Door assembly for a dishwasher

• US 9,675,231 B2
• Filed: 09/09/2015
• Issued: 06/13/2017
• Est. Priority Date: 12/19/2013
• Status: Active Grant

• Current Assignee: Whirlpool Corporation
• Original Assignee: Whirlpool Corporation
• Inventors: Millett, Frederick A., Kutto, Kevin T., Welsh, Anthony B.
• Primary Examiner(s): ING, MATTHEW W
• Application Number:
  US14/848,846
• Publication Number:
  US 20150374200A1
• Time in Patent Office: 643 Days
• Field of Search: 134200, 3121381, 312228, 312326-328, 49 70, 49501, 428 34, 527861, 5278613
• CPC Class Codes: A47L 15/4246 Details of the tub A47L15/4272 takes precedence; insulation arrangements A47L15/4209
• CPC Class Codes: A47L 15/4257 Details of the loading door
• CPC Class Codes: A47L 15/4263 Door sealing arrangements

Abstract

A dishwasher includes a treating chamber for receiving dishes for treatment according to a cycle of operation and a door assembly selectively moveable to close an access opening to the treating chamber, the door assembly comprising a window assembly comprising first and second spaced window panes defining an intervening vacuum sealed chamber, a window assembly support frame provided on the door panel, and a seal provided between the window assembly support frame and the first and second panes and encapsulated by the window assembly support frame.

Claims

1. A door assembly for a dishwasher comprising a treating chamber for receiving dishes for treatment according to a cycle of operation and a door assembly selectively moveable to close an access opening to the treating chamber, the door assembly comprising:

a door panel adjacent the treating chamber and having a window opening;

a window assembly comprising first and second spaced window panes each having an inner surface, an outer surface, and a peripheral edge, with the inner surfaces being in an overlying and confronting relationship and defining an intervening vacuum sealed chamber, and a plurality of spacers located within the chamber between the confronting inner surfaces of the first and second spaced window panes to maintain the first and second spaced window panes in a spaced relationship;

a window assembly support frame provided on the door panel and supporting the window assembly within the window opening, the window assembly support frame extending around and directly contacting the peripheral edges of the first and second window panes to encapsulate the window assembly; and

a seal provided between and directly contacting at least a portion of the window assembly support frame and the peripheral edges of the first and second window panes and encapsulated by the window assembly support frame.

2. The door assembly according to claim 1 wherein the window assembly support frame is overmolded onto the window assembly.

3. The door assembly according to claim 1 further comprising a second seal provided between the window assembly support frame and an inner surface of the door panel.

4. The door assembly according to claim 3 wherein the second seal comprises at least one of a gasket, a foam sealant, a silicone sealant, or combinations thereof providing the sealing function.

5. The door assembly according to claim 1 wherein the seal between the window assembly support frame and the peripheral edges of the first and second window panes comprises polyisobutylene, silicone, rubber, or combinations thereof.

6. The door assembly according to claim 1 wherein the spacers comprise glass beads.

7. The door assembly according to claim 1 wherein the spacers are distributed between the confronting inner surfaces of the first and second spaced window panes randomly or in a pattern.

8. The door assembly according to claim 1 wherein the spacers are distributed in a pattern to form an image, text, or a combination thereof.

9. The door assembly according to claim 1 wherein the first window pane and the second window pane have different or the same levels of light transmission.

10. The door assembly according to claim 1 wherein the first window pane and the second window pane transmit the same or different wavelengths of light.

11. The door assembly according to claim 1 wherein the window assembly has a thickness of 7 mm or less.

12. A method of assembling a door assembly for a dishwasher comprising a treating chamber for receiving dishes for treatment according to a cycle of operation, the door assembly selectively moveable to close an access opening to the treating chamber, the method comprising:

providing a window assembly comprising first and second spaced window panes each having an inner surface, an outer surface, and a peripheral edge, with the inner surfaces being in an overlying and confronting relationship and defining an intervening vacuum sealed chamber, and a plurality of spacers located within the chamber between the confronting inner surfaces of the first and second spaced window panes to maintain the first and second spaced window panes in a spaced relationship;

providing a seal around and directly contacting at least a portion of the peripheral edges of the first and second window panes;

overmolding a window assembly support frame about a periphery of the window assembly to encapsulate and directly contact at least a portion of the peripheral edge of the first and second window panes and the seal; and

inserting the window assembly support frame into a window opening of a door panel such that the first and second window panes are supported within the window opening by the window assembly support frame.

13. The method according to claim 12 further comprising providing a second seal between the window assembly support frame and an inner surface of the door panel.

14. The method according to claim 13 wherein the second seal comprises at least one of a gasket, a foam sealant, a silicone sealant, or combinations thereof providing the sealing function.

15. The method according to claim 12 wherein the seal between the window assembly support frame and the peripheral edges of the first and second window panes comprises polyisobutylene, silicone, rubber, or combinations thereof.

16. The method according to claim 12 further comprising providing the plurality of spacers between the confronting inner surfaces of the first and second spaced window panes randomly or in a pattern.

17. The method according to claim 16 comprising providing the spacers in a pattern to form an image, text, or a combination thereof.

18. The method according to claim 12 further comprising forming the first window pane and the second window pane to have different or the same levels of light transmission.

19. The method according to claim 12 further comprising forming the first window pane and the second window pane to transmit the same or different wavelengths of light.

20. The method according to claim 12 wherein overmolding the window assembly support frame comprises injection molding the window assembly support frame about a periphery of the window assembly.