CRYOGENIC COOLERS YOUR PARTNER IN CRYOGENICS Le-Tehnika d.o.o. Šuceva 27 SI - 4000 Kranj Slovenia, Europe Tel.: +386 4 20 20 200 Fax: +386 4 204 21 22 www.le-tehnika.com
Feb 25, 2016
CRYOGENIC COOLERS
YOUR PARTNER IN CRYOGENICS
Le-Tehnika d.o.o.Šuceva 27
SI - 4000 KranjSlovenia, Europe
Tel.: +386 4 20 20 200Fax: +386 4 204 21 22 www.le-tehnika.com
CRYOGENIC COOLERS
Le-tehnika – basic data
- Established in 1989- 3 main divisions:
– Telephony since 1989– Hydraulics&Pneumatics since 1995– Cryogenics since 2000
- A doughter company Sinoslo Technology (SIP) Ltd. established in year 2003 in China
CRYOGENIC COOLERS
WORLDWIDE LOCATIONS
Le-tehnika d.o.o. Kranj
Slovenia
Headquarters, production, distribution,
92 employee,2 retail shops
Le-tehnika d.o.o.Croatia
Distribution, 3 employees
Syndeo, d.o.o. Bosnia
Distribution, 1 employees
Sinoslo Technology (SIP) Ltd.
Suzhou, China
Production, distribution, 90 employees
CRYOGENIC COOLERS
ORGANISATION
CRYOGENIC COOLERS
Organization – Main divisions
Telefony
Cryogenics
Hidraulics & Pneumatics
CRYOGENIC COOLERS
ISO in Le-tehnika – accomplished STANDARDS
• Standards- ISO 9001:2008- ISO 14001:2004
(environmental)
CRYOGENIC COOLERS
0
1.000.000
2.000.000
3.000.000
4.000.000
5.000.000
6.000.000
7.000.000
2002 2003 2004 2005 2006 2007 2008 2009 2010
Turnover By Division (€)
Telephony Hydraulics Cryogenics Distribution
CRYOGENIC COOLERS
CRYOGENIC PROGRAM
Specific advantages of Le-tehnika:
Le-tehnika is specialized in development and production of cryogenic coolers systems of different configurations and performances and its accessories. They are generally intended for IR detector’s cooling used in IR cameras or missiles with an IR head for defense industry, police, security and in other applications.
- Flexible production (quick delivery of samples or small quantities)
- R&D team (customized solutions for each customer)
- Competitive prices- Quality
CRYOGENIC COOLERS
CRYOGENIC DEPARTMENT’S EQUIPMENT
• High purity air, N2 and Argon installation with pressures up to 700 bar
•Climatic Chambers for environmental testing
• Measuring stands for JT coolers performance measurements
• Clean room class ISO7
• Filling stations for Stirling cycle devices
• Sarix EDM machine for production of small parts
• Multiple turning machinesHYDRAULIC DEPARTMENT has its own workshop, which we are using for production of bigger parts.
CRYOGENIC COOLERS
Some fractals from our productioon
Clean room class ISO7Stirling Coolers assemby
Assembly working stand for JT coolers
Nozzle drilling and other preccision milling operations
Cleaning and purging room
CRYOGENIC COOLERS
JOULE THOMSON MINICOOLERSCapabilities:- Design and construction of coolers. - Heat exchangers calculation and manufacturing.- Different types of orifice designs, dimensioning and construction of orifice in
accordance with required cooler consumption.- Technology of bellow type self regulating mechanism.- Technology of other types of self regulating mechanism (bimetal,etc.).- Technology of Active Controlled type JT cooler.- Technology of Dual flow JT coolers- Production of JT coolers.- Testing and measuring of JT cooler performances for pressures up to 700bar at
different ambient temperatures- Typical outer diameters: 5.18mm, 7.22mm, 10.3mm, 11.17mm- Design proving, qualification testing etc.
CRYOGENIC COOLERS
JOULE THOMSON MINICOOLERSBY SHAPE
- Cylindrical
- Conical
- Combined (cylindrical, conical)
CRYOGENIC COOLERS
JOULE THOMSON MINICOOLERSBY TYPE OF CONSTRUCTION
* Fixed orifice
* Actively controlled (regulated)
* Fast cool down
* Self – regulated* Multilayer
CRYOGENIC COOLERS
CRYOGENIC COOLERS
JOULE THOMSON MINICOOLERSACTIVELY CONTROLLED COOLER - ACC
Advantages: - more reliable, - less influenced by gas impurities, - more stable operation, - operating temperature is not fixed with the gas used and could be set as needed.
Used for cooling of IR head on IRIS-T rocket.
CRYOGENIC COOLERS
ACCESSORIES- High pressure gas containers (bottles)- Quick release valves (TBD)- High pressure gas cleansers- Pure Air Monitors (PAM)- Test dewars
JOULE THOMSON MINICOOLERSACCESSORIES
CRYOGENIC COOLERS
CRYOCOOLERS BASED ON STIRLING CYCLECapabilities: - Design of Stirling coolers for different cooling power
requirements.- Regenerators calculation and manufacturing.- Production of Stirling coolers.- Testing and measuring of Stirling cooler performances.
Types of Stirling coolers:- Split Stirling cryocooler with rotary drive (0.5W at 80K of
cooling power)- Integral Stirling cryocooler with rotary drive (up to 3/4W of
cooling power)
CRYOGENIC COOLERS
- Cooling power around 500mW at 80K- Power consumption app. 35 W- Temp. range: -40°C to +70°C - Different forms and lengths of cold finger available on request
CRYOCOOLERS BASED ON STIRLING CYCLESPLIT WITH ROTARY DRIVE
CRYOGENIC COOLERS
CRYOCOOLERS BASED ON STIRLING CYCLEINTEGRAL WITH ROTARY DRIVE
Input Voltage: ……………………………………… 21-28 VDCTyp. Steady State Input Power ………….. ….. (200mW @80K @ 23°C): 8W Typ.Cooldown time to 80K (200J) ...................... < 5 minMaximum Input Power Required ................ 17 W (during cooldown )Operating Ambient Temperature Range .... - 40 C to + 71 CWeight ........................................................ < 470grMTBF ............................................................ > 10000h (Expected)
Cooling power for different cold end temperatures at 23 °C ambient
500
600
700
800
900
1000
1100
1200
70 80 90 100 110 120 130
Cold end temperature [K]
Cool
ing
pow
er [m
W]
CRYOGENIC COOLERS
DEVELOPMENT OF INTEGRAL STIRLING COOLER with ROTARY DRIVEROADMAP – generation 2
Target specifications:• Cooler Weight: <500 gr.• Input Voltage: 18-24 VDC• Max.Cooling power: > 500mW @80 K• Steady State Input Power (200mW @80K and 23°C): 8 W Typ.• Maximum Input Power: 17 W• Cooldown Time (200J @23°C): < 5 min Typ.• Ambient Temperature Range:
- Operational: -40°C...+71°C- Non-Operational: -56°C...+85°C
• Meets Environmental Conditions per MIL-STD-810D • MTTF > 5,000 Hours
Time frame
Jan.2011Design verifications with Environmental tests
April 2011Start of Life time testing
Jun 2011 Industrialization
CRYOGENIC COOLERS
DEVELOPMENT OF SMALL INTEGRAL STIRLING COOLER with ROTARY DRIVE
ROADMAP – generation 3Target specifications
• Cooler Weight: < 250 gr.• Input Voltage: 12VDC• Steady State Input Power
(150mW @110K @23°C): 3W Typ.• Maximum Input Power: 15W• Cooldown Time (150J @23°C):
5 Minutes Typ.• Ambient Temperature Range:
- Operational: -40°C...+71°C- Non-Operational: -56°C...+85°C
• Meets Environmental Conditions per MIL-STD-810D
• MTTF > 10,000 Hours
Time frame
Mar. 2011 Design development start (shape, materials, el. motors,…)
Aug. 2011 Models, preliminary tests
Dec. 2011 Design verifications with Environmental tests
Jun 2012 Industrialization
CRYOGENIC COOLERS
AVAILABLE TECHNOLOGIES & POTENTIAL TECHNOLOGIES
ON SHORT TERM SCALE
- PAM (PS or PR versions)Capacity: 10 units/month at the momentSamples available in 8 weeks
- Self regulated JT cryocoolers or actively controlled JT coolersCapacity: 80 -100 units per month. First samples available in few months.For special flange request some development time needed.
CRYOGENIC COOLERS
- Self regulated JT cryocoolers with special regulating demands.The development is needed and first samples available app. 6 months after start of the project.Production in agreement with customer.
- High pressure fast cooldown JT cryocoolers (special demands).- Quick release valves, depend on quantities.
- Split Stirling cryocooler 0.5WSerial production available in 2011
- Integral 0.5W Stirling cryocooler Serial production available in 2011.
- Linear stirling and Pulse tube closed cycle cooler.. Further development needed.
AVAILABLE TECHNOLOGIES & POTENTIAL TECHNOLOGIES
ON LONG TERM SCALE
CRYOGENIC COOLERS
More details about our
company and products on
www.le-tehnika.com
CRYOGENIC COOLERS
Thank you for your attention!
You are kindly invited to visit us in Slovenia!