Title:
WELDING TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2011/102204
Kind Code:
A1
Abstract:
Disclosed is a welding transformer for an inverter-type resistance welder, wherein an issue in that the maximum current decreased when the control frequency was increased is solved. Proposed is a welding transformer for an inverter-type resistance welder that enables the welder to be made more compact and energy saving. Since primary windings are made to have a thin structure by having copper winding plates laminated, a significant cooling effect can be achieved by cooling water paths of secondary windings. Therefore, the primary windings can be superimposed above and below the secondary windings. The two secondary winding copper plates are made to be in proximity with each other, constructing a structure wherein the inductance becomes very low. Furthermore, a structure wherein the transformer section and the control section are united together is adopted. In addition, since primary windings with a bent structure are used, inductance is minimized, and the overall structure of the welding transformer is made compact.
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Inventors:
HOUZAN KAZUKI (JP)
KAI KOUJI (JP)
NAGAI AKIRA (JP)
SUZUKI KAZUHIRO (JP)
KAI KOUJI (JP)
NAGAI AKIRA (JP)
SUZUKI KAZUHIRO (JP)
Application Number:
PCT/JP2011/051700
Publication Date:
August 25, 2011
Filing Date:
January 28, 2011
Export Citation:
Assignee:
KOYO GIKEN INC (JP)
HOUZAN KAZUKI (JP)
KAI KOUJI (JP)
NAGAI AKIRA (JP)
SUZUKI KAZUHIRO (JP)
HOUZAN KAZUKI (JP)
KAI KOUJI (JP)
NAGAI AKIRA (JP)
SUZUKI KAZUHIRO (JP)
International Classes:
H01F30/00; B23K9/073; H01F27/28; H01F38/08
Foreign References:
| JPH0623564A | 1994-02-01 | |||
| JPH045629U | 1992-01-20 | |||
| JPS56126828U | 1981-09-26 | |||
| JPS63182687U | 1988-11-24 | |||
| JP2008130657A | 2008-06-05 | |||
| JP2571683Y2 | 1998-05-18 | |||
| JPH0582358A | 1993-04-02 | |||
| JP2007243071A | 2007-09-20 | |||
| JP3008433U | 1995-03-14 | |||
| JP2000223320A | 2000-08-11 |
Attorney, Agent or Firm:
KATO YUJI (JP)
Yuji Kato (JP)
Yuji Kato (JP)
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Claims: