EP0504990A1 - Wärmetauscher für Flüssigkeiten - Google Patents

Wärmetauscher für Flüssigkeiten Download PDF

Info

Publication number
EP0504990A1
EP0504990A1 EP92200714A EP92200714A EP0504990A1 EP 0504990 A1 EP0504990 A1 EP 0504990A1 EP 92200714 A EP92200714 A EP 92200714A EP 92200714 A EP92200714 A EP 92200714A EP 0504990 A1 EP0504990 A1 EP 0504990A1
Authority
EP
European Patent Office
Prior art keywords
tubes
casing
fact
fluid
bundle
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Withdrawn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
EP92200714A
Other languages
English (en)
French (fr)
Inventor
Piero Pasqualini
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0504990A1 publication Critical patent/EP0504990A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • F28D7/0041—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 for only one medium being tubes having parts touching each other or tubes assembled in panel form
    • 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
    • F28D7/163—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 with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1638—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 with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing with particular pattern of flow or the heat exchange medium flowing inside the conduits assemblies, e.g. change of flow direction from one conduit assembly to another one
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels

Definitions

  • heat exchangers consisting of first ducts traversed by a first fluid and disposed coaxially inside second ducts, a second fluid flowing through the space between the first and second ducts, thus achieving a high degree of heat exchange between the first and second fluid. It will, however, be obvious to the technician that an embodiment of this kind is expensive and difficult to manufacture. In fact, in order to limit the dimensions of the heat exchanger, the ducts must be bent to form a succession of parallel segments which entails considerable problems in achieving the bends.
  • Heat exchangers have also been proposed in which the coaxial ducts are a plurality of parallel segments provided at the ends with suitable connecting plates to connect both the various internal ducts and the various outer ducts in order to achieve the two separate streams of fluid. These embodiments also involve manufacturing problems due to the complex assembly of a large number of coaxial segments.
  • the general scope of this invention is to obviate the aforementioned problems by providing a heat exchanger of limited structural complexity, weight, overall dimensions and cost, with high heat exchange efficiency and a high degree of structural versatility.
  • a heat exchange device comprising at least one heat exchange element, in turn comprising at least one bundle of parallel tubes traversed by a first fluid and contained in a casing through which flows a second fluid, the tubes opening out into end chambers of the casing, which constitute connections for the inlet and outlet of the first fluid from the bundle of tubes, characterized by the fact that the tubes in said bundle are disposed in the casing closely adjacent to each other and to the walls of the casing and have end portions with a smaller cross section to create manifolds in the casing for the second fluid, into which open out inlets and outlets for the circulation of said second fluid.
  • a heat exchanger according to the invention, generically indicated by reference 10, comprises a casing 11 within which is disposed a first bundle of parallel tubes 12.
  • the tubes have ends which pass through the ends of the container 11 and open out into end chambers defined by airtight covers 13 and 14.
  • the cover 13 defines a first chamber 15 for the common connection of one end of the bundle of tubes 12 to provide a common inlet for a first fluid
  • the cover 14 defines a chamber 17 for the common connection of the other end of the bundle 12 to provide a common outlet for the first fluid from the bundle.
  • the covers 13 and 14 can be either made removable, for example, to allow inspection of the inside of the exchanger, or can be made in one piece with the casing 11, closed by welding or the like.
  • the tubes in the bundle are disposed close together.
  • the tubes can advantageously have a circular cross-section and can be in peripheral contact with each other along generatrices.
  • peripheral portion of the bundle is disposed close to the side walls of the casing, for example in contact with them.
  • the tubes have a smaller cross-section to create manifold areas or chambers 18 and 19 for the inlet and outlet of a second fluid which is made to flow through the casing.
  • the two streams can flow as shown schematically by the broken line for the first fluid in 20 and by the line of dots and dashes in 21. These streams advantageously flow in opposite directions to create a counterflow heat exchanger.
  • the surface of the tubes thus constitutes the heat exchange wall between the fluids.
  • the peripheral contact between the tubes offers the further advantage of preventing the occurrence of vibrations in them caused by the fluid flowing through them.
  • the basic heat exchange element described above can be connected in series to other similar elements to obtain exchange devices with higher performances.
  • the figures show a second bundle of parallel tubes 12' disposed within a shell made in the casing 11 by means of a baffle separating them from the bundle 12.
  • the tubes 12' are disposed and shaped substantially similarly to the tubes 12. Therefore they have ends with smaller cross-sections to define manifold chambers 27 and 28 within the shell.
  • the baffle 22 has an aperture 26 which constitutes a passage between the manifold chamber 18 of the bundle 12 and the adjacent manifold chamber 27 of the bundle 12'.
  • An inlet pipe 25 leads into the manifold chamber 28.
  • the tubes 12' also have ends which pass through the ends of the casing 11 and open out into end chambers defined by the airtight covers 13 and 14.
  • the chamber 17 of the cover 14 provides an interconnecting passage between one end of the bundle of tubes 12' and one end of the bundle 12 for passage of the first fluid.
  • the cover 13 defines a further interconnecting passage 23 for the other end of the bundle 12' to create an outlet for the first fluid through an outlet pipe 24.
  • the first fluid fed into the heat exchange device 10 through the inlet pipe 16 in the cover 13, flows through the first bundle 12, converges in the chamber 17, flows through the bundle 12', into the chamber 23, and hen out of the exchanger through the outlet pipe 24, thus creating a first path for the circulation of the first fluid, as shown by the broken line 20 disposed between the inlet pipe 16 and outlet pipe 24.
  • the second fluid which is fed into the exchanger 10 through the lateral inlet pipe 25, flows through the interspaces between the tubes, converges in the manifold chamber 27, and then flows through the aperture 26 in the baffle 22 and into the manifold chamber 18. From the manifold chamber 18, the fluid then flows through the interspaces parallel to the tubes 12 and into the manifold chamber 19, and then out of the latter through an outlet pipe 29, thus creating a second path for the circulation of the second fluid, as shown by the lines of dots and dashes 21 disposed between the inlet pipe 25 and outlet pipe 29.
  • inlet and outlet pipes 16, 24, 25, 29 will obviously be connected to known types of fluid circulation systems.
  • the mingling which takes place close to the end chambers for the first fluid, and close to the manifold chambers for the second fluid, ensures an even distribution of the temperature of the fluids, without hot spots and pockets.
  • the number of tubes making up each bundle may differ from that shown according to the particular properties of the fluids used and of the exchange of heat to be obtained.
  • the inlet bundle 12 has a smaller number of tubes than the outlet bundle 12', so that the exchanger is particularly suitable for treating fluids which expand considerably in volume during heat exchange.
  • the number of exchange elements disposed in series can be more than two. It will be obvious to the technician that the structure shown can be easily enlarged, either by using elements each with its own casing and connected in series by means of external ducts or by using elements combined together in a single casing with dividing baffles between them and end chambers in common. It is also easy to imagine that separate paths can be obtained for a plurality of first fluids and a plurality of second fluids by the interposition of suitable baffles between the tubes in the bundles.
  • baffles By dividing the end chambers by means of suitable baffles, so as to isolate groups of outlets at the ends of the tubes, it is possible to obtain two or more paths for a plurality of first fluids, entering and leaving the end chambers through separate inlet and outlet pipes.

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)
EP92200714A 1991-03-19 1992-03-12 Wärmetauscher für Flüssigkeiten Withdrawn EP0504990A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI910731 1991-03-19
ITMI910731A IT1245799B (it) 1991-03-19 1991-03-19 Scambiatore di calore per fluidi

Publications (1)

Publication Number Publication Date
EP0504990A1 true EP0504990A1 (de) 1992-09-23

Family

ID=11359116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92200714A Withdrawn EP0504990A1 (de) 1991-03-19 1992-03-12 Wärmetauscher für Flüssigkeiten

Country Status (2)

Country Link
EP (1) EP0504990A1 (de)
IT (1) IT1245799B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001081841A1 (en) * 2000-04-26 2001-11-01 Mitsubishi Heavy Industries, Ltd. Evaporator and refrigerator
FR2912811A1 (fr) * 2007-02-16 2008-08-22 Valeo Systemes Thermiques Echangeur de chaleur pour fluides a circulation en u
WO2013135808A2 (de) * 2012-03-16 2013-09-19 Behr Gmbh & Co. Kg Wärmeübertrager
EP3819580A1 (de) * 2019-11-06 2021-05-12 Valeo Autosystemy SP. Z.O.O. Wärmetauscher

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1759360A (en) * 1927-08-03 1930-05-20 Gregory H Lifur Heat exchanger
US1946234A (en) * 1931-05-19 1934-02-06 Griscom Russell Co Heat exchanger
DE854224C (de) * 1945-02-01 1952-10-30 Siemens Ag Waermeaustauscher fuer Gasturbinenanlagen
CH402910A (de) * 1963-09-06 1965-11-30 Sulzer Ag Gegenstromwärmeaustauscher für Kälteanlagen
FR2297395A1 (fr) * 1975-01-10 1976-08-06 Neu Ets Perfectionnement aux echangeurs a tubes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1759360A (en) * 1927-08-03 1930-05-20 Gregory H Lifur Heat exchanger
US1946234A (en) * 1931-05-19 1934-02-06 Griscom Russell Co Heat exchanger
DE854224C (de) * 1945-02-01 1952-10-30 Siemens Ag Waermeaustauscher fuer Gasturbinenanlagen
CH402910A (de) * 1963-09-06 1965-11-30 Sulzer Ag Gegenstromwärmeaustauscher für Kälteanlagen
FR2297395A1 (fr) * 1975-01-10 1976-08-06 Neu Ets Perfectionnement aux echangeurs a tubes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001081841A1 (en) * 2000-04-26 2001-11-01 Mitsubishi Heavy Industries, Ltd. Evaporator and refrigerator
US6966200B2 (en) 2000-04-26 2005-11-22 Mitsubishi Heavy Industries, Ltd. Evaporator and refrigerator
FR2912811A1 (fr) * 2007-02-16 2008-08-22 Valeo Systemes Thermiques Echangeur de chaleur pour fluides a circulation en u
WO2008107032A1 (fr) * 2007-02-16 2008-09-12 Valeo Systemes Thermiques Echangeur de chaleur pour fluides a circulation en u
WO2013135808A2 (de) * 2012-03-16 2013-09-19 Behr Gmbh & Co. Kg Wärmeübertrager
WO2013135808A3 (de) * 2012-03-16 2013-11-07 Behr Gmbh & Co. Kg Wärmeübertrager
EP3819580A1 (de) * 2019-11-06 2021-05-12 Valeo Autosystemy SP. Z.O.O. Wärmetauscher
WO2021089326A1 (en) * 2019-11-06 2021-05-14 Valeo Autosystemy Sp. Z O.O. A heat exchanger

Also Published As

Publication number Publication date
IT1245799B (it) 1994-10-18
ITMI910731A1 (it) 1992-09-19
ITMI910731A0 (it) 1991-03-19

Similar Documents

Publication Publication Date Title
US4285397A (en) Heat-exchangers with plate-like heat exchange elements
KR890002902B1 (ko) 열교환기
AU5849499A (en) Heat exchanger tubular block and a multi-chamber flat tube which can be used therefor
EP0796139B1 (de) Modulare übertragungseinrichtung und modul zur übertragung von material oder wärme aus einem mediumstrom zu einem anderen mediumstrom
JP6711822B2 (ja) 熱交換器のタンク構造およびその製造方法
US4440217A (en) Counterflow heat exchanger
JP2004183915A (ja) 熱交換器
JPH04187991A (ja) 熱交換器
US6325139B1 (en) Heat-exchange coil assembly
US4708198A (en) Construction and method for improving heat transfer and mechanical life of tube-bundle heat exchangers
EP0504990A1 (de) Wärmetauscher für Flüssigkeiten
US6012514A (en) Tube-in tube heat exchanger
JP7471281B2 (ja) プレート熱交換器構造及びモジュール構造
US5568835A (en) Concentric heat exchanger having hydraulically expanded flow channels
US6668914B2 (en) Multiple tube bundle heat exchanger
US20010045273A1 (en) Multiple tube bundle heat exchanger
JP2512471Y2 (ja) 車両用熱交換器
JPH0547957Y2 (de)
JPS59158986A (ja) 積層型熱交換器
CN215984131U (zh) 一种多股流螺旋板式换热器
EP3457068A1 (de) Wärmetauscherbaugruppe
WO2019174734A1 (en) Heat exchanger assembly
JPH04306492A (ja) 熱交換器の出入口継手構造
CA1093547A (en) Heat exchanger with concentric flow tubes
WO2021205064A1 (en) A plate heat exchanger arrangement

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU MC NL PT SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19930324