Top mount refrigerator airflow system

1. A refrigeration system comprising:

a first cooling compartment having a first cooling cavity area;

a second cooling compartment having a second cooling cavity area, wherein the first cooling compartment is positioned above the second cooling compartment, and the first cooling cavity area is maintained at a lower temperature than the second cooling cavity area;

an evaporator assembly comprising an evaporator and a fan, the evaporator assembly operatively positioned in the first cooling compartment and configured such that a cooled air stream generated by the fan is provided into the first cooling cavity area and circulated therein;

at least one air outlet formed between the first cooling cavity area and the second cooling cavity area, the air outlet configured to permit at least a portion of the cooled air stream generated by the fan of the evaporator assembly and circulated in the first cooling cavity area to flow directly from the first cooling cavity area into the second cooling cavity area through the air outlet; and

at least one air return formed between the evaporator assembly and the second cooling cavity area, the air return configured such that air from the second cooling cavity area flows into the evaporator assembly through the air return,

wherein the first cooling compartment is a freezer compartment, the first cooling cavity area is a freezing cavity area, the second cooling compartment is a fresh food compartment, the second cooling cavity area is a fresh food cavity area, and the evaporator assembly is positioned in the freezing cavity area of the freezer compartment.

2. The refrigeration system of claim 1 , wherein the portion of the cooled air stream generated by the fan of the evaporator assembly and circulated in the first cooling cavity area flows into the second cooling cavity area through the air outlet due to a pressure differential between the first cooling cavity area and the second cooling cavity area.

3. The refrigeration system of claim 1 , wherein the air return comprises a Venturi pipe.

4. The refrigeration system of claim 1 , further comprising at least another air return formed between the evaporator assembly and the second cooling cavity area, the other air return also configured such that air from the second cooling cavity area flows into the evaporator assembly.

5. The refrigeration system of claim 4 , wherein the one air return is positioned below one side of the evaporator of the evaporator assembly and the other air return is positioned below another side of the evaporator of the evaporator assembly.

6. The refrigeration system of claim 1 , wherein the evaporator assembly further comprises an evaporator cover configured to permit at least a portion of the air stream generated by the fan and circulated in the first cooling cavity area to re-enter the evaporator assembly.

7. The refrigeration system of claim 1 , further comprising an air deflector mounted entirely within the first cooling compartment proximate to the air outlet and configured to deflect at least a portion of the air stream generated by the fan and circulated in the first cooling cavity area towards the air outlet.

8. A top mount refrigerator appliance comprising:

a freezer compartment having a freezer cavity area;

a fresh food compartment having a fresh food cavity area;

an evaporator assembly comprising an evaporator and a fan, the evaporator assembly operatively positioned in the freezing cavity area of the freezer compartment and configured such that a cooled air stream generated by the fan is provided into the freezer cavity area and circulated therein;

at least one air outlet formed between the freezer cavity area and the fresh food cavity area, the air outlet configured to permit at least a portion of the cooled air stream generated by the fan of the evaporator assembly and circulated in the freezer cavity area to flow directly from the freezer cavity area into the fresh food cavity area through the air outlet; and

at least one air return formed between the evaporator assembly and the fresh food cavity area, the air return configured such that air from the fresh food cavity area flows into the evaporator assembly through the air return.

9. The top mount refrigerator appliance of claim 8 , wherein the portion of the cooled air stream generated by the fan of the evaporator assembly and circulated in the freezer cavity area flows into the fresh food cavity area through the air outlet due to a pressure differential between the freezer cavity area and the fresh food cavity area.

10. The top mount refrigerator appliance of claim 8 , wherein the air return comprises a Venturi pipe.

11. The top mount refrigerator appliance of claim 8 , further comprising at least another air return formed between the evaporator assembly and the fresh food cavity area, the other air return also configured such that air from the fresh food cavity area flows into the evaporator assembly.

12. The top mount refrigerator appliance of claim 11 , wherein the one air return is positioned below one side of the evaporator of the evaporator assembly and the other air return is positioned below another side of the evaporator of the evaporator assembly.

13. The top mount refrigerator appliance of claim 8 , wherein the evaporator assembly further comprises an evaporator cover configured to permit at least a portion of the air stream generated by the fan and circulated in the freezer cavity area to re-enter the evaporator assembly.

14. The top mount refrigerator appliance of claim 8 , further comprising an air deflector mounted entirely within the freezer compartment proximate to the air outlet and configured to deflect at least a portion of the air stream generated by the fan and circulated in the freezer cavity area towards the air outlet.