Control method and device of air conditioner and air conditioner

Abstract

The application provides a control method and device of an air conditioner and the air conditioner, the method comprising: when a compressor in the air conditioner is started and an operation mode of the air conditioner is a refrigeration mode, controlling a first electrically-controlled three-way valve to execute a first passage, controlling a second electrically-controlled three-way valve to execute a second passage, and obtaining a temperature difference of indoor and outdoor environment temperatures; and based on the temperature difference, controlling a frequency of the compressor and an opening degree of an electronic expansion valve in the air conditioner. The control method and device of the air conditioner and the air conditioner provided by the application can, when the operation mode of the air conditioner is the refrigeration mode, directly heat refrigerant by using solar energy and more flexibly control the frequency of the compressor and the opening degree of the electronic expansion valve based on the temperature difference of the indoor and outdoor environment temperatures, so that the heat exchange capacity of the air conditioner is effectively supplemented, the efficiency of the compressor is improved, energy loss in the energy conversion process is reduced, and the energy consumption of the air conditioner is effectively reduced.

Description

Technical Field

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

[0002] In modern life, air conditioners are an essential piece of equipment in indoor spaces. By controlling the indoor ambient temperature, air conditioners can provide users with a comfortable living or working environment.

[0003] Traditional air conditioners typically use mains electricity as their power source. They convert electrical energy into internal energy through a series of energy conversions to achieve cooling and heating functions.

[0004] However, traditional air conditioners consume a relatively high amount of energy during operation. With the increase in the number of installed air conditioners and the arrival of the energy crisis, how to reduce the energy consumption of air conditioners during operation is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] This invention provides a control method, device, and air conditioner for air conditioners, which solves the problem of high energy consumption in the operation of air conditioners in the prior art and reduces the energy consumption of air conditioners during operation.

[0006] This invention provides a control method for an air conditioner, comprising:

[0007] When the compressor in the air conditioner is started, obtain the operating mode of the air conditioner;

[0008] When the air conditioner is in cooling mode, the first electrically controlled three-way valve is controlled to execute the first passage, the second electrically controlled three-way valve is controlled to execute the second passage, and the temperature difference between the indoor and outdoor ambient temperatures is obtained.

[0009] Based on the temperature difference, the frequency of the compressor and the opening degree of the electronic expansion valve in the air conditioner are controlled;

[0010] Wherein, the first passage is the passage between the first port and the third port of the first electrically controlled three-way valve; the second passage is the passage between the first port and the second port of the second electrically controlled three-way valve; the first port of the first electrically controlled three-way valve is connected to the first port of the compressor through the condenser, and the third port of the first electrically controlled three-way valve is connected to the third port of the solar heating device through the electronic expansion valve and the evaporator; the first port of the second electrically controlled three-way valve is connected to the second port of the compressor, and the second port of the second electrically controlled three-way valve is connected to the fourth port of the solar heating device; the solar heating device is used to heat the flowing refrigerant using solar energy.

[0011] According to a control method for an air conditioner provided by the present invention, after obtaining the operating mode of the air conditioner, the method further includes:

[0012] When the air conditioner is in heating mode, the first electrically controlled three-way valve is controlled to execute the third passage, the second electrically controlled three-way valve is controlled to execute the fourth passage, and the temperature difference is obtained.

[0013] Based on the temperature difference, the frequency of the compressor and the opening degree of the electronic expansion valve are controlled;

[0014] The third passage is the passage between the first port of the first electrically controlled three-way valve and the second port of the first electrically controlled three-way valve; the fourth passage is the passage between the first port of the second electrically controlled three-way valve and the third port of the second electrically controlled three-way valve; the second port of the first electrically controlled three-way valve is connected to the first port of the solar heating device; the third port of the second electrically controlled three-way valve is connected to the second port of the solar heating device through the electronic expansion valve and the evaporator.

[0015] According to a control method for an air conditioner provided by the present invention, the step of controlling the frequency of the compressor based on the temperature difference includes:

[0016] When the temperature difference is within a first temperature range, the compressor is controlled to operate at a first frequency;

[0017] When the temperature difference is in the second temperature range, the compressor is controlled to operate at a second frequency;

[0018] When the temperature difference is within the third temperature range, the compressor is controlled to operate at the third frequency;

[0019] Wherein, the first frequency is the difference between the original frequency of the compressor and a first preset value; the second frequency is the difference between the original frequency and a second preset value; and the third frequency is the difference between the original frequency and a third preset value.

[0020] According to a control method for an air conditioner provided by the present invention, the step of controlling the opening degree of the electronic expansion valve in the air conditioner based on the temperature difference includes:

[0021] When the temperature difference is within the first temperature range, the electronic expansion valve is controlled to perform a first opening degree;

[0022] When the temperature difference is within the second temperature range, the electronic expansion valve is controlled to perform a second opening degree;

[0023] When the temperature difference is within the third temperature range, the electronic expansion valve is controlled to perform a third opening degree;

[0024] Wherein, the first opening degree is the difference between the original opening degree of the electronic expansion valve and the fourth preset value; the second opening degree is the difference between the original opening degree and the fifth preset value; and the third opening degree is the difference between the original opening degree and the sixth preset value.

[0025] According to a control method for an air conditioner provided by the present invention, the step of controlling the frequency of the compressor based on the temperature difference includes:

[0026] When the temperature difference is within the fourth temperature range, the compressor is controlled to execute at the fourth frequency;

[0027] When the temperature difference is within the fifth temperature range, the compressor is controlled to operate at the fifth frequency;

[0028] When the temperature difference is within the sixth temperature range, the compressor is controlled to operate at the sixth frequency;

[0029] Wherein, the fourth frequency is the difference between the compressor's original frequency and the seventh preset value; the fifth frequency is the difference between the original frequency and the eighth preset value; and the sixth frequency is the difference between the original frequency and the ninth preset value.

[0030] According to a control method for an air conditioner provided by the present invention, the step of controlling the opening degree of the electronic expansion valve based on the temperature difference includes:

[0031] When the temperature difference is within the fourth temperature range, the electronic expansion valve is controlled to perform a fourth opening degree;

[0032] When the temperature difference is within the fifth temperature range, the electronic expansion valve is controlled to perform a fifth opening degree;

[0033] When the temperature difference is within the sixth temperature range, the electronic expansion valve is controlled to perform a sixth opening degree;

[0034] Wherein, the fourth opening degree is the sum of the original opening degree of the electronic expansion valve and the tenth preset value; the fifth opening degree is the sum of the original opening degree and the eleventh preset value; and the sixth opening degree is the sum of the original opening degree and the twelfth preset value.

[0035] The present invention also provides a control device for an air conditioner, comprising:

[0036] The mode acquisition module is used to acquire the operating mode of the air conditioner when the compressor in the air conditioner is started.

[0037] The first control module is used to control the first electrically controlled three-way valve to execute the first passage and the second electrically controlled three-way valve to execute the second passage when the air conditioner is in the cooling mode, and to obtain the temperature difference between the indoor and outdoor ambient temperatures.

[0038] The second control module is used to control the frequency of the compressor and the opening degree of the electronic expansion valve in the air conditioner based on the temperature difference.

[0039] Wherein, the first passage is the passage between the first port and the third port of the first electrically controlled three-way valve; the second passage is the passage between the first port and the second port of the second electrically controlled three-way valve; the first port of the first electrically controlled three-way valve is connected to the first port of the compressor through the condenser, and the third port of the first electrically controlled three-way valve is connected to the third port of the solar heating device through the electronic expansion valve and the evaporator; the first port of the second electrically controlled three-way valve is connected to the second port of the compressor, and the second port of the second electrically controlled three-way valve is connected to the fourth port of the solar heating device; the solar heating device is used to heat the flowing refrigerant using solar energy.

[0040] The present invention also provides an air conditioner, comprising: an air conditioner body and an air conditioner control processor; the air conditioner control processor is connected to the air conditioner body; and further comprising a memory and a program or instructions stored in the memory and executable on the air conditioner control processor, wherein the program or instructions, when executed by the air conditioner control processor, perform the air conditioner control method as described in any of the preceding claims.

[0041] According to an air conditioner provided by the present invention, the air conditioner body includes: a compressor, a solar heating device, a first electrically controlled three-way valve, a second electrically controlled three-way valve, a condenser, and an evaporator;

[0042] The first port of the first electrically controlled three-way valve is connected to the first port of the compressor through the condenser, and the third port of the first electrically controlled three-way valve is connected to the third port of the solar heating device through the electronic expansion valve and the evaporator.

[0043] The first port of the second electrically controlled three-way valve is connected to the second port of the compressor, and the second port of the second electrically controlled three-way valve is connected to the fourth port of the solar heating device;

[0044] The solar heating device is used to heat the incoming refrigerant using solar energy.

[0045] An air conditioner according to the present invention includes: a second port of a first electrically controlled three-way valve connected to a first port of a solar heating device; and a third port of a second electrically controlled three-way valve connected to the second port of the solar heating device via an electronic expansion valve and an evaporator.

[0046] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the control method of any of the above-described air conditioners.

[0047] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the control method of the air conditioner as described above.

[0048] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the control method of any of the above-described air conditioners.

[0049] The present invention provides an air conditioner control method, device, and air conditioner. When the compressor in the air conditioner is started and the air conditioner is in cooling mode, the method controls a first electrically controlled three-way valve to select its first and third ports, and controls a second electrically controlled three-way valve to select its first and second ports. Based on the temperature difference between indoor and outdoor environments, the method controls the compressor frequency and the opening degree of the electronic expansion valve. A solar heating device is used to heat the incoming refrigerant using solar energy. The first port of the first electrically controlled three-way valve is connected to the first port of the compressor via a condenser. The third port of the first electrically controlled three-way valve... The port is connected to the third port of the solar heating device through the electronic expansion valve and the evaporator. The first port of the second electronically controlled three-way valve is connected to the second port of the compressor, and the second port of the second electronically controlled three-way valve is connected to the fourth port of the solar heating device. When the air conditioner is in cooling mode, it can directly heat the refrigerant by utilizing solar energy, and more flexibly control the compressor frequency and the opening of the electronic expansion valve based on the temperature difference between indoor and outdoor environments. This effectively supplements the heat exchange capacity of the air conditioner, improves the efficiency of the compressor, reduces energy loss during energy conversion, and effectively reduces the energy consumption of the air conditioner. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0051] Figure 1 This is one of the flowcharts illustrating the control method for an air conditioner provided by the present invention;

[0052] Figure 2 This is one of the structural schematic diagrams of the air conditioner in the air conditioner control method provided by the present invention;

[0053] Figure 3 This is a second schematic flowchart of the control method for the air conditioner provided by the present invention;

[0054] Figure 4 This is a schematic diagram of the structure of the control device for the air conditioner provided by the present invention;

[0055] Figure 5 This is the second schematic diagram of the structure of the air conditioner in the control method of the air conditioner provided by the present invention;

[0056] Figure 6 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0058] In the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0059] It should be noted that traditional air conditioners typically use mains electricity as their power source. Traditional air conditioners convert electrical energy into internal energy through a series of energy conversions to achieve cooling and heating functions. For example, traditional air conditioners can use electric heating devices to heat the refrigerant, thus preventing liquid slugging in the compressor. However, air conditioners are inherently high-energy-consuming household appliances, and energy loss is inevitable during the energy conversion process, further increasing energy consumption. With the transformation of the energy structure, how to reduce the energy consumption of air conditioners has become a hot research topic in this field.

[0060] To address this issue, the present invention provides a control method, device, and air conditioner for an air conditioner. Based on the control method provided by the present invention, the refrigerant can be directly heated using solar energy, leveraging its renewable and pollution-free characteristics. This effectively supplements the heat exchange capacity of the air conditioner, reducing energy loss during energy conversion. Furthermore, based on temperature differences, the frequency of the compressor and the opening degree of the electronic expansion valve in the air conditioner can be more flexibly controlled, thereby reducing the energy consumption of the air conditioner.

[0061] Figure 1 This is a flowchart illustrating the control method for an air conditioner provided by the present invention. The following is a summary of the process. Figure 1 The control method of the air conditioner of the present invention is described. For example... Figure 1 As shown, the method includes: step 101, obtaining the operating mode of the air conditioner when the compressor in the air conditioner is started.

[0062] It should be noted that the execution subject of this embodiment of the invention is the control device of an air conditioner.

[0063] Typically, users can control the air conditioner's compressor to start for cooling or heating, or to stop the air conditioner, according to their actual needs. User control of the air conditioner can be based on user-inputted control commands. For example, the controller in the air conditioner can receive a first control command from the user and, in response, start the compressor; or, the controller can receive a second control command from the user and, in response, stop the air conditioner.

[0064] It should be noted that user input can take the form of touch input on the target interface, including but not limited to click, swipe, and press input. User input can also be expressed as physical button input or voice input. The target interface can be the user terminal's display interface or the air conditioner's control interface. The physical buttons can be located on the air conditioner itself or on the air conditioner's external controller.

[0065] It is understood that the inputs listed above are merely exemplary examples, meaning that the embodiments of this application include, but are not limited to, the inputs listed above. In actual implementation, user input may include any other possible inputs, which can be specifically determined according to actual usage needs, and the embodiments of this application do not impose any limitations.

[0066] In this embodiment of the invention, when the compressor in the air conditioner is started, the operating mode of the air conditioner can be obtained in various ways. For example, the operating mode can be obtained by detecting the control commands received by the air conditioner's controller; or it can be obtained based on the operating status of the compressor in the air conditioner. The operating modes of the air conditioner include: cooling mode and heating mode.

[0067] Step 102: When the air conditioner is in cooling mode, control the first electrically controlled three-way valve to execute the first passage, control the second electrically controlled three-way valve to execute the second passage, and obtain the temperature difference between the indoor and outdoor ambient temperatures.

[0068] The solar heating device is used to heat the incoming refrigerant using solar energy; the first passage is the passage between the first port and the third port of the first electrically controlled three-way valve; the second passage is the passage between the first port and the second port of the second electrically controlled three-way valve; the first port of the first electrically controlled three-way valve is connected to the first port of the compressor through the condenser, and the third port of the first electrically controlled three-way valve is connected to the third port of the solar heating device through the electronic expansion valve and the evaporator; the first port of the second electrically controlled three-way valve is connected to the second port of the compressor, and the second port of the second electrically controlled three-way valve is connected to the fourth port of the solar heating device.

[0069] Figure 2 This is one of the structural schematic diagrams of the air conditioner in the air conditioner control method provided by the present invention, such as... Figure 2 As shown, the air conditioner 220 includes: a compressor 208, a first electrically controlled three-way valve 202, a second electrically controlled three-way valve 205, a solar heating device 201, an electronic expansion valve 209, a condenser 218, and an evaporator 219.

[0070] The electronic expansion valve 209 can be used to throttle the incoming refrigerant. The condenser 218 can be used to perform gas-liquid conversion on the incoming refrigerant. The evaporator 219 can be used to perform liquid-gas conversion on the incoming refrigerant.

[0071] It should be noted that the solar heating device 201 in this embodiment of the invention is always in the start-up state.

[0072] Optionally, the air conditioner 220 may also include a four-way valve 221.

[0073] The first electrically controlled three-way valve 202 includes three ports: the first port 203, the second port 214, and the third port 204.

[0074] The four-way valve 221 includes four ports: the first port 222, the second port 223, the third port 224, and the fourth port 225.

[0075] The condenser 218 includes two ports: a first port 226 and a second port 227.

[0076] Evaporator 219 includes two ports: a first port 228 and a second port 229.

[0077] The compressor’s first port 210 is connected to the four-way valve’s first port 222.

[0078] The second port 223 of the four-way valve is connected to the first port 226 of the condenser;

[0079] The second port 227 of the condenser is connected to the first port 203 of the first electrically controlled three-way valve;

[0080] The third port 204 of the first electrically controlled three-way valve is connected to the second port 217 of the solar heating device and one end of the electronic expansion valve 209, respectively.

[0081] The second port 214 of the first electrically controlled three-way valve is connected to the first port 216 of the solar heating device.

[0082] The other end of the electronic expansion valve 209 is connected to the first port 228 of the evaporator;

[0083] The second port 229 of the evaporator is connected to the third port 211 of the solar heating device and the third port 215 of the second electrically controlled three-way valve, respectively.

[0084] The first port 206 of the second electrically controlled three-way valve is connected to the third port 224 of the four-way valve.

[0085] The second port 207 of the second electrically controlled three-way valve is connected to the fourth port 213 of the solar heating device;

[0086] The third port 215 of the second electrically controlled three-way valve is also connected to the third port 211 of the solar heating device;

[0087] The fourth port 225 of the four-way valve is connected to the second port 212 of the compressor.

[0088] When the compressor 208 is started and the air conditioner 220 is in cooling mode, the first electrically controlled three-way valve 202 can be controlled to select the first port 203 and the third port 204 of the first electrically controlled three-way valve, so that the first electrically controlled three-way valve 202 performs the first passage, and the second electrically controlled three-way valve 205 can be controlled to select the first port 206 and the second port 207 of the second electrically controlled three-way valve, so that the second electrically controlled three-way valve 205 performs the second passage.

[0089] In this embodiment of the invention, control commands can be used to control the first electrically controlled three-way valve 202 to select the first port 203 and the third port 204 of the first electrically controlled three-way valve, so that the first electrically controlled three-way valve 202 performs a third passage, and control the second electrically controlled three-way valve 205 to select the first port 206 and the second port 207 of the second electrically controlled three-way valve, so that the second electrically controlled three-way valve 205 performs a fourth passage.

[0090] After the first electrically controlled three-way valve 202 executes the first passage and the second electrically controlled three-way valve 205 executes the second passage, the refrigerant flows out of the compressor 208 through the first port 210 of the compressor, and flows into the condenser 218 through the first port 222 of the four-way valve, the second port 223 of the four-way valve and the first port 226 of the condenser.

[0091] After the condenser 218 performs gas-liquid conversion on the incoming refrigerant, the refrigerant flows out of the condenser 218 through the second port 227 of the condenser, and flows into the evaporator 219 through the first port 203 of the first electrically controlled three-way valve, the third port 204 of the first electrically controlled three-way valve, the electronic expansion valve 209, and the first port 228 of the evaporator.

[0092] After the evaporator 219 performs liquid-gas conversion on the incoming refrigerant, the low-temperature and low-pressure refrigerant flows into the solar heating device 201 through the second port 229 of the evaporator and the third port 211 of the solar heating device.

[0093] The solar heating device 201 can use solar energy to heat the incoming refrigerant, thereby increasing the temperature of the low-temperature, low-pressure refrigerant flowing in through the evaporator 219, so that the saturated gas-liquid two-phase refrigerant can be transformed into a gaseous refrigerant by absorbing solar heat.

[0094] The aforementioned gaseous refrigerant can flow back to the compressor 208 via the fourth port 213 of the solar heating device, the second port 207 of the second electrically controlled three-way valve, the first port 206 of the second electrically controlled three-way valve, the third port 224 of the four-way valve, the fourth port 225 of the four-way valve, and the second port 212 of the compressor, thus completing the refrigerant circulation.

[0095] The refrigerant flows back to the compressor 208 through the above process, which can improve the efficiency of the compressor 208 and reduce the energy consumption of the air conditioner 220.

[0096] The solar heating device 201 uses solar energy to heat the low-temperature, low-pressure refrigerant flowing into the evaporator 219, which can effectively supplement the heat exchange capacity of the air conditioner, reduce energy loss during the energy conversion process, thereby reducing the energy consumption of the air conditioner, and also effectively prevent liquid refrigerant from liquid slugging into the compressor 208, thus protecting the compressor 208.

[0097] When the compressor 208 is started and the air conditioner 220 is in cooling mode, the indoor ambient temperature and outdoor ambient temperature can be obtained by using temperature sensors.

[0098] It should be noted that the indoor ambient temperature refers to the indoor ambient temperature controlled by the air conditioner 220; the outdoor ambient temperature refers to the outdoor ambient temperature within the aforementioned preset distance from the indoor temperature. The preset distance can be determined based on actual conditions; for example, the preset distance can be 10 meters. This embodiment of the invention does not specifically limit the preset distance.

[0099] After obtaining the indoor and outdoor ambient temperatures, the temperature difference between the indoor and outdoor environments can be calculated numerically.

[0100] It is understandable that indoor and outdoor ambient temperatures are dynamically changing. Accordingly, the temperature difference between indoor and outdoor environments is also dynamically changing.

[0101] Step 103: Based on the temperature difference, control the frequency of compressor 208 and the opening degree of electronic expansion valve 209 in air conditioner.

[0102] To further reduce the energy consumption of the air conditioner 220 in cooling mode, in this embodiment of the invention, when the compressor 208 is started and the air conditioner 220 is in cooling mode, the frequency of the compressor 208 and the opening degree of the electronic expansion valve 209 can be controlled based on the temperature difference between the indoor and outdoor ambient temperatures. This allows for more flexible control of the compressor 208 frequency to further reduce the energy consumption of the air conditioner 220, and more flexible control of the opening degree of the electronic expansion valve 209 to ensure that the air conditioner 220 reduces energy consumption while maintaining stable cooling performance.

[0103] Optionally, after obtaining the temperature difference, a condition judgment can be made based on the temperature difference, and the frequency of the compressor 208 and the opening degree of the electronic expansion valve 209 can be controlled based on the result of the condition judgment.

[0104] In this embodiment of the invention, the frequency of the compressor 208 and the opening degree of the electronic expansion valve 209 can be controlled by sending control commands to the controller of the air conditioner 220.

[0105] This invention, in an air conditioner operating in cooling mode, controls a first electrically controlled three-way valve to select its first and third ports, and a second electrically controlled three-way valve to select its first and second ports. Based on the temperature difference between indoor and outdoor environments, the compressor frequency and the opening of the electronic expansion valve are controlled. A solar heating device is used to heat the incoming refrigerant using solar energy. The first port of the first electrically controlled three-way valve is connected to the first port of the compressor via the condenser, and the third port of the first electrically controlled three-way valve is connected to the third port of the solar heating device via the electronic expansion valve and the evaporator. The first port of the second electrically controlled three-way valve is connected to the second port of the compressor, and the second port of the second electrically controlled three-way valve is connected to the fourth port of the solar heating device. This allows for direct heating of the refrigerant using solar energy and more flexible control of the compressor frequency and the opening of the electronic expansion valve based on the temperature difference between indoor and outdoor environments when the air conditioner is in cooling mode. This effectively supplements the air conditioner's heat exchange capacity, improves compressor efficiency, reduces energy loss during energy conversion, and effectively reduces the air conditioner's energy consumption.

[0106] Based on the above embodiments, after obtaining the operating mode of the air conditioner 220, the method further includes: when the operating mode of the air conditioner 220 is the heating mode, controlling the first electrically controlled three-way valve 202 to execute the third passage, controlling the second electrically controlled three-way valve 205 to execute the fourth passage, and obtaining the temperature difference.

[0107] The third passage is the passage between the first port 203 and the second port 214 of the first electrically controlled three-way valve; the fourth passage is the passage between the first port 206 and the third port 215 of the second electrically controlled three-way valve; the second port 214 of the first electrically controlled three-way valve is connected to the first port 216 of the solar heating device; the third port 215 of the second electrically controlled three-way valve is connected to the second port 217 of the solar heating device through the electronic expansion valve 209 and the evaporator 219.

[0108] Specifically, when the compressor 208 is started and the air conditioner 220 is in heating mode, the first electrically controlled three-way valve 202 can be controlled to select the first port 203 and the second port 214 of the first electrically controlled three-way valve, so that the first electrically controlled three-way valve 202 performs the third passage, and the second electrically controlled three-way valve 205 can be controlled to select the first port 206 and the third port 215 of the second electrically controlled three-way valve, so that the second electrically controlled three-way valve 205 performs the fourth passage.

[0109] In this embodiment of the invention, control commands can be used to control the first electrically controlled three-way valve 202 to select the first port 203 and the second port 214 of the first electrically controlled three-way valve, and to control the second electrically controlled three-way valve 205 to select the first port 206 and the third port 215 of the second electrically controlled three-way valve.

[0110] After the first electrically controlled three-way valve 202 selects the first port 203 and the second port 214 of the first electrically controlled three-way valve, and the second electrically controlled three-way valve 205 selects the first port 206 and the third port 215 of the second electrically controlled three-way valve, the refrigerant flows out of the compressor 208 through the second port 212 of the compressor, and flows into the evaporator 219 through the fourth port 225 of the four-way valve, the third port 224 of the four-way valve, and the second port 229 of the evaporator.

[0111] After the evaporator 219 performs liquid-gas conversion on the incoming refrigerant, the low-temperature and low-pressure refrigerant flows into the solar heating device 201 through the first port 228 of the evaporator, the electronic expansion valve 209, and the second port 217 of the solar heating device.

[0112] The solar heating device 201 can use solar energy to heat the incoming refrigerant, thereby increasing the temperature of the low-temperature, low-pressure refrigerant flowing in through the evaporator 219 and the electronic expansion valve 209. The saturated gas-liquid two-phase refrigerant can be transformed into a gaseous refrigerant by absorbing solar heat, and the temperature of the refrigerant can be increased.

[0113] The aforementioned gaseous refrigerant flows into the condenser 218 via the first port 216 of the solar heating device, the second port 214 of the first electrically controlled three-way valve, the first port 203 of the first electrically controlled three-way valve, and the second port 227 of the condenser.

[0114] The gaseous refrigerant flowing into the condenser 218 can undergo gas-liquid conversion. Since the solar heating device 201 can increase the temperature of the refrigerant when it passes through the solar heating device 201, the refrigerant with the increased temperature can improve the heat exchange efficiency of the condenser 218 after flowing into the condenser 218.

[0115] After the condenser 218 performs gas-liquid conversion on the incoming refrigerant, the refrigerant flows out of the condenser 218 through the first port 226 of the condenser, and flows back to the compressor 208 through the second port 223 of the four-way valve, the first port 222 of the four-way valve, and the first port 210 of the compressor, thus completing the circulation of the refrigerant.

[0116] The refrigerant flows back to the compressor 208 through the above process, which can improve the efficiency of the compressor 208 and reduce the energy consumption of the air conditioner 220.

[0117] The solar heating device 201 uses solar energy to heat the low-temperature, low-pressure refrigerant flowing into the condenser 218, which can effectively supplement the heat exchange capacity of the air conditioner, reduce energy loss during the energy conversion process, thereby reducing the energy consumption of the air conditioner, and also effectively prevent liquid refrigerant from liquid slugging into the compressor 208, thus protecting the compressor 208.

[0118] When the compressor 208 is started and the air conditioner 220 is in heating mode, the indoor ambient temperature and outdoor ambient temperature can be obtained by using temperature sensors.

[0119] After obtaining the indoor and outdoor ambient temperatures, the temperature difference between the indoor and outdoor environments can be calculated numerically.

[0120] Based on the temperature difference, the frequency of compressor 208 and the opening degree of electronic expansion valve 209 are controlled;

[0121] To further reduce the energy consumption of the air conditioner 220 in heating mode, in this embodiment of the invention, when the compressor 208 is started and the air conditioner 220 is in heating mode, the frequency of the compressor 208 and the opening degree of the electronic expansion valve 209 can be controlled based on the temperature difference between the indoor and outdoor ambient temperatures. This allows for more flexible control of the compressor 208 frequency to further reduce the energy consumption of the air conditioner 220, and more flexible control of the opening degree of the electronic expansion valve 209 to ensure that the air conditioner 220 reduces energy consumption while maintaining stable heating performance.

[0122] Optionally, after obtaining the temperature difference, a condition judgment can be made based on the temperature difference, and the frequency of the compressor 208 and the opening degree of the electronic expansion valve 209 can be controlled based on the result of the condition judgment.

[0123] In this embodiment of the invention, the frequency of the compressor 208 and the opening degree of the electronic expansion valve 209 can be controlled by sending control commands to the controller of the air conditioner 220.

[0124] It should be noted that when the air conditioner 220 is off, the first electrically controlled three-way valve can be controlled to execute the first passage, and the second electrically controlled three-way valve can be controlled to execute the fourth passage.

[0125] This invention, in an air conditioner operating in heating mode, controls a first electrically controlled three-way valve to select its first and second ports when the compressor is running, and controls a second electrically controlled three-way valve to select its first and third ports. Based on the temperature difference, the compressor frequency and the opening of the electronic expansion valve are controlled. The second port of the first electrically controlled three-way valve is connected to the first port of a solar heating device, and the third port of the second electrically controlled three-way valve is connected to the second port of the solar heating device via the electronic expansion valve and the evaporator. This allows for direct heating of the refrigerant using solar energy when the air conditioner is in heating mode, and more flexible control of the compressor frequency and the opening of the electronic expansion valve based on the temperature difference between indoor and outdoor environments. This effectively supplements the air conditioner's heat exchange capacity, improves compressor efficiency, reduces energy loss during energy conversion, and effectively reduces the air conditioner's energy consumption.

[0126] Based on the above embodiments, the frequency of compressor 208 is controlled based on the temperature difference, including: when the temperature difference is in a first temperature range, controlling compressor 208 to execute a first frequency;

[0127] When the temperature difference is in the second temperature range, the compressor 208 is controlled to execute the second frequency;

[0128] When the temperature difference is within the third temperature range, the compressor 208 is controlled to execute the third frequency;

[0129] The first frequency is the difference between the original frequency of the compressor 208 and the first preset value; the second frequency is the difference between the original frequency and the second preset value; and the third frequency is the difference between the original frequency and the third preset value.

[0130] Specifically, in this embodiment of the invention, based on prior knowledge, the mapping relationship between the temperature difference between the indoor and outdoor environments and the reduction in the frequency of the compressor 208 can be determined when the air conditioner is operating in cooling mode. The temperature difference is positively correlated with the reduction in the frequency of the compressor 208. In this embodiment of the invention, the temperature difference can be represented by ΔT.

[0131] It should be noted that the first temperature range, the second temperature range, the third temperature range, and the first preset value, the second preset value, and the third preset value in the embodiments of the present invention can be determined based on prior knowledge. There is a one-to-one correspondence between the temperature ranges and the preset values, that is, the first temperature range corresponds to the first preset value, the second temperature range corresponds to the second preset value, and the third temperature range corresponds to the third preset value.

[0132] It should be noted that the original frequency is the frequency executed when the compressor 208 starts. The original frequency of the compressor 208 can be determined based on the operating mode and set temperature of the air conditioner 220. The operating mode and set temperature of the air conditioner 220 can be determined based on control commands input by the user. In this embodiment of the invention, the aforementioned original frequency can be represented by f0.

[0133] Optionally, the first temperature range can be (-∞, 5), the second temperature range can be [5, 15), the third temperature range can be [15, +∞), the first preset value can be 1Hz, the second preset value can be 2Hz, and the third preset value can be 3Hz.

[0134] Accordingly, the first frequency f1 = f0 - 1; the second frequency f2 = f0 - 2; and the third frequency f3 = f0 - 3.

[0135] When the air conditioner is in cooling mode and ΔT∈(-∞,5), the compressor 208 can be controlled to execute the first frequency f1;

[0136] When the air conditioner is in cooling mode and ΔT∈[5,15), the compressor 208 can be controlled to execute the second frequency f2;

[0137] When the air conditioner is in cooling mode and ΔT∈[15,+∞), the compressor 208 can be controlled to execute the third frequency f3.

[0138] It is understood that the temperature difference ΔT between indoor and outdoor environments is dynamic. Based on the dynamic temperature difference ΔT in this embodiment of the invention, the frequency of the compressor 208 can be controlled more flexibly according to the actual situation, thereby reducing the energy consumption of the air conditioner 220 while ensuring that the air conditioner 220 has a stable cooling effect.

[0139] This invention, when the air conditioner is in cooling mode, controls the compressor to run at a first frequency if the temperature difference between the indoor and outdoor environments is in a first temperature range, controls the compressor to run at a second frequency if the temperature difference is in a second temperature range, and controls the compressor to run at a third frequency if the temperature difference is in a third temperature range. This allows for more flexible control of the compressor frequency based on actual conditions, and reduces the air conditioner's energy consumption while ensuring stable cooling performance.

[0140] Based on the above embodiments, the opening degree of the electronic expansion valve 209 in the air conditioner 220 is controlled based on the temperature difference, including: when the temperature difference is in the first temperature range, controlling the electronic expansion valve 209 to perform a first opening degree.

[0141] When the temperature difference is in the second temperature range, the electronic expansion valve 209 is controlled to perform the second opening degree;

[0142] When the temperature difference is within the third temperature range, the electronic expansion valve 209 is controlled to perform the third opening degree;

[0143] The first opening is the difference between the original opening of the electronic expansion valve 209 and the fourth preset value; the second opening is the difference between the original opening and the fifth preset value; and the third opening is the difference between the original opening and the sixth preset value.

[0144] Specifically, in this embodiment of the invention, based on prior knowledge, the mapping relationship between the temperature difference between the indoor and outdoor environments and the reduction in the opening degree of the electronic expansion valve 209 can be determined when the air conditioner is operating in cooling mode. The temperature difference is positively correlated with the reduction in the opening degree of the electronic expansion valve 209.

[0145] It should be noted that the fourth, fifth, and sixth preset values ​​in the embodiments of the present invention can be determined based on prior knowledge. There is a one-to-one correspondence between the temperature ranges and the preset values, that is, the first temperature range corresponds to the fourth preset value, the second temperature range corresponds to the fifth preset value, and the third temperature range corresponds to the sixth preset value.

[0146] It should be noted that the initial opening degree is the opening degree executed by the electronic expansion valve 209 when the compressor 208 starts. The initial opening degree of the electronic expansion valve 209 can be determined based on the operating mode and set temperature of the air conditioner 220. The operating mode and set temperature of the air conditioner 220 can be determined based on control commands input by the user. In this embodiment of the invention, the aforementioned initial opening degree can be represented by V0.

[0147] Optionally, the fourth preset value can be 10% of the original opening, the fifth preset value can be 15% of the original opening, and the sixth preset value can be 20% of the original opening.

[0148] Accordingly, the first opening V1 = V0 - 10%V0; the second opening V2 = V0 - 15%V0; the third opening V3 = V0 - 20%V0;

[0149] When the air conditioner is in cooling mode and ΔT∈(-∞,5℃), the electronic expansion valve 209 can be controlled to perform the first opening V1;

[0150] When the air conditioner is in cooling mode and ΔT∈[5℃,15℃), the electronic expansion valve 209 can be controlled to perform the second opening V2.

[0151] When the air conditioner is in cooling mode and ΔT∈[15℃,+∞), the electronic expansion valve 209 can be controlled to perform the third opening degree V3.

[0152] It is understood that the temperature difference ΔT between indoor and outdoor environments is dynamic. Based on the dynamic temperature difference ΔT in this embodiment of the invention, the opening degree of the electronic expansion valve 209 can be controlled more flexibly according to the actual situation, thereby reducing the energy consumption of the air conditioner 220 while ensuring that the air conditioner 220 has a stable cooling effect.

[0153] In this embodiment of the invention, when the air conditioner is in cooling mode, if the temperature difference between the indoor and outdoor environments is in a first temperature range, the electronic expansion valve is controlled to perform a first opening degree; if the temperature difference is in a second temperature range, the electronic expansion valve is controlled to perform a second opening degree; and if the temperature difference is in a third temperature range, the electronic expansion valve is controlled to perform a third opening degree. This allows for more flexible control of the opening degree of the electronic expansion valve according to actual conditions, and can reduce the energy consumption of the air conditioner while ensuring stable cooling performance.

[0154] Based on the above embodiments, the frequency of compressor 208 is controlled based on the temperature difference, including: when the temperature difference is in the fourth temperature range, controlling compressor 208 to execute the fourth frequency;

[0155] When the temperature difference is within the fifth temperature range, the compressor 208 is controlled to execute the fifth frequency;

[0156] When the temperature difference is within the sixth temperature range, the compressor 208 is controlled to execute the sixth frequency;

[0157] Among them, the fourth frequency is the difference between the original frequency of compressor 208 and the seventh preset value; the fifth frequency is the difference between the original frequency and the eighth preset value; and the sixth frequency is the difference between the original frequency and the ninth preset value.

[0158] Specifically, in this embodiment of the invention, based on prior knowledge, the mapping relationship between the temperature difference between the indoor and outdoor environments and the reduction in the frequency of the compressor 208 can be determined when the air conditioner is operating in heating mode. The temperature difference is positively correlated with the reduction in the frequency of the compressor 208. In this embodiment of the invention, the temperature difference can be represented by ΔT.

[0159] It should be noted that the fourth, fifth, and sixth temperature ranges, as well as the seventh, eighth, and ninth preset values ​​in the embodiments of the present invention, can be determined based on prior knowledge. There is a one-to-one correspondence between the temperature ranges and the preset values, that is, the fourth temperature range corresponds to the seventh preset value, the fifth temperature range corresponds to the eighth preset value, and the sixth temperature range corresponds to the ninth preset value.

[0160] Optionally, the fourth temperature range can be (-∞, 5℃), the fifth temperature range can be [5℃, 15℃), the sixth temperature range can be [15℃, +∞), the seventh preset value can be 1Hz, the second and eighth preset values ​​can be 2Hz, and the ninth preset value can be 3Hz.

[0161] Correspondingly, the fourth frequency f4 = f0 - 1; the fifth frequency f5 = f0 - 2; and the sixth frequency f6 = f0 - 3.

[0162] When the air conditioner is in heating mode and ΔT∈(-∞,5℃), the compressor 208 can be controlled to execute the fourth frequency f4;

[0163] When the air conditioner is in heating mode and ΔT∈[5℃,15℃), the compressor 208 can be controlled to execute the fifth frequency f5;

[0164] When the air conditioner is in heating mode and ΔT∈[15℃,+∞), the compressor 208 can be controlled to execute the sixth frequency f6.

[0165] It is understood that the temperature difference ΔT between indoor and outdoor environments is dynamic. Based on the dynamic temperature difference ΔT in this embodiment of the invention, the frequency of the compressor 208 can be controlled more flexibly according to the actual situation, thereby reducing the energy consumption of the air conditioner 220 while ensuring that the heating effect of the air conditioner 220 is stable.

[0166] This invention, when the air conditioner is in heating mode, controls the compressor to run at a fourth frequency if the temperature difference between the indoor and outdoor environments is in a fourth temperature range, a fifth frequency if the temperature difference is in a fifth temperature range, and a sixth frequency if the temperature difference is in a sixth temperature range. This allows for more flexible control of the compressor frequency based on actual conditions, reducing the air conditioner's energy consumption while ensuring stable heating performance.

[0167] Based on the above embodiments, the opening degree of the electronic expansion valve 209 is controlled based on the temperature difference, including: when the temperature difference is in the fourth temperature range, the electronic expansion valve 209 is controlled to perform a fourth opening degree.

[0168] When the temperature difference is within the fifth temperature range, the electronic expansion valve 209 is controlled to perform the fifth opening degree;

[0169] When the temperature difference is within the sixth temperature range, the electronic expansion valve 209 is controlled to perform the sixth opening degree;

[0170] Among them, the fourth opening degree is the sum of the original opening degree of the electronic expansion valve 209 and the tenth preset value; the fifth opening degree is the sum of the original opening degree and the eleventh preset value; and the sixth opening degree is the sum of the original opening degree and the twelfth preset value.

[0171] Specifically, in this embodiment of the invention, based on prior knowledge, the mapping relationship between the temperature difference between the indoor and outdoor environments and the increase in the opening degree of the electronic expansion valve 209 can be determined when the air conditioner is operating in heating mode. The temperature difference is positively correlated with the increase in the opening degree of the electronic expansion valve 209. In this embodiment of the invention, the temperature difference can be represented by ΔT.

[0172] It should be noted that the tenth, eleventh, and twelfth preset values ​​in the embodiments of the present invention can be determined based on prior knowledge. There is a one-to-one correspondence between the temperature ranges and the preset values, that is, the fourth temperature range corresponds to the tenth preset value, the fifth temperature range corresponds to the eleventh preset value, and the sixth temperature range corresponds to the twelfth preset value.

[0173] Optionally, the tenth preset value can be 10% of the original opening, the eleventh preset value can be 15% of the original opening, and the twelfth preset value can be 20% of the original opening.

[0174] Accordingly, the fourth opening V4 = V0 + 10%V0; the fifth opening V5 = V0 + 15%V0; the sixth opening V6 = V0 + 20%V0;

[0175] When the air conditioner is in heating mode and ΔT∈(-∞,5℃), the electronic expansion valve 209 can be controlled to perform the fourth opening degree V4=;

[0176] When the air conditioner is in heating mode and ΔT∈[5℃,15℃), the electronic expansion valve 209 can be controlled to perform the fifth opening degree V5.

[0177] When the air conditioner is in heating mode and ΔT∈[15℃,+∞), the electronic expansion valve 209 can be controlled to perform the sixth opening degree V6.

[0178] It is understood that the temperature difference ΔT between indoor and outdoor environments is dynamic. Based on the dynamic temperature difference ΔT in this embodiment of the invention, the opening degree of the electronic expansion valve 209 can be controlled more flexibly according to the actual situation, thereby reducing the energy consumption of the air conditioner 220 while ensuring that the heating effect of the air conditioner 220 is stable.

[0179] This invention, when the air conditioner is in heating mode, controls the electronic expansion valve to open to the fourth degree if the temperature difference between the indoor and outdoor environments is in the fourth temperature range, the fifth degree if the temperature difference is in the fifth temperature range, and the sixth degree if the temperature difference is in the sixth temperature range. This allows for more flexible control of the opening of the electronic expansion valve based on actual conditions, thereby reducing the energy consumption of the air conditioner while ensuring stable heating performance.

[0180] Figure 4 This is a structural schematic diagram of the control device for the air conditioner provided by the present invention. The following is in conjunction with… Figure 4 The control device for an air conditioner provided by this invention will be described below. The control device described below can be referred to in correspondence with the control method for an air conditioner provided by this invention described above. For example... Figure 4 As shown, the device includes: a pattern acquisition module 401, a first control module 402, and a second control module 403.

[0181] The mode acquisition module 401 is used to acquire the operating mode of the air conditioner when the compressor in the air conditioner is started.

[0182] The first control module 402 is used to control the first electrically controlled three-way valve to execute the first passage and the second electrically controlled three-way valve to execute the second passage when the air conditioner is in the cooling mode, and to obtain the temperature difference between the indoor and outdoor ambient temperatures.

[0183] The second control module 403 is used to control the frequency of the compressor and the opening degree of the electronic expansion valve in the air conditioner based on the temperature difference.

[0184] The solar heating device is used to heat the incoming refrigerant using solar energy; the first passage is the passage between the first port and the third port of the first electrically controlled three-way valve; the second passage is the passage between the first port and the second port of the second electrically controlled three-way valve; the first port of the first electrically controlled three-way valve is connected to the first port of the compressor through the condenser, and the third port of the first electrically controlled three-way valve is connected to the third port of the solar heating device through the electronic expansion valve and the evaporator; the first port of the second electrically controlled three-way valve is connected to the second port of the compressor, and the second port of the second electrically controlled three-way valve is connected to the fourth port of the solar heating device.

[0185] Specifically, the pattern acquisition module 401, the first control module 402, and the second control module 403 are electrically connected.

[0186] Optionally, the control unit of the air conditioner may also include a third control module.

[0187] The third control module can be used to control the first electrically controlled three-way valve to execute the third passage and the second electrically controlled three-way valve to execute the fourth passage when the air conditioner is in heating mode, and to obtain the temperature difference; based on the temperature difference, it controls the compressor frequency and the opening degree of the electronic expansion valve; wherein, the third passage is the passage between the first port and the second port of the first electrically controlled three-way valve; the fourth passage is the passage between the first port and the third port of the second electrically controlled three-way valve; the second port of the first electrically controlled three-way valve is connected to the first port of the solar heating device; the third port of the second electrically controlled three-way valve is connected to the second port of the solar heating device through the electronic expansion valve and the evaporator.

[0188] Optionally, the first control module 402 can be specifically used to control the compressor to execute a first frequency when the temperature difference is in a first temperature range; to control the compressor to execute a second frequency when the temperature difference is in a second temperature range; and to control the compressor to execute a third frequency when the temperature difference is in a third temperature range; wherein the first frequency is the difference between the compressor's original frequency and a first preset value; the second frequency is the difference between the original frequency and a second preset value; and the third frequency is the difference between the original frequency and a third preset value.

[0189] Optionally, the second control module 403 can be specifically used to control the electronic expansion valve to perform a first opening degree when the temperature difference is in the first temperature range; to control the electronic expansion valve to perform a second opening degree when the temperature difference is in the second temperature range; and to control the electronic expansion valve to perform a third opening degree when the temperature difference is in the third temperature range; wherein the first opening degree is the difference between the original opening degree of the electronic expansion valve and a fourth preset value; the second opening degree is the difference between the original opening degree and a fifth preset value; and the third opening degree is the difference between the original opening degree and a sixth preset value.

[0190] Optionally, the third control module can be specifically used to control the compressor to execute a fourth frequency when the temperature difference is in a fourth temperature range; to control the compressor to execute a fifth frequency when the temperature difference is in a fifth temperature range; and to control the compressor to execute a sixth frequency when the temperature difference is in a sixth temperature range. Wherein, the fourth frequency is the difference between the compressor's original frequency and a seventh preset value; the fifth frequency is the difference between the original frequency and an eighth preset value; and the sixth frequency is the difference between the original frequency and a ninth preset value.

[0191] The third control module can also be specifically used to control the electronic expansion valve to perform a fourth opening degree when the temperature difference is in the fourth temperature range; to control the electronic expansion valve to perform a fifth opening degree when the temperature difference is in the fifth temperature range; and to control the electronic expansion valve to perform a sixth opening degree when the temperature difference is in the sixth temperature range. The fourth opening degree is the sum of the original opening degree of the electronic expansion valve and the tenth preset value; the fifth opening degree is the sum of the original opening degree and the eleventh preset value; and the sixth opening degree is the sum of the original opening degree and the twelfth preset value.

[0192] The control device for the air conditioner in this embodiment of the invention controls a first electrically controlled three-way valve to select its first and third ports when the compressor is started and the air conditioner is in cooling mode. It also controls a second electrically controlled three-way valve to select its first and second ports. Based on the temperature difference between indoor and outdoor environments, it controls the compressor frequency and the opening degree of the electronic expansion valve. A solar heating device is used to heat the incoming refrigerant using solar energy. The first port of the first electrically controlled three-way valve is connected to the first port of the compressor via a condenser, and the third port of the first electrically controlled three-way valve... By connecting the electronic expansion valve and evaporator to the third port of the solar heating device, the first port of the second electronically controlled three-way valve to the second port of the compressor, and the second port of the second electronically controlled three-way valve to the fourth port of the solar heating device, the air conditioner can directly heat the refrigerant using solar energy when the air conditioner is in cooling mode. It can also more flexibly control the compressor frequency and the opening of the electronic expansion valve based on the temperature difference between indoor and outdoor environments. This effectively supplements the heat exchange capacity of the air conditioner, improves the efficiency of the compressor, reduces energy loss during energy conversion, and effectively reduces the energy consumption of the air conditioner.

[0193] Based on the above embodiments, an air conditioner includes: an air conditioner body and an air conditioner control processor; the air conditioner control processor is connected to the air conditioner body; it also includes a memory and a program or instructions stored in the memory and executable on the air conditioner control processor, wherein when the program or instructions are executed by the air conditioner control processor, the air conditioner control method as described above is performed.

[0194] Figure 5 This is the second schematic diagram of the air conditioner structure in the air conditioner control method provided by the present invention. (See diagram below.) Figure 5 As shown, the air conditioner body 501, the air conditioner control processor 502, and the memory 503 are electrically connected.

[0195] It should be noted that the air conditioner body 501 is equivalent to the air conditioner in the above embodiments. For the specific structure of the air conditioner body 501, please refer to... Figure 2 The specific structure of the central air conditioner 220.

[0196] The air conditioner's control processor 502 can control the air conditioner body 501 to achieve the technical effect of directly heating the refrigerant using solar energy and more flexibly controlling the compressor frequency and the opening degree of the electronic expansion valve based on the temperature difference between indoor and outdoor environments, thereby reducing the air conditioner's energy consumption.

[0197] The control process of the air conditioner's control processor over the air conditioner body can be found in any of the above embodiments, and will not be repeated in this embodiment.

[0198] The air conditioner in this embodiment of the invention includes an air conditioner body and an air conditioner control device. The control device, when the compressor in the air conditioner body is started and the air conditioner body is in cooling mode, controls a first electrically controlled three-way valve to select its first and third ports, and controls a second electrically controlled three-way valve to select its first and second ports. Based on the temperature difference between indoor and outdoor environments, it controls the compressor frequency and the opening degree of the electronic expansion valve. A solar heating device is used to heat the incoming refrigerant using solar energy. The first port of the first electrically controlled three-way valve is connected to the first port of the compressor via a condenser. The third port of the three-way control valve is connected to the third port of the solar heating device through the electronic expansion valve and the evaporator. The first port of the second electronically controlled three-way valve is connected to the second port of the compressor, and the second port of the second electronically controlled three-way valve is connected to the fourth port of the solar heating device. When the air conditioner is in cooling mode, it can directly heat the refrigerant by utilizing solar energy, and more flexibly control the compressor frequency and the opening of the electronic expansion valve based on the temperature difference between indoor and outdoor environments. This effectively supplements the heat exchange capacity of the air conditioner, improves the efficiency of the compressor, reduces energy loss during energy conversion, and effectively reduces the energy consumption of the air conditioner.

[0199] Based on the above embodiments, the air conditioner body includes: a compressor, an electronic expansion valve, a solar heating device, a first electrically controlled three-way valve, a second electrically controlled three-way valve, a condenser, and an evaporator.

[0200] The first port of the first electrically controlled three-way valve is connected to the first port of the compressor through the condenser, and the third port of the first electrically controlled three-way valve is connected to the third port of the solar heating device through the electronic expansion valve and the evaporator.

[0201] The first port of the second electrically controlled three-way valve is connected to the second port of the compressor, and the second port of the second electrically controlled three-way valve is connected to the fourth port of the solar heating device.

[0202] Solar heating devices are used to heat incoming refrigerant using solar energy.

[0203] The air conditioner body in the embodiments of the present invention is as follows Figure 2 As shown, the specific structure of the air conditioner body and the connection relationship of each component in the air conditioner body can be found in the above embodiments, and will not be repeated in the embodiments of the present invention.

[0204] The air conditioner in this embodiment of the invention can rely on the renewable and pollution-free characteristics of solar energy to directly heat the refrigerant. When the air conditioner is running in cooling mode, it can effectively supplement the heat exchange capacity of the air conditioner, improve the efficiency of the compressor, reduce energy loss during energy conversion, and reduce the energy consumption of the air conditioner.

[0205] Based on the above embodiments, the following are included: the second port of the first electrically controlled three-way valve is connected to the first port of the solar heating device; the third port of the second electrically controlled three-way valve is connected to the second port of the solar heating device through an electronic expansion valve and an evaporator.

[0206] The air conditioner in this embodiment of the invention can rely on the renewable and pollution-free characteristics of solar energy to directly heat the refrigerant. When the air conditioner is operating in heating mode, it can effectively supplement the heat exchange capacity of the air conditioner, improve the efficiency of the compressor, reduce energy loss during energy conversion, and reduce the energy consumption of the air conditioner.

[0207] Figure 6 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 6 As shown, the electronic device may include: a processor 610, a communication interface 620, a memory 630, and a communication bus 640, wherein the processor 610, the communication interface 620, and the memory 630 communicate with each other through the communication bus 640. The processor 610 can call logic instructions in the memory 630 to execute a control method for the air conditioner. This method includes: when the compressor in the air conditioner is started, obtaining the operating mode of the air conditioner; when the air conditioner's operating mode is cooling mode, controlling a first electrically controlled three-way valve to execute a first passage, controlling a second electrically controlled three-way valve to execute a second passage, and obtaining the temperature difference between the indoor and outdoor ambient temperatures; based on the temperature difference, controlling the compressor frequency and the opening degree of the electronic expansion valve in the air conditioner; wherein, the first passage is the passage between the first port and the third port of the first electrically controlled three-way valve; the second passage is the passage between the first port and the second port of the second electrically controlled three-way valve; the first port of the first electrically controlled three-way valve is connected to the first port of the compressor via a condenser, and the third port of the first electrically controlled three-way valve is connected to the third port of a solar heating device via an electronic expansion valve and an evaporator; the first port of the second electrically controlled three-way valve is connected to the second port of the compressor, and the second port of the second electrically controlled three-way valve is connected to the fourth port of the solar heating device; the solar heating device is used to heat the incoming refrigerant using solar energy.

[0208] Furthermore, the logical instructions in the aforementioned memory 630 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0209] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the air conditioner control method provided by the above methods. The method includes: when the compressor in the air conditioner is started, obtaining the operating mode of the air conditioner; when the operating mode of the air conditioner is cooling mode, controlling a first electrically controlled three-way valve to execute a first passage, controlling a second electrically controlled three-way valve to execute a second passage, and obtaining the temperature difference between the indoor and outdoor ambient temperatures; based on the temperature difference, adjusting the compressor frequency and the opening degree of the electronic expansion valve in the air conditioner. The system includes a control circuit; wherein, the first passage is the passage between the first port and the third port of the first electrically controlled three-way valve; the second passage is the passage between the first port and the second port of the second electrically controlled three-way valve; the first port of the first electrically controlled three-way valve is connected to the first port of the compressor via the condenser, and the third port of the first electrically controlled three-way valve is connected to the third port of the solar heating device via the electronic expansion valve and the evaporator; the first port of the second electrically controlled three-way valve is connected to the second port of the compressor, and the second port of the second electrically controlled three-way valve is connected to the fourth port of the solar heating device; the solar heating device is used to heat the flowing refrigerant using solar energy.

[0210] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the control method for an air conditioner provided by the methods described above. The method includes: when the compressor in the air conditioner is started, obtaining the operating mode of the air conditioner; when the operating mode of the air conditioner is cooling mode, controlling a first electrically controlled three-way valve to execute a first passage, controlling a second electrically controlled three-way valve to execute a second passage, and obtaining the temperature difference between the indoor and outdoor ambient temperatures; based on the temperature difference, controlling the frequency of the compressor and the opening degree of the electronic expansion valve in the air conditioner; wherein, the first passage is a first... The passage is between the first port of the electrically controlled three-way valve and the third port of the first electrically controlled three-way valve; the second passage is between the first port of the second electrically controlled three-way valve and the second port of the second electrically controlled three-way valve; the first port of the first electrically controlled three-way valve is connected to the first port of the compressor through the condenser, and the third port of the first electrically controlled three-way valve is connected to the third port of the solar heating device through the electronic expansion valve and the evaporator; the first port of the second electrically controlled three-way valve is connected to the second port of the compressor, and the second port of the second electrically controlled three-way valve is connected to the fourth port of the solar heating device; the solar heating device is used to heat the flowing refrigerant using solar energy.

[0211] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0212] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0213] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method of an air conditioner, characterized by, The method comprises the following steps: In the case of starting the compressor in the air conditioner, the running mode of the air conditioner is acquired; In the case that the running mode of the air conditioner is the cooling mode, the first electrically controlled three-way valve is controlled to execute the first passage, the second electrically controlled three-way valve is controlled to execute the second passage, and the temperature difference between the indoor and outdoor environment temperatures is acquired; Based on the temperature difference, the frequency of the compressor and the opening degree of the electronic expansion valve in the air conditioner are controlled; Wherein, the first passage is the passage between the first port of the first electrically controlled three-way valve and the third port of the first electrically controlled three-way valve; the second passage is the passage between the first port of the second electrically controlled three-way valve and the second port of the second electrically controlled three-way valve; the first port of the first electrically controlled three-way valve is connected with the first port of the compressor through the condenser; the third port of the first electrically controlled three-way valve is connected with the third port of the solar heating device through the electronic expansion valve and the evaporator; the first port of the second electrically controlled three-way valve is connected with the second port of the compressor; the second port of the second electrically controlled three-way valve is connected with the fourth port of the solar heating device; the solar heating device is used for heating the flowing refrigerant by using solar energy; the condenser is used for gas-liquid conversion of the flowing refrigerant after the refrigerant flowing out of the compressor flows into the condenser; the refrigerant flowing out of the condenser flows into the evaporator through the first passage and the electronic expansion valve; the evaporator is used for liquid-gas conversion of the flowing refrigerant; the refrigerant flowing out of the evaporator flows into the solar heating device, and the refrigerant flowing out of the solar heating device flows into the compressor through the second passage; After acquiring the running mode of the air conditioner, the method further comprises the following steps: In the case that the running mode of the air conditioner is the heating mode, the first electrically controlled three-way valve is controlled to execute the third passage, the second electrically controlled three-way valve is controlled to execute the fourth passage, and the temperature difference is acquired; Based on the temperature difference, the frequency of the compressor and the opening degree of the electronic expansion valve are controlled; Wherein, the third passage is the passage between the first port of the first electrically controlled three-way valve and the second port of the first electrically controlled three-way valve; the fourth passage is the passage between the first port of the second electrically controlled three-way valve and the third port of the second electrically controlled three-way valve; the second port of the first electrically controlled three-way valve is connected with the first port of the solar heating device; the third port of the second electrically controlled three-way valve is connected with the second port of the solar heating device through the electronic expansion valve and the evaporator; After the refrigerant flowing out of the compressor flows into the evaporator through the fourth passage, the refrigerant flowing out of the evaporator flows into the solar heating device through the electronic expansion valve, the solar heating device is used for heating the flowing refrigerant by using solar energy, and the refrigerant flowing out of the solar heating device flows into the condenser and the compressor in sequence through the third passage.

2. The control method of the air conditioner according to claim 1, characterized by, The method further comprises the following steps: In the case that the temperature difference is in the first temperature interval, the first frequency is controlled for the compressor. control the compressor to execute a second frequency in a case that the temperature difference is in a second temperature interval; control the compressor to execute a third frequency in a case that the temperature difference is in a third temperature interval; wherein the first frequency is a difference between an original frequency of the compressor and a first preset value; the second frequency is a difference between the original frequency and a second preset value; and the third frequency is a difference between the original frequency and a third preset value.

3. The control method of the air conditioner according to claim 2, characterized by, the control of the opening degree of the electronic expansion valve in the air conditioner based on the temperature difference comprises: control the electronic expansion valve to execute a first opening degree in a case that the temperature difference is in the first temperature interval; control the electronic expansion valve to execute a second opening degree in a case that the temperature difference is in the second temperature interval; control the electronic expansion valve to execute a third opening degree in a case that the temperature difference is in the third temperature interval; wherein the first opening degree is a difference between an original opening degree of the electronic expansion valve and a fourth preset value; the second opening degree is a difference between the original opening degree and a fifth preset value; and the third opening degree is a difference between the original opening degree and a sixth preset value.

4. The control method of the air conditioner according to claim 1, characterized by, the control of the frequency of the compressor based on the temperature difference comprises: control the compressor to execute a fourth frequency in a case that the temperature difference is in a fourth temperature interval; control the compressor to execute a fifth frequency in a case that the temperature difference is in a fifth temperature interval; control the compressor to execute a sixth frequency in a case that the temperature difference is in a sixth temperature interval; wherein the fourth frequency is a difference between an original frequency of the compressor and a seventh preset value; the fifth frequency is a difference between the original frequency and an eighth preset value; and the sixth frequency is a difference between the original frequency and a ninth preset value.

5. The control method of the air conditioner according to claim 4, characterized by, the control of the opening degree of the electronic expansion valve based on the temperature difference comprises: control the electronic expansion valve to execute a fourth opening degree in a case that the temperature difference is in the fourth temperature interval; control the electronic expansion valve to execute a fifth opening degree in a case that the temperature difference is in the fifth temperature interval; control the electronic expansion valve to execute a sixth opening degree in a case that the temperature difference is in the sixth temperature interval; wherein the fourth opening degree is a sum of an original opening degree of the electronic expansion valve and a tenth preset value; the fifth opening degree is a sum of the original opening degree and an eleventh preset value; and the sixth opening degree is a sum of the original opening degree and a twelfth preset value.

6. A control device for an air conditioner, characterized by comprising: comprise: a mode acquisition module, configured to acquire a running mode of an air conditioner in a case that a compressor in the air conditioner starts; a first control module, configured to control a first electrically-controlled three-way valve to execute a first passage, control a second electrically-controlled three-way valve to execute a second passage, and acquire a temperature difference of indoor and outdoor environment temperatures in a case that the running mode of the air conditioner is a refrigeration mode; a second control module, configured to control a frequency of the compressor and an opening degree of an electronic expansion valve in the air conditioner based on the temperature difference; The first passage is a passage between the first port of the first electrically-controlled three-way valve and the third port of the first electrically-controlled three-way valve; the second passage is a passage between the first port of the second electrically-controlled three-way valve and the second port of the second electrically-controlled three-way valve; the first port of the first electrically-controlled three-way valve is connected with the first port of the compressor through the condenser; the third port of the first electrically-controlled three-way valve is connected with the third port of the solar heating device through the electronic expansion valve and the evaporator; the first port of the second electrically-controlled three-way valve is connected with the second port of the compressor; the second port of the second electrically-controlled three-way valve is connected with the fourth port of the solar heating device; the solar heating device is used for heating the flowing refrigerant by using solar energy; the refrigerant flowing out of the compressor flows into the condenser, and the condenser is used for gas-liquid conversion of the flowing refrigerant; the refrigerant flowing out of the condenser flows into the evaporator through the first passage and the electronic expansion valve; the evaporator is used for liquid-gas conversion of the flowing refrigerant; the refrigerant flowing out of the evaporator flows into the solar heating device, and the refrigerant flowing out of the solar heating device flows into the compressor through the second passage. After the operation mode of the air conditioner is acquired, the method further comprises: in the case that the operation mode of the air conditioner is the heating mode, controlling the first electrically-controlled three-way valve to execute a third passage, controlling the second electrically-controlled three-way valve to execute a fourth passage, and acquiring the temperature difference; controlling the frequency of the compressor and the opening degree of the electronic expansion valve based on the temperature difference; The third passage is a passage between the first port of the first electrically-controlled three-way valve and the second port of the first electrically-controlled three-way valve; the fourth passage is a passage between the first port of the second electrically-controlled three-way valve and the third port of the second electrically-controlled three-way valve; the second port of the first electrically-controlled three-way valve is connected with the first port of the solar heating device; the third port of the second electrically-controlled three-way valve is connected with the second port of the solar heating device through the electronic expansion valve and the evaporator; After the refrigerant flowing out of the compressor flows into the evaporator through the fourth passage, the refrigerant flowing out of the evaporator flows into the solar heating device through the electronic expansion valve; the solar heating device is used for heating the flowing refrigerant by using solar energy; and the refrigerant flowing out of the solar heating device flows into the condenser and the compressor in sequence through the third passage.

7. An air conditioner characterized by comprising: comprises: an air conditioner body and an air conditioner control processor; the air conditioner control processor is connected with the air conditioner body; further comprising a memory and a program or instruction stored on the memory and executable on the air conditioner control processor, the program or instruction being executed by the air conditioner control processor to execute the air conditioner control method of any one of claims 1 to 5.

8. The air conditioner of claim 7, wherein the air conditioner body comprises: a compressor, a solar heating device, a first electrically-controlled three-way valve, a second electrically-controlled three-way valve, a condenser and an evaporator; The first port of the first electrically-controlled three-way valve is connected with the first port of the compressor through a condenser, and the third port of the first electrically-controlled three-way valve is connected with the third port of the solar heating device through the electronic expansion valve and the evaporator; The first port of the second electrically-controlled three-way valve is connected with the second port of the compressor, and the second port of the second electrically-controlled three-way valve is connected with the fourth port of the solar heating device; The solar heating device is used for heating the inflowing refrigerant by using solar energy.

9. The air conditioner of claim 8, wherein The first electrically-controlled three-way valve comprises: The second port of the first electrically-controlled three-way valve is connected with the first port of the solar heating device, and the third port of the second electrically-controlled three-way valve is connected with the second port of the solar heating device through the electronic expansion valve and the evaporator.

10. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the program to implement the control method of the air conditioner according to any one of claims 1 to 5.

11. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the control method of the air conditioner according to any one of claims 1 to 5.

12. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the control method of the air conditioner according to any one of claims 1 to 5.

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