EP1532010A1 - Climatisation arret et demarrage - Google Patents

Climatisation arret et demarrage

Info

Publication number
EP1532010A1
EP1532010A1 EP03760562A EP03760562A EP1532010A1 EP 1532010 A1 EP1532010 A1 EP 1532010A1 EP 03760562 A EP03760562 A EP 03760562A EP 03760562 A EP03760562 A EP 03760562A EP 1532010 A1 EP1532010 A1 EP 1532010A1
Authority
EP
European Patent Office
Prior art keywords
short
evaporator
term cold
conditioning system
air conditioning
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.)
Withdrawn
Application number
EP03760562A
Other languages
German (de)
English (en)
Inventor
Noureddine Khelifa
Oliver Horn
Alexander Kolb
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.)
Webasto SE
Original Assignee
Webasto SE
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 Webasto SE filed Critical Webasto SE
Publication of EP1532010A1 publication Critical patent/EP1532010A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00492—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
    • B60H1/323—Cooling devices using compression characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

Definitions

  • the invention relates to an air conditioning system for a motor vehicle whose drive motor is switched off, for example when the motor vehicle is at a short standstill, in order to save energy, with a compression refrigeration circuit which comprises at least one condenser, an evaporator and a compressor which can be driven by the drive motor, and with a short-term cold store In particular, it is intended to be discharged when the drive motor is switched off due to a brief standstill of the motor vehicle. Furthermore, the invention relates to a method for cooling the interior of a motor vehicle, the drive motor of which is switched off, for example, when the motor vehicle is at a short standstill in order to save energy.
  • An air conditioning system equipped with a compression refrigeration circuit usually has a compressor which is driven by the drive motor of the motor vehicle.
  • the compressor of the air conditioning system also turns off when the drive motor is switched off. drive is set.
  • the temperature of the evaporator which is operated as a cool heat exchanger, rises, so that when the drive motor is switched off, warmer air is blown into the interior of the motor vehicle, which impairs comfort.
  • the invention is based on the object of enabling the short-term cold storage device to be loaded quickly and effectively with a high degree of efficiency.
  • the air conditioning system according to the invention builds on the generic state of the art in that refrigerant is evaporated in the short-term cold store in order to charge the short-term cold store.
  • This solution enables rapid charging of the short-term cold store controlled by the refrigerant with a high degree of efficiency, with high energy densities being able to be achieved.
  • the evaporator and the short-term cold storage device are assigned a common expansion element.
  • the shared expansion device can be assigned to the evaporator and / or the short-term cold store, for example by valve devices.
  • the evaporator and the short-term cold storage are arranged in the form of a series connection.
  • the short-term cold store is arranged upstream of the evaporator in relation to the flow of refrigerant.
  • this solution enables water to be used as a storage medium for the short-term cold storage, which can be advantageous due to the low phase transition temperature and enthalpy of water.
  • solutions are also possible in which that the evaporator and the temporary cold storage are arranged in the form of a parallel connection. Without being limited to this, this solution can be provided in particular in combination with two separate expansion devices and cases in which the short-term cold store is arranged at a spatial distance from the evaporator.
  • a valve is provided with which the refrigerant flow through the short-term cold store can be varied.
  • the valve can be, for example, a 2/2 solenoid valve. Although it is sufficient in many cases to switch the refrigerant supply to the short-term cold storage on or off, embodiments are also possible in which the refrigerant flow is varied with regard to the flow rate and / or speed.
  • the short-term cold storage uses a storage medium with a low freezing point and a high energy density.
  • the short-term cold storage uses water as the storage medium. Additionally or alternatively, it can be provided that the short-term cold store uses salts and / or paraffins as the storage medium.
  • the evaporator and / or the short-term cold store can be operated as a cooling air heat exchanger.
  • the evaporator and / or the short-term cold store can have, for example, a lamella-like structure.
  • the evaporator and the short-term cold store are arranged one behind the other in relation to the direction of flow of air to be cooled.
  • Embodiments are considered in which the short-term cold store is arranged in front of the evaporator in relation to the air flow direction, as well as embodiments in which the short-term cold store is arranged in relation to the air flow behind the evaporator.
  • the air conditioning system according to the invention can advantageously be further developed in that a flap device is provided which has a first working position in which air to be cooled flows exclusively through the evaporator and which has a second working position in which the air to be cooled is both through the evaporator and flows through the short-term cold storage.
  • the first working position can in particular be provided for charging the short-term cold store.
  • the second working position enables two operating modes. In the first mode of operation, the short-term cold store is discharged, although the compressor is driven by the drive motor of the motor vehicle is driven. This means that a particularly high cooling capacity can be made available at short notice.
  • the short-term cold store is discharged while the compressor is switched off.
  • the air which is not sufficiently cooled by the evaporator is brought to a sufficiently low temperature by the short-term cold store.
  • At least the evaporator and the short-term cold storage device can be arranged in a common housing. If necessary, other components of the compression cold circuit and / or the associated control or regulating device can of course also be accommodated in the common housing.
  • the short-term cold storage device is arranged outside of an air conditioning unit housing.
  • This solution is particularly suitable if the short-term cold storage is to be arranged at a distance from the air conditioning unit housing. If necessary, a separate housing can be provided for the short-term cold storage.
  • the evaporator and the short-term cold storage device are assigned a common blower.
  • This solution is particularly suitable if the evaporator and the short-term cold storage are arranged one behind the other with respect to the air flow and both components are operated as a cooling air heat exchanger.
  • a separate blower is assigned to the short-term cold store. This embodiment is particularly useful if the short-term cold storage device is spaced apart from the evaporator.
  • the air conditioning system according to the invention builds on the generic state of the art in that the evaporator and the short-term cold storage are arranged in the form of a series circuit, the short-term cold storage being arranged downstream of the refrigerant flow immediately adjacent to the evaporator.
  • This embodiment allows in particular an effective use of the residual cold in the refrigerant after the evaporation.
  • the refinements and developments explained in connection with the first embodiment of the air conditioning system according to the invention can for the most part also be provided in the second embodiment of the air conditioning system according to the invention, so that these combinations of features are also disclosed herewith.
  • the method according to the invention for cooling the interior of a motor vehicle, the drive motor of which is switched off, for example, in order to save energy when the motor vehicle is at a short standstill comprises the following steps:
  • Short-term cold storage using a compressor driven by the drive motor, and b) at least partially discharging the short-term cold store for cooling the interior when the drive motor is switched off due to a brief standstill of the motor vehicle.
  • step b) is operated as a cow air heat exchanger.
  • the short-term cold store in step b) is operated as a cow air heat exchanger.
  • Figure la is a schematic representation of a first embodiment of the air conditioning system according to the invention.
  • Figure lb a first possible arrangement of blower, evaporator and short-term cold storage for the first
  • Figure 1c shows a second possible arrangement of blower, evaporator and short-term cold storage for the first embodiment of the air conditioning system according to the invention
  • Figure 2a is a schematic representation of a second embodiment of the air conditioning system according to the invention.
  • FIG. 2b shows a first possible arrangement of blower, evaporator and short-term cold store for the second embodiment of the air conditioning system according to the invention
  • FIG. 2c shows a second possible arrangement of blower, evaporator and short-term cold store for the second embodiment of the air conditioning system according to the invention
  • Figure 3a is a schematic representation of a third embodiment of the air conditioning system according to the invention.
  • Figure 3b shows a possible arrangement of blower, evaporator and short-term cold storage for the third embodiment of the air conditioning system according to the invention
  • Figure 3c is a schematic representation of a modified third embodiment of the inventive
  • FIG. 4a is a schematic representation of a fourth embodiment of the air conditioning system according to the invention.
  • FIG. 4b shows a possible arrangement of blower, evaporator and short-term cold store for the fourth embodiment of the air conditioning system according to the invention
  • Figure 5 shows the interaction of blower, evaporator and short-term cold storage with a flap device.
  • FIG. la shows a schematic representation of a first embodiment of the air conditioning system according to the invention.
  • the compression cold circuit shown comprises a compressor 14 driven by the drive motor of the motor vehicle, to which a condenser 16 is connected in relation to the direction of flow of the refrigerant.
  • Refrigerant emerging from the condenser 16 is fed to a first expansion element, which is connected upstream of a series circuit comprising a short-term cold store 12 and an evaporator 10.
  • refrigerant evaporation thus takes place in the short-term cold store 12, as a result of which the short-term cold store 12 is loaded.
  • FIG. 1b shows a first possible arrangement of blower 24, evaporator 10 and short-term cold store 12 for the first embodiment of the air conditioning system according to the invention.
  • the refrigerant is supplied to the temporary cold storage 12 via the first expansion element 18 and then passed on to the evaporator 10.
  • the short-term cold storage 12 is based on the direction indicated by the arrow of the air flow generated by the fan 24 is arranged behind the evaporator 10.
  • Figure lc shows a second possible arrangement of fan 24, evaporator 10 and short-term cold storage 12 for the first embodiment of the air conditioning system according to the invention.
  • the refrigerant is supplied to the temporary cold storage 12 via the first expansion element 18 and then passed on to the evaporator 10.
  • the temporary cold storage 12 is arranged in front of the evaporator 10 in relation to the direction indicated by the arrow of the air flow generated by the fan 24.
  • FIG. 2a shows a schematic representation of a second embodiment of the air conditioning system according to the invention.
  • the compression refrigeration circuit shown comprises a compressor 14 driven by the drive motor of the motor vehicle, which is followed by a condenser 16 with respect to the direction of the refrigerant flow.
  • Refrigerant emerging from the condenser 16 is fed via a second expansion element 20 to a parallel circuit comprising an evaporator 10 and a short-term cold storage device 12.
  • a valve 22 is provided in front of the short-term cold store 12, with which the refrigerant flow through the short-term cold store 12 can be varied. When the valve 22 is open, refrigerant evaporation takes place in the short-term cold store 12, as a result of which the short-term refrigerant store 12 is charged.
  • FIG. 2b shows a first possible arrangement of blower 24, evaporator 10 and short-term cold storage 12 for the second embodiment of the air conditioning system according to the invention.
  • the valve 22 When the valve 22 is open, the evaporator 10 and the temporary cold storage 12 are supplied with refrigerant in parallel via the second expansion element 20.
  • the short-term cold store 12 is arranged behind the evaporator 10 in relation to the direction of the air flow generated by the blower 24, as indicated by the arrow.
  • FIG. 2c shows a second possible arrangement of blower 24, evaporator 10 and short-term cold store 12 for the second embodiment of the air conditioning system according to the invention.
  • the valve 22 When the valve 22 is open, the evaporator 10 and the temporary cold storage 12 are supplied with refrigerant in parallel via the second expansion element 20.
  • the short-term cold store 12 is arranged in front of the evaporator 10 in relation to the direction of the air flow generated by the blower 24, as indicated by the arrow.
  • FIG. 3a shows a schematic representation of a third embodiment of the air conditioning system according to the invention.
  • the compression cold circuit shown comprises a compressor driven by the drive motor of the motor vehicle, to which a condenser 16 is connected in relation to the refrigerant flow direction.
  • Refrigerant emerging from the condenser 16 is fed to a parallel circuit comprising an evaporator 10 and a short-term cold storage 12.
  • a short expansion element 18 is assigned to the short-term cold store 12
  • a second expansion element 20 is assigned to the evaporator 10.
  • a valve 22 is provided with which the flow of refrigerant through the short-term cold store 12 can be riied.
  • the third embodiment of the air conditioning system according to the invention shown in FIG. 3a is particularly advantageous if the short-term cold store 12 is arranged spatially spaced from the evaporator 10 in order to be assigned, for example, to the rear area of a vehicle interior.
  • FIG. 3b shows a possible arrangement of blower 24, evaporator 10 and short-term cold store 12 for the third embodiment of the air conditioning system according to the invention.
  • the short-term cold store 12 is supplied with refrigerant via the first expansion element 18, while the evaporator 10 is simultaneously supplied with refrigerant via the second expansion element 20.
  • the short-term cold store 12 is arranged behind the evaporator 10 in relation to the direction of the air flow generated by the blower 24, as indicated by the arrow.
  • This solution is particularly suitable if the short-term cold storage 12 is arranged spatially adjacent to the evaporator 10.
  • a separate blower (not shown) can optionally be assigned to the short-term cold store 12.
  • FIG. 3c shows a schematic representation of a modified third embodiment of the air conditioning system according to the invention.
  • a valve 34 is provided in front of the second expansion element 20 in order to vary the flow of refrigerant through the evaporator 10. In this way, it is possible to continue charging the short-term cold store 12 with the valve 34 closed. This can make sense in the event that no air conditioning of the interior is currently required is and thus an overflow of refrigerant in the evaporator 10 is unnecessary.
  • refrigerant evaporation takes place in the short-term cold store 12 in order to charge the short-term cold store 12. Since very low temperatures can be generated in the short-term cold storage 12 in this way, it is possible to use storage media with a low phase transition temperature, for example water, which is considered to be particularly advantageous.
  • FIG. 4a shows a schematic representation of a fourth embodiment of the air conditioning system according to the invention.
  • the compression cold circuit shown comprised a compressor 14 driven by the drive motor of the motor vehicle, to which a condenser 16 is connected downstream in relation to the direction of the refrigerant flow.
  • Refrigerant emerging from the condenser 16 is fed to an evaporator 10 via a second expansion element 20.
  • Refrigerant emerging from the evaporator 10 is then fed to a short-term cold store 12. It is therefore a series connection of the evaporator 10 and the short-term cold storage 12.
  • This solution is particularly suitable for effectively using the residual cold in the refrigerant after the evaporation process.
  • the short-term cold storage 12 is arranged directly adjacent to the evaporator 10.
  • Figure 4b shows a possible arrangement of blower 24, evaporator 10 and short-term cold storage 12 for the fourth embodiment of the air conditioning system according to the invention.
  • refrigerant is supplied via the second expansion element 20 first supplied to the evaporator 10 and then to the temporary cold storage 12.
  • the short-term cold store 12 is arranged behind the evaporator 10 in relation to the direction of the air flow generated by the fan 24, as indicated by the arrow.
  • FIG. 5 shows the interaction of fan 24, evaporator 10 and short-term cold storage 12 with a flap device.
  • An air duct 26 is provided in which the evaporator 10 is arranged.
  • the air duct 26 is divided into an upper and a lower area by a separating device 28, the short-term cold storage 12 being arranged in the lower area.
  • a fan 24 creates an air flow in the direction illustrated by the arrow.
  • the flap device comprises a flap 32 which can be pivoted about an axis 30 and which can be brought into a first and a second working position. In the first working position shown, the flap 32 is folded down relative to the illustration in FIG. 5, so that the air to be cooled only flows through the evaporator 10.
  • the first working position can be provided in particular for charging the short-term cold storage 12.
  • the flap 32 In the second working position, not shown, the flap 32 is in its upward folded position, based on the illustration in FIG. 5, so that the air to be cooled flows both through the evaporator 10 and through the short-term cold store 12.
  • the second working position is particularly intended to allow adequate cooling of the vehicle interior when the motor vehicle is at a short standstill and the drive motor is switched off.
  • the second working position it is also possible for the second working position to be assumed even when the compressor is running (not shown in FIG. 5) in order to generate a particularly high cooling capacity in the short term.

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

Abstract

L'invention concerne un système de climatisation d'un véhicule automobile dont le moteur de commande est mis à l'arrêt aux fins d'économie d'énergie, par exemple, lorsque le véhicule s'arrête un court laps de temps. Ce système de climatisation comprend un circuit de refroidissement par compression qui présente au moins un condenseur (16), un évaporateur (10) et un compresseur (14) entraîné par le moteur de commande. Ce système comprend également un réservoir d'agent de refroidissement momentané (12) qui est notamment destiné à être vidé lorsque le moteur de commande est mis à l'arrêt parce que le véhicule s'arrête un court moment. Notamment pour permettre un rapide chargement du réservoir d'agent de refroidissement momentané (12), selon une première idée fondamentale de l'invention, l'agent de refroidissement est évaporé dans le réservoir d'agent de refroidissement momentané (12) afin de charger le réservoir d'agent de refroidissement momentané (12). Selon une deuxième idée fondamentale de l'invention, l'évaporateur (10) et le réservoir d'agent de refroidissement momentané (12) sont montés en série, le réservoir d'agent de refroidissement momentané (12) étant immédiatement adjacent à l'évaporateur (10) en aval par rapport à l'écoulement de l'agent de refroidissement. L'invention concerne également un procédé de refroidissement de l'habitacle d'un véhicule automobile dont le moteur de commande est mis à l'arrêt aux fins d'économie d'énergie, par exemple, lorsque le véhicule fait un arrêt de courte durée.
EP03760562A 2002-06-20 2003-06-18 Climatisation arret et demarrage Withdrawn EP1532010A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10227585A DE10227585A1 (de) 2002-06-20 2002-06-20 Stop-And-Go-Klimatisierung
DE10227585 2002-06-20
PCT/DE2003/002029 WO2004000588A1 (fr) 2002-06-20 2003-06-18 Climatisation arret et demarrage

Publications (1)

Publication Number Publication Date
EP1532010A1 true EP1532010A1 (fr) 2005-05-25

Family

ID=29723318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03760562A Withdrawn EP1532010A1 (fr) 2002-06-20 2003-06-18 Climatisation arret et demarrage

Country Status (4)

Country Link
EP (1) EP1532010A1 (fr)
AU (1) AU2003250264A1 (fr)
DE (2) DE10227585A1 (fr)
WO (1) WO2004000588A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10318655C5 (de) * 2003-04-24 2008-07-10 Webasto Ag Klimatisierungssystem für ein Kraftfahrzeug und Verfahren zum Betreiben desselben
DE102004002715A1 (de) * 2004-01-19 2005-09-15 Webasto Ag Klimaanlage für ein Kraftfahrzeug
DE102004019607A1 (de) 2004-04-22 2006-01-12 Webasto Ag Heiz- und Klimatisierungssystem für ein Kraftfahrzeug
DE102006028017A1 (de) 2006-02-10 2007-08-16 Behr Gmbh & Co. Kg Wärmeübertrager, insbesondere mit Kältespeicher
DE102013108700A1 (de) 2013-08-12 2015-02-12 Daimler Ag Klimaanlage mit betriebsabhängigem Aufbau eines thermischen Speichers
DE102013221918A1 (de) 2013-10-29 2015-04-30 Volkswagen Aktiengesellschaft Klimatisierungsvorrichtung eines Kraftfahrzeugs mit einem Kältemittelkreislauf und Verfahren zum Betreiben des Kältemittelkreislaufs
CN110030781B (zh) * 2019-04-16 2024-04-05 中国国家铁路集团有限公司 基于整体式蓄冷板的保温集装箱及其充冷供冷方法

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DE3704182A1 (de) * 1987-02-11 1988-08-25 Forschungszentrum Fuer Kaeltet Kuehlanlage
JPH01153321A (ja) * 1987-12-10 1989-06-15 Suzuki Motor Co Ltd 車両用蓄熱空調装置
JPH10157449A (ja) * 1996-11-28 1998-06-16 Denso Corp 冷凍サイクル装置
JP4174929B2 (ja) * 1998-10-23 2008-11-05 株式会社デンソー 車両用空調装置
DE10124757A1 (de) * 2000-05-26 2001-11-29 Denso Corp Fahrzeugklimaanlage mit Kältespeicher
DE20115273U1 (de) * 2001-01-05 2002-05-08 Behr Gmbh & Co Klimaanlage für ein Kraftfahrzeug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004000588A1 *

Also Published As

Publication number Publication date
DE10227585A1 (de) 2004-01-15
WO2004000588A1 (fr) 2003-12-31
AU2003250264A1 (en) 2004-01-06
DE10393337D2 (de) 2005-06-02

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