DE19909286A1 - Heating or air conditioning system for motor vehicle has cooling and refrigeration circuits, heat exchanger for transferring heat, heating arrangement for separate heating of coolant - Google Patents

Heating or air conditioning system for motor vehicle has cooling and refrigeration circuits, heat exchanger for transferring heat, heating arrangement for separate heating of coolant

Info

Publication number
DE19909286A1
DE19909286A1 DE1999109286 DE19909286A DE19909286A1 DE 19909286 A1 DE19909286 A1 DE 19909286A1 DE 1999109286 DE1999109286 DE 1999109286 DE 19909286 A DE19909286 A DE 19909286A DE 19909286 A1 DE19909286 A1 DE 19909286A1
Authority
DE
Germany
Prior art keywords
heating
coolant
heat exchanger
liquid
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Withdrawn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
DE1999109286
Other languages
German (de)
Inventor
Bernd Dienhart
Sascha Lindauer
Markus Schmid
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Priority to DE1999109286 priority Critical patent/DE19909286A1/en
Publication of DE19909286A1 publication Critical patent/DE19909286A1/en
Withdrawn legal-status Critical Current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
    • B60H1/00321—Heat exchangers for air-conditioning devices
    • B60H1/00342—Heat exchangers for air-conditioning devices of the liquid-liquid type
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • 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
    • F01P2060/18—Heater

Landscapes

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

Abstract

The system has a cooling circuit consisting of a compressor (14), a condenser (16), an expansion element (18) and an evaporator (20), an engine coolant circuit (24) and a liquid/liquid heat exchanger (22) for transferring heat from the coolant in the refrigeration circuit to the refrigerant in the refrigeration circuit. For transferring heat the heat exchanger operates as an evaporator in the refrigeration circuit and the refrigeration circuit acts as a heat pump. A heating arrangement is provided for separate heating of the coolant.

Description

Die Erfindung betrifft ein Heizungs- oder Klimatisierungssystem für ein Kraftfahrzeug gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a heating or air conditioning system for a Motor vehicle according to the preamble of claim 1.

Ein derartiges Klimatisierungssystem ist aus der DE 36 35 353 bekannt, bei der die Klimaanlage auch als Wärmepumpe betrieben werden kann, wobei die Energie, die dem Kältekreislauf zugeführt werden muß, aus der Verlustenergie des Kraftfahrzeuges, also aus der Wärmeenergie des heißen Kühlmittels, die ansonsten ungenutzt über den Kühler des Kraftfahrzeuges an die Umgebung abgeführt werden würde, stammt. Dazu ist ein Flüssig/Flüssig-Wärmetauscher zwischen dem Kältekreis und dem Motorkühlkreislauf vorgesehen, der im Heizbetrieb der Klimaanlage als Verdampfer für das Kältemittel dient, wobei die Energie zur Verdampfung des Kältemittels dem heißen Motorkühlmittel entnommen wird, so daß durch die Ausnutzung der Kühlmittelenergie das Kältemittel verdampft.Such an air conditioning system is known from DE 36 35 353, at the air conditioning can also be operated as a heat pump, whereby the energy that must be supplied to the refrigeration cycle from the Loss energy of the motor vehicle, i.e. from the thermal energy of the hot Coolant that is otherwise unused via the radiator of the motor vehicle would be dissipated to the environment. This is a Liquid / liquid heat exchanger between the refrigeration circuit and the Engine cooling circuit provided, which in the heating operation of the air conditioning system Evaporator for the refrigerant is used, the energy for evaporation of the refrigerant is removed from the hot engine coolant, so that by the use of the coolant energy evaporates the refrigerant.

Eine derartige Klimaanlage, die auch als Wärmepumpe betrieben werden kann und zur Aufheizung der dem Fahrgastraum zuzuführenden Luft dient, hat die Vorteile, daß kürzere Leitungen im Kühlkreislauf möglich sind, daß eine kürzere Aufheizzeit des Motors erzielbar ist, wodurch ein besserer Wirkungsgrad und ein geringerer Schadstoffausstoß erreicht werden kann, und es ist ein früherer Heizbetrieb aufgrund des Wärmepumpeneffektes möglich. Darüber hinaus können Taktventile für die Kühlmittelflußregelung im Heizkreislauf entfallen und es ist eine Regelung der Motortemperatur über den Kältekreislauf möglich.Such an air conditioning system, which is also operated as a heat pump can and serves to heat the air to be supplied to the passenger compartment, has the advantages that shorter lines in the cooling circuit are possible that a shorter engine warm-up time can be achieved, resulting in a better one Efficiency and lower pollutant emissions can be achieved and it is an earlier heating operation due to the heat pump effect possible. In addition, timing valves can be used for coolant flow control  in the heating circuit and there is a regulation of the engine temperature possible via the refrigeration cycle.

Ausgehend von diesem Stand der Technik ist es Aufgabe der Erfindung, das bekannte Heizungs- oder Klimatisierungssystem zu verbessern.Based on this prior art, it is an object of the invention that to improve known heating or air conditioning system.

Diese Aufgabe wird gelöst durch ein System mit den Merkmalen des Anspruchs 1.This task is solved by a system with the characteristics of Claim 1.

Erfindungsgemäß sind Heizmittel vorgesehen zum separaten Aufheizen des Kühlmittels. Dadurch wird eine schnellere Aufheizung des Kühlmittels erreicht, wodurch der Motor schneller aufheizen kann und somit ein besserer Wirkungsgrad und ein geringerer Schadstoffausstoß erreicht werden kann. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Ansprüche.According to the invention, heating means are provided for separately heating the Coolant. This will cool the coolant faster reached, which allows the engine to heat up faster and thus a better one Efficiency and lower pollutant emissions can be achieved. Advantageous embodiments of the invention are the subject of dependent claims.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispieles unter Bezugnahme auf die Zeichnung im einzelnen erläutert. In der Zeichnung zeigen:The invention is described below using an exemplary embodiment Reference to the drawing explained in detail. In the drawing demonstrate:

Fig. 1 ein Blockschaltbild eines erfindungsgemäßen Heizungs- oder Klimatisierungssystems; Fig. 1 is a block diagram of a heating or air conditioning system according to the invention;

Fig. 2 und 3 ein Ausführungsbeispiel eines Flüssig/Flüssig- Wärmetauschers in radialer und axialer Ansicht. Fig. 2 and 3 an embodiment of a liquid / liquid heat exchanger in the radial and axial view.

Ein erfindungsgemäßes Heizungs- oder Klimatisierungssystem 10 für ein Kraftfahrzeug weist einen Kältekreis 12, bestehend aus einem Verdichter 14, einem Kondensator 16, einem Expansionsorgan 18 und einem Verdampfer 20, auf. Der Kondensator 16 kann auch zur Aufheizung der einem Fahrgastraum des Kraftfahrzeugs zuzuführenden Luft dienen. Der Verdampfer 20 ist als Flüssig/Flüssig-Wärmetauscher 22 ausgebildet. A heating or air conditioning system 10 according to the invention for a motor vehicle has a refrigeration circuit 12 , consisting of a compressor 14 , a condenser 16 , an expansion element 18 and an evaporator 20 . The condenser 16 can also serve to heat the air to be supplied to a passenger compartment of the motor vehicle. The evaporator 20 is designed as a liquid / liquid heat exchanger 22 .

Über den Flüssig/Flüssig-Wärmetauscher 22 ist der Kältekreis mit einem Motorkühlkreislauf 24 gekoppelt. Der Motorkühlkreislauf dient in erster Linie zur Kühlung eines Antriebsmotors 25 mittels eines Kühlmittels. Über den Flüssig/Flüssig-Wärmetauscher 22 kann Wärme von dem Kühlmittel auf das Kältemittel des Kältekreises 12 übertragen werden. Der Motorkühlkreislauf 24 weist weiter einen Wärmetauscher 26 zur Abführung von Wärme des Kühlmittels an die Umgebung auf.The cooling circuit is coupled to an engine cooling circuit 24 via the liquid / liquid heat exchanger 22 . The engine cooling circuit primarily serves to cool a drive engine 25 by means of a coolant. Heat can be transferred from the coolant to the refrigerant of the refrigeration circuit 12 via the liquid / liquid heat exchanger 22 . The engine cooling circuit 24 also has a heat exchanger 26 for dissipating heat from the coolant to the surroundings.

Zusätzlich sind im Kühlmittelkreislauf 24 nicht näher dargestellte Heizmittel vorgesehen zum separaten Aufheizen des Kühlmittels. Diese Heizmittel können beispielsweise unmittelbar in den Kühlmittelkreislauf 24, beispielsweise an den mit den Bezugszeichen 28 oder 30 bezeichneten Stellen des Kühlkreislaufs 24, eingebaut sein. Elektrische Glühstifte könnten beispielsweise als Heizmittel eingesetzt werden.In addition, heating means (not shown in detail) are provided in the coolant circuit 24 for separately heating the coolant. These heating means can, for example, be installed directly in the coolant circuit 24 , for example at the points of the cooling circuit 24 designated by the reference numerals 28 or 30 . Electric glow plugs could be used as heating means, for example.

Alternativ könnten die Heizmittel in den Flüssig/Flüssig-Wärmetauscher 22 integriert sein und beispielsweise als PTC-Heizelemente oder andere elektrische Heizmittel ausgebildet sein.Alternatively, the heating means could be integrated in the liquid / liquid heat exchanger 22 and, for example, in the form of PTC heating elements or other electrical heating means.

Der Flüssig/Flüssig-Wärmetauscher 22 ist in einer Ausführungsform der Erfindung gebildet durch ein das Kühlmittel führende Rohr 32, auf das ein oder mehrere, das Kältemittel führende Rohr bzw. Rohre 34 aufgewickelt oder in geeigneter Weise aufgebracht ist bzw. sind, so daß die Rohre 32 und 34 miteinander in thermischer Verbindung stehen und ein Wärmeübertrag von dem in Pfeilrichtung 36 strömenden Kühlmittel auf das in Pfeilrichtung 38, 40 und 42 strömende Kältemittel möglich ist. Es sind auch andere Konstruktionen von Flüssig/Flüssig-Wärmetauschern denkbar.In one embodiment of the invention, the liquid / liquid heat exchanger 22 is formed by a pipe 32 carrying the coolant, onto which one or more pipes or pipes 34 carrying the coolant are wound or are applied in a suitable manner, so that the Pipes 32 and 34 are in thermal connection with one another and heat transfer from the coolant flowing in the direction of arrow 36 to the coolant flowing in the direction of arrow 38 , 40 and 42 is possible. Other designs of liquid / liquid heat exchangers are also conceivable.

Claims (3)

1. Heizungs- oder Klimatisierungssystem für ein Kraftfahrzeug mit einem Kältekreis (12), bestehend aus einem Verdichter (14), einem Kondensator (16), einem Expansionsorgan (18) und einem Verdampfer (20) und mit einem Motorkühlkreislauf (24) und mit einem Flüssig/Flüssig-Wärmetauscher (22), mit dem Wärme von einem Kühlmittel des Motorkühlkreislaufs (24) auf das Kältemittel des Kältekreises (12) übertragbar ist, wobei zur Übertragung der Wärme der Flüssig/Flüssig-Wärmetauscher (22) als Verdampfer (20) des Kältekreises (12) dient und der Kältekreis (12) als Wärmepumpe arbeitet, dadurch gekennzeichnet, daß Heizmittel vorgesehen sind, zum separaten Aufheizen des Kühlmittels.1. Heating or air conditioning system for a motor vehicle with a refrigeration circuit ( 12 ), consisting of a compressor ( 14 ), a condenser ( 16 ), an expansion element ( 18 ) and an evaporator ( 20 ) and with an engine cooling circuit ( 24 ) and with a liquid / liquid heat exchanger ( 22 ), with which heat can be transferred from a coolant of the engine cooling circuit ( 24 ) to the refrigerant of the cooling circuit ( 12 ), the liquid / liquid heat exchanger ( 22 ) serving as an evaporator ( 20 ) of the cooling circuit ( 12 ) and the cooling circuit ( 12 ) works as a heat pump, characterized in that heating means are provided for separately heating the coolant. 2. Heizungs- und Klimatisierungssystem nach Anspruch 1 dadurch gekennzeichnet, daß die Heizmittel in den Flüssig/Flüssig- Wärmetauscher (22) integriert sind.2. Heating and air conditioning system according to claim 1, characterized in that the heating means in the liquid / liquid heat exchanger ( 22 ) are integrated. 3. Heizungs- und Klimatisierungssystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Flüssig/Flüssig-Wärmetauscher (22) gebildet ist durch ein das Kühlmittel führende Rohr (32), auf das ein das Kältemittel führendes Rohr (34) aufgewickelt ist.3. Heating and air conditioning system according to claim 1 or 2, characterized in that the liquid / liquid heat exchanger ( 22 ) is formed by a coolant pipe ( 32 ), on which a refrigerant pipe ( 34 ) is wound.
DE1999109286 1999-03-03 1999-03-03 Heating or air conditioning system for motor vehicle has cooling and refrigeration circuits, heat exchanger for transferring heat, heating arrangement for separate heating of coolant Withdrawn DE19909286A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999109286 DE19909286A1 (en) 1999-03-03 1999-03-03 Heating or air conditioning system for motor vehicle has cooling and refrigeration circuits, heat exchanger for transferring heat, heating arrangement for separate heating of coolant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999109286 DE19909286A1 (en) 1999-03-03 1999-03-03 Heating or air conditioning system for motor vehicle has cooling and refrigeration circuits, heat exchanger for transferring heat, heating arrangement for separate heating of coolant

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Publication Number Publication Date
DE19909286A1 true DE19909286A1 (en) 2000-09-07

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DE1999109286 Withdrawn DE19909286A1 (en) 1999-03-03 1999-03-03 Heating or air conditioning system for motor vehicle has cooling and refrigeration circuits, heat exchanger for transferring heat, heating arrangement for separate heating of coolant

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10058514A1 (en) * 2000-11-24 2002-06-20 Obrist Engineering Gmbh Lusten Air conditioning plant for heating and cooling of rooms has multi-sectional channel system with second section passing through first one to discharge liquid phase heat carrier into heating section
WO2004094921A1 (en) * 2003-04-23 2004-11-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Combined fluid-air evaporator and novel switching concept for a heat pump in a ventilating apparatus
CN108725137A (en) * 2018-08-01 2018-11-02 苏州赛普瑞新能源汽车空调有限公司 A kind of heat exchange module of new-energy automobile
CN108900038A (en) * 2018-06-20 2018-11-27 南通常测机电设备有限公司 A kind of new-energy automobile motor cooling recirculation system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10058514A1 (en) * 2000-11-24 2002-06-20 Obrist Engineering Gmbh Lusten Air conditioning plant for heating and cooling of rooms has multi-sectional channel system with second section passing through first one to discharge liquid phase heat carrier into heating section
DE10058514C2 (en) * 2000-11-24 2003-07-10 Audi Ag air conditioning
WO2004094921A1 (en) * 2003-04-23 2004-11-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Combined fluid-air evaporator and novel switching concept for a heat pump in a ventilating apparatus
CN108900038A (en) * 2018-06-20 2018-11-27 南通常测机电设备有限公司 A kind of new-energy automobile motor cooling recirculation system
CN108725137A (en) * 2018-08-01 2018-11-02 苏州赛普瑞新能源汽车空调有限公司 A kind of heat exchange module of new-energy automobile

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Date Code Title Description
8141 Disposal/no request for examination