Intelligent liquid temperature and flow double-control mixer

Abstract

The invention relates to an intelligent liquid temperature and flow dual-control mixer, and aims to solve the problem that an existing controller is inaccurate in temperature and flow control. The mixer comprises a high-temperature liquid pipeline, a low-temperature liquid pipeline, a mixed liquid pipeline, a mixing stirrer and a control circuit module; each liquid pipeline is provided with a temperature control throttle valve; a servo motor and a temperature sensor on each temperature control throttle valve are connected with the control circuit module. The whole mixer is designed in a modular mode, can be conveniently combined with various existing related products for use, and has very high application value and high universality no matter in the industrial field or in daily life. The temperature control throttle valves are integrally designed, so that the intelligent liquid temperature and flow dual-control mixer is compact in structure, can assist in saving space, is not easy to damage, is modular in function, is good in control effect and is simple to maintain and repair. According to the control scheme of the mixer, temperature and flow are automatically controlled at the same time, so that the control scheme is more intelligent, faster and more stable than a traditional mode. Closed-loop control is adopted for temperature control, and therefore, control precision is high, and disturbance resistance is high.

Description

technical field [0001] The invention relates to the technical field of temperature and flow control, in particular to an intelligent liquid temperature and flow double control mixer. Background technique [0002] Whether it is in life or in industrial applications, we usually have certain requirements for the temperature and flow of liquids, such as hot water used for bathing in daily life, raw materials of a certain temperature with a specific flow in industrial production processes. Usually there are high-temperature liquid A and normal-temperature liquid B of the raw material, but an intermediate temperature liquid C is often required. Obviously, heating the normal-temperature liquid B alone or cooling the high-temperature liquid A alone is not the best solution. The best way is to use high-temperature Liquid A and low-temperature liquid B are mixed to obtain a certain intermediate temperature liquid C, and then the flow is controlled. [0003] In real life and industria...

AI Technical Summary

Problems solved by technology

[0003] In real life and industrial applications, manual adjustment or open-loop automatic adjustment is often used. When the temperature of the source of high-temperature liquid or low-temperature liquid changes greatly or the pressure changes greatly, the temperature of the mixed liquid will have a large change. Changes are difficult to meet actual needs

For example, in real life, different people have different sensitivity to water temperature and have different temperature requirements for bath water, and it also changes during the whole bathing process. The existing problems are: 1) When the mixed hot water is just opened, the water temperature Lower, it takes a long time to manually adjust the hot and cold water mixer to the temperature we are used to

2) After the temperature is adjusted, with the disturbance factors such as tap water supply pressure and water temperature changes in the water heater in actual use, the mixed hot water will also have a large temperature change

3) During use, if you turn on the hot water again after the water is cut off, there will also be 1) and 2) two similar large temperature changes that will bring people a bad experience, and even lead to colds and illnesses

4) We have also seen that there are already some temperature-controlled mixers, and there are manual mixing valves that individually control hot water and cold water. Since they do not have a closed-loop structure, they cannot fundamentally solve the problem of liquid temperature and pressure, environmental changes, and manual control. Large temperature and flow changes caused by many disturbance factors such as inaccurate control

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