JP2015010733A - Heat pump air conditioner - Google Patents

Heat pump air conditioner Download PDF

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JP2015010733A
JP2015010733A JP2013134594A JP2013134594A JP2015010733A JP 2015010733 A JP2015010733 A JP 2015010733A JP 2013134594 A JP2013134594 A JP 2013134594A JP 2013134594 A JP2013134594 A JP 2013134594A JP 2015010733 A JP2015010733 A JP 2015010733A
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heat
compressor
heat exchanger
drain
heat storage
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一彦 丸本
Kazuhiko Marumoto
一彦 丸本
広田 正宣
Masanori Hirota
正宣 広田
藤高 章
Akira Fujitaka
章 藤高
川邉 義和
Yoshikazu Kawabe
義和 川邉
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Panasonic Corp
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Panasonic Corp
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  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a heat pump air conditioner of high cooling performance by effectively utilizing a heat storage tank used in defrosting, even in a cooling operation.SOLUTION: A heat pump air conditioner is composed of a heat storage tank 10 incorporating a storage heat exchanger 11 exchanging heat between a heat storage material 12 storing heat generated in a compressor 1 and a refrigerant in defrosting, a drain flow channel 15 for guiding the dehumidification water discharged from an indoor heat exchanger 5 in a cooling operation, to the heat storage tank 10, and a drain heat exchanger 16 exchanging heat between the dehumidification water from the drain flow channel and the heat storage material. Cooling performance can be improved by lowering a temperature of the compressor by cooling the heat stored in the heat storage material by utilizing the dehumidification water in the cooling operation.

Description

本発明は、圧縮機で発生した熱を蓄積する蓄熱材と冷媒とを除霜時に熱交換させる蓄熱槽を有するヒートポンプ空気調和機に関する。   The present invention relates to a heat pump air conditioner having a heat storage tank that exchanges heat between a heat storage material that accumulates heat generated by a compressor and a refrigerant during defrosting.

一般にヒートポンプ空気調和機は、暖房運転時に、室外熱交換器に着霜すると、暖房サイクルから冷房サイクルに四方弁を切り替えて除霜を行っている。この除霜方式では、室内ファンが停止するとはいうものの、室内機から冷気が徐々に放出されることから暖房感が失われるという欠点がある。   In general, when a heat pump air conditioner is frosted on an outdoor heat exchanger during heating operation, the four-way valve is switched from a heating cycle to a cooling cycle to perform defrosting. In this defrosting method, although the indoor fan is stopped, there is a drawback that a feeling of heating is lost because cold air is gradually discharged from the indoor unit.

そこで、室外機に設けられた圧縮機に蓄熱装置を設け、暖房運転中に蓄熱槽に蓄えられた圧縮機の廃熱を利用して除霜するようにしたヒートポンプ空気調和機が提案されている(例えば、特許文献1参照)。   Therefore, a heat pump air conditioner has been proposed in which a heat storage device is provided in the compressor provided in the outdoor unit, and defrosting is performed using the waste heat of the compressor stored in the heat storage tank during the heating operation. (For example, refer to Patent Document 1).

特開2012−087945号公報JP 2012-087945 A

しかしながら、上記ヒートポンプ空気調和機は、圧縮機で発生した熱を蓄積しこの蓄積した熱を暖房運転時に除霜に使用することによって除霜時においても暖房運転を継続可能なノンストップ除霜をおこなうことはできるが、冷房運転時おいては前記蓄熱槽が有効利用されていなかった。   However, the heat pump air conditioner performs non-stop defrosting capable of continuing heating operation even during defrosting by accumulating heat generated in the compressor and using the accumulated heat for defrosting during heating operation. However, the heat storage tank was not effectively used during the cooling operation.

本発明はこのような点に鑑みてなしたもので、冷房運転時おいても蓄熱槽を有効に利用して冷房性能の高いヒートポンプ空気調和機を提供することを目的としたものである。   The present invention has been made in view of these points, and an object of the present invention is to provide a heat pump air conditioner having high cooling performance by effectively using a heat storage tank even during cooling operation.

本発明は上記目的を達成するため、圧縮機、四方弁、室内熱交換器、絞り装置、室外熱交換器、前記四方弁、アキュムレータ及び前記圧縮機の順に接続された冷媒回路を有するヒートポンプ空気調和機において、前記圧縮機で発生した熱を蓄積する蓄熱材と冷媒とを除霜時に熱交換させる蓄熱熱交換器を内蔵した蓄熱槽と、冷房運転時に前記室内熱交換器から排出される除湿水を前記蓄熱槽に導くドレーン流路と、前記ドレーン流路からの除湿水と前記蓄熱材との熱交換を行なうドレーン熱交換器とを設けた構成としてある。   To achieve the above object, the present invention provides a heat pump air conditioner having a refrigerant circuit connected in the order of a compressor, a four-way valve, an indoor heat exchanger, an expansion device, an outdoor heat exchanger, the four-way valve, an accumulator, and the compressor. A heat storage tank having a built-in heat storage heat exchanger that exchanges heat between the heat storage material that accumulates heat generated by the compressor and the refrigerant during defrosting, and dehumidified water discharged from the indoor heat exchanger during cooling operation Is provided with a drain channel for guiding the heat to the heat storage tank, and a drain heat exchanger for exchanging heat between the dehumidified water from the drain channel and the heat storage material.

これにより、冷房運転時に除湿水を利用して蓄熱材に蓄積した熱を冷却することができ、冷房性能の向上を図ることができる。   Thereby, the heat accumulated in the heat storage material can be cooled using the dehumidified water during the cooling operation, and the cooling performance can be improved.

本発明によれば、冷房運転時の除湿水により蓄熱材に蓄積した熱を冷却して圧縮機を冷却することができるので、冷房性能を向上させることができる。   According to the present invention, since the heat accumulated in the heat storage material can be cooled by the dehumidified water during the cooling operation, the compressor can be cooled, so that the cooling performance can be improved.

本発明の実施の形態1におけるヒートポンプ空気調和機の構成図The block diagram of the heat pump air conditioner in Embodiment 1 of this invention

本発明の第1の実施の形態によるヒートポンプ空気調和機は、圧縮機、四方弁、室内熱交換器、絞り装置、室外熱交換器、前記四方弁、アキュムレータ及び前記圧縮機の順に接続された冷媒回路を有するヒートポンプ空気調和機において、前記圧縮機で発生した熱を蓄積する蓄熱材と冷媒とを除霜時に熱交換させる蓄熱熱交換器を内蔵した蓄熱槽と、冷房運転時に前記室内熱交換器から排出される除湿水を前記蓄熱槽に導くドレーン流路と、前記ドレーン流路からの除湿水と蓄熱材との熱交換を行なうドレーン熱交換器とを設けた構成としてあり、これにより、冷房運転時に除湿水を利用して蓄熱材に蓄積した熱を放散させて圧縮機を冷却することができ、冷房性能の向上することができる。   The heat pump air conditioner according to the first embodiment of the present invention includes a compressor, a four-way valve, an indoor heat exchanger, an expansion device, an outdoor heat exchanger, the four-way valve, an accumulator, and a refrigerant connected in this order. In a heat pump air conditioner having a circuit, a heat storage tank having a built-in heat storage heat exchanger for exchanging heat between a heat storage material that accumulates heat generated by the compressor and a refrigerant during defrosting, and the indoor heat exchanger during cooling operation And a drain heat exchanger for exchanging heat between the dehumidified water from the drain flow path and the heat storage material. The heat accumulated in the heat storage material can be dissipated using the dehumidified water during operation to cool the compressor, and the cooling performance can be improved.

本発明の第2の実施の形態は、前記第1の実施の形態によるヒートポンプ空気調和機において、除湿水と圧縮機とが直接熱交換できるドレーン圧縮機熱交換器をさらに設置した構成としてあり、これにより、蓄熱材に充分な廃熱を蓄えていない状態でも、直接、圧縮機を除湿水により冷却することができ、冷房性能の向上することができる。   In the heat pump air conditioner according to the first embodiment, the second embodiment of the present invention has a drain compressor heat exchanger that can directly exchange heat between the dehumidified water and the compressor, Thereby, even in a state where sufficient waste heat is not stored in the heat storage material, the compressor can be directly cooled by the dehumidified water, and the cooling performance can be improved.

以下、本発明実施の形態について説明する。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. Note that the present invention is not limited to the embodiments.

(実施の形態1)
図1は本発明の実施の形態1におけるヒートポンプ空気調和機の構成図である。
(Embodiment 1)
FIG. 1 is a configuration diagram of a heat pump air conditioner according to Embodiment 1 of the present invention.

本実施の形態1におけるヒートポンプ空気調和機は、冷媒を圧縮する圧縮機1、冷房運転と暖房運転で冷媒回路を切り替える四方弁2、冷房時には凝縮器となり暖房時には蒸発器となり冷媒と外気の熱を交換する室外熱交換器3、室外熱交換器3内を流れる冷媒と外気の熱交換を促進する室外ファン8、冷媒を減圧する絞り装置4、冷媒と室内空気の熱を交換し冷房時には蒸発器となり暖房時には凝縮器となる室内熱交換器5、室内熱交換器5内を流れる冷媒と室内空気の熱交換を促進する室内ファン9、圧縮機1の吸い込み側に接続したアキュムレータ6とで冷媒回路が形成されている。   The heat pump air conditioner in the first embodiment includes a compressor 1 that compresses refrigerant, a four-way valve 2 that switches a refrigerant circuit between cooling operation and heating operation, a condenser during cooling, an evaporator during heating, and heat of the refrigerant and outside air. The outdoor heat exchanger 3 to be exchanged, the outdoor fan 8 for promoting heat exchange between the refrigerant flowing in the outdoor heat exchanger 3 and the outside air, the expansion device 4 for depressurizing the refrigerant, and the evaporator for exchanging the heat of the refrigerant and the indoor air. The refrigerant circuit is composed of an indoor heat exchanger 5 that becomes a condenser during heating, an indoor fan 9 that promotes heat exchange between the refrigerant flowing in the indoor heat exchanger 5 and room air, and an accumulator 6 that is connected to the suction side of the compressor 1. Is formed.

また、圧縮機1の回りには圧縮機1からの熱を蓄熱するための蓄熱材12と、蓄熱材12に蓄えられた熱を取り出すため冷媒と熱交換する蓄熱熱交換器11を内蔵した蓄熱槽10が設置されている。   Further, around the compressor 1, a heat storage material 12 for storing heat from the compressor 1 and a heat storage heat exchanger 11 for exchanging heat with a refrigerant to take out the heat stored in the heat storage material 12 are incorporated. A tank 10 is installed.

そして、前記室外熱交換器3と四方弁2との間に設置された流路切替手段7により、一方はアキュムレータ6に接続する通常回路25と、他方は蓄熱熱交換器11を通ってアキュムレータ6に接続する蓄熱回路26が備えられている。   And, by the flow path switching means 7 installed between the outdoor heat exchanger 3 and the four-way valve 2, one is a normal circuit 25 connected to the accumulator 6, and the other is through the heat storage heat exchanger 11 and the accumulator 6. The heat storage circuit 26 connected to is provided.

また、冷房運転時に室内熱交換器5に付着し排出される除湿水をうけるためのドレーン受け13には、ドレーン受け13内のドレーン水14を蓄熱槽10に導くドレーン流路15が設けてあり、このドレーン流路15の下流には前記蓄熱材12と熱交換するドレーン熱交換器16及び圧縮機1と直接熱交換するドレーン圧縮機熱交換器17を備えている。   The drain receiver 13 for receiving dehumidified water that adheres to and is discharged from the indoor heat exchanger 5 during the cooling operation is provided with a drain flow path 15 that guides the drain water 14 in the drain receiver 13 to the heat storage tank 10. A drain heat exchanger 16 for exchanging heat with the heat storage material 12 and a drain compressor heat exchanger 17 for exchanging heat directly with the compressor 1 are provided downstream of the drain passage 15.

なお、室外機22は圧縮機1、四方弁2、室外熱交換器3、絞り装置4、アキュムレータ6、流路切替手段7、蓄熱槽10、室外ファン8、ドレーン熱交換器16、ドレーン圧縮機熱交換器17で構成され、室内機21は室内熱交換器5、室内ファン9、ドレーン受け13で構成され、室外機22と室内機21は液側接続管23とガス側接続管24、ドレーン流路15で接続されている。   The outdoor unit 22 includes a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an expansion device 4, an accumulator 6, a flow path switching unit 7, a heat storage tank 10, an outdoor fan 8, a drain heat exchanger 16, and a drain compressor. The indoor unit 21 includes an indoor heat exchanger 5, an indoor fan 9, and a drain receiver 13. The outdoor unit 22 and the indoor unit 21 include a liquid side connecting pipe 23, a gas side connecting pipe 24, and a drain. They are connected by a flow path 15.

この様に構成されたヒートポンプ空気調和機について動作を説明する。動作の説明では本発明の特徴である冷房運転時の動作を主体に説明を行なう。   The operation of the heat pump air conditioner configured as described above will be described. In the description of the operation, the operation during the cooling operation, which is a feature of the present invention, will be mainly described.

冷房運転時には、圧縮機1によって圧縮された冷媒は高温高圧の冷媒となって四方弁2を通り流路切替手段7を介して室外熱交換器3に送られる。そして、室外ファン8によって外気と熱交換を促進して放熱し、高圧の液冷媒となり絞り装置4に送られる。絞り装置4では減圧されて低温低圧の二相冷媒となり、液接続管23を通って、室内熱交換器5に送られる。   During the cooling operation, the refrigerant compressed by the compressor 1 becomes a high-temperature and high-pressure refrigerant, passes through the four-way valve 2, and is sent to the outdoor heat exchanger 3 through the flow path switching means 7. Then, the outdoor fan 8 promotes heat exchange with the outside air to dissipate heat and becomes a high-pressure liquid refrigerant that is sent to the expansion device 4. In the expansion device 4, the pressure is reduced to form a low-temperature and low-pressure two-phase refrigerant, which is sent to the indoor heat exchanger 5 through the liquid connection pipe 23.

室内ファン9によって吸い込まれた室内空気は室内熱交換器5を通って冷媒と熱交換し、冷媒は室内空気の熱を吸熱し蒸発気化して低温のガス冷媒となる。このとき冷媒によって吸熱された室内空気は温度湿度が低下して室内ファン9によって室内に吹き出され室内を冷房する。また、ガス冷媒は、ガス側接続管24を通過して四方弁2に入り、アキュムレータ6を経て圧縮機1に戻る。   The indoor air sucked by the indoor fan 9 passes through the indoor heat exchanger 5 to exchange heat with the refrigerant, and the refrigerant absorbs the heat of the indoor air and evaporates to become a low-temperature gas refrigerant. At this time, the indoor air absorbed by the refrigerant has a reduced temperature and humidity and is blown into the room by the indoor fan 9 to cool the room. Further, the gas refrigerant passes through the gas side connection pipe 24 and enters the four-way valve 2 and returns to the compressor 1 through the accumulator 6.

この時、冷媒によって吸熱された室内空気は温度湿度が低下し、即ち空気中の水分が凝縮して除湿水であるドレーンとして室内熱交換器5の表面に付着する。付着したドレーンは重力により落下してドレーン受け13に溜まる。   At this time, the temperature and humidity of the indoor air absorbed by the refrigerant decreases, that is, moisture in the air condenses and adheres to the surface of the indoor heat exchanger 5 as a drain as dehumidified water. The attached drain falls by gravity and accumulates in the drain receiver 13.

さらに、ドレーン受け13に溜まったドレーン水14はドレーン流路15を通って室外機22に送られる。室外機22に送られたドレーン水14はドレーン流路15の下流に取り付けられたドレーン熱交換器16及びドレーン圧縮機熱交換器17を流れて室外に排出される。   Further, the drain water 14 accumulated in the drain receiver 13 is sent to the outdoor unit 22 through the drain channel 15. The drain water 14 sent to the outdoor unit 22 flows through the drain heat exchanger 16 and the drain compressor heat exchanger 17 attached downstream of the drain flow path 15 and is discharged to the outside.

ここで、上記ドレーン熱交換器16を通ったドレーン水14は蓄熱材12の熱を吸熱して蓄熱材12の温度を下げることになり、さらに蓄熱材12を内蔵する蓄熱槽10と圧縮機1は接触しているため、結果的に圧縮機1の温度を下げることになる。また、ドレーン圧縮機熱交換器17を通ったドレーン水14は圧縮機1の熱を直接吸熱して圧縮機1の温度を下げる。   Here, the drain water 14 that has passed through the drain heat exchanger 16 absorbs the heat of the heat storage material 12 to lower the temperature of the heat storage material 12, and further the heat storage tank 10 and the compressor 1 that contain the heat storage material 12. As a result, the temperature of the compressor 1 is lowered. Further, the drain water 14 that has passed through the drain compressor heat exchanger 17 directly absorbs the heat of the compressor 1 and lowers the temperature of the compressor 1.

ヒートポンプ空気調和機が起動後間もなくで、蓄熱材12の蓄熱量が少なく温度が高くない場合でも、圧縮機1の温度上昇は速いことから、ドレーン圧縮機熱交換器17を通ったドレーン水は熱交換して圧縮機1の温度を下げることができる。   Even if the heat pump air conditioner is shortly after startup, even if the heat storage amount of the heat storage material 12 is small and the temperature is not high, the temperature of the compressor 1 rises quickly, so that the drain water passing through the drain compressor heat exchanger 17 is heated. The temperature of the compressor 1 can be lowered by replacement.

この様に、ドレーン水14が何れのルートを通っても圧縮機1の温度を下げることになるため、圧縮機1の吐出温度が低下するとともに、吐出圧力を下げることができるため、圧縮機1の入力が低下してヒートポンプ空気調和機の冷房運転時の効率を向上することができる。   Thus, since the temperature of the compressor 1 is lowered regardless of which route the drain water 14 passes, the discharge temperature of the compressor 1 can be lowered and the discharge pressure can be lowered. Therefore, the efficiency during the cooling operation of the heat pump air conditioner can be improved.

また、暖房運転の起動時に圧縮機1によって圧縮された冷媒は高温高圧の冷媒となって四方弁2を通り、ガス接続管24に送られる。室内ファン9によって吸い込まれた室内空気は室内熱交換器5を通って冷媒と熱交換し、冷媒は室内空気へ熱を放熱し凝縮して高圧の液冷媒となる。このとき室内空気は冷媒の熱を吸熱し温度が上昇した状態で室内ファン7によって室内に吹き出され室内を暖房する。その後、冷媒は液接続管23を通って絞り装置4に送られ、絞り装置4において減圧されて低温低圧の二相冷媒となり、室外熱交換器3に送られて、室外ファン8によって外気と熱交換を促進して蒸発気化し、通常回路25に接続した状態の流路切替手段7、四方弁2を経由してアキュムレータ6を通って圧縮機1へ戻される。   Further, the refrigerant compressed by the compressor 1 at the start of the heating operation becomes a high-temperature and high-pressure refrigerant, passes through the four-way valve 2, and is sent to the gas connection pipe 24. The indoor air sucked by the indoor fan 9 passes through the indoor heat exchanger 5 and exchanges heat with the refrigerant, and the refrigerant dissipates heat to the indoor air and condenses to become a high-pressure liquid refrigerant. At this time, the indoor air absorbs the heat of the refrigerant and is blown into the room by the indoor fan 7 in a state where the temperature is raised, thereby heating the room. Thereafter, the refrigerant is sent to the expansion device 4 through the liquid connection pipe 23, is decompressed in the expansion device 4 to become a low-temperature and low-pressure two-phase refrigerant, is sent to the outdoor heat exchanger 3, and is heated to the outside air and heat by the outdoor fan 8. The exchange is promoted to evaporate and is returned to the compressor 1 through the accumulator 6 via the flow path switching means 7 and the four-way valve 2 connected to the normal circuit 25.

このようにこのヒートポンプ空気調和機は、冷房運転時に室内熱交換器5から排出される除湿水を前記蓄熱槽10に導くドレーン流路15と、除湿水と蓄熱材12の熱交換を行なうドレーン熱交換器16とを備えたことにより、蓄熱材12に蓄積した熱を除湿水により冷却して圧縮機1の温度を下げることで冷房性能を向上させることができる。   As described above, this heat pump air conditioner has a drain flow path 15 that guides the dehumidified water discharged from the indoor heat exchanger 5 during the cooling operation to the heat storage tank 10, and drain heat that performs heat exchange between the dehumidified water and the heat storage material 12. By providing the exchanger 16, the cooling performance can be improved by cooling the heat accumulated in the heat storage material 12 with dehumidified water and lowering the temperature of the compressor 1.

また、この実施の形態では、除湿水と前記圧縮機1とが直接熱交換できるドレーン圧縮機熱交換器17をさらに設置したことにより、蓄熱材12に充分な廃熱を蓄えていなくても、圧縮機1を直接除湿水により冷却することができるので、冷房性能を向上させることができる。   In this embodiment, the drain compressor heat exchanger 17 capable of directly exchanging heat between the dehumidified water and the compressor 1 is further installed, so that sufficient waste heat is not stored in the heat storage material 12, Since the compressor 1 can be directly cooled with dehumidified water, the cooling performance can be improved.

尚、本発明の実施の形態では、ドレーン熱交換器16とドレーン圧縮機熱交換器17を併設して同時に使用するもので説明したが、いずれか一方のみを設けてもよく、またいずれか一方のみ単独で使用するようにしてもよいものである。   In the embodiment of the present invention, the drain heat exchanger 16 and the drain compressor heat exchanger 17 are described as being used at the same time. However, only one of them may be provided, or either one may be provided. Only it may be used alone.

本発明は蓄熱槽を有効に利用して冷房性能の高いヒートポンプ空気調和機を提供でき、一般用はもちろん業務用のヒートポンプ空気調和機に広く適用できる。   INDUSTRIAL APPLICABILITY The present invention can provide a heat pump air conditioner having high cooling performance by effectively using a heat storage tank, and can be widely applied to a heat pump air conditioner for business use as well as general use.

1 圧縮機
2 四方弁
3 室外熱交換器
4 絞り装置
5 室内熱交換器
6 アキュムレータ
10 蓄熱槽
11 蓄熱熱交換器
12 蓄熱材
15 ドレーン流路
16 ドレーン熱交換器
17 ドレーン圧縮機熱交換器
DESCRIPTION OF SYMBOLS 1 Compressor 2 Four-way valve 3 Outdoor heat exchanger 4 Throttle device 5 Indoor heat exchanger 6 Accumulator 10 Thermal storage tank 11 Thermal storage heat exchanger 12 Thermal storage material 15 Drain flow path 16 Drain heat exchanger 17 Drain compressor heat exchanger

Claims (2)

圧縮機、四方弁、室内熱交換器、絞り装置、室外熱交換器、前記四方弁、アキュムレータ及び前記圧縮機の順に接続された冷媒回路を有するヒートポンプ空気調和機において、前記圧縮機で発生した熱を蓄積する蓄熱材と冷媒とを除霜時に熱交換させる蓄熱熱交換器を内蔵した蓄熱槽と、冷房運転時に前記室内熱交換器から排出される除湿水を前記蓄熱槽に導くドレーン流路と、前記ドレーン流路からの除湿水と前記蓄熱材との熱交換を行なうドレーン熱交換器とを設けたことを特徴とするヒートポンプ空気調和機。 In a heat pump air conditioner having a refrigerant circuit connected in the order of a compressor, a four-way valve, an indoor heat exchanger, an expansion device, an outdoor heat exchanger, the four-way valve, an accumulator, and the compressor, heat generated in the compressor A heat storage tank having a built-in heat storage heat exchanger for exchanging heat between the heat storage material and the refrigerant during defrosting, and a drain channel for leading dehumidified water discharged from the indoor heat exchanger to the heat storage tank during cooling operation A heat pump air conditioner provided with a drain heat exchanger for exchanging heat between the dehumidified water from the drain flow path and the heat storage material. 除湿水と圧縮機とが直接熱交換できるドレーン圧縮機熱交換器をさらに設置したことを特徴とする請求項1記載のヒートポンプ空気調和機。 The heat pump air conditioner according to claim 1, further comprising a drain compressor heat exchanger capable of directly exchanging heat between the dehumidified water and the compressor.
JP2013134594A 2013-06-27 2013-06-27 Heat pump air conditioner Pending JP2015010733A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9407899B2 (en) 2010-11-15 2016-08-02 Lg Electronics Inc. Method for transforming frame format and apparatus using same method
CN107218644A (en) * 2017-05-19 2017-09-29 东南大学 A kind of series connection Frostless air-source heat pump system based on regeneration recuperation of heat
CN108332307A (en) * 2018-02-06 2018-07-27 贵州电网有限责任公司 A kind of scalable outdoor heat exchange device of solution-type antifrost
CN112484177A (en) * 2019-09-11 2021-03-12 广东美的白色家电技术创新中心有限公司 Air conditioner

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9407899B2 (en) 2010-11-15 2016-08-02 Lg Electronics Inc. Method for transforming frame format and apparatus using same method
CN107218644A (en) * 2017-05-19 2017-09-29 东南大学 A kind of series connection Frostless air-source heat pump system based on regeneration recuperation of heat
CN107218644B (en) * 2017-05-19 2019-07-30 东南大学 A kind of series connection Frostless air-source heat pump system based on regeneration recuperation of heat
CN108332307A (en) * 2018-02-06 2018-07-27 贵州电网有限责任公司 A kind of scalable outdoor heat exchange device of solution-type antifrost
CN108332307B (en) * 2018-02-06 2023-09-19 贵州电网有限责任公司 Solution type frosting-proof telescopic outdoor heat exchange device
CN112484177A (en) * 2019-09-11 2021-03-12 广东美的白色家电技术创新中心有限公司 Air conditioner
CN112484177B (en) * 2019-09-11 2022-11-29 广东美的白色家电技术创新中心有限公司 Air conditioner

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