WO2014002770A1 - Liquid spraying device - Google Patents
Liquid spraying device Download PDFInfo
- Publication number
- WO2014002770A1 WO2014002770A1 PCT/JP2013/066236 JP2013066236W WO2014002770A1 WO 2014002770 A1 WO2014002770 A1 WO 2014002770A1 JP 2013066236 W JP2013066236 W JP 2013066236W WO 2014002770 A1 WO2014002770 A1 WO 2014002770A1
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- WIPO (PCT)
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- hole
- mesh
- liquid
- cross
- holes
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0623—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
- A61M11/005—Sprayers or atomisers specially adapted for therapeutic purposes using ultrasonics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M15/00—Inhalators
- A61M15/02—Inhalators with activated or ionised fluids, e.g. electrohydrodynamic [EHD] or electrostatic devices; Ozone-inhalators with radioactive tagged particles
- A61M15/025—Bubble jet droplet ejection devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0638—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced by discharging the liquid or other fluent material through a plate comprising a plurality of orifices
Definitions
- the present invention relates to a liquid spraying device, and more particularly to a liquid spraying device for atomizing and ejecting a liquid.
- a liquid spraying device that atomizes and ejects a liquid such as a chemical solution is generally a liquid storage part that stores liquid, a mesh part that has a large number of micropores, and a vibration source that is disposed so as to contact the mesh part. And comprising.
- a liquid is supplied from the liquid storage part between the mesh part and the vibration source.
- the liquid supplied between the mesh part and the vibration source is sprayed outward through the fine holes as the vibration source vibrates.
- Conventional liquid spray apparatuses are disclosed in, for example, Japanese Patent Application Laid-Open No. 2006-297226 (Patent Document 1) and Japanese Patent Application Laid-Open No. 7-256170 (Patent Document 2).
- JP 2006-297226 A Japanese Patent Laid-Open No. 7-256170
- the liquid spray device is used, for example, for the purpose of delivering a therapeutic agent for liquid respiratory diseases in the form of a mist and administering the therapeutic agent to the affected area by the patient inhaling the mist.
- a mesh part in which a through hole having a uniform hole diameter is formed is used, and a chemical liquid mist is generated by atomizing and ejecting the chemical liquid through the through hole of the mesh part.
- the chemical solution can only reach a certain site in the body. For this reason, in order to deliver the drug solution to multiple parts of the patient's body, it is necessary to inhale the drug solution multiple times using multiple mesh parts with different pore diameters, which imposes a burden on the patient and is inconvenient was there.
- the present invention has been made in view of the above problems, and a main object thereof is to provide a liquid spraying apparatus capable of simultaneously generating spray particles having different atomized particle diameters.
- the liquid spray device includes a thin plate-like mesh portion in which a through-hole is formed and a liquid supply portion that supplies a liquid to the mesh portion, and the liquid is atomized and ejected through the through-hole.
- a plurality of through holes having different cross-sectional shapes are formed in the mesh portion.
- the cross-sectional shape of the through hole may be varied for each predetermined range of the mesh portion.
- the cross-sectional shape of the through-hole may be varied in the radial direction of the mesh portion.
- the cross-sectional shape of the through-hole is changed gradually or stepwise from one of the central portion and the peripheral portion of the mesh portion toward the other. May be.
- the through-hole includes a large-area hole having a relatively large cross-sectional area and a small-area hole having a relatively small cross-sectional area, and one of the large-area hole and the small-area hole is formed at the center of the mesh part, May be formed at the periphery of the mesh portion.
- through holes having different cross-sectional shapes may be dispersed over the entire mesh portion.
- the through-hole includes a large-area hole having a relatively large cross-sectional area and a small-area hole having a relatively small cross-sectional area, and the large-area hole and the small-area hole are formed to be dispersed throughout the mesh portion. May be.
- the large-area hole and the small-area hole are exemplary representations of through-holes having two relatively different cross-sectional shapes, and the cross-sectional shape of the through-hole formed in the mesh portion is one of the two shapes. It is not limited to any of the above. That is, a through hole having a cross-sectional shape different from the large area hole and the small area hole may be formed in the mesh portion. For example, in addition to large-area holes and small-area holes, through-holes having a larger cross-sectional area than large-area holes, through-holes having an intermediate cross-sectional area between large-area holes and small-area holes, or small-area holes Further, a through hole having a smaller cross-sectional area may be formed in the mesh portion.
- the density of the through holes may be changed for each predetermined range of the mesh portion.
- the through holes may be formed sparsely in the center of the mesh part and densely in the peripheral part of the mesh part.
- a through-hole may be formed densely in the center part of a mesh part, and may be sparsely formed in the peripheral part of a mesh part.
- the mesh portion may be made of resin.
- spray particles having different atomized particle diameters can be generated at the same time, so that the drug solution can reach different parts of the patient's body, for example, the upper respiratory tract and the lungs at the same time. become.
- FIG. 1 is a perspective view showing an external configuration of a liquid spray device in Embodiment 1.
- FIG. 3 is a perspective view showing a bottle unit provided in the liquid spraying apparatus in Embodiment 1.
- FIG. It is a 1st perspective view which shows the state which the bottle unit with which the liquid spray apparatus in Embodiment 1 is equipped decomposed
- FIG. 3 is a cross-sectional view showing a disassembled state of a bottle unit provided in the liquid spray device in Embodiment 1.
- FIG. 3 is a perspective view showing a cross section taken along the line VI-VI in FIG. 2.
- FIG. 3 is a cross-sectional view showing a state during spraying of a bottle unit used in the liquid spraying apparatus in the first embodiment.
- 2 is a perspective view illustrating an outline of a configuration of a mesh portion according to Embodiment 1.
- FIG. 11 is a partial cross-sectional view of a mesh portion taken along line XI-XI in FIG. 10. It is a cross-sectional schematic diagram which shows the operation
- FIG. 6 is a perspective view illustrating an outline of a configuration of a mesh part according to a second embodiment.
- FIG. 15 is a partial cross-sectional view of a mesh portion taken along line XV-XV in FIG. 14. It is a fragmentary sectional view of the mesh part which follows the XVI-XVI line in FIG.
- FIG. 1 is a perspective view showing an external configuration of the liquid spraying apparatus 100.
- the liquid spray apparatus 100 according to the present embodiment is a so-called mesh nebulizer used for administering a therapeutic agent for respiratory system diseases to a patient.
- the liquid spraying apparatus 100 includes a main body unit 20 and a bottle unit 30.
- the main body 20 has a power switch 21 on the surface.
- a power source (not shown) and an electric circuit (not shown) for driving the liquid spray device 100 (vibrating a horn vibrator 40 described later) and the like are provided inside the main body 20.
- the bottle unit 30 is detachably attached to the main body unit 20.
- FIG. 2 is a perspective view showing the bottle unit 30.
- FIG. 3 is a first perspective view showing the bottle unit 30 in an exploded state.
- FIG. 4 is a second perspective view showing the bottle unit 30 in an exploded state.
- FIG. 5 is a cross-sectional view showing the bottle unit 30 in an exploded state.
- FIG. 6 is a perspective view of a cross section taken along the line VI-VI in FIG.
- the mesh portion 1 see FIGS. 3 to 5 (details will be described later) is not shown.
- the mesh portion 1, the support members 50 and 52, and the hermetic support packing 51 are not shown (the details thereof will be described later).
- FIG. 7 is a cross-sectional view corresponding to FIG.
- FIG. 8 is an enlarged sectional view showing the vicinity of the mesh portion 1 in FIG.
- the bottle unit 30 includes a mesh unit 1 (see FIGS. 1 and 3 to 5), a bottle unit 31 as a liquid storage unit, and a horn vibrator 40 (as a vibration source). 3 to 5).
- the mesh part 1 (Mesh part 1) A large number of fine through holes are formed in the mesh portion 1. Although details will be described later, the mesh portion 1 (see FIGS. 1 and 3 to 5) is disposed so as to face the surface 42 of the tip portion 41 of the horn vibrator 40 and to contact the surface 42.
- the mesh part 1 is made of a resin and is a molded product using a mold. Examples of the resin material forming the mesh portion 1 include polyamide resin, polyester, syndiopolystyrene, polysulfone, polyethersulfone, polyetheretherketone, polyetherimide, polyamideimide, PPS (polyphenylene sulfide), epoxy, and phenol. And polyimide. From the viewpoint of processability in resin molding, it is preferable to use, for example, polysulfone, polyetheretherketone, or PPS.
- the mesh part 1 may be made of metal.
- the mesh portion 1 may be formed of nickel alloy such as Ni—Pd (nickel-palladium) alloyed with a predetermined ratio, platinum, or the like.
- the mesh part 1 may be made of ceramics.
- the mesh part 1 may be formed of alumina, zirconia, silicon carbide, or the like.
- the mesh portion 1 of the present embodiment is formed as an independent member, but is not limited to this configuration.
- the mesh part 1 may be a thin plate-like part of an arbitrary member, for example, the support member 50 or the support member 52 described later and the mesh part 1 are integrally formed.
- bottom surface of bottle portion 31 is formed to be inclined.
- a liquid L such as a chemical solution (see FIG. 7) is stored inside the bottle portion 31.
- the bottle portion 31 is provided with a liquid injection port 33 located on the opposite side of the horn vibrator 40 and a tip opening 32 that gradually becomes narrower as the horn vibrator 40 is approached.
- a cap 35 is attached so as to close the liquid injection port 33.
- the cap 35 is supported by the support portion 35T so as to be rotatable in the direction of the arrow AR35 (see FIG. 2).
- the liquid injection port 33 of the bottle portion 31 is closed.
- the state in which the cap 35 closes the liquid injection port 33 is held by a fixing portion 35 ⁇ / b> K provided on the top of the cap 35.
- the front end opening 32 of the bottle portion 31 faces the front end portion 41 of the horn vibrator 40.
- the liquid L stored in the bottle portion 31 is supplied to the surface 42 of the tip portion 41 from the outside of the tip portion 41 of the horn vibrator 40.
- the bottle portion 31 has a large-capacity portion B and a small-capacity portion b that communicates with the large-capacity portion B through the tip opening 32 and faces the tip portion 41 of the horn vibrator 40.
- the small capacity portion b is an annular space S (see FIG. 5) between the inner wall 62 (see FIG. 6) of the opening 60 of the bottle unit 30 that sprays the atomized chemical liquid and the tip 41 of the horn vibrator 40. Reference).
- the horn vibrator 40 is disposed so as to face the tip opening 32 of the bottle portion 31.
- the horn vibrator 40 is located below the opening 60 provided in the bottle unit 30.
- an inner mesh cap 57 to be described later is detachably attached to the opening 60.
- support member 50 and support member 52 can be fitted to each other in a state where mesh portion 1 is sandwiched between support member 50 and support member 52. Configured. The mesh portion 1 is sandwiched between the support member 50 and the support member 52 that are fitted to each other on the tip portion 41 of the horn vibrator 40. The support member 50 and the support member 52 fix the mesh portion 1 so that the mesh portion 1 is in close proximity to the surface 42 of the horn vibrator 40 while sandwiching the mesh portion 1.
- the support member 50 and the support member 52 that are fitted to each other are attached to the inner peripheral portion of the hermetic support packing 51 formed in an annular shape.
- the support member 50 and the support member 52 that are fitted to each other are attached to the inner mesh cap 57 by the hermetic support packing 51.
- the outer peripheral portion of the hermetic support packing 51 is fitted into the inner mesh cap 57.
- the space between the support members 50 and 52 and the inner mesh cap 57 is sealed by the hermetic support packing 51.
- the inner mesh cap 57 is attached around the opening 60 so as to cover the opening 60 provided in the bottle unit 30.
- the inner mesh cap 57 is pivotally supported by the support portion 38T provided on the bottle portion 31 side so that the support portion 57T of the inner mesh cap 57 is rotatable.
- the air gap formed between the inner mesh cap 57 and the opening 60 is sealed by the sealing support packing 51.
- the sealing By the sealing, the liquid L and the liquid LL stored in the bottle part 31 are kept from leaking from the bottle part 31 to the outside. Thereby, even if it is a case where the liquid spraying apparatus 100 is inclined, the liquid L and the liquid LL inside the bottle part 31 do not leak outside.
- the support portion 57T of the inner mesh cap 57 is pivotally supported by the support portion 38T provided on the bottle portion 31 side.
- the inner mesh cap 57 is detachable from the opening 60 in a state where the mesh portion 1, the support members 50 and 52, and the hermetic support packing 51 are integrally attached to the inner mesh cap 57. It is attached.
- the mesh part 1 Since the mesh part 1 is attached to the inner mesh cap 57, the mesh part 1 can be easily washed by removing the inner mesh cap 57 from the opening 60 (rotating the inner mesh cap 57). It is possible.
- FIG. 9 is a cross-sectional view showing a state when the bottle unit 30 is sprayed.
- the bottle unit 30 is tilted as shown in FIG. 9, and the liquid L in the large-capacity portion B of the bottle portion 31 flows from the tip opening 32 into the small-capacity portion b. It flows into the space S.
- the liquid LL in the space S reaches the vicinity of the contact portion between the surface 42 of the tip portion 41 and the mesh portion 1 from the outside of the tip portion 41 of the horn vibrator 40.
- some of the through holes formed in the mesh portion 1 have the first cross-sectional shape, and the other through holes are Since the plurality of through-holes having a second cross-sectional shape different from the first cross-sectional shape and different cross-sectional shapes are formed in the mesh portion 1, liquid droplets of liquid LL having different particle diameters are generated simultaneously. .
- the liquid LL in the small-capacity portion b is, as described above, the tip portion 41 and the inner wall 62 (see FIG. 6), the surface tension rises to the vicinity of the atomizing portion, and can be further supplied to the mesh portion 1 by the vibration of the horn vibrator 40.
- FIG. 10 is a perspective view illustrating the outline of the configuration of the mesh unit 1 according to the first embodiment.
- FIG. 11 is a partial cross-sectional view of the mesh portion 1 along the line XI-XI in FIG.
- the mesh part 1 of the first embodiment has a thin plate-like outer shape, and the planar shape is a circular shape.
- the disc-shaped mesh portion 1 has a central portion 2 near the center of the circle and a peripheral portion 3 near the outer periphery of the circle.
- a plurality of nozzle-like through holes 6 are formed in the mesh portion 1.
- the surface of the mesh portion 1 on the side where the liquid LL passing through the through-hole 6 flows into the through-hole 6 is defined as the inlet surface 1B (see FIG. 11), and the surface of the mesh portion 1 on the side where the liquid LL flows out of the through-hole 6 If it is set as the exit surface 1A (refer FIG. 11), the through-hole 6 penetrates the mesh part 1 in the thickness direction from the entrance surface 1B of the mesh part 1 to the exit surface 1A, and is formed.
- FIG. 10 and FIG. 14 to be described later a part of the through holes 6 formed in the central part 2 and part of the peripheral part 3 of the mesh part 1 are representatively illustrated. That is, in these drawings, the through hole 6 (large area hole 6A or small area hole 6B) is also formed in the portion of the mesh part 1 where the through hole 6 is not shown. It is formed throughout. Typically, several thousands of through holes 6 are formed in one mesh part 1.
- the cross-sectional shape of the through-hole 6 is greatly exaggerated with respect to the mesh portion 1 rather than the through-hole 6 formed in the actual mesh portion 1 for easy understanding. Please note that.
- the plurality of through holes 6 include a large area hole 6A having a relatively large cross-sectional area and a small area hole 6B having a relatively small cross-sectional area.
- the mesh part 1 is intentionally formed with a plurality of through holes 6 having different cross-sectional shapes. Through holes 6 having different cross-sectional shapes are formed for each predetermined range of the mesh portion 1, and the cross-sectional shapes of the through holes 6 are different along the radial direction of the mesh portion 1.
- the cross-sectional shape of the through-hole 6 here means the shape of the through-hole 6 that appears in a cross-section obtained by cutting the mesh portion 1 in the thickness direction along the center of the through-hole 6. It means the area of the cross section of the through hole 6 that appears in the cross section of the mesh portion 1 cut in the thickness direction along the center of the through hole 6.
- a large area hole 6A is formed in the central part 2 of the mesh part 1
- a small area hole 6B is formed in the peripheral part 3 of the mesh part 1.
- the cross-sectional shape of the through-hole 6 changes from the peripheral part 3 of the mesh part 1 toward the central part 2, and the cross-sectional area of the through-hole 6 gradually increases from the peripheral part 3 of the mesh part 1 to the central part 2.
- the through hole 6 is formed.
- the cross section shown in FIG. 11 is a plane that passes through the center of the large area hole 6A and the center of the small area hole 6B.
- the cross sectional area of the large area hole 6A that appears in this cross section is the small area hole. It is larger than the cross-sectional area of 6B.
- the large-area hole 6A and the small-area hole 6B have the same opening diameter on the outlet surface 1A, but have different cross-sectional areas due to different cross-sectional shapes. As a result, the large-area hole 6A has a small cross-sectional area. It is larger than the cross-sectional area of 6B.
- the central portion 2 indicates a range where the large area hole 6A is formed
- the peripheral edge portion 3 indicates a range where the small area hole 6B is formed.
- the boundary between the central portion 2 and the peripheral portion 3 is optimally set so that a necessary amount of spray particles of the liquid LL having a desired diameter can be generated at an arbitrary position in the radial direction of the mesh portion 1.
- the through-hole 6 of the present embodiment shown in FIG. 11 is formed in a funnel shape.
- the through-hole 6 has a maximum diameter on the entrance surface 1B, and the diameter gradually decreases toward the exit surface 1A.
- the through-hole 6 becomes a straight tube in the vicinity of the exit surface 1A and opens to the exit surface 1A.
- the large area hole 6A and the small area hole 6B differ in the length in which the straight tubular portion in the vicinity of the exit surface 1A extends in the thickness direction of the mesh portion 1.
- the straight tubular portion of the small area hole 6B has a relatively long length in the thickness direction of the mesh portion 1, and the straight tubular portion of the large area hole 6A has a relatively short length in the thickness direction of the mesh portion 1.
- the large area hole 6A and the small area hole 6B have curved inner wall surfaces that are curved with the same curvature on the inlet surface 1B side of the straight tubular portion.
- the opening diameter of the large area hole 6A opening to the entrance surface 1B is larger than the opening diameter of the small area hole 6B opening to the entrance surface 1B.
- the area of the large area hole 6A is larger than the area of the small area hole 6B. It is getting bigger.
- the through hole 6 is not limited to the shape shown in FIG. 11, and can be formed in an arbitrary shape.
- the shape of the through hole 6 may be a cone or a pyramid, may be a folded cone or a pyramid, may be a combination of a cylinder and a cone, a prism and a pyramid.
- the combination shape may be sufficient.
- the large area hole 6A and the small area hole 6B are formed in a conical shape, the diameter D1 of the large area hole 6A and the diameter D2 of the small area hole 6B on the exit surface 1A are made equal, and the taper of the large area hole 6A.
- the sectional area of the large area hole 6A may be larger than the sectional area of the small area hole 6B.
- FIG. 12 is a schematic cross-sectional view showing the operation of atomizing and ejecting the liquid LL through the through-hole 6 of the mesh portion 1.
- the horn vibrator 40 vibrates ultrasonically in the vertical direction in FIG.
- the horn vibrator 40 has a function as a liquid supply part for supplying the liquid LL to the inside of the through hole 6 formed in the mesh part 1.
- the diameter of the spray particles is shown as a specific numerical value, and this numerical value indicates a peak value in the distribution of the spray particles generated in the liquid spray device 100. That is, the particle diameters of the spray particles actually generated from the liquid spray device 100 are distributed, and the spray particles having the diameters shown below are generated most frequently, but only the spray particles having the specifically shown particle diameters are present. Note that it does not originate from the liquid spray device 100.
- the liquid particles LP1 ejected from the large area hole 6A have a diameter larger than the diameter D1 (see FIG. 11) of the large area hole 6A.
- the liquid particles LP2 ejected from the small area hole 6B have a diameter larger than the diameter D2 (see FIG. 11) of the small area hole 6B.
- the spray particles ejected from the through hole 6 having an opening diameter of 3 ⁇ m on the exit surface 1A have a diameter of 5 ⁇ m.
- the relationship between the diameter of the through hole 6 and the diameter of the spray particles is an example, and the spray particles may have a diameter smaller than the diameter of the through hole 6 under different conditions.
- the volume of the large area hole 6A is larger than that of the small area hole 6B, a larger amount of liquid LL can be stored in the large area hole 6A than in the small area hole 6B.
- the amount of the liquid LL pushed out and ejected from the large area hole 6A is larger than the amount of the liquid LL pushed out and ejected from the small area hole 6B. Therefore, the diameter of the liquid particle LP1 ejected from the large area hole 6A is larger than the diameter of the liquid particle LP2 ejected from the small area hole 6B.
- the distribution range of the generated particle diameters is widened, and spray particles having different atomized particle diameters, that is, liquid particles LP1 and LP2 are generated simultaneously. Can do. Since spray particles of liquids having different particle diameters can be generated from a single mesh portion 1, the liquid spray device 100 using the mesh portion 1 allows the drug solution to reach different parts of the patient's body at the same time. Is possible.
- a particle size of 10 ⁇ m or more is required to deposit a drug solution on the nose or throat, and a particle size of 5 to 10 ⁇ m is required to deposit a drug solution on the upper respiratory tract, and the drug solution is deposited on the bronchus.
- a particle size of 3 to 5 ⁇ m is required, and in order to deposit a drug solution in the alveoli, a particle size of 1 ⁇ m or less is required.
- the cross-sectional shape of the through hole 6 is adjusted so that the diameter of the liquid particle LP1 ejected from the large area hole 6A is 10 ⁇ m and the diameter of the liquid particle LP2 ejected from the small area hole 6B is 3 ⁇ m. Also good.
- the cross-sectional shape of the through hole 6 may be adjusted so that the diameter of the liquid particle LP1 is 5 ⁇ m and the diameter of the liquid particle LP2 is 3 ⁇ m.
- the mesh portion 1 In order to optimally manage the diameters of the liquid particles LP1 and LP2, it is necessary to manufacture the mesh portion 1 by managing the cross-sectional shapes of the large area hole 6A and the small area hole 6B with high accuracy. Since the mesh part 1 of this Embodiment is manufactured by metal mold
- the resin mesh portion 1 can be manufactured as a molded product using a mold manufactured with high accuracy, the cross-sectional shape of the through-hole 6 can be freely adjusted. Therefore, by preparing a mold having an appropriate shape and size, it is possible to easily manufacture the mesh portion 1 of the present embodiment in which the large area hole 6A and the small area hole 6B having an arbitrary cross-sectional shape are formed. It is.
- FIG. 13 is a partial cross-sectional view showing an outline of the configuration of the mesh portion 1 of the modification.
- the small area hole 6 ⁇ / b> B is formed in the central part 2 of the mesh part 1
- the large area hole 6 ⁇ / b> A is formed in the peripheral part 3 of the mesh part 1. Is different. Arrangement of the large area hole 6A and the small area hole 6B formed in the mesh part 1 is arbitrary. Even in the arrangement shown in FIG. 10, the small area hole 6B is formed in the central part 2 shown in FIG.
- the mesh part 1 is formed with the large area hole 6A and the small area hole 6B having different cross-sectional shapes, and the through holes 6 penetrating the mesh part 1 in the thickness direction are different from each other.
- An example having two types of cross-sectional areas has been described. It is not restricted to this example,
- the through-hole 6 may have three or more types of cross-sectional areas.
- the through hole 6 having a smaller cross-sectional area than the small area hole 6B may be formed in the mesh portion 1.
- the through-hole 6 has many different cross-sectional shapes, it replaces with the structure which changes the cross-sectional shape of the through-hole 6 stepwise in the radial direction of the mesh part 1 shown to FIG. 10 and FIG. It is also possible to gradually change the cross-sectional shape of the through hole 6 from one of the 2 and the peripheral edge 3 toward the other.
- FIG. 14 is a perspective view illustrating an outline of the configuration of the mesh unit 1 according to the second embodiment.
- FIG. 15 is a partial cross-sectional view of the mesh portion 1 taken along line XV-XV in FIG.
- FIG. 16 is a partial cross-sectional view of the mesh portion 1 along the line XVI-XVI in FIG.
- through holes 6 having different cross-sectional shapes are dispersed throughout the mesh portion 1, and the large area hole 6 ⁇ / b> A and the small area hole 6 ⁇ / b> B are distributed over the entire mesh portion 1. It is different from the first embodiment in that it is formed in a distributed manner.
- the mesh part 1 of Embodiment 2 as shown in FIG.
- both the large area hole 6A and the small area hole 6B are formed in the center part 2 of the mesh part 1, and as shown in FIG. Both the large area hole 6 ⁇ / b> A and the small area hole 6 ⁇ / b> B are formed in the peripheral edge 3 of the mesh part 1.
- the embodiment Even if both the large area hole 6A and the small area hole 6B are formed in the entire mesh portion 1 and the large area hole 6A surrounded by the small area hole 6B is formed as in the second embodiment, the embodiment The effect that spray particles having different atomized particle diameters described in 1 can be generated at the same time can be obtained similarly.
- the arrangement of the large-area holes 6A and the small-area holes 6B is arbitrary, for example, considering that the through-holes 6 are formed to be excessively dense and the strength of the mesh portion 1 is locally reduced.
- the large area hole 6A and the small area hole 6B may be formed at an arbitrary position.
- the density of the through-hole 6 is changed for every fixed range of the mesh part 1, the through-hole 6 is formed sparsely in the center part 2 of the mesh part 1, and the mesh part 1
- the through-holes 6 are densely formed in the peripheral edge 3.
- the liquid spray particles are generated by the ultrasonic vibration of the horn vibrator 40. Therefore, it is considered that the spray particles are more likely to be generated at the central portion 2 of the mesh portion 1 and are relatively less likely to be generated at the peripheral portion 3 of the mesh portion 1.
- the density of the through-holes 6 formed in the mesh part 1 is intentionally distributed, and the through-holes 6 are formed relatively sparsely in the central part 2 where the spray particles are likely to be generated.
- the through-holes 6 are formed relatively densely at the peripheral edge portion 3 that is difficult to generate. Thereby, liquid spray particles can be generated more uniformly on the entire surface of the mesh portion 1. Therefore, it is possible to stably generate a large amount of liquid spray particles using the liquid spray device 100.
- the density of the through holes 6 may be gradually increased from the center of the mesh portion 1 to the outer periphery.
- the density of the through holes 6 may be increased stepwise from the center to the outer periphery.
- the density of the through holes 6 is increased from the central part 2 to the peripheral part 3 of the mesh part 1 by varying the density of the through holes 6 in the radial direction of the mesh part 1.
- the density of the through-holes 6 is increased gradually or stepwise from the peripheral edge 3 to the central part 2 of the mesh part 1, and the through-holes 6 are formed densely in the central part 2 of the mesh part 1.
- the through holes 6 may be formed sparsely in the peripheral edge 3 of the mesh part 1.
- the density of the through holes 6 formed in the mesh portion 1 can be arbitrarily designed in accordance with the desired particle diameter of the spray particles.
- the through-hole 6 penetrating the mesh portion 1 in the thickness direction includes the large-area hole 6A and the small-area hole 6B having two mutually different cross-sectional areas
- the mesh part 1 may be formed with through holes 6 having three or more different cross-sectional areas corresponding to a desired particle diameter.
- liquid spray particles are generated by ultrasonic vibration of the horn vibrator 40
- a SAW vibrator may be used instead of the horn vibrator.
- an arbitrary vibrator may be brought into contact with the entrance surface or the exit surface of the mesh portion to generate the spray particles of the liquid.
- the liquid spray device of the present invention is particularly advantageously applied to a liquid spray device that allows a patient to inhale a therapeutic drug for a nebulized respiratory disease and simultaneously reach the different sites in the patient's body. obtain.
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Abstract
Provided is a liquid spraying device that can simultaneously generate sprayed particles having different atomized particle diameters. This liquid spraying device comprises a thin-plate-shaped mesh part (1) having through holes (6) formed therein, and a liquid supply part that supplies a liquid to the mesh part (1), the liquid spraying device atomizing and jetting the liquid by making same pass through the through holes (6). A plurality of through holes (6A, 6B) having different cross-sectional shapes from one another are formed in the mesh part (1).
Description
本発明は、液体噴霧装置に関し、特に、液体を霧化して噴出するための液体噴霧装置に関する。
The present invention relates to a liquid spraying device, and more particularly to a liquid spraying device for atomizing and ejecting a liquid.
薬液などの液体を霧化して噴出する液体噴霧装置は、一般的に、液体を貯留する貯液部と、多数の微細孔を有するメッシュ部と、メッシュ部に当接するように配置される振動源と、を備える。メッシュ部と振動源との間に、貯液部から液体が供給される。メッシュ部と振動源との間に供給された液体は、振動源が振動することによって、微細孔を通して外部に向けて噴霧される。従来の液体噴霧装置は、たとえば、特開2006-297226号公報(特許文献1)および特開平7-256170号公報(特許文献2)に開示されている。
A liquid spraying device that atomizes and ejects a liquid such as a chemical solution is generally a liquid storage part that stores liquid, a mesh part that has a large number of micropores, and a vibration source that is disposed so as to contact the mesh part. And comprising. A liquid is supplied from the liquid storage part between the mesh part and the vibration source. The liquid supplied between the mesh part and the vibration source is sprayed outward through the fine holes as the vibration source vibrates. Conventional liquid spray apparatuses are disclosed in, for example, Japanese Patent Application Laid-Open No. 2006-297226 (Patent Document 1) and Japanese Patent Application Laid-Open No. 7-256170 (Patent Document 2).
液体噴霧装置はたとえば、液体状の呼吸器系疾患の治療薬を霧状にして送り出し、患者がその霧を吸込むことによって患部に治療薬を投与する用途などに使用される。従来の液体噴霧装置では、均一な孔径の貫通孔を形成したメッシュ部が用いられ、メッシュ部の貫通孔を通過させて薬液を霧化し噴出することで薬液ミストを発生していた。この場合、メッシュ部の場所によって噴霧状態が異なることに起因して薬液ミストの粒径にある一定のバラツキが発生するものの、薬液は体内のある一定部位にしか到達できない。そのため、患者の体内の複数の部位に薬液を届かせるためには、孔径の異なる複数のメッシュ部を使用して複数回薬液を吸込む必要があり、患者に負担を強いることになり使い勝手に劣る問題があった。
The liquid spray device is used, for example, for the purpose of delivering a therapeutic agent for liquid respiratory diseases in the form of a mist and administering the therapeutic agent to the affected area by the patient inhaling the mist. In the conventional liquid spraying apparatus, a mesh part in which a through hole having a uniform hole diameter is formed is used, and a chemical liquid mist is generated by atomizing and ejecting the chemical liquid through the through hole of the mesh part. In this case, although a certain variation in the particle size of the chemical solution mist occurs due to the difference in the spray state depending on the location of the mesh portion, the chemical solution can only reach a certain site in the body. For this reason, in order to deliver the drug solution to multiple parts of the patient's body, it is necessary to inhale the drug solution multiple times using multiple mesh parts with different pore diameters, which imposes a burden on the patient and is inconvenient was there.
本発明は上記の課題に鑑みてなされたものであり、その主たる目的は、霧化粒子径の異なる噴霧粒子を同時に発生できる液体噴霧装置を提供することである。
The present invention has been made in view of the above problems, and a main object thereof is to provide a liquid spraying apparatus capable of simultaneously generating spray particles having different atomized particle diameters.
本発明に係る液体噴霧装置は、貫通孔の形成された薄板状のメッシュ部と、メッシュ部に液体を供給する給液部と、を備え、貫通孔を通過させて液体を霧化し噴出する。メッシュ部には、互いに断面形状の異なる複数の貫通孔が形成されている。
The liquid spray device according to the present invention includes a thin plate-like mesh portion in which a through-hole is formed and a liquid supply portion that supplies a liquid to the mesh portion, and the liquid is atomized and ejected through the through-hole. A plurality of through holes having different cross-sectional shapes are formed in the mesh portion.
上記液体噴霧装置において、メッシュ部の一定範囲毎に貫通孔の断面形状を異ならせてもよい。メッシュ部の径方向に貫通孔の断面形状を異ならせてもよく、この場合、メッシュ部の中央部と周縁部との一方から他方に向けて漸次または段階的に貫通孔の断面形状を変化させてもよい。貫通孔は、相対的に断面積の大きい大面積孔と相対的に断面積の小さい小面積孔とを含み、大面積孔と小面積孔との一方がメッシュ部の中央部に形成され、他方がメッシュ部の周縁部に形成されてもよい。
In the above liquid spraying device, the cross-sectional shape of the through hole may be varied for each predetermined range of the mesh portion. The cross-sectional shape of the through-hole may be varied in the radial direction of the mesh portion. In this case, the cross-sectional shape of the through-hole is changed gradually or stepwise from one of the central portion and the peripheral portion of the mesh portion toward the other. May be. The through-hole includes a large-area hole having a relatively large cross-sectional area and a small-area hole having a relatively small cross-sectional area, and one of the large-area hole and the small-area hole is formed at the center of the mesh part, May be formed at the periphery of the mesh portion.
上記液体噴霧装置において、メッシュ部の全体に亘って断面形状の異なる貫通孔を分散させてもよい。貫通孔は、相対的に断面積の大きい大面積孔と相対的に断面積の小さい小面積孔とを含み、メッシュ部の全体に亘って大面積孔と小面積孔とが分散して形成されてもよい。
In the liquid spraying device, through holes having different cross-sectional shapes may be dispersed over the entire mesh portion. The through-hole includes a large-area hole having a relatively large cross-sectional area and a small-area hole having a relatively small cross-sectional area, and the large-area hole and the small-area hole are formed to be dispersed throughout the mesh portion. May be.
なお、大面積孔と小面積孔とは相対的に異なる二つの断面形状を有する貫通孔を例示的に表現するものであり、メッシュ部に形成される貫通孔の断面形状が二つの形状のうちのいずれかであることを限定するものではない。すなわち、当該大面積孔および小面積孔とは異なる断面形状の貫通孔がメッシュ部に形成されていてもよい。たとえば、大面積孔と小面積孔とに加えて、大面積孔よりもさらに断面積の大きい貫通孔、大面積孔と小面積孔との中間の断面積の貫通孔、または、小面積孔よりもさらに断面積の小さい貫通孔がメッシュ部に形成されてもよい。
Note that the large-area hole and the small-area hole are exemplary representations of through-holes having two relatively different cross-sectional shapes, and the cross-sectional shape of the through-hole formed in the mesh portion is one of the two shapes. It is not limited to any of the above. That is, a through hole having a cross-sectional shape different from the large area hole and the small area hole may be formed in the mesh portion. For example, in addition to large-area holes and small-area holes, through-holes having a larger cross-sectional area than large-area holes, through-holes having an intermediate cross-sectional area between large-area holes and small-area holes, or small-area holes Further, a through hole having a smaller cross-sectional area may be formed in the mesh portion.
上記液体噴霧装置において、メッシュ部の一定範囲毎に貫通孔の疎密を変化させてもよい。貫通孔は、メッシュ部の中央部において疎に形成され、メッシュ部の周縁部において密に形成されてもよい。または貫通孔は、メッシュ部の中央部において密に形成され、メッシュ部の周縁部において疎に形成されてもよい。
In the above liquid spraying device, the density of the through holes may be changed for each predetermined range of the mesh portion. The through holes may be formed sparsely in the center of the mesh part and densely in the peripheral part of the mesh part. Or a through-hole may be formed densely in the center part of a mesh part, and may be sparsely formed in the peripheral part of a mesh part.
上記液体噴霧装置において、メッシュ部は樹脂製であってもよい。
In the liquid spray device, the mesh portion may be made of resin.
本発明の液体噴霧装置によると、霧化粒子径の異なる噴霧粒子を同時に発生することができるので、患者の体内の異なった部位、たとえば上気道と肺とに、同時に薬液を到達させることが可能になる。
According to the liquid spray device of the present invention, spray particles having different atomized particle diameters can be generated at the same time, so that the drug solution can reach different parts of the patient's body, for example, the upper respiratory tract and the lungs at the same time. become.
本発明に基づいた各実施の形態について、以下、図面を参照しながら説明する。各実施の形態の説明において、個数、量などに言及する場合、特に記載がある場合を除き、本発明の範囲は必ずしもその個数、量などに限定されない。各実施の形態の説明において、同一の部品、相当部品に対しては、同一の参照番号を付し、重複する説明は繰り返さない場合がある。特に制限が無い限り、各実施の形態に示す構成を適宜組み合わせて用いることは、当初から予定されていることである。
Embodiments according to the present invention will be described below with reference to the drawings. In the description of each embodiment, when referring to the number, amount, or the like, the scope of the present invention is not necessarily limited to the number, amount, or the like unless otherwise specified. In the description of each embodiment, the same parts and corresponding parts are denoted by the same reference numerals, and redundant description may not be repeated. Unless there is a restriction | limiting in particular, it is planned from the beginning to use suitably combining the structure shown in each embodiment.
[実施の形態1]
(液体噴霧装置100)
図1を参照して、本実施の形態における液体噴霧装置100について説明する。図1は、液体噴霧装置100の外観構成を示す斜視図である。本実施の形態の液体噴霧装置100は、呼吸器系疾患の治療薬を患者に投与するために使用される、いわゆるメッシュ式のネブライザである。液体噴霧装置100は、本体部20およびボトルユニット30を備える。 [Embodiment 1]
(Liquid spraying device 100)
With reference to FIG. 1, theliquid spraying apparatus 100 in this Embodiment is demonstrated. FIG. 1 is a perspective view showing an external configuration of the liquid spraying apparatus 100. The liquid spray apparatus 100 according to the present embodiment is a so-called mesh nebulizer used for administering a therapeutic agent for respiratory system diseases to a patient. The liquid spraying apparatus 100 includes a main body unit 20 and a bottle unit 30.
(液体噴霧装置100)
図1を参照して、本実施の形態における液体噴霧装置100について説明する。図1は、液体噴霧装置100の外観構成を示す斜視図である。本実施の形態の液体噴霧装置100は、呼吸器系疾患の治療薬を患者に投与するために使用される、いわゆるメッシュ式のネブライザである。液体噴霧装置100は、本体部20およびボトルユニット30を備える。 [Embodiment 1]
(Liquid spraying device 100)
With reference to FIG. 1, the
(本体部20)
本体部20は、表面に電源スイッチ21を有する。本体部20の内部には、液体噴霧装置100を駆動する(後述するホーン振動子40を振動させる)ための電源(図示せず)および電気回路(図示せず)などが設けられる。ボトルユニット30は、本体部20に対して着脱可能に取り付けられる。 (Main body 20)
Themain body 20 has a power switch 21 on the surface. A power source (not shown) and an electric circuit (not shown) for driving the liquid spray device 100 (vibrating a horn vibrator 40 described later) and the like are provided inside the main body 20. The bottle unit 30 is detachably attached to the main body unit 20.
本体部20は、表面に電源スイッチ21を有する。本体部20の内部には、液体噴霧装置100を駆動する(後述するホーン振動子40を振動させる)ための電源(図示せず)および電気回路(図示せず)などが設けられる。ボトルユニット30は、本体部20に対して着脱可能に取り付けられる。 (Main body 20)
The
(ボトルユニット30)
以下、ボトルユニット30の詳細について、図2~図8を参照して説明する。図2は、ボトルユニット30を示す斜視図である。図3は、ボトルユニット30の分解した状態を示す第1斜視図である。図4は、ボトルユニット30の分解した状態を示す第2斜視図である。図5は、ボトルユニット30の分解した状態を示す断面図である。 (Bottle unit 30)
The details of thebottle unit 30 will be described below with reference to FIGS. FIG. 2 is a perspective view showing the bottle unit 30. FIG. 3 is a first perspective view showing the bottle unit 30 in an exploded state. FIG. 4 is a second perspective view showing the bottle unit 30 in an exploded state. FIG. 5 is a cross-sectional view showing the bottle unit 30 in an exploded state.
以下、ボトルユニット30の詳細について、図2~図8を参照して説明する。図2は、ボトルユニット30を示す斜視図である。図3は、ボトルユニット30の分解した状態を示す第1斜視図である。図4は、ボトルユニット30の分解した状態を示す第2斜視図である。図5は、ボトルユニット30の分解した状態を示す断面図である。 (Bottle unit 30)
The details of the
図6は、図2中のVI-VI線に沿った矢視断面の斜視図である。図6においては、図示上の便宜のため、メッシュ部1(図3~図5参照)(詳細は後述する)は図示されていない。図6においては、同様に、メッシュ部1、支持部材50,52、および密閉支持パッキン51についても図示されていない(これらについても詳細は後述する)。図7は、図6に対応する断面図である。図8は、図7中におけるメッシュ部1の付近を拡大して示す断面図である。
FIG. 6 is a perspective view of a cross section taken along the line VI-VI in FIG. In FIG. 6, for convenience of illustration, the mesh portion 1 (see FIGS. 3 to 5) (details will be described later) is not shown. In FIG. 6, similarly, the mesh portion 1, the support members 50 and 52, and the hermetic support packing 51 are not shown (the details thereof will be described later). FIG. 7 is a cross-sectional view corresponding to FIG. FIG. 8 is an enlarged sectional view showing the vicinity of the mesh portion 1 in FIG.
図2~図5に示すように、ボトルユニット30は、メッシュ部1(図1,図3~図5参照)、貯液部としてのボトル部31、および、振動源としてのホーン振動子40(図3~図5参照)を備える。
2 to 5, the bottle unit 30 includes a mesh unit 1 (see FIGS. 1 and 3 to 5), a bottle unit 31 as a liquid storage unit, and a horn vibrator 40 (as a vibration source). 3 to 5).
(メッシュ部1)
メッシュ部1には、多数の微細な貫通孔が形成されている。詳細は後述されるが、メッシュ部1(図1,図3~図5参照)は、ホーン振動子40の先端部41の表面42に対向し、表面42に当接するように配置される。メッシュ部1は、樹脂製であり、金型を使用した金型成形品である。メッシュ部1を形成する樹脂材料としては、たとえばポリアミド系樹脂、ポリエステル、シンジオ型ポリスチレン、ポリサルフォン、ポリエーテルサルフォン、ポリエーテルエーテルケトン、ポリエーテルイミド、ポリアミドイミド、PPS(polyphenylene sulfide)、エポキシ、フェノール、ポリイミドなどが挙げられる。樹脂成形における加工性の観点から、たとえばポリサルフォン、ポリエーテルエーテルケトン、PPSを材料とすることが好ましい。 (Mesh part 1)
A large number of fine through holes are formed in themesh portion 1. Although details will be described later, the mesh portion 1 (see FIGS. 1 and 3 to 5) is disposed so as to face the surface 42 of the tip portion 41 of the horn vibrator 40 and to contact the surface 42. The mesh part 1 is made of a resin and is a molded product using a mold. Examples of the resin material forming the mesh portion 1 include polyamide resin, polyester, syndiopolystyrene, polysulfone, polyethersulfone, polyetheretherketone, polyetherimide, polyamideimide, PPS (polyphenylene sulfide), epoxy, and phenol. And polyimide. From the viewpoint of processability in resin molding, it is preferable to use, for example, polysulfone, polyetheretherketone, or PPS.
メッシュ部1には、多数の微細な貫通孔が形成されている。詳細は後述されるが、メッシュ部1(図1,図3~図5参照)は、ホーン振動子40の先端部41の表面42に対向し、表面42に当接するように配置される。メッシュ部1は、樹脂製であり、金型を使用した金型成形品である。メッシュ部1を形成する樹脂材料としては、たとえばポリアミド系樹脂、ポリエステル、シンジオ型ポリスチレン、ポリサルフォン、ポリエーテルサルフォン、ポリエーテルエーテルケトン、ポリエーテルイミド、ポリアミドイミド、PPS(polyphenylene sulfide)、エポキシ、フェノール、ポリイミドなどが挙げられる。樹脂成形における加工性の観点から、たとえばポリサルフォン、ポリエーテルエーテルケトン、PPSを材料とすることが好ましい。 (Mesh part 1)
A large number of fine through holes are formed in the
メッシュ部1は、金属製であってもよい。たとえばメッシュ部1は、所定の比率で合金されたNi-Pd(ニッケル-パラジウム)などのニッケル合金もしくは白金などで形成されてもよい。または、メッシュ部1はセラミックス製であってもよい。たとえばメッシュ部1は、アルミナ、ジルコニアもしくは炭化ケイ素などで形成されてもよい。
The mesh part 1 may be made of metal. For example, the mesh portion 1 may be formed of nickel alloy such as Ni—Pd (nickel-palladium) alloyed with a predetermined ratio, platinum, or the like. Alternatively, the mesh part 1 may be made of ceramics. For example, the mesh part 1 may be formed of alumina, zirconia, silicon carbide, or the like.
本実施の形態のメッシュ部1は、独立した一つの部材として形成されているが、この構成に限られるものではない。たとえば後述する支持部材50または支持部材52とメッシュ部1とが一体に成形されるなど、メッシュ部1は任意の部材の薄板状の一部分であってもよい。
The mesh portion 1 of the present embodiment is formed as an independent member, but is not limited to this configuration. For example, the mesh part 1 may be a thin plate-like part of an arbitrary member, for example, the support member 50 or the support member 52 described later and the mesh part 1 are integrally formed.
(ボトル部31)
図5~図8を参照して、ボトル部31の底面は、傾斜するように形成される。ボトル部31の内部には、薬液などの液体L(図7参照)が貯留される。 (Bottle part 31)
5 to 8, the bottom surface ofbottle portion 31 is formed to be inclined. A liquid L such as a chemical solution (see FIG. 7) is stored inside the bottle portion 31.
図5~図8を参照して、ボトル部31の底面は、傾斜するように形成される。ボトル部31の内部には、薬液などの液体L(図7参照)が貯留される。 (Bottle part 31)
5 to 8, the bottom surface of
ボトル部31には、ホーン振動子40とは反対側に位置する注液口33と、ホーン振動子40に近づくにつれ徐々に細くなる先端開口32とが設けられる。注液口33を閉塞するように、キャップ35が取り付けられる。キャップ35は、支持部35Tによって矢印AR35方向(図2参照)に回動可能に支持される。
The bottle portion 31 is provided with a liquid injection port 33 located on the opposite side of the horn vibrator 40 and a tip opening 32 that gradually becomes narrower as the horn vibrator 40 is approached. A cap 35 is attached so as to close the liquid injection port 33. The cap 35 is supported by the support portion 35T so as to be rotatable in the direction of the arrow AR35 (see FIG. 2).
キャップ35がボトル部31に取り付けられることによって、ボトル部31の注液口33は閉塞される。キャップ35が注液口33を閉塞した状態は、キャップ35の上部に設けられた固定部35Kによって保持される。
When the cap 35 is attached to the bottle portion 31, the liquid injection port 33 of the bottle portion 31 is closed. The state in which the cap 35 closes the liquid injection port 33 is held by a fixing portion 35 </ b> K provided on the top of the cap 35.
ボトル部31の先端開口32は、ホーン振動子40の先端部41に対向している。詳細は後述されるが、ボトル部31内に貯留された液体Lは、ホーン振動子40の先端部41の外側から、先端部41の表面42に供給される。
The front end opening 32 of the bottle portion 31 faces the front end portion 41 of the horn vibrator 40. Although details will be described later, the liquid L stored in the bottle portion 31 is supplied to the surface 42 of the tip portion 41 from the outside of the tip portion 41 of the horn vibrator 40.
ボトル部31は、大容量部分Bと、この大容量部分Bに先端開口32を通じて連通し、ホーン振動子40の先端部41に対向する小容量部分bとを有する。小容量部分bは、霧化された薬液を噴霧するボトルユニット30の開口部60の内壁62(図6参照)とホーン振動子40の先端部41との間において、環状の空間S(図5参照)を形成する。
The bottle portion 31 has a large-capacity portion B and a small-capacity portion b that communicates with the large-capacity portion B through the tip opening 32 and faces the tip portion 41 of the horn vibrator 40. The small capacity portion b is an annular space S (see FIG. 5) between the inner wall 62 (see FIG. 6) of the opening 60 of the bottle unit 30 that sprays the atomized chemical liquid and the tip 41 of the horn vibrator 40. Reference).
(ホーン振動子40)
図5および図6を参照して、上述のとおり、ホーン振動子40は、ボトル部31の先端開口32に対向するように配置される。ホーン振動子40は、ボトルユニット30に設けられた開口部60の下側に位置する。ホーン振動子40の上側において、開口部60に対して後述する内側メッシュキャップ57が着脱可能に取り付けられる。 (Horn vibrator 40)
With reference to FIG. 5 and FIG. 6, as described above, thehorn vibrator 40 is disposed so as to face the tip opening 32 of the bottle portion 31. The horn vibrator 40 is located below the opening 60 provided in the bottle unit 30. On the upper side of the horn vibrator 40, an inner mesh cap 57 to be described later is detachably attached to the opening 60.
図5および図6を参照して、上述のとおり、ホーン振動子40は、ボトル部31の先端開口32に対向するように配置される。ホーン振動子40は、ボトルユニット30に設けられた開口部60の下側に位置する。ホーン振動子40の上側において、開口部60に対して後述する内側メッシュキャップ57が着脱可能に取り付けられる。 (Horn vibrator 40)
With reference to FIG. 5 and FIG. 6, as described above, the
(支持部材50・支持部材52)
図7および図8(ならびに図3~図5)を参照して、支持部材50および支持部材52は、メッシュ部1を支持部材50および支持部材52の間に挟んだ状態で、互いに嵌合可能に構成される。メッシュ部1は、ホーン振動子40の先端部41上において、互いに嵌合する支持部材50および支持部材52によって挟持される。支持部材50および支持部材52は、メッシュ部1を挟持しつつ、メッシュ部1がホーン振動子40の表面42に対して近接対向するようにメッシュ部1を固定する。 (Support member 50 / support member 52)
Referring to FIGS. 7 and 8 (and FIGS. 3 to 5),support member 50 and support member 52 can be fitted to each other in a state where mesh portion 1 is sandwiched between support member 50 and support member 52. Configured. The mesh portion 1 is sandwiched between the support member 50 and the support member 52 that are fitted to each other on the tip portion 41 of the horn vibrator 40. The support member 50 and the support member 52 fix the mesh portion 1 so that the mesh portion 1 is in close proximity to the surface 42 of the horn vibrator 40 while sandwiching the mesh portion 1.
図7および図8(ならびに図3~図5)を参照して、支持部材50および支持部材52は、メッシュ部1を支持部材50および支持部材52の間に挟んだ状態で、互いに嵌合可能に構成される。メッシュ部1は、ホーン振動子40の先端部41上において、互いに嵌合する支持部材50および支持部材52によって挟持される。支持部材50および支持部材52は、メッシュ部1を挟持しつつ、メッシュ部1がホーン振動子40の表面42に対して近接対向するようにメッシュ部1を固定する。 (
Referring to FIGS. 7 and 8 (and FIGS. 3 to 5),
(密閉支持パッキン51・内側メッシュキャップ57)
互いに嵌合する支持部材50および支持部材52は、環状に形成される密閉支持パッキン51の内周部に取り付けられる。互いに嵌合する支持部材50および支持部材52は、密閉支持パッキン51によって、内側メッシュキャップ57に取り付けられる。密閉支持パッキン51の外周部が、内側メッシュキャップ57に嵌合する。密閉支持パッキン51によって、支持部材50,52と内側メッシュキャップ57との間の空隙が密閉される。 (Sealing support packing 51, inner mesh cap 57)
Thesupport member 50 and the support member 52 that are fitted to each other are attached to the inner peripheral portion of the hermetic support packing 51 formed in an annular shape. The support member 50 and the support member 52 that are fitted to each other are attached to the inner mesh cap 57 by the hermetic support packing 51. The outer peripheral portion of the hermetic support packing 51 is fitted into the inner mesh cap 57. The space between the support members 50 and 52 and the inner mesh cap 57 is sealed by the hermetic support packing 51.
互いに嵌合する支持部材50および支持部材52は、環状に形成される密閉支持パッキン51の内周部に取り付けられる。互いに嵌合する支持部材50および支持部材52は、密閉支持パッキン51によって、内側メッシュキャップ57に取り付けられる。密閉支持パッキン51の外周部が、内側メッシュキャップ57に嵌合する。密閉支持パッキン51によって、支持部材50,52と内側メッシュキャップ57との間の空隙が密閉される。 (Sealing support packing 51, inner mesh cap 57)
The
内側メッシュキャップ57は、ボトルユニット30に設けられた開口部60を覆うように、開口部60の周りに取り付けられる。内側メッシュキャップ57は、内側メッシュキャップ57の支持部57Tが、ボトル部31側に設けられた支持部38Tによって回動可能に軸支される。
The inner mesh cap 57 is attached around the opening 60 so as to cover the opening 60 provided in the bottle unit 30. The inner mesh cap 57 is pivotally supported by the support portion 38T provided on the bottle portion 31 side so that the support portion 57T of the inner mesh cap 57 is rotatable.
内側メッシュキャップ57が開口部60の周りに取り付けられた状態においては、密閉支持パッキン51によって、内側メッシュキャップ57と開口部60との間に形成される空隙が密閉される。当該密閉によって、ボトル部31内に貯留された液体Lおよび液体LLは、ボトル部31から外部に漏れないように保たれる。これにより、液体噴霧装置100を傾けた場合であっても、ボトル部31の内部の液体Lおよび液体LLが外部に漏れることはない。
In the state where the inner mesh cap 57 is attached around the opening 60, the air gap formed between the inner mesh cap 57 and the opening 60 is sealed by the sealing support packing 51. By the sealing, the liquid L and the liquid LL stored in the bottle part 31 are kept from leaking from the bottle part 31 to the outside. Thereby, even if it is a case where the liquid spraying apparatus 100 is inclined, the liquid L and the liquid LL inside the bottle part 31 do not leak outside.
上述のとおり、内側メッシュキャップ57の支持部57Tが、ボトル部31側に設けられた支持部38Tによって回動可能に軸支される。当該構成によって、内側メッシュキャップ57は、内側メッシュキャップ57の内側にメッシュ部1、支持部材50,52、および密閉支持パッキン51を一体的に取り付けた状態で、開口部60に対して着脱自在に取り付けられる。
As described above, the support portion 57T of the inner mesh cap 57 is pivotally supported by the support portion 38T provided on the bottle portion 31 side. With this configuration, the inner mesh cap 57 is detachable from the opening 60 in a state where the mesh portion 1, the support members 50 and 52, and the hermetic support packing 51 are integrally attached to the inner mesh cap 57. It is attached.
内側メッシュキャップ57にメッシュ部1が取り付けられているため、内側メッシュキャップ57を開口部60に対して取り外す(内側メッシュキャップ57を回動させる)ことで、メッシュ部1を容易に洗浄することが可能となっている。
Since the mesh part 1 is attached to the inner mesh cap 57, the mesh part 1 can be easily washed by removing the inner mesh cap 57 from the opening 60 (rotating the inner mesh cap 57). It is possible.
(液体噴霧装置100の動作)
ボトルユニット30を本体部20(図1参照)に取り付けた液体噴霧装置100を机上などに置いた状態では、図7のようにボトルユニット30は水平になり、ボトル部31内の液体Lはボトル部31の底部に溜まっている。 (Operation of Liquid Spraying Device 100)
In a state where theliquid spraying apparatus 100 with the bottle unit 30 attached to the main body 20 (see FIG. 1) is placed on a desk or the like, the bottle unit 30 is horizontal as shown in FIG. Collected at the bottom of the portion 31.
ボトルユニット30を本体部20(図1参照)に取り付けた液体噴霧装置100を机上などに置いた状態では、図7のようにボトルユニット30は水平になり、ボトル部31内の液体Lはボトル部31の底部に溜まっている。 (Operation of Liquid Spraying Device 100)
In a state where the
図9は、ボトルユニット30の噴霧時の状態を示す断面図である。液体噴霧装置100を手で持ってホーン振動子40側に傾けると、図9のようにボトルユニット30が傾き、ボトル部31の大容量部分Bの液体Lが先端開口32から小容量部分bの空間S内に流入する。空間S内の液体LLは、ホーン振動子40の先端部41の外側から、先端部41の表面42とメッシュ部1との接触部近傍に到達する。
FIG. 9 is a cross-sectional view showing a state when the bottle unit 30 is sprayed. When the liquid sprayer 100 is held by hand and tilted toward the horn vibrator 40 side, the bottle unit 30 is tilted as shown in FIG. 9, and the liquid L in the large-capacity portion B of the bottle portion 31 flows from the tip opening 32 into the small-capacity portion b. It flows into the space S. The liquid LL in the space S reaches the vicinity of the contact portion between the surface 42 of the tip portion 41 and the mesh portion 1 from the outside of the tip portion 41 of the horn vibrator 40.
この状態で、本体部20の電源スイッチ21(図1参照)を押せば、ホーン振動子40が超音波振動し、メッシュ部1とホーン振動子40の先端部41の表面42との超音波振動により、液体LLがメッシュ部1の微細孔を通して噴出され、開口部60(図3~図5参照)から霧状の液体LLが噴霧される。この噴霧中において、本実施の形態における液体噴霧装置100では、メッシュ部1に形成された多数の貫通孔のうち、一部の貫通孔は第一の断面形状を有し、他の貫通孔は第一の断面形状と異なる第二の断面形状を有し、メッシュ部1には互いに断面形状の異なる複数の貫通孔が形成されているため、粒子径の異なる液体LLの液滴が同時に発生する。
In this state, when the power switch 21 (see FIG. 1) of the main body 20 is pressed, the horn vibrator 40 vibrates ultrasonically, and ultrasonic vibration between the mesh portion 1 and the surface 42 of the tip 41 of the horn vibrator 40 occurs. As a result, the liquid LL is ejected through the fine holes of the mesh portion 1, and the mist-like liquid LL is sprayed from the opening 60 (see FIGS. 3 to 5). During the spraying, in the liquid spraying apparatus 100 according to the present embodiment, some of the through holes formed in the mesh portion 1 have the first cross-sectional shape, and the other through holes are Since the plurality of through-holes having a second cross-sectional shape different from the first cross-sectional shape and different cross-sectional shapes are formed in the mesh portion 1, liquid droplets of liquid LL having different particle diameters are generated simultaneously. .
ボトル部31の大容量部分Bの液体Lが微少量になっても(図9参照)、小容量部分bの液体LLは、上記したようにホーン振動子40の先端部41と内壁62(図6参照)との表面張力により、霧化部近傍まで上昇し、さらにホーン振動子40の振動によりメッシュ部1まで供給されることができる。
Even if the liquid L in the large-capacity portion B of the bottle portion 31 becomes a very small amount (see FIG. 9), the liquid LL in the small-capacity portion b is, as described above, the tip portion 41 and the inner wall 62 (see FIG. 6), the surface tension rises to the vicinity of the atomizing portion, and can be further supplied to the mesh portion 1 by the vibration of the horn vibrator 40.
(メッシュ部1の詳細)
以下、本実施の形態における液体噴霧装置100(図1参照)に用いられるメッシュ部1について詳細に説明する。図10は、実施の形態1のメッシュ部1の構成の概略を示す斜視図である。図11は、図10中のXI-XI線に沿うメッシュ部1の部分断面図である。本実施の形態1のメッシュ部1は、薄板状の外形を有しており、平面形状が円形状である。円板形状のメッシュ部1は、円の中心付近の中央部2と、円の外周付近の周縁部3とを有する。メッシュ部1には、複数のノズル状の貫通孔6が形成されている。貫通孔6を通過する液体LLが貫通孔6へ流入する側のメッシュ部1の表面を入口面1B(図11参照)とし、液体LLが貫通孔6から流出する側のメッシュ部1の表面を出口面1A(図11参照)とすると、貫通孔6は、メッシュ部1の入口面1Bから出口面1Aに至るまで、メッシュ部1を厚み方向に貫通して形成されている。 (Details of mesh part 1)
Hereinafter, themesh part 1 used for the liquid spraying apparatus 100 (refer FIG. 1) in this Embodiment is demonstrated in detail. FIG. 10 is a perspective view illustrating the outline of the configuration of the mesh unit 1 according to the first embodiment. FIG. 11 is a partial cross-sectional view of the mesh portion 1 along the line XI-XI in FIG. The mesh part 1 of the first embodiment has a thin plate-like outer shape, and the planar shape is a circular shape. The disc-shaped mesh portion 1 has a central portion 2 near the center of the circle and a peripheral portion 3 near the outer periphery of the circle. A plurality of nozzle-like through holes 6 are formed in the mesh portion 1. The surface of the mesh portion 1 on the side where the liquid LL passing through the through-hole 6 flows into the through-hole 6 is defined as the inlet surface 1B (see FIG. 11), and the surface of the mesh portion 1 on the side where the liquid LL flows out of the through-hole 6 If it is set as the exit surface 1A (refer FIG. 11), the through-hole 6 penetrates the mesh part 1 in the thickness direction from the entrance surface 1B of the mesh part 1 to the exit surface 1A, and is formed.
以下、本実施の形態における液体噴霧装置100(図1参照)に用いられるメッシュ部1について詳細に説明する。図10は、実施の形態1のメッシュ部1の構成の概略を示す斜視図である。図11は、図10中のXI-XI線に沿うメッシュ部1の部分断面図である。本実施の形態1のメッシュ部1は、薄板状の外形を有しており、平面形状が円形状である。円板形状のメッシュ部1は、円の中心付近の中央部2と、円の外周付近の周縁部3とを有する。メッシュ部1には、複数のノズル状の貫通孔6が形成されている。貫通孔6を通過する液体LLが貫通孔6へ流入する側のメッシュ部1の表面を入口面1B(図11参照)とし、液体LLが貫通孔6から流出する側のメッシュ部1の表面を出口面1A(図11参照)とすると、貫通孔6は、メッシュ部1の入口面1Bから出口面1Aに至るまで、メッシュ部1を厚み方向に貫通して形成されている。 (Details of mesh part 1)
Hereinafter, the
なお、図10および後述する図14では、メッシュ部1の中央部2と周縁部3の一部とに形成された一部の貫通孔6が、代表的に図示されている。つまり、これらの図において貫通孔6が図示されていないメッシュ部1の部位においても、貫通孔6(大面積孔6Aまたは小面積孔6B)が形成されており、貫通孔6はメッシュ部1の全体に亘って形成されている。典型的には、一枚のメッシュ部1には、数千個の貫通孔6が形成されている。また、以下の図面では、理解を容易にするために、実際のメッシュ部1に形成される貫通孔6よりも、メッシュ部1に対し貫通孔6の断面形状を大きく誇張して図示していることに留意されたい。
In addition, in FIG. 10 and FIG. 14 to be described later, a part of the through holes 6 formed in the central part 2 and part of the peripheral part 3 of the mesh part 1 are representatively illustrated. That is, in these drawings, the through hole 6 (large area hole 6A or small area hole 6B) is also formed in the portion of the mesh part 1 where the through hole 6 is not shown. It is formed throughout. Typically, several thousands of through holes 6 are formed in one mesh part 1. In the following drawings, the cross-sectional shape of the through-hole 6 is greatly exaggerated with respect to the mesh portion 1 rather than the through-hole 6 formed in the actual mesh portion 1 for easy understanding. Please note that.
複数の貫通孔6は、相対的に断面積の大きい大面積孔6Aと、相対的に断面積の小さい小面積孔6Bと、を含む。メッシュ部1には意図的に、互いに断面形状の異なる複数の貫通孔6が形成されている。メッシュ部1の一定範囲毎に異なる断面形状の貫通孔6が形成されており、メッシュ部1の径方向に沿って貫通孔6の断面形状が異なっている。ここでいう貫通孔6の断面形状とは、貫通孔6の中心に沿ってメッシュ部1を厚み方向に切断した断面に現れる当該貫通孔6の形状を意味し、貫通孔6の断面積とは、貫通孔6の中心に沿ってメッシュ部1を厚み方向に切断した断面に現れる当該貫通孔6の断面の面積を意味する。
The plurality of through holes 6 include a large area hole 6A having a relatively large cross-sectional area and a small area hole 6B having a relatively small cross-sectional area. The mesh part 1 is intentionally formed with a plurality of through holes 6 having different cross-sectional shapes. Through holes 6 having different cross-sectional shapes are formed for each predetermined range of the mesh portion 1, and the cross-sectional shapes of the through holes 6 are different along the radial direction of the mesh portion 1. The cross-sectional shape of the through-hole 6 here means the shape of the through-hole 6 that appears in a cross-section obtained by cutting the mesh portion 1 in the thickness direction along the center of the through-hole 6. It means the area of the cross section of the through hole 6 that appears in the cross section of the mesh portion 1 cut in the thickness direction along the center of the through hole 6.
図10および図11に示す例では、メッシュ部1の中央部2に大面積孔6Aが形成され、メッシュ部1の周縁部3に小面積孔6Bが形成されている。メッシュ部1の周縁部3から中央部2に向けて貫通孔6の断面形状が変化し、メッシュ部1の周縁部3から中央部2に向けて段階的に貫通孔6の断面積が大きくなるように、貫通孔6は形成されている。
10 and 11, a large area hole 6A is formed in the central part 2 of the mesh part 1, and a small area hole 6B is formed in the peripheral part 3 of the mesh part 1. The cross-sectional shape of the through-hole 6 changes from the peripheral part 3 of the mesh part 1 toward the central part 2, and the cross-sectional area of the through-hole 6 gradually increases from the peripheral part 3 of the mesh part 1 to the central part 2. Thus, the through hole 6 is formed.
図11に示す断面は、大面積孔6Aの中心と小面積孔6Bの中心とを通る面であって、図11に示すように、この断面に現れる大面積孔6Aの断面積は小面積孔6Bの断面積よりも大きい。一方、出口面1Aに開口する大面積孔6Aの径D1と、出口面1Aに開口する小面積孔6Bの径D2との径は等しい。すなわち、径D1,D2には、D1=D2の関係が成立する。大面積孔6Aと小面積孔6Bとは、出口面1Aに開口する開口の径が等しいものの、断面形状が異なるために断面積が異なり、その結果、大面積孔6Aの断面積は小面積孔6Bの断面積よりも大きくなっている。
The cross section shown in FIG. 11 is a plane that passes through the center of the large area hole 6A and the center of the small area hole 6B. As shown in FIG. 11, the cross sectional area of the large area hole 6A that appears in this cross section is the small area hole. It is larger than the cross-sectional area of 6B. On the other hand, the diameter D1 of the large area hole 6A opening in the exit surface 1A and the diameter D2 of the small area hole 6B opening in the exit surface 1A are equal. That is, a relationship of D1 = D2 is established between the diameters D1 and D2. The large-area hole 6A and the small-area hole 6B have the same opening diameter on the outlet surface 1A, but have different cross-sectional areas due to different cross-sectional shapes. As a result, the large-area hole 6A has a small cross-sectional area. It is larger than the cross-sectional area of 6B.
図10に示す一例のメッシュ部1では、中央部2は大面積孔6Aが形成される範囲を示し、周縁部3は小面積孔6Bが形成される範囲を示す。中央部2と周縁部3との境界は、メッシュ部1の径方向の任意の位置において、所望の径を有する液体LLの噴霧粒子を必要な量発生できるように、最適に設定される。
In the example mesh portion 1 shown in FIG. 10, the central portion 2 indicates a range where the large area hole 6A is formed, and the peripheral edge portion 3 indicates a range where the small area hole 6B is formed. The boundary between the central portion 2 and the peripheral portion 3 is optimally set so that a necessary amount of spray particles of the liquid LL having a desired diameter can be generated at an arbitrary position in the radial direction of the mesh portion 1.
図11に示す本実施の形態の貫通孔6は、漏斗状の形状に形成されている。貫通孔6は、入口面1Bにおいて最大の径を有し、出口面1Aに向かって径が漸次縮小し、出口面1Aの近傍では直管状となり、出口面1Aに開口する。大面積孔6Aと小面積孔6Bとは、出口面1A近傍の直管状部分がメッシュ部1の厚み方向において延びる長さにおいて相違する。小面積孔6Bの直管状部分は、メッシュ部1の厚み方向の長さが相対的に長く、大面積孔6Aの直管状部分は、メッシュ部1の厚み方向の長さが相対的に短い。大面積孔6Aと小面積孔6Bとは、直管状部分よりも入口面1B側において、同一の曲率で湾曲する曲面形状の内壁面を有している。入口面1Bに開口する大面積孔6Aの開口径が入口面1Bに開口する小面積孔6Bの開口径よりも大きくなり、その結果、大面積孔6Aの面積は小面積孔6Bの面積よりも大きくなっている。
The through-hole 6 of the present embodiment shown in FIG. 11 is formed in a funnel shape. The through-hole 6 has a maximum diameter on the entrance surface 1B, and the diameter gradually decreases toward the exit surface 1A. The through-hole 6 becomes a straight tube in the vicinity of the exit surface 1A and opens to the exit surface 1A. The large area hole 6A and the small area hole 6B differ in the length in which the straight tubular portion in the vicinity of the exit surface 1A extends in the thickness direction of the mesh portion 1. The straight tubular portion of the small area hole 6B has a relatively long length in the thickness direction of the mesh portion 1, and the straight tubular portion of the large area hole 6A has a relatively short length in the thickness direction of the mesh portion 1. The large area hole 6A and the small area hole 6B have curved inner wall surfaces that are curved with the same curvature on the inlet surface 1B side of the straight tubular portion. The opening diameter of the large area hole 6A opening to the entrance surface 1B is larger than the opening diameter of the small area hole 6B opening to the entrance surface 1B. As a result, the area of the large area hole 6A is larger than the area of the small area hole 6B. It is getting bigger.
貫通孔6は、図11に示す形状に限られず、任意の形状に形成することが可能である。たとえば、貫通孔6の形状は、円錐状または角錐状であってもよく、中折れした円錐状または角錐状であってもよく、円柱と円錐との組み合わせ形状であってもよく、角柱と角錐との組み合わせ形状であってもよい。たとえば、大面積孔6Aと小面積孔6Bとを円錐状に形成し、出口面1Aにおける大面積孔6Aの径D1と小面積孔6Bの径D2とを等しくするとともに、大面積孔6Aのテーパ角度を小面積孔6Bのテーパ角度よりも大きくすることで、大面積孔6Aの断面積を小面積孔6Bの断面積よりも大きくしてもよい。
The through hole 6 is not limited to the shape shown in FIG. 11, and can be formed in an arbitrary shape. For example, the shape of the through hole 6 may be a cone or a pyramid, may be a folded cone or a pyramid, may be a combination of a cylinder and a cone, a prism and a pyramid. The combination shape may be sufficient. For example, the large area hole 6A and the small area hole 6B are formed in a conical shape, the diameter D1 of the large area hole 6A and the diameter D2 of the small area hole 6B on the exit surface 1A are made equal, and the taper of the large area hole 6A. By making the angle larger than the taper angle of the small area hole 6B, the sectional area of the large area hole 6A may be larger than the sectional area of the small area hole 6B.
図12は、メッシュ部1の貫通孔6を通過させて液体LLを霧化し噴出する動作を示す断面模式図である。ホーン振動子40は、図12中の上下方向に超音波振動する。ホーン振動子40は、メッシュ部1に形成された貫通孔6の内部に液体LLを供給するための給液部としての機能を有する。以下の説明において、噴霧粒子の径が具体的な数値として示されるが、この数値は、液体噴霧装置100で発生する噴霧粒子の分布におけるピーク値を示すものである。つまり、実際に液体噴霧装置100から発生する噴霧粒子の粒子径は分布しており、以下に示す直径の噴霧粒子が最も多く発生するものの、具体的に示された粒子径を有する噴霧粒子のみが液体噴霧装置100から発生するのではないことに留意されたい。
FIG. 12 is a schematic cross-sectional view showing the operation of atomizing and ejecting the liquid LL through the through-hole 6 of the mesh portion 1. The horn vibrator 40 vibrates ultrasonically in the vertical direction in FIG. The horn vibrator 40 has a function as a liquid supply part for supplying the liquid LL to the inside of the through hole 6 formed in the mesh part 1. In the following description, the diameter of the spray particles is shown as a specific numerical value, and this numerical value indicates a peak value in the distribution of the spray particles generated in the liquid spray device 100. That is, the particle diameters of the spray particles actually generated from the liquid spray device 100 are distributed, and the spray particles having the diameters shown below are generated most frequently, but only the spray particles having the specifically shown particle diameters are present. Note that it does not originate from the liquid spray device 100.
図12中に白抜き矢印で示す、ホーン振動子40がメッシュ部1に近接する方向に移動するとき、メッシュ部1とホーン振動子40の先端部41の表面との間に供給された液体LLが貫通孔6から押し出され、微細な霧状の液体の粒子が発生する。大面積孔6Aから噴出する液体粒子LP1は、大面積孔6Aの径D1(図11参照)よりも大きい直径を有する。小面積孔6Bから噴出する液体粒子LP2は、小面積孔6Bの径D2(図11参照)よりも大きい直径を有する。たとえば、出口面1Aにおける開口の直径が3μmの貫通孔6から噴出される噴霧粒子は、5μmの直径を有する。なお、このような貫通孔6の径と噴霧粒子の直径との関係は一例であり、異なる条件下においては噴霧粒子が貫通孔6の径よりも小さい直径を有する場合もある。
The liquid LL supplied between the mesh unit 1 and the surface of the tip portion 41 of the horn transducer 40 when the horn transducer 40 moves in the direction approaching the mesh unit 1 as indicated by the white arrow in FIG. Is extruded from the through-hole 6 and fine mist-like liquid particles are generated. The liquid particles LP1 ejected from the large area hole 6A have a diameter larger than the diameter D1 (see FIG. 11) of the large area hole 6A. The liquid particles LP2 ejected from the small area hole 6B have a diameter larger than the diameter D2 (see FIG. 11) of the small area hole 6B. For example, the spray particles ejected from the through hole 6 having an opening diameter of 3 μm on the exit surface 1A have a diameter of 5 μm. Note that the relationship between the diameter of the through hole 6 and the diameter of the spray particles is an example, and the spray particles may have a diameter smaller than the diameter of the through hole 6 under different conditions.
大面積孔6Aの容積が小面積孔6Bよりも大きいので、大面積孔6Aの内部には、小面積孔6Bと比較して、より多くの量の液体LLが貯留され得る。ホーン振動子40の振動に伴って大面積孔6Aから押し出され噴出する液体LLの量は、小面積孔6Bから押し出され噴出する液体LLの量と比較して、より多くなる。そのため、大面積孔6Aから噴出する液体粒子LP1の直径は、小面積孔6Bから噴出する液体粒子LP2の直径よりも大きくなる。
Since the volume of the large area hole 6A is larger than that of the small area hole 6B, a larger amount of liquid LL can be stored in the large area hole 6A than in the small area hole 6B. As the horn vibrator 40 vibrates, the amount of the liquid LL pushed out and ejected from the large area hole 6A is larger than the amount of the liquid LL pushed out and ejected from the small area hole 6B. Therefore, the diameter of the liquid particle LP1 ejected from the large area hole 6A is larger than the diameter of the liquid particle LP2 ejected from the small area hole 6B.
多様な断面積の貫通孔6が形成されているメッシュ部1では、発生する粒子径の分布幅が広がっており、霧化粒子径の異なる噴霧粒子、すなわち液体粒子LP1,LP2を同時に発生することができる。一枚のメッシュ部1から異なる粒子径の液体の噴霧粒子を発生させることができるので、このメッシュ部1を使用した液体噴霧装置100では、患者の体内の異なった部位に同時に薬液を到達させることが可能になる。
In the mesh part 1 in which the through-holes 6 having various cross-sectional areas are formed, the distribution range of the generated particle diameters is widened, and spray particles having different atomized particle diameters, that is, liquid particles LP1 and LP2 are generated simultaneously. Can do. Since spray particles of liquids having different particle diameters can be generated from a single mesh portion 1, the liquid spray device 100 using the mesh portion 1 allows the drug solution to reach different parts of the patient's body at the same time. Is possible.
たとえば、鼻または咽喉に薬液を沈着させるためには10μm以上の粒子径が必要であり、上気道に薬液を沈着させるためには5~10μmの粒子径が必要であり、気管支に薬液を沈着させるためには3~5μmの粒子径が必要であり、肺胞に薬液を沈着させるためには1μm以下の粒子径が必要である。治療すべき患部に薬液が沈着し易いように、貫通孔6の断面形状を任意に調整することで、患部の治療に適した粒子径の薬液ミストを発生させることができる。たとえば、大面積孔6Aから噴出される液体粒子LP1の直径が10μmであり、小面積孔6Bから噴出される液体粒子LP2の直径が3μmであるように、貫通孔6の断面形状を調整してもよい。またたとえば、液体粒子LP1の直径を5μmとし、液体粒子LP2の直径を3μmとするように、貫通孔6の断面形状を調整してもよい。
For example, a particle size of 10 μm or more is required to deposit a drug solution on the nose or throat, and a particle size of 5 to 10 μm is required to deposit a drug solution on the upper respiratory tract, and the drug solution is deposited on the bronchus. For this purpose, a particle size of 3 to 5 μm is required, and in order to deposit a drug solution in the alveoli, a particle size of 1 μm or less is required. By adjusting the cross-sectional shape of the through-hole 6 arbitrarily so that the chemical solution is easily deposited on the affected area to be treated, a chemical solution mist having a particle diameter suitable for the treatment of the affected area can be generated. For example, the cross-sectional shape of the through hole 6 is adjusted so that the diameter of the liquid particle LP1 ejected from the large area hole 6A is 10 μm and the diameter of the liquid particle LP2 ejected from the small area hole 6B is 3 μm. Also good. For example, the cross-sectional shape of the through hole 6 may be adjusted so that the diameter of the liquid particle LP1 is 5 μm and the diameter of the liquid particle LP2 is 3 μm.
液体粒子LP1,LP2の径を最適に管理するためには、大面積孔6Aおよび小面積孔6Bの断面形状を高精度に管理してメッシュ部1を作製する必要がある。本実施の形態のメッシュ部1は、樹脂材料を原料として金型成形により製造されるので、貫通孔6の形状を高精度に管理することが可能である。
In order to optimally manage the diameters of the liquid particles LP1 and LP2, it is necessary to manufacture the mesh portion 1 by managing the cross-sectional shapes of the large area hole 6A and the small area hole 6B with high accuracy. Since the mesh part 1 of this Embodiment is manufactured by metal mold | die shaping | molding using a resin material as a raw material, it is possible to manage the shape of the through-hole 6 with high precision.
樹脂製のメッシュ部1は、高精度に製造された金型を使用した成形品として作製することができるので、貫通孔6の断面形状を自在に調整することができる。したがって、適切な形状および寸法の金型を準備することで、任意の断面形状の大面積孔6Aおよび小面積孔6Bの形成された本実施の形態のメッシュ部1を容易に製造することが可能である。
Since the resin mesh portion 1 can be manufactured as a molded product using a mold manufactured with high accuracy, the cross-sectional shape of the through-hole 6 can be freely adjusted. Therefore, by preparing a mold having an appropriate shape and size, it is possible to easily manufacture the mesh portion 1 of the present embodiment in which the large area hole 6A and the small area hole 6B having an arbitrary cross-sectional shape are formed. It is.
図13は、変形例のメッシュ部1の構成の概略を示す部分断面図である。図13に示す変形例では、メッシュ部1の中央部2に小面積孔6Bが形成され、メッシュ部1の周縁部3に大面積孔6Aが形成されている点で、図10に示す例と異なっている。メッシュ部1に形成される大面積孔6Aと小面積孔6Bとの配置は任意であり、図10に示す配置としても、図13に示す中央部2に小面積孔6Bを形成し周縁部3に大面積孔6Aを形成する配置とし、メッシュ部1の中央部2から周縁部3に向けて段階的に貫通孔6の断面積を大きくする構成としてもよい。図10,13のいずれの場合でも、一枚のメッシュ部1から霧化粒子径の異なる噴霧粒子を同時に発生できるという上述した効果を、同様に得ることができる。
FIG. 13 is a partial cross-sectional view showing an outline of the configuration of the mesh portion 1 of the modification. In the modification shown in FIG. 13, the small area hole 6 </ b> B is formed in the central part 2 of the mesh part 1, and the large area hole 6 </ b> A is formed in the peripheral part 3 of the mesh part 1. Is different. Arrangement of the large area hole 6A and the small area hole 6B formed in the mesh part 1 is arbitrary. Even in the arrangement shown in FIG. 10, the small area hole 6B is formed in the central part 2 shown in FIG. It is good also as a structure which makes it the arrangement | positioning which forms 6A of large area holes, and enlarges the cross-sectional area of the through-hole 6 in steps toward the peripheral part 3 from the center part 2 of the mesh part 1. FIG. 10 and 13, the above-described effect that spray particles having different atomized particle diameters can be simultaneously generated from one mesh portion 1 can be obtained in the same manner.
以上説明した実施の形態1では、メッシュ部1に互いに断面形状の異なる大面積孔6Aと小面積孔6Bとが形成されており、メッシュ部1を厚み方向に貫通する貫通孔6が相互に異なる二種類の断面積を有する例について説明した。この例に限られず、貫通孔6は三種類以上の断面積を有してもよい。たとえば、大面積孔6Aと小面積孔6Bとに加えて、大面積孔6Aよりもさらに断面積の大きい貫通孔6、大面積孔6Aと小面積孔6Bとの中間の断面積の貫通孔6、または、小面積孔6Bよりもさらに断面積の小さい貫通孔6が、メッシュ部1に形成されてもよい。貫通孔6が多数の異なる断面形状を有する場合、図10および図13に示すメッシュ部1の径方向に段階的に貫通孔6の断面形状を変化させる構成に替えて、メッシュ部1の中央部2と周縁部3との一方から他方に向けて漸次貫通孔6の断面形状を変化させることも可能である。
In the first embodiment described above, the mesh part 1 is formed with the large area hole 6A and the small area hole 6B having different cross-sectional shapes, and the through holes 6 penetrating the mesh part 1 in the thickness direction are different from each other. An example having two types of cross-sectional areas has been described. It is not restricted to this example, The through-hole 6 may have three or more types of cross-sectional areas. For example, in addition to the large area hole 6A and the small area hole 6B, the through hole 6 having a larger cross sectional area than the large area hole 6A, and the through hole 6 having an intermediate cross sectional area between the large area hole 6A and the small area hole 6B. Alternatively, the through hole 6 having a smaller cross-sectional area than the small area hole 6B may be formed in the mesh portion 1. When the through-hole 6 has many different cross-sectional shapes, it replaces with the structure which changes the cross-sectional shape of the through-hole 6 stepwise in the radial direction of the mesh part 1 shown to FIG. 10 and FIG. It is also possible to gradually change the cross-sectional shape of the through hole 6 from one of the 2 and the peripheral edge 3 toward the other.
[実施の形態2]
図14は、実施の形態2のメッシュ部1の構成の概略を示す斜視図である。図15は、図14中のXV-XV線に沿うメッシュ部1の部分断面図である。図16は、図14中のXVI-XVI線に沿うメッシュ部1の部分断面図である。実施の形態2のメッシュ部1は、メッシュ部1の全体に亘って断面形状の異なる貫通孔6が分散しており、メッシュ部1の全体に亘って大面積孔6Aと小面積孔6Bとが分散して形成されている点で、実施の形態1と異なっている。実施の形態2のメッシュ部1では、図15に示すように、メッシュ部1の中央部2に大面積孔6Aと小面積孔6Bとの両方が形成されており、図16に示すように、メッシュ部1の周縁部3にも大面積孔6Aと小面積孔6Bとの両方が形成されている。 [Embodiment 2]
FIG. 14 is a perspective view illustrating an outline of the configuration of themesh unit 1 according to the second embodiment. FIG. 15 is a partial cross-sectional view of the mesh portion 1 taken along line XV-XV in FIG. FIG. 16 is a partial cross-sectional view of the mesh portion 1 along the line XVI-XVI in FIG. In the mesh portion 1 of the second embodiment, through holes 6 having different cross-sectional shapes are dispersed throughout the mesh portion 1, and the large area hole 6 </ b> A and the small area hole 6 </ b> B are distributed over the entire mesh portion 1. It is different from the first embodiment in that it is formed in a distributed manner. In the mesh part 1 of Embodiment 2, as shown in FIG. 15, both the large area hole 6A and the small area hole 6B are formed in the center part 2 of the mesh part 1, and as shown in FIG. Both the large area hole 6 </ b> A and the small area hole 6 </ b> B are formed in the peripheral edge 3 of the mesh part 1.
図14は、実施の形態2のメッシュ部1の構成の概略を示す斜視図である。図15は、図14中のXV-XV線に沿うメッシュ部1の部分断面図である。図16は、図14中のXVI-XVI線に沿うメッシュ部1の部分断面図である。実施の形態2のメッシュ部1は、メッシュ部1の全体に亘って断面形状の異なる貫通孔6が分散しており、メッシュ部1の全体に亘って大面積孔6Aと小面積孔6Bとが分散して形成されている点で、実施の形態1と異なっている。実施の形態2のメッシュ部1では、図15に示すように、メッシュ部1の中央部2に大面積孔6Aと小面積孔6Bとの両方が形成されており、図16に示すように、メッシュ部1の周縁部3にも大面積孔6Aと小面積孔6Bとの両方が形成されている。 [Embodiment 2]
FIG. 14 is a perspective view illustrating an outline of the configuration of the
実施の形態2のように、メッシュ部1の全体に大面積孔6Aと小面積孔6Bとの両方を形成し、小面積孔6Bに囲まれる大面積孔6Aを形成しても、実施の形態1において説明した霧化粒子径の異なる噴霧粒子を同時に発生できる効果を、同様に得ることができる。大面積孔6Aと小面積孔6Bとの配置は任意であって、たとえば、貫通孔6が過剰に密集して形成され局所的にメッシュ部1の強度が低下することを回避できることを考慮して、任意の位置に大面積孔6Aと小面積孔6Bとを形成してもよい。
Even if both the large area hole 6A and the small area hole 6B are formed in the entire mesh portion 1 and the large area hole 6A surrounded by the small area hole 6B is formed as in the second embodiment, the embodiment The effect that spray particles having different atomized particle diameters described in 1 can be generated at the same time can be obtained similarly. The arrangement of the large-area holes 6A and the small-area holes 6B is arbitrary, for example, considering that the through-holes 6 are formed to be excessively dense and the strength of the mesh portion 1 is locally reduced. The large area hole 6A and the small area hole 6B may be formed at an arbitrary position.
また実施の形態2のメッシュ部1では、メッシュ部1の一定範囲毎に貫通孔6の疎密を変化させており、メッシュ部1の中央部2において貫通孔6が疎に形成され、メッシュ部1の周縁部3において貫通孔6が密に形成されている。液体の噴霧粒子は、上述した通り、ホーン振動子40の超音波振動によって発生する。そのため、噴霧粒子はメッシュ部1の中央部2においてより発生し易く、メッシュ部1の周縁部3では相対的に噴霧粒子が発生しにくいと考えられる。
Moreover, in the mesh part 1 of Embodiment 2, the density of the through-hole 6 is changed for every fixed range of the mesh part 1, the through-hole 6 is formed sparsely in the center part 2 of the mesh part 1, and the mesh part 1 The through-holes 6 are densely formed in the peripheral edge 3. As described above, the liquid spray particles are generated by the ultrasonic vibration of the horn vibrator 40. Therefore, it is considered that the spray particles are more likely to be generated at the central portion 2 of the mesh portion 1 and are relatively less likely to be generated at the peripheral portion 3 of the mesh portion 1.
そこで、メッシュ部1に形成される貫通孔6の密度を意図的に分布させ、典型的には噴霧粒子の発生しやすい中央部2において貫通孔6を相対的に疎に形成し、噴霧粒子の発生しにくい周縁部3において貫通孔6を相対的に密に形成する。これにより、メッシュ部1の全面において、より均一に液体の噴霧粒子を発生させることができる。したがって、液体噴霧装置100を用いて、液体の噴霧粒子をより多量にかつ安定して発生させることが可能になる。中央部2と周縁部3との境界において貫通孔6の密度の分布を変化させる構成のほか、メッシュ部1の中心から外周へ漸次貫通孔6の密度を増加させてもよく、メッシュ部1の中心から外周へ段階的に貫通孔6の密度を増加させてもよい。
Therefore, the density of the through-holes 6 formed in the mesh part 1 is intentionally distributed, and the through-holes 6 are formed relatively sparsely in the central part 2 where the spray particles are likely to be generated. The through-holes 6 are formed relatively densely at the peripheral edge portion 3 that is difficult to generate. Thereby, liquid spray particles can be generated more uniformly on the entire surface of the mesh portion 1. Therefore, it is possible to stably generate a large amount of liquid spray particles using the liquid spray device 100. In addition to the configuration in which the density distribution of the through holes 6 is changed at the boundary between the central portion 2 and the peripheral portion 3, the density of the through holes 6 may be gradually increased from the center of the mesh portion 1 to the outer periphery. The density of the through holes 6 may be increased stepwise from the center to the outer periphery.
以上説明した実施の形態2では、メッシュ部1の径方向に貫通孔6の疎密を異ならせ、メッシュ部1の中央部2から周縁部3に向けて貫通孔6の密度を大きくする例について説明した。この例に限られず、メッシュ部1の周縁部3から中央部2に向けて漸次または段階的に貫通孔6の密度を大きくし、メッシュ部1の中央部2において貫通孔6を密に形成し、メッシュ部1の周縁部3において貫通孔6を疎に形成してもよい。メッシュ部1に形成される貫通孔6の疎密は、噴霧粒子の所望の粒子径に対応して、任意に設計することが可能である。また、メッシュ部1を厚み方向に貫通する貫通孔6が、相互に異なる二つの断面積を有する大面積孔6Aおよび小面積孔6Bを含む例について説明したが、この構成に限られるものではない。つまり、メッシュ部1には、所望の粒子径に対応する三つ以上の異なる断面積を有する貫通孔6が形成されてもよい。
In the second embodiment described above, an example is described in which the density of the through holes 6 is increased from the central part 2 to the peripheral part 3 of the mesh part 1 by varying the density of the through holes 6 in the radial direction of the mesh part 1. did. Not limited to this example, the density of the through-holes 6 is increased gradually or stepwise from the peripheral edge 3 to the central part 2 of the mesh part 1, and the through-holes 6 are formed densely in the central part 2 of the mesh part 1. The through holes 6 may be formed sparsely in the peripheral edge 3 of the mesh part 1. The density of the through holes 6 formed in the mesh portion 1 can be arbitrarily designed in accordance with the desired particle diameter of the spray particles. Moreover, although the example in which the through-hole 6 penetrating the mesh portion 1 in the thickness direction includes the large-area hole 6A and the small-area hole 6B having two mutually different cross-sectional areas has been described, it is not limited to this configuration. . That is, the mesh part 1 may be formed with through holes 6 having three or more different cross-sectional areas corresponding to a desired particle diameter.
なお、これまでの説明においては、ホーン振動子40の超音波振動によって液体の噴霧粒子を発生させる例について説明したが、ホーン振動子に替えてSAW振動子が用いられてもよい。または、メッシュ部の入口面もしくは出口面に任意の振動子を接触させて、液体の噴霧粒子を発生させてもよい。
In the above description, an example in which liquid spray particles are generated by ultrasonic vibration of the horn vibrator 40 has been described, but a SAW vibrator may be used instead of the horn vibrator. Alternatively, an arbitrary vibrator may be brought into contact with the entrance surface or the exit surface of the mesh portion to generate the spray particles of the liquid.
以上のように本発明の実施の形態について説明を行なったが、今回開示された実施の形態はすべての点で例示であって、制限的なものではないと考えられるべきである。この発明の範囲は上記した説明ではなくて請求の範囲によって示され、請求の範囲と均等の意味、および範囲内でのすべての変更が含まれることが意図される。
As described above, the embodiment of the present invention has been described. However, it should be considered that the embodiment disclosed this time is illustrative and not restrictive in all respects. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
本発明の液体噴霧装置は、霧状の呼吸器系疾患の治療薬を患者に吸入させ、患者の体内の異なった部位に治療薬を同時に到達させるための液体噴霧装置に、特に有利に適用され得る。
The liquid spray device of the present invention is particularly advantageously applied to a liquid spray device that allows a patient to inhale a therapeutic drug for a nebulized respiratory disease and simultaneously reach the different sites in the patient's body. obtain.
1 メッシュ部、1A 出口面、1B 入口面、2 中央部、3 周縁部、6 貫通孔、6A 大面積孔、6B 小面積孔、30 ボトルユニット、40 ホーン振動子、41 先端部、42 表面、100 液体噴霧装置、LL 液体、LP1,LP2 液体粒子。
1 mesh part, 1A outlet face, 1B inlet face, 2 central part, 3 peripheral edge part, 6 through hole, 6A large area hole, 6B small area hole, 30 bottle unit, 40 horn vibrator, 41 tip part, 42 surface, 100 liquid spray device, LL liquid, LP1, LP2 liquid particles.
Claims (11)
- 貫通孔の形成された薄板状のメッシュ部と、
前記メッシュ部に液体を供給する給液部と、を備え、
前記貫通孔を通過させて前記液体を霧化し噴出する、液体噴霧装置であって、
前記メッシュ部には、互いに断面形状の異なる複数の前記貫通孔が形成されている、液体噴霧装置。 A thin plate-like mesh portion with through holes formed therein;
A liquid supply part for supplying a liquid to the mesh part,
A liquid spraying device that atomizes and ejects the liquid through the through-hole,
The liquid spraying apparatus, wherein the mesh portion is formed with a plurality of through holes having different cross-sectional shapes. - 前記メッシュ部の一定範囲毎に前記貫通孔の断面形状を異ならせた、請求項1に記載の液体噴霧装置。 2. The liquid spraying apparatus according to claim 1, wherein a cross-sectional shape of the through hole is varied for each predetermined range of the mesh portion.
- 前記メッシュ部の径方向に前記貫通孔の断面形状を異ならせた、請求項2に記載の液体噴霧装置。 The liquid spraying device according to claim 2, wherein a cross-sectional shape of the through hole is varied in a radial direction of the mesh portion.
- 前記メッシュ部の中央部と周縁部との一方から他方に向けて漸次または段階的に前記貫通孔の断面形状を変化させた、請求項3に記載の液体噴霧装置。 The liquid spraying device according to claim 3, wherein the cross-sectional shape of the through hole is changed gradually or stepwise from one of the central portion and the peripheral portion of the mesh portion toward the other.
- 前記貫通孔は、相対的に断面積の大きい大面積孔と相対的に断面積の小さい小面積孔とを含み、
前記大面積孔と前記小面積孔との一方が前記メッシュ部の中央部に形成され、他方が前記メッシュ部の周縁部に形成される、請求項1から請求項4のいずれかに記載の液体噴霧装置。 The through hole includes a large area hole having a relatively large cross-sectional area and a small area hole having a relatively small cross-sectional area,
5. The liquid according to claim 1, wherein one of the large area hole and the small area hole is formed at a center part of the mesh part, and the other is formed at a peripheral part of the mesh part. Spraying equipment. - 前記メッシュ部の全体に亘って断面形状の異なる前記貫通孔を分散させた、請求項1に記載の液体噴霧装置。 The liquid spraying device according to claim 1, wherein the through-holes having different cross-sectional shapes are dispersed throughout the mesh portion.
- 前記貫通孔は、相対的に断面積の大きい大面積孔と相対的に断面積の小さい小面積孔とを含み、
前記メッシュ部の全体に亘って前記大面積孔と前記小面積孔とが分散して形成されている、請求項1または請求項6に記載の液体噴霧装置。 The through hole includes a large area hole having a relatively large cross-sectional area and a small area hole having a relatively small cross-sectional area,
The liquid spraying device according to claim 1 or 6, wherein the large-area holes and the small-area holes are formed so as to be dispersed over the entire mesh portion. - 前記メッシュ部の一定範囲毎に前記貫通孔の疎密を変化させた、請求項1から請求項7のいずれかに記載の液体噴霧装置。 The liquid spraying apparatus according to any one of claims 1 to 7, wherein the density of the through holes is changed for each predetermined range of the mesh portion.
- 前記貫通孔は、前記メッシュ部の中央部において疎に形成され、前記メッシュ部の周縁部において密に形成される、請求項8に記載の液体噴霧装置。 The liquid spraying device according to claim 8, wherein the through holes are formed sparsely in a central portion of the mesh portion and densely formed in a peripheral portion of the mesh portion.
- 前記貫通孔は、前記メッシュ部の中央部において密に形成され、前記メッシュ部の周縁部において疎に形成される、請求項8に記載の液体噴霧装置。 The liquid spraying device according to claim 8, wherein the through-holes are formed densely at a central part of the mesh part and sparsely formed at a peripheral part of the mesh part.
- 前記メッシュ部は樹脂製である、請求項1から請求項10のいずれかに記載の液体噴霧装置。 The liquid spraying device according to any one of claims 1 to 10, wherein the mesh portion is made of resin.
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JP2012142942A JP2014004210A (en) | 2012-06-26 | 2012-06-26 | Liquid spray apparatus |
JP2012-142942 | 2012-06-26 |
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Cited By (1)
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US11529645B2 (en) * | 2016-01-14 | 2022-12-20 | Dürr Systems Ag | Perforated plate with a reduced diameter in one or both edge regions of a row of nozzles |
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JP2003071343A (en) * | 2001-08-31 | 2003-03-11 | Olympus Optical Co Ltd | Spray head |
JP2004290426A (en) * | 2003-03-27 | 2004-10-21 | Mitsubishi Materials Corp | Mesh for ultrasonic wave type inhalator |
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JP2011140008A (en) * | 2010-01-08 | 2011-07-21 | Omron Healthcare Co Ltd | Sheet member washing device |
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JPH071172A (en) * | 1993-04-22 | 1995-01-06 | Omron Corp | Thin-material mesh and its production and its apparatus for production |
JP2003071343A (en) * | 2001-08-31 | 2003-03-11 | Olympus Optical Co Ltd | Spray head |
JP2004290426A (en) * | 2003-03-27 | 2004-10-21 | Mitsubishi Materials Corp | Mesh for ultrasonic wave type inhalator |
EP1977778A1 (en) * | 2007-04-06 | 2008-10-08 | Markos Mefar S.P.A. | Electronic nebulizer for washing the nasal cavities of a user |
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