JPH08210718A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH08210718A JPH08210718A JP22054895A JP22054895A JPH08210718A JP H08210718 A JPH08210718 A JP H08210718A JP 22054895 A JP22054895 A JP 22054895A JP 22054895 A JP22054895 A JP 22054895A JP H08210718 A JPH08210718 A JP H08210718A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- heat exchanger
- air conditioner
- outdoor heat
- 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.)
- Pending
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、室内熱交換器及び室外
熱交換器を有する冷媒回路に冷媒を循環させて冷房及び
暖房運転を行う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 which performs cooling and heating operations by circulating a refrigerant in a refrigerant circuit having an indoor heat exchanger and an outdoor heat exchanger.
【０００２】[0002]
【従来の技術】圧縮機、室内熱交換器、減圧装置、室外
熱交換器を有する冷媒回路に混合冷媒を循環させて冷房
運転及び暖房運転を行う空気調和機（冷暖房装置）とし
て、実開昭６３−１９４２２１号公報に開示されている
技術が公知である。この公報に開示されている冷暖房装
置には冷房時と暖房時とで室外熱交換器を通過する空気
の流れ方向を逆転するようにその回転方向が正逆転可能
な構成が開示されている。2. Description of the Related Art As an air conditioner (cooling and heating device) which performs a cooling operation and a heating operation by circulating a mixed refrigerant in a refrigerant circuit having a compressor, an indoor heat exchanger, a pressure reducing device, and an outdoor heat exchanger, it is practically used. The technique disclosed in Japanese Patent Laid-Open No. 63-194221 is known. The air conditioner disclosed in this publication discloses a configuration in which the direction of rotation of the air can be reversed so as to reverse the flow direction of air passing through the outdoor heat exchanger during cooling and during heating.
【０００３】[0003]
【発明が解決しようとする課題】ところが、この上述の
従来の空気調和機では、室外熱交換器における冷媒の流
れ方向との関係において冷媒と熱交換する空気の流れ方
向を冷房運転時、暖房運転時共に冷媒の流れ方向に対し
て、対向流にするものでない。However, in the above-described conventional air conditioner, the flow direction of the air that exchanges heat with the refrigerant in the relationship with the flow direction of the refrigerant in the outdoor heat exchanger is the cooling operation or the heating operation. At any given time, the flow does not face the flow direction of the refrigerant.
【０００４】また、別の従来の空気調和機では、室外熱
交換器に外気を送風する送風機は一方向にのみ回転する
ものであり冷房時には冷媒の流れと空気の流れは対向流
になるものの、暖房時には冷媒の流れと空気の流れは平
行流（同一方向への流れ）になる。In another conventional air conditioner, the blower for blowing the outside air to the outdoor heat exchanger rotates only in one direction, and the refrigerant flow and the air flow are counterflows during cooling. During heating, the flow of the refrigerant and the flow of the air are parallel flows (flows in the same direction).
【０００５】ところで、近年においては、オゾン層の破
壊を防止する目的等から、特開昭５４ー２５６１号公報
に開示されているように、問題となる塩素を含む冷媒を
用いず、問題のない冷媒を混ぜ合わせて同等の能力が得
られるようにした混合冷媒（冷媒Ｒ３２、Ｒ１２５、Ｒ
１３４ａを２３：２５：５２の重量比で混ぜた非共沸混
合冷媒、または冷媒Ｒ３２、Ｒ１２５を５０：５０の重
量比で混ぜた疑似共沸混合冷媒、さらにはこれらと同等
の重量比で混ぜた混合冷媒など）を用いたものが知られ
ている。By the way, in recent years, for the purpose of preventing the destruction of the ozone layer and the like, as disclosed in Japanese Patent Application Laid-Open No. 54-2561, there is no problem because a refrigerant containing chlorine, which is a problem, is not used. Mixed refrigerants (refrigerants R32, R125, R
134a is a non-azeotropic mixed refrigerant in which it is mixed in a weight ratio of 23:25:52, or a pseudo-azeotropic mixed refrigerant in which refrigerants R32 and R125 are mixed in a weight ratio of 50:50, and is also mixed in a weight ratio equivalent to these. Mixed refrigerants, etc.) are known.
【０００６】かかる混合冷媒は、図５に示すように、混
ぜ合わせる冷媒の特性の違いからその凝縮過程及び蒸発
過程では、圧力一定でも温度が変化する（温度グライ
ド）。したがって、例えば上記したような非共沸混合冷
媒を用い室外熱交換器が凝縮器として作用する場合に
は、冷媒の入口温度の方が高く、出口側温度の方が低く
なり、入口と出口とでは例えば約６度の温度差が生じる
場合もある。尚、この温度差は混ぜ合わせる冷媒によっ
て異なる。As shown in FIG. 5, the temperature of the mixed refrigerant changes in the condensation process and the evaporation process even if the pressure is constant (temperature glide) due to the difference in the characteristics of the mixed refrigerant. Therefore, for example, when the outdoor heat exchanger using a non-azeotropic mixed refrigerant as described above acts as a condenser, the inlet temperature of the refrigerant is higher, the outlet side temperature is lower, the inlet and the outlet Then, for example, a temperature difference of about 6 degrees may occur. It should be noted that this temperature difference differs depending on the mixed refrigerant.
【０００７】このような混合冷媒を用いた空冷の室外熱
交換器において、冷媒の流れに対して平行（同一方向
に）熱交換用の空気を流したのでは、空気の温度変化と
冷媒の温度変化とが相反する方向になり、冷房運転時に
は室外熱交換器における熱交換量の増加が望めない。同
時に暖房運転時には室外熱交換器は蒸発器として作用す
るが、この場合に冷媒の流れ方向に対して平行に熱交換
用の空気を流したのでは、冷媒の入口側が出口側より低
い温度になるために着霜しやすく過冷却度を大きくする
ことができない。In the air-cooled outdoor heat exchanger using such mixed refrigerant, if air for heat exchange is made to flow in parallel (in the same direction) to the flow of the refrigerant, the temperature change of the air and the temperature of the refrigerant The change is in the opposite direction, and an increase in the amount of heat exchange in the outdoor heat exchanger cannot be expected during the cooling operation. At the same time, during the heating operation, the outdoor heat exchanger acts as an evaporator, but in this case, if the air for heat exchange is made to flow in parallel to the flow direction of the refrigerant, the inlet side of the refrigerant will have a lower temperature than the outlet side. Therefore, frost is easily formed and the degree of supercooling cannot be increased.
【０００８】従って、上述した従来の空気調和機におい
ては、冷房の効率と暖房の効率を共に上げることができ
ないという問題がある。Therefore, in the above-mentioned conventional air conditioner, there is a problem that both cooling efficiency and heating efficiency cannot be improved.
【０００９】そこで、本発明は上記課題を解消するため
に、冷房運転時の効率と暖房運転時の効率を共に向上で
きる空気調和機を提供することを目的としている。Therefore, in order to solve the above problems, an object of the present invention is to provide an air conditioner capable of improving both the efficiency during cooling operation and the efficiency during heating operation.
【００１０】[0010]
【課題を解決するための手段】請求項１に記載の発明
は、冷房運転時に凝縮器として作用し、暖房運転時に蒸
発器として作用するように冷媒の流れ方向が切り換えら
れる室外熱交換器に複数の冷媒を混ぜた混合冷媒を循環
させて空気調和運転を可能に成した空気調和機におい
て、室外熱交換器内を流れる冷媒と熱交換される外気の
送風方向が冷媒の流れ方向と対向するように、冷房運転
時と暖房運転時とにおける外気の送風方向を変える制御
部を備えることを特徴とする。According to a first aspect of the present invention, a plurality of outdoor heat exchangers are provided in which the flow direction of the refrigerant is switched so that the refrigerant acts as a condenser during cooling operation and acts as an evaporator during heating operation. In an air conditioner that circulates a mixed refrigerant mixed with the refrigerant described above to enable an air conditioning operation, the blowing direction of the outside air that is heat-exchanged with the refrigerant flowing in the outdoor heat exchanger is opposite to the flowing direction of the refrigerant. In addition, a control unit that changes the blowing direction of the outside air during the cooling operation and the heating operation is provided.
【００１１】請求項１に記載の発明では、制御部は冷房
運転又は暖房運転を検知すると送風用のファンが正転又
は逆転するように送風機に対して指令を与えて、冷房時
には室外熱交換器における冷媒の流れ方向に対して送風
機による空気の流れ方向を対向流とする。暖房時にも室
外熱交換器における冷媒の流れ方向に対し、送風機によ
る空気の流れの方向を対向流とする。これにより、冷房
運転時及び暖房運転時の双方において室外熱交換器での
熱交換量の増加を図って、冷房運転の効率及び暖房運転
の効率を共に向上することができる。According to the first aspect of the present invention, when the control section detects the cooling operation or the heating operation, the control section gives a command to the blower so that the fan for the blower may rotate normally or reversely, and the outdoor heat exchanger at the time of cooling. The flow direction of the air by the blower is the counter flow with respect to the flow direction of the refrigerant in. Even during heating, the flow direction of the air by the blower is set to be the counter flow with respect to the flow direction of the refrigerant in the outdoor heat exchanger. As a result, the amount of heat exchange in the outdoor heat exchanger can be increased during both the cooling operation and the heating operation, and both the cooling operation efficiency and the heating operation efficiency can be improved.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施例図１乃至図
５を参照して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS.
【００１３】図１に示すように、空気調和機は、室外熱
交換器１と室内熱交換器２を備える分離型の空気調和機
であり、室外熱交換器１、圧縮機６、四方弁５、室内熱
交換器２、バルブ４の順序で冷媒管により接続されて冷
媒回路を構成している。As shown in FIG. 1, the air conditioner is a separate type air conditioner having an outdoor heat exchanger 1 and an indoor heat exchanger 2, and includes an outdoor heat exchanger 1, a compressor 6, and a four-way valve 5. The indoor heat exchanger 2 and the valve 4 are connected in this order by a refrigerant pipe to form a refrigerant circuit.
【００１４】室外熱交換器１は送風機７を備えており、
この送風機７は、ＤＣモータ８と、このＤＣモータ８の
回転とともに回転されるファン９を備えている。ＤＣモ
ータ８は制御部１０によって印加される電圧の極性に応
じて正回転又は逆回転されるようになっており、リモコ
ン１１のモード切り換えスイッチが押されると、制御部
１０に、暖房運転又は冷房運転の信号が発せられるよう
になっている。The outdoor heat exchanger 1 is equipped with a blower 7,
The blower 7 includes a DC motor 8 and a fan 9 that rotates with the rotation of the DC motor 8. The DC motor 8 is configured to rotate normally or reversely depending on the polarity of the voltage applied by the control unit 10. When the mode changeover switch of the remote controller 11 is pressed, the control unit 10 is instructed to perform heating operation or cooling operation. A driving signal is emitted.
【００１５】この制御部１０は、冷房運転又は暖房運転
を検知し、各運転モードの場合に室外熱交換器を流れる
冷媒の流れに対して、ここに熱交換のために送風される
外気の流れを常に対向流となるように送風機７のファン
の回転方向を正転又は反転させるように、ＤＣモータ８
を駆動するものである。The control unit 10 detects a cooling operation or a heating operation, and in contrast to the flow of the refrigerant flowing through the outdoor heat exchanger in each operation mode, the flow of the outside air blown for heat exchange there. The DC motor 8 so that the direction of rotation of the fan of the blower 7 is normally or reversely rotated so that the air flows in the opposite direction.
Is to drive.
【００１６】空気調和機の冷媒回路を循環する冷媒とし
ては、高沸点冷媒と低沸点冷媒とからなる非共沸混合冷
媒が用いられる。非共沸混合冷媒としては、たとえばＲ
１３４ａを５２Ｗｔ％、Ｒ１２５を２５Ｗｔ％、Ｒ３２
を２３Ｗｔ％で混合した３種混合冷媒が用いられる。一
般に、Ｒ１３４ａの沸点は−２６度、Ｒ１２５の沸点は
−４８度、Ｒ３２の沸点は−５２度である。このような
組成比の３種混合冷媒では、一般的に、蒸発時には沸点
の低いＲ３２やＲ１２５から先に蒸発しやすく、凝縮時
には沸点の低いＲ３２やＲ１２５から凝縮しやすいため
に、熱交換器内で組成比が変化して、図５に示すよう
に、温度グライドＴが生じる。すなわち、冷媒温度は、
凝縮器として作用する室外熱交換器の入口側が最も温度
が高く、出口側ほど温度が低くなる。As the refrigerant circulating in the refrigerant circuit of the air conditioner, a non-azeotropic mixed refrigerant composed of a high boiling point refrigerant and a low boiling point refrigerant is used. As the non-azeotropic mixed refrigerant, for example, R
52wt% for 134a, 25wt% for R125, R32
Is used at a rate of 23 Wt%. Generally, R134a has a boiling point of -26 degrees, R125 has a boiling point of -48 degrees, and R32 has a boiling point of -52 degrees. In the three-type mixed refrigerant having such a composition ratio, generally, R32 and R125 having a low boiling point are easily vaporized first during evaporation, and R32 and R125 having a low boiling point are easily condensed at the time of condensation. The composition ratio is changed by, and a temperature glide T is generated as shown in FIG. That is, the refrigerant temperature is
The inlet side of the outdoor heat exchanger acting as a condenser has the highest temperature, and the outlet side has a lower temperature.
【００１７】また、室外熱交換器が蒸発器として作用す
る場合には、入口側温度が最も低くなり、出口側ほど温
度が高くなる。When the outdoor heat exchanger acts as an evaporator, the temperature on the inlet side becomes the lowest and the temperature becomes higher on the outlet side.
【００１８】同様にＲ１２５を５０Ｗt ％、Ｒ３２を５
０Ｗt ％で混合した混合冷媒を用いた場合には、前記し
たようにＲ１２５の沸点は摂氏−４８度、Ｒ３２の沸点
は摂氏−５２度である。このような組成の混合冷媒でも
沸点の低いＲ３２がＲ１２５より気化しやすく、同様に
凝縮時には沸点の低いＲ３２から凝縮しやすいために、
熱交換器内で組成比が変化して、図５に示すように、温
度グライドＴが生じる。すなわち、冷媒温度は、凝縮器
として作用する室外熱交換器の入口側が最も温度が高
く、出口側ほど温度が低くなる。Similarly, R125 is 50 Wt% and R32 is 5
When the mixed refrigerant mixed at 0 wt% is used, the boiling point of R125 is -48 degrees Celsius and the boiling point of R32 is -52 degrees Celsius as described above. Even with a mixed refrigerant having such a composition, R32 having a low boiling point is more easily vaporized than R125, and similarly, R32 having a low boiling point is easily condensed at the time of condensation.
The composition ratio changes in the heat exchanger, resulting in a temperature glide T as shown in FIG. In other words, the refrigerant temperature is highest on the inlet side of the outdoor heat exchanger acting as a condenser, and lower on the outlet side.
【００１９】また、室外熱交換器が蒸発器として作用す
る場合にも、同様に入口側温度が最も低くなり、出口側
ほど温度が高くなる。Also, when the outdoor heat exchanger acts as an evaporator, the temperature on the inlet side becomes the lowest and the temperature becomes higher on the outlet side.
【００２０】従って、特性の異なる冷媒を混ぜている以
上その特性の違いによって、熱交換器内にはいずれかの
冷媒が液冷媒として残りやすくなり熱交換器の入り口側
と出口側との間に温度差が生じる。Therefore, as long as the refrigerants having different characteristics are mixed, due to the difference in the characteristics, one of the refrigerants is likely to remain as a liquid refrigerant in the heat exchanger, so that it is between the inlet side and the outlet side of the heat exchanger. There is a temperature difference.
【００２１】室外熱交換器１は、図２に示すように３層
構造になっていて、熱交換部Ａ，Ｂ，Ｃが重ねて構成さ
れており、図１に示すように熱交換部Ａ、Ｂ、Ｃの順に
冷媒管Ｒが直列に通っている。The outdoor heat exchanger 1 has a three-layer structure as shown in FIG. 2 and is constructed by stacking heat exchange parts A, B and C. As shown in FIG. , B, and C, the refrigerant pipe R passes in series.
【００２２】室外熱交換器１は図３に示すように、３つ
の熱交換部Ａ，Ｂ，Ｃには、複数の冷媒管Ｒに分配され
ており、熱交換効率の向上が更に図られている。As shown in FIG. 3, the outdoor heat exchanger 1 is divided into a plurality of refrigerant pipes R in the three heat exchange parts A, B and C to further improve the heat exchange efficiency. There is.
【００２３】次に、本実施例の作用を説明する。 冷房運転時 図１に示すように、空気調和機の冷媒回路においては、
冷房運転時には、四方弁５が実線で示すように位置し、
冷媒が圧縮機６、四方弁５、室外熱交換器１、減圧手段
である電磁バルブ４、室内熱交換器２、四方弁５の順で
循環される。Next, the operation of this embodiment will be described. During cooling operation As shown in FIG. 1, in the refrigerant circuit of the air conditioner,
During cooling operation, the four-way valve 5 is located as shown by the solid line,
The refrigerant is circulated in the order of the compressor 6, the four-way valve 5, the outdoor heat exchanger 1, the electromagnetic valve 4 as the pressure reducing means, the indoor heat exchanger 2, and the four-way valve 5.
【００２４】冷房運転時においては、図１に示すように
室外熱交換器１では全体的に冷媒が熱交換部Ａ，Ｂ，Ｃ
の順で流れ、実線矢印Ｃ１で示す方向の流れを生じる。
この冷房運転時において、制御部１０は、室内ユニット
に設けられたリモコン１１からの冷房運転の指令を受け
ると、同時にモータ８に駆動信号を発し、モータ８を正
回転させ、外気を図１中に実線矢印Ｃ２で示す方向に送
風し、図４に示すように空気の流れ方向は熱交換部Ｃ，
Ｂ，Ａ室外のの順で流れる。つまり、熱交換部Ａ、Ｂ、
Ｃの順序で流れる冷媒の流れ方向Ｃ１に対して、送風機
により熱交換器１に送風される空気の流れ方向Ｃ２は対
向流（カウンターフロー）である。During the cooling operation, as shown in FIG. 1, in the outdoor heat exchanger 1, the refrigerant is wholly the heat exchange parts A, B and C.
, And the flow in the direction indicated by the solid arrow C1 occurs.
During the cooling operation, when the control unit 10 receives a command for the cooling operation from the remote controller 11 provided in the indoor unit, at the same time, it issues a drive signal to the motor 8 to rotate the motor 8 in the normal direction to remove outside air in FIG. To the heat exchange section C, as shown in FIG.
Flows in the order of B and A outdoors. That is, the heat exchange parts A, B,
With respect to the flow direction C1 of the refrigerant flowing in the order of C, the flow direction C2 of the air blown to the heat exchanger 1 by the blower is a counter flow.
【００２５】このように、冷房運転時における室外熱交
換器の冷媒流れ方向と熱交換用の外気流れ方向を対向流
とすることにより、冷媒の温度勾配を略平行にすること
ができるので、全体としての熱交換効率を向上させるこ
とができる。As described above, by making the refrigerant flow direction of the outdoor heat exchanger and the outdoor air flow direction for heat exchange counterflow during the cooling operation, the temperature gradient of the refrigerant can be made substantially parallel. The heat exchange efficiency can be improved.
【００２６】暖房運転時 一方、暖房時には、図１に示すように四方弁５が破線で
示すように位置し、冷媒が圧縮機６、四方弁５、室内熱
交換器２、電磁バルブ４、室外熱交換器１、そして四方
弁５の順序で循環される。During heating operation On the other hand, during heating, the four-way valve 5 is positioned as shown by the broken line as shown in FIG. 1, and the refrigerant is the compressor 6, the four-way valve 5, the indoor heat exchanger 2, the electromagnetic valve 4, and the outdoor. The heat exchanger 1 and the four-way valve 5 are circulated in this order.
【００２７】暖房運転時においては、図１及び図４に示
すように、室外熱交換器１では全体的に冷媒が熱交換部
Ｃ、Ｂ、Ａの順序で実線矢印Ｗ１で示す方向に流れ、熱
交換用の外気は熱交換部Ａ、Ｂ、Ｃの順序で流れる。こ
の暖房運転時において、制御部１０は、モータ８を正回
転させ熱交換用の外気を破線矢印Ｗ２で示す方向に送風
する。図４に示すように、外気風は、熱交換器Ａ，Ｂ，
Ｃの順で流れ冷媒の流れ移動方向Ｗ１と空気の流れ方向
Ｗ２は対向流（カウンターフロー）となる。During the heating operation, as shown in FIGS. 1 and 4, in the outdoor heat exchanger 1, the refrigerant generally flows in the order of the heat exchange parts C, B and A in the direction indicated by the solid arrow W1, The outside air for heat exchange flows in the order of the heat exchange parts A, B, and C. During this heating operation, the control unit 10 rotates the motor 8 in the forward direction to blow the outside air for heat exchange in the direction indicated by the broken line arrow W2. As shown in FIG. 4, the outside air is heated by the heat exchangers A, B,
In the order of C, the flow direction W1 of the refrigerant and the flow direction W2 of the air are counter flows.
【００２８】このように、暖房運転時における室外熱交
換器の冷媒流れ方向と熱交換用の外気流れ方向を対向流
とすることにより、冷媒の温度勾配が平行にすることが
できるので全体として熱交換効率を向上させることがで
きる。In this way, by making the flow direction of the refrigerant in the outdoor heat exchanger and the flow direction of the outside air for heat exchange in the heating operation counter-current, the temperature gradient of the refrigerant can be made parallel, so that the heat as a whole can be reduced. The exchange efficiency can be improved.
【００２９】上述のように、冷房運転時と暖房運転時の
いずれにおいても冷媒の流れ方向と空気の流れ方向は対
向流であるため、冷媒の流れ方向と空気の流れ方向が並
流となる場合に比べて、室外熱交換器１における熱交換
量を向上させることができる。As described above, in both the cooling operation and the heating operation, the refrigerant flow direction and the air flow direction are counter flows, so that the refrigerant flow direction and the air flow direction are co-current. The heat exchange amount in the outdoor heat exchanger 1 can be improved as compared with.
【００３０】また、図５における圧縮機入力ＱＧで示す
ように、室外熱交換器１における熱交換効率を高めるこ
とによって圧縮機６の負荷を軽減させることができる。Further, as shown by the compressor input QG in FIG. 5, the load on the compressor 6 can be reduced by increasing the heat exchange efficiency in the outdoor heat exchanger 1.
【００３１】ところで、本発明は、上述した実施例に限
らず本発明の要旨を逸脱しない範囲で種々の変形をする
ことができる。例えば、送風機７ののモータは、モータ
のファンを逆転可能な構成であればＤＣモータに限らず
三相モータや単相モータ等を用いても同様な効果を得る
ことができる。By the way, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. For example, the motor of the blower 7 is not limited to the DC motor as long as the fan of the motor can be rotated in the reverse direction, and a similar effect can be obtained by using a three-phase motor or a single-phase motor.
【００３２】[0032]
【発明の効果】以上説明したように、請求項１に記載の
発明では、制御部が冷房運転又は暖房運転を検知すると
ファンが正転又は逆転するように送風機を制御し、冷媒
の流れ方向と送風機による熱交換用の空気の流れ方向を
対向流にする。これにより、冷房時及び暖房時の両方に
おける室外熱交換器での熱交換効率の向上を図って、冷
房の効率と暖房の効率を向上させることができる。As described above, according to the first aspect of the invention, when the control unit detects the cooling operation or the heating operation, the fan is controlled so that the fan rotates in the normal direction or the reverse direction, and the flow direction of the refrigerant is changed. The direction of flow of air for heat exchange by the blower is set to counterflow. As a result, the efficiency of heat exchange in the outdoor heat exchanger can be improved both during cooling and during heating, and the efficiency of cooling and the efficiency of heating can be improved.
【００３３】[0033]
【図１】本発明の実施例にかかる空気調和機の冷媒回路
図である。FIG. 1 is a refrigerant circuit diagram of an air conditioner according to an embodiment of the present invention.
【図２】図１に示す空気調和機の室外機の断面図であ
る。FIG. 2 is a cross-sectional view of an outdoor unit of the air conditioner shown in FIG.
【図３】図２の熱交換器の冷媒管の配管状態を示す側面
図である。FIG. 3 is a side view showing a piping state of a refrigerant pipe of the heat exchanger of FIG.
【図４】冷房時と暖房時における冷媒の流れと空気の流
れを示す図である。FIG. 4 is a diagram showing a refrigerant flow and an air flow during cooling and heating.
【図５】非共沸混合冷媒のモリエル線図である。FIG. 5 is a Mollier diagram of a non-azeotropic mixed refrigerant.
１ 室外熱交換器 ７ 送風機 ８ モータ １０ 制御部 Ｃ１ 冷房時の冷媒の流れ方向 Ｃ２ 冷房時の空気の流れ方向 Ｗ１ 暖房時の冷媒の流れ方向 Ｗ２ 暖房時の空気の流れ方向 1 outdoor heat exchanger 7 blower 8 motor 10 control unit C1 refrigerant flow direction during cooling C2 air flow direction during cooling W1 refrigerant flow direction during heating W2 air flow direction during heating
Claims (1)
運転時に蒸発器として作用するように冷媒の流れ方向が
切り換えられる室外熱交換器に複数の冷媒を混ぜた混合
冷媒を循環させて空気調和運転を可能に成した空気調和
機において、 室外熱交換器内を流れる冷媒と熱交換される外気の送風
方向が冷媒の流れ方向と対向するように、冷房運転時と
暖房運転時とにおける外気の送風方向を変える制御部を
備えることを特徴とする空気調和機。1. An air conditioner in which a mixed refrigerant mixed with a plurality of refrigerants is circulated in an outdoor heat exchanger whose flow direction is switched so as to act as a condenser during cooling operation and as an evaporator during heating operation. In an air conditioner that can be operated, the outside air in the cooling operation and the heating operation is controlled so that the blowing direction of the outside air that is heat-exchanged with the refrigerant flowing in the outdoor heat exchanger is opposite to the flowing direction of the refrigerant. An air conditioner comprising a control unit that changes a blowing direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22054895A JPH08210718A (en) | 1994-11-28 | 1995-08-29 | Air conditioner |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6-293417 | 1994-11-28 | ||
| JP29341794 | 1994-11-28 | ||
| JP22054895A JPH08210718A (en) | 1994-11-28 | 1995-08-29 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08210718A true JPH08210718A (en) | 1996-08-20 |
Family
ID=26523776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22054895A Pending JPH08210718A (en) | 1994-11-28 | 1995-08-29 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08210718A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011112333A (en) * | 2009-11-30 | 2011-06-09 | Mitsubishi Electric Corp | Air conditioner and operation method of the air conditioner |
-
1995
- 1995-08-29 JP JP22054895A patent/JPH08210718A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011112333A (en) * | 2009-11-30 | 2011-06-09 | Mitsubishi Electric Corp | Air conditioner and operation method of the air conditioner |
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