exhaust muffler cover of a general rotary compressor can play a muffler role and is fixed at the exhaust port of the upper cylinder head. However, the currently developed horizontal CO2 rotary compressors have problems with insufficient oil suction and high noise.

[0003] A two-stage muffler cover for a CO2 automotive air conditioning compressor is proposed to address the problems mentioned above. Utility Model Content

[0004] The purpose of this utility model is to provide a secondary muffler cover for a CO2 automotive air conditioning compressor, in order to solve the problems mentioned in the background art. In the existing technology, the exhaust muffler cover of a general rotary compressor can play a role in muffler function and is fixed at the exhaust port of the upper cylinder head. However, the currently developed horizontal CO2 rotary compressor has problems of insufficient oil suction and high noise.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a two-stage silencer cover for a CO2 automotive air conditioning compressor, comprising a body, wherein an oil suction pipe is connected through one side surface of the body;

[0006] Several damping plates are fixedly installed around the inside of the main body, and several holes are opened on one side of the damping plates. Sound-absorbing cotton is fixedly installed inside the holes.

[0007] Also includes:

[0008] An oil suction component is provided on the side of the oil suction pipe away from the main body;

[0009] The oil suction assembly includes a threaded pipe that is threadedly connected to the oil suction pipe.

[0010] A sealing ring is connected through the surface of the threaded tube on the side away from the oil suction pipe.

[0011] Preferably, a connecting pipe is connected through the side of the sealing ring away from the threaded pipe, a first oil filter screen is fixedly installed on one side of the connecting pipe, and a second oil filter screen is attached to one side of the first oil filter screen.

[0012] Preferably, the two sides of the second oil filter screen are fixedly connected to the connecting pipe.

[0013] Preferably, the body is made of aluminum alloy.

[0014] Preferably, the first oil filter screen is made of perforated metal mesh, and the second oil filter screen is made of ultra-fine woven metal mesh.

[0015] Preferably, the damping plate is made of butyl rubber.

[0016] Preferably, the sound-absorbing cotton is made of glass fiber.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This CO2 automotive air conditioning compressor secondary muffler cover, by setting an oil suction component, reduces the amount of oil discharged from the machine body with high-pressure gas, thereby reducing the impact of oil shortage on pump operation. At the same time, through the cooperation between the damping plate, holes and sound-absorbing cotton, the muffler effect can be improved to a certain extent, while not significantly increasing the weight and volume. The specific details are as follows:

[0018] 1. By setting up an oil suction assembly and connecting it to the oil suction pipe, the threaded pipe is threaded into the inside of the oil suction pipe, thus completing the connection between the threaded pipe and the connecting pipe and the oil suction pipe. At the same time, the sealing ring can play a sealing role to a certain extent. The first oil filter screen is made of perforated metal mesh, which allows for pre-treatment and coarse filtration of the oil, intercepting large impurities and protecting the subsequent fine filtration layer. The second oil filter screen is made of ultra-fine metal woven mesh, which allows for better fine filtration of the oil. The first oil filter screen made of perforated metal mesh has strong structural rigidity and is not easily deformed, while the second oil filter screen made of ultra-fine metal woven mesh is oil-resistant, high-temperature resistant, and can be washed and reused. Then, the oil suction pipe and the crankshaft oil suction baffle work together to improve the oil suction rate. The first and second oil filters can reduce the amount of oil discharged from the machine body with high-pressure gas, thereby reducing the impact of oil shortage on pump operation.

[0019] 2. By setting up damping plates, holes, and sound-absorbing cotton, a layer of damping plate is pasted on the inner side of the body. The damping plate is made of butyl rubber, which allows vibration energy to be consumed through the internal friction of the damping plate, effectively attenuating high-frequency noise. The noise control effect is 3-5dB better than simply thickening the aluminum alloy wall, while avoiding excessive weight increase. Under the premise of ensuring strength, several holes are opened on the body, and sound-absorbing cotton is fixedly installed inside the holes. This improves the sound absorption effect through the dual action of "sound insulation + sound absorption" without significantly increasing weight and volume. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;

[0022] Figure 3 This is a schematic cross-sectional view of the oil-absorbing component in this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the damping plate in this utility model;

[0024] Figure 5 This is a schematic diagram of the sound-absorbing cotton structure in this utility model.

[0025] In the diagram: 1. Main body; 2. Oil suction pipe; 3. Oil suction assembly; 301. Threaded pipe; 302. Sealing ring; 303. Connecting pipe; 304. First oil filter screen; 305. Second oil filter screen; 4. Damping plate; 5. Hole; 6. Sound-absorbing cotton. Detailed Implementation

[0026] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 This utility model provides a technical solution: a two-stage silencer cover for a CO2 automotive air conditioning compressor, comprising a body 1, with an oil suction pipe 2 penetrating one side surface of the body 1; several damping plates 4 are fixedly installed around the interior of the body 1, and several holes 5 are opened on one side of the damping plates 4, with sound-absorbing cotton 6 fixedly installed inside the holes 5; it also includes: an oil suction assembly 3 provided on the side surface of the oil suction pipe 2 away from the body 1; wherein, the oil suction assembly 3 includes a threaded pipe 301 threadedly connected to the oil suction pipe 2; wherein, a sealing ring 302 is penetratingly connected on the side surface of the threaded pipe 301 away from the oil suction pipe 2, such as Figure 1-5 As shown, by setting the oil suction component 3, the amount of oil discharged from the machine body with the high-pressure gas can be reduced, thereby reducing the impact of oil shortage on the operation of the pump body. At the same time, through the cooperation between the damping plate 4, the hole 5 and the sound-absorbing cotton 6, the noise reduction effect can be improved to a certain extent, while not significantly increasing the weight and volume.

[0028] A connecting pipe 303 is connected to the side of the sealing ring 302 away from the threaded pipe 301. A first oil filter screen 304 is fixedly installed on one side of the connecting pipe 303. A second oil filter screen 305 is attached to one side of the first oil filter screen 304. Both sides of the second oil filter screen 305 are fixedly connected to the connecting pipe 303. The body 1 is made of aluminum alloy, the first oil filter screen 304 is made of perforated metal mesh, and the second oil filter screen 305 is made of ultra-fine woven metal mesh. Figure 1-3 As shown, by setting up the oil suction assembly 3 and connecting it to the oil suction pipe 2, the threaded pipe 301 is threaded into the inside of the oil suction pipe 2, thus completing the connection between the threaded pipe 301 and the connecting pipe 303 and the oil suction pipe 2. At the same time, the sealing ring 302 can play a sealing role to a certain extent. Meanwhile, the first oil filter screen 304 is made of perforated metal mesh, which allows for pre-treatment and coarse filtration of the oil, intercepting large impurities and protecting the subsequent fine filtration layer. The second oil filter screen 305 is made of ultra-fine metal woven mesh, which allows for better fine filtration of the oil. The first oil filter screen 304, made of perforated metal mesh, has strong structural rigidity and is not easily deformed, while the second oil filter screen 305, made of ultra-fine metal woven mesh, is oil-resistant, high-temperature resistant, and can be washed and reused. Then, the oil suction rate is improved by the combined action of the oil suction pipe 2 and the crankshaft oil suction baffle. The first oil filter screen 304 and the second oil filter screen 305 can reduce the amount of oil discharged from the machine body with high-pressure gas, thereby reducing the impact of oil shortage on pump operation.

[0029] Damping plate 4 is made of butyl rubber, and sound-absorbing cotton 6 is made of glass fiber, such as Figure 4 , 5 As shown, by setting damping plate 4, holes 5 and sound-absorbing cotton 6, a layer of damping plate 4 is pasted on the inner side of the body 1. The damping plate 4 is made of butyl rubber, which allows vibration energy to be consumed through the internal friction of the damping plate 4, effectively attenuating high-frequency noise. The noise control effect is 3-5dB better than simply thickening the aluminum alloy wall, while avoiding excessive weight increase. Under the premise of ensuring strength, several holes 5 are opened on the body 1, and sound-absorbing cotton 6 is fixedly installed inside the holes 5. This improves the sound absorption effect through the dual effect of "sound insulation + sound absorption" without significantly increasing the weight and volume.

[0030] Working principle: Before using this type of CO2 automotive air conditioning compressor secondary muffler cover, it is necessary to check the overall condition of the device to ensure it can function normally. Figure 1 - Figure 5As shown, firstly, by setting up the oil suction assembly 3, when connecting the oil suction assembly 3 to the oil suction pipe 2, the threaded pipe 301 is threaded into the inside of the oil suction pipe 2, thereby completing the connection between the threaded pipe 301 and the connecting pipe 303 and the oil suction pipe 2. At the same time, the sealing ring 302 can play a sealing role to a certain extent. Meanwhile, the first oil filter screen 304 is made of metal perforated mesh, which allows for pre-treatment and coarse filtration of the oil, intercepting large impurities and protecting the subsequent fine filtration layer. The second oil filter screen 305 is made of ultra-fine metal woven mesh, which allows for better fine filtration of the oil. The first oil filter screen 304, made of metal perforated mesh, has strong structural rigidity and is not easily deformed, while the second oil filter screen 305, made of ultra-fine metal woven mesh, is oil-resistant, high-temperature resistant, and can be washed and reused. Then, the oil suction rate is improved by the combined action of the oil suction pipe 2 and the crankshaft oil suction baffle. The first oil filter screen 304 and the second oil filter screen 305 can reduce the amount of oil discharged from the machine body with high-pressure gas, thereby reducing the impact of oil shortage on pump operation.

[0031] Secondly, by setting up damping plates 4, holes 5, and sound-absorbing cotton 6, a layer of damping plates 4 is pasted on the inner side of the main body 1. The damping plates 4 are made of butyl rubber, which allows vibration energy to be consumed through the internal friction of the damping plates 4, effectively attenuating high-frequency noise. The noise control effect is 3-5dB better than simply thickening the aluminum alloy wall, while avoiding excessive weight increase. Under the premise of ensuring strength, several holes 5 are opened on the main body 1, and sound-absorbing cotton 6 is fixedly installed inside the holes 5. This improves the sound absorption effect through the dual effect of "sound insulation + sound absorption" without significantly increasing weight and volume.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A secondary silencer cover for a CO2 automotive air conditioning compressor, comprising a body (1), wherein an oil suction pipe (2) is connected through one side surface of the body (1). Several damping plates (4) are fixedly installed around the inside of the main body (1). Several holes (5) are opened on one side of the damping plate (4). Sound-absorbing cotton (6) is fixedly installed inside the holes (5). Its features are, Also includes: The oil suction pipe (2) is provided with an oil suction component (3) on the side surface away from the main body (1); Among them, the oil suction assembly (3) includes a threaded pipe (301) that is threadedly connected to the oil suction pipe (2). Among them, a sealing ring (302) is connected through the surface of the threaded pipe (301) away from the oil suction pipe (2).

2. The secondary silencer cover for a CO2 automotive air conditioning compressor according to claim 1, characterized in that: The sealing ring (302) is connected to a connecting pipe (303) on the side surface away from the threaded pipe (301). A first oil filter screen (304) is fixedly installed on the inner side of the connecting pipe (303). A second oil filter screen (305) is attached to one side surface of the first oil filter screen (304).

3. The secondary silencer cover for a CO2 automotive air conditioning compressor according to claim 2, characterized in that: The two sides of the second oil filter screen (305) are fixedly connected to the connecting pipe (303).

4. The secondary silencer cover for a CO2 automotive air conditioning compressor according to claim 1, characterized in that: The body (1) is made of aluminum alloy.

5. The secondary silencer cover for a CO2 automotive air conditioning compressor according to claim 2, characterized in that: The first oil filter screen (304) is made of perforated metal mesh, and the second oil filter screen (305) is made of ultra-fine woven metal mesh.

6. The secondary silencer cover for a CO2 automotive air conditioning compressor according to claim 1, characterized in that: The damping plate (4) is made of butyl rubber.

7. The secondary silencer cover for a CO2 automotive air conditioning compressor according to claim 1, characterized in that: The sound-absorbing cotton (6) is made of glass fiber.

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