Compressor with double-shell structure and refrigeration equipment

Abstract

The utility model provides a kind of compressor and refrigeration equipment with double-layer shell structure, including outer shell, inner shell, motor module and pump body module;The inner shell is located the inside lower end of the outer shell, the motor module is located the inside upper end of the outer shell, the pump body module is located the inside of the inner shell, and is connected with the motor module;Wherein, the outer wall of the inner shell and the inner wall of the corresponding outer shell form sealing area, the outer wall of the outer shell is provided with the vacuum valve for the vacuumization of the sealing area;The utility model can reduce the mechanical wave caused by the vibration of outer shell, thereby reducing mechanical noise and whole machine vibration, improve the comfort of human ear hearing.

Description

Technical Field

[0001] This utility model belongs to the field of compressor technology, specifically relating to a compressor and refrigeration equipment with a double-layer shell structure. Background Technology

[0002] As people's living standards improve, focusing on quality of life and improving home environment has become a consumer trend. For the compressor market, people are no longer satisfied with just cooling effect. The comfort experience, such as noise and ear feel, has gradually become the main evaluation method for compressors. This has also led to the design of quiet and even ultra-quiet air conditioner compressors. Therefore, the development of low-noise compressors is a necessary means for enterprise development.

[0003] The compressor plays a crucial role in an air conditioner, much like its heart; however, it is also one of the main sources of noise. During operation, the vibrations and friction caused by the complex internal mechanical movements of the compressor produce bothersome noise.

[0004] Investigations revealed that existing compressors all use a rigid welded connection between the pump module and the outer casing. During compressor operation, valve plate noise or other mechanical noise is transmitted directly to the outside through vibrations generated by the outer casing, which is very noticeable to the human ear. Summary of the Invention

[0005] To address the shortcomings of the prior art, this utility model provides a compressor and refrigeration equipment with a double-layer shell structure, which can reduce mechanical waves caused by vibration of the outer shell, thereby reducing mechanical noise and overall machine vibration, and improving the comfort of human hearing.

[0006] The technical effects to be achieved by this utility model are realized through the following technical aspects: This utility model provides a compressor with a double-shell structure, including an outer shell, an inner shell, a motor module, and a pump module; The inner housing is located at the lower end inside the outer housing, the motor module is located at the upper end inside the outer housing, and the pump module is located inside the inner housing and connected to the motor module. The outer wall of the inner shell and the inner wall of the corresponding outer shell form a sealing area, and a vacuum valve for evacuating the sealing area is provided on the outer wall of the outer shell.

[0007] In some implementations, the inner wall of the inner housing is welded to the pump body module to ensure the stability of the connection between the inner wall of the inner housing and the pump body module, and to avoid collisions between the pump body module and the inner wall of the inner housing when the pump body module vibrates, which would cause greater noise.

[0008] Some implementations also include partitions; The partition is located inside the outer shell and covers the upper end of the inner shell. The partition has a first through hole and several second through holes for venting. One end of the pump module extends out of the first through hole and connects to the motor module. The second through hole can effectively optimize the exhaust pulsation. In some implementations, the first through hole is located in the middle of the partition, and several second through holes are arranged in a honeycomb pattern around the first through hole, so that gas can be discharged from different positions and the exhaust pulsation is optimized.

[0009] In some implementations, a raised area is formed on the upper surface of the partition near the first through hole, which can guide the backflow of lubricating oil driven by the compressor during operation.

[0010] In some implementations, the area near the outer edge of the upper surface of the partition is recessed downwards, so that the lubricating oil after drainage can flow back to the pump body module through the second through hole in the recessed area. At the same time, the partition structure can also play a certain role in noise reduction.

[0011] In some implementations, the pump body module includes a rotating shaft and an upper support, a cylinder, and a lower support connected sequentially from top to bottom; The upper end of the rotating shaft passes through the lower support, the cylinder body, and the upper support, and then connects to the motor module to realize the linkage between the pump body module and the motor module.

[0012] In some implementations, the pump body module further includes a sound-absorbing cover; The silencer cover is installed on the upper end of the upper support. The silencer cover has several third through holes for exhaust. The gas generated by the pump module is silenced by the silencer cover and then discharged through the third through holes, reducing the impact force of the gas and the noise generated.

[0013] In some implementations, several of the third through holes are located on the outer peripheral surface of the muffler, with the outer peripheral surface of the muffler facing the inner wall of the inner shell. This allows the gas to be discharged through the third through holes on the muffler, first hitting the inner wall of the inner shell, then being discharged through the second through holes on the partition, and finally being transmitted to the upper space of the stator through the stator flow holes. This can reduce the gas pressure difference between the upper and lower spaces of the stator and optimize the exhaust pulsation.

[0014] This application also provides a refrigeration device, including a mounting housing and a compressor as described in any of the above claims. The compressor is disposed within the mounting housing, which can effectively reduce mechanical waves caused by vibration of the housing, reduce mechanical noise and overall machine vibration, and effectively improve the comfort of human hearing. It can also reduce the gas pressure difference between the upper and lower spaces of the stator, optimize exhaust pulsation, and improve product performance.

[0015] In summary, this utility model has at least the following advantages: 1. This utility model provides a compressor with a double-layer shell structure, comprising an outer shell and an inner shell. The pump module is installed inside the inner shell, and the sealing area formed between the outer wall of the inner shell and the corresponding inner wall of the outer shell is evacuated. This effectively reduces the mechanical waves caused by vibration of the outer shell when mechanical noise generated during compressor operation is transmitted from the inner shell to the outer shell, thereby reducing mechanical noise and overall machine vibration and improving auditory comfort. Furthermore, a partition is added inside the outer shell, with several second through-holes for exhaust. Gas is discharged laterally through a third through-hole on the silencer cover, first impacting the inner wall of the inner shell, then exiting through the second through-holes on the partition, and finally transmitted to the upper space of the stator through the stator flow holes. This reduces the gas pressure difference between the upper and lower spaces of the stator and optimizes exhaust pulsation.

[0016] 2. The refrigeration equipment provided by this utility model, after applying the above-mentioned compressor with a double-layer shell structure, can effectively reduce the mechanical waves caused by the vibration of the outer shell, reduce mechanical noise and overall machine vibration, and effectively improve the comfort of human hearing; it can reduce the gas pressure difference between the upper and lower spaces of the stator, optimize exhaust pulsation, and improve product performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the compressor provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the outer shell and inner shell provided in Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the compressor provided in Embodiment 2 of the present invention; Figure 4 A top view of the partition provided in Embodiment 2 of this utility model; Figure 5 This is a front view of the partition provided in Embodiment 2 of this utility model; Figure 6 for Figure 5 Enlarged view of section A; Figure 7 This is a schematic diagram of the compressor provided in Embodiment 3 of this utility model; Figure 8 This is a schematic diagram of the structure of the silencer provided in Embodiment 3 of this utility model; Marked in the image: 100. Outer shell; 200. Inner shell; 300. Motor module; 400, Pump body module; 410, Rotating shaft; 420, Upper support; 430, Cylinder block; 440, Lower support; 450, Silencer cover; 451, Third through hole; 500, Sealed area; 600. Vacuum valve; 700, partition; 710, first through hole; 720, second through hole; 730, protrusion; 740, depression. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more comprehensive description will be given below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] Example 1: Please see Figure 1 and Figure 2A compressor with a double-shell structure includes an outer shell 100, an inner shell 200, a motor module 300, and a pump module 400. The inner shell 200 is located at the lower end inside the outer shell 100, the motor module 300 is located at the upper end inside the outer shell 100, and the pump module 400 is located inside the inner shell 200 and connected to the motor module 300.

[0023] In the compressor, the motor module 300 and the pump module 400 are the core modules that work together. The motor module 300 is the power source of the compressor, and its core function is to convert electrical energy into mechanical energy, providing a continuous and stable driving force for the compression action of the pump module 400. Driven by the motor module 300, the pump module 400 compresses the refrigerant in the refrigeration system, changing the pressure and temperature of the refrigerant, laying the foundation for subsequent condensation, throttling and evaporation cycles.

[0024] In this embodiment, the main innovation lies in the double-layer shell structure. Therefore, the structure of the motor module 300 and the pump module 400 will not be described in detail here. For a better understanding, please refer to the existing technology for the structure and working principle of the motor module 300 and the pump module 400.

[0025] As is known from the background art, a typical compressor has a single-layer casing structure, with the pump module 400 located inside the casing and rigidly welded directly to the inner wall of the outer casing. During compressor operation, valve plate noise or other mechanical noise is transmitted directly to the outside through vibrations generated by the casing, which is very noticeable to the human ear. Based on this, this embodiment provides a compressor with a double-layer casing structure, where the inner casing 200 is located at the lower end inside the outer casing 100, and the pump module 400 is located inside the inner casing 200. Thus, during compressor operation, since the pump module 400 is not directly rigidly welded to the inner wall of the outer casing 100, the vibration transmitted to the outside through the outer casing 100 is reduced. Furthermore, the presence of the inner casing 200 inside the outer casing 100 further reduces mechanical noise and overall machine vibration, effectively improving auditory comfort.

[0026] A sealing region 500 is formed between the outer wall of the inner housing 200 and the inner wall of the corresponding outer housing 100. A vacuum valve 600 for evacuating the sealing region 500 is provided on the outer wall of the outer housing 100.

[0027] In one example, both the inner shell 200 and the outer shell 100 are hollow cylindrical structures, and the outer diameter of the inner shell 200 is smaller than the inner diameter of the outer shell 100. The inner shell 200 is positioned at the lower end of the interior of the outer shell 100, and a gap exists between the outer wall of the inner shell 200 and the inner wall of the outer shell 100. This gap is the sealing area 500. It should be noted that, since the inner shell 200 is a hollow cylindrical structure with upper and lower openings, to achieve the sealing area 500 between the outer wall of the inner shell 200 and the inner wall of the outer shell 100, flanged structures can be provided at the upper and lower openings of the inner shell 200, and these flanged structures can be connected to the inner wall of the outer shell 100. Alternatively, other components can be used to create a sealing connection between the upper and lower ends of the inner shell 200 and the corresponding inner walls of the outer shell 100, thereby enabling the vacuum valve 600 to evacuate the sealing area 500.

[0028] By designing the sealed area 500 to be vacuumed, the mechanical noise generated during the operation of the compressor can be effectively reduced when it is transmitted from the inner shell 200 to the outer shell 100. This reduces the mechanical waves caused by the vibration of the outer shell 100, thereby reducing mechanical noise and overall machine vibration, and effectively improving the comfort of human hearing.

[0029] In some embodiments, the inner wall of the inner housing 200 is welded to the pump module 400 to ensure the stability of the connection between the inner wall of the inner housing 200 and the pump module 400, and to avoid collision with the inner wall of the inner housing 200 when the pump module 400 vibrates, which would cause greater noise.

[0030] Example 2: This embodiment makes further structural optimizations based on Embodiment 1. Please refer to... Figure 1 and Figure 2 Based on the above, refer to Figures 3-6 .

[0031] In this embodiment, the compressor also includes a partition 700; the partition 700 is located inside the outer shell 100 and covers the upper end of the inner shell 200. The partition 700 has a first through hole 710 and several second through holes 720 for exhaust; one end of the pump module 400 extends out of the first through hole 710 and is connected to the motor module 300. The setting of the second through holes 720 can effectively optimize the exhaust pulsation. Specifically, the partition 700 is a circular partition 700. The outer edge of the partition 700 covers the upper end of the inner shell 200 and the inner wall of the corresponding outer shell 100 to form a sealed connection. To increase the sealing effect of the partition 700 on this part, an annular protrusion can be formed by extending the outer edge of the partition 700 downward. The annular protrusion can fit into the gap between the upper end of the inner shell 200 and the inner wall of the corresponding outer shell 100. In addition, interference fit or welding connection can be used to ensure the connection stability between the partition 700 and the upper end of the inner shell 200.

[0032] Normally, during compressor operation, after gas is discharged through the pump module 400, it is directly transmitted to the upper space of the stator through the stator flow holes. This method can easily generate exhaust pulsation. Based on this, the compressor with a double-shell structure provided in this embodiment has a partition 700 inside the outer shell 100. The partition 700 covers the upper end of the inner shell 200, that is, it is located above the pump module 400. After the gas is discharged from the pump module 400, it first passes through several second through holes 720 on the partition 700 and then through the stator flow holes to the upper space of the stator, effectively reducing the gas pressure difference between the upper and lower spaces of the stator and optimizing exhaust pulsation.

[0033] Furthermore, the first through hole 710 is located in the middle of the partition plate 700, and several second through holes 720 are arranged in a honeycomb pattern around the first through hole 710, so that gas can be discharged from different positions and the exhaust pulsation is optimized.

[0034] The first through hole 710 is located in the middle of the partition plate 700 and is used to cooperate with the pump body module 400 to extend from the middle and connect with the motor module 300. Several second through holes 720 are arranged in a honeycomb pattern around the first through hole 710 to disperse and discharge the gas, avoid concentrated gas discharge, reduce the gas pressure difference between the upper and lower spaces of the stator, and optimize the exhaust pulsation.

[0035] It should be noted that the number and shape of the second through holes 720 are not specifically limited in this embodiment, and can be adjusted according to actual needs. Of course, several second through holes 720 can also be arranged in a circumferentially spaced manner, etc.

[0036] In some embodiments, a protrusion 730 is formed on the upper surface of the partition 700 near the first through hole 710. This protrusion 730 is designed to guide the return flow of lubricating oil driven by the compressor during operation.

[0037] The protrusion 730 creates a drop in the upper surface of the partition 700, allowing the lubricating oil to flow downwards under the action of the protrusion 730 and back to the pump body module 400 through several second through holes 720. Specifically, the protrusion 730 can be a slope that slopes downwards from the area near the first through hole 710 toward the outer edge of the partition 700.

[0038] In some embodiments, a recess 740 is formed on the upper surface of the partition 700 near its outer edge, so that the lubricating oil after drainage can flow back to the pump body module 400 through the second through hole 720 in the recess 740 area. At the same time, the partition 700 structure can also play a certain role in noise reduction.

[0039] Example 3: This embodiment has undergone further structural optimization based on embodiment 1 or 2. Please refer to the following: Figures 1-6 Based on the above, refer to Figure 7 and Figure 8 .

[0040] In this embodiment, the pump body module 400 includes a rotating shaft 410 and an upper support 420, a cylinder 430, and a lower support 440 connected sequentially from top to bottom. The upper end of the rotating shaft 410 passes through the lower support 440, the cylinder 430, and the upper support 420 and is connected to the motor module 300 to realize the linkage between the pump body module 400 and the motor module 300.

[0041] Furthermore, the pump module 400 also includes a silencer 450; the silencer 450 is installed on the upper end of the upper support 420, and the silencer 450 has several third through holes 451 for exhaust. The gas generated by the pump module 400 is silenced by the silencer 450 and then discharged through the third through holes 451, effectively reducing the impact force of the gas and the noise generated.

[0042] After the silencer 450 is installed, the gas generated during the operation of the pump module 400 is discharged through the upper support 420 and then enters the silencer 450 for refraction and noise reduction. After being discharged through several third through holes 451, it is transmitted to the upper space of the stator through the stator flow hole, which can reduce the gas pressure difference between the upper and lower spaces of the stator and optimize the exhaust pulsation.

[0043] When the housing 100 is also equipped with a partition 700, the gas generated during the operation of the pump module 400 is discharged through the upper support 420 and enters the silencer 450 for refraction and noise reduction. After being discharged through several third through holes 451, it enters the stator flow hole through several second through holes 720 on the partition 700 and is then transmitted to the upper space of the stator to further optimize the exhaust pulsation.

[0044] In some embodiments, a plurality of third through holes 451 are located on the outer peripheral surface of the muffler 450, with the outer peripheral surface of the muffler 450 relative to the inner wall of the inner housing 200. This allows the gas to be discharged through the third through holes 451 on the muffler 450, first hitting the inner wall of the inner housing 200, then being discharged through the second through hole 720 on the partition 700, and finally being transmitted to the upper space of the stator through the stator flow hole. This can reduce the gas pressure difference between the upper and lower spaces of the stator and optimize the exhaust pulsation.

[0045] It should be noted that in this embodiment, there are no specific restrictions on the number and shape of the third through hole 451. Designing the third through hole 451 to be discharged laterally relative to the muffler 450 allows the gas to first hit the inner wall of the inner shell 200 and then be discharged through the second through hole 720 on the partition 700, further optimizing the exhaust pulsation.

[0046] Example 4: This embodiment also provides a refrigeration device based on embodiments 1-3. Please refer to [link / reference]. Figure 1 and Figure 3 .

[0047] A refrigeration device includes a mounting housing (not shown in the figure) and a compressor according to any one of the embodiments 1-3 above. The compressor is disposed inside the mounting housing. By adopting a compressor with a double-layer housing structure, the mechanical waves caused by the vibration of the outer housing 100 can be effectively reduced, mechanical noise and overall machine vibration can be reduced, and the comfort of human hearing can be effectively improved. In addition, after adding the partition 700, the gas pressure difference between the upper and lower spaces of the stator can be reduced, the exhaust pulsation can be optimized, and the product performance can be improved.

[0048] The above description is merely an example and illustration of the structure of this invention, and while the description is specific and detailed, it should not be construed as limiting the scope of this invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this invention, and these obvious substitutions all fall within the protection scope of this invention.

Claims

1. A compressor having a double-layered housing structure, characterized in that, It includes an outer shell (100), an inner shell (200), a motor module (300), and a pump module (400). The inner housing (200) is located at the lower end inside the outer housing (100), the motor module (300) is located at the upper end inside the outer housing (100), and the pump module (400) is located inside the inner housing (200) and connected to the motor module (300). A sealing region (500) is formed between the outer wall of the inner shell (200) and the inner wall of the corresponding outer shell (100), and a vacuum valve (600) for evacuating the sealing region (500) is provided on the outer wall of the outer shell (100).

2. The compressor with a double-layered housing structure according to claim 1, characterized in that, The inner wall of the inner housing (200) is welded to the pump body module (400).

3. The compressor with a double-layered housing structure according to claim 1, characterized in that, It also includes a partition (700); The partition (700) is located inside the outer shell (100) and covers the upper end of the inner shell (200). The partition (700) has a first through hole (710) and several second through holes (720) for exhaust. One end of the pump body module (400) extends out of the first through hole (710) and is connected to the motor module (300).

4. The compressor with a double-layered housing structure according to claim 3, characterized in that, The first through hole (710) is located in the middle of the partition (700), and a plurality of second through holes (720) are arranged in a honeycomb pattern around the first through hole (710).

5. The compressor with a double-layered housing structure according to claim 3, characterized in that, The upper surface of the partition (700) near the first through hole (710) forms an upward protrusion (730).

6. The compressor with a double-layered housing structure according to claim 5, characterized in that, The upper surface of the partition (700) near its outer edge forms a downward recess (740).

7. The compressor with a double-layered housing structure according to any one of claims 1-6, characterized in that, The pump body module (400) includes a rotating shaft (410) and an upper support (420), a cylinder (430) and a lower support (440) connected from top to bottom. The upper end of the rotating shaft (410) passes through the lower support (440), the cylinder (430) and the upper support (420) and is connected to the motor module (300).

8. The compressor with a double-layered housing structure according to claim 7, characterized in that, The pump body module (400) also includes a soundproof cover (450); The muffler (450) is installed on the upper end of the upper support (420), and the muffler (450) has several third through holes (451) for exhaust.

9. The compressor with a double-layered housing structure according to claim 8, characterized in that, Several of the third through holes (451) are located on the outer peripheral surface of the silencing cover (450), and the outer peripheral surface of the silencing cover (450) is opposite to the inner wall of the inner shell (200).

10. A refrigeration device, characterized in that, Includes a mounting housing and a compressor as described in any one of claims 1-9; The compressor is housed within the mounting housing.

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