US2025277604A1PendingUtilityA1

Joule-thomson cryocooler

54
Assignee: SUMITOMO HEAVY INDUSTRIESPriority: Nov 25, 2022Filed: May 18, 2025Published: Sep 4, 2025
Est. expiryNov 25, 2042(~16.3 yrs left)· nominal 20-yr term from priority
Inventors:Taiki Ikeda
F25B 9/14F25B 9/10F25B 9/02
54
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

A Joule-Thomson cryocooler includes a pre-cooling cryocooler that includes a pre-cooling stage, a stage extension component that is attached to the pre-cooling stage and is cooled by the pre-cooling stage, and a refrigerant pipe that is mounted on the stage extension component to enable heat exchange with the stage extension component.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A Joule-Thomson cryocooler comprising:
 a pre-cooling cryocooler that comprises a pre-cooling stage;   a stage extension component that is attached to the pre-cooling stage and is cooled by the pre-cooling stage; and   a refrigerant pipe that is mounted on the stage extension component to enable heat exchange with the stage extension component.   
     
     
         2 . The Joule-Thomson cryocooler according to  claim 1 ,
 wherein the stage extension component is detachably attached to the pre-cooling stage.   
     
     
         3 . The Joule-Thomson cryocooler according to  claim 2 ,
 wherein the refrigerant pipe is not mounted on the pre-cooling stage.   
     
     
         4 . The Joule-Thomson cryocooler according to  claim 1 ,
 wherein the pre-cooling cryocooler comprises a cylinder extending from the pre-cooling stage, and   the cylinder is disposed inside the stage extension component.   
     
     
         5 . The Joule-Thomson cryocooler according to  claim 1 ,
 wherein the pre-cooling cryocooler comprises a cylinder extending from the pre-cooling stage, and   the stage extension component extends from the pre-cooling stage to a side opposite to the cylinder.   
     
     
         6 . The Joule-Thomson cryocooler according to  claim 1 ,
 wherein the pre-cooling cryocooler comprises a first pre-cooling stage and a second pre-cooling stage that is cooled to a lower temperature than the first pre-cooling stage, and   the stage extension component is attached to the first pre-cooling stage and is cooled by the first pre-cooling stage.   
     
     
         7 . The Joule-Thomson cryocooler according to  claim 6 ,
 wherein the stage extension component is detachably attached to the first pre-cooling stage.   
     
     
         8 . The Joule-Thomson cryocooler according to  claim 7 ,
 wherein the refrigerant pipe is not mounted on the first pre-cooling stage.   
     
     
         9 . The Joule-Thomson cryocooler according to  claim 6 ,
 wherein the pre-cooling cryocooler comprises a cylinder that connects the second pre-cooling stage to the first pre-cooling stage, and   the cylinder is disposed inside the stage extension component.   
     
     
         10 . The Joule-Thomson cryocooler according to  claim 6 ,
 wherein the stage extension component is not in physical contact with the second pre-cooling stage.

Join the waitlist — get patent alerts

Track US2025277604A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.