Single-tube heat collection device

Abstract

A single-tube heat collection device is characterized in that the outer diameter of an inner glass tube is not less than 100 mm; the length of an outer glass tube is not less than 1,500 mm; a sealing plug is arranged at the open end of a heat collection tube; a water inlet tube is arranged at the bottom of the sealing plug; a water outlet tube is arranged at the upper part of the sealing plug; a safety valve and a temperature sensor are arranged on the sealing plug; the water inlet tube is connected with a water pump; the water outlet tube is connected with a split-type water tank; and the water pump and the temperature sensor are connected with a controller. The single-tube heat collection device is only provided with one heat collection tube and does not need to be connected with other heat collection tubes, so that the cost of connected parts is reduced, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to a solar water heater heat collection system, in particular to a solar water heater system using a single heat collection tube. Background technique [0002] Existing solar water heaters are mainly composed of a water tank and a group of vacuum heat collecting tubes; the vacuum heat collecting tubes of split solar water heaters are placed outdoors, while the water tank is located indoors, but a group of heat collecting tubes need to be sealed and connected, and the connected parts need to be sealed. Insulation and more holes are opened to connect multiple heat collecting tubes, which makes the cost of connecting the heat collecting tubes relatively high, while the existing vacuum heat collecting tubes are generally all-glass double-layer glass vacuum tubes, and their general structure includes outer glass tubes 1. Inner glass tube. There is a low pressure vacuum layer between the outer glass tube and the inner glass tube. The ou...

AI Technical Summary

Problems solved by technology

[0002] Existing solar water heaters are mainly composed of a water tank and a group of vacuum heat collecting tubes; the vacuum heat collecting tubes of split solar water heaters are placed outdoors, while the water tank is located indoors, but a group of heat collecting tubes need to be sealed and connected, and the connected parts need to be sealed. Insulation and more holes are opened to connect multiple heat collecting tubes, which makes the cost of connecting the heat collecting tubes relatively high, while the existing vacuum heat collecting tubes are generally all-glass double-layer glass vacuum tubes, and their general structure includes outer glass tubes 1. 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 is coated with a heat absorbing layer. One end of the outer glass tube and the inner glass tube are self-sealing to form free ends respectively. The outer glass tube The other end of the inner glass tube is fused with the other end to form an open end

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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