Composite parabolic light focusing type solar rice cooker

Abstract

The composite parabolic light focusing solar rice cooker includes pressure rice cooker and square heat collector array comprising composite parabolic light focusing units. The pressure rice cooker has housing, rice utensil frame, water tank, water pipeline and heat exchanger. The heat exchanger has its two ends extending beyond the housing and connected to the medium input pipe and output pipe of the square heat collector array to form the medium flow loop, in which there are medium storage and circulating pump. The present invention performs heat exchange between heat medium inside the loop and water around the heat exchanger to evaporate water and the heat medium may be scale-proof and cold-proof medium for convenient use. The composite parabolic light focusing units have antiageing light condensers and long period high heat collecting efficiency.

Description

technical field [0001] The invention relates to a rice steaming device using solar energy as a heat source. Background technique [0002] The solar rice steaming device uses solar radiation as an energy source to heat water to boiling to realize steaming rice or steamed buns. The solar rice steaming device must consist of two major parts, one is a heat collector and the other is a rice steamer. Chinese patent No. is that the utility model specification of 00241906.8 discloses a kind of solar hot water rice steamer, and this solar hot water rice steamer is made up of A and B water heaters, namely a heat collector, a rice steamer, and an incubator. The above-mentioned solar hot water rice steamer relies on the water in the pipeline of the water heater to directly receive the sun’s radiation and heat up to generate steam to process the rice, so the water in the pipeline is supplied by tap water, so there is a problem of scale deposits in the pipeline, and after the scale depos...

AI Technical Summary

Problems solved by technology

However, the anti-aging performance of the current concentrator is not ideal, and the reflective surface will be damaged after a period of use

The reflective surface of the light collector mentioned in the above-mentioned utility model embodiment adopts the reflective surface of glass fiber reinforced plastic film, and the reflectivity of this reflective surface mirror surface can reach more than 80% at the beginning, but generally after using 2 to 3 years, due to the film and the base The viscous layer between the materials gradually undergoes a chemical reaction with the aluminum film under the natural conditions of long-term exposure to the sun and wind and rain, and the expansion coefficient of the pasted film is different from that of the substrate, and air, water, and pollutants can be removed from the film. The edge penetrates the boundary layer, and the above factors will damage the reflective film, peel off or break the phenomenon, and the specular reflectance will decrease, which will affect the heat collection efficiency

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