Spiral Freezers
• Cryogenic spiral freezers
• Mechanical spiral freezers
• Cryogenic spiral freezers convertible into mechanical spiral freezers

Freezing Tunnels
• Continuous in-line I.Q.F. freezing tunnel
• “Cryofood” cryogenic freezing tunnel with trays
• “Cryofood” mechanical freezing tunnel with trays
• Quick-freeze linear tunnels

Freezing Chambers
• Mechanical freezing chambers
• Cryogenic freezing chambers

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• Leavening
• Pasteurization
• Baking
• Protection
• New Production Lines

“Cryofood”™ Type Cryogenic Tunnel Freezer

MODEL CPC 58 MK2
Functional description of machine
This system is used to obtain the rapid freezing (deep-freezing) of products arranged on trays.
Machine operation is very simple.
A chain device allows trays to advance automatically, from the loading area onto a track that runs along the refrigerated box, and up to the product unloading area.

 

At the end of this track, trays are automatically brought back to the loading area.
The track runs along a closed circuit; this means that trays never leave the machine, so there is no need to move them manually.
The trays move along the following route:

• loading
• rapid freezing cycle
• unloading
return to loading area

all is done automatically and without the trays ever leaving the work cycle.
Tray loading and unloading operations may be performed either manually or by means of suitable automation fittings which are neither described nor included in this offer.
The advantage to be had from this tray-based machine is maximum flexibility when dealing with products with differing heights: you only need to change pitch (the chain is provided with modular tongues) to obtain a center distance between trays ranging from 100 mm to multiples thereof.
Thanks to its particular design, the machine is rather limited in size, considering its per hour production rate.
Two motor speed variators placed outside the refrigeration box transmit motion to the conveying mechanism, so product stay-time in the freezing box can be adjusted according to product freezing time requirements.
Cooling within the insulated box is obtained by spraying liquid nitrogen through an ad hoc sprinkling circuit.
Ventilation within the box is essential for efficient heat exchange between cryogenic gas and product. Heat exchange is assured by intense ventilation within the box, obtained thanks to axial-flow fans with motors installed outside the box. The operating temperature within the box may be varied up to -70°C.
Spent gas is sucked in by an exhauster by means of two hoods placed over the areas where trays enter and exit, and is subsequently piped into the customer-installed duct, so it can be exhausted out of the room.
Cleaning and defrosting at the end of the work cycle are easy to perform because the box is provided with a door which gives the operator full access to the inside of the machine.
The machine is manufactured in accordance with applicable regulations and is supplied with a certificate of conformity with European Directive EEC 89/392.