JPH0544981A - Detecting method for abnormality of outdoor fan motor for air conditioner - Google Patents
Detecting method for abnormality of outdoor fan motor for air conditionerInfo
- Publication number
- JPH0544981A JPH0544981A JP3199197A JP19919791A JPH0544981A JP H0544981 A JPH0544981 A JP H0544981A JP 3199197 A JP3199197 A JP 3199197A JP 19919791 A JP19919791 A JP 19919791A JP H0544981 A JPH0544981 A JP H0544981A
- Authority
- JP
- Japan
- Prior art keywords
- fan motor
- abnormality
- outdoor fan
- compressor
- 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
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、エアコン室外ファンモ
−タの異常検出方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting an abnormality in an outdoor fan motor for an air conditioner.
【０００２】[0002]
【従来の技術】近年、ヒ−ポンプエアコンの普及により
寒冷地でのエアコンの設置が増えている。2. Description of the Related Art In recent years, the installation of air conditioners in cold regions has increased due to the widespread use of heat pump air conditioners.
【０００３】寒冷地では、冬期エアコン室外機のファン
の羽根が氷結しロック状態となることが多く見うられ
る。ファンがロックしたまま運転を行うとファンの温度
ヒュ−ズ飛びや冷凍サイクルの故障を招くことになるた
め、ファンロックの検出が重要である。In cold regions, it is often observed that the fan blades of the outdoor unit for an air conditioner in winter become frozen due to freezing. It is important to detect the fan lock, because if the fan is operated while locked, it may cause the temperature fuse of the fan to fly or the refrigeration cycle to malfunction.
【０００４】[0004]
【発明が解決しようとする課題】しかし、従来一般に及
しているエアコンにおいては、図５に示すように電源回
路６に設けた電流検出器１によりコンプレッサ２に流れ
る電流を検出してコンプロック等の異常は検出している
が、エアコン室外機のファンモ−タ３については単純に
リレ−７等により通電制御するだけで、ファンモ−タ３
の異常（コネクタ４の外れ、モ−タロック等）を検出す
る対策はとられていない。However, in an air conditioner that has hitherto been generally applied, as shown in FIG. 5, the current flowing through the compressor 2 is detected by the current detector 1 provided in the power supply circuit 6, and a complock or the like is detected. Is detected, the fan motor 3 of the outdoor unit of the air conditioner can be controlled by simply energizing it with a relay 7 or the like.
No measures are taken to detect the abnormal condition (disconnection of connector 4, motor lock, etc.).
【０００５】また、室外ファンモ−タはその電源をコン
プレッサと共用している構成上、コンプレッサに流れる
電流と室外ファンモ−タに流れる電流とを一つの電流検
出器で同時に検出する方式では、ファンモ−タの電流を
識別することはできない。コンプレッサに対し室外ファ
ンモ−タに流れる電流が弱すぎるからである。Further, since the outdoor fan motor shares its power source with the compressor, in a system in which the current flowing through the compressor and the current flowing through the outdoor fan motor are simultaneously detected by one current detector, the fan motor is It is not possible to identify the current of the data. This is because the current flowing through the outdoor fan motor is too weak for the compressor.
【０００６】本発明は上記事情に鑑み創案されたもので
あり、その目的はエアコン室外ファンモ−タの異常を確
実に検出できる方法を提供することにある。The present invention has been made in view of the above circumstances, and an object thereof is to provide a method for surely detecting an abnormality in an outdoor fan motor of an air conditioner.
【０００７】[0007]
【課題を解決するための手段】そこで、本発明に係るエ
アコン室外ファンモ−タの異常検出方法においては、コ
ンプレッサの電源回路に接続した、すなわちコンプレッ
サと電源を共用している室外ファンモ−タの異常を検出
するに際し、上記コンプレッサよりも所定時間先行させ
て上記ファンモ−タを起動し、上記電源回路の電流検出
器により上記ファンモ−タに流れる電流を検出するよう
にした。Therefore, in the abnormality detecting method for the outdoor fan motor of the air conditioner according to the present invention, the abnormality of the outdoor fan motor connected to the power supply circuit of the compressor, that is, sharing the power supply with the compressor. When detecting the above, the fan motor is started a predetermined time ahead of the compressor, and the current flowing through the fan motor is detected by the current detector of the power supply circuit.
【０００８】[0008]
【作用】上記のようにコンプレッサと室外ファンモ−タ
の起動タイミングを意図的にずらし、室外ファンモ−タ
に流れる電流を検出することにより、一つの電流検出器
でも、コンプレッサの影響を排し室外ファンモ−タに流
れる電流のみを容易に検出することができる。この検出
電流値と室外ファンモ−タ正常時の電流値との比較から
コネクタの外れやモ−タロック等の異常を確実に検出す
ることができる。As described above, the start timings of the compressor and the outdoor fan motor are intentionally shifted, and the current flowing through the outdoor fan motor is detected, so that even with a single current detector, the influence of the compressor can be eliminated. -It is possible to easily detect only the current flowing through the controller. By comparing the detected current value with the current value when the outdoor fan motor is normal, it is possible to reliably detect an abnormality such as disconnection of the connector or motor lock.
【０００９】[0009]
【実施例】本発明の実施例を図１〜図４に基いて説明す
れば以下の通りである。Embodiments of the present invention will be described below with reference to FIGS.
【００１０】図１は、本発明を実施するためのエアコン
室外機の回路構成図であり、インバ−タ５により能力可
変制御されるコンプレッサ２の電源回路６には、室外フ
ァンモ−タ３がコネクタ４を介しコンプレッサ２に対し
て並列に接続されている。インバ−タ５と室外ファンモ
−タ３のリレ−７は共に制御回路８に接続されており、
この制御回路８によってコンプレッサ２および室外ファ
ンモ−タ３が運転制御されるようになっている。電源回
路６の室外ファンモ−タ接続部よりも電源側には、制御
回路８に接続され室外ファンモ−タ３およびコンプレッ
サ２に流れる電流を検出するための電流検出器１が設け
られている。制御回路８には室外機の異常を表示するた
めの表示部９が付属している。FIG. 1 is a circuit configuration diagram of an air conditioner outdoor unit for carrying out the present invention. An outdoor fan motor 3 is connected to a connector in a power supply circuit 6 of a compressor 2 whose capacity is variably controlled by an inverter 5. 4 is connected in parallel to the compressor 2. Both the inverter 5 and the relay 7 of the outdoor fan motor 3 are connected to the control circuit 8.
The control circuit 8 controls the operation of the compressor 2 and the outdoor fan motor 3. On the power supply side of the outdoor fan motor connection portion of the power supply circuit 6, there is provided a current detector 1 connected to the control circuit 8 for detecting a current flowing through the outdoor fan motor 3 and the compressor 2. The control circuit 8 is provided with a display unit 9 for displaying an abnormality of the outdoor unit.
【００１１】図２は、制御回路８の内部構成を示すブロ
ック図である。制御回路８は、室内機に設けられたコン
トロ−ルパネル（図示せず）からの運転指令に基づき室
外ファンモ−タ３のリレ−７をON/OFF制御するファンリ
レ−制御回路１０と、リレ−７がONになった後所定時間
ｔD だけタイミングをずらしてコンプレッサ２を起動さ
せるためのタイマ回路１１とを備えている（コンプレッ
サ２並びに室外ファンモータ３の起動シーケンスについ
ては図３を参照）。タイマ回路１１は、上記電流検出器
１に接続された電流検出回路１２の電流検出値に基づき
コンプレッサ２および室外ファンモ−タ３の異常を判別
する異常判別回路１３を介してインバ−タ制御回路１４
に接続されている。異常判別回路１３はファンリレ−制
御回路１０にも接続されており、コンプレッサ２あるい
は室外ファンモ−タ３の異常を検知すると直ちに、これ
らの運転を停止すると共に異常表示回路１５を作動させ
て上記表示部９上に異常発生を示すサインを表示させる
構成となっている。FIG. 2 is a block diagram showing the internal structure of the control circuit 8. The control circuit 8 includes a fan relay control circuit 10 for controlling ON / OFF of the relay 7 of the outdoor fan motor 3 based on an operation command from a control panel (not shown) provided in the indoor unit, and a relay 7. After turning ON, the timer circuit 11 for starting the compressor 2 is provided by shifting the timing by a predetermined time t D (refer to FIG. 3 for the starting sequence of the compressor 2 and the outdoor fan motor 3). The timer circuit 11 includes an inverter control circuit 14 via an abnormality determination circuit 13 that determines an abnormality of the compressor 2 and the outdoor fan motor 3 based on the current detection value of the current detection circuit 12 connected to the current detector 1.
It is connected to the. The abnormality discriminating circuit 13 is also connected to the fan relay control circuit 10, and as soon as an abnormality of the compressor 2 or the outdoor fan motor 3 is detected, these operations are stopped and the abnormality display circuit 15 is operated to activate the above-mentioned display unit. It is configured to display a sign indicating the occurrence of an abnormality on the display 9.
【００１２】さて、上記のような構成につき図４に示す
フロ−チャ−トによって作用を説明する。The operation of the above arrangement will be described with reference to the flow chart shown in FIG.
【００１３】制御回路８は運転指令を受けると、即時タ
イマ回路１１を作動させる（ステップ１，２）。タイマ
スタ−トと同時にファンリレ−制御回路１０が作動しリ
レ−７をONにする（ステップ３）。タイマ回路１１はあ
らかじめ設定された所定の時間ｔD が経過するまでコン
プレッサ２のインバ−タ回路１４を作動停止状態に保持
する（ステップ４）。その間、異常判別回路１３は室外
ファンモ−タ３に流れる電流の読み込みを行い（ステッ
プ５）、その検出電流値Ｉがファンモ−タ正常時の上限
値Ｉ1 よりも大きい場合は、ファンリレ−制御回路１０
によりリレ−７をOFF にすると同時に表示部９上にファ
ンロック状態にあることを示すサインを出力させ（ステ
ップ６，７，８）、また、検出電流値Ｉがファンモ−タ
正常時の下限値Ｉ2 よりも小さい場合は、リレ−７をOF
F にすると同時に表示部９上にファン回路が断線（コネ
クタ４等の外れ）状態にあることを示すサインを出力さ
せる（ステップ６，９，１０，１１）。そして異常判別
回路１３は、検出電流値Ｉが正常範囲内（Ｉ2 ＜Ｉ＜Ｉ
1 ）にある場合にのみ、インバ−タ１４を起動させ通常
運転制御に入る（ステップ６，９，１２，１３）。この
ステップ１３以降の運転制御およびコンプレッサ２の異
常検出動作は従来のエアコンと同様に行なわれる。When the control circuit 8 receives the operation command, it activates the immediate timer circuit 11 (steps 1 and 2). Simultaneously with the Thai master, the fan relay control circuit 10 is activated to turn on relay 7 (step 3). The timer circuit 11 holds the inverter circuit 14 of the compressor 2 in a deactivated state until a preset predetermined time t D has elapsed (step 4). During that time, the abnormality determination circuit 13 reads the current flowing through the outdoor fan motor 3 (step 5). If the detected current value I is larger than the upper limit value I 1 when the fan motor is normal, the fan relay control circuit. 10
When the relay 7 is turned off, the sign indicating that the fan is locked is displayed on the display 9 at the same time (steps 6, 7 and 8), and the detected current value I is the lower limit value when the fan motor is normal. If it is smaller than I 2 , relay 7 is OF
Simultaneously with setting to F, a sign indicating that the fan circuit is in the disconnection state (disconnection of the connector 4 etc.) is output on the display unit 9 (steps 6, 9, 10, 11). Then, the abnormality determination circuit 13 determines that the detected current value I is within the normal range (I 2 <I <I
Only in the case of 1 ), the inverter 14 is started and the normal operation control is started (steps 6, 9, 12, 13). The operation control after step 13 and the abnormality detection operation of the compressor 2 are performed in the same manner as in the conventional air conditioner.
【００１４】上記のように、コンプレッサ２と室外ファ
ンモ−タ３の起動タイミングを意図的にずらしてファン
モ−タ３に流れる電流のみを検出することにより、コネ
クタ４の外れやファンロック等、室外ファンモ−タ３の
異常を確実に検出することができる。As described above, the start timings of the compressor 2 and the outdoor fan motor 3 are intentionally shifted and only the current flowing through the fan motor 3 is detected, so that the outdoor fan motor such as disconnection of the connector 4 or fan lock is detected. -It is possible to reliably detect the abnormality of the data 3.
【００１５】[0015]
【発明の効果】以上要するに本発明によれば、室外ファ
ンモ−タの異常を確実に検出することができる。In summary, according to the present invention, the abnormality of the outdoor fan motor can be surely detected.
【図１】本発明を実施するためのエアコン室外機の回路
構成図である。FIG. 1 is a circuit configuration diagram of an air conditioner outdoor unit for carrying out the present invention.
【図２】図１に示す制御回路の内部構成を示すブロック
図である。FIG. 2 is a block diagram showing an internal configuration of a control circuit shown in FIG.
【図３】コンプレッサ並びに室外ファンモ−タの起動シ
−ケンスを示す図である。FIG. 3 is a diagram showing a starting sequence of a compressor and an outdoor fan motor.
【図４】図１，図２の動作を説明するためのフロ−チャ
−ト図である。FIG. 4 is a flow chart for explaining the operation of FIGS. 1 and 2.
【図５】従来のエアコン室外機の回路構成図である。FIG. 5 is a circuit configuration diagram of a conventional air conditioner outdoor unit.
２ コンプレッサ ３ 室外ファンモ−タ ６ 電源回路 ｔD 所定時間2 Compressor 3 Outdoor fan motor 6 Power circuit t D Predetermined time
Claims (1)
ファンモ−タの異常を検出するに際し、上記コンプレッ
サよりも所定時間先行させて上記ファンモ−タを起動
し、上記電源回路の電流検出器により上記ファンモ−タ
に流れる電流を検出するようにしたことを特徴とするエ
アコン室外ファンモ−タの異常検出方法。1. When detecting an abnormality in an outdoor fan motor connected to a power supply circuit of a compressor, the fan motor is started a predetermined time ahead of the compressor, and the fan motor is activated by a current detector of the power supply circuit. -A method for detecting an abnormality in an outdoor fan motor for an air conditioner, which is characterized in that a current flowing through the motor is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3199197A JPH0544981A (en) | 1991-08-08 | 1991-08-08 | Detecting method for abnormality of outdoor fan motor for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3199197A JPH0544981A (en) | 1991-08-08 | 1991-08-08 | Detecting method for abnormality of outdoor fan motor for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0544981A true JPH0544981A (en) | 1993-02-23 |
Family
ID=16403759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3199197A Pending JPH0544981A (en) | 1991-08-08 | 1991-08-08 | Detecting method for abnormality of outdoor fan motor for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0544981A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241034A (en) * | 2015-11-17 | 2016-01-13 | 广东美的制冷设备有限公司 | Control method and control device for air conditioner |
| CN105571071A (en) * | 2016-01-05 | 2016-05-11 | 广东美的制冷设备有限公司 | Air conditioner and control method and device of air conditioner |
| WO2018142711A1 (en) * | 2017-02-06 | 2018-08-09 | 日立ジョンソンコントロールズ空調株式会社 | Outdoor unit of air conditioner, air conditioner, and air-conditioning management method |
-
1991
- 1991-08-08 JP JP3199197A patent/JPH0544981A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241034A (en) * | 2015-11-17 | 2016-01-13 | 广东美的制冷设备有限公司 | Control method and control device for air conditioner |
| CN105571071A (en) * | 2016-01-05 | 2016-05-11 | 广东美的制冷设备有限公司 | Air conditioner and control method and device of air conditioner |
| WO2018142711A1 (en) * | 2017-02-06 | 2018-08-09 | 日立ジョンソンコントロールズ空調株式会社 | Outdoor unit of air conditioner, air conditioner, and air-conditioning management method |
| JP2018128156A (en) * | 2017-02-06 | 2018-08-16 | 日立ジョンソンコントロールズ空調株式会社 | Outdoor machine of air conditioner, air conditioner and air-conditioning management method |
| CN108700321A (en) * | 2017-02-06 | 2018-10-23 | 日立江森自控空调有限公司 | Outdoor unit, air conditioner and the air conditioning managing method of air conditioner |
| US20190063773A1 (en) * | 2017-02-06 | 2019-02-28 | Hitachi-Johnson Controls Air Conditioning, Inc. | Outdoor unit for air conditioner, air conditioner, and method for controlling air conditioner |
| CN108700321B (en) * | 2017-02-06 | 2019-04-19 | 日立江森自控空调有限公司 | Outdoor unit, air conditioner and the air conditioning managing method of air conditioner |
| US10415842B2 (en) | 2017-02-06 | 2019-09-17 | Hitachi-Johnson Controls Air Conditioning, Inc. | Outdoor unit for air conditioner, air conditioner, and method for controlling air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |