Dew point heat dissipation device, photovoltaic air conditioner and control method

Abstract

The present invention provides a dew point heat dissipation device, a photovoltaic air conditioner and a control method. The dew point heat dissipation device includes a heat dissipation component and a connection component. The heat dissipation component includes a water collecting component, a wet channel and a dry channel. The water collecting component is connected to the indoor unit of the photovoltaic air conditioner through the connection component, and is used to collect condensed water generated by the indoor unit. The water collecting component is also connected to the wet channel, and is used to spray condensed water into the wet channel so that the wet channel generates secondary air. The wet channel is connected to the outdoor unit of the photovoltaic air conditioner through the connection component. Primary air is provided in the dry channel, and the dry channel is respectively connected to the indoor unit and the outdoor unit through the connection component. Among them, the secondary air is used to cool the primary air so that the temperature of the primary air approaches the dew point temperature, and the primary air is used to dissipate heat for the outdoor unit through the connection component. The present invention can dissipate heat for the outdoor unit through the primary air, while avoiding corrosion to the outdoor unit, improving the heat dissipation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic air conditioners, and in particular to a dew point heat dissipation device, a photovoltaic air conditioner and a control method. Background Art

[0002] As environmental protection requirements become increasingly stringent, it is a general trend to use clean energy to replace traditional energy. For example, in the field of air conditioners, the number of users of photovoltaic air conditioners has increased year by year. The current photovoltaic air conditioners mainly convert solar energy into electrical energy to provide power support for the photovoltaic air conditioner system. However, since photovoltaic air conditioners need to convert solar energy into electrical energy, their heat generation is more serious than that of traditional air conditioners, so the heat dissipation of photovoltaic air conditioners is particularly important.

[0003] At present, photovoltaic air conditioners usually achieve heat dissipation of the condenser by spraying condensed water on the condenser. However, the temperature of the condensed water is not a fixed value, but a dynamic value, that is, the temperature of the condensed water is generally affected by the cooling effect of the evaporator and the indoor temperature. When the temperature of the condensed water is low, the heat dissipation effect is ideal. When the temperature of the condensed water is high, the heat dissipation effect is poor. At the same time, spraying condensed water on the condenser will also cause corrosion of the condenser and reduce the life of the photovoltaic air conditioner. Summary of the invention

[0004] The present invention provides a dew point heat dissipation device, a photovoltaic air conditioner and a control method, aiming to solve the problems that the heat dissipation efficiency of the current photovoltaic air conditioner fluctuates widely and may cause corrosion to the condenser.

[0005] In a first aspect, the present invention provides a dew-point heat dissipation device, which is applied to a photovoltaic air conditioner. The dew-point heat dissipation device includes a heat dissipation component and a connecting component; the heat dissipation component includes a water collecting component, a wet channel and a dry channel, the water collecting component is connected to the indoor unit of the photovoltaic air conditioner through the connecting component, and is used to collect condensed water generated by the indoor unit, and the water collecting component is also connected to the wet channel, and is used to spray the condensed water into the wet channel so that the wet channel generates secondary air, and the wet channel is connected to the outdoor unit of the photovoltaic air conditioner through the connecting component; primary air is provided in the dry channel, and the dry channel is respectively connected to the indoor unit and the outdoor unit through the connecting component; wherein the secondary air is used to cool the primary air so that the temperature of the primary air approaches the dew point temperature, and the primary air is used to dissipate heat for the outdoor unit through the connecting component.

[0006] Furthermore, the connecting assembly includes a pipe assembly and a driving assembly; the pipe assembly is respectively connected to the water collecting part, the dry channel, the wet channel, the outdoor unit and the indoor unit; the driving assembly is respectively arranged at the connection between the pipe assembly and the dry channel and at the connection between the pipe assembly and the wet channel.

[0007] Furthermore, the pipe assembly includes a first connecting pipe, a second connecting pipe and a third connecting pipe; the first connecting pipe is connected between the dry channel and the indoor unit, the second connecting pipe is connected between the dry channel and the outdoor unit and between the wet channel and the outdoor unit, and the third connecting pipe is connected between the water collecting part and the indoor unit.

[0008] Furthermore, the connection assembly also includes a control valve, and the control valve is respectively arranged on the first connecting pipe and the second connecting pipe.

[0009] Furthermore, the driving assembly includes a first fan and a second fan; the first fan is arranged at the connection between the dry channel and the pipeline assembly, and the second fan is arranged at the connection between the wet channel and the pipeline assembly.

[0010] In a second aspect, the present invention provides a photovoltaic air conditioner, which includes an indoor unit, an outdoor unit and the dew-point heat dissipation device described in any one of the above items; the outdoor unit includes a condenser and a radiator, and the condenser and the radiator are both connected to the heat dissipation component of the dew-point heat dissipation device through the connecting component of the dew-point heat dissipation device; wherein the primary air dissipates heat for the condenser and / or the radiator through the connecting component.

[0011] In a third aspect, the present invention provides a control method, the method comprising:

[0012] Confirming the current operating status of the photovoltaic air conditioner;

[0013] If the photovoltaic air conditioner is currently in a high-load operating state, the heat dissipation component of the dew-point heat dissipation device is controlled to be connected to the outdoor unit so that the primary air of the heat dissipation component dissipates heat for the outdoor unit.

[0014] The present invention discloses a photovoltaic air conditioner and a control method for controlling the photovoltaic air conditioner. The photovoltaic air conditioner comprises an indoor unit, an outdoor unit and a dew point heat dissipation device. The dew point heat dissipation device comprises a heat dissipation component and a connection component. The heat dissipation component is connected to a condenser and a radiator of the outdoor unit through the connection component. The heat dissipation component can provide primary air and secondary air, and can cool the primary air through the secondary air so that the temperature of the primary air approaches the dew point temperature. When heat dissipation is required, the primary air in the heat dissipation component can be sprayed onto the surface of the condenser or the radiator, thereby reducing the temperature of the condenser and the radiator. On the one hand, the temperature of the primary air approaches the dew point temperature, which can fully reduce the temperature of the condenser and the radiator and improve the heat dissipation efficiency. On the other hand, by dissipating the heat for the condenser and the radiator through the primary air, the corrosion of the condenser and the radiator can be prevented, thereby increasing the service life of the photovoltaic air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0016] Figure 1 is a schematic structural diagram of a photovoltaic air conditioner provided by an embodiment of the present invention;

[0017] Figure 2 is a flow chart of a control method provided by an embodiment of the present invention;

[0018] Figure 3 is a sub-flow chart of a control method provided by an embodiment of the present invention;

[0019] Figure 4 is a sub-flow chart of a control method provided by an embodiment of the present invention;

[0020] Description of the drawings: 1000, photovoltaic air conditioner, 100, dew point heat dissipation device; 10, heat dissipation component; 11, water collecting part; 12, dry channel; 13, wet channel; 14, water pump; 20, connection component; 21, pipeline component; 211, first connecting pipeline; 212, second connecting pipeline; 213, third connecting pipeline; 22, driving component; 221, first fan; 222, second fan; 23, control valve; 200, indoor unit; 300, outdoor unit; 310, condenser; 320, radiator; 330, photovoltaic component. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, operations, elements, components and / or groups thereof.

[0023] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms of "a", "an" and "the" are intended to include plural forms. It should also be further understood that the term "and / or" used in the specification of the present invention and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0024] In addition, the directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only for reference to the directions of the attached drawings and the use status of the product. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In addition, in the drawings, structures with similar or identical structures are represented by the same reference numerals.

[0025] See also Figure 1 , Figure 1 FIG. 1 is a schematic diagram of the structure of a photovoltaic air conditioner 1000 provided in one embodiment of the present invention. Figure 1 As shown, the dew point heat dissipation device 100 includes a heat dissipation component 10 and a connection component 20; the heat dissipation component 10 is used to provide primary air and secondary air, and cool the primary air through the secondary air so that the temperature of the primary air approaches the dew point temperature; one end of the connection component 20 is connected to the heat dissipation component 10, and the other end of the connection component 20 is respectively connected to the outdoor unit 300 and the indoor unit 200 of the photovoltaic air conditioner 1000; wherein, the primary air dissipates heat for the outdoor unit 300 through the connection component 20.

[0026] Specifically, for traditional air conditioners that use photovoltaic power generation to provide electricity, they generally dissipate heat through condensed water or an external water source. The temperature of the condensed water is affected by the cooling effect of the evaporator and the indoor temperature. Its temperature is usually between the dew point temperature and the indoor temperature, that is, the highest temperature of the condensed water can approach the indoor temperature, and the lowest temperature approaches the dew point temperature. The lower the temperature of the condensed water, the better the heat dissipation effect, and the higher the temperature of the condensed water, the worse the heat dissipation effect. Therefore, the heat dissipation effect of the traditional heat dissipation method fluctuates greatly. At the same time, spraying the condensed water directly on the equipment is likely to cause corrosion to the equipment over time, reducing its service life, or requiring additional anti-corrosion devices, resulting in increased costs.

[0027] The photovoltaic air conditioner 1000 provided by the present invention includes an indoor unit 200, an outdoor unit 300 and a dew point heat dissipation device 100. The indoor unit 200 may include an evaporator, the main function of which is to convert liquid refrigerant into gaseous state and absorb heat from the cooled space at the same time. The outdoor unit 300 may include a condenser 310 and a photovoltaic module 330. The main function of the condenser 310 is to cool the high-temperature and high-pressure refrigerant vapor discharged from the compressor to condense it into a liquid state. Its working principle is that after the compressor compresses the refrigerant into high-temperature and high-pressure gas, these gases enter the condenser 310 and exchange heat with the external environment through the pipes or fins of the condenser 310. In this process, the temperature of the refrigerant gas gradually decreases, and the pressure also decreases slightly, and finally condenses into a liquid refrigerant. The photovoltaic module 330 is used to absorb solar energy and convert solar energy into electrical energy to provide kinetic energy for the photovoltaic air conditioner 1000. The specific structure of the photovoltaic module 330 can be any photovoltaic device commonly used in the art, and its specific structure is not limited here.

[0028] The dew point heat dissipation device 100 includes a heat dissipation component 10 and a connection component 20. The heat dissipation component 10 is respectively connected to the indoor unit 200 and the outdoor unit 300 through the connection component 20. The heat dissipation component 10 is mainly used to provide primary air and secondary air for the photovoltaic air conditioner 1000. The primary air refers to the air in the heat dissipation component 10 after the air in the environment enters the heat dissipation component 10, and the secondary air is humid air with moisture, that is, the secondary air can be formed by spraying condensed water on the primary air. The temperature of the secondary air formed is lower than that of the primary air, and the primary air can be cooled by the secondary air so that the temperature of the primary air is reduced to a temperature close to the dew point temperature.

[0029] For example, two receiving parts may be provided, namely a first receiving part and a second receiving part, and the first receiving part and the second receiving part may be connected through a water film. In the initial state, the first receiving part and the second receiving part both contain primary air, and the primary air is obtained by the outside air entering the first receiving part and the second receiving part. Then, condensed water or water from other water sources is sprayed on the second receiving part, so that the sprayed water is mixed with the primary air to obtain secondary air, and the temperature of the obtained secondary air is lower than the temperature of the primary air. At this time, the secondary air in the second receiving part exchanges heat with the primary air in the first receiving part through the water film, so that the temperature of the primary air in the first receiving part is reduced. During the heat exchange process, the temperature of the primary air is reduced, but the humidity remains unchanged. At the same time, the water in the second receiving part evaporates, thereby reducing the temperature of the water film, thereby increasing the heat exchange temperature difference between the first receiving part and the second receiving part. Repeating the above process can reduce the temperature of the primary air to a temperature close to the dew point temperature.

[0030] When the temperature of the condenser 310 or the radiator 320 of the photovoltaic air conditioner 1000 exceeds the corresponding threshold temperature, the primary air in the heat dissipation assembly 10 is sprayed onto the condenser 310 or the radiator 320 through the connection assembly 20 to cool down the condenser 310 and the radiator 320. For example, if the threshold temperature of the condenser 310 is the first preset temperature and the threshold temperature of the radiator 320 is the second preset temperature, temperature sensors may be provided on the condenser 310 and the radiator 320, respectively, to monitor the temperature of the condenser 310 and the radiator 320. When the temperature of the condenser 310 exceeds the first preset temperature, the heat dissipation assembly 10 is connected to the condenser 310 through the connection assembly 20, and the primary air in the heat dissipation assembly 10 is sprayed onto the condenser 310 to cool down the condenser 310. When the temperature of the radiator 320 exceeds the second preset temperature, the heat dissipation assembly 10 is connected to the radiator 320 through the connection assembly 20, and the primary air in the heat dissipation assembly 10 is sprayed onto the radiator 320 to cool down the radiator 320. When the temperature of the condenser 310 exceeds the first preset temperature and the temperature of the radiator 320 exceeds the second preset temperature, the heat dissipation component 10 is connected to the condenser 310 and the radiator 320 respectively, and the primary air of the heat dissipation component 10 is sprayed onto the condenser 310 and the radiator 320 respectively, so as to cool down the condenser 310 and the radiator 320 at the same time.

[0031] As a further embodiment, the heat dissipation component 10 includes a water collecting component 11, a dry channel 12 and a wet channel 13; the water collecting component 11 is connected to the indoor unit 200 through the connecting component 20, and is used to collect condensed water generated by the indoor unit 200, and the water collecting component 11 is also connected to the wet channel 13, and is used to spray the condensed water into the wet channel 13 so that the wet channel 13 generates the secondary air; the dry channel 12 is respectively connected to the indoor unit 200 and the outdoor unit 300 through the connecting component 20, and the wet channel 13 is connected to the outdoor unit 300 through the connecting component 20.

[0032] Among them, the heat dissipation component 10 includes a water collecting component 11, a dry channel 12 and a wet channel 13. The water collecting component 11 is connected to the indoor unit 200 through a connecting component 20. The dry channel 12 is the first receiving component mentioned above, and the wet channel 13 is the second receiving component mentioned above. The dry channel 12 is respectively connected to the indoor unit 200 and the outdoor unit 300 through the connecting component 20, and the wet channel 13 is connected to the outdoor unit 300 through the connecting component 20.

[0033] The indoor unit 200 includes an evaporator, which generates condensed water when working. The generated condensed water can enter the water collecting part 11 through the connecting component 20, so that the condensed water can be reused. The water collecting part 11 is used to collect condensed water, and the water collecting part 11 is also connected to the wet channel 13. For example, the water collecting part 11 can be connected to the wet channel 13 through a pipe, and a water pump 14 is provided on the pipe, and the water pump 14 can transport the condensed water in the water collecting part 11 to the wet channel 13. Preferably, a spray part can be provided at the water outlet of the pipe, and the spray part can spray the condensed water into the wet channel 13 to improve the efficiency of generating secondary air. In addition, in addition to spraying the condensed water into the inside and outside of the wet channel 13 through the water collecting part 11, it is also possible to spray it from an external water source, or to add low-temperature water to the water collecting part 11 to replace the condensed water.

[0034] When the condensed water is sprayed into the wet channel 13, a water film is formed between the wet channel 13 and the dry channel 12. The water film is used to separate the wet channel 13 and the dry channel 12. At this time, the temperature of the secondary air in the wet channel 13 is lower than the temperature of the primary air in the dry channel 12. The primary air exchanges heat with the water film, and the water film absorbs the heat in the primary air and evaporates, thereby reducing the temperature of the primary air. While reducing the temperature of the primary air, the temperature of the water film itself will also decrease, thereby increasing the heat exchange temperature difference between the dry channel 12 and the wet channel 13. The primary air in the dry channel 12 continues to exchange heat with the water film to cool down until the temperature of the primary air approaches the dew point temperature. In the above cooling process, only the temperature of the primary air changes, while the humidity remains unchanged. That is, the primary air will not carry more water molecules, thereby avoiding corrosion to the condenser 310 and the radiator 320.

[0035] As a further embodiment, the connecting assembly 20 includes a pipe assembly 21 and a driving assembly 22; the pipe assembly 21 is respectively connected to the water collecting part 11, the dry channel 12, the wet channel 13, the outdoor unit 300 and the indoor unit 200; the driving assembly 22 is respectively arranged at the connection between the pipe assembly 21 and the dry channel 12 and at the connection between the pipe assembly 21 and the wet channel 13.

[0036] The pipe assembly 21 is used to connect the water collecting part 11, the dry channel 12, the wet channel 13, the indoor unit 200 and the outdoor unit 300. The condensed water generated by the indoor unit 200 enters the water collecting part 11 through the pipe assembly 21, and the primary air in the dry channel 12 enters the indoor unit 200 through the pipe assembly 21. At the same time, the primary air in the dry channel 12 can also dissipate heat for the outdoor unit 300 through the pipe assembly 21, and the secondary air in the wet channel 13 enters the outdoor unit 300 through the pipe assembly 21, thereby increasing the cooling capacity of the outdoor unit 300.

[0037] The indoor unit 200 generates condensed water during operation, and the generated condensed water enters the water collecting part 11 through the pipe assembly 21, so that the water collecting part 11 can collect the condensed water. The temperature of the primary air in the dry channel 12 approaches the dew point temperature. When the photovoltaic air conditioner 1000 operates normally, the primary air in the dry channel 12 enters the indoor unit 200 through the pipe assembly 21, and the evaporator of the indoor unit 200 and the primary air exchange heat convection to cool the primary air. Since the temperature of the primary air has approached the dew point temperature, it forms condensed water after cooling again. The formed condensed water enters the water collecting part 11 through the pipe assembly 21. When the photovoltaic air conditioner 1000 operates normally, the secondary air in the wet channel 13 also enters the outdoor unit 300 through the pipe assembly 21, thereby improving the cooling efficiency of the outdoor unit 300. When the photovoltaic air conditioner 1000 is in a high-load operation state, the primary air in the dry channel 12 enters the outdoor unit 300 through the pipe assembly 21, and dissipates heat for the condenser 310 and the radiator 320 of the outdoor unit 300.

[0038] The driving assembly 22 may be disposed between the dry passage 12 and the outdoor unit 300 and between the wet passage 13 and the outdoor unit 300 to transport primary air or secondary air to the outdoor unit 300 to improve transport efficiency.

[0039] As a further embodiment, the pipe assembly 21 includes a first connecting pipe 211, a second connecting pipe 212 and a third connecting pipe 213; the first connecting pipe 211 is connected between the dry channel 12 and the indoor unit 200, the second connecting pipe 212 is connected between the dry channel 12 and the outdoor unit 300 and between the wet channel 13 and the outdoor unit 300, and the third connecting pipe 213 is connected between the water collecting part 11 and the indoor unit 200.

[0040] The pipe assembly 21 may include a first connecting pipe 211 and a second connecting pipe 212, wherein the first connecting pipe 211 is used to connect the dry channel 12 and the indoor unit 200, the second connecting pipe 212 is used to connect the dry channel 12 and the outdoor unit 300 and the wet channel 13 and the outdoor unit 300, and the third connecting pipe 213 is used to connect the indoor unit 200 and the water collecting member 11. When the photovoltaic air conditioner 1000 is operating normally, the primary air in the dry channel 12 enters the indoor unit 200 through the first connecting pipe 211, and forms condensed water under the action of the indoor unit 200, and the formed condensed water enters the water collecting member 11 through the third connecting pipe 213 for storage. At the same time, the secondary air of the wet channel 13 enters the outdoor unit 300 through the second connecting pipe 212, thereby improving the cooling efficiency of the outdoor unit 300. When the photovoltaic air conditioner 1000 is operating at high load, the primary air in the dry channel 12 enters the outdoor unit 300 through the second connecting pipe 212, thereby dissipating heat for the outdoor unit 300.

[0041] As a further embodiment, the connection assembly 20 further includes a control valve 23 , and the control valve 23 is respectively arranged on the first connection pipe 211 and the second connection pipe 212 .

[0042] The control valve 23 is used to control the opening and closing of the pipeline assembly 21. For example, the control valve 23 can be arranged on the first connecting pipeline 211 and the second connecting pipeline 212. Figure 1 As shown, Figure 1 Among them, S1-S4 are all control valves 23, S1 and S2 are switch valves, and S3 and S4 are flow valves. When S1 is turned on, the primary air in the dry channel 12 can enter the indoor unit 200, and when S2 is turned on, the primary air in the dry channel 12 can enter the outdoor unit 300. S3 and S4 are used to control whether the primary air can enter the radiator 320 and the condenser 310. For example, on the basis of S2 being turned on, when S3 is turned on, the primary air in the dry channel 12 enters the radiator 320 to dissipate heat for the radiator 320, when S4 is turned on, the primary air in the dry channel 12 enters the condenser 310 to dissipate heat for the condenser 310, and when S3 and S4 are turned on at the same time, the primary air in the dry channel 12 enters the radiator 320 and the condenser 310 respectively, and dissipates heat for the condenser 310 and the radiator 320 at the same time.

[0043] As a further embodiment, the driving assembly 22 includes a first fan 221 and a second fan 222; the first fan 221 is arranged at the connection between the dry channel 12 and the pipeline assembly 21, and the second fan 222 is arranged at the connection between the wet channel 13 and the pipeline assembly 21.

[0044] Among them, Figure 1 As shown, the first fan 221 is arranged at the outlet of the dry channel 12, and the second fan 222 is arranged at the outlet of the wet channel 13. The first fan 221 is used to transport primary air to the outdoor unit 300, and the second fan 222 is used to transport secondary air to the outdoor unit 300, which can improve the efficiency of transporting primary air and secondary air.

[0045] The present invention also provides a photovoltaic air conditioner 1000, which includes an indoor unit 200, an outdoor unit 300 and the dew-point heat dissipation device 100 described in any one of the above embodiments; the outdoor unit 300 includes a condenser 310 and a radiator 320, and the condenser 310 and the radiator 320 are both connected to the heat dissipation component 10 of the dew-point heat dissipation device 100 through the connecting component 20 of the dew-point heat dissipation device 100; wherein the primary air dissipates heat for the condenser 310 and / or the radiator 320 through the connecting component 20.

[0046] Specifically, the dew-point heat dissipation device 100 includes a heat dissipation component 10 and a connection component 20; the heat dissipation component 10 is used to provide primary air and secondary air, and cool the primary air through the secondary air so that the temperature of the primary air approaches the dew point temperature; one end of the connection component 20 is connected to the heat dissipation component 10, and the other end of the connection component 20 is respectively connected to the outdoor unit 300 and the indoor unit 200 of the photovoltaic air conditioner 1000; wherein the primary air dissipates heat for the outdoor unit 300 through the connection component 20.

[0047] For traditional air conditioners that use photovoltaic power generation to provide electricity, they generally dissipate heat through condensed water or an external water source. The temperature of the condensed water is affected by the cooling effect of the evaporator and the indoor temperature. Its temperature is usually between the dew point temperature and the indoor temperature, that is, the highest temperature of the condensed water can approach the indoor temperature, and the lowest temperature approaches the dew point temperature. The lower the temperature of the condensed water, the better the heat dissipation effect, and the higher the temperature of the condensed water, the worse the heat dissipation effect. Therefore, the heat dissipation effect of the traditional heat dissipation method fluctuates greatly. At the same time, spraying the condensed water directly on the equipment is likely to cause corrosion to the equipment over time, reducing its service life, or requiring additional anti-corrosion devices, resulting in increased costs.

[0048] The photovoltaic air conditioner 1000 provided by the present invention includes an indoor unit 200, an outdoor unit 300 and a dew point heat dissipation device 100. The indoor unit 200 may include an evaporator, the main function of which is to convert liquid refrigerant into gaseous state and absorb heat from the cooled space at the same time. The outdoor unit 300 may include a condenser 310 and a photovoltaic module 330. The main function of the condenser 310 is to cool the high-temperature and high-pressure refrigerant vapor discharged from the compressor to condense it into a liquid state. Its working principle is that after the compressor compresses the refrigerant into high-temperature and high-pressure gas, these gases enter the condenser 310 and exchange heat with the external environment through the pipes or fins of the condenser 310. In this process, the temperature of the refrigerant gas gradually decreases, and the pressure also decreases slightly, and finally condenses into a liquid refrigerant. The photovoltaic module 330 is used to absorb solar energy and convert solar energy into electrical energy to provide kinetic energy for the photovoltaic air conditioner 1000. The specific structure of the photovoltaic module 330 can be any photovoltaic device commonly used in the art, and its specific structure is not limited here.

[0049] The dew point heat dissipation device 100 includes a heat dissipation component 10 and a connection component 20. The heat dissipation component 10 is respectively connected to the indoor unit 200 and the outdoor unit 300 through the connection component 20. The heat dissipation component 10 is mainly used to provide primary air and secondary air for the photovoltaic air conditioner 1000. The primary air refers to the air in the heat dissipation component 10 after the air in the environment enters the heat dissipation component 10, and the secondary air is humid air with moisture, that is, the secondary air can be formed by spraying condensed water on the primary air. The temperature of the secondary air formed is lower than that of the primary air, and the primary air can be cooled by the secondary air so that the temperature of the primary air is reduced to a temperature close to the dew point temperature.

[0050] For example, two receiving parts may be provided, namely a first receiving part and a second receiving part, and the first receiving part and the second receiving part may be connected through a water film. In the initial state, the first receiving part and the second receiving part both contain primary air, and the primary air is obtained by the outside air entering the first receiving part and the second receiving part. Then, condensed water or water from other water sources is sprayed on the second receiving part, so that the sprayed water is mixed with the primary air to obtain secondary air, and the temperature of the obtained secondary air is lower than the temperature of the primary air. At this time, the secondary air in the second receiving part exchanges heat with the primary air in the first receiving part through the water film, so that the temperature of the primary air in the first receiving part is reduced. During the heat exchange process, the temperature of the primary air is reduced, but the humidity remains unchanged. At the same time, the water in the second receiving part evaporates, thereby reducing the temperature of the water film, thereby increasing the heat exchange temperature difference between the first receiving part and the second receiving part. Repeating the above process can reduce the temperature of the primary air to a temperature close to the dew point temperature.

[0051] When the temperature of the condenser 310 or the radiator 320 of the photovoltaic air conditioner 1000 exceeds the corresponding threshold temperature, the primary air in the heat dissipation assembly 10 is sprayed onto the condenser 310 or the radiator 320 through the connection assembly 20 to cool down the condenser 310 and the radiator 320. For example, if the threshold temperature of the condenser 310 is the first preset temperature and the threshold temperature of the radiator 320 is the second preset temperature, temperature sensors may be provided on the condenser 310 and the radiator 320, respectively, to monitor the temperature of the condenser 310 and the radiator 320. When the temperature of the condenser 310 exceeds the first preset temperature, the heat dissipation assembly 10 is connected to the condenser 310 through the connection assembly 20, and the primary air in the heat dissipation assembly 10 is sprayed onto the condenser 310 to cool down the condenser 310. When the temperature of the radiator 320 exceeds the second preset temperature, the heat dissipation assembly 10 is connected to the radiator 320 through the connection assembly 20, and the primary air in the heat dissipation assembly 10 is sprayed onto the radiator 320 to cool down the radiator 320. When the temperature of the condenser 310 exceeds the first preset temperature and the temperature of the radiator 320 exceeds the second preset temperature, the heat dissipation component 10 is connected to the condenser 310 and the radiator 320 respectively, and the primary air of the heat dissipation component 10 is sprayed onto the condenser 310 and the radiator 320 respectively, so as to cool down the condenser 310 and the radiator 320 at the same time.

[0052] See also Figure 2 The present invention also provides a control method, which is applied to a photovoltaic air conditioner and is used to control the heat dissipation of the photovoltaic air conditioner. The control method includes S110-S120.

[0053] S110, confirming the current operating state of the photovoltaic air conditioner.

[0054] In the embodiment of the present invention, the photovoltaic air conditioner can generally be divided into a normal operation state and a high-load operation state during operation. The normal operation state includes a low-load operation state and a standard operation state. In the normal operation state, the power of the photovoltaic air conditioner is relatively small and its temperature is usually relatively low. In the high-load operation state, the power of the photovoltaic air conditioner is relatively large and the temperature is relatively high, and it is necessary to additionally start the dew point heat dissipation device for heat dissipation. Therefore, when the photovoltaic air conditioner is running, the current operation state of the photovoltaic air conditioner can be confirmed according to the power of the photovoltaic air conditioner or according to the temperature of the photovoltaic air conditioner outdoor unit. When the power is high or the temperature is high, the photovoltaic air conditioner is in a high-load operation state.

[0055] S120: If the photovoltaic air conditioner is currently in a high-load operation state, control the heat dissipation component of the dew-point heat dissipation device to be connected to the outdoor unit, so that the primary air of the heat dissipation component dissipates heat for the outdoor unit.

[0056] In an embodiment of the present invention, when the photovoltaic air conditioner is in a normal operating state, the dew-point cooling device may not be started to dissipate heat for the photovoltaic air conditioner. When the photovoltaic air conditioner is in a high-load operating state, the cooling component of the dew-point cooling device is controlled to be connected to the outdoor unit, and the primary air in the cooling component enters the outdoor unit and dissipates heat for the outdoor unit.

[0057] See also Figure 3 In some embodiments, such as in an embodiment of the present invention, step S120 also includes steps S121-S124.

[0058] S121, respectively confirming a first temperature of a condenser of the outdoor unit and a second temperature of a radiator of the outdoor unit;

[0059] S122, if the first temperature is greater than or equal to a first preset temperature, and the second temperature is less than a second preset temperature, controlling the heat dissipation component to be connected to the condenser;

[0060] S123, if the first temperature is lower than the first preset temperature, and the second temperature is higher than or equal to the second preset temperature, controlling the heat dissipation component to be connected to the radiator;

[0061] S124: If the first temperature is greater than or equal to the first preset temperature, and the second temperature is greater than or equal to the second preset temperature, control the heat dissipation component to be connected to the condenser and the radiator respectively.

[0062] In an embodiment of the present invention, the first temperature is the real-time temperature of the condenser, and the second temperature is the real-time temperature of the radiator. When the first temperature is greater than or equal to the first preset temperature, it indicates that the temperature of the condenser is relatively high. When the second temperature is greater than the second preset temperature, it indicates that the temperature of the radiator is relatively high. The connection between the heat dissipation component and the outdoor unit is controlled according to the size of the first temperature and the first preset temperature and the size of the second temperature and the second preset temperature.

[0063] Taking the dew point heat dissipation device provided by the present invention as an example, the dew point heat dissipation device includes a heat dissipation component and a connection component, and the heat dissipation component is respectively connected to the indoor unit and the outdoor unit through the connection component. The heat dissipation component is mainly used to provide primary air and secondary air for the photovoltaic air conditioner. The primary air refers to the air located in the heat dissipation component after the air in the environment enters the heat dissipation component, and the secondary air is humid air with moisture, that is, the secondary air can be formed by spraying condensed water on the primary air. The temperature of the secondary air formed is lower than that of the primary air, and the primary air can be cooled by the secondary air so that the temperature of the primary air is reduced to a temperature close to the dew point temperature. When the temperature of the condenser or radiator of the photovoltaic air conditioner exceeds the respective corresponding threshold temperature, the primary air in the heat dissipation component is sprayed onto the condenser or radiator through the connection component to cool the condenser and the radiator. For example, if the threshold temperature of the condenser is a first preset temperature and the threshold temperature of the radiator is a second preset temperature, temperature sensors can be respectively provided on the condenser and the radiator to monitor the temperature of the condenser and the radiator. When the first temperature of the condenser exceeds the first preset temperature, the heat dissipation component is connected to the condenser through the connecting component, and the primary air in the heat dissipation component is sprayed onto the condenser to cool the condenser. When the second temperature of the radiator exceeds the second preset temperature, the heat dissipation component is connected to the radiator through the connecting component, and the primary air in the heat dissipation component is sprayed onto the radiator to cool the radiator. When the first temperature of the condenser exceeds the first preset temperature and the second temperature of the radiator exceeds the second preset temperature, the heat dissipation component is connected to the condenser and the radiator respectively, and the primary air of the heat dissipation component is sprayed onto the condenser and the radiator respectively, to cool the condenser and the radiator at the same time.

[0064] like Figure 1 As shown, when controlling the connection between the heat dissipation component and the outdoor unit, it can be achieved by setting a control valve. When the photovoltaic air conditioner is in a normal operating state, S1 is turned on and S2 is turned off. When the photovoltaic air conditioner is in a high-load operating state, S1 is turned off and S2 is turned on, and the opening of S3 and S4 is controlled according to the first temperature and the second temperature. Specifically, when the first temperature is greater than or equal to the first preset temperature, S4 is controlled to be turned on. When the second temperature is greater than or equal to the second preset temperature, S3 is controlled to be turned on. When the first temperature is greater than or equal to the first preset temperature and the second temperature is greater than or equal to the second preset temperature, S3 and S4 are controlled to be turned on at the same time.

[0065] See also Figure 4 In some embodiments, such as in an embodiment of the present invention, the control method includes step S130.

[0066] S130: If the current operating state of the photovoltaic air conditioner is a normal operating state, control the heat dissipation component to cool the primary air so that the temperature of the primary air approaches the dew point temperature.

[0067] In the embodiment of the present invention, Figure 1 As shown, when the photovoltaic air conditioner is in normal operation, control S1 is turned on and S2 is turned off, the primary air in the dry channel enters the indoor unit, and condensed water is formed under the action of the indoor unit, and the formed condensed water enters the water collecting part, and the condensed water in the water collecting part is sprayed to the wet channel, and the wet channel generates secondary air to form a water film. The primary air in the dry channel circulates and cools down under the action of the water film until the temperature approaches the dew point temperature, and then the primary air is transported to the indoor unit. Repeating the above process can ensure that the temperature of the primary air is always close to the dew point temperature. When the photovoltaic air conditioner is in high-load operation, the primary air begins to cool the outdoor unit.

[0068] The dew point heat dissipation device, photovoltaic air conditioner and control method disclosed in the present invention can generate primary air and secondary air through a heat dissipation component, reduce the temperature of the primary air to a temperature close to the dew point temperature through the secondary air, and dissipate heat for the outdoor unit through the primary air, thereby avoiding corrosion of the outdoor unit and improving the heat dissipation efficiency.

[0069] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A control method for photovoltaic air conditioning, characterized in that: The photovoltaic air conditioner comprises an indoor unit, an outdoor unit and a dew point heat dissipation device, wherein the outdoor unit comprises a condenser and a radiator; The dew point heat dissipation device comprises a connection component and a heat dissipation component; The heat dissipation assembly includes a water collecting member, a wet channel and a dry channel, wherein the water collecting member is connected to the indoor unit through the connecting assembly and is used to collect condensed water generated by the indoor unit, and the water collecting member is also connected to the wet channel and is used to spray the condensed water into the wet channel so that the wet channel generates secondary air, and the wet channel is connected to the outdoor unit through the connecting assembly; The dry channel is provided with primary air, and the dry channel is connected to the indoor unit and the outdoor unit respectively through the connecting assembly; Wherein, the secondary air is used to cool the primary air so that the temperature of the primary air approaches the dew point temperature, and the primary air is used to dissipate heat for the outdoor unit through the connecting assembly; The condenser and the radiator are both connected to the heat dissipation component of the dew-point heat dissipation device through the connection component of the dew-point heat dissipation device, wherein the primary air dissipates heat for the condenser and / or the radiator through the connection component; The method comprises: Confirming the current operating status of the photovoltaic air conditioner; If the current operating state of the photovoltaic air conditioner is a high-load operating state, controlling the heat dissipation component of the dew-point heat dissipation device to be connected to the outdoor unit, so that the primary air of the heat dissipation component dissipates heat for the outdoor unit; If the photovoltaic air conditioner is currently in a normal operating state, the primary air in the dry channel is controlled to enter the indoor unit, and the heat dissipation component is controlled to cool the primary air so that the temperature of the primary air approaches the dew point temperature.

2. The method according to claim 1, characterized in that The connection assembly includes a pipeline assembly and a drive assembly; The pipeline assembly is respectively connected to the water collecting member, the dry channel, the wet channel, the outdoor unit and the indoor unit; The driving components are respectively arranged at the connection between the pipeline component and the dry channel and at the connection between the pipeline component and the wet channel.

3. The method according to claim 2, characterized in that The pipeline assembly includes a first connecting pipeline, a second connecting pipeline and a third connecting pipeline; The first connecting pipe is connected between the dry channel and the indoor unit, the second connecting pipe is connected between the dry channel and the outdoor unit and between the wet channel and the outdoor unit, and the third connecting pipe is connected between the water collecting member and the indoor unit.

4. The method according to claim 3, characterized in that The connection assembly further includes a control valve, and the control valve is respectively arranged on the first connection pipe and the second connection pipe.

5. The method according to claim 2, characterized in that: The driving assembly includes a first fan and a second fan; The first fan is arranged at the connection between the dry channel and the pipeline assembly, and the second fan is arranged at the connection between the wet channel and the pipeline assembly.

6. The method according to claim 1, characterized in that The step of controlling the heat dissipation component of the dew point heat dissipation device to be connected to the outdoor unit comprises: respectively confirming a first temperature of a condenser of the outdoor unit and a second temperature of a radiator of the outdoor unit; If the first temperature is greater than or equal to a first preset temperature, and the second temperature is less than a second preset temperature, controlling the heat dissipation component to communicate with the condenser, wherein the first preset temperature is a threshold temperature of the condenser, and the second preset temperature is a threshold temperature of the radiator; If the first temperature is lower than the first preset temperature, and the second temperature is higher than or equal to the second preset temperature, controlling the heat dissipation component to be connected to the radiator; If the first temperature is greater than or equal to the first preset temperature, and the second temperature is greater than or equal to the second preset temperature, the heat dissipation component is controlled to be connected to the condenser and the radiator respectively.

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