JP2014152999A - Air conditioner - Google Patents

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JP2014152999A
JP2014152999A JP2013023441A JP2013023441A JP2014152999A JP 2014152999 A JP2014152999 A JP 2014152999A JP 2013023441 A JP2013023441 A JP 2013023441A JP 2013023441 A JP2013023441 A JP 2013023441A JP 2014152999 A JP2014152999 A JP 2014152999A
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refrigerant
heat exchanger
solenoid valve
indoor heat
dehumidifying
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Shinji Nagaoka
伸二 長岡
Keigo Takemoto
圭吾 竹本
Yoichi Onuma
洋一 大沼
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Daikin Industries Ltd
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Daikin Industries Ltd
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Abstract

PROBLEM TO BE SOLVED: To solve a problem that when an R32 refrigerant is used and a dehumidification solenoid valve having the same bleed amount as that of a conventional one is used, reheating dehumidification operation cannot be performed appropriately.SOLUTION: An air conditioner includes a refrigerant circuit formed by annularly interconnecting a compressor, an outdoor heat exchanger, a decompression device, a first indoor heat exchanger, a dehumidification solenoid valve and a second indoor heat exchanger, and performs a dehumidification operation by making the decompression device in an open state and the dehumidification solenoid valve in a restricted state. As a refrigerant, an R32 refrigerant is used, and when the dehumidification solenoid valve is in the restricted state and a pressure difference between the upstream side and the downstream side of the dehumidification solenoid valve is 98 (kPa), a bleed flow rate is 2.0-8.0 (L/min).

Description

本発明は、冷媒としてＲ３２冷媒を使用する空気調和機に関するものである。   The present invention relates to an air conditioner that uses R32 refrigerant as a refrigerant.

空気調和機には、圧縮機、室外熱交換器、減圧器、第１室内熱交換器、除湿用電磁弁および第２室内熱交換器が環状に接続された冷媒回路を備え、減圧器を開状態にして除湿用電磁弁を絞り状態にすることにより再熱除湿運転を行うものがある。   The air conditioner includes a refrigerant circuit in which a compressor, an outdoor heat exchanger, a decompressor, a first indoor heat exchanger, a dehumidifying solenoid valve, and a second indoor heat exchanger are connected in an annular shape, and the decompressor is opened. Some reheat dehumidification operations are performed by bringing the dehumidifying solenoid valve into a throttled state.

上記の空気調和機では、再熱除湿運転時に、圧縮機から吐出された高圧冷媒が、室外熱交換器、全開状態の減圧器、第１室内熱交換器、絞り状態の除湿用電磁弁、第２室内熱交換器を循環して、冷媒が凝縮される第１室内熱交換器で室内空気を加熱する一方、冷媒が蒸発する第２室内熱交換器で室内空気を除湿、冷却することによって、室内温度を下げることなく除湿を行う。   In the above air conditioner, during the reheat dehumidification operation, the high-pressure refrigerant discharged from the compressor is converted into an outdoor heat exchanger, a fully opened decompressor, a first indoor heat exchanger, a throttled dehumidifying solenoid valve, By circulating through the two indoor heat exchangers, the indoor air is heated by the first indoor heat exchanger in which the refrigerant is condensed, while the indoor air is dehumidified and cooled by the second indoor heat exchanger in which the refrigerant evaporates, Dehumidify without lowering the room temperature.

特開２００６−１６２１９７JP 2006-162197 A

上記の空気調和機では、冷媒としてＲ４１０Ａ冷媒が使用されるのが一般的であって、除湿用電磁弁が絞り状態であるときのブリード流量が、再熱除湿運転時において第２室内熱交換器に供給する必要のあるＲ４１０Ａ冷媒の流量に基づいて決められていた。したがって、上記の空気調和機において、冷媒としてＲ３２を使用するとともに、従来と同一のブリード流量の除湿用電磁弁を使用した場合には、Ｒ３２冷媒がＲ４１０Ａ冷媒と比べて圧力損失が低い冷媒であることから、再熱除湿運転を適正に行うことができないという問題がある。   In the above air conditioner, the R410A refrigerant is generally used as the refrigerant, and the bleed flow rate when the dehumidifying solenoid valve is in the throttle state is the second indoor heat exchanger during the reheat dehumidifying operation. It was determined based on the flow rate of the R410A refrigerant that needs to be supplied to the refrigerant. Therefore, in the above air conditioner, when R32 is used as a refrigerant and a dehumidifying solenoid valve having the same bleed flow rate as the conventional one is used, the R32 refrigerant is a refrigerant having a lower pressure loss than the R410A refrigerant. For this reason, there is a problem that the reheat dehumidification operation cannot be performed properly.

そこで、本発明の目的は、Ｒ３２冷媒を使用するとともに再熱除湿運転を適正に行うことができる空気調和機を提供することである。   Then, the objective of this invention is providing the air conditioner which can perform a reheat dehumidification driving | operation appropriately while using R32 refrigerant | coolant.

第１の発明にかかる空気調和機は、圧縮機、室外熱交換器、減圧器、第１室内熱交換器、除湿用電磁弁および第２室内熱交換器が環状に接続された冷媒回路を備え、前記減圧器を開状態にして前記除湿用電磁弁を絞り状態にすることにより除湿運転を行う空気調和機であって、冷媒としてＲ３２冷媒が使用されるとともに、前記除湿用電磁弁が絞り状態であって、前記除湿用電磁弁の上流側と下流側の差圧が９８（ｋＰａ）のときのブリード流量が２．０〜８．０（Ｌ/ｍｉｎ）であることを特徴とする。   An air conditioner according to a first invention includes a refrigerant circuit in which a compressor, an outdoor heat exchanger, a decompressor, a first indoor heat exchanger, a dehumidifying solenoid valve, and a second indoor heat exchanger are connected in a ring shape. An air conditioner that performs a dehumidifying operation by opening the pressure reducer and bringing the dehumidifying solenoid valve into a throttled state, wherein R32 refrigerant is used as a refrigerant and the dehumidifying solenoid valve is in a throttled state The bleed flow rate when the differential pressure between the upstream side and the downstream side of the dehumidifying solenoid valve is 98 (kPa) is 2.0 to 8.0 (L / min).

この空気調和機では、冷媒としてＲ３２冷媒が使用されるとともに、除湿用電磁弁を絞り状態であるときのブリード流量が、再熱除湿運転時において第２室内熱交換器に供給する必要のあるＲ３２冷媒の流量（２．０〜８．０（Ｌ/ｍｉｎ））に基づいて決められているので、再熱除湿運転を適正に行うことができる。   In this air conditioner, R32 refrigerant is used as the refrigerant, and the bleed flow rate when the dehumidifying solenoid valve is in the throttled state needs to be supplied to the second indoor heat exchanger during the reheat dehumidifying operation. Since it is determined based on the flow rate of the refrigerant (2.0 to 8.0 (L / min)), the reheat dehumidification operation can be performed appropriately.

第２の発明にかかる空気調和機は、第１の発明にかかる空気調和機において、前記除湿用電磁弁が、前記第１室内熱交換器と前記第２室内熱交換器との間に、１つ配置されることを特徴とする。   An air conditioner according to a second aspect of the present invention is the air conditioner according to the first aspect, wherein the dehumidifying solenoid valve is between the first indoor heat exchanger and the second indoor heat exchanger. It is characterized by being arranged.

この空気調和機では、冷媒としてＲ３２冷媒が使用されるので、例えば大きい能力機種の空気調和機の場合でも、再熱除湿運転時において第２室内熱交換器に供給する必要のあるＲ３２冷媒の流量は、冷媒としてＲ４１０Ａ冷媒が使用される場合と比べて少ない。したがって、冷媒としてＲ４１０Ａ冷媒が使用される場合のように、２つの除湿用電磁弁を第１室内熱交換器と第２室内熱交換器との間に並列に配置しなくても、１つの除湿用電磁弁を第１室内熱交換器と第２室内熱交換器との間に配置するだけでよい。   In this air conditioner, since the R32 refrigerant is used as the refrigerant, the flow rate of the R32 refrigerant that needs to be supplied to the second indoor heat exchanger during the reheat dehumidifying operation, for example, even in the case of an air conditioner of a large capacity model. Is less than the case where the R410A refrigerant is used as the refrigerant. Therefore, as in the case where the R410A refrigerant is used as the refrigerant, one dehumidification is possible without arranging two dehumidifying solenoid valves in parallel between the first indoor heat exchanger and the second indoor heat exchanger. It is only necessary to arrange the solenoid valve for operation between the first indoor heat exchanger and the second indoor heat exchanger.

第３の発明にかかる空気調和機では、第１または第２の発明にかかる空気調和機において、前記除湿用電磁弁が絞り状態であって、前記除湿用電磁弁の上流側と下流側の差圧が９８（ｋＰａ）のときのブリード流量が４．０〜６．０（Ｌ/ｍｉｎ）であることを特徴とする。   In the air conditioner pertaining to the third invention, in the air conditioner pertaining to the first or second invention, the dehumidifying solenoid valve is in a throttled state, and the difference between the upstream side and the downstream side of the dehumidifying solenoid valve. The bleed flow rate when the pressure is 98 (kPa) is 4.0 to 6.0 (L / min).

この空気調和機では、除湿用電磁弁が絞り状態であるときのブリード流量が４．０〜６．０（Ｌ/ｍｉｎ）であるので、再熱除湿運転時において室内温度をほとんど下げずに除湿を行うことができる。   In this air conditioner, since the bleed flow rate is 4.0 to 6.0 (L / min) when the dehumidifying solenoid valve is in the throttle state, the dehumidification is performed without substantially reducing the room temperature during the reheat dehumidifying operation. It can be performed.

以上の説明に述べたように、本発明によれば、以下の効果が得られる。   As described above, according to the present invention, the following effects can be obtained.

第１の発明では、冷媒としてＲ３２冷媒が使用されるとともに、除湿用電磁弁が絞り状態であるときのブリード流量が、再熱除湿運転時において第２室内熱交換器に供給する必要のあるＲ３２冷媒の流量（２．０〜８．０（Ｌ/ｍｉｎ））に基づいて決められているので、再熱除湿運転を適正に行うことができる。   In the first invention, R32 refrigerant is used as the refrigerant, and the bleed flow rate when the dehumidifying solenoid valve is in the throttle state needs to be supplied to the second indoor heat exchanger during the reheat dehumidifying operation. Since it is determined based on the flow rate of the refrigerant (2.0 to 8.0 (L / min)), the reheat dehumidification operation can be performed appropriately.

第２の発明では、冷媒としてＲ３２冷媒が使用されるので、例えば大きい能力機種の空気調和機の場合でも、再熱除湿運転時において第２室内熱交換器に供給する必要のあるＲ３２冷媒の流量は、冷媒としてＲ４１０Ａ冷媒が使用される場合と比べて少ない。したがって、冷媒としてＲ４１０Ａ冷媒が使用される場合のように、２つの除湿用電磁弁を第１室内熱交換器と第２室内熱交換器との間に並列に配置しなくても、１つの除湿用電磁弁を第１室内熱交換器と第２室内熱交換器との間に配置するだけでよい。   In the second invention, since the R32 refrigerant is used as the refrigerant, the flow rate of the R32 refrigerant that needs to be supplied to the second indoor heat exchanger during the reheat dehumidifying operation even in the case of an air conditioner of a large capacity model, for example. Is less than the case where the R410A refrigerant is used as the refrigerant. Therefore, as in the case where the R410A refrigerant is used as the refrigerant, one dehumidification is possible without arranging two dehumidifying solenoid valves in parallel between the first indoor heat exchanger and the second indoor heat exchanger. It is only necessary to arrange the solenoid valve for operation between the first indoor heat exchanger and the second indoor heat exchanger.

第３の発明では、除湿用電磁弁が絞り状態であるときのブリード流量が４．０〜６．０（Ｌ/ｍｉｎ）であるので、再熱除湿運転時において室内温度をほとんど下げずに除湿を行うことができる。   In the third invention, since the bleed flow rate when the dehumidifying solenoid valve is in the throttle state is 4.0 to 6.0 (L / min), the dehumidification is performed without substantially reducing the room temperature during the reheat dehumidifying operation. It can be performed.

本発明の実施形態に係る空気調和機の回路図である。1 is a circuit diagram of an air conditioner according to an embodiment of the present invention. 本発明の実施形態に係る除湿用電磁弁の構成を示す断面図である。It is sectional drawing which shows the structure of the electromagnetic valve for dehumidification which concerns on embodiment of this invention. 除湿用電磁弁の弁座のテーパ面の構成を示す図である。It is a figure which shows the structure of the taper surface of the valve seat of a solenoid valve for dehumidification.

以下、本発明の実施の形態に係る空気調和機について説明する。   Hereinafter, an air conditioner according to an embodiment of the present invention will be described.

＜空気調和機１０の全体構成＞
図１に示すように、本実施形態の空気調和機１０は、圧縮機１、四路弁２、室外熱交換器３、減圧器の一例としての膨張弁４、第１室内熱交換器５、除湿用電磁弁６および第２室内熱交換器７が環状に接続された冷媒回路を備えている。また、空気調和機１０は、室外熱交換器３の近傍に配置された室外ファン８と、第１室内熱交換器５及び第２室内熱交換器７の近傍に配置された室内ファン９を備えている。 <Overall configuration of the air conditioner 10>
As shown in FIG. 1, the air conditioner 10 of this embodiment includes a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an expansion valve 4 as an example of a decompressor, a first indoor heat exchanger 5, A dehumidifying solenoid valve 6 and a second indoor heat exchanger 7 are provided with a refrigerant circuit connected in an annular shape. The air conditioner 10 includes an outdoor fan 8 disposed in the vicinity of the outdoor heat exchanger 3 and an indoor fan 9 disposed in the vicinity of the first indoor heat exchanger 5 and the second indoor heat exchanger 7. ing.

空気調和機１０において、冷房運転時は、除湿用電磁弁６を開いた状態で四路弁２が実線の位置に切り換えられ、圧縮機１から吐出された冷媒は、室外熱交換器３、膨張弁４、第１室内熱交換器５、除湿用電磁弁６、第２室内熱交換器７を介して圧縮機１の吸込側に戻る。この冷媒回路において、凝縮器として働く室外熱交換器３で放熱し、蒸発器として働く第１室内熱交換器５及び第２室内熱交換器７で室内空気を冷却して冷房を行う。一方、暖房運転時は、除湿用電磁弁６を開いた状態で四路弁２が点線の位置に切り換えられ、冷房運転時とは逆の冷凍サイクルで暖房を行う。   In the air conditioner 10, during the cooling operation, the four-way valve 2 is switched to the solid line position with the dehumidifying solenoid valve 6 opened, and the refrigerant discharged from the compressor 1 is transferred to the outdoor heat exchanger 3, It returns to the suction side of the compressor 1 through the valve 4, the first indoor heat exchanger 5, the dehumidifying electromagnetic valve 6, and the second indoor heat exchanger 7. In this refrigerant circuit, heat is radiated by the outdoor heat exchanger 3 that functions as a condenser, and the first indoor heat exchanger 5 and the second indoor heat exchanger 7 that function as evaporators cool the indoor air. On the other hand, during the heating operation, the four-way valve 2 is switched to the dotted line position while the dehumidifying electromagnetic valve 6 is opened, and heating is performed in the refrigeration cycle opposite to that during the cooling operation.

そして、再熱除湿運転では、膨張弁４を開くと共に除湿用電磁弁６を閉じて絞り状態にし、さらに四路弁２が実線の位置に切り換えられ、圧縮機１から吐出された冷媒は、室外熱交換器３、膨張弁４、第１室内熱交換器５、除湿用電磁弁６、第２室内熱交換器７を介して圧縮機１の吸込側に戻る。この冷媒回路において、室外熱交換器３と第１室内熱交換器５が凝縮器として働く一方、第２室内熱交換器７が蒸発器として働く。したがって、第１室内熱交換器５で室内空気を温めつつ第２室内熱交換器７で除湿と冷却が行われて、室内温度を下げずに除湿を行う。   In the reheat dehumidifying operation, the expansion valve 4 is opened and the dehumidifying electromagnetic valve 6 is closed to a throttle state, and the four-way valve 2 is switched to the position shown by the solid line, so that the refrigerant discharged from the compressor 1 It returns to the suction side of the compressor 1 through the heat exchanger 3, the expansion valve 4, the first indoor heat exchanger 5, the dehumidifying electromagnetic valve 6, and the second indoor heat exchanger 7. In this refrigerant circuit, the outdoor heat exchanger 3 and the first indoor heat exchanger 5 function as a condenser, while the second indoor heat exchanger 7 functions as an evaporator. Therefore, dehumidification and cooling are performed in the second indoor heat exchanger 7 while warming the indoor air in the first indoor heat exchanger 5, and dehumidification is performed without lowering the indoor temperature.

図２（ａ）は、除湿用電磁弁６が開状態である場合であって、図２（ｂ）は、除湿用電磁弁６が絞り状態（閉状態）である場合である。除湿用電磁弁６は、図２に示すように、弁本体２０と、開閉機構３０とを備えている。弁本体２０は、弁室１９とその弁室１９内の下部に形成された弁座１２とを有する円筒部１１と、弁座１２のテーパ面１２ａに対向するテーパ面１３ｂを有する弁体１３と、円筒部１１の上部に内嵌され、弁体１３の軸部１３ａを軸方向に案内するガイド部１４とを有している。円筒部１１には、入口側通路３１が接続された入口１１ａと、出口側通路３２が接続された出口１１ｂを設けている。   2A shows a case where the dehumidifying electromagnetic valve 6 is in an open state, and FIG. 2B shows a case where the dehumidifying electromagnetic valve 6 is in a throttled state (closed state). As shown in FIG. 2, the dehumidifying electromagnetic valve 6 includes a valve body 20 and an opening / closing mechanism 30. The valve body 20 includes a cylindrical portion 11 having a valve chamber 19 and a valve seat 12 formed in a lower portion of the valve chamber 19, and a valve body 13 having a tapered surface 13b facing the tapered surface 12a of the valve seat 12. The guide portion 14 is fitted in the upper portion of the cylindrical portion 11 and guides the shaft portion 13a of the valve body 13 in the axial direction. The cylindrical portion 11 is provided with an inlet 11a to which the inlet side passage 31 is connected and an outlet 11b to which the outlet side passage 32 is connected.

また、開閉機構３０は、弁体１３の軸部１３ａの外側に配置されたコイルバネ１５と、弁体１３の軸部１３ａの端に固定された円筒形状のプランジャ１６と、プランジャ１６内に配置された電磁ガイド１７と、プランジャ１６と電磁ガイド１７の外側に配置された電磁コイル１８とを有している。コイルバネ１５は、プランジャ１６を電磁ガイド１７側に付勢している。   The opening / closing mechanism 30 is disposed in the plunger 16, a coil spring 15 disposed outside the shaft portion 13 a of the valve body 13, a cylindrical plunger 16 fixed to the end of the shaft portion 13 a of the valve body 13, and the plunger 16. An electromagnetic guide 17, a plunger 16, and an electromagnetic coil 18 disposed outside the electromagnetic guide 17. The coil spring 15 biases the plunger 16 toward the electromagnetic guide 17.

そして、弁座１２のテーパ面１２ａには、図３に示すように、複数の溝（ブリード溝）２１が設けられている。したがって、図２（ｂ）のように、除湿用電磁弁６が絞り状態（閉状態）である場合に、弁体１３のテーパ面１３ｂと弁座１２のテーパ面１２ａとの間には、弁座１２のテーパ面１２ａにある複数の溝２１によって、小さい隙間の冷媒絞り流路が構成される。   And the taper surface 12a of the valve seat 12 is provided with a plurality of grooves (bleed grooves) 21 as shown in FIG. Therefore, as shown in FIG. 2B, when the dehumidifying electromagnetic valve 6 is in the throttled state (closed state), there is no valve between the tapered surface 13b of the valve body 13 and the tapered surface 12a of the valve seat 12. A plurality of grooves 21 in the tapered surface 12a of the seat 12 constitute a refrigerant constriction flow path with a small gap.

上記のように構成された除湿用電磁弁６において、電磁コイル１８に通電されると、電磁ガイド１７とプランジャ１６との間に電磁力が発生して、コイルバネ１５の付勢力に反してプランジャ１６が下方に移動して、弁体１３のテーパ面１３ｂが弁座１２のテーパ面１２ａに当接する。したがって、弁体１３のテーパ面１３ｂと弁座１２のテーパ面１２ａとの間が閉鎖されるが、弁座１２のテーパ面１２ａにある複数の溝２１によって小さい隙間の冷媒絞り流路が構成される。よって、除湿用電磁弁６が、絞り状態（閉状態）となって、入口側通路３１が接続された入口１１ａと出口側通路３２が接続された出口１１ｂとが、弁座１２の複数の溝２１によって連通する。   In the dehumidifying electromagnetic valve 6 configured as described above, when the electromagnetic coil 18 is energized, an electromagnetic force is generated between the electromagnetic guide 17 and the plunger 16, and the plunger 16 against the urging force of the coil spring 15. Moves downward, and the tapered surface 13b of the valve body 13 contacts the tapered surface 12a of the valve seat 12. Therefore, the gap between the taper surface 13b of the valve body 13 and the taper surface 12a of the valve seat 12 is closed, but a plurality of grooves 21 in the taper surface 12a of the valve seat 12 form a small gap refrigerant throttle channel. The Therefore, the dehumidifying solenoid valve 6 is in a throttled state (closed state), and the inlet 11a to which the inlet side passage 31 is connected and the outlet 11b to which the outlet side passage 32 is connected are a plurality of grooves in the valve seat 12. 21 to communicate.

また、電磁コイル１８への通電が停止されると、電磁ガイド１７とプランジャ１６との間の電磁力がなくなるので、コイルバネ１５の付勢力によってプランジャ１６が上方に移動して、弁体１３のテーパ面１３ｂが弁座１２のテーパ面１２ａから離れる。したがって、除湿用電磁弁６が、開状態となって、入口側通路３１が接続された入口１１ａと出口側通路３２が接続された出口１１ｂとが連通する。   Further, when the energization of the electromagnetic coil 18 is stopped, the electromagnetic force between the electromagnetic guide 17 and the plunger 16 disappears, so that the plunger 16 moves upward by the biasing force of the coil spring 15 and the valve body 13 tapers. The surface 13 b is separated from the tapered surface 12 a of the valve seat 12. Accordingly, the dehumidifying electromagnetic valve 6 is opened, and the inlet 11a to which the inlet side passage 31 is connected and the outlet 11b to which the outlet side passage 32 is connected communicate with each other.

空気調和機１０では、冷媒としてＲ３２冷媒が使用されるが、除湿用電磁弁６のブリード流量（除湿用電磁弁６が絞り状態であって、除湿用電磁弁６の上流側と下流側の差圧が９８（ｋＰａ）のときの流量）が、２．０〜８．０（Ｌ/ｍｉｎ）となるように構成される。このように、除湿用電磁弁６のブリード流量が、再熱除湿運転時において第２室内熱交換器７に供給する必要のあるＲ３２冷媒の流量（２．０〜８．０（Ｌ/ｍｉｎ））に基づいて決められているので、再熱除湿運転を適正に行うことができる。   In the air conditioner 10, R32 refrigerant is used as the refrigerant. However, the bleed flow rate of the dehumidifying solenoid valve 6 (the difference between the upstream side and the downstream side of the dehumidifying solenoid valve 6 when the dehumidifying solenoid valve 6 is in a throttle state) is described. The flow rate when the pressure is 98 (kPa)) is configured to be 2.0 to 8.0 (L / min). Thus, the bleed flow rate of the dehumidifying solenoid valve 6 is such that the flow rate of the R32 refrigerant (2.0 to 8.0 (L / min)) that needs to be supplied to the second indoor heat exchanger 7 during the reheat dehumidification operation. ), The reheat dehumidification operation can be performed appropriately.

また、再熱除湿運転時において室内温度をほとんど下げずに除湿を行うことを考えると、除湿用電磁弁６のブリード流量（除湿用電磁弁６が絞り状態であって、除湿用電磁弁６の上流側と下流側の差圧が９８（ｋＰａ）のときの流量）が、４．０〜６．０（Ｌ/ｍｉｎ）となるように構成される方がよい。   Considering that dehumidification is performed without substantially reducing the room temperature during the reheat dehumidifying operation, the bleed flow rate of the dehumidifying solenoid valve 6 (the dehumidifying solenoid valve 6 is in the throttle state and the dehumidifying solenoid valve 6 The flow rate when the differential pressure between the upstream side and the downstream side is 98 (kPa) is preferably configured to be 4.0 to 6.0 (L / min).

＜本実施形態の空気調和機１０の特徴＞
本実施形態の空気調和機１０では、冷媒としてＲ３２冷媒が使用されるが、除湿用電磁弁６が絞り状態であるときのＲ３２冷媒についてのブリード量が、再熱除湿運転時において第２室内熱交換器７に供給する必要のあるＲ３２冷媒の流量（２．０〜８．０（Ｌ/ｍｉｎ））に基づいて決められているので、再熱除湿運転を適正に行うことができる。 <Characteristics of the air conditioner 10 of this embodiment>
In the air conditioner 10 of the present embodiment, the R32 refrigerant is used as the refrigerant, but the bleed amount of the R32 refrigerant when the dehumidifying solenoid valve 6 is in the throttle state is the second indoor heat during the reheat dehumidifying operation. Since it is determined based on the flow rate (2.0 to 8.0 (L / min)) of the R32 refrigerant that needs to be supplied to the exchanger 7, the reheat dehumidification operation can be performed appropriately.

本実施形態の空気調和機１０では、冷媒としてＲ３２冷媒が使用されるので、例えば大きい能力機種の空気調和機の場合でも、再熱除湿運転時において第２室内熱交換器７に供給する必要のあるＲ３２冷媒の流量は、冷媒としてＲ４１０Ａ冷媒が使用される場合と比べて少ない。したがって、冷媒としてＲ４１０Ａ冷媒が使用される場合のように、２つの除湿用電磁弁を第１室内熱交換器５と第２室内熱交換器７との間に並列に配置しなくても、１つの除湿用電磁弁６を第１室内熱交換器５と第２室内熱交換器７との間に配置するだけでよい。   In the air conditioner 10 of the present embodiment, since the R32 refrigerant is used as the refrigerant, for example, even in the case of an air conditioner of a large capacity model, it is necessary to supply the second indoor heat exchanger 7 during the reheat dehumidifying operation. The flow rate of a certain R32 refrigerant is small compared to the case where the R410A refrigerant is used as the refrigerant. Therefore, even if the two dehumidifying solenoid valves are not arranged in parallel between the first indoor heat exchanger 5 and the second indoor heat exchanger 7 as in the case where the R410A refrigerant is used as the refrigerant, 1 The two dehumidifying solenoid valves 6 need only be arranged between the first indoor heat exchanger 5 and the second indoor heat exchanger 7.

以上、本発明の実施形態について図面に基づいて説明したが、具体的な構成は、これらの実施形態に限定されるものでないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく特許請求の範囲によって示され、さらに特許請求の範囲と均等の意味及び範囲内でのすべての変更が含まれる。   As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes meanings equivalent to the scope of claims for patent and all modifications within the scope.

本発明を利用すれば、Ｒ３２冷媒を使用するとともに再熱除湿運転を適正に行うことができる。   If this invention is utilized, while using R32 refrigerant | coolant, a reheat dehumidification driving | operation can be performed appropriately.

１ 圧縮機
３ 室外熱交換器
４ 膨張弁
５ 第１室内熱交換器
６ 除湿用電磁弁
７ 第２室内熱交換器
１０ 空気調和機
DESCRIPTION OF SYMBOLS 1 Compressor 3 Outdoor heat exchanger 4 Expansion valve 5 1st indoor heat exchanger 6 Electromagnetic valve for dehumidification 7 2nd indoor heat exchanger 10 Air conditioner

Claims (3)

圧縮機、室外熱交換器、減圧器、第１室内熱交換器、除湿用電磁弁および第２室内熱交換器が環状に接続された冷媒回路を備え、前記減圧器を開状態にして前記除湿用電磁弁を絞り状態にすることにより除湿運転を行う空気調和機であって、
冷媒としてＲ３２冷媒が使用されるとともに、
前記除湿用電磁弁が絞り状態であって、前記除湿用電磁弁の上流側と下流側の差圧が９８（ｋＰａ）のときのブリード流量が２．０〜８．０（Ｌ/ｍｉｎ）であることを特徴とする空気調和機。 A compressor circuit, an outdoor heat exchanger, a decompressor, a first indoor heat exchanger, a solenoid valve for dehumidification, and a refrigerant circuit in which a second indoor heat exchanger is annularly connected, and the dehumidifier is opened by opening the decompressor An air conditioner that performs a dehumidifying operation by bringing the solenoid valve for use into a throttle state,
While R32 refrigerant is used as the refrigerant,
The bleed flow rate is 2.0 to 8.0 (L / min) when the dehumidifying solenoid valve is in the throttle state and the differential pressure between the upstream side and the downstream side of the dehumidifying solenoid valve is 98 (kPa). An air conditioner characterized by being. 前記除湿用電磁弁が、前記第１室内熱交換器と前記第２室内熱交換器との間に、１つ配置されることを特徴とする請求項１に記載の空気調和機。   2. The air conditioner according to claim 1, wherein one dehumidifying electromagnetic valve is disposed between the first indoor heat exchanger and the second indoor heat exchanger. 前記除湿用電磁弁が絞り状態であって、前記除湿用電磁弁の上流側と下流側の差圧が９８（ｋＰａ）のときのブリード流量が４．０〜６．０（Ｌ/ｍｉｎ）であることを特徴とする請求項１または２に記載の空気調和機。





















The bleed flow rate is 4.0 to 6.0 (L / min) when the dehumidifying solenoid valve is in a throttled state and the differential pressure between the upstream side and the downstream side of the dehumidifying solenoid valve is 98 (kPa). The air conditioner according to claim 1, wherein the air conditioner is provided.





















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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11365335B2 (en) 2017-12-18 2022-06-21 Daikin Industries, Ltd. Composition comprising refrigerant, use thereof, refrigerating machine having same, and method for operating said refrigerating machine
US11435118B2 (en) 2017-12-18 2022-09-06 Daikin Industries, Ltd. Heat source unit and refrigeration cycle apparatus
US11441802B2 (en) 2017-12-18 2022-09-13 Daikin Industries, Ltd. Air conditioning apparatus
US11441819B2 (en) 2017-12-18 2022-09-13 Daikin Industries, Ltd. Refrigeration cycle apparatus
US11493244B2 (en) 2017-12-18 2022-11-08 Daikin Industries, Ltd. Air-conditioning unit
US11492527B2 (en) 2017-12-18 2022-11-08 Daikin Industries, Ltd. Composition containing refrigerant, use of said composition, refrigerator having said composition, and method for operating said refrigerator
US11506425B2 (en) 2017-12-18 2022-11-22 Daikin Industries, Ltd. Refrigeration cycle apparatus
US11535781B2 (en) 2017-12-18 2022-12-27 Daikin Industries, Ltd. Refrigeration cycle apparatus
US11549041B2 (en) 2017-12-18 2023-01-10 Daikin Industries, Ltd. Composition containing refrigerant, use of said composition, refrigerator having said composition, and method for operating said refrigerator
US11549695B2 (en) 2017-12-18 2023-01-10 Daikin Industries, Ltd. Heat exchange unit
US11820933B2 (en) 2017-12-18 2023-11-21 Daikin Industries, Ltd. Refrigeration cycle apparatus
CN117529633A (en) * 2021-06-23 2024-02-06 大金工业株式会社 Air conditioner
US11906207B2 (en) 2017-12-18 2024-02-20 Daikin Industries, Ltd. Refrigeration apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002181408A (en) * 2000-12-11 2002-06-26 Toshiba Kyaria Kk Air conditioner
JP2002221353A (en) * 2001-12-10 2002-08-09 Mitsubishi Electric Corp Air conditioner
JP2007085730A (en) * 2006-12-18 2007-04-05 Mitsubishi Electric Corp Air conditioner and method of operating air conditioner
JP2007321990A (en) * 2007-08-30 2007-12-13 Saginomiya Seisakusho Inc Two-way solenoid controlled valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002181408A (en) * 2000-12-11 2002-06-26 Toshiba Kyaria Kk Air conditioner
JP2002221353A (en) * 2001-12-10 2002-08-09 Mitsubishi Electric Corp Air conditioner
JP2007085730A (en) * 2006-12-18 2007-04-05 Mitsubishi Electric Corp Air conditioner and method of operating air conditioner
JP2007321990A (en) * 2007-08-30 2007-12-13 Saginomiya Seisakusho Inc Two-way solenoid controlled valve

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11506425B2 (en) 2017-12-18 2022-11-22 Daikin Industries, Ltd. Refrigeration cycle apparatus
US11435118B2 (en) 2017-12-18 2022-09-06 Daikin Industries, Ltd. Heat source unit and refrigeration cycle apparatus
US11441802B2 (en) 2017-12-18 2022-09-13 Daikin Industries, Ltd. Air conditioning apparatus
US11441819B2 (en) 2017-12-18 2022-09-13 Daikin Industries, Ltd. Refrigeration cycle apparatus
US11493244B2 (en) 2017-12-18 2022-11-08 Daikin Industries, Ltd. Air-conditioning unit
US11492527B2 (en) 2017-12-18 2022-11-08 Daikin Industries, Ltd. Composition containing refrigerant, use of said composition, refrigerator having said composition, and method for operating said refrigerator
US11365335B2 (en) 2017-12-18 2022-06-21 Daikin Industries, Ltd. Composition comprising refrigerant, use thereof, refrigerating machine having same, and method for operating said refrigerating machine
US11535781B2 (en) 2017-12-18 2022-12-27 Daikin Industries, Ltd. Refrigeration cycle apparatus
US11549041B2 (en) 2017-12-18 2023-01-10 Daikin Industries, Ltd. Composition containing refrigerant, use of said composition, refrigerator having said composition, and method for operating said refrigerator
US11549695B2 (en) 2017-12-18 2023-01-10 Daikin Industries, Ltd. Heat exchange unit
US11820933B2 (en) 2017-12-18 2023-11-21 Daikin Industries, Ltd. Refrigeration cycle apparatus
US11906207B2 (en) 2017-12-18 2024-02-20 Daikin Industries, Ltd. Refrigeration apparatus
CN117529633A (en) * 2021-06-23 2024-02-06 大金工业株式会社 Air conditioner

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