Winter water pipe-antifreezing solar water heater

Abstract

The invention discloses a winter water pipe-antifreezing solar water heater. The winter water pipe-antifreezing solar water heater comprises a hot water storage tank and a solar heat collecting plate, and further comprises an antifreezing system, wherein a cold water inlet pipe and a hot water supply pipe are connected under the hot water storage tank; the antifreezing system comprises a hot pipe and a thermal insulation pipe; the hot pipe comprises a condensation section, a heat insulation section and an evaporation section; parts, exposed outdoors, of the cold water inlet pipe and the hot water supply pipe and the condensation section of the hot pipe are arranged in the thermal insulation pipe; and the evaporation section of the hot pipe is arranged indoors. Compared with the prior art, the winter water pipe-antifreezing solar water heater has the beneficial effects that the evaporation section of the hot pipe absorbs indoor heat and supplies heat to low-temperature inlet water of the cold water inlet pipe and cooled low-temperature water staying in a water pipe for a long time, water temperature in the cold water inlet pipe and the water pipe is increased, the water pipe is prevented from freezing, outlet water temperature of the hot water supply pipe can be moderately increased as well, cold water discharge is reduced, other energy does not need to be consumed, and double effects of low temperature freezing prevention and energy conservation are achieved.

Description

technical field [0001] The invention relates to the technical field of solar water heaters, in particular to an antifreeze system device for solar water heaters. Background technique [0002] Solar energy is installed on the roof or the roof, and is connected to the indoor water supply pipe through pipes. Since there is always water in the pipes, and the water will not heat up, it will be affected by the outdoor environment. In colder winters, the water in the outdoor water pipes is prone to freezing, causing the pipes to be frozen and cracked. At the same time, the temperature of the hot water discharged from the indoor water supply pipes at the beginning is relatively low, which is not suitable for household washing and needs to be discharged for a period of time. Hot water will come out after a certain time. For this kind of problem, the existing technology either uses heat tracing to heat the pipeline to prevent freezing, or uses an emptying valve or a hot water valve to...

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Problems solved by technology

In colder winters, the water in the outdoor water pipes is prone to freezing, causing the pipes to be frozen and cracked. At the same time, the temperature of the hot water discharged from the indoor water supply pipes at the beginning is relatively low, which is not suitable for household washing and needs to be discharged for a period of time. Hot water will come out after a certain time. For this kind of problem, the existing technology either uses heat tracing to heat the pipeline to prevent freezing, or uses an emptying valve or a hot water valve to drain and prevent the water in the pipeline from freezing. However, these methods require large energy consumption

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