JP7090045B2 - Vehicle air conditioner - Google Patents

Vehicle air conditioner Download PDF

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JP7090045B2
JP7090045B2 JP2019039394A JP2019039394A JP7090045B2 JP 7090045 B2 JP7090045 B2 JP 7090045B2 JP 2019039394 A JP2019039394 A JP 2019039394A JP 2019039394 A JP2019039394 A JP 2019039394A JP 7090045 B2 JP7090045 B2 JP 7090045B2
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condensed water
receiving portion
cooler
air
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JP2020142576A5 (en
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智昭 田代
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Mahle International GmbH
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Description

本発明は、車両に搭載され、熱交換器によって温度調整のなされた空気を車室内へと送風して車室内の温度調整を行う車両用空調装置に関する。 The present invention relates to a vehicle air conditioner mounted on a vehicle and whose temperature is adjusted by a heat exchanger to be blown into the vehicle interior to adjust the temperature inside the vehicle interior.

従来から、車両に搭載される車両用空調装置は、空調ケース内に設けられた冷却器により冷却された冷風と加熱器により加熱した温風とを混合した後、車室内へと送風している。また、空調ケース内において、空気に含まれる水分が冷却器に触れることで冷却されて凝縮水が発生し、この凝縮水は、重力作用下に冷却器に沿って下方へと落下した後に、該冷却器の下方となる空調ケースに開口した排水口を通じて外部へと排水される。 Conventionally, a vehicle air conditioner mounted on a vehicle mixes cold air cooled by a cooler provided in the air conditioning case and hot air heated by a heater, and then blows air into the vehicle interior. .. Further, in the air-conditioning case, the moisture contained in the air is cooled by touching the cooler to generate condensed water, and the condensed water drops downward along the cooler under the action of gravity, and then the condensed water is generated. It is drained to the outside through the drain port opened in the air conditioning case below the cooler.

一般的に、上述したような車両用空調装置における凝縮水の排水構造は、冷却器に対する送風方向の下流側に設けられており、送風によって冷却器に付着した凝縮水が下流側へと移動した後に、該冷却器の下流側に配置された排水構造へと落下して排水口から排水されるものである。 Generally, the drainage structure of the condensed water in the vehicle air conditioner as described above is provided on the downstream side in the air blowing direction with respect to the cooler, and the condensed water adhering to the cooler is moved to the downstream side by the blowing air. Later, it falls into a drainage structure arranged on the downstream side of the cooler and is drained from the drainage port.

しかしながら、車両用空調装置の搭載される車両の車体構造や空調ケースの構造等の理由で、排水構造を冷却器の下流側に配置することが難しい場合がある。例えば、冷却器の上流側に開口するように排水口を配置した場合には、前記冷却器に対する送風方向と排水口へ向かう凝縮水の排水方向とが対向する形となってしまい、凝縮水を円滑に排水口へと導いて排水できないという問題が生じてしまう。 However, it may be difficult to arrange the drainage structure on the downstream side of the cooler because of the vehicle body structure of the vehicle on which the vehicle air conditioner is mounted, the structure of the air conditioner case, or the like. For example, when the drainage port is arranged so as to open on the upstream side of the cooler, the direction of blowing air to the cooler and the drainage direction of the condensed water toward the drainage port are opposed to each other, so that the condensed water is discharged. There is a problem that it cannot be drained smoothly by leading to the drainage port.

そこで、上記の課題を解決するために、例えば、特許文献1に開示された車両用空調装置では、冷却器の下部に臨み、且つ、該冷却器よりも上流側となるケースの底面部において、前記冷却器を通過する空気の送風方向と直交方向に延びる複数の板状ガイド部材を設け、且つ、隣接する2つの板状ガイド部材の間に隙間を設ける構成としている。 Therefore, in order to solve the above problems, for example, in the vehicle air conditioner disclosed in Patent Document 1, in the bottom portion of the case facing the lower part of the cooler and upstream of the cooler. A plurality of plate-shaped guide members extending in a direction orthogonal to the blowing direction of the air passing through the cooler are provided, and a gap is provided between two adjacent plate-shaped guide members.

これにより、ケースの底面部において、凝縮水が上流側の排水口に向かって流れる際、複数の板状ガイド部材によって下流側への送風の一部が遮られ、この送風によって凝縮水が下流側へと移動してしまうことが抑制されるため、隙間を通じて凝縮水が上流側へと流れることで排出口から外部へと排出される。 As a result, when the condensed water flows toward the drain port on the upstream side at the bottom surface of the case, a part of the blown air to the downstream side is blocked by the plurality of plate-shaped guide members, and the condensed water is moved to the downstream side by this blown air. Since the movement to the water is suppressed, the condensed water flows to the upstream side through the gap and is discharged to the outside from the discharge port.

特開平11-291749号公報Japanese Unexamined Patent Publication No. 11-291749

上述したような車両用空調装置において、送風機からの送風が冷却器に対する送風方向と直交する空調ケースの側方から供給されるものがあり、その送風方向が冷却器の上流側と下流側とで約90°曲がるように偏向されて流通している。そのため、上述したような冷却器を通過する空気の送風方向に対して直交方向に延在する複数の板状ガイド部材を設けただけでは、空調ケースの側方から供給される送風によって凝縮水の流れが妨げられ、排水口から円滑に排出することが難しいという問題がある。 In some vehicle air conditioners as described above, the air blown from the blower is supplied from the side of the air conditioner case orthogonal to the air blow direction to the cooler, and the air blow direction is on the upstream side and the downstream side of the cooler. It is distributed with a deflection so that it bends about 90 °. Therefore, simply by providing a plurality of plate-shaped guide members extending in the direction orthogonal to the blowing direction of the air passing through the cooler as described above, the condensed water is blown from the side of the air conditioning case. There is a problem that the flow is obstructed and it is difficult to drain smoothly from the drain port.

本発明は、前記の課題を考慮してなされたものであり、冷却器の上流側に排水口が開口し、ケース内において送風方向が偏向する構成であっても、凝縮水を円滑に外部へと排出することが可能な車両用空調装置を提供することを目的とする。 The present invention has been made in consideration of the above-mentioned problems, and even if the drainage port is opened on the upstream side of the cooler and the blowing direction is deflected in the case, the condensed water can be smoothly discharged to the outside. It is an object of the present invention to provide an air conditioner for vehicles capable of discharging.

前記の目的を達成するために、本発明の態様は、送風機と、内部に形成された空気流路に冷却器の配置されるケースとを備え、ケースにおいて、送風機からの送風が冷却器の上流側通風面に対して略平行な第1の送風方向で導入され、冷却器の上流側において上流側通風面に対して直交するように第1の送風方向から第2の送風方向へと偏向されて冷却器側へと供給される車両用空調装置において、
ケースには、冷却器の重力方向下方において、冷却器に対する第2の送風方向の下流側から上流側に向けて重力方向下方へと傾斜した第1凝縮水受部と、
冷却器の上流側となる空気流路の底壁を構成し、第1凝縮水受部に対して第2の送風方向の上流側に隣接し、且つ、底壁が第1凝縮水受部よりも重力方向下方に形成されると共に、底壁において最も重力方向下方となる位置に外部と連通した排水口を有した第2凝縮水受部と、
第1凝縮水受部と第2凝縮水受部との境界に設けられ、第1の送風方向に沿って延在して冷却器に当接することで第1凝縮水受部と第2凝縮水受部とを区画する区画壁と、
を備え、
第1の送風方向に沿った区画壁の両側には、第1凝縮水受部と第2凝縮水受部とを連通する連通部をそれぞれ備え、第1の送風方向において奥側となる一方の連通部の幅寸法が、第1の送風方向において手前側となる他方の連通部の幅寸法よりも大きく形成される。
In order to achieve the above object, an embodiment of the present invention comprises a blower and a case in which a cooler is arranged in an air flow path formed inside, in which case air blown from the blower is upstream of the cooler. It is introduced in the first ventilation direction substantially parallel to the side ventilation surface, and is deflected from the first ventilation direction to the second ventilation direction so as to be orthogonal to the upstream ventilation surface on the upstream side of the cooler. In the vehicle air conditioner supplied to the cooler side
The case has a first condensed water receiving part that is inclined downward in the direction of gravity from the downstream side in the second blowing direction to the cooler toward the upstream side in the direction of gravity of the cooler.
It constitutes the bottom wall of the air flow path on the upstream side of the cooler, is adjacent to the upstream side in the second blowing direction with respect to the first condensed water receiving portion, and the bottom wall is from the first condensed water receiving portion. A second condensed water receiving part that is formed downward in the direction of gravity and has a drainage port that communicates with the outside at the position that is the lowest in the direction of gravity on the bottom wall.
The first condensed water receiving part and the second condensed water are provided at the boundary between the first condensed water receiving part and the second condensed water receiving part, and extend along the first blowing direction and come into contact with the cooler. The partition wall that separates the receiving part and
Equipped with
On both sides of the partition wall along the first ventilation direction, communication portions for communicating the first condensed water receiving portion and the second condensed water receiving portion are provided, respectively, and one of them is on the inner side in the first blowing direction. The width dimension of the communication portion is formed to be larger than the width dimension of the other communication portion on the front side in the first blowing direction.

本発明によれば、冷却器の配置されるケースにおいて、冷却器の重力方向下方には、冷却器に対する送風方向の下流側から上流側に向けて重力方向下方へと傾斜した第1凝縮水受部と、第1凝縮水受部に対して第2の送風方向の上流側に隣接し、且つ、底壁が重力方向下方に形成された第2凝縮水受部とを備え、第2凝縮水受部の最も重力方向下方となる位置に外部と連通した排水口が形成されている。 According to the present invention, in the case where the cooler is arranged, the first condensed water receiver inclined downward in the gravity direction from the downstream side in the air blowing direction to the cooler to the upstream side in the lower part in the gravity direction of the cooler. A second condensed water receiving portion is provided with a portion and a second condensed water receiving portion adjacent to the upstream side in the second blowing direction with respect to the first condensed water receiving portion and having a bottom wall formed downward in the gravity direction. A drainage port that communicates with the outside is formed at the position that is the lowest in the direction of gravity of the receiving portion.

また、第1凝縮水受部と第2凝縮水受部とを区画する区画壁には、冷却器の上流側通風面に対して略平行に導入される第1の送風方向に沿った両側に第1凝縮水受部と第2凝縮水受部とを連通する連通部がそれぞれ設けられ、第1の送風方向において奥側となる一方の連通部の幅寸法が、第1の送風方向において手前側となる他方の連通部の幅寸法よりも大きく形成されている。 Further, on the partition wall that separates the first condensed water receiving portion and the second condensed water receiving portion, both sides along the first blowing direction introduced substantially parallel to the upstream ventilation surface of the cooler. A communication section for communicating the first condensed water receiving section and the second condensed water receiving section is provided, and the width dimension of one of the communicating sections on the back side in the first blowing direction is the front in the first blowing direction. It is formed larger than the width dimension of the other communicating portion on the side.

従って、第1の送風方向に沿って送風機からケース内へと空気が導入された際、圧力のより高まりやすい送風方向の奥側に設けられた他方の連通部の幅寸法を大きく形成しているため、第2凝縮水受部側から第1凝縮水受部側へと空気を流通させやすい。そのため、第1凝縮水受部へと導入された送風によって凝縮水を第1の送風方向において奥側から手前側へと押し流すことで、手前側に設けられた一方の連通部を通じて第1凝縮水受部から第2凝縮水受部へと凝縮水を円滑に流して排水口から外部へと確実に排出することができる。 Therefore, when air is introduced from the blower into the case along the first blowing direction, the width dimension of the other communicating portion provided on the inner side of the blowing direction in which the pressure is more likely to increase is formed large. Therefore, it is easy to flow air from the second condensed water receiving portion side to the first condensed water receiving portion side. Therefore, by blowing the condensed water from the back side to the front side in the first blowing direction by the blowing air introduced into the first condensed water receiving part, the first condensed water is passed through one of the communication parts provided on the front side. Condensed water can be smoothly flowed from the receiving portion to the second condensed water receiving portion, and can be reliably discharged to the outside from the drain port.

その結果、例えば、車両レイアウトやケースの構造上の制約等の理由から凝縮水を排出するための排水口が冷却器の上流側に開口し、且つ、ケース内における送風方向が冷却器に沿った第1の送風方向から冷却器側に向かう第2の送風方向へと偏向される場合であっても、上記の構成を採用することで凝縮水を下流側から上流側へと円滑に流してケースの外部へと排出することができる。 As a result, for example, a drain port for discharging condensed water opens on the upstream side of the cooler due to reasons such as vehicle layout and structural restrictions of the case, and the blowing direction in the case is along the cooler. Even when the water is deflected from the first air blowing direction to the second air blowing direction toward the cooler side, by adopting the above configuration, the condensed water can be smoothly flowed from the downstream side to the upstream side. Can be discharged to the outside of.

本発明によれば、以下の効果が得られる。 According to the present invention, the following effects can be obtained.

すなわち、送風機から第1の送風方向にケース内へと空気が導入された際、第1凝縮水受部と第2凝縮水受部との間に設けられた区画壁において、送風方向の奥側となり圧力の高まりやすい他方の連通部が手前側に設けられた一方の連通部に対して幅寸法が大きく形成されているため、他方の連通部を通じて第2凝縮水受部から第1凝縮水受部側へと空気を流通させやすくなる。 That is, when air is introduced into the case from the blower in the first blowing direction, the inner side in the blowing direction is provided in the partition wall provided between the first condensed water receiving portion and the second condensed water receiving portion. Since the other communicating portion where the pressure tends to increase is formed to have a larger width than that of the one communicating portion provided on the front side, the second condensed water receiving portion to the first condensed water receiving portion are formed through the other communicating portion. It becomes easier to distribute air to the part side.

そのため、第1の送風方向の奥側において第1凝縮水受部へと導入された送風によって凝縮水を第1凝縮水受部において送風方向の奥側から手前側へと押し流し、一方の連通部を通じて第1凝縮水受部から第2凝縮水受部へと円滑に凝縮水を流すことが可能となる。 Therefore, the condensed water is pushed from the back side in the blowing direction to the front side in the first condensed water receiving part by the blowing air introduced into the first condensed water receiving part on the back side in the first blowing direction, and one of the communication parts is connected. Through this, the condensed water can be smoothly flowed from the first condensed water receiving portion to the second condensed water receiving portion.

その結果、例えば、車両レイアウトやケースの構造上の制約等の理由から凝縮水を排出するための排水口が冷却器の上流側に開口し、且つ、ケース内における送風方向が冷却器に沿った第1の送風方向から冷却器側に向かう第2の送風方向へと偏向される場合であっても、上記の構成を採用することで凝縮水を下流側から上流側へと円滑に流してケースの外部へと排出することができる。 As a result, for example, a drain port for discharging condensed water opens on the upstream side of the cooler due to reasons such as vehicle layout and structural restrictions of the case, and the blowing direction in the case is along the cooler. Even when the water is deflected from the first air blowing direction to the second air blowing direction toward the cooler side, by adopting the above configuration, the condensed water can be smoothly flowed from the downstream side to the upstream side. Can be discharged to the outside of.

本発明の実施の形態に係る車両用空調装置の全体断面図である。It is an overall sectional view of the air conditioner for vehicles which concerns on embodiment of this invention. 図1に示す車両用空調装置の概略平面図である。FIG. 3 is a schematic plan view of the vehicle air conditioner shown in FIG. 1. 図1の車両用空調装置におけるロアケースを示す平面図である。It is a top view which shows the lower case in the air conditioner for a vehicle of FIG. 図3に示すロアケースの一部断面斜視図である。It is a partial cross-sectional perspective view of the lower case shown in FIG.

本発明に係る車両用空調装置について好適な実施の形態を挙げ、添付の図面を参照しながら以下詳細に説明する。図1において、参照符号10は、本発明の実施の形態に係る車両用空調装置を示す。 A preferred embodiment of the vehicle air conditioner according to the present invention will be described in detail below with reference to the accompanying drawings. In FIG. 1, reference numeral 10 indicates a vehicle air conditioner according to an embodiment of the present invention.

この車両用空調装置10は、図1及び図2に示されるように、空気の各通路12を内部に有した空調ケース(ケース)14と、該空調ケース14の内部に配設され空気を冷却するエバポレータ(冷却器)16と、前記空気を加熱するヒータコア18と、前記エバポレータ16及びヒータコア18によって温度調整された冷風及び温風の送風状態を切り替えるドア機構20とを含む。 As shown in FIGS. 1 and 2, the vehicle air conditioner 10 has an air conditioner case (case) 14 having air passages 12 inside, and is arranged inside the air conditioner case 14 to cool air. It includes an evaporator (cooler) 16 for heating, a heater core 18 for heating the air, and a door mechanism 20 for switching the blowing state of cold air and hot air whose temperature is adjusted by the evaporator 16 and the heater core 18.

この空調ケース14は、幅方向(図2中、矢印A1、A2方向)に分割可能な第1及び第2分割ケース22、24と、該第1及び第2分割ケース22、24の下部に接続されるロアケース26とからなり、前記第1及び第2分割ケース22、24の上方(矢印B1方向)には、例えば、乗員の顔近傍に送風を行うベント送風口28と、該ベント送風口28と隣接し車両のフロントウィンドウ近傍に送風を行うデフロスタ送風口30とが開口している。また、空調ケース14の車両後方側(矢印C1方向)には、下方に沿って延在するヒート通路32の下端に乗員の足元近傍に送風を行うヒート送風口34が開口している。 The air conditioning case 14 is connected to the first and second divided cases 22 and 24 that can be divided in the width direction (arrows A1 and A2 in FIG. 2) and the lower portions of the first and second divided cases 22 and 24. Above the first and second split cases 22 and 24 (in the direction of arrow B1), for example, a vent blower port 28 for blowing air near the occupant's face and the vent blower port 28 are formed of the lower case 26. A defroster air outlet 30 that blows air is open in the vicinity of the front window of the vehicle adjacent to the air. Further, on the rear side of the vehicle (in the direction of arrow C1) of the air conditioning case 14, a heat ventilation port 34 for blowing air near the feet of the occupant is opened at the lower end of the heat passage 32 extending along the lower side.

また、第1分割ケース22の幅方向一端側(図2中、矢印A1方向)となる側部には、内部に送風ファン38を有した送風機ユニット40が設けられている。送風機ユニット40は、第1分割ケース22における幅方向一端側でエバポレータ16の上流側(矢印C2方向)に開口した供給孔36へと接続され、該送風機ユニット40で取り込まれた空気が、送風ファン38の回転作用下に供給孔36を通じて空調ケース14内へと供給される。 Further, a blower unit 40 having a blower fan 38 inside is provided on a side portion of the first split case 22 on one end side in the width direction (in the direction of arrow A1 in FIG. 2). The blower unit 40 is connected to a supply hole 36 opened on the upstream side (arrow C2 direction) of the evaporator 16 at one end side in the width direction in the first split case 22, and the air taken in by the blower unit 40 is blown by a blower fan. It is supplied into the air conditioning case 14 through the supply hole 36 under the rotational action of 38.

この際、送風機ユニット40から空調ケース14への送風は、エバポレータ16の上流側通風面16aに沿って幅方向(図2中、矢印A2方向、第1の送風方向F1)に送風される。また、供給孔36は、第1分割ケース22からロアケース26に跨るように上下方向(矢印B1、B2方向)に開口している(図1参照)。 At this time, the air blown from the blower unit 40 to the air conditioning case 14 is blown in the width direction (in FIG. 2, the arrow A2 direction, the first air blowing direction F1) along the upstream ventilation surface 16a of the evaporator 16. Further, the supply hole 36 is opened in the vertical direction (arrows B1 and B2 directions) so as to straddle the lower case 26 from the first divided case 22 (see FIG. 1).

そして、空調ケース14の内部において、車両前方側(矢印C2方向)にエバポレータ16が配置され、該エバポレータ16に対して車両後方側(矢印C1方向)に所定距離離れてヒータコア18が配置されると共に、供給孔36から供給された空気の送風方向は、前記エバポレータ16の上流側通風面16aに臨む位置で車両後方側(図2中、矢印C1方向、第2の送風方向F2)に向かうように略直角に偏向され、該エバポレータ16へと供給される。すなわち、この空調ケース14内において、車両前方側が上流側、車両後方側が下流側となるように空気が送風される。 Then, inside the air conditioning case 14, the evaporator 16 is arranged on the front side of the vehicle (direction of arrow C2), and the heater core 18 is arranged on the rear side of the vehicle (direction of arrow C1) with respect to the evaporator 16 at a predetermined distance. The air blowing direction of the air supplied from the supply hole 36 is toward the rear side of the vehicle (in FIG. 2, arrow C1 direction, second blowing direction F2) at a position facing the upstream side ventilation surface 16a of the evaporator 16. It is deflected at a substantially right angle and supplied to the evaporator 16. That is, in the air conditioning case 14, air is blown so that the front side of the vehicle is the upstream side and the rear side of the vehicle is the downstream side.

ロアケース26は、図1~図4に示されるように、例えば、有底状に形成され第1及び第2分割ケース22、24に跨るように幅方向(図2中、矢印A1、A2方向)に沿って設けられ、前記第1分割ケース22の幅方向側壁から前記第2分割ケース24の幅方向側壁まで延在して前記第1及び第2分割ケース22、24の開口した下端部を覆うと共に、エバポレータ16の下端に臨むように設けられている。 As shown in FIGS. 1 to 4, the lower case 26 is formed in a bottomed shape, for example, and has a width direction (in FIG. 2, arrows A1 and A2 directions) so as to straddle the first and second divided cases 22 and 24. It extends from the widthwise side wall of the first divided case 22 to the widthwise side wall of the second divided case 24 and covers the open lower ends of the first and second divided cases 22 and 24. At the same time, it is provided so as to face the lower end of the evaporator 16.

このロアケース26は、図1、図2及び図3に示されるように、エバポレータ16の下流側通風面16bに臨むように設けられた第1ドレン受部(第1凝縮水受部)42と、該第1ドレン受部42に隣接して上流側(矢印C2方向)に設けられた第2ドレン受部(第2凝縮水受部)44と、前記第1ドレン受部42と前記第2ドレン受部44との間に設けられた区画壁46と、前記第2ドレン受部44の最も重力方向下端に設けられたドレン排出口(排水口)48とを備える。 As shown in FIGS. 1, 2, and 3, the lower case 26 includes a first drain receiving portion (first condensed water receiving portion) 42 provided so as to face the downstream ventilation surface 16b of the evaporator 16. A second drain receiving portion (second condensed water receiving portion) 44 provided on the upstream side (arrow C2 direction) adjacent to the first drain receiving portion 42, the first drain receiving portion 42, and the second drain. A partition wall 46 provided between the receiving portion 44 and a drain discharge port (drainage port) 48 provided at the lowermost end in the gravity direction of the second drain receiving portion 44 is provided.

第1ドレン受部42は、エバポレータ16を通過する空気の送風方向F2において下流側から上流側(矢印C2方向)に向かって底壁50が徐々に重力方向下方(矢印B2方向)へと向かうように傾斜して形成され、幅方向(矢印A1、A2方向)に沿って略同一断面形状で形成される。第1ドレン受部42の下流側端部は、エバポレータ16とヒータコア18との間に配置され、該エバポレータ16の下流側通風面16bに臨むように配置され、一方、上流側端部はエバポレータ16の下端に臨み区画壁46が幅方向に沿って設けられている。 In the first drain receiving portion 42, the bottom wall 50 gradually moves downward in the gravity direction (arrow B2 direction) from the downstream side to the upstream side (arrow C2 direction) in the air blowing direction F2 of the air passing through the evaporator 16. It is formed so as to be inclined to, and has substantially the same cross-sectional shape along the width direction (arrows A1 and A2 directions). The downstream end of the first drain receiving portion 42 is arranged between the evaporator 16 and the heater core 18 so as to face the downstream ventilation surface 16b of the evaporator 16, while the upstream end is the evaporator 16. A partition wall 46 facing the lower end of the wall is provided along the width direction.

また、第1ドレン受部42には、その底壁50から上方に向かって立設した複数の第1遮蔽壁(第1遮蔽部材)52が形成され、該第1遮蔽壁52は板状で幅方向に沿って互いに離間するように設けられ、幅方向外側に設けられた一対の長片部54と、一方の長片部54と他方の長片部54との間となる幅方向中央に設けられた一対の第1短片部56と、該第1短片部56に対して下流側(矢印C1方向)に離間して配置された第2短片部58とからなる。 Further, a plurality of first shielding walls (first shielding members) 52 erected upward from the bottom wall 50 are formed in the first drain receiving portion 42, and the first shielding wall 52 is plate-shaped. A pair of long piece portions 54 provided so as to be separated from each other along the width direction and provided on the outer side in the width direction, and in the center of the width direction between one long piece portion 54 and the other long piece portion 54. It is composed of a pair of first short piece portions 56 provided and a second short piece portion 58 arranged apart from the first short piece portion 56 on the downstream side (direction of arrow C1).

第1遮蔽壁52は、例えば、一対の長片部54と一対の第1短片部56とが一直線状に形成され、第2短片部58が前記第1短片部56に対して下流側にオフセットした位置で、互いに幅方向に離間した一方の第1短片部56と他方の第1短片部56との間となるように配置されている。なお、長片部54、第1及び第2短片部58は、例えば、底壁50に対して略同一高さで形成される。 In the first shielding wall 52, for example, a pair of long piece portions 54 and a pair of first short piece portions 56 are formed in a straight line, and the second short piece portion 58 is offset downstream with respect to the first short piece portion 56. At this position, they are arranged so as to be between one of the first short piece portions 56 and the other first short piece portion 56 which are separated from each other in the width direction. The long piece portion 54 and the first and second short piece portions 58 are formed at substantially the same height with respect to the bottom wall 50, for example.

そして、第1遮蔽壁52を構成する長片部54、第1及び第2短片部56、58の間が、底壁50に沿って第2ドレン受部44へと凝縮水がそれぞれ流れる際の流路となる。 Then, when the condensed water flows between the long piece portion 54, the first and second short piece portions 56, 58 constituting the first shielding wall 52, and into the second drain receiving portion 44 along the bottom wall 50, respectively. It becomes a flow path.

なお、第1遮蔽壁52は、上述したような一対の長片部54と第1短片部56、第2短片部58とから構成される場合に限定されるものではなく、幅方向に沿って設けられる複数の壁部から構成されていれば、その数量や配置は適宜設定すればよい。 The first shielding wall 52 is not limited to the case where it is composed of the pair of long piece portions 54, the first short piece portion 56, and the second short piece portion 58 as described above, and is not limited to the case where the first shielding wall 52 is composed of the pair of long piece portions 54 and the second short piece portion 58. If it is composed of a plurality of wall portions to be provided, the quantity and arrangement thereof may be appropriately set.

第2ドレン受部44は、第1ドレン受部42に対してさらに重力方向下方(矢印B2方向)へと深く窪んで形成され、その底壁60は、第2分割ケース24側となる幅方向他方側(矢印A2方向)が最も高く、第1分割ケース22側となる幅方向一方側(矢印A1方向)に向かって徐々に低くなるように傾斜して形成されている。すなわち、底壁60は、幅方向一端側が最も重力方向下方となるように低く形成されている。 The second drain receiving portion 44 is formed by being further recessed downward in the gravity direction (arrow B2 direction) with respect to the first drain receiving portion 42, and the bottom wall 60 thereof is formed in the width direction on the second split case 24 side. The other side (arrow A2 direction) is the highest, and the first split case 22 side is formed so as to be inclined so as to be gradually lowered toward one side in the width direction (arrow A1 direction). That is, the bottom wall 60 is formed low so that one end side in the width direction is the lowermost in the gravity direction.

そして、第2ドレン受部44は、底壁60の幅方向一端が幅方向に開口して供給孔36の一部を構成し、該底壁60の幅方向他端が幅方向に塞がれている。 Then, in the second drain receiving portion 44, one end in the width direction of the bottom wall 60 is opened in the width direction to form a part of the supply hole 36, and the other end in the width direction of the bottom wall 60 is closed in the width direction. ing.

また、第2ドレン受部44の底壁60には、さらに重力方向下方(矢印B2方向)へと突出したドレン排出口48が形成され、該ドレン排出口48は、前記底壁60の幅方向一端側(矢印A1方向)に接続され、該底壁60に対して下方へと延在した後に、上流側(矢印C2方向)に向かうように折曲した断面L字状に形成されている。 Further, a drain discharge port 48 projecting further downward in the direction of gravity (arrow B2 direction) is formed on the bottom wall 60 of the second drain receiving portion 44, and the drain discharge port 48 is in the width direction of the bottom wall 60. It is connected to one end side (direction of arrow A1), extends downward with respect to the bottom wall 60, and is formed in an L-shaped cross section bent toward the upstream side (direction of arrow C2).

そして、ドレン排出口48の先端は開口し、ロアケース26において第1ドレン受部42から第2ドレン受部44へと流れた凝縮水が該ドレン排出口48を通じて外部へと排出される。すなわち、ドレン排出口48は、第2ドレン受部44の底壁60において最も低くなる位置に設けられている。 Then, the tip of the drain discharge port 48 is opened, and the condensed water flowing from the first drain receiving portion 42 to the second drain receiving portion 44 in the lower case 26 is discharged to the outside through the drain discharge port 48. That is, the drain discharge port 48 is provided at the lowest position on the bottom wall 60 of the second drain receiving portion 44.

区画壁46は、板状に形成され幅方向(矢印A1、A2方向)に沿って一直線状に形成され、第1ドレン受部42と第2ドレン受部44とを空気の送風方向F2(矢印C1、C2方向)に分離し、一対の長片部54に臨む部位に上下方向に切り欠かれた一対の第1及び第2切欠部(連通部)62、64を有している。 The partition wall 46 is formed in a plate shape and is formed in a straight line along the width direction (arrows A1 and A2 directions), and the first drain receiving portion 42 and the second drain receiving portion 44 are connected to each other in the air blowing direction F2 (arrows). It is separated into C1 and C2 directions), and has a pair of first and second notched portions (communication portions) 62 and 64 notched in the vertical direction at a portion facing the pair of long piece portions 54.

第1切欠部62が、第1分割ケース22側(矢印A1方向)となる区画壁46の幅方向一端側に設けられ、第2切欠部64が、第2分割ケース24側(矢印A2方向)となる区画壁46の幅方向他端側に設けられる。図3に示されるように、第2切欠部64の幅寸法t2は、第1切欠部62の幅寸法t1に対して大きく形成される(t2>t1)。 The first notch 62 is provided on one end side in the width direction of the partition wall 46 which is the first division case 22 side (arrow A1 direction), and the second notch 64 is on the second division case 24 side (arrow A2 direction). It is provided on the other end side in the width direction of the partition wall 46. As shown in FIG. 3, the width dimension t2 of the second notch portion 64 is formed larger than the width dimension t1 of the first notch portion 62 (t2> t1).

また、区画壁46における第1及び第2切欠部62、64に臨むように、第1ドレン受部42から第2ドレン受部44にわたって第1及び第2連通凹部66、68が形成される。第1及び第2連通凹部66、68は、例えば、断面円弧状で第1ドレン受部42の底壁50に対してさらに下方へと窪むように形成されると共に、第1及び第2切欠部62、64の下端と同一の深さで形成される。

Further, the first and second communication recesses 66 and 68 are formed from the first drain receiving portion 42 to the second drain receiving portion 44 so as to face the first and second notches 62 and 64 in the partition wall 46. The first and second communication recesses 66 and 68 are formed, for example, in an arcuate cross section so as to be further downwardly recessed with respect to the bottom wall 50 of the first drain receiving portion 42, and the first and second notch portions 62 are formed. , 64 is formed at the same depth as the lower end.

また、第1及び第2連通凹部66、68は略同一の幅寸法で形成され、該第2連通凹部68と第2切欠部64とも略同一の幅寸法で形成されると共に、第1連通凹部66に対して第1切欠部62の幅寸法が小さく形成されている。 Further, the first and second communication recesses 66 and 68 are formed with substantially the same width dimension, and the second communication recess 68 and the second notch 64 are also formed with substantially the same width dimension, and the first communication recess is formed. The width dimension of the first notch 62 is formed smaller than that of 66.

そして、第1及び第2連通凹部66、68は、区画壁46に形成された第1及び第2切欠部62、64を介して第1ドレン受部42と第2ドレン受部44とを連通させている。 The first and second communication recesses 66 and 68 communicate the first drain receiving portion 42 and the second drain receiving portion 44 via the first and second notch portions 62 and 64 formed in the partition wall 46. I'm letting you.

さらに、区画壁46には、第1切欠部62に対してさらに幅方向一端側(矢印A1方向)となる位置に第2遮蔽壁(第2遮蔽部材)70が設けられる。この第2遮蔽壁70は、区画壁46に対して上流側(矢印C2方向)に向かって略直交するように所定高さだけ突出し、且つ、前記区画壁46の上端から第2ドレン受部44の底壁60に対して所定距離だけ上方となる位置まで上下方向(矢印B1、B2方向)に延在している。そして、第2遮蔽壁70の下端と底壁60との間には間隙72が設けられている。 Further, the partition wall 46 is provided with a second shielding wall (second shielding member) 70 at a position further on one end side (arrow A1 direction) in the width direction with respect to the first notch 62. The second shielding wall 70 projects by a predetermined height so as to be substantially orthogonal to the partition wall 46 toward the upstream side (direction of arrow C2), and the second drain receiving portion 44 is provided from the upper end of the partition wall 46. It extends in the vertical direction (arrows B1 and B2 directions) to a position above the bottom wall 60 by a predetermined distance. A gap 72 is provided between the lower end of the second shielding wall 70 and the bottom wall 60.

これにより、第2遮蔽壁70は、幅方向一端に開口した供給孔36から送風方向F1で第2ドレン受部44へと導入された空気が第1切欠部62へと直接送風されることを防止し、該第1切欠部62を通じて第1ドレン受部42から第2ドレン受部44へと流れる凝縮水の流れを妨げることがないように設けられる。 As a result, the second shielding wall 70 prevents the air introduced into the second drain receiving portion 44 in the blowing direction F1 from the supply hole 36 opened at one end in the width direction to be directly blown to the first notch 62. It is provided so as not to obstruct the flow of condensed water flowing from the first drain receiving portion 42 to the second drain receiving portion 44 through the first notch 62.

ドア機構20は、図1に示されるように、例えば、エバポレータ16とヒータコア18との間に設けられ冷風と温風との混合割合を調整するエアミックスドア74と、ベント送風口28から車室内への送風状態を調整するベント切替ドア76と、デフロスタ送風口30からフロントウィンドウへの送風状態を切り替えるデフロスタ切替ドア78と、ヒート通路32の開口部を開閉するヒート切替ドア80とを備える。 As shown in FIG. 1, the door mechanism 20 is provided between the evaporator 16 and the heater core 18, for example, an air mix door 74 for adjusting the mixing ratio of cold air and hot air, and a vent air outlet 28 to enter the vehicle interior. It is provided with a vent switching door 76 for adjusting the air blowing state to the air, a defroster switching door 78 for switching the air blowing state from the defroster air outlet 30 to the front window, and a heat switching door 80 for opening and closing the opening of the heat passage 32.

エアミックスドア74は、例えば、大きな半径で湾曲した断面円弧状の板状に形成され、上下方向に沿ってスライド自在に設けられると共に、エバポレータ16に臨む内周面に沿って設けられたラックギア82に対し、空調ケース14の第1及び第2分割ケース22、24に軸支されたシャフト84のピニオンギア86が噛合される。 The air mix door 74 is formed, for example, in the shape of a plate having an arcuate cross section curved with a large radius, is slidably provided in the vertical direction, and is provided along the inner peripheral surface facing the evaporator 16. On the other hand, the pinion gear 86 of the shaft 84 pivotally supported by the first and second split cases 22 and 24 of the air conditioning case 14 is engaged.

そして、図示しないアクチュエータの駆動作用下にシャフト84が回転することで、エアミックスドア74が上下方向にスライドし、ヒータコア18に臨む位置から該ヒータコア18に対して上方(矢印B1方向)に離間した位置まで移動する。 Then, as the shaft 84 rotates under the driving action of an actuator (not shown), the air mix door 74 slides in the vertical direction and is separated upward (in the direction of arrow B1) from the position facing the heater core 18. Move to the position.

また、ベント切替ドア76はベント送風口28に臨む位置に設けられ、該ベント送風口28を開閉自在に設けられ、車室内における乗員の顔近傍への冷風の送風状態を切り替え、デフロスタ切替ドア78はデフロスタ送風口30に臨む位置に設けられ、該デフロスタ送風口30を開閉自在に設けられる。また、ヒート切替ドア80は、ヒート通路32の上端に開閉自在に設けられ、ヒート送風口34を介した車室内における乗員の足元近傍への温風の送風状態を切り替える。 Further, the vent switching door 76 is provided at a position facing the vent air outlet 28, and the vent air outlet 28 is provided to be openable and closable to switch the state of blowing cold air to the vicinity of the occupant's face in the passenger compartment to switch the defroster switching door 78. Is provided at a position facing the defroster blower port 30, and the defroster blower port 30 is provided so as to be openable and closable. Further, the heat switching door 80 is provided at the upper end of the heat passage 32 so as to be openable and closable, and switches the state of blowing warm air to the vicinity of the feet of the occupants in the vehicle interior through the heat ventilation port 34.

本発明の実施の形態に係る車両用空調装置10は、基本的には以上のように構成されるものであり、次にその動作並びに作用効果について説明する。 The vehicle air conditioner 10 according to the embodiment of the present invention is basically configured as described above, and the operation and the effect thereof will be described next.

先ず、車室内へ冷風を送風する冷房運転を行う場合について説明する。図示しない乗員の操作によって図示しないアクチュエータが駆動してシャフト84を回転させ、それに伴って、エアミックスドア74が下方(矢印B2方向)へとスライドする。これにより、エバポレータ16とヒータコア18との連通が遮断された状態となると同時に、ベント切替ドア76によってベント送風口28が開放され、デフロスタ送風口30がデフロスタ切替ドア78によって閉塞され、ヒート通路32がヒート切替ドア80によって塞がれる。 First, a case of performing a cooling operation in which cold air is blown into the vehicle interior will be described. An actuator (not shown) is driven by an operation of an occupant (not shown) to rotate the shaft 84, and the air mix door 74 slides downward (in the direction of arrow B2) accordingly. As a result, the communication between the evaporator 16 and the heater core 18 is cut off, and at the same time, the vent air outlet 28 is opened by the vent switching door 76, the defroster air vent 30 is closed by the defroster switching door 78, and the heat passage 32 is opened. It is blocked by the heat switching door 80.

そして、送風機ユニット40から供給孔36を通じて空調ケース14の幅方向(送風方向F1)に導入され第1分割ケース22の内部へと供給された空気は、略直交方向(送風方向F2)に偏向された後にエバポレータ16を通過することで冷却された後、ヒータコア18を迂回するように流れ、開放されたベント送風口28から車室内における乗員の顔近傍へと送風される。 Then, the air introduced from the blower unit 40 in the width direction (blower direction F1) of the air conditioning case 14 through the supply hole 36 and supplied to the inside of the first split case 22 is deflected in a substantially orthogonal direction (blower direction F2). After that, it is cooled by passing through the evaporator 16, and then flows so as to bypass the heater core 18, and is blown from the opened vent air outlet 28 to the vicinity of the occupant's face in the vehicle interior.

次に、上述したエバポレータ16を通過する空気に含まれた水分が冷却され凝縮水となって該エバポレータ16に付着した場合について説明する。 Next, a case where the water contained in the air passing through the above-mentioned evaporator 16 is cooled to become condensed water and adheres to the evaporator 16 will be described.

先ず、このエバポレータ16に付着した凝縮水は、内部を通過する空気によって下流側(矢印C1方向)へと押されて下流側通風面16bまで移動した後に、その重力作用下に前記下流側通風面16bに沿って重力方向下方へと移動していき、前記エバポレータ16の下端から下方に配置されたロアケース26の第1ドレン受部42へと落下する。 First, the condensed water adhering to the evaporator 16 is pushed toward the downstream side (direction of arrow C1) by the air passing through the inside, moves to the downstream side ventilation surface 16b, and then moves to the downstream side ventilation surface 16b, and then the downstream side ventilation surface is subjected to the action of gravity. It moves downward in the direction of gravity along 16b and falls from the lower end of the evaporator 16 to the first drain receiving portion 42 of the lower case 26 arranged below.

そして、第1ドレン受部42へと落下した凝縮水は、上流側に向かって下方へと傾斜した底壁50に沿って該上流側となる第2ドレン受部44側(矢印C2方向)へと流れていく。この際、ロアケース26内において、凝縮水の流れに対向するように空気が上流側から下流側(矢印C1方向、送風方向F2)に向かって流れているが、複数の第1及び第2短片部56、58、長片部54からなる第1遮蔽壁52によって下流側(矢印C1方向)への空気の流れが好適に遮られる。 Then, the condensed water that has fallen to the first drain receiving portion 42 is directed to the second drain receiving portion 44 side (arrow C2 direction) on the upstream side along the bottom wall 50 that is inclined downward toward the upstream side. And flow. At this time, in the lower case 26, air is flowing from the upstream side to the downstream side (arrow C1 direction, blowing direction F2) so as to face the flow of condensed water, but a plurality of first and second short pieces The flow of air to the downstream side (direction of arrow C1) is suitably blocked by the first shielding wall 52 composed of 56, 58 and the long piece portion 54.

そのため、凝縮水が送風の風圧によって第1ドレン受部42内に滞留してしまうことが抑制され、第1及び第2短片部56、58、長片部54の間を通じて凝縮水が上流側へと円滑に流れる。 Therefore, it is suppressed that the condensed water stays in the first drain receiving portion 42 due to the wind pressure of the blast, and the condensed water flows upstream between the first and second short piece portions 56 and 58 and the long piece portion 54. And flow smoothly.

次に、第1ドレン受部42において第1遮蔽壁52に対して上流側へ流れた凝縮水は、幅方向に延在する区画壁46によって第2ドレン受部44側から第1ドレン受部42側への空気の流れが好適に遮られているため、凝縮水が第1遮蔽壁52の上流側で滞留してしまうことがなく好適に区画壁46に沿って幅方向両側へと流れる。
Next, the condensed water flowing upstream of the first shielding wall 52 in the first drain receiving portion 42 is discharged from the second drain receiving portion 44 side to the first drain receiving portion by the partition wall 46 extending in the width direction. Since the flow of air to the 42 side is suitably blocked, the condensed water does not stay on the upstream side of the first shielding wall 52 and preferably flows to both sides in the width direction along the partition wall 46.

そして、供給孔36から第2ドレン受部44に対して幅方向(矢印A2方向、送風方向F1)に沿って導入された空気は、その送風方向の奥側となる幅方向他端側(矢印A2方向)で圧力が高まり、幅広に形成された第2切欠部64を通じて第2連通凹部68から第1ドレン受部42側へと導入される。これにより、ロアケース26の幅方向他端側において、第1ドレン受部42側へと導入された空気によって凝縮水が幅方向他端側(奥側)から幅方向一端側(手前側)へと押し出され区画壁46に沿って流れる。 Then, the air introduced from the supply hole 36 with respect to the second drain receiving portion 44 in the width direction (arrow A2 direction, blowing direction F1) is on the other end side in the width direction (arrow) which is the back side in the blowing direction. The pressure increases in the A2 direction), and the pressure is introduced from the second communication recess 68 to the first drain receiving portion 42 side through the second notch 64 formed wide. As a result, on the other end side in the width direction of the lower case 26, the condensed water is moved from the other end side (back side) in the width direction to the one end side (front side) in the width direction by the air introduced to the first drain receiving portion 42 side. It is extruded and flows along the partition wall 46.

この凝縮水は、区画壁46に沿って幅方向一端側へと流れた後に、第1連通凹部66及び第1切欠部62を通じて上流側となる第2ドレン受部44へと流入する。 This condensed water flows to one end side in the width direction along the partition wall 46, and then flows into the second drain receiving portion 44 on the upstream side through the first communication recess 66 and the first notch 62.

この際、第1連通凹部66及び第1切欠部62には、その供給孔36側となる上流側を覆うように第2遮蔽壁70が設けられているため、前記供給孔36から導入される空気によって前記第1連通凹部66及び第1切欠部62を通じて第2ドレン受部44へと流れる凝縮水が送風によって前記第1ドレン受部42側(矢印C1方向)へと押し戻され滞留してしまうことが防止される。 At this time, since the second shielding wall 70 is provided in the first communication recess 66 and the first notch 62 so as to cover the upstream side on the supply hole 36 side, the second shielding wall 70 is introduced from the supply hole 36. Condensed water flowing to the second drain receiving portion 44 through the first communication recess 66 and the first notch 62 by air is pushed back to the first drain receiving portion 42 side (direction of arrow C1) by blowing air and stays there. Is prevented.

そして、凝縮水は、第1連通凹部66、第1切欠部62を通じて第2ドレン受部44へと流入した後、重力下方に向かって流れると共に、幅方向一端側に向かって下方へと傾斜した底壁60に沿って幅方向一端側(矢印A1方向)へと流れる。 Then, the condensed water flows into the second drain receiving portion 44 through the first communication recess 66 and the first notch 62, then flows downward in gravity and inclines downward toward one end side in the width direction. It flows along the bottom wall 60 toward one end side in the width direction (arrow A1 direction).

最後に、凝縮水は、第2ドレン受部44において底壁60に沿って幅方向一端側へと流れた後に、さらに重力方向下方へと移動してドレン排出口48へと導かれ、このドレン排出口48を通じて外部へと排出される。 Finally, the condensed water flows to one end side in the width direction along the bottom wall 60 in the second drain receiving portion 44, then moves further downward in the gravity direction and is guided to the drain discharge port 48, and this drain is guided to the drain discharge port 48. It is discharged to the outside through the discharge port 48.

以上のように、本実施の形態では、車両用空調装置10を構成する空調ケース14において、送風機ユニット40から空気の送風される供給孔36を幅方向一端側に有し、該供給孔36からの送風が空調ケース14の幅方向に沿って供給された後に、エバポレータ16の上流側通風面16aと直交するように偏向されて該エバポレータ16側へと供給され、前記エバポレータ16の下方に設けられたロアケース26が、前記エバポレータ16を通過する空気の送風方向F2において、下流側から上流側に向けて重力方向下方へと傾斜した第1ドレン受部42と、前記エバポレータ16の上流側となり、前記第1ドレン受部42に対して上流側に隣接して底壁60がさらに重力方向下方に形成された第2ドレン受部44とを備えている。 As described above, in the present embodiment, in the air conditioning case 14 constituting the vehicle air conditioner 10, a supply hole 36 in which air is blown from the blower unit 40 is provided on one end side in the width direction, and the supply hole 36 is used. After being supplied along the width direction of the air conditioning case 14, the air is deflected so as to be orthogonal to the ventilation surface 16a on the upstream side of the evaporator 16 and supplied to the evaporator 16 side, and is provided below the evaporator 16. The lower case 26 becomes the first drain receiving portion 42 inclined downward in the gravity direction from the downstream side to the upstream side in the ventilation direction F2 of the air passing through the evaporator 16, and becomes the upstream side of the evaporator 16. A second drain receiving portion 44 having a bottom wall 60 formed further downward in the direction of gravity is provided adjacent to the upstream side of the first drain receiving portion 42.

また、第2ドレン受部44には、その底壁60の最も重力方向下方となる位置に外部と連通したドレン排出口48を備えると共に、前記第1ドレン受部42と前記第2ドレン受部44との境界には、エバポレータ16の幅方向に沿って延在して当接し、該第1ドレン受部42と該第2ドレン受部44とを区画する区画壁46が設けられ、該区画壁46には、幅方向に沿った両側に前記第1ドレン受部42と前記第2ドレン受部44とを連通する第1及び第2連通凹部66、68がそれぞれ形成されている。 Further, the second drain receiving portion 44 is provided with a drain discharge port 48 communicating with the outside at a position at the lowermost position in the gravity direction of the bottom wall 60, and the first drain receiving portion 42 and the second drain receiving portion. At the boundary with 44, a partition wall 46 that extends and abuts along the width direction of the evaporator 16 to partition the first drain receiving portion 42 and the second drain receiving portion 44 is provided, and the partition wall 46 is provided. The wall 46 is formed with first and second communication recesses 66 and 68 that communicate the first drain receiving portion 42 and the second drain receiving portion 44 on both sides along the width direction, respectively.

そして、供給孔36からエバポレータ16の上流側通風面16aに沿って送風される空気の送風方向F1において、その奥側となる第2連通凹部68の幅寸法t2を、送風方向F1の手前側となる第1連通凹部66の幅寸法t1よりも大きく設定している。 Then, in the ventilation direction F1 of the air blown from the supply hole 36 along the upstream ventilation surface 16a of the evaporator 16, the width dimension t2 of the second communication recess 68 on the back side thereof is set to the front side of the ventilation direction F1. The width dimension t1 of the first communication recess 66 is set to be larger than the width dimension t1.

従って、空気がエバポレータ16の幅方向一端側となる供給孔36から空調ケース14内へと導入された際、送風方向F1の奥側(幅方向他端)から第2切欠部64及び第2連通凹部68を通じて第2ドレン受部44から第1ドレン受部42側へと空気を流通させやすくなり、該奥側となる幅方向他端側で第1ドレン受部42へと導入された送風によって凝縮水を第1ドレン受部42において幅方向一端側となる手前側へと押し流し、該幅方向一端側の第1連通凹部66及び第1切欠部62から第2ドレン受部44へと円滑に流してドレン排出口48へと導くことができる。 Therefore, when air is introduced into the air conditioning case 14 from the supply hole 36 which is one end side in the width direction of the evaporator 16, the second notch 64 and the second communication from the back side (the other end in the width direction) of the ventilation direction F1. Air can easily flow from the second drain receiving portion 44 to the first drain receiving portion 42 side through the recess 68, and the air blown into the first drain receiving portion 42 on the other end side in the width direction, which is the inner side thereof. Condensed water is flushed to the front side of the first drain receiving portion 42, which is one end side in the width direction, and smoothly from the first communication recess 66 and the first notch 62 on the one end side in the width direction to the second drain receiving portion 44. It can be flushed and led to the drain outlet 48.

その結果、例えば、車両レイアウトや空調ケース14の構造上の制約等の理由から凝縮水を排出するためのドレン排出口48がエバポレータ16の上流側に開口し、且つ、該空調ケース14内において送風方向が偏向される場合であっても、上記の構成を採用することで凝縮水をロアケース26を通じて円滑に外部へと排出することができる。 As a result, for example, the drain discharge port 48 for discharging the condensed water is opened on the upstream side of the evaporator 16 due to the vehicle layout, the structural restrictions of the air conditioning case 14, and the like, and the air is blown in the air conditioning case 14. Even when the direction is deflected, the condensed water can be smoothly discharged to the outside through the lower case 26 by adopting the above configuration.

また、第1ドレン受部42には、第1及び第2連通凹部66、68に対して下流側(矢印C1方向)に臨む位置に第1遮蔽壁52が設けられているため、第1及び第2切欠部62、64を通じて第2ドレン受部44から前記第1ドレン受部42側へと導入された空気と第2ドレン受部44側へ向かう凝縮水の流れとが対向し、該凝縮水が第1ドレン受部42において滞留してしまうことを抑制できる。そのため、第1ドレン受部42において凝縮水に対する送風の影響を低減し、第2ドレン受部44側へと該凝縮水をより円滑に流すことが可能となる。 Further, since the first drain receiving portion 42 is provided with the first shielding wall 52 at a position facing the downstream side (direction of arrow C1) with respect to the first and second communication recesses 66 and 68, the first and second communication recesses 42 and 68 are provided. The air introduced from the second drain receiving portion 44 to the first drain receiving portion 42 side through the second notch portions 62 and 64 and the flow of condensed water toward the second drain receiving portion 44 side face each other, and the condensation occurs. It is possible to prevent water from staying in the first drain receiving portion 42. Therefore, the influence of the blown air on the condensed water in the first drain receiving portion 42 can be reduced, and the condensed water can flow more smoothly to the second drain receiving portion 44 side.

さらに、第2ドレン受部44には、供給孔36からエバポレータ16の上流側通風面16aに沿って送風される空気の送風方向F1(第1の送風方向)において、第1連通凹部66及び第1切欠部62に対して手前側となる幅方向一端側(矢印A1方向)に第2遮蔽壁70を設けることで、前記第1連通凹部66及び第1切欠部62を通じて第1ドレン受部42から第2ドレン受部44へと流れる凝縮水に対し、供給孔36から導入される送風が直接的に触れることがないよう遮蔽することができる。その結果、第1ドレン受部42から第2ドレン受部44への凝縮水の流れが供給孔36からの送風によって妨げられることが防止され、凝縮水を上流側(第2ドレン受部44側)へと円滑に流すことが可能となる。 Further, in the second drain receiving portion 44, the first communication recess 66 and the first communication recess 66 in the blowing direction F1 (first blowing direction) of the air blown from the supply hole 36 along the upstream ventilation surface 16a of the evaporator 16. By providing the second shielding wall 70 on one end side (arrow A1 direction) in the width direction, which is the front side of the notch 62, the first drain receiving portion 42 passes through the first communication recess 66 and the first notch 62. The condensed water flowing from the second drain receiving portion 44 to the second drain receiving portion 44 can be shielded so that the air blown introduced from the supply hole 36 does not come into direct contact with the condensed water. As a result, it is prevented that the flow of condensed water from the first drain receiving portion 42 to the second drain receiving portion 44 is obstructed by the air blown from the supply hole 36, and the condensed water is directed to the upstream side (second drain receiving portion 44 side). ) Can be smoothly flowed.

さらにまた、ドレン排出口48は、供給孔36から送風される空気の送風方向F1(第1の送風方向)において、第1連通凹部66よりもさらに上流側となる幅方向一端側(矢印A1方向)に設けられると共に、第2ドレン受部44の底壁60が、送風方向に沿った幅方向他端側から手前側となる幅方向一端側(矢印A1方向)に向かって重力方向下方に低くなるように傾斜して形成されている。 Furthermore, the drain discharge port 48 is located at one end side in the width direction (arrow A1 direction), which is further upstream than the first communication recess 66 in the air blowing direction F1 (first blowing direction) of the air blown from the supply hole 36. ), And the bottom wall 60 of the second drain receiving portion 44 is lowered downward in the gravity direction from the other end side in the width direction along the ventilation direction toward one end side in the width direction (arrow A1 direction) to be the front side. It is formed so as to be inclined.

そのため、ドレン排出口48を、エバポレータ16を通過する空気の送風方向F2(第2の送風方向)において、最も上流側(矢印C2方向)となるように配置した場合でも、第2ドレン受部44の底壁60に沿って幅方向一端側へと導いた後に好適にドレン排出口48へと導いて円滑に外部へと排出することが可能となる。 Therefore, even when the drain outlet 48 is arranged so as to be the most upstream side (arrow C2 direction) in the air blowing direction F2 (second blowing direction) of the air passing through the evaporator 16, the second drain receiving portion 44 After guiding to one end side in the width direction along the bottom wall 60 of the above, it is possible to preferably guide to the drain discharge port 48 and smoothly discharge to the outside.

なお、本発明に係る車両用空調装置は、上述の実施の形態に限らず、本発明の要旨を逸脱することなく、種々の構成を採り得ることはもちろんである。 It should be noted that the vehicle air conditioner according to the present invention is not limited to the above-described embodiment, and of course, various configurations can be adopted without departing from the gist of the present invention.

10…車両用空調装置 14…空調ケース
16…エバポレータ 20…ドア機構
22…第1分割ケース 24…第2分割ケース
26…ロアケース 36…供給孔
40…送風機ユニット 42…第1ドレン受部
44…第2ドレン受部 46…区画壁
48…ドレン排出口 52…第1遮蔽壁
62…第1切欠部 64…第2切欠部
66…第1連通凹部 68…第2連通凹部
70…第2遮蔽壁
10 ... Vehicle air conditioner 14 ... Air conditioning case 16 ... Evaporator 20 ... Door mechanism 22 ... First split case 24 ... Second split case 26 ... Lower case 36 ... Supply hole 40 ... Blower unit 42 ... First drain receiving part 44 ... No. 2 Drain receiving portion 46 ... Partition wall 48 ... Drain discharge port 52 ... 1st shielding wall 62 ... 1st notch 64 ... 2nd notch 66 ... 1st communication recess 68 ... 2nd communication recess 70 ... 2nd shielding wall

Claims (5)

送風機と、内部に形成された空気流路に冷却器の配置されるケースとを備え、該ケースにおいて、前記送風機からの送風が前記冷却器の上流側通風面に対して略平行な第1の送風方向で導入され、該冷却器の上流側において前記上流側通風面に対して直交するように第1の送風方向から第2の送風方向へと偏向されて前記冷却器側へと供給される車両用空調装置において、
前記ケースには、前記冷却器の重力方向下方において、該冷却器に対する前記第2の送風方向の下流側から上流側に向けて前記重力方向下方へと傾斜した第1凝縮水受部と、
前記冷却器の上流側となる空気流路の底壁を構成し、前記第1凝縮水受部に対して前記第2の送風方向の上流側に隣接し、且つ、前記底壁が該第1凝縮水受部よりも重力方向下方に形成されると共に、前記底壁において最も重力方向下方となる位置に外部と連通した排水口を有した第2凝縮水受部と、
前記第1凝縮水受部と前記第2凝縮水受部との境界に設けられ、前記第1の送風方向に沿って延在して該冷却器に当接することで該第1凝縮水受部と該第2凝縮水受部とを区画する区画壁と、
を備え、
前記第1の送風方向に沿った前記区画壁の両側には、前記第1凝縮水受部と前記第2凝縮水受部とを連通する連通部をそれぞれ備え、前記第1の送風方向において奥側となる一方の連通部の幅寸法が、前記第1の送風方向において手前側となる他方の連通部の幅寸法よりも大きく形成される、車両用空調装置。
A first blower includes a blower and a case in which a cooler is arranged in an air flow path formed inside, in which case the air blown from the blower is substantially parallel to the upstream ventilation surface of the cooler. It is introduced in the ventilation direction, is deflected from the first ventilation direction to the second ventilation direction so as to be orthogonal to the upstream ventilation surface on the upstream side of the cooler, and is supplied to the cooler side. In vehicle air conditioners
In the case, a first condensed water receiving portion inclined downward in the gravity direction from the downstream side to the upstream side in the second ventilation direction with respect to the cooler under the gravity direction of the cooler.
The bottom wall of the air flow path on the upstream side of the cooler is formed, adjacent to the upstream side in the second ventilation direction with respect to the first condensed water receiving portion, and the bottom wall is the first. A second condensed water receiving part formed below the condensed water receiving part and having a drainage port communicating with the outside at the position most downward in the gravity direction on the bottom wall.
The first condensed water receiving portion is provided at the boundary between the first condensed water receiving portion and the second condensed water receiving portion, extends along the first blowing direction, and abuts on the cooler. And the partition wall that separates the second condensed water receiving portion,
Equipped with
On both sides of the partition wall along the first ventilation direction, communication portions for communicating the first condensed water receiving portion and the second condensed water receiving portion are provided, respectively, and the back in the first blowing direction. A vehicle air conditioner in which the width dimension of one communication portion on the side is formed to be larger than the width dimension of the other communication portion on the front side in the first ventilation direction.
請求項1記載の車両用空調装置において、
前記第2の送風方向において、前記連通部の下流側に臨む位置に第1遮蔽部材が設けられる、車両用空調装置。
In the vehicle air conditioner according to claim 1,
A vehicle air conditioner in which a first shielding member is provided at a position facing the downstream side of the communication portion in the second ventilation direction.
請求項1又は2記載の車両用空調装置において、
前記第2凝縮水受部には、前記第1の送風方向において前記他方の連通部に対して手前側となる位置に第2遮蔽部材が設けられる、車両用空調装置。
In the vehicle air conditioner according to claim 1 or 2.
A vehicle air conditioner in which a second shielding member is provided in the second condensed water receiving portion at a position closer to the other communicating portion in the first blowing direction.
請求項1~3のいずれか1項に記載の車両用空調装置において、
前記排水口は、前記他方の連通部よりも前記第1の送風方向において手前側となるように設けられると共に、前記第2凝縮水受部の底壁は、前記第1の送風方向において奥側よりも手前側が低くなるように傾斜している、車両用空調装置。
The vehicle air conditioner according to any one of claims 1 to 3.
The drainage port is provided so as to be on the front side in the first ventilation direction with respect to the other communication portion, and the bottom wall of the second condensed water receiving portion is on the back side in the first ventilation direction. An air conditioner for vehicles that is tilted so that the front side is lower than the front side.
請求項1~4のいずれか1項に記載の車両用空調装置において、
前記第1凝縮水受部は、前記冷却器の下流側通風面に対して重力方向下方となる位置に設けられる、車両用空調装置。
In the vehicle air conditioner according to any one of claims 1 to 4.
The first condensed water receiving portion is a vehicle air conditioner provided at a position lower in the direction of gravity with respect to the ventilation surface on the downstream side of the cooler.
JP2019039394A 2019-03-05 2019-03-05 Vehicle air conditioner Active JP7090045B2 (en)

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JP2023088503A (en) * 2021-12-15 2023-06-27 サンデン株式会社 Vehicle air-conditioning device
WO2023202643A1 (en) * 2022-04-19 2023-10-26 海信(广东)空调有限公司 Dehumidifier

Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2005170322A (en) 2003-12-15 2005-06-30 Denso Corp Air-conditioner for vehicle

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Publication number Priority date Publication date Assignee Title
JP2006069441A (en) * 2004-09-03 2006-03-16 Denso Corp Air cooling unit

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2005170322A (en) 2003-12-15 2005-06-30 Denso Corp Air-conditioner for vehicle

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