JP2012179518A - Dry mist jet nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dry mist jet nozzle by which moisture jetted from the nozzle is atomized into mist state to be atomized into dry mist state such that human skin does not get wet even though mist touches the human skin when jetting liquid into fine mist state.SOLUTION: Compressed air fed via the first gas flow passage of a nozzle body is jetted to the conical concave surface of the first mixing member, and compressed air fed via the second gas flow passage is jetted along respective conical convex surfaces from respective lateral holes via the deep groove parts of the respective peripheries of the first and second mixing members. Thus turbulent gas flow is generated on the surfaces of the conical concave surface of the first mixing member and the conical convex surface of the second mixing member. Then further compressed air fed via the second gas flow passage of the nozzle body is jetted to the conical concave surface of the third mixing member via the shallow groove parts of the respective outer peripheries of the first and second mixing members. Thus turbulent gas flow is generated on the surface of the conical concave surface of the third mixing member.

Description

  The present invention relates to a dry mist injection nozzle that atomizes a liquid into a fine mist so that the liquid does not get wet even when touched by human skin.

  The structure of the atomizing nozzle that sprays the liquid in a fine mist state can be classified into the following two forms. That is, it is possible to classify into a one-fluid atomizing nozzle that ejects liquid from fine holes and a two-fluid atomizing nozzle that atomizes liquid by a gas flow such as air or steam.

  By the way, in recent years, it is well known that the two-fluid atomizing nozzle is superior to the one-fluid atomizing nozzle in terms of liquid atomization performance.

  Then, the following patent document 1 is referred as a technique regarding the conventional two-fluid atomization nozzle. The two-fluid atomization nozzle described in this document comprises a liquid supply device, a liquid film forming device, a gas supply device, an airflow swirler, and an outer tube inside the outer tube. Among these, a part of the air flow sent into the outer cylinder is turned into a swirl flow through a first flow path that turns into a swirl flow through the first air flow swirler and a second air flow swirler. It is set as the structure which forms the 1st and 2nd swirl | vortex flow with a 2nd flow path.

  In addition, the liquid is ejected from a liquid ejection hole communicating with a liquid reservoir disposed inside the liquid supply device and becomes a cylindrical liquid film from the first circular cylinder, and the inner periphery of the cylindrical liquid film is formed in the first circumference. While being sandwiched by the air flow in the flow path, the outer periphery of the cylindrical liquid film is sandwiched by the air flow in the second flow path and flows out to be atomized.

  However, the structure of the above-mentioned Patent Document 1 has a structure that swirls the airflow in the nozzle like the first and second airflow swirlers, and the flow path therefor is very complicated. . Further, the performance of liquid atomization depends on the accuracy of the plurality of flow paths formed in the first and second airflow swirlers, and precise machining accuracy is required.

Japanese Patent No. 4266239

  By the way, the atomization nozzle as described above can be applied to a household or industrial spraying device such as a cosmetic sprayer or a humidifier, and can also be applied to a fuel injection nozzle such as a jet engine.

  Moreover, it is also possible to use for an air conditioner etc. by applying the cooling effect using the absorption of the vaporization heat at the time of evaporating a water | moisture content.

  Furthermore, when using the above-mentioned atomization nozzle, it is preferable to atomize the atomized water sprayed from the nozzle into a so-called dry mist that does not get wet even if it touches human skin. For that purpose, it is desirable that the atomized water ejected from the nozzle is atomized to 10 μm or less.

  The present invention has been made in view of the above circumstances, and when the liquid is sprayed in a fine mist state, the water sprayed from the nozzle is atomized into a mist so that the human skin can be touched. An object of the present invention is to provide a dry mist spray nozzle that is atomized into a dry mist that does not get wet.

  In order to solve the above-mentioned problems, the dry mist spray nozzle according to claim 1 of the present invention opens a liquid flow path in the axial direction of the nozzle body at the center of the head portion of the nozzle body, and the liquid flow Forming a first gas flow path for circulating compressed air arranged in the vicinity of the path and a plurality of second gas flow paths provided around the liquid flow path; and the first gas flow path and the second gas flow A first mixing member that is disposed on the nozzle body side in the hollow portion of the nozzle cap and has an opening formed in the center of the closed tip portion of the hollow nozzle cap. And the second mixing member arranged on the injection hole side in an overlapped state so that the liquid circulation hole formed at the center of each mixing member is aligned in the axial direction of the nozzle body and the nozzle cap The hollow part of the top of the nozzle body Combined, the inside of the tip of the nozzle cap is a third mixing member, and the first mixing member, the second mixing member, and the third mixing member are conically recessed on the side facing the nozzle body. A conical concave surface is formed, and a plurality of deep groove portions and shallow groove portions having a groove depth shallower than the deep groove portions are alternately provided on the outer periphery of the first mixing member and the second mixing member, and the outer periphery of the first mixing member A horizontal hole formed in each bottom portion of the deep groove portion is opened on the conical concave surface of the first mixing member, and a horizontal hole formed in each bottom portion of the deep groove portion on the outer periphery of the second mixing member is formed on the conical concave surface of the second mixing member. The compressed air supplied through the first gas flow path of the nozzle body is made to pass through the opening of the conical concave surface of the second mixing member toward the conical concave surface of the nozzle cap. While spraying towards the conical concave surface, the second nozzle body The conical concave surface of the first mixing member is formed by ejecting the compressed air fed through the body flow path from each lateral hole along each conical concave surface through the deep groove portions on the outer circumferences of the first mixing member and the second mixing member. Turbulent airflow is generated on the conical concave surface of the second mixing member, and the compressed air supplied through the second gas flow path of the nozzle body is subjected to shallow grooves on the outer circumferences of the first mixing member and the second mixing member. The turbulent airflow is generated on the conical concave surface of the third mixing member by spraying toward the conical concave surface of the third mixing member through the first mixing of the liquid supplied through the liquid flow path of the nozzle body. Each time the turbulent air flow generated on the conical concave surfaces of the member, the second mixing member, and the third mixing member passes, the particles are atomized and ejected in a mist form from the nozzle cap injection hole. .

  A dry mist spray nozzle according to a second aspect of the present invention is the dry mist injection nozzle according to the first aspect, wherein a single mixing member is accommodated in the hollow portion of the nozzle cap, and the mixing member includes a liquid circulation hole formed at the center thereof. A conical concave surface that is recessed in a conical shape on the side facing the nozzle body in a state where the mixing member is housed in the hollow of the nozzle cap, and a plurality of deep groove portions that are alternately formed on the outer periphery of the mixing member. A shallow groove part, a step part provided at each bottom part of each deep groove part, and an air hole penetratingly formed in the step part, the compressed air fed through the first gas flow path of the nozzle body is a nozzle The turbulent airflow is generated on the upper surface of the conical concave surface of the mixing member housed in the hollow of the cap, and the compressed air that has passed through each air hole of the mixing member through the second gas flow path of the nozzle body is the upper space of each stepped portion. While creating turbulence Compressed air passing through the shallow groove on the outer periphery of the mixing member via the second gas flow channel of the nozzle body collides with the conical concave surface of the nozzle cap to generate turbulent air flow, and is supplied via the liquid flow channel in the center of the nozzle body The liquid is atomized each time it passes through the internal space of the mixing member and the internal space of the nozzle cap, and is ejected in a mist form from the injection hole of the nozzle cap.

  Furthermore, the dry mist injection nozzle according to claim 3 of the present invention is characterized in that in claim 1 or 2, the liquid suction side pipe line of the bottle side branch valve connected to the lid of the bottle containing the liquid and communicating with the inside of the bottle is provided. Connected to the liquid flow path of the nozzle body via the liquid volume adjustment valve, while connecting the supply pipe for compressed air supplied from the compressor to the nozzle side branch valve, and connected one branch pipe of the nozzle side branch valve to the nozzle The nozzle main body is connected so as to communicate with the first gas flow path and the second gas flow path of the main body, and the other branch pipe of the nozzle side branch valve is connected to the air supply flow path of the bottle side branch valve. The compressed air supplied from the compressor is fed to the first gas channel and the second gas channel, and the liquid in the bottle is fed to the liquid channel of the nozzle body.

  Since the dry mist injection nozzle of the present invention is configured as described above, the compressed air injected from the opening of the second gas flow path formed in the nozzle body collides against the conical concave surface of the first mixing member. By doing so, turbulence is generated in the upper space of the conical concave surface of the first mixing member.

  In addition, compressed air injected from the opening of the second gas flow path formed in the nozzle body passes through the deep groove portion or the shallow groove portion on each outer periphery of the first mixing member and the second mixing member, and then passes from the lateral hole of each deep groove portion to each cone. By ejecting along the concave surface, turbulence is generated in the internal space on each of the conical concave surface of the first mixing member, the conical concave surface of the second mixing member, and the conical concave surface of the third mixing member.

  Furthermore, the shallow groove part formed in the outer periphery of the 1st mixing member and the 2nd mixing member is formed so that a groove depth is shallower than a deep groove part, and a horizontal hole is not formed like each deep groove part. For this reason, although the air flow which passes the shallow groove part formed in the outer periphery of the 1st mixing member in a nozzle main body and the 2nd mixing member becomes a little quantity than the air flow which passes a deep groove part, it becomes a quick air flow. By jetting toward the conical concave surface of the nozzle cap that is the third mixing member, turbulence is generated in the space on the upper surface of the conical concave surface of the nozzle cap.

  Therefore, according to the dry mist injection nozzle of the present invention, the liquid supplied through the liquid flow path of the nozzle body is atomized each time it passes through the internal space of the first mixing member, the second mixing member, and the third mixing member. The nozzle cap can be ejected from the nozzle hole.

  Further, the dry mist spray nozzle of the present invention ejects atomized mist-like liquid from the nozzle cap spray hole even when the single mixing member is housed in the hollow portion of the nozzle cap. It becomes possible.

  According to the dry mist injection nozzle of the present invention, the atomized mist-like liquid finally injected from the nozzle cap injection hole does not get wet even if it touches human skin, so-called dry mist. The atomized state is atomized.

  Further, the dry mist injection nozzle of the present invention can be applied to household or industrial spraying devices such as cosmetic sprayers and humidifiers, and can also be applied to fuel injection nozzles such as jet engines.

  Furthermore, when the dry mist injection nozzle of the present invention is used for an air conditioner or the like, it is possible to promote a cooling effect of the air conditioner by obtaining a cooling effect when absorbing the heat of vaporization.

It is an external view of the dry mist injection nozzle of Example 1 by this invention. It is an exploded view of the dry mist injection nozzle of Example 1 by the present invention. It is sectional drawing of the decomposition | disassembly state which shows the internal structure of the dry mist injection nozzle of Example 1 by this invention. It is sectional drawing after the assembly which shows the internal structure of the dry mist injection nozzle of Example 1 by this invention. It is a rear view of each member of the dry mist injection nozzle of Example 1 by the present invention. However, the nozzle body shows a cross-sectional state. It is a front view of each member of the dry mist injection nozzle of Example 1 by the present invention. (A) is a front view of the nozzle body showing a situation where the first mixing member is applied to the head of the nozzle body in the dry mist injection nozzle of Embodiment 1 of the present invention, and (b) is Embodiment 1 of the present invention. It is a front view of the nozzle main body which shows the condition which applied the 2nd mixing member to the head part of the nozzle main body in this dry mist injection nozzle. It is a principal part expanded sectional view of the dry mist injection nozzle of Example 1 by this invention. It is a side view in the case of the dry mist injection apparatus to which the dry mist injection nozzle by Example 2 by the present invention is applied. It is a partial side view which shows the other Example of the dry mist injection nozzle by Example 2 by this invention. It is a figure of the dry mist injection nozzle of Example 3 by this invention, (a) is a side view which shows a decomposition | disassembly state, (b) is a side view which shows a combined state. It is a figure which shows the nozzle cap in the dry mist injection nozzle of Example 3 by this invention, (a) is a front view, (b) is a side view. It is a figure which shows the nozzle main body in the dry mist injection nozzle of Example 3 by this invention, (a) is a front view, (b) is a side view. (A), (b) is the perspective view which looked at the nozzle cap and nozzle main body in the dry mist injection nozzle of Example 3 by this invention from the different direction. It is a figure which shows the mixing member in the dry mist injection nozzle of Example 3 by this invention, (a) is a front view, (b) is a rear view, (c) is a side view, (d) is A of (b). -A arrow sectional drawing, (e) is a BB arrow sectional drawing of (b).

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 or FIG. 2 is a view showing the appearance of the dry mist injection nozzle 1 of the present embodiment, and a connection port 4 for connecting a liquid feeding pipe (not shown) for liquid is provided on the side of the nozzle body 2. The connection port 4 is connected to a liquid flow path 5 (see FIG. 3) provided in a nozzle body 2 described later.

  Further, as shown in FIG. 2, a front end portion 6 having a thread groove 6 a formed on the outer periphery thereof is protruded forward at the tip of the nozzle body 2, and this thread groove 6 a is formed in the hollow portion 8 of the nozzle cap 7. It is possible to fix by screwing into the inner peripheral female screw.

  Further, as shown in FIG. 2, a rear thread groove 2a is formed at the tip of the nozzle body 2, and the nut part 9a of the air pipe 9 can be screwed into the rear thread groove 2a and fixed. Yes.

  3 or 4 is a cross-sectional view showing the internal structure of the dry mist injection nozzle 1 described above. As shown in these figures, a liquid flow path 5 is opened in the axial direction of the nozzle body 2 at the center of the leading portion 6 of the nozzle body 2.

  The liquid flow path 5 communicates with a connection port 4 formed vertically from the side of the nozzle body 2 and is bent at a right angle inside the nozzle body 2 so as to be at the head of the nozzle body 2. It is formed toward the center of 6.

  Further, as shown in FIG. 3 or FIG. 4, in the nozzle body 2, a first gas flow path 10 that circulates compressed air is provided in parallel in the vicinity of the liquid flow path 5 in which the opening 5 a is provided in the head portion 6. In addition, a plurality of second gas flow paths 11, 11... Are formed on the outer peripheral side of the first gas flow path 10, and both the first gas flow path 10 and the second gas flow paths 11, 11. It is set as the structure opened to the edge part of the head part 6.

  In such a configuration, as shown in FIG. 5 or FIG. 6, the first gas flow path 10 is in the vicinity of the liquid flow path 5 toward the center of the nozzle body 2, and has at least one liquid flow path. Forming.

  On the other hand, the second gas flow path 11 forms a plurality of flow paths in a state where the liquid flow path 5 is biased to one side of the nozzle body 2 in order to avoid the portion 5b formed perpendicularly from the side of the nozzle body 2. Like to do. If the space is possible, the plurality of second gas flow paths 11, 11... May be formed all around the liquid flow path 5.

  Furthermore, in the configuration of the dry mist injection nozzle 1 shown in FIGS. 3 to 6, an injection hole 7 a is formed in the center of the closed tip portion 7 b of the hollow nozzle cap 7, and the hollow portion 8 of the nozzle cap 7 is formed in the hollow portion 8. Is accommodated in a state where the first mixing member 12 disposed on the nozzle body 2 side and the second mixing member 13 disposed on the injection hole 7a side are overlapped (see FIG. 7).

  With this configuration, the liquid flow holes 12a and 13a formed at the centers of the mixing members 12 and 13 are aligned in a straight line in the axial direction so that the hollow portion 8 of the nozzle cap 7 is positioned at the top of the nozzle body 2. Part 6 can be coupled. In this connection, the screw groove 7 d formed on the inner periphery of the hollow portion 8 of the nozzle cap 7 is screwed into the screw groove 6 a formed on the outer periphery of the head portion 6 of the nozzle body 2.

  Further, with the above configuration, as shown in FIG. 7A, FIG. 7B or FIG. 8, the opening 5a of the liquid flow path 5 of the nozzle body 2, the liquid circulation hole 12a of the first mixing member 12, and the second mixing The liquid circulation hole 13a of the member 13 and the ejection hole 7a of the tip end portion 7b of the nozzle cap 7 are substantially aligned, and the liquid supplied through the liquid flow path 5 of the nozzle body 2 is supplied to the liquid circulation hole of the first mixing member 12. 12a, the liquid flow hole 13a of the second mixing member 13, and the ejection hole 7a of the tip 7b of the nozzle cap 7 can be ejected outward.

  In such a configuration of the dry mist injection nozzle 1 of this embodiment, if the inside of the tip of the nozzle cap 7 is the third mixing member 14 (see FIG. 7), the first mixing member 12, the second mixing member 13, and the In any mixing member of the three mixing members 14, conical concave surfaces 12c, 13c, and 7c that are recessed in a conical shape are formed on the side facing the nozzle body 2 side.

  Here, each structure of the 1st mixing member 12, the 2nd mixing member 13, and the 3rd mixing member 14 in a present Example is demonstrated, referring FIG. 5, FIG.

  5 is an external view of the cross section of the nozzle body 2 and the first mixing member 12, the second mixing member 13, and the nozzle cap 7 as viewed from the back side. FIG. 6 is an external view of the nozzle body 2, the first mixing member 12, the second mixing member 13, and the nozzle cap 7 as viewed from the front.

  First, the first mixing member 12 is housed with an outer diameter that is substantially in contact with the inner periphery of the hollow portion 8 of the nozzle cap 7, and the outer periphery has, for example, three deep groove portions 12b having substantially U-shapes. Are formed, and shallow groove portions 12r having a round shape are formed on the outer periphery between the deep groove portions 12b, 12b.

  The relationship between each deep groove portion 12b and shallow groove portion 12r is that the deep groove portion 12b is formed in a groove shape deeper than the shallow groove portion 12r, thereby enabling the deep groove portion 12b to have a larger air flow rate than the shallow groove portion 12r. Is. The shape of the deep groove portion 12b and the shallow groove portion 12r has a difference in whether the cross-sectional opening is wide or narrow in order to cause a difference in the air flow rate of each groove. It is not limited to the groove shape.

  Further, as shown in FIG. 5 or FIG. 7B, in the first mixing member 12, a horizontal hole 12d is formed at the bottom of each deep groove portion 12b where the air flow rate is larger than each shallow groove portion 12r. Is configured so as to face the center of the first mixing member 12 and open on the curved surface of the conical concave surface 12c.

  On the other hand, in FIG. 5 to FIG. 7, the second mixing member 13 has an outer diameter that is approximately in contact with the inner periphery of the hollow portion 8 of the nozzle cap 7 and is housed in the same manner as the first mixing member 12 described above. .. Are formed on the outer periphery, for example, at three locations, and shallow groove portions 13r, 13r,... Are formed between the deep groove portions 13b, 13b,. The relationship between the deep groove portion 13b and the shallow groove portion 13r is that the deep groove portion 13b is formed in a deeper groove shape than the shallow groove portion 13r, and the deep groove portion 13b is more than the shallow groove portion 13r, as in the first mixing member 12 described above. A large air flow rate is possible.

  Furthermore, in the 3rd mixing member 13, the horizontal hole 13d is formed in the bottom part of each deep groove part 13b. Further, each lateral hole 13d is opened on the curved surface of the conical concave surface 13c, and further, the liquid circulation hole 13e from the opening of the horizontal hole 13d on the curved surface of each conical concave surface 13c to the front, that is, toward the conical concave surface 7c of the nozzle cap 7. It is set as the structure penetrated by.

  As shown in FIG. 6, each liquid circulation hole 13 e of the second mixing member 13 is formed in a concave groove 13 f formed on the front side of the second mixing member 13.

  In such a configuration, as shown in FIG. 8, when the first mixing member 12 and the second mixing member 13 are accommodated in the hollow portion 8 of the nozzle cap 7 as shown in FIG. The opening 5a of the second liquid flow path 5, the liquid circulation hole 12a of the first mixing member 12, the liquid circulation hole 13a of the second mixing member 13, and the ejection hole 7a of the nozzle cap 7 are substantially aligned.

  Further, as shown in FIGS. 7A and 7B, any of the plurality of second gas flow paths 11, 11... Of the nozzle body 2 is shallow with any deep groove portion 12 b of the first mixing member 12. By facing the groove 12r, the compressed air fed through the plurality of second gas flow paths 11 of the nozzle body 2 can be sent to the deep groove 12b and the shallow groove 12r.

  Further, as shown in FIG. 7B or FIG. 8, the deep groove portion 12b and the shallow groove portion 12r of the first mixing member 12 are opposed to the deep groove portion 13b and the shallow groove portion 13r of the second mixing member 13, so that the nozzle It becomes possible to send the compressed air supplied through the plurality of second gas flow paths 11 of the main body 2 to the deep groove portion 13b and the shallow groove portion 13r.

  With the above configuration, the compressed air ejected from the first gas flow path 10 in the vicinity of the liquid flow path 5 of the nozzle body 2 hits the surface of the conical concave surface 12c of the first mixing member 12 and is on the surface of the conical concave surface 12c. A turbulent air current is generated in the space, and the liquid sprayed from the opening 5a of the liquid channel 5 to the liquid circulation hole 12a is crushed and atomized.

  Further, in this first mixing member 12, the compressed air injected from the opening of the second gas flow path 11 of the nozzle body 2 passes through each deep groove portion 12 b of the first mixing member 12 from each lateral hole 12 d to the conical concave surface 12 c. The turbulent air flow in the space of the conical concave surface 12c is further complicated, and the liquid sprayed from the opening 5a of the liquid flow path 5 to the liquid circulation hole 12a is further atomized.

  Further, in the second mixing member 13, the atomized liquid ejected from the liquid circulation hole 12 a of the first mixing member 12 is ejected toward the liquid circulation hole 13 a of the second mixing member 13. At this time, the compressed air that reaches each deep groove portion 13b of the second mixing member 13 through each deep groove portion 12b of the first mixing member 12 passes through the lateral hole 13d of the second mixing member 13 and enters along the conical concave surface 13c. Then, turbulence is generated in the space of the upper surface, and the atomized liquid directed from the liquid circulation hole 12a of the first mixing member 12 to the liquid circulation hole 13a of the second mixing member 13 is further atomized.

  Further, when the compressed air passing through each deep groove portion 13 b of the second mixing member 13 flows into the liquid circulation hole 13 e of the second mixing member 13, the compressed air causes the inside of the tip end of the nozzle cap 7 to be the third mixing member 14. Upon hitting the conical concave surface 7c, turbulence is generated in the space of the upper surface.

  Then, the atomized liquid ejected from the liquid circulation hole 13a of the second mixing member 13 toward the ejection hole 7a of the nozzle cap 7 can be ejected outward from the ejection hole 7a in a further atomized state. It becomes possible.

  In addition, the compressed air that has entered the concave groove 13f formed on the front side of each liquid circulation hole 13e of the second mixing member 13 has an effect of rectifying the space in the conical concave surface 7c of the nozzle cap 7 toward the center.

  In the present embodiment, the dry mist injection nozzle 1 configured as described above can be applied to the dry mist injection device 15 shown in FIG.

  That is, the dry mist injection device 15 shown in FIG. 9 is incorporated in a case 16 having a predetermined shape, is coupled to the lid portion 18 of the bottle 17 containing the liquid, and is connected to the inside of the bottle. The suction side pipe line 20 is connected to the connection port 4 via the liquid amount adjusting valve 21 and connected to the liquid flow path 5 inside the nozzle body 2.

  Further, a compressor (not shown) provided outside the case 16 is connected to the connection port 27, and a compressed air liquid supply pipe 22 is connected to the nozzle side branch valve 23, and one of the nozzle side branch valves 23 is connected. By connecting the branch pipe 24 to the air pipe 9, it communicates with the first gas flow path 10 and the second gas flow path 11 of the nozzle body 2.

  Further, the other branch pipe 25 of the nozzle side branch valve 23 is connected to the air supply pipe 26 of the bottle side branch valve 19.

  With such a configuration, the compressed air supplied from the compressor is fed to the first gas flow path 10 and the second gas flow path 11 of the nozzle body 2, while the liquid flow path 5 of the nozzle body 2 is in the bottle 17. It becomes possible to feed the liquid.

  As another example of the dry mist injection nozzle 1 of Example 2, as shown in FIG. 10, a connection port 4 and an air pipe 9 are arranged in parallel at the rear part of the nozzle body 2. It is also possible to form a liquid channel, a first gas channel, and a second gas channel.

  In this case, since there is no protrusion outside the nozzle body 2, the apparatus to which the dry mist spray nozzle 1 of the present invention is applied can be configured compactly.

  In the first embodiment, the two mixing members including the first mixing member 12 and the second mixing member 13 are accommodated in the hollow portion of the nozzle cap 7. By storing the single mixing member 27 in the hollow portion 8 of the cap 7, a simpler configuration is obtained.

  Other configurations of the present embodiment are essentially the same as those of the first embodiment, as shown in FIGS. Accordingly, in FIGS. 11 to 13, the same reference numerals as those used in the first embodiment are used for the same components as those in the first embodiment, and the description of such components is the contents of the first embodiment. Since it is the same as that, it will be omitted.

  Therefore, the structure of the single mixing member 27 of this embodiment will be described. As shown in FIGS. 14 and 15, a liquid circulation hole 27 a is formed at the center of the mixing member 27. As shown in FIGS. 11 (a) and 11 (b), the liquid circulation hole 27 a is formed in a state where the mixing member 27 is stored in the hollow portion 8 of the nozzle cap 7, and the nozzle cap 7 is threaded on the screw groove 6 a of the nozzle body 2. The liquid flow hole 27a at the center of the mixing member 27 is in linear communication with the opening 5a of the liquid flow path 5 at the center of the nozzle body 2 and the injection hole 7a of the nozzle cap 7. Become.

  Further, the mixing member 27 has a conical concave surface 27c that is recessed conically on the side facing the nozzle body 2 in a state where the mixing member 27 is housed in the hollow portion 8 of the nozzle cap 7 as shown in FIG. Is formed. As shown in FIG. 15 (d), the conical concave surface 27c is formed so that the concave shape of the conical concave surface 27c is a linear inclined surface, or a curved inclined surface. Also good.

  In addition, a plurality of (three in this embodiment) deep groove portions 27b and shallow groove portions 27r are alternately formed on the outer periphery of the mixing member 27 of the present embodiment, and each deep groove portion 27b has a bottom portion thereof. A step portion 27d is formed, and an air hole 27e is formed in the step portion 27d.

  Also in this mixing member 27, the relationship between each deep groove portion 12b and the shallow groove portion 12r is that the deep groove portion 12b is formed in a deeper groove shape than the shallow groove portion 12r, and the deep groove portion 12b is the shallow groove portion 12r. This enables a larger air flow rate.

  Also in this embodiment, the shapes of the deep groove portion 12b and the shallow groove portion 12r cause a difference in the air flow rate of the respective grooves, and therefore have a difference in whether the cross-sectional opening is wide or narrow. The groove shape is not limited to a U shape or a rounded cross section.

  With such a configuration, the compressed air supplied through the first gas flow path 10 of the nozzle body 2 generates turbulence in the space above the conical concave surface 27 c of the mixing member 27 accommodated in the hollow of the nozzle cap 7. And turbulence is generated in the upper space of the stepped portion 27d. Furthermore, the compressed air supplied through the first gas flow path 10 of the nozzle body 2 collides with the conical concave surface 27 c of the mixing member 27 to generate turbulent airflow.

  On the other hand, the compressed air passing through the shallow groove portion 27r on the outer periphery of the mixing member 27 through the second gas flow path 11 of the nozzle body 2 collides with the conical concave surface 7c of the nozzle cap 7 to generate turbulence. As described above, in this embodiment, it is possible to adjust the optimum air flow rate by adjusting the sizes of the groove openings of the shallow groove portion 27r and the deep groove portion 27b at the design stage in advance.

  With the above configuration, according to the dry mist injection nozzle of the present embodiment, every time the liquid supplied through the liquid flow path 5 in the center of the nozzle body 2 passes through the internal space of the mixing member 27 and the internal space of the nozzle cap 7. And can be sprayed in the form of mist as dry mist from the injection hole 7a of the nozzle cap 7.

  In the dry mist injection nozzle of Example 3, as shown in FIG. 10, the connection port 4 and the air pipe 9 are arranged in parallel at the rear part of the nozzle body 2, and the liquid flow path and the By forming the 1 gas flow path and the second gas flow path, it is possible to configure a compact structure. Further, the structure of the dry mist injection nozzle of the third embodiment may be accommodated in the case 16 of the second embodiment, and the bottle 17 may be coupled to the case 16.

  The dry mist injection nozzle of the present invention is a dry mist that does not get wet even if it touches human skin by spraying the liquid into a fine mist state by atomizing the water sprayed from the nozzle into a mist. In addition to being used for household or industrial spray devices such as cosmetic sprayers, humidifiers, and air conditioners, it can be used for fuel injection nozzles such as jet engines.

DESCRIPTION OF SYMBOLS 1 Dry mist injection nozzle 2 Nozzle main body 2a Rear part thread groove 3 Feeding pipe 4 Connection port 5 Liquid flow path 5a Opening 5b Vertically formed part 6 Front part 6a Screw groove 6b Projection part 7 Nozzle cap 7a Injection hole 7b Tip part 7c Conical concave surface 7d Screw groove 8 Hollow portion 9 Air tube 9a Nut 10 First gas flow path 11 Second gas flow path 12 First mixing member 12a Liquid flow hole 12b Deep groove portion 12c of the first mixing member Conical concave surface 12d Horizontal hole 12r First 1 shallow groove portion 13 of the mixing member 2nd mixing member 13a liquid flow hole 13b deep groove portion 13c of the second mixing member conical concave surface 13d lateral hole 13e liquid flow hole 13f concave groove 13r shallow groove portion 14 of the second mixing member third mixing member 15 dry Mist injection device 16 Case 17 Bottle 18 Lid 19 Bottle side branch valve 20 Liquid suction side pipe 21 Liquid amount adjustment valve 22 Liquid supply pipe 3 nozzle side branch valve 24 one branch pipe 25 the other branch pipe 26 Air supply pipe 27 mixing member 27a liquid flow hole 27b deep groove portion 27c concave conical surface 27d stepped portion 27e air hole 27r shallow groove

Claims (3)

A liquid channel is opened in the center of the head portion of the nozzle body in the axial direction of the nozzle body, and a first gas channel and a liquid channel for flowing compressed air arranged in parallel in the vicinity of the liquid channel While forming a plurality of second gas flow paths provided around, and opening the first gas flow path and the second gas flow path at the top of the nozzle body,
An injection hole is formed in the center of the closed tip portion of the hollow nozzle cap, a first mixing member disposed on the nozzle body side in the hollow portion of the nozzle cap, and a second mixing member disposed on the injection hole side, Are stored in a state where the liquid circulation holes formed in the center of each mixing member are aligned in the axial direction of the nozzle body, and the hollow portion of the nozzle cap is coupled to the head portion of the nozzle body,
The inside of the tip of the nozzle cap is the third mixing member, and the conical concave surface that is recessed conically on the side facing the nozzle body is formed on any of the first mixing member, the second mixing member, and the third mixing member. Forming and alternately providing a plurality of deep groove portions on the outer periphery of the first mixing member and the second mixing member, and shallow groove portions having a groove depth shallower than the deep groove portion,
A horizontal hole formed in each bottom portion of the deep groove portion on the outer periphery of the first mixing member is opened on the conical concave surface of the first mixing member, and a horizontal hole formed on each bottom portion of the deep groove portion on the outer periphery of the second mixing member. By opening on the conical concave surface of the mixing member and penetrating from the conical concave surface of the second mixing member toward the conical concave surface of the nozzle cap,
The compressed air fed through the first gas flow path of the nozzle body is jetted toward the conical concave surface of the first mixing member, while the compressed air fed through the second gas flow path of the nozzle body is the first. Turbulent airflow is generated on the conical concave surface of the first mixing member and the conical concave surface of the second mixing member by ejecting along the conical concave surface from each lateral hole through the deep grooves on the outer circumferences of the mixing member and the second mixing member. Give rise to
Moreover, by injecting the compressed air supplied through the second gas flow path of the nozzle body toward the conical concave surface of the third mixing member via the shallow groove portions on the outer circumferences of the first mixing member and the second mixing member, Creating turbulence on the conical concave surface of the third mixing member;
The liquid supplied through the liquid flow path of the nozzle body is atomized each time it passes through the turbulent air generated on the conical concave surfaces of the first mixing member, the second mixing member, and the third mixing member, and is ejected from the nozzle cap. A dry mist spray nozzle characterized by being sprayed in a mist form from a hole. A single mixing member is accommodated in the hollow portion of the nozzle cap, and the mixing member is opposed to the nozzle body in a state where the mixing member is accommodated in the hollow of the nozzle cap and the liquid circulation hole formed in the center thereof. A conical concave surface formed in a conical shape on the outer side, a plurality of deep groove portions and shallow groove portions alternately formed on the outer periphery of the mixing member, a step portion provided at each bottom portion of each deep groove portion, and the step Air holes formed through the part,
The compressed air fed through the first gas flow path of the nozzle body generates turbulence on the upper surface of the conical concave surface of the mixing member housed in the hollow of the nozzle cap,
While the compressed air that has passed through each air hole of the mixing member through the second gas flow path of the nozzle body generates turbulence in the upper space of each stepped portion,
Compressed air passing through the shallow groove on the outer periphery of the mixing member via the second gas flow channel of the nozzle body collides with the conical concave surface of the nozzle cap to generate turbulent air flow, and is supplied via the liquid flow channel in the center of the nozzle body 2. The dry mist according to claim 1, wherein the liquid is atomized each time it passes through the internal space of the mixing member and the internal space of the nozzle cap, and is sprayed in a mist form from the injection hole of the nozzle cap. Injection nozzle. While connecting the liquid suction side pipe line of the bottle side branch valve connected to the lid of the bottle containing the liquid and communicating with the inside of the bottle to the liquid flow path of the nozzle body through the liquid amount adjustment valve,
A supply pipe for compressed air supplied from the compressor is connected to the nozzle side branch valve, and one branch pipe of the nozzle side branch valve is connected to the first gas channel and the second gas channel of the nozzle body. By connecting the other branch pipe of the nozzle side branch valve to the air supply passage of the bottle side branch valve,
Compressed air supplied from a compressor is fed to the first gas channel and the second gas channel of the nozzle body, and the liquid in the bottle is fed to the liquid channel of the nozzle body. The dry mist injection nozzle according to claim 1 or 2.