EP1793192A1 - Plate heat exchanger - Google Patents

Plate heat exchanger Download PDF

Info

Publication number
EP1793192A1
EP1793192A1 EP20050026404 EP05026404A EP1793192A1 EP 1793192 A1 EP1793192 A1 EP 1793192A1 EP 20050026404 EP20050026404 EP 20050026404 EP 05026404 A EP05026404 A EP 05026404A EP 1793192 A1 EP1793192 A1 EP 1793192A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
header
block
angle
plate heat
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Withdrawn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
EP20050026404
Other languages
German (de)
French (fr)
Inventor
Herbert Aigner
Gabriele Dr. Engl
Thomas Hecht
Stefan Möller
Wolfgang Süssmann
Alfred Dr. Wanner
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.)
Linde AG
Original Assignee
Linde AG
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 Linde AG filed Critical Linde AG
Priority to EP20050026404 priority Critical patent/EP1793192A1/en
Priority claimed from EP06023933A external-priority patent/EP1793193A3/en
Publication of EP1793192A1 publication Critical patent/EP1793192A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0037Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F9/0243Header boxes having a circular cross-section

Abstract

The heat exchanger has a header (2) that is attached to a heat exchanger block (1) and that produces a flow connection between a part of heat exchanger passages and a fluid supply. The length of the header extends over a part of a side of the block. A wall (7) of the header is connected with the side of the block. The side of the block and a section of the wall form an exterior angle (8), which is smaller than 90 degrees. The header has a cross section in the form of a circle segment with an aperture angle (6) of more than 180 degrees.

Description

  • The invention relates to a plate heat exchanger according to the preamble of patent claim 1.
  • The construction of a plate heat exchanger is " The Standards of the Brazed Aluminum Plate-Fin Heat Exchanger Manufacturers' Association, ALPEMA, Second Edition, 2000 known.
  • The heat exchanger block of a plate heat exchanger consists of several layers of heat exchange passages, which are each delimited by separating plates against each other. End strips and cover plates form the outer frame of the heat exchanger block. Within a layer, further separating strips can be provided which separate heat exchange passages for different material flows from one another.
  • The initially made of loose components heat exchanger block is then soldered in a brazing furnace, so that all components are sealed together. Subsequently, headers are welded over the inlet and outlet openings of the heat exchange passages, which are provided with a fluid connection. As headers are usually used semi-cylindrical shells, but may also have other shapes. The walls of the header typically form an outside angle of 90 ° with the corresponding side of the block (see, for example, "The Standards of the Brazed Aluminum Plate-Fin Heat Exchanger Manufacturers' Association, ALPEMA," Second Edition, 2000, FIG. 5). A "fluid port" serves to supply or discharge fluid into or out of the header. It is usually formed by a pipe socket, which are arranged in the half-cylinder jacket of the header opposite the inlet and outlet openings; At these pipe sockets, the pipes for the incoming and outgoing fluid flows are connected. Alternatively, the fluid port or the one substantially perpendicular to the side of the heat exchanger block may be arranged, for example, the connection tube then continues the header beyond the edge of the block (see FIG EP 1452817 A1 = US 2005006076 A1 ) over which the header extends.
  • By means of a suitable arrangement of separating strips, plate heat exchangers can be used for the simultaneous heat exchange of many fluid streams. For each of the fluid streams, appropriate headers are then to be attached above the respective inlet and outlet openings of the heat exchange passages and provided with pipelines (see, for example, "US Pat. The Standards of the Brazed Aluminum Plate-Fin Heat Exchanger Manufacturers' Association, ALPEMA, Second Edition, 2000 , Figure 1-1).
  • The term "side" of a heat exchanger block is to be understood geometrically, that is, it is a flat surface of the heat exchanger block, which is generally cuboid.
  • Frequently occur in such headers relatively high flow velocities and cause a high pressure drop and / or a misallocation of the fluid to the individual passages.
  • The invention has for its object to improve the flow characteristics within the header.
  • This object is achieved in that the side of the heat exchanger block and at least a portion of the wall of the header form an outer angle which is smaller than 90 °.
  • "Outside angle" is understood to mean the angle outside the header. In the event that the relevant wall portion of the header is accurately connected to the edge of the block, this outer angle is formed by the angle of the wall with the imaginary continuation of the block side beyond this edge.
  • The non-perpendicular connection of the header wall to the block side causes the flow area in the header to be increased without having to increase its base area facing the heat exchanger block. Thus, an improved flow characteristic is achieved inside the header, which in turn causes a reduced pressure loss and a more uniform distribution of the fluid to the passages.
  • For example, according to the invention, more than half of a cylinder jacket is used as a header instead of a half cylinder. If you move the cylinder axis of the header from the side of the heat exchanger with a constant diameter by about 10% of the cylinder diameter, the pressure loss can be reduced by about 35%. This advantage is achieved even with the same nominal size of the header (ie the same connection dimensions and the same wall thickness) and even reduced footprint. In addition, this eccentricity can be varied continuously. In contrast to the variation of the nominal size, which is possible only in larger jumps, the flow cross-section of the header can thus specifically adapted to the particular application and in particular a misallocation can be efficiently avoided.
  • However, the invention can also be applied to other types of headers, for example those with an oval, asymmetrical and / or angular cross-section.
  • The outer angle is preferably 87 ° or less, in particular 81 ° or less, in particular 75 ° or less and is at least equal to 40 °, in particular at least equal to 55 °, in particular at least equal to 65 °.
  • In the case of a header formed at least in sections in the form of a cylinder jacket segment, the invention is realized in that the header over a part of its length or over its entire length has a cross section in the form of a circle segment with an opening angle of more than 180 °.
  • The invention and further details of the invention are explained below with reference to embodiments schematically illustrated in the drawings. Hereby show:
  • Figures 1 and 2
    a first embodiment of an inventively designed plate heat exchanger with lateral connection in two rotated by 90 ° to each other side views and
    FIGS. 3 and 4
    a second embodiment with central connection.
  • In the figures, only the parts important for the explanation of the invention are shown, the cuboid heat exchanger block 1, according to the invention configured header 2, the fluid port 3 and the subsequent piping 4. The illustrated header can serve as an inlet or outlet for a fluid. Of course, the plate heat exchanger according to the invention further headers. These may be conventional or just like the header shown. Any mixture between inventive and conventional headers is possible within the scope of the invention.
  • The header 2 is arranged on the side 5 of the block 1 and formed in the form of a cylinder jacket segment with an opening angle 6 of more than 180 °, for example about 200 °. The wall 7 of the header 2 forms an outer angle 8 with the side 5. (In order to make the outer angle visible, a tangent surface 9 of the header wall 7 is shown in FIG. 2). The cylinders
  • The two embodiments differ by the orientation of the fluid port 3. In Figure 1, the fluid port 3 is oriented perpendicular to the side 5 of the block 1. The fluid thus flows through the pipeline 4 parallel to the side 5 or from. In particular, if it is a supply line, located in the pipe 4, a baffle 10, as in the older German patent application 102005055676.0 (internal file number of the applicant: P05271-DE / AVA, filing date: 22.11.2005) and the corresponding applications. The baffle is not arranged in the present case on the cylinder axis of the pipeline, but at a distance 11 to this. The pipeline 4 has a cylindrical shape and continues to the left (not shown in FIG. 1).
  • In contrast, in the variant of FIGS. 3 and 4, the fluid connection 3 is aligned parallel to the side 5. The fluid flows in the drawings in the vertical direction through the pipe 4 to or from.

Claims (4)

  1. A plate heat exchanger having a heat exchanger block (1) having a plurality of heat exchange passages and a header (2) attached to the heat exchanger block providing flow communication between a portion of the heat exchange passages and a fluid port (3), the length of the header extending over at least a part of a side (5) of the heat exchanger block extends and at least one wall (7) of the header to the side (5) of the heat exchanger block is connected, characterized in that the side (5) of the heat exchanger block (1) and at least a portion of the wall (7) of the header (2) form an outer angle (8) which is smaller than 90 °.
  2. Plate heat exchanger according to claim 1, characterized in that the outer angle (8) is 87 ° or less, in particular 81 ° or less, in particular 75 ° or less.
  3. Plate heat exchanger according to claim 1 or 2, characterized in that the outer angle (8) is at least 40 °, in particular at least 55 °, in particular at least 65 °.
  4. Plate heat exchanger according to one of claims 1 to 3, characterized in that the header (2) over a part of its length or over its entire length has a cross section in the form of a circle segment with an opening angle (6) of more than 180 °.
EP20050026404 2005-12-02 2005-12-02 Plate heat exchanger Withdrawn EP1793192A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20050026404 EP1793192A1 (en) 2005-12-02 2005-12-02 Plate heat exchanger

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP20050026404 EP1793192A1 (en) 2005-12-02 2005-12-02 Plate heat exchanger
EP06023933A EP1793193A3 (en) 2005-12-02 2006-11-17 Plate heat exchanger
CNA2006101604610A CN1982833A (en) 2005-12-02 2006-11-28 Plate heat exchanger
JP2006322080A JP2007155317A (en) 2005-12-02 2006-11-29 Plate heat exchanger
US11/607,094 US20070137844A1 (en) 2005-12-02 2006-12-01 Plate heat exchanger

Publications (1)

Publication Number Publication Date
EP1793192A1 true EP1793192A1 (en) 2007-06-06

Family

ID=36201488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050026404 Withdrawn EP1793192A1 (en) 2005-12-02 2005-12-02 Plate heat exchanger

Country Status (4)

Country Link
US (1) US20070137844A1 (en)
EP (1) EP1793192A1 (en)
JP (1) JP2007155317A (en)
CN (1) CN1982833A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267905A (en) * 1939-12-04 1941-12-30 Frantz Peter Heating apparatus
US4569391A (en) * 1984-07-16 1986-02-11 Harsco Corporation Compact heat exchanger
US20030182785A1 (en) * 2002-03-28 2003-10-02 Harkins Bruce David Method for attaching an air duct to a recuperator core

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US828807A (en) * 1904-11-02 1906-08-14 Andrew Bolton Apparatus for superheating steam.
US2602647A (en) * 1951-03-30 1952-07-08 Standard Oil Co Tubular contactor with conical distribution plate
US2875986A (en) * 1957-04-12 1959-03-03 Ferrotherm Company Heat exchanger
US3216495A (en) * 1963-08-07 1965-11-09 Gen Motors Corp Stacked plate regenerators
US3255818A (en) * 1964-03-09 1966-06-14 Gen Motors Corp Involute plate heat exchanger
DE2222269C2 (en) * 1972-05-06 1984-05-24 Kobe Steel, Ltd., Kobe, Hyogo, Jp
US4310960A (en) * 1973-04-16 1982-01-19 The Garrett Corporation Method of fabrication of a formed plate, counterflow fluid heat exchanger and apparatus thereof
US3852166A (en) * 1973-07-20 1974-12-03 Johnson & Co Inc A Process for separating hydrocarbon materials
US4276927A (en) * 1979-06-04 1981-07-07 The Trane Company Plate type heat exchanger
FI79409C (en) * 1987-07-13 1989-12-11 Pentti Raunio Method for constructing a heat exchanger and according to method t designed heat exchanger.
FR2665755B1 (en) * 1990-08-07 1993-06-18 Air Liquide Nitrogen production apparatus.
US5261485A (en) * 1991-08-21 1993-11-16 Hpd, Incorporated Slurry distributor
TW216453B (en) * 1992-07-08 1993-11-21 Air Prod & Chem Integrated plate-fin heat exchange reformation
US5775412A (en) * 1996-01-11 1998-07-07 Gidding Engineering, Inc. High pressure dense heat transfer area heat exchanger
US6267176B1 (en) * 2000-02-11 2001-07-31 Honeywell International Inc. Weld-free heat exchanger assembly
SE523519C2 (en) * 2001-03-27 2004-04-27 Rekuperator Svenska Ab Plate heat exchanger device and method for manufacturing the same
CN100488661C (en) * 2003-02-25 2009-05-20 林德股份公司 Plate type heat exchanger
JP2004257728A (en) * 2003-02-25 2004-09-16 Linde Ag Plate type heat exchanger

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267905A (en) * 1939-12-04 1941-12-30 Frantz Peter Heating apparatus
US4569391A (en) * 1984-07-16 1986-02-11 Harsco Corporation Compact heat exchanger
US20030182785A1 (en) * 2002-03-28 2003-10-02 Harkins Bruce David Method for attaching an air duct to a recuperator core

Also Published As

Publication number Publication date
JP2007155317A (en) 2007-06-21
CN1982833A (en) 2007-06-20
US20070137844A1 (en) 2007-06-21

Similar Documents

Publication Publication Date Title
JP6462026B2 (en) Heat exchanger with branching unit cell
US9732702B2 (en) Heat exchanger for aircraft engine
US10852075B2 (en) Refrigerant distributor of micro-channel heat exchanger
EP2581696B1 (en) Heat exchanger and partition thereof
CA2596328C (en) Tube insert and bi-flow arrangement for a header of a heat pump
EP0608439B2 (en) Heat exchanger with improved condensate collection
CN101629769B (en) Non-cylindrical refrigerant conduit and a method of making same
US8550153B2 (en) Heat exchanger and method of operating the same
US9267740B2 (en) Manifold fluid communication plate
AU2008323157B2 (en) Distribution pipe
EP0529819B1 (en) Heat exchanger
EP1869391B1 (en) Plate heat exchanger
US8171987B2 (en) Minichannel heat exchanger header insert for distribution
EP2362176B1 (en) Micro-channel heat exchanger with adjustable distribution pipe
DE19721132C2 (en) Exhaust gas cooling device
US5137082A (en) Plate-type refrigerant evaporator
US6216776B1 (en) Heat exchanger
EP2283297B1 (en) Heat exchanger
US6892803B2 (en) High pressure heat exchanger
US5875837A (en) Liquid cooled two phase heat exchanger
EP2079974B1 (en) Method and apparatus for improving distribution of fluid in a heat exchanger
EP1391675B1 (en) Multitubular heat exchanger
EP0481871B1 (en) Flange for the connection of the inlet and outlet tubes of an evaporator
US20050145380A1 (en) Heat transfer pipe and heat exchange incorporating such heat transfer pipe
US7819177B2 (en) Heat exchanger assembly

Legal Events

Date Code Title Description
AX Extension of the european patent to

Countries concerned: ALBAHRMKYU

AK Designated contracting states:

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AKX Payment of designation fees
18D Deemed to be withdrawn

Effective date: 20071207

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566