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

Patent metadata

Field	Value
Publication number	US-11401201-B2
Application number	US-202016796066-A
Country	US
Kind code	B2
Filing date	Feb 20, 2020
Priority date	Feb 22, 2019
Publication date	Aug 2, 2022
Grant date	Aug 2, 2022

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 phosphorus pentoxide (P2O5); 1 to 20 wt % of silicon dioxide (SiO2); 1 to 20 wt % of boron oxide (B2O3); 5 to 20 wt % of one or more of lithium superoxide (Li2O), sodium oxide (Na2O), or potassium oxide (K2O); 1 to 5 wt % of one or more of sodium fluoride (NaF), calcium fluoride (CaF2), or aluminum fluoride (AlF3); 1 to 35 wt % of one or more of magnesium oxide (MgO), barium oxide (BaO), or calcium oxide (CaO); and 5 to 30 wt % of one or more of titanium dioxide (TiO2), vanadium pentoxide (V2O5), molybdenum trioxide (MoO3), or iron oxide (Fe2O3). With such an enamel composition, cleaning may be performed at a low temperature for thermal decomposition, and contaminants, such as fat, may be more completely removed.

First claim

What is claimed is:

1. An enamel composition, comprising:
15 to 50 wt % of phosphorus pentoxide (P 2 O 5 );
1 to 20 wt % of silicon dioxide (SiO 2 );
1 to 20 wt % of boron oxide (B 2 O 3 );
5 to 20 wt % of at least one of lithium superoxide (Li 2 O), sodium oxide (Na 2 O), or potassium oxide (K 2 O);
1 to 5 wt % of at least one of sodium fluoride (NaF), calcium fluoride (CaF 2 ), or aluminum fluoride (AlF 3 );
1 to 35 wt % of at least one of magnesium oxide (MgO), barium oxide (BaO), or calcium oxide (CaO);
5 to 15 wt % of a sum of molybdenum trioxide (MoO 3 ) and vanadium pentoxide (V 2 O 5 ) or a sum of MoO 3 and iron oxide (Fe 2 O 3 ); and
5 to 30 wt % of titanium dioxide (TiO 2 ).

2. The enamel composition of claim 1 , further comprising:
1 to 20 wt % of aluminum oxide (Al 2 O 3 );
1 to 5 wt % of zirconium dioxide (ZrO 2 ); and
1 to 10 wt % of at least one of tin oxide (SnO) or zinc oxide (ZnO).

3. A cooking appliance, comprising:
a cavity in which a cooking chamber is formed;
a door that opens and closes the cooking chamber;
at least one of heat sources that supply heat for heating an object to be cooked in the cooking chamber; and
a coating layer formed using the enamel composition of claim 1 coated on an inner surface of the cavity or an inner surface of the door.

Assignees

• Lg Electronics Inc

Inventors

• Gwoo Dong Gun
• Kim Jingon
• Kim Young Seok

Classifications

• H05B6/6402

  Aspects relating to the microwave cavity · CPC title

• C03C3/068

  containing rare earths · CPC title

• C03C2207/04

  for steel · CPC title

• C03C8/20

  containing titanium compounds; containing zirconium compounds · CPC title

• C03C8/00 Primary

  Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions · CPC title