JP4385174B2 - Automotive air conditioner - Google Patents

Automotive air conditioner Download PDF

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Publication number
JP4385174B2
JP4385174B2 JP36372599A JP36372599A JP4385174B2 JP 4385174 B2 JP4385174 B2 JP 4385174B2 JP 36372599 A JP36372599 A JP 36372599A JP 36372599 A JP36372599 A JP 36372599A JP 4385174 B2 JP4385174 B2 JP 4385174B2
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JP
Japan
Prior art keywords
air
cold air
passage
heat exchanger
unit case
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Expired - Fee Related
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JP36372599A
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Japanese (ja)
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JP2001180249A (en
Inventor
秀樹 長野
大助 荒木
明利 野口
勝之 池田
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Valeo Thermal Systems Japan Corp
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Valeo Thermal Systems Japan Corp
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Priority to JP36372599A priority Critical patent/JP4385174B2/en
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Description

【0001】
【発明の属する技術分野】
この発明は自動車用空調装置に関し、特に温風専用ドアと冷風専用ドアとを有する自動車用空調装置に関する。
【0002】
【従来の技術】
図3は従来の自動車用空調装置の縦断面図である。
【0003】
この自動車用空調装置は、エバポレータ110と、ヒータコア120と、ユニットケース130とを備える。
【0004】
ユニットケース130内には上流側から下流側へ、エバポレータ110とヒータコア120とが収容されている。
【0005】
エバポレータ110はブロア(図示せず)によって吸入された空気を冷却する。
【0006】
ヒータコア120はエバポレエータ110からの空気を加熱する。
【0007】
ユニットケース130内にはエバポレータ110を通過した空気が通風方向の上流側から下流側へ流れる冷風通路111と、ヒータコア120を通過した空気が車両上下方向下側から上側へ流れる温風通路121と、冷風通路111下流の空気と温風通路121下流の空気とが混ざり合うエアミックス空間131とが形成されている。
【0008】
ヒータコア120の車両上下方向上側には冷風通路111を通過する空気の量を調整する冷風調整ドア132が配置されている。冷風調整ドア132はバタフライドアである。
【0009】
ヒータコア120の上流にはヒータコア120で加熱される空気の量を調整する温風調整ドア133が配置されている。
【0010】
ユニットケース130内には、デフ吹出用開口135を開閉する開閉ドア145と、ベント吹出用開口136を開閉する開閉ドア146と、フット吹出用開口137を開閉する開閉ドア147とが設けられている。
【0011】
デフ吹出用開口135及びベント吹出用開口136はユニットケース130の上部に設けられ、フット吹出用開口137はユニットケース130の下部に設けられている。
【0012】
ユニットケース130内に導入された空気はエバポレータ110を通過する。エバポエータ110を通過した空気の一部は冷風通路111の車両上下方向上側領域を通ってエアミックス空間131へ向かう。空気はエバポレータ110を通過するとき、冷却される。
【0013】
エバポレータ110を通過した空気の残りは冷風通路111の車両上下方向下側領域を通ってヒータコア120へ向かう。ヒータコア120を通過した空気は温風通路121を通ってエアミックス空間131に向かう。空気はヒータコア120を通過するとき、加熱される。
【0014】
【発明が解決しようとする課題】
ところで、バイレベルモードではベント吹出用開口136とフット吹出用開口137とが開く。
【0015】
このとき、ベント吹出用開口136から吹き出される空気とフット吹出用開口137から吹き出される空気との間で温度差(例えば15〜25℃)がつくこと、すなわち、ベント吹出用開口136からは冷たい空気が、フット吹出用開口137からは暖かい空気がそれぞれ吹き出されるのが望ましい。
【0016】
しかし、冷風通路111の下流域は温風通路121の車両上下方向上側に位置するため、フルホット状態から若干冷風調整ドア132を開けたとき(中間温度調節領域という)には、冷風と温風とがエアミックス空間131で十分に混ざり合わず、ベント吹出用開口136から所望の温度よりも低い温度の空気CAが、フット吹出用開口137から所望の温度よりも高い空気HAがそれぞれ吹き出されてしまう。
【0017】
例えば、バイレベルモード時、ベント吹出用開口136から吹き出される空気とフット吹出用開口137から吹き出される空気との間で温度差がつきすぎてしまい、乗員に不快感を与えてしまう。
【0018】
なお、デフフットモード時にも中間温度調節領域に同様の問題が発生する。
【0019】
この発明はこのような事情に鑑みてなされたもので、その課題はバイレベルモード時等における温度調節性を向上させた自動車用空調装置を提供することである。
【0020】
【課題を解決するための手段】
前述の課題を解決するため請求項1記載の発明は、ブロアからの空気を冷却する冷却用熱交換器と、この冷却用熱交換器からの空気を加熱する加熱用熱交換器と、これらを収容するユニットケースと、前記冷却用熱交換器を通過した空気が通風方向の上流側から下流側へ流れる冷風通路と、前記加熱用熱交換器の車両上下方向上側に配置され、前記冷風通路を通過する空気の量を調整する冷風調整ドアと、前記加熱用熱交換器の上流に配置され、前記加熱用熱交換器で加熱される空気の量を調整する温風調整ドアと、前記加熱用熱交換器を通過した空気が車両上下方向下側から上側へ流れる温風通路と、前記冷風通路下流の空気と前記温風通路下流の空気とが混ざり合うエアミックス空間とを備えている自動車用空調装置において、前記冷風調整ドアがバタフライドアであり、その冷風調整ドアの両端部近傍には、前記冷風通路の一部を塞ぐそれぞれのリブが冷風調整ドアの両端部が描く回転軌跡に沿って円弧状に設けられ、その一方のリブは、ユニットケースの幅方向の全体に亘って設けられて、前記冷風調整ドアの一端部とで開閉制御され、また他方のリブは、二つより成り、ユニットケースの幅方向の両端壁面にそれぞれ設けられ、その二つの幅を加えた長さがユニットケースの幅よりも小さく形成され、前記冷風調整ドアの他端部とで開閉制御されることを特徴とする。
【0021】
フルホット状態からバタフライバルブ(冷風調整ドア)が開かれる行程において、若干開けたとき、冷風調整ドアの一端部が一方のリブとで冷風通路を閉じているが、その他端部が冷風通路を開き、リブ間を通して冷風を流し始め、一部を塞がれた冷風通路を通った冷風が、エアミックス空間で温風通路の空気の一部と混ぜ合わされる。
【0022】
請求項2記載の発明は、請求項1に記載の自動車用空調装置において、前記ユニットケースの側面を外側に膨らませることによって、前記温風通路及び前記エアミックス空間の通路の幅方向寸法を前記冷風通路の通路の幅方向寸法より大きくしたことを特徴とする。
【0023】
冷風通路が絞られず、フルクール時に通気抵抗が大きくならない。
【0024】
【発明の実施の形態】
以下、この発明の実施の形態を図面に基づいて説明する。
【0025】
図1(a)はこの発明の第1実施形態に係る自動車用空調装置の縦断面図、図1(b)は図1(a)の1b−1b線に沿った断面図である。
【0026】
この自動車用空調装置は、エバポレータ10と、ヒータコア20と、ユニットケース30とを備える。
【0027】
ユニットケース30内には上流側から下流側へ、エバポレータ(冷却用熱交換器)10とヒータコア(加熱用熱交換器)20とが収容されている。
【0028】
エバポレータ10はユニットケース30内の通路の全部を遮るようにほぼ垂直に配置され、ブロア(図示せず)によって吸入された空気を冷却する。
【0029】
ヒータコア20はユニットケース30内の通路の下半分を遮るように配置され、エバポレエータ10からの空気を加熱する。
【0030】
ユニットケース30内には、エバポレータ10を通過した空気が通風方向の上流側から下流側へ流れる冷風通路11と、ヒータコア20を通過した空気が車両上下方向下側から上側へ流れる温風通路21と、冷風通路11下流の空気と温風通路21下流の空気とが混ざり合うエアミックス空間31とが形成されている。
【0031】
冷風通路11の下流域は温風通路21の車両上下方向上側に位置する。
【0032】
ヒータコア20の車両上下方向上側には冷風通路11を通過する空気の量を調整する冷風調整ドア32が配置されている。この冷風調整ドア32は対称型のバタフライドアである。
【0033】
冷風調整ドア32の両端近傍には、冷風通路11の一部を塞ぐリブ40,41,42が設けられている。リブ40、41,42は冷風調整ドア32の両端が描く軌跡に沿ってほぼ円弧状に形成されている。
【0034】
リブ40はユニットケース30の幅方向の全体に亘って形成されている(図1(b)参照)。
【0035】
このリブ40は冷風調整ドア32の上端側(一端部32b)で、冷風調整ドア32の開度10〜40%の範囲で冷風通路11の一部を塞ぐ。
【0036】
リブ41,42は冷風調整ドア32の下端側(他端部32c)で、冷風調整ドア32の開度10〜60%の範囲で冷風通路11の一部を塞ぐ。
【0037】
リブ41,42はユニットケース30の幅方向の両端壁面にそれぞれ形成されている。
【0038】
リブ41の幅をD1、リブ42の幅をD2、ユニットケース30の幅をD3としたとき、D1、D2及びD3の間には(1)式の関係がある。
【0039】
(D1+D2)/D3=0.1〜0.4 (1)
【0040】
ヒータコア20の上流にはヒータコア20で加熱される空気の量を調整する温風調整ドア33が配置されている。
【0041】
ユニットケース30には、デフ吹出用開口35と、ベント吹出用開口36と、フット吹出用開口37とが設けられている。
【0042】
デフ吹出用開口35及びベント吹出用開口36はユニットケース30の上部に位置し、フット吹出用開口37はユニットケース30の下部に位置している。
【0043】
デフ吹出用開口35、ベント吹出用開口36及びフット吹出用開口37は、それぞれ開閉ドア45,46,47によって開閉される。開閉ドア45,46,47はそれぞれ対称型のバタフライドアである。
【0044】
次に、自動車用空調装置の作動を説明する。
【0045】
フルホット時、冷風調整ドア32が位置32aに回転するとともに、温風調整ドア33が位置33aに回転してヒータコア20の上流側が開放される。
【0046】
このとき、冷風調整ドア32によって冷風通路11の車両上下方向上側領域が遮断されるので、エバポレータ10を通過した全部の空気がヒータコア20に導かれる。
【0047】
ヒータコア20に導かれた空気は加熱される。ヒータコア20で加熱された空気は温風通路21及びエアミックス空間31を通って、例えばフット吹出用開口37から車室側に吹き出される。
【0048】
次に、このフルホット状態から吹出モードをバイレベルモードにする場合を説明する。開閉ドア45,46,47は図1(a)の実線で示す位置に回転する。
【0049】
冷風調整ドア32の開度がα(冷風調整ドア32の開度10〜40%の範囲)の範囲内のとき(図1(a)参照)、冷風通路11のリブ40側は冷風調整ドア32の一端部32bによって遮断状態にあるので、エバポレータ10を通過した空気の一部が冷風調整ドア32の他端部32cを通ってエアミックス空間31へ進む。
【0050】
冷風調整ドア32の開度がαを越えβ(冷風調整ドア32の開度10〜60%の範囲)を越えるまでは(図1(a)参照)、冷風通路11のリブ40側も開放されるので、エバポレータ10を通過した冷風の一部が冷風調整ドア32の両端部側を通ってエアミックス空間31へ進む。
【0051】
冷風調整ドア32の開度がβ以上になると、冷風調整ドア32の両端部側がリブ40,41,42から離れるので、通路面積が増える。
【0052】
一方、エバポレータ10を通過した冷風の残りはヒータコア20を通ってエアミックス空間31へ進む。
【0053】
エアミックス空間31で合流した空気(冷風と温風)は、エアミックス空間31で混ざり合い、ベント吹出用開口36及びフット吹出用開口37を通じて車室側に吹き出される。
【0054】
この実施形態によれば、冷風調整ドア32の両端近傍にリブ40,41,42を設けたので、フルホット状態から若干冷風調整ドアを開けたとき、エアミックス空間31で冷風と温風とが混ざり合い、バイレベルモード時、ベント吹出用開口36から吹き出される冷風とフット吹出用開口37から吹き出される温風との適正な温度差を確保できるとともに、ベント吹出用開口36から吹き出される冷風の風量低下を防止して温度調節性を向上させることができる。
【0055】
また、デフフットモード時においても、バイレベルモード時と同様の効果を奏することができる。
【0056】
図2(a)はこの発明の第2実施形態に係る自動車用空調装置の縦断面図、図2(b)は図2(a)の2b−2b線に沿った断面図であり、第1実施形態と同一部分には同一符合を付してその説明を省略する。
【0057】
この実施形態はユニットケース60の両側面を外側に膨らませることによって、温風通路51及びエアミックス空間61の通路の幅方向寸法を冷風通路11の通路の幅方向寸法より大きくした点で第1実施形態と異なる。
【0058】
この実施形態によれば、第1実施形態と同様の効果を奏することができるとともに、冷風通路が絞られないので、風量の低下や騒音の発生が防止される。
【0059】
なお、本実施形態は通風方向が車両左右方向の場合のみならず、車両前後方向の場合についても同様の効果が得られる。
【0060】
【発明の効果】
以上に説明したように請求項1記載の発明の自動車用空調装置によれば、バイレベルモード時、ベント吹出用開口から吹き出される冷風とフット吹出用開口から吹き出される温風との適正な温度差を確保できるとともに、ベント吹出用開口から吹き出される冷風の風量低下を防止して温度調節性を向上させることができる。また、デフフットモード時においても、バイレベルモード時と同様の効果を奏することができる。
【0061】
請求項2の発明の自動車用空気調和装置によれば、送風量の低下や騒音の発生を防止することができる。
【図面の簡単な説明】
【図1】図1(a)はこの発明の第1実施形態に係る自動車用空調装置の縦断面図、図1(b)は図1(a)の1b−1b線に沿った断面図である。
【図2】図2(a)はこの発明の第2実施形態に係る自動車用空調装置の縦断面図、図2(b)は図2(a)の2b−2b線に沿った断面図である。
【図3】図3は従来の自動車用空調装置の縦断面図である。
【符号の説明】
10 エバポレータ(冷却用熱交換器)
11 冷風通路
20 ヒータコア(加熱用熱交換器)
21 温風通路
30 ユニットケース
31 エアミックス空間
32 冷風調整ドア
33 温風調整ドア
40,41,42 リブ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automotive air conditioner, and more particularly to an automotive air conditioner having a hot air door and a cold air door.
[0002]
[Prior art]
FIG. 3 is a longitudinal sectional view of a conventional automobile air conditioner.
[0003]
This automotive air conditioner includes an evaporator 110, a heater core 120, and a unit case 130.
[0004]
The evaporator 110 and the heater core 120 are accommodated in the unit case 130 from the upstream side to the downstream side.
[0005]
The evaporator 110 cools the air taken in by a blower (not shown).
[0006]
The heater core 120 heats the air from the evaporator 110.
[0007]
In the unit case 130, a cold air passage 111 in which air that has passed through the evaporator 110 flows from the upstream side to the downstream side in the ventilation direction, and a hot air passage 121 in which the air that has passed through the heater core 120 flows from the lower side in the vehicle vertical direction to the upper side, An air mix space 131 in which the air downstream of the cold air passage 111 and the air downstream of the hot air passage 121 are mixed is formed.
[0008]
A cold air adjustment door 132 that adjusts the amount of air passing through the cold air passage 111 is disposed above the heater core 120 in the vehicle vertical direction. The cold air adjusting door 132 is a butterfly door.
[0009]
A warm air adjustment door 133 that adjusts the amount of air heated by the heater core 120 is disposed upstream of the heater core 120.
[0010]
In the unit case 130, an opening / closing door 145 for opening / closing the differential blowing opening 135, an opening / closing door 146 for opening / closing the vent blowing opening 136, and an opening / closing door 147 for opening / closing the foot blowing opening 137 are provided. .
[0011]
The differential outlet opening 135 and the vent outlet opening 136 are provided in the upper part of the unit case 130, and the foot outlet opening 137 is provided in the lower part of the unit case 130.
[0012]
The air introduced into the unit case 130 passes through the evaporator 110. Part of the air that has passed through the evaporator 110 travels to the air mix space 131 through the vehicle vertical direction upper region of the cold air passage 111. As the air passes through the evaporator 110, it is cooled.
[0013]
The remainder of the air that has passed through the evaporator 110 travels to the heater core 120 through the lower region of the cold air passage 111 in the vehicle vertical direction. The air that has passed through the heater core 120 goes to the air mix space 131 through the warm air passage 121. As the air passes through the heater core 120, it is heated.
[0014]
[Problems to be solved by the invention]
By the way, in the bi-level mode, the vent blowing opening 136 and the foot blowing opening 137 are opened.
[0015]
At this time, there is a temperature difference (for example, 15 to 25 ° C.) between the air blown from the vent blow opening 136 and the air blown from the foot blow opening 137, that is, from the vent blow opening 136. It is desirable that cold air is blown out from the foot blowing opening 137, respectively.
[0016]
However, since the downstream area of the cold air passage 111 is located above the hot air passage 121 in the vehicle vertical direction, when the cold air adjustment door 132 is slightly opened from the full hot state (referred to as an intermediate temperature adjustment region), the cold air and the hot air Are not sufficiently mixed in the air mix space 131, air CA having a temperature lower than the desired temperature is blown from the vent blowing opening 136, and air HA having a temperature higher than the desired temperature is blown from the foot blowing opening 137. End up.
[0017]
For example, in the bi-level mode, the temperature difference between the air blown out from the vent blow opening 136 and the air blown out from the foot blow opening 137 is too great, which gives the passenger discomfort.
[0018]
The same problem occurs in the intermediate temperature control region even in the differential foot mode.
[0019]
The present invention has been made in view of such circumstances, and an object thereof is to provide an automotive air conditioner having improved temperature controllability in the bi-level mode or the like.
[0020]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention described in claim 1 includes a cooling heat exchanger for cooling air from a blower, a heating heat exchanger for heating air from the cooling heat exchanger, and A unit case to be accommodated, a cool air passage in which air that has passed through the cooling heat exchanger flows from the upstream side to the downstream side in the ventilation direction, and an upper side in the vehicle vertical direction of the heating heat exchanger; A cold air adjusting door that adjusts the amount of air passing therethrough, a hot air adjusting door that is arranged upstream of the heating heat exchanger and that adjusts the amount of air heated by the heating heat exchanger, and for the heating An automotive vehicle comprising a hot air passage through which air passing through a heat exchanger flows from the lower side to the upper side in the vehicle vertical direction, and an air mix space in which the air downstream of the cold air passage and the air downstream of the hot air passage are mixed In the air conditioner, the cold air Sei door is butterfly door, its near both ends of the cool air adjusting door, each of the ribs for closing a portion of the cool air passage is provided in a circular arc shape along the rotational trajectory both ends of the cool air adjusting door draw, One of the ribs is provided over the entire width of the unit case, and is controlled to open and close with one end of the cold air adjusting door. Each of the both end wall surfaces is provided with a length obtained by adding the two widths to be smaller than the width of the unit case, and is controlled to be opened and closed by the other end of the cold air adjusting door .
[0021]
In the process of opening the butterfly valve ( cold air adjustment door) from the full hot state, when it is opened slightly , one end of the cold air adjustment door closes the cold air passage with one rib, but the other end opens the cold air passage The cold air begins to flow through the ribs, and the cold air that has passed through the cold air passage that is partially blocked is mixed with part of the air in the hot air passage in the air mix space.
[0022]
According to a second aspect of the present invention, in the automotive air conditioner according to the first aspect, the dimensions of the warm air passage and the passage of the air mix space in the width direction are increased by inflating the side surface of the unit case to the outside. It is characterized by being larger than the dimension in the width direction of the cold air passage.
[0023]
The cold air passage is not restricted, and the ventilation resistance does not increase at full cool.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0025]
FIG. 1A is a longitudinal sectional view of an automotive air conditioner according to the first embodiment of the present invention, and FIG. 1B is a sectional view taken along line 1b-1b of FIG.
[0026]
This automotive air conditioner includes an evaporator 10, a heater core 20, and a unit case 30.
[0027]
An evaporator (cooling heat exchanger) 10 and a heater core (heating heat exchanger) 20 are accommodated in the unit case 30 from the upstream side to the downstream side.
[0028]
The evaporator 10 is arranged substantially vertically so as to block all the passages in the unit case 30 and cools the air taken in by a blower (not shown).
[0029]
The heater core 20 is disposed so as to block the lower half of the passage in the unit case 30 and heats the air from the evaporator 10.
[0030]
Inside the unit case 30, a cold air passage 11 in which air that has passed through the evaporator 10 flows from the upstream side to the downstream side in the ventilation direction, and a hot air passage 21 in which the air that has passed through the heater core 20 flows from the lower side in the vehicle vertical direction to the upper side An air mix space 31 in which the air downstream of the cold air passage 11 and the air downstream of the hot air passage 21 are mixed is formed.
[0031]
The downstream area of the cold air passage 11 is located above the hot air passage 21 in the vehicle vertical direction.
[0032]
A cold air adjusting door 32 that adjusts the amount of air passing through the cold air passage 11 is disposed above the heater core 20 in the vehicle vertical direction. The cold air adjusting door 32 is a symmetric butterfly door.
[0033]
In the vicinity of both ends of the cold air adjusting door 32, ribs 40, 41, and 42 that block a part of the cold air passage 11 are provided. The ribs 40, 41, 42 are formed in a substantially arc shape along a locus drawn by both ends of the cold air adjusting door 32.
[0034]
The rib 40 is formed over the whole width direction of the unit case 30 (refer FIG.1 (b)).
[0035]
The rib 40 closes a part of the cold air passage 11 at the upper end side (one end portion 32 b) of the cold air adjusting door 32 within the range of 10 to 40% of the opening degree of the cold air adjusting door 32.
[0036]
The ribs 41 and 42 are on the lower end side (the other end portion 32 c ) of the cold air adjusting door 32 and block a part of the cold air passage 11 within a range of 10 to 60% of the opening degree of the cold air adjusting door 32.
[0037]
The ribs 41 and 42 are respectively formed on both end wall surfaces in the width direction of the unit case 30.
[0038]
When the width of the rib 41 is D1, the width of the rib 42 is D2, and the width of the unit case 30 is D3, there is a relationship of the expression (1) between D1, D2, and D3.
[0039]
(D1 + D2) /D3=0.1 to 0.4 (1)
[0040]
A warm air adjusting door 33 for adjusting the amount of air heated by the heater core 20 is disposed upstream of the heater core 20.
[0041]
The unit case 30 is provided with a differential blowing opening 35, a vent blowing opening 36, and a foot blowing opening 37.
[0042]
The differential blowing opening 35 and the vent blowing opening 36 are located in the upper part of the unit case 30, and the foot blowing opening 37 is located in the lower part of the unit case 30.
[0043]
The differential blowing opening 35, the vent blowing opening 36, and the foot blowing opening 37 are opened and closed by open / close doors 45, 46, and 47, respectively. The open / close doors 45, 46, 47 are symmetrical butterfly doors.
[0044]
Next, the operation of the automotive air conditioner will be described.
[0045]
At the time of full hot, the cold air adjusting door 32 rotates to the position 32a and the hot air adjusting door 33 rotates to the position 33a so that the upstream side of the heater core 20 is opened.
[0046]
At this time, since the cold wind adjusting door 32 blocks the upper region of the cold wind passage 11 in the vehicle vertical direction, all the air that has passed through the evaporator 10 is guided to the heater core 20.
[0047]
The air guided to the heater core 20 is heated. The air heated by the heater core 20 passes through the warm air passage 21 and the air mix space 31, and is blown out from, for example, the foot blowing opening 37 to the vehicle compartment side.
[0048]
Next, the case where the blowing mode is changed from the full hot state to the bi-level mode will be described. The open / close doors 45, 46, and 47 rotate to positions indicated by solid lines in FIG.
[0049]
When the opening degree of the cold air adjustment door 32 is within the range of α (the range of the opening degree of the cold air adjustment door 32 is 10 to 40%) (see FIG. 1A), the rib 40 side of the cold air passage 11 is on the cold air adjustment door 32. Since one end portion 32b of the cooling air is in a blocked state, a part of the air that has passed through the evaporator 10 proceeds to the air mix space 31 through the other end portion 32c of the cold air adjusting door 32.
[0050]
Until the opening degree of the cold air adjusting door 32 exceeds α and exceeds β (the range of the opening degree of the cold air adjusting door 32 is 10 to 60%) (see FIG. 1A), the rib 40 side of the cold air passage 11 is also opened. Therefore, a part of the cool air that has passed through the evaporator 10 proceeds to the air mix space 31 through both ends of the cool air adjusting door 32.
[0051]
When the opening degree of the cold air adjusting door 32 is equal to or greater than β, both end portions of the cold air adjusting door 32 are separated from the ribs 40, 41, and 42, so that the passage area increases.
[0052]
On the other hand, the remainder of the cold air that has passed through the evaporator 10 proceeds to the air mix space 31 through the heater core 20.
[0053]
The air (cold air and warm air) merged in the air mix space 31 is mixed in the air mix space 31 and blown out to the vehicle compartment side through the vent blow opening 36 and the foot blow opening 37.
[0054]
According to this embodiment, the ribs 40, 41, 42 are provided in the vicinity of both ends of the cold air adjustment door 32. Therefore, when the cold air adjustment door is slightly opened from the full hot state, the cold air and the hot air are generated in the air mix space 31. In the mixed and bi-level mode, an appropriate temperature difference between the cold air blown from the vent blow opening 36 and the warm air blown from the foot blow opening 37 can be secured, and the air is blown from the vent blow opening 36. The temperature controllability can be improved by preventing a decrease in the amount of cold air.
[0055]
Also, in the differential foot mode, the same effects as in the bi-level mode can be achieved.
[0056]
2A is a longitudinal sectional view of an automotive air conditioner according to a second embodiment of the present invention, FIG. 2B is a sectional view taken along line 2b-2b in FIG. The same parts as those in the embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0057]
In this embodiment, both side surfaces of the unit case 60 are inflated to the outside so that the width direction dimensions of the hot air passage 51 and the air mix space 61 are larger than the width direction dimensions of the cool air passage 11. Different from the embodiment.
[0058]
According to this embodiment, the same effect as that of the first embodiment can be obtained, and since the cool air passage is not restricted, the reduction of the air volume and the generation of noise are prevented.
[0059]
In the present embodiment, the same effect can be obtained not only when the ventilation direction is the left-right direction of the vehicle but also when it is the front-rear direction of the vehicle.
[0060]
【The invention's effect】
As described above, according to the automotive air conditioner of the first aspect of the present invention, in the bi-level mode, the cool air blown from the vent blow opening and the warm air blown from the foot blow opening are appropriate. A temperature difference can be secured, and the temperature controllability can be improved by preventing a decrease in the amount of cold air blown from the vent blowout opening. Also, in the differential foot mode, the same effects as in the bi-level mode can be achieved.
[0061]
According to the automotive air conditioner of the second aspect of the invention, it is possible to prevent a reduction in the amount of blown air and generation of noise.
[Brief description of the drawings]
FIG. 1 (a) is a longitudinal sectional view of an automotive air conditioner according to a first embodiment of the present invention, and FIG. 1 (b) is a sectional view taken along line 1b-1b of FIG. 1 (a). is there.
2 (a) is a longitudinal sectional view of an automotive air conditioner according to a second embodiment of the present invention, and FIG. 2 (b) is a sectional view taken along line 2b-2b of FIG. 2 (a). is there.
FIG. 3 is a longitudinal sectional view of a conventional automobile air conditioner.
[Explanation of symbols]
10 Evaporator (cooling heat exchanger)
11 Cold air passage 20 Heater core (heat exchanger for heating)
21 Hot air passage 30 Unit case 31 Air mix space 32 Cold air adjusting door 33 Hot air adjusting door 40, 41, 42 Rib

Claims (2)

ブロアからの空気を冷却する冷却用熱交換器と、この冷却用熱交換器からの空気を加熱する加熱用熱交換器と、これらを収容するユニットケースと、前記冷却用熱交換器を通過した空気が通風方向の上流側から下流側へ流れる冷風通路と、前記加熱用熱交換器の車両上下方向上側に配置され、前記冷風通路を通過する空気の量を調整する冷風調整ドアと、前記加熱用熱交換器の上流に配置され、前記加熱用熱交換器で加熱される空気の量を調整する温風調整ドアと、前記加熱用熱交換器を通過した空気が車両上下方向下側から上側へ流れる温風通路と、前記冷風通路下流の空気と前記温風通路下流の空気とが混ざり合うエアミックス空間とを備えている自動車用空調装置において、前記冷風調整ドアがバタフライドアであり、
その冷風調整ドアの両端部近傍には、前記冷風通路の一部を塞ぐそれぞれのリブが冷風調整ドアの両端部が描く回転軌跡に沿って円弧状に設けられ、その一方のリブは、ユニットケースの幅方向の全体に亘って設けられて、前記冷風調整ドアの一端部とで開閉制御され、また他方のリブは二つより成り、ユニットケースの幅方向の両端壁面にそれぞれ設けられ、その二つの幅を加えた長さがユニットケースの幅よりも小さく形成され、前記冷風調整ドアの他端部とで開閉制御されることを特徴とする自動車用空調装置。
A cooling heat exchanger that cools the air from the blower, a heating heat exchanger that heats the air from the cooling heat exchanger, a unit case that houses these, and the cooling heat exchanger that has passed A cold air passage through which air flows from the upstream side to the downstream side in the ventilation direction, a cold air adjustment door that is disposed above the heating heat exchanger in the vehicle vertical direction and adjusts the amount of air passing through the cold air passage, and the heating A hot air adjusting door that is arranged upstream of the heating heat exchanger and adjusts the amount of air heated by the heating heat exchanger, and the air that has passed through the heating heat exchanger is from the lower side in the vehicle vertical direction to the upper side In an automotive air conditioner comprising a hot air passage that flows to and an air mix space in which the air downstream of the cold air passage and the air downstream of the hot air passage are mixed, the cold air adjusting door is a butterfly door,
In the vicinity of both ends of the cold air adjusting door, each rib for closing a part of the cold air passage is provided in an arc shape along a rotation locus drawn by both ends of the cold air adjusting door, and one rib of the rib is provided in the unit case. The cooling rib is controlled to open and close at one end of the cold air adjusting door, and the other rib is composed of two, which are respectively provided on both end wall surfaces in the width direction of the unit case. An automotive air conditioner characterized in that a length including two widths is formed to be smaller than a width of the unit case and is controlled to be opened and closed with the other end of the cold air adjusting door .
前記ユニットケースの側面を外側に膨らませることによって、前記温風通路及び前記エアミックス空間の通路の幅方向寸法を前記冷風通路の通路の幅方向寸法より大きくしたことを特徴とする請求項1に記載の自動車用空調装置。 The width direction dimension of the passage of the warm air passage and the air mix space is made larger than the width direction dimension of the passage of the cool air passage by inflating the side surface of the unit case to the outside. The automotive air conditioner described.
JP36372599A 1999-12-22 1999-12-22 Automotive air conditioner Expired - Fee Related JP4385174B2 (en)

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Publication number Priority date Publication date Assignee Title
KR100994721B1 (en) 2003-09-03 2010-11-16 한라공조주식회사 Air conditioner for vehicle
JP4687435B2 (en) * 2005-12-12 2011-05-25 株式会社デンソー Air conditioner for vehicles
US8376037B2 (en) * 2009-07-10 2013-02-19 Keihin Corporation Vehicular air conditioning apparatus and temperature control method performed thereby

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