Solar multi-stage phase change heat storage heating system

Abstract

The invention provides a solar multi-stage phase change heat storage heating system, and relates to the technical field of multi-stage phase change heat storage heating. The solar multi-stage phase change heat storage heating system comprises a solar mechanism, one end of the solar mechanism is connected with a first water conveying pipe, one end of the first water conveying pipe is fixedly connected with a heat storage mechanism, one end of the heat storage mechanism is fixedly connected with a second water conveying pipe, and one end of the second water conveying pipe is fixedly connected with a heating mechanism. One end of the heating mechanism is fixedly connected with a water return pipe, one end of the water return pipe is fixedly connected with a water inlet pipe, and one end of the water inlet pipe is fixedly connected with a water inlet valve. And heat storage material layers made of different phase change materials are adopted in the three heat storage boxes, so that multi-stage heat storage of solar energy can be achieved when the system is integrally used, the water body gradually absorbs heat in a multi-stage mode in the heat storage mechanism, the water body is heated, functions are achieved, the heat supply and heating effect of the system is improved when the system is used, and the practicability of the whole device is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-stage phase change heat storage heating, and particularly to a solar multi-stage phase change heat storage heating system. Background Art

[0002] A solar multi-stage phase change heat storage heating system is a system that efficiently utilizes solar energy for heating. It stores and releases thermal energy through multi-stage phase change materials to solve the intermittent problem of solar energy and improve the heating efficiency.

[0003] The existing patent (Publication No.: CN110578960A) discloses that "the present invention discloses a passive solar energy phase change heat storage heating system, including a heat source composed of a solar collector (1), a phase change energy storage device (3), a user terminal (4), and a water pump (5). The hot water generated by the heat source flows through the water pump (5) and is divided into two paths: one path enters the user terminal (4) for indoor heating, and the other path flows into the phase change energy storage device. The return water of the user terminal and the return water of the phase change energy storage device are mixed and then flow back to the solar collector (1); when the phase change energy storage device (3) releases heat, the hot water flows through the sixth valve (11), the third check valve (15), the water pump (5), and the seventh valve (12) to enter the user terminal (4) for heating, and the return water enters the phase change energy storage device (3) again through the second check valve (14) and the fourth valve (9) for heating. The overall structure of the present invention is simple, easy to install, has high system thermal efficiency, low operating costs, and can stably and continuously provide heating heat sources."

[0004] In the process of implementing this application, the inventor found that the existing technology has the following problems: when the existing system is in use, the phase change material is used to heat the water body with less received solar energy and lower temperature. However, the heat storage function of a single phase change material is limited. In actual use, the heating effect on the water body is usually poor, and the overall practicality is not good. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a solar multi-stage phase change heat storage heating system, which solves the problems that the heating effect of the existing heating system using phase change energy storage for heat supply is poor and the practicality is not strong.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: a solar multi-stage phase change heat storage heating system, including a solar energy mechanism, one end of the solar energy mechanism is connected to a first water pipe, one end of the first water pipe is fixedly connected to a heat storage mechanism, one end of the heat storage mechanism is fixedly connected to a second water pipe, and one end of the second water pipe is fixedly connected to a heating mechanism; One end of the heating mechanism is fixedly connected to a return water pipe, one end of the return water pipe is fixedly connected to a water inlet pipe, one end of the water inlet pipe is fixedly connected to a water inlet valve, and the other end of the water inlet pipe is fixedly connected to a solar energy mechanism.

[0007] Preferably, the solar energy mechanism includes a bracket, a water storage tank is fixedly arranged at the upper end of the bracket, and a plurality of heat collecting tubes are fixedly arranged at equal intervals on one side of the bottom surface of the water storage tank.

[0008] Preferably, the heat storage mechanism includes a first heat storage tank, a second heat storage tank and a third heat storage tank. Splicing plates are fixedly arranged on the upper surfaces of the second heat storage tank and the third heat storage tank. The first heat storage tank, the second heat storage tank and the third heat storage tank are fixedly connected through the splicing plates. A support plate is fixedly arranged on the bottom surface of the third heat storage tank, and a support frame is fixedly arranged on the bottom surface of the support plate. First temperature sensors are fixedly arranged on one side inside the first heat storage tank, the second heat storage tank and the third heat storage tank. A plurality of heat conducting fins are fixedly arranged at equal intervals inside the first heat storage tank, the second heat storage tank and the third heat storage tank.

[0009] Preferably, a second diversion pipe is fixedly arranged on one side of the first heat storage tank and the second heat storage tank, and a second solenoid valve is fixedly arranged at the middle position of the second diversion pipe. A first diversion pipe is fixedly arranged on one side of the second heat storage tank and the third heat storage tank, and a first solenoid valve is fixedly arranged at the middle position of the first diversion pipe. A third solenoid valve is fixedly arranged at the bottom end on one side of the third heat storage tank.

[0010] Preferably, the first heat storage tank includes a first protective shell, a first heat conducting shell is fixedly arranged inside the first protective shell, and a first heat storage material layer is fixedly arranged inside the first heat conducting shell.

[0011] Preferably, the second heat storage tank includes a second protective shell, a second heat conducting shell is fixedly arranged inside the second protective shell, and a second heat storage material layer is fixedly arranged inside the second heat conducting shell.

[0012] Preferably, the third heat storage tank includes a third protective shell, a third heat conducting shell is fixedly arranged inside the third protective shell, and a third heat storage material layer is fixedly arranged inside the third heat conducting shell.

[0013] Preferably, the heating mechanism includes a heating water tank, a return water pump is fixedly arranged on one side of the inner bottom surface of the heating water tank, the output end of the return water pump is fixedly connected to a first control valve, a circulation pump is fixedly arranged at the middle position of the inner bottom surface of the heating water tank, the output end of the circulation pump is fixedly connected to a water outlet pipe, a fourth control valve is fixedly arranged in the middle of the water outlet pipe, and a second temperature sensor is fixedly arranged on the inner surface of the heating water tank.

[0014] Preferably, a first control valve is fixedly arranged on one side surface of the heating water tank, a drain pipe is fixedly arranged on the other side surface of the heating water tank, a third control valve is fixedly arranged at the middle position of the drain pipe, a return pipe is fixedly arranged on one side of the bottom surface of the heating water tank, a second control valve is fixedly arranged at the middle position of the return pipe, a control panel is fixedly arranged at the middle position of the front surface of the heating water tank, and a mounting bracket is fixedly arranged at the middle position of the back surface of the heating water tank.

[0015] Preferably, the heating water tank includes a water tank outer shell, and a heat insulation layer is fixedly arranged on the inner surface of the water tank outer shell.

[0016] Working principle: When the device is in use, the user needs to first install the solar energy mechanism as a whole on the sunny side of the roof of the building where it is to be used, install the heat storage mechanism near the solar energy mechanism, and install the heating mechanism indoors where it is needed. After the installation is completed, connect the solar energy mechanism and the heat storage mechanism through the first water delivery pipe, connect the heat storage mechanism and the heating mechanism through the second water delivery pipe, and connect the heating mechanism and the solar energy mechanism through the return water pipe. After the connection is completed, connect the water outlet pipe and the return pipe of the heating mechanism to the water heating equipment. Add water to the storage water tank through the water inlet pipe and the water inlet valve, convert solar energy through the heat collecting pipe to heat the water body. After the heating is completed, the water body enters the heat storage mechanism. When the water temperature is relatively high, heat exchange can be carried out between the first heat storage material layer, the second heat storage material layer and the third heat storage material layer of the heat storage mechanism and the water body to realize heat storage. Then the water body enters the heating mechanism and functions through the circulation water pump. When the second temperature sensor detects that the water temperature is relatively low, the return water pump can be turned on to return the water to the solar energy mechanism for reheating. When the overall system is in an environment of rainy days or nights and the solar energy is insufficient, the water temperature will be detected after the water body enters the heat storage mechanism. The temperatures set by the three first temperature sensors gradually increase from top to bottom. When the water body enters the first heat storage tank and the first temperature sensor inside detects that the temperature is lower than the set value, the second electromagnetic valve will be closed, and heat will be released through the first heat storage material layer to heat the water body. When the temperature reaches the appropriate temperature, the second electromagnetic valve will be opened, and the water will enter the second heat storage tank. The temperature will be detected by the first temperature sensor in the second heat storage tank. If the temperature is lower than the set value, the first electromagnetic valve will be closed, and heat will be released through the second heat storage material layer to heat it to the appropriate temperature. Then the first electromagnetic valve is opened, and the water body enters the third heat storage tank. If the temperature is lower than the set value of the first temperature sensor in the third heat storage tank, the third electromagnetic valve is closed, and heat is released through the third heat storage material layer to heat it to the appropriate temperature. Then the water is discharged into the heating mechanism for use.

[0017] The present invention provides a solar multi-stage phase change heat storage heating system. It has the following beneficial effects: 1. The present invention provides a solar multi-stage phase change heat storage heating system. Compared with the existing solar multi-stage phase change heat storage heating system, this solar multi-stage phase change heat storage heating system combines a solar energy mechanism, a heat storage mechanism and a heating mechanism. The heat storage mechanism is provided with three heat storage tanks, and the heat storage material layers made of different phase change materials are used in the three heat storage tanks, which can realize the multi-stage heat storage of solar energy when the whole system is in use. At the same time, when the solar energy is insufficient, the opening and closing of the first solenoid valve, the second solenoid valve and the third solenoid valve can be controlled by the first temperature sensor, so that the water body gradually absorbs heat in multiple stages in the heat storage mechanism, heats the water body, realizes the function, improves the heating effect of the system during use, and ensures the practicability of the whole device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the first axonometric schematic diagram of the present invention; Figure 2 is the second axonometric schematic diagram of the present invention; Figure 3 is the axonometric schematic diagram of the solar energy mechanism of the present invention; Figure 4 is the axonometric schematic diagram of the heat storage mechanism of the present invention; Figure 5 is the sectional schematic diagram of the heat storage mechanism of the present invention; Figure 6 is the axonometric schematic diagram of the heating mechanism of the present invention; Figure 7 is the sectional schematic diagram of the heating mechanism of the present invention.

[0019] Among them, 1. solar energy mechanism; 2. heat storage mechanism; 3. heating mechanism; 4. water inlet valve; 5. water inlet pipe; 6. return pipe; 7. first water delivery pipe; 8. second water delivery pipe; 101. water storage tank; 102. support; 103. heat collecting pipe; 201. first heat storage tank; 202. splicing plate; 203. second heat storage tank; 204. first diversion pipe; 205. first electromagnetic valve; 206. third heat storage tank; 207. support plate; 208. support frame; 209. second diversion pipe; 210. second electromagnetic valve; 211. third electromagnetic valve; 212. first protective housing; 213. first heat conducting housing; 214. first heat storage material layer; 215. second protective housing; 216. second heat conducting housing; 217. second heat storage material layer; 218. third protective housing; 219. third heat conducting housing; 220. third heat storage material layer; 221. heat conducting fin; 222. first temperature sensor; 301. control panel; 302. first control valve; 303. return pipe; 304. second control valve; 305. mounting bracket; 306. heating water tank; 307. third control valve; 308. water tank housing; 309. heat insulation layer; 310. circulation water pump; 311. drain pipe; 312. water outlet pipe; 313. fourth control valve; 314. second temperature sensor; 315. return water pump. Specific implementation manner

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] As Figure 1-2 shown, the embodiment of the present invention provides a solar multi-stage phase change heat storage heating system, including a solar energy mechanism 1. One end of the solar energy mechanism 1 is connected to a first water delivery pipe 7. One end of the first water delivery pipe 7 is fixedly connected to a heat storage mechanism 2. One end of the heat storage mechanism 2 is fixedly connected to a second water delivery pipe 8. One end of the second water delivery pipe 8 is fixedly connected to a heating mechanism 3; One end of the heating mechanism 3 is fixedly connected to a return pipe 6. One end of the return pipe 6 is fixedly connected to a water inlet pipe 5. One end of the water inlet pipe 5 is fixedly connected to a water inlet valve 4. The other end of the water inlet pipe 5 is fixedly connected to the solar energy mechanism 1.

[0022] Specifically, by setting up the solar energy mechanism 1, it is beneficial to realize the function of converting solar energy into heat energy to heat the water body when the system is in use. By setting up the first water pipe 7 and the second water pipe 8, it is beneficial to realize the water body transmission function when the system is in use. By setting up the heat storage mechanism 2, it is convenient to realize the heat storage function of the system. By setting up the heating mechanism 3, it is convenient to realize the use function of the system as a heating system. By setting up the return water pipe 6, it is beneficial to realize the water body circulation in the system. By setting up the water inlet pipe 5 and the water inlet valve 4, it is convenient to realize the water inlet function when the system is in use.

[0023] As Figures 3-7 shown, the solar energy mechanism 1 includes a bracket 102. A water storage tank 101 is fixedly arranged at the upper end of the bracket 102. A plurality of heat collecting tubes 103 are fixedly arranged at equal intervals on one side of the bottom surface of the water storage tank 101.

[0024] Specifically, through the heat collecting tubes 103, the water body in the water storage tank 101 can be heated to realize the basic function of heating by using solar energy of the device.

[0025] The heat storage mechanism 2 includes a first heat storage tank 201, a second heat storage tank 203 and a third heat storage tank 206. Splicing plates 202 are fixedly arranged on the upper surfaces of the second heat storage tank 203 and the third heat storage tank 206. The first heat storage tank 201, the second heat storage tank 203 and the third heat storage tank 206 are fixedly connected through the splicing plates 202. A support plate 207 is fixedly arranged on the bottom surface of the third heat storage tank 206. A support frame 208 is fixedly arranged on the bottom surface of the support plate 207. First temperature sensors 222 are fixedly arranged on one side inside the first heat storage tank 201, the second heat storage tank 203 and the third heat storage tank 206. A plurality of heat conducting fins 221 are fixedly arranged at equal intervals inside the first heat storage tank 201, the second heat storage tank 203 and the third heat storage tank 206. A second diversion pipe 209 is fixedly arranged on one side of the first heat storage tank 201 and the second heat storage tank 203. A second electromagnetic valve 210 is fixedly arranged at the middle position of the second diversion pipe 209. A first diversion pipe 204 is fixedly arranged on one side of the second heat storage tank 203 and the third heat storage tank 206. A first electromagnetic valve 205 is fixedly arranged at the middle position of the first diversion pipe 204. A third electromagnetic valve 211 is fixedly arranged at the bottom end on one side of the third heat storage tank 206.

[0026] Specifically, by providing the first heat storage tank 201, the second heat storage tank 203, and the third heat storage tank 206, it is beneficial to achieve the multi-stage heat storage function during the use of the system. By providing the splicing plate 202, it is convenient to install and fix the first heat storage tank 201, the second heat storage tank 203, and the third heat storage tank 206. By providing the support plate 207 and the support frame 208, it is convenient for the user to place the entire device. By providing a plurality of first temperature sensors 222, it is convenient to achieve the function of collecting and obtaining the internal temperature of each part of the system. By providing the heat conduction fin plates 221, it is convenient to achieve the heat conduction function during the use of the device, accelerating the heat exchange inside the system. By providing the first solenoid valve 205, the second solenoid valve 210, and the third solenoid valve 211, it is convenient for the user to control the flow of the water body inside the device, ensuring that it can be fully heated.

[0027] The first heat storage tank 201 includes a first protective outer shell 212. Inside the first protective outer shell 212, a first heat conduction outer shell 213 is fixedly provided. Inside the first heat conduction outer shell 213, a first heat storage material layer 214 is fixedly provided. The second heat storage tank 203 includes a second protective outer shell 215. Inside the second protective outer shell 215, a second heat conduction outer shell 216 is fixedly provided. Inside the second heat conduction outer shell 216, a second heat storage material layer 217 is fixedly provided. The third heat storage tank 206 includes a third protective outer shell 218. Inside the third protective outer shell 218, a third heat conduction outer shell 219 is fixedly provided. Inside the third heat conduction outer shell 219, a third heat storage material layer 220 is fixedly provided.

[0028] Specifically, the first protective outer shell 212, the second protective outer shell 215, and the third protective outer shell 218 are made of stainless steel plates filled with polyurethane foam, which can improve the overall strength of the system structure while ensuring heat insulation. The first heat conduction outer shell 213, the second heat conduction outer shell 216, and the third heat conduction outer shell 219 are made of copper plates, which can ensure rapid heat transfer inside. The first heat storage material layer 214, the second heat storage material layer 217, and the third heat storage material layer 220 are made of sodium sulfate decahydrate, paraffin, and stearic acid respectively, which can achieve the multi-stage heat storage function during the use of the system.

[0029] The heating mechanism 3 includes a heating water tank 306. On one side of the inner bottom surface of the heating water tank 306, a return water pump 315 is fixedly arranged. The output end of the return water pump 315 is fixedly connected to a first control valve 302. At the middle position of the inner bottom surface of the heating water tank 306, a circulating water pump 310 is fixedly arranged. The output end of the circulating water pump 310 is fixedly provided with a water outlet pipe 312. In the middle of the water outlet pipe 312, a fourth control valve 313 is fixedly arranged. On the inner surface of the heating water tank 306, a second temperature sensor 314 is fixedly arranged. On one side surface of the heating water tank 306, a first control valve 302 is fixedly arranged. On the other side surface of the heating water tank 306, a drain pipe 311 is fixedly arranged. At the middle position of the drain pipe 311, a third control valve 307 is fixedly arranged. On one side of the bottom surface of the heating water tank 306, a return pipe 303 is fixedly arranged. In the middle of the return pipe 303, a second control valve 304 is fixedly arranged. At the middle position of the front surface of the heating water tank 306, a control panel 301 is fixedly arranged. At the middle position of the back surface of the heating water tank 306, a mounting bracket 305 is fixedly arranged. The heating water tank 306 includes a water tank outer shell 308, and a heat insulation layer 309 is fixedly arranged on the inner surface of the water tank outer shell 308.

[0030] Specifically, by providing the heating water tank 306, it is beneficial to store the heated water body. By providing the return water pump 315 and the circulating water pump 310, it is beneficial to realize the circulation of the water body inside the device during use. By providing the second temperature sensor 314, it is convenient for the user to determine the temperature inside the heating mechanism 3. By providing the first control valve 302, the second control valve 304, the third control valve 307 and the fourth control valve 313, it is convenient to control the flow of the water body during the use of the device. By providing the heat insulation layer 309, it is convenient to realize the function of keeping the water body warm during the use of the device and prevent the heat from dissipating quickly.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solar multi-stage phase change heat storage heating system, comprising a solar energy mechanism (1), characterized in that: One end of the solar energy mechanism (1) is connected to a first water delivery pipe (7), one end of the first water delivery pipe (7) is fixedly connected to a heat storage mechanism (2), one end of the heat storage mechanism (2) is fixedly connected to a second water delivery pipe (8), and one end of the second water delivery pipe (8) is fixedly connected to a heating mechanism (3). One end of the heating mechanism (3) is fixedly connected to a return water pipe (6), one end of the return water pipe (6) is fixedly connected to a water inlet pipe (5), one end of the water inlet pipe (5) is fixedly connected to a water inlet valve (4), and the other end of the water inlet pipe (5) is fixedly connected to the solar energy mechanism (1).

2. The solar multi-stage phase change heat storage heating system according to claim 1, characterized in that: The solar energy mechanism (1) includes a bracket (102), a water storage tank (101) is fixedly arranged at the upper end of the bracket (102), and a plurality of heat collecting tubes (103) are fixedly arranged at equal intervals on one side of the bottom surface of the water storage tank (101).

3. The solar multi-stage phase change heat storage heating system according to claim 1, wherein: The heat storage mechanism (2) includes a first heat storage tank (201), a second heat storage tank (203) and a third heat storage tank (206). Splicing plates (202) are fixedly arranged on the upper surfaces of the second heat storage tank (203) and the third heat storage tank (206). The first heat storage tank (201), the second heat storage tank (203) and the third heat storage tank (206) are fixedly connected through the splicing plates (202). A support plate (207) is fixedly arranged on the bottom surface of the third heat storage tank (206), and a support frame (208) is fixedly arranged on the bottom surface of the support plate (207). A first temperature sensor (222) is fixedly arranged on one side inside the first heat storage tank (201), the second heat storage tank (203) and the third heat storage tank (206). A plurality of heat conduction fin plates (221) are fixedly arranged at equal intervals inside the first heat storage tank (201), the second heat storage tank (203) and the third heat storage tank (206).

4. The solar multi-stage phase change heat storage heating system according to claim 3, characterized in that: A second diversion pipe (209) is fixedly arranged on one side of the first heat storage tank (201) and the second heat storage tank (203), a second solenoid valve (210) is fixedly arranged at the middle position of the second diversion pipe (209), a first diversion pipe (204) is fixedly arranged on one side of the second heat storage tank (203) and the third heat storage tank (206), a first solenoid valve (205) is fixedly arranged at the middle position of the first diversion pipe (204), and a third solenoid valve (211) is fixedly arranged at the bottom end on one side of the third heat storage tank (206).

5. A solar multi-stage phase change heat storage heating system according to claim 3, characterized in that: The first heat storage tank (201) includes a first protective shell (212), a first heat conduction shell (213) is fixedly arranged inside the first protective shell (212), and a first heat storage material layer (214) is fixedly arranged inside the first heat conduction shell (213).

6. The solar multi-stage phase change heat storage heating system according to claim 3, wherein: The second heat storage tank (203) includes a second protective shell (215), a second heat conduction shell (216) is fixedly arranged inside the second protective shell (215), and a second heat storage material layer (217) is fixedly arranged inside the second heat conduction shell (216).

7. A solar multi-stage phase change thermal storage heating system according to claim 3, characterized in that: The third heat storage tank (206) includes a third protective housing (218), a third heat conducting housing (219) is fixedly arranged inside the third protective housing (218), and a third heat storage material layer (220) is fixedly arranged inside the third heat conducting housing (219).

8. A solar multi-stage phase change heat storage heating system according to claim 1, characterized in that: The heating mechanism (3) includes a heating water tank (306). A return water pump (315) is fixedly arranged on one side of the inner bottom surface of the heating water tank (306). The output end of the return water pump (315) is fixedly connected to a first control valve (302). A circulating water pump (310) is fixedly arranged at the middle position of the inner bottom surface of the heating water tank (306). The output end of the circulating water pump (310) is fixedly provided with a water outlet pipe (312). A fourth control valve (313) is fixedly arranged in the middle of the water outlet pipe (312). A second temperature sensor (314) is fixedly arranged on the inner surface of the heating water tank (306).

9. A solar multi-stage phase change heat storage heating system according to claim 8, characterized in that: A first control valve (302) is fixedly arranged on one side surface of the heating water tank (306). A drain pipe (311) is fixedly arranged on the other side surface of the heating water tank (306). A third control valve (307) is fixedly arranged at the middle position of the drain pipe (311). A return pipe (303) is fixedly arranged on one side of the bottom surface of the heating water tank (306). A second control valve (304) is fixedly arranged in the middle of the return pipe (303). A control panel (301) is fixedly arranged at the middle position of the front surface of the heating water tank (306). A mounting bracket (305) is fixedly arranged at the middle position of the back surface of the heating water tank (306).

10. A solar multi-stage phase change heat storage heating system according to claim 8, characterized in that: The heating water tank (306) includes a water tank housing (308), and a heat insulation layer (309) is fixedly arranged on the inner surface of the water tank housing (308).

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