JP2005351262A - Device and method for controlling operation of reciprocating compressor - Google Patents

Device and method for controlling operation of reciprocating compressor Download PDF

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JP2005351262A
JP2005351262A JP2004327309A JP2004327309A JP2005351262A JP 2005351262 A JP2005351262 A JP 2005351262A JP 2004327309 A JP2004327309 A JP 2004327309A JP 2004327309 A JP2004327309 A JP 2004327309A JP 2005351262 A JP2005351262 A JP 2005351262A
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reciprocating compressor
operation control
stroke
power saving
saving mode
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JP5031983B2 (en
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Kyeong-Bae Park
キョン−ベ パーク
Ki-Chul Choi
キ−チュル チョイ
Tae-Hee Kwak
テ−ヒー クワク
Eon-Pyo Hong
ヨン−ピョ ホン
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LG Electronics Inc
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LG Electronics Inc
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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
    • 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
    • F04B35/045—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 using solenoids
    • 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
    • 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
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F25B31/023—Compressor arrangements of motor-compressor units with compressor of reciprocating-piston type
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/032—Reciprocating, oscillating or vibrating motors
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and a method for controlling operation of the reciprocating compressor capable of improving operation efficiency of the reciprocating compressor by selectively connecting one of control routes of a general mode and a power saving mode preset by control signal and controlling stroke of the reciprocating compressor through the connected control route. <P>SOLUTION: The device for controlling operation of the reciprocating compressor comprises a microcomputer 40 outputting control signal for controlling stroke of the reciprocating compressor 10A, and an electric circuit part 10 selectively connecting one of the control routes of the general mode and the power saving mode preset by the control signal and controlling stroke of the reciprocating compressor 10A through the connected control route. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、往復動式圧縮機に関するもので、詳しくは、往復動式圧縮機の運転制御装置及びその方法に関するものである。   The present invention relates to a reciprocating compressor, and more particularly to an operation control apparatus and method for a reciprocating compressor.

一般に、往復動式圧縮機は、ピストンがシリンダの内部で線形に往復運動を行いながら、冷気装置の内部を循環する冷媒を高温高圧で圧縮する役割をする。このような往復動式圧縮機は、前記ピストンを駆動する方式によって、レシプロ方式とリニア方式とに大別される。   In general, the reciprocating compressor serves to compress the refrigerant circulating in the cool air device at a high temperature and high pressure while the piston linearly reciprocates inside the cylinder. Such reciprocating compressors are roughly classified into a reciprocating system and a linear system depending on the system for driving the piston.

前記レシプロ方式は、回転モータにクランクシャフトを係合し、該クランクシャフトにピストンを結合することで、前記回転モータの回転力により前記ピストンを直線往復運動させる方式であり、前記リニア方式は、直線モータにピストンを直接連結することで、前記直線モータの直線運動により前記ピストンを直線往復運動させる方式である。   The reciprocating system is a system in which a crankshaft is engaged with a rotary motor, and a piston is coupled to the crankshaft, whereby the piston is linearly reciprocated by the rotational force of the rotary motor. In this method, the piston is linearly reciprocated by the linear motion of the linear motor by directly connecting the piston to the motor.

即ち、前記リニア方式の往復動式圧縮機は、回転運動を直線運動に変換させるクランクシャフトを必要としない。従って、前記リニア方式の往復動式圧縮機は、相対的に摩擦損失が少ないため、一般の圧縮機よりも圧縮効率が高いという利点を有する。   That is, the linear type reciprocating compressor does not require a crankshaft for converting rotational motion into linear motion. Therefore, the linear type reciprocating compressor has an advantage that the compression efficiency is higher than that of a general compressor because the friction loss is relatively small.

また、前記リニア方式の往復動式圧縮機は、前記往復動式圧縮機のモータ(以下、モータと略称する。)に印加される電圧を調節することで、前記往復動式圧縮機の圧縮比を調節することができるため、冷気装置の冷力を制御することができる。   Further, the linear reciprocating compressor has a compression ratio of the reciprocating compressor by adjusting a voltage applied to a motor of the reciprocating compressor (hereinafter abbreviated as a motor). Therefore, the cooling power of the cool air device can be controlled.

以下、このような従来の往復動式圧縮機を制御するための運転制御装置を図４に基づいて説明する。   Hereinafter, an operation control apparatus for controlling such a conventional reciprocating compressor will be described with reference to FIG.

図４は、従来の往復動式圧縮機の運転制御装置の構成を示したブロック図で、図示されたように、従来の往復動式圧縮機の運転制御装置は、往復動式圧縮機１０Ａに印加される電圧を検出し、該検出された電圧を出力する電圧検出部３０と、前記往復動式圧縮機１０Ａに印加される電流を検出し、該検出された電流を出力する電流検出部２０と、前記検出された電圧及び電流に基づいてストローク推定値を演算し、該演算されたストローク推定値をストローク指令値と比較し、その比較結果による制御信号を出力するマイクロコンピュータ４０と、該マイクロコンピュータ４０の制御信号によってトライアックＴｒ１を制御することで、前記往復動式圧縮機１０Ａのストロークを変化させる電気回路部１０と、から構成されている。   FIG. 4 is a block diagram showing the configuration of a conventional reciprocating compressor operation control apparatus. As shown in FIG. 4, the conventional reciprocating compressor operation control apparatus includes a reciprocating compressor 10A. A voltage detector 30 that detects an applied voltage and outputs the detected voltage, and a current detector 20 that detects a current applied to the reciprocating compressor 10A and outputs the detected current. A microcomputer 40 that calculates a stroke estimated value based on the detected voltage and current, compares the calculated stroke estimated value with a stroke command value, and outputs a control signal based on the comparison result; The electric circuit unit 10 is configured to change the stroke of the reciprocating compressor 10A by controlling the triac Tr1 by a control signal of the computer 40.

以下、このように構成された従来の往復動式圧縮機の運転制御装置の動作について説明する。   Hereinafter, the operation of the operation control device of the conventional reciprocating compressor configured as described above will be described.

まず、前記往復動式圧縮機１０Ａは、予め設定されたストローク指令値によって印加される電圧に対応するようにピストンが直線往復運動することでストロークが変化し、その変化するストロークによって冷力を調節する。   First, the reciprocating compressor 10 </ b> A changes its stroke by linearly reciprocating the piston so as to correspond to a voltage applied by a preset stroke command value, and adjusts the cooling power by the changing stroke. To do.

そして、前記電圧検出部３０は、前記往復動式圧縮機１０Ａに印加される電圧を検出して該検出された電圧を出力し、前記電流検出部２０は、前記往復動式圧縮機１０Ａに印加される電流を検出して該検出された電流を出力する。   The voltage detector 30 detects the voltage applied to the reciprocating compressor 10A and outputs the detected voltage, and the current detector 20 applies the reciprocating compressor 10A. The detected current is detected and the detected current is output.

次いで、前記マイクロコンピュータ４０は、前記検出された電圧及び電流に基づいてストローク推定値を演算した後、該演算されたストローク推定値を前記ストローク指令値と比較し、その比較結果によって前記往復動式圧縮機１０Ａを制御するための制御信号を出力する。   Next, the microcomputer 40 calculates a stroke estimated value based on the detected voltage and current, and then compares the calculated stroke estimated value with the stroke command value. A control signal for controlling the compressor 10A is output.

その後、前記マイクロコンピュータ４０は、前記制御信号により前記電気回路部１０のトライアックＴｒ１のオン/オフ周期を変化させることで、前記往復動式圧縮機１０Ａのストロークを制御する。即ち、前記マイクロコンピュータ４０は、前記演算されたストローク推定値が前記ストローク指令値よりも小さいとき、前記トライアックＴｒ１のオン周期を長くする制御信号を出力することで、該トライアックＴｒ１を通して前記往復動式圧縮機１０Ａに印加される電圧を増加させ、前記演算されたストローク推定値が前記ストローク指令値よりも大きいとき、前記トライアックＴｒ１のオン周期を短くする制御信号を出力することで、該トライアックＴｒ１を通して前記往復動式圧縮機１０Ａに印加される電圧を減少させる。   Thereafter, the microcomputer 40 controls the stroke of the reciprocating compressor 10A by changing the on / off cycle of the triac Tr1 of the electric circuit unit 10 according to the control signal. That is, when the calculated stroke estimation value is smaller than the stroke command value, the microcomputer 40 outputs a control signal that lengthens the ON period of the triac Tr1, thereby allowing the reciprocating motion through the triac Tr1. When the voltage applied to the compressor 10A is increased and the calculated stroke estimated value is larger than the stroke command value, a control signal for shortening the on-cycle of the triac Tr1 is output, thereby passing through the triac Tr1. The voltage applied to the reciprocating compressor 10A is decreased.

従って、従来の往復動式圧縮機の運転制御装置においては、トライアックＴｒ１に入力される制御信号のオン/オフ周期を変化させることで、往復動式圧縮機１０Ａのストロークを制御する。   Therefore, in the conventional reciprocating compressor operation control device, the stroke of the reciprocating compressor 10A is controlled by changing the on / off cycle of the control signal input to the triac Tr1.

然るに、このような従来の往復動式圧縮機の運転制御装置においては、トライアックに入力される制御信号のオン/オフ周期を変化させることで、トライアック自体の通電損失及びこれによって発生する高調波損失により往復動式圧縮機の運転効率が低下するという不都合な点があった。   However, in such a conventional reciprocating compressor operation control device, by changing the on / off period of the control signal input to the triac, the energization loss of the triac itself and the harmonic loss generated thereby. As a result, the operating efficiency of the reciprocating compressor is lowered.

本発明は、このような従来の課題に鑑みてなされたもので、制御信号によって予め設定された一般モード及び節電モードの制御経路の何れか一つを選択的に連結し、該連結された制御経路を通して前記往復動式圧縮機のストロークを制御することで、往復動式圧縮機の運転効率を向上し得る往復動式圧縮機の運転制御装置及びその方法を提供することを目的とする。   The present invention has been made in view of such a conventional problem, and selectively connects one of the general mode and power saving mode control paths set in advance by a control signal, and the connected control. An object of the present invention is to provide an operation control apparatus and method for a reciprocating compressor that can improve the operation efficiency of the reciprocating compressor by controlling the stroke of the reciprocating compressor through a path.

このような目的を達成するために、本発明に係る往復動式圧縮機の運転制御装置は、往復動式圧縮機のストロークを制御するための制御信号を出力するマイクロコンピュータと、前記制御信号によって予め設定された一般モード及び節電モードの制御経路の何れか一つを選択的に連結し、該連結された制御経路を通して前記往復動式圧縮機のストロークを制御する電気回路部と、を含んで構成されることを特徴とする。   In order to achieve such an object, an operation control device for a reciprocating compressor according to the present invention includes a microcomputer that outputs a control signal for controlling the stroke of the reciprocating compressor, and the control signal. An electrical circuit unit that selectively connects one of preset control paths of the general mode and the power saving mode, and controls the stroke of the reciprocating compressor through the connected control path. It is characterized by being configured.

そして、本発明に係る往復動式圧縮機の運転制御方法は、トライアックのオン/オフ周期を利用して往復動式圧縮機のストロークを制御する一般モードで駆動する段階と、前記往復動式圧縮機を節電モードで駆動し得るか否かを判断する段階と、その判断結果によって前記節電モードで前記往復動式圧縮機を駆動する段階と、を順次行うことを特徴とする。   The method for controlling the operation of the reciprocating compressor according to the present invention includes a step of driving in a general mode for controlling the stroke of the reciprocating compressor using a triac on / off cycle, and the reciprocating compression. Determining whether or not the machine can be driven in the power saving mode and sequentially driving the reciprocating compressor in the power saving mode according to the determination result.

本発明に係る往復動式圧縮機の運転制御装置及びその方法においては、制御信号によって予め設定された一般モード及び節電モードの制御経路の何れか一つを選択的に連結し、該連結された制御経路を通して前記往復動式圧縮機のストロークを制御することで、往復動式圧縮機の運転効率を向上し得るという効果がある。   In the reciprocating compressor operation control apparatus and method according to the present invention, any one of the control paths of the general mode and the power saving mode preset by the control signal is selectively connected, and the connected By controlling the stroke of the reciprocating compressor through the control path, there is an effect that the operation efficiency of the reciprocating compressor can be improved.

以下、制御信号によって予め設定された一般モード及び節電モードの制御経路の何れか一つを選択的に連結し、該連結された制御経路を通して前記往復動式圧縮機のストロークを制御することで、往復動式圧縮機の運転効率を向上し得る、往復動式圧縮機の運転制御装置及びその方法の最良の実施形態について、添付の図面に基づいて説明する。   Hereinafter, by selectively connecting any one of the control paths of the general mode and the power saving mode preset by the control signal, and controlling the stroke of the reciprocating compressor through the connected control path, BEST MODE FOR CARRYING OUT THE INVENTION A best mode of an operation control apparatus and method for a reciprocating compressor that can improve the operation efficiency of the reciprocating compressor will be described with reference to the accompanying drawings.

図１は、本発明に係る往復動式圧縮機の運転制御装置の構成を示したブロック図で、図示されたように、本発明に係る往復動式圧縮機の運転制御装置は、往復動式圧縮機１０Ａに印加される電圧を検出し、該検出された電圧を出力する電圧検出部３０と、前記往復動式圧縮機１０Ａに印加される電流を検出し、該検出された電流を出力する電流検出部２０と、前記検出された電圧及び電流に基づいてストローク推定値を演算し、該演算されたストローク推定値をストローク指令値と比較し、その比較結果による制御信号を出力するマイクロコンピュータ４０と、該マイクロコンピュータ４０の制御信号によって、予め設定された一般モード及び節電モードの制御経路の何れか一つを選択的に連結し、該連結された制御経路を通して前記往復動式圧縮機１０Ａのストロークを制御する電気回路部１０と、から構成されている。ここで、前記一般モードは、前記往復動式圧縮機１０Ａ内部の主巻線にトライアックを連結し、該連結されたトライアックのオン/オフ周期を制御することで、前記往復動式圧縮機１０Ａのストロークを制御することをいい、前記節電モードは、前記往復動式圧縮機１０Ａ内部の主巻線に予め決定された巻線数の副巻線を連結することで、前記往復動式圧縮機１０Ａのストロークを予め決定された値に維持することをいう。   FIG. 1 is a block diagram showing the configuration of an operation control device for a reciprocating compressor according to the present invention. As shown in the drawing, the operation control device for a reciprocating compressor according to the present invention is a reciprocating operation type. A voltage detection unit 30 that detects a voltage applied to the compressor 10A, outputs the detected voltage, detects a current applied to the reciprocating compressor 10A, and outputs the detected current. A microcomputer 40 that calculates a stroke estimated value based on the detected voltage and current, compares the calculated stroke estimated value with a stroke command value, and outputs a control signal based on the comparison result. And a control signal of the microcomputer 40 to selectively connect one of the preset control paths of the general mode and the power saving mode, and the reciprocating motion through the connected control path. An electric circuit unit 10 for controlling the stroke of the compressor 10A, and a. Here, in the general mode, a triac is connected to a main winding inside the reciprocating compressor 10A, and an ON / OFF cycle of the connected triac is controlled, so that the reciprocating compressor 10A The power saving mode is a mode in which the reciprocating compressor 10A is connected to a main winding inside the reciprocating compressor 10A by connecting sub-windings having a predetermined number of windings. Is maintained at a predetermined value.

このように構成された本発明に係る往復動式圧縮機の運転制御装置の動作を図２に基づいて説明する。   The operation of the operation control apparatus for a reciprocating compressor according to the present invention configured as described above will be described with reference to FIG.

図２は、本発明に係る往復動式圧縮機の運転制御方法を示したフローチャートで、図示されたように、本発明に係る往復動式圧縮機の運転制御方法においては、トライアックのオン/オフ周期を利用して往復動式圧縮機のストロークを制御する一般モードで駆動する段階(ステップＳ３１)と、前記往復動式圧縮機を節電モードで駆動し得るか否かを判断する段階(ステップＳ３２)と、その判断結果によって前記節電モードで前記往復動式圧縮機を駆動する段階(ステップＳ３３)と、を順次行う。   FIG. 2 is a flowchart illustrating an operation control method for a reciprocating compressor according to the present invention. As illustrated, in the operation control method for a reciprocating compressor according to the present invention, the triac is turned on / off. The step of driving in a general mode for controlling the stroke of the reciprocating compressor using the period (step S31) and the step of determining whether or not the reciprocating compressor can be driven in a power saving mode (step S32) And the step of driving the reciprocating compressor in the power saving mode according to the determination result (step S33).

以下、このような本発明に係る往復動式圧縮機の運転制御方法をより詳しく説明する。   Hereinafter, the operation control method of the reciprocating compressor according to the present invention will be described in more detail.

まず、前記往復動式圧縮機１０Ａは、使用者により設定されたストローク指令値によって印加される電圧に対応するようにピストンが直線往復運動することでストロークが変化し、その変化するストロークによって冷力を調節する(ステップＳ３１)。即ち、前記マイクロコンピュータ４０は、スイッチング部を通して前記一般モードの制御経路を連結し、該連結された制御経路上のトライアックＴｒ１のオン/オフ周期を制御することで、前記往復動式圧縮機１０Ａのストロークを変化させる。ここで、前記スイッチング部としては、リレーＲｙ１を使用することが好ましい。   First, in the reciprocating compressor 10A, the stroke is changed by the piston reciprocating linearly so as to correspond to the voltage applied by the stroke command value set by the user, and the cooling force is changed by the changed stroke. Is adjusted (step S31). That is, the microcomputer 40 connects the control path of the general mode through the switching unit, and controls the ON / OFF cycle of the triac Tr1 on the connected control path, so that the reciprocating compressor 10A can be controlled. Change the stroke. Here, it is preferable to use a relay Ry1 as the switching unit.

このとき、前記電気回路部１０は、予め設定された一般モード及び節電モードの制御経路から構成されて、前記マイクロコンピュータ４０の制御信号による前記リレーＲｙ１のスイッチング制御により一つの制御経路を選択的に連結することで、前記往復動式圧縮機１０Ａのストロークを制御する。   At this time, the electric circuit unit 10 is configured by preset control paths of the general mode and the power saving mode, and selectively selects one control path by switching control of the relay Ry1 by a control signal of the microcomputer 40. By connecting, the stroke of the reciprocating compressor 10A is controlled.

そして、前記マイクロコンピュータ４０は、前記往復動式圧縮機が適用された冷気装置内部の温度を測定し、該測定された温度及び以前周期の測定された温度に基づいて前記冷気装置内部の温度変化を演算するか、または前記測定された温度と予め設定された臨界温度とを比較する(ステップＳ３２)。即ち、前記マイクロコンピュータ４０は、前記冷気装置内部の温度が予め決定された範囲以上に変化するか、または前記臨界温度よりも高いとき、前記往復動式圧縮機のストロークを一般モードに制御し、前記冷気装置内部の温度が予め決定された範囲以内で変化し、前記臨界温度よりも低いとき、前記往復動式圧縮機のストロークを節電モードに制御する(ステップＳ３３)。   The microcomputer 40 measures the temperature inside the cool air device to which the reciprocating compressor is applied, and the temperature change inside the cool air device based on the measured temperature and the temperature measured in the previous cycle. Or the measured temperature is compared with a preset critical temperature (step S32). That is, the microcomputer 40 controls the stroke of the reciprocating compressor to a general mode when the temperature inside the cold air apparatus changes to a predetermined range or higher or is higher than the critical temperature, When the temperature inside the cool air device changes within a predetermined range and is lower than the critical temperature, the stroke of the reciprocating compressor is controlled to the power saving mode (step S33).

ここで、本発明に係る往復動式圧縮機の運転制御装置は、前記一般モード及び節電モードの駆動のための条件として、前述の条件だけでなく、前記往復動式圧縮機が適用された装置の負荷変動を感知し得る温度、電圧及び電流など、多様な条件を通して駆動することができる。   Here, the operation control apparatus for the reciprocating compressor according to the present invention is an apparatus to which the reciprocating compressor is applied as a condition for driving the general mode and the power saving mode. It can be driven through various conditions such as temperature, voltage, and current that can sense the load fluctuation.

前記一般モードの制御経路が選択されるとき、前記マイクロコンピュータ４０は、前記検出された電圧及び電流に基づいてストローク推定値を演算し、該演算されたストローク推定値と前記ストローク指令値とを比較することで、その比較結果によって前記往復動式圧縮機１０Ａを制御するための制御信号を出力する。   When the control path of the general mode is selected, the microcomputer 40 calculates a stroke estimated value based on the detected voltage and current, and compares the calculated stroke estimated value with the stroke command value. Thus, a control signal for controlling the reciprocating compressor 10A is output according to the comparison result.

その後、前記マイクロコンピュータ４０は、前記制御信号により前記電気回路部１０のトライアックＴｒ１のオン/オフ周期を変化させることで、前記往復動式圧縮機１０Ａのストロークを制御する。即ち、前記マイクロコンピュータ４０は、前記演算されたストローク推定値が前記ストローク指令値よりも小さいとき、前記トライアックＴｒ１のオン周期を長くする制御信号を出力することで、該トライアックＴｒ１を通して前記往復動式圧縮機１０Ａに印加される電圧を増加させ、前記演算されたストローク推定値が前記ストローク指令値よりも大きいとき、前記トライアックＴｒ１のオン周期を短くする制御信号を出力することで、該トライアックＴｒ１を通して前記往復動式圧縮機１０Ａに印加される電圧を減少させる。   Thereafter, the microcomputer 40 controls the stroke of the reciprocating compressor 10A by changing the on / off cycle of the triac Tr1 of the electric circuit unit 10 according to the control signal. That is, when the calculated stroke estimation value is smaller than the stroke command value, the microcomputer 40 outputs a control signal that lengthens the ON period of the triac Tr1, thereby allowing the reciprocating motion through the triac Tr1. When the voltage applied to the compressor 10A is increased and the calculated stroke estimated value is larger than the stroke command value, a control signal for shortening the on-cycle of the triac Tr1 is output, thereby passing through the triac Tr1. The voltage applied to the reciprocating compressor 10A is decreased.

このような本発明に係る往復動式圧縮機の運転制御装置は、冷気装置内部の温度が急激に変化するか、または予め設定された臨界温度よりも高いとき、前記トライアックＴｒ１を通して前記往復動式圧縮機を前記一般モードで駆動する。   Such a reciprocating compressor operation control apparatus according to the present invention is configured such that when the temperature inside the cool air apparatus changes rapidly or is higher than a preset critical temperature, the reciprocating type operation is performed through the triac Tr1. The compressor is driven in the general mode.

一方、前記冷気装置内部の温度が予め決定された範囲内で変化し、前記臨界温度よりも低いとき、前記マイクロコンピュータ４０は、前記リレーＲｙ１を通して前記節電モードの制御経路、即ち、前記往復動式圧縮機１０Ａ内部の主巻線Ｌ１に予め決定された巻線数の副巻線Ｌ２を連結することで、前記トライアックＴｒ１を利用することなく、前記往復動式圧縮機１０Ａ内部の主巻線Ｌ１及び該主巻線Ｌ１に連結された副巻線Ｌ２を通して、前記往復動式圧縮機１０Ａのストロークを予め決定された値に維持する。   On the other hand, when the temperature inside the cool air device changes within a predetermined range and is lower than the critical temperature, the microcomputer 40 controls the power saving mode control path through the relay Ry1, that is, the reciprocating type. By connecting the predetermined number of sub-windings L2 to the main winding L1 inside the compressor 10A, the main winding L1 inside the reciprocating compressor 10A can be used without using the triac Tr1. The stroke of the reciprocating compressor 10A is maintained at a predetermined value through the auxiliary winding L2 connected to the main winding L1.

このような本発明に係る往復動式圧縮機の運転制御装置は、前記冷気装置内部の温度が予め決定された範囲内で変化し、臨界温度よりも小さいとき、例えば、前記冷気装置の使用頻度または負荷変動が極度に少ない時間の間、または周囲温度が相対的に低い時間の間には、前記往復動式圧縮機を節電モードで駆動することで、該往復動式圧縮機が適用された冷気装置を最小の消費電力で駆動させることができる。   Such an operation control device for a reciprocating compressor according to the present invention, when the temperature inside the cold air device changes within a predetermined range and is lower than the critical temperature, for example, the use frequency of the cold air device Alternatively, the reciprocating compressor is applied by driving the reciprocating compressor in a power saving mode during a time when the load fluctuation is extremely small or during a time when the ambient temperature is relatively low. The cool air device can be driven with minimum power consumption.

このような往復動式圧縮機が節電モードで駆動されるとき、本発明に係る運転制御装置が適用された往復動式圧縮機の冷力による運転効率を、図３に基づいて説明する。   When such a reciprocating compressor is driven in the power saving mode, the operation efficiency due to the cooling power of the reciprocating compressor to which the operation control device according to the present invention is applied will be described with reference to FIG.

図３は、本発明に係る運転制御装置が適用された往復動式圧縮機の冷力による運転効率を示したグラフで、図示されたように、本発明に係る運転制御装置が適用された往復動式圧縮機の節電モードにおける運転効率Ａは、前記節電モードが駆動される区間で、従来の往復動式圧縮機の一般モードにおける運転効率Ｂよりも顕著に向上したことが分かる。   FIG. 3 is a graph showing the operation efficiency due to the cooling power of the reciprocating compressor to which the operation control apparatus according to the present invention is applied. As shown in FIG. 3, the reciprocation to which the operation control apparatus according to the present invention is applied. It can be seen that the operation efficiency A in the power saving mode of the dynamic compressor is significantly improved over the operation efficiency B in the general mode of the conventional reciprocating compressor in the section in which the power saving mode is driven.

本発明に係る往復動式圧縮機の運転制御装置の構成を示したブロック図である。It is the block diagram which showed the structure of the operation control apparatus of the reciprocating compressor which concerns on this invention. 本発明に係る往復動式圧縮機の運転制御方法を示したフローチャートである。3 is a flowchart illustrating an operation control method for a reciprocating compressor according to the present invention. 本発明に係る運転制御装置が適用された往復動式圧縮機の冷力による運転効率を示したグラフである。It is the graph which showed the operation efficiency by the cooling power of the reciprocating compressor to which the operation control device concerning the present invention was applied. 従来の往復動式圧縮機の運転制御装置の構成を示したブロック図である。It is the block diagram which showed the structure of the operation control apparatus of the conventional reciprocating compressor.

符号の説明Explanation of symbols

１０ 電気回路部
１０Ａ 往復動式圧縮機
２０ 電流検出部
３０ 電圧検出部
４０ マイクロコンピュータ
Ｌ１ 主巻線
Ｌ２ 副巻線
Ｔｒ１ トライアック
Ｒｙ１ リレー DESCRIPTION OF SYMBOLS 10 Electric circuit part 10A Reciprocating compressor 20 Current detection part 30 Voltage detection part 40 Microcomputer L1 Main winding L2 Subwinding Tr1 Triac Ry1 Relay

Claims (13)

往復動式圧縮機のストロークを制御するための制御信号を出力するマイクロコンピュータと、
前記制御信号によって予め設定された一般モード及び節電モードの制御経路の何れか一つを選択的に連結し、該連結された制御経路を通して前記往復動式圧縮機のストロークを制御する電気回路部と、
を含んで構成されることを特徴とする往復動式圧縮機の運転制御装置。 A microcomputer that outputs a control signal for controlling the stroke of the reciprocating compressor;
An electric circuit unit that selectively connects one of the control paths of the general mode and the power saving mode set in advance by the control signal, and controls the stroke of the reciprocating compressor through the connected control path; ,
An operation control apparatus for a reciprocating compressor, comprising: 前記電気回路部は、前記制御信号によって予め設定された一般モード及び節電モードの制御経路の何れか一つを選択的に連結するスイッチング部を含むことを特徴とする、請求項１記載の往復動式圧縮機の運転制御装置。   The reciprocating motion according to claim 1, wherein the electric circuit unit includes a switching unit that selectively connects one of a control path of a general mode and a power saving mode set in advance by the control signal. Type compressor operation control device. 前記スイッチング部は、リレーであることを特徴とする、請求項２記載の往復動式圧縮機の運転制御装置。   The reciprocating compressor operation control device according to claim 2, wherein the switching unit is a relay. 前記マイクロコンピュータは、前記往復動式圧縮機が適用された冷気装置内部の温度が予め決定された範囲以上に変化するか、または臨界温度よりも高いとき、前記一般モードで前記往復動式圧縮機を駆動させる制御信号を出力することを特徴とする、請求項１記載の往復動式圧縮機の運転制御装置。   The microcomputer has the reciprocating compressor in the general mode when the temperature inside the cool air device to which the reciprocating compressor is applied changes beyond a predetermined range or is higher than a critical temperature. 2. The reciprocating compressor operation control device according to claim 1, wherein a control signal for driving the compressor is output. 前記一般モードは、前記往復動式圧縮機内部の主巻線にトライアックを連結し、該連結されたトライアックのオン/オフ周期を制御することで、前記往復動式圧縮機のストロークを変化させることを特徴とする、請求項４記載の往復動式圧縮機の運転制御装置。   The general mode is to change a stroke of the reciprocating compressor by connecting a triac to a main winding inside the reciprocating compressor and controlling an on / off cycle of the connected triac. The operation control apparatus for a reciprocating compressor according to claim 4, wherein: 前記マイクロコンピュータは、前記一般モードの制御経路が連結されるとき、前記トライアックのオン/オフ周期を制御するための制御信号を出力することを特徴とする、請求項４記載の往復動式圧縮機の運転制御装置。   5. The reciprocating compressor according to claim 4, wherein the microcomputer outputs a control signal for controlling an on / off period of the triac when the control path of the general mode is connected. Operation control device. 前記マイクロコンピュータは、前記往復動式圧縮機が適用された冷気装置内部の温度が予め決定された範囲以内で変化し、臨界温度よりも低いとき、前記節電モードで前記往復動式圧縮機を駆動させる制御信号を出力することを特徴とする、請求項１記載の往復動式圧縮機の運転制御装置。   The microcomputer drives the reciprocating compressor in the power saving mode when the temperature inside the cool air apparatus to which the reciprocating compressor is applied changes within a predetermined range and is lower than a critical temperature. 2. The operation control device for a reciprocating compressor according to claim 1, wherein a control signal is output. 前記節電モードは、前記往復動式圧縮機内部の主巻線に予め決定された巻線数の副巻線を連結することで、前記往復動式圧縮機のストロークを予め決定された値に維持することを特徴とする、請求項７記載の往復動式圧縮機の運転制御装置。   In the power saving mode, the stroke of the reciprocating compressor is maintained at a predetermined value by connecting a predetermined number of sub-windings to the main winding inside the reciprocating compressor. The operation control device for a reciprocating compressor according to claim 7, wherein the operation control device is a reciprocating compressor. トライアックのオン/オフ周期を利用して往復動式圧縮機のストロークを制御する一般モードで駆動する段階と、
前記往復動式圧縮機を節電モードで駆動し得るか否かを判断する段階と、
その判断結果によって前記節電モードで前記往復動式圧縮機を駆動する段階と、
を順次行うことを特徴とする往復動式圧縮機の運転制御方法。 Driving in a general mode that controls the stroke of the reciprocating compressor using the on / off period of the triac,
Determining whether the reciprocating compressor can be driven in a power saving mode; and
Driving the reciprocating compressor in the power saving mode according to the determination result; and
The operation control method of the reciprocating compressor characterized by performing sequentially. 前記節電モードで駆動し得るか否かを判断する段階は、前記往復動式圧縮機が適用された冷気装置内部の温度が予め決定された範囲以上に変化するか、または臨界温度よりも高いとき、前記一般モードで前記往復動式圧縮機を駆動させることを特徴とする、請求項９記載の往復動式圧縮機の運転制御方法。   The step of determining whether or not it can be driven in the power saving mode is performed when the temperature inside the cool air device to which the reciprocating compressor is applied changes to a predetermined range or higher or is higher than a critical temperature. The operation control method for a reciprocating compressor according to claim 9, wherein the reciprocating compressor is driven in the general mode. 前記一般モードは、前記往復動式圧縮機内部の主巻線にトライアックを連結し、該連結されたトライアックのオン/オフ周期を制御することで、前記往復動式圧縮機のストロークを変化させることを特徴とする、請求項１０記載の往復動式圧縮機の運転制御方法。   The general mode is to change a stroke of the reciprocating compressor by connecting a triac to a main winding inside the reciprocating compressor and controlling an on / off cycle of the connected triac. The operation control method for a reciprocating compressor according to claim 10, wherein: 前記節電モードで駆動し得るか否かを判断する段階は、前記往復動式圧縮機が適用された冷気装置内部の温度が予め決定された範囲以内で変化し、臨界温度よりも低いとき、前記節電モードで前記往復動式圧縮機を駆動させることを特徴とする、請求項９記載の往復動式圧縮機の運転制御方法。   The step of determining whether or not it can be driven in the power saving mode is performed when the temperature inside the cool air device to which the reciprocating compressor is applied changes within a predetermined range and is lower than a critical temperature. The reciprocating compressor operation control method according to claim 9, wherein the reciprocating compressor is driven in a power saving mode. 前記節電モードは、前記往復動式圧縮機内部の主巻線に予め決定された巻線数の副巻線を連結することで、前記往復動式圧縮機のストロークを予め決定された値に維持することを特徴とする、請求項１２記載の往復動式圧縮機の運転制御方法。   In the power saving mode, the stroke of the reciprocating compressor is maintained at a predetermined value by connecting a predetermined number of sub-windings to the main winding inside the reciprocating compressor. The operation control method for a reciprocating compressor according to claim 12, wherein:
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