COLD HEADER FOR CRYOGENIC REFRIGERATING MACHINE
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United States of America Patent
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Issued Date -
Sep 22, 2016
app pub date -
Nov 14, 2014
filing date -
Nov 18, 2013
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Abstract
A cold head for cryogenic machines comprises a displacer mounted in a working chamber of a housing. The cold head also has a high-pressure connection for supplying highly compressed refrigerant and a low-pressure connection for discharging expanded refrigerant. Also provided is a control valve arrangement for controlling the supply and discharge of refrigerant. According to the invention there is a bypass channel connecting the high-pressure connection to the low-pressure connection.
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