Annular convex lens and efficient light type solar water heater

Abstract

The invention provides an annular convex lens and an efficient light type solar water heater and belong to the solar water heaters. The annular convex lens is characterized in that an annular light-transmitting ring with a longitudinal focusing function is arranged on a glass evacuated tube in a sleeving manner, so that an evacuated tube collector only having a transverse focusing function also has the longitudinal focusing function, and the heat collecting efficiency is increased by multiple times; meanwhile, the light catching feature of the annular convex lens has high adaptability to the spatial movement of the solar light source; and in this way, the evacuated tube collector can be light and miniaturized, it can be achieved that the evacuated tube collector still keeps efficient lightcatching capacity, heat collecting capacity and heat supplying capacity when installed close to the facade of an outer wall, and therefore vast building residents can also use the solar water heater.Besides, the emission of carbon dioxide can be effectively reduced.

Description

[0001] 1. Technical field [0002] The invention belongs to the category of solar water heaters. [0003] 2. Background technology [0004] Glass vacuum tube solar water heaters are bulky and heavy. They can neither be placed indoors nor installed on exterior walls. They are only suitable for residents living in bungalows or the top floors of buildings. A series of problems such as too long pipes and limited roof area make it difficult to use; although there is also a solar water heater with a separate water tank and vacuum tube collector on the market, and the vacuum tube collector is hung on the wall, but due to the collection Due to the limitation of thermal efficiency, the effect of using solar energy for heating is not ideal. There is also a flat glass curtain-type heat collection structure, although it can also be installed on the outer wall, but because it does not have a focusing function, the effect of using solar energy for heating is also not good. With the acceler...

AI Technical Summary

Problems solved by technology

[0004] Glass vacuum tube solar water heaters are bulky and heavy. They can neither be placed indoors nor installed on exterior walls. They are only suitable for residents living in one-story houses or on the top floors of buildings. A series of problems such as too long pipes and limited roof area make it difficult to use; although there is also a solar water heater with a separate water tank and vacuum tube collector on the market, and the vacuum tube collector is hung on the wall, but due to Due to the limitation of thermal efficiency, the effect of using solar energy for heating is not ideal

There is also a flat glass curtain heat collection structure, although it can also be installed on the outer wall, but because it does not have a focusing function, the effect of using solar energy for heating is also not good

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