Heating system utilizing solar energy and electromagnetic heating

Abstract

The utility model belongs to the technical field of heating systems, and particularly relates to a heating system utilizing solar energy and electromagnetism for heating, which comprises a solar heat collector, a solar cell panel, a first electromagnetic heating device, a heat storage unit, an energy storage unit and a fan coil system. A water outlet of the solar heat collector is connected with a heat storage unit and a water inlet of a fan coil system through a first three-way valve, and a circulating water outlet of the fan coil system and a circulating water outlet of the heat storage unit are communicated with a water inlet of the solar heat collector. The first electromagnetic heating device is connected with the heat storage unit, and a heat exchange water outlet of the heat storage unit is communicated with a water inlet of the fan coil system. According to the heating system, solar energy is converted into heat energy and electric energy through the solar heat collector and the solar cell panel, the energy storage unit supplies power to the electromagnetic heating device, the temperature of circulating water can be adjusted through the electric energy when the heat energy is unstable, and the phenomenon that the indoor temperature is suddenly low and suddenly high due to the fact that the heat energy is unstable is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating systems, and in particular relates to a heating system utilizing solar energy and electromagnetic heating. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Solar collectors can absorb solar radiation energy, and this part of heat energy can be fully utilized. The current solar heating system simply uses the collector plate to absorb the energy of sunlight to heat water, and uses the circulation of hot water in the pipe to achieve the effect of raising the indoor temperature; however, in actual use, sunlight is severely affected by the weather, causing the indoor temperature to fluctuate.

[0004] Electromagnetic heating, also known as electromagnetic induction heating, uses the principle of electromagnetic induction to convert electrical energy into thermal energy. Compared with traditional resistance heating, electromagnetic heating has the advantage of high heat conversion efficiency. However, using only electromagnetic heating for energy supply also has the problems of high equipment energy consumption and high cost of use. Therefore, heating systems using a single heat source often have various problems in actual use. Utility Model Content

[0005] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a heating system utilizing solar energy and electromagnetic heating, which combines solar energy collection with electromagnetic heating, which can not only improve the heating effect, but also make full use of solar energy resources and save energy.

[0006] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions:

[0007] The first aspect of the utility model provides a heating system using solar energy and electromagnetic heating, comprising: a solar collector, a solar panel, a first electromagnetic heating device, a heat storage unit, an energy storage unit and a fan coil system;

[0008] The water outlet of the solar thermal collector is connected to the water inlet of the heat storage unit and the fan coil system respectively through a first three-way valve, and the circulating water outlets of the fan coil system and the heat storage unit are connected to the water inlet of the solar thermal collector respectively;

[0009] The first electromagnetic heating device is connected to a heat storage unit, and a hot water outlet of the heat storage unit is connected to a water inlet of a fan coil system;

[0010] The solar cell panel is respectively connected to the first electromagnetic heating device, the heat storage unit and the fan coil system through the energy storage unit.

[0011] Furthermore, circulating water pumps are respectively provided on the connecting pipes between the circulating water outlets of the fan coil system and the heat storage unit and the water inlet of the solar collector.

[0012] Furthermore, the heat storage unit includes a heat exchange water tank and a constant temperature water tank, and the heat exchange water tank and the constant temperature water tank are connected through a pipeline and a first solenoid valve;

[0013] A heat storage coil is provided in the heat exchange water tank, the upper end of the heat storage coil is connected to the water outlet of the solar collector, and the lower end of the heat storage coil is connected to the water inlet of the solar collector; the water outlet of the constant temperature water tank is connected to the water inlet of the fan coil system through a second solenoid valve and a pipeline;

[0014] The first electromagnetic heating device is arranged on the connecting pipe between the water exchange water tank and the constant temperature water tank.

[0015] Furthermore, the first electromagnetic heating device includes an electromagnetic heating coil, which is disposed around the connecting pipe and fits with the connecting pipe; the electromagnetic heating coil is connected to a power supply.

[0016] Furthermore, a heat-insulating shell is provided on the outside of the connecting pipe between the heat exchange water tank and the constant temperature water tank.

[0017] Furthermore, the connecting pipe between the water exchange tank and the constant temperature water tank is made of high temperature resistant metal material.

[0018] Further, the fan coil system includes a heat exchange fan, a circulating air heat exchange coil and an air duct connected in sequence;

[0019] The heat exchange fan and the circulating air heat exchange coil are both arranged in a casing, the casing is communicated with an air duct, and an air inlet and an air outlet are provided on the air duct.

[0020] Furthermore, fins for enhancing air disturbance are provided on the outer wall of the circulating air heat exchange coil.

[0021] Furthermore, it also includes a fresh air system, and the fresh air outlet of the fresh air system is connected to the air supply outlet duct of the fan coil system.

[0022] Furthermore, it also includes a second electromagnetic heating device, which is connected to the fresh air system and the energy storage unit respectively.

[0023] One or more of the above technical solutions have the following beneficial effects:

[0024] The heating system provided by the utility model adopts solar collectors and solar panels to convert solar energy into heat energy and electrical energy, and stores them in a heat storage unit and an energy storage unit respectively. The energy storage unit supplies power to the electromagnetic heating device, so that the temperature of circulating water can be adjusted by electrical energy when the thermal energy is unstable. Not only can the heating effect be improved, but also the solar energy resources can be fully utilized to avoid the phenomenon of fluctuating indoor temperatures due to unstable thermal energy.

[0025] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0027] Figure 1 This is a structural diagram of a heating system using solar energy and electromagnetic heating in Example 1.

[0028] Figure 2 This is a schematic diagram of the structure of the fins of Example 1.

[0029] In the figure, 1. solar collector, 2. solar panel, 3. water exchange tank, 4. constant temperature water tank, 5. fins. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Embodiment 1

[0032] like Figure 1 As shown, the utility model proposes a heating system using solar energy and electromagnetic heating, comprising: a solar collector 1, a solar panel 2, a first electromagnetic heating device, a heat storage unit, an energy storage unit and a fan coil system;

[0033] The water outlet of the solar thermal collector 1 is connected to the water inlet of the heat storage unit and the fan coil system through a water pump and a three-way valve, and the circulating water outlets of the fan coil system and the heat storage unit are connected to the water inlet of the solar thermal collector 1 respectively;

[0034] The first electromagnetic heating device is connected to the heat storage unit, and the hot water outlet of the heat storage unit is connected to the water inlet of the fan coil system; the solar panel 2 is respectively connected to the first electromagnetic heating device, the heat storage unit and the fan coil system through the energy storage unit.

[0035] The heating system provided by the utility model adopts solar collectors and solar panels to convert solar energy into heat energy and electrical energy, and store them in a heat storage unit and an energy storage unit respectively, thereby realizing the heat storage and energy storage functions of the heating system; and the energy storage unit supplies power to the electromagnetic heating device, thereby realizing that when the thermal energy is unstable, the temperature of the circulating water can be adjusted by electrical energy, thereby avoiding the phenomenon of fluctuating indoor temperatures due to unstable thermal energy, and ensuring the stable and continuous operation of the heating system; while improving the comfort of indoor heating, the system operation cost is reduced.

[0036] As a further technical solution, the energy storage unit includes a battery pack and an inverter. The battery pack converts electrical energy into electrical energy required by each device through multiple inverters, thereby fully utilizing solar energy resources.

[0037] There are multiple solar collectors and solar panels. Multiple solar collectors are connected in sequence, and heat is collected by the solar collectors to provide thermal energy for the heating system; multiple solar panels are connected in series and then connected to a battery pack. The solar panels convert solar energy into electrical energy and store it in the battery pack. The generated electrical energy is used to provide power for the entire system, realizing auxiliary heating at night or when the heating supply of the solar collector is unstable.

[0038] As a further technical solution, a circulating water pump and a valve are respectively provided on the connecting pipe between the circulating water outlet of the fan coil system and the heat storage unit and the water inlet of the solar collector; the water pump is provided to provide circulating power for the water, and the valve is provided to control the flow rate of the water.

[0039] As a further technical solution, the heat storage unit includes a heat exchange water tank 3 and a constant temperature water tank 4, and the heat exchange water tank and the constant temperature water tank are connected through a pipeline and a solenoid valve;

[0040] A heat storage coil is provided in the heat exchange water tank 3, the upper end of the heat storage coil is connected to the water outlet of the solar thermal collector 1, and the lower end of the heat storage coil is connected to the water inlet of the solar thermal collector 1; by providing the heat storage coil in the heat exchange water tank, the water stored in the heat exchange water tank is heat exchanged with the water heated by the solar thermal collector, so that the heat energy generated by the water is stored;

[0041] The first electromagnetic heating device is arranged on the connecting pipe between the heat exchange water tank 3 and the constant temperature water tank 4, and the water outlet of the constant temperature water tank 4 is connected to the water inlet of the fan coil system through a pipe provided with a solenoid valve and a water pump;

[0042] Temperature sensors are respectively provided in the solar collector, the heat exchange water tank 3 and the constant temperature water tank 4. The temperature sensors monitor the temperature of the solar collector outlet and the water tank, and feed back to the control system, so as to control the opening and closing of the electromagnetic heating device.

[0043] When the heat generated by the solar collector is not enough to maintain the normal operation of the fan coil system, the heat storage unit and the first electromagnetic heating device provide heat energy to ensure the stable operation of the fan coil system; the heat storage unit includes a heat exchange water tank and a constant temperature water tank, the heat exchange water tank is used for heat storage, the constant temperature water tank is used for temporarily storing water heated by the first electromagnetic heating device, and a valve and a water pump are provided on the outlet pipe of the constant temperature water tank. The injection flow of hot water into the fan coil system is controlled by controlling the opening and closing degree of the valve, and the water pump provides power for the hot water; the utility model realizes the heat storage, constant temperature and temperature regulation functions of the heating system by arranging the heat storage unit and the first electromagnetic heating device, thereby avoiding the phenomenon of alternating hot and cold in the heating system.

[0044] The connecting pipe between the water exchange tank 3 and the constant temperature water tank 4 is made of high temperature resistant metal material, and a heat preservation shell is provided on the outside of the connecting pipe to prevent heat loss and achieve better heating effect. The first electromagnetic heating device includes a tubular heating element, which is arranged around the connecting pipe and fits with the connecting pipe. The tubular heating element is connected to the power supply through an inverter.

[0045] Electromagnetic heating is an energy conversion process that converts electrical energy into thermal energy using the principle of electromagnetic induction. When a high-speed changing alternating current passes through a coil, the coil will generate a high-speed changing magnetic field. When the alternating magnetic lines of force in the magnetic field pass through a metal pipe, countless small eddy currents are generated in the pipe wall, causing the pipe wall itself to heat up and exchange heat with the water, thereby achieving the purpose of heating the water in the pipe.

[0046] As a further technical solution, the fan coil system includes a heat exchange fan, a circulating air heat exchange coil and an air duct connected in sequence; the heat exchange fan and the circulating air heat exchange coil are both arranged in a casing, the casing is connected to the air duct, and the air duct is provided with an air inlet and an air outlet.

[0047] The water inlet of the circulating air heat exchange coil is connected to the water outlet of the solar collector and the heat storage unit, and the water outlet of the circulating air heat exchange coil is connected to the water inlet of the solar collector. The fan is used to drive the indoor air circulation. When hot water flows through the circulating air heat exchange coil, heat is exchanged with the air outside the tube, so that the air is heated to adjust the indoor air temperature.

[0048] In addition, ribs 5 for enhancing air disturbance are provided on the outer wall of the circulating air heat exchange coil. The ribs 5 are stainless steel sheets and are inclined at a certain angle to the central axis of the circulating air heat exchange coil. The structure of the ribs 5 is double-open and is provided on the outer wall of the pipe and fixed by electric welding. Its function is to increase the air disturbance outside the pipe and improve the heat exchange efficiency.

[0049] like Figure 2As shown, two rows of fins are symmetrically arranged, and each row of fins includes multiple groups of fins arranged in an array with an eight-shaped structure. By arranging fins on the outer wall of the circulating air heat exchange coil, air disturbance is enhanced and the heat exchange effect is improved.

[0050] As a further technical solution, it also includes a fresh air system, the fresh air outlet of the fresh air system is connected to the air supply outlet of the fan coil system pipeline; the fresh air system includes a fresh air fan and a fresh air heat exchange coil, the fresh air fan is used to deliver external fresh air into the fresh air heat exchange coil, and the fresh air delivered by the fresh air system is heated by a second electromagnetic heating device arranged on the outer wall of the fresh air heat exchange coil. The heated fresh air is mixed with the circulating air in the pipeline and then delivered into the room to achieve heating.

[0051] The inner wall of the fresh air heat exchange coil is provided with fins for enhancing air disturbance. The arrangement of the fins is the same as the structure and function of the fins arranged on the outer wall of the circulating air heat exchange coil, and will not be repeated here.

[0052] The second electromagnetic heating device has the same structure as the first electromagnetic heating device, the difference being that they are set at different locations; the electromagnetic heating coil of the second electromagnetic heating device is arranged in a ring shape on the fresh air heat exchange coil in the fresh air system, and the second electromagnetic heating device is connected to the battery pack via an inverter.

[0053] The utility model connects the fresh air system and the fan coil system to the same air supply duct respectively, and together they pass fresh air into the room and adjust the indoor air temperature. Moreover, the fresh air system and the fan coil system can be controlled independently during use without mutual interference.

[0054] During the day, circulating water flows through the solar collector, which absorbs solar radiation. This heat is carried by the circulating water to the heat exchange coil in the fan coil system to heat the air. The solar panel can convert solar energy into electrical energy and generate direct current. Part of the direct current is stored in the battery bank to provide electricity at night, and the other part is converted into alternating current by the inverter to power the electromagnetic heater, fan and water pump.

[0055] The fresh air brings the heat energy generated by the second electromagnetic heater to the room to heat the room. That is, the fresh air sent in through the fresh air duct is heated by the second electromagnetic device on the fresh air heat exchange coil, mixed with the circulating air, and finally sent into the room.

[0056] The working principle of the utility model is:

[0057] During the day, the solar collector and the solar panel work together. The solar collector can absorb solar radiation energy. On the one hand, this part of heat energy is brought to the circulating air heat exchange coil of the fan system by the circulating water driven by the water pump to heat the circulating air. After the circulating water releases heat, it returns to the solar collector to absorb heat again. Another part of the heat energy is brought to the heat storage coil of the heat storage unit by the circulating water driven by the water pump to heat the stored water. The heated water is sent to the circulating air heat exchange coil of the fan system to heat the circulating air.

[0058] Solar panels can convert solar energy into electrical energy, but they produce direct current. Part of the direct current is used to charge the battery pack to provide electricity at night, and the other part is converted into alternating current by an inverter to power the electromagnetic heater, fan and water pump.

[0059] The heat energy generated by the second electromagnetic heater is brought to the room by the fresh air driven by the fresh air fan to heat the room. The fresh air sent in through the fresh air duct is heated by the second electromagnetic heater on the fresh air heat exchange coil, mixed with the circulating air and sent into the room to achieve heating of the room.

[0060] At night, the battery works, while the solar collector and solar panel do not work. The battery pack charged during the day supplies direct current to the inverter, which is converted into alternating current by the inverter to power the electromagnetic heater, fan and water pump. The heat energy generated by the first electromagnetic heater is used to heat the water flowing from the heat exchange water tank to the constant temperature water tank. The heated water is temporarily stored in the constant temperature water tank and sent to the heating system by controlling the valve opening to heat the circulating air; after the circulating air enters the room and releases heat, it can return to the circulating air heat exchange coil to absorb heat again. The fresh air sent in through the fresh air duct is heated by the second electromagnetic heating device, mixed with the circulating air, and sent into the room, so as to realize indoor ventilation while heating the room.

[0061] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A heating system using solar energy and electromagnetic heating, characterized in that: include: A solar thermal collector, a solar panel, a first electromagnetic heating device, a heat storage unit, an energy storage unit and a fan coil system; The water outlet of the solar thermal collector is connected to the water inlet of the heat storage unit and the fan coil system respectively through a first three-way valve, and the circulating water outlets of the fan coil system and the heat storage unit are connected to the water inlet of the solar thermal collector respectively; The first electromagnetic heating device is connected to a heat storage unit, and a hot water outlet of the heat storage unit is connected to a water inlet of a fan coil system; The solar cell panel is respectively connected to the first electromagnetic heating device, the heat storage unit and the fan coil system through the energy storage unit.

2. A heating system using solar energy and electromagnetic heating according to claim 1, characterized in that: Circulating water pumps are respectively arranged on the communicating pipes between the circulating water outlets of the fan coil system and the heat storage unit and the water inlet of the solar collector.

3. A heating system using solar energy and electromagnetic heating according to claim 1, characterized in that: The heat storage unit includes a heat exchange water tank and a constant temperature water tank, and the heat exchange water tank and the constant temperature water tank are connected through a pipeline and a first solenoid valve; A heat storage coil is provided in the heat exchange water tank, the upper end of the heat storage coil is connected to the water outlet of the solar collector, and the lower end of the heat storage coil is connected to the water inlet of the solar collector; the water outlet of the constant temperature water tank is connected to the water inlet of the fan coil system through a second solenoid valve and a pipeline; The first electromagnetic heating device is arranged on the connecting pipe between the water exchange water tank and the constant temperature water tank.

4. A heating system using solar energy and electromagnetic heating according to claim 3, characterized in that: The first electromagnetic heating device comprises an electromagnetic heating coil, which is disposed around the connecting pipe and fits the connecting pipe; the electromagnetic heating coil is connected to a power supply.

5. A heating system using solar energy and electromagnetic heating according to claim 3, characterized in that: A heat-insulating shell is arranged outside the communicating pipe between the water exchange tank and the constant temperature water tank.

6. A heating system using solar energy and electromagnetic heating according to claim 3, characterized in that: The connecting pipe between the water exchange tank and the constant temperature water tank is made of high temperature resistant metal material.

7. A heating system using solar energy and electromagnetic heating according to claim 1, characterized in that: The fan coil system comprises a heat exchange fan, a circulating air heat exchange coil and an air duct connected in sequence; The heat exchange fan and the circulating air heat exchange coil are both arranged in a casing, the casing is communicated with an air duct, and an air inlet and an air outlet are provided on the air duct.

8. A heating system using solar energy and electromagnetic heating according to claim 7, characterized in that: The outer wall of the circulating air heat exchange coil is provided with fins for enhancing air disturbance.

9. A heating system using solar energy and electromagnetic heating according to claim 1, characterized in that: It also includes a fresh air system, and the fresh air outlet of the fresh air system is connected to the air supply outlet duct of the fan coil system.

10. A heating system using solar energy and electromagnetic heating according to claim 9, characterized in that: It also includes a second electromagnetic heating device, which is connected to the fresh air system and the energy storage unit respectively.

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