Heavy-Duty, Tough for 300 – 5,000 lbs. Objects

Cryogenic Freezers – Liquid Nitrogen Cooled Freezers The CB Series

Russells CB series cryogenic freezers are capable of achieving temperatures of -300º F to +185º 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. Applications include:
- cryo steel treating
- shrink fit applications
- heavy duty industrial (bevel gears, castings)
- general industrial
- explosion-proof
- military and government
- communications
- automated/integrated applications
If a standard cryogenic freezer design doesn’t fit your requirements, Russells engineers will work with you to custom design a freezer to meet your exact needs maximizing throughput.

Notes:

Cooling capacity is based on using vaporized liquid nitrogen and forced air convection for rapid cooling.
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 + 24°C).
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.

Continuous TIG welded type 304 stainless steel liner is vapor tight. Standard freezer floors are capable of supporting 300 PSF or higher static load
Insulation is high density foam
Liquid nitrogen vents
Freezer workspace drain plumbed to exterior FPT coupling.
Welded structural frame with removable service access panels
Base of freezer is designed for fork-lift handling in most cases
Air/Hydraulic lid with a built-in safety system
Special gaskets to withstand -300ºF (-185ºC)
Heated mullion to eliminate frosting around the lid perimeter
Durable blue enamel finish (custom colors available)

Customer supplied liquid nitrogen vaporized through stainless steel spray manifold and nozzles.
Manifold located in the fan/blower wheel conditioning plenum, LN2 is NOT sprayed directly on the product/parts.
Low pressure supply is controlled by cryogenic solenoid(s); low pressure supply provides most efficient use of liquid nitrogen.
Air circulation by propeller type fan(s), or heavy duty reverse inclined aluminum blower wheel(s), both types with externally mounted circulator motor(s).
Low temperature fail safe limit.

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