发明名称 |
Refrigeration circuit for driving freezer head unit for cryogenic purposes has back pressure valve and release system with pneumatic or hydraulic control |
摘要 |
<p>The system comprises a compressor (11), high pressure freezer (12) and a back pressure release valve (13) on the low pressure side which has a sealing spring loaded piston whose shaft passes through a cylinder having a connection for application of a vacuum to control the return of the sealing piston.</p> |
申请公布号 |
DE10339843(A1) |
申请公布日期 |
2005.03.24 |
申请号 |
DE2003139843 |
申请日期 |
2003.08.29 |
申请人 |
LEYBOLD VAKUUM GMBH |
发明人 |
PIETRANGELI, MARIO;DIETZ, HOLGER |
分类号 |
F16K15/06;F25B9/14;F25B41/04;(IPC1-7):F25B9/00;F16K15/18 |
主分类号 |
F16K15/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|