JPH0861247A - Equipment and method of controlling operation of air conditioner - Google Patents

Equipment and method of controlling operation of air conditioner

Info

Publication number
JPH0861247A
JPH0861247A JP7162660A JP16266095A JPH0861247A JP H0861247 A JPH0861247 A JP H0861247A JP 7162660 A JP7162660 A JP 7162660A JP 16266095 A JP16266095 A JP 16266095A JP H0861247 A JPH0861247 A JP H0861247A
Authority
JP
Japan
Prior art keywords
current
compressor
air conditioner
operating frequency
consumption
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7162660A
Other languages
Japanese (ja)
Inventor
Hyun-Chol Park
玄哲 朴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of JPH0861247A publication Critical patent/JPH0861247A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32Responding to malfunctions or emergencies
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/50Load

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To improve the durability of apparatuses by comparing the consumption current, which is changed when a compressor of an air conditioner is driven, with a set current to change the operational frequency of the compressor, and thereby preventing overheating of the compressor due to an abrupt increase in the current consumption. CONSTITUTION: When current is applied to an air conditioner, commercial AC supply voltage from AC power supply 1 is full wave rectified by a rectifying means 60, and DC voltage is inputted to a compressor driving means 70. A DC power supply means 10 converts supply voltage from an AC power supply input terminal 1 into DC voltage necessary to drive the air conditioner to input it to a driving circuit and a control means 30. The control means 30 determines the operational frequency of a compressor 71 from the difference between a set temperature inputted from an operation control means 20 and a room temperature inputted from a room temperature sensing means 40 to output it to the compressor driving means 70. The compressor driving means 70 drives the compressor 71 with the operational frequency. A current sensing means 80 senses direct current fluctuations of the compressor 71.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、周波数を可変させて圧
縮機を駆動するインバータ空気調和機において、とく
に、過電流による圧縮機の過熱を防止する空気調和機の
運転制御装置、および、その方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inverter air conditioner for driving a compressor by changing the frequency, and more particularly, to an operation control device for an air conditioner which prevents overheating of the compressor due to overcurrent. It is about the method.

【0002】[0002]

【従来の技術】従来による空気調和機の制御装置は、図
1に示すごとく、交流電源入力端1から供給される商用
交流電源の電源電圧を整流手段60で全波整流して圧縮
機駆動手段70に出力する。
2. Description of the Related Art In a conventional air conditioner control apparatus, as shown in FIG. 1, the power supply voltage of a commercial AC power source supplied from an AC power source input terminal 1 is full-wave rectified by a rectifying means 60 to perform compressor driving means. Output to 70.

【0003】したがって、前記圧縮機駆動手段70で
は、制御手段30の制御による図示のないスイッチング
素子のターンオン、あるいは、ターンオフ動作により前
記整流手段60から出力される直流電源を3相交流電源
に逆変換して圧縮機71の運転周波数を変換させる。
Therefore, in the compressor driving means 70, the DC power output from the rectifying means 60 is inversely converted into a three-phase AC power supply by the turn-on or turn-off operation of a switching element (not shown) under the control of the control means 30. Then, the operating frequency of the compressor 71 is converted.

【0004】すなわち、前記圧縮機駆動手段70は、空
気調和機の空調運転に必要な冷房、あるいは、暖房能に
対応して圧縮機71の運転周波数を可変させて前記圧縮
機71を駆動制御する。
That is, the compressor driving means 70 drives and controls the compressor 71 by varying the operating frequency of the compressor 71 in accordance with the cooling or heating capacity required for air conditioning operation of the air conditioner. .

【0005】この際、変流器21では前記圧縮機71の
駆動時に変化する交流電源入力端1の入力電流変化量を
感知した前記制御手段30に出力する。
At this time, the current transformer 21 outputs the change amount of the input current of the AC power source input terminal 1 which changes when the compressor 71 is driven, to the control means 30.

【0006】これにより、前記制御手段30では変流器
21により感知された入力電流データIをあらかじめ設
定されている限界電流データImaxと比較し、電流デ
ータIが限界電流データImaxより小の場合には、圧
縮機71の駆動時に消費される電流が正常電流なると判
断して圧縮機71を正常駆動させる。
As a result, the control means 30 compares the input current data I sensed by the current transformer 21 with the preset limit current data Imax, and when the current data I is smaller than the limit current data Imax. Determines that the current consumed when driving the compressor 71 is a normal current, and drives the compressor 71 normally.

【0007】一方、前記変流器により感知された電流デ
ータIが限界電流データImaxより大の場合には、圧
縮機71の駆動時に消費される電流が過電流であると判
断して圧縮機71の駆動を停止させる。
On the other hand, when the current data I sensed by the current transformer is larger than the limit current data Imax, it is determined that the current consumed when the compressor 71 is driven is an overcurrent and the compressor 71 is detected. Stop driving.

【0008】[0008]

【発明が解決しようとする課題】ところで、かような従
来の駆動方式においては、圧縮機の駆動時に変化する消
費電流が過電流なるかを判別して圧縮機の駆動を制御す
ることにより、圧縮機はある程度に保護できるが、限界
電流データ以下の状況においても圧縮機の消費電流が突
然増加して瞬間的に圧縮機に過負荷がかかり、機器の耐
久性が低下するという問題点があった。
By the way, in such a conventional drive system, it is determined whether or not the consumption current that changes when the compressor is driven is an overcurrent, and the drive of the compressor is controlled to achieve the compression. Although the compressor can be protected to some extent, the current consumption of the compressor suddenly increases even when the current is below the limit current data, and the compressor is momentarily overloaded, resulting in a decrease in device durability. .

【0009】また、低電流発生にたいする感知機能がな
いため、変流器の断線、および、異常時にも前記圧縮機
を無理に運転させることにより、機器の耐久性が低下す
るという問題点があった。
Further, since there is no sensing function for generating a low current, there is a problem that the durability of the equipment is deteriorated by forcibly operating the compressor even when the current transformer is broken or abnormal. .

【0010】[0010]

【発明の目的】したがって、本発明は、上記いろいろな
問題点を解決するためになされたものであって、本発明
の目的は、圧縮機の駆動時に変化する消費電流を設定電
流と比較して前記圧縮機の運転周波数を変化させること
により、消費電流の突然の増加による圧縮機の過熱が防
止でき、機器の耐久性を向上させ得るという空気調和機
の運転制御装置、および、その方法を提供することにあ
る。
SUMMARY OF THE INVENTION Therefore, the present invention has been made to solve the above-mentioned various problems, and an object of the present invention is to compare the consumption current which changes when the compressor is driven with the set current. Provided are an air conditioner operation control device and a method thereof, which can prevent the compressor from overheating due to a sudden increase in current consumption by changing the operation frequency of the compressor and improve the durability of the device. To do.

【0011】[0011]

【課題を解決するための手段】上記目的を達成するため
に、本発明による空気調和機の運転制御装置は、交流電
源入力端から入力される商用交流電圧を直流電圧に全波
整流する整流手段と、該整流手段から出力される直流電
圧を3相交流電源に逆変換して圧縮機の運転周波数を変
換する圧縮機駆動手段とからなる空気調和機において、
前記圧縮機駆動手段により駆動される圧縮機の駆動電流
を設定する電流設定手段と、前記圧縮機駆動手段により
駆動される圧縮機の消費電流を感知する電流感知手段
と、該電流感知手段により感知された消費電流データ、
および、前記電流設定手段により設定された駆動電流デ
ータとを比較して過電流による前記圧縮機の過熱を防止
するよう前記圧縮機の運転周波数を制御する制御手段と
を具備してなることを特徴とする。
In order to achieve the above object, an operation control device for an air conditioner according to the present invention is a rectifying means for full-wave rectifying a commercial AC voltage input from an AC power supply input terminal into a DC voltage. And a compressor driving unit that reversely converts the DC voltage output from the rectifying unit into a three-phase AC power source to convert the operating frequency of the compressor,
Current setting means for setting a drive current of the compressor driven by the compressor driving means, current sensing means for sensing current consumption of the compressor driven by the compressor driving means, and sensing by the current sensing means Current consumption data,
And a control means for comparing the drive current data set by the current setting means and controlling the operating frequency of the compressor to prevent overheating of the compressor due to overcurrent. And

【0012】また、本発明による空気調和機の運転制御
方法は、設定温度、および、圧縮機の設定電流を入力す
るデータ入力ステップと、該データ入力ステップから入
力された設定温度、および、室内温度との差にしたがっ
て前記圧縮機の運転周波数を決定する運転周波数決定ス
テップと、該運転周波数決定手段で決定された運転周波
数にしたがって駆動する前記圧縮機の消費電流を感知す
る電流感知ステップと、該電流感知ステップにより感知
された消費電流が制御手段に既設定された限界電流以下
であるかを判別する限界電流判別ステップと、該限界電
流判別ステップから判別された消費電流が限界電流以下
であれば、前記電流感知ステップにより感知された消費
電流、および、前記データ入力ステップから入力された
設定電流を比較して前記圧縮機の運転周波数を変換する
運転周波数変換ステップとを具備してなることを特徴と
する。
Further, according to the operation control method of the air conditioner of the present invention, a data input step of inputting a set temperature and a set current of the compressor, a set temperature input from the data input step, and an indoor temperature. An operating frequency determining step of determining an operating frequency of the compressor according to a difference between the operating frequency and a current sensing step of sensing a consumption current of the compressor driven according to the operating frequency determined by the operating frequency determining means; If the consumption current sensed by the current sensing step is less than or equal to the limit current preset in the control means, and if the consumption current determined from the limit current determination step is less than or equal to the limit current Comparing the current consumption sensed by the current sensing step and the set current inputted from the data inputting step. And characterized by being provided with the operation frequency conversion step of converting the operation frequency of the compressor.

【0013】[0013]

【実施例】以下、本発明による一実施例について添付図
面に沿って詳述する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

【0014】図2に示すごとく、直流電源手段10は、
交流電源入力端1から供給される商用交流電源の電源電
圧が入力されて空気調和機の駆動に必要な所定の直流電
圧に変換してそれぞれの駆動回路に出力し、運転操作手
段20は使用者所望の空気調和機の運転条件(冷房、暖
房、清浄、除湿など)、および、設定温度Tsを入力す
るよう多数の機能キーを前記空気調和機のコントロール
パネル、および、リモコンに備えている。
As shown in FIG. 2, the DC power supply means 10 is
The power supply voltage of the commercial AC power supply supplied from the AC power supply input terminal 1 is input, converted into a predetermined DC voltage necessary for driving the air conditioner, and output to each drive circuit, and the driving operation means 20 is operated by the user. A large number of function keys are provided on the control panel and the remote controller of the air conditioner so as to input desired operating conditions of the air conditioner (cooling, heating, cleaning, dehumidification, etc.) and the set temperature Ts.

【0015】さらに、制御手段30は、前記直流電源手
段10から出力される直流電圧を印加されて前記空気調
和機を初期化させることは勿論、前記運転操作手段20
により入力された運転条件にしたがって前記空気調和機
の全体の動作を制御するマイクロコンピュータであっ
て、該制御手段30は室内機を制御する室内機マイクロ
コンピュータと、室外機を制御する室外機マイクロコン
ピュータ、前記室内機マイクロコンピュータ、および、
室外機マイクロコンピュータ間にデータを送受信するデ
ータ送受信部を含有している。
Further, the control means 30 is applied with the DC voltage output from the DC power supply means 10 to initialize the air conditioner, and of course, the driving operation means 20.
A microcomputer for controlling the overall operation of the air conditioner in accordance with the operating conditions inputted by the control means 30, the control means 30 being an indoor unit microcomputer for controlling the indoor unit and an outdoor unit microcomputer for controlling the outdoor unit. The indoor unit microcomputer, and
It contains a data transceiver that transmits and receives data between the outdoor unit microcomputers.

【0016】室内温度感知手段40は、前記運転操作手
段20により使用者の設定した温度Tsで室内温度を制
御して前記空気調和機の冷暖房運転を行うよう図示のな
い吸入口を通して吸入される室内空気の温度Trを感知
して前記制御手段30に出力する。
The room temperature sensing means 40 controls the room temperature at the temperature Ts set by the user by the driving operation means 20 to carry out the cooling / heating operation of the air conditioner so that the room air is sucked in through a suction port (not shown). The temperature Tr of the air is sensed and output to the control means 30.

【0017】また、電流設定手段50は、前記空気調和
機の運転時に使用者所望の圧縮機71の駆動電流Is
(圧縮機の運転周波数を変換すべき基準電流値)を設定
して前記制御手段30に出力するものであって、該電流
設定手段50は電子の使用量にしたがって前記圧縮機7
1の駆動電流13A、15A、17Aを使用者が任意に
決定して設定する。
Further, the current setting means 50 is a driving current Is of the compressor 71 desired by the user during the operation of the air conditioner.
A reference current value for converting the operating frequency of the compressor is set and output to the control means 30. The current setting means 50 causes the compressor 7 to operate according to the amount of electrons used.
The user arbitrarily determines and sets the drive currents 13A, 15A, 17A of 1.

【0018】また、整流手段60は、前記交流電源入力
端1から供給される商用交流電源の電源電圧が入力され
て直流電圧に全波整流されて出力し、圧縮機駆動手段7
0は、前記制御手段30から出力される制御信号により
圧縮機71を駆動するよう前記整流手段60から出力さ
れる直流電圧を可変電圧、および、可変周波数の3相交
流電源に逆変換して前記圧縮機71の運転周波数を変換
させるインバータ回路である。
Further, the rectifying means 60 receives the power source voltage of the commercial AC power source supplied from the AC power source input terminal 1, full-wave rectifies the DC voltage, and outputs the DC voltage.
0 is a control signal output from the control unit 30 to drive the compressor 71 to convert the DC voltage output from the rectification unit 60 to a variable voltage and a variable-frequency three-phase AC power source, and reversely converts the DC voltage. It is an inverter circuit that converts the operating frequency of the compressor 71.

【0019】また、図において、電流感知手段80は前
記圧縮機駆動手段70により駆動される圧縮機71の変
化する消費電流を検出して前記制御手段30に出力し、
表示手段90は前記制御手段30の制御により使用者の
入力した運転条件を表示することは勿論、前記空気調和
機の運転状態、および、動作エラーを表示する。
Further, in the figure, the current sensing means 80 detects the varying current consumption of the compressor 71 driven by the compressor driving means 70 and outputs it to the control means 30.
The display means 90 not only displays the operating conditions input by the user under the control of the control means 30, but also displays the operating state of the air conditioner and the operation error.

【0020】以下、上記のごとく構成された空気調和機
の運転制御装置、および、その方法の作用、効果につい
て説明する。図3は、本発明による空気調和機の運転制
御動作順を示すフローチャートであり、図3においてS
はステップを示す。
The operation and effect of the operation control device for the air conditioner constructed as above and the method therefor will be described below. FIG. 3 is a flow chart showing the operational control operation sequence of the air conditioner according to the present invention, where S in FIG.
Indicates a step.

【0021】まず、空気調和機に電源が印加されると、
交流電源入力端1から供給される商用交流電源の電源電
圧が整流手段60から入力されて直流電圧に全波整流さ
れて圧縮機駆動手段70に出力し、直流電源手段10で
は前記交流電源入力端1から供給される商用交流電源の
電源電圧を前記空気調和機の駆動に必要な所定の直流電
圧に変換してそれぞれの駆動回路、および、制御手段3
0に出力する。
First, when power is applied to the air conditioner,
The power supply voltage of the commercial AC power supply supplied from the AC power supply input terminal 1 is input from the rectifying means 60, full-wave rectified into a DC voltage, and output to the compressor driving means 70. 1 to convert the power supply voltage of the commercial AC power supply into a predetermined DC voltage necessary for driving the air conditioner, and drive circuits for each of them and the control means 3
Output to 0.

【0022】したがって、ステップS1では前記直流電
源手段10から出力される直流電圧が制御手段30から
入力されて前記空気調和機を初期化させ、ステップS2
では運転操作手段20に使用者所望の運転条件(冷房、
暖房、清浄、除湿など)、および、設定温度を前記制御
手段30に入力する。
Therefore, in step S1, the DC voltage output from the DC power supply means 10 is input from the control means 30 to initialize the air conditioner, and in step S2
Then, the driving operation means 20 is provided with driving conditions desired by the user (cooling,
(Heating, cleaning, dehumidification, etc.) and the set temperature are input to the control means 30.

【0023】ついで、ステップS3では使用者所望の圧
縮機71の駆動電流(以下、設定電流という)を電流設
定手段50により設定し、ステップS4では図示のない
吸入口を通して吸入される室内空気の温度Trを室内温
度感知手段40から感知して制御手段30に出力する。
Then, in step S3, the drive current (hereinafter referred to as set current) of the compressor 71 desired by the user is set by the current setting means 50, and in step S4, the temperature of the room air sucked through an intake port (not shown). Tr is sensed from the room temperature sensing means 40 and output to the control means 30.

【0024】これにより、ステップS5で制御手段30
は、前記運転操作手段20により入力された設定温度T
sと室内温度感知手段40により感知された室内温度T
rとの差にしたがって圧縮機71の運転周波数を決定す
る。
As a result, the control means 30 is operated in step S5.
Is the set temperature T input by the driving operation means 20.
s and the room temperature T sensed by the room temperature sensing means 40
The operating frequency of the compressor 71 is determined according to the difference with r.

【0025】前記圧縮機71の運転周波数が決定される
と、ステップS6で前記制御手段30はその決定された
運転周波数にしたがって圧縮機71を駆動するための制
御信号を圧縮機駆動手段70に出力する。
When the operating frequency of the compressor 71 is determined, the control means 30 outputs a control signal for driving the compressor 71 to the compressor driving means 70 in accordance with the determined operating frequency in step S6. To do.

【0026】したがって、前記圧縮機駆動手段70で
は、整流手段60から出力される直流電圧を可変電圧、
および、可変周波数の3相交流電源に逆変換して前記制
御手段30で決定された運転周波数にしたがって圧縮機
71を駆動させる。
Therefore, in the compressor driving means 70, the DC voltage output from the rectifying means 60 is changed to a variable voltage,
Further, the compressor 71 is driven in accordance with the operating frequency determined by the control means 30 by converting the variable frequency into a three-phase alternating current power source.

【0027】この際、ステップS7では前記圧縮機駆動
手段70により駆動される圧縮機71の変化する直流変
動量を電流感知手段80から感知して、その感知された
電流データIを制御手段30に出力し、ステップS8で
は前記電流感知手段80により感知された電流データI
が制御手段30にあらかじめ設定されている限界電流デ
ータ(Imax、約、20A)より小なるかを判別す
る。
At this time, in step S7, the varying DC fluctuation amount of the compressor 71 driven by the compressor driving means 70 is sensed from the current sensing means 80, and the sensed current data I is sent to the control means 30. Output, and in step S8, the current data I sensed by the current sensing means 80.
Is smaller than the limit current data (Imax, about 20 A) preset in the control means 30.

【0028】前記ステップS8での判別の結果、電流感
知手段80により感知された電流データIが限界電流デ
ータImaxより小の場合(YESのとき)には、前記
圧縮機71の駆動時に消費される電流が正常電流である
ため、ステップS9では前記電流感知手段80により感
知された電流データIが電流設定手段50により設定さ
れた設定電流Is以上なるかを判別する。
As a result of the determination in step S8, if the current data I sensed by the current sensing means 80 is smaller than the limit current data Imax (when YES), it is consumed when the compressor 71 is driven. Since the current is a normal current, it is determined in step S9 whether the current data I sensed by the current sensing means 80 is equal to or greater than the set current Is set by the current setting means 50.

【0029】前記ステップS9での判別の結果、電流デ
ータIが設定電流Is以上でない場合(NOのとき)に
は、ステップS10に進んで前記電流感知手段80によ
り感知された電流データIが電流設定手段50により設
定された設定電流Isから1を減算した電流値I1以上
であるかを判別する。
As a result of the determination in step S9, if the current data I is not equal to or more than the set current Is (NO), the process proceeds to step S10 and the current data I sensed by the current sensing means 80 is the current setting. It is determined whether the current value I1 obtained by subtracting 1 from the set current Is set by the means 50 is greater than or equal to I1.

【0030】前記ステップS10での判別の結果、電流
データIが電流値I1以上の場合(YESのとき)に
は、ステップS11に進んで前記圧縮機駆動手段70で
は制御手段30の制御により圧縮機71の現在の運転周
波数にしたがって圧縮機71を駆動させつつ前記ステッ
プS7に戻ってステップS7以下の動作を繰返し行う。
As a result of the determination in step S10, if the current data I is greater than or equal to the current value I1 (YES), the process proceeds to step S11, and the compressor driving means 70 controls the compressor by the control means 30. While the compressor 71 is being driven in accordance with the current operating frequency of 71, the process returns to step S7, and the operations in and after step S7 are repeated.

【0031】すなわち、室内機から運転周波数を高めよ
との制御信号を出力しても、室外機では現在の運転周波
数をそのまま保持して前記圧縮機71を駆動させる。
That is, even if a control signal for increasing the operating frequency is output from the indoor unit, the outdoor unit keeps the current operating frequency as it is and drives the compressor 71.

【0032】一方、前記ステップS8での判別の結果、
前記電流感知手段80により感知された電流データIが
限界電流データImaxより小でない場合(NOのと
き)には、圧縮機71の駆動時に消費される電流が過電
流状態であるため、ステップS81では前記制御手段3
0の制御により表示手段90を介して過電流の発生を表
わす“過電流”を表示する。
On the other hand, as a result of the discrimination in step S8,
If the current data I sensed by the current sensing unit 80 is not smaller than the limit current data Imax (NO), the current consumed when the compressor 71 is driven is in the overcurrent state, and thus in step S81. The control means 3
By the control of 0, the "overcurrent" indicating the occurrence of the overcurrent is displayed through the display means 90.

【0033】ついで、ステップS82で前記制御手段3
0は圧縮機71の過熱を防止するよう圧縮機71の駆動
を停止するための制御信号を圧縮機駆動手段70に出力
する。
Then, in step S82, the control means 3
0 outputs a control signal for stopping the driving of the compressor 71 to the compressor driving means 70 so as to prevent overheating of the compressor 71.

【0034】したがって、前記圧縮機駆動手段70では
制御手段30の制御にしたがって整流手段60から出力
される直流電圧を遮断して圧縮機71を停止させ、空気
調和機の運転を停止しつつ動作を終了する。
Therefore, the compressor driving means 70 cuts off the DC voltage output from the rectifying means 60 according to the control of the control means 30 to stop the compressor 71, thereby stopping the operation of the air conditioner. finish.

【0035】また、前記ステップS9での判別の結果、
前記電流感知手段80により感知された電流データIが
設定電流Is以上の場合(YESのとき)には、ステッ
プS91に進んで前記圧縮機駆動手段70は、電流感知
手段80により感知された電流データIが設定電流Is
から2を減算した電流値になる時まで、制御手段30の
制御にしたがって圧縮機71の運転周波数を5秒ごとに
1Hzずつ減少させて前記圧縮機71の運転周波数を変
換させつつ前記ステップS7に戻ってステップS7以下
の動作を繰返し行う。
Further, as a result of the discrimination in step S9,
If the current data I sensed by the current sensing means 80 is equal to or more than the set current Is (YES), the process proceeds to step S91, and the compressor driving means 70 causes the current data sensed by the current sensing means 80 to be detected. I is the set current Is
Until the current value is obtained by subtracting 2 from the above, the operating frequency of the compressor 71 is decreased by 1 Hz every 5 seconds under the control of the control means 30 to convert the operating frequency of the compressor 71 to step S7. Returning to this, the operations in and after step S7 are repeated.

【0036】また、前記ステップS10での判別の結
果、前記電流感知手段80により感知された電流データ
Iが電流設定手段50により設定された設定電流Isか
ら1を減算した電流値I1以上でない場合(NOのと
き)には、ステップS101に進んで前記圧縮機駆動手
段70は、制御手段30で決定された運転周波数にした
がって圧縮機71を駆動させつつ前記ステップS7に戻
ってステップS7以下の動作を繰返し行う。
Further, as a result of the discrimination in step S10, if the current data I sensed by the current sensing means 80 is not more than the current value I1 obtained by subtracting 1 from the set current Is set by the current setting means 50 ( (NO), the process proceeds to step S101, and the compressor driving means 70 drives the compressor 71 in accordance with the operating frequency determined by the control means 30 and returns to step S7 to perform the operations of step S7 and the subsequent steps. Repeat.

【0037】すなわち、室内機から運転周波数を高める
とか、低めよとかの指示をすれば、室外機では前記室内
機から指示した運転周波数にしたがって前記圧縮機71
を駆動させる。
That is, if an instruction to increase or decrease the operating frequency is issued from the indoor unit, the outdoor unit will operate the compressor 71 according to the operating frequency instructed from the indoor unit.
Drive.

【0038】[0038]

【発明の効果】上述のように、本発明による空気調和機
の運転制御装置、および、その方法によれば、圧縮機の
駆動時に変化する消費電流を設定電流と比較して前記圧
縮機の運転周波数を変化させることにより、消費電流が
突然に増加したときの圧縮機の過熱を防止できるのみな
らず、内部回路、および、部品の損傷を防止し、機器の
安全が保障できるという優れた効果を有する。
As described above, according to the air conditioner operation control apparatus and the method thereof according to the present invention, the consumed current that changes when the compressor is driven is compared with the set current, and the compressor is operated. By changing the frequency, not only the compressor can be prevented from overheating when the current consumption suddenly increases, but also the internal circuit and parts can be prevented from being damaged, and the safety of the device can be guaranteed. Have.

【図面の簡単な説明】[Brief description of drawings]

【図1】 従来による空気調和機の制御ブロック図であ
る。
FIG. 1 is a control block diagram of a conventional air conditioner.

【図2】 本発明の一実施例による空気調和機の運転制
御装置の制御ブロック図である。
FIG. 2 is a control block diagram of an operation control device for an air conditioner according to an embodiment of the present invention.

【図3】 本発明による空気調和機の運転制御動作順を
示すフローチャートである。
FIG. 3 is a flowchart showing an operation control operation sequence of the air conditioner according to the present invention.

【符号の説明】[Explanation of symbols]

10 直流電源駆動 20 運転操作手段 40 室内温度感知手段 50 電流設定手段 60 整流手段 70 圧縮機駆動手段 71 圧縮機 80 電流感知手段 90 表示手段 10 DC power supply drive 20 Driving operation means 40 Indoor temperature sensing means 50 Current setting means 60 Rectification means 70 Compressor driving means 71 Compressor 80 Current sensing means 90 Display means

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 交流電源入力端から入力される商用交流
電圧を直流電圧に全波整流する整流手段と、該整流手段
から出力される直流電圧を3相交流電源に逆変換して圧
縮機の運転周波数を変換する圧縮機駆動手段とからなる
空気調和機において、 前記圧縮機駆動手段により駆動される圧縮機の駆動電流
を設定する電流設定手段と、前記圧縮機駆動手段により
駆動される圧縮機の消費電流を感知する電流感知手段
と、該電流感知手段により感知された消費電流データ、
および、前記電流設定手段により設定された駆動電流デ
ータとを比較して過電流による前記圧縮機の過熱を防止
するよう前記圧縮機の運転周波数を制御する制御手段と
を具備してなることを特徴とする空気調和機の運転制御
装置。
1. A rectifying means for full-wave rectifying a commercial AC voltage input from an AC power supply input terminal into a DC voltage, and a DC voltage output from the rectifying means is inversely converted into a three-phase AC power supply for a compressor. An air conditioner comprising a compressor drive means for converting an operating frequency, wherein a current setting means for setting a drive current of a compressor driven by the compressor drive means and a compressor driven by the compressor drive means Current sensing means for sensing current consumption of, and current consumption data sensed by the current sensing means,
And a control means for comparing the drive current data set by the current setting means and controlling the operating frequency of the compressor to prevent overheating of the compressor due to overcurrent. An air conditioner operation control device.
【請求項2】 設定温度、および、圧縮機の設定電流を
入力するデータ入力ステップと、該データ入力ステップ
から入力された設定温度、および、室内温度との差にし
たがって前記圧縮機の運転周波数を決定する運転周波数
決定ステップと、該運転周波数決定手段で決定された運
転周波数にしたがって駆動する前記圧縮機の消費電流を
感知する電流感知ステップと、該電流感知ステップによ
り感知された消費電流が制御手段に既設定された限界電
流以下であるかを判別する限界電流判別ステップと、該
限界電流判別ステップから判別された消費電流が限界電
流以下であれば、前記電流感知ステップにより感知され
た消費電流、および、前記データ入力ステップから入力
された設定電流を比較して前記圧縮機の運転周波数を変
換する運転周波数変換ステップとを具備してなることを
特徴とする空気調和機の運転制御方法。
2. A data input step of inputting a set temperature and a set current of the compressor, and an operating frequency of the compressor according to a difference between the set temperature input from the data input step and the room temperature. An operating frequency determining step for determining, a current sensing step for sensing a consumption current of the compressor driven according to the operating frequency determined by the operating frequency determining means, and a consumption current sensed by the current sensing step for controlling the controlling means. If the limit current determining step of determining whether the current is less than or equal to the preset limit current, and the current consumption determined from the current limiting step is less than or equal to the current limit, the current consumption sensed by the current sensing step, And an operating frequency change for converting the operating frequency of the compressor by comparing the set current input from the data input step. An operation control method for an air conditioner, comprising:
【請求項3】 前記限界電流判別ステップから判別され
た消費電流が限界電流より大なれば、前記制御手段の制
御にしたがって圧縮機を停止させることを特徴とする請
求項2記載の空気調和機の運転制御方法。
3. The air conditioner according to claim 2, wherein the compressor is stopped under the control of the control means if the consumed current determined in the limiting current determining step is larger than the limiting current. Operation control method.
【請求項4】 前記電流感知ステップから感知された消
費電流が前記データ入力ステップから入力された設定電
流以上であれば、前記圧縮機の運転周波数を減少させる
ことを特徴とする請求項2記載の空気調和機の運転制御
方法。
4. The operating frequency of the compressor is reduced if the current consumption sensed from the current sensing step is equal to or higher than the set current inputted from the data input step. Air conditioner operation control method.
【請求項5】 前記電流感知ステップから感知された消
費電流が前記データ入力ステップから入力された設定電
流より小で、その設定電流から1を減算した電流値以上
であれば、前記圧縮機の運転周波数を現在状態に保持す
ることを特徴とする請求項2記載の空気調和機の運転制
御方法。
5. The operation of the compressor if the consumption current sensed from the current sensing step is smaller than the set current input from the data input step and is equal to or larger than a current value obtained by subtracting 1 from the set current. The operation control method for an air conditioner according to claim 2, wherein the frequency is maintained in the present state.
【請求項6】 前記電流感知ステップにより感知された
消費電流が前記データ入力ステップから入力された設定
電流から1を減算した電流値より小であれば、前記制御
手段の制御により圧縮機の運転周波数を変化させること
を特徴とする請求項2記載の空気調和機の運転制御方
法。
6. If the consumption current sensed by the current sensing step is smaller than the current value obtained by subtracting 1 from the set current input from the data input step, the operating frequency of the compressor is controlled by the control means. The air conditioner operation control method according to claim 2, wherein
JP7162660A 1994-06-28 1995-06-28 Equipment and method of controlling operation of air conditioner Pending JPH0861247A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019940015016A KR0156695B1 (en) 1994-06-28 1994-06-28 Operating control device and method of airconditioner
KR199415016 1994-06-28

Publications (1)

Publication Number Publication Date
JPH0861247A true JPH0861247A (en) 1996-03-08

Family

ID=19386532

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7162660A Pending JPH0861247A (en) 1994-06-28 1995-06-28 Equipment and method of controlling operation of air conditioner

Country Status (2)

Country Link
JP (1) JPH0861247A (en)
KR (1) KR0156695B1 (en)

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WO2008111737A1 (en) * 2007-03-13 2008-09-18 Lg Electronics Inc. Method for controlling compressor of air conditioner
CN107084473A (en) * 2017-03-30 2017-08-22 广东美的制冷设备有限公司 compressor control method and device
US10767881B2 (en) 2017-03-30 2020-09-08 Gd Midea Air-Conditioning Equipment Co., Ltd. Method and device for controlling a compressor

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JP2008061393A (en) * 2006-08-31 2008-03-13 Mitsubishi Electric Corp Inverter device
WO2008111737A1 (en) * 2007-03-13 2008-09-18 Lg Electronics Inc. Method for controlling compressor of air conditioner
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