JPH0447398U - - Google Patents
Info
- Publication number
- JPH0447398U JPH0447398U JP8885390U JP8885390U JPH0447398U JP H0447398 U JPH0447398 U JP H0447398U JP 8885390 U JP8885390 U JP 8885390U JP 8885390 U JP8885390 U JP 8885390U JP H0447398 U JPH0447398 U JP H0447398U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- inverter circuit
- output frequency
- lowered
- control device
- 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
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Control Of Ac Motors In General (AREA)
Description
第１図は本考案の構成を示すブロツク図、第２
図は本考案のタイムチヤート、第３図は本考案の
フローチヤートである。
図中、１は交流電源、２はインバータ回路、３
は圧縮機、４は室内側制御部、５は室外側制御部
、６は周波数変換装置、７はインバータ制御回路
、８は電流センサ、９は電流検出回路、１０はＲ
ＯＭ、１１は比較手段、１２はタイマーである。
Figure 1 is a block diagram showing the configuration of the present invention;
The figure is a time chart of the present invention, and FIG. 3 is a flow chart of the present invention. In the figure, 1 is an AC power supply, 2 is an inverter circuit, and 3
is a compressor, 4 is an indoor control section, 5 is an outdoor control section, 6 is a frequency converter, 7 is an inverter control circuit, 8 is a current sensor, 9 is a current detection circuit, 10 is R
OM, 11 is a comparison means, and 12 is a timer.
Claims (1)
数の交流に変換しインバータ回路により圧縮機モ
ータを駆動してなる空気調和機において、上記圧
縮機モータの運転電流の上限値を最大許容範囲を
超えない範囲で設定するとともに、同上限値を超
える過電流時に上記インバータ回路の出力周波数
を一定周波数だけ下げて過電流状態を避け、同一
出力周波数のもとで所定時間経過後、同インバー
タ回路の出力周波数を降下前の周波数に復帰する
ようにしてなることを特徴とする空気調和機の電
流制御装置。 In an air conditioner in which an AC power source is converted to AC of a predetermined frequency by a frequency converter and a compressor motor is driven by an inverter circuit, the upper limit of the operating current of the compressor motor is set within a range that does not exceed the maximum allowable range. At the same time, when an overcurrent exceeds the upper limit, the output frequency of the inverter circuit is lowered by a certain frequency to avoid an overcurrent condition, and after a predetermined period of time under the same output frequency, the output frequency of the inverter circuit is lowered. A current control device for an air conditioner, characterized in that the current control device returns to the previous frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8885390U JPH0447398U (en) | 1990-08-24 | 1990-08-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8885390U JPH0447398U (en) | 1990-08-24 | 1990-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0447398U true JPH0447398U (en) | 1992-04-22 |
Family
ID=31822428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8885390U Pending JPH0447398U (en) | 1990-08-24 | 1990-08-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0447398U (en) |
-
1990
- 1990-08-24 JP JP8885390U patent/JPH0447398U/ja active Pending