Patent ID: 6622491
Filing Date: 2003-09-23
Classification: F02G,F25B

Abstract:
A periodically operating refrigeration machine, comprising: a thermal performance amplifier based on a pulse tube process and a pulse tube cooler arranged in series with a heat exchanger operating as a cooler, said thermal performance amplifier including a compressor arrangement for compressing gas, a first heat exchanger for removing heat from the gas compressed by said compressor arrangement, a regenerator arranged in series with said first heat exchanger, a second heat exchanger arranged in series with said regenerator for supplying heat to the gas in said performance amplifier, a pulse tube arranged in series with said second heat exchanger, said pulse tube comprising a third heat exchanger arranged in said pulse tube for removing heat therefrom, (pulse tube cooler) a fourth heat exchanger, a fifth heat exchanger and an expander all arranged in series in said pulse tube, said refrigeration machine being a Stirling-type machine including in said compressor arrangement a compressor piston and as expander a double inlet phase shifter in the form of pipe connection with a variable cross-section from the third heat exchanger to the fifth heat exchanger and a pipe connection with a variable cross-section between the fifth heat exchanger and an expansion container.