FR2697476A1 - Control system for air conditioning unit of motor vehicle - uses electronic control of division of air flow from circulation fan between cabin and engine cooling system - Google Patents

Control system for air conditioning unit of motor vehicle - uses electronic control of division of air flow from circulation fan between cabin and engine cooling system Download PDF

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Publication number
FR2697476A1
FR2697476A1 FR9213003A FR9213003A FR2697476A1 FR 2697476 A1 FR2697476 A1 FR 2697476A1 FR 9213003 A FR9213003 A FR 9213003A FR 9213003 A FR9213003 A FR 9213003A FR 2697476 A1 FR2697476 A1 FR 2697476A1
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France
Prior art keywords
vehicle
radiator
air
flap
fan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR9213003A
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French (fr)
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FR2697476B1 (en
Inventor
Colinet Andre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Priority to FR9213003A priority Critical patent/FR2697476B1/en
Publication of FR2697476A1 publication Critical patent/FR2697476A1/en
Application granted granted Critical
Publication of FR2697476B1 publication Critical patent/FR2697476B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821—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
    • B60H1/00864—Ventilators and damper doors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/026—Thermostatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/08—Cabin heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The control system operates with a system having a heating radiator (7) and an evaporator (10) in ducts, placed in series with a motor driven fan (11). A temperature transducer (13) generates a signal for the electronic controller (14) that delivers signals to actuators (15,18) that control the position of vanes (16,17) directing air flow. The controller also controls the fan motor. The first vane (16) between the radiator and the evaporator divides air flow between the cabin and the motor coolant, while the second vane controls the extraction of air from the cabin. ADVANTAGE - Ensures continued operation of air conditioning under all conditions of weather and engine loading.

Description

SYSTEME DE REGULATION D'UNE INSTALLATION DE
CLIMATISATION POUR VEHICULES AUTOMOBILES
L'invention concerne un système de régulation d'une installation de climatisation pour véhicules automobiles dans laquelle un évaporateur et un radiateur de chauffage sont montés en série avec un moto-ventilateur dans une structure portée par le véhicule, et dans lequel un capteur de température d'eau génère un signal de commande d'une unité électronique qui fournit des signaux à des moyens de réglage de la position de volets d'ajustement du débit d'air de climatisation afin d'assurer un complément de refroidissement du moteur thermique.SYSTEM FOR REGULATING A
AIR CONDITIONING FOR MOTOR VEHICLES
The invention relates to a system for regulating an air conditioning installation for motor vehicles in which an evaporator and a heating radiator are mounted in series with a motor-fan in a structure carried by the vehicle, and in which a temperature sensor of water generates a control signal from an electronic unit which supplies signals to means for adjusting the position of flaps for adjusting the air conditioning air flow rate in order to provide additional cooling of the heat engine.

La publication US-A-4337818 décrit une telle installation de climatisation dans laquelle un système de régulation de la température de l'habitacle du véhicule automobile pilote la mise en circulation du fluide de refroidissement en réponse au signal délivré par un capteur de température.The publication US-A-4337818 describes such an air conditioning installation in which a system for regulating the temperature of the passenger compartment of the motor vehicle controls the circulation of the coolant in response to the signal delivered by a temperature sensor.

La publication FR-A-2503056 décrit un système d'ajustement de la température qui fait application de volets pilotés en réponse à l'écart entre la température de l'habitacle et une température sélectionnée.The publication FR-A-2503056 describes a temperature adjustment system which applies flaps controlled in response to the difference between the temperature of the passenger compartment and a selected temperature.

Lorsque les échangeurs du système de refroidissement du moteur thermique et de l'installation de climatisation sont portés par une même structure, le dégagement de chaleur du condenseur du fluide frigorigène perturbe le flux d'air de refroidissement du moteur.When the exchangers of the engine cooling system and the air conditioning system are carried by the same structure, the release of heat from the refrigerant condenser disturbs the flow of engine cooling air.

Dans certaines conditions le refroidissement du liquide caloporteur du moteur thermique est mal assuré notamment lorsque les conditions climatiques et de charge du moteur sont défavorables.Under certain conditions, the cooling of the heat transfer fluid of the heat engine is poorly assured, in particular when the climatic and engine load conditions are unfavorable.

Pour remédier à cet inconvénient il peut être nécessaire d'interrompre la circulation du fluide frigorigène.To remedy this drawback it may be necessary to interrupt the circulation of the refrigerant.

La mise hors service de l'installation de climatisation qui en résulte supprime le confort thermique des occupants du véhicule. The resulting deactivation of the air conditioning system eliminates the thermal comfort of the occupants of the vehicle.

L'invention a pour objet de remédier à cet inconvénient en proposant un système de régulation d'une installation de climatisation dans lequel une division du flux d'air débité par le moto-ventilateur assure le refroidissement du liquide caloporteur.The object of the invention is to remedy this drawback by proposing a system for regulating an air conditioning installation in which a division of the air flow supplied by the motor-fan cools the heat-transfer liquid.

Selon l'invention un premier volet disposé entre l'évaporateur et le radiateur assure la division partielle du débit d'air d'alimentation d'un boîtier distributeur de l'air de chauffage et de ventilation dans l'habitacle du véhicule et un deuxième volet piloté disposé dans un conduit d'évacuation de l'air débouchant à l'extérieur du véhicule est monté en aval du radiateur dans le but d'assurer l'extraction partielle de l'air chaud par suite d'une augmentation dudit débit du moto-ventilateur et de la délivrance du signal de commande à l'unité électronique.According to the invention a first flap disposed between the evaporator and the radiator ensures the partial division of the supply air flow of a distributor box for the heating and ventilation air in the passenger compartment of the vehicle and a second piloted shutter disposed in an air evacuation duct leading to the outside of the vehicle is mounted downstream of the radiator in order to ensure the partial extraction of hot air as a result of an increase in said flow rate of the motor fan and the issuance of the control signal to the electronic unit.

Le système de régulation ainsi réalisé permet un réglage de la température de l'habitacle du véhicule automobile en refroidissant simultanément le liquide caloporteur du moteur thermique traversant le radiateur de l'installation de climatisation.The regulation system thus produced allows the temperature of the passenger compartment of the motor vehicle to be adjusted by simultaneously cooling the heat transfer fluid of the heat engine passing through the radiator of the air conditioning installation.

D'autres caractéristiques et avantages du système de régulation apparaîtront à la lecture de la description en référence au dessin annexé dans lequel: - la figure 1 est une représentation schématique de l'installation vue en
plan en correspondance avec l'état de fonctionnement normal du
climatiseur.Other characteristics and advantages of the regulation system will appear on reading the description with reference to the accompanying drawing in which: - Figure 1 is a schematic representation of the installation seen in
plan in correspondence with the normal operating state of the
air conditioner.

- la figure 2 est une représentation schématique de l'installation
représentée à la figure 1 en correspondance avec l'état de
refroidissement du liquide caloporteur.- Figure 2 is a schematic representation of the installation
represented in FIG. 1 in correspondence with the state of
cooling of the heat transfer liquid.

La figure 1 représente une installation de climatisation d'un habitacle 1 dont la partie avant porte un ensemble distributeur de l'air 2. L'ensemble distributeur 2 est raccordé à une ouverture 3 d'une structure fermée constituée à titre d'exemple par une poutre creuse transversale 4 qui fait partie de l'ossature du véhicule. FIG. 1 represents an air conditioning installation for a passenger compartment 1, the front part of which carries an air distributor assembly 2. The distributor assembly 2 is connected to an opening 3 of a closed structure constituted, for example, by a transverse hollow beam 4 which forms part of the framework of the vehicle.

La poutre 4 renferme un boîtier 6 support du radiateur de chauffage 7 alimenté au moyen de canalisations 8 par le liquide caloporteur du circuit de refroidissement non représenté du moteur thermique.The beam 4 contains a housing 6 supporting the heating radiator 7 supplied by means of pipes 8 by the coolant of the cooling circuit not shown of the heat engine.

Un évaporateur de refroidissement 10 est monté en série conjointement avec le radiateur 7, avec un moto-ventilateur 11.A cooling evaporator 10 is mounted in series together with the radiator 7, with a motor-fan 11.

Le boîtier 6 s'étend transversalement dans la poutre 4 par un conduit d'évacuation 12 qui débouche à l'extérieur du véhicule dans une zone mise en dépression aérodynamique au cours de l'avancement du véhicule, telle qu'un passage de roue du véhicule.The housing 6 extends transversely in the beam 4 by a discharge duct 12 which opens to the outside of the vehicle in an area placed under aerodynamic depression during the advancement of the vehicle, such as a wheel arch of the vehicle.

Le système de régulation de l'installation est constitué par un circuit de mesure dans lequel un capteur de température 13 placé dans la canalisation 8 génère un signal de commande d'une unité électronique 14. L'unité 14 fournit des signaux à un actionneur 15 de réglage de la position d'un premier volet 16 et à l'actionneur 18 de réglage d'un deuxième volet 17 et au moto-ventilateur pour ajuster le débit d'air de climatisation.The system for regulating the installation consists of a measurement circuit in which a temperature sensor 13 placed in the pipeline 8 generates a control signal from an electronic unit 14. The unit 14 supplies signals to an actuator 15 for adjusting the position of a first shutter 16 and to the actuator 18 for adjusting a second shutter 17 and at the motor-fan to adjust the air conditioning air flow.

Le volet piloté 16 est localisé dans le boîtier 6 entre le radiateur 7 et l'évaporateur 10.The piloted flap 16 is located in the box 6 between the radiator 7 and the evaporator 10.

Lorsque le volet 16 est déplacé dans une position d'ouverture représentée à la figure 2 par suite de la délivrance du signal de réglage, le débit d'air du moto-ventilateur 11 est divisé. Une partie du débit est alors dirigée vers le distributeur 2 et une autre partie du débit est dirigée vers le radiateur 7.When the flap 16 is moved to an open position shown in Figure 2 as a result of the delivery of the adjustment signal, the air flow of the motor fan 11 is divided. Part of the flow is then directed to the distributor 2 and another part of the flow is directed to the radiator 7.

Par suite de la délivrance d'un signal de réglage, l'actionneur 18 ouvre le deuxième volet 17 et l'air de refroidissement dirigé vers le radiateur 7 est rejeté à l'extérieur par le conduit d'évacuation 12 dans la zone de dépression aérodynamique choisie.Following the delivery of an adjustment signal, the actuator 18 opens the second flap 17 and the cooling air directed towards the radiator 7 is discharged to the outside by the exhaust duct 12 in the vacuum zone aerodynamics chosen.

En fonctionnement normal le conduit 12 est fermé par le volet 17. Le premier volet 16 et la vitesse du moto-ventilateur 1 1 sont pilotés par l'unité électronique 14. L'air est alors introduit sélectivement dans l'habitacle par l'ensemble distributeur 2. In normal operation the duct 12 is closed by the flap 17. The first flap 16 and the speed of the motor-fan 1 1 are controlled by the electronic unit 14. The air is then selectively introduced into the passenger compartment by the assembly distributor 2.

Lorsque la température du liquide de refroidissement dans le radiateur 7 atteint le seuil de fonctionnement du capteur 13, l'unité électronique 14 délivre à l'actionneur 15 un signal de commande du premier volet 16.When the temperature of the coolant in the radiator 7 reaches the operating threshold of the sensor 13, the electronic unit 14 delivers to the actuator 15 a control signal from the first flap 16.

Ce dernier est déplacé dans une position médiane.The latter is moved to a middle position.

L'unité électronique 14 délivre à l'actionneur 18, un signal de commande d'ouverture du deuxième volet 17 et un signal d'augmentation de la vitesse du moto-ventilateur 11.The electronic unit 14 delivers to the actuator 18, a signal for controlling the opening of the second flap 17 and a signal for increasing the speed of the motor-fan 11.

L'ensemble des signaux de commande assure alors un refroidissement accéléré du liquide caloporteur du radiateur 7 et une évacuation de l'air chaud par le conduit 12. Par contre la distribution de l'air dans l'habitacle demeure suffisante pour maintenir le confort thermique des occupants du véhicule. All of the control signals then provide accelerated cooling of the heat-transfer liquid from the radiator 7 and evacuation of the hot air through the duct 12. On the other hand, the distribution of air in the passenger compartment remains sufficient to maintain thermal comfort occupants of the vehicle.

Claims (3)

REVENDICATIONS 1) Système de régulation d'une installation de climatisation d'habitacle de 1) Regulation system for a cabin air conditioning installation of véhicule automobile, dans laquelle un radiateur de chauffage (7) et un motor vehicle, in which a heating radiator (7) and a évaporateur (10) sont montés en série avec un moto-ventilateur (11) evaporator (10) are connected in series with a motor-fan (11) dans une structure (4) portée par le véhicule et dans lequel un capteur in a structure (4) carried by the vehicle and in which a sensor de température (13) génère un signal de commande d'une unité temperature (13) generates a control signal of a unit électronique (14) qui fournit des signaux à des moyens de réglage (15 et electronic (14) which provides signals to regulating means (15 and électronique (14). electronic (14). moto-ventilateur et de la délivrance du signal de commande à l'unité motor fan and the issuance of the control signal to the unit partielle de l'air chaud par suite d'une augmentation dudit débit du partial hot air due to an increase in said flow rate monté en aval du radiateur (7) dans le but d'assurer l'extraction mounted downstream of the radiator (7) in order to ensure extraction d'évacuation (12) de l'air débouchant à l'extérieur du véhicule est exhaust air outlet (12) to the outside of the vehicle is véhicule et qu'un deuxième volet (17) piloté disposé dans un conduit vehicle and a second controlled flap (17) disposed in a conduit distributeur de l'air de chauffage et de ventilation dans l'habitacle du distributor of heating and ventilation air in the passenger compartment of the division partielle du débit d'air d'alimentation d'un boîtier (2) partial division of the supply air flow of a box (2) (16) piloté, disposé entre le radiateur (7) et l'évaporateur (10) assure la (16) piloted, disposed between the radiator (7) and the evaporator (10) ensures the le débit d'air de climatisation, caractérisé par le fait qu'un premier volet the air conditioning air flow, characterized in that a first flap 18) de la position de volets (16, 17) et au ventilateur (11) pour ajuster 18) of the flap position (16, 17) and to the fan (11) to adjust 2) Système de régulation selon la revendication 1, caractérisé par le fait2) regulation system according to claim 1, characterized in that que le radiateur (7) est traversé par une canalisation de transport du that the radiator (7) is crossed by a pipe for transporting the liquide caloporteur du système de refroidissement du moteur thermique heat transfer liquid from the engine cooling system du véhicule et que le signal généré par le capteur de température (13) of the vehicle and that the signal generated by the temperature sensor (13) monté dans ladite canalisation commande l'unité électronique dans le mounted in said pipe controls the electronic unit in the sens d'un réglage de la position du premier volet (16), de la manoeuvre direction of adjustment of the position of the first flap (16), of the operation du deuxième volet (17), et de l'ajustage de la vitesse du moto the second flap (17), and the adjustment of the speed of the motorcycle ventilateur (11). fan (11). 3) Système de régulation selon la revendication 2, caractérisé par le fait3) regulation system according to claim 2, characterized in that que le conduit d'évacuation (12) débouche dans une zone de dépression that the exhaust duct (12) opens into a vacuum zone aérodynamique au cours de l'avancement du véhicule.  aerodynamics during the advancement of the vehicle.
FR9213003A 1992-10-30 1992-10-30 Regulation system of an air conditioning system for motor vehicles. Expired - Fee Related FR2697476B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9213003A FR2697476B1 (en) 1992-10-30 1992-10-30 Regulation system of an air conditioning system for motor vehicles.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9213003A FR2697476B1 (en) 1992-10-30 1992-10-30 Regulation system of an air conditioning system for motor vehicles.

Publications (2)

Publication Number Publication Date
FR2697476A1 true FR2697476A1 (en) 1994-05-06
FR2697476B1 FR2697476B1 (en) 1994-11-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2741301A1 (en) * 1995-11-17 1997-05-23 Renault Air recycling control system for vehicle passenger compartment
FR2840258A1 (en) * 2002-05-30 2003-12-05 Renault Sa Air conditioning unit for vehicle cabin, comprises distribution butterfly valve which directs input air directly to cabin, through electrical resistance to cabin or through engine radiator to cabin
EP1407906A1 (en) * 2002-10-11 2004-04-14 Valeo Climatisation Device for the thermal control for a motor vehicle passenger compartment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1086694A (en) * 1964-10-16 1967-10-11 Renault Improvements in the cooling of engines and the air-conditioning of vehicles
FR2524060A1 (en) * 1982-03-23 1983-09-30 Renault Vehicules Ind Cooling system for motor vehicle heat engine - uses main and auxiliary radiator, latter having enclosure permitting air to be directed to vehicle heating or cooling
US4417618A (en) * 1980-06-27 1983-11-29 Nippondenso Co., Ltd. Air-conditioner control system for vehicles
JPH02220916A (en) * 1989-02-22 1990-09-04 Mitsubishi Automob Eng Co Ltd Air conditioning system for automobile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1086694A (en) * 1964-10-16 1967-10-11 Renault Improvements in the cooling of engines and the air-conditioning of vehicles
US4417618A (en) * 1980-06-27 1983-11-29 Nippondenso Co., Ltd. Air-conditioner control system for vehicles
FR2524060A1 (en) * 1982-03-23 1983-09-30 Renault Vehicules Ind Cooling system for motor vehicle heat engine - uses main and auxiliary radiator, latter having enclosure permitting air to be directed to vehicle heating or cooling
JPH02220916A (en) * 1989-02-22 1990-09-04 Mitsubishi Automob Eng Co Ltd Air conditioning system for automobile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 523 (M-1049)4 Septembre 1990 & JP-A-02 220 916 ( MITSHUBISHI AUTOMOB. ) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2741301A1 (en) * 1995-11-17 1997-05-23 Renault Air recycling control system for vehicle passenger compartment
FR2840258A1 (en) * 2002-05-30 2003-12-05 Renault Sa Air conditioning unit for vehicle cabin, comprises distribution butterfly valve which directs input air directly to cabin, through electrical resistance to cabin or through engine radiator to cabin
EP1407906A1 (en) * 2002-10-11 2004-04-14 Valeo Climatisation Device for the thermal control for a motor vehicle passenger compartment
FR2845641A1 (en) * 2002-10-11 2004-04-16 Valeo Climatisation THERMAL REGULATION DEVICE FOR A MOTOR VEHICLE INTERIOR

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