Metal sector having curved inner surface and cold crucible induction melter having the same

Patent metadata

Field	Value
Publication number	US-9265095-B2
Application number	US-201113883645-A
Country	US
Kind code	B2
Filing date	Sep 26, 2011
Priority date	Sep 26, 2011
Publication date	Feb 16, 2016
Grant date	Feb 16, 2016

Abstract

A cold crucible induction melter includes a wall formed of a plurality of metal sectors insulated by an insulator. Each metal sector includes an inner curved portion which forms an inner surface of the wall and is convex inward relative to the wall, an outer planar portion which forms an outer surface of the wall, and two side planar portions which connect the inner curved portion to the outer planar portion. The metal sector further includes a cooling passage longitudinally formed inside the metal sector, and an insulation layer covering the inner curved portion and the two side planar portions.

First claim

What is claimed is:

1. A cold crucible induction melter, comprising:
a plurality of metal sectors forming a wall of the cold crucible induction melter, each of the metal sectors including
an inner curved portion forming an inner side surface of the metal sector, the inner curved portion being convex inward relative to the wall and having a semicircular shape as a whole to prevent an electric arc from being generated,
an outer planar portion forming an outer side surface of the metal sector and having a planar shape,
two side planar portions forming side surfaces of the metal sector, connecting the inner curved portion to the outer planar portion and having a planar shape,
a top planar portion forming a top end surface,
a bottom planar portion forming a bottom end surface,
a cooling passage longitudinally formed in inside the metal sector such that an inner periphery of the metal sector forms the cooling passage, the cooling passage extending from a bottom end surface to a top end surface of the metal sector such that both ends of the cooling passage are open, respectively, at the bottom end surface and the top end surface of the metal sector, and
an insulation layer covering the inner curved portion and the two side planar portions; and
a connection pipe connecting the cooling passage of the metal sector to a cooling passage of an adjacent metal sector on the top end surface of the metal sector, wherein a coolant flows in one direction from a bottom end to a top end of the metal sector and a top end to a bottom end of the adjacent metal sector.

2. A cold crucible induction melter, comprising:
a plurality of metal sectors forming a wall of the cold crucible induction melter, each of the metal sectors including
an inner curved portion forming an inner side surface of the mental sector, the inner curved portion being convex inward relative to the wall and having a semicircular shape as a whole to prevent an electric arc from being generated,
an outer planar portion forming an outer side surface of the metal sector and having a planar shape,
two side planar portions forming side surfaces of the metal sector, connecting the inner curved portion to the outer planar portion and having a planar shape,
a top planar portion forming a top end surface,
a bottom planar portion forming a bottom end surface,
a cooling passage longitudinally formed inside the metal sector such that an inner periphery of the metal sector forms the cooling passage, the cooling passage extending from a bottom end surface to a top end surface of the metal sector such that both ends of the cooling passage are open, respectively, at the bottom end surface and the top end surface of the metal sector, and
an insulation layer covering the inner curved portion and the two side planar portions;
a cooling tube provided outside the wall; and
a connection pipe connecting the cooling passage of the metal sector to a cooling passage of the cooling tube on the top end surface of the metal sector, wherein a coolant flows in one direction through the cooling tube and the metal sector.

3. The cold crucible induction melter according to claim 2 , wherein the number of cooling tubes Is equal to the number of metal sectors, and
wherein each of the cooling tubes is connected to the cooling passage of the corresponding single sector.

Assignees

• Kim Cheon Woo
• Kim Deuk Man
• Choi Seok Mo
• Jo Hyun Jun
• Cho Hyun Je
• Park Seung Chul
• Hwang Tae Won
• Korea Hydro & Nuclear Power Co

Inventors

• Kim Cheon Woo
• Kim Deuk Man
• Choi Seok Mo
• Jo Hyun Jun
• Cho Hyun Je
• Park Seung Chul
• Hwang Tae Won

Classifications

• H05B6/28 Primary

  Protective systems · CPC title

• F27D2099/0015

  Induction heating · CPC title

• F27B14/061

  Induction furnaces · CPC title

• Y02P10/253

  Cross-Sectional Technologies · mapped topic

• F27B14/08

  Details specially adapted for crucible or pot furnaces · CPC title