HEAT PIPE TYPE RADIATOR FOR TWO-PHASE FLUID LOOP TYPE HEAT CONTROL SYSTEM

摘要

PROBLEM TO BE SOLVED: To improve the condensation efficiency of a refrigerant and to improve the efficiency of heat transfer to a heat pipe by a method wherein the outer periphery of a spiral fin is adhered to the pipe wall of a header part, a flow passage for a refrigerant flowing through a header part is formed in a helical state. SOLUTION: A spiral fin 13 is arranged at a base end bent part 10a of a heat pipe 10 in a header part 5 of a heat pipe radiator. The outer peripheral edge of the spiral fin 13 is adhered on the inner peripheral surface of the pipe wall of the header part 5 and a helical refrigerant flow passage 14 is formed on the outer peripheral side of the base end bent part 10a of the heat pipe 10. This constitution separates gas liquid of gas liquid two-phase refrigerant, flowing through the refrigerant flow passage 14, from each other through operation of a centrifugal force, and brings a gas phase part into contact with the base end bent part 10a of the heat pipe 10. Thus, the condensation efficiency of a gas phase part, i.e., the condensation efficiency of a refrigerant, is improved. Further, the efficiency of heat transfer to the heat pipe 10 is improved by the spiral fin 13 and radiation from a radiator panel 10 is effected with high efficiency.