Air conditioner and air conditioner compressor control method

Abstract

The present invention discloses an air conditioner and an air conditioner compressor control method, the air conditioner includes a refrigerant circulation loop, an outdoor heat exchanger and an indoor heat exchanger, a pressure relief valve, an exhaust sensor, an inner disk sensor, an inner ring sensor, and a controller, wherein the controller is configured to: determine whether the air conditioner is in a Freon recovery state or a fine stop valve blockage state based on the inner disk temperature and the inner ring temperature, the inner disk temperature is obtained by the inner disk sensor, and the inner ring temperature is obtained by the inner ring sensor; when the air conditioner is in a Freon recovery state or a fine stop valve blockage state, control the operating states of the compressor and the pressure relief valve based on the operating time of the compressor and the exhaust temperature, thereby reducing the occurrence of explosion caused by the compressor pressure surge under high temperature and high pressure, thereby improving the safety of the air conditioner.

Description

Technical Field

[0001] The present application relates to the field of air conditioning control, and more specifically, to an air conditioner and an air conditioning compressor control method. Background Art

[0002] As air-conditioning products are constantly updated and upgraded, consumers have higher and higher requirements for the comfort and stability of air-conditioning products. Generally, after the air conditioner is started, as the compressor continues to operate, the refrigerant forms a high-pressure side and a low-pressure side in different areas of the refrigerant pipeline. Usually, the pressure on the high-pressure side needs to be controlled within a reasonable range to ensure the stable operation of the air conditioner and avoid safety hazards caused by excessive pressure.

[0003] In the prior art, when the outdoor unit of the air conditioner is repaired and Freon is recovered, or the operation is improper during installation, the fine stop valve is completely closed, and the coarse stop valve leaks into the air. Under long-term operation, the exhaust pressure is too high. In addition, there is refrigerant oil in the compressor body. Under high temperature and high pressure, the pressure is easy to increase sharply, resulting in the dangerous phenomenon of compressor explosion.

[0004] Therefore, how to reduce the occurrence of air conditioner compressor explosion and improve the safety of air conditioners is a technical problem that needs to be solved. Summary of the invention

[0005] The present invention provides an air conditioner for solving the technical problem in the prior art that the compressor pressure is prone to surge and cause explosion under high temperature and high pressure. The air conditioner comprises:

[0006] The refrigerant circulation loop allows the refrigerant to circulate in the loop consisting of the compressor, condenser, expansion valve and evaporator;

[0007] An outdoor heat exchanger and an indoor heat exchanger, one of which works as a condenser and the other works as an evaporator;

[0008] The pressure relief valve is installed on the bypass pipe between the rough stop valve and the fine stop valve of the outdoor unit and is used to control the pressure in the compressor;

[0009] An exhaust gas sensor, used to detect the exhaust gas temperature of the air conditioner;

[0010] An inner disk sensor, used to detect the inner disk temperature of the air conditioner;

[0011] An inner ring sensor, used for detecting the inner ring temperature of the air conditioner;

[0012] The controller is configured as:

[0013] Determining whether the air conditioner is in a Freon recovery state or a fine stop valve blockage state based on the inner disk temperature and the inner ring temperature;

[0014] When the air conditioner is in a Freon recovery state or a fine stop valve blockage state, the operating states of the compressor and the pressure relief valve are controlled based on the operating time of the compressor and the exhaust temperature.

[0015] In some embodiments, the controller is configured to:

[0016] When the difference between the inner disk temperature and the inner ring temperature is less than or equal to a first preset value, the air conditioner is in a Freon recovery state or a fine stop valve blockage state;

[0017] When the difference between the inner disk temperature and the inner ring temperature is greater than a first preset value, the air conditioner is not in a Freon recovery state or a fine stop valve blockage state.

[0018] In some embodiments, the controller is further configured to:

[0019] When the air conditioner is in a Freon recovery state or a fine stop valve blockage state, determining whether the first operation time of the compressor is greater than or equal to a second preset value;

[0020] If not and the first running time is equal to the third preset value, the compressor is controlled to be powered off and stopped, an alarm message is issued, and manual rapid fluorine collection is performed again;

[0021] If so, the operating states of the compressor and the pressure relief valve are controlled based on the exhaust temperature and the second operating time.

[0022] In some embodiments, the controller is configured to:

[0023] When the air conditioner runs to a second running time, determining whether the exhaust temperature is greater than or equal to a fourth preset value, and whether a second time difference is less than or equal to a fifth preset value, wherein the second time difference is a difference between the second running time and the first running time;

[0024] If not and the second operating time is equal to the third preset value, the compressor is controlled to be powered off and stopped, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again;

[0025] If so, the pressure relief valve is opened, and the operating states of the compressor and the pressure relief valve are controlled based on the exhaust temperature and the third operating time.

[0026] In some embodiments, the controller is configured to:

[0027] When the air conditioner runs to a third running time, determining whether the exhaust temperature is greater than or equal to a fourth preset value, and whether a third time difference is less than or equal to a sixth preset value, wherein the third time difference is a difference between the third running time and the second time difference;

[0028] If not, determining whether the exhaust temperature is less than the fourth preset value;

[0029] If so, the compressor is powered off and shut down, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again.

[0030] In some embodiments, the controller is configured to:

[0031] If not and the exhaust temperature is less than the fourth preset value, reducing the compressor frequency to a preset minimum frequency value at a preset rate, and determining whether the exhaust temperature is greater than a seventh preset value and less than an eighth preset value;

[0032] If not and the exhaust temperature is not less than the fourth preset value, it is determined whether the third operating time is equal to the third preset value.

[0033] In some embodiments, the controller is configured to:

[0034] If the exhaust temperature is greater than the seventh preset value and less than the eighth preset value, the compressor is controlled to be powered off and stopped, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again;

[0035] If the exhaust temperature is less than the seventh preset value or greater than the eighth preset value, and the fourth operating time is equal to the third preset value, the compressor is controlled to be powered off and shut down, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again.

[0036] In some embodiments, the controller is configured to:

[0037] If not, and the exhaust temperature is not less than the fourth preset value, and the third operating time is equal to the third preset value, the compressor is controlled to be powered off and stopped, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again;

[0038] If not and the exhaust temperature is not less than the fourth preset value, and the third operating time is not equal to the third preset value, re-determine whether the exhaust temperature is greater than or equal to the fourth preset value, and whether the third time difference is less than or equal to the sixth preset value.

[0039] In some embodiments, the first running time is less than or equal to the second running time, the second running time is less than or equal to the third running time, the third running time is less than or equal to the fourth running time, and the fourth running time is less than or equal to the third preset value.

[0040] Accordingly, the present invention also proposes an air conditioner compressor control method, which is applied to an air conditioner including a refrigerant circulation loop, an outdoor heat exchanger and an indoor heat exchanger, a pressure relief valve, an exhaust gas sensor, an inner disk sensor, an inner ring sensor, and a controller, and the method includes:

[0041] determining whether the air conditioner is in a Freon recovery state or a fine stop valve blockage state based on the inner disk temperature and the inner ring temperature, the inner disk temperature being obtained by an inner disk sensor, and the inner ring temperature being obtained by an inner ring sensor;

[0042] When the air conditioner is in a Freon recovery state or a fine stop valve blockage state, the operating states of the compressor and the pressure relief valve are controlled based on the operating time of the compressor and the exhaust temperature.

[0043] Compared with the prior art, this application has the following beneficial effects:

[0044] The present invention discloses a method for controlling an air-conditioning compressor, wherein the air-conditioning comprises a refrigerant circulation loop, an outdoor heat exchanger and an indoor heat exchanger, a pressure relief valve, an exhaust gas sensor, an inner disk sensor, an inner ring sensor, and a controller, wherein the controller is configured to: determine whether the air-conditioning is in a state of recovering freon or a state of blocking a fine stop valve based on the inner disk temperature and the inner ring temperature, the inner disk temperature being obtained by the inner disk sensor, and the inner ring temperature being obtained by the inner ring sensor; when the air-conditioning is in a state of recovering freon or a state of blocking a fine stop valve, control the operating states of the compressor and the pressure relief valve based on the operating time of the compressor and the exhaust gas temperature, thereby reducing the occurrence of explosion caused by a sudden increase in compressor pressure under high temperature and high pressure, thereby improving the safety of the air-conditioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 is a flow chart of an air-conditioning compressor control method proposed in an embodiment of the present invention;

[0047] Figure 2 It is a structural schematic diagram of an air conditioner proposed in an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0049] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0050] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0051] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] To further describe the solution of the present application, Figure 2 As shown, in one example of the present application, the air conditioner comprises:

[0053] The refrigerant circulation loop allows the refrigerant to circulate in the loop consisting of the compressor, condenser, expansion valve and evaporator;

[0054] An outdoor heat exchanger and an indoor heat exchanger, one of which works as a condenser and the other works as an evaporator;

[0055] The pressure relief valve is installed on the bypass pipe between the rough stop valve and the fine stop valve of the outdoor unit and is used to control the pressure in the compressor;

[0056] An exhaust gas sensor, used to detect the exhaust gas temperature of the air conditioner;

[0057] An inner disk sensor, used to detect the inner disk temperature of the air conditioner;

[0058] An inner ring sensor, used for detecting the inner ring temperature of the air conditioner;

[0059] The controller is configured as:

[0060] Determining whether the air conditioner is in a Freon recovery state or a fine stop valve blockage state based on the inner disk temperature and the inner ring temperature;

[0061] When the air conditioner is in a Freon recovery state or a fine stop valve blockage state, the operating states of the compressor and the pressure relief valve are controlled based on the operating time of the compressor and the exhaust temperature.

[0062] In the embodiment of the present application, as described in the background technology, the outdoor unit of the air conditioner is currently repaired to recycle Freon or improperly operated during installation, the fine stop valve is completely closed, and the coarse stop valve leaks into the air. Under long-term operation, the exhaust pressure is too high. In addition, the compressor body has refrigeration oil, and the pressure is prone to surge under high temperature and high pressure, resulting in the danger of compressor explosion. In order to solve the above problems, this solution has made modifications to the original air conditioner structure, such as Figure 2 As shown, a bypass pipeline is added at the coarse stop valve and the fine stop valve of the outdoor unit. The pipeline also has a pressure relief valve, which can be opened and closed by control. Under the premise that the fine stop valve is closed, as the compressor runs for a long time, the system pressure continues to increase, and the coarse stop valve inhales air again, which is likely to cause the risk of compressor bursting. At this time, it is necessary to open the pressure relief valve to alleviate the pressure surge trend and reduce the risk of compressor bursting. The operating range of the compressor in this solution is 0<Fmin<80Hz. When the operating frequency is exceeded, the compressor operates abnormally. Therefore, when the air conditioner is in the state of recovering Freon or the state of blocking the fine stop valve, the operating state of the compressor and the pressure relief valve is controlled based on the operating time of the compressor and the exhaust temperature. The pressure of the compressor is timely controlled by adjusting the pressure relief valve, and when the pressure reaches a dangerous level, the compressor is powered off in time to avoid the danger of compressor explosion.

[0063] In order to determine whether the air conditioner is in a Freon recovery state or a fine stop valve blockage state, in some embodiments, the controller is configured to:

[0064] When the difference between the inner disk temperature and the inner ring temperature is less than or equal to a first preset value, the air conditioner is in a Freon recovery state or a fine stop valve blockage state;

[0065] When the difference between the inner disk temperature and the inner ring temperature is greater than a first preset value, the air conditioner is not in a Freon recovery state or a fine stop valve blockage state.

[0066] In this embodiment, when the air conditioner is in the state of recovering Freon or the fine stop valve is blocked, the refrigerant is continuously recovered in the outdoor unit system. However, after a long time, the pressure in the compressor continues to increase, and the pressure at the coarse stop valve continues to decrease. Air can easily enter under negative pressure here, causing the refrigerant, oil, and air in the compressor to circulate. Under continuous high pressure, there is a risk of explosion. To prevent the risk from occurring, we need to monitor whether the air conditioner is in the state of recovering Freon or the state of blocking the fine stop valve. In this solution, the inner disk temperature and the inner ring temperature are used to determine whether the air conditioner is in the state of recovering Freon or the state of blocking the fine stop valve. Valve blocking state, when the difference between the inner disk temperature and the inner ring temperature is less than or equal to the first preset value, the air conditioner is in the state of recovering Freon or the state of fine stop valve blocking; when the difference between the inner disk temperature and the inner ring temperature is greater than the first preset value, the air conditioner is not in the state of recovering Freon or the state of fine stop valve blocking, and the first preset value is generally 0 or 1. In addition, in this embodiment, the controller detects the operating parameters of the air conditioner according to the preset period △T, that is, the controller detects the corresponding operating parameters of the air conditioner such as exhaust temperature, inner disk temperature, inner ring dimension, operating time, etc. every △T, and the preset period △T detection is ≤10s.

[0067] In order to further control the operating states of the compressor and the pressure relief valve, in some embodiments, the controller is configured as follows:

[0068] When the air conditioner is in a Freon recovery state or a fine stop valve blockage state, determining whether the first operation time of the compressor is greater than or equal to a second preset value;

[0069] If not and the first running time is equal to the third preset value, the compressor is controlled to be powered off and stopped, an alarm message is issued, and manual rapid fluorine collection is performed again;

[0070] If so, the operating states of the compressor and the pressure relief valve are controlled based on the exhaust temperature and the second operating time.

[0071] In this embodiment, when the air conditioner is in a Freon recovery state or a fine stop valve is blocked, when the compressor is turned on and runs to the first running time, if the first running time is greater than or equal to the second preset value at this time, it is necessary to control the running state of the compressor and the pressure relief valve through the exhaust temperature and the second running time. If not, and the first running time is equal to the third preset value at this time, the compressor is controlled to be powered off and stopped, and an alarm message is issued, and manual rapid fluorine collection is performed again. If not, and the first running time is not equal to the third preset value at this time, it is necessary to re-judge whether the first running time of the compressor is greater than or equal to the second preset value.

[0072] In order to further control the operating states of the compressor and the pressure relief valve, in some embodiments, the controller is configured as follows:

[0073] When the air conditioner runs to a second running time, determining whether the exhaust temperature is greater than or equal to a fourth preset value, and whether a second time difference is less than or equal to a fifth preset value, wherein the second time difference is a difference between the second running time and the first running time;

[0074] If not and the second operating time is equal to the third preset value, the compressor is controlled to be powered off and stopped, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again;

[0075] If so, the pressure relief valve is opened, and the operating states of the compressor and the pressure relief valve are controlled based on the exhaust temperature and the third operating time.

[0076] In this embodiment, when the compressor runs to the second operating time, it is determined whether the exhaust temperature is greater than or equal to the fourth preset value, and whether the second time difference is less than or equal to the fifth preset value. The second time difference is the difference between the second operating time and the first operating time. If so, the pressure relief valve is opened, and it is necessary to further control the operating status of the compressor and the pressure relief valve based on the exhaust temperature and the third operating time. If not, and the second operating time is equal to the third preset value at this time, the compressor is controlled to be powered off and stopped, and an alarm message is issued, and manual rapid fluorine collection is performed again. If not, and the second operating time is not equal to the third preset value at this time, it is necessary to re-determine whether the exhaust temperature is greater than or equal to the fourth preset value, and whether the second time difference is less than or equal to the fifth preset value.

[0077] In order to further control the operating states of the compressor and the pressure relief valve, in some embodiments, the controller is configured as follows:

[0078] When the air conditioner runs to a third running time, determining whether the exhaust temperature is greater than or equal to a fourth preset value, and whether a third time difference is less than or equal to a sixth preset value, wherein the third time difference is a difference between the third running time and the second time difference;

[0079] If not, determining whether the exhaust temperature is less than the fourth preset value;

[0080] If so, the compressor is powered off and shut down, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again.

[0081] In this embodiment, when the compressor runs to the third operating time, it is determined whether the exhaust temperature is greater than or equal to the fourth preset value, and whether the third time difference is less than or equal to the sixth preset value, and the third time difference is the difference between the third operating time and the second time difference. If so, the compressor is controlled to be powered off and shut down, the pressure relief valve is restored to the closed state, and an alarm message is issued, and manual rapid fluorine collection is performed again. If not, it is necessary to further determine whether the exhaust temperature is less than the fourth preset value.

[0082] In order to further control the operating state of the compressor and the pressure relief valve, in some embodiments, if no and the exhaust temperature is less than the fourth preset value, the compressor frequency is reduced to a preset minimum frequency value at a preset rate, and it is determined whether the exhaust temperature is greater than the seventh preset value and less than the eighth preset value;

[0083] If not and the exhaust temperature is not less than the fourth preset value, it is determined whether the third operating time is equal to the third preset value.

[0084] In this embodiment, when the exhaust temperature is less than the fourth preset value, the compressor frequency is reduced to a preset minimum frequency value at a preset rate, and it is further determined whether the exhaust temperature is greater than the seventh preset value and less than the eighth preset value. When the exhaust temperature is not less than the fourth preset value, it is necessary to further determine whether the third operating time is equal to the third preset value.

[0085] In order to further control the operating state of the compressor and the pressure relief valve, in some embodiments, if the exhaust temperature is greater than the seventh preset value and less than the eighth preset value, the compressor is controlled to be powered off and shut down, the pressure relief valve is restored to the closed state, and an alarm message is issued, and manual rapid fluorine collection is performed again;

[0086] If the exhaust temperature is less than the seventh preset value or greater than the eighth preset value, and the fourth operating time is equal to the third preset value, the compressor is controlled to be powered off and shut down, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again.

[0087] In order to further control the operating state of the compressor and the pressure relief valve, if the exhaust temperature is not less than the fourth preset value, and the third operating time is equal to the third preset value, the compressor is controlled to be powered off and stopped, the pressure relief valve is restored to the closed state, and an alarm message is issued, and manual rapid fluorine collection is performed again;

[0088] If not and the exhaust temperature is not less than the fourth preset value, and the third operating time is not equal to the third preset value, re-determine whether the exhaust temperature is greater than or equal to the fourth preset value, and whether the third time difference is less than or equal to the sixth preset value.

[0089] In order to ensure the normal operation of the compressor and the pressure relief valve, in some embodiments, the first operating time is less than or equal to the second operating time, the second operating time is less than or equal to the third operating time, the third operating time is less than or equal to the fourth operating time, and the fourth operating time is less than or equal to the third preset value.

[0090] It should be noted that this scheme only limits the size of the above variables, and does not limit the specific values ​​of the above variables. The different values ​​of the first operating time, the second operating time, the third operating time, the fourth operating time, and the third preset value do not affect the protection unit of the present invention.

[0091] In order to further illustrate the technical idea of ​​the present invention, the present invention also proposes an air conditioner compressor control method, which is applied to an air conditioner including a refrigerant circulation loop, an outdoor heat exchanger and an indoor heat exchanger, a pressure relief valve, an exhaust sensor, an inner disk sensor, an inner ring sensor, and a controller. Figure 1 As shown, the specific steps of the method are as follows:

[0092] S101, determining whether the air conditioner is in a Freon recovery state or a fine stop valve blockage state based on the inner disk temperature and the inner ring temperature, the inner disk temperature being obtained by an inner disk sensor, and the inner ring temperature being obtained by an inner ring sensor.

[0093] In this solution, a bypass pipeline is added at the coarse stop valve and the fine stop valve of the outdoor unit. The pipeline also has a pressure relief valve, which can be opened and closed by control. Under the premise that the fine stop valve is closed, as the compressor runs for a long time, the system pressure continues to increase. In addition, the coarse stop valve inhales air again, which can easily lead to the risk of compressor explosion. At this time, it is necessary to open the pressure relief valve to alleviate the pressure surge trend and reduce the risk of compressor explosion. Therefore, when the air conditioner is in the state of recovering Freon or the fine stop valve is blocked, the operating state of the compressor and the pressure relief valve is controlled based on the operating time of the compressor and the exhaust temperature. The pressure of the compressor is timely controlled by adjusting the pressure relief valve, and when the pressure reaches a dangerous level, the compressor is powered off in time to avoid the danger of compressor explosion.

[0094] S102, when the air conditioner is in a Freon recovery state or a fine stop valve blockage state, controlling the operating states of the compressor and the pressure relief valve based on the operating time of the compressor and the exhaust temperature.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An air conditioner, characterized in that: include: The refrigerant circulation loop allows the refrigerant to circulate in the loop consisting of the compressor, condenser, expansion valve and evaporator; An outdoor heat exchanger and an indoor heat exchanger, one of which works as a condenser and the other works as an evaporator; The pressure relief valve is installed on the bypass pipe between the rough stop valve and the fine stop valve of the outdoor unit and is used to control the pressure in the compressor; An exhaust gas sensor, used to detect the exhaust gas temperature of the air conditioner; An inner disk sensor, used to detect the inner disk temperature of the air conditioner; An inner ring sensor, used for detecting the inner ring temperature of the air conditioner; The controller is configured as: Determining whether the air conditioner is in a Freon recovery state or a fine stop valve blockage state based on the inner disk temperature and the inner ring temperature; When the air conditioner is in a Freon recovery state or a fine stop valve blockage state, the operating state of the compressor and the pressure relief valve is controlled based on the operating time of the compressor and the exhaust temperature; The controller is configured to: When the air conditioner is in a Freon recovery state or a fine stop valve blockage state, determining whether the first operation time of the compressor is greater than or equal to a second preset value; If not and the first running time is equal to the third preset value, the compressor is controlled to be powered off and stopped, an alarm message is issued, and manual rapid fluorine collection is performed again; If yes, controlling the operating states of the compressor and the pressure relief valve based on the exhaust temperature and the second operating time; When the air conditioner runs to a second running time, determining whether the exhaust temperature is greater than or equal to a fourth preset value, and whether a second time difference is less than or equal to a fifth preset value, wherein the second time difference is a difference between the second running time and the first running time; If not and the second operating time is equal to the third preset value, the compressor is controlled to be powered off and stopped, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again; If yes, opening the pressure relief valve, and controlling the operating states of the compressor and the pressure relief valve based on the exhaust temperature and the third operating time; When the air conditioner runs to a third running time, determining whether the exhaust temperature is greater than or equal to a fourth preset value, and whether a third time difference is less than or equal to a sixth preset value, wherein the third time difference is a difference between the third running time and the second time difference; If not, determining whether the exhaust temperature is less than the fourth preset value; If yes, the compressor is powered off and stopped, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is resumed; If not and the exhaust temperature is less than the fourth preset value, reducing the compressor frequency to a preset minimum frequency value at a preset rate, and determining whether the exhaust temperature is greater than a seventh preset value and less than an eighth preset value; If not and the exhaust temperature is not less than the fourth preset value, it is determined whether the third operating time is equal to the third preset value.

2. The air conditioner according to claim 1, characterized in that: The controller is configured to: When the difference between the inner disk temperature and the inner ring temperature is less than or equal to a first preset value, the air conditioner is in a Freon recovery state or a fine stop valve blockage state; When the difference between the inner disk temperature and the inner ring temperature is greater than a first preset value, the air conditioner is not in a Freon recovery state or a fine stop valve blockage state.

3. The air conditioner according to claim 1, characterized in that: The controller is configured to: If the exhaust temperature is greater than the seventh preset value and less than the eighth preset value, the compressor is controlled to be powered off and stopped, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again; If the exhaust temperature is less than the seventh preset value or greater than the eighth preset value, and the fourth operating time is equal to the third preset value, the compressor is controlled to be powered off and shut down, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again.

4. The air conditioner according to claim 3, characterized in that: The first running time is less than or equal to the second running time, the second running time is less than or equal to the third running time, the third running time is less than or equal to the fourth running time, and the fourth running time is less than or equal to the third preset value.

5. The air conditioner according to claim 1, characterized in that: The controller is configured to: If not, and the exhaust temperature is not less than the fourth preset value, and the third operating time is equal to the third preset value, the compressor is controlled to be powered off and stopped, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again; If not and the exhaust temperature is not less than the fourth preset value, and the third operating time is not equal to the third preset value, re-determine whether the exhaust temperature is greater than or equal to the fourth preset value, and whether the third time difference is less than or equal to the sixth preset value.

6. A method for controlling an air conditioner compressor, characterized in that: The method is applied to an air conditioner including a refrigerant circulation loop, an outdoor heat exchanger and an indoor heat exchanger, a pressure relief valve, an exhaust gas sensor, an inner disk sensor, an inner ring sensor, and a controller, and the method includes: determining whether the air conditioner is in a Freon recovery state or a fine stop valve blockage state based on the inner disk temperature and the inner ring temperature, the inner disk temperature being obtained by an inner disk sensor, and the inner ring temperature being obtained by an inner ring sensor; When the air conditioner is in a Freon recovery state or a fine stop valve blockage state, the operating state of the compressor and the pressure relief valve is controlled based on the operating time of the compressor and the exhaust temperature; The controller is configured to: When the air conditioner is in a Freon recovery state or a fine stop valve blockage state, determining whether the first operation time of the compressor is greater than or equal to a second preset value; If not and the first running time is equal to the third preset value, the compressor is controlled to be powered off and stopped, an alarm message is issued, and manual rapid fluorine collection is performed again; If yes, controlling the operating states of the compressor and the pressure relief valve based on the exhaust temperature and the second operating time; When the air conditioner runs to a second running time, determining whether the exhaust temperature is greater than or equal to a fourth preset value, and whether a second time difference is less than or equal to a fifth preset value, wherein the second time difference is a difference between the second running time and the first running time; If not and the second operating time is equal to the third preset value, the compressor is controlled to be powered off and stopped, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is performed again; If yes, opening the pressure relief valve, and controlling the operating states of the compressor and the pressure relief valve based on the exhaust temperature and the third operating time; When the air conditioner runs to a third running time, determining whether the exhaust temperature is greater than or equal to a fourth preset value, and whether the third time difference is less than or equal to a sixth preset value, wherein the third time difference is the difference between the third running time and the second time difference; If not, determining whether the exhaust temperature is less than the fourth preset value; If yes, the compressor is powered off and stopped, the pressure relief valve is restored to the closed state, an alarm message is issued, and manual rapid fluorine collection is resumed; If not and the exhaust temperature is less than the fourth preset value, reducing the compressor frequency to a preset minimum frequency value at a preset rate, and determining whether the exhaust temperature is greater than the seventh preset value and less than the eighth preset value; If not and the exhaust temperature is not less than the fourth preset value, it is determined whether the third operating time is equal to the third preset value.

Images