Oven door and a chassis for a microwave oven or an appliance with microwave heating function

Patent metadata

Field	Value
Publication number	US-9750088-B2
Application number	US-201414439564-A
Country	US
Kind code	B2
Filing date	Jan 27, 2014
Priority date	Jan 25, 2013
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

An oven door for a microwave oven or an appliance with microwave heating function. The door includes a door frame enclosing the door and glass panels inside and/or in front of the frame. The frame includes a wave choke arranged between a support element and a cover element. The cover element is fixed or fixable at the support element and forms an outer portion of an inner side of the oven door. The cover element is made of a high temperature resistant non-metallic material and covers an outer portion of an inner side of an inner glass panel. The inner glass panel is clamped between the cover element and the support element and/or the wave choke. A sealing element made of a high temperature resistant textile material is arranged between the cover element and the inner glass panel. A corresponding chassis is provided for the oven or the appliance.

First claim

The invention claimed is:

1. An oven door ( 10 ) for a microwave oven or an appliance with microwave heating function, wherein
the oven door ( 10 ) comprises a door frame ( 22 , 24 , 26 ) enclosing said oven door ( 10 ) and a number of glass panels ( 34 , 36 , 38 , 40 ) being at least one of inside and in front of said door frame ( 22 , 24 , 26 ),
the door frame includes a support element ( 22 ), a cover element ( 24 ) and a wave choke ( 26 ), said support element ( 22 ) forming a front portion of the door frame ( 22 , 24 , 26 ),
the wave choke ( 26 ) is arranged between the support element ( 22 ) and the cover element ( 24 ),
the cover element ( 24 ) is fixed or fixable at the support element ( 22 ),
the cover element ( 24 ) forms at least an outer portion of an inner side of the oven door ( 10 ),
the cover element ( 24 ) covers an outer portion of an inner side of an inner glass panel ( 36 ),
the inner glass panel ( 36 ) is clamped between the cover element ( 24 ) with its inner side and at least one of the support element ( 22 ) and the wave choke ( 26 ) with its outer side,
a sealing element ( 44 ) is arranged between the cover element ( 24 ) and the inner glass panel ( 36 ),
the sealing element ( 44 ) is made of a high temperature resistant textile material, and
the cover element ( 24 ) is made of a high temperature resistant non-metallic material,
wherein the cover element ( 24 ) includes an L-shaped profile and an outer portion of said L-shaped profile covers at least a part of a circumferential side of said oven door ( 10 ).

2. The oven door according to claim 1 ,
wherein
both the textile material of the sealing element ( 44 ) and the non-metallic material of the cover element ( 24 ) are heat resistant up to more than 500° C., preferably of more than 550° C.

3. The oven door according to claim 1 ,
wherein
the non-metallic material of the cover element ( 24 ) includes at least one of high temperature resistant textiles and ceramics.

4. The oven door according to claim 1 ,
wherein
the cover element ( 24 ) is fixed or fixable at the support element ( 22 ) by a snap-in mechanism ( 42 , 46 ).

5. The oven door according to claim 1 ,
wherein the cover element ( 24 ) is fixed or fixable at the support element ( 22 ) by a snap-in mechanism ( 42 , 46 ) that includes a snap-in projection ( 42 ) and a groove ( 46 ) for receiving said snap-in projection ( 42 ), wherein the snap-in projection ( 42 ) is arranged at an inner side of the outer portion of the L-shaped profile of the cover element ( 24 ) and the groove ( 46 ) is arranged at an outer side of the support element ( 22 ).

6. The oven door according to claim 1 ,
wherein the cover element ( 24 ) is fixed or fixable at the support element ( 22 ) by a snap-in mechanism ( 42 , 46 ) that includes a snap-in projection ( 42 ) and a groove ( 46 ) for receiving said snap-in projection ( 42 ), wherein the snap-in projection ( 42 ) is arranged at an outer side of the support element ( 22 ) and the groove ( 46 ) is arranged at an inner side of the outer portion of the L-shaped profile of the cover element ( 24 ).

7. The oven door according to claim 1 ,
wherein
the cover element ( 24 ) is fixed or fixable at the support element ( 22 ) by screws.

8. The oven door according to claim 1 ,
wherein
the cover element ( 24 ) is fixed or fixable at the support element ( 22 ) by a press stud fixation.

9. The oven door according to claim 1 , wherein the support element ( 22 ) has a U-shaped cross section.

10. The oven door according to claim 9 , wherein the wave choke ( 26 ) is attached at a central portion of the U-shaped cross section of the support element ( 22 ).

11. The oven door according to claim 1 , wherein the wave choke ( 26 ) has a G-shaped cross section and a lamellae portion ( 28 ) comprising a plurality of lamellae.

12. The oven door according to claim 11 , wherein the sealing element ( 44 ) is arranged behind a slot in the G-shaped cross section of the wave choke ( 26 ).

13. A chassis ( 12 ) for a microwave oven or an appliance with microwave heating function, wherein
the chassis ( 12 ) comprises an oven cavity ( 14 ) and a front frame ( 16 ) enclosing circumferentially at least a part of a front opening of said oven cavity ( 14 ),
a gap is formed between the oven cavity ( 14 ) and the front frame ( 16 ),
an elongated gasket ( 20 ) is attached both within and in front of the gap formed between the oven cavity ( 14 ) and the front frame ( 16 ),
a front portion ( 30 ) of the gasket ( 20 ) is provided for sealing a gap between the chassis ( 12 ) and an oven door ( 10 ) arranged or arrangeable in front of said chassis ( 12 ) against steam and heat,
a rear portion ( 32 ) of the gasket ( 20 ) is provided for sealing the gap between the cavity ( 14 ) and the front frame ( 16 ) against steam, heat and microwaves.

14. The chassis according to claim 13 ,
wherein
the gasket ( 20 ) is made of a high temperature resistant textile material.

15. The chassis according to claim 13 ,
wherein
the gasket ( 20 ) has a thermal resistance of more than 500° C., preferably of more than 550° C.

16. The chassis according to claim 13 , wherein the oven cavity ( 14 ) is bordered by a side wall ( 18 ) and the front opening of the oven cavity ( 14 ) is enclosed by a flange ( 19 ) formed as an extension of the side wall ( 18 ), wherein the front frame ( 16 ) is attached at a front portion of the side wall ( 18 ) and wherein the front frame ( 16 ) encloses the flange ( 19 ).

17. A microwave oven or an appliance with microwave heating function including a pyrolytic cleaning function,
said microwave oven or the appliance with microwave heating function comprising an oven door ( 10 ) according to claim 1 and a chassis ( 12 ) comprising an oven cavity ( 14 ) and a front frame ( 16 ) enclosing circumferentially at least a part of a front opening of said oven cavity ( 14 ), wherein:
a gap is formed between the oven cavity ( 14 ) and the front frame ( 16 ),
an elongated gasket ( 20 ) is attached both within and in front of the gap formed between the oven cavity ( 14 ) and the front frame ( 16 ),
a front portion ( 30 ) of the gasket ( 20 ) is provided for sealing a gap between the chassis ( 12 ) and an oven door ( 10 ) arranged or arrangeable in front of said chassis ( 12 ) against steam and heat,
a rear portion ( 32 ) of the gasket ( 20 ) is provided for sealing the gap between the cavity ( 14 ) and the front frame ( 16 ) against steam, heat and microwaves.

Assignees

• Electrolux Home Products Corp Nv

Inventors

• Hofmann Arnd
• Schlotterer-Fratoianni Klaus

Classifications

• H05B6/763

  Microwave radiation seals for doors · CPC title

• H05B6/6426

  Aspects relating to the exterior of the microwave heating apparatus, e.g. metal casing, power cord · CPC title

• H05B6/6414

  Aspects relating to the door of the microwave heating apparatus · CPC title

• H05B6/6405 Primary

  Self-cleaning cavity · CPC title

• F24C15/04

  with transparent panels · CPC title