Invention Grant
- Patent Title: Method of controlling rotational speed of impeller
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Application No.: US13816186Application Date: 2012-02-29
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Publication No.: US09602042B2Publication Date: 2017-03-21
- Inventor: Shintarou Tada , Masayuki Sugimura
- Applicant: Shintarou Tada , Masayuki Sugimura
- Applicant Address: JP
- Assignee: NISSHIN STEEL CO., LTD.
- Current Assignee: NISSHIN STEEL CO., LTD.
- Current Assignee Address: JP
- Agency: Fitch Even Tabin & Flannery LLP
- Priority: JP2011-049827 20110308
- International Application: PCT/JP2012/055084 WO 20120229
- International Announcement: WO2012/121078 WO 20120913
- Main IPC: H02P29/00
- IPC: H02P29/00 ; C21C1/02 ; C21C1/06 ; F27D27/00
Abstract:
A load current value I of a motor rotationally driving an impeller is read out when the impeller is rotated at a predetermined set rotational speed X0, and the rotational speed of the impeller is increased so that the load current value I becomes equal to or larger than a threshold value I0 when it is determined that the load current value I is smaller than the predetermined threshold value I0.
Public/Granted literature
- US20130333521A1 METHOD OF CONTROLLING ROTATIONAL SPEED OF IMPELLER Public/Granted day:2013-12-19
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