Dynamically counterbalanced pneumatically driven expander of a split Stirling cryogenic cooler

Alexander M. Veprik; Sergey V. Riabzev; Nachman Pundak

doi:10.1117/12.542069

30 August 2004 Dynamically counterbalanced pneumatically driven expander of a split Stirling cryogenic cooler

Alexander M. Veprik, Sergey V. Riabzev, Nachman Pundak

Proceedings Volume 5406, Infrared Technology and Applications XXX; (2004) https://doi.org/10.1117/12.542069
Event: Defense and Security, 2004, Orlando, Florida, United States

Abstract

Low vibration Stirling cryocoolers, which find use in numerous vibration sensitive electronic and electro-optic applications, typically comprise a dual-piston linear compressor and a pneumatically driven expander. While such compressors have inherently low level of vibration export, the unbalanced motion of the displacer-regenerator of the traditional expander inevitably leads to an essential vibration export into the supporting structure to which the cryogenic cooler is normally rigidly attached. The authors report on the novel approach to a passive cancellation of vibration export from a pneumatically driven displacer of a split Stirling cryogenic cooler. This patent pending technique relies on the principle of dynamic counterbalancing, where an auxiliary movable mass is flexibly attached to a hot part of the movable displacer-regenerator assembly and to the stationary expander casing using two auxiliary mechanical low-damped springs. A theoretical analysis yields the simple condition of canceling the fundamental component of vibration export at the same power consumption and cooling performance. The authors successfully attempted to redesign the existing expander of the Stirling Ricor model K535 cryocooler, where the vibration export at the driving frequency was reduced 150-fold under typical thermal loading at the same power consumption.

Citation Download Citation

Alexander M. Veprik, Sergey V. Riabzev, and Nachman Pundak "Dynamically counterbalanced pneumatically driven expander of a split Stirling cryogenic cooler", Proc. SPIE 5406, Infrared Technology and Applications XXX, (30 August 2004); https://doi.org/10.1117/12.542069

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available