JPH0380261U - - Google Patents
Info
- Publication number
- JPH0380261U JPH0380261U JP14045589U JP14045589U JPH0380261U JP H0380261 U JPH0380261 U JP H0380261U JP 14045589 U JP14045589 U JP 14045589U JP 14045589 U JP14045589 U JP 14045589U JP H0380261 U JPH0380261 U JP H0380261U
- Authority
- JP
- Japan
- Prior art keywords
- superheat
- pid
- degree
- pid constant
- expansion valve
- 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
- 239000003507 refrigerant Substances 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Air Conditioning Control Device (AREA)
Description
第１図ないし第３図には本考案の１実施例を示
され、第１図はヒートポンプの冷媒回路図、第２
図はコントローラの制御ブロツク図、第３図はコ
ントローラの制御フローチヤートである。第４図
は従来のヒートポンプの冷媒回路図、第５図は冷
媒配管の長さとむだ時間との関係を示す線図、第
６図は圧縮機の回転数とむだ時間との関係を示す
線図、第７図はむだ時間と安定限界ゲインとの関
係を示す線図である。
圧縮機……１、凝縮器……２、電子膨張弁……
３、蒸発器……４、コントローラ……３０、冷媒
配管……９，１０，１１，１２、入力装置……１
３、過熱度設定器……１４、飽和温度算出手段…
…１５、過熱度算出手段……１６、偏差演算手段
……１７、ＰＩＤ演算器……１８、ＰＩＤ定数記
憶手段……１９、ＰＩＤ定数補正手段……２０。
1 to 3 show one embodiment of the present invention, and FIG. 1 is a refrigerant circuit diagram of a heat pump, and FIG.
The figure is a control block diagram of the controller, and FIG. 3 is a control flowchart of the controller. Figure 4 is a refrigerant circuit diagram of a conventional heat pump, Figure 5 is a diagram showing the relationship between refrigerant piping length and dead time, and Figure 6 is a diagram showing the relationship between compressor rotation speed and dead time. , FIG. 7 is a diagram showing the relationship between dead time and stability limit gain. Compressor...1, Condenser...2, Electronic expansion valve...
3, Evaporator...4, Controller...30, Refrigerant piping...9, 10, 11, 12, Input device...1
3. Superheat degree setting device... 14. Saturation temperature calculation means...
...15, superheat degree calculation means...16, deviation calculation means...17, PID calculation unit...18, PID constant storage means...19, PID constant correction means...20.
Claims (1)
順に冷媒配管によつて連結してなるヒートポンプ
において、上記蒸発器の出口の冷媒過熱度を算出
する過熱度算出手段と、算出された過熱度と設定
過熱度との偏差を演算する偏差演算手段と、上記
冷媒配管の長さに対応するＰＩＤ定数を選定する
ための入力装置と、選定されたＰＩＤ定数を上記
圧縮機の回転数に対応して補正するＰＩＤ定数の
補正手段と、補正されたＰＩＤ定数を用いて上記
偏差をＰＩＤ演算することにより上記電子膨張弁
の操作量を算出するＰＩＤ演算手段とからなる電
子膨張弁のフイードバツグ制御回路を具備するこ
とを特徴とするヒートポンプ。 In a heat pump comprising a compressor, a condenser, an electronic expansion valve, and an evaporator connected in this order by refrigerant piping, a superheat degree calculating means for calculating the degree of superheat of the refrigerant at the outlet of the evaporator, and a calculated degree of superheat. and a set degree of superheat; an input device for selecting a PID constant corresponding to the length of the refrigerant pipe; and an input device for selecting a PID constant corresponding to the length of the refrigerant pipe; A feedback control circuit for an electronic expansion valve includes a PID constant correction means for correcting the PID constant, and a PID calculation means for calculating the operation amount of the electronic expansion valve by performing a PID calculation on the deviation using the corrected PID constant. A heat pump characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14045589U JPH0380261U (en) | 1989-12-04 | 1989-12-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14045589U JPH0380261U (en) | 1989-12-04 | 1989-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0380261U true JPH0380261U (en) | 1991-08-16 |
Family
ID=31687430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14045589U Pending JPH0380261U (en) | 1989-12-04 | 1989-12-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0380261U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2013160949A1 (en) * | 2012-04-26 | 2015-12-21 | 三菱電機株式会社 | Air conditioner |
-
1989
- 1989-12-04 JP JP14045589U patent/JPH0380261U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2013160949A1 (en) * | 2012-04-26 | 2015-12-21 | 三菱電機株式会社 | Air conditioner |
| US9976766B2 (en) | 2012-04-26 | 2018-05-22 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
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