Heat exchange type heat collection pipe

Abstract

The invention discloses a heat exchange type heat collection pipe. The outer diameter of an inner glass pipe of the heat exchange type heat collection pipe is not smaller than 100 mm, and the length of an outer glass pipe of the heat exchange type heat collection pipe is not smaller than 1,500 mm. A sealing plug is arranged at the open end of the heat collection pipe and provided with a safety valve communicating with the inner glass pipe. The two ends of a heat exchange pipe are located on the sealing plug. The heat collection pipe absorbs solar energy and meanwhile has the capacity of storing much hot water, cold water flows through the heat exchange pipe to absorb heat of the hot water and can directly communicate with tap water, and when a user uses the heat exchange type heat collection pipe for taking a shower, the hydraulic pressure ratio is high, and higher comfort is achieved.

Description

Technical field [0001] The invention relates to a heat-collecting tube of a solar water heater, in particular a heat-collecting tube with a larger size than the conventional one and having the dual functions of heat absorption and heat storage. Background technique [0002] The vacuum heat collection tube of the existing solar water heater is an all-glass double-layer glass vacuum tube. Its general structure includes an outer glass tube and an inner glass tube. There is a low-pressure vacuum layer between the outer glass tube and the inner glass tube. The outer surface of the inner glass tube Coated with a heat absorption layer, one end of the outer glass tube and the inner glass tube are self-sealed to form a free end, and the other end of the outer glass tube and the other end of the inner glass tube are fused to form an open end. The diameter of the outer tube of the existing vacuum heat collection tube is generally 47mm, 58mm or 70mm; the vacuum heat collection tube with an o...

AI Technical Summary

Problems solved by technology

The diameter of the outer tube of the existing vacuum heat collecting tube is generally 47mm, 58mm or 70mm; the vacuum heat collecting tube with an outer diameter of 70mm and a length of 2m is the largest conventional vacuum heat collecting tube. The main function of the existing vacuum heat collecting tube is Absorb solar energy, and then store the heat in the water tank through thermal convection. The water tank is responsible for storing hot water. Limited by the size of the existing vacuum heat collecting tube, the vacuum heat collecting tube can only store less hot water, relying on the existing size The heat storage of the vacuum heat collecting tube is not realistic

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