JPH01314865A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH01314865A JPH01314865A JP63145882A JP14588288A JPH01314865A JP H01314865 A JPH01314865 A JP H01314865A JP 63145882 A JP63145882 A JP 63145882A JP 14588288 A JP14588288 A JP 14588288A JP H01314865 A JPH01314865 A JP H01314865A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- temperature
- indoor heat
- detected
- outdoor fan
- 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 15
- 238000005057 refrigeration Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 abstract description 16
- 230000008014 freezing Effects 0.000 abstract description 10
- 238000007710 freezing Methods 0.000 abstract description 10
- 239000002826 coolant Substances 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は冷暖房自在のヒートポンプ式空気調和機に係り
、特に、冷房運転時の室内側熱交換器の凍結防止を図っ
た空気調和機の改良に関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a heat pump type air conditioner that can freely cool and heat the air conditioner, and in particular, is designed to prevent freezing of an indoor heat exchanger during cooling operation. Concerning improvements to air conditioners.
（従来の技術）
従来、この種の空気調和機では、冷房運転時に室外側熱
交換器の吸込４麿が低下し、室内側熱交換器が凍結した
場合には、この冷房運転自体を停止させ、室内側熱交Ｐ
Ａ器の凍結を自然解凍した後、再び冷房運転を再開させ
ている。(Prior art) Conventionally, in this type of air conditioner, if the suction rate of the outdoor heat exchanger decreases during cooling operation and the indoor heat exchanger freezes, the cooling operation itself is stopped. , indoor heat exchanger P
After unit A was allowed to thaw naturally, cooling operation was resumed.
（発明が解決しようとする課題）
しかしながら、このような従来の空気調和機では、室内
側熱交換器の凍結毎に冷房運転を停止させるので、稼動
率が低下するうえに、室外側熱交換器が自然解凍されず
に凍結状態が長く続＜ ｄ３それがあるという課題があ
る。(Problem to be Solved by the Invention) However, in such conventional air conditioners, the cooling operation is stopped every time the indoor heat exchanger freezes, which reduces the operating rate and also causes the outdoor heat exchanger to freeze. There is a problem that the frozen state continues for a long time without being thawed naturally.
そこで本発明は上記事情を＃慮してなされたもので、そ
の目的は稼働率を低下させずに室内側熱交換器の凍結の
防止を図ることができる空気調和機を提供することにあ
る。The present invention has been made in consideration of the above circumstances, and its object is to provide an air conditioner that can prevent the indoor heat exchanger from freezing without reducing the operating rate.
（課題を解決するための手段）
本発明は、コンプレッサ、四方弁、室外フ？ンを付設し
た室外側熱交換器、絞り機構、室内熱交セン勺を付設し
た室内側熱交換器を冷媒配管により順次接続して冷凍サ
イクルを構成した空気調和機において、上記室内熱交セ
ンサを介して検出した上記室内側熱交換器の温度が設定
値以下に低下したときに上記室外ファンの運転回転数を
段階的に低減させるｌ＋’ｌ ｆｉｔ手段を設けたこと
を特徴とする。(Means for Solving the Problems) The present invention provides a compressor, a four-way valve, and an outdoor valve. In an air conditioner in which a refrigeration cycle is constructed by sequentially connecting an outdoor heat exchanger equipped with a throttle mechanism, a throttle mechanism, and an indoor heat exchanger equipped with an indoor heat exchanger through refrigerant piping, the above indoor heat exchange sensor is used. The present invention is characterized in that l+'l fit means is provided for reducing the operating rotational speed of the outdoor fan in stages when the temperature of the indoor heat exchanger detected through the cooling device falls below a set value.
（作用）
空気調和機の冷房運転時に、室外側熱交換器の吸込空気
４痕が外気温の低下等により低下し、このために、室内
側熱交換器の温度が設定値以下に低下すると、この室内
側熱交換器に凍結のおそれが発生する。(Function) During cooling operation of the air conditioner, if the air intake of the outdoor heat exchanger decreases due to a drop in outside temperature, etc., and as a result, the temperature of the indoor heat exchanger decreases below the set value, There is a risk of freezing in this indoor heat exchanger.
そこで、制御手段はこの室内側熱交換器の温度を室内熱
交センサを介して検出している。Therefore, the control means detects the temperature of this indoor heat exchanger via an indoor heat exchanger sensor.
しかも、制御手段はこの室内側熱交換器の温度が設定値
以下に低下したことを検出したとぎには、室外ファンの
運転数を段階的に低減させる。Moreover, once the control means detects that the temperature of the indoor heat exchanger has fallen below the set value, it reduces the number of operations of the outdoor fan in stages.
その結果、室外ファンの運転回転数の低減の分だけ、室
外側熱交換器における冷媒の凝縮作用が低減するので、
ここで凝縮される冷媒の液化Ｗが減少し、室内側熱交換
器内に流入する液冷媒の流入量が減少し、ここでの液冷
媒の蒸発潜熱昂が低減する。As a result, the condensation effect of the refrigerant in the outdoor heat exchanger is reduced by the reduction in the operating speed of the outdoor fan.
The liquefaction W of the refrigerant condensed here is reduced, the amount of liquid refrigerant flowing into the indoor heat exchanger is reduced, and the latent heat of vaporization of the liquid refrigerant here is reduced.
このために、室内側熱交換器が昇温するので、室内側熱
交換器の凍結を防止することができる。For this reason, the temperature of the indoor heat exchanger increases, so that freezing of the indoor heat exchanger can be prevented.
したがって本発明によれば、室内側熱交換器の凍結を検
出したときには、直ちに冷房運転を停止させずに、室外
ファンの運転回転数のみを段階的に低減させるので、稼
動率の向上を図ることができる。Therefore, according to the present invention, when freezing of the indoor heat exchanger is detected, only the operating speed of the outdoor fan is gradually reduced without immediately stopping the cooling operation, thereby improving the operating rate. I can do it.
また、室内側熱交換器の検出温度が設定値以下に低下し
たときには、室外ファンの運転回転数を低減させ、室内
側熱交換器を昇温させるので、室内側熱交換器の凍結を
防止することができる。Additionally, when the detected temperature of the indoor heat exchanger falls below the set value, the operating speed of the outdoor fan is reduced and the temperature of the indoor heat exchanger is increased, thus preventing the indoor heat exchanger from freezing. be able to.
（実施例）
以下本発明の一実施例を第１図〜第３図に基づいて説明
する。(Example) An example of the present invention will be described below based on FIGS. 1 to 3.
第１図は本発明の一実施例の冷凍サイクル図であり、木
実流側はコンプレッサ１、四方弁２、室外ファン３を付
設した室外側熱交換器４、絞り機構である膨張弁５、室
内側熱交換Ｆｉ６を冷媒配管７により順次かつ環状に接
続し、冷媒を循環させる閉じた冷凍サイクルを構成して
いる。FIG. 1 is a refrigeration cycle diagram of an embodiment of the present invention, in which the wood flow side includes a compressor 1, a four-way valve 2, an outdoor heat exchanger 4 equipped with an outdoor fan 3, an expansion valve 5 which is a throttling mechanism, The indoor heat exchangers Fi6 are sequentially and annularly connected by refrigerant pipes 7 to form a closed refrigeration cycle in which refrigerant is circulated.
また、この冷凍サイクルは四方弁２の１，７Ｊ換操作に
より冷媒を、第１図中実線矢印方向に循環させると、冷
房運転される一方、破線矢印方向に循環させるとｒ！ｌ
！ｍ運転されるようになっている。Also, in this refrigeration cycle, when the refrigerant is circulated in the direction of the solid line arrow in FIG. 1 by the 1.7J exchange operation of the four-way valve 2, cooling operation is performed, while when it is circulated in the direction of the broken line arrow, r! l
! It is designed to be operated at m.
上記室内側熱交換器６にはその温度を検出する室内熱交
センサ８が付設されており、室内熱交センサ８には図中
破線で示す信号線を介して制御手段９が接続されている
。The indoor heat exchanger 6 is equipped with an indoor heat exchange sensor 8 that detects its temperature, and a control means 9 is connected to the indoor heat exchange sensor 8 via a signal line indicated by a broken line in the figure. .
制御手段９はマイクロコンピュータ等からなり、信＠線
を介して室外ファン３に電気的に接続されている。The control means 9 is composed of a microcomputer or the like, and is electrically connected to the outdoor fan 3 via a communication line.
制御手段９は室内熱交センサ８を介して検出した室内側
熱交換器６の検出温度Ｔ、が設定値ｔ１以下に低下した
ことを検出したときに、室外ファン３の運転回転数を段
階的に低減させるように構成されている。When the control means 9 detects that the detected temperature T of the indoor heat exchanger 6 detected via the indoor heat exchanger sensor 8 has decreased to a set value t1 or less, the operating speed of the outdoor fan 3 is adjusted in stages. It is configured to reduce the
すなわち、制御手段９は第２図のツーチャートにより示
す制御プログラムを内蔵しており、図中Ｐ１〜Ｐ１２は
フローチャートの各ステップを示す。That is, the control means 9 has a built-in control program shown in the two-chart of FIG. 2, in which P1 to P12 indicate each step of the flowchart.
すなわち、制御手段９はまずＰｌで、室内側熱交１負器
６の検出温度Ｔ、を室内熱交センサ８から読み込み、Ｐ
２で、この検出温度Ｔ、が設定値ｔｉ （例えば−１
℃）以下に低下したか否か、すなわち、Ｔ ≧ｔ１が成
立するか否か判断し、Ｙ［
ＥＳ、すなわち成立する場合はＰ３へ、Ｎｏの場合はＰ
４へそれぞれ分岐して進む。That is, the control means 9 first reads the detected temperature T of the indoor heat exchanger 1 negative device 6 from the indoor heat exchanger sensor 8 at Pl, and then
2, this detected temperature T is the set value ti (for example -1
℃) or below, that is, whether T ≧ t1 holds true, and if Y[ ES, that is, holds true, go to P3;
Branch out and proceed to 4.
Ｐ３では、運転中の室外ファン３の回転数が最高か否か
判断し、ＹＥＳの場合は再びＰｌへ戻り、ＮＯの場合は
Ｐ５で再び室外ファン３の回転数を１ステツプ（１段階
）上げる。At P3, it is determined whether the rotational speed of the outdoor fan 3 during operation is at its highest or not. If YES, the process returns to P1, and if NO, the rotational speed of the outdoor fan 3 is increased by one step (1 step) again at P5. .
これにより、室外側熱交換ｚ４におけ凝縮作用が増大し
、ここで凝縮する冷媒の液化量が増大することにより冷
房運転が一段とアップされる。この侵、再びＰｌの室内
熱交センサ８の読み込みに戻る。As a result, the condensation effect in the outdoor heat exchanger z4 increases, and the amount of liquefied refrigerant condensed here increases, thereby further increasing the cooling operation. After this violation, the process returns to reading the indoor heat exchange sensor 8 of Pl again.
上記室外ファン３の回転数の１スデツブとは室外ファン
３の最高運転回転数から停止までを例えば第３図に示す
ように５段階に均等分割したときの１段階の回転数を示
し、５ステツプまで段階的に低減させたとぎに室外ファ
ン３の運転を停止さＵるように予め設定されている。1 step of the rotation speed of the outdoor fan 3 refers to the rotation speed of one step when the outdoor fan 3 is evenly divided into 5 steps from the maximum operating speed to the stop as shown in FIG. It is set in advance so that the operation of the outdoor fan 3 is stopped when the outdoor fan 3 is gradually reduced to .
一方、Ｐ２でＴ ≧し、が不成立のとき、すなし
わち室内側熱交換器６の検出温度Ｔ、が設定値ｔ１以下
に低下し、凍結のおそれが発生したときには、Ｐ４で室
外ファン３が運転停止（ＯＦＦ＞しているか否か判断し
、Ｎｏ場合はＰ６へ、Ｙ’ＥＳの場合はＰ７へそれぞれ
分岐して進む。On the other hand, when T ≧ does not hold at P2, that is, when the detected temperature T of the indoor heat exchanger 6 falls below the set value t1 and there is a risk of freezing, at P4 the outdoor fan 3 It is determined whether or not the operation is stopped (OFF>), and if No, the process branches to P6, and if Y'ES, the process branches to P7.
Ｐ６では運転中の室外）７ン３の回転数を１ステップ下
げてから、再びＰｌの室内熱交センサ８の読み込みへ戻
り、Ｐ７では冷房運転自体を停止させる。At P6, the rotational speed of the outdoor (7) unit 3 which is in operation is lowered by one step, and then the process returns to reading the indoor heat exchange sensor 8 at P1, and at P7, the cooling operation itself is stopped.
この冷房運転停止により室内側熱交換器６における液冷
媒の蒸発が停止されるので、室内側熱交換器６が昇温し
、その検出湿度Ｔ、が上昇する。By stopping the cooling operation, evaporation of the liquid refrigerant in the indoor heat exchanger 6 is stopped, so the temperature of the indoor heat exchanger 6 increases and its detected humidity T increases.
そこで、Ｐ８で検出湿度Ｔ、を室内熱交ヒンサ８を介し
て読み込み、Ｐ９で、この検出温度Ｔ。Therefore, in P8, the detected humidity T is read through the indoor heat exchanger 8, and in P9, the detected temperature T is read.
が設定値ｔ１以上に昇温しているか否か、すなわち、Ｔ
≧ｔ１が成立するか否か判断し、ＹＥＳ［
の場合はＰｌｏで再び冷房運転を再開させてから、再び
Ｐｌへ戻る。has risen above the set value t1, that is, T
It is determined whether ≧t1 holds true or not, and if YES [, the cooling operation is restarted again in Plo, and then the process returns to Pl again.
一方、Ｐ９でＴ ≧ｔ１が不成立の場合、寸なし
わちＴ ≦１１の成立回数が設定回数Ｎに達したし
か否かＰｌｌで判断し、ＮＯの場合は再びＰ８の室内熱
交センサ８の読み込みに戻り、ＹＥＳの場合はＰｌ２で
空気調和機の異常を表示すると共に、冷房運転自体を停
止させる。On the other hand, if T ≧ t1 does not hold in P9, it is determined by Pll whether the number of times T ≦ 11 is satisfied has reached the set number N, and if it is NO, the indoor heat exchange sensor 8 in P8 is checked again. Returning to reading, if YES, an abnormality of the air conditioner is displayed at Pl2, and the cooling operation itself is stopped.
次に本実施例の作用を説明する。Next, the operation of this embodiment will be explained.
空気調和機の冷房運転時に、第３図に示すように室外側
熱交換器４の吸込温度ｔａ、ｔｂ、ｔｃ。During cooling operation of the air conditioner, the suction temperatures ta, tb, and tc of the outdoor heat exchanger 4 as shown in FIG.
ｔｄが外気温の低下等により低下し、このために、室内
側熱交換器６の温度が設定値ｔ１以下に低下すると、室
内側熱交換器６に凍結のおそれが発生する。When td decreases due to a decrease in outside temperature or the like, and therefore the temperature of the indoor heat exchanger 6 decreases below the set value t1, there is a risk that the indoor heat exchanger 6 will freeze.
そこで、制御手段９は室内熱交センサ８により検出され
た室内側熱交換器６の検出温度Ｔ［を読み込むと共に、
この検出温度Ｔ、が設定値ｔ１以下に低下したことを検
出したときには、ヱ外）１ン３の運転回転数を１ステツ
プだけ段階的に低減させるように第１回目のＡ１の制御
を行なう。Therefore, the control means 9 reads the detected temperature T of the indoor heat exchanger 6 detected by the indoor heat exchanger sensor 8, and
When it is detected that the detected temperature T has decreased below the set value t1, the first control A1 is performed to reduce the operating rotational speed of the first engine 3 step by step by one step.
このために、室外側熱交換器４では、室外ファン３の運
転回転数の１ステツプ低減に相当する分たけ、凝縮力を
低減させ、ここで凝縮される冷媒の液化量を減少させる
。To this end, in the outdoor heat exchanger 4, the condensing force is reduced by an amount corresponding to a one-step reduction in the operating speed of the outdoor fan 3, thereby reducing the amount of refrigerant condensed here.
したがって、室内側熱交換器６内へ流入する液冷媒の流
入賞が減少し、ここでの液冷媒の蒸発潜熱量が減少する
ので、その分、室内側熱交換器６はｔ？ Ｕし、その昇
温の立ち上がりは第３図に示すようにぼぼ垂直となる。Therefore, the flow rate of the liquid refrigerant flowing into the indoor heat exchanger 6 decreases, and the amount of latent heat of vaporization of the liquid refrigerant here decreases, so that the indoor heat exchanger 6 becomes t? As shown in FIG. 3, the rise in temperature is almost vertical.
これ以後、室外ファン３は第１回目Ａ１の１ステツプ低
減後の回転数で運転されるが、さらに、第３図に示すよ
うに室外側熱交換器４の吸込温度ｔａが同ｔｂへ低下し
たために、再び室内側熱交換器６の検出温度Ｔ が設定
値ｔ１以下に低下しし
たときには、室外ファン３の回転数をさらに１ステツプ
低減させ、これまでに合ｎｔ ２ステツプ低減させる。After this, the outdoor fan 3 is operated at the rotation speed after the first step A1 reduction, but as shown in FIG. 3, the suction temperature ta of the outdoor heat exchanger 4 has decreased to the same tb Next, when the detected temperature T of the indoor heat exchanger 6 falls below the set value t1 again, the rotation speed of the outdoor fan 3 is further reduced by one step, reducing the total number of rotations by nt2 steps.
これにより、室内側熱交換器６の検出温度Ｔ。As a result, the detected temperature T of the indoor heat exchanger 6.
が再び昇温するが、さらに、室外側熱交換器４の吸込温
度ｔｂが、ｔｃ、ｔｄへ引き続き低下しＩこだめに、検
出温度Ｔ が再び設定値ｔ１以下に低り
下した場合には、その都度、室外ファン３の運転回転数
を１ステツプ宛低減させ、最終的には室外ファン３の運
転を停止させる。increases again, but the suction temperature tb of the outdoor heat exchanger 4 continues to decrease to tc and td, and the detected temperature T again decreases below the set value t1. Each time, the operating speed of the outdoor fan 3 is reduced by one step, and finally the operation of the outdoor fan 3 is stopped.
したがって、本実施例によれば、室外側熱交換器４の吸
込温度ｔａ−ｔｄの低下により、室内側熱交換器６の温
度が設定値１１以下に低下したときには、直らに室外フ
ァン３の運転を停止させるのではなく、室外ファン３の
運転回転数を段階的に低減させて行くので、空気調和機
の稼動率の向上を図ることができる。Therefore, according to this embodiment, when the temperature of the indoor heat exchanger 6 falls below the set value 11 due to a decrease in the suction temperature ta-td of the outdoor heat exchanger 4, the outdoor fan 3 is immediately started. Since the operating speed of the outdoor fan 3 is gradually reduced instead of being stopped, the operating rate of the air conditioner can be improved.
また、室内側熱交換器６の検出温度ＴＬが設定１ｉｌＩ
ｔ１以下に低下したときに、室外ファン３の運転回転数
を低減させ、室内側熱交換器６を昇温させるので、室内
側熱交換器６の凍結を防止することができる。In addition, the detected temperature TL of the indoor heat exchanger 6 is set to 1ilI.
When the temperature drops below t1, the operating speed of the outdoor fan 3 is reduced and the temperature of the indoor heat exchanger 6 is increased, so that freezing of the indoor heat exchanger 6 can be prevented.
以−り説明したように本発明は、室内側熱交換器の温度
が設定値以下に低下したときに、室外ファンの運転回転
数を段階的に低減させる制御手段を有するので、室内側
熱交換器の凍結防止と稼動率向上とを図ることができる
。As explained above, the present invention includes a control means that reduces the operating speed of the outdoor fan in stages when the temperature of the indoor heat exchanger falls below a set value. It is possible to prevent the equipment from freezing and improve the operating rate.
第１図は本発明に係る空気調和機の一実施例の冷凍サイ
クル図、第２図は第１図で示す制御手段の制御プログラ
ムを示すブロック図、第３図は第１図で示す３制御手段
の作用を示すグラフである。
１・・・コンプレッサ、２・・・四方弁、３・・・室外
ファン、４・・・室外側熱交換器、５・・・絞り機構、
６・・・室内側熱交換器、７・・・冷媒配管、８・・・
室内熱交センサ、９・・・制御手段。
ｒ岡−−−−−一―−−−−−瞬−−伊■−−−］第３
図Fig. 1 is a refrigeration cycle diagram of an embodiment of an air conditioner according to the present invention, Fig. 2 is a block diagram showing a control program of the control means shown in Fig. 1, and Fig. 3 is a 3-control diagram shown in Fig. 1. It is a graph showing the effect of the means. DESCRIPTION OF SYMBOLS 1... Compressor, 2... Four-way valve, 3... Outdoor fan, 4... Outdoor heat exchanger, 5... Throttle mechanism,
6... Indoor heat exchanger, 7... Refrigerant piping, 8...
Indoor heat exchange sensor, 9...control means. roka------1---------shun---I■---] 3rd
figure
Claims (1)
交換器、絞り機構、室内熱交センサを付設した室内側熱
交換器を冷媒配管により順次接続して冷凍サイクルを構
成した空気調和機において、上記室内熱交センサを介し
て検出した上記室内側熱交換器の温度が設定値以下に低
下したときに上記室外ファンの運転回転数を段階的に低
減させる制御手段を設けたことを特徴とする空気調和機
。In an air conditioner in which a refrigeration cycle is configured by sequentially connecting an outdoor heat exchanger equipped with a compressor, a four-way valve, and an outdoor fan, an indoor heat exchanger equipped with a throttling mechanism, and an indoor heat exchange sensor via refrigerant piping, The air is characterized by being provided with a control means that reduces the operating rotation speed of the outdoor fan in stages when the temperature of the indoor heat exchanger detected via the indoor heat exchanger sensor falls below a set value. harmonizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63145882A JPH01314865A (en) | 1988-06-15 | 1988-06-15 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63145882A JPH01314865A (en) | 1988-06-15 | 1988-06-15 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01314865A true JPH01314865A (en) | 1989-12-20 |
Family
ID=15395232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63145882A Pending JPH01314865A (en) | 1988-06-15 | 1988-06-15 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01314865A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05256528A (en) * | 1992-03-12 | 1993-10-05 | Fujitsu General Ltd | Control device for air-conditioner |
| WO2018047238A1 (en) * | 2016-09-06 | 2018-03-15 | 三菱電機株式会社 | Refrigeration cycle device |
| CN113865067A (en) * | 2021-10-27 | 2021-12-31 | 美的集团武汉暖通设备有限公司 | Multi-split air conditioner, control method thereof and computer readable storage medium |
-
1988
- 1988-06-15 JP JP63145882A patent/JPH01314865A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05256528A (en) * | 1992-03-12 | 1993-10-05 | Fujitsu General Ltd | Control device for air-conditioner |
| WO2018047238A1 (en) * | 2016-09-06 | 2018-03-15 | 三菱電機株式会社 | Refrigeration cycle device |
| JPWO2018047238A1 (en) * | 2016-09-06 | 2018-12-13 | 三菱電機株式会社 | Refrigeration cycle equipment |
| CN113865067A (en) * | 2021-10-27 | 2021-12-31 | 美的集团武汉暖通设备有限公司 | Multi-split air conditioner, control method thereof and computer readable storage medium |
| CN113865067B (en) * | 2021-10-27 | 2022-12-20 | 美的集团武汉暖通设备有限公司 | Multi-split air conditioner, control method thereof and computer readable storage medium |
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