HEAT EXCHANGER Russian patent published in 2003 - IPC

FIELD: thermal engineering. SUBSTANCE: apparatus has casing with inlet and outlet nozzles for heating and heated coolants, heat-transfer tubes secured in expanded partitions installed inside casing, and device for cleaning heat-transfer tubes that incorporates pressure-feed water tank with delivery and discharge pipelines, and wire coils installed in casing for displacement of turns along heat-transfer tubes under action of liquid they carry; novelty is that liquid delivery and discharge pipelines communicate with casing and form, together with expanded partition disposed on heated-coolant outlet nozzle side, pressure-feed liquid tank accommodating additional perforated plate disposed under expanded partition and provided with limit rods mounted over perimeter of holes coaxial with heat-transfer tubes, over their inner diameter, and supported by mentioned expanded partition; wire coils secured within tank above this partition are provided with cleaning members. EFFECT: enhanced quality of cleaning apparatus from deposits of all structures. 3 cl, 5 dwg