EP4177557A1 - Dispositif de transfert de chaleur - Google Patents

Dispositif de transfert de chaleur Download PDF

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Publication number
EP4177557A1
EP4177557A1 EP22204727.6A EP22204727A EP4177557A1 EP 4177557 A1 EP4177557 A1 EP 4177557A1 EP 22204727 A EP22204727 A EP 22204727A EP 4177557 A1 EP4177557 A1 EP 4177557A1
Authority
EP
European Patent Office
Prior art keywords
heat transfer
fluid
transfer device
distribution
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.)
Pending
Application number
EP22204727.6A
Other languages
German (de)
English (en)
Inventor
Ulrich Hafner
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.)
Viessmann Climate Solutions SE
Original Assignee
Viessmann Climate Solutions SE
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 Viessmann Climate Solutions SE filed Critical Viessmann Climate Solutions SE
Publication of EP4177557A1 publication Critical patent/EP4177557A1/fr
Pending 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0278—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of stacked distribution plates or perforated plates arranged over end 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
    • 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
    • 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
    • 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
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • 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
    • F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
    • 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
    • F28F1/14—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 and extending longitudinally
    • F28F1/16—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 and extending longitudinally the means being integral with the element, e.g. formed by extrusion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
    • F28F9/0275—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple branch pipes
    • 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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • 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
    • F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
    • 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
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • 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
    • F28F2009/0297—Side headers, e.g. for radiators having conduits laterally connected to common header
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing

Definitions

  • the invention relates to a heat transfer device according to the preamble of patent claim 1.
  • a heat transfer device of the type mentioned is generally known (see, for example, https://www.zpm-systeme.de/wp-content/uploads/2017/04/bean effet_waerme- (2004)er_manual_heat_exchangers.pdf - there page 13).
  • Such a heat transfer device consists of a first flow guide for a first fluid and a second flow guide for a second fluid which is in heat-transferring contact with the first, the first flow guide having a large number of line sections which are arranged parallel to one another and conduct the first fluid vertically, the second flow guide has a space surrounding the line pieces and vertically conducting the second fluid, a first distribution device being provided for supplying the first fluid to the line pieces and a second distribution device for removing the first fluid from the line pieces.
  • the term “fluid” is to be understood as meaning an optionally gaseous or liquid medium. In the aforementioned solution, both fluids are one liquid.
  • a heat transfer device according to the preamble of claim 1 is from document U.S. 4,235,281A known.
  • the object of the invention is to improve a heat transfer device of the type mentioned at the outset.
  • the line sections have a rectangular internal flow cross section.
  • the solution according to the invention is characterized, which will be explained in more detail below, in that the cross section through which both fluids flow is optimally utilized.
  • the heat transfer device shown in the figures initially consists, in a known manner, of a first flow guide 1 for a first fluid and a second flow guide 2 for a second fluid, which is in heat-transferring contact with the first, the first flow guide 1 having a plurality of mutually parallel, line pieces 1.1 that conduct the first fluid vertically, with the second flow guide 2 having a space 2.1 that bypasses line pieces 1.1 and conducts the second fluid vertically, with a first distribution device 3.1 for supplying the first fluid to the line pieces 1.1 and a second distribution device 3.2 for discharge of the first fluid is provided by the line sections 1.1, with a plurality of flow openings 3.3 connected to the space 2.1 being provided for the second fluid on the two distribution devices 3.1, 3.2.
  • the line sections 1.1 have a rectangular internal flow cross section. There are within the rectangular internal flow cross-section of the line pieces 1.1 preferably transverse ribs 1.1.2 arranged, see figure 3 .
  • the distribution devices 3.1, 3.2 (here and in the following: both, in principle, as claimed: "at least one"), seen in the main flow direction of the second fluid, are many times shorter, at least a factor of 4, than in the direction of extension in one Plane are formed perpendicular to the main flow direction of the second fluid.
  • the distribution devices 3.1, 3.2 have a multiplicity of distribution channels 3.4 for the first fluid.
  • the through-flow openings 3.3 and the distribution channels 3.4 are preferably arranged alternately with one another. It is also preferred that the through-flow openings 3.3 and/or the distribution channels 3.4 are optionally arranged along the circumference of imaginary rectangles, in particular squares, arranged concentrically to one another.
  • the distribution devices 3.1, 3.2 are designed in two parts.
  • the distribution devices 3.1, 3.2 are preferably formed from a base body 3.5 delimiting the distribution channels 3.4 on at least three sides and a cover element 3.6 delimiting the distribution channels 3.4 on one side, see FIG figure 2 .
  • the distribution devices 3.1, 3.2 each have webs on their mutually facing sides for delimiting an insertion opening for the line pieces 1.1.
  • each flow opening 3.3 has at least two parallel wall sections 3.3.1, 3.3.2, see figure 4 .
  • longer sides of the rectangular internal flow cross-sections are designed to run parallel to the (aforementioned) wall sections 3.3.1, 3.3.2 of a through-flow opening 3.3.
  • the line sections 1.1 it is preferable for the line sections 1.1 to be designed so that they can be inserted into the two distribution devices 3.1, 3.2, preferably their base body 3.5, for installation. In addition, it is preferred that the line sections 1.1 are produced as extruded profiles. It is also preferred that the line pieces 1.1 preferably have vertically extending heat transfer ribs 1.1.1 on a side facing the second flow guide 2, the outer cross section of the line pieces 1.1 preferably and in principle, i.e. without the heat transfer ribs 1.1.1 being considered - as well as the flow inner cross sections - is rectangular.
  • the first distribution device 3.1 is optionally arranged below the second distribution device 3.2 when used as an evaporator in heating mode or above the second distribution device 3.2 when used as a condenser in cooling mode when the heat transfer device is used as intended.
  • the first fluid it is preferable for the first fluid to flow in a first main flow direction through the line pieces 1.1 and for the second fluid to flow in a second main flow direction, opposite to the first, through the conductive space 2.1.
  • the heat transfer device has a first supply and a first discharge connection for the first fluid, through which the first fluid is supplied perpendicularly to the first main flow direction of the first distribution device 3.1 or from the second distribution device 3.2 is discharged.
  • the heat transfer device has a second supply and a second discharge connection for the second fluid, through which the second fluid is fed parallel to the second main flow direction of the second flow guide 2 and discharged from it.
  • the first fluid is optionally all liquid or mixed liquid and gaseous. It is preferred that the first fluid is a refrigerant for a thermodynamic cycle. Furthermore, it is preferred that the second fluid is gaseous, preferably air.
  • the line sections 1.1 are soldered at both ends to a distribution device 3.1, 3.2 in the heating furnace.
  • the assembly of the heat transfer device can be carried out in a simple manner and without a large deployment of personnel.
  • the line pieces 1.1 and/or the distribution devices 3.1, 3.2 are made of aluminum. This enables the heat transfer device to be manufactured inexpensively and reduces its weight.
  • the heat transfer device is designed either as part of a condenser or as part of an evaporator.
  • a drain 4 for condensate or the like is provided at a lower end of the second flow guide 2 when used as intended.
  • the first distribution device 3.1 is preceded by a separating device 5 for gaseous components of the first fluid, see FIG figure 1 .
  • the heat transfer device works as follows: The heat transfer device is first, such as in figure 1 shown oriented in the vertical direction. Then the first fluid is introduced through the first supply connection into the first distribution device 3.1. It is now deflected there by 90° and guided upwards in the line sections 1.1. Finally, the first fluid enters the second distribution device 3.2, is deflected again by 90° and finally conducted out of the heat transfer device through the first discharge connection. At the same time as this process, the second fluid is introduced into the second flow guide 2 from above through the second supply connection. This rectilinear guidance--without detours--of the second fluid causes less turbulence to occur in it and thus also a lower associated pressure loss and less noise generation. It then flows from top to bottom through space 2.1 and then leaves the heat transfer device again through the second discharge connection arranged on its underside.
  • the first and second fluids thus flow antiparallel through the heat transfer device for some distance. While the second fluid flows from top to bottom through the space 2.1, it comes into contact with the heat transfer fins 1.1.1 of the line pieces 1.1. This causes heat to be transferred from the second fluid via these same heat transfer fins 1.1.1 to the first fluid in the power pieces 1.1 (or vice versa).
  • the vertical structure of the heat transfer device prevents an unequal distribution of the first fluid flow to the individual line sections 1.1 due to the effects of gravity and the removal of any condensate in the heat transfer device is facilitated, both of which in turn increase the efficiency of the device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP22204727.6A 2021-11-05 2022-10-31 Dispositif de transfert de chaleur Pending EP4177557A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021128819.3A DE102021128819A1 (de) 2021-11-05 2021-11-05 Wärmeübertragungsvorrichtung

Publications (1)

Publication Number Publication Date
EP4177557A1 true EP4177557A1 (fr) 2023-05-10

Family

ID=84044442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22204727.6A Pending EP4177557A1 (fr) 2021-11-05 2022-10-31 Dispositif de transfert de chaleur

Country Status (2)

Country Link
EP (1) EP4177557A1 (fr)
DE (1) DE102021128819A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE835612C (de) 1950-11-21 1952-04-03 Metallgesellschaft Ag Waermeaustauscher mit Laengsrippenrohren
US4235281A (en) 1978-04-07 1980-11-25 The Boeing Company Condenser/evaporator heat exchange apparatus and method of utilizing the same
US4929798A (en) * 1984-03-05 1990-05-29 Canadian Patents And Development Limited Pseudoadiabatic reactor for exothermal catalytic conversions

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE835612C (de) 1950-11-21 1952-04-03 Metallgesellschaft Ag Waermeaustauscher mit Laengsrippenrohren
US4235281A (en) 1978-04-07 1980-11-25 The Boeing Company Condenser/evaporator heat exchange apparatus and method of utilizing the same
US4929798A (en) * 1984-03-05 1990-05-29 Canadian Patents And Development Limited Pseudoadiabatic reactor for exothermal catalytic conversions

Also Published As

Publication number Publication date
DE102021128819A1 (de) 2023-05-11

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