Air conditioner control method, air conditioner, storage medium and device

Abstract

The application relates to the technical field of air conditioners, and discloses an air conditioner control method, an air conditioner, a storage medium and an apparatus, wherein the air conditioner comprises an indoor unit and an outdoor unit; a throttling component and an electromagnetic valve are arranged in parallel on a passage connected between the indoor unit and the outdoor unit; the air conditioner is connected with a generator power supply circuit and a storage battery power supply circuit; when it is detected that the air conditioner meets a shutdown protection condition, the electromagnetic valve is controlled to be opened, so that refrigerant stops flowing into the throttling component, the generator power supply circuit is disconnected, and the storage battery power supply circuit is connected, so that the air conditioner is powered by the storage battery; and after switching is completed, the air conditioner is controlled to be started; in the application, the current of the air conditioner is reduced by opening the electromagnetic valve, and the storage battery is switched to supply power when the air conditioner is restarted, so that the generator is prevented from being shut down due to frequent start and stop of the air conditioner, and the normal start of the air conditioner is ensured.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and in particular to an air conditioner control method, an air conditioner, a storage medium, and a device. Background Technology

[0002] Currently, in areas with unstable power supply, users often use generators to power air conditioners. However, since generators are typically used to power the entire house, the voltage supplied by the generator to the air conditioner is often too low. This can easily cause the air conditioner's current to exceed the generator's maximum allowable current, leading to overload protection shutdown of the generator and preventing the air conditioner from starting normally.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this invention is to provide an air conditioner control method, an air conditioner, a storage medium, and an apparatus, aiming to solve the technical problem in the prior art where, when powering an air conditioner through a generator, the current of the air conditioner is very likely to exceed the maximum allowable current of the generator, causing the generator to overload and shut down, and the air conditioner to fail to start normally. This is because generators are usually used for whole-house power supply.

[0005] To achieve the above objectives, the present invention provides an air conditioner control method, which is applied to an air conditioner. The air conditioner includes an indoor unit and an outdoor unit. A throttling component and a solenoid valve are connected in parallel on the connection path between the indoor unit and the outdoor unit. The air conditioner is connected to a generator power supply circuit and a battery power supply circuit, respectively.

[0006] The air conditioner control method includes the following steps:

[0007] When the air conditioner is detected to meet the shutdown protection conditions, the solenoid valve is controlled to open so that the refrigerant stops flowing into the throttling component;

[0008] Disconnect the generator power supply circuit and connect the battery power supply circuit to switch the battery to power the air conditioner; and

[0009] After the switching is completed, control the air conditioner to start.

[0010] Optionally, before controlling the solenoid valve to open to stop the refrigerant from flowing into the throttling component when the air conditioner is detected to meet the shutdown protection conditions, the method further includes:

[0011] When the air conditioner is in a preset operating mode, the current indoor temperature is obtained; and

[0012] Based on the current indoor temperature and the set temperature of the air conditioner, it is detected whether the air conditioner meets the shutdown protection conditions.

[0013] Optionally, disconnecting the generator power supply circuit and connecting the battery power supply circuit to switch the battery to power the air conditioner includes:

[0014] Determine whether the current indoor temperature is equal to the set temperature; and

[0015] If so, disconnect the generator power supply circuit and connect the battery power supply circuit to switch the battery to power the air conditioner.

[0016] Optionally, before controlling the solenoid valve to open to stop the refrigerant from flowing into the throttling component when the air conditioner is detected to meet the shutdown protection conditions, the method further includes:

[0017] When the air conditioner is in a preset operating mode, the evaporator coil temperature of the air conditioner is obtained; and

[0018] The air conditioner is checked to determine whether it meets the shutdown protection conditions based on the evaporator coil temperature.

[0019] Optionally, after the switching is completed and the air conditioner is started, the method further includes:

[0020] After the air conditioner has been running for a preset time, the solenoid valve is controlled to close to restore the power of the air conditioner; and

[0021] When the air conditioner is detected to be in a stable state, the generator power supply circuit is connected and the battery power supply circuit is disconnected to switch the generator to power the air conditioner.

[0022] Optionally, before controlling the solenoid valve to open to stop the refrigerant from flowing into the throttling component when the air conditioner is detected to meet the shutdown protection conditions, the method further includes:

[0023] When the air conditioner is in a preset operating mode, the total current of the air conditioner is obtained; and

[0024] The system detects whether the air conditioner meets the shutdown protection conditions based on the total current and generator current thresholds.

[0025] Optionally, after the switching is completed and the air conditioner is started, the method further includes:

[0026] After the air conditioner has been running for a preset time, the solenoid valve is controlled to close, and the current overall current of the air conditioner is acquired; and

[0027] Adjust the fan speed of the indoor unit and the power supply mode of the air conditioner according to the current overall current and the generator current threshold.

[0028] Furthermore, to achieve the above objectives, the present invention also proposes an air conditioner control device, the air conditioner comprising: an indoor unit and an outdoor unit, wherein a throttling component and a solenoid valve are connected in parallel on the connection path between the indoor unit and the outdoor unit, and the air conditioner is respectively connected to a generator power supply circuit and a battery power supply circuit; the air conditioner further comprises a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor, the air conditioner control program being configured to implement the air conditioner control method described above.

[0029] In addition, to achieve the above objectives, the present invention also proposes a storage medium storing an air conditioner control program, which, when executed by a processor, implements the air conditioner control method as described above.

[0030] Furthermore, to achieve the above objectives, the present invention also proposes an air conditioner control device, the air conditioner control device comprising:

[0031] The solenoid valve control module is used to control the solenoid valve to open when the air conditioner meets the shutdown protection conditions, so as to stop the refrigerant from flowing into the throttling component;

[0032] A power supply switching module is used to disconnect the generator power supply circuit and connect the battery power supply circuit to switch the battery to power the air conditioner.

[0033] An air conditioning start-up module is used to control the air conditioner to start after the switching is completed.

[0034] This invention discloses an air conditioner comprising an indoor unit and an outdoor unit. A throttling device and a solenoid valve are connected in parallel on the connection path between the indoor and outdoor units. The air conditioner is connected to a generator power supply circuit and a battery power supply circuit. When the air conditioner is detected to meet the shutdown protection conditions, the solenoid valve is opened to stop the refrigerant from flowing into the throttling device, disconnecting the generator power supply circuit and connecting the battery power supply circuit to switch the battery to power the air conditioner. After the switch is completed, the air conditioner is started. Because this invention reduces the current of the air conditioner by opening the solenoid valve and switches to battery power when the air conditioner restarts, it avoids frequent start-stop cycles that could cause the generator to stop, thus ensuring the normal start-up of the air conditioner. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of an air conditioner in the hardware operating environment involved in the embodiments of the present invention;

[0036] Figure 2This is a flowchart illustrating the first embodiment of the air conditioner control method of the present invention;

[0037] Figure 3 This is a schematic diagram of an air conditioner system according to an embodiment of the air conditioner control method of the present invention;

[0038] Figure 4 This is a diagram showing the refrigerant flow direction when the solenoid valve is open in the cooling mode, according to an embodiment of the air conditioner control method of the present invention.

[0039] Figure 5 This is a flowchart illustrating the second embodiment of the air conditioner control method of the present invention;

[0040] Figure 6 This is a diagram showing the refrigerant flow direction when the solenoid valve is closed in cooling mode, according to an embodiment of the air conditioner control method of the present invention.

[0041] Figure 7 This is a flowchart illustrating the third embodiment of the air conditioner control method of the present invention;

[0042] Figure 8 This is a flowchart illustrating the fourth embodiment of the air conditioner control method of the present invention;

[0043] Figure 9 This is a structural block diagram of the first embodiment of the air conditioner control device of the present invention.

[0044] Explanation of icon numbers:

[0045] label name label name 1 compressor 5 Solenoid valve 2 Four-way valve 6 Outdoor unit 3 Indoor unit 7 Generator power supply circuit 4 Throttling components 8 Battery power supply circuit

[0046] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0048] Reference Figure 1 , Figure 1 This is a schematic diagram of the air conditioner structure in the hardware operating environment involved in the embodiments of the present invention.

[0049] like Figure 1As shown, the air conditioner may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen, and optionally, it may also include a standard wired interface or a wireless interface. In this invention, the wired interface of the user interface 1003 may be a USB interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (RAM) or a non-volatile memory (NVM), such as a disk storage device. The memory 1005 may also optionally be a storage device independent of the aforementioned processor 1001.

[0050] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on the air conditioner and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0051] like Figure 1 As shown, the memory 1005, which is identified as a computer storage medium, may include an operating system, a network communication module, a user interface module, and an air conditioner control program.

[0052] exist Figure 1 In the air conditioner shown, the network interface 1004 is mainly used to connect to the backend server and communicate data with the backend server; the user interface 1003 is mainly used to connect to the user equipment; the air conditioner calls the air conditioner control program stored in the memory 1005 through the processor 1001 and executes the air conditioner control method provided in the embodiment of the present invention.

[0053] Based on the above hardware structure, an embodiment of the air conditioner control method of the present invention is proposed.

[0054] Reference Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of the air conditioner control method of the present invention, which presents the first embodiment of the air conditioner control method of the present invention.

[0055] In the first embodiment, for ease of understanding, refer to Figure 3 This explanation does not limit the scope of this solution. Figure 3This is a schematic diagram of an air conditioning system. The dotted area in the diagram represents the air conditioner, which consists of a compressor, a four-way valve, an indoor unit, a throttling device, a solenoid valve, and an outdoor unit. The air conditioner is connected to an external air conditioning control system, which is connected to the generator via a generator power supply circuit and to the battery via a battery power supply circuit.

[0056] Step S10: When the air conditioner is detected to meet the shutdown protection conditions, the solenoid valve is controlled to open so that the refrigerant stops flowing into the throttling component.

[0057] It should be understood that the executing entity in this embodiment is the air conditioner, wherein the air conditioner may be a fixed-frequency air conditioner.

[0058] It is understandable that the instantaneous starting current of a fixed-frequency air conditioner is 6 to 8 times its rated current. Therefore, fixed-frequency air conditioners are more prone to causing the generator to shut down due to overload protection caused by frequent start-stop cycles.

[0059] It should be noted that the shutdown protection conditions can be the cooling temperature reaching shutdown protection condition, the cooling freezing or low-temperature shutdown protection condition, and the cooling high temperature shutdown protection condition.

[0060] For ease of understanding, please refer to Figure 4 This explanation does not limit the scope of this solution. Figure 4 This diagram shows the refrigerant flow direction when the solenoid valve is open in cooling mode. In the diagram, when the air conditioner is cooling, the refrigerant discharged by the compressor is diverted to the indoor unit through the four-way valve. After heat exchange in the indoor unit, due to the large flow resistance at the throttling component, the refrigerant flows directly into the outdoor unit through the solenoid valve. After heat exchange in the outdoor unit, it returns to the compressor through the four-way valve for compression again, and the cycle repeats.

[0061] according to Figure 4 It can be seen that because the refrigerant does not pass through the component where the throttling component is located when it flows, the power at the throttling component is saved, thereby reducing the power of the air conditioner.

[0062] It should be understood that, in this embodiment, while opening the solenoid valve, the indoor unit can also be controlled to operate at the lowest fan speed to further reduce the power consumption of the air conditioner.

[0063] Step S20: Disconnect the generator power supply circuit and connect the battery power supply circuit to switch the battery to power the air conditioner.

[0064] It should be understood that, in order to avoid the current from the air conditioner restarting exceeding the generator's maximum allowable current, causing the generator to shut down due to overload protection and preventing the air conditioner from starting normally, this embodiment switches the air conditioner's power supply circuit before starting the air conditioner, so that the air conditioner is powered by the battery.

[0065] Understandably, it's also possible that when the generator's output voltage is lower than a set threshold (set to be no less than 15% of the rated voltage), the system switches to battery power to ensure the air conditioner operates normally.

[0066] Step S30: After the switching is completed, control the air conditioner to start.

[0067] It is understandable that the switching can be completed after the generator power supply circuit has switched to the battery power supply circuit.

[0068] In this embodiment, the current of the air conditioner is reduced by opening the solenoid valve, and the power supply is switched to the battery when the air conditioner restarts, thereby avoiding the generator shutdown caused by frequent start-stop of the air conditioner and ensuring the normal start-up of the air conditioner.

[0069] Reference Figure 5 , Figure 5 This is a flowchart illustrating the second embodiment of the air conditioner control method of the present invention, based on the above. Figure 2 The first embodiment shown presents a second embodiment of the air conditioner control method of the present invention.

[0070] In the second embodiment, before step S10, the method further includes:

[0071] Step S01: When the air conditioner is in a preset operating mode, obtain the current indoor temperature.

[0072] It should be understood that when the indoor temperature equals the set temperature, the air conditioner will enter a temperature-reaching shutdown protection state. For inverter air conditioners, this state means that when the indoor temperature equals the set temperature, the compressor will operate at a reduced frequency, running continuously at low power and low energy consumption to maintain the room temperature at the set temperature. For fixed-frequency air conditioners, this state means that when the indoor temperature equals the set temperature, the air conditioner will shut down until the difference between the indoor temperature and the set temperature becomes significant, at which point the air conditioner will restart.

[0073] Because fixed-frequency air conditioners frequently start and stop when they reach the set temperature and then shut down for protection, this can cause current surges to the generator. Therefore, it is necessary to obtain the current indoor temperature to determine whether the air conditioner meets the cooling set temperature shutdown protection conditions, in order to avoid damage to the generator caused by the frequent starting and stopping of the fixed-frequency air conditioner.

[0074] It should be noted that the preset operating mode can be set in advance, for example, the preset operating mode can be set to cooling mode or dehumidification mode, and this embodiment does not limit this.

[0075] It is understood that the current indoor temperature can be obtained through a temperature sensor. This temperature sensor can be pre-installed on the air conditioner or in the area where the air conditioner is located; this embodiment does not impose any restrictions on this.

[0076] Step S02: Detect whether the air conditioner meets the shutdown protection conditions based on the current indoor temperature and the set temperature of the air conditioner.

[0077] It should be noted that the set temperature can be preset by the user via the air conditioner's remote control, via the air conditioner's control interface, or via a pre-set terminal device. The pre-set terminal device can have the air conditioner's control program installed and a pre-established communication connection with the air conditioner.

[0078] It is understandable that step S02 may specifically involve: calculating the temperature difference between the current indoor temperature and the set temperature, and determining whether the temperature difference is less than or equal to a preset temperature threshold. The preset temperature threshold can be pre-set; for example, 2℃ can be set as the preset temperature threshold.

[0079] When the temperature difference is less than the preset temperature threshold, it means the current indoor temperature is about to equal the set temperature, and the air conditioner will enter the temperature-reaching shutdown protection state. Therefore, it can be determined that the air conditioner meets the shutdown protection conditions. When the temperature difference is greater than the preset temperature threshold, it means the temperature difference between the current indoor temperature and the set temperature is too large, and the air conditioner will not enter the temperature-reaching shutdown protection state. Therefore, it can be determined that the air conditioner does not meet the shutdown protection conditions.

[0080] The second embodiment uses the indoor temperature and the set temperature to determine whether the air conditioner is about to reach the temperature and shut down for protection, thereby accurately determining whether the air conditioner meets the shutdown protection conditions.

[0081] In the second embodiment, step S20 includes:

[0082] Step S201: Determine whether the current indoor temperature is equal to the set temperature.

[0083] It should be understood that in this embodiment, it is also necessary to verify whether the air conditioner has actually entered the temperature-reaching shutdown protection to determine whether it is necessary to switch to the battery to power the air conditioner, so as to avoid the generator from shutting down due to overload caused by frequent start-stop of the temperature-reaching shutdown protection.

[0084] It should be noted that in this embodiment and other embodiments, T1 represents the current indoor temperature, and T represents the indoor temperature. s This indicates the set temperature of the air conditioner. In T1 = T s When this happens, it indicates that the air conditioner has entered the temperature-reaching shutdown protection mode.

[0085] Step S202: If yes, disconnect the generator power supply circuit and connect the battery power supply circuit to switch the battery to power the air conditioner.

[0086] Understandably, the temperature-reaching shutdown protection causes frequent start-stop cycles of the fixed-frequency air conditioner, which in turn triggers the generator's overload protection shutdown, preventing the fixed-frequency air conditioner from starting normally. Therefore, when the fixed-frequency air conditioner is in the temperature-reaching shutdown protection state, first switch the air conditioner's power supply circuit to supply power to the air conditioner via the battery.

[0087] The second embodiment determines whether the air conditioner has truly entered the temperature-reaching shutdown protection by using the current indoor temperature and the set temperature. When the air conditioner truly enters the temperature-reaching shutdown protection, it switches to the battery to supply power to the air conditioner, so as to avoid the frequent start and stop of the temperature-reaching shutdown protection causing the generator to overload and shut down, preventing the air conditioner from starting normally.

[0088] In the second embodiment, after step S30, the method further includes:

[0089] Step S40: After the air conditioner has been running for a preset time, control the solenoid valve to close to restore the power of the air conditioner.

[0090] It should be noted that the preset time can be set in advance. For example, 1 minute can be set as the preset time.

[0091] It is understandable that restoring the air conditioner's power will cause current fluctuations. Therefore, in this embodiment, the air conditioner's power is restored before switching to generator power.

[0092] For ease of understanding, please refer to Figure 6 This explanation does not limit the scope of this solution. Figure 6 This diagram shows the refrigerant flow when the solenoid valve is closed in cooling mode. In the diagram, when the air conditioner is cooling, the refrigerant discharged by the compressor is diverted to the indoor unit through the four-way valve. After heat exchange in the indoor unit, the refrigerant flows into the outdoor unit through the throttling device because the solenoid valve is closed. After heat exchange in the outdoor unit, it returns to the compressor through the four-way valve for compression again, and the cycle repeats.

[0093] according to Figure 6 It can be seen that, as the refrigerant flows, it passes through the component where the throttling component is located again, thus restoring the power at the throttling component.

[0094] It should be understood that, since the indoor unit can be controlled to operate at the lowest fan speed while the solenoid valve is opened, the power consumption of the air conditioner can be further reduced. Therefore, in this embodiment, when restoring the power consumption of the air conditioner, the indoor unit can also be controlled to operate at the set fan speed to further restore the power consumption of the air conditioner.

[0095] It should be noted that the fan speed setting can be preset by the user via the air conditioner's remote control, via the air conditioner's control interface, or via a pre-set terminal device. The pre-set terminal device can have the air conditioner's control program installed and a pre-established communication connection with the air conditioner.

[0096] Step S50: When the air conditioner is detected to be in a stable state, connect the generator power supply circuit and disconnect the battery power supply circuit to switch the generator to supply power to the air conditioner.

[0097] It should be noted that a steady state can be a state in which the voltage of the air conditioner remains constant.

[0098] It should be understood that when the air conditioner's voltage remains constant, the air conditioner's current will not damage the generator. Therefore, in this situation, the power supply can be switched back to the generator to ensure power stability.

[0099] Understandably, the generator can also charge the battery while it is running, keeping the battery at a normal charge level.

[0100] In the second embodiment, when the air conditioner is started and in a stable state, the power supply is switched back to the generator power supply circuit to ensure the stability of the power supply. Before switching back to the generator power supply circuit, the power of the air conditioner is restored first to avoid damage to the generator caused by the current fluctuation caused by the power restoration.

[0101] Reference Figure 7 , Figure 7 This is a flowchart illustrating the third embodiment of the air conditioner control method of the present invention, based on the above. Figure 2 The first embodiment shown presents a third embodiment of the air conditioner control method of the present invention.

[0102] In the third embodiment, before step S10, the method further includes:

[0103] Step S01': When the air conditioner is in a preset operating mode, obtain the evaporator coil temperature of the air conditioner.

[0104] It should be understood that when the evaporator coil temperature of the indoor unit is low, the air conditioner will enter a cooling freeze or low-cooling protection state, causing the air conditioner to frequently start and stop, which may incur inrush current and cause the generator to overload and shut down. Therefore, it is also necessary to check the evaporator coil temperature of the air conditioner to determine whether the air conditioner has entered a cooling freeze or low-cooling protection state.

[0105] It should be noted that the preset operating mode can be set in advance, for example, the preset operating mode can be set to cooling mode or dehumidification mode, and this embodiment does not limit this.

[0106] Understandably, the evaporator coil temperature can be obtained using a temperature sensor. This temperature sensor can be pre-installed on the evaporator coil.

[0107] Step S02': Detect whether the air conditioner meets the shutdown protection conditions based on the evaporator coil temperature.

[0108] It is understandable that step S02' can specifically be: determining whether the evaporator coil temperature is lower than a preset freezing temperature threshold, and detecting whether the air conditioner meets the shutdown protection conditions based on the determination result. The preset freezing temperature threshold can be set in advance.

[0109] It should be understood that when the evaporator coil temperature is less than the preset freezing temperature threshold, it indicates that the air conditioner has entered the cooling freeze or low-cooling protection state. At this time, it can be determined that the air conditioner meets the shutdown protection conditions. When the evaporator coil temperature is greater than or equal to the preset freezing temperature threshold, it indicates that the air conditioner has not entered the cooling freeze or low-cooling protection state. At this time, it can be determined that the air conditioner does not meet the shutdown protection conditions.

[0110] In the third embodiment, the evaporator coil temperature is used to determine whether the air conditioner has entered the cooling freeze or low-cooling protection state, thereby accurately determining whether the air conditioner meets the shutdown protection conditions.

[0111] In the third embodiment, after step S30, the method further includes:

[0112] Step S40': After the air conditioner has been running for a preset time, control the solenoid valve to close to restore the power of the air conditioner.

[0113] It should be noted that the preset time can be set in advance. For example, 1 minute can be set as the preset time.

[0114] It is understandable that restoring the air conditioner's power will cause current fluctuations. Therefore, in this embodiment, the air conditioner's power is restored before switching to generator power.

[0115] For ease of understanding, please refer to Figure 6 This explanation does not limit the scope of this solution. Figure 6 This diagram shows the refrigerant flow when the solenoid valve is closed in cooling mode. In the diagram, when the air conditioner is cooling, the refrigerant discharged by the compressor is diverted to the indoor unit through the four-way valve. After heat exchange in the indoor unit, the refrigerant flows into the outdoor unit through the throttling device because the solenoid valve is closed. After heat exchange in the outdoor unit, it returns to the compressor through the four-way valve for compression again, and the cycle repeats.

[0116] according to Figure 6It can be seen that, as the refrigerant flows, it passes through the component where the throttling component is located again, thus restoring the power at the throttling component.

[0117] It should be understood that, since the indoor unit can be controlled to operate at the lowest fan speed while the solenoid valve is opened, the power consumption of the air conditioner can be further reduced. Therefore, in this embodiment, when restoring the power consumption of the air conditioner, the indoor unit can also be controlled to operate at the set fan speed to further restore the power consumption of the air conditioner.

[0118] It should be noted that the fan speed setting can be preset by the user via the air conditioner's remote control, via the air conditioner's control interface, or via a pre-set terminal device. The pre-set terminal device can have the air conditioner's control program installed and a pre-established communication connection with the air conditioner.

[0119] Step S50': When the air conditioner is detected to be in a stable state, connect the generator power supply circuit and disconnect the battery power supply circuit to switch the generator to supply power to the air conditioner.

[0120] It should be noted that a steady state can be a state in which the voltage of the air conditioner remains constant.

[0121] It should be understood that when the air conditioner's voltage remains constant, the air conditioner's current will not damage the generator. Therefore, in this situation, the power supply can be switched back to the generator to ensure power stability.

[0122] Understandably, the generator can also charge the battery while it is running, keeping the battery at a normal charge level.

[0123] In the third embodiment, when the air conditioner is started and in a stable state, the power supply is switched back to the generator power supply circuit to ensure power supply stability. Before switching back to the generator power supply circuit, the power of the air conditioner is restored first to avoid damage to the generator caused by current fluctuations during power restoration.

[0124] Reference Figure 8 , Figure 8 This is a flowchart illustrating the fourth embodiment of the air conditioner control method of the present invention, based on the above. Figure 2 The first embodiment shown presents a fourth embodiment of the air conditioner control method of the present invention.

[0125] In the fourth embodiment, before step S10, the method further includes:

[0126] Step S01: When the air conditioner is in a preset operating mode, obtain the total current of the air conditioner.

[0127] It should be understood that when the outdoor temperature is relatively high and the power current of the air conditioner is relatively large, the compressor may experience overload protection shutdown. At this time, the air conditioner will enter the cooling high-temperature protection state, generating an overload current impact on the generator, thereby causing damage to the generator. To avoid the above situation, the total current of the air conditioner is also detected in this embodiment.

[0128] It should be noted that the preset operation mode can be set in advance. For example, the preset operation mode can be set to the cooling mode or the dehumidification mode, and this embodiment does not limit this.

[0129] It can be understood that the total current of the whole machine can be detected and obtained through a preset detector. Among them, the preset detector can be a current detector.

[0130] Step S02": Detect whether the air conditioner meets the shutdown protection condition according to the total current of the air conditioner and the generator current threshold.

[0131] It should be noted that the generator current threshold can be set in advance. For example, the maximum current allowed by the generator can be set as the generator current threshold.

[0132] It should be understood that step S02" can specifically be: when I≥I0 - C0, it is determined that the air conditioner meets the shutdown protection condition; when I < I0 - C0, it is determined that the air conditioner does not meet the shutdown protection condition. Where I is the total current of the whole machine, I0 is the maximum current allowed by the generator, and C0 is a constant value, and C0 is greater than or equal to 15% of I0.

[0133] The fourth embodiment determines whether the air conditioner enters the cooling high-temperature protection state through the total current of the air conditioner, and thus can accurately determine whether the air conditioner meets the shutdown protection condition.

[0134] In the fourth embodiment, after the step S30, the following is further included:

[0135] Step S40": After the air conditioner operates for a preset time, control the solenoid valve to close and obtain the current total current of the air conditioner.

[0136] It should be noted that the preset time can be set in advance. For example, 1 minute can be set as the preset time.

[0137] It can be understood that since restoring the power of the air conditioner will cause current fluctuations. Therefore, in this embodiment, before switching to generator power supply, the power of the air conditioner is restored first.

[0138] For ease of understanding, reference Figure 6 is made for illustration, but does not limit this solution. Figure 6It is a refrigerant flow diagram when the solenoid valve is closed in the refrigeration mode. In the figure, when the air conditioner is in refrigeration, the refrigerant discharged by the compressor passes through the four-way valve and changes direction to enter the indoor unit. After heat exchange in the indoor unit, since the solenoid valve is closed, the refrigerant flows into the outdoor unit through the throttling component. After heat exchange at the outdoor unit, it returns to the compressor through the four-way valve for re-compression and repeats the cycle.

[0139] According to Figure 6 it can be seen that since the refrigerant flows through the component where the throttling component is located again during the flow, the power at the throttling component is restored.

[0140] It can be understood that since restoring the power of the air conditioner will also cause a change in the overall current of the unit, it is necessary to detect the current overall current of the air conditioner to determine whether the current overall current will impact the generator.

[0141] Step S50": Adjust the wind speed of the indoor unit and the power supply mode of the air conditioner according to the current overall current and the generator current threshold.

[0142] It should be understood that step S50" can specifically be: when I≥I0 - C0, continue to control the indoor unit to operate at the lowest wind speed and maintain power supply by the battery; when I < I0 - C0, control the indoor unit to operate at the set wind speed and switch back to power supply by the generator.

[0143] In the fourth embodiment, after the generator runs, the air conditioner is controlled based on the current overall current of the air conditioner, thereby ensuring the reliability of air conditioner control.

[0144] In addition, an embodiment of the present invention also proposes a storage medium, on which an air conditioner control program is stored. When the air conditioner control program is executed by a processor, it implements the air conditioner control method as described above.

[0145] In addition, referring to Figure 9 , an embodiment of the present invention also proposes an air conditioner control device, which includes:

[0146] In this embodiment, for the convenience of understanding, reference is made to Figure 3 for illustration, but the present solution is not limited thereto. Figure 3 It is a schematic diagram of an air conditioner system. In the figure, the dotted area is the air conditioner. The air conditioner consists of a compressor, a four-way valve, an indoor unit, a throttling component, a solenoid valve, and an outdoor component. The air conditioner is externally connected to an air conditioner electronic control, and the air conditioner electronic control is connected to the generator through a generator power supply circuit and to the battery through a battery power supply circuit.

[0147] A solenoid valve control module 10, configured to control the solenoid valve to open when it is detected that the air conditioner meets the shutdown protection condition, so that the refrigerant stops flowing into the throttling component.

[0148] It should be understood that the executing entity in this embodiment is the air conditioner, wherein the air conditioner may be a fixed-frequency air conditioner.

[0149] It is understandable that the instantaneous starting current of a fixed-frequency air conditioner is 6 to 8 times its rated current. Therefore, fixed-frequency air conditioners are more prone to causing the generator to shut down due to overload protection caused by frequent start-stop cycles.

[0150] It should be noted that the shutdown protection conditions can be the cooling temperature reaching shutdown protection condition, the cooling freezing or low-temperature shutdown protection condition, and the cooling high temperature shutdown protection condition.

[0151] For ease of understanding, please refer to Figure 4 This explanation does not limit the scope of this solution. Figure 4 This diagram shows the refrigerant flow direction when the solenoid valve is open in cooling mode. In the diagram, when the air conditioner is cooling, the refrigerant discharged by the compressor is diverted to the indoor unit through the four-way valve. After heat exchange in the indoor unit, due to the large flow resistance at the throttling component, the refrigerant flows directly into the outdoor unit through the solenoid valve. After heat exchange in the outdoor unit, it returns to the compressor through the four-way valve for compression again, and the cycle repeats.

[0152] according to Figure 4 It can be seen that because the refrigerant does not pass through the component where the throttling component is located when it flows, the power at the throttling component is saved, thereby reducing the power of the air conditioner.

[0153] It should be understood that, in this embodiment, while opening the solenoid valve, the indoor unit can also be controlled to operate at the lowest fan speed to further reduce the power consumption of the air conditioner.

[0154] The power supply switching module 20 is used to disconnect the generator power supply circuit and connect the battery power supply circuit to switch the battery to power the air conditioner.

[0155] It should be understood that, in order to avoid the current from the air conditioner restarting exceeding the generator's maximum allowable current, causing the generator to shut down due to overload protection and preventing the air conditioner from starting normally, this embodiment switches the air conditioner's power supply circuit before starting the air conditioner, so that the air conditioner is powered by the battery.

[0156] Understandably, it's also possible that when the generator's output voltage is lower than a set threshold (set to be no less than 15% of the rated voltage), the system switches to battery power to ensure the air conditioner operates normally.

[0157] The air conditioner start-up module 30 is used to control the air conditioner to start after the switching is completed.

[0158] It is understandable that the switching can be completed after the generator power supply circuit has switched to the battery power supply circuit.

[0159] In this embodiment, the current of the air conditioner is reduced by opening the solenoid valve, and the power supply is switched to the battery when the air conditioner restarts, thereby avoiding the generator shutdown caused by frequent start-stop of the air conditioner and ensuring the normal start-up of the air conditioner.

[0160] Other embodiments or specific implementations of the air conditioner control device of the present invention can be referred to the above-described method embodiments, and will not be repeated here.

[0161] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0162] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. In the unit claims listing several devices, several of these devices may be embodied by the same hardware item. The use of the terms first, second, and third, etc., does not indicate any order and can be interpreted as names.

[0163] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as a read-only memory image (ROM) / random access memory (RAM), magnetic disk, optical disk), and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0164] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. An air conditioner control method characterized by comprising: The air conditioner control method is applied to an air conditioner, the air conditioner comprising an indoor unit and an outdoor unit, a throttling component and an electromagnetic valve being arranged in parallel on a passage connecting the indoor unit and the outdoor unit, and the air conditioner being connected to a generator power supply circuit and a battery power supply circuit respectively; The air conditioner control method comprises the following steps: When it is detected that the air conditioner meets a shutdown protection condition, the electromagnetic valve is controlled to be opened so that refrigerant stops flowing into the throttling component, wherein the shutdown protection condition comprises that a current indoor temperature is equal to a set temperature of the air conditioner, or an evaporator coil temperature of the air conditioner is less than a preset freezing temperature threshold, or a whole machine current of the air conditioner is greater than a maximum current allowed by the generator minus a constant value; The generator power supply circuit is disconnected, and the battery power supply circuit is connected, so as to switch to battery power supply for the air conditioner; and After the switching is completed, the air conditioner is controlled to be started.

2. The air conditioner control method of claim 1, wherein, Before the step of controlling the electromagnetic valve to be opened so that refrigerant stops flowing into the throttling component when it is detected that the air conditioner meets the shutdown protection condition, the method further comprises the following steps: When the air conditioner is in a preset operation mode, a current indoor temperature is obtained; and Whether the air conditioner meets the shutdown protection condition is detected according to the current indoor temperature and the set temperature of the air conditioner.

3. The air conditioner control method of claim 2, wherein, The step of disconnecting the generator power supply circuit and connecting the battery power supply circuit so as to switch to battery power supply for the air conditioner comprises the following steps: Whether the current indoor temperature is equal to the set temperature is judged; and If yes, the generator power supply circuit is disconnected, and the battery power supply circuit is connected, so as to switch to battery power supply for the air conditioner.

4. The air conditioner control method of claim 1, wherein, Before the step of controlling the electromagnetic valve to be opened so that refrigerant stops flowing into the throttling component when it is detected that the air conditioner meets the shutdown protection condition, the method further comprises the following steps: When the air conditioner is in a preset operation mode, an evaporator coil temperature of the air conditioner is obtained; and Whether the air conditioner meets the shutdown protection condition is detected according to the evaporator coil temperature.

5. The air conditioner control method according to any one of claims 1 to 4, wherein After the step of controlling the air conditioner to be started after the switching is completed, the method further comprises the following steps: After the air conditioner runs for a preset time, the electromagnetic valve is controlled to be closed, so as to restore power supply of the air conditioner; and When it is detected that the air conditioner is in a stable state, the generator power supply circuit is connected, and the battery power supply circuit is disconnected, so as to switch to generator power supply for the air conditioner.

6. The air conditioner control method of claim 1, wherein, Before the step of controlling the electromagnetic valve to be opened so that refrigerant stops flowing into the throttling component when it is detected that the air conditioner meets the shutdown protection condition, the method further comprises the following steps: When the air conditioner is in a preset operation mode, a whole machine current of the air conditioner is obtained; and Whether the air conditioner meets the shutdown protection condition is detected according to the whole machine current and a generator current threshold.

7. The air conditioner control method according to claim 6, wherein After the step of controlling the air conditioner to be started after the switching is completed, the method further comprises the following steps: After the air conditioner runs for a preset time, the electromagnetic valve is controlled to be closed, and a current whole machine current of the air conditioner is obtained; and The wind speed of the indoor unit and the power supply mode of the air conditioner are adjusted according to the current whole machine current and the generator current threshold.

8. An air conditioner characterized by comprising: The air conditioner comprises an indoor unit and an outdoor unit, a throttling component and a solenoid valve are arranged in parallel on a passage connecting the indoor unit and the outdoor unit, the air conditioner is connected with a generator power supply circuit and a battery power supply circuit respectively; the air conditioner further comprises a memory, a processor and an air conditioner control program stored in the memory and executable on the processor, and the air conditioner control program realizes the air conditioner control method according to any one of claims 1 to 7 when executed by the processor.

9. A storage medium, characterized by The storage medium stores an air conditioner control program, and the air conditioner control program realizes the air conditioner control method according to any one of claims 1 to 7 when executed by the processor.

10. An air conditioner control device characterized by comprising: The air conditioner control device comprises: a solenoid valve control module configured to control the solenoid valve to open to stop the refrigerant from flowing into the throttling component when it is detected that the air conditioner meets a shutdown protection condition, wherein the shutdown protection condition comprises that a current indoor temperature is equal to a set temperature of the air conditioner, or an evaporator coil temperature of the air conditioner is less than a preset freezing temperature threshold, or a whole machine current of the air conditioner is greater than a maximum current allowed by the generator minus a constant value; a power supply switching module configured to disconnect the generator power supply circuit and connect the battery power supply circuit to switch to the battery to supply power to the air conditioner; an air conditioner starting module configured to control the air conditioner to start after the switching is completed.

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