Solar water heater

Abstract

The invention belongs to the field of photovoltaic technologies, and relates to a solar water heater. By adoption of the solar water heater, the technical problem that an existing solar water heater is low in heat collection efficiency and the like is solved. The solar water heater comprises a base body, a water tank and a plurality of vacuum tubes, wherein the water tank is fixed to the upper end of the base body, the upper ends of the vacuum tubes are inserted into the water tank, and the lower ends of the vacuum tubes are fixedly connected with the base body. The solar water heater further comprises transparent tubes which are arranged on the vacuum tubes in a sleeving mode. Reflecting films which can reflect sunlight onto the vacuum tubes are arranged on the transparent tubes. The ends of the transparent tubes are rotatably connected with the base body. A driving source which can drive the transparent tubes to rotate is further arranged on the base body. According to the solar water heater, the transparent tubes can be driven to rotate by rotating the driving source according to the irradiation direction of the sun, the light receiving faces of the vacuum tubes are made to face the irradiation direction of the sun all the time, and the shady faces of the vacuum tubes can absorb sunlight reflected by the reflecting films, so that heating is achieved, and accordingly the heat collection efficiency of the solar water heater is improved.

Description

technical field [0001] The invention belongs to the technical field of photovoltaics and relates to a solar water heater. Background technique [0002] A solar water heater is a heating device that converts sunlight energy into heat energy, and heats water from low temperature to high temperature, so as to meet the hot water use in people's life and production. As we all know, the efficiency of solar water heaters in collecting solar energy is not only related to the sunshine time and angle of sunshine in the area, but also related to whether the plane of the vacuum tube in the solar water heater is perpendicular to the direct sunlight. Maximum energy absorption. [0003] In order to improve the heat collection efficiency of solar water heaters, Chinese patent CN 202709501 U discloses an angle-adjustable solar water heater, including an insulated water tank, on which are evenly installed obliquely arranged vacuum tubes, and the ends of the vacuum tubes are fixed and install...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned solar water heater still has the following defects: the solar water heater can only adjust the angle of the vacuum tube relative to the horizontal plane, and when the sun moves to the other side, the heat collection efficiency of the water heater will be greatly reduced

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