DE2165609A1 - OPERATION OF A VIBRATION SYSTEM FOR LIQUID ATOMIZATION - Google Patents
OPERATION OF A VIBRATION SYSTEM FOR LIQUID ATOMIZATIONInfo
- Publication number
- DE2165609A1 DE2165609A1 DE2165609A DE2165609A DE2165609A1 DE 2165609 A1 DE2165609 A1 DE 2165609A1 DE 2165609 A DE2165609 A DE 2165609A DE 2165609 A DE2165609 A DE 2165609A DE 2165609 A1 DE2165609 A1 DE 2165609A1
- Authority
- DE
- Germany
- Prior art keywords
- frequency
- alternating voltage
- series resonance
- plate
- resonance frequency
- 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.)
- Pending
Links
- 238000009688 liquid atomisation Methods 0.000 title description 2
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims description 3
- 230000005284 excitation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0623—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
- B05B17/063—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn having an internal channel for supplying the liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0623—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0653—Details
- B05B17/0676—Feeding means
- B05B17/0684—Wicks or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/50—Application to a particular transducer type
- B06B2201/55—Piezoelectric transducer
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Special Spraying Apparatus (AREA)
Description
Betrieb eines Schwingsystems zur Flüssigkeitszerstäubung Zusatz zu Patent . ... ... (P 20 32 433.8-51) Die Erfindung bezieht sich auf den Betrieb eines mit elektrischer Wechselspannung zu erregenden piezoelektrischen Schwingsystems nach dem Hauptpatent (-anmeldung) P 20 32 453.8 vom 30.6.1970.Operation of an oscillating system for liquid atomization addition to Patent. ... ... (P 20 32 433.8-51) The invention relates to the operation of a Piezoelectric oscillating system to be excited with electrical alternating voltage according to the main patent (application) P 20 32 453.8 of June 30, 1970.
In dem Hauptpatent ist ein Schwingsystem mit einem zu Biegeschwingungen anzuregenden Koppelschwinger aus einer Platte mit daran befestigtem piezoelektrischen Wandler und mit einer zu Biegeschwingungen anzuregenden weiteren Platte, die durch einen mechanischen Kopplungssteg mit geringerem Querschnitt mit dem Koppelschwinger mechanisch gekoppelt ist, beschrieben, wobei der Koppelschwinger und die weitere Platte bezüglich ihrer Biegeresonanz aufeinander abgestimmt sind.In the main patent is a vibration system with a flexural vibration coupling oscillator to be excited from a plate with attached piezoelectric Converter and with another plate to be excited to flexural vibrations, which through a mechanical coupling bar with a smaller cross-section with the coupling oscillator is mechanically coupled, described, the coupling oscillator and the further Plate are matched to one another in terms of their flexural resonance.
In weiteren Patentanmeldungen P 21 29 664.0-und P 21 29 718.7 vom 15.6.1971 sind Anordnungen und Verfahren zur Anregung eines wie oben angegebenen Schwingsystems näher beschrieben.In other patent applications P 21 29 664.0 and P 21 29 718.7 from 6/15/1971 are arrangements and procedures for the stimulation of one as specified above Schwingsystem described in more detail.
In der Patentanmeldung P 21 29 665.1. vom 15.6.1971 ist eine Vorrichtung zum Betrieb des obengenannten Schwingsystems als Flüssigkeitszerstäuber beschrieben. Der vorliegenden Erfindung liegt die Aufgabe zugrunde-, für ein wie in den obengenannten Patentanmeldungen beschriebenes Schwingsystem eine Betriebsweise anzugeben, mit der die Tröpfchengröße der zu zerstäubenden Flüssigkeit steuerbar gewählt werden kann.In the patent application P 21 29 665.1. from June 15, 1971 is a device for the operation of the above-mentioned oscillating system as a liquid atomizer. The present invention is based on the object for one as in the above Patent applications described vibration system to indicate a mode of operation with which the droplet size of the liquid to be atomized can be selected to be controllable can.
Diese Aufgabe wird bei einem wie eingangs angegebenen Schwingsystem erfindungsgemäß dadurch gelöst, daß die Frequenz der an das Schwingsystem anzulegenden anregenden Wechselspannung von der Reihenresonanzfrequenz des mit Flüssigkeit nicht belasteten Schwingsystems abweichend groß gewählt wird. Vorzugsweise wird die Frequenz der anzuregenden Wechselspannung kleiner als diese Reihenresoananzfrequenz gewählt.This task is performed with an oscillating system as mentioned at the beginning solved according to the invention in that the frequency to be applied to the oscillating system exciting alternating voltage of the series resonance frequency of the with Liquid not loaded vibration system is chosen differently large. Preferably the frequency of the alternating voltage to be excited becomes smaller than this series resonance frequency chosen.
Der Erfindung-lag die folgende Beobachtung zugrunde: Beim Betrieb eines wie oben angegebenen Schwingsystems mit angelegter elektrischer Wechselspannung wurde festgestellt, daß sich mit zunehmend kleinerer Frequenz der anregenden Wechselspannung, bezogen auf die Reihenresonanzfrequenz des nicht belasteten Schwingsystems, bei einer Zerstäubung von Flüssigkeit eine zunehmend kleinere Tröpfchengröße erreichen läßt. Ge-Ringe Tröpfchengröße ist insbesondere für die Zerstäubung von Wasser zum Zwecke der Luftbefeuchtung von großem Interesse.The invention was based on the following observation: During operation an oscillating system as specified above with applied electrical alternating voltage it was found that the lower the frequency of the exciting alternating voltage, based on the series resonance frequency of the unloaded oscillating system an atomization of liquid achieve an increasingly smaller droplet size leaves. Ge rings droplet size is particularly useful for atomizing water Humidification purposes are of great interest.
Die Reihenresonanzfrequenz ist die mechanische Schwingungsfrequenz des Schwingsystems bei elektrisch kurz geschlossenem Wandler. Vorzugsweise liegt sie im Bereich von 100 kHz.The series resonance frequency is the mechanical oscillation frequency of the oscillation system with an electrically short-circuited converter. Preferably lies they are in the range of 100 kHz.
Für die erfindungsgemäß zu wählende Abweichung der Anregungsfrequenz von der genannten Reihenresonanzfrequenz erwies sich eine Verringerung bis zu 10 % und insbesondere zwischen 5 und 10 % als besonders vorteilhaft für die Erzeugung eines besonders feinen Flüssigkeitsnebels.For the deviation of the excitation frequency to be selected according to the invention a reduction of up to 10 was found from the series resonance frequency mentioned % and in particular between 5 and 10% as particularly advantageous for the production a particularly fine liquid mist.
Die Figur 1 zeigt ein Schwingsystem nach dem Hauptpatent mit einem Koppelschwinger bestehend aus dem piezoelekttischen Wandler 1, vorzugsweise aus piezoelektrischer Keramik, und der Platte 2. Die weitere Platte 4 ist über einen Kopplungssteg 3 mit geringerem Querschnitt mit dem Koppelschwinger mechanisch verbunden. Zum Anschluß der elektrischen Wechselspannung ist auf dem Wandler 1 eine Elektrode 21 angeordnet. Mit 11 sind Zuleitungen zur Zuführung der anregenden elektrischen Wechselspannung bezeichnet. Als zweite Elektrode dient hier -die Platte 2 bzw. der Kegelstumpf 5.Figure 1 shows an oscillating system according to the main patent with a Coupling oscillator consisting of the piezoelectric transducer 1, preferably from piezoelectric ceramic, and the plate 2. The other plate 4 is a Coupling web 3 with a smaller cross-section mechanically connected to the coupling oscillator. To connect the electrical alternating voltage, there is an electrode on the converter 1 21 arranged. With 11 supply lines for supplying the stimulating electrical Called alternating voltage. The plate 2 or the plate 2 serves as the second electrode Truncated cone 5.
Das in Figur 2 gezeigte Schwingsystem entspricht einer besonders bevorzugten Abwandlung nach dem Hauptpatent. Bei dieser Abwandlung ist der Kopplngssteg 3 mit der Platte 2 zu einem kegelstumpfförmigen Körper 5 zusammengefaßt. Im Zusammenhang mit der Figur 1 beschriebene Bezeichnungen stim--men mit denen in der Figur 2 überein. Mit 31 ist eine Quelle zur Erzeugung der zur Anregung dienenden elektrischen Wechselspannung bezeichnet. Erfindungsgemäß ist die Frequenz der von der Quelle 31 zu erzeugenden Wechsel Spannung einstellbar veränderlich. Mit 32 ist eine Rohrleitung bezeichnet, durch~ die hindurch mittels einer Pumpe 33 aus einem flüssigkeitsbehälter 54 Flüssigkeit 35 der Oberfläche 41 der weiteren Platte 4 zugeführt wird. Bei angeregter Schwingu g des Schwingsystems wird die der Oberfläche 41 zugeführte Flüssigkeit 135 zerstäubt, und zwar zu einer Tröpfchengröße, die erfindungsgemäß der Frequenzabweichung der anregenden Wechselannung entspricht. Die Form der weiteren Platte 4 ist kreisrund oder kann auch elliptisch sein 2 Riguren 6 PatentansprücheThe oscillating system shown in FIG. 2 corresponds to a particularly preferred one Modification according to the main patent. In this modification, the coupling web 3 is with the plate 2 combined to form a frustoconical body 5. In connection The designations described with FIG. 1 correspond to those in FIG. 2. At 31 is a source for generating the electrical alternating voltage used for excitation designated. According to the invention, the frequency is that to be generated by the source 31 Change voltage adjustable changeable. A pipeline is denoted by 32, through the liquid by means of a pump 33 from a liquid container 54 35 of the surface 41 of the further plate 4 is fed. With excited Schwingu g of the oscillating system, the liquid 135 supplied to the surface 41 is atomized, to a droplet size that, according to the invention, corresponds to the frequency deviation of the corresponds to exciting alternating voltage. The shape of the further plate 4 is circular or can also be elliptical
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2165609A DE2165609A1 (en) | 1970-06-30 | 1971-12-30 | OPERATION OF A VIBRATION SYSTEM FOR LIQUID ATOMIZATION |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702032433 DE2032433C3 (en) | 1970-06-30 | Piezoelectric oscillating system, especially for liquid atomization | |
DE2165609A DE2165609A1 (en) | 1970-06-30 | 1971-12-30 | OPERATION OF A VIBRATION SYSTEM FOR LIQUID ATOMIZATION |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2165609A1 true DE2165609A1 (en) | 1973-07-12 |
Family
ID=25759365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2165609A Pending DE2165609A1 (en) | 1970-06-30 | 1971-12-30 | OPERATION OF A VIBRATION SYSTEM FOR LIQUID ATOMIZATION |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2165609A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2934732C2 (en) * | 1979-08-28 | 1983-12-01 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Dosing device for inhalants |
FR2927238A1 (en) * | 2008-02-13 | 2009-08-14 | Oreal | SPRAY DEVICE COMPRISING A SOUNDRODE |
US8430338B2 (en) | 2008-02-13 | 2013-04-30 | L'oreal | Spray head including a sonotrode with a composition feed channel passing therethrough |
US8746586B2 (en) | 2008-02-13 | 2014-06-10 | L'oreal | Device for spraying a cosmetic composition while blowing hot or cold air |
-
1971
- 1971-12-30 DE DE2165609A patent/DE2165609A1/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2934732C2 (en) * | 1979-08-28 | 1983-12-01 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Dosing device for inhalants |
FR2927238A1 (en) * | 2008-02-13 | 2009-08-14 | Oreal | SPRAY DEVICE COMPRISING A SOUNDRODE |
EP2090378A3 (en) * | 2008-02-13 | 2009-09-30 | L'oreal | Spraying device comprising a sonotrode |
US8430338B2 (en) | 2008-02-13 | 2013-04-30 | L'oreal | Spray head including a sonotrode with a composition feed channel passing therethrough |
US8556191B2 (en) | 2008-02-13 | 2013-10-15 | L'oreal | Spray head including a sonotrode |
US8746586B2 (en) | 2008-02-13 | 2014-06-10 | L'oreal | Device for spraying a cosmetic composition while blowing hot or cold air |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OHA | Expiration of time for request for examination |