For applications where efficiency and weight are key design parameters, Thales Cryogenics
offers a range of rotary stirling coolers.
Thales Cryogenics has developed a wide range of
Stirling coolers with rotary driven oscillators. These coolers are able to
cool down between 60 and 150 K and are well adapted for low mass applications
(portable applications) or applications with high environmental stresses
(on board applications, missile).
Introduction
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 high efficiency makes the rotary cooler especially suitable for battery operated systems.
Mechanical arrangement
Split version:
Compressor and cold finger are separate components linked by a split pipe. This arrangement provides maximum flexibility for system design and integration. The split pipe can be preformed to suit customer requirements.
Integral version:
The compressor and cold finger are part of the same body. This provides a high efficiency and allows smaller dimensions, lower weight and lower input power.
- Integrated dewar / cooler assembly (IDCA). The dewar bore is used as the external envelope of the cold finger. The displacer runs directly in the dewar bore. This allows higher efficiency as there is no need for a thermal link between cold finger and dewar. We are able to provide the dewar bore upon request of the customer.
- Slip-on. The cold finger has its own external envelope. It is integrated in the dewar bore with a thermal link which is also provided if necessary.
- Cold temperature : 60 to 150K
- Cooling power : 0.25 to 2W
- DC brushless motors
- Lubricant free
- High resistance to mechanical and thermal environment
- MTTF of over 9000 operating hours
- Clearance seal concept (no wearing seals), hard coatings
- Low cost
Specifications
* The RM3 Stirling Rotary Cooler is currently under development.
1 Total cooling power = Cooling power available on the tip of dewar cold finger + dewar losses for considered cold temperature.
| Parameter | RS5-5 Split Stirling |
|---|---|
| Cooling Power @ 80K and 20 °C |
700 mW |
| Input Power | 50 W |
| Mass (excluding dewar) |
900 g |
| ø Cold Finger | 4,9 mm |
| Dimensions Compressor (ø x L) |
44,4x105 mm |
| Parameter | RM2-7i integral IDCA | RM3 integral IDCA* | RM4 integral IDCA | RM5-7i integral IDCA |
|---|---|---|---|---|
| ø Coldfinger Approx. Dewar Bore |
1/4 " | 8 mm | 1/4 " | 1/4 " |
| Dimensions | 46.5 x 82 x 95.5 mm | 55.8 x 71 x 98.5 mm | 55.8 x 78.8 x 98.5 mm | |
| Cooling Power 1 @ 77 K; 20 °C |
400 mW | 700 mW | 730 mW | 730 mW |
| Max.Input Power | 9.5 W | 17 W | 20 W | 24 W |
| Steady State Phase @ 77 K; 20 °C |
<5 W | <7 W | <5.3 W | <6 W |
| Cooldown Time | 7 ' @ 150 J | 7 ' @ 250 J | 5 ' @ 250 J | 5.5 ' @ 250 J |
| MTTF | > 10000 hour | > 9000 hour | > 9000 hour | > 8000 hour |
| Mass | 275 g | 420 g | 420 g | |
| Acoustic Noise | <51 dBA | <51 dBA | <51 dBA | <51 dBA |
| Operating Temperature | -40 to +70 °C | -46 to +85 °C | ||
| Suitable Drive Electronics | DE 0001 | DE 0002 | DE 0002 | |
| Datasheet Available |  |
|
|
|
1 Total cooling power = Cooling power available on the tip of dewar cold finger + dewar losses for considered cold temperature.
