JP2004017680A - Air-conditioner for vehicle - Google Patents

Air-conditioner for vehicle Download PDF

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Publication number
JP2004017680A
JP2004017680A JP2002171534A JP2002171534A JP2004017680A JP 2004017680 A JP2004017680 A JP 2004017680A JP 2002171534 A JP2002171534 A JP 2002171534A JP 2002171534 A JP2002171534 A JP 2002171534A JP 2004017680 A JP2004017680 A JP 2004017680A
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JP
Japan
Prior art keywords
air
rotating shaft
axial direction
small
gap
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JP2002171534A
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Japanese (ja)
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JP3711960B2 (en
Inventor
Tatsumi Omae
大前　辰己
Tomohito Tsunoda
角田　智史
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Denso Corp
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Denso Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an air-conditioner for a vehicle capable of restraining dispersion of blowout air temperature from left and right blowout ports by solving a problem wherein deviation is caused in quantity of air passing through a clearance in the axial direction of an axis of rotation 16a and accordingly the blowout air temperature from the left and right blowout holes is dispersed as clearance dimensions between an air mix door rotation axis 16a and a case are dispersed in the axial direction of the axis of rotation 16a. <P>SOLUTION: A large clearance part is formed between a small diametrical part 16b and the case by forming a small diametrical part 16b on a central part in the axial direction of the air mix door rotary shaft 16a. Consequently, a pattern of the deviation becomes symmetrically stable in the axial direction of the rotary shaft 16a and consequently, it is possible to restrain dispersion of the blowout air temperature from the left and right blowout ports as the large clearance part and the small clearance part are symmetrically arranged in the axial direction of the rotary shaft 16a though the deviation is caused in the quantity of the air passing the clearances in the axial direction of the rotary shaft 16a. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、暖房用熱交換器に流入する空気の量をエアミックスドアにより調整する形式の車両用空調装置に関する。
【０００２】
【従来の技術】
従来、この種の車両用空調装置においては、エアミックスドアの回転軸の両端がケースにより回動自在に保持されると共に、回転軸の軸方向中間部がケースにより覆われている。そして、回転軸とケースとの干渉を避けるために、回転軸とケースとの間には隙間が設けられている。
【０００３】
【発明が解決しようとする課題】
ところで、エアミックスドアやケースは樹脂成形品であるため、成形歪みにより回転軸とケースとの間の隙間寸法が回転軸の軸方向（ユニットの幅方向）でばらついてしまう。そのため、回転軸の軸方向において、隙間を通る空気の量に偏りが生じ、それが原因で左右の吹出口からの吹出空気温度がばらついてしまうという問題があった。
【０００４】
そして、従来は成形用の金型をチューニングすることで成形歪みを小さくして、上記の問題に対処していたが、金型のチューニングには多大な工数と費用がかかるため、製品のコストダウンの妨げになっていた。
【０００５】
本発明は上記の点に鑑みてなされたもので、金型のチューニングをしなくても、左右の吹出口からの吹出空気温度のばらつきを抑制可能にすることを目的とする。
【０００６】
【課題を解決するための手段】
上記目的を達成するため、請求項１に記載の発明では、送風空気の通路を形成するケース（１１）と、通路中に配置され、送風空気を加熱する暖房用熱交換器（１３）と、通路中で且つ暖房用熱交換器（１３）の空気流れ上流側に配置され、暖房用熱交換器（１３）を通過する送風空気と暖房用熱交換器（１３）をバイパスする送風空気との風量割合を調整するエアミックスドア（１６）とを備え、エアミックスドア（１６）の回転軸（１６ａ）が所定の隙間（２２）をもってケース（１１）により覆われている車両用空調装置において、隙間（２２）の寸法が大きい大隙間部と隙間（２２）の寸法が小さい小隙間部とが形成され、大隙間部と小隙間部が、回転軸（１６ａ）の軸方向に対称に配置されていることを特徴とする。
【０００７】
これによると、大隙間部と小隙間部とでは隙間を通る空気の量が異なるため、回転軸の軸方向において隙間を通る空気の量に偏りが生じるものの、大隙間部と小隙間部を回転軸の軸方向に対称に配置しているため、偏りのパターンが回転軸の軸方向に対称な安定したものとなり、従って、左右の吹出口からの吹出空気温度のばらつきを抑制することができる。
【０００８】
請求項２に記載の発明のように、大隙間部を回転軸（１６ａ）の軸方向中央部に配置し、小隙間部を回転軸（１６ａ）の軸方向両端側に配置することができる。また、請求項３に記載の発明のように、小隙間部を回転軸（１６ａ）の軸方向中央部に配置し、大隙間部を回転軸（１６ａ）の軸方向両端側に配置することもできる。
【０００９】
なお、上記各手段の括弧内の符号は、後述する実施形態に記載の具体的手段との対応関係の一例を示すものである。
【００１０】
【発明の実施の形態】
（第１実施形態）
図１は第１実施形態に係る車両用空調装置の空調ユニット部の模式的な断面図、図２は図１のＡ部の拡大断面図、図３は図１のエアミックスドア１６の斜視図である。
【００１１】
本実施形態の空調装置はいわゆるセミセンター置きレイアウトのものであって、車室内前方の計器盤内部のうち車両左右方向の略中央部に空調ユニット１０を配置している。図１の矢印は車両の上下、前後方向に対する、空調ユニット１０の搭載方向を示している。
【００１２】
そして、この空調ユニット１０に空調空気を送風する送風機ユニット（図示せず）が空調ユニット１０側方（助手席側）にオフセット配置されている。この送風機ユニットは、周知のごとく内気または外気を切替導入する内外気切替箱と、この内外気切替箱から吸入した空気（内気または外気）を空調ユニット１０に向けて送風する遠心式の電動送風ファンとを備えている。
【００１３】
空調ユニット１０は樹脂製の空調ケース１１を有し、この空調ケース１１の内部に、送風空気が熱交換器１２、１３を通過して車両前方側から車両後方側へ向かって流れる空気通路を形成している。
【００１４】
空調ケース１１内の空気通路において、車両前方側に蒸発器１２が配置され、車両後方側にヒータコア１３が配置されている。蒸発器１２は周知のごとく冷凍サイクルの冷媒の蒸発潜熱を空調空気から吸熱して空調空気を冷却する冷房用熱交換器である。ヒータコア１３は車両エンジンの温水（冷却水）を熱源流体として空調空気を加熱する暖房用熱交換器である。空調ケース１１において、最も車両前方側（蒸発器１２の前方位置）で、かつ、助手席側の側面部には、図示しない送風機ユニットからの送風空気が流入する空気入口部１４が形成してある。
【００１５】
ヒータコア１３の上方部に冷風バイパス通路１５が形成され、ヒータコア１３の上方部で、且つ蒸発器１２の直ぐ下流側（車両後方側）には、板状のエアミックスドア１６が回転軸１６ａを中心として回転可能に配置されている。このエアミックスドア１６は冷風バイパス通路１５を通過する冷風とヒータコア１３のコア部１３ａを通過する温風との風量割合を調整して車室内への吹出空気温度を所望温度に調整するものである。
【００１６】
ヒータコア１３直後の部位には上方に向かう温風通路１７が形成され、この温風通路１７からの温風と冷風バイパス通路１５からの冷風が空気混合部１８で混合される。
【００１７】
空調ケース１１の空気通路下流側には複数の吹出開口部１９〜２１が形成されており、この吹出開口部１９〜２１のうち、デフロスタ開口部１９は図示しないデフロスタダクトを介して車両窓ガラスの内面に向けて空調空気を吹き出し、フェイス開口部２０は図示しないフェイスダクトを介して車室内の乗員頭部へ向けて空気を吹き出すようになっている。また、フット開口部２１の下流側は空調ケース１１の左右両側に配置されたフット吹出口に連通し、このフット吹出口から乗員の足元部に温風を吹き出すようなっている。なお、吹出開口部１９〜２１は、図示しない吹出モードドアにより開閉される。
【００１８】
次に、エアミックスドア１６およびその近傍の構成について説明する。図２に示すように、エアミックスドア１６の回転軸１６ａは所定の隙間２２をもって空調ケース１１の覆い部１１ａにより覆われている。この覆い部１１ａは回転軸１６ａの軸方向全域でその断面形状は一定である。
【００１９】
エアミックスドア１６の回転軸１６ａは、図３に示すように軸方向中央部に円柱状の小径部１６ｂが形成され、軸方向両端側に小径部１６ｂよりも大径の円柱状の大径部１６ｃが形成されおり、軸方向に対称な形状になっている。
【００２０】
従って、回転軸１６ａと覆い部１１ａとの間の隙間２２の寸法は、回転軸１６ａの小径部１６ｂでは大きく、回転軸１６ａの大径部１６ｃでは小さくなっている。換言すると、隙間２２の寸法が大きい大隙間部と隙間２２の寸法が小さい小隙間部とが、回転軸１６ａの軸方向に対称に配置されている。より詳細には、大隙間部が回転軸１６ａの軸方向中央部に配置され、小隙間部が回転軸１６ａの軸方向両端側に配置されている。
【００２１】
上記構成になる空調装置において、蒸発器１２にて冷却された送風空気は、エアミックスドア１６の開度に応じて冷風バイパス通路１５側とヒータコア１３側とに分岐して流れる。この際、ヒータコア１３側に向かった送風空気の一部が、矢印Ｂで示すように回転軸１６ａと覆い部１１ａとの間の隙間２２を通過し、ヒータコア１３を通過することなく空気混合部１８に流入する。
【００２２】
そして、隙間２２を通過する空気の量は、大隙間部である回転軸１６ａの小径部１６ｂで多く、小隙間部である回転軸１６ａの大径部１６ｃで少なくなる。このように、回転軸１６ａの軸方向において隙間２２を通る空気の量に偏りが生じるものの、大隙間部と小隙間部を回転軸１６ａの軸方向に対称に配置しているため、偏りのパターンが回転軸１６ａの軸方向に対称な安定したものとなり、従って、左右の吹出口からの吹出空気温度のばらつきを抑制することができる。
【００２３】
（第２〜第５実施形態）
エアミックスドア１６の回転軸１６ａは軸方向に対称な形状であればよく、図４〜図７に示すような形状としても、第１実施形態と同様の効果を得ることができる。なお、図示しない部位は第１実施形態と同一である。
【００２４】
図４に示す第２実施形態の回転軸１６ａは、回転軸１６ａの外周面から突出したリブ１６ｄが、軸方向に離れた位置で２個所に形成されている。そして、回転軸１６ａと覆い部１１ａとの間の隙間２２の寸法は、リブ１６ｄがない部位では大きく、リブ１６ｄがある部位では小さくなる。
【００２５】
図５に示す第３実施形態の回転軸１６ａは、軸方向中央部に円柱状の大径部１６ｃが形成され、軸方向両端側に大径部１６ｃよりも小径の円柱状の小径部１６ｂが形成されている。この構成により、小隙間部が回転軸１６ａの軸方向中央部に配置され、大隙間部が回転軸１６ａの軸方向両端側に配置される。
【００２６】
図６に示す第４実施形態の回転軸１６ａは、軸方向中央部から軸方向両端に向かって細くなるテーパー形状になっており、回転軸１６ａと覆い部１１ａとの間の隙間２２の寸法は、軸方向中央部から軸方向両端に向かって大きくなる。
【００２７】
図７に示す第５実施形態の回転軸１６ａは、軸方向中央部から軸方向両端に向かって太くなるテーパー形状になっており、回転軸１６ａと覆い部１１ａとの間の隙間２２の寸法は、軸方向中央部から軸方向両端に向かって小さくなる。
【００２８】
（他の実施形態）
上記各実施形態では、大隙間部と小隙間部とを回転軸１６ａの軸方向に対称に配置するために、回転軸１６ａの形状を種々変更したが、回転軸１６ａの断面形状をその軸方向全域で一定とし、空調ケース１１の覆い部１１ａの断面形状を回転軸１６ａの軸方向に沿って変化させることにより、大隙間部と小隙間部とを回転軸１６ａの軸方向に対称に配置するようにしてもよい。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係る車両用空調装置における空調ユニット部の模式的な断面図である。
【図２】図１のＡ部の拡大断面図である。
【図３】図１のエアミックスドア１６の斜視図である。
【図４】第２実施形態のエアミックスドア回転軸１６ａの斜視図である。
【図５】第３実施形態のエアミックスドア回転軸１６ａの斜視図である。
【図６】第４実施形態のエアミックスドア回転軸１６ａの斜視図である。
【図７】第５実施形態のエアミックスドア回転軸１６ａの斜視図である。
【符号の説明】
１１…ケース、１３…ヒータコア（暖房用熱交換器）、
１６…エアミックスドア、１６ａ…回転軸、２２…隙間。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle air conditioner in which the amount of air flowing into a heating heat exchanger is adjusted by an air mixing door.
[0002]
[Prior art]
Conventionally, in this type of vehicle air conditioner, both ends of a rotation shaft of an air mixing door are rotatably held by a case, and an intermediate portion in the axial direction of the rotation shaft is covered by the case. In order to avoid interference between the rotating shaft and the case, a gap is provided between the rotating shaft and the case.
[0003]
[Problems to be solved by the invention]
By the way, since the air mix door and the case are resin molded products, a gap dimension between the rotating shaft and the case varies in the axial direction of the rotating shaft (the width direction of the unit) due to molding distortion. Therefore, there is a problem that the amount of air passing through the gap is biased in the axial direction of the rotation shaft, and as a result, the temperature of the air blown from the left and right outlets varies.
[0004]
Conventionally, the above problems have been dealt with by reducing the molding distortion by tuning the molding die, but since the tuning of the die requires a lot of man-hours and cost, the cost of the product is reduced. Was in the way.
[0005]
The present invention has been made in view of the above points, and an object of the present invention is to make it possible to suppress variations in the temperature of air blown from left and right outlets without tuning a mold.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a case (11) that forms a passage for the blown air, a heating heat exchanger (13) that is disposed in the passage and heats the blown air, In the passage and on the upstream side of the air flow of the heating heat exchanger (13), there is a flow of air blown through the heating heat exchanger (13) and air blown by the heating heat exchanger (13). An air mixing door (16) for adjusting an air volume ratio, wherein a rotating shaft (16a) of the air mixing door (16) is covered by a case (11) with a predetermined gap (22). A large gap portion having a large gap (22) and a small gap portion having a small gap (22) are formed, and the large gap portion and the small gap portion are arranged symmetrically in the axial direction of the rotating shaft (16a). It is characterized by having.
[0007]
According to this, since the amount of air passing through the gap is different between the large gap and the small gap, the amount of air passing through the gap in the axial direction of the rotating shaft is biased, but the large gap and the small gap are rotated. Since they are arranged symmetrically in the axial direction of the shaft, the bias pattern becomes stable symmetrically in the axial direction of the rotating shaft, and therefore, it is possible to suppress variations in the temperature of the air blown from the left and right outlets.
[0008]
As in the second aspect of the present invention, the large gap portion can be arranged at the axial center of the rotating shaft (16a), and the small gap portion can be arranged at both axial ends of the rotating shaft (16a). Further, as in the third aspect of the present invention, the small gap may be arranged at the axial center of the rotating shaft (16a), and the large gap may be arranged at both axial ends of the rotating shaft (16a). it can.
[0009]
In addition, the code | symbol in parenthesis of the said each means shows an example of the correspondence with the concrete means described in embodiment mentioned later.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
(1st Embodiment)
FIG. 1 is a schematic sectional view of an air conditioning unit of the vehicle air conditioner according to the first embodiment, FIG. 2 is an enlarged sectional view of part A in FIG. 1, and FIG. 3 is a perspective view of the air mix door 16 in FIG. It is.
[0011]
The air conditioner of the present embodiment has a so-called semi-center layout, in which an air conditioner unit 10 is arranged at a substantially central portion in the left-right direction of the vehicle within an instrument panel in front of a vehicle cabin. The arrows in FIG. 1 indicate the mounting direction of the air conditioning unit 10 with respect to the up, down, front and rear directions of the vehicle.
[0012]
A blower unit (not shown) for blowing conditioned air to the air conditioning unit 10 is offsetly disposed on the side of the air conditioning unit 10 (passenger seat side). As is well known, the blower unit includes an inside / outside air switching box for switching and introducing inside air or outside air, and a centrifugal electric blower for blowing air (inside air or outside air) drawn from the inside / outside air switching box toward the air conditioning unit 10. And
[0013]
The air-conditioning unit 10 has a resin-made air-conditioning case 11, and inside the air-conditioning case 11, an air passage is formed in which the blown air passes through the heat exchangers 12, 13 and flows from the vehicle front side to the vehicle rear side. are doing.
[0014]
In the air passage in the air-conditioning case 11, the evaporator 12 is arranged on the vehicle front side, and the heater core 13 is arranged on the vehicle rear side. As is well known, the evaporator 12 is a cooling heat exchanger that cools the conditioned air by absorbing the latent heat of evaporation of the refrigerant in the refrigeration cycle from the conditioned air. The heater core 13 is a heating heat exchanger that heats conditioned air using hot water (cooling water) of a vehicle engine as a heat source fluid. In the air-conditioning case 11, an air inlet portion 14 through which blast air from a blower unit (not shown) flows is formed on the side of the frontmost side of the vehicle (front position of the evaporator 12) and on the side of the passenger seat. .
[0015]
A cool air bypass passage 15 is formed above the heater core 13, and a plate-shaped air mix door 16 is provided around the rotation shaft 16 a above the heater core 13 and immediately downstream of the evaporator 12 (rear side of the vehicle). It is arranged so as to be rotatable. The air mix door 16 adjusts the ratio of the amount of cold air passing through the cool air bypass passage 15 and the amount of warm air passing through the core portion 13a of the heater core 13 to adjust the temperature of the air blown into the vehicle cabin to a desired temperature. .
[0016]
A warm air passage 17 is formed at a position immediately after the heater core 13 and extends upward. The warm air from the warm air passage 17 and the cool air from the cool air bypass passage 15 are mixed in the air mixing section 18.
[0017]
A plurality of blowout openings 19 to 21 are formed on the downstream side of the air passage of the air conditioning case 11, and among these blowout openings 19 to 21, the defroster opening 19 is connected to a vehicle window glass through a defroster duct (not shown). The conditioned air is blown toward the inner surface, and the face opening 20 blows air toward the head of the occupant in the vehicle cabin through a face duct (not shown). The downstream side of the foot opening 21 communicates with foot outlets arranged on both left and right sides of the air-conditioning case 11, and warm air is blown out from the foot outlets to the feet of the occupant. The blowout openings 19 to 21 are opened and closed by a blowout mode door (not shown).
[0018]
Next, the configuration of the air mix door 16 and its vicinity will be described. As shown in FIG. 2, the rotation shaft 16 a of the air mix door 16 is covered by a cover 11 a of the air conditioning case 11 with a predetermined gap 22. The cross-sectional shape of the cover portion 11a is constant in the entire axial direction of the rotating shaft 16a.
[0019]
As shown in FIG. 3, the rotary shaft 16a of the air mix door 16 has a cylindrical small-diameter portion 16b formed at the center in the axial direction, and a cylindrical large-diameter portion having a diameter larger than the small-diameter portion 16b at both axial ends. 16c is formed, and has a shape symmetrical in the axial direction.
[0020]
Therefore, the size of the gap 22 between the rotating shaft 16a and the cover 11a is large at the small diameter portion 16b of the rotating shaft 16a and small at the large diameter portion 16c of the rotating shaft 16a. In other words, the large gap portion where the size of the gap 22 is large and the small gap portion where the size of the gap 22 is small are symmetrically arranged in the axial direction of the rotating shaft 16a. More specifically, the large clearance is disposed at the axial center of the rotating shaft 16a, and the small clearance is disposed at both axial ends of the rotating shaft 16a.
[0021]
In the air conditioner having the above configuration, the blown air cooled by the evaporator 12 branches and flows to the side of the cool air bypass passage 15 and the side of the heater core 13 according to the opening of the air mix door 16. At this time, a part of the air blown toward the heater core 13 passes through the gap 22 between the rotating shaft 16a and the cover 11a as indicated by the arrow B, and does not pass through the heater core 13 without passing through the heater core 13. Flows into.
[0022]
The amount of air passing through the gap 22 is large at the small-diameter portion 16b of the rotary shaft 16a, which is a large gap portion, and is small at the large-diameter portion 16c of the rotary shaft 16a, which is a small gap portion. As described above, although the amount of air passing through the gap 22 is biased in the axial direction of the rotating shaft 16a, the large gap portion and the small gap portion are arranged symmetrically in the axial direction of the rotating shaft 16a. Becomes stable symmetrically in the axial direction of the rotating shaft 16a, and therefore, it is possible to suppress variations in the temperature of the air blown from the left and right outlets.
[0023]
(Second to fifth embodiments)
The rotary shaft 16a of the air mix door 16 may have any shape as long as it is symmetric in the axial direction, and the same effects as those of the first embodiment can be obtained even if the shape is as shown in FIGS. Parts not shown are the same as in the first embodiment.
[0024]
In the rotary shaft 16a of the second embodiment shown in FIG. 4, ribs 16d protruding from the outer peripheral surface of the rotary shaft 16a are formed at two locations separated in the axial direction. The dimension of the gap 22 between the rotating shaft 16a and the cover 11a is large in a portion without the rib 16d and small in a portion with the rib 16d.
[0025]
The rotary shaft 16a according to the third embodiment shown in FIG. 5 has a cylindrical large-diameter portion 16c formed at the center in the axial direction, and a cylindrical small-diameter portion 16b having a smaller diameter than the large-diameter portion 16c at both axial ends. Is formed. With this configuration, the small gap portion is arranged at the axial center of the rotating shaft 16a, and the large gap portion is arranged at both axial ends of the rotating shaft 16a.
[0026]
The rotating shaft 16a according to the fourth embodiment shown in FIG. 6 has a tapered shape that narrows from the axial center to both ends in the axial direction, and the dimension of the gap 22 between the rotating shaft 16a and the cover 11a is , From the center in the axial direction toward both ends in the axial direction.
[0027]
The rotating shaft 16a of the fifth embodiment shown in FIG. 7 has a tapered shape that becomes thicker from the axial center to both axial ends, and the size of the gap 22 between the rotating shaft 16a and the cover 11a is , From the central portion in the axial direction toward both ends in the axial direction.
[0028]
(Other embodiments)
In the above embodiments, the shape of the rotating shaft 16a is variously changed in order to arrange the large gap portion and the small gap portion symmetrically in the axial direction of the rotating shaft 16a. The large gap portion and the small gap portion are arranged symmetrically in the axial direction of the rotating shaft 16a by making the cross-sectional shape of the covering portion 11a of the air-conditioning case 11 constant along the axial direction of the rotating shaft 16a. You may do so.
[Brief description of the drawings]
FIG. 1 is a schematic sectional view of an air conditioning unit in a vehicle air conditioner according to a first embodiment of the present invention.
FIG. 2 is an enlarged sectional view of a portion A in FIG.
FIG. 3 is a perspective view of the air mix door 16 of FIG.
FIG. 4 is a perspective view of an air mix door rotating shaft 16a according to a second embodiment.
FIG. 5 is a perspective view of an air mix door rotating shaft 16a according to a third embodiment.
FIG. 6 is a perspective view of an air mix door rotating shaft 16a of a fourth embodiment.
FIG. 7 is a perspective view of an air mix door rotating shaft 16a of a fifth embodiment.
[Explanation of symbols]
11 ... case, 13 ... heater core (heat exchanger for heating),
16 ... air mix door, 16a ... rotating shaft, 22 ... gap.

Claims (3)

送風空気の通路を形成するケース（１１）と、
前記通路中に配置され、送風空気を加熱する暖房用熱交換器（１３）と、
前記通路中で且つ前記暖房用熱交換器（１３）の空気流れ上流側に配置され、前記暖房用熱交換器（１３）を通過する送風空気と前記暖房用熱交換器（１３）をバイパスする送風空気との風量割合を調整するエアミックスドア（１６）とを備え、
前記エアミックスドア（１６）の回転軸（１６ａ）が所定の隙間（２２）をもって前記ケース（１１）により覆われている車両用空調装置において、
前記隙間（２２）の寸法が大きい大隙間部と前記隙間（２２）の寸法が小さい小隙間部とが形成され、前記大隙間部と前記小隙間部が、前記回転軸（１６ａ）の軸方向に対称に配置されていることを特徴とする車両用空調装置。A case (11) for forming a passage of the blast air,
A heating heat exchanger (13) arranged in the passage for heating the blast air;
It is arranged in the passage and on the upstream side of the air flow of the heating heat exchanger (13), and bypasses the blast air passing through the heating heat exchanger (13) and the heating heat exchanger (13). An air mixing door (16) for adjusting the air flow ratio with the blowing air,
In a vehicle air conditioner, a rotating shaft (16a) of the air mix door (16) is covered by the case (11) with a predetermined gap (22).
A large gap portion having a large dimension of the gap (22) and a small gap portion having a small dimension of the gap (22) are formed, and the large gap portion and the small gap portion are formed in the axial direction of the rotating shaft (16a). An air conditioner for a vehicle, which is symmetrically arranged. 前記大隙間部が前記回転軸（１６ａ）の軸方向中央部に配置され、前記小隙間部が前記回転軸（１６ａ）の軸方向両端側に配置されていることを特徴とする請求項１に記載の車両用空調装置。The said large clearance part is arrange | positioned in the axial center part of the said rotating shaft (16a), and the said small clearance part is arrange | positioned at the axial both ends of the said rotating shaft (16a), The Claim 1 characterized by the above-mentioned. An air conditioner for a vehicle as described in the above. 前記小隙間部が前記回転軸（１６ａ）の軸方向中央部に配置され、前記大隙間部が前記回転軸（１６ａ）の軸方向両端側に配置されていることを特徴とする請求項１に記載の車両用空調装置。The said small clearance part is arrange | positioned at the axial center part of the said rotating shaft (16a), and the said large clearance part is arrange | positioned at the axial both ends of the said rotating shaft (16a), The Claim 1 characterized by the above-mentioned. An air conditioner for a vehicle as described in the above.
JP2002171534A 2002-06-12 2002-06-12 Air conditioner for vehicles Expired - Fee Related JP3711960B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130014913A1 (en) * 2011-07-13 2013-01-17 Mitsubishi Heavy Industries, Ltd. Vehicle air-conditioning apparatus
JP2020506361A (en) * 2017-02-08 2020-02-27 ヴァレオ システム テルミク Shut-off flaps and corresponding heating, ventilation and / or air conditioning

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101403446B1 (en) * 2007-02-15 2014-06-03 한라비스테온공조 주식회사 Air conditioning device for vehicles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130014913A1 (en) * 2011-07-13 2013-01-17 Mitsubishi Heavy Industries, Ltd. Vehicle air-conditioning apparatus
WO2013008662A1 (en) * 2011-07-13 2013-01-17 三菱重工業株式会社 Vehicle air-conditioning device
JP2013018444A (en) * 2011-07-13 2013-01-31 Mitsubishi Heavy Ind Ltd Vehicle air-conditioning apparatus
JP2020506361A (en) * 2017-02-08 2020-02-27 ヴァレオ システム テルミク Shut-off flaps and corresponding heating, ventilation and / or air conditioning
JP2021121780A (en) * 2017-02-08 2021-08-26 ヴァレオ システム テルミク Shutoff flap, corresponding heater, ventilator and/or air-conditioning facility

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