Air conditioning system based on photovoltaic photo-thermal

Abstract

The invention relates to the technical field of solar air conditioners, in particular to an air conditioning system based on photovoltaic and photo-thermal, firstly, electric energy generated by a photovoltaic cell assembly is provided for an air conditioning device for use through cooperation of the photovoltaic cell assembly and a circuit control device, and secondly, electric energy generated by the photovoltaic cell assembly is provided for the air conditioning device for use through cooperation of a heat pipe assembly and the air conditioning device. The heat pipe assembly plays a role of an air conditioner outdoor unit condenser in the refrigeration process of the air conditioner device, the heat pipe assembly is used for dissipating heat through the sky radiation refrigeration principle, the heat pipe assembly plays a role of an air conditioner outdoor unit evaporator in the heating process of the air conditioner device, and the heat pipe assembly is used for absorbing heat generated by the photovoltaic cell assembly. Therefore, by simultaneously utilizing the electric energy and the heat energy generated by photovoltaic and photo-thermal, the technical effects that the air conditioning system efficiently utilizes solar energy all year round, safe and reliable operation of the air conditioning device is guaranteed, and solar energy resources are utilized to the greatest extent so as to realize energy conservation and emission reduction are 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. As a renewable energy technology, solar air conditioning 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

[0003] 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.

[0004] 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:

[0005] 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;

[0006] 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;

[0007] 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.

[0008] Preferably, the heat pipe assembly comprises:

[0009] A top connecting pipe, one end of which is connected to the electromagnetic four-way valve;

[0010] A bottom connecting pipe, one end of which is connected to the throttle valve;

[0011] The heat pipes include a plurality of heat pipes, one end of each heat pipe is connected to the top connecting pipe, and the other end of each heat pipe is connected to the bottom connecting pipe.

[0012] Preferably, the heat pipe is arranged on one side of the center line between the top connecting pipe and the bottom connecting pipe and the heat pipe is close to the photovoltaic cell assembly;

[0013] One end of the heat pipe communicating with the top connecting pipe is flush with the lower pipe wall of the top connecting pipe, and one end of the heat pipe communicating with the bottom connecting pipe extends into the bottom connecting pipe and is close to the lower pipe wall of the bottom connecting pipe;

[0014] The side of the inner wall of the heat pipe close to the photovoltaic cell assembly is the heat pipe capillary liquid absorption core surface, and the side of the inner wall of the heat pipe away from the photovoltaic cell assembly is the heat pipe copper wall surface.

[0015] Preferably, the photovoltaic-thermal integrated device includes a glass cover plate, a first adhesive film, a photovoltaic cell assembly, a second adhesive film, a first insulating layer, a heat conducting plate, a heat pipe assembly and a second insulating layer, which are arranged in sequence from the light side of the photovoltaic-thermal integrated device to the backlight side of the photovoltaic-thermal integrated device.

[0016] Preferably, the photovoltaic-thermal integrated device further comprises a heat dissipation fan arranged on the backlight side of the photovoltaic-thermal integrated device.

[0017] Preferably, the heat pipe assembly includes a plurality of heat pipes, the plurality of heat pipes are evenly arranged on the heat conducting plate, and the plurality of heat pipes are flat in shape.

[0018] Preferably, the photovoltaic cell assembly includes a plurality of photovoltaic cell packs, which are arranged in parallel in sequence along a first direction; the photovoltaic cell pack includes a plurality of photovoltaic cell sheets, which are arranged in parallel in sequence along a second direction, and the first direction is perpendicular to the second direction.

[0019] Preferably, the circuit control device further comprises: a battery, and the battery is electrically connected to the photovoltaic cell assembly through the solar controller.

[0020] Preferably, the circuit control device further comprises: a power detection controller, and the power detection controller is electrically connected to the battery and the solar controller respectively.

[0021] Preferably, port A of the electromagnetic four-way valve is connected to the compressor outlet, port B of the electromagnetic four-way valve is connected to the indoor heat exchanger, port C of the electromagnetic four-way valve is connected to the compressor inlet, and port D of the electromagnetic four-way valve is connected to the top connecting pipe.

[0022] The present invention firstly realizes that the electric energy generated by the photovoltaic cell assembly is provided to the air conditioning device through the cooperation of the photovoltaic cell assembly and the circuit control device. Secondly, through the cooperation of the heat pipe assembly and the air conditioning device, the heat pipe assembly plays the role of the air conditioning outdoor unit condenser during the refrigeration process of the air conditioning device, and uses the heat pipe assembly to dissipate heat through the principle of sky radiation cooling. In the heating process of the air conditioning device, it plays the role of the air conditioning outdoor unit evaporator, and uses the heat pipe assembly to absorb the heat generated by the photovoltaic cell assembly. Therefore, by simultaneously utilizing the electric energy and heat energy generated by photovoltaic light heat, the air conditioning system can efficiently utilize solar energy throughout the year, and while ensuring the safe and reliable operation of the air conditioning device, the solar energy resources can be utilized to the maximum extent possible to achieve the technical effect of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the structure of a photovoltaic-thermal air-conditioning system in cooling mode disclosed in an embodiment of the present invention;

[0025] Figure 2 It is a schematic structural diagram of a photovoltaic-thermal air-conditioning system in a heating mode according to an embodiment of the present invention;

[0026] Figure 3 yes Figure 1 or Figure 2 A cross-sectional view of a photovoltaic-thermal integrated device;

[0027] Figure 4 yes Figure 3 A schematic diagram of the structure of the heat pipe assembly;

[0028] Figure 5 yes Figure 4 A schematic structural diagram of a heat pipe assembly from a first perspective;

[0029] Figure 6 yes Figure 5 A partial enlarged schematic diagram of point E in the middle;

[0030] Figure 7 yes Figure 5 A partial enlarged schematic diagram of point F in the middle;

[0031] Figure 8 yes Figure 4 A schematic structural diagram of a heat pipe assembly from a second perspective;

[0032] Fig. 9 yes Figure 1 or Figure 2 A schematic diagram of the circuit structure of the circuit control device in FIG.

[0033] Reference numerals:

[0034] 1-photovoltaic thermal integration device, 2-solar controller, 3-solar inverter, 4-battery, 5-grid, 6-electric wire, 7-electromagnetic four-way valve, 8-compressor, 9-indoor heat exchanger, 10-throttle valve, 11-connecting pipe, 12-cooling fan, 13-glass cover, 14-first adhesive film, 15-heat conductive plate, 16-photovoltaic cell assembly, 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, 24-heat pipe capillary wick surface, 25-electricity detection controller, 26-air conditioning device. DETAILED DESCRIPTION

[0035] 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 only 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.

[0036] In the present invention, the directions or positional relationships indicated by "upper", "lower", "outer", etc. are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0037] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the terms "installed", "set", "provided with", and "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; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. 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.

[0039] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (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, elements or components. Unless otherwise specified, "plurality" means two or more.

[0040] The inventive concept of the present invention is:

[0041] In the prior art, solar air conditioners only use the electricity generated by solar energy to directly provide the required electricity to the air conditioning system, but do not simultaneously use the electricity and heat energy generated by solar photovoltaic and thermal energy, resulting in the inability to efficiently utilize solar energy.

[0042] Since the prior art is unable to efficiently utilize solar energy, the first technical problem that the present invention solves is: how to realize the simultaneous utilization of electrical energy and thermal energy generated by solar photovoltaic and thermal energy. The present invention realizes the simultaneous utilization of electrical energy and thermal energy generated by photovoltaic and thermal energy through the coordination of flow paths and circuits between the air-conditioning device, the photovoltaic and thermal integrated device, and the circuit control device, so as to enable the air-conditioning system to efficiently utilize solar energy throughout the year, ensure the safe and reliable operation of the air-conditioning device, and maximize the use of solar energy resources to achieve the technical effect of energy conservation and emission reduction.

[0043] Specific:

[0044] See also Figure 1 to Figure 2 As shown, the photovoltaic-thermal air-conditioning system proposed in the first embodiment of the present invention includes an air-conditioning device 26, which includes a throttle valve 10, an indoor heat exchanger 9, an electromagnetic four-way valve 7 and a compressor 8 connected in sequence, and the air-conditioning system also includes: a photovoltaic-thermal integrated device 1, the photovoltaic-thermal integrated device 1 includes a photovoltaic cell assembly 16 and a heat pipe assembly 18, and the heat pipe assembly 18 is arranged on the photovoltaic cell assembly 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 assembly 16 is respectively electrically connected to the electromagnetic four-way valve 7 and the compressor 8 through the circuit control device.

[0045] Specifically, in order to ensure the flow of refrigerant in the air-conditioning system, the flow path structure (i.e., the flow path of the refrigerant) of 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 the B port of the electromagnetic four-way valve 7 through the connecting pipe 11, the A port of the electromagnetic four-way valve 7 being connected to the outlet of the compressor 8 through the connecting pipe 11, the C port of the electromagnetic four-way valve 7 being connected to the inlet of the compressor 8 through the connecting pipe 11, and the D port of the electromagnetic four-way valve 7 being connected to the heat pipe assembly 18 through the connecting pipe 11;

[0046] In order to ensure the transmission of electric energy, the circuit structure of this embodiment includes a solar controller 2 and a solar inverter 3 electrically connected via an electric wire 6, a photovoltaic cell assembly 16 electrically connected to one end of the solar controller 2 via an electric wire 6, and one end of the solar inverter 3 electrically connected to the electromagnetic four-way valve 7 and the compressor 8 via the electric wire 6 respectively.

[0047] In this embodiment, firstly, by electrically connecting the photovoltaic cell assembly 16 to the electromagnetic four-way valve 7 and the compressor 8 through a circuit control device, and by setting a circuit control device mainly composed of a solar controller 2 (such as an MPPT controller) and a solar inverter 3, when receiving light, the photovoltaic cell assembly 16 can use the photoelectric effect to convert solar energy into electrical energy, and the direct current generated by the photovoltaic cell assembly 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;

[0048] Secondly, by connecting the heat pipe assembly 18 with the throttle valve 10 and the electromagnetic four-way valve 7 respectively, the heat pipe assembly 18 can act as the condenser of the air conditioner outdoor unit during the refrigeration process of the air conditioner 26, and realize the heat dissipation and condensation of the high-temperature and high-pressure gaseous refrigerant. Specifically, the low-temperature and low-pressure liquid refrigerant changes into a low-temperature and low-pressure gaseous refrigerant after the heat absorption and cooling effect of the indoor heat exchanger 9, and the low-temperature and low-pressure gaseous refrigerant enters the compressor 8 through the electromagnetic four-way valve 7, and changes into a high-temperature and high-pressure gaseous refrigerant through the compressor 8, and the high-temperature and high-pressure gaseous refrigerant enters the heat pipe assembly 18 through the electromagnetic four-way valve 7, and the heat pipe assembly 18 uses the principle of sky radiation cooling 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, and the high-temperature and high-pressure liquid refrigerant passes through the throttle valve 10 and becomes a low-temperature and low-pressure liquid refrigerant, and the low-temperature and low-pressure liquid refrigerant continues to enter the air conditioner 26 to continue the refrigeration cycle.

[0049] At the same time, during the heating process of the air-conditioning device 26, it can act as an evaporator of the air-conditioning outdoor unit, and realize the effect of absorbing heat from the low-temperature and low-pressure liquid refrigerant. Specifically, the low-temperature and low-pressure gaseous refrigerant enters the compressor 8 through 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 the electromagnetic four-way valve 7. The high-temperature and high-pressure gaseous refrigerant passes through the indoor heat exchanger 9 and absorbs cold and releases heat, and then changes into a high-temperature and high-pressure liquid refrigerant. The high-temperature and high-pressure liquid refrigerant passes through the throttle valve 10 and becomes a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant enters the heat pipe assembly 18 to absorb the heat generated by the heat pipe assembly 18 absorbing the photovoltaic cell assembly 16 and changes into a low-temperature and low-pressure gaseous refrigerant. The low-temperature and low-pressure gaseous refrigerant continues to enter the air-conditioning device 26 to continue the heating cycle.

[0050] To summarize, this embodiment firstly realizes that the electric energy generated by the photovoltaic cell assembly 16 is provided to the air-conditioning device 26 for use through the cooperation between the photovoltaic cell assembly 16 and the circuit control device. Secondly, through the cooperation between the heat pipe assembly 18 and the air-conditioning device 26, the heat pipe assembly 18 plays the role of the air-conditioning outdoor unit condenser during the cooling process of the air-conditioning device 26. The heat pipe assembly 18 is used to dissipate heat through the principle of sky radiation cooling, and plays the role of the air-conditioning outdoor unit evaporator during the heating process of the air-conditioning device 26. The heat pipe assembly 18 absorbs the heat generated by the photovoltaic cell assembly 16 for heat absorption. By simultaneously utilizing the electric energy and thermal energy generated by photovoltaic thermal energy, the technical effect of enabling the air-conditioning system to efficiently utilize solar energy is achieved.

[0051] like Figure 4 As shown, in order to enable the heat pipe assembly to achieve heat exchange with the refrigerant, the second embodiment of the present invention proposes an air-conditioning system based on photovoltaic thermal energy, and 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 connected to the electromagnetic four-way valve 7; a bottom connecting pipe 22, one end of the bottom connecting pipe 22 is connected to the throttle valve 10; a heat pipe 21, the heat pipe 21 includes a plurality of heat pipes, one end of each heat pipe 21 is connected to the top connecting pipe 20, and the other end of each heat pipe 21 is connected to the bottom connecting pipe 22.

[0052] In this embodiment, firstly, by setting one end of the top connecting pipe 20 to be connected to the electromagnetic four-way valve 7, one end of the bottom connecting pipe 22 to be connected to the throttle valve 10, and the two ends of the heat pipe 21 to be connected 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, the high-temperature and high-pressure gaseous refrigerant can be dissipated when the air-conditioning device is cooling, and the low-temperature and low-pressure liquid refrigerant can be absorbed when the air-conditioning device is heating.

[0053] like Figure 5-9 As shown, in order to make the heat pipe assembly more conducive to the reflux of high-temperature and high-pressure liquid refrigerant when used as an air-conditioning outdoor unit condenser, and to make the heat pipe assembly more conducive to the evaporation of the refrigerant in a gas-liquid mixed state when used as an air-conditioning outdoor unit evaporator, the third embodiment of the present invention proposes an air-conditioning system based on photovoltaic light heat, and on the basis of the second embodiment, further includes: the heat pipe 21 is arranged on the center line between the top connecting pipe 20 and the bottom connecting pipe 22 (specifically, as shown in FIG. Figure 8 The heat pipe 21 is close to the photovoltaic cell assembly 16;

[0054] 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;

[0055] The side of the inner wall of the heat pipe 21 close to the photovoltaic cell assembly 16 is a heat pipe capillary wick surface 24. Specifically, the heat pipe capillary wick surface 24 is a capillary wick provided 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 assembly 16 is a heat pipe copper wall surface 23. Specifically, the heat pipe copper wall surface 23 is a smooth surface of the inner wall surface of the heat pipe 21 made of copper.

[0056] In this embodiment, since the photovoltaic-photovoltaic integrated device is tilted during use, the heat pipe 21 is also in a tilted state during use. At the same time, in order to make the outer wall surface of the heat pipe 21 on the side of the heat pipe capillary liquid absorption core surface 24 better set to be close to the photovoltaic cell assembly 16, firstly, the position of the heat pipe 21 is set to be the center line between the top connecting pipe 20 and the bottom connecting pipe 22 and close to one side of the photovoltaic cell assembly 16 and have a certain curvature; so that the position of the heat pipe 21 is closer to the photovoltaic cell assembly 16, and the inner wall of the heat pipe 21 is set again. The side close to the above-mentioned photovoltaic cell assembly 16 is the heat pipe capillary liquid absorption core surface 24, so that the outer wall surface of the heat pipe 21 on the side of the heat pipe capillary liquid absorption core surface 24 can be better close to the photovoltaic cell assembly 16;

[0057] At the same time, the lower end of the heat pipe 21 is set to extend into the bottom connecting pipe 22 and close to the lower pipe wall of the bottom connecting pipe 22, and the side of the inner wall of the heat pipe 21 away from the photovoltaic cell assembly 16 is set as the heat pipe copper wall 23. 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 connecting pipe 20. The high-temperature and high-pressure gaseous refrigerant passes through the condensation section of the heat pipe 21 and uses the principle of space radiation refrigeration to dissipate the heat of the high-temperature and high-pressure gaseous refrigerant, and then condenses the high-temperature and high-pressure gaseous refrigerant into a high-temperature and high-pressure liquid refrigerant. Since the photovoltaic photoelectric integrated device is tilted during use, Since the heat pipe 21 is arranged in a tilted state during use, the high-temperature and high-pressure liquid refrigerant can flow toward the bottom connecting pipe 22 better through the tilted heat pipe 21 and the heat pipe copper wall 23 under the action of gravity. At the same time, since the lower end of the heat pipe 21 is arranged to extend into the bottom connecting pipe 22 and close to the lower pipe wall of the bottom connecting pipe 22, the high-temperature and high-pressure liquid refrigerant can pass through the portion of the lower end of the heat pipe 21 extending into the bottom connecting pipe 22 and can better enter the bottom connecting pipe 22 and flow back to the air conditioning device 26, thereby flowing back to the air conditioning device faster to continue the refrigeration cycle;

[0058] Secondly, the upper end of the heat pipe 21 is set to be flush with the lower tube wall of the top connecting pipe 20, and the side of the inner wall of the heat pipe 21 close to the photovoltaic cell assembly 16 is set as the heat pipe capillary liquid absorption core surface 24, and the position of the heat pipe 21 assembly can make the heat pipe capillary liquid absorption core surface 24 better close to the photovoltaic cell assembly 16, so that during the heating process of the air-conditioning device 26, the low-temperature and low-pressure liquid refrigerant passes through the bottom connecting pipe 22 and enters the capillary liquid absorption core surface 24 of the evaporation section of the heat pipe 21 under the action of capillary force. Since the heat pipe capillary liquid absorption core surface 24 is close to the photovoltaic cell assembly 16, it can absorb the accumulated heat of the photovoltaic cell assembly 16 more quickly, thereby providing more heat to the refrigerant to make it evaporate quickly into a low-temperature and low-pressure gaseous refrigerant. At the same time, since the upper end of the heat pipe 21 is set to be flush with the lower tube wall of the top connecting pipe 20, the low-temperature and low-pressure gaseous refrigerant has little resistance when entering the top connecting pipe 20, and can enter the air-conditioning device through the top connecting pipe 20 more quickly to continue the heating cycle.

[0059] like Figure 4As shown, in order to make the photovoltaic thermal integration device better realize the photovoltaic thermal effect, the third embodiment of the present invention proposes an air conditioning system based on photovoltaic thermal, and on the basis of the second embodiment or the third embodiment, the photovoltaic thermal integration device 1 includes a glass cover plate 13, a first adhesive film 14, a photovoltaic cell assembly 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 side of the photovoltaic thermal integration device 1 to the backlight side of the photovoltaic thermal integration device 1. Specifically, the light side of the photovoltaic thermal integration device 1 refers to the side of the photovoltaic thermal integration device 1 facing the sunlight in the working state, and the backlight side of the photovoltaic thermal integration device 1 refers to the side of the photovoltaic thermal integration device 1 facing away from the sunlight in the working state. By ) as a substrate, the top layer is a glass cover plate 13, the glass cover plate 13 is adhered to the photovoltaic cell assembly 16 through a first adhesive film 14 (preferably EVA adhesive film), and the photovoltaic cell assembly 16 is adhered through a second adhesive film (preferably EVA adhesive film) and a first insulating layer 17 (preferably TPT insulating layer is a back film composed of three layers of PVF (polyvinyl fluoride film)-PET (polyester film)-PVF films, the outer protective layer PVF has good resistance to environmental corrosion, the middle layer is polyester film with good insulation performance, and the inner layer PVF has good adhesion performance after surface treatment and EVA) to complete the packaging, and then it is pressed on a heat conducting plate 15 (preferably an aluminum plate), the heat pipe assembly 18 is bonded to the heat conducting plate 15 (preferably an aluminum plate) through thermal conductive silicone, and the outer side of the evaporation section of the heat pipe assembly 18 has a second insulating layer 19.

[0060] In this embodiment, the photovoltaic thermal integration device 1 composed of the glass cover 13, the first adhesive film 14, the photovoltaic cell assembly 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 has good light transmittance and stability, so that the photovoltaic thermal integration device 1 can better realize the photovoltaic thermal effect.

[0061] like Figure 1 or Figure 2 As shown, in order to better dissipate heat of the photovoltaic thermal integration device, the fifth embodiment of the present invention proposes an air-conditioning system based on photovoltaic thermal energy, and on the basis of the fourth embodiment, the photovoltaic thermal integration device 1 also includes a cooling fan 12 arranged on the backlight side of the photovoltaic thermal integration device 1. Specifically, the cooling fan 12 is electrically connected to the photovoltaic cell assembly 16 through the solar controller 2 and the solar inverter 3 via the wire 6.

[0062] In this embodiment, a cooling fan 12 is provided. Through the cooling effect of the cooling fan 12, the photovoltaic thermal integration device 1 can be better cooled when it is working. At the same time, when the photovoltaic thermal integration device 1 is not working, the high-temperature and high-pressure gaseous refrigerant in the heat pipe 21 can be assisted in cooling during the air conditioning cooling process at night in the summer.

[0063] like Figure 3 As shown, in order to make the heat pipe assembly have better heat absorption capacity, the sixth embodiment of the present invention proposes an air conditioning system based on photovoltaic thermal energy, and 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 evenly arranged on the heat conductive plate 15, and 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.

[0064] In this embodiment, the evaporation section of the heat pipe 21 can be better fitted to the back of the heat conducting plate 15, thereby increasing the contact area between the heat pipe 21 and the heat conducting plate 15, thereby achieving a better heat exchange purpose.

[0065] In order to improve the light absorption performance of the photovoltaic cell assembly, the seventh embodiment of the present invention proposes an air-conditioning system based on photovoltaic thermal energy, and on the basis of the fourth embodiment, the photovoltaic cell assembly 16 includes a plurality of photovoltaic cell packs, and the plurality of photovoltaic cell packs are arranged in parallel in sequence along a first direction. The photovoltaic cell packs include a plurality of photovoltaic cell sheets, and the plurality of photovoltaic cell sheets are arranged in parallel in sequence along a second direction, and the first direction and the second direction are perpendicular to each other.

[0066] In this embodiment, by arranging and setting the photovoltaic cells, it is possible to ensure that more photovoltaic cells are set as much as possible within a limited space, thereby improving the light absorption performance of the photovoltaic cell assembly.

[0067] like Fig. 9 As shown, in order to improve the utilization rate of the electricity generated by photovoltaic power generation of the photovoltaic-thermal integrated device, the eighth embodiment of the present invention proposes an air-conditioning system based on photovoltaic-thermal, and on the basis of the first embodiment, the circuit control device also includes: a battery 4, and the battery 4 is electrically connected to the photovoltaic cell assembly 16 through the solar controller 2.

[0068] In this embodiment, by providing a storage battery 4, the excess electric energy generated by the photovoltaic-thermal integrated device 1 can be transmitted to the storage battery 4 for storage through the solar controller 2, thereby improving the utilization rate of the electric energy generated by the photovoltaic-thermal integrated device.

[0069] like Fig. 9As shown, in order to further improve the utilization rate of the electricity generated by the photovoltaic power generation of the photovoltaic thermal integrated device, the ninth embodiment of the present invention proposes an air conditioning system based on photovoltaic thermal, and on the basis of the eighth embodiment, the circuit control device also includes: a power detection controller 25, and the power detection controller 25 is electrically connected to the battery 4 and the solar controller 2 respectively.

[0070] In this embodiment, by setting up a power detection controller 25, the power stored in the battery 4 can be monitored in real time, so that the excess electric energy generated by the photovoltaic thermal integration device 1 can be better dispatched to the battery 4 or the power grid 5 through the solar controller 2, thereby further improving the utilization rate of the electric energy generated by photovoltaic power generation of the photovoltaic thermal integration device.

[0071] like Figure 1 As shown in Figure 2, in order to control the flow direction of the refrigerant, the tenth embodiment of the present invention proposes an air conditioning system based on photovoltaic heat, and on the basis of the first embodiment, the A port of the electromagnetic four-way valve 7 is connected to the outlet of the compressor 8, the B port of the electromagnetic four-way valve 7 is connected to the indoor heat exchanger 9, the C port of the electromagnetic four-way valve 7 is connected to the inlet of the compressor 8, and the D port of the electromagnetic four-way valve is connected to the top connecting pipe 20.

[0072] In the cooling process of the air-conditioning device 26 in the summer, the electromagnetic four-way valve 7 is in an unpowered state, the A port of the electromagnetic four-way valve 7 is connected to the D port of the electromagnetic four-way valve 7, the B port of the electromagnetic four-way valve 7 is connected to the C port of the electromagnetic four-way valve 7, and the low-temperature and low-pressure liquid refrigerant is transformed into a low-temperature and low-pressure gaseous refrigerant after absorbing heat and releasing cooling through the indoor heat exchanger 9. The low-temperature and low-pressure gaseous refrigerant enters the compressor 8 through the B port and the C port of the electromagnetic four-way valve 7, and is transformed into 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 the A port and the D port of the electromagnetic four-way valve 7. During the winter heating process of the air-conditioning device 26, the electromagnetic four-way valve 7 is in the energized state, the A port of the electromagnetic four-way valve 7 is connected to the B port of the electromagnetic four-way valve 7, the C port of the electromagnetic four-way valve 7 is connected to the D port of the electromagnetic four-way valve 7, and the low-temperature and low-pressure gaseous refrigerant enters the compressor 8 through the D port and the C port 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, and the high-temperature and high-pressure gaseous refrigerant enters the indoor heat exchanger 9 through the A port and the B port of the electromagnetic four-way valve 7. Therefore, the flow direction of the refrigerant is controlled by the conduction of different ports of the electromagnetic four-way valve 7.

[0073] As shown in Figure 1, Figure 2 and Fig. 9 As shown, the arrows in FIG. 1 and FIG. 2 indicate the flow direction of the refrigerant. The working principle of the photovoltaic-thermal air conditioning system disclosed in this embodiment is as follows: Firstly, the photovoltaic effect of the photovoltaic cell assembly 16 is utilized. Under the condition of sufficient light, the direct current generated by the photovoltaic cell assembly 16 is first controlled by the solar controller 2 (for example, MPPT controller, full name Maximum Power Point Tracking controller) to always operate at the maximum power point to generate the maximum electric energy, and then converted into alternating current by the solar inverter 3 to directly drive the power-consuming end (for example, electromagnetic four-way valve 7, compressor 8 and heat exchanger fan 12) of the air-conditioning system. At the same time, the excess electric energy generated by the photovoltaic cell assembly 16 is stored in the storage battery 4 or directly connected to the power grid 5. Under the condition of insufficient light, the power demand of the power-consuming end (for example, electromagnetic four-way valve 7, compressor 8 and heat exchanger fan 12) of the air-conditioning system is met by the storage battery 4 or the power grid 5, thereby making full use of the electric energy generated by the photovoltaic cell assembly 16 to achieve the goal of energy saving and emission reduction, wherein all current transmission is transmitted through the wire 6; Secondly, during the cooling process of the air-conditioning device 26 in summer (the specific cooling principle of the air-conditioning device 26 is the existing principle in the art and will not be described in detail here), the electromagnetic four-way valve 7 is in a non-energized state, the A port of the electromagnetic four-way valve 7 is connected to the D port of the electromagnetic four-way valve 7, the B port of the electromagnetic four-way valve 7 is connected to the C port of the electromagnetic four-way valve 7, and the low-temperature and low-pressure liquid refrigerant is transformed into a low-temperature and low-pressure gaseous refrigerant after absorbing heat and releasing cooling through the indoor heat exchanger 9. The low-temperature and low-pressure gaseous refrigerant enters the compressor 8 through the B port and the C port of the electromagnetic four-way valve 7, and is transformed into 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 the A port and the D port of the electromagnetic four-way valve 7. The heat pipe assembly 18 uses the principle of sky radiation cooling (that is, using the temperature difference between the photovoltaic and thermal integrated device 1 and the external environment at night in summer to transfer heat in the form of infrared radiation). The heat of the high-temperature and high-pressure gaseous refrigerant is dissipated through the atmospheric window (8-13μm band) to the external environment in the form of radiation) 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 passes through the throttle valve 10 and becomes a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant continues to enter the air-conditioning device 26 for a refrigeration cycle. It can be seen that during the refrigeration process of the air-conditioning device 26, the heat pipe assembly 18 acts as a condenser of the air-conditioning outdoor unit, achieving the function of dissipating heat for the high-temperature and high-pressure gaseous refrigerant. Finally, during the winter heating process of the air-conditioning device 26 (the specific heating principle of the air-conditioning device 26 is the existing principle in the art and will not be described in detail here), the electromagnetic four-way valve 7 is in the energized state, the A port of the electromagnetic four-way valve 7 is connected to the B port of the electromagnetic four-way valve 7, the C port of the electromagnetic four-way valve 7 is connected to the D port of the electromagnetic four-way valve 7, the low-temperature and low-pressure gaseous refrigerant enters the compressor 8 through the D port and the C port 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 A port and the B port of the electromagnetic four-way valve 7, the high-temperature and high-pressure gaseous refrigerant changes phase into a high-temperature and high-pressure liquid refrigerant through the indoor heat exchanger 9 through the cold absorption and heat release effect, the high-temperature and high-pressure liquid refrigerant passes through the throttle valve 10 and becomes a low-temperature and low-pressure liquid refrigerant, the low-temperature and low-pressure liquid refrigerant enters the heat pipe assembly 18 and is absorbed by the heat pipe assembly 18 The heat generated by the photovoltaic cell assembly 16 is absorbed and phase-changed into a low-temperature, low-pressure gaseous refrigerant, and the low-temperature, low-pressure gaseous refrigerant continues to enter the air-conditioning device 26 for a heating cycle. It can be seen that during the heating process of the air-conditioning device 26, the heat pipe assembly 18 acts as an evaporator of the air-conditioning outdoor unit during the heating process of the air-conditioning device 26, and achieves the effect of absorbing heat from the low-temperature, low-pressure liquid refrigerant.

[0077] Each embodiment in this specification is described in a progressive manner, and the same and similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the rights of the present invention.

Claims

1. An air conditioning system based on photovoltaic thermal energy, comprising an air conditioning device (26), wherein the air conditioning device (26) comprises a throttle valve (10), an indoor heat exchanger (9), an electromagnetic four-way valve (7) and a compressor (8) which are connected in sequence, characterized in that: The air conditioning system further comprises: A photovoltaic-thermal integrated device (1), the photovoltaic-thermal integrated device (1) comprising a photovoltaic cell assembly (16) and a heat pipe assembly (18), the heat pipe assembly (18) being arranged on the photovoltaic cell assembly (16); A circuit control device, the circuit control device comprising a solar controller (2) and a solar inverter (3), the solar controller (2) and the solar inverter (3) being electrically connected; The heat pipe assembly (18) is respectively connected to the throttle valve (10) and the electromagnetic four-way valve (7), and the photovoltaic cell assembly (16) is respectively electrically connected to the electromagnetic four-way valve (7) and the compressor (8) through the circuit control device.

2. The photovoltaic-thermal air conditioning system according to claim 1 is characterized in that: The heat pipe assembly (18) comprises: A top connecting pipe (20), one end of which is connected to the electromagnetic four-way valve (7); a bottom connecting pipe (22), one end of the bottom connecting pipe (22) being in communication with the throttle valve (10); A heat pipe (21), wherein the heat pipe (21) comprises a plurality of heat pipes, one end of each heat pipe (21) being connected to the top connecting pipe (20), and the other end of each heat pipe (21) being connected to the bottom connecting pipe (22).

3. The photovoltaic-thermal air conditioning system according to claim 2, characterized in that: 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), and the heat pipe (21) is close to the photovoltaic cell assembly (16); 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); The side of the inner wall of the heat pipe (21) close to the photovoltaic cell assembly (16) is a heat pipe capillary liquid absorption core surface (24), and the side of the inner wall of the heat pipe (21) away from the photovoltaic cell assembly (16) is a heat pipe copper wall surface (23).

4. The photovoltaic-thermal air conditioning system according to claim 2 or 3, characterized in that: The photovoltaic-thermal integrated device (1) comprises a glass cover plate (13), a first adhesive film (14), a photovoltaic cell assembly (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 of the photovoltaic-thermal integrated device (1) to the backlight side of the photovoltaic-thermal integrated device (1).

5. The photovoltaic-thermal air conditioning system according to claim 4, characterized in that: The photovoltaic-thermal integrated device (1) further comprises a heat dissipation fan (12) arranged on the backlight side of the photovoltaic-thermal integrated device (1).

6. The photovoltaic-thermal air conditioning system according to claim 4, characterized in that: The heat pipe assembly (18) comprises a plurality of heat pipes (21), the plurality of heat pipes (21) are evenly arranged on the heat conducting plate (15), and the plurality of heat pipes (21) are all flat in shape.

7. The photovoltaic-thermal air conditioning system according to claim 4, characterized in that: The photovoltaic cell assembly (16) comprises a plurality of photovoltaic cell packs, wherein the plurality of photovoltaic cell packs are arranged in parallel in sequence along a first direction; the photovoltaic cell packs comprise a plurality of photovoltaic cell sheets, wherein the plurality of photovoltaic cell sheets are arranged in parallel in sequence along a second direction, and the first direction is perpendicular to the second direction.

8. The photovoltaic-thermal air conditioning system according to claim 1, characterized in that: The circuit control device further comprises: a storage battery (4), wherein the storage battery (4) is electrically connected to the photovoltaic cell assembly (16) via the solar controller (2).

9. The photovoltaic-thermal air conditioning system according to claim 7, characterized in that: The circuit control device further comprises: an electric quantity detection controller (25), wherein the electric quantity detection controller (25) is electrically connected to the storage battery (4) and the solar energy controller (2) respectively.

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

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