DE3634539A1 - Variable venturi nozzle - Google Patents

Variable venturi nozzle

Info

Publication number
DE3634539A1
DE3634539A1 DE19863634539 DE3634539A DE3634539A1 DE 3634539 A1 DE3634539 A1 DE 3634539A1 DE 19863634539 DE19863634539 DE 19863634539 DE 3634539 A DE3634539 A DE 3634539A DE 3634539 A1 DE3634539 A1 DE 3634539A1
Authority
DE
Germany
Prior art keywords
venturi nozzle
tube
hose
evacuated
air
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.)
Granted
Application number
DE19863634539
Other languages
German (de)
Other versions
DE3634539C2 (en
Inventor
Peter Riekhof
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.)
RIEKHOF, PETER, 3340 ADERSHEIM, DE
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 DE19863634539 priority Critical patent/DE3634539A1/en
Publication of DE3634539A1 publication Critical patent/DE3634539A1/en
Application granted granted Critical
Publication of DE3634539C2 publication Critical patent/DE3634539C2/de
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages

Abstract

The variable venturi nozzle makes it possible to significantly expand the range of uses of the traditional venturi tube and of the venturi nozzle according to DIN 1952. It represents a considerable improvement for flow regulation and control. The shape of a venturi nozzle is simulated with the aid of a highly flexible hose which is placed in a tube and stretched over the ends and fastened in such a way that tensile stresses are produced in the hose. If the air in the space between the surrounding tube and the hose is evacuated, the stream tube expands continuously in accordance with the amount of air evacuated, until the hose rests completely against the inner wall of the tube. The original shape of the nozzle can be restored by admitting air to the evacuated space. This means that it is possible, with the aid of defined negative pressures, to achieve any desired diameter ratio. Since the variable venturi nozzle is in all cases more advantageous in terms of flow than any other restriction element, it can be assumed that energy advantages will be obtained.

Description

Die Erfindung betrifft eine Venturidüse, deren Durchmesserverhältnis während des Betriebes veränder­ bar ist.The invention relates to a Venturi nozzle, the Change diameter ratio during operation is cash.

Venturidüsen sind zur Zeit in der Norm DIN 1952 genormt. Sie besitzen ein bestimmtes Durchmesserverhältnis, das im ausgeführten Zustand nicht verändert werden kann.Venturi nozzles are currently standardized in the DIN 1952 standard. They have a certain diameter ratio, that cannot be changed in the executed state.

Zur besseren Regelung/Steuerung von Fluid-, Gas- und Stoffströmungen wäre es von Vorteil, das Durchmesser­ verhältnis von Venturidüsen während des Betriebes ver­ ändern zu können.For better regulation / control of fluid, gas and Material flows, the diameter would be an advantage ratio of Venturi nozzles during operation ver to be able to change.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß ein Schlauch aus hochelastischem Material bestimmter Länge und bestimmten Durchmessers in ein starres Rohr mit größerem Innendurchmesser und größerer Länge gelegt und so an den Enden über das Rohr gezogen und befestigt wird, daß sich Zugspannungen im Schlauch ergeben.This object is achieved in that a hose made of highly elastic material certain Length and specific diameter in a rigid Pipe with a larger inner diameter and longer length placed and pulled at the ends over the pipe and is attached that there are tensile stresses in the hose.

Es entsteht annähernd eine Stromröhre in Form einer Venturi-Düse, mit gerundetem Einlauf, einer konti­ nuierlichen Verengung auf den engsten Querschnitt, einem achsparallelen kurzen Stück mit engstem Querschnitt und einer kontinuierlichen Erweiterung mit gerundetem Auslauf.It almost creates a current tube in the form of a Venturi nozzle, with rounded inlet, one continuous narrowing to the narrowest cross-section, an axially parallel short piece with the narrowest Cross section and a continuous expansion with rounded spout.

Das Rohr wird radial in der Mitte mit einer Gewindebohrung versehen, in der ein Schlauchnippel für eine Unter­ druckleitung befestigt wird.The tube is radial in the middle with a threaded hole provided in a hose nipple for a sub pressure line is attached.

Wenn man aus dem Raum, der sich zwischen dem umgebenden Rohr und dem Schlauch ergibt, die enthaltene Luft absaugt, erweitert sich die Stromröhre entsprechend der Menge der abgesaugten Luft kontinuierlich, bis der Schlauch vollständig an der Innenwand des Rohres anliegt.If you look out of the space that is between the surrounding Pipe and the hose results in the contained air sucks, the current tube expands accordingly the amount of air extracted continuously until the The hose lies completely against the inner wall of the pipe.

Durch Belüften des vakuumierten Raumes läßt sich die ursprüngliche Form der Düse wiederherstellen.By ventilating the vacuumed room, the restore the original shape of the nozzle.

Das bedeutet, daß sich mit Hilfe definierter Unter­ drücke jedes beliebige Durchmesserverhältnis realisieren läßt.That means that with the help of defined sub express any diameter ratio can be realized.

Die Erzeugung des Vakuums läßt sich mit Hilfe eines handelsüblichen, einfach wirkenden Pneumatikzylinders leicht verwirklichen; die dabei notwendigen Kräfte können durch Hebelübersetzungen klein gehalten werden. The vacuum can be generated using a commercially available, single-acting pneumatic cylinder easily realized; the necessary forces can be kept small by lever ratios.  

Da sich der Eintrittsradius und der Verengungswinkel durch Variation der auf den Schlauch aufgebrachten Zugspannungen in weiten Grenzen verändern lassen, und auch das Durchmesserverhältnis frei wählbar ist, kann die regelbare Venturidüse an die verschiedensten Einsatzbedingungen angepaßt werden.Because the entry radius and the narrowing angle by varying the amount applied to the hose Let tensile stresses change within wide limits, and the diameter ratio is also freely selectable, the adjustable Venturi nozzle can be used on a wide variety of Operating conditions are adjusted.

Als weiterer Parameter kann die Rohrlänge beliebig gewählt werden.The tube length can be any other parameter to get voted.

Als letzter Parameter sei die Möglichkeit genannt, durch zeitliche Veränderung des Vakuums eine zeit­ abhängige Variation des Durchmesserverhältnisses zu erreichen, sei es kontinuierlich, sprunghaft oder schrittweise.The last parameter is the possibility by changing the vacuum over time dependent variation of the diameter ratio to achieve, be it continuously, erratically or gradually.

Die Medien, die mit Hilfe der Düse geregelt werden, können gasförmig oder flüssig sein; Schüttgüter kleiner Korngröße wie Getreide oder Granulat sind auch möglich.The media that are regulated with the help of the nozzle can be gaseous or liquid; Bulk goods small grain size such as grain or granules also possible.

Anwendungsgebiete gibt es also nicht nur in der Strömungstechnik, sondern auch in der Hydraulik, der Pneumatik, der Regelungstechnik und in der Verpackungsindustrie.Areas of application are therefore not only in the Fluid technology, but also in hydraulics, pneumatics, control engineering and Packaging industry.

Die Vorteile der regelbaren Venturi-Düse ergeben sich ausThe advantages of the adjustable Venturi nozzle result from

  • - der guten Regelbarkeit,- good controllability,
  • - der strömungstechnisch günstigen Form,- the aerodynamically favorable shape,
  • - der einfachen Herstellung,- simple manufacture,
  • - der leichten Austauschbarkeit gegen bestehende Systeme,- The easy interchangeability with existing ones Systems,
  • - der einfachen Montage,- easy assembly,
  • - der einfachen Wartung,- simple maintenance,
  • - den niedrigen Herstellungskosten,- the low manufacturing costs,
  • - der einfachen mechanischen Regelbarkeit mittels handelsüblicher Pneumatikzylinder,- The simple mechanical controllability by means of standard pneumatic cylinder,
  • - der Möglichkeit der Verwendung eines vorhandenen Unterdruckes zur Regelung,- the possibility of using an existing one Negative pressure for regulation,
  • - den vielfältigen Einsatzmöglichkeiten,- the various possible uses,
  • - den in weiten Grenzen veränderbaren Abmessungen.- The dimensions, which can be changed within wide limits.

Ersetzt werden können unter anderem die folgenden Regel­ einrichtungen:Among other things, the following rule can be replaced facilities:

  • - Drosselklappen in KFZ-Motoren- Throttle valves in car engines
  • - Registerstufen in Registervergasern- Register levels in register gasifiers
  • - Lufttrichter mit verändlichem Querschnitt- Air funnel with variable cross-section
  • - Drosselschieber in Rohrleitungen.- Throttle valve in pipelines.

Die in der Zeichnung mit folgenden Nummern bezeichneten Einzelteile (Figuren) der Venturidüse sind:The numbers indicated in the drawing with the following numbers Individual parts (figures) of the Venturi nozzle are:

  • 1 - Rohr1 - pipe
  • 2 - Schlauch2 - hose
  • 3 - Bohrung für Schlauchnippel3 - Hole for hose nipple
  • 4 - Einbaustellen der Befestigungsschellen.4 - Installation locations of the fastening clamps.

Claims (2)

1. Regelbare Venturi-Düse für Stoffströmungen, dadurch gekennzeichnet, daß sich das Durchmesser­ verhältnis während des Betriebes verändern läßt. 1. Adjustable Venturi nozzle for material flows, characterized in that the diameter ratio can be changed during operation. 2. Die Regelung der Venturi-Düse nach Anspruch 1, dadurch gekennzeichnet, daß durch Erzeugen definierter Unterdrücke das Durchmesserverhältnis kontinuierlich, sprunghaft oder schrittweise verändert werden kann.2. The control of the venturi nozzle according to claim 1, characterized in that defined by generating Continuously suppress the diameter ratio, can be changed by leaps and bounds.
DE19863634539 1986-10-10 1986-10-10 Variable venturi nozzle Granted DE3634539A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863634539 DE3634539A1 (en) 1986-10-10 1986-10-10 Variable venturi nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863634539 DE3634539A1 (en) 1986-10-10 1986-10-10 Variable venturi nozzle

Publications (2)

Publication Number Publication Date
DE3634539A1 true DE3634539A1 (en) 1988-04-21
DE3634539C2 DE3634539C2 (en) 1989-11-16

Family

ID=6311455

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863634539 Granted DE3634539A1 (en) 1986-10-10 1986-10-10 Variable venturi nozzle

Country Status (1)

Country Link
DE (1) DE3634539A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4127886A1 (en) * 1991-08-22 1993-02-25 Abrex Oberflaechentechnik Gmbh Nozzle head for high pressure sand blaster plant - has housing block with blasting material supply, and concentric pressurised water supply
DE102006010946B3 (en) * 2006-03-04 2007-06-21 Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung Stiftung des öffentlichen Rechts Outside air temperature measuring apparatus with device for reducing false measurement due to strong winds
CN102861682A (en) * 2012-09-19 2013-01-09 西北农林科技大学 Pressure automatic variable diameter spray head
US8703869B2 (en) 2009-03-26 2014-04-22 Bayer Materialscience Ag Impact-modified polycarbonate compositions for the production of metallised mouldings with homogeneous surface gloss
CN108562339A (en) * 2018-04-08 2018-09-21 江阴市节流装置厂有限公司 A kind of Venturi tube flow rate-measuring device
CN116785475A (en) * 2023-08-21 2023-09-22 山东高速建筑设计有限公司 Intelligent public toilet disinfection and purification system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2501359A1 (en) * 1975-01-15 1976-07-22 Allied Polymer Group Ltd Deformable wall type venturi attachment - has slotted deformable wall to allow variation of pipe cross section
DE3210738A1 (en) * 1982-03-24 1983-10-06 Ridder & Arens Nozzle for fluid-carrying lines or the like
DE8427576U1 (en) * 1984-09-19 1985-02-21 Moser, Karl, 7474 Bitz DEVICE FOR SPRAYING SURFACES

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2501359A1 (en) * 1975-01-15 1976-07-22 Allied Polymer Group Ltd Deformable wall type venturi attachment - has slotted deformable wall to allow variation of pipe cross section
DE3210738A1 (en) * 1982-03-24 1983-10-06 Ridder & Arens Nozzle for fluid-carrying lines or the like
DE8427576U1 (en) * 1984-09-19 1985-02-21 Moser, Karl, 7474 Bitz DEVICE FOR SPRAYING SURFACES

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4127886A1 (en) * 1991-08-22 1993-02-25 Abrex Oberflaechentechnik Gmbh Nozzle head for high pressure sand blaster plant - has housing block with blasting material supply, and concentric pressurised water supply
DE102006010946B3 (en) * 2006-03-04 2007-06-21 Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung Stiftung des öffentlichen Rechts Outside air temperature measuring apparatus with device for reducing false measurement due to strong winds
US8703869B2 (en) 2009-03-26 2014-04-22 Bayer Materialscience Ag Impact-modified polycarbonate compositions for the production of metallised mouldings with homogeneous surface gloss
CN102861682A (en) * 2012-09-19 2013-01-09 西北农林科技大学 Pressure automatic variable diameter spray head
CN102861682B (en) * 2012-09-19 2014-07-30 西北农林科技大学 Pressure automatic variable diameter spray head
CN108562339A (en) * 2018-04-08 2018-09-21 江阴市节流装置厂有限公司 A kind of Venturi tube flow rate-measuring device
CN108562339B (en) * 2018-04-08 2020-08-18 江阴市节流装置厂有限公司 Venturi tube flow measuring device
CN116785475A (en) * 2023-08-21 2023-09-22 山东高速建筑设计有限公司 Intelligent public toilet disinfection and purification system
CN116785475B (en) * 2023-08-21 2023-11-07 山东高速建筑设计有限公司 Intelligent public toilet disinfection and purification system

Also Published As

Publication number Publication date
DE3634539C2 (en) 1989-11-16

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: RIEKHOF, PETER, 3340 ADERSHEIM, DE

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee