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:
Jun. 09, 2020
Filed:
Feb. 26, 2016
Mitsubishi Heavy Industries Compressor Corporation, Tokyo, JP;
Yoshiyuki Okamoto, Hiroshima, JP;
Abstract
The present invention provides a variable speed accelerator including: a constant-speed motor () having a constant-speed rotor () which is configured to rotate a constant-speed input shaft (Ac) of a transmission device () in a first direction; and a variable-speed motor () which has a variable-speed rotor () connected to a variable-speed input shaft (Av) of the transmission device (), having a cylindrical shape centered on an axis with a shaft insertion hole () passing therethrough in the axial direction through which the constant-speed input shaft (Ac) inserted, and configured to rotate an output shaft (Ao) at a maximum rotation rate by rotating the variable-speed rotor () at a maximum rotation rate in a second direction opposite to the first direction, wherein the variable speed accelerator further includes an AC power source line () which connects the variable-speed motor () with an AC power source to allow the variable-speed motor () to rotate in the second direction; a rotation rate controller () which is provided on the AC power source line () to control a rotation rate of the variable-speed motor (); a first switch (SW) provided on the AC power source line (); and a braking circuit () connected to portions locating between the variable-speed motor () and the rotation rate controller () with the first switch (SW) on the AC power source line ().