JP2001241732A - Controller for multi-type air conditioner - Google Patents
Controller for multi-type air conditionerInfo
- Publication number
- JP2001241732A JP2001241732A JP2000053030A JP2000053030A JP2001241732A JP 2001241732 A JP2001241732 A JP 2001241732A JP 2000053030 A JP2000053030 A JP 2000053030A JP 2000053030 A JP2000053030 A JP 2000053030A JP 2001241732 A JP2001241732 A JP 2001241732A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- circuit
- air conditioner
- relay
- inverter
- 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.)
- Granted
Links
Landscapes
- Air Conditioning Control Device (AREA)
- Inverter Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、マルチタイプ空気
調和機の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 a control device for a multi-type air conditioner.
【０００２】[0002]
【従来の技術】図７は従来のマルチタイプ空気調和機の
制御装置に関する系統図を示している。系統図回路構成
は図７に示すように、室外機側の交流電源１０４から分
岐した電源が室内ユニット１０６、１０７の制御部へと
供給されて、室内機を駆動させている。また、交流電源
の母線は室外側の制御部へと供給され、ダイオードブリ
ッジ１０９により直流電圧に整流され、平滑コンデンサ
１１０により平滑され、ＩＰＭ１１１に供給され、圧縮
機１１２を駆動させる。従来の電源回路では、電源電圧
が異常に高くなった時にパワー素子であるダイオードブ
リッジ１０９、平滑コンデンサ１１０、ＩＰＭ１１１、
圧縮機１１２を保護する回路が、電子制御装置内に組み
込まれていない構成である。2. Description of the Related Art FIG. 7 is a system diagram showing a conventional control device for a multi-type air conditioner. In the system diagram circuit configuration, as shown in FIG. 7, the power branched from the AC power supply 104 on the outdoor unit side is supplied to the control units of the indoor units 106 and 107 to drive the indoor unit. The bus of the AC power supply is supplied to an outdoor control unit, rectified to a DC voltage by a diode bridge 109, smoothed by a smoothing capacitor 110, supplied to the IPM 111, and drives the compressor 112. In a conventional power supply circuit, when a power supply voltage becomes abnormally high, a diode bridge 109, a smoothing capacitor 110, an IPM 111,
The circuit for protecting the compressor 112 is not incorporated in the electronic control unit.
【０００３】[0003]
【発明が解決しようとする課題】従来の電源回路方式で
は、電源事情が不安定な地域で、過電圧に対する保護回
路を設けていないため、電源電圧が異常に高くなった場
合に高電圧が各インバータスイッチング素子に印加さ
れ、破壊する可能性がある。In the conventional power supply circuit system, a protection circuit against overvoltage is not provided in an area where the power supply situation is unstable, so that when the power supply voltage becomes abnormally high, the high voltage is applied to each inverter. It may be applied to the switching element and destroyed.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に本発明は、電圧検出回路を設け、電源電圧があらかじ
め定められた値より高くなったことをマイコンが検知
し、インバータを構成する全てのスイッチング素子を直
接停止させ、その後、交流１次回路に設けられた第１の
リレー回路をＯＦＦすることにより、電源供給を止める
ことでインバータ部の保護を行なうことができる。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a voltage detection circuit, wherein a microcomputer detects that a power supply voltage has become higher than a predetermined value, and the microcomputer constitutes an inverter. By directly stopping the switching element, and then turning off the first relay circuit provided in the AC primary circuit, the power supply is stopped to protect the inverter unit.
【０００５】さらに、本発明は室外側から複数の室内側
へと供給される電源ラインを前記第１のリレー回路後か
ら行う。その結果、電源電圧があらかじめ定められた値
より高くなった時に、複数の室内機の保護も同時に行う
ことができる。Further, according to the present invention, a power supply line supplied from the outdoor side to a plurality of indoor sides is provided after the first relay circuit. As a result, when the power supply voltage becomes higher than a predetermined value, protection of a plurality of indoor units can be performed simultaneously.
【０００６】また、本発明は、室外交流一次側の第１の
リレーと抵抗の直列回路と平行に第２のリレー回路を接
続したものである。この結果、リレーに必要な接点容量
を減少させて、なおかつ電源電圧があらかじめ定められ
た値より高くなった時に、室外機のインバータ部、及び
室内機の制御部の保護を行うことができる。In the present invention, a second relay circuit is connected in parallel with a series circuit of a first relay and a resistor on the outdoor AC primary side. As a result, the contact capacity required for the relay can be reduced and the inverter unit of the outdoor unit and the control unit of the indoor unit can be protected when the power supply voltage becomes higher than a predetermined value.
【０００７】[0007]
【発明の実施の形態】以下、添付の図面を参照して本発
明に係る制御装置の電源回路の一実施形態を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a power supply circuit of a control device according to the present invention will be described below with reference to the accompanying drawings.
【０００８】（実施の形態１）図１に示すように本発明
の実施の形態１において、交流電源４は室外側の制御部
８に入り、さらに室内ユニット６、７へ電源供給を行
う。交流電源はダイオードブリッジ９により整流され、
整流後の直流電圧はコンデンサ１０により平滑され、そ
の整流平滑された電圧はＩＰＭ１１に供給され、圧縮機
１２を駆動する構成となっている。(Embodiment 1) As shown in FIG. 1, in Embodiment 1 of the present invention, an AC power supply 4 enters a control unit 8 on the outdoor side, and further supplies power to the indoor units 6 and 7. The AC power is rectified by the diode bridge 9,
The rectified DC voltage is smoothed by the capacitor 10, and the rectified and smoothed voltage is supplied to the IPM 11 to drive the compressor 12.
【０００９】図２は実施の形態１のマルチタイプ機種の
室外制御部の制御回路図を示している。ダイオードブリ
ッジ１７、平滑コンデンサ１８で整流平滑された直流電
圧はＤＣ／ＤＣコンバータ１９により低圧直流電圧に変
換され、マイコン３３、ＩＰＭ１１へと入力される。さ
らにマイコン３３は通信部を経由して室内ユニット６、
７へ信号を送り制御している。FIG. 2 is a control circuit diagram of the outdoor control unit of the multi-type model according to the first embodiment. The DC voltage rectified and smoothed by the diode bridge 17 and the smoothing capacitor 18 is converted into a low-voltage DC voltage by the DC / DC converter 19 and input to the microcomputer 33 and the IPM 11. Further, the microcomputer 33 communicates with the indoor unit 6 via the communication unit.
A signal is sent to 7 for control.
【００１０】また、異常電圧の検出（電圧があらかじめ
定められた値より大きいか否かを検出）を電源電圧検出
回路で行っている。電源電圧検出回路動作は、抵抗２１
間の電圧が抵抗２３、２４で分圧される基準電圧より大
きくなる時、つまり電源電圧が異常に高くなった時に、
オペアンプ３０からＬｏが出力され、フォトカプラ３１
がＯＮして５Ｖ系が引っ張られ、マイコン３３への入力
はＨｉからＬｏへと変わるように動作する。[0010] Further, detection of an abnormal voltage (detection of whether or not the voltage is larger than a predetermined value) is performed by a power supply voltage detection circuit. The operation of the power supply voltage detection circuit
When the voltage between them becomes larger than the reference voltage divided by the resistors 23 and 24, that is, when the power supply voltage becomes abnormally high,
Lo is output from the operational amplifier 30 and the photocoupler 31 is output.
Is turned on, the 5V system is pulled, and the input to the microcomputer 33 operates so as to change from Hi to Lo.
【００１１】以上のような方法で異常電圧を検知してい
る。これにより、図３にある実施の形態１の室外制御部
の制御フローに示すように、電源電圧が異常に高くなっ
た場合、上記のように過電圧検出回路３２により、マイ
コン３３へＬｏ信号が入り、電源電圧が異常に高くなっ
たことを検知し、マイコン３３からＩＰＭ１１へＯＦＦ
信号を送り、インバータを構成する全てのスイッチング
素子をまず停止させる。The abnormal voltage is detected by the above method. Thereby, as shown in the control flow of the outdoor control unit of the first embodiment shown in FIG. 3, when the power supply voltage becomes abnormally high, the Lo signal is input to the microcomputer 33 by the overvoltage detection circuit 32 as described above. Detects that the power supply voltage is abnormally high, and turns off the microcomputer 33 to the IPM 11.
A signal is sent to first stop all switching elements that make up the inverter.
【００１２】その後、リレー１４をＯＦＦし、電源供給
を止め、ダイオードブリッジ９、平滑コンデンサ１０等
のパワー部品の保護を行う。Thereafter, the relay 14 is turned off, the power supply is stopped, and power components such as the diode bridge 9 and the smoothing capacitor 10 are protected.
【００１３】（実施の形態２）次に、実施の形態２の電
源回路について説明する。本実施形態の電源回路の回路
構成、動作は、基本的に実施の形態１と同じである。実
施の形態１では、電源電圧が異常に高くなったときに、
室内機を保護するために電圧検出回路を設け、リレー回
路等を用いて、室内制御装置部への電源供給を停止させ
なければならない。Second Embodiment Next, a power supply circuit according to a second embodiment will be described. The circuit configuration and operation of the power supply circuit of the present embodiment are basically the same as those of the first embodiment. In the first embodiment, when the power supply voltage becomes abnormally high,
A voltage detection circuit must be provided to protect the indoor unit, and power supply to the indoor control unit must be stopped using a relay circuit or the like.
【００１４】ここで、図４に示すように実施の形態２
は、室内側への電源供給を実施の形態１の第１のリレー
回路後から行うようにする。このことより、室外インバ
ータ部を保護すると同時に、室内機側に電源検出回路及
びリレーを設置しなくても、室外の第１のリレー回路に
より室内機の保護を行うことができる。Here, as shown in FIG.
The power supply to the indoor side is performed after the first relay circuit of the first embodiment. Thus, at the same time as protecting the outdoor inverter unit, the indoor unit can be protected by the outdoor first relay circuit without installing a power detection circuit and a relay on the indoor unit side.
【００１５】（実施の形態３）次に、実施の形態３の電
源回路について説明する。本実施形態の電源回路の回路
構成、動作は基本的に実施の形態１と同じである。上記
実施の形態１、２では、交流一次側に設けたリレー１４
のＯＮ／ＯＦＦを行うが、大きな電流が流れているた
め、リレーは接点容量の大きなものが必要となってく
る。Embodiment 3 Next, a power supply circuit according to Embodiment 3 will be described. The circuit configuration and operation of the power supply circuit of this embodiment are basically the same as those of the first embodiment. In the first and second embodiments, the relay 14 provided on the AC primary side is used.
However, since a large current flows, a relay having a large contact capacity is required.
【００１６】そこで、図５に示すように実施の形態３
は、室外交流１次側の第１のリレー回路１４と抵抗１６
で直列回路を形成し、それと平行に第２のリレー回路１
５を設置し、第１のリレー回路１４にかかる負荷を低減
し、リレーの小型化を行う。また、電源電圧が異常に高
くなった場合は、図６の実施の形態３の制御フローに示
すように、第１のリレー回路１４と第２のリレー１５の
同時ＯＦＦにより、インバータ部の保護を行う。Therefore, as shown in FIG.
Is a first relay circuit 14 on the primary side of the outdoor AC and a resistor 16
To form a series circuit, and in parallel therewith, a second relay circuit 1
5 to reduce the load on the first relay circuit 14 and reduce the size of the relay. When the power supply voltage becomes abnormally high, as shown in the control flow of the third embodiment of FIG. 6, the first relay circuit 14 and the second relay 15 are simultaneously turned off to protect the inverter unit. Do.
【００１７】[0017]
【発明の効果】本発明の請求項１の制御装置によれば、
電源電圧が異常に高くなった時に電圧検出回路からの信
号で、マイコンが異常電圧を検知し、インバータを構成
する全てのスイッチング素子を停止させ、その後、交流
１次回路に設けた第１のリレー回路をＯＦＦし、電源供
給を止め、インバータ部の保護を行うことができる。According to the control device of the first aspect of the present invention,
When the power supply voltage becomes abnormally high, a signal from the voltage detection circuit causes the microcomputer to detect an abnormal voltage, stop all switching elements constituting the inverter, and then provide a first relay provided in the AC primary circuit. The circuit can be turned off, the power supply can be stopped, and the inverter can be protected.
【００１８】また、請求項２のように、室内機への電源
供給を前記リレー回路後から行うようにすると、室内機
側の電圧検出回路、リレー回路がなくとも室内側の異常
電圧保護を行うことができる。また、マルチモデルは複
数の室内機を持っているため、かなりのコスト改善を行
うことができる。Further, when power is supplied to the indoor unit after the relay circuit, abnormal voltage protection on the indoor side is performed without the voltage detection circuit and the relay circuit on the indoor unit side. be able to. Further, since the multi-model has a plurality of indoor units, it is possible to considerably reduce costs.
【００１９】また、請求項３の制御装置によれば、前記
リレー回路と抵抗で直列回路を形成し、それと平行に第
２のリレー回路を設けることで、リレーに必要な接点容
量を低減することができ、リレーの小型化のよるコスト
やプリント基板実装上の改善が行えると同時に、インバ
ータ部の保護を行うことができる。According to the control device of the third aspect, a series circuit is formed by the relay circuit and the resistor, and the second relay circuit is provided in parallel with the series circuit, so that the contact capacity required for the relay is reduced. Thus, the cost due to the miniaturization of the relay and the improvement in mounting on the printed circuit board can be improved, and at the same time, the protection of the inverter can be performed.
【図１】本発明に係るマルチタイプ空気調和機の制御装
置の実施形態１における系統図FIG. 1 is a system diagram of a control device for a multi-type air conditioner according to a first embodiment of the present invention.
【図２】本発明に係るマルチタイプ空気調和機の制御装
置の実施形態１における制御回路図FIG. 2 is a control circuit diagram in Embodiment 1 of the control device for the multi-type air conditioner according to the present invention.
【図３】本発明に係るマルチタイプ空気調和機の制御装
置の実施形態２における制御フロー図FIG. 3 is a control flow chart in Embodiment 2 of the control device for a multi-type air conditioner according to the present invention.
【図４】本発明に係るマルチタイプ空気調和機の制御装
置の実施形態２、３における系統図FIG. 4 is a system diagram in Embodiments 2 and 3 of a control device for a multi-type air conditioner according to the present invention.
【図５】本発明に係るマルチタイプ空気調和機の制御装
置の実施形態２、３における系統図FIG. 5 is a system diagram in Embodiments 2 and 3 of a control device for a multi-type air conditioner according to the present invention.
【図６】本発明に係るマルチタイプ空気調和機の制御装
置の実施形態３における制御フロー図FIG. 6 is a control flowchart in Embodiment 3 of the control device for the multi-type air conditioner according to the present invention.
【図７】従来からあるマルチタイプ空気調和機の制御装
置の系統図FIG. 7 is a system diagram of a conventional control device for a multi-type air conditioner.
４ 交流電源 ５ 室外ファンモータ ６、７ 室内ユニット ９ ダイオードブリッジ １０ 平滑コンデンサ １１ ＩＰＭ １２ 圧縮機 １３ 室外ファンモータ １７ ダイオードブリッジ １８ 平滑コンデンサ １９ ＤＣ／ＤＣコンバータ ３３ マイコン Reference Signs List 4 AC power supply 5 Outdoor fan motor 6, 7 Indoor unit 9 Diode bridge 10 Smoothing capacitor 11 IPM 12 Compressor 13 Outdoor fan motor 17 Diode bridge 18 Smoothing capacitor 19 DC / DC converter 33 Microcomputer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 増沢 敏一 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Ｆターム(参考） 3L060 AA01 CC10 CC19 DD01 EE02 EE04 5H007 BB06 CA01 CB05 DB07 DC05 FA01 FA14 FA19 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toshikazu Masawa 1006 Kazuma Kadoma, Osaka Prefecture F-term (reference) 3L060 AA01 CC10 CC19 DD01 EE02 EE04 5H007 BB06 CA01 CB05 DB07 DC05 FA01 FA14 FA19 in Matsushita Electric Industrial Co., Ltd.
Claims (3)
数の室内機から構成され、室外機に交流一次電源が供給
される空気調和機のマルチ機種において、室外機に電源
供給をＯＮ、ＯＦＦする第１のリレー回路、電源電圧検
出手段および電源電圧判断手段を設け、電源電圧があら
かじめ定められた値より高くなった時にインバータを構
成する全てのスイッチング素子を停止させた後に前記第
１のリレー回路をＯＦＦさせるようにした空気調和機の
制御装置。1. In a multi-type air conditioner comprising one inverter-driven outdoor unit and a plurality of indoor units, to which an AC primary power is supplied to the outdoor unit, power supply to the outdoor unit is turned on and off. A first relay circuit, a power supply voltage detecting means, and a power supply voltage determining means, wherein when the power supply voltage becomes higher than a predetermined value, all the switching elements constituting the inverter are stopped and then the first relay circuit is turned off. An air conditioner control device that turns off the circuit.
リレー回路後から行なうようにした請求項１の空気調和
機の制御装置。2. The control device for an air conditioner according to claim 1, wherein power is supplied to the plurality of indoor units after the first relay circuit.
抗を直列に接続し、その直列回路と並列に第２のリレー
回路を接続した請求項１または２記載の空気調和機の制
御装置。3. The control device for an air conditioner according to claim 1, wherein a first relay circuit and a resistor are connected in series to the outdoor AC primary side, and a second relay circuit is connected in parallel with the series circuit. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000053030A JP4151188B2 (en) | 2000-02-29 | 2000-02-29 | Multi-type air conditioner control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000053030A JP4151188B2 (en) | 2000-02-29 | 2000-02-29 | Multi-type air conditioner control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001241732A true JP2001241732A (en) | 2001-09-07 |
| JP4151188B2 JP4151188B2 (en) | 2008-09-17 |
Family
ID=18574464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000053030A Expired - Fee Related JP4151188B2 (en) | 2000-02-29 | 2000-02-29 | Multi-type air conditioner control device |
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| Country | Link |
|---|---|
| JP (1) | JP4151188B2 (en) |
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| KR101150945B1 (en) * | 2008-07-31 | 2012-05-29 | 위니아만도 주식회사 | Outdoor Unit for Multi Air Conditioner and Control Method Thereof |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101150945B1 (en) * | 2008-07-31 | 2012-05-29 | 위니아만도 주식회사 | Outdoor Unit for Multi Air Conditioner and Control Method Thereof |
| WO2014017146A1 (en) * | 2012-07-23 | 2014-01-30 | ダイキン工業株式会社 | Power supply apparatus |
| JP2014023392A (en) * | 2012-07-23 | 2014-02-03 | Daikin Ind Ltd | Power-supply device |
| CN104488157A (en) * | 2012-07-23 | 2015-04-01 | 大金工业株式会社 | Power supply apparatus |
| US9184669B2 (en) | 2012-07-23 | 2015-11-10 | Daikin Industries, Ltd. | Power supply apparatus |
| CN104488157B (en) * | 2012-07-23 | 2016-05-04 | 大金工业株式会社 | Supply unit |
| US10141733B2 (en) | 2013-01-17 | 2018-11-27 | Trane International Inc. | Variable frequency drive overvoltage protection |
| CN105075045A (en) * | 2013-01-17 | 2015-11-18 | 特灵国际有限公司 | Variable frequency drive overvoltage protection |
| KR102082013B1 (en) | 2013-09-27 | 2020-02-27 | 학교법인 두원학원 | Electric compressor inverter with communication power and driving method thereof |
| KR20150035641A (en) * | 2013-09-27 | 2015-04-07 | 학교법인 두원학원 | Electric compressor inverter with communication power and driving method thereof |
| JPWO2017094151A1 (en) * | 2015-12-02 | 2018-03-08 | 三菱電機株式会社 | Air conditioner protection circuit and protection method |
| WO2018216655A1 (en) * | 2017-05-25 | 2018-11-29 | パナソニック アプライアンシズ リフリジレーション デヴァイシズ シンガポール | Compressor driving device, control unit using same, compressor unit, and cooler |
| CN110679051A (en) * | 2017-05-25 | 2020-01-10 | 松下电器制冷装置新加坡 | Compressor drive device, control unit using the same, compressor unit, and cooler |
| KR20210020235A (en) * | 2019-08-14 | 2021-02-24 | (주)에어릭스 | IoT actuator for an air conditioner |
| KR102290061B1 (en) | 2019-08-14 | 2021-08-17 | (주)에어릭스 | IoT actuator for an air conditioner |
| WO2024111090A1 (en) * | 2022-11-24 | 2024-05-30 | 三菱電機株式会社 | Air conditioner |
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