Constant temperature water mixing valve

Abstract

The invention discloses a constant temperature water mixing valve which includes a stepping motor 1, a bracket 2, a valve body 3, a valve element 5 and a screw rod and nut driving mechanism, wherein four close nipples are arranged on the valve body 3; an interface 32 is a hot water pipe interface; an interface 33 is a cold water pipe interface; an interface 31 is a water outlet of the water mixingvalve; an interface 34 is a valve element driving port; a sealing nut is arranged on the interface 34; the stepping motor is connected with a screw rod through a coupling; the screw rod is used for driving a nut so as to drive a valve rod and the valve element to move; during use, a temperature sensing probe is arranged at a water outlet pipe, and a controller controls the valve element to move according to the temperature of water flowing out so as to adjust the temperature of mixed water to be equal to the setting temperature. The water mixing valve is simple in structure, reliable to use,low in driving force, small in occupation space, low in cost, accurate in temperature adjustment, and quick in response, is an ideal constant temperature water mixing valve, and can be widely appliedto domestic appliances.

Description

technical field [0001] The invention relates to a water mixing valve, in particular to a constant temperature water mixing valve. Background technique [0002] At present, most of the mixing valves on the market are manual mixing valves. There are such problems in manual mixing valves. One is that it is not easy to adjust accurately. There are also special mixing valves, many of which are mechanical. The structure of the mechanical thermostatic mixing valve body is usually very complicated. If there are too many impurities in the water, it will become insensitive after a long time, or it cannot be used at all. Electric daily I didn’t find it in my life. Through patent inquiry, I found that there is an electric mixing valve, which drives the gear through a stepping motor, and the gear drives the valve body of an ordinary mixing valve. What’s wrong with this mixing valve? The volume comparison It is large and the structure is relatively complicated. If it is used in household...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the mixing valves on the market are manual mixing valves. There are such problems in manual mixing valves. One is that it is not easy to adjust accurately. There are also special mixing valves, many of which are mechanical. The structure of the mechanical thermostatic mixing valve body is usually very complicated. If there are too many impurities in the water, it will become insensitive after a long time, or it cannot be used at all. Electric daily I didn’t find it in my life. Through patent inquiry, I found that there is an electric mixing valve, which drives the gear through a stepping motor, and the gear drives the valve body of an ordinary mixing valve. What’s wrong with this mixing valve? The volume comparison It is large and the structure is relatively complicated. If it is used in household appliances, the cost is high and it takes up a lot of space. If it is not directly driven by gears, due to the relatively large driving force, the required motor power will be relatively large, which will lead to high cost and large volume. Usually we turn the water mixing valve by hand, in fact, it is turned by the handle on the water mixing valve. The handle is actually a lever. It is impossible to use the handle directly with the motor drive, so the force required for the motor drive is large, and According to the structural characteristics of ordinary water mixing valves, if the pressure is higher, the driving force will be greater, so this electric muddy water valve is not advisable

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