Water return valve and water supply system

Abstract

The invention discloses a water return valve and a water supply system. The water return valve comprises a valve body and a circulating valve; wherein the valve body is provided with a hot runner, a cold runner and a circulating runner; a circulating inlet is formed between the water inlet end and the water outlet end of the hot runner; a circulating outlet is formed between the water inlet end and the water outlet end of the cold runner; the circulating inlet is communicated with the circulating outlet through the circulating flow channel; the circulating valve is arranged in the circulating runner, and the circulating valve is provided with an initial position for closing the circulating inlet and a circulating position for opening the circulating inlet under the action of fluid pressure in the hot runner. The water return valve can have the water return function, cold water remaining on the tail end pipeline of the water supply system flows back to the water heater through the water return valve to be preheated and then supplied to a user, and cold water output at the initial stage of starting of the water supply system is reduced.

Description

[0001] priority information [0002] This application requires "applied on April 30, 2021, with application number 202120956351.5, named communication valve, return valve, pressure valve assembly and water supply system" and "applied on April 30, 2021, with application number 202120955921.9, The priority of the name is "communication valve, return valve, pressure valve assembly and water supply system". technical field [0003] The invention relates to the technical field of water supply systems, in particular to a water return valve and a water supply system. Background technique [0004] In the related art, the water supply system is generally used to provide cold and hot water for users. Traditional water supply systems usually include structures such as water heaters, cold water pipes, hot water pipes, pressure valves, and water mixing devices. The water inlet pipe of the water heater and the cold water inlet end of the water mixing device are connected to the cold wat...

AI Technical Summary

Problems solved by technology

[0005] However, before the water supply system is turned on, there will be some cold water remaining in the end pipeline of the water supply system. If the water supply system is turned on directly, this part of cold water will be output to the user, which will cause the water supply system to output cold water at the beginning, which will cause the water supply system to less comfortable

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