Features of
Cryorefrigerators:
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- Pulse Tube and Gifford-McMahon Cryorefrigerators
- Single and Two Stage Cryorefrigerators
- Can be used with any electrical supply
- Our cryorefrigerators are used in many places on the planet
- Water or Air cooled options available
- Different sized products to fit your cooling capacity needs
- Multiple electrical configurations to choose from
- Long mean time between maintenance intervals
Cryorefrigerators
|Cryomech manufactures both Pulse Tube and Gifford-McMahon Cycle Cryorefrigerators. At this time all of our products are base on the Gifford-McMahon Principle of separate compressor package and cold head (expander). The compressor package supplies the compressed Helium for the Cold Head inside of which the helium expands to create cryogenic temperatures. These (2) components are connected with flexible lines and a motor cord to complete the cryorefrigerator (cryocooler) system. The cryocooler includes everything necessary to be turned on and cool. Vacuum chambers thermometry, etc. are options that must be added for a complete cryogenic application.
Cryomech attempts to define each cryocooler with standard set of (4) documents. Cryocoolers are defined by the cooling capacity (watts) at temperature (Kelvin). If for example you need 40 watts @ 50K you might choose the AL60. This information can be found on the capacity curve of the cryocooler. The important dimensions for the interface of the power to cryocool with the device you wish to cool are on the Cold Head outline drawing. We include a system drawing to show the complete system. The specification sheet gives the requirements necessary to operate the cryocooler. This includes the electrical configurations, electrical consumption, water cooling necessary, ambient temperature, weight, dimensions etc.
William E. Gifford the founder of Cryomech invented both the Gifford McMahon Cryorefrigerator and the Pulse Tube Cryorefrigerator. We manufacture Single and Two Stage in both cycles. At the present time our 4K Pulse Tubes (2 stage) have become standard components for many suppliers of NMRs, dilution refrigerators, and laboratory cryostats. The PTRs offer several beneficial characteristics over GMs. Because they have no displacers they have lower system vibrations, longer mean time between maintenance, and higher system reliability. The 8K PTRs are 2 stages and have replaced our 2 stage 10K GMs. Cryomech's single stage GMs are unmatched in performance down to, and below, 20K. The Single stage PTRs, while not being as efficient (watts @ temperature/watts of input power) as the GMs, they have all the beneficial PTR characteristics.