Reciprocating rapid cooldown loop for cryogenic devices

The reciprocating rapid cooldown loop addresses the inefficiencies of conventional cryogenic systems by enhancing thermal communication and leveraging higher temperature stages to accelerate cooldown, achieving faster and more efficient temperature reduction.

WO2026117601A1PCT designated stage Publication Date: 2026-06-04MAYBELL QUANTUM IND INC
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
MAYBELL QUANTUM IND INC
Filing Date
2025-11-25
Publication Date
2026-06-04

AI Technical Summary

Technical Problem

Conventional cryogenic systems suffer from long cooldown times, especially when achieving ultra-low temperatures, due to low cooling power and inefficient thermal communication between stages, often requiring costly and unreliable components.

Method used

A reciprocating rapid cooldown loop that selectively transfers fluid between different temperature stages within a cryogenic system, using a controlled cyclical pumping mechanism to enhance thermal communication and leverage the cooling power of higher temperature stages to accelerate cooldown.

Benefits of technology

Substantially reduces cooldown times and enhances cooling efficiency, eliminates the need for expensive components, and provides greater operational flexibility and scalability, while maintaining cost-effectiveness.

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Abstract

Cryogenic systems that provide stronger heat transfer between thermalization stages in cryogenic stages compared to conventional systems. The stronger heat transfer can reduce the cooldown time of the cryogenic systems herein compared to conventional systems. The cryogenic systems may include a reciprocating rapid cooldown loop configured to exchange volumes of fluid between different cryogenic stages of the system. The exchanged fluid may be configured to exchange heat between these different stages of the system. This heat exchange allows the lower temperature stages of cryogenic systems to perform initial cooling using the more powerful coolers of the higher temperature stages of the systems. The reciprocating cooldown loop may selectively transfer fluid between a pulse tube cryocooler and other colder stages of the cryogenic system, allowing the powerful pulse tube cryocooler to assist the colder stages of the system, reducing the time required for the initial cooldown of the system.
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