DE2921908A1 - Heat exchanger pipe and fin assembly - has straight coolant pipe runs enclosed by expanded metal plate - Google Patents

Heat exchanger pipe and fin assembly - has straight coolant pipe runs enclosed by expanded metal plate

Info

Publication number
DE2921908A1
DE2921908A1 DE19792921908 DE2921908A DE2921908A1 DE 2921908 A1 DE2921908 A1 DE 2921908A1 DE 19792921908 DE19792921908 DE 19792921908 DE 2921908 A DE2921908 A DE 2921908A DE 2921908 A1 DE2921908 A1 DE 2921908A1
Authority
DE
Germany
Prior art keywords
heat exchanger
expanded metal
pipe
enclosed
runs
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Withdrawn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
DE19792921908
Other languages
German (de)
Inventor
Hans Joachim Weiss
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
Priority to DE19792921908 priority Critical patent/DE2921908A1/en
Publication of DE2921908A1 publication Critical patent/DE2921908A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • F28F1/22—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 having portions engaging further tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • 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
    • F28D7/08—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 otherwise bent, e.g. in a serpentine or zig-zag
    • 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
    • F28D7/08—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 otherwise bent, e.g. in a serpentine or zig-zag
    • F28D7/082—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 otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
    • F28D7/085—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 otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
    • F28D7/087—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 otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions assembled in arrays, each array being arranged in the same plane

Abstract

The heat exchanger includes a pipe coil which is filled with the coolant. The pipe coil has a number of straight runs connected by 180 deg. bends, and a heat exchanger plate with slots enclosing these runs for an appreciable part of their periphery. The heat exchanger plate (2) is made of expanded metal, in which ribs (3) can be formed, fitting round and gripping the pipe runs (6). The design combines high efficiency with low production costs.

Description

Wä rme tauscherHeat exchanger

Die Erfindung betrifft einen Wärmetauscher mit einer das Kühlmittel führenden Rohrschlange, mit parallel zueinander verlaufenden Rohrabschnitten und mit einem in der Ebene der Rohrschlange liegenden mit Schlitzen versehenen Wärmetauscherblech, das die Rohrabschnitte auf einem wesentlichen Teil ihres Umfanges umgreift.The invention relates to a heat exchanger with a pipe coil carrying the coolant, with parallel to each other extending pipe sections and with one in the Layer of the tube coil lying with slotted heat exchanger plate, which the tube sections on a substantial Encompasses part of its scope.

Wärmetauscher der vorstehend genannten Art werden vor allem bei Kühl- und Gefrierschränken eingesetzt. Man unterscheidet hier im wesentlichen zwei verschiedene Bauarten. Zum einen werden auf die Rohrschlange beiderseitig Drähte aufgeschweißt, die die für die Wärmeabgabe zur Verfügung stehenden Flächen vergrößern sollen. Eine befriedigende Oberflächenvergrößerung läßt sich ohne Einsatz unverhältnismäßig großer Drahtmengen nicht erreichen. Zum anderen werdenHeat exchangers of the type mentioned above are mainly used in refrigerators and freezers. One distinguishes here essentially two different types. On the one hand, wires are welded on both sides of the pipe coil, which are intended to enlarge the areas available for heat dissipation. A satisfactory increase in surface area cannot be achieved without the use of disproportionately large amounts of wire. To be another

030050/0130030050/0130

geschlitbte Wärmetauscherbleche verwendet, die, wie es aus der DE-PS 12 97 631 bekannt ist, mit ihren ungelochten Bereichen um die geraden Abschnitte der Rohrschlange gewunden werden. Der Umschlingungswinkel sollte hierbei 180° überschreiten. Bei dem zuletzt genannten Wärmetauscher sind die Rohrschlangen vertikal angeordnet, wodurch sich in Kühlmittelflußrichtung ein ungünstiges Temperaturgefälle am Wärmetauscherblech einstellt. Darüberhinaus sind die Schlitze des bekannten Wärmetauschers, die aus' einer kompakten Blechtafel ausgestanzt werden, sehr eng.uses slotted heat exchanger plates that, like it from DE-PS 12 97 631 is known, wound with their unperforated areas around the straight sections of the pipe coil will. The wrap angle should exceed 180 °. In the last-mentioned heat exchanger the pipe coils are arranged vertically, which results in an unfavorable temperature gradient in the coolant flow direction on the heat exchanger plate. In addition, the slots of the known heat exchanger, which are made of ' be punched out of a compact sheet metal, very tight.

Diese betragen in der Regel ca. 2 mm, worauf zurückzuführen ist, daß diese verstauben und sich, insbesondere in Verbindung mit Fett zusetzen, so daß der Wirkungsgrad des Wärmetauschers schnell abnimmt.These are usually about 2 mm, which is due to the fact that they gather dust and, especially in connection add grease so that the efficiency of the heat exchanger decreases rapidly.

Der Erfindung liegt die Aufgabe zugrunde, einen Wärmetauscher der eingangs beschriebenen Art so auszubilden, daß dieser kostengünstig in der Herstellung ist und ein Zusetzen der Schlitze inTWärmetauscherblech vermieden wird und der bei gleichem Materialaufwand einen höheren Wirkungsgrad aufweist.The invention is based on the object of designing a heat exchanger of the type described at the outset in such a way that that this is inexpensive to manufacture and avoids clogging of the slots in the heat exchanger plate and which has a higher efficiency with the same material expenditure.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß als Wärmetauscher ein Streckmetall dient. Dieses Streckmetall wird wie bai den bekannten Wärmetauschern um die geraden Abschnitte der Rohrschlange gelegt, so daß diese mit einem Winkel von mehr als 180° umfaßt werden. Als besonders vorteilhaft hat sich Rippenstreckmetall erwiesen, wobei die Rippen des Streckmetalles um die geraden Abschnitte der Rohrschlange gelegt werden. Hierdurch ist ein intensiver Wärmeübergang vom Wärmetauscher zu der Rohrschlange gewährleistet.This object is achieved according to the invention in that an expanded metal is used as a heat exchanger. This expanded metal is like bai the known heat exchangers around the laid straight sections of the pipe coil so that they are encompassed at an angle of more than 180 °. as Ribbed expanded metal has proven to be particularly advantageous, the ribs of the expanded metal around the straight Sections of the pipe coil are laid. This results in an intensive heat transfer from the heat exchanger to the Coiled pipe guaranteed.

Rippenstreckmetall wird in vielen Bereichen der Technik in großem Umfang verwendet, so daß für die BereitstellungExpanded rib metal is used extensively in many fields of technology, so for the provision

030050/0130030050/0130

-H--H-

dieses Materials für Wärmetauscher kein besonderer Werkzeugaufwand etc. erforderlich ist. Darüberhinaus kann das Rippenstreckmetall entsprechend dem jeweiligen Wärmetauscher gestreckt werden, wobei das geforderte Maß zwischen öffnungen im Metall und Stegfläche erhalten wird. Die Schlitzöffnungen lassen sich in einem weiten Bereich variieren, so daß diese ausreichend groß gewählt werden können, daß die Gefahr des Zusetzens, wie es bei herkömmlichen Wärmetauschern gegeben ist, nicht mehr besteht.This material for heat exchangers does not require any special tools etc. is required. In addition, the expanded rib metal can correspond to the respective heat exchanger are stretched, the required dimension between openings in the metal and the web surface is obtained. The slit openings can be varied over a wide range, so that they can be chosen to be sufficiently large that the risk of Clogging, as is the case with conventional heat exchangers, no longer exists.

Ein Ausführungsbeispiel der Erfindung ist im folgenden anhand der Zeichnung näher beschrieben. In dieser zeigen:An embodiment of the invention is described in more detail below with reference to the drawing. In this show:

Fig. 1 eine Draufsicht auf einen erfindungsgemäß ausgebildeten Wärmetauscher undFig. 1 is a plan view of a heat exchanger designed according to the invention and

Fig., 2 einen Schnitt nach Linie II-II in Fig. 1.FIG. 2 shows a section along line II-II in FIG. 1.

Der in den Figuren dargestellte Wärmetauscher ist insgesamt mit 1 bezeichnete Die das Kühlmittel führende Rohrschlange weist gerade Abschnitte aufr die einander parallel angeordnet sind, um diese geraden Abschnitte ist ein Rippenstreckmetall 5 mit seinen Rippen 3,4 geschlungen, wobei der Umschlingungswinkel im vorliegenden Ausführungsbeispiel beinahe 360° beträgt. Das Rippenstreckmetall 5 ist in bekannter Weise gedehnt und weist Rippen 7 auf, die einen großen Abstand zueinander aufweisen,, so daß diese sich nicht durch Schmutz und Fetteilchen zusetzen können.The heat exchanger shown in the figures is generally designated by 1, the coolant leading tube coil has straight portions at r which are arranged parallel to each other to these straight portions of a rib mesh is wrapped 5 with its ribs 3.4, wherein the wrap angle in the present embodiment, almost 360 °. The expanded rib metal 5 is stretched in a known manner and has ribs 7 which are spaced a long way from one another, so that they cannot become clogged by dirt and grease particles.

Der erfindungsgemäße Wärmetauscher kann ohne weiteres mit einer horizontal angeordneten Rohrschlange ausgebildet werden, was die Kühlung verbessert. Darüberhinaus ist der Wirkungsgrad des Wärmetauschers 1, verglichen mit bekannten Wärmetau*- schern vergleichsweise hoch, da die Oberfläche des Wärmetauschers durch die vielen ausgestellten Rippen vergleichsweise groß ist und zudem die Zirkulation durch die RippenThe heat exchanger according to the invention can easily with a horizontally arranged coil are formed, which improves the cooling. In addition, the efficiency of the heat exchanger 1, compared to known heat exchange * - shear comparatively high, as the surface of the heat exchanger is comparatively due to the many exposed fins is large and also the circulation through the ribs

-A--A-

030050/0130030050/0130

-y-5 .-y-5.

stark begünstigt wird. Abgesehen von dem hohen Wirkungsgrad ist ein erfindungsgemäß ausgebildeter Wärmetauscher äußerst kostengünstig herzustellen.is strongly favored. Apart from the high degree of efficiency, there is a heat exchanger designed according to the invention extremely inexpensive to manufacture.

Q30O5Q/013QQ30O5Q / 013Q

■ C ■ C

L e e r s e i t eL e r s e i t e

Claims (2)

Ansprüche:Expectations: Wärmetauscher mit einer das Kühlmittel führenden Rohrschlange, mit parallel zueinander verlaufenden geraden Abschnitten und mit einem in der Ebene der Rohrschlange liegenden mit Schlitzen versehenem Wärmetauscherblech, das die geraden Rohrabschnitte auf einem_wesentlichen Teil ihres Umfanges umgreift, dadurch gekennzeichnet, daß als Wärmetauscherblech ein Streckmetall (5) dient.Heat exchanger with a pipe coil carrying the coolant, with straight sections running parallel to one another and with a heat exchanger plate provided with slits lying in the plane of the pipe coil, that the straight pipe sections on a_essential Engages around part of its circumference, characterized in that an expanded metal (5) serves as the heat exchanger plate. 2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß das Streckmetall (5) ein Rippenstreckmetall ist und die Rippen (3, 4) um die geraden Abschnitte der Rohrschlange (6) fest anliegend geschlungen sind.2. Heat exchanger according to claim 1, characterized in that that the expanded metal (5) is a rib expanded metal and the ribs (3, 4) around the straight sections of the pipe coil (6) are looped tightly. INSPECTEDINSPECTED 030050/0130030050/0130
DE19792921908 1979-05-30 1979-05-30 Heat exchanger pipe and fin assembly - has straight coolant pipe runs enclosed by expanded metal plate Withdrawn DE2921908A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792921908 DE2921908A1 (en) 1979-05-30 1979-05-30 Heat exchanger pipe and fin assembly - has straight coolant pipe runs enclosed by expanded metal plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792921908 DE2921908A1 (en) 1979-05-30 1979-05-30 Heat exchanger pipe and fin assembly - has straight coolant pipe runs enclosed by expanded metal plate

Publications (1)

Publication Number Publication Date
DE2921908A1 true DE2921908A1 (en) 1980-12-11

Family

ID=6072007

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792921908 Withdrawn DE2921908A1 (en) 1979-05-30 1979-05-30 Heat exchanger pipe and fin assembly - has straight coolant pipe runs enclosed by expanded metal plate

Country Status (1)

Country Link
DE (1) DE2921908A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505474A1 (en) * 1981-05-05 1982-11-12 Electricite De France HEAT EXCHANGER WITH METAL TUBE PATCH
DE9007061U1 (en) * 1990-06-25 1991-10-31 Bossert, Gerdi, 7730 Villingen-Schwenningen, De
US5398752A (en) * 1993-08-19 1995-03-21 Abbott; Roy W. Strip fin and tube heat exchanger

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505474A1 (en) * 1981-05-05 1982-11-12 Electricite De France HEAT EXCHANGER WITH METAL TUBE PATCH
EP0065453A1 (en) * 1981-05-05 1982-11-24 Electricite De France Metallic tube sheet heat exchanger
DE9007061U1 (en) * 1990-06-25 1991-10-31 Bossert, Gerdi, 7730 Villingen-Schwenningen, De
US5398752A (en) * 1993-08-19 1995-03-21 Abbott; Roy W. Strip fin and tube heat exchanger

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee