FR2861163A1 - Air flow temperature adjusting device for motor vehicle, has evaporator and reservoir with fluid coolant circulating between them so that coolant is cooled by another coolant in evaporator and chillness is restored to air flow in evaporator - Google Patents

Air flow temperature adjusting device for motor vehicle, has evaporator and reservoir with fluid coolant circulating between them so that coolant is cooled by another coolant in evaporator and chillness is restored to air flow in evaporator Download PDF

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Publication number
FR2861163A1
FR2861163A1 FR0312292A FR0312292A FR2861163A1 FR 2861163 A1 FR2861163 A1 FR 2861163A1 FR 0312292 A FR0312292 A FR 0312292A FR 0312292 A FR0312292 A FR 0312292A FR 2861163 A1 FR2861163 A1 FR 2861163A1
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FR
France
Prior art keywords
evaporator
air flow
coolant
cooled
cold
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
FR0312292A
Other languages
French (fr)
Other versions
FR2861163B1 (en
Inventor
Regine Haller
Didier Loup
Loic Lepetit
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.)
Valeo Climatisation SA
Original Assignee
Valeo Climatisation SA
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 Valeo Climatisation SA filed Critical Valeo Climatisation SA
Priority to FR0312292A priority Critical patent/FR2861163B1/en
Priority to EP04805236A priority patent/EP1682368A1/en
Priority to US10/575,373 priority patent/US20070119197A1/en
Priority to PCT/FR2004/002672 priority patent/WO2005039903A1/en
Publication of FR2861163A1 publication Critical patent/FR2861163A1/en
Application granted granted Critical
Publication of FR2861163B1 publication Critical patent/FR2861163B1/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
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3205—Control means therefor
    • B60H1/322—Control means therefor for improving the stop or idling operation of the engine
    • 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
    • B60H1/00492—Heating, cooling or ventilating [HVAC] devices comprising regenerative heating or cooling means, e.g. heat accumulators
    • B60H1/005—Regenerative cooling means, e.g. cold accumulators
    • 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
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3228—Cooling devices using compression characterised by refrigerant circuit configurations
    • B60H1/32281—Cooling devices using compression characterised by refrigerant circuit configurations comprising a single secondary circuit, e.g. at evaporator or condenser side
    • 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
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/323—Cooling devices using compression characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices

Abstract

The device has an evaporator with air circulating in a closed loop across it and cooled by a fluid coolant. Another fluid coolant is circulated between the evaporator and a reservoir such that the coolant is cooled by the former fluid coolant in the evaporator. The chilled fluid coolant is then accumulated in the reservoir and the chillness is restored to the air flow in the evaporator.

Description

VCL1490.FRD Dispositif d'accumulation de froid pour évaporateurVCL1490.FRD Chiller for evaporator

L'invention concerne un dispositif pour régler la température d'un flux d'air, notamment pour la climatisation de l'habitacle d'un véhicule, comprenant une première boucle fermée contenant un évaporateur propre à être traversé par ledit flux d'air et dans laquelle un premier fluide caloporteur peut circuler de manière à céder du froid audit flux d'air dans l'évaporateur.  The invention relates to a device for regulating the temperature of an air flow, in particular for the air conditioning of the passenger compartment of a vehicle, comprising a first closed loop containing an evaporator capable of being traversed by said air flow and wherein a first heat transfer fluid can circulate to give cold air to said flow of air in the evaporator.

Dans le cas particulier de la climatisation d'un véhicule automobile, l'évaporateur est parcouru par un fluide réfrigé- rant afin de refroidir le flux d'air et produire de l'air réfrigéré qui est envoyé dans l'habitacle du véhicule.  In the particular case of air conditioning of a motor vehicle, the evaporator is traversed by a refrigerant fluid to cool the air flow and produce refrigerated air that is sent into the passenger compartment of the vehicle.

Dans un circuit de climatisation classique, le fluide réfrigérant traverse, dans cet ordre, un compresseur, un condenseur, un détendeur et un évaporateur, avant de retourner au compresseur. Dans l'évaporateur, le fluide réfrigérant passe d'une phase liquide ou d'une phase liquide/vapeur à une phase vapeur en recevant de la chaleur du flux d'air qui se trouve ainsi refroidi. Un tel circuit est parcouru classique- ment par un fluide réfrigérant constitué par un hydrocarbure fluoré tel que celui connu sous la désignation R 134 A. On connaît aussi des circuits de climatisation parcourus par un fluide réfrigérant fonctionnant selon un cycle supercriti-30 que, comme par exemple CO2.  In a conventional air conditioning circuit, the refrigerant passes through a compressor, a condenser, a pressure reducer and an evaporator in this order before returning to the compressor. In the evaporator, the coolant passes from a liquid phase or a liquid / vapor phase to a vapor phase by receiving heat from the air stream which is thus cooled. Such a circuit is conventionally traversed by a refrigerant fluid constituted by a fluorinated hydrocarbon such as that known under the designation R 134 A. Air conditioning circuits are also known which run through a refrigerant fluid operating in a supercriti-30 cycle. for example CO2.

Un inconvénient des évaporateurs connus est que leur capacité à refroidir le flux d'air dépend du fonctionnement du compresseur. Autrement dit, le flux d'air n'est plus refroidi dès lors que le compresseur est arrêté.  A disadvantage of known evaporators is that their ability to cool the airflow depends on the operation of the compressor. In other words, the air flow is no longer cooled when the compressor is stopped.

Or, dans la plupart des véhicules automobiles, le compresseur est entraîné par l'intermédiaire du moteur et est donc mis hors de fonctionnement dès que le moteur se trouve arrêté.  However, in most motor vehicles, the compressor is driven through the engine and is therefore out of operation as soon as the engine is stopped.

2861163 2 Dans le cadre des normes anti-pollution, on envisage de réaliser des véhicules automobiles qui assurent un arrêt du moteur à combustion interne lorsque le véhicule est au point mort, puis un redémarrage du moteur quand cela est nécessai- re, grâce à un alterno-démarreur. Il en résulte que lorsqu'un véhicule de ce type est au point mort, le moteur à combustion interne étant arrêté, la climatisation se trouve aussi à l'arrêt. L'arrêt du moteur à combustion interne a pour conséquence l'arrêt du compresseur, d'où une sensation d'inconfort pour le ou les passagers du véhicule.  In the context of anti-pollution standards, it is envisaged to make motor vehicles which stop the internal combustion engine when the vehicle is in neutral and then restart the engine when necessary, thanks to a alternator-starter. As a result, when a vehicle of this type is in neutral, with the internal combustion engine stopped, the air conditioning is also at a standstill. Stopping the internal combustion engine causes the compressor to stop, resulting in a feeling of discomfort for the passenger or passengers of the vehicle.

L'invention a notamment pour but de surmonter les inconvénients précités en proposant des moyens pour accumuler du froid (en cédant par conséquent de la chaleur) quand le moteur du véhicule fonctionne et pour restituer ce froid dans l'habitacle quand le moteur est à l'arrêt.  The object of the invention is in particular to overcome the aforementioned drawbacks by proposing means for accumulating cold (thereby yielding heat) when the engine of the vehicle is running and for restoring this coldness in the passenger compartment when the engine is running. 'stop.

L'invention vise notamment un dispositif du genre défini en introduction, et prévoit qu'il comprend une seconde boucle fermée dans laquelle un second fluide caloporteur peut circuler de manière à recevoir du froid du premier fluide caloporteur dans l'évaporateur et le restituer au flux d'air dans l'évaporateur, en fonction de la puissance frigorifique produite par la première boucle et des besoins du traitement du flux d'air.  The invention aims in particular at a device of the kind defined in the introduction, and provides that it comprises a second closed loop in which a second heat transfer fluid can circulate so as to receive cold from the first heat transfer fluid in the evaporator and return it to the flow. in the evaporator, depending on the cooling capacity produced by the first loop and the needs of the airflow treatment.

Des caractéristiques optionnelles de l'invention, complémentaires ou de substitution, sont énoncées ci-après: - La seconde boucle fermée contient une pompe électrique pour la circulation du second fluide caloporteur.  Optional features of the invention, complementary or substitution, are set out below: The second closed loop contains an electric pump for the circulation of the second heat transfer fluid.

- La seconde boucle fermée contient des moyens pour accumuler du froid lorsque la puissance frigorifique produite par la première, boucle excède les besoins du traitement et pour restituer du froid lorsque ladite puissance est insuffisante.  - The second closed loop contains means for accumulating cold when the cooling capacity produced by the first loop exceeds the processing requirements and to restore cold when said power is insufficient.

2861163 3 - Une électrovanne est interposée entre la pompe et les moyens d'accumulation pour favoriser la conservation du froid dans ces derniers.  2861163 3 - A solenoid valve is interposed between the pump and the accumulation means to promote the conservation of cold in them.

Les caractéristiques et avantages de l'invention sont exposés plus en détail dans la description ci-après, avec référence au dessin annexé sur lequel la figure unique est un schéma de circuit d'un dispositif selon l'invention pour la climatisation de l'habitacle d'un véhicule automobile.  The features and advantages of the invention are described in more detail in the description below, with reference to the accompanying drawing in which the single figure is a circuit diagram of a device according to the invention for the air conditioning of the passenger compartment. of a motor vehicle.

Le dispositif illustré comprend de manière classique une boucle de fluide réfrigérant BF dans laquelle le fluide traverse successivement un compresseur BF1, un condenseur BF2, un réservoir ou "bouteille" BF3, un détendeur BF4 et un évaporateur BF5 avant de retourner vers le compresseur. Un flux d'air représenté par la flèche F traverse l'évaporateur BF5 pour être refroidi avant d'être introduit dans l'habitacle du véhicule.  The illustrated device conventionally comprises a refrigerant fluid loop BF in which the fluid passes successively through a compressor BF1, a condenser BF2, a tank or "bottle" BF3, a pressure reducer BF4 and a vaporizer BF5 before returning to the compressor. An air flow represented by the arrow F passes through the evaporator BF5 to be cooled before being introduced into the passenger compartment of the vehicle.

Selon l'invention, l'évaporateur BF5 fait également partie d'une boucle BS qui contient en outre une pompe électrique de circulation BS1 et un réservoir d'accumulation de fluide BS2. La boucle BS contient un fluide caloporteur qui est capable d'échanger de la chaleur avec le fluide réfrigérant et avec le flux d'air F dans l'évaporateur BF5.  According to the invention, the evaporator BF5 is also part of a loop BS which further contains an electric circulation pump BS1 and a fluid storage tank BS2. The loop BS contains a coolant which is able to exchange heat with the coolant and with the air flow F in the evaporator BF5.

Pendant la période initiale de fonctionnement du dispositif, la pompe BS1 est arrêtée et le fluide ne circule pas dans la boucle BS. Seule la petite quantité de ce fluide contenue dans l'évaporateur BF5 est refroidie par le fluide réfrigé- rant, permettant une mise en température rapide de l'évapora- teur. Dès que la température voulue pour l'évaporateur ou pour le flux d'air F est atteinte, la pompe BS1 est mise en marche, de sorte que du fluide refroidi circule dans la boucle. BS, conduisant à une accumulation de froid dans le réservoir BS2. En cas d'arrêt du moteur et par conséquent du compresseur BF1, la circulation du fluide dans la boucle BS se poursuit sous l'action de la pompe BS1, et ce fluide prend 2861163 4 le relais du fluide réfrigérant pour refroidir le flux d'air F en prélevant du froid du réservoir BS2.  During the initial period of operation of the device, the pump BS1 is stopped and the fluid does not circulate in the loop BS. Only the small amount of this fluid contained in the evaporator BF5 is cooled by the refrigerant fluid, allowing rapid heating of the evaporator. As soon as the desired temperature for the evaporator or for the air flow F is reached, the pump BS1 is turned on, so that cooled fluid circulates in the loop. BS, leading to a build-up of cold in the BS2 tank. In case of stopping of the engine and consequently of the compressor BF1, the circulation of the fluid in the loop BS continues under the action of the pump BS1, and this fluid takes the refrigerant relay 2861163 4 to cool the flow of air F by removing cold from tank BS2.

Avantageusement, une électrovanne BS3 interposée entre la pompe BS1 et le réservoir BS2 permet d'isoler celui-ci lorsque la pompe est arrêtée, favorisant ainsi la conservation du froid pour une restitution ultérieure.  Advantageously, a solenoid valve BS3 interposed between the pump BS1 and the reservoir BS2 isolates it when the pump is stopped, thereby promoting the conservation of cold for a subsequent return.

La quantité totale de fluide caloporteur dans la boucle BS 10 dépend de l'énergie thermique (froid) que l'on cherche à transférer au flux d'air à envoyer dans l'habitacle.  The total amount of heat transfer fluid in the loop BS 10 depends on the thermal energy (cold) that is to be transferred to the flow of air to be sent into the passenger compartment.

Claims (4)

Revendicationsclaims 1. Dispositif pour régler la température d'un flux d'air (F), notamment pour la climatisation de l'habitacle d'un véhicule, comprenant une première boucle fermée (BF) contenant un évaporateur (BF5) propre à être traversé par ledit flux d'air (F) et dans laquelle un premier fluide caloporteur peut circuler de manière à céder du froid audit flux d'air dans l'évaporateur (BF5), caractérisé en ce qu'il comprend une seconde boucle fermée (BS) dans laquelle un second fluide caloporteur peut circuler de manière à recevoir du froid du premier fluide caloporteur dans l'évaporateur et le restituer au flux d'air (F) dans l'évaporateur, en fonction de la puissance frigorifique produite par la première boucle et des besoins du traitement du flux d'air.  Device for regulating the temperature of an air flow (F), especially for the air conditioning of the passenger compartment of a vehicle, comprising a first closed loop (BF) containing an evaporator (BF5) capable of being traversed by said air flow (F) and in which a first heat-transfer fluid can circulate so as to give coldness to said air flow in the evaporator (BF5), characterized in that it comprises a second closed loop (BS) in which a second heat transfer fluid can flow so as to receive cold from the first coolant in the evaporator and return it to the air flow (F) in the evaporator, depending on the cooling capacity produced by the first loop and the needs of the treatment of the air flow. 2. Dispositif selon la revendication 1, dans lequel la seconde boucle fermée (BS) contient une pompe électrique (BS1) pour la circulation du second fluide caloporteur.  2. Device according to claim 1, wherein the second closed loop (BS) contains an electric pump (BS1) for the circulation of the second heat transfer fluid. 3. Dispositif selon l'une des revendications 1 et 2, dans lequel la seconde boucle fermée (BS) contient des moyens (BS2) pour accumuler du froid lorsque la puissance frigorifique produite par la première boucle excède les besoins du traitement et pour restituer du froid lorsque ladite puissance est insuffisante.  3. Device according to one of claims 1 and 2, wherein the second closed loop (BS) contains means (BS2) for accumulating cold when the cooling capacity produced by the first loop exceeds the processing requirements and to restore the cold when said power is insufficient. 4. Dispositif selon la revendication 3, dans lequel une électrovanne (BS3) est interposée entre la pompe et les moyens d'accumulation (BS2) pour favoriser la conservation du froid dans ces derniers.  4. Device according to claim 3, wherein a solenoid valve (BS3) is interposed between the pump and the accumulation means (BS2) to promote the conservation of cold in the latter.
FR0312292A 2003-10-21 2003-10-21 COLD ACCUMULATION DEVICE FOR EVAPORATOR Expired - Fee Related FR2861163B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR0312292A FR2861163B1 (en) 2003-10-21 2003-10-21 COLD ACCUMULATION DEVICE FOR EVAPORATOR
EP04805236A EP1682368A1 (en) 2003-10-21 2004-10-19 Device for storing cold for an evaporator
US10/575,373 US20070119197A1 (en) 2003-10-21 2004-10-19 Device for storing cold for an evaporator
PCT/FR2004/002672 WO2005039903A1 (en) 2003-10-21 2004-10-19 Device for storing cold for an evaporator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0312292A FR2861163B1 (en) 2003-10-21 2003-10-21 COLD ACCUMULATION DEVICE FOR EVAPORATOR

Publications (2)

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FR2861163A1 true FR2861163A1 (en) 2005-04-22
FR2861163B1 FR2861163B1 (en) 2006-11-24

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FR0312292A Expired - Fee Related FR2861163B1 (en) 2003-10-21 2003-10-21 COLD ACCUMULATION DEVICE FOR EVAPORATOR

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US (1) US20070119197A1 (en)
EP (1) EP1682368A1 (en)
FR (1) FR2861163B1 (en)
WO (1) WO2005039903A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2136161A1 (en) 2008-06-19 2009-12-23 Valeo Systemes Thermiques Heating, ventilation and/or air-conditioning installation with cold storage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2697662T3 (en) 2011-04-13 2018-07-30 Codexis Inc BIOCATALYTIC PROCEDURE FOR PREPARING ESLICARBAZEPIN AND ANALOGUES THEREOF
FR3005722B1 (en) 2013-05-16 2015-04-24 Valeo Systemes Thermiques SELF-DEGIVING AIR CONDITIONING SYSTEM

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US5735133A (en) * 1996-04-12 1998-04-07 Modine Manufacturing Co. Vehicular cooling system with thermal storage
US6112543A (en) * 1998-08-27 2000-09-05 Behr Gmbh & Co. Device for cooling an interior compartment of a motor vehicle
US6260376B1 (en) * 1998-12-23 2001-07-17 Valeo Klimasysteme Gmbh Air conditioning installation for a motor vehicle with a cold reservoir
WO2002103267A1 (en) * 2001-06-18 2002-12-27 Bergstrom, Inc. Modular low-pressure delivery vehicle air conditioning system having an in-cab cool box
US20030159455A1 (en) * 2002-02-28 2003-08-28 Yasukazu Aikawa Vehicle air conditioner with cold storage unit

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US5904052A (en) * 1996-09-02 1999-05-18 Denso Corporation Brine type air conditioning apparatus
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735133A (en) * 1996-04-12 1998-04-07 Modine Manufacturing Co. Vehicular cooling system with thermal storage
US6112543A (en) * 1998-08-27 2000-09-05 Behr Gmbh & Co. Device for cooling an interior compartment of a motor vehicle
US6260376B1 (en) * 1998-12-23 2001-07-17 Valeo Klimasysteme Gmbh Air conditioning installation for a motor vehicle with a cold reservoir
WO2002103267A1 (en) * 2001-06-18 2002-12-27 Bergstrom, Inc. Modular low-pressure delivery vehicle air conditioning system having an in-cab cool box
US20030159455A1 (en) * 2002-02-28 2003-08-28 Yasukazu Aikawa Vehicle air conditioner with cold storage unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2136161A1 (en) 2008-06-19 2009-12-23 Valeo Systemes Thermiques Heating, ventilation and/or air-conditioning installation with cold storage

Also Published As

Publication number Publication date
FR2861163B1 (en) 2006-11-24
EP1682368A1 (en) 2006-07-26
US20070119197A1 (en) 2007-05-31
WO2005039903A1 (en) 2005-05-06

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