Air conditioner and control method and control device thereof

Abstract

The application discloses an air conditioner and a control method and a control device thereof, and aims at improving the reliability, intelligence and comfort of the air conditioner. The control method comprises the following steps: acquiring the current working voltage of the air conditioner; when the current working voltage meets the preset voltage condition, the following control process is executed: acquiring the type and the current operation mode of the air conditioner; determining the current reference parameter according to the current operation mode; the reference parameter comprises the current outdoor environment temperature and the current indoor unit coil temperature; determining the current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter, and controlling the air conditioner to operate according to the current control strategy.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioning, and particularly relates to an air conditioner and a control method and control device thereof. BACKGROUND

[0002] In the control scheme of the existing air conditioner, the optimal operation parameter value under different conditions is obtained by setting test conditions, testing the operation of the air conditioner in the laboratory, and being fixed in the program of the air conditioner. When the air conditioner works at the user end, the operation of the air conditioner is controlled according to the set parameter value.

[0003] In the prior art, when the operation parameter value of the air conditioner is determined, the influence of different working voltages of the air conditioner on the operation parameter value is not considered. When the air conditioner is used at the user end, the operation parameter cannot be adjusted according to the working voltage of the air conditioner, and the shutdown of the air conditioner is prone to occur, which affects the reliability of the air conditioner, reduces the environmental comfort of the user of the air conditioner, and reduces the intelligence and competitiveness of the air conditioner. SUMMARY

[0004] An object of the present application is to provide a control method and control device of an air conditioner, which adaptively adjusts the control strategy of the air conditioner according to the working voltage of the air conditioner, so as to improve the reliability, intelligence and use comfort of the air conditioner.

[0005] To achieve the above-mentioned object, the control method of the air conditioner provided by the present application adopts the following technical scheme:

[0006] A control method of an air conditioner, the control method comprising:

[0007] obtaining a current working voltage of the air conditioner;

[0008] when the current working voltage meets a preset voltage condition, performing the following control process:

[0009] obtaining a type and a current operation mode of the air conditioner; the type includes a fixed-frequency air conditioner and a variable-frequency air conditioner, and the current operation mode includes a cooling mode and a heating mode;

[0010] determining a current reference parameter according to the current operation mode; the reference parameter includes a current outdoor environment temperature and a current indoor unit coil temperature;

[0011] determining a current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter, and controlling the operation of the air conditioner according to the current control strategy.

[0012] In some embodiments of the present application, determining a current reference parameter according to the current operation mode comprises:

[0013] when the current operation mode is the cooling mode, determining the current reference parameter as the current outdoor ambient temperature;

[0014] when the current operation mode is the heating mode, determining the current reference parameter as the current indoor unit coil temperature.

[0015] In some embodiments of the present application, the current control strategy of the air conditioner is determined according to the type, the current operation mode and the current reference parameter, comprising:

[0016] when the type is the fixed-frequency air conditioner, the current operation mode is the cooling mode, and the current reference parameter is the current outdoor ambient temperature, determining whether the current outdoor ambient temperature satisfies a first preset outdoor ambient temperature condition;

[0017] when the current outdoor ambient temperature satisfies the first preset outdoor ambient temperature condition, the current control strategy of the air conditioner comprises: the indoor fan speed is reduced to the allowed minimum speed; and the outdoor fan speed is kept;

[0018] when the current outdoor ambient temperature does not satisfy the first preset outdoor ambient temperature condition, the current control strategy of the air conditioner comprises: the indoor fan speed is reduced to the allowed minimum speed; and the outdoor fan speed is increased to the allowed maximum speed.

[0019] In some embodiments of the present application, the current control strategy of the air conditioner is determined according to the type, the current operation mode and the current reference parameter, comprising:

[0020] when the type is the fixed-frequency air conditioner, the current operation mode is the heating mode, and the current reference parameter is the current indoor unit coil temperature, determining whether the current indoor unit coil temperature satisfies a first preset indoor coil temperature condition;

[0021] when the current indoor unit coil temperature satisfies the first preset indoor coil temperature condition, the current control strategy of the air conditioner comprises: increasing the indoor fan speed; and reducing the outdoor fan speed;

[0022] when the current indoor unit coil temperature does not satisfy the first preset indoor coil temperature condition, the current control strategy of the air conditioner comprises: keeping the indoor fan speed; and keeping the outdoor fan speed.

[0023] In some embodiments of the present application, the current control strategy of the air conditioner is determined according to the type, the current operation mode and the current reference parameter, comprising:

[0024] When the type is the variable frequency air conditioner, the current operation mode is the cooling mode, and the current reference parameter is the current outdoor environment temperature, it is judged whether the current outdoor environment temperature satisfies a second preset outdoor ring temperature condition.

[0025] When the current outdoor environment temperature satisfies the second preset outdoor ring temperature condition, it is determined that the current control strategy of the air conditioner comprises: the indoor fan speed is reduced to the allowed minimum speed; and the compressor frequency is kept.

[0026] When the current outdoor environment temperature does not satisfy the second preset outdoor ring temperature condition, it is determined that the current control strategy of the air conditioner comprises: the indoor fan speed is reduced; the outdoor fan speed is increased to the allowed maximum speed; and the maximum exhaust temperature is reduced.

[0027] In some embodiments of the application, according to the type, the current operation mode and the current reference parameter, the current control strategy of the air conditioner is determined, comprising:

[0028] When the type is the variable frequency air conditioner, the current operation mode is the heating mode, and the current reference parameter is the current indoor coil temperature, it is judged whether the current indoor coil temperature satisfies a second preset indoor coil temperature condition.

[0029] When the current indoor coil temperature satisfies the second preset indoor coil temperature condition, it is determined that the current control strategy of the air conditioner comprises: the indoor fan speed is increased; the outdoor fan speed is reduced; and the expansion valve opening degree is increased.

[0030] When the current indoor coil temperature does not satisfy the second preset indoor coil temperature condition, it is determined that the current control strategy of the air conditioner comprises: the indoor fan speed is increased; the outdoor fan speed is kept; and the expansion valve opening degree is increased.

[0031] To achieve the above-mentioned purposes, the control device of the air conditioner provided by the application adopts the following technical scheme:

[0032] A control device of an air conditioner, the control device comprising:

[0033] A current working voltage acquisition unit configured to acquire a current working voltage of the air conditioner;

[0034] A current working voltage judgment unit configured to judge whether the current working voltage satisfies a preset voltage condition and output a judgment result;

[0035] A type acquisition unit configured to acquire a type of the air conditioner at least when the current working voltage satisfies the preset voltage condition; the type comprises a fixed frequency air conditioner and a variable frequency air conditioner;

[0036] A current operation mode acquisition unit is configured to acquire a current operation mode of the air conditioner at least when the current working voltage meets the preset voltage condition, wherein the current operation mode includes a cooling mode and a heating mode.

[0037] A current reference parameter acquisition unit is configured to determine a current reference parameter according to the current operation mode, wherein the reference parameter includes a current outdoor environment temperature and a current indoor unit coil temperature.

[0038] A current control strategy determination unit is configured to determine a current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter.

[0039] A control unit is configured to control the operation of the air conditioner according to the current control strategy.

[0040] The application further provides an air conditioner including an indoor unit and an outdoor unit, and the air conditioner further includes the control device of the air conditioner.

[0041] The application further provides an electronic device including a processor, a memory and a computer program stored in the memory, wherein the processor is configured to execute the computer program to implement the control method of the air conditioner.

[0042] The application further provides a computer storage medium, wherein the computer storage medium stores a computer program, and the computer program is executed by a processor to implement the control method of the air conditioner.

[0043] Compared with the prior art, the application has the following advantages and positive effects:

[0044] The air conditioner control method and the control device provided by the application take the current working voltage as a judgment parameter for adaptively adjusting the control strategy of the air conditioner, and different controls are performed according to the type, the operation mode and the reference parameter of the air conditioner when the working voltage meets the preset voltage condition, so that the ability loss is reduced, the working time of the air conditioner is prolonged, the air conditioner is prevented from stopping, the air conditioning performance of the air conditioner is maintained as much as possible, and the reliability, the intelligence and the use comfort of the air conditioner are improved.

[0045] Other features and advantages of the application will become more apparent after reading the specific embodiments of the application in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described below are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0047] Figure 1 The flowchart of the first embodiment of the control method of the air conditioner of the present application is shown.

[0048] Figure 2 The flowchart of the second embodiment of the control method of the air conditioner of the present application is shown.

[0049] Figure 3 The structural diagram of one embodiment of the control device of the air conditioner of the present application is shown.

[0050] Figure 4 The structural diagram of one embodiment of the electronic device of the present application is shown. DETAILED DESCRIPTION

[0051] In order to make the objects, technical solutions and advantages of the present application more clear, the following will further describe the present application in combination with the drawings and embodiments.

[0052] It should be noted that the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present application.

[0053] In view of the technical problem that the control of the prior art air conditioner does not consider the working voltage of the air conditioner, which causes the air conditioner to be prone to shutdown, affecting the working reliability and use comfort of the air conditioner, the present application creatively proposes to adaptively adjust the control strategy of the air conditioner according to the working voltage of the air conditioner. When the working voltage meets the preset voltage condition, different controls are performed according to the type of the air conditioner, the operation mode and the reference parameter, so as to achieve the technical effects of improving the reliability, intelligence and use comfort of the air conditioner.

[0054] Figure 1 The flowchart of the first embodiment of the control method of the air conditioner of the present application is shown.

[0055] As Figure 1 As shown in the schematic diagram, this embodiment adopts the following process to perform the control of the air conditioner.

[0056] Step 101: Obtain the current working voltage of the air conditioner.

[0057] The current working voltage is a real-time working voltage of the air conditioner acquired continuously according to a set sampling frequency. Specifically, the current working voltage can be acquired by using a detection device or a detection method capable of detecting the working voltage of the air conditioner in the prior art.

[0058] Step 102: Determine whether the current working voltage meets a preset voltage condition. If yes, perform step 103; otherwise, go to step 105.

[0059] The preset voltage condition is a known condition for determining whether different control strategies are used for the air conditioner, and can be a fixed condition or a dynamically variable condition. The preset voltage condition is set according to the following principle: when the current working voltage meets the preset voltage condition, the air conditioner is prone to shutdown, and the operating parameter value of the air conditioner needs to be adjusted so that the air conditioner operates at the operating parameter value to reduce the shutdown problem of the air conditioner as much as possible.

[0060] In some embodiments, the preset voltage condition is that the current working voltage is lower than a preset voltage threshold.

[0061] When the current working voltage is lower than the preset voltage threshold, it is determined that the current working voltage meets the preset voltage condition.

[0062] Step 103: Acquire the type and the current operating mode of the air conditioner, and determine the current reference parameter according to the current operating mode.

[0063] After it is determined that the current working voltage meets the preset voltage condition, the control strategy of the air conditioner is adjusted. First, the type and the current operating mode of the air conditioner are acquired, and then the current reference parameter is determined according to the current operating mode.

[0064] The type of the air conditioner includes a fixed-frequency air conditioner and a variable-frequency air conditioner, and the type of the air conditioner can be acquired according to system parameters of the air conditioner.

[0065] The current operating mode is a working mode in which the air conditioner is currently operating, including a cooling mode and a heating mode, and the current operating mode can be acquired according to operating parameters and / or set parameters of the air conditioner.

[0066] The current reference parameter includes a current outdoor environment temperature and a current indoor heat exchanger temperature. The current outdoor environment temperature is a real-time temperature of an outdoor environment in which an outdoor unit of the air conditioner is located, which is acquired continuously according to a set sampling frequency, and can be acquired by using a temperature detection device provided on the outdoor unit or by using an Internet network to acquire from a meteorological server. The current indoor heat exchanger temperature is a real-time heat exchanger temperature of a heat exchanger of an indoor unit of the air conditioner, which is acquired continuously according to a set sampling frequency, and can be acquired by using a temperature detection device provided on the heat exchanger.

[0067] In some embodiments, the current reference parameter is determined according to the current operating mode, including:

[0068] When the current operating mode is cooling mode, the current reference parameter is determined to be the current outdoor ambient temperature;

[0069] When the current operating mode is heating mode, the current reference parameter is determined to be the current indoor unit coil temperature.

[0070] Therefore, by selecting different reference parameters under different operating modes, the capacity loss of the air conditioner can be reduced, and the reliability and comfort of the air conditioner operation can be improved.

[0071] Step 104: Determine the current control strategy for the air conditioner based on the type, current operating mode, and current baseline parameters, and control the operation of the air conditioner according to the current control strategy.

[0072] The air conditioner has a pre-set matching relationship between type, operating mode, reference parameters, and control strategy. After determining the air conditioner type, current operating mode, and current reference parameters, the matching control strategy is invoked as the current control strategy to control the air conditioner's operation. For a more specific implementation of this matching relationship, see [link to implementation details]. Figure 2 Description of the embodiments.

[0073] Step 105: Maintain the default control policy.

[0074] If step 102 determines that the current operating voltage does not meet the preset voltage conditions, the air conditioner will continue to operate under the default control strategy. The default control strategy is a known, conventional control strategy that does not consider the air conditioner's operating voltage; it can be any possible control strategy for air conditioners in the prior art.

[0075] In this embodiment, by using the current operating voltage as a judgment parameter for adaptively adjusting the air conditioner control strategy, when the operating voltage meets the preset voltage conditions, different controls are executed according to the air conditioner type, operating mode, and reference parameters. This reduces capacity loss, extends the air conditioner's operating time, avoids air conditioner shutdown, and maintains the air conditioning performance of the air conditioner as much as possible, thereby achieving the technical effect of improving the reliability, intelligence, and user comfort of the air conditioner.

[0076] Figure 2 The diagram shown is a flowchart of the second embodiment of the control method for the air conditioner of the present invention.

[0077] like Figure 2 As shown, this embodiment uses the following process to control the air conditioner.

[0078] Step 201: Obtain the current operating voltage of the air conditioner.

[0079] Step 202: Determine whether the current operating voltage meets the preset voltage condition. If yes, proceed to step 204; otherwise, proceed to step 203.

[0080] The specific implementation process, parameter acquisition method, determination of the preset voltage condition, etc. of the above two steps are described in detail with reference to Figure 1 The corresponding description of the embodiments.

[0081] Step 203: Keep the default control strategy.

[0082] If it is determined in step 202 that the current working voltage does not satisfy the preset voltage condition, the air conditioner keeps the default control strategy running. The default control strategy is a conventional control strategy known without considering the working voltage of the air conditioner, which can be all possible control strategies of the air conditioner in the prior art

[0083] Step 204: Obtain the type and current running mode of the air conditioner.

[0084] After it is determined in step 202 that the current working voltage satisfies the preset voltage condition, the control strategy of the air conditioner will be adjusted. First, the type and current running mode of the air conditioner are obtained. The type of the air conditioner includes Figure 1 Similarly to the embodiments, in this Figure 2 In this embodiment, the type of the air conditioner includes a fixed-frequency air conditioner and a variable-frequency air conditioner, and the current running mode is the current working mode of the air conditioner, including a cooling mode and a heating mode.

[0085] Step 205: Determine whether the type of the air conditioner is a fixed-frequency air conditioner. If yes, the process of steps 206 to 215 is executed; otherwise, the process of steps 216 to 225 is executed.

[0086] The type of the air conditioner can be obtained according to the system parameters of the air conditioner, and different control processes are executed according to the determination result of the type.

[0087] Step 206: When it is determined that the type of the air conditioner is a fixed-frequency air conditioner, a fixed-frequency air conditioner control strategy is executed. Specifically, the process of steps 207 to 215 is executed.

[0088] Step 207: Determine whether the current running mode is a cooling mode. If yes, the process of steps 208 to 211 is executed; otherwise, the process of steps 212 to 215 is executed.

[0089] The current running mode can be obtained according to the running parameters and / or setting parameters of the air conditioner, and different control processes are executed according to the current running mode.

[0090] Step 208: When the current running mode is a cooling mode, it is determined that the current reference quantity is the current outdoor environment temperature, and the current outdoor environment temperature is obtained.

[0091] The current outdoor environment temperature means and the acquisition method refer to Figure 1 The corresponding description of the embodiments.

[0092] Step 209: Determine whether the current outdoor environment temperature meets the first preset outdoor ring temperature condition. If yes, execute step 210; otherwise, execute step 211.

[0093] The first preset outdoor ring temperature condition is a judgment condition for using different control strategies for the fixed-frequency air conditioner running in the cooling mode, and is a known condition. The condition can be a fixed condition or a dynamically variable condition.

[0094] In some embodiments, the first preset outdoor ring temperature condition is that the current outdoor environment temperature is not greater than a first preset outdoor ring temperature threshold.

[0095] When the current outdoor environment temperature is not greater than the first preset outdoor ring temperature threshold, it is determined that the current outdoor environment temperature meets the first preset outdoor ring temperature condition.

[0096] Step 210: Control the air conditioner to run according to the first control strategy.

[0097] The first control strategy includes: reducing the indoor fan speed to the allowed minimum speed; and keeping the outdoor fan speed.

[0098] That is, when the type of the air conditioner is a fixed-frequency air conditioner, the current running mode is a cooling mode, the current reference parameter is the current outdoor environment temperature, and the current outdoor environment temperature meets the first preset outdoor ring temperature condition, the indoor fan speed is controlled to be reduced to the allowed minimum speed to reduce the air conditioner cooling system pressure, reduce the air conditioner working current, and avoid the air conditioner from easily stopping due to the working voltage being too low. The indoor fan speed cannot be lower than the allowed minimum speed to maintain the stable operation of the system. At the same time, the outdoor fan speed is kept. It should be understood that the outdoor fan speed kept at this time means that the outdoor fan speed is not adjusted according to the working voltage of the air conditioner, but the outdoor fan speed is not a fixed speed. At this time, the speed of the outdoor fan can still be adjusted according to the default control strategy to meet the user's cooling demand for using the air conditioner.

[0099] Step 211: Control the air conditioner to run according to the second control strategy.

[0100] The second control strategy includes: reducing the indoor fan speed to the allowed minimum speed; and increasing the outdoor fan speed to the allowed maximum speed.

[0101] That is, when the type of the air conditioner is a fixed-frequency air conditioner, the current operation mode is a cooling mode, the current reference parameter is a current outdoor environment temperature, and the current outdoor environment temperature does not satisfy the first preset outdoor ring temperature condition, only reducing the control indoor fan speed to the lowest allowable speed cannot meet the requirement of reducing the system pressure, and the outdoor fan speed also needs to be controlled to increase to the highest allowable speed to reduce the air conditioner cooling system pressure, reduce the air conditioner working current, and avoid the air conditioner from easily shutting down due to the working voltage being too low.

[0102] Step 212: If the current operation mode is a non-cooling mode, the current operation mode is a heating mode, it is determined that the current reference parameter is a current indoor coil temperature, and the current indoor coil temperature is obtained.

[0103] The meaning and obtaining method of the current indoor coil temperature are referred to Figure 1 The corresponding description of the embodiment.

[0104] Step 213: It is determined whether the current indoor coil temperature satisfies a first preset indoor coil temperature condition. If yes, step 214 is performed; otherwise, step 215 is performed.

[0105] The first preset indoor coil temperature condition is a judgment condition for adopting different control strategies for the fixed-frequency air conditioner running in the heating mode, and is a known condition. The condition can be a fixed condition or a dynamically variable condition.

[0106] In some embodiments, the first preset indoor coil temperature condition is that the current indoor coil temperature is not less than a first preset indoor coil temperature threshold.

[0107] When the current indoor coil temperature is not less than the first preset indoor coil temperature threshold, it is determined that the current indoor coil temperature satisfies the first preset indoor coil temperature condition.

[0108] Step 214: The air conditioner is controlled to run according to a third control strategy.

[0109] The third control strategy includes increasing the indoor fan speed and reducing the outdoor fan speed.

[0110] When the type of the air conditioner is a fixed-frequency air conditioner, the current operation mode is a heating mode, the current reference parameter is a current indoor coil temperature, and the current indoor coil temperature satisfies the first preset indoor coil temperature condition, the indoor fan speed is controlled to increase, and the outdoor fan speed is controlled to reduce to reduce the air conditioner cooling system pressure, reduce the air conditioner working current, and avoid the air conditioner from easily shutting down due to the working voltage being too low. In some embodiments, the indoor fan speed can be controlled to increase to 1.5 times of a default indoor fan speed determined in the default control strategy, and the outdoor fan speed can be controlled to reduce to the lowest allowable speed.

[0111] Step 215: The air conditioner is controlled to run according to a fourth control strategy.

[0112] The fourth control strategy includes: indoor fan speed maintaining; outdoor fan speed maintaining.

[0113] When the type of the air conditioner is the fixed-frequency air conditioner, the current operation mode is the heating mode, the current reference parameter is the current indoor coil temperature, and the current indoor coil does not satisfy the first preset indoor coil temperature condition, the speed of the indoor fan and the speed of the outdoor fan are maintained, the speed of the outdoor fan is not adjusted according to the working voltage of the air conditioner, and the air conditioner is still controlled according to the default control strategy.

[0114] Step 216: If it is determined in step 205 that the type of the air conditioner is not the fixed-frequency air conditioner, the type of the air conditioner is the variable-frequency air conditioner, and the variable-frequency air conditioner control strategy will be executed. Specifically, the process of steps 217 to 225 is executed.

[0115] Step 217: It is determined whether the current operation mode is the cooling mode. If yes, the process of steps 218 to 221 is executed; otherwise, the process of steps 222 to 225 is executed.

[0116] As described above, it can be determined that the current operation mode is the cooling mode or the heating mode according to the operation parameters and / or the set parameters of the air conditioner, and different control processes are executed according to the different current operation modes.

[0117] Step 218: When the current operation mode is the cooling mode, it is determined that the current reference parameter is the current outdoor environment temperature, and the current outdoor environment temperature is obtained.

[0118] Step 219: It is determined whether the current outdoor environment temperature satisfies the second preset outdoor ring temperature condition. If yes, step 220 is executed; otherwise, step 221 is executed.

[0119] The second preset outdoor ring temperature condition is a judgment condition for adopting different control strategies for the variable-frequency air conditioner operating in the cooling mode, and is a known condition. The condition can be a fixed condition or a dynamically variable condition.

[0120] In some embodiments, the second preset outdoor ring temperature condition is that the current outdoor environment temperature is not greater than a second preset outdoor ring temperature threshold.

[0121] When the current outdoor environment temperature is not greater than the second preset outdoor ring temperature threshold, it is determined that the current outdoor environment temperature satisfies the second preset outdoor ring temperature condition.

[0122] Step 220: The air conditioner is controlled to operate according to the fifth control strategy.

[0123] The fifth control strategy includes: the indoor fan speed is reduced to the allowed minimum speed; the compressor frequency is maintained.

[0124] In the case that the type of the air conditioner is a variable frequency air conditioner, the current operation mode is a cooling mode, the current reference variable is a current outdoor ambient temperature, and the current outdoor ambient temperature satisfies a second preset outdoor ambient temperature condition, the indoor fan speed is reduced to a lowest allowable speed, the air conditioner cooling system pressure is reduced, the air conditioner working current is reduced, and the air conditioner is prevented from being easily shut down due to a too low working voltage. Meanwhile, the compressor frequency is kept to maintain the cooling effect of the air conditioner. It should be understood that the compressor frequency keeping means that the compressor frequency is not adjusted according to the working voltage of the air conditioner, rather than that the compressor has a fixed frequency. At this time, the compressor frequency can still be adjusted according to the default control strategy to meet the cooling demand of the user using the air conditioner.

[0125] Step 221: controlling the air conditioner to operate according to the sixth control strategy.

[0126] The sixth control strategy includes: reducing the indoor fan speed; increasing the outdoor fan speed to a highest allowable speed; and reducing the maximum exhaust temperature.

[0127] In the case that the type of the air conditioner is a variable frequency air conditioner, the current operation mode is a cooling mode, the current reference variable is a current outdoor ambient temperature, and the current outdoor ambient temperature does not satisfy the second preset outdoor ambient temperature condition, the indoor fan speed is reduced, the outdoor fan speed is increased to a highest allowable speed, the air conditioner cooling system pressure is reduced, the air conditioner working current is reduced, and the air conditioner is prevented from being easily shut down due to a too low working voltage. Meanwhile, the maximum exhaust temperature is also reduced, so that the air conditioner system operates more safely. In some embodiments, the indoor fan speed can be reduced to 0.7 times the default indoor fan speed determined according to the default control strategy, and the maximum exhaust temperature can be reduced by 10℃.

[0128] Step 222: if the current operation mode is a non-cooling mode, and the current operation mode is a heating mode, it is determined that the current reference variable is a current indoor coil temperature, and the current indoor coil temperature is obtained.

[0129] The meaning and obtaining method of the current indoor coil temperature are described in the corresponding description of the embodiments. Figure 1 The corresponding description of the embodiments.

[0130] Step 223: determining whether the current indoor coil temperature satisfies a second preset indoor coil temperature condition. If yes, step 224 is performed; otherwise, step 225 is performed.

[0131] The second preset indoor coil temperature condition is a judgment condition for adopting different control strategies for the variable frequency air conditioner operating in a heating mode, and is a known condition. The condition can be fixed and unchangeable, or can be dynamically variable.

[0132] In some embodiments, the second preset indoor coil temperature condition is that the current indoor coil temperature is not less than a second preset indoor coil temperature threshold.

[0133] When the current indoor coil temperature is not less than the second preset indoor coil temperature threshold, it is determined that the current indoor coil temperature satisfies the second preset indoor coil temperature condition.

[0134] Step 224: controlling the air conditioner to operate according to the seventh control strategy.

[0135] The seventh control strategy comprises: increasing the indoor fan rotating speed; decreasing the outdoor fan rotating speed; and increasing the opening degree of the expansion valve.

[0136] When the type of the air conditioner is a variable frequency air conditioner, the current operating mode is a heating mode, the current reference variable is the current indoor coil temperature, and the current indoor coil satisfies the second preset indoor coil temperature condition, the indoor fan rotating speed is controlled to be increased, and the outdoor fan rotating speed is controlled to be decreased, so as to reduce the refrigeration system pressure of the air conditioner, reduce the working current of the air conditioner, and avoid the air conditioner from being easily shut down due to the working voltage being too low. Meanwhile, the opening degree of the expansion valve is increased, so as to improve the heating capacity of the air conditioner and meet the heating demand of the user using the air conditioner as much as possible.

[0137] Step 225: controlling the air conditioner to operate according to the eighth control strategy.

[0138] The eighth control strategy comprises: increasing the indoor fan rotating speed; keeping the outdoor fan rotating speed; and increasing the opening degree of the expansion valve.

[0139] When the type of the air conditioner is a variable frequency air conditioner, the current operating mode is a heating mode, the current reference variable is the current indoor coil temperature, and the current indoor coil does not satisfy the second preset indoor coil temperature condition, the indoor fan rotating speed is controlled to be increased, so as to reduce the refrigeration system pressure of the air conditioner, reduce the working current of the air conditioner, and avoid the air conditioner from being easily shut down due to the working voltage being too low. Meanwhile, the outdoor fan rotating speed is kept, and the opening degree of the expansion valve is increased, so as to improve the heating capacity of the air conditioner and meet the heating demand of the user using the air conditioner as much as possible. The outdoor fan rotating speed keeping means that the outdoor fan rotating speed is not adjusted according to the working voltage of the air conditioner, and the outdoor fan rotating speed can still be regulated and controlled according to the default control strategy.

[0140] Figure 3 Fig. 1 shows a structural schematic diagram of an embodiment of the control device of the air conditioner. The control device of the embodiment comprises structural units, functions of the structural units, and the relationship between the structural units, which are as follows:

[0141] The control device comprises:

[0142] A current working voltage acquisition unit 301 is configured to acquire the current working voltage of the air conditioner.

[0143] A current working voltage judgment unit 302 is configured to judge whether the current working voltage acquired by the current working voltage acquisition unit 301 satisfies a preset voltage condition, and output a judgment result.

[0144] The type acquisition unit 303 is configured to acquire the type of the air conditioner at least when the current working voltage determination unit 302 determines that the current working voltage meets the preset voltage condition; the type includes a fixed-frequency air conditioner and a variable-frequency air conditioner.

[0145] The current operation mode acquisition unit 304 is configured to acquire the current operation mode of the air conditioner at least when the current working voltage determination unit 302 determines that the current working voltage meets the preset voltage condition; the current operation mode includes a cooling mode and a heating mode.

[0146] The current reference parameter acquisition unit 305 is configured to determine the current reference parameter according to the current operation mode acquired by the current operation mode acquisition unit 304; the reference parameter includes a current outdoor environment temperature and a current indoor unit coil temperature.

[0147] The current control strategy determination unit 306 is configured to determine the current control strategy of the air conditioner according to the type acquired by the type acquisition unit 303, the current operation mode acquired by the current operation mode acquisition unit 304, and the current reference parameter determined by the current reference parameter acquisition unit 305.

[0148] The control unit 307 is configured to control the operation of the air conditioner according to the current control strategy determined by the current control strategy determination unit 306.

[0149] The control device with the above structure runs the corresponding software program, executes the corresponding function, and controls the air conditioner according to the process of the air conditioner control method embodiment shown above and other embodiments, so as to achieve the corresponding technical effects of the air conditioner control method embodiment shown above and other embodiments. Figure 1 、 Figure 2 The air conditioner control method embodiment shown above and other embodiments control the air conditioner, and achieve the corresponding technical effects of the air conditioner control method embodiment shown above and other embodiments. Figure 1 、 Figure 2 The air conditioner control method embodiment shown above and other embodiments control the air conditioner, and achieve the corresponding technical effects of the air conditioner control method embodiment shown above and other embodiments.

[0150] The air conditioner control device of the above embodiment is applied to the air conditioner, and can achieve the technical effects of improving the reliability, intelligence and use comfort of the air conditioner.

[0151] Figure 4 A structural block diagram of one embodiment of the electronic device of the present application is shown. The electronic device includes a processor 41, a memory 42, and a computer program 421 stored in the memory 42, the processor 41 is configured to execute the computer program 421, and realize the functions of the electronic device. Figure 1 The embodiment, Figure 2 The control method of the air conditioner of the embodiment and other embodiments is shown, and the technical effects of the corresponding embodiments are realized. The electronic device can be a main control board, a controller, etc. of the air conditioner.

[0152] The above examples are only used to illustrate the technical solutions of the present application, but not to limit the present application; although the present application has been described in detail with reference to the foregoing examples, the technical solutions recorded in the foregoing examples can still be modified by those of ordinary skill in the art, or some technical features thereof can be replaced by equivalent replacements; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed by the present application.

Claims

1. A control method of an air conditioner, characterized by, The control method comprises: acquiring a current working voltage of the air conditioner; when the current working voltage meets a preset voltage condition, performing the following control process: acquiring a type and a current operation mode of the air conditioner; the type comprises a fixed-frequency air conditioner and a variable-frequency air conditioner, and the current operation mode comprises a cooling mode and a heating mode; determining a current reference parameter according to the current operation mode; the reference parameter comprises a current outdoor environment temperature and a current indoor unit coil temperature; determining an air conditioner current control strategy according to the type, the current operation mode and the current reference parameter, and controlling the air conditioner to operate according to the current control strategy; determining a current reference parameter according to the current operation mode comprises: when the current operation mode is the cooling mode, determining the current reference parameter as the current outdoor environment temperature; when the current operation mode is the heating mode, determining the current reference parameter as the current indoor unit coil temperature; determining an air conditioner current control strategy according to the type, the current operation mode and the current reference parameter comprises: when the type is the fixed-frequency air conditioner, the current operation mode is the cooling mode, and the current reference parameter is the current outdoor environment temperature, judging whether the current outdoor environment temperature meets a first preset outdoor ring temperature condition; when the current outdoor environment temperature meets the first preset outdoor ring temperature condition, the current control strategy of the air conditioner comprises: the indoor fan speed is reduced to the allowed minimum speed; and the outdoor fan speed is kept; when the current outdoor environment temperature does not meet the first preset outdoor ring temperature condition, the current control strategy of the air conditioner comprises: the indoor fan speed is reduced to the allowed minimum speed; and the outdoor fan speed is increased to the allowed maximum speed.

2. A control method of an air conditioner, characterized by, The control method comprises: acquiring a current working voltage of the air conditioner; when the current working voltage meets a preset voltage condition, performing the following control process: acquiring a type and a current operation mode of the air conditioner; the type comprises a fixed-frequency air conditioner and a variable-frequency air conditioner, and the current operation mode comprises a cooling mode and a heating mode; determining a current reference parameter according to the current operation mode; the reference parameter comprises a current outdoor environment temperature and a current indoor unit coil temperature; determining an air conditioner current control strategy according to the type, the current operation mode and the current reference parameter, and controlling the air conditioner to operate according to the current control strategy; determining a current reference parameter according to the current operation mode comprises: when the current operation mode is the cooling mode, determining the current reference parameter as the current outdoor environment temperature; when the current operation mode is the heating mode, determining the current reference parameter as the current indoor unit coil temperature; determining an air conditioner current control strategy according to the type, the current operation mode and the current reference parameter comprises: when the type is the fixed-frequency air conditioner, the current operation mode is the heating mode, and the current reference parameter is the current indoor unit coil temperature, judging whether the current indoor unit coil temperature meets a first preset indoor coil temperature condition; When the current indoor unit coil temperature meets the first preset indoor coil temperature condition, determining the current control strategy of the air conditioner comprises: increasing the indoor fan rotating speed; and decreasing the outdoor fan rotating speed. When the current indoor unit coil temperature does not meet the first preset indoor coil temperature condition, determining the current control strategy of the air conditioner comprises: keeping the indoor fan rotating speed; and keeping the outdoor fan rotating speed.

3. A control method of an air conditioner, characterized by, The control method comprises: acquiring a current working voltage of the air conditioner; when the current working voltage meets a preset voltage condition, performing the following control process: acquiring a type and a current operation mode of the air conditioner; the type comprises a fixed-frequency air conditioner and a variable-frequency air conditioner, and the current operation mode comprises a cooling mode and a heating mode; determining a current reference parameter according to the current operation mode; the reference parameter comprises a current outdoor environment temperature and a current indoor unit coil temperature; determining a current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter, and controlling the air conditioner to operate according to the current control strategy; determining a current reference parameter according to the current operation mode comprises: when the current operation mode is the cooling mode, determining the current reference parameter as the current outdoor environment temperature; when the current operation mode is the heating mode, determining the current reference parameter as the current indoor unit coil temperature; determining a current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter comprises: when the type is the variable-frequency air conditioner, the current operation mode is the cooling mode, and the current reference parameter is the current outdoor environment temperature, judging whether the current outdoor environment temperature meets a second preset outdoor environment temperature condition; when the current outdoor environment temperature meets the second preset outdoor environment temperature condition, determining the current control strategy of the air conditioner comprises: decreasing the indoor fan rotating speed to a lowest allowable rotating speed; and keeping the compressor frequency; when the current outdoor environment temperature does not meet the second preset outdoor environment temperature condition, determining the current control strategy of the air conditioner comprises: decreasing the indoor fan rotating speed; increasing the outdoor fan rotating speed to a highest allowable rotating speed; and decreasing a maximum exhaust temperature.

4. A control method of an air conditioner, characterized by, The control method comprises: acquiring a current working voltage of the air conditioner; when the current working voltage meets a preset voltage condition, performing the following control process: acquiring a type and a current operation mode of the air conditioner; the type comprises a fixed-frequency air conditioner and a variable-frequency air conditioner, and the current operation mode comprises a cooling mode and a heating mode; determining a current reference parameter according to the current operation mode; the reference parameter comprises a current outdoor environment temperature and a current indoor unit coil temperature; determining a current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter, and controlling the air conditioner to operate according to the current control strategy; determining a current reference parameter according to the current operation mode comprises: when the current operation mode is the cooling mode, determining the current reference parameter as the current outdoor environment temperature; when the current operation mode is the heating mode, determining the current reference parameter as the current indoor unit coil temperature; determining the current reference parameter as the current indoor unit coil temperature when the current operation mode is the heating mode; determining an air conditioner current control strategy according to the type, the current operation mode and the current reference parameter, comprising: judging whether the current indoor unit coil temperature meets a second preset indoor coil temperature condition when the type is the variable frequency air conditioner, the current operation mode is the heating mode and the current reference parameter is the current indoor unit coil temperature; determining the current control strategy of the air conditioner comprising: increasing the indoor fan rotating speed; reducing the outdoor fan rotating speed; and increasing the expansion valve opening degree when the current indoor unit coil temperature meets the second preset indoor coil temperature condition; determining the current control strategy of the air conditioner comprising: increasing the indoor fan rotating speed; keeping the outdoor fan rotating speed; and increasing the expansion valve opening degree when the current indoor unit coil temperature does not meet the second preset indoor coil temperature condition.

5. A control device for an air conditioner, characterized by comprising: the control device comprises: a current working voltage acquisition unit configured to acquire a current working voltage of the air conditioner; a current working voltage judgment unit configured to judge whether the current working voltage meets a preset voltage condition and output a judgment result; a type acquisition unit configured to acquire a type of the air conditioner at least when the current working voltage meets the preset voltage condition; the type comprising a fixed frequency air conditioner and a variable frequency air conditioner; a current operation mode acquisition unit configured to acquire a current operation mode of the air conditioner at least when the current working voltage meets the preset voltage condition; the current operation mode comprising a cooling mode and a heating mode; a current reference parameter acquisition unit configured to determine a current reference parameter according to the current operation mode; the reference parameter comprising a current outdoor environment temperature and a current indoor unit coil temperature; determining the current reference parameter as the current outdoor environment temperature when the current operation mode is the cooling mode; determining the current reference parameter as the current indoor unit coil temperature when the current operation mode is the heating mode; a current control strategy determination unit configured to determine an air conditioner current control strategy according to the type, the current operation mode and the current reference parameter; judging whether the current outdoor environment temperature meets a first preset outdoor coil temperature condition when the type is the fixed frequency air conditioner, the current operation mode is the cooling mode and the current reference parameter is the current outdoor environment temperature; determining the current control strategy of the air conditioner comprising: reducing the indoor fan rotating speed to an allowed minimum rotating speed; keeping the outdoor fan rotating speed when the current outdoor environment temperature meets the first preset outdoor coil temperature condition; determining the current control strategy of the air conditioner comprising: reducing the indoor fan rotating speed to an allowed minimum rotating speed; increasing the outdoor fan rotating speed to an allowed maximum rotating speed when the current outdoor environment temperature does not meet the first preset outdoor coil temperature condition; a control unit configured to control the air conditioner to operate according to the current control strategy.

6. A control device for an air conditioner, characterized by comprising: the control device comprises: a current working voltage acquisition unit configured to acquire a current working voltage of the air conditioner; The current working voltage judgment unit is configured to judge whether the current working voltage meets a preset voltage condition and output a judgment result. The type acquisition unit is configured to acquire a type of the air conditioner at least when the current working voltage meets the preset voltage condition; the type includes a fixed-frequency air conditioner and a variable-frequency air conditioner. The current working mode acquisition unit is configured to acquire a current working mode of the air conditioner at least when the current working voltage meets the preset voltage condition; the current working mode includes a cooling mode and a heating mode. The current reference parameter acquisition unit is configured to determine a current reference parameter according to the current working mode; the reference parameter includes a current outdoor environment temperature and a current indoor unit coil temperature; when the current working mode is the cooling mode, the current reference parameter is determined as the current outdoor environment temperature; when the current working mode is the heating mode, the current reference parameter is determined as the current indoor unit coil temperature. The current control strategy determination unit is configured to determine a current control strategy of the air conditioner according to the type, the current working mode and the current reference parameter; when the type is the fixed-frequency air conditioner, the current working mode is the heating mode and the current reference parameter is the current indoor unit coil temperature, it is judged whether the current indoor unit coil temperature meets a first preset indoor coil temperature condition; when the current indoor unit coil temperature meets the first preset indoor coil temperature condition, the current control strategy of the air conditioner is determined to include: increasing an indoor fan rotating speed; reducing an outdoor fan rotating speed; when the current indoor unit coil temperature does not meet the first preset indoor coil temperature condition, the current control strategy of the air conditioner is determined to include: keeping the indoor fan rotating speed; keeping the outdoor fan rotating speed. The control unit is configured to control the air conditioner to operate according to the current control strategy.

7. A control device for an air conditioner, characterized by comprising: The control device includes: The current working voltage acquisition unit is configured to acquire a current working voltage of the air conditioner. The current working voltage judgment unit is configured to judge whether the current working voltage meets a preset voltage condition and output a judgment result. The type acquisition unit is configured to acquire a type of the air conditioner at least when the current working voltage meets the preset voltage condition; the type includes a fixed-frequency air conditioner and a variable-frequency air conditioner. The current working mode acquisition unit is configured to acquire a current working mode of the air conditioner at least when the current working voltage meets the preset voltage condition; the current working mode includes a cooling mode and a heating mode. The current reference parameter acquisition unit is configured to determine a current reference parameter according to the current working mode; the reference parameter includes a current outdoor environment temperature and a current indoor unit coil temperature; when the current working mode is the cooling mode, the current reference parameter is determined as the current outdoor environment temperature; when the current working mode is the heating mode, the current reference parameter is determined as the current indoor unit coil temperature. The current control strategy determination unit is configured to determine a current control strategy of the air conditioner according to the type, the current operation mode, and the current reference parameter; when the type is the variable-frequency air conditioner, the current operation mode is the cooling mode, and the current reference parameter is the current outdoor environment temperature, it is determined whether the current outdoor environment temperature satisfies a second preset outdoor ring temperature condition; when the current outdoor environment temperature satisfies the second preset outdoor ring temperature condition, it is determined that the current control strategy of the air conditioner includes: reducing the indoor fan speed to the lowest allowable speed; keeping the compressor frequency; when the current outdoor environment temperature does not satisfy the second preset outdoor ring temperature condition, it is determined that the current control strategy of the air conditioner includes: reducing the indoor fan speed; increasing the outdoor fan speed to the highest allowable speed; and reducing the maximum exhaust temperature. The control unit is configured to control the air conditioner to operate according to the current control strategy.

8. A control device for an air conditioner, characterized by comprising: The control device comprises: A current working voltage acquisition unit is configured to acquire a current working voltage of the air conditioner. A current working voltage judgment unit is configured to determine whether the current working voltage satisfies a preset voltage condition and output a judgment result. A type acquisition unit is configured to acquire a type of the air conditioner at least when the current working voltage satisfies the preset voltage condition; the type includes a fixed-frequency air conditioner and a variable-frequency air conditioner. A current operation mode acquisition unit is configured to acquire a current operation mode of the air conditioner at least when the current working voltage satisfies the preset voltage condition; the current operation mode includes a cooling mode and a heating mode. A current reference parameter acquisition unit is configured to determine a current reference parameter according to the current operation mode; the reference parameter includes a current outdoor environment temperature and a current indoor unit coil temperature; when the current operation mode is the cooling mode, the current reference parameter is determined as the current outdoor environment temperature; when the current operation mode is the heating mode, the current reference parameter is determined as the current indoor unit coil temperature. A current control strategy determination unit is configured to determine a current control strategy of the air conditioner according to the type, the current operation mode, and the current reference parameter; when the type is the variable-frequency air conditioner, the current operation mode is the heating mode, and the current reference parameter is the current indoor unit coil temperature, it is determined whether the current indoor unit coil temperature satisfies a second preset indoor coil temperature condition; when the current indoor unit coil temperature satisfies the second preset indoor coil temperature condition, it is determined that the current control strategy of the air conditioner includes: increasing the indoor fan speed; reducing the outdoor fan speed; and increasing the opening degree of the expansion valve; when the current indoor unit coil temperature does not satisfy the second preset indoor coil temperature condition, it is determined that the current control strategy of the air conditioner includes: increasing the indoor fan speed; keeping the outdoor fan speed; and increasing the opening degree of the expansion valve.

9. An air conditioner comprising an indoor unit and an outdoor unit, characterized by comprising: The control unit is configured to control the air conditioner to operate according to the current control strategy. The air conditioner further comprises the control device of the air conditioner according to any one of claims 5 to 8.

10. An electronic device comprising a processor, a memory, and a computer program stored on the memory, wherein, The processor is configured to execute the computer program to implement the control method of the air conditioner according to any one of claims 1 to 4.

11. A computer storage medium having stored thereon a computer program, characterized in that: The computer program, when executed by the processor, implements the control method of the air conditioner according to any one of claims 1 to 4.

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