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1. 发明申请

WO1998011394A1 CRYOGENIC REFRIGERATOR AND CONTROLLING METHOD THEREFOR 审中-公开
标题翻译：低温冷冻机及其控制方法
公开(公告)号：WO1998011394A1
公开(公告)日：1998-03-19
申请号：PCT/JP1997003145
申请日：1997-09-05
申请人： DAIKIN INDUSTRIES, LTD. , OKAMOTO, Masakazu , KURIHARA, Toshiyuki
发明人： DAIKIN INDUSTRIES, LTD.
IPC分类号： F25B09/14
CPC分类号： F25B9/14 , F25B2309/006
摘要： A gas-pressure driven type cryogenic refrigerator in which a cylinder (2) is partitioned into a lower pressure chamber (20), an upper pressure chamber and expansion chambers (30, 31) by a slack piston (17) and a displacer (22) connected thereto. A rotary valve (35) is adapted to set up alternately a high-pressure open-valve state that high-pressure helium gas is supplied into the upper pressure chamber (29) and the expansion chambers (30, 31) and a low-pressure open-valve state that helium gas is discharged from the upper pressure chamber (29) and the expansion chambers (30, 31), whereby the slack piston (17) is driven by virtue of the difference in gas pressure between the upper and lower chanbers (29, 20) to thereby reciprocate the displacer (22). The reciprocation produces cryogenic coldness. The time ratio of the low-pressure open-valve state is set at 55-65 %, higher than that of the high-pressure open-valve state, thereby improving the capability of the refrigerator.
摘要翻译：一种气压驱动型低温制冷机，其中气缸（2）通过松弛活塞（17）和置换器（22）分隔成低压室（20），上压室和膨胀室（30,31））。旋转阀（35）适于交替地将高压氦气供应到上压室（29）和膨胀室（30,31）中的高压开阀状态和低压氦气打开阀状态，氦气从上压力室（29）和膨胀室（30,31）排出，由此松弛活塞（17）由于上下气室之间的气压差而被驱动（29,20），从而使置换器（22）往复运动。往返产生低温感冒。低压开阀状态的时间比设定为高于高压开阀状态的55-65％，从而提高冰箱的能力。

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