JPS6094815A - Air conditioner of vehicle - Google Patents
Air conditioner of vehicleInfo
- Publication number
- JPS6094815A JPS6094815A JP20301383A JP20301383A JPS6094815A JP S6094815 A JPS6094815 A JP S6094815A JP 20301383 A JP20301383 A JP 20301383A JP 20301383 A JP20301383 A JP 20301383A JP S6094815 A JPS6094815 A JP S6094815A
- Authority
- JP
- Japan
- Prior art keywords
- heater core
- coolant
- flow rate
- cooling liquid
- valve
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は自動車のウィンドガラスの曇り防止や車室内の
空気調和を行う自動車用空気調和装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an air conditioner for an automobile that prevents the windshield of an automobile from fogging and conditions the air inside the vehicle.
従来例の構成とその問題点
従来の空気調和装置で全再加熱方式といわれるものは、
第１図にその具体構成を示すように送風機１で給送され
た被空調空気を上流側の蒸発器２で冷却・減湿し、下流
側のヒータコア３においてエンジン冷却液（以下冷却液
と略する）量を流量可変弁４で調節しながら再加熱する
ものであり、その冷却液回路は第２図に具体構成を示す
ように、冷却液ポンプ５によってエンジン６に給送され
た冷却液が、流量可変弁４を通してヒータコア３におい
て放熱された後、冷却液ポンプ５の吸い込み側に設けら
れた合流点７に至るという循環を行うものであった。こ
のような構成ではヒータコア３の放熱作用が不要の場合
に流量可変弁４を完全閉止しても、ラジェータ８で放熱
され三方サーモ弁９を通過して合流点７に至った冷却液
やバイパス路１４を流れた冷却液と、ヒータコア３内部
に滞溜している冷却液とはヒータコア出口配管１０を通
して連通していた。このことによってヒータコア３を通
過する空気の温度より高い合流点７の冷却液の熱量が、
ヒータコア出口配管１ｏを介して自然対流によってヒー
タコア３に伝達されることで、不必要な放熱がヒータコ
ア３において行われることになり、その分だけ蒸発器２
の冷却効果が損われて空気調和装置のエネルギ効率を悪
化させるということや、蒸発器２とヒータコア３も作動
させない送風状態においても被空調空気を加熱させてし
まうという問題があった。Conventional configuration and its problems Conventional air conditioners that use the full reheating method are:
As shown in FIG. 1, the conditioned air fed by a blower 1 is cooled and dehumidified by an evaporator 2 on the upstream side, and an engine coolant (hereinafter simply referred to as "coolant") is sent to the heater core 3 on the downstream side. The coolant circuit is designed to reheat the coolant while adjusting the amount of the coolant supplied to the engine 6 by the coolant pump 5, as shown in FIG. After the heat is radiated in the heater core 3 through the variable flow rate valve 4, the heat is circulated to a confluence point 7 provided on the suction side of the coolant pump 5. In such a configuration, even if the variable flow valve 4 is completely closed when the heat dissipation action of the heater core 3 is not required, the coolant that has been dissipated by the radiator 8, passed through the three-way thermovalve 9, and reached the confluence point 7, and the bypass path The coolant flowing through the heater core 14 and the coolant staying inside the heater core 3 communicated through the heater core outlet pipe 10. As a result, the amount of heat of the coolant at the confluence point 7, which is higher than the temperature of the air passing through the heater core 3, is
By being transmitted to the heater core 3 by natural convection via the heater core outlet piping 1o, unnecessary heat is dissipated in the heater core 3, and the evaporator 2
There have been problems in that the cooling effect of the air conditioner is impaired and the energy efficiency of the air conditioner is deteriorated, and that the conditioned air is heated even in a blowing state in which neither the evaporator 2 nor the heater core 3 is operated.
発明の目的
本発明は上記従来の問題点を解消するものであり、エネ
ルギ効率の向上と乗員の空調快適性の改善を図るもので
ある。OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems and aims to improve energy efficiency and air conditioning comfort for passengers.
発明の構成
本発明の自動車用空気調和装置は、動力を発生し冷却液
に熱を与えるエンジンと、前記冷却液を循環させる冷却
液ボ／プと、前記冷却液の熱量を車外へ放熱するラジェ
ータと、前記冷却液の熱量を車室内へ放熱するヒータコ
アと、前記ヒータコアの前記冷却液入口側に設けられた
流量可変弁と、前記ヒータコアの前記冷却水出口側に設
けられた対流防止弁とからなり、エネルギ効率が向上で
き、乗員の空調快適性を高めることができるという実用
上きわめて有利なものである。Structure of the Invention The automotive air conditioner of the present invention includes an engine that generates power and heats a coolant, a coolant pump that circulates the coolant, and a radiator that radiates heat from the coolant to the outside of the vehicle. a heater core that radiates heat of the coolant into the vehicle interior; a variable flow valve provided on the coolant inlet side of the heater core; and a convection prevention valve provided on the coolant outlet side of the heater core. This is extremely advantageous in practice, as energy efficiency can be improved and air-conditioned comfort for passengers can be improved.
実施例の説明
以下に本発明の一実施例を第３図にもとづいて説明する
。第３図において１１は冷却液を循環する冷却液ポンプ
、１２は動力を発生し冷却液によって冷却（冷却液が加
熱）されるエンジン、１３は冷却液の熱を車外へ放熱す
るラジェータ、１４は冷却液をラジェータ１３へ流さず
にエンジン１２と冷却ポンプ１１との間だけに循環させ
るバイノζス路、１５は温度検知機構によってラジェー
タ１３あるいはバイパス路１４のどちらか一方のみに冷
却液を流通させる温度検知三方弁である。また１６は冷
却液の熱を車室内へ放熱するヒータコア、１７はヒータ
コア１６における放熱量を調整するだめの全閉止も可能
な冷却液の流量可変弁、１８はヒータコア出口側配管１
９に設けられた対流防止弁であり、ヒータコア出口側配
管１９は冷却液ポンプ１１の吸い込み側に設けられた合
流点２ｏにおいて、ラジェータ１３およびバイパス路１
４を流動する冷却液と連通されている。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In Fig. 3, 11 is a coolant pump that circulates coolant, 12 is an engine that generates power and is cooled by the coolant (the coolant is heated), 13 is a radiator that radiates heat from the coolant to the outside of the vehicle, and 14 is a A bi-noise path 15 circulates the coolant only between the engine 12 and the cooling pump 11 without flowing it to the radiator 13, and a temperature detection mechanism allows the coolant to flow only to either the radiator 13 or the bypass path 14. It is a temperature sensing three-way valve. 16 is a heater core that radiates heat from the coolant into the passenger compartment; 17 is a variable flow rate valve for the coolant that can be fully closed to adjust the amount of heat dissipated in the heater core 16; and 18 is a pipe 1 on the outlet side of the heater core.
The heater core outlet side pipe 19 connects the radiator 13 and the bypass path 1 at the confluence point 2o provided on the suction side of the coolant pump 11.
4 and is in communication with the cooling liquid flowing through it.
充分に冷え切った状態でエンジン１２を始動させると冷
却液ポンプ１１も連動して回転し冷却液を循環させるが
冷却液の温度も低く、エンジン１２自体の暖機間は温度
検知三方弁１５の回路切り替えによって冷却液は冷却液
ポンプ１１、エンジン１２、バイパス路１４、温度検知
三方弁１５という短絡回路内だけを循環する。エンジン
１２の暖機にとって支障のない温度にまで冷却液温度が
上昇している状態において、車室内の窓ガラス曇ｐ取り
°結氷融解（デフロスト）や暖房運転の指令が装置にな
されると、流量可変弁１７と対流防止弁１日とが開弁し
、冷却液がヒータコア１６に流通するとともに適量の送
風がヒータコア１６に対して行われて前記運転状態とな
る。流量可変弁１７の弁開度は例えば暖房運転において
、設定室内温度を維持するように制御されてヒータコア
１６に流通する冷却液流量を変化させ放熱量を調節する
。When the engine 12 is started in a sufficiently cold state, the coolant pump 11 also rotates and circulates the coolant, but the temperature of the coolant is also low, and the temperature sensing three-way valve 15 is closed while the engine 12 is warming up. By switching the circuit, the coolant circulates only in a short circuit consisting of the coolant pump 11, the engine 12, the bypass passage 14, and the temperature sensing three-way valve 15. When the coolant temperature has risen to a temperature that does not pose a problem for warming up the engine 12, when a command is issued to the device to defrost the window glass in the vehicle interior or to perform heating operation, the flow rate increases. The variable valve 17 and the convection prevention valve 1 are opened, the cooling liquid flows through the heater core 16, and an appropriate amount of air is blown to the heater core 16, resulting in the operating state. The valve opening degree of the variable flow rate valve 17 is controlled to maintain a set indoor temperature during heating operation, for example, and the flow rate of the coolant flowing through the heater core 16 is changed to adjust the amount of heat radiation.
最大冷房状態や送風のみの状態においてヒータコブ１６
の放熱が不要となった場合には、流量可変弁１７が完全
閉止、対流防止弁１８が閉止されてヒータコア１６への
冷却液流通が遮断される。このときヒータコア１６に対
し引き続き送風のある場合には、ヒータコア１６内部に
滞溜する冷却液は比較的短時間に放熱して冷やされてし
まい空気に対する加熱作用が無くなる。ヒータコア１６
内部に滞溜した冷却液は入口側で流量可変弁１７、出口
側で対流防止弁１８とによって機械的に流路を遮断され
るので、ヒータコア１６に対するエンジン１２側からお
よび合流部２０側からの直接的な冷却液の自然対流によ
る熱漏洩が防止される。Heater knob 16 in maximum cooling state or in air-only state
When heat dissipation is no longer necessary, the variable flow valve 17 is completely closed, the anti-convection valve 18 is closed, and the flow of coolant to the heater core 16 is cut off. At this time, if air continues to be blown to the heater core 16, the coolant accumulated inside the heater core 16 will radiate heat and be cooled in a relatively short period of time, and will no longer have a heating effect on the air. Heater core 16
The flow path of the coolant accumulated inside is mechanically blocked by the variable flow valve 17 on the inlet side and the convection prevention valve 18 on the outlet side, so that the coolant does not flow from the engine 12 side to the heater core 16 and from the merging section 20 side. Heat leakage due to direct natural convection of the coolant is prevented.
−吉川口側配管１９などを通しての伝導熱の伝達が考え
られるが、両弁１７・１８そのものが熱抵抗の役割を果
す他、ヒータコア１６に対する熱漏洩の影響は極めてわ
ずかに押えられる。なお、冷却液温度がかなりの高温（
例えば８０℃）度になった場合には温度検知三方弁１６
が作動されラジェータ１３にて放熱が行われる。- Transfer of conductive heat through the Yoshikawa port side piping 19 is considered, but both valves 17 and 18 themselves serve as a thermal resistance, and the influence of heat leakage to the heater core 16 is suppressed to a very small extent. Note that the coolant temperature is quite high (
For example, if the temperature reaches 80℃), the temperature detection three-way valve 16
is activated, and the radiator 13 radiates heat.
第４図は本発明の他の実施例を示すもので、ラジェータ
１３の冷却液上流側に温度検知三方弁１６とバイパス路
１４を設け、流量可変弁１Ｔを三方弁型として弁開度に
応じてヒータコア１６への流量をヒータバイパス路２１
ヘバイパスさせるものテする。流量可変型三方弁１７は
ヒータコア１６への流量を完全閉止することができ、他
の動作は前記実施例と同様である。FIG. 4 shows another embodiment of the present invention, in which a temperature sensing three-way valve 16 and a bypass passage 14 are provided on the upstream side of the coolant of the radiator 13, and the variable flow rate valve 1T is of a three-way valve type, and the flow rate varies depending on the valve opening. to direct the flow rate to the heater core 16 through the heater bypass path 21.
There are things that will bypass it. The variable flow rate three-way valve 17 can completely close the flow rate to the heater core 16, and other operations are the same as in the previous embodiment.
上記構成の装置において、エンジン１２、ラジェータ１
３、ヒータコア１６、冷却液ポンプ１１などが異なった
冷却回路で形成されていても、それら管路形態にこだわ
ることなくヒータコア上流側に流量可変弁１７、下流側
に対流防止弁１８を設けることができ実用範囲の広いも
のである。In the device having the above configuration, the engine 12, the radiator 1
3. Even if the heater core 16, coolant pump 11, etc. are formed with different cooling circuits, the variable flow valve 17 can be provided on the upstream side of the heater core and the convection prevention valve 18 on the downstream side, regardless of the pipe configuration. It has a wide range of practical applications.
なお、ヒータコア１６の空気上流側には従来例の構成と
その問題点の記載の中で述べたごとく蒸発器が設けられ
、ヒータコア１６が蒸発器と熱的に関わり合いを持ちな
がら機能するものであっても良いことは言うまでもない
。寸だ流量可変弁１７および対流防止弁１８はそれぞれ
配管途上に設けるものとしたが、これらをヒータコア１
６の極めて近傍あるいはヒータコア１６の出入口管に一
体型として設けるものとしても良いことも言うまでもな
い。As mentioned in the description of the configuration of the conventional example and its problems, an evaporator is provided on the air upstream side of the heater core 16, and the heater core 16 functions while being thermally related to the evaporator. Needless to say, it's a good thing. The variable flow rate valve 17 and the convection prevention valve 18 are each installed in the middle of the piping, but they are connected to the heater core 1.
Needless to say, the heater core 16 may be provided very close to the heater core 16 or as an integrated type in the inlet/outlet pipe of the heater core 16.
発明の効果
このように本発明の自動車用空気調和機は冷却液糸路形
態に関わりなくヒータコアの上流側に流量可変弁、同下
流側に対流防止弁とを設けるものであるため、管路の高
温冷却液部分からヒータコアへの不必要な自然対流や伝
導による熱漏洩が防止でき、ヒータコアの空気上流側に
設けられる蒸発器による冷却効果を損うことなく省エネ
ルギ化が図られる。また送風運転状態にあっても、ヒー
タコアを通過する空気流に対し不必要な加熱作用を及ぼ
すことを無くすことができ、乗員にとっての人体の温熱
感覚上の不快感を防止できるという特徴も奏している。Effects of the Invention As described above, the automotive air conditioner of the present invention is provided with a variable flow rate valve on the upstream side of the heater core and a convection prevention valve on the downstream side of the heater core, regardless of the shape of the coolant line. Heat leakage due to unnecessary natural convection or conduction from the high-temperature coolant portion to the heater core can be prevented, and energy savings can be achieved without impairing the cooling effect of the evaporator provided on the air upstream side of the heater core. In addition, even in the ventilation operation state, it is possible to eliminate unnecessary heating effects on the airflow passing through the heater core, and it is also possible to prevent discomfort from the thermal sensation of the human body for the occupants. There is.
第１図は従来の空気調和装置の要部を示す断面図、第２
図は同系統図、第３図は本発明の一実施例における自動
車用空気調和装置の系統図、第４図は本発明の他の実施
例における同系統図である。
１２・・・・・・エンジン、１１・・・・・冷却液ポン
プ、１３・・・・・・ラジェータ、１６・・・・・ヒー
タコア、１７・・・・流量可変弁、１８・・・・・対流
防止弁。
代理人の氏名 弁理士 中 尾 敏 男 はが１名第１
図
第２図Figure 1 is a sectional view showing the main parts of a conventional air conditioner;
3 is a system diagram of an air conditioner for an automobile according to one embodiment of the present invention, and FIG. 4 is a system diagram of the same system according to another embodiment of the present invention. 12... Engine, 11... Coolant pump, 13... Radiator, 16... Heater core, 17... Variable flow rate valve, 18...・Convection prevention valve. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 2
Claims (1)
液を循環させる冷却液ポンプと、前記冷却液の熱量を車
外へ放熱するラジェータと、前記冷却液の熱量を車室内
へ放熱するヒータコアと、前記ヒータコアの冷却液入口
側に設けられた流量可変弁と、前記ヒータコアの前記冷
却液出口側に設けられた対流防止弁とからなる自動車用
空気調和装置。An engine that generates power and heats a coolant; a coolant pump that circulates the coolant; a radiator that radiates heat from the coolant to the outside of the vehicle; and a heater core that radiates heat from the coolant into the vehicle interior. An air conditioner for an automobile comprising: a variable flow rate valve provided on the coolant inlet side of the heater core; and a convection prevention valve provided on the coolant outlet side of the heater core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20301383A JPS6094815A (en) | 1983-10-28 | 1983-10-28 | Air conditioner of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20301383A JPS6094815A (en) | 1983-10-28 | 1983-10-28 | Air conditioner of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6094815A true JPS6094815A (en) | 1985-05-28 |
Family
ID=16466888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20301383A Pending JPS6094815A (en) | 1983-10-28 | 1983-10-28 | Air conditioner of vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6094815A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111452590A (en) * | 2020-04-13 | 2020-07-28 | 宁波奥克斯电气股份有限公司 | Automobile air conditioner control method and device and air conditioner |
-
1983
- 1983-10-28 JP JP20301383A patent/JPS6094815A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111452590A (en) * | 2020-04-13 | 2020-07-28 | 宁波奥克斯电气股份有限公司 | Automobile air conditioner control method and device and air conditioner |
| CN111452590B (en) * | 2020-04-13 | 2021-06-25 | 宁波奥克斯电气股份有限公司 | Automobile air conditioner control method and device and air conditioner |
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