A mixing and regulating thermostatic water valve installed in a water storage electric water heater

Abstract

A mixing adjusting constant-temperature water valve mounted in a water storage type electric water heater is provided with a valve body, a hot water side pipe, a hot water pipe, a cold water side pipe, a cold water pipe, a cold water inlet and a mixing water pipe which are through; a water temperature adjusting block is arranged in an inner cavity of the valve body and is in attached connection with a hot water adjusting opening and a cold water adjusting opening in the two sides; a left pressure cavity and a right pressure cavity are formed in the two sides of the lower portion of the water temperature adjusting block and are in through connection with the hot water pipe and the cold water pipe correspondingly, and the cold water pipe and the hot water pipe are each internally provided with a one-way valve; and a temperature sensor is arranged in the mixing water pipe, a water flow sensor is arranged in the cold water inlet, and the cold water side pipe and the hot water side pipe are in direct matched sealing connection with the cold water inlet and a hot water inlet in an inner container correspondingly. The cold and hot water dynamic pressure difference generated by the water amount changes of the electric water heater can be greatly reduced, and therefore the constant-temperature water outlet temperature is precisely constant to preset temperature, the water outlet temperature cannot greatly overshoot, energy is saved, and the work life is long.

Description

technical field [0001] The invention relates to the technical field of liquid temperature regulating valves, in particular to a mixing regulating thermostatic water valve installed in a water storage type electric water heater. Background technique [0002] The Chinese Patent Gazette discloses a constant temperature electric water heater, the publication number of which is CN101726093B. The constant temperature electric water heater is a constant temperature electric water heater with a digital constant temperature component installed in the electric water heater, and an ordinary water storage type electric water heater combined with a digital constant temperature component. . It has the following deficiencies: (1) The digital constant temperature component does not have the function of offsetting the pressure difference between cold and hot water, and there is only a one-way valve for balancing the pressure of the safety valve on the side of the cold water inlet of the ther...

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Problems solved by technology

It has the following deficiencies: (1) The digital constant temperature component does not have the function of offsetting the pressure difference between cold and hot water, and there is only a one-way valve for balancing the pressure of the safety valve on the side of the cold water inlet of the thermostatic valve body. The one-way valve is not installed at the cold water port and the hot water port of the thermostatic valve body at the same time

In serious cases, since the dynamic pressure on the cold water side is greater than that on the hot water side, and because there is no one-way valve on the hot water side, the cold water can pass over the pendulum block and enter the hot water side pipe until the pendulum block is rotated or the dynamic pressure is adjusted. After the difference is restored, and the cold water on the hot water side flows clear, the outlet water temperature can return to a constant temperature state, and the fluctuation of the outlet water temperature caused by the above process will be greater

[0003] (2) Since the above constant temperature electric water heater and its constant temperature water valve are not equipped with water flow sensors, the constant temperature components cannot sense when the constant temperature electric water heater enters the constant temperature working state. If the constant temperature components are in the constant temperature adjustment state for a long time, it will shorten its working life

[0005] (4) The existing thermostatic water valve system uses stepping motor or servo motor as the action element, which consumes a lot of power. For electric water heaters powered by backup batteries, due to the large power consumption of the thermostatic water valve, even if the capacity of the backup battery is large (and its volume is also larger), it cannot satisfy the normal operation of the thermostatic water valve for a long period of time.

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