HOT-WATER BOILER Russian patent published in 2013 - IPC F24H1/40 

FIELD: heating.

SUBSTANCE: proposed hot-water boiler includes a housing with a furnace, water-wall panels, a gas duct and a water-tube heat exchanger made of tubes in the form of a coil, which are connected with taps; the housing walls are located with a gap relative to panels; tubes are located as to height at least in two parallel rows in a staggered order in the furnace above burners; tube ends are installed in the front and rear panels with possibility of being moved relative to them during heating; taps are taken beyond the furnace boundary and located between water-wall panels and the front and rear boiler water walls; burners are of injection type and located horizontally in a row in the furnace bottom part and connected to a gas header located between the front wall and the front water-wall panel and connected to an automation unit with a pressure sensor and a temperature sensor located in the furnace, and gas duct is installed on top water-wall panel closer to the rear water-wall panel.

EFFECT: improving maintainability and reliability of hot-water boiler with simultaneous improvement of its efficiency due to reduction of heat losses at water heating.

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