Mechanical water heater cold water automatic return device

Abstract

The invention provides a mechanical water heater cold water automatic return device, which is characterized in that: it has a water pump, the water pump includes a body, the body is hollow, the left and right ends are water outlet and water inlet respectively, and the hollow part of the body is used as a fluid channel; The cross-sectional area of ​​the fluid channel gradually decreases along the two ends of the body to the middle; a through hole is opened on the body as a water outlet, which is located at the smallest cross-sectional area of ​​the fluid channel and communicates with the fluid channel; The pumping guide pipe of the branch of the hot water pipe is connected, and the water outlet is connected with the water heater tank through the cold water return pipe. The water inlet is connected to the outlet of the on-off regulating valve, the inlet of the on-off regulating valve is connected to one end of the branch pipe I, and the other end of the branch pipe I is connected to the cold water pipe of the water heater; the branch pipe II is connected to the shower switch and the cold water pipe of the water heater. The invention utilizes the principle of fluid mechanics and mechanical components to realize the automatic backflow of cold water in the water heater under the condition of no power consumption, the device is simple, and the investment is small.

Description

technical field [0001] The invention relates to a cold water return device for a water heater, in particular to a mechanical automatic cold water return device for a water heater. Background technique [0002] Water heaters are used in daily life, especially in households, barbershops, hotels, bathing centers and other occasions where shower devices are commonly used intermittently. A section of cold water in the middle of the road was released in vain, causing a lot of waste of water resources. At present, it is generally necessary to add a temperature detection device to the pipeline for water-saving devices for water heaters, use a solenoid valve for cold water recycling, or use an electric heating device to reheat the cold water, but the disadvantage of this method is that it needs to install a temperature sensor on the pipeline. For several electronic and electrical devices such as detection devices, the system is complex and requires a large initial investment, which ...

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Problems solved by technology

[0002] Water heaters are used in daily life, especially in households, barbershops, hotels, bathing centers and other occasions where shower devices are commonly used intermittently. A section of cold water in the road was released in vain, causing a lot of waste of water resources

At present, it is generally necessary to add a temperature detection device to the pipeline for water-saving devices for water heaters, use a solenoid valve for cold water recycling, or use an electric heating device to reheat the cold water, but the disadvantage of this method is that it needs to install a temperature sensor on the pipeline. Several electronic and electrical devices such as detection devices, the system is complex and the initial investment is large, and installation and use are inconvenient. While saving water, it also needs to consume electricity.

[0003] For example, Ma Zhiyan published "Design and Application of Cold Water Automatic Water-saving Device for Household Water Heater" in "Machinery and Electronics" in 2014, which introduced a cold water automatic circulation water-saving device used in household water heaters. The important technical solution is in the original water heater system. The method of adding electronic valves on the basis realizes the recycling of cold water in the pipeline, but the disadvantage of this method is that it needs to install a temperature detection device and an electromagnetic reversing valve on the pipeline, which requires a large investment, and the electronic equipment and components themselves need Power consumption saves water while increasing power consumption. At the same time, the system is more complicated to install and inconvenient to use, and there is a risk of leakage

[0004] The patent document "Solar water heater water-saving and energy-saving device based on pipeline frequency conversion heating technology (patent number: 201310230906)", its main technical solution is to use pipeline frequency conversion heating technology and electromagnetic valve to adjust and heat the cold water in the solar water heater water pipe, but The disadvantage of this method is that the system is complex, the power consumption increases, and there is a risk of leakage

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