Title:
AIR QUANTITY CONTROL DEVICE FOR RANGE HOOD
Document Type and Number:
Japanese Patent JP2019168168
Kind Code:
A
Abstract:
To provide an air quantity control device for a range hood, capable of controlling an air quantity to a desired set air quantity, and capable of suppressing the occurrence of abnormal sound from a fan motor due to flow of excess current to the fan motor, or the need of a long time until an air quantity reaches a desired set air quantity.SOLUTION: In an air quantity control device in which a control part is configured to control in accordance with a set air quantity, an electrical input value so as to coincide with a relation (setting relation) between a rotational speed of a fan motor and an electrical input value memorized in memory means, the control part applies when starting up the fan motor, a prescribed ignition voltage to the fan motor so as to start the fan motor, and when a normal control voltage corresponding to the electrical input value obtained so as to coincide with the setting relation is higher than the prescribed ignition voltage for a prescribed allowable voltage or more after starting the fan motor, the control part increases a voltage applied to the fan motor from the prescribed ignition voltage to the normal control voltage at a prescribed rising speed.SELECTED DRAWING: Figure 5
Inventors:
NISHI KENJI
Application Number:
JP2018056493A
Publication Date:
October 03, 2019
Filing Date:
March 23, 2018
Export Citation:
Assignee:
HARMAN CO LTD
International Classes:
F24F7/06; F24F7/007; F24F11/74
Domestic Patent References:
| JP2012220100A | 2012-11-12 | |||
| JP2014145485A | 2014-08-14 | |||
| JPH02174583A | 1990-07-05 | |||
| JPH06307719A | 1994-11-01 |
Foreign References:
| US20090128065A1 | 2009-05-21 |
Attorney, Agent or Firm:
Hitoshi Nishizawa
Takahiro Nosue
Takahiro Nosue