INTEGRAL LINEAR STIRLING COOLER – SLI270

mini linear stirling cryocooler SLI270

preformance of miniature linear stirling cooler SLI270
Electrical power consumption for different heat loads on cold finger at 77K and 23°C ambient.

electronics driver for linear motor for linear Stirling cryogenic cooler
Electronics driver for linear motor

SLI270 (2W@80K)

Description:

The SLI270 cooler is intended to cool HTS systems (High Temperature Superconductor systems) and also the Infrared detectors, but can be used for cryo-cooling in other applications.

Le-tehnika’s Integral Linear Stirling cryocooler model SLI270 was developed to cool the cryogenic systems which need higher cooling power or working on lower temperatures than 77K. It has a long life time (MTTF) and a good efficiency and low acoustic noise. This model is a member of a new more reliable family of Linear driven Stirling cooler with main improvements on compressor and expander side developed during KLARA project.

The operation of the Stirling compressor driven via moving magnet motor is smooth and silent with low acoustic noise. Motor windings are outside of the working gas to prevent its contamination and prolong the lifetime and reliability of the cooler.

Small digital electronic driver with an on board temperature controller is also fully programmable via RS232 port for a customer mission profile. Over-current protection, protection against reverse polarity, standby mode and remote shutdown are available. The electronic board is outside the cooler in separate box..

PERFORMANCE SPECIFICATIONS:
(for an ambient temperature of 23 °C )

Input Voltage: …….………………………………………. 18 – 28 VDC (24VDC Nominal)

Typ. Steady State Input Power: …….……………. (1,5W @77K @ 23°C): < 50W Typ.

Motor Efficiency (optimal configuration):………….. 80%

Cooldown time to 80K (650J): …….……………… < TBD min

Maximum Input Power Required: …….……….. 80 W (during cool down)

Operating Ambient Temperature Range: …….- 40 °C to + 71 °C

Weight: …….………….………….……………………….. < 1600g

MTBF: …….………….………….…………………………… > 50.000h (Goal)

Meets Environmental Conditions per MIL-STD-810D

Optional cold finger designs are possible upon request.

*Specifications for this product are subject to change without notice