Steam-water mixing heater is a new type of heating device that directly mixes steam and water (or other liquids). It uses steam to directly heat water (or liquid). There are currently two types: immersed type and pipeline type. Compared with other indirect heat exchange equipment, the steam-water mixing heater has the characteristics of high heat exchange efficiency (almost 100%), low noise, simple installation, and low cost. It is the most ideal steam heating equipment in bath water supply, hot water supply for production and domestic use, and hot water heating systems. At the same time, it is widely used in the mixing and heating of fluids in food brewing, medicine, chemical industry, petroleum, rubber, paper making and other industries.