CA1043836A - Ultrasonic spraying device - Google Patents
Ultrasonic spraying deviceInfo
- Publication number
- CA1043836A CA1043836A CA246,635A CA246635A CA1043836A CA 1043836 A CA1043836 A CA 1043836A CA 246635 A CA246635 A CA 246635A CA 1043836 A CA1043836 A CA 1043836A
- Authority
- CA
- Canada
- Prior art keywords
- horn
- liquid
- support
- conduit
- generator
- 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
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
- 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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
- B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
- B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
- B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
- B01F23/2133—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using electric, sonic or ultrasonic energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/25—Mixing by jets impinging against collision plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/34—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by ultrasonic means or other kinds of vibrations
- F23D11/345—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by ultrasonic means or other kinds of vibrations with vibrating atomiser surfaces
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
Abstract
Abstract An ultrasonic spraying device for atomizing a liquid and for breaking up into fine particles any solids contained in the liquid. The device comprises an acoustical horn in which ultrasonic vibration is induced by a generator and having a surface against which liquid may be impinged. The liquid is directed against the surface by one or more conduits that are external of the horn. Means is provided for adjusting the spacing and orientation of the conduits with respect to the impingement surface, for isolating the horn vibrationally from a support upon which the horn is mounted, and the impingement surface may be of several different shapes for controlling the direction in which the impinging liquid is deflected.
There is also disclosed a method of utilizing an ultrasonic horn for atomizing liquids and for breaking up solids into small particles.
There is also disclosed a method of utilizing an ultrasonic horn for atomizing liquids and for breaking up solids into small particles.
Description
- Background of the Invention Ultrasonic devices have heretofore been utilized in connection with the atomization of liquids, such as for atomization of liquid fuels, spraying of liquid chemicals, oxygenation of liquid sewage, and others. Ultrasonic devices for this purpose are shown, for example, in United States Letters Patents 3,214,101; 2,949,900; and 3,672,~23.
In some of these prior devices, the liquid to be I sprayed flows through passages within the transducer and/or 10 ~ the acoustical horn for subjecting the liquid to ultrasonic I vibration while others have utilized conduits that are external j of the transducsr and horn for directing the liquid against a vibrating impingement surface of the horn. In the former case, Ij the passages must be relatively small and are thus subject to 15 1 becoming clogged from solid material that may be present in the liquid. In the case of external conduits, the conduits have not been adjustable for varying the spacing and/or angular orientation with respect to the impingement surface, the horn I has not been vibrationally isolated from a support for the 20 1 same, and the impingement surfaces have not been specially designed for directing the liquid deflected therefrom into desired patterns.
Summary of the Invention ¦ The present invention provides an ultrasonic horn ¦ having an impingement surface against which liquid is directed I ~ -thereagainst from a conduit that is external of the transducer i -and/or horn. The horn is mounted on a support so as to be -,~
-- ~Oi~36 vibrationally isolated therefrom and in a manner so that its - rotational position with respect ~ the support can preferably be varied. The support preferably has an arm attached thereto that supports the conduit and it is preferred that there is a means ; ;
associated with the arm for changing the spacing of the conduit from the impingement surface and for varying the angular orienta-tion with respect thereto.
The impingement surface of the horn may be formed in various configurations for producing a desired spray pattern in the liquid being deflected therefrom.
The invention may also provide for a plurality of conduits for directing liquid against a common impingement surface of the acoustical horn. The conduits may all carry like liquids or they may carry two or more different liquids. In this manner, two or more different liquids may be mixed at the point of impingement on the acoustical horn so as to gain the benefit of synergistic effects of ultrasonic vibration in a chemical reaction or for obtaining an emulsification or other mixing of the different liquids.
An atomizing device according to the present invention comprises a support, an acoustical horn mounted on the ~upport, an ultrasonic generator engaging the horn to impart ultrasonic vibrations thereto when the generator is energized, said horn including a radially extending face integral therewith and opposed to a face on the support, a resilient member between said faces to separate and vibrationally isolate the horn relative to the support, means for attaching said h~rn t3 said support with said resilient means clamped between said faces, and said horn ~
* .: ~:
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, . . . . , . . ~ . . . . . . .
;3836 having a surface against which liquid may be impinged for atomizing the same.
Detailed Description Figure 1 is a cross section view of the device with one external conduit for the liquid.
Figure 2 is an end view of the device of figure 1.
Figure 3 is a view showing two external conduits directed toward a single ultrasonic device.
Figure 4 is an enlarged view of a portion of the acoustical horn with one form of impingement surface.
- 4a -- : ~09~3~3~
Figure 5 is an end view of figure 4. , ~.- :-Figures 6, 7 and 8 are cross section views showing -~
; modified forms of the impingement surfaces of the acoustical horn.
.: :
5 ', In the form of the invention shown in figures 1 and 2, an acoustical horn 10 has a transducer or ultrasonic sound wave generator 11 attached there$o by a bolt 12. The generator is I of the well known type having a pair of piezoelectric crystals 14, 15 ~lamped to either side of an electrical contactor 16 and~
~l against one end of horn 10 and an opposing element by bolt 12.
An electrical lead 18 connects electrical contact 16 with a ~'¦ source of electrical energy, not shown.
'¦ The lower end 20 of horn 10 is of reduced diameter ¦ and there is a radially outwardly extending flange 22 inter- .
~ mediate the ends of horn 10. ~educed diameter portion 20 has al ;. - ; .
¦ threaded bore 23 at its lower end into which is threaded-an adaptor 24 that provides an impingement surface 25. Reduced I ~ :
portion 20 extends through an opening 26 in a support bracket 27 that may be bolted to a wall of a tank or some other ¦ supporting structure 28.
, :,:.,. -,.
A cup shaped housing 30 encloses generator 11 and a ;~:
major portion of the acoustical horn 10 and is attached to support member 27 by a pair of bolts 31 and is sealed relative I .
l to the support structure by a gasket 32. Bolts 31 pass through ;~. I
25 1 ar~uate slots 35 in support 27 and through a pair of bolt holes ~
in a flange 36 on housing 30. The arcuate slots 35 permit I :
housing 30 to be adjusted in a rotative position relative to , ~ I ~,~'- ,'.`
~
'I ,1 ` - .
3~6 :~, support 27 while holts 31 are loose but which is fixed in the desired rotative position when these bolts are tightened.
Located within housing 30 is a mounting ring 38 having a recess 39 for receiving horn flange 22 which is retained in 5 ~ the recess by a washer 40 via several bolts 43 that pass through washer 40, ring 38 and support 27 to rigidly clamp these parts together whereby they form the support structure for the horn. The horn, however, is vibrationally isolated from washer 40 and the bottom wall of recess 39 in ring 38 by 10 ~ a pair of elastomeric washers 45, 46 that are tightly compressed against flange 22 ~y the tightening of bolts 43.
.
- ~ Clamped to support 27 by bolts 47 is a flat plate 48 -having a pair of elongated slots 49 therein through which bolts l 47 pass and which permit lateral adjustment of plate 48 along I -15 ~ support 27 when bolts 47 are loosened. ~ttached to plate 48 by welding or other means is a rod 51 to which another ro~ 52 is adjustably threaded and with a lock nut 53 threaded onto rod, 52 for locking the adjusted position of the two rods. I -;
.
I; The lower end of rod 52 is slotted as at 54 to form a !
20 1l yoke with a pair of arms 55. A cross member 56 is received within slot 54. A bolt 57 passes through openings in arms 55 ¦ and cross member 56 and when tightened deflects arms 55 into tight contact with cross member 56 to fix the angular position 1 l~ of the same relative to rod 52. A plate 58 is welded or other-25 1I wise fixedly attached to cross member 56 and has a slot 60 therein for receiving an externally threade~ fitting 61. A pai~
of lock nuts 62 clamps fitting 61 in a fixed position on plate ~0.
Fitting 61 is attached at its lower end to hose 64. A bore 65 6 :
,1 , . .
,1 , . .
~ ! -through the fitting communicates with the interior of hose 64, a replaceable nozzle tip 66 is attached to fitting 61 by a ~:
threaded nut 67 and has a discharge opening 68. -~ In one application of the device shown in figure 1, plate 48 is so positioned on support 27 and cross member 56 ~ .
angularly positioned on rod 52 so that fitting 61 will be axially aligned with the longitudinal axis of horn 10. Also, ~ .
: i the threaded connection between rods 51 and 52 will be adjusted : :
; so that the upper end of fitting 61 will be spaced a predeter~
: . .
mined axial distance from impingement surface 25 of member 24. ~
:, . In this case, impingement surface 25 is preferrably formed in :; , .
'' the manner shown more clearly in figures 4 and 5 wherein ., . -impingement surface 25 includes an annular recess 70 between a , `
I central convexly curved portion 71 and an outer annular rim 72.¦
15 I With this configuration, liquid flowing from fitting opening 68 ', impinges upon the radially inner portion of annular recess 70 ¦ ¦
!I to be broken up into small liquid particles and be deflected !l ~ downwardly and radially outwardly so as to spray around fitting~
: ¦ 61. Energization of electrical contactor 16 causes the 20 1 piezoelectric crystals 14, 15 to impart ultrasonic vibration to ¦ horn 10, which includes impingement surface 25. The high acceleration of these vibrations causes the liquid, and solids ~
that may be in the liquid, impinging thereagainst to be broken , . .
up into smaller particles than would be the case if surface 25 was not subjected to ultrasonic vibration.
I
As illustrated in figure 3, the angular orientation of I fitting 61 with respect to the impingement surface of the acoustical horn may be varied. This is accomplished by looseni~g ll¦ bolts 47 and sliding plate 48 along support 27 to a new position, 3~ 1! after which bolts 47 are tightened, and loosening bolt 57 and 'i rotating cross member 56 to a different angular position relative to rod 52, after which bolt 57 is again tightened. In 1~3~3~
this case, it may be more desirable to have a different adaptor 75 attached to reduced portion 20 of horn 10 and which provides a flat impingement sur~ace 76. Furthermore, the spacing of fitting 61 from surface 76 can be lurther adjusted by the threaded connection between rods 52 and 51.
¦ Also as indicated in figure 3, a second conduit 80 with a corresponding fitting 81 can be utilized by mounting `
another plate 48 to sup~ort 27 and which additional plate ~I carries another set of rods 51, 52, cross member 56 and plate , 10 l 58. The spacing and angular location of the second fitting 81 with respect to horn im~ingement surface 76 can be adjusted in the same manner as for fitting 61.
When two conduits 64, 80 are used, as shown in figure 1! 3~ they may direct either like or dissimilar liquids against impingement surface 76. Thus, this arrangement may be used Il when it is desired to either mix two dissimilar liquids or - ~¦ where it is desired to emulsify two different liquids.
Figure 6 shows a modified form of adaptor 85 that I ¦
¦ may be used for providing the impingement surface for the 20 1l acoustical horn. In this case, adaptor 85 has a conical reces$
i 86 with a bottom wall 87 that is shown flat but which may be curved somewhat, and there is a raised central portion 88 on the bottom wall. When using this adaptor 85, a single conduitl ~ 64 would be used and the fitting 61 would be in axial alignmenf with the acoustical horn. Fluid impinging on the bottom wall , -¦ 87 would tend to be deflected therefrom in a spray cone havingl -I an included angle about the same as the included angle of ~ -¦ conical surface 86.
.. . ....
:~;)43t~3~
Figure 7 shows another form of adaptor 90 having a - cylindrical recess 91. In this case, the end of fitting 61 is within a side opening 92 leading to re_ess 91 and intermediate the ends thereof. In this case, the liquid droplets leave the adaptor in a spray pattern that is substantially -ylindrical.
Figure 8 illustrates still another form of adaptor 95 in which there is a passage substantially transversely - therethrough. The passage has a first portion 96 that is at ` an angle to the longitudinal axis of the acoustical horn and 10 ~l~ another portion 97 that is substantially normal to such ,l longitudinal axis. In this case, the liquid droplets leave .`
,I passage 97 in a lateral direction.
,l With the forms of adaptors shown in figures 7 and 8 ',~ the end of nozzle tip 66 fits loosely within the respective 15 i! passages 92, 96 so as to be out of contact with the walls thereof whereby the ultrasonic vibrations imparted to adaptors ;`
¦ 90, 95 are not tran~mitted to the nozzle tip.
l l~ ~
~, ..
In some of these prior devices, the liquid to be I sprayed flows through passages within the transducer and/or 10 ~ the acoustical horn for subjecting the liquid to ultrasonic I vibration while others have utilized conduits that are external j of the transducsr and horn for directing the liquid against a vibrating impingement surface of the horn. In the former case, Ij the passages must be relatively small and are thus subject to 15 1 becoming clogged from solid material that may be present in the liquid. In the case of external conduits, the conduits have not been adjustable for varying the spacing and/or angular orientation with respect to the impingement surface, the horn I has not been vibrationally isolated from a support for the 20 1 same, and the impingement surfaces have not been specially designed for directing the liquid deflected therefrom into desired patterns.
Summary of the Invention ¦ The present invention provides an ultrasonic horn ¦ having an impingement surface against which liquid is directed I ~ -thereagainst from a conduit that is external of the transducer i -and/or horn. The horn is mounted on a support so as to be -,~
-- ~Oi~36 vibrationally isolated therefrom and in a manner so that its - rotational position with respect ~ the support can preferably be varied. The support preferably has an arm attached thereto that supports the conduit and it is preferred that there is a means ; ;
associated with the arm for changing the spacing of the conduit from the impingement surface and for varying the angular orienta-tion with respect thereto.
The impingement surface of the horn may be formed in various configurations for producing a desired spray pattern in the liquid being deflected therefrom.
The invention may also provide for a plurality of conduits for directing liquid against a common impingement surface of the acoustical horn. The conduits may all carry like liquids or they may carry two or more different liquids. In this manner, two or more different liquids may be mixed at the point of impingement on the acoustical horn so as to gain the benefit of synergistic effects of ultrasonic vibration in a chemical reaction or for obtaining an emulsification or other mixing of the different liquids.
An atomizing device according to the present invention comprises a support, an acoustical horn mounted on the ~upport, an ultrasonic generator engaging the horn to impart ultrasonic vibrations thereto when the generator is energized, said horn including a radially extending face integral therewith and opposed to a face on the support, a resilient member between said faces to separate and vibrationally isolate the horn relative to the support, means for attaching said h~rn t3 said support with said resilient means clamped between said faces, and said horn ~
* .: ~:
~A ~
, . . . . , . . ~ . . . . . . .
;3836 having a surface against which liquid may be impinged for atomizing the same.
Detailed Description Figure 1 is a cross section view of the device with one external conduit for the liquid.
Figure 2 is an end view of the device of figure 1.
Figure 3 is a view showing two external conduits directed toward a single ultrasonic device.
Figure 4 is an enlarged view of a portion of the acoustical horn with one form of impingement surface.
- 4a -- : ~09~3~3~
Figure 5 is an end view of figure 4. , ~.- :-Figures 6, 7 and 8 are cross section views showing -~
; modified forms of the impingement surfaces of the acoustical horn.
.: :
5 ', In the form of the invention shown in figures 1 and 2, an acoustical horn 10 has a transducer or ultrasonic sound wave generator 11 attached there$o by a bolt 12. The generator is I of the well known type having a pair of piezoelectric crystals 14, 15 ~lamped to either side of an electrical contactor 16 and~
~l against one end of horn 10 and an opposing element by bolt 12.
An electrical lead 18 connects electrical contact 16 with a ~'¦ source of electrical energy, not shown.
'¦ The lower end 20 of horn 10 is of reduced diameter ¦ and there is a radially outwardly extending flange 22 inter- .
~ mediate the ends of horn 10. ~educed diameter portion 20 has al ;. - ; .
¦ threaded bore 23 at its lower end into which is threaded-an adaptor 24 that provides an impingement surface 25. Reduced I ~ :
portion 20 extends through an opening 26 in a support bracket 27 that may be bolted to a wall of a tank or some other ¦ supporting structure 28.
, :,:.,. -,.
A cup shaped housing 30 encloses generator 11 and a ;~:
major portion of the acoustical horn 10 and is attached to support member 27 by a pair of bolts 31 and is sealed relative I .
l to the support structure by a gasket 32. Bolts 31 pass through ;~. I
25 1 ar~uate slots 35 in support 27 and through a pair of bolt holes ~
in a flange 36 on housing 30. The arcuate slots 35 permit I :
housing 30 to be adjusted in a rotative position relative to , ~ I ~,~'- ,'.`
~
'I ,1 ` - .
3~6 :~, support 27 while holts 31 are loose but which is fixed in the desired rotative position when these bolts are tightened.
Located within housing 30 is a mounting ring 38 having a recess 39 for receiving horn flange 22 which is retained in 5 ~ the recess by a washer 40 via several bolts 43 that pass through washer 40, ring 38 and support 27 to rigidly clamp these parts together whereby they form the support structure for the horn. The horn, however, is vibrationally isolated from washer 40 and the bottom wall of recess 39 in ring 38 by 10 ~ a pair of elastomeric washers 45, 46 that are tightly compressed against flange 22 ~y the tightening of bolts 43.
.
- ~ Clamped to support 27 by bolts 47 is a flat plate 48 -having a pair of elongated slots 49 therein through which bolts l 47 pass and which permit lateral adjustment of plate 48 along I -15 ~ support 27 when bolts 47 are loosened. ~ttached to plate 48 by welding or other means is a rod 51 to which another ro~ 52 is adjustably threaded and with a lock nut 53 threaded onto rod, 52 for locking the adjusted position of the two rods. I -;
.
I; The lower end of rod 52 is slotted as at 54 to form a !
20 1l yoke with a pair of arms 55. A cross member 56 is received within slot 54. A bolt 57 passes through openings in arms 55 ¦ and cross member 56 and when tightened deflects arms 55 into tight contact with cross member 56 to fix the angular position 1 l~ of the same relative to rod 52. A plate 58 is welded or other-25 1I wise fixedly attached to cross member 56 and has a slot 60 therein for receiving an externally threade~ fitting 61. A pai~
of lock nuts 62 clamps fitting 61 in a fixed position on plate ~0.
Fitting 61 is attached at its lower end to hose 64. A bore 65 6 :
,1 , . .
,1 , . .
~ ! -through the fitting communicates with the interior of hose 64, a replaceable nozzle tip 66 is attached to fitting 61 by a ~:
threaded nut 67 and has a discharge opening 68. -~ In one application of the device shown in figure 1, plate 48 is so positioned on support 27 and cross member 56 ~ .
angularly positioned on rod 52 so that fitting 61 will be axially aligned with the longitudinal axis of horn 10. Also, ~ .
: i the threaded connection between rods 51 and 52 will be adjusted : :
; so that the upper end of fitting 61 will be spaced a predeter~
: . .
mined axial distance from impingement surface 25 of member 24. ~
:, . In this case, impingement surface 25 is preferrably formed in :; , .
'' the manner shown more clearly in figures 4 and 5 wherein ., . -impingement surface 25 includes an annular recess 70 between a , `
I central convexly curved portion 71 and an outer annular rim 72.¦
15 I With this configuration, liquid flowing from fitting opening 68 ', impinges upon the radially inner portion of annular recess 70 ¦ ¦
!I to be broken up into small liquid particles and be deflected !l ~ downwardly and radially outwardly so as to spray around fitting~
: ¦ 61. Energization of electrical contactor 16 causes the 20 1 piezoelectric crystals 14, 15 to impart ultrasonic vibration to ¦ horn 10, which includes impingement surface 25. The high acceleration of these vibrations causes the liquid, and solids ~
that may be in the liquid, impinging thereagainst to be broken , . .
up into smaller particles than would be the case if surface 25 was not subjected to ultrasonic vibration.
I
As illustrated in figure 3, the angular orientation of I fitting 61 with respect to the impingement surface of the acoustical horn may be varied. This is accomplished by looseni~g ll¦ bolts 47 and sliding plate 48 along support 27 to a new position, 3~ 1! after which bolts 47 are tightened, and loosening bolt 57 and 'i rotating cross member 56 to a different angular position relative to rod 52, after which bolt 57 is again tightened. In 1~3~3~
this case, it may be more desirable to have a different adaptor 75 attached to reduced portion 20 of horn 10 and which provides a flat impingement sur~ace 76. Furthermore, the spacing of fitting 61 from surface 76 can be lurther adjusted by the threaded connection between rods 52 and 51.
¦ Also as indicated in figure 3, a second conduit 80 with a corresponding fitting 81 can be utilized by mounting `
another plate 48 to sup~ort 27 and which additional plate ~I carries another set of rods 51, 52, cross member 56 and plate , 10 l 58. The spacing and angular location of the second fitting 81 with respect to horn im~ingement surface 76 can be adjusted in the same manner as for fitting 61.
When two conduits 64, 80 are used, as shown in figure 1! 3~ they may direct either like or dissimilar liquids against impingement surface 76. Thus, this arrangement may be used Il when it is desired to either mix two dissimilar liquids or - ~¦ where it is desired to emulsify two different liquids.
Figure 6 shows a modified form of adaptor 85 that I ¦
¦ may be used for providing the impingement surface for the 20 1l acoustical horn. In this case, adaptor 85 has a conical reces$
i 86 with a bottom wall 87 that is shown flat but which may be curved somewhat, and there is a raised central portion 88 on the bottom wall. When using this adaptor 85, a single conduitl ~ 64 would be used and the fitting 61 would be in axial alignmenf with the acoustical horn. Fluid impinging on the bottom wall , -¦ 87 would tend to be deflected therefrom in a spray cone havingl -I an included angle about the same as the included angle of ~ -¦ conical surface 86.
.. . ....
:~;)43t~3~
Figure 7 shows another form of adaptor 90 having a - cylindrical recess 91. In this case, the end of fitting 61 is within a side opening 92 leading to re_ess 91 and intermediate the ends thereof. In this case, the liquid droplets leave the adaptor in a spray pattern that is substantially -ylindrical.
Figure 8 illustrates still another form of adaptor 95 in which there is a passage substantially transversely - therethrough. The passage has a first portion 96 that is at ` an angle to the longitudinal axis of the acoustical horn and 10 ~l~ another portion 97 that is substantially normal to such ,l longitudinal axis. In this case, the liquid droplets leave .`
,I passage 97 in a lateral direction.
,l With the forms of adaptors shown in figures 7 and 8 ',~ the end of nozzle tip 66 fits loosely within the respective 15 i! passages 92, 96 so as to be out of contact with the walls thereof whereby the ultrasonic vibrations imparted to adaptors ;`
¦ 90, 95 are not tran~mitted to the nozzle tip.
l l~ ~
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Claims (18)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An atomizing device comprising a support, an acoustical horn mounted on the support, an ultrasonic generator engaging the horn to impart ultrasonic vibrations thereto when the generator is energized, said horn including a radially extending face integral therewith and opposed to a face on the support, a resilient member between said faces to separate and vibrationally isolate the horn relative to the support, means for attaching said horn to said support with said resilient means clamped between said faces, and said horn having a surface against which liquid may be impinged for atomizing the same.
2. A device according to claim 1 in which there is a housing separate of the support and surrounding said generator and at least a portion of the horn, and means for attaching the housing to said support, said housing attachment means including means for varying the rotative position of the housing relative to the support.
3. An atomizing device comprising a support, an acoustical horn mounted on the support, an ultrasonic generator engaging the horn whereby when the generator is energized it imparts vibrations to the horn in the ultrasonic frequency range, said horn having a reduced diameter portion spaced from the generator, an opening in the support, said reduced diameter portion of the horn extending completely through said opening, means attaching the horn to said support including a flange integral with the horn and extending radially beyond said opening with one side of the flange being opposite a face on the support, an annular member overlying another face of the flange and bolted to said support, and resilient means on each side of the flange and clamped between the flange and a respective one of said faces to separate and vibrationally isolate the horn relative to the support, and said reduced diameter portion having a surface against which a liquid may be impinged for atomizing the same.
4. A device according to claim 3 in which said flange is closely adjacent the reduced diameter portion.
5. A device according to claim 3 in which said support includes a bracket with means for attachment to another supporting structure, and said support includes an annular ring that provides said support face, and means for rigidly clamping said annular ring to said bracket.
6. A device according to claim 1, wherein said surface against which liquid may be impinged faces axially away from the generator for impingement thereon of liquid flowing generally towards the generator, said surface being presented by a portion which is detachably connected to said horn whereby said portion may be replaced by another horn portion while main-taining the engagement between the horn and generator.
7. A device according to claim 1, further comprising a conduit for conveying liquid, said conduit having an open end, and means for supporting the conduit with said open end in axial alignment with a portion of the horn presenting said surface against which liquid may be impinged and in spaced relation to said surface for directing liquid flowing from said conduit through said open end against said surface, the horn being supported in vibrational isolation from the conduit.
8. A device according to claim 7 in which said surface is shaped to deflect liquid flowing thereagainst in an axial direction to a non-axial direction.
9. A device according to claim 7 in which there is means for adjusting the axial spacing between said open end and said surface.
10. A device according to claim 7 in which said surface is shaped to deflect said liquid in a conical pattern.
11. A device according to claim 7 in which said surface has an annular groove therein against which said liquid may impinge.
12. A device according to claim 1, wherein an arm projects from the support, and a conduit for liquid is attached to said arm, said arm comprising a first portion attached to said support and a second portion attached to said conduit, said portions being connected to each other by means that permits angular adjustment of the portions relative to each other, said conduit having an open end, and said surface of the horn being spaced from said open end and in the flow path of liquid flowing from the conduit through said open end.
13. A device according to claim 1, further comprising means for simultaneously directing two streams of liquid against said surface of the horn.
14. A device according to claim 13 in which there are means for adjusting the position of each conduit relative to said surface.
15. A device according to claim 1, wherein said surface of the horn against which liquid may be impinged is presented by a recess in a portion of the horn, said recess having a bottom wall and a side wall flaring outwardly from the bottom wall toward the open end of the recess.
16. A device according to claim 15 in which the bottom wall has a raised center portion.
17. A device according to claim 1, wherein said surface of the horn against which liquid may be impinged is presented by a portion of the horn which includes a recess with a side wall, and an opening through the side wall through which liquid may be directed into the recess.
18. A device according to claim 1, wherein said surface of the horn against which liquid may be impinged is presented by a portion of the horn having a passage extending generally transversely therethrough, said passage including a first portion into which liquid may be introduced and a second portion from which the liquid may be discharged, and said passage portions being angularly disposed relative to each other whereby liquid entering the first passage portion will impinge against a portion of the wall of the second passage portion.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/557,622 US3966120A (en) | 1975-03-12 | 1975-03-12 | Ultrasonic spraying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1043836A true CA1043836A (en) | 1978-12-05 |
Family
ID=24226205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA246,635A Expired CA1043836A (en) | 1975-03-12 | 1976-02-26 | Ultrasonic spraying device |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3966120A (en) |
| CA (1) | CA1043836A (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4086057A (en) * | 1976-07-28 | 1978-04-25 | William Clinton Everett | Ultrasonic disinfection system |
| US4591485A (en) * | 1983-12-22 | 1986-05-27 | International Paper Company | Method and apparatus for sonicating articles |
| DE3582287D1 (en) * | 1984-09-07 | 1991-05-02 | Omron Tateisi Electronics Co | VIBRATION GENERATOR FOR AN INHALATION DEVICE WITH ULTRASONIC SPRAYING. |
| US4659014A (en) * | 1985-09-05 | 1987-04-21 | Delavan Corporation | Ultrasonic spray nozzle and method |
| US5387444A (en) * | 1992-02-27 | 1995-02-07 | Dymax Corporation | Ultrasonic method for coating workpieces, preferably using two-part compositions |
| GB2326356A (en) * | 1998-03-21 | 1998-12-23 | Sobegina Trading Limited | Preparing emulsions by reflecting a liquid mixture |
| WO2007059144A1 (en) * | 2005-11-15 | 2007-05-24 | Surmodics, Inc. | Ultrasonic nozzles for applying two-component coatings |
| US8309045B2 (en) | 2011-02-11 | 2012-11-13 | General Electric Company | System and method for controlling emissions in a combustion system |
| US9382920B2 (en) | 2011-11-14 | 2016-07-05 | General Electric Company | Wet gas compression systems with a thermoacoustic resonator |
| US9308355B2 (en) | 2012-06-01 | 2016-04-12 | Surmodies, Inc. | Apparatus and methods for coating medical devices |
| US9827401B2 (en) | 2012-06-01 | 2017-11-28 | Surmodics, Inc. | Apparatus and methods for coating medical devices |
| US11090468B2 (en) | 2012-10-25 | 2021-08-17 | Surmodics, Inc. | Apparatus and methods for coating medical devices |
| WO2020112816A1 (en) | 2018-11-29 | 2020-06-04 | Surmodics, Inc. | Apparatus and methods for coating medical devices |
| US11819590B2 (en) | 2019-05-13 | 2023-11-21 | Surmodics, Inc. | Apparatus and methods for coating medical devices |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE710653C (en) * | 1936-07-31 | 1941-09-18 | Otto Muck | Atomizers, especially for liquid mist |
| US3110825A (en) * | 1959-09-02 | 1963-11-12 | Clevite Corp | Folded transducer |
| GB1100535A (en) * | 1963-10-10 | 1968-01-24 | Omega Lab Ltd | Ultrasonic atomization |
| US3214101A (en) * | 1964-03-31 | 1965-10-26 | Little Inc A | Apparatus for atomizing a liquid |
| US3860173A (en) * | 1970-02-03 | 1975-01-14 | Naoyasu Sata | Non-polluting combustion engine having ultrasonic fuel atomizer in place of carburetor |
| US3790079A (en) * | 1972-06-05 | 1974-02-05 | Rnb Ass Inc | Method and apparatus for generating monodisperse aerosol |
| US3804329A (en) * | 1973-07-27 | 1974-04-16 | J Martner | Ultrasonic generator and atomizer apparatus and method |
| US3861852A (en) * | 1974-01-25 | 1975-01-21 | Berger Harvey | Fuel burner with improved ultrasonic atomizer |
-
1975
- 1975-03-12 US US05/557,622 patent/US3966120A/en not_active Expired - Lifetime
-
1976
- 1976-02-26 CA CA246,635A patent/CA1043836A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3966120A (en) | 1976-06-29 |
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