Breakthrough-free constant temperature water mixing valve

Abstract

The invention relates to a valve, in particular to a breakthrough-free constant temperature water mixing valve. The breakthrough-free constant temperature water mixing valve comprises a casing and a cavity installed in the casing, wherein four paralleled sealing rings are arranged on the cavity to form a left water inlet bin, a water outlet bin and a right water inlet bin, and a left water inlet channel, a right water inlet channel, a first water return channel, a second water return channel and a central mixing water channel are arranged on the cavity. Two ends of the left water inlet channel are communicated with the left water inlet bin and a valve plate bin respectively, two ends of the right water inlet channel are communicated with the right water inlet bin and the valve plate bin respectively, two ends of the first water return channel and two ends of the second water return channel are communicated with the valve plate bin and a thermostat bin respectively, and two ends of the central mixing water channel are communicated with the thermostat bin and the water outlet bin. A water breakthrough phenomenon is completely eradicated by adopting the constant temperature water mixing valve, a check valve is not required at the position of a cold-hot water inlet, and the problems caused by check valve faults are solved.

Description

technical field [0001] The invention relates to a valve, in particular to a constant temperature water mixing valve without connecting water. Background technique [0002] Water mixing valves must be used in various shower facilities. After mixing hot water with higher temperature and cold water with lower temperature in a certain proportion, warm water with moderate temperature is produced for people to use. The traditional water mixing valve is to change the ratio of cold and hot water by adjusting the water flow of the hot water inlet and the cold water inlet respectively, so as to adjust the water temperature. The proportion of water flow makes the water outlet of the mixing valve fluctuate between hot and cold, which cannot achieve the purpose of constant temperature use. The existing thermostatic water mixing valve utilizes a heat sensitive element to control the opening size of the hot water inlet and the cold water inlet, thereby changing the ratio of cold and hot w...

AI Technical Summary

Problems solved by technology

When the valve is closed, there must be a straight-through channel between the cold water inlet and the hot water inlet. When there is a difference in the pressure of the cold and hot water, the water with high pressure will flow to the end with low pressure. In order to avoid the phenomenon of water flow, this The cold and hot water of this kind of constant temperature mixing valve, such as the water outlet, must be equipped with a check valve. The setting of the check valve makes the structure complicated, increases the production cost, and also increases the probability of failure.

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