The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2025
Filed:
Dec. 23, 2020
Mitsubishi Electric Corporation, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A ventilation blower includes an inverter main circuit, a motor body driven by the main circuit, a control circuit that controls the main circuit, and a storage device. The storage device stores an angular velocity of a motor rotor and a torque current value at a first operation point at which to obtain a first air volume on a first load characteristic, and the angular velocity and the torque current value at a second operation point at which to obtain a second air volume on the load characteristic, the second air volume being different from the first air volume. The control circuit calculates, from the angular velocities and the torque current values at the first and second operation points, the angular velocity and the torque current value at a third operation point at which to obtain a third air volume on the load characteristic.