Stirling cycle type cold air generating device

Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...

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62434, F25B 900

Patent

active

052840220

ABSTRACT:
A Stirling cycle type cold air generating device comprising a Stirling module having a module cylinder and a module piston disposed in the module cylinder to be vertically reciprocated, a magnetic pole piston extending downwardly from a lower end of the module piston, the magnetic pole piston being moved integrally with the module piston, a pump cylinder disposed beneath a module cylinder of a module and isolated therefrom, and a pump piston disposed in the pump cylinder to be vertically reciprocated, the pump piston defining an upper pumping chamber for pumping the heat transfer medium and a lower pumping chamber for pumping the brine in the interior of the pump cylinder. The magnetic pole piston and the pump piston are magnetically connected by means of a magnetic coupling disposed around both the module cylinder and the pump cylinder to move vertically therealong. The magnetic coupling has an upper end serving as an electromagnet for applying a magnetic attraction to the magnetic pole piston and a lower end serving as an electromagnet for applying a magnetic attraction to the pump piston.

REFERENCES:
patent: 4843826 (1989-07-01), Malaker
patent: 4872313 (1989-10-01), Kazumoto et al.
patent: 4928502 (1990-05-01), Kumada et al.
patent: 5142872 (1992-09-01), Tipton

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