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Fluid cooled litz coil inductive heater and connector therefor

  • US 5,461,215 A
  • Filed: 03/17/1994
  • Issued: 10/24/1995
  • Est. Priority Date: 03/17/1994
  • Status: Expired due to Term
First Claim
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1. An induction coil for generating a time varying magnetic field to induce electric current formation in an electrically conducting substance, the coil comprising:

  • a litz cable comprising a bundle of mutually electrically insulated wire filaments;

    a coolant tube, surrounding the litz cable and extending substantially parallel with the litz cable, for conveying a fluid for removing heat generated by the litz cable; and

    at least one connector including;

    a tubular conductive member sealably joining the coolant tube, the tubular member having an axial bore in fluid communication with the coolant tube and having at least one radial hole extending through a side wall of the tubular member into the axial bore, the litz cable extending into the bore, through the radial hole, and electrically connecting to the tubular member.

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