JP2001141287A - Controller air conditioner - Google Patents
Controller air conditionerInfo
- Publication number
- JP2001141287A JP2001141287A JP32244499A JP32244499A JP2001141287A JP 2001141287 A JP2001141287 A JP 2001141287A JP 32244499 A JP32244499 A JP 32244499A JP 32244499 A JP32244499 A JP 32244499A JP 2001141287 A JP2001141287 A JP 2001141287A
- Authority
- JP
- Japan
- Prior art keywords
- ipm
- inverter circuit
- microcomputer
- fuse
- 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.)
- Granted
Links
Landscapes
- Air Conditioning Control Device (AREA)
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明はインバータ回路に
よって圧縮機の回転速度を多段階に可変する空気調和機
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 an air conditioner which varies the rotational speed of a compressor in multiple stages by an inverter circuit.
【０００２】[0002]
【従来の技術】従来よりインバータ回路で圧縮機の運転
周波数を、空調負荷に応じて約３０〜１２０Ｈｚの間で
ステップ的に可変して能力を適宜大きさに調整すること
で、設定温度に対する温度ムラが比較的少ない空気調和
が行われていた。図２の概略回路図によって従来例の説
明をすれば、ａはＡＣ１００Ｖの商用電源であり、この
商用電源ａをダイオードスタックｂとコンデンサｃ、ｄ
によって直流に整流すると共に倍電圧のＤＣ２８０Ｖに
しコンデンサｅにて平滑しＩＰＭｆに供給していた。そ
してこのＩＰＭｆの出力に発生した三相交流の周波数を
約３０〜１２０Ｈｚに可変する事で圧縮機ｇの回転速度
を可変していた。2. Description of the Related Art Conventionally, the operating frequency of a compressor is stepwise varied in the range of about 30 to 120 Hz in accordance with an air conditioning load by an inverter circuit to adjust the capacity to an appropriate level. Air conditioning was performed with relatively little unevenness. If the conventional example is described with reference to the schematic circuit diagram of FIG. 2, a is a commercial power supply of AC 100 V, and this commercial power supply a is connected to a diode stack b and capacitors c and d.
Rectified to a direct current and made a doubled voltage of 280 V DC, smoothed by a capacitor e and supplied to the IPMf. The rotational speed of the compressor g is varied by varying the frequency of the three-phase alternating current generated at the output of the IPMf to about 30 to 120 Hz.
【０００３】ｈは前記コンデンサｅとＩＰＭｆの間に設
けられた１０Ａ用のヒューズで、前記ＩＰＭｆや圧縮機
ｇの異常によって過電流が発生した場合に溶断し、回路
や圧縮機ｇの破損を最小限に抑えるものである。前記Ｉ
ＰＭｆはマイクロコンピュータｉにて制御されるが、こ
のマイクロコンピュータｉは、前記ヒューズｈとＩＰＭ
ｆの間より引き出されスイッチングトランスｊにて約１
２Ｖに降圧された電源にて駆動していたので、前記ＩＰ
Ｍｆや圧縮機ｇの異常等によって過電流が発生しヒュー
ズｈが溶断した場合にはマイクロコンピュータｉの電源
も断たれるものだった。また前記商用電源ａとダイオー
ドスタックｂの間には電流センサｋを設け前記マイクロ
コンピュータｉにて過電流の検出を行っていた。[0003] h is a 10A fuse provided between the capacitor e and the IPMf, which is blown when an overcurrent occurs due to an abnormality of the IPMf or the compressor g, thereby minimizing damage to the circuit and the compressor g. It is to keep to the limit. Said I
The PMf is controlled by a microcomputer i. The microcomputer i includes the fuse h and the IPM.
f and about 1 in the switching transformer j.
Since it was driven by a power supply stepped down to 2V, the IP
When the fuse h was blown due to an overcurrent caused by an abnormality of the compressor M or the compressor g, the power supply of the microcomputer i was also cut off. Further, a current sensor k is provided between the commercial power supply a and the diode stack b, and the microcomputer i detects overcurrent.
【０００４】[0004]
【発明が解決しようとする課題】空気調和機は販売価格
の低下により製造原価の低減が大きな課題であり、前記
インバータ回路も原価の低減の必要が有り、スイッチン
グトランスｊを安価なＤＣ／ＤＣコンバータに変更しよ
うとすると、安価なＤＣ／ＤＣコンバータは入力電源が
ＤＣ１４０Ｖであるためにヒューズｈよりも電源１側に
入力電源を取る必要があり、この場合ＩＰＭｆ等の故障
でヒューズｈが溶断してもマイクロコンピュータｉは故
障を認識できずＩＰＭｆに運転信号を送り続けることで
マイクロコンピュータｉ自身や他の回路までも二次的な
故障を発生させる危険が有った。A major problem with air conditioners is the reduction of manufacturing costs due to a reduction in selling prices. The inverter circuit also needs to reduce costs, and the switching transformer j can be replaced with an inexpensive DC / DC converter. If the inexpensive DC / DC converter is used, it is necessary to take the input power to the power supply 1 side rather than the fuse h because the input power is 140 V DC. In this case, the fuse h is blown by a failure such as IPMf. However, the microcomputer i could not recognize the failure and continued to send the operation signal to the IPMf, so that there was a danger that the microcomputer i itself and other circuits could cause a secondary failure.
【０００５】[0005]
【課題を解決するための手段】この発明はこの点に着目
し上記欠点を解決する為、空気調和機における圧縮機用
のモータに電力を供給するインバータ回路と、このイン
バータ回路の動作を制御するマイクロコンピュータを備
えた空気調和機の制御装置に於いて、前記インバータ回
路にＩＰＭを設け、交流の商用電源をダイオードスタッ
クにて直流に整流し、この直流電源を前記ＩＰＭに供給
すると共に前記ダイオードスタックとＩＰＭの間にヒュ
ーズを設け、前記ダイオードスタックとヒューズとの間
にＤＣ／ＤＣコンバータを接続し、前記マイクロコンピ
ュータの電源をＤＣ／ＤＣコンバータにて供給し、前記
ＩＰＭの入力側電流を検知する電流センサを設け、この
電流センサの値が所定値以下を一定時間継続した場合前
記インバータ回路の運転を停止するようにしたものであ
る。SUMMARY OF THE INVENTION In order to solve the above-mentioned drawbacks, the present invention focuses on this point and an inverter circuit for supplying electric power to a compressor motor in an air conditioner, and controls the operation of the inverter circuit. In a control device for an air conditioner equipped with a microcomputer, an IPM is provided in the inverter circuit, AC commercial power is rectified into DC by a diode stack, and this DC power is supplied to the IPM and the diode stack is supplied. A fuse is provided between the diode stack and the IPM, a DC / DC converter is connected between the diode stack and the fuse, power of the microcomputer is supplied by the DC / DC converter, and an input side current of the IPM is detected. A current sensor, wherein when the value of the current sensor continues to be equal to or less than a predetermined value for a certain period of time, the inverter circuit It is obtained so as to stop the operation.
【０００６】[0006]
【発明の実施の形態】異常発生時の作動について説明す
れば、ＩＰＭ６や圧縮機７等の故障が発生しヒューズ８
が溶断した場合、マイクロコンピュータ９がＩＰＭ６に
運転信号を送っているにもかかわらず電流センサ１１の
値が２Ｖ以下なった場合にはヒューズ８が切れたものと
判断し、マイクロコンピュータ９からＩＰＭ６への運転
信号を停止する。そしてマイクロコンピュータ９は表示
装置１２のランプ等により使用者に異常の発生を知らせ
るものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The operation at the time of occurrence of an abnormality will be described.
Is blown, if the microcomputer 9 sends an operation signal to the IPM 6 and the value of the current sensor 11 becomes 2 V or less, it is determined that the fuse 8 has blown. Stop the operation signal of. The microcomputer 9 informs the user of the occurrence of an abnormality by using a lamp of the display device 12 or the like.
【０００７】[0007]
【実施例】以下この発明の一実施例を図面をもとに説明
すれば、１はＡＣ１００Ｖの商用電源であり、この商用
電源１をダイオードスタック２とコンデンサ３、４によ
って直流に整流すると共に倍電圧のＤＣ２８０Ｖにしコ
ンデンサ５にて平滑し、直流を任意の周波数の三相交流
に返還するＩＰＭ６に供給する。そしてこのＩＰＭ６の
出力に発生した三相交流の周波数を約３０〜１２０Ｈｚ
に可変する事で圧縮機７の回転速度を多段階に可変する
ものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. Reference numeral 1 denotes a commercial power supply of AC 100 V. The commercial power supply 1 is rectified to DC by a diode stack 2 and capacitors 3 and 4 and doubled. The voltage is set to DC 280 V and smoothed by the capacitor 5, and the DC is supplied to the IPM 6 which returns to a three-phase AC of an arbitrary frequency. The frequency of the three-phase alternating current generated at the output of the IPM 6 is approximately 30 to 120 Hz.
The rotational speed of the compressor 7 can be varied in multiple stages.
【０００８】８は前記コンデンサ５とＩＰＭ６の間に設
けられた１０Ａ用のヒューズで、前記ＩＰＭ６や圧縮機
７の異常によって過電流が発生した場合に溶断し、回路
や圧縮機７の破損を最小限に抑えるものである。前記Ｉ
ＰＭ６はマイクロコンピュータ９にて制御されるが、こ
のマイクロコンピュータ９は、電源は安価なＤＣ／ＤＣ
コンバータ１０によって供給している。Reference numeral 8 denotes a 10A fuse provided between the capacitor 5 and the IPM 6, which is blown when an overcurrent occurs due to an abnormality of the IPM 6 or the compressor 7, thereby minimizing damage to the circuit and the compressor 7. It is to keep to the limit. Said I
The PM 6 is controlled by a microcomputer 9. The microcomputer 9 has an inexpensive DC / DC power supply.
It is supplied by a converter 10.
【０００９】前記ＤＣ／ＤＣコンバータ１０は入力電源
がＡＣ１４０Ｖであるために、前記コンデンサ３とコン
デンサ４の間に接続されている。１１は前記商用電源１
とダイオードスタック２の間に設けた電流センサで、マ
イクロコンピュータ９に電流情報の信号を送るものであ
る。１２は前記マイクロコンピュータ９に接続されたラ
ンプやダイオード等から成る表示装置であり、異常時や
その他の情報を表示して使用者に知らせるものである。The DC / DC converter 10 is connected between the capacitor 3 and the capacitor 4 because the input power is 140 VAC. 11 is the commercial power supply 1
And a current sensor provided between the diode stack 2 and sends a signal of current information to the microcomputer 9. Reference numeral 12 denotes a display device including a lamp, a diode, and the like connected to the microcomputer 9, and displays an abnormal time or other information to notify the user.
【００１０】異常発生時の作動について説明すれば、Ｉ
ＰＭ６や圧縮機７等の故障が発生しヒューズ８が溶断し
た場合、マイクロコンピュータ９がＩＰＭ６に運転信号
を送っているにもかかわらず電流センサ１１の値が２Ｖ
以下なった場合にはヒューズ８が切れたものと判断し、
マイクロコンピュータ９からＩＰＭ６への運転信号を停
止する。そしてマイクロコンピュータ９は表示装置１２
のランプ等により使用者に異常の発生を知らせるもので
ある。The operation at the time of occurrence of an abnormality will be described.
When the failure of the PM 6 or the compressor 7 occurs and the fuse 8 is blown, the value of the current sensor 11 is 2 V even though the microcomputer 9 sends the operation signal to the IPM 6.
If it is below, it is judged that the fuse 8 has blown,
The operation signal from the microcomputer 9 to the IPM 6 is stopped. The microcomputer 9 has a display device 12
The user is notified of the occurrence of an abnormality by a lamp or the like.
【００１１】このようにＤＣ／ＤＣコンバータ１０がヒ
ューズ８よりも電源１側にあっても、異常によるヒュー
ズ８溶断を電流センサ１１により的確に判断しＩＰＭ６
への運転指令を停止しするので、マイクロコンピュータ
９自身やその他回路が二次的に故障する事を防止してい
る。As described above, even if the DC / DC converter 10 is located closer to the power supply 1 than the fuse 8, the current sensor 11 accurately determines whether or not the fuse 8 has blown due to an abnormality.
The operation command to the microcomputer 9 is stopped, so that the microcomputer 9 itself and other circuits are prevented from secondary failure.
【００１２】[0012]
【発明の効果】以上のようにこの発明によれば、ＤＣ／
ＤＣコンバータ１０がヒューズ８よりも電源１側にあっ
ても、異常によるヒューズ８溶断を電流センサ１１によ
り的確に判断しＩＰＭ６への運転指令を停止しするの
で、マイクロコンピュータ９自身やその他回路が二次的
に故障する事を防止するものである。As described above, according to the present invention, DC /
Even if the DC converter 10 is located closer to the power supply 1 than the fuse 8, the blow of the fuse 8 due to the abnormality is accurately determined by the current sensor 11 and the operation command to the IPM 6 is stopped. This is to prevent the next failure.
【図１】この発明一実施例の概略の回路図。FIG. 1 is a schematic circuit diagram of an embodiment of the present invention.
【図２】従来例の回路図。FIG. 2 is a circuit diagram of a conventional example.
６ ＩＰＭ ７ 圧縮機 ８ ヒューズ ９ マイクロコンピュータ １０ ＤＣ／ＤＣコンバータ １１ 電流センサ Reference Signs List 6 IPM 7 Compressor 8 Fuse 9 Microcomputer 10 DC / DC converter 11 Current sensor
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3L060 AA01 CC10 DD01 DD02 EE04 5H007 AA06 AA12 BB06 DC02 FA03 FA13 FA19 HA04 5H576 AA10 BB06 DD04 HA01 HB01 JJ03 LL22 LL55 MM01 MM02 MM10 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3L060 AA01 CC10 DD01 DD02 EE04 5H007 AA06 AA12 BB06 DC02 FA03 FA13 FA19 HA04 5H576 AA10 BB06 DD04 HA01 HB01 JJ03 LL22 LL55 MM01 MM02 MM10
Claims (1)
電力を供給するインバータ回路と、このインバータ回路
の動作を制御するマイクロコンピュータを備えた空気調
和機の制御装置に於いて、前記インバータ回路にＩＰＭ
を設け、交流の商用電源をダイオードスタックにて直流
に整流し、この直流電源を前記ＩＰＭに供給すると共に
前記ダイオードスタックとＩＰＭの間にヒューズを設
け、前記ダイオードスタックとヒューズとの間にＤＣ／
ＤＣコンバータを接続し、前記マイクロコンピュータの
電源をＤＣ／ＤＣコンバータにて供給し、前記ＩＰＭの
入力側電流を検知する電流センサを設け、この電流セン
サの値が所定値以下を一定時間継続した場合前記インバ
ータ回路の運転を停止する事を特徴とする空気調和機の
制御装置。1. An air conditioner control apparatus comprising: an inverter circuit for supplying power to a compressor motor in an air conditioner; and a microcomputer for controlling the operation of the inverter circuit. IPM
And rectifies AC commercial power to DC with a diode stack, supplies this DC power to the IPM, provides a fuse between the diode stack and the IPM, and provides a DC / DC between the diode stack and the fuse.
When a DC converter is connected, a power supply of the microcomputer is supplied by a DC / DC converter, and a current sensor for detecting an input-side current of the IPM is provided, and a value of the current sensor is kept below a predetermined value for a predetermined time. A control device for an air conditioner, wherein the operation of the inverter circuit is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32244499A JP3996309B2 (en) | 1999-11-12 | 1999-11-12 | Air conditioner control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32244499A JP3996309B2 (en) | 1999-11-12 | 1999-11-12 | Air conditioner control device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001141287A true JP2001141287A (en) | 2001-05-25 |
| JP2001141287A5 JP2001141287A5 (en) | 2005-03-17 |
| JP3996309B2 JP3996309B2 (en) | 2007-10-24 |
Family
ID=18143749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32244499A Expired - Fee Related JP3996309B2 (en) | 1999-11-12 | 1999-11-12 | Air conditioner control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3996309B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821732A (en) * | 2015-05-20 | 2015-08-05 | 成都英格瑞德电气有限公司 | Novel IPM inverter module device with stable operation performance |
| JP2016067145A (en) * | 2014-09-25 | 2016-04-28 | 株式会社富士通ゼネラル | Air conditioner |
| US9647443B2 (en) | 2013-10-29 | 2017-05-09 | Mitsubishi Electric Corporation | Semiconductor device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671056A (en) * | 2013-12-20 | 2014-03-26 | 博耐尔汽车电气系统有限公司 | Controller of compressor of air conditioner of electric automobile |
-
1999
- 1999-11-12 JP JP32244499A patent/JP3996309B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9647443B2 (en) | 2013-10-29 | 2017-05-09 | Mitsubishi Electric Corporation | Semiconductor device |
| JP2016067145A (en) * | 2014-09-25 | 2016-04-28 | 株式会社富士通ゼネラル | Air conditioner |
| CN104821732A (en) * | 2015-05-20 | 2015-08-05 | 成都英格瑞德电气有限公司 | Novel IPM inverter module device with stable operation performance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3996309B2 (en) | 2007-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6924618B2 (en) | Inverter controller for driving motor, and air conditioner | |
| JPH0885332A (en) | Inverter device for air conditioning | |
| JPH1097356A (en) | Power saving display device | |
| JPH09266674A (en) | Dc power device and air conditioner using dc power device thereof | |
| JPH10155297A (en) | Inverter controlling device for air conditioner | |
| JP2001141287A (en) | Controller air conditioner | |
| KR100358764B1 (en) | inverter air conditioner control Method and apparatus | |
| JPH0861247A (en) | Equipment and method of controlling operation of air conditioner | |
| KR100452993B1 (en) | A circuit and method for inverter-motor control of air conditioner | |
| JP3304202B2 (en) | Air conditioner | |
| JP6146316B2 (en) | Air conditioner | |
| JPH1089782A (en) | Air conditioner | |
| JPH0626695A (en) | Controller of air conditioner | |
| KR100445466B1 (en) | Method and device for power factor compensation in inverter airconditioner | |
| KR101965180B1 (en) | Air conditioner | |
| KR100449123B1 (en) | The fan filter unit control system of BLDC motor for extreme cleanness and method thereof and the management system manageability a fan filter unit control system using network | |
| JP2002325491A (en) | Air conditioner | |
| KR100445465B1 (en) | Method and device for power factor compensation in inverter airconditioner | |
| KR20080064019A (en) | Air conditioner | |
| CN108027159B (en) | Air conditioner and control method for air conditioner | |
| KR100445464B1 (en) | Control method for inverter airconditioner | |
| KR100308563B1 (en) | Outdoor unit power supply and method of the separate air conditioner | |
| JPH08182306A (en) | Air conditioner | |
| KR20070064090A (en) | Method for power factor compensation ininverter airconditioner | |
| JPH11332248A (en) | Electric storage type air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040421 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040421 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20061010 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061020 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20070731 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070802 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100810 Year of fee payment: 3 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100810 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100810 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110810 Year of fee payment: 4 |
|
| LAPS | Cancellation because of no payment of annual fees |