Stationary induction electric apparatus

Patent metadata

Field	Value
Publication number	US-9251939-B1
Application number	US-201514686079-A
Country	US
Kind code	B1
Filing date	Apr 14, 2015
Priority date	Aug 8, 2014
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

An iron core is configured as a winding iron core block group that is obtained in such a manner that winding iron core blocks having rectangular cross-sections each of which is obtained by laminating magnetic metal ribbons with a predetermined width and which have plural widths and laminated thicknesses are arranged in the width direction of the magnetic metal ribbons. The laminated thickness of the winding iron core block located in the middle of the width direction of the magnetic metal ribbons is larger, and the cross-section of each iron core leg is configured substantially in a circular shape by centering the winding iron core blocks in the laminated direction of the magnetic metal ribbons. Upper and lower yokes are arranged in such a manner that the bottom faces of the winding iron core blocks are aligned, and an in-window support member supports the upper yoke on a plane.

First claim

What is claimed is:

1. A stationary induction electric apparatus,
wherein the main body of the stationary induction electric apparatus is configured by including an iron core having, at least, two iron core legs and a winding wound around each iron core leg;
the iron core is configured as a winding iron core block group obtained in such a manner that three or more winding iron core blocks each of which is obtained by bending laminated magnetic metal ribbons in a circular shape are arranged and combined in the width direction of the magnetic metal ribbons;
the winding iron core blocks configuring the winding iron core are configured in such a manner that the magnetic metal ribbons having a specific width are laminated to form one winding iron core block, the magnetic metal ribbons are laminated to have a larger laminated thickness in the winding iron core block nearer the middle of the width direction of the magnetic metal ribbons, and the winding iron core block located in the middle of the width direction of the magnetic metal ribbons has a larger width than those located at the both ends;
each of the iron core legs of the winding iron core is configured in such a manner that the winding iron core blocks are centered in the laminated direction of the magnetic metal ribbons and the cross-section of each iron core leg in the width direction and the laminated direction of the magnetic metal ribbons is formed substantially in a circular shape; and
at least one yoke of the winding iron core is arranged while side faces of the winding iron core blocks in a window are aligned on the same plane.

2. The stationary induction electric apparatus according to claim 1 ,
wherein the winding iron core has side yokes, and at least one side yoke is arranged while side faces of the winding iron core blocks in the window are aligned on the same plane.

3. The stationary induction electric apparatus according to claim 1 ,
wherein the winding iron core has side yokes, and at least one side yoke is arranged while side faces of the winding iron core blocks outside the window are aligned on the same plane.

4. The stationary induction electric apparatus according to claim 1 ,
wherein the iron core legs are installed so as to be erected in the gravity direction, an upper yoke is arranged while side faces of the winding iron core blocks in the window are aligned on the same plane, and a plate-like iron core support member is arranged on the lower side of the upper yoke to support the upper yoke.

5. A stationary induction electric apparatus,
wherein the main body of the stationary induction electric apparatus is configured by including an iron core having, at least, two iron core leg and a winding wound around each iron core leg;
the iron core is configured as a winding iron core block group obtained in such a manner that three or more winding iron core blocks each of which is obtained by bending laminated magnetic metal ribbons in a circular shape are arranged and combined in the width direction of the magnetic metal ribbons;
the winding iron core blocks configuring the winding iron core are configured in such a manner that the magnetic metal ribbons having a specific width are laminated to form one winding iron core block, the magnetic metal ribbons are laminated to have a larger laminated thickness in the winding iron core block nearer the middle of the width direction of the magnetic metal ribbons, and the winding iron core block located in the middle of the width direction of the magnetic metal ribbons has a larger width than those located at the both ends;
each of the iron core legs of the winding iron core is configured in such a manner that the winding iron core blocks are centered in the laminated direction of the magnetic metal ribbons and the cross-section of each iron core leg in the width direction and the laminated direction of the magnetic metal ribbons is formed substantially in a circular shape;
at least one yoke of the winding iron core is arranged while side faces of the winding iron core blocks in a window are aligned on the same plane; and
at least one yoke of the winding iron core is arranged while side faces of the winding iron core blocks outside the window are aligned on the same plane.

6. The stationary induction electric apparatus according to claim 5 ,
wherein the winding iron core has side yokes, and at least one side yoke is arranged while side faces of the winding iron core blocks in the window are aligned on the same plane.

7. The stationary induction electric apparatus according to claim 5 ,
wherein the winding iron core has side yokes, and at least one side yoke is arranged while side faces of the winding iron core blocks outside the window are aligned on the same plane.

8. The stationary induction electric apparatus according to claim 5 ,
wherein the iron core legs are installed so as to be erected in the gravity direction, an upper yoke is arranged while side faces of the winding iron core blocks in the window are aligned on the same plane, and a plate-like iron core support member is arranged on the lower side of the upper yoke to support the upper yoke.

Assignees

• Hitachi Ltd

Inventors

• Miyamoto Naoya
• Ichimura Satoshi
• Kurita Naoyuki

Classifications

• H01F27/25 Primary

  made from strips or ribbons (H01F27/26 takes precedence) · CPC title

• H01F17/062

  Toroidal core with turns of coil around it · CPC title

• H01F3/04 Primary

  made from strips or ribbons · CPC title

• H01F27/24 Primary

  Magnetic cores · CPC title

• H01F27/26

  Fastening parts of the core together; Fastening or mounting the core on casing or support (on coil H01F27/30) · CPC title