LOW-TEMPERATURE HOT-WATER BOILER Russian patent published in 2007 - IPC F24H1/36 

FIELD: water heating and heat supply.

SUBSTANCE: hot-water boiler comprises main body, furnace joined with the second-pass convective gas-tube bundle through inner rotary chamber in gas flow direction in lower furnace part, wherein the joint "floats" in water inside boiler. The boiler has water cylindrical chamber with the third-pass convective gas-tube bundle arranged therein, which is located over main body, extends in vertical direction and is connected to main boiler body in gas flow direction through outlet and intermediate chambers. Water cylindrical chamber is hydraulically connected to main body through pipeline section. Vertical dividing partition adapted to separate water volume located near furnace from water volume of the second-pass convective gas-tube bundle is made in main boiler body and defines gaps in lower part thereof to provide water discharge from space located near furnace. Removable gas distribution chamber is connected to rotary chamber and to tube plate of the second-pass convective gas-tube bundle. Lower part of removable gas-distribution chamber and lower part of rotary chamber are inclined in direction opposite to gas flow direction.

EFFECT: increased power range, simplified structure, improved operational conditions, possibility of effective boiler-room space usage.

2 cl, 3 dwg