English to Italian Tech/Engineering Patents freezer apparatus

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The open mesh form of conveyor belt 20 provides for the movement of the impingement jets 36, 38 to pass through the conveyor belt.
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If liquid nitrogen is used as the cryogen, the impingement jets 36, 38 will take the form of cryogen sprays, while using CO2 as the cryogen will provide for a solid phase CO2 in the impingement jets for contacting the products 22.
Use of the liquid nitrogen can bring a temperature of the space 14 down to minus 250°F [= minus 156°C], while use of CO2 in the space can bring the temperature of the space down to minus 90°F [= minus 68°C].

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