Surface heater, electric range having the same, and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10764965-B2
Application number	US-201715440598-A
Country	US
Kind code	B2
Filing date	Feb 23, 2017
Priority date	Feb 24, 2016
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

An apparatus including a surface heater, the surface heater including a substrate having a surface formed of an electrically insulating material, heating element attached to the surface of the substrate by sintering predetermined powder including lanthanide oxide powder, and a power supply unit configured to supply electricity to the heating element wherein a manufacturing method of the surface heater includes baking the predetermined powder at a baking temperature of 900° C. or lower.

First claim

What is claimed is:

1. An apparatus comprising a surface heater, the surface heater comprising:
a heating substrate comprising an electrically insulating surface wherein the electrically insulating surface comprises a glass material;
a heating element attached to the electrically insulating surface, the heating element comprising lanthanide oxide and a metal material; and
a power supply unit to supply electricity to the heating element,
wherein the heating element is attached to the electrically insulating surface by sintering a predetermined powder comprising a lanthanide oxide powder and a metal powder, and
wherein the heating element comprises 30 to 60% by weight of the lanthanide oxide and 40 to 70% by weight of the metal material, the lanthanide oxide is Lanthanum Cobalt (LC).

2. The apparatus of claim 1 , wherein the metal material is Silver (Ag).

3. The apparatus of claim 2 , wherein a particle size of the lanthanide oxide powder is 0.4 μm.

4. The apparatus of claim 2 , wherein the heating element comprises 40 to 55% by weight of the lanthanide oxide and 45 to 60% by weight of the metal material.

5. The apparatus of claim 1 wherein a particle size of the lanthanide oxide powder is 0.4 μm.

6. The apparatus of claim 5 , wherein the heating element comprises 40 to 55% by weight of the lanthanide oxide and 45 to 60% by weight of the metal material.

7. The apparatus of claim 1 , wherein the heating element comprises 40 to 55% by weight of the lanthanide oxide and 45 to 60% by weight of the metal material.

Assignees

• Lg Electronics Inc

Inventors

• Lee Youngjun
• KU Kyoungjin
• Hwang Deokhyun

Classifications

• H05B3/26

  heating conductor mounted on insulating base {(for transparent areas H05B3/84, H05B3/86)} · CPC title

• H05B2203/017

  Manufacturing methods or apparatus for heaters · CPC title

• H05B2203/003

  using serpentine layout · CPC title

• B22F7/064

  using an intermediate powder layer · CPC title

• H05B3/12 Primary

  characterised by the composition or nature of the conductive material · CPC title