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Title:
LINEAR COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2011/062427
Kind Code:
A3
Abstract:
The present invention relates to a linear compressor, and more specifically, to a linear compressor capable of providing greater power by varying a frequency during the high load condition. The linear compressor of the present invention comprises: a fixed member which includes a compression space inside; a movable member which linearly reciprocates inside the fixed member, and compresses refrigerant sucked into the compression space; at least one spring which is configured to elastically support the movable member in a moving direction of the movable member; a mechanical unit which includes a motor that is configured to connect with the movable member and allows the movable member to linearly reciprocate in an axial direction; a rectification unit which receives AC power, and outputs the AC power as a DC voltage; an inverter unit which is applied with the DC voltage, converts the DC voltage into an AC voltage according to a control signal, and provides the AC voltage to the motor; a voltage sensor which senses the DC voltage outputted by the rectification unit; a current sensor which senses a current flowing between the motor and the inverter unit; and an electric control unit including a controller, which controls a necessary voltage of the motor from the current of the current sensor, and applies the control signal to the inverter unit by generating the control signal for controlling so that a frequency of the AC voltage converted by the inverter unit may be changed, if the necessary voltage is larger than the DC voltage of the voltage sensor.

Inventors:
HU, Jin Seok (382-22 Gyobang-dong, Happo-guMasan-si, Gyeongsangnam-do 631-110, 631-110, KR)
허진석 (경상남도 마산시 합포구 교방동 382-22, 631-110 Gyeongsangnam-do, 631-110, KR)
PARK, Shin Hyun (151-19 Yeongju2-dong, Jung-gu, Busan 600-112, 600-112, KR)
박신현 (부산광역시 중구 영주2동 151-19번지, 600-112 Busan, 600-112, KR)
KIM, Yong Tae (1 Daedong Apt, Mugye-ri Jangyu-myeo, Gimhae-si Gyeongsangnam-do 621-833, 621-833, KR)
김용태 (경상남도 김해시 장유면 무계리 대동아파트 1006동 1504호, 621-833 Gyeongsangnam-do, 621-833, KR)
Application Number:
KR2010/008159
Publication Date:
May 26, 2011
Filing Date:
November 18, 2010
Export Citation:
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Assignee:
LG ELECTRONICS INC. (20 Yeouido-dong, Yeongdeungpo-gu, Seoul 150-721, 150-721, KR)
엘지전자 주식회사 (서울 영등포구 여의도동 20, 150-721 Seoul, 150-721, KR)
HU, Jin Seok (382-22 Gyobang-dong, Happo-guMasan-si, Gyeongsangnam-do 631-110, 631-110, KR)
허진석 (경상남도 마산시 합포구 교방동 382-22, 631-110 Gyeongsangnam-do, 631-110, KR)
PARK, Shin Hyun (151-19 Yeongju2-dong, Jung-gu, Busan 600-112, 600-112, KR)
박신현 (부산광역시 중구 영주2동 151-19번지, 600-112 Busan, 600-112, KR)
KIM, Yong Tae (1 Daedong Apt, Mugye-ri Jangyu-myeo, Gimhae-si Gyeongsangnam-do 621-833, 621-833, KR)
International Classes:
F04B17/04; F04B35/04
Foreign References:
KR100801373B12008-02-05
KR100764277B12007-10-05
KR100845943B12008-07-11
JP2001090659A2001-04-03
Attorney, Agent or Firm:
LEE, Kwang-Yeon (LEE & KIM Patent & Trademark Attorneys, 9th F. Handuk Bldg.649-4 Yoksam-dong, Gangnam-gu, Seoul 135-912, 135-912, KR)
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Claims: