A PTV heat pump system for air conditioning and domestic hot water

Abstract

The utility model discloses an air conditioning and domestic hot water PTV heat pump system, including a PVT component, a hot water storage tank, a first water pump, a first solenoid valve, a first non-return valve, a first heat exchanger, a second water pump, an air conditioning water tank, an expansion valve, a second heat exchanger, a third water pump, a domestic water tank, a third heat exchanger and a fourth water pump, a controller, a multi-way valve, a liquid storage tank, a compressor and a temperature measurement module; the PVT component includes a heat-conducting pipe; the first end of the hot water storage tank is connected to the inlet end of the heat-conducting pipe through the first water pump and the first non-return valve in sequence; the second end of the hot water storage tank is connected to the outlet end of the heat-conducting pipe through the first solenoid valve; the first water pump, the first solenoid valve, the second water pump, the third water pump, the fourth water pump, the multi-way valve and the compressor are respectively connected to the controller. The heat pump system of the utility model solves the problem of component temperature rise in the current solar photovoltaic power generation, and makes full use of the heat pump and uses a compressor to apply heat to domestic hot water, air conditioning heating and cooling.

Description

Technical Field

[0001] The utility model relates to the field of renewable technology, in particular to an air conditioning and domestic hot water PTV heat pump system. Background Art

[0002] At present, the systems composed of PVT (solar photovoltaic and thermal integrated components) and heat pumps are basically used for hot water or heating air conditioning. They are all heat pump direct injection systems. PVT acts as the evaporator of the heat pump. When there is sunshine, the heat generated by PVT directly evaporates the refrigerant and enters the heat generated by the compressor and expansion valve to exchange heat with the condenser, and the high-temperature hot water is stored in the hot water tank for standby. This technical route determines the function of the system, and the heat pump does not give full play to its role. In addition, the PVT body is outdoors, and the connecting pipes are all capillaries. The internal pressure is very high. When connected to the heat pump host, Freon leakage is easy to occur. When there is sunshine at noon, the heat is large enough to generate a lot of heat. When there is no sunshine on cloudy days, the heat is very small. The equipment relies heavily on solar energy, so it is difficult to ensure the stability of energy. Utility Model Content

[0003] In view of the deficiencies of the above-mentioned related technologies, the purpose of the utility model is to provide an air conditioning and domestic hot water PTV heat pump system, which solves the problem of component temperature increase in the current solar photovoltaic power generation, while making full use of the heat pump and using a compressor to apply heat to domestic hot water, air conditioning heating, and refrigeration.

[0004] The utility model provides an air conditioning and domestic hot water PTV heat pump system, comprising a PVT component, a hot water storage tank, a first water pump, a first solenoid valve, a first non-return valve, a first heat exchanger, a second water pump, an air conditioning water tank, an expansion valve, a second heat exchanger, a third water pump, a domestic water tank, a third heat exchanger and a fourth water pump, a controller, a multi-way valve, a liquid storage tank, a compressor and a temperature measuring module for detecting the heat generated by the PVT component and the temperature in each water tank among the hot water storage tank, the domestic water tank and the air conditioning water tank; the PVT component comprises a heat conduction pipe;

[0005] The first end of the hot water storage tank is connected to the inlet end of the heat transfer pipe through the first water pump and the first one-way valve in sequence; the second end of the hot water storage tank is connected to the outlet end of the heat transfer pipe through the first solenoid valve to form a thermal circulation loop;

[0006] The third end of the hot water storage tank is connected to the first end of the multi-way valve, and the fourth end of the hot water storage tank is connected to the first end of the second heat exchanger through the expansion valve; the second end of the second heat exchanger is connected to the second end of the multi-way valve; the third end of the second heat exchanger is connected to the first end of the air-conditioning water tank; the fourth end of the second heat exchanger is connected to the second end of the air-conditioning water tank through the third water pump; the first end of the third heat exchanger is connected to the third end of the multi-way valve, and the second end of the third heat exchanger is connected to the fourth end of the multi-way valve through the compressor and the liquid storage tank in sequence, and the fourth end of the multi-way valve is communicated with the first end of the multi-way valve; the third end of the third heat exchanger is connected to the first end of the domestic water tank, and the fourth end of the third heat exchanger is connected to the second end of the domestic water tank;

[0007] The first water pump, the first solenoid valve, the second water pump, the third water pump, the fourth water pump, the multi-way valve and the compressor are respectively connected to the controller.

[0008] Optionally, it also includes an anti-overheating module for preventing the hot water storage tank from overheating, and the anti-overheating module is connected to the hot water storage tank.

[0009] Optionally, the overheating prevention module includes a fifth water pump and a radiator, the fifth end of the hot water storage tank is connected to the first end of the radiator through the fifth water pump, and the second end of the radiator is connected to the sixth end of the hot water storage tank.

[0010] Optionally, an energy-saving control module is also included, and the domestic water tank and the PVT component are respectively connected to the energy-saving control module.

[0011] Optionally, the energy-saving control module includes a sixth water pump, a second solenoid valve, a second one-way valve, a first relay, and a current transformer for sensing whether the sixth water pump is powered on and controlling the first relay to be disconnected;

[0012] The first end of the second solenoid valve is connected to the third end of the domestic water tank, and the second end of the second solenoid valve is connected to the outlet end of the heat transfer pipe; the inlet end of the heat transfer pipe is also connected to the fourth end of the domestic water tank through the second one-way valve and the sixth water pump in sequence, and the current transformer is arranged on the sixth water pump; the first water pump is connected to the first relay, and the first relay is connected to the current transformer.

[0013] Optionally, an indoor air-conditioning control module is also included, and the indoor air-conditioning control module is connected to the air-conditioning water tank.

[0014] Optionally, the indoor air-conditioning control module includes an air-conditioning controller, a third one-way valve, a seventh water pump, a coil, a room temperature controller, an electric actuator, a control water valve, a water distributor and a water collector; the third end of the air-conditioning water tank is connected in sequence through the seventh water pump, the third one-way valve, the coil, the water collector and the fourth end of the air-conditioning water tank; the air-conditioning controller is connected to the seventh water pump.

[0015] Optionally, a photovoltaic energy storage grid-connected module is also included, and the photovoltaic energy storage grid-connected module is connected to the PVT component.

[0016] Optionally, the photovoltaic energy storage grid-connected module includes a battery and an inverter controller, and the PVT component and the battery are respectively connected to the inverter controller.

[0017] Optionally, the PVT component also includes a photovoltaic cell panel, a heat collecting plate and a bottom frame, the heat collecting plate is arranged on the back side of the photovoltaic cell panel, the heat conducting pipe is arranged on the side of the heat collecting plate away from the photovoltaic cell panel, the heat collecting plate and the bottom frame constitute a accommodating cavity, a heat conducting component is arranged between the heat collecting plate and the heat conducting pipe, a heat insulating layer is arranged on the side of the heat conducting pipe away from the heat conducting component, and the heat conducting component, the heat conducting pipe and the heat insulating layer are all located in the accommodating cavity.

[0018] The utility model combines the air conditioning and domestic hot water PTV heat pump system with the comprehensive utilization of the PVT heat pump to solve the problem of component temperature increase in the current solar photovoltaic power generation. At the same time, the heat pump uses a compressor to apply heat to domestic hot water, air conditioning heating, and refrigeration to provide all energy supply for buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of an air conditioning and domestic hot water PTV heat pump system according to an embodiment of the utility model;

[0020] Figure 2 This is a partial schematic diagram of an air conditioning and domestic hot water PTV heat pump system according to another embodiment of the utility model;

[0021] Figure 3 for Figure 1 A schematic diagram of an overheat protection module in the illustrated embodiment;

[0022] Figure 4 for Figure 1 A schematic diagram of an energy-saving control module in the illustrated embodiment;

[0023] Figure 5 for Figure 1 A schematic diagram of an indoor air conditioning control module in the illustrated embodiment;

[0024] Figure 6 for Figure 1 A schematic diagram of a photovoltaic energy storage grid-connected module in the illustrated embodiment;

[0025] Figure 7 for Figure 1 A schematic diagram of the structure of a PVT assembly in the illustrated embodiment.

[0026] Description of reference numerals: 101-PVT assembly; 103-second controller; 104-first solenoid valve; 106-first non-return valve; 107-first water pump; 108-hot water storage tank; 202-fifth water pump; 203-radiator; 204-third controller; 301-inverter controller; 302-battery; 401-fourth controller; 402-second solenoid valve; 403-sixth water pump; 404-second non-return valve; 501-first relay; 502-current transformer; 601-second water pump; 605-first heat exchanger; 606-expansion valve; 607-first pressure valve; 610-third water pump; 612-second heat exchanger; 613-multi-way valve; 614-second pressure valve; 615-first controller; 616-liquid storage tank; 617-compressor; 618-the fourth water pump; 620-the third heat exchanger; 622-the domestic water tank; 701-the air conditioning water tank; 702-the air conditioning controller; 703-the third one-way valve; 704-the seventh water pump; 705-the coil; 706-the indoor room temperature controller; 707-the electric actuator; 708-the control water valve; 709-the water distributor; 710-the water collector; A-the hot water storage tank module; B-the domestic water tank module; C-the air conditioning water tank module; D-the overheating prevention module; E-the energy-saving control module; F-the indoor air conditioning control module; G-the photovoltaic energy storage grid-connected module; 1-the heat collecting plate; 2-the heat conducting pipe; 3-the polymer heat conducting component; 4-the insulation layer, 5-the frame; 6-the bottom plate; 7-the packaging layer; 8-the first adhesive film; 9-the battery assembly; 10-the second adhesive film; 11-the back plate; 12-the third adhesive film;

[0027] T1-first temperature sensor; T2-second temperature sensor, T3-third temperature sensor; T4-fourth temperature sensor; T5-fifth temperature sensor; T6-sixth temperature sensor; T7-seventh temperature sensor; T9-ninth temperature sensor; T10-tenth temperature sensor; T11-eleventh temperature sensor; T12-twelfth temperature sensor; T13-thirteenth temperature sensor. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0029] The following descriptions of the embodiments are with reference to the attached diagrams, which are used to illustrate specific embodiments in which the present invention can be implemented. The serial numbers of the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention include direct and indirect connections (couplings) unless otherwise specified. The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached diagrams. Therefore, the directional terms used are for better and clearer explanation and understanding of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances. It should be noted that the terms "first", "second" and the like in the specification and claims of the utility model and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including", "may include", "include", or "may include" used in the utility model indicate the existence of the corresponding functions, operations, elements, etc. disclosed, and do not limit one or more other functions, operations, elements, etc. In addition, the terms "including" or "include" indicate the existence of the corresponding features, numbers, steps, operations, elements, components or combinations thereof disclosed in the specification, and do not exclude the existence or addition of one or more other features, numbers, steps, operations, elements, components or combinations thereof, and are intended to cover non-exclusive inclusions.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] See also Figure 1 and Figure 2 The embodiment of the utility model discloses an air conditioning and domestic hot water PTV heat pump system, including a PVT component 101, a hot water storage tank 108, a first water pump 107, a first solenoid valve 104, a first non-return valve 106, a first heat exchanger 605, a second water pump 601, an air conditioning water tank 701, an expansion valve 606, a second heat exchanger 612, a third water pump 610, a domestic water tank 622, a third heat exchanger 620 and a fourth water pump 618, a controller, a multi-way valve 613, a liquid storage tank 616, a compressor 617 and a temperature measurement module for detecting the heat generated by the PVT component 101, and the temperature in each water tank of the hot water storage tank 108, the domestic water tank 622 and the air conditioning water tank 701; the PVT component includes a heat conduction pipe 2;

[0033] The first end of the hot water storage tank 108 is connected to the inlet end of the heat-conducting pipe 2 through the first water pump 107 and the first one-way valve 106 in sequence; the second end of the hot water storage tank 108 is connected to the outlet end of the heat-conducting pipe 2 through the first solenoid valve 104 to form a thermal circulation loop;

[0034] The third end of the hot water storage tank 108 is connected to the first end of the multi-way valve 613, and the fourth end of the hot water storage tank 108 is connected to the first end of the second heat exchanger 612 through the expansion valve 606; the second end of the second heat exchanger 612 is connected to the second end of the multi-way valve 613; the third end of the second heat exchanger 612 is connected to the first end of the air conditioning water tank 701; the fourth end of the second heat exchanger 612 is connected to the second end of the air conditioning water tank 701 through the third water pump 610. ; The first end of the third heat exchanger 620 is connected to the third end of the multi-way valve 613, the second end of the third heat exchanger 620 is connected to the fourth end of the multi-way valve 613 through the compressor 617 and the liquid storage tank 616 in sequence, and the fourth end of the multi-way valve 613 is connected to the first end of the multi-way valve 613; the third end of the third heat exchanger 620 is connected to the first end of the domestic water tank 622, and the fourth end of the third heat exchanger 620 is connected to the second end of the domestic water tank 622;

[0035] The first water pump 107 , the first solenoid valve 104 , the second water pump 601 , the third water pump 610 , the fourth water pump 618 , the multi-way valve 613 and the compressor 617 are respectively connected to the controller.

[0036] The PVT component 101 generates heat while generating electricity. This heat is transferred to the temperature measurement module. The temperature measurement module detects the internal temperature of the hot water storage tank 108. After the controller calculates, when the temperature on the PVT component is higher than the hot water storage tank 108 by the first preset temperature, the first water pump 107 starts to run, and stops when it reaches the second preset temperature. The second preset temperature is less than the first preset temperature. The first solenoid valve 104 is connected in parallel with the first water pump 107. That is, the liquid flows from the hot water storage tank 108, through the first water pump 107, to the first one-way valve 106, and then enters the PVT component 101 to take away the internal heat, and returns to the hot water storage tank 108 through the first solenoid valve 104 to complete a cycle. The controller working conditions are set as: T1-T2 = first preset temperature, the water pump starts; T1-T2 = second preset temperature, the water pump stops. Among them, the first preset temperature ranges from 5°C to 7°C, and the second preset temperature ranges from 1°C to 3°C. For example, the first preset temperature is 6°C and the second preset temperature is 2°C.

[0037] When the temperature on the PVT assembly 101 reaches the third preset temperature, the antifreeze function of the controller is started, the first water pump 107 is operated, and the temperature is stopped when the temperature reaches the fourth preset temperature, and the third preset temperature is less than the fourth preset temperature. The value range of the third preset temperature is 2°C to 4°C, and the value range of the fourth preset temperature is 5°C to 7°C. For example, the third preset temperature is 3°C, and the fourth preset temperature is 6°C.

[0038] For example, when entering the PVT assembly 101, the liquid first enters the lower part of the PVT assembly 101 and then takes away the internal heat at the upper outlet. The specific liquid flow direction is set according to the actual situation, and this is taken as an example, but is not limited to this.

[0039] The hot water storage tank 108 is mainly composed of an inner tank, a heat-insulating material, an outer shell and a plurality of water inlets and outlets.

[0040] In this embodiment, the temperature measurement module includes a first temperature sensor T1, a second temperature sensor T2, a fourth temperature sensor T4 and a fifth temperature sensor T5. Exemplarily, the first temperature sensor T1 is fixed to the flow channel on the PVT component 101, and the heat generated by the PVT component 101 while generating electricity is conducted to the first temperature sensor T1. The second temperature sensor T2 is fixed at the liquid outlet of the hot water storage tank 108 to detect the internal temperature of the hot water storage tank 108. The fourth temperature sensor T4 and the fifth temperature sensor T5 are used to monitor the temperature of the first heat exchanger 605.

[0041] In this embodiment, the air conditioning water tank module C includes an air conditioning water tank 701 , a second heat exchanger 612 and a third water pump 610 ; the air conditioning water tank module C also includes a first pressure valve 607 arranged on the pipeline between the second heat exchanger 612 and the expansion valve 606 .

[0042] In this embodiment, the hot water storage tank module A includes a hot water storage tank 108 , a first water pump 107 , a first solenoid valve 104 , a first check valve 106 , a first heat exchanger 605 and a second water pump 601 .

[0043] In this embodiment, the domestic water tank module B includes a domestic water tank 622 , a third heat exchanger 620 and a fourth water pump 618 ; the domestic water tank module B also includes a second pressure valve 614 arranged on the pipeline between the third heat exchanger 620 and the multi-way valve 613 .

[0044] The air conditioning and domestic hot water PTV heat pump system of the utility model can realize the following three modes:

[0045] Mode 1: Start domestic hot water and air conditioning heating mode

[0046] After running for about 1 minute, the temperature measurement module detects that the temperature of the domestic water tank 622 and the air conditioning water tank 701 is within the set range, then only the second water pump 601, the third water pump 610, and the fourth water pump 618 circulate to perform heat exchange. Exemplarily, in this mode, the suitable temperature setting value range of the domestic water tank 622 is 45°C to 50°C and the suitable temperature setting value range of the air conditioning water tank 701 is 30°C to 40°C. The temperature setting value range of the domestic water tank 622 and the air conditioning water tank 701 is determined according to the actual situation and is not limited here.

[0047] When the temperature of the domestic water tank 622, for example, 45°C, and the temperature of the air-conditioning water tank 701, for example, both are 30°C, and are lower than the set value, the compressor 617 is started, giving priority to the domestic water tank 622. When the temperature reaches the set upper limit of 50°C, the temperature measurement module is detected and fed back to the controller, and the fourth water pump 618 stops circulating, and the second water pump 601, the third water pump 610 and the compressor continue to work until the temperature of the heating air-conditioning water tank 701 reaches 40°C and stops. The temperature measurement module also includes the tenth temperature sensor T10 and the eleventh temperature sensor T11, and the controller includes the first controller 615. Therefore, the temperature measurement module detects and feeds back to the controller, that is, the temperature sensors T10 and T11 detect and feed back to the first controller 615. The temperature measurement module also includes a ninth temperature sensor T9 for monitoring the temperature of the third heat exchanger 620.

[0048] In this embodiment, the first heat exchanger 605 , the second heat exchanger 612 , and the third heat exchanger 620 are all plate heat exchangers, but the present invention is not limited thereto.

[0049] In this embodiment, the multi-way valve 613 may be a four-way valve. In some embodiments, a five-way valve, a six-way valve, etc. may also be used, but the invention is not limited thereto.

[0050] The working steps for starting the domestic hot water and air conditioning heating modes include: the low-grade heat from the hot water storage tank 108 enters the first heat exchanger 605 equivalent to the evaporator of the heat pump through the second water pump 601 for heat exchange, so that the refrigerant inside the first heat exchanger 605 is heat exchanged, and enters the compressor 617 through the multi-way valve 613 and the liquid storage tank 616. The high-temperature liquid at this time enters the third heat exchanger 620 equivalent to the condenser of the heat pump for heat exchange. This heat exchange is completed by the fourth water pump 618 until the temperature of the domestic water tank 622 reaches the temperature setting value of the domestic water tank 622 and stops.

[0051] Exemplarily, the temperature setting value of the domestic water tank 622 is 50°C. In some embodiments, other values ​​may also be used, which are not limited here. Exemplarily, it is explained here that the temperature of the domestic water tank, such as 4-28°C, can be converted by the PVT component 101, and the heat pump heats the domestic water tank 622 from 28°C to 50°C. After the temperature of the domestic water tank 622 reaches the set value, the fourth water pump 618 stops, and the heat enters the second heat exchanger 612 equivalent to the condenser through the multi-way valve 613, the expansion valve 606, and returns to the first heat exchanger 605 for the next cycle, and the heat of the second heat exchanger 612 is exchanged to the air-conditioning water tank 701 through the third water pump 610 until the temperature of the air-conditioning water tank 701 The temperature setting value system stops, exemplarily, the temperature setting value of the air-conditioning water tank 701 is 40°C; in some embodiments, other values ​​may also be used, which are not limited here. All completed actions are completed by the temperature measurement module detecting and sending to the controller. In one embodiment, the heat storage module A, the domestic water tank module B, and the air conditioning water tank module C complete the actions of starting the domestic hot water and air conditioning heating mode, starting the air conditioning cooling mode, and the domestic hot water and air conditioning cooling mode by detecting related sensors and sending them to the first controller 615.

[0052] Mode 2: Start air conditioning cooling mode

[0053] Exemplarily, in this mode, the suitable temperature range of the air-conditioning water tank is 7°C-20°C. In other embodiments, other range values ​​can be taken according to actual conditions, and are not limited to this. The controller starts the second water pump 601 and the third water pump 610. After running for about 1 minute, the temperature measurement module detects that the temperature of the air-conditioning water tank 701 is higher than 20°C, and then starts the compressor 617. The first refrigeration cycle begins. The air-conditioning water tank 701, which is composed of an inner tank, a thermal insulation layer, an outer shell and multiple water inlets and outlets, enters the second heat exchanger 612 through the third water pump 610, which is equivalent to the evaporator for heat exchange. The exchanged heat enters the multi-way valve 613, the third heat exchanger 620, to the compressor 617, the liquid storage tank 616, the first heat exchanger 605, and the expansion valve 606, and returns to the second heat exchanger 612 to complete a refrigeration cycle. When the energy passes through the first heat exchanger 605, which is equivalent to the condenser, the second water pump 601 circulates and transfers the high-temperature heat to the hot water storage tank 108 until the temperature of the air-conditioning water tank 701 reaches the set temperature of 7°C of the air-conditioning water tank 701 and stops. At this time, the third heat exchanger 620 is only a passage. The temperature of the air conditioning water tank 701 decreases, the temperature of the hot water storage tank 108 increases, and the energy conversion device is a water source heat pump. In one embodiment, the temperature measurement module also includes a seventh temperature sensor T7 and a sixth temperature sensor T6 for measuring the water temperature of the air conditioning water tank 701.

[0054] Mode 3: Domestic hot water and air conditioning refrigeration mode

[0055] When this mode is started, the energy from the air-conditioning water tank 701 enters the second heat exchanger 612 equivalent to the evaporator through the third water pump 610, and performs energy exchange. After entering the compressor 617, the high-temperature energy is transferred to the third heat exchanger 620 condenser, and the heat is circulated and stored in the domestic water tank 622 through the second water pump 601 until the temperature reaches 50°C. The second water pump 601 stops. At this time, the temperature of the air-conditioning water tank 701 has not reached the set value of 7°C, and the heat reaches the first heat exchanger 605 condenser. The heat is exchanged to the hot water storage tank 108 through the first water pump 107 until the air-conditioning water tank 701 reaches 7°C and stops. The whole process is a dynamic process. For example, the suitable temperature setting range of the air-conditioning water tank 701 is 7°C-20°C, and the suitable temperature setting range of the domestic water tank 622 is 45°C-50°C, which is not limited to this. If any set value exceeds the set upper or lower limit, all modes are automatically started and converted to each other to meet the demand.

[0056] The above processes are all completed by various sensors, water pumps, and heat exchangers, and the control operations are all executed by the controller.

[0057] See also Figure 3 As shown, an overheating prevention module D for preventing the hot water storage tank 108 from overheating is also included, and the overheating prevention module D is connected to the hot water storage tank 108 .

[0058] The heat generated by the PVT component 101 is converted into the hot water storage tank 108. If the temperature of the hot water storage tank 108 is high, it can reversibly affect the temperature of the PVT component 101. Therefore, adding an overheating protection module D can prevent heat from being transferred to the PVT component 101.

[0059] In this embodiment, the overheating prevention module D includes a fifth water pump 202 and a radiator 203. The fifth end of the hot water storage tank 108 is connected to the first end of the radiator 203 through the fifth water pump 202, and the second end of the radiator 203 is connected to the sixth end of the hot water storage tank 108.

[0060] Since the heat generated by the PVT assembly 101 is converted into the hot water storage tank 108, the higher temperature of the hot water storage tank 108 can reversibly affect the temperature of the PVT assembly 101. The air conditioning and domestic hot water PTV heat pump system of the utility model adds an anti-overheating module to prevent heat from being transferred to the PVT assembly 101.

[0061] Principle of overheat prevention module D: The heat generated by the PVT component 101 and the air conditioning cooling mode gradually increases the temperature of the hot water storage tank 108, and the increase in temperature will reduce the power generation of the PVT component 101. In order to control the hot water storage tank 108 between the fifth preset temperature and the sixth preset temperature in the first temperature range, the temperature measurement module transmits the detected temperature to the controller for calculation. When the temperature reaches the sixth preset temperature, the fifth water pump 202 and the radiator 203 are controlled to start. When the temperature drops to the fifth preset temperature, the radiator 203 stops. In this way, the refrigeration coefficient (COP) of the heat pump during refrigeration is guaranteed to be the highest, and the temperature of the PVT component 101 can work under lower conditions and generate higher power. The fifth water pump 202 and the radiator 203 are operated in parallel. Among them, the temperature measurement module also includes a third temperature sensor T3, and the controller also includes a third controller 204. The third temperature sensor T3 is set at the fifth end of the hot water storage tank. The detected temperature is transmitted to the third controller 204 through the third temperature sensor T3. That is, the fifth water pump 202 starts under the condition that T3 = the sixth preset temperature, and the fourth water pump stops under the condition that T3 = the fifth preset temperature. The radiator 203 includes a fan coil unit and a fan.

[0062] Exemplarily, the value range of the fifth preset temperature is 20°C to 26°C, and the value range of the sixth preset temperature is 26°C to 30°C. In other embodiments, the value range of the fifth preset temperature and the value range of the sixth preset temperature can be set according to actual conditions, and are not limited here. In one embodiment, the fifth preset temperature is 24°C, and the sixth preset temperature is 28°C.

[0063] In this embodiment, an energy-saving control module E is further included, and the domestic water tank 622 and the PVT assembly 101 are connected to the energy-saving control module E respectively.

[0064] Assume that the domestic water tank 622 is heated from 4 degrees to 50 degrees. If it is achieved by the compressor 617, the compressor 617 has high power and high power consumption. This system saves energy. After the temperature and heat in the PVT component 101 are converted to the hot water storage tank 108, the remaining temperature and heat are converted to the domestic water tank 622 to heat the domestic water tank 622.

[0065] See also Figure 4 As shown, the energy-saving control module E includes a sixth water pump 403, a second solenoid valve 402, a second one-way valve 404, a first relay 501, and a current transformer 502 for sensing whether the sixth water pump 403 is powered on and controlling the first relay 501 to be disconnected;

[0066] The first end of the second solenoid valve 402 is connected to the third end of the domestic water tank 622, and the second end of the second solenoid valve 402 is connected to the outlet end of the heat transfer pipe 2; the inlet end of the heat transfer pipe 2 is also connected to the fourth end of the domestic water tank 622 through the second one-way valve 404 and the sixth water pump 403 in sequence, and the current transformer 502 is arranged on the sixth water pump 403; the first water pump 107 is connected to the first relay 501, and the first relay 501 is connected to the current transformer 502.

[0067] Assume that the domestic water tank 622 is heated from 4 degrees to 50 degrees. If it is realized by the compressor 617, the compressor has high power and high power consumption. This system is energy-saving. After the temperature and heat in the PVT component 101 are converted to the hot water storage tank 108, the remaining temperature and heat are converted to the domestic water tank 622 through the current transformer 502 to heat the domestic water tank 622. In this embodiment, the hot water storage tank 108 is heated first, and the domestic water tank 622 can also be heated first after the circuit is modified. The maximum temperature can be adjusted according to the situation. The temperature heating of the domestic water tank 622 is realized by heating in two parts. The first step is that the heat exchange of the PVT component 101 is realized to heat to a certain temperature, and the second step is realized by the compressor 617 heat pump.

[0068] Principle of energy-saving control module E: The temperature measuring module detects the temperature of the outlet end of the heat-conducting pipe 2 and the temperature inside the domestic water tank 622 through the calculation of the controller. When the temperature t12 of the PVT assembly 101 and the temperature t13 of the domestic water tank 622 reach the seventh preset temperature, the second solenoid valve 402 and the sixth water pump 403 start to run in parallel, and stop when the eighth preset temperature is reached. The seventh preset temperature is greater than the eighth preset temperature; and the temperature t13 of the domestic water tank 622 reaches the ninth preset temperature, and the sixth water pump 403 stops. Therefore, the controller works as follows: t12-t13 = the seventh preset temperature, the sixth water pump 403 is started; t12-t13 = the eighth preset temperature, the sixth water pump 403 is stopped, and t13 reaches the ninth preset temperature, and the sixth water pump 403 stops. The value range of the seventh preset temperature is 3°C to 10°C, the value range of the eighth preset temperature is 1°C to 5°C, and the value range of the ninth preset temperature is 20°C to 30°C. Exemplarily, the seventh preset temperature is 6°C, the eighth preset temperature is 2°C, and the ninth preset temperature is 28°C.

[0069] In this embodiment, the temperature measurement module also includes a twelfth temperature sensor T12 for detecting the outlet temperature of the heat conduction pipe 2 and a thirteenth temperature sensor T13 for detecting the internal temperature of the domestic water tank 622; the twelfth temperature sensor T12 is fixed at the outlet end of the heat conduction pipe; the thirteenth temperature sensor T13 is fixed at the third end of the domestic water tank 622.

[0070] The controller further includes a fourth controller 401 , and the twelfth temperature sensor T12 , the thirteenth temperature sensor T13 and the sixth water pump 403 are respectively connected to the fourth controller 401 .

[0071] The current transformer 502 is mounted on an electric wire of the sixth water pump 403. When current is detected passing through the line, the switch on the current transformer 502 is turned on, so that the connected coil of the first relay 501 disconnects the common node from the normally open contact, and the first water pump 107 is not powered. When the sixth water pump 403 stops working, there is no electricity on the current transformer 502, causing the normally closed contact of the first relay 501 to be connected, so that the first water pump 107 is under the control of the second controller 103 to start and stop.

[0072] In this embodiment, an indoor air-conditioning control module F is also included, and the indoor air-conditioning control module F is connected to the air-conditioning water tank 701 .

[0073] See also Figure 5As shown, the indoor air-conditioning control module F includes an air-conditioning controller 702, a third one-way valve 703, a seventh water pump 704, a coil 705, a room temperature controller 706, an electric actuator 707, a control water valve 708, a water distributor 709 and a water collector 710; the third end of the air-conditioning water tank 701 is connected to the fourth end of the air-conditioning water tank 701 through the seventh water pump 704, the third one-way valve 703, the coil 705, the water collector 710 in sequence; the air-conditioning controller 702 is connected to the seventh water pump 704.

[0074] Principle of indoor air conditioning control module F: hot water or cold water in air conditioning water tank 701 passes through seventh water pump 704, second one-way valve 404, water distributor 709 including electric actuator, water valve, etc., coil 705 and then passes through water collector 710, and returns to air conditioning water tank 701. During heating, indoor temperature is set at 18-22℃ and the temperature can be adjusted higher by indoor room temperature controller 706; when it is higher than 22℃, electric actuator 707 is closed, and there is pressure from third one-way valve 703 to control water distributor 709, and the pressure is set by air conditioning controller 702, for example, set to 2-4bar. When the air conditioning controller 702 detects that the pressure is higher than 4 bar, the seventh water pump 704 stops working; when the control water valve 708 is opened, the air conditioning controller 702 detects that the pressure is less than 2 bar, then the power is turned on to start the seventh water pump 704. Since the control water valves 708 on the water distributor 709 are all connected in parallel, any one of them will be linked to the action of the air conditioning controller 702 to start and stop the seventh water pump 704, thereby achieving very low-cost temperature control, thereby replacing the existing high-priced control equipment on the market.

[0075] In this embodiment, the coil 705 may be a floor heating coil or a fan coil.

[0076] Antifreeze is used inside the pipes of the indoor air conditioning control module to solve the scaling problem of pipes and water tanks.

[0077] See also Figure 6 As shown, it also includes a photovoltaic energy storage grid-connected module G, which is connected to the PVT component 101.

[0078] In this embodiment, the photovoltaic energy storage grid-connected module G includes a battery 302 and an inverter controller 301 , and the PVT component 101 and the battery 302 are connected to the inverter controller 301 , respectively.

[0079] The PVT components 101 are connected in series and in parallel in multiple groups, meeting the voltage, current and power parameter requirements of the inverter controller 301, and are close to the capacity of the battery 302. When the PVT components 101 receive the direct current power generated by sunlight and entering the inverter controller 301, it can be directly connected to the Internet after inversion, or charge the battery 302. When the direct current power of the battery 302 is used up, the city power can be directly used to supplement it. When there is sunlight, solar power is used first.

[0080] The electricity in the battery 302 is used to drive water pumps, plate heat exchangers, sensors and other equipment. When electricity is needed, the battery power is used first. If the power is insufficient, the mains power is used. Heat exchange such as heating or cooling is mostly achieved by heat energy circulation exchange, and part of the electric energy is also used to ensure that the heat energy circulation achieves heat exchange.

[0081] See also Figure 7 As shown, the PVT assembly 101 also includes a photovoltaic panel, a heat collecting plate 1 and a bottom frame, the heat collecting plate 1 is arranged on the back side of the photovoltaic panel, the heat conducting pipe 2 is arranged on the side of the heat collecting plate 1 away from the photovoltaic panel, the heat collecting plate 1 and the bottom frame constitute a containing cavity, a heat conducting component 3 is arranged between the heat collecting plate 1 and the heat conducting pipe 2, a heat insulating layer 4 is arranged on the side of the heat conducting pipe 2 away from the heat conducting component 3, and the heat conducting component 3, the heat conducting pipe 2 and the heat insulating layer 4 are all located in the containing cavity. The PVT assembly of the utility model can better contribute to the recovery of thermal energy by arranging the heat conducting component 3 and the heat insulating layer 4.

[0082] In this embodiment, the material of the heat conducting component 3 is a polymer material. In some embodiments, the material of the heat conducting component 3 can also be other types of materials, which are not limited here.

[0083] In this embodiment, the bottom frame includes a frame body 5 and a bottom plate 6, and the frame body 5 is arranged between the bottom plate 6 and the heat collecting plate 1. The PVT assembly 101 also includes a battery box and wires.

[0084] In this embodiment, the photovoltaic cell panel includes a stacked encapsulation layer 7, a first adhesive film 8, a battery assembly 9, a second adhesive film 10 and a back plate 11. Exemplarily, the first adhesive film 8 and the second adhesive film 10 can be EVA. In other embodiments, adhesive films of other materials can also be used, which is not limited here. The encapsulation layer 7 can be glass. In other embodiments, other materials can also be used, which is not limited to this. The photovoltaic cell panel can be monocrystalline silicon, monocrystalline silicon, thin film battery or perovskite, etc.

[0085] In this embodiment, the heat collecting plate 1 and the back plate 11 are connected via a third adhesive film 12 .

[0086] The air conditioning and domestic hot water PTV heat pump system of the utility model uses an indirect system, has a PVT preheating and insulation water tank, and the heat pump has been debugged during manufacturing to achieve the best performance and best safety, and can produce hot water, refrigeration and air conditioning, heating and air conditioning, and any combination of these three functions or work independently, so that a system can meet the energy needs of cold, heat and electricity of the building. With the progress of materials science and electronic technology, the performance of PVT heat pump systems is constantly improving. Not only the photoelectric conversion efficiency is improved, but the use of efficient heat exchangers also improves the utilization efficiency of thermal energy, and the cost of indoor temperature control systems is greatly reduced. And an isolated heat exchange device is provided in each operating mode to solve potential problems related to refrigerant imbalance. In short, the solar photovoltaic and light-thermal integrated component heat pump system is an efficient, environmentally friendly and economical renewable energy solution. It can not only improve energy utilization efficiency and reduce environmental pollution, but also increase power generation by about 10%. A system solves all energy problems of hot, cold, air-conditioning, hot water and power generation for users, bringing economic and social benefits. With the continuous advancement of technology, cost reduction and policy support, this integrated system is expected to be more widely used and developed in the future.

[0087] It should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0089] It should be understood that the application of the utility model is not limited to the above examples. For ordinary technicians in the field, they can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model. Ordinary technicians in the field can understand that all or part of the processes of the above embodiments are implemented, and equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims

1. An air conditioning and domestic hot water PTV heat pump system, characterized in that: It includes a PVT component, a hot water storage tank, a first water pump, a first solenoid valve, a first non-return valve, a first heat exchanger, a second water pump, an air conditioning water tank, an expansion valve, a second heat exchanger, a third water pump, a domestic water tank, a third heat exchanger and a fourth water pump, a controller, a multi-way valve, a liquid storage tank, a compressor and a temperature measuring module for detecting the heat generated by the PVT component and the temperature in each water tank of the hot water storage tank, the domestic water tank and the air conditioning water tank; the PVT component includes a heat conduction pipe; The first end of the hot water storage tank is connected to the inlet end of the heat transfer pipe through the first water pump and the first one-way valve in sequence; the second end of the hot water storage tank is connected to the outlet end of the heat transfer pipe through the first solenoid valve; The third end of the hot water storage tank is connected to the first end of the multi-way valve, and the fourth end of the hot water storage tank is connected to the first end of the second heat exchanger through the expansion valve; the second end of the second heat exchanger is connected to the second end of the multi-way valve; the third end of the second heat exchanger is connected to the first end of the air-conditioning water tank; the fourth end of the second heat exchanger is connected to the second end of the air-conditioning water tank through the third water pump; the first end of the third heat exchanger is connected to the third end of the multi-way valve, and the second end of the third heat exchanger is connected to the fourth end of the multi-way valve through the compressor and the liquid storage tank in sequence, and the fourth end of the multi-way valve is communicated with the first end of the multi-way valve; the third end of the third heat exchanger is connected to the first end of the domestic water tank, and the fourth end of the third heat exchanger is connected to the second end of the domestic water tank; The first water pump, the first solenoid valve, the second water pump, the third water pump, the fourth water pump, the multi-way valve and the compressor are respectively connected to the controller.

2. The air conditioning and domestic hot water PTV heat pump system according to claim 1, characterized in that: It also includes an overheating prevention module for preventing the hot water storage tank from overheating, and the overheating prevention module is connected to the hot water storage tank.

3. The air conditioning and domestic hot water PTV heat pump system according to claim 2, characterized in that: The overheating prevention module includes a fifth water pump and a radiator. The fifth end of the hot water storage tank is connected to the first end of the radiator through the fifth water pump, and the second end of the radiator is connected to the sixth end of the hot water storage tank.

4. The air conditioning and domestic hot water PTV heat pump system according to any one of claims 1 to 3, characterized in that: It also includes an energy-saving control module, and the domestic water tank and the PVT component are respectively connected to the energy-saving control module.

5. The air conditioning and domestic hot water PTV heat pump system according to claim 4, characterized in that: The energy-saving control module includes a sixth water pump, a second solenoid valve, a second one-way valve, a first relay, and a current transformer for sensing whether the sixth water pump is powered on and controlling the first relay to be turned on and off; The first end of the second solenoid valve is connected to the third end of the domestic water tank, and the second end of the second solenoid valve is connected to the outlet end of the heat transfer pipe; the inlet end of the heat transfer pipe is also connected to the fourth end of the domestic water tank through the second one-way valve and the sixth water pump in sequence, and the current transformer is arranged on the sixth water pump; the first water pump is connected to the first relay, and the first relay is connected to the current transformer.

6. The air conditioning and domestic hot water PTV heat pump system according to claim 1, 2, 3 or 5, characterized in that: It also includes an indoor air-conditioning control module, which is connected to the air-conditioning water tank.

7. The air conditioning and domestic hot water PTV heat pump system according to claim 6, characterized in that: The indoor air conditioning control module includes an air conditioning controller, a third one-way valve, a seventh water pump, a coil, a room temperature controller, an electric actuator, a control water valve, a water distributor and a water collector; the third end of the air conditioning water tank is connected in sequence through the seventh water pump, the third one-way valve, the coil, the water collector and the fourth end of the air conditioning water tank; the air conditioning controller is connected to the seventh water pump.

8. The air conditioning and domestic hot water PTV heat pump system according to claim 1, 2, 3, 5 or 7, characterized in that: It also includes a photovoltaic energy storage grid-connected module, which is connected to the PVT component.

9. The air conditioning and domestic hot water PTV heat pump system according to claim 8, characterized in that: The photovoltaic energy storage grid-connected module includes a battery and an inverter controller, and the PVT component and the battery are respectively connected to the inverter controller.

10. The air conditioning and domestic hot water PTV heat pump system according to claim 1 or 2 or 3 or 5 or 7 or 9, characterized in that: The PVT component also includes a photovoltaic cell panel, a heat collecting plate and a bottom frame, the heat collecting plate is arranged on the back side of the photovoltaic cell panel, the heat conducting pipe is arranged on the side of the heat collecting plate away from the photovoltaic cell panel, the heat collecting plate and the bottom frame constitute a accommodating cavity, a heat conducting component is arranged between the heat collecting plate and the heat conducting pipe, a heat insulating layer is arranged on the side of the heat conducting pipe away from the heat conducting component, and the heat conducting component, the heat conducting pipe and the heat insulating layer are all located in the accommodating cavity.

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