CN212157699U

CN212157699U - Energy-saving solar water heater

Info

Publication number: CN212157699U
Application number: CN202020962608.3U
Authority: CN
Inventors: 刘�文; 王强; 宋帅迪; 林凡; 盛春华; 曹瑞
Original assignee: Nantong University
Current assignee: Nantong University
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-12-15
Anticipated expiration: 2030-05-29

Abstract

An energy efficient solar water heater comprising: the solar energy heat collecting pipe, the water tank, the hot water pipe and the heat preservation barrel, wherein the lower end of the hot water pipe is connected with the water inlet of the heat preservation barrel, and the water outlet pipe of the heat preservation barrel is provided with the booster pump; the upper end of the hot water pipe is provided with a two-position three-way electromagnetic valve which is provided with a water inlet communicated with the water outlet of the water tank, a water outlet communicated with the water inlet of the heat-preserving barrel and an air inlet communicated with the atmosphere. The utility model discloses add the heat-preserving container and be used for saving hot water, supply the user to use. The water in the hot water pipe is not available in a normal state, intermittent water injection of the water tank to the heat-preserving container is realized by switching the state of the two-position three-way electromagnetic valve at the upper end of the hot water pipe, after the water in the water tank is discharged, the upper end of the hot water pipe is communicated with the atmosphere, and hot water in the pipe flows into the heat-preserving container under the action of gravity, so that the hot water in the pipe is effectively utilized, and the waste of the hot water is. No water is in the hot water pipe in a normal state, so that the problems that the hot water is retained in the pipe for a long time to cause energy waste and the hot water pipe is easily frozen and cracked in winter are solved.

Description

Energy-saving solar water heater

Technical Field

The utility model relates to an energy-saving solar water heater belongs to energy saving and emission reduction technical application field.

Background

At present, a solar water heater is water heater equipment which is vigorously promoted and popularized in China. Compared with other water heaters, the solar water heater not only saves conventional energy, does not generate any pollutant or waste, can efficiently generate hot water, but also has the advantages of nearly zero operating cost, good economic benefit for long-term use and long service life, and practically responds to the call of China for building energy-saving and environment-friendly society. Solar water heaters have numerous advantages, but nevertheless have technical deficiencies that limit their development.

In order to make better use of energy, solar water heaters are typically located on the roof, and their hot water delivery pipes need to extend from the roof to the inside of the building. In the using process, a large amount of cold water stored in the pipeline can be directly discharged, so that the waste of water resources is caused; when hot water flows through a long pipeline, the heat loss is too large, so that the water temperature becomes low; after the use, the hot water retained in the pipeline cannot be utilized, and waste is generated again; and in winter, the pipelines exposed outdoors are easy to be frost-cracked.

Disclosure of Invention

The utility model aims to provide a: the defects of the prior art are overcome, and the energy-saving solar water heater is provided, so that the waste of cold water and hot water in a pipeline can not be caused.

In order to achieve the above object, the utility model provides an energy-saving solar water heater, include: solar energy collection pipe, water tank and the hot-water line that from top to bottom sets up, its characterized in that: the lower end of the hot water pipe is connected with a water inlet of the heat-preserving barrel, and a water outlet pipe of the heat-preserving barrel is provided with a booster pump; the upper end of the hot water pipe is provided with a two-position three-way electromagnetic valve which is provided with a water inlet communicated with the water outlet of the water tank, a water outlet communicated with the water inlet of the heat-preserving barrel and an air inlet communicated with the atmosphere.

The utility model discloses add the heat-preserving container and be used for saving hot water, supply the user to use. The hot-water pipe is anhydrous under the normal state, through the switching of two tee bend solenoid valve states on the hot-water pipe, realizes the water tank to the intermittent type nature water injection of heat-preserving container to after the water tank finishes discharging, hot-water pipe upper end communicates with each other with the atmosphere, intraductal hot water flows into the heat-preserving container under the action of gravity, has effectively utilized intraductal hot water, has avoided hot water waste. Because no water is in the hot water pipe in a normal state, the problems that the hot water is retained in the pipe for a long time to cause energy waste and the hot water pipe is easy to freeze and crack in winter are solved.

In addition, the lower end of the hot water pipe is provided with a cut-off electromagnetic valve for blocking hot air in the heat-preserving barrel from being discharged outwards through the hot water pipe.

Preferably, a heating pipe is arranged in the heat-preserving barrel. When the illumination condition is poor or the temperature of water in the heat-preserving barrel is too low, the water in the heat-preserving barrel is heated by the heating pipe, so that the applicability of the solar water heater in rainy days or winter is improved. When the illumination condition is not ideal, the water in the water tank of the water heater can reach a certain temperature (for example, 25 ℃), and the water in the part flows into the heat-preserving container for further heating, so that the use requirement of higher water temperature (for example, 40 ℃) can be met, the energy is effectively utilized, and the energy consumption is reduced.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic view of the energy-saving solar water heater of the present invention.

The numbers in the figures are as follows:

1-solar heat collecting pipe, 2-water tank, 3-hot water pipe, 4-heat preservation barrel, 5-two-position three-way electromagnetic valve, 6-water outlet pipe, 7-booster pump, 8-cut electromagnetic valve, and 9-support.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the energy-saving solar water heater of the present embodiment mainly includes: the solar energy heat collecting tube comprises a solar energy heat collecting tube 1 (adopting a vacuum heat collecting tube), a water tank 2, a hot water tube 3 arranged from top to bottom and a heat preservation barrel 4 positioned indoors. The solar heat collecting pipe 1 and the water tank 2 are fixed on the roof through a bracket 9. The lower end of the hot water pipe 3 is connected with the water inlet of the heat-preserving container 4, the water outlet pipe 6 of the heat-preserving container 4 is provided with a booster pump 7, and hot water supply is realized through the heat-preserving container 4.

As shown in fig. 1, a two-position three-way solenoid valve 5 is disposed at the upper end of the hot water pipe 3, and the two-position three-way solenoid valve 5 has a water inlet communicated with the water outlet of the water tank 2, a water outlet communicated with the water inlet of the heat-insulating barrel 4, and an air inlet communicated with the atmosphere.

The two-position three-way solenoid valve 5 has two state positions:

when the first state position is set, the water inlet of the two-position three-way electromagnetic valve 5 is communicated with the water outlet, and the air inlet is closed. At this time, the water barrel of the solar water heater begins to release heat water, and the heat water is conveyed into the heat preservation barrel 4 through the hot water pipe 3.

And when the second state is set, the water inlet of the two-position three-way electromagnetic valve 5 is closed, and the air inlet is communicated with the water outlet. At the moment, the water bucket of the solar water heater stops releasing heat water, the upper end of the hot water pipe 3 is communicated with the atmosphere, and the hot water in the pipe falls into the heat-preserving bucket 4 under the action of self weight.

In this embodiment, the lower end of the hot water pipe 3 is provided with a cut-off solenoid valve 8, and hot air in the blocking heat-preserving container is discharged outwards through the hot water pipe. The outside of the hot water pipe 3 is wrapped with a heat insulation layer, so that heat loss is further prevented.

In order to meet the requirement that the solar water heater can be normally used when the illumination condition is poor or the temperature of water in the heat-preserving barrel is too low, an electric heater can be arranged in the heat-preserving barrel, the water in the heat-preserving barrel is heated by the electric heater, the water temperature is improved, and the use requirement is met.

When the solar water heater is in a normal state, the water outlet of the water tank is in a closed state, and hot water is supplied through the heat-insulating barrel. When the water level in the heat-insulating barrel is reduced to a certain height, the two-position three-way electromagnetic valve is started to enable hot water in the water tank to fall into the heat-insulating barrel through the pipeline, after a set time (for example, 10 s), the two-position three-way electromagnetic valve is switched to an original state, the water outlet of the water tank is closed, the upper end of the hot water pipe is communicated with the atmosphere, and the residual hot water in the pipe completely flows into the heat-insulating barrel under the action of self weight. Therefore, the hot water is effectively utilized, and energy is not wasted. And starting the water discharging mode again when the water level in the heat-insulating barrel drops to a certain height, and repeating the steps, namely realizing effective utilization of hot water through intermittent water supplement.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. An energy efficient solar water heater comprising: solar energy collection pipe (1), water tank (2) and hot-water line (3) that from top to bottom set up, its characterized in that: the hot water pipe is characterized by also comprising a heat-insulating barrel (4), the lower end of the hot water pipe (3) is connected with a water inlet of the heat-insulating barrel (4), and a water outlet pipe (6) of the heat-insulating barrel (4) is provided with a booster pump (7); the upper end of the hot water pipe (3) is provided with a two-position three-way electromagnetic valve (5), the two-position three-way electromagnetic valve (5) is provided with a water inlet communicated with a water outlet of the water tank (2), a water outlet communicated with a water inlet of the heat-insulating barrel (4) and an air inlet communicated with the atmosphere.

2. The energy-saving solar water heater according to claim 1, characterized in that: the lower end of the hot water pipe (3) is provided with a cut-off electromagnetic valve (8).

3. The energy-saving solar water heater according to claim 1, characterized in that: the two-position three-way electromagnetic valve (5) has two state positions: when the water inlet of the two-position three-way electromagnetic valve (5) is in the first state position, the water inlet is communicated with the water outlet, and the air inlet is closed; and when the second state is in a position, the water inlet of the two-position three-way electromagnetic valve (5) is closed, and the air inlet is communicated with the water outlet.

4. The energy-saving solar water heater according to claim 1, characterized in that: the hot water pipe (3) is wrapped with a heat insulation layer.

5. The energy-saving solar water heater according to claim 1, characterized in that: the solar heat collecting pipe (1) is a vacuum heat collecting pipe.

6. The energy-saving solar water heater according to claim 1, characterized in that: the solar heat collecting pipe (1) and the water tank (2) are fixed on the roof through a bracket (9).

7. The energy-saving solar water heater according to claim 1, characterized in that: the heat-insulating barrel (4) is positioned indoors.

8. The energy-saving solar water heater according to claim 1, characterized in that: an electric heater is arranged in the heat-insulating barrel (4).