| 摘要 |
A pulse tube refrigerator includes a refrigerating portion including a regenerator, a low temperature heat exchanger, a pulse tube and a high temperature heat exchanger fluidically connected in this order. A first pressure oscillator includes a first compression source, a first high pressure supply valve, and a first low pressure supply valve. The regenerator is connected with outlet and inlet ports of the first compression source via the first high pressure supply valve and the first low pressure supply valve, respectively. A second pressure oscillator is provided independently of the first pressure oscillator and has a second compression source, a second high pressure supply valve, and a second low pressure supply valve. The high temperature heat exchanger is connected with outlet and inlet ports of the second compression source via the second high pressure supply valve and the second low pressure supply valve, respectively.
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