Linear compressor and method for controlling the same

A technology of linear compressors, compressors, applied in the field of compressors, capable of solving problems such as collisions (or collisions, pistons not moving forward, compression not being performed properly, etc.

Active Publication Date: 2017-07-28
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Meanwhile, in a linear compressor, since the piston reciprocates and is not mechanically locked in the cylinder, when an excessive voltage is suddenly applied, the piston may

Method used

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  • Linear compressor and method for controlling the same
  • Linear compressor and method for controlling the same
  • Linear compressor and method for controlling the same

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Embodiment Construction

[0047] Hereinafter, embodiments disclosed herein will be described in detail with reference to the accompanying drawings. It should be noted that the technical terms used herein are only used to describe specific embodiments, but are not limited to the present invention. Moreover, unless otherwise specifically defined, technical terms used herein should be interpreted as meanings generally understood by those of ordinary skill in the art to which the present invention pertains, and should not be interpreted too broadly or too narrowly. Also, if technical terms used herein are wrong terms that cannot correctly express the spirit of the present invention, they should be replaced by technical terms that are correctly understood by those skilled in the art. In addition, general terms used in the present invention should be interpreted based on dictionary definitions or contexts, and should not be interpreted too broadly or too narrowly.

[0048] In the following, reference will b...

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Abstract

The present invention provides a linear compressor capable of reducing noise and fabricating costs, the linear compressor comprising a piston to perform a reciprocating motion within a cylinder, a linear motor to supply a driving force for the motion of the piston, a sensing unit to detect motor voltage and motor current associated with the motor, a valve plate provided on one end of the cylinder to adjust a discharge of a refrigerant compressed in the cylinder, a pressure changing unit to change a variation rate of pressure applied to the piston before the piston reaches the valve plate during the reciprocating motion, and a controller to determine whether the variation rate of the pressure applied to the piston has changed using the detected motor voltage and motor current, and control the motor to prevent the piston from colliding with the valve plate on the basis of the determination result.

Description

technical field [0001] The present application relates to a linear compressor and a control method thereof, and more particularly to a compressor capable of reducing noise by controlling the movement of the piston in a manner that prevents the piston from colliding with the discharge unit of the cylinder without adding a separate sensor, and its control method. Background technique [0002] Generally speaking, a compressor is a device that converts the mechanical energy of a compressible fluid into compression energy, and constitutes a part of refrigeration equipment such as refrigerators and air conditioners. [0003] Compressors are roughly classified into reciprocating compressors, rotary compressors, and scroll compressors. The reciprocating compressor is configured such that a compression space for sucking and discharging operating gas is formed between a piston and a cylinder, and the refrigerant is compressed as the piston linearly reciprocates in the cylinder. The ...

Claims

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Application Information

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IPC IPC(8): F04B49/06F04B39/00F04B35/04
CPCF04B35/04F04B39/0027F04B49/06F04B2203/0402F04B2203/0401F04B2201/0604F04B2201/0206F04B2201/02F04B35/045F04B49/12F04B49/022F04B49/065
Inventor 崔钟允金东炫政宇永姜棹远金炯锡
Owner LG ELECTRONICS INC
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