DE102017202680A1 - Refrigerant circuit of a vehicle air conditioning system with a heat pump function - Google Patents
Refrigerant circuit of a vehicle air conditioning system with a heat pump function Download PDFInfo
- Publication number
- DE102017202680A1 DE102017202680A1 DE102017202680.4A DE102017202680A DE102017202680A1 DE 102017202680 A1 DE102017202680 A1 DE 102017202680A1 DE 102017202680 A DE102017202680 A DE 102017202680A DE 102017202680 A1 DE102017202680 A1 DE 102017202680A1
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- DE
- Germany
- Prior art keywords
- refrigerant
- heat exchanger
- heat
- refrigerant circuit
- vehicle
- 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.)
- Ceased
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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
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00899—Controlling the flow of liquid in a heat pump system
-
- 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
-
- 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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
-
- 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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2225—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters arrangements of electric heaters for heating air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
- F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
-
- 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
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H2001/00949—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising additional heating/cooling sources, e.g. second evaporator
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
Die Erfindung betrifft einen Kältemittelkreislauf (1) einer Fahrzeugklimaanlage mit einer Wärmepumpenfunktion, umfassend einen Kältemittelverdichter (2), einen Wärmeübertrager (5), mit welchem Wärme aus der Umgebungsluft des Fahrzeugs und/oder Abwärme wenigstens einer elektrischen Komponente (9) des Fahrzeugs auf das Kältemittel des Kältemittelkreislaufs (1) übertragen wird, ein dem Wärmeübertrager (5) zugeordnetes Expansionsorgan (4), einen in einem Klimagerät (1.0) angeordneten und mit dem Kältemittelkreislauf (1) thermisch gekoppelten Heizungswärmeübertrager (6) zur Übertragung der Wärme aus der Umgebungsluft (L1) und/oder der Abwärme der elektrischen Komponente (9) auf einen dem Klimagerät (1.0) zugeführten Zuluftstrom (L2), und einen in dem Klimagerät (1.0) angeordneten elektrischen Zuheizer (7), wobei der Zuheizer (7) derart angeordnet ist, dass der von dem Heizungswärmeübertrager (6) erwärmte Zuluftstrom (L2) anschließend von dem Zuheizer (7) erwärmt wird.The invention relates to a refrigerant circuit (1) of a vehicle air conditioning system with a heat pump function, comprising a refrigerant compressor (2), a heat exchanger (5), with which heat from the ambient air of the vehicle and / or waste heat at least one electrical component (9) of the vehicle on the Refrigerant of the refrigerant circuit (1) is transmitted to the heat exchanger (5) associated with expansion element (4), in a air conditioner (1.0) and with the refrigerant circuit (1) thermally coupled heating heat exchanger (6) for transmitting the heat from the ambient air ( L1) and / or the waste heat of the electrical component (9) to an air conditioner (1.0) supplied supply air (L2), and in the air conditioner (1.0) arranged electric heater (7), wherein the heater (7) is arranged in that the supply air flow (L2) heated by the heating heat exchanger (6) is subsequently heated by the auxiliary heater (7) ill.
Description
Die Erfindung betrifft einen Kältemittelkreislauf einer Fahrzeugklimaanlage mit einer Wärmepumpenfunktion. The invention relates to a refrigerant circuit of a vehicle air conditioning system with a heat pump function.
Die
Es ist bekannt die in den Fahrzeuginnenraum strömende Zuluft mittels eines Heizungswärmetauschers im Klimagerät zu erwärmen, dessen Heizleistung aus dem Kühlkreislauf bspw. des Verbrennungsmotors eines Fahrzeugs bezogen wird. Bei elektrischen Antrieben eines Fahrzeugs weist das Kühlmittel bei niedrigen Umgebungstemperaturen nicht das erforderliche hohe Temperaturniveau auf, um eine komfortable Aufheizung des Fahrzeuginnenraums sicherzustellen. Daher werden zusätzliche Heizsysteme, wie elektrische Zuheizer oder Wärmepumpen mit elektrischen Komponenten, wie bspw. einem Hochvoltspeicher als Wärmequellen oder mit der Umgebungsluft als Wärmequelle eingesetzt. It is known to heat the incoming air flowing into the vehicle interior by means of a heating heat exchanger in the air conditioner whose heating power from the cooling circuit, for example. The internal combustion engine of a vehicle is related. In electric drives of a vehicle, the coolant at low ambient temperatures does not have the required high temperature level to ensure comfortable heating of the vehicle interior. Therefore, additional heating systems, such as electric heaters or heat pumps with electrical components, such as, for example, a high-voltage storage as heat sources or with the ambient air used as a heat source.
Eine solche Wärmepumpe nimmt dabei Wärmeenergie aus der Umgebung oder Abwärme von elektrischen Komponenten des Fahrzeugs bei geringem Temperaturniveau auf und muss sie zum Zwecke der Innenraumaufheizung auf einem höheren Temperaturniveau zur Verfügung stellen. Dies erfolgt mittels eines Kältemittelkreislaufs, der zwischen zwei Druckniveaus arbeitet. Je höher der Druck bzw. die Temperaturdifferenz ist, desto höher ist der Aufwand des Kältemittelverdichters und desto größer sind auch die Wärmeverluste in den Hochdruckleitungen. Such a heat pump absorbs heat energy from the environment or waste heat of electrical components of the vehicle at a low temperature level and must make it available for the purpose of interior heating at a higher temperature level. This is done by means of a refrigerant circuit which operates between two pressure levels. The higher the pressure or the temperature difference, the higher the cost of the refrigerant compressor and the greater the heat losses in the high-pressure lines.
Aus der
Aus der
Es ist Aufgabe der Erfindung einen Kältemittelkreislauf mit einer Wärmepumpenfunktion anzugeben, bei welchem Wärmeübertragungsverluste minimiert und daher eine hohe Effizienz zum Erwärmen des Fahrzeuginnenraums des Fahrzeugs erzielt wird. It is an object of the invention to provide a refrigerant circuit with a heat pump function, in which heat transfer losses minimized and therefore a high efficiency for heating the vehicle interior of the vehicle is achieved.
Diese Aufgabe wird gelöst durch einen Kältemittelkreislauf mit den Merkmalen des Patentanspruchs 1. This object is achieved by a refrigerant circuit having the features of patent claim 1.
Dieser Kältemittelkreislauf einer Fahrzeugklimaanlage mit einer Wärmepumpenfunktion umfasst erfindungsgemäß:
- – einen Kältemittelverdichter,
- – einen Wärmeübertrager, mit welchem Wärme aus der Umgebungsluft des Fahrzeugs und/oder Abwärme wenigstens einer elektrischen Komponente des Fahrzeugs auf das Kältemittel des Kältemittelkreislaufs übertragen wird,
- – ein dem Wärmeübertrager zugeordnetes Expansionsorgan,
- – einen in einem Klimagerät angeordneten und mit dem Kältemittelkreislauf thermisch gekoppelten Heizungswärmeübertrager zur Übertragung der Wärme aus der Umgebungsluft und/oder der Abwärme der elektrischen Komponente auf einen dem Klimagerät zugeführten Zuluftstrom, und
- – einen in dem Klimagerät angeordneten elektrischen Zuheizer, wobei der Zuheizer, derart angeordnet ist, dass der von dem Heizungswärmeübertrager erwärmte Zuluftstrom anschließend von dem Zuheizer erwärmt wird.
- A refrigerant compressor,
- A heat exchanger with which heat is transferred from the ambient air of the vehicle and / or waste heat from at least one electrical component of the vehicle to the refrigerant of the refrigerant circuit,
- An expansion element associated with the heat exchanger,
- - An arranged in an air conditioner and thermally coupled to the refrigerant circuit heating heat exchanger for transmitting the heat from the ambient air and / or the waste heat of the electrical component to the air conditioner supplied supply air, and
- - An arranged in the air conditioner electric heater, wherein the heater is arranged such that the heated by the heating heat exchanger supply air is then heated by the heater.
Bei diesem Kältemittelkreislauf erfolgt die Erwärmung der in den Fahrzeuginnenraum einströmenden Zuluft 2-stufig, indem zunächst die Wärmepumpenfunktion verwendet wird, um Wärme aus der Umgebungsluft und/oder um die Abwärme wenigstens einer elektrischen Komponente, bspw. eines elektrischen Antriebs, auf ein ausreichendes Temperaturniveau anzuheben. Anschließend wird in einer zweiten Stufe durch den direkt in dem Klimagerät angeordneten elektrischen Zuheizer die notwendige Ausblastemperatur für den Fahrzeuginnenraum eingestellt. Beide Stufen laufen voneinander unabhängig und beeinflussen sich nicht. In this refrigerant circuit, the heating of the inflowing into the vehicle interior supply air takes place in two stages, by first the heat pump function is used to heat from the ambient air and / or the waste heat of at least one electrical component, eg. An electric drive to a sufficient Raise temperature level. Subsequently, in a second stage, the necessary blow-out temperature for the vehicle interior is set by the electric heater arranged directly in the air-conditioning unit. Both stages run independently of each other and do not influence each other.
Nach einer vorteilhaften Weiterbildung der Erfindung ist der Heizungswärmeübertrager über einen Kühlmittelkreislauf thermisch indirekt mit dem Kältemittelkreislauf gekoppelt. Vorzugsweise wird dies dadurch realisiert, dass ein Hochdruck-Kältemittel-Kühlmittel-Wärmeübertrager stromabwärts dem Kältemittelverdichter nachgeschaltet und der Heizungswärmeübertrager in dem Kühlmittelkreislauf des Hochdruck-Kältemittel-Kühlmittel-Wärmeübertragers angeordnet ist. According to an advantageous embodiment of the invention, the heating heat exchanger is thermally coupled via a coolant circuit thermally indirectly to the refrigerant circuit. Preferably, this is realized in that a high-pressure refrigerant-refrigerant heat exchanger downstream of the refrigerant compressor downstream and the Heizungswärmeübertrager is disposed in the refrigerant circuit of the high-pressure refrigerant-refrigerant heat exchanger.
Nach einer anderen vorteilhaften Ausgestaltung der Erfindung ist der Heizungswärmeübertrager thermisch direkt mit dem Kältemittelkreislauf gekoppelt, indem dieser vorzugsweise dem Kältemittelverdichter stromabwärts nachgeschaltet ist. Hierdurch wird die Effizienz des Kältemittelkreislaufs weiter gesteigert, da die Wärmepumpe auf einem Niedertemperaturniveau arbeitet und der hierzu erforderliche reduzierte Druck mit einer von dem Kältemittelverdichter geringeren Leistung erbracht werden muss. Zudem werden im Vergleich zur indirekten thermischen Kopplung des Heizungswärmeübertragers mit dem Kältemittelkreislauf die Rohrlängen reduziert, wodurch auch die konvektiven Verluste reduziert werden. According to another advantageous embodiment of the invention, the heating heat exchanger is thermally coupled directly to the refrigerant circuit by this is preferably downstream of the refrigerant compressor downstream. As a result, the efficiency of the refrigerant circuit is further increased, since the heat pump operates at a low temperature level and the required reduced pressure with one of the refrigerant compressor lower power must be provided. In addition, compared to the indirect thermal coupling of Heizungswärmeübertragers with the refrigerant circuit, the tube lengths are reduced, whereby the convective losses are reduced.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels unter Bezugnahme auf die beigefügten Figuren ausführlich beschrieben. Es zeigen: The invention will now be described in detail by means of an embodiment with reference to the accompanying figures. Show it:
Die
Nach
Der Hochdruck-Kältemittel-Wärmeübertrager
Um die erforderliche Heizleistung von 4 kW für den Fahrzeuginnenraum zu erreichen, weist das Klimagerät
Wäre dieser Zuheizer
Anstelle der Umgebungsluft L1 als Wärmequelle für die Wärmepumpe, kann anstelle dieser Wärmequelle oder zusätzlich auch wenigstens eine elektrische Komponente
Das Ausführungsbeispiel gemäß
Beträgt die Umgebungstemperatur bspw. 0 °C, wird mittels des Wärmeübertragers
Um die erforderliche Ausblastemperatur von 40 °C zu erreichen, ist in dem Klimagerät
Um die Heizleistung in dem Klimagerät
Auch bei dem Kältemittelkreislauf
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1 1
- Kältemittelkreislauf Refrigerant circulation
- 1.0 1.0
- Klimagerät air conditioning
- 1.1 1.1
- Kühlmittelkreislauf Coolant circuit
- 1.2 1.2
- Kühlmittelkreislauf Coolant circuit
- 2 2
- Kältemittelverdichter Refrigerant compressor
- 3 3
- Hochdruck-Kältemittel-Kühlmittel-Wärmeübertrager High-pressure refrigerant-refrigerant heat exchanger
- 4 4
- Expansionsorgan expansion element
- 5 5
- Wärmeübertrager Heat exchanger
- 6 6
- Heizungswärmetauscher Heater core
- 7 7
- elektrischer Zuheizer electric heater
- 8 8th
- Chiller Chiller
- 9 9
- elektrische Komponente electrical component
- L1 L1
- Umgebungsluft ambient air
- L2 L2
- Zuluftstrom supply air flow
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- EP 2769861 A1 [0005] EP 2769861 A1 [0005]
- DE 102013213470 A1 [0006] DE 102013213470 A1 [0006]
Zitierte Nicht-PatentliteraturCited non-patent literature
- DIN 1946-3 [0002] DIN 1946-3 [0002]
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017202680.4A DE102017202680A1 (en) | 2017-02-20 | 2017-02-20 | Refrigerant circuit of a vehicle air conditioning system with a heat pump function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102017202680.4A DE102017202680A1 (en) | 2017-02-20 | 2017-02-20 | Refrigerant circuit of a vehicle air conditioning system with a heat pump function |
Publications (1)
Publication Number | Publication Date |
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DE102017202680A1 true DE102017202680A1 (en) | 2018-02-15 |
Family
ID=61018248
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Application Number | Title | Priority Date | Filing Date |
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DE102017202680.4A Ceased DE102017202680A1 (en) | 2017-02-20 | 2017-02-20 | Refrigerant circuit of a vehicle air conditioning system with a heat pump function |
Country Status (1)
Country | Link |
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DE (1) | DE102017202680A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018219859A1 (en) * | 2018-11-20 | 2020-05-20 | Audi Ag | Refrigeration system for a vehicle and vehicle with a refrigeration system |
CN111746297A (en) * | 2020-05-29 | 2020-10-09 | 广汽新能源汽车有限公司 | New energy automobile motor system of preheating, vehicle thermal management system and new energy automobile |
DE102020117704A1 (en) | 2020-07-06 | 2022-01-13 | Audi Aktiengesellschaft | Refrigeration system of a vehicle air conditioning system with a refrigerant circuit and a fluid heating circuit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010016588A1 (en) * | 2010-04-22 | 2011-11-24 | Ipetronik Gmbh & Co. Kg | System for regulating temperature of component of vehicle, particularly electric vehicle, has circuit of cooling agent, which has flowing direction in circuit |
DE102011057177A1 (en) * | 2011-07-21 | 2013-01-24 | Hyundai Motor Co. | Heat pump system for vehicle and control method for it |
EP2769861A1 (en) | 2012-08-10 | 2014-08-27 | LG Electronics Inc. | Air conditioner for electric vehicle |
DE102013213470A1 (en) | 2013-07-10 | 2015-01-15 | Bayerische Motoren Werke Aktiengesellschaft | Vehicle with a device for heating air flowing into a passenger compartment of the vehicle |
-
2017
- 2017-02-20 DE DE102017202680.4A patent/DE102017202680A1/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010016588A1 (en) * | 2010-04-22 | 2011-11-24 | Ipetronik Gmbh & Co. Kg | System for regulating temperature of component of vehicle, particularly electric vehicle, has circuit of cooling agent, which has flowing direction in circuit |
DE102011057177A1 (en) * | 2011-07-21 | 2013-01-24 | Hyundai Motor Co. | Heat pump system for vehicle and control method for it |
EP2769861A1 (en) | 2012-08-10 | 2014-08-27 | LG Electronics Inc. | Air conditioner for electric vehicle |
DE102013213470A1 (en) | 2013-07-10 | 2015-01-15 | Bayerische Motoren Werke Aktiengesellschaft | Vehicle with a device for heating air flowing into a passenger compartment of the vehicle |
Non-Patent Citations (1)
Title |
---|
DIN 1946-3 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018219859A1 (en) * | 2018-11-20 | 2020-05-20 | Audi Ag | Refrigeration system for a vehicle and vehicle with a refrigeration system |
DE102018219859B4 (en) * | 2018-11-20 | 2020-09-03 | Audi Ag | Refrigeration system for a vehicle and vehicle with a refrigeration system |
CN111746297A (en) * | 2020-05-29 | 2020-10-09 | 广汽新能源汽车有限公司 | New energy automobile motor system of preheating, vehicle thermal management system and new energy automobile |
CN111746297B (en) * | 2020-05-29 | 2021-11-30 | 广汽埃安新能源汽车有限公司 | Vehicle thermal management system and new energy automobile |
DE102020117704A1 (en) | 2020-07-06 | 2022-01-13 | Audi Aktiengesellschaft | Refrigeration system of a vehicle air conditioning system with a refrigerant circuit and a fluid heating circuit |
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