EP1215451A1 - Dispositif d'expansion s'utilisant notamment pour des systèmes combinés réfrigérateurs et pompes à chaleur avec dioxide de carbone comme réfrigérant - Google Patents

Dispositif d'expansion s'utilisant notamment pour des systèmes combinés réfrigérateurs et pompes à chaleur avec dioxide de carbone comme réfrigérant Download PDF

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Publication number
EP1215451A1
EP1215451A1 EP00127635A EP00127635A EP1215451A1 EP 1215451 A1 EP1215451 A1 EP 1215451A1 EP 00127635 A EP00127635 A EP 00127635A EP 00127635 A EP00127635 A EP 00127635A EP 1215451 A1 EP1215451 A1 EP 1215451A1
Authority
EP
European Patent Office
Prior art keywords
refrigerant
channel
throttle
shut
flow
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Withdrawn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
EP00127635A
Other languages
German (de)
English (en)
Inventor
Peter Dr. Heyl
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.)
Visteon Global Technologies Inc
Original Assignee
Visteon Global Technologies Inc
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 Visteon Global Technologies Inc filed Critical Visteon Global Technologies Inc
Priority to EP00127635A priority Critical patent/EP1215451A1/fr
Publication of EP1215451A1 publication Critical patent/EP1215451A1/fr
Withdrawn legal-status Critical Current

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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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/38—Expansion means; Dispositions thereof specially adapted for reversible cycles, e.g. bidirectional expansion restrictors
    • 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
    • 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

Definitions

  • the invention relates to a relaxation organ, which in particular for Use in combined refrigeration systems and heat pumps with carbon dioxide as Refrigerant is suitable.
  • Relaxation organs are components of refrigeration systems and Heat pumps, which are used to relax the refrigerant.
  • Refrigeration systems and heat pumps are used to cool or heat Utility rooms.
  • the seasonal climatic changes Conditions often require a heating system in winter and in the Transitional period and a cooling system in summer.
  • Refrigeration systems or heat pumps combinations of these are known.
  • utility rooms such as Living or office rooms as well as storage rooms or for cooling and Heating the passenger compartments of motor vehicles.
  • a refrigeration system is all in one Motor vehicle with an internal combustion engine modified such that with a additional exhaust gas heat exchanger and two additional Reusable shut-off devices with wiring according to the invention both a Refrigeration as well as a heat pump operation, depending on the Temperature requirements inside the passenger compartment is possible.
  • the refrigerant R134a is predominantly used in the Motor vehicle air conditioning used, but other refrigerants, such as Carbon dioxide, propane or butane for their possible uses examined.
  • the high-pressure refrigerant carbon dioxide plays an important role in this. in the Compare processes with R134a and carbon dioxide, for example this has approximately the same efficiency in refrigeration system operation. Become However, in the future systems in heat pump operation will be striven for Carbon dioxide due to the supercritical heat emission, the low Pressure ratio, a constant overpressure of the carbon dioxide on the Low pressure side - and therefore particularly suitable in the overall system. The latter property means that there is none due to the constant overpressure Impurities or foreign gases can get into the system.
  • the concept of the invention is that the relaxation organ of both sides can be flowed through with refrigerant and that the flowable cross section of the relaxation organ automatically at one Change in the flow direction of the refrigerant changes, which Relaxation organ to at least one, the throttling effect in one Has flow direction enabling throttle channel and that continues at least one other, only in the other direction of flow flow-through shut-off throttle duct is present, the shut-off effect is brought about by a mechanical closure element, which by the Pressure of the flowing refrigerant closes the shut-off throttle duct and thereby automatically depending on the flow direction of the Shut-off throttle duct can either be flowed through by refrigerant or is closed.
  • the proposed solution provides a simple and effective solution Multi-channel solution. At least one throttle channel is used in both Flows through the flow. Another channel, below Shut-off throttle channel is only in one direction of flow flow through.
  • the shut-off effect in the other is advantageous Direction of flow caused by a mechanical closure element, which by the pressure of the flowing refrigerant the shut-off throttle duct closes and thereby automatically depending on the flow direction of the Shut-off throttle channel can be flowed through once by refrigerant and in the other direction the shut-off throttle duct is closed.
  • the Expansion device 1 is in a refrigerant circuit Refrigerant connection lines 2 integrated and has as a mechanical Closing element one movable in a refrigerant and pressure tight Housing 6 arranged channel disc 3, which depending on the Flow direction 8 of the refrigerant in two different positions Housing 6 occupies. In each position there is a different one Flow cross section released by the expansion device 1.
  • the Expansion device 1 has at least one throttle duct 4, which is shown in FIG. 1 is advantageously integrated into the housing 6 of the relaxation element 1.
  • the channel disk 3 has two shut-off throttle channels 5 for refrigerant. In the flow direction 8.1 of the refrigerant shown is only the Throttle channel 4 flows through. In the other position of the not shown Channel plate 3 with opposite flow direction of the refrigerant flow through the throttle duct 4 and the shut-off throttle ducts 5.
  • An advantageous embodiment, not shown, is to design the throttle duct 4 so that it can be shut off. In this way, it is possible for the relaxation element 1, if necessary, to have the function of a non-return valve also implemented. It is also advantageous to design the throttle duct 4 simply as a groove in the duct disc 3 or the housing 6 in terms of production technology.
  • Fig. 2 shows a relaxation element 1, which is also a mechanical Closing element a movable in the refrigerant and pressure tight Housing 6 arranged channel plate 3. Again it takes Channel disk 3 two different depending on the flow direction 8 Positions in the housing 6. There is a different one in each position Flow cross section from the expansion element 1 for the refrigerant released, the channel disc 3 in this advantageous embodiment both at least one throttle channel 4 and at least one Shut-off throttle duct 5.
  • FIG. 3 shows a relaxation element 1 according to the invention Function when refrigerant flows in the flow direction 8.1, For example, in a combined heat pump circuit Refrigeration system - heat pump.
  • the channel disc is affected by the flow pressure pressed against the housing 6.
  • the surfaces of Housing 6 and channel disk 3 are designed as sealing surfaces 7, that the throttling effect of the relaxation element 1 as a whole and the Shut-off effect of the shut-off throttle duct 5 are realized. In this position the channel disk, only the throttle channel 4 is flowed through by refrigerant Shut-off throttle channels 5 are not flowed through.
  • Fig. 4 shows the inventive Relaxation device 1 in function when refrigerant flows through Flow direction 8.2, for example in the refrigeration system circuit combined refrigeration system - heat pump. Both the Throttle channel 4 and the shut-off throttle channels 5 of refrigerant flows through. In this position, the sealing surfaces 7 have the channel disk 3 the function of keeping the refrigerant flow through the housing 6 low or completely prevent it. The refrigerant essentially only flows through the channels provided, the throttle channels 4, the shut-off channels 5th
  • Fig. 5 shows a cross section to the flow direction 8.
  • the housing 6 and the channel disk 3 and the channels 4, 5 are each with an oval cross section executed. Equally advantageous is the design of the channels with a round one or other cross-sections deviating from the round cross-section.
  • sealing surface 7 merely causes that not uncontrolled refrigerant through the housing 6 and on the Channel disk 3 passes the relaxation element 1.
  • the quality of the Overall, sealing surfaces 7 only have to be so precise that the desired one Throttling effect is still given. This makes it easy to do designed sealing surface 7 calculate the amount of refrigerant passing and it can be dispensed with complex to produce sealing surfaces 7 what again an inexpensive manufacture of the invention Relaxation organ allows.
  • Both the throttle duct 4 and / or the shut-off throttle duct 5 can According to the invention in the channel disk 3 rectilinear, arcuate or be spiral shaped. This way it is possible with one longer duct to accommodate it in a compact duct disc and thus a space-saving relaxation element 1 according to the invention To make available.
  • the Ratio of the duct cross sections of throttle duct 4 and Shut-off throttle channel 5 to each other and the length of the channels can be Relaxation organ 1 according to the invention for use in Adapt refrigerant circuits with different refrigerants. Partially all that is required is to replace the channel disk 3 in order to combine it Refrigeration - heat pump system with the invention Switch relaxation device 1 to a new refrigerant, which is also seen cost-effectively over a longer period of time. So can by replacing the channel disk 3, the exchange of the entire Component when switching to a new refrigerant for a combined Refrigeration system - heat pump can be avoided.
  • channel disks for the refrigerants carbon dioxide, R134a and R290 can be optimized.
  • the use of the relaxation organ according to the invention is about mobile application of use in motor vehicles also for stationary systems advantageous.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP00127635A 2000-12-16 2000-12-16 Dispositif d'expansion s'utilisant notamment pour des systèmes combinés réfrigérateurs et pompes à chaleur avec dioxide de carbone comme réfrigérant Withdrawn EP1215451A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00127635A EP1215451A1 (fr) 2000-12-16 2000-12-16 Dispositif d'expansion s'utilisant notamment pour des systèmes combinés réfrigérateurs et pompes à chaleur avec dioxide de carbone comme réfrigérant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00127635A EP1215451A1 (fr) 2000-12-16 2000-12-16 Dispositif d'expansion s'utilisant notamment pour des systèmes combinés réfrigérateurs et pompes à chaleur avec dioxide de carbone comme réfrigérant

Publications (1)

Publication Number Publication Date
EP1215451A1 true EP1215451A1 (fr) 2002-06-19

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EP00127635A Withdrawn EP1215451A1 (fr) 2000-12-16 2000-12-16 Dispositif d'expansion s'utilisant notamment pour des systèmes combinés réfrigérateurs et pompes à chaleur avec dioxide de carbone comme réfrigérant

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EP (1) EP1215451A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7802441B2 (en) 2004-05-12 2010-09-28 Electro Industries, Inc. Heat pump with accumulator at boost compressor output
US7849700B2 (en) 2004-05-12 2010-12-14 Electro Industries, Inc. Heat pump with forced air heating regulated by withdrawal of heat to a radiant heating system
US7861541B2 (en) 2004-07-13 2011-01-04 Tiax Llc System and method of refrigeration

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2069630A (en) * 1935-10-24 1937-02-02 Gen Electric Flow controlling device for refrigerating systems
US4926658A (en) * 1989-04-14 1990-05-22 Lennox Industries, Inc. Two way flow control device
US5345780A (en) * 1990-07-18 1994-09-13 The United States Of America As Represented By The Secretary Of Commerce Bi-flow expansion device
US5706670A (en) * 1996-11-25 1998-01-13 Carrier Corporation Bidirectional meterd flow control device
US5715862A (en) * 1996-11-25 1998-02-10 Carrier Corporation Bidirectional flow control device
EP0851189A2 (fr) * 1996-12-30 1998-07-01 Carrier Corporation Dispositif de réglage de débit bidirectionnel
US5813244A (en) * 1996-11-25 1998-09-29 Carrier Corporation Bidirectional flow control device
EP0945290A2 (fr) 1998-03-27 1999-09-29 DaimlerChrysler AG Procédé et dispositif de chauffage et de refroidissement pour un espace utile d'un véhicule automobile
US6041849A (en) 1996-01-31 2000-03-28 Valeo Climatisation Heating device for vehicle using the coolant fluid circuit

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2069630A (en) * 1935-10-24 1937-02-02 Gen Electric Flow controlling device for refrigerating systems
US4926658A (en) * 1989-04-14 1990-05-22 Lennox Industries, Inc. Two way flow control device
US5345780A (en) * 1990-07-18 1994-09-13 The United States Of America As Represented By The Secretary Of Commerce Bi-flow expansion device
US6041849A (en) 1996-01-31 2000-03-28 Valeo Climatisation Heating device for vehicle using the coolant fluid circuit
US5706670A (en) * 1996-11-25 1998-01-13 Carrier Corporation Bidirectional meterd flow control device
US5715862A (en) * 1996-11-25 1998-02-10 Carrier Corporation Bidirectional flow control device
US5813244A (en) * 1996-11-25 1998-09-29 Carrier Corporation Bidirectional flow control device
EP0851189A2 (fr) * 1996-12-30 1998-07-01 Carrier Corporation Dispositif de réglage de débit bidirectionnel
EP0945290A2 (fr) 1998-03-27 1999-09-29 DaimlerChrysler AG Procédé et dispositif de chauffage et de refroidissement pour un espace utile d'un véhicule automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7802441B2 (en) 2004-05-12 2010-09-28 Electro Industries, Inc. Heat pump with accumulator at boost compressor output
US7849700B2 (en) 2004-05-12 2010-12-14 Electro Industries, Inc. Heat pump with forced air heating regulated by withdrawal of heat to a radiant heating system
US7861541B2 (en) 2004-07-13 2011-01-04 Tiax Llc System and method of refrigeration

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