An all-plastic pressurized double-circulation solar water tank

Abstract

The invention discloses a wholly-plastic pressure-bearing double-circulation solar water tank which comprises a water tank housing and an inner water tank arranged in the water tank housing. A heat preservation layer is arranged between the water tank housing and the inner water tank, and the inner water tank is further provided with a pressure relief port communicated with the outside. The wholly-plastic pressure-bearing double-circulation solar water tank is characterized inn that the inner water tank consists of an upper seal head, a lower seal head and a middle housing, a heat exchange pipe bundle is installed in the inner water tank through a positioning plate, the internal spaces of the upper seal head, the lower seal head and the heat exchange pipe bundle serves as pipe passes, and the portion between the heat exchange pipe bundle and the middle housing serves as a housing pass. The wholly-plastic pressure-bearing double-circulation solar water tank is mainly made of a high-polymer material or a modified high-polymer material or a reinforced high-polymer material, is high in strength, resistant to corrosion and capable of saving a large amount of metal materials, the manufacturing cost of a solar water heater system can be remarkably reduced, and the wholly-plastic pressure-bearing double-circulation solar water tank has the advantages of being long in service life, high in reliability, simple in production process and the like, can be industrially produced in a large-scale mode and has wide market prospect.

Description

technical field [0001] The invention relates to the field of solar water heaters, in particular to an all-plastic pressurized double-circulation solar water tank. Background technique [0002] At present, most of the solar water heaters sold in the domestic market are in-line non-pressurized single-cycle solar water heaters. This product has the advantages of low price and high water temperature of the new machine. Because it is a single cycle, the water in the water tank directly enters the solar vacuum tube for heating. It will cause a lot of fouling in the vacuum tube. In recent years, high-rise residential buildings have developed rapidly. Due to the limited roof area of ​​high-rise buildings and long waterways, the installation of solar water heaters has been greatly limited. Split, pressure-bearing, and double-circulation solar water heaters have obvious advantages over integrated solar water heaters. It is more suitable for high-rise buildings and has broad market pr...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of short service life, high price and low heat exchange efficiency of stainless steel inner tank and enamel inner tank, this invention provides a new type of all-plastic pressure-bearing double-circulation solar water tank to achieve corrosion resistance, no scale and high heat transfer efficiency Effect

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