New rotary valves for pulse-tube refrigerators

M.E. Will, I. Tanaeva, R. Li, A.T.A.M. Waele, de

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    Abstract

    In most used rotary valves in GM-type pulse-tube refrigerators the rotor makes heavy mechanical contact with the stator, so the valve is liable to wear, and large torques are needed. In this paper we will describe two types of valves, which have balanced forces on the rotor. In the first valve the rotor and the stator make no mechanical contact. The second type is a contact valve, like the classical valves, but the forces on the rotor are balanced in a different way. Therefore, these valves are less liable to wear, and the torques needed to rotate the valves are small
    Original languageEnglish
    Pages (from-to)793-800
    JournalCryogenics
    Volume44
    Issue number11
    DOIs
    Publication statusPublished - 2004

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