公开(公告)号：EP2104399A4

公开(公告)日：2012-09-05

申请号：EP07717717

申请日：2007-03-19

Applicant: PANASONIC CORP

Inventor： FUJINAMI TOMOYA ,  ISHIMARU NAOAKI ,  HIROTA IZUO ,  KATAOKA AKIRA

IPC: H05B6/12

CPC classification number: H05B6/062 ,  H05B2213/05 ,  H05B2213/07

公开(公告)号：EP2343952A4

公开(公告)日：2012-08-15

申请号：EP09823272

申请日：2009-10-22

Applicant: PANASONIC CORP

Inventor： FUJINAMI TOMOYA ,  OKUDA SUNAO ,  ISHIMARU NAOAKI ,  KATAOKA AKIRA

IPC: H05B6/12 ,  H05B6/06

CPC classification number: H05B6/062 ,  H05B2213/07

公开(公告)号：EP1545159A4

公开(公告)日：2008-12-10

申请号：EP03788107

申请日：2003-08-13

Applicant: PANASONIC CORP

Inventor： KEISHIMA TOSHIHIRO ,  KATAOKA AKIRA ,  AIHARA KATSUYUKI ,  MAKIO NOBUYOSHI ,  GOTOU KAZUYA

IPC: H05B6/36 ,  H05B6/12

CPC classification number: H05B6/1245 ,  Y02B40/126 ,  Y10T29/4902

Abstract: An induction heating coil having little high-frequency loss and producing little hast is easily manufactured by covering a conductor with a first insulating material to form a wire, then bundling and twisting such wires to form a stranded wire, covering the outer surface of the stranded wire with a second insulating material to form a coil wire, winding the coil wire a certain number of turns into a coil portion having a certain shape. The end portion of the coil portion and a connecting portion are heated with Joule heat while applying pressure to the end portion at the same time, so that the first and second insulating materials are fused and pressure-bonded to the conductor. Thus a terminal portion for the external connection of the coil portion is fixed while keeping the electrical connection with the conductor. Accordingly, an induction heating coil of low cost and stable quality can be easily manufactured. The induction heating coil producing little heat because of its high-frequency loss and suitable for induction heating of a highly-conductive nonmagnetic substance such as aluminum.