COLD END HEAT EXCHANGER OF PULSE TUBE REFRIGERATOR

摘要

The invention to be configured compact prevent the heat transfer resistance is generated, yet efficiently take advantage of the small space inside the freezer, and so that heat conducted from the low-temperature portion center, increase the surface area and time for freezing fluid is in contact with the low temperature section to thereby relates to a low-temperature heat exchanger of the so as to improve the heat exchange efficiency pulse tube refrigerator, the technical construction, installed in close contact with the periphery of the low-temperature portion therein has a plurality of flow passage formed through the vertical and horizontal to intersect each other, heat conduction block and , is installed on the rim portion of the heat transfer block gives restricting the flow path in fluid communication with the outside comprises a plurality of cover plates is that one and the other side refrigerating fluid inlet and outlet are formed, in the fluid channel is connected to the inlet and outlet via the refrigerating fluid to a flow passage inside the thermally conductive block It characterized in that the flow to be turned on.