Flow controlling assembly and method

1. A flow controlling assembly configured to permit air flow between a first chamber and a second chamber, the flow controlling assembly comprising:

a frame member including a damper contacting surface at least partially surrounding a frame opening configured to permit the air flow therethrough, and a bottom wall of the frame opening, the damper contacting surface being disposed at an interior angle of less than 90 degrees but greater than zero degrees relative to the bottom wall of the frame opening; and

a damper plate including a frame contacting surface, the frame contacting surface being configured to contact the damper contacting surface when the damper plate is in a closed position,

wherein one of the frame member and the damper plate has at least one void, and the other of the frame member and the damper plate has at least one protrusion received in the at least one void, the at least one void and the at least one protrusion being disposed above the frame opening;

wherein the damper plate is configured to rotate about a rotational axis which translates relative to the frame when there is a predetermined positive air pressure difference between the first chamber and the second chamber.

2. The flow controlling assembly according to claim 1 , wherein the at least one protrusion comprises a plurality of protrusions and the at least one void comprises a plurality of voids.

3. The flow controlling assembly according to claim 2 , wherein at least one of the plurality of protrusions comprises a stop member configured to impede removal of the damper plate from the frame member.

4. The flow controlling assembly according to claim 2 , wherein the plurality of protrusions is on the frame member, and the plurality of voids is on the damper plate.

5. The flow controlling assembly according to claim 4 , wherein at least one of the protrusions comprises a stop member having a predetermined length extending in a predetermined direction, where the stop member predetermined length is at least equal to a predetermined length in the predetermined direction of the corresponding void.

6. The flow controlling assembly according to claim 1 , wherein the damper plate has a predetermined length extending in a predetermined direction, where the damper plate predetermined length is at least equal to a predetermined length in the predetermined direction of the frame opening.

7. The flow controlling assembly according to claim 1 , wherein the damper plate extends beyond the damper contacting surface in at least one direction when the damper plate is in the closed position.

8. The flow controlling assembly according to claim 1 , wherein the frame member further includes a top wall of the frame opening, the protrusion extending up and away from the top wall.

9. The flow controlling assembly according to claim 8 , further comprising a frame mounting surface, both the top wall and the bottom wall extending outward from the frame mounting surface, the bottom wall extending further away from the frame mounting surface than the top wall does.

10. A refrigerator comprising:

a first storage compartment and a second storage compartment; and

a damper assembly configured to permit air flow from the first storage compartment to the second storage compartments, the damper assembly comprising:

a frame member including a damper contacting surface at least partially surrounding a frame opening configured to permit the air flow therethrough; and

a damper plate including a frame contacting surface, the frame contacting surface being configured to contact the damper contacting surface when the damper plate is in a closed position,

wherein one of the frame member and the damper plate has at least one void, and the other of the frame member and the damper plate has at least one protrusion received in the at least one void, the at least one void and the at least one protrusion being disposed above the frame opening, wherein the damper plate is configured to rotate about a rotational axis which translates relative to the frame member from the closed position to a partial open position only when there is a predetermined positive air pressure difference between the first chamber and the second chamber.

11. The refrigerator according to claim 10 , further comprising a positive pressure generating device disposed within the first storage compartment.

12. The refrigerator according to claim 11 , wherein the damper plate extends beyond the damper contacting surface in at least one direction when the damper plate is in the closed position to thereby prevent air flow from the second storage compartment to the first storage compartment.

13. The refrigerator according to claim 12 , wherein at least a portion of the damper contacting surface is disposed at an angle greater than zero degrees and less than ninety degrees relative to a surface on which the refrigerator is disposed.

14. The refrigerator according to claim 10 , wherein the at least one protrusion comprises a plurality of protrusions and the at least one void comprises a plurality of voids.

15. The refrigerator according to claim 14 , wherein the plurality of protrusions is on the frame member, and the plurality of voids is on the damper plate.

16. The refrigerator according to claim 14 , wherein at least one of the protrusions comprises a stop member having a predetermined length extending in a predetermined direction, where the stop member predetermined length is at least equal to a predetermined length in the predetermined direction of the corresponding void.

17. The refrigerator according to claim 10 , wherein the damper plate rotates about the rotational axis or translates relative to the frame member to a full open position when there is a second predetermined positive air pressure difference between the first storage compartment and the second storage compartment, the second predetermined positive air pressure difference being greater than the first predetermined positive air pressure difference.

18. The refrigerator according to claim 10 , wherein the damper plate rotates about the rotational axis and translates relative to the frame member to a full open position when there is a second predetermined positive air pressure difference between the first storage compartment and the second storage compartment, the second predetermined positive air pressure difference being greater than the first predetermined positive air pressure difference.

19. A flow controlling assembly for controlling a fluid flow from a first chamber to a second chamber, comprising:

a frame member having an opening between the first chamber and the second chamber for the fluid flow;

a damper plate rotatably and translatively supported by the frame member, the damper plate rotating and translating relative to the frame member among a first position, a second position, and a third position, in the first position the damper plate resting on the frame opening to impede the fluid flow, in the second position the damper plate rotating and translating from the first position to partially open the opening, in the third position the damper plate rotating and translating farther from the first position to fully open the opening;

at least one protrusion on one of the frame member and the damper plate; and

the other of the frame member and the damper plate including a corresponding void, the at least one protrusion being configured to be received in the corresponding void, the at least one protrusion and the corresponding void being disposed above the opening between the first chamber and the second chamber.