JP2001030743A - Heat pump air conditioner for electric vehicle - Google Patents

Heat pump air conditioner for electric vehicle

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Publication number
JP2001030743A
JP2001030743A JP21038099A JP21038099A JP2001030743A JP 2001030743 A JP2001030743 A JP 2001030743A JP 21038099 A JP21038099 A JP 21038099A JP 21038099 A JP21038099 A JP 21038099A JP 2001030743 A JP2001030743 A JP 2001030743A
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Prior art keywords
heat exchanger
heat
cabin
air conditioner
compressor
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JP21038099A
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Japanese (ja)
Inventor
Yasuo Katayama
康雄 片山
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Mitsubishi Heavy Ind Ltd
三菱重工業株式会社
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Abstract

PROBLEM TO BE SOLVED: To configure an air conditioner such that visibility can be assured by defogging window glasses while a heater is on. SOLUTION: This air conditioner is provided with a compressor 1 driven by an electric motor, a four-way valve 2, a heat exchanger for exterior of cabin 3, a heat exchanger for interior of cabin for absorbing heat 4, and an expansion valve 5 disposed between the two heat exchangers 3, 4. A heat exchanger for interior of cabin for discharging heat 6, into which high- temperature high-pressure refrigerant gas pressurized by the compressor 1 during heating is guided, is disposed downstream of indoor circulating air flow of the heat exchanger for interior of cabin for absorbing heat 4. An expansion valve 7 is disposed in a refrigerant piping between the heat exchanger for interior of cabin for discharging heat 6 and the four-way valve 2. Structure to throttle control at least either one of the two expansion valves 5, 7 provides the heat pump air conditioner for an electric vehicle with functions of heating, cooling, and dehumidifying.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、電気自動車用ヒートポンプ式空気調和装置に関し、特に、所望どおりの除湿、暖房を行いうるように構成したヒートポンプ式空気調和装置に関する。 The present invention relates to relates to a heat pump type air conditioner for an electric vehicle, in particular, as desired dehumidification relates to a structure the heat pump type air conditioner to be carried out heating.

【0002】 [0002]

【従来の技術】図3に従来の電気自動車用空気調和装置の冷媒系統図を示している。 BACKGROUND OF THE INVENTION Figure 3 shows a refrigerant system diagram of a conventional electric car air conditioner. 図3において、1は電動モータ(図示していない)で駆動されるコンプレッサ、2 Compressor 3, 1 driven by an electric motor (not shown), 2
は四方弁、3は車室外熱交換器、4は車室内吸熱用熱交換器、5は膨張弁を示しており、これらが冷媒配管によって図のように連通されている。 Four-way valve, 3 the outer heat exchanger, 4 cabin heat absorbing heat exchanger, 5 denotes an expansion valve, it is communicated as shown in Figure by the refrigerant pipe. 10は車室外熱交換器3用のファン、11は車室内吸熱用熱交換器4に設けられた車室内空気循環用ファン、20はドレンパン、21 10 fan for the outer heat exchanger 3, the vehicle interior air circulation fan which is mounted in the vehicle heat absorbing heat exchanger 4 is 11, 20 drain pan 21
はドレン排出パイプを示している。 It shows the drain discharge pipe.

【0003】以上の構成をもつ、図3の空気調和装置において、バッテリで駆動される電動モータでコンプレッサ1が駆動されると、空気調和装置が冷房運転の場合はコンプレッサ1にて圧縮された高温・高圧のガス冷媒は、冷媒配管を介して四方弁2の実線矢印で示す方向に流れ、車室外熱交換器3に圧送され車室外熱交換器用ファン10により導入された外気によって冷却され凝縮液化する。 [0003] having the above configuration, in the air conditioner of FIG. 3, the compressor 1 is driven by an electric motor driven by a battery, the high temperature when the air conditioner is cooling operation compressed by the compressor 1 - high-pressure gas refrigerant flows in the direction indicated by the solid arrow of the four-way valve 2 via the refrigerant pipe is cooled by the introduced outside air by pumping by car outdoor heat exchanger fan 10 to the outer heat exchanger 3 condensed to.

【0004】凝縮液化した液冷媒は車室外熱交換器3を出ると、冷媒配管を経て同じく車室外に配置された膨張弁5に送られ、ここで断熱膨張した低温・低圧の液冷媒となる。 [0004] condensed and liquefied liquid refrigerant exits the outer heat exchanger 3, is sent to the expansion valve 5, which is also located outside the passenger compartment through the refrigerant pipe becomes where adiabatic expansion to low temperature and low pressure liquid refrigerant . その低温・低圧の液冷媒は、車室内に設けられた車室内吸熱用熱交換器4と車室外とを結ぶ冷媒配管を介して車室内吸熱用熱交換器4に入り、車室内空気循環用ファン11によって車室内吸熱用熱交換器4に送り込まれた車室内の循環空気と熱交換し、その循環空気を冷却することにより車室内を冷房する。 Liquid refrigerant that low-temperature, low-pressure enters the passenger compartment heat absorbing heat exchanger 4 via the refrigerant pipe connecting the vehicle interior heat absorbing heat exchanger 4 provided in the vehicle interior and the vehicle exterior, a passenger compartment air circulation circulating air heat exchange in the cabin fed into the passenger compartment heat absorbing heat exchanger 4 by the fan 11 to cool the vehicle interior by cooling the circulating air. なお、熱交換の際に車室内吸熱用熱交換器4の表面に発生する循環空気の結露水は、結露水の受け皿であるドレンパン20に滴下、ドレン排出パイプ21を経て車室外に排出される。 Incidentally, condensation of the circulating air generated in the passenger compartment surface of the heat absorbing heat exchanger 4 during the heat exchange, dropped to the drain pan 20 is a saucer of condensation water, is discharged outside the vehicle compartment via the drain discharge pipe 21 .

【0005】一方、循環空気と熱交換した冷媒は、蒸発気化して車室内吸熱用熱交換器4と車室外に設けられた四方弁2とを接続する冷媒配管を経て四方弁2を実線矢印の方向に流れて、同じく車室外に配置されたコンプレッサ1に戻る。 On the other hand, the refrigerant exchange circulating air and heat, the solid arrow the four-way valve 2 through the refrigerant pipe connecting the four-way valve 2 provided on the vehicle exterior and the vehicle interior heat absorbing heat exchanger 4 evaporates It flows in the direction returning to the compressor 1 which is likewise arranged outside the vehicle compartment.

【0006】一方、空気調和装置が暖房運転の場合は、 [0006] On the other hand, when the air conditioner is heating operation,
コンプレッサ1で圧縮された高温・高圧のガス冷媒は、 Gas refrigerant compressed high temperature and high pressure by the compressor 1,
冷媒配管を介して冷房運転時とは冷媒流路を電気的に切り換えられた四方弁2を破線矢印で示す方向に流れ、車室内吸熱用熱交換器4に圧送され、内気循環用ファン1 The cooling operation through the refrigerant pipe flows in the direction indicated the four-way valve 2 is switched refrigerant passage electrically by broken line arrows, is pumped into the vehicle interior heat absorbing heat exchanger 4, the internal air circulation fan 1
1によって車室内吸熱用熱交換器4に送り込まれた車室内の循環空気と熱交換し、その循環空気を加熱し車室内を暖房する。 1 by circulating air and heat exchange in the cabin fed into the passenger compartment heat absorbing heat exchanger 4 to heat the heated passenger compartment the circulating air.

【0007】循環空気と熱交換した冷媒は凝縮液化して、冷媒配管を介して車室外に配置された膨張弁5に送られて断熱膨張し低温・低圧の液冷媒となり、液冷媒は同じく冷媒配管を介して車室外熱交換器3に送り込まれ、ここで車室外熱交換器用ファン10によって導入された外気と熱交換することにより蒸発し、低温・低圧のガス冷媒となる。 [0007] circulating air and heat exchange refrigerant is condensed and liquefied, is sent to the expansion valve 5 disposed outside the vehicle compartment via the refrigerant piping becomes adiabatic expansion to low temperature and low pressure liquid refrigerant, the liquid refrigerant is also the refrigerant It sent to the outer heat exchanger 3 through the pipe, wherein evaporated by outside air exchanges heat introduced by the outer heat exchanger fan 10, a low-temperature low-pressure gas refrigerant. その低温・低圧のガス冷媒は、冷媒配管を介して四方弁2を破線矢印の方向に流れてコンプレッサ1に戻る。 Its low-temperature low-pressure gas refrigerant returns to the compressor 1 flows through the four-way valve 2 via the refrigerant pipe in the direction of the dashed arrows.

【0008】 [0008]

【発明が解決しようとする課題】前記した従来の電気自動車用ヒートポンプ式空気調和装置においては、暖房運転の場合の車室内吸熱用熱交換器4は、内気循環用ファン11によって送り込まれた循環空気を加熱し車室内を暖房するのみであるが、電気自動車用ヒートポンプ式空気調和装置あっては、暖房運転時に空気調和装置に要求される窓ガラスの曇りを取り視認性を確保するための除湿・暖房を行う必要がある。 In THE INVENTION Problems to be Solved] Conventional heat pump type air conditioner for an electric vehicle described above, the passenger compartment heat absorbing heat exchanger 4 in the case of heating operation, was sent by the internal air circulation fan 11 circulates air Although only heating the heating vehicle interior, and is a heat pump type air conditioner for an electric vehicle, dehumidification, in order to ensure visibility take fogging of the window glass which is required to the air conditioner during a heating operation it is necessary to carry out the heating. この場合、車室内に別途加熱用熱交換器を備え、従来の車室内吸熱用熱交換器4を冷却用熱交換器として使用する空気調和装置とすることが考えられるが、逆止弁、電磁弁等の部品の追加が多くシステムが複雑になり、コストアップとなる不具合がある。 In this case, it provided with a separate heat exchanger for heating the passenger compartment, although the conventional vehicle interior heat absorbing heat exchanger 4 and the air conditioner to be used as a cooling heat exchanger is considered, the check valve, the electromagnetic additional components such as the valve is large and the system becomes complicated, there is a problem that increases the cost.

【0009】本発明は、電気自動車用ヒートポンプ式空気調和装置において、暖房運転時に除湿・暖房運転を行いうるように構成した構造簡単な電気自動車用ヒートポンプ式空気調和装置を提供することを課題としている。 The present invention, in an electric heat pump type air conditioner for a motor vehicle, has an object to provide an arrangement structure heat pump type air conditioner for a simple electric vehicles to be carried out dehumidification and heating operation during the heating operation .

【0010】 [0010]

【課題を解決するための手段】本発明は、前記課題を解決するため、電動モータ駆動のコンプレッサ、四方弁、 SUMMARY OF THE INVENTION The present invention is, for solving the problems, the electric motor driving the compressor, four-way valve,
車室外熱交換器、車室内吸熱用熱交換器、及び、同車室外熱交換器と車室内吸熱用熱交換器の間に設けられた膨張弁を有する電気自動車用ヒートポンプ式空気調和装置において、前記車室内吸熱用熱交換器の車室内循環空気流の後流側に配置され暖房時に前記コンプレッサで加圧された高温・高圧のガス冷媒が導かれる車室内放熱用熱交換器と、同車室内放熱用熱交換器と前記四方弁との間の冷媒配管に配置された膨張弁とを備え、前記2つの膨張弁の少なくともいずれか一方を絞り制御するように構成した電気自動車用ヒートポンプ式空気調和装置を提供する。 The outer heat exchanger, the cabin heat absorbing heat exchanger, and the heat pump type air conditioner for an electric vehicle having an expansion valve provided between taking the same car outdoor heat exchanger and the cabin heat absorbing heat exchanger, a vehicle interior radiating heat exchanger gas refrigerant of the passenger compartment heat absorbing heat exchanger is disposed on the downstream side of the passenger compartment circulating air flow the compressor in pressurized high temperature and high pressure during the heating is directed, taking the same car refrigerant pipe to an arranged expansion valve, the two electric vehicle heat pump type air configured to control the diaphragm at least one of the expansion valve between the indoor heat radiating heat exchanger and the four-way valve to provide a conditioning apparatus.

【0011】このように構成された本発明の電気自動車用ヒートポンプ式空気調和装置によると、暖房運転時に車室内放熱用熱交換器において高温・高圧のガス冷媒で加熱される車室内循環空気は、車室内吸熱用熱交換器で除湿されているので、暖房運転時に窓ガラスの曇りを取ることが可能となる。 [0011] According to such an electric automobile heat pump type air conditioner of the present invention constructed, cabin circulating air is heated by high-temperature high-pressure gas refrigerant in the vehicle interior radiating heat exchanger during the heating operation, since the dehumidified by the cabin heat absorbing heat exchanger, it is possible to take the fogging of the window glass during the heating operation.

【0012】また、本発明は、前記した電気自動車用ヒートポンプ式空気調和装置において、四方弁と車室内放熱用熱交換器との間の前記膨張弁の出口とコンプレッサの吸入側を介して繋がれ、冷房運転時に開となる電磁弁を設けた構成とした空気調和装置を提供する。 Further, the present invention is the heat pump type air conditioner for an electric vehicle described above, connected through the intake side of the outlet and the compressor of the expansion valve between the four-way valve and the passenger compartment heat radiating heat exchanger , to provide an air conditioner that has a configuration in which a solenoid valve is opened during the cooling operation. このように構成したものでは、冷房運転時に、車室内放熱用熱交換器と膨張弁や、これらを結ぶ冷媒配管に残っている冷媒はコンプレッサの吸入側に流れ冷房用冷媒として有効に使用されるものとなる。 Thus is obtained by construction, during cooling operation, and the passenger compartment heat radiating heat exchanger and the expansion valve, the refrigerant remaining in the refrigerant pipe connecting these are effectively used as refrigerant flow cooling to the suction side of the compressor the things.

【0013】 [0013]

【発明の実施の形態】以下、本発明による電気自動車用ヒートポンプ式空気調和装置について図1,図2に示した実施の形態に基づいて具体的に説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, FIG. 1 for a heat pump type air conditioner for an electric vehicle according to the present invention will be specifically described based on the embodiment shown in FIG. なお、以下の実施の形態において図3に示した従来の装置と同じ構成の部分には説明を簡単にするため同じ符号を付してあり、それらについての重複する説明は省略する。 The portions having the same configuration as the conventional apparatus shown in FIG. 3 in the following embodiments are denoted by the same reference numerals for simplicity of explanation, the redundant description of them will be omitted.

【0014】(第1実施形態)まず、図1に示した第1 [0014] (First Embodiment) First, the first shown in FIG. 1
実施形態について説明する。 Embodiments will be described. 図1において、6は車室内放熱用熱交換器を示し、車室内において、車室内空気循環用ファン11による循環空気に対し車室内吸熱用熱交換器4の後流側に配置されている。 1, 6 indicates the vehicle interior radiating heat exchanger, the cabin is disposed on the downstream side of the passenger compartment heat absorbing heat exchanger 4 to the circulating air by the room air circulation fan 11. 7は膨張弁を示している。 7 shows the expansion valve. 車室内放熱用熱交換器6と膨張弁7は、図のように四方弁2を介して冷媒配管に連絡されている。 Cabin radiating heat exchanger 6 and the expansion valve 7 is contacted to the refrigerant pipe through the four-way valve 2 as shown in FIG. その他の構成は、図3に示した空気調和装置と実質同じであり、その説明は省略する。 Other configurations are the air conditioner substantially the same as shown in FIG. 3, a description thereof will be omitted.

【0015】図1に示された空気調和装置において、冷房運転の場合は従来と同様、コンプレッサ1で圧縮された高温・高圧のガス冷媒は、冷房時の位置に切替えられた四方弁2を実線矢印の向きに流れ、まず車室外熱交換器3で熱交換し凝縮液化し膨張弁5で絞られて断熱膨張し低温・低圧の液冷媒となる。 [0015] In the air conditioner shown in FIG. 1, as in the case of cooling operation Conventionally, gas refrigerant compressed high temperature and high pressure by the compressor 1, a four-way valve 2 is switched to the position at the time of cooling the solid line flows in the direction of the arrow, is throttled by the expansion valve 5 and the heat exchanger and condensed the adiabatic expansion to low-temperature and low-pressure liquid refrigerant is first in the outer heat exchanger 3. その液冷媒は、車室内吸熱用熱交換器4で車室内空気循環用ファン11によって送り込まれる循環空気と熱交換し蒸発気化し低温・低圧のガス冷媒となり、四方弁2を経由せずコンプレッサ1 The liquid refrigerant is circulated exchanging heat with air and evaporates becomes low-temperature low-pressure gas refrigerant fed by the room air circulation fans 11 in the passenger compartment heat absorbing heat exchanger 4, a compressor 1 without passing through the four-way valve 2
の吸入側に戻る。 Back to the suction side.

【0016】一方、暖房運転の場合、コンプレッサ1で圧縮された高温・高圧のガス冷媒は、暖房用に冷媒回路を切替えられた四方弁2を経由することにより、破線矢印で示すごとく四方弁2と車室内に設けられた車室内放熱用熱交換器6とを結ぶ冷媒配管を経て車室内放熱用熱交換器6に圧送され、車室内空気循環用ファン11により送り込まれる車室内循環空気に冷却されることにより凝縮液化するとともに循環空気を加熱する。 [0016] On the other hand, when the heating operation, gas refrigerant compressed high temperature and high pressure by the compressor 1, by way of the four-way valve 2 is switched to a refrigerant circuit for heating, the four-way valve as indicated by broken line arrows 2 and it is pumped into the vehicle compartment radiating heat exchanger 6 through a refrigerant pipe connecting the vehicle interior radiating heat exchanger 6 provided in the vehicle compartment, cooling the vehicle interior circulation air fed by the room air circulation fans 11 is the heat the circulated air as well as condensed and liquefied by.

【0017】凝縮液化した液冷媒は膨張弁7を経由して四方弁2を通り車室外熱交換器3、膨張弁5、車室内吸熱用熱交換器4を経てコンプレッサ1の吸入側に戻る。 The condensed and liquefied liquid refrigerant four-way valve 2 as car outdoor heat exchanger 3 via the expansion valve, the expansion valve 5 and returns to the suction side of the compressor 1 through the passenger compartment heat absorbing heat exchanger 4.
この場合、膨張弁7を全開とし膨張弁5を絞り制御とすると、車室外熱交換器3は高圧冷媒側となり、車室外熱交換器用ファン10により導入される外気により冷却されることにより凝縮液化し、放熱するためその分だけ車室内放熱用熱交換器6での放熱が少なくなり、車室内空気循環用ファン11により送られる循環空気への加熱は少なくなる。 In this case, when the control diaphragm expansion valve 5 is fully opened expansion valve 7, condensed by the outer heat exchanger 3 becomes high pressure refrigerant side is cooled by the outside air introduced by the outer heat exchanger fan 10 and, the heat radiation at that much cabin radiating heat exchanger 6 for heat dissipation is reduced, heating to circulate the air delivered by the room air circulation fan 11 is reduced.

【0018】車室外熱交換器3で凝縮液化した冷媒は、 [0018] The refrigerant condensed and liquefied in the outer heat exchanger 3,
絞り制御されている膨張弁5で絞られ断熱膨張し、低温・低圧の液冷媒となり車室内吸熱用熱交換器4に至り、 Is throttled by the expansion valve 5 which is aperture control adiabatic expands, leading to become cabin heat absorbing heat exchanger 4 and the low-temperature and low-pressure liquid refrigerant,
車室内空気循環用ファン11により送り込まれる車室内循環空気と熱交換し車室内循環空気を冷却する。 The vehicle interior circulation air heat exchanger and passenger compartment circulates air fed by the room air circulation fan 11 for cooling. 冷却によって車室内吸熱用熱交換器4表面に発生する結露水は、その受け皿であるドレンパン20に滴下、ドレン排出パイプ21を経て車室外に排出される。 Dew condensation water generated in the passenger compartment heat absorbing heat exchanger 4 surface by cooling, added dropwise to a drain pan 20 which is a pan, and is discharged outside the vehicle compartment via the drain discharge pipe 21. こうして車室内吸熱用熱交換器4を通過した車室内循環空気は冷却・ Cabin circulating air passing through the passenger compartment heat absorbing heat exchanger 4 thus cooling and
除湿される。 Removal is dehumidified. 車室内吸熱用熱交換器4で蒸発気化した低温・低圧のガス冷媒はコンプレッサ1の吸入側に戻る。 Cabin heat absorbing heat exchanger 4 by evaporation vaporized low-temperature low-pressure gas refrigerant returns to the suction side of the compressor 1.

【0019】一方、膨張弁7を絞り制御とし膨張弁5を全開とすると、膨張弁7で絞り制御された冷媒は低温・ Meanwhile, when fully opening the expansion valve 5 as a control throttle expansion valve 7, controlled refrigerant throttle in the expansion valve 7 is low,
低圧の液冷媒となり、車室外熱交換器3に至り車室外熱交換器用ファン10により導入される外気より吸熱し、 Becomes a low-pressure liquid refrigerant absorbs heat from the outside air introduced by the lead vehicle outdoor heat exchanger fan 10 to the outer heat exchanger 3,
全開の膨張弁5を経て車室内吸熱用熱交換器4に至り、 Reaches the passenger compartment heat absorbing heat exchanger 4 through the expansion valve 5 fully opened,
そこで車室内空気循環用ファン11により送り込まれる車室内循環空気と熱交換して車室内循環空気から吸熱することにより車室内循環空気を冷却・除湿して低温・低圧のガス冷媒となりコンプレッサ1に戻る。 Back to the compressor 1 becomes a low-temperature low-pressure gas refrigerant So by absorbing heat from the passenger compartment circulating air cabin circulating air by heat exchange is fed by the vehicle interior air circulation fan 11 to the vehicle interior circulation air dampening cooling and removal .

【0020】この場合の冷却・除湿性能は車室外熱交換器3と分担するため、車室内吸熱用熱交換器4における冷却・除湿性能は前述の膨張弁7を全開、膨張弁5を絞り制御とした場合に比較して少なくなる。 The cooling and dehumidifying performance in this case is to share with the outer heat exchanger 3, the cooling and dehumidifying performance in the passenger compartment heat absorbing heat exchanger 4 fully opening the expansion valve 7 described above, aperture control the expansion valve 5 less in comparison with the case of a. また膨張弁7 The expansion valve 7
及び5を同時に絞り制御した場合、車室外熱交換器3は前述の場合の中間的な圧力となり車室内吸熱用熱交換器4での冷却・除湿能力を任意に制御できることとなる。 And if 5 was simultaneously aperture control, outer heat exchanger 3 becomes able to arbitrarily control the cooling and dehumidifying capacity in intermediate pressure and becomes cabin heat absorbing heat exchanger 4 when the aforementioned.

【0021】以上説明したように、本実施形態による空気調和装置では、従来の空気調和装置に対して車室内放熱用熱交換器6及び膨張弁7とそれらを連通する冷媒配管を追加し、車室内空気循環用ファン11、車室内吸熱用熱交換器4、車室内放熱用熱交換器6を図示のように配置することにより車室内空気循環用ファン11により送り込まれた車室内循環空気は、車室内吸熱用熱交換器4で冷却・除湿されるが車室内放熱用熱交換器6により加熱されることにより、車内温度を低下させることなく除湿が可能である。 [0021] As described above, in the air conditioner of this embodiment, by adding the refrigerant pipe which communicates them with cabin radiating heat exchanger 6 and the expansion valve 7 to a conventional air conditioner, car indoor air circulation fans 11, cabin heat absorbing heat exchanger 4, the vehicle interior circulation air sent by the room air circulation fan 11 by arranging, as shown in the passenger compartment heat radiating heat exchanger 6, by vehicle is indoors heat absorbing heat exchanger 4 is dehumidified cooled and divided are heated by the cabin heat radiating heat exchanger 6, it is possible dehumidification without lowering the interior temperature.

【0022】従って、本実施形態による空気調和装置では、暖房時に車室内放熱用熱交換器6により加熱される車室内循環空気は車室内吸熱用熱交換器4で冷却・除湿されているので車両用空気調和装置の特に暖房時期に要求される窓ガラスの曇りを取り運転者の視認性を確保することが可能となる。 [0022] Accordingly, since the air conditioner of this embodiment, the vehicle interior circulating air heated by the cabin heat radiating heat exchanger 6 during heating is dehumidified cooled and divided by the cabin heat absorbing heat exchanger 4 vehicle in particular it is possible to ensure driver visibility take fogging of the window glass required for timing the heating of use the air conditioner. また本冷媒システムによれば車室内吸熱用熱交換器4は常に低圧側となるためラミネートエバポレータ(積層型エバポレータ)が使用可能となりコスト低減がはかれる。 The laminate evaporator for the passenger compartment heat absorbing heat exchanger 4 according to the present refrigerant system always becomes the low pressure side (the laminated evaporator) cost reduction becomes possible uses achieved.

【0023】また、本実施形態の空気調和装置においては、冷房運転時には四方弁2が冷房側に切替えられることにより車室内放熱用熱交換器6、膨張弁7に冷媒が流れないこと、及び車室内吸熱用熱交換器4を出た冷媒が四方弁2を経由することなく直接コンプレッサ1に吸入側に流れ込むため冷媒サイクルが簡素化され、圧力損失の低減がはかれる。 Further, in the air conditioning apparatus of the present embodiment, the refrigerant does not flow to the passenger compartment heat radiating heat exchanger 6, the expansion valve 7 by the four-way valve 2 is switched to the cooling side at the time of cooling operation, and vehicle It simplifies refrigerant cycle for flowing into the suction side directly to the compressor 1 without the refrigerant exiting the indoor heat absorbing heat exchanger 4 via the four-way valve 2, the reduction of the pressure loss can be achieved.

【0024】(第2実施形態)次に、図2に示した第2 [0024] (Second Embodiment) Next, a second as shown in FIG. 2
実施形態について説明する。 Embodiments will be described. 図2において、8は電磁弁を示し、この電磁弁8は、前記した四方弁2と膨張弁7 2, 8 indicates a solenoid valve, the solenoid valve 8, the above-described four-way valve 2 and the expansion valve 7
を結ぶ冷媒配管とコンプレッサ1の吸入側との間に配置されている。 It is disposed between the suction side of the refrigerant pipe and the compressor 1 connecting. その他の構成は、第1実施形態による空気調和装置の構成と実質同じであり、それについての説明は省略する。 Other configurations are the configuration and substantially the same of the air conditioning apparatus according to the first embodiment, the description thereof will be omitted.

【0025】以上の構成をもつ本実施形態による空気調和装置において、暖房運転の場合は、膨張弁7とコンプレッサ1の吸入側とを繋ぐ冷媒配管の途中に設けられた電磁弁8が閉となるよう制御されるため各機器の動作、 [0025] In the air conditioner of this embodiment having the configuration described above, in the case of heating operation, the electromagnetic valve 8 provided in the middle of a refrigerant pipe connecting the suction side of the expansion valve 7 and the compressor 1 is closed operation of each device to be controlled,
冷媒の流れる経路は図1に示された第1実施形態による空気調和機の場合と全く同じになり除湿・暖房が行われる。 Flowing path refrigerant exactly the same dehumidifying and heating the case of an air conditioner according to the first embodiment shown in FIG. 1 is performed.

【0026】一方、冷房運転の場合は、電磁弁8及び膨張弁7が開となるよう制御されるとともに、四方弁2が切り替わりコンプレッサ1で圧縮された高温・高圧のガス冷媒は実線矢印で示す向きに流れ、図1に示した第1 On the other hand, in the case of cooling operation, while being controlled so that the electromagnetic valve 8 and an expansion valve 7 is opened, the gas refrigerant compressed high temperature and high pressure by the compressor 1 switches between four-way valve 2 is indicated by the solid line arrows flows in the direction, the shown in FIG. 1 1
実施形態の冷房運転の場合と同様の経路を経てコンプレッサ1の吸入側に戻る。 Back to the suction side of the compressor 1 through the same path as in the cooling operation of the embodiment.

【0027】ただこの場合、電磁弁8及び膨張弁7が開となっていることより、四方弁2が切り替わって四方弁2と車室内放熱用熱交換器6との間の冷媒配管、車室内放熱用熱交換器6及び車室内放熱用熱交換器6と膨張弁7を含む四方弁2に至る冷媒配管に残っている冷媒はコンプレッサ1の吸入側に流れ込み、冷房運転の場合も冷媒システムに充填された冷媒を有効に使用し、所定の冷房能力を得ることが可能となる。 [0027] However in this case, refrigerant pipes, the cabin between from the solenoid valve 8 and an expansion valve 7 are open, and the four-way valve 2 and the passenger compartment heat radiating heat exchanger 6 is switched four-way valve 2 refrigerant remaining the radiation heat exchanger 6 and the passenger compartment heat radiating heat exchanger 6 to the refrigerant pipe leading to the four-way valve 2 including the expansion valve 7 flows into the suction side of the compressor 1, the refrigerant system in the case of cooling operation effectively use the filled refrigerant, it is possible to obtain a predetermined cooling capacity.

【0028】 [0028]

【発明の効果】以上説明したように、本発明は、電動モータ駆動のコンプレッサ、四方弁、車室外熱交換器、車室内吸熱用熱交換器、及び、同車室外熱交換器と車室内吸熱用熱交換器の間に設けられた膨張弁を有する電気自動車用ヒートポンプ式空気調和装置において、前記車室内吸熱用熱交換器の車室内循環空気流の後流側に配置され暖房時に前記コンプレッサで加圧された高温・高圧のガス冷媒が導かれる車室内放熱用熱交換器と、同車室内放熱用熱交換器と前記四方弁との間の冷媒配管に配置された膨張弁とを備え、前記2つの膨張弁の少なくともいずれか一方を絞り制御するように構成した電気自動車用ヒートポンプ式空気調和装置を提供する。 As described above, according to the present invention, the electric motor driving the compressor, four-way valve, the outer heat exchanger, the cabin heat absorbing heat exchanger, and, taking the same car outdoor heat exchanger and the vehicle interior endothermic in the heat pump type air conditioner for an electric vehicle having an expansion valve provided between the use heat exchanger, in the vehicle interior is arranged on the downstream side after the cabin circulating air flow of the heat absorbing heat exchanger the compressor during heating includes a cabin heat radiating heat exchanger gas refrigerant pressurized high temperature and high pressure is introduced, and the expansion valve disposed in the refrigerant pipe between the four-way valve and taking the same car indoor heat radiating heat exchanger, to provide an arrangement the heat pump type air conditioner for electric vehicles to control aperture of the at least one of the two expansion valves.

【0029】このように構成された本発明の電気自動車用ヒートポンプ式空気調和装置によると、暖房運転時に高温・高圧のガス冷媒が導かれる車室内放熱用熱交換器で加熱される車室内循環空気は、車室内吸熱用熱交換器で除湿されているので、暖房運転時に窓ガラスの曇りを取り、ドライバーに対する視認性を確保することが可能となる。 [0029] According to the electric vehicle heat pump type air conditioner of the thus constructed present invention, the vehicle interior circulation air is heated by the cabin heat radiating heat exchanger high-temperature high-pressure gas refrigerant is led to the heating operation since being dehumidified cabin heat absorbing heat exchanger takes the fogging of the window glass at the time of heating operation, it is possible to secure the visibility of the driver.

【0030】また、本発明による空気調和装置では、車室外熱交換器と車室内吸熱用熱交換器の間に設けられた膨張弁と、車室内放熱用熱交換器と四方弁との間に配置された膨張弁の絞り制御を変えることにより車室内吸熱用熱交換器での冷却・除湿能力と、車室内放熱用熱交換器での加熱能力を調節することが可能となり、車室内に対し所望の除湿を行うことができる。 Further, in the air conditioner of the present invention, between the expansion valve provided between the outer heat exchanger and the cabin heat absorbing heat exchanger, the cabin heat radiating heat exchanger and the four-way valve a cooling-dehumidifying capacity in the passenger compartment heat absorbing heat exchanger by varying the aperture control of the deployed expansion valve, it is possible to adjust the heating capacity in the passenger compartment heat radiating heat exchanger relative to the passenger compartment desired dehumidification can be carried out.

【0031】また、本発明の空気調和装置において、四方弁と車室内放熱用熱交換器との間の膨張弁の出口とコンプレッサの吸入側を介して繋がれ、冷房運転時に開となる電磁弁を設けた構成としたものでは、冷房運転時に、車室内放熱用熱交換器、膨張弁やこれらを結ぶ冷媒配管に残っている冷媒はコンプレッサの吸入側に流れ込んで冷房用冷媒として有効に使用されるものとなる。 Further, in the air conditioning apparatus of the present invention, connected via the suction side of the outlet and the compressor of the expansion valve between the four-way valve and the passenger compartment heat radiating heat exchanger, an electromagnetic valve which is opened during the cooling operation obtained by the structure provided with, at the time of cooling operation, the passenger compartment heat radiating heat exchanger, the refrigerant remaining in the refrigerant pipe connecting the expansion valve and these are effectively used as cooling refrigerant flows into the suction side of the compressor It becomes shall.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の第1実施形態による電気自動車用ヒートポンプ式空気調和装置の冷媒系統図。 [1] The refrigerant system diagram of an electric vehicle for a heat pump type air conditioner of the first embodiment of the present invention.

【図2】本発明の第2実施形態による電気自動車用ヒートポンプ式空気調和装置の冷媒系統図。 [2] The refrigerant system diagram of an electric vehicle for a heat pump type air conditioner according to a second embodiment of the present invention.

【図3】従来の電気自動車用ヒートポンプ式空気調和装置の冷媒系統図。 [3] The refrigerant system diagram of a conventional electric automobile heat pump type air conditioner.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 コンプレッサ 2 四方弁 3 車室外熱交換器 4 車室内吸熱用熱交換器 5 膨張弁 6 車室内放熱用熱交換器 7 膨張弁 8 電磁弁 10 車室外熱交換器用ファン 11 車室内空気循環用ファン 20 ドレンパン 21 ドレン排出パイプ 1 compressor 2 four-way valve 3 the outer heat exchanger 4 cabin heat absorbing heat exchanger 5 expansion valve 6 cabin radiating heat exchanger 7 expansion valve 8 the solenoid valve 10 the outer heat exchanger fan 11-room air circulation fans 20 drain pan 21 drainage pipe

Claims (2)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 電動モータ駆動のコンプレッサ、四方弁、車室外熱交換器、車室内吸熱用熱交換器、及び、同車室外熱交換器と車室内吸熱用熱交換器の間に設けられた膨張弁を有する電気自動車用ヒートポンプ式空気調和装置において、前記車室内吸熱用熱交換器の車室内循環空気流の後流側に配置され暖房時に前記コンプレッサで加圧された高温・高圧のガス冷媒が導かれる車室内放熱用熱交換器と、同車室内放熱用熱交換器と前記四方弁との間の冷媒配管に配置された膨張弁とを備え、前記2つの膨張弁の少なくともいずれか一方を絞り制御するように構成したことを特徴とする暖冷房、除湿機能を持たせた電気自動車用ヒートポンプ式空気調和装置。 1. A motor driven compressor, the four-way valve, the outer heat exchanger, the cabin heat absorbing heat exchanger, and, provided between taking the same car outdoor heat exchanger and the cabin heat absorbing heat exchanger in the heat pump type air conditioner for an electric vehicle having an expansion valve, the passenger compartment heat absorbing heat exchanger in the passenger compartment circulates is disposed on the downstream side after the air flow the compressor with the pressurized high-temperature high-pressure gas refrigerant during a heating a cabin heat radiating heat exchanger is derived, and a expansion valve disposed in the refrigerant pipe between the four-way valve and taking the same car indoor heat radiating heat exchanger, whereas at least one of the two expansion valves warm and characterized by being configured to control the diaphragm cooling, dehumidification function have allowed electric automobile heat pump type air conditioner.
  2. 【請求項2】 前記四方弁と前記車室内放熱用熱交換器との間の前記膨張弁の出口と前記コンプレッサの吸入側を介して繋がれ、冷房運転時に開となる電磁弁を設けたことを特徴とする請求項1記載の電気自動車用ヒートポンプ式空気調和装置。 2. A coupled via the outlet and the suction side of the compressor of the expansion valve between the passenger compartment heat radiating heat exchanger and the four-way valve, providing the solenoid valve is opened during the cooling operation electric automotive heat pump type air conditioner according to claim 1, characterized in.
JP21038099A 1999-07-26 1999-07-26 Heat pump air conditioner for electric vehicle Pending JP2001030743A (en)

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Publication number Priority date Publication date Assignee Title
WO2011132429A1 (en) 2010-04-23 2011-10-27 パナソニック株式会社 Vehicle air conditioning device
JP2012001037A (en) * 2010-06-15 2012-01-05 Panasonic Corp Air conditioning device for vehicle
JP2012001036A (en) * 2010-06-15 2012-01-05 Panasonic Corp Air conditioner for vehicle
CN103743168A (en) * 2014-01-16 2014-04-23 浙江春晖智能控制股份有限公司 Heat pump air-conditioning system for electric automobile
WO2014173201A1 (en) * 2013-04-27 2014-10-30 杭州三花研究院有限公司 Air conditioning system and heat exchanger
US20170158019A1 (en) * 2011-05-26 2017-06-08 Panasonic Intellectual Property Management Co., Ltd. Air conditioning device for vehicle

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011132429A1 (en) 2010-04-23 2011-10-27 パナソニック株式会社 Vehicle air conditioning device
US9211778B2 (en) 2010-04-23 2015-12-15 Panasonic Intellectual Property Management Co., Ltd. Vehicle air conditioning device
US20120117993A1 (en) * 2010-04-23 2012-05-17 Panasonic Corporation Vehicle air conditioning device
EP2562017A1 (en) * 2010-04-23 2013-02-27 Panasonic Corporation Vehicle air conditioning device
EP2562017A4 (en) * 2010-04-23 2013-09-25 Panasonic Corp Vehicle air conditioning device
JP2012001037A (en) * 2010-06-15 2012-01-05 Panasonic Corp Air conditioning device for vehicle
JP2012001036A (en) * 2010-06-15 2012-01-05 Panasonic Corp Air conditioner for vehicle
US20170158019A1 (en) * 2011-05-26 2017-06-08 Panasonic Intellectual Property Management Co., Ltd. Air conditioning device for vehicle
US9931905B2 (en) * 2011-05-26 2018-04-03 Panasonic Intellectual Property Management Co., Ltd. Air conditioning device for vehicle
WO2014173201A1 (en) * 2013-04-27 2014-10-30 杭州三花研究院有限公司 Air conditioning system and heat exchanger
US9751378B2 (en) 2013-04-27 2017-09-05 Hangzhou Sanhua Research Institute Co., Ltd. Air conditioning system and heat exchanger
CN103743168A (en) * 2014-01-16 2014-04-23 浙江春晖智能控制股份有限公司 Heat pump air-conditioning system for electric automobile

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