Temperature-controlled mixing valve structure

Abstract

The invention discloses a temperature-controlled mixing valve structure which comprises a valve body assembly, a temperature controller and a constant temperature controller, wherein a reset spring of the constant temperature controller supports a sliding bar assembly which is in dynamic fit with a thermo-sensitive element; the sliding bar assembly comprises a sliding bar, a water mixer, a spring pad and a protection spring, wherein the sliding bar is supported between a valve-body upper cover and a mixed water outlet by the reset spring; the sliding bar is provided with an inner sleeve and an outer sleeve, and a water channel is formed between the inner sleeve and the outer sleeve; the upper part of the water mixer is distributed with a plurality of water inlet holes, and the lower part thereof is fixed at the upper end of the inner sleeve of the sliding bar; the spring pad is supported by the protection spring and positioned in the inner sleeve of the sliding bar; the thermo-sensitive element is arranged in the water mixer, the spring pad and the inner sleeve of the sliding bar in sequence in a penetrating way; the upper end of the spring pad is matched with the thermo-sensitive in a contacting way; the upper part of the sliding bar, the upper cover and the external wall of the water mixer form a first water mixing cavity; and the internal wall of the upper part of the water mixer and the external wall of the thermo-sensitive element form a second water mixing cavity. Cold water and hot water are mixed for twice, thus improving the water mixing effect and achieving the purpose of controlling the stability of the water temperature. In addition, a sealing pad is arranged at the hot water end of the valve body, thus improving the performance of losing efficacy of cold water, and realizing excellent safety in use.

Description

technical field [0001] The invention relates to a water outlet valve structure, in particular to a temperature-controlled mixing valve structure for controlling hot and cold water at constant temperature. Background technique [0002] In the sanitary hot water supply system of some special places such as hospitals, nursing homes, kindergartens and nursing homes, it is necessary to strictly avoid the high-temperature hot water from the taps from causing burns to some vulnerable groups such as the elderly, weak, sick, disabled, pregnant and other users . The water outlet valve that controls the constant temperature needs to output water at a stable and reliable constant temperature according to the set value. When the cold water supply is cut off, the temperature of the mixed water should not exceed the initial set value too much to prevent the excessive water temperature from causing harm to the human body; when the hot water supply is cut off When the instant hot water fail...

AI Technical Summary

Problems solved by technology

In addition, in actual use, there is a poor water supply situation with a pressure difference of 2.5 bar between cold and hot water

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