EP3819577A1 - Wärmetauscher mit steuerungsmitteln - Google Patents

Wärmetauscher mit steuerungsmitteln Download PDF

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Publication number
EP3819577A1
EP3819577A1 EP19461599.3A EP19461599A EP3819577A1 EP 3819577 A1 EP3819577 A1 EP 3819577A1 EP 19461599 A EP19461599 A EP 19461599A EP 3819577 A1 EP3819577 A1 EP 3819577A1
Authority
EP
European Patent Office
Prior art keywords
pass
heat exchanger
inlet
fluid
outlet
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Withdrawn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
EP19461599.3A
Other languages
English (en)
French (fr)
Inventor
Michal BELZOWSKI
Karol POKRYWINSKI
Dawid Szostek
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.)
Valeo Autosystemy Sp zoo
Original Assignee
Valeo Autosystemy Sp zoo
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 Valeo Autosystemy Sp zoo filed Critical Valeo Autosystemy Sp zoo
Priority to EP19461599.3A priority Critical patent/EP3819577A1/de
Priority to PCT/EP2020/079620 priority patent/WO2021089324A1/en
Publication of EP3819577A1 publication Critical patent/EP3819577A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0417—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with particular circuits for the same heat exchange medium, e.g. with the heat exchange medium flowing through sections having different heat exchange capacities or for heating/cooling the heat exchange medium at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0084—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media

Definitions

  • the invention relates to heat exchangers for air conditioning and heat pump applications.
  • it relates to heat exchangers for use in automotive industry.
  • AC mode air conditioning mode
  • the heat exchanger works as an ordinary condenser.
  • the refrigerant at the inlet at a typical operation point is in gaseous state and needs to be cooled inside the core in order to deliver liquid, subcooled refrigerant at outlet.
  • the cores are usually configured in manner ensuring that number of tubes in first pass is significantly greater than number of tubes in second pass.
  • Number of tubes in second pass may be usually 8-12 when total number of tubes may be equal or above 60 for some specific application.
  • This solution is beneficial, because it allows decrease in pressure drop in first pass, where density of refrigerant is small and consequently the volumetric flow is significant.
  • the refrigerant is condensed, i.e. it is fluid or mostly fluid, while its density is significantly higher and in connection to that volumetric flow is also significantly lower.
  • heat exchangers adapted to work in a so-called HP mode (heat pump mode).
  • HP mode the temperature of refrigerant at inlet is lower than temperature of air flowing through the core.
  • Refrigerant is heated inside core and in the second pass temperature of refrigerant is higher and due to that density is smaller than in the first pass.
  • the object of the invention is, among others, a heat exchanger comprising a first manifold and a second manifold connected by a bundle of tubes, configured to provide an inlet pass, an outlet pass and an intermediate pass for a heat exchange fluid, characterized in that the heat exchanger comprises controlling means adapted to switch between a first state, in which co-flow of the heat exchange fluid in the outlet pass and the intermediate pass with counterflow in the inlet pass is enabled, and a second state in which co-flow of the heat exchange fluid in the inlet pass and the intermediate pass with counterflow in the outlet
  • the heat exchanger is further comprising an inlet port associated with the inlet pass and an outlet port associated with an outlet pass, wherein both are located on the first manifold.
  • the flow between the inlet pass, the intermediate pass and the outlet pass is blocked within the second manifold, wherein the heat exchanger further comprises an outside channel, the outside channel being adapted to receive the fluid from and distribute the fluid to the inlet pass, intermediate pass and the outlet pass.
  • the outside channel is adapted to receive the fluid from and distribute the fluid to the inlet pass, intermediate pass and the outlet pass at places which promote the flow through and from specific tubes within the pass, while hindering the flow through and from the remaining ones.
  • the outside channel is fluidly connected to the second manifold such that there is a first opening at the level of the inlet pass, a second opening at the level of the intermediate pass, and a third opening at the level of the outlet pass to enable flow between the passes and the manifold.
  • each of the openings is located in the lower section of respective pass.
  • the heat exchanger further comprises a tubular body connected fluidically to the first manifold so that it can receive the fluid from and distribute the fluid to the inlet pass, intermediate pass and the outlet pass, wherein the tubular body comprises the controlling means.
  • the controlling means comprise a valve assembly, the valve assembly comprising two baffles connected to each other and adapted to cooperate with the tubular body so that in the first state they block fluid flow between the inlet pass and the intermediate pass, and in the second state they block fluid flow between the intermediate pass and the outlet pass.
  • controlling means are adapted to switch between the first state and the second state based on temperature of the core and/or environment of the heat exchanger.
  • Another object of the invention is an air conditioning circuit comprising a heat exchanger as described above.
  • Figs. 1 and 2 present heat exchanger according to the invention, wherein Fig. 1 shows the heat exchanger in heat pump mode, while Fig. 2 shows the heat exchanger in air conditioning mode.
  • a heat exchanger 1 comprises a first manifold 2 and a second manifold 3 connected by a bundle of tubes 4.
  • the heat exchanger is configured to provide an inlet pass 5, an outlet pass 6 and an intermediate pass 7 for a heat exchange fluid, the intermediate pass 7 being located between the inlet pass 5 and the outlet pass 6.
  • the tubes 4 within the bundle are spaced with respect to each other to enable heat exchange with a second fluid, for example air, travelling through the spaces between the tubes. Said spaces may comprise fins for facilitating the heat exchange.
  • the heat exchanger 1 further comprises an inlet port 8 associated with the inlet pass 5 and an outlet 9 port associated with an outlet pass 6, wherein both are located on the first manifold 2.
  • the heat exchanger 1 further comprises controlling means 50 adapted to switch between a first state, in which co-flow of the heat exchange fluid in the outlet pass 6 and the intermediate pass 7 with counterflow in the inlet pass 5 is enabled, and a second state in which co-flow of the heat exchange fluid in the inlet pass 5 and the intermediate pass 7 with counterflow in the outlet pass 5 is enabled. This may be done by selectively blocking the flow between the passes by the controlling means 50.
  • the controlling means 50 are adapted to receive the fluid from and distribute the fluid to the inlet pass 5, intermediate pass 7 and the outlet pass 6.
  • One example of implementation of controlling means adapted for switching between the first state and the second state may be integrating them into or with a tubular body 10 connected fluidically to the first manifold 2 so that it can receive the fluid from and distribute the fluid to the inlet pass 5, intermediate pass 7 and outlet pass 6.
  • the controlling means 50 may comprise a valve assembly with two baffles 41, 42 connected to each other (for example by a rod 43), and adapted to cooperate with the tubular body 10 so that in the first state they block fluid flow between the inlet pass 5 and the intermediate pass 7, and in the second state they block fluid flow between the intermediate pass 7 and the outlet pass 6.
  • the switching between the first and second states may be controlled automatically or manually. Other ways of effecting the blocking and enabling the flow as explained above are also possible as long as they allow to execute reliably the functioning of the heat exchanger.
  • the flow between the inlet pass 5, the intermediate pass 7 and the outlet pass 6 may be blocked within the second manifold 3.
  • the heat exchanger then further may comprise an outside channel 11, the outside channel 11 being adapted to receive the fluid from and distribute the fluid to the inlet pass 5, intermediate pass 7 and the outlet pass 6.
  • the outside channel 11 then is fluidly connected to the second manifold 3 such that there is a first opening 31 at the level of the inlet pass 5, a second opening 32 at the level of the intermediate pass 7, and a third opening 33 at the level of the outlet pass 6.
  • the outside channel 11 is adapted to receive the fluid from and distribute the fluid to the inlet pass 5, intermediate pass 7 and the outlet pass 6 at places which promote the flow through and from specific tubes within the pass, while hindering the flow through and from the remaining ones of said pass.
  • each of the openings 31, 32, 33 is located in the lower section of respective pass 5, 7, 6.
  • the controlling means 50 are set to the first state.
  • the refrigerant enters the heat exchanger through the inlet port 8 and then travels through the inlet pass 5.
  • the fluid then is turned and flows in the intermediate pass 7 as well as the outlet pass 6, as allowed by the controlling means 50, both in a direction opposite to the direction within the inlet pass 5.
  • the fluid then may exit the heat exchanger through the outlet port 9.
  • the controlling means are set in the second state.
  • the refrigerant enters the heat exchanger through the inlet port 8 and then travels through the inlet pass 5, as well as the intermediate pass 7 in the same direction, as allowed by the controlling means 50.
  • the fluid then is turned and flows in the outlet pass 6 in a direction opposite to the direction within the inlet and intermediate passes 5, 7.
  • the fluid then may exit the heat exchanger through the outlet port 9.
  • the switching between the first state and the second state allows to achieve optimal performance, connected to the amount of tubes within passes, without reversing the flow within the same heat exchanger.
  • the controlling means 50 can be driven based on temperature, e.g. thermostatic valve or pressure e.g. pressure valve.
  • Thermostatic valve can be beneficial due to fact that with system in a switch of state, it will adjust its position according to more probable position. For example, it will switch to AC mode in summer when temperature of the environment and/or core will be high, or HP mode when temperature of the environment and/or the core will be low, for example in winter.
  • valves e.g. rotating valve, actuators e.g. driven by various factors, including solenoid, core, repartition of tubes, number of passes etc.
  • actuators e.g. driven by various factors, including solenoid, core, repartition of tubes, number of passes etc.
  • inlet, intermediate and outlet passes may be neighbored by further passes, and necessarily be directly connected to inlet and/or outlet ports. Nevertheless, the general concept can still be applicable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP19461599.3A 2019-11-06 2019-11-06 Wärmetauscher mit steuerungsmitteln Withdrawn EP3819577A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19461599.3A EP3819577A1 (de) 2019-11-06 2019-11-06 Wärmetauscher mit steuerungsmitteln
PCT/EP2020/079620 WO2021089324A1 (en) 2019-11-06 2020-10-21 A heat exchanger with controlling means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19461599.3A EP3819577A1 (de) 2019-11-06 2019-11-06 Wärmetauscher mit steuerungsmitteln

Publications (1)

Publication Number Publication Date
EP3819577A1 true EP3819577A1 (de) 2021-05-12

Family

ID=68503053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19461599.3A Withdrawn EP3819577A1 (de) 2019-11-06 2019-11-06 Wärmetauscher mit steuerungsmitteln

Country Status (2)

Country Link
EP (1) EP3819577A1 (de)
WO (1) WO2021089324A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001012823A (ja) * 1999-06-30 2001-01-19 Bosch Automotive Systems Corp 冷媒凝縮器
GB2409510A (en) * 2001-05-17 2005-06-29 Delphi Tech Inc Heat exchanger for an air conditioning system
US20070240850A1 (en) * 2006-04-14 2007-10-18 Seongseok Han Heat exchanger
US20080023182A1 (en) * 2006-07-25 2008-01-31 Henry Earl Beamer Dual mode heat exchanger assembly
US20150251517A1 (en) * 2012-11-08 2015-09-10 Halla Visteon Climate Control Corp. Heat exchanger for refrigerant circuitry
EP2933586A1 (de) 2014-04-16 2015-10-21 Valeo Systemes Thermiques Kältekreislauf
US20180274864A1 (en) * 2015-06-30 2018-09-27 Hanon Systems Outdoor heat exchanger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001012823A (ja) * 1999-06-30 2001-01-19 Bosch Automotive Systems Corp 冷媒凝縮器
GB2409510A (en) * 2001-05-17 2005-06-29 Delphi Tech Inc Heat exchanger for an air conditioning system
US20070240850A1 (en) * 2006-04-14 2007-10-18 Seongseok Han Heat exchanger
US20080023182A1 (en) * 2006-07-25 2008-01-31 Henry Earl Beamer Dual mode heat exchanger assembly
US20150251517A1 (en) * 2012-11-08 2015-09-10 Halla Visteon Climate Control Corp. Heat exchanger for refrigerant circuitry
EP2933586A1 (de) 2014-04-16 2015-10-21 Valeo Systemes Thermiques Kältekreislauf
US20180274864A1 (en) * 2015-06-30 2018-09-27 Hanon Systems Outdoor heat exchanger

Also Published As

Publication number Publication date
WO2021089324A1 (en) 2021-05-14

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