HEAT TUBE SCREW PUMP Russian patent published in 2010 - IPC F04D13/04 F01K27/00 

FIELD: engines and pumps.

SUBSTANCE: proposed pump comprises cylindrical housing wherein inner surfaces of top and bottom face walls are jointed by wick laid along housing central axis, the housing being covered by shell ring to make gaps nearby face walls. Evaporation chamber inner surfaces of sidewalls and top face wall are covered by screen made from thin layer of porous material jointed to wick at the center of top face cover. Power turbines are arranged coaxially one behind the other with their peripheral and inner edges of vane edges rigidly jointed to working chamber inner surface and outer surface of shell ring along normal to said turbines. Screw is arranged on working chamber outer surface. Evaporation chamber inner surfaces of sidewalls and top face wall are covered by screen made from thin layer of porous material jointed to wick at the center of top face cover. Casing that covers the screw is jointed to housing via ring seals and is furnished with intake and discharge branch pipes.

EFFECT: higher efficiency of pump.

2 dwg