JP3435759B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP3435759B2 JP3435759B2 JP27159793A JP27159793A JP3435759B2 JP 3435759 B2 JP3435759 B2 JP 3435759B2 JP 27159793 A JP27159793 A JP 27159793A JP 27159793 A JP27159793 A JP 27159793A JP 3435759 B2 JP3435759 B2 JP 3435759B2
- Authority
- JP
- Japan
- Prior art keywords
- air conditioner
- heat exchanger
- dehumidifying
- way valve
- flow path
- 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 - Lifetime
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、冷凍サイクルにより除
湿あるいは冷房，暖房，除湿運転が可能な空気調和機に
係る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner capable of dehumidifying or cooling, heating and dehumidifying operations by a refrigeration cycle.
【０００２】[0002]
【従来の技術】従来、除湿運転が可能な空気調和機とし
て、蒸発器により冷却・減湿された空気を再加熱する方
法としては電気ヒータを用いる方式や冷凍サイクルの凝
縮熱を利用する方式などが知られている。2. Description of the Related Art Conventionally, as an air conditioner capable of dehumidifying operation, as a method of reheating air cooled and dehumidified by an evaporator, a method using an electric heater, a method utilizing condensation heat of a refrigeration cycle, etc. It has been known.
【０００３】除湿運転時に冷却された空気を凝縮熱によ
り再加熱する冷凍サイクルとしては、図７に示すよう
に、室内側の熱交換器１０ａ，１０ｂを風路に対して前
後に２分割し、風上側１０ａを蒸発器，風下側１０ｂを
凝縮器とする構成が一般に知られている。分割された部
分間は、途中に二方弁(二方弁Ａ)１２を有する配管でつ
ながれており、この配管と並列にキャピラリチューブ１
７が接続されている。また室外側熱交換器と室内側熱交
換器との間には冷暖房用の絞り装置であるキャピラリチ
ューブ７と二方弁(二方弁Ｂ)６がやはり並列につながれ
ている。As a refrigerating cycle for reheating air cooled by dehumidifying operation by condensation heat, as shown in FIG. 7, the heat exchangers 10a, 10b on the indoor side are divided into two parts in front of and behind the air passage, It is generally known that the windward side 10a is an evaporator and the leeward side 10b is a condenser. The divided parts are connected by a pipe having a two-way valve (two-way valve A) 12 on the way, and the capillary tube 1 is connected in parallel with this pipe.
7 is connected. A capillary tube 7 which is a throttle device for cooling and heating and a two-way valve (two-way valve B) 6 are also connected in parallel between the outdoor heat exchanger and the indoor heat exchanger.
【０００４】除湿運転時には二方弁Ａ１２を閉じ、二方
弁Ｂ６を開ける。室外側の熱交換器４を出た冷媒は高温
高圧の二相状態で室内側熱交換器の風下側１０ｂに流入
する。ここでさらに冷媒は凝縮し、その凝縮熱によって
空気の再加熱が行なわれる。風下側の熱交換器を出た冷
媒は二方弁Ａと並列に接続されているキャピラリチュー
ブ１７を通って減圧され温度が下がる。ついで風上側の
熱交換器１０ａに流入して蒸発し、その蒸発熱によって
空気の冷却・減湿が行なわれる。During the dehumidifying operation, the two-way valve A12 is closed and the two-way valve B6 is opened. The refrigerant discharged from the outdoor heat exchanger 4 flows into the leeward side 10b of the indoor heat exchanger in a two-phase state of high temperature and high pressure. Here, the refrigerant further condenses, and the heat of condensation reheats the air. The refrigerant discharged from the leeward heat exchanger passes through the capillary tube 17 connected in parallel with the two-way valve A, and is decompressed to lower the temperature. Then, it flows into the heat exchanger 10a on the windward side and evaporates, and the heat of evaporation cools and dehumidifies the air.
【０００５】冷暖房運転時には二方弁Ａ１２を開け、二
方弁Ｂ６を閉じる。この時冷媒は二方弁Ｂと並列に接続
された冷暖房用のキャピラリチューブ７を通る。また室
内側では二方弁Ａを通るので減圧されることがなく、室
内側熱交換器全体が蒸発器あるいは凝縮器となる。During cooling / heating operation, the two-way valve A12 is opened and the two-way valve B6 is closed. At this time, the refrigerant passes through the cooling and heating capillary tube 7 connected in parallel with the two-way valve B. Further, since the air passes through the two-way valve A on the indoor side, there is no pressure reduction, and the entire indoor heat exchanger serves as an evaporator or a condenser.
【０００６】以上が、除湿運転に冷凍サイクルを用いた
場合の基本的な構成である。除湿用の絞り装置としては
上述のようにキャピラリチューブの他に例えば実開平１
−９８３８１にあるように二方弁内にブリードポートと
呼ばれる小孔を設け、冷暖房運転時には主弁を開けて冷
媒の流れに対して抵抗にならないようにし、除湿運転時
には二方弁の主弁を閉めてブリードポートに冷媒を通し
これを除湿絞りとするものが公知である。The above is the basic configuration when the refrigeration cycle is used for the dehumidifying operation. As the squeezing device for dehumidification, in addition to the capillary tube as described above, for example, an actual open flat 1
As shown in -98381, a small hole called a bleed port is provided in the two-way valve, the main valve is opened during cooling / heating operation to prevent resistance to the flow of the refrigerant, and the main valve of the two-way valve is opened during dehumidification operation. It is known that the refrigerant is closed and a refrigerant is passed through the bleed port to form a dehumidifying diaphragm.
【０００７】[0007]
【発明が解決しようとする課題】高温多湿となる日本の
夏季では除湿運転は不可欠である。この時は空気調和機
からの吹き出し空気の温度は室温より低めにする必要が
ある。また梅雨や秋季の長雨時などでは気温は低いが湿
度は高い気候になる。このような時には空気調和機から
の吹き出し空気の温度は室温と同じか上げぎみに保ちな
がら除湿する必要がある。冷媒の蒸発熱で除湿，凝縮熱
で再加熱する冷凍サイクルを用いた除湿方式は、除湿と
共に吹き出し空気温度を様々に変えうる点で優れてお
り、ヒータ等の補助的な熱源を必要としないので省エネ
ルギーの点からも優れている。Dehumidifying operation is indispensable in the summer of Japan when the temperature and humidity are high. At this time, the temperature of the air blown out from the air conditioner needs to be lower than room temperature. In addition, during the rainy season and long autumn rains, the temperature is low but the humidity is high. In such a case, it is necessary to dehumidify the air blown from the air conditioner while keeping the temperature of the air blown at room temperature or at the highest level. The dehumidification method that uses a refrigeration cycle that dehumidifies with the heat of vaporization of the refrigerant and reheats with the heat of condensation is superior in that the temperature of the blown air can be changed in various ways along with dehumidification, and it does not require an auxiliary heat source such as a heater. It is also excellent in terms of energy saving.
【０００８】室内側の熱交換器を２分割してその間に除
湿用の絞り装置を設ける際、除湿用の絞りとして従来の
ようにキャピラリチューブを用いると、除湿用のキャピ
ラリチューブは通常室内側のユニット内に設けられるの
で、除湿運転時にはキャピラリチューブおよびその前後
で冷媒が二相状態となるため騒音が発生する。その対策
としてキャピラリチューブの出口に太径パイプを接続し
たり、振動吸収用の防振材を付加する必要があった。When a heat exchanger on the indoor side is divided into two parts and a dehumidifying expansion device is provided between them, if a capillary tube is used as a dehumidifying diaphragm as in the prior art, the dehumidifying capillary tube is usually placed on the indoor side. Since it is provided inside the unit, noise is generated during the dehumidifying operation because the refrigerant is in a two-phase state in the capillary tube and in the front and rear thereof. As a countermeasure, it was necessary to connect a large-diameter pipe to the outlet of the capillary tube or add a vibration absorbing material for absorbing vibration.
【０００９】二方弁内にブリードポートを設ける方式は
省スペースの点で優れているものの、除湿運転時には上
記と同様二相状態の冷媒がブリードポートを通過する際
やはり騒音が発生するが、発生源が二方弁の内部である
ため対策が難しい。Although the method of providing the bleed port in the two-way valve is excellent in terms of space saving, noise is still generated when the two-phase refrigerant passes through the bleed port during dehumidification operation as described above. Countermeasures are difficult because the source is inside the two-way valve.
【００１０】また二方弁の代わりに電動膨張弁等の流量
調節弁を用いて、冷暖房運転時には弁の開度を大きくし
て抵抗なく冷媒を流し、除湿運転時には開度を小さくし
て除湿絞りとする場合も、除湿運転時には上記と同様二
相状態の冷媒が弁部を通過する際やはり騒音が発生す
る。Further, a flow control valve such as an electric expansion valve is used instead of the two-way valve to increase the opening of the valve during cooling / heating operation to allow the refrigerant to flow without resistance, and reduce the opening during dehumidification operation to reduce the dehumidification throttle. In such a case as well, during dehumidifying operation, noise is still generated when the refrigerant in the two-phase state passes through the valve portion as described above.
【００１１】本発明が解決しようとする課題は、除湿運
転が可能な冷凍サイクルを有する空気調和機において除
湿運転時の騒音低減に効果のある構造を提供することで
ある。An object of the present invention is to provide a structure effective in reducing noise during dehumidifying operation in an air conditioner having a refrigeration cycle capable of dehumidifying operation.
【００１２】[0012]
【課題を解決するための手段】上述の課題を解決するた
めの第１の手段は、室内側熱交換器を２分割しその間に
除湿用の絞り装置を設けたサイクル構成において、除湿
運転時の冷媒の流れ方向から見て凝縮側と蒸発側熱交換
器の間で除湿用絞り装置の下流に螺旋状流路部分を設け
て、室内側熱交換器の凝縮側を出た冷媒が除湿用の絞り
装置を通過した後にその螺旋状流路部分を通過するよう
な構成とすることである。The first means for solving the above-mentioned problems is a cycle structure in which an indoor heat exchanger is divided into two and a dehumidifying device for dehumidification is provided between the indoor heat exchanger and the dehumidifying operation during dehumidification operation. A spiral flow path portion is provided downstream of the dehumidifying expansion device between the condensation side and the evaporation side heat exchanger as viewed from the flow direction of the refrigerant, and the refrigerant flowing out from the condensation side of the indoor side heat exchanger is used for dehumidification. The configuration is such that after passing through the throttle device, it passes through the spiral flow path portion.
【００１３】上述の課題を解決するための第２の手段
は、ブリードポートと呼ばれる小孔を内部に有する二方
弁を上記第１の手段にある螺旋状流路部分の上流に備
え、除湿運転時にはブリードポートを除湿用絞りとして
用いるような構成とすることである。A second means for solving the above-mentioned problem is to provide a two-way valve having a small hole called a bleed port therein, upstream of the spiral flow passage portion of the above-mentioned first means, for dehumidifying operation. Sometimes the bleed port is used as a diaphragm for dehumidification.
【００１４】上述の課題を解決するための第３の手段
は、上記第２の手段における二方弁の代わりに、全閉か
ら全開まで連続的あるいは段階的に調節可能な流量調節
弁を用い、除湿運転時には流量調節弁の開度を小さくし
て除湿用絞りとして用いるような構成とすることであ
る。A third means for solving the above-mentioned problem is to use a flow control valve capable of continuously or stepwise adjusting from the fully closed to the fully opened, instead of the two-way valve in the second means. In the dehumidifying operation, the opening of the flow rate control valve is made small to be used as a dehumidifying throttle.
【００１５】上述の課題を解決するための第４の手段
は、上記第１あるいは第２あるいは第３の手段におい
て、上記螺旋状流路を除湿用絞り装置の上流にも設ける
構成とすることである。A fourth means for solving the above problem is that in the first, second or third means, the spiral flow path is provided upstream of the dehumidifying throttle device. is there.
【００１６】上述の課題を解決するための第５の手段
は、上記第１あるいは第２あるいは第３あるいは第４の
手段において、螺旋状流路の内側に粘弾性の高い材料を
付加して制振機能を高めた構成とすることである。A fifth means for solving the above-mentioned problem is the above-mentioned first, second, third or fourth means, in which a material having high viscoelasticity is added to the inside of the spiral flow path to control it. It is to have a configuration with an enhanced shaking function.
【００１７】[0017]
【作用】冷凍サイクルを用いて、冷媒の蒸発熱で空気の
冷却・減湿，凝縮熱で再加熱を行なう除湿運転の場合、
室内側の熱交換器を２分割してその間に除湿用の絞り装
置を設けることになる。実際の構成としては、２分割さ
れた熱交換器の一方から引き出された配管と、もう一方
から引き出された配管との間にキャピラリチューブ，ブ
リードポート等の絞り装置が挿入されることになる。[Operation] In the dehumidifying operation in which the refrigeration cycle is used to cool and dehumidify the air by the heat of evaporation of the refrigerant and reheat it by the heat of condensation,
The indoor heat exchanger is divided into two, and a dehumidifying expansion device is provided between them. As an actual configuration, a throttling device such as a capillary tube or a bleed port is inserted between a pipe drawn from one of the two heat exchangers divided into two and a pipe drawn from the other.
【００１８】除湿運転の際には、２分割された室内側の
熱交換器の一方が凝縮器になり、もう一方が蒸発器にな
る。凝縮器で液化した冷媒は除湿用の絞りを通って下流
側に噴出する。この際断熱膨張，摩擦抵抗等により冷媒
は低温，低圧の状態になると同時に気相の割合が増え流
速が上がる。この流速の高い２相状態で下流側のパイ
プ，蒸発器に流入するとこれらが大きく加振され大きな
騒音が発生する。During the dehumidifying operation, one of the two indoor heat exchangers serves as a condenser and the other serves as an evaporator. The refrigerant liquefied in the condenser passes through the dehumidifying throttle and is ejected to the downstream side. At this time, due to adiabatic expansion, frictional resistance, etc., the refrigerant becomes a low temperature and low pressure state, and at the same time the proportion of the gas phase increases and the flow velocity increases. When the two-phase state in which the flow velocity is high flows into the pipe and the evaporator on the downstream side, these are greatly excited and a large noise is generated.
【００１９】そこで本発明による螺旋状の巻パイプを除
湿用絞りの下流側に設けることによりその部分で振動を
減衰させ冷媒流動に伴う騒音を低減することができる。
また冷媒の進行方向に対して垂直な面内で遠心力による
２次流れのために強い撹拌作用が生じる。この撹拌作用
によって気相と液相の混合が起こり、細かな気泡が液中
に均質に混ざったいわゆる均質流となり、それより下流
での振動が少なくなる。さらに螺旋状にパイプを巻いた
内側に粘弾性の高い材料を詰め込むことによって大きな
制振効果が得られる。従って本発明によれば絞りによる
冷媒の流動音を低減することができる。Therefore, by providing the spirally wound pipe according to the present invention on the downstream side of the dehumidifying throttle, the vibration can be attenuated at that portion and the noise accompanying the refrigerant flow can be reduced.
Further, a strong stirring action occurs due to the secondary flow due to the centrifugal force in the plane perpendicular to the traveling direction of the refrigerant. Due to this stirring action, the gas phase and the liquid phase are mixed with each other to form a so-called homogeneous flow in which fine bubbles are homogeneously mixed in the liquid, and the vibration in the downstream thereof is reduced. Further, by packing a material having high viscoelasticity inside the spirally wound pipe, a large damping effect can be obtained. Therefore, according to the present invention, the flow noise of the refrigerant due to the throttle can be reduced.
【００２０】[0020]
【実施例】本発明の実施例を図をもとに説明する。Embodiments of the present invention will be described with reference to the drawings.
【００２１】図１は本発明の一実施例を示したものであ
る。本実施例は、家庭用のルームエアコンとして広く普
及しているセパレートタイプの空気調和機に本発明を適
用したものであり、本図は、冷暖房および除湿運転切り
換え可能な冷凍サイクルの構成を模式的に示したもので
ある。冷房，暖房，除湿運転時の冷媒の流れを図中に矢
印で示している。１は圧縮機，２はアキュムレータ，３
は四方弁，４は室外側熱交換器で多数枚のフィンにパイ
プを貫通したクロスフィンチューブタイプの熱交換器，
５は室外側ファンである。６は室外側の二方弁(二方弁
Ｂ)であり１２の室内側二方弁(二方弁Ａ)と協調的に動
作することにより冷暖房および除湿の各運転を切り換え
る。即ち二方弁Ａを開け二方弁Ｂを閉じると冷暖房運転
となる。冷房と暖房の切り換えは四方弁３で行なう。ま
た二方弁Ａを閉じ二方弁Ｂを開けると除湿運転となる。
本実施例では二方弁Ａとしてブリードポートと呼ばれる
小孔を内部に有する二方弁を用いている。FIG. 1 shows an embodiment of the present invention. The present embodiment is one in which the present invention is applied to a separate type air conditioner that is widely used as a room air conditioner for home use. This figure schematically shows the configuration of a refrigeration cycle capable of switching between cooling and heating and dehumidifying operation. It is shown in. The arrows in the figure show the flow of refrigerant during cooling, heating, and dehumidifying operations. 1 is a compressor, 2 is an accumulator, 3
Is a four-way valve, 4 is an outdoor heat exchanger, a cross-fin tube type heat exchanger in which a large number of fins penetrate the pipe,
Reference numeral 5 is an outdoor fan. Reference numeral 6 denotes an outdoor two-way valve (two-way valve B), which operates in cooperation with the indoor two-way valve (two-way valve A) 12 to switch between heating and cooling and dehumidifying operations. That is, when the two-way valve A is opened and the two-way valve B is closed, the cooling and heating operation is performed. The four-way valve 3 is used for switching between cooling and heating. When the two-way valve A is closed and the two-way valve B is opened, the dehumidifying operation is started.
In this embodiment, a two-way valve having a small hole called a bleed port inside is used as the two-way valve A.
【００２２】冷暖房運転時には二方弁Ｂを閉じるので冷
暖房用の絞りであるキャピラリチューブ７を冷媒が流れ
る。室内側では二方弁Ａを開ける。この時には室内側の
熱交換器１０ａ，１０ｂは共に蒸発器あるいは凝縮器と
して作用する。Since the two-way valve B is closed during the heating / cooling operation, the refrigerant flows through the capillary tube 7, which is a throttle for cooling / heating. Open the two-way valve A on the indoor side. At this time, the heat exchangers 10a and 10b on the indoor side both act as an evaporator or a condenser.
【００２３】除湿運転時には二方弁Ｂを開け二方弁Ａを
閉じる。圧縮機１から吐出された冷媒は室外側熱交換器
４で一部が凝縮し二相状態のまま２分割された室内側熱
交換器の一方１０ｂに流入する。１０ｂ内で冷媒はさら
に凝縮し、その凝縮熱によって１０ａで冷却・減湿され
た空気の再加熱を行なう。１０ｂを出た冷媒は配管１３
に流入する。二方弁Ａは閉じられているので冷媒は、二
方弁Ａ内のブリードポート１６（図２中に示す。）を通
って配管１４に流入する。この時ブリードポート１６が
絞りとなり冷媒は断熱膨張して減圧される。配管１４か
ら熱交換器１０ａに流入した低温，低圧の冷媒は、空気
調和機に吸い込まれた空気から蒸発熱によって熱を奪
い、空気は冷却・減湿される。During the dehumidifying operation, the two-way valve B is opened and the two-way valve A is closed. A part of the refrigerant discharged from the compressor 1 is condensed in the outdoor heat exchanger 4 and flows into one of the indoor heat exchangers 10b which is divided into two in a two-phase state. The refrigerant is further condensed in 10b, and the heat cooled and dehumidified in 10a is reheated by the heat of condensation. Refrigerant exiting 10b is pipe 13
Flow into. Since the two-way valve A is closed, the refrigerant flows into the pipe 14 through the bleed port 16 (shown in FIG. 2) in the two-way valve A. At this time, the bleed port 16 serves as a throttle to adiabatically expand the refrigerant and reduce the pressure. The low-temperature, low-pressure refrigerant flowing from the pipe 14 into the heat exchanger 10a takes heat from the air sucked into the air conditioner by the heat of evaporation, and the air is cooled and dehumidified.
【００２４】二方弁Ａ１２と、室内熱交換器の蒸発側１
０ａ入口との間に本発明による螺旋状流路１５が設けら
れている。螺旋状流路１５はパイプを螺旋状に巻いたも
のであり、鉛直方向上側から見た図を図１（ｂ）に，斜
視図を図１（ｃ）に示す。本図ではコイルの巻数は２回
であるが巻回数は任意である。定性的には巻回数が多い
方が騒音低減の効果が大きいが、スペース，必要とされ
る低減幅などの要素を考慮して回数を決定する。また巻
半径（図５中に図示）は小さい方が遠心力による撹拌効
果が大きい。巻パイプの形状としては円形の他に例えば
楕円形等でも良い。さらに螺旋状流路１５の螺旋状に巻
かれた内側の空間に粘弾性の高い材料、例えばパテ，ゴ
ム等を詰め込むと騒音低減の効果が大きい。Two-way valve A12 and evaporation side 1 of the indoor heat exchanger
The spiral channel 15 according to the present invention is provided between the inlet 0a and the inlet 0a. The spiral flow path 15 is formed by spirally winding a pipe. A view seen from the upper side in the vertical direction is shown in FIG. 1 (b), and a perspective view is shown in FIG. 1 (c). In this figure, the number of turns of the coil is two, but the number of turns is arbitrary. Qualitatively, the larger the number of windings, the greater the effect of noise reduction, but the number of windings is determined in consideration of factors such as space and required reduction width. Further, the smaller the winding radius (illustrated in FIG. 5 ), the greater the stirring effect by the centrifugal force. The shape of the winding pipe may be, for example, an elliptical shape instead of a circular shape. Further, if a material having high viscoelasticity, such as putty or rubber, is packed in the spirally wound inner space of the spiral flow path 15, the effect of reducing noise is great.
【００２５】室内側熱交換器は図１では１０ａ，１０ｂ
のように完全に分離されているが、１つの熱交換器でフ
ィンにスリットや切れ目を入れて熱的に分割されたもの
でもよい。また分割された熱交換器のうち蒸発側１０ａ
は空気の通風路に対して風上側に凝縮側１０ｂは風下側
に直列に置かれている。除湿運転時の除湿効果を考慮す
るとこのような構成がよいが、機器構成上の都合によっ
ては１０ａと１０ｂを並列に置いてもよい。The indoor heat exchangers are shown as 10a and 10b in FIG.
However, the fins may be divided into slits or cuts by one heat exchanger to be thermally divided. Also, of the divided heat exchangers, the evaporation side 10a
Is arranged in series on the windward side of the air passage and on the leeward side of the condenser side 10b. Such a configuration is preferable in consideration of the dehumidifying effect during the dehumidifying operation, but 10a and 10b may be placed in parallel depending on the convenience of the device configuration.
【００２６】また図１において除湿用の絞りは二方弁Ａ
内のブリードポートを用いたが、二方弁Ａと並列につな
がれたキャピラリチューブを用いてもよい。さらに二方
弁Ａの代わりに電動膨張弁等の流量調節弁を用いてもよ
い。In FIG. 1, the dehumidifying throttle is a two-way valve A.
Although the inner bleed port is used, a capillary tube connected in parallel with the two-way valve A may be used. Further, instead of the two-way valve A, a flow control valve such as an electric expansion valve may be used.
【００２７】図３は本発明の別の実施例を示したもので
ある。本実施例のサイクル構成は図１に示した第１の実
施例と同じであり、室内側熱交換器１０ａと１０ｂとそ
の間の配管部分のみ図３に示した。第１の実施例と同様
に二方弁Ａ１２（ブリードポート内蔵）の開閉により冷
暖房と除湿運転を切り換える。FIG. 3 shows another embodiment of the present invention. The cycle configuration of the present embodiment is the same as that of the first embodiment shown in FIG. 1, and only the indoor heat exchangers 10a and 10b and the piping portion between them are shown in FIG. Similar to the first embodiment, the heating / cooling and dehumidifying operation are switched by opening / closing the two-way valve A12 (built-in bleed port).
【００２８】本実施例の特徴は、螺旋状流路１５の巻方
向が途中で反対になることである。こうすることによっ
て螺旋状流路内を流れる冷媒に対する撹拌作用を高める
ことができる。The feature of this embodiment is that the spiral flow paths 15 are wound in opposite directions. By doing so, the stirring action on the refrigerant flowing in the spiral flow path can be enhanced.
【００２９】図４は本発明のさらに別の実施例を示した
ものである。螺旋状流路１５を形成するパイプを同一平
面内で巻いたものであり、機器構成の関係で厚さ方向に
スペースが取れないような場合に有効である。またゴム
製のシート等で螺旋状流路部分をサンドイッチ状に挟む
ことにより騒音低減の効果を大きくすることができる。FIG. 4 shows another embodiment of the present invention. The pipe forming the spiral flow path 15 is wound in the same plane, which is effective when space cannot be secured in the thickness direction due to the device configuration. Further, the effect of noise reduction can be enhanced by sandwiching the spiral flow path portion in a sandwich shape with a rubber sheet or the like.
【００３０】図６は本発明のさらに別の実施例を示した
ものである。絞りの下流側のパイプを２本に分岐させ、
その各々を螺旋状に巻いたものである。１本の太いパイ
プで巻くのに比べて剛性が小さくなるため振動しやすく
なるが、この部分にパテやゴム等の制振材料を付加する
ことによって振動を吸収する効果が大きい。従ってこの
部分より先には振動が伝わりにくくなる。分岐の数は２
本に限定する必要はなくもっと多数でもよいが、あまり
多いとコストが高くなる。また請求項４のように絞りの
上流側にも螺旋状の巻パイプを設けた場合にも、本実施
例のように複数のパイプに分岐させそれぞれのパイプを
巻いてもよい。FIG. 6 shows still another embodiment of the present invention. Split the pipe on the downstream side of the throttle into two,
Each of them is spirally wound. Compared to the case of winding with one thick pipe, the rigidity is smaller, so that it is more likely to vibrate, but by adding a damping material such as putty or rubber to this part, the effect of absorbing the vibration is great. Therefore, vibration is less likely to be transmitted before this portion. The number of branches is 2
There is no need to limit the number to books, and a larger number may be used, but too many will increase the cost. Further, even when a spiral winding pipe is provided on the upstream side of the throttle as in claim 4, the pipe may be branched into a plurality of pipes and each pipe may be wound as in the present embodiment.
【００３１】以上の各実施例においては、螺旋状流路１
５は冷媒の流れ方向が水平面内かそれに近い角度になる
ように設置されている。設置角度は必ずしも水平に限る
必要はない。例えば冷媒の流れ方向が垂直面内になるよ
うにしてもよい。ただし螺旋状流路の巻半径（図５中に
図示）が大きいと、重力の影響で二相流中の気相と液相
の分離が進んでしまう場合がある。巻半径がある閾値よ
りも小さければ遠心力による撹拌効果の方が重力の影響
よりも大きくなり本発明の効果が現われるので、巻半径
はその閾値以下としなければならない。ただし遠心力に
よる撹拌効果と重力の影響との大小関係は同じ巻半径で
あってもそこを流れる冷媒の流量によって変わるので、
流量変化の大きい装置に適用する場合は水平か水平に近
い角度に設置した方が安全である。In each of the above embodiments, the spiral flow path 1
5 is installed so that the flow direction of the refrigerant is in a horizontal plane or at an angle close to it. The installation angle does not necessarily have to be horizontal. For example, the flow direction of the coolant may be in a vertical plane. However, if the winding radius of the spiral flow path (shown in FIG. 5 ) is large, the separation of the gas phase and the liquid phase in the two-phase flow may proceed due to the influence of gravity. If the winding radius is smaller than a certain threshold value, the stirring effect due to the centrifugal force is larger than the influence of gravity and the effect of the present invention appears. Therefore, the winding radius must be below the threshold value. However, the magnitude relationship between the stirring effect due to centrifugal force and the effect of gravity will change depending on the flow rate of the refrigerant flowing there even if the winding radius is the same.
When applied to a device with large flow rate changes, it is safer to install it horizontally or at an angle close to horizontal.
【００３２】[0032]
【発明の効果】従って本発明によれば、冷凍サイクルの
冷媒の蒸発熱と凝縮熱を利用した除湿運転可能な空気調
和機において、除湿運転時に冷媒が二相状態で除湿用の
絞りを通過することによって生じる圧力脈動による騒音
の発生を効果的な制振構造を持つことによって抑えるこ
とができる。Therefore, according to the present invention, in an air conditioner capable of dehumidifying operation utilizing heat of vaporization and condensation of refrigerant in a refrigeration cycle, the refrigerant passes through a dehumidifying throttle in a two-phase state during dehumidifying operation. It is possible to suppress the generation of noise due to the pressure pulsation that is caused by the effective vibration damping structure.
【００３３】また本発明による円形流路内の冷媒の流れ
を模式的に図５に示す。これは螺旋状流路部の垂直面内
の断面図である。パイプ内を冷媒（一般には流体）が流
れると遠心力によって巻の中心からみて外向きの力が生
じ、主流方向に対して垂直な面内に２次流れが誘起され
る。この２次流れによって流体は撹拌され、二相流は気
液が混ざりあって均質な流れとなる。この時には二相が
分離した状態に比較して圧力の変動が少なくパイプや熱
交換器を加振することが少ない。Further the flow of the refrigerant of the circular flow path according to the present invention is schematically shown in FIG. This is a cross-sectional view in the vertical plane of the spiral flow path portion. When a refrigerant (generally a fluid) flows in the pipe, a centrifugal force causes an outward force when viewed from the center of the winding, and a secondary flow is induced in a plane perpendicular to the main flow direction. The fluid is agitated by this secondary flow, and the two-phase flow is a homogeneous flow due to the mixture of gas and liquid. At this time, compared to the state where the two phases are separated, the fluctuation of the pressure is small and the pipe and the heat exchanger are rarely excited.
【図１】本発明の１実施例を示す冷凍サイクル系統図で
ある。FIG. 1 is a refrigeration cycle system diagram showing one embodiment of the present invention.
【図２】ブリードポートを内蔵した二方弁の内部構造を
示す断面図である。FIG. 2 is a cross-sectional view showing the internal structure of a two-way valve containing a bleed port.
【図３】本発明の別の実施例を示す図である。FIG. 3 is a diagram showing another embodiment of the present invention.
【図４】本発明のさらに別の実施例を示す図である。FIG. 4 is a diagram showing yet another embodiment of the present invention.
【図５】螺旋状流路内の流れに誘起される２次流れを説
明する図である。FIG. 5 illustrates a secondary flow induced by a flow in a spiral channel .
It is a diagram for Akira.
【図６】本発明のさらに別の実施例を示す図である。FIG. 6 is a diagram showing yet another embodiment of the present invention .
【図７】冷凍サイクルを利用した除湿運転可能な空気調
和機の従来の冷凍サイクル系統図FIG. 7 is a conventional refrigeration cycle system diagram of an air conditioner capable of dehumidifying operation using a refrigeration cycle.
フロントページの続き (72)発明者 小曽戸 荘一 栃木県下都賀郡大平町大字富田800番地 株式会社日立製作所リビング機器事業部 内 (72)発明者 太田 幸夫 栃木県下都賀郡大平町大字富田709番地 の２株式会社日立栃木エレクトロニクス 内 (72)発明者 横山 英範 栃木県下都賀郡大平町大字富田800番地 株式会社日立製作所リビング機器事業部 内 (72)発明者 千葉 敏昭 栃木県下都賀郡大平町大字富田800番地 株式会社日立製作所リビング機器事業部 内 (56)参考文献 特開 平２−183777（ＪＰ，Ａ) 特開 昭58−49879（ＪＰ，Ａ) 特開 平１−181046（ＪＰ，Ａ) 特開 平５−18630（ＪＰ，Ａ) 実開 昭54−159348（ＪＰ，Ｕ) 実開 平３−42976（ＪＰ，Ｕ) 実開 平１−140465（ＪＰ，Ｕ) 実開 平１−98381（ＪＰ，Ｕ) 実開 昭61−61385（ＪＰ，Ｕ) 実開 昭54−141547（ＪＰ，Ｕ) 実開 昭56−10267（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 41/00 F25B 13/00 F25B 29/00 Continuation of the front page (72) Inventor Shoichi Kozodo 800 Tomita, Ohira-cho, Shimotsuga-gun, Tochigi Prefecture Living Equipment Division, Hitachi, Ltd. 2 Hitachi Tochigi Electronics Co., Ltd. (72) Inventor Hidenori Yokoyama 800 Tomita, Ohira-cho, Shimotsuga-gun, Tochigi Prefecture Living Equipment Division, Hitachi, Ltd. (72) Toshiaki Chiba 800 Tomita, Ohira-machi, Shimotsuga-gun, Tochigi Prefecture Living Equipment Division, Hitachi, Ltd. (56) Reference JP-A-2-183777 (JP, A) JP-A-58-49879 (JP, A) JP-A-181046 (JP, A) JP-A 5-18630 (JP, A) Actual Open Sho 54-159348 (JP, U) Actual Open Flat 3-42976 (JP, U) Actual Open Flat 1-140465 (JP, U) Actual Open Flat 1-98381 (JP, U) Actually open 61-61385 (JP, U) Actually open 54-141547 (JP, U) Actually open 56- 10267 (JP, U) (58) Fields surveyed (Int.Cl. 7 , DB name) F25B 41/00 F25B 13/00 F25B 29/00
Claims (4)
換器と、室内側に配置された、除湿運転時に絞りとして
動作する除湿用絞り装置、及びこの絞り装置を介して接
続され除湿運転時に凝縮側熱交換器として動作する熱交
換器と蒸発側熱交換器として動作する熱交換器とを備え
た空気調和機において、除湿運転時の冷媒の流れ方向か
ら見て、前記除湿用絞り装置の下流側のパイプを複数に
分岐させ、その各々を螺旋状に巻いた螺旋状流路部分を
備えた空気調和機。1. A compressor and an outdoor heat exchanger arranged on the outdoor side.
As a throttle when operating in dehumidifying mode, located on the indoor side
A dehumidifying squeezing device that operates and a connection via this squeezing device.
Heat exchanger that continues to operate as a condensation side heat exchanger during dehumidification operation
Equipped with a heat exchanger and a heat exchanger operating as an evaporation side heat exchanger
In the air conditioner, when viewed from the flow direction of the refrigerant during the dehumidifying operation , a plurality of pipes on the downstream side of the dehumidifying expansion device are provided.
An air conditioner provided with a spiral flow path part that is branched and spirally wound .
部に小孔を設けた二方弁を前記螺旋状流路の上流に備
え、二方弁内の小孔を除湿用の絞りとして用いることを
特徴とする空気調和機。2. A air conditioner according to claim 1, comprising a two-way valve which is provided inside the small hole upstream of the prior SL spiral flow path, stop for dehumidifying the small holes in the two-way valve An air conditioner characterized by being used as.
閉から全開まで連続的あるいは段階的に調節可能な流量
調節弁を前記螺旋状流路の上流に備えたことを特徴とす
る空気調和機。3. A air conditioner according to claim 1, characterized by comprising a continuously or stepwise adjustable flow control valve to the fully open from the fully closed upstream of the prior SL spiral flow path Air conditioner.
機において、前記螺旋状流路を除湿用絞りの上流にも設
けたことを特徴とする空気調和機。4. The method of claim 1 in an air conditioner according to to 3 any one of the previous SL air conditioner, characterized in that the spiral flow path is provided also upstream of the diaphragm dehumidification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27159793A JP3435759B2 (en) | 1993-10-29 | 1993-10-29 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27159793A JP3435759B2 (en) | 1993-10-29 | 1993-10-29 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07120105A JPH07120105A (en) | 1995-05-12 |
| JP3435759B2 true JP3435759B2 (en) | 2003-08-11 |
Family
ID=17502300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27159793A Expired - Lifetime JP3435759B2 (en) | 1993-10-29 | 1993-10-29 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3435759B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2626735B2 (en) * | 1987-12-21 | 1997-07-02 | 株式会社リコー | Developing device |
| JP2001208371A (en) * | 2000-01-26 | 2001-08-03 | Matsushita Electric Ind Co Ltd | Heat exchanger unit of air conditioner |
| KR100425734B1 (en) * | 2001-12-15 | 2004-04-01 | 엘지전자 주식회사 | Connection pipe for damping vibration of compressor |
| JP4904970B2 (en) * | 2006-08-01 | 2012-03-28 | ダイキン工業株式会社 | Refrigeration equipment |
| JP5137494B2 (en) * | 2007-08-22 | 2013-02-06 | 日立アプライアンス株式会社 | Equipment and air conditioner using refrigeration cycle |
| CN112856866B (en) * | 2021-01-22 | 2023-03-21 | 青岛海尔空调器有限总公司 | Throttling element, throttling liquid-separating assembly and air conditioner indoor unit |
-
1993
- 1993-10-29 JP JP27159793A patent/JP3435759B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07120105A (en) | 1995-05-12 |
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