JP2967793B2 - Multi-type air conditioner - Google Patents
Multi-type air conditionerInfo
- Publication number
- JP2967793B2 JP2967793B2 JP35876491A JP35876491A JP2967793B2 JP 2967793 B2 JP2967793 B2 JP 2967793B2 JP 35876491 A JP35876491 A JP 35876491A JP 35876491 A JP35876491 A JP 35876491A JP 2967793 B2 JP2967793 B2 JP 2967793B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- cooling
- expansion valve
- outdoor unit
- heating
- 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.)
- Expired - Fee Related
Links
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は各種ビルや集合住宅等に
使用するマルチ式冷暖房装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-type air conditioner for use in various buildings and condominiums.
【０００２】[0002]
【従来の技術】圧縮機と冷暖房切換弁と室外熱交換器と
膨張弁を構成要素とする室外機に、膨張弁と室内熱交換
器を構成要素とする多数の室内機を接続して構成するマ
ルチ式冷暖房装置に於いて、圧縮機を駆動する電動機を
インバータで回転数制御することにより室内側の負荷の
変動に対応することが行われている。圧縮機の回転数制
御範囲はインバータや電動機の特性から決まり、例えば
４極電動機を使用する場合、周波数制御範囲を例えば25
〜150Hzとすると回転数制御範囲は750〜4500rpmであ
る。従って室外機は、圧縮機の、この最低回転数750rpm
に対応する容量以下には制御できない。2. Description of the Related Art A large number of indoor units including an expansion valve and an indoor heat exchanger are connected to an outdoor unit including a compressor, a cooling / heating switching valve, an outdoor heat exchanger, and an expansion valve. 2. Description of the Related Art In a multi-type air conditioner, the rotation speed of an electric motor that drives a compressor is controlled by an inverter to cope with a change in indoor load. The rotation speed control range of the compressor is determined by the characteristics of the inverter and the motor. For example, when a four-pole motor is used, the frequency control range is set to 25
If it is set to 150 Hz, the rotation speed control range is 750-4500 rpm. Therefore, the minimum rotation speed of the outdoor unit is 750 rpm
Cannot be controlled below the capacity corresponding to.
【０００３】また従来、前記マルチ式冷暖房装置に於い
て、圧縮機は室内機の合計容量分の容量を有するものを
設置している。[0003] Conventionally, in the multi-type air conditioner, a compressor having a capacity corresponding to the total capacity of the indoor units is installed.
【０００４】[0004]
【発明が解決しようとする課題】上述したように圧縮機
の回転数により制御し得る室外機の最小容量は限られて
いるので、夫々の室内機の最小容量は、この室外機の最
小容量以下とすることができず、容量の大きい機種の室
内機を設置しなければならない。例えば室外機の容量を
Ｑとし、１対６の範囲で容量制御を行うものとすると、
室外機の最小容量はＱmin＝0.166Ｑとなり、室内機の最
小容量はこのＱminを下回ることはできない。As described above, since the minimum capacity of the outdoor unit that can be controlled by the rotation speed of the compressor is limited, the minimum capacity of each indoor unit is equal to or less than the minimum capacity of the outdoor unit. Therefore, it is necessary to install a large-capacity indoor unit. For example, if the capacity of the outdoor unit is Q and the capacity is controlled in a range of 1: 6,
The minimum capacity of the outdoor unit is Qmin = 0.166Q, and the minimum capacity of the indoor unit cannot be lower than this Qmin.
【０００５】また一般的にマルチ式冷暖房装置に於いて
は、全ての室内機が同時に運転され、即ち全負荷で運転
される時間帯は一般的に短く、常時は部分負荷運転にな
る場合が普通であるため、室内機の合計容量分の容量を
有する圧縮機を設置するのは設備費が過大になり、不経
済である。とはいっても上記合計容量分以下の容量の圧
縮機では全負荷運転に対応できない。本発明はこれらの
課題を解決することを目的とするものである。In general, in a multi-type air conditioner, all the indoor units are operated at the same time, that is, the time period in which all the indoor units are operated at full load is generally short, and the partial load operation is usually performed. Therefore, it is uneconomical to install a compressor having a capacity corresponding to the total capacity of the indoor units because the facility cost becomes excessive. However, a compressor having a capacity equal to or less than the total capacity cannot support full-load operation. An object of the present invention is to solve these problems.
【０００６】[0006]
【課題を解決するための手段】上述した課題を解決する
ために、本発明では、まず回転数制御する圧縮機と冷暖
房切換弁と室外熱交換器と膨張弁を構成要素とする室外
機に、膨張弁と室内熱交換器を構成要素とする多数の室
内機を接続して成るマルチ式冷暖房装置に於いて、前記
室外機に、膨張弁と放熱用熱交換器を構成要素とする、
冷房運転及び暖房運転に於いて動作可能な放熱系統を接
続し、この放熱系統の放熱容量は、前記室外機の最小容
量に対応して設定したマルチ式冷暖房装置を提案する。In order to solve the above-mentioned problems, the present invention first provides an outdoor unit having a compressor for controlling the rotational speed, a cooling / heating switching valve, an outdoor heat exchanger, and an expansion valve as components. In a multi-type cooling / heating apparatus configured by connecting a number of indoor units each including an expansion valve and an indoor heat exchanger as components, the outdoor unit includes an expansion valve and a heat exchanger for heat radiation as components .
The present invention proposes a multi-type cooling / heating apparatus in which a radiating system operable in a cooling operation and a heating operation is connected, and a radiating capacity of the radiating system is set according to a minimum capacity of the outdoor unit.
【０００７】また本発明では、回転数制御する圧縮機と
冷暖房切換弁と室外熱交換器と膨張弁を構成要素とする
室外機に、膨張弁と室内熱交換器を構成要素とする多数
の室内機を接続して成るマルチ式冷暖房装置に於いて、
前記室外機に、膨張弁と放熱用熱交換器を構成要素とす
る、冷房運転及び暖房運転に於いて動作可能な放熱系統
を接続すると共に、膨張弁と蓄熱器と、この蓄熱器を通
る冷媒熱交換経路を構成要素とする蓄熱系統を接続し、
前記放熱系統の放熱容量は、前記室外機の最小容量に対
応して設定したマルチ式冷暖房装置を提案する。According to the present invention, there are provided an outdoor unit having a compressor for controlling the rotational speed, a cooling / heating switching valve, an outdoor heat exchanger and an expansion valve as components, and a plurality of indoor units having an expansion valve and an indoor heat exchanger as components. In the multi-type air-conditioning system consisting of connecting machines,
The outdoor unit is connected to a radiating system operable in a cooling operation and a heating operation, which includes an expansion valve and a heat radiation heat exchanger as constituent elements, and further includes an expansion valve, a regenerator, and a refrigerant passing through the regenerator. Connect the heat storage system with the heat exchange path as a component,
A multi-type air conditioner is proposed in which the heat radiation capacity of the heat radiation system is set in accordance with the minimum capacity of the outdoor unit.
【０００８】[0008]
【作用】上述した請求項１及び２の冷暖房装置に於いて
は、圧縮機を最低回転数で駆動して、室外機を最小容量
で運転している際に発生する熱（冷熱を含む）量は、冷
房運転及び暖房運転のいずれにおいても全て放熱系統で
放散することが可能である。従って極端にいうと、この
運転状態では室内機の負荷は０または極小とすることが
できる。そして室内機の負荷が前記最小容量に至るまで
は、それとの差の熱量、即ち余剰熱量を放散することに
より正常な冷暖房運転が行える。また室内機の負荷が前
記最低流量を越えた場合には放熱系統の動作を停止する
ことにより、通常の冷暖房装置と同様な冷暖房運転を行
うことができる。In the cooling and heating apparatus according to the first and second aspects, the amount of heat (including cooling) generated when the compressor is driven at the minimum rotational speed and the outdoor unit is operated at the minimum capacity. Is cold
It is possible to dissipate all the heat by the heat dissipation system in both the cell operation and the heating operation . Accordingly, in an extreme case, the load on the indoor unit can be set to zero or minimal in this operating state. Until the load of the indoor unit reaches the minimum capacity, a normal cooling and heating operation can be performed by dissipating the difference in heat amount, that is, the surplus heat amount. When the load of the indoor unit exceeds the minimum flow rate, the operation of the heat radiating system is stopped, so that the same cooling and heating operation as in a normal cooling and heating device can be performed.
【０００９】請求項２の冷暖房装置では、前記余剰熱量
を蓄熱系統に蓄熱することによって正常な冷暖房運転が
行われ、この蓄熱系統に蓄熱した熱量を必要に応じて冷
媒熱交換経路を介して室内機に利用することができると
共に、蓄熱系統に最大限に蓄熱が行われている状態に於
いても、放熱系統を介して余剰熱量を放散することによ
り正常な冷暖房運転が行われる。 [0009] In air conditioning apparatus according to claim 2, wherein the normal cooling and heating operations by storing heat surplus heat in the heat storage system is performed, the room via the refrigerant heat exchanging path in accordance with the amount of heat that is accumulated in the heat storage system required and it can be used on the machine
In both cases, when the heat storage system is maximally storing heat,
However, by dissipating excess heat through the heat dissipation system,
Normal cooling and heating operation is performed.
【００１０】[0010]
【実施例】次に本発明の実施例を図について説明する。
まず図１は請求項１の発明に対応する実施例を表した系
統説明図である。この図に於いて、符号１は圧縮機、２
はこの圧縮機１を駆動する電動機であり、この電動機２
は図示を省略しているインバータにより回転数制御をす
る構成である。圧縮機１はエンジンで駆動する構成とす
ることもできる。そして符号３は四方弁により構成した
冷暖房切換弁、４は室外熱交換器、５は膨張弁であり、
これらの構成要素により室外機６を構成している。これ
らは通常の冷暖房装置の室外機の構成要素と同様であ
る。Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a system explanatory diagram showing an embodiment corresponding to the first aspect of the present invention. In this figure, reference numeral 1 denotes a compressor, 2
Is an electric motor for driving the compressor 1;
Is a configuration in which the rotation speed is controlled by an inverter not shown. The compressor 1 may be configured to be driven by an engine. Reference numeral 3 denotes a cooling / heating switching valve constituted by a four-way valve, 4 denotes an outdoor heat exchanger, 5 denotes an expansion valve,
These components constitute the outdoor unit 6. These are the same as the components of the outdoor unit of a normal cooling / heating device.
【００１１】符号７は膨張弁８と放熱用熱交換器９を構
成要素とする放熱系統であり、この放熱系統７は、その
膨張弁８側、放熱用熱交換器９側を、夫々前記室外機６
の液管１０ａ、ガス管１０ｂに接続している。そしてこ
の放熱系統７の放熱容量は、前記電動機２またはエンジ
ンを最低回転数で駆動している状態に於いて前記室外機
６の構成要素により発生する熱量、即ち室外機６の最小
容量と等しいか、あるいはそれよりも若干大きく設定し
ている。Reference numeral 7 denotes a heat radiating system having an expansion valve 8 and a heat radiating heat exchanger 9 as constituent elements. The heat radiating system 7 connects the expansion valve 8 side and the heat radiating heat exchanger 9 side to the outdoor unit, respectively. Machine 6
Liquid pipe 10a and gas pipe 10b. The heat radiation capacity of the heat radiation system 7 is equal to the amount of heat generated by the components of the outdoor unit 6 when the electric motor 2 or the engine is driven at the minimum rotation speed, that is, the minimum capacity of the outdoor unit 6. , Or slightly larger.
【００１２】符号１１（１１ａ，１１ｂ，１１ｃ，…
…）は膨張弁１２と室内熱交換器１３を構成要素とする
複数の室内機であり、これらの室内機１１は前記放熱系
統７と同様に、その膨張弁１２側、室内熱交換器１３側
を、夫々前記液管１０ａ、ガス管１０ｂに接続してい
る。Reference numeral 11 (11a, 11b, 11c,...)
..) Are a plurality of indoor units having the expansion valve 12 and the indoor heat exchanger 13 as constituent elements. These indoor units 11 are, like the heat radiation system 7, the expansion valve 12 side and the indoor heat exchanger 13 side. Are connected to the liquid pipe 10a and the gas pipe 10b, respectively.
【００１３】以上の膨張弁５、８、１２は、冷媒の膨張
作用、流量制御作用並びに閉路作用を選択実行可能な電
子膨張弁により構成している。また夫々の熱交換器４、
９、１３にはファン１４を設けている。Each of the expansion valves 5, 8, and 12 is constituted by an electronic expansion valve capable of selectively executing a refrigerant expansion operation, a flow control operation, and a closing operation. In addition, each heat exchanger 4,
9 and 13 are provided with a fan 14.
【００１４】以上の構成に於いて、冷暖房切換弁３を図
中実線で示すように切り換えると共に、膨張弁５は冷媒
の流量制御作用、膨張弁１２は冷媒の膨張作用を行わせ
るように制御して運転を行うと、圧縮機１で圧縮された
冷媒は図中実線で示すように室外機６と夫々の室内機１
１を循環して冷房運転が行われる。In the above arrangement, the cooling / heating switching valve 3 is switched as shown by a solid line in the figure, the expansion valve 5 is controlled to perform the refrigerant flow control operation, and the expansion valve 12 is controlled to perform the refrigerant expansion operation. During operation, the refrigerant compressed by the compressor 1 is supplied to the outdoor unit 6 and the respective indoor units 1 as indicated by solid lines in the figure.
1 and the cooling operation is performed.
【００１５】かかる冷房運転に於いて室内機１１の負荷
が前記最小容量よりも高い場合には膨張弁８は閉路作用
を行わせて放熱系統７への冷媒の流入を防止する。また
負荷が最小容量よりも低い場合には余剰の熱量（冷熱）
が発生するので、膨張弁８は冷媒の膨張作用を行わせる
ように制御して冷媒の一部を放熱系統７に流し、前記最
小容量から負荷を減じた熱量を放熱用熱交換器９を介し
て放散する。尚、冷房運転に於いて、このように放散す
る熱量は、いわゆる冷熱の量であり、実際上は冷媒は放
熱用熱交換器９に於いて外気の温度により加熱されて、
過度の冷却が防止されることになる。In such a cooling operation, when the load on the indoor unit 11 is higher than the minimum capacity, the expansion valve 8 performs a closing action to prevent the refrigerant from flowing into the heat radiation system 7. If the load is lower than the minimum capacity, the excess heat (cold heat)
Is generated, the expansion valve 8 controls the expansion of the refrigerant, and a part of the refrigerant flows to the heat radiation system 7, and the amount of heat obtained by subtracting the load from the minimum capacity is passed through the heat radiation heat exchanger 9. To dissipate. In the cooling operation, the amount of heat dissipated in this way is a so-called amount of cold heat. In practice, the refrigerant is heated by the temperature of the outside air in the heat exchanger 9 for heat radiation.
Excessive cooling will be prevented.
【００１６】次に、冷暖房切換弁３を図中点線で示すよ
うに切り換えると共に、膨張弁５は冷媒の膨張作用、膨
張弁１２は冷媒の流量制御作用を行わせるように制御し
て運転を行うと、圧縮機１で圧縮された冷媒は図中点線
で示すように室外機６と夫々の室内機１１を循環して暖
房運転が行われる。Next, the cooling / heating switching valve 3 is switched as shown by a dotted line in the figure, and the expansion valve 5 is operated to control the refrigerant expansion, and the expansion valve 12 is controlled to perform the refrigerant flow control operation. Then, the refrigerant compressed by the compressor 1 circulates through the outdoor unit 6 and the respective indoor units 11 as shown by the dotted line in the figure, and the heating operation is performed.
【００１７】以上の暖房運転に於いて、室内機１１の負
荷が前記最小容量よりも高い場合には膨張弁８は閉路作
用を行わせて放熱系統７への冷媒の流入を防止し、また
負荷が最小容量よりも低い場合には、上述と同様に冷媒
の一部を放熱系統７に流して放熱用熱交換器９を介して
放熱する。In the above heating operation, when the load of the indoor unit 11 is higher than the minimum capacity, the expansion valve 8 performs a closing action to prevent the refrigerant from flowing into the heat radiation system 7 and to reduce the load. Is smaller than the minimum capacity, a part of the refrigerant flows to the heat radiating system 7 and radiates heat through the heat radiating heat exchanger 9 as described above.
【００１８】以上の冷暖房運転に於いて、放熱系統７は
室外機６の最小容量の熱量まで放散することができるの
で、極端にいうと、室内機１１は無負荷とすることがで
き、従って室内機１１の負荷範囲は、圧縮機１の回転数
制御範囲の全てに対応する範囲となり、室外機６の最大
容量の0〜100％の制御が可能となる。In the above-mentioned cooling and heating operation, the heat radiating system 7 can dissipate the heat of the minimum capacity of the outdoor unit 6, so that, in an extreme case, the indoor unit 11 can be set to no load, so The load range of the unit 11 is a range corresponding to the entire rotation speed control range of the compressor 1, and control of 0 to 100% of the maximum capacity of the outdoor unit 6 is possible.
【００１９】図２は一シーズンの冷暖房運転時間に対し
ての室内機１１の負荷曲線を示すもので、図中点線は、
上述したように室外機６の容量制御を１対６の範囲で行
うものとした場合に於ける最小容量を示すものである。
上述した本発明に於いては、この図中、室内機１１の負
荷が点線よりも低い範囲（図中右下の斜線部分）が放熱
系統７を介して放散される熱量に対応するのであるが、
図からわかるように、放散される熱量は全体の熱量と比
較して非常に小さい割合であり、無視できる量であるこ
とがわかる。FIG. 2 shows a load curve of the indoor unit 11 with respect to the cooling / heating operation time in one season.
As described above, the figure shows the minimum capacity when the capacity control of the outdoor unit 6 is performed in the range of 1: 6.
In the present invention described above, in this figure, the range in which the load on the indoor unit 11 is lower than the dotted line (the shaded area at the lower right in the figure) corresponds to the amount of heat dissipated through the heat radiation system 7. ,
As can be seen from the figure, the amount of heat dissipated is a very small percentage compared to the total amount of heat, indicating that it is negligible.
【００２０】次に、図３は請求項２の発明に対応する実
施例を表した系統説明図であり、図１の構成要素と同様
の構成要素には同一の符号を付し、その説明は省略す
る。図からわかるように、この図３の構成は図１の構成
要素に加え、前記室外機６に膨張弁１５と蓄熱器１６
と、この蓄熱器１６を通る冷媒熱交換経路１７を構成要
素とする蓄熱系統１８を接続したものである。この蓄熱
系統１８の膨張弁１５側、蓄熱器１６側は夫々液管１０
ａ、ガス管１０ｂに接続すると共に、冷媒熱交換経路１
７は蓄熱器１６を通る熱交換部１９の両端側に夫々液管
１０ａ、ガス管１０ｂに至る経路２０ａ、２０ｂ；２１
ａ、２１ｂを設け、これらの経路２０ａ、２０ｂ；２１
ａ、２１ｂの夫々に開閉弁２２ａ、２２ｂを設けたもの
である。またこれらの経路２０ａ、２１ａ；２０ｂ、２
１ｂ間の夫々液管１０ａ、ガス管１０ｂに開閉弁２３
ａ、２３ｂを設けている。Next, FIG. 3 is a system explanatory diagram showing an embodiment corresponding to the second aspect of the present invention. The same reference numerals are given to the same components as those in FIG. Omitted. As can be seen from the drawing, the configuration in FIG. 3 is the same as the components in FIG.
And a heat storage system 18 having a refrigerant heat exchange path 17 passing through the heat storage unit 16 as a component. The expansion valve 15 side and the heat storage 16 side of the heat storage system 18 are respectively connected to the liquid pipe 10.
a, connected to the gas pipe 10b and the refrigerant heat exchange path 1
7 are paths 20a, 20b; 21 to the liquid pipe 10a and the gas pipe 10b at both ends of the heat exchange section 19 passing through the regenerator 16, respectively.
a, 21b, and these paths 20a, 20b;
On and off valves 22a and 22b are provided for a and 21b, respectively. These routes 20a, 21a; 20b, 2
The on-off valve 23 is connected to the liquid pipe 10a and the gas pipe 10b between
a and 23b are provided.
【００２１】かかる構成に於いては冷暖房運転に際して
室内機１３の負荷が低く、前記余剰熱量が発生する場合
には、蓄熱器１６に最大限の蓄熱が行われていないこと
を条件として、膨張弁８は閉路作用を行わせると共に膨
張弁１５は冷媒の膨張作用または流量制御作用を行わせ
て冷媒の一部を蓄熱系統１８に流すことにより、余剰熱
量を蓄熱することができる。そして負荷が室外機６の最
小容量まで上昇したら膨張弁１５は閉として蓄熱系統１
８への冷媒の流入を停止する。そして負荷が更に上昇し
て所定の値を越えた場合には、冷媒熱交換経路１７を動
作させることにより、蓄熱した熱量を冷媒に与えて室内
機１３に於いて利用することができる。即ち、冷房運転
時に於いては、経路２０ａ、２１ａの開閉弁２２ａを
開、経路２０ｂ、２１ｂの開閉弁２２ｂを閉とすると共
に、開閉弁２３ａを開、開閉弁２３ｂを閉とすると、膨
張弁５の下流側の冷媒は、経路２０ａ、熱交換部１９、
経路２１ａを経て流れる。従って冷媒は熱交換部１９に
於いて過冷却されて室内機１３に供給される。また暖房
運転時に於いては、上述と逆に経路２０ａ、２１ａの開
閉弁２２ａを閉、経路２０ｂ、２１ｂの開閉弁２２ｂを
開とすると共に、開閉弁２３ａを閉、開閉弁２３ｂを開
とすると、冷暖房切換弁３の下流側の冷媒は、経路２０
ｂ、熱交換部１９、経路２０ａを経て流れる。従って冷
媒は熱交換部１９に於いて加熱されて更に高温となって
室内機１３に供給される。In this configuration, when the load on the indoor unit 13 is low during the cooling / heating operation and the surplus heat is generated, the expansion valve is provided on condition that the maximum heat is not stored in the regenerator 16. Reference numeral 8 denotes a closing operation, and the expansion valve 15 performs a refrigerant expansion operation or a flow rate control operation to allow a part of the refrigerant to flow to the heat storage system 18 so that the excess heat can be stored. When the load rises to the minimum capacity of the outdoor unit 6, the expansion valve 15 is closed and the heat storage system 1 is closed.
The flow of the refrigerant into 8 is stopped. When the load further rises and exceeds a predetermined value, the refrigerant heat exchange path 17 is operated to supply the stored heat to the refrigerant and use it in the indoor unit 13. That is, during the cooling operation, the on-off valve 22a of the paths 20a and 21a is opened, the on-off valve 22b of the paths 20b and 21b is closed, and the on-off valve 23a is opened and the on-off valve 23b is closed. 5, the refrigerant on the downstream side passes through the path 20a, the heat exchange section 19,
It flows via path 21a. Therefore, the refrigerant is supercooled in the heat exchange section 19 and supplied to the indoor unit 13. In the heating operation, the on / off valves 22a of the paths 20a and 21a are closed, the on / off valves 22b of the paths 20b and 21b are opened, and the on / off valve 23a is closed and the on / off valve 23b is opened. The refrigerant on the downstream side of the cooling / heating switching valve 3
b, flowing through the heat exchange section 19 and the path 20a. Accordingly, the refrigerant is heated in the heat exchanging section 19 and becomes higher in temperature, and is supplied to the indoor unit 13.
【００２２】以上の構成では、このように蓄熱系統１８
に蓄熱した余剰の熱量を、必要に応じて室内機１３に利
用することができるので、この場合、室内機１３の負荷
は室外機６の最大容量を越えることができる。即ち、上
述した図２に於いて、図中左上の斜線部分は、室外機６
の最大容量（100％）よりも負荷の方が高い範囲である
が、この範囲の熱量を上記蓄熱した熱量により賄うよう
に構成することができる。従ってこの場合には、室外機
６の最大容量は全ての室内機が同時に運転された場合の
負荷、即ち全負荷よりも低く設定することができる。In the above configuration, the heat storage system 18
The excess heat stored in the indoor unit 13 can be used for the indoor unit 13 as necessary. In this case, the load of the indoor unit 13 can exceed the maximum capacity of the outdoor unit 6. That is, in the above-mentioned FIG.
Although the load is higher than the maximum capacity (100%), the heat amount in this range can be covered by the stored heat amount. Therefore, in this case, the maximum capacity of the outdoor unit 6 can be set lower than the load when all the indoor units are operated at the same time, that is, the full load.
【００２３】次に、冷暖房運転に際して前記余剰熱量が
発生する場合に於いて、蓄熱器１６に既に最大限の蓄熱
が行われている場合には、膨張弁１５は閉とすると共
に、膨張弁８を図１の構成に於けると同様の動作を行わ
せれば、冷媒の余剰熱量を放熱系統７を介して放散する
ことができ、従って正常な冷暖房運転を行うことができ
る。Next, in the case where the excess heat is generated during the cooling and heating operation, if the maximum heat is already stored in the regenerator 16, the expansion valve 15 is closed and the expansion valve 8 is closed. By performing the same operation as in the configuration of FIG. 1, the excess heat of the refrigerant can be dissipated through the heat radiating system 7, so that the normal cooling and heating operation can be performed.
【００２４】尚、以上の説明に於いては、膨張弁５、
８、１２、１５は電子膨張弁とすることにより、単独の
弁で上述した機能を果たしているが、同様な機能を果た
す構成であれば、複数の弁から構成するようにすること
もできる。In the above description, the expansion valve 5,
Each of the electronic expansion valves 8, 12, and 15 performs the above-described function by a single valve, but may be configured by a plurality of valves as long as the configuration performs the same function.
【００２５】[0025]
【発明の効果】本発明は以上の通りであるので、次のよ
うな効果がある。ａ．請求項１、２の発明では、 室内機の最小容量を適宜
に下げることができる。ｂ．請求項２の発明では、 冷暖房装置としての容量を室
内機自体の容量よりも大きくすることができ、設備費用
の低減を図ることができる。As described above, the present invention has the following effects. a. According to the first and second aspects of the invention, the minimum capacity of the indoor unit can be appropriately reduced. b. According to the second aspect of the present invention, the capacity of the cooling / heating device can be made larger than the capacity of the indoor unit itself, and the equipment cost can be reduced.
【図１】請求項１の発明に対応する実施例の系統説明図
である。FIG. 1 is a system explanatory diagram of an embodiment corresponding to the first aspect of the present invention.
【図２】冷暖房装置に於いて、一シーズンの冷暖房運転
時間に対しての室内機の負荷曲線を示すものである。FIG. 2 shows a load curve of an indoor unit with respect to a cooling / heating operation time in one season in the cooling / heating device.
【図３】請求項２の発明に対応する実施例の系統説明図
である。FIG. 3 is a system explanatory diagram of an embodiment corresponding to the invention of claim 2 ;
１ 圧縮機 ２ 電動機 ３ 冷暖房切換弁 ４ 室外熱交換器 ５ 膨張弁 ６ 室外機 ７ 放熱系統 ８ 膨張弁 ９ 放熱用熱交換器 １０ 冷媒経路 １１ 室内機 １２ 膨張弁 １３ 室内熱交換器 １４ ファン １５ 膨張弁 １６ 蓄熱器 １７ 冷媒熱交換経路 １８ 蓄熱系統 １９ 熱交換部 ２０、２１ 経路 ２２、２３ 開閉弁 DESCRIPTION OF SYMBOLS 1 Compressor 2 Electric motor 3 Cooling / heating switching valve 4 Outdoor heat exchanger 5 Expansion valve 6 Outdoor unit 7 Heat dissipation system 8 Expansion valve 9 Heat dissipation heat exchanger 10 Refrigerant path 11 Indoor unit 12 Expansion valve 13 Indoor heat exchanger 14 Fan 15 Expansion Valve 16 Regenerator 17 Refrigerant heat exchange path 18 Heat storage system 19 Heat exchange part 20, 21 Path 22, 23 Open / close valve
Claims (7)
室外熱交換器と膨張弁を構成要素とする室外機に、膨張
弁と室内熱交換器を構成要素とする多数の室内機を接続
して成るマルチ式冷暖房装置に於いて、前記室外機に、
膨張弁と放熱用熱交換器を構成要素とする、冷房運転及
び暖房運転に於いて動作可能な放熱系統を接続し、この
放熱系統の放熱容量は、前記室外機の最小容量に対応し
て設定したことを特徴とするマルチ式冷暖房装置1. An indoor unit comprising an expansion valve and an indoor heat exchanger is connected to an outdoor unit comprising a compressor for controlling the rotational speed, a cooling / heating switching valve, an outdoor heat exchanger and an expansion valve. In the multi-type cooling and heating device comprising:
Cooling operation and cooling, which consist of an expansion valve and a heat exchanger for heat dissipation
And a radiating system operable in heating and heating operation , wherein a radiating capacity of the radiating system is set corresponding to a minimum capacity of the outdoor unit.
室外熱交換器と膨張弁を構成要素とする室外機に、膨張
弁と室内熱交換器を構成要素とする多数の室内機を接続
して成るマルチ式冷暖房装置に於いて、前記室外機に、
膨張弁と放熱用熱交換器を構成要素とする、冷房運転及
び暖房運転に於いて動作可能な放熱系統を接続すると共
に、膨張弁と蓄熱器と、この蓄熱器を通る冷媒熱交換経
路を構成要素とする蓄熱系統を接続し、前記放熱系統の
放熱容量は、前記室外機の最小容量に対応して設定した
ことを特徴とするマルチ式冷暖房装置2. A large number of indoor units each including an expansion valve and an indoor heat exchanger are connected to an outdoor unit including a compressor that controls a rotation speed, a cooling / heating switching valve, an outdoor heat exchanger, and an expansion valve. In the multi-type cooling and heating device comprising:
Cooling operation and cooling, which consist of an expansion valve and a heat exchanger for heat dissipation
And a radiating system operable in heating operation, and an expansion valve and a regenerator, and a regenerator system having a refrigerant heat exchange path passing through the regenerator as a constituent element are connected, and the radiating capacity of the radiating system is , A multi-type air conditioner that is set according to the minimum capacity of the outdoor unit
用並びに閉路作用を選択実行可能な電子膨張弁であるこ
とを特徴とする請求項１または２記載のマルチ式冷暖房
装置3. The multi-type cooling and heating apparatus according to claim 1, wherein the expansion valve is an electronic expansion valve capable of selectively performing an expansion operation, a flow control operation, and a closing operation of the refrigerant.
とを特徴とする請求項１または２記載のマルチ式冷暖房
装置4. The multi-type cooling / heating apparatus according to claim 1 , wherein the heat radiation system is installed integrally with the outdoor unit.
とを特徴とする請求項２記載のマルチ式冷暖房装置5. The multi-type cooling / heating apparatus according to claim 2 , wherein the heat storage system is installed integrally with the outdoor unit.
ことを特徴とする請求項１または２記載のマルチ式冷暖
房装置6. The multi-type cooling and heating apparatus according to claim 1 , wherein the heat radiation system is installed separately from the outdoor unit.
ことを特徴とする請求項２記載のマルチ式冷暖房装置 7. The multi-type cooling / heating apparatus according to claim 2 , wherein the heat storage system is installed separately from the outdoor unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35876491A JP2967793B2 (en) | 1991-12-30 | 1991-12-30 | Multi-type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35876491A JP2967793B2 (en) | 1991-12-30 | 1991-12-30 | Multi-type air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05180525A JPH05180525A (en) | 1993-07-23 |
| JP2967793B2 true JP2967793B2 (en) | 1999-10-25 |
Family
ID=18460994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35876491A Expired - Fee Related JP2967793B2 (en) | 1991-12-30 | 1991-12-30 | Multi-type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2967793B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140105431A (en) * | 2011-12-06 | 2014-09-01 | 파나소닉 주식회사 | Air conditioner and refrigeration cycle device |
-
1991
- 1991-12-30 JP JP35876491A patent/JP2967793B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05180525A (en) | 1993-07-23 |
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