DE594338C - Double spiral - Google Patents

Double spiral

Info

Publication number
DE594338C
DE594338C DENDAT594338D DE594338DD DE594338C DE 594338 C DE594338 C DE 594338C DE NDAT594338 D DENDAT594338 D DE NDAT594338D DE 594338D D DE594338D D DE 594338DD DE 594338 C DE594338 C DE 594338C
Authority
DE
Germany
Prior art keywords
spiral
double
double spiral
metal strip
spirals
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
DENDAT594338D
Other languages
German (de)
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.)
SONEX APPBAU GmbH
Original Assignee
SONEX APPBAU GmbH
Publication date
Application granted granted Critical
Publication of DE594338C publication Critical patent/DE594338C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/12—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Description

Es ist bekannt, doppelgängige Spiralen aus einem Metallbandstreifen herzustellen. Diese bekannten Spiralen weisen jedoch nur geringe Eigenstabilitäten auf und sind daher für viele Anwendungsgebiete, wie z. B. für Auspuffschalldämpfer für Brennkraftmaschinen usw., für Luftreiniger, Transportzwecke, Ventilatoren usw., nicht gut geeignet. Auch sind die bekannten doppelgängigen Metallband-It is known to manufacture double spirals from a strip of metal tape. These However, known spirals have only low inherent stability and are therefore for many Areas of application, such as B. for exhaust silencers for internal combustion engines, etc., for air purifiers, transport purposes, fans etc., not well suited. Also are the well-known double-thread metal band

to spiralen nur mit verhältnismäßig großer Steigung herstellbar, was für die vorgenannten Anwendungsgebiete häufig unerwünscht ist. Hier setzt der Gegenstand der Erfindung ein. Gemäß des Erfindungsgedankens wird vorgeschlagen, die doppelgängige Spirale mit einer Hohlachse zu versehen. Durch diese wird eine bedeutende Versteifung der doppelgängigen Spirale erreicht und ist gleichzeitig hierdurch die Möglichkeit gegeben, die Verdrehung des Metallbandstreifens in einem stärkeren Maße vorzunehmen, als dies bei Spiralen ohne Hohlachse möglich wäre. Dies wiederum ergibt eine geringe Steigung der Spiralgänge.to spirals can only be produced with a relatively large pitch, what for the aforementioned Application areas is often undesirable. This is where the subject of the invention continues a. According to the idea of the invention, it is proposed to use the double spiral to provide a hollow axle. This is a significant stiffening of the double Reached spiral and at the same time this gives the possibility of twisting of the metal strip to a greater extent than with spirals would be possible without a hollow axle. This in turn results in a slight gradient in the spiral threads.

Den Gegenstand der Erfindung und deren prinzipielle Herstellung läßt die Zeichnung erkennen, α ist ein glattes Metallband, welches zunächst in Ouerwellen b gelegt wird und hiernach eine Verdrehung um seine Längsachse'erfährt. Je nach dem gewünschten Durchmesser der Hohlachse c erfolgt die Verdrehung um die Längsachse des Metallbandstreifens um einen Rundstab von entsprechendem Durchmesser. Die Wülste b verlaufen dann nach der Verdrehung radial zu der doppelgängigen Spirale.The object of the invention and its basic production can be seen in the drawing, α is a smooth metal strip which is first placed in Ouerwelle b and then rotates about its longitudinal axis. Depending on the desired diameter of the hollow axis c, the rotation about the longitudinal axis of the metal strip is carried out around a round rod of the appropriate diameter. After the rotation, the beads b then run radially to the double-threaded spiral.

Claims (1)

Patentanspruch:Claim: Eine aus einem Metallband oder Blechstreifen bestehende Spirale, dadurch gekennzeichnet, daß sich die Spirale doppelgängig unter Bildung einer zentralen Hohlachse um die Längsachse des Metallbandes windet.A spiral consisting of a metal band or sheet metal strip, characterized in that that the spiral is double-threaded with the formation of a central hollow axis around the longitudinal axis of the metal strip winds. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DENDAT594338D Double spiral Expired DE594338C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE594338T

Publications (1)

Publication Number Publication Date
DE594338C true DE594338C (en) 1934-03-15

Family

ID=6573456

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT594338D Expired DE594338C (en) Double spiral

Country Status (1)

Country Link
DE (1) DE594338C (en)

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