WO2014045767A1 - Air conditioning device for vehicle - Google Patents

Air conditioning device for vehicle Download PDF

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Publication number
WO2014045767A1
WO2014045767A1 PCT/JP2013/071932 JP2013071932W WO2014045767A1 WO 2014045767 A1 WO2014045767 A1 WO 2014045767A1 JP 2013071932 W JP2013071932 W JP 2013071932W WO 2014045767 A1 WO2014045767 A1 WO 2014045767A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
air conditioner
vehicle air
vehicle
shroud
Prior art date
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PCT/JP2013/071932
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French (fr)
Japanese (ja)
Inventor
章寛 小池
Original Assignee
日産自動車株式会社
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Publication date
Application filed by 日産自動車株式会社 filed Critical 日産自動車株式会社
Priority to JP2014536684A priority Critical patent/JP5915761B2/en
Publication of WO2014045767A1 publication Critical patent/WO2014045767A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3229—Cooling devices using compression characterised by constructional features, e.g. housings, mountings, conversion systems

Definitions

  • the present invention relates to a vehicle air conditioner [an air conditioner for a vehicle].
  • Patent Document 1 discloses an air conditioner for an electric vehicle using a heat pump cycle (refrigeration cycle) that is also used for air conditioning, similar to a home air conditioner.
  • the outdoor heat exchanger arranged in the motor compartment at the front of the vehicle functions as an evaporator during heating and functions as a condenser during cooling.
  • An outdoor fan is disposed behind the outdoor heat exchanger.
  • an outdoor heat exchanger may be iced (frosted) due to moisture from the outside air during heating operation.
  • the outdoor heat exchanger When the outdoor heat exchanger is iced (frosted), its heat exchange efficiency is lowered, and thus ice (frost) is melted by deice / defrost operation.
  • the water generated by the dissolution flows down the outdoor heat exchanger and accumulates in the lower part of the shroud covering the outdoor fan. If the accumulated water freezes, there is a concern about the malfunction of the outdoor fan.
  • An object of the present invention is to provide a vehicle air conditioner that can prevent water adhering to a heat exchanger from collecting in a shroud of a blower and prevent malfunction of the blower due to freezing of accumulated water. is there.
  • a feature of the present invention is an air conditioner for a vehicle, wherein the heat exchanger performs heat exchange between a refrigerant flowing inside and outside air, and is disposed in front of or behind the heat exchanger, so that the heat exchange is performed.
  • a blower that allows the outside air to pass through the ventilator, and a shroud that has a cylindrical flange that surrounds the outer periphery of the blower, and a drain port that drains water flowing down from the heat exchanger to the outside, the bottom of the cylindrical flange
  • the air conditioner for vehicles formed in the said heat exchanger side is provided.
  • the vehicle air conditioner of this embodiment is mounted on an electric vehicle, and uses a heat pump cycle (refrigeration cycle) that also serves as an air conditioning unit, similar to a home air conditioner.
  • a heat pump cycle refrigeration cycle
  • an air conditioning duct 3 extends in the front-rear direction in a motor compartment 1 at the front of the vehicle.
  • a radiator 5 Inside the duct 3, from the front to the rear, a radiator 5, an outdoor heat exchanger [outside ⁇ heat exchanger] (heat exchanger in claims) 7, an outdoor fan [outside fans] (blower in claims) 9 are arranged in this order.
  • the outdoor heat exchanger 7 is one of the components of the heat pump cycle.
  • the radiator 5 is provided to cool a heat source such as a drive motor (not shown).
  • a pipe for circulating a coolant such as cooling water is connected between the heat source and the radiator 5.
  • the refrigerant heated by the heat generation source is cooled by the outside air.
  • the cooled cooling water is sent again to the heat generation source.
  • a passenger compartment 11 is provided behind the motor compartment 1 (on the right side in FIG. 3) via a dash panel (indicated by a one-dot chain line in FIG. 3).
  • An air conditioning unit 12 is disposed in the passenger compartment 11.
  • An evaporator 13 and a condenser 14 are arranged in the air conditioning unit 12.
  • Each of the evaporator 13 and the condenser 14 is one of the components of the heat pump cycle.
  • the evaporator 13 and the condenser 14 constitute an indoor heat exchanger. In the cooling operation, the evaporator 13 cools the air supplied to the passenger compartment 11, and in the heating operation, the condenser 14 warms the air supplied to the passenger compartment 11.
  • a first flow path 12a in which a condenser 14 is disposed, and a second flow path 12b separated from the first flow path 12a by a partition wall 15 are provided.
  • An air mix door 16 is provided at an end of the partition wall 15 on the evaporator 13 side. During heating, the air mix door 16 is set at a position indicated by a solid line, and the conditioned air heated by the condenser 14 is supplied to the vehicle compartment 11 through the first flow path 12a. At the time of cooling, the air mix door 16 is set at a position indicated by a two-dot chain line, and the conditioned air cooled by the evaporator 13 is supplied to the vehicle compartment 11 through the second flow path 12b.
  • the outdoor heat exchanger 7, the evaporator 13 and the condenser 14 are connected to each other by a refrigerant pipe 17.
  • a compressor 19 two expansion valves (orifices) 20 and 21, a two-way valve 22 and a three-way valve 23 disposed in the motor compartment 1 are also provided on the refrigerant pipe 17.
  • the outdoor fan 9 sends outside air to the radiator 5 and the outdoor heat exchanger 7 to promote heat exchange in the radiator 5 and the outdoor heat exchanger 7.
  • FIG. 2 is a perspective view of the outdoor heat exchanger unit 25 as viewed from the vehicle rear side
  • FIG. 1 is an exploded perspective view of the outdoor heat exchanger unit 25 as viewed from the vehicle front side.
  • the outdoor heat exchanger 7 is disposed on the front surface of a carrier 27 configured by a substantially rectangular frame that is long in the lateral direction, and is fixed to the carrier 27 from behind by a plurality of bolts 29. Yes.
  • the lower portion of the carrier 27 is supported by a lower support [lower support] (cross member) 31, and the upper portion is supported by an upper support [upper support] 33.
  • the lower support body 31 and the upper support body 33 are formed long in the lateral direction, and are fixed to the vehicle body.
  • the carrier 27, the lower support body 31 and the upper support body 33 constitute a support member [support member].
  • the two outdoor fans 9 are arranged side by side and are driven by a fan motor.
  • the outdoor fan 9 is rotatably supported by a fan shroud (fan shroud) 35.
  • the fan shroud 35 includes a cylindrical flange 35 a that protrudes to the opposite side of the outdoor heat exchanger 7 for each of the outdoor fans 9.
  • the cylindrical flange 35a surrounds the outer periphery of the outdoor fan 9.
  • the fan shroud 35 is assembled to the carrier 27 from the rear, and is fixed to the carrier 27 by a plurality of bolts 37.
  • the fan shroud 35 has a bottom wall 35c extending laterally at the bottom thereof.
  • the bottom wall 35 c is integrated with the cylindrical flange 35 a and projects forward from the outdoor fan 9.
  • the bottom wall 35c is formed with cutouts 35d corresponding to the outdoor fan 9 and opened forward.
  • Each notch 35d is formed in a rectangular shape that is long in the horizontal direction in plan view.
  • three U-shaped recesses [notches] 35e are formed at the rear edge of each notch 35d.
  • the recess 35e communicates with the notch 35d, and is formed from the bottom wall 35c to the bottom 35a1 of the cylindrical flange 35a.
  • each notch 35 one of the recesses 35e is provided at the center of the notch 35d, and the other two are provided at both ends of the notch 35d.
  • One notch 35d and three recesses 35e form one drain outlet.
  • the drain outlet may be formed by a single notch formed in a rectangular shape from the bottom wall 35c to the bottom 35a1. That is, the drain outlet in this case is formed by forming the cutout portion 35d of this embodiment not only from the bottom wall 35c but from the bottom wall 35c to the bottom portion 35a1.
  • the drain outlet is a vertical line passing through the center O and a straight line A connecting the center O of the cylindrical flange 35 a and one end P on the cylindrical flange 35 a of the notch 35 d (drain outlet).
  • the angle ⁇ (> 0) formed by the line T is formed to be at least 15 degrees.
  • the bottom portion 35 a 1 in which the concave portion 35 e is formed is located below the bottom wall 35 c and is located at the lowermost portion of the entire fan shroud 35. Therefore, the central recess 35 e among the three recesses 35 e is located at the lowermost end of the fan shroud 35.
  • the drain port (notch 35 d and recess 35 e) is the lowermost end of the outdoor fan 9. It is located directly below 9a, that is, vertically below.
  • H 1 a horizontal line at the time of pitching in which the front part of the vehicle body is lifted upward from the rear part
  • H 2 a horizontal line at the time of pitching in which the rear part is lifted upward from the front part
  • 6 and 7 show a lower support body (cross member) 31 extending in the lateral direction.
  • the carrier 27 is positioned between the two outdoor fans 9 and an upper portion 27a and a lower portion 27b extending in the lateral direction, side portions 27c and 27d connected to both ends of the upper portion 27a and the lower portion 27b, respectively. And a central portion 27e connected to the center of the upper portion 27a and the lower portion 27b.
  • the rear end 27b1 of the lower portion 27b and the front end 35c1 of the bottom wall 35c of the fan shroud 35 are brought into contact with each other.
  • the open side of the notch 35d formed in the bottom wall 35c is closed by the lower portion 27b. Therefore, the drainage port composed of the notch 35d and the three recesses 35e is provided at the abutting portion between the fan shroud 35 and the carrier 27 constituting the support member.
  • the high-temperature refrigerant compressed by the compressor 19 dissipates heat in the condenser 14 and is condensed.
  • the air mix door 16 is set at a solid line position, and the outside air sucked by the indoor intake fan (not shown) as shown by an arrow C passes through the evaporator 13 and the condenser 14,
  • the conditioned air (warm air) is supplied from the first flow path 12a to the vehicle compartment 11.
  • the refrigerant discharged from the condenser 14 passes through the expansion valve 20 and is heated by the outdoor heat exchanger 7, and is returned to the compressor 19 through the three-way valve 23.
  • the refrigerant does not flow through the expansion valve 21 and the evaporator 13.
  • the two-way valve 22 is closed. That is, in the heating operation, the three-way valve 23 causes the refrigerant to flow from the outdoor heat exchanger 7 to the compressor 19, bypassing the expansion valve 21 and the evaporator 13.
  • the outdoor heat exchanger 7 may be iced (frosted) by moisture from the outside air (particularly, between the tubes).
  • the heat exchange efficiency is lowered. Therefore, the degassing / frosting operation is performed by flowing hot gas through the outdoor heat exchanger 7.
  • the high-temperature refrigerant compressed by the compressor 19 flows through the condenser 14 as in the heating operation, but the air mix door 16 is set at a two-dot chain line position. Heat dissipation is suppressed. At this time, the indoor intake fan is not operated.
  • the high-temperature refrigerant (hod gas) discharged from the condenser 14 flows into the outdoor heat exchanger 7 through the two-way valve 22. Since the high-temperature refrigerant flows inside the outdoor heat exchanger 7, ice and frost are melted.
  • the refrigerant discharged from the outdoor heat exchanger 7 is returned to the compressor 19 through the three-way valve 23.
  • the water W generated by melting ice and frost by the deicing / frosting operation flows down to the lower part 27 b of the carrier 27 supporting the outdoor heat exchanger 7, and further the fan shroud 35. It flows toward.
  • the drain port (notch 35d and recess 35e) is provided in the bottom wall 35c of the fan shroud 35, the water W is discharged downward from the drain port. Therefore, it is possible to suppress the accumulation of water at the bottom of the fan shroud 35, and it is possible to prevent malfunction of the outdoor fan 9 due to freezing of the accumulated water.
  • the drain outlet is located on the outdoor heat exchanger 7 side of the bottom 35a1 of the cylindrical flange 35a of the fan shroud 35, the water W flowing from the outdoor heat exchanger 7 can be quickly and effectively used. Can be discharged from the drain.
  • a carrier (support member) 27 that covers at least the lower part of the outdoor heat exchanger 7 and supports the fan shroud 35 is provided. Further, the drainage opening (notch 35 d and recess 35 e) of the fan shroud 35 is provided at the abutting portion between the fan shroud 35 and the carrier 27. For this reason, by cutting out the front end 35c1 on the carrier 27 side of the bottom wall 35c of the fan shroud 35, the drain port (notch 35d and recess 35e) can be easily formed.
  • the bottom portion 35 a 1 of the cylindrical flange 35 a is located at the lowermost portion of the fan shroud 35. Further, the central recess 35 e among the three recesses 35 e formed in the bottom 35 a 1 is located at the lowermost end of the fan shroud 35. Accordingly, the water W flowing from the outdoor heat exchanger 7 is reliably discharged from the recess 35e located at the lowermost end. That is, a highly reliable drainage structure is realized.
  • the drain ports are formed so that the angle ⁇ formed by the vertical line T and the straight line A or B is at least 15 degrees. Yes.
  • the roll angle of the vehicle body during normal travel rarely exceeds 15 degrees. Therefore, by forming the drainage port (notch 35d and recess 35e) so that the above-described angle ⁇ is at least 15 degrees, the drainage port is opened downward in the vertical direction even when the vehicle body is rolled. As a result, drainage is reliably performed regardless of the posture of the vehicle body.
  • the drain port (notch 35d and recess 35e) is located below the outdoor fan (blower) 9 in the vertical direction even when the pitching angle of the vehicle body is 15 degrees at the maximum.
  • the pitching angle of the vehicle body during normal driving rarely exceeds 15. Therefore, even when the vehicle body is pitched, the drainage port (notch 35d and recess 35e) is located immediately below the lowermost end 9a of the outdoor fan 9, so that the water W is quickly discharged from the drainage port (notch 35d and recess 35e).
  • the As a result drainage is reliably performed regardless of the posture of the vehicle body. In particular, when the water W adheres to the outdoor fan 9 and freezes, the outdoor fan 9 tends to malfunction. Therefore, promptly discharging the water W adhering to the outdoor fan 9 is effective in preventing malfunction.
  • the outdoor heat exchanger 7 functions as an evaporator in a heat pump cycle in heating operation. For this reason, even if a large amount of water is generated by performing deicing / frosting operation when the outdoor heat exchanger 7 is icing (frosting) in the heating operation, water can be quickly discharged from the drain outlet. .
  • the drain outlet does not drain only the water in which ice or frost adhered to the outdoor heat exchanger 7 is melted by the deicing / frosting operation, but adheres to the radiator 5 or the outdoor heat exchanger 7 while the vehicle is running. It also drains rain.
  • the vehicle of this embodiment is an electric vehicle, it may be an automobile equipped with an internal combustion engine.
  • the water adhering to the radiator for cooling the internal combustion engine is also drained from the drain port (notch 35d and recess 35e). That is, the drain port (notch 35d and recess 35e) prevents water flowing from the heat exchanger arranged in front of the air-conditioning outdoor fan (blower) from freezing below the fan shroud 35. , Avoid malfunction of outdoor fans.
  • the outdoor fan (blower) 9 is disposed behind the outdoor heat exchanger 7.
  • the outdoor fan (blower) 9 is disposed in front of the outdoor heat exchanger 7 and pushes the outside air into the outdoor heat exchanger 7. Good. That is, the blower is arranged in front of or behind the heat exchanger.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

An air conditioning device for a vehicle is provided with: a heat exchanger for exchanging heat between the outside air and a refrigerant which flows through the inside of the heat exchanger; a blower disposed in front of or behind the heat exchanger and causing the outside air to pass through the heat exchanger; and a shroud having a cylindrical flange for covering the outer periphery of the blower. A water discharge opening for discharging water, which flows down from the heat exchanger, to the outside is formed in the bottom of the cylindrical flange at a position near the heat exchanger. In the air conditioning device, water which adheres to the heat exchanger is prevented from accumulating within the shroud of the blower, and as a result, the operational failure of the blower caused by the freezing of the accumulated water is prevented.

Description

車両用空気調和装置Air conditioner for vehicles
　本発明は、車両用空気調和装置[an air conditioner for a vehicle]に関する。 The present invention relates to a vehicle air conditioner [an air conditioner for a vehicle].
　下記特許文献１は、家庭用空気調和装置と同様な、冷暖房兼用のヒートポンプサイクル（冷凍サイクル）を利用した電気自動車用の空気調和装置を開示している。この空気調和装置では、車両前部のモータコンパートメント内に配置された室外熱交換器は、暖房時に蒸発器として機能すると共に、冷房時には凝縮器として機能する。この室外熱交換器の後方には、室外ファンが配置されている。 Patent Document 1 below discloses an air conditioner for an electric vehicle using a heat pump cycle (refrigeration cycle) that is also used for air conditioning, similar to a home air conditioner. In this air conditioner, the outdoor heat exchanger arranged in the motor compartment at the front of the vehicle functions as an evaporator during heating and functions as a condenser during cooling. An outdoor fan is disposed behind the outdoor heat exchanger.
日本国特開２００３－３４１３０号公報Japanese Unexamined Patent Publication No. 2003-34130
　ヒートポンプサイクルを利用した車両用空気調和装置では、暖房運転時に、外気の水分によって室外熱交換器が着氷[iced]（着霜[frosted]）されることがある。室外熱交換器は着氷（着霜）されるとその熱交換効率が低下するので、除氷／霜運転[deice/defrost operation]によって氷（霜）が溶解される。溶解により発生した水は、室外熱交換器を流れ落ち、室外ファンを覆うシュラウドの下部に溜まる。溜まった水が凍結すると、室外ファンの作動不良が懸念される。 In a vehicle air conditioner using a heat pump cycle, an outdoor heat exchanger may be iced (frosted) due to moisture from the outside air during heating operation. When the outdoor heat exchanger is iced (frosted), its heat exchange efficiency is lowered, and thus ice (frost) is melted by deice / defrost operation. The water generated by the dissolution flows down the outdoor heat exchanger and accumulates in the lower part of the shroud covering the outdoor fan. If the accumulated water freezes, there is a concern about the malfunction of the outdoor fan.
　本発明の目的は、熱交換器に付着した水が送風機のシュラウドに溜まるのを抑制し、溜まった水の凍結による送風機の作動不良を防止することのできる車両用空気調和装置を提供することにある。 An object of the present invention is to provide a vehicle air conditioner that can prevent water adhering to a heat exchanger from collecting in a shroud of a blower and prevent malfunction of the blower due to freezing of accumulated water. is there.
　本発明の特徴は、車両用空気調和装置であって、内部を流れる冷媒と外気との間で熱交換を行う熱交換器と、前記熱交換器の前方又は後方に配置されて、前記熱交換器に前記外気を通過させる送風機と、前記送風機の外周を囲う筒状フランジを有するシュラウドと、を備え、前記熱交換器から流下する水を外部に排水する排水口が、前記筒状フランジの底部の前記熱交換器側に形成されている、車両用空気調和装置を提供する。 A feature of the present invention is an air conditioner for a vehicle, wherein the heat exchanger performs heat exchange between a refrigerant flowing inside and outside air, and is disposed in front of or behind the heat exchanger, so that the heat exchange is performed. A blower that allows the outside air to pass through the ventilator, and a shroud that has a cylindrical flange that surrounds the outer periphery of the blower, and a drain port that drains water flowing down from the heat exchanger to the outside, the bottom of the cylindrical flange The air conditioner for vehicles formed in the said heat exchanger side is provided.
車両用空気調和装置の実施形態における室外熱交換器及び室外ファンの分解斜視図である。It is a disassembled perspective view of the outdoor heat exchanger and outdoor fan in embodiment of the air conditioning apparatus for vehicles. 前記室外熱交換器及び前記室外ファンの斜視図である。It is a perspective view of the outdoor heat exchanger and the outdoor fan. 前記車両用空気調和装置の全体構成図である。It is a whole block diagram of the said air conditioning apparatus for vehicles. 前記室外ファンを覆うファンシュラウドの底部に形成された排水口近傍を示す斜視図である。It is a perspective view which shows the drain outlet vicinity formed in the bottom part of the fan shroud which covers the said outdoor fan. 前記ファンシュラウドの排水口近傍の正面図である。It is a front view near the drain outlet of the fan shroud. 前記ファンシュラウド及び前方に装着されるキャリアの排水口近傍の断面図である。It is sectional drawing of the drain opening vicinity of the said carrier shroud and the carrier with which it mounts ahead. 前記室外熱交換器から流れ落ちた水が排水口から排出される状態を示す断面図である。It is sectional drawing which shows the state from which the water which flowed down from the said outdoor heat exchanger is discharged | emitted from a drain outlet.
　以下、車両用空気調和装置の一実施形態を図１～図７を参照しつつ説明する。 Hereinafter, an embodiment of a vehicle air conditioner will be described with reference to FIGS.
　本実施形態の車両用空気調和装置は、電気自動車に搭載されており、家庭用空気調和装置と同様に、冷暖房兼用のヒートポンプサイクル（冷凍サイクル）を利用している。図３に示されるように、車両前部のモータコンパートメント[motor compartment]１内には、前後方向に空調用のダクト３が延設されている。ダクト３内には、前方から後方へと、ラジエータ５、室外熱交換器[outside heat exchanger]（請求項における熱交換器）７、室外ファン[outside fans]（請求項における送風機[blower]）９がこの順に配設されている。室外熱交換器７は、ヒートポンプサイクルの構成要素の一つである。 The vehicle air conditioner of this embodiment is mounted on an electric vehicle, and uses a heat pump cycle (refrigeration cycle) that also serves as an air conditioning unit, similar to a home air conditioner. As shown in FIG. 3, an air conditioning duct 3 extends in the front-rear direction in a motor compartment 1 at the front of the vehicle. Inside the duct 3, from the front to the rear, a radiator 5, an outdoor heat exchanger [outside 交換 heat exchanger] (heat exchanger in claims) 7, an outdoor fan [outside fans] (blower in claims) 9 Are arranged in this order. The outdoor heat exchanger 7 is one of the components of the heat pump cycle.
　ラジエータ５は、駆動用モータ（図示せず）などの発熱源を冷却するために設けられている。発熱源とラジエータ５との間には、冷却水などの冷媒を循環させる配管が接続されている。ラジエータ５では発熱源によって暖められた冷媒が外気によって冷却される。冷却された冷却水は、再度発熱源へ送られる。 The radiator 5 is provided to cool a heat source such as a drive motor (not shown). A pipe for circulating a coolant such as cooling water is connected between the heat source and the radiator 5. In the radiator 5, the refrigerant heated by the heat generation source is cooled by the outside air. The cooled cooling water is sent again to the heat generation source.
　モータコンパートメント１の後方（図３中で右側）には、ダッシュパネル（図３中一点鎖線にて示されている）を介して車室[passenger compartment]１１が設けられている。車室１１内には、空調ユニット１２が配置されている。空調ユニット１２内には、蒸発器１３及び凝縮器１４が配置されている。蒸発器１３及び凝縮器１４のそれぞれは、ヒートポンプサイクルの構成要素の一つである。蒸発器１３及び凝縮器１４は室内熱交換器を構成している。冷房運転では、蒸発器１３が車室１１に供給される空気を冷やし、暖房運転では、凝縮器１４が車室１１に供給される空気を暖める。 A passenger compartment 11 is provided behind the motor compartment 1 (on the right side in FIG. 3) via a dash panel (indicated by a one-dot chain line in FIG. 3). An air conditioning unit 12 is disposed in the passenger compartment 11. An evaporator 13 and a condenser 14 are arranged in the air conditioning unit 12. Each of the evaporator 13 and the condenser 14 is one of the components of the heat pump cycle. The evaporator 13 and the condenser 14 constitute an indoor heat exchanger. In the cooling operation, the evaporator 13 cools the air supplied to the passenger compartment 11, and in the heating operation, the condenser 14 warms the air supplied to the passenger compartment 11.
　空調ユニット１２内には、凝縮器１４が配置された第１流路１２ａと、第１流路１２ａとは隔壁１５によって隔てられた第２流路１２ｂとが設けられている。蒸発器１３側の隔壁１５の端部には、エアミックスドア[air mix door]１６が設けられている。暖房時にはエアミックスドア１６は実線で示される位置に設定され、凝縮器１４によって暖められた空調風が第１流路１２ａを通って車室１１に供給される。冷房時にはエアミックスドア１６は二点鎖線で示される位置に設定され、蒸発器１３によって冷やされた空調風が第２流路１２ｂを通って車室１１に供給される。 In the air conditioning unit 12, a first flow path 12a in which a condenser 14 is disposed, and a second flow path 12b separated from the first flow path 12a by a partition wall 15 are provided. An air mix door 16 is provided at an end of the partition wall 15 on the evaporator 13 side. During heating, the air mix door 16 is set at a position indicated by a solid line, and the conditioned air heated by the condenser 14 is supplied to the vehicle compartment 11 through the first flow path 12a. At the time of cooling, the air mix door 16 is set at a position indicated by a two-dot chain line, and the conditioned air cooled by the evaporator 13 is supplied to the vehicle compartment 11 through the second flow path 12b.
　室外熱交換器７、蒸発器１３及び凝縮器１４は、冷媒配管１７によって互いに接続されている。冷媒配管１７上には、モータコンパートメント１内に配置された圧縮機１９、二つの膨張弁（オリフィス）２０及び２１、二方弁２２並びに三方弁２３も設けられている。室外ファン９は、外気をラジエータ５や室外熱交換器７に送って、ラジエータ５や室外熱交換器７での熱交換を促進する。 The outdoor heat exchanger 7, the evaporator 13 and the condenser 14 are connected to each other by a refrigerant pipe 17. A compressor 19, two expansion valves (orifices) 20 and 21, a two-way valve 22 and a three-way valve 23 disposed in the motor compartment 1 are also provided on the refrigerant pipe 17. The outdoor fan 9 sends outside air to the radiator 5 and the outdoor heat exchanger 7 to promote heat exchange in the radiator 5 and the outdoor heat exchanger 7.
　室外熱交換器７及び室外ファン９は、図２に示されるように、室外熱交換器ユニット２５として一体化されている。図２は室外熱交換器ユニット２５を車両後方側から見た斜視図であり、図１は車両前方側から見た分解斜視図である。 The outdoor heat exchanger 7 and the outdoor fan 9 are integrated as an outdoor heat exchanger unit 25 as shown in FIG. FIG. 2 is a perspective view of the outdoor heat exchanger unit 25 as viewed from the vehicle rear side, and FIG. 1 is an exploded perspective view of the outdoor heat exchanger unit 25 as viewed from the vehicle front side.
　室外熱交換器７は、図１に示されるように、横方向に長いほぼ長方形の枠で構成されたキャリア２７の前面に配されており、複数のボルト２９によって後方からキャリア２７に固定されている。キャリア２７の下部は下部支持体[lower support]（クロスメンバ）３１によって支持され、上部は上部支持体[upper support]３３によって支持されている。下部支持体３１及び上部支持体３３は、横方向に長く形成されており、車体に固定されている。キャリア２７、下部支持体３１及び上部支持体３３によって、支持部材[support member]が構成されている。 As shown in FIG. 1, the outdoor heat exchanger 7 is disposed on the front surface of a carrier 27 configured by a substantially rectangular frame that is long in the lateral direction, and is fixed to the carrier 27 from behind by a plurality of bolts 29. Yes. The lower portion of the carrier 27 is supported by a lower support [lower support] (cross member) 31, and the upper portion is supported by an upper support [upper support] 33. The lower support body 31 and the upper support body 33 are formed long in the lateral direction, and are fixed to the vehicle body. The carrier 27, the lower support body 31 and the upper support body 33 constitute a support member [support member].
　二つの室外ファン９は、横方向に並設されており、ファンモータによって駆動される。室外ファン９は、ファンシュラウド[fan shroud]（請求項におけるシュラウド）３５に回転可能に支持されている。ファンシュラウド３５は、図２に示されるように、室外ファン９のそれぞれについて、室外熱交換器７の反対側に突出された筒状フランジ３５ａを備えている。筒状フランジ３５ａは、室外ファン９の外周をそれぞれ囲っている。 The two outdoor fans 9 are arranged side by side and are driven by a fan motor. The outdoor fan 9 is rotatably supported by a fan shroud (fan shroud) 35. As shown in FIG. 2, the fan shroud 35 includes a cylindrical flange 35 a that protrudes to the opposite side of the outdoor heat exchanger 7 for each of the outdoor fans 9. The cylindrical flange 35a surrounds the outer periphery of the outdoor fan 9.
　ファンシュラウド３５は、図１に示されるように、後方からキャリア２７に組み付けられ、複数のボルト３７によってキャリア２７に固定される。ファンシュラウド３５は、その底部に横方向に延びる底壁３５ｃを有している。底壁３５ｃは、筒状フランジ３５ａと一体化されており、かつ、室外ファン９よりも前方に突出されている。 As shown in FIG. 1, the fan shroud 35 is assembled to the carrier 27 from the rear, and is fixed to the carrier 27 by a plurality of bolts 37. The fan shroud 35 has a bottom wall 35c extending laterally at the bottom thereof. The bottom wall 35 c is integrated with the cylindrical flange 35 a and projects forward from the outdoor fan 9.
　底壁３５ｃには、室外ファン９に対応する、前方に向けて開放された切欠部[cutouts]３５ｄが形成されている。各切欠部３５ｄは、平面視で横方向に長い長方形状に形成されている。図４に示されるように、各切欠部３５ｄの後縁には、Ｕ字状の三つの凹部[notches]３５ｅが形成されている。凹部３５ｅは、切欠部３５ｄと連通されており、かつ、底壁３５ｃから筒状フランジ３５ａの底部３５ａ１にかけて形成されている。 The bottom wall 35c is formed with cutouts 35d corresponding to the outdoor fan 9 and opened forward. Each notch 35d is formed in a rectangular shape that is long in the horizontal direction in plan view. As shown in FIG. 4, three U-shaped recesses [notches] 35e are formed at the rear edge of each notch 35d. The recess 35e communicates with the notch 35d, and is formed from the bottom wall 35c to the bottom 35a1 of the cylindrical flange 35a.
　各切欠部３５において、凹部３５ｅのうちの一つが切欠部３５ｄの中央に設けられ、残りの二つが切欠部３５ｄの両端にそれぞれ設けられている。一つの切欠部３５ｄと三つの凹部３５ｅとで一つの排水口[drain outlet]が形成されている。なお、排水口は、底壁３５ｃから底部３５ａ１にかけて長方形状に形成された一つの切欠部によって形成されても良い。即ち、この場合の排水口は、本実施形態の切欠部３５ｄを、底壁３５ｃだけでなく、底壁３５ｃから底部３５ａ１にかけて形成することによって形成される。 In each notch 35, one of the recesses 35e is provided at the center of the notch 35d, and the other two are provided at both ends of the notch 35d. One notch 35d and three recesses 35e form one drain outlet. The drain outlet may be formed by a single notch formed in a rectangular shape from the bottom wall 35c to the bottom 35a1. That is, the drain outlet in this case is formed by forming the cutout portion 35d of this embodiment not only from the bottom wall 35c but from the bottom wall 35c to the bottom portion 35a1.
　排水口は、図５に示されるように、筒状フランジ３５ａの中心Ｏと切欠部３５ｄ（排水口）の筒状フランジ３５ａ上の一側端Ｐとを結ぶ直線Ａと、中心Ｏを通る鉛直線Ｔとがなす角度θ（＞０）が、少なくとも１５度となるよう形成されている。同様に、中心Ｏと切欠部３５ｄ（排水口）の筒状フランジ３５ａ上の他側端Ｑとを結ぶ直線Ｂと、鉛直線Ｔとがなす角度θ（＞０：＝直線Ａ側の角度θ）も、少なくとも１５度となるよう形成されている。即ち、角度θは、１５度以上に設定される。 As shown in FIG. 5, the drain outlet is a vertical line passing through the center O and a straight line A connecting the center O of the cylindrical flange 35 a and one end P on the cylindrical flange 35 a of the notch 35 d (drain outlet). The angle θ (> 0) formed by the line T is formed to be at least 15 degrees. Similarly, an angle θ (> 0: = angle θ on the straight line A side) formed by the straight line B connecting the center O and the other end Q on the cylindrical flange 35a of the notch 35d (drain port) and the vertical line T. ) Is also formed to be at least 15 degrees. That is, the angle θ is set to 15 degrees or more.
　また、凹部３５ｅが形成された底部３５ａ１は、図５に示されるように、底壁３５ｃより下方に位置し、ファンシュラウド３５全体の最下部に位置している。従って、三つの凹部３５ｅのうち中央の凹部３５ｅは、ファンシュラウド３５の最下端に位置している。 Further, as shown in FIG. 5, the bottom portion 35 a 1 in which the concave portion 35 e is formed is located below the bottom wall 35 c and is located at the lowermost portion of the entire fan shroud 35. Therefore, the central recess 35 e among the three recesses 35 e is located at the lowermost end of the fan shroud 35.
　また、図６に示されるように、車体がピッチ角δ（＞０：例えば、１５度）でピッチングしたときであっても、排水口（切欠部３５ｄ及び凹部３５ｅ）は室外ファン９の最下端９ａの直下、即ち、鉛直方向下方に位置する。なお、図６では、車体の前部が後部よりも上方に持ち上げられるピッチング時の水平線がＨ１、後部が前部より上方に持ち上げられるピッチング時の水平線がＨ２で示されている。また、図６及び図７には、横方向に延設された下部支持体（クロスメンバ）３１が示されている。 In addition, as shown in FIG. 6, even when the vehicle body is pitched at a pitch angle δ (> 0: for example, 15 degrees), the drain port (notch 35 d and recess 35 e) is the lowermost end of the outdoor fan 9. It is located directly below 9a, that is, vertically below. In FIG. 6, a horizontal line at the time of pitching in which the front part of the vehicle body is lifted upward from the rear part is indicated by H 1 , and a horizontal line at the time of pitching in which the rear part is lifted upward from the front part is indicated by H 2 . 6 and 7 show a lower support body (cross member) 31 extending in the lateral direction.
　キャリア２７は、図１に示すように、横方向に延びる上部２７ａ及び下部２７ｂと、これら上部２７ａ及び下部２７ｂの両端にそれぞれ連結された側部２７ｃ及び２７ｄと、二つの室外ファン９間に位置され、上部２７ａ及び下部２７ｂの中央に連結された中央部２７ｅと、を備えている。 As shown in FIG. 1, the carrier 27 is positioned between the two outdoor fans 9 and an upper portion 27a and a lower portion 27b extending in the lateral direction, side portions 27c and 27d connected to both ends of the upper portion 27a and the lower portion 27b, respectively. And a central portion 27e connected to the center of the upper portion 27a and the lower portion 27b.
　ファンシュラウド３５がキャリア２７に組み付けられると、下部２７ｂの後方端２７ｂ１と、ファンシュラウド３５の底壁３５ｃの前方端３５ｃ１とが互いに突き合わせられる。底壁３５ｃに形成された切欠部３５ｄの開放側は、下部２７ｂによって閉塞される。従って、切欠部３５ｄ及び三つの凹部３５ｅからなる排水口は、ファンシュラウド３５と支持部材を構成するキャリア２７との突き合わせ部に設けられる。 When the fan shroud 35 is assembled to the carrier 27, the rear end 27b1 of the lower portion 27b and the front end 35c1 of the bottom wall 35c of the fan shroud 35 are brought into contact with each other. The open side of the notch 35d formed in the bottom wall 35c is closed by the lower portion 27b. Therefore, the drainage port composed of the notch 35d and the three recesses 35e is provided at the abutting portion between the fan shroud 35 and the carrier 27 constituting the support member.
　図３に示されるように、暖房運転では、圧縮機１９で圧縮された高温冷媒は、凝縮器１４で放熱して凝縮される。このとき、エアミックスドア１６は実線位置に設定されており、矢印Ｃで示されるように室内の吸気ファン（図示せず）によって吸引された外気は、蒸発器１３及び凝縮器１４を通って、空調風（温風）として第１流路１２ａから車室１１に供給される。凝縮器１４から出た冷媒は、膨張弁２０を通って室外熱交換器７で吸熱して暖められ、三方弁２３を通って圧縮機１９に戻される。このとき、冷媒は、膨張弁２１及び蒸発器１３を流れない。また、二方弁２２は閉じている。即ち、暖房運転では、三方弁２３によって、冷媒は、膨張弁２１及び蒸発器１３をバイパスして、室外熱交換器７から圧縮機１９へと流される。 3, in the heating operation, the high-temperature refrigerant compressed by the compressor 19 dissipates heat in the condenser 14 and is condensed. At this time, the air mix door 16 is set at a solid line position, and the outside air sucked by the indoor intake fan (not shown) as shown by an arrow C passes through the evaporator 13 and the condenser 14, The conditioned air (warm air) is supplied from the first flow path 12a to the vehicle compartment 11. The refrigerant discharged from the condenser 14 passes through the expansion valve 20 and is heated by the outdoor heat exchanger 7, and is returned to the compressor 19 through the three-way valve 23. At this time, the refrigerant does not flow through the expansion valve 21 and the evaporator 13. The two-way valve 22 is closed. That is, in the heating operation, the three-way valve 23 causes the refrigerant to flow from the outdoor heat exchanger 7 to the compressor 19, bypassing the expansion valve 21 and the evaporator 13.
　暖房運転では、室外熱交換器７での熱交換時に、外気の水分によって室外熱交換器７が着氷（着霜）されることがある（特に、そのチューブ間で）。室外熱交換器７が着氷（着霜）された状態では熱交換効率が低下するので、室外熱交換器７にホットガスを流して除氷／霜運転が行なわれる。 In the heating operation, when heat is exchanged in the outdoor heat exchanger 7, the outdoor heat exchanger 7 may be iced (frosted) by moisture from the outside air (particularly, between the tubes). When the outdoor heat exchanger 7 is iced (frosted), the heat exchange efficiency is lowered. Therefore, the degassing / frosting operation is performed by flowing hot gas through the outdoor heat exchanger 7.
　除氷／霜運転では、圧縮機１９で圧縮された高温冷媒は、暖房運転と同様に凝縮器１４を流れるが、エアミックスドア１６は二点鎖線位置に設定されており、凝縮器１４での放熱が抑制される。このとき、室内の吸気ファンは作動されない。凝縮器１４から出た高温冷媒（ホッドガス）は、二方弁２２を通って室外熱交換器７に流入する。室外熱交換器７の内部を高温冷媒が流れるので、氷や霜が溶解される。室外熱交換器７から出た冷媒は三方弁２３を通って圧縮機１９に戻される。 In the deicing / frosting operation, the high-temperature refrigerant compressed by the compressor 19 flows through the condenser 14 as in the heating operation, but the air mix door 16 is set at a two-dot chain line position. Heat dissipation is suppressed. At this time, the indoor intake fan is not operated. The high-temperature refrigerant (hod gas) discharged from the condenser 14 flows into the outdoor heat exchanger 7 through the two-way valve 22. Since the high-temperature refrigerant flows inside the outdoor heat exchanger 7, ice and frost are melted. The refrigerant discharged from the outdoor heat exchanger 7 is returned to the compressor 19 through the three-way valve 23.
　除氷／霜運転によって氷や霜が溶けて生成される水Ｗは、図７に示されるように、室外熱交換器７を支持しているキャリア２７の下部２７ｂに流下し、さらにファンシュラウド３５に向けて流れる。 As shown in FIG. 7, the water W generated by melting ice and frost by the deicing / frosting operation flows down to the lower part 27 b of the carrier 27 supporting the outdoor heat exchanger 7, and further the fan shroud 35. It flows toward.
　このとき、ファンシュラウド３５の底壁３５ｃに排水口（切欠部３５ｄ及び凹部３５ｅ）が設けられているので、水Ｗは排水口から下方に排出される。従って、ファンシュラウド３５の底に水が溜まるのを抑制でき、溜まった水の凍結による室外ファン９の作動不良を防止できる。 At this time, since the drain port (notch 35d and recess 35e) is provided in the bottom wall 35c of the fan shroud 35, the water W is discharged downward from the drain port. Therefore, it is possible to suppress the accumulation of water at the bottom of the fan shroud 35, and it is possible to prevent malfunction of the outdoor fan 9 due to freezing of the accumulated water.
　特に、本実施形態では、排水口がファンシュラウド３５の筒状フランジ３５ａの底部３５ａ１の室外熱交換器７側に位置されているので、室外熱交換器７から流れてくる水Ｗを速やか且つ効果的に排水口から排出できる。 In particular, in this embodiment, since the drain outlet is located on the outdoor heat exchanger 7 side of the bottom 35a1 of the cylindrical flange 35a of the fan shroud 35, the water W flowing from the outdoor heat exchanger 7 can be quickly and effectively used. Can be discharged from the drain.
　また、本実施形態では、室外熱交換器７の少なくとも下部を覆い、且つ、ファンシュラウド３５を支持するキャリア（支持部材）２７が設けられている。さらに、ファンシュラウド３５の排水口（切欠部３５ｄ及び凹部３５ｅ）は、ファンシュラウド３５とキャリア２７との突き合わせ部に設けられている。このため、ファンシュラウド３５の底壁３５ｃのキャリア２７側の前方端３５ｃ１を切り欠くことで、排水口（切欠部３５ｄ及び凹部３５ｅ）を容易に形成することができる。 In this embodiment, a carrier (support member) 27 that covers at least the lower part of the outdoor heat exchanger 7 and supports the fan shroud 35 is provided. Further, the drainage opening (notch 35 d and recess 35 e) of the fan shroud 35 is provided at the abutting portion between the fan shroud 35 and the carrier 27. For this reason, by cutting out the front end 35c1 on the carrier 27 side of the bottom wall 35c of the fan shroud 35, the drain port (notch 35d and recess 35e) can be easily formed.
また、本実施形態では、筒状フランジ３５ａの底部３５ａ１はファンシュラウド３５の最下部に位置している。さらに、底部３５ａ１に形成された三つの凹部３５ｅのうちの中央の凹部３５ｅは、ファンシュラウド３５の最下端に位置する。従って、室外熱交換器７から流れてくる水Ｗは、最下端に位置する凹部３５ｅから確実に排出される。即ち、信頼性の高い排水構造が実現される。 In the present embodiment, the bottom portion 35 a 1 of the cylindrical flange 35 a is located at the lowermost portion of the fan shroud 35. Further, the central recess 35 e among the three recesses 35 e formed in the bottom 35 a 1 is located at the lowermost end of the fan shroud 35. Accordingly, the water W flowing from the outdoor heat exchanger 7 is reliably discharged from the recess 35e located at the lowermost end. That is, a highly reliable drainage structure is realized.
　また、本実施形態では、上述したように、鉛直線Ｔと直線Ａ又はＢとがなす角度θが、それぞれ少なくとも１５度となるように、排水口（切欠部３５ｄ及び凹部３５ｅ）が形成されている。通常走行時の車体のロール角は１５度を超えることはほとんどない。従って、上述した角度θを少なくとも１５度となるように排水口（切欠部３５ｄ及び凹部３５ｅ）を形成することで、車体ロール時でも排水口は鉛直方向下方に向けて開口される。その結果、車体の姿勢によらず、排水が確実に行われる。 In the present embodiment, as described above, the drain ports (notches 35d and recesses 35e) are formed so that the angle θ formed by the vertical line T and the straight line A or B is at least 15 degrees. Yes. The roll angle of the vehicle body during normal travel rarely exceeds 15 degrees. Therefore, by forming the drainage port (notch 35d and recess 35e) so that the above-described angle θ is at least 15 degrees, the drainage port is opened downward in the vertical direction even when the vehicle body is rolled. As a result, drainage is reliably performed regardless of the posture of the vehicle body.
　また、本実施形態では、排水口（切欠部３５ｄ及び凹部３５ｅ）は、車体のピッチング角が最大で１５度でも、室外ファン（送風機）９の鉛直方向下方に位置する。通常走行時の車体のピッチング角は１５を超えることはほとんどない。従って、車体ピッチング時でも、排水口（切欠部３５ｄ及び凹部３５ｅ）が室外ファン９の最下端９ａの直下に位置するので、水Ｗは排水口（切欠部３５ｄ及び凹部３５ｅ）から速やかに排出される。その結果、車体の姿勢によらず、排水が確実に行われる。特に、水Ｗが室外ファン９に付着して凍結すると室外ファン９は作動不良を起こしやすい。このため、室外ファン９に付着した水Ｗを速やかに排出することは、作動不良の防止に効果的である。 In this embodiment, the drain port (notch 35d and recess 35e) is located below the outdoor fan (blower) 9 in the vertical direction even when the pitching angle of the vehicle body is 15 degrees at the maximum. The pitching angle of the vehicle body during normal driving rarely exceeds 15. Therefore, even when the vehicle body is pitched, the drainage port (notch 35d and recess 35e) is located immediately below the lowermost end 9a of the outdoor fan 9, so that the water W is quickly discharged from the drainage port (notch 35d and recess 35e). The As a result, drainage is reliably performed regardless of the posture of the vehicle body. In particular, when the water W adheres to the outdoor fan 9 and freezes, the outdoor fan 9 tends to malfunction. Therefore, promptly discharging the water W adhering to the outdoor fan 9 is effective in preventing malfunction.
また、本実施形態では、室外熱交換器７は、暖房運転ではヒートポンプサイクルにおける蒸発器として機能する。このため、暖房運転で室外熱交換器７が着氷（着霜）された場合に除氷／霜運転を実施することで水が多量に発生しても、水を排水口から速やかに排出できる。 In the present embodiment, the outdoor heat exchanger 7 functions as an evaporator in a heat pump cycle in heating operation. For this reason, even if a large amount of water is generated by performing deicing / frosting operation when the outdoor heat exchanger 7 is icing (frosting) in the heating operation, water can be quickly discharged from the drain outlet. .
　なお、排水口は、室外熱交換器７に付着した氷や霜が除氷／霜運転によって溶かされた水だけを排水するのではなく、車両走行中にラジエータ５や室外熱交換器７に付着する雨なども排出する。 The drain outlet does not drain only the water in which ice or frost adhered to the outdoor heat exchanger 7 is melted by the deicing / frosting operation, but adheres to the radiator 5 or the outdoor heat exchanger 7 while the vehicle is running. It also drains rain.
　本実施形態の車両は電気自動車であったが、内燃機関を搭載した自動車であってもよい。この場合、排水口（切欠部３５ｄ及び凹部３５ｅ）からは、内燃機関冷却用のラジエータに付着した水も排水される。即ち、排水口（切欠部３５ｄ及び凹部３５ｅ）は、空調用の室外ファン（送風機）の前方に配置された熱交換器から流れてくる水がファンシュラウド３５の下部で凍結するのを防止して、室外ファンの作動不良を回避する。 Although the vehicle of this embodiment is an electric vehicle, it may be an automobile equipped with an internal combustion engine. In this case, the water adhering to the radiator for cooling the internal combustion engine is also drained from the drain port (notch 35d and recess 35e). That is, the drain port (notch 35d and recess 35e) prevents water flowing from the heat exchanger arranged in front of the air-conditioning outdoor fan (blower) from freezing below the fan shroud 35. , Avoid malfunction of outdoor fans.
　また、本実施形態では、室外ファン（送風機）９が、室外熱交換器７の後方に配置されているが、室外熱交換器７の前方に配置されて外気を室外熱交換器７に押し込んでもよい。即ち、送風機は、熱交換器の前方又は後方に配置される。 In the present embodiment, the outdoor fan (blower) 9 is disposed behind the outdoor heat exchanger 7. However, the outdoor fan (blower) 9 is disposed in front of the outdoor heat exchanger 7 and pushes the outside air into the outdoor heat exchanger 7. Good. That is, the blower is arranged in front of or behind the heat exchanger.
　日本国特許出願第２０１２－２０７８５４号（２０１２年９月２１日出願）の全ての内容は、ここに参照されることで本明細書に援用される。本発明の実施形態を参照することで上述のように本発明が説明されたが、本発明は上述した実施形態に限定されるものではない。本発明の範囲は、請求の範囲に照らして決定される。 The entire contents of Japanese Patent Application No. 2012-207854 (filed on Sep. 21, 2012) are incorporated herein by reference. Although the present invention has been described above with reference to embodiments of the present invention, the present invention is not limited to the above-described embodiments. The scope of the invention is determined in light of the claims.

Claims (6)

  1. 　車両用空気調和装置であって、
    　内部を流れる冷媒と外気との間で熱交換を行う熱交換器と、
    　前記熱交換器の前方又は後方に配置されて、前記熱交換器に前記外気を通過させる送風機と、
    　前記送風機の外周を囲う筒状フランジを有するシュラウドと、を備え、
    　前記熱交換器から流下する水を外部に排水する排水口が、前記筒状フランジの底部の前記熱交換器側に形成されている、車両用空気調和装置。     An air conditioner for a vehicle,
    A heat exchanger that exchanges heat between the refrigerant flowing inside and the outside air;
    A blower that is disposed in front of or behind the heat exchanger and allows the outside air to pass through the heat exchanger;
    A shroud having a cylindrical flange surrounding the outer periphery of the blower,
    A vehicle air conditioner in which a drain outlet for draining water flowing down from the heat exchanger to the outside is formed on the heat exchanger side of the bottom of the cylindrical flange.
  2. 　請求項１に記載の車両用空気調和装置であって、
    　前記シュラウドを支持すると共に、前記熱交換器の少なくとも下部を覆う支持部材をさらに備えており、
    　前記排水口が、前記シュラウドと前記支持部材との突合せ部に形成されている、車両用空気調和装置。     The vehicle air conditioner according to claim 1,
    A support member that supports the shroud and covers at least a lower portion of the heat exchanger;
    A vehicle air conditioner in which the drain outlet is formed at a butt portion between the shroud and the support member.
  3. 　請求項１又は２に記載の車両用空気調和装置であって、
    　前記筒状フランジの前記底部が、前記シュラウドの最下部に位置されている、車両用空気調和装置。     The vehicle air conditioner according to claim 1 or 2,
    The vehicle air conditioner, wherein the bottom portion of the cylindrical flange is positioned at a lowermost portion of the shroud.
  4. 　請求項１～３の何れか一項に記載の車両用空気調和装置であって、
    　前記筒状フランジの中心を通る鉛直線と、前記中心と前記筒状フランジ上の前記排水口の一側端及び他側端を通る二つの直線とがそれぞれなす角度が、少なくとも１５度となるように、前記排水口が形成されている、車両用空気調和装置。     The vehicle air conditioner according to any one of claims 1 to 3,
    An angle formed between a vertical line passing through the center of the cylindrical flange and two straight lines passing through the center and one side end and the other side end of the drain outlet on the cylindrical flange is at least 15 degrees. The air conditioner for vehicles in which the drain outlet is formed.
  5. 　請求項１～４の何れか一項に記載の車両用空気調和装置であって、
    　前記排水口が、ピッチング角が１５度の状態で前記送風機の鉛直方向下方に位置するよう形成されている、車両用空気調和装置。     The vehicle air conditioner according to any one of claims 1 to 4,
    The vehicle air conditioner, wherein the drain outlet is formed so as to be positioned vertically below the blower with a pitching angle of 15 degrees.
  6. 　請求項１～５の何れか一項に記載の車両用空気調和装置であって、
    　前記熱交換器が、暖房運転でヒートポンプサイクルにおける蒸発器として機能する、車両用空気調和装置。     The vehicle air conditioner according to any one of claims 1 to 5,
    A vehicle air conditioner in which the heat exchanger functions as an evaporator in a heat pump cycle in heating operation.
PCT/JP2013/071932 2012-09-21 2013-08-14 Air conditioning device for vehicle WO2014045767A1 (en)

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Publication number Priority date Publication date Assignee Title
JPH05116527A (en) * 1991-10-28 1993-05-14 Matsushita Electric Ind Co Ltd Vehicle air-conditioning system incorporating heat pump for cooling and heating
JP2003034130A (en) * 2001-07-24 2003-02-04 Hitachi Ltd Air conditioner for automobile
JP2003148834A (en) * 2001-11-12 2003-05-21 Denso Corp Refrigerant evaporator
JP2010260541A (en) * 2009-05-08 2010-11-18 Honda Motor Co Ltd Evaporator assembly for air conditioning system for vehicle, air conditioning system for vehicle, and hvac system for vehicle
JP2012116415A (en) * 2010-12-03 2012-06-21 Panasonic Corp Vehicle air conditioner

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