EP4194787A1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
EP4194787A1
EP4194787A1 EP21213845.7A EP21213845A EP4194787A1 EP 4194787 A1 EP4194787 A1 EP 4194787A1 EP 21213845 A EP21213845 A EP 21213845A EP 4194787 A1 EP4194787 A1 EP 4194787A1
Authority
EP
European Patent Office
Prior art keywords
tubes
manifold
flow path
heat exchanger
fluid
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.)
Pending
Application number
EP21213845.7A
Other languages
German (de)
English (en)
Inventor
Michal BELZOWSKI
Dawid Szostek
Dominik Sporna
Grzegorz Romanski
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 EP21213845.7A priority Critical patent/EP4194787A1/fr
Publication of EP4194787A1 publication Critical patent/EP4194787A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • F28D7/16—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 in parallel spaced relation
    • F28D7/1684—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 in parallel spaced relation the conduits having a non-circular cross-section
    • F28D7/1692—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 in parallel spaced relation the conduits having a non-circular cross-section with particular pattern of flow of the heat exchange media, e.g. change of flow direction
    • 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
    • F25B39/00—Evaporators; 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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F28F1/128—Fins with openings, e.g. louvered fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F28F3/027—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
    • 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
    • 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
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0221—Header boxes or end plates formed by stacked elements
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0251—Massive connectors, e.g. blocks; Plate-like connectors
    • F28F9/0253—Massive connectors, e.g. blocks; Plate-like connectors with multiple channels, e.g. with combined inflow and outflow channels
    • 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
    • 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F2009/0285—Other particular headers or end plates
    • F28F2009/0292—Other particular headers or end plates with fins

Definitions

  • the present invention relates to a heat exchanger.
  • the present invention relates to a heat exchanger for a motor vehicle.
  • heat exchangers are used in many applications to exchange heat between two or more fluids.
  • the fluid circuits can be adapted for the fluids, for example, a refrigerant and a coolant, respectively.
  • the refrigerant flow path may be defined through the heat exchange elements provided in the heat exchanger.
  • the heat exchangers comprising, for example, a two-pass structure or a multi-pass structure are preferred because the heat exchange fluid has more time to flow across heat exchange tubes.
  • the rate of heat exchange and thermal efficiency of the heat exchanger are increased.
  • the rate of heat exchange and thermal efficiency are increased in multi-pass type heat exchangers, the heat exchangers experience some problems, such as non-uniform distribution of the heat exchange fluid across the heat exchange tubes.
  • the multi-pass heat exchanger includes a plurality of flow paths provided by a plurality of tubes connected between two manifolds.
  • the manifold incudes one refrigerant inlet channel and one refrigerant outlet channel.
  • the refrigerant inlet channel receives refrigerant from the refrigerant circuit and distributes among the tubes.
  • Each tube has small cross sectional flow area.
  • the plurality of tubes forms a large number of small cross sectional flow area for refrigerant flow.
  • single inlet channel and single outlet channel may not be sufficient for a heat exchanger core employing wide multi-port extrusion tubes.
  • changing the design or size of the channels without increasing the size of the heat exchanger may be advantageous to fit the heat exchanger into a given area for the application, however due to limited space required by customers, the resistance to pressure is a major factor limiting diameter of single channel.
  • non-uniform distribution of the heat exchange fluid across the heat exchange tubes of the heat exchanger reduces thermal efficiency and leads to thermal shock in some of the heat exchange tubes. As a result, service life of the heat exchanger is reduced.
  • some elements or parameters may be indexed, such as a first element and a second element.
  • this indexation is only meant to differentiate and name elements, which are similar but not identical. No idea of priority should be inferred from such indexation, as these terms may be switched without betraying the invention. Additionally, this indexation does not imply any order in mounting or use of the elements of the invention.
  • the present invention relates to a heat exchanger for a heat exchange between a first fluid and at least one second fluid.
  • the heat exchanger may comprise a first manifold and a second manifold spaced apart from the first manifold.
  • a plurality of tubes may be configured to provide a fluidal communication between the first manifold and the second manifold for flow of the first fluid.
  • the heat exchanger further comprises a connector block in fluid communication with the first manifold.
  • the connector block includes a first inlet port and a second inlet port.
  • the connector block is disposed at a housing enclosing a heat exchanger core.
  • the plurality of tubes, the first manifold and the second manifold defines the heat exchanger core.
  • the plurality of tubes may comprise a first stack of tubes and a second stack of tubes arranged in parallel to the first stack of tubes.
  • the first stack of tubes comprises a first set of tubes providing the first fluid flow between a first inlet port and the second manifold in a first direction defining a first flow path.
  • the first stack of tubes further comprises a second set of tubes providing the first fluid flow between the second manifold and the first manifold in a second direction defining a second flow path.
  • the second flow path is in fluid communication with the first flow path through the second manifold.
  • the second stack of tubes comprises a third set of tubes providing the first fluid flow between the first manifold and the second manifold in the first direction defining a third flow path.
  • the third flow path is in fluid communication with the second flow path through the first manifold.
  • the second stack of tubes further comprises a fourth set of tubes providing the first fluid flow between the second manifold and a first outlet port in the second direction to define a fourth flow path.
  • the fourth flow path is in fluid communication with the third flow path through the first manifold.
  • the first manifold comprises at least two inlet channels and at least two outlet channels.
  • the inlet channels are fluidly connected with the first set of tubes and the first inlet port.
  • the outlet channels are fluidly connected with the fourth set of tubes and the first outlet port.
  • the heat exchanger further comprises a first diverter plate arranged between a first header plate and a first cover of the first manifold.
  • the first diverter plate comprises a plurality of horizontal orifices for directing fluid between the second flow path and the third flow path.
  • the heat exchanger further comprises a second diverter plate arranged between a second header plate and a second cover of the second manifold.
  • the second diverter plate comprises plurality of longitudinal orifices for directing fluid between the first flow path and the second flow path, and between the third flow path and the fourth flow path.
  • the inlet channels and outlet channels are defined by the first cover of the first manifold.
  • the first flow path and the second flow path form a first U- flow.
  • the second flow path and the third flow path form a second U-flow.
  • the third flow path and the fourth flow path form a third U-flow.
  • at least two inlet channels and at least two outlet channels comprises a same cross-section.
  • at least two inlet channels comprises a different cross-section than the at least two outlet channels.
  • at least two inlet channels and at least two outlet channels comprises a variable cross-sectional area.
  • at least two inlet channels and at least two outlet channels comprises a cross section successively diminishing along a downstream side of the first fluid entering through the inlet channels.
  • at least two inlet channels and at least two outlet channels comprises a cross section successively increasing along a downstream side of the first fluid entering through the inlet channels.
  • the present invention discloses an improved heat exchanger to achieve uniform distribution of a heat exchange fluid at a heat exchanger core.
  • the heat exchanger is provided with at least one manifold having multiples channels for distribution of heat exchange fluid.
  • the multiple channels may be connected to desired tubes or a desired zone of the heat exchanger core to achieve optimal distribution of heat exchange fluid.
  • the heat exchanger may adopt a multi-pass structure and provide a longer flow path for the flow of the heat exchange fluid, for example refrigerant, to increase the heat transfer.
  • FIG. 1 shows a perspective view of a heat exchanger 100 according to an embodiment of the present invention.
  • FIG. 2 shows a perspective view of a heat exchanger 100 of FIG. 1 without a housing 102 and a connector block 104.
  • the heat exchanger 100 comprises a heat exchanger core including at least two manifolds 110, 124, a plurality of flow tubes 134 connected between the manifolds 110, 124 and at least one connector block 104.
  • the connector block 104 includes a first inlet port 106A and a first outlet port 106B adapted to connect with a first external circuit supplying a first fluid.
  • the first fluid is a refrigerant.
  • the manifolds 110, 124 may include a first manifold 110 and a second manifold 124.
  • the first manifold 110 may comprise at least two inlet channels 120A, 120B and at least two outlet channels 122A, 122B.
  • the inlet channels 120A, 120B may be in fluid communication with the first inlet port 106A and the outlet channels 122A, 122B may be in fluid communication with the first outlet port 106B.
  • the first manifold 110 may comprise a first header plate 112 and a first cover 114
  • the second manifold 124 may comprise a second header plate 132 and a second cover 126
  • the plurality of heat exchange tubes 134 may comprise a first end and an opposing second end. The first end of each heat exchange tube 134 is received into corresponding tube holes of a first header plate 112 of the first manifold 110. The opposing second end of the heat exchange tubes 134 are received into the corresponding tube holes of a second header plate 132 of the second manifold 124.
  • the term the heat exchange tubes 134 or tubes 134 are interchangeably used in the document.
  • the heat exchanger 100 may further comprise a housing 102 and at least one connector block 104.
  • the housing 102 may comprise at least one opening to receive the connector block 104 of the heat exchanger core so that the connector block 104 extends outside the housing 102.
  • the housing 102 includes a second inlet port 108A and a second outlet port 108B adapted to connect with a second external circuit supplying at least one second fluid.
  • the second fluid is a coolant.
  • the first fluid may flow from the first inlet port 106A to the inlet channels 120A, 120B of the first manifold 110. From the inlet channels 120A, 120B, the first fluid circulates between the manifolds 110, 124 and within the heat exchange tubes 134, and reaches the outlet channels 122A, 122B, which define a first fluid flow circuit.
  • the first fluid flow circuit is explained in detail in further paragraphs.
  • the second fluid flows around the heat exchange tubes 134 from the second inlet port 108A and reaches the second outlet port 108B, which defines the second fluid flow circuit.
  • the refrigerant flow and the coolant flow in and around the heat exchange core enables heat exchange between the coolant and refrigerant.
  • the heat exchange tubes 134 are flat tubes.
  • the heat exchange tubes 134 may be multi-channel tubes containing several flow channels or paths.
  • fins 160 are located between the heat exchange tubes 134 to promote the transfer of heat between the refrigerant within the tubes 134 and the coolant passing over the tubes 134.
  • the fins 160 are constructed of aluminium, brazed or otherwise joined to the tubes 134, and disposed generally perpendicular to the flow of refrigerant.
  • the fins 160 may be made of other materials that facilitate heat transfer and may extend in parallel or at varying angles with respect to the flow of the refrigerant.
  • the fins 160 may be louvered fins, corrugated fins, or any other suitable type of fin.
  • All components of the heat exchanger 100 mentioned above can be made of materials suitable for brazing, for example aluminium, steel and their alloys. In order to obtain the proper fluid tightness of the assembly all components thereof are connected to each other by brazing or any another suitable means.
  • the plurality of heat exchange tubes 134 are arranged as two parallel stack of heat exchange tubes 136, 138 including a first stack of tubes 136 and a second stack of tubes 138.
  • the first stack of tubes 136 and the second stack of tubes 138 are fluidically isolated from each other at the second manifold 124, so that the refrigerant does not pass from the first stack of tubes 136 to the second stack of tubes 138 through the second manifold 124.
  • the first stack of tubes 136 includes a first set of tubes 136A and a second of tubes 136B.
  • the second stack of tubes 138 includes a third set of tubes 138A and a fourth set of tubes 138B.
  • the first set of tubes 136A is in fluid communication with the at least two inlet channels 120A, 120B.
  • the second set of tubes 136B are in fluid communication with the first set of tubes 136A through the second manifold 124.
  • the third set of tubes 138A are in fluid communication with the second set of tubes 136B through the first manifold 110.
  • the fourth set of tubes 138B are in fluid communication with the third set of tubes 138A through the second manifold 124.
  • the fourth set of tubes 138B is in fluid communication with the at least two outlet channels 122A, 122B.
  • the refrigerant flows from inlet channels 120A, 120B (shown in FIG. 2 ) to the second manifold 124 through the first set of tubes 136A, which defines a first pass or first flow path 140 (shown in FIG. 8 ).
  • the refrigerant flows to the first manifold 110 through the second set of tubes 136B, which defines a second pass or a second flow path 142 (shown in FIG. 8 ).
  • first flow path 140 is in fluidic communication with the second flow path 142.
  • the refrigerant flows to the second manifold 124 through the third set of tubes 138A, which defines a third pass or a third flow path 144 (shown in FIG. 8 ).
  • the second set of tubes 136B is in fluid communication with the third set of tubes 138A at the first manifold 110
  • the second flow path 142 is in fluidic communication with the third flow path 144.
  • the refrigerant reaches the at least two outlet channels 122a, 122B through the fourth set of tubes 138B, which defines a fourth pass or a fourth flow path 146 (shown in FIG. 8 ).
  • the heat exchanger 100 adopts a four-pass configuration.
  • the first set of tubes 136A may be one half of the heat exchange tubes 134 among the first stack of tubes 136 and the second set of tubes 136B may be another half of the heat exchange tubes 134 among the first stack of tubes 136.
  • the third set of tubes 138A may be one of half of heat exchange tubes 134 among the second stack of tubes 138 and the fourth set of tubes 138B may be another half of the heat exchange tubes 134 among the second stack of tubes 138.
  • the first set of tubes 136A, the second set of tubes 136B, the third set of tubes 138A, and the fourth set of tubes 138B may include any number heat exchange tubes.
  • the first set of tubes 136A may be a lower half of tubes of the first stack of tubes 136.
  • the second set of tubes 136B may be an upper half of tubes of the first stack of tubes 136.
  • the third set of tubes 138A may be an upper half of tubes of the second stack of tubes 138.
  • the fourth set of tubes 138B may be a lower half of tubes of the second stack of tubes 138.
  • the first manifold 110 may be fluidically communicated with the first open ends of the first set of tubes 136A, the second set of tubes 136B, the third set of tubes 138A and the fourth set of tubes 138B.
  • the first manifold 110 includes a first portion 110A and a second portion 110B.
  • the first portion 110A communicates with a first open ends of the second set of tubes 136B and third set of tubes 138A.
  • the first open ends of the second set of tubes 136B are fluidically connected with the first open ends of the third set of tubes 138A though a second intermediate passage 148 (shown in FIG. 8 ) at the first manifold 110.
  • a first diverter plate 116 disposed between the first header plate 112 and the first cover 114 of the first manifold 110.
  • the first diverter plate 116 fluidically connects the first open ends of the second set of tubes 136B and the third set of tubes 138A.
  • the first diverter plate 116 includes plurality of horizontal orifices 118 extending across the first open ends of the second set of tubes 136B and the third set of tubes 138A.
  • the second portion 110B includes the at least inlet channels 120A, 120B and the at least two outlet channels 122A, 122B.
  • the first open ends of the first set of tubes 136A may be fluidically connected with the inlet channels 120A, 120B and the first open ends of the fourth set of tubes 138B fluidically connects with the outlet channels 122A, 122B.
  • the first portion 110A may be an upper portion of the first manifold 110 and the second portion 110B may be a lower portion of the first manifold 110.
  • the first portion 110A may be a lower portion of the first manifold 110 and the second portion 110B may be the upper portion of the first manifold 110.
  • the first portion 110A and the second portion 110B are fluidly insulated from each other.
  • the first diverter plate 116 is provided to partition the first portion 110A and the second portion 110B at substantial centres thereof.
  • FIG. 5 illustrates a cross-section of the first cover 114 of the first manifold 110 showing the inlet channels 120A, 120B and the outlet channels 122A, 122B.
  • the inlet channels 120A, 120B and the outlet channels 122A, 122B may extend along a length of the first cover 114. The length is a measure of length between opposing edges 114a, 114b of first cover 114, shown in FIG. 4 and 5 .
  • the inlet channels 120A, 120B include a first inlet channel 120A and a second inlet channel 120B.
  • the inlet channels 120A, 120B run at least a portion of length of the first cover 114 of the first manifold 110.
  • the inlet channels 120A, 120B run along the entire length of the first cover 114 of the first manifold 110. Further, in this example, the first inlet channel 120A and the second inlet channel 120B are formed separately from one another. In another example, the first inlet channel 120A may be in fluid communication with the second inlet channel 120B. In yet another example, the first inlet channel 120A may be fluidly insulated from the second inlet channel 120B. Further, in one example, the first inlet channel 120A and the second inlet channel 120B may have the same cross section. In another example, the first inlet channel 120A may have different cross section than the second inlet channel 120B.
  • first inlet channel 120A and second inlet channel 120B may have the variable cross-sectional area.
  • first inlet channel 120A and the second inlet channel 120B may have a cross section successively diminishing along a downstream side of the first fluid entering through the inlet channels 120A, 120B.
  • first inlet channel 120A and the second inlet channel 120B may have a cross section successively increasing along a downstream side of the first fluid entering through the inlet channels 120A, 120B.
  • the outlet channels 122A, 122B run at least a portion of length of the first cover 114 of the first manifold 110.
  • the outlet channels 122A, 122B runs along the entire length of the first cover 114 of the first manifold 110.
  • the first outlet channel 122A and the second outlet channel 122B are formed separately from one another.
  • the first outlet channel 122A may be in fluid communication with the second outlet channel 122B.
  • the first outlet channel 122A may be fluidly insulated from the second outlet channel 122B.
  • the first outlet channel 122A and the second outlet channel 122B may have the same cross section.
  • first outlet channel 122A may have different cross section than the second outlet channel 122B.
  • first outlet channel 122A and second outlet channel 122B may have variable cross-sectional area.
  • first outlet channel 122A and the second outlet channel 122B may have the cross section successively diminishing along an upstream side of the first fluid leaving through the outlet channels 120A, 120B.
  • first outlet channel 122A and the second outlet channel 122B may have the cross section successively increasing along the upstream side of the first fluid leaving through the outlet channels 120A, 120B.
  • the second manifold 124 fluidly communicates with an opposing second open ends of the first set of tubes 136A, second set of tubes 136B, a third set of tubes 138A and the fourth set of tubes 138B.
  • the second manifold 124 may comprise a second diverting passage 150 (shown in FIG. 8 ) fluidly connecting the second open ends of the first set of tubes 136A to the second ends of the second set of tubes 136B.
  • the second manifold 124 may further comprise a third diverting passage 152 (shown in FIG. 8 ) fluidically connecting the second open ends of the third set of tubes 138A and the fourth set of tubes 138B.
  • the second manifold 124 may comprise a second diverter plate 128 having a plurality of longitudinal orifices 130.
  • the plurality of longitudinal orifices 130 includes a first set of longitudinal orifices 130A extending across and fluidically connects the second ends of the first set of tubes 136A and second set of tubes 136B.
  • the plurality of longitudinal orifices 130 further comprises a second set of longitudinal orifices 130B extending across and fluidically connects the second ends of the third set of tubes 138A and the fourth set of tubes 138B.
  • the first set of longitudinal orifices 130A may define the second diverting passage 150
  • the second set of longitudinal orifices 130B may define the third diverting passage 152.
  • the refrigerant provided though the first inlet port 106A passes through the inlet channels 120A, 120B.
  • the refrigerant flows through the first set of tubes 136A, in a first direction A, represented by arrow A, from the inlet channels 120A, 120B towards the second manifold 124, which defines the first pass or the first fluid path 140.
  • the refrigerant flows through the second set of tubes 136B, in a second direction B, represented by arrow B, from the second manifold 124 to the first manifold 110.
  • the first diverting passage 148 at the second manifold 124 defined by the first set of longitudinal orifices 130A directs the refrigerant from the first set of tubes 136A to the second set of tubes 136B. Further, the first set of longitudinal orifices 130A uniformly distributes refrigerant in the second set of tubes 136B.
  • the refrigerant flows through the third set of tubes 138A, in the first direction A, from the second manifold 124 to the first manifold 110, which defines third pass or the third flow path 144.
  • the second diverting passage 150 at the first manifold 110 defined by the set of horizontal orifices 118 of the first diverter plate 116 directs the refrigerant from the second set of tubes 136B to the third set of tubes 138A. Further, the set of horizontal orifices 118 of the first diverter plate 116 uniformly distributes refrigerant in the third set of tubes 138A.
  • the refrigerant flows through the fourth set of tubes 138B in the second direction B from the second manifold 124 to the first manifold 110, which defines the fourth pass or the fourth flow path 146.
  • the third diverting passage 152 at the second manifold 124 defined by the second set of longitudinal orifices 130B directs the fluid from the third set of tubes 138A to the fourth set of tubes 138B.
  • the refrigerant reach the first outlet port 106B via the outlet channels 122A, 122B in communication with the fourth set of tubes 138B.
  • the coolant flows from the second inlet port 108A and flows around the heat exchange tubes 134 and exits via the second outlet port 108B.
  • the second set of longitudinal orifices 130B of the second diverter plate 128 uniformly distributes refrigerant in the fourth set of tubes 138B.
  • the refrigerant is distributed through a four-pass flow inside the heat exchanger core, represented by structure 800.
  • the first fluid for example, the refrigerant flows from the inlet channels 120A, 120B to the outlet channels 122A, 122B passing through a series of the first flow path 140, the first diverting passage 148, the second flow path 142, the second diverting passage 150, the third flow path 144, the third diverting passage 152.
  • the flow direction of the fluid in succeeding flow path 142, 144, 146 is reversed with respect to the preceding flow path 140, 142, 144.
  • the second flow path 142, the third flow path 144 and the fourth flow path 146 are succeeding to the first flow path 140, the second flow path 142 and the third flow path 144, respectively.
  • first flow path 140 and the second flow path 142 together forms a first U - flow path
  • second flow path 142 and the third flow path 144 together forms a second U-flow path
  • third flow path 144 and the fourth flow path 146 together forms a third U-flow path.
  • the heat exchanger 100 provides at least three U-flow paths. Together, the three-U-flow paths provide a longer flow path for the flow of the refrigerant, which increases the time of the first fluid in heat exchange configuration with the second fluid and increases the heat transfer efficiency.
  • the two inlet channels 120A, 120B, the outlet channels 122A, 122B, the first diverter plate 116 and second diverter plate 128 uniformly distributes the refrigerant within the heat exchange tubes 134 and without increasing the pressure drop. As the refrigerant uniformly distributed across the heat exchange tubes 134, thermal efficiency of the heat exchanger 100 is increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP21213845.7A 2021-12-10 2021-12-10 Échangeur de chaleur Pending EP4194787A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21213845.7A EP4194787A1 (fr) 2021-12-10 2021-12-10 Échangeur de chaleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21213845.7A EP4194787A1 (fr) 2021-12-10 2021-12-10 Échangeur de chaleur

Publications (1)

Publication Number Publication Date
EP4194787A1 true EP4194787A1 (fr) 2023-06-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21213845.7A Pending EP4194787A1 (fr) 2021-12-10 2021-12-10 Échangeur de chaleur

Country Status (1)

Country Link
EP (1) EP4194787A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005040710A1 (fr) * 2003-10-29 2005-05-06 Showa Denko K.K. Echangeur de chaleur
WO2005124259A1 (fr) * 2004-06-15 2005-12-29 Showa Denko K.K. Echangeur de chaleur
EP3872435A1 (fr) * 2020-02-28 2021-09-01 Valeo Autosystemy SP. Z.O.O. Échangeur de chaleur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005040710A1 (fr) * 2003-10-29 2005-05-06 Showa Denko K.K. Echangeur de chaleur
WO2005124259A1 (fr) * 2004-06-15 2005-12-29 Showa Denko K.K. Echangeur de chaleur
EP3872435A1 (fr) * 2020-02-28 2021-09-01 Valeo Autosystemy SP. Z.O.O. Échangeur de chaleur

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