Industrial Research Limited

David Haywood

Alan James Caughley

A pressure wave generator () for driving one or more cryogenic refrigerator systems. The pressure wave generator () comprises a housing with one or more inlet/outlet ports () through which generated pressure waves of gas may pass through to drive a cryogenic refrigerator system or systems connected to the inlet/outlet ports (). The pressure waves are generated by at least one pair of opposed diaphragms () located in the housing that are moveable in a reciprocating motion within the housing to create pressure waves in gas spaces () associated with each diaphragm (). The gas spaces () each having associated inlet/outlet ports () through which the pressure waves may pass. An operable drive system is also provided to move the pair of diaphragms () in a reciprocating motion.

Cryogenic refrigerator system with pressure wave generator

A pressure wave generator () for driving one or more cryogenic refrigerator systems. The pressure wave generator () comprises a housing with one or more inlet/outlet ports () through which generated pressure waves of gas may pass through to drive a cryogenic refrigerator system or systems connected to the inlet/outlet ports (). The pressure waves are generated by at least on pair of opposed diaphragms () located in the housing that are moveable in a reciprocating motion within the housing to create pressure waves in gas spaces () associated with each diaphragm (). The gas spaces () each having associated inlet/outlet ports () through which the pressure waves may pass. An operable drive system is also provided to move the pair of diaphragms () in a reciprocating motion.

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Leeston, New Zealand

David Haywood