Title:
FAN MOTOR CONTROLLER
Document Type and Number:
Japanese Patent JP2753813
Kind Code:
B2
Abstract:
PURPOSE: To avoid the possibility of becoming unstable in the rotation of a fan motor or stopping the same due to the shortage of a torque when the fan motor is rotated with a low rotation, in the combustion equipment of a forced ventilation type, effected by a fan.
CONSTITUTION: When a combustion control circuit 15 must to drive a fan motor 21 by a principal power supply 11 through a fan motor constant current driving circuit 14, the switching element 32 of the combustion control circuit 15 is put ON also to permit the impressing of the output voltage Vm of a second power supply 31 on the fan motor 21. The output voltage Vm of the second power supply 31 i,s lower than the output voltage Vh of the principal power supply 11, however, it has a power of a degree capable of rotating the fan motor 21 with at least the lowest number of rotation.
Inventors:
SASAKI YOSHIHITO
Application Number:
JP5033795A
Publication Date:
May 20, 1998
Filing Date:
February 16, 1995
Export Citation:
Assignee:
HANSHIN EREKUTORITSUKU KK
International Classes:
F04D27/00; F23N3/08; F23N5/24; (IPC1-7): F23N3/08; F04D27/00; F23N5/24
Attorney, Agent or Firm:
Fukuda Takemichi (2 outside)
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