Domestic solar water heater

Abstract

The invention discloses a domestic solar water heater including a cylinder-shaped bucket body, the bucket body is internally provided with a cylinder-shaped through hole, the through hole is internally and fixedly connected with a rotating shaft, and one end of the rotating shaft is connected with a motor; a layer of annular mounting plates are coated at the side face of the bucket body, a plurality of vacuum glass tubes which are provided with heat collection coating in a coating mode are evenly distributed on the mounting plates, and the vacuum glass tubes communicate with the bucket body through water hoses; two ends of the bucket body are separately provided with a water inlet pipe and a water outlet pipe which are both provided with sealed bearings, and external water pipes are rotatably connected with the sealed bearings; and two ends of the rotating shaft are installed on supports through bearings, and motors are installed on the supports. According to the domestic solar water heater, the adhesive attraction of limescale on glass tubes can be reduced from the source, the less limescale amount deposited on the inner walls of the glass tubes can be ensured, most of the limescale is discharged out of the glass tubes with hot water, and the service life of the glass tubes is easy to prolong.

Description

technical field [0001] The invention relates to a solar energy device, in particular to a household solar water heater. Background technique [0002] Existing household bathing equipment is generally divided into three types, namely gas water heaters, electric water heaters and solar water heaters. Gas water heaters and electric water heaters are more common in cities with limited space, while solar water heaters are more common in rural areas and some cities with sufficient roof space. It is more common, because solar water heaters use solar energy resources to heat hot water, which can not only save costs, but also benefit environmental protection, and are more and more popular among people. But a serious problem that existing solar water heater exists is exactly: because the heating element used is generally the vacuum glass tube that is coated with photosensitive material, and tap water can produce a large amount of scale in the long-term heating process, because existin...

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Problems solved by technology

But a serious problem that existing solar water heater exists is exactly: because the heating element used is generally the vacuum glass tube that is coated with photosensitive material, and tap water can produce a large amount of scale in the long-term heating process, because existing glass tube Most of them are used in a static state, so that scale is easy to deposit in the glass tube. Over time, these scales are difficult to remove from the glass tube, which will lead to a serious reduction in the heat absorption and heat transfer efficiency of the glass tube. Only the glass tube can be replaced. tube, the cost is high, the replacement is inconvenient, and it also affects the normal use of the water heater

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