| 摘要 |
<p>A pulse tube refrigerating machine advantageous for increasing refrigeration capacity is provided. A pulse tube refrigerating machine comprises a pressure waveform generating device (1) for producing a pressure waveform for a refrigerant gas, pulse tubes (14, 20) into which a refrigerant gas having the pressure waveform flows and whose one end is a lower temperature end and whose other end is a higher temperature end, cold storage units (8, 10) for pre-cooling the refrigerant gas flowing into the pulse tubes (14, 20), a pressure waveform phase control element which has a buffer tank (23) communicating with the higher temperature end of the pulse tube (20) and which controls the phase of the pressure waveform of the refrigerant gas for the purpose of refrigeration at the lower temperature end of the pulse tube (20), and a vacuum heat-insulation tank (24) having a vacuum heat-insulation chamber (24w) for receiving the pulse tube (20). The buffer tank (23) is disposed in the vacuum heat-insulation chamber (24w) of the vacuum heat-insulation tank (24).</p> |
