DE4417709A1 - Liquid atomiser using pressurised air - Google Patents
Liquid atomiser using pressurised airInfo
- Publication number
- DE4417709A1 DE4417709A1 DE19944417709 DE4417709A DE4417709A1 DE 4417709 A1 DE4417709 A1 DE 4417709A1 DE 19944417709 DE19944417709 DE 19944417709 DE 4417709 A DE4417709 A DE 4417709A DE 4417709 A1 DE4417709 A1 DE 4417709A1
- Authority
- DE
- Germany
- Prior art keywords
- liquid
- air
- liq
- injected
- pump
- 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- Withdrawn
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
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
Abstract
Description
Das Zerstäuben von Flüssigkeiten ist Voraussetzung bei einer Viel zahl chemisch-technischer Prozesse. In den meisten Fällen ist die Charakteristik des erzeugten Nebels von entscheidender Bedeutung. Diese wird entscheidend bestimmt vom Aufbau der verwendeten Düse. Das Erzeugen feinsten Nebels einer aggressiven Flüssigkeit stellte bisher ein nicht gelöstes Problem dar. Im folgenden wird ein neuartiger Ver nebler vorgestellt, der unter Verwendung inerten Materials dazu in der Lage ist.The atomization of liquids is a prerequisite for a lot number of chemical-technical processes. In most cases it is Characteristic of the fog generated is of crucial importance. This is decisively determined by the structure of the nozzle used. The Generating the finest fog of an aggressive liquid posed so far represents an unresolved problem. In the following a new Ver nebler, which uses inert material for this purpose able.
Aus der Vielzahl industriell gefertigter Düsen sind nur wenige in der chemischen Technik verwendbar, da hier meist mit aggressiven Flüssig keiten respektive Gasen gearbeitet wird. Benötigt man zusätzlich ei nen Sprühstrahl mit extrem kleinen Tropfen, so steht man vor einer schwer zu lösenden Aufgabe. Düsen aus Metall, wie man sie beispiels weise aus Spritzpistolen für Lackierungen kennt, verboten sich aus mangelnder chemischen Inertheit des Werkstoffs. Aus Glas gefertigte selbstansaugende "Sprüher", bei denen das zuletzt genannte Problem nicht auftaucht, erzeugen zu große Tropfen, so daß auch sie nicht in Frage kamen. Es lag deshalb nahe, einen leistungsfähigeren, aus Glas gefertigten "Sprüher" zu entwickeln, welcher im folgenden vorgestellt wird.Only a few of the large number of industrially manufactured nozzles are in the chemical technology can be used, since mostly with aggressive liquid or gases. If you also need an egg spray with extremely small drops, that's how you stand in front of one difficult task to solve. Nozzles made of metal, as one example knows from spray guns for painting, forbidden themselves lack of chemical inertness of the material. Made of glass self-priming "sprayer" in which the latter problem does not appear, produce too large drops, so that they do not come in Question came. It was therefore obvious that a more powerful one made of glass developed "sprayer", which is presented below becomes.
Wie bei den üblichen Verneblern wird Preßluft durch eine Düse gelei tet. Der hierbei entstehende Druckluftstrahl liefert die Hauptenergie zum Zerstäuben der Flüssigkeit. Die Feinheit des Sprühstrahls und die Größe der Tropfen hängt vom Druck, d. h. der Geschwindigkeit, des Luftstrahls ab. Es besteht also eine Abhängigkeit vom Geschwindig keitsunterschied, mit der die beiden Medien Luft und Flüssigkeit auf einander treffen. Hierbei gilt, daß mit zunehmender Geschwindigkeits differenz das Tropfenspektrum zu kleineren Radien hin verschoben wird. Bei den handelsüblichen selbstansaugenden Sprühern ist die Ei gengeschwindigkeit der Flüssigkeit nahe Null, und die einzige zu va riierende Größe der Luftdurchsatz. Um nun eine möglichst große Ge schwindigkeits-Differenz zu erreichen, wurde es notwendig, vom Prin zip der Selbstansaugung abzugehen und der Flüssigkeit ebenfalls eine gerichtete Energie zu verleihen. As with the usual nebulizers, compressed air is delivered through a nozzle tet. The resulting compressed air jet provides the main energy to atomize the liquid. The delicacy of the spray jet and the Size of the drops depends on the pressure, i.e. H. the speed of the Air jet. So there is a dependence on speed difference with which the two media air and liquid meet each other. The rule here is that with increasing speed difference the drop spectrum shifted towards smaller radii becomes. With the commercially available self-priming sprayers, the egg is liquid velocity close to zero, and the only one above all riizing size of air flow. To get the largest possible Ge speed difference, it became necessary from the prin zip of self-priming and the liquid also one to give directed energy.
Bei der neuentwickelten Düse (Bild 1) wird die Flüssigkeit mit hoher Geschwindigkeit über eine extrem kleine Glaskapillare im Winkel von ca. 90° zum Luftstrahl eingespritzt. Dies geschieht mittels einer regelbaren handelsüblichen Schlauchpumpe (Bild 2).With the newly developed nozzle ( Fig. 1), the liquid is injected at high speed through an extremely small glass capillary at an angle of approx. 90 ° to the air jet. This is done using an adjustable, commercially available peristaltic pump ( Fig. 2).
Die kinetische Energie des Wasserstrahles wird so bemessen, daß er bis ins Zentrum des Luftstrahles gelangen kann. Dort kommt es durch den Zusammenprall der beiden Medien mit jeweils unterschiedlichen Energierichtungen zu einem optimalen Zerstäuben des Wasserstrahls. Es entsteht ein Vollkegelstrahl mit einem mittleren Tropfenradius von 5 µm, (Luftdurchsatz 10 l/min., verstäubte Wassermenge 8 ml/min). Das Mengenverhältnis ist beliebig einstellbar, wirkt sich aber auf das Tropfenspektrum bzw. den Wassergehalt aus.The kinetic energy of the water jet is measured so that it can get to the center of the air jet. It gets through there the clash of the two media, each with a different one Energy directions for optimal atomization of the water jet. It creates a full cone beam with an average drop radius of 5 µm, (Air flow 10 l / min., Amount of water sprayed 8 ml / min). The Quantity ratio can be set as desired, but affects this Drop spectrum or the water content.
Die Preßluftdüse besitzt einen Innendurchmesser von ca. 1 mm. Mit einer geeigneten Regelmechanik stellt es kein Problem dar, die Düse auch mechanisch verstellbar zu betreiben.The compressed air nozzle has an inner diameter of approx. 1 mm. With With a suitable control mechanism, the nozzle is not a problem also operate mechanically adjustable.
Das Ende der Flüssigkeitskapillare sollte möglichst nahe am Ausgang der Preßluftdüse liegen, da dort die Luftgeschwindigkeit am höchsten ist. Sie muß nicht bis in den Preßluftstrahl hineinragen.The end of the liquid capillary should be as close as possible to the exit the compressed air nozzle because the air speed is highest there is. It does not have to protrude into the compressed air jet.
Da alle Teile des Zerstäubers aus Glas gefertigt werden können und die benötigte Schlauchpumpe mit Kunststoffschläuchen arbeitet, ist es möglich, auch konzentrierte Säuren und Laugen zu versprühen.Since all parts of the atomizer can be made of glass and the hose pump required works with plastic hoses, it is possible to spray even concentrated acids and bases.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944417709 DE4417709A1 (en) | 1994-05-20 | 1994-05-20 | Liquid atomiser using pressurised air |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944417709 DE4417709A1 (en) | 1994-05-20 | 1994-05-20 | Liquid atomiser using pressurised air |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4417709A1 true DE4417709A1 (en) | 1995-11-30 |
Family
ID=6518583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19944417709 Withdrawn DE4417709A1 (en) | 1994-05-20 | 1994-05-20 | Liquid atomiser using pressurised air |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4417709A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5943858A (en) * | 1995-05-19 | 1999-08-31 | Siemens Aktiengesellschaft | Premixing chamber for an exhaust gas purification system |
DE10152430C1 (en) * | 2001-10-24 | 2003-04-03 | Climarotec Ges Fuer Raumklimat | Device used in air-conditioning systems for evaporating a liquid comprises an evaporating chamber connected downstream of a cloud chamber and into which a liquid mist is completely transferred into the gas phase using additional diluent air |
DE102009014410A1 (en) | 2008-03-31 | 2009-10-01 | Etag Production Gmbh | Waste treatment plant for generating electric energy from combustion gases, has gasifier oven with upper, middle and lower section in connection with gas condenser, in connection with turbine module |
CH713113A1 (en) * | 2016-11-08 | 2018-05-15 | Chemspeed Tech Ag | Spray method for coating a substrate with a substance atomized in a gas stream. |
-
1994
- 1994-05-20 DE DE19944417709 patent/DE4417709A1/en not_active Withdrawn
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5943858A (en) * | 1995-05-19 | 1999-08-31 | Siemens Aktiengesellschaft | Premixing chamber for an exhaust gas purification system |
DE10152430C1 (en) * | 2001-10-24 | 2003-04-03 | Climarotec Ges Fuer Raumklimat | Device used in air-conditioning systems for evaporating a liquid comprises an evaporating chamber connected downstream of a cloud chamber and into which a liquid mist is completely transferred into the gas phase using additional diluent air |
DE102009014410A1 (en) | 2008-03-31 | 2009-10-01 | Etag Production Gmbh | Waste treatment plant for generating electric energy from combustion gases, has gasifier oven with upper, middle and lower section in connection with gas condenser, in connection with turbine module |
CH713113A1 (en) * | 2016-11-08 | 2018-05-15 | Chemspeed Tech Ag | Spray method for coating a substrate with a substance atomized in a gas stream. |
WO2018085950A1 (en) * | 2016-11-08 | 2018-05-17 | Chemspeed Technolgies Ag | Spraying process for coating a substrate |
CN109922892A (en) * | 2016-11-08 | 2019-06-21 | 凯米斯彼得技术股份公司 | The spraying method of coated substrate |
CN109922892B (en) * | 2016-11-08 | 2021-12-31 | 凯米斯彼得技术股份公司 | Spray coating method for coating a substrate |
US11241704B2 (en) | 2016-11-08 | 2022-02-08 | Chemspeed Technologies Ag | Spraying process for coating a substrate |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ON | Later submitted papers | ||
8110 | Request for examination paragraph 44 | ||
8127 | New person/name/address of the applicant |
Owner name: CLIMAROTEC GESELLSCHAFT FUER RAUMKLIMATISCHE SPEZI |
|
8181 | Inventor (new situation) |
Free format text: HAUNOLD, WERNER, 60431 FRANKFURT, DE |
|
8130 | Withdrawal |