JPS62123247A - Control unit of air conditioner - Google Patents

Control unit of air conditioner

Info

Publication number
JPS62123247A
JPS62123247A JP60260351A JP26035185A JPS62123247A JP S62123247 A JPS62123247 A JP S62123247A JP 60260351 A JP60260351 A JP 60260351A JP 26035185 A JP26035185 A JP 26035185A JP S62123247 A JPS62123247 A JP S62123247A
Authority
JP
Japan
Prior art keywords
air conditioner
extraordinary
abnormality
state
signal
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
JP60260351A
Other languages
Japanese (ja)
Inventor
Takashi Watanabe
隆 渡辺
Junji Tamatoshi
玉利 純次
Tatsunao Hayashida
林田 達尚
Tatsuhiko Sugimoto
達彦 杉本
Yasuo Sato
康夫 佐藤
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP60260351A priority Critical patent/JPS62123247A/en
Publication of JPS62123247A publication Critical patent/JPS62123247A/en
Pending legal-status Critical Current

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  • Air Conditioning Control Device (AREA)

Abstract

PURPOSE:To make clear a protector which has operated due to an extraordinary state and hence to easily obtain the cause for occurrence of the extraordinary state by carrying out individual extraordinary indications corresponding to occurrence of the extraordinary state, and continuously carrying out the extraordinary indication. CONSTITUTION:When an extraordinary state occurs in the air conditioner, either or protectors 4a and 4b is actuated. When a protector operating signal is inputted to the input circuit 16 of a microcomputer 13, a deenergizing signal is outputted to a driving relay 20, a contact 20a is opened and a contactor 3 is deenergized, and the operation of a compressor 2 is stopped. Upon this occasion, a lighting signal is emitted from an output circuit 17 of the microcomputer 13 to an indicator 12a or 12b through a buffer 24. When the extraordinary state is removed, self-holding is released, and the air conditioner is put into re-drivable state, but lighting of the indicator 12a or 12b is continued by an indication signal outputting means 11, and hence the cause for occurrence of the extraordinary state can be easily obtained.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、空気調和機の異常発生時に圧縮機等の電気
機器への通電全遮断し、且つその異常表示を行う空気調
和機の制御装置に関するものである。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a control device for an air conditioner that completely cuts off power to electrical equipment such as a compressor when an abnormality occurs in the air conditioner, and displays an abnormality indication. It is related to.

〔従来の技術〕[Conventional technology]

第4図は、1984年三菱電機株式会社発行の「冷熱ハ
ンドブックI」の270項に記載されている従来の空気
調和機の制御装置を示す電気回路図であり、図において
、1は三相交流電源、2は電動圧縮機、3はこの圧縮機
2の付勢用接触器で、メイク接点3aが電源1と圧縮機
2の間に介装されている。4a#4bは空気調和機の異
常発生時に動作して開放となるブレイク接点により構成
された2つの保護装置で、互に直列に接続されている。
Figure 4 is an electrical circuit diagram showing a conventional air conditioner control device described in item 270 of "Cooling and Heating Handbook I" published by Mitsubishi Electric Corporation in 1984. In the figure, 1 is a three-phase AC A power supply, 2 an electric compressor, 3 a contactor for energizing the compressor 2, and a make contact 3a interposed between the power supply 1 and the compressor 2. 4a and 4b are two protective devices configured with break contacts that operate and open when an abnormality occurs in the air conditioner, and are connected to each other in series.

5は保護装置4a、4bの自己保持用リレー、sa 、
5bはそのトランスファー接点、6は運転指令信号の入
力端子、7は入力端子6への運転指令信号によって付勢
されるリレー、Taはそのメイク接点である。
5 is a self-holding relay for the protective devices 4a and 4b, sa,
5b is its transfer contact, 6 is an input terminal for a driving command signal, 7 is a relay energized by the driving command signal to the input terminal 6, and Ta is its make contact.

次に上記回路構成を有した制御装置の動作について説明
する。空気調和機の運転指令信号が端子6から入力され
、その信号電圧がリレー7に印加されると、該リレーT
が励磁されてメイク接点7aが閉じる。これにより接触
器3は電源1の線間に、メイク接点Ta1保護装置4a
 、4b及びリレー5のトランスファー接点5aと直列
に接続されることになり、電源電圧が印加されて励磁さ
れる。そして、この励磁によりそのメイク接点3aが閉
じ、圧縮機2に電源電圧が印加され、運転が開始される
。この運転状態において異常が発生し、保護装置48 
t 4bの何れかが動作して接点が開くと、瞬間的に接
触器3と直列に接続されている自己保持用リレー5に電
源電圧が印加される。この時、自己保持用リレー5と接
触器3とのインピーダンス差により電源電圧の大部分は
自己保持用リレー5に印加されるので、リレー5は付勢
され、接触器3は消勢されて接点3aを開き、これで圧
縮機2の運転は停止する。又、自己保持用リレー5の付
勢により、そのトランスファー接点5aから5bに切り
換わり、自己保持用リレー5に完全に電源電圧が印加さ
れると共に、接触器3は両端が短絡されて無励磁となり
、空気調和機の異常時における運転停止状態の自己保持
が完了する。
Next, the operation of the control device having the above circuit configuration will be explained. When the operation command signal of the air conditioner is input from the terminal 6 and the signal voltage is applied to the relay 7, the relay T
is excited and the make contact 7a closes. As a result, the contactor 3 connects the make contact Ta1 between the lines of the power source 1 with the protective device 4a.
, 4b and the transfer contact 5a of the relay 5, and are excited by applying a power supply voltage. Then, due to this excitation, the make contact 3a is closed, power supply voltage is applied to the compressor 2, and operation is started. If an abnormality occurs in this operating state, the protective device 48
When any one of the contacts t4b operates to open the contact, the power supply voltage is instantaneously applied to the self-holding relay 5 connected in series with the contactor 3. At this time, most of the power supply voltage is applied to the self-holding relay 5 due to the impedance difference between the self-holding relay 5 and the contactor 3, so the relay 5 is energized and the contactor 3 is de-energized, so that the contact 3a, and the operation of the compressor 2 is now stopped. Furthermore, due to the energization of the self-holding relay 5, the transfer contact 5a is switched to 5b, and the power supply voltage is completely applied to the self-holding relay 5, and both ends of the contactor 3 are short-circuited and the contactor 3 becomes non-energized. , self-maintaining of the air conditioner's operation stop state in the event of an abnormality is completed.

このように、空気調和機に異常が発生すると、個々の異
常に対応した保護装置4a I 4bが作動して圧縮機
2などの電気機器への通電が接触器3により遮断され、
空気調和機の運転が停止される。
In this way, when an abnormality occurs in the air conditioner, the protection devices 4a I 4b corresponding to each abnormality are activated, and the contactor 3 cuts off the power to the electrical equipment such as the compressor 2.
Air conditioner operation is stopped.

又、異常が取り除かれてリセット状態になると、再運転
可能となる。
Moreover, when the abnormality is removed and the system returns to the reset state, it becomes possible to restart the system.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら、上記のような空気調和機の制御装置にあ
っては、個々の異常に対応して各々の保護装置4a、4
bが作動するが、異常解除後にどの保護装置4a l 
4bが作動したのか不明確となってしまい、このため異
常発生の原因を探ることが困難で且つ長時間を要し、異
常に対して迅速な対処ができないという問題点があった
However, in the control device for the air conditioner as described above, each protection device 4a, 4 is
b is activated, but after the abnormality is released, which protective device 4a l
4b has been activated, which makes it difficult and time-consuming to find the cause of the abnormality, and there is a problem in that the abnormality cannot be dealt with quickly.

この発明は、このような問題点を解消するためになされ
たもので、作動した保護装置が明確となり、異常に対し
て迅速に対処できる空気調和機の制御装置を提供するも
のである。
The present invention has been made to solve these problems, and provides an air conditioner control device that makes it clear which protection device has been activated and can quickly respond to abnormalities.

〔問題点を解決するための手段〕[Means for solving problems]

個々の異常発生時にそれぞれ作動する複数の保護装置を
有し、該保護装置の作動により電気機器への通電を遮断
する空気調和機の制御装置において、各々の保護装置の
作動に対応して異常表示を行う表示手段が備えら2t、
又保護装置の動作が解除された後においても上記異常表
示を継続して行わせる表示信号出力手段が具備されてい
る。
In an air conditioner control device that has a plurality of protective devices that are activated when each abnormality occurs, and which cuts off power to electrical equipment by the activation of the protective devices, an abnormality display is displayed in response to the activation of each protective device. 2t, comprising display means for performing
Further, a display signal output means is provided which causes the above-mentioned abnormality display to continue to be displayed even after the operation of the protection device is released.

〔作 用〕[For production]

空気調和機に異常が発生すると、その異常に対応した保
護装置が作動し、圧縮機等の電気#l!4器への通電が
遮断され、運転が停止される。この時、表示手段は上記
異常状態の表示を行うが、この異常表示は異常が取り除
かれて保護装置の作動が解除された後においても表示信
号出力手段によって継続される。このため、どの保護装
置が作動したかが明確となり、異常に対して迅速な対処
を行うことができる。
When an abnormality occurs in the air conditioner, the protection device corresponding to the abnormality is activated, and the electrical power of the compressor etc. Power to the four units will be cut off and operation will be stopped. At this time, the display means displays the abnormal state, and this abnormal display is continued by the display signal output means even after the abnormality is removed and the protection device is deactivated. For this reason, it becomes clear which protection device has activated, and it is possible to take prompt action against an abnormality.

〔実施例〕〔Example〕

以下、この発明の一実施例を図面について説明する。な
お、従来例と相当する部分については同一符号を付して
説明する。
An embodiment of the present invention will be described below with reference to the drawings. Note that parts corresponding to those in the conventional example will be described with the same reference numerals.

第1図はこの発明に係る制御装置の概略構成図であり、
図において、4at4bは空気調和機の異常時にそれぞ
れ作動する保護装置で、作動すると接触器3によって電
気機器(FE縮機等)への通電が遮断される。6は空気
調和機の運転指令信号が入力される入力端子、8は運転
指令信号の入力手段、9a 、9bは保護装置4a 、
4bの動作信号の入力手段で、これらの入力手段8,9
at9bは後述するマイクロコンピュータ(以下マイコ
ンという)に接続されている。10は接触器3の駆動φ
停止信号の出力手段、11は各々の保護装置48 $ 
4bに対応して設けられたI、ED等の表示器12a 
、 12bに表示信号を出力する表示信号出力手段で、
これらの出力手段10.11も上記マイコンに接続され
ている。
FIG. 1 is a schematic configuration diagram of a control device according to the present invention,
In the figure, 4at4b is a protection device that is activated when an abnormality occurs in the air conditioner, and when activated, the contactor 3 cuts off power to the electrical equipment (FE compressor, etc.). 6 is an input terminal into which an operation command signal of the air conditioner is input; 8 is an input means for the operation command signal; 9a, 9b are protection devices 4a;
These input means 8 and 9 are input means for the operation signal of 4b.
at9b is connected to a microcomputer (hereinafter referred to as microcomputer) which will be described later. 10 is the drive φ of the contactor 3
Stop signal output means 11 represents each protection device 48 $
Indicator 12a such as I and ED provided corresponding to 4b
, a display signal output means for outputting a display signal to 12b,
These output means 10.11 are also connected to the microcomputer.

第2図は第1図の回路構成の具体例を示す電気回路図で
ある。図中、1は交流電源、2は圧縮機、13は前述し
たマイフンで、メモリ14、CPU(中央処理ユニット
)15、入力回路16及び出力回路17を有している。
FIG. 2 is an electrical circuit diagram showing a specific example of the circuit configuration of FIG. 1. In the figure, 1 is an AC power supply, 2 is a compressor, and 13 is the aforementioned microphone, which has a memory 14, a CPU (central processing unit) 15, an input circuit 16, and an output circuit 17.

i sa 、 t abは保護装置4a r 1の動作
に応じ消勢される異常取込み用リレー、19a、19b
はそのブレイク接点、20は接触器3の駆動用リレー、
20aはそのメイク接点、21は運転指令入力用ホトカ
ブラ、22は電流制限用抵抗、23はプルアップ抵抗、
24はバッファである。
isa and tab are abnormality capture relays 19a and 19b that are deenergized in accordance with the operation of the protection device 4a r1.
is its break contact, 20 is the drive relay for contactor 3,
20a is its make contact, 21 is a photocoupler for operation command input, 22 is a current limiting resistor, 23 is a pull-up resistor,
24 is a buffer.

次に、第3図のフローチャートを用いて動作を説明する
。このフローチャートは、マイコン13のメモリ14に
記憶されCPU15によって実行されるプログラムを示
している。
Next, the operation will be explained using the flowchart shown in FIG. This flowchart shows a program stored in the memory 14 of the microcomputer 13 and executed by the CPU 15.

プログラムがスタートされると、先ずステップ30にお
いて、マイコン13はホトカプラ21を介して端子6か
ら入力される運転指令信号を受けて機器の制御を行う。
When the program is started, first in step 30, the microcomputer 13 receives an operation command signal input from the terminal 6 via the photocoupler 21 and controls the equipment.

即ち、その運転指令信号はCPU15内で処理され、そ
の結果にもとすき出力回路17よりバッファ24を介し
て接触器3駆動用リレ一200付勢信号が出力され、接
点20aが閉じる。接触器3が駆動され接点3aが閉じ
ると、圧縮機2は駆動状態となり、空気調和機の運転が
開始される。次に、ステップ31で保護装置4a e 
4bの何れかが作動しているかどうかを確認する。保護
装置4 a t 4 bの何れかが作動、つまり異常取
込み用リレー18a 、 18bの何れかが消勢されて
接点1 ga 、 1 gbの何れかが閉じ、マイコン
13の入力回路16に保護装置動作信号が入力されると
、ステップ32に進み、マイコン13の出刃回路17か
らバッファ24を介して接触器3の駆動用リレー20に
消勢信号が出力される。これで、接点20aが開放して
接触器3が消勢され、接点3aが開いて圧縮機2の動作
が停止する。そして、次のステップ33で、保護装置4
a又は4bに対応した表示器12aあるいは12bへの
点灯信号がマイコン13の出力回路17よりバッファ2
4に介して出力され、表示器12a又は12bが点灯す
る。次にステップ34て進み、運転指令がリセットされ
たかどうかを確認する。もし運転指令がリセットされな
い場合は、上述した保護装置自己保持ループ32 、3
3 、34を繰り返す。ステップ34で運転指令がリセ
ットすれば、ステップ35に進み、自己保持序除を行っ
て接触器3の駆動用リレー20に付勢信号を出力し、再
運転可能とする。この時、表示器12a、12bは点灯
したままとする。
That is, the operation command signal is processed within the CPU 15, and as a result, an energizing signal for the relay 200 for driving the contactor 3 is outputted from the plow output circuit 17 via the buffer 24, and the contact 20a is closed. When the contactor 3 is driven and the contact point 3a is closed, the compressor 2 is brought into a driving state and the air conditioner starts operating. Next, in step 31, the protective device 4a e
Check whether any of 4b is working. Either of the protective devices 4 a t 4 b is activated, that is, any of the relays 18 a , 18 b for abnormality is deenergized, and either the contacts 1 ga , 1 gb are closed, and the protective device is applied to the input circuit 16 of the microcomputer 13 . When the operation signal is input, the process proceeds to step 32, where a deactivation signal is output from the blade circuit 17 of the microcomputer 13 to the drive relay 20 of the contactor 3 via the buffer 24. This opens the contact 20a, deenergizing the contactor 3, and opens the contact 3a, stopping the operation of the compressor 2. Then, in the next step 33, the protective device 4
A lighting signal to the display 12a or 12b corresponding to a or 4b is sent from the output circuit 17 of the microcomputer 13 to the buffer 2.
4, and the display 12a or 12b lights up. Next, proceed to step 34 to check whether the driving command has been reset. If the operation command is not reset, the protective device self-holding loop 32, 3 described above
Repeat steps 3 and 34. If the operation command is reset in step 34, the process proceeds to step 35, where a self-holding sequence is performed and an energizing signal is output to the drive relay 20 of the contactor 3, allowing it to operate again. At this time, the indicators 12a and 12b remain lit.

このように、空気調和機に異常が発生するとそれに対応
した保護装置4a、4bv作動させて運転を停止し、同
時に異常表示を行う。そして、異常が取り除かれると自
己保持を解除させて再運転可能な状態とするが、この時
表示+J12a、12bの点灯は表示信号出力手段11
によって継続されるので、どの保護装置4a 、4bが
作動したかが明確となり、従って異常発生の原因と容易
に探ることができ、適切な対処が可能となる。
In this manner, when an abnormality occurs in the air conditioner, the corresponding protection devices 4a and 4bv are activated to stop the operation, and at the same time, an abnormality is displayed. When the abnormality is removed, the self-holding is released and the state is ready for restarting. At this time, the display +J12a and 12b are lit on the display signal output means 11.
Since the process is continued, it becomes clear which protection device 4a, 4b has activated, and therefore the cause of the abnormality can be easily found and appropriate measures can be taken.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、この発明によれば、個々の異常発
生に対応した異常表示を行い、且つ異常状態が解除され
た後においてもその異常表示を継続して行うようにした
ため、異常によって作動した保護装置が明確となり、従
って異常発生の原因を容易に探るCとができ、異′ぎに
対して迅速に対処できるという効果が得られる。
As explained above, according to the present invention, an abnormality display corresponding to each occurrence of an abnormality is performed, and the abnormality display is continued even after the abnormal state is canceled. The protection device becomes clear, and therefore the cause of the abnormality can be easily found, and abnormalities can be quickly dealt with.

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

第1図はこの発明の一実施例を示す概略構成図、第2図
は第11の具体例を示す電気回路図、第3図はその動作
を示す70−チャート、第4図は従来の空気調和機の制
御装置を示す電気回路図である。 2・・・・・・電気機器である冠動圧縮機3・・・・・
・接 触 器 4a 、4b・・・・・・保護装置 11・・・表示信号出力手段 12a、12b・・・・・・表 示 器なお、図中同一
符号は同−又は相当部分を示す。
Fig. 1 is a schematic configuration diagram showing an embodiment of the present invention, Fig. 2 is an electric circuit diagram showing an 11th specific example, Fig. 3 is a 70-chart showing its operation, and Fig. 4 is a conventional air conditioner. FIG. 2 is an electric circuit diagram showing a control device for a harmonizer. 2... Coronary compressor which is an electrical equipment 3...
・Contactors 4a, 4b...Protective device 11...Display signal output means 12a, 12b...Display device Note that the same reference numerals in the drawings indicate the same or equivalent parts.

Claims (1)

【特許請求の範囲】[Claims] 個々の異常発生時にそれぞれ作動する複数の保護装置を
有し、該保護装置の作動により電気機器への通電を遮断
する空気調和機の制御装置において、各々の保護装置の
作動に対応して異常表示を行う表示手段を備えると共に
、保護装置の動作が解除された後においても上記異常表
示を継続して行わせる表示信号出力手段を具備したこと
を特徴とする空気調和機の制御装置。
In an air conditioner control device that has a plurality of protective devices that are activated when each abnormality occurs, and which cuts off power to electrical equipment by the activation of the protective devices, an abnormality display is displayed in response to the activation of each protective device. What is claimed is: 1. A control device for an air conditioner, comprising display means for displaying the abnormality, and display signal output means for continuously displaying the abnormality display even after the operation of the protection device is canceled.
JP60260351A 1985-11-20 1985-11-20 Control unit of air conditioner Pending JPS62123247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60260351A JPS62123247A (en) 1985-11-20 1985-11-20 Control unit of air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60260351A JPS62123247A (en) 1985-11-20 1985-11-20 Control unit of air conditioner

Publications (1)

Publication Number Publication Date
JPS62123247A true JPS62123247A (en) 1987-06-04

Family

ID=17346754

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60260351A Pending JPS62123247A (en) 1985-11-20 1985-11-20 Control unit of air conditioner

Country Status (1)

Country Link
JP (1) JPS62123247A (en)

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