JP2008151351A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce refrigerant flowing noise generated at a part of a dehumidification throttle device in an air conditioner capable of performing a dehumidifying operation for cooling, dehumidifying and heating in a refrigerating cycle. <P>SOLUTION: An indoor heat exchanger constituting the refrigerating cycle is divided, and a two-way valve with a cylindrical flow channel as the dehumidification throttle device, executing throttling action in the dehumidifying operation is disposed therebetween to constitute the refrigerating cycle, thus a flow rate and kinetic energy of the refrigerant current jetted from the two-way valve with the cylindrical flow channel are reduced in the dehumidifying operation, and the refrigerant flow noise generated from the cylindrical flow channel can be remarkably reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、本発明は、除湿運転が可能な空気調和機に関するものである。   The present invention relates to an air conditioner capable of dehumidifying operation.

冷凍サイクルで除湿運転を行う空気調和機の一従来例として、圧縮機、室外熱交換器、絞り装置、室内熱交換器等を順次冷媒配管で接続し、さらに室内熱交換器を二分割してこれらの間に除湿運転時の絞りとして用いる小孔を持つ小孔付二方弁を設けたサイクル構成が開示されている（例えば、特許文献１参照）。そして除湿運転時には、冷媒をこの小孔に流すことにより、二分割した室内熱交換器のうちの上流側を凝縮器、下流側を蒸発器とし、空気に対して、蒸発器で冷却・除湿するとともに凝縮器で加熱して、温度を下げずに湿度を下げる除湿運転を可能にしている。   As a conventional example of an air conditioner that performs a dehumidifying operation in a refrigeration cycle, a compressor, an outdoor heat exchanger, an expansion device, an indoor heat exchanger, etc. are sequentially connected by a refrigerant pipe, and the indoor heat exchanger is further divided into two parts. A cycle configuration in which a two-way valve with a small hole having a small hole used as a throttle at the time of dehumidifying operation is provided between them (see, for example, Patent Document 1). During the dehumidifying operation, the refrigerant is allowed to flow through the small holes so that the upstream side of the divided indoor heat exchanger is a condenser and the downstream side is an evaporator, and the air is cooled and dehumidified by the evaporator. At the same time, it is heated with a condenser to enable dehumidifying operation to lower the humidity without lowering the temperature.

ところで一般に、絞り装置の所では、絞り作用に伴い大きな冷媒流動音（連続音及び不連続音）が発生するが、この冷媒流動音低減の一従来例として、室内熱交換器を二分割した間に除霜運転時の絞りとして用いる小孔を複数設けることにより、冷媒を分散させ、騒音レベルの低減を図っている（例えば、特許文献２参照）。
特開平２−１８３７７６号公報 特開平７−９１７７８号公報 By the way, generally, at the throttle device, a large refrigerant flow sound (continuous sound and discontinuous sound) is generated due to the throttling action. As a conventional example of this refrigerant flow noise reduction, the indoor heat exchanger is divided into two parts. By providing a plurality of small holes used as throttling during defrosting operation, the refrigerant is dispersed and the noise level is reduced (see, for example, Patent Document 2).
Japanese Patent Laid-Open No. 2-183776 Japanese Unexamined Patent Publication No. 7-91778

ところで、上記の特開平７―９１７７８号公報に記載のような冷凍サイクルでは、除湿運転時に、除湿絞り装置である複数の小孔付二方弁の上流側の凝縮器となる室内熱交換器の出口が気液二相状態になると除湿絞り装置の所で冷媒流動音が発生し、除湿絞り装置が室内側にあることから、人に不快感を与えることになる。この問題に対して、従来は制振材や遮音材を設けることにより騒音低減を図っていた。しかし最近は快適性に対する要求が非常に高くなり、騒音に対してさらに低減することが要求されている。   By the way, in the refrigeration cycle as described in the above Japanese Patent Application Laid-Open No. 7-91778, an indoor heat exchanger that serves as a condenser on the upstream side of a plurality of small-hole two-way valves that are dehumidifying throttle devices during dehumidifying operation. When the outlet is in a gas-liquid two-phase state, a refrigerant flow noise is generated at the dehumidifying throttle device, and the dehumidifying throttle device is on the indoor side. Conventionally, noise reduction has been attempted by providing a vibration damping material or a sound insulation material. However, recently, the demand for comfort has become very high, and further reduction has been required for noise.

本発明の目的は、除湿絞り装置によって発生する冷媒の流動音を低減することが出来る空気調和機を提供することにある。   The objective of this invention is providing the air conditioner which can reduce the flow sound of the refrigerant | coolant which generate | occur | produces with a dehumidification throttle apparatus.

上記目的を達成するために、本発明の空気調和機は、室内熱交換器を二分割し、その間に除湿絞り装置として用いる二方弁を設けた冷凍サイクルにおいて、通路の開閉を行う弁部に絞り作用を行う円筒状流路を設けて除湿運転時には弁部により通路を閉じて前記空間に冷媒を流す構造の二方弁で構成されていることを特徴としている。   In order to achieve the above object, an air conditioner according to the present invention has a valve section for opening and closing a passage in a refrigeration cycle in which an indoor heat exchanger is divided into two and a two-way valve used as a dehumidifying throttle device is provided therebetween. It is characterized by comprising a two-way valve having a structure in which a cylindrical flow path that performs a throttling action is provided and the passage is closed by a valve portion during a dehumidifying operation so that a refrigerant flows into the space.

本発明は、除湿絞り装置の絞り部分を円筒状にすることで、音の発生を分散させることができる。   According to the present invention, the generation of sound can be dispersed by making the throttle portion of the dehumidifying throttle device cylindrical.

第１の発明の空気調和機は、室内熱交換器を二分割し、その間に除湿絞り装置として用いる二方弁を設けた冷凍サイクルにおいて、通路の開閉を行う弁部に絞り作用を行う円筒状流路を設けて除湿運転時には弁部により通路を閉じて前記空間に冷媒を流す構造の二方弁で構成されていることにより、除湿絞り装置の絞り部分を円筒状にすることで、音の発生を分散させることができる。   An air conditioner according to a first aspect of the present invention is a refrigeration cycle in which an indoor heat exchanger is divided into two and a two-way valve used as a dehumidifying throttling device is provided therebetween, and a cylindrical shape that performs a throttling action on a valve portion that opens and closes a passage By providing a flow path and using a two-way valve with a structure that allows the refrigerant to flow into the space by closing the passage by the valve part during dehumidifying operation, the throttle part of the dehumidifying throttle device is made cylindrical, Generation can be dispersed.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図２は本発明の実施例に関係する冷凍サイクルを示す図であり、１は圧縮機、２は冷房や暖房等の運転状態を切り換える四方弁、３は室外熱交換器、４は冷房運転及び暖房運転の時に冷媒の流れる主絞り装置、５は主絞り装置４と並列に設けた除湿運転時に冷媒を流す二方弁、６ａ、６ｂは二分割された室内熱交換器、７は室内熱交換器６ａと６ｂとの間にこれらと直列に接続した除湿運転時に絞り作用を行う除湿絞り装置、８は圧縮機への液戻りを防止するためのアキュムレータ、９は室外熱交換器３へ送風するための室外ファン、１０は室内熱交換器６ａ及び６ｂに送風するための室内ファンである。 (Embodiment 1)
FIG. 2 is a diagram showing a refrigeration cycle according to an embodiment of the present invention, where 1 is a compressor, 2 is a four-way valve for switching between operating states such as cooling and heating, 3 is an outdoor heat exchanger, 4 is a cooling operation and A main throttle device through which refrigerant flows during heating operation, 5 is a two-way valve for flowing refrigerant during dehumidification operation provided in parallel with the main throttle device 4, 6a and 6b are divided indoor heat exchangers, and 7 is indoor heat exchange. A dehumidifying squeezing device for performing a squeezing action during dehumidifying operation connected in series between these devices 6a and 6b, 8 an accumulator for preventing liquid return to the compressor, and 9 for blowing air to the outdoor heat exchanger 3 The outdoor fan 10 is an indoor fan for sending air to the indoor heat exchangers 6a and 6b.

図１は、上述の図２の冷凍サイクルで述べた除湿絞り装置７である除湿運転時に絞り作用を行う円筒状流路を設けた円筒状流路付二方弁７の構造を示す図であり、さらに図３は、詳細は後述するが、図１に示す弁体におけるＸ−Ｘ断面を示す図である。これらの図において、２０は、弁座２１を備えた弁本体、２２は、弁本体２０の内面に沿って摺動する太径部２２ａと、除湿運転時に絞り作用を行う円筒状流路２３、横孔２４を設けるとともに端部に弁座２１に接する弁部２５を備えた細径部２２ｂからなる弁体であり、弁本体２０と弁体の細径部２２ｂとの間には弁室２６が形成されている。また、２７は弁スプリング、２８は吸引子、２９は電磁コイル、３０は除湿運転時に冷媒流入口側になる第１継管、３１は除湿運転時に冷媒流出口側になる第２継管である。   FIG. 1 is a diagram showing a structure of a two-way valve 7 with a cylindrical flow path provided with a cylindrical flow path that performs a throttling operation during the dehumidifying operation, which is the dehumidifying and throttling device 7 described in the refrigeration cycle of FIG. Further, FIG. 3 is a view showing an XX cross section of the valve body shown in FIG. 1, although details will be described later. In these drawings, 20 is a valve body provided with a valve seat 21, 22 is a large-diameter portion 22a that slides along the inner surface of the valve body 20, and a cylindrical flow path 23 that performs a throttling action during dehumidification operation. The valve body 26 includes a narrow-diameter portion 22b provided with a lateral hole 24 and provided with a valve portion 25 in contact with the valve seat 21 at an end portion. Is formed. Also, 27 is a valve spring, 28 is an attractor, 29 is an electromagnetic coil, 30 is a first connecting pipe that is on the refrigerant inlet side during the dehumidifying operation, and 31 is a second connecting pipe that is on the refrigerant outlet side during the dehumidifying operation. .

以上のように構成されているので、冷房運転時には、二方弁５を閉じ円筒状流路付二方弁７を開く（すなわち、図１において、電磁コイル２９をオンにし、弁体２２を吸引子２８に引きつけて弁部２５を弁座２１から引き離し、第１継管と第２継管がほとんど圧力損失なしにつながるようにする）ことにより、冷媒を、実線矢印で示すように、圧縮機１、四方弁２、室外熱交換器３、主絞り装置４、室内熱交換器６ａ、円筒状流路付二方弁７、室内熱交換器６ｂ、四方弁２、アキュムレータ８、圧縮器１の順に循環させ、室外熱交換器３を凝縮器、室内熱交換器６ａ及び６ｂを蒸発器として室内を冷房する。暖房運転時には、上記冷房運転において四方弁２を切り換えることにより、冷媒を、破線矢印で示すように、圧縮機１、四方弁２、室内熱交換器６ｂ、円筒状流路付二方弁７、室内熱交換器６ａ、主絞り装置４、室外熱交換器３、四方弁２、アキュムレータ８、圧縮機１の順に循環させ、室外熱交換器３を蒸発器、室内熱交換器６ａ及び６ｂを凝縮器として室内を暖房する。   Since it is configured as described above, during the cooling operation, the two-way valve 5 is closed and the two-way valve 7 with a cylindrical flow path is opened (that is, the electromagnetic coil 29 is turned on in FIG. By pulling the valve portion 25 away from the valve seat 21 by attracting it to the child 28 so that the first connecting pipe and the second connecting pipe are connected with almost no pressure loss, the refrigerant is shown in FIG. 1, four-way valve 2, outdoor heat exchanger 3, main throttle device 4, indoor heat exchanger 6a, two-way valve 7 with cylindrical flow path, indoor heat exchanger 6b, four-way valve 2, accumulator 8, and compressor 1 The indoor heat exchanger 3 is used as a condenser, and the indoor heat exchangers 6a and 6b are used as an evaporator to cool the room. At the time of heating operation, by switching the four-way valve 2 in the cooling operation, as shown by the broken line arrow, the refrigerant, the compressor 1, the four-way valve 2, the indoor heat exchanger 6b, the two-way valve 7 with a cylindrical flow path, The indoor heat exchanger 6a, the main expansion device 4, the outdoor heat exchanger 3, the four-way valve 2, the accumulator 8, and the compressor 1 are circulated in this order, the outdoor heat exchanger 3 is an evaporator, and the indoor heat exchangers 6a and 6b are condensed. The room is heated as a container.

除湿運転時には、四方弁２を冷房運転と同様に切り換え、二方弁５を開き円筒状流路付二方弁７を閉じる（すなわち、図１において、電磁コイル２９をオフにし弁体２２を吸引子２８から離して弁部２５を弁座２１に接触させ、第１継管と第２継管が円筒状流路２３以外ではつながらないようにする）ことにより、冷媒を、一点鎖線で示すように、圧縮機１、四方弁２、室外熱交換器３、二方弁５、室内熱交換器６ａ、円筒状流路付二方弁７の円筒状流路２３、室内熱交換器６ｂ、四方弁２、アキュムレータ８、圧縮機１の順に循環させ、円筒状流路付二方弁７の円筒部での絞り作用により、室外熱交換器３を上流側の凝縮器、室内熱交換器６ａを下流側の凝縮器、室内熱交換器６ｂを蒸発器とする。そして、室内熱交換器６ｂで室内空気の冷却・除湿行うとともに室内熱交換器６ａで空気を加熱することにより、室温の低下を防ぎながら除湿する除湿運転を行うことができる。なお、この場合、室外熱交換器３での凝縮能力あるいは圧縮機１の能力を変えることにより、室内熱交換器６ａでの凝縮能力すなわち放熱量を変えて室内ファン１０による吹出空気を冷房気味から暖房気味の広い温度範囲に渡って制御することができる。また室内熱交換器６ａと６ｂは、前後に並べて室内ファン１０により風を室内熱交換器６ｂから６ａに流しても
良く、あるいは上下に並べて室内ファン１０により風を室内熱交換器６ａと６ｂに並列に流しても良い。 During the dehumidifying operation, the four-way valve 2 is switched in the same manner as in the cooling operation, and the two-way valve 5 is opened and the two-way valve 7 with a cylindrical flow path is closed (that is, in FIG. 1, the electromagnetic coil 29 is turned off and the valve element 22 is sucked. As shown in the alternate long and short dash line, the valve portion 25 is brought into contact with the valve seat 21 apart from the child 28 so that the first and second connecting pipes are not connected except for the cylindrical flow path 23). , The compressor 1, the four-way valve 2, the outdoor heat exchanger 3, the two-way valve 5, the indoor heat exchanger 6a, the cylindrical flow path 23 of the two-way valve 7 with the cylindrical flow path, the indoor heat exchanger 6b, the four-way valve 2. The accumulator 8 and the compressor 1 are circulated in this order, and the outdoor heat exchanger 3 is connected to the upstream condenser and the indoor heat exchanger 6a is connected to the downstream side by the throttling action at the cylindrical portion of the two-way valve 7 with a cylindrical flow path. The side condenser, the indoor heat exchanger 6b, is an evaporator. Then, the indoor heat exchanger 6b cools and dehumidifies the indoor air and heats the air with the indoor heat exchanger 6a, thereby performing a dehumidifying operation for dehumidifying while preventing a decrease in room temperature. In this case, by changing the condensing capacity in the outdoor heat exchanger 3 or the capacity of the compressor 1, the condensing capacity in the indoor heat exchanger 6a, that is, the amount of heat radiation is changed, so that the air blown out by the indoor fan 10 is changed from the cooling taste. It can be controlled over a wide range of heating. Further, the indoor heat exchangers 6a and 6b may be arranged in the front and rear direction so that the wind is sent from the indoor heat exchanger 6b to 6a by the indoor fan 10, or the wind is sent to the indoor heat exchangers 6a and 6b by the indoor fan 10 arranged vertically. You may flow in parallel.

ところで、図２の冷凍サイクルにおいては、主絞り装置４として、キャピラリチューブのような固定絞り装置に限らず、膨張弁や電動膨張弁のような可変絞り装置を用いることができる。特に流通抵抗の少ない全開状態が可能な電動膨張弁を用いた場合には、図２において二方弁５が不要になる。そしてこうした場合にもこれまでに述べてきた実施例を適用して、除湿運転時に除湿絞り装置として用いる円筒状流路付二方弁での冷媒流動音を低減できる。   In the refrigeration cycle of FIG. 2, the main throttle device 4 is not limited to a fixed throttle device such as a capillary tube, and a variable throttle device such as an expansion valve or an electric expansion valve can be used. In particular, when an electric expansion valve that can be fully opened with little flow resistance is used, the two-way valve 5 is not required in FIG. Even in such a case, the embodiment described so far can be applied to reduce the refrigerant flow noise in the two-way valve with a cylindrical flow path used as the dehumidifying throttle device during the dehumidifying operation.

また、図２に示す冷凍サイクルにおいて、四方弁２を暖房サイクルになるように切換えて室内側で冷媒を室内熱交換器６ｂから円筒状流路付二方弁７、室内熱交換器６ａの順に流すとともに、図１に示す実施例における除湿絞り装置である円筒状流路付二方弁の第１継管を室内熱交換器６ｂに接続し、第２継管を室内熱交換器６ａに接続し、さらに円筒状流路付二方弁を閉（オフ）にすることにより、室内熱交換器６ｂを凝縮器、室内熱交換器６ａを蒸発器として室温を下げずに除湿する除湿運転を行うことができる。この場合にも、これまでに述べてきた実施例を適用して、同様に除湿運転時の冷媒流動音を低減することができる。   Further, in the refrigeration cycle shown in FIG. 2, the four-way valve 2 is switched to become a heating cycle, and the refrigerant is transferred indoors from the indoor heat exchanger 6b to the two-way valve 7 with a cylindrical flow path and the indoor heat exchanger 6a in this order. 1 is connected to the indoor heat exchanger 6b and the second pipe to the indoor heat exchanger 6a is connected to the indoor heat exchanger 6b. Further, by closing (turning off) the two-way valve with a cylindrical flow path, the dehumidifying operation for dehumidifying without lowering the room temperature is performed using the indoor heat exchanger 6b as a condenser and the indoor heat exchanger 6a as an evaporator. be able to. In this case as well, the embodiment described so far can be applied to similarly reduce the refrigerant flow noise during the dehumidifying operation.

さらに、これまでは冷房、暖房、除湿の三つの運転状態ができる冷凍サイクルについて説明してきたが、これに限るものではなく、他の冷凍サイクルについてもこれまでに説明してきた実施例は適用できる。例えば、図２において、四方弁２を取り、この位置に圧縮器１とアキュムレータ８を、室内熱交換器６ｂ、アキュムレータ８、圧縮器１、室外熱交換器３が直列になるように接続すると（図示は省略）、この場合には、冷房運転と冷房サイクルでの除湿運転が可能な冷凍サイクルとなり、除湿運転において、これまでに述べてきた実施例を適用して、同様に円筒状流路付二方弁の所で発生する冷媒流動音を低減することができる。また図２において、四方弁２を取り、この位置に圧縮器１とアキュムレータ８を、室外熱交換器３、アキュムレータ８、圧縮器１、室内熱交換器６ｂが直列になるように接続すると（図示は省略）、この場合には、暖房運転と暖房サイクルでの除湿運転が可能な冷凍サイクルとなり、除湿運転において、これまでに述べてきた実施例を適用して、同様に円筒状流路付二方弁の所で発生する冷媒流動音を低減することができる。   Furthermore, although the refrigeration cycle which can perform three operation states of cooling, heating and dehumidification has been described so far, the present invention is not limited to this, and the embodiments described so far can be applied to other refrigeration cycles. For example, in FIG. 2, when the four-way valve 2 is taken and the compressor 1 and the accumulator 8 are connected to this position so that the indoor heat exchanger 6b, the accumulator 8, the compressor 1, and the outdoor heat exchanger 3 are in series ( In this case, the refrigeration cycle is capable of performing the cooling operation and the dehumidifying operation in the cooling cycle. In the dehumidifying operation, the embodiment described above is applied and the cylindrical flow path is similarly provided. Refrigerant flow noise generated at the two-way valve can be reduced. In FIG. 2, when the four-way valve 2 is taken and the compressor 1 and the accumulator 8 are connected to this position so that the outdoor heat exchanger 3, the accumulator 8, the compressor 1, and the indoor heat exchanger 6b are in series (illustrated). In this case, a refrigeration cycle capable of performing a heating operation and a dehumidifying operation in the heating cycle is obtained. In the dehumidifying operation, the embodiment described above is applied, and the two with a cylindrical flow path are similarly applied. Refrigerant flow noise generated at the way valve can be reduced.

なお、図２を初めとするこれまでに述べてきた冷凍サイクルの構成において、アキュムレータは必ずしも必要ではなく、使用する圧縮機の種類あるいは主絞り装置の種類や制御方法によってはアキュムレータ無しの冷凍サイクル構成とすることができる。   In the configuration of the refrigeration cycle described so far including FIG. 2, an accumulator is not necessarily required. Depending on the type of compressor used, the type of main throttle device, and the control method, a refrigeration cycle configuration without an accumulator is used. It can be.

さらにこれまでの説明では、建屋の空気調和機を想定して熱交換器を室内熱交換器、室外熱交換器と呼んできたが、本発明は、これに限らず、除湿運転が必要な他の用途の装置にも適用可能である。こうした場合を考えると、一般に、室内熱交換器は利用側熱交換器、室外熱交換器は熱源側熱交換器、さらに室内ファンは利用側ファン、室外ファンは熱源側ファンといいかえることができる。   Furthermore, in the above description, the heat exchanger has been called an indoor heat exchanger and an outdoor heat exchanger assuming a building air conditioner. However, the present invention is not limited to this, and other dehumidifying operations are required. The present invention can also be applied to a device for the purpose. Considering such a case, generally, an indoor heat exchanger can be called a use side heat exchanger, an outdoor heat exchanger can be called a heat source side heat exchanger, an indoor fan can be called a use side fan, and an outdoor fan can be called a heat source side fan.

本発明にかかる空気調和機は、低騒音化が可能になるので、除湿可能な空気調和機として有用である。   Since the air conditioner according to the present invention can reduce noise, it is useful as an air conditioner capable of dehumidification.

本発明の実施の形態１における除湿運転可能な冷凍サイクルの除湿絞り装置である円筒状流路付二方弁の構造を縦断面図The longitudinal cross-sectional view of the structure of the two-way valve with a cylindrical flow path which is the dehumidification throttle apparatus of the refrigerating cycle which can perform dehumidification operation in Embodiment 1 of this invention 本発明の実施の形態１における冷凍サイクルにより空気の冷却・除湿及び加熱を行う除湿運転が可能な冷凍サイクルの構成図Configuration diagram of a refrigeration cycle capable of dehumidifying operation in which air is cooled, dehumidified and heated by the refrigeration cycle in Embodiment 1 of the present invention. 図１に示す円筒状流路付二方弁の弁体における矢視ＸＸ断面図XX sectional view in the valve element of the two-way valve with a cylindrical flow path shown in FIG.

符号の説明Explanation of symbols

１ 圧縮機
２ 四方弁
３ 室外熱交換器
４ 主絞り装置
５ 二方弁
６ａ、６ｂ 室内熱交換器
７ 除湿絞り装置／円筒状流路付二方弁
９ 室外ファン
１０ 室内ファン
２０ 弁本体
２２ 弁体
２３ 円筒状流路
２４ 横孔
２７ 弁スプリング
２８ 吸引子
２９ 電磁コイル
３０ 第１継管
３１ 第２継管 DESCRIPTION OF SYMBOLS 1 Compressor 2 Four-way valve 3 Outdoor heat exchanger 4 Main throttle device 5 Two-way valve 6a, 6b Indoor heat exchanger 7 Dehumidification throttle device / Two-way valve with cylindrical flow path 9 Outdoor fan 10 Indoor fan 20 Valve body 22 Valve Body 23 Cylindrical channel 24 Horizontal hole 27 Valve spring 28 Suction element 29 Electromagnetic coil 30 First connection 31 Second connection

Claims (1)

圧縮機、室外熱交換器、室内熱交換器を備え、前記室内熱交換器を熱的に二分割してその間に除湿運転時に使用する除湿絞り装置を設け、除湿運転時には熱的に二分割された室内熱交換器の上流側が凝縮器、下流側が蒸発器として作用して除湿を行うように冷凍サイクルを構成するとともに前記除湿絞り装置が、通路の開閉を行う弁部に絞り作用を行う円筒状流路を設けて除湿運転時には弁部により通路を閉じて前記空間に冷媒を流す構造の二方弁で構成されていることを特徴とする空気調和機。 A compressor, an outdoor heat exchanger, and an indoor heat exchanger are provided, and the indoor heat exchanger is thermally divided into two, and a dehumidifying throttle device is provided for use during the dehumidifying operation, and is thermally divided into two during the dehumidifying operation. The refrigeration cycle is configured such that the upstream side of the indoor heat exchanger functions as a condenser and the downstream side functions as an evaporator to perform dehumidification, and the dehumidifying throttle device has a cylindrical shape that performs a throttling action on a valve portion that opens and closes a passage An air conditioner comprising a two-way valve having a structure in which a flow path is provided and a passage is closed by a valve portion during a dehumidifying operation so that a refrigerant flows into the space.

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