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A sprayer which inhibits or prevents clogging from occurring in a nozzle when a liquid is ejected from the nozzle includes a nozzle having a first internal tube through which a first liquid passes, and a second internal tube through which a second liquid passes. An external tube is provided in which

A sprayer which inhibits or prevents clogging from occurring in a nozzle when a liquid is ejected from the nozzle includes a nozzle having a first internal tube through which a first liquid passes, and a second internal tube through which a second liquid passes. An external tube is provided in which the first internal tube and the second internal tube are positioned so that the gas passes therebetween. In the sprayer, each distal end part of the first internal tube and the second internal tube includes a gas permeable film impermeable to each liquid, and permeable to the gas.

대표청구항 ▼

1. A sprayer comprising: a syringe comprising a syringe barrel and a plunger movably positioned in the syringe barrel, the syringe barrel containing a liquid;a main body comprised of at least one syringe receiving area for receiving the syringe;a user operable operation part operable by the user to

1. A sprayer comprising: a syringe comprising a syringe barrel and a plunger movably positioned in the syringe barrel, the syringe barrel containing a liquid;a main body comprised of at least one syringe receiving area for receiving the syringe;a user operable operation part operable by the user to move the plunger within the syringe barrel when the syringe is positioned in the syringe receiving area to discharge the liquid from the syringe;a nozzle comprising a liquid supply passage possessing an interior along which flows the liquid discharged from the syringe barrel, a gas supply passage connectable to a gas source and possessing an interior along which flows gas from the gas source, and a film separating the interior of the liquid supply passage and the interior of the gas supply passage; andthe film comprising a plurality of through holes communicating the interior of the gas supply passage to the interior of the liquid supply passage so that gas in the interior of the gas supply passage flows through the through holes in the film and into the interior of the liquid supply passage;wherein the liquid supply passage is a liquid supply tube, and the film comprises a plurality of cylindrical films which are axially spaced apart from one another along an axial extent of the liquid supply tube, each of the cylindrical films comprising a plurality of through holes, each of the cylindrical films having opposite ends connected to the liquid supply tube so that the cylindrical films form a part of the liquid supply tube. 2. The sprayer according to claim 1, wherein the liquid supply passage is an internal tube and the gas supply passage is an external tube surrounding the internal tube. 3. The sprayer according to claim 1, wherein the syringe is a first syringe, the liquid in the syringe barrel is a first liquid, the liquid supply passage is a first liquid supply tube, and the film is a first film connected to the first liquid supply tube; further comprising: a second syringe comprising a plunger movably positioned in a syringe barrel containing a second liquid different from the first liquid;a second liquid supply tube possessing an interior along which flows the second liquid discharged from the syringe barrel of the second syringe, the second liquid supply tube comprising a second film possessing a plurality of through holes allowing the gas in the gas supply tube to flow through the holes in the second film and into the second liquid supply tube. 4. The sprayer according to claim 1, wherein the through holes in the film possess an average pore diameter of 0.45 μm or less. 5. The sprayer according to claim 1, wherein the syringe is a first syringe, the liquid in the syringe barrel is a first liquid, and the liquid supply passage is a first liquid supply tube; further comprising: a second syringe comprising a plunger movably positioned in a syringe barrel containing a second liquid different from the first liquid;a second liquid supply tube possessing an interior along which flows the second liquid discharged from the syringe barrel of the second syringe; andthe first liquid supply tube and the second liquid supply tube merging into one another at a merge part at which the first and second liquids are mixed together, the film comprising a cylindrical film at the merge part so that the first and second liquids mix together in the merge part surrounded by the cylindrical film. 6. The sprayer according to claim 1, wherein the syringe is a first syringe, the liquid in the syringe barrel is a first liquid, and the liquid supply passage is a first liquid supply tube; further comprising: a second syringe comprising a plunger movably positioned in a syringe barrel containing a second liquid different from the first liquid;a second liquid supply tube possessing an interior along which flows the second liquid discharged from the syringe barrel of the second syringe;the first liquid supply tube and the second liquid supply tube merging into one another at a merge part at which the first and second liquids are mixed together; andthe film possessing a tubular shape with a closed end and an open end communicating with the gas supply tube, the closed end of the tubular film being positioned in the merge part. 7. A sprayer comprising: a nozzle comprised of a plurality of liquid flow paths through which respective liquids pass, and a gas flow path connectable to a source of gas and along which the gas passes for ejecting the liquids, the nozzle also including an ejection port;a first liquid supply connected to one of the liquid flow paths;a second liquid supply connected to an other of the liquid flow paths;the first and second liquid supplies containing respective liquids different in liquid composition;the plurality of liquid flow paths merging together at a merge part so that the first and second liquids mix together within an interior of the merge part;a gas permeable film disposed at the merge part, the gas permeable film being impermeable to the liquid, and permeable to the gas in at least a wall part defining the liquid flow path so that the gas introduced into the gas flow path from the gas source flows through the gas permeable film and into the merge part to mix with the first and second liquids, with the gas and the first and second liquids together exiting the nozzle by way of the ejection port. 8. The sprayer according to claim 7, wherein the nozzle comprises a first internal tube forming the one liquid flow paths and a second internal tube forming the other liquid flow path, the first and second internal tubes being located inside an external tube with a gap between an outer circumferential surface of each of the first and second internal tubes and an internal peripheral surface of the external tube, the gap forming the gas flow path. 9. The sprayer according to claim 7, wherein the gas permeable film is situated at a distal end part of the first and second liquid flow paths. 10. The sprayer according to claim 7, wherein the gas permeable film is germ impermeable. 11. The sprayer according to claim 7, wherein the gas permeable film comprises a plurality of pores penetrating through the film in a thickness direction of the film, the pores possessing an average pore diameter of 0.45 μm or less. 12. The sprayer according to claim 7, wherein the gas permeable film is fabricated from a material having hydrophobicity, or is fabricated from a material subjected to a hydrophobization processing. 13. The sprayer according to claim 7, wherein the gas which has passed through the gas permeable film becomes bubbles in the liquids passing through the merge part, and stirs the liquids. 14. The sprayer according to claim 7, wherein the first liquid supply and the second liquid supply are each comprised of a syringe having a syringe external tube, a gasket inserted in the syringe external tube, a plunger for moving and operating the gasket along the longitudinal direction of the syringe external tube, and the respective liquid filled in the space formed by the syringe external tube and the gasket. 15. The sprayer according to claim 7, wherein the liquid supply means comprises a syringe in which a plunger is movably positioned in a syringe barrel possessing an interior, the liquid flow path being in fluid communication with the interior of the syringe barrel so that forward movement of the plunger in the syringe barrel introduces liquid in the interior of the syringe barrel into the liquid flow path. 16. The sprayer according to claim 7, wherein the wall part is a wall part or an inner tube having a lumen constituting the liquid flow path, the inner tube being positioned in an outer tube so that a space exists between an inner surface of the outer tube and an outer surface of the inner tube, the space constituting the gas flow path, the gas permeable film possessing one side facing the space and contactable by the gas, and an opposite side facing the lumen and contactable by the liquid. 17. A sprayer comprising: a syringe comprising a syringe barrel and a plunger movably positioned in the syringe barrel, the syringe barrel containing a liquid;a main body comprised of at least one syringe receiving area for receiving the syringe;a user operable operation part operable by the user to move the plunger within the syringe barrel when the syringe is positioned in the syringe receiving area to discharge the liquid from the syringe;a nozzle comprising a liquid supply passage possessing an interior along which flows the liquid discharged from the syringe barrel, a gas supply passage connectable to a gas source and possessing an interior along which flows gas from the gas source, and a film separating the interior of the liquid supply passage and the interior of the gas supply passage so that one side of the film is contactable by the gas and an opposite side of the film is contactable by the liquid, the nozzle possessing an ejection port; andthe film comprising a plurality of through holes communicating the interior of the gas supply passage to the interior of the liquid supply passage so that gas in the interior of the gas supply passage flows through the through holes in the film and into the interior of the liquid supply passage where the gas mixes with the liquid in the liquid supply passage to form a gas/liquid mixture in the liquid supply passage, the liquid supply passage communicating with the ejection port so that the gas/liquid mixture exits the nozzle by way of the ejection port;wherein the syringe is a first syringe, the syringe barrel is a first syringe barrel, the plunger is a first plunger, the liquid is a first liquid, the at least one syringe receiving area is a first syringe receiving area, and the liquid supply passage is a first liquid supply passage; andfurther comprising a second syringe comprising a second syringe barrel and a second plunger movably positioned in the second syringe barrel, the second syringe barrel containing a second liquid which is compositionally different from the first liquid;the main body comprising a second syringe receiving area configured to receive the second syringe;the user operable operation part being operable by the user to move the second plunger within the second syringe barrel when the second syringe is positioned in the second syringe receiving area to discharge the second liquid from the second syringe; andthe nozzle comprising a second liquid supply passage possessing an interior along which flows the second liquid discharged from the second syringe barrel;wherein the nozzle comprises a merge part, upstream of the ejector port, at which the first and second liquid supply passages merge with one another so that the first and second liquids are mixed together. 18. The sprayer according to claim 17, wherein the film is located at the merge part to permit the gas in the interior of the gas supply passage to flow through the through holes in the film and into the merge part at which the first and second liquids mix so that the gas mixes with the first and second liquids in the merge part. 19. The sprayer according to claim 17, wherein the liquid supply passage possesses a forward end and a distal end, the film possessing a proximal end space distally of the proximal end of the liquid supply passage. 20. A sprayer comprising: a first syringe comprising a first syringe barrel and a first plunger movably positioned in the first syringe barrel, the first syringe barrel containing a first liquid;a second syringe comprising a second plunger movably positioned in a second syringe barrel containing a second liquid different from the first liquid;a main body comprised of at least one syringe receiving area for receiving the first syringe and the second syringe;a user operable operation part operable by the user to move the first plunger within the first syringe barrel while the first syringe is positioned in the first syringe receiving area to discharge the first liquid from the first syringe and to also move the second plunger within the second syringe barrel while the second syringe is positioned in the second syringe receiving area to discharge the second liquid from the second syringe;a nozzle comprising a first liquid supply tube possessing an interior along which flows the first liquid discharged from the first syringe barrel, a second liquid supply tube possessing an interior along which flows the second liquid discharged from the second syringe barrel of the second syringe, a gas supply passage connectable to a gas source and possessing an interior along which flows gas introduced into the gas supply passage from the gas source;the first liquid supply tube and the second liquid supply tube merging together at a merge part possessing an interior at which the first and second liquids are mixed together;a film at the merge part separating the interior of the merge part and the interior of the gas supply passage, the film comprising a plurality of through holes communicating the interior of the gas supply passage to the interior of the merge part so that gas introduced into the interior of the gas supply passage from the gas source flows through the through holes in the film and into the interior of the merge part to mix with the first and second liquids in the merge part.