JPH10119729A - Dew condensation detecting method and vehicle rear air conditioner applying this dew condensation detecting method - Google Patents
Dew condensation detecting method and vehicle rear air conditioner applying this dew condensation detecting methodInfo
- Publication number
- JPH10119729A JPH10119729A JP8280644A JP28064496A JPH10119729A JP H10119729 A JPH10119729 A JP H10119729A JP 8280644 A JP8280644 A JP 8280644A JP 28064496 A JP28064496 A JP 28064496A JP H10119729 A JPH10119729 A JP H10119729A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- outside air
- window glass
- dew
- dew condensation
- 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
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00785—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models by the detection of humidity or frost
-
- 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
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
-
- 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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
- B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
- B60S1/0862—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means including additional sensors
- B60S1/0866—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means including additional sensors including a temperature sensor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
- B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
- B60S1/0862—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means including additional sensors
- B60S1/087—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means including additional sensors including an ambient light sensor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/56—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens
- B60S1/58—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for rear windows
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車の窓ガラ
ス、特にその外面に発生する結露を検出する方法と、こ
の結露検出方法を適用した車両用空調装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting dew condensation on a window glass of an automobile, particularly, an outer surface thereof, and an air conditioner for a vehicle to which the dew detection method is applied.
【０００２】[0002]
【従来の技術】従来、自動車の窓ガラス内面での結露の
発生を検出する方法として、例えば、特開平５−３４５
５１５号公報に開示のものがある。このものでは、車内
に設けた内気センサと湿度センサの検出結果から露点温
度を算出する。そして、この露点温度と、外気温度又は
窓ガラス近傍温度とに基づいて結露発生の可能性を推測
し、結露の可能性があれば、冷却器の能力を増加させ、
絶対湿度を下げることにより除湿する。2. Description of the Related Art Conventionally, as a method for detecting the occurrence of dew condensation on the inner surface of a window glass of an automobile, for example, Japanese Unexamined Patent Publication No.
There is one disclosed in Japanese Patent Publication No. 515. In this method, the dew point temperature is calculated from the detection results of the inside air sensor and the humidity sensor provided in the vehicle. Then, based on the dew point temperature and the outside air temperature or the temperature near the window glass, the possibility of dew condensation is estimated, and if there is a possibility of dew condensation, the capacity of the cooler is increased,
Dehumidify by lowering the absolute humidity.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記方
法では、結露の可能性がある場合、全て除湿を行うよう
にしているため、現実には結露していないにも拘わら
ず、除湿制御を行うことがある。一般に、除湿する場合
には、窓ガラスに直接送風する等の通常の車内空調とは
異なる制御により対処するため、車内暖房中であるにも
拘わらず冷風が吹き出す等、乗員が不快感を受ける頻度
が高くなりやすい。However, in the above method, when there is a possibility of dew condensation, dehumidification is performed entirely, so that dehumidification control is performed even though no dew condensation actually occurs. There is. Generally, in the case of dehumidification, the occupants often experience discomfort, such as blowing out cool air while the vehicle is being heated, in order to cope with it by controlling the air conditioning system differently from normal in-vehicle air conditioning, such as by blowing air directly to the window glass. Tends to be high.
【０００４】また、前記方法では、窓ガラス内面の結露
検出を行うのみであり、車両後方用空調装置によりリア
ガラスの外面に発生する恐れのある結露の検出及び結露
の除去は不可能である。すなわち、従来は、主に冬場に
窓ガラスの内面に発生する結露を検出し、除去する制御
しか行っておらず、夏場窓ガラスの外面に発生する結露
については何等対策されていなかった。特に、近年のリ
アクーラーの普及により、リアガラスの外面に発生する
結露の検出及び除去は重要である。Further, in the above-mentioned method, only dew condensation on the inner surface of the window glass is detected, and it is impossible to detect dew condensation and remove dew condensation which may be generated on the outer surface of the rear glass by the vehicle rear air conditioner. That is, conventionally, only control for detecting and removing the dew condensation generated on the inner surface of the window glass mainly in the winter season has been performed, and no measures have been taken against dew condensation generated on the outer surface of the window glass in the summer season. Particularly, with the recent spread of rear coolers, it is important to detect and remove dew condensation generated on the outer surface of the rear glass.
【０００５】そこで、本発明は、外面の結露を確実に検
出できる結露検出方法及び窓ガラス外面に発生した結露
であっても除去可能な車両後方用空調装置を提供するこ
とを課題とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a dew condensation detecting method capable of reliably detecting dew condensation on an outer surface and an air conditioner for a vehicle rear that can remove dew condensation generated on the outer surface of a window glass.
【０００６】[0006]
【課題を解決するための手段】前記課題を達成するた
め、本発明では、少なくとも外気温度に基づいて窓ガラ
ス外面の初期表面温度を推測し、該初期表面温度と窓ガ
ラス内面の表面温度の差及び前記初期表面温度に基づい
て窓ガラス外面の安定表面温度を推測する一方、少なく
とも外気温度に基づいて外気露点温度を推測することに
より、前記窓ガラス外面の安定表面温度と外気露点温度
とに基づいて窓ガラス外面での結露の有無を推測するよ
うにしたものである。In order to achieve the above object, according to the present invention, an initial surface temperature of an outer surface of a window glass is estimated based on at least an outside air temperature, and a difference between the initial surface temperature and a surface temperature of an inner surface of the window glass is estimated. While estimating the stable surface temperature of the window glass outer surface based on the initial surface temperature, and estimating the external air dew point temperature based on at least the external air temperature, based on the stable surface temperature of the window glass outer surface and the external air dew point temperature. This is to estimate the presence or absence of condensation on the outer surface of the window glass.
【０００７】また、少なくとも外気温度に基づいて窓ガ
ラス外面の初期表面温度を推測し、該初期表面温度と窓
ガラス内面の表面温度の差及び前記初期表面温度に基づ
いて窓ガラス内面の安定表面温度を推測する一方、少な
くとも内気温度に基づいて内気露点温度を推測すること
により、前記窓ガラス内面の安定表面温度と内気露点温
度とに基づいて窓ガラス内面での結露の有無を推測する
ようにしたものである。Further, an initial surface temperature of the outer surface of the window glass is estimated based on at least an outside air temperature, and a stable surface temperature of the inner surface of the window glass is determined based on a difference between the initial surface temperature and the surface temperature of the inner surface of the window glass. On the other hand, by estimating the inside air dew point temperature based on at least the inside air temperature, the presence or absence of dew condensation on the inside surface of the window glass was estimated based on the stable surface temperature of the inside surface of the window glass and the inside air dew point temperature. Things.
【０００８】前記初期表面温度の推測は、さらに日射量
とに基づいて行うのが好ましい。It is preferable that the estimation of the initial surface temperature is further performed based on the amount of solar radiation.
【０００９】前記外気露点温度の推測は、さらに外気湿
度とに基づいて行うのが好ましい。It is preferable that the estimation of the outside air dew point temperature is further performed based on the outside air humidity.
【００１０】前記内気露点温度の推測は、さらに内気湿
度とに基づいて行うのが好ましい。It is preferable that the estimation of the inside air dew point temperature is further performed based on the inside air humidity.
【００１１】また、前記課題を達成するため、本発明で
は、車両後方用空調装置を、少なくとも、外気温度を検
出する外気センサと、車内温度を検出する内気センサと
を備え、少なくとも外気温度に基づいて窓ガラス外面の
初期表面温度を推測し、該窓ガラス外面の初期表面温度
と、該初期表面温度と窓ガラス内面の表面温度の差とに
基づいて窓ガラス外面の安定表面温度を推測する一方、
少なくとも外気温度に基づいて外気露点温度を推測する
ことにより、前記窓ガラス外面の安定表面温度と外気露
点温度とに基づいて窓ガラス外面での結露の有無を推測
する結露検出手段と、該結露検出手段により結露有りと
検出されると、結露除去操作を行わせる結露除去手段と
を備えた構成としたものである。In order to achieve the above object, according to the present invention, a vehicle rear air conditioner is provided with at least an outside air sensor for detecting an outside air temperature and an inside air sensor for detecting an inside temperature of the vehicle. To estimate the initial surface temperature of the windowpane outer surface, and to estimate the stable surface temperature of the windowpane outer surface based on the initial surface temperature of the windowpane outer surface and the difference between the initial surface temperature and the surface temperature of the windowpane inner surface. ,
Dew point estimating the outside air dew point temperature based on at least the outside air temperature to thereby estimate the presence or absence of dew condensation on the outside surface of the window glass based on the stable surface temperature of the outside surface of the window glass and the outside air dew point temperature; The apparatus is provided with a dew-condensation removing means for performing a dew-condensation removing operation when the dew-condensation is detected by the means.
【００１２】また、日射量を検出する日射センサを設
け、前記結露検出手段では、外気温度と日射量とに基づ
いて窓ガラス外面の初期表面温度を推測するようにする
のが好ましい。Preferably, a solar radiation sensor for detecting the amount of solar radiation is provided, and the dew condensation detecting means estimates the initial surface temperature of the outer surface of the window glass based on the outside air temperature and the amount of solar radiation.
【００１３】さらに、外気湿度を検出する外気湿度セン
サを設け、前記結露検出手段では、外気温度と外気湿度
とに基づいて外気露点温度を推測するようにするのが好
ましい。Further, it is preferable that an outside air humidity sensor for detecting outside air humidity is provided, and the dew condensation detecting means estimates the outside air dew point temperature based on the outside air temperature and the outside air humidity.
【００１４】なお、前記窓ガラス外面の結露除去制御と
しては、窓ガラスへの送風温度を上昇させたり、送風を
停止したり、窓ガラスを直接加熱すればよい。The dew condensation on the outer surface of the window glass can be controlled by raising the temperature of air blown to the window glass, stopping the air blow, or directly heating the window glass.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施の形態を添付
図面に従って説明する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１６】図１は、本実施の形態に係る車両用空調装
置のブロック図である。この車両用空調装置では、外気
センサ１、日射センサ２、内気センサ３、外気湿度セン
サ４から制御装置５に検出信号が入力され、ファンモー
タ６等が駆動制御されるようになっている。FIG. 1 is a block diagram of a vehicle air conditioner according to the present embodiment. In this vehicle air conditioner, a detection signal is input from the outside air sensor 1, the solar radiation sensor 2, the inside air sensor 3, and the outside air humidity sensor 4 to the control device 5, and the drive of the fan motor 6 and the like is controlled.
【００１７】前記外気センサ１は、車両前方部に配設さ
れ、外気温度を検出する。日射センサ２は、車内前方の
ダッシュボードに配設され、日射量を検出する。内気セ
ンサ３は、車内前方部に配設され、内気温度を検出す
る。外気湿度センサ４は、車外前方部に配設され、外気
湿度を検出する。The outside air sensor 1 is disposed at the front of the vehicle and detects the outside air temperature. The solar radiation sensor 2 is disposed on a dashboard in front of the vehicle, and detects the amount of solar radiation. The inside air sensor 3 is provided at a front part inside the vehicle and detects the inside air temperature. The outside air humidity sensor 4 is disposed at the front outside of the vehicle, and detects outside air humidity.
【００１８】前記ファンモータ６はクロスフローファン
７を駆動するためのもので、このクロスフローファン７
は、車内後方のリアパネル８に装着された空調ユニット
９（図２参照）内に収容されている。空調ユニット９内
には、前記クロスフローファン７のほかに、その上流側
に熱交換器１０が収容されている。この熱交換器１０
は、車両前方用空調装置の空調ユニット１１内に配設さ
れたエバポレータ（図示せず）と並列接続され、コンプ
レッサ（図示せず）の駆動で内部を冷媒が流動するよう
になっている。吸引口９ａより空調ユニット９内に流入
した車内の空気は、熱交換器１０によって冷却・除湿さ
れた後、クロスフローファン７により温調ボックス１２
内に送り込まれる。そして、温調ボックス１２内に収容
された飲料用缶類、果物等を冷却した後、送風口１２ａ
より車内に送風される。The fan motor 6 is for driving the cross flow fan 7.
Are housed in an air conditioning unit 9 (see FIG. 2) mounted on a rear panel 8 at the rear of the vehicle. In the air conditioning unit 9, in addition to the cross flow fan 7, a heat exchanger 10 is housed on the upstream side. This heat exchanger 10
Is connected in parallel with an evaporator (not shown) provided in the air conditioning unit 11 of the vehicle front air conditioner, and a refrigerant flows inside by driving a compressor (not shown). The air inside the vehicle that has flowed into the air conditioning unit 9 from the suction port 9 a is cooled and dehumidified by the heat exchanger 10, and then cooled by the cross flow fan 7 to the temperature control box 12.
Sent inside. After cooling the beverage cans, fruits, and the like stored in the temperature control box 12, the air outlet 12a
It is blown more inside the car.
【００１９】次に、前記構成からなる車両後方用空調装
置におけるリアガラス１３の結露の検出及び除去動作
を、図３のグラフを参照しつつ、図４のフローチャート
に従って説明する。Next, the operation of detecting and removing dew condensation on the rear glass 13 in the vehicle rear air conditioner having the above-described configuration will be described with reference to the graph of FIG. 3 and the flowchart of FIG.
【００２０】すなわち、まず、車内外諸条件を読み込む
（ステップＳ１）。ここでは、前記各センサ１，２，
３，４から、それぞれ外気温度、日射量、内気温度及び
外気湿度を読み込む。That is, first, various conditions inside and outside the vehicle are read (step S1). Here, each of the sensors 1, 2,
The outside air temperature, the amount of solar radiation, the inside air temperature, and the outside air humidity are read from 3 and 4, respectively.
【００２１】そして、最初に、外気温度と日射量から図
３の右下のグラフに従ってリアガラス１３外面の初期表
面温度を推測する（ステップＳ２）。ここで、初期表面
温度とは、車内外で温度差がない場合のリアガラス１３
外面の表面温度を意味する。初期表面温度を考慮したの
は、外気温度に追随して変化するだけでなく、日射量の
影響を受けてリアガラス１３自身の温度が変化するから
である。したがって、日射量がなければ、初期表面温度
は外気温度と同一であり、日射量の増減に伴って外気温
度に対して初期表面温度が昇降するものと推測する。First, the initial surface temperature of the outer surface of the rear glass 13 is estimated from the outside air temperature and the amount of solar radiation in accordance with the graph at the lower right of FIG. 3 (step S2). Here, the initial surface temperature refers to the rear glass 13 when there is no temperature difference inside and outside the vehicle.
Means the surface temperature of the outer surface. The reason for considering the initial surface temperature is that not only does the temperature change following the outside air temperature, but also the temperature of the rear glass 13 itself changes under the influence of the amount of solar radiation. Therefore, if there is no solar radiation, the initial surface temperature is the same as the outside air temperature, and it is assumed that the initial surface temperature rises and falls with respect to the outside air temperature as the solar radiation increases or decreases.
【００２２】次に、このようにして求めた初期表面温度
と、この初期表面温度と窓ガラス内面の表面温度の差と
に基づいて図３の右上のグラフに従ってリアガラス１３
外面の安定表面温度を推測する（ステップＳ３）。ここ
で、窓ガラス内面の表面温度には、内気センサ３で検出
した内気温度と等しいものと判断し、その検出温度を使
用する。但し、実験等で、内気センサ３での検出温度
と、実際の窓ガラス内面の表面温度との間の関係を求め
ることにより、窓ガラス内面の表面温度を推測するよう
にしてもよい。また、前記安定表面温度とは、窓ガラス
外面と内面の表面温度差による熱伝達の影響を考慮した
場合のリアガラス１３外面の温度を意味する。つまり、
窓ガラス外面温度と内面温度の差に応じてリアガラス１
３の外面温度も変化するものと推測する。したがって、
窓ガラス内外面の温度差がなければ、初期表面温度とリ
アガラス１３外面の温度とは同一であり、この差の増減
に従ってリアガラス１３の外面温度は昇降するものと推
測する。Next, based on the initial surface temperature obtained in this manner and the difference between the initial surface temperature and the surface temperature of the inner surface of the window glass, the rear glass 13 is shown in the upper right graph of FIG.
The stable surface temperature of the outer surface is estimated (step S3). Here, it is determined that the surface temperature of the inner surface of the window glass is equal to the inside air temperature detected by the inside air sensor 3, and the detected temperature is used. However, the surface temperature of the inner surface of the window glass may be estimated by obtaining the relationship between the temperature detected by the inside air sensor 3 and the actual surface temperature of the inner surface of the window glass through an experiment or the like. The term “stable surface temperature” means the temperature of the outer surface of the rear glass 13 in consideration of the effect of heat transfer due to the surface temperature difference between the outer surface and the inner surface of the window glass. That is,
Rear glass 1 according to the difference between the outside temperature and the inside temperature of the window glass
It is assumed that the outer surface temperature of No. 3 also changes. Therefore,
If there is no temperature difference between the inner and outer surfaces of the window glass, the initial surface temperature and the temperature of the outer surface of the rear glass 13 are the same, and it is assumed that the outer surface temperature of the rear glass 13 rises and falls according to the increase or decrease of this difference.
【００２３】このようにして安定表面温度が決定すれ
ば、外気湿度センサ４で検出された外気湿度に基づいて
図３の左下のグラフに従って露点温度を算出する（ステ
ップＳ４）。そして、安定表面温度と露点温度とを比較
することにより、図３の左上のグラフに従って結露の有
無を判定する（ステップＳ５）。すなわち、安定表面温
度が露点温度よりも高ければ結露は発生せず、低ければ
発生すると判断する。結露が発生すると判断すれば、結
露除去処理としてコンプレッサの駆動を停止する（ステ
ップＳ６）。これにより、車両後方用空調装置からの冷
風の供給が停止し、リアガラス１３が冷却されることが
なくなるので、その外面に発生した曇りが除去されるこ
とになる。この場合、コンプレッサの駆動停止に代え
て、あるいは、駆動停止と共に、ファンモータ６の駆動
を停止又は抑制したり、リアガラス１３に熱線が組み込
まれていれば、その熱線に通電してリアガラス１３を直
接加熱したり、車両用後方空調装置９の送風モードを車
内への送風モードから温調ボックス内循環モードに切り
替えるようにしても構わない。When the stable surface temperature is determined in this manner, the dew point temperature is calculated based on the outside air humidity detected by the outside air humidity sensor 4 according to the graph at the lower left of FIG. 3 (step S4). Then, by comparing the stable surface temperature and the dew point temperature, the presence or absence of dew is determined in accordance with the upper left graph of FIG. 3 (step S5). That is, if the stable surface temperature is higher than the dew point temperature, it is determined that no dew condensation occurs, and if the stable surface temperature is lower than the dew point temperature, it does. If it is determined that dew condensation occurs, the operation of the compressor is stopped as dew condensation removal processing (step S6). As a result, the supply of cool air from the vehicle rear air conditioner is stopped, and the rear glass 13 is not cooled, so that the fogging generated on the outer surface is removed. In this case, the drive of the fan motor 6 is stopped or suppressed instead of or together with the drive stop of the compressor, or if a heat wire is incorporated in the rear glass 13, the heat is supplied to the heat wire to directly drive the rear glass 13. Heating may be performed, or the air blowing mode of the rear air conditioner 9 for a vehicle may be switched from the air blowing mode into the vehicle to the circulation mode in the temperature control box.
【００２４】このように、前記車両用空調装置では、外
気温度、日射量及び窓ガラス内外面温度差に基づいてリ
アガラス１３外面の安定表面温度を推測するようにして
いるので、リアガラス１３の外面温度の実際の温度との
誤差を少なくすることができる。したがって、この安定
表面温度と露点温度とに基づく結露の有無の判断をより
正確に行わせることが可能である。As described above, in the vehicle air conditioner, the stable surface temperature of the outer surface of the rear glass 13 is estimated based on the outside air temperature, the amount of solar radiation, and the temperature difference between the inner and outer surfaces of the window glass. Error from the actual temperature can be reduced. Therefore, it is possible to more accurately determine the presence or absence of dew condensation based on the stable surface temperature and the dew point temperature.
【００２５】なお、前記実施の形態では、リアガラス１
３外面の結露の検出及び結露の除去について説明した
が、リアガラス１３内面の結露の検出及び結露の除去に
ついて適用するようにしてもよい。この場合、内気湿度
センサを設け、この検出湿度と、内気温度に基づいて内
気露点温度を推測し、内気温度及び窓ガラス内外面温度
差とに基づいて窓ガラス内面温度を推測するようにすれ
ばよい。In the above embodiment, the rear glass 1
Although the description has been given of the detection and removal of dew condensation on the outer surface of the third embodiment, the invention may be applied to the detection and removal of dew condensation on the inner surface of the rear glass 13. In this case, an inside air humidity sensor is provided, the detected humidity and the inside air dew point temperature are estimated based on the inside air temperature, and the window glass inner surface temperature is estimated based on the inside air temperature and the difference between the window glass inner and outer surface temperature. Good.
【００２６】また、前記実施の形態では、前記結露検出
及び結露除去制御を、リアガラス１３に適用する場合に
ついて説明したが、フロントガラス１４に適用してもよ
いことは勿論である。Further, in the above-described embodiment, the case where the dew condensation detection and dew condensation removal control are applied to the rear glass 13 has been described.
【００２７】さらに、前記実施の形態では、初期表面温
度を、外気温度に基づき、日射量の違いに応じて図３の
グラフ（右下）に従って推測するようにしたが、日射量
を固定値（例えば、１００（kcal/m2・h）等）として推
測するようにしてもよい。また、露点温度を、外気温度
に基づき、外気湿度の違いに応じて図３のグラフ（左
下）に従って推測するようにしたが、外気湿度を固定値
（例えば、８０％）として推測するようにしてもよい。Further, in the above-described embodiment, the initial surface temperature is estimated according to the difference in the amount of insolation based on the outside air temperature in accordance with the graph (lower right) of FIG. For example, it may be estimated as 100 (kcal / m2 · h). Further, the dew point temperature is estimated based on the outside air temperature according to the difference in the outside air humidity according to the graph of FIG. 3 (lower left), but the outside air humidity is estimated as a fixed value (for example, 80%). Is also good.
【００２８】[0028]
【発明の効果】以上の説明から明らかなように、本発明
に係る結露検出方法によれば、少なくとも外気温度に基
づいて窓ガラスの初期表面温度を推測し、この初期表面
温度と窓ガラスの内面温度との差に基づいて窓ガラスの
安定表面温度を推測するようにしたので、この安定表面
温度と露点温度とに基づいて、正確に窓ガラス外面ある
いは内面の結露の有無を判断することができる。As is clear from the above description, according to the dew condensation detecting method of the present invention, the initial surface temperature of the window glass is estimated based on at least the outside air temperature, and the initial surface temperature and the inner surface of the window glass are estimated. Since the stable surface temperature of the window glass is estimated based on the difference between the temperature and the temperature, the presence or absence of dew condensation on the outer surface or the inner surface of the window glass can be accurately determined based on the stable surface temperature and the dew point temperature. .
【００２９】特に、日射量をも考慮すれば、より正確に
初期表面温度を推測して結露有無の判定精度を高めるこ
とができ、湿度をも考慮すれば、さらにその判定精度を
高めることが可能である。In particular, if the amount of solar radiation is also taken into consideration, the accuracy of the determination of the presence or absence of dew condensation can be increased by more accurately estimating the initial surface temperature, and the determination accuracy can be further increased if the humidity is also taken into consideration. It is.
【００３０】また、このように窓ガラス外面での結露の
有無をも判断することができるので、リアガラスの外面
に結露を発生する恐れのある車両後方用空調装置に適用
して、良好な結露除去を行わせることが可能である。In addition, since the presence or absence of dew condensation on the outer surface of the window glass can be determined in this manner, the present invention is applied to an air conditioner for rear of a vehicle, which may cause dew condensation on the outer surface of the rear glass, so that good dew condensation can be removed. Can be performed.
【図１】 本実施の形態に係る車両後方用空調装置のブ
ロック図である。FIG. 1 is a block diagram of a vehicle rear air conditioner according to the present embodiment.
【図２】 図１の車両後方用空調装置を適用した自動車
の概略図である。FIG. 2 is a schematic view of an automobile to which the vehicle rear air conditioner of FIG. 1 is applied.
【図３】 図１の制御装置で結露判定を行う基準となる
グラフである。FIG. 3 is a graph serving as a reference for determining the dew condensation by the control device of FIG. 1;
【図４】 図１の制御装置による結露検出及び結露除去
制御を示すフローチャートである。FIG. 4 is a flowchart showing dew condensation detection and dew condensation control by the control device of FIG. 1;
１ 外気センサ ２ 日射センサ ３ 内気センサ ４ 外気湿度センサ ５ 制御装置 １３ リアガラス DESCRIPTION OF SYMBOLS 1 Outside air sensor 2 Solar radiation sensor 3 Inside air sensor 4 Outside air humidity sensor 5 Control device 13 Rear glass
Claims (8)
外面の初期表面温度を推測し、該初期表面温度と窓ガラ
ス内面の表面温度の差及び前記初期表面温度に基づいて
窓ガラス外面の安定表面温度を推測する一方、少なくと
も外気温度に基づいて外気露点温度を推測することによ
り、前記窓ガラス外面の安定表面温度と外気露点温度と
に基づいて窓ガラス外面での結露の有無を推測すること
を特徴とする結露検出方法。1. A method for estimating an initial surface temperature of an outer surface of a window glass based on at least an outside air temperature, and a stable surface temperature of an outer surface of the window glass based on a difference between the initial surface temperature and a surface temperature of an inner surface of the window glass. On the other hand, by estimating the outside air dew point temperature based on at least the outside air temperature, the presence or absence of condensation on the outside surface of the window glass is estimated based on the stable surface temperature of the outside surface of the window glass and the outside air dew point temperature. Condensation detection method.
外面の初期表面温度を推測し、該初期表面温度と窓ガラ
ス内面の表面温度の差及び前記初期表面温度に基づいて
窓ガラス内面の安定表面温度を推測する一方、少なくと
も内気温度に基づいて内気露点温度を推測することによ
り、前記窓ガラス内面の安定表面温度と内気露点温度と
に基づいて窓ガラス内面での結露の有無を推測すること
を特徴とする結露検出方法。2. A method for estimating an initial surface temperature of an outer surface of a window glass based on at least an outside air temperature, and a stable surface temperature of an inner surface of the window glass based on a difference between the initial surface temperature and a surface temperature of an inner surface of the window glass. On the other hand, by estimating the inside air dew point temperature based on at least the inside air temperature, the presence or absence of dew condensation on the inside surface of the window glass is estimated based on the stable surface temperature of the inside surface of the window glass and the inside air dew point temperature. Condensation detection method.
量とに基づいて行うことを特徴とする請求項１又は２に
記載の結露検出方法。3. The dew condensation detecting method according to claim 1, wherein the estimation of the initial surface temperature is further performed based on the amount of solar radiation.
湿度とに基づいて行うことを特徴とする請求項１又は３
に記載の結露検出方法。4. The method according to claim 1, wherein the estimation of the outside air dew point temperature is further performed based on the outside air humidity.
Condensation detection method described in.
湿度とに基づいて行うことを特徴とする請求項２又は３
に記載の結露検出方法。5. The inside air dew point temperature is estimated based on inside air humidity.
Condensation detection method described in.
ンサと、車内温度を検出する内気センサとを備え、少な
くとも外気温度に基づいて窓ガラス外面の初期表面温度
を推測し、該窓ガラス外面の初期表面温度と、該初期表
面温度と窓ガラス内面の表面温度の差とに基づいて窓ガ
ラス外面の安定表面温度を推測する一方、少なくとも外
気温度に基づいて外気露点温度を推測することにより、
前記窓ガラス外面の安定表面温度と外気露点温度とに基
づいて窓ガラス外面での結露の有無を推測する結露検出
手段と、該結露検出手段により結露有りと検出される
と、結露除去操作を行わせる結露除去手段とを備えたこ
とを特徴とする車両後方用空調装置。6. At least an outside air sensor for detecting an outside air temperature and an inside air sensor for detecting an inside temperature of a vehicle, estimating an initial surface temperature of an outside surface of the window glass based on at least the outside air temperature, and By estimating the stable surface temperature of the outer surface of the window glass based on the surface temperature and the difference between the initial surface temperature and the surface temperature of the inner surface of the window glass, by estimating the outside air dew point temperature based on at least the outside air temperature,
Dew condensation detecting means for estimating the presence or absence of dew condensation on the outer surface of the window glass based on the stable surface temperature of the outer surface of the window glass and the dew point temperature of the outside air, and performing the dew condensation operation when the dew detecting means detects the presence of dew. An air conditioner for the rear of a vehicle, comprising: a dew-condensation removing means for removing the dew.
記結露検出手段では、外気温度と日射量とに基づいて窓
ガラス外面の初期表面温度を推測するようにしたことを
特徴とする請求項６に記載の車両後方用空調装置。7. A solar radiation sensor for detecting an amount of solar radiation, wherein the dew condensation detecting means estimates an initial surface temperature of the outer surface of the window glass based on the outside air temperature and the amount of solar radiation. 7. A vehicle rear air conditioner according to 6.
け、前記結露検出手段では、外気温度と外気湿度とに基
づいて外気露点温度を推測するようにしたことを特徴と
する請求項６又は７に記載の車両後方用空調装置。8. An outside air humidity sensor for detecting outside air humidity, wherein said dew condensation detecting means estimates the outside air dew point temperature based on the outside air temperature and the outside air humidity. The air conditioner for rear of a vehicle according to claim 1.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8280644A JPH10119729A (en) | 1996-10-23 | 1996-10-23 | Dew condensation detecting method and vehicle rear air conditioner applying this dew condensation detecting method |
| KR1019970045382A KR100329912B1 (en) | 1996-10-23 | 1997-09-01 | Dewing Detecting Mothod And Air-Conditioning Apparatus For Rear of the Vehicle Adaping It |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8280644A JPH10119729A (en) | 1996-10-23 | 1996-10-23 | Dew condensation detecting method and vehicle rear air conditioner applying this dew condensation detecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10119729A true JPH10119729A (en) | 1998-05-12 |
Family
ID=17627932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8280644A Pending JPH10119729A (en) | 1996-10-23 | 1996-10-23 | Dew condensation detecting method and vehicle rear air conditioner applying this dew condensation detecting method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH10119729A (en) |
| KR (1) | KR100329912B1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6848209B2 (en) | 2000-12-08 | 2005-02-01 | Fuji Kogyo Co., Ltd. | Reel seat for fishing rod and fishing rod incorporating the reel seat |
| US7210523B2 (en) | 2003-03-11 | 2007-05-01 | Denso Corporation | Vehicle air conditioner |
| US7269963B2 (en) * | 2003-12-04 | 2007-09-18 | Keihin Corporation | Vehicle air conditioning apparatus |
| JP2010167895A (en) * | 2009-01-22 | 2010-08-05 | Sanden Corp | Air conditioner for vehicle |
| KR101218891B1 (en) * | 2010-12-13 | 2013-01-07 | 갑을오토텍(주) | Apparatus for preventing condensation and Controlling method using the same |
| US9528930B2 (en) | 2013-01-21 | 2016-12-27 | Denso Corporation | Adhering matter determination device |
| FR3104070A1 (en) * | 2019-12-10 | 2021-06-11 | Psa Automobiles Sa | Method for regulating the temperature in a motor vehicle interior |
| JP2023007722A (en) * | 2021-07-02 | 2023-01-19 | 本田技研工業株式会社 | Anti-fog system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102392806B1 (en) * | 2019-08-28 | 2022-05-02 | 인천대학교 산학협력단 | System and Method for Predicting Indoor Surface Temperature and Indoor Condensation Using Machine Learning |
-
1996
- 1996-10-23 JP JP8280644A patent/JPH10119729A/en active Pending
-
1997
- 1997-09-01 KR KR1019970045382A patent/KR100329912B1/en not_active IP Right Cessation
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6848209B2 (en) | 2000-12-08 | 2005-02-01 | Fuji Kogyo Co., Ltd. | Reel seat for fishing rod and fishing rod incorporating the reel seat |
| US7210523B2 (en) | 2003-03-11 | 2007-05-01 | Denso Corporation | Vehicle air conditioner |
| US7269963B2 (en) * | 2003-12-04 | 2007-09-18 | Keihin Corporation | Vehicle air conditioning apparatus |
| JP2010167895A (en) * | 2009-01-22 | 2010-08-05 | Sanden Corp | Air conditioner for vehicle |
| KR101218891B1 (en) * | 2010-12-13 | 2013-01-07 | 갑을오토텍(주) | Apparatus for preventing condensation and Controlling method using the same |
| US9528930B2 (en) | 2013-01-21 | 2016-12-27 | Denso Corporation | Adhering matter determination device |
| FR3104070A1 (en) * | 2019-12-10 | 2021-06-11 | Psa Automobiles Sa | Method for regulating the temperature in a motor vehicle interior |
| JP2023007722A (en) * | 2021-07-02 | 2023-01-19 | 本田技研工業株式会社 | Anti-fog system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100329912B1 (en) | 2002-08-21 |
| KR19980032359A (en) | 1998-07-25 |
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