JPH07225043A - Control method of air conditioner - Google Patents

Abstract

PURPOSE:To air-condition a plurality of rooms comfortably by determining, a timing to switching-off a compressor, when a plurality of indoor machines are simultaneously rendered to cooling operation, in consideration of states of other rooms and the state of a load of each room. CONSTITUTION:A refrigerant upon cooling operation flows in the direction of an arrow. An outdoor machine 1 and indoor machines 2 are connected with each other through a stunt circuit (refrigerant tube) including capillary tubes 6a, 6b and opening/closing valves 7a, 7b for example. Any of the opening/closing valves 7a, 7b is closed when room temperature on the side of the indoor machines 2A, 2B is lowered to a set value while it is opened when the same is raised to the set value +1 deg.C. A compressor 3 is interrupted for 3 minutes since the time the room temperature on the side of the indoor machines 2A, 2B is lowered to the set temperature. When a heat load of a chamber A or a chamber B is above a predetermined value, the operation of the compressor 3 is continued until the room temperature of the room A or the room B reaches the set value -1 deg.C.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は一つの室外機に複数の室
内機を接続した空気調和機の制御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling an air conditioner in which a plurality of indoor units are connected to one outdoor unit.

【０００２】[0002]

【従来の技術】一つの室外機に複数の室内機を接続した
マルチエアコンと呼ばれる空気調和機では複数の室内機
を同時に運転したり、何れか一方を選択的に運転したり
することができるようになっている。図１はマルチエア
コンの冷凍サイクルの一例を表したもので、圧縮機３か
ら吐出する高温高圧の冷媒は四方弁４を経由させた後、
冷房運転時であれば室外熱交換器５へ流通させ、室内機
２Ａ，２Ｂへの冷媒はキャピラリーチューブ６ａ，６ｂ
および開閉弁７ａ，７ｂからなる分流回路を介してそれ
ぞれの室内熱交換器９ａ，９ｂに流通させ、戻りの冷媒
は室外機１内で合流させた後、再度四方弁４を経由さ
せ、圧縮機３に戻すようになっている。なお、室外機１
には圧縮機３、四方弁４、開閉弁７ａ，７ｂ等を制御す
る室外機制御部８があり、室内機２Ａ，２Ｂには図示さ
れてないそれぞれの室内送風機等を制御する室内機制御
部10ａ，10ｂが設けられており、これらと室外機制御部
８間は信号線で結ばれている。開閉弁７ａ，７ｂは対応
する室内機２Ａ，２Ｂの運転開始に伴って開かれ、冷房
運転であれば室温Ｔｒが図４に示す設定温度Ｔｓまで低
下すると閉じられ、設定温度Ｔｓ＋１℃まで上昇すると
開かれる。また、圧縮機３は開閉弁７ａ，７ｂのいずれ
か一方が「開」になっていればＯＦＦされることはない
が、両方が「閉」の状態になった場合にはＯＦＦされ、
その時点ｔｂから例えば３分間が経過するｔｄの時点ま
では冷凍サイクルの圧力バランスを取るためにＯＮさせ
ないようになっている。2. Description of the Related Art In an air conditioner called a multi air conditioner in which a plurality of indoor units are connected to a single outdoor unit, it is possible to operate a plurality of indoor units at the same time or selectively operate one of them. It has become. FIG. 1 shows an example of a refrigeration cycle of a multi-air conditioner, in which a high-temperature and high-pressure refrigerant discharged from the compressor 3 is passed through a four-way valve 4 and then
During the cooling operation, the refrigerant is circulated to the outdoor heat exchanger 5, and the refrigerant to the indoor units 2A and 2B is supplied to the capillary tubes 6a and 6b.
Then, the refrigerant is circulated to the respective indoor heat exchangers 9a and 9b through a flow dividing circuit composed of the on-off valves 7a and 7b, the returned refrigerants are merged in the outdoor unit 1, and then the refrigerant is passed through the four-way valve 4 again. It is supposed to return to 3. The outdoor unit 1
Has an outdoor unit control unit 8 for controlling the compressor 3, the four-way valve 4, the on-off valves 7a, 7b, etc., and an indoor unit control unit for controlling the indoor blowers, etc. not shown in the indoor units 2A, 2B. 10a and 10b are provided, and these are connected to the outdoor unit controller 8 by a signal line. The on-off valves 7a, 7b are opened with the start of operation of the corresponding indoor units 2A, 2B, and in the cooling operation, they are closed when the room temperature Tr decreases to the set temperature Ts shown in FIG. 4, and rises to the set temperature Ts + 1 ° C. be opened. Further, the compressor 3 is not turned off when either one of the on-off valves 7a and 7b is "open", but is turned off when both of them are "closed",
From that time point tb to the time point of td when, for example, 3 minutes elapse, the refrigeration cycle is not turned on in order to balance the pressure of the refrigeration cycle.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、室内機
２Ａ，２Ｂを設置する二つの部屋は大きさが異なった
り、和室と洋室であったりするため熱負荷が異なるとと
もに、運転開始時刻や設定温度Ｔｓが異なる場合もあ
る。このように空調条件が異なれば例えば図４に示すよ
うにＡ，Ｂ両室の開閉弁が動作するタイミングも異な
り、室内機２Ａに対応する開閉弁７ａが「開」になるｔ
ｃの直前ｔｂに室内機２Ｂに対応する開閉弁７ｂが
「閉」になることもある。このように開閉弁７ａ，７ｂ
が共に「閉」の状態になると先にも述べたように圧縮機
３の運転が３分間停止されるためｔｃの時点でＡ室の温
度がＴｓ＋１℃まで上昇して開閉弁７ａが「開」になっ
たとしても圧縮機３の運転は再開されず、圧縮機３の運
転が再開されるｔｄの時点までＡ室の温度はＴｓ＋１℃
の上限値を越えて上昇し続けるという不具合が発生し、
快適性が損なわれることになる。したがって、本発明に
おいては、このような不具合を発生させることのない空
気調和機の制御方法を提供することを目的としている。However, the two rooms in which the indoor units 2A and 2B are installed have different sizes, and because they are a Japanese-style room and a Western-style room, the heat loads are different, and the operation start time and the set temperature Ts are also different. May be different. If the air conditioning conditions are different as described above, for example, as shown in FIG. 4, the opening / closing valves of both the A and B chambers are also operated differently, and the opening / closing valve 7a corresponding to the indoor unit 2A is opened.
The open / close valve 7b corresponding to the indoor unit 2B may be "closed" immediately before tc. In this way, the on-off valves 7a, 7b
When both are in the "closed" state, the operation of the compressor 3 is stopped for 3 minutes as described above, so that the temperature of the chamber A rises to Ts + 1 ° C at the time of tc and the on-off valve 7a is "opened". Even if it becomes, the operation of the compressor 3 is not restarted, and the temperature of the room A is Ts + 1 ° C. until time td when the operation of the compressor 3 is restarted.
The problem that it continues to rise beyond the upper limit of
Comfort will be compromised. Therefore, it is an object of the present invention to provide an air conditioner control method that does not cause such a problem.

【０００４】[0004]

【課題を解決するための手段】本発明は上記の課題を解
決するためになされたものであり、室外機よりの吐出冷
媒を複数の室内機に分流する分流回路のそれぞれに開閉
弁を設け、複数の部屋を任意に空調するようにしてなる
ものにおいて、前記複数の室内機を同時運転する際、前
記開閉弁の開閉制御における閉塞のタイミングを他室の
運転状態と、それぞれの部屋の熱負荷の状態とから判断
し、決定するようにした。The present invention has been made to solve the above-mentioned problems, and an opening / closing valve is provided in each of the flow dividing circuits for dividing the refrigerant discharged from the outdoor unit into a plurality of indoor units, In a case where a plurality of rooms are arbitrarily air-conditioned, when simultaneously operating the plurality of indoor units, the timing of closing in the opening / closing control of the opening / closing valve is different from the operating state of other rooms and the heat load of each room. I decided to make a decision based on the condition.

【０００５】[0005]

【作用】上記の制御方法であれば、複数の室内機を同時
運転する際、それぞれの室内機に対応する開閉弁の閉塞
のタイミングを室内機別に単独で決定せず、他室の運転
状態と、それぞれの部屋の熱負荷の状態とから判断し決
定するという相手を意識した運転を行うことができる。With the above control method, when a plurality of indoor units are simultaneously operated, the timing of closing the on-off valve corresponding to each indoor unit is not individually determined for each indoor unit, but the operation state of other rooms is not determined. , It is possible to perform the operation in consideration of the other party, which is determined and determined from the heat load state of each room.

【０００６】[0006]

【実施例】以下、本発明の一実施例を図１〜図３に基づ
いて説明する。図１はマルチエアコンの冷凍サイクルの
一例を表したもので、１は室外機、２Ａ，２Ｂは同時ま
たは何れか一方を任意に運転できる室内機である。室外
機１には圧縮機３、冷媒の流れを切り換える四方弁４、
室外熱交換器５、室内機２Ａ，２Ｂに対応するキャピラ
リーチューブ６ａ，６ｂおよび開閉弁７ａ，７ｂの他、
圧縮機３，四方弁４，開閉弁７ａ，７ｂ，図示されてな
い室外送風機等を制御する室外機制御部８が配置されて
いる。一方、室内機２Ａ，２Ｂには室内熱交換器９ａ，
９ｂの他、図示されてないそれぞれの室内送風機等を制
御する室内機制御部10ａ，10ｂが配置されており、室外
機制御部８と室内機制御部10ａ，10ｂ間はそれぞれ信号
線で結ばれている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows an example of a refrigeration cycle of a multi-air conditioner. Reference numeral 1 is an outdoor unit, and 2A and 2B are indoor units capable of operating either simultaneously or arbitrarily. The outdoor unit 1 has a compressor 3, a four-way valve 4 for switching the flow of refrigerant,
In addition to the outdoor heat exchanger 5, the capillary tubes 6a and 6b and the opening / closing valves 7a and 7b corresponding to the indoor units 2A and 2B,
An outdoor unit controller 8 for controlling the compressor 3, the four-way valve 4, the on-off valves 7a and 7b, an outdoor blower (not shown), and the like are arranged. On the other hand, the indoor units 2A and 2B have indoor heat exchangers 9a,
In addition to 9b, indoor unit control units 10a and 10b for controlling respective indoor blowers (not shown) are arranged, and the outdoor unit control unit 8 and the indoor unit control units 10a and 10b are connected by signal lines, respectively. ing.

【０００７】室内機２Ａ，２Ｂは同時または何れか一方
を任意に運転することができるが、本実施例の特徴とす
るところは室内機２Ａ，２Ｂを同時運転する際の圧縮機
３および開閉弁７ａ，７ｂの制御に関するものであっ
て、室内機２Ａ，２Ｂの運転情報を室外機制御部に集
め、例えばＡ室の運転状態と、それぞれの部屋の熱負荷
の状態とから開閉弁７ａ，７ｂを「閉」にするタイミン
グ、圧縮機をＯＦＦするタイミングを決定するようにし
たことである。以下、図２および図３を参照しながら具
体的に説明する。図２は各部屋の熱負荷の状態を開閉弁
７ａ，７ｂの「開」から「閉」までの時間によって判断
させる際の流れ図である。ステップＳＴ１で例えば開閉
弁７ａの「開」が検知されるとステップＳＴ２でタイマ
ーをスタートさせて開閉弁７ａの開放時間を積算させ
る。ステップＳＴ３で開閉弁７ａの「閉」が検知される
とステップＳＴ４で開放時間の積算を停止させ、開閉弁
７ａの閉塞時間の積算を開始させる。Although the indoor units 2A and 2B can be operated simultaneously or arbitrarily, one of the features of the present embodiment is that the compressor 3 and the opening / closing valve when the indoor units 2A and 2B are operated simultaneously. 7a, 7b, and the operation information of the indoor units 2A, 2B is collected in the outdoor unit control unit. For example, the open / close valves 7a, 7b are determined based on the operating state of the room A and the thermal load state of each room. That is, the timing of closing the valve and the timing of turning off the compressor are determined. Hereinafter, a specific description will be given with reference to FIGS. 2 and 3. FIG. 2 is a flow chart when the state of heat load of each room is judged by the time from opening to closing of the on-off valves 7a and 7b. For example, when "open" of the opening / closing valve 7a is detected in step ST1, a timer is started in step ST2 to integrate the opening time of the opening / closing valve 7a. When "closed" of the open / close valve 7a is detected in step ST3, the integration of the open time is stopped in step ST4, and the integration of the closed time of the open / close valve 7a is started.

【０００８】ステップＳＴ５で開閉弁７ａの「開」が検
知されるとステップＳＴ６で閉塞時間の積算を停止させ
る。ステップＳＴ７では開閉弁７ａの開放時間と閉塞時
間の和に所定の係数、例えば０．３を掛けたものと開閉
弁７ａの閉塞時間とを比較し、閉塞時間の方が大のと
き、つまり、「開」と「閉」の１サイクルで７割の時間
が冷房運転だった場合は熱負荷が大きいと判断させ、ス
テップＳＴ８でＦ＝１とした後、ステップＳＴ９でタイ
マーをリセットし、ステップＳＴ１にリターンさせる．
もし、ステップＳＴ７での判定で閉塞時間の方が小のと
き、つまり、「開」と「閉」の１サイクルで冷房運転時
間が７割以下であった場合は熱負荷が小さいと判断さ
せ、ステップＳＴ10でＦ＝０とした後、ステップＳＴ11
でタイマーをリセットし、ステップＳＴ１にリターンさ
せる。このようにしてＡ室，Ｂ室の熱負荷の大小を判断
させる。When "open" of the on-off valve 7a is detected in step ST5, integration of the closing time is stopped in step ST6. In step ST7, the sum of the opening time and closing time of the opening / closing valve 7a is multiplied by a predetermined coefficient, for example, 0.3, and the closing time of the opening / closing valve 7a is compared, and when the closing time is longer, that is, If 70% of the time in one cycle of "open" and "closed" is cooling operation, it is determined that the heat load is large, F = 1 is set in step ST8, the timer is reset in step ST9, and then step ST1 Return to.
If the blockage time is shorter than that determined in step ST7, that is, if the cooling operation time is 70% or less in one cycle of "open" and "closed", it is determined that the heat load is small, After setting F = 0 in step ST10, step ST11
Reset the timer with and return to step ST1. In this way, the magnitude of the heat load of the room A and the room B is judged.

【０００９】次に図３について説明する。図３は室温調
節の流れ図であって、この図では説明の都合上、室内機
２Ａ，２Ｂが設置されている二つの部屋をＡ室，Ｂ室と
呼ぶとともに、室内機２Ａ，２Ｂにそれぞれ対応する二
つの開閉弁７ａ，７ｂをＡ室弁，Ｂ室弁と呼ぶことにし
ている。ステップＳＴ１で室温が設定されると、ステッ
プＳＴ２では室温Ｔｒが設定温度Ｔｓ＋１℃より高いか
どうかの判定がなされ、高ければステップＳＴ３でＡ室
弁を「開」、圧縮機３をＯＮにして冷房運転を行う。ス
テップＳＴ４では室温Ｔｒが設定温度Ｔｓに達したかど
うかを判断する。室温Ｔｒが設定温度Ｔｓに達するとス
テップＳＴ５でＢ室が運転中であるかどうかを調べ、運
転中であればステップＳＴ６でＢ室の運転状態（圧縮機
３をＯＮさせる条件になっているかどうか？）を調べる
が、運転中でなければステップＳＴ９でＡ室弁を閉じ、
ステップＳＴ17に進めて圧縮機３をＯＦＦする。ステッ
プＳＴ18では圧縮機３を３分経過するまで起動させない
ようにする。Next, FIG. 3 will be described. FIG. 3 is a flow chart of room temperature control. In this figure, for convenience of explanation, the two rooms in which the indoor units 2A and 2B are installed are referred to as room A and room B, and correspond to the indoor units 2A and 2B, respectively. The two on-off valves 7a and 7b are referred to as an A chamber valve and a B chamber valve. When the room temperature is set in step ST1, it is determined in step ST2 whether the room temperature Tr is higher than the set temperature Ts + 1 ° C. If it is higher, the room A valve is “opened” in step ST3 and the compressor 3 is turned on to cool the room. Drive. In step ST4, it is determined whether the room temperature Tr has reached the set temperature Ts. When the room temperature Tr reaches the set temperature Ts, it is checked in step ST5 whether or not the room B is in operation. If the room temperature Tr is in operation, in step ST6 the operation state of the room B (whether or not the condition for turning on the compressor 3 is satisfied). ?), But if it is not in operation, close the chamber A valve in step ST9,
In step ST17, the compressor 3 is turned off. In step ST18, the compressor 3 is not activated until 3 minutes have passed.

【００１０】Ｂ室運転中で、かつ、ステップＳＴ６での
判定でＢ室側が圧縮機３をＯＮさせている時はステップ
ＳＴ７に進め、Ａ室弁を「閉」にしてステップＳＴ２に
リターンさせる。Ｂ室が圧縮機３をＯＮさせていない場
合はステップＳＴ10でＢ室の室温Ｔｒと設定温度Ｔｓと
を比較し、Ｂ室室温Ｔｒ＞Ｂ室設定温度Ｔｓの場合（Ｂ
室設定温度Ｔｓ＋１℃＜Ｂ室室温Ｔｒ＜Ｂ室設定温度Ｔ
ｓ）はステップＳＴ11に進めてＢ室弁を「開」にしてＢ
室の冷房運転を開始させてからステップＳＴ７でＡ室弁
を「閉」にし、圧縮機３を停止させないようにする。ス
テップＳＴ10の判定でＢ室も設定温度Ｔｓ以下だった場
合はステップＳＴ13およびステップＳＴ15でＡ室および
Ｂ室の熱負荷を判断し、Ａ室の熱負荷が高い場合はステ
ップＳＴ13からステップＳＴ14に進めてＡ室を、また、
Ｂ室の熱負荷が高い場合はステップＳＴ15からステップ
ＳＴ16に進めてＢ室を冷房運転させる。When the room B is in operation and the compressor B is turned on by the room B side in the determination in step ST6, the process proceeds to step ST7 and the room A valve is "closed" to return to step ST2. When the room B does not turn on the compressor 3, in step ST10, the room temperature Tr of the room B is compared with the set temperature Ts, and when the room temperature Tr of the room B> the set temperature Ts of the room B (B
Room setting temperature Ts + 1 ° C <B room room temperature Tr <B room setting temperature T
In step s), proceed to step ST11 to open the B chamber valve to B
After the room cooling operation is started, the room A valve is closed in step ST7 so that the compressor 3 is not stopped. If the room B is also below the set temperature Ts in the judgment of step ST10, the heat loads of the rooms A and B are judged in steps ST13 and ST15, and if the heat load of the room A is high, the process proceeds from step ST13 to step ST14. Room A again
When the heat load of the room B is high, the process proceeds from step ST15 to step ST16 to perform the cooling operation of the room B.

【００１１】ただし、ステップＳＴ７およびステップＳ
Ｔ16に示す判定基準から分かるように熱負荷の高い部屋
も設定温度Ｔｓ−１℃以下までは冷房運転は行わない。
なお、ステップＳＴ８でＡ室弁を「開」にするかどうか
の判断はＢ室の制御によりＡ室弁を「開」にされた時の
判別である。以上のように制御すれば圧縮機がＯＦＦと
なる場合は両部屋共室温が設定温度以下で、かつ、熱負
荷の高い部屋は設定温度Ｔｓ−１℃以下となるため、前
述の圧縮機停止後の３分間の冷房運転停止による室温調
節の妨げが少なくなる。ところで、本実施例では以上の
制御処理を主として室外機制御部８で行うようになって
いるが、これに限らず、例えば室内機２Ａ，２Ｂの運転
情報を互いに室外機制御部８を介して得るようにしても
よく、又、室内機２Ａ，２Ｂ間に信号線を設けて他室の
運転情報を得、上述のような制御を行ってもよい。However, step ST7 and step S
As can be seen from the criterion shown in T16, even in a room with a high heat load, the cooling operation is not performed until the set temperature Ts-1 ° C or lower.
In step ST8, the determination as to whether to open the A chamber valve is "open" when the A chamber valve is opened by the control of the B chamber. If the compressor is turned off by controlling as described above, the room temperature of both rooms is below the set temperature, and the room with a high heat load is below the set temperature Ts-1 ° C. There is less hindrance to room temperature control due to the suspension of cooling operation for 3 minutes. By the way, in the present embodiment, the above control processing is mainly performed by the outdoor unit controller 8, but the present invention is not limited to this, and the operation information of the indoor units 2A and 2B is mutually transmitted via the outdoor unit controller 8, for example. Alternatively, a signal line may be provided between the indoor units 2A and 2B to obtain operation information of another room, and the above-described control may be performed.

【００１２】[0012]

【発明の効果】以上、説明したように制御される空気調
和機であるならば、複数の室内機を同時運転する際、そ
れぞれの室内機に対応する開閉弁の閉塞のタイミングを
室内機別に単独で決定せず、他室の運転状態と、それぞ
れの部屋の熱負荷の状態とから判断し、決定するように
なっており、場合によっては圧縮機の運転時間が延長さ
れるので一方の室温が上昇してしまうような不具合も解
消され、より快適な空調が行える。As described above, in the case of the air conditioner controlled as described above, when operating a plurality of indoor units at the same time, the closing timing of the on-off valve corresponding to each indoor unit is independently set for each indoor unit. The operating temperature of the other room and the heat load status of each room are not used to make a decision. Problems such as rising are also eliminated, and more comfortable air conditioning can be performed.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明および従来例に係わるマルチエアコンの
冷凍サイクルとその制御系統図である。FIG. 1 is a refrigeration cycle of a multi-air conditioner according to the present invention and a conventional example and a control system diagram thereof.

【図２】本発明の一実施例を示す熱負荷の判定に関する
フローチャートである。FIG. 2 is a flowchart relating to heat load determination according to an embodiment of the present invention.

【図３】本発明の一実施例を示す冷房運転時の室温調節
のフローチャートである。FIG. 3 is a flowchart of room temperature adjustment during cooling operation according to an embodiment of the present invention.

【図４】従来の冷房運転時の制御動作例を示すタイムチ
ャートである。FIG. 4 is a time chart showing an example of conventional control operation during cooling operation.

【符号の説明】[Explanation of symbols]

１ 室外機 ２Ａ 室内機 ２Ｂ 室内機 ３ 圧縮機 ４ 四方弁 ５ 室外熱交換器 ６ａ キャピラリーチューブ ６ｂ キャピラリーチューブ ７ａ 開閉弁 ７ｂ 開閉弁 ８ 室外機制御部 ９ａ 室内熱交換器 ９ｂ 室内熱交換器 10ａ 室内機制御部 10ｂ 室内機制御部 1 Outdoor unit 2A Indoor unit 2B Indoor unit 3 Compressor 4 Four-way valve 5 Outdoor heat exchanger 6a Capillary tube 6b Capillary tube 7a Open / close valve 7b Open / close valve 8 Outdoor unit controller 9a Indoor heat exchanger 9b Indoor heat exchanger 10a Indoor unit Controller 10b Indoor unit controller

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 室外機よりの吐出冷媒を複数の室内機に
分流する分流回路のそれぞれに開閉弁を設け、複数の部
屋を任意に空調するようにしてなるものにおいて、前記
複数の室内機を同時運転する際、前記開閉弁の開閉制御
における閉塞のタイミングを他室の運転状態と、それぞ
れの部屋の熱負荷の状態とから判断し、決定するように
してなることを特徴とする空気調和機の制御方法。1. A structure in which an on-off valve is provided in each of the flow dividing circuits for dividing the refrigerant discharged from an outdoor unit into a plurality of indoor units to arbitrarily air-condition a plurality of rooms. An air conditioner characterized in that, when operating simultaneously, the closing timing in the opening / closing control of the opening / closing valve is judged and determined from the operating state of another room and the heat load state of each room. Control method. 【請求項２】 前記開閉弁の開放時間と閉塞時間をそれ
ぞれ積算し、両積算値の和に所定の係数を掛けたものを
閉塞時間と比較し、比較値から前記熱負荷の大小を判定
するようにしてなる請求項１記載の空気調和機の制御方
法。2. The opening time and closing time of the on-off valve are integrated respectively, and the sum of both integrated values multiplied by a predetermined coefficient is compared with the closing time, and the magnitude of the heat load is determined from the comparison value. The method for controlling an air conditioner according to claim 1, wherein the method is as described above. 【請求項３】 前記複数の室内機の制御処理を前記室外
機の制御部でおこなうようにしてなる請求項１記載の空
気調和機の制御方法。3. The method for controlling an air conditioner according to claim 1, wherein the control processing of the plurality of indoor units is performed by a control unit of the outdoor unit. 【請求項４】 前記他室の運転に関する情報を前記室外
機の制御部を介して得るようにしてなる請求項１記載の
空気調和機の制御方法。4. The method for controlling an air conditioner according to claim 1, wherein the information on the operation of the other room is obtained through the control unit of the outdoor unit. 【請求項５】 前記複数の室内機間に信号線を設け、他
室の運転情報を得るようにしてなる請求項１記載の空気
調和機の制御方法。5. The method for controlling an air conditioner according to claim 1, wherein a signal line is provided between the plurality of indoor units to obtain operation information of another room.