CN202675691U - Water-saving easily-cleaned efficient solar water heater - Google Patents

Abstract

A water-saving, easy-to-clean, high-efficiency solar water heater solves the problems of stagnant cold water in pipes connected between hot water output by ordinary solar water heaters and water intake by users and easy dirt formation in heat-absorbing pipes. It is characterized in that: between the hot water and the user's water intake, a return pipeline is added to form a water circulation system, and the booster pump (9) is used to recover the cold water retained in the pipeline to the heat-absorbing pipe (2) or the water tank (1) for recharging. use to save water. Since the water circulation system passes through the heat-absorbing pipe (2), it has a flushing effect on the inner wall of the heat-absorbing pipe, which can reduce the generation of dirt and achieve the effect of strengthening heat transfer.

Description

Water-saving and easy-to-clean high-efficiency solar water heater

1. Technical field

The utility model belongs to a solar water heater, in particular to a water-saving and easy-to-clean high-efficiency solar water heater which utilizes a booster pump and a circulating water channel to recycle cold water from a water delivery pipe and flush dirt in a heat-absorbing pipe. the

2. Background technology

Ordinary solar water heaters often have a long pipe connecting the hot water output by the water heater to the user's water intake (especially for high floors). into cold water. Because the pipeline is too long and the cost of heat preservation is high, many users let this part of water be lost in vain, which causes a huge waste of water resources. the

For how to effectively utilize the cold water remaining in these pipelines, there are existing practices in the field of water-saving technology such as the utility model "Solar Water Heater Water-Saving Tank", 200320019421.X, Dong Liang. Its main idea is to store this part of cold water in a spare water-saving tank and use it for cold water, or to reuse it after secondary heating by an electric heater. Another example is the utility model "A Solar Water Heater with Circulating Water-saving Device", 200710099409.3, Ren Yong. Its idea is to press this part of cold water to the additional water tank through the potential difference for recycling. But these two kinds of schemes all will add water tank, and use very inconvenient. the

3. Contents of the invention

The purpose of this utility model is to provide a water saving purpose by recovering the cold water retained in the pipeline between the water heater and the user's water intake; it also has the effects of being easy to clean, not easy to scale, and enhancing heat transfer. the

The technical scheme adopted by the utility model is: on the basis of the existing common solar water heater, add an upper water pipe, the upper end of which is connected with the bottom of each solar heat absorbing pipe, and after the lower end is equipped with an upper water valve, it is connected with the booster pump The outlet is connected to the water valve. The inlet of the booster pump is connected with the tap water inlet valve and the water discharge valve, the water discharge valve is connected with the lower end of the water pipe, and the upper end of the water pipe is connected with the bottom of the water tank. Add a branch pipe at the place where the upper water pipe is close to the heat-absorbing pipe, and install a purge valve on the branch pipe. the

The effect of using the new model is due to the formation of a water circulation pipeline system between the cold water and the hot water. Turn on the booster pump to send hot water from the heat-absorbing pipe to the water tank, cold water from the upper water pipe to the heat-absorbing pipe, cold water from the lower water pipe to the upper water pipe, and hot water from the water tank to the lower water pipe. When the water pipe is filled with hot water, turn off the booster pump and water valve. Generally, within ten seconds, hot water can be used. Properly control the running time of the booster pump so that the cold water is not allowed to flow out of the heat-absorbing pipe and enter the water tank to mix with the hot water, so the temperature of the hot water in the water tank will not drop. When the water temperature in the water tank is high, even if cold water flows out of the heat-absorbing pipe and enters the water tank to mix with hot water, reducing the temperature of the hot water in the water tank, there is no influence on the use of hot water. the

Since the water circulation pipeline between cold water and hot water passes through the heat-absorbing pipe, it has a flushing effect on the inner wall of the heat-absorbing pipe, which can reduce the generation of dirt; and without disassembly, the heat-absorbing pipe can be cleaned regularly with cleaning liquid to achieve enhanced heat transfer the goal of. the

Below in conjunction with accompanying drawing, the utility model is described in further detail. the

4. Description of drawings

Fig. 1 is the structural representation of the utility model

In the figure 1. water tank, 2. heat-absorbing pipe, 3. upper water pipe, 4. upper water valve, 5. lower water pipe, 6. lower water valve, 7. tap water inlet valve, 8. water valve, 9. booster pump , 10. Purge valve. the

5. Specific implementation

As shown in Figure 1, on the basis of existing ordinary solar water heaters, an additional upper water pipe 3 is added, the upper end of which is connected to the bottom of each solar heat absorbing pipe 2, and after the lower end is equipped with an upper water valve 4, it is connected with a booster pump 9 The outlet is connected with the water valve 8. The inlet of the booster pump 9 is connected with the tap water inlet valve 7 and the water valve 6, the water valve 6 is connected to the lower end of the water pipe 5, and the upper end of the water pipe 5 is connected to the bottom of the water tank 1. At the upper water pipe 3 close to the heat-absorbing pipe 2, set up a branch pipe, and a purge valve 10 is installed on the branch pipe. the

Since a water circulation pipeline is formed between the cold water and the hot water: the upper water pipe 3 → the heat-absorbing pipe 2 → the water tank 1 → the lower water pipe 5 → the upper water pipe 3 . Turn on the booster pump 9, so that the hot water from the heat-absorbing pipe 2 is sent to the water tank 1, the cold water from the upper water pipe 3 is sent to the heat-absorbing pipe 2, the cold water from the lower water pipe 5 is sent to the upper water pipe 3, and the hot water from the water tank 1 enters the lower water pipe 5. After the water pipe 5 is filled with hot water, the booster pump 9 and the water supply valve 4 are closed, and the water valve 8 can be opened. Generally, within ten seconds, the above-mentioned operation of taking hot water can be completed. When the water temperature in the water tank 1 is low enough to be used, the running time of the booster pump 9 should be properly controlled to prevent the cold water from the heat-absorbing pipe 2 from flowing out and mix with the hot water in the water tank 1 to keep the temperature of the hot water in the water tank 1 constant. Change, does not affect hot water access. When the water temperature of the water tank 1 is high (this is mostly the case), even if the cold water flows out of the heat-absorbing pipe 2 and mixes with the hot water of the water tank 1, the water temperature of the water tank 1 is lowered, but the water temperature of the water tank 1 is still higher than the required temperature of the water , has no effect on the use of hot water. the

Since the water circulation pipeline between cold water and hot water passes through the heat-absorbing pipe 2, it has a flushing effect on the inner wall of the heat-absorbing pipe 2, which can reduce the generation of dirt; The heat pipe 2 achieves the purpose of enhancing heat transfer. the

Claims (1)

1. water saving easy cleaning efficient solar water heater, it is by support, water tank (1) and endothermic tube (2) form, it is characterized in that: set up upper hose (3), the bottom connection of its upper end and every solar energy heat absorption pipe (2), after water supply valve (4) is loaded onto in the lower end, with the outlet of booster pump (9) be connected water valve (8) to be connected, the import of booster pump (9) is connected with lower water valve (6) with running water water intaking valve (7), lower water valve (6) connects downcomer (5) lower end, terminates at water tank (1) bottom on the downcomer (5).

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