KR100608669B1 - Driving control apparatus and method for reciprocating compressor - Google Patents

Driving control apparatus and method for reciprocating compressor Download PDF

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KR100608669B1
KR100608669B1 KR1020040040447A KR20040040447A KR100608669B1 KR 100608669 B1 KR100608669 B1 KR 100608669B1 KR 1020040040447 A KR1020040040447 A KR 1020040040447A KR 20040040447 A KR20040040447 A KR 20040040447A KR 100608669 B1 KR100608669 B1 KR 100608669B1
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compressor
commercial
triac
voltage
motor
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KR1020040040447A
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KR20050115481A (en
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박경배
홍언표
최기철
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엘지전자 주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston 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
    • F04B35/04—Piston 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/08—Compressors specially adapted for separate outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/025—Motor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2207/00—External parameters
    • F04B2207/04—Settings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/024—Compressor control by controlling the electric parameters, e.g. current or voltage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/923—Specific feedback condition or device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/935—Specific application:
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

본 발명은 왕복동식 압축기의 운전제어장치 및 방법에 관한 것으로, 압축기 용량저감 운전의 경우에, 압축 행정시는 상용교류전원의 반파는 다이오드를 통해 그대로 모터에 인가하고, 그 상용교류전원의 나머지 반파는, 흡입 행정시 용량저감 정도에 따라 온주기가 단축된 트라이악을 통해 모터에 인가함으로써, 피스톤의 하사행정을 감소시키도록 한 것이다. 이를 위하여 본 발명은 왕복동식 압축기에 있어서, 상용교류전원의 반파만을 위상 제어하기 위한 스위칭제어신호를 출력하는 마이크로컴퓨터와; 상기 마이크로컴퓨터의 스위칭제어신호에 의해 도통되어, 상용교류전원의 양의 전압만을 소정 크키 만큼 통과시키는 트라이악과; 상기 트라이악에 병렬 연결되어, 상용교류전압의 반파전압을 통과시키는 다이오드와; 상기 트라이악을 통해 입력되는 양의 전압에 의해, 피스톤의 흡입행정을 실행하고, 상기 다이오드를 통해 입력되는 음의전압에 의해, 피스톤의 압축행정이 실행되는 압축기를 포함하여 구성한다.The present invention relates to an operation control apparatus and a method of a reciprocating compressor, in the case of a compressor capacity reducing operation, the half wave of the commercial AC power is applied to the motor as it is through the diode in the compression stroke, and the remaining half of the commercial AC power is applied. In order to reduce the bottom stroke of the piston by applying to the motor through the triac shortened the on-cycle according to the capacity reduction during the suction stroke. To this end, the present invention provides a reciprocating compressor comprising: a microcomputer for outputting a switching control signal for controlling phase of only half wave of a commercial AC power supply; A triac conducting by a switching control signal of the microcomputer to pass only a positive voltage of a commercial AC power supply by a predetermined magnitude; A diode connected in parallel with the triac and passing a half-wave voltage of a commercial AC voltage; And a compressor that performs the suction stroke of the piston by the positive voltage input through the triac, and the compression stroke of the piston by the negative voltage input through the diode.

Description

왕복동식 압축기의 운전제어장치{DRIVING CONTROL APPARATUS AND METHOD FOR RECIPROCATING COMPRESSOR}Driving control device of reciprocating compressor {DRIVING CONTROL APPARATUS AND METHOD FOR RECIPROCATING COMPRESSOR}

도1은 일반적인 왕복동식 압축기의 운전제어장치에 대한 구성을 보인 블록도.Figure 1 is a block diagram showing the configuration for the operation control device of a typical reciprocating compressor.

도2는 도1에 있어서, 압축기 용량 저감시의 피스톤 행정을 보인도.FIG. 2 is a diagram showing a piston stroke in reducing compressor capacity in FIG. 1; FIG.

도3은 본 발명 왕복동식 압축기의 운전제어장치에 대한 구성을 보인 회로도.Figure 3 is a circuit diagram showing a configuration for the operation control device of the reciprocating compressor of the present invention.

도4는 도3에 있어서, 압축기 용량 저감시의 피스톤 행정을 보인도.Fig. 4 is a diagram showing the piston stroke at the time of reducing the compressor capacity in Fig. 3;

도5는 본 발명 왕복동식 압축기의 운전제어방법에 대한 동작흐름도.5 is an operation flow chart for the operation control method of the reciprocating compressor of the present invention.

***** 도면의 주요부분에 대한 부호의 설명 ********** Explanation of symbols for main parts of drawing *****

10:전기회로부 20:전류검출부10: electric circuit unit 20: current detection unit

30:전압검출부 40:마이크로컴퓨터30: voltage detector 40: microcomputer

D1:다이오드 Tr1:트라이악D1: Diode Tr1: Triac

본 발명은 왕복동식 압축기의 운전제어장치 및 방법에 관한 것으로, 특히 압축기 용량저감 운전의 경우에, 압축 행정시는 상용교류전원의 반파는 다이오드를 통해 그대로 모터에 인가하고, 그 상용교류전원의 나머지 반파는, 흡입 행정시 용량저감 정도에 따라 온주기가 단축된 트라이악을 통해 모터에 인가함으로써, 피스톤의 하사행정을 감소시키도록 한 왕복동식 압축기의 운전제어장치 및 방법에 관한 것이다.The present invention relates to an operation control apparatus and method for a reciprocating compressor. In particular, in the case of a compressor capacity reducing operation, a half wave of a commercial AC power is applied to a motor as it is through a diode during a compression stroke, and the rest of the AC power is applied. The half wave relates to an operation control apparatus and method for a reciprocating compressor which reduces the bottom stroke of a piston by applying it to a motor through a triac whose on-cycle is shortened in accordance with the degree of capacity reduction during the suction stroke.

일반적으로,상기 왕복동식 압축기가 냉장고나 에어컨에 사용될 경우에, 상기 왕복동식 압축기에 입력되는 스트로크 전압(Stroke Voltage)을 가변 시킴에 따라 상기 왕복동식 압축기의 압축 비(compression ratio)를 가변 할 수 있어 냉력(Freezing Capacity)을 제어할 수 있다.In general, when the reciprocating compressor is used in a refrigerator or an air conditioner, the compression ratio of the reciprocating compressor may be varied by varying the stroke voltage input to the reciprocating compressor. Freezing Capacity can be controlled.

삭제delete

도1은 일반적인 왕복동식 압축기의 운전제어장치에 대한 구성을 보인 블록도로서, 이에 도시된 바와같이 스트로크 지령치에 따라, 내부 모터에 인가되는 전압에 의해, 피스톤이 상하운동으로 스트로크를 가변시켜 냉력을 조절하는 왕복동식 압축부(L.COMP)와; 인가전압에 의해 스트로크를 증가시킴에 따라, 상기 왕복동식 압축부(L.COMP)에 발생하는 전압을 검출하는 전압검출부(30)와; 인가전압에 의해 스트로크를 증가시킴에 따라, 상기 왕복동식 압축부(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 왕복동식 압축부(L.COMP)에 전압을 인가하는 전기회로부 (10)로 구성되고, 이와같이 구성된 종래 장치의 동작을 설명한다.1 is a block diagram showing a configuration of an operation control device of a general reciprocating compressor. As shown in FIG. 1, the piston changes the stroke in vertical motion by the voltage applied to the internal motor according to the stroke command value. A reciprocating compression unit (L.COMP) for adjusting; A voltage detector (30) which detects a voltage generated in the reciprocating compression section (L.COMP) as the stroke is increased by an applied voltage; A current detector 20 which detects a current applied to the reciprocating compressor L.COMP as the stroke is increased by an applied voltage; A microcomputer (40) for calculating a stroke from the voltage and current detected by the voltage detector (30) and the current detector (20), comparing the stroke with a stroke command value, and outputting a switching control signal accordingly; In accordance with the switching control signal of the microcomputer 40, it consists of an electrical circuit section 10 for interrupting the AC power to the triac (Tr1) to apply a voltage to the reciprocating compression section (L.COMP), and thus The operation of the conventional apparatus will be described.

먼저, 왕복동식 압축부(L.COMP)는 사용자에 의해 설정된 스트로크 지령치에 따른 인가전압에 의해, 피스톤이 상하 운동되고, 이로 인해 스트로크가 가변되어 냉력을 조절한다.First, the reciprocating compression section (L.COMP), the piston is moved up and down by the applied voltage according to the stroke command value set by the user, thereby the stroke is variable to adjust the cooling force.

한편, 전기회로부(10)의 트라이악(Tr1)은 마이크로컴퓨터(40)의 스위칭제어신호에 의해 턴온 주기가 길어짐에 의해 스트로크가 증가되는데, 이때 왕복동식 압축부(L.COMP)의 모터(M)에 인가되는 인가전압과 전류를 각기 전압검출부(30)와 전류검출부(20)에서 검출하여 이를 마이크로컴퓨터(40)에 인가한다.Meanwhile, the stroke of the triac Tr1 of the electric circuit unit 10 is increased due to a long turn-on period due to the switching control signal of the microcomputer 40, wherein the motor M of the reciprocating compressor L.COMP is increased. The voltage and the current applied to the) are detected by the voltage detector 30 and the current detector 20, and applied to the microcomputer 40.

그러면, 상기 마이크로컴퓨터(40)는 상기 전압검출부(30)와 전류검출부(20)로부터 검출된 인가전압과 전류를 이용하여 스트로크를 계산한후, 이 스트로크를 스트로크지령치와 비교하여 그에 따라 스위칭제어신호를 출력한다.Then, the microcomputer 40 calculates a stroke using the applied voltage and current detected from the voltage detector 30 and the current detector 20, and compares the stroke with the stroke command value and accordingly switches the control signal. Outputs

즉, 상기 마이크로컴퓨터(40)는 계산된 스트로크가 스트로크 지령치 보다 작으면, 트라이악(Tr1)의 온주기를 길게 하는 스위칭제어신호를 출력하여 왕복동식 압축부(L.COMP)에 인가되는 전압을 증가시킨다.That is, when the calculated stroke is smaller than the stroke command value, the microcomputer 40 outputs a switching control signal for lengthening the on-cycle of the triac Tr1, thereby converting the voltage applied to the reciprocating compressor L.COMP. Increase.

상술한 바와 달리, 상기 마이크로컴퓨터(40)는 계산된 스트로크가 스트로크 지령치 보다 크면, 트라이악(Tr1)의 온주기를 짧게 하는 스위칭제어신호를 출력하여 왕복동식 압축부(L.COMP)에 인가되는 전압을 감소시킨다.Unlike the above, when the calculated stroke is larger than the stroke command value, the microcomputer 40 outputs a switching control signal for shortening the on-cycle of the triac Tr1 and is applied to the reciprocating compression unit L.COMP. Reduce the voltage.

상술한 종래 왕복동식 압축기는, 위상 제어를 통하여 모터 양단전압의 크기 를 변경하여 피스톤의 스트로크를 제어함으로써, 압축기의 용량을 가변하는데, 이때 압축 행정시 나 흡입 행정시, 트라이악을 제어하는 전압 제어각이 동일하여, 압축기 용량 저감시, 도2와 같이, 압축 손실 및 재팽창 손실이 발생하는 문제점이 있다.In the conventional reciprocating compressor described above, the capacity of the compressor is varied by controlling the stroke of the piston by changing the magnitude of the voltage across the motor through the phase control, wherein the compression control, the suction stroke, and the triac control the triac. When the angles are the same, there is a problem in that compression loss and re-expansion loss occur as shown in FIG.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 압축기 용량저감 운전의 경우에, 압축 행정시는 상용교류전원의 반파는 다이오드를 통해 그대로 모터에 인가하고, 그 상용교류전원의 나머지 반파는, 흡입 행정시 용량저감 정도에 따라 온주기가 단축된 트라이악을 통해 모터에 인가함으로써, 피스톤의 하사행정을 감소시키도록 한 왕복동식 압축기의 운전제어장치 및 방법을 제공함에 그 목적이 있다.The present invention has been made in order to solve the above problems, in the case of compressor capacity reduction operation, the half wave of the commercial AC power is applied to the motor as it is through the diode during the compression stroke, and the remaining half of the commercial AC power is It is an object of the present invention to provide an operation control apparatus and method for a reciprocating compressor to reduce the bottom stroke of a piston by applying to a motor through a triac with a short on-cycle according to the capacity reduction during the suction stroke.

상기와 같은 목적을 달성하기 위한 본 발명은,왕복동식 압축기에 있어서, 상용교류전원의 반파만을 위상 제어하기 위한 스위칭제어신호를 출력하는 마이크로컴퓨터와; 상기 마이크로컴퓨터의 스위칭제어신호에 의해 도통되어, 상용교류전원의 양의 전압만을 소정 크키 만큼 통과시키는 트라이악과; 상기 트라이악에 병렬 연결되어, 상용교류전압의 반파전압을 통과시키는 다이오드와; 상기 트라이악을 통해 입력되는 양의 전압에 의해, 피스톤의 흡입행정을 실행하고, 상기 다이오드를 통해 입력되는 음의전압에 의해, 피스톤의 압축행정이 실행되는 압축기를 포함하는 것을 특징으로 한다.The present invention for achieving the above object is a reciprocating compressor comprising: a microcomputer for outputting a switching control signal for controlling the phase of the half wave of the commercial AC power; A triac conducting by a switching control signal of the microcomputer to pass only a positive voltage of a commercial AC power supply by a predetermined magnitude; A diode connected in parallel with the triac and passing a half-wave voltage of a commercial AC voltage; The compressor may be configured to perform a suction stroke of the piston by a positive voltage input through the triac, and to perform a compression stroke of the piston by a negative voltage input through the diode.

상기와 같은 목적을 달성하기 위한 본 발명은, The present invention for achieving the above object,

모터에 인가되는 전압의 위상제어를 통해 운전 제어되는 왕복동식압축기에 있어서, In the reciprocating compressor which is operated and controlled by the phase control of the voltage applied to the motor,

사용자에 의해, 압축기 100% 용량운전이 선택되면, 상용교류전원의 반파는 다이오드를 통해 그대로 모터에 인가하고, 그 상용교류전원의 나머지 반파는, 트라이악을 통해 위상제어하여 모터에 인가하는 제1 과정과;When the compressor 100% capacity operation is selected by the user, the first half wave of the commercial AC power supply is applied to the motor as it is through the diode, and the remaining half wave of the commercial AC power supply is applied to the motor by phase controlling through the triac. Process;

상기 압축기 100% 용량운전으로 압축기를 동작시키다가, 압축기 용량저감 운전이 발생하면, 상용교류전원의 반파는 다이오드를 통해 그대로 모터에 인가하고, 그 상용교류전원의 나머지 반파는, 온주기가 단축된 트라이악을 통해 모터에 인가하는 제2 과정으로 수행함을 특징으로 한다.When the compressor is operated in the compressor at 100% capacity operation, and the compressor capacity reduction operation occurs, the half wave of the commercial AC power is applied to the motor as it is through the diode, and the remaining half of the commercial AC power is shortened in the on-cycle. Characterized in that the second process to apply to the motor through the triac.

이하, 본 발명에 의한 왕복동식 압축기의 운전제어장치 및 방법에 대한 작용 과 효과를 첨부한 도면을 참조하여 설명한다.Hereinafter, with reference to the accompanying drawings the operation and effect of the operation control apparatus and method of the reciprocating compressor according to the present invention.

도3은 본 발명 왕복동식 압축기의 운전제어장치에 대한 실시예의 구성을 보인 회로도이다.Figure 3 is a circuit diagram showing the configuration of an embodiment of the operation control device of the reciprocating compressor of the present invention.

도3에 도시한 바와같이, 본 발명의 일반적인 구성은 종래 도1과 동일하고, 다만, 왕복동식 압축기에 있어서, 상용교류전원의 반파만을 위상 제어하기 위한 스위칭제어신호를 출력하는 마이크로컴퓨터(40)와; 상기 마이크로컴퓨터(40)의 스위칭제어신호에 의해 도통되어, 상용교류전원의 양의 전압만을 소정 크키 만큼 통과시키는 트라이악(Tr1)과; 상기 트라이악(Tr1)에 병렬 연결되어, 상용교류전압의 반파전압을 통과시키는 다이오드(D1)와; 상기 트라이악(Tr1)을 통해 입력되는 양의 전압에 의해, 피스톤의 흡입행정을 실행하고, 상기 다이오드(D1)를 통해 입력되는 음의전압에 의해, 피스톤의 압축행정이 실행되는 압축기(L.Comp)를 포함하여 구성하며, 이와같은 본 발명의 동작을 설명한다.As shown in Fig. 3, the general configuration of the present invention is the same as that of Fig. 1, except that the microcomputer 40 outputs a switching control signal for phase control of only half wave of a commercial AC power supply in a reciprocating compressor. Wow; A triac Tr1 conducting by the switching control signal of the microcomputer 40, and passing only a positive voltage of a commercial AC power supply by a predetermined amount; A diode (D1) connected in parallel with the triac (Tr1) and passing a half-wave voltage of a commercial AC voltage; Compressor (L.) in which the suction stroke of the piston is executed by the positive voltage input through the triac (Tr1), and the compression stroke of the piston is performed by the negative voltage input through the diode (D1). Comp), including the operation of the present invention, will be described.

먼저, 사용자에 의해, 압축기 용량 100% 운전이 선택되면. 마이크로컴퓨터 (40)는 압축기 용량 100% 운전을 위한 스위칭제어신호를 트라이악(Tr1)에 인가한다.First, when the compressor capacity 100% operation is selected by the user. The microcomputer 40 applies a switching control signal to the triac Tr1 for operation of 100% of the compressor capacity.

이때, 상기 마이크로컴퓨터(40)는, 상용교류전원의 음의 전압을 트라이악 (Tr1)을 통해 통과시키기 않도록 그 트라이악(Tr1)의 음의 전압이 통과되는 시점에 트라이악(Tr1)을 오프시키도록 제어한다.At this time, the microcomputer 40 turns off the triac Tr1 at the time when the negative voltage of the triac Tr1 passes so that the negative voltage of the commercial AC power supply passes through the triac Tr1. To control it.

이에 따라, 상용교류전원의 반파는 다이오드(D1)를 통해 그대로 모터에 인가되고 , 그 상용교류전원의 나머지 반파는, 상기 마이크로컴퓨터(40)의 스위칭제어신호에 의해 온/오프되는 트라이악(Tr1)을 통해 위상 제어되어 모터에 인가된다.Accordingly, the half wave of the commercial AC power is applied to the motor as it is through the diode D1, and the other half of the commercial AC power is turned on / off by the switching control signal of the microcomputer 40. Phase control is applied to the motor.

만약, 압축기 운전용량이 저감되면, 상기 마이크로컴퓨터(40)는, 상용교류전원의 양의 전압을 통과시키기 위한 스위칭제어신호의 온주기를 단축시키도록 제어하고, 이에 따라, 상용교류전원의 반파는 다이오드(D1)를 통해 그대로 모터에 인가되며, 상기 상용교류전원의 나머지 반파는, 상기 온주기가 단축된 트라이악(Tr1)을 통해 모터에 인가되어, 도4와 같이 피스톤의 하사행정을 감소시킨다.If the compressor operation capacity is reduced, the microcomputer 40 controls to shorten the on-period of the switching control signal for passing the positive voltage of the commercial AC power supply, so that the half wave of the commercial AC power supply is reduced. It is applied to the motor as it is through the diode (D1), the remaining half-wave of the commercial AC power is applied to the motor through the triac (Tr1) is shortened the on-cycle, reducing the bottom stroke of the piston as shown in FIG. .

보다 상세하게, 도5를 참조하여 본 발명을 설명하면, 우선 사용자에 의해, 압축기 100% 용량운전이 선택되면(SP1), 상용교류전원의 반파는 다이오드(D1)를 통해 그대로 모터에 인가되고, 그 상용교류전원의 나머지 반파는, 트라이악(Tr1)을 통해 위상 제어되어 모터에 인가된다(SP2).In more detail, when the present invention is described with reference to FIG. 5, first, when a compressor 100% capacity operation is selected (SP1), a half wave of a commercial AC power is applied to a motor as it is through a diode D1, The remaining half wave of the commercial AC power supply is phase-controlled through the triac Tr1 and applied to the motor (SP2).

이렇게, 상기 압축기 100% 용량운전으로 압축기를 동작시키다가, 압축기 용량저감 운전이 발생하면(SP3), 상용교류전원의 반파는 다이오드(D1)를 통해 그대로 모터에 인가하고, 그 상용교류전원의 나머지 반파는, 온주기가 단축된 트라이악 (Tr1)을 통해 모터에 인가하는데(SP4,SP5), 즉 압축기의 압축행정시, 다이오드를 통해 정류된 음의 전압을 그대로 모터에 인가하고(SP4), 압축기의 흡입행정시, 용량 저감 정도에 따라, 트라이악(Tr1)의 온주기를 단축시킨후, 그 트라이악(Tr1)을 통해 위상제어되어, 크기가 줄어든 양의 전압이 모터에 인가된다(SP5).When the compressor is operated in the compressor at 100% capacity operation, and a compressor capacity reduction operation occurs (SP3), the half wave of the commercial AC power is applied to the motor as it is through the diode D1, and the rest of the commercial AC power is applied. The half wave is applied to the motor through the triac Tr1 having a shorter on-cycle (SP4, SP5), that is, during compression of the compressor, the negative voltage rectified through the diode is applied to the motor as it is (SP4), During the suction stroke of the compressor, the on-cycle of the triac Tr1 is shortened according to the degree of capacity reduction, and then phase-controlled through the triac Tr1 so that a positive voltage of reduced magnitude is applied to the motor (SP5). ).

즉, 본 발명은, 도4와 같이, 압축기 100% 용량운전이 선택되면, 압축 행정시 상용교류전원의 반파는 다이오드(D1)를 통해 그대로 모터에 인가되고, 흡입 행정시, 상용교류전원의 나머지 반파는, 트라이악(Tr1)을 통해 위상제어하여 모터에 인가되며, 압축기 용량저감 운전이 발생하면, 압축 행정시 상용교류전원의 반파는 다이오드(D1)를 통해 그대로 모터에 인가되고, 흡입 행정시 상용교류전원의 나머지 반파는, 온주기가 단축된 트라이악(Tr1)을 통해 모터에 인가되도록 한 것이다.That is, in the present invention, as shown in FIG. 4, when the compressor 100% capacity operation is selected, the half wave of the commercial AC power supply during the compression stroke is applied to the motor as it is through the diode D1, and the rest of the commercial AC power supply during the suction stroke. The half wave is applied to the motor by phase control through the triac Tr1, and when the compressor capacity reduction operation occurs, the half wave of the commercial AC power is applied to the motor as it is through the diode D1 during the compression stroke. The other half wave of the commercial AC power is to be applied to the motor through the triac Tr1 having a shorter on-cycle.

상기 본 발명의 상세한 설명에서 행해진 구체적인 실시 양태 또는 실시예는 어디까지나 본 발명의 기술 내용을 명확하게 하기 위한 것으로 이러한 구체적 실시예에 한정해서 협의로 해석해서는 안되며, 본 발명의 정신과 다음에 기재된 특허 청구의 범위내에서 여러가지 변경 실시가 가능한 것이다.The specific embodiments or examples made in the detailed description of the present invention are intended to clarify the technical contents of the present invention to the extent that they should not be construed as limited to these specific embodiments and should not be construed in consultation. Various changes can be made within the scope of.

즉,이상에서 상세히 설명한 바와같이 본 발명은, 압축기 용량저감 운전이 발 생하면, 압축 행정시는 상용교류전원의 반파는 다이오드를 통해 그대로 모터에 인가하고, 그 상용교류전원의 나머지 반파는, 흡입 행정시 용량저감 정도에 따라 온주기가 단축된 트라이악을 통해 모터에 인가함으로써, 피스톤의 하사행정을 감소시켜 압축손실 및 재팽창손실을 제거하는 효과가 있다.That is, as described in detail above, in the present invention, when the compressor capacity reduction operation occurs, the half wave of the commercial AC power is applied to the motor as it is through the diode during the compression stroke, and the remaining half of the commercial AC power is sucked in. By applying to the motor through the triac shortened the on-cycle according to the capacity reduction during the stroke, there is an effect of reducing the lower stroke of the piston to eliminate the compression loss and re-expansion loss.

Claims (6)

왕복동식 압축기에 있어서,In a reciprocating compressor, 압축기 용량에 따라, 상용교류전원의 반파만을 위상 제어하기 위한 스위칭제어신호를 출력하는 마이크로컴퓨터와;A microcomputer for outputting a switching control signal for phase-controlling only half-wave of the commercial AC power supply according to the compressor capacity; 상기 마이크로컴퓨터의 스위칭제어신호에 의해 도통되어, 상용교류전원의 양반파전압을 소정 크키 만큼 통과시키는 트라이악과;A triac conducting by the switching control signal of the microcomputer, and passing the half-wave voltage of the commercial AC power supply by a predetermined amount; 상기 트라이악에 병렬 연결되어, 상용교류전압의 반파전압을 통과시키는 다이오드와;A diode connected in parallel with the triac and passing a half-wave voltage of a commercial AC voltage; 상기 트라이악을 통해 입력되는 제어 전압에 의해, 피스톤의 흡입행정을 실행하고, 상기 다이오드를 통해 입력되는 제어전압에 의해, 피스톤의 압축행정이 실행되는 압축기를 포함하는 것을 특징으로 하는 왕복동식 압축기의 운전제어장치.And a compressor configured to perform a suction stroke of the piston by a control voltage input through the triac, and to perform a compression stroke of the piston by a control voltage input through the diode. Operation control device. 제1 항에 있어서, 마이크로컴퓨터는,The method of claim 1, wherein the microcomputer, 압축기 용량 저감 운전시, 상용교류전원의 제어 전압을 통과시키기 위한 스위칭제어신호의 온주기를 단축시켜 피스톤의 하사행정을 감소시키도록 제어하는 것을 특징으로하는 왕복동식 압축기의 운전제어장치.An operation control apparatus for a reciprocating compressor, characterized in that during the capacity reduction operation of the compressor, the on-cycle of the switching control signal for passing the control voltage of the commercial AC power supply is shortened to reduce the lower stroke of the piston. 제1 항에 있어서, 다이오드는,The method of claim 1, wherein the diode 상기 트라이악에 역방향으로 병렬연결되어, 반파 전압만을 통과시키는 것을 특징으로 하는 왕복동식 압축기의 운전제어장치.It is connected in parallel to the triac in the reverse direction, the operation control device of the reciprocating compressor, characterized in that passing only half-wave voltage. 제1 항에 있어서, 트라이악은The method of claim 1, wherein the triac is 스위칭제어신호에 의해, 상용교류전원의 전압의 크기를 가변하는 것을 특징으로 하는 왕복동식 압축기의 운전제어장치.An operation control apparatus for a reciprocating compressor, characterized by varying the magnitude of the voltage of the commercial AC power supply by a switching control signal. 모터에 인가되는 전압의 위상제어를 통해 운전 제어되는 왕복동식압축기에 있어서, In the reciprocating compressor which is operated and controlled by the phase control of the voltage applied to the motor, 사용자에 의해, 압축기 100% 용량운전이 선택되면, 상용교류전원의 반파는 다이오드를 통해 그대로 모터에 인가하고, 그 상용교류전원의 나머지 반파는, 트라이악을 통해 위상제어하여 모터에 인가하는 제1 과정과;When the compressor 100% capacity operation is selected by the user, the first half wave of the commercial AC power supply is applied to the motor as it is through the diode, and the remaining half wave of the commercial AC power supply is applied to the motor by phase controlling through the triac. Process; 상기 압축기 100% 용량운전으로 압축기를 동작시키다가, 압축기 용량저감 운전이 발생하면, 상용교류전원의 반파는 다이오드를 통해 그대로 모터에 인가하고, 그 상용교류전원의 나머지 반파는, 온주기가 단축된 트라이악을 통해 모터에 인가하는 제2 과정으로 수행함을 특징으로 하는 왕복동식 압축기의 운전제어방법.When the compressor is operated in the compressor at 100% capacity operation, and the compressor capacity reduction operation occurs, the half wave of the commercial AC power is applied to the motor as it is through the diode, and the remaining half of the commercial AC power is shortened in the on-cycle. Operation control method of the reciprocating compressor, characterized in that performed in a second process applied to the motor through the triac. 제5 항에 있어서, 제2 과정은, The method of claim 5, wherein the second process, 압축기의 압축행정시, 다이오드를 통해 정류된 전압을 그대로 모터에 인가하는 단계와;Applying the voltage rectified through the diode to the motor as it is during the compression stroke of the compressor; 압축기의 흡입행정시, 용량 저감 정도에 따라, 트라이악의 온주기를 단축시 킨후, 그 트라이악을 통해 위상제어되어, 크기가 줄어든 전압을 모터에 인가하는 단계를 포함하는 것을 특징으로 하는 왕복동식 압축기의 운전제어방법.Reducing the on-cycle period of the triac according to the capacity reduction degree during the compressor stroke, and phase-controlled through the triac, the reciprocating compressor comprising the step of applying a reduced voltage to the motor Operation control method.
KR1020040040447A 2004-06-03 2004-06-03 Driving control apparatus and method for reciprocating compressor KR100608669B1 (en)

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