초록 ▼

The invention relates to cryogenic apparatus of the open cycle kind comprising a reservoir 1 for storing cryogenic fluid in liquid-vapor phase equilibrium and a phase separator 2 presenting an inlet 3 communicating with the inside of the reservoir and an outlet 4 for liberating gas, the inlet includ

The invention relates to cryogenic apparatus of the open cycle kind comprising a reservoir 1 for storing cryogenic fluid in liquid-vapor phase equilibrium and a phase separator 2 presenting an inlet 3 communicating with the inside of the reservoir and an outlet 4 for liberating gas, the inlet including an obturator 6. The technical problem is to provide an apparatus of simple operation with minimal dissipated energy. According to the invention, the phase separator 2 comprises a transfer chamber 9 with a constriction 5 at its inlet, and a further obturator 8 at its outlet, the two obturators 6,8 being operated alternately by a control unit 10. The invention is particularly applicable to zero-gravity operation, especially for space missions.

대표청구항 ▼

Cryogenic apparatus of the open cycle kind comprising a reservoir for storing a cryogenic fluid in liquid-vapour phase equilibrium, and a phase separator comprising an inlet for receiving fluid from within said reservoir and an outlet for liberating fluid outside, said inlet including inlet obturato

Cryogenic apparatus of the open cycle kind comprising a reservoir for storing a cryogenic fluid in liquid-vapour phase equilibrium, and a phase separator comprising an inlet for receiving fluid from within said reservoir and an outlet for liberating fluid outside, said inlet including inlet obturator means for closing and opening said inlet, characterized in that said phase separator comprises a transfer chamber disposed within said reservoir between said inlet and said outlet, said inlet presenting a constriction and said outlet including outlet obturator means for closing and opening said outlet, and control means for alternately closing and opening said obturator means in sequence, whereby to admit fluid from said reservoir into said transfer chamber, and subsequently to liberate said fluid from said transfer chamber. Cryogenic apparatus of the open cycle kind comprising a reservoir for storing a cryogenic fluid in liquid-vapour phase equilibrium, and a phase separator comprising an inlet for receiving mixed phase fluid from within said reservoir and an outlet for liberating fluid outside, said inlet including inlet obturator means for closing and opening said inlet, characterized in that said phase separator is disposed within said reservoir and comprises a transfer chamber between said inlet and said outlet, said inlet presenting a constriction and said outlet including outlet obturator means for closing and opening said outlet, and control means for alternatively closing and opening said inlet and outlet obturator means in sequence, whereby to admit fluid from said reservoir into said transfer chamber, to allow liquid in said transfer chamber to evaporate at a pressure intermediate between the reservoir pressure and the outlet pressure, and subsequently to liberate said fluid from said transfer chamber.