Surface heater, the electric range comprising the same, and the manufacturing method of the same

Patent metadata

Field	Value
Publication number	US-10904952-B2
Application number	US-201815900474-A
Country	US
Kind code	B2
Filing date	Feb 20, 2018
Priority date	Feb 21, 2017
Publication date	Jan 26, 2021
Grant date	Jan 26, 2021

Abstract

A surface heater including a substrate, an insulating layer positioned on the substrate, and a heater layer positioned on the insulating layer, wherein the insulating layer and the heating layer are co-fired.

First claim

What is claimed is:

1. A surface heater, comprising:
a substrate;
an insulating layer disposed on the substrate; and
a heater layer disposed on the insulating layer,
wherein the insulating layer comprises glass frit as a binder, and
wherein the binder comprises a Borosilicate component and/or a Bentonite component.

2. The surface heater of claim 1 , wherein the substrate comprises one of a glass material, a glass-ceramic material, or a ceramic material.

3. The surface heater of claim 1 , wherein the insulating layer comprises at least one of Boron nitride, Aluminum nitride, and Silicon nitride.

4. The surface heater of claim 1 , wherein the heater layer comprises at least one lanthanide oxide from a group consisting of LSM (Lanthanum Strontium Manganite), LSCF (Lanthanum Strontium Cobalt Ferrite), LNF (Lanthanum Nickel Ferrite), and LC (Lanthanum Cobalt oxide).

5. The surface heater of claim 1 , wherein the heater layer comprises a metal powder.

6. The surface heater of claim 5 , wherein the metal powder comprises at least one selected from a group consisting of silver (Ag), silver-palladium (Ag—Pd), and copper (Cu).

7. The surface heater of claim 1 wherein the heater layer comprises glass frit having the same composition as the binder of the insulating layer.

8. An electric range, comprising:
a surface heater, comprising:
a substrate,
a co-fired insulating layer disposed on the substrate, and
a co-fired heater layer disposed on the insulating layer,
wherein the insulating layer comprises glass frit as a binder and
wherein the binder comprises a Borosilicate component and/or a Bentonite component.

9. A method of manufacturing a surface heater, comprising:
preparing a substrate;
providing an insulating layer on the substrate;
providing a heater layer on the insulating layer; and
co-firing the insulating layer and the heater layer.

10. The method of claim 9 , further comprising: drying the heater layer prior to the co-firing the insulating layer and the heater layer step of the method.

11. The method of claim 9 , wherein the substrate comprises one of a glass material, a glass-ceramic material, or a ceramic material.

12. The method of claim 9 , wherein the insulating layer comprises at least one of Boron nitride, Aluminum nitride, and Silicon nitride.

13. The method of claim 9 , wherein the insulating layer comprises glass frit as a binder.

14. The method of claim 13 , wherein the binder comprises a Borosilicate component and/or Bentonite component.

15. The method of claim 9 , wherein the heater layer comprises at least one lanthanide oxide from a group consisting of LSM (Lanthanum Strontium Manganite), LSCF (Lanthanum Strontium Cobalt Ferrite), LNF (Lanthanum Nickel Ferrite), and LC (Lanthanum Cobalt oxide).

16. The method of claim 9 , wherein the heater layer comprises a metal powder.

17. The method of claim 16 , wherein the metal powder comprises at least one selected from a group consisting of silver (Ag), silver-palladium (Ag—Pd), and copper (Cu).

18. The method of claim 13 , wherein the heater layer comprises glass frit having the same component as the binder of the insulating layer.

Assignees

• Lg Electronics Inc

Inventors

• Jeong Changwoo
• Lee Youngjun
• Hwang Deok Hyun

Classifications

• H05B2203/017

  Manufacturing methods or apparatus for heaters · CPC title

• H05B2203/002

  Heaters using a particular layout for the resistive material or resistive elements · CPC title

• H05B3/68

  Heating arrangements specially adapted for cooking plates or analogous hot-plates · CPC title

• H05B3/265 Primary

  the insulating base being an inorganic material, e.g. ceramic (H05B3/262 takes precedence) · CPC title

• H05B3/141 Primary

  Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds · CPC title