DE725124C - Finned tube for heat exchanger with embossed sheet metal ribs - Google Patents

Finned tube for heat exchanger with embossed sheet metal ribs

Info

Publication number
DE725124C
DE725124C DEE53424D DEE0053424D DE725124C DE 725124 C DE725124 C DE 725124C DE E53424 D DEE53424 D DE E53424D DE E0053424 D DEE0053424 D DE E0053424D DE 725124 C DE725124 C DE 725124C
Authority
DE
Germany
Prior art keywords
sheet metal
finned tube
heat exchanger
embossed sheet
ribs
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
DEE53424D
Other languages
German (de)
Inventor
Otto Engisch
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 DEE53424D priority Critical patent/DE725124C/en
Application granted granted Critical
Publication of DE725124C publication Critical patent/DE725124C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F28F1/24Tubular 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 transversely
    • F28F1/30Tubular 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 transversely the means being attachable to the element

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Description

Rippenrohr für Wärmeaustauscher mit geprägten Blechrippen Die Erfindung bezieht sich auf Wärmeaustauschvorrichtungen zum Erwärmen oder Kühlen von Luft oder irgendwelchen Gasen, bei denen die wärmeaustauschende Fläche zur Steigerung des Wärmeaustausches hauptsächlich aus Blechrippen .gebildet -wird, die mit runden, das Heiz- oder Kühlmittel führenden Rohren in ,gut wärmeleitende metallische Verbindung ,gebracht sind.Finned tube for heat exchangers with embossed sheet metal fins The invention refers to heat exchange devices for heating or cooling air or any gases in which the heat exchanging surface increases the Heat exchange is mainly formed from sheet metal fins, which are made with round, pipes carrying the heating or cooling medium in a metallic connection that conducts heat well , are brought.

Die Erfindung ist dadurch gekennzeichnet, daß die Blechrippen eine Ausprägung in Tiefe der Rippenentfernung besitzen, die im Querschnitt eine elliptische Form aufweist. The invention is characterized in that the sheet metal ribs have a shape in the depth of the rib distance, which has an elliptical shape in cross section.

An sich sind Rippenrohre für Wärmeaustauscher mit geprägten Blechrippen bekannt. Die bekannten Ausprägungen dienen der Ver--rirbelung des äußeren Austauschmittels. Ferner sind Rippenrohre elliptischen Querschnittes bekannt, die ebenfalls mit Blechrippen besetzt sind. Diese Rohre besitzen zwar schon einen geringen Strömungswiderstand und ,gewährleisten praktisch eine restlose Bestreichung der Rohraußenwand, sind -aber dafür mit verschiedenen wirtschaftlichen und betriebstechnischen Nachteilen behaftet, nämlich: unnötig großer Querschnitt für .das innere Austauschmittel; erschwerte Reinigungsmöglichkeit der elliptischen Rohrinnenfläche von unvermeidlich eintretenden Verkrustungen; größerer Materialaufwand im Vergleich zu vorliegender Erfindung, da mit runden Rohren mit einem Durchmesser ungefähr entsprechend der Breite der Schmalachse eines elliptischen Rohres und bei Anwendung der Rippen nach der Erfindung praktisch die gleiche Wärmeaustauschleistung erreichbar ist; teurer Herstellung der elliptischen Rohre und geringerer Festigkeit gegenüber runden Rohren, bei welcher Ausführung mit verhältnismäßig höheren Drücken gearbeitet -werden kann.As such, finned tubes for heat exchangers are with embossed sheet metal fins known. The known characteristics serve to turbulence the external exchange medium. Furthermore, finned tubes of elliptical cross section are known, which are also with sheet metal fins are occupied. These pipes already have a low flow resistance and, practically guarantee a complete coating of the pipe outer wall -but with various economic and operational disadvantages afflicted, namely: unnecessarily large cross-section for the internal exchange medium; difficult Possibility to clean the elliptical inner surface of the pipe from unavoidable occurrences Incrustations; greater material expenditure compared to the present invention, as with round tubes with a diameter approximately corresponding to the width of the Narrow axis of an elliptical tube and when using the ribs according to the invention practically the same heat exchange performance can be achieved; expensive to manufacture of elliptical tubes and lower strength compared to round tubes, in which Execution with relatively higher pressures can be used.

Es sind auch schon Rundrohre mit aufgezogenem Rippenkörper elliptischen Querschnittes in Gußausführung bekanntgeworden. Diese Ausführung ist gleichfalls in der Herstellung und dem Material nach teuer und umständlich.There are also elliptical round tubes with raised ribs Cross-section in cast design became known. This version is also expensive and cumbersome in manufacture and material.

Die geschilderten Nachteile werden durch die vorliegende Erfindung beseitigt. Hiernach werden die Blechrippen so ausgeführt, daß nach dem Querschnitt gemäß Fig. a durch sie die elliptische.Form zur Verringerung des Luftwiderstandes gegeben ist und die so gebildete elliptische, parallel zum Rohr laufende Wanda praktisch die gleiche Wärmeabgabe-oder Wärmeaufnahmemöglichkeit besitzt wie die eines elliptischen Rohres, während aber die Wasserführung in runden Rohren erfolgt.The disadvantages outlined are alleviated by the present invention eliminated. After that, the sheet metal ribs are designed so that according to the cross-section according to Fig. a through them the elliptical shape to reduce air resistance is given and the so formed elliptical Wanda running parallel to the pipe is practical has the same heat emission or heat absorption capability as that of an elliptical Pipe, while the water flow takes place in round pipes.

Fig.2 zeigt den Längsschnitt durch ein Rippenrohr nach der Erfindung und veranschaulicht die Ausführung der Rippen mit der elliptischen Ausprägung, durch die die von der Luft oder den Gasen bestrichene, parallel zum Rohr verlaufende elliptische Wanda gebildet wird, die ihrerseits als Fortsetzung die senkrecht zum Rohr verlaufenden eigentlichen Rippen b besitzt. Das Material der Rippen zwischen der das Rohr umschließenden Bördelkante und der Wanda -wird von der durch die Rippen bzw. den Ausprägungen geführten Luft oder den Gasen nicht berührt und dient als Wärmeüberleitungsbrücke zwischen Rohr und der elliptischen Wand a. Wärmeüberleitungsbrücke,Wanda und Ripped sind von gleicher Stärke.2 shows the longitudinal section through a finned tube according to the invention and illustrates the execution of the ribs with the elliptical shape the elliptical one that is swept by the air or the gases and runs parallel to the pipe Wanda is formed, which in turn as a continuation of the perpendicular to the pipe owns actual ribs b. The material of the ribs between those surrounding the pipe Flanged edge and the Wanda -is guided by the ribs or the embossments Air or the gases and serves as a heat transfer bridge between Pipe and the elliptical wall a. Heat transfer bridge, Wanda and Ripped are of equal strength.

Claims (1)

PATENTANSPRUCH: Rippenrohr kreisrunden Querschnittes für Wärmeaustauscher mit aus Blech hergestellten Rippen, :die mit Ausprägungen zur Leitung des zwischen ihnen strömenden Mittels versehen sind, dadurch gekennzeichnet, daß die Ausprägungen eine entsprechend der Rippenentfernung parallel zum Rohr verlaufende Wand (a) von im Querschnitt elliptischer Form aufweisen.PATENT CLAIM: Finned tube of circular cross-section for heat exchangers with ribs made of sheet metal,: those with stampings for the conduction of the between them flowing means are provided, characterized in that the expressions a wall (a) of parallel to the pipe corresponding to the rib distance have an elliptical cross-section.
DEE53424D 1940-02-25 1940-02-25 Finned tube for heat exchanger with embossed sheet metal ribs Expired DE725124C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE53424D DE725124C (en) 1940-02-25 1940-02-25 Finned tube for heat exchanger with embossed sheet metal ribs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE53424D DE725124C (en) 1940-02-25 1940-02-25 Finned tube for heat exchanger with embossed sheet metal ribs

Publications (1)

Publication Number Publication Date
DE725124C true DE725124C (en) 1942-09-14

Family

ID=7081766

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE53424D Expired DE725124C (en) 1940-02-25 1940-02-25 Finned tube for heat exchanger with embossed sheet metal ribs

Country Status (1)

Country Link
DE (1) DE725124C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195687A (en) * 1977-12-12 1980-04-01 Taziker Robert E Space heating panels
US4789027A (en) * 1985-05-15 1988-12-06 Sulzer Brothers Limited Ribbed heat exchanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195687A (en) * 1977-12-12 1980-04-01 Taziker Robert E Space heating panels
US4789027A (en) * 1985-05-15 1988-12-06 Sulzer Brothers Limited Ribbed heat exchanger

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