Compressor system, control method of compressor system and air conditioner

Abstract

The present invention relates to the technical field of compressors, and specifically provides a compressor system, a control method for the compressor system, and an air conditioner. To solve the problem that the existing compressor lacks oil and cannot be detected in time, resulting in damage, the compressor system of the present invention includes a compressor, an elastic member, a first contact switch, a first on-off valve, and an oil replenishing device. The oil replenishing device is communicated with the compressor, the first on-off valve is arranged between the oil replenishing device and the compressor, the first contact switch is connected to the first on-off valve, one end of the elastic member is fixedly arranged, and the other end is connected to the bottom of the compressor. The first contact switch is configured to be triggered and open the first on-off valve when the elastic member extends to a first position, and to be disconnected and close the first on-off valve when it retracts to a second position. When the compressor lacks oil, the weight of the corresponding compressor is reduced. When the elastic member extends to the first position, the first contact switch is triggered at this time to open the first on-off valve, and the oil replenishing device replenishes compressor oil to the compressor until the elastic member retracts to the second position.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and specifically provides a compressor system, a control method for the compressor system, and an air conditioner. Background Art

[0002] With the development of the economic level, the application of air conditioners is becoming more and more common. As the core component of an air conditioner, the compressor plays a crucial role in the performance of the air conditioner. Taking a multi-connected air conditioner as an example, the compressor is connected to multiple indoor units at the same time. After the compressor operates for a long time, the oil return capillary between some indoor units and the compressor is prone to blockage, resulting in oil shortage in the compressor, leading to low compressor efficiency, poor energy efficiency, and even damage to the compressor due to oil shortage and cylinder jamming. In the prior art, the oil level in the compressor is measured to determine whether the compressor is short of oil, but the measurement error is large due to inaccurate measurement.

[0003] Correspondingly, there is a need in the art for a new compressor system to solve the problem that the existing compressor lacks oil and cannot be detected in time, resulting in damage. Summary of the Invention

[0004] The present invention aims to solve the above technical problems, that is, to solve the problem that the existing compressor lacks oil and cannot be detected in time, resulting in damage.

[0005] In a first aspect, the present invention provides a compressor system, which includes a compressor, an elastic member, a first contact switch, a first on-off valve, and an oil replenishing device. The oil replenishing device is communicated with the compressor. The first on-off valve is arranged between the oil replenishing device and the compressor. The first contact switch is connected to the first on-off valve. One end of the elastic member is fixedly arranged, and the other end is connected to the bottom of the compressor. The first contact switch is configured to trigger and open the first on-off valve when the elastic member extends to a first position, and disconnect and close the first on-off valve when it retracts to a second position.

[0006] In a preferred technical solution of the above compressor system, the outlet of the oil replenishing device is connected to the intake pipe of the compressor through a first pipeline, the inlet of the oil replenishing device is connected to the exhaust pipe of the compressor through a second pipeline, and the first on-off valve is arranged on the second pipeline.

[0007] In the preferred technical solution of the above compressor system, the compressor system further includes a second contact switch, a second on-off valve, and an oil discharge pipeline. One end of the oil discharge pipeline is communicated with the compressor, and the other end is communicated with the exhaust pipe of the compressor. The second on-off valve is arranged on the oil discharge pipeline, and the second contact switch is connected to the second on-off valve. The second contact switch is configured to trigger and open the second on-off valve when the elastic member retracts to the third position, and disconnect and close the second on-off valve when it extends to the second position.

[0008] In the preferred technical solution of the above compressor system, a check valve is further arranged on the first pipeline.

[0009] In the preferred technical solution of the above compressor system, the compressor system further includes a gas-liquid separator, and the gas-liquid separator is connected to the intake pipe of the compressor.

[0010] The present invention also provides an air conditioner, and the air conditioner is provided with the compressor system described in any one of the above.

[0011] The present invention also provides a control method for a compressor system. The compressor system includes a compressor, an elastic member, a first contact switch, a first on-off valve, and an oil replenishing device. The oil replenishing device is communicated with the compressor. The first on-off valve is arranged between the oil replenishing device and the compressor. The first contact switch is connected to the first on-off valve. One end of the elastic member is fixedly arranged, and the other end is connected to the bottom of the compressor. The first contact switch is configured to trigger and open the first on-off valve when the elastic member extends to the first position, and disconnect and close the first on-off valve when it retracts to the second position. The outlet of the oil replenishing device is connected to the intake pipe of the compressor through a first pipeline, and the inlet of the oil replenishing device is connected to the exhaust pipe of the compressor through a second pipeline. The first on-off valve is arranged on the second pipeline. The compressor system further includes a second contact switch, a second on-off valve, and an oil discharge pipeline. One end of the oil discharge pipeline is communicated with the compressor, and the other end is communicated with the exhaust pipe of the compressor. The second on-off valve is arranged on the oil discharge pipeline, and the second contact switch is connected to the second on-off valve. The second contact switch is configured to trigger and open the second on-off valve when the elastic member retracts to the third position, and disconnect and close the second on-off valve when it extends to the second position. The control method includes:

[0012] After a set time, obtain the position of the elastic member;

[0013] Based on the position of the elastic member, control the normal operation, high-frequency operation, or stop operation of the compressor to enable the pressure oil in the compressor to be in a normal liquid level state;

[0014] Among them, high-frequency operation refers to operating at a frequency higher than that during normal operation.

[0015] In the preferred technical solution of the control method for the above compressor system, the step of "controlling the normal operation, high-frequency operation or stop operation of the compressor based on the position of the elastic member to make the pressure oil in the compressor at a normal liquid level state" further includes:

[0016] When the position of the elastic member is higher than the first position and lasts for a first preset time, control the compressor to stop operating; and / or when the position of the elastic member is lower than the third position and lasts for a second preset time, control the compressor to operate at high frequency.

[0017] In the preferred technical solution of the control method for the above compressor system, the step of "controlling the normal operation, high-frequency operation or stop operation of the compressor based on the position of the elastic member to make the pressure oil in the compressor at a normal liquid level state" further includes:

[0018] When the position of the elastic member is not higher than the first position and not lower than the third position, control the compressor to operate normally.

[0019] The present invention also provides an air conditioner, which is the air conditioner in the control method of the compressor system, and the air conditioner can execute the control method of the compressor described in any one of the above.

[0020] Those skilled in the art can understand that the compressor system of the present invention includes a compressor, an elastic member, a first contact switch, a first on-off valve and an oil replenishing device. The oil replenishing device is communicated with the compressor. The first on-off valve is arranged between the oil replenishing device and the compressor. The first contact switch is connected to the first on-off valve. One end of the elastic member is fixedly arranged, and the other end is connected to the bottom of the compressor. The first contact switch is arranged to trigger and open the first on-off valve when the elastic member extends to the first position, and disconnect and close the first on-off valve when it retracts to the second position.

[0021] In the case of adopting the above technical solution, the compressor of the compressor system of the present invention is connected to an oil replenishing device, which replenishes compressor oil for the compressor when the compressor is short of oil. A first opening and closing valve is provided between the compressor and the oil replenishing device, and the first opening and closing valve controls the oil replenishing device to deliver compressor oil to the compressor. Further, an elastic member is connected to the bottom of the compressor, and the first opening and closing valve is connected to a contact switch. The contact switch is configured to be triggered and open the first opening and closing valve when the elastic member extends to a first position, and disconnect and close the first opening and closing valve when it retracts to a second position. When the oil return capillary between the indoor unit and the compressor is blocked, the oil return of the compressor decreases, and correspondingly the weight of the compressor decreases, causing the elastic member to extend. When the elastic member extends to the first position, it indicates that the compressor is severely short of oil. At this time, the first contact switch is triggered and the first opening and closing valve is opened, and the oil replenishing device delivers compressor oil to the compressor. As the amount of compressor oil in the compressor increases, the weight of the compressor becomes heavier and the elastic member gradually retracts. When the weight of the compressor oil in the compressor meets the standard, the elastic member retracts to the second position. At this time, the first contact switch disconnects and closes the first opening and closing valve, and the oil replenishing device stops delivering compressor oil to the compressor. The present invention applies the gravity of the compressor to the elastic member, and triggers the switch through the expansion and contraction of the elastic member, so that the oil replenishing device delivers compressor oil to the compressor. Compared with controlling the compressor by measuring the oil level height, the present invention directly triggers the opening and closing valve of the oil replenishing device through the change of weight, with higher efficiency and more accurate oil volume adjustment, thus preventing the problem of damage caused by the failure to detect the lack of oil in the compressor in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, in which:

[0023] Figure 1 is a schematic structural diagram of the compressor system of the present invention;

[0024] Figure 2 is an operating schematic diagram of the first contact switch and the second contact switch of the compressor system of the present invention;

[0025] Figure 3 is a main step flow chart of the control method of the compressor system of the present invention;

[0026] Figure 4 is a step flow chart of an implementation manner of the control method of the compressor system of the present invention.

[0027] LIST OF REFERENCE NUMERALS:

[0028] 1. Compressor; 11. Intake pipe of the compressor; 12. Exhaust pipe of the compressor; 2. Elastic member; 21. First position; 22. Second position; 23. Third position; 3. First contact switch; 31. First fixed contact; 32. First movable contact; 4. First on-off valve; 5. Oil replenishing device; 51. First pipeline; 511. Check valve; 52. Second pipeline; 53. Time controller; 6. Second contact switch; 61. Second fixed contact; 62. Second movable contact; 7. Second on-off valve; 8. Oil discharge pipeline; 9. Gas-liquid separator; 10. Oil separator. Detailed implementation manner

[0029] The preferred implementation manners of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention. Those skilled in the art can adjust them as needed to adapt to specific application scenarios.

[0030] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] Such as Figure 1 、 Figure 2As shown in the figure, to solve the problem that the existing compressor lacks oil and cannot be detected in time, resulting in damage, the compressor system of the present invention includes a compressor 1, an elastic member 2, a first contact switch 3, a first opening and closing valve 4, and an oil replenishing device 5. The oil replenishing device 5 is communicated with the compressor 1. The first opening and closing valve 4 is arranged between the oil replenishing device 5 and the compressor 1. The first contact switch 3 is connected to the first opening and closing valve 4. One end of the elastic member 2 is fixedly arranged, and the other end is connected to the bottom of the compressor 1. The first contact switch 3 is set to trigger and open the first opening and closing valve 4 when the elastic member 2 extends to the first position 21, and disconnect and close the first opening and closing valve 4 when it retracts to the second position 22. The first position 21 is the position where the connection point of the elastic member 2 and the compressor 1 is located. In a possible implementation manner, the first contact switch 3 is a first electromagnetic switch. For example, Figure 2 As shown in the figure, the first contact switch 3 includes a first fixed contact 31 and a first moving contact 32. The first fixed contact 31 is fixedly arranged, and the first moving contact 32 is connected to the telescopic end of the elastic member 2. When the elastic member 2 extends to the first position 21, the two contacts of the first contact switch 3 are combined, the first contact switch 3 is triggered, and the first opening and closing valve 4 is opened. Due to the characteristics of the electromagnetic switch, the first fixed contact 31 and the first moving contact 32 can be in a triggered state within a first preset distance. For example, the first preset distance is 5 mm. Until when the elastic member 2 retracts to the second position 22, the two contacts are in a disconnected state, the first contact switch 3 is disconnected, and the first opening and closing valve 4 is closed. Preferably, the first opening and closing valve 4 is a first electromagnetic valve. Preferably, the number of the elastic members 2 is three, and the three elastic members 2 are arranged side by side. Specifically, one end of the three elastic members 2 is fixed, and the other ends are connected together. Preferably, the first opening and closing valve 4 is connected with a time controller 53.

[0033] The advantages of the above setting method are as follows: The compressor 1 of the compressor system of the present invention is communicated with the oil replenishing device 5, and when the compressor 1 lacks oil, it replenishes compressor oil for the compressor 1. A first opening and closing valve 4 is arranged between the compressor 1 and the oil replenishing device 5. The first opening and closing valve 4 controls the oil replenishing device 5 to convey compressor oil to the compressor 1. Further, an elastic member 2 is connected to the bottom of the compressor 1, and the first opening and closing valve 4 is connected with a first contact switch 3. The first contact switch 3 is set to trigger and open the first opening and closing valve 4 when the elastic member 2 extends to the first position 21, and disconnect and close the first opening and closing valve 4 when it retracts to the second position 22. When the oil return capillary between some indoor units and the compressor 1 is blocked, the oil return of the compressor 1 decreases, and correspondingly, the weight of the compressor 1 decreases, causing the elastic member 2 to extend. For example, the oil level height is Figure 1The X in it causes the elastic member 2 to extend to the first position 21 simultaneously, indicating that the compressor 1 is severely lacking in oil. At this time, the first contact switch 3 is triggered and the first on-off valve 4 is opened, and the oil replenishing device 5 conveys compressor oil to the compressor 1. As the amount of compressor oil in the compressor 1 increases, the weight of the compressor 1 becomes heavier, and the elastic member 2 gradually retracts. When the weight of the compressor oil in the compressor 1 meets the standard, for example, the oil level height is Figure 1 Y in it, and at the same time the elastic member 2 retracts to the second position 22. At this time, the first contact switch 3 disconnects and closes the first on-off valve 4, and the oil replenishing device 5 stops conveying compressor oil to the compressor 1. In the present invention, the gravity of the compressor 1 is applied to the elastic member 2, and the switch is triggered by the expansion and contraction of the elastic member 2, so that the oil replenishing device 5 conveys compressor oil to the compressor 1. Compared with controlling the compressor by measuring the oil level height, triggering the on-off valve of the oil replenishing device 5 directly through the change in weight has higher efficiency and more accurate oil volume adjustment, thereby preventing the problem that the compressor 1 is damaged due to lack of oil and not being detected in time. The number of elastic members 2 is three, providing higher expansion and contraction elastic force for the compressor 1. If one of the elastic members 2 is damaged, the other two can still support the compressor 1 to prevent the compressor 1 from falling rapidly and being damaged. The time controller 53 times the opening time of the first on-off valve 4.

[0034] As Figure 1 , Figure 2 shown, in a possible implementation manner, the outlet of the oil replenishing device 5 is connected to the intake pipe 11 of the compressor through the first pipeline 51, and the inlet of the oil replenishing device 5 is connected to the exhaust pipe 12 of the compressor through the second pipeline 52. The first on-off valve 4 is arranged on the second pipeline 52. A one-way valve 511 is also arranged on the first pipeline 51. The compressor system further includes a second contact switch 6, a second on-off valve 7, an oil discharge pipeline 8 and a gas-liquid separator 9. One end of the oil discharge pipeline 8 is communicated with the compressor 1, and the other end is communicated with the exhaust pipe 12 of the compressor. The second on-off valve 7 is arranged on the oil discharge pipeline 8. The second contact switch 6 is connected to the second on-off valve 7. The second contact switch 6 is arranged to trigger and open the second on-off valve 7 when the elastic member 2 retracts to the third position 23, and disconnect and close the second on-off valve 7 when it extends to the second position 22. In a possible implementation manner, the second contact switch 6 is a second electromagnetic switch, as Figure 2As shown, the second contact switch 6 includes a second fixed contact 61 and a second movable contact 62. The second fixed contact 61 is fixedly arranged, and the second movable contact 62 is connected to the telescopic end of the elastic member 2. When the elastic member 2 retracts to the third position 23, the second fixed contact 61 combines with the second movable contact 62, thereby triggering the second contact switch 6 and opening the second on-off valve 7. The second fixed contact 61 and the second movable contact 62 can still be in the triggered state within the second preset distance. For example, the second preset distance is 8 mm. Until the elastic member 2 extends to the second position 22, the second fixed contact 61 and the second movable contact 62 are in the disconnected state, the second contact switch 6 is disconnected, and the second on-off valve 7 is disconnected. Continue to refer to Figure 1 , the gas-liquid separator 9 is connected to the intake pipe 11 of the compressor, and an oil separator 10 is also provided on the exhaust pipe 12 of the compressor.

[0035] The advantages of the above setting method are as follows: The outlet of the oil replenishing device 5 is connected to the intake pipe 11 of the compressor through the first pipeline 51, and the inlet of the oil replenishing device 5 is connected to the exhaust pipe 12 of the compressor through the second pipeline 52. The first on-off valve 4 is arranged on the second pipeline 52. When the oil replenishing device 5 replenishes the compressor 1 with pressure oil, the two contacts of the first contact switch 3 abut and open the first on-off valve 4. A part of the high-temperature and high-pressure gas in the exhaust pipe 12 of the compressor enters the second pipeline 52, and enters the oil replenishing device 5 through the second pipeline 52 to squeeze the internal pressure oil into the first pipeline 51, and enters the compressor 1 through the intake pipe 11 of the compressor through the first pipeline 51 to replenish the compressor 1 with pressure oil. The one-way valve 511 arranged on the first pipeline 51 enables the pressure oil in the oil replenishing device 5 to only flow into the compressor 1, and the gas in the compressor 1 cannot enter the oil replenishing device 5. The gas-liquid separator 9 separates the pressure oil of the gas entering the compressor 1, and the oil separator 10 separates the pressure oil of the gas discharged from the compressor 1.

[0036] Furthermore, the compressor system further includes an oil discharge pipeline 8. One end of the oil discharge pipeline 8 communicates with the compressor 1, and the other end communicates with the exhaust pipe 12 of the compressor. The second on-off valve 7 is arranged on the oil discharge pipeline 8. When the pressure oil in the compressor 1 is too much and exceeds the ideal range, for example, the oil level height is Figure 1Meanwhile, Z in the figure causes the elastic member 2 to retract to the third position 23. The second contact switch 6 is triggered, and the second on-off valve 7 is opened. Under the pressure of the compressor 1, the pressurized oil enters the oil discharge pipeline 8 along with the gas and then enters the exhaust pipe 12 of the compressor, that is, into the refrigerant circulation pipeline. When the oil return capillary between the indoor unit and the compressor 1 is blocked, the compressor 1 discharges more pressurized oil, and the oil return is less than the oil discharge. As a result, the pressurized oil in the compressor 1 gradually decreases. When the pressurized oil in the compressor 1 is too much and exceeds the ideal range, only the excess pressurized oil needs to be discharged into the system. Since the oil return is less than the oil inlet, the pressurized oil in the compressor 1 gradually decreases until it reaches the normal range.

[0037] It should be noted that the above embodiments are only used to illustrate the principle of the present invention and are not intended to limit the protection scope of the present invention. Without departing from the principle of the present invention, those skilled in the art can adjust the above structure so that the present invention can be applied to more specific application scenarios.

[0038] For example, in an alternative embodiment, the elastic member 2 can be a spring or an elastic rubber. Therefore, no restrictions are imposed on the structure and type of the elastic member 2 as long as the elastic member 2 can expand and contract. These do not deviate from the principle of the present invention and thus fall within the protection scope of the present invention.

[0039] For example, in an alternative embodiment, the first contact switch 3 and the first on-off valve 4 can be electrically connected or mechanically connected. Therefore, no restrictions are imposed on the connection manner between the first contact switch 3 and the first on-off valve 4 as long as the first contact switch 3 can control the opening and closing of the first on-off valve 4. The same applies to the second contact switch 6 and the second on-off valve 7. These do not deviate from the principle of the present invention and thus fall within the protection scope of the present invention.

[0040] In addition, the present invention also provides an air conditioner, which has the compressor system described in any of the above embodiments.

[0041] In addition, the present invention also provides a control method for a compressor system, such as Figure 1As shown in the figure, the compressor system includes a compressor 1, an elastic member 2, a first contact switch 3, a first on-off valve 4, and an oil replenishing device 5. The oil replenishing device 5 is communicated with the compressor 1. The first on-off valve 4 is arranged between the oil replenishing device 5 and the compressor 1. The first contact switch 3 is connected to the first on-off valve 4. One end of the elastic member 2 is fixedly arranged, and the other end is connected to the bottom of the compressor 1. The first contact switch 3 is configured to trigger and open the first on-off valve 4 when the elastic member 2 extends to the first position 21, and disconnect and close the first on-off valve 4 when retracting to the second position 22. The outlet of the oil replenishing device 5 is connected to the intake pipe 11 of the compressor through a first pipeline 51, and the inlet of the oil replenishing device 5 is connected to the exhaust pipe 12 of the compressor through a second pipeline 52. The first on-off valve 4 is arranged on the second pipeline 52. The compressor system further includes a second contact switch 6, a second on-off valve 7, and an oil discharge pipeline 8. One end of the oil discharge pipeline 8 is communicated with the compressor 1, and the other end is communicated with the exhaust pipe 12 of the compressor. The second on-off valve 7 is arranged on the oil discharge pipeline 8. The second contact switch 6 is connected to the second on-off valve 7. The second contact switch 6 is configured to trigger and open the second on-off valve 7 when the elastic member 2 retracts to the third position 23, and disconnect and close the second on-off valve 7 when extending to the second position 22. The first on-off valve 4 is further connected to a time controller 53. As Figure 3 shown, the control method includes:

[0042] Step S01: After a set time, obtain the position of the elastic member;

[0043] Step S02: Based on the position of the elastic member, control the compressor to operate normally, operate at a high frequency, or stop operating, so as to make the pressure oil in the compressor in a normal liquid level state.

[0044] As Figure 4 shown, step S02 "Based on the position of the elastic member, control the compressor to operate normally, operate at a high frequency, or stop operating, so as to make the pressure oil in the compressor in a normal liquid level state" further includes:

[0045] Step S021: When the position of the elastic member is higher than the first position and lasts for a first preset time, control the compressor to stop operating;

[0046] Step S022: When the position of the elastic member is lower than the third position and lasts for a second preset time, control the compressor to operate at a high frequency;

[0047] Step S023: When the position of the elastic member is not higher than the first position and not lower than the third position, control the compressor to operate normally.

[0048] As Figure 1As shown, after the compressor 1 runs, after a set time, the position of the elastic member 2 is obtained, and the compressor 1 is controlled to run normally, run at a high frequency, or stop running based on the position of the elastic member 2. For example, the position of the elastic member 2 is detected every 5 minutes. As the amount of pressure oil in the compressor 1 changes, the weight of the compressor 1 changes, and the elastic member 2 expands and contracts, causing the position of the elastic member 2 to change. The normal operation, high-frequency operation, or stop operation of the compressor 1 is controlled according to the position change of the elastic member 2. Further, when the position of the elastic member 2 is higher than the first position 21, it indicates that the weight of the compressor 1 is lighter and the compressor 1 is in an oil-deficient state. The oil replenishing device 5 replenishes pressure oil to the compressor 1, and at the same time, the time controller 53 is turned on. After the first preset time, the position of the elastic member 2 is obtained. If the position of the elastic member 2 is still higher than the first position, that is, when the oil-deficient state lasts for the first preset time. For example, the first preset time is 60 minutes. To prevent the compressor 1 from being damaged due to oil deficiency, the compressor 1 is controlled to stop running. When the position of the elastic member 2 is lower than the third position 23, it indicates that the weight of the compressor 1 is too heavy and the compressor 1 is in a high oil level state. The oil discharge pipeline 8 discharges the pressure oil in the compressor 1. After the second preset time, the position of the elastic member 2 is obtained. It can also be timed by setting an oil discharge time controller on the second on-off valve. If the position of the elastic member 2 is still lower than the third position, that is, when the high oil level state lasts for the second preset time. For example, the second preset time is 20 minutes, the compressor 1 is controlled to run at a high frequency. Here, the high-frequency operation refers to running at a frequency higher than the normal operation frequency. For example, the frequency of the high-frequency operation is 80% of the maximum frequency A of the compressor 1. For example, A is 105 Hz. Thus, the pressure in the compressor 1 can be quickly increased, and then the pressure oil can be quickly discharged from the inside of the compressor 1. As the pressure oil in the compressor 1 gradually decreases, the frequency of the high-frequency operation gradually decreases. For example, the frequency of the high-frequency operation gradually decreases according to the formula A×80% - B, where B gradually increases as the elastic member 2 extends until the position of the elastic member 2 reaches the second position, and the high-frequency operation ends, making the change of the frequency smoother and preventing a large frequency mutation from affecting the indoor heat exchange. When the position of the elastic member 2 is not higher than the first position 21 and not lower than the third position 23, the compressor 1 is controlled to run normally.

[0049] In addition, the present invention also provides an air conditioner, which has the compressor system in the control method of the compressor system in the above embodiment, and the air conditioner can execute the control method of the compressor system in the above embodiment.

[0050] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A compressor system, characterized in that, The compressor system includes a compressor, an elastic member, a first contact switch, a first on-off valve, and an oil replenishing device. The oil replenishing device is in communication with the compressor. The first on-off valve is disposed between the oil replenishing device and the compressor. The first contact switch is connected to the first on-off valve. One end of the elastic member is fixedly arranged, and the other end is connected to the bottom of the compressor. The first contact switch is configured to trigger and open the first on-off valve when the elastic member extends to a first position, and to disconnect and close the first on-off valve when it retracts to a second position. The compressor system further includes a second contact switch, a second on-off valve, and an oil discharge pipeline. One end of the oil discharge pipeline is in communication with the compressor, and the other end is in communication with the exhaust pipe of the compressor. The second on-off valve is disposed on the oil discharge pipeline. The second contact switch is connected to the second on-off valve. The second contact switch is configured to trigger and open the second on-off valve when the elastic member retracts to a third position, and to disconnect and close the second on-off valve when it extends to the second position.

2. The compressor system according to claim 1, characterized in that, The outlet of the oil replenishing device is connected to the intake pipe of the compressor through a first pipeline, and the inlet of the oil replenishing device is connected to the exhaust pipe of the compressor through a second pipeline. The first on-off valve is disposed on the second pipeline.

3. The compressor system according to claim 2, wherein, A check valve is further disposed on the first pipeline.

4. The compressor system according to claim 1, wherein, The compressor system further includes a gas-liquid separator, which is connected to the intake pipe of the compressor.

5. A control method for a compressor system, the compressor system including a compressor, an elastic member, a first contact switch, a first on-off valve, and an oil replenishing device. The oil replenishing device is in communication with the compressor. The first on-off valve is disposed between the oil replenishing device and the compressor. The first contact switch is connected to the first on-off valve. One end of the elastic member is fixedly arranged, and the other end is connected to the bottom of the compressor. The first contact switch is configured to trigger and open the first on-off valve when the elastic member extends to a first position, and to disconnect and close the first on-off valve when it retracts to a second position. The outlet of the oil replenishing device is connected to the intake pipe of the compressor through a first pipeline, and the inlet of the oil replenishing device is connected to the exhaust pipe of the compressor through a second pipeline. The first on-off valve is disposed on the second pipeline. The compressor system further includes a second contact switch, a second on-off valve, and an oil discharge pipeline. One end of the oil discharge pipeline is in communication with the compressor, and the other end is in communication with the exhaust pipe of the compressor. The second on-off valve is disposed on the oil discharge pipeline. The second contact switch is connected to the second on-off valve. The second contact switch is configured to trigger and open the second on-off valve when the elastic member retracts to a third position, and to disconnect and close the second on-off valve when it extends to the second position. It is characterized in that The control method includes: After a set time, obtaining the position of the elastic member; Based on the position of the elastic member, controlling the compressor to operate normally, operate at a high frequency, or stop operating, so as to make the pressure oil in the compressor be in a normal liquid level state; Among them, high-frequency operation refers to operating at a frequency higher than that during normal operation.

6. The control method of the compressor system according to claim 5, wherein, The step of "controlling the normal operation, high-frequency operation or stop operation of the compressor based on the position of the elastic member to make the pressure oil in the compressor in a normal liquid level state" further includes: When the position of the elastic member is higher than the first position and lasts for a first preset time, controlling the compressor to stop operating; and / or, When the position of the elastic member is lower than the third position and lasts for a second preset time, controlling the compressor to operate at high frequency.

7. The control method of the compressor system according to claim 5, characterized in that The step of "controlling the normal operation, high-frequency operation or stop operation of the compressor based on the position of the elastic member to make the pressure oil in the compressor in a normal liquid level state" further includes: When the position of the elastic member is not higher than the first position and not lower than the third position, controlling the compressor to operate normally.

8. An air conditioner, characterized in that, The air conditioner is provided with the compressor system according to any one of claims 1-4.

9. An air conditioner, characterized in that, The air conditioner is the air conditioner according to claim 8, and the air conditioner is configured to be able to execute the control method of the compressor system according to any one of claims 5-7.

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