WATER SUPPLY AND HEATING DEVICE Russian patent published in 2003 - IPC

FIELD: cold hot water supply systems. SUBSTANCE: invention relates to hygiene equipment and it can be used in cold and hot water supply systems of residential and industrial building, cottages, green houses, garages, railway cars, vessels and mobile and stationary objects in the field. Proposed device contains inlet pressure check valve, water pump with electric drive, water heater pressure transmitter built into pipeline, temperature transmitter arranged in water heater, control unit connected to water pump electric drive, pressure transmitter and temperature transmitter, all connected by pipeline. Design peculiarity is that liquid meter is introduced additionally. Said liquid meter is made in form of hydraulic accumulator with hydraulic or electric valves and is connected with inlet of water heater through valve and with outlet of water pump. Moreover, water pump electric drive is built around three-phase ac motor with semiconductor dc/ac converters, and water heater is made in form of reservoir with electric heater, said reservoir being connected with air bleeder. Design peculiarity of proposed device is that first and second liquid level indicators are placed in pipeline connecting inlet check valve and water pump and in water heater, said indicators being electrically coupled with control unit, and control unit is built around microprocessor, outlet of meter and water heater are coupled through pipelines and dispensing cock with centrifugal spraying nozzle, water pump is coupled through inlet pressure check valve with cold water tank in which liquid level gauge is located, water heater is furnished with overheat sensor electrically connected with control unit, and pressure transmitter is arranged in pipeline connecting water pump and liquid meter. EFFECT: improved economy, efficiency, reduced overall dimensions and mass at high reliability and long service life. 8 cl, 1 dwg