JPS5937244B2 - Vehicle air conditioner - Google Patents

Description

【発明の詳細な説明】 本発明は車両用空気調和装置に関する。[Detailed description of the invention] The present invention relates to a vehicle air conditioner.

この種の空気調和装置において頭寒足熱を意図したもの
は知られているが、車室内上方への温風と同下方への温
風の温度差を変えるためには複数のダンパによる制御を
必要とし操作が面倒である。This type of air conditioner is known to be designed to keep the head cold and feet warm, but in order to change the temperature difference between the hot air flowing upward into the vehicle interior and the warm air flowing downward, control using multiple dampers is required. is troublesome.

しかも同時に風量も変つてしまう不具合を生じ、適切な
温度差を得ることが困難である。本発明は、２個のエヤ
ミツクスダンパの操作によつて前記上下方の温風の温度
差が変えら、れ、しかもその際上下の風量バランスは殆
ど変らない空気調和装置をコンパクトに構成することを
目的とする。Moreover, the problem arises that the air volume also changes at the same time, making it difficult to obtain an appropriate temperature difference. The present invention provides a compact air conditioner in which the temperature difference between the upper and lower hot air is changed by operating two air-mix dampers, and at the same time, the air volume balance between the upper and lower sides hardly changes. The purpose is to

先ず従来例を第４図について説明する。First, a conventional example will be explained with reference to FIG.

車室外（外気）または車室内（内気）の空気（以下冷風
という）が単独または混合して機箱内にその側方導入口
１ａから送り込まれ、振り分けダンパ８ａで冷風の一部
は加熱器７ａに導かれ熱風となつて混合室６ａの下部に
至り、一部はダンパ８ａの上方を通つて混合室６ａの上
部に導かれる。しかし装置の大きさに制約があるため一
般に混合室６ａは小さいから、十分混合されず比較的上
方が冷たく下方が暖かい状態にある。従つて車室内上方
への吐出口２ａ、３ａへは比較的冷風が、車室内下方へ
の吐出口４ａ、５ａには比較的温風が導かれ、その上下
方の温風の温度差は比較的大きく、しかも形状等の関係
で略一定してしまう。この温度差を変えるにはダンパ８
ａによる冷風振分け加減のほか、上方吐出口２ａ、３ａ
の振分けダンパ９ａ）下方吐出口４ａ、５ａへの流量制
御ダンパ１０ａ、あるいはさらに追加ダンパを用いて或
程度変えることができるが、同時に各吐出口２ａ〜５ａ
から出る空気量割合も変わつてしまう不具合を生じ、し
かも適切な温度差を得ることは困難であつた。本発明は
上記の問題を解消することを目的として改良し、前記特
許請求の範囲記載の溝成としたものである。図面に示す
実施例について具体的に説明すると、空気調和装置機箱
の一端部側面に略長方形の冷風導入口１を縦長に設ける
。Air outside the vehicle (outside air) or inside the vehicle (inside air) (hereinafter referred to as cold air) is sent into the machine box from the side inlet 1a, singly or in a mixture, and a part of the cold air is sent to the heater 7a by the distribution damper 8a. The hot air is guided to the lower part of the mixing chamber 6a, and a part of the hot air is guided to the upper part of the mixing chamber 6a through the upper part of the damper 8a. However, due to restrictions on the size of the device, the mixing chamber 6a is generally small, so the mixture is not sufficiently mixed, and the upper part is relatively cold and the lower part is warm. Therefore, relatively cold air is guided to the discharge ports 2a and 3a toward the upper side of the vehicle interior, and relatively warm air is guided to the discharge ports 4a and 5a toward the lower side of the vehicle interior, and the temperature difference between the upper and lower warm air is comparatively large. The target is large, and it remains almost constant due to the shape etc. To change this temperature difference, damper 8
In addition to adjusting the distribution of cold air by a, upper discharge ports 2a and 3a
The distribution damper 9a) can be changed to some extent by using a damper 10a that controls the flow rate to the lower discharge ports 4a, 5a, or an additional damper, but at the same time the distribution of the flow rate to the lower discharge ports 4a to 5a
This caused a problem in that the ratio of the amount of air coming out of the tank also changed, and it was difficult to obtain an appropriate temperature difference. The present invention has been improved for the purpose of solving the above problems, and has the structure described in the claims. To specifically describe the embodiment shown in the drawings, a substantially rectangular cold air inlet 1 is vertically provided on the side surface of one end of an air conditioner box.

７はその導入口１の内側辺１Ａに近接して機箱内に縦長
に配置した加熱器で、その加熱器７の上下に冷風通路１
１，１２を形成し、上記通路１１への冷風量が多いよう
に導入口１の上部１Ｂを通路１１側に片寄らせる。7 is a heater arranged vertically in the machine box close to the inner side 1A of the inlet 1, and there are cold air passages 1 above and below the heater 7.
1 and 12, and the upper part 1B of the inlet 1 is biased toward the passage 11 so that a large amount of cold air flows into the passage 11.

その通路１１，１２にそれぞれ振分けダンパ１３，１４
を設け、その各上下の通路１１，１２と加熱器７の路上
下半部への冷風の流量の調節を加熱器７の冷風流人側で
行う。下部通路１２は案内板１９で加熱器７の略下半部
の後方まで略逆Ｌ形に延長させ、その上方の上部通路１
１の延長上の機箱上面の下方に形成される空間を混合室
６とする。その混合室６の後方斜上部の機箱面に車室内
上部に温風を送る吐出口２，３を設ける。２０は前記案
内板１９に添つて下向きに略逆Ｌ形に通路１２の下に形
成した通路で、車室内下方へ温風を送る吐出口４，５に
連通させる。Distributing dampers 13 and 14 to the passages 11 and 12, respectively
are provided, and the flow rate of cold air to the upper and lower passages 11, 12 and the lower half of the heater 7 on the road is adjusted on the cold air flower side of the heater 7. The lower passage 12 is extended in an approximately inverted L shape to the rear of approximately the lower half of the heater 7 by a guide plate 19, and the upper passage 1 above it is extended to the rear of approximately the lower half of the heater 7.
A space formed below the upper surface of the machine box as an extension of 1 is defined as a mixing chamber 6. Discharge ports 2 and 3 for sending warm air to the upper part of the vehicle interior are provided on the surface of the machine box at the rear inclined upper part of the mixing chamber 6. A passage 20 is formed below the passage 12 in a downward substantially inverted L shape along the guide plate 19, and communicates with the discharge ports 4 and 5 for sending hot air downward into the vehicle interior.

図示例のものは、導入口１に送風ダクト１５を接続して
図に省略した送風機により送られてきた外気又は内気あ
るいはその混合気（冷風）を導入する。In the illustrated example, a blower duct 15 is connected to the inlet 1 to introduce outside air, inside air, or a mixture thereof (cold air) sent by a blower not shown in the figure.

或いはエバポレータ内の冷却器で冷却された冷風を導入
する。振分けダンパ１３，１４はそれぞれ軸１３ａ，１
４ａを中心に回動可能で、最外側（第１図Ｈ位置）に回
動したとき上下各通路１１，１２を閉じ、最内側（第１
図Ｃ位置）に回動したとき加熱器７を全閉するように構
成されている。Alternatively, cold air cooled by a cooler inside the evaporator is introduced. The distribution dampers 13 and 14 are connected to shafts 13a and 1, respectively.
4a, and when it rotates to the outermost side (position H in Figure 1), it closes the upper and lower passages 11 and 12, and closes the upper and lower passages 11 and 12.
The heater 7 is configured to be fully closed when the heater 7 is rotated to the position (C position in the figure).

この両振分けダンパ１３，１４は手動或いは自動的に一
定の関係で連動するようにしてもよく、又各々独立に制
御するようにしてもよい。上方の吐出口２，３はそれぞ
れ図に省略したインストルメントパネルのデフロスタ吹
出口と乗員の上半身方向への吹出口に連通排風する。The two distribution dampers 13 and 14 may be manually or automatically linked in a fixed relationship, or may be controlled independently. The upper discharge ports 2 and 3 communicate with and exhaust air to a defroster air outlet of an instrument panel and an air outlet toward the upper body of the occupant, which are not shown in the figure, respectively.

１８は軸１８ａを中心に回動するロータリ式ダンパで、
吐出口２，３への通路１６，１７を開閉して両吐出口２
，３から出る温風量の割合を制御する。18 is a rotary damper that rotates around a shaft 18a;
Opening and closing the passages 16 and 17 to the discharge ports 2 and 3
, 3 controls the rate of hot air volume.

下方の吐出口４，５は乗員の足元付近の車室内下方に開
口排風する。２１は軸２１ａを中心に回動するダンパで
、通路２０を開閉して吐出口４，５から出る温風量を制
御する。The lower discharge ports 4 and 5 open to exhaust air downward into the vehicle interior near the occupant's feet. A damper 21 rotates around a shaft 21a, which opens and closes the passage 20 to control the amount of hot air coming out of the discharge ports 4 and 5.

上記の構成であるから混合室６には、加熱器７を通つた
熱風とその上下の通路１１，１２を通つた冷風とが三層
伏態に入り込み、立上つた案内板１９で通路１２からの
冷風、加熱器７の下半部からの熱風が上向きに導かれ、
上部通路１１からの冷風、加熱器７の上半部からの熱風
とよく混合して温風となるものであるが、上部通路１１
の冷風量が下部通路１２の冷風量よりも常に多く、かつ
その冷風の一部は機箱面に沿つて上部吐出口２，３に向
かう。With the above configuration, the hot air that has passed through the heater 7 and the cold air that has passed through the upper and lower passages 11 and 12 enter the mixing chamber 6 in a three-layer subterranean state, and are separated from the passage 12 by the raised guide plate 19. The cold air from the lower half of the heater 7 and the hot air from the lower half of the heater 7 are guided upward,
The cold air from the upper passage 11 mixes well with the hot air from the upper half of the heater 7 to become warm air.
The amount of cold air in the lower passage 12 is always larger than the amount of cold air in the lower passage 12, and a part of the cold air flows toward the upper discharge ports 2 and 3 along the machine box surface.

従つて車室内上部へ排出される温風が車室内下部への温
風よりも常に温度が低いことになる。従つて第３図ａの
下グラフのように両ダンパ１３，１４を、第１図の加熱
器閉位置Ｃから、上下部閉位置Ｈに略同じ角度で回動さ
せると、同図上グラフのように上下部温風の温度差は余
り変らないで共に温度が上る。Therefore, the temperature of the warm air discharged to the upper part of the vehicle interior is always lower than that of the warm air discharged to the lower part of the vehicle interior. Therefore, when both dampers 13 and 14 are rotated at approximately the same angle from the heater closed position C in FIG. 1 to the upper and lower closed positions H as shown in the lower graph of FIG. As shown, the temperature difference between the upper and lower hot air does not change much, but the temperature of both rises.

また第３図ｂ下グラフのように上部ダンパ１３に比べて
下部ダンパ１４を下部通路閉側Ｈに大きく回すと、下部
通路１２を通る冷風量が少なくなりその減少分は加熱器
７により加熱されるので同図上グラフのように上下部温
風の温度差は大きくなる。Further, as shown in the lower graph of FIG. 3b, when the lower damper 14 is turned to the lower passage closing side H more than the upper damper 13, the amount of cold air passing through the lower passage 12 decreases, and the decreased amount is heated by the heater 7. Therefore, as shown in the upper graph of the figure, the temperature difference between the upper and lower warm air becomes large.

第３図ｃは上記と反対に下部ダンパ１４を上部ダンパ１
３に比べて第１図Ｃ方向即ち加熱器閉側に位置させて上
下部温風の温度差をなくした例。In Fig. 3c, the lower damper 14 is replaced with the upper damper 1, contrary to the above.
3, this is an example in which the temperature difference between the upper and lower hot air is eliminated by locating the heater in the C direction of FIG. 1, that is, on the closed side of the heater.

第３図ｄは上下温風の温度差を略一定に保つて共に温度
を上げる場合のダンパ１３，１４の制御伏態を表わす。
上記のような種々の調整に当りダンパ１３，１４の位置
が変つても、上下温風の風量割合は殆ど変らない。FIG. 3d shows the control state of the dampers 13 and 14 when the temperature difference between the upper and lower hot air is kept approximately constant and the temperature of both is raised.
Even if the positions of the dampers 13 and 14 change during the various adjustments described above, the ratio of the upper and lower warm air volumes hardly changes.

なお上部ダンパ１３は主に上方吐出口２，３への温風、
下部ダンパ１４は主に下方吐出口４への温風の温度を制
御することができるから各別制御がよいが、連動的に制
御させることもできる。吐出口２，３、４，５の各温風
量割合調節はダンパ１８，２１で行う。本発明は、上記
のように上下方温風の温度差を風量バランスを変えるこ
となく行い得る点で前記公知のものに比べて優れている
。The upper damper 13 mainly blows hot air to the upper discharge ports 2 and 3.
Since the lower damper 14 can mainly control the temperature of the hot air flowing to the lower discharge port 4, it is preferable to control each of them separately, but they can also be controlled in conjunction with each other. Adjustment of the hot air volume ratio of each of the discharge ports 2, 3, 4, and 5 is performed by dampers 18 and 21. The present invention is superior to the above-mentioned known systems in that it is possible to adjust the temperature difference between the upper and lower hot air without changing the air volume balance as described above.

上下２枚のダンパのみで調節が行われるから構成操作が
簡単である。また公知例の１枚ダンパの約１／２の長さ
でよいから、風圧によるモーメントが小さく操作性がよ
い。特に上下方向に同時に連動させるようにすると両ダ
ンパ１３，１４の重量は相殺され変動が少なく操作機構
の構成上有利である。Since adjustment is performed using only two dampers, the upper and lower dampers, the configuration is easy to operate. Furthermore, since the damper only needs to be about 1/2 the length of the known one-piece damper, the moment due to wind pressure is small and operability is good. In particular, if the dampers 13 and 14 are moved simultaneously in the vertical direction, the weights of both dampers 13 and 14 are offset, resulting in less fluctuation, which is advantageous in terms of the structure of the operating mechanism.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明空気調和装置の縦断面図、第２図はその
斜視図、第３図は上下部ダンパの開き量とそれによる上
方・下方の吐出口から出る温風の温度との関係を示すグ
ラフ、調和装置の縦断面図である。 １５は送風ダクト、１８， 第４図は従来の空気 ２１はダンパ。Fig. 1 is a longitudinal sectional view of the air conditioner of the present invention, Fig. 2 is a perspective view thereof, and Fig. 3 is the relationship between the opening amount of the upper and lower dampers and the temperature of the warm air discharged from the upper and lower discharge ports. FIG. 15 is a ventilation duct, 18, and in Fig. 4, the conventional air 21 is a damper.

Claims (1)

【特許請求の範囲】[Claims] １ 機箱の一端部側面に略長方形の空気導入口１を縦長
に設け、その導入口の内側辺に近接して加熱器７を縦長
に機箱内に配設し、その加熱器７の上方と下方に導入口
１から流入した空気（冷風）の通路１１、１２を設け、
上部通路１１への冷風量が下部通路１２への冷風量より
も多くなるように導入口１を片寄らせ、その上部通路１
１と加熱器７の冷風流入側の略上半部との間に回動する
上部ダンパ１３および前記下部通路１２と加熱器７の冷
風流入側下半部との間に回動する下部ダンパ１４を設け
、下部通路１２を案内板１９により加熱器７の略下半部
の後方まで上向きに逆Ｌ形に延長させ、その上方の上部
通路１１の延長上の機箱上面の下方に形成される空間６
を混合室とし、その混合室の後方斜上部に車室内上部に
温風を送る吐出口２、３を設け、前記案内板１９に添つ
て下向きに通路２０を逆Ｌ形に形成して車室内下方への
吐出口４、５に連通させたことを特徴とする車両用空気
調和装置。1. A substantially rectangular air inlet 1 is vertically provided on the side surface of one end of the machine box, and a heater 7 is vertically disposed in the machine box near the inner side of the inlet, above and below the heater 7. are provided with passages 11 and 12 for air (cold air) flowing in from the inlet 1,
The inlet 1 is shifted to one side so that the amount of cold air flowing into the upper passage 11 is larger than the amount of cold air flowing into the lower passage 12.
1 and substantially the upper half of the cold air inflow side of the heater 7, and a lower damper 14 that rotates between the lower passage 12 and the lower half of the cold air inflow side of the heater 7. The lower passage 12 is extended upward in an inverted L shape to the rear of approximately the lower half of the heater 7 by means of a guide plate 19, and a space is formed below the upper surface of the machine box on the extension of the upper passage 11 above. 6
is a mixing chamber, and discharge ports 2 and 3 are provided at the rear diagonal upper part of the mixing chamber to send hot air to the upper part of the vehicle interior, and a passage 20 is formed downward in an inverted L shape along the guide plate 19 to form a passage 20 in the vehicle interior. An air conditioner for a vehicle, characterized in that the air conditioner is connected to downward discharge ports 4 and 5.