Compressor

Abstract

The embodiment of the utility model relates to the technical field of gas compression, in particular to a compressor which comprises a movable disc, a static disc, a motor base, a sealing gasket and a sealing ring. The movable disc comprises a working face and a back face which are oppositely arranged, the working face of the movable disc is meshed with the static disc, and a sealing groove is formed in the back face of the movable disc; the motor base is arranged on the side, away from the static disc, of the movable disc, and a back pressure cavity is formed in the end, facing the movable disc, of the motor base. The sealing gasket is arranged between the movable disc and the motor base, and the sealing gasket covers the back pressure cavity; the sealing ring is arranged in the sealing groove, and the sealing ring abuts against the sealing gasket. A sealing ring is arranged between the sealing gasket and the movable disc, and when the movable disc axially floats, the sealing ring can be tightly attached to the sealing gasket and the movable disc, so that the sealing performance of the backpressure cavity is guaranteed.

Description

Technical Field

[0001] This application relates to the field of gas compression technology. Background Technology

[0002] A scroll compressor is a mechanical device that uses the principle of scroll motion to compress gas. A scroll compressor mainly consists of a moving disc, a stationary disc, and a motor base. The moving disc rotates eccentrically relative to the stationary disc, forming a series of periodically changing compression chambers. A back pressure chamber is provided between the motor base and the moving disc, applying back pressure to the moving disc to balance the pressure applied by the compression chambers. To maintain the seal of the back pressure chamber, a back pressure pad is placed between the motor base and the moving disc. However, the pressure within the pressure chamber changes during the movement of the moving disc. When the back pressure and the pressure within the pressure chamber are unbalanced, a gap may form between the moving disc and the back pressure pad, resulting in insufficient back pressure within the back pressure chamber, thus affecting the operation of the compressor. Utility Model Content

[0003] In view of the above problems, embodiments of this application provide a compressor that overcomes or at least partially solves the above problems.

[0004] According to one aspect of the embodiments of this application, a compressor is provided, including a moving plate, a stationary plate, a motor mount, a gasket, and a sealing ring; the moving plate includes a working surface and a back surface disposed opposite to each other, the working surface of the moving plate meshing with the stationary plate, and a sealing groove provided on the back surface of the moving plate; the motor mount is disposed on the side of the moving plate opposite to the stationary plate, and a back pressure cavity is provided at the end of the motor mount facing the moving plate; the gasket is disposed between the moving plate and the motor mount, and the gasket covers the back pressure cavity; the sealing ring is disposed in the sealing groove, and the sealing ring abuts against the gasket. In an optional embodiment, the compressor further includes an elastic element disposed in the sealing groove, and the elastic element abuts against the side of the sealing ring opposite to the gasket.

[0005] In one alternative embodiment, the compressor further includes a motor shaft, one end of which is rotatably connected to the motor base; the back of the moving plate is provided with a mounting groove, and the other end of the motor shaft passes through the back pressure cavity and is inserted into the mounting groove, the motor shaft being able to drive the moving plate to rotate eccentrically relative to the stationary plate; the sealing groove is arranged around the mounting groove.

[0006] In one alternative embodiment, the back of the moving disc extends with a protrusion toward the back pressure cavity, and the sealing gasket is fitted onto the protrusion; the mounting groove extends from one end of the protrusion toward the back pressure cavity toward the other end of the protrusion.

[0007] In one alternative embodiment, the compressor further includes a bearing bush installed in the mounting groove, and the motor shaft inserted into the bearing bush.

[0008] In one alternative embodiment, the back of the moving plate is further provided with a guide hole, and the side of the motor base facing the moving plate is provided with a guide pin, which is inserted into the guide hole; the diameter of the guide hole is larger than the outer diameter of the guide pin, and the wall of the guide hole can move eccentrically along the guide pin.

[0009] In one alternative embodiment, the number of guide holes and the number of guide pins are both multiple, with the multiple guide holes spaced apart around the outer periphery of the sealing groove, and each guide pin inserted into a corresponding guide hole.

[0010] In one alternative embodiment, the compressor further includes a guide ring fixed within the guide hole, and a guide pin inserted within the guide ring; the inner diameter of the guide ring is larger than the outer diameter of the guide pin, and the inner wall of the guide ring is eccentrically translatable along the guide pin.

[0011] In one alternative embodiment, the back of the moving disc is also provided with a weight-removing hole.

[0012] In an alternative embodiment, the compressor further includes a pressure relief valve disposed on the motor mount and communicating with the back pressure chamber.

[0013] The beneficial effects of this application embodiment include: the motor base has a back pressure cavity at one end facing the moving plate, the sealing gasket is disposed between the moving plate and the motor base, the sealing gasket covers the back pressure cavity, the back of the moving plate has a sealing groove, the sealing ring is disposed in the sealing groove, and the sealing ring abuts against the sealing gasket. When the moving plate floats axially, the sealing ring will be tightly attached to the sealing gasket and the moving plate to ensure the sealing performance of the back pressure cavity, thereby maintaining the back pressure in the back pressure cavity and maintaining the normal operation of the compressor. Attached Figure Description

[0014] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0015] Figure 1 This is a cross-sectional view of the compressor provided in the embodiment of this application;

[0016] Figure 2 yes Figure 1 Enlarged diagram of part B in the middle;

[0017] Figure 3This is a schematic diagram showing that the moving disc is connected to some components according to an embodiment of this application;

[0018] Figure 4 It is along Figure 3 A cross-sectional view of QQ. Detailed Implementation

[0019] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] This application provides a compressor 100, please refer to... Figure 1 and Figure 2 The compressor 100 includes a moving plate 10, a stationary plate 20, a motor mount 30, a sealing gasket 70, and a sealing ring 80. The moving plate 10 has a working surface 101 and a back surface 102 oppositely disposed. The working surface 101 of the moving plate 10 meshes with the stationary plate 20, forming a compression chamber 103 between the moving plate 10 and the stationary plate 20. The back surface 102 of the moving plate 10 is provided with a sealing groove 1021. The motor mount 100 is disposed on the side of the moving plate 10 away from the stationary plate 20, and a back pressure chamber 301 is provided at the end of the motor mount 100 facing the moving plate 10. The sealing gasket 70 is disposed between the moving plate 10 and the motor mount 100, covering the back pressure chamber 301. The sealing ring 80 is disposed within the sealing groove 1021, and abuts against the sealing gasket 70. A sealing ring 80 is provided between the sealing gasket 70 and the moving plate 10. When the moving plate 10 floats axially, the sealing ring 80 will be tightly attached to the sealing gasket 70 and the moving plate 10 to ensure the sealing performance of the back pressure cavity 301.

[0022] In some embodiments, please refer to Figure 1 and Figure 2The compressor 100 also includes a connecting bearing 40, a bearing bush 50, and a power mechanism 60. The connecting bearing 40 and the bearing bush 50 are respectively disposed in the back pressure chamber 301, and the bearing bush 50 is connected to the moving plate 10. One end of the power mechanism 60 is disposed in the back pressure chamber of the motor base 30, and the connecting bearing 40 and the bearing bush 50 are respectively sleeved on the power mechanism 60. The power mechanism 60 is used to drive the moving plate 10 to perform eccentric translation relative to the stationary plate 20, so as to compress the first pressure gas in the compression chamber 103 into a second pressure gas, the pressure value of the second pressure gas being greater than the pressure value of the first pressure gas. The motor base 30, the power mechanism 60, the moving plate 10, and the sealing gasket 70 enclose to form the back pressure chamber 301. The sealing ring 80 is disposed in the sealing groove 1021 and abuts against the sealing gasket 70 to seal the moving plate 10 and the sealing gasket 70. Due to the sealing ring 80, the gas in the back pressure chamber 301 is blocked by the sealing ring 80, which can better maintain the back pressure in the back pressure chamber 301 and maintain the normal operation of the compressor 100.

[0023] The first pressurized gas is a low-pressure gas, and the second pressurized gas is a high-pressure gas. The pressure value of the high-pressure gas can be set according to actual needs.

[0024] It is worth noting that when the moving disk 10 performs an eccentric translational motion relative to the stationary disk 20, the sealing ring 80 moves along with the moving disk 10. Friction occurs between the sealing ring 80 and the sealing gasket 70, and the sealing ring 80 seals both the moving disk 10 and the sealing gasket 70. After the moving disk 10 is formed, there may be gaps between the moving disk 10 and the sealing gasket 70, or gaps may form due to long-term friction between them. The sealing ring 80, placed between the moving disk 10 and the sealing gasket 70, ensures the sealing between them. Furthermore, the sealing ring 80 and the sealing gasket 70 are in elastic contact and are not easily worn during friction, thus effectively preventing gas leakage from the back pressure chamber 301 and maintaining the back pressure within the back pressure chamber 301.

[0025] The power mechanism 60 is used to drive the moving disk 10 to perform eccentric translation relative to the stationary disk 20. Please refer to [link / reference]. Figure 1One implementation of the power mechanism 60 includes a crank 601 and a motor shaft 602. The crank 601 is disposed in the back pressure cavity 301 of the motor base 30. One end of the motor shaft 602 passes through the motor base 30 and is disposed within the back pressure cavity 301, and is connected to the crank 601. A connecting bearing 40 is disposed between the motor shaft 602 and the motor base 30 to allow the motor shaft 602 to be rotatably connected to the motor base 30. A bearing bush 50 is connected between the crank 601 and the moving disk 10 to allow the crank 601 and the moving disk 10 to be fixedly connected. The motor shaft 602 can drive the crank 601 to move, and the crank 601 drives the moving disk 10 to perform eccentric translation.

[0026] In some embodiments, the compressor 100 further includes an elastic element 90, which is disposed between the sealing groove 1021 and the sealing ring 80, and is connected to the sealing ring 80. Due to the elastic element 90, when the moving disc 10 drives the sealing ring 80 to move, the elastic element 90 can provide a floating force along the first direction L1 to the sealing ring 80, thereby achieving a seal between the moving disc 10 and the sealing gasket 70 through the sealing ring 80, preventing gas leakage from the back pressure chamber 301. Furthermore, because the sealing ring 80 can float along the first direction L1, the friction between the sealing ring 80 and the sealing gasket 70 can be reduced, increasing the service life of both the sealing ring 80 and the sealing gasket 70. The first direction L1 is the direction from the opening to the bottom of the sealing groove 1021; the first direction L1 can also be the direction from the bottom to the opening of the sealing groove 1021.

[0027] The elastic element 90 can be set according to actual needs, such as a spring, a sheet, a metal wave element, etc., and is not limited here.

[0028] Please see Figure 3 and Figure 4 The moving plate 10 has a mounting groove 1022 on its back side 102, and a sealing groove 1021 is arranged around the mounting groove 1022. The bearing bush 50 is disposed in the mounting groove 1022. The outer dimensions of the bearing bush 50 are smaller than those of the bearing, so the mounting groove 1022 that needs to be opened on the moving plate 10 is smaller. This provides better machining space for the sealing groove 1021 that is arranged around the mounting groove 1022, and improves the machining convenience of the moving plate 10.

[0029] Please refer to the following: Figure 2 , Figure 3 and Figure 4The back surface 102 of the moving plate 10 has a protrusion 1023, the mounting groove 1022 is located on the protrusion 1023, the sealing gasket 70 is arranged around the protrusion 1023, and the sealing groove 1021 is arranged around the protrusion 1023.

[0030] In some embodiments, a guide hole 104 is formed on the back surface 102 of the movable disk 10, and a guide pin (not shown) is provided on the side of the motor base 30 facing the movable disk 10, the guide pin being inserted into the guide hole 104. The diameter of the guide hole 104 is larger than the outer diameter of the guide pin, and the wall of the guide hole 104 can move eccentrically along the guide pin. With this arrangement, the movement of the movable disk 10 is restricted by the guide pin, preventing the movable disk 10 from rotating.

[0031] In some embodiments, there are multiple guide holes 104 and multiple guide pins. The multiple guide holes 104 are spaced apart and arranged around the outer periphery of the sealing groove 1021, and each guide pin is inserted into a corresponding guide hole 104. It is understood that the multiple guide pins pass through the sealing gasket 70 so that the sealing gasket 70 is radially fixed to the motor base 30, preventing the sealing gasket 70 from rotating with the moving plate 10.

[0032] In some embodiments, a guide ring 105 is provided in the guide hole 104, the guide ring 105 is fixed in the guide hole 104, the guide pin is inserted in the guide ring 105, the inner diameter of the guide ring 105 is larger than the outer diameter of the guide pin, and the inner wall of the guide ring 105 can move eccentrically along the guide pin.

[0033] In some embodiments, a weight-relief hole 106 is provided on the back side 102 of the moving disk 10. The weight-relief hole 106 is located on one side of the back side 102 of the moving disk 10. The weight-relief hole 106 is used to keep the center of gravity of the moving disk 10 coaxial with the motor shaft 602 of the motor, thereby increasing the stability of the compressor 100 operation.

[0034] In some embodiments, there are multiple de-weighting holes 106, and the multiple de-weighting holes 106 are spaced apart from the guide holes 104. By reasonably setting the de-weighting holes 106 and the guide holes 104, when the space size of the back side 102 of the moving disk 10 is limited, the de-weighting holes 106 can be set to keep the center of gravity of the moving disk 10 coaxial with the motor shaft 602 of the motor, and the guide holes 104 can be set to be used for guide pin setting to prevent the moving disk 10 from rotating.

[0035] In some embodiments, please refer to Figure 1 or Figure 2The motor mount 30 is also equipped with a pressure relief valve 302, which is connected to the back pressure chamber 301, thereby venting the pressure in the back pressure chamber 301 to the outside of the compressor 100. Specifically, the pressure relief valve 302 is connected to the side of the motor mount 30 opposite to the moving plate 10, thereby venting the pressure in the back pressure chamber 301 to the outside of the motor mount 30. The pressure relief valve 302 is used to adjust the pressure in the back pressure chamber 301 to create a pressure difference between the back pressure chamber 301 and the compression chamber 103, enabling the moving plate 10 to float.

[0036] In this embodiment, the motor base 100 has a back pressure cavity 301 at one end facing the moving disk 10. The sealing gasket 70 is disposed between the moving disk 10 and the motor base 100, and the sealing gasket 70 covers the back pressure cavity 301. The sealing ring 80 is disposed in the sealing groove 1021, and the sealing ring 80 abuts against the sealing gasket 70. When the moving disk 10 floats axially, the sealing ring 80 will be tightly attached to the sealing gasket 70 and the moving disk 10 to ensure the sealing performance of the back pressure cavity 301.

[0037] It should be noted that while preferred embodiments of this application are provided in the specification and accompanying drawings, this application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this application; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this application. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this application's specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A compressor, characterized in that, include: Moving plate, stationary plate, motor base, gasket and sealing ring; The moving disc includes a working surface and a back surface that are arranged opposite to each other. The working surface of the moving disc meshes with the stationary disc, and a compression cavity is formed between the moving disc and the stationary disc. A sealing groove is provided on the back surface of the moving disc. The motor mount is located on the side of the moving plate away from the stationary plate, and the end of the motor mount facing the moving plate is provided with a back pressure cavity; The sealing gasket is disposed between the moving plate and the motor base, and the sealing gasket covers the back pressure chamber; The sealing ring is disposed in the sealing groove, and the sealing ring abuts against the sealing gasket; The moving plate has multiple guide holes on its back side, which are spaced around the outer periphery of the sealing groove. The motor base has multiple guide pins on the side facing the moving plate. Each guide pin is inserted into a corresponding guide hole, and the multiple guide pins pass through the sealing gasket so that the sealing gasket is radially fixed to the motor base.

2. The compressor according to claim 1, characterized in that, The compressor also includes an elastic element disposed within the sealing groove, the elastic element abutting against the side of the sealing ring opposite to the sealing gasket.

3. The compressor according to claim 1, characterized in that, The compressor also includes a motor shaft, one end of which is rotatably connected to the motor base; The back of the moving plate is provided with a mounting groove, and the other end of the motor shaft passes through the back pressure cavity and is inserted into the mounting groove. The motor shaft can drive the moving plate to rotate eccentrically relative to the stationary plate. The sealing groove is arranged around the mounting groove.

4. The compressor according to claim 3, characterized in that, The back of the moving plate has a protrusion extending toward the back pressure cavity, and the sealing gasket is fitted onto the protrusion. The mounting groove extends from one end of the protrusion toward the back pressure cavity toward the other end of the protrusion.

5. The compressor according to claim 3, characterized in that, The compressor also includes a bearing bush, which is installed in the mounting groove, and the motor shaft is inserted into the bearing bush.

6. The compressor according to claim 5, characterized in that, The diameter of the guide hole is larger than the outer diameter of the guide pin, and the wall of the guide hole can move eccentrically along the guide pin.

7. The compressor according to claim 6, characterized in that, The compressor also includes a guide ring, which is fixed in the guide hole, and the guide pin is inserted into the guide ring; The inner diameter of the guide ring is larger than the outer diameter of the guide pin, and the inner wall of the guide ring can move eccentrically along the guide pin.

8. The compressor according to claim 1, characterized in that, The back of the moving plate is also provided with a weight-removing hole.

9. The compressor according to any one of claims 1-8, characterized in that, The compressor also includes a pressure relief valve, which is disposed on the motor base and communicates with the back pressure chamber.

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