Thales world-wide
Thales world-wide
Products > Stirling Coolers
Linear Stirling Coolers
Thales Cryogenics stirling cryocoolers are closed cycle coolers, that transfer an electrical input into usable cryogenic cooling power. The units are maintenance free, sealed-for-life and offer high reliability.
The range of linear split stirling coolers interfaces with most of the available infrared dewars. The cold fingers can also be used to support and cool various applications, other than infrared sensors. The split stirling configuration has many advantages in applications where electrical or mechanical noise from the compressor could interfere with sensitive cold electronics.
2 Flexure Bearing Cryocoolers Introduction

The cryogenic cooler is a sealed, Stirling-cycle device, with the compressor and cold finger constructed as separate components connected via a malleable metal transfer line. This "split" configuration provides maximum flexibility in system design and isolates the cooled object from the compressor-induced vibration or EMI

Linear Cryocoolers are available in a comprehensive range of versions to match virtually any dewar and will produce and sustain a detector operating temperature of typically 80 K at ambient temperatures up to +71°C. Lower or higher detector temperatures can be reached depending on the actual required cooling power and the permissible input power to the cooler.

Linear Stirling cryocoolers are available in two types:
  • Conventional Bearing cryocoolers. Allow for a lightweight and small design.
  • Flexure Bearing cryocoolers. Industrial applications require maintenance free lifetimes in the order of five years, and military applications require high lifetimes under severe conditons in order to reduce operational cost. Recognizing this trend, Thales Cryogenics has been one of the first companies to offer a solution that eliminates virtually all wear in the cryocooler, thus resulting in a unequaled range of full flexure supported cryocooler compressors for low cost prices.
Design Features
  • Dual opposed pistons driven by linear motors minimise compressor vibration and acoustic noise.
  • The cryogenic cooler has no rotating parts and no friction seals.
  • No maintenance is required, the coolers are sealed for life by laserwelding technologies.
  • The cooler contains no lubricants.
  • Cooling power and thus detector temperature is related to input power and can be easily controlled.
  • Available in different hermetically sealed slip-on and IDCA configurations.
Conventional Bearing Cryocoolers
  • Heatstop: The UP7080 and UP7086 series are standard equipped with a Heatstop® in the cold finger or transfer line. This Heatstop® reduces the heatflow from the compressor to the cold finger. This reduces the required heatsink capacity at the warm end of the cold finger.
Flexure Bearing Cryocoolers
  • Flexure-bearing suspension.
  • Moving magnet technology.
  • Wear is virtually zero.
  • 2nd Generation is 33% smaller and lighter.

The commonality concept applied in the compressor design allows for a common compressor design, which can be tuned to match different sizes of cold fingers.

Specifications

 
Conventional Bearing CryoCoolers   UP70XX Family InformationPDF Icon
  UP 7080 UP 7086 UP 7087 UP 7088 UP 70971 UP 70981
Parameter LS 5-5 LS 2-5 LS 5-7 LS 10-11 LS 5-7i1 LS 10-11i1
ø Coldfinger
Approx. Dewar Bore		 5 mm 5 mm 7 mm 10 mm 1/4 " 1/2 "
Dimensions Compressor
(ø x L)		 55x122 mm 44x120 mm 55x122 mm 55x122 mm 44x120 mm 55x122 mm
Cooling Power
@ 80 K; 23 °C		 700 mW 400 mW 800 mW 1450 mW 600 mW 1300 mW
Input Power 40 W 25 W 40 W 50 W 25 W 50 W
Cooldown Time 5 ' @ 250 J 5 ' @ 250 J 6 ' @ 550 J 6.5 ' @ 850 J 5 ' @ 250 J 13 ' @ 1440 J
MTTF > 4000 hour > 4000 hour > 4000 hour > 8000 hour > 4000 hour > 8000 hour
Mass 1550 g 1300 g 1700 g 1700 g 1300 g 1700 g
Operating Temperature -52 to +71 °C -52 to +71 °C -52 to +71 °C -52 to +71 °C -52 to +71 °C -52 to +71 °C
Suitable Drive Electronics UA 7072 UA 7072 UA 7072 UA 7072 UA 7072 UA 7072
1These are IDCA (Integrated Dewar Cooler Assembly) Cryocoolers.
 
1st Generation Flexure Bearing CryoCoolers
Parameter LSF 9180 LSF 9187 LSF 9188 LSF 9189 LSF 91971 LSF 91991 LSF 9320
ø Coldfinger
Approx. Dewar Bore		 5 mm 7 mm 10 mm 13 mm 1/4 " 1/2 " 20 mm
Dimensions Compressor
(ø x L)		 60x165 mm 60x165 mm 60x165 mm 60x165 mm 60x165 mm 60x165 mm 90x204 mm
Cooling Power
@ 80 K; 23 °C		 550 mW 650 mW 1600 mW 2800 mW 900 mW 1300 mW 5600 mW
Input Power 40 W 40 W 60 W 100 W 45 W 60 W 150 W
Cooldown Time 6 ' @ 250 J 8 ' @ 850 J 7 ' @ 850 J 5 ' @ 850 J 5 ' @ 250 J 13 ' @ 1440 J 10 ' @ 2150 J
MTTF > 20000 hour > 20000 hour > 20000 hour > 20000 hour > 20000 hour > 20000 hour > 20000 hour
Mass 2300 g 2300 g 2300 g 2400 g 2300 g 2400 g 6500 g
Operating Temperature -52 to +71 °C -52 to +71 °C -52 to +71 °C -52 to +71 °C -52 to +71 °C -52 to +71 °C -52 to +71 °C
Suitable Drive Electronics UA 7072 UA 7072 UA 7072 UA 7079 UA 7072 UA 7072
UA 7079		 UA 7070
1LSF 9197 and LSF 9199 are IDCA (Integrated Dewar Cooler Assembly) Cryocoolers.
 
2nd Generation Flexure Bearing CryoCoolers   LSF95XX Family InformationPDF Icon
Parameter LSF 9580 LSF 9587 LSF 9588 LSF 9589 LSF 95971 LSF 95991
ø Coldfinger
Approx. Dewar Bore		 5 mm 7 mm 10 mm 13 mm 1/4 " 1/2 "
Dimensions Compressor
(ø x L)		 60x122 mm 60x122 mm 60x122 mm 60x122 mm 60x122 mm 60x122 mm
Cooling Power
@ 80 K; 23 °C		 550 mW 650 mW 1600 mW 2800 mW 900 mW 1300 mW
Input Power 40 W 40 W 60 W 100 W 45 W 60 W
Cooldown Time 5 ' @ 250 J 6 ' @ 550 J 7 ' @ 850 J 5 ' @ 850 J 5 ' @ 250 J 13 ' @ 1440 J
MTTF > 20000 hour > 20000 hour > 20000 hour > 20000 hour > 20000 hour > 20000 hour
Mass 1700 g 1700 g 1700 g 1700 g 1600 g 1700 g
Operating Temperature -52 to +71 °C -52 to +71 °C -52 to +71 °C -52 to +71 °C -52 to +71 °C -52 to +71 °C
Suitable Drive Electronics UA 7072 UA 7072 UA 7072 UA 7079 UA 7072 UA 7072
UA 7079
Datasheet Available         PDF Icon PDF Icon
1LSF 9597 and LSF 9599 are IDCA (Integrated Dewar Cooler Assembly) Cryocoolers.