KR20160074243A - A Nozzle Assembly for Atomizing Liquid - Google Patents

Abstract

The present invention relates to a liquid atomizing nozzle assembly and, particularly, to a liquid atomizing nozzle assembly capable of forming homogeneous spray particle at low pressure. The liquid atomizing nozzle assembly comprises: a fluid supply body which includes a liquid passage (112a) and a gas passage (112b) and separates and transfers a liquid and gas; an induction cap (12) which includes a liquid path (LP) to induce the transfer of the liquid and a gas flow hole (127) to induce the transfer of the gas along the circumference surface of the liquid path (LP); a vortex generator (14) which is combined with the induction cap (12) and is connected to the liquid path (LP); and a spray cap (15) which is composed of a spray hole (152) to spray a fluid discharged from the vortex generator (14), and an induction housing (151) to surround the circumferential surface of the vortex generator (14). The gas is induced to the circumferential surface of the vortex generator (14) and is discharged through the spray hole (152).

Description

A Nozzle Assembly for Atomizing Liquid < RTI ID = 0.0 >

The present invention relates to a liquid atomizing nozzle assembly, and more particularly, to a liquid atomizing nozzle assembly that enables the formation of uniform atomized particles at low pressures.

The tube formed at the end of the flow path is referred to as a nozzle so that liquid or gas is ejected at high speed into the free space. Nozzles are known in the art that are designed to reach specific areas of solids, liquids, and gases in defined amounts, and have various structures. For example, nozzles can be applied for surface coating in production processes of semiconductors, displays or mobile products. Semiconductors, displays, or mobile products are gradually changing to non-planar, aspherical, or three-dimensional shapes, fused with evolving technology in the field of materials. It is necessary that the ejection pressure or the amount of ejected liquid be accurately controlled in order to obtain a level of the coating surface required in the surface coating process of such a product. Also, the size of the particles in the coating process can be a major factor affecting the coating quality. For example, in order to form fine particles of 20 m or less, it is necessary to adjust the nozzle diameter so as to correspond thereto. However, the smaller the nozzle diameter, the smaller the discharge pressure and the nozzle length may be limited. In order to solve such a problem, there is a demand for a nozzle having a required quality and a structural stability.

Prior art relating to nozzles is disclosed in < RTI ID = 0.0 > Pub. No. 2005-0117416 < / RTI > The prior art discloses a two fluid injection nozzle having a structure that allows the liquid to avoid contact with liquid and fixed walls so that the liquid does not have a velocity gradient due to friction with the fixed wall surface for fine and uniform sized spray. The prior art is a two fluid injection nozzle comprising: a housing constituting a body having a plurality of mixing holes formed at a lower end thereof; And an inner structure having a gas injection port which is inserted into a central portion of the housing to form a spacer between the housing and the compressor, and a liquid injection port which is coaxial with the mixing port and supplies the liquid to the mixing port, The present invention relates to a two-fluid injection nozzle including a plurality of fluid injection nozzles. The proposed prior art has a disadvantage in that the spacing of the spraying nozzles can be reduced by forming spacers in the spraying nozzles, but the spraying range can be reduced and clogging of the spraying nozzles can occur.

Another prior art related to nozzles is Registered Patent No. 1363021, " Spray Nozzle ". The prior art is to provide a spray nozzle for generating particulates at low pressure and having a low scattering air curtain jetting function, comprising a first passage for supplying a first fluid, a second passage for supplying a second fluid, A first passage connected to the manifold and connected to the first passage to form a first discharge port and a second passage connected to the second passage with a first vortex groove outside the first discharge port; A first vortex, which is coupled to the manifold to receive the first vortex and connected to the second passage inward to form a second discharge port, and connected to the third passage with a second vortex groove outside the second discharge port And a discharge port which is in contact with the second vortex groove to receive the second vortex element and is connected to the manifold and connected to the third passage to form a third discharge port, Disclosed is an injection nozzle including a cap. The proposed prior art has the disadvantage that the clogging phenomenon of the injection nozzle is solved, the uniformity of the sprayed fine particles and the injection structure of low pressure, but the diameter of the nozzle or the nozzle length can be limited.

The prior art or known nozzles are operated at high pressures and have the disadvantage that it is difficult to form uniform microparticles and at the same time it is difficult to atomize liquids at a non-flow rate.

The present invention is intended to solve the problems of known nozzles and has the following purpose.

Prior Art 1: Published Patent No. 2005-0117416 (published by Korea Institute of Energy Research, December 14, 2005) 2 Fluid injection nozzle Prior Art 2: Registration No. 1363021 (Innobis Co., Ltd., published Feb. 14, 2014) Spray nozzle

It is an object of the present invention to provide a liquid atomizing nozzle assembly which is capable of operating at low pressures while allowing uniform microparticles to be formed and enabling atomization of a large amount of liquid.

According to a preferred embodiment of the present invention, a liquid atomizing nozzle assembly comprises: a fluid supply body formed with a liquid passage and a gas passage, the fluid supply body separating and transporting liquid and gas; An induction cap in which a liquid path (LP) for guiding the transfer of the liquid is formed, and a gas flow hole for guiding the transfer of gas along the circumferential surface of the liquid path (LP) is formed; A vortex generator coupled to the induction cap and connected to the liquid path (LP); And a spray cap including a spray hole for spraying the fluid discharged from the vortex generator and an induction housing surrounding the circumferential surface of the vortex generator. The gas is guided to the circumferential surface of the vortex generator and discharged through the spray hole.

According to another preferred embodiment of the present invention, in the liquid path LP according to claim 1, the liquid path LP comprises a first path and a second path having different cross-sectional areas, and the second path having a small cross- Extension is possible.

According to another preferred embodiment of the present invention, the liquid path (LP) has at least one hole for discharging liquid laterally to the lower end of the second path having a small cross-sectional area.

According to another preferred embodiment of the present invention, in the vortex generator according to claim 1, a vortex forming flow passage is formed.

According to another preferred embodiment of the present invention, an induction tip is formed at an end portion of the induction cap, at least a part of which has a different cross-sectional area along an extending direction.

According to another preferred embodiment of the present invention, the gap between the tip of the induction cap and the spray hole is adjustable.

According to another preferred embodiment of the present invention, in the induction cap according to claim 1, an induction groove for guiding the flow of the gas induced through the gas induction hole is formed.

According to another preferred embodiment of the present invention, the liquid atomizing nozzle assembly according to the present invention firstly forms fine particles by collision of liquid and gas in a vortex generator, and further forms fine particles while being injected into an annular passage. This allows fine particles to be formed at low pressure while simultaneously allowing the formation of fine particles for a large volume of liquid. Further, the liquid atomizing nozzle assembly according to the present invention is applied to a gas cooling and gasifier for a high temperature combustion furnace to remove heavy metals such as nitrogen oxides (NOx), SO2, mercury, arsenic or chromium. In addition, the nozzle assembly according to the present invention can be applied to a system for spraying a liquid mixed with an agent for ozone generation or deodorization, while being installed in a workplace or a plant facility so as to be applicable to the removal of noxious gases .

1A and 1B show an embodiment of a liquid atomizing nozzle assembly according to the present invention.
2 shows an embodiment of an induction cap, a vortex generator and a spray cap applied to a nozzle assembly according to the present invention.
3 shows an embodiment of the operation of the nozzle assembly according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

1A and 1B show an embodiment of a liquid atomizing nozzle assembly 10 according to the present invention.

1A and 1B, a nozzle assembly 10 according to the present invention includes a fluid supply body 11 formed with a liquid passage 112a and a gas passage 112b, for separating and transferring a liquid and a gas; An induction cap 12 formed with a liquid path LP for guiding the transfer of the liquid and having a gas flow hole 127 for guiding the transfer of the gas along the circumferential surface of the liquid path LP; An eddy generator (14) coupled to the induction cap (12) and connected to the liquid path (LP); And a spray cap (15) consisting of a spray hole (152) for spraying fluid discharged from the vortex generator (14) and an induction housing (151) surrounding the circumferential surface of the vortex generator (14) Is guided to the circumferential surface of the generator (14) and discharged through the spray hole (152).

The nozzle assembly 10 according to the present invention may be applied to or used with devices such as any air conditioners, dust collectors, dust collecting filters, or air circulation devices that purify the air by spraying the liquid in particulate form . The liquid may contain components for various types of sterilization or deodorization. In addition, the gas supplied through the nozzle assembly 10 may be a part of indoor or outdoor air supplied or circulated through a separate supply device. The nozzle assembly 10 according to the present invention may be installed separately or used together with other apparatuses, and may be applied to various kinds of liquid spraying, and is not limited by the type of apparatus to be installed or the type of discharged fluid.

The nozzle assembly 10 includes a fluid supply body 11 for introducing liquid and gas from the outside; An induction cap 12 for transferring fluid supplied from the fluid supply body 11 through a predetermined path; A vortex generator 14 for generating a vortex from the fluid being transferred; And a spray cap 15 for spraying the fluid supplied from the vortex generator 14 to the outside in the form of fine particles.

The fluid supply body 11 may have a T-type connection valve or connector structure having a liquid passage 112a and a gas passage 112b formed on both sides and a supply passage 113 formed in a central portion. The liquid passage 112a and the gas passage 112b may be connected to an appropriate external supply unit or an external passage. The liquid introduced through the liquid passage 112a can be guided to the induction cap 12 via the supply passage 113 and the gas introduced through the gas passage 112b can be guided to the gas induction hole May be guided to the induction cap 12 via the cap 161. Thus, the liquid and the gas can be transported through separate paths.

As shown in Fig. 1B, the liquid passage 112a may be supplied to the liquid passage LP formed in the supply passage 113 and the induction cap 12. The gas passage GP may be formed on the side of the supply passage 113 and the gas passage GP may be connected to the gas passage 112b. The gas passage (GP) may be formed around one or more of the supply passages 113 and may be formed, for example, in a tube shape. The gas introduced into the gas flow path (GP) can then be supplied to the gas flow hole (127) formed in the induction cap (12).

A connection pad 16 having at least one gas induction hole 161 formed between the supply passage 113 and the induction cap 12 for inducing movement of gas from the gas passage GP to the gas flow hole 127 . The connection pad 16 can function as a gas guiding passage while simultaneously providing a packing function of coupling the supply passage 113 and the induction cap 12. The connecting pad 16 may be a plate-like structure having a coupling hole at the center, for example, and a gas induction hole 161 for conveying the gas guided from the gas passage GP along the circumferential surface thereof may be formed. The formation of the gas guiding hole 161 and hence the induction of the gas can be made in various ways or structures, and the present invention is not limited to the embodiments shown.

The induction cap 12 may have the function of guiding the liquid and gas supplied from the induction feeding body 11 to the eddy generator 14. The induction cap (12) comprises a liquid path (LP) formed in the longitudinal direction at the center and formed by a first path and a second path; A guide block 123 formed at one end of the liquid path LP; An induction tip 125 formed at the other end of the liquid path LP; The induction cap (12) has a coupling flange (121) that engages the fluid supply body (11) by means of a coupling means (13) such as a lock nut. And a swirling hole 125a for guiding the liquid led along the liquid path LP to the swirler 14.

The induction cap 12 is brought into contact with the induction feeding body 11 by fitting the engaging flange 121 to the circumferential surface of the induction feeding body 11 and fastening the engaging means 13 such as a fastening nut to the upper side of the engaging flange 121 11). The liquid path LP can be formed into a shape passing through the disk-shaped coupling flange 121 and the lower end can be connected to the supply passage 113. The liquid path LP may have a structure in which a plurality of portions having different cross-sectional areas are connected along the path to be transported. 1B, the lower portion of the liquid path LP forms a first path having a relatively large cross-sectional area, and the portion where the liquid path LP is connected to the vortex generator 14 is a portion having a relatively small cross- 2 path can be formed. The first path may be connected to the supply path 113, and the second path may be connected to the vortex hole 125a. In this way, by connecting the excited portions having different cross-sectional areas, the supplied liquid can be quickly introduced into the vortex generator 14. [ The liquid path LP can be made up of a plurality of paths having different cross-sectional areas, and the relative length of each path can be determined by spray conditions such as the amount of liquid supplied or the size of the particles to be formed.

A guide block 123 may be formed at a portion where the liquid path LP is connected to the supply passage 113 and a plurality of gas flow holes 127 may be formed around the guide block 123. The guide block 123 may have a structure that may be formed in the lower portion of the liquid path LP and protrude in a cylindrical shape from the inner surface of the engaging flange 121. [ And the liquid path LP may be formed in a structure in which the lower end is coupled to the guide block 123 and extends in the direction of the vortex generator 14. [ A gas flow hole 127 may be formed along the periphery of the cylindrical guide block 123. The induction block 123 may have a plurality of inclined groove-shaped induction passages formed along the cylindrical surface, and the gas induced along the gas flow holes 127 is conveyed along the groove-shaped induction passage, (14). The gas flow holes 127 may be formed along the circumferential surface so as to be inclined with respect to the radial direction, and may be formed into, for example, a spiral shape. The gas flow holes 127 can be formed in various structures capable of induction, and the present invention is not limited to the embodiments shown.

The vortex generator 14 may have a hollow cylindrical shape, an insertion hole 141 formed in a central portion of a lower surface thereof, and a cylindrical shape with an opened upper surface. The induction tip 125 of the induction cap 12 may be disposed through the insertion hole 141 so as to be positioned in front of the spray hole 152 through the inside of the vortex generator 14. [ A vortex hole 125a formed under the induction tip 125 is located inside the vortex generator 14 so that liquid can be introduced into the vortex generator 14. [ A sealing ring 131 may be disposed at a boundary surface between the vortex generator 14 and the induction cap 12 to prevent the gas from flowing into the vortex generator 14. [

A vortex can be formed primarily as the liquid guided through the liquid path LP is led into the vortex generator 14 through the vortex hole 125a. The liquid guided into the vortex generator 14 flows along the circumferential surface of the induction tip 125 while forming a vortex. The gas induced along the circumferential surface of the induction cap 12 also flows through the separation gap formed by the vortex generator 14 and the inner surface of the spray cap 15. The liquid and gas then meet at the end of induction tip 125.

The spray cap 15 may consist of a hollow cylindrical induction housing 151 for allowing the vortex generator 14 to be received therein and a spray hole 152 formed on one side of the induction housing 151. One surface of the induction housing 151 may be horn-shaped around the spray hole 152 and the peripheral surface of the other opened surface may be in contact with the engagement flange 121. The inner diameter of the spray hole 152 may be larger than the outer circumferential surface of the induction tip 125 so that a ring-shaped gap may be formed between the spray hole 152 and the induction tip 125 . The outer circumferential surface of the vortex generator 14 may have a smaller diameter than the inner circumferential surface of the induction housing 151, thereby forming a separation gap through which the gas can be guided.

The liquid sprayed through the spray hole 152 along the circumferential surface of the induction tip forming a vortex from the inside of the vortex generator 14 is guided through the separation gap and guided along one side of the inclined induction housing 151 And sprayed through the spray holes 152 in the form of fine particles by a gas which forms a secondary vortex. As described above, the nozzle assembly 10 according to the present invention is configured such that a vortex is formed first in the vortex generator 14 and then a vortex is formed secondarily by the gas induced along the circumferential surface of the vortex generator 14 So that fine particles having a uniform diameter can be formed while simultaneously forming fine particles regardless of the amount of the liquid.

The tip of the induction tip 125 extends with different diameters along the longitudinal direction and the spray cap 15 is positionally adjustable along the length of the induction cap 12, The distance between the spray hole 125 and the spray hole 152 can be adjusted. For example, by adjusting the tightening of the engaging means 13. And the amount of the liquid sprayed through the spray hole 152 or the average diameter of the fine particles can be appropriately adjusted by such an interval adjustment. The gap may be adjusted according to the pressure of the liquid or gas introduced by arranging the elastic means on the surface where the coupling flange 121 and the induction housing 151 are in contact with each other.

As described above, the nozzle assembly 10 according to the present invention includes a fluid supply body 11, a connection pad 16, an induction cap 12, a vortex generator 14, and the like, so as to generate a particulate by applying a pressurized gas to the liquid. And the spray cap 15 are connected to each other. The liquid can be guided along a path whose cross-sectional area decreases along the extension length, and the gas guided to the circumferential surface of the vortex generator 14 through the connection pad 16 can be accelerated while being rotated. The liquid is made into a particulate form while a vortex is first formed inside the vortex generator 14 and is sprayed in a ring or annular form through the spray hole 152 together with the gas induced along the circumferential surface of the vortex generator 14. [ It can be made into a particulate matter. This enables the formation of fine particles having a uniform diameter by a low gas pressure, so that the power consumption of the compressor is reduced and the operation of the nozzle assembly 10 with the same compression performance is enabled.

Each device applied to the nozzle assembly 10 having such a structure will be described below.

2 shows an embodiment of an induction cap 12, a vortex generator 14 and a spray cap 15 applied to a nozzle assembly according to the present invention.

Referring to Fig. 2 (a), the induction cap 12 includes a coupling flange having a fixed plate 121a and a closed peripheral wall 121b. A guide block 123 disposed in a central portion of the fixed plate 121a so as to have a substantially cylindrical shape and formed with an induction groove 123a; A liquid path (LP) extending from the guide block (123) into a hollow cylindrical shape; And an induction tip 125 which forms an end of the liquid path LP. A vortex hole 125a may be formed below the induction tip 125 to penetrate the circumferential surface of the liquid path LP.

The fastening plate 121a may have any shape known in the art and the closed perimeter wall 121b may have an annular wall structure having a constant height and thickness. The guide block 123 may be formed to have a height greater than the closed circumferential wall 121b as a whole. A gas flow hole 127 may be formed in a circular shape between the closed perimeter wall 121b and the guide block 123. [ The guide groove 123a may be formed to be inclined with respect to the radial direction of the guide block 123 so that the width and depth of the guide groove 123a may be reduced from the outer surface of the guide block 123 and a plurality of guide grooves 123a may be formed along the circumferential direction. Due to such a structure, the pressurized gas introduced through the gas flow hole 127 can be moved along the guide groove 123a while forming a swirl at a high speed.

The vortex holes 125a may be formed along the circumferential surface of the liquid path LP and the induction tip 125 may have the shape of a truncated cone. The shape of the truncated cone is such that the fluid is guided along the inclined surface to improve the shear force and uniform spraying of the fluid.

2, the vortex generator 14 includes an insertion hole 141 through which the liquid path LP passes, and a vortex forming body 142 that forms a circular wall at the center of the insertion hole 141, And a vortex forming flow path 143 formed in the vortex forming body 142. The vortex-forming body 142 may form a circular wall structure having a uniform thickness and height as a whole. The vortex forming flow path 143 may be formed in the shape of a separation gap separating the circular wall into a plurality of pieces. The vortex forming channel 143 may be formed to extend in an inclined direction from the outside of the vortex forming body 142 toward the inside toward the depth. Due to this structure, the gas accelerates rapidly and forms a vortex and collides with the liquid.

2, the spray cap 15 includes an induction housing 151, an induction housing 151, and a spray hole 152 formed at an end portion of the induction housing. . The surface on which the spray hole 152 is formed may be an inclined surface and may be formed of a plurality of inclined surfaces having different inclination levels. For example, the circumferential surface adjacent to the spray hole 152 can be made annular so as to have a large inclination depending on the spraying range of the liquid, and the middle portion can have a small inclination Can be made. The large inclination refers to an angle with respect to the longitudinal direction of the induction housing 151.

A spray cap 15 having various shapes can be applied to the nozzle assembly according to the present invention and the present invention is not limited to the embodiments shown.

The operation of the nozzle assembly according to the present invention will be described below.

3 shows an embodiment of the operation of the nozzle assembly according to the present invention.

Referring to Fig. 3, the liquid may be directed in the direction indicated by the arrow GF along the liquid passage 112a. And the high pressure gas can be guided along the gas passage 112b in the direction indicated by the arrow GP. The liquid flows along the liquid path LP formed in the induction cap 12 and can be gradually accelerated in the liquid path LP due to the path having different cross-sectional areas.

The gas is guided along the peripheral surface of the liquid path LP via the connection pad 16 and flows between the vortex generator 14 and the spray cap 15.

The liquid guided along the liquid path LP may be discharged into the vortex generator 14 through the vortex hole 125a and be directed upward of the vortex generator 14. [ The gas flows along the vortex forming flow path formed in the vortex generator 14, and collides with the liquid to form fine particles. The liquid and the gas are then atomized along the direction indicated by the arrow PF through the spray gap formed by the induction tip 125 and the spray hole 152 to form a particulate.

The spray range and the spray amount can be appropriately adjusted according to the level of inclination formed by the circumferential surface of the induction tip 125, whereby the average diameter of the particulates can be controlled. As described above, the nozzle assembly according to the present invention can appropriately control the transfer speed of the fluid in the transfer path of the gas or the transfer path of the liquid, so that uniform fine particles having appropriate diameters can be sprayed according to the performance of the compressor or the amount of the liquid. .

The nozzle assembly according to the present invention can be operated in various ways and the present invention is not limited to the embodiments shown.

The liquid atomizing nozzle assembly according to the present invention primarily forms fine particles by collision of liquid and gas in a vortex generator, and forms secondary particles while being injected into an annular passage again. This allows fine particles to be formed at low pressure while simultaneously allowing the formation of fine particles for a large volume of liquid. Further, the liquid atomizing nozzle assembly according to the present invention is applied to a gas cooling and gasifier for a high temperature combustion furnace to remove heavy metals such as nitrogen oxides (NOx), SO2, mercury, arsenic or chromium. In addition, the nozzle assembly according to the present invention can be applied to a system for spraying a liquid mixed with an agent for ozone generation or deodorization, while being installed in a workplace or a plant facility so as to be applicable to the removal of noxious gases .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: nozzle assembly 11: fluid supply body
12: induction cap 13: engaging means
14: vortex generator 15: spray cap
16: Connection pad
112a: liquid passage 112b: gas passage
113: Supply passage 121: Coupling flange
121a: Fixing plate 121b: Closed peripheral wall
123: guide block 123a: guide groove
125: induction tip 125a: vortex hole
127: gas flow hole 131: sealing ring
141: insertion hole 141: insertion hole
142: vortex forming body 143: vortex forming flow path
151: induction housing 152: spray hole
153: accommodation space 161: gas induction hole

Claims (7)

A fluid supply body 11 forming a liquid passage 112a and a gas passage 112b and separating and transferring the liquid and gas;
An induction cap 12 formed with a liquid path LP for guiding the transfer of the liquid and having a gas flow hole 127 for guiding the transfer of the gas along the circumferential surface of the liquid path LP;
An eddy generator (14) coupled to the induction cap (12) and connected to the liquid path (LP); And
And a spray cap (15) consisting of a spray hole (152) for spraying the fluid discharged from the vortex generator (14) and an induction housing (151) surrounding the circumferential surface of the vortex generator (14)
Wherein the gas is guided to the circumferential surface of the vortex generator (14) and discharged through the spray hole (152). The liquid atomizing nozzle assembly according to claim 1, wherein the liquid path (LP) comprises a first path and a second path having different cross-sectional areas, and the second path having a small cross-sectional area is extended by a predetermined length . The liquid atomizing nozzle assembly of claim 1, wherein the liquid path (LP) has at least one hole for discharging the liquid laterally to the lower end of the second path having a small cross-sectional area. The liquid atomization nozzle assembly of claim 1, wherein a vortex forming flow path (143) is formed in the vortex generator (14). The nozzle assembly of claim 1, wherein an induction tip (125) is formed at an end of the induction cap (12), the induction tip (125) having at least a portion of the induction cap (12) having a different cross-sectional area along an extension direction. The nozzle assembly of claim 1, wherein the distance between the tip of the induction cap (12) and the spray hole (152) is adjustable. The assembly of claim 1, wherein the induction cap (12) includes an induction block (123) having an induction groove (123a) for guiding the flow of gas induced through the gas flow hole (127).

Images