JP2810763B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP2810763B2 JP2810763B2 JP9422390A JP9422390A JP2810763B2 JP 2810763 B2 JP2810763 B2 JP 2810763B2 JP 9422390 A JP9422390 A JP 9422390A JP 9422390 A JP9422390 A JP 9422390A JP 2810763 B2 JP2810763 B2 JP 2810763B2
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- JP
- Japan
- Prior art keywords
- indoor unit
- indoor
- capacity
- opening
- unit
- 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.)
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Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は室外ユニットに複数の室内ユニットを接続し
た空気調和機に関し、特に、室内ユニット間に高低差が
ある場合の各室内ユニットの能力補正手段に関するもの
である。Description: TECHNICAL FIELD The present invention relates to an air conditioner in which a plurality of indoor units are connected to an outdoor unit, and in particular, the capacity correction of each indoor unit when there is a height difference between the indoor units. It is about means.
［従来の技術］ 従来、複数の室内ユニットを共通の室外ユニットに接
続してなる空気調和機は、特開昭62−102046号公報に記
載のように、室内ユニットの冷媒流路にある膨張弁の開
度をその室内ユニットの要求能力に応じて決めていた。2. Description of the Related Art Conventionally, an air conditioner in which a plurality of indoor units are connected to a common outdoor unit is disclosed in Japanese Patent Application Laid-Open No. 62-102046. Was determined according to the required capacity of the indoor unit.
［発明が解決しようとする課題］ 上記従来技術は、室内ユニット間に高低差がある場
合、暖房時において各室内ユニットに作用する冷媒液ヘ
ッドが異なることにより、各室内ユニットへの冷媒流量
の配分が影響を受けることについて配慮がされておら
ず、低い位置に有る室内ユニットが能力不足となる問題
があった。[Problems to be Solved by the Invention] In the above-described conventional technology, when there is a difference in height between indoor units, the refrigerant liquid head acting on each indoor unit during heating is different, so that the refrigerant flow rate is distributed to each indoor unit. However, there is a problem that the indoor unit located at a low position has insufficient capacity.
本発明は、室内ユニット間に高低差がある場合、暖房
時に低い位置に設定されている室内ユニットに生じる能
力不足を解消し、各室内ユニットへの冷媒流量の配分を
適正に補正することを目的とする。An object of the present invention is to solve the problem of insufficient capacity of an indoor unit that is set at a low position during heating when there is a height difference between indoor units, and to appropriately correct the distribution of the refrigerant flow rate to each indoor unit. And
［課題を解決するための手段］ 上記目的を達成するため、第１の本発明による空気調
和機は、圧縮機および室外熱交換機を有する室外ユニッ
トに、室内熱交換器を夫々有し暖房運転される室内ユニ
ットを並列に複数台接続してなり、前記室内ユニットの
設置位置に高低差がある空気調和機であって、高い位置
にある室内ユニットの冷媒流路の抵抗を低い位置にある
室内ユニットと冷媒流路の抵抗よりも大きくしてなる空
気調和機において、前記各室内ユニットの冷媒流路に開
度調節可能な流路調整弁を夫々設け、各室内ユニットの
要求能力と供給能力との差に基づく各流量調整弁の指令
開度に制御する手段と、各室内ユニットの供給能力／要
求能力なる比としての能力比を各室内ユニットについて
演算する手段と、該演算された各室内ユニットの能力比
のうちの最大値と最小値との差が許容範囲を超えた場合
には最大の能力比を呈している室内ユニットの流量調整
弁の開度を絞る手段と、を備えたことを特徴とするもの
である。Means for Solving the Problems In order to achieve the above object, an air conditioner according to a first aspect of the present invention has an outdoor unit having a compressor and an outdoor heat exchanger, and has an indoor heat exchanger and is operated for heating. An air conditioner in which a plurality of indoor units are connected in parallel with each other and the installation position of the indoor unit has a height difference, and the indoor unit at a position where the resistance of the refrigerant flow path of the indoor unit at the high position is low. And an air conditioner that is larger than the resistance of the refrigerant flow path, each of the indoor units is provided with a flow path adjustment valve capable of adjusting the opening degree in the refrigerant flow path, and the required capacity and the supply capacity of each indoor unit are provided. Means for controlling the command opening of each flow control valve based on the difference, means for calculating the ratio of the supply capacity / required capacity of each indoor unit for each indoor unit, and means for calculating the calculated indoor unit. Means for reducing the opening of the flow control valve of the indoor unit exhibiting the maximum capacity ratio when the difference between the maximum value and the minimum value of the capacity ratios exceeds the allowable range. It is characterized by the following.
同じく、第２の本発明による空気調和機は、圧縮機お
よび室外熱交換器を有する室外ユニットに、室内熱交換
器を夫々有し暖房運転される室内ユニットを並列に複数
台接続してなる空気調和機において、前記各室内ユニッ
トの冷媒流路に開度調節可能な流量調整弁を夫々設け、
各室内ユニットの要求能力と供給能力との差に基づく各
流量調整弁の指令開度に制御する手段と、各室内ユニッ
トの供給能力／要求能力なる比としての能力比を各室内
ユニットについて演算する手段と、該演算された各室内
ユニットの能力比のうちの最大値と最小値との差が許容
範囲を超えた場合には最大の能力比を呈している室内ユ
ニットの流量調整弁の開度を絞る手段と、を備えたこと
を特徴とするものである。Similarly, the air conditioner according to the second aspect of the present invention is an air conditioner in which a plurality of indoor units each having an indoor heat exchanger and performing a heating operation are connected in parallel to an outdoor unit having a compressor and an outdoor heat exchanger. In the conditioner, each of the indoor units is provided with a flow control valve capable of adjusting the opening degree in the refrigerant flow path,
Means for controlling the command opening of each flow control valve based on the difference between the required capacity and the supply capacity of each indoor unit, and a capacity ratio as a ratio of supply capacity / required capacity of each indoor unit is calculated for each indoor unit. Means and the opening degree of the flow control valve of the indoor unit exhibiting the maximum capacity ratio when the difference between the maximum value and the minimum value of the calculated capacity ratios of the indoor units exceeds an allowable range. And means for narrowing down.
［作用］ 本発明の上記した特徴を有する構成によれば、第３図
のように室内ユニット間に高低差がある場合でも、自動
的に適切な流路抵抗を室内ユニットに与えるように流量
調整弁の開度が調整され、室内ユニットの設置位置の高
低差に伴う能力アンバランスを解消するように作用す
る。[Operation] According to the configuration having the above-described features of the present invention, even when there is a height difference between the indoor units as shown in FIG. 3, the flow rate is adjusted so that an appropriate flow path resistance is automatically given to the indoor units. The degree of opening of the valve is adjusted, and acts to eliminate the capacity imbalance due to the difference in elevation of the installation positions of the indoor units.
［実 施 例］ 本発明の実施例を説明するのに先立って、その先行例
を第１図、第２図により説明する。[Embodiment] Prior to describing an embodiment of the present invention, a preceding example will be described with reference to FIGS.
第１図に示す第１の先行例は、室内ユニットの取付位
置に高低差がある場合、第２図に示す第２の先行例は、
室内ユニットの取付位置が同一高さの場合であり、いず
れも暖房時を示している。The first prior example shown in FIG. 1 is based on the case where there is a height difference between the mounting positions of the indoor units, and the second prior example shown in FIG.
This is the case where the mounting positions of the indoor units are at the same height, and all show the time of heating.
室外ユニット１は、圧縮機11、室外熱交換器12、暖房
用膨張弁13および室外ファン14で構成され、室内ユニッ
ト２および３は、夫々、室内熱交換器21、31および室内
ファン22、32で構成され、第１図では室内ユニット２に
は絞り部材23が付加されている。室内ユニット２および
３は同じ容量である。室外ユニット１と室内ユニット２
および３とはガス配管４と液配管５で接合されている。
また、室内ユニット２および３は並列結合となってい
る。The outdoor unit 1 includes a compressor 11, an outdoor heat exchanger 12, a heating expansion valve 13, and an outdoor fan 14. The indoor units 2 and 3 respectively include an indoor heat exchanger 21, 31 and an indoor fan 22, 32. In FIG. 1, a throttle member 23 is added to the indoor unit 2. The indoor units 2 and 3 have the same capacity. Outdoor unit 1 and indoor unit 2
And 3 are joined by a gas pipe 4 and a liquid pipe 5.
The indoor units 2 and 3 are connected in parallel.
冷媒の流れについて説明する。圧縮機11から吐出され
た高温高圧の冷媒ガスは、ガス配管４を通って室内ユニ
ット２および３に送られ、室内熱交換器21および31でそ
れぞれの室内空気と熱交換されて液冷媒となる。このと
き、室内空気は暖められ、室内は暖房される。第１図の
場合、室内熱交換器21を出た液冷媒は絞り部材23を通っ
て室内ユニット２から出る。室内ユニット２および３か
ら出た液冷媒は液配管５を通り、室外ユニット１へ入
り、暖房用膨張弁13で減圧され、室外熱交換器12で室外
空気と熱交換され、低圧ガスとなって圧縮機11へ吸入さ
れ、圧縮機11で圧縮されて高温高圧の冷媒ガスとなって
再び吐出される。The flow of the refrigerant will be described. The high-temperature and high-pressure refrigerant gas discharged from the compressor 11 is sent to the indoor units 2 and 3 through the gas pipe 4 and exchanges heat with the indoor air in the indoor heat exchangers 21 and 31 to become a liquid refrigerant. . At this time, the room air is warmed and the room is heated. In the case of FIG. 1, the liquid refrigerant that has exited the indoor heat exchanger 21 passes through the throttle member 23 and exits the indoor unit 2. The liquid refrigerant flowing out of the indoor units 2 and 3 passes through the liquid pipe 5, enters the outdoor unit 1, is decompressed by the heating expansion valve 13, is heat-exchanged with the outdoor air by the outdoor heat exchanger 12, and becomes a low-pressure gas. The refrigerant is sucked into the compressor 11, compressed by the compressor 11, becomes a high-temperature and high-pressure refrigerant gas, and is discharged again.
１つの室内ユニットに流れる冷媒流量Ｇは、当該室内
ユニットの入口側圧力をP1、出口側圧力をP2、流路抵抗
をＲとすれば で表わされる。The refrigerant flow rate G flowing through one indoor unit is given by P 1 as the inlet pressure of the indoor unit, P 2 as the outlet pressure, and R as the flow path resistance. Is represented by
室内ユニット２と３の取付位置に高低差がない第２図
の場合には、入口側圧力P1および出口側圧力P2は室内ユ
ニット２と３とで違わないから、流路抵抗Ｒが等しけれ
ば、冷媒流量Ｇは室内ユニット２および３とも等しい。In the case of Figure 2 there is no height difference in the mounting position of the indoor unit 2 and 3, since the inlet-side pressure P 1 and the outlet pressure P 2 is not different in the indoor unit 2, 3 and the flow path resistance R is equal For example, the refrigerant flow rate G is equal to the indoor units 2 and 3.
しかし、第１図に示したように、室内ユニット２と室
内ユニット３の取付位置に高低差がある場合には、低い
位置にある室内ユニット３の冷媒出口側圧力は、高い位
置にある室内ユニット２の冷媒出口側圧力より液ヘッド
Ｈの分だけ高くなり、従って、室内ユニット３の方が室
内ユニット２に比較して入口側圧力P1と出口側圧力P2と
の差（P1−P2）が小さくなり、室内ユニット２に比べて
室内ユニット３の方が冷媒流量が減り、その分だけ室内
ユニット２の冷媒流量が増える（全体の冷媒流量は変ら
ないから）。そこで、室内ユニット２に絞り部材を付加
することによって、その流路抵抗Ｒを大きくし、これに
より室内ユニット２の冷媒流量を減らし、その分だけ室
内ユニット３へ流すことができ、両者の冷媒流量を等し
くできる。However, as shown in FIG. 1, when there is a difference in height between the mounting positions of the indoor unit 2 and the indoor unit 3, the refrigerant outlet side pressure of the indoor unit 3 at the lower position becomes higher than the indoor unit at the higher position. 2 is higher than the refrigerant outlet pressure by the liquid head H, so that the indoor unit 3 has a difference (P 1 −P) between the inlet pressure P 1 and the outlet pressure P 2 compared to the indoor unit 2. 2 ) is smaller, the refrigerant flow rate of the indoor unit 3 is smaller than that of the indoor unit 2, and the refrigerant flow rate of the indoor unit 2 is increased accordingly (because the overall refrigerant flow rate does not change). Therefore, by adding a throttle member to the indoor unit 2, the flow path resistance R thereof is increased, thereby reducing the flow rate of the refrigerant in the indoor unit 2 and allowing the refrigerant to flow to the indoor unit 3 by that much. Can be equal.
以上は、室内ユニット２および３が同じ容量の場合を
示したが、容量が違う場合は次のようにすればよい。The case where the indoor units 2 and 3 have the same capacity has been described above, but when the capacity is different, the following may be performed.
冷媒流量は室内ユニットの容量にほぼ比例して流すこ
とが必要であるから、したがって、室内ユニットへの冷
媒流量の分配は、単位容量当りの冷媒流量が等しくなる
ように、単位容量当りの流路抵抗で考えればよい。例え
ば、室内ユニット２が２馬力の容量で、室内ユニット３
が１馬力の容量であれば、室内ユニットの取付位置の高
さが等しい第２図の場合には、室内ユニット２の単位容
量当りの流路抵抗R2′は室内ユニット２の流路抵抗R2を
容量で割って となり、また、室内ユニット３のそれは となり、第２図では室内ユニット２および３の単位容量
当たりの夫々の流路抵抗R2′およびR3′をR2′＝R3′と
なるようにすれば、夫々の室内ユニットは夫々の容量に
合った能力を出すことができる。Since the flow rate of the refrigerant needs to flow almost in proportion to the capacity of the indoor unit, the distribution of the flow rate of the refrigerant to the indoor unit is performed in such a manner that the flow rate of the refrigerant per unit capacity is equal to the flow rate per unit capacity. Think in terms of resistance. For example, the indoor unit 2 has a capacity of 2 hp and the indoor unit 3
Is 1 horsepower, the flow path resistance R 2 ′ per unit capacity of the indoor unit 2 is equal to the flow path resistance R 2 of the indoor unit 2 in the case of FIG. Divide 2 by capacity And that of the indoor unit 3 is In FIG. 2, if the flow path resistances R 2 ′ and R 3 ′ per unit capacity of the indoor units 2 and 3 are set so that R 2 ′ = R 3 ′, the respective indoor units become We can give ability that matched capacity.
他方、これらの室内ユニット２および３を第１図のよ
うに高低差をつけて設置する場合は、高い方の室内ユニ
ット２の単位容量当たりの流路抵抗R2′が、低い方の室
内ユニット３の単位容量当たりの流路抵抗R1′より大き
くなるように絞り部材23を選定し、この絞り部材23を室
内ユニット２に付加すればよい。すなわち、第１図のよ
うに高い位置に設置された室内ユニット２の流路抵抗
が、第２図のようにそれぞれの室内ユニットが同一高さ
に設置された場合の室内ユニット２の流路抵抗より大き
くなるように室内ユニット２に絞り部材23を付加する。On the other hand, when these indoor units 2 and 3 are installed with a difference in height as shown in FIG. 1, the flow resistance R 2 ′ per unit capacity of the higher indoor unit 2 is lower than that of the lower indoor unit. The throttle member 23 may be selected so as to be larger than the flow path resistance R 1 'per unit capacity of 3, and the throttle member 23 may be added to the indoor unit 2. That is, the flow path resistance of the indoor unit 2 installed at a high position as shown in FIG. 1 is the flow path resistance of the indoor unit 2 when each indoor unit is installed at the same height as shown in FIG. A throttle member 23 is added to the indoor unit 2 so as to be larger.
以上に説明した第１および第２の先行例を踏まえて、
本発明の第１実施例を第３図ないし第５図で説明する。
第３図は第１図の室内ユニット２および３に、夫々、開
度調整可能な流量調整弁24および34を付加し、第１図の
室内ユニット２にあった絞り部材23を除去したものであ
る。第４図は流量調整弁24および34の開度調整手段を示
したもので、開度指令部25および35には指令開度ａと修
正量ｂが入力され、これらの入力値から開度指令部25お
よび35は修正指令開度ａ′（＝ａ−ｂ）を演算し、流量
調整弁24および34へ出力する。流量調整弁24および34は
それを受けて修正指令開度ａ′となるように開度が調節
される。修正量ｂはディップスイッチ26および36で与え
られる。第３図の場合は、高い位置にある室内ユニット
２の弁24の開度が、低い位置にある室内ユニット３の弁
34の開度より小さくなるように、言いかえれば、流路抵
抗が大きくなるように、ディップスイッチ26および36に
修正量をセットし、以て、室内ユニット２および３の冷
媒流量が等しくなるようにできる。第５図は流量調整弁
24、34に対する上記の開度修正の説明図である。Based on the first and second prior examples described above,
A first embodiment of the present invention will be described with reference to FIGS.
FIG. 3 shows the indoor units 2 and 3 of FIG. 1 with flow control valves 24 and 34, respectively, whose opening can be adjusted, and the throttle member 23 of the indoor unit 2 of FIG. 1 removed. is there. FIG. 4 shows the means for adjusting the opening of the flow regulating valves 24 and 34. A command opening a and a correction amount b are inputted to the opening command units 25 and 35, and the opening command is obtained from these input values. The units 25 and 35 calculate the corrected command opening a '(= ab) and output it to the flow regulating valves 24 and 34. In response thereto, the flow control valves 24 and 34 are adjusted in opening so as to have the corrected command opening a '. The correction amount b is given by the dip switches 26 and 36. In the case of FIG. 3, the opening degree of the valve 24 of the indoor unit 2 at the high position is equal to the valve opening of the indoor unit 3 at the low position.
A correction amount is set to the dip switches 26 and 36 so as to be smaller than the opening degree of 34, in other words, so as to increase the flow path resistance, so that the refrigerant flow rates of the indoor units 2 and 3 are equalized. Can be. Fig. 5 shows a flow control valve
It is explanatory drawing of said opening degree correction with respect to 24,34.
次に、本発明の第２実施例を第６図を参照して説明す
る。第６図は第３図のように、室内ユニット間に高低差
がある場合、夫々の室内ユニットに設けた冷媒流量調整
弁に自動的に適切な弁開度を与える制御の流れ図を示し
たものである。室内ユニットはｎ台あるとする。室内ユ
ニットｉの要求能力（例えば設定温度と室温との差に比
例する値）と供給能力（例えば吹出空気温度と室温との
差に比例する値）との差ΔQiを当該室内ユニットｉの能
力偏差とし、この能力偏差ΔQiを用いて室内ユニットｉ
の流量調整弁の指令開度aiを算出する（ｉ＝1,2,…,
n）。この演算には例えばPID演算を用いる。そして、こ
の指令開度aiになるように室内ユニットｉの流量調整弁
の開度を制御する。この制御によって、各室内ユニット
ｉは要求能力に比例した供給能力が出せるが、流量調整
弁開度が最大開度であって、かつ、さらに開度を大きく
する指令を受けた室内ユニットがある場合、その室内ユ
ニットは能力が不足する。そこで、以下の制御を行う。Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 6 shows a flow chart of control for automatically giving an appropriate valve opening to the refrigerant flow control valve provided in each indoor unit when there is a height difference between the indoor units as shown in FIG. It is. It is assumed that there are n indoor units. The difference ΔQi between the required capacity of the indoor unit i (for example, a value proportional to the difference between the set temperature and the room temperature) and the supply capacity (for example, a value proportional to the difference between the blown air temperature and the room temperature) is calculated as the capability deviation of the indoor unit i. And the indoor unit i is calculated using the capacity deviation ΔQi.
The command opening ai of the flow control valve is calculated (i = 1,2, ...,
n). For this calculation, for example, a PID calculation is used. Then, the opening of the flow control valve of the indoor unit i is controlled so as to achieve the command opening ai. By this control, each indoor unit i can provide a supply capacity in proportion to the required capacity, but when the flow control valve opening is the maximum opening and there is an indoor unit that has received a command to further increase the opening. , The indoor unit lacks capacity. Therefore, the following control is performed.
各室内ユニットｉの供給能力と要求能力との比（これ
を能力比と称する）Qiを演算し、その最大値Qimax（す
なわち、Q1,Q2…Qnのうちの最大のもの）および該Qimax
を呈している室内ユニット番号imax,ならびに能力比Qi
の最小値Qimin（すなわちQ1,Q2…Qnのうちの最小のも
の）および該Qiminを呈している室内ユニット番号imin
を検出する。The ratio of the supply capacity and the required capacity of the indoor unit i (which is referred to as capacity ratio) is calculated to Q i, the maximum value Q imax (i.e., Q 1, Q 2 ... as the largest of the Q n) And the Q imax
Indoor unit and has a number i max, and the ability ratio Q i
The minimum value Q imin (i.e. Q 1, Q 2 ... smallest ones of Q n) and the indoor unit and has a said Q imin number i min of
Is detected.
次に、最大値Qimaxと最小値Qiminの差がδ（冷媒流量
配分のアンバランスの許容差）を越え、かつ、室内ユニ
ットiminの流量調整弁開度が最大開度のとき、室内ユニ
ットimaxの流量調整弁を絞る。これにより、流量調整弁
開度が最大で且つ能力が不足している室内ユニットの冷
媒流量が、他の室内ユニットの流量調整弁を絞ることに
よって、増加し、当該室内ユニットの能力不足が解消す
る。本実施例によれば、第３図のように室内ユニット間
に高低差がある場合でも、自動的に適切な流路抵抗を室
内ユニットに与えるように流量調整弁の開度が調整さ
れ、室内ユニットの設置位置の高低差に伴う能力アンバ
ランスを解消することができる。Next, when the difference between the maximum value Q imax and the minimum value Q imin exceeds δ (allowable difference in imbalance of refrigerant flow distribution) and the opening of the flow control valve of the indoor unit i min is the maximum opening, Squeeze the flow control valve in unit i max . Thereby, the refrigerant flow rate of the indoor unit having the maximum opening degree of the flow control valve and the insufficient capacity is increased by restricting the flow control valves of the other indoor units, and the insufficient capacity of the indoor unit is resolved. . According to the present embodiment, even when there is a height difference between the indoor units as shown in FIG. 3, the opening degree of the flow control valve is adjusted so as to automatically provide an appropriate flow path resistance to the indoor unit. It is possible to eliminate the capacity imbalance due to the difference in the height of the installation positions of the units.
［発明の効果］ 本発明によれば、暖房時、室内ユニットの設置位置間
に高低差がある場合でも、冷媒流量を適切に調整できる
ので、各室内ユニットの能力アンバランスが解消される
効果がある。[Effects of the Invention] According to the present invention, during heating, even if there is a height difference between the installation positions of the indoor units, the flow rate of the refrigerant can be appropriately adjusted. is there.
第１図は本発明の一実施例の冷凍サイクルの構成と配置
を示す図、第２図は第１図と比較して室内ユニットが同
一高さにある場合の図、第３図は本発明の他の実施例の
冷凍サイクルの構成と配置を示す図、第４図は第３図の
流量調整弁の制御方法を示す構成図、第５図はその弁開
度修正動作の説明図、第６図は本発明のさらに他の実施
例の流量調整弁の制御方法を示す流れ図である。 １……室外ユニット、2,3……室内ユニット ４……ガス配管、５……液配管 11……圧縮機、12……室外熱交換器 21,31……室内熱交換器 23……絞り部材、24,34……流量調整弁 25,35……開度指令部 26,36……ディップスイッチFIG. 1 is a diagram showing the configuration and arrangement of a refrigeration cycle according to one embodiment of the present invention, FIG. 2 is a diagram showing a case where indoor units are at the same height as compared with FIG. 1, and FIG. FIG. 4 is a diagram showing a configuration and an arrangement of a refrigeration cycle of another embodiment, FIG. 4 is a diagram showing a control method of a flow regulating valve in FIG. 3, FIG. FIG. 6 is a flowchart showing a method of controlling a flow control valve according to still another embodiment of the present invention. 1 ... outdoor unit, 2, 3 ... indoor unit 4 ... gas piping, 5 ... liquid piping 11 ... compressor, 12 ... outdoor heat exchanger 21, 31 ... indoor heat exchanger 23 ... throttle Member, 24,34… Flow control valve 25,35 …… Open position command part 26,36 …… Dip switch
───────────────────────────────────────────────────── フロントページの続き (72)発明者 浦田 和幹 茨城県土浦市神立町502番地 株式会社 日立製作所機械研究所内 (72)発明者 戸草 健治 静岡県清水市村松390番地 株式会社日 立製作所清水工場内 (72)発明者 南方 留美 茨城県土浦市神立町502番地 株式会社 日立製作所機械研究所内 (72)発明者 日比野 陽三 茨城県土浦市神立町502番地 株式会社 日立製作所機械研究所内 (56)参考文献 実開 昭52−130156（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuki Urata 502 Kandachicho, Tsuchiura-shi, Ibaraki Machinery Research Laboratory, Hitachi, Ltd. (72) Inventor Kenji Togusa 390 Muramatsu, Shimizu-shi, Shizuoka Prefecture Hitachi, Ltd. Inside the Shimizu Plant (72) Inventor Rumi Minamikata 502 Kandate-cho, Tsuchiura-shi, Ibaraki Pref.Hitachi, Ltd.Mechanical Research Laboratory Co., Ltd. References Japanese Utility Model Showa 52-130156 (JP, U)
Claims (2)
ニットに、室内熱交換器を夫々有し暖房運転される室内
ユニットを並列に複数台接続してなり、前記室内ユニッ
トの設置位置に高低差がある空気調和機であって、高い
位置にある室内ユニットの冷媒流路の抵抗を低い位置に
ある室内ユニットの冷媒流路の抵抗よりも大きくしてな
る空気調和機において、 前記各室内ユニットの冷媒流路に開度調節可能な流量調
整弁を夫々設け、それら流量調整弁に、各室内ユニット
毎の指令開度を夫々の室内ユニットの設置位置の高低差
に応じた修正量で補正した修正開度をとらせる様にする
弁開度調整手段を備えたことを特徴とする空気調和機。An outdoor unit having a compressor and an outdoor heat exchanger is connected in parallel with a plurality of indoor units each having an indoor heat exchanger and operated for heating. An air conditioner having a difference, wherein the resistance of the refrigerant flow path of the indoor unit at a higher position is greater than the resistance of the refrigerant flow path of the indoor unit at a lower position. Each of the refrigerant flow paths is provided with a flow control valve capable of adjusting the opening degree, and the command opening degree of each indoor unit is corrected to the flow control valve by a correction amount according to a height difference of an installation position of each indoor unit. An air conditioner comprising a valve opening adjusting means for obtaining a corrected opening.
ニットに、室内熱交換器を夫々有し暖房運転される室内
ユニットを並列に複数台接続してなる空気調和機におい
て、 前記各室内ユニットの冷媒流路に開度調節可能な流量調
整弁を夫々設け、各室内ユニットの要求能力と供給能力
との差に基づく各流量調整弁の指令開度に制御する手段
と、各室内ユニットの供給能力／要求能力なる比として
の能力比を各室内ユニットについて演算する手段と、該
演算された各室内ユニットの能力比のうちの最大値と最
小値との差が許容範囲を超えた場合には最大の能力比を
呈している室内ユニットの流量調整弁の開度を絞る手段
と、を備えたことを特徴とする空気調和機。2. An air conditioner in which a plurality of indoor units each having an indoor heat exchanger and being operated for heating are connected in parallel to an outdoor unit having a compressor and an outdoor heat exchanger. Means for controlling the command opening of each flow control valve based on the difference between the required capacity and the supply capacity of each indoor unit, and the supply of each indoor unit. Means for calculating a capacity ratio as a ratio of capacity / required capacity for each indoor unit, and when a difference between a maximum value and a minimum value of the calculated capacity ratio of each indoor unit exceeds an allowable range. Means for narrowing the opening of the flow control valve of the indoor unit exhibiting the maximum capacity ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9422390A JP2810763B2 (en) | 1990-04-10 | 1990-04-10 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9422390A JP2810763B2 (en) | 1990-04-10 | 1990-04-10 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03294752A JPH03294752A (en) | 1991-12-25 |
| JP2810763B2 true JP2810763B2 (en) | 1998-10-15 |
Family
ID=14104318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9422390A Expired - Fee Related JP2810763B2 (en) | 1990-04-10 | 1990-04-10 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2810763B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010261715A (en) * | 2010-08-27 | 2010-11-18 | Mitsubishi Electric Corp | Air conditioning device |
-
1990
- 1990-04-10 JP JP9422390A patent/JP2810763B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010261715A (en) * | 2010-08-27 | 2010-11-18 | Mitsubishi Electric Corp | Air conditioning device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03294752A (en) | 1991-12-25 |
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