Oven muffle

• US 8,450,653 B2
• Filed: 05/29/2009
• Issued: 05/28/2013
• Est. Priority Date: 05/29/2008
• Status: Active Grant

• Current Assignee: Schott AG (Carl-Zeiss-Stiftung)
• Original Assignee: Schott AG (Carl-Zeiss-Stiftung)
• Inventors: Taplan, Martin, Zenker, Thomas, Schmidbauer, Wolfgang, Backes, Sascha, Goetz, Helga
• Primary Examiner(s): PELHAM, JOSEPH MOORE
• Application Number:
  US12/455,306
• Publication Number:
  US 20090301461A1
• Time in Patent Office: 1,460 Days
• Field of Search: None
• US Class Current: 219/405
• CPC Class Codes: F24C 15/08 Foundations or supports plates; Legs or pillars; Casings; Wheels tops, e.g. hot plates F24C15/10
• CPC Class Codes: F24C 7/06 Arrangement or mounting of electric heating elements

Abstract

An oven muffle having a receiving space, at least some regions of which are delimited by wall elements, in which at least one of the wall elements is permeable to IR radiation or has a region that is permeable to IR radiation. In the oven muffle, the cooking performance is successfully improved while also providing an easily cleanable interior because a reflecting element that reflects IR radiation is positioned in the region of the outer surface of the wall element on a side oriented away from the receiving space.

Claims

1. An oven muffle comprising a receiving space with at least some regions delimited by wall elements (11-15), at least one of the wall elements (11-15) permeable to IR radiation or having a region permeable to IR radiation, a reflecting element (30) that reflects IR radiation situated near an outer surface (17) of the wall element (11-15) on a side oriented away from the receiving space, at least one structural element (18) for producing scattered radiation each is on the outer surface (17) of the wall element (11-15) and/or in the wall element (11-15), and absorption elements (19) that are separate from the at least one structural element and that absorb IR radiation are inserted into and/or applied onto the wall element (11-15).

2. The oven muffle as recited in claim 1, wherein the wall element is of glass or glass ceramic.

3. The oven muffle as recited in claim 2, wherein a heating element (20) is situated outside the receiving space near the outer surface (17) of at least one of the wall elements (11-15).

5. The oven muffle as recited in claim 1, wherein the structural elements (18) are arranged to form zones with different scattering behaviors.

6. The oven muffle as recited in claim 5, wherein the structural elements (18) are formed onto and as one piece with the wall element (11-15).

7. The oven muffle as recited in claim 1, wherein the absorption elements that absorb IR radiation are inserted into and/or applied onto an interior surface of the wall element (11-15).

8. The oven muffle as recited in claim 6, wherein the wall element (11-15) is of glass or glass ceramic and partially absorbs IR radiation.

9. The oven muffle as recited in claim 8, wherein the reflecting element (30) is applied onto the outer surface (17) of the wall element (11-15).

10. The oven muffle as recited in claim 9, wherein the reflecting element (30) is applied in a form of a coating of a precious metal or a metal coating including a silver oxide, a tin oxide, an aluminum oxide, a metal oxide, a tin oxide, an AZO coating, or an ITO coating.

11. The oven muffle as recited in claim 8, wherein the reflecting element (30) is a sheet-like blank, including a form of a reflecting foil situated near the outer surface (17).

12. The oven muffle as recited in claim 11, wherein on a side oriented toward the outer surface (17) of the wall element (11-15) at least a part of the reflecting element (30) has surface texturing.

13. The oven muffle as recited in claim 12, wherein the absorption elements (19) are arranged to form zones with different absorption behaviors.

14. The oven muffle as recited in claim 13, wherein the absorption elements (19) are decorative elements applied in a layer to the wall element (11-15) including by screen printing or electrophotographic printing.

15. The oven muffle as recited in claim 14, wherein the absorption elements (19) are printed-on ceramic paints.

16. The oven muffle as recited in claim 15, wherein the heating element (20) produces IR radiation with a wavelength in a range of less than 1.4 μ

m.

17. The oven muffle as recited in claim 16, wherein the reflecting element (30) is or is supported by a damping element (40).

18. The oven muffle as recited in claim 1, wherein a heating element (20) is situated outside the receiving space near the outer surface (17) of at least one of the wall elements (11-15).

19. The oven muffle as recited in claim 1, further comprising

a plurality of uniformly distributed structural elements (18) for producing scattered radiation disposed near the outer surface (17) of the wall element (11-15) and/or in the wall element (11-15).

20. The oven muffle as recited in claim 19, wherein the structural elements (18) are formed onto and as one piece with the wall element (11-15).

21. The oven muffle as recited in claim 1, wherein the wall element (11-15) is of glass or glass ceramic and partially absorbs IR radiation.

22. The oven muffle as recited in claim 1, wherein the reflecting element (30) is applied onto the outer surface (17) of the wall element (11-15).

23. The oven muffle as recited in claim 1, wherein the reflecting element (30) is a sheet-like blank, including a form of a reflecting foil situated near the outer surface (17).

24. The oven muffle as recited in claim 1, wherein a heating element (20) produces IR radiation with a wavelength in a range of less than 1.4 μ

m.

25. The oven muffle as recited in claim 1, wherein the reflecting element (30) is or is supported by a damping element (40).

4. An oven muffle comprising a receiving space with at least some regions delimited by wall elements (11-15), at least one of the wall elements (11-15) permeable to IR radiation or having a region permeable to IR radiation,

a reflecting element (30) that reflects IR radiation situated near an outer surface (17) of the wall element (11-15) on a side oriented away from the receiving space, and

absorption elements (19) that absorb IR radiation inserted into and/or applied onto an interior surface of the wall element (11-15).

26. The oven muffle as recited in claim 4, wherein at least one structural element (18) for producing scattered radiation each is near the outer surface (17) of the wall element (11-15) and/or in the wall element (11-15).

27. The oven muffle as recited in claim 4, wherein on a side oriented toward the outer surface (17) of the wall element (11-15) at least a part of the reflecting element (30) has a surface texturing.

28. The oven muffle as recited in claim 4, wherein the absorption elements (19) are arranged to form zones with different absorption behaviors.

29. The oven muffle as recited in claim 4, wherein the absorption elements (19) are decorative elements applied in a layer to the wall element (11-15) including by screen printing or electrophotographic printing.

30. The oven muffle as recited in claim 4, wherein the absorption elements (19) are printed-on ceramic paints.