JPH05231698A - Centralized control device for air conditioner - Google Patents

Centralized control device for air conditioner

Info

Publication number
JPH05231698A
JPH05231698A JP4035488A JP3548892A JPH05231698A JP H05231698 A JPH05231698 A JP H05231698A JP 4035488 A JP4035488 A JP 4035488A JP 3548892 A JP3548892 A JP 3548892A JP H05231698 A JPH05231698 A JP H05231698A
Authority
JP
Japan
Prior art keywords
current
setting means
current value
suppression
air conditioner
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
JP4035488A
Other languages
Japanese (ja)
Inventor
Tsutomu Nakamura
中村　　勉
Kenichiro Miura
賢一郎 三浦
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4035488A priority Critical patent/JPH05231698A/en
Publication of JPH05231698A publication Critical patent/JPH05231698A/en
Pending legal-status Critical Current

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  • Air Conditioning Control Device (AREA)

Abstract

PURPOSE:To eliminate the OFF-operation of an excess current protecting device at the time of starting the operation of air conditioners and supplying power to other electric appliances by conducting the suppressed and the return operations of a plurality of air conditioners on the basis of comparison between an output from a suppressed current setting means and that from a current detecting means and of comparison between an output from a return current setting means and that from the current detecting means. CONSTITUTION:The title device has a suppressed current setting means 24 for setting a current value which reduces the operation frequency of air conditioners, a current value which stops the operation of compressors, a current value which stops the operation of an air conditioner, and a current value which stops the operation of a plurality of air conditioners, respectively. A CPU 9 controls the suppressed and the return operations of a plurality of air conditioners on the basis of comparison between an output from a return current setting means 25 for setting a return current value which resumes the operation of the air conditioners, and an output from a CT circuit 12 for detecting two-system current values as a vector composite value and of comparison between an output from the suppressed current setting means 24 and an output from the CT circuit 12. According to this arrangement, an OFF-operation such as the protection of an excess current at the time of starting operation and the like can be eliminated.

Description

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

【０００１】[0001]

【産業上の利用分野】本発明は複数の空気調和機の能力
を集中制御する空気調和機の集中制御装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner centralized control device for centrally controlling the capabilities of a plurality of air conditioners.

【０００２】[0002]

【従来の技術】近年、マイクロコンピュータを使って制
御を行うものの増加とともに、一台の集中制御装置で複
数の被制御装置を制御するニューメディア時代の到来が
間近であるといった風潮が高まりつつある。そして、家
庭の中にもその波は押し寄せ、空気調和機においてもそ
の集中制御装置を利用しようという状況が高まってきて
いる。2. Description of the Related Art In recent years, with the increase in the number of devices that control using a microcomputer, the trend of the new media era in which a single centralized control device controls a plurality of controlled devices is approaching. Then, the waves are rushing into the home, and the situation is increasing that the centralized control device is used in the air conditioner.

【０００３】一方、家庭内の電力供給側では、空気調和
機および空気調和機以外の負荷増設にともなう負荷ピー
クに対応すべく供給設備の増強が必要となるが、現実は
電力供給設備に対して負荷稼働率および負荷使用特性の
差による事情で、過電流保護装置や電流制限器が作動す
るなど需要家の便益を阻害する状態が発生している。ま
た、電気を供給する電力会社特有の電力供給方法の差、
たとえば幹線用として一般の過電流保護装置に加え、電
流制限器が使用される地域がある。On the other hand, on the power supply side in the home, it is necessary to reinforce the supply equipment in order to cope with the load peak due to the load increase of the air conditioner and the load other than the air conditioner. Due to the difference in load utilization rate and load usage characteristics, there are situations in which the benefits of consumers are hindered, such as the operation of overcurrent protection devices and current limiters. In addition, the difference in the power supply method peculiar to electric power companies that supply electricity,
For example, there are areas where current limiters are used in addition to general overcurrent protection devices for main lines.

【０００４】これら過電流保護装置と電流制限器の保護
動作の違いについて述べると、たとえば単相３線式にお
ける過電流保護装置の動作では、各ラインごと独立に電
流検出を行い、該当するラインにおける過電流保護装置
にて規定される電流値を超過すると過電流保護動作を行
う。また、電流制限器の動作は、２つのライン電流のベ
クトル合成の電流値が、電流制限器にて規定される電流
値を超過すると過電流保護動作を行うものである。The difference between the protection operations of the overcurrent protection device and the current limiter will be described. For example, in the operation of the overcurrent protection device in the single-phase three-wire system, the current is detected independently for each line and the corresponding line is detected. When the current value specified by the overcurrent protection device is exceeded, overcurrent protection operation is performed. The operation of the current limiter is to perform an overcurrent protection operation when the current value of the vector combination of the two line currents exceeds the current value specified by the current limiter.

【０００５】[0005]

【発明が解決しようとする課題】このように上記従来の
空気調和機では、一般家庭などで空気調和機本体以外の
機器の電化製品がフルに使用されている際や、負荷の厳
しい空調条件下で、圧縮機を起動させた場合や、周波数
変換装置搭載空気調和機を運転開始した場合、過電流保
護装置に流れる電流値がその許容量を超えてオフ動作
し、空気調和機使用時のフィーリングを悪くさせたり、
また空気調和機以外の電化製品が停止したりするなど、
使用上の不便を起こしていた。As described above, in the above-described conventional air conditioner, when the electric appliances of devices other than the air conditioner main body are fully used in a general home or the like, or under the air-conditioning conditions under severe load. When the compressor is started or the air conditioner equipped with a frequency converter is started, the current value flowing through the overcurrent protection device exceeds the allowable amount and turns off. Make the ring worse,
Also, electric appliances other than the air conditioner may stop,
It caused inconvenience in use.

【０００６】本発明は上記従来の問題を解決するもの
で、空気調和機および空気調和機以外の機器の電流値の
大小にかかわらず、空気調和機の運転開始時および空気
調和機以外の電化製品の電源投入時など過電流保護装置
などのオフ動作を無くすことができる空気調和機の集中
制御装置を提供することを目的とするものである。The present invention solves the above-mentioned conventional problems. Regardless of the magnitude of the current value of the air conditioner and the devices other than the air conditioner, the electric appliances at the start of operation of the air conditioner and other than the air conditioner It is an object of the present invention to provide a centralized control device for an air conditioner that can eliminate the off operation of an overcurrent protection device when the power is turned on.

【０００７】[0007]

【課題を解決するための手段】上記課題を解決するため
に本発明の空気調和機の集中制御装置は、過電流保護手
段に流れる負荷電流を少なくとも２系統の電源ラインの
電流値のベクトル合成値として検出する電流検出手段
と、空気調和機の運転周波数を低下させる電流値を設定
する第１の抑制電流設定手段と、少なくとも圧縮機を停
止させる電流値を設定する第２の抑制電流設定手段と、
空気調和機の運転を停止させる電流値を設定する第３の
抑制電流設定手段と、空気調和機複数台の運転を停止さ
せる電流値を設定する第４の抑制電流設定手段と、前記
第１〜４の抑制電流設定手段による抑制電流設定にて抑
制運転した空気調和機の運転を再開させる復帰電流値を
設定し、この復帰電流値にて再開した空気調和機の運転
を一定期間監視し、一定期間内に再度第１〜第４の抑制
電流設定手段のいずれかで定める電流値を超過したとき
に、前記復帰電流値を順に上昇させて復帰電流値を設定
する複数の復帰電流設定手段と、各空気調和機がいずれ
の電源ラインに接続されているかを設定する配線系統設
定手段と、前記配線系統設定手段にて設定された同一系
統の電源ラインに接続される複数の空気調和機相互間の
作動優先順位を設定する作動優先設定手段と、前記電流
検出手段の出力と第１〜第４の抑制電流設定手段を個々
に前記同一系統の電源ライン毎に比較する第１〜第４の
比較手段と、前記電流検出手段の出力と複数の復帰電流
設定手段を個々に前記同一系統の電源ライン毎に比較す
る第５〜第ｎ（ｎは６以上の自然数）の比較手段と、前
記過電流保護手段の定格電流または許容電流を設定する
許容電流設定手段と、前記設定した過電流保護手段の定
格電流値または許容電流値を基準に設定許容電流値を可
変して前記第１〜第４の抑制電流設定手段に供給し、前
記第１〜第４の抑制電流設定手段の抑制電流値を補正す
る許容電流補正手段と、前記第１〜第ｎの比較手段の出
力に基づいて前記作動優先順設定手段で設定した作動優
先順位に従って複数台の空気調和機を抑制運転および復
帰運転制御する制御手段とを備えたものである。In order to solve the above-mentioned problems, a centralized control device for an air conditioner according to the present invention uses a vector composite value of the current values of at least two power supply lines for the load current flowing through the overcurrent protection means. A current detection unit that detects the current, a first suppression current setting unit that sets a current value that reduces the operating frequency of the air conditioner, and a second suppression current setting unit that sets at least a current value that stops the compressor. ,
Third suppressing current setting means for setting a current value for stopping the operation of the air conditioner, fourth suppressing current setting means for setting a current value for stopping the operation of the plurality of air conditioners, and the first to the first. A return current value for restarting the operation of the air conditioner that has been suppressed and operated is set by the suppression current setting means of No. 4, and the restarted operation of the air conditioner is monitored at this return current value for a certain period of time. A plurality of return current setting means for setting the return current value by sequentially increasing the return current value when the current value determined by any one of the first to fourth suppression current setting means is exceeded again within the period. Wiring system setting means for setting which power supply line each air conditioner is connected to, and between a plurality of air conditioners connected to the same power supply line set by the wiring system setting means Set operation priority Operation priority setting means, first to fourth comparison means for individually comparing the output of the current detection means and the first to fourth suppression current setting means for each power supply line of the same system, and the current detection Fifth to nth (n is a natural number of 6 or more) comparing means for individually comparing the output of the means and a plurality of return current setting means for each power supply line of the same system, and the rated current of the overcurrent protection means or A permissible current setting means for setting a permissible current, and a set permissible current value is varied on the basis of the rated current value or the permissible current value of the set overcurrent protection means and supplied to the first to fourth suppression current setting means. However, the operation set by the operation priority order setting means based on the outputs of the allowable current correction means for correcting the suppression current values of the first to fourth suppression current setting means and the first to nth comparison means. Multiple air conditioners according to priority In which a control means for inhibiting operation and restoration operation control.

【０００８】また、本発明の空気調和機の集中制御装置
は、主幹の過電流保護手段に流れる負荷電流を少なくと
も２系統の電源ラインの電流値のベクトル合成値として
検出する主電流検出手段と、少なくとも空気調和機が接
続される分岐用の過電流保護装置を流れる負荷電流を検
出する分岐電流検出手段と、空気調和機の運転周波数を
低下させる電流値を設定する第１の抑制電流設定手段
と、少なくとも圧縮機を停止させる電流値を設定する第
２の抑制電流設定手段と、空気調和機の運転を停止させ
る電流値を設定する第３の抑制電流設定手段と、空気調
和機複数台の運転を停止させる電流値を設定する第４の
抑制電流設定手段と、空気調和機の運転周波数を低下さ
せる電流値を設定する第５の抑制電流設定手段と、少な
くとも圧縮機を停止させる電流値を設定する第６の抑制
電流設定手段と、空気調和機の運転を停止させる電流値
を設定する第７の抑制電流設定手段と、前記第１〜４の
抑制電流設定手段による抑制電流設定にて抑制運転した
空気調和機の運転を再開させる第１の復帰電流値を設定
し、この第１の復帰電流値にて再開した空気調和機の運
転を一定期間監視し、一定期間内に再度第１〜第４の抑
制電流設定手段のいずれかで定める電流値を超過したと
きに、前記第１の復帰電流値より順に復帰電流値を上昇
させて復帰電流値を設定する複数の第１の復帰電流設定
手段と、前記第５〜第７の抑制電流設定手段にて抑制運
転した空気調和機の運転を再開させる第２の復帰電流値
を設定し、この第２の復帰電流値にて再開した空気調和
機の運転を一定期間監視し、一定期間内に再度第５〜第
７の抑制電流設定手段のいずれかで定める電流値を超過
したときに、前記第２の復帰電流値より順に復帰電流値
を上昇させて復帰電流値を設定する複数の第２の復帰電
流設定手段と、各空気調和機がいずれの電源ラインに接
続されているかを設定する配線系統設定手段と、前記配
線系統設定手段にて設定された同一系統の電源ラインに
接続される複数の空気調和機相互間の作動優先順位を設
定する作動優先設定手段と、前記主電流検出手段の出力
と第１〜第４の抑制電流設定手段を個々に前記同一系統
の電源ライン毎に比較する第１〜第４の比較手段と、前
記分岐電流検出手段の出力と第５〜第７の抑制電流設定
手段を個々に比較する第５〜第７の比較手段と、前記主
電流検出手段の出力と複数の第１の復帰電流設定手段の
出力を個々に前記同一系統の電源ライン毎に比較する複
数の第８の比較手段と、前記分岐電流検出手段の出力と
複数の第２の復帰電流設定手段を個々に比較する複数の
第９の比較手段と、前記主幹および分岐用の過電流保護
手段の定格電流または許容電流を設定する許容電流設定
手段と、前記設定した主幹の過電流保護手段の定格電流
または許容電流値を基準に設定許容電流値を可変して前
記第１〜第４の抑制電流設定手段に供給し、前記第１〜
第４の抑制電流設定手段の抑制電流値を補正するととも
に、前記設定した分岐用の過電流保護手段の定格電流ま
たは許容電流値を基準に設定許容電流値を可変して前記
第５〜第７の抑制電流設定手段に供給し、前記第５〜第
７の抑制電流設定手段の抑制電流値を補正可能な許容電
流補正手段と、前記第１〜第７の比較手段の出力およ
び、複数の第８および第９の比較手段の出力に基づいて
前記作動優先順設定手段で設定した作動優先順位に従っ
て複数台の空気調和機を抑制運転および復帰運転制御す
る制御手段とを備えたものである。Further, the centralized control device for an air conditioner of the present invention comprises a main current detecting means for detecting the load current flowing through the overcurrent protection means of the main trunk as a vector composite value of the current values of at least two power supply lines, At least a branch current detection unit that detects a load current flowing through an overcurrent protection device for a branch to which an air conditioner is connected, and a first suppression current setting unit that sets a current value that lowers the operating frequency of the air conditioner. , Second suppression current setting means for setting at least a current value for stopping the compressor, third suppression current setting means for setting a current value for stopping the operation of the air conditioner, and operation of a plurality of air conditioners The fourth suppression current setting means for setting a current value for stopping the operation, the fifth suppression current setting means for setting a current value for decreasing the operating frequency of the air conditioner, and at least the compressor is stopped. Sixth suppression current setting means for setting a current value to be applied, a seventh suppression current setting means for setting a current value for stopping the operation of the air conditioner, and suppression currents by the first to fourth suppression current setting means. The first return current value for restarting the operation of the air conditioner that has been suppressed in the setting is set, and the operation of the air conditioner restarted at this first return current value is monitored for a certain period of time and within the certain period of time. A plurality of first reset current values are set by increasing the return current value in order from the first return current value when the current value determined by any of the first to fourth suppression current setting means is exceeded again. And a second return current value for resuming the operation of the air conditioner that has been suppressed by the fifth to seventh suppression current setting means. Monitor the restarted operation of the air conditioner for a certain period of time and When a current value determined by any one of the fifth to seventh suppression current setting means is exceeded again, a plurality of first reset current values are set by increasing the return current value in order from the second return current value. 2 return current setting means, a wiring system setting means for setting which power supply line each air conditioner is connected to, and a power supply line of the same system set by the wiring system setting means. The operation priority setting means for setting the operation priority among a plurality of air conditioners, the output of the main current detection means and the first to fourth suppression current setting means are individually compared for each power supply line of the same system. The first to fourth comparing means, the fifth to seventh comparing means for individually comparing the output of the branch current detecting means and the fifth to seventh suppressing current setting means, and the main current detecting means. Output and output of a plurality of first return current setting means A plurality of eighth comparing means for individually comparing the power for each power supply line of the same system, and a plurality of ninth comparing means for individually comparing the output of the branch current detecting means and the plurality of second return current setting means. Comparing means, allowable current setting means for setting the rated current or allowable current of the overcurrent protection means for the main and branch, and setting allowable based on the rated current or allowable current value of the set main current overcurrent protection means The current value is varied and supplied to the first to fourth suppression current setting means, and the first to fourth suppression current setting means are supplied.
In addition to correcting the suppression current value of the fourth suppression current setting means, the set allowable current value is varied on the basis of the set rated current or allowable current value of the branching overcurrent protection means, and the fifth to seventh values are set. To the suppression current setting means to correct the suppression current values of the fifth to seventh suppression current setting means, the outputs of the first to seventh comparison means, and the plurality of first to seventh comparison means. Control means for controlling the suppression operation and the return operation of the plurality of air conditioners in accordance with the operation priority order set by the operation priority order setting means based on the outputs of the eighth and ninth comparing means.

【０００９】さらに、本発明の空気調和機の集中制御装
置は上記構成に加えて、少なくとも２系統の電源ライン
の電流をベクトル合成した値を表示するとともに、前記
ベクトル合成した電流値および許容電流値を用いて電流
の使用率を表示可能な表示手段を備えたものである。Further, in addition to the above configuration, the centralized control device for an air conditioner of the present invention displays a vector-combined value of the currents of at least two power supply lines, and the vector-combined current value and allowable current value. Is provided with a display means capable of displaying the current usage rate.

【００１０】[0010]

【作用】上記構成により、抑制電流値および復帰電流値
の設定に関しては、第１の抑制電流設定手段で空気調和
機の運転周波数を低下させる電流値を設定し、第２の抑
制電流設定手段で少なくとも圧縮機を停止させる電流値
を設定し、第３の抑制電流設定手段で空気調和機の運転
を停止させる電流値を設定し、第４の抑制電流設定手段
で空気調和機複数台の運転を停止させる電流値を設定
し、第５の抑制電流設定手段で空気調和機の運転周波数
を低下させる電流値を設定し、第６の抑制電流設定手段
で少なくとも圧縮機を停止させる電流値を設定し、さら
に第７の抑制電流設定手段で空気調和機の運転を停止さ
せる電流値を設定し、これら第１〜４の抑制電流設定手
段による抑制電流設定にて抑制運転した空気調和機の運
転を再開させる第１の復帰電流値を設定し、この第１の
復帰電流値にて再開した空気調和機の運転を一定期間監
視し、一定期間内に再度第１〜第４の抑制電流設定手段
のいずれかで定める電流値を超過したときに、第１の復
帰電流値より順に復帰電流値を上昇させて復帰電流値を
複数の第１の復帰電流設定手段において設定し、また、
これら第５〜第７の抑制電流設定手段にて抑制運転した
空気調和機の運転を再開させる第２の復帰電流値を設定
し、この第２の復帰電流値にて再開した空気調和機の運
転を一定期間監視し、一定期間内に再度第５〜第７の抑
制電流設定手段のいずれかで定める電流値を超過したと
きに、前記第２の復帰電流値より順に電流値を上昇させ
て復帰電流値を複数の第２の復帰電流設定手段において
設定する。また、主電流検出手段は、主幹の過電流保護
手段に流れる負荷電流を少なくとも２系統の電源ライン
の電流値のベクトル合成値として検出し、また、分岐電
流検出手段は、少なくとも空気調和機が接続される分岐
用の過電流保護手段を流れる負荷電流を検出し、この主
電流検出手段の出力と第１〜第４の抑制電流設定手段の
出力を第１〜第４の抑制電流設定手段で個々に同一系統
の電源ライン毎に比較し、また、分岐電流検出手段の出
力と第５〜第７の抑制電流設定手段を第５〜第７の比較
手段で個々に比較し、さらに、主電流検出手段の出力と
複数の第１の復帰電流設定手段の出力を複数の第８の比
較手段で個々に同一系統の電源ライン毎に比較し、さら
に、分岐電流検出手段の出力と複数の第２の復帰電流設
定手段を複数の第９の比較手段で個々に比較し、各空気
調和機には、たとえば単相３線式で電源線が住宅などに
引込まれた時、３線のうち１線を中性線にして他の２線
で２系統の電源供給ライン（Ｌ1 系とＬ2 系という）が
構成されることになるが、各空気調和機がいずれの電源
ラインに接続されているかを配線系統設定手段で設定
し、この配線系統設定手段にて設定された同一系統の電
源ラインに接続される複数の空気調和機相互間の作動優
先順位を作動優先設定手段で設定し、主幹または分岐用
の過電流保護手段の定格電流または許容電流を許容電流
設定手段で設定し、この設定した過電流保護手段の定格
電流または許容電流値を基準に設定許容電流値を許容電
流補正手段で可変して第１〜第７の抑制電流設定手段に
供給する。上記第１〜第７の比較手段の出力および、複
数の第８および第９の比較手段の出力に基づいて作動優
先順設定手段で設定した作動優先順位に従って複数台の
空気調和機を過電流のレベルに応じて制御手段で抑制運
転および復帰運転制御するので、空気調和機および空気
調和機以外の機器の電流値の大小にかかわらず、空気調
和機の運転開始時および、空気調和機以外の電化製品の
電源投入時の過電流保護手段のオフ動作は解消される。With the above structure, with respect to the setting of the suppression current value and the return current value, the first suppression current setting means sets the current value for lowering the operating frequency of the air conditioner, and the second suppression current setting means sets it. At least a current value for stopping the compressor is set, a current value for stopping the operation of the air conditioner is set by the third suppression current setting means, and a plurality of air conditioners are operated by the fourth suppression current setting means. A current value for stopping is set, a current value for reducing the operating frequency of the air conditioner is set by the fifth suppressing current setting means, and a current value for stopping at least the compressor is set by the sixth suppressing current setting means. The current value for stopping the operation of the air conditioner is further set by the seventh suppression current setting means, and the operation of the air conditioner that has been suppressed by the suppression current setting by the first to fourth suppression current setting means is restarted. First to let A return current value is set, the operation of the air conditioner restarted at this first return current value is monitored for a certain period, and the current determined again by any of the first to fourth suppression current setting means within the certain period. When the value exceeds the value, the return current value is increased in order from the first return current value and the return current value is set in the plurality of first return current setting means, and
A second return current value for restarting the operation of the air conditioner that has been suppressed by the fifth to seventh suppression current setting means is set, and the operation of the air conditioner restarted at the second return current value. Is monitored for a certain period of time, and when the current value defined by any of the fifth to seventh suppression current setting means is again exceeded within a certain period of time, the current value is sequentially increased from the second recovery current value to recover. The current value is set by the plurality of second return current setting means. Further, the main current detection means detects the load current flowing through the overcurrent protection means of the main trunk as a vector composite value of the current values of the power lines of at least two systems, and the branch current detection means is connected to at least an air conditioner. The load current flowing through the branching overcurrent protection means is detected, and the outputs of the main current detection means and the first to fourth suppression current setting means are individually detected by the first to fourth suppression current setting means. And comparing the output of the branch current detection means and the fifth to seventh suppression current setting means individually by the fifth to seventh comparison means, and further detecting the main current. The output of the means and the outputs of the plurality of first return current setting means are individually compared by the plurality of eighth comparing means for each power supply line of the same system, and further, the output of the branch current detecting means and the plurality of second currents. The reset current setting means is provided with a plurality of ninth comparison hands. Each of the air conditioners has a single-phase three-wire system and the power supply line is drawn into a house, etc. The power supply line (referred to as L 1 system and L 2 system) of will be configured. The wiring system setting means sets which power supply line each air conditioner is connected to, and the wiring system setting is performed. Set the operation priority among the multiple air conditioners connected to the power line of the same system set by the operation priority setting means, and set the rated current or allowable current of the overcurrent protection means for the main or branch. Is set by the permissible current setting means, and the set permissible current value is changed by the permissible current correction means on the basis of the set rated current or permissible current value of the overcurrent protection means. Supply. Based on the outputs of the first to seventh comparing means and the outputs of the plurality of eighth and ninth comparing means, the plurality of air conditioners are set to overcurrent in accordance with the operation priority order set by the operation priority order setting means. Since the control operation controls the suppression operation and the return operation according to the level, regardless of the magnitude of the current value of the air conditioner and devices other than the air conditioner, electrification at the start of the air conditioner and electrification other than the air conditioner The off operation of the overcurrent protection means when the power of the product is turned on is eliminated.

【００１１】また、少なくとも２系統の電源ラインの電
流をベクトル合成した値を表示するとともに、このベク
トル合成した電流値および許容電流値を用いて電流の使
用率を表示することができるので、電流の使用率を基に
過電流保護手段の許容電流範囲内で抑制電流値を自在に
可変することで省エネルギー運転が可能となる。Further, since it is possible to display the vector-combined value of the currents of at least two power supply lines and to display the current usage rate by using the vector-combined current value and the permissible current value, Energy saving operation becomes possible by freely changing the suppression current value within the allowable current range of the overcurrent protection means based on the usage rate.

【００１２】[0012]

【実施例】以下、本発明の一実施例について図面を参照
しながら説明する。図１は本発明の一実施例における空
気調和機の集中制御構成を示すブロック図である。図１
において、複数の空気調和機操作用端末器１は複数台の
空気調和機２とこれら空気調和機２を制御する集中制御
装置３とを電気的に接続している。また、複数台の空気
調和機２にはそれぞれ空気調和機操作用ワイヤードリモ
コン４が接続され、各空気調和機２はこの空気調和機操
作用ワイヤードリモコン４により操作される。さらに、
空気調和機操作用端末器１ａは無線式（ワイヤレス方
式）空気調和機２ａと無線式に接続されており、空気調
和機操作用ワイヤレスリモコン５により操作される。こ
のように、空気調和機２、２ａと集中制御装置３を接続
する空気調和機操作用端末器１、１ａは、各空気調和機
２、２ａと電線などで電気的に接続する有線式のものに
限らず電波、光などを用いる無線式でも行え接続作業の
簡素化が図られる。単相３線式の主幹の商用電源ライン
を示す各幹線６ａ，６ｂ，６ｃは分岐用の過電流保護装
置７を介して空気調和機２、２ａに接続され、空気調和
機２、２ａに過電流保護装置７を介して電源供給され
る。集中制御装置３は複数の空気調和機操作用端末器
１、１ａを制御して空気調和機２、２ａを過電流レベル
に応じて抑制運転および復帰運転制御する構成である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a centralized control configuration of an air conditioner according to an embodiment of the present invention. Figure 1
In the above, the plurality of air conditioner operation terminals 1 electrically connect the plurality of air conditioners 2 and the centralized control device 3 that controls these air conditioners 2. Further, the air conditioner operating wired remote controllers 4 are connected to the plurality of air conditioners 2, and each air conditioner 2 is operated by the air conditioner operating wired remote controller 4. further,
The air conditioner operating terminal 1a is wirelessly connected to the wireless (wireless) air conditioner 2a and is operated by the air conditioner operating wireless remote controller 5. In this way, the air conditioner operating terminals 1, 1a for connecting the air conditioners 2, 2a and the centralized control device 3 are of a wire type that are electrically connected to the air conditioners 2, 2a by electric wires or the like. The connection work can be simplified as well as a wireless method using radio waves or light. Each of the main lines 6a, 6b, 6c showing the single-phase three-wire type mains commercial power supply line is connected to the air conditioners 2, 2a via an overcurrent protection device 7 for branching, and is connected to the air conditioners 2, 2a. Power is supplied via the current protection device 7. The centralized control device 3 is configured to control a plurality of air conditioner operation terminals 1 and 1a to control the air conditioners 2 and 2a according to the overcurrent level.

【００１３】図２および図３は本発明の一実施例におけ
る空気調和機の集中制御装置の回路図である。図２およ
び図３において、集中制御装置３の信号送受信部８は、
複数の空気調和機操作用端末器１、１ａと集中制御装置
３の中央処理装置（以下ＣＰＵという）９を伝送線路10
ａ、10ｂにより結合している。また、メモリ部11はプロ
グラム用メモリとデータ用メモリから構成されている。2 and 3 are circuit diagrams of a centralized control device for an air conditioner according to an embodiment of the present invention. 2 and 3, the signal transmitting / receiving unit 8 of the centralized control device 3 is
A plurality of air conditioner operating terminals 1, 1a and a central processing unit (hereinafter referred to as CPU) 9 of the centralized control device 3 are connected to a transmission line 10.
They are linked by a and 10b. The memory unit 11 is composed of a program memory and a data memory.

【００１４】一方、空気調和機２、２ａは幹線６ａ−６
ｂ間および幹線６ｂ−６ｃ間にそれぞれ接続されてお
り、主電流検出手段としてのＣＴ回路12は主幹の過電流
保護手段13に流れる負荷電流を少なくとも２系統の幹線
６ａ、６ｃの電流値のベクトル合成値として検出する。
このＣＴ回路12は、各住宅につながる機器の負荷電流の
総合値を検出し、電流検出するカレントトランス14ａ、
14ｂと、このカレントトランス14ａ、14ｂの出力を整流
する整流器15ａ、15ｂと、これら整流器15ａ、15ｂの整
流出力の両端に接続されている平滑用コンデンサー16
ａ、16ｂおよび放電用抵抗17ａ、17ｂとから構成されて
いる。さらに、結線切換手段18、19、20、21は結線切換
部駆動部22によりカレントトランス14ａ、14ｂの結線を
切換え、図３に示すように、幹線用として一般の過電流
保護装置13が設置されている時は、これら切換手段18、
19、20は全てＮＣ側へ接続されて設定され、そして、切
換部21についてはオープンの状態に設定されるように制
御される。また、幹線用として電流制限器が設定されて
いる時は、切換部の18、19、20はＮＯ側へ接続され、そ
して、切換部21はオン状態に設定されるように制御され
る。On the other hand, the air conditioners 2 and 2a are trunk lines 6a-6.
The CT circuit 12 serving as the main current detecting means is connected between b and between the main lines 6b and 6c, and the load current flowing through the overcurrent protection means 13 of the main trunk is a vector of the current values of at least two main lines 6a and 6c. Detect as a combined value.
The CT circuit 12 detects a total value of load currents of devices connected to each house and detects a current, a current transformer 14a,
14b, rectifiers 15a and 15b for rectifying the outputs of the current transformers 14a and 14b, and a smoothing capacitor 16 connected to both ends of the rectified outputs of the rectifiers 15a and 15b.
a and 16b and discharge resistors 17a and 17b. Further, the connection switching means 18, 19, 20 and 21 switch the connection of the current transformers 14a and 14b by the connection switching portion drive section 22, and as shown in FIG. 3, a general overcurrent protection device 13 is installed for the main line. Switch means 18,
19 and 20 are all connected and set to the NC side, and the switching unit 21 is controlled to be set to the open state. Further, when the current limiter is set for the main line, the switching units 18, 19 and 20 are connected to the NO side, and the switching unit 21 is controlled to be set to the ON state.

【００１５】また、配線系統設定手段23は、上記商用電
源に接続される空気調和機２、２ａが商用電源の幹線６
ａ−６ｂ間および幹線６ｂ−６ｃ間のいずれの系統の電
源ラインに接続されているかを選択し、少なくとも接続
される空気調和機２、２ａの台数と同じ数のスイッチが
配置されるものとする。ここで、カレントトランス14ａ
は、商用電源の幹線６ｂ−６ｃ間に接続される負荷電流
検出用であり、また、カレントトランス14ｂは、電源の
幹線６ａ−６ｂ間に接続される負荷電流検出用であっ
て、配線系統設定手段23による設定は、商用電源の幹線
６ａ−６ｂ間および幹線６ｂ−６ｃ間の系統に空気調和
機２、２ａが接続される際に行われ、この配線系統設定
手段23によるスイッチの状態はＣＰＵ９を介して読み取
られる。Further, in the wiring system setting means 23, the air conditioners 2 and 2a connected to the commercial power source are main lines 6 of the commercial power source.
It is assumed that it is selected which of the power supply lines between a-6b and the mains 6b-6c is connected, and at least the same number of switches as the number of connected air conditioners 2, 2a are arranged. .. Here, the current transformer 14a
Is for load current detection connected between the main lines 6b-6c of the commercial power source, and the current transformer 14b is for load current detection connected between the main lines 6a-6b of the power source. The setting by the means 23 is performed when the air conditioners 2, 2a are connected to the system between the main lines 6a-6b and the main line 6b-6c of the commercial power source, and the state of the switch by the wiring system setting means 23 is the CPU 9 Read through.

【００１６】さらに、抑制電流設定手段24は住宅の配線
に流す電流を規制し、復帰電流設定手段25は抑制運転状
態の空気調和機２、２ａを元の運転状態に復帰させる。
これら抑制電流値および復帰電流値の設定は、直流電圧
を、抵抗24ａ〜24ｈの抵抗分割、および抵抗25ａ〜25ｃ
とＶＲ1 〜ＶＲ3 の抵抗分割で、抑制および復帰電流値
に等しい電圧を作り出す。Further, the suppression current setting means 24 regulates the current flowing through the wiring of the house, and the return current setting means 25 returns the air conditioners 2, 2a in the suppressed operation state to the original operation state.
To set the suppression current value and the return current value, the DC voltage is set by dividing the resistances 24a to 24h and the resistances 25a to 25c.
And resistance division of VR1 to VR3 produces a voltage equal to the suppression and return current values.

【００１７】すなわち、第１の抑制電流値を決定する電
圧を抵抗24ａ、24ｂの交点より、第２の抑制電流値を決
定する電圧を抵抗24ｃ、24ｄの交点より、第３の抑制電
流値を決定する電圧を抵抗24ｅ、24ｆの交点より、さら
に、第４の抑制電流値を決定する電圧を抵抗24ｇ、24ｈ
の交点よりそれぞれ取り出す。この第１の抑制電流値は
空気調和機の運転周波数を低下させるために、第２の抑
制電流設定値は少なくとも圧縮機を停止させるために、
第３の抑制電流設定値は空気調和機の運転を停止させる
ために、さらに、第４の抑制電流設定値は空気調和機複
数台の運転を停止させるために用いる。また、第１の復
帰電流値を決定する電圧を抵抗25ａ、ＶＲ１の交点よ
り、第２の復帰電流値または、前記第１の復帰電流値よ
り順に上昇させた第１ａの復帰電流値を決定する電圧を
抵抗25ｂ、ＶＲ２の交点より、さらに、第ｎａの復帰電
流値を決定する電圧を抵抗25ｃ、ＶＲ３の交点よりそれ
ぞれ取り出す。That is, the voltage that determines the first suppression current value is obtained from the intersection of the resistors 24a and 24b, and the voltage that determines the second suppression current value is obtained from the intersection of the resistors 24c and 24d. From the intersection of the resistors 24e and 24f, the voltage to be determined is further determined by the resistors 24g and 24h.
Take each from the intersection. In order to lower the operating frequency of the air conditioner with the first suppression current value, and to stop the compressor at least with the second suppression current setting value,
The third suppression current set value is used to stop the operation of the air conditioner, and the fourth suppression current set value is used to stop the operation of the plurality of air conditioners. Further, the voltage for determining the first return current value is determined from the intersection of the resistors 25a and VR1 to the second return current value or the return current value of the 1a which is sequentially increased from the first return current value. A voltage is extracted from the intersection of the resistors 25b and VR2, and a voltage that determines the return current value of the nath is extracted from the intersection of the resistors 25c and VR3.

【００１８】これら抑制電流値および復帰電流値を決定
する各レベルの電圧は、各系統Ｌ1、Ｌ2 ごとに備わ
る、各レベルごとに比較器26、27の−側入力端子に接続
され、また、これら比較器26、27の＋側入力端子には、
主電流検出手段としてのＣＴ回路12の各系統の整流器15
ａ、15ｂの出力がそれぞれ接続されている。The voltage of each level that determines the suppression current value and the return current value is connected to the-side input terminals of the comparators 26 and 27 provided for each system L 1 and L 2 for each level, and , The positive side input terminals of these comparators 26 and 27 are
Rectifier 15 of each system of CT circuit 12 as main current detection means
The outputs of a and 15b are respectively connected.

【００１９】さらに、運転モード表示部28は、この比較
手段26の各出力により各空気調和機２、２ａを停止、ま
たは、少なくとも圧縮機を停止、運転周波数の減速など
空気調和機の各抑制運転状態の表示を行う。たとえば、
運転周波数の減速時および少なくとも圧縮機を停止させ
た時は空気調和機に対応する表示部を点滅させ、また通
常運転時は表示部を点灯、さらに空気調和機停止時は表
示部を消灯させる。Further, the operation mode display unit 28 stops each of the air conditioners 2 and 2a according to each output of the comparison means 26, or at least stops the compressor, decelerates the operation frequency, and each suppress operation of the air conditioner. Display the status. For example,
The display unit corresponding to the air conditioner is blinked when the operating frequency is decelerated or at least when the compressor is stopped, the display unit is turned on during normal operation, and the display unit is turned off when the air conditioner is stopped.

【００２０】一方、分岐電流検出手段としてのＣＴ回路
29は、少なくとも１台の空気調和機２が接続される分岐
用の過電流保護装置７を流れる負荷電流を検出するもの
で、カレントトランス30と、このカレントトランス30の
出力を整流する整流器31と、この整流器31の整流出力の
両端に接続される平滑用コンデンサ32および放電用抵抗
33とから構成されている。また、この分岐用の過電流保
護装置７に流れる負荷電流を抑制させる抑制電流設定値
手段34を設け、第１ｂの抑制電流値を決定する電圧を抵
抗34ａ、34ｂの交点より、第２ｂの抑制電流値を決定す
る電圧を抵抗34ｃ、34ｄの交点より、さらに、第３ｂの
抑制電流値を決定する電圧を抵抗34ｅ、34ｆの交点より
それぞれ取り出す。この第１ｂの抑制電流設定値は空気
調和機の運転周波数を低下させるために、第２ｂの抑制
電流設定値は少なくとも圧縮機を停止させる電流値を設
定するために、さらに、第３ｂの抑制電流設定値は空気
調和機の運転を停止させるために用いる。さらに、復帰
電流設定手段35は、抑制運転状態の空気調和機を元の運
転状態へ復帰させる。この復帰電流値の設定は、直流電
圧を抵抗35ａ〜35ｃおよびＶＲ4 〜ＶＲ6 の抵抗分割で
復帰電流値に等しい電圧を作り出す。すなわち、第１ｂ
の復帰電流値を決定する電圧を抵抗35ａ、ＶＲ４の交点
より、第２ｂの復帰電流値または、第１ｂの復帰電流値
より順に上昇させた第１ｂｂの復帰電流値を決定する電
圧を抵抗35ｂ、ＶＲ５の交点より、第ｎｂｂの復帰電流
値を決定する電圧を抵抗35ｃ、ＶＲ６の交点よりそれぞ
れ取り出す。これら抑制電流値および復帰電流値を決定
する各レベルの電圧は、各レベル毎に比較器36、37の−
側入力端子に入力され、また、これら比較器36、37の＋
側入力端子にはＣＴ回路29の各系統の整流器31の出力が
入力される。On the other hand, a CT circuit as branch current detecting means
Reference numeral 29 is for detecting a load current flowing through a branching overcurrent protection device 7 to which at least one air conditioner 2 is connected, and includes a current transformer 30 and a rectifier 31 for rectifying the output of the current transformer 30. , Smoothing capacitor 32 and discharge resistor connected to both ends of the rectified output of this rectifier 31
It consists of 33 and. Further, the suppression current setting value means 34 for suppressing the load current flowing in the overcurrent protection device 7 for branching is provided, and the voltage for determining the suppression current value of the 1b is controlled by the intersection of the resistors 34a, 34b to suppress the 2b. The voltage that determines the current value is extracted from the intersection of the resistors 34c and 34d, and the voltage that determines the 3bth suppression current value is extracted from the intersection of the resistors 34e and 34f. The 1b suppression current setting value is for decreasing the operating frequency of the air conditioner, the 2b suppression current setting value is for setting at least the current value for stopping the compressor, and the 3b suppression current is further set. The set value is used to stop the operation of the air conditioner. Further, the return current setting means 35 returns the air conditioner in the suppressed operation state to the original operation state. The setting of this return current value produces a voltage equal to the return current value by dividing the DC voltage by resistors 35a to 35c and VR4 to VR6. That is, 1b
The voltage that determines the return current value of the resistor 35a, and the voltage that determines the return current value of the 1bb which is increased from the intersection point of VR4 in order of the return current value of the 2b or the return current value of the 1b is resistor 35b, From the intersection of VR5, the voltage that determines the nbbth return current value is extracted from the intersection of the resistors 35c and VR6. The voltage at each level that determines the suppression current value and the return current value is the negative voltage of the comparators 36 and 37 for each level.
It is input to the side input terminal, and + of these comparators 36 and 37
The output of the rectifier 31 of each system of the CT circuit 29 is input to the side input terminal.

【００２１】また、電圧区分設定手段38は空気調和機
２、２ａに供給する商用電源の電圧種類をそれぞれの空
気調和機２、２ａについて設定する。すなわち、電圧区
分設定手段38は入力電圧の違いによる空気調和機２、２
ａに対応してそれぞれ設定され、たとえば100V/200V の
設定を行う。200V入力の空気調和機２は電源ライン６ｂ
−６ｃ間に接続され、空気調和機にて消費される電流
は、Ｌ1 、Ｌ2 の両系統に流れる。したがって、100V入
力の空気調和機のごとく、電源ラインＬ1 およびＬ 2 の
いずれに接続されるかを設定する配線系統設定手段23は
特に必要としない。また、200V入力の空気調和機は、電
源ラインＬ1 およびＬ2 に流れる電流を検出するＣＴト
ランス14ａ、14ｂの双方の出力から後述する抑制運転が
行われることになる。The voltage division setting means 38 is an air conditioner.
2 and 2a the commercial power supply voltage type
Set for the air conditioners 2, 2a. That is, the voltage section
The minute setting means 38 is the air conditioner 2 or 2 depending on the difference in input voltage.
It is set corresponding to a, for example, 100V / 200V
Make settings. Air conditioner 2 with 200V input is power line 6b
Current consumed by the air conditioner connected between -6c
Is L1, L2It flows to both systems. Therefore, input 100V
Power line L, like a power air conditioner1And L 2of
The wiring system setting means 23 for setting which is connected
Not particularly required. In addition, the 200V input air conditioner
Source line L1And L2CT to detect the current flowing in
From the outputs of both the lances 14a and 14b, the suppression operation described later can be performed.
Will be done.

【００２２】さらに、室温設定手段39は、空気調和機
２、２ａの運転室温を設定し、空気調和機２、２ａと１
対１に対応する複数個のキースイッチ（図示せず）が配
置される。また、作動優先度設定手段40は、配線系統設
定手段23にて設定した、同一配線系統に接続された空気
調和機間で、作動優先度の設定を行う。この作動優先度
設定手段40の設定スイッチＡ，Ｂ，Ｃ，Ｄは、それぞれ
空気調和機２、２ａと対応して設けられている。たとえ
ば各設定スイッチＡ，Ｂ，Ｃ，Ｄは、数Ｂｉｔのコード
スイッチから成り、これら設定スイッチＡ，Ｂ，Ｃ，Ｄ
にて空気調和機２、２ａの優先度が決定される。Further, the room temperature setting means 39 sets the operating room temperature of the air conditioners 2, 2a, and the air conditioners 2, 2a and 1 are set.
A plurality of key switches (not shown) corresponding to pair 1 are arranged. Further, the operation priority setting means 40 sets the operation priority among the air conditioners set by the wiring system setting means 23 and connected to the same wiring system. The setting switches A, B, C, D of the operation priority setting means 40 are provided corresponding to the air conditioners 2, 2a, respectively. For example, each setting switch A, B, C, D comprises a code switch of several bits, and these setting switches A, B, C, D
At, the priority of the air conditioners 2, 2a is determined.

【００２３】上記構成により、まず、主幹側の過電流保
護装置13に流れる負荷電流制御について説明する。比較
器26、27の各出力はＣＰＵ９を介して読み取られ、ＣＴ
回路12にて検出される住宅の配線に流れる電流値が、第
４の抑制電流値を設定する第４の抑制電流設定手段の出
力より大きい場合、複数の空気調和機２、２ａを住宅の
配線に接続される系統毎に一斉停止の信号を信号送受信
部８を介して各空気調和機操作用端末器１、１ａへ伝送
する。また、ＣＴ回路12にて検出される住宅の配線に流
れる電流値が、第１の復帰電流設定手段の出力より小さ
い場合、一斉停止の信号を出力した空気調和機に対して
信号送受部８を介して各空気調和機操作用端末器１、１
ａへ元の運転状態へ復帰させる信号を作動優先度の高い
空気調和機より順に出力する。With the above structure, first, the control of the load current flowing through the overcurrent protection device 13 on the master side will be described. Each output of the comparators 26 and 27 is read via the CPU 9 and CT
When the value of the current flowing through the wiring of the house detected by the circuit 12 is larger than the output of the fourth suppression current setting means for setting the fourth suppression current value, the plurality of air conditioners 2, 2a are connected to the wiring of the house. A signal for simultaneous stop is transmitted to each air conditioner operating terminal device 1, 1a via the signal transmitting / receiving unit 8 for each system connected to. Further, when the value of the current flowing through the house wiring detected by the CT circuit 12 is smaller than the output of the first return current setting means, the signal transmission / reception unit 8 is set to the air conditioner that has output the simultaneous stop signal. Through each of the air conditioner operation terminals 1, 1
A signal for returning to the original operating state is output to the air conditioner in order from the air conditioner with the highest operation priority.

【００２４】ここで、信号送受信部８と空気調和機操作
用端末器１、１ａとは、伝送線路10ａ、10ｂを介して接
続されており、集中制御装置３側の信号送受信部８と、
空気調和機作用端末器１、１ａ間の信号授受が行われ
る。以下、第１〜３の抑制電流、および第２の復帰電流
設定手段についても同様の動作が行われ、以下、詳細に
述べる。Here, the signal transmitting / receiving unit 8 and the air conditioner operating terminals 1, 1a are connected via transmission lines 10a, 10b, and the signal transmitting / receiving unit 8 on the central control device 3 side,
Signals are exchanged between the air conditioner action terminals 1 and 1a. Hereinafter, similar operations are performed for the first to third suppression currents and the second return current setting means, which will be described in detail below.

【００２５】すなわち、抑制運転制御は、ＣＴ回路12に
て検出される住宅配線に流れる電流値が、第３の抑制電
流設定手段の出力より大きい場合、複数の空気調和機
２、２ａの中で、作動優先度の低い空気調和機より一定
周期順に、各電源ラインの系統毎に、ＣＴ回路12にて検
出される電流値が第３の抑制電流値以下になるまで空気
調和機を停止させる。また、ＣＴ回路12にて検出される
住宅の配線に流れる電流値が、第２の抑制電流設定手段
の出力より大きい場合、前記複数の空気調和機の中で、
作動優先度の低い空気調和機より一定周期順に、各電源
ラインの系統ごとに、ＣＴ回路12にて検出される電流値
が第２の抑制電流値以下になるまで空気調和機の少なく
とも圧縮機を停止させる。さらに、ＣＴ回路12にて検出
される住宅配線に流れる電流値が、第１の抑制電流値を
設定する第１の抑制電流設定手段の出力より大きい場
合、複数の空気調和機２、２ａの中で、作動優先度の低
い空気調和機より一定周期順に、各電源ラインの系統ご
とに、ＣＴ回路12にて検出される電流値が第１の抑制電
流値以下になるまで、周波数変換装置搭載空気調和機に
ついては、運転周波数を減速、また汎用の空気調和機に
ついては、少なくとも圧縮機を停止させる。That is, in the suppression operation control, when the value of the current flowing through the house wiring detected by the CT circuit 12 is larger than the output of the third suppression current setting means, among the plurality of air conditioners 2, 2a. The air conditioner is stopped for each power supply line system in order from the air conditioner having a lower operation priority until the current value detected by the CT circuit 12 becomes equal to or lower than the third suppression current value. Further, when the value of the current flowing through the house wiring detected by the CT circuit 12 is larger than the output of the second suppression current setting means, among the plurality of air conditioners,
At least the compressor of the air conditioner is operated until the current value detected by the CT circuit 12 becomes equal to or lower than the second suppression current value for each power supply line system in a fixed cycle order from the air conditioner having a lower operation priority. Stop. Further, when the value of the current flowing through the house wiring detected by the CT circuit 12 is larger than the output of the first suppression current setting means for setting the first suppression current value, among the plurality of air conditioners 2, 2a. Then, the air conditioner with a low operation priority is installed in a fixed cycle order until the current value detected by the CT circuit 12 becomes equal to or lower than the first suppression current value for each system of each power supply line until the frequency converter is installed. For the air conditioner, the operating frequency is reduced, and for a general-purpose air conditioner, at least the compressor is stopped.

【００２６】また、抑制運転後の復帰運転制御は、各電
源ラインの系統毎にＣＴ回路12にて検出される電流値
が、抑制運転した空気調和機の運転を再開させる電流値
を設定する第１の復帰電流設定手段の出力より小さい
時、複数の空気調和機の中で作動優先度の高い空気調和
機より一定周期順に、各電源ラインの系統ごとに、ＣＴ
回路12にて検出される電流値が第１の抑制電流設定手段
で定められる電流値以内の範囲になる台数分、空気調和
機の運転を再開させるが、第１の復帰電流設定手段にて
再開させた空気調和機の運転を一定期間監視し、一定期
間内に、再度、抑制電流設定手段１〜４のいずれかで定
められた電流値を超過した時に限り、直ちに再度低優先
の空気調和機順に一定周期で抑制運転を行うと共に、該
当する空気調和機の運転を再開させる復帰電流値を第１
の復帰電流値より大きい第２の復帰電流設定手段で定め
る復帰電流値に切換える。また、この復帰電流設定手段
25にて再開した空気調和機の運転を一定期間監視し、一
定期間内に再度、抑制電流設定手段１〜４のいずれかで
定める電流値を超過する度に第１の復帰電流設定手段で
定める電流値より順に上昇させた第１ａ〜第ｎａの複数
の復帰電流設定手段で定める復帰電流値に切換えてもよ
い。Further, in the return operation control after the suppression operation, the current value detected by the CT circuit 12 for each system of each power supply line sets the current value for restarting the operation of the suppressed air conditioner. When it is smaller than the output of the return current setting means of 1, the CT for each system of each power supply line is set in a fixed cycle order from the air conditioner having a higher operation priority among the plurality of air conditioners.
The operation of the air conditioner is restarted by the number of units in which the current value detected by the circuit 12 falls within the range of the current value determined by the first suppression current setting means, but restarted by the first return current setting means. The operation of the air conditioner is monitored for a certain period of time, and only when the current value determined by any of the suppression current setting means 1 to 4 is exceeded again within a certain period of time, the air conditioner of low priority is immediately re-established. The suppression operation is performed in a certain cycle in order, and the return current value for restarting the operation of the corresponding air conditioner is set to the first value.
The return current value determined by the second return current setting means which is larger than the return current value of is switched. Also, this reset current setting means
The operation of the air conditioner restarted at 25 is monitored for a fixed period of time, and again within the fixed period of time, the first return current setting unit sets the current value that is set by any one of the suppression current setting units 1 to 4 again. It is also possible to switch to the return current value determined by the plurality of 1a to na-th return current setting means that are sequentially increased from the current value.

【００２７】次に、分岐用の過電流保護装置７に流れる
負荷電流制御について説明する。比較器36、37の各出力
もＣＰＵ９を介して読み取られ、ＣＴ回路29にて検出さ
れる住宅配線に流れる電流値が、第３ｂの抑制電流設定
手段の出力より大きい場合、空気調和機を停止させる信
号を信号送受信部８を介して各空気調和機操作用端末器
１、１ａへ伝送し、また、ＣＴ回路29にて検出される住
宅配線に流れる電流値が、第１ｂの復帰電流設定手段の
出力より小さい場合、一斉停止の信号を出力した空気調
和機に対し、信号送受部８を介して各空気調和機操作用
端末器１、１ａへ元の運転状態へ復帰させる信号を出力
する。Next, the control of the load current flowing in the overcurrent protection device 7 for branching will be described. Each output of the comparators 36 and 37 is also read via the CPU 9, and when the current value flowing through the house wiring detected by the CT circuit 29 is larger than the output of the 3b suppression current setting means, the air conditioner is stopped. The signal for transmitting the signal to the respective air conditioner operating terminals 1, 1a via the signal transmitting / receiving unit 8, and the current value flowing in the house wiring detected by the CT circuit 29 is 1b return current setting means. When the output is smaller than the output of (1), a signal for returning to the original operating state is output to each of the air conditioner operating terminals 1 and 1a via the signal transmission / reception unit 8 for the air conditioner that has output the simultaneous stop signal.

【００２８】ここで、信号送受信部８と空気調和機操作
用端末器１、１ａとは、伝送線路10ａ、10ｂを介して接
続されて集中制御装置３の信号送受信部８と、空気調和
機操作用端末器１、１ａの信号授受が行われる。以下、
第１ｂ〜２ｂの抑制電流および第２ｂの復帰電流設定手
段についても同様の動作が行われ、以下、詳細に述べ
る。Here, the signal transmitting / receiving unit 8 and the air conditioner operating terminals 1, 1a are connected via transmission lines 10a, 10b, and the signal transmitting / receiving unit 8 of the centralized control device 3 and the air conditioner operating unit. Signals are exchanged between the terminals 1 and 1a for use. Less than,
The same operation is performed for the suppression currents 1b to 2b and the reset current setting means 2b, which will be described in detail below.

【００２９】すなわち、抑制運転制御は、ＣＴ回路29に
て検出される住宅配線に流れる電流値が、第２ｂの抑制
電流設定手段の出力より大きい場合、空気調和機の少な
くとも圧縮機を停止させる。また、ＣＴ回路29にて検出
される住宅配線に流れる電流値が第１ｂの抑制電流設定
手段の出力より大きい場合、周波数交換装置搭載空気調
和機については運転周波数を減速、また、汎用の空気調
和機については少なくとも圧縮機を停止させる。また、
抑制運転後の復帰制御は、各電源ラインの系統毎にＣＴ
回路29にて検出される電流値が、抑制運転した空気調和
機の運転を再開させる電流値を設定する第１ｂの復帰電
流設定手段の出力より小さいとき、空気調和機の運転を
再開させるが、第１ｂの復帰電流設定手段にて再開させ
た空気調和機の運転を一定期間監視し、一定期間内に、
再度、抑制電流設定手段１ｂ〜３ｂのいずれかで定めら
れた電流値を超過したときに限り、直ちに再度抑制運転
を行うとともに、該当する空気調和機の運転を再開させ
る復帰電流値が、第１ｂの復帰電流値より大きい第２ｂ
の復帰電流設定手段で定める値に切換える。また、復帰
電流設定手段にて再開した空気調和機の運転を一定期間
監視し、一定期間内に再度、抑制電流設定手段１ｂ〜３
ｂのいずれかで定める電流値を超過する度に第１ｂの復
帰電流設定手段で定める電流値より順に上昇させた第１
ｂｂ〜第ｎｂｂの複数の復帰電流設定手段で定める復帰
電流値に切換えてもよい。That is, the suppression operation control stops at least the compressor of the air conditioner when the value of the current flowing through the house wiring detected by the CT circuit 29 is larger than the output of the second b suppression current setting means. Further, when the value of the current flowing through the house wiring detected by the CT circuit 29 is larger than the output of the suppression current setting means of the 1bth, the operating frequency of the air conditioner equipped with the frequency switching device is reduced, and the general-purpose air conditioner is used. For machines, at least turn off the compressor. Also,
Recovery control after suppressed operation is performed by CT for each power line system.
When the current value detected by the circuit 29 is smaller than the output of the return current setting means of the 1b that sets the current value for restarting the operation of the air conditioner that has been suppressed, the operation of the air conditioner is restarted, The operation of the air conditioner restarted by the 1b return current setting means is monitored for a certain period, and within the certain period,
Only when the current value determined by any of the suppression current setting means 1b to 3b is exceeded again, the suppression current is immediately re-executed, and the return current value for restarting the operation of the corresponding air conditioner is 1b. 2b that is larger than the return current value of
Switch to the value determined by the reset current setting means of. Further, the operation of the air conditioner restarted by the return current setting means is monitored for a certain period of time, and the suppression current setting means 1b to 3 again within the certain period.
Each time the current value determined by either b is exceeded, the current value determined by the return current setting means of the 1b first is sequentially increased.
You may switch to the return current value defined by the plurality of return current setting means bb to nbb.

【００３０】一方、配線系統設定手段23は、複数の空気
調和機それぞれについて、電源ラインへの接続状態を設
定し、たとえば単相３線式で、電源線が住宅へ引込まれ
るとき、１本を中性線にして他の２本で２系統の電源供
給ラインが構成されることになるが、各空気調和機が上
記電源供給ライン（Ｌ1 ／Ｌ2 ）のいずれに接続された
かを設定する。On the other hand, the wiring system setting means 23 sets the connection state to the power supply line for each of the plurality of air conditioners, and is, for example, a single-phase three-wire system, and one when the power supply line is drawn into the house. The power supply line of two systems will be configured by the other two with the neutral line as the neutral line. Set which of the above power supply lines (L 1 / L 2 ) each air conditioner was connected to. To do.

【００３１】次に、200V入力の空気調和機の抑制運転お
よび復帰運転について述べる。200V入力の空気調和機
は、前記したごとく特に配線系統設定手段23にて設定す
る必要はない。したがって、この空気調和機は、ＣＴ回
路12にて検出され、さらに、比較手段26の各出力によ
り、空気調和機間で設定される作動優先度設定手段40に
て決定される作動優先順位に従って抑制および復帰運転
が行われる。この作動優先度設定手段40はＬ1 ，Ｌ2 の
各系統それぞれに設けられているため、Ｌ1 ，Ｌ2の２
系統で作動優先度が設定されることになるが、Ｌ1 およ
びＬ2 のいずれかの系統の設定値に従うことになる。Next, the suppression operation and the return operation of the 200V input air conditioner will be described. The air conditioner of 200V input need not be set by the wiring system setting means 23 as described above. Therefore, the air conditioner is detected by the CT circuit 12, and further suppressed by the outputs of the comparison means 26 in accordance with the operation priority order determined by the operation priority setting means 40 set between the air conditioners. And the return operation is performed. Since the operation priority setting means 40 is provided for each of the L 1 and L 2 systems, the operation priority setting means 40 is 2 for L 1 and L 2 .
Although the operation priority is set in the system, it follows the set value of either L 1 or L 2 .

【００３２】また、機種区分設定手段41は、運転周波数
変換装置搭載の空気調和機と運転周波数変換装置を搭載
していない空気調和機とを区分するものである。空気調
和機の抑制運転および復帰運転は前記したごとくの制御
が行われる。Further, the model classification setting means 41 distinguishes an air conditioner equipped with an operating frequency converter from an air conditioner not equipped with an operating frequency converter. The suppression operation and the return operation of the air conditioner are controlled as described above.

【００３３】さらに、許容電流設定手段42は、過電流保
護装置７、13の定格電流または許容電流の設定をし、た
とえば前記した値をＸ(A) としたとき、前記した第１〜
第４の抑制電流値手段にて設定される値は、前記したＸ
(A) の比率として設定する。また、補正電圧発生部43
は、過電流保護装置７、13の許容電流設定手段42で設定
した設定許容電流値を基準に許容電流を補正し、許容電
流補正手段44によって設定されて作り出され抑制電流設
定手段24に印加される。Further, the permissible current setting means 42 sets the rated current or the permissible current of the overcurrent protection devices 7 and 13, and, for example, when the above-mentioned value is X (A), the above-mentioned first to first
The value set by the fourth suppression current value means is X
Set as the ratio of (A). In addition, the correction voltage generator 43
Is corrected by the allowable current setting means 42 of the overcurrent protection devices 7 and 13 to correct the allowable current, and is set and produced by the allowable current correction means 44 and applied to the suppression current setting means 24. It

【００３４】さらに、運転モード表示部28は、住宅配線
に流れる電流値により抑制運転される各空気調和機の各
運転状態を、各空気調和機操作用端末器１、１ａに表示
し、たとえば運転周波数の減速および、少なくとも圧縮
機を停止させたときは空気調和機に対応する表示部を点
滅、通常運転時は表示部を点灯、また、空気調和機停止
時は表示部を消灯させる。また、許容電流設定値表示手
段45は過電流保護装置７、13の許容電流設定手段42で設
定された値を基準にたとえば０〜100 ％の範囲表示する
表示手段または、住宅配線に流れる少なくとも２系統か
ら成る配線系統の平均値を、過電流保護装置７、13の許
容電流設定値に更に許容電流補正を行った値に対する比
率を表示する手段である。さらに、電流表示手段46は、
住宅配線に流れる電流（Ｌ1 およびＬ2 ）を配線系統別
に表示する手段で、少なくとも配線系統別の計測値電流
を、または、少なくとも２系統からなる配線系統電流の
平均値を、または加算値を表示する手段、または住宅配
線に流れる電流を、過電流保護装置７、13の許容電流設
定値に対する比率〔使用率〕として配線系統別に表示す
る手段または、少なくとも２系統から成る電流の平均値
を、または加算値を過電流保護装置７、13の許容電流に
対する比率〔使用率〕として表示する手段、または住宅
配線に流れる電流を、過電流保護装置７、13の許容電流
設定値に更に許容電流補正を行った値に対する比率〔使
用率〕として表示する手段を示す。また、表示切換手段
47は電流表示内容の切換部であり、その表示内容は、表
示切換手段47にて切換えられて電流使用率表示部に表示
される。Further, the operation mode display section 28 displays the respective operating states of the respective air conditioners which are suppressed and operated by the value of the current flowing through the house wiring on the respective air conditioner operating terminals 1, 1a. When the frequency is reduced or at least the compressor is stopped, the display corresponding to the air conditioner blinks, the display is turned on during normal operation, and the display is turned off when the air conditioner is stopped. Further, the allowable current set value display means 45 is a display means for displaying a range of, for example, 0 to 100% based on the value set by the allowable current setting means 42 of the overcurrent protection devices 7 and 13, or at least 2 flowing in the house wiring. It is a means for displaying the ratio of the average value of the wiring system including the system to the value obtained by further performing the allowable current correction on the allowable current set value of the overcurrent protection devices 7 and 13. Further, the current display means 46 is
A means for displaying the currents (L 1 and L 2 ) flowing in the house wiring for each wiring system, and at least the measured value current for each wiring system, or the average value of the wiring system currents consisting of at least two systems, or the added value. A means for displaying, or a means for displaying the current flowing through the house wiring as a ratio [usage rate] to the allowable current setting value of the overcurrent protection devices 7 and 13 for each wiring system, or an average value of currents composed of at least two systems, Alternatively, a means for displaying the added value as a ratio [usage rate] to the allowable current of the overcurrent protection devices 7 and 13, or the allowable current correction of the current flowing through the house wiring to the allowable current set value of the overcurrent protection devices 7 and 13 The means for displaying as a ratio [usage rate] to the calculated value will be shown. Also, display switching means
Reference numeral 47 denotes a current display content switching section, and the display content is switched by the display switching means 47 and displayed on the current usage rate display section.

【００３５】[0035]

【発明の効果】以上のように本発明における空気調和機
の集中制御方式によれば、複数台の空気調和機および空
気調和機以外の電化製品が使用されている際など、過電
流保護手段としての過電流保護装置および電流制限器な
どに流れる電流値がその許容量を超えてオフ動作をし、
空気調和機使用時のフィーリングを悪化させたり、ま
た、空気調和機以外の電化製品が停止するなど、使用上
の不便を解消することができるものであり、以下にその
効果を記述する。As described above, according to the centralized control system for an air conditioner of the present invention, as an overcurrent protection means when a plurality of air conditioners and appliances other than the air conditioner are used. The current value flowing through the overcurrent protection device and the current limiter, etc. exceeds the allowable amount and turns off,
It is possible to eliminate inconveniences in use, such as deterioration of feeling when using the air conditioner and stopping of electric appliances other than the air conditioner. The effects are described below.

【００３６】1)過電流保護手段に過電流が流れた際、過
電流保護手段としての過電流保護装置および電流制限器
などをオフ動作させないため、単に空気調和機を停止さ
せるのではなく、過電流のレベルに応じた抑制運転を行
って、空気調和機の不用な停止運転の回数が少なく、空
気調和機のフィーリング感低下の防止を図ることができ
るものである。1) When an overcurrent flows through the overcurrent protection means, the overcurrent protection device and the current limiter as the overcurrent protection means are not turned off, so that the air conditioner is not simply stopped but By performing the suppression operation according to the level of the current, the number of unnecessary stop operations of the air conditioner is reduced, and it is possible to prevent the feeling of the air conditioner from being degraded.

【００３７】2)過電流保護手段としての過電流保護装置
および電流制限器などに過電流が流れた際、空気調和機
の抑制運転を行うことにより、空気調和機以外の電化製
品の不用な停止を防止することができるものである。 3)運転周波数変換装置搭載か否かの機種区分設定を行え
ば、過電流保護装置に過電流が流れた時、機種の異なる
空気調和機間の抑制運転を容易に行うことができるもの
である。2) When an overcurrent flows through the overcurrent protection device and the current limiter as the overcurrent protection means, the air conditioner is restrained to perform an unnecessary stop of electric appliances other than the air conditioner. Can be prevented. 3) By setting the model classification whether the operating frequency converter is installed or not, it is possible to easily perform suppression operation between different air conditioners when an overcurrent flows through the overcurrent protection device. ..

【００３８】4)家庭内などで使用される空気調和機の電
流容量および空気調和機以外の機器容量に応じて復帰電
流値を設定できるため、たとえば一旦抑制運転した空気
調和機の復帰動作電流値が家庭内の事情により自在に設
定することができるものである。4) Since the return current value can be set according to the current capacity of the air conditioner used at home or the like and the device capacity other than the air conditioner, for example, the return operation current value of the air conditioner that has been once suppressed and operated. Can be set freely according to the circumstances in the household.

【００３９】5)過電流保護手段の許容電流範囲内で、抑
制電流値を自在に可変でき、さらに電流の使用率および
許容電流値表示が行えるため、特に省エネルギー運転を
行う時などその効果は大きい。5) The suppression current value can be freely changed within the allowable current range of the overcurrent protection means, and the current usage rate and the allowable current value can be displayed, so that the effect is great especially in energy saving operation. ..

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

【図１】本発明の一実施例における空気調和機の集中制
御構成を示すブロック図である。FIG. 1 is a block diagram showing a centralized control configuration of an air conditioner according to an embodiment of the present invention.

【図２】本発明の一実施例における空気調和機の集中制
御装置の主に分岐側の制御部を示す回路図である。FIG. 2 is a circuit diagram mainly showing a control unit on a branch side of the centralized control device for an air conditioner in one embodiment of the present invention.

【図３】本発明の一実施例における空気調和機の集中制
御装置の主に主幹側の制御部を示す回路図である。FIG. 3 is a circuit diagram mainly showing a main controller of a centralized control device for an air conditioner according to an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１、１ａ 空気調和機操作用端末器 ２、２ａ 空気調和機 ３ 集中制御装置 ６ａ、６ｂ、６ｃ 商用電源線 ７ 分岐用過電流保護装置 ８ 信号送受信部 ９ ＣＰＵ 12、29 ＣＴ回路 13 主幹の過電流保護装置 24、34 抑制電流設定手段 25、35 復帰電流設定手段 26、36 比較器（抑制電流比較手段） 27、37 比較器（復帰電流比較手段） 40 作動優先順設定手段 42 許容電流設定手段 43 補正電圧発生部 44 許容電流補正手段 46 電流表示手段 1, 1a Air conditioner operation terminal device 2, 2a Air conditioner 3 Centralized control device 6a, 6b, 6c Commercial power supply line 7 Branching overcurrent protection device 8 Signal transmitter / receiver unit 9 CPU 12, 29 CT circuit 13 Current protector 24, 34 Suppressing current setting means 25, 35 Restoring current setting means 26, 36 Comparator (suppressing current comparing means) 27, 37 Comparator (restoring current comparing means) 40 Operation priority order setting means 42 Allowable current setting means 43 Correction voltage generator 44 Allowable current correction means 46 Current display means

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】過電流保護手段に流れる負荷電流を少なく
とも２系統の電源ラインの電流値のベクトル合成値とし
て検出する電流検出手段と、空気調和機の運転周波数を
低下させる電流値を設定する第１の抑制電流設定手段
と、少なくとも圧縮機を停止させる電流値を設定する第
２の抑制電流設定手段と、空気調和機の運転を停止させ
る電流値を設定する第３の抑制電流設定手段と、空気調
和機複数台の運転を停止させる電流値を設定する第４の
抑制電流設定手段と、前記第１〜４の抑制電流設定手段
による抑制電流設定にて抑制運転した空気調和機の運転
を再開させる復帰電流値を設定し、この復帰電流値にて
再開した空気調和機の運転を一定期間監視し、一定期間
内に再度第１〜第４の抑制電流設定手段のいずれかで定
める電流値を超過したときに、前記復帰電流値を順に上
昇させて復帰電流値を設定する複数の復帰電流設定手段
と、各空気調和機がいずれの電源ラインに接続されてい
るかを設定する配線系統設定手段と、前記配線系統設定
手段にて設定された同一系統の電源ラインに接続される
複数の空気調和機相互間の作動優先順位を設定する作動
優先設定手段と、前記電流検出手段の出力と第１〜第４
の抑制電流設定手段を個々に前記同一系統の電源ライン
毎に比較する第１〜第４の比較手段と、前記電流検出手
段の出力と複数の復帰電流設定手段を個々に前記同一系
統の電源ライン毎に比較する第５〜第ｎ（ｎは６以上の
自然数）の比較手段と、前記過電流保護手段の定格電流
または許容電流を設定する許容電流設定手段と、前記設
定した過電流保護手段の定格電流値または許容電流値を
基準に設定許容電流値を可変して前記第１〜第４の抑制
電流設定手段に供給し、前記第１〜第４の抑制電流設定
手段の抑制電流値を補正する許容電流補正手段と、前記
第１〜第ｎの比較手段の出力に基づいて前記作動優先順
設定手段で設定した作動優先順位に従って複数台の空気
調和機を抑制運転および復帰運転制御する制御手段とを
備えた空気調和機の集中制御装置。1. A current detection means for detecting a load current flowing through an overcurrent protection means as a vector composite value of current values of power lines of at least two systems, and a current value for lowering an operating frequency of an air conditioner. No. 1 suppression current setting means, at least second suppression current setting means for setting a current value for stopping the compressor, and third suppression current setting means for setting a current value for stopping the operation of the air conditioner, Resuming the operation of the air conditioner that has been suppressed by the fourth suppression current setting means for setting the current value for stopping the operation of a plurality of air conditioners and the suppression current setting by the first to fourth suppression current setting means. A return current value to be set is set, the operation of the air conditioner restarted at this return current value is monitored for a certain period, and the current value determined by any of the first to fourth suppression current setting means is again set within the certain period. Exceeded At this time, a plurality of return current setting means for sequentially increasing the return current value to set the return current value, a wiring system setting means for setting which power supply line each air conditioner is connected to, and Operation priority setting means for setting the operation priority order among a plurality of air conditioners connected to the power supply lines of the same system set by the wiring system setting means, the output of the current detection means, and the first to fourth
1 to 4 comparing means for individually comparing the suppression current setting means for each power supply line of the same system, and the output of the current detection means and a plurality of return current setting means individually for the power supply line of the same system. The fifth to n-th (n is a natural number of 6 or more) comparing means for each comparison, an allowable current setting means for setting a rated current or an allowable current of the overcurrent protection means, and the set overcurrent protection means. The set allowable current value is varied based on the rated current value or the allowable current value and is supplied to the first to fourth suppression current setting means, and the suppression current values of the first to fourth suppression current setting means are corrected. The allowable current correction means and the control means for controlling the suppression operation and the return operation of the plurality of air conditioners in accordance with the operation priority order set by the operation priority order setting means based on the outputs of the first to nth comparison means. Air conditioner with The centralized control unit. 【請求項２】主幹の過電流保護手段に流れる負荷電流を
少なくとも２系統の電源ラインの電流値のベクトル合成
値として検出する主電流検出手段と、少なくとも空気調
和機が接続される分岐用の過電流保護装置を流れる負荷
電流を検出する分岐電流検出手段と、空気調和機の運転
周波数を低下させる電流値を設定する第１の抑制電流設
定手段と、少なくとも圧縮機を停止させる電流値を設定
する第２の抑制電流設定手段と、空気調和機の運転を停
止させる電流値を設定する第３の抑制電流設定手段と、
空気調和機複数台の運転を停止させる電流値を設定する
第４の抑制電流設定手段と、空気調和機の運転周波数を
低下させる電流値を設定する第５の抑制電流設定手段
と、少なくとも圧縮機を停止させる電流値を設定する第
６の抑制電流設定手段と、空気調和機の運転を停止させ
る電流値を設定する第７の抑制電流設定手段と、前記第
１〜４の抑制電流設定手段による抑制電流設定にて抑制
運転した空気調和機の運転を再開させる第１の復帰電流
値を設定し、この第１の復帰電流値にて再開した空気調
和機の運転を一定期間監視し、一定期間内に再度第１〜
第４の抑制電流設定手段のいずれかで定める電流値を超
過したときに、前記第１の復帰電流値より順に復帰電流
値を上昇させて復帰電流値を設定する複数の第１の復帰
電流設定手段と、前記第５〜第７の抑制電流設定手段に
て抑制運転した空気調和機の運転を再開させる第２の復
帰電流値を設定し、この第２の復帰電流値にて再開した
空気調和機の運転を一定期間監視し、一定期間内に再度
第５〜第７の抑制電流設定手段のいずれかで定める電流
値を超過したときに、前記第２の復帰電流値より順に復
帰電流値を上昇させて復帰電流値を設定する複数の第２
の復帰電流設定手段と、各空気調和機がいずれの電源ラ
インに接続されているかを設定する配線系統設定手段
と、前記配線系統設定手段にて設定された同一系統の電
源ラインに接続される複数の空気調和機相互間の作動優
先順位を設定する作動優先設定手段と、前記主電流検出
手段の出力と第１〜第４の抑制電流設定手段を個々に前
記同一系統の電源ライン毎に比較する第１〜第４の比較
手段と、前記分岐電流検出手段の出力と第５〜第７の抑
制電流設定手段を個々に比較する第５〜第７の比較手段
と、前記主電流検出手段の出力と複数の第１の復帰電流
設定手段の出力を個々に前記同一系統の電源ライン毎に
比較する複数の第８の比較手段と、前記分岐電流検出手
段の出力と複数の第２の復帰電流設定手段を個々に比較
する複数の第９の比較手段と、前記主幹および分岐用の
過電流保護手段の定格電流または許容電流を設定する許
容電流設定手段と、前記設定した主幹の過電流保護手段
の定格電流または許容電流値を基準に設定許容電流値を
可変して前記第１〜第４の抑制電流設定手段に供給し、
前記第１〜第４の抑制電流設定手段の抑制電流値を補正
するとともに、前記設定した分岐用の過電流保護手段の
定格電流または許容電流値を基準に設定許容電流値を可
変して前記第５〜第７の抑制電流設定手段に供給し、前
記第５〜第７の抑制電流設定手段の抑制電流値を補正可
能な許容電流補正手段と、前記第１〜第７の比較手段の
出力および、複数の第８および第９の比較手段の出力に
基づいて前記作動優先順設定手段で設定した作動優先順
位に従って複数台の空気調和機を抑制運転および復帰運
転制御する制御手段とを備えた空気調和機の集中制御装
置。2. A main current detecting means for detecting a load current flowing through an overcurrent protection means of a main trunk as a vector composite value of current values of at least two power supply lines, and a branching overcurrent connecting means for connecting at least an air conditioner. Branch current detection means for detecting a load current flowing through the current protection device, first suppression current setting means for setting a current value for reducing the operating frequency of the air conditioner, and at least a current value for stopping the compressor are set. Second suppression current setting means, third suppression current setting means for setting a current value for stopping the operation of the air conditioner,
Fourth suppression current setting means for setting a current value for stopping the operation of a plurality of air conditioners, fifth suppression current setting means for setting a current value for decreasing the operation frequency of the air conditioner, and at least a compressor The sixth suppression current setting means for setting the current value for stopping the operation, the seventh suppression current setting means for setting the current value for stopping the operation of the air conditioner, and the first to fourth suppression current setting means. A first return current value for restarting the operation of the air conditioner that has been suppressed by the suppression current setting is set, and the operation of the air conditioner that has restarted at this first return current value is monitored for a certain period of time and set for a certain period of time. Again in the first
A plurality of first return current settings for setting the return current value by sequentially increasing the return current value from the first return current value when the current value determined by any one of the fourth suppression current setting means is exceeded. Means and a second return current value for restarting the operation of the air conditioner that has been suppressed by the fifth to seventh suppression current setting means, and the air conditioning restarted at this second return current value. The operation of the machine is monitored for a certain period of time, and when the current value defined by any of the fifth to seventh suppression current setting means is again exceeded within a certain period of time, the return current value is sequentially set from the second return current value. A plurality of 2nd to raise and set return current value
Return current setting means, wiring system setting means for setting which power supply line each air conditioner is connected to, and a plurality of power supply lines of the same system set by the wiring system setting means. The operation priority setting means for setting the operation priority order among the air conditioners, the output of the main current detection means, and the first to fourth suppression current setting means are individually compared for each power supply line of the same system. First to fourth comparing means, fifth to seventh comparing means for individually comparing the output of the branch current detecting means and the fifth to seventh suppressing current setting means, and output of the main current detecting means And a plurality of eighth comparing means for individually comparing the outputs of the plurality of first return current setting means for each power supply line of the same system, the output of the branch current detecting means, and a plurality of second return current setting Multiple ninth ratios for individually comparing means Means, an allowable current setting means for setting a rated current or an allowable current of the trunk and branch overcurrent protection means, and an allowable current set on the basis of the set rated current or allowable current value of the master overcurrent protection means The value is varied and supplied to the first to fourth suppression current setting means,
In addition to correcting the suppression current value of the first to fourth suppression current setting means, the set allowable current value is varied based on the set rated current or allowable current value of the overcurrent protection means for branching. An allowable current correction means that can supply the fifth to seventh suppression current setting means and correct the suppression current values of the fifth to seventh suppression current setting means; and outputs of the first to seventh comparison means. , Control means for controlling the suppression operation and the return operation of the plurality of air conditioners according to the operation priority order set by the operation priority order setting means based on the outputs of the plurality of eighth and ninth comparison means. Centralized control device for the harmony machine. 【請求項３】少なくとも２系統の電源ラインの電流をベ
クトル合成した値を表示するとともに、前記ベクトル合
成した電流値および許容電流値を用いて電流の使用率を
表示可能な表示手段を備えた請求項１または２記載の空
気調和機の集中制御装置。3. A display means capable of displaying a vector-combined value of the currents of at least two power supply lines and displaying a current usage rate using the vector-combined current value and the permissible current value. The centralized control device for an air conditioner according to Item 1 or 2.
JP4035488A 1992-02-24 1992-02-24 Centralized control device for air conditioner Pending JPH05231698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4035488A JPH05231698A (en) 1992-02-24 1992-02-24 Centralized control device for air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4035488A JPH05231698A (en) 1992-02-24 1992-02-24 Centralized control device for air conditioner

Publications (1)

Publication Number Publication Date
JPH05231698A true JPH05231698A (en) 1993-09-07

Family

ID=12443137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4035488A Pending JPH05231698A (en) 1992-02-24 1992-02-24 Centralized control device for air conditioner

Country Status (1)

Country Link
JP (1) JPH05231698A (en)

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