JP4784787B2 - Air conditioner for idling stop vehicle - Google Patents

Air conditioner for idling stop vehicle Download PDF

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JP4784787B2
JP4784787B2 JP2009101785A JP2009101785A JP4784787B2 JP 4784787 B2 JP4784787 B2 JP 4784787B2 JP 2009101785 A JP2009101785 A JP 2009101785A JP 2009101785 A JP2009101785 A JP 2009101785A JP 4784787 B2 JP4784787 B2 JP 4784787B2
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air
outside air
temperature
idling stop
adjusting means
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JP2010247777A (en
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知典 原田
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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Priority to JP2009101785A priority Critical patent/JP4784787B2/en
Priority to CN201010138578.5A priority patent/CN101863212B/en
Priority to DE201010012046 priority patent/DE102010012046A1/en
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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
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
    • B60H1/00835—Damper doors, e.g. position control
    • B60H1/00849—Damper doors, e.g. position control for selectively commanding the induction of outside or inside air
    • 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
    • B60H1/00764—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 a vehicle driving condition, e.g. speed
    • B60H1/00778—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 a vehicle driving condition, e.g. speed the input being a stationary vehicle position, e.g. parking or stopping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
    • B60H1/00828—Ventilators, e.g. speed control

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Description

本発明は、車両用空調装置に関し、特にアイドリングストップ時の快適性の向上を図った装置に関する。   The present invention relates to a vehicle air conditioner, and more particularly to an apparatus that improves comfort when idling is stopped.

従来、電動コンプレッサ等の装置を搭載しないアイドリングストップ車両において、アイドリングストップ時には、空調装置もエンジンの停止と共に運転停止状態となるように構成されている。従って、アイドリングストップの状態がある程度継続されると、夏季には冷房能力の低下により車両室内温度の上昇が発生する。また、冬季においては除湿能力の低下により窓曇りが発生する可能性があるという問題がある。   Conventionally, in an idling stop vehicle that is not equipped with a device such as an electric compressor, the air conditioner is also configured to stop operation when the engine is stopped at the time of idling stop. Therefore, if the idling stop state is continued to some extent, the vehicle interior temperature rises due to a decrease in cooling capacity in summer. In winter, there is a problem that window fogging may occur due to a decrease in dehumidifying ability.

そこで、空調装置が暖房モードで起動された状態において車両がアイドリングストップとなった時に、所定の車室内温度を下回り、エバポレータの温度が所定値を越えており、且つ、エンジン冷却水温度が所定値を下回る場合には、エンジン冷却水の温度低下に伴い内外気ダンパ（インテークドア）による内気導入量を増加させ、一方、空調装置が冷房モードで起動された状態において車両がアイドリングストップとなった時に、所定の車室内温度を越え、且つ、エバポレータの温度が所定値を下回る場合には、車室内温度の上昇に伴い内外気ダンパによる内気導入量を増加させるべく内外気ダンパの制御を行う技術が開発されている（特許文献１）。このように、エンジン停止後においても、それまで空調された空気を内外気ダンパの開度を制御しつつ循環させることで、エンジン停止に伴う空調フィーリングの低下を可能な限り抑圧し、特に冬季の窓曇りの発生を極力抑えることが可能である。   Therefore, when the vehicle is idling stopped in the state where the air conditioner is activated in the heating mode, the temperature falls below a predetermined cabin temperature, the evaporator temperature exceeds a predetermined value, and the engine coolant temperature is a predetermined value. When the temperature of the engine cooling water is lower, the amount of inside air introduced by the inside / outside air damper (intake door) is increased as the temperature of the engine cooling water decreases, while the vehicle is idling stopped while the air conditioner is activated in the cooling mode. A technology for controlling the inside / outside air damper to increase the amount of inside air introduced by the inside / outside air damper with an increase in the inside temperature of the vehicle interior when the temperature inside the evaporator exceeds a predetermined value and the temperature of the evaporator falls below a predetermined value. It has been developed (Patent Document 1). In this way, even after the engine is stopped, air that has been air-conditioned until then is circulated while controlling the opening degree of the inside / outside air damper, thereby suppressing the decrease in the air-conditioning feeling caused by the engine stop as much as possible. It is possible to minimize the occurrence of fogging of windows.

特開２００１−３１０６１８号公報JP 2001-310618 A

ところで、エンジン停止時に内気の循環量を増加させることは、新鮮な外気の車室内への導入を制限することになり、また、冬季においては、空調装置が運転停止状態になることで基本的に窓曇りの発生を避けられないことになり、好ましいことではない。
この点、上記特許文献１に開示の技術によれば、内外気ダンパの開度を制御するようにしており、ある程度は外気を車室内へ導入することも可能と考えられる。 By the way, increasing the circulation amount of the inside air when the engine is stopped restricts the introduction of fresh outside air into the passenger compartment, and in the winter, the air conditioner is basically in a stopped state. The occurrence of window fogging is unavoidable, which is not preferable.
In this regard, according to the technique disclosed in Patent Document 1, the opening degree of the inside / outside air damper is controlled, and it is considered that outside air can be introduced into the vehicle interior to some extent.

しかしながら、上記特許文献１に開示の技術では、アイドリングストップとなった場合、車室内温度及びエバポレータの温度に応じて内外気ダンパの開度を制御することにより内気導入量の制御を行っており、例えば夏季には外気温度が高いほど、冬季には外気温度が低いほど、エバポレータまたはヒータでの熱交換量が増えることになり、車室内への冷風や温風の導入時間が短くなってしまうという問題がある。これにより、車室内の快適性を維持するために空調装置を作動すべくアイドリングストップが早期に解除されてしまい、即ち外気温度によりアイドリングストップ時間が短縮してしまい、好ましいことではない。   However, in the technique disclosed in Patent Document 1, when the idling stop is performed, the amount of inside air introduced is controlled by controlling the opening degree of the inside / outside air damper according to the vehicle interior temperature and the evaporator temperature. For example, the higher the outside air temperature in summer and the lower the outside air temperature in winter, the more heat exchange will take place in the evaporator or heater, and the introduction time of cool air or warm air into the passenger compartment will be shortened. There's a problem. As a result, the idling stop is released early in order to operate the air conditioner in order to maintain the comfort in the passenger compartment, that is, the idling stop time is shortened due to the outside air temperature, which is not preferable.

本発明は、このような問題を解決するためになされたもので、その目的とするところは、アイドリングストップ時であっても外気温度に拘わらず車室内の快適性を確保してアイドリングストップの長時間化を実現可能なアイドリングストップ車両の空調装置を提供することにある。   The present invention has been made to solve such a problem. The object of the present invention is to ensure the comfort of the passenger compartment regardless of the outside air temperature even when idling is stopped, and to improve the length of the idling stop. An object of the present invention is to provide an air conditioner for an idling stop vehicle capable of realizing time.

上記の目的を達成するために、請求項１のアイドリングストップ車両の空調装置は、エンジンのアイドリングストップを行う車両に搭載され、車室外の外気と車室内の内気とを内気導入口及び外気導入口からそれぞれ導入して吹き出し口から車内に排出する空調ダクト内に前記内気導入口及び前記外気導入口との下流に位置して配設された内気と外気を切り換える内外気ダンパ及び該内外気ダンパを駆動する内外気ダンパ駆動手段からなり、内気と外気の導入割合を調整する内外気割合調整手段と、前記空調ダクト内に前記内外気割合調整手段の下流に位置して配設され、導入する空気の風量を調整する風量調整手段と、 前記空調ダクト内に前記風量調整手段の下流に位置して配設され、前記エンジンの作動に連動し、導入した空気の温度を調整する温度調整手段と、外気温度を検出する外気温度検出手段とを備えたアイドリングストップ車両の空調装置において、前記内外気割合調整手段は、車両がアイドリングストップ状態にあるとき、前記外気温度検出手段により検出された外気温度が第１の所定温度より低いと、前記内外気ダンパの開度を第１の所定開度として内気よりも外気の導入割合を多くし、外気温度が第２の所定温度以上であると、前記内外気ダンパの開度を第２の所定開度として外気よりも内気の導入割合を多くし、外気温度が前記第１の所定温度以上であり前記第２の所定温度より低いと、外気温度に応じて前記内外気ダンパの開度を前記第１の所定開度と前記第２の所定開度との間で調整し、前記風量調整手段は、車両がアイドリングストップ状態にあるとき、空気の風量が所定量以上であると、空気の風量を前記所定量とすることを特徴とする。   In order to achieve the above object, an air conditioner for an idling stop vehicle according to claim 1 is mounted on a vehicle that performs idling stop of an engine, and the outside air outside the passenger compartment and the inside air inside the passenger compartment are connected to the inside air inlet and the outside air inlet. The inside / outside air damper and the inside / outside air damper for switching between the inside air and the outside air, which are disposed downstream of the inside air introduction port and the outside air introduction port in an air conditioning duct which is respectively introduced from the air outlet and is discharged into the vehicle from the blowout port. An internal / external air ratio adjusting unit that adjusts the introduction ratio of the internal air and the external air, and an air to be introduced that is disposed in the air conditioning duct at a position downstream of the internal / external air ratio adjusting unit. An air volume adjusting means for adjusting the air volume of the air; and disposed in the air conditioning duct at a position downstream of the air volume adjusting means, in conjunction with the operation of the engine, and the temperature of the introduced air In an air conditioning apparatus for an idling stop vehicle having a temperature adjusting means for adjusting and an outside air temperature detecting means for detecting an outside air temperature, the inside / outside air ratio adjusting means is configured to detect the outside air temperature detecting means when the vehicle is in an idling stop state. When the outside air temperature detected by the above is lower than the first predetermined temperature, the opening degree of the inside / outside air damper is set to the first predetermined opening degree so that the introduction ratio of the outside air is larger than the inside air, and the outside air temperature is the second predetermined temperature. If it is above, the opening degree of the inside / outside air damper is set to a second predetermined opening degree to increase the introduction ratio of the inside air more than the outside air, and the outside air temperature is equal to or higher than the first predetermined temperature and is higher than the second predetermined temperature. If it is low, the opening degree of the inside / outside air damper is adjusted between the first predetermined opening degree and the second predetermined opening degree according to the outside air temperature, and the air volume adjusting means is configured to bring the vehicle into an idling stop state. If there When the air flow rate is equal to or greater than a predetermined amount, the air flow rate is set to the predetermined amount.

また、請求項２のアイドリングストップ車両の空調装置では、請求項１において、前記温度調整手段は、冷媒を前記エンジンにより駆動されるコンプレッサにより圧縮しながら放熱と吸熱とにより相変化させつつ循環させる冷凍回路に介装され、前記冷媒と前記空調ダクト内に導入した空気との間で熱交換を行うエバポレータを含むことを特徴とする。
また、請求項３のアイドリングストップ車両の空調装置では、請求項１または２において、前記風量調整手段は、車両がアイドリングストップ状態にあるとき、空気の風量が前記所定量より小さいと、その風量を維持することを特徴とする。 According to a second aspect of the present invention, there is provided an air conditioner for an idling stop vehicle according to the first aspect, wherein the temperature adjusting means circulates the refrigerant while changing the phase by heat dissipation and heat absorption while compressing the refrigerant by a compressor driven by the engine. An evaporator interposed in a circuit and performing heat exchange between the refrigerant and the air introduced into the air conditioning duct is included.
According to a third aspect of the present invention, there is provided an air conditioning apparatus for an idling stop vehicle according to the first or second aspect, wherein when the vehicle is in an idling stop state, the air volume adjusting means reduces the air volume when the air volume is smaller than the predetermined amount. It is characterized by maintaining.

請求項１の発明によれば、車両がアイドリングストップ状態とされたとき、外気温度検出手段により検出された外気温度が第１の所定温度より低いと、内外気ダンパの開度を第１の所定開度として内気よりも外気の導入割合を多くし、外気温度が第２の所定温度以上であると、内外気ダンパの開度を第２の所定開度として外気よりも内気の導入割合を多くし、外気温度が第１の所定温度以上であり第２の所定温度より低いと、外気温度に応じて内外気ダンパの開度を第１の所定開度と第２の所定開度との間で調整し、さらに、車両がアイドリングストップ状態にあるとき、空気の風量が所定量以上であると、空気の風量を所定量とするようにしている。   According to the first aspect of the present invention, when the vehicle is in the idling stop state, if the outside air temperature detected by the outside air temperature detecting means is lower than the first predetermined temperature, the opening degree of the inside / outside air damper is set to the first predetermined temperature. When the outside air introduction ratio is increased more than the inside air as the opening degree, and the outside air temperature is equal to or higher than the second predetermined temperature, the inside air / air damper opening degree is set to the second predetermined opening degree and the inside air introduction ratio is larger than the outside air. When the outside air temperature is equal to or higher than the first predetermined temperature and lower than the second predetermined temperature, the opening degree of the inside / outside air damper is set between the first predetermined opening degree and the second predetermined opening degree according to the outside air temperature. Further, when the vehicle is in an idling stop state, if the air flow rate is equal to or greater than a predetermined amount, the air flow rate is set to a predetermined amount.

従って、アイドリングストップ時、夏季の外気温度が高い場合には、内気割合を増加して車室内の空調された空気を温度調整手段へ導入することにより、同時に風量調整手段の風量を少なくして温度調整手段に流入する空気の量を減らすことにより、温度調整手段の温度上昇を抑えることができる。一方、冬季の外気温度が低い場合には、風量調整手段の風量を少なくして温度調整手段に流入する空気の量を減らしながら、外気温度が低いほど外気を導入して外気割合を増やし、車室内の空気を外気に近づけることができる。   Therefore, when idling is stopped and the outside air temperature is high in summer, the ratio of the inside air is increased and air conditioned in the passenger compartment is introduced into the temperature adjusting means, and at the same time the air volume of the air volume adjusting means is reduced and the temperature is reduced. By reducing the amount of air flowing into the adjusting means, the temperature rise of the temperature adjusting means can be suppressed. On the other hand, when the outside air temperature in winter is low, the air volume of the air volume adjustment means is decreased to reduce the amount of air flowing into the temperature adjustment means. Indoor air can be brought close to the outside air.

これより、夏季のアイドリングストップ時には、冷風を長時間確保して快適性を維持し、アイドリングストップ時間を安定して長くとることができ、冬季のアイドリングストップ時には、暖房性能を確保しつつ窓曇りの発生を防止し、やはりアイドリングストップ時間を安定して長くとることができる。
請求項２の発明によれば、温度調整手段は、冷凍回路に介装されて冷媒と空調ダクト内に導入した空気との間で熱交換を行うエバポレータを含むので、アイドリングストップ時、夏季の外気温度が高い場合には、内気割合を増加して車室内の空調された空気をエバポレータへ導入することにより、同時に風量調整手段の風量を少なくしてエバポレータに流入する空気の量を減らすことにより、冷媒の温度上昇を抑えることができ、冷風を長時間確保して快適性を維持することができ、アイドリングストップ時間を安定して長くとることができる。一方、冬季の外気温度が低い場合には、風量調整手段の風量を少なくしてエバポレータに流入する空気の量を減らしながら外気温度が低いほど外気を導入して車室内の空気を外気に近づけることができ、暖房性能を確保しつつ窓曇りの発生を防止でき、やはりアイドリングストップ時間を安定して長くとることができる。 As a result, when idling stops in summer, cold wind can be secured for a long time to maintain comfort, and idling stop time can be stably extended for a long time. Occurrence can be prevented, and the idling stop time can be stably increased.
According to the invention of claim 2, the temperature adjusting means includes an evaporator that is interposed in the refrigeration circuit and performs heat exchange between the refrigerant and the air introduced into the air conditioning duct. When the temperature is high, by increasing the inside air ratio and introducing air conditioned air in the passenger compartment to the evaporator, simultaneously reducing the air volume of the air volume adjusting means and reducing the amount of air flowing into the evaporator, The temperature rise of the refrigerant can be suppressed, the cold air can be secured for a long time to maintain comfort, and the idling stop time can be stably extended. On the other hand, when the outside air temperature is low in winter, the outside air is introduced closer to the outside air as the outside air temperature is lower while reducing the amount of air flowing into the evaporator by reducing the air volume of the air volume adjusting means, thereby bringing the air in the vehicle interior closer to the outside air. It is possible to prevent the occurrence of window fogging while ensuring the heating performance, and the idling stop time can be stably extended.

請求項３の発明によれば、風量調整手段は、車両がアイドリングストップ状態にあるとき、空気の風量が所定量より小さいと、その風量を維持するので、空気の風量が所定量より小さい場合には空気の風量を増加させないようにし、冷媒の温度上昇を十分に抑えることができる。   According to the invention of claim 3, when the vehicle is in an idling stop state, the air volume adjusting means maintains the air volume if the air volume is smaller than the predetermined volume. Does not increase the air volume, and can sufficiently suppress the temperature rise of the refrigerant.

本発明に係るアイドリングストップ車両の空調装置の概略構成図である。It is a schematic structure figure of an air-conditioning device of an idling stop vehicle concerning the present invention. 本発明に係るアイドリングストップ時のファン制御の概念を説明する説明図である。It is explanatory drawing explaining the concept of the fan control at the time of idling stop which concerns on this invention. 本発明に係るアイドリングストップ時の内外気ダンパ開度制御の概念を説明する説明図である。It is explanatory drawing explaining the concept of the inside / outside air damper opening degree control at the time of idling stop which concerns on this invention. 本発明に係るアイドリングストップ時の空調制御の制御ルーチンを示すフローチャートである。It is a flowchart which shows the control routine of the air-conditioning control at the time of idling stop which concerns on this invention.

以下、本発明の実施の形態を図面に基づき説明する。
図１は、車両１に搭載された本発明に係るアイドリングストップ車両の空調装置の概略構成図であり、以下、当該アイドリングストップ車両の空調装置の構成を説明する。
なお、図中白抜き矢印は、空気の流れを、二点鎖線の上側は室外、下側は室内をそれぞれ示す。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of an air conditioning apparatus for an idling stop vehicle according to the present invention mounted on a vehicle 1, and the configuration of the air conditioning apparatus for the idling stop vehicle will be described below.
In addition, the white arrow in a figure shows the flow of air, the upper side of a dashed-two dotted line shows the outdoor, and the lower side shows the room | chamber interior, respectively.

図１に示すように、アイドリングストップ車両の空調装置は、ＨＶＡＣ２１（空調ユニット）、コンプレッサ２２、コンデンサ２３、冷媒圧センサ２４、エキスパンションバルブ２５、Ａ／Ｃ−ＥＣＵ２８、空調操作部２９、外気温度センサ３１（外気温度検出部）及び室内温度センサ３２から構成される。
ＨＶＡＣ２１の上流部は、外気を導入する外気導入口２１ｉと内気を導入する内気導入口２１ｊとに分岐されている。当該分岐には、ＨＶＡＣ２１内へ導入する外気と内気の導入割合を調整するための内外気ダンパ２１ａが配設されている。 As shown in FIG. 1, an air conditioner for an idling stop vehicle includes an HVAC 21 (air conditioning unit), a compressor 22, a condenser 23, a refrigerant pressure sensor 24, an expansion valve 25, an A / C-ECU 28, an air conditioning operation unit 29, and an outside air temperature sensor. 31 (outside temperature detector) and an indoor temperature sensor 32.
The upstream portion of the HVAC 21 is branched into an outside air introduction port 21i that introduces outside air and an inside air introduction port 21j that introduces inside air. The branch is provided with an inside / outside air damper 21a for adjusting the introduction ratio of outside air and inside air to be introduced into the HVAC 21.

内外気ダンパ２１ａは、ステッピングモータ２１ｂ（内外気ダンパ駆動手段）により開度を調整可能となっている。
ＨＶＡＣ２１の内外気ダンパ２１ａの下流には、ブロアファン＆モータ２１ｃ（風量調整手段）とエバポレータ２１ｅ、エバポレータ温度センサ２１ｆ、温度調整用ダンパ＆モータ２１ｇ及びヒータ２１ｈで構成される温度調整部２１ｄ（温度調整手段）とが配設される。 The opening degree of the inside / outside air damper 21a can be adjusted by a stepping motor 21b (inside / outside air damper driving means).
Downstream of the inside / outside air damper 21a of the HVAC 21 is a temperature adjusting unit 21d (temperature) composed of a blower fan & motor 21c (air volume adjusting means), an evaporator 21e, an evaporator temperature sensor 21f, a temperature adjusting damper & motor 21g, and a heater 21h. Adjusting means).

ブロアファン＆モータ２１ｃは、外気導入口２１ｉ及び内気導入口２１ｊよりＨＶＡＣ２１内に空気を導入し、送風口２１ｋより温度調整された空気を室内へ送風するものである。
エバポレータ２１ｅ、コンプレッサ２２、コンデンサ２３、冷媒圧センサ２４、エキスパンションバルブ２５及びそれぞれを接続する配管２６により冷凍回路が構成される。配管２６内には、冷媒が充填されており、コンプレッサ２２、コンデンサ２３、冷媒圧センサ２４、エキスパンションバルブ２５、エバポレータ２１ｅの順で相変化しながら循環する。 The blower fan & motor 21c introduces air into the HVAC 21 from the outside air introduction port 21i and the inside air introduction port 21j, and blows air whose temperature is adjusted from the blower port 21k into the room.
The evaporator 21e, the compressor 22, the condenser 23, the refrigerant pressure sensor 24, the expansion valve 25, and the piping 26 connecting each of them constitute a refrigeration circuit. The pipe 26 is filled with a refrigerant and circulates while changing the phase in the order of the compressor 22, the condenser 23, the refrigerant pressure sensor 24, the expansion valve 25, and the evaporator 21e.

エバポレータ２１ｅは、空気と冷媒との熱交換により冷媒に吸熱させ、ＨＶＡＣ２１内に導入された空気を冷却し或いは除湿するものである。
コンプレッサ２２は、車両１駆動用のエンジン１１により駆動され、気化した冷媒を圧縮し液化するものである。
コンデンサ２３は、液化された高温の冷媒の熱を放熱するものである。 The evaporator 21e cools or dehumidifies the air introduced into the HVAC 21 by causing the refrigerant to absorb heat by heat exchange between the air and the refrigerant.
The compressor 22 is driven by the engine 11 for driving the vehicle 1 to compress and liquefy the vaporized refrigerant.
The capacitor 23 dissipates heat from the liquefied high-temperature refrigerant.

冷媒圧センサ２４は、冷媒の圧力を検出するものである。
エキスパンションバルブ２５は、液化した冷媒を霧化させ、気化を行いやすくするものである。
エバポレータ温度センサ２１ｆは、エバポレータ２１ｅの温度を検出するものである。
温度調整用ダンパ＆モータ２１ｇは、ヒータ２１ｈへの空気の流入量を調整するものである。 The refrigerant pressure sensor 24 detects the refrigerant pressure.
The expansion valve 25 atomizes the liquefied refrigerant to facilitate vaporization.
The evaporator temperature sensor 21f detects the temperature of the evaporator 21e.
The temperature adjusting damper & motor 21g adjusts the amount of air flowing into the heater 21h.

ヒータ２１ｈは、エンジン１１の冷却水路（図示せず）とヒータ配管２７で接続され、エンジン１１の冷却水路より循環される冷却水の熱を放熱し、ＨＶＡＣ２１内に導入された空気を暖めるものである。
なお、エンジン１１は、上記のように冷却水路がヒータ２１ｈとヒータ配管２７で接続されるとともにラジエータ１２と冷却水配管１３で接続されている。 The heater 21 h is connected to a cooling water channel (not shown) of the engine 11 by a heater pipe 27, dissipates heat of the cooling water circulated from the cooling water channel of the engine 11, and warms the air introduced into the HVAC 21. is there.
The engine 11 is connected to the cooling water passage by the heater 21h and the heater pipe 27 and also connected by the radiator 12 and the cooling water pipe 13 as described above.

ＥＮＧ−ＥＣＵ１４は、エンジン１１の総合的な制御を行うための制御装置であり、入出力装置、記憶装置（ＲＯＭ、ＲＡＭ、不揮発性ＲＡＭ等）及び中央演算処理装置（ＣＰＵ）等を含んで構成される。
Ａ／Ｃ−ＥＣＵ２８は、空調装置の総合的な制御を行うための制御装置であり、ＥＮＧ−ＥＣＵ１４と同様に入出力装置、記憶装置及びＣＰＵ等を含んで構成される。 The ENG-ECU 14 is a control device for performing overall control of the engine 11, and includes an input / output device, a storage device (ROM, RAM, nonvolatile RAM, etc.), a central processing unit (CPU), and the like. Is done.
The A / C-ECU 28 is a control device for performing comprehensive control of the air conditioner, and includes an input / output device, a storage device, a CPU, and the like, similar to the ENG-ECU 14.

Ａ／Ｃ−ＥＣＵ２８の入力側には、上記エバポレータ温度センサ２１ｆ、冷媒圧センサ２４、室外の温度を検出する外気温度センサ３１、室内の温度を検出する室内温度センサ３２の他、空調のファン段数（風量）、温度、内外気モードを設定する空調操作部２９及びＥＮＧ−ＥＣＵ１４が電気的に接続されており、これら各種センサ類からの検出情報、空調操作部２９の設定情報及びエンジン１１の運転状況が入力される。   On the input side of the A / C-ECU 28, in addition to the evaporator temperature sensor 21f, the refrigerant pressure sensor 24, the outdoor temperature sensor 31 that detects the outdoor temperature, the indoor temperature sensor 32 that detects the indoor temperature, the number of fan stages for air conditioning The air conditioning operation unit 29 and the ENG-ECU 14 for setting the (air volume), temperature, and inside / outside air mode are electrically connected. Detection information from these various sensors, setting information for the air conditioning operation unit 29, and operation of the engine 11 The status is entered.

一方、Ａ／Ｃ−ＥＣＵ２８の出力側には、上記ステッピングモータ２１ｂ、ブロアファン＆モータ２１ｃ、温度調整用ダンパ＆モータ２１ｇ及びコンプレッサ２２が電気的に接続されている。
これより、Ａ／Ｃ−ＥＣＵ２８は、各種センサ類からの検出情報、空調操作部２９の設定情報及びエンジン１１の運転状況に基づいて空調装置の動作内容を演算し、出力信号をステッピングモータ２１ｂ、ブロアファン＆モータ２１ｃ、温度調整用ダンパ＆モータ２１ｇ及びコンプレッサ２２へ供給し、出力信号に応じて内外気ダンパ２１ａの開度、ブロアファン＆モータ２１ｃのファン段数、温度調整用ダンパ＆モータ２１ｇの開度及びコンプレッサ２２の動作を切り替え、室内の温度を制御する。 On the other hand, the stepping motor 21b, the blower fan & motor 21c, the temperature adjusting damper & motor 21g, and the compressor 22 are electrically connected to the output side of the A / C-ECU 28.
Thus, the A / C-ECU 28 calculates the operation content of the air conditioner based on the detection information from the various sensors, the setting information of the air conditioning operation unit 29 and the operating state of the engine 11, and outputs the output signal to the stepping motor 21b, Supply to blower fan & motor 21c, temperature adjusting damper & motor 21g and compressor 22, and according to output signal, opening degree of inside / outside air damper 21a, number of fan stages of blower fan & motor 21c, temperature adjusting damper & motor 21g The indoor temperature is controlled by switching the opening and the operation of the compressor 22.

以下、このように構成された本発明に係るアイドリングストップ車両の空調装置の作用及び効果について説明する。
図２は、本発明に係るアイドリングストップ時のファン制御の概念を説明する説明図であり、図３は、本発明に係るアイドリングストップ時の内外気ダンパ開度制御の概念を説明する説明図であり、図４は、Ａ／Ｃ−ＥＣＵ２８の実行する本発明に係るアイドリングストップ時の空調装置の制御ルーチンを示すフローチャートである。 Hereinafter, the operation and effect of the air conditioning apparatus for an idling stop vehicle according to the present invention configured as described above will be described.
FIG. 2 is an explanatory diagram for explaining the concept of fan control at the time of idling stop according to the present invention, and FIG. 3 is an explanatory diagram for explaining the concept of inside / outside air damper opening degree control at the time of idling stop according to the present invention. FIG. 4 is a flowchart showing a control routine of the air conditioner during idling stop according to the present invention executed by the A / C-ECU 28.

図４に示すように、ステップＳ１０では、アイドリングストップの開始を判別する。判別結果が真（Ｙｅｓ）でアイドリングストップが開始されていれば、ステップＳ１２及びステップＳ２４に進み、内外気ダンパ開度制御とファン制御の二つの処理が並行して行われる。判別結果が偽（Ｎｏ）でアイドリングストップが開始されていなければ、ステップＳ１０に戻り再度判別をする。
[内外気ダンパ開度制御］
ステップＳ１２では、空調操作部２９の空気導入モードが外気モードか否かを判別する。判別結果が真（Ｙｅｓ）で外気モードであれば、ステップＳ１４に進む。判別結果が偽（Ｎｏ）で内気モードであれば、リターンに進み処理を終了する。 As shown in FIG. 4, in step S10, the start of idling stop is determined. If the determination result is true (Yes) and the idling stop is started, the process proceeds to step S12 and step S24, and two processes of the inside / outside air damper opening degree control and the fan control are performed in parallel. If the determination result is false (No) and the idling stop is not started, the process returns to step S10 and is determined again.
[Inside / outside air damper opening control]
In step S12, it is determined whether or not the air introduction mode of the air conditioning operation unit 29 is the outside air mode. If the determination result is true (Yes) and the outside air mode is selected, the process proceeds to step S14. If the determination result is false (No) and the inside air mode is selected, the process proceeds to return and the process is terminated.

ステップＳ１４では、外気温度センサ３１からの情報に基づき外気温度Ｔaが第１の所定温度Ｔ1（例えば１５℃）より低いか否かを判別する。判別結果が真（Ｙｅｓ）で第１の所定温度Ｔ1より低い場合は、スップＳ１６に進み、ステッピングモータ２１ｂを制御し、内外気ダンパ２１ａの開度θdを第１の所定開度θ1（例えば２０％）とする。判別結果が偽（Ｎｏ）で第１の所定温度Ｔ1以上である場合は、ステップＳ１８に進む。   In step S14, based on the information from the outside air temperature sensor 31, it is determined whether or not the outside air temperature Ta is lower than a first predetermined temperature T1 (for example, 15 ° C.). When the determination result is true (Yes) and lower than the first predetermined temperature T1, the process proceeds to step S16, the stepping motor 21b is controlled, and the opening degree θd of the inside / outside air damper 21a is set to the first predetermined opening degree θ1 (for example, 20). %). If the determination result is false (No) and is equal to or higher than the first predetermined temperature T1, the process proceeds to step S18.

ここに、内外気ダンパ２１ａの開度θd（０〜１００％）は、値が大きくなるほど内気導入量が増加し、小さくなるほど外気導入量が増加する。
ステップＳ１８では、外気温度Ｔaが第２の所定温度Ｔ2（例えば３０℃）以上であるか否かを判別する。判別結果が真（Ｙｅｓ）で第２の所定温度Ｔ2以上である場合は、ステップＳ２０に進み、ステッピングモータ２１ｂを制御し、内外気ダンパ２１ａの開度θdを第２の所定開度θ2（例えば８０％）とする。判別結果が偽（Ｎｏ）で第２の所定温度Ｔ2より低い場合は、図３に示す第１の所定温度Ｔ1と第１の所定開度θ1との交点と、第２の所定温度Ｔ2と第２の所定開度θ2との交点とを線形補間し、外気温度Ｔaとの交点における開度θxが内外気ダンパ２１ａの開度θdとなる。故に、ステップＳ２２に進み、ステッピングモータ２１ｂを制御し、内外気ダンパ２１ａの開度θdを開度θxとする。 Here, as the opening degree θd (0 to 100%) of the inside / outside air damper 21a increases, the inside air introduction amount increases as the value increases, and the outside air introduction amount increases as the value decreases.
In step S18, it is determined whether or not the outside air temperature Ta is equal to or higher than a second predetermined temperature T2 (for example, 30 ° C.). When the determination result is true (Yes) and is equal to or higher than the second predetermined temperature T2, the process proceeds to step S20, the stepping motor 21b is controlled, and the opening degree θd of the inside / outside air damper 21a is set to the second predetermined opening degree θ2 (for example, 80%). If the determination result is false (No) and is lower than the second predetermined temperature T2, the intersection of the first predetermined temperature T1 and the first predetermined opening θ1 shown in FIG. 3, the second predetermined temperature T2 and the second predetermined temperature T2 The degree of opening θx at the point of intersection with the outside air temperature Ta becomes the degree of opening θd of the inside / outside air damper 21a. Therefore, it progresses to step S22, the stepping motor 21b is controlled, and the opening degree (theta) d of the inside / outside air damper 21a is made into the opening degree (theta) x.

なお、開度θxは、次式で表すことができる。
θx＝（（θ2−θ1）／（Ｔ2−Ｔ1））×Ｔa
−（（（θ2−θ1）／（Ｔ2−Ｔ1））×Ｔ1−θ1）
［ファン制御］
ステップＳ２４では、ファン段数が所定のファン段数Ｌｏ2以上であるか否かを判別する。判別結果が真（Ｙｅｓ）でファン段数がＬｏ2以上の場合（例えばＨｉ）は、ステップＳ２６に進み、ファン段数をＬｏ2とする。判別結果が偽（Ｎｏ）でファン段数Lｏ2より低い場合（例えばＬｏ1）は、ファン段数を維持する。 The opening degree θx can be expressed by the following equation.
θx = ((θ2−θ1) / (T2−T1)) × Ta
− (((Θ2−θ1) / (T2−T1)) × T1−θ1)
[Fan control]
In step S24, it is determined whether or not the fan stage number is equal to or greater than a predetermined fan stage number Lo2. When the determination result is true (Yes) and the fan stage number is Lo2 or more (for example, Hi), the process proceeds to step S26, and the fan stage number is set to Lo2. When the determination result is false (No) and lower than the fan stage number Lo2 (for example, Lo1), the fan stage number is maintained.

このように、本発明の実施例に係るアイドリングストップ車両の空調装置によれば、低外気温時には、内外気ダンパ２１ａの開度θdを小さくし、外気導入量を多くすることにより室内への送風を外気に近づけることができる。これにより、暖房性能を確保しつつ低外気温時に発生する窓曇りを防止することが可能である。
一方、高外気温時には、内外気ダンパ２１ａの開度θdを大きくし、外気導入量を少なく抑えることにより車室内の空調された空気の温度上昇を抑えることができる。 As described above, according to the air conditioning apparatus for an idling stop vehicle according to the embodiment of the present invention, when the outside air temperature is low, the opening degree θd of the inside / outside air damper 21a is reduced and the outside air introduction amount is increased to increase the ventilation to the room. Can be brought close to the open air. Thereby, it is possible to prevent the window fogging generated at the time of low outside air temperature while ensuring the heating performance.
On the other hand, when the outside air temperature is high, the opening degree θd of the inside / outside air damper 21a is increased to suppress the outside air introduction amount, thereby suppressing the temperature rise of the conditioned air in the passenger compartment.

また、アイドリングストップ時にファン段数をＬｏ2以下とし、特にファン段数がファン段数Lｏ2より低い場合（例えばＬｏ1）はファン段数を維持するので、外気によるエバポレータ２１ｅ自体の温度上昇や温度低下を抑えることができる。
これにより、夏季のアイドリングストップ時には、内外気ダンパ２１ａの開度θdを大きくしてエバポレータ２１ｅを通過する暖かい外気を少なくすることができ、冷風を長時間確保することができ、アイドリングストップ時の快適性を確保しつつ、アイドリングストップ時間を長くすることが可能である。また、冬季のアイドリングストップ時には、エバポレータ２１ｅを通過する冷たい外気を少なく抑えつつも外気温度Ｔaに応じて内外気ダンパ２１ａの開度θdを小さくして外気を導入でき、暖房性能を確保しつつ窓曇りの発生を防止することができる。 Further, when idling is stopped, the number of fan stages is set to Lo2 or less, and particularly when the number of fan stages is lower than the number of fan stages Lo2 (eg, Lo1), the number of fan stages is maintained. .
As a result, when idling stops in summer, the opening degree θd of the inside / outside air damper 21a can be increased to reduce warm outside air passing through the evaporator 21e, cold air can be secured for a long time, and comfort when idling is stopped. It is possible to lengthen the idling stop time while securing the property. Further, when idling is stopped in winter, it is possible to introduce the outside air by reducing the opening degree θd of the inside / outside air damper 21a according to the outside air temperature Ta while keeping the cold outside air passing through the evaporator 21e small, and while ensuring the heating performance, the window The occurrence of fogging can be prevented.

以上で発明の実施形態の説明を終えるが、本発明の形態はこの実施形態に限定されるものではない。
例えば、上記実施形態では、温度調整手段を冷凍回路に介装されたエバポレータ２１ｄを含んで構成し、冷媒との熱交換により温度調整を行うようにしたが、エンジン１１の作動と連動するものであれば温度調整手段はこれに限られるものではない。 This is the end of the description of the embodiment of the invention. However, the embodiment of the present invention is not limited to this embodiment.
For example, in the above embodiment, the temperature adjusting means is configured to include the evaporator 21d interposed in the refrigeration circuit, and the temperature adjustment is performed by heat exchange with the refrigerant. If there is, the temperature adjusting means is not limited to this.

また、上記実施形態では、内外気ダンパ２１ａをステッピングモータ２１ｂで作動させているが、内外気ダンパ２１ａの開度をポジションメータで検出しながらサーボモータで作動させてもよい。   In the above embodiment, the inside / outside air damper 21a is operated by the stepping motor 21b. However, the inside / outside air damper 21a may be operated by the servo motor while detecting the opening degree of the inside / outside air damper 21a by the position meter.

１１ エンジン
２１ ＨＶＡＣ（空調ユニット）
２１ａ 内外気ダンパ
２１ｂ ステッピングモータ（内外気ダンパ駆動手段）
２１ｃ ブロアファン＆モータ（風量調整手段）
２１ｄ 温度調整部（温度調整手段）
２１ｅ エバポレータ
２１ｈ ヒータ
２２ コンプレッサ
２８ Ａ／Ｃ−ＥＣＵ
２９ 空調操作部
３１ 外気温度センサ（外気温度検出手段） 11 Engine 21 HVAC (air conditioning unit)
21a Inside / outside air damper 21b Stepping motor (inside / outside air damper driving means)
21c Blower fan & motor (air flow adjustment means)
21d Temperature adjustment part (temperature adjustment means)
21e Evaporator 21h Heater 22 Compressor 28 A / C-ECU
29 Air-conditioning operation part 31 Outside temperature sensor (outside temperature detection means)

Claims (3)

エンジンのアイドリングストップを行う車両に搭載され、車室外の外気と車室内の内気とを内気導入口及び外気導入口からそれぞれ導入して吹き出し口から車内に排出する空調ダクト内に前記内気導入口及び前記外気導入口との下流に位置して配設された内気と外気を切り換える内外気ダンパ及び該内外気ダンパを駆動する内外気ダンパ駆動手段からなり、内気と外気の導入割合を調整する内外気割合調整手段と、前記空調ダクト内に前記内外気割合調整手段の下流に位置して配設され、導入する空気の風量を調整する風量調整手段と、前記空調ダクト内に前記風量調整手段の下流に位置して配設され、前記エンジンの作動に連動し、導入した空気の温度を調整する温度調整手段と、外気温度を検出する外気温度検出手段とを備えたアイドリングストップ車両の空調装置において、
前記内外気割合調整手段は、車両がアイドリングストップ状態にあるとき、前記外気温度検出手段により検出された外気温度が第１の所定温度より低いと、前記内外気ダンパの開度を第１の所定開度として内気よりも外気の導入割合を多くし、外気温度が第２の所定温度以上であると、前記内外気ダンパの開度を第２の所定開度として外気よりも内気の導入割合を多くし、外気温度が前記第１の所定温度以上であり前記第２の所定温度より低いと、外気温度に応じて前記内外気ダンパの開度を前記第１の所定開度と前記第２の所定開度との間で調整し、
前記風量調整手段は、車両がアイドリングストップ状態にあるとき、空気の風量が所定量以上であると、空気の風量を前記所定量とすることを特徴とするアイドリングストップ車両の空調装置。 The inside air inlet and The inside / outside air that adjusts the introduction ratio between the inside air and the outside air, comprising an inside / outside air damper that is disposed downstream of the outside air introduction port and switches between the inside air and the outside air, and an inside / outside air damper driving means that drives the inside / outside air damper. A ratio adjusting means, an air volume adjusting means disposed in the air conditioning duct downstream of the inside / outside air ratio adjusting means, for adjusting an air volume of the air to be introduced; and in the air conditioning duct, downstream of the air volume adjusting means. An idler comprising a temperature adjusting means for adjusting the temperature of the introduced air, and an outside air temperature detecting means for detecting the outside air temperature, which are disposed at a position interlocked with the operation of the engine. In the air conditioning apparatus of Gusutoppu vehicle,
The inside / outside air ratio adjusting means sets the opening degree of the inside / outside air damper to a first predetermined amount when the outside air temperature detected by the outside air temperature detecting means is lower than a first predetermined temperature when the vehicle is in an idling stop state. If the outside air introduction ratio is increased as the opening degree than the inside air, and the outside air temperature is equal to or higher than the second predetermined temperature, the opening degree of the inside / outside air damper is set as the second predetermined opening degree, and the introduction ratio of the inside air than the outside air is set. When the outside air temperature is equal to or higher than the first predetermined temperature and lower than the second predetermined temperature, the opening degree of the inside / outside air damper is changed according to the outside air temperature to the first predetermined opening and the second predetermined temperature. Adjust between the predetermined opening,
An air conditioning apparatus for an idling stop vehicle, wherein the air volume adjusting means sets the air volume to the predetermined amount when the air volume is equal to or greater than a predetermined amount when the vehicle is in an idling stop state. 前記温度調整手段は、冷媒を前記エンジンにより駆動されるコンプレッサにより圧縮しながら放熱と吸熱とにより相変化させつつ循環させる冷凍回路に介装され、前記冷媒と前記空調ダクト内に導入した空気との間で熱交換を行うエバポレータを含むことを特徴とする、請求項１のアイドリングストップ車両の空調装置。   The temperature adjusting means is interposed in a refrigeration circuit that circulates while changing the phase by heat dissipation and heat absorption while compressing the refrigerant by a compressor driven by the engine, and between the refrigerant and air introduced into the air conditioning duct An air conditioner for an idling stop vehicle according to claim 1, further comprising an evaporator that exchanges heat between the two. 前記風量調整手段は、車両がアイドリングストップ状態にあるとき、空気の風量が前記所定量より小さいと、その風量を維持することを特徴とする、請求項１または２のアイドリングストップ車両の空調装置。   3. The air conditioning apparatus for an idling stop vehicle according to claim 1, wherein when the vehicle is in an idling stop state, the air volume adjusting means maintains the air volume when the air volume is smaller than the predetermined amount.
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