Thermoacoustic Refrigeration Device

PROBLEM TO BE SOLVED: To provide a thermoacoustic refrigeration device that effectively improves output of a refrigerator.SOLUTION: The thermoacoustic refrigeration device 1 includes: an gas column 2 filled with gas; a motor 3 having a heated-part heat exchanger 5, a regenerator 7, and an ordinary-temperature-part heat exchanger 6 arranged axially in the gas column 2; a refrigerator 4 having a cooler-part heat exchanger 8, a regenerator 10, and an ordinary-temperature-part heat exchanger 9 arranged axially in the gas column 2; and a bulkhead 12 arranged in the gas column 2 adjacent to the cooler-part heat exchanger 8 to prevent circulation flow of the gas filled in the gas column 2. In a position where the refrigerator 4 and the bulkhead 12 of the gas column 2 are arranged, a large-diameter part 11 having an inner diameter larger than the gas column 2 and extended axially with the same diameter is formed. The refrigerator 4 and the bulkhead 12 are housed in the large-diameter part 11.