A compressor and its air conditioner

Abstract

This invention discloses a compressor and its air conditioner. The compressor includes a housing and a motor assembly. The housing has a mounting port, and the motor assembly is installed inside the housing. The socket of the motor assembly is located inside the mounting port. The socket can be connected to the terminal of the plug to conduct electricity between the lead wire and the plug. This invention provides a first sealing ring between the inner wall of the mounting port and the outer wall of the socket. The first sealing ring can prevent the refrigerant inside the housing from leaking from the inner wall of the mounting port to the plug through the gap between the inner wall of the mounting port and the outer wall of the socket. This avoids liquid refrigerant contacting the connection between the plug and the socket, which would reduce the overall insulation resistance of the compressor. This helps to improve the overall reliability of the air conditioner and reduce quality problems such as start-up faults, signal interference, or even failure to start normally. This gives the compressor a high insulation resistance, making it suitable for multi-mode operation in automotive, aerospace, or other applications.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more particularly to a compressor and its air conditioner. Background Technology

[0002] Scroll compressors are characterized by high efficiency, low vibration, compact structure, and light weight, making them an increasingly popular choice for core power components in air conditioning systems. However, in specialized applications such as automotive, fighter jet, and aerospace, compressors and air conditioning systems operate at multiple angles and directions. This can cause live components, such as motor leads and terminals, to become immersed in liquid refrigerant and lubricating oil. If submerged in low-temperature environments, their insulation resistance will further decrease, potentially leading to insulation failure, compressor malfunction, or even electric shock.

[0003] Related technologies disclose a compressor and air conditioner with high insulation resistance. This compressor, by positioning the wiring terminals higher than the suction pipe, ensures a low liquid refrigerant level within the compressor. The liquid refrigerant flows out through the suction pipe to other parts of the system, preventing the refrigerant level from completely submerging the suction pipe opening and thus avoiding contact between the wiring terminals and the liquid refrigerant. This results in a high insulation resistance for the compressor and prevents a decrease in overall insulation resistance due to refrigerant migration and backflow. However, this technology is only suitable for air conditioning applications with a fixed operating posture. In specialized fields such as aerospace and fighter jets, where the fuselage and air conditioning unit (including the compressor) operate in multiple postures, the liquid level within the compressor may submerge the wiring terminals, causing them to contact the liquid refrigerant and reducing the overall insulation resistance of the compressor. Summary of the Invention

[0004] The purpose of this invention is to provide a compressor and its air conditioner, which aims to solve the technical problem of poor insulation caused by liquid refrigerant contacting the wiring terminals during multi-position operation of existing compressors in automotive, aerospace or other applications.

[0005] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides a compressor comprising:

[0006] The outer casing has an mounting port;

[0007] The motor assembly is installed inside the housing. The motor assembly includes a lead wire and a socket. The socket is located inside the mounting port for insertion with the terminal of the plug. A first sealing ring is provided between the inner wall of the mounting port and the outer wall of the socket.

[0008] In some embodiments, a first groove is provided on the inner wall of the mounting port, and a first sealing ring is disposed in the first groove. In the thickness direction of the socket, the outer diameter of the first groove is H1, the thickness of the socket is H2, and the outer diameter of the first sealing ring is D; H1, H2, and D satisfy the following relationship:

[0009] (D-(H1-H2)) / D=A;

[0010] Where 0.1≤A≤0.3.

[0011] In some implementations, the end of the socket facing the plug is provided with an end sealing gasket adapted to the socket.

[0012] In some embodiments, the port facing the plug is provided with a first countersunk hole, and an external seal is provided at the bottom of the first countersunk hole.

[0013] In some implementations, the thickness of the external seal is H3, and the gap between the socket and the plug is H4, wherein H3 and H4 satisfy the following relationship:

[0014] (H3-H4) / H3 = B;

[0015] Where 0.1≤B≤0.3.

[0016] In some embodiments, a second groove is provided at the end of the socket facing the plug, and a second sealing ring is provided in the second groove; and / or, a second groove is provided at the end of the plug facing the socket, and a second sealing ring is provided in the second groove.

[0017] In some embodiments, the socket has a mounting hole with a terminal block that is plugged into it, a lead wire extending into the mounting hole and connected to the terminal block, and a second countersunk hole is provided at the opening of the mounting hole facing the plug, with an opening seal installed in the second countersunk hole and the opening seal having a through hole for the terminal block to pass through.

[0018] In some embodiments, the orifice seal is provided with a multi-channel labyrinth seal structure on the side facing the inner wall of the second countersunk hole; and / or, the wall of the through hole has a multi-channel labyrinth seal structure; and / or, the orifice seal is interference-fitted with the second countersunk hole, and the orifice seal is interference-fitted with the terminal block.

[0019] In some embodiments, a sealing coating is filled between the lead wire and the inner wall of the through hole.

[0020] In some embodiments, an internal seal is fitted on at least one side of the lead-out line located on the sealing coating.

[0021] In some embodiments, the internal seal includes a substrate and an elastic coating applied to the exterior of the substrate.

[0022] In some embodiments, there is a transition fit between the internal seal and the lead wire; and / or, there is a transition fit between the internal seal and the mounting through hole.

[0023] In some embodiments, the inner seal is provided with a multi-channel labyrinth seal structure on the side facing the inner wall of the through hole; and / or, the inner seal is provided with a multi-channel labyrinth seal structure on the side facing the outer wall of the lead wire.

[0024] According to another aspect of this application, embodiments of the present invention also provide an air conditioner that includes a compressor as described above.

[0025] Compared with the prior art, the compressor of the present invention has at least the following beneficial effects:

[0026] This invention discloses a compressor comprising a housing and a motor assembly. The housing has a mounting port, and the motor assembly is mounted inside the housing. A socket for the motor assembly is located within the mounting port, allowing it to connect to the terminals of a plug, thus connecting the lead wire to the plug. A first sealing ring is provided between the inner wall of the mounting port and the outer wall of the socket. This first sealing ring prevents refrigerant inside the housing from leaking from the inner wall of the mounting port to the plug, avoiding contact between the plug and socket by liquid refrigerant, which would reduce the overall insulation resistance of the compressor. This helps improve the overall reliability of the air conditioner, reducing quality problems such as startup malfunctions, signal interference, and even failure to start normally. The compressor possesses excellent high insulation resistance, enabling it to operate in various configurations for automotive, aerospace, or other applications.

[0027] In another aspect, the air conditioner provided by the present invention is manufactured based on the above-mentioned compressor, and its beneficial effects are the same as those of the above-mentioned compressor, which will not be repeated here.

[0028] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A partial cross-sectional view of a compressor provided in an embodiment of the present invention;

[0031] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0032] Figure 3 A cross-sectional view of the main housing of the compressor provided in an embodiment of the present invention;

[0033] Figure 4 A partial cross-sectional view of another compressor provided in an embodiment of the present invention;

[0034] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0035] Figure 6 for Figure 4 Another enlarged view of a specific area;

[0036] Figure 7 for Figure 4 A three-dimensional exploded view of the motor in the diagram;

[0037] Figure 8 A partial cross-sectional view of another compressor provided in an embodiment of the present invention;

[0038] Figure 9 for Figure 8 A magnified view of a portion of the image;

[0039] Figure 10 for Figure 8 A three-dimensional exploded view of the motor in the diagram;

[0040] Figure 11 A partial cross-sectional view of another compressor provided in an embodiment of the present invention;

[0041] Figure 12 for Figure 11 A magnified view of a portion of the image;

[0042] Figure 13 for Figure 11 A three-dimensional exploded view of the motor.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Main housing; 11. Mounting port; 111. First groove; 112. First countersunk hole; 12. Suction port;

[0045] 2. Exhaust cover; 21. Exhaust port;

[0046] 31. Lead wire; 32. Socket; 321. Mounting through hole; 322. Second groove; 323. Second countersunk hole; 324. Terminal block;

[0047] 4. Plug; 41. Terminal;

[0048] 51. First sealing ring; 52. End sealing gasket; 53. External seal; 54. Second sealing ring; 55. Orifice seal; 551. Through hole; 552. Multi-channel labyrinth seal structure; 56. Sealing coating; 57. Internal seal;

[0049] 6. Refrigerant. Detailed Implementation

[0050] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0051] In the description of this invention, it should be clearly stated that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," "horizontal," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are merely for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] Example 1

[0054] like Figure 1-13 As shown, an embodiment of the present invention provides a compressor, the compressor comprising:

[0055] The outer casing has a mounting port 11;

[0056] The motor assembly is installed inside the housing. The motor assembly includes a lead wire 31 and a socket 32. The socket 32 ​​is disposed in the mounting port 11 to be inserted into the terminal 41 of the plug 4. A first sealing ring 51 is provided between the inner wall of the mounting port 11 and the outer wall of the socket 32.

[0057] The outer casing specifically includes a main casing 1 and an exhaust cover 2 covering one end of the main casing 1, which can form a receiving cavity for the outer casing. The mounting port 11 is opened on the main casing 1, and the main casing 1 is also provided with a suction port 12. The exhaust cover 2 is provided with an outlet port 21. The refrigerant 6 is circulated from the outside and enters the compressor through the suction port 12 of the compressor's main casing 1. After being compressed, it is discharged from the outlet port 21 of the exhaust cover 2 to the outside for refrigeration cycle, and so on.

[0058] In this embodiment, the motor assembly is installed inside the housing, and the socket 32 ​​of the motor assembly is located inside the mounting port 11. The socket 32 ​​can be plugged into the terminal 41 of the plug 4 to conduct the lead wire 31 to the plug 4. In this embodiment, a first sealing ring 51 is provided between the inner wall of the mounting port 11 and the outer wall of the socket 32. The first sealing ring 51 can be made of materials such as nitrile rubber or hydrogenated nitrile rubber. The first sealing ring 51 can prevent the refrigerant 6 inside the housing from leaking from the inner wall of the mounting port 11 and the outer wall of the socket 32 ​​to the plug 4, and prevent the liquid refrigerant 6 from contacting the connection between the plug 4 and the socket 32, which would reduce the overall insulation resistance of the compressor. This helps to improve the overall reliability of the air conditioner, reduce quality problems such as start-up faults, signal interference, or even failure to start normally, and enable the compressor to have a good high insulation resistance, so that it can adapt to multi-mode operation in automotive, aerospace or other fields.

[0059] In some embodiments, the inner wall of the mounting opening 11 is provided with a first groove 111, and a first sealing ring 51 is disposed in the first groove 111. In the thickness direction of the socket 32, the outer diameter of the first groove 111 is H1, the thickness of the socket 32 ​​is H2, and the outer diameter of the first sealing ring 51 is D; H1, H2, and D satisfy the following relationship:

[0060] (D-(H1-H2)) / D=A;

[0061] Where 0.1≤A≤0.3.

[0062] In this embodiment, by providing a first groove 111 on the inner wall of the mounting opening 11 and placing the first sealing ring 51 in the first groove 111, the first sealing ring 51 can be prevented from moving between the inner wall of the mounting opening 11 and the outer wall of the socket 32. In the thickness direction of the socket 32, the outer diameter of the first groove 111 is H1, the thickness of the socket 32 ​​is H2, and the outer diameter of the first sealing ring 51 is D; (D-(H1-H2)) / D=A; where 0.1≤A≤0.3, the first sealing ring 51 can be guaranteed to have a good sealing effect between the inner wall of the mounting opening 11 and the outer wall of the socket 32, and at the same time, it is convenient for the user to select a suitable specification of the first sealing ring 51.

[0063] In some embodiments, the end of the socket 32 ​​facing the plug 4 is provided with an end sealing gasket 52 adapted to the socket 32. The end sealing gasket 52 can prevent liquid refrigerant 6 from entering the connection between the socket 32 ​​and the plug 4 after the first sealing ring 51 leaks, thereby further improving the sealing effect and preventing liquid refrigerant 6 from contacting the connection between the plug 4 and the socket 32, which would reduce the overall insulation resistance of the compressor. This helps to improve the overall reliability of the air conditioner, reduce quality problems such as start-up fault reports, signal interference, or even failure to start normally, and enable the compressor to have a good high insulation resistance.

[0064] In some embodiments, the opening 11 facing the plug 4 has a first countersunk hole 112. The bottom of the first countersunk hole 112 is provided with an external seal 53. The external seal 53 and the first sealing ring 51 can prevent the refrigerant 6 inside the housing from leaking from the inner wall of the opening 11 and the outer wall of the socket 32 ​​to the plug 4. This prevents the liquid refrigerant 6 from contacting the connection between the plug 4 and the socket 32, which would reduce the overall insulation resistance of the compressor. This helps to improve the overall reliability of the air conditioner and reduce quality problems such as start-up faults, signal interference, or even failure to start normally, so that the compressor has a good high insulation resistance.

[0065] In some embodiments, the thickness of the external seal 53 is H3, and the gap between the socket 32 ​​and the plug 4 is H4, wherein H3 and H4 satisfy the following relationship:

[0066] (H3-H4) / H3 = B;

[0067] Where 0.1≤B≤0.3.

[0068] In this embodiment, (H3-H4) / H3=B; where 0.1≤B≤0.3, it can ensure that the external seal 53 has a good sealing effect, and at the same time, it is convenient for the user to select an external seal 53 of appropriate specifications.

[0069] In some embodiments, a second groove 322 is provided at the end of the socket 32 ​​facing the plug 4, and a second sealing ring 54 is provided in the second groove 322. The second groove 322 ensures that the second sealing ring 54 is stably installed at the end of the socket 32 ​​facing the plug 4, preventing the second sealing ring 54 from falling off. The second sealing ring is specifically tightened axially. In this embodiment, the second sealing ring 54 can prevent liquid refrigerant 6 from entering the connection between the socket 32 ​​and the plug 4 after the first sealing ring 51 leaks, further improving the sealing effect and preventing liquid refrigerant 6 from contacting the connection between the plug 4 and the socket 32, which would reduce the overall insulation resistance of the compressor. This helps to improve the overall reliability of the air conditioner, reduce quality problems such as start-up faults, signal interference, or even failure to start normally, and enable the compressor to have a good high insulation resistance.

[0070] In some embodiments, a second groove 322 is provided at the end of the plug 4 facing the socket 32, and a second sealing ring 54 is provided in the second groove 322. The second groove 322 can ensure that the second sealing ring 54 is stably installed at the end of the plug 4 facing the socket 32, preventing the second sealing ring 54 from falling off. In this embodiment, the second sealing ring 54 can prevent liquid refrigerant 6 from entering the connection between the socket 32 ​​and the plug 4 after the first sealing ring 51 leaks, further improving the sealing effect and preventing liquid refrigerant 6 from contacting the connection between the plug 4 and the socket 32, which would reduce the overall insulation resistance of the compressor. This helps to improve the overall reliability of the air conditioner, reduce quality problems such as start-up faults, signal interference, or even failure to start normally, and enable the compressor to have a good high insulation resistance.

[0071] In some embodiments, the socket 32 ​​has a mounting hole 321, in which a terminal 324 is provided for insertion into the terminal 41, and a lead wire 31 extends into the mounting hole 321 and is connected to the terminal 324. The mounting hole 321 has a second countersunk hole 323 at the opening of the plug 4, and an opening seal 55 is installed in the second countersunk hole 323. The opening seal 55 has a through hole 551 through which the terminal 41 passes.

[0072] In this embodiment, the lead wire 31 and the terminal 324 are connected by crimping or crimping and welding to ensure reliable conduction. An opening seal 55 is installed in the second countersunk hole 323 through the through hole 321. The opening seal 55 has a through hole 551 for the terminal 41 to pass through. The opening seal 55 can prevent liquid refrigerant 6 from entering the terminal 324 inside the socket 32 ​​and plug 4 from between the socket 32 ​​and plug 4 after the first sealing ring 51 leaks. This further improves the sealing effect and prevents liquid refrigerant 6 from contacting the terminal 324 of the plug 4 and socket 32, which would reduce the overall insulation resistance of the compressor. This helps to improve the overall reliability of the air conditioner and reduce quality problems such as start-up faults, signal interference, or even failure to start normally, so that the compressor has a good high insulation resistance.

[0073] In some embodiments, the side of the mouth seal 55 facing the inner wall of the second countersunk hole 323 is provided with a multi-channel labyrinth seal structure 552, which can further improve the sealing performance.

[0074] In some embodiments, the wall surface of the through-hole 551 has a multi-channel labyrinth seal structure 552. The labyrinth seal structure 552 is used to achieve a labyrinth seal, which can further improve the sealing performance.

[0075] In some embodiments, the orifice seal 55 is interference-fitted with the second countersunk hole 323, and with the terminal 41. The interference fit between the orifice seal 55, the second countersunk hole 323, and the terminal 41 ensures good sealing performance.

[0076] In some embodiments, a sealing coating 56 is filled between the lead wire 31 and the inner wall of the mounting hole 321. The sealing coating 56 may be made of epoxy sealant or the like. The sealing coating 56 prevents the liquid refrigerant 6 from migrating with the lead wire 31 into the lead socket 32 ​​and coming into contact with the terminal block 324.

[0077] In some embodiments, an internal seal 57 is provided on at least one side of the sealing coating 56 on the lead wire 31 to prevent the sealing coating 56 from falling off and improve the reliability of the seal; the internal seal 57 also has a sealing function, further improving the reliability of the seal.

[0078] In some embodiments, the internal seal 57 includes a substrate and an elastic coating applied to the outside of the substrate. The substrate is made of metal, and the elastic coating can be a rubber composite material, such as nitrile rubber or hydrogenated nitrile rubber, and the metal is a carbon steel-like metal material.

[0079] In some embodiments, the internal seal 57 is transitionally fitted to the lead wire 31 to ensure a sealing effect; and / or, the internal seal 57 is transitionally fitted to the mounting through hole 321 to ensure a sealing effect.

[0080] In some embodiments, the inner seal 57 is provided with a multi-channel labyrinth seal structure 552 on the side facing the inner wall of the through hole 321, which can better achieve the labyrinth seal and further prevent the liquid refrigerant 6 from contacting the terminal 324.

[0081] In some embodiments, the inner seal 57 is provided with a multi-channel labyrinth seal structure 552 on the side facing the outer wall of the lead wire 31, which can better achieve the labyrinth seal and further prevent the liquid refrigerant 6 from contacting the terminal 324.

[0082] Example 2

[0083] This invention also provides an air conditioner that includes the compressor of embodiment 1.

[0084] In summary, those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0085] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A compressor, characterized in that, The compressor includes: The outer casing has an mounting port; A motor assembly is installed inside the housing. The motor assembly includes a lead wire and a socket. The socket is provided at the mounting port for insertion into the terminal of a plug. A first sealing ring is provided between the inner wall of the mounting port and the outer wall of the socket. The inner wall of the mounting opening is provided with a first groove, and the first sealing ring is disposed in the first groove. In the thickness direction of the socket, the outer diameter of the first groove is H1, the thickness of the socket is H2, and the outer diameter of the first sealing ring is D; H1, H2, and D satisfy the following relationship: (D - (H1 - H2)) / D = A; Where 0.1≤A≤0.

3.

2. The compressor according to claim 1, characterized in that, The end of the socket facing the plug is provided with an end sealing gasket that is adapted to the socket.

3. The compressor according to claim 1, characterized in that, The mounting port facing the plug has a first countersunk hole, and an external seal is provided at the bottom of the first countersunk hole.

4. The compressor according to claim 3, characterized in that, The thickness of the external seal is H3, and the gap between the socket and the plug is H4. H3 and H4 satisfy the following relationship: (H3-H4) / H3=B; Where 0.1≤B≤0.

3.

5. The compressor according to claim 1, characterized in that, The socket has a second groove at the end facing the plug, and a second sealing ring is disposed in the second groove; and / or, the plug has a second groove at the end facing the socket, and a second sealing ring is disposed in the second groove.

6. The compressor according to claim 1, characterized in that, The socket has a mounting hole, in which a terminal block is provided for insertion into the terminal block. The lead wire extends into the mounting hole and is connected to the terminal block. The mounting hole has a second countersunk hole facing the opening of the plug. An opening seal is installed in the second countersunk hole. The opening seal has a through hole for the terminal block to pass through.

7. The compressor according to claim 6, characterized in that, The orifice seal is provided with a multi-channel labyrinth sealing structure on the side facing the inner wall of the second countersunk hole; and / or, the wall of the through hole has a multi-channel labyrinth sealing structure; and / or, the orifice seal is interference-fitted with the second countersunk hole, and the orifice seal is interference-fitted with the terminal.

8. The compressor according to claim 6, characterized in that, A sealing coating is filled between the lead wire and the inner wall of the through hole.

9. The compressor according to claim 8, characterized in that, An internal seal is fitted on at least one side of the sealing coating on the lead-out line.

10. The compressor according to claim 9, characterized in that, The internal seal includes a substrate and an elastic coating applied to the exterior of the substrate.

11. The compressor according to claim 9, characterized in that, The internal seal is fitted with the lead wire; and / or the internal seal is fitted with the mounting through hole.

12. The compressor according to claim 9, characterized in that, The internal seal is provided with a multi-channel labyrinth sealing structure on the side facing the inner wall of the through hole; and / or, the internal seal is provided with a multi-channel labyrinth sealing structure on the side facing the outer wall of the lead wire.

13. An air conditioner, characterized in that, The air conditioner includes the compressor according to any one of claims 1-12.

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