DELIVERY WATER HEATER Russian patent published in 2017 - IPC F24H1/24 

FIELD: heating.

SUBSTANCE: invention relates to production of hot water. Delivery water heater comprises a combustion chamber with a burner device, screen and water jacket. Entire inner surface of the water jacket surrounding the burner and being simultaneously used as a heat exchanger is a radiant absorbing and convection extended heat surface. There is a perforated screen between the burner device and internal surface of the heat exchanger; the screen is heated by the burner device; the screen’s area is equal to the area of the heat exchanger; it is made from a material with a high coefficient of radiation and has additional openings. These are pressed on the cylindrical surface of the screen and ensure the lateral integrity of the emitting surface of the screen and, at the same time, the passage of combustion products. These openings are directed to the internal wall of the heat exchanger at a tangent. On the water-side the heat exchange with the inner surface of the heat exchanger, facing the screen, is ensured by a bubble boiling device.

EFFECT: use of the invention guarantees the increased heat exchange surface.

1 cl, 2 dwg