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Apparatus for manufacturing thermoelectric conversion element

  • US 9,087,963 B2
  • Filed: 04/11/2012
  • Issued: 07/21/2015
  • Est. Priority Date: 04/12/2011
  • Status: Active Grant
First Claim
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1. An apparatus for manufacturing a thermoelectric conversion element, comprising:

  • a crucible configured to store a molten thermoelectric conversion material;

    a heating apparatus arranged on an outer perimeter of the crucible, the heating apparatus being configured to heat the thermoelectric conversion material in the crucible to a temperature equal to or higher than a melting temperature of the thermoelectric conversion material;

    a preheating apparatus arranged above the crucible;

    a passage as part of the preheating apparatus, the passage configured to communicate between inside part of the crucible and an upper side of the heating apparatus;

    a tube made out of heat-resistant insulating material and configured to be heated by the preheating apparatus to a temperature lower than the melting temperature, a first end of the tube inserted into the crucible via the passage; and

    a decompression apparatus connected to the second end of the tube.

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