| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulse pipe refrigerating machine capable of performing maintenance of an orifice while keeping circulation of a refrigerant gas in components, and shortening a maintenance time. SOLUTION: In this pulse pipe refrigerating machine having a compressor delivering the refrigerant gas of high pressure and sucking the refrigerant gas of low pressure, a housing connected with a cold head comprising a cold storage pipe and a pulse pipe in which the refrigerant gas is circulated, and one or more orifices controlling the flow of the refrigerant gas, and connecting the compressor, the housing and the orifices by piping, the orifices are disposed outside of the housing, connecting means are disposed at both end sides of at least one orifice of the pipe, the connecting means has a separable/connectable structure while retaining the refrigerant gas in the pipe, and a detachable unit part including the orifice is formed when the connecting means is separated. COPYRIGHT: (C)2009,JPO&INPIT
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