Compressor and air conditioner

Abstract

The embodiment of the application provides a compressor and an air conditioner, and relates to the technical field of refrigeration equipment.The compressor comprises a shell and a compression device, and a working cavity is formed in the shell; the compression device is arranged in the working cavity, the compression device comprises a shell body and a compression structure, a compression cavity is formed in the shell body, air inlets and air outlets communicating with the compression cavity are formed at two ends of the shell body, the compression structure is arranged at least partially in the shell body and is used for compressing refrigerant in the compression cavity; the shell body is provided with a pressure relief channel and a switch valve in the pressure relief channel, the pressure relief channel is arranged close to the air outlet of the shell body, and the switch valve is used for opening and closing the pressure relief channel; in the scheme of the embodiment of the application, the pressure relief channel and the switch valve are newly added to the shell body of the compression device; when the compressor starts, the switch valve can be opened, so that the compression cavity is relieved of pressure, the load of the compressor is reduced, the current / voltage impact problem when the compressor starts is effectively alleviated, and the reliability of the compressor is improved.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, specifically to a compressor and an air conditioner. Background Technology

[0002] In existing compressor technology, the current / voltage surge during startup remains a persistent constraint on equipment reliability. Traditional solutions often employ star-delta starting or soft starting methods, which, while reducing inrush current to some extent, still have significant drawbacks:

[0003] Star-delta starting requires the coordinated control of multiple sets of contactors and time relays, and a secondary impact of 4-6 times the rated current will still be generated at the moment of switching.

[0004] Although soft starters achieve linear current regulation through thyristors, they require complex power electronic modules and heat dissipation systems, which increases the size and cost of the equipment.

[0005] Both of the above solutions share the common drawbacks of complex control logic and high maintenance difficulty. In particular, they are prone to contact sticking or component overheating under frequent start-stop conditions, which may exacerbate the risk of equipment failure. Utility Model Content

[0006] This application provides a compressor and an air conditioner, which aim to improve the reliability of compressor use in a simpler way.

[0007] On one hand, embodiments of this application provide a compressor, comprising:

[0008] A housing having a working cavity formed therein; and,

[0009] A compression device is disposed within the working chamber. The compression device includes a housing and a compression structure. A compression chamber is formed within the housing, and an air inlet and an air outlet communicating with the compression chamber are formed at both ends of the housing. The compression structure is at least partially disposed within the housing and is used to compress the refrigerant within the compression chamber.

[0010] The housing is provided with a pressure relief channel and a switch valve located in the pressure relief channel. The pressure relief channel is arranged near the air outlet of the housing, and the switch valve is used to open and close the pressure relief channel.

[0011] In some embodiments, the pressure relief channel is located on the side wall of the housing.

[0012] In some embodiments, the side wall of the housing is provided with a pressure relief groove communicating with the compression chamber;

[0013] The compressor also includes a slide valve, which is movably disposed along the extension direction of the pressure relief groove to adjust the opening size of the pressure relief groove;

[0014] The compression device also includes a motor, which drives the compression structure to rotate. Along the axial direction of the motor, the pressure relief channel is opened between the pressure relief groove and the air outlet.

[0015] In some embodiments, the pressure relief channel and the pressure relief groove are arranged opposite each other along the radial direction of the motor.

[0016] In some embodiments, multiple pressure relief channels are provided.

[0017] In some embodiments, the plurality of pressure relief channels are arranged at equal intervals along the axial direction of the motor.

[0018] In some embodiments, a partition structure is provided within the working chamber, defining a hydraulic chamber. The working chamber includes a high-pressure chamber located at the outlet of the compressor and a low-pressure chamber located at the inlet of the compressor. The compressor further includes a drive device and an oil return device, the oil return device being configured in communication with the high-pressure chamber. The drive device includes:

[0019] A piston is disposed in the hydraulic chamber, and the piston rod of the piston is located in the hydraulic chamber and is fitted with an elastic element. The piston rod extends at least partially out of the hydraulic chamber and is fixedly connected to the slide valve.

[0020] The oil return pipeline includes a main oil return line, a first oil return branch line, a second oil return branch line, and several hydraulic branches. One end of the main oil return line is connected to the oil return device, and the other end is connected to the first and second oil return branch lines. The first oil return branch line is connected to the hydraulic chamber, and the second oil return branch line is connected to the pressure relief groove. The several hydraulic branches are respectively connected to the hydraulic chamber and the second oil return branch line; and...

[0021] Multiple on / off valves are respectively located in the first return oil branch, the second return oil branch, and several of the hydraulic branches.

[0022] In some embodiments, a bearing is provided on the outer periphery of the housing at the air outlet and the air inlet, and the main oil return line is also connected to the bearing through an oil supply line.

[0023] In some embodiments, the oil return device is further provided with an oil pump.

[0024] On the other hand, embodiments of this application provide an air conditioner including any of the compressors described above.

[0025] In the embodiment of this application, a pressure relief channel and a switching valve are added to the housing of the compression device. When the compressor starts, the switching valve can be opened to relieve pressure in the compression chamber, reduce the load on the compressor, effectively alleviate the current / voltage surge problem when the compressor starts, and improve the reliability of the compressor. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the compressor provided in some embodiments of this application.

[0028] Explanation of key component symbols:

[0029]

[0030] Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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 application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0034] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0035] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0036] In existing compressor technology, the current / voltage surge during startup remains a persistent constraint on equipment reliability. Traditional solutions often employ star-delta starting or soft starting methods, which, while reducing inrush current to some extent, still have significant drawbacks:

[0037] Star-delta starting requires the coordinated control of multiple sets of contactors and time relays, and a secondary impact of 4-6 times the rated current will still be generated at the moment of switching.

[0038] Although soft starters achieve linear current regulation through thyristors, they require complex power electronic modules and heat dissipation systems, which increases the size and cost of the equipment.

[0039] Both of the above solutions share the common drawbacks of complex control logic and high maintenance difficulty. In particular, they are prone to contact sticking or component overheating under frequent start-stop conditions, which may exacerbate the risk of equipment failure.

[0040] For this, please refer to Figure 1In some embodiments of this application, a compressor 100 is provided, including a housing 10 and a compression device. A working chamber 11 is formed inside the housing 10. The compression device is disposed inside the working chamber 11 and includes a housing 20 and a compression structure 30. A compression chamber is formed inside the housing 20, and an air inlet 21 and an air outlet 22 communicating with the compression chamber are formed at both ends of the housing 20. The compression structure 30 is at least partially disposed inside the housing 20 and is used to compress the refrigerant in the compression chamber. The housing 20 is provided with a pressure relief channel 23 and a switching valve 24 located inside the pressure relief channel 23. The pressure relief channel 23 is arranged adjacent to the air outlet 22 of the housing 20, and the switching valve 24 is used to open and close the pressure relief channel 23.

[0041] It should be noted that the specific implementation of the compression device is not limited. It can be a piston compression device, a scroll compression device, a screw compression device, etc., and is not limited here. In some embodiments, the compression device is a screw compression device, and the corresponding compression structure 30 includes male and female rotors. The compression device also includes a motor 50 that drives the male and female rotors.

[0042] The pressure relief channel 23 is positioned near the air outlet 22 of the housing 20. This means that the pressure relief channel 23 is closer to the air outlet 22 of the housing 20 than the air inlet 21 of the housing 20. The housing 20 may only have the pressure relief channel 23, or it may also have other pressure relief devices, such as pressure relief grooves 25, etc., which are not limited here.

[0043] It is understood that the closer the pressure relief channel 23 is to the air outlet 20 of the housing 20, the lower the gas pressure discharged through the air outlet 20. Therefore, the pressure relief channel 23 is arranged close to the air outlet 22 of the housing 20, which can reduce the gas pressure discharged from the air outlet 20 to a relatively low operating condition.

[0044] In the scheme of this embodiment, a pressure relief channel 23 and a switching valve 24 are added to the housing 20 of the compression device. When the compressor 100 starts, the switching valve 24 can be opened to relieve pressure in the compression chamber, reduce the load on the compressor 100, effectively alleviate the current / voltage surge problem when the compressor 100 starts, and improve the reliability of the compressor 100.

[0045] Furthermore, since the pressure relief channel 23 is located near the air outlet 22 of the housing 20, when it cooperates with other pressure relief structures of the compressor 100, such as the pressure relief groove 25, the pressure relief groove 25 can be fully opened by moving the slide valve 40. At this time, the load of the compressor 100 can be close to the zero-load no-load state. During startup, it can effectively alleviate the current / voltage surge problem when the compressor 100 starts. When the air conditioner or refrigerator is running, the load of the compressor 100 can also be directly brought close to the zero-load no-load state, thereby effectively avoiding the phenomenon of frequent start-stop of the compressor 100 and improving the reliability of the compressor 100.

[0046] The location of the pressure relief channel 23 is not limited. It can be located on the end wall of the housing 20, or on the side wall of the housing 20, etc. There is no limitation here. However, if the pressure relief channel 23 is set on the end wall of the housing 20, due to the limitation of the air outlet 22, on the one hand, the pressure relief channel 23 cannot be opened to a large size, and on the other hand, the pressure relief effect is poor.

[0047] In some embodiments, the pressure relief channel 23 is disposed on the side wall of the housing 20, so that it is not restricted by the air outlet 22, and the area of ​​the pressure relief channel 23 can be made larger to improve the pressure relief effect.

[0048] Furthermore, in some embodiments, the pressure relief channel 23 is elongated and extends upward along the axial direction of the motor 50, which can achieve a larger pressure relief area and a better pressure relief effect.

[0049] In some embodiments, the side wall of the housing 20 is provided with a pressure relief groove 25 communicating with the compression chamber; the compressor 100 also includes a slide valve 40, which is movably arranged along the extension direction of the pressure relief groove 25 to adjust the opening size of the pressure relief groove 25; the compression device also includes a motor 50, which drives the compression structure 30 to rotate, and along the axial direction of the motor 50, the pressure relief channel 23 is opened between the pressure relief groove 25 and the air outlet 22.

[0050] In the scheme of this embodiment, by setting the pressure relief groove 25 and the slide valve 40, the opening size of the pressure relief groove 25 can be adjusted by the movement of the slide valve 40, thereby adjusting the effective compression stroke in the compression chamber and realizing the adjustment of the load of the compressor 100. The pressure relief channel 23 is opened between the pressure relief groove 25 and the air outlet 22. After the pressure relief groove 25 is fully open, the pressure relief channel 23 can be opened and closed to further realize the adjustment of the lower gear and reduce the load of the compressor 100 to a lower level.

[0051] It should be noted that because the slide valve 40 is a mechanical structure that is adjusted by a connecting rod, in order to ensure reliability, it cannot completely leak through the gap. If it does, the slider will be suspended in the air, which will easily cause the connecting rod to deform and the slider to rub against the metal, thus losing its adjustment function. Therefore, the adjustment of the slide valve 40 and the pressure relief groove 25 has a lower limit. By adding the pressure relief channel 23 for opening and closing, a lower adjustment level can be further achieved, reducing the load on the compressor 100 to a lower level.

[0052] Specifically, in some embodiments, depending on the position of the slide valve 40, the load can be adjusted to four levels: 100% load, 75% load, 50% load, and 25% load.

[0053] Of course, in other embodiments, the slide valve 40 and the pressure relief groove 25 can also achieve stepless adjustment between 25% and 100% load. Alternatively, they can achieve stepless adjustment within other ranges, such as 10% to 100%, etc., which are not limited here.

[0054] In some embodiments, the pressure relief channel 23 and the pressure relief groove 25 are arranged opposite each other along the radial direction of the motor 50.

[0055] It should be noted that, since the pressure relief channel 23 is located between the pressure relief groove 25 and the air outlet 22, and the slide valve 40 is generally also equipped with a connecting rod, a portion of which is also located between the pressure relief groove 25 and the air outlet 22, the pressure relief channel 23 and the pressure relief groove 25 are arranged opposite each other along the radial direction of the motor 50. This allows the pressure relief channel 23 to be staggered from the connecting rod, avoiding the influence of the connecting rod on the pressure relief channel 23.

[0056] The number of pressure relief channels 23 is not limited; it can be one, two, three, etc., and is not limited here. In some embodiments, multiple pressure relief channels 23 are provided.

[0057] In the scheme of this embodiment, by setting multiple pressure relief channels 23, it is possible to select to open some of the pressure relief channels 23, open all of the pressure relief channels 23, or close all of the pressure relief channels 23, thereby realizing more precise adjustment of the compressor 100.

[0058] Specifically, in some embodiments, three pressure relief channels 23 are provided, and each of the three pressure relief channels 23 is equipped with a switching valve 24. The three pressure relief channels 23 include a low-load pressure relief channel 23, an ultra-low-load pressure relief channel 23, and a zero-load pressure relief channel 23. In actual operation, after the slide valve 40 of the compressor 100 fully opens the pressure relief groove 25, if the load of the compressor 100 is to be adjusted to a certain point, the low-load pressure relief channel 23 can be opened, so that the load of the compressor 100 can be lower than 25%. If an even lower load is desired, the ultra-low-load pressure relief channel 23 can be opened, thereby further reducing the load of the compressor 100.

[0059] Of course, when you want the compressor 100 to run at near zero load, you can open the zero-load pressure relief channel 23 again. At this time, the compressor 100 can run at near zero load.

[0060] The plurality of pressure relief channels 23 may be connected or spaced apart, which is not limited here. When they are spaced apart, the spacing may be the same or different, which is not limited here.

[0061] In some embodiments, the plurality of pressure relief channels 23 are arranged at equal intervals along the axial direction of the motor 50. This arrangement can, on the one hand, avoid the problem of different intervals, where some of the pressure relief channels 23 are too short to easily affect each other, and on the other hand, make the pressure relief load easier to adjust.

[0062] It should be noted that the driving method of the movement of the slide valve 40 is not limited. It can be driven by a cylinder, an electromagnetic drive, or a motor 50, etc., and no limitation is made here.

[0063] In some embodiments, a spacer structure is provided within the working chamber 11, defining a hydraulic chamber 12. The working chamber 11 includes a high-pressure chamber 13 located at the outlet 22 of the compressor and a low-pressure chamber 14 located at the inlet 21 of the compressor. The compressor 100 further includes a drive device and an oil return device 80. The oil return device 80 is connected to the high-pressure chamber 13. The drive device includes a piston 60, an oil return pipeline, and a plurality of on / off valves 67, and is disposed within the hydraulic chamber 12. The piston rod of the piston 60 is located in the hydraulic chamber 12 and is fitted with an elastic element 61. The piston rod extends at least partially into the hydraulic chamber. The external valve 12 is fixedly connected to the slide valve 40. The oil return pipeline includes a main oil return line 62, a first oil return branch line 63, a second oil return branch line 64, and multiple hydraulic branches. One end of the main oil return line 62 is connected to the oil return device 80, and the other end is connected to the first oil return branch line 63 and the second oil return branch line 64. The first oil return branch line 63 is connected to the hydraulic chamber 12, and the second oil return branch line 64 is connected to the pressure relief groove 25. The multiple hydraulic branches are respectively connected to the hydraulic chamber 12 and the second oil return branch line 64. Multiple on / off valves 67 are respectively disposed in the first oil return branch line 63, the second oil return branch line 64, and the multiple hydraulic branches.

[0064] It should be noted that the oil return device 80 is connected to the high-pressure chamber 13, and one end of the main oil return line 62 is connected to the oil return device 80. Thus, the exhaust pressure in the high-pressure chamber 13 can be used to force the lubricating oil in the oil return device 80 into the main oil return line 62, thereby forming high-pressure lubricating oil in the main oil return line 62.

[0065] The other end of the main oil return line 62 is connected to the first oil return branch line 63 and the second oil return branch line 64, thereby guiding the high-pressure lubricating oil to the first oil return branch line 63 and the second oil return branch line 64. If the first oil return branch line 63 is in the open state at this time, the high-pressure lubricating oil can be guided into the oil pressure chamber 12 through the first oil return branch line 63, so that the oil pressure overcomes the elastic force of the elastic element 61 on the piston 60, drives the piston 60 to move, and then drives the slide valve 40 to move, thereby realizing the adjustment of the opening degree of the pressure relief groove 25.

[0066] After the first return oil branch 63 is closed, the oil in the hydraulic chamber 12 can flow from the several hydraulic branches to the second return oil branch 64, thereby flowing out of the second return oil branch 64, the pressure in the hydraulic chamber 12 drops, and the piston 60 is reset under the action of the elastic member 61.

[0067] In the scheme of this embodiment, by setting the oil return device 80 and the driving device, the exhaust pressure of the compression device can be cleverly used to drive the slide valve 40.

[0068] Specifically, taking several hydraulic branches, including the first hydraulic branch 65 and the second hydraulic branch 66, as an example, the adjustment range of the slide valve 40 is four levels: 100% load, 75% load, 50% load and 25% load.

[0069] When under load, at 25% load, the first return oil branch 63 is closed, the second return oil branch 64 is open, the first oil pressure branch 65 and the second oil pressure branch 66 are closed, and the high-pressure oil from the main return oil line 62 is directly guided to the second return oil branch 64.

[0070] Next, when it is desired to increase the load from 25% to 50%, the first oil return branch 63 is opened to pressurize the oil pressure chamber 12, the on / off valve 67 of the second oil return branch 64 is closed, and the first oil pressure branch 65 is opened, thereby gradually increasing the load of the compressor 100 from 25% to 50%.

[0071] When the load is to be increased from 50% to 75%, the on / off valve 67 of the first hydraulic branch 65 is closed and the on / off valve 67 of the second hydraulic branch 66 is opened, thereby gradually increasing the load of the compressor 100 from 50% to 75%.

[0072] When you want to load the compressor 100 from 75% load to 100% load, close the on / off valve 67 of the second hydraulic branch 66. The pressure in the hydraulic chamber 12 is at its highest, thereby gradually loading the compressor 100 from 75% load to 100% load.

[0073] During the unloading process, firstly, the on / off valve 67 of the first return oil branch 63 is closed, and the on / off valve 67 of the second oil pressure branch 66 is opened, thereby unloading the pressure in the oil pressure chamber 12. After unloading to 75%, the on / off valve 67 of the second oil pressure branch 66 is closed, and the on / off valve 67 of the first oil pressure branch 65 is opened. After unloading to 50%, the on / off valve 67 of the first oil pressure branch 65 is closed, and the on / off valve 67 of the second return oil branch 64 is opened, thereby depressurizing to 25% and returning to the initial state.

[0074] If further unloading of the compressor 100 is required after the pressure has been reduced to 25%, the pressure can be further reduced by opening the switch valve 24 to allow the pressure relief channel 23 to release pressure, thereby reducing the load on the compressor 100 to below 25%.

[0075] In some embodiments, a bearing 70 is provided on the outer periphery of the housing 20 at the air outlet 22 and the air inlet 21, and the oil return main line 62 is also connected to the bearing 70 through the oil supply line 68.

[0076] In the scheme of this embodiment, the main oil return line 62 is also connected to the bearing 70 through the oil supply line 68, so that lubricating oil can be injected into the bearing 70 through the main oil return line 62 to improve the effect of the bearing 70.

[0077] In some embodiments, the oil return device 80 is further provided with an oil pump 90, which is connected to the oil supply pipeline 68.

[0078] It should be noted that, in the embodiments of this application, the load of the compressor 100 can be unloaded to near zero load. When the load of the compressor 100 is near zero load, the pressure in the high-pressure chamber 13 is small. Therefore, it is difficult to pressurize the oil return device 80 into the main oil return line 62.

[0079] Therefore, in the solution of this embodiment, by setting the oil pump 90, even when the compressor 100 is close to zero load, the oil in the oil return device 80 can be pumped into the main oil return line 62 by the oil pump 90.

[0080] In some embodiments, a filter screen 91 is also provided in the high-pressure chamber 13. By providing the filter screen 91, the gasoline mixture exiting the compression device can be separated into gas and liquid, with the gas discharged and the oil flowing down the filter screen 91 and entering the oil return device 80.

[0081] This utility model also proposes an air conditioner, which is equipped with a compressor 100. The specific structure of the compressor 100 is as described in the above embodiments. Since the compressor 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0082] The compressor and air conditioner provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A compressor, characterized in that, include: A housing, wherein a working cavity is formed within the housing; as well as, A compression device is disposed within the working chamber. The compression device includes a housing and a compression structure. A compression chamber is formed within the housing, and an air inlet and an air outlet communicating with the compression chamber are formed at both ends of the housing. The compression structure is at least partially disposed within the housing and is used to compress the refrigerant within the compression chamber. The housing is provided with a pressure relief channel and a switch valve located in the pressure relief channel. The pressure relief channel is arranged near the air outlet of the housing, and the switch valve is used to open and close the pressure relief channel.

2. The compressor according to claim 1, characterized in that, The pressure relief channel is located on the side wall of the housing.

3. The compressor according to claim 1, characterized in that, The side wall of the housing is provided with a pressure relief groove that communicates with the compression chamber; The compressor also includes a slide valve, which is movably disposed along the extension direction of the pressure relief groove to adjust the opening size of the pressure relief groove; The compression device also includes a motor, which drives the compression structure to rotate. Along the axial direction of the motor, the pressure relief channel is opened between the pressure relief groove and the air outlet.

4. The compressor according to claim 3, characterized in that, Along the radial direction of the motor, the pressure relief channel and the pressure relief groove are arranged opposite to each other.

5. The compressor according to claim 3, characterized in that, The pressure relief channel is provided in multiple ways.

6. The compressor according to claim 5, characterized in that, The multiple pressure relief channels are arranged at equal intervals along the axial direction of the motor.

7. The compressor according to claim 3, characterized in that, The working chamber is provided with a partition structure, which defines a hydraulic chamber. The working chamber includes a high-pressure chamber located at the outlet of the compressor and a low-pressure chamber located at the inlet of the compressor. The compressor also includes a drive device and an oil return device. The oil return device is connected to the high-pressure chamber. The drive device includes: A piston is disposed in the hydraulic chamber, and the piston rod of the piston is located in the hydraulic chamber and is fitted with an elastic element. The piston rod extends at least partially out of the hydraulic chamber and is fixedly connected to the slide valve. The oil return pipeline includes a main oil return line, a first oil return branch line, a second oil return branch line, and several hydraulic branches. One end of the main oil return line is connected to the oil return device, and the other end is connected to the first and second oil return branch lines. The first oil return branch line is connected to the hydraulic chamber, and the second oil return branch line is connected to the pressure relief groove. The several hydraulic branches are respectively connected to the hydraulic chamber and the second oil return branch line; and... Multiple on / off valves are respectively located in the first return oil branch, the second return oil branch, and several of the hydraulic branches.

8. The compressor according to claim 7, characterized in that, The housing is provided with bearings on the outer periphery of the air outlet and the air inlet, and the main oil return line is also connected to the bearings through the oil supply line.

9. The compressor according to claim 7, characterized in that, The oil return device is also equipped with an oil pump.

10. An air conditioner, characterized in that, Includes the compressor described in any one of claims 1 to 9.

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