Title:
VENTILATION DEVICE
Document Type and Number:
Japanese Patent JP2016186393
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a ventilation device capable of suppressing noise generated by rotation of a motor in a case of determining whether a power source voltage supplied from a commercial power source is a second voltage which is lower than a first voltage or not.SOLUTION: A ventilation device for ventilating air in a room includes a discharge air passage for exhausting the air in the room outdoors, a fan disposed in the discharge air passage, a control unit for controlling an operation of the fan by using a commercial power source, and a determining unit for determining whether the voltage supplied from the commercial power source is a second voltage which is lower than a first voltage or not. The determining unit determines that the voltage supplied from the commercial power source is the second voltage when a rotational frequency of the fan is below a rotational frequency corresponding to the first voltage in a case where the control unit has controlled the operation of the fan so that the fan is rotated at the first rotational frequency.SELECTED DRAWING: Figure 1
Inventors:
HASHIZUME KENJI
IWASHITA HIROYUKI
OHARA KAZUMA
RIKIMARU MITSUO
YUMITA MOTOHARU
IWASHITA HIROYUKI
OHARA KAZUMA
RIKIMARU MITSUO
YUMITA MOTOHARU
Application Number:
JP2015066663A
Publication Date:
October 27, 2016
Filing Date:
March 27, 2015
Export Citation:
Assignee:
TOTO LTD
International Classes:
F24F7/007; F24F7/06; F24F11/02; F24F11/04; F24F11/75; F26B9/02; F26B25/00
Attorney, Agent or Firm:
Masahiko Hinataji