JP2013116467A - Liquid atomizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust the states of atomization (an average particle size, for example) by liquefying the gas jetted by first and second gas jetting parts, and gasifying the liquid jetted by a liquid jetting part.SOLUTION: The liquid atomizer includes: a first orifice jetting a first fluid; a second orifice jetting a second fluid which is the same fluid as the first fluid; a third orifice jetting a third fluid which is a fluid different from the first fluid or the second fluid, toward a collision part where the first fluid jetted from the first orifice and the second fluid jetted from the second orifice collide with each other; an atomization area where atomized liquid particles are generated by allowing the first fluid, the second fluid and the third fluid to collide with one another at the collision part; and a switch-over part for replacing the fluid supplied to the first orifice and the second orifice with the fluid supplied to the third orifice.

Description

  The present invention relates to a liquid refinement apparatus (two-fluid nozzle apparatus).

  As a conventional two-fluid nozzle device, a structure in which liquid is supplied from the rear of the nozzle body and gas is supplied from the side of the nozzle body, or a structure in which both gas and liquid are supplied from the side of the nozzle body is known. (For example, Patent Document 1).

  Further, the applicant includes two gas injection units for injecting gas, and a liquid injection unit for injecting liquid, and a collision unit formed by colliding gases injected from the two gas injection units, A technique for atomizing the liquid by colliding with the liquid ejected by the liquid ejecting unit has been developed (Patent Document 2).

Japanese Patent Laid-Open No. 2008-18400 (FIG. 1) JP 2012-066168 A

  However, when a pipe for supplying gas or liquid is provided on the side part of the nozzle body as in Patent Document 1, a structure for connecting the pipes to project from the side surface, or It was necessary to increase the thickness of the side part of the nozzle body, and there was a limit to downsizing the two-fluid nozzle body.

  Patent Document 2 is an atomization method based on a new principle invented by the present applicant, and its applicability is very high, and new knowledge can be obtained in the development process, but problems to be solved newly arise. ing.

  In view of the above situation, the first problem of the present invention is that the two pipes for supplying two fluids have a double structure and are connected to the pipe from the rear of the nozzle body, so that they are suitable for miniaturization. An object of the present invention is to provide a liquid refinement apparatus.

  The second problem of the present invention is to adjust the temperature of the gas injected from the first and second gas injection units and the temperature of the liquid injected from the liquid injection unit, so that the atomization state (for example, the average particle diameter) It is an object of the present invention to provide a liquid refining device capable of adjusting the above.

  A third problem of the present invention is to change the gas injected from the first and second gas injection units to a liquid, and change the liquid injected from the liquid injection unit to a gas, so that the atomized state (for example, average particles) An object of the present invention is to provide a liquid micronizer capable of adjusting the diameter.

A liquid miniaturization apparatus for solving the first problem is as follows.
A long first tube for feeding the first fluid;
An outer flow passage connected to the first tube from the rear of the nozzle body and guiding the first fluid to the nozzle spray port;
In order to deliver the third fluid, a long second tube having an outer diameter smaller than the first tube inner diameter and disposed inside the first tube;
An inner flow passage is connected to the second tube from the rear of the nozzle body and guides the third fluid to the nozzle spray port.

  According to this configuration, the second pipe is arranged inside the first tube, and the double pipe is connected to the nozzle body from the rear of the nozzle body. And can be made small. In addition, the use of double pipes results in a very simple pipe structure and a great low cost effect. Furthermore, in a structure or equipment that does not have enough space, the structure of the nozzle body and the apparently single pipe (double pipe) that extends to the rear of the nozzle body make it possible to enter and arrange the interior. And operability are very good, and pinpoint spraying is possible.

In the above invention, the first fluid is preferably a gas and the third fluid is a liquid, but the opposite may be possible.

In addition, a liquid micronizer for solving the second problem is
A first orifice for ejecting a first fluid;
A second orifice part that is disposed to face the first orifice part at a predetermined angle and that injects a second fluid that is the same fluid as the first fluid;
A fluid different from the first fluid and the second fluid toward a collision portion where the first fluid ejected from the first orifice portion and the second fluid ejected from the second orifice portion collide with each other. A third orifice part for injecting a third fluid;
A refined area part that is an area in which the first fluid, the second fluid, and the third fluid are caused to collide with each other to generate refined liquid particles in the collision part;
A first temperature adjusting unit that adjusts temperatures of the first fluid ejected from the first orifice unit and the second fluid ejected from the second orifice unit;
A second temperature adjusting unit that adjusts the temperature of the third fluid ejected from the third orifice unit.

  According to this structure, the temperature of the 1st fluid injected from the 1st, 2nd orifice part and the temperature of the 3rd fluid injected from the 3rd orifice part can be adjusted, and the atomization state (for example, average particle diameter) Can be adjusted. According to the present invention, the higher the temperature, the smaller the average particle size of the fine particles. The first and second temperature control units can be configured to include, for example, a heater, a heat exchanger, and heat retaining means. For example, when the fluid is a liquid, it is preferable that the liquid is preheated and stored in a heat retaining means, and a pipe through which the fluid passes is provided with a heat insulating means. For example, when the fluid is a gas, it can be heated with a dryer.

  In the above invention, it is preferable that the first fluid and the second fluid are gas and the third fluid is a liquid, but the opposite may be possible. Further, when air is used as the gas, it may remain at room temperature. In the case of using room temperature air, the temperature adjustment unit does not need to substantially adjust the heating / decreasing temperature, but may have a heat retaining means so as to send air.

  As one embodiment of the invention, in the first state, the first temperature adjusting unit adjusts the temperature of the first and second fluids (for example, gas) to be higher than a predetermined temperature or room temperature, and the second temperature adjustment. The temperature of the third fluid (for example, liquid) is adjusted to be higher than a predetermined temperature in the unit. In the second state, the temperature of the liquid is adjusted to a predetermined temperature or lower by the first temperature adjusting unit, and the temperature of the gas is adjusted to a predetermined temperature or lower or room temperature by the second temperature adjusting unit. The predetermined temperature is, for example, room temperature (18 ° C. to 25 ° C.), average body temperature (35 ° C. to 37 ° C.), temperature in the range of 30 ° C. to 80 ° C., or the like.

As one embodiment of the invention, the first temperature adjusting unit includes a first tube for supplying the first fluid and the second fluid to the first orifice unit and the second orifice unit. And
The second temperature adjusting unit includes a second tube having an outer diameter smaller than the first tube inner diameter and disposed inside the first tube for feeding the third fluid. And
An outer flow passage connected to the first tube from the rear of the apparatus main body and guiding the first fluid and the second fluid to the first orifice portion and the second orifice portion, respectively;
An inner flow passage that is connected to the second tube from the rear of the apparatus main body and guides the third fluid to the third orifice portion.

  According to this configuration, the second tube is a double pipe in which the second tube is disposed inside the first tube, and the temperatures of the first, second, and third fluids are kept the same by exchanging heat with each other. (Or the temperature difference between them becomes smaller). By heating (decreasing) one fluid, both temperatures can be adjusted simultaneously.

In addition, a liquid micronizer for solving the third problem is
A first orifice for ejecting a first fluid;
A second orifice part that is disposed to face the first orifice part at a predetermined angle and that injects a second fluid that is the same fluid as the first fluid;
A fluid different from the first fluid and the second fluid toward a collision portion where the first fluid ejected from the first orifice portion and the second fluid ejected from the second orifice portion collide with each other. A third orifice part for injecting a third fluid;
A refined area part that is an area in which the first fluid, the second fluid, and the third fluid are caused to collide with each other to generate refined liquid particles in the collision part;
A switching unit for exchanging the fluid supplied to the first orifice unit and the second orifice unit and the fluid supplied to the third orifice unit.

  According to this configuration, the first and second fluids ejected from the first and second orifices are replaced with the third fluid, and the third fluid ejected from the third orifice is changed to the first fluid (second By changing to (fluid), the atomization state (for example, average particle diameter) can be adjusted. For example, when the first and second fluids are gas and the third fluid is liquid, the average particle diameter of the mist can be adjusted to be smaller than when the opposite first and second fluids are liquid and the third fluid is gas. The switching unit can be switched manually or can have an automatic mechanism for switching automatically.

  As one embodiment of the invention, in the first state, the switching unit supplies the same gas to the first orifice unit and the second orifice unit, and supplies a liquid to the third orifice. In the state, liquid is supplied to the first orifice part and the second orifice part, and gas is supplied to the third orifice part.

As one embodiment of the above invention, the liquid micronizer includes a spray outlet part provided so as to surround the periphery of the mist along the spray direction of the mist sprayed from the micronized area part,
A slit portion formed in a direction perpendicular to the spray direction axis of the mist is provided on a tip surface of the spray outlet portion. With this configuration, a finer mist can be generated by providing a slit at the tip of the spray outlet (from the outlet side of the miniaturized area or the position of the collision part to the tip of the spray outlet). The spray outlet part may be formed integrally with a member for forming the gas orifice, or may be formed by a separate member.

  As one embodiment of the invention, the spray outlet portion is inclined by 90 ° or more with respect to the spray direction axis of the mist, and the liquid atomization device is viewed from the front, An open portion is formed in a direction orthogonal to the gas injection direction axis from the second gas injection portion. By providing an opening in the direction in which the mist spreads in a fan shape, the mist can escape in the direction of the opening and the degree of collision with the wall surface of the spray outlet can be mitigated. Drops can be effectively suppressed. It is preferable to form the opening portion from the vicinity of the outlet of the liquid orifice because the mist can be further prevented from colliding with the wall surface. The width dimension of the open portion is preferably set (to the same width or larger than the same width) according to the cross-sectional width (shorter width) of the generated mist.

  As one embodiment of the invention, the slit portion is formed in the open portion.

  As one embodiment of the invention, the slit portion is in a direction orthogonal to the gas injection direction axis from the first gas injection portion and the second gas injection portion when the liquid atomizing device is viewed from the front. Is formed.

As one embodiment of the invention, a first temperature adjusting unit that adjusts temperatures of the first fluid ejected from the first orifice unit and the second fluid ejected from the second orifice unit;
A second temperature adjusting unit that adjusts the temperature of the third fluid ejected from the third orifice unit,
In the first state, the temperature of the gas is adjusted to be higher than a predetermined temperature or room temperature by the first temperature adjusting unit, and the temperature of the liquid is adjusted to be higher than the predetermined temperature by the second temperature adjusting unit,
In the second state, the temperature of the liquid is adjusted to a predetermined temperature or lower by the first temperature adjusting unit, and the temperature of the gas is adjusted to a predetermined temperature or lower by the second temperature adjusting unit.

  The predetermined temperature is, for example, room temperature (18 ° C. to 25 ° C.), average body temperature (35 ° C. to 37 ° C.), 30 ° C. to 80 ° C., or the like. For example, a mist having a temperature at which the body feels cold can be generated at an average body temperature or 42 ° C. (45 ° C.), and a mist having a temperature at which the body can feel warm can be generated. In this embodiment, the average particle diameter of the fog generated in the first state is smaller than the average particle diameter of the fog generated in the second state, and the temperature of the fog generated in the first state is generated in the second state. Higher than the temperature of the fog.

As one embodiment of the invention, the first temperature adjusting unit includes a first tube for supplying the first fluid and the second fluid to the first orifice unit and the second orifice unit. And
The second temperature adjusting unit includes a second tube having an outer diameter smaller than the first tube inner diameter and disposed inside the first tube for feeding the third fluid. And
An outer flow passage connected to the first tube from the rear of the apparatus main body and guiding the first fluid and the second fluid to the first orifice portion and the second orifice portion, respectively;
An inner flow passage that is connected to the second tube from the rear of the apparatus main body and guides the third fluid to the third orifice portion.

  According to this configuration, the second tube is a double pipe in which the second tube is disposed inside the first tube, and the temperatures of the first, second, and third fluids are kept the same by exchanging heat with each other. (Or the temperature difference between them becomes smaller). By heating (decreasing) one fluid, both temperatures can be adjusted simultaneously.

  In the present invention, the first tube and the second tube are, for example, a circle, an ellipse, or a polygon in cross-sectional view, but a circular hollow tube in cross-sectional view is preferable from the viewpoint of cost. The long tube has a longitudinal dimension that is, for example, 10 times or more and 20 times or more than the tube outer diameter, and the longitudinal dimension, the tube outer diameter, and the inner diameter are set according to the intended use of the product.

  Moreover, in this invention, it is preferable that a 2nd tube is freely arrange | positioned inside the hollow of a 1st tube, and the outer peripheral surface of the 1st tube and the outer peripheral surface of a 2nd tube are not adhering.

  Further, in the present invention, the difference (D1−D2) between the inner diameter (D1) of the first tube and the outer diameter (D2) of the second tube is 0.05 mm or more and 30 mm or less. From the viewpoint of (feeding speed, feeding amount), it is preferably 0.1 mm or more and 10 mm or less, and more preferably 0.5 mm or more and 5 mm or less. The difference (D1-D2) can be set according to the purpose of use of the two-fluid nozzle device, the nature of the two-fluid, the constituent material, and the like.

  Moreover, in this invention, it is preferable that the said 1st tube is comprised with the transparent material. Accordingly, the internal state can be observed, and for example, maintenance can be improved by observing clogging of foreign matter and the degree of contamination. Furthermore, it is preferable that the second tube is made of a transparent material. It is preferable that the second tube is also made of a transparent material because the inside of the second tube can be easily observed.

  In the present invention, it is preferable that the first tube and the second tube are soft tubes. Since the first tube and the second tube are flexible, the operability of the nozzle body is greatly improved. Also, the first tube and the second tube can be configured by a hard tube, and the first tube and the second tube are configured as a connecting tube in which the end of the hard tube and the end of the soft tube are connected. May be. Moreover, you may comprise a 1st tube and a 2nd tube with the tube containing a shape memory alloy.

  The first tube and the second tube can be made of a resinous or metallic material. An example of the soft tube is a soft resin plastic tube, and an example of the hard tube is a thermosetting resin plastic tube.

  As a liquid refinement | miniaturization apparatus, a well-known gas-liquid mixing nozzle (2 fluid nozzle) and the nozzle of the said patent document 2 can be illustrated. Examples of the nozzle body include metal, plastic, rubber, and a mixture of them. The “gas” supplied to the two-fluid nozzle is not particularly limited, and examples thereof include air, clean air, high oxygen concentration air, inert gas, and the like, and “liquid” is not particularly limited. , Cosmetic liquids such as water, ionized water and lotion, chemical liquids such as pharmaceutical liquids, bactericidal liquids and sterilizing liquids, paints, coating agents, solvents and resins.

  In this invention, it is preferable to provide the pressure control part which controls the pressure for sending each fluid. By automatically (or manually) adjusting the pressure for sending each fluid, for example, the amount of air at the outlet of each orifice and the amount of mist spray can be freely changed. Examples of the pressure control device include a pressure control valve and a pressure regulator.

It is an external appearance schematic diagram of a two-fluid nozzle apparatus (liquid refinement | miniaturization apparatus). It is a schematic diagram which shows an example of the internal structure of a two-fluid nozzle apparatus (liquid refinement | miniaturization apparatus). It is a schematic diagram which shows the front of a nozzle spraying opening. It is a figure for demonstrating a gas orifice front-end | tip part (1st, 2nd orifice part). It is a figure for demonstrating a gas orifice front-end | tip part (1st, 2nd orifice part). It is a figure for demonstrating a gas orifice front-end | tip part (1st, 2nd orifice part). It is a figure for demonstrating the spraying state of a two-fluid nozzle apparatus (liquid refinement | miniaturization apparatus). It is a figure for demonstrating the spraying state of a two-fluid nozzle apparatus (liquid refinement | miniaturization apparatus). It is a schematic diagram which shows the opposing arrangement | positioning angle (injection angle) of a 1st, 2nd orifice part. It is a graph which shows the relationship between water temperature and an average particle diameter. It is a graph which shows the relationship between the air quantity at the time of making a 1st, 2nd fluid into gas, and making the 3rd fluid into a liquid, and an average particle diameter. It is a graph which shows the relationship between the air quantity at the time of making the 1st, 2nd fluid into a liquid, and making the 3rd fluid into gas, and an average particle diameter.

<Embodiment 1>
Hereinafter, a two-fluid nozzle device (corresponding to a liquid micronizer) of this embodiment will be described with reference to FIGS. FIG. 1 is a schematic external view of the two-fluid nozzle device 1. The first tube 19a is connected to the first tube joint 18 at the nozzle body rear B with the nozzle spray port A as the front of the nozzle body. Inside the first tube 19a, a second tube 19b is arranged to form a double piping structure. In the three-way joint 20, the first tube 19 a is connected to the first supply side tube 21, and the second tube 19 b is connected to the second supply side tube 22. A configuration in which the first tube 19a and the second tube 19b are not connected by the three-way joint 20 is also possible.

  2A and 2B are schematic views showing an example of the internal structure of the two-fluid nozzle device 1. FIG. The first tube 19 a is connected to the first tube joint 18. The second tube 19 b extends forward of the nozzle body from the end of the first tube 19 a and is connected to the second tube joint 17. The gas (first fluid) fed through the first tube 19a is guided to the nozzle spray port A through the outer flow passage R1. Further, the liquid (third fluid) fed by the second tube 19b is guided to the nozzle spray port A through the inner flow passage R2.

  The nozzle body includes an adapter 15 into which the protrusion 18 a of the first tube joint 18 is inserted, a gas orifice case 13 that is fitted (connected) to the adapter 15 by a screw action, and a gas orifice case 13. A gas orifice tip 12 having a flange 12a connected by being pressed by the hook 13a, a second tube joint 17 to which the second tube 19b is connected, and a protrusion 17a of the second tube joint 17 are inserted. The liquid orifice holding part 14 connected to each other and the liquid orifice tip 11 connected to the tip of the liquid orifice holding part 14. The male spiral portion of the adapter 15 and the female spiral portion of the gas orifice case 13 are fitted with screws, and are completely sealed with the packing 16. The hook portion 13a of the gas orifice case 13 presses the flange portion 12a of the gas orifice tip portion 12, a part of the inner surface of the gas orifice tip portion 12 presses the outer surface of the liquid orifice tip portion 11, and the liquid orifice tip portion 11 is liquid. Since it fits in the front-end | tip part of the orifice holding | suppressing part 14, the airtightness of the outer side flow path R1 and the inner side flow path R2 in a nozzle main body is maintained, and it does not leak out.

  3A, 3B and 3C are detailed views of the gas orifice tip 12. FIG. 3B is a front view of the spray port A of FIG. 3A, and FIG. 3C shows an xx cross section of FIG. 3B. 4A and 4B show an example of fog generation and a spray state at the nozzle spray port A. FIG. 12a is the flange part mentioned above. Reference numerals 12b and 12b 'denote two passages through which gas flows. A first orifice portion 12b and a second orifice portion 12b 'are formed respectively. 12c is a slit part. Gases (G1, G2) ejected from the two gas passages 12b and 12b ′ collide with each other (form the collision part 100 in FIG. 4A), and the liquid L ejected from the liquid orifice tip part 11a collides with this. (In other words, two gas streams collide with one injected liquid stream). In the refined area portion 120 where the liquid L collides so as to be sandwiched between the two gases G1 and G2, a mist F in which the liquid L is refined is generated, and the mist F is ejected along the wide-angle spray direction. (See FIGS. 4A and 4B). A slit portion 12c extending in a direction perpendicular to the gas passages 12b and 12b 'is formed along the spray direction of the fog F. The mist F spreading over a wide angle is sprayed through the space of the slit portion 12c.

  Further, the respective injection direction axes of the first orifice portion 12b and the second orifice portion 12b 'form a predetermined angle range. As shown in FIG. 5, the “predetermined angle range” formed by the respective injection direction axes of the first orifice part 12b and the second orifice part 12b ′ is the collision angle α of the fluid (gas) injected from each. Correspondingly, the “predetermined angle range (collision angle α)” is 90 ° to 180 °, preferably 100 ° to 150 °, and more preferably 110 ° to 150 °.

<Example of Embodiment 1>
In the first embodiment, the first tube 19a has an outer diameter of 6 mm, an inner diameter (D1) of 4 mm, and the second tube 19b has an outer diameter (D2) of 3 mm. The difference (D1-D2) is 1 mm. The 1st tube 19a and the 2nd tube 19b are double piping structures, and the tube longitudinal direction dimension is 2 m. The longitudinal dimension of the nozzle body (dimension from the spray port A to the rear B of the nozzle body) is 42 mm, and the outer diameter is 11 mm. The spray state was confirmed using air as the gas and water as the fluid. The average particle diameter (SMD) is 9 under the conditions that the air pressure Pa is 0.206 MPa, the water pressure is 0.188 MPa, the air quantity (Qa) of air injection is 10 NL / min, and the spray (water) quantity (Qw) is 50 ml / min. A spraying state of 87 μm was confirmed. The average particle size (SMD) was measured with a laser diffraction measuring device. The measurement position was 300 mm from the nozzle tip on the spray direction axis.

<Another Embodiment of Embodiment 1>
The present invention is not limited to the configuration of the nozzle body and the components (FIGS. 2 and 3), and other configurations can be employed. For example, in a conventional two-fluid nozzle, a first tube joint and a second tube joint are incorporated at the rear of the nozzle body, the first tube joint and the first fluid orifice passage are connected, and the second tube joint and the second tube joint are connected. It may be connected to the liquid orifice passage.

<Embodiment 2>
The two-fluid nozzle device (corresponding to a liquid micronizer) according to the second embodiment will be described below. The two-fluid nozzle device has the same configuration as that of the first embodiment and has a configuration unique to the second embodiment. The two-fluid nozzle device is arranged to face the first orifice portion (12b) for ejecting the first fluid and the first orifice portion (12b) at a predetermined angle (α = 90 ° to 180 °, 110 ° in FIG. 1). , A second orifice part (12b ′) for injecting a second fluid that is the same fluid as the first fluid, a first fluid injected from the first orifice part (12b), and an injection from the second orifice part (12b ′) A third orifice portion (11, orifice tip portion 11a) for injecting a third fluid, which is a fluid different from the first fluid and the second fluid, toward the collision portion (100) where the second fluid collided with, In the collision part (100), the first fluid part, the second fluid, and the third fluid collide with each other, the refined area part (120) that is the area where the refined liquid particles are generated, and the first orifice part (12b) ) Injected from the first fluid and And a first temperature adjusting unit for adjusting the temperature of the second fluid ejected from the second orifice unit (12b ′), and a temperature of the third fluid ejected from the third orifice unit (11, orifice tip 11a). A second temperature adjusting unit to be adjusted.

  In the first state, the first temperature adjusting unit adjusts the temperature of the first and second fluids (eg, gas) to a predetermined temperature (higher than that), and the second temperature adjusting unit sets the third fluid (eg, liquid). In the second state, the temperature of the liquid is adjusted to a predetermined temperature or lower by the first temperature adjusting unit, and the gas temperature is adjusted to the predetermined temperature by the second temperature adjusting unit. Adjust to below or room temperature.

  The first temperature control unit has a first tube (19a) for supplying the first fluid (gas) and the second fluid (gas) to the first orifice part (12b) and the second orifice part (12b ′). The second temperature control unit is configured to have an outer diameter smaller than the inner diameter of the first tube (19a) and is disposed inside the first tube (19a), and feeds the third fluid (liquid). The second tube (19b) is connected to the first tube (19a) from the rear of the apparatus body, and the first fluid (gas) and the second fluid (gas) are respectively connected to the first orifice ( 12b) and the outer flow passage (R1) leading to the second orifice part (12b ′) and the second tube (19b) from the rear of the apparatus main body, and the third fluid (liquid) is connected to the third orifice part (11). The inner flow passage (R2) leading to Obtain.

  The third fluid (liquid) is heated to a temperature higher than a predetermined temperature and stored in a heat retaining tank (not shown), and the heat retaining tank and the second supply side tube (22) are connected. The first supply side tube 21 is connected to an air compressor. In the double pipe, the liquid and gas naturally exchange heat and reach substantially the same temperature.

<Another example of Embodiment 2>
In the second embodiment, the first temperature control unit and the second temperature control unit are configured to have a double piping structure of the first tube and the second tube. It is also possible to employ a configuration in which each pipe is connected to the target orifice as a separate pipe.

  The first temperature adjusting unit and the second temperature adjusting unit control the temperature measuring device and the heating device (heater, heat exchanger) so that the temperature measured by the temperature measuring device becomes a predetermined temperature (range). And a control unit (a dedicated device or a computer) that performs the above-described operation.

<Example of Embodiment 2>
The outer diameter of the first tube 19a is 6 mm, the inner diameter (D1) is 4 mm, and the outer diameter (D2) of the second tube 19b is 3 mm. The difference (D1-D2) is 1 mm. The 1st tube 19a and the 2nd tube 19b are double piping structures, and the tube longitudinal direction dimension is 2 m. The longitudinal dimension of the nozzle body (dimension from the spray port A to the rear B of the nozzle body) is 42 mm, and the outer diameter is 11 mm. Air was used as the first and second fluids, and water was used as the third fluid. When the air amount Qa is fixed at 6.0 (Nl / min) and the water (spray) amount Qw is changed to 10, 20, 30, 40, 50 (ml / min), the water temperature is changed from 20 ° C. to 50 ° C. The average particle size SMD (μm) up to 0 ° C. was measured. The average particle size (SMD) was measured with a laser diffraction measuring device. The measurement position was 300 mm from the nozzle tip on the spray direction axis. Water is heated by a heating device capable of adjusting the temperature arbitrarily from 20 ° C. to 50 ° C., and air is room temperature (23 ° C.). The average particle size (SMD) was measured with a laser diffraction measuring device. The measurement position was 300 mm from the nozzle tip on the spray direction axis. The results are shown in Table 1 and FIG. In Examples 1 to 5, Qw corresponds to 10 to 50, respectively.

  From Table 1 and FIG. 6, in Examples 1-5, the average particle diameter SMD of the produced mist tended to decrease in proportion to the temperature (from about 5 μm to about 10 μm). From this, it was confirmed that the average particle diameter of the mist could be adjusted by changing the temperature of the water temperature. Further, when looking at the average particle size SMD, Qw = 30 was the smallest, but when Qw was 40 and 50, the average particle size SMD was large. On the other hand, the average particle size SMD value of Qw = 10 and 20 was larger than that of Qw = 30. This is presumed that the water pressure is too low, the flow velocity is slow, and the impact force with the air is reduced, so that the miniaturization is worsened.

<Embodiment 3>
Hereinafter, the two-fluid nozzle device (corresponding to a liquid micronizer) of this embodiment will be described. The two-fluid nozzle device has the same configuration as that of the first embodiment and includes a configuration unique to the third embodiment. The two-fluid nozzle device is arranged to face the first orifice portion (12b) for ejecting the first fluid and the first orifice portion (12b) at a predetermined angle (α = 90 ° to 180 °, 110 ° in FIG. 1). , A second orifice part (12b ′) for injecting a second fluid that is the same fluid as the first fluid, a first fluid injected from the first orifice part (12b), and an injection from the second orifice part (12b ′) A third orifice portion (11, orifice tip portion 11a) for injecting a third fluid, which is a fluid different from the first fluid and the second fluid, toward the collision portion (100) where the second fluid collided with, In the collision unit 100, the first fluid part, the second fluid, and the third fluid collide with each other, and a refined area part (120A) that is an area in which the refined liquid particles are generated; the first orifice part (12b); Second orifice part (12 b ′) and a switching part (not shown) for exchanging the fluid supplied to the third orifice part (11, orifice tip part 11a) with each other.

  In the first state, the switching unit supplies the same gas to the first orifice unit (12b) and the second orifice unit (12b ′) and supplies the liquid to the third orifice unit (11), and the second state. The liquid is supplied to the first orifice part (12b) and the second orifice part (12b ′), and the gas is supplied to the third orifice part (11).

  As another embodiment, the first fluid (gas) ejected from the first orifice part (12b) and the first fluid (gas) ejected from the second orifice part (12b ′) are adjusted in temperature. You may further provide a temperature control part and the 2nd temperature control part which adjusts the temperature of the 3rd fluid (liquid) injected from a 3rd orifice part (11a). In the first state, the temperature of the gas is adjusted to be higher than a predetermined temperature by the first temperature adjusting unit, and the temperature of the liquid is adjusted to be higher than the predetermined temperature by the second temperature adjusting unit. The temperature of the liquid can be adjusted to a predetermined temperature or lower by the adjusting unit, and the temperature of the gas can be adjusted to a predetermined temperature or lower by the second temperature adjusting unit.

  The first temperature control unit has a first tube (19a) for supplying the first fluid (gas) and the second fluid (gas) to the first orifice part (12b) and the second orifice part (12b ′). The second temperature control unit is configured to have an outer diameter smaller than the inner diameter of the first tube and is disposed inside the first tube (19a), and is used for feeding the third fluid (liquid). 2 tubes (19b) are connected to the first tube (19a) from the rear of the apparatus body, and the first fluid (gas) and the second fluid (gas) are respectively connected to the first orifice portion (12b) and An outer flow passage (R1) that leads to the second orifice part (12b ′) and an inner side that leads from the rear of the apparatus main body to the second tube (19b) and guides the third fluid (liquid) to the third orifice part (11) A flow passage (R2). The first tube and the second tube have the same configuration as in the first and second embodiments.

  The switching unit can also be switched manually. The switching unit can also be configured with an automatic mechanism that switches automatically. For example, an automatic mechanism such as a solenoid valve can be used.

<Example of Embodiment 3>
The outer diameter of the first tube 19a is 6 mm, the inner diameter (D1) is 4 mm, and the outer diameter (D2) of the second tube 19b is 3 mm. The difference (D1-D2) is 1 mm. The 1st tube 19a and the 2nd tube 19b are double piping structures, and the tube longitudinal direction dimension is 2 m. The longitudinal dimension of the nozzle body (dimension from the spray port A to the rear B of the nozzle body) is 42 mm, and the outer diameter is 11 mm. A case where air was used as the first and second fluids and water was used as the third fluid was taken as Example 1, and vice versa.

  In Example 1, the average particle diameter SMD (μm) when the water (spray) amount Qw is fixed at 50 (ml / min) and the air amount Qa is changed to 6.0 to 20.0 (Nl / min). Was measured.

  In Example 2, the average particle diameter SMD (μm) was measured when the water (spray) amount Qw was fixed at 200 (ml / min) and the air amount Qa was changed from 0 to 8.0 (Nl / min). did.

  The measurement position was 300 mm from the nozzle tip on the spray direction axis. Water is 20 ° C and air is room temperature (23 ° C). The average particle size (SMD) was measured with a laser diffraction measuring device. The measurement position was 300 mm from the nozzle tip on the spray direction axis. The results of Example 1 are shown in Table 2 and FIG. 7, and the results of Example 2 are shown in Table 3 and FIG.

  From Tables 2 and 3 and FIGS. 7 and 8, it was found that the average particle diameter tends to decrease in proportion to the air amount. In Example 1, although the mist spray amount is small, the average particle size is small, while in Example 2, the mist spray amount is large, but the average particle size is large. The first embodiment has a configuration suitable for miniaturization as compared with the second embodiment. On the other hand, Example 2 is suitable for making a mist having a coarser average particle diameter than Example 1. In other words, the average particle diameter of the mist can be adjusted by switching between gas and liquid in the switching unit. Further, by allowing the temperature of the fluid to be adjusted as in the second embodiment, the average particle diameter of the mist can be freely set by combining two elements of fluid switching and fluid temperature adjustment.

DESCRIPTION OF SYMBOLS 1 Two-fluid nozzle apparatus 11 3rd orifice part 12b 1st orifice part 12b '2nd orifice part 13 Gas orifice case 14 Liquid orifice holding | suppressing part 15 Adapter 16 Packing 17 Second tube joint 18 First tube joint 19a First tube 19b First 2 Tube A Spray port B Rear of nozzle body R1 Outer passage R2 Inner passage

Claims (4)

A first orifice for ejecting a first fluid;
A second orifice part that is disposed to face the first orifice part at a predetermined angle and that injects a second fluid that is the same fluid as the first fluid;
A fluid different from the first fluid and the second fluid toward a collision portion where the first fluid ejected from the first orifice portion and the second fluid ejected from the second orifice portion collide with each other. A third orifice part for injecting a third fluid;
A refined area part that is an area in which the first fluid, the second fluid, and the third fluid are caused to collide with each other to generate refined liquid particles in the collision part;
A liquid refinement apparatus comprising: a switching unit for exchanging fluid supplied to the first orifice unit and the second orifice unit and fluid supplied to the third orifice unit. In the first state, the switching unit supplies the same gas to the first orifice unit and the second orifice unit and supplies liquid to the third orifice. In the second state, the switching unit includes the first orifice unit and The liquid refinement apparatus according to claim 1, wherein a liquid is supplied to the second orifice part and a gas is supplied to the third orifice part. A first temperature adjusting unit that adjusts temperatures of the first fluid ejected from the first orifice unit and the second fluid ejected from the second orifice unit;
A second temperature adjusting unit that adjusts the temperature of the third fluid ejected from the third orifice unit,
In the first state, the temperature of the gas is adjusted to be higher than a predetermined temperature or room temperature by the first temperature adjusting unit, and the temperature of the liquid is adjusted to be higher than the predetermined temperature by the second temperature adjusting unit,
3. In the second state, the temperature of the liquid is adjusted to a predetermined temperature or lower by the first temperature adjusting unit, and the temperature of the gas is adjusted to a predetermined temperature or lower or room temperature by the second temperature adjusting unit. The liquid micronizer described in 1. The first temperature control unit includes a first tube for supplying the first fluid and the second fluid to the first orifice unit and the second orifice unit;
The second temperature adjusting unit includes a second tube having an outer diameter smaller than the first tube inner diameter and disposed inside the first tube for feeding the third fluid. An outer flow passage connected to the first tube from the rear of the apparatus main body and guiding the first fluid and the second fluid to the first orifice portion and the second orifice portion, respectively;
The liquid refinement device according to any one of claims 1 to 3, further comprising: an inner flow passage that is connected to the second tube from a rear side of the device main body and guides the third fluid to the third orifice portion.

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