Our line of cryogenic cryocoolers offer quiet, non-wearing, oil-free, low-vibration, long-life cooling which is, as a recent customer said, "Better for the long run.”
Qdrive cryocooler models operate at temperatures ranging from 40–200K with rated capacities of a few Watts to over 1000 Watts at 80K. Our most popular models, the 2S102K and 2S132K, are readily available in single or OEM quantities. Their acoustic coldhead design, with no moving parts, make them compact and more adaptable for vibration sensitive applications such as radiation and infrared detectors, instrumentation cooling and small liquid cryogen dewars. The larger cryocooler models—2s226K, 2S241K, 2S297K, 2S362K— are ideally suited for high temperature superconductor (HTS) and liquefaction (LNG, LN2, LOX) applications. Detailed specifications, drawings and available options can be found by browsing the product links at the bottom of the page.
The base cryocooler unit consists of a PWG driven by patented STAR™ linear reciprocating motors and a thermoacoustic Stirling (pulse-tube) coldhead. The acoustic Stirling coldhead consists of a warm heat exchanger, a regenerator, a cold heat exchanger, a thermal buffer tube, a hot heat exchanger, an inertance tube, and an inertance tank. The figure below shows an inline cryocooler configuration for clarity, but the actual coldhead is “folded over” at the cold heat exchanger to create a cryocooler with an accessible, exposed cold zone.