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

Abstract

The invention discloses an air conditioner control method and device, an air conditioner, a storage medium and a computer program product. The air conditioner comprises a photovoltaic photothermal radiation refrigeration part and an access control part. The access control part is used for switching access positions of the photovoltaic photothermal radiation refrigeration part, and the access positions comprise a first position, a second position and a third position; the first position is located between the indoor heat exchanger and the compressor air inlet; the second position is located between the outdoor heat exchanger and the indoor heat exchanger; the third position is located between the indoor heat exchanger and the compressor exhaust port; the photovoltaic photo-thermal radiation refrigeration part can evaporate or condense a refrigerant flowing through the photovoltaic photo-thermal radiation refrigeration part; the method comprises the steps that the access control component is controlled to switch the access position of the photovoltaic photothermal radiation refrigeration component according to the air conditioner operation mode and the day and night periodic working condition. According to the scheme, by adjusting the access position of the photovoltaic photothermal radiation refrigeration component, the photovoltaic photothermal radiation refrigeration component enables the refrigerant to evaporate or condense, so that the power consumption of the compressor is reduced, and the energy efficiency of the air conditioner is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and particularly relates to a control method, device, air conditioner, storage medium and computer program product of an air conditioner, and more particularly to a control method, device, air conditioner, storage medium and computer program product of an air conditioner integrating solar photovoltaic-thermal radiation refrigeration. Background Art

[0002] The thermodynamic cycle efficiency of traditional air conditioners is limited by the Carnot cycle theoretical limit. Especially in high-temperature environments, the power consumption of compressors increases significantly, resulting in a decline in the overall energy efficiency of the system and there is a problem of energy efficiency bottleneck. At the same time, the subcooling degree of the refrigerant at the outlet of the condenser in traditional air conditioners is insufficient, resulting in low sensible heat recovery efficiency, and a large amount of low-grade heat energy is not effectively utilized, causing energy waste.

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

[0004] The purpose of the present invention is to provide a control method, device, air conditioner, storage medium and computer program product of an air conditioner, so as to solve the problems of energy efficiency bottleneck and energy waste existing in traditional air conditioners in related solutions, and achieve the effect of reducing the power consumption of the compressor and improving the energy efficiency of the air conditioner by adjusting the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and day-night periodic working conditions of the air conditioner, and the photovoltaic-thermal radiation refrigeration component evaporates or condenses the refrigerant.

[0005] The present invention provides a control method of an air conditioner. The air conditioner includes a photovoltaic-thermal radiation refrigeration component, an indoor heat exchanger, an outdoor heat exchanger, a compressor, and an access control component; the access control component is used to switch the access position of the photovoltaic-thermal radiation refrigeration component; the access positions of the photovoltaic-thermal radiation refrigeration component include a first position, a second position, and a third position; the first position is between the indoor heat exchanger and the intake port of the compressor; the second position is between the outdoor heat exchanger and the indoor heat exchanger; the third position is between the indoor heat exchanger and the exhaust port of the compressor; during the day, the photovoltaic-thermal radiation refrigeration component can evaporate and heat up the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component; during the night, the photovoltaic-thermal radiation refrigeration component can condense and cool down the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component; the method includes: during the operation of the air conditioner, obtaining the operating mode and day-night periodic working conditions of the air conditioner; the day-night periodic working conditions include day and night; controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and the day-night periodic working conditions.

[0006] In some embodiments, controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and the day-night periodic operating condition includes: when the operating mode of the air conditioner is the refrigeration mode, determining whether the day-night periodic operating condition is daytime; if the day-night periodic operating condition is daytime, controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component so that the photovoltaic-thermal radiation refrigeration component is in the first position.

[0007] In some embodiments, controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and the day-night periodic operating condition further includes: when the operating mode of the air conditioner is the refrigeration mode, determining whether the day-night periodic operating condition is nighttime; if the day-night periodic operating condition is nighttime, controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component so that the photovoltaic-thermal radiation refrigeration component is in the second position.

[0008] In some embodiments, controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and the day-night periodic operating condition further includes: when the operating mode of the air conditioner is the heating mode, determining whether the day-night periodic operating condition is daytime; if the day-night periodic operating condition is daytime, controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component so that the photovoltaic-thermal radiation refrigeration component is in the third position.

[0009] In some embodiments, the access control component includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, and a sixth solenoid valve; the second solenoid valve is arranged between the indoor heat exchanger and the intake port of the compressor; the third solenoid valve is arranged between the indoor heat exchanger and the outdoor heat exchanger; the photovoltaic-thermal radiation refrigeration component is connected in parallel with the second solenoid valve, and both ends of the photovoltaic-thermal radiation refrigeration component are respectively connected to both ends of the second solenoid valve through the first solenoid valve and the fourth solenoid valve; the photovoltaic-thermal radiation refrigeration component is also connected in parallel with the third solenoid valve, and both ends of the photovoltaic-thermal radiation refrigeration component are respectively connected to both ends of the third solenoid valve through the fifth solenoid valve and the sixth solenoid valve; when the photovoltaic-thermal radiation refrigeration component is in the first position or the third position, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are in the open state, and the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve are in the closed state; when the photovoltaic-thermal radiation refrigeration component is in the second position, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are in the closed state, and the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve are in the open state.

[0010] Matching the above method, on the other hand, the present invention provides a control device for an air conditioner, the air conditioner including a photovoltaic-thermal radiation refrigeration component, an indoor heat exchanger, an outdoor heat exchanger, a compressor, and an access control component; the access control component is used to switch the access position of the photovoltaic-thermal radiation refrigeration component; the access positions of the photovoltaic-thermal radiation refrigeration component include a first position, a second position, and a third position; the first position is between the indoor heat exchanger and the intake port of the compressor; the second position is between the outdoor heat exchanger and the indoor heat exchanger; the third position is between the indoor heat exchanger and the exhaust port of the compressor; during the day, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to evaporate and heat up; during the night, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to condense and cool down; the control device includes: an acquisition unit configured to acquire the operating mode and the day-night periodic working condition of the air conditioner during the operation of the air conditioner; the day-night periodic working condition includes day and night; a control unit configured to control the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and the day-night periodic working condition.

[0011] In some embodiments, the control unit controls the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and the day-night periodic working condition, including: when the operating mode of the air conditioner is the refrigeration mode, determining whether the day-night periodic working condition is day; if the day-night periodic working condition is day, controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component so that the photovoltaic-thermal radiation refrigeration component is in the first position.

[0012] In some embodiments, the control unit controls the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and the day-night periodic working condition, further including: when the operating mode of the air conditioner is the refrigeration mode, determining whether the day-night periodic working condition is night; if the day-night periodic working condition is night, controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component so that the photovoltaic-thermal radiation refrigeration component is in the second position.

[0013] In some embodiments, the control unit controls the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operation mode and the day-night periodic working condition, and further includes: when the operation mode of the air conditioner is the heating mode, determining whether the day-night periodic working condition is daytime; if the day-night periodic working condition is daytime, controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component so that the photovoltaic-thermal radiation refrigeration component is in the third position.

[0014] In some embodiments, the access control component includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, and a sixth solenoid valve; the second solenoid valve is disposed between the indoor heat exchanger and the intake port of the compressor; the third solenoid valve is disposed between the indoor heat exchanger and the outdoor heat exchanger; the photovoltaic-thermal radiation refrigeration component is connected in parallel with the second solenoid valve, and both ends of the photovoltaic-thermal radiation refrigeration component are respectively connected to both ends of the second solenoid valve through the first solenoid valve and the fourth solenoid valve; the photovoltaic-thermal radiation refrigeration component is also connected in parallel with the third solenoid valve, and both ends of the photovoltaic-thermal radiation refrigeration component are respectively connected to both ends of the third solenoid valve through the fifth solenoid valve and the sixth solenoid valve; when the photovoltaic-thermal radiation refrigeration component is in the first position or the third position, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are in the open state, and the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve are in the closed state; when the photovoltaic-thermal radiation refrigeration component is in the second position, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are in the closed state, and the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve are in the open state.

[0015] Matched with the above device, on the other hand, the present invention provides an air conditioner, including: the control device of the air conditioner described above.

[0016] Matched with the above method, on the other hand, the present invention provides a storage medium, the storage medium includes a stored program, wherein when the program runs, it controls the device where the storage medium is located to execute the control method of the air conditioner described above.

[0017] Matched with the above method, on the other hand, the present invention provides a computer program product, the computer program product includes a computer program, and when the computer program product is processed and executed, it realizes the steps of the control method of the air conditioner described above.

[0018] For the solution of the present invention, the air conditioner includes a photovoltaic-thermal radiation refrigeration component, an indoor heat exchanger, an outdoor heat exchanger, a compressor, and an access control component; the access control component is used to switch the access position of the photovoltaic-thermal radiation refrigeration component; the access positions of the photovoltaic-thermal radiation refrigeration component include a first position, a second position, and a third position; the first position is between the indoor heat exchanger and the intake port of the compressor; the second position is between the outdoor heat exchanger and the indoor heat exchanger; the third position is between the indoor heat exchanger and the exhaust port of the compressor; during the day, the photovoltaic-thermal radiation refrigeration component can evaporate and heat up the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component; at night, the photovoltaic-thermal radiation refrigeration component can condense and cool down the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component; during the operation of the air conditioner, the access control component is controlled to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the air conditioner operation mode and the day-night periodic working conditions. By adjusting the access position of the photovoltaic-thermal radiation refrigeration component according to the operation mode of the air conditioner and the day-night periodic working conditions, the photovoltaic-thermal radiation refrigeration component evaporates or condenses the refrigerant, thereby reducing the compressor power consumption and improving the energy efficiency of the air conditioner.

[0019] Other features and advantages of the present invention will be described in the following description, and in part will be obvious from the description, or will be understood by implementing the present invention.

[0020] The technical solution of the present invention will be further described in detail below through the drawings and embodiments. Description of the Drawings

[0021] Figure 1 It is a schematic flowchart of an embodiment of the control method of the air conditioner of the present invention;

[0022] Figure 2 It is a schematic structural diagram of an embodiment of the control device of the air conditioner of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the air conditioner system of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the photovoltaic-thermal radiation refrigeration component of the present invention;

[0025] Figure 5 It is a schematic flowchart of the control method of the air conditioner integrated with solar photovoltaic-thermal radiation refrigeration of the present invention.

[0026] Combined with the drawings, the reference numerals in the embodiments of the present invention are as follows:

[0027] 1 - First solenoid valve; 2 - Second solenoid valve; 3 - Third solenoid valve; 4 - Fourth solenoid valve; 5 - Fifth solenoid valve; 6 - Sixth solenoid valve; 7 - Electronic expansion valve; 8 - Indoor heat exchanger; 9 - Outdoor heat exchanger; 10 - Compressor; 11 - Photovoltaic and solar thermal radiation refrigeration component; 12 - Glass cover plate; 13 - Air interlayer; 14 - Photovoltaic cell; 15 - Heat absorption plate; 16 - Radiation refrigeration material film; 17 - Thermal insulation material; 18 - Refrigerant heat exchange flow channel; 102 - Acquisition unit; 104 - Control unit. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0029] In recent years, the global energy situation has become increasingly severe, and the energy consumption structure urgently needs to be optimized. According to the statistical data of the International Energy Agency, building energy consumption accounts for more than 30% of the global total energy consumption, and the energy consumption of heating and cooling systems accounts for as high as 50%-60%. Traditional air-conditioning systems have problems such as energy efficiency bottlenecks, energy waste, and large environmental loads. Therefore, improving the energy utilization efficiency of air-conditioning systems has become a key technical path to alleviate the energy crisis and achieve the goal of carbon neutrality.

[0030] Therefore, the present invention provides an air-conditioning control method integrating solar photovoltaic and solar thermal-radiation refrigeration. By preheating the refrigerant gas at the inlet of the compressor through a photovoltaic and solar thermal panel, the compression ratio and power consumption of the compressor are reduced, thereby significantly improving the thermodynamic efficiency of the system. In the night mode, the cold generated by radiation refrigeration is used to secondarily condense the refrigerant, further increasing the subcooling degree of the refrigerant, reducing the working load of the compressor, and improving the refrigeration efficiency of the system. In addition, the refrigerant flows through the photovoltaic and solar thermal panel for forced convection heat exchange, which can also stabilize the component temperature and improve the photovoltaic power generation efficiency.

[0031] According to an embodiment of the present invention, there is provided a control method for an air conditioner, where the air conditioner includes a photovoltaic and solar thermal radiation refrigeration component, an indoor heat exchanger, an outdoor heat exchanger, a compressor, and an access control component. The access control component is used to switch the access position of the photovoltaic and solar thermal radiation refrigeration component; the access positions of the photovoltaic and solar thermal radiation refrigeration component include a first position, a second position, and a third position; the first position is located between the indoor heat exchanger and the intake port of the compressor; the second position is located between the outdoor heat exchanger and the indoor heat exchanger; the third position is located between the indoor heat exchanger and the exhaust port of the compressor.

[0032] In some embodiments, the access control component includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, and a sixth solenoid valve. The second solenoid valve is disposed between the indoor heat exchanger and the intake port of the compressor; the third solenoid valve is disposed between the indoor heat exchanger and the outdoor heat exchanger; the photovoltaic-thermal radiation refrigeration component is connected in parallel with the second solenoid valve, and both ends of the photovoltaic-thermal radiation refrigeration component are respectively connected to both ends of the second solenoid valve through the first solenoid valve and the fourth solenoid valve; the photovoltaic-thermal radiation refrigeration component is also connected in parallel with the third solenoid valve, and both ends of the photovoltaic-thermal radiation refrigeration component are respectively connected to both ends of the third solenoid valve through the fifth solenoid valve and the sixth solenoid valve; when the photovoltaic-thermal radiation refrigeration component is in the first position or the third position, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are in an open state, and the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve are in a closed state; when the photovoltaic-thermal radiation refrigeration component is in the second position, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are in a closed state, and the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve are in an open state.

[0033] The system structure of this air conditioner is as Figure 3 shown. The air conditioner includes: a compressor 10, a four-way reversing valve (not shown in the figure), an indoor heat exchanger 8, an electronic expansion valve 7, and an outdoor heat exchanger 9. By controlling the conduction direction of the four-way reversing valve, the air conditioner can operate in a refrigeration mode or a heating mode. In the refrigeration mode, after the refrigerant is discharged from the exhaust port of the compressor 10, it sequentially passes through the outdoor heat exchanger 9, the electronic expansion valve 7, and the indoor heat exchanger 7 and then returns to the compressor 10. In the heating mode, after the refrigerant is discharged from the exhaust port of the compressor 10, it sequentially passes through the indoor heat exchanger 8, the electronic expansion valve 7, and the outdoor heat exchanger 9 and then returns to the compressor 10.

[0034] The air conditioner further includes a photovoltaic-thermal radiation refrigeration component 11, and the connection position of the photovoltaic-thermal radiation refrigeration component 11 in the air-conditioning system is determined according to the operating mode of the air conditioner and the day-night periodic working conditions. The connection control component is used to switch the connection position of the photovoltaic-thermal radiation refrigeration component 11, and the connection control component includes a first solenoid valve 1, a second solenoid valve 2, a third solenoid valve 3, a fourth solenoid valve 4, a fifth solenoid valve 5, and a sixth solenoid valve 6. The second solenoid valve 2 is arranged between the indoor heat exchanger 8 and the intake port of the compressor 10; the third solenoid valve 3 is arranged between the indoor heat exchanger 8 and the outdoor heat exchanger 9, specifically, it is arranged between the outdoor heat exchanger 9 and the electronic expansion valve 7. When the photovoltaic-thermal radiation refrigeration component 11 is not connected to the air conditioner, the second solenoid valve 2 and the third solenoid valve 3 are in the open state, so that the refrigerant forms a loop, and the air conditioner can cool and heat normally. When it is necessary to connect the photovoltaic-thermal radiation refrigeration component 11, the second solenoid valve 2 and the third solenoid valve 3 are opened or closed according to the connection position of the photovoltaic-thermal radiation refrigeration component 11.

[0035] When the photovoltaic-thermal radiation refrigeration component 11 is connected between the indoor heat exchanger 8 and the intake port of the compressor 10, that is, the photovoltaic-thermal radiation refrigeration component 11 is in the first position, at this time, the photovoltaic-thermal radiation refrigeration component 11 is connected in parallel at both ends of the second solenoid valve 2, and both ends of the photovoltaic-thermal radiation refrigeration component 11 are respectively connected to both ends of the second solenoid valve 2 through the first solenoid valve 1 and the fourth solenoid valve 4. At this time, closing the second solenoid valve 2, opening the first solenoid valve 1 and the fourth solenoid valve 4 can make the refrigerant flowing out of the indoor heat exchanger 8 in the refrigeration mode flow through the first solenoid valve 1, the photovoltaic-thermal radiation refrigeration component 11, and the fourth solenoid valve 4 in sequence and then flow into the compressor 10.

[0036] When the photovoltaic-thermal radiation refrigeration component 11 is connected between the outdoor heat exchanger 9 and the indoor heat exchanger 8, that is, the photovoltaic-thermal radiation refrigeration component 11 is in the second position, at this time, the photovoltaic-thermal radiation refrigeration component 11 is connected in parallel at both ends of the third solenoid valve 3, and both ends of the photovoltaic-thermal radiation refrigeration component 11 are respectively connected to both ends of the third solenoid valve 3 through the fifth solenoid valve 5 and the sixth solenoid valve 6. At this time, closing the third solenoid valve 3, opening the fifth solenoid valve 5 and the sixth solenoid valve 6 can make the refrigerant flowing out of the outdoor heat exchanger 9 in the refrigeration mode flow through the fifth solenoid valve 5, the photovoltaic-thermal radiation refrigeration component 11, and the sixth solenoid valve ⑥ in sequence and then flow into the indoor heat exchanger 8.

[0037] When the photovoltaic-thermal radiation refrigeration component 11 is connected between the indoor heat exchanger 8 and the exhaust port of the compressor 10, that is, when the photovoltaic-thermal radiation refrigeration component 11 is in the third position, at this time, the photovoltaic-thermal radiation refrigeration component 11 is connected in parallel at both ends of the second solenoid valve 2, and both ends of the photovoltaic-thermal radiation refrigeration component 11 are respectively connected to both ends of the second solenoid valve 2 through the first solenoid valve 1 and the fourth solenoid valve 4. At this time, closing the second solenoid valve 2 and opening the first solenoid valve 1 and the fourth solenoid valve 4 can enable the refrigerant discharged from the compressor 10 in the heating mode to flow through the fourth solenoid valve 4, the photovoltaic-thermal radiation refrigeration component 11, and the first solenoid valve 1 in sequence and then flow into the indoor heat exchanger 8.

[0038] During the day, the photovoltaic-thermal radiation refrigeration component can evaporate and heat up the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component; at night, the photovoltaic-thermal radiation refrigeration component can condense and cool down the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component.

[0039] The structure of the photovoltaic-thermal radiation refrigeration component is as Figure 4 shown. The photovoltaic-thermal radiation refrigeration component includes a glass cover plate 12, an air interlayer 13, a photovoltaic cell 14, a heat absorption plate 15, a radiation refrigeration material coating 16, a thermal insulation material 17, and a refrigerant heat exchange flow channel 18. During the day, the refrigerant gas flows into the heat exchange flow channel and exchanges heat with the heat absorption plate to increase the temperature of the refrigerant. At night, the photovoltaic-thermal plate coated with the radiation refrigeration material conducts radiation heat exchange with the outer space close to absolute zero through the atmospheric window, thereby obtaining cold energy and cooling down the refrigerant in the heat exchange flow channel.

[0040] Photovoltaic-thermal devices and radiation refrigeration equipment are usually designed separately, resulting in insufficient utilization of roof space. The present invention integrates photovoltaic-thermal technology and radiation refrigeration technology into a single composite device, improving the utilization rate of roof space and reducing the floor area of the equipment. At the same time, a three-stage energy conversion chain of "photovoltaic power generation - heat energy recovery - radiation refrigeration" is constructed to achieve cascaded utilization and efficient coordination of energy.

[0041] As Figure 1 shown is a schematic flow chart of an embodiment of the method of the present invention. The control method of this air conditioner may include: step S110 and step S120.

[0042] At step S110, during the operation of the air conditioner, obtain the operation mode and the day-night periodic working condition of the air conditioner; the day-night periodic working condition includes day and night.

[0043] When determining that the current day-night periodic working condition is day or night, it can be determined according to the magnitude of the collected value of the solar radiation sensor. For example, when the radiation is less than 50 W / m 2It can be determined as night; a temperature sensor can also be equipped to make a judgment based on the temperature of the heat absorption plate of the photovoltaic-thermal radiation refrigeration component; or a judgment can be made according to the current time and sunrise / sunset time.

[0044] Judging whether it is day or night currently is to switch the functional mode of the photovoltaic-thermal radiation refrigeration composite device according to the environmental characteristics in different periods, so as to achieve efficient energy utilization and system energy efficiency optimization.

[0045] When there is sufficient sunlight during the day, the photovoltaic-thermal panel can generate electricity and collect heat by absorbing solar energy. At this time, the system switches to the day cooling or heating mode, preheating the refrigerant by using the photovoltaic-thermal panel, and at the same time reducing the temperature of the photovoltaic module through refrigerant convection, avoiding the decline of power generation efficiency caused by high temperature, and achieving multiple benefits of power generation, heat energy recovery and temperature control.

[0046] At night, there is no sunlight but radiation refrigeration is suitable. The environmental temperature decreases and the radiation characteristics of the atmospheric window allow heat to diverge into space. The system switches to the night cooling mode, directly dissipating heat into space by using the radiation refrigeration material on the surface of the composite device, performing secondary condensation on the refrigerant at the outlet of the condenser, increasing the subcooling degree, thereby reducing the compressor load and improving the refrigeration efficiency.

[0047] At step S120, according to the operating mode and the day-night periodic working condition, control the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component.

[0048] In this solution, by adjusting the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode of the air conditioner and the day-night periodic working condition, in the day cooling mode, the composite device uses the photovoltaic-thermal panel to generate electricity, collect heat and preheat the refrigerant gas at the inlet of the compressor, which can reduce the compressor power consumption, lower the temperature of the photovoltaic module and improve the power generation efficiency; in the night cooling mode, the radiation refrigeration cooling capacity is used to perform secondary condensation on the refrigerant, which can increase the refrigerant subcooling degree and refrigeration energy efficiency; in the day heating mode, the composite device preheats the refrigerant at the outlet of the compressor, raising the air outlet temperature of the indoor heat exchanger and improving the air conditioner energy efficiency.

[0049] In some embodiments, in step S120, the specific process of controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and the day-night periodic working condition includes: when the operating mode of the air conditioner is the cooling mode, judging whether the day-night periodic working condition is day; if the day-night periodic working condition is day, then control the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component, so that the photovoltaic-thermal radiation refrigeration component is in the first position to preheat the refrigerant gas flowing into the intake port of the compressor.

[0050] During daytime cooling, the photovoltaic thermal radiation cooling component is connected between the indoor heat exchanger and the compressor air inlet. The refrigerant flowing out of the indoor heat exchanger passes through the photovoltaic thermal radiation cooling component and reaches the compressor air inlet. The photovoltaic thermal radiation cooling component uses photovoltaic thermal panels to generate electricity and collect heat, and preheats the refrigerant gas at the compressor air inlet, increasing the compressor's air inlet temperature, thereby reducing the compressor's power consumption and lowering the photovoltaic module temperature, thereby improving the photovoltaic module's power generation efficiency. Figure 3 As shown, at this time, the first solenoid valve 1, the third solenoid valve 3, and the fourth solenoid valve 4 are in the open state, and the second solenoid valve 2, the fifth solenoid valve 5, and the sixth solenoid valve 6 are in the closed state. The circulation direction of the refrigerant is: compressor 10, outdoor heat exchanger 9, electronic expansion valve 7, indoor heat exchanger 8, first solenoid valve 1, photovoltaic thermal radiation refrigeration component 11, fourth solenoid valve 4, compressor 10.

[0051] The photovoltaic thermal panels preheat the refrigerant gas at the compressor inlet, reducing the compressor's pressure ratio, thereby reducing power consumption and improving the system's thermodynamic efficiency. When the refrigerant flows through the photovoltaic thermal panels, forced convection removes waste heat, preventing the components from experiencing power generation efficiency degradation due to high temperatures.

[0052] In some embodiments, in step S120, the specific process of controlling the access control component to switch the access position of the photovoltaic thermal radiation refrigeration component according to the operating mode and the day and night periodic working condition also includes: when the operating mode of the air conditioner is the cooling mode, judging whether the day and night periodic working condition is night; if the day and night periodic working condition is night, controlling the access control component to switch the access position of the photovoltaic thermal radiation refrigeration component so that the photovoltaic thermal radiation refrigeration component is in the second position to perform secondary condensation on the refrigerant flowing out of the condenser.

[0053] When the air conditioner is cooling at night, the photovoltaic thermal radiation cooling component is connected between the outdoor heat exchanger and the indoor heat exchanger. The refrigerant flowing out of the outdoor heat exchanger passes through the photovoltaic thermal radiation cooling component and is then sent to the indoor heat exchanger. The photovoltaic thermal radiation cooling component uses the cooling energy generated by radiation cooling to perform secondary condensation on the refrigerant flowing through it, thereby increasing the refrigerant's supercooling degree and improving the cooling energy efficiency. Figure 3 As shown, at this time, the first solenoid valve 1, the third solenoid valve 3, and the fourth solenoid valve 4 are in the closed state, and the second solenoid valve 2, the fifth solenoid valve 5, and the sixth solenoid valve 6 are in the open state. The circulation direction of the refrigerant is: compressor 10, outdoor heat exchanger 9, fifth solenoid valve 5, photovoltaic thermal radiation refrigeration component 11, sixth solenoid valve 6, electronic expansion valve 7, indoor heat exchanger 8, second solenoid valve 2, compressor 10.

[0054] The cold generated by radiative cooling is used to secondarily condense the refrigerant at the outlet of the condenser, increasing the subcooling degree of the refrigerant, reducing the working load of the compressor, and improving the refrigeration efficiency of the system. By virtue of the infrared radiation characteristics of the atmospheric window, heat is directly radiated into outer space in the form of electromagnetic waves without additional energy input, which is energy-saving and environmentally friendly.

[0055] In some embodiments, in step S120, the specific process of controlling the access control component to switch the access position of the photovoltaic-thermal radiative cooling component according to the operating mode and the day-night periodic working condition further includes: when the operating mode of the air conditioner is the heating mode, determining whether the day-night periodic working condition is daytime; if the day-night periodic working condition is daytime, controlling the access control component to switch the access position of the photovoltaic-thermal radiative cooling component so that the photovoltaic-thermal radiative cooling component is in the third position to preheat the refrigerant discharged from the compressor and increase the outlet air temperature of the indoor heat exchanger.

[0056] When the air conditioner is heating during the day, the photovoltaic-thermal radiative cooling component is connected between the indoor heat exchanger and the compressor exhaust port, and the refrigerant discharged from the compressor is sent to the indoor heat exchanger after passing through the photovoltaic-thermal radiative cooling component. The photovoltaic-thermal radiative cooling component uses the photovoltaic-thermal panel to generate electricity and collect heat, and raises the temperature of the refrigerant gas discharged from the compressor, thereby increasing the outlet air temperature indoors and improving the energy efficiency of the air conditioner. As Figure 3 shown, at this time, the first solenoid valve 1, the third solenoid valve 3, and the fourth solenoid valve 4 are in the open state, the second solenoid valve 2, the fifth solenoid valve 5, and the sixth solenoid valve 6 are in the closed state, and the refrigerant circulation flow direction is: compressor 10, fourth solenoid valve 4, photovoltaic-thermal radiative cooling component 11, first solenoid valve 1, indoor heat exchanger 8, electronic expansion valve 7, third solenoid valve 3, outdoor heat exchanger 9, compressor 10.

[0057] When the air conditioner is heating at night, the photovoltaic-thermal radiative cooling component is not connected to the refrigerant circuit, and the air conditioner operates in the normal mode, and the refrigerant does not flow through the photovoltaic-thermal radiative cooling component.

[0058] When the air conditioner switches the operating mode, the compressor stops temporarily, and the internal fan continues to supply air without stopping. At this time, the opening and closing operations of the solenoid valves for the next mode are performed, which can avoid pressure shocks, and the compressor is restarted after the opening and closing of the solenoid valves are completed.

[0059] The refrigerant at the outlet of the compressor is preheated through the composite device, directly increasing the outlet air temperature of the indoor heat exchanger, improving the heating effect, and enhancing the comfort on the user side. At the same time, the refrigerant circulation path is optimized to reduce energy loss, making the heating process more efficient and reducing the overall energy consumption.

[0060] Figure 5 is a schematic flow chart of the control method of the air conditioner integrated with solar photovoltaic-thermal radiative cooling according to the present invention. AsFigure 5 As shown, the method includes:

[0061] Step 1: After the air conditioner is turned on, determine whether the current mode is daytime cooling mode, daytime heating mode, or nighttime cooling mode. If the current mode is daytime cooling mode or daytime heating mode, proceed to step 2; if the current mode is nighttime cooling mode, proceed to step 3.

[0062] Step 2: Open the first solenoid valve, the third solenoid valve, and the fourth solenoid valve 4, and close the second solenoid valve 2, the fifth solenoid valve 5, and the sixth solenoid valve 6.

[0063] Step 3: Open the second solenoid valve 2, the fifth solenoid valve 5, and the sixth solenoid valve 6, and close the second solenoid valve 2, the fifth solenoid valve 5, and the sixth solenoid valve 6.

[0064] The technical solution of this embodiment includes a photovoltaic thermal radiation cooling component, an indoor heat exchanger, an outdoor heat exchanger, a compressor, and an access control component. The access control component is used to switch the access position of the photovoltaic thermal radiation cooling component. The access positions of the photovoltaic thermal radiation cooling component include a first position, a second position, and a third position. The first position is located between the indoor heat exchanger and the air inlet of the compressor; the second position is located between the outdoor heat exchanger and the indoor heat exchanger; and the third position is located between the indoor heat exchanger and the exhaust port of the compressor. During the day, the photovoltaic thermal radiation cooling component can evaporate and heat the refrigerant flowing through the photovoltaic thermal radiation cooling component; at night, the photovoltaic thermal radiation cooling component can condense and cool the refrigerant flowing through the photovoltaic thermal radiation cooling component. During the operation of the air conditioner, the access control component is controlled to switch the access position of the photovoltaic thermal radiation cooling component according to the air conditioner operating mode and the diurnal cycle. By adjusting the access position of the photovoltaic thermal radiation cooling component according to the air conditioner operating mode and the diurnal cycle, the photovoltaic thermal radiation cooling component causes the refrigerant to evaporate or condense, thereby reducing the power consumption of the compressor and improving the energy efficiency of the air conditioner.

[0065] According to an embodiment of the present invention, a control device for an air conditioner corresponding to the control method for an air conditioner is also provided. The air conditioner includes a photovoltaic thermal radiation cooling component, an indoor heat exchanger, an outdoor heat exchanger, a compressor, and an access control component. The access control component is configured to switch the access position of the photovoltaic thermal radiation cooling component. The access positions of the photovoltaic thermal radiation cooling component include a first position, a second position, and a third position. The first position is located between the indoor heat exchanger and the air inlet of the compressor; the second position is located between the outdoor heat exchanger and the indoor heat exchanger; and the third position is located between the indoor heat exchanger and the exhaust port of the compressor.

[0066] In some embodiments, the access control component includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, and a sixth solenoid valve. The second solenoid valve is disposed between the indoor heat exchanger and the intake port of the compressor; the third solenoid valve is disposed between the indoor heat exchanger and the outdoor heat exchanger; the photovoltaic-thermal radiation refrigeration component is connected in parallel with the second solenoid valve, and both ends of the photovoltaic-thermal radiation refrigeration component are respectively connected to both ends of the second solenoid valve through the first solenoid valve and the fourth solenoid valve; the photovoltaic-thermal radiation refrigeration component is also connected in parallel with the third solenoid valve, and both ends of the photovoltaic-thermal radiation refrigeration component are respectively connected to both ends of the third solenoid valve through the fifth solenoid valve and the sixth solenoid valve; when the photovoltaic-thermal radiation refrigeration component is in the first position or the third position, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are in the open state, and the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve are in the closed state; when the photovoltaic-thermal radiation refrigeration component is in the second position, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are in the closed state, and the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve are in the open state.

[0067] The system structure of this air conditioner is as Figure 3 shown. The air conditioner includes: a compressor 10, a four-way reversing valve (not shown in the figure), an indoor heat exchanger 8, an electronic expansion valve 7, and an outdoor heat exchanger 9. By controlling the conduction direction of the four-way reversing valve, the air conditioner can operate in a refrigeration mode or a heating mode. In the refrigeration mode, after the refrigerant is discharged from the exhaust port of the compressor 10, it sequentially passes through the outdoor heat exchanger 9, the electronic expansion valve 7, and the indoor heat exchanger 7 and then returns to the compressor 10. In the heating mode, after the refrigerant is discharged from the exhaust port of the compressor 10, it sequentially passes through the indoor heat exchanger 8, the electronic expansion valve 7, and the outdoor heat exchanger 9 and then returns to the compressor 10.

[0068] The air conditioner further includes a photovoltaic-thermal radiation refrigeration component 11, and the access position of the photovoltaic-thermal radiation refrigeration component 11 in the air-conditioning system is determined according to the operating mode of the air conditioner and the day-night periodic working conditions. The access control component is used to switch the access position of the photovoltaic-thermal radiation refrigeration component 11, and the access control component includes a first solenoid valve 1, a second solenoid valve 2, a third solenoid valve 3, a fourth solenoid valve 4, a fifth solenoid valve 5, and a sixth solenoid valve 6. The second solenoid valve 2 is arranged between the indoor heat exchanger 8 and the intake port of the compressor 10; the third solenoid valve 3 is arranged between the indoor heat exchanger 8 and the outdoor heat exchanger 9, specifically between the outdoor heat exchanger 9 and the electronic expansion valve 7. When the photovoltaic-thermal radiation refrigeration component 11 is not connected to the air conditioner, the second solenoid valve 2 and the third solenoid valve 3 are in the open state, so that the refrigerant forms a loop, and the air conditioner can cool and heat normally. When it is necessary to connect the photovoltaic-thermal radiation refrigeration component 11, the second solenoid valve 2 and the third solenoid valve 3 are opened or closed according to the access position of the photovoltaic-thermal radiation refrigeration component 11.

[0069] When the photovoltaic-thermal radiation refrigeration component 11 is connected between the indoor heat exchanger 8 and the intake port of the compressor 10, that is, when the photovoltaic-thermal radiation refrigeration component 11 is in the first position, at this time the photovoltaic-thermal radiation refrigeration component 11 is connected in parallel at both ends of the second solenoid valve 2, and both ends of the photovoltaic-thermal radiation refrigeration component 11 are respectively connected to both ends of the second solenoid valve 2 through the first solenoid valve 1 and the fourth solenoid valve 4. At this time, closing the second solenoid valve 2, opening the first solenoid valve 1 and the fourth solenoid valve 4 can enable the refrigerant flowing out of the indoor heat exchanger 8 in the refrigeration mode to flow through the first solenoid valve 1, the photovoltaic-thermal radiation refrigeration component 11, and the fourth solenoid valve 4 in sequence and then flow into the compressor 10.

[0070] When the photovoltaic-thermal radiation refrigeration component 11 is connected between the outdoor heat exchanger 9 and the indoor heat exchanger 8, that is, when the photovoltaic-thermal radiation refrigeration component 11 is in the second position, at this time the photovoltaic-thermal radiation refrigeration component 11 is connected in parallel at both ends of the third solenoid valve 3, and both ends of the photovoltaic-thermal radiation refrigeration component 11 are respectively connected to both ends of the third solenoid valve 3 through the fifth solenoid valve 5 and the sixth solenoid valve 6. At this time, closing the third solenoid valve 3, opening the fifth solenoid valve 5 and the sixth solenoid valve 6 can enable the refrigerant flowing out of the outdoor heat exchanger 9 in the refrigeration mode to flow through the fifth solenoid valve 5, the photovoltaic-thermal radiation refrigeration component 11, and the sixth solenoid valve 6 in sequence and then flow into the indoor heat exchanger 8.

[0071] When the photovoltaic-thermal radiation refrigeration component 11 is connected between the indoor heat exchanger 8 and the exhaust port of the compressor 10, that is, when the photovoltaic-thermal radiation refrigeration component 11 is in the third position, at this time, the photovoltaic-thermal radiation refrigeration component 11 is connected in parallel at both ends of the second solenoid valve 2, and both ends of the photovoltaic-thermal radiation refrigeration component 11 are respectively connected to both ends of the second solenoid valve 2 through the first solenoid valve 1 and the fourth solenoid valve 4. At this time, closing the second solenoid valve 2 and opening the first solenoid valve 1 and the fourth solenoid valve 4 can enable the refrigerant discharged from the compressor 10 in the heating mode to flow through the fourth solenoid valve 4, the photovoltaic-thermal radiation refrigeration component 11, and the first solenoid valve 1 in sequence and then flow into the indoor heat exchanger 8.

[0072] During the day, the photovoltaic-thermal radiation refrigeration component can evaporate and heat up the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component; at night, the photovoltaic-thermal radiation refrigeration component can condense and cool down the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component.

[0073] The structure of the photovoltaic-thermal radiation refrigeration component is as Figure 4 shown. The photovoltaic-thermal radiation refrigeration component includes a glass cover plate 12, an air interlayer 13, a photovoltaic cell 14, a heat absorption plate 15, a radiation refrigeration material coating 16, a thermal insulation material 17, and a refrigerant heat exchange flow channel 18. During the day, the refrigerant gas flows into the heat exchange flow channel and exchanges heat with the heat absorption plate to increase the temperature of the refrigerant. At night, the photovoltaic-thermal radiation plate coated with the radiation refrigeration material exchanges radiation heat with outer space close to absolute zero through the atmospheric window, thereby obtaining cold energy and causing the refrigerant in the heat exchange flow channel to cool down.

[0074] Photovoltaic-thermal devices and radiation refrigeration equipment are usually designed separately, resulting in insufficient utilization rate of the roof space. The present invention integrates photovoltaic-thermal technology and radiation refrigeration technology into a single composite device, improves the utilization rate of the roof space, and reduces the floor area of the equipment. At the same time, a three-stage energy conversion chain of "photovoltaic power generation - heat energy recovery - radiation refrigeration" is constructed to achieve cascaded utilization and efficient coordination of energy.

[0075] See Figure 2 the structural schematic diagram of an embodiment of the device of the present invention shown. The control device of this air conditioner may include: an acquisition unit 102 and a control unit 104.

[0076] The acquisition unit 102 is configured to acquire the operating mode and the day-night periodic working condition of the air conditioner during the operation of the air conditioner; the day-night periodic working condition includes day and night.

[0077] When determining that the current day-night periodic working condition is day or night, it can be determined according to the magnitude of the acquisition value of the solar radiation sensor. For example, the radiation is less than 50W / m 2It can be determined as night; a temperature sensor can also be equipped to make a judgment based on the temperature of the heat absorption plate of the photovoltaic-thermal radiation refrigeration component; or it can be judged according to the current time and sunrise / sunset time.

[0078] Judging whether it is day or night currently is to switch the functional mode of the photovoltaic-thermal radiation refrigeration composite device according to the environmental characteristics in different periods, so as to achieve efficient utilization of energy and optimization of system energy efficiency.

[0079] When there is sufficient sunlight during the day, the photovoltaic-thermal panel can generate electricity and collect heat by absorbing solar energy. At this time, the system switches to the day cooling or heating mode, preheating the refrigerant by using the photovoltaic-thermal panel, and at the same time reducing the temperature of the photovoltaic module through refrigerant convection, avoiding the decrease in power generation efficiency caused by high temperature, and achieving multiple benefits of power generation, heat energy recovery, and temperature control.

[0080] At night, there is no sunlight but it is suitable for radiative cooling. The environmental temperature decreases and the radiative characteristics of the atmospheric window allow heat to dissipate into space. The system switches to the night cooling mode, and directly dissipates heat into space by using the radiative cooling material on the surface of the composite device, and performs secondary condensation on the refrigerant at the outlet of the condenser to increase the subcooling degree, thereby reducing the compressor load and improving the refrigeration efficiency.

[0081] The control unit 104 is configured to control the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and the day-night periodic working conditions.

[0082] In this solution, by adjusting the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode of the air conditioner and the day-night periodic working conditions, in the day cooling mode, the composite device uses the photovoltaic-thermal panel to generate electricity, collect heat and preheat the refrigerant gas at the inlet of the compressor, which can reduce the compressor power consumption, lower the temperature of the photovoltaic module and improve the power generation efficiency; in the night cooling mode, the radiative cooling capacity is used to perform secondary condensation on the refrigerant, which can increase the refrigerant subcooling degree and refrigeration energy efficiency; in the day heating mode, the composite device preheats the refrigerant at the outlet of the compressor, raises the air outlet temperature of the indoor heat exchanger, and improves the energy efficiency of the air conditioner.

[0083] In some embodiments, the specific process in which the control unit 104 controls the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and the day-night periodic working conditions includes: when the operating mode of the air conditioner is the cooling mode, judging whether the day-night periodic working condition is day; if the day-night periodic working condition is day, controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component so that the photovoltaic-thermal radiation refrigeration component is in the first position to preheat the refrigerant gas flowing into the intake port of the compressor.

[0084] During the day when the air conditioner is cooling, the photovoltaic-thermal radiation cooling component is connected between the indoor heat exchanger and the compressor inlet. The refrigerant flowing out of the indoor heat exchanger reaches the compressor inlet after passing through the photovoltaic-thermal radiation cooling component. The photovoltaic-thermal radiation cooling component uses the photovoltaic-thermal panel to generate electricity and collect heat, and preheats the refrigerant gas at the compressor inlet, increasing the intake temperature of the compressor, thereby reducing the compressor power consumption. At the same time, it reduces the temperature of the photovoltaic module and improves the power generation efficiency of the photovoltaic module. As Figure 3 shown, at this time, the first solenoid valve 1, the third solenoid valve 3, and the fourth solenoid valve 4 are in the open state, the second solenoid valve 2, the fifth solenoid valve 5, and the sixth solenoid valve 6 are in the closed state, and the circulation flow direction of the refrigerant is: compressor 10, outdoor heat exchanger 9, electronic expansion valve 7, indoor heat exchanger 8, first solenoid valve 1, photovoltaic-thermal radiation cooling component 11, fourth solenoid valve 4, compressor 10.

[0085] The refrigerant gas at the compressor inlet is preheated by the photovoltaic-thermal panel, reducing the compression ratio of the compressor, thereby reducing power consumption and improving the thermodynamic efficiency of the system. When the refrigerant flows through the photovoltaic-thermal panel, the waste heat is carried away through forced convection heat transfer, avoiding the attenuation of the power generation efficiency of the component due to high temperature.

[0086] In some embodiments, the specific process of the control unit 104 controlling the access control component to switch the access position of the photovoltaic-thermal radiation cooling component according to the operating mode and the day-night periodic working condition further includes: when the operating mode of the air conditioner is the cooling mode, determining whether the day-night periodic working condition is night; if the day-night periodic working condition is night, controlling the access control component to switch the access position of the photovoltaic-thermal radiation cooling component so that the photovoltaic-thermal radiation cooling component is in the second position to perform secondary condensation on the refrigerant flowing out of the condenser.

[0087] During the night when the air conditioner is cooling, the photovoltaic-thermal radiation cooling component is connected between the outdoor heat exchanger and the indoor heat exchanger. The refrigerant flowing out of the outdoor heat exchanger is sent to the indoor heat exchanger after passing through the photovoltaic-thermal radiation cooling component. The photovoltaic-thermal radiation cooling component uses the cold generated by radiation cooling to perform secondary condensation on the flowing refrigerant, increasing the subcooling degree of the refrigerant and improving the refrigeration energy efficiency. As Figure 3 shown, at this time, the first solenoid valve 1, the third solenoid valve 3, and the fourth solenoid valve 4 are in the closed state, the second solenoid valve 2, the fifth solenoid valve 5, and the sixth solenoid valve 6 are in the open state, and the circulation flow direction of the refrigerant is: compressor 10, outdoor heat exchanger 9, fifth solenoid valve 5, photovoltaic-thermal radiation cooling component 11, sixth solenoid valve 6, electronic expansion valve 7, indoor heat exchanger 8, second solenoid valve 2, compressor 10.

[0088] The cold generated by radiative cooling is used to secondarily condense the refrigerant at the outlet of the condenser, increasing the subcooling degree of the refrigerant, reducing the working load of the compressor, and improving the refrigeration efficiency of the system. By virtue of the infrared radiation characteristics of the atmospheric window, heat is directly radiated into outer space in the form of electromagnetic waves without additional energy input, which is energy-saving and environmentally friendly.

[0089] In some embodiments, the specific process in which the control unit 104 controls the access control component to switch the access position of the photovoltaic-thermal radiative cooling component according to the operating mode and the day-night periodic working condition further includes: when the operating mode of the air conditioner is the heating mode, determining whether the day-night periodic working condition is daytime; if the day-night periodic working condition is daytime, controlling the access control component to switch the access position of the photovoltaic-thermal radiative cooling component so that the photovoltaic-thermal radiative cooling component is in the third position to preheat the refrigerant discharged from the compressor and increase the air outlet temperature of the indoor heat exchanger.

[0090] During the day when the air conditioner is in heating mode, the photovoltaic-thermal radiative cooling component is connected between the indoor heat exchanger and the compressor exhaust port, and the refrigerant discharged from the compressor is sent to the indoor heat exchanger after passing through the photovoltaic-thermal radiative cooling component. The photovoltaic-thermal radiative cooling component uses the photovoltaic-thermal panel to generate electricity and collect heat, and raises the temperature of the refrigerant gas discharged from the compressor, thereby increasing the air outlet temperature indoors and improving the energy efficiency of the air conditioner. As Figure 3 shown, at this time, the first solenoid valve 1, the third solenoid valve 3, and the fourth solenoid valve 4 are in the open state, the second solenoid valve 2, the fifth solenoid valve 5, and the sixth solenoid valve 6 are in the closed state, and the refrigerant circulation flow direction is: compressor 10, fourth solenoid valve 4, photovoltaic-thermal radiative cooling component 11, first solenoid valve 1, indoor heat exchanger 8, electronic expansion valve 7, third solenoid valve 3, outdoor heat exchanger 9, compressor 10.

[0091] During the night when the air conditioner is in heating mode, the photovoltaic-thermal radiative cooling component is not connected to the refrigerant circuit, and the air conditioner operates in the normal mode, and the refrigerant does not flow through the photovoltaic-thermal radiative cooling component.

[0092] When the air conditioner switches the operating mode, the compressor is temporarily stopped, and the internal fan continues to supply air without stopping. At this time, the opening and closing operations of the solenoid valves for the next mode are performed, which can avoid pressure shock, and the compressor is restarted after the opening and closing of the solenoid valves are completed.

[0093] The refrigerant at the outlet of the compressor is preheated through the composite device, directly increasing the air outlet temperature of the indoor heat exchanger, improving the heating effect, and enhancing the comfort on the user side. At the same time, the refrigerant circulation path is optimized to reduce energy loss, making the heating process more efficient and reducing the overall energy consumption.

[0094] Figure 5 is a schematic flow chart of the control method of the air conditioner integrated with solar photovoltaic-thermal radiative cooling of the present invention. AsFigure 5 As shown, the method includes:

[0095] Step 1: After the air conditioner is turned on and running, determine whether the current mode is the daytime cooling mode, the daytime heating mode, or the nighttime cooling mode. If the current mode is the daytime cooling mode or the daytime heating mode, then execute Step 2; if the current mode is the nighttime cooling mode, then execute Step 3.

[0096] Step 2: Open the first solenoid valve, the third solenoid valve, and the fourth solenoid valve 4, and close the second solenoid valve 2, the fifth solenoid valve 5, and the sixth solenoid valve 6.

[0097] Step 3: Open the second solenoid valve 2, the fifth solenoid valve 5, and the sixth solenoid valve 6, and close the second solenoid valve 2, the fifth solenoid valve 5, and the sixth solenoid valve 6.

[0098] Since the processing and functions implemented by the device in this embodiment are basically corresponding to the embodiments, principles, and examples of the foregoing method, for the details not described in the description of this embodiment, reference can be made to the relevant descriptions in the foregoing embodiments and will not be elaborated here.

[0099] Adopting the technical solution of the present invention, the air conditioner includes a photovoltaic-thermal radiation refrigeration component, an indoor heat exchanger, an outdoor heat exchanger, a compressor, and an access control component; the access control component is used to switch the access position of the photovoltaic-thermal radiation refrigeration component; the access positions of the photovoltaic-thermal radiation refrigeration component include a first position, a second position, and a third position; the first position is between the indoor heat exchanger and the intake port of the compressor; the second position is between the outdoor heat exchanger and the indoor heat exchanger; the third position is between the indoor heat exchanger and the exhaust port of the compressor; during the day, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to evaporate and heat up; at night, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to condense and cool down; during the operation of the air conditioner, the access control component is controlled to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the air conditioner operation mode and the day-night periodic working conditions. By adjusting the access position of the photovoltaic-thermal radiation refrigeration component according to the operation mode of the air conditioner and the day-night periodic working conditions, the photovoltaic-thermal radiation refrigeration component causes the refrigerant to evaporate or condense, thereby reducing the compressor power consumption and improving the energy efficiency of the air conditioner.

[0100] According to an embodiment of the present invention, there is also provided an air conditioner corresponding to the control device of the air conditioner. This air conditioner may include: the control device of the air conditioner described above.

[0101] Since the processing and functions implemented by the air conditioner in this embodiment are basically corresponding to the embodiments, principles, and examples of the foregoing device, for the details not described in the description of this embodiment, reference can be made to the relevant descriptions in the foregoing embodiments and will not be elaborated here.

[0102] Adopting the technical solution of the present invention, an air conditioner includes a photovoltaic-thermal radiation refrigeration component, an indoor heat exchanger, an outdoor heat exchanger, a compressor, and an access control component; the access control component is used to switch the access position of the photovoltaic-thermal radiation refrigeration component; the access positions of the photovoltaic-thermal radiation refrigeration component include a first position, a second position, and a third position; the first position is located between the indoor heat exchanger and the intake port of the compressor; the second position is located between the outdoor heat exchanger and the indoor heat exchanger; the third position is located between the indoor heat exchanger and the exhaust port of the compressor; during the day, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to evaporate and heat up; at night, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to condense and cool down; during the operation of the air conditioner, the access control component is controlled to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the air conditioner operation mode and the day-night periodic working conditions. By adjusting the access position of the photovoltaic-thermal radiation refrigeration component according to the air conditioner operation mode and the day-night periodic working conditions, the photovoltaic-thermal radiation refrigeration component causes the refrigerant to evaporate or condense, thereby reducing the compressor power consumption and improving the energy efficiency of the air conditioner.

[0103] According to an embodiment of the present invention, there is also provided a storage medium corresponding to the control method of the air conditioner. The storage medium includes a stored program, wherein, when the program runs, it controls the device where the storage medium is located to execute the control method of the air conditioner described above.

[0104] Since the processing and functions implemented by the storage medium of this embodiment are basically corresponding to the embodiments, principles, and examples of the foregoing method, for the parts not described in detail in the description of this embodiment, reference can be made to the relevant descriptions in the foregoing embodiments, and details will not be repeated here.

[0105] Adopting the technical solution of the present invention, an air conditioner includes a photovoltaic-thermal radiation refrigeration component, an indoor heat exchanger, an outdoor heat exchanger, a compressor, and an access control component; the access control component is used to switch the access position of the photovoltaic-thermal radiation refrigeration component; the access positions of the photovoltaic-thermal radiation refrigeration component include a first position, a second position, and a third position; the first position is located between the indoor heat exchanger and the intake port of the compressor; the second position is located between the outdoor heat exchanger and the indoor heat exchanger; the third position is located between the indoor heat exchanger and the exhaust port of the compressor; during the day, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to evaporate and heat up; at night, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to condense and cool down; during the operation of the air conditioner, the access control component is controlled to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the air conditioner operation mode and the day-night periodic working conditions. By adjusting the access position of the photovoltaic-thermal radiation refrigeration component according to the air conditioner operation mode and the day-night periodic working conditions, the photovoltaic-thermal radiation refrigeration component causes the refrigerant to evaporate or condense, thereby reducing the compressor power consumption and improving the energy efficiency of the air conditioner.

[0106] According to an embodiment of the present invention, there is also provided a computer program product corresponding to a control method of an air conditioner. The computer program product includes a computer program, and when the computer program product is processed and executed, the steps of the above-mentioned control method of the air conditioner are implemented.

[0107] Since the processing and functions implemented by the computer program product of this embodiment are basically corresponding to the embodiments, principles and examples of the foregoing method, for the details not described in the description of this embodiment, reference can be made to the relevant descriptions in the foregoing embodiments, and no further elaboration will be made here.

[0108] Adopting the technical solution of the present invention, the air conditioner includes a photovoltaic-thermal radiation refrigeration component, an indoor heat exchanger, an outdoor heat exchanger, a compressor, and an access control component; the access control component is used to switch the access position of the photovoltaic-thermal radiation refrigeration component; the access positions of the photovoltaic-thermal radiation refrigeration component include a first position, a second position, and a third position; the first position is between the indoor heat exchanger and the intake port of the compressor; the second position is between the outdoor heat exchanger and the indoor heat exchanger; the third position is between the indoor heat exchanger and the exhaust port of the compressor; during the day, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to evaporate and heat up; at night, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to condense and cool down; during the operation of the air conditioner, the access control component is controlled to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the air conditioner operation mode and the day-night periodic working conditions. By adjusting the access position of the photovoltaic-thermal radiation refrigeration component according to the operation mode of the air conditioner and the day-night periodic working conditions, the photovoltaic-thermal radiation refrigeration component causes the refrigerant to evaporate or condense, thereby reducing the power consumption of the compressor and improving the energy efficiency of the air conditioner.

[0109] In summary, it is easy for those skilled in the art to understand that, on the premise of no conflict, the above-mentioned advantageous ways can be freely combined and superimposed.

[0110] The above are only the embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A control method for an air conditioner, characterized in that The air conditioner includes a photovoltaic-thermal radiation refrigeration component, an indoor heat exchanger, an outdoor heat exchanger, a compressor, and an access control component; the access control component is used to switch the access position of the photovoltaic-thermal radiation refrigeration component; the access positions of the photovoltaic-thermal radiation refrigeration component include a first position, a second position, and a third position; the first position is between the indoor heat exchanger and the intake port of the compressor; the second position is between the outdoor heat exchanger and the indoor heat exchanger; the third position is between the indoor heat exchanger and the exhaust port of the compressor; During the day, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to evaporate and heat up; during the night, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to condense and cool down; The method includes: During the operation of the air conditioner, obtain the operation mode and the day-night periodic working condition of the air conditioner; the day-night periodic working condition includes day and night; Control the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operation mode and the day-night periodic working condition.

2. The control method of the air conditioner according to claim 1, wherein, Controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operation mode and the day-night periodic working condition includes: When the operation mode of the air conditioner is the refrigeration mode, determine whether the day-night periodic working condition is day; If the day-night periodic working condition is day, control the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component so that the photovoltaic-thermal radiation refrigeration component is in the first position.

3. The control method of the air conditioner according to claim 1, wherein Controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operation mode and the day-night periodic working condition further includes: When the operation mode of the air conditioner is the refrigeration mode, determine whether the day-night periodic working condition is night; If the day-night periodic working condition is night, control the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component so that the photovoltaic-thermal radiation refrigeration component is in the second position.

4. The control method of the air conditioner according to claim 1, wherein Controlling the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operation mode and the day-night periodic working condition further includes: When the operation mode of the air conditioner is the heating mode, determine whether the day-night periodic working condition is day; If the day-night periodic working condition is day, control the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component so that the photovoltaic-thermal radiation refrigeration component is in the third position.

5. The control method of an air conditioner according to any one of claims 1 to 4, characterized in that, The access control component includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, and a sixth solenoid valve; the second solenoid valve is arranged between the indoor heat exchanger and the intake port of the compressor; the third solenoid valve is arranged between the indoor heat exchanger and the outdoor heat exchanger; The photovoltaic-thermal radiation refrigeration component is connected in parallel with the second solenoid valve, and both ends of the photovoltaic-thermal radiation refrigeration component are respectively connected to both ends of the second solenoid valve through the first solenoid valve and the fourth solenoid valve; the photovoltaic-thermal radiation refrigeration component is also connected in parallel with the third solenoid valve, and both ends of the photovoltaic-thermal radiation refrigeration component are respectively connected to both ends of the third solenoid valve through the fifth solenoid valve and the sixth solenoid valve; When the photovoltaic-thermal radiation refrigeration component is in the first position or the third position, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are in the open state, and the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve are in the closed state; when the photovoltaic-thermal radiation refrigeration component is in the second position, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are in the closed state, and the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve are in the open state.

6. A control device for an air conditioner, characterized in that, The air conditioner includes a photovoltaic-thermal radiation refrigeration component, an indoor heat exchanger, an outdoor heat exchanger, a compressor, and an access control component; the access control component is used to switch the access position of the photovoltaic-thermal radiation refrigeration component; the access positions of the photovoltaic-thermal radiation refrigeration component include a first position, a second position, and a third position; the first position is between the indoor heat exchanger and the intake port of the compressor; the second position is between the outdoor heat exchanger and the indoor heat exchanger; the third position is between the indoor heat exchanger and the exhaust port of the compressor; During the day, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to evaporate and heat up; at night, the photovoltaic-thermal radiation refrigeration component can cause the refrigerant flowing through the photovoltaic-thermal radiation refrigeration component to condense and cool down; The control device includes: An acquisition unit configured to acquire the operating mode and the day-night periodic working condition of the air conditioner during the operation of the air conditioner; the day-night periodic working condition includes day and night; A control unit configured to control the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and the day-night periodic working condition.

7. The control device of an air conditioner according to claim 6, wherein, The control unit controls the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component according to the operating mode and the day-night periodic working condition, including: When the operating mode of the air conditioner is the refrigeration mode, determining whether the day-night periodic working condition is day; If the day-night periodic working condition is day, then control the access control component to switch the access position of the photovoltaic-thermal radiation refrigeration component so that the photovoltaic-thermal radiation refrigeration component is in the first position.

8. An air conditioner, characterized in that, Including: The control device of the air conditioner according to claim 6 or 7.

9. A storage medium, characterized in that, The storage medium includes a stored program, wherein when the program runs, it controls the device where the storage medium is located to execute the control method of the air conditioner according to any one of claims 1 to 5.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

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