Semiconductor refrigeration system based on solar energy, wind energy and electric energy

Abstract

The utility model provides a semiconductor refrigeration system based on solar energy, wind energy and electric energy, and relates to the field of semiconductor refrigeration equipment. The system comprises a wind power supply module, a photovoltaic power supply module, a household power grid power supply module, an electric energy storage module, a semiconductor refrigeration refrigerator module and a waste heat recycling module. The wind power supply module, the photovoltaic power supply module and the household power grid power supply module are connected with the electric energy storage module, the electric energy storage module supplies power to the semiconductor refrigeration refrigerator module, and the waste heat recycling module is connected with the heating side of the semiconductor refrigeration refrigerator module. Wind energy, solar energy and a household power grid are adopted for complementary power supply, and the electric energy consumption of the household power grid is reduced; solar energy and wind energy adopt a modular integrated design, effective integration of solar energy and wind power generation is realized, and the energy utilization rate is improved; heat generated by the semiconductor chilling plate and the PVT photovoltaic panel is recycled, the energy efficiency and sustainability of the system are improved, and the purposes of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The utility model relates to the field of semiconductor refrigeration equipment, in particular to a semiconductor refrigeration system based on solar energy, wind energy and electric energy. Background Art

[0002] Semiconductor refrigeration is also known as electronic refrigeration or thermoelectric refrigeration. It uses a PN junction composed of special semiconductor materials to form a thermocouple pair to produce the Peltier effect, which is a new refrigeration method through direct current refrigeration. It is known as one of the world's three major refrigeration methods along with compression refrigeration and absorption refrigeration.

[0003] Semiconductor refrigeration refrigerators, also known as thermoelectric refrigerators, use semiconductor refrigeration chips to achieve refrigeration through high-efficiency annular double-layer heat pipe heat dissipation and conduction technology and automatic voltage and current conversion control technology. No refrigeration medium and mechanical moving parts are required, which solves the application problems of traditional mechanical refrigeration refrigerators such as medium pollution and mechanical vibration. For example, a semiconductor refrigeration refrigerator provided by CN 219829196 U adopts the technology of semiconductor refrigeration chip refrigeration. However, most of the semiconductor refrigeration refrigerators disclosed in the above prior art have a single power supply mode, and the heat generated by the semiconductor refrigeration chip is not recycled.

[0004] In the "dual carbon" era, new energy will be the largest source of green electricity in the future. Gansu Province is rich in wind and solar resources. Combining the local abundant solar and wind energy resources and making comprehensive use of them can improve energy utilization, reduce dependence on traditional energy, and thus promote the development of renewable energy. Utility Model Content

[0005] In view of this, the utility model provides a semiconductor refrigeration system based on solar energy, wind energy and electric energy, which uses wind energy, solar energy and household power grid for complementary power supply and reasonably recycles the heat at the hot end of the semiconductor refrigeration plate.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is a semiconductor refrigeration system based on solar energy, wind energy and electric energy, including a wind power supply module, a photovoltaic power supply module, a home grid power supply module, an electric energy storage module, a semiconductor refrigeration refrigerator module, and a waste heat recovery module; the wind power supply module, the photovoltaic power supply module, and the home grid power supply module are respectively connected to the electric energy storage module, the electric energy storage module supplies power to the semiconductor refrigeration refrigerator module, and the waste heat recovery module is connected to the heating side of the semiconductor refrigeration refrigerator module;

[0007] The semiconductor refrigeration refrigerator module comprises a semiconductor refrigeration sheet, a refrigerator shell, and a refrigerator liner. The refrigerator liner is installed inside the refrigerator shell through a plurality of mounting blocks provided with first through holes. The cold ends of a plurality of uniformly arranged semiconductor refrigeration sheets extend into the gap between the refrigerator shell and the refrigerator liner.

[0008] The waste heat recovery and utilization module includes a waste heat recovery box and a hot water storage tank. The waste heat recovery box includes a box body and a heat exchange substrate arranged in the box body. The hot end of the semiconductor refrigeration plate is tightly fitted with the side wall of the heat exchange substrate. A water distribution cavity and a water collecting cavity are arranged inside the heat exchange substrate. The upper end of the water inlet pipe arranged in the middle of the top of the heat exchange substrate is connected to the cold water pipe, and the lower end of the water inlet pipe is connected to the water distribution cavity. The water distribution cavity and the water collecting cavity are connected through a number of equidistant branch flow channels. The upper end of the water outlet pipe arranged in the middle of the bottom of the heat exchange substrate is connected to the water collecting cavity, and the lower end of the water outlet pipe is connected to the hot water storage tank through a water supply pipe.

[0009] Furthermore, the wind power supply module includes a wind turbine, a generator, and a first rectifier, and the rotating shaft of the wind turbine is connected to the input shaft of the generator; the photovoltaic power supply module includes a solar PVT collector, and the solar PVT collector includes a frame and a PVT photovoltaic panel installed in the frame; the home grid power supply module includes a home grid and a second rectifier; the energy storage module includes a charge and discharge controller and a battery; the generator and the home grid are electrically connected to the charge and discharge controller through the first rectifier and the second rectifier respectively, the PVT photovoltaic panel is electrically connected to the charge and discharge controller, and the battery is electrically connected to the charge and discharge controller; the battery supplies power to the semiconductor refrigeration plate.

[0010] Furthermore, a cooling mechanism is provided in the gap between the refrigerator shell and the refrigerator inner tank, and the cooling mechanism includes a cooling substrate, one side of which is tightly fitted with the cold end of the semiconductor refrigeration plate, and the other side is provided with a plurality of equidistantly arranged strip cooling fins, and a plurality of second through holes are opened on the cooling fins.

[0011] Furthermore, a cold water valve is arranged on the cold water pipe, a hot water pipe is arranged at the lower part of the hot water storage tank, and a hot water valve is arranged on the hot water pipe.

[0012] Furthermore, the cold water valve and the hot water valve both use solenoid valves, a first temperature sensor is arranged in the refrigerator inner tank, a PLC controller is installed on the refrigerator shell, a liquid level sensor and a second temperature sensor are arranged inside the hot water storage tank, and the cold water valve, the hot water valve, the liquid level sensor, the first temperature sensor, and the second temperature sensor are electrically connected to the PLC controller respectively.

[0013] Furthermore, a water pump is provided on the pipeline between the water outlet pipe of the heat exchange substrate and the water inlet of the hot water storage tank.

[0014] Furthermore, the solar PVT collector also includes a heat conduction plate and a heat exchange tube. The heat conduction plate is arranged at the bottom of the PVT photovoltaic panel, the heat exchange tube is arranged at the bottom of the heat conduction plate, and a three-way solenoid valve is arranged on the pipeline between the water pump and the water inlet of the hot water storage tank. The water inlet of the three-way solenoid valve is connected to the water pump, one of the outlets of the three-way solenoid valve is connected to the heat exchange tube through a water inlet branch pipe, and the other outlet of the three-way solenoid valve is connected to the water inlet of the hot water storage tank. The heat exchange tube is also connected to the water inlet of the hot water storage tank through a water outlet branch pipe, and the three-way solenoid valve is electrically connected to the PLC controller.

[0015] Preferably, the heat exchange tube adopts a serpentine tube structure.

[0016] Preferably, the heat exchange substrate is made of copper.

[0017] Preferably, the branch flow channel adopts a straight flow channel, an S-shaped flow channel or a Tesla valve flow channel.

[0018] Due to the adoption of the above technical solution, the beneficial technical effects of the utility model are:

[0019] 1. The semiconductor refrigeration system based on solar energy, wind energy and electric energy of the utility model adopts wind energy, solar energy and household power grid for complementary power supply, with various power supply forms, reducing the power consumption of household power grid; solar energy and wind energy adopt modular integrated design to realize the effective integration of solar energy and wind power generation, improve energy utilization, reduce dependence on traditional energy, and thus promote the development of renewable energy.

[0020] 2. The semiconductor refrigeration system based on solar energy, wind energy and electric energy of the utility model can perform heat exchange and temperature rise of cold water twice in succession, recover the heat generated by the semiconductor refrigeration sheet and PVT photovoltaic panel, store it in the water storage tank for bathing, heating, etc., make full use of waste heat, improve the energy efficiency and sustainability of the system, and achieve the purpose of energy saving and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a semiconductor refrigeration system based on solar energy, wind energy and electric energy of the utility model;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure of the solar PVT collector;

[0023] Figure 3 This is a main cross-sectional view of the heat exchange substrate in Example 1 of the utility model;

[0024] Figure 4 This is a main cross-sectional view of the heat exchange substrate in Example 2 of the utility model;

[0025] Figure 5This is a main cross-sectional view of the heat exchange substrate in Example 3 of the utility model;

[0026] Figure numerals: 1-wind turbine, 2-generator, 3-first rectifier, 4-solar PVT collector, 401-frame, 402-photovoltaic panel, 403-heat conduction plate, 404-heat exchange tube, 5-charge and discharge controller, 6-home power grid, 7-second rectifier, 8-battery, 9-refrigerator shell, 10-refrigerator liner, 11-mounting block, 12-first through hole, 13-semiconductor refrigeration sheet, 14-cooling substrate, 15-cooling fin, 16-second through hole , 17-first temperature sensor, 18-PLC controller, 19-box, 20-heat exchange substrate, 2001-water inlet main pipe, 2002-water distribution chamber, 2003-branch flow channel, 2004-water collecting chamber, 2005-water outlet pipe, 21-cold water pipe, 22-cold water valve, 23-water pump, 24-three-way valve, 25-water inlet branch pipe, 26-water outlet branch pipe, 27-heat storage tank, 28-second temperature sensor, 29-liquid level sensor, 30-hot water valve. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below through preferred embodiments.

[0028] Example 1

[0029] Please see attached Figure 1-3 As shown, the present embodiment provides a semiconductor refrigeration system based on solar energy, wind energy and electric energy, including a wind power supply module, a photovoltaic power supply module, a home grid 6 power supply module, an electric energy storage module, a semiconductor refrigeration refrigerator module, and a waste heat recovery module; the wind power supply module, the photovoltaic power supply module, and the home grid 6 power supply module are respectively connected to the electric energy storage module, the electric energy storage module supplies power to the semiconductor refrigeration refrigerator module, and the waste heat recovery module is connected to the heating side of the semiconductor refrigeration refrigerator module;

[0030] The semiconductor refrigeration refrigerator module comprises a semiconductor refrigeration sheet 13, a refrigerator shell 9, and a refrigerator liner 10. The refrigerator liner 10 is installed inside the refrigerator shell 9 through a plurality of mounting blocks 11 provided with first through holes 12. The cold ends of a plurality of uniformly arranged semiconductor refrigeration sheets 13 extend into the gap between the refrigerator shell 9 and the refrigerator liner 10.

[0031] The waste heat recovery module includes a waste heat recovery box and a hot water storage tank 27. The waste heat recovery box includes a box body 19 and a heat exchange substrate 20 arranged in the box body 19. The hot end of the semiconductor refrigeration plate 13 is tightly fitted with the side wall of the heat exchange substrate 20. A water distribution chamber 2002 and a water collection chamber 2004 are arranged inside the heat exchange substrate 20. The upper end of a water inlet pipe 2001 arranged in the middle of the top of the heat exchange substrate 20 is connected to the cold water pipe 21, and the lower end of the water inlet pipe 2001 is connected to the water distribution chamber 2002. The water distribution chamber 2002 is connected to the water collection chamber 2004 through a number of equidistant branch flow channels 2003. The upper end of a water outlet pipe 2005 arranged in the middle of the bottom of the heat exchange substrate 20 is connected to the water collection chamber 2004, and the lower end of the water outlet pipe 2005 is connected to the hot water storage tank 27 through a water supply pipe.

[0032] Specifically, the wind power supply module includes a wind turbine 1, a generator 2, and a first rectifier 3, and the rotating shaft of the wind turbine 1 is connected to the input shaft of the generator 2; the photovoltaic power supply module includes a solar PVT collector 4, and the solar PVT collector 4 includes a frame 401 and a PVT photovoltaic panel 402 installed in the frame 401; the home grid 6 power supply module includes a home grid 6 and a second rectifier 7; the energy storage module includes a charge and discharge controller 5 and a battery 8; the generator 2 and the home grid 6 are electrically connected to the charge and discharge controller 5 through the first rectifier 3 and the second rectifier 7 respectively, the PVT photovoltaic panel 402 is electrically connected to the charge and discharge controller 5, and the battery 8 is electrically connected to the charge and discharge controller 5; the battery 8 supplies power to the semiconductor refrigeration plate 13.

[0033] Specifically, in order to improve the cooling efficiency, a cooling mechanism is further provided in the gap between the refrigerator shell 9 and the refrigerator inner tank 10, and the cooling mechanism includes a cooling substrate 14, one side of the cooling substrate 14 is tightly fitted with the cold end of the semiconductor refrigeration plate 13, and the other side thereof is provided with a plurality of equidistantly arranged strip cooling fins 15, and a plurality of second through holes 16 are opened on the cooling fins 15.

[0034] Specifically, a cold water valve 22 is provided on the cold water pipe 21, a hot water pipe is provided at the lower part of the hot water storage tank 27, and a hot water valve 30 is provided on the hot water pipe. The cold water valve 22 and the hot water valve 30 are both solenoid valves, a first temperature sensor 17 is provided in the refrigerator inner tank 10, a PLC controller 18 is installed on the refrigerator shell 9, a liquid level sensor 29 and a second temperature sensor 28 are provided inside the hot water storage tank 27, and the cold water valve 22, the hot water valve 30, the liquid level sensor 29, the first temperature sensor 17, and the second temperature sensor 28 are electrically connected to the PLC controller 18 respectively. A water pump 23 is provided on the pipeline between the water outlet pipe 2005 of the heat exchange substrate 20 and the water inlet of the hot water storage tank 27.

[0035] In this embodiment, the liquid level sensor 29 may be of model LFT3000, the first temperature sensor 17 and the second temperature sensor 28 may be of model HY-A069, and the PLC controller 18 may be Siemens S7 series PLC.

[0036] Specifically, the solar PVT collector 4 also includes a heat conduction plate 403 and a heat exchange tube 404. The heat conduction plate 403 is arranged at the bottom of the PVT photovoltaic panel 402, and the heat exchange tube 404 is arranged at the bottom of the heat conduction plate 403. A three-way solenoid valve is arranged on the pipeline between the water pump 23 and the water inlet of the hot water storage tank 27. The water inlet of the three-way solenoid valve is connected to the water pump 23, and one of the outlets of the three-way solenoid valve is connected to the heat exchange tube 404 through the water inlet branch pipe 25, and the other outlet of the three-way solenoid valve is connected to the water inlet of the hot water storage tank 27. The heat exchange tube 404 is also connected to the water inlet of the hot water storage tank 27 through the water outlet branch pipe 26, and the PLC controller 18 is electrically connected.

[0037] In this embodiment, the heat exchange tube 404 adopts a serpentine tube structure, the heat exchange substrate 20 is made of copper, and the branch flow channel 2003 adopts a straight flow channel.

[0038] In this embodiment, the electric energy generated by wind energy and solar energy conversion is stored in the storage battery 8 and supplied to the semiconductor cooling sheet 13, thereby reducing the electric energy consumption of the home grid 6. However, when the PVT photovoltaic panel 402 cannot work normally for a long time due to weather changes and other reasons, the home grid 6 or wind energy can be used to provide electric energy so that the system can operate normally around the clock.

[0039] Example 2

[0040] like Figure 4 As shown, different from Embodiment 1, in this embodiment, the branch flow channel 2003 adopts an S-shaped flow channel.

[0041] Example 3

[0042] like Figure 4 As shown, different from Example 1, in this embodiment, the branch flow channel 2003 adopts a Tesla valve type flow channel.

[0043] The working principle of the semiconductor refrigeration system based on solar energy, wind energy and electric energy of the utility model is as follows: when the semiconductor refrigeration plate 13 is working, the cold end of the semiconductor refrigeration plate 13 makes the temperature in the refrigerator lower, and the semiconductor heating end makes the temperature of the water in the branch flow channel 2003 in the heat exchange substrate 20 rise. When the outlet of the three-way solenoid valve flowing to the water inlet branch pipe 25 is closed, the water flowing out of the heat exchange substrate 20 is lifted by the water pump 23 and directly sent to the hot water storage tank 27. When the outlet of the three-way solenoid valve flowing to the water inlet branch pipe 25 is opened, the heat exchange substrate 20 is heated. The water flowing out of the hot base plate 20 is lifted by the water pump 23 and heated by the heat exchange tube 404 for secondary heat exchange, and then injected into the hot water storage tank 27. The hot water valve 30 is opened, and the hot water can be used for bathing, heating, etc.; when the water level in the hot water storage tank 27 drops to a certain position, the cold water valve 22 is opened to inject cold water, and when the water level in the hot water storage tank 27 reaches a certain position, the cold water valve 22 is closed, and the cycle works in this way; the first temperature sensor 17 detects the temperature in the refrigerator, and the second temperature sensor 28 is used to detect the water temperature in the hot water storage tank 27.

[0044] The above description is a preferred embodiment of the present invention, which is used to explain the technical solution of the present invention. Those skilled in the art can also make routine modifications, equivalent substitutions and improvements within the spirit and principles of the present invention.

Claims

1. A semiconductor refrigeration system based on solar energy, wind energy and electric energy, characterized in that: It includes a wind power supply module, a photovoltaic power supply module, a household power supply module, an electric energy storage module, a semiconductor refrigeration refrigerator module, and a waste heat recovery module; the wind power supply module, the photovoltaic power supply module, and the household power supply module are respectively connected to the electric energy storage module, the electric energy storage module supplies power to the semiconductor refrigeration refrigerator module, and the waste heat recovery module is connected to the heating side of the semiconductor refrigeration refrigerator module; The semiconductor refrigeration refrigerator module comprises a semiconductor refrigeration sheet, a refrigerator shell, and a refrigerator liner. The refrigerator liner is installed inside the refrigerator shell through a plurality of mounting blocks provided with first through holes. The cold ends of a plurality of uniformly arranged semiconductor refrigeration sheets extend into the gap between the refrigerator shell and the refrigerator liner. The waste heat recovery and utilization module includes a waste heat recovery box and a hot water storage tank. The waste heat recovery box includes a box body and a heat exchange substrate arranged in the box body. The hot end of the semiconductor refrigeration plate is tightly fitted with the side wall of the heat exchange substrate. A water distribution cavity and a water collecting cavity are arranged inside the heat exchange substrate. The upper end of the water inlet pipe arranged in the middle of the top of the heat exchange substrate is connected to the cold water pipe, and the lower end of the water inlet pipe is connected to the water distribution cavity. The water distribution cavity and the water collecting cavity are connected through a number of equidistant branch flow channels. The upper end of the water outlet pipe arranged in the middle of the bottom of the heat exchange substrate is connected to the water collecting cavity, and the lower end of the water outlet pipe is connected to the hot water storage tank through a water supply pipe.

2. A semiconductor refrigeration system based on solar energy, wind energy and electric energy according to claim 1, characterized in that: The wind power supply module includes a wind turbine, a generator, and a first rectifier, and the rotating shaft of the wind turbine is connected to the input shaft of the generator; the photovoltaic power supply module includes a solar PVT collector, and the solar PVT collector includes a frame and a PVT photovoltaic panel installed in the frame; the home grid power supply module includes a home grid and a second rectifier; the energy storage module includes a charge and discharge controller and a battery; the generator and the home grid are electrically connected to the charge and discharge controller through the first rectifier and the second rectifier respectively, the PVT photovoltaic panel is electrically connected to the charge and discharge controller, and the battery is electrically connected to the charge and discharge controller; the battery supplies power to the semiconductor refrigeration plate.

3. A semiconductor refrigeration system based on solar energy, wind energy and electric energy according to claim 2, characterized in that: A cooling mechanism is also provided in the gap between the refrigerator shell and the refrigerator inner tank. The cooling mechanism includes a cooling substrate. One side of the cooling substrate is tightly fitted with the cold end of the semiconductor refrigeration plate, and the other side is provided with a plurality of equidistantly arranged strip cooling fins, and a plurality of second through holes are opened on the cooling fins.

4. A semiconductor refrigeration system based on solar energy, wind energy and electric energy according to claim 1, characterized in that: A cold water valve is arranged on the cold water pipe, a hot water pipe is arranged at the lower part of the hot water storage tank, and a hot water valve is arranged on the hot water pipe.

5. A semiconductor refrigeration system based on solar energy, wind energy and electric energy according to claim 4, characterized in that: The cold water valve and the hot water valve both use solenoid valves, a first temperature sensor is arranged in the refrigerator inner tank, a PLC controller is installed on the refrigerator shell, a liquid level sensor and a second temperature sensor are arranged inside the hot water storage tank, and the cold water valve, the hot water valve, the liquid level sensor, the first temperature sensor, and the second temperature sensor are electrically connected to the PLC controller respectively.

6. A semiconductor refrigeration system based on solar energy, wind energy and electric energy according to claim 1, characterized in that: A water pump is arranged on the pipeline between the water outlet pipe of the heat exchange substrate and the water inlet of the hot water storage tank.

7. A semiconductor refrigeration system based on solar energy, wind energy and electric energy according to claim 2, characterized in that: The solar PVT collector also includes a heat conduction plate and a heat exchange tube. The heat conduction plate is arranged at the bottom of the PVT photovoltaic panel, the heat exchange tube is arranged at the bottom of the heat conduction plate, and a three-way solenoid valve is arranged on the pipeline between the water pump and the water inlet of the hot water storage tank. The water inlet of the three-way solenoid valve is connected to the water pump, one of the outlets of the three-way solenoid valve is connected to the heat exchange tube through the water inlet branch pipe, and the other outlet of the three-way solenoid valve is connected to the water inlet of the hot water storage tank. The heat exchange tube is also connected to the water inlet of the hot water storage tank through the water outlet branch pipe, and the three-way solenoid valve is electrically connected to the PLC controller.

8. A semiconductor refrigeration system based on solar energy, wind energy and electric energy according to claim 7, characterized in that: The heat exchange tube adopts a serpentine tube structure.

9. A semiconductor refrigeration system based on solar energy, wind energy and electric energy according to claim 1, characterized in that: The heat exchange substrate is made of copper.

10. A semiconductor refrigeration system based on solar energy, wind energy and electric energy according to claim 1, characterized in that: The branch flow channel adopts a straight flow channel, an S-shaped flow channel or a Tesla valve flow channel.

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