JPH11190563A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH11190563A JPH11190563A JP35936897A JP35936897A JPH11190563A JP H11190563 A JPH11190563 A JP H11190563A JP 35936897 A JP35936897 A JP 35936897A JP 35936897 A JP35936897 A JP 35936897A JP H11190563 A JPH11190563 A JP H11190563A
- Authority
- JP
- Japan
- Prior art keywords
- indoor heat
- heat exchanger
- refrigerant
- branch
- air conditioner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、複数の室内熱交
換器を備えて複数の部屋を空気調和する空気調和機に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a plurality of indoor heat exchangers for air conditioning a plurality of rooms.
【０００２】[0002]
【従来の技術】従来、この種の空気調和機としては、図
２に示すものがある。この空気調和機は、圧縮機５１
と、四路切換弁５２と、室外熱交換器５３と、この室外
熱交換器５３を２つの室内熱交換器６２，６３に接続す
る液側分岐路５４を備える。この分岐路５４の分岐枝５
４Ａ，５４Ｂには、それぞれ、膨張機構としての膨張弁
５５，５６が設けられている。また、この膨張弁５５と
室内熱交換器６２との間には継手５７，６０が設けられ
ている。また、上記膨張弁５６と室内熱交換器６３との
間には継手５８，６１が設けられている。2. Description of the Related Art A conventional air conditioner of this type is shown in FIG. This air conditioner has a compressor 51
, A four-way switching valve 52, an outdoor heat exchanger 53, and a liquid-side branch passage 54 connecting the outdoor heat exchanger 53 to two indoor heat exchangers 62 and 63. Branch 5 of this branch 54
4A and 54B are provided with expansion valves 55 and 56 as expansion mechanisms, respectively. Joints 57 and 60 are provided between the expansion valve 55 and the indoor heat exchanger 62. Joints 58 and 61 are provided between the expansion valve 56 and the indoor heat exchanger 63.
【０００３】そして、上記２つの室内熱交換器６２，６
３はガス側分岐路５９でもって、四路切換弁５２に接続
されている。このガス側分岐路５９の２つの分岐枝５９
Ａおよび５９Ｂには、それぞれ、継手６４，６６および
６５，６７が設けられている。そして、このガス側分岐
路５９は上記四路切換弁５２を経由してアキュムレータ
７１に接続されており、このアキュムレータ７１は圧縮
機５１の吸入側に接続されている。The two indoor heat exchangers 62, 6
3 is connected to the four-way switching valve 52 by a gas-side branch passage 59. The two branch branches 59 of the gas side branch path 59
A and 59B are provided with joints 64, 66 and 65, 67, respectively. The gas-side branch passage 59 is connected to the accumulator 71 via the four-way switching valve 52, and the accumulator 71 is connected to the suction side of the compressor 51.
【０００４】この空気調和機は、四路切換弁５２が実線
経路を連通させているときには、圧縮機５１からの冷媒
を室外熱交換器５３で凝縮させ、液側分岐路５４の膨張
弁５５，５６を経由して、２つの室内熱交換器６２，６
３で蒸発させて、２室を冷房する。一方、四路切換弁５
２が破線経路を連通させているときには、圧縮機５１か
らの冷媒をガス側分岐路５９の分岐枝５９Ａ，５９Ｂを
経由して室内熱交換器６２，６３に導入して凝縮して上
記２室を暖房する。In this air conditioner, when the four-way switching valve 52 communicates with the solid line path, the refrigerant from the compressor 51 is condensed in the outdoor heat exchanger 53, and the expansion valve 55, Via the two indoor heat exchangers 62, 6
Evaporate in 3 and cool 2 chambers. On the other hand, the four-way switching valve 5
2, the refrigerant from the compressor 51 is introduced into the indoor heat exchangers 62 and 63 via the branch branches 59A and 59B of the gas-side branch passage 59 and condensed, and is condensed. To heat.
【０００５】[0005]
【発明が解決しようとする課題】ところが、上記２室を
暖房する必要がなく、１室のみを暖房する場合にも、上
記２つの室内熱交換器６２，６３に冷媒を導入していた
ので、エネルギーロスとなっていた。However, even when it is not necessary to heat the two rooms and only one room is heated, the refrigerant is introduced into the two indoor heat exchangers 62 and 63. Energy loss.
【０００６】そこで、この発明の目的は、複数の室を暖
房できる空気調和機において、暖房する必要が無い室の
室内熱交換器に冷媒を導入しないようにして、エネルギ
ー効率を向上できる空気調和機を提供することにある。Accordingly, an object of the present invention is to provide an air conditioner capable of heating a plurality of rooms, in which no refrigerant is introduced into an indoor heat exchanger of a room that does not need to be heated, thereby improving energy efficiency. Is to provide.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、請求項１の発明の空気調和機は、圧縮機と、室外熱
交換器と、複数の室内熱交換器と、上記室外熱交換器を
上記複数の室内熱交換器それぞれに接続する液側分岐路
と、上記液側分岐路に設けられた複数の膨張機構と、上
記複数の室内熱交換器それぞれを上記圧縮機に接続する
ガス側分岐路とを備え、上記ガス側分岐路の少なくとも
１つの分岐枝に電動弁を設けたことを特徴としている。According to an aspect of the present invention, there is provided an air conditioner comprising: a compressor; an outdoor heat exchanger; a plurality of indoor heat exchangers; A liquid-side branch connecting each of the plurality of indoor heat exchangers, a plurality of expansion mechanisms provided in the liquid-side branch, and a gas side connecting each of the plurality of indoor heat exchangers to the compressor. A branch path, and a motor-operated valve is provided on at least one branch of the gas-side branch path.
【０００８】この請求項１の発明では、暖房運転時に、
上記電動弁を閉じることによって、この電動弁が接続さ
れた分岐枝に接続されている室内熱交換器に冷媒を供給
しないようにできる。したがって、暖房する必要のない
室の室内熱交換器への冷媒供給を止めることができ、エ
ネルギー損失を削減できる。According to the first aspect of the present invention, during the heating operation,
By closing the electric valve, the refrigerant can be prevented from being supplied to the indoor heat exchanger connected to the branch to which the electric valve is connected. Therefore, the supply of the refrigerant to the indoor heat exchanger of the room that does not need to be heated can be stopped, and the energy loss can be reduced.
【０００９】また、請求項２の発明は、請求項１に記載
の空気調和機において、上記ガス側分岐路の少なくとも
１つの分岐枝に電動弁を設けていないことを特徴として
いる。The invention according to claim 2 is characterized in that, in the air conditioner according to claim 1, no electric valve is provided on at least one branch of the gas side branch.
【００１０】この請求項２の発明では、暖房運転が必ず
必要となる室に配置される室内熱交換器に接続されてい
る分岐枝に電動弁を設けないようにして、コストダウン
を図れる。According to the second aspect of the present invention, the cost can be reduced by not providing a motor-operated valve on the branch connected to the indoor heat exchanger disposed in the room where the heating operation is necessarily required.
【００１１】また、請求項３の発明は、請求項１または
２に記載の空気調和機において、上記圧縮機の停止時
に、上記電動弁を全閉と全開の中間開度に設定する電動
弁制御部を備えたことを特徴としている。According to a third aspect of the present invention, in the air conditioner according to the first or second aspect, when the compressor is stopped, the electric valve is set to an intermediate opening between the fully closed state and the fully opened state. It is characterized by having a part.
【００１２】この請求項３の発明では、上記電動弁制御
部は、圧縮機の停止時に上記ガス側電動弁を中間開度に
するから、圧縮機の前後での圧力差の解消(均圧)が速や
かになされ、かつ、均圧時に発生する音(均圧音)を低減
できる。According to the third aspect of the present invention, the electric valve control section sets the gas-side electric valve to an intermediate opening when the compressor is stopped, so that the pressure difference between before and after the compressor is eliminated (equalization). And the sound (equalization sound) generated at the time of pressure equalization can be reduced.
【００１３】また、請求項４の発明は、請求項１乃至３
のいずれか１つに記載の空気調和機において、使用冷媒
が、Ｒ４１０Ａ，ＨＦＣ３２，ＨＦＣ３２とＨＦＣ１２
５との混合冷媒でＨＦＣ３２が５０重量％以上の冷媒，
ＨＣ冷媒のいずれか１つであることを特徴としている。Further, the invention of claim 4 provides the invention according to claims 1 to 3
In the air conditioner according to any one of the above, the refrigerant used is R410A, HFC32, HFC32 and HFC12.
HFC32 is a refrigerant mixture of 50% by weight or more in a refrigerant mixture with
It is characterized by being one of HC refrigerants.
【００１４】この請求項４の発明では、Ｒ４１０Ａ，Ｈ
ＦＣ３２，ＨＦＣ３２とＨＦＣ１２５との混合冷媒，Ｈ
Ｃ冷媒のいずれか１つの冷媒を使用するので、従来冷媒
(Ｒ２２)を使用した場合に比べて、圧損を少なくでき、
上記ガス側電動弁を設けたことによる圧損を相殺でき、
効率向上を図れる。According to the present invention, R410A, H
FC32, mixed refrigerant of HFC32 and HFC125, H
Since any one of the C refrigerants is used, the conventional refrigerant
Pressure loss can be reduced compared to when (R22) is used,
Pressure loss due to the provision of the gas side motorized valve can be offset,
Efficiency can be improved.
【００１５】[0015]
【発明の実施の形態】以下、この発明を図示の実施の形
態により詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
【００１６】図１に、この発明の空気調和機の実施の形
態の冷媒回路をしめす。この空気調和機は、圧縮機１
と、四路切換弁２と、室外熱交換器３と、この室外熱交
換器３を２つの室内熱交換器１２，１３に接続する液側
分岐路４を備える。この分岐路４は、室内熱交換器１２
に接続された分岐枝４Ａと室内熱交換器１３に接続され
た分岐枝４Ｂを有し、分岐枝４Ａには膨張弁５が接続さ
れ、分岐枝４Ｂには膨張弁６が接続されている。また、
この分岐枝４Ａは、膨張弁５と室内熱交換器１２との間
に接続されている継手７，１０を有し、分岐枝４Ｂは膨
張弁６と室内熱交換器１３との間に接続されている継手
８，１１を有する。FIG. 1 shows a refrigerant circuit according to an embodiment of the air conditioner of the present invention. This air conditioner has a compressor 1
, A four-way switching valve 2, an outdoor heat exchanger 3, and a liquid-side branch passage 4 that connects the outdoor heat exchanger 3 to two indoor heat exchangers 12 and 13. This branch path 4 is connected to the indoor heat exchanger 12
And a branch 4B connected to the indoor heat exchanger 13. An expansion valve 5 is connected to the branch 4A, and an expansion valve 6 is connected to the branch 4B. Also,
The branch 4A has joints 7, 10 connected between the expansion valve 5 and the indoor heat exchanger 12, and the branch 4B is connected between the expansion valve 6 and the indoor heat exchanger 13. Joints 8 and 11 are provided.
【００１７】そして、上記室内熱交換器１２と１３は、
ガス側分岐路９でもって、四路切換弁２に接続されてい
る。このガス側分岐路９は、分岐枝９Ａが室内熱交換器
１２とガス側電動弁１８を接続しており、分岐枝９Ｂが
室内熱交換器１３とガス側電動弁２０を接続している。
そして、この分岐枝９Ａは継手１４，１６を有し、分岐
枝９Ｂは継手１５，１７を有している。なお、図には示
さないが、上記室内熱交換器１２と１３は、それぞれ、
別の室に配置されている。そして、圧縮機１の吸入側は
アキュムレータ２１を介して上記四路切換弁２に接続さ
れている。The indoor heat exchangers 12 and 13 are:
The four-way switching valve 2 is connected by a gas-side branch passage 9. In the gas-side branch passage 9, a branch 9A connects the indoor heat exchanger 12 and the gas-side electric valve 18, and a branch 9B connects the indoor heat exchanger 13 and the gas-side electric valve 20.
The branch 9A has joints 14 and 16, and the branch 9B has joints 15 and 17. Although not shown in the figure, the indoor heat exchangers 12 and 13 are respectively
Located in another room. The suction side of the compressor 1 is connected to the four-way switching valve 2 via an accumulator 21.
【００１８】また、この実施形態は、上記ガス側電動弁
１８および２０の開度を制御するガス側電動弁制御部１
００を備えている。In this embodiment, the gas-side motorized valve control section 1 controls the opening of the gas-side motorized valves 18 and 20.
00 is provided.
【００１９】上記構成の空気調和機では、四路切換弁２
が実線経路を連通させているときには、圧縮機１が吐出
した冷媒は室外熱交換器３を経由して液側分岐路４に達
し、この液側分岐路４で、分岐枝４Ａと分岐枝４Ｂとに
分かれ、膨張弁５と膨張弁６に導入される。そして、こ
の膨張弁５を経て膨張した冷媒は、継手７，１０を通っ
て室内熱交換器１２に導入され、この室内熱交換器１２
で蒸発して室内を冷房する。また、膨張弁６を経て膨張
した冷媒は、継手８，１１を経て室内熱交換器１３に導
入され、この室内熱交換器１３で蒸発して別の室内を冷
房する。In the air conditioner having the above structure, the four-way switching valve 2
Is connected to the solid line path, the refrigerant discharged from the compressor 1 reaches the liquid side branch path 4 via the outdoor heat exchanger 3, where the branch side 4A and the branch side 4B And introduced into the expansion valve 5 and the expansion valve 6. Then, the refrigerant expanded through the expansion valve 5 is introduced into the indoor heat exchanger 12 through the joints 7 and 10, and the indoor heat exchanger 12
To evaporate and cool the room. The refrigerant expanded through the expansion valve 6 is introduced into the indoor heat exchanger 13 through the joints 8 and 11, and is evaporated in the indoor heat exchanger 13 to cool another room.
【００２０】一方、四路切換弁２が破線経路を連通させ
ているときには、圧縮機１が吐出した冷媒は上記ガス側
分岐路９で分岐して、分岐枝９Ａ，９Ｂに導入され、ガ
ス側電動弁１８，２０を経由して、室内熱交換器１２，
１３に達する。この室内熱交換器１２，１３に導入され
た冷媒は、それぞれ、凝縮されて各室を暖房し、液側分
岐路４の膨張弁５，６で膨張してから合流して室外熱交
換器３で蒸発してから圧縮機１に戻る。On the other hand, when the four-way switching valve 2 communicates with the dashed line, the refrigerant discharged from the compressor 1 branches off in the gas-side branch passage 9 and is introduced into the branch branches 9A and 9B, where the refrigerant flows into the gas-side branch. Via the electric valves 18 and 20, the indoor heat exchangers 12 and
Reach 13. The refrigerant introduced into the indoor heat exchangers 12 and 13 is condensed and heats the respective rooms, expands at the expansion valves 5 and 6 of the liquid side branch passage 4 and then joins to join the outdoor heat exchangers 3 and 13. And returns to the compressor 1.
【００２１】ところで、暖房時において、室内熱交換器
１２が配置されている室は暖房の必要があるが、室内熱
交換器１３が配置されている室は暖房の必要が無い場合
には、電動弁１８を全開にする一方、電動弁２０を全閉
にする。これにより、圧縮機１から室内熱交換器１２に
冷媒を導入する一方、圧縮機１から室内熱交換器１３に
冷媒を導入しないようにできる。したがって、暖房動作
が不要な室内熱交換器１３に冷媒を無駄に流さないよう
にして、エネルギー損失を低減し、効率向上を達成でき
る。また、暖房動作が不要な室内熱交換器１３に無駄な
冷媒を流さないから、暖房停止部屋での冷媒通過音を無
くして、騒音を低減できる。When the room in which the indoor heat exchanger 12 is disposed needs to be heated during heating, but the room in which the indoor heat exchanger 13 is disposed does not need to be heated, The valve 18 is fully opened, while the electric valve 20 is fully closed. This allows the refrigerant to be introduced from the compressor 1 to the indoor heat exchanger 12 while the refrigerant is not introduced from the compressor 1 to the indoor heat exchanger 13. Therefore, it is possible to prevent the refrigerant from being wastefully flown to the indoor heat exchanger 13 that does not require a heating operation, to reduce energy loss, and to improve efficiency. In addition, since the useless refrigerant is not flown to the indoor heat exchanger 13 that does not require a heating operation, noise passing through the refrigerant in the heating stop room can be eliminated, and noise can be reduced.
【００２２】また、暖房時において、前記とは逆に、室
内熱交換器１３が暖房する必要があり、室内熱交換器１
２が暖房する必要が無い場合には、電動弁２０を全開に
して電動弁１８を全閉にする。これにより、暖房動作が
不要な室内熱交換器１２に冷媒を無駄に流さないように
して、エネルギー損失を低減し、効率向上を達成でき
る。On the other hand, at the time of heating, the indoor heat exchanger 13 needs to be heated,
When it is not necessary to heat 2, the electric valve 20 is fully opened and the electric valve 18 is fully closed. Thereby, it is possible to prevent the refrigerant from being wastefully flown to the indoor heat exchanger 12 that does not require a heating operation, to reduce energy loss, and to improve efficiency.
【００２３】このように、暖房動作が不必要な室内熱交
換器１２または１３の上流でガス側電動弁１８または２
０を全閉にすることで、冷媒の無駄な循環をなくして、
エネルギー損失を低減して、効率を向上させることがで
きる。As described above, the gas side motorized valve 18 or 2 upstream of the indoor heat exchanger 12 or 13 which does not require a heating operation.
By completely closing 0, wasteful circulation of refrigerant is eliminated,
Energy loss can be reduced and efficiency can be improved.
【００２４】また、この実施の形態では、圧縮機１が停
止するときに、上記ガス側電動弁制御部１００によっ
て、ガス側電動弁１８および２０を全閉と全開の中間の
開度にする。これにより、停止時に、圧縮機１の前後で
の均圧を速やかに行えると共に、この均圧時の均圧音を
小さくして、騒音を低減できる。In this embodiment, when the compressor 1 is stopped, the gas-side electric valve control unit 100 sets the gas-side electric valves 18 and 20 to an intermediate opening between the fully closed state and the fully opened state. Thereby, at the time of stoppage, the pressure equalization before and after the compressor 1 can be quickly performed, and the noise of the pressure equalization at the time of the pressure equalization can be reduced to reduce the noise.
【００２５】なお、上記実施形態で、冷媒として、Ｒ４
１０Ａ，ＨＦＣ３２，ＨＦＣ３２とＨＦＣ１２５との混
合冷媒でＨＦＣ３２が５０重量％以上の冷媒，ＨＣ冷媒
のいずれか１つの冷媒を使用することによって、従来冷
媒(Ｒ２２)を使用した場合に比べて、圧損を少なくで
き、上記ガス側電動弁１８，２０を設けたことによる圧
損を相殺でき、効率向上を図れる。また、上記実施形態
では、ガス側分岐路９の分岐枝９Ａと９Ｂの両方にガス
側電動弁を設けたが、暖房運転が常に必要とされる側の
室に室内熱交換器１２が配置されている場合には、分岐
枝９Ａにはガス側電動弁を接続しないようにすれば、コ
ストダウンを図れる。また、上記実施形態では、２つの
室内熱交換器１２，１３を備えたが、３つ以上の室内熱
交換器を備えて、３室以上の部屋を空気調和する場合に
も本発明を適用できることは言うまでもない。In the above embodiment, R4 is used as the refrigerant.
10A, HFC32, a mixed refrigerant of HFC32 and HFC125, HFC32 using 50% by weight or more of any one of the refrigerant and the HC refrigerant, thereby reducing the pressure loss as compared with the case where the conventional refrigerant (R22) is used. Pressure loss due to the provision of the gas-side electric valves 18 and 20 can be offset, and efficiency can be improved. Further, in the above-described embodiment, the gas-side electric valves are provided on both of the branch branches 9A and 9B of the gas-side branch passage 9, but the indoor heat exchanger 12 is disposed in the room on which the heating operation is always required. In this case, the cost can be reduced by not connecting the gas-side electric valve to the branch 9A. In the above embodiment, two indoor heat exchangers 12 and 13 are provided. However, the present invention can be applied to a case where three or more indoor heat exchangers are provided and three or more rooms are air-conditioned. Needless to say.
【００２６】[0026]
【発明の効果】以上より明らかなように、請求項１の発
明の空気調和機は、圧縮機と、室外熱交換器と、複数の
室内熱交換器と、室外熱交換器を複数の室内熱交換器そ
れぞれに接続する液側分岐路と、液側分岐路に設けられ
た複数の膨張機構と、複数の室内熱交換器それぞれを圧
縮機に接続するガス側分岐路とを備え、ガス側分岐路の
少なくとも１つの分岐枝に電動弁を設けた。As is apparent from the above description, the air conditioner according to the first aspect of the present invention comprises a compressor, an outdoor heat exchanger, a plurality of indoor heat exchangers, and a plurality of indoor heat exchangers. A liquid-side branch connected to each exchanger; a plurality of expansion mechanisms provided in the liquid-side branch; and a gas-side branch connecting each of the plurality of indoor heat exchangers to a compressor. Motorized valves were provided on at least one branch of the road.
【００２７】この請求項１の発明では、暖房運転時に、
上記電動弁を閉じることによって、この電動弁が接続さ
れた分岐枝に接続されている室内熱交換器に冷媒を供給
しないようにできる。したがって、暖房する必要のない
室の室内熱交換器への冷媒供給を止めることができ、エ
ネルギー損失を削減できる。According to the first aspect of the present invention, during the heating operation,
By closing the electric valve, the refrigerant can be prevented from being supplied to the indoor heat exchanger connected to the branch to which the electric valve is connected. Therefore, the supply of the refrigerant to the indoor heat exchanger of the room that does not need to be heated can be stopped, and the energy loss can be reduced.
【００２８】また、請求項２の発明は、請求項１に記載
の空気調和機において、ガス側分岐路の少なくとも１つ
の分岐枝に電動弁を設けていない。According to a second aspect of the present invention, in the air conditioner according to the first aspect, an electric valve is not provided on at least one branch of the gas side branch.
【００２９】この請求項２の発明では、暖房運転が必ず
必要となる室に配置される室内熱交換器に接続されてい
る分岐枝に電動弁を設けないようにして、コストダウン
を図れる。According to the second aspect of the present invention, the cost can be reduced by not providing a motor-operated valve on the branch connected to the indoor heat exchanger disposed in the room where the heating operation is necessarily required.
【００３０】また、請求項３の発明は、請求項１または
２に記載の空気調和機において、圧縮機の停止時に、電
動弁を全閉と全開の中間開度に設定する電動弁制御部を
備えた。According to a third aspect of the present invention, in the air conditioner according to the first or second aspect, when the compressor is stopped, the electric valve control unit sets the electric valve to an intermediate opening between the fully closed state and the fully opened state. Equipped.
【００３１】この請求項３の発明では、上記電動弁制御
部は、圧縮機の停止時に上記ガス側電動弁を中間開度に
するから、圧縮機の前後での圧力差の解消(均圧)が速や
かになされ、かつ、均圧時に発生する音(均圧音)を低減
できる。According to the third aspect of the present invention, the motor-operated valve controller sets the gas-side motor-operated valve to an intermediate opening when the compressor is stopped, so that the pressure difference before and after the compressor is eliminated (equalization). And the sound (equalization sound) generated at the time of pressure equalization can be reduced.
【００３２】また、請求項４の発明は、Ｒ４１０Ａ，Ｈ
ＦＣ３２，ＨＦＣ３２とＨＦＣ１２５との混合冷媒でＨ
ＦＣ３２が５０重量％以上の冷媒，ＨＣ冷媒のいずれか
１つの冷媒を使用するので、従来冷媒(Ｒ２２)を使用し
た場合に比べて、圧損を少なくでき、上記ガス側電動弁
を設けたことによる圧損を相殺でき、効率向上を図れ
る。The invention according to claim 4 is characterized in that R410A, H410
FC32, mixed refrigerant of HFC32 and HFC125 and H
Since FC32 uses any one of a refrigerant of 50% by weight or more and a HC refrigerant, the pressure loss can be reduced as compared with the case where the conventional refrigerant (R22) is used, and the gas-side electric valve is provided. Pressure loss can be offset, and efficiency can be improved.
【図１】 この発明の空気調和機の実施の形態の冷媒回
路図である。FIG. 1 is a refrigerant circuit diagram of an embodiment of an air conditioner of the present invention.
【図２】 従来の空気調和機の冷媒回路図である。FIG. 2 is a refrigerant circuit diagram of a conventional air conditioner.
１…圧縮機、２…四路切換弁、３…室外熱交換器、４…
液側分岐路、４Ａ，４Ｂ…分岐枝、５，６…膨張弁、９
…ガス側分岐路、９Ａ，９Ｂ…分岐枝、７，８，１０，
１１…継手、１２，１３…室内熱交換器、１４，１５，
１６，１７…継手、１８，２０…ガス側電動弁、２１…
アキュムレータ、１００…ガス側電動弁制御部。DESCRIPTION OF SYMBOLS 1 ... Compressor, 2 ... Four-way switching valve, 3 ... Outdoor heat exchanger, 4 ...
Liquid side branch passages, 4A, 4B ... branch branches, 5, 6 ... expansion valves, 9
... gas side branch, 9A, 9B ... branch, 7, 8, 10,
11 ... fittings, 12, 13 ... indoor heat exchangers, 14, 15,
16, 17 ... joint, 18, 20 ... gas side motorized valve, 21 ...
Accumulator, 100 ... gas side motorized valve control unit.
Claims (4)
数の室内熱交換器(１２，１３)と、 上記室外熱交換器(３)を上記複数の室内熱交換器(１
２，１３)それぞれに接続する液側分岐路(４)と、 上記液側分岐路(４)に設けられた複数の膨張機構(５，
６)と、 上記複数の室内熱交換器(１２，１３)それぞれを上記圧
縮機(１)に接続するガス側分岐路(９)とを備え、 上記ガス側分岐路(９)の少なくとも１つの分岐枝(９
Ａ，９Ｂ)に電動弁(１８，２０)を設けたことを特徴と
する空気調和機。1. A compressor (1), an outdoor heat exchanger (3), a plurality of indoor heat exchangers (12, 13), and the outdoor heat exchanger (3) is connected to the plurality of indoor heat exchangers. (1
2, 13) and a plurality of expansion mechanisms (5, 5) provided in the liquid side branch (4).
6), and a gas-side branch (9) connecting each of the plurality of indoor heat exchangers (12, 13) to the compressor (1), and at least one of the gas-side branches (9). Branch (9
A, 9B) is provided with an electric valve (18, 20).
設けていないことを特徴とする空気調和機。2. The air conditioner according to claim 1, wherein an electric valve is not provided in at least one branch of the gas-side branch.
おいて、 上記圧縮機(１)の停止時に、上記電動弁(１８，２０)を
全閉と全開の中間開度に設定する電動弁制御部(１００)
を備えたことを特徴とする空気調和機。3. The air conditioner according to claim 1, wherein when the compressor (1) is stopped, the electric valve (18, 20) is set to an intermediate opening between a fully closed state and a fully opened state. Control unit (100)
An air conditioner comprising:
空気調和機において、 使用冷媒が、Ｒ４１０Ａ，ＨＦＣ３２，ＨＦＣ３２とＨ
ＦＣ１２５との混合冷媒でＨＦＣ３２が５０重量％以上
の冷媒，ＨＣ冷媒のいずれか１つであることを特徴とす
る空気調和機。4. The air conditioner according to claim 1, wherein the refrigerant used is R410A, HFC32, HFC32 and HFC32.
An air conditioner characterized in that HFC32 is one of a refrigerant of 50% by weight or more and an HC refrigerant in a refrigerant mixture with FC125.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35936897A JPH11190563A (en) | 1997-12-26 | 1997-12-26 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35936897A JPH11190563A (en) | 1997-12-26 | 1997-12-26 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11190563A true JPH11190563A (en) | 1999-07-13 |
Family
ID=18464152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35936897A Pending JPH11190563A (en) | 1997-12-26 | 1997-12-26 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11190563A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004219059A (en) * | 2003-01-13 | 2004-08-05 | Lg Electronics Inc | Multi-air conditioner |
-
1997
- 1997-12-26 JP JP35936897A patent/JPH11190563A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004219059A (en) * | 2003-01-13 | 2004-08-05 | Lg Electronics Inc | Multi-air conditioner |
| JP4699689B2 (en) * | 2003-01-13 | 2011-06-15 | エルジー エレクトロニクス インコーポレイティド | Multi air conditioner |
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