A photovoltaic-thermal-based air conditioning system

Abstract

The present invention relates to the technical field of solar air conditioners, and particularly relates to an air conditioning system based on photovoltaic and solar thermal energy. First, through the cooperation of a photovoltaic cell module and a circuit control device, the electric energy generated by the photovoltaic cell module is provided for use by the air conditioning device. Secondly, through the cooperation of a heat pipe module and the air conditioning device, the heat pipe module acts as the condenser of the outdoor unit of the air conditioner during the refrigeration process of the air conditioning device, and uses the principle of sky radiation cooling of the heat pipe module for heat dissipation. During the heating process of the air conditioning device, it acts as the evaporator of the outdoor unit of the air conditioner, and uses the heat pipe module to absorb the heat generated by the photovoltaic cell module for heat absorption. Therefore, by simultaneously using the electric energy and thermal energy generated by photovoltaic and solar thermal energy, the technical effect of enabling the air conditioning system to efficiently utilize solar energy throughout the year, ensuring the safe and reliable operation of the air conditioning device, and maximizing the utilization of solar energy resources to achieve energy conservation and emission reduction is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of solar air conditioning, and in particular to an air conditioning system based on photovoltaic and thermal energy. Background Art

[0002] Solar air conditioning is an air conditioning system that uses solar energy as energy.

[0003] Solar energy technology not only helps to reduce dependence on traditional energy and reduce energy consumption, but also has important significance for environmental protection. With the advancement of technology and the reduction of costs, solar air conditioning is expected to be more widely used in the future. Solar air conditioning technology began to develop in the late 1970s, initially as a small absorption refrigeration test prototype. With the continuous improvement of application technologies such as materials, working fluids, process manufacturing, and design of solar collectors and refrigeration systems, the application of solar air conditioning refrigeration devices has been widely used. There are two ways to achieve solar air conditioning. One is to first realize light-to-electricity conversion, and then use electricity to drive conventional compression refrigerators for refrigeration; the other is to use the heat energy of the sun to drive refrigeration. Today, solar air conditioning still faces some challenges. Traditional solar air conditioning only uses the electricity generated by solar energy to directly supply the air conditioning system, but does not use the electricity and heat generated by solar photovoltaic and thermal energy at the same time to achieve efficient energy supply from solar energy throughout the year. Summary of the invention

[0004] In view of this, an object of the present invention is to provide an air-conditioning system based on photovoltaic thermal energy, so as to achieve the technical effect of enabling the air-conditioning system to efficiently utilize solar energy.

[0005] The first aspect of the embodiment of the present invention discloses an air conditioning system based on photovoltaic thermal energy, including an air conditioning device, wherein the air conditioning device includes a throttle valve, an indoor heat exchanger, an electromagnetic four-way valve and a compressor connected in sequence, and the air conditioning system further includes:

[0006] A photovoltaic-thermal integrated device, comprising a photovoltaic cell assembly and a heat pipe assembly, wherein the heat pipe assembly is arranged on the photovoltaic cell assembly;

[0007] A circuit control device, the circuit control device comprising a solar controller and a solar inverter, the solar controller and the solar inverter being electrically connected;

[0008] Wherein, the heat pipe assembly is communicated with the throttle valve and the electromagnetic four-way valve respectively, and the photovoltaic cell assembly is electrically connected with the electromagnetic four-way valve and the compressor respectively through the circuit control device.

[0009] Preferably, the heat pipe assembly comprises:

[0010] A top connecting pipe, one end of the top connecting pipe is communicated with the electromagnetic four-way valve;

[0011] A bottom connecting pipe, one end of the bottom connecting pipe is communicated with the throttle valve;

[0012] Heat pipes, there are several heat pipes, one end of each heat pipe is communicated with the top connecting pipe, and the other end of each heat pipe is communicated with the bottom connecting pipe.

[0013] Preferably, the heat pipes are arranged on one side of the center line between the top connecting pipe and the bottom connecting pipe and the heat pipes are close to the photovoltaic cell module;

[0014] One end of the heat pipe communicated with the top connecting pipe is flush with the lower pipe wall of the top connecting pipe, and one end of the heat pipe communicated with the bottom connecting pipe extends into the bottom connecting pipe and is close to the lower pipe wall of the bottom connecting pipe;

[0015] One side of the inner wall of the heat pipe close to the photovoltaic cell module is the capillary wick surface of the heat pipe, and one side of the inner wall of the heat pipe far from the photovoltaic cell module is the copper wall surface of the heat pipe.

[0016] Preferably, the photovoltaic-thermal integrated device includes a glass cover plate, a first adhesive film, a photovoltaic cell module, a second adhesive film, a first insulating layer, a heat conducting plate, a heat pipe assembly and a second insulating layer which are sequentially arranged from the light side to the backlight side of the photovoltaic-thermal integrated device.

[0017] Preferably, the photovoltaic-thermal integrated device further includes a cooling fan arranged on the backlight side of the photovoltaic-thermal integrated device.

[0018] Preferably, the heat pipe assembly includes several heat pipes, the several heat pipes are uniformly arranged on the heat conducting plate, and the shapes of the several heat pipes are all flat.

[0019] Preferably, the photovoltaic cell module includes several groups of photovoltaic cell packs, the several groups of photovoltaic cell packs are arranged in parallel along a first direction in sequence, each photovoltaic cell pack includes several photovoltaic cells, the several photovoltaic cells are arranged in parallel along a second direction in sequence, and the first direction is perpendicular to the second direction.

[0020] Preferably, the circuit control device further includes: a storage battery, and the storage battery is electrically connected to the photovoltaic cell module through the solar controller.

[0021] Preferably, the circuit control device further includes: a power detection controller, and the power detection controller is electrically connected to the storage battery and the solar controller respectively.

[0022] Preferably, port A of the electromagnetic four-way valve is communicated with the compressor outlet, port B of the electromagnetic four-way valve is communicated with the indoor heat exchanger, port C of the electromagnetic four-way valve is communicated with the compressor inlet, and port D of the electromagnetic four-way valve is communicated with the top connecting pipe.

[0023] First, through the cooperation of the photovoltaic cell module and the circuit control device, the present invention realizes providing the electric energy generated by the photovoltaic cell module for the air conditioner device to use. Secondly, through the cooperation of the heat pipe assembly and the air conditioner device, the heat pipe assembly plays the role of the condenser of the outdoor unit of the air conditioner during the refrigeration process of the air conditioner device, and uses the principle of sky radiation cooling of the heat pipe assembly for heat dissipation. During the heating process of the air conditioner device, it plays the role of the evaporator of the outdoor unit of the air conditioner and absorbs the heat generated by the photovoltaic cell module by using the heat pipe assembly. Therefore, by simultaneously using the electric energy and heat energy generated by photovoltaic and solar thermal, the technical effect of enabling the air conditioning system to efficiently utilize solar energy throughout the year, ensuring the safe and reliable operation of the air conditioner device, and maximizing the utilization of solar energy resources to achieve energy conservation and emission reduction is achieved. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the air conditioning system based on photovoltaic and solar thermal in the refrigeration mode disclosed in an embodiment of the present invention;

[0026] Figure 2 It is a schematic structural diagram of the air conditioning system based on photovoltaic and solar thermal in the heating mode disclosed in an embodiment of the present invention;

[0027] Figure 3 is Figure 1 or Figure 2 a cross-sectional view of the photovoltaic and solar thermal integrated device in

[0028] Figure 4 is Figure 3 a schematic structural diagram of the heat pipe assembly in

[0029] Figure 5 is Figure 4 a schematic structural diagram of the heat pipe assembly from the first perspective in

[0030] Figure 6 is Figure 5 a partial enlarged schematic diagram at E in

[0031] Figure 7 isFigure 5 Partial enlarged schematic view at F in the middle;

[0032] Figure 8 is Figure 4 Schematic structural view of the second perspective of the heat pipe assembly in;

[0033] Figure 9 is Figure 1 or Figure 2 Schematic circuit structure view of the circuit control device in;

[0034] Reference numerals:

[0035] 1 - Photovoltaic - thermal integrated device, 2 - Solar controller, 3 - Solar inverter, 4 - Battery, 5 - Power grid, 6 - Electric wire, 7 - Electromagnetic four - way valve, 8 - Compressor, 9 - Indoor heat exchanger, 10 - Throttle valve, 11 - Connecting pipeline, 12 - Cooling fan, 13 - Glass cover plate, 14 - First adhesive film, 15 - Heat conduction plate, 16 - Photovoltaic cell module, 17 - First insulating layer, 18 - Heat pipe assembly, 19 - Second insulating layer, 20 - Top connecting pipe, 21 - Heat pipe, 22 - Bottom connecting pipe, 23 - Heat pipe copper wall surface, 24 - Heat pipe capillary wick surface, 25 - Power detection controller, 26 - Air - conditioning device. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all 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 protection scope of the present invention.

[0037] In the present invention, the orientation or positional relationship indicated by terms such as "upper", "lower", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation or be constructed and operated in a specific orientation.

[0038] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above - mentioned terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the terms "installed", "set", "provided with", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection;

[0040] It can be a direct connection, or an indirect connection through an intermediate medium, or an internal connection between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, terms such as "first", "second", etc. are mainly used to distinguish different devices, components or parts (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, components or parts. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0042] The inventive concept of the present invention is as follows:

[0043] In the prior art, solar air conditioners only use the electric energy generated by solar energy to directly provide the required electric energy for the air conditioning system, but do not simultaneously utilize the electric energy and heat energy generated by solar photovoltaic-thermal energy, thus having the deficiency of being unable to efficiently utilize solar energy.

[0044] Due to the deficiency of being unable to efficiently utilize solar energy in the prior art, the first technical problem to be solved by the present invention is: how to achieve the simultaneous utilization of the electric energy and heat energy generated by solar photovoltaic-thermal energy. The present invention realizes the simultaneous utilization of the electric energy and heat energy generated by photovoltaic-thermal energy through the cooperation of the flow path and circuit among the air conditioning device, the photovoltaic-thermal integrated device, and the circuit control device, achieving the technical effect of enabling the air conditioning system to efficiently utilize solar energy throughout the year, ensuring the safe and reliable operation of the air conditioning device, and maximizing the utilization of solar energy resources to achieve energy conservation and emission reduction.

[0045] Specifically:

[0046] Please refer to Figures 1 to 2 As shown, the air conditioning system based on photovoltaic-thermal energy proposed in the first embodiment of the present invention includes an air conditioning device 26. The air conditioning device 26 includes a throttle valve 10, an indoor heat exchanger 9, an electromagnetic four-way valve 7, and a compressor 8 that are connected in sequence. The air conditioning system further includes: a photovoltaic-thermal integrated device 1, the photovoltaic-thermal integrated device 1 includes a photovoltaic cell module 16 and a heat pipe assembly 18, and the heat pipe assembly 18 is disposed on the photovoltaic cell module 16; a circuit control device, the circuit control device includes a solar controller 2 and a solar inverter 3, and the solar controller 2 and the solar inverter 3 are electrically connected; wherein, the heat pipe assembly 18 is respectively connected to the throttle valve 10 and the electromagnetic four-way valve 7, and the photovoltaic cell module 16 is electrically connected to the electromagnetic four-way valve 7 and the compressor 8 respectively through the circuit control device.

[0047] Specifically, to ensure the flow of the refrigerant in the air-conditioning system, the flow path structure (i.e., the flow path of the refrigerant) in this embodiment includes one end of the throttle valve 10 being connected to one end of the indoor heat exchanger 9 through the connecting pipe 11, the other end of the throttle valve 10 being connected to the heat pipe assembly 18 through the connecting pipe 11, the other end of the indoor heat exchanger 9 being connected to port B of the electromagnetic four-way valve 7 through the connecting pipe 11, port A of the electromagnetic four-way valve 7 being connected to the outlet of the compressor 8 through the connecting pipe 11, port C of the electromagnetic four-way valve 7 being connected to the inlet of the compressor 8 through the connecting pipe 11, and port D of the electromagnetic four-way valve 7 being connected to the heat pipe assembly 18 through the connecting pipe 11;

[0048] To ensure the transmission of electric energy, the circuit structure in this embodiment includes the solar controller 2 and the solar inverter 3 being electrically connected through the wire 6, the photovoltaic cell module 16 being electrically connected to one end of the solar controller 2 through the wire 6, and one end of the solar inverter 3 being electrically connected to the electromagnetic four-way valve 7 and the compressor 8 respectively through the wire 6.

[0049] In this embodiment, first, the photovoltaic cell module 16 is electrically connected to the electromagnetic four-way valve 7 and the compressor 8 respectively through the circuit control device, and by setting the circuit control device mainly composed of the solar controller 2 (such as an MPPT controller) and the solar inverter 3, when receiving light, the photovoltaic cell module 16 can convert solar energy into electric energy by using the photovoltaic effect. The direct current generated by the photovoltaic cell module 16 can be processed by the solar controller 2 and the solar inverter 3 and then converted into alternating current to directly drive the electromagnetic four-way valve 7 and the compressor 8 in the air-conditioning device 26 to work;

[0050] Secondly, by connecting the heat pipe assembly 18 to the throttle valve 10 and the electromagnetic four-way valve 7 respectively, it can act as the condenser of the outdoor unit of the air conditioner during the refrigeration process of the air-conditioning device 26, realizing the function of dissipating heat and condensing the high-temperature and high-pressure gaseous refrigerant. Specifically: the low-temperature and low-pressure liquid refrigerant is changed into a low-temperature and low-pressure gaseous refrigerant through the heat absorption and heat release of the indoor heat exchanger 9. The low-temperature and low-pressure gaseous refrigerant enters the compressor 8 through the electromagnetic four-way valve 7 and becomes a high-temperature and high-pressure gaseous refrigerant through the compressor 8. The high-temperature and high-pressure gaseous refrigerant enters the heat pipe assembly 18 through the electromagnetic four-way valve 7. The heat pipe assembly 18 uses the principle of sky radiation refrigeration to dissipate the heat of the high-temperature and high-pressure gaseous refrigerant and condense it into a high-temperature and high-pressure liquid refrigerant. The high-temperature and high-pressure liquid refrigerant becomes a low-temperature and low-pressure liquid refrigerant after passing through the throttle valve 10, and the low-temperature and low-pressure liquid refrigerant continues to enter the air-conditioning device 26 to continue the refrigeration cycle.

[0051] Meanwhile, during the heating process of the air-conditioning device 26, it can act as the evaporator of the outdoor unit of the air conditioner, realizing the function of absorbing heat from the refrigerant in the low-temperature and low-pressure liquid state. Specifically, the refrigerant in the low-temperature and low-pressure gaseous state enters the compressor 8 through the electromagnetic four-way valve 7. The compressor 8 converts the refrigerant in the low-temperature and low-pressure gaseous state into the refrigerant in the high-temperature and high-pressure gaseous state. The refrigerant in the high-temperature and high-pressure gaseous state enters the indoor heat exchanger 9 through the electromagnetic four-way valve 7. After absorbing cold and releasing heat through the indoor heat exchanger 9, the refrigerant in the high-temperature and high-pressure gaseous state changes into the refrigerant in the high-temperature and high-pressure liquid state. The refrigerant in the high-temperature and high-pressure liquid state becomes the refrigerant in the low-temperature and low-pressure liquid state after passing through the throttle valve 10. The refrigerant in the low-temperature and low-pressure liquid state enters the heat pipe assembly 18, absorbs the heat generated by the photovoltaic cell module 16 by the heat pipe assembly 18, and changes into the refrigerant in the low-temperature and low-pressure gaseous state. The refrigerant in the low-temperature and low-pressure gaseous state continues to enter the air-conditioning device 26 to continue the heating cycle.

[0052] In summary, in this embodiment, first, through the cooperation of the photovoltaic cell module 16 and the circuit control device, the electric energy generated by the photovoltaic cell module 16 is provided for the air-conditioning device 26 to use. Second, through the cooperation of the heat pipe assembly 18 and the air-conditioning device 26, the heat pipe assembly 18 acts as the condenser of the outdoor unit of the air conditioner during the refrigeration process of the air-conditioning device 26, and uses the principle of sky radiation cooling of the heat pipe assembly 18 to dissipate heat. During the heating process of the air-conditioning device 26, the heat pipe assembly 18 acts as the evaporator of the outdoor unit of the air conditioner, and uses the heat pipe assembly 18 to absorb the heat generated by the photovoltaic cell module 16 to absorb heat. By simultaneously using the electric energy and heat energy generated by photovoltaic and solar thermal, the technical effect of enabling the air-conditioning system to efficiently utilize solar energy is achieved.

[0053] As Figure 4 shown, in order to enable the heat pipe assembly to exchange heat with the refrigerant, the second embodiment of the present invention proposes a photovoltaic and solar thermal-based air-conditioning system. On the basis of the first embodiment, the heat pipe assembly 18 includes a top connecting pipe 20, one end of the top connecting pipe 20 is communicated with the electromagnetic four-way valve 7; a bottom connecting pipe 22, one end of the bottom connecting pipe 22 is communicated with the throttle valve 10; heat pipes 21, there are several heat pipes 21, one end of each heat pipe 21 is communicated with the top connecting pipe 20, and the other end of each heat pipe 21 is communicated with the bottom connecting pipe 22.

[0054] In this embodiment, first, by setting one end of the top connecting pipe 20 to be communicated with the electromagnetic four-way valve 7, one end of the bottom connecting pipe 22 to be communicated with the throttle valve 10, and connecting the two ends of the heat pipe 21 to the top connecting pipe 20 and the bottom connecting pipe 22 respectively, the refrigerant flowing in the air-conditioning device 26 can be introduced into the heat pipe 21. Through the heat transfer effect of the heat pipe 21, it can dissipate heat from the refrigerant in the high-temperature and high-pressure gaseous state during the refrigeration of the air-conditioning device, and absorb heat from the refrigerant in the low-temperature and low-pressure liquid state during the heating of the air-conditioning device.

[0055] As Figures 5 - 9 shown, in order to make it more conducive to the reflux of high-temperature and high-pressure liquid refrigerant when the heat pipe assembly is used as the condenser of the outdoor unit of the air conditioner, and more conducive to the evaporation of the refrigerant in the gas-liquid mixed state when the heat pipe assembly is used as the evaporator of the outdoor unit of the air conditioner, the third embodiment of the present invention proposes a photovoltaic-thermal-based air conditioning system, and on the basis of the second embodiment, further includes: The heat pipe 21 is arranged on one side of the center line between the top connecting pipe 20 and the bottom connecting pipe 22 (specifically, as shown by the dotted line indicated by G in Figure 8 ), and the heat pipe 21 is close to the photovoltaic cell module 16;

[0056] One end of the heat pipe 21 communicating with the top connecting pipe 20 is flush with the lower pipe wall of the top connecting pipe 20, and one end of the heat pipe 21 communicating with the bottom connecting pipe 22 extends into the bottom connecting pipe 22 and is close to the lower pipe wall of the bottom connecting pipe 22;

[0057] One side of the inner wall of the heat pipe 21 close to the photovoltaic cell module 16 is the heat pipe capillary wick surface 24. Specifically, the heat pipe capillary wick surface 24 is provided with a capillary wick on the inner wall surface of the heat pipe 21. The side of the inner wall of the heat pipe 21 away from the photovoltaic cell module 16 is the heat pipe copper wall surface 23. Specifically, the heat pipe copper wall surface 23 is a smooth surface made of copper on the inner wall surface of the heat pipe 21.

[0058] In this embodiment, since the photovoltaic and optoelectronic integration device is inclined during use, the heat pipe 21 is also in an inclined state during use. At the same time, in order to better set the outer wall surface of the heat pipe 21 with the heat pipe capillary wick surface 24 to be close to the photovoltaic cell module 16, first, the position of the heat pipe 21 is set at the center line between the top connecting pipe 20 and the bottom connecting pipe 22 and on the side close to the photovoltaic cell module 16 and has a certain arc; thereby making the position of the heat pipe 21 closer to the photovoltaic cell module 16. Secondly, one side of the inner wall of the heat pipe 21 close to the above-mentioned photovoltaic cell module 16 is set as the heat pipe capillary wick surface 24, so that the outer wall surface of the heat pipe 21 with the heat pipe capillary wick surface 24 can better adhere to the photovoltaic cell module 16;

[0059] Meanwhile, the lower end of the heat pipe 21 is set to extend into the bottom connection pipe 22 and be close to the lower pipe wall of the bottom connection pipe 22. And the side of the inner wall of the heat pipe 21 away from the photovoltaic cell module 16 is set as the copper wall surface 23 of the heat pipe. In this way, during the refrigeration process of the air-conditioning device, the high-temperature and high-pressure gaseous refrigerant enters the heat pipe 21 from the top connection pipe 20. After the high-temperature and high-pressure gaseous refrigerant passes through the condensation section of the heat pipe 21 and is cooled by using the principle of space radiation refrigeration, the high-temperature and high-pressure gaseous refrigerant is condensed into a high-temperature and high-pressure liquid refrigerant. Since the photovoltaic and optoelectronic integrated device is inclined during use, the heat pipe 21 is also in an inclined state during use. Therefore, the high-temperature and high-pressure liquid refrigerant can flow better towards the bottom connection pipe 22 under the action of gravity through the inclined heat pipe 21 and the copper wall surface 23 of the heat pipe. At the same time, because the lower end of the heat pipe 21 is set to extend into the bottom connection pipe 22 and be close to the lower pipe wall of the bottom connection pipe 22, the high-temperature and high-pressure liquid refrigerant can better enter the bottom connection pipe 22 through the part of the lower end of the heat pipe 21 extending into the bottom connection pipe 22 and then flow back to the air-conditioning device 26, so as to flow back to the air-conditioning device faster and continue the refrigeration cycle;

[0060] Secondly, the upper end of the heat pipe 21 is set to be flush with the lower pipe wall of the top connection pipe 20. And the side of the inner wall of the heat pipe 21 close to the photovoltaic cell module 16 is set as the capillary wick surface 24 of the heat pipe. Moreover, the position where the heat pipe 21 assembly is set can make the capillary wick surface 24 of the heat pipe better close to the photovoltaic cell module 16. In this way, during the heating process of the air-conditioning device 26, the low-temperature and low-pressure liquid refrigerant enters the capillary wick surface 24 of the evaporation section of the heat pipe 21 through the bottom connection pipe 22 under the action of capillary force. Since the capillary wick surface 24 of the heat pipe is close to the photovoltaic cell module 16, it can absorb the accumulated heat of the photovoltaic cell module 16 faster, so as to provide more heat to the refrigerant and make it evaporate rapidly into a low-temperature and low-pressure gaseous refrigerant. At the same time, because the upper end of the heat pipe 21 is set to be flush with the lower pipe wall of the top connection pipe 20, the resistance when the low-temperature and low-pressure gaseous refrigerant enters the top connection pipe 20 is very small, and it can enter the air-conditioning device faster through the top connection pipe 20 and continue the heating cycle.

[0061] Such as Figure 3As shown, in order to better achieve the photovoltaic-thermal effect in the photovoltaic-thermal integrated device, a fourth embodiment of the present invention proposes a photovoltaic-thermal-based air conditioning system. Based on the second or third embodiment, the photovoltaic-thermal integrated device 1 includes a glass cover plate 13, a first adhesive film 14, a photovoltaic cell module 16, a second adhesive film, a first insulating layer 17, a heat conducting plate 15, a heat pipe assembly 18, and a second insulating layer 19, which are arranged in sequence from the light-facing side to the light-backing side of the photovoltaic-thermal integrated device 1. Specifically, the light-facing side of the photovoltaic-thermal integrated device 1 refers to the side facing the sun in the working state of the photovoltaic-thermal integrated device 1, and the light-backing side of the photovoltaic-thermal integrated device 1 refers to the side facing away from the sun in the working state of the photovoltaic-thermal integrated device 1. By using the heat conducting plate 15 (preferably an aluminum plate) as the substrate, the top layer is the glass cover plate 13, and the glass cover plate 13 is adhered to the photovoltaic cell module 16 through the first adhesive film 14 (preferably an EVA adhesive film). The photovoltaic cell module 16 is adhered through the second adhesive film (preferably an EVA adhesive film) and the first insulating layer 17 (preferably a TPT insulating layer, which is a back film composed of three layers of films: PVF (polyvinyl fluoride film)-PET (polyester film)-PVF. The outer protective layer PVF has good resistance to environmental erosion, the middle layer is a polyester film with good insulation performance, and the inner layer PVF has good adhesion performance with EVA after surface treatment), thereby completing the encapsulation, and then pressing it on the heat conducting plate 15 (preferably an aluminum plate). The heat pipe assembly 18 is adhered to the heat conducting plate 15 (preferably an aluminum plate) through heat conducting silicone, and there is a second insulating layer 19 outside the evaporation section of the heat pipe assembly 18.

[0062] In this embodiment, the photovoltaic-thermal integrated device 1 composed of the glass cover plate 13, the first adhesive film 14, the photovoltaic cell module 16, the second adhesive film, the first insulating layer 17, the heat conducting plate 15, the heat pipe assembly 18, and the second insulating layer 19 enables the photovoltaic-thermal integrated device to have good light transmittance and stability, thereby enabling the photovoltaic-thermal integrated device 1 to better achieve the photovoltaic-thermal effect.

[0063] As Figure 1 or Figure 2 As shown, in order to better dissipate heat from the photovoltaic-thermal integrated device, a fifth embodiment of the present invention proposes a photovoltaic-thermal-based air conditioning system. Based on the fourth embodiment, the photovoltaic-thermal integrated device 1 further includes a cooling fan 12 arranged on the light-backing side of the photovoltaic-thermal integrated device 1. Specifically, the cooling fan 12 is electrically connected to the photovoltaic cell module 16 through a wire 6 via a solar controller 2 and a solar inverter 3.

[0064] In this embodiment, by setting up the cooling fan 12, the cooling effect of the cooling fan 12 can better dissipate heat from the photovoltaic-thermal integrated device 1 during its operation. At the same time, when the photovoltaic-thermal integrated device 1 is not working, it can also assist in dissipating heat from the high-temperature and high-pressure gaseous refrigerant in the heat pipe 21 during the air-conditioning refrigeration process on summer nights.

[0065] As Figure 3 shown, in order to enable the heat pipe assembly to have better heat absorption capacity, the sixth embodiment of the present invention proposes a photovoltaic-thermal-based air-conditioning system. On the basis of the fourth embodiment, the heat pipe assembly 18 includes a plurality of heat pipes 21, and the plurality of heat pipes 21 are uniformly arranged on the heat conduction plate 15. The shapes of the plurality of heat pipes 21 are all flat. Specifically, the flat shape means that the upper wall and the lower wall of the heat pipe 21 are parallel to the horizontal plane.

[0066] In this embodiment, the evaporation section of the heat pipe 21 can better fit on the back of the heat conduction plate 15, increasing the contact area between the heat pipe 21 and the heat conduction plate 15, and achieving a better heat exchange purpose.

[0067] In order to improve the light absorption performance of the photovoltaic cell module, the seventh embodiment of the present invention proposes a photovoltaic-thermal-based air-conditioning system. On the basis of the fourth embodiment, the photovoltaic cell module 16 includes a plurality of groups of photovoltaic cell packs, and the plurality of groups of photovoltaic cell packs are arranged in parallel along the first direction in sequence. Each photovoltaic cell pack includes a plurality of photovoltaic cells, and the plurality of photovoltaic cells are arranged in parallel along the second direction in sequence, and the first direction is perpendicular to the second direction.

[0068] In this embodiment, through the above arrangement of the photovoltaic cells, more photovoltaic cells can be arranged as much as possible in a limited space, thereby improving the light absorption performance of the photovoltaic cell module.

[0069] As Figure 9 shown, in order to improve the utilization rate of the electric energy generated by the photovoltaic power generation of the photovoltaic-thermal integrated device, the eighth embodiment of the present invention proposes a photovoltaic-thermal-based air-conditioning system. On the basis of the first embodiment, the circuit control device further includes: a storage battery 4, and the storage battery 4 is electrically connected to the photovoltaic cell module 16 through a solar controller 2.

[0070] In this embodiment, by setting up the storage battery 4, the redundant electric energy generated by the photovoltaic-thermal integrated device 1 can be transmitted to the storage battery 4 through the solar controller 2 for storage, thereby improving the utilization rate of the electric energy generated by the photovoltaic power generation of the photovoltaic-thermal integrated device.

[0071] As Figure 9As shown, in order to further improve the utilization rate of electrical energy generated by photovoltaic power generation of the photovoltaic-thermal integrated device, the ninth embodiment of the present invention proposes a photovoltaic-thermal-based air conditioning system. On the basis of the eighth embodiment, the circuit control device further includes: a power detection controller 25, and the power detection controller 25 is electrically connected to the storage battery 4 and the solar controller 2 respectively.

[0072] In this embodiment, by setting the power detection controller 25, the power stored in the storage battery 4 can be monitored in real time, so that the redundant electrical energy generated by the photovoltaic-thermal integrated device 1 can be better scheduled to the storage battery 4 or the power grid 5 through the solar controller 2, thereby further improving the utilization rate of electrical energy generated by photovoltaic power generation of the photovoltaic-thermal integrated device.

[0073] As Figure 1 shown in FIG. 1 or FIG. 2, in order to control the flow direction of the refrigerant, the tenth embodiment of the present invention proposes a photovoltaic-thermal-based air conditioning system. On the basis of the first embodiment, port A of the electromagnetic four-way valve 7 is communicated with the outlet of the compressor 8, port B of the electromagnetic four-way valve 7 is communicated with the indoor heat exchanger 9, port C of the electromagnetic four-way valve 7 is communicated with the inlet of the compressor 8, and port D of the electromagnetic four-way valve is communicated with the top connecting pipe 20.

[0074] In this embodiment, during the refrigeration process in summer of the air conditioning device 26, the electromagnetic four-way valve 7 is in a non-energized state, port A of the electromagnetic four-way valve 7 is communicated with port D of the electromagnetic four-way valve 7, and port B of the electromagnetic four-way valve 7 is communicated with port C of the electromagnetic four-way valve 7. The low-temperature and low-pressure liquid refrigerant becomes a low-temperature and low-pressure gaseous refrigerant after absorbing heat and releasing cold through the indoor heat exchanger 9. The low-temperature and low-pressure gaseous refrigerant enters the compressor 8 through port B and port C of the electromagnetic four-way valve 7, and becomes a high-temperature and high-pressure gaseous refrigerant after being processed by the compressor 8. The high-temperature and high-pressure gaseous refrigerant enters the heat pipe assembly 18 through port A and port D of the electromagnetic four-way valve 7. During the heating process in winter of the air conditioning device 26, the electromagnetic four-way valve 7 is in an energized state, port A of the electromagnetic four-way valve 7 is communicated with port B of the electromagnetic four-way valve 7, and port C of the electromagnetic four-way valve 7 is communicated with port D of the electromagnetic four-way valve 7. The low-temperature and low-pressure gaseous refrigerant enters the compressor 8 through port D and port C of the electromagnetic four-way valve 7, and the compressor 8 converts the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant enters the indoor heat exchanger 9 through port A and port B of the electromagnetic four-way valve 7. Therefore, by the conduction of different ports of the electromagnetic four-way valve 7, the flow direction of the refrigerant is controlled.

[0075] As Figure 1 、 Figure 2 and Figure 9 shown, wherein Figure 1 and Figure 2The arrow in it indicates the flow direction of the refrigerant. The working principle of the photovoltaic-thermal-based air conditioning system disclosed in this embodiment is as follows:

[0076] First, using the photovoltaic effect of the photovoltaic cell module 16, under sufficient light conditions, the direct current generated by the photovoltaic cell module 16 first passes through the control of the solar controller 2 (for example, an MPPT controller, whose full name is Maximum Power Point Tracking controller) and always operates at the maximum power point to generate the maximum electrical energy. Then, it is converted into alternating current through the solar inverter 3 and directly drives the electrical consumption of the electrical consumption end in the air conditioning system (for example, the electromagnetic four-way valve 7, the compressor 8, and the cooling fan 12). At the same time, the excess electrical energy generated by the photovoltaic cell module 16 is stored in the storage battery 4 or directly incorporated into the power grid 5. Under insufficient light conditions, the storage battery 4 or the power grid 5 is used to meet the electrical consumption requirements of the electrical consumption end in the air conditioning system (for example, the electromagnetic four-way valve 7, the compressor 8, and the cooling fan 12), thereby making full use of the electrical energy generated by the photovoltaic cell module 16 and achieving the goal of energy conservation and emission reduction. All current transmissions are carried out through the wire 6;

[0077] Secondly, during the refrigeration process of the air conditioning device 26 in summer (the specific refrigeration principle of the air conditioning device 26 is the existing principle in this field and will not be elaborated here), the electromagnetic four-way valve 7 is in a non-powered state. The port A of the electromagnetic four-way valve 7 is connected to the port D of the electromagnetic four-way valve 7, and the port B of the electromagnetic four-way valve 7 is connected to the port C of the electromagnetic four-way valve 7. The low-temperature and low-pressure liquid refrigerant becomes a low-temperature and low-pressure gaseous refrigerant after absorbing heat and releasing cold through the indoor heat exchanger 9. The low-temperature and low-pressure gaseous refrigerant enters the compressor 8 through the port B and port C of the electromagnetic four-way valve 7. After being processed by the compressor 8, it becomes a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant enters the heat pipe assembly 18 through the port A and port D of the electromagnetic four-way valve 7. The heat pipe assembly 18 uses the principle of sky radiation refrigeration (that is, using the temperature difference between the photovoltaic-thermal integrated device 1 and the external environment at night in summer to dissipate the heat of the high-temperature and high-pressure gaseous refrigerant in the form of infrared radiation through the atmospheric window (8-13μm band) to the external environment) to dissipate the heat of the high-temperature and high-pressure gaseous refrigerant and condense it into a high-temperature and high-pressure liquid refrigerant. The high-temperature and high-pressure liquid refrigerant becomes a low-temperature and low-pressure liquid refrigerant after passing through the throttle valve 10. The low-temperature and low-pressure liquid refrigerant continues to enter the air conditioning device 26 for refrigeration cycle. It can be seen that during the refrigeration process of the air conditioning device 26, the heat pipe assembly 18 acts as the condenser of the outdoor unit of the air conditioner during the refrigeration process of the air conditioning device 26, realizing the function of dissipating heat from the high-temperature and high-pressure gaseous refrigerant;

[0078] Finally, during the heating process in winter of the air conditioner device 26 (specifically, the heating principle of the air conditioner device 26 is an existing principle in the art and will not be elaborated here), the electromagnetic four-way valve 7 is in an energized state. The port A of the electromagnetic four-way valve 7 is communicated with the port B of the electromagnetic four-way valve 7, and the port C of the electromagnetic four-way valve 7 is communicated with the port D of the electromagnetic four-way valve 7. The low-temperature and low-pressure gaseous refrigerant enters the compressor 8 through the port D and port C of the electromagnetic four-way valve 7. The compressor 8 converts the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant enters the indoor heat exchanger 9 through the port A and port B of the electromagnetic four-way valve 7. After the high-temperature and high-pressure gaseous refrigerant absorbs cold and releases heat through the indoor heat exchanger 9, it is phase-changed into a high-temperature and high-pressure liquid refrigerant. The high-temperature and high-pressure liquid refrigerant becomes a low-temperature and low-pressure liquid refrigerant after passing through the throttle valve 10. The low-temperature and low-pressure liquid refrigerant enters the heat pipe assembly 18 and absorbs the heat generated by the photovoltaic cell assembly 16 by the heat pipe assembly 18 and is phase-changed into a low-temperature and low-pressure gaseous refrigerant. The low-temperature and low-pressure gaseous refrigerant continues to enter the air conditioner device 26 for a heating cycle. It can be seen that during the heating process of the air conditioner device 26, the heat pipe assembly 18 acts as an evaporator of the outdoor unit of the air conditioner during the heating process of the air conditioner device 26, realizing the function of absorbing heat from the low-temperature and low-pressure liquid refrigerant.

[0079] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key point of each embodiment is to illustrate the differences from other embodiments. 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 modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the rights of the present invention.

Claims

1. A photovoltaic-thermal-based air conditioning system, comprising an air conditioning device (26), the air conditioning device (26) including a throttle valve (10), an indoor heat exchanger (9), an electromagnetic four-way valve (7), and a compressor (8) that are connected in sequence, characterized in that, The air-conditioning system further includes: a photovoltaic-thermal integrated device (1), the photovoltaic-thermal integrated device (1) includes a photovoltaic cell module (16) and a heat pipe assembly (18), and the heat pipe assembly (18) is arranged on the photovoltaic cell module (16); a circuit control device, the circuit control device includes a solar controller (2) and a solar inverter (3), and the solar controller (2) and the solar inverter (3) are electrically connected; wherein, the heat pipe assembly (18) is respectively communicated with the throttle valve (10) and the electromagnetic four-way valve (7), and the photovoltaic cell module (16) is electrically connected with the electromagnetic four-way valve (7) and the compressor (8) respectively through the circuit control device; The heat pipe assembly (18) includes: a top connection pipe (20), one end of the top connection pipe (20) is communicated with the electromagnetic four-way valve (7); a bottom connection pipe (22), one end of the bottom connection pipe (22) is communicated with the throttle valve (10); heat pipes (21), there are several heat pipes (21), one end of each heat pipe (21) is communicated with the top connection pipe (20), and the other end of each heat pipe (21) is communicated with the bottom connection pipe (22); the heat pipes (21) are arranged on one side of the center line between the top connection pipe (20) and the bottom connection pipe (22) and the heat pipes (21) are close to the photovoltaic cell module (16); the end of the heat pipe (21) communicated with the top connection pipe (20) is flush with the lower pipe wall of the top connection pipe (20), and the end of the heat pipe (21) communicated with the bottom connection pipe (22) extends into the bottom connection pipe (22) and is close to the lower pipe wall of the bottom connection pipe (22); the side of the inner wall of the heat pipe (21) close to the photovoltaic cell module (16) is a heat pipe capillary wick surface (24), and the side of the inner wall of the heat pipe (21) far from the photovoltaic cell module (16) is a heat pipe copper wall surface (23).

2. The air-conditioning system based on photovoltaic and solar thermal according to claim 1, wherein The photovoltaic-thermal integrated device (1) includes a glass cover plate (13), a first adhesive film (14), a photovoltaic cell module (16), a second adhesive film, a first insulating layer (17), a heat conducting plate (15), a heat pipe assembly (18) and a second insulating layer (19) which are sequentially arranged from the light side to the backlight side of the photovoltaic-thermal integrated device (1).

3. The air conditioning system based on photovoltaic and solar thermal according to claim 2, characterized in that The photovoltaic-thermal integrated device (1) further includes a cooling fan (12) arranged on the backlight side of the photovoltaic-thermal integrated device (1).

4. The air conditioning system based on photovoltaic and solar thermal according to claim 2, characterized in that The heat pipe assembly (18) includes several heat pipes (21), the several heat pipes (21) are uniformly arranged on the heat conducting plate (15), and the shapes of the several heat pipes (21) are all flat.

5. The air conditioning system based on photovoltaic and solar thermal according to claim 2, characterized in that The photovoltaic cell module (16) includes a plurality of groups of photovoltaic cell packs, and the plurality of groups of photovoltaic cell packs are arranged in parallel in sequence along a first direction. Each photovoltaic cell pack includes a plurality of photovoltaic cells, and the plurality of photovoltaic cells are arranged in parallel in sequence along a second direction, and the first direction is perpendicular to the second direction.

6. The air-conditioning system based on photovoltaic and solar thermal according to claim 1, wherein, The circuit control device further includes: a storage battery (4), and the storage battery (4) is electrically connected to the photovoltaic cell module (16) through the solar energy controller (2).

7. The air conditioning system based on photovoltaic and solar thermal according to claim 6, wherein, The circuit control device further includes: a power detection controller (25), and the power detection controller (25) is electrically connected to the storage battery (4) and the solar energy controller (2) respectively.

8. The air conditioning system based on photovoltaic and solar thermal according to claim 1, characterized in that, Port A of the electromagnetic four-way valve (7) is communicated with the outlet of the compressor (8), port B of the electromagnetic four-way valve (7) is communicated with the indoor heat exchanger (9), port C of the electromagnetic four-way valve (7) is communicated with the inlet of the compressor (8), and port D of the electromagnetic four-way valve is communicated with the top connecting pipe (20).

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