EP3916332A1 - Wärmetauscher mit drossel - Google Patents

Wärmetauscher mit drossel Download PDF

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Publication number
EP3916332A1
EP3916332A1 EP20461536.3A EP20461536A EP3916332A1 EP 3916332 A1 EP3916332 A1 EP 3916332A1 EP 20461536 A EP20461536 A EP 20461536A EP 3916332 A1 EP3916332 A1 EP 3916332A1
Authority
EP
European Patent Office
Prior art keywords
heat exchange
tank
tubes
exchange tubes
heat exchanger
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Withdrawn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
EP20461536.3A
Other languages
English (en)
French (fr)
Inventor
Piotr Las
Michal WYRWA
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 EP20461536.3A priority Critical patent/EP3916332A1/de
Priority to PCT/EP2021/060045 priority patent/WO2021239329A1/en
Publication of EP3916332A1 publication Critical patent/EP3916332A1/de
Withdrawn legal-status Critical Current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
    • 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
    • F28D1/053—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 the conduits being straight
    • F28D1/0535—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 the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05375—Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction
    • 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
    • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
    • F28F2009/226—Transversal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2270/00—Thermal insulation; Thermal decoupling
    • F28F2270/02—Thermal insulation; Thermal decoupling by using blind conduits

Definitions

  • the present invention relates to a heat exchanger, particularly, a heat exchanger for use in a vehicle.
  • the restrictor includes a pair of baffles disposed inside the first tank between the inlet and the outlet, the pair of baffles prevent fluid communication between the inlet and the corresponding at least one intermediate tube disposed between the pair of baffles and between the outlet and the corresponding at least one intermediate tube.
  • At least one of the baffles is a first blocking element that blocks entry of the heat exchange fluid into the at least one intermediate tube from the first tank, thereby preventing fluid communication between the at least one intermediate tube and the inlet.
  • Such a configuration of the intermediate tubes without any fluid flow there through prevents high temperature gradient that would had existed if the first set of tubes and the second set of tubes are adjacent to each other. By preventing the high temperature gradient, the thermal stresses and problems such as occurrence of cracks and mechanical failure arising due to thermal stresses are prevented.
  • the present invention is explained in the forthcoming description and accompanying drawings with an example of a radiator. However, the present invention is not limited to radiators only and is applicable for any heat exchanger in which the thermal stresses arising due to high thermal gradient between heat exchange tubes due to different temperature fluid flowing there-through is to be prevented.
  • first set of heat exchange tubes 4a and the second set of heat exchange tubes 4b through which different temperature heat exchange fluid flows respectively are adjacent to each other at an interface of the first set of heat exchange tubes 4a and the second set of heat exchange tubes 4a. Accordingly, a large thermal gradient ⁇ t exist between the heat exchange tubes, particularly, at the interface. Also, the heat exchange tubes are subjected to rapid, repetitive change in temperature when flow of the heat exchange fluid through the heat exchange tubes is commenced and stopped as the vehicle is turned ON and OFF respectively.
  • the second set of heat exchange tubes 4b on other side of the baffle 2 though which cooled heat exchange fluid flows is at comparatively lower temperature than the temperature of the first set of heat exchanger tubes 4a. Accordingly, the heat exchange tubes of the first set of heat exchange tubes 4a near the baffle 2 expand/ elongate while the heat exchange tubes of the second set of heat exchange tubes 4b near the baffle 2 contract or are shortened, thereby causing thermal stress and failure.
  • portion of the headers around the apertures for receiving the heat exchange tubes at the interface are also subjected to thermal stresses due to thermal gradient. Such cracks and mechanical failure detrimentally affect the service life of the heat exchanger 1.
  • the cracks and mechanical failure of the heat exchange tubes at the interface may cause leakage of the heat exchange fluid from the tubes, thereby reducing the thermal efficiency and performance of the heat exchanger 1.
  • the temperature of the second set of heat exchange tubes 14b at the interface between the second set of heat exchange tubes 14b and the intermediate tubes 14c is T 2 due to the heat exchange fluid at temperature T 2 flowing there through.
  • the difference in temperature of the heat exchange fluid passing through the first set of heat exchange tubes 14a and the second set of heat exchange tubes 14b is due to the heat exchange fluid rejecting heat to the air surrounding the first set of heat exchange tubes 14a as the heat exchange fluid passes through the first set of heat exchange tubes 14a. Since, the first set of heat exchange tubes 14a receive hot heat exchange fluid to be cooled and the second set of heat exchange tubes 14b receive heat exchange fluid cooled in the first heat exchange tube 14a, the intermediate tubes 14c are at an intermediate temperature T 0 such that T 1 > T 0 > T 2 .
  • the first blocking element 16c closes the first end of the intermediate tubes 14c.
  • the present invention is not limited to any particular configuration, placement and number of the baffles, the first blocking element as far as the baffles, the first blocking element are capable of preventing fluid flow through the intermediate tubes 14c to prevent high temperature gradient between the heat exchange tubes on different sides of each of the baffles 16a and 16b.
  • FIG. 4 illustrates a schematic representation of the heat exchanger 100, wherein a second blocking element 16d prevents the heat exchange fluid collected in the second tank 10b after passing through the first set of heat exchange tube 14a from entering into the intermediate tubes 14c from the second tank 10b. More specifically, the second blocking element 16d blocks entrance to the intermediate tubes 14c from the second tank 10b.
  • the second blocking element 16d is a planar plate disposed orthogonally to the intermediate tubes 14c and secured to second end of the intermediate tubes 14c opposite to first end thereof. More specifically, the second blocking element 16d closes the second end of the intermediate tubes 14c.
  • the present invention is not limited to any particular configuration of the second blocking element 16d as far as the second blocking element is capable of blocking entrance to the intermediate tubes 14c from the second tank 10b.

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)
EP20461536.3A 2020-05-27 2020-05-27 Wärmetauscher mit drossel Withdrawn EP3916332A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20461536.3A EP3916332A1 (de) 2020-05-27 2020-05-27 Wärmetauscher mit drossel
PCT/EP2021/060045 WO2021239329A1 (en) 2020-05-27 2021-04-19 Heat exchanger with restrictor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20461536.3A EP3916332A1 (de) 2020-05-27 2020-05-27 Wärmetauscher mit drossel

Publications (1)

Publication Number Publication Date
EP3916332A1 true EP3916332A1 (de) 2021-12-01

Family

ID=70861431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20461536.3A Withdrawn EP3916332A1 (de) 2020-05-27 2020-05-27 Wärmetauscher mit drossel

Country Status (2)

Country Link
EP (1) EP3916332A1 (de)
WO (1) WO2021239329A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080308264A1 (en) * 2005-08-04 2008-12-18 Dragi Antonijevic Multiple Flow Heat Exchanger
FR2947331A1 (fr) * 2009-06-29 2010-12-31 Valeo Systemes Thermiques Echangeur de chaleur comprenant un faisceau de tubes avec au moins un tube inactif
US20150330683A1 (en) * 2014-05-14 2015-11-19 Delphi Technologies, Inc. Dual circuit refrigerant condenser
EP3246646A1 (de) * 2016-05-20 2017-11-22 Valeo Systemes Thermiques Kühler, insbesondere gaskühler eines kühlsystems
WO2018020136A1 (fr) * 2016-07-29 2018-02-01 Valeo Systemes Thermiques Plaque collectrice pour echangeur de chaleur
US20180292138A1 (en) * 2017-04-05 2018-10-11 Denso Marston Ltd. Manifold for a heat exchanger
US20180363987A1 (en) * 2015-12-10 2018-12-20 Denso Corporation Heat exchanger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080308264A1 (en) * 2005-08-04 2008-12-18 Dragi Antonijevic Multiple Flow Heat Exchanger
FR2947331A1 (fr) * 2009-06-29 2010-12-31 Valeo Systemes Thermiques Echangeur de chaleur comprenant un faisceau de tubes avec au moins un tube inactif
US20150330683A1 (en) * 2014-05-14 2015-11-19 Delphi Technologies, Inc. Dual circuit refrigerant condenser
US20180363987A1 (en) * 2015-12-10 2018-12-20 Denso Corporation Heat exchanger
EP3246646A1 (de) * 2016-05-20 2017-11-22 Valeo Systemes Thermiques Kühler, insbesondere gaskühler eines kühlsystems
WO2018020136A1 (fr) * 2016-07-29 2018-02-01 Valeo Systemes Thermiques Plaque collectrice pour echangeur de chaleur
US20180292138A1 (en) * 2017-04-05 2018-10-11 Denso Marston Ltd. Manifold for a heat exchanger

Also Published As

Publication number Publication date
WO2021239329A1 (en) 2021-12-02

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