JP4329522B2 - Air conditioner for moving body - Google Patents

Air conditioner for moving body Download PDF

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JP4329522B2
JP4329522B2 JP2003413784A JP2003413784A JP4329522B2 JP 4329522 B2 JP4329522 B2 JP 4329522B2 JP 2003413784 A JP2003413784 A JP 2003413784A JP 2003413784 A JP2003413784 A JP 2003413784A JP 4329522 B2 JP4329522 B2 JP 4329522B2
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outside air
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gas sensor
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JP2005170255A (en
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誠 坂巻
幸哉 佐々
一成 前田
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Denso Corp
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    • 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
    • B60H1/008—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 the input being air quality

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Description

本発明は、少なくとも室外空気の状態を検知して外気導入と内気循環の選択を自動で行う内外気切替機能を備えた移動体用空調装置に関する。   The present invention relates to a moving body air conditioner having an inside / outside air switching function that detects at least the state of outdoor air and automatically selects outside air introduction and inside air circulation.

従来、自動内外気切替機能を備えた車両用空調装置によれば、車室内にいる乗員が排気ガス等の臭気を感じないようにするために、排気ガスセンサを用い、排気ガス中の特定ガス、例えばＣＯ、ＨＣなどのいわゆる還元性ガス、またはＮＯｘなどの酸化性ガスのガス濃度を検知している。そして予め設定した閾値等を用いて検知したガス濃度を評価し、室外空気中に所定量を超える排気ガス濃度を検知した場合に、空調装置の内外気切替ドアを自動で内気循環側にして、室外のガスや臭気が室内に侵入するのを防止する技術が知られている（特許文献１、２参照）。
特開２００３−８０９２６号公報 特開２００２−２２６９３号公報 Conventionally, according to a vehicle air conditioner equipped with an automatic inside / outside air switching function, an exhaust gas sensor is used to prevent a passenger in the vehicle from feeling an odor such as exhaust gas, and a specific gas in the exhaust gas, For example, the gas concentration of a so-called reducing gas such as CO or HC or an oxidizing gas such as NOx is detected. And evaluate the gas concentration detected using a preset threshold, etc., and when the exhaust gas concentration exceeding a predetermined amount is detected in the outdoor air, the inside / outside air switching door of the air conditioner is automatically set to the inside air circulation side, Techniques for preventing outdoor gases and odors from entering the room are known (see Patent Documents 1 and 2).
JP 2003-80926 A Japanese Patent Laid-Open No. 2002-22893

しかしながら、車室内にいる乗員が臭気を感じるガス濃度のレベルにはバラツキがあり、予め設定した閾値を用いたのでは多様な乗員の好みに合わなくなる恐れがある。このことは自動車に限らずバス、軌道車両、船舶等の移動体にも共通するところがある。ちなみに、最近は排気ガス成分の他に、工場や農場等が発生原因とされるアンモニアや硫化水素などの臭気や有害ガスを検知したり、例えば森林の匂いなどの香気を検知するガスセンサが開発され、多種多様な匂いを検知することが可能になってきている。   However, there are variations in the level of gas concentration at which occupants in the vehicle feel odors, and using preset threshold values may not suit various passenger preferences. This is common not only to automobiles but also to moving bodies such as buses, track vehicles, and ships. By the way, recently, in addition to exhaust gas components, gas sensors have been developed that detect odors and harmful gases such as ammonia and hydrogen sulfide, which are caused by factories and farms, and detect odors such as forest odors. It has become possible to detect a wide variety of odors.

本発明は、上記点を考慮してなされたものであり、外気導入と内気循環を自動選択するにあたり、乗員の好みに合わせて自動選択することが可能な移動体用空調装置を提供することを目的とする。   The present invention has been made in consideration of the above points, and provides an air conditioner for a moving body that can be automatically selected according to passengers' preference when automatically selecting outside air introduction and inside air circulation. Objective.

上記目的を達成するため、請求項１ないし請求項１０に記載の技術的手段を採用する。 In order to achieve the above object, the technical means described in claims 1 to 10 are employed.

請求項１記載の発明によれば、外気中に含まれる匂いおよび／またはガス成分を検知するガスセンサと、移動体の室内への外気導入と内気循環とを切り替える内外気切替手段と、この内外気切替手段による内外気切替を手動で指示する内外気切替スイッチと、ガスセンサの検知信号と、この検知信号を評価する閾値とに基いて、内外気切替手段による内外気切替を制御する制御手段とを備え、制御手段は、前記ガスセンサの前記検知信号を、検知した時系列関係が分かる形で記憶する記憶装置を有し、内外気切替スイッチより内外気指示信号を受けたとき、前記ガスセンサが検知してから前記移動体の室内に入るまでの外気移動時間だけ以前の前記検知信号を前記記憶装置より読み出し、この読み出した検知信号の大きさに応じて閾値を修正することを特徴とする。 According to the first aspect of the present invention, the gas sensor for detecting the odor and / or gas component contained in the outside air, the inside / outside air switching means for switching between the introduction of outside air into the room of the moving body and the inside air circulation, and the inside / outside air An inside / outside air switching switch for manually instructing the inside / outside air switching by the switching means, and a control means for controlling the inside / outside air switching by the inside / outside air switching means based on a detection signal of the gas sensor and a threshold value for evaluating the detection signal. And the control means has a storage device for storing the detection signal of the gas sensor in a form in which the detected time-series relationship is understood, and the gas sensor detects when the inside / outside air instruction signal is received from the inside / outside air changeover switch. It said mobile read from the storage device only previous said detection signal outside air time to enter the chamber, fix the threshold according to the magnitude of the detection signal readout from And wherein the Rukoto.

それにより、移動体の乗員が手動で内外気切替する時点の検知信号の大きさ、つまり外気中に含まれる匂いやガス成分の濃度に応じた閾値に修正できるため、乗員の好みに合った外気のガス濃度状態で内外気の自動切替が可能となる。
また、乗員が不快もしくは快適と感じる匂いやガス成分の状態を確実に捉えて評価することが可能となり、自動内外気切替タイミングを的確にし、より一層乗員の好みに合わせることが可能となる。 As a result, it is possible to correct the detection signal when the mobile occupant manually switches between inside and outside air, that is, to a threshold value corresponding to the concentration of odors and gas components contained in the outside air. It becomes possible to automatically switch between the inside and outside air in the state of the gas concentration.
In addition, it is possible to reliably grasp and evaluate the state of the odor or gas component that the occupant feels uncomfortable or comfortable, and the automatic internal / external air switching timing can be accurately determined to further match the occupant's preference.

請求項２記載の発明によれば、外気中に含まれる複数の匂いおよび／またはガス成分を検知する複数のガスセンサと、移動体の室内への外気導入と内気循環とを切り替える内外気切替手段と、この内外気切替手段による内外気切替を手動で指示する内外気切替スイッチと、複数のガスセンサの各検知信号の大きさと、乗員の許容状態を設定する各閾値とを比較し、その比較結果に応じて内外気切替手段による内外気切替を制御する制御手段とを備え、制御手段は、前記ガスセンサの前記検知信号を、検知した時系列関係が分かる形で記憶する記憶装置を有し、内外気切替スイッチより内外気指示信号を受けたとき、前記ガスセンサが検知してから前記移動体の室内に入るまでの外気移動時間だけ以前の前記検知信号を前記記憶装置より読み出し、この読み出した検知信号の大きさに応じて閾値を修正することを特徴とする。 According to the second aspect of the present invention, the plurality of gas sensors for detecting a plurality of odors and / or gas components contained in the outside air, and the inside / outside air switching means for switching between introduction of outside air into the room of the moving body and circulation of the inside air. The inside / outside air switching switch for manually instructing the inside / outside air switching by the inside / outside air switching means is compared with the magnitude of each detection signal of the plurality of gas sensors and each threshold value for setting the occupant's permissible state. And a control unit that controls the switching between the inside and outside air by the inside / outside air switching unit, and the control unit has a storage device that stores the detection signal of the gas sensor in a form in which the detected time-series relationship is understood, when subjected to external air instruction signal from the changeover switch, leaving the previous said detection signal by the external air travel time from the gas sensor detects before entering the chamber of the movable body read from the storage device Characterized by modifying the threshold in accordance with the magnitude of the readout detection signal.

それにより、移動体の乗員が手動で内外気切替する時点の検知信号の大きさ、つまり外気中に含まれる複数の匂いやガス成分毎に濃度に応じて対応する各閾値に修正できるため、複数の匂いやガス成分にきめ細かく対応させて、乗員の好みに合った外気のガス濃度状態で内外気の自動切替が可能となる。
また、乗員が不快もしくは快適と感じる匂いやガス成分の状態を確実に捉えて評価することが可能となり、自動内外気切替タイミングを的確にし、より一層乗員の好みに合わせることが可能となる。 As a result, the magnitude of the detection signal at the time when the occupant of the mobile body manually switches between the inside and outside air, that is, the plurality of odors and gas components contained in the outside air can be corrected to corresponding thresholds according to the concentration, The inside and outside air can be automatically switched in a gas concentration state of the outside air that matches the occupant's preference in a minute manner.
In addition, it is possible to reliably grasp and evaluate the state of the odor or gas component that the occupant feels uncomfortable or comfortable, and the automatic internal / external air switching timing can be accurately determined to further match the occupant's preference.

請求項３記載の発明によれば、制御手段は、内外気指示信号を受けたとき、外気移動時間だけ以前の検知信号を記憶装置より読み出し、この読み出した検知信号の大きさに閾値を更新することで、その後はこの匂いやガス成分の濃度状態でもって自動内外気切替を行うことが可能となり、より一層乗員の好みに合わせ、乗員が手動で内外気切替を行うことを少なくすることが可能になる。 According to the invention of claim 3 , when the control means receives the inside / outside air instruction signal, the control means reads the previous detection signal from the storage device for the outside air movement time, and updates the threshold value to the magnitude of the read detection signal. Then, it becomes possible to perform automatic internal / external air switching according to the concentration state of this odor and gas component, and it is possible to further reduce the passenger's manual switching of internal / external air according to the passenger's preference. become.

請求項４記載の発明によれば、制御手段は、内気循環を示す内外気指示信号を受けたとき、外気移動時間だけ以前の検知信号を記憶装置より読み出し、この読み出した検知信号の中で臭気もしくは有害ガス成分を示す検知信号について、その大きさに閾値を更新することを特徴とする。それにより、その後はこの臭気や有害ガス成分の濃度状態でもって自動内気切替を行うことが可能となり、より一層乗員の好みに合わせ、室内環境を快適にすることが可能となる。 According to the fourth aspect of the present invention, when the control means receives the inside / outside air instruction signal indicating the inside air circulation, the control means reads the previous detection signal from the storage device for the outside air movement time, and the odor is included in the read detection signal. Alternatively, the threshold value is updated to the magnitude of the detection signal indicating the harmful gas component. Thereby, it becomes possible to perform automatic inside air switching with the odor and the concentration state of harmful gas components thereafter, and the indoor environment can be made more comfortable according to the passenger's preference.

請求項５記載の発明によれば、制御手段は、外気導入を示す内外気指示信号を受けたとき、外気移動時間だけ以前の検知信号を記憶装置より読み出し、この読み出した検知信号の中で香気を示す検知信号について、その大きさに閾値を更新することを特徴とする。それにより、その後はこの香気の濃度状態でもって自動内気切替を行うことが可能となり、乗員の好みに合わせてより香気を室内に導入し易くし、室内環境を一層快適にすることが可能となる。 According to the fifth aspect of the present invention, when the control means receives the inside / outside air instruction signal indicating the introduction of outside air, the control means reads out the previous detection signal for the outside air movement time from the storage device, and the aroma in the read detection signal. As for the detection signal indicating, the threshold value is updated to the magnitude thereof. As a result, it is possible to perform automatic inside air switching with the concentration state of the fragrance thereafter, making it easier to introduce the fragrance into the room in accordance with the passenger's preference and making the indoor environment more comfortable. .

請求項６記載の発明によれば、移動体の室内空気（内気）中に含まれる臭気もしくは喫煙を検知する内気ガスセンサを設け、
制御手段は、外気導入を示す内外気指示信号を受けると共に、内気ガスセンサで検知した検知信号に基いて臭気もしくは喫煙が許容範囲内にあるとき、記憶装置に記憶された外気移動時間だけ以前の検知信号の大きさに、閾値を更新することを特徴とする。 According to invention of Claim 6, the inside air gas sensor which detects the odor or smoking contained in the indoor air (inside air) of a moving body is provided,
The control means receives the inside / outside air instruction signal indicating the introduction of outside air, and when the odor or smoking is within the allowable range based on the detection signal detected by the inside air gas sensor, the control means detects only the previous outside air movement time stored in the storage device. The threshold value is updated according to the magnitude of the signal.

それにより、外気導入を示す内外気指示信号を受けたときでも、室内の臭気や喫煙時の換気（外気導入）時を除外し、乗員が快適性向上のために外気導入する機会をより確実に捉えて閾値を更新することが可能となり、より一層乗員の好みに合わせ、室内環境を快適にすることが可能となる。   As a result, even when an inside / outside air instruction signal indicating the introduction of outside air is received, it excludes indoor odors and ventilation during smoking (introduction of outside air), and the occupant has more opportunities to introduce outside air to improve comfort. It is possible to update the threshold value, and to make the indoor environment more comfortable in accordance with the passenger's preference.

請求項７記載の発明によれば、外気中の湿度を検知する湿度センサを設け、
制御手段は、外気導入を示す内外気指示信号を受けると共に、湿度センサで検知した湿度信号に基いて湿度が許容範囲内にあるとき、記憶装置に記憶された外気移動時間だけ以前の検知信号の大きさに閾値を更新することを特徴とする。 According to invention of Claim 7 , the humidity sensor which detects the humidity in external air is provided,
The control means receives the inside / outside air instruction signal indicating the introduction of outside air, and when the humidity is within the allowable range based on the humidity signal detected by the humidity sensor, the control means outputs the previous detection signal for the outside air movement time stored in the storage device. The threshold value is updated to the size.

それにより、外気導入を示す内外気指示信号を受けたときでも、運転視界の確保上、窓曇りを防止するために外気導入する場合を除外するようにし、乗員が快適性向上のために外気導入する機会をより確実に捉えて閾値を更新することが可能となり、より一層乗員の好みに合わせ、室内環境を快適にすることが可能となる。   As a result, even when an inside / outside air instruction signal indicating outside air introduction is received, in order to ensure driving visibility, the case where outside air is introduced to prevent window fogging is excluded, and the outside air is introduced for passengers to improve comfort. It is possible to more reliably capture the opportunity to update the threshold value, and it is possible to further improve the indoor environment according to the passenger's preference.

請求項８記載の発明によれば、移動体の室内空気中に含まれる臭気もしくは喫煙を検知する内気ガスセンサと、外気中の湿度を検知する湿度センサとを設け、
制御手段は、外気導入を示す内外気指示信号を受けたとき、内気ガスセンサで検知した臭気もしくは喫煙の状態、および記湿度センサで検知した湿度の状態のいずれもが許容範囲内にあるとき、閾値を更新することを特徴とする。 According to the invention of claim 8 , an indoor air gas sensor that detects odor or smoking contained in the indoor air of the moving body and a humidity sensor that detects humidity in the outside air are provided,
When the control means receives an inside / outside air instruction signal indicating the introduction of outside air, and the odor or smoking state detected by the inside air gas sensor and the humidity state detected by the humidity sensor are within the allowable range, the control means It is characterized by updating.

それにより、外気導入を示す内外気指示信号を受けたときでも、室内の臭気および喫煙時の換気や窓曇り防止のための外気導入の場合を除き、乗員が快適性向上のために外気導入する機会をより確実に捉えて閾値を更新することが可能となり、より一層乗員の好みに合わせ、室内環境を快適にすることが可能となる。   As a result, even when an inside / outside air instruction signal indicating the introduction of outside air is received, the occupant introduces outside air to improve comfort, except in the case of indoor odor, ventilation during smoking, and outside air introduction to prevent window fogging. It becomes possible to update the threshold value by more surely capturing the opportunity, and it is possible to make the indoor environment more comfortable in accordance with the passenger's preference.

請求項９記載の発明によれば、ガスセンサは、共通の検出体を用いて、外気中に含まれる複数の匂いおよび／またはガス成分を検知するマルチガスセンサで構成され、少ないセンサ数で複数の匂いやガス成分を効果的に検出可能になる。 According to the ninth aspect of the present invention, the gas sensor includes a multi-gas sensor that detects a plurality of odors and / or gas components contained in the outside air using a common detection body, and a plurality of odors with a small number of sensors. And gas components can be detected effectively.

請求項１０記載の発明によれば、ガスセンサは、内外気切替手段の外気取込口の外側近傍に配置され、外気取込口に導入される外気中に含まれる匂いおよび／またはガス成分を検知することで、移動体の室内に導入される可能性の高い外気成分を確実に検知することが可能となる。 According to the invention described in claim 10 , the gas sensor is disposed in the vicinity of the outside of the outside air intake port of the inside / outside air switching means, and detects an odor and / or a gas component contained in the outside air introduced into the outside air intake port. By doing so, it becomes possible to reliably detect an outside air component that is likely to be introduced into the room of the moving body.

以下、本発明の実施形態について図を用いて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（第１実施形態）
図１は、移動体に搭載される空調装置の全体構成図である。 (First embodiment)
FIG. 1 is an overall configuration diagram of an air conditioner mounted on a moving body.

この空調装置は、バス、自動車、軌道車両、船舶等の移動体の室内の温度を乗員により設定された所望温度に保つように自動制御するオートエアコンであり、室内を空調するためのエアコンユニット１００と、このエアコンユニット１００を構成する機器を制御するエアコン制御装置２００を有する。ここでは、移動体として車両に適用した空調装置の構成について説明する。   This air conditioner is an auto air conditioner that automatically controls the room temperature of a moving body such as a bus, automobile, rail vehicle, ship, etc. to maintain a desired temperature set by an occupant, and is an air conditioner unit 100 for air conditioning the room. And an air conditioner control device 200 for controlling the devices constituting the air conditioner unit 100. Here, the configuration of an air conditioner applied to a vehicle as a moving body will be described.

エアコンユニット１００は、インスツルメントパネルの裏面側下方に配置されて、車室内に空調空気を導く空気通路１１を形成する空調ダクト２０を有している。この空調ダクト２０の空気流れの最上流側には内気吸入口２１と外気吸入口２２を有する内外気切替箱Ａが設けられている。これらの吸入口２１、２２の内側には内外気切替ドア２３が回動自在に取り付けられており、この内外気切替ドア２３をサーボモータ等のアクチュエータ４０により駆動することにより、内気循環モード、外気導入モードの間で吸込モードの切替が行われる。   The air conditioner unit 100 has an air conditioning duct 20 that is disposed below the back side of the instrument panel and forms an air passage 11 that guides conditioned air into the passenger compartment. On the most upstream side of the air flow of the air conditioning duct 20, an inside / outside air switching box A having an inside air inlet 21 and an outside air inlet 22 is provided. Inside / outside air switching doors 23 are rotatably mounted inside the suction ports 21 and 22, and the inside / outside air switching doors 23 are driven by an actuator 40 such as a servo motor, thereby enabling an inside air circulation mode and an outside air. The suction mode is switched between the introduction modes.

なお、必要に応じて、内気循環と外気導入の他に、内外気切替ドア２３を内気吸入口２１と外気吸入口２２との中間位置に固定し、外気導入しながら内気循環させる半内気循環（半外気導入）とする構成を設けてもよい。   If necessary, in addition to the inside air circulation and the outside air introduction, the inside / outside air switching door 23 is fixed at an intermediate position between the inside air suction port 21 and the outside air suction port 22 so that the inside air circulation is performed while the outside air is introduced ( You may provide the structure made into semi-outside air introduction).

この空調ダクト２０内の内外気切替箱Ａの下流側には空気を送る遠心式のブロワユニット３０が設けられている。このブロワユニット３０は、空調ダクト２０と一体的に構成されたスクロールケースに回転自在に収納された遠心式ファン３１と、この遠心式ファン３１を回転駆動するブロワモータ３２を有している。この遠心式ファン３１の回転速度（送風量、吹出量）の制御は、ブロワ駆動回路３３を介してブロワモータ３２に印加される電圧を制御することにより行われる。   A centrifugal blower unit 30 for sending air is provided downstream of the inside / outside air switching box A in the air conditioning duct 20. The blower unit 30 includes a centrifugal fan 31 that is rotatably housed in a scroll case that is integrated with the air conditioning duct 20, and a blower motor 32 that rotationally drives the centrifugal fan 31. The rotational speed (the amount of blown air and the amount of blown air) of the centrifugal fan 31 is controlled by controlling the voltage applied to the blower motor 32 via the blower drive circuit 33.

ブロワユニット３０の下流側には、冷凍サイクルの一部を構成するエバポレータ２４が配設され、冷媒と導入された空気との間で熱交換を行うことにより、導入空気を除湿、冷却する。その下流側にはエンジン冷却水が流れるヒ−タコア２５が配設され、除湿、冷却した空気とエンジン冷却水との間で熱交換を行うことでこの空気を加熱する。ヒータコア２５の空気入口側にはエアミックスドア２６が回動自在に配置され、サーボモータ等のアクチュエータ４５により駆動されて、ヒータコア２５を通過する空気量とヒータコア２５を迂回する空気量との割合を調節して所望の空調空気を形成し、車室内に吹出す空調空気の温度を調節する。   An evaporator 24 that constitutes a part of the refrigeration cycle is disposed on the downstream side of the blower unit 30, and the introduced air is dehumidified and cooled by exchanging heat between the refrigerant and the introduced air. A heater core 25 through which engine cooling water flows is disposed on the downstream side, and heat is exchanged between the dehumidified and cooled air and the engine cooling water to heat the air. An air mix door 26 is rotatably disposed on the air inlet side of the heater core 25, and is driven by an actuator 45 such as a servo motor so that the ratio between the amount of air passing through the heater core 25 and the amount of air bypassing the heater core 25 is calculated. It adjusts to form desired conditioned air and adjusts the temperature of the conditioned air blown into the passenger compartment.

空調ダクト２０の空気流れの最下流側には吹出口切替箱Ｂが設けられており、フェイス（ＦＡＣＥ）開口部、フット（ＦＯＯＴ）開口部、デフロスタ（ＤＥＦ）開口部、およびインパネ上面開口部が形成され、これらの開口部にはダクト１２ａ，１３ａ，１４ａ，１５ａが接続されている。それらのダクト１２ａ，１３ａ，１４ａ，１５ａの最下流端には、乗員の上半身側に空調空気を直接送風するセンターおよびサイドの２種類のフェイス吹出口１２、乗員の足元に送風するフット吹出口１３、車両フロントガラス内面の根元側に送風するデフロスタ吹出口１４、およびフェイス吹出口１２とデフロスタ吹出口１４との間のインスツルメントパネルの上面よりフロントガラス内面側を経由して乗員側に空調空気を間接送風するインパネ上面吹出口１５が設けられている。   A blower outlet switching box B is provided on the most downstream side of the air flow of the air conditioning duct 20, and a face (FACE) opening, a foot (FOOT) opening, a defroster (DEF) opening, and an instrument panel upper surface opening are provided. The ducts 12a, 13a, 14a and 15a are connected to these openings. At the most downstream end of these ducts 12a, 13a, 14a, 15a, there are two types of face outlets 12 on the center and side for directly sending conditioned air to the upper body side of the occupant, and a foot outlet 13 for sending air to the feet of the occupant. The defroster outlet 14 that blows air to the base side of the inner surface of the vehicle windshield, and the conditioned air from the upper surface of the instrument panel between the face outlet 12 and the defroster outlet 14 to the passenger side via the inner surface of the windshield An instrument panel upper surface outlet 15 for indirectly blowing air is provided.

各吹出口１２〜１５の内側には、吹出口開閉ドア１６〜１８、および吹出量を調節するドア１９が回動自在に取り付けられており、サーボモータ等のアクチュエータ４１〜４４によりそれぞれ駆動することにより、各吹出口１２〜１５からの空調空気の吹出し、もしくは吹出量が個別に調節できる。また、吹出口モードとして、フェイスモード、バイレベルモード、フットモード、フットデフモード、およびデフモードがあり、後述するエアコン制御装置２００の指示に応じて吹出口モードの切替が行われる。   Inside the air outlets 12 to 15, air outlet open / close doors 16 to 18 and a door 19 for adjusting the air discharge amount are rotatably attached and are driven by actuators 41 to 44 such as servo motors, respectively. Thereby, the blowing of the conditioned air from each blower outlet 12-15, or the blowing amount can be adjusted separately. In addition, as the air outlet mode, there are a face mode, a bi-level mode, a foot mode, a foot differential mode, and a differential mode, and the air outlet mode is switched according to an instruction from the air conditioner control device 200 described later.

エアコン制御装置２００は、その内部に図示しないＣＰＵ、ＲＯＭ、ＲＡＭ等からなるマイクロコンピュータや入出力回路を有している。この制御装置２００内に搭載された記憶装置２０１は、書換え可能な不揮発性メモリ（例えばＥＥＰＲＯＭ、フラッシュメモリ、バックアップＲＡＭ）で構成され、後述する図５、７に示すような各ガスセンサの検知信号データや、各データ毎に判定処理するための各閾値が更新可能に記憶されている。   The air conditioner control device 200 has a microcomputer and an input / output circuit including a CPU, a ROM, a RAM, and the like (not shown). The storage device 201 mounted in the control device 200 is composed of a rewritable nonvolatile memory (for example, EEPROM, flash memory, backup RAM), and detection signal data of each gas sensor as shown in FIGS. In addition, each threshold value for performing determination processing for each data is stored in an updatable manner.

またエアコン制御装置２００には、車室内前面に設けた操作パネル５０の操作信号、例えば内外気切替スイッチ５１を乗員が手動操作、指示することで発生する内外気指示信号、エアコンＯＮ／ＯＦＦ情報、設定温度情報、ブロワ風量手動切替情報、吹出口モード手動切替情報、等が入力される。   The air conditioner control device 200 also includes an operation signal of the operation panel 50 provided on the front surface of the vehicle interior, for example, an inside / outside air instruction signal generated by an occupant manually operating and instructing the inside / outside air changeover switch 51, Setting temperature information, blower air volume manual switching information, outlet mode manual switching information, and the like are input.

エアコン制御装置２００には、さらに各種センサ６１〜６６からのセンサ信号が入力される。ここで各種センサ６１〜６６とは、車室内空気の温度（内気温）を検出する内気温センサ６１、車室外空気の温度（外気温）を検出する外気温センサ６２、車室内に照射される日射量を検出する日射センサ６３、エバポレータ２４下流側空気温度やエンジン冷却水温度を検出する温度センサ６４、車室内の天井部分および内気吸入口２１近傍に配置されて車室内空気中の煙草の煙（喫煙）や匂いを検出する内気ガスセンサ６５、および内外気切替箱Ａの外気吸入口２２の外側近傍もしくは車両のフロントグリルに配置されて、この外気吸入口２２から導入される車室外空気（外気）中に含まれる複数の匂い、例えばアンモニアや硫化水素等の臭気や、森の香りであるα―ピネン、β―ピネン、サビネンなどの香気、および有害ガス成分（ＨＣ、ＣＯ、ＮＯｘ等）を検知する複数のガスセンサの組合わせ、もしくは一体的なマルチガスセンサ６６である。   Further, sensor signals from various sensors 61 to 66 are input to the air conditioner control device 200. Here, the various sensors 61 to 66 are an inside air temperature sensor 61 that detects the temperature (inside air temperature) of the passenger compartment air, an outside air temperature sensor 62 that detects the temperature of the outside air (inside air temperature), and the vehicle interior. A solar sensor 63 for detecting the amount of solar radiation, a temperature sensor 64 for detecting the air temperature downstream of the evaporator 24 and the engine coolant temperature, a cigarette smoke in the air in the passenger compartment, which is disposed near the ceiling of the passenger compartment and the inside air inlet 21 The inside air gas sensor 65 for detecting (smoking) and smell, and the outside air inside the outside air inlet 22 of the inside / outside air switching box A or in the front grill of the vehicle and introduced from the outside air inlet 22 (outside air) ) Multiple odors, such as ammonia and hydrogen sulfide, forest scents such as α-pinene, β-pinene, sabinene, and harmful gas components (HC, A combination of a plurality of gas sensors for detecting CO, NOx, etc.) or an integrated multi-gas sensor 66.

マルチガスセンサ６６は、信号処理回路を内蔵し、外気を導入・接触する検出体の温度を振らせ、各温度帯域での検出体の導電率変化特性をフーリエ変換することで、検出対象となる外気中の各ガス成分に対応したガス濃度情報を電気信号として取り出す構造であり、複数の匂い成分やガス成分を定量的に（例えば絶対値として）検知可能なセンサである。   The multi-gas sensor 66 has a built-in signal processing circuit, swings the temperature of the detection body that introduces / contacts the outside air, and performs Fourier transform on the conductivity change characteristics of the detection body in each temperature band, thereby detecting the outside air to be detected. The gas concentration information corresponding to each gas component therein is extracted as an electrical signal, and is a sensor that can detect a plurality of odor components and gas components quantitatively (for example, as absolute values).

これら各種センサ６１〜６６からのセンサ信号は、図示していない入出力回路で波形処理され、アナログ信号はデジタル信号に適宜ＡＤ変換される。また、車室内の熱負荷を求めるために内気温センサ６１や日射センサ６３を用いず、車室内の熱負荷を直接的に検出する赤外線センサを用いてもよい。   Sensor signals from these various sensors 61 to 66 are subjected to waveform processing by an input / output circuit (not shown), and analog signals are appropriately AD converted into digital signals. Moreover, in order to obtain | require the thermal load in a vehicle interior, you may use the infrared sensor which detects directly the thermal load in a vehicle interior, without using the internal temperature sensor 61 and the solar radiation sensor 63. FIG.

なお、破線で示すセンサ６７は、後述する第３実施形態で追加される湿度センサ６７であり、車室外空気の湿度を検出する構成である。   In addition, the sensor 67 shown with a broken line is the humidity sensor 67 added in 3rd Embodiment mentioned later, and is the structure which detects the humidity of the vehicle exterior air.

次に、エアコン制御装置２００による空調装置１００の作動を説明する。図２は、制御装置２００において実行される、エアコン制御処理のメインルーチンのフローチャートである。   Next, the operation of the air conditioner 100 by the air conditioner control apparatus 200 will be described. FIG. 2 is a flowchart of a main routine of the air conditioner control process executed in the control device 200.

図示していないイグニッションスイッチがＯＮされてこのルーチンが起動されると、まずデータ処理用メモリ（ＲＡＭ）の記憶内容等の初期化を行い（ステップ２１０）、続いて、操作パネル５０や各種センサ６１〜６６からの信号が入力処理される（ステップ２２０）。このステップ２２０では、マルチガスセンサ６６から出力される各検知信号を、予め設定した検知ガス成分もしくは匂い成分毎に読み込み、記憶装置２０１に対して検知ガス成分もしくは匂い成分毎に、時系列関係が分かるようにして、その都度検知信号データ（信号レベル等の大きさと検知時刻データ等）を記憶する。それによって、乗員が内外気切替操作した時点から所定時間Ｔ以前の各検知信号のデータを読み出せるようにする。   When an ignition switch (not shown) is turned on and this routine is started, the contents of the data processing memory (RAM) are first initialized (step 210), and then the operation panel 50 and various sensors 61 are initialized. The signals from .about.66 are input (step 220). In this step 220, each detection signal output from the multi-gas sensor 66 is read for each preset detection gas component or odor component, and the time series relationship is known for each detection gas component or odor component in the storage device 201. In this way, the detection signal data (the magnitude of the signal level and the detection time data, etc.) is stored each time. Thereby, the data of each detection signal before the predetermined time T from the time when the occupant switches the inside / outside air can be read.

この所定時間Ｔとは、外気吸入口２２外側近傍に設けたマルチガスセンサ６６が該当する外気の匂いやガス成分を検知してから、その外気が空調ダクト２０や吹出口切替箱Ｂを経由して車室内に導入されるまでの外気移動時間であり、空調装置の配置や構造によっても異なるが乗用車では1秒程度の時間である。本例ではこの所定時間Ｔより少し長い時間、例えば現時点より過去３秒間の検知信号データを記憶するようにしてある。なお、マルチガスセンサ６６は、１個の検知対象について例えば１秒間に１〜２回程度の頻度で検知信号を発生する構成である。   The predetermined time T means that the multi-gas sensor 66 provided near the outside of the outside air inlet 22 detects the odor and gas component of the outside air, and then the outside air passes through the air conditioning duct 20 and the outlet switching box B. This is the outside air travel time until it is introduced into the passenger compartment, and it takes about 1 second for passenger cars, although it depends on the arrangement and structure of the air conditioner. In this example, detection signal data for a time slightly longer than the predetermined time T, for example, the past 3 seconds from the present time, is stored. The multi-gas sensor 66 is configured to generate a detection signal for one detection target at a frequency of about 1 to 2 times per second, for example.

各種信号に基いて車室の熱負荷（車室内外を移動する熱量の総和）に応じた必要吹出温度ＴＡＯを次式により算出する（ステップ２３０）。   Based on the various signals, the required blowing temperature TAO corresponding to the heat load of the passenger compartment (the total amount of heat moving outside the passenger compartment) is calculated by the following equation (step 230).

（数１）
ＴＡＯ＝ＫＳＥＴ・ＴＳＥＴ−ＫＲ・ＴＲ−ＫＡＭ・ＴＡＭ−ＫＳ・ＴＳ＋Ｃ０
但し、ＴＳＥＴは設定温度、ＴＲは内気温センサ６１で求めた内気温、ＴＡＭは外気温センサ６２で求めた外気温、ＴＳは日射センサ６３で求めた日射量を表し、ＫＳＥＴ、ＫＲ、ＫＡＭ、ＫＳはゲインもしくは補正係数、Ｃ０は定数を表す。 (Equation 1)
TAO = KSET / TSET-KR / TR-KAM / TAM-KS / TS + C0
However, TSET represents the set temperature, TR represents the internal air temperature obtained by the internal air temperature sensor 61, TAM represents the external air temperature obtained by the external air temperature sensor 62, TS represents the solar radiation amount obtained by the solar radiation sensor 63, and KSET, KR, KAM, KS represents a gain or correction coefficient, and C0 represents a constant.

次に、算出した必要吹出温度ＴＡＯより予め定めた制御特性に従ってブロワ制御電圧ＶＡを決定する（ステップ２４０）。内気循環および外気導入を切り替える内外気切替処理（吸込モード決定）では、手動操作による内外気指示信号がない場合は必要吹出温度ＴＡＯに基いて決定し（ステップ２５０）、車室内への外気導入と内気循環とを切り替える内外気切替処理を行う。   Next, the blower control voltage VA is determined from the calculated required blowing temperature TAO according to a predetermined control characteristic (step 240). In the inside / outside air switching process (suction mode determination) for switching between the inside air circulation and the outside air introduction, when there is no inside / outside air instruction signal by manual operation, the decision is made based on the required blowout temperature TAO (step 250), and the introduction of outside air into the vehicle interior Inside / outside air switching processing for switching between inside air circulation is performed.

ここで、ステップ２５０に示す内外気切替処理について、図３を用いて説明する。   Here, the inside / outside air switching process shown in step 250 will be described with reference to FIG.

まず、乗員の手動操作による内外気指示信号、およびマルチガスセンサ６６からの最新の各検知信号を取り込む（ステップ２５１）。続いて、ステップ２５２において、もし内気循環を指示する内外気指示信号があればステップ２５５に進み、優先的に内気循環モードに切り替える。また外気導入を指示する内外気指示信号があればステップ２５６に進み、優先的に外気導入モードに切り替える。他方、内外気指示信号が出ていないときはステップ２５３に進む。   First, the inside / outside air instruction signal by the manual operation of the occupant and the latest detection signals from the multi-gas sensor 66 are captured (step 251). Subsequently, at step 252, if there is an inside / outside air instruction signal for instructing the inside air circulation, the routine proceeds to step 255, where it is preferentially switched to the inside air circulation mode. If there is an inside / outside air instruction signal for instructing the introduction of outside air, the process proceeds to step 256 to preferentially switch to the outside air introduction mode. On the other hand, when the inside / outside air instruction signal is not output, the routine proceeds to step 253.

このステップ２５３は、通常行われている内外気の自動切替制御に相当し、ステップ２３０で求めた必要吹出温度ＴＡＯが設定値より低いとき、例えばクールダウン時などの冷房負荷の大きいときにはステップ２５５に進み、内気循環モードに切り替える。他方、必要吹出温度ＴＡＯが設定値より高いときには、一義的に外気導入モードとせずに、ステップ２５４において、マルチガスセンサ６６の各検知信号が１つでも閾値を超えていれば、車室外空気中に強い匂いや有害ガスありと判断してステップ２５５に進み、内気循環モードとする。各検知信号のいずれも各閾値を超えていなければステップ２５６に進み、外気導入モードに切り替えるようにしている。   This step 253 corresponds to the automatic switching control of the inside / outside air that is normally performed, and when the required blowing temperature TAO obtained in step 230 is lower than the set value, for example, when the cooling load is large such as at the time of cool-down, the process goes to step 255. Proceed and switch to inside air circulation mode. On the other hand, when the required blowing temperature TAO is higher than the set value, the outside air introduction mode is not uniquely set, and if at least one of the detection signals of the multi-gas sensor 66 exceeds the threshold value in step 254, the air enters the vehicle exterior air. If it is determined that there is a strong odor or harmful gas, the process proceeds to step 255 to set the inside air circulation mode. If none of the detection signals exceeds the threshold values, the process proceeds to step 256 to switch to the outside air introduction mode.

このように、図３に示す内外気切替処理によれば、外気導入モードにあっても、車室外空気中に含まれる複数の匂い（臭気、香気）および有害ガス成分が、乗員に対して１つでも許容範囲外の（例えば許容状態を超える）状態にあるときには速やかに内気循環モードに切り替え、快適な車室内環境を維持可能にしている。   As described above, according to the inside / outside air switching process shown in FIG. 3, even in the outside air introduction mode, a plurality of odors (odor, aroma) and harmful gas components contained in the outside air of the passenger compartment are 1 to the occupant. When it is in a state outside the allowable range (for example, exceeding the allowable state), it is promptly switched to the inside air circulation mode to maintain a comfortable vehicle interior environment.

次に、図２に戻り、ステップ２６０では、必要吹出温度ＴＡＯに基いて各吹出口モードが決定され、各吹出口モードに応じて定まる各吹出口１２〜１５からの風量割合は、予め設定した値に固定されるのが基本である。その際、インパネ上面吹出口１５はフェイス吹出口１２の補完的役割を有し、車室内温度が所望の設定温度に略到達する略空調安定状態に至った場合は、フェイス吹出口１２からの空調空気が乗員に直接当たることによるドラフト感を解消するために、フェイス吹出口１２よりもインパネ上面吹出口１５からの空調空気の吹出量を増やし、間接的送風を行うようにしている。   Next, returning to FIG. 2, in step 260, each air outlet mode is determined based on the required air outlet temperature TAO, and the air volume ratio from each air outlet 12 to 15 determined according to each air outlet mode is set in advance. Basically it is fixed to the value. At that time, the instrument panel upper surface outlet 15 has a complementary role to the face outlet 12, and when the vehicle interior temperature reaches a substantially stable air conditioning state that substantially reaches the desired set temperature, the air conditioning from the face outlet 12 is performed. In order to eliminate the draft feeling caused by the direct impact of the air on the occupant, the amount of conditioned air blown from the instrument panel upper surface outlet 15 is increased rather than the face outlet 12 to perform indirect ventilation.

続いて、算出した必要吹出温度ＴＡＯより予め定めた制御特性に従ってエアミックスドア２６の開度を決定し（ステップ２７０）、ステップ２８０では、マルチガスセンサ６６の各検知信号の大きさが許容範囲内にあるか否かを評価する各閾値が、適正となるように更新処理する。各ステップ２３０〜２８０の処理結果に応じて各機器を制御し、所望の空調状態に制御することになる（ステップ２９０）。   Subsequently, the opening degree of the air mix door 26 is determined from the calculated required blowing temperature TAO according to a predetermined control characteristic (step 270), and in step 280, the magnitude of each detection signal of the multi-gas sensor 66 is within an allowable range. Update processing is performed so that each threshold value for evaluating whether or not there is appropriate is appropriate. Each device is controlled in accordance with the processing results of steps 230 to 280 to control to a desired air conditioning state (step 290).

ここで、ステップ２８０に示す閾値更新処理について、図４および図５を用いて説明する。図５は各検知信号に対する各閾値とその更新もしくは修正状態を示す図である。   Here, the threshold update process shown in step 280 will be described with reference to FIGS. 4 and 5. FIG. 5 is a diagram showing each threshold value for each detection signal and its updated or corrected state.

まず、閾値更新処理の要領を説明する。自動内外気切替制御している空調状態中で、乗員が手動による内外気の切替を指示したときをトリガとして、閾値更新処理を行う。これは現在の内外気状態が乗員の好みに合わないため切替指示したと判断することにし、内気切替指示があるときは、車室外空気の現行状態が乗員の好みに合わないと推測して、今後この状態の車室外空気は導入しないように閾値を更新もしくは修正（学習）する。他方、外気切替指示があるときは、車室内の換気時を除けば車室外空気の現行状態が乗員の好みに合うと推測して、今後この状態の車室外空気を導入するように閾値を更新もしくは修正（学習）する。それによって、自動内外気切替制御により、これまでより一層乗員の好みに合わせた空調状態を提供することが可能になる。   First, the outline of the threshold update process will be described. Threshold update processing is performed using a trigger when the passenger instructs manual switching of the inside / outside air in the air conditioning state in which the automatic inside / outside air switching control is performed. It is determined that the current inside / outside air condition does not match the passenger's preference, so it is determined that the switch is instructed.When there is an inside air switching instruction, it is assumed that the current state of the outside air does not match the passenger's preference, In the future, the threshold value is updated or corrected (learned) so as not to introduce outdoor air in this state. On the other hand, when there is an outside air switching instruction, it is assumed that the current state of the air outside the vehicle suits the passenger's preference, except during ventilation in the vehicle interior, and the threshold is updated to introduce air outside the vehicle in this state in the future. Or correct (learn). As a result, it is possible to provide an air conditioning state that more suits the occupant's preference than before due to the automatic inside / outside air switching control.

そこで、図４に示すフローチャートによると、乗員の手動操作による内外気指示信号、および内気ガスセンサ６５からの最新の各検知信号を取り込む（ステップ２８１）。続いて、ステップ２８２において、もし内外気指示信号が出ていなければこの閾値更新処理を終了する。   Therefore, according to the flowchart shown in FIG. 4, the inside / outside air instruction signal manually operated by the occupant and the latest detection signals from the inside air gas sensor 65 are fetched (step 281). Subsequently, in step 282, if the inside / outside air instruction signal is not output, the threshold value updating process is terminated.

他方、内気循環を指示する内外気指示信号があればステップ２８３に進み、内外気切替スイッチ５１による切替操作時点から所定時間Ｔ前のマルチガスセンサ６６の各検知信号と各閾値を、記憶装置２０１より読み出す。なお、内外気切替スイッチ５１による切替操作時点に代えて、この閾値更新処理が開始される時点を起点としても実質時間差は微小のため問題ない。読み出した各検知信号の大きさと、乗員に対する許容範囲を設定する各閾値とを比較し、各検知信号のいずれも各閾値より大きければ閾値の更新処理は必要ないと判断して終了する。   On the other hand, if there is an inside / outside air instruction signal for instructing the inside air circulation, the process proceeds to step 283, and the detection signal and each threshold value of the multi-gas sensor 66 a predetermined time T before the switching operation by the inside / outside air changeover switch 51 are stored from the storage device 201. read out. It should be noted that there is no problem because the substantial time difference is small even if the threshold update process is started instead of the switching operation time by the inside / outside air changeover switch 51. The magnitude of each of the read detection signals is compared with each threshold value for setting an allowable range for the occupant. If any of the detection signals is greater than each threshold value, it is determined that the threshold value update process is not necessary, and the process ends.

また、図５中の検知信号ｇ３，ｇ５に示すように、各検知信号の中に１つでも各閾値より小さいレベルの検知信号があれば、ステップ２８５に進む。このステップ２８５では、閾値より小さい検知信号が生じるガスセンサに対応した閾値を、この検知信号の大きさ（つまり切替操作時点から所定時間Ｔ前の検知信号の大きさ）に変更するように更新処理する。それにより、閾値を小さくして、その後該当する匂いや有害ガスを検知したときには今より低いガス濃度でもって早めに内気循環モードに切り替えることを可能にする。   Further, as shown in the detection signals g3 and g5 in FIG. 5, if at least one of the detection signals has a detection signal level lower than the threshold value, the process proceeds to step 285. In this step 285, the threshold value corresponding to the gas sensor that generates a detection signal smaller than the threshold value is updated so as to be changed to the magnitude of this detection signal (that is, the magnitude of the detection signal a predetermined time T before the switching operation time). . Thereby, the threshold value is reduced, and when the corresponding odor or harmful gas is detected thereafter, it is possible to switch to the inside air circulation mode earlier with a lower gas concentration.

他方、外気導入を指示する内外気指示信号があればステップ２８６に進み、内気ガスセンサ６５の検知信号があるか否かを確認する。もし、煙草等による煙（喫煙）や臭気を検知したときには、乗員が車室内の換気を要求して外気導入したと推測され、閾値の更新処理は必要ないと判断して終了する。   On the other hand, if there is an inside / outside air instruction signal for instructing the introduction of outside air, the process proceeds to step 286 to check whether or not there is a detection signal from the inside air gas sensor 65. If smoke (smoking) or odor due to cigarettes or the like is detected, it is presumed that the occupant has requested outside ventilation to introduce the outside air, and the threshold value updating process is judged to be unnecessary and the process is terminated.

内気ガスセンサ６５の検知信号がない、もしくは設定値以下のときには、ステップ２８７に進み、切替操作時点から所定時間Ｔ前のマルチガスセンサ６６の各検知信号と各閾値を、記憶装置２０１より読み出す。読み出した各検知信号の大きさと、乗員に対する許容範囲を設定する各閾値とを比較し、各検知信号のいずれも各閾値より小さければ閾値の更新処理は必要ないと判断して終了する。   When the detection signal of the inside air gas sensor 65 is not present or less than or equal to the set value, the process proceeds to step 287, and the detection signals and threshold values of the multi-gas sensor 66 before the predetermined time T from the switching operation time are read from the storage device 201. The magnitude of each read-out detection signal is compared with each threshold value for setting an allowable range for the occupant. If any of the detection signals is smaller than each threshold value, it is determined that the threshold value update process is not necessary, and the process ends.

また、図５中の検知信号ｇ１０，ｇ１３に示すように、各検知信号の中に１つでも各閾値より大きい検知信号があれば、ステップ２８９に進む。このステップ２８９では、閾値より大きい検知信号が生じるガスセンサに対応した閾値を、この検知信号の大きさ（つまり切替操作時点から所定時間Ｔ前の検知信号の大きさ）に変更するように更新処理する。それにより、閾値を大きくして、今後この大きさに該当する匂いを検知したときには今より高いガス濃度にならないと内気循環モードに切り替えないようにすることを可能にする。   Further, as shown in the detection signals g10 and g13 in FIG. 5, if at least one of the detection signals is larger than the threshold value, the process proceeds to step 289. In this step 289, the threshold value corresponding to the gas sensor that generates a detection signal larger than the threshold value is updated so as to be changed to the magnitude of this detection signal (that is, the magnitude of the detection signal a predetermined time T before the switching operation time). . Thereby, the threshold value is increased, and when an odor corresponding to this size is detected in the future, it is possible not to switch to the inside air circulation mode unless the gas concentration becomes higher than the present time.

これは、車室外空気に含まれる匂いの中で、森の香りであるα―ピネン、β―ピネン、サビネンなどの香気を感じて乗員が外気切替指示をしたときには、該当する匂いの閾値を大きくする。それにより、閾値更新後は、このような匂いの検知信号のレベルが今回程度に大きくても、内気循環モードへの切替を行わないようにし、外気導入を継続して車室内の空調状態をできる限り乗員の好みに合わせることが可能になる。   This is because the odor threshold of the corresponding odor is increased when the occupant instructs to switch to the outside air while feeling the scent of the forest scent, such as α-pinene, β-pinene, and sabinene. To do. Thereby, after the threshold is updated, even if the level of the detection signal of such an odor is as high as this time, the switching to the inside air circulation mode is not performed, and the introduction of the outside air can be continued and the air conditioning state of the vehicle interior can be performed. As long as it is possible to suit the passenger's preference.

（第２実施形態）
上記第１実施形態では、手動操作により外気導入を指示する内外気指示信号があるとき、マルチガスセンサ６６で検知する全ての匂いや有害ガスについて各閾値を更新もしくは修正対象としていたが、乗員が外気導入モードを選択する条件は限られているため、香気に関係する匂い成分について閾値を更新処理するだけでよい。そこで、第２実施形態では、いずれの乗員にも共通して問題とされる臭気や有害ガスについては各閾値の更新処理を行わず、乗員の好みにバラツキが大きくなる匂いの中の香気対象についてのみ閾値の更新処理を行うようにした実施形態である。 (Second Embodiment)
In the first embodiment, when there is an inside / outside air instruction signal for instructing the introduction of outside air by manual operation, each threshold value is updated or corrected for all odors and harmful gases detected by the multi-gas sensor 66. Since the conditions for selecting the introduction mode are limited, it is only necessary to update the threshold value for the odor component related to the fragrance. Therefore, in the second embodiment, the odor and harmful gas, which are common problems for all occupants, are not subjected to the updating process of each threshold value, and the odor target in the odor that greatly varies according to the occupant's preference. In this embodiment, only the threshold value updating process is performed.

第２実施形態となる閾値更新処理２８０について、図６および図７を用いて説明する。図７は各検知信号に対する各閾値とその更新（修正）状態を示す図である。   The threshold update process 280 according to the second embodiment will be described with reference to FIGS. FIG. 7 is a diagram showing each threshold value for each detection signal and its update (correction) state.

図７に示す閾値更新処理の主な作動は図４のそれと同じであり、ステップ２８７Ａ，２８８Ａ，２８９Ａが少し異なる。そこで第１実施形態と異なる点を中心に説明する。   The main operation of the threshold update process shown in FIG. 7 is the same as that of FIG. 4, and steps 287A, 288A, and 289A are slightly different. Therefore, the difference from the first embodiment will be mainly described.

ステップ２８２において、手動による外気導入を指示する内外気指示信号があればステップ２８６に進み、内気ガスセンサ６５の検知信号があるか否かを確認する。もし、煙草等による煙（喫煙）や臭気を検知したときには、乗員が車室内の換気を要求して外気導入したと推測され、閾値の更新処理は必要ないと判断して終了する。   In step 282, if there is an inside / outside air instruction signal instructing manual introduction of outside air, the process proceeds to step 286, and it is confirmed whether or not there is a detection signal of the inside air gas sensor 65. If smoke (smoking) or odor due to cigarettes or the like is detected, it is presumed that the occupant has requested outside ventilation to introduce the outside air, and the threshold value updating process is judged to be unnecessary and the process is terminated.

内気ガスセンサ６５の検知信号がない、もしくは設定値以下の許容範囲内にあるときには、ステップ２８７Ａに進む。このステップ２８７Ａでは、切替操作時点から所定時間Ｔ前のマルチガスセンサ６６の各検知信号の中で、香気を検知するガスセンサの各検知信号とそれに対応する各閾値を、記憶装置２０１より読み出す。読み出した各検知信号の大きさと、乗員に対する許容範囲を設定する各閾値とを比較し、各検知信号のいずれも各閾値より小さければ閾値の更新処理は必要ないと判断して終了する。   When there is no detection signal of the inside air gas sensor 65 or when it is within the allowable range below the set value, the process proceeds to step 287A. In this step 287A, the detection signals of the gas sensor for detecting aroma and the corresponding threshold values are read from the storage device 201 among the detection signals of the multi-gas sensor 66 a predetermined time T before the switching operation time point. The magnitude of each read-out detection signal is compared with each threshold value for setting an allowable range for the occupant. If any of the detection signals is smaller than each threshold value, it is determined that the threshold value update process is not necessary, and the process ends.

また、図７中の検知信号ｇ９，ｇ１２に示すように、各検知信号の中に１つでも各閾値より大きい検知信号があれば、ステップ２８９Ａに進む。このステップ２８９Ａでは、閾値より大きい検知信号が生じるガスセンサに対応した閾値を、この検知信号の大きさ（つまり切替操作時点から所定時間Ｔ前の検知信号の大きさ）に変更するように更新処理する。それにより、閾値を大きくすることで、今後この大きさに該当する匂い（香気）を検知したときには今より高いガス濃度にならないと内気循環モードに切り替えないようにして、車室外空気中に含まれる香気ができる限り車室内に導入され易くし、乗員の好みに合わせることが可能になる。   Further, as shown in the detection signals g9 and g12 in FIG. 7, if at least one of the detection signals is larger than the threshold value, the process proceeds to step 289A. In this step 289A, the threshold value corresponding to the gas sensor that generates a detection signal larger than the threshold value is updated so as to be changed to the magnitude of this detection signal (that is, the magnitude of the detection signal a predetermined time T before the switching operation time). . As a result, by increasing the threshold value, when an odor (aroma) corresponding to this size is detected in the future, it will not be switched to the inside air circulation mode unless the gas concentration becomes higher than the present level, and it will be included in the outside air in the passenger compartment. As much as possible, the aroma can be introduced into the passenger compartment, and can be adapted to the passenger's preference.

（第３実施形態）
上記第１実施形態では、乗員が手動操作して外気導入モードにあるとき、マルチガスセンサ６６からの各検知信号を評価する閾値の更新処理を行うための前提条件として、車室内の換気時、つまり内気ガスセンサ６５が煙草等による煙（喫煙）や臭気を検知したときを除いていた（ステップ２８６）。しかし、換気時以外にも、雨天など高湿度下では窓ガラスが曇りやすく、窓ガラスの曇り防止のために乗員が手動で外気導入モードを選択する可能性もある。 (Third embodiment)
In the first embodiment, when the occupant is manually operated and is in the outside air introduction mode, the precondition for performing the threshold value updating process for evaluating each detection signal from the multi-gas sensor 66 is as follows: Except when the inside air gas sensor 65 detects smoke (smoking) or odor due to tobacco or the like (step 286). However, other than during ventilation, the window glass tends to fog up under high humidity such as rainy weather, and there is a possibility that the occupant manually selects the outside air introduction mode to prevent the window glass from fogging.

そこで、第３実施形態では、閾値の更新処理を行うための前提条件をさらに制限し、換気時や窓曇り防止時を除く、限られた条件のときに閾値の更新もしくは修正処理を行い、より一層乗員の好みに合わせることを可能にしている。   Therefore, in the third embodiment, the preconditions for performing the threshold update process are further limited, and the threshold is updated or corrected when the conditions are limited except for ventilation and window fogging prevention. It makes it possible to further suit the passenger's preference.

第３実施形態となる閾値更新処理２８０について、図８を用いて説明する。図８に示す閾値更新処理の主な作動は図４のそれと同じであり、ステップ２８１Ａと、ステップ２８００が追加された点が異なる。   A threshold update process 280 according to the third embodiment will be described with reference to FIG. The main operation of the threshold update process shown in FIG. 8 is the same as that of FIG. 4 except that step 281A and step 2800 are added.

図１中に破線で示す湿度センサ６７は、車室外空気の湿度を検出する構成であり、通常内外気切替箱Ａの外気吸入口２２の外側近傍に配置される。ステップ２８１Ａでは、内気ガスセンサ６５の検知信号、手動による内外気指示信号の他に、湿度センサ６７からの湿度信号を取り込む。ステップ２８２において、手動による外気導入を指示する内外気指示信号があればステップ２８６に進み、内気ガスセンサ６５の検知信号があるか否かを確認する。もし、煙草等による煙（喫煙）や臭気を検知したときには、乗員が車室内の換気を要求して外気導入したと推測され、閾値の更新処理は必要ないと判断して終了する。   The humidity sensor 67 indicated by a broken line in FIG. 1 is configured to detect the humidity of the air outside the passenger compartment, and is normally disposed in the vicinity of the outside of the outside air inlet 22 of the inside / outside air switching box A. In step 281A, the humidity signal from the humidity sensor 67 is taken in addition to the detection signal of the inside air gas sensor 65 and the manual inside / outside air instruction signal. In step 282, if there is an inside / outside air instruction signal instructing manual introduction of outside air, the process proceeds to step 286, and it is confirmed whether or not there is a detection signal of the inside air gas sensor 65. If smoke (smoking) or odor due to cigarettes or the like is detected, it is presumed that the occupant has requested outside ventilation to introduce the outside air, and the threshold value updating process is judged to be unnecessary and the process is terminated.

内気ガスセンサ６５の検知信号がない、もしくは設定値以下で乗員にとって許容範囲内にあるときには、ステップ２８００に進む。このステップ２８００では、車室外空気の湿度が所定値より高いか低いかを確認する。もし、湿度が高いときには窓ガラスの曇り防止のために外気導入したと推測され、閾値の更新処理は必要ないと判断して終了する。他方、湿度が高くなければステップ２８７〜２８９に進み、閾値の更新処理を行う。   When there is no detection signal of the inside air gas sensor 65 or when it is below the set value and within the allowable range for the occupant, the routine proceeds to step 2800. In step 2800, it is confirmed whether the humidity of the air outside the passenger compartment is higher or lower than a predetermined value. If the humidity is high, it is presumed that outside air has been introduced to prevent the window glass from being fogged. On the other hand, if the humidity is not high, the process proceeds to steps 287 to 289 to perform threshold value update processing.

それにより、乗員が外気導入モードを手動選択した中で、室内の臭気や喫煙時の換気および窓曇り防止の場合を除くことにより、乗員が快適性向上のために外気導入モードを選択する機会をより確実に捉えて閾値を更新することが可能となり、より一層乗員の好みに合わせ、車室内環境を快適にすることが可能となる。   As a result, while the occupant has manually selected the outside air introduction mode, the occupant has the opportunity to select the outside air introduction mode to improve comfort by excluding indoor odors, smoking ventilation and window fog prevention. It is possible to update the threshold value with more certainty, and it is possible to further improve the passenger compartment environment according to the passenger's preference.

なお、上記の各実施形態の各ステップ２８５、２８９では、マルチガスセンサ６６で検知した検知信号の大きさに現行の閾値を更新処理していたが、比較的臭気性の低い匂いや有害性の低いガス成分等の回避の緊急性が低い場合には、内外気切替スイッチ５１の選択頻度に応じて閾値を所定量ずつ段階的に修正もしくは学習するようにし、閾値の変動を少なくして車室内の空調環境を徐々に変化させるようにしてもよい。   In each of the steps 285 and 289 in each of the above embodiments, the current threshold value is updated to the magnitude of the detection signal detected by the multi-gas sensor 66. However, the odor and the harmfulness are relatively low. When the urgency of avoiding a gas component or the like is low, the threshold value is corrected or learned step by step in accordance with the selection frequency of the inside / outside air changeover switch 51, and the variation in the threshold value is reduced. The air conditioning environment may be gradually changed.

また、上記の各実施形態では、乗員の内外気の好みを、既存の内外気切替スイッチ５１による切替情報をトリガとして判断していたが、既存スイッチでなくとも、内外気選択に関する乗員の意志がエアコン制御装置２００に伝達できる手段であればいずれの手段でもよい。   Further, in each of the above-described embodiments, the preference of the passenger's inside / outside air is determined by using the switching information by the existing inside / outside air changeover switch 51 as a trigger. Any means that can transmit to the air conditioner control device 200 may be used.

また、上記の各実施形態の各ステップ２８３、２８７では、記憶装置２０１より、乗員が匂いを感知して切り替える切替操作時点からＴ秒前のマルチガスセンサ６６の検知信号を読み出しているが、図２に示すエアコン制御ルーチンは高速処理されているため、切替操作時点でなくともそれに応じて処理する時点、例えば閾値更新処理２８０を開始する時点から所定時間Ｔ前の各検知信号のデータを読み出すようにしてもよい。   In steps 283 and 287 of the above embodiments, the detection signal of the multi-gas sensor 66 T seconds before the switching operation time when the occupant senses the odor and switches is read from the storage device 201. FIG. Since the air conditioner control routine shown in FIG. 6 is processed at high speed, the detection signal data before a predetermined time T from the time of processing corresponding to the switching operation time, for example, the time of starting the threshold update processing 280, is read. May be.

本発明の第１実施形態である移動体用空調装置の全体構成を示す模式図である。It is a schematic diagram which shows the whole structure of the air conditioner for moving bodies which is 1st Embodiment of this invention. エアコン制御装置２００のメインルーチンを示すフローチャートである。It is a flowchart which shows the main routine of the air-conditioner control apparatus 200. エアコン制御装置２００の内外気切替処理を示すフローチャートである。It is a flowchart which shows the inside / outside air switching process of the air-conditioner control apparatus 200. エアコン制御装置２００の閾値更新処理を示すフローチャートである。It is a flowchart which shows the threshold value update process of the air-conditioner control apparatus 200. 図４に示す各検知信号の閾値更新処理を補足する説明図である。It is explanatory drawing supplementing the threshold value update process of each detection signal shown in FIG. 本発明の第２実施形態であるエアコン制御装置２００の閾値更新処理を示すフローチャートである。It is a flowchart which shows the threshold value update process of the air-conditioner control apparatus 200 which is 2nd Embodiment of this invention. 図６に示す各検知信号の閾値更新処理を補足する説明図である。It is explanatory drawing supplementing the threshold value update process of each detection signal shown in FIG. 本発明の第３実施形態であるエアコン制御装置２００の閾値更新処理を示すフローチャートである。It is a flowchart which shows the threshold value update process of the air-conditioner control apparatus 200 which is 3rd Embodiment of this invention.

符号の説明Explanation of symbols

A 内外気切替箱（内外気切替手段）
B 吹出口切替箱
２０ 空調ダクト
２１ 内気吸入口
２２ 外気吸入口
５０ 操作パネル
５１ 内外気切替スイッチ
６５ 内気ガスセンサ
６６ マルチガスセンサ
６７ 湿度センサ
１００ エアコンユニット
２００ エアコン制御装置（制御手段）
２０１ 記憶装置 A Inside / outside air switching box (inside / outside air switching means)
B Air outlet switching box 20 Air conditioning duct 21 Inside air inlet 22 Outside air inlet 50 Operation panel 51 Inside / outside air switching switch 65 Inside air sensor 66 Multi gas sensor 67 Humidity sensor 100 Air conditioner unit 200 Air conditioner controller (control means)
201 storage device

Claims (10)

外気中に含まれる匂いおよび／またはガス成分を検知するガスセンサと、
移動体の室内への外気導入と内気循環とを切り替える内外気切替手段と、
この内外気切替手段による内外気切替を手動で指示する内外気切替スイッチと、
前記ガスセンサの検知信号と、この検知信号を評価する閾値とに基いて、前記内外気切替手段による内外気切替を制御する制御手段とを備え、
前記制御手段は、前記ガスセンサの前記検知信号を、検知した時系列関係が分かる形で記憶する記憶装置を有し、前記内外気切替スイッチより内外気指示信号を受けたとき、前記ガスセンサが検知してから前記移動体の室内に入るまでの外気移動時間だけ以前の前記検知信号を前記記憶装置より読み出し、この読み出した検知信号の大きさに応じて前記閾値を修正することを特徴とする移動体用空調装置。 A gas sensor that detects odors and / or gas components contained in the outside air;
Inside / outside air switching means for switching between introduction of outside air into the room of the moving body and inside air circulation;
An inside / outside air switch for manually instructing inside / outside air switching by the inside / outside air switching means;
Based on a detection signal of the gas sensor and a threshold value for evaluating the detection signal, a control means for controlling the inside / outside air switching by the inside / outside air switching means,
The control means has a storage device that stores the detection signal of the gas sensor in a form that allows the detected time series relationship to be understood , and the gas sensor detects when the inside / outside air instruction signal is received from the inside / outside air changeover switch. The moving body is characterized in that the detection signal is read from the storage device that is only the outside air movement time from when the moving body enters the room until the threshold value is corrected according to the magnitude of the read detection signal. Air conditioner. 外気中に含まれる複数の匂いおよび／またはガス成分を検知する複数のガスセンサと、
移動体の室内への外気導入と内気循環とを切り替える内外気切替手段と、
この内外気切替手段による内外気切替を手動で指示する内外気切替スイッチと、
前記複数のガスセンサの各検知信号の大きさと、乗員の許容状態を設定する各閾値とを比較し、その比較結果に応じて前記内外気切替手段による内外気切替を制御する制御手段とを備え、
前記制御手段は、前記ガスセンサの前記検知信号を、検知した時系列関係が分かる形で記憶する記憶装置を有し、前記内外気切替スイッチより内外気指示信号を受けたとき、前記ガスセンサが検知してから前記移動体の室内に入るまでの外気移動時間だけ以前の前記検知信号を前記記憶装置より読み出し、この読み出した検知信号の大きさに応じて前記閾値を修正することを特徴とする移動体用空調装置。 A plurality of gas sensors for detecting a plurality of odors and / or gas components contained in the outside air;
Inside / outside air switching means for switching between introduction of outside air into the room of the moving body and inside air circulation;
An inside / outside air switch for manually instructing inside / outside air switching by the inside / outside air switching means;
Comparing the magnitude of each detection signal of the plurality of gas sensors with each threshold value for setting the occupant's permissible state, and comprising control means for controlling the inside / outside air switching by the inside / outside air switching means according to the comparison result,
The control means has a storage device that stores the detection signal of the gas sensor in a form that allows the detected time series relationship to be understood , and the gas sensor detects when the inside / outside air instruction signal is received from the inside / outside air changeover switch. The moving body is characterized in that the detection signal is read from the storage device that is only the outside air movement time from when the moving body enters the room until the threshold value is corrected according to the magnitude of the read detection signal. Air conditioner. 前記制御手段は、前記内外気指示信号を受けたとき、前記外気移動時間だけ以前の前記検知信号を前記記憶装置より読み出し、この読み出した検知信号の大きさに前記閾値を更新することを特徴する請求項１または請求項２に記載の移動体用空調装置。 When the control means receives the inside / outside air instruction signal, the control means reads out the detection signal that is previous by the outside air movement time from the storage device, and updates the threshold value to the magnitude of the read detection signal. The air conditioner for moving bodies according to claim 1 or 2 . 前記制御手段は、内気循環を示す前記内外気指示信号を受けたとき、前記外気移動時間だけ以前の前記検知信号を前記記憶装置より読み出し、この読み出した検知信号の中で臭気もしくは有害ガス成分を示す前記検知信号について、その大きさに前記閾値を更新することを特徴とする請求項１ないし請求項３のいずれか１項に記載の移動体用空調装置。 When the control means receives the inside / outside air instruction signal indicating inside air circulation, the control means reads out the detection signal that is only before the outside air moving time from the storage device, and the odor or harmful gas component in the read detection signal. The moving body air conditioner according to any one of claims 1 to 3 , wherein the threshold value is updated to a magnitude of the detection signal to be displayed. 前記制御手段は、外気導入を示す前記内外気指示信号を受けたとき、前記外気移動時間だけ以前の前記検知信号を前記記憶装置より読み出し、この読み出した検知信号の中で香気を示す前記検知信号について、その大きさに前記閾値を更新することを特徴とする請求項１ないし請求項３のいずれか１項に記載の移動体用空調装置。 When the control means receives the inside / outside air instruction signal indicating the introduction of outside air, the control means reads the detection signal that is previous by the outside air movement time from the storage device, and the detection signal that indicates aroma in the read detection signal The air conditioner for a moving body according to any one of claims 1 to 3 , wherein the threshold value is updated to a size of the air conditioner. 前記移動体の室内空気（内気）中に含まれる臭気もしくは喫煙を検知する内気ガスセンサを設け、
前記制御手段は、外気導入を示す前記内外気指示信号を受けると共に、前記内気ガスセンサで検知した検知信号に基いて臭気もしくは喫煙が許容範囲内にあるとき、前記記憶装置に記憶された前記外気移動時間だけ以前の前記検知信号の大きさに、前記閾値を更新することを特徴とする請求項１ないし請求項３のいずれか１項に記載の移動体用空調装置。 An indoor air gas sensor for detecting odor or smoking contained in the indoor air (inside air) of the mobile body is provided,
The control means receives the inside / outside air instruction signal indicating outside air introduction, and the outside air movement stored in the storage device when odor or smoking is within an allowable range based on a detection signal detected by the inside air gas sensor. The air conditioner for a moving body according to any one of claims 1 to 3 , wherein the threshold value is updated to the magnitude of the detection signal that is earlier by time. 外気中の湿度を検知する湿度センサを設け、
前記制御手段は、外気導入を示す前記内外気指示信号を受けると共に、前記湿度センサで検知した湿度信号に基いて湿度が許容範囲内にあるとき、前記記憶装置に記憶された前記外気移動時間だけ以前の前記検知信号の大きさに、前記閾値を更新することを特徴とする請求項１ないし請求項３のいずれか１項に記載の移動体用空調装置。 A humidity sensor is provided to detect the humidity in the outside air.
The control means receives the inside / outside air instruction signal indicating outside air introduction, and when the humidity is within an allowable range based on the humidity signal detected by the humidity sensor, only the outside air moving time stored in the storage device is stored. The air conditioner for a moving body according to any one of claims 1 to 3 , wherein the threshold value is updated to the magnitude of the previous detection signal. 前記移動体の室内空気中に含まれる臭気もしくは喫煙を検知する内気ガスセンサと、外気中の湿度を検知する湿度センサとを設け、
前記制御手段は、外気導入を示す前記内外気指示信号を受けたとき、前記内気ガスセンサで検知した臭気もしくは喫煙の状態、および前記湿度センサで検知した湿度の状態のいずれもが許容範囲内にあるとき、前記閾値を更新することを特徴とする請求項１ないし請求項３のいずれか１項に記載の移動体用空調装置。 An indoor air gas sensor that detects odor or smoking contained in the indoor air of the mobile body, and a humidity sensor that detects humidity in the outside air,
When the control means receives the inside / outside air instruction signal indicating outside air introduction, both the odor or smoking state detected by the inside air gas sensor and the humidity state detected by the humidity sensor are within an allowable range. The mobile unit air conditioner according to any one of claims 1 to 3 , wherein the threshold value is updated. 前記ガスセンサは、共通の検出体を用いて、外気中に含まれる複数の匂いおよび／またはガス成分を検知するマルチガスセンサで構成されることを特徴とする請求項１記載の移動体用空調装置。   The air conditioner for a moving body according to claim 1, wherein the gas sensor includes a multi-gas sensor that detects a plurality of odors and / or gas components contained in the outside air using a common detection body. 前記ガスセンサは、前記内外気切替手段の外気吸入口の外側近傍に配置され、前記外気取込口に導入される外気中に含まれる匂いおよび／またはガス成分を検知することを特徴とする請求項１または請求項２記載の移動体用空調装置。   The gas sensor is disposed near an outside of an outside air intake port of the inside / outside air switching unit, and detects an odor and / or a gas component contained in outside air introduced into the outside air intake port. The moving body air conditioner according to claim 1 or 2.
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