Enamel composition, method for preparing enamel composition, and cooking appliance

Patent metadata

Field	Value
Publication number	US-12006257-B2
Application number	US-202016795959-A
Country	US
Kind code	B2
Filing date	Feb 20, 2020
Priority date	Feb 22, 2019
Publication date	Jun 11, 2024
Grant date	Jun 11, 2024

Abstract

An enamel composition, a method for preparing an enamel composition, and a cooking appliance are provided. The enamel composition may include 15 to 50 wt % of silicon dioxide (SiO2); 1 to 10 wt % of boron oxide (B2O3); 10 to 20 wt % of at least one of lithium oxide (Li2O), sodium oxide (Na2O), or potassium oxide (K2O); 1 to 5 wt % of sodium fluoride (NaF); 1 to 10 wt % of zinc oxide (ZnO); and 20 to 50 wt % of at least one of titanium dioxide (TiO2), molybdenum oxide (MoO3), bismuth oxide (Bi2O3), cerium dioxide (CeO2), manganese dioxide (MnO2), or Iron oxide (Fe2O3), which provides an enamel composition with a reduced cleaning time, and facilitates cleaning without soaking in water.

First claim

What is claimed is:

1. An enamel composition, consisting of:
15 to 50 percent by weight (wt %) of silicon dioxide (SiO 2 );
1 to 10 wt % of boron oxide (B 2 O 3 );
10 to 20 wt % of at least one of lithium oxide (Li 2 O), sodium oxide (Na 2 O), or potassium oxide (K 2 O);
1 to 5 wt % of sodium fluoride (NaF);
1 to 10 wt % of zinc oxide (ZnO);
10 to 30 wt % of at least one of titanium dioxide (TiO 2 ), manganese dioxide (MnO 2 ), or Iron oxide (Fe 2 O 3 );
and 10 to 20 wt % of molybdenum oxide (MoO 3 ), bismuth oxide (Bi 2 O 3 ), and cerium dioxide (CeO 2 ) in total, wherein the enamel composition is a silicate-based glass composition.

2. A cooking appliance, comprising:
a cavity configured to define a cooking chamber;
a door configured to selectively open and close the cooking chamber;
at least one heating source configured to supply heat to the cooking chamber;
a buffer layer coated on an inner surface of the cavity or an inner surface of the door;
a coating layer coated on the buffer layer and formed using the enamel composition of claim 1 .

Assignees

• Lg Electronics Inc

Inventors

• Choi Suyeon
• Kim Young Seok

Classifications

• F24C15/02

  Doors specially adapted for stoves or ranges · CPC title

• F24C15/005

  Coatings for ovens · CPC title

• C23D5/04

  by dry methods · CPC title

• C23D5/02

  by wet methods · CPC title

• C03C2218/17

  from a solid phase · CPC title