Expansion condensation recovery device of solar heat collector

Abstract

An expansion condensation recovery device of a solar heat collector comprises a liquid storage structure communicated with a solar heat collection structure and an expansion condensation recovery structure communicated with the liquid storage structure. An expansion overflow pipe and a condensation return pipe are connected between the expansion condensation recovery structure and the liquid storage structure, the expansion overflow pipe conveys liquid in the liquid storage structure to the expansion condensation recovery structure, and the condensation return pipe conveys the liquid in the expansion condensation recovery structure to the liquid storage structure. By arranging the expansion condensation recovery structure, the problem of recovery and reuse of expanded hot water in the solar water heater is solved, and the heat energy use efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of solar water heater manufacturing, and in particular relates to an expansion condensation recovery device for a solar collector. Background Art

[0002] With the increasing awareness of environmental protection and the continuous development of renewable energy technology, solar water heaters, as a clean and environmentally friendly hot water supply equipment, have been widely used in households and industries. However, in actual use, solar water heaters face some technical challenges, one of which is the problem of hot water expansion.

[0003] In a solar water heater, when sunlight shines directly on the collector, the water in the collector will heat up rapidly. As the water temperature rises, the volume of the water will expand, causing the pressure inside the water heater to increase. If the water heater does not have a corresponding pressure release mechanism, hot water may overflow or even be discharged in the form of steam, which not only wastes water resources, but also poses a threat to the safe use of the water heater.

[0004] To solve this problem, existing solar water heaters are usually equipped with overflow valves or safety valves to release excess water or steam when the internal pressure is too high. However, this method is only a passive response mechanism, and the released hot water and steam are often not effectively utilized, resulting in energy waste.

[0005] On the one hand, this continuous discharge of water causes a waste of water resources. For the heating system in the north that uses solar energy as a heat source, it will also cause frequent water replenishment in summer. In particular, many single-family solar heating systems in rural areas in the north are located in remote areas without running water, and often require manual water replenishment, which has a great impact on the normal utilization rate and maintenance cost of the system.

[0006] On the other hand, there are still many places in remote rural areas of my country where tap water is not widely available. Too frequent use of groundwater to replenish solar energy will cause scaling in vacuum tubes and water tanks, which will affect the use effect and reduce the service life of solar energy. Utility Model Content

[0007] The utility model aims to provide a solar collector expansion condensation recovery device to solve the hot water expansion and water replenishment problems encountered during the use of solar water heaters and to improve the technical problem of the use efficiency of water heaters.

[0008] To achieve the above purpose, the specific technical solution of a solar collector expansion condensation recovery device of the utility model is as follows:

[0009] A solar collector expansion and condensation recovery device comprises a liquid storage structure connected to a solar collector structure, and an expansion and condensation recovery structure connected to the liquid storage structure;

[0010] An expansion overflow pipe and a condensation reflux pipe are connected between the expansion condensation recovery structure and the liquid storage structure. The expansion overflow pipe transports the liquid in the liquid storage structure to the expansion condensation recovery structure, and the condensation reflux pipe transports the liquid in the expansion condensation recovery structure to the liquid storage structure.

[0011] As a further improvement of the utility model, a pressure control valve is provided on the expansion overflow pipe, which automatically opens when the internal pressure of the liquid storage structure exceeds a preset value, allowing the liquid in the liquid storage structure to flow to the expansion condensation recovery structure.

[0012] As a further improvement of the present invention, a reflux pump is provided on the condensation reflux pipe, and the liquid cooled in the expansion condensation recovery structure is transported to the liquid storage structure through the reflux pump.

[0013] As a further improvement of the present invention, the condensation reflux pipe is provided with a one-way valve to prevent liquid from flowing from the liquid storage structure to the expansion condensation recovery structure through the condensation reflux pipe.

[0014] As a further improvement of the utility model, a condensation structure is provided in the expansion condensation recovery structure to liquefy the high-temperature gas.

[0015] As a further improvement of the present invention, the expansion condensation recovery structure is provided with an exhaust structure, which automatically opens when the internal pressure of the expansion condensation recovery structure exceeds a preset value.

[0016] As a further improvement of the utility model, the device of the utility model also includes a control system, which is connected to the pressure control valve, the exhaust structure, and the reflux pump to achieve automatic operation according to real-time monitoring data.

[0017] As a further improvement of the utility model, the expansion condensation recovery structure and the liquid storage structure are both made of high temperature resistant and corrosion resistant materials to ensure their long-term stable operation.

[0018] As a further improvement of the utility model, the expansion condensation recovery structure and the outer surface of the liquid storage structure are provided with a heat-insulating layer to reduce heat loss.

[0019] Beneficial effects:

[0020] By setting up an expansion condensation recovery junction and an expansion overflow pipe, when the water temperature inside the liquid storage structure rises and causes the volume to expand, excess water can automatically flow into the expansion condensation recovery junction, avoiding excessive pressure inside the liquid storage structure and possible hot water overflow or steam discharge. This not only ensures the safe and stable operation of the water heater, but also avoids the waste of water resources.

[0021] The condensation and reflux of hot water is achieved by setting up an expansion condensation recovery structure and a condensation reflux pipe. The cooled water in the expansion condensation recovery structure can automatically flow back to the liquid storage structure to achieve the recycling of water resources. This not only improves the efficiency of hot water use, but also reduces the user's water replenishment cost.

[0022] To sum up, the solar collector expansion condensation recovery device provided by the utility model has significant beneficial effects in solving the problem of hot water expansion, realizing hot water condensation reflux, improving hot water utilization efficiency and reducing user costs, and provides effective technical support for the energy saving, environmental protection and efficient operation of solar water heaters. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a solar collector expansion condensation recovery device of the utility model;

[0024] Explanation of the markings in the figure: 1. Liquid storage structure; 2. Expansion condensation recovery structure; 3. Expansion overflow pipe; 4. Condensation reflux pipe; 5. Exhaust structure; 6. Solar energy collection structure; 7. Insulation layer. DETAILED DESCRIPTION

[0025] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0026] Implementation example:

[0027] like Figure 1 As shown, a solar collector expansion condensation recovery device includes a liquid storage structure 1 and an expansion condensation recovery structure 2, which are made of high temperature resistant and corrosion resistant materials to ensure long-term stable operation. In this embodiment, the liquid storage structure 1 is a water tank connected to the solar heat collection structure 6, and the solar heat collection structure 6 converts solar energy into thermal energy and heats the water in the water tank. During the continuous heating process, the water temperature in the water tank rises and the volume expands, so that part of the hot water enters the expansion condensation recovery structure 2 and flows back after cooling down.

[0028] The expansion condensation recovery structure 2 is a sealed box, and a heat preservation layer 7 is provided on the surface of the box to prevent heat loss. An exhaust structure 5 is provided on the side, and the exhaust structure 5 is an exhaust valve, which can be opened according to the pressure inside the expansion condensation recovery structure 2 to exhaust air. A condensation structure is provided on the upper part, and the condensation structure is a heat exchange plate. After the water vapor contacts the heat exchange plate, it can quickly condense into liquid and fall back to the bottom of the box, so as to avoid being discharged by the exhaust structure after the pressure in the box is too high.

[0029] One end of the expansion overflow pipe 3 is connected to the water tank and the other end is connected to the expansion condensation recovery structure 2. A pressure control valve is provided on the pipeline. The pressure control valve can set the opening pressure. It monitors the pressure value inside the water tank in real time and opens after reaching the set pressure. Hot water enters the expansion condensation recovery structure through the expansion overflow pipe for storage, avoiding the loss of water and heat.

[0030] The inlet of the condensation reflux pipe 4 is connected to the expansion condensation recovery structure 2, and the outlet is connected to the water tank. When the expansion condensation recovery structure 2 is located above the liquid storage structure 1, the temperature in the water tank decreases, the pressure gradually decreases, and the water collected in the expansion condensation recovery structure 2 returns to the water tank along the condensation reflux pipe 4. The condensation reflux pipe 4 is provided with a one-way valve to prevent the water in the water tank from entering the expansion condensation recovery structure 2 through the condensation reflux pipe. A reflux pump is provided on the condensation reflux pipe 4. When the water in the expansion condensation recovery structure 2 accumulates to a certain extent, the reflux pump can be started to transport the water back to the water tank.

[0031] The device of the utility model is also provided with a control system, which realizes the automatic operation of the device by real-time monitoring of the internal pressure, liquid level and temperature of the liquid storage structure 1 and the expansion condensation recovery structure 2, and controlling the pressure control valve, exhaust structure, reflux pump and other equipment.

[0032] The device of the utility model realizes the storage of hot water after expansion and the return after cooling, which is of great significance for improving the use efficiency of solar water heaters and energy saving and emission reduction. The device of the utility model can effectively store excess water when hot water expands, and automatically return the stored water to the water heater after the water temperature drops, thereby realizing the recycling of water resources and energy saving.

[0033] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A solar collector expansion condensation recovery device, characterized in that: It includes a liquid storage structure connected to the solar heat collection structure, and an expansion condensation recovery structure connected to the liquid storage structure; An expansion overflow pipe and a condensation reflux pipe are connected between the expansion condensation recovery structure and the liquid storage structure. The expansion overflow pipe transports the liquid in the liquid storage structure to the expansion condensation recovery structure, and the condensation reflux pipe transports the liquid in the expansion condensation recovery structure to the liquid storage structure.

2. The solar collector expansion condensation recovery device according to claim 1, characterized in that: The expansion overflow pipe is provided with a pressure control valve, which automatically opens when the internal pressure of the liquid storage structure exceeds a preset value, allowing the liquid in the liquid storage structure to flow to the expansion condensation recovery structure.

3. The solar collector expansion condensation recovery device according to claim 2, characterized in that: The condensation reflux pipe is provided with a reflux pump, and the liquid cooled in the expansion condensation recovery structure is transported to the liquid storage structure through the reflux pump.

4. The solar collector expansion condensation recovery device according to claim 3, characterized in that: The condensation reflux pipe is provided with a one-way valve to prevent liquid from flowing from the liquid storage structure to the expansion condensation recovery structure through the condensation reflux pipe.

5. The solar collector expansion condensation recovery device according to claim 1, characterized in that: The expansion condensation recovery structure is provided with a condensation structure to liquefy the high-temperature gas.

6. The solar collector expansion condensation recovery device according to claim 3, characterized in that: The expansion condensation recovery structure is provided with an exhaust structure, which automatically opens when the internal pressure of the expansion condensation recovery structure exceeds a preset value.

7. The solar collector expansion condensation recovery device according to claim 6, characterized in that: It also includes a control system, which is connected to the pressure control valve, the exhaust structure, and the reflux pump to achieve automatic operation based on real-time monitoring data.

8. The solar collector expansion condensation recovery device according to claim 1, characterized in that: The expansion condensation recovery structure and the liquid storage structure are both made of high temperature resistant and corrosion resistant materials to ensure their long-term stable operation.

9. The solar collector expansion condensation recovery device according to claim 1, characterized in that: The expansion condensation recovery structure and the outer surface of the liquid storage structure are provided with a heat preservation layer to reduce heat loss.

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