Title:
ELECTRICAL HEATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/171898
Kind Code:
A1
Abstract:
This electrical heating device supplies power to a metal body to electrically heat said metal body, said electrical heating device comprising: at least two electrodes that are in contact with the metal body; a power supply unit for supplying power to the electrodes; a warning unit for warning of the occurrence of an abnormality in the electrical heating of the metal body; and an abnormality detecting unit for detecting an abnormality of the electrodes. The abnormality detection unit includes: a resistance value acquisition unit for acquiring the resistance value between the electrodes; a smoothing unit for acquiring a smoothed resistance value, which is obtained by smoothing the resistance values measured a plurality of times during electrical heating; and an abnormality determination unit that determines that an abnormality has occurred in the electrodes when the smoothed resistance value reaches a certain set value, and controls the warning unit so that the warning unit issues a warning that the abnormality has occurred in the electrodes.
Inventors:
IDE AKIHIRO (JP)
ISHIZUKA MASAYUKI (JP)
SAIKA MASAYUKI (JP)
NOGIWA KIMIHIRO (JP)
UENO NORIEDA (JP)
ISHIZUKA MASAYUKI (JP)
SAIKA MASAYUKI (JP)
NOGIWA KIMIHIRO (JP)
UENO NORIEDA (JP)
Application Number:
PCT/JP2019/005138
Publication Date:
September 12, 2019
Filing Date:
February 13, 2019
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES (JP)
International Classes:
H05B3/00; H05B3/03; B21D26/033; B21D37/16
Domestic Patent References:
WO2013011553A1 | 2013-01-24 |
Foreign References:
JP2013185499A | 2013-09-19 | |||
JP2004351292A | 2004-12-16 | |||
JP2011112911A | 2011-06-09 | |||
JP2016002588A | 2016-01-12 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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