Solar photovoltaic energy storage water boiler

Abstract

The utility model relates to a solar photovoltaic energy storage water boiler, which comprises a photovoltaic power generation component, a case and a water supply tank, an energy storage cylinder is arranged in the case, a heating coil is wound outside the energy storage cylinder, a heating coil is arranged in the energy storage cylinder, and energy storage media are filled between the energy storage cylinder and the heating coil. The two ends of the heating coil are connected with an upper water collector and a lower water collector respectively, a water inlet pipeline of the upper water collector is connected with the water supply tank, an electric control valve is arranged on the water inlet pipeline of the upper water collector, and a temperature control valve and a temperature sensor are arranged on a water outlet pipeline of the lower water collector. The energy storage cylinder is heated through eddy current generated by the heating coil, heat energy is stored in the energy storage medium, heat loss is greatly reduced, water in the water storage tank is distributed into the heating coil through the upper water collector, the water in the heating coil is heated through the heat stored by the energy storage medium, the water temperature is sensed by the temperature sensor, and the energy is stored in the energy storage medium. And the temperature control valve controls the water outlet amount to keep the water outlet temperature at 100 DEG C. The use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of water boilers, in particular to a solar photovoltaic energy storage water boiler. Background Art

[0002] Most water heaters currently on the market use metal heating rods to heat the water in the tank. This results in poor energy and heat storage, and rapid heat loss, requiring repeated heating of the water tank during use. Furthermore, these heaters are almost always electrically heated, which, due to the large number of units installed, can impact and burden the power grid.

[0003] At present, with the vigorous promotion of the country, photovoltaic power generation has already blossomed everywhere and has reached a near saturation state. Therefore, under this situation, it is urgent to seek a practical application market for photovoltaic power generation. It has become possible to develop a water boiler that uses solar photovoltaics for heating and solve the problems existing in the use of current water boilers. Utility Model Content

[0004] In response to the deficiencies in the prior art, the utility model provides a solar photovoltaic energy storage water boiler, which reduces the power consumption of the water boiler, saves user costs, and alleviates the pressure on the power grid. At the same time, it has good energy and heat storage effects and is more convenient to use.

[0005] The utility model is realized through the following technical scheme: a solar photovoltaic energy storage water boiler, comprising a chassis and a water supply tank, an energy storage cylinder is provided in the chassis, a heating coil is surrounded by the outside of the energy storage cylinder, a heating coil is provided inside the energy storage cylinder, and an energy storage medium is filled between the energy storage cylinder and the heating coil, an upper water collector and a lower water collector are respectively connected to both ends of the heating coil, the water inlet pipe of the upper water collector is connected to the water supply tank, and an electric control valve is provided on the water inlet pipe of the upper water collector, and a temperature control valve and a temperature sensor are provided on the water outlet pipe of the lower water collector.

[0006] This solution uses a heating coil to generate eddy current to heat the energy storage cylinder. The energy storage medium transfers and stores heat, greatly reducing heat loss. The water in the water storage tank is distributed to the heating coil through the upper water collector. The heat stored in the energy storage medium heats the water in the heating coil. The water supply and water cut-off are controlled by an electric control valve, the temperature sensor senses the water temperature, and the temperature control valve controls the water output, making it easy to use.

[0007] As an optimization, the energy storage medium is molten salt. This optimization solution uses molten salt, which has good heat transfer and heat storage effects, and can further improve the energy storage and heat storage effect.

[0008] As an optimization, the energy storage cylinder is provided with a heat-insulating layer on the outside, and the heating coil is located between the heat-insulating layer and the energy storage cylinder. This optimization solution further reduces heat loss through the heat-insulating layer, improves thermal insulation performance, and increases the heating efficiency of the heating coil.

[0009] As an optimization, the heat insulation layer is a vacuum glass insulation layer.

[0010] As an optimization, a controller is also included, and the heating coil, electric control valve, temperature control valve, and temperature sensor are all connected to the controller circuit. This optimization solution can realize automatic water storage heating through the controller.

[0011] As an optimization, a key switch for controlling the opening and closing of the electric control valve is provided on the chassis, and the key switch is connected to the controller circuit. This optimization solution makes it easier for personnel to control the water inlet.

[0012] As an optimization, a photovoltaic power generation component is also included, and the controller is connected to the transformer circuit of the photovoltaic power generation component. This optimization solution uses photovoltaic power generation to provide electricity, saving user costs and alleviating power grid pressure.

[0013] As an optimization, a boiled water storage tank is provided in the chassis, the water outlet pipe of the lower manifold is connected to the boiled water storage tank, and a drain valve is provided at the drain port of the boiled water storage tank. This optimization solution stores boiled water in the boiled water storage tank, which is more convenient to use.

[0014] As an optimization, the hot water tank is equipped with bottom and top level sensors, both of which are connected to the controller circuit. This optimization solution uses the bottom and top level sensors to sense the amount of hot water, which in turn provides feedback to the controller to open and close the temperature control valve, achieving automatic water discharge and shut-off.

[0015] The beneficial effects of this utility model are as follows: the device heats the energy storage cylinder through a heating coil, and the energy storage medium transfers and stores the heat. Combined with the thermal insulation layer, this significantly reduces heat loss, resulting in excellent energy and heat storage, reduced energy loss, and significantly fewer water heating cycles, ensuring water quality. Photovoltaic power generation is used to provide electricity, saving users costs and alleviating pressure on the power grid. A controller controls each component to achieve automatic water storage and heating, making the device more intelligent and convenient to use.

[0016] When the sun is shining, the energy storage medium continuously absorbs energy transmitted by the photovoltaic panels, becoming a constant-temperature molten state and storing heat to heat the water. Based on this state, the length and number of heating tubes in the energy storage medium can be calculated and designed according to the amount of hot water produced, so that the water temperature passing through the temperature sensor just reaches 100°C. However, when the sun is gone and no energy is stored, as the stored heat is released during heating, the energy storage medium gradually changes from liquid to solid, the temperature of the energy storage medium gradually drops, and the heating efficiency of the water slows down. The water passing through the temperature sensor will fall below 100°C. At this time, the temperature sensor can instruct the controller to control the opening degree of the temperature control valve, reducing the water flow rate to ensure that the water temperature passing through the temperature sensor can just reach 100°C. This design reduces the frequent use of the temperature control valve and extends its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of embodiment 1;

[0018] Figure 2 This is a structural diagram of embodiment 2;

[0019] As shown in the figure:

[0020] 1. Chassis, 2. Photovoltaic power generation components, 21. Photovoltaic power generation panels, 22. Transformer, 3. Energy storage cylinder, 4. Heating coil, 5. Heating coil, 6. Energy storage medium, 7. Upper water collector, 8. Thermal insulation layer, 9. Electric control valve, 10. Water supply tank, 11. Controller, 12. Lower water collector, 13. Temperature control valve, 14. Temperature sensor, 15. Boiling water storage tank, 16. Drain valve, 17. Top liquid level sensor, 18. Bottom liquid level sensor. DETAILED DESCRIPTION

[0021] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0022] Example 1:

[0023] like Figure 1 As shown, a solar photovoltaic energy storage water boiler includes a chassis 1 and a water supply tank 10. The chassis 1 houses an energy storage cylinder 3, which is surrounded by a heating coil 4. A thermal insulation layer 8 is provided on the outside of the energy storage cylinder 3, with the heating coil 4 positioned between the thermal insulation layer 8 and the energy storage cylinder 3. In this embodiment, the thermal insulation layer 8 is a vacuum glass insulation layer, which seals and insulates the energy storage cylinder, providing excellent thermal insulation performance.

[0024] A heating coil 5 is provided inside the energy storage cylinder 3 , and an energy storage medium 6 is filled between the energy storage cylinder 3 and the heating coil 5 . In this embodiment, the energy storage medium 6 is molten salt.

[0025] The two ends of the heating coil 5 are respectively connected to the upper water collector 7 and the lower water collector 12. The water inlet pipe of the upper water collector 7 is connected to the water supply tank 10, and the water inlet pipe of the upper water collector 7 is provided with an electric control valve 9. The water outlet pipe of the lower water collector 12 is provided with a temperature sensor 14 and a temperature control valve 13 in sequence along the output direction.

[0026] Specifically, both ends of the heating coil 5 extend to the outside of the energy storage cylinder 3, the upper water collector 7 is fixedly mounted on the outer wall of the energy storage cylinder 3, and the water inlet end of the heating coil 5 is connected to the water outlet pipe of the upper water collector 7. The water storage tank 10 is located outside the chassis 1, and the water inlet pipe of the upper water collector 7 extends to the outside of the chassis 1 and is connected to the water outlet of the water storage tank 10. The lower water collector 12 is fixedly mounted on the outer wall of the energy storage cylinder 3, and the water outlet end of the heating coil 5 is connected to the water inlet pipe of the lower water collector 12. In this embodiment, the water outlet pipe of the lower water collector 12 extends to the outside of the chassis 1 to facilitate personnel to collect water.

[0027] The system also includes a photovoltaic power generation assembly 2 and a controller 11. The heating coil 4, electrically controlled valve 9, temperature control valve 13, and temperature sensor 14 are all connected to the controller 11 circuit. The controller 11 is also connected to the transformer circuit of the photovoltaic power generation assembly 2. The photovoltaic power generation assembly provides power to the controller, heating coil, electrically controlled valve, temperature control valve, and temperature sensor, eliminating the need for external power and significantly reducing grid pressure. The chassis 1 of this embodiment is equipped with a push-button switch 19 that controls the opening and closing of the electrically controlled valve 9. This push-button switch 19 is connected to the controller 11 circuit, facilitating personnel control of water inflow.

[0028] Specifically, the controller 11 is fixed in the chassis 1, and the photovoltaic power generation component 2 includes a photovoltaic power generation panel 21 and a transformer 22 connected to the photovoltaic power generation panel 21 circuit. The controller 11 and the transformer 22 are circuit-connected. The photovoltaic power generation panel 21 converts solar energy into a DC voltage and transmits it to the transformer 22. The transformer 22 converts the DC voltage into an AC voltage and transmits it to the controller 11, thereby providing AC power to each device. This is an existing conventional solar power generation technology and will not be elaborated on here.

[0029] This embodiment can be used for instant hot water. During use, a user can control the opening and closing of the electrically controlled valve 9 using a key switch 19. Water from the water supply tank 10 is distributed to the heating coil 5 through the upper water collector 7. The photovoltaic power generation assembly 2 provides power to the heating coil 4 to heat the energy storage cylinder 3. Heat is then transferred through the energy storage medium 6 to heat the water in the heating coil 5. The water temperature is sensed by a temperature sensor 14. When the water temperature reaches 100°C, it is fed back to the controller 11, which then controls the opening degree of the temperature control valve 13 to release hot water.

[0030] Example 2:

[0031] like Figure 2As shown, this embodiment differs from the first embodiment in that a boiled water tank 15 is further provided within the chassis 1. This tank 15 is equipped with a bottom liquid level sensor 18 and a top liquid level sensor 17, both of which are electrically connected to the controller 11. In this embodiment, the outlet pipe of the lower manifold 12 is connected to the boiled water tank 15, and the drain port of the boiled water tank 15 is equipped with a drain valve 16. Specifically, the outlet pipe of the lower manifold is connected to the water inlet of the boiled water tank, and the drain port of the boiled water tank extends to the outside of the chassis.

[0032] This embodiment can be used for water storage hot water. During use, when the hot water level in the boiled water storage tank 15 is lower than the bottom liquid level sensor 18, the bottom liquid level sensor feeds back a signal to the controller 11, and the controller controls the electric valve 9 to open to supply water to the heating coil 5, which is heated by the heating coil 4 and heated by the energy storage medium 6. When the temperature sensor 14 senses the water temperature to 100°C, it feeds back to the controller 11, and the controller then controls the opening degree of the temperature control valve 13, and hot water enters the boiled water storage tank 15. When the hot water level is higher than the top liquid level sensor 17, the top liquid level sensor feeds back a signal to the controller 11, and the controller controls the electric valve 9 to close, thereby realizing automatic water inlet, heating and water storage, which is more intelligent.

[0033] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A solar photovoltaic energy storage water heater, comprising a housing (1) and a water supply tank (10), characterized in that: An energy storage cylinder (3) is provided in the chassis, a heating coil (4) surrounds the outside of the energy storage cylinder, a heating coil (5) is provided inside the energy storage cylinder, an energy storage medium (6) is filled between the energy storage cylinder (3) and the heating coil (5), and both ends of the heating coil (5) are respectively connected to an upper water collector (7) and a lower water collector (12), the water inlet pipe of the upper water collector (7) is connected to the water supply tank (10), and an electric control valve (9) is provided on the water inlet pipe of the upper water collector (7), and a temperature sensor (14) and a temperature control valve (13) are provided on the water outlet pipe of the lower water collector (12).

2. A solar photovoltaic energy storage water boiler according to claim 1, characterized in that: The energy storage medium (6) is molten salt.

3. A solar photovoltaic energy storage water boiler according to claim 1, characterized in that: A heat insulation layer (8) is provided on the outer side of the energy storage cylinder (3), and the heating coil (4) is located between the heat insulation layer (8) and the energy storage cylinder (3).

4. A solar photovoltaic energy storage water boiler according to claim 3, characterized in that: The heat-insulating layer (8) is a vacuum glass heat-insulating layer.

5. The solar photovoltaic energy storage water boiler according to claim 1, characterized in that: It also includes a controller (11), and the heating coil (4), the electric control valve (9), the temperature control valve (13), and the temperature sensor (14) are all connected to the controller (11) circuit.

6. A solar photovoltaic energy storage water boiler according to claim 5, characterized in that: The chassis (1) is provided with a key switch (19) for controlling the opening and closing of the electric control valve (9), and the key switch is connected to the controller (11) circuit.

7. The solar photovoltaic energy storage water boiler according to claim 5, characterized in that: It also includes a photovoltaic power generation component (2), and the controller (11) is connected to the phase changer (22) of the photovoltaic power generation component.

8. The solar photovoltaic energy storage water boiler according to claim 5, characterized in that: A boiled water storage tank (15) is provided in the chassis (1), a water outlet pipe of the lower water collector (12) is connected to the boiled water storage tank (15), and a drain valve (16) is provided at the drain port of the boiled water storage tank (15).

9. The solar photovoltaic energy storage water boiler according to claim 8, characterized in that: A bottom liquid level sensor (18) and a top liquid level sensor (17) are provided in the boiled water storage tank (15), and both the bottom liquid level sensor and the top liquid level sensor are connected to the controller (11) circuit.

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