发明名称 |
Cryogenic refrigerator |
摘要 |
An inverter (22) is provided between a power source (20) and a suction/discharge valve driving motor (14) that controls cycle time of suction and discharge of a refrigerator unit (10). An output frequency of the inverter (22) is controlled in accordance with output of a sensor (24) that detects temperature of a thermal load portion (11) of the refrigerator unit (10). This enables temperature adjustment of individual refrigerators with a highly reliable method without using an electric heater.
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申请公布号 |
US7555911(B2) |
申请公布日期 |
2009.07.07 |
申请号 |
US20050523977 |
申请日期 |
2005.08.03 |
申请人 |
SUMITOMO HEAVY INDUSTRIES, LTD. |
发明人 |
TANAKA HIDEKAZU |
分类号 |
F25B1/00;F04B37/08;F25B9/14;F25B49/00;F25J1/00 |
主分类号 |
F25B1/00 |
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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