EP0251524A2 - Ultrasonic atomizing vibratory element - Google Patents
Ultrasonic atomizing vibratory element Download PDFInfo
- Publication number
- EP0251524A2 EP0251524A2 EP87305111A EP87305111A EP0251524A2 EP 0251524 A2 EP0251524 A2 EP 0251524A2 EP 87305111 A EP87305111 A EP 87305111A EP 87305111 A EP87305111 A EP 87305111A EP 0251524 A2 EP0251524 A2 EP 0251524A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- fuel
- vibratory element
- ultrasonic atomizing
- edged
- 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
Links
Images
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
-
- 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
Definitions
- the present invention relates generally to an ultrasonic atomizing apparatus, and particularly to a vibrating element for use with an ultrasonic atomizing apparatus for atomizing liquid either intermittently or continuously.
- Such an element may be effectively used with (1) automobile fuel injection devices such as electronically controlled gasoline injection valves and electronically controlled diesel fuel injection valves, (2) gas turbine fuel nozzles, (3) burners for use on industrial, commercial and domestic boilers, heating furnaces and heating devices, (4) industrial liquid atomizers such as drying atomizers for drying liquid materials such as foods, medicines, agricultural chemicals, fertilizers and the like, spray heads for controlling temperature and humidity, atomizers for calcining powders (pelletizing ceramic), spray coating devices and reaction promoting devices, and (5) liquid atomizers for uses other than industrial ones, such as spreaders for agricultural chemicals and antiseptic solution.
- automobile fuel injection devices such as electronically controlled gasoline injection valves and electronically controlled diesel fuel injection valves, (2) gas turbine fuel nozzles, (3) burners for use on industrial, commercial and domestic boilers, heating furnaces and heating devices
- liquid herein used is intended to mean not only liquid but also various liquid materials such as a suspension, a solution or the like.
- the liquid is atomized by virtue of the shearing action between the liquid injected from the nozzles and the ambient air (atmospheric air). Accordingly, in order to atomize the liquid supplied, it is required to increase the liquid supply pressure, resulting in making the liquid supplying facility such as pumps, piping and the like complicated and large-sized ones.
- regulation of the flow rate of injection is effected by varying either the pressure of the liquid supplied or the area of the nozzle injecting port.
- the former method provides poor liquid atomization at a low flow rate (under a low pressure), as a remedy for which air or steam has additionally been used on medium-sized or large-sized boilers to aid in atomization of the liquid fuel supplied. And therefore apparatus become more and more complicated and enlarged.
- the conventional ultrasonic liquid injection nozzle cannot be used in circumstances which require a large amount of atomized liquid because it has extremely small capacity for pulverization.
- the present invention relates to improvements in the ultrasonic atomizing apparatus described above, and particularly to improvements in the vibrating element for use with the atomizing apparatus.
- an object of the present invention is to provide an ultrasonic atomizing vibratory element which is capable of accomplishing satisfactorily either continuous or intermittent liquid supply.
- Another object of the present invention is to provide an ultrasonic atomizing vibratory element which is capable of stably and effectivly atomizing liquid either in a large amount or a small amount and therefore providing an extremely large turn-down ratio as well as mixing the atomized liquid with air for combustion, particularly in fuel injection nozzles for use in domestic heating boilers, gas turbines, automobiles and the like.
- a further object of the present invention is to provide an ultrasonic atomizing vibratory element which is capable of accomplishing stable atomization without fluctuating the states of atomization (flow rate and particle size) of the supplied liquid.
- the element of the present invention may be suitably used for a horizontally disposed combustor.
- the present invention provides an ultrasonic atomizing vibratory element comprising an elongated shank and an edged portion which has at least one flat portion stepwise formed at the tip of the elongated shank, the flat portion of said edged portion being supplied with liquid to atomize said liquid.
- FIG. 1 of the accompanying drawings is a fragmentary perspective view of an embodiment of an ultrasonic atomizing vibratory element in accordance with the present invention
- FIG. 2 being a sectional view of a conventional ultrasonic atomizing apparatus which will be described in detail, by way of comparison.
- the conventional apparatus namely, a fuel atomizer 1 for use with a kerosene heater used as a burner for a domestic heater, for example, is provided with a vibrating element 10 in a sideways position.
- the vibrating element 10 includes a body portion 12 positioned on the right in this embodiment, an elongated, cylindrical shank 14 of the vibrating element having a diameter smaller than that of the body portion 12 and a transition portion 16 connecting the body portion 12 and the shank 14.
- the body portion 12 is provided with an enlarged diameter flange 18 which is supported by a holder 20, and the vibrating element 10 is secured to a heater body (not shown) through the holder 20.
- the tip of the vibrating element 10, that is, the tip on the left of the shank 14 in this embodiment is formed with an edged portion 22.
- one or more fuel supplying pipes 30 are disposed adjacent to the edged portion 22 of the shank 14, which feed the fuel to the edged portion 22.
- the fuel supplying pipes are supplied with the liquid fuel from a fuel supplying source (not shown) through external supplying lines (not shown).
- the flow and flow rate of fuel are controlled by supplying valves (not shown) disposed in the external supplying lines.
- the vibrating element 10 is continuously vibrated by an ultrasonic vibration generating means 100 operatively connected to the body portion 12. Accordingly, liquid fuel is supplied through the lines, the supplying valves and the supplying pipes 30, to the edged portion 22 where the fuel is atomized and outwardly injected.
- the edged portion 22 of the vibrating element 1 is usually formed either with four annular steps having progressively increased diameters or with a plurality of annular steps having equal diameters as shown.
- the atomizing apparatus having such construction operates extremely effectively.
- the present inventors have found that the atomizing apparatus such as fuel injection nozzles for use with a boiler, a gas turbine or an automobile, and the like in which the flow rate and thus supplying speed of fuel varies in response to the running load has various drawbacks.
- a part of the fuel may fall in drops without being fed to the edged portion, or the particle size of the liquid being pulverized may be increased.
- Fig. 1 merely shows an edged portion 22 at the tip of the vibratory element of the atomizer.
- the edged portion 22 of a vibrating element 10 is formed with a plurality of flat portions 24 and 26 which are stepwise formed at the tip of the vibrating element 10 (or the edged portion 22) and progressively reduced in the height of step in the direction from right to left in Fig. 1 in the present embodiment.
- the shape of the edged portion 22 as seen in the direction indicated by arrow X is suitably a circular shape but is not limited to such a shape.
- the edged portion is formed with two flat portions, namely a first flat portion 24 and a second flat portion 26 but the configuration of the edged portion 22 is not limited to this two step configuration and may comprise one step or more than two such steps.
- flat portions 24 and 26 are separately formed in horizontal planes in the present embodiment, they may be formed in planes slanted in any direction other than horizontal, if desired. Further additionally more, respective flat portions may be slanted in different directions.
- a shank 14 of vibrating element 10 is formed with a groove 28 in the outer periphery of the shank 14 which groove receives fuel from a fuel supplying pipe 30.
- the groove 28 is adapted to guide the fuel along the shank to the first stage flat portion 24.
- the groove 28 is progressively enlarged in cross-section from an upstream portion 28 a which receives the fuel discharged out of the fuel supplying pipe 30 to a downstream portion 28 b whereat the fuel is discharged to the flat portion 24.
- the bottom surface of the groove is inclined downwardly in the direction from the fuel receiving portion 28 a to the fuel discharging portion 28 b , to facilitate the flow of the fuel along the groove.
- the groove may be of a U-shaped or V-shaped cross-section.
- the fuel which is supplied to the shank 14 of the vibrating element may be guided by the groove 28 to flow efficiencly to the first flat portion 24.
- the fuel which is supplied to the first flat portion 24 may be spread over the first flat portion resulting in increasing the contacting area of the fuel and the edged portion.
- the fuel may be atomized at the flat portion 24 and its peripheral edges.
- the surplus fuel which is not atomized at the first flat portion 24 flows from the first flat portion to the second flat portion 26 to be again spread over the second flat portion 26 and to be atomized at the second flat portion and its peripheral edges.
- the present invention accomplishes an increased efficiency of pulverization and cooling of supply liquid.
- the ultrasonic atomizing vibratory element can stably and efficiently atomize either a large amount of, or a small amount of, liquid at the flat portion(s) formed in the edged portion, and resulting in providing a large turn down ratio and eliminating the problem of falling of the liquid in droplets.
- the vibratory element of Fig. 1 can accomplish consistent liquid atomization in that there is no substantial change in the conditions of atomization (flow rate and particle size), so that particularly the vibratory element of Fig. 1 may effectively be used in a horizontal combustor.
Abstract
Description
- The present invention relates generally to an ultrasonic atomizing apparatus, and particularly to a vibrating element for use with an ultrasonic atomizing apparatus for atomizing liquid either intermittently or continuously. Such an element may be effectively used with (1) automobile fuel injection devices such as electronically controlled gasoline injection valves and electronically controlled diesel fuel injection valves, (2) gas turbine fuel nozzles, (3) burners for use on industrial, commercial and domestic boilers, heating furnaces and heating devices, (4) industrial liquid atomizers such as drying atomizers for drying liquid materials such as foods, medicines, agricultural chemicals, fertilizers and the like, spray heads for controlling temperature and humidity, atomizers for calcining powders (pelletizing ceramic), spray coating devices and reaction promoting devices, and (5) liquid atomizers for uses other than industrial ones, such as spreaders for agricultural chemicals and antiseptic solution.
- Pressure atomizing burners or liquid atomizers have been heretofore used to atomize liquid in the various fields of art as mentioned above. The term "liquid" herein used is intended to mean not only liquid but also various liquid materials such as a suspension, a solution or the like. In the injection nozzles used on such spray burners and the liquid atomizers, the liquid is atomized by virtue of the shearing action between the liquid injected from the nozzles and the ambient air (atmospheric air). Accordingly, in order to atomize the liquid supplied, it is required to increase the liquid supply pressure, resulting in making the liquid supplying facility such as pumps, piping and the like complicated and large-sized ones.
- Further, regulation of the flow rate of injection is effected by varying either the pressure of the liquid supplied or the area of the nozzle injecting port. However, the former method provides poor liquid atomization at a low flow rate (under a low pressure), as a remedy for which air or steam has additionally been used on medium-sized or large-sized boilers to aid in atomization of the liquid fuel supplied. And therefore apparatus become more and more complicated and enlarged.
- On the other hand, the latter method requires an extremely intricate structure of nozzle which is troublesome to control and maintain.
- To improve the defects of such prior art injection nozzles, attempts have been made to impart ultrasonic waves to a liquid material as the liquid material is injected from the injection port of the injection nozzle under pressure.
- However, the conventional ultrasonic liquid injection nozzle cannot be used in circumstances which require a large amount of atomized liquid because it has extremely small capacity for pulverization.
- As a result of extensive researches and experiments conducted on the ultrasonic liquid atomizing mechanism and the configuration of the ultrasonic vibrating element so as to accomplish atomization of a large amount of liquid, the present applicants have found that by providing an edged portion at the end portion of an ultrasonic vibrating element and supplying liquid to the edged portion in a film form, a large quantity of liquid can be atomized at the edged portion, and have proposed an ultrasonic injection method and an injection nozzle on that basis (see European Patent Application No. 85302674.8).
- The present invention relates to improvements in the ultrasonic atomizing apparatus described above, and particularly to improvements in the vibrating element for use with the atomizing apparatus.
- Accordingly, an object of the present invention is to provide an ultrasonic atomizing vibratory element which is capable of accomplishing satisfactorily either continuous or intermittent liquid supply.
- Another object of the present invention is to provide an ultrasonic atomizing vibratory element which is capable of stably and effectivly atomizing liquid either in a large amount or a small amount and therefore providing an extremely large turn-down ratio as well as mixing the atomized liquid with air for combustion, particularly in fuel injection nozzles for use in domestic heating boilers, gas turbines, automobiles and the like.
- A further object of the present invention is to provide an ultrasonic atomizing vibratory element which is capable of accomplishing stable atomization without fluctuating the states of atomization (flow rate and particle size) of the supplied liquid. In particular, the element of the present invention may be suitably used for a horizontally disposed combustor.
- The present invention provides an ultrasonic atomizing vibratory element comprising an elongated shank and an edged portion which has at least one flat portion stepwise formed at the tip of the elongated shank, the flat portion of said edged portion being supplied with liquid to atomize said liquid.
- One way of carrying out the present invention will now be described in detail by way of example with reference to Fig. 1 of the accompanying drawings which is a fragmentary perspective view of an embodiment of an ultrasonic atomizing vibratory element in accordance with the present invention, FIG. 2 being a sectional view of a conventional ultrasonic atomizing apparatus which will be described in detail, by way of comparison.
- With reference first to Fig. 2, the conventional apparatus, namely, a
fuel atomizer 1 for use with a kerosene heater used as a burner for a domestic heater, for example, is provided with a vibratingelement 10 in a sideways position. The vibratingelement 10 includes abody portion 12 positioned on the right in this embodiment, an elongated,cylindrical shank 14 of the vibrating element having a diameter smaller than that of thebody portion 12 and atransition portion 16 connecting thebody portion 12 and theshank 14. Thebody portion 12 is provided with an enlargeddiameter flange 18 which is supported by aholder 20, and the vibratingelement 10 is secured to a heater body (not shown) through theholder 20. - The tip of the
vibrating element 10, that is, the tip on the left of theshank 14 in this embodiment is formed with anedged portion 22. Further, one or morefuel supplying pipes 30 are disposed adjacent to theedged portion 22 of theshank 14, which feed the fuel to theedged portion 22. The fuel supplying pipes are supplied with the liquid fuel from a fuel supplying source (not shown) through external supplying lines (not shown). The flow and flow rate of fuel are controlled by supplying valves (not shown) disposed in the external supplying lines. - With the construction described above, the vibrating
element 10 is continuously vibrated by an ultrasonic vibration generating means 100 operatively connected to thebody portion 12. Accordingly, liquid fuel is supplied through the lines, the supplying valves and the supplyingpipes 30, to theedged portion 22 where the fuel is atomized and outwardly injected. - The
edged portion 22 of the vibratingelement 1 is usually formed either with four annular steps having progressively increased diameters or with a plurality of annular steps having equal diameters as shown. - The atomizing apparatus having such construction operates extremely effectively. However, the present inventors have found that the atomizing apparatus such as fuel injection nozzles for use with a boiler, a gas turbine or an automobile, and the like in which the flow rate and thus supplying speed of fuel varies in response to the running load has various drawbacks.
- Particularly, with the construction of the atomizing apparatus of the type as shown in Fig. 2 in which a vibrating element is horizontally disposed, and constructed as shown in Fig. 2, at an increased flow rate of fuel supply a part of the fuel may fall in drops without being fed to the edged portion, or the particle size of the liquid being pulverized may be increased.
- The occurrence of such phenomena causes incomplete combustion resulting in increasing hydrocarbon, carbon monoxide and soot in the exhaust gas. On the other hand, at a low flow rate of fuel the mixing of fuel and air for combustion is insufficiently effected resulting in lowering combustion efficiency and increasing hydrocarbon, carbon monoxide and soot in the exhaust gas similar to the above-mentioned.
- The ultrasonic atomizing vibratory element according to the present invention and shown in Fig. 1 will now be described in detail with reference to Fig. 1.
- While the present invention may be effectively used in various applications as mentioned above, in the present embodiment, the present invention will be described as being used as a fuel atomizer for a kerosene heater as explained in connection with Fig. 2. Fig. 1 merely shows an
edged portion 22 at the tip of the vibratory element of the atomizer. - According to the present invention, the
edged portion 22 of a vibratingelement 10 is formed with a plurality offlat portions edged portion 22 as seen in the direction indicated by arrow X is suitably a circular shape but is not limited to such a shape. In the present embodiment, the edged portion is formed with two flat portions, namely a firstflat portion 24 and a secondflat portion 26 but the configuration of theedged portion 22 is not limited to this two step configuration and may comprise one step or more than two such steps. - Further, while the
flat portions - Further, a
shank 14 of vibratingelement 10 is formed with agroove 28 in the outer periphery of theshank 14 which groove receives fuel from afuel supplying pipe 30. Thegroove 28 is adapted to guide the fuel along the shank to the first stageflat portion 24. Thegroove 28 is progressively enlarged in cross-section from anupstream portion 28a which receives the fuel discharged out of thefuel supplying pipe 30 to adownstream portion 28b whereat the fuel is discharged to theflat portion 24. Preferably, the bottom surface of the groove is inclined downwardly in the direction from thefuel receiving portion 28a to thefuel discharging portion 28b, to facilitate the flow of the fuel along the groove. - Further, the groove may be of a U-shaped or V-shaped cross-section.
- With the construction of vibrating element described with reference to, and as shown in, Fig. 1, the fuel which is supplied to the
shank 14 of the vibrating element may be guided by thegroove 28 to flow efficiencly to the firstflat portion 24. The fuel which is supplied to the firstflat portion 24 may be spread over the first flat portion resulting in increasing the contacting area of the fuel and the edged portion. The fuel may be atomized at theflat portion 24 and its peripheral edges. The surplus fuel which is not atomized at the firstflat portion 24 flows from the first flat portion to the secondflat portion 26 to be again spread over the secondflat portion 26 and to be atomized at the second flat portion and its peripheral edges. Thus, the present invention accomplishes an increased efficiency of pulverization and cooling of supply liquid. - In addition according to the present invention, it is possible to accomplish consistent liquid atomization and eliminate the trouble that the fuel supplied to the
edged portion 22 in the prior art Fig. 2 construction falls in droplets. - With the construction as herein described according to the present invention with reference to Fig. 1, the ultrasonic atomizing vibratory element can stably and efficiently atomize either a large amount of, or a small amount of, liquid at the flat portion(s) formed in the edged portion, and resulting in providing a large turn down ratio and eliminating the problem of falling of the liquid in droplets.
- Further, it is possible to accomplish stable combustion and reduction of hydrocarbon (HC), carbon monoxide (CO) and soot in exhaust gases in fuel injection nozzles for use with fuel atomizers for kerosene heaters, boilers, gas turbines, atuomobiles and the like, to a large extent.
- In addition the vibratory element of Fig. 1 can accomplish consistent liquid atomization in that there is no substantial change in the conditions of atomization (flow rate and particle size), so that particularly the vibratory element of Fig. 1 may effectively be used in a horizontal combustor.
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986097790U JPS636074U (en) | 1986-06-27 | 1986-06-27 | |
JP97790/86 | 1986-06-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0251524A2 true EP0251524A2 (en) | 1988-01-07 |
EP0251524A3 EP0251524A3 (en) | 1989-03-08 |
EP0251524B1 EP0251524B1 (en) | 1992-03-18 |
Family
ID=14201607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87305111A Expired - Lifetime EP0251524B1 (en) | 1986-06-27 | 1987-06-10 | Ultrasonic atomizing vibratory element |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0251524B1 (en) |
JP (1) | JPS636074U (en) |
KR (1) | KR880000148A (en) |
DE (1) | DE3777467D1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5801106A (en) * | 1996-05-10 | 1998-09-01 | Kimberly-Clark Worldwide, Inc. | Polymeric strands with high surface area or altered surface properties |
US6020277A (en) * | 1994-06-23 | 2000-02-01 | Kimberly-Clark Corporation | Polymeric strands with enhanced tensile strength, nonwoven webs including such strands, and methods for making same |
US6053424A (en) * | 1995-12-21 | 2000-04-25 | Kimberly-Clark Worldwide, Inc. | Apparatus and method for ultrasonically producing a spray of liquid |
DE10327430A1 (en) * | 2003-06-18 | 2005-01-05 | Abb Patent Gmbh | Ultrasonic standing-wave atomizer |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA969680B (en) | 1995-12-21 | 1997-06-12 | Kimberly Clark Co | Ultrasonic liquid fuel injection on apparatus and method |
US6543700B2 (en) | 2000-12-11 | 2003-04-08 | Kimberly-Clark Worldwide, Inc. | Ultrasonic unitized fuel injector with ceramic valve body |
US6663027B2 (en) | 2000-12-11 | 2003-12-16 | Kimberly-Clark Worldwide, Inc. | Unitized injector modified for ultrasonically stimulated operation |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0159189A2 (en) * | 1984-04-19 | 1985-10-23 | Toa Nenryo Kogyo Kabushiki Kaisha | Ultrasonic vibration method and apparatus for atomizing liquid material |
-
1986
- 1986-06-27 JP JP1986097790U patent/JPS636074U/ja active Pending
-
1987
- 1987-06-10 DE DE8787305111T patent/DE3777467D1/en not_active Expired - Lifetime
- 1987-06-10 EP EP87305111A patent/EP0251524B1/en not_active Expired - Lifetime
- 1987-06-17 KR KR1019870006140A patent/KR880000148A/en not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0159189A2 (en) * | 1984-04-19 | 1985-10-23 | Toa Nenryo Kogyo Kabushiki Kaisha | Ultrasonic vibration method and apparatus for atomizing liquid material |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6020277A (en) * | 1994-06-23 | 2000-02-01 | Kimberly-Clark Corporation | Polymeric strands with enhanced tensile strength, nonwoven webs including such strands, and methods for making same |
US6053424A (en) * | 1995-12-21 | 2000-04-25 | Kimberly-Clark Worldwide, Inc. | Apparatus and method for ultrasonically producing a spray of liquid |
US5801106A (en) * | 1996-05-10 | 1998-09-01 | Kimberly-Clark Worldwide, Inc. | Polymeric strands with high surface area or altered surface properties |
DE10327430A1 (en) * | 2003-06-18 | 2005-01-05 | Abb Patent Gmbh | Ultrasonic standing-wave atomizer |
US7472850B2 (en) | 2003-06-18 | 2009-01-06 | Abb Patent Gmbh | Ultrasonic standing-wave atomizer arrangement |
Also Published As
Publication number | Publication date |
---|---|
EP0251524B1 (en) | 1992-03-18 |
DE3777467D1 (en) | 1992-04-23 |
EP0251524A3 (en) | 1989-03-08 |
JPS636074U (en) | 1988-01-16 |
KR880000148A (en) | 1988-03-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4726522A (en) | Vibrating element for ultrasonic atomization having curved multi-stepped edged portion | |
EP0196390B1 (en) | Ultrasonic injection nozzles | |
EP0187490B1 (en) | Ultrasonic injection nozzles | |
EP0202844B1 (en) | Vibrating element for ultrasonic atomization | |
US4799622A (en) | Ultrasonic atomizing apparatus | |
EP0202102B1 (en) | Ultrasonic atomizing vibratory element | |
US4726523A (en) | Ultrasonic injection nozzle | |
CA2167719A1 (en) | Nozzle including a venturi tube creating external cavitation collapse for atomization | |
CA1275132A (en) | Vibrating element for ultrasonic atomization | |
EP0251524B1 (en) | Ultrasonic atomizing vibratory element | |
US4844343A (en) | Ultrasonic vibrator horn | |
KR900003969B1 (en) | Vibrating element for ultrasonic atomization having curved multi-stepped edged portion | |
JPH0256942B2 (en) | ||
JPS62114678A (en) | Ultrasonic atomizing apparatus | |
JPH02293065A (en) | Vibrator for ultrasonic wave atomization | |
JPS62110772A (en) | Ultrasonic atomizer | |
JPS62289260A (en) | Method and device for ultrasonic wave atomization | |
JPS62134407A (en) | Combustion device with ultra sonic wave atomization unit | |
JPS62136263A (en) | Ultrasonic atomizing apparatus | |
JPS62114679A (en) | Ultrasonic atomizing apparatus | |
JPS6338810A (en) | Ultrasonic atomization for burner | |
JPS6249108A (en) | Supersonic wave combustion device | |
JPS62114680A (en) | Ultrasonic atomizing apparatus | |
JPH0575475U (en) | Fuel injection nozzle for internal combustion engine | |
JPS62114682A (en) | Ultrasonic atomizing apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB IT SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB IT SE |
|
17P | Request for examination filed |
Effective date: 19890818 |
|
17Q | First examination report despatched |
Effective date: 19900717 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: TONEN CORPORATION |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 19920318 Ref country code: FR Effective date: 19920318 Ref country code: SE Effective date: 19920318 |
|
REF | Corresponds to: |
Ref document number: 3777467 Country of ref document: DE Date of ref document: 19920423 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19920618 |
|
EN | Fr: translation not filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19920618 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19930302 |
|
26N | No opposition filed |