Spring loaded mullion for french door refrigerator

Patent metadata

Field	Value
Publication number	US-9709316-B2
Application number	US-201313761350-A
Country	US
Kind code	B2
Filing date	Feb 7, 2013
Priority date	Feb 7, 2013
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

A refrigerator having French-style doors is sealed between the doors by a first sealing pad linearly biased from a base fixed within a recess provided in an inner side portion of one door, and a second sealing pad carried by a mounting arm which is pivotally mounted and angularly biased from an inner side portion of the second door. When either door is closed against the other, the first and second sealing pads deflect and conform to each other to provide an effective seal. In one preferred embodiment of the invention, the first and second sealing pads take complementary concave and convex shapes which provide a larger cross-section for the overall sealing area and establish a high insulation value, while avoiding the need for an internal heater commonly employed in refrigerator doors.

First claim

What is claimed is:

1. A refrigerator comprising:
a cabinet shell including a first compartment and a second compartment, each of said first and second compartments including a respective opening for receiving items to be refrigerated;
first and second French-style doors pivotally mounted to the cabinet shell about the opening of the first compartment at laterally spaced locations, each of said first and second doors including an inner side wall portion, wherein the inner side wall portions of the first and second doors define a space between the doors when the doors are in a closed configuration;
first and second gaskets arranged between the first and second doors and the cabinet shell for sealing perimeter portions of the opening of the first compartment; and
a mullion seal assembly including:
a first seal subassembly provided on the inner side wall portion of the first door, said first seal subassembly including a first sealing pad extending along and biased for linear movement away from the inner side wall portion of the first door; and
a second seal subassembly provided on the inner side wall portion of the second door, said second seal subassembly including a second sealing pad extending along and being biased for angular movement away from the inner side wall portion of the second door wherein, upon closing the first and second doors, the first and second sealing pads are biased into engagement to create a seal along the inner side wall portions of the first and second doors.

2. The refrigerator according to claim 1 , wherein the first seal subassembly further includes a plurality of spring elements acting between the first door and the first sealing pad to linearly bias the first sealing pad.

3. The refrigerator according to claim 2 , wherein the first seal subassembly further includes a base mounted in a recess formed in the inner side wall portion of the first door, said plurality of spring elements acting between the base and the first sealing pad.

4. The refrigerator according to claim 3 , wherein the first seal subassembly further includes a plurality of guide elements extending from the base, said plurality of spring elements being arranged about the plurality of guide elements.

5. The refrigerator according to claim 4 , further including a plurality of sleeves extending from the first sealing pad, said plurality of guide elements extending into the plurality of sleeves for guiding the first sealing pad for linear movement.

6. The refrigerator according to claim 5 , wherein the plurality of spring elements abut the plurality of sleeves and linearly bias the first sealing pad away from the base.

7. The refrigerator according to claim 4 , further comprising a plurality of catch elements provided on the base, said plurality of catch elements limiting relative movement between the base and the first sealing pad.

8. The refrigerator according to claim 1 , wherein the second seal subassembly further includes at least one spring acting between the second door and the second sealing pad to bias the second sealing pad for pivotal movement relative to the second door.

9. The refrigerator according to claim 8 , wherein the second seal subassembly further includes a mounting arm pivotally mounted to the second door, said second sealing pad being fixed to the mounting arm.

10. The refrigerator according to claim 9 , wherein the at least one spring constitutes a torsion spring acting between the second door and the second sealing pad.

11. The refrigerator according to claim 1 , wherein the first and second sealing pads include complementary concave and convex sealing surfaces.

12. The refrigerator according to claim 1 , further comprising an alignment extension extending from one of the first and second sealing pads, wherein another one of the first and second sealing pads includes a ledge, said alignment extension sliding along the ledge upon closing of the first and second doors.

13. The refrigerator according to claim 1 , wherein the mullion seal assembly lacks an internal heater.

14. A method of sealing an opening providing access to a refrigerator compartment upon closing either one or both of first and second laterally spaced French-style doors comprising:
biasing a first sealing pad, which extends along an inner side wall portion of the first door, linearly away from the inner side wall portion; and
biasing a second sealing pad, which extends along an inner side wall portion of the second door, angularly away from the inner side wall portion of the second door wherein the inner side wall portions of the first and second doors define a space between the doors when the doors are in a closed configuration and, to seal the opening, the first and second sealing pads are biased into engagement to create a seal with the space along the inner side wall portions of the first and second doors.

15. The method of claim 14 , wherein biasing the first sealing pad is performed through a plurality of spring elements acting between the first door and the first sealing pad to linearly bias the first sealing pad.

16. The method of claim 15 , further comprising: biasing the first sealing pad away from a base mounted in a recess formed in the inner side wall portion of the first door.

17. The method of claim 16 , further comprising: guiding the first sealing pad for linear movement through a plurality of guide elements extending from one of the base and the first sealing pad, and into a plurality of sleeves extending from another of the base and the first sealing pad, said plurality of spring elements being arranged about the plurality of guide elements.

18. The method of claim 14 , further comprising: limiting linear movement of the first sealing pad by engaging a plurality of catch elements.

19. The method of claim 14 , wherein biasing the second sealing pad is performed through at least one spring acting between the second door and the second sealing pad to bias the second sealing pad for angular movement relative to the second door.

20. The method of claim 19 , wherein biasing the second sealing pad is further performed through a mounting arm pivotally mounted to the second door, said second sealing pad being fixed to the mounting arm.

21. The method of claim 20 , wherein the at least one spring constitutes a torsion spring acting between the second door and the second sealing pad.

22. The method of claim 14 , further comprising: sealing the first and second sealing pads through complementary concave and convex sealing surfaces.

23. The method of claim 14 , further comprising: aligning an extension extending from one of the first and second sealing pads with structure on another one of the first and second sealing pads upon closing of the first and second doors.

Assignees

• Miersen Roger C
• Gose Thomas E
• Jenkins James H
• Whirlpool Co

Inventors

• Miersen Roger C
• Gose Thomas E
• Jenkins James H

Classifications

• F25D2323/021

  French doors · CPC title

• F25D23/02

  Doors; Covers (F25D23/08 takes precedence {locks or fastenings E05B65/0042}) · CPC title

• F25D23/028 Primary

  Details · CPC title

• F25D23/087 Primary

  Sealing strips · CPC title