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:
Mar. 14, 2023
Filed:
Oct. 01, 2020
Lg Electronics Inc., Seoul, KR;
Injae Lee, Seoul, KR;
Sangjoon Eum, Seoul, KR;
Jeonghwan Kim, Seoul, KR;
Mingyu Kim, Seoul, KR;
Heedon Jung, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
The present disclosure relates to an electric motor, and a compressor having the same. The electric motor includes a stator, and a rotor. The rotor includes a rotation shaft, a rotor core, and a plurality of permanent magnets. The rotor core includes permanent magnet insertion portions each formed therethrough in an axial direction so that the permanent magnet is inserted, and slots each formed through the rotor core in a manner that a core area of a front portion of a d-axis is smaller than a core area of a rear portion of the d-axis in a rotating direction of the rotor when an outer core part of the permanent magnet insertion portion is divided with respect to the d-axis. Accordingly, a decrease in inertia can be suppressed and an occurrence of vibration and noise due to Magnetic Pull Force (MPF) can be prevented.