PULSE TUBE REFRIGERATOR

摘要

In a pulse tube refrigerator, a first pulse tube has a low-temperature end, and a high-temperature end connected to a compressor. A first regenerator has a low-temperature end connected to the low-temperature end of the first pulse tube, and a high-temperature end connected to the compressor. A second pulse tube has a high-temperature end connected to the compressor, and a low-temperature end having a lower temperature than the low-temperature end of the first pulse tube. A second regenerator has a high-temperature end, and a low-temperature end connected to the low-temperature end of the second pulse tube, and is arranged side by side with the second pulse tube. The second pulse tube includes a narrowed portion nearer a low-temperature end side than a position corresponding to the high-temperature end of the second regenerator.

主权项

1. A pulse tube refrigerator comprising:
a compressor that compresses a refrigerant gas; a first pulse tube that has a low-temperature end and a high-temperature end connected to the compressor; a first regenerator that has a low-temperature end connected to the low-temperature end of the first pulse tube and a high-temperature end connected to the compressor; a second pulse tube that has a high-temperature end connected to the compressor and a low-temperature end having a lower temperature than the low-temperature end of the first pulse tube; and a second regenerator that has a high-temperature end and a low-temperature end connected to the low-temperature end of the second pulse tube and is arranged side by side with the second pulse tube, wherein the second pulse tube includes a narrowed portion nearer a low-temperature end side than a position corresponding to the high-temperature end of the second regenerator.