HEAT-TRANSFER DEVICE Russian patent published in 1998 - IPC

FIELD: two-phase heat- transfer devices using capillary pumping of coolants including heat pipes. SUBSTANCE: device has loop heat pipe 1 incorporating evaporator 3 with capillary structure inside it and condenser 4. Evaporator 3 and condenser 4 communicate through separate steam and condensate lines 5 and 6, respectively. Device also has flat heat pipe 2. Active zone 9 of evaporator 3 of loop heat pipe 1 is mounted inside flat heat pipe 2. External surface of active zone 9 of loop heat pipe 1 bears capillary structure in the form of, say, fine helical thread hydraulically coupled with capillary structure of flat heat pipe 2 made in the form of several layers of metal grid. EFFECT: improved heat-transfer capacity with planar contact surface in heat supply zone for any positioning in gravitational field. 3 cl, 3 dwg