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DE851203C - Tubular heat exchanger, especially condenser for refrigeration machines - Google Patents

Tubular heat exchanger, especially condenser for refrigeration machines

Info

Publication number
DE851203C
DE851203C DES7869D DES0007869D DE851203C DE 851203 C DE851203 C DE 851203C DE S7869 D DES7869 D DE S7869D DE S0007869 D DES0007869 D DE S0007869D DE 851203 C DE851203 C DE 851203C
Authority
DE
Germany
Prior art keywords
heat exchanger
tubes
sheet metal
sheets
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.)
Expired
Application number
DES7869D
Other languages
German (de)
Inventor
Guenter Dipl-Ing Hein
Rudolf Hintze
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.)
Siemens Corp
Original Assignee
Siemens Corp
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 Siemens Corp filed Critical Siemens Corp
Priority to DES7869D priority Critical patent/DE851203C/en
Application granted granted Critical
Publication of DE851203C publication Critical patent/DE851203C/en
Expired legal-status Critical Current

Links

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
    • F28D1/00Heat-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
    • F28D1/02Heat-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
    • F28D1/04Heat-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
    • F28D1/047Heat-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 bent, e.g. in a serpentine or zig-zag
    • F28D1/0477Heat-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 bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • F25B39/04Condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular 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
    • F28F1/14Tubular 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
    • F28F1/22Tubular 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 having portions engaging further tubular elements

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)

Description

Rohrförmiger Wärmeaustauscher, insbesondere Kondensator für Kältemaschinen In der Technik werden vielfach Wärmeaustauscher benötigt, mit deren Hilfe flüssige oder gasförmige Arbeitsmittel zum Wärmeaustausch miteinander gebracht werden sollen. Solche Wärmeaustauscher werden vielfach aus Rohren hergestellt, die zur Vergrößerung der Wärmeaustauschfläche außen mit Rippen versehen sind. Man kann dabei Längs- oder Querrippen verwenden. Es sind auch Wärmeaustauscher bekannt, bei denen Querrippenbleche mit den Rohren durch Halter verbunden sind, welche durch Biegen der Bleche selbst gebildet sind. Bei diesen Wärmeaustauschern findet aber zwischen dem Rohr und der Querrippe nur eine linienförmige Berührung statt, so daß die Wärmeübertragung gering ist. Erfindungsgemäß sind die Bleche als Längsrippen ausgebildet, die mit den Rohren durch Halter verbunden sind, welche durch Biegen der Bleche selbst gebildet sind und sich an die Rohroberfläche anschmiegen. Infolge der großen Berührungsfläche gelingt es, einen sehr guten wärmeleitenden Kontakt zwischen den Rohren und den zur Vergrößerung der wärmeaustauschenden Oberfläche verwendeten Längsrippenblechen herzustellen, ohne daß eine zusätzliche Löt- oder Schweißarbeit oder eine Verzinnung zur. Verbesserung des Wärmeüberganges zwischen Rohren und Rippen erforderlich wäre. Insbesondere eignet sich die Erfindung in allen solchen Fällen, wo ein gasförmiges oder flüssiges Medium durch die Rohre strömt, das in Wärmeaustausch gebracht werden soll mit einem über die äußere Oberfläche der Rohre und Rippen strömenden gas- oder dampfförmigen Medium. Die Erfindung kann insbesondere mit Vorteil verwendet werden bei in der Kältetechnik benötigten Wärmeaustauschern, beispielsweise also bei luftgekühlten Kondensatoren für Kältemaschinen.Tubular heat exchanger, in particular condenser for refrigerating machines In technology, heat exchangers are often required, with the help of which liquid or gaseous working fluids are to be brought to exchange heat with one another. Such heat exchangers are often made from tubes that are used for enlargement the heat exchange surface are provided with ribs on the outside. You can do this lengthways or Use cross ribs. There are also known heat exchangers in which transverse ribbed sheets are connected to the pipes by brackets, which are made by bending the sheets themselves are formed. In these heat exchangers, however, takes place between the pipe and the Cross rib only a linear contact instead, so that the heat transfer is low is. According to the invention, the metal sheets are designed as longitudinal ribs that are connected to the tubes are connected by holders, which are formed by bending the sheets themselves and nestle against the pipe surface. As a result of the large contact area succeeds in a very good heat-conducting contact between the tubes and the Longitudinal ribbed sheets used to increase the heat-exchanging surface without any additional soldering or welding work or tinning to the. Improvement of the heat transfer between tubes and fins would be required. In particular, the invention is suitable in all such cases where a gaseous or liquid medium flows through the tubes, which are brought into heat exchange is said to have an over the outer surface of the tubes and Ribs flowing gaseous or vaporous medium. In particular, the invention can be used to advantage are used in heat exchangers required in refrigeration technology, for example in air-cooled condensers for chillers.

Man kann den Wärmeaustauscher gemäß der weiteren Erfindung mit Vorteil so ausbilden, daß jeweils mehrere vorzugsweise parallel liegende Rohre eines Wärmeaustauschers in die Halter eines gemeinsamen Bleches eingesetzt sind. Auf diese Weise dient das gemeinsame Blech auch gleichzeitig zur Versteifung des aus mehreren Rohren aufgebauten Wärmeaustauschers. Man kann ein solches mehrere Rohre verbindendes Blech als Wellblech ausführen, wodurch man mit einfachen :Mitteln eine wesentliche Vergrößerung der wärmeabgebenden Oberfläche erhalten kann. Die Halter für die Rohre, welche durch Biegen der Bleche selbst gebildet werden, kann man in verschiedener Weise herstellen. Man kann beispielsweise das Blechmaterial scharnierärtig abwechselnd herausdrücken, so daß es jeweils ein Rohr umschließt. Es ist auch möglich, den Halter durch Zusammenquetschen des Bleches an der Stelle, wo das Rohr anliegt, herzustellen.You can use the heat exchanger according to the further invention with advantage train so that in each case several preferably parallel tubes of a heat exchanger are used in the holder of a common sheet. This is the way that serves common sheet metal also at the same time to stiffen the built up from several tubes Heat exchanger. Such a sheet metal connecting several pipes can be a corrugated sheet metal execute, whereby one with simple: means a substantial increase of the heat-emitting surface can receive. The holder for the pipes, which through Bending of the sheets themselves can be produced in various ways. For example, you can alternately press out the sheet metal material in the form of a hinge, so that it encloses a tube at a time. It is also possible to squeeze the holder together of the sheet metal at the point where the pipe rests.

Praktische Ausführungsbeispiele für Wärmeaustauscher nach der Erfindung sind in den Figuren behandelt.Practical embodiments for heat exchangers according to the invention are dealt with in the figures.

Fig. i und 2 zeigen in der Ansicht und im Querschnitt einen Wärmeaustauscher, der beispielsweise als luftgekühlter Kondensator einer Kältemaschine dienen kann. Als Kältemittelkanäle dient ein Rohrsystem, das aus einem Sammelrohr i und mehreren U-förmig gebogenen Rohren 2 besteht. Die Schenkel 3 und 4 der U-förmig gebogenen Rohre münden bei 5 bzw. 6 in das Sammelrohr i. Zur Vergrößerung der wärmeaustauschenden Oberfläche der Kondensatorrohre ist ein Blechmantel 7 vorgesehen, der in der aus Fig. 2 ersichtlichen Weise wellblechartig gebogen ist. Bei diesem Ausführungsbeispiel sind Halter für die Rohre 3 und 4 in den am wenigsten gekrümmten mittleren Teilen der Wellbleche dadurch gebildet, daß Blechteile 8 und 9 scharnierartig abwechselnd herausgedrückt sind, so daß das U-förmig gebogene Kondensatorrohr 2 von diesen Teilen abwechselnd umschlossen wird.Fig. I and 2 show in view and in cross section a heat exchanger, which can serve, for example, as an air-cooled condenser in a refrigeration machine. A pipe system consisting of a header pipe and several U-shaped bent tubes 2 consists. The legs 3 and 4 of the U-shaped bent Pipes open into the manifold at 5 and 6 respectively. To enlarge the heat exchanging Surface of the condenser tubes is provided a sheet metal jacket 7, which is made of Fig. 2 is bent in the manner of a corrugated sheet as can be seen. In this embodiment are holders for tubes 3 and 4 in the least curved central parts the corrugated sheet is formed in that sheet metal parts 8 and 9 alternate in a hinge-like manner are pushed out, so that the U-shaped bent condenser tube 2 of these parts is alternately enclosed.

Eine andere Ausführungsmöglichkeit der Erfindung ist in Fig. 3 und 4 in der Ansicht und im Querschnitt dargestellt. Soweit die Einzelteile mit denen in der Fig. i, 2 übereinstimmen, sind dieselben Bezugszeichen verwendet. Mit den U-förmig gebogenen Kondensatorrohren 2 sind in diesem Fall zwei wellblechartig gebogene Kondensatorbleche 1i, 12 gut wärmeleitend verbunden. In dem Blech 12 sind in diesem Fall Schlitze 13 und in dem Blech ii entsprechende dagegen versetzte Schlitze ausgespart, so daß hier die beiden Bleche mit den am stärksten gekrümmten Teilen der Wellbleche die Rohre scharnierartig umschließen. Eine andere Ausführungsmöglichkeit der Erfindung ist in Fig. 5 und 6 dargestellt. Auch hier sind die einzelnen Teile, soweit sie mit denen in den vorhergehenden Figuren übereinstimmen, mit denselben Bezugszeichen versehen. Mit den Rohren 2 ist bei diesem Ausführungsbeispiel der Erfindung ein einziges Wellblech 21 gut wärmeleitend verbunden. Die Rohre 3 und 4 sind hier in dem am stärkten gekrümmten Teil 22 der Wellbleche dadurch gehaltert, daß diese Teile der Wellbleche mit einer geeigneten Vorrichtung bei 23 und 24 zusammengequetscht sind. In Fig. 6 ist mit einer gestrichelten Linie die Form des Bleches 2i vor dem Zusammenquetschen eingezeichnet. Das in Fig. 5 und 6 dargestellte Ausführungsbeispiel ist deshalb besonders vorteilhaft, weil hier ein Ausstanzen von Blechteilen überhaupt nicht erforderlich ist.Another embodiment of the invention is shown in Fig. 3 and 4 in the view and in cross section. Insofar as the individual parts correspond to those in FIGS. 1 and 2, the same reference numerals are used. With the U-shaped bent condenser tubes 2, two corrugated sheet-like bent condenser sheets 1i, 12 are connected with good thermal conductivity. In this case, slots 13 are recessed in sheet metal 12 and in sheet metal ii corresponding offset slots, so that here the two sheets with the most curved parts of the corrugated sheets enclose the tubes in a hinge-like manner. Another possible embodiment of the invention is shown in FIGS. Here too, the individual parts are provided with the same reference numerals to the extent that they correspond to those in the previous figures. In this exemplary embodiment of the invention, a single corrugated sheet metal 21 is connected to the tubes 2 in a manner that conducts heat well. The tubes 3 and 4 are held here in the most strongly curved part 22 of the corrugated sheet metal in that these parts of the corrugated sheet metal are squeezed together at 23 and 24 with a suitable device. In Fig. 6, the shape of the sheet 2i is shown with a dashed line before being squeezed together. The exemplary embodiment shown in FIGS. 5 and 6 is particularly advantageous because sheet metal parts need not be punched out at all.

Claims (7)

PATENTANSPRCCHE: i. Rohrförmiger Wärmeaustauscher, dessen Oberfläche durch Blechrippen vergrößert ist, insbesondere Kondensator für Kältemaschinen, dadurch gekennzeichnet, daß die als Längsrippen ausgebildeten Bleche mit den Rohren durch Halter verbunden sind, welche durch Biegen der Bleche selbst derart gebildet sind, daß sich die Blechoberfläche an die Oberfläche der Rohre anschmiegt. CLAIMS: i. Tubular heat exchanger, its surface is enlarged by sheet metal ribs, in particular condenser for refrigeration machines, thereby characterized in that the metal sheets formed as longitudinal ribs with the tubes through Holders are connected, which are formed by bending the sheets themselves in such a way that that the sheet metal surface hugs the surface of the pipes. 2. Wärmeaustauscher nach Anspruch i, dadurch gekennzeichnet, daß jeweils mehrere vorzugsweise parallel liegende Rohre eines Wärmeaustauschers in die Halter eines gemeinsamen Bleches eingesetzt sind. 2. Heat exchanger according to claim i, characterized in that several preferably parallel lying pipes of a heat exchanger inserted into the holder of a common plate are. 3. Wärmeaustauscher nach Anspruch i oder 2, dadurch gekennzeichnet, daß das mehrere Rohre verbindende Blech gewellt ist. 3. Heat exchanger according to claim i or 2, characterized in that the sheet metal connecting several pipes is corrugated. 4. Wärmeaustauscher nach Anspruch 3, dadurch gekennzeichnet, daß Halter für die Rohre in dem am wenigsten gekrümmten mittleren Teil der Wellbleche gebildet sind. 4. Heat exchanger according to claim 3, characterized in that holders for the tubes in the least curved middle part of the corrugated sheets are formed. 5. Wärmeaustauscher nach Anspruch 3, dadurch gekennzeichnet, daß die Rohre an dem am stärksten gekrümmten Teil der Wellbleche gehaltert sind. 5. Heat exchanger according to claim 3, characterized in that the tubes at the most curved part of the corrugated sheets are held. 6. W ärmeaustauscher nach Anspruch 5, dadurch gekennzeichnet, daß die Rohre in dem am stärksten gekrümmten Teil der Wellbleche durch Zusammenquetschen des Bleches gehaltert sind. 6. heat exchanger according to claim 5, characterized in that the tubes in the most curved part of the corrugated sheets by squeezing them together of the sheet are supported. 7. Wärmeaustauscher nach Anspruch i oder einem der folgenden, dadurch gekennzeichnet, daß die Halter in dem Blech dadurch gebildet sind, daß das Blech scharnierartig abwechselnd herausgedrückt ist, so daß es die Rohre umschließt. B. Wärmeaustauscher nach Anspruch i oder einem der folgenden, dadurch gekennzeichnet, daß mit mehreren parallel liegenden Rohren eines W ärmeaustauschers zwei gewellte Bleche verbunden sind, wobei die Rohre in den am stärksten gekrümmten Teilen der Wellbleche gehaltert sind.7. Heat exchanger according to claim i or one of the following, characterized in that the holders in the sheet metal are formed in that the Sheet metal is hinge-like pressed out alternately so that it encloses the tubes. B. Heat exchanger according to claim i or one of the following, characterized in that that with several parallel tubes of a heat exchanger two corrugated Metal sheets are connected, with the tubes in the most curved parts of the Corrugated sheets are supported.
DES7869D 1939-06-04 1939-06-04 Tubular heat exchanger, especially condenser for refrigeration machines Expired DE851203C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES7869D DE851203C (en) 1939-06-04 1939-06-04 Tubular heat exchanger, especially condenser for refrigeration machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES7869D DE851203C (en) 1939-06-04 1939-06-04 Tubular heat exchanger, especially condenser for refrigeration machines

Publications (1)

Publication Number Publication Date
DE851203C true DE851203C (en) 1952-10-02

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DES7869D Expired DE851203C (en) 1939-06-04 1939-06-04 Tubular heat exchanger, especially condenser for refrigeration machines

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DE (1) DE851203C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804284A (en) * 1953-04-03 1957-08-27 Griscom Russell Co Heat exchanger
DE1124526B (en) * 1959-04-16 1962-03-01 Licentia Gmbh Coiled tube heat exchanger with heat conducting plates arranged between the tubes, in particular condensers for refrigeration machines
DE2118201A1 (en) * 1970-05-11 1971-11-25 Runtal Holding Co. S.A., Glarus (Schweiz) Convector radiator
US4076076A (en) * 1976-07-12 1978-02-28 Halm Instrument Co., Inc. Mechanical heat exchange joint
US5964284A (en) * 1994-07-22 1999-10-12 Mitsubishi Denki Kabushiki Kaisha Heat exchanger for air conditioner and method of fabricating the heat exchanger

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804284A (en) * 1953-04-03 1957-08-27 Griscom Russell Co Heat exchanger
DE1124526B (en) * 1959-04-16 1962-03-01 Licentia Gmbh Coiled tube heat exchanger with heat conducting plates arranged between the tubes, in particular condensers for refrigeration machines
DE2118201A1 (en) * 1970-05-11 1971-11-25 Runtal Holding Co. S.A., Glarus (Schweiz) Convector radiator
US4076076A (en) * 1976-07-12 1978-02-28 Halm Instrument Co., Inc. Mechanical heat exchange joint
US5964284A (en) * 1994-07-22 1999-10-12 Mitsubishi Denki Kabushiki Kaisha Heat exchanger for air conditioner and method of fabricating the heat exchanger

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