CA1330872C - Centrifugal atomizer having a knife-edged rotating cone - Google Patents
Centrifugal atomizer having a knife-edged rotating coneInfo
- Publication number
- CA1330872C CA1330872C CA000615101A CA615101A CA1330872C CA 1330872 C CA1330872 C CA 1330872C CA 000615101 A CA000615101 A CA 000615101A CA 615101 A CA615101 A CA 615101A CA 1330872 C CA1330872 C CA 1330872C
- Authority
- CA
- Canada
- Prior art keywords
- cone
- face
- resin
- housing
- atomizer
- 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 - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000011347 resin Substances 0.000 abstract description 46
- 229920005989 resin Polymers 0.000 abstract description 46
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000011230 binding agent Substances 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 3
- 239000002023 wood Substances 0.000 description 5
- 238000009987 spinning Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 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
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
- B05B3/1007—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member
- B05B3/1014—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/001—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements incorporating means for heating or cooling, e.g. the material to be sprayed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
- B05B3/1092—Means for supplying shaping gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
CENTRIFUGAL ATOMIZER HAVING A KNIFE-EDGED ROTATING CONE
Abstract of the Disclosure To more efficiently use liquid resin as a binder in the manufacture of particle board, wafer board, oriented-strand board, and the like, an atomizer for producing a fog of atom-ized liquid resin is provided which has a rotating cone where-in said cone spins at high speeds and has a sharp, knife edge around its outermost circumference and a plurality of apertures around the circumference of its face. Liquid resin is supplied to an annular chamber formed in the rear of the cone. The resin is then propelled by the rotating motion of the cone through the apertures around the circumference of the face of the cone, onto the inside surfaces of the cone, and sprayed as an atomized fog from the sharp edge of the cone in a plane defined by the sharp edge of the cone.
Abstract of the Disclosure To more efficiently use liquid resin as a binder in the manufacture of particle board, wafer board, oriented-strand board, and the like, an atomizer for producing a fog of atom-ized liquid resin is provided which has a rotating cone where-in said cone spins at high speeds and has a sharp, knife edge around its outermost circumference and a plurality of apertures around the circumference of its face. Liquid resin is supplied to an annular chamber formed in the rear of the cone. The resin is then propelled by the rotating motion of the cone through the apertures around the circumference of the face of the cone, onto the inside surfaces of the cone, and sprayed as an atomized fog from the sharp edge of the cone in a plane defined by the sharp edge of the cone.
Description
3 ~ J~ 7 CENTRIFUGAL ATOMIZER HAVING A KNIFE-EDGED ROTATING CONE
Field of the Invention This application pertains to centrifugal atomizers and more particularly to centrifugal atomizers of the spinning disc type used for dispersing liquid resin in wood chip blenders used in the production of waferboard.
Background of the Invention Liquid resin is used as a binder in the manufacture of particle board, wafer board, oriented-strand board, and similar wood products. These products are manufactured by coating wood chips, flakes, strands, or the like (hereafter referred to as "furnish") with resin binders, the coated furnish then being aligned, compressed, and heated to form sheets of wood building products. The integral strength of these products is based on the uniform dispersement of the liquid binder throughout all the surfaces of the furnish.
A substantial cost element in the manufacture of such wood products is the cost of the resin binder used. Consequently, if a reduction in the amount of resin required in the manufacturing process is accomplished while maintaining the coating standards for the furnish, the cost of manufacture is directly lowered.
In the prior art, resin binders have been applied by numerous method including the use of pulverised dry resin, spraying of liquid resin through nozzles, and the use of rotating -~
sprayers to create a resin mist. The dry resin method has the ;
drawback of being inefficient in use of the resin and therefor most expensive. The nozzle-spraying method has the disadvantage of producing a wide range of sizes of resin droplets.- ;~
Rotary sprayer were introduced to provide a con-trollable spray of uniform-sized droplets. Canadian patent No.
1,160,038, issued January 10, 1984 to Beattie, discloses the use of dual, spinning, slightly conical discs for spraying liquids ~
"` ' ~ :
'~
:
i ' ' 3 f~ 7 2 within a nearly-horizontally-rotating, tubular furnish blender.
A circular tubular ring provided with a series of orifices feeds the liquid resin against the spinning recessed face of a central plate driven by a hydraulic motor. Centrifugal force causes the liquid to flow outwardly over the plate to be held in a circum-ferential reservoir located internally near the perimeter of the disc. As the reservoir is fed with liquid, the liquid from the reservoir is forced over restraining dams so that it flows radially outward over the disc face. The liquid accumulates on the circumferential edge of the disc until forced off as a spray by the spinning action of the disc.
Beattie teaches that medium-sized droplets (50 to 200 microns in diameter) are preferred in that larger droplets are wasteful of the liquid resin and smaller droplets do not travel the distance required to meet the furnish as per the Beattie design. Indeed, Beattie states that droplets that are too small not only fail to travel far enough to meet the furnish, but also coalesce en route. The Beattie patent therefore does not consider the use of very small droplet size as a viable option.
Beattie also teaches that the sharpness of edge profile of the disc is of minor importance (p. 9, lines 21-22). Prior art discs have a radius of curvature of the disc edge on the oprder of 1/4 inch.
Beattie describes how the surfaces of the reservoir dams are machined to final dimension after assembly to ensure identical radii of the dam surfaces from the axis of rotation.
The dam surfaces control the distribution of the flow of liquid from the reservoir to the disc face. Therefore, careful alignment and machining is required to ensure a uniform spray leaving the disc. Machining the components after assembly increases the complexity and cost of manufacture of the centrifu-gal atomizer.
Such prior art atomizers have a number of disad-vantages. Resin droplets are created which, although small enough ~ :
:
~;
to be described as a mist, are unnecessarily large, causing unnecessarily high consumption of resin. Such atomizers are ex-pensive to manufacture in that machining of the rotary sprayer head is done after assembly to exacting tolerances to achieve uniform spraying. Also, since the liquid resin flows across the face of the disc, dust covers may be required in certain applications.
Summary of the Invention To more efficiently use liquid resin as a binder in the manufacture of particle board, wafer board, oriented-strand board, and the like, an atomizer for producing a fog of atom-ized liquid resin is provided which has a rotating cone where-in said cone spins at high speeds and has a sharp, knife edge around its outermost circumference and a plurality of apertures around the circumference of its face. Liquid resin is supplied to an annular chamber formed in the rear of the cone. The resin is then propelled by the rotating motion of the cone through the apertures around the circumference of the face of the cone, onto the inside surfaces of the cone, and sprayed as an atomized fog from the sharp edge of the cone in a plane defined by the sharp edge of the cone. ~-Brief Descri~tion of the Drawings The attached drawings disclose a preferred embodiment of the invention which should not be construed as limiting the~;~
spirit or scope of the invention in any way.
;
Figure 1 is a perspective view of the invention. ~-~
Figure 2 is a cross-section taken along lines 2-2 of Figure -1 . ~ ' Figure 3 is a cross-section taken along lines 2-2 of Figure 1 showing the main housing in isolation.
B
~; 3 ~ t~
Figure 4 is a front elevation view of the main housing shown in Figure 3.
Figure 5 is a rear elevation view of the main housing shown in Figure 3.
Figure 6 is a front elevation view, partially cut away, of the cone of the invention.
Figure 6A is a cross section taken along lines 6A-6A of Figure 6.
Figure 7 is a front elevation view, partially cut away, of the resin plate of the invention.
Figure 7A is a cross section taken along lines 7A-7A of Figure 7.
Figure 8 is a partial cross section taken along lines 8-8 of Figure 5.
Detailed Description of the Preferred Embodiment The centrifugal atomizer of the invention, designated generally as 1, is designed for use in a blender as disclosed in the Beattie reference above. It has been found that furnish subjected to a resin fog for a short period of time during the manufacturing of such wood-building products produces boards that meet the required structural standards. Further, such a process is more efficient with respect to resin consumption.
Referring to Figure 2, the atomizer consists essentially of a main housing 3, a rotating cone 2, and resin plate 7 fixed to the non-rotating housing 3. An electric two-pole motor 4, which rotates at 15,000 r.p.m., is secured by clamp 14 and screw 15 drives cone 2 via drive shaft 10. Cone 2 is connected to drive T~ .
,j ~ :
~: , ~3~ 2 shaft 10 by nut 20, washer 21 and cotter pin 22. A hardened washer is also provided at 23.
Air line 12 provides cooling air to the motor 4. Magnetic pick-up 8 interacts with metal inserts in the rotating cone 2 to sense the rotation of the cone and to provide a signal repre sentative of the cone's rotational speed via signal carrier 16.
Cover plate 18 provides access to magnetic pick-up 8. Heat sensor 17 also provides a signal via line 19 representative of the heat of the atomizer. Resin feed line 9 connects to feed channel 5, which is shown for purposes of illustration in figure 2 at a different angular location than the actual position shown in figures 4, 5 and 8.
Resin plate 7 is fixed to housing 3 by cap screws 26. An O-ring is provided at 25 to prevent leakage of resin.
Figure 3 illustrates in cross section in further detail the housing 3, with the cone, motor and resin plate removed. The resin plate 7 fits over hub 33 to form the resin flow path. Cut-outs 36 are milled in the body of the housing for weight reduction. A bore 34, (not shown in Figure 2) is provided in the housing communicating with cut-out 36 by channel 38 to provide cooling air flow from the air line 12, through the motor cavity, and out bore 34. A cap is provided for the outer end 39 of bore 34. Channels 42 and 44 are provided for sensor 8 and line 16 respectively.
Figures 6 and 6A illustrate the cone 2. It has a rear opening 48 which fits over resin plate 7. Holes 30 are formed in the face 45 of the cone and may form two complete continuous circumferential rows as partially illustrated in Figure 6. The holes are drilled in a slightly spiralling offset manner (i.e.
not parallel to the axis of rotation nor to each other) for better resin flow. Edge 32 is a sharp knife edge. Conical surface 31 preferably diverges from face 45 at an angle of about 37 degrees.
j~.,~.......... .
s . ~ ,;,. . .
-~ ~ 3 ~ 2 Figure 7 and 7A show the resin plate, which is secured to housing 3 through holes 47.
Figure 8 illustrates in better detail the resin feed channel 5. The end of channel 5 communicates with an angled bore 50 which carries the resin into area 51 behind the resin plate.
In operation, cone 2 is rotated by motor 4 at high speed.
Liquid resin enters via resin feed-line 9 under pressure and follows the path shown by arrows 11 through opening 13, through opening 29 between resin plate 7 and housing 3, and into chamber 28 where the resin is aerated and propelled by a centrifugal force through apertures 30, onto and along the cone inside surface 31, and onto sharp edge 32. High centrifugal forces cause the resin to leave the knife edge 32 as a fog lying in a plane perpendicular to the axis of rotation of the cone.
As will be apparent to those skilled in the art in the light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.
, .. . .
$. -s,.
. . . :.~ -
Field of the Invention This application pertains to centrifugal atomizers and more particularly to centrifugal atomizers of the spinning disc type used for dispersing liquid resin in wood chip blenders used in the production of waferboard.
Background of the Invention Liquid resin is used as a binder in the manufacture of particle board, wafer board, oriented-strand board, and similar wood products. These products are manufactured by coating wood chips, flakes, strands, or the like (hereafter referred to as "furnish") with resin binders, the coated furnish then being aligned, compressed, and heated to form sheets of wood building products. The integral strength of these products is based on the uniform dispersement of the liquid binder throughout all the surfaces of the furnish.
A substantial cost element in the manufacture of such wood products is the cost of the resin binder used. Consequently, if a reduction in the amount of resin required in the manufacturing process is accomplished while maintaining the coating standards for the furnish, the cost of manufacture is directly lowered.
In the prior art, resin binders have been applied by numerous method including the use of pulverised dry resin, spraying of liquid resin through nozzles, and the use of rotating -~
sprayers to create a resin mist. The dry resin method has the ;
drawback of being inefficient in use of the resin and therefor most expensive. The nozzle-spraying method has the disadvantage of producing a wide range of sizes of resin droplets.- ;~
Rotary sprayer were introduced to provide a con-trollable spray of uniform-sized droplets. Canadian patent No.
1,160,038, issued January 10, 1984 to Beattie, discloses the use of dual, spinning, slightly conical discs for spraying liquids ~
"` ' ~ :
'~
:
i ' ' 3 f~ 7 2 within a nearly-horizontally-rotating, tubular furnish blender.
A circular tubular ring provided with a series of orifices feeds the liquid resin against the spinning recessed face of a central plate driven by a hydraulic motor. Centrifugal force causes the liquid to flow outwardly over the plate to be held in a circum-ferential reservoir located internally near the perimeter of the disc. As the reservoir is fed with liquid, the liquid from the reservoir is forced over restraining dams so that it flows radially outward over the disc face. The liquid accumulates on the circumferential edge of the disc until forced off as a spray by the spinning action of the disc.
Beattie teaches that medium-sized droplets (50 to 200 microns in diameter) are preferred in that larger droplets are wasteful of the liquid resin and smaller droplets do not travel the distance required to meet the furnish as per the Beattie design. Indeed, Beattie states that droplets that are too small not only fail to travel far enough to meet the furnish, but also coalesce en route. The Beattie patent therefore does not consider the use of very small droplet size as a viable option.
Beattie also teaches that the sharpness of edge profile of the disc is of minor importance (p. 9, lines 21-22). Prior art discs have a radius of curvature of the disc edge on the oprder of 1/4 inch.
Beattie describes how the surfaces of the reservoir dams are machined to final dimension after assembly to ensure identical radii of the dam surfaces from the axis of rotation.
The dam surfaces control the distribution of the flow of liquid from the reservoir to the disc face. Therefore, careful alignment and machining is required to ensure a uniform spray leaving the disc. Machining the components after assembly increases the complexity and cost of manufacture of the centrifu-gal atomizer.
Such prior art atomizers have a number of disad-vantages. Resin droplets are created which, although small enough ~ :
:
~;
to be described as a mist, are unnecessarily large, causing unnecessarily high consumption of resin. Such atomizers are ex-pensive to manufacture in that machining of the rotary sprayer head is done after assembly to exacting tolerances to achieve uniform spraying. Also, since the liquid resin flows across the face of the disc, dust covers may be required in certain applications.
Summary of the Invention To more efficiently use liquid resin as a binder in the manufacture of particle board, wafer board, oriented-strand board, and the like, an atomizer for producing a fog of atom-ized liquid resin is provided which has a rotating cone where-in said cone spins at high speeds and has a sharp, knife edge around its outermost circumference and a plurality of apertures around the circumference of its face. Liquid resin is supplied to an annular chamber formed in the rear of the cone. The resin is then propelled by the rotating motion of the cone through the apertures around the circumference of the face of the cone, onto the inside surfaces of the cone, and sprayed as an atomized fog from the sharp edge of the cone in a plane defined by the sharp edge of the cone. ~-Brief Descri~tion of the Drawings The attached drawings disclose a preferred embodiment of the invention which should not be construed as limiting the~;~
spirit or scope of the invention in any way.
;
Figure 1 is a perspective view of the invention. ~-~
Figure 2 is a cross-section taken along lines 2-2 of Figure -1 . ~ ' Figure 3 is a cross-section taken along lines 2-2 of Figure 1 showing the main housing in isolation.
B
~; 3 ~ t~
Figure 4 is a front elevation view of the main housing shown in Figure 3.
Figure 5 is a rear elevation view of the main housing shown in Figure 3.
Figure 6 is a front elevation view, partially cut away, of the cone of the invention.
Figure 6A is a cross section taken along lines 6A-6A of Figure 6.
Figure 7 is a front elevation view, partially cut away, of the resin plate of the invention.
Figure 7A is a cross section taken along lines 7A-7A of Figure 7.
Figure 8 is a partial cross section taken along lines 8-8 of Figure 5.
Detailed Description of the Preferred Embodiment The centrifugal atomizer of the invention, designated generally as 1, is designed for use in a blender as disclosed in the Beattie reference above. It has been found that furnish subjected to a resin fog for a short period of time during the manufacturing of such wood-building products produces boards that meet the required structural standards. Further, such a process is more efficient with respect to resin consumption.
Referring to Figure 2, the atomizer consists essentially of a main housing 3, a rotating cone 2, and resin plate 7 fixed to the non-rotating housing 3. An electric two-pole motor 4, which rotates at 15,000 r.p.m., is secured by clamp 14 and screw 15 drives cone 2 via drive shaft 10. Cone 2 is connected to drive T~ .
,j ~ :
~: , ~3~ 2 shaft 10 by nut 20, washer 21 and cotter pin 22. A hardened washer is also provided at 23.
Air line 12 provides cooling air to the motor 4. Magnetic pick-up 8 interacts with metal inserts in the rotating cone 2 to sense the rotation of the cone and to provide a signal repre sentative of the cone's rotational speed via signal carrier 16.
Cover plate 18 provides access to magnetic pick-up 8. Heat sensor 17 also provides a signal via line 19 representative of the heat of the atomizer. Resin feed line 9 connects to feed channel 5, which is shown for purposes of illustration in figure 2 at a different angular location than the actual position shown in figures 4, 5 and 8.
Resin plate 7 is fixed to housing 3 by cap screws 26. An O-ring is provided at 25 to prevent leakage of resin.
Figure 3 illustrates in cross section in further detail the housing 3, with the cone, motor and resin plate removed. The resin plate 7 fits over hub 33 to form the resin flow path. Cut-outs 36 are milled in the body of the housing for weight reduction. A bore 34, (not shown in Figure 2) is provided in the housing communicating with cut-out 36 by channel 38 to provide cooling air flow from the air line 12, through the motor cavity, and out bore 34. A cap is provided for the outer end 39 of bore 34. Channels 42 and 44 are provided for sensor 8 and line 16 respectively.
Figures 6 and 6A illustrate the cone 2. It has a rear opening 48 which fits over resin plate 7. Holes 30 are formed in the face 45 of the cone and may form two complete continuous circumferential rows as partially illustrated in Figure 6. The holes are drilled in a slightly spiralling offset manner (i.e.
not parallel to the axis of rotation nor to each other) for better resin flow. Edge 32 is a sharp knife edge. Conical surface 31 preferably diverges from face 45 at an angle of about 37 degrees.
j~.,~.......... .
s . ~ ,;,. . .
-~ ~ 3 ~ 2 Figure 7 and 7A show the resin plate, which is secured to housing 3 through holes 47.
Figure 8 illustrates in better detail the resin feed channel 5. The end of channel 5 communicates with an angled bore 50 which carries the resin into area 51 behind the resin plate.
In operation, cone 2 is rotated by motor 4 at high speed.
Liquid resin enters via resin feed-line 9 under pressure and follows the path shown by arrows 11 through opening 13, through opening 29 between resin plate 7 and housing 3, and into chamber 28 where the resin is aerated and propelled by a centrifugal force through apertures 30, onto and along the cone inside surface 31, and onto sharp edge 32. High centrifugal forces cause the resin to leave the knife edge 32 as a fog lying in a plane perpendicular to the axis of rotation of the cone.
As will be apparent to those skilled in the art in the light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.
, .. . .
$. -s,.
. . . :.~ -
Claims (5)
1. A centrifugal atomizer for producing a fog of atomized liquid comprising:
a) a housing;
b) a cone mounted for rotation in said housing, said cone comprising an inner conical surface, a face truncating said inner conical surface and provided with a plurality of apertures adjacent the inner conical face, said face thereby forming an annular chamber behind said face, and wherein the outer edge of said conical surface forms a sharp knife edge;
c) means for rotating said cone at high speed; and d) means in said housing for supplying liquid to said annular chamber.
a) a housing;
b) a cone mounted for rotation in said housing, said cone comprising an inner conical surface, a face truncating said inner conical surface and provided with a plurality of apertures adjacent the inner conical face, said face thereby forming an annular chamber behind said face, and wherein the outer edge of said conical surface forms a sharp knife edge;
c) means for rotating said cone at high speed; and d) means in said housing for supplying liquid to said annular chamber.
2. The atomizer of claim 1 wherein said cone is rotatably mounted upon a non-rotating hub secured to said housing.
3. The atomizer of claim 2 wherein said face has a plurality of apertures spaced around the circumference of said face, said apertures connecting the inside surface of said cone to said annular chamber.
4. The atomizer of claim 3 wherein said inner conical surface diverges from said face at an angle of approximately 37 degrees.
5. The atomizer of claim 1 wherein said housing further com-prises a plate secured to said housing and forming a passageway for the flow of liquid between said plate and said housing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA000615101A CA1330872C (en) | 1989-09-29 | 1989-09-29 | Centrifugal atomizer having a knife-edged rotating cone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA000615101A CA1330872C (en) | 1989-09-29 | 1989-09-29 | Centrifugal atomizer having a knife-edged rotating cone |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1330872C true CA1330872C (en) | 1994-07-26 |
Family
ID=4140874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000615101A Expired - Lifetime CA1330872C (en) | 1989-09-29 | 1989-09-29 | Centrifugal atomizer having a knife-edged rotating cone |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA1330872C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109806988A (en) * | 2019-04-13 | 2019-05-28 | 江苏华威机械制造有限公司 | A kind of metal bath jet deposition atomizer for preventing dross from gaging somebody |
EP4115983A1 (en) | 2021-07-09 | 2023-01-11 | Evertree | Process for reducing build up of a water insoluble composition in a centrifugal atomizer |
-
1989
- 1989-09-29 CA CA000615101A patent/CA1330872C/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109806988A (en) * | 2019-04-13 | 2019-05-28 | 江苏华威机械制造有限公司 | A kind of metal bath jet deposition atomizer for preventing dross from gaging somebody |
CN109806988B (en) * | 2019-04-13 | 2023-10-03 | 江苏华威机械制造有限公司 | Molten metal jet deposition atomizer capable of preventing nodulation and nozzle blockage |
EP4115983A1 (en) | 2021-07-09 | 2023-01-11 | Evertree | Process for reducing build up of a water insoluble composition in a centrifugal atomizer |
WO2023281110A1 (en) | 2021-07-09 | 2023-01-12 | Evertree | Process for reducing build up of a water insoluble composition in a centrifugal atomizer |
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