Vapor-phase type heating method and vapor-phase type heating apparatus
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United States of America Patent
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Jul 21, 2020
Grant Date -
Dec 6, 2018
app pub date -
Apr 11, 2018
filing date -
May 30, 2017
priority date (Note) -
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Abstract
A vapor-phase type heating method includes: collecting, in the vapor tank, the heat transfer liquid which has come into contact with a heating target object, has cooled to liquefy, and has fallen down as droplets from a front surface of the heating target object to a lower portion of a heating furnace; resupplying, to the heating furnace, heated gas to which the vapor has been supplied and which has been formed by supplying the vapor from the vapor tank to heated gas obtained from heating the heating target object discharged from the heating furnace to a circulation pathway; and heating the heating target object, at a predetermined rate of temperature rise in a state of an even distribution of the vapor of the heat transfer liquid by maintaining the vapor of the heat transfer liquid in a predetermined amount in the heating furnace by the collection and the supply.
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