Intelligent thermostatic valve

Abstract

The invention provides an intelligent thermostatic valve having a valve body and a valve core, the cavity of the valve body is separated into a hot water cavity, a mix water cavity and a cold water cavity in turn; a hot water inlet, a warm water outlet, a cool water inlet and a cool water outlet are arranged on the valve body, the warm water outlet is provided with a warm water outlet short connection pipe, the cool water inlet is provided with a cool water short connection pipe; valve openings are provided on both ends of the mix water cavity, the valve core is arranged in the mix water cavity in mode of reciprocating translation in axial direction of the mix water cavity, and blanking adapters at both ends are respectively adapted to the valve openings on both ends of the mix water cavity to control ratio of cool water and hot water applied into the mix water cavity; an end of the valve core is connected to linear type stepper motor arranged outside the valve body by a motor shaft; a warm water temperature sensor is installed in the warm water short connection pipe; a inlet water volume meter and a matched inlet water flow sensor are installed in the warm water short connection pipe. The invention has characters of high versatility, good effect of thermostatic control, reasonable and simple structure, good water mixing effect, thereby especially being suitable for electric water heater.

Description

technical field [0001] The invention relates to an electric water heater, in particular to an intelligent thermostatic valve which can automatically adjust the ratio of cold water and hot water to maintain a constant outlet water temperature. Background technique [0002] The outlet water temperature adjustment of the existing electric water heater is generally manually adjusted. The use process is usually: first plug in the electricity to heat the water in the water tank to a certain temperature, then manually adjust the cold and hot water outlet flow to adjust the outlet water temperature. As the temperature of the water in the water tank drops, it is necessary to manually readjust the ratio of cold and hot water and the flow rate of the water to maintain an appropriate water temperature. Due to the inaccuracy of manual adjustment, it will be difficult to quickly adjust the water temperature to the desired water temperature, which is a waste of time and water resources, a...

AI Technical Summary

Problems solved by technology

The first is to adopt a mechanical thermostatic valve, such as the "constant temperature electric water heater with adjustable outlet temperature" disclosed in Chinese patent CN200420014468.8 and the "constant temperature and pressure balance controller for electric water heater" disclosed in CN200420082840.9. The sensitive element is used as a temperature sensor to automatically adjust the opening of the cold and hot water valves to achieve constant temperature control. However, due to the large fluctuations in the water temperature in the water heater during use, it is difficult to always achieve a satisfactory constant temperature. effect, especially when the water pressure or water flow of the public pipe network fluctuates greatly, it is more difficult to achieve a satisfactory constant temperature effect

The second is to try to realize automatic constant temperature adjustment by using electronic control technology, such as the "automatic constant temperature and constant current electric water heater" disclosed in Chinese patent CN200720120008.7. The control system and the mechanical structure of the constant temperature adjustment are installed in the shell of the water heater in a decentralized manner, occupying a large space, and the structure is not very reasonable. Types, Specifications Common in Electric Water Heaters

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