KR100498302B1 - 리니어 컴프레샤의 용량가변형 모터 - Google Patents

리니어 컴프레샤의 용량가변형 모터 Download PDF

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KR100498302B1
KR100498302B1 KR10-2000-0082914A KR20000082914A KR100498302B1 KR 100498302 B1 KR100498302 B1 KR 100498302B1 KR 20000082914 A KR20000082914 A KR 20000082914A KR 100498302 B1 KR100498302 B1 KR 100498302B1
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South Korea
Prior art keywords
motor
linear compressor
stroke
coil
voltage
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KR10-2000-0082914A
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KR20020054155A (ko
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김형진
권계시
이혁
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엘지전자 주식회사
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Priority to KR10-2000-0082914A priority Critical patent/KR100498302B1/ko
Priority to US09/983,942 priority patent/US6841967B2/en
Priority to CNB011349042A priority patent/CN1242546C/zh
Priority to BRPI0105356A priority patent/BRPI0105356B1/pt
Priority to DE10158994.8A priority patent/DE10158994B4/de
Priority to IT2001MI002593A priority patent/ITMI20012593A1/it
Priority to JP2001384899A priority patent/JP3691789B2/ja
Publication of KR20020054155A publication Critical patent/KR20020054155A/ko
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Publication of KR100498302B1 publication Critical patent/KR100498302B1/ko

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28Layout of windings or of connections between windings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids

Abstract

본 발명은 리니어 컴프레샤의 용량가변형 모터에 관한 것으로, 모터 자체의 용량인 코일의 권선수를 자체적으로 변화시켜 스트로크르 제어할 수 있도록 한 것이다. 이를 위하여 본 발명은 코일의 권선수를 제어하여 부하 및 전압 변동에 대응하는 리니어 컴프레샤에 있어서, 상기 모터에 감겨지는 코일을 메인 코일과 다수의 서브 코일로 구분하고, 상기 메인코일과 다수의 서브코일의 각각의 접속단에 다수의 릴레이를 접속하여 구성한다.

Description

리니어 컴프레샤의 용량가변형 모터{COPACITY VARIABLE MOTOR FOR LINEAR COMPRESSOR}
본 발명은 리니어 컴프레샤의 용량가변형 모터에 관한 것으로,특히 모터 자체의 용량인 코일의 권선수를 자체적으로 변화시켜 스트로크르 제어할 수 있도록 한 리니어 컴프레샤의 용량가변형 모터에 관한 것이다.
일반적으로, 리니어 컴프레샤(Linear Compressor)는 회전운동을 직선운동으로 변환하는 크랭크 샤프트가 없어 마찰 손실이 적으므로, 효율면에서 다른 컴프레샤 보다 효율이 좋으며, 또한 리니어 컴프레샤가 냉장고나 에어컨으로 사용될 경우, 리니어 컴프레샤에 인가되는 스트로크전압을 가변시켜줌에 따라 압축비를 가변할 수 있어 가변 냉력 제어에도 사용될 수 있는 장점이 있는 것으로, 이와 같은 리니어 컴프레샤를 첨부한 도면을 참조하여 상세히 설명한다.
도1은 일반적인 리니어 컴프레샤의 운전제어장치에 대한 구성을 보인 블록도로서, 이에 도시된 바와같이 스트로크 지령치에 따른 스트로크 전압에 의해, 피스톤이 상하운동으로 스트로크를 가변시켜 냉력을 조절하는 리니어 컴프레샤(L.COMP)와; 스트로크 전압에 의해 스트로크를 증가시킴에 따라, 상기 리니어 컴프레샤 (L.COMP)에 발생하는 전압을 검출하는 전압검출부(30)와; 스트로크전압에 의해 스트로크를 증가시킴에 따라, 상기 리니어 컴프레샤(L.COMP)에 인가되는 전류를 검출하는 전류 검출부(20)와; 상기 전압검출부(30) 및 전류 검출부(20)로부터 검출된 전압과 전류로 스트로크를 계산하고, 그 스트로크를 스트로크지령치와 비교하여 그에 따른 스위칭제어신호를 출력하는 마이크로컴퓨터(40)와; 상기 마이크로컴퓨터 (40)의 스위칭제어신호에 따라, 교류전원을 트라이악(Tr1)으로 단속시켜 상기 리니어컴프레샤(L.COMP)에 스트로크전압을 인가하는 전기회로부(10)로 구성되고, 이와같이 구성된 종래 장치의 동작을 설명한다.
먼저, 리니어 컴프레샤(L.COMP)는 사용자에 의해 설정된 스트로크 지령치에 따른 스트로크전압에 의해, 피스톤이 상하 운동되고, 이로 인해 스트로크가 가변되어 냉력을 조절한다.
한편, 전기회로부(10)의 트라이악(Tr1)은 마이크로컴퓨터(40)의 스위칭제어신호에 의해 턴온 주기가 길어짐에 의해 스트로크가 증가되는데, 이때 리니어 컴프레샤(L.COMP)에 발생하는 전압과 전류를 각기 전압검출부(30)와 전류검출부(20)에서 검출하여 이를 마이크로컴퓨터(40)에 인가한다.
그러면, 상기 마이크로컴퓨터(40)는 상기 전압검출부(30)와 전류검출부(20)로부터 검출된 전압과 전류를 이용하여 스트로크를 계산한후, 이 스트로크를 스트로크지령치와 비교하여 그에 따라 스위칭제어신호를 출력한다.
즉, 상기 마이크로컴퓨터(40)는 계산된 스트로크가 스트로크 지령치 보다 작으면, 트라이악(Tr1)의 온주기를 길게 하는 스위칭제어신호를 출력하여 리니어컴프레샤(L.COMP)에 인가되는 스트로크전압을 증가시킨다.
여기서, 상기 리니어 컴프레샤(L.COMP)에 구비되는 모터는 코일이 소정 권선비로 균일하게 감겨져서, 상기 스트로크전압에 의해 구동전압이 발생되어 구동된다.
상술한 바와 달리, 상기 마이크로컴퓨터(40)는 계산된 스트로크가 스트로크 지령치 보다 크면, 트라이악(Tr1)의 온주기를 짧게 하는 스위칭제어신호를 출력하여 리니어 컴프레샤(L.COMP)에 인가되는 스트로크전압을 감소시킨다.
다시 말해서, 일반적인 리니어 컴프레샤는 트라이악의 온/오프 주기를 달리하여 스트로크제어를 수행함으로써 부하 및 전압변동에 대응한다.
그러나, 상기와 같은 종래 기술에 있어서, 스트로크 제어를 위하여 전압을 트라이악에 의해 스위칭하여 모터에 인가함으로써 노이즈가 발생하게 되고, 이 노이즈를 제거하기 위한 부가적인 회로가 필요하게 되어 비용이 상승하는 문제점이 있다.
또한, 트라이악의 온오프 주기를 달리하여 스트로크를 제어하는 경우에 위상각이 변화되어 파워펙터에 영향을 미치게 되므로 이를 보정하기 위한 부가회로가 필요하게 되어 비용이 상승하는 문제점이 있다.
또한, 순간적인 전압을 상승에 의해 트라이악이 손상될뿐만 아니라 그 트라이악에 의해 발생하는 고조파 성분으로 인하여 리니어 컴프레샤의 효율이 저하되는 문제점이 있다.
따라서, 상기와 같은 문제점을 감안하여 창안한 본 발명은 부하 및 전압변동에 대응하기 위해 모터 자체의 용량인 코일의 권선수를 자체적으로 변화시키도록 한 리니어컴프레샤의 용량 가변형 모터를 제공함에 그 목적이 있다.
상기와 같은 목적을 달성하기 위한 본 발명은 코일의 권선수를 제어하여 부하 및 전압변동에 대응하는 리니어 컴프레샤에 있어서, 상기 모터에 감겨지는 코일을 메인 코일과 다수의 서브 코일로 구분하고, 상기 메인코일과 다수의 서브코일의 각각의 접속단에 다수의 릴레이를 접속하여 구성한 것을 특징으로 한다.
이하, 본 발명에 의한 리니어컴프레샤의 용량 가변형 모터에 대한 작용 및 효과를 첨부한 도면을 참조하여 상세히 설명한다.
도2는 본 발명 리니어 컴프레샤의 용량 가변형 모터에 대한 실시예의 구성을 보인 개략도로서, 이에 도시한 바와같이 모터(M)에 감겨지는 코일을 메인 코일(MC1)과 제1~제4 서브 코일(SC1~SC4)로 구분하고, 전압의 변동 및 부하의 변동에 따라 온/오프되어 모터(M) 자체의 권선비를 변화시켜 모터 용량을 가변하도록 상기 메인코일(MC1)과 제1~제4 서브코일(SC1~SC4)의 접속단에 제1~제5 릴레이 (RY1~RY5)를 접속하여 구성하며, 이와같은 본 발명의 동작을 설명한다.
먼저, 리니어 컴프레샤의 모터(M)에 감겨지는 코일의 권선수(N)는 모터상수와 비례관계가 있으므로 일정 입력전압 인가시 스트로크와 코일의 권선수(N)는 반비례하게 되는데 이를 수식으로 표현하면 아래와 같다.
따라서, 본 발명은 상기와 같은 특성을 이용하여 모터용량을 가변시키기 위해 코일의 권선수(N)를 제어하도록 하는 것이다.
즉, 모터(M)에 대부분의 코일을 메인코일(MC)로 감고, 나머지 제1,제2,제3,제4 서브코일(SC1,SC2,SC3,SC4)을 감은후, 상기 메인코일(MC)과 제1 서브코일(SC1) 사이에 제1 릴레이(RY1)를 접속하고, 상기 제1 서브코일(SC1)과 제2 서브코일(SC2) 사이에 제2 릴레이(RY2)를 접속하며, 상기 제2 서브코일(SC2)과 제3 서브코일(SC3) 사이에 제3 릴레이(RY3)를 접속하고, 상기 제3 서브코일(SC3)과 제4 서브코일(SC4) 사이에 제4 릴레이(RY4)를 접속하며 그 제4 서브코일(SC4)의 출력단에 제5 릴레이(RY5)를 접속한후, 상기 제1,제2,제3 제4,제5 릴레이(RY1),(RY2),(RY3) ,(RY4),(RY5)를 전압의 변동 및 부하의 변동에 따라 온/오프시켜 모터(M) 자체의 권선비를 변화시켜 모터용량을 가변한다.
만약, 일정전압이 인가되는 상황에서, 가장 큰 스트로크를 발생시키려면, 제1 릴레이(RY1)를 온시키고 제2,제3,제4,제5 릴레이(RY2),(RY3),(RY4),(RY5)는 오프시켜 모터코일의 권선수를 줄이면 되고, 반대로 가장 작은 스크로크를 발생시키려면, 제 5릴레이(RY5)를 온시키고 제1,제2,제3,제4 릴레이(RY1),(RY2),(RY3) ,(RY4)를 오프시켜 모터코일의 권선수를 늘리면 된다.
여기서, 상기 제1,제2,제3,제4,제5 릴레이(RY1),(RY2),(RY3),(RY4),(RY5)는, 전압의 변동 및 부하변동에 대응되는 스트로크를 발생시키기 위한 마이크로컴퓨터(미도시)의 제어신호에 의해 온/오프 제어된다.
여기서, 도3은 본 발명을 냉방 에어컨에 적용할 경우, 냉력과 권선수의 관계를 보인도로서, 권선수(N)에 따라 냉력이 일정부분에서 거의 선형적으로 반비례하는 것을 알 수 있다.
다시 말해서, 본 발명은 일정 입력전압 인가시 스트로크와 코일의 권선수(N)는 거의 선형적으로 반비례하는 특성을 이용하여, 상기 메인코일(MC)과 다수의 서브코일(SC) 사이에 다수의 릴레이(RY)를 접속한후, 그 다수의 릴레이(RY)를 전압의 변동 및 부하의 변동에 따라 온/오프시켜 모터 자체의 권선수(N)를 변화시킴으로써 모터용량을 가변한다.
이상에서 상세히 설명한 바와같이 본 발명은 모터에 감겨지는 코일을 메인코일과 다수의 서브 코일로 구분하여 스트로크제어를 위해 모터자체의 용량인 코일의 권선수를 자체적으로 변화시킴으로서 전압의 변동 및 부하변동에 효율적으로 대응할 수 있는 효과가 있다.
도1은 일반적인 리니어 컴프레샤의 운전제어장치에 대한 구성을 보인 블록도.
도2는 본 발명 리니어 컴프레샤의 용량가변형 모터에 대한 실시예의 구성을 보인 개략도.
도3은 본 발명을 냉방 에어컨에 적용할 경우에 대한 냉력과 권선수의 관계를 보인도.
*****도면의 주요부분에 대한 부호의 설명*****
MC:메인코일 SC1~SC4:서브코일
RY1~RY5:릴레이

Claims (2)

  1. 리니어 컴프레샤의 모터에 인가되는 스트로크전압을 제어하여 부하 및 전압변동에 대응하는 리니어 컴프레샤에 있어서,
    상기 리니어 컴프레샤의 모터에 감겨지는 코일을 메인 코일과 다수의 서브 코일로 구분하고, 상기 메인코일과 다수의 서브코일의 각각의 접속단에 다수의 릴레이를 접속하여 구성한 것을 특징으로 하는 리니어 컴프레샤의 용량 가변형 모터.
  2. 제1 항에 있어서, 다수의 릴레이는, 전압 및 부하의 변동에 따라 모터 용량을 가변시키도록 온/오프 제어되는 것을 특징으로 하는 리니어 컴프레샤의 용량 가변형 모터.
KR10-2000-0082914A 2000-12-27 2000-12-27 리니어 컴프레샤의 용량가변형 모터 KR100498302B1 (ko)

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KR10-2000-0082914A KR100498302B1 (ko) 2000-12-27 2000-12-27 리니어 컴프레샤의 용량가변형 모터
US09/983,942 US6841967B2 (en) 2000-12-27 2001-10-26 Coil winding number variable type motor and coil winding number varying method for varying cooling and heating capacity of reciprocating compressor
CNB011349042A CN1242546C (zh) 2000-12-27 2001-11-12 线圈绕组数可变式电动机及线圈绕组数改变方法
BRPI0105356A BRPI0105356B1 (pt) 2000-12-27 2001-11-21 motor do tipo com quantidade variável de enrolamentos de bobina e método para variação de uma capacidade elétrica de um motor do tipo com quantidade variável de enrolamentos de bobina
DE10158994.8A DE10158994B4 (de) 2000-12-27 2001-11-30 Motortyp mit variabler Spulenwicklungszahl und Verfahren zur Veränderung der Spulenwicklungsanzahl zum Regeln einer Kühl- und Heizkapazität eines Kolbenverdichters
IT2001MI002593A ITMI20012593A1 (it) 2000-12-27 2001-12-11 Motore del tipo a numero di avvolgimenti variabile e procedimento pervariare il numero di avvolgimenti onde variare la capacita' di raffred
JP2001384899A JP3691789B2 (ja) 2000-12-27 2001-12-18 往復動式圧縮機用コイル巻線数変更型モータ及びコイル巻線数変更方法

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US20020113565A1 (en) 2002-08-22
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