Air conditioner

Abstract

The invention provides an air conditioner which comprises a controller, and the controller is configured to record a first pressure value corresponding to a compressor during temperature control shutdown when a temperature control shutdown signal is received; determining a target pressure value of the compressor after the temperature control shutdown according to the first pressure value and a preset pressure value; the compressor is controlled to operate according to the target pressure value after the temperature control shutdown, and whether the outdoor unit does not receive the temperature control startup signal within the preset time or not is monitored; and the running state of the compressor is controlled according to the monitoring result, the target pressure value of the compressor after the next temperature control shutdown is adjusted, and the compressor is controlled to run according to the target pressure value of the compressor after the next temperature control shutdown, so that the starting and stopping frequency of the compressor is reduced, the compressor runs more smoothly, and the service life of the compressor is prolonged. And therefore, the problems of energy consumption increase and equipment loss caused by unstable operation of the compressor are reduced, and the effects of saving energy and prolonging the service life of the compressor are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner. Background Art

[0002] At present, there are some non-communication air conditioners on the market. This type of air conditioner only sends electrical signals to the indoor and outdoor units of the air conditioner through the wired controller to control the start and stop of the indoor and outdoor units. For example, after receiving the power-on signal, the indoor and outdoor units operate according to their respective control logic. The outdoor unit cannot obtain the indoor unit information, and the compressor can only operate at the preset frequency. At this time, the compressor will start and stop frequently, resulting in increased energy consumption of the air conditioner and shortened compressor life.

[0003] In the existing technology, on the one hand, the operating frequency after the next temperature-controlled startup can be controlled based on the compressor's working time and operating frequency before the temperature-controlled shutdown. However, this method cannot guarantee accurate adjustment of the indoor temperature, and frequent starts and stops will still occur. On the other hand, the operating state of the compressor can be controlled according to the target pressure. However, under this control method, how to improve the compressor's smoother and more energy-efficient operation mode has become an urgent problem to be solved. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, one purpose of the present invention is to propose an air conditioner that can reduce the start and stop frequency of the compressor, making the compressor run more smoothly, thereby reducing the increased energy consumption and equipment loss caused by unstable compressor operation, thereby achieving the effect of energy saving and extending the service life of the compressor.

[0006] Therefore, a second object of the present invention is to provide a control method for an air conditioner.

[0007] To achieve the above-mentioned object, an embodiment of a first aspect of the present invention provides an air conditioner, comprising: an indoor unit and an outdoor unit, wherein the indoor unit and the outdoor unit form a refrigerant circulation system via a connecting pipe, so that the refrigerant circulates through a loop consisting of a compressor, a four-way valve, a condenser, a throttling device, and an evaporator, wherein one of the condenser and the evaporator is an outdoor heat exchanger, and the other is an indoor heat exchanger; A wired controller, used for sending a temperature-controlled power-on signal or a temperature-controlled power-off signal to the outdoor unit; A pressure sensor, used to detect the pressure value corresponding to the compressor; A controller configured to: When the temperature control shutdown signal is received, the first pressure value of the compressor corresponding to the temperature control shutdown is recorded; Determining a target pressure value of the compressor after the current temperature-controlled shutdown according to the first pressure value and the preset pressure value; Controlling the compressor to operate according to the target pressure value after the current temperature control shutdown, and monitoring whether the outdoor unit does not receive the temperature control startup signal within a preset time; The operating state of the compressor is controlled according to the monitoring results, and the target pressure value of the compressor after the next temperature-controlled shutdown is adjusted, and the operation of the compressor is controlled according to the target pressure value of the compressor at the next temperature-controlled shutdown after the next temperature-controlled shutdown.

[0008] According to the air conditioner of the embodiment of the present invention, after the outdoor unit receives the temperature control shutdown signal, the target pressure of the compressor after this temperature control shutdown can be reasonably set according to the pressure corresponding to the compressor at the time of temperature control shutdown, and the operating state of the compressor can be controlled according to the monitoring result of the temperature control start-up signal within the preset time, and the target pressure after the next temperature control shutdown can be dynamically adjusted, so that after the next temperature control shutdown, the compressor operation can be controlled according to the target pressure value of the compressor at the next temperature control shutdown, so as to achieve the effect of step-by-step gradient operation of the compressor from high frequency to low frequency, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the energy consumption increase and equipment loss problems that may be caused by unstable compressor operation, and achieving the effect of energy saving and extending the service life of the compressor.

[0009] In some embodiments, the preset pressure value includes a first preset pressure value. In the heating operation mode, the difference between the first pressure value and the first preset pressure value is determined as the target pressure value of the compressor after the current temperature control shutdown.

[0010] The above technical solution has the following beneficial effects: by reasonably reducing the pressure value of the compressor after the temperature-controlled shutdown, the reasonable frequency reduction of the compressor can be achieved, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the increased energy consumption and equipment loss problems caused by unstable compressor operation, and extending the service life of the compressor.

[0011] In some embodiments, in the heating operation mode, if the temperature control start signal is not received within the preset time, the compressor is controlled to shut down directly, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the sum of the target pressure value of the compressor after the current temperature control shutdown and a second preset pressure value, wherein the target pressure value of the compressor after the next temperature control shutdown is less than the first pressure value.

[0012] The above technical solution has the following beneficial effects: controlling the operating status of the compressor according to the monitoring results can save energy and reduce unnecessary mechanical wear, thereby extending the service life of the compressor. At the same time, by adjusting the target pressure of the compressor after the next temperature control shutdown, the compressor can be reasonably reduced in frequency, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the increased energy consumption and equipment loss problems that may be caused by unstable compressor operation, and extending the service life of the compressor.

[0013] In some embodiments, in the heating operation mode, if the temperature control start signal is received within a preset time, the compressor is controlled to operate within a frequency range determined according to the actual heating demand, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the difference between the target pressure value of the compressor after the current temperature control shutdown and the third preset pressure value.

[0014] The above technical solution has the following beneficial effects: by controlling the operating status of the compressor according to the monitoring results, it can be ensured that the indoor temperature can quickly and smoothly reach the user's set value. At the same time, by adjusting the target pressure of the compressor after the next temperature control shutdown, the compressor can be reasonably reduced in frequency, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the increased energy consumption and equipment loss problems that may be caused by unstable compressor operation, and achieving the effect of energy saving and extending the service life of the compressor.

[0015] In some embodiments, the preset pressure value includes a fourth preset pressure value. In the cooling operation mode, the sum of the first pressure value and the fourth preset pressure value is determined as the target pressure value of the compressor after the current temperature control shutdown.

[0016] The above technical solution has the following beneficial effects: by reasonably increasing the pressure value of the compressor after temperature control shutdown, the reasonable frequency reduction of the compressor can be achieved, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the increased energy consumption and equipment loss problems caused by unstable compressor operation, and achieving the effect of energy saving and extending the service life of the compressor.

[0017] In some embodiments, in the refrigeration operation mode, if the temperature control start signal is not received within the preset time, the compressor is controlled to shut down directly, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the difference between the target pressure value of the compressor after this temperature control shutdown and the fifth preset pressure value, wherein the target pressure value of the compressor after the next temperature control shutdown is greater than the first pressure value.

[0018] The above technical solution has the following beneficial effects: by controlling the operating status of the compressor according to the monitoring results, energy can be saved and unnecessary mechanical wear can be reduced, thereby extending the service life of the compressor. At the same time, by adjusting the target pressure of the compressor after the next temperature control shutdown, the compressor can be reasonably reduced in frequency, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the increased energy consumption and equipment loss problems that may be caused by unstable compressor operation, and achieving the effect of energy saving and extending the service life of the compressor.

[0019] In some embodiments, in the refrigeration operation mode, if the temperature control start-up signal is received within a preset time, the compressor is controlled to operate within a frequency range determined according to the actual heating demand, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the sum of the target pressure value of the compressor after the current temperature control shutdown and the sixth preset pressure value.

[0020] The above technical solution has the following beneficial effects: by controlling the operating status of the compressor according to the monitoring results, it can be ensured that the indoor temperature can quickly and smoothly reach the user's set value. At the same time, by adjusting the target pressure of the compressor after the next temperature control shutdown, the compressor can be reasonably reduced in frequency, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the increased energy consumption and equipment loss problems that may be caused by unstable compressor operation, and achieving the effect of energy saving and extending the service life of the compressor.

[0021] In some embodiments, when recording the first pressure value corresponding to the compressor during this temperature-controlled shutdown, the controller is configured to: obtain the operating mode of the air conditioner; and record the first pressure value according to the operating mode of the air conditioner.

[0022] The above technical solution has the following beneficial effects: by recording different pressure values ​​in different modes, the calculated target pressure value can be made more accurate, so as to achieve precise control of the compressor, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the increased energy consumption and equipment loss problems caused by unstable compressor operation, and achieving the effect of energy saving and extending the service life of the compressor.

[0023] In some embodiments, when recording the first pressure value according to the operating mode of the air conditioner, the controller is configured to: when the operating mode of the air conditioner is a heating operating mode, record the exhaust pressure value of the compressor as the first pressure value; when the operating mode of the air conditioner is a cooling operating mode, record the suction pressure value of the compressor as the first pressure value.

[0024] The above technical solution has the following beneficial effects: by recording different pressure values ​​in the cooling operation mode and the heating operation mode, the target pressure values ​​in different modes can be calculated, so as to achieve precise control of the compressor in different modes, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the increased energy consumption and equipment loss problems caused by unstable compressor operation, and achieving the effect of energy saving and extending the service life of the compressor.

[0025] In some embodiments, after receiving the temperature-controlled shutdown signal, the controller is further configured to: when it is determined that the conditions for entering the temperature-controlled shutdown adjustment are met, record the first pressure value corresponding to the compressor during the current temperature-controlled shutdown; otherwise, do not record the first pressure value corresponding to the compressor during the current temperature-controlled shutdown, and directly control the compressor to stop, wherein the conditions for entering the temperature-controlled shutdown adjustment include: the temperature-controlled shutdown signal is a preset AC signal, and the number of times the temperature-controlled shutdown signal is received is greater than the preset number, and the compressor frequency before the last temperature-controlled shutdown in the preset number of times is greater than the preset frequency threshold.

[0026] The above technical solution has the following beneficial effects: by setting strict conditions for entering temperature-controlled shutdown adjustment, fine control of the compressor after temperature-controlled shutdown can be achieved, thereby further reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the increased energy consumption and equipment loss problems that may be caused by unstable compressor operation, and achieving the effect of energy saving and extending the service life of the compressor.

[0027] In order to achieve the above-mentioned purpose, an embodiment of the second aspect of the present invention proposes a control method for an air conditioner, which includes the following steps: when the temperature control shutdown signal is received, recording the first pressure value corresponding to the compressor at this temperature control shutdown; determining the target pressure value of the compressor after this temperature control shutdown based on the first pressure value and the preset pressure value; controlling the compressor to operate according to the target pressure value after this temperature control shutdown, and monitoring whether the compressor meets the requirement of not receiving the temperature control start-up signal within a preset time; controlling the operating state of the compressor and adjusting the target pressure value of the compressor after the next temperature control shutdown according to the monitoring results, and controlling the operation of the compressor according to the target pressure value of the compressor at the next temperature control shutdown after the next temperature control shutdown.

[0028] According to the control method of the air conditioner according to the embodiment of the present invention, after the outdoor unit receives the temperature control shutdown signal, the target pressure of the compressor after this temperature control shutdown can be reasonably set according to the pressure corresponding to the compressor at the time of temperature control shutdown, and the operating state of the compressor can be controlled according to the monitoring result of the temperature control start-up signal within a preset time, and the target pressure after the next temperature control shutdown can be dynamically adjusted, so that after the next temperature control shutdown, the compressor operation can be controlled according to the target pressure value of the compressor at the next temperature control shutdown, so as to achieve the effect of step-by-step gradient operation of the compressor from high frequency to low frequency, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the energy consumption increase and equipment loss problems that may be caused by unstable compressor operation, and achieving the effect of energy saving and extending the service life of the compressor.

[0029] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which: Figure 1 is a schematic diagram of a refrigeration cycle system of an air conditioner according to an embodiment of the present invention; Figure 2 is a structural diagram of an air conditioner according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a controller according to an embodiment of the present invention; Figure 4 is a structural diagram of an air conditioner according to another embodiment of the present invention; Figure 5 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention; Figure 6 is a flow chart of determining a target pressure value of the compressor after the current temperature-controlled shutdown according to a first pressure value and a preset pressure value according to one embodiment of the present invention; Figure 7 1 is a flow chart of controlling the operating state of a compressor and adjusting the target pressure value of the compressor after the next temperature-controlled shutdown according to monitoring results according to an embodiment of the present invention; Figure 8 is a flow chart of controlling the operating state of the compressor and adjusting the target pressure value of the compressor after the next temperature-controlled shutdown according to monitoring results according to another embodiment of the present invention; Figure 9 This is a flow chart of recording the first pressure value corresponding to the compressor during the current temperature-controlled shutdown according to one embodiment of the present invention; Figure 10 is a schematic diagram of a process for recording a first pressure value according to an operating mode of an air conditioner according to one embodiment of the present invention; Figure 11 FIG. 4 is a flow chart of a method for controlling an air conditioner according to another embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0033] 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 quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0035] like Figure 1 As shown, the air conditioner 1 of the present invention performs a refrigeration cycle of the air conditioner 1 by using a compressor, a condenser, an evaporator, a throttling device, and a four-way valve. The refrigeration cycle includes a series of processes involving compression, condensation, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0036] The compressor compresses the high-temperature, high-pressure refrigerant gas entering through the return pipe and discharges the compressed refrigerant through the exhaust pipe. The discharged refrigerant gas flows into the condenser through the condenser inlet pipe. The condenser condenses the compressed refrigerant into a liquid phase, releasing heat into the surrounding environment through the condensation process.

[0037] The evaporator evaporates the refrigerant, which has expanded in the throttling device, and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves a cooling effect by utilizing the latent heat of evaporation to exchange heat with the material being cooled. Throughout this cycle, the air conditioner 1 regulates the temperature of the indoor space.

[0038] Combine Figure 2 and Figure 4 As shown, the air conditioner 1 in the present application includes an indoor unit 13 and an outdoor unit 12. The indoor unit 13 and the outdoor unit 12 can be configured as split units. The indoor unit 13 can be configured as a wall-mounted type, a ceiling-mounted type, a duct-mounted type, etc., and the indoor unit 13 is installed at the top or top of the indoor room.

[0039] Taking an indoor wall mounted unit as an example, the indoor wall mounted unit is usually installed at a location such as an indoor wall. For another example, an indoor cabinet unit (not shown in the figure) is also a form of the indoor unit 13 .

[0040] Taking a split unit as an example, the air conditioner 1 includes an indoor unit 13 and an outdoor unit 12, wherein the outdoor unit 12 is usually set outdoors for heat exchange with the indoor environment.

[0041] In addition, the air conditioner 1 includes a controller 71 for controlling the operation of various components within the air conditioner 1, thereby enabling the various components of the air conditioner 1 to operate and realize various predetermined functions of the air conditioner 1. The air conditioner 1 also includes a control device 200. For example, the control device 200 is specifically configured as a remote control. The remote control has the function of communicating with the controller 71 using, for example, infrared or other communication methods. The remote control is used to allow the user to control the air conditioner 1 in various ways, thereby enabling interaction between the user and the air conditioner 1.

[0042] The indoor unit 13 of the air conditioner 1 in the embodiment of the present application is arranged at the top or upper part of the room. Generally speaking, the installation height of the indoor unit 13 is higher than the user activity area. The indoor unit 13 includes a return air inlet 17 and an air outlet 16 connected to the room. The indoor air passes through the return air inlet 17 and the indoor unit 13, and flows back to the room through the air outlet 16.

[0043] An air guide plate 2 is provided at the position of the air outlet 16 , and the air guide plate 2 adjusts the outflow direction of the air flowing through the air outlet 12 by changing the relative rotation angle between the air guide plate 2 and the air outlet 16 , thereby affecting the indoor air temperature stratification.

[0044] The embodiment of the present application also provides a hardware structure diagram of a controller 71, such as Figure 3 As shown, the controller 71 includes a processor 83 and, optionally, a memory 82 and a communication interface 84 connected to the processor 83. The processor 83, the memory 82 and the communication interface 84 are connected via a bus 81.

[0045] The processor 83 may be a central processing unit (CPU), a general-purpose processor (GP), a network processor (NP), a digital signal processor (DSP), a microprocessor (MCU), a microcontroller (MCU), a programmable logic device (PLD), or any combination thereof. The processor 83 may also be any other device having a processing function, such as a circuit, a device, or a software module. The processor 83 may also include multiple CPUs, and the processor 83 may be a single-CPU processor or a multi-CPU processor. The processor 83 herein may refer to one or more devices, circuits, or processing cores for processing data (e.g., computer program instructions).

[0046] The memory 82 can be a read-only memory 82 (ROM) or other types of static storage devices that can store static information and instructions, a random access memory 82 (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory 82 (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, and the present embodiment does not impose any restrictions on this. The memory 82 can exist independently or be integrated with the processor 83. Among them, the memory 82 can contain computer program code. The processor 83 is used to execute the computer program code stored in the memory 82, thereby realizing the control method of the air conditioner 1 provided in the embodiment of the present application.

[0047] The communication interface 84 can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area network (WLAN), etc.). The communication interface 84 can be a module, a circuit, a transceiver or any device that can achieve communication.

[0048] The bus 81 may be a peripheral component interconnect (PCI) bus 81 or an extended industry standard architecture (EISA) bus 81. The bus 81 may be divided into an address bus 81, a data bus 81, a control bus 81, and the like.

[0049] The following combination Figure 4-11 An air conditioner 1 and a control method thereof according to an embodiment of the present invention are described.

[0050] In some embodiments, as Figure 4 As shown, the air conditioner 1 includes: an indoor unit 13 and an outdoor unit 12. The indoor unit 13 and the outdoor unit 12 form a refrigerant circulation system through a connecting pipe, so that the refrigerant performs a refrigeration cycle in a loop consisting of a compressor, a four-way valve, a condenser, a throttling device, and an evaporator. One of the condenser and the evaporator is an outdoor heat exchanger, and the other is an indoor heat exchanger.

[0051] In some embodiments, as Figure 4 As shown, the air conditioner 1 may include: a wired controller 14 for sending a temperature-controlled power-on signal or a temperature-controlled power-off signal to the outdoor unit 12 .

[0052] In some embodiments, as Figure 4 As shown, the air conditioner 1 may include: a pressure sensor 15 for detecting a pressure value corresponding to the compressor.

[0053] In one embodiment, the pressure sensor 15 may include a pressure sensor, which can be set on the E pipe of the four-way valve of the air conditioner to detect the pressure value corresponding to the compressor, that is, the pressure value corresponding to the compressor is the E pipe pressure value of the four-way valve.

[0054] In another embodiment, the pressure sensor 15 may include two pressure sensors, which are respectively mounted on the C and D pipes of the four-way valve, serving as exhaust pressure sensors and intake pressure sensors, respectively. Thus, the pressure value detected by the compressor is the pressure of pipe C or pipe D, i.e., the exhaust pressure value or intake pressure value of the compressor.

[0055] In some embodiments, as Figure 4 As shown, the air conditioner 1 may include: a controller 71, the controller 71 being configured to: upon receiving a temperature control shutdown signal, record a first pressure value corresponding to the compressor during this temperature control shutdown; Determine the target pressure value of the compressor after the current temperature control shutdown according to the first pressure value and the preset pressure value; Control the compressor to operate according to the target pressure value after the current temperature control shutdown, and monitor whether the outdoor unit 12 does not receive the temperature control startup signal within a preset time; The operating state of the compressor is controlled according to the monitoring results, and the target pressure value of the compressor after the next temperature control shutdown is adjusted. After the next temperature control shutdown, the compressor operation is controlled according to the target pressure value of the compressor at the next temperature control shutdown.

[0056] Specifically, during the control process of the air conditioner 1, when the temperature control switch of the wired controller is triggered, a temperature-controlled shutdown signal can be sent to the controller 71 of the outdoor unit 12. At this time, the controller 71 of the outdoor unit 12 can trigger the pressure sensor 15 provided in the pipeline between the compressor and the four-way valve in the outdoor unit 12 to read the current pressure value of the compressor, i.e., the first pressure value. It will be understood that the first pressure value corresponding to the compressor during this temperature-controlled shutdown is the pressure value corresponding to the compressor after the outdoor unit 12 has been running for a preset time after receiving the temperature-controlled shutdown signal, rather than the pressure value corresponding to the compressor when the outdoor unit 12 receives the temperature-controlled shutdown signal.

[0057] Furthermore, a preset pressure value can be reasonably set according to actual conditions or experimental theory, and the target pressure value of the compressor after this temperature control shutdown is generated by calculating (adding or subtracting) the first pressure value and the preset pressure value.

[0058] Furthermore, after the controller 71 determines the target pressure value for the compressor after the current temperature-controlled shutdown based on the first pressure value and the preset pressure value, it can control the operation of the compressor so that the compressor operates according to the target pressure value after the current temperature-controlled shutdown, including but not limited to determining a target frequency range corresponding to the target pressure value after the current temperature-controlled shutdown based on the target pressure value after the current temperature-controlled shutdown, and then controlling the frequency of the compressor to operate within the target frequency range. Furthermore, while the compressor operates according to the target pressure value after the current temperature-controlled shutdown, the controller 71 can continuously monitor whether the outdoor unit 12 has not received a temperature-controlled startup signal within a preset time.

[0059] Furthermore, in the process of continuously monitoring whether the outdoor unit 12 has not received the temperature control start-up signal within the preset time, the operating status of the compressor can be controlled according to the monitoring results. At the same time, the target pressure value of the compressor after the next temperature control shutdown can be dynamically adjusted, and the compressor operation can be controlled according to the target pressure value of the compressor at the next temperature control shutdown after the next temperature control shutdown, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the increased energy consumption and equipment loss problems that may be caused by unstable compressor operation, and extending the service life of the compressor.

[0060] According to the air conditioner 1 of the embodiment of the present invention, after the outdoor unit 12 receives the temperature control shutdown signal, the target pressure of the compressor after this temperature control shutdown can be reasonably set according to the pressure corresponding to the compressor at the time of temperature control shutdown, and the operating state of the compressor can be controlled according to the monitoring result of the temperature control start-up signal within the preset time, and the target pressure after the next temperature control shutdown can be dynamically adjusted, so that after the next temperature control shutdown, the compressor operation can be controlled according to the target pressure value of the compressor at the next temperature control shutdown, so as to achieve the effect of step-by-step gradient operation of the compressor from high frequency to low frequency, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the energy consumption increase and equipment loss problems that may be caused by unstable compressor operation, and achieving the effect of energy saving and extending the service life of the compressor.

[0061] In one embodiment of the present invention, the preset pressure value includes a first preset pressure value. In the heating operation mode, the difference between the first pressure value and the first preset pressure value is determined as the target pressure value of the compressor after the current temperature control shutdown.

[0062] Specifically, when determining the target pressure value of the compressor after the current temperature-controlled shutdown based on the first pressure value and the preset pressure value, if the air conditioner 1 is in the heating mode, the difference between the first pressure value and the first preset pressure value can be calculated to determine the target pressure value of the compressor after the current temperature-controlled shutdown. For example, the first preset pressure value is a compressor pressure adjustment value pre-set based on experimental theory and actual conditions, used to dynamically adjust the compressor's target pressure value based on current operating conditions. For example, in the heating mode, if the first preset pressure value is a MPa, then the target pressure value of the compressor after the current temperature-controlled shutdown is (Pa) MPa, with the goal of keeping the target pressure lower than the first pressure value. It is understood that in the heating mode, the first pressure value can be the exhaust pressure value, i.e., the high-pressure pressure value. A lower target pressure value indicates a lower high-frequency operating requirement for the compressor, and thus a lower corresponding operating frequency for the compressor. In other words, by reasonably reducing the compressor pressure value after the temperature-controlled shutdown, a reasonable frequency reduction of the compressor can be achieved.

[0063] In one embodiment of the present invention, in the heating operation mode, if the temperature control start signal is not received within the preset time, the compressor is controlled to shut down directly, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the sum of the target pressure value of the compressor after this temperature control shutdown and the second preset pressure value, wherein the target pressure value of the compressor after the next temperature control shutdown is less than the first pressure value.

[0064] Specifically, when controlling the operating status of the compressor and adjusting the target pressure value of the compressor after the next temperature control shutdown based on the monitoring results, if the controller 71 of the outdoor unit 12 does not receive the temperature control start-up signal within the preset time in the heating operation mode, the compressor can be directly controlled to stop running to save energy and reduce unnecessary mechanical wear, thereby extending the service life of the compressor.

[0065] Furthermore, the target pressure value of the compressor after the next temperature-controlled shutdown can be adjusted to the sum of the target pressure value of the compressor after the current temperature-controlled shutdown and a second preset pressure value. The target pressure value of the compressor after the next temperature-controlled shutdown is less than the first pressure value. For example, the second preset pressure value is a pressure adjustment amount for the compressor, which is predetermined based on experimental theory and actual conditions, and is used to dynamically adjust the target pressure value of the compressor according to current operating conditions. For example, in the heating operation mode, if the second preset pressure value is b MPa, the target pressure value of the compressor after the next temperature-controlled shutdown is (Pa + b) MPa. It can be understood that by adjusting the target pressure value of the compressor after the next temperature-controlled shutdown to the sum of the target pressure value of the compressor after the current temperature-controlled shutdown and the second preset pressure value, the difference between the target pressure value after the next temperature-controlled shutdown and the first pressure value can be kept within a small range, thereby avoiding unstable compressor operation caused by large pressure fluctuations. Furthermore, controlling the target pressure value of the compressor after the next temperature-controlled shutdown to be less than the first pressure value can ensure that the high-frequency operation demand of the compressor remains low, that is, the corresponding operating frequency of the compressor continues to decrease, and reasonable frequency reduction of the compressor can still be achieved.

[0066] In one embodiment of the present invention, in the heating operation mode, if a temperature control start signal is received within a preset time, the compressor is controlled to operate within a frequency range determined according to the actual heating demand, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the difference between the target pressure value of the compressor after this temperature control shutdown and the third preset pressure value.

[0067] Specifically, when controlling the operating status of the compressor according to the monitoring results and adjusting the target pressure value of the compressor after the next temperature control shutdown, if the controller 71 of the outdoor unit 12 receives the temperature control start-up signal again within the preset time in the heating operation mode, the compressor can be controlled to operate within the frequency range determined according to the actual heating demand, ensuring that the indoor temperature can quickly and smoothly reach the user's set value.

[0068] Furthermore, the target pressure value of the compressor after the next temperature-controlled shutdown can be adjusted to the difference between the target pressure value of the compressor after the current temperature-controlled shutdown and a third preset pressure value. For example, the third preset pressure value is a pressure adjustment amount for the compressor pre-set based on experimental theory and actual conditions, and is used to dynamically adjust the target pressure value of the compressor according to the current operating conditions. For example, in the heating operation mode, the third preset pressure value is cMPa, and the target pressure value of the compressor after the next temperature-controlled shutdown is (Pa -c)MPa. The purpose is to make the target pressure value of the compressor after the next temperature-controlled shutdown lower than the target pressure value of the compressor after the current temperature-controlled shutdown. It can be understood that the smaller the target pressure value, the lower the high-frequency operation demand of the compressor, and the corresponding lower the operating frequency of the compressor. That is, by reasonably reducing the pressure value of the compressor after the temperature-controlled shutdown, a reasonable frequency reduction of the compressor can be achieved.

[0069] In one embodiment of the present invention, the preset pressure value includes a fourth preset pressure value. In the cooling operation mode, the sum of the first pressure value and the fourth preset pressure value is determined as the target pressure value of the compressor after the current temperature control shutdown.

[0070] Specifically, when determining the target pressure value of the compressor after the current temperature-controlled shutdown based on the first pressure value and the preset pressure value, if the air conditioner 1 is in cooling mode, the sum of the first pressure value and the fourth preset pressure value can be calculated to determine the target pressure value of the compressor after the current temperature-controlled shutdown. For example, the fourth preset pressure value is a compressor pressure adjustment value pre-set based on experimental theory and actual conditions, and is used to dynamically adjust the compressor's target pressure value based on current operating conditions. For example, in cooling mode, if the fourth preset pressure value is d MPa, the target pressure value of the compressor after the current temperature-controlled shutdown is (P + d) MPa, with the goal of ensuring that the target pressure is higher than the first pressure value. It is understood that in cooling mode, the first pressure value can be the suction pressure value, i.e., the low pressure value. A higher target pressure value indicates a lower high-frequency operating requirement for the compressor, and a corresponding lower operating frequency for the compressor. In other words, by reasonably increasing the pressure value of the compressor after the temperature-controlled shutdown, a reasonable frequency reduction of the compressor can be achieved.

[0071] In one embodiment of the present invention, in the refrigeration operation mode, if the temperature control start signal is not received within the preset time, the compressor is controlled to shut down directly, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the difference between the target pressure value of the compressor after this temperature control shutdown and the fifth preset pressure value, wherein the target pressure value of the compressor after the next temperature control shutdown is greater than the first pressure value.

[0072] Specifically, when controlling the operating status of the compressor and adjusting the target pressure value of the compressor after the next temperature control shutdown based on the monitoring results, if the controller 71 of the outdoor unit 12 does not receive the temperature control start-up signal within the preset time in the cooling operation mode, the compressor can be directly controlled to stop running to save energy and reduce unnecessary mechanical wear, thereby extending the service life of the compressor.

[0073] Furthermore, the target pressure value of the compressor after the next temperature-controlled shutdown can be adjusted to the difference between the target pressure value of the compressor after the current temperature-controlled shutdown and a fifth preset pressure value, wherein the target pressure value of the compressor after the next temperature-controlled shutdown is greater than the first pressure value. For example, the fifth preset pressure value is a pressure adjustment amount for the compressor pre-set based on experimental theory and actual conditions, and is used to dynamically adjust the target pressure value of the compressor according to the current operating conditions. For example, in the heating operation mode, if the fifth preset pressure value is eMPa, the target pressure value of the compressor after the next temperature-controlled shutdown is (P+de)MPa. It can be understood that by adjusting the target pressure value of the compressor after the next temperature-controlled shutdown to the difference between the target pressure value of the compressor after the current temperature-controlled shutdown and the fifth preset pressure value, the difference between the target pressure value after the next temperature-controlled shutdown and the first pressure value can be kept within a small range, thereby avoiding unstable compressor operation caused by large pressure fluctuations. At the same time, controlling the target pressure value of the compressor after the next temperature-controlled shutdown to be higher than the first pressure value can ensure that the high-frequency operation demand of the compressor remains low, that is, the corresponding operating frequency of the compressor continues to decrease, and reasonable frequency reduction of the compressor can still be achieved.

[0074] In one embodiment of the present invention, in the cooling operation mode, if a temperature control start signal is received within a preset time, the compressor is controlled to operate within a frequency range determined according to the actual heating demand, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the sum of the target pressure value of the compressor after this temperature control shutdown and the sixth preset pressure value.

[0075] Specifically, when controlling the operating status of the compressor according to the monitoring results and adjusting the target pressure value of the compressor after the next temperature control shutdown, if the controller 71 of the outdoor unit 12 receives the temperature control start-up signal again within the preset time in the cooling operation mode, the compressor can be controlled to operate within the frequency range determined according to the actual heating demand, ensuring that the indoor temperature can quickly and smoothly reach the user's set value.

[0076] Furthermore, the target pressure value of the compressor after the next temperature-controlled shutdown can be adjusted to the sum of the target pressure value of the compressor after the current temperature-controlled shutdown and a sixth preset pressure value. For example, the sixth preset pressure value is a pressure adjustment amount for the compressor pre-set based on experimental theory and actual conditions, and is used to dynamically adjust the target pressure value of the compressor according to the current operating conditions. For example, in the cooling operation mode, if the sixth preset pressure value is fMPa, the target pressure value of the compressor after the next temperature-controlled shutdown is (P+d+f)MPa. The purpose is to make the target pressure value of the compressor after the next temperature-controlled shutdown higher than the target pressure value of the compressor after the current temperature-controlled shutdown. It is understood that in the cooling operation mode, the first pressure value can be the suction pressure value, i.e., the low pressure value. When the target pressure value is larger, the high-frequency operation requirement of the compressor is lower, and the corresponding operating frequency of the compressor is lower. In other words, by reasonably increasing the pressure value of the compressor after the temperature-controlled shutdown, the compressor frequency can be reasonably reduced.

[0077] In one embodiment of the present invention, when recording the first pressure value corresponding to the compressor during this temperature-controlled shutdown, the controller 71 is configured to: obtain the operating mode of the air conditioner 1; and record the first pressure value according to the operating mode of the air conditioner 1.

[0078] Specifically, during the operation of the air conditioner 1, the working state of the compressor and the circulation direction of the refrigerant are different in different operating modes, which will cause the pressure change pattern of the compressor to be different. Therefore, when recording the first pressure value corresponding to the compressor during this temperature control shutdown, the operating mode of the air conditioner 1 (for example, heating operating mode or cooling operating mode) can be obtained, and the first pressure value can be recorded according to the operating mode of the air conditioner 1.

[0079] In one embodiment of the present invention, when recording the first pressure value according to the operating mode of the air conditioner 1, the controller 71 is configured as follows: when the operating mode of the air conditioner 1 is the heating operating mode, the exhaust pressure value of the compressor is recorded as the first pressure value; when the operating mode of the air conditioner 1 is the cooling operating mode, the suction pressure value of the compressor is recorded as the first pressure value.

[0080] Specifically, during the operation of the air conditioner 1, when the operation mode of the air conditioner 1 is the heating operation mode, the compressor sucks in the low-temperature, low-pressure refrigerant gas and compresses it into a high-temperature, high-pressure gas, and then discharges the high-temperature, high-pressure gas to release heat to the indoor heat exchanger (condenser). At this time, the exhaust pressure value of the compressor directly reflects the heating capacity of the air conditioner 1 and the indoor heat load. Therefore, the exhaust pressure value of the compressor can be recorded as the first pressure value.

[0081] Furthermore, when the operating mode of the air conditioner 1 is the cooling operating mode, since the refrigerant enters the indoor evaporator to absorb heat after being reduced in pressure by the throttling device, the low-pressure gaseous refrigerant returns to the compressor. At this time, the suction pressure value of the compressor directly reflects the heat absorption efficiency and cooling demand of the evaporator. Therefore, the suction pressure value of the compressor can be recorded as the first pressure value.

[0082] In one embodiment of the present invention, after receiving the temperature control shutdown signal, the controller 71 is further configured to: when it is determined that the conditions for entering the temperature control shutdown adjustment are met, record the first pressure value corresponding to the compressor at this temperature control shutdown; otherwise, do not record the first pressure value corresponding to the compressor at this temperature control shutdown, and directly control the compressor to shut down, wherein the conditions for entering the temperature control shutdown adjustment include: the temperature control shutdown signal is a preset AC signal, and the number of times the temperature control shutdown signal is received is greater than the preset number, and the compressor frequency before the last temperature control shutdown in the preset number of times is greater than the preset frequency threshold.

[0083] Specifically, after receiving the temperature-controlled shutdown signal, the controller 71 can not only respond to the temperature-controlled shutdown signal, but also determine whether the conditions for entering the temperature-controlled shutdown adjustment mode are met, and perform subsequent operations based on the determination result. For example, when it is determined that the conditions for entering the temperature-controlled shutdown adjustment mode are met, the first pressure value of the compressor corresponding to the current temperature-controlled shutdown can be recorded. Otherwise, the first pressure value of the compressor corresponding to the current temperature-controlled shutdown is not recorded, and the compressor is directly controlled to shut down. The conditions for entering the temperature-controlled shutdown adjustment mode include: the temperature-controlled shutdown signal is a preset AC signal (e.g., a 24V AC signal), the number of times the temperature-controlled shutdown signal has been received exceeds the preset number (i.e., the temperature-controlled shutdown signal is a valid signal at this time), and the compressor frequency before the last temperature-controlled shutdown during the preset number of times is greater than a preset frequency threshold (i.e., ensuring that the temperature-controlled shutdown signal is received during high-frequency operation to avoid invalid operation during low-frequency operation).

[0084] According to the air conditioner 1 of the embodiment of the present invention, after the outdoor unit 12 receives the temperature control shutdown signal, the target pressure of the compressor after this temperature control shutdown can be reasonably set according to the pressure corresponding to the compressor at the time of temperature control shutdown, and the operating state of the compressor can be controlled according to the monitoring result of the temperature control start-up signal within the preset time, and the target pressure after the next temperature control shutdown can be dynamically adjusted, so that after the next temperature control shutdown, the compressor operation can be controlled according to the target pressure value of the compressor at the next temperature control shutdown, so as to achieve the effect of step-by-step gradient operation of the compressor from high frequency to low frequency, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the energy consumption increase and equipment loss problems that may be caused by unstable compressor operation, and achieving the effect of energy saving and extending the service life of the compressor.

[0085] like Figure 5 As shown, the air conditioner control method according to the embodiment of the present invention at least includes steps S1 to S4.

[0086] Step S1: When a temperature control shutdown signal is received, a first pressure value corresponding to the compressor during the temperature control shutdown is recorded.

[0087] Step S2: determining a target pressure value of the compressor after the current temperature-controlled shutdown according to the first pressure value and the preset pressure value.

[0088] Step S3: Control the compressor to operate according to the target pressure value after the current temperature control shutdown, and monitor whether the outdoor unit does not receive the temperature control startup signal within a preset time.

[0089] Step S4, controlling the operating state of the compressor and adjusting the target pressure value of the compressor after the next temperature-controlled shutdown according to the monitoring results, and controlling the operation of the compressor according to the target pressure value of the compressor after the next temperature-controlled shutdown.

[0090] In some embodiments, combined Figure 6 As shown, the preset pressure value includes a first preset pressure value. In the heating operation mode, the difference between the first pressure value and the first preset pressure value is determined as the target pressure value of the compressor after the current temperature control shutdown.

[0091] In some embodiments, combined Figure 7 As shown, in the heating operation mode, if the temperature control start signal is not received within the preset time, the compressor is controlled to shut down directly, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the sum of the target pressure value of the compressor after this temperature control shutdown and the second preset pressure value, wherein the target pressure value of the compressor after the next temperature control shutdown is less than the first pressure value.

[0092] In some embodiments, combined Figure 7As shown, in the heating operation mode, if the temperature control start signal is received within the preset time, the compressor is controlled to operate within the frequency range determined according to the actual heating demand, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the difference between the target pressure value of the compressor after this temperature control shutdown and the third preset pressure value.

[0093] In some embodiments, combined Figure 6 As shown, the preset pressure value includes a fourth preset pressure value. In the cooling operation mode, the sum of the first pressure value and the fourth preset pressure value is determined to be the target pressure value of the compressor after the current temperature control shutdown.

[0094] In some embodiments, combined Figure 8 As shown, in the refrigeration operation mode, if the temperature control start signal is not received within the preset time, the compressor is controlled to shut down directly, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the difference between the target pressure value of the compressor after this temperature control shutdown and the fifth preset pressure value, wherein the target pressure value of the compressor after the next temperature control shutdown is less than the first pressure value.

[0095] In some embodiments, combined Figure 8 As shown, in the cooling operation mode, if the temperature control start signal is received within the preset time, the compressor is controlled to operate within the frequency range determined according to the actual heating demand, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the sum of the target pressure value of the compressor after this temperature control shutdown and the sixth preset pressure value.

[0096] In some embodiments, combined Figure 9 As shown, recording the first pressure value corresponding to the compressor during this temperature control shutdown specifically includes: obtaining the operating mode of the air conditioner; and recording the first pressure value according to the operating mode of the air conditioner.

[0097] In some embodiments, combined Figure 10 As shown, the first pressure value is recorded according to the operating mode of the air conditioner, specifically including: when the operating mode of the air conditioner is the heating operating mode, the exhaust pressure value of the compressor is recorded as the first pressure value; when the operating mode of the air conditioner is the cooling operating mode, the suction pressure value of the compressor is recorded as the first pressure value.

[0098] In some embodiments, combined Figure 11As shown, after receiving the temperature control shutdown signal, it also includes: when it is determined that the conditions for entering the temperature control shutdown adjustment are met, the first pressure value corresponding to the compressor at the time of this temperature control shutdown is recorded; otherwise, the first pressure value corresponding to the compressor at the time of this temperature control shutdown is not recorded, and the compressor is directly controlled to stop, wherein the conditions for entering the temperature control shutdown adjustment include: the temperature control shutdown signal is a preset AC signal, and the number of times the temperature control shutdown signal is received is greater than the preset number, and the compressor frequency before the last temperature control shutdown in the preset number of times is greater than the preset frequency threshold.

[0099] It should be noted that when controlling the air conditioner, its specific implementation method is similar to the specific implementation method of the air conditioner in any of the above-mentioned embodiments of the present invention. Therefore, for a detailed exemplary description of the control process of the air conditioner, please refer to the aforementioned relevant description part about the air conditioner. In order to reduce redundancy, it will not be repeated here.

[0100] According to the control method of the air conditioner according to the embodiment of the present invention, after the outdoor unit receives the temperature control shutdown signal, the target pressure of the compressor after this temperature control shutdown can be reasonably set according to the pressure corresponding to the compressor at the time of temperature control shutdown, and the operating state of the compressor can be controlled according to the monitoring result of the temperature control start-up signal within a preset time, and the target pressure after the next temperature control shutdown can be dynamically adjusted, so that after the next temperature control shutdown, the compressor operation can be controlled according to the target pressure value of the compressor at the next temperature control shutdown, so as to achieve the effect of step-by-step gradient operation of the compressor from high frequency to low frequency, thereby reducing the start and stop frequency of the compressor, making the compressor run more smoothly, reducing the energy consumption increase and equipment loss problems that may be caused by unstable compressor operation, and achieving the effect of energy saving and extending the service life of the compressor.

[0101] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0102] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that: include: An indoor unit and an outdoor unit, wherein the indoor unit and the outdoor unit form a refrigerant circulation system through a connecting pipe, so that the refrigerant performs a refrigeration cycle in a loop consisting of a compressor, a four-way valve, a condenser, a throttling device, and an evaporator, wherein one of the condenser and the evaporator is an outdoor heat exchanger and the other is an indoor heat exchanger; A wired controller, used for sending a temperature-controlled power-on signal or a temperature-controlled power-off signal to the outdoor unit; A pressure sensor, used to detect the pressure value corresponding to the compressor; A controller configured to: When the temperature control shutdown signal is received, the first pressure value of the compressor corresponding to the temperature control shutdown is recorded; Determining a target pressure value of the compressor after the current temperature-controlled shutdown according to the first pressure value and the preset pressure value; Controlling the compressor to operate according to the target pressure value after the current temperature control shutdown, and monitoring whether the outdoor unit does not receive the temperature control startup signal within a preset time; The operating state of the compressor is controlled according to the monitoring results, and the target pressure value of the compressor after the next temperature-controlled shutdown is adjusted, and the operation of the compressor is controlled according to the target pressure value of the compressor at the next temperature-controlled shutdown after the next temperature-controlled shutdown.

2. The air conditioner according to claim 1, characterized in that The preset pressure value includes a first preset pressure value. In the heating operation mode, the difference between the first pressure value and the first preset pressure value is determined as the target pressure value of the compressor after the current temperature control shutdown.

3. The air conditioner according to claim 2, characterized in that In the heating operation mode, if the temperature control start signal is not received within the preset time, the compressor is controlled to shut down directly, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the sum of the target pressure value of the compressor after the current temperature control shutdown and a second preset pressure value, wherein the target pressure value of the compressor after the next temperature control shutdown is less than the first pressure value.

4. The air conditioner according to claim 2, characterized in that In the heating operation mode, if the temperature control start signal is received within the preset time, the compressor is controlled to operate within the frequency range determined according to the actual heating demand, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the difference between the target pressure value of the compressor after the current temperature control shutdown and the third preset pressure value.

5. The air conditioner according to claim 1, wherein: The preset pressure value includes a fourth preset pressure value. In the cooling operation mode, the sum of the first pressure value and the fourth preset pressure value is determined as the target pressure value of the compressor after the current temperature control shutdown.

6. The air conditioner according to claim 5, characterized in that In the refrigeration operation mode, if the temperature control start-up signal is not received within the preset time, the compressor is controlled to shut down directly, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the difference between the target pressure value of the compressor after this temperature control shutdown and the fifth preset pressure value, wherein the target pressure value of the compressor after the next temperature control shutdown is greater than the first pressure value.

7. The air conditioner according to claim 5, characterized in that In the refrigeration operation mode, if the temperature control start-up signal is received within the preset time, the compressor is controlled to operate within the frequency range determined according to the actual heating demand, and the target pressure value of the compressor after the next temperature control shutdown is adjusted to the sum of the target pressure value of the compressor after the current temperature control shutdown and the sixth preset pressure value.

8. The air conditioner according to claim 1, wherein: When recording the first pressure value corresponding to the compressor during the current temperature-controlled shutdown, the controller is configured to: Obtaining an operating mode of the air conditioner; The first pressure value is recorded according to an operating mode of the air conditioner.

9. The air conditioner according to claim 8, characterized in that When recording the first pressure value according to the operating mode of the air conditioner, the controller is configured to: When the operation mode of the air conditioner is a heating operation mode, recording the exhaust pressure value of the compressor as the first pressure value; When the operation mode of the air conditioner is the cooling operation mode, the suction pressure value of the compressor is recorded as the first pressure value.

10. The air conditioner according to claim 1, wherein After receiving the temperature-controlled shutdown signal, the controller is further configured to: When it is determined that the conditions for entering the temperature control shutdown adjustment are met, the first pressure value corresponding to the compressor during the current temperature control shutdown is recorded; otherwise, the first pressure value corresponding to the compressor during the current temperature control shutdown is not recorded, and the compressor is directly controlled to stop, wherein the conditions for entering the temperature control shutdown adjustment include: the temperature control shutdown signal is a preset AC signal, and the number of times the temperature control shutdown signal is received is greater than the preset number, and the compressor frequency before the last temperature control shutdown among the preset number of times is greater than the preset frequency threshold.

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