Solar water heater with nursing function

Abstract

The invention provides a solar water heater with nursing function, belonging to the field of heat exchange equipment, in particular to solar energy equipment, which comprises at least a support, a water tank, a plurality of heat-collecting tubes and a plurality of heat-collection plates. The solar water heater is characterized in that: the water tank and the heat-collection plates are fixed on the support; one end of the heat-collecting tube is opened, while the other is closed; the open end is inserted to the water tank from the bottom of the water tank, and the closed end is supported on a tail box on the bottom of the heat-collection plate; the solar water heater also comprises a nursing device which comprises a water tank of the nursing device and a plurality of water inlet and outlet pipes, the water tank of the nursing device is arranged in the bottom area in the solar water tank and is connected with the water inlet and outlet of the solar water heater; one end of the water inlet and outlet pipe is connected with the water tank of the nursing device, while the other end is inserted into the heat-collecting tube. The solar water heater with nursing function has the advantages of less liability to cause cracking of the heat-collecting tube and generate scale and precipitates in the heat-collecting tube, and ability to increase water capacity of the solar water heater.

Description

technical field [0001] The invention relates to the field of heat exchange devices, especially solar devices. Background technique [0002] The current solar water heater includes at least a bracket, a water tank, a heat collecting tube and a heat collecting plate. The water tank and the heat collecting plate are fixed on the bracket. on the back box on the bottom of the board. When in use, the hot and cold water in and out of the solar water heater is realized through the water inlet and outlet at the bottom of the water tank. The heat collecting tube collects solar energy to heat the water in the tube. Using the principle of rising hot water and falling cold water, the water in the heat collecting tube is connected with the water in the water tank. The water in the tank generates natural convection to achieve the purpose of heating the water in the tank. Existing solar water heaters have the following defects due to the limitations of structural characteristics and opera...

AI Technical Summary

Problems solved by technology

Existing solar water heaters have the following defects due to the limitations of structural characteristics and operating principles: 1. The tubes are easy to explode, because the heat collecting tubes undertake the functions of absorbing heat and heating, and in addition the natural convection of hot water rising and cold water falling, the opening at the upper end of the heat collecting tubes There is a large difference between the temperature and the temperature at the lower end. The highest temperature at the nozzle may be close to 200°C. At such a high temperature, if it suddenly contacts cold water, the heat collecting tube is prone to burst; 2. It is easy to scale and produce sediment. Since it is put into use, the heat collecting tube is always full of water, and the flow of water in the heat collecting tube is completely dependent on the convection of cold and hot water, and the water flow is extremely weak, so it is easy to scale and produce sediment in the heat collecting tube

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