Microwave oven or a multifunctional oven with microwave heating function

Patent metadata

Field	Value
Publication number	US-10448464-B2
Application number	US-201314647897-A
Country	US
Kind code	B2
Filing date	Oct 23, 2013
Priority date	Jan 25, 2013
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A microwave oven or multifunctional oven with microwave heating function. The oven includes a cavity with an open front side and a front frame enclosing at least partially a front portion of the cavity. The cavity and the front frame include metal sheet. The front frame is connected to the cavity by fixing elements. A gap is formed between the cavity and the front frame. The gap encloses at least partially the front portion of the cavity and the front frame encloses the gap. The oven includes a door covering the open front side and the gap in a closed state of the door. The gap is at least partially filled by a gasket at least part of which includes one or more materials having low heat conductivity, so that the front frame is thermally decoupled from the cavity by the part of the gasket or the gap.

First claim

The invention claimed is:

1. A microwave oven or a multifunctional oven with microwave heating function, said oven comprising:
an oven cavity with side walls, a top wall and a bottom wall, an open front side, and a rim formed at the front side,
a front frame enclosing at least partially a front portion of the oven cavity,
a gap formed between front portions of the side walls, the top wall and the bottom wall of the oven cavity and the front frame,

said gap enclosing at least partially the front portion of the oven cavity, the front frame enclosing the gap,
a gasket arranged in direct contact with the front frame and the rim, said gasket at least partially filling the gap, and
an oven door covering the open front side of the oven cavity and the gap in a closed state of said oven door,
wherein the gasket includes a front portion comprised of a first material and a rear portion comprised of a second material, the front portion being positioned to fill the gap between the oven cavity and the front frame and forward of the rear portion with respect to the oven cavity.

2. The oven according to claim 1 , wherein the front frame is connected to the oven cavity by a number of screws and/or rivets.

3. The oven according to claim 1 , wherein the front frame comprises a number of lugs that align with cooperating lugs arranged on at least one of the side walls, the top wall and/or the bottom wall of the oven cavity.

4. The oven according to claim 3 , wherein the screws penetrate the lugs.

5. The oven according to claim 1 , wherein one of the first material and the second material comprises at least one elastic material.

6. The oven according to claim 1 , wherein one of the first material and the second material comprises at least one electrically conductive material.

7. The oven according to claim 1 , wherein the first material comprises at least one electrically non-conductive material, while the second material comprises at least one electrically conductive material.

8. The oven according to claim 1 , wherein the gasket comprises one or more silicone materials.

9. The oven according to claim 7 , wherein the second material comprises at least one silicone material containing small metallic particles mixed into said silicone materials.

10. The oven according to claim 7 , wherein at least a part of the rear portion of the gasket fills the gap.

11. The oven according to claim 1 , wherein the gasket is formed as a single-piece part.

12. The oven according to claim 1 , wherein the oven door comprises a wave choke system extending in an outer portion of said oven door, so that the wave choke system is arranged in front of the gap, if the oven door is in the closed state.

13. The oven according to claim 7 , wherein the rear portion of the gasket has an L-shaped cross section, wherein said L-shaped rear portion of the gasket encloses at least partially the rim at the front side of the oven cavity.

14. The oven according to claim 1 , wherein the oven is a multifunctional oven with a microwave heating function and at least one further heating function.

15. The oven according to claim 3 , wherein the lugs in the front frame align with the cooperating lugs arranged on each one of the side walls, the top wall and/or the bottom wall.

16. A microwave oven or a multifunctional oven with microwave heating function, said oven comprising:
an oven cavity with an open front side,
a front frame enclosing at least partially a front portion of the oven cavity,
the oven cavity and the front frame are made of metal sheet,
the front frame is connected to the oven cavity by a number of fixing elements,
a gap formed between the oven cavity and the front frame, said gap enclosing at least partially the front portion of the oven cavity, the front frame enclosing the gap,
a gasket at least partially filling the gap,
an oven door covering the open front side of the oven cavity and the gap in a closed state of said oven door,
wherein:
at least a part of the gasket comprises one or more materials having low heat conductivity, so that the front frame is thermally decoupled from the oven cavity by said part of the gasket and/or by the gap,
a front portion and a rear portion of the gasket comprise different materials, and
the front portion comprises at least one electrically non-conductive material, while the rear portion comprises at least one electrically conductive material, the front portion being positioned to fill the gap between the oven cavity and the front frame and the rear portion partially enclosing a rim of the oven cavity.

17. The microwave oven or multifunctional oven with microwave heating function of claim 16 , wherein the front portion of the gasket has a triangular cross section and the rear portion of the gasket has an L-shaped cross section.

Assignees

• Electrolux Home Products Corp Nv

Inventors

• Wittmann Michael
• Specht Trevor
• Schutz Tobias
• Himmelein Benjamin

Classifications

• H05B6/763

  Microwave radiation seals for doors · CPC title

• F24C15/08

  Foundations or supports plates; Legs or pillars; Casings; Wheels (tops, e.g. hot plates F24C15/10) · CPC title

• H05B6/6402

  Aspects relating to the microwave cavity · CPC title

• H05B6/6426

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

• H05B6/6414 Primary

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