Water supply device with function of circularly using cold and hot water and control method thereof

Abstract

The invention discloses a water supply device with the function of circularly using cold and hot water and a control method thereof. The device comprises a water supply pipeline and water supply terminals. The water supply pipeline comprises a cold water main flow pipeline, a cold water pressurizing flow pipeline, a hot water outlet flow pipeline and a backflow branch pipeline, wherein a check valve is arranged on the cold water main flow pipeline; the cold water pressurizing flow pipeline is provided with a water pump, a pressurizing outflowing three-way valve, a pressurizing converging three-way valve and a cold water pressurizing normally open solenoid valve; the hot water outlet flow pipeline is provided with a heating device, hot water supply branching three-way valves and hot water supply normally closed solenoid valves; the backflow branch pipeline is provided with a backflow normally open solenoid valve and a backflow converging three-way valve. According to the control method, remaining cold water in the hot water outlet flow pipeline is circularly heated and used before hot water is output, and when a hot water switch is switched off, remaining hot water in the hot water outlet flow pipeline and the cold and hot water are drained off for pressurizing. The water supply device has the advantages that water and energy are saved, hot water temperature is stable and reliable, water using experience is good, the water pressure adaptive range is wide, the water supply device can be used for flushing operation, and the flushing operation is easy and convenient and is not limited by terrain.

Description

technical field [0001] The invention relates to cold and hot water supply technology, in particular to a water supply device with the function of recycling hot and cold water and a control method thereof. Background technique [0002] Hot and cold water supply devices are common water supply equipment in industry, hotels and households. However, the cold and hot water supply devices of the prior art generally have the following problems: 1) There is a certain length of pipeline between the heating device and the faucet. Every time when the user turns on the tap to use hot water, there is often a certain amount of residual cold water in the pipeline between the heating device and the tap. Therefore, it is necessary to drain this part of the remaining cold water first, and then the hot water can be discharged normally, so there is a serious waste of water resources caused by "cold water flowing out in vain" for many years. And in order to check when the cold water is drained...

AI Technical Summary

Problems solved by technology

However, the following problems generally exist in the hot and cold water supply devices of the prior art: 1) due to the fact that there is a certain length of pipeline between the heating device and the faucet

This part of the remaining hot water cannot be discharged and utilized in time, resulting in the phenomenon of "hot water cannot be drained" and energy waste in the form of natural gas, gas and electricity.

3) At present, the start-up of general heating devices often depends on a certain water pressure, but in some specific areas or high-rise buildings, there is often insufficient water pressure, resulting in the failure of normal use of the heating device

4) The ground and facilities of industries, hotels and households often need to be washed, and the washing operation requires a certain water pressure, and an additional pressurizing device is often required to pressurize the water, resulting in cumbersome washing operations and being pressurized The volume of the installation and the constraints of the terrain

Images