JP3370752B2 - Aerosol device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerosol device equipped with an injection flow rate control unit. More specifically, the present invention relates to an aerosol device that includes an injection flow rate suppressing portion that is unlikely to be clogged even though the flow rate resistance is increased to suppress the injection flow rate.

[0002]

2. Description of the Related Art A conventional aerosol device is shown in FIG.
An injection valve (hereinafter referred to as a valve) 51 as shown in FIG. The valve 51 includes a tubular valve housing 52 and a stem 5 slidably inserted therein.
3 and a dip tube 54 mounted below the valve housing 52. The push button 56 having the nozzle 55 is provided on the upper end of the stem 53.
Is fitted. In FIG. 8, 57 is a gasket, 58 is a spring, and 59 is a part of the mounting cup.

When the push button 56 of such a valve 51 is pushed, the gasket 57 is bent, the hole 60 of the stem 53 is opened and the flow path is opened, so that the contents are ejected from the nozzle 55. Conventionally, when it is desired to suppress the ejection amount of contents in such an aerosol device, in the middle of the flow path, for example, the hole 61 at the lower end of the valve housing 52 or the hole 60 of the stem.
The push button 56 inside P1, stem 5
3, the orifice member 62 shown in FIG. 9 is fitted in the inner P2 of the dip tube 54, the middle P3 of the dip tube 54, the lower end opening (not shown), or the like to narrow the flow path, and the flow rate is restricted by the orifice action. I am trying.

[0004]

However, in the above-mentioned conventional method, since the orifice diameter is small, the undiluted solution flowing down from the push button 56 is hardened to block the hole 60 of the stem or is dispersed in the undiluted solution. The melted substance (R in FIG. 9) may block the hole 61 of the valve housing or the orifice 62a of the orifice member 62 of the dip tube shown in FIG. In this case, since there is no bypass in the holes 60, 61 and the orifice 62a, only one passage is blocked, and the aerosol device cannot be used to the end. If the inner diameter of the hole or orifice is reduced in order to suppress the flow rate significantly, the tendency becomes more remarkable.

It is an object of the present invention to solve the problems of the conventional flow rate suppressing method, and to provide an aerosol device having a large flow rate suppressing action and an injection flow rate suppressing portion which is less likely to cause clogging.

The aerosol device (claim 1) of the present invention comprises:
A dip tube, a valve housing, a stem, a passage extending from the inside of an aerosol container to the outside through an injection hole of a push button, and an injection device for operating communication and blocking of the passage, the aerosol device comprising: It is characterized in that the stem or the push button is provided with a flow rate suppressing portion formed by the flow path resistance of a plurality of continuous long gap passages along the longitudinal direction of the passage. Also,
A second aspect (claim 2) of the aerosol device of the present invention is
A dip tube, a valve housing, a stem, a passage extending from the inside of an aerosol container to the outside through an injection hole of a push button, and an injection device for operating communication and blocking of the passage, the aerosol device comprising: It is characterized in that at least a part of the dip tube is provided with a flow rate suppressing portion formed of a flow path resistance of a plurality of continuous long gap passages along the longitudinal direction of the passage. Further, a third aspect (claim 3) of the aerosol device of the present invention is to provide a passage from the inside of the aerosol container to the outside through the injection hole of the dip tube, the valve housing, the stem and the push button, and the communication between the passage and An aerosol device comprising an injection valve for operating a shutoff, wherein a plurality of continuous long gap passages are provided below a prepared hole of the valve housing along a longitudinal direction of the passage. It is characterized in that a flow rate suppressing section is provided. In the aerosol device of the present invention, it is preferable that the continuous long gap passage has a substantially triangular cross section (claim 4). Further, it is preferable that the continuous gap passages are gaps formed by bundling and filling at least four core members having a circular cross section so as to be in close contact with each other (claim 5).

[0007]

The flow suppressing portion in the aerosol device of the present invention has a single orifice (for example, a cross-sectional area) as in the prior art.
Rather than restricting the flow rate by 0.05 to 0.2 mm ² ), the flow resistance of multiple continuous long gap passages is provided in the stem or push button. Therefore, the cross-sectional area of the clearance passage may be larger than that of the orifice, and clogging is less likely to occur. As described above, the flow rate suppressing portion of the aerosol product of the present invention can suppress the flow rate and inject the content in a required amount, and can eliminate the waste of injection,
There is an advantage that clogging does not occur. further,
Since a plurality of the passages are provided, even if one gap passage is clogged, the flow passage is secured by the remaining gap passages. That is, when the aerosol device is used by being filled with the contents, there is an advantage that the contents can be used up to the end because no clogging occurs during use.

A second aspect of the aerosol device of the present invention is
The flow rate suppressing unit is provided on at least a part of the dip tube, and the flow rate suppressing unit can be used as it is as a dip tube. Moreover, the 3rd aspect of the aerosol apparatus of this invention provides the said flow volume suppression part under the prepared hole of a valve housing. These can obtain the same effects as those described above.

Further, when each of the continuous long gap passages is formed in a substantially triangular shape, the peripheral length with respect to the cross-sectional area is larger than that of the circular orifice, and therefore the flow passage resistance is further increased, so that one passage is formed. The cross-sectional area may be larger than in the case of an orifice (e.g. 10-100% increase over conventional).
Further, if it is a circular orifice, fine particles of insoluble matter such as impurities or precipitates at the end opening (R in FIG. 9).
It is highly possible that the particles will fit in and be completely blocked, but in the case of a passage with a substantially triangular cross-sectional shape, the crossover (distance between the facing inner walls) is small, so the particles do not completely fall into the opening. , A small gap remains. Therefore, clogging is unlikely to occur and the contents can be ejected to the end.

When at least four cores having a circular cross section are packed and packed so as to be in close contact with each other and filled in a continuous gap passage, the cores have a circular cross section, so that three cores are formed. The materials come into contact with each other, and a substantially triangular gap is formed therebetween. The gap extends continuously along the core material. That is, if the cores are parallel to each other, they extend straight, and if they are twisted to each other, they extend in a twisted state.

Since the sectional shape is substantially triangular,
Since the peripheral length with respect to the above-mentioned cross-sectional area is long and therefore the flow path resistance is large, there is an advantage that the cross-sectional area may be large. Further, since it has a substantially triangular shape, it is difficult for fine particles to fall into the opening. Moreover, since at least four core members are bundled, two or more gap passages are formed. Therefore, even if one of them is clogged, it can be ejected from another gap passage.

[0012]

The aerosol device of the present invention will now be described with reference to the drawings. FIG. 1 is a perspective view of a main part showing an embodiment of a flow rate suppressing member to be inserted into a passage of an aerosol device according to the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG.

As shown in FIG. 2, the flow rate suppressing member 1 of FIG. 1 has a central core member 2a and six core members 2b having a diameter substantially equal to that of the central core member 2a as a bundle of hexagonal core members 2. The outer cover 3 is covered with the outer cover 3 and is in the form of an electric cabtire cable. This can be used as it is as a dip tube, or it can be cut into short pieces and inserted into a normal dip tube or a nozzle, a stem or the like. In this case, the entire dip tube or the inserted portion serves as the flow rate suppressing portion.

The six outer core members 2b are normally abutted around the center core member 2a so as to draw a loose spiral as shown in FIG. 1 in order to secure the overall flexibility. However, they may be parallel.

As the material of the core material 2, a wire made of a synthetic resin, a metal wire or a metal wire coated with a synthetic resin, which is not attacked by the fluid to be flowed and does not dissolve in the fluid, is used. Further, in order to make it easy to handle, it is preferable to have a suitable flexibility. When a synthetic resin core material is used, some of the core materials 2 may be metal wires or synthetic resin-coated metal wires in order to provide shape stability.

The outer cover 3 is usually made of synthetic resin. This can be formed in a tubular shape in advance, but it is preferable to extrude it on the bundled core material 2. As a result, a plurality of spiral or linear grooves 4 matching the surface shape of the core material 2 are formed on the inner surface of the outer skin 3, the adhesion and the integrity of the outer skin 3 and the core material 2 are increased, and the handling is easy. become. However, when the flow rate suppressing portion is provided in the valve housing, the stem or the nozzle, only the core material 2 may be loaded without providing the outer cover 3.

In the flow rate suppressing member 1 thus constructed, as shown in FIG. 2, six triangular gaps 5 are formed between the core members 2. The gap 5 between them is the core material 2.
Along which the fluid passes. In the case of such a triangular cross section, as shown in FIG. 3, since the passage S of the opening of the gap 5 is small,
The insoluble particles R do not fall into the openings. That is, in the case of the conventional circular orifice 62a as shown in FIG. 9, there is a problem that the particles R fall into the opening of the orifice 62a and clog the orifice 62a, but in the case of the triangular gap 5 in the present invention. The particles R do not fall, and the flow path is secured by the thin portion 5a in the periphery. On the contrary, for example, as shown in FIG. 4, even when the peripheral thin portion 5a is covered with the particles R, a passage for passing the liquid to the central portion is secured.

The number and arrangement of the core members 2 are not particularly limited as long as the gap 5 is a combination capable of forming two or more positions. However, the number of the core members 2 is set to 7 as shown in FIG. 2 or further around it as shown in FIG. Twelve cores 2c are placed and the whole is 1
If the number is nine, it is preferable because the outer cover 3 can be easily formed into a circular shape and can be fitted into a passage having a circular cross section.

For example, as shown in FIG. 6, the flow rate suppressing member 1 can be used by connecting itself to the lower end of the valve housing 8 of the aerosol valve 6 as a dip tube 13. In addition to being incorporated as it is as a dip tube, with or without the outer skin 3, for example, in the middle of the stem 7 (Y1), in the passage of the valve housing 8 (Y2) or in the passage of the push button 9 (Y3), or normally. In the middle of the dip tube (Y
The usage such as inserting into 4) is also possible.

Push button 9 of the aerosol valve 6 of FIG.
When is pressed, the hole 10 of the stem 7 is opened, and a pressure gradient is generated from the lower end to the upper end of the dip tube 13.
Thereby, the content is sprayed through the dip tube 13, and further through the valve housing 8, the stem 7 and the nozzle 11 of the push button 9. The ejection speed at that time is determined by the pressure difference between the inside and outside of the nozzle 11. The pressure difference is normally determined by the inner diameter of the nozzle 11, but in the aerosol valve 6 of FIG.
Since the flow path resistance is received at 3, the pressure has already dropped inside the nozzle 11. Therefore, even if the inner diameter of the nozzle is the same, the flow rate is reduced and the flow rate is suppressed. Further, since the flow path resistance is substantially proportional to (or has a constant functional relationship with) its length, the flow rate can be set arbitrarily by appropriately selecting the length of the core material 2 according to the contents.

Next, specific examples will be described. Examples 1 to 7 Seven core materials made of copper having a diameter of 0.3 mm were bundled as shown in FIG. 2, and a twist of 10 mm / pitch was given to the whole. Further, polyethylene was extruded and molded thereon to form an outer cover 3 having an outer diameter of 3.0 mm. Each of the obtained long flow rate control members has a length of 2
mm, 5 mm, 30 mm, cut to 2.9 mm inner diameter, 4 mm outer diameter,
It was inserted into three polyethylene hollow tubes having a length of 100 mm to obtain dip tubes of Examples 1 to 3.

Examples 4 to 6 The same as Examples 1 to 3 except that the core material has a diameter of 0.5 mm, the outer skin has a diameter of 5 mm, the hollow tube has an inner diameter of 4.8 mm and an outer diameter of 6 mm. Then, the dip tubes of Examples 4 to 6 were obtained.

Examples 7 to 19 19 aluminum cores having a diameter of 0.3 mm were bundled as shown in FIG. 5, and 40 mm / pitch twist was given to the whole. Furthermore, polyvinyl chloride is extruded and molded on it, and the outer diameter is 5 m.
An outer skin 3 of m 3 was formed. The obtained long flow rate suppressing members were cut into lengths of 2.0 mm, 3.0 mm and 5.0 mm, respectively, to obtain dip tubes of Examples 7 to 9 in the same manner as in Examples 4 to 6.

Comparative Examples 1 to 3 Three hollow polyethylene tubes having an inner diameter of 2.9 mm, an outer diameter of 4 mm and a length of 100 mm were prepared, and an outer diameter (D) of 3.0 mm as shown in FIG. , Orifice length (L) 0.
8 mm, central hole cross section 0.05 mm ² , 0.1 mm ² , 0.2 mm
The polyacetal-made plugs 12 for suppressing the flow rate of ² were packed to obtain dip tubes of Comparative Examples 1 to 3, respectively.

Each of the dip tubes is set to have a stem hole diameter
0.3 mm, valve housing pilot hole diameter 0.3 mm, button hole diameter
Liquefied petroleum gas 4.0 kg attached to a 0.3 mm injection valve
By mounting the pressure-resistant container filled with / cm ² (25 ° C.) by a conventional method, four aerosol device sample Nos. 1-4) were produced. Further, 10 talc powders each having a maximum length of 0.2 ± 0.05 mm were placed in the container as insoluble matters.

Then, the samples of these aerosol devices were used to intermittently inject, and the injection was repeated until the injection could not be performed. The results at that time are shown in Table 1.

[0027]

[Table 1]

As shown in Table 1, when the dip tubes of Examples 1 to 9 were used, all 5 samples could be jetted until the contents were exhausted. However, Comparative Examples 1 to
When the tube of No. 2 was used, there was a case in which the contents did not come out at all during use, while leaving much of the contents. Further, the tube of Comparative Example 3 having a cross-sectional area of 0.2 mm ² was relatively less clogged, but the effect of suppressing the flow rate was low.

From the above, it can be seen that the aerosol device of the present invention can be injected at an appropriate flow rate without causing clogging even when insoluble matter is mixed.

[0030]

The aerosol device of the present invention can be sprayed at an appropriate flow rate without causing clogging even when insoluble matter is mixed.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part showing an embodiment of a flow rate suppressing member according to the present invention.

2 is a cross-sectional view of the flow rate suppressing member of FIG.

FIG. 3 is an enlarged perspective view of an essential part showing an operating state of a flow rate suppressing member according to the present invention.

FIG. 4 is an enlarged end view of a main portion showing a working state of a flow rate suppressing member according to the present invention.

FIG. 5 is a cross-sectional view showing another embodiment of the flow rate suppressing member according to the present invention.

FIG. 6 is a sectional view showing an embodiment of a valve relating to the aerosol device of the present invention.

FIG. 7 is a perspective view of essential parts showing tubes of Comparative Examples 1 to 3.

FIG. 8 is a sectional view showing an example of a conventional flow control injection valve.

FIG. 9 is an enlarged perspective view of an essential part showing an example of a conventional flow rate suppressing member.

[Explanation of symbols]

1 tube 2 core material 3 outer skin 5 gap 6 Aerosol valve

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-55-88870 (JP, A) Real-open Sho-54-53729 (JP, U) Actual-open Sho-53-149911 (JP, U) Actual-open Sho 61- 43799 (JP, U) Actually open 4-13586 (JP, U) Actually open 62-122030 (JP, U) Actually open 5-80552 (JP, U) Actually public 57-11022 (JP, Y1) Actual Public Sho 51-13917 (JP, Y2) Actual Public Sho 51-11981 (JP, Y2) Actual Public Sho 58-47970 (JP, Y2) Special Table 8-507278 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B65D 83/44 B05B 9/04 B05B 11/00 101

Claims (5)

(57) [Claims] 1. An aerosol device comprising a passage extending from the inside of an aerosol container to the outside through an injection hole of a dip tube, a valve housing, a stem, a push button, and an injection valve for operating communication and blocking of the passage. The aerosol device, wherein the stem or the push button is provided with a flow rate suppressing unit formed of a flow path resistance of a plurality of continuous long gap passages along the longitudinal direction of the passage. 2. An aerosol device comprising a passage extending from the inside of an aerosol container to the outside through an injection hole of a dip tube, a valve housing, a stem and a push button, and an injection valve for operating communication and blocking of the passage. An aerosol device in which at least a part of the dip tube is provided with a flow rate suppressing unit formed of a flow path resistance of a plurality of continuous long gap passages along the longitudinal direction of the passage. 3. An aerosol device comprising a passage extending from the inside of the aerosol container to the outside through a dip tube, a valve housing, a stem, an injection hole of a push button, and an injection valve for operating communication and blocking of the passage. An aerosol device, which is provided below a prepared hole of the valve housing, along a longitudinal direction of the passage, and which is provided with a flow rate suppressing portion including flow passage resistances of a plurality of continuous long gap passages. 4. The aerosol device according to claim 1, wherein the continuous long gap passages each have a substantially triangular cross section. 5. The aerosol device according to claim 4, wherein the continuous gap passage is a gap formed by bundling and filling at least four core members having a circular cross section so as to be in close contact with each other.