JPH05149648A - Air-conditioner - Google Patents
Air-conditionerInfo
- Publication number
- JPH05149648A JPH05149648A JP34027791A JP34027791A JPH05149648A JP H05149648 A JPH05149648 A JP H05149648A JP 34027791 A JP34027791 A JP 34027791A JP 34027791 A JP34027791 A JP 34027791A JP H05149648 A JPH05149648 A JP H05149648A
- Authority
- JP
- Japan
- Prior art keywords
- indoor
- outdoor
- pipe
- liquid
- heat exchangers
- 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.)
- Granted
Links
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は複数の室内ユニットを備
え、冷房運転、暖房運転及び冷・暖房同時運転が可能な
空気調和機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a plurality of indoor units and capable of cooling operation, heating operation and simultaneous cooling / heating operation.
【０００２】[0002]
【従来の技術】従来のこの種空気調和機の１例が図２に
示されている。図２において、１は圧縮機、10は吐出管
で、圧縮機１の吐出側に接続されている。11は吸入管
で、圧縮機１の吸入側に接続されている。３は室外側熱
交換器で、そのガス側はそれぞれ室外側切換弁２を介し
て吐出管10又は吸入管11に選択的に接続される。7A、7
B、7Cは室内側熱交換器で、そのガス側はそれぞれ室内
側切換弁8A、8B、8Cを介して吐出管10又は吸入管11に選
択的に接続される。４は室外側絞り機構で、室外側熱交
換器３の液側に配設されている。6A、6B、6Cは室内側絞
り機構で、それぞれ室内側熱交換器7A、7B、7Cの液側に
配設されている。12は液冷媒配管で、室外側絞り機構４
の液側と複数の室内側絞り機構6A、6B、6Cの液側とを接
続している。13は室外側送風機で、室外側熱交換器３に
外気を流過させる。9A、9B、9Cは室内側送風機で、室内
側熱交換器7A、7B、7Cに室内空気を流過させる。５はレ
シーバで、液冷媒配管12に介装されている。14はアキュ
ムレ−タで、圧縮機１の吸入側に介装されている。2. Description of the Related Art An example of a conventional air conditioner of this type is shown in FIG. In FIG. 2, 1 is a compressor, and 10 is a discharge pipe, which is connected to the discharge side of the compressor 1. The suction pipe 11 is connected to the suction side of the compressor 1. Reference numeral 3 denotes an outdoor heat exchanger, the gas side of which is selectively connected to the discharge pipe 10 or the suction pipe 11 via the outdoor switching valve 2. 7A, 7
B and 7C are indoor heat exchangers, the gas sides of which are selectively connected to the discharge pipe 10 or the suction pipe 11 via the indoor switching valves 8A, 8B, and 8C, respectively. An outdoor throttling mechanism 4 is arranged on the liquid side of the outdoor heat exchanger 3. Reference numerals 6A, 6B, and 6C denote indoor throttle mechanisms, which are provided on the liquid sides of the indoor heat exchangers 7A, 7B, and 7C, respectively. Reference numeral 12 is a liquid refrigerant pipe, which is an outdoor expansion mechanism 4
Is connected to the liquid sides of the plurality of indoor throttle mechanisms 6A, 6B, 6C. Reference numeral 13 denotes an outdoor blower, which allows the outdoor heat exchanger 3 to pass the outside air. 9A, 9B and 9C are indoor blowers, which allow indoor air to flow through the indoor heat exchangers 7A, 7B and 7C. A receiver 5 is provided in the liquid refrigerant pipe 12. An accumulator 14 is provided on the suction side of the compressor 1.
【０００３】Ｏは室外ユニットで、この中には圧縮機
１、室外側切換弁２、室外側熱交換器３、室外側送風機
13、室外側絞り機構４、レシーバ５、アキュムレ−タ14
等が内蔵されている。Ａ、Ｂ、Ｃはそれぞれ室内ユニッ
トで、室内ユニットＡには室内側熱交換器7A、室内側切
換弁8A、室内側絞り機構6A及び室内側送風機9Aが内蔵さ
れ、室内ユニットＢには室内側熱交換器7B、室内側切換
弁8B、室内側絞り機構6B及び室内側送風機9Bが内蔵さ
れ、室内ユニットＣには室内側熱交換器7C、室内側切換
弁8C、室内側絞り機構6C及び室内側送風機9Cが内蔵され
ている。室外ユニットＯと複数の室内ユニットＡ、Ｂ、
Ｃとは吐出管10、吸入管11、液冷媒配管12を介して互い
に接続されている。Reference numeral O denotes an outdoor unit, in which a compressor 1, an outdoor switching valve 2, an outdoor heat exchanger 3, an outdoor blower are provided.
13, outdoor side diaphragm mechanism 4, receiver 5, accumulator 14
Etc. are built in. A, B, and C are indoor units. The indoor unit A has an indoor heat exchanger 7A, an indoor switching valve 8A, an indoor throttle mechanism 6A, and an indoor blower 9A, and an indoor unit B has an indoor side. The heat exchanger 7B, the indoor switching valve 8B, the indoor throttle mechanism 6B and the indoor blower 9B are built in, and the indoor unit C has an indoor heat exchanger 7C, an indoor switching valve 8C, an indoor throttle mechanism 6C and a room. Built-in blower 9C inside. The outdoor unit O and the plurality of indoor units A, B,
C is connected to each other via a discharge pipe 10, a suction pipe 11 and a liquid refrigerant pipe 12.
【０００４】室内ユニットＡ、Ｂ、Ｃの全て又は一部が
冷房運転されるとき、例えば、室内ユニットＡ、Ｂが冷
房運転、室内ユニットＣが休止される場合には、室外側
絞り機構４は全開とされ、室内側絞り機構6A、6Bは予め
定められた開度とされ、室内側絞り機構6Cは全閉とされ
る。そして、室外側切換弁２は室外側熱交換器３を吐出
管10に連通させるように切り換えられ、室内側切換弁8
A、8Bは室内側熱交換器7A、7Bを吸入管11に連通させる
ように切り換えられる。すると、圧縮機１で圧縮された
冷媒ガスは吐出管10、室外側切換弁２を経て室外側熱交
換器３に入り、ここで室外側送風機13によって送風され
る外気に放熱することにより凝縮液化して液冷媒とな
る。次いで、この液冷媒は全開とされた室外側絞り機構
４を通過してレシーバ５に入り、ここでガス成分が分離
される。レシーバ５から流出した液冷媒は液冷媒配管12
を経て室内側絞り機構6A、6Bに入り、ここで絞られるこ
とによって断熱膨張して気液二相となる。この気液二相
の冷媒は室内側熱交換器7A、7Bに入り、ここで室内側送
風機9A、9Bによって送風される室内空気を冷却すること
によって蒸発気化する。このガス冷媒は室内側切換弁8
A、8B、吸入管11、アキュムレ−タ14を経て圧縮機１に
吸入される。When all or a part of the indoor units A, B, C are cooled, for example, when the indoor units A, B are cooled and the indoor unit C is stopped, the outdoor throttle mechanism 4 is It is fully opened, the indoor throttle mechanisms 6A and 6B are set to predetermined openings, and the indoor throttle mechanism 6C is fully closed. The outdoor switching valve 2 is switched so that the outdoor heat exchanger 3 communicates with the discharge pipe 10, and the indoor switching valve 8
A and 8B are switched so that the indoor heat exchangers 7A and 7B communicate with the suction pipe 11. Then, the refrigerant gas compressed by the compressor 1 enters the outdoor heat exchanger 3 through the discharge pipe 10 and the outdoor switching valve 2, and radiates heat to the outside air blown by the outdoor blower 13 to condense and liquefy. And becomes a liquid refrigerant. Next, the liquid refrigerant passes through the fully opened outdoor side expansion mechanism 4 and enters the receiver 5, where the gas components are separated. The liquid refrigerant flowing out from the receiver 5 is the liquid refrigerant pipe 12
After that, it enters the indoor throttle mechanisms 6A and 6B, and when it is throttled there, it is adiabatically expanded into a gas-liquid two-phase. The gas-liquid two-phase refrigerant enters the indoor heat exchangers 7A and 7B, where the indoor air blown by the indoor blowers 9A and 9B is cooled and evaporated and vaporized. This gas refrigerant is used in the indoor switching valve 8
It is sucked into the compressor 1 through A, 8B, the suction pipe 11 and the accumulator 14.
【０００５】室内ユニットＡ、Ｂ、Ｃの全て又は一部が
暖房運転されるとき、例えば、室内ユニットＡ、Ｂを暖
房運転、室内ユニットＣを休止する場合には、室外側絞
り機構４、室内側絞り機構6A、6Bは予め定められた開度
とされ、室内側絞り機構6Cは全閉とされる。そして、室
外側切換弁２、室内側切換弁8A、8Bは上記冷房運転時と
逆に切り換えられる。かくして、圧縮機１から吐出され
た冷媒は吐出管10、室内側切換弁8A、8Bを経て室内側熱
交換器7A、7Bで凝縮液化し、室内側絞り機構6A、6Bで絞
られた後、液冷媒配管12、レシーバ５を経て室外側絞り
機構４で断熱膨張する。次いで、室外側熱交換器３で蒸
発気化した後、室外側切換弁２、吸入管11、アキュムレ
−タ14をこの順に経て圧縮機1に戻る。When all or some of the indoor units A, B, C are operated for heating, for example, when the indoor units A, B are operated for heating and the indoor unit C is stopped, the outdoor expansion mechanism 4, the room The inner throttle mechanisms 6A and 6B are set to a predetermined opening, and the indoor throttle mechanism 6C is fully closed. Then, the outdoor switching valve 2 and the indoor switching valves 8A and 8B are switched in the opposite manner to that during the cooling operation. Thus, the refrigerant discharged from the compressor 1 is condensed and liquefied by the indoor heat exchangers 7A, 7B via the discharge pipe 10, the indoor switching valves 8A, 8B, and is throttled by the indoor throttle mechanisms 6A, 6B, Adiabatic expansion is performed by the outdoor side expansion mechanism 4 via the liquid refrigerant pipe 12 and the receiver 5. Next, after evaporating and evaporating in the outdoor heat exchanger 3, the outdoor switching valve 2, the suction pipe 11, and the accumulator 14 are returned to the compressor 1 in this order.
【０００６】冷・暖房同時運転時において、冷房運転さ
れる室内ユニットの数と暖房運転される室内ユニットの
数が等しいとき、例えば、室内ユニットＣが冷房運転、
室内ユニットＡが暖房運転、室内ユニットＢが休止され
る場合、室外側絞り機構４及び室内側絞り機構6Bが全
閉、室内側絞り機構6A、6Cは予め定められた開度とされ
る。そして、室内側切換弁8Aは吐出管10に連通し、室内
側切換弁8Cは吸入管11に連通するように切り換えられ
る。かくして、圧縮機１から吐出された冷媒は吐出管1
0、室内側切換弁8A、室内側熱交換器7A、室内側絞り機
構6A、液冷媒配管12、室内側絞り機構6C、室内側熱交換
器7C、室内側切換弁8C、吸入管11、アキュムレ−タ14を
この順に経て圧縮機１に戻る。In the simultaneous cooling / heating operation, when the number of indoor units operated in cooling is equal to the number of indoor units operated in heating, for example, the indoor unit C is operated in cooling operation.
When the indoor unit A is in the heating operation and the indoor unit B is not in operation, the outdoor expansion mechanism 4 and the indoor expansion mechanism 6B are fully closed, and the indoor expansion mechanisms 6A and 6C are set to predetermined opening degrees. Then, the indoor switching valve 8A is switched to communicate with the discharge pipe 10, and the indoor switching valve 8C is switched to communicate with the suction pipe 11. Thus, the refrigerant discharged from the compressor 1 is the discharge pipe 1
0, indoor switching valve 8A, indoor heat exchanger 7A, indoor throttle mechanism 6A, liquid refrigerant piping 12, indoor throttle mechanism 6C, indoor heat exchanger 7C, indoor switching valve 8C, suction pipe 11, accumulator -Returns to the compressor 1 after passing through the data 14 in this order.
【０００７】冷・暖房同時運転時において、冷房運転さ
れる室内ユニットの数が暖房運転される室内ユニットの
数より多い場合、例えば、室内ユニットＢ、Ｃが冷房運
転、室内ユニットＡが暖房運転されるときには、室外側
絞り機構４、室内側絞り機構6A、6B、6Cは予め定められ
た開度とされる。そして、室外側切換弁２及び室内側切
換弁8Aは吐出管10に連通し、室内側切換弁8B、8Cは吸入
管11に連通するように切り換えられる。かくして、圧縮
機１から吐出された冷媒はＰ点で分岐し、その一部は吐
出管10L 、室外側切換弁２、室外側熱交換器３、室外側
絞り機構４、レシーバ５を経て液冷媒配管12に入る。残
部は吐出管10R 、室内側切換弁8A、室内側熱交換器7A、
室内側絞り機構6Aを経て液冷媒配管12に入り、先に分岐
した冷媒と合流する。次いで、この冷媒は室内側絞り機
構6B、6C、室内側熱交換器7B、7C、室内側切換弁8B、8
C、吸入管11、アキュムレ−タ14をこの順に経て圧縮機
１に戻る。In the simultaneous cooling and heating operation, when the number of indoor units to be cooled is larger than the number of indoor units to be heated, for example, the indoor units B and C are in cooling operation and the indoor unit A is in heating operation. When opening, the outdoor side expansion mechanism 4 and the indoor side expansion mechanisms 6A, 6B, and 6C are set to predetermined openings. Then, the outdoor switching valve 2 and the indoor switching valve 8A are switched to communicate with the discharge pipe 10, and the indoor switching valves 8B and 8C are switched to communicate with the suction pipe 11. Thus, the refrigerant discharged from the compressor 1 is branched at the point P, and a part of the branched refrigerant passes through the discharge pipe 10L, the outdoor switching valve 2, the outdoor heat exchanger 3, the outdoor throttling mechanism 4, and the receiver 5, and is a liquid refrigerant. Enter pipe 12. The rest is discharge pipe 10R, indoor switching valve 8A, indoor heat exchanger 7A,
The liquid refrigerant enters the liquid refrigerant pipe 12 through the indoor side throttling mechanism 6A and joins with the refrigerant branched previously. Then, this refrigerant is the indoor expansion mechanism 6B, 6C, indoor heat exchangers 7B, 7C, indoor switching valves 8B, 8C.
C, the suction pipe 11, and the accumulator 14 are passed in this order and returned to the compressor 1.
【０００８】[0008]
【発明が解決しようとする課題】上記従来の空気調和機
においては、冷房負荷の変動に室外ユニットＯの能力を
きめ細く追随させることができないという問題があっ
た。The above-mentioned conventional air conditioner has a problem that the capacity of the outdoor unit O cannot be finely followed by the fluctuation of the cooling load.
【０００９】[0009]
【課題を解決するための手段】本発明は上記課題を解決
するために発明されたものであって、その要旨とすると
ころは、圧縮機と、この圧縮機の吐出側に接続された吐
出管と、上記圧縮機の吸込側に接続された吸入管と、複
数の室外側熱交換器と、複数の室内側熱交換器と、上記
複数の室外側熱交換器のガス側をそれぞれ上記吐出管又
は上記吸入管に選択的に連通させる室外側切換弁と、上
記各室内側熱交換器のガス側をそれぞれ上記吐出管又は
上記吸入管に選択的に連通させる室内側切換弁と、上記
各室内側熱交換器の液側にそれぞれ設けられた室内側絞
り機構と、上記各室外側熱交換器の液側に設けられた室
外側絞り機構と、上記複数の室外側絞り機構の液側と上
記複数の室内側絞り機構の液側とを接続する液冷媒配管
と、上記室外側切換弁の少なくとも１つと上記吐出管と
を接続する回路と並列に介装された流量調整弁とを備え
ていることを特徴とする空気調和機にある。SUMMARY OF THE INVENTION The present invention has been invented to solve the above problems, and its gist is to provide a compressor and a discharge pipe connected to the discharge side of the compressor. A suction pipe connected to the suction side of the compressor, a plurality of outdoor heat exchangers, a plurality of indoor heat exchangers, and the gas side of the plurality of outdoor heat exchangers respectively the discharge pipe Alternatively, an outdoor switching valve that selectively communicates with the suction pipe, an indoor switching valve that selectively communicates the gas side of each indoor heat exchanger with the discharge pipe or the suction pipe, and each chamber. Indoor side throttle mechanisms provided on the liquid side of the inner heat exchanger, outdoor side throttle mechanisms provided on the liquid side of each of the outdoor heat exchangers, liquid sides of the plurality of outdoor side throttle mechanisms, and the above A liquid refrigerant pipe connecting the liquid sides of a plurality of indoor side throttling mechanisms and the outdoor side cutoff In the air conditioner, characterized in that it comprises a flow regulating valve interposed in parallel to a circuit that connects the at least one said discharge pipe of the valve.
【００１０】[0010]
【作用】本発明においては、上記構成を具えているた
め、冷房負荷の変動に応じて冷媒ガスが流過する室外側
熱交換器の数を増減し、かつ、流量調整弁によって室外
側熱交換器を流過する冷媒ガスの量を増減することによ
って室外ユニットの能力を調整する。In the present invention, since the above-mentioned configuration is provided, the number of outdoor heat exchangers through which the refrigerant gas flows is increased or decreased according to the fluctuation of the cooling load, and the outdoor heat exchange is performed by the flow rate adjusting valve. The capacity of the outdoor unit is adjusted by increasing or decreasing the amount of refrigerant gas flowing through the vessel.
【００１１】[0011]
【実施例】本発明の１実施例が図１に示されている。室
外ユニットＯは容量の異なる複数（図には２ヶ）の室外
側熱交換器3A、3Bを有し、このガス側にはそれぞれ室外
側切換弁2A、2Bが、液側にはそれぞれ室外側絞り機構4
A、4Bが設けられている。そして、小容量の室外側熱交
換器3Bのガス側に配設された室外側切換弁2Bと吐出管10
とを接続する回路17にはキャピラリチューブ18が設けら
れている。そして、この回路17と並列に接続された回路
24には一定圧以上で開となる流量調整弁25が介装されて
いる。DESCRIPTION OF THE PREFERRED EMBODIMENT One embodiment of the present invention is shown in FIG. The outdoor unit O has a plurality of (two in the figure) outdoor heat exchangers 3A and 3B having different capacities, and the gas side has outdoor switching valves 2A and 2B, and the liquid side has outdoor sides, respectively. Aperture mechanism 4
A and 4B are provided. The outdoor switching valve 2B and the discharge pipe 10 arranged on the gas side of the small-capacity outdoor heat exchanger 3B.
A capillary tube 18 is provided in the circuit 17 for connecting to and. And the circuit connected in parallel with this circuit 17
A flow rate adjusting valve 25, which opens at a certain pressure or more, is provided at 24.
【００１２】各室外側絞り機構4A、4Bの液側にはそれぞ
れ室外側電磁弁19A 、19B が設けられ、これら室外側電
磁弁19A 、19B の液側にはそれぞれ過冷却器20A 、20B
が設けられている。そして、室外側電磁弁19A 、19B と
過冷却器20A 、20B との間にバイパス管21の１端が接続
され、このバイパス管21の他端は吐出管10に接続されて
いる。このバイパス管21には電磁弁22とキャピラリチュ
ーブ23が介装されている。他の構成は図２に示す従来の
ものと同様であり、対応する部材には同じ符号が付され
ている。Outdoor side solenoid valves 19A and 19B are provided on the liquid sides of the outdoor side throttle mechanisms 4A and 4B, respectively, and subcoolers 20A and 20B are provided on the liquid sides of these outdoor side solenoid valves 19A and 19B, respectively.
Is provided. One end of the bypass pipe 21 is connected between the outdoor solenoid valves 19A, 19B and the subcoolers 20A, 20B, and the other end of the bypass pipe 21 is connected to the discharge pipe 10. An electromagnetic valve 22 and a capillary tube 23 are interposed in the bypass pipe 21. Other configurations are similar to those of the conventional one shown in FIG. 2, and corresponding members are designated by the same reference numerals.
【００１３】しかして、冷房負荷が大きい場合には、電
磁弁22を閉、室外側電磁弁19A 、19B を開として吐出管
10からの冷媒ガスを大容量の室外側熱交換器3A及び小容
量の室外側熱交換器3Bの双方及び過冷却器20A 、20B を
流過させる。負荷の増大に伴って高圧圧力が上昇し、こ
れが一定圧力を越えると、流量調整弁25はこれを感知し
て開弁し、以後、高圧圧力の増大に応じてその開度が増
大して流量調整弁25を通る流量、即ち、小容量の室外側
熱交換器3Bを通る冷媒ガスの量を増大させてその熱交換
能力を増大させることにより高圧圧力の上昇を阻止す
る。When the cooling load is large, the solenoid valve 22 is closed and the outdoor solenoid valves 19A and 19B are opened, and the discharge pipe is closed.
The refrigerant gas from 10 is passed through both the large-capacity outdoor heat exchanger 3A and the small-capacity outdoor heat exchanger 3B and the subcoolers 20A, 20B. When the high pressure increases as the load increases and exceeds a certain level, the flow rate adjustment valve 25 senses this and opens the valve.After that, the opening increases as the high pressure increases and the flow rate increases. The flow rate through the regulating valve 25, that is, the amount of the refrigerant gas passing through the small-capacity outdoor heat exchanger 3B is increased to increase its heat exchange capacity, thereby preventing the high pressure from rising.
【００１４】室外ユニットＯの能力を低下させる場合に
は、室外側電磁弁19B を閉として冷媒ガスを大容量の室
外熱交換器3A、過冷却器20A を流過させる。更に、室外
ユニットＯの能力を低下させる場合には、室外側電磁弁
19A を閉、室外側電磁弁19Bを開として冷媒ガスを小容
量の室外熱交換器3B、過冷却器20B を流下させる。この
状態で高圧圧力が一定圧力以上に上昇したら流量調整弁
25を開弁することによって小容量の室外側熱交換器3Bの
熱交換能力を増大させる。更に、室外ユニットＯの能力
を低下させる場合には、室外側電磁弁19A 、19B を閉、
電磁弁22を開として吐出管10からの冷媒ガスをバイパス
管21、電磁弁22、キャピラリチューブ23を経て過冷却器
20A、20B を流過させる。なお、冷・暖房同時運転時も
冷房負荷の変動に応じて上記と同様に室外ユニットＯの
能力を変更する。When the capacity of the outdoor unit O is reduced, the outdoor solenoid valve 19B is closed to allow the refrigerant gas to flow through the large capacity outdoor heat exchanger 3A and subcooler 20A. Further, when the capacity of the outdoor unit O is reduced, the outdoor solenoid valve
19A is closed and the outdoor solenoid valve 19B is opened to allow the refrigerant gas to flow through the small-capacity outdoor heat exchanger 3B and subcooler 20B. If the high pressure rises above a certain level in this state, the flow rate adjustment valve
By opening 25, the heat exchange capacity of the small-capacity outdoor heat exchanger 3B is increased. Further, when the capacity of the outdoor unit O is reduced, the outdoor solenoid valves 19A and 19B are closed,
The solenoid valve 22 is opened to allow the refrigerant gas from the discharge pipe 10 to pass through the bypass pipe 21, the solenoid valve 22, and the capillary tube 23, and the supercooler.
Flow through 20A and 20B. Even during the simultaneous cooling / heating operation, the capacity of the outdoor unit O is changed in the same manner as described above according to the fluctuation of the cooling load.
【００１５】上記実施例においては、流量調整弁25とし
てこれを流過するガス圧を感知し、これが一定圧以上に
なったとき開弁し、以後ガス圧の上昇に応じて開度が増
大してこれを流過するガスの流量を増大させる直動型流
量制御弁を用いているが、これに代えてパイロット圧や
制御電流に応じて流量を変更しうる任意の型の流量制御
弁を用いることができる。また、流量制御弁25は室外側
切換弁2Aと吐出管10との間に介装することもできる。In the above embodiment, the flow rate adjusting valve 25 senses the gas pressure flowing through it and opens when it exceeds a certain pressure, and thereafter the opening degree increases as the gas pressure increases. A direct-acting type flow control valve is used to increase the flow rate of the gas passing through it, but instead of this, any type of flow control valve that can change the flow rate according to pilot pressure or control current is used. be able to. Further, the flow rate control valve 25 can be interposed between the outdoor side switching valve 2A and the discharge pipe 10.
【００１６】[0016]
【発明の効果】本発明においては、冷房負荷の変動に応
じて冷媒ガスが流過する室外側熱交換器の数を増減し、
かつ、流量調整弁によって室外側熱交換器を流過する冷
媒ガスの量を増減することができるので、室外ユニット
の能力をきめ細く調整することができる。According to the present invention, the number of outdoor heat exchangers through which the refrigerant gas flows is increased or decreased according to the fluctuation of the cooling load,
Moreover, since the amount of the refrigerant gas flowing through the outdoor heat exchanger can be increased or decreased by the flow rate adjusting valve, the capacity of the outdoor unit can be finely adjusted.
【図１】本発明の１実施例を示す系統図である。FIG. 1 is a system diagram showing an embodiment of the present invention.
【図２】従来の空気調和機の系統図である。FIG. 2 is a system diagram of a conventional air conditioner.
１ 圧縮機 10 吐出管 11 吸入管 Ｏ 室外ユニット 3A、3B 室外側熱交換器 Ａ、Ｂ、Ｃ 室内ユニット 7A、7B、7C 室内側熱交換器 12 液冷媒配管 2A、2B 室外側切換弁 8A、8B、8C 室内側切換弁 4A、4B 室外側絞り機構 6A、6B、6C 室内側絞り機構 25 流量調整弁 1 Compressor 10 Discharge pipe 11 Suction pipe O Outdoor unit 3A, 3B Outdoor heat exchanger A, B, C Indoor unit 7A, 7B, 7C Indoor heat exchanger 12 Liquid refrigerant pipe 2A, 2B Outdoor switching valve 8A, 8B, 8C Indoor side switching valve 4A, 4B Outdoor side throttle mechanism 6A, 6B, 6C Indoor side throttle mechanism 25 Flow rate adjustment valve
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小林 隆之 愛知県西春日井郡西枇杷島町字旭町三丁目 １番地 三菱重工業株式会社エアコン製作 所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayuki Kobayashi 3-chome, Asahi-cho, Nishibiwajima-cho, Nishi-Kasugai-gun, Aichi Prefecture Mitsubishi Heavy Industries, Ltd. Air Conditioning Factory
Claims (1)
れた吐出管と、上記圧縮機の吸込側に接続された吸入管
と、複数の室外側熱交換器と、複数の室内側熱交換器
と、上記複数の室外側熱交換器のガス側をそれぞれ上記
吐出管又は上記吸入管に選択的に連通させる室外側切換
弁と、上記各室内側熱交換器のガス側をそれぞれ上記吐
出管又は上記吸入管に選択的に連通させる室内側切換弁
と、上記各室内側熱交換器の液側にそれぞれ設けられた
室内側絞り機構と、上記各室外側熱交換器の液側に設け
られた室外側絞り機構と、上記複数の室外側絞り機構の
液側と上記複数の室内側絞り機構の液側とを接続する液
冷媒配管と、上記室外側切換弁の少なくとも１つと上記
吐出管とを接続する回路と並列に介装された流量調整弁
とを備えていることを特徴とする空気調和機。1. A compressor, a discharge pipe connected to a discharge side of the compressor, a suction pipe connected to a suction side of the compressor, a plurality of outdoor heat exchangers, and a plurality of indoor sides. A heat exchanger, an outdoor switching valve for selectively communicating the gas sides of the plurality of outdoor heat exchangers with the discharge pipe or the suction pipe, and the gas sides of the indoor heat exchangers, respectively. An indoor-side switching valve that selectively communicates with the discharge pipe or the suction pipe, an indoor-side throttle mechanism provided on the liquid side of each of the indoor heat exchangers, and a liquid side of each of the outdoor heat exchangers. An outdoor throttling mechanism provided, a liquid refrigerant pipe connecting the liquid sides of the plurality of outdoor throttling mechanisms to the liquid sides of the plurality of indoor throttling mechanisms, at least one of the outdoor side switching valves, and the discharge It is equipped with a circuit connecting the pipe and a flow rate adjusting valve interposed in parallel. A characteristic air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34027791A JP2971222B2 (en) | 1991-11-29 | 1991-11-29 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34027791A JP2971222B2 (en) | 1991-11-29 | 1991-11-29 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05149648A true JPH05149648A (en) | 1993-06-15 |
| JP2971222B2 JP2971222B2 (en) | 1999-11-02 |
Family
ID=18335402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34027791A Expired - Fee Related JP2971222B2 (en) | 1991-11-29 | 1991-11-29 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2971222B2 (en) |
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-
1991
- 1991-11-29 JP JP34027791A patent/JP2971222B2/en not_active Expired - Fee Related
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| JP2002106984A (en) * | 2000-09-28 | 2002-04-10 | Mitsubishi Electric Corp | Control method and exchanging method for refrigerant circuit as well as refrigerant circuit device |
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|---|---|
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