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Patent Searching and Data


Title:
CONTROL DEVICE AND FLUID DISCHARGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/150759
Kind Code:
A1
Abstract:
This fluid discharge device is equipped with an impeller for causing a fluid to flow from an intake port to a discharge port, a DC motor for rotating the impeller, a housing for housing the impeller, and a DC motor control device. A discharge-changing member for changing the ease of flow of the fluid can be attached to and detached from the discharge port of the housing. As a result, it is possible to change the ease of flow of the fluid through the discharge port. The control device is equipped with a drive control unit for controlling the drive voltage supplied to the stator of the DC motor, a receiving unit for receiving a rotation speed signal indicating the rotation speed of the DC motor, and a determination unit for determining whether or not the ease of flow of the fluid through the discharge port has changed on the basis of the amount of change in the rotation speed during a fixed interval according to the rotation speed signals received by the receiver. The drive control unit increases the drive voltage when the ease of flow changes and the rotation speed change amount is positive. The drive control unit decreases the drive voltage when the ease of flow changes and the rotation speed change amount is negative.

Inventors:
HARA,Yasoya (338 Kuzetonoshiro-cho Minami-ku, Kyoto-sh, Kyoto 05, 〒6018205, JP)
SHIMIZU , Daisuke (338 Kuzetonoshiro-cho Minami-ku, Kyoto-sh, Kyoto 05, 〒6018205, JP)
Application Number:
JP2018/044655
Publication Date:
August 08, 2019
Filing Date:
December 05, 2018
Export Citation:
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Assignee:
NIDEC CORPORATION (338 Kuzetonoshiro-cho, Minami-ku Kyoto-sh, Kyoto 05, 〒6018205, JP)
International Classes:
F04D27/00; H02P7/29; A45D20/10
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