Solar water heater with frozen-blocking prevention function

Abstract

The invention provides a solar water heater with a frozen-blocking prevention function. The solar water heater comprises a support. A cylindrical heat-preservation water tank with the axis in the horizontal direction is arranged on the upper portion of the support; a row of radial circular holes in the horizontal direction is evenly distributed in the lateral lower portion of the heat-preservationwater tank; a row of vacuum heat-collecting pipes are arranged on the support, wherein the upper ends of the vacuum heat-collecting pipes are inserted in the radial circular holes of the heat-preservation water tank in a sealed mode; an upper water nozzle and a lower water nozzle are arranged on the lower portion of the heat-preservation water tank and connected with an upper water pipe and a lower water pipe; upper-section water pipe bodies of the upper water pipe and the lower water pipe are wrapped with heat-preservation material layers; temperature sensors are arranged between the heat-preservation material layers and the water pipe walls and connected with a temperature controller provided with a mains supply output end and a switch output end; and a super-hydrophobic material layeris arranged on at least the inner side wall of a water flow channel in each of the upper water nozzle and the lower water nozzle. The solar water heater is stable in freeze-prevention performance, durable in frozen-blocking prevention effect, high in adaptability to the severe environment, simple in structure and low in cost.

Description

technical field [0001] The invention relates to the field of water heaters, in particular to a solar water heater with the function of preventing freezing and blocking. Background technique [0002] In winter, the average temperature in most parts of northern my country is below 0°C, especially in the northeast region, where the average temperature is as low as -25°C, and the wind is strong, so the freezing of water nozzles is the most frequent occurrence in the application of solar water heaters in northern regions. question. At present, vacuum tube solar water tanks in the domestic market are generally equipped with two metal faucets, the overflow port and the exhaust port, which are connected to the external environment due to functional requirements. There are two reasons for the freezing of the faucet: first, the water vapor in the water tank condenses when it is cold, drips and hangs on the inner wall of the faucet and accumulates gradually. Conductor, and there is no...

AI Technical Summary

Problems solved by technology

There are two reasons for the freezing of the faucet: first, the water vapor in the water tank condenses when it is cold, drips and hangs on the inner wall of the faucet and accumulates gradually. Conductor, and there is no fixed wind direction, no fixed frequency of cold wind blowing continuously, it is easy to form ice hanging on the pipe head of the water nozzle to block the water nozzle; , although the water injection is stopped, a thin water layer will form at the bottom of the overflow, which is very easy to form an ice layer in the low temperature and harsh environment, and the thickness of the ice layer will continue to thicken with the increase of the number of water injections, and finally completely block the overflow mouth

The most direct safety hazard brought about by the freezing of the faucet is that the pressure in the water tank is too high to burst the inner liner, which eventually leads to the paralysis of the overall function of the solar water heating system

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