WATER HEATER DESIGN Russian patent published in 2013 - IPC F24H1/20 

FIELD: heating.

SUBSTANCE: water heating system with gas water heating device is connected to cold water inlet pipe and to hot water outlet pipe. In addition, system includes electric water heater of accumulating type, which is built in series into hot water outlet pipe and equipped with thermostat. Electric water heater can be installed inside or outside gas water heating device. Holding tank of electric water heater can have accumulating volume of 20 l. Electric water heater can be installed inside gas water heating device so that it can absorb and utilise the heat that is released but not used with the above device. Electric water heater installed inside gas water heating device can be equipped with heat-conducting element introduced to combustion zone of the above device. Holding tank of electric water heater can be coated with heat-insulating material. Proposed invention is based on possibility of combining advantages of gas water heaters with advantages of electric water heaters equipped with a small tank and providing the condition for optimum operating mode and almost unchanged overall dimensions of the system due to such a combination.

EFFECT: development of such a technical solution that excludes effect of retardation even in case of frequent intake or intake of small amount of hot water, and while creating conditions for favourable energy consumption, requires low initial capital investments and can perform its functions even if supply of large amount of energy is not available.

7 cl, 3 dwg