公开(公告)号：US20090158752A1

公开(公告)日：2009-06-25

申请号：US12337137

申请日：2008-12-17

申请人： Nicholas John CLAYTON ,  David Gubbins ,  Trevor Bryan Husband ,  Philip Alan Charles Walton

发明人： Nicholas John CLAYTON ,  David Gubbins ,  Trevor Bryan Husband ,  Philip Alan Charles Walton

IPC分类号： F25B9/14 ,  F25B19/00 ,  G01R33/3815

CPC分类号： F25B9/00 ,  F04B41/02 ,  F25B9/14 ,  F25B45/00 ,  F25B2400/16 ,  F25B2600/05 ,  G01R33/3804 ,  G01R33/3815 ,  H01F6/04

摘要： A compressor (1) including a compressor mechanism; an input line (12) for providing gas to the compressor; and an output line (14) for providing compressed gas from the compressor. The compressor may supply gas at a first pressure or at a second pressure, by variation of the charge pressure within a gas circuit. A buffer volume and arrangement of valves, contained within the compressor, facilitate the change in static charge pressure. The electrical power drawn by the compressor is reduced when the charge pressure is reduced. Changing the charge pressure in the compressor also varies the cooling power delivered by the refrigerator. Therefore, this variable charge compressor can be used to reduce the electrical power drawn by an MRI system when it is in standby, and the full refrigeration capability is not required. Also, this has the effect of reducing wear and increasing the life of certain components within the refrigerator and compressor.

摘要翻译： 一种压缩机（1），包括压缩机构; 用于向压缩机提供气体的输入管线（12） 和用于从压缩机提供压缩气体的输出管线（14）。 压缩机可以通过气体回路内的充气压力的变化在第一压力或第二压力下供应气体。 包含在压缩机内的阀的缓冲体积和排列有利于静电荷压力的变化。 当充气压力降低时，由压缩机牵引的电力减小。 改变压缩机中的充气压力也改变了冰箱传递的冷却功率。 因此，该可变充气压缩机可以用于在待机状态下降低由MRI系统抽取的电功率，并且不需要完全制冷能力。 此外，这具有减少磨损并增加冰箱和压缩机内的某些部件的寿命的效果。