JPH0986152A - Drain water discharge device of air conditioner for vehicle - Google Patents
Drain water discharge device of air conditioner for vehicleInfo
- Publication number
- JPH0986152A JPH0986152A JP7242809A JP24280995A JPH0986152A JP H0986152 A JPH0986152 A JP H0986152A JP 7242809 A JP7242809 A JP 7242809A JP 24280995 A JP24280995 A JP 24280995A JP H0986152 A JPH0986152 A JP H0986152A
- Authority
- JP
- Japan
- Prior art keywords
- drain
- valve
- air
- drain water
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はクーリングユニット
のドレン水排出に伴う車室の負圧化を簡単な構成で防止
し、外気の吸入を防止するとともに、冷暖房能力の損失
を強力に防止できるようにした車両用空調装置のドレン
水排出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of preventing a negative pressure in a vehicle compartment due to drain water discharge of a cooling unit with a simple structure, preventing intake of outside air, and strongly preventing loss of heating and cooling capacity. The drain water discharge device of the vehicle air conditioner.
【０００２】[0002]
【従来の技術】車両用空調装置は、クーリングユニット
の凝縮水を車外に排出するドレン水排出装置を備えてい
るが、例えば吸込型クーリングユニットの運転時には、
空調ケース内が負圧になり、ドレンホースから外気を吸
い込んで、車室の冷房効果が低下してしまう問題があ
る。2. Description of the Related Art A vehicle air conditioner is provided with a drain water discharge device for discharging condensed water of a cooling unit to the outside of the vehicle. For example, when operating a suction type cooling unit,
There is a problem that the inside of the air-conditioning case becomes a negative pressure, sucks the outside air from the drain hose, and reduces the cooling effect of the vehicle interior.
【０００３】このため、例えば実開昭５９ー１２９０１
７号公報では、ドレンホースの内部に軽量な浮玉を収容
し、空調運転時にはブロワによって浮玉を吸い上げ、空
調ケースのドレン孔を閉塞して、外気の吸入を阻止する
一方、ドレン水の生成時には重力によって浮玉を押し下
げ、ドレン水を外部へ排出するようにしている。For this reason, for example, Japanese Utility Model Laid-Open No. 59-12901.
According to Japanese Patent Laid-Open No. 7, a lightweight floating ball is housed inside a drain hose, and the floating ball is sucked up by a blower during air conditioning operation to block the drain hole of the air conditioning case to prevent the intake of outside air while generating drain water. Occasionally, gravity pushes down the float to drain the drain water to the outside.
【０００４】しかし、この従来の装置は、空調運転停止
時に浮玉がストッパ上に落下し、外気がドレンホースに
導かれて空調ダクト内に流入するため、空調運転開始当
初は上記暖気が車室に吹き出され、その分冷房能力が消
費されて、冷房状態を速やかに得られない、という問題
があった。However, in this conventional apparatus, when the air conditioning operation is stopped, the floating balls fall on the stopper, and the outside air is guided to the drain hose and flows into the air conditioning duct. However, there was a problem that the cooling capacity was consumed and the cooling condition could not be obtained promptly.
【０００５】一方、エバポレータの上流側にブロワを配
置する、押し込み型のクーリングユニットにおいては、
空調運転時にドレン水の排出と一緒に空気が排出され、
特に内気循環モードの運転時には、空気の排出分車室が
負圧になって、車両の暖機運転時には排出ガスが車室に
吸入され、乗員がガス中毒になる惧れがあるとともに、
外気が車室に吸入されて冷暖房能力が損失することが懸
念される。On the other hand, in the pushing type cooling unit in which the blower is arranged on the upstream side of the evaporator,
Air is discharged together with drain water during air conditioning operation,
In particular, when operating in the internal air circulation mode, the air discharge minute compartment becomes negative pressure, and during warm-up operation of the vehicle, exhaust gas is drawn into the passenger compartment, which may cause gas poisoning to the occupant.
There is a concern that outside air will be drawn into the passenger compartment and cooling and heating capacity will be lost.
【０００６】[0006]
【発明が解決しようとする課題】本発明はこのような問
題を解決し、クーリングユニットのドレン水排出に伴う
車室の負圧化を簡単な構成で防止し、外気の吸入を防止
するとともに、冷暖房能力の損失を強力に防止し得るよ
うにした車両用空調装置のドレン水排出装置を提供する
ことを目的とする。SUMMARY OF THE INVENTION The present invention solves such a problem and prevents a negative pressure in the vehicle compartment due to drain water discharge of the cooling unit with a simple structure and prevents intake of outside air. An object of the present invention is to provide a drain water discharge device for a vehicle air conditioner, which is capable of strongly preventing the loss of air conditioning capacity.
【０００７】[0007]
【課題を解決するための手段】このため、請求項１の発
明は、ブロワとエバポレータとを空気通路に配置した空
調ダクトにドレン孔を設け、該孔の外側にドレンホース
を装着し、該ホースの内側にドレン水を排出可能な排水
弁を設けた車両用空調装置のドレン水排出装置におい
て、エバポレータより上流側の空気通路にブロワを配置
し、バルブ室の底部に排水口を形成したバルブケースを
装着し、上記バルブ室にドレン水よりも比重の小さな排
水弁を収容し、常時は排水弁を介して排水口を閉塞し、
バルブ室に所定量のドレン水が滞留した際排水口を開口
可能にし、クーリングユニットのドレン水排出に伴う車
室の負圧化を簡単な構成で防止し、外気の吸入を防止す
るとともに、冷暖房能力の損失を強力に防止し得るよう
にしている。Therefore, according to the invention of claim 1, a drain hole is provided in an air conditioning duct in which a blower and an evaporator are arranged in an air passage, and a drain hose is mounted outside the hole, and the hose is attached. In a drain water discharge device of a vehicle air conditioner equipped with a drain valve capable of discharging drain water inside the, a valve case in which a blower is arranged in the air passage upstream of the evaporator and a drain port is formed at the bottom of the valve chamber. The drainage valve of which the specific gravity is smaller than the drain water is housed in the valve chamber, and the drainage port is normally closed via the drainage valve.
When a certain amount of drain water has accumulated in the valve chamber, the drain port can be opened to prevent negative pressure in the vehicle compartment due to drain water discharge of the cooling unit with a simple structure, to prevent intake of outside air, and to cool and heat the room. We are trying to prevent loss of ability.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態を図面
により説明すると、図１乃至図４において１は車室２に
連通する空調ダクトで、その空気通路３の上流側に内外
気取入口４，５が設けられ、これらを切換ドア６で選択
的に開閉可能にしている。内外気取入口４，５の下流側
には、内外気を吸入可能なブロワ７が設けられ、該ブロ
ワ７の下流側にエバポレータ８が設置されている。図
中、９はブロワモータである。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1 to FIG. 4, reference numeral 1 is an air-conditioning duct that communicates with a passenger compartment 2. Entrances 4 and 5 are provided, and these can be selectively opened and closed by a switching door 6. A blower 7 capable of sucking the inside and outside air is provided on the downstream side of the inside and outside air intake ports 4 and 5, and an evaporator 8 is installed on the downstream side of the blower 7. In the figure, 9 is a blower motor.
【０００９】エバポレータ８の直下の空調ダクト１には
ドレン孔１０が設けられ、その外側の口縁部にドレンホ
ース１１の上端部が装着され、その下端が車両の下部フ
レーム１２に設けた通孔１３に挿入されている。A drain hole 10 is provided in the air conditioning duct 1 immediately below the evaporator 8, an upper end portion of a drain hose 11 is attached to an outer edge portion of the drain hole 10, and a lower end thereof is a through hole provided in a lower frame 12 of the vehicle. 13 has been inserted.
【００１０】ドレンホース１１の下端部にはバルブケー
ス１４が差し込まれ、該ケース１４は有底中空の円筒体
で構成され、その内部に矩形断面のバルブ室１５が設け
られている。バルブ室１５には、排水弁であるフロート
バルブ１６が上下動可能に収容され、該バルブ１６は水
よりも比重が小さくなるよう、中空構造または合成樹脂
等の適宜材質で略円錐状に形成され、そのシート面とな
る尖端部を下向きに配置していて、これをバルブ室１５
の底部に形成した排水口１７に係合可能に挿入してい
る。A valve case 14 is inserted into the lower end portion of the drain hose 11, and the case 14 is formed of a hollow cylindrical body having a bottom, and a valve chamber 15 having a rectangular cross section is provided therein. A float valve 16, which is a drain valve, is housed in the valve chamber 15 so as to be movable up and down. The valve 16 is formed into a substantially conical shape with a hollow structure or an appropriate material such as synthetic resin so as to have a smaller specific gravity than water. , The tip of the seat surface is arranged downward, and
It is inserted so as to be engageable with the drain port 17 formed at the bottom of the.
【００１１】フロートバルブ１６の上端部には円筒状の
軸筒部１６ａが設けられ、これがバルブ室１５の内面と
係合可能に配置されていて、バルブ室１５の四隅と軸筒
部１６ａ周面との間に通水路１８を区画形成している。A cylindrical shaft cylinder portion 16a is provided at the upper end of the float valve 16 and is arranged so as to be engageable with the inner surface of the valve chamber 15, and the four corners of the valve chamber 15 and the peripheral surface of the shaft cylinder portion 16a. A water passage 18 is formed between and.
【００１２】図中、１９はバルブケース１４の上部に取
付けたストッパで、軸筒部１６ａと係合してフロートバ
ルブ１６の上動を規制可能にされ、２０はバルブケース
１４の上部周面に形成した係合口、２１はストッパ１９
の周面に突設した係合爪で、前記係合口２０に係合可能
に形成されている。２２はバルブケース１４の周面に突
設したホース抜け止め用凸部、２３はバルブケース１４
の下端部周面に突設したホース係止用フランジ、２４は
エバポレータ８から排出された凝縮水であるドレン水で
ある。In the figure, 19 is a stopper attached to the upper portion of the valve case 14, which engages with the shaft cylinder portion 16a to regulate the upward movement of the float valve 16, and 20 is the upper peripheral surface of the valve case 14. The formed engaging port, 21 is the stopper 19
It is formed so as to be able to engage with the engagement port 20 by an engagement claw provided on the peripheral surface of the. Reference numeral 22 is a convex portion for preventing the hose from coming off, which is provided on the peripheral surface of the valve case 14, and 23 is the valve case
A hose locking flange protrudingly provided on the peripheral surface of the lower end portion of the is a drain water which is the condensed water discharged from the evaporator 8.
【００１３】図５乃至図７は本発明の他の実施の形態を
示し、前述の実施形態と対応する構成部分には同一の符
号を用いている。この実施形態は、フロートバルブ１６
を円錐形の代わりに球形に形成し、ドレン水２４に対す
る浮力の増大を図るとともに、バルブ室１５を矩形断面
から円形断面に代え、その下面に複数のリブ状のバルブ
ガイド２５を突設して、それらの間に通水路１８を区画
形成し、バルブケース１４の薄肉化と軽量化を図るよう
にしている。5 to 7 show another embodiment of the present invention, and the same reference numerals are used for the components corresponding to those of the above-mentioned embodiment. In this embodiment, the float valve 16
Is formed into a spherical shape instead of a conical shape to increase buoyancy with respect to the drain water 24, the valve chamber 15 is changed from a rectangular cross section to a circular cross section, and a plurality of rib-shaped valve guides 25 are provided on the lower surface thereof. The water passage 18 is formed between them so as to make the valve case 14 thinner and lighter.
【００１４】なお、前述の実施形態では何れも、ドレン
ホース１１の下端にバルブケース１４を装着している
が、ドレン孔１０の口縁部を外側に延設し、この延設部
をバルブケース１４とし、該ケース１４の下端にドレン
ホース１１の上端を装着するようにすれば、バルブケー
ス１４を別設する必要がなく、その分構成の簡潔化と部
品点数の低減を図れる。また、フロートバルブ１６の周
面とバルブ室１５を撥水処理すれば、該バルブ１６周面
とバルブ室１５に対するゴミや異物の付着を防止でき、
ゴミ等による排水口１７の噛み込みを防止できる。In each of the above embodiments, the valve case 14 is attached to the lower end of the drain hose 11, but the rim of the drain hole 10 is extended outward, and this extended portion is extended to the valve case. If the upper end of the drain hose 11 is attached to the lower end of the case 14, the valve case 14 does not need to be provided separately, and the structure can be simplified and the number of parts can be reduced accordingly. Further, if the peripheral surface of the float valve 16 and the valve chamber 15 are subjected to water repellent treatment, it is possible to prevent dust and foreign matter from adhering to the peripheral surface of the valve 16 and the valve chamber 15,
It is possible to prevent the drainage port 17 from being caught by dust or the like.
【００１５】このように構成した車両用空調装置のドレ
ン水排出装置は、図１乃至図４に示す実施の形態では、
ドレンホース１１とバルブケース１４、フロートバルブ
１６とストッパ１９とを要し、このうちバルブケース１
４を略中空円筒状に形成しているから、従来のように一
部を膨出成形したものに比べて構成が簡単で、これを容
易に製作することができる。The drain water discharge device of the vehicle air conditioner thus configured has the configuration shown in FIG. 1 to FIG.
The drain hose 11 and the valve case 14, and the float valve 16 and the stopper 19 are required.
Since 4 is formed in a substantially hollow cylindrical shape, the structure is simpler than that of the conventional one in which a part is bulged, and this can be easily manufactured.
【００１６】また、バルブケース１４のバルブ室１５を
矩形断面に形成し、その四隅とフロートバルブ１６との
間に通水路１８を区画形成したから、従来のようにバル
ブ室の内側に区画部材を突設する必要がなく、その分構
成が簡単になる。更に、フロートバルブ１６を円錐形に
形成し、その尖端部の錐面をシート面にしたから、従来
のようなボール弁形のものに比べて、製作が容易で排水
口１７に対する着座性が向上し、バルブ機能の信頼性が
向上する。Further, since the valve chamber 15 of the valve case 14 is formed in a rectangular cross section and the water passages 18 are formed between the four corners of the valve chamber 15 and the float valve 16, partition members are provided inside the valve chamber as in the conventional case. There is no need to project it, and the configuration becomes simpler. Further, since the float valve 16 is formed in a conical shape, and the conical surface of the tip end thereof is the seat surface, it is easier to manufacture and the seating property for the drainage port 17 is improved as compared with the conventional ball valve type. The reliability of the valve function is improved.
【００１７】次に上記装置を車両に取付ける場合は、バ
ルブケース１４の内部に、尖端部を排水口１７に向けて
フロートバルブ１６を収容し、該ケース１４の端部にス
トッパ１９を押し込み、係合爪２１を係合口２０に係合
して、ストッパ１９をバルブケース１４に連結する。そ
して、ドレンホース１１の一端をバルブケース１４に差
し込み、当該端部を車両の下部フレーム１２の通孔１３
に挿入し、この他端部をドレン孔１０の外側開口縁部に
装着する。Next, when mounting the above device on a vehicle, the float valve 16 is housed inside the valve case 14 with its sharp end facing the drainage port 17, and the stopper 19 is pushed into the end of the case 14 to engage the valve. The stopper 19 is connected to the valve case 14 by engaging the engaging claw 21 with the engagement port 20. Then, one end of the drain hose 11 is inserted into the valve case 14, and the end is connected to the through hole 13 of the lower frame 12 of the vehicle.
And the other end is attached to the outer opening edge of the drain hole 10.
【００１８】この取付け状況は図１，２のようで、ドレ
ンホース１１がエバポレータ８の直下に垂直に配管さ
れ、該ホース１１の下端にバルブケース１４が取付けら
れていて、常時はフロートバルブ１６がバルブ室１５の
下端に位置し、その尖端部が排水孔１７の内側口縁部に
係合して、該孔１７を閉塞している。The mounting condition is as shown in FIGS. 1 and 2, in which the drain hose 11 is vertically piped directly under the evaporator 8 and the valve case 14 is mounted at the lower end of the hose 11 so that the float valve 16 is normally installed. It is located at the lower end of the valve chamber 15, and its tip engages with the inner edge of the drain hole 17 to close the hole 17.
【００１９】このような状況の下で空調装置が内気循環
モードで運転され、ブロワ７が駆動されると、車室２の
空気は図１の矢視のように内気取入口４から取入れら
れ、これが空調ダクト１に導かれて下流側へ移動し、エ
バポレータ８で冷却されて、その冷風が車室２に送り出
される。Under this condition, when the air conditioner is operated in the internal air circulation mode and the blower 7 is driven, the air in the passenger compartment 2 is taken in through the internal air intake port 4 as shown by the arrow in FIG. This is guided to the air conditioning duct 1, moves to the downstream side, is cooled by the evaporator 8, and the cool air is sent to the vehicle interior 2.
【００２０】その際、空調ダクト１内の一部の空気は、
ドレン孔１０に導かれてドレンホース１１を移動する
が、排水口１７がフロートバルブ１６で閉塞されている
ため、上記空気は排水口１７から排出されない。At this time, a part of the air in the air conditioning duct 1 is
Although the drain hose 11 is moved by being guided to the drain hole 10, the air is not discharged from the drain port 17 because the drain port 17 is closed by the float valve 16.
【００２１】こうして空調運転が開始されると、エバポ
レータ８を通過する空気が冷却され、その空気中の水分
が凝縮されて、その液滴がエバポレータ８の放熱フィン
（図示略）に付着し、これが成長して上記フィンを流下
し、エバポレータ８の直下の空調ダクト１に収容され
て、ドレン孔１０よりドレンホース１１に導かれて落下
する。When the air-conditioning operation is started in this way, the air passing through the evaporator 8 is cooled, the moisture in the air is condensed, and the droplets adhere to the radiation fins (not shown) of the evaporator 8, It grows, flows down through the fins, is housed in the air conditioning duct 1 immediately below the evaporator 8, and is guided to the drain hose 11 through the drain hole 10 and falls.
【００２２】上記ドレン水２４はバルブケース１４内を
流下し、通水路１８に導かれてバルブ室１５の底部に滞
留する。そして、ドレン水２４が所定量滞留し、フロー
トバルブ１６の浮力が、該バルブ１６の自重とブロワ７
より発生する静圧との和を越えると、フロートバルブ１
６が浮上して排水口１７が開口し、ドレン水２４が車外
に排出される。この状況は、図４のようである。The drain water 24 flows down in the valve case 14, is guided to the water passage 18, and stays at the bottom of the valve chamber 15. Then, the drain water 24 stays in a predetermined amount, and the buoyancy of the float valve 16 is reduced by the weight of the valve 16 and the blower 7.
If it exceeds the sum of the static pressure generated, the float valve 1
6 floats, the drain port 17 opens, and the drain water 24 is discharged outside the vehicle. This situation is as shown in FIG.
【００２３】ドレン水２４の排出後、フロートバルブ１
６はドレン水２４の液面に同動して下降し、排水口１７
を閉塞する。この場合、軸筒部１６ａはバルブ室１５の
内面に導かれて、フロートバルブ１６の安定した上下動
を促し、排水口１７を確実に開閉する。After draining the drain water 24, the float valve 1
6 moves down along with the liquid surface of the drain water 24, and the drain port 17
To block. In this case, the shaft tube portion 16a is guided to the inner surface of the valve chamber 15 and promotes stable vertical movement of the float valve 16 to reliably open and close the drain port 17.
【００２４】排水口１７の閉塞後、ドレン水２４がバル
ブ室１５に流入して滞留し、これが所定量滞留したとこ
ろで、フロートバルブ１６が浮上し、排水口１７からド
レン水２４が排出される。以後、排水口１７の開閉を周
期的に繰り返し、所定量のドレン水２４を車外へ排出す
る。この場合、ドレン水２４の排出時にバルブ室１５の
空気が漏出する惧れがあるが、排水口１７の開口時間は
瞬時で空気の漏洩を微量に留めるから、これが車室２の
負圧形成には至らない。After the drain port 17 is closed, the drain water 24 flows into the valve chamber 15 and stays there. When the drain water 24 stays in a predetermined amount, the float valve 16 floats up and the drain water 24 is discharged from the drain port 17. After that, opening and closing of the drain port 17 is periodically repeated to discharge a predetermined amount of drain water 24 to the outside of the vehicle. In this case, the air in the valve chamber 15 may leak when the drain water 24 is discharged. However, the opening time of the drain port 17 instantaneously keeps a small amount of air leakage, which causes negative pressure in the vehicle interior 2. Does not reach.
【００２５】このように本発明は、押し込み型のクーリ
ングユニット運転時に、車室２の負圧化を防止してドレ
ン水２４を円滑に排出しているから、外気が車室２に吸
入されることはない。したがって、例えば車両の暖機運
転時に排気ガスが車室２に吸入される不測の事態を防止
し得るとともに、冷房運転時に暖かい外気が車室２に吸
入されて冷房能力が損失したり、暖房運転時に冷たい外
気が車室２に吸入されて、暖房能力が損失することもな
い。As described above, according to the present invention, when the push-in type cooling unit is operated, the drain water 24 is smoothly discharged by preventing the negative pressure in the passenger compartment 2, so that the outside air is sucked into the passenger compartment 2. There is no such thing. Therefore, for example, it is possible to prevent an unexpected situation in which exhaust gas is sucked into the passenger compartment 2 during warm-up operation of the vehicle, and warm outside air is sucked into the passenger compartment 2 during cooling operation, resulting in loss of cooling capacity or heating operation. Occasionally, cold outside air is sucked into the passenger compartment 2 and the heating capacity is not lost.
【００２６】また、本発明の装置は、空調運転停止時に
フロートバルブ１６が閉弁して、排水口１７を閉塞し、
空調運転再開後もバルブ室１５の空気の漏出を防止して
いるから、車室２の冷房効果を早急に得られる。しか
も、排水口１７からの空気の排出が無く、ブロワ７の送
風が全て車室２に吹き出されるから、空調装置の送風能
力が向上する。Further, in the device of the present invention, when the air conditioning operation is stopped, the float valve 16 is closed to close the drain port 17,
Even after the air conditioning operation is restarted, the air leakage in the valve chamber 15 is prevented, so that the cooling effect of the vehicle compartment 2 can be obtained immediately. Moreover, since there is no discharge of air from the drain port 17 and all the air blown by the blower 7 is blown into the vehicle compartment 2, the air blowing capacity of the air conditioner is improved.
【００２７】なお、冷房運転時にエバポレータ８から大
量のドレン水２４が生成され、これがバルブ室１５に流
入すると、フロートバルブ１６が浮上してストッパ１９
と当接し、当該位置を維持するとともに、排水口１７か
らのドレン水２４の排出を促す。この間、排水口１７は
ドレン水２４で満たされているから、排水口１７から車
室空気が排出されたり外気が流入したりしない。When a large amount of drain water 24 is generated from the evaporator 8 during the cooling operation and flows into the valve chamber 15, the float valve 16 floats and the stopper 19 is pulled up.
And the position is maintained, and the drain water 24 is expelled from the drain port 17. During this time, since the drain port 17 is filled with the drain water 24, the vehicle compartment air is not discharged from the drain port 17 and the outside air does not flow in.
【００２８】なお、暖房運転時にはヒータコア（図示
略）が作動し、エバポレータ８が作動を停止して、排水
口１７がフロートバルブ１６で閉塞されているから、仮
に内気循環モードで運転していても車室空気の排出が防
止され、車室２の負圧化が防止される。したがって、冷
たい外気が車室２に吸入されたり排水口１７から流入し
て、暖房能力が損失することはない。During the heating operation, the heater core (not shown) operates, the evaporator 8 stops operating, and the drain port 17 is closed by the float valve 16. Exhaust of vehicle compartment air is prevented, and negative pressure in the vehicle compartment 2 is prevented. Therefore, the cold outside air is not sucked into the vehicle compartment 2 or flows in from the drain port 17, and the heating capacity is not lost.
【００２９】[0029]
【発明の効果】以上のように請求項１記載の発明は、エ
バポレータより上流側の空気通路にブロワを配置し、バ
ルブ室の底部に排水口を形成したバルブケースを装着
し、上記バルブ室にドレン水よりも比重の小さな排水弁
を収容し、常時は排水弁を介して排水口を閉塞し、バル
ブ室に所定量のドレン水が滞留した際排水口を開口可能
にしたから、押し込み型クーリングユニットのドレン水
排出装置を実現することができるとともに、ドレン水排
出伴う車室の負圧化を簡単な構成で防止することができ
る。したがって、車室の負圧化による外気の吸入を防止
し、排気ガスの吸入による不測の事態を未然に防止でき
るとともに、冷房運転時は暖かい外気の吸入を防止し、
暖房運転時は冷たい外気の吸入を防止できるから、冷暖
房能力の損失を強力に防止できる効果がある。As described above, according to the first aspect of the invention, the blower is arranged in the air passage upstream of the evaporator, and the valve case having the drain port formed at the bottom of the valve chamber is attached to the valve chamber. A drain valve with a smaller specific gravity than the drain water is housed, the drain port is normally closed via the drain valve, and the drain port can be opened when a certain amount of drain water has accumulated in the valve chamber. It is possible to realize the drain water discharge device of the unit, and it is possible to prevent negative pressure in the vehicle compartment due to drain water discharge with a simple configuration. Therefore, it is possible to prevent the inhalation of the outside air due to the negative pressure in the passenger compartment, prevent the unexpected situation due to the inhalation of the exhaust gas, and prevent the inhalation of the warm outside air during the cooling operation,
Since the intake of cold outside air can be prevented during heating operation, there is an effect that the loss of cooling and heating capacity can be strongly prevented.
【図１】本発明の実施形態を示す断面図で、内気循環モ
ードの運転状況を示している。FIG. 1 is a cross-sectional view showing an embodiment of the present invention, showing an operating condition in an internal air circulation mode.
【図２】本発明の実施形態の要部を拡大して示す断面図
で、排水弁の閉弁状況を示している。FIG. 2 is a cross-sectional view showing an enlarged main part of an embodiment of the present invention, showing a closed state of a drain valve.
【図３】図２のＡーＡ線に沿う断面図である。3 is a sectional view taken along the line AA of FIG.
【図４】本発明の実施形態の作動状態を示す断面図で、
排水弁の開弁状況を示しているFIG. 4 is a cross-sectional view showing an operating state of the embodiment of the present invention,
Indicates the opening status of the drain valve
【図５】本発明の第２の実施形態の要部を拡大して示す
断面図で、排水弁の閉弁状況を示している。FIG. 5 is an enlarged cross-sectional view showing a main part of a second embodiment of the present invention, showing a closed state of a drain valve.
【図６】図５のＢーＢ線に沿う断面図である。6 is a cross-sectional view taken along the line BB of FIG.
【図７】本発明の第２の実施形態の作動状態を示す断面
図で、排水弁の開弁状況を示している。FIG. 7 is a cross-sectional view showing an operating state of the second embodiment of the present invention, showing a drain valve open state.
１ 空調ダクト ３ 空気通路 ８ エバポレータ １０ ドレン孔 １１ ドレンホース １６ 排水弁（フロートバルブ） １７ 排水口 ２４ ドレン水 1 Air-conditioning duct 3 Air passage 8 Evaporator 10 Drain hole 11 Drain hose 16 Drain valve (float valve) 17 Drain port 24 Drain water
Claims (1)
置した空調ダクトにドレン孔を設け、該孔の外側にドレ
ンホースを装着し、該ホースの内側にドレン水を排出可
能な排水弁を設けた車両用空調装置のドレン水排出装置
において、エバポレータより上流側の空気通路にブロワ
を配置し、バルブ室の底部に排水口を形成したバルブケ
ースを装着し、上記バルブ室にドレン水よりも比重の小
さな排水弁を収容し、常時は排水弁を介して排水口を閉
塞し、バルブ室に所定量のドレン水が滞留した際排水口
を開口可能にしたことを特徴とする車両用空調装置のド
レン水排出装置。1. A drain hole is provided in an air conditioning duct in which a blower and an evaporator are arranged in an air passage, a drain hose is mounted outside the hole, and a drain valve capable of discharging drain water is provided inside the hose. In a drain water discharge device of a vehicle air conditioner, a blower is arranged in the air passage upstream of the evaporator, a valve case with a drain port is attached to the bottom of the valve chamber, and the valve chamber has a specific gravity higher than that of the drain water. A small drain valve is housed, the drain port is normally closed via the drain valve, and the drain port can be opened when a predetermined amount of drain water has accumulated in the valve chamber. Water drainage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7242809A JPH0986152A (en) | 1995-09-21 | 1995-09-21 | Drain water discharge device of air conditioner for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7242809A JPH0986152A (en) | 1995-09-21 | 1995-09-21 | Drain water discharge device of air conditioner for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0986152A true JPH0986152A (en) | 1997-03-31 |
Family
ID=17094617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7242809A Withdrawn JPH0986152A (en) | 1995-09-21 | 1995-09-21 | Drain water discharge device of air conditioner for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0986152A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100610932B1 (en) * | 2004-06-03 | 2006-08-10 | 현대자동차주식회사 | Drain device of HVAC system for vehicle |
| KR100783955B1 (en) * | 2006-09-11 | 2007-12-10 | 현대자동차주식회사 | Blower unit of air-conditioner for vehicle |
| CN103017318A (en) * | 2012-12-31 | 2013-04-03 | 东风汽车股份有限公司 | Top evaporation drainage pipe of passenger car air conditioner |
| WO2014129115A1 (en) * | 2013-02-25 | 2014-08-28 | 株式会社デンソー | Water discharge device and air conditioning device with same |
| JP2014218187A (en) * | 2013-05-09 | 2014-11-20 | 三菱電機株式会社 | Vehicle air conditioner |
-
1995
- 1995-09-21 JP JP7242809A patent/JPH0986152A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100610932B1 (en) * | 2004-06-03 | 2006-08-10 | 현대자동차주식회사 | Drain device of HVAC system for vehicle |
| KR100783955B1 (en) * | 2006-09-11 | 2007-12-10 | 현대자동차주식회사 | Blower unit of air-conditioner for vehicle |
| CN103017318A (en) * | 2012-12-31 | 2013-04-03 | 东风汽车股份有限公司 | Top evaporation drainage pipe of passenger car air conditioner |
| WO2014129115A1 (en) * | 2013-02-25 | 2014-08-28 | 株式会社デンソー | Water discharge device and air conditioning device with same |
| JP2014184952A (en) * | 2013-02-25 | 2014-10-02 | Denso Corp | Drainage device and air conditioner including the same |
| CN105008161A (en) * | 2013-02-25 | 2015-10-28 | 株式会社电装 | Water discharge device and air conditioning device with same |
| CN105008161B (en) * | 2013-02-25 | 2017-08-08 | 株式会社电装 | Drainage arrangement and the air-conditioning device with it |
| US9776474B2 (en) | 2013-02-25 | 2017-10-03 | Denso Corporation | Water discharge device and air conditioning device with same |
| JP2014218187A (en) * | 2013-05-09 | 2014-11-20 | 三菱電機株式会社 | Vehicle air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20021203 |