Anti-scale water heater

Abstract

The invention relates to a water-scale-resistant water heater. The water-scale-resistant water heater comprises a water storage tank and double-layered heat collection pipes. A water discharge outlet is further formed in the water storage tank. The outer layer of each heat collection pipe is a transparent pipe and the inner layer of each heat collection pipe is a heat absorbing pipe. The space between each transparent pipe and the corresponding heat absorbing pipe is vacuumized. Each heat collection pipe comprises a closed annular pipe. Each annular pipe is laterally connected with a water inlet pipe and a water outlet pipe. The water inlet pipes communicate with a water pump. The water outlet pipes communicate with the water storage tank. Each annular pipe is filled with dust collection balls at equal intervals. Every two adjacent dust collection balls are connected through a flexible line, and the flexible lines have the same length. Blocking nets are further installed at a connection opening of each annular pipe and the corresponding water inlet pipe as well as at a connection opening of each annular pipe and the corresponding water outlet pipe. A cleaning opening is further formed in each annular pipe. The water-scale-resistant water heater is capable of effectively reducing the producing speed of water scale in the heat collection pipes and prolonging the cleaning period of the water heater, so that the water heater is more stable in operation and more efficient in heating.

Description

technical field [0001] The invention relates to a water heater, in particular to a water heater capable of preventing scale. Background technique [0002] A water heater is a tool that provides hot water for a limited range. After years of development, water heaters are divided into the following categories: storage electric water heaters, instant electric water heaters, instant electric water heaters, gas water heaters, solar electric water heaters and air Source water heaters; among them, solar water heaters are favored by the majority of users for their advantages of environmental protection, energy saving, and convenience; traditional solar water heaters guide cold water into heat collecting tubes, and the heat collecting tubes absorb light energy and heat the cold water. The hot water is sent back to the water storage tank; when the hardness of the cold water in the heat collecting tube is high, the calcium and magnesium and other substances in the cold water will harde...

AI Technical Summary

Problems solved by technology

[0002] A water heater is a tool that provides hot water for a limited range. After years of development, water heaters are divided into the following categories: storage electric water heaters, instant electric water heaters, instant electric water heaters, gas water heaters, solar electric water heaters and air Source water heaters; among them, solar water heaters are favored by the majority of users for their advantages of environmental protection, energy saving, and convenience; traditional solar water heaters guide cold water into heat collecting tubes, and the heat collecting tubes absorb light energy and heat the cold water. The hot water is sent back to the water storage tank; when the hardness of the cold water in the heat collecting tube is high, the calcium and magnesium and other substances in the cold water will harden on the inner wall of the heat collecting tube to form scale under heating conditions, so in long-term use, There will be a large amount of scale accumulated in the heat collecting tube; with the increase of scale, the heat transfer performance of the heat collecting tube will decrease, and the diameter of the heat collecting tube will become smaller, which will make the heating effect of the water heater and the water outlet speed drop rapidly, so descaling becomes the most important part of the water heater. One of the problems that need to be solved urgently; in the aspect of descaling of water heaters, drugs are mostly used for descaling. This method can only gradually dissolve the surface scale, and the descaling effect is slow and incomplete. harm

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