Adjustable climate control auxiliary box for cooling a container, vessel, box or chamber

Abstract

An auxiliary box placed in an insulated chamber, vessel or container to produce a controlled temperature. The auxiliary box receives a coolant, such as dry ice (CO 2 ), and is constructed to allow controlled escape of the coolant into the chamber, vessel or container at a predetermined rate thereby controlling and maintaining the temperature ranges in the chamber, vessel or container to be cooled at a substantial constant temperature.

1 . An auxiliary cooling box for positioning in a product receiving space in an insulated container for maintaining said space at a constant selected low temperature, a quantity of dry ice CO 2  coolant in said cooling box, said cooling box including peripheral wall areas provided with different porosity characteristics to vary the flow of coolant into said product receiving space, and a closure for selective porosity areas in the peripheral wall of said cooling box to maintain a predetermined temperature in said product receiving space in said insulated container.  
   
   
       2 . The cooling box as claimed in  claim 1 , wherein said peripheral wall of the cooling box includes a removable to enable a selected quantity of dry ice to placed in the cooling box to maintain a selected low temperature in the product receiving space in the insulated container for a predetermined time period to facilitate use of the insulated container as a self-contained refrigerator.  
   
   
       3 . The cooling box as claimed in  claim 1 , wherein said closure for selective porosity areas includes imperforate panels positioned in closing relation to selective porosity areas.  
   
   
       4 . The cooling box as claimed in  claim 2 , wherein said removable lid on said cooling box includes a support for dry ice coolant for discharge of coolant downwardly into said cooling box to reduce temperature stratification in said cooling box.  
   
   
       5 . In combination with an insulated container having a product receiving space provided with a removable closure to provide access to said space, an auxiliary cooling box dimensioned to be placed in said space, a quantity of dry ice CO 2  coolant in said auxiliary box, said auxiliary box having a porous wall area for discharging gaseous coolant into said space at a selective rate to lower the temperature in said product receiving space to a constant selected temperature for a predetermined time interval.  
   
   
       6 . The combination as claimed in  claim 5 , wherein said porous wall area includes areas having selective porous characteristics that are selectively used to enable variation in the temperature in said product receiving space.