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. 05, 2019
Filed:
Oct. 27, 2016
Lg Electronics Inc., Seoul, KR;
Jongyoon Choi, Seoul, KR;
Donghyun Kim, Seoul, KR;
Wooyoung Jung, Seoul, KR;
Dowon Kang, Seoul, KR;
Hyeongseok Kim, Seoul, KR;
LG ELECTRONICS INC., Seoul, KR;
Abstract
A linear compressor is provided which is capable of reducing noise and fabrication costs. The linear compressor may include a piston that performs a reciprocating motion within a cylinder, a linear motor that supplies a driving force to the piston, a sensor that detects a motor voltage and motor current associated with the motor, a valve plate provided at one end of the cylinder to adjust a discharge of a refrigerant compressed in the cylinder, a pressure changing unit or device that changes a variation rate of pressure applied to the piston before the piston reaches the valve plate during the reciprocating motion, and a controller that determines whether the variation rate of the pressure applied to the piston has changed using the detected motor voltage and motor current, and controls the motor to prevent the piston from colliding with the valve plate on the basis of the determination result.