Patent ID: 6082117
Filing Date: 2000-07-04
Classification: F25B

Abstract:
A pulse tube refrigerating system comprising:a refrigeration generation unit including a cold head with two ends, a pulse tube having a low temperature end connected to one end of the cold head, and a regenerator having a low temperature end connected to the other end of the cold head;a pressure vibration source connected to a high temperature end of the regenerator and serving to vibrate a working gas in the refrigeration generation unit by expanding and compressing the working gas; anda flow control device connected to a high temperature end of the pulse tube for establishing a phase difference between vibration and displacement of the working gas, said flow control device including a buffer tank, a conduit interposed between the buffer tank and the high temperature end of the pulse tube, a restrictive member placed at one of the high temperature end and the low temperature end of the pulse tube, said restrictive member being configured to restrict the working gas before the working gas enters the pulse tube, and a flow adjusting member interposed between the restrictive member and the pulse tube, said flow adjusting member having a plurality of axial passages therethrough.