Cryogenic Freezers - Liquid Nitrogen Cooled Freezers

The CB Series from Russells Technical Products

Russells CB series cryogenic freezers are capable of achieving temperatures of -300º F to +125º F. To be able to withstand this extreme temperature difference, Russells has incorporated special construction techniques in addition to welded structural steel framing and heavy duty welded stainless steel liners. As with all Russells cryogenic freezers, we are continuously striving to provide you, our customers, with the best ultra cold freezers available. Since 1972, our freezers been used in liquid nitrogen cryogenic freezing applications around the globe, adding continually to a cryogenic knowledge base that is second to none.

We offer a complete range of cryogenic freezers found in the table below to reliably preserve your samples. A Russells application engineer can assist you in selecting the freezer configuration and size that's best for you or we can custom design any standard freezer configurations.

1080 cu/ft cryogenic freezer for testing satellite antennas

Notes:

1. Cooling capacity is based on using vaporized liquid nitrogen and forced air convection for rapid cooling.
2. Prechilled cryogenic freezers have sufficient cooling capacity to return the air temp to -300°F in the stated times with the steel loads shown (load at +75°F).
3. The production capacity of the freezer may vary with the size, shape, load geometry, and temperature of the load when entering the freezer. Varying ambient temperatures may also affect the capacity.

Printable Spec Sheet- Cryogenic Freezers 

Applications 

• Cryogenic Treatment of Steel Components
• Tissue Preservation
• Cancer Research: Tumor Cell Preservation            
• Blood or Bone Marrow Preservation            
• Bacteria Research / Virus Preservation            
• Sperm and Fertilized Ovum             
• Pollen and Plant Cell Preservation            
• Monoclonal Antibody Preservation 
• Environmental Experiments 
• Superconductivity Research            
• Electronics Experimentation  

Standard Nitrogen Freezer Features

Cabinet

• Continuous TIG welded type 304 stainless steel liner is vapor tight. Standard freezer floors are capable of supporting 300 PSF uniform static load
• Insulation
• Liquid nitrogen vents
• Freezer Drain
• Welded structural frame with removable service access
  panels
• Steel tube base for fork lift handling
• Air lift lid (all models) with pneumatic safety system
• Special gaskets to withstand -300º F
• Special heated mullion to eliminate frosting
• Durable blue enamel finish (custom colors available)

Cooling

• Customer supplied liquid nitrogen vaporized through stainless steel spray manifold and nozzles
• Manifold located in fan plenum, LN2 is not sprayed directly on parts
• Low pressure supply (20psi) is controlled by cryogenic solenoid
• Low pressure supply provides most efficient use of liquid nitrogen
• Redundant safety solenoid valve
• Air circulation by propeller type fans with externally mounted motors
• Low temperature fail safe limit

Electrical

• All wiring meets N.E.C. Standards
• System branch circuits individually fused
• 115 volt control circuits
• System function switches and indicating lights
• System fault
• All wiring color coded and labeled
• High temperature fail safe limit

Controls

• Temperature control provided by 945 microprocessor based controller

Optional Accessories:

• Electric heat to + 125 º F
• Recorders
• Cycle timer
• Cycle timer with beacon
• Seven day timer
• Access ports
• Running time meter
• Electric defrost
• Compressed air conditioning unit
• Main power disconnect
• Electrical enclosure with primary power interlock
• Casters
• Conveyor systems
• Industrial electrical and control system

Request-A-Quote - Cryogenic Freezers