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Title:
FAN CONTROL DEVICE FOR COMBUSTION EQUIPMENT
Document Type and Number:
Japanese Patent JP2013201815
Kind Code:
A
Abstract:

To provide a fan control device for combustion equipment that is capable of achieving size reduction and cost reduction of a driving circuit for a fan motor.

An upper limit energization instruction value determination part 14 determines, based on an actual correlation that is a correlation between an energization instruction value and an actual energization amount of a fan motor 31 that is obtained using a detection energization amount by a current sensor 21 at the time when a predetermined energization instruction value is inputted into a motor drive circuit 20, an upper limit energization instruction value that is an energization instruction value corresponding to an upper limit value of a control range of the energization amount of the fan motor 31 and makes, when rotation speed of the fan motor 31 is equal to or higher than a high speed threshold value, an amendment in such a manner that as the rotation speed of the fan motor 31 is higher, the upper limit energization instruction value is set to be smaller. An energization instruction value limit part 15 limits a determination range of the energization instruction value by an energization instruction value determination part 13 to the upper limit energization instruction value or lower.


Inventors:
OKADA NAOYA
Application Number:
JP2012067682A
Publication Date:
October 03, 2013
Filing Date:
March 23, 2012
Export Citation:
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Assignee:
RINNAI KK
International Classes:
H02P7/29; F23N3/00; H02P29/02
Attorney, Agent or Firm:
Creation International Patent Office