EP3534100A1 - Wärmetauscher - Google Patents

Wärmetauscher Download PDF

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Publication number
EP3534100A1
EP3534100A1 EP18461524.3A EP18461524A EP3534100A1 EP 3534100 A1 EP3534100 A1 EP 3534100A1 EP 18461524 A EP18461524 A EP 18461524A EP 3534100 A1 EP3534100 A1 EP 3534100A1
Authority
EP
European Patent Office
Prior art keywords
conduit
fluid
heat exchanger
reduced thickness
exchanger according
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Withdrawn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
EP18461524.3A
Other languages
English (en)
French (fr)
Inventor
Grzegorz Romanski
Maciej PEDRAS
Aleksandra STRYJEWSKA
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 EP18461524.3A priority Critical patent/EP3534100A1/de
Publication of EP3534100A1 publication Critical patent/EP3534100A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/12—Safety or protection arrangements; Arrangements for preventing malfunction for preventing overpressure

Definitions

  • the second conduit is formed by a housing 20.
  • the fuse element is a wall portion 31 with an area outlined by sections 32 of a reduced thickness.
  • the sections 32 of reduced thickness define a flap with at least one hinge 33 constituted by a section of non-reduced thickness.
  • At least one section 32 of the reduced thickness forms a groove 34 on the inner side A of the second conduit.
  • At least one section 32 of the reduced thickness forms a groove 34 on the outer B side of the second conduit.
  • the first conduit comprises two manifolds 11, 12 connected by tubes 13.
  • Manifold 11 has connecting inlet and outlet pipes 14, 15, through which the first fluid enters and exits the heat exchanger 1 after traversing the tubes 13.
  • the heat exchanger 1 comprises the second conduit, which is constituted by a housing 20.
  • This housing 20 encompasses the manifolds 11, 12 and the tubes 13.
  • the housing 20 also comprises inlet and outlet pipes 21, 22, through which the second fluid enters and exits the heat exchanger 1.
  • the housing 20 serves as guiding means for the second fluid and is arranged so that the second fluid flows between the tubes 13 and manifolds 11, 12, thereby enabling heat exchange with the first fluid.
  • Fig. 2 presents a heat exchanger 1 with a safety device according to the invention.
  • the safety device is adapted to enable flow of fluids between the inner A and outer B sides of the second conduit (sides being indicated in Fig. 1 ). In particular, it is adapted to enable such flow within a selected section where the first conduit is encompassed by the second conduit in a fluid-tight manner. This flow occurs however only if a set pressure difference between the inner A and outer B side of the second conduit is exceeded. In other words, if there is a leak in the first conduit, which is located within the second conduit, the first fluid will enter the second conduit. The pressure in the second conduit will increase, so that the pressure difference between the inner A side of the second conduit and the outer B side of the second conduit will consequently also increase.
  • the second conduit is formed by a housing 20.
  • the safety device 30 can comprise a fuse element of locally deliberately reduced mechanical resistance to pressure. It can be for example a portion of reduced thickness. As the thickness of the wall is associated with resistance to pressure, in case of excessive pressure this portion will burst, i.e. create an opening of a pre-defined shape, and enable flow of the fluid. To limit the possibility of creating projectiles out of housing material, this portion is preferably relatively of small dimensions and simple shapes, such as a disk or the like. Housing 20 can be made of plastic or of metal.
  • the fuse element can be carried out in form of a wall portion 31 of non-reduced thickness, the area of which is outlined by sections 32 of reduced thickness.
  • the sections 32 of reduced thickness outline the general shape of the wall portion 31.
  • the wall will break along lined sections in a predictable manner.
  • the general shape of wall portions 31 can be round, rectangular, trapezoidal, triangular etc.
  • the wall portion 31 may be generally outlined by sections 32 of reduced thickness, whereas these sections 32 may be intersected by portions of non-reduced thickness. These portions form hinges 33, rupturing of which will be either hindered or prevented in the above-described scenario, depending on thickness selection and desired outcome.
  • the sections of reduced thickness define a flap with at least one hinge constituted by a section of non-reduced thickness. Consequently, the wall portion 31 can be prevented from separation in case of bursting. This will reduce the possible damage.
  • Figs. 4a-4b show examples of operation of the flap.
  • Fig. 4a shows a flap with a hinge before and after opening, wherein the hinge is of non-reduced thickness.
  • Fig. 4b shows a situation in which the flap opened and hinges on a portion of reduced thickness - this may be an intentional design resulting from a selected shape and localization of the safety device.
  • the sections of reduced thickness can in fact have varying thickness, for example selected sections have a first thickness and other sections have a second thickness, which is different from the first thickness, and which still differs from sections of non-reduced thickness.
  • different level of thickness reduction can be present within the safety device. This may improve hinging action or provide rupturing in a precisely defined manner.
  • Fig. 5a-5j present different embodiments of the invention.
  • the wall portion of locally reduced thickness forms a groove or plurality of grooves of selected cross-section shapes and placement.
  • the grooves can run in a single row, or there can be multiple rows of the same or similar grooves located next to each other.
  • Fig. 5a shows pairs of trapezoidal grooves located on both sides of the wall.
  • Fig. 5b shows pairs of rectangular grooves located on both sides of the wall.
  • Fig. 5c shows pairs of triangular grooves located on both sides of the wall.
  • Fig. 5f and Fig. 5g show yet another example of groove configuration, in which a single groove is located on each side of the wall, wherein said groove is relatively wide.
  • Fig. 5f shows a circular groove and
  • Fig. 5g shows an oblong groove.
  • Fig. 5h shows an example of a single groove with trapezoidal cross-section.
  • Fig. 5i shows an example of a single groove with triangular cross-section.
  • Fig. 5j shows an example of a single groove with oblong cross-section.

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)
EP18461524.3A 2018-02-28 2018-02-28 Wärmetauscher Withdrawn EP3534100A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18461524.3A EP3534100A1 (de) 2018-02-28 2018-02-28 Wärmetauscher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18461524.3A EP3534100A1 (de) 2018-02-28 2018-02-28 Wärmetauscher

Publications (1)

Publication Number Publication Date
EP3534100A1 true EP3534100A1 (de) 2019-09-04

Family

ID=61526764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18461524.3A Withdrawn EP3534100A1 (de) 2018-02-28 2018-02-28 Wärmetauscher

Country Status (1)

Country Link
EP (1) EP3534100A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167968A (en) * 1977-12-30 1979-09-18 Babcock-Brown Boveri Reaktor Gmbh Pressure vessel
FR2750483A1 (fr) * 1996-06-27 1998-01-02 Valeo Climatizzazione Spa Radiateur a securite amelioree pour le chauffage de l'habitacle d'un vehicule automobile
FR2808320A1 (fr) * 2000-04-27 2001-11-02 Valeo Thermique Moteur Sa Echangeur de chaleur a haute pression pour circuit de climatisation, notamment de vehicule automobile
US20150267967A1 (en) * 2014-03-18 2015-09-24 Basf Se Heat exchanger, reactor arrangement comprising this heat exchanger and method for controlling the temperature of a reactor
US20170356701A1 (en) * 2016-06-13 2017-12-14 Chevron U.S.A. Inc. Apparatus, systems and methods for protection against high pressure gas intrusion in shell and tube heat exchangers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167968A (en) * 1977-12-30 1979-09-18 Babcock-Brown Boveri Reaktor Gmbh Pressure vessel
FR2750483A1 (fr) * 1996-06-27 1998-01-02 Valeo Climatizzazione Spa Radiateur a securite amelioree pour le chauffage de l'habitacle d'un vehicule automobile
FR2808320A1 (fr) * 2000-04-27 2001-11-02 Valeo Thermique Moteur Sa Echangeur de chaleur a haute pression pour circuit de climatisation, notamment de vehicule automobile
US20150267967A1 (en) * 2014-03-18 2015-09-24 Basf Se Heat exchanger, reactor arrangement comprising this heat exchanger and method for controlling the temperature of a reactor
US20170356701A1 (en) * 2016-06-13 2017-12-14 Chevron U.S.A. Inc. Apparatus, systems and methods for protection against high pressure gas intrusion in shell and tube heat exchangers

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