Patent ID: 6442947
Filing Date: 2002-09-03
Classification: F25B

Abstract:
In an orifice pulse tube refrigerator, an improvement comprising:compressor means; regenerator means having a first end and a second end, with said first end of said regenerator means connected to said compressor means; cold heat exchanger means having a first end and a second end, with said first end of said cold heat exchanger means connected to said second end of said regenerator means; pulse tube means having a first end and a second end, with said first end of said pulse tube means connected to said second end of said cold heat exchanger means; a cold throat having a large end and a small end, with said large end of said cold throat connected to said second end of said pulse tube; a vortex tube having a first end and a second end, with said first end of said vortex tube connected to said small end of said cold throat; vortex generator means connected to said vortex tube adjacent to said first end of said vortex tube; reservoir means connected to said vortex tube through said vortex generator means; and double inlet passage means having a first end and a second end, with said first end of said double inlet passage means connected to said second end of said vortex tube and said second end of said double inlet passage means connected to said compressor.