ROTARY HEAT GENERATING PUMP Russian patent published in 2000 - IPC

FIELD: off-line closed-circuit heat-supply systems and process liquid heating systems. SUBSTANCE: pump has hollow housing with suction pipe for admitting liquid being heated and delivery pipe for conveying hot liquid. Housing accommodates rotor in the form of dual-flow centrifugal impeller with passages over periphery. Arranged concentrically to rotor is stator with passages. Rotor passages are, essentially, round cylindrical Venturi tubes and stator ones are suddenly expanding tubes. Provision is made for reducing rate of water hammers and for ensuring steady cavitation not only in stator passages but also in rotor ones. EFFECT: simplified design. 2 cl, 6 dwg