发明名称 |
LIQUEFYING AND STORING A GAS |
摘要 |
Apparatus and methods for improving the safety and efficiency and decreasing the cost of producing liquid oxygen with a small-scale use liquefaction device, according to various embodiments of the present invention. In one embodiment, a switch is electrically coupled to a storage dewar pressurizing means, the switch positioned to be activated by a portable dewar upon engagement of portable dewar with storage dewar. Cryocooler and/or cooling fan enter low power mode when dewar liquid level reaches a predetermined level, and to return to a fall power mode when dewar liquid level drops to another predetermined level. A cold finger of the cryocooler extends within the dewar and may prevent overfilling of the dewar. The cold finger has a temperature gradient. As the gas liquefies and fills the dewar, the liquid level rises only to a level on the cold finger at which the temperature exceeds the boiling point of oxygen. |
申请公布号 |
EP1805463(A2) |
申请公布日期 |
2007.07.11 |
申请号 |
EP20050814957 |
申请日期 |
2005.10.25 |
申请人 |
RESPIRONICS IN-X, INC. |
发明人 |
DICKERSON, BRIAN, E.;DELVE, STEVE, W. |
分类号 |
F25B9/00;F17C3/10;F17C5/02;F17C9/02;F25J1/00 |
主分类号 |
F25B9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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