DE10317551B3 - Compression refrigerating system for a motor vehicle air-conditioning system comprises a carbon dioxide coolant cycle, and a reversing valve that can be switched to a second coolant cycle for heating operation - Google Patents
Compression refrigerating system for a motor vehicle air-conditioning system comprises a carbon dioxide coolant cycle, and a reversing valve that can be switched to a second coolant cycle for heating operation Download PDFInfo
- Publication number
- DE10317551B3 DE10317551B3 DE10317551A DE10317551A DE10317551B3 DE 10317551 B3 DE10317551 B3 DE 10317551B3 DE 10317551 A DE10317551 A DE 10317551A DE 10317551 A DE10317551 A DE 10317551A DE 10317551 B3 DE10317551 B3 DE 10317551B3
- Authority
- DE
- Germany
- Prior art keywords
- refrigerant
- compressor
- throttle element
- refrigeration system
- compression refrigeration
- 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.)
- Revoked
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Classifications
-
- 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
- F25B45/00—Arrangements for charging or discharging refrigerant
-
- 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
- B60H1/00921—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant does not change and there is an extra subcondenser, e.g. in an air duct
-
- 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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
-
- 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
- B60H2001/00957—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 locations with heat exchange within the refrigerant circuit itself, e.g. cross-, counter-, or parallel heat exchange
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/16—Receivers
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/01—Geometry problems, e.g. for reducing size
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2507—Flow-diverting valves
-
- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Die Erfindung betrifft ein Kompressionskältesystem einer Kraftfahrzeugklimaanlage, bei dem über Kältemittelleitungen (6) ein zirkulierender Umlauf eines CO2-Kältemittels von einem Verdichter (1) über einen Gaskühler (2), ein Expansionsorgan (4) und einen Verdampfer (5) zurück zum Verdichter (1) erfolgt. Zwischen dem Verdichter (1) und dem Gaskühler (2) ist ein Umschaltventil (9) vorhanden, mit dem in einen zweiten Kältemittelkreislauf für einen Heizbetrieb mit dem Verdichter (1), einem Dosselelement (7) und einem Heiz-Wärmetauscher (8) umgeschaltet werden kann. Im Heizbetrieb wird die Anlage im sogenannten Heißgasbetrieb betrieben. Um diesen stabil regeln zu können, ist ein Kältemittelvolumen zwischen dem Verdichter (1) und dem Drosselelement (7) von mindestens 50 cm3 vorgesehen.The invention relates to a compression refrigeration system of a motor vehicle air conditioning system, in which a circulating circulation of a CO 2 refrigerant from a compressor (1) via a gas cooler (2), an expansion element (4) and an evaporator (5) back to the compressor via refrigerant lines (6) (1) is done. Between the compressor (1) and the gas cooler (2) there is a changeover valve (9) which is used to switch to a second refrigerant circuit for heating operation with the compressor (1), a throttle element (7) and a heating / heat exchanger (8) can be. In heating mode, the system is operated in so-called hot gas mode. In order to be able to regulate this stably, a refrigerant volume between the compressor (1) and the throttle element (7) of at least 50 cm 3 is provided.
Description
Die Erfindung betrifft ein Kompressionskältesystem
einer Kraftfahrzeugklimaanlage, bei dem über Kältemittelleitungen ein zirkulierender
Umlauf eines CO2-Kältemittels von einem Verdichter über einen
Gaskühler,
ein Expansionsorgan und einen Verdampfer zurück zum Verdichter erfolgt.
Ein derartiges Kompressionskältesystem
ist aus der
Kraftfahrzeugklimaanlagen mit Kohlendioxid als Kältemittel werden zunehmend als umweltfreundliche Alternative zu herkömmlichen Klimaanlagen mit Flourkohlenwasserstoff-Kältemittel angesehen. Kohlendioxid ist zudem preiswert, überall erhältlich, ungiftig und auch nicht brennbar. Es wird daher auch den hohen Sicherheitsanforderungen in Kraftfahrzeugen gerecht. Auf Grund der im Kohlendioxidkühlkreislauf hohen Drucke von bis zu 140 bar ist ein einfacher Kühlmittelaustausch bei bestehenden Anlagen jedoch nicht möglich. Vielmehr müssen die Anlagen weitgehend neu entwickelt werden.Automotive air conditioning systems with carbon dioxide as refrigerant are increasingly becoming an environmentally friendly alternative to conventional ones Air conditioners viewed with fluorocarbon refrigerants. carbon dioxide is also inexpensive, everywhere available, non-toxic and non-flammable. It therefore also meets the high security requirements in motor vehicles. Because of the in the carbon dioxide cooling circuit high pressures of up to 140 bar is a simple coolant exchange not possible with existing systems. Rather, they have to Plants are largely redeveloped.
Im Zusammenhang mit Kohlendioxidklimaanlagen wurde bereits vorgeschlagen, diese auch zu Heizzwecken einzusetzen. Hierzu ist ein zweiter Kältemittelkreislauf vorgesehen, der einen Wärmetauscher für den Heizbetrieb aufweist. Die Umschaltung zwischen den beiden Kältemittelkreisläufen erfolgt durch ein entsprechendes Umschaltventil. Im Heizbetrieb wird die Anlage im sogenannten Heißgasbetrieb (Dreiecksprozess) betrieben. In ersten Versuchen hat sich gezeigt, dass bei entsprechenden Klimaanlagen für PKW der Heißgasprozess eine sehr hohe Dynamik aufweist, d.h. in den Kältemittelleitungen hohe Druckschwankungen auftreten. Als Folge davon ist der Heißgasprozess bei diesen PKW-Klimaanlagen nicht stabil regelbar.In connection with carbon dioxide air conditioners has already been proposed to use them for heating purposes. There is a second refrigerant circuit for this provided a heat exchanger for the Has heating operation. Switching between the two refrigerant circuits is done by a corresponding switch valve. The system is in heating mode in so-called hot gas operation (Triangular process) operated. Initial tests have shown that that with appropriate air conditioning systems for cars, the hot gas process has a very high dynamic, i.e. high pressure fluctuations in the refrigerant lines occur. As a result, the hot gas process in these car air conditioners is not stable adjustable.
Aufgabe der Erfindung ist es daher, das Kompressionskältesystem derart weiter zu entwickeln, dass im Heizbetrieb der Heißgasprozess stabil regelbar wird.The object of the invention is therefore the compression refrigeration system to develop in such a way that the hot gas process in heating mode becomes stable controllable.
Die Aufgabe wird durch ein Kompressionskältesystem mit den Merkmalen des Anspruchs 1 gelöst.The task is done through a compression refrigeration system solved with the features of claim 1.
Das Kompressionskältesystem weist in üblicher Weise einen ersten Kältemittelkreislauf auf, mit dem ein zirkulierender Umlauf eines CO2-Kältemittels von einem Verdichter über einen Gaskühler, ein Expansionsorgan und einen Verdampfer zurück zu dem Verdichter erfolgt. In einem zweiten Kältemittelkreislauf für den Heizbetrieb erfolgt ein Umlauf des CO2-Kältemittels von dem Verdichter über ein Drosselelement und einen Heizwärmetauscher. Die Umschaltung zwischen dem ersten und dem zweiten Kältemittelkreislauf erfolgt über ein Umschaltventil, das zwischen dem Verdichter und dem Gaskühler vorhanden ist. Auf Grund der begrenzten Platzverhältnisse für eine Klimaanlage eines PKW muss diese sehr kompakt ausgeführt sein. Die Kältemittelleitungen sind daher sehr kurz und weisen ein geringes Volumen auf. Es wurde nun erkannt, dass die schlechte Regelbarkeit des Heißgasprozesses im Heizbetrieb eine Folge des geringen Kältemittelvolumens vor dem Drosselorgan ist. Die Erfindung schlägt daher vor, das Kältemittelvolumen zwischen dem Verdichter und dem Drosselelement auf mindestens 50 cm3, vorzugsweise mindestens 100 cm3, zu erhöhen. Durch dieses Kältemittelvolumen vor dem Drosselelement ist dann ein ausreichendes Druckpolster vorhan den, so dass Druckschwankungen weitgehend verhindert werden können. Als Folge davon kann der Heißgasprozess nunmehr stabil geregelt werden. Eine Erhöhung des Kältemittelvolumens vor dem Drosselelement auf mehr als 200 cm3 bringt in der Regel keine Vorteile mehr. Die Bestimmung des optimalen Volumens bleibt jedoch dem Einzelfall überlassen.The compression refrigeration system usually has a first refrigerant circuit, with which a CO 2 refrigerant circulates from a compressor via a gas cooler, an expansion device and an evaporator back to the compressor. In a second refrigerant circuit for heating operation, the CO 2 refrigerant is circulated from the compressor via a throttle element and a heating heat exchanger. The changeover between the first and the second refrigerant circuit takes place via a changeover valve which is present between the compressor and the gas cooler. Due to the limited space available for an air conditioning system in a car, it has to be very compact. The refrigerant lines are therefore very short and have a small volume. It has now been recognized that the poor controllability of the hot gas process in heating operation is a result of the low refrigerant volume upstream of the throttle element. The invention therefore proposes to increase the refrigerant volume between the compressor and the throttle element to at least 50 cm 3 , preferably at least 100 cm 3 . This volume of refrigerant in front of the throttle element then provides a sufficient pressure cushion so that pressure fluctuations can be largely prevented. As a result, the hot gas process can now be controlled stably. Increasing the refrigerant volume in front of the throttle element to more than 200 cm 3 generally no longer has any advantages. However, the determination of the optimal volume is left to the individual case.
Die Erhöhung des Kältemittelvolumens vor dem Drosselelement kann auf verschiedene Weise erfolgen. Zunächst kann ein Kältemittelreservoir, insbesondere als Kältemittelstichleitung, zwischen dem Verdichter und dem Drosselelement vorhanden sein. Zum anderen kann das erforderliche Kältemittelvolumen auch durch eine Vergrößerung des Querschnittes der entsprechenden Kältemittelleitungen erreicht werden. Dabei kann die Kältemittelleitung zwischen dem Verdichter und dem Umschaltventil und/oder zwischen den Umschaltventil und dem Drosselelement einen größeren Querschnitt aufweisen als die Kältemittelleitungen zwischen den anderen Bauteilen. Eine weitere Möglichkeit, das erforderliche Volumen zu erreichen, besteht darin, bei gegebenem Querschnitt der Kältemittelleitung deren Länge entsprechend anzupassen. Insbesondere kann dabei die Kältemittelleitung zwischen dem Umschaltventil und dem Drosselelement länger ausgebildet sein, als die Kältemittelleitung zwischen dem Umschaltventil und dem Gaskühler.The increase in the refrigerant volume in front of the throttle element can be done in different ways. First of all, a refrigerant reservoir, especially as a refrigerant branch line, be present between the compressor and the throttle element. To the others may require the required volume of refrigerant also by increasing the Cross section of the corresponding refrigerant lines can be achieved. The refrigerant line between the compressor and the switching valve and / or between the switching valve and the throttle element have a larger cross section have than the refrigerant lines between the other components. Another way to do the required To achieve volume, for a given cross section, the Refrigerant line their length adjust accordingly. In particular, the refrigerant line formed longer between the switching valve and the throttle element than the refrigerant line between the changeover valve and the gas cooler.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels und der Figur näher beschrieben.The invention is described below of an embodiment and closer to the figure described.
Das in
Im Verdichter
Für
einen Heizbetrieb weist das Kompressionskältesystem einen zweiten Kältemittelkreislauf auf.
Dieser erfolgt von dem Verdichter
Die elektrische Regelung eines solchen Kältesystems erfolgt in an sich bekannter Weise mittels eines nicht dargestellten Reglers.The electrical regulation of such refrigeration Systems takes place in a manner known per se by means of a not shown Controller.
Auf Grund der kompakten Bauweise
eines Kompressionskältesystems
für einen
PKW sind die Kältemittelleitungen
Im Kraftfahrzeug wird in bekannter
Weise Luft über
den Wärmetauscher
Claims (6)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10317551A DE10317551B3 (en) | 2003-04-15 | 2003-04-15 | Compression refrigerating system for a motor vehicle air-conditioning system comprises a carbon dioxide coolant cycle, and a reversing valve that can be switched to a second coolant cycle for heating operation |
FR0403796A FR2853859A1 (en) | 2003-04-15 | 2004-04-09 | AIR CONDITIONING SYSTEM OF MOTOR VEHICLE WITH CO2 COOLING AGENT |
ES200400894A ES2258380B1 (en) | 2003-04-15 | 2004-04-13 | INSTALLATION OF AIR CONDITIONING FOR CARS WITH CO2 COOLANT. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10317551A DE10317551B3 (en) | 2003-04-15 | 2003-04-15 | Compression refrigerating system for a motor vehicle air-conditioning system comprises a carbon dioxide coolant cycle, and a reversing valve that can be switched to a second coolant cycle for heating operation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10317551B3 true DE10317551B3 (en) | 2004-04-22 |
Family
ID=32038823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10317551A Revoked DE10317551B3 (en) | 2003-04-15 | 2003-04-15 | Compression refrigerating system for a motor vehicle air-conditioning system comprises a carbon dioxide coolant cycle, and a reversing valve that can be switched to a second coolant cycle for heating operation |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE10317551B3 (en) |
ES (1) | ES2258380B1 (en) |
FR (1) | FR2853859A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1744108A2 (en) | 2005-07-15 | 2007-01-17 | Modine Manufacturing Company | Arrangement in a refrigeration cycle |
EP1821048A3 (en) * | 2006-02-17 | 2008-02-13 | Bayerische Motoren Werke Aktiengesellschaft | Air conditioning system for vehicles |
EP2944898A1 (en) * | 2014-05-15 | 2015-11-18 | Lennox Industries Inc. | Liquid line charge compensator |
US10330358B2 (en) | 2014-05-15 | 2019-06-25 | Lennox Industries Inc. | System for refrigerant pressure relief in HVAC systems |
US10663199B2 (en) | 2018-04-19 | 2020-05-26 | Lennox Industries Inc. | Method and apparatus for common manifold charge compensator |
US10830514B2 (en) | 2018-06-21 | 2020-11-10 | Lennox Industries Inc. | Method and apparatus for charge compensator reheat valve |
CN113606823A (en) * | 2020-05-05 | 2021-11-05 | 马勒国际有限公司 | Intermediate refrigerant accumulator and refrigerant system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3116471B1 (en) * | 2020-11-23 | 2022-10-14 | Valeo Systemes Thermiques | Motor vehicle thermal conditioning system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19925744A1 (en) * | 1999-06-05 | 2000-12-07 | Mannesmann Vdo Ag | Electrically driven compression refrigeration system with supercritical process |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2779216B1 (en) * | 1998-05-28 | 2000-08-04 | Valeo Climatisation | VEHICLE AIR CONDITIONING DEVICE USING A SUPERCRITICAL REFRIGERANT FLUID |
JP3929606B2 (en) * | 1998-07-08 | 2007-06-13 | カルソニックカンセイ株式会社 | Air conditioner for automobile |
DE19839002B4 (en) * | 1998-08-27 | 2007-02-15 | Valeo Klimasysteme Gmbh | In the cooling circuit integrated heating system |
US6715307B2 (en) * | 2001-01-24 | 2004-04-06 | Calsonic Kansei Corporation | Air conditioner for vehicle |
JP4511061B2 (en) * | 2001-02-15 | 2010-07-28 | サンデン株式会社 | Air conditioner for vehicles |
-
2003
- 2003-04-15 DE DE10317551A patent/DE10317551B3/en not_active Revoked
-
2004
- 2004-04-09 FR FR0403796A patent/FR2853859A1/en active Pending
- 2004-04-13 ES ES200400894A patent/ES2258380B1/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19925744A1 (en) * | 1999-06-05 | 2000-12-07 | Mannesmann Vdo Ag | Electrically driven compression refrigeration system with supercritical process |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1744108A2 (en) | 2005-07-15 | 2007-01-17 | Modine Manufacturing Company | Arrangement in a refrigeration cycle |
EP1744108A3 (en) * | 2005-07-15 | 2008-10-08 | Modine Manufacturing Company | Arrangement in a refrigeration cycle |
EP1821048A3 (en) * | 2006-02-17 | 2008-02-13 | Bayerische Motoren Werke Aktiengesellschaft | Air conditioning system for vehicles |
US10365022B2 (en) | 2014-05-15 | 2019-07-30 | Lennox Industries Inc. | Liquid line charge compensator |
US9976785B2 (en) | 2014-05-15 | 2018-05-22 | Lennox Industries Inc. | Liquid line charge compensator |
US10330358B2 (en) | 2014-05-15 | 2019-06-25 | Lennox Industries Inc. | System for refrigerant pressure relief in HVAC systems |
EP2944898A1 (en) * | 2014-05-15 | 2015-11-18 | Lennox Industries Inc. | Liquid line charge compensator |
US10921032B2 (en) | 2014-05-15 | 2021-02-16 | Lennox Industries Inc. | Method of and system for reducing refrigerant pressure in HVAC systems |
US10663199B2 (en) | 2018-04-19 | 2020-05-26 | Lennox Industries Inc. | Method and apparatus for common manifold charge compensator |
US10989456B2 (en) | 2018-04-19 | 2021-04-27 | Lennox Industries Inc. | Method and apparatus for common manifold charge compensator |
US10830514B2 (en) | 2018-06-21 | 2020-11-10 | Lennox Industries Inc. | Method and apparatus for charge compensator reheat valve |
US11512879B2 (en) | 2018-06-21 | 2022-11-29 | Lennox Industries Inc. | Method and apparatus for charge compensator reheat valve |
CN113606823A (en) * | 2020-05-05 | 2021-11-05 | 马勒国际有限公司 | Intermediate refrigerant accumulator and refrigerant system |
Also Published As
Publication number | Publication date |
---|---|
ES2258380B1 (en) | 2007-09-16 |
ES2258380A1 (en) | 2006-08-16 |
FR2853859A1 (en) | 2004-10-22 |
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