WATER HEATING BOILER Russian patent published in 2015 - IPC F24H1/00 

FIELD: heating.

SUBSTANCE: water heating boiler comprises furnace, rare and face walls, gas duct and water tube heat-exchanger. The heat-exchanger is made by horizontal rib tubes. The heat-exchanger tubes are arranged in parallel with each other directly in the furnace along circumference and are equipped with branches, reverse and supply headers, and with reverse and supply branches. At the rare part of the boiler the heat-exchanger tubes are rigidly connected on the rare wall, and in the face part they are secured on the mounting plate. The mounting plate is made with possibility of free movement along studs relatively to the face wall of the boiler. The heat-exchange tubes are arranged in two layers and are connected in pairs by branches directing flow from internal layer tubes to the outside layer tubes. The outside layer tubes are connected with reverse header, and of the internal layer tubes - with supply header.

EFFECT: invention ensures increasing of the water heating boiler operation efficiency.

9 dwg