F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
327/3
F25B 21/00 (2006.01)
Patent
CA 1197568
Abstract of the Disclosure A working material used in a magnetic refrigerator radiates heat when it is magnetized and absorbs heat when it is demagnetized. The working material is cylindrical and extends vertically. A heat pipe has a cylindrical internal space directly surrounding the peripheral surface of the working material and con- taining helium gas as a heat medium. The peripheral surface of the working material in contact with the internal space functions as a condensing surface of the heat pipe. A superconductive coil surrounds the working material and intermittently applies a magnetic field thereto. A refrigerator unit supplies a cooling space with helium gas at 20°K or below. The helium gas from the refrigerator unit removes heat produced from the working material when it is adiabatically magnetized by the coil. When the working material is adiabatically demagnetized, it rapidly absorbs heat to cool the helium gas in the internal space of the heat pipe. The helium gas condenses on the peripheral surface of the working material, and falls in drops into the internal space to be stored at the lower end portion thereof. Thus, heat is transferred in one direction or upward in the heat pipe.
429682
Nakagome Hideki
Yasuda Satoshi
Ridout & Maybee Llp
Tokyo Shibaura Denki Kabushiki Kaisha
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