KR100451225B1 - Driving control method for refrigerator using ciprocating compressor - Google Patents

Driving control method for refrigerator using ciprocating compressor Download PDF

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Publication number
KR100451225B1
KR100451225B1 KR10-2002-0003953A KR20020003953A KR100451225B1 KR 100451225 B1 KR100451225 B1 KR 100451225B1 KR 20020003953 A KR20020003953 A KR 20020003953A KR 100451225 B1 KR100451225 B1 KR 100451225B1
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South Korea
Prior art keywords
refrigerator
reciprocating compressor
operating
frequency
operating frequency
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KR10-2002-0003953A
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Korean (ko)
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KR20030063704A (en
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김진동
김정우
송계영
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엘지전자 주식회사
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Priority to KR10-2002-0003953A priority Critical patent/KR100451225B1/en
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Publication of KR100451225B1 publication Critical patent/KR100451225B1/en

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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
    • 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
    • F04B49/12—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 by varying the length of stroke of the working members
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/04—Motor parameters of linear electric motors
    • F04B2203/0401—Current
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/04—Motor parameters of linear electric motors
    • F04B2203/0402—Voltage
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/04—Motor parameters of linear electric motors
    • F04B2203/0404—Frequency of the electric current
    • 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
    • F04B2207/01—Load in general
    • 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
    • F04B2207/046—Settings of length of piston stroke
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

본 발명은 왕복동식 압축기를 이용한 냉장고의 운전제어방법에 관한 것으로, 냉장고의 운전 단계별로 운전주파수를 가변시켜 냉장고의 효율을 향상시키도록 한 것이다. 이를 위하여 본 발명은 스트로크 지령치에 따른 인가 전압에 의해, 피스톤의 운동으로 스트로크를 가변시켜 냉력을 조절하는 왕복동식 압축기를 이용한 냉장고에 있어서, 초기 기동시, 왕복동식 압축기의 운전주파수를 정상 상태보다 소정 범위 만큼 상승시켜 운전하는 제1 과정과; 일정시간이 지나면, 상기 왕복동식 압축기를, 정상상태의 운전주파수로 운전시키면서, 현재 냉장고의 운전모드가 소전모드로 변경되었는지를 판단하는 제2 과정과; 상기 판단결과, 현재 냉장고의 운전모드가 소전모드로 변경되면 상기 왕복동식 압축기의 운전주파수를, 정상상태의 운전주파수보다 소정 범위 만큼 상승시켜 운전하는 제3 과정으로 이루어진다.The present invention relates to an operation control method of a refrigerator using a reciprocating compressor, and to improve the efficiency of the refrigerator by varying the operating frequency of each step of the refrigerator operation. To this end, the present invention is a refrigerator using a reciprocating compressor that adjusts the cooling power by varying the stroke by the movement of the piston by the applied voltage according to the stroke command value, the initial operating frequency of the reciprocating compressor at a predetermined state than the normal state A first process of driving by raising the range; After a predetermined time, a second process of determining whether the operation mode of the present refrigerator is changed to the power consumption mode while operating the reciprocating compressor at an operating frequency in a normal state; As a result of the determination, when the operation mode of the current refrigerator is changed to the power failure mode, a third process of operating by raising the operation frequency of the reciprocating compressor by a predetermined range from the operation frequency in the normal state is performed.

Description

왕복동식 압축기를 이용한 냉장고의 운전제어방법{DRIVING CONTROL METHOD FOR REFRIGERATOR USING CIPROCATING COMPRESSOR}Operation control method of refrigerator using reciprocating compressor {DRIVING CONTROL METHOD FOR REFRIGERATOR USING CIPROCATING COMPRESSOR}

본 발명은 왕복동식 압축기를 이용한 냉장고의 운전제어방법에 관한 것으로, 특히 냉장고와 주변환경의 변화에 따른 부하 변동에 능동적으로 대처하여 왕복동식 압축기가 항상 최적의 조건에서 운전되도록 한 왕복동식 압축기를 이용한 냉장고의 운전제어방법에 관한 것이다.The present invention relates to an operation control method of a refrigerator using a reciprocating compressor. In particular, the present invention relates to a method of controlling a refrigerator using a reciprocating compressor in which a reciprocating compressor is always operated under optimum conditions by actively dealing with load fluctuations caused by changes in the refrigerator and the surrounding environment. It relates to an operation control method of a refrigerator.

일반적인 왕복동식 압축기는, 다상의 고정자에 권취된 코일에 공급되는 전원을 스위칭소자를 이용하여 단속함으로써, 회전 토오크(TORQUE)를 발생시키게 되는데, 회전자와 고정자간의 여자상태를 순차적으로 가변시킴으로써, 자기 흡입력에 의하여 정방향 회전 토오크를 발생시킬 수 있다.In general, a reciprocating compressor generates a torque by interrupting the power supplied to a coil wound around a multi-phase stator by using a switching element. By sequentially changing the excitation state between the rotor and the stator, The forward rotational torque can be generated by the suction force.

만약, 특정 여자상태를 가변시키지 않을 때에는 일정 위치에서 회전자가 정지하도록 할 수 있으며, 최대 인덕턴스 형상을 기점으로 스위칭소자에 인가되는 입력펄스 신호의 위상을 제어함으로써 역회전력을 발생시킬 수 있는 다양한 구동제어가 가능함에 따라 방향 제어가 필요한 전자 제품들에 적용되어 사용되고 있다.If the specific excitation state is not changed, the rotor can be stopped at a predetermined position, and various drive control that can generate reverse power by controlling the phase of the input pulse signal applied to the switching element based on the maximum inductance shape. As is possible, it is applied to electronic products requiring direction control.

특히, 냉장고나 에어컨에 사용되는 왕복동식 압축기는, 모터에 인가되는 전압으로 압축비를 가변할 수 있고, 따라서 냉력(냉장고의 냉동능력 (Cooling volume), 왕복동식 압축기의 압축 체적(Volume)과 비례)을 사용자의 의도에 따라 가변하여 제어하는 장점이 있는 것으로, 이와 같은 왕복동식 압축기를 첨부한 도면을 참조하여 상세히 설명한다.In particular, a reciprocating compressor used in a refrigerator or an air conditioner can vary the compression ratio by a voltage applied to a motor, and thus the cooling force (the cooling volume of the refrigerator, proportional to the compression volume of the reciprocating compressor) It has the advantage of controlling to vary according to the user's intention, will be described in detail with reference to the accompanying drawings, such a reciprocating compressor.

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 스트로크를스트로크지령치와 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.

그러나, 상술한 바와같이 같이 동작하는 왕복동식 압축기는, 냉장고의 초기 기동시 과부하 운전에 따른 과도전류 발생으로 인하여 모터가 포화되고, 또한 과부하 운전시 대응속도가 늦어 효율이 저하되는 문제점이 있다.However, the reciprocating compressor operating as described above has a problem in that the motor is saturated due to the generation of the transient current due to the overload operation during the initial startup of the refrigerator, and the efficiency is lowered because the corresponding speed is slow during the overload operation.

또한, 냉장고 소전 모드 운전시, 스트로크 감소에 따라 효율이 저하되는 문제점이 있다.In addition, there is a problem in that the efficiency is lowered as the stroke is reduced during the refrigerator power saving mode operation.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 냉장고의 운전 단계별로 운전주파수를 가변시켜 냉장고의 효율을 향상시키도록 한 왕복동식 압축기를 이용한 냉장고의 운전제어방법을 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, and an object of the present invention is to provide an operation control method of a refrigerator using a reciprocating compressor to improve the efficiency of the refrigerator by varying the operating frequency of each step of the refrigerator. .

도1은 종래 왕복동식 압축기의 운전제어장치에 대한 구성을 보인 회로도.1 is a circuit diagram showing a configuration for an operation control apparatus of a conventional reciprocating compressor.

도2는 본 발명 왕복동식 압축기를 이용한 냉장고의 운전제어방법에 대한 동작흐름도.Figure 2 is an operation flowchart of the operation control method of the refrigerator using the reciprocating compressor of the present invention.

도3은 도2에 있어서, 운전주파수에 따른 과부하 특성변화를 보인도.3 is a diagram showing a change in overload characteristics according to the operating frequency in FIG.

도4는도2에 있어서, 운전주파수에 따른 소전모드의 효율변화를 보인도.4 is a view showing a change in efficiency of the power dissipation mode according to the operating frequency in FIG.

상기와 같은 목적을 달성하기 위한 본 발명은, 스트로크 지령치에 따른 인가 전압에 의해, 피스톤의 운동으로 스트로크를 가변시켜 냉력을 조절하는 왕복동식 압축기를 이용한 냉장고에 있어서, 초기 기동시, 왕복동식 압축기의 운전주파수를 정상 상태보다 소정 범위 만큼 상승시켜 운전하는 제1 과정과; 일정시간이 지나면, 상기 왕복동식 압축기를, 정상상태의 운전주파수로 운전시키면서, 현재 냉장고의 운전모드가 소전모드로 변경되었는지를 판단하는 제2 과정과; 상기 판단결과, 현재 냉장고의 운전모드가 소전모드로 변경되면 상기 왕복동식 압축기의 운전주파수를, 정상상태의 운전주파수보다 소정 범위 만큼 상승시켜 운전하는 제3 과정으로 수행함을 특징으로 한다.The present invention for achieving the above object is, in the refrigerator using a reciprocating compressor to vary the stroke by the stroke of the piston by the applied voltage according to the stroke command value, in the initial start-up, A first step of driving the driving frequency by increasing the operating frequency by a predetermined range from the normal state; After a predetermined time, a second process of determining whether the operation mode of the present refrigerator is changed to the power consumption mode while operating the reciprocating compressor at an operating frequency in a normal state; As a result of the determination, when the operation mode of the current refrigerator is changed to the power failure mode, the operation frequency of the reciprocating compressor is increased by a predetermined range from the operation frequency in a normal state, and is performed as a third process of operating.

이하, 본 발명에 의한 왕복동식 압축기를 이용한 냉장고의 운전제어방법에 대한 작용 및 효과를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, the operation and effect of the operation control method of the refrigerator using the reciprocating compressor according to the present invention will be described in detail with reference to the accompanying drawings.

본 발명 왕복동식 압축기를 이용한 냉장고의 운전제어방법이 적용되는 장치는 종래와 동일하고, 도2는 본 발명 왕복동식 압축기를 이용한 냉장고의 운전제어방법에 대한 동작 흐름도로서, 이에 도시한 바와같이 초기 기동시, 운전주파수를 정상 상태보다 소정 범위 만큼 상승시켜 운전하는 제1 과정과; 일정시간이 지나면, 운전주파수를 정상상태로 변경하여 운전하는 제2 과정과; 소전모드이면, 운전주파수를 정상상태 보다 소정 범위 만큼 상승시켜 운전하는 제3 과정으로 이루어지며, 이와같은 본 발명의 동작을 설명한다.The apparatus to which the operation control method of the refrigerator using the reciprocating compressor of the present invention is applied is the same as in the related art, and FIG. 2 is an operation flowchart of the operation control method of the refrigerator using the reciprocating compressor of the present invention. A first step of driving the driving frequency by increasing a driving frequency by a predetermined range from a normal state; A second process of changing a driving frequency to a normal state after a predetermined time has passed; In the power failure mode, a third process of driving by raising the operating frequency by a predetermined range from the normal state is described. The operation of the present invention will be described.

먼저, 냉장고의 초기 기동시, 압축기의 흡입압과 토출압의 차이에 의해 발생하는 과부하에 대응하여 운전시키기 위하여, 운전주파수를 정상 상태보다 어느 정도 상승시켜 운전시킨다.First, in the initial start-up of the refrigerator, in order to operate in response to an overload caused by the difference between the suction pressure and the discharge pressure of the compressor, the operation frequency is raised to a certain degree than the normal state.

이때, 운전 주파수 상승범위는 정상상태의 운전주파수보다 5~10% 범위 이내로 하는데, 대략 운전주파수를 65Hz로 인가한다.At this time, the operating frequency rising range is within the range of 5 ~ 10% than the operating frequency of the steady state, approximately applying a driving frequency of 65Hz.

여기서, 도3은 운전주파수에 따른 과부하 특성 변화를 보인도로서, 운전주파수를 정상상태에서 과부하조건으로 변경하여 초기 기동시 모터과전류에 따른 포화를 약 50%정도 저감시킨다.3 is a diagram showing the change in overload characteristics according to the driving frequency, and the driving frequency is changed from the normal state to the overload condition to reduce the saturation due to the motor overcurrent at the initial start-up by about 50%.

일정시간후, 운전주파수를 정상상태로 변경하여, 약 60Hz로 왕복동식 압축기를 운전시킨다.After a certain time, the operating frequency is changed to the normal state, and the reciprocating compressor is operated at about 60 Hz.

만약, 소전모드가 되면, 운전주파수를 정상상태에서 소정 범위만큼 증가시켜 운전시킨다.여기서, 상기 소전모드는 냉장고의 소비전력이 최소화되는 상태를 의미하는데, 즉 냉장고 자체의 부하발생 요인(램프나 히터등)의 소비전력을 최소화시키는 상태를 의미하는 것으로, 주로 표준기관(KS)의 시험조건에 해당한다.이때, 운전주파수 상승범위는 정상상태의 운전주파수보다 5% 이내 범위로 상승시키는데,대략 운전주파수를 61Hz로 운전시킨다.If the power failure mode, the operation frequency is increased by a predetermined range to operate the drive frequency. Here, the power failure mode means a state in which the power consumption of the refrigerator is minimized, that is, the load generation factor (lamp or heater) of the refrigerator itself. It means the state that minimizes the power consumption, etc., and mainly corresponds to the test condition of the standard engine (KS). At this time, the operating frequency rising range rises within 5% of the operating frequency in the normal state, Run the frequency at 61 Hz.

여기서, 도4는 운전주파수에 따른 소전모드 효율의 변화를 보인도로서, 운전주파수를 정상상태 60Hz에서 소전 모드시 61Hz로 변경함으로써 효율이 상승되는 것을 볼 수 있다.Here, Figure 4 shows the change in efficiency of the sintering mode according to the operating frequency, it can be seen that the efficiency is increased by changing the operating frequency from the normal state 60Hz to 61Hz in the sintering mode.

이와같이 소전모드에서 운전주파수를 증가시킬때 효율이 상승하는 이유는 흡입/토출압이 일정하게 유지되어 압축실 가스의 스프링작용은 일정한 반면에 피스톤의 스트로크는 줄어들게 되고, 이로 인해 왕복동식압축기의 고유진동수가 증가함에 기인한다.The reason why the efficiency increases when operating frequency is increased in the mode is that the suction / discharge pressure is kept constant, so that the spring action of the compression chamber gas is constant while the stroke of the piston is reduced, which causes the natural frequency of the reciprocating compressor. Is due to the increase.

다시 말해서, 본 발명은 냉장고의 운전단계에 따라, 왕복동식 압축기의 운전주파수를 가변하여 운전하는데, 초기 기동시에는 과부하 대응 운전을 위하여 정상상태시의 운전주파수보다 상승시켜 운전하고, 소전모드시에는 운전효율을 향상시키기 위하여 정상상태시의 운전주파수보다 상승시켜 운전한다.In other words, the present invention operates by varying the operating frequency of the reciprocating compressor according to the operation stage of the refrigerator, at the time of initial start-up to operate over the operating frequency in the normal state for overload corresponding operation, in the power consumption mode In order to improve the driving efficiency, it is operated by raising the operating frequency under steady state.

이상에서 상세히 설명한 바와같이 본 발명은, 왕복동식 압축기를 이용한 냉장고를 운전시키는 경우, 초기 기동시 발생하는 과부하시 운전주파수를 정상상태보다 높게 운전시켜 모터포화를 방지하고, 소전모드시 정상 운전주파수 보다 높게 운전시킴으로써 운전효율을 향상시키는 효과가 있다.As described in detail above, in the present invention, when operating a refrigerator using a reciprocating compressor, the operation frequency during overload generated during initial startup is operated higher than the normal state to prevent motor saturation, By operating at a high level, there is an effect of improving the driving efficiency.

Claims (3)

스트로크 지령치에 따른 인가 전압에 의해, 피스톤의 운동으로 스트로크를 가변시켜 냉력을 조절하는 왕복동식 압축기를 이용한 냉장고에 있어서,In a refrigerator using a reciprocating compressor that adjusts the cooling power by varying the stroke by the movement of the piston according to the applied voltage according to the stroke command value, 초기 기동시, 왕복동식 압축기의 운전주파수를 정상 상태보다 소정 범위 만큼 상승시켜 운전하는 제1 과정과;A first step of operating the reciprocating compressor by raising the operating frequency by a predetermined range from a normal state at initial startup; 일정시간이 지나면, 상기 왕복동식 압축기를, 정상상태의 운전주파수로 운전시키면서, 현재 냉장고의 운전모드가 소전모드로 변경되었는지를 판단하는 제2 과정과;After a predetermined time, a second process of determining whether the operation mode of the present refrigerator is changed to the power consumption mode while operating the reciprocating compressor at an operating frequency in a normal state; 상기 판단결과, 현재 냉장고의 운전모드가 소전모드로 변경되면 상기 왕복동식 압축기의 운전주파수를, 정상상태의 운전주파수보다 소정 범위 만큼 상승시켜 운전하는 제3 과정으로 수행함을 특징으로 하는 왕복동식 압축기를 이용한 냉장고의 운전제어방법.As a result of the determination, when the operation mode of the current refrigerator is changed to the power consumption mode, the operation frequency of the reciprocating compressor is increased by a predetermined range from the operation frequency in a normal state, and the reciprocating compressor is performed as a third process. Operation control method of the refrigerator used. 제1 항에 있어서, 제1 과정은,The method of claim 1, wherein the first process comprises: 왕복동식 압축기의 운전주파수를 정상상태의 운전주파수보다 5~10% 범위 이내로 상승시키는 것을 특징으로 하는 왕복동식 압축기를 이용한 냉장고의 운전제어방법.An operating control method of a refrigerator using a reciprocating compressor, characterized in that to increase the operating frequency of the reciprocating compressor within the range of 5 to 10% of the operating frequency in the normal state. 제1 항에 있어서,제3 과정은,According to claim 1, The third process, 왕복동식 압축기의 운전주파수를 정상상태의 운전주파수보다 5% 이내 범위로 상승시키는 것을 특징으로 하는 왕복동식 압축기를 이용한 냉장고의 운전제어방법.An operating control method of a refrigerator using a reciprocating compressor, characterized in that to increase the operating frequency of the reciprocating compressor within 5% of the operating frequency in a steady state.
KR10-2002-0003953A 2002-01-23 2002-01-23 Driving control method for refrigerator using ciprocating compressor KR100451225B1 (en)

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Publication number Priority date Publication date Assignee Title
KR840004247A (en) * 1982-05-04 1984-10-10 사바 쇼오이찌 Heat Pump Type Air Conditioner
JPS61190233U (en) * 1985-05-20 1986-11-27
KR100311415B1 (en) * 1999-12-23 2001-10-12 구자홍 Operation control method for linear compressor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR840004247A (en) * 1982-05-04 1984-10-10 사바 쇼오이찌 Heat Pump Type Air Conditioner
JPS61190233U (en) * 1985-05-20 1986-11-27
KR100311415B1 (en) * 1999-12-23 2001-10-12 구자홍 Operation control method for linear compressor

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