JPS63170520A - Cooling device for vehicle - Google Patents
Cooling device for vehicleInfo
- Publication number
- JPS63170520A JPS63170520A JP278587A JP278587A JPS63170520A JP S63170520 A JPS63170520 A JP S63170520A JP 278587 A JP278587 A JP 278587A JP 278587 A JP278587 A JP 278587A JP S63170520 A JPS63170520 A JP S63170520A
- Authority
- JP
- Japan
- Prior art keywords
- air conditioner
- heat exchanger
- cooling water
- temperature
- engine
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims description 22
- 239000003507 refrigerant Substances 0.000 claims abstract description 22
- 239000000498 cooling water Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000002826 coolant Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000013021 overheating Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Abstract
Description
を産業上の利用分野】
本発明は、自動車等の車両のエンジン冷却装置にエアコ
ン装置を組合わせた冷却装置に関し、詳しくは、エアコ
ン使用時にエバポレータ通過後の低温冷媒を利用してエ
ンジン冷却水温を低下するものに関する。[Field of Industrial Application] The present invention relates to a cooling system that combines an engine cooling system and an air conditioner for vehicles such as automobiles, and more specifically, the present invention relates to a cooling system that combines an engine cooling system and an air conditioner for a vehicle such as an automobile. Concerning things that decline.
従来一般に、エアコンを装備した車両はエンジン動力の
一部でコンプレッサを駆動し、ラジェータの前方にコン
デンサを配置して走行風等で冷媒を冷却液化する構成に
なっている。Conventionally, vehicles equipped with an air conditioner drive a compressor using part of the engine power, and a condenser is placed in front of a radiator to cool and liquefy the refrigerant using the wind while driving.
【発明が解決しようとする問題点１
ところで、上記従来のエアコン装置のものにあっては、
エアコン使用時にコンプレッサによるエンジン負向が増
大する。また、コンデンサの付加でラジェータの冷却能
力に影響が及ぶこともあって、エンジン冷却水の温度が
上昇する傾向になる。
そこで、オーバヒートを防止するためラジェータ容量を
大型化することが考えられているが、車載スペース上の
制約があり、コストアップを招く等の問題がある。この
ため、エアコン使用時にのみそのエンジン冷却水温を効
果的に低下する対策が必要になっている。
尚、エアコン装置のエバポレータ通過後の冷媒を利用す
る冷却装置として、例えば特開昭５７−３７０１１号公
報の先行技術がある。ここで、アキュムレータに低温冷
媒を貯えて燃料やトルコンオイルの配管を接触させ、冷
房効果を向上することが示されているが、エンジン冷却
水温の低下対策にはなっていない。
本発明は、このような点に鑑みてなされたもので、エア
コン使用時の低温冷媒を利用して、エアコン使用時のエ
ンジン冷却水温を有効に低下するようにした車両用冷却
装置を提供することを目的としている。
【問題点を解決するための手段】
上記Ｏ的を達成するため、本発明は、エンジン冷却装置
のラジェータのタンク内部に熱交換器を設けると共に、
エアコン装置のエバポレータ通過後の低温冷媒系路に上
記熱交換器を通る分岐系路を設け、エアコン使用時に冷
却水温が設定値以上になると、低温冷媒を熱交換器に導
いて冷却水との間で熱交換するように構成されている。[Problem to be solved by the invention 1] By the way, in the above-mentioned conventional air conditioner device,
When using the air conditioner, the engine negative force due to the compressor increases. Additionally, the addition of a condenser may affect the cooling capacity of the radiator, leading to a tendency for the temperature of the engine coolant to rise. Therefore, it has been considered to increase the radiator capacity in order to prevent overheating, but this poses problems such as limitations in the vehicle mounting space and an increase in cost. Therefore, there is a need for a measure to effectively lower the engine cooling water temperature only when the air conditioner is in use. As a cooling device that utilizes the refrigerant that has passed through the evaporator of an air conditioner, for example, there is a prior art disclosed in Japanese Unexamined Patent Publication No. 57-37011. Here, it has been shown that storing low-temperature refrigerant in an accumulator and bringing it into contact with fuel and torque converter oil piping improves the cooling effect, but this does not address the drop in engine cooling water temperature. The present invention has been made in view of the above points, and an object of the present invention is to provide a cooling device for a vehicle that uses a low-temperature refrigerant when the air conditioner is used to effectively lower the engine cooling water temperature when the air conditioner is used. It is an object. [Means for Solving the Problems] In order to achieve the above objectives, the present invention provides a heat exchanger inside the tank of the radiator of the engine cooling system, and
A branch line passing through the heat exchanger is installed in the low-temperature refrigerant line after passing through the evaporator of the air conditioner, and when the coolant temperature exceeds the set value when the air conditioner is in use, the low-temperature refrigerant is guided to the heat exchanger and connected to the coolant. is configured to exchange heat.
上記構成に基づき、ラジェータのタンク内部の熱交換器
に、エアコン使用時に冷却水温が高くなると低温冷媒が
導かれて冷却＊温を低下するようになる。
こうして本発明では、エアコン使用時に低温冷媒を利用
してラジェータの冷却能力を増大し、エンジン冷却水温
を効果的に低下することが可能となる。
Ｌ実 施 例】
以下、本発明の実施例を図面に基づいて説明する。
図面において、符号１はエンジン冷却装置であり、エン
ジン２からのインレットホース３がラジェータ４のアッ
パタンク４ａに連通し、ロアタンク４ｂからのアウトレ
ットホース５がエンジン２に連通して冷却水の循環系路
を成す。また符号１ｏはエアコン装置であり、コンプレ
ッサ１１がエンジン２に対しベルト駆ａ装置１２．ｆｆ
ｉ磁クラッチ１３を介して連結する。そして、コンプレ
ッサ１１の吐出側がバイブ１４によりコンデンサ１５．
リキッドタンク１６゜膨張弁１γ、エバポレータ１８を
介してコンプレッサ１１の吸入側に達通し、冷媒の循環
系路を成す。このようなエアコン装置１０は、エアコン
スイッチ１９のＯＮによりクラッチ１３を係合してコン
プレッサ１１をエンジン動力で駆動することで、冷媒を
循環して冷房作用するようになっている。
そこで、上記ラジェータ４のアッパタンク４ａの内部に
熱交換器２０が付加される。また、エバポレータ１８か
らのバイブ１４ａに対してバイブ１４１）が分岐し、こ
のバイブ１４ｂにより上記熱交換器２０を通る分岐系路
が構成され、各バイブ１４ａ 、 １４ｂの分岐点下流
側に電磁弁２１．２２が設けられる。更に、ラジェータ
４のロアタンク４ｂ内には冷却水温検出用のサーモスイ
ッチ２３が設けられ、各スイッチ１９゜２３の信号が制
御ユニット２４に入力し、この出力信号で電磁弁２１．
２２をｊ１閉する。制御ユニット２４はエアコンスイッ
チ１９のオン・オフにかかわらず、設定冷却水温以下の
場合に電磁弁２１を開いて電磁か２２を閉じ、設定冷却
水温以上でサーモスイッチ２３がオンすると逆に電磁弁
２１を閉じて電磁弁２２を開く構成になっている。
次いで、このように構成された冷却装置の作用について
述べる。
先ず、エンジン運転時に冷却水温が高くなると、冷却水
はホース３．５によりラジェータ４を経て循環して冷却
される。このとき、エアコンスイッチ１９がオフの場合
はコンプレッサ１１が停止して、エアコン装置１０は不
動作の状態にある。
一方、エアコン使用時にそのスイッチ１９をオンすると
、電磁クラッチ１３の係合によりエンジン動力でコンプ
レッサ１１が駆動して冷媒を高温圧縮する。この冷媒は
コンデンサ１５に入って空冷液化し、リキッドタンク１
Ｇ、膨張弁１７を経てエバポレータ１８に入る際に膨張
気化し、このとき車室内の熱を奪って冷房する。そして
、この低温気化した冷媒がコンプレッサ１１に入って再
び圧縮されるのであり、かかる動作を繰返して冷房作用
を継続している。
このとき、冷却水温がサーモスイッチ２３により検出さ
れており、エンジン負荷の増大等により冷ｆＪＩ水温が
設定値に達してサーモスイッチ２３がオンすると、制御
ユニット２４により電磁弁２１を閉じて７Ｉ２磁弁２２
を開く。そこで、エバポレータ１８を通過した例えば−
１０〜−２０℃の低温の冷媒がバイブ１４ｂにより熱交
４ｇｌ器２０に導入し、冷却水との間で熱交換する。そ
のため、ラジェータ４に流入した高温の冷却水は低温の
冷媒でラジェータ４の能力以上に冷されることになって
温度低下するのであり、こうして冷却水温がサーモスイ
ッチ２３の設定値以下に抑えられてエンジンのオーバヒ
ートを防ぐのである。尚、熱交換器２０を経た冷媒はコ
ンブレラ′ＩＪ１１に流入して冷房作用も続行すること
は勿論である。Based on the above configuration, when the cooling water temperature increases when the air conditioner is used, low-temperature refrigerant is introduced into the heat exchanger inside the radiator tank to lower the cooling*temperature. Thus, in the present invention, when the air conditioner is used, the cooling capacity of the radiator is increased by using the low-temperature refrigerant, and the engine cooling water temperature can be effectively lowered. L Embodiment] Hereinafter, embodiments of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes an engine cooling system, in which an inlet hose 3 from the engine 2 communicates with an upper tank 4a of a radiator 4, an outlet hose 5 from a lower tank 4b communicates with the engine 2, and a cooling water circulation path is established. I will do it. Further, reference numeral 1o indicates an air conditioner device, in which a compressor 11 is connected to an engine 2 and a belt drive device 12. ff
i Connect via magnetic clutch 13. Then, the discharge side of the compressor 11 is connected to the condenser 15 by the vibrator 14.
The liquid tank 16° reaches the suction side of the compressor 11 via the expansion valve 1γ and the evaporator 18, forming a refrigerant circulation path. Such an air conditioner device 10 engages the clutch 13 when the air conditioner switch 19 is turned on and drives the compressor 11 with engine power, thereby circulating refrigerant and performing a cooling effect. Therefore, a heat exchanger 20 is added inside the upper tank 4a of the radiator 4. Further, a vibrator 141) is branched from the vibrator 14a from the evaporator 18, and this vibrator 14b constitutes a branch line passing through the heat exchanger 20, and a solenoid valve 21 is installed downstream of the branch point of each vibrator 14a, 14b. .22 is provided. Further, a thermoswitch 23 for detecting cooling water temperature is provided in the lower tank 4b of the radiator 4, and signals from each switch 19 and 23 are input to the control unit 24, and this output signal is used to control the solenoid valve 21.
Close 22 j1. Regardless of whether the air conditioner switch 19 is on or off, the control unit 24 opens the solenoid valve 21 and closes the solenoid valve 22 when the coolant temperature is below the set coolant temperature, and conversely opens the solenoid valve 21 when the thermo switch 23 is turned on when the coolant temperature is above the set coolant temperature. is configured to close and open the solenoid valve 22. Next, the operation of the cooling device configured as described above will be described. First, when the cooling water temperature becomes high during engine operation, the cooling water is circulated through the radiator 4 by the hose 3.5 and cooled. At this time, if the air conditioner switch 19 is off, the compressor 11 is stopped and the air conditioner 10 is in a non-operating state. On the other hand, when the switch 19 is turned on when using the air conditioner, the electromagnetic clutch 13 is engaged and the compressor 11 is driven by the engine power to compress the refrigerant at a high temperature. This refrigerant enters the condenser 15 and is liquefied by air cooling.
G. When entering the evaporator 18 via the expansion valve 17, the air expands and vaporizes, and at this time removes heat from the interior of the vehicle to cool it. Then, this low-temperature vaporized refrigerant enters the compressor 11 and is compressed again, and this operation is repeated to continue the cooling effect. At this time, the cooling water temperature is detected by the thermo switch 23, and when the cold fJI water temperature reaches the set value due to an increase in engine load and the thermo switch 23 is turned on, the control unit 24 closes the solenoid valve 21 and closes the 7I2 solenoid valve. 22
open. Therefore, for example, after passing through the evaporator 18 -
A refrigerant at a low temperature of 10 to -20° C. is introduced into the heat exchanger 20 by a vibrator 14b and exchanges heat with the cooling water. Therefore, the high-temperature cooling water that has flowed into the radiator 4 is cooled by the low-temperature refrigerant to a level higher than the capacity of the radiator 4, resulting in a drop in temperature.In this way, the cooling water temperature is suppressed to below the set value of the thermoswitch 23. This prevents the engine from overheating. It goes without saying that the refrigerant that has passed through the heat exchanger 20 flows into the combiner 'IJ11' to continue its cooling action.
以上述べてきたように、本発明によれば、エアコン使用
時のエンジン冷却水温の上昇を、このとき用いられる冷
媒の低温を利用して効果的に低下することができ、ラジ
ェータ客層の増大等を招かないですむ。
低温冷媒との熱交換により冷却水温を効率良く低下し得
る。As described above, according to the present invention, it is possible to effectively reduce the rise in engine cooling water temperature when an air conditioner is used by utilizing the low temperature of the refrigerant used at this time, and to increase the number of radiator customers. You don't have to invite me. Cooling water temperature can be efficiently lowered by heat exchange with low-temperature refrigerant.
図面は本発明の冷却装置の実施例を示す構成図である。
１・・・エンジン冷却装置、４・・・ラジェータ、１０
・・・エアコン装置、１１・・・コンプレッサ、１８・
・・エバポレータ、２０・・・熱交換器、２１．２２・
・・電磁弁、２３・・・サーモスイッチ、２４・・・制
御ユニット。The drawing is a configuration diagram showing an embodiment of the cooling device of the present invention. 1... Engine cooling system, 4... Radiator, 10
...Air conditioner device, 11...Compressor, 18.
...Evaporator, 20...Heat exchanger, 21.22.
...Solenoid valve, 23...Thermo switch, 24...Control unit.
Claims (1)
を設けると共に、エアコン装置のエバポレータ通過後の
低温冷媒系路に上記熱交換器を通る分岐系路を設け、 エアコン使用時に冷却水温が設定値以上になると、低温
冷媒を熱交換器に導いて冷却水との間で熱交換する車両
用冷却装置。[Scope of Claims] A heat exchanger is provided inside the tank of the radiator of the engine cooling system, and a branch line passing through the heat exchanger is provided in the low-temperature refrigerant line after passing through the evaporator of the air conditioner, so that the air conditioner is cooled when the air conditioner is used. A vehicle cooling system that guides low-temperature refrigerant to a heat exchanger to exchange heat with cooling water when the water temperature exceeds a set value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP278587A JPS63170520A (en) | 1987-01-08 | 1987-01-08 | Cooling device for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP278587A JPS63170520A (en) | 1987-01-08 | 1987-01-08 | Cooling device for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63170520A true JPS63170520A (en) | 1988-07-14 |
Family
ID=11539000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP278587A Pending JPS63170520A (en) | 1987-01-08 | 1987-01-08 | Cooling device for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63170520A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001011211A1 (en) * | 1999-08-05 | 2001-02-15 | Mitsuhiro Sano | Cooling controller for internal-combustion engine |
| KR20020031052A (en) * | 2000-10-20 | 2002-04-26 | 파블리크 월터 이. | Vehicular cooling system |
| US6612271B2 (en) | 2001-03-13 | 2003-09-02 | Nippon Thermostat Co., Ltd. | Cooling controller for internal-combustion engine |
| KR20040041365A (en) * | 2002-11-11 | 2004-05-17 | 현대자동차주식회사 | A cooling device for electronic control unit mounted in engine room of automobile |
-
1987
- 1987-01-08 JP JP278587A patent/JPS63170520A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001011211A1 (en) * | 1999-08-05 | 2001-02-15 | Mitsuhiro Sano | Cooling controller for internal-combustion engine |
| US6481387B1 (en) | 1999-08-05 | 2002-11-19 | Nippon Thermostat Co., Ltd. | Cooling controller for internal-combustion engine |
| KR20020031052A (en) * | 2000-10-20 | 2002-04-26 | 파블리크 월터 이. | Vehicular cooling system |
| US6612271B2 (en) | 2001-03-13 | 2003-09-02 | Nippon Thermostat Co., Ltd. | Cooling controller for internal-combustion engine |
| KR20040041365A (en) * | 2002-11-11 | 2004-05-17 | 현대자동차주식회사 | A cooling device for electronic control unit mounted in engine room of automobile |
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