Automatic cleaning system of solar energy collector

Abstract

The invention relates to an automatic cleaning system of a solar energy collector. The automatic cleaning system not only comprises a spray thrower (8) positioned at the upper end of the solar energy collector (12), a water tank (1) connected with the spray thrower, and a solar energy collector which is slantwise or vertically arranged, but also comprises washing liquid (17), a feed pipeline (5) of the washing liquid, and a controller (14), wherein the spray thrower is a rectangular pipe and is provided with rows of spray holes (13); a diverging-reflecting type spray guide plate (11) is arranged in front of the spray holes; and the washing liquid is fed into the spray thrower through the feed pipeline, divergently sprayed to the diverging-reflecting type spray guide plate through the spray holes (13), and finally reflectively sprayed to the upper end of a glass cover plate of the solar energy collector. The automatic cleaning system of solar energy collector can perform full-covering automatic spraying on the surface of the solar energy collector, effectively removes organic foreign matters such as bird droppings, oily substances and the like, and also has the advantages of portability, low design cost, wide range of adjustable pressure of spraying the washing liquid, good effect and the like.

Description

technical field [0001] The invention relates to a cleaning system for a solar energy collector, in particular to an automatic cleaning system for a solar energy collector, belonging to the field of solar energy utilization. Background technique [0002] Solar concentrators are the main components in solar thermal and photovoltaic conversions, which absorb the light energy of sunlight shining on it and convert it into thermal energy or electrical energy output. [0003] Large-scale solar concentrators are installed outdoors, and the surface is easily covered with dust, bird droppings, greasy and other foreign matter. If not removed in time, it will seriously weaken the lighting ability and reduce the light collection transmittance. It should be cleaned automatically on a regular basis. [0004] The prior art is limited to direct spray cleaning on the surface of the glass plate of the one-piece household flat solar water heater with a pressurized hot water tank. The overflow ...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is only suitable for one-piece household flat solar water heaters with pressure-bearing hot water tanks, and when the height of the solar energy collector is set high, the pressure of spray cleaning will be insufficient, and the surface of the glass plate is made of When the water spray hole is directly sprayed and cleaned, the pressure water column expands less and the scouring force is difficult to control, especially it is not suitable for cleaning and tilting or vertically installed solar energy collectors. It is difficult to completely cover the surface of the upper glass plate, and the cleaning is difficult to meet the requirements. And only using solar hot water for cleaning, it is difficult to effectively remove organic foreign matter such as dry bird droppings and greasy, which not only wastes a lot of hot water but also reduces the output of solar water heaters

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