Refrigeration – Storage of solidified or liquified gas – Liquified gas transferred as liquid
Patent
1994-03-29
1995-08-22
Capossei, Ronald C.
Refrigeration
Storage of solidified or liquified gas
Liquified gas transferred as liquid
62 511, F17C 902
Patent
active
054429277
ABSTRACT:
A self-contained device for the supply of energy to an apparatus (7) driven by gas under pressure, comprises a portable reservoir (1) of cryogenic liquid, and structure associated with the reservoir to withdraw and vaporize liquid from the reservoir and to send it to the apparatus (7). Two circuit portions (2.sub.1, 2.sub.2) incorporate vaporizers (5.sub.1, 5.sub.2) and are delimited between non-return valves (4.sub.1, 4.sub.2) upstream and control valves (6.sub.1, 6.sub.2) downstream. When open, the control valves drive the apparatus (7). The reservoir (1) is of the double wall type (1.sub.1, 1.sub.2), at least one upstream part of the circuit portion (2.sub.1, 2.sub.2) being disposed between these walls (1.sub.1, 1.sub.2). The two circuit portions are in parallel (2.sub.1, 2.sub.2) and the respective valves (6.sub.1, 6.sub.2) are sequentially controlled by a control device (9, 12) which is sensitive to the pressure (P.sub.1, P.sub.2) prevailing in the circuit portions (2.sub.1, 2.sub.2). Preferably, the apparatus (7) is a pump for supplying cryogenic liquid contained in the reservoir (1) to an installation for freezing food stuffs.
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Capossei Ronald C.
L'Air Liquide Societe Anonyme Pour l'Etude et, l'Exploitation de
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