Photovoltaic phase change heat storage water tank

Abstract

The utility model relates to the technical field of hot water tanks, in particular to a photovoltaic phase change heat storage water tank which comprises a shell and an inner container, the inner container is fixedly connected in the shell, a baffle is fixedly connected in the inner container, and a phase change heat storage water tank is arranged in the space, located above the baffle, in the inner container. An electric heating water tank is arranged in the space, located below the baffle, in the inner container, the phase change water storage tank is filled with phase change heat storage balls, the upper end of the shell is fixedly connected with a ball discharging pipe opening used for adding the phase change heat storage balls into the inner container, two sets of electric appliance openings are formed in the side face of the shell, and a variable-frequency direct-current photovoltaic heating pipe and an alternating-current heating pipe are fixedly connected into the two sets of electric appliance openings respectively; direct current generated by the photovoltaic assembly directly drives the variable-frequency direct-current photovoltaic heating pipe to heat water in the electric heating water tank, the phase-change heat storage ball stores energy, heat energy is released when the temperature of hot water is insufficient, water in the inner container is heated, and the solar water heater can be stably used under various weather conditions and is good in heat energy storage effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to hot water tank field, concretely is a photovoltaic phase change heat storage water tank. BACKGROUND

[0002] With the development of society, the demand for energy in China is increasing day by day, and the proportion of energy consumption in residential life is also increasing. The comprehensive popularization of solar water heaters has alleviated the problem of high energy consumption of domestic hot water. Solar energy has the advantages of easy access, renewable, economic and environmental protection.

[0003] The existing hot water tank, such as the solar water heater proposed in patent application number "CN201220370519.5", through the structure of high-level water tank, heat collector, reflector, etc., the heat collector converts solar energy into heat energy, and heats the water in the high-level water tank. The back of the heat collector is provided with a reflector, and most of the sunlight passing through the heat collector is refracted to the back of the heat collector through the reflector, thereby significantly enhancing the heat collecting efficiency of the heat collector.

[0004] However, the existing hot water tank similar to the solar water heater cannot convert sufficient solar energy into heat energy when the sunlight is insufficient, resulting in that the water in the hot water tank cannot be heated. The existing technology such as thermal insulation layer has poor heat energy storage effect on the hot water tank, and the supply of hot water has great limitations and poor heat energy storage effect. Therefore, a photovoltaic phase change heat storage water tank is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a photovoltaic phase change heat storage water tank to solve the problems proposed in the above background technology.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A photovoltaic phase change heat storage water tank, comprising an outer shell and an inner container, the inner container is fixedly connected to the inside of the outer shell, a baffle is fixedly connected to the inside of the inner container, the space above the baffle in the inner container is set as a phase change heat storage water tank, and the space below the baffle in the inner container is set as an electric heating water tank. The phase change heat storage water tank is filled with phase change heat storage balls, a ball outlet is fixedly connected to the upper end of the outer shell for adding phase change heat storage balls to the inside of the inner container, two groups of electric appliance openings are formed in the side of the outer shell, a frequency conversion direct current photovoltaic heating pipe and an alternating current heating pipe are respectively fixedly connected in the two groups of electric appliance openings, the heating ends of the frequency conversion direct current photovoltaic heating pipe and the alternating current heating pipe are located in the electric heating water tank, and a water outlet for communicating with the inner container is fixedly connected to the bottom of the side wall of the outer shell.

[0008] Preferably, the space between the outer shell and the inner container is filled with a thermal insulation layer, a plurality of foot screws are fixedly connected to the bottom of the outer shell, the plurality of foot screws are arranged in a circumferential array, the frequency conversion direct current photovoltaic heating pipe is provided with three groups, and an electric appliance cover is clamped on each of the two groups of electric appliance openings.

[0009] Preferably, the shell side wall is fixed with two groups of temperature measuring ports, and two groups of thermometers are clamped inside the two groups of temperature measuring ports.

[0010] Preferably, the shell side wall is fixed with two groups of circulating ports, and the two groups of circulating ports are communicated with the inner container, and the two groups of circulating ports are located on both sides of the baffle.

[0011] Preferably, the shell upper end is fixed with a mounting port, the mounting port lower end is communicated with the inner container, and a magnesium rod is clamped and mounted inside the mounting port.

[0012] Preferably, the shell upper end and the shell side wall are fixed with TP valve ports, and the two groups of TP valve ports are communicated with the inner container.

[0013] The beneficial effects of the present application are as follows:

[0014] The present application can directly drive the frequency conversion direct current photovoltaic heating pipe built in the phase change heat storage water tank by the direct current generated by the photovoltaic module in the sunlight period, converts the photovoltaic electricity into heat energy to heat the water in the electric heating water tank, and stores energy by the phase change heat storage ball, can release heat energy by the phase change heat storage ball to heat the water in the inner container in the rainy day or night period, can also heat the water in the inner container by the alternating current heating pipe, can be stably used in various weather conditions, has good heat storage effect, can effectively reduce the water temperature reduction rate, can maintain high water temperature in the water tank for a long time, and can effectively improve the heat energy utilization rate. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without creative labor on the premise of not paying the creative labor;

[0016] Figure 1 It is the overall structure schematic diagram of the present application;

[0017] Figure 2 It is the internal structure schematic diagram of the electric appliance port of the present application;

[0018] Figure 3 It is the sectional structure schematic diagram of the hot water tank of the present application;

[0019] Figure 4 It is the upper end structure schematic diagram of the shell of the present application;

[0020] The reference signs in the drawings are as follows:

[0021] 1. Outer shell; 2. Inner tank; 3. Insulation layer; 4. Bulb tube port; 5. Mounting port; 6. Magnesium rod; 7. TP valve port; 8. Temperature measuring port; 9. Circulation port; 10. Thermometer; 11. Baffle; 12. Electrical cover; 13. Water outlet; 14. Foot; 15. Variable frequency DC photovoltaic heating tube; 16. AC heating tube; 17. Electrical outlet; 18. Electric heating water tank; 19. Phase change water storage tank. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] A photovoltaic phase change water storage tank, such as Figures 1-4 As shown, it includes an outer shell 1 and an inner liner 2. The inner liner 2 is made of stainless steel 304 and has a large inner cavity volume. The inner liner 2 is fixed to the inside of the outer shell 1. A baffle 11 is fixed to the inside of the inner liner 2. The baffle 11 is a circular thick plate with small holes on it. It has a large load-bearing capacity and can carry a large number of phase-change heat storage balls. The inner liner 2 is divided into two spaces. The space above the baffle 11 inside the inner liner 2 is set as a phase-change heat storage tank 19, and the space below the baffle 11 inside the inner liner 2 is set as an electric heating water tank 18. The phase-change heat storage tank is filled with phase-change heat storage balls. The baffle 11 To prevent the phase change heat storage ball from affecting the normal operation of the electric heating water tank 18, the phase change heat storage ball can be immersed in water through the small hole to improve the heat exchange and heat storage efficiency. The upper end of the outer shell 1 is fixed with a ball discharge pipe 4 for adding phase change heat storage balls to the inner tank 2. Two groups of electrical ports 17 are opened on the side of the outer shell 1. The two groups of electrical ports 17 are respectively fixed with variable frequency DC photovoltaic heating tubes 15 and AC heating tubes 16. The heating ends of the variable frequency DC photovoltaic heating tubes 15 and the AC heating tubes 16 are both located in the electric heating water tank 18. The bottom of the side wall of the outer shell 1 is fixed with a water port 13 for communicating with the inner tank 2.

[0024] Both the outer shell 1 and the inner tank 2 are in a sealed state and are used in conjunction with photovoltaic modules. They occupy a small area and can store about 300L of phase change heat storage balls inside, which increases the heat storage capacity and improves the current defects of hot water tanks such as being small and having low heat. It can improve the utilization rate of solar energy, reduce the floor space while increasing the heat storage density, and can be used stably in various weather conditions, which also saves users' electricity costs.

[0025] The phase change heat storage water tank 19 needs to use a matching phase change heat storage ball, and the ball outlet 4 is convenient for subsequent recovery and replacement of the phase change heat storage ball. The heat storage ball has the characteristics of high heat storage, high thermal conductivity, large heat conduction area and difficult leakage, and is filled with a phase change heat storage material with a phase change temperature of 50-80℃. The phase change heat storage material includes sodium acetate trihydrate, barium hydroxide octahydrate, fatty acid, paraffin and the like, but is not limited thereto. The phase change heat storage ball can absorb excessive heat of water to store heat, and when the water temperature is too low, the phase change heat storage ball can continuously release heat to effectively reduce the rate of water temperature drop, maintain a high water temperature in the water tank for a long time, and effectively improve the utilization rate of heat energy.

[0026] During the period with sunlight, the direct current generated by the photovoltaic module directly drives the frequency conversion direct current photovoltaic heating pipe 15 built in the phase change heat storage water tank 19 to convert photovoltaic electricity into heat energy to heat the water in the electric heating water tank 18, and the phase change heat storage ball stores energy. During the period of cloudy and rainy days or night, the heat energy can be released by the phase change heat storage ball to heat the water in the inner container 2, and the water in the inner container 2 can also be heated by the alternating current heating pipe 16. It can be stably used in various weather conditions, has good heat storage effect, can effectively reduce the rate of water temperature drop, can maintain a high water temperature in the water tank for a long time, and can effectively improve the utilization rate of heat energy.

[0027] By adopting the frequency conversion direct current photovoltaic heating pipe 15, three-gear frequency conversion heating can be automatically realized according to the light intensity, the efficient output of photovoltaic power generation is guaranteed, and when the photovoltaic module cannot provide large power in the case of weak light such as cloudy weather, sunrise and sunlight, the frequency conversion direct current photovoltaic heating pipe 15 can automatically reduce the heating power and provide heat energy for a longer time. The device not only saves energy and increases the utilization rate of solar energy, but also has good practicality.

[0028] As shown in Figure 3 , the space between the shell 1 and the inner container 2 is filled with a heat preservation layer 3, a plurality of groups of footings 14 are fixedly connected to the bottom of the shell 1, the plurality of groups of footings 14 are arranged in a circumferential array, the frequency conversion direct current photovoltaic heating pipe 15 is provided with three groups, and the two groups of electric appliance ports 17 are each clamped with an electric appliance cover 12.

[0029] The heat preservation layer 3 is made of polyurethane integral foam and wraps the inner container 2 to improve the heat preservation performance of the inner container 2. The footings 14 support the shell, one end of the frequency conversion direct current photovoltaic heating pipe 15 is connected with an external photovoltaic module, and the photovoltaic module drives the frequency conversion direct current photovoltaic heating pipe 15 to heat the water in the inner container 2.

[0030] As shown in Figures 2-3 , two groups of temperature measuring ports 8 are fixedly connected to the side wall of the shell 1, and thermometers 10 are clamped in the two groups of temperature measuring ports 8. The test ends of the two groups of thermometers 10 are respectively located above and below the phase change heat storage water tank 19.

[0031] The two groups of temperature measuring ports 8 are convenient for two groups of thermometers to measure temperature. The two groups of thermometers measure the temperature above and below the interior of the phase change water storage tank 19, which is convenient for detecting the water temperature above and below the phase change water storage tank.

[0032] like Figures 2-3 As shown, two groups of circulation ports 9 are fixedly connected to the side wall of the shell 1 , both groups of circulation ports 9 are communicated with the inner tank 2 , and the two groups of circulation ports 9 are respectively located on both sides of the baffle 11 .

[0033] The lower circulation port 9 is connected to the domestic water pipe, and the upper circulation port 9 is connected to the household water heater. Cold water enters the inner tank 2 through the lower circulation port 9, and the phase change heat storage material releases heat to heat the water. The hot water is stored in the household water heater through the upper circulation port 9 and can be circulated and heated to continuously supply free hot water.

[0034] like Figure 1 、 Figure 3 As shown, the upper end of the shell 1 is fixed with a mounting port 5 , the lower end of the mounting port 5 is communicated with the inner liner 2 , and a magnesium rod 6 is clamped and installed inside the mounting port 5 , and the magnesium rod 6 is located in the inner liner 2 .

[0035] The magnesium rod 6 reduces scale formation inside the inner liner 2 , reduces corrosion of the inner liner 2 , and protects the inner liner 2 .

[0036] like Figure 1 As shown, the upper end of the shell 1 and the side wall of the shell 1 are fixedly connected with TP valve ports 7, and the two groups of TP valve ports 7 are communicated with the inner container 2.

[0037] The phase-change heat storage tank 19 is equipped with a TP valve port 7, which is connected to an external TP valve, and can maintain the pressure and temperature inside the inner tank 2 stable, thereby improving the safety and stability of the device.

[0038] The working principle of the photovoltaic phase-change water storage tank 19 provided by the present invention is as follows:

[0039] During the sunny period, the direct current generated by the photovoltaic components directly drives the variable frequency direct current photovoltaic heating tube 15 built into the phase change water storage tank 19, converting the photovoltaic electricity into heat energy to heat the water in the electric heating water tank 18. At the same time, the phase change heat storage ball stores energy. On rainy days or at night, the phase change heat storage ball can release heat energy to heat the water in the inner tank 2. The water inside the inner tank 2 can also be heated by the AC heating tube 16. It can be used stably in various weather conditions, has a good heat storage effect, can effectively reduce the rate of water temperature drop, maintain a high water temperature in the water tank for a long time, and can effectively improve the utilization rate of thermal energy.

[0040] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A photovoltaic phase-change water storage tank (19), comprising an outer shell (1) and an inner tank (2), characterized in that: The inner liner (2) is fixed to the inside of the outer shell (1), a baffle (11) is fixed to the inside of the inner liner (2), a space above the baffle (11) inside the inner liner (2) is set as a phase-change heat storage tank (19), and a space below the baffle (11) inside the inner liner (2) is set as an electric heating water tank (18), the phase-change heat storage tank is filled with phase-change heat storage balls, the upper end of the outer shell (1) is fixed with a ball discharge pipe (4) for adding phase-change heat storage balls to the inner liner (2), two groups of electrical ports (17) are opened on the side of the outer shell (1), and the two groups of electrical ports (17) are respectively fixed with variable frequency DC photovoltaic heating tubes (15) and AC heating tubes (16), the heating ends of the variable frequency DC photovoltaic heating tubes (15) and the AC heating tubes (16) are both located in the electric heating water tank (18), and the bottom of the side wall of the outer shell (1) is fixed with a water port (13) for communicating with the inner liner (2).

2. A photovoltaic phase-change water storage tank (19) according to claim 1, characterized in that: The space between the outer shell (1) and the inner container (2) is filled with a heat-insulating layer (3); a plurality of ground pins (14) are fixedly connected to the bottom of the outer shell (1); the plurality of ground pins (14) are arranged in a circular array; three groups of variable frequency DC photovoltaic heating tubes (15) are provided; and an electrical appliance cover (12) is clamped on each of the two groups of electrical appliance ports (17).

3. A photovoltaic phase-change water storage tank (19) according to claim 1, characterized in that: Two groups of temperature measuring ports (8) are fixedly connected to the side wall of the housing (1), thermometers (10) are clamped inside the two groups of temperature measuring ports (8), and the test ends of the two groups of thermometers (10) are respectively located at the upper and lower parts inside the phase-change water storage tank (19).

4. A photovoltaic phase-change water storage tank (19) according to claim 1, characterized in that: Two groups of circulation ports (9) are fixedly connected to the side wall of the outer shell (1), both groups of circulation ports (9) are connected to the inner container (2), and the two groups of circulation ports (9) are respectively located on both sides of the baffle (11).

5. A photovoltaic phase-change water storage tank (19) according to claim 1, characterized in that: The upper end of the shell (1) is fixedly connected with a mounting opening (5), the lower end of the mounting opening (5) is communicated with the inner container (2), a magnesium rod (6) is clamped and mounted inside the mounting opening (5), and the magnesium rod (6) is located in the inner container (2).

6. A photovoltaic phase-change water storage tank (19) according to claim 1, characterized in that: The upper end of the shell (1) and the side wall of the shell (1) are both fixedly connected with TP valve ports (7), and both groups of TP valve ports (7) are in communication with the inner container (2).

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