GAS REPLACEMENT METHOD FOR EXPANDER OF CRYOCOOLER, CRYOCOOLER, AND GAS REPLACEMENT PIPE
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United States of America
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Issued Date -
Dec 19, 2024
app pub date -
Jun 12, 2024
filing date -
Jun 12, 2024
priority date (Note) -
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Abstract
A gas replacement method for an expander of a cryocooler, the expander including an expander cylinder, a pressure switching valve that switches a pressure inside the expander cylinder, a connection flow path from the pressure switching valve to the expander cylinder, and an expander motor that drives the pressure switching valve, includes connecting a nonflammable gas source to the connection flow path or the expander cylinder, and purging a residual gas in the expander cylinder with a nonflammable gas from the nonflammable gas source while the expander motor is stopped.
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