JPS6190767A - Atomizing nozzle head for squeezing container - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a spray nozzle head for a squeezing container equipped with a riser tube having a constant outer diameter extending from the neck of the container to the inside of the spray nozzle head. . PRIOR ART AND PROBLEMS SOLVED BY THE INVENTION A variety of atomizing or atomizing devices for manual squeeze containers are commercially available. Typically, these devices consist of a spray nozzle, also called an atomizer nozzle, and a riser tube immersed in a container.

The nozzle or spray opening in the nozzle head is closed by a screw cap or hinged cover when the container is not in use. For technical manufacturing reasons or requirements, the nozzle atomizing head and the riser tube have to be made as separate parts and from different synthetic materials. These separate parts will need to be assembled later. When installing a liquid riser pipe inside the spray nozzle head,
It is necessary to precisely follow the regulations for the mounting seat. 2. If there is even a slight inaccuracy in the relative position of the assembled parts, the desired spray or atomizing function will not be achieved, or at least the liquid will be ejected from the atomizing opening instead of the desired fine mist. Otherwise, there is a possibility that the product will be rejected due to excessively large droplets coming out.

The formation of overly large droplets, as well as the formation of liquid jets, is particularly undesirable for deodorants and the like.

This is because the finer the particles that are dispersed or made into fine particles, the more effective the deodorizing effect will be. It must therefore be ensured that the active substance is evaporated into a fine atomized mist in which the droplets are as small as possible.

The spray nozzle head cannot be modified once the nine parts are assembled, so it must function reliably. This type of mass-produced product is assembled by a robot, which attaches two assembled spray heads to the neck of the container.

Once installed, it is not possible to remove and modify the atomizer or vaporizer head from the container-like part.

(Function) In view of the above, two objects of the present invention are to achieve the following objects singly or in combination. Namely.

To provide an atomizing or vaporizing nozzle head capable of reliably vaporizing or atomizing active ingredient substances in the form of a particularly fine mist.

The nozzle head has a structure that allows it to be mass-produced at an economical price and does not require any modification after the parts are assembled.

The nozzle head is constructed to function accurately and reliably and to safely prevent liquid from dripping even if the container is knocked over;

After removing the nozzle opening lid during the first use, it is to avoid using another lid for the nozzle head.

(Means and Effects for Solving the Problems) According to the present invention, a squeezing container is used with a liquid riser tube extending into the squeezing container and extending from the container-like part into the vaporizing or atomizing nozzle head. , an atomizer or vaporizer head is provided that produces a paper or spray of liquid. This head includes an atomizing opening or nozzle near the top of the riser tube.

A sleeve surrounds the riser tube in a spaced manner in a radial direction, and the sleeve forms an annular gap between the outer surface of the riser tube and the inner surface of the sleeve.

This annular gap provides a through flow path between the interior of the container and the atomizing opening or nozzle. The width of the radial space or annular gap is less than the axial space between the upper end or head end of the riser tube and the inner surface of the head plate forming part of the atomizing or vaporizing head. .

The atomizing opening or nozzle is.

Located within this head plate.

By the annular gap being relatively narrow.

The air in the annular gap is accelerated by the overpressure created within the container when it is manually squeezed.

Thereby, the air in the annular gap is directed towards the nozzle opening with increasing velocity. This air velocity vaporizes the liquid that exits the riser tube and enters the syringe-style atomizing nozzle or orifice into a very fine mist. As already mentioned, such fine atomization or vaporization.

Particularly suitable for substances that have an odor-neutralizing effect.

Furthermore, if the precisely predefined space between the head end of the riser tube and the inner surface of the head plate is not maintained accurately due to assembly and manufacturing inaccuracies, The nozzle does not experience fine atomization or loss of vaporization as often occurs with conventional nozzles. In the case of the nozzle of the invention.

By delivering a somewhat smaller amount of liquid per unit air volume, the necessary fine atomization or vaporization is achieved.

A narrow annular gap arranged in front of the nozzle opening has the combined feature of preventing liquid from being expelled through the nozzle opening if the container is inadvertently turned over. Without this narrow annular gap, liquid could be released and drip from the nozzle. The air in this narrow annular gap can prevent such release, since the liquid must first displace the air in this narrow annular gap. Unless this air displacement takes place, the liquid in the container will not be shaken and the liquid level will be below the nozzle opening.

Slow capillary action does not cause dripping.

In order to ensure the necessary air cushion for the atomization or vaporization function within the container, the container, which usually has an oval cross section, is filled with liquid to just below half of the total volume of the container. This further increases the safety for 9 drops. Thanks to this drip-free characteristic of the container.

After removal of the closure nipple for initial use, the spray nozzle or opening does not need to be fitted with a lid, and thus a separate cap or hinged lid is not required. In this way, such a container is always ready for use, without having to open or remove the lid or cap, and without having to close the atomizing nozzle opening again after using the nozzle.

(Example)
.

For a clearer understanding of the invention, examples are given and are described below with reference to the accompanying drawings, in which: FIG.

FIG. 1 is a longitudinal cross-sectional view of the throat of a misting pen nozzle according to the present invention.

FIG. 2 is a sectional view taken along cutting line nm in FIG. 1.

FIG. 3 is a side view of a combination of a squeeze container and a nozzle head according to the present invention.

Please refer to FIGS. 1 and 2.1. Misting nozzle head 1
1 The atomizing nozzle is manufactured as an integral single piece of synthetic material or metal. The structure is such that it can be attached to the neck portion 12' of the finished squeeze container 24.

The misting nozzle head 1 has a front end 3 having a one-cone structure.
It also has a skirt-shaped rear end portion 20 into which the container-like portion 12 is fitted. A flexible liquid riser tube 4, also made of synthetic material, is placed inside the atomizing nozzle head 1. The riser tube 4 may be a tubular member or a jacket, which is closed over its entire length except for its open end. In addition, the boundary liquid tube 4 has a hole with a constant diameter over the entire length of the liquid riser tube 4. In other words, there is nothing in the passage inside the riser tube 4 that restricts the flow;
Also, the tube wall has no lateral openings. The upper end of the liquid riser pipe 4 is arranged inside the spray nozzle head 1 by a plurality of blades 6 arranged around the liquid riser pipe 4. Preferably.

Three such blades 6 are arranged as shown most clearly in FIG. Preferably, the nine vanes 6 are evenly distributed around the periphery of the riser tube 4, and the tube 4 is held in place by a frictional fit between the radially inner rib ends 6' of the nine vanes 6 and the tube 4. do. The vanes 6 are supported by the inner wall 7 of the head 1 at their radially outer edges.

The permanent connection between the container-like part 12' and the skirt 20 and 14' of the head 1 consists of a bulge 8 projecting radially outward from the container-like part 12' and a radially inward connection from the inner surface 23 of the skirt 20. This is done by the engagement of the annular rib 22 that protrudes from. The bulging portion 8 is.

Having outwardly and downwardly flared surfaces allows the elastically deflecting skirt 20 to be compressed axially over the bulge 8 until the ribs 22 are snugly seated behind or below the bulge 8. It can be so. This kind of joining.

It is not intended that the head 1 be removed again after it has been attached to the container-like part 12. But if you apply enough force,
This connection can be broken and the head 1 can be removed from the container-like part 12'.

A sleeve 10 surrounds the upper end of the different liquid pipe 4, and this sleeve 10 forms a part of the front end 3. More specifically, the sleeve 10 forms a part of the front end 3 of the spray nozzle 1 from the head play eye 8 to the inner side. It sticks out. According to the invention, the sleeve 10 has a hole with an inner diameter larger than the outer diameter of the foreign liquid tube 4 and defines an annular gap 11 with a radial width "b", as best seen in FIG. Form. sleeve 10
The axial length of is.

This corresponds to approximately 1.5 to 2 times the outer diameter of the different liquid tube 4. As already mentioned, the vanes 6 form ribs 6' over the sleeve 10 so that the foreign fluid tube 4 is properly retained within the sleeve 10 by a friction fit of the ribs 6'.

In addition.

By extending the vanes 6 far below the sleeve 10, the foreign liquid tube 4 is held in place along an axial length that is greater than the axial length of the sleeve 10.

The front surface of the different liquid tube 4, that is, the head end 5.

Intermediate space 12 with axial height or gap “a”
from the inner surface of the head plate 18. By providing at least one spacing element 13, preferably three spacing elements with a narrow width in the circumferential direction, in the intermediate space 12, the gap ``aJ'' is suitably and precisely at a predetermined value. The atomizer or nozzle opening 14 is preferably arranged in the center of the head plate 18 and aligned with the inner diameter of the different liquid tube 4. Approximately matches the inner diameter or caliber of the .Until the first use,
The atomizer or nozzle opening 14 is closed with a detachable nipple 15, which is removed for first use, for example by cutting, but thereafter
Since the nozzle opening 14 is not covered during the use of the squeeze container, the interior space of the container is always in communication with the atmosphere.

A sharp corner 2 forms a transition between the inner surface of the head plate 18 and the nozzle opening 14. Such a sharp corner 2 is
It facilitates or promotes the formation of air turbulence, which in turn enhances the vaporization effect. Annular gap according to the invention "
The width of “b” is the width between the end surface 5 of the different liquid tube 4 and the head plate 18.
is smaller than the axial gap r aJ between the inner surface and the inner surface.

The diameter of the nozzle opening 14 will vary depending on the desired discharge flow rate and other factors such as viscosity, desired droplet size, and air velocity. For this purpose, nozzle opening 1
A suitable diameter for 4 is within the range of 0.6 mm to 1.0 mm, preferably about 0.8 mm. For example, the radial gap width "b" may be approximately 0.3 mm and the axial gap r B J may be approximately 0.6 mm. In one embodiment, the outer diameter of the different liquid tube 4 is 2.4 mm, and the inner diameter is 1.2 mm.

The inner diameter of the sleeve 10 is 3 mm + and the axial gap r
aJ was set to 0.6 mm, and the length of the sleeve 10 in the axial direction was set to 4 mm.

FIG. 3 shows a squeezing container 24 to which the atomizing head 1 described above is attached. The different liquid pipe 4 passes inside the container and reaches the bottom 20' of the container.

The vertical central axis "yj" of the misting nozzle head 1 is the third
As shown, it is angled relative to the central longitudinal axis "x" of the container 24. This feature allows the user to spray sideways and upwards from the user's side.

The atomizing nozzle head 1 according to the invention operates as follows. When the container is held upright and the pressure inside the container is increased by manually squeezing a container filled with liquid to just below 1/2 of its capacity, the viscosity of the liquid will rise if the viscosity is low. The pressure acts on the surface of the liquid in the container and pushes the liquid in the riser tube 4 immersed in the liquid upward. In addition, the air within the annular gap 11 is compressed outwardly from the interior of the container 24. Since the annular gap 11 is relatively narrow, as mentioned above, the airflow is considerably accelerated within the space 11, and the resulting relatively high air velocity is
Liquid is entrained from the riser tube 4 by the syringe effect. Due to the turbulent flow of air in the intermediate space 12, the entrained liquid is vaporized or completely atomized in the area of the atomizing opening 14. Accelerating the air velocity to as high a value as possible is essential for the generation of a fine spray and atomized vaporization, thereby avoiding the formation of relatively large droplets.

In this connection, good results are obtained when the flow cross-sectional area of the annular gap 11 through which the air flows corresponds to at least 1.2 and at most 1.8 times the cross-sectional area of the flow through the intermediate space 12 immediately in front of the nozzle opening 14. It turned out that it was possible to obtain More specifically, gap r3J defines a cylindrical gap that is substantially axially aligned with atomizer opening 14. This cylindrical gap forms a flow path with the first flow through surface. The radial gap rb, forms an air flow space having a second flow through surface, the second flow through surface being between 1.2 and 1.8 times larger than the aforementioned first flow through surface. Larger within double range.

Another advantage of the atomizing nozzle according to the invention is.

The head is relatively insensitive to manufacturing tolerances. This applies not only to the dimensions of the head 1 itself and the positioning of the liquid elevating tube 4, but also to the dimensions of the liquid elevating tube 4. Even if the liquid riser tube 4 is not completely inserted into the head, the liquid riser tube does not reach the spacing member 13, or the liquid riser tube 4 has slipped slightly from the spacing member 13. However, you can still get a fine mist. If the liquid riser tube 4 is not in complete contact with the spacer 13.

The amount of misting produced is simply reduced.

The atomizing or vaporizing action is not completely lost. This advantage is not available with conventional nozzle heads that often lose the ability to produce fine vaporization if tolerances are not met.

゛ If the container 24 is inadvertently turned over, the air in the annular gap 11 will not escape all at once.

Furthermore, since the liquid fills the gap 11 slowly due to capillary action, the head 1 of the invention is practically drip-proof. This feature of the invention ensures that even after disconnecting the nipple 15, there is no agitation of the liquid caused by turning the container upside down (the liquid simply flows back out of the nozzle area and into the interior of the container). , there is no need to attach a cover or a hinged lid. This property also allows the container to be ready for use without any preliminary steps such as removing the cap or opening the lid. Similarly, There is no need to reclose the container after it has been used to dispense or atomize the contents of the container, such as the active ingredient material in the form of a deodorant or the like.

Although the invention has been described with reference to specific embodiments,
It is intended to cover all modifications and equivalents recited in the appended claims.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a spray nozzle head according to the present invention, FIG. 2 is a cross-sectional view taken along cutting line n-n in FIG. 1, and FIG. It is a side view of a head combination. 1...Mist spray nozzle head, 4...Liquid riser pipe, 6...
・Blade, 6'... Rib end, 7... Inner wall, 8...
bulging portion, 10... sleeve, 11... annular gap, 1
2...Intermediate space part, 12゛...Cervical part, I3...
- Spacing member, 14... Nozzle opening, 15...
Nipple, 18... Head plate, 20... Rear end portion, 22... Annular rib, 24... Squeezing container.

Claims (12)

[Claims] (1) an atomizing nozzle head for a squeezing container having a rising tube with a constant outer diameter extending outward from the neck of the container, means for attaching the atomizing nozzle head to the neck of the container; means for retaining the upper free end of said riser tube within said atomizing nozzle head, a head plate forming part of said nozzle head, and for discharging liquid from said container in a fine mist; an atomizer opening in said head plate of said nozzle head and a sleeve extending inwardly from said head plate and surrounding said atomizer opening and said upper free end of said riser tube; wherein said retaining means holds said free end of said riser tube with a first axial gap (a) between said head plate and said free end of said riser tube. arranged, said sleeve having an inner diameter greater than said constant outer diameter of said lifter tube, such that said sleeve has a second radial gap ( b), said second radial gap (b) being smaller than said first axial gap (a) to ensure that a fine spray is formed when said container is squeezed. What to do. (2) The above-mentioned atomizing opening is located at the center of the above-mentioned head plate, and the above-mentioned holding means aligns the above-mentioned liquid riser tube with the above-mentioned atomizing opening in the central axis direction. The misting nozzle head according to item 1. (3) further affixing a detachable closure nipple to the outside of said head plate, initially covering said spray opening to obviate the need for a separate lid, said nipple securing the container; A misting nozzle head according to claim 1, which is detachable before first use. (4) said atomizing aperture has a constant diameter, said axial gap (a) substantially at said atomizing aperture diameter substantially axially disposed in said atomizing aperture; A cylindrical gap is defined in line with the part, the cylindrical gap forms a flow path having a first through-flow area, and the second gap (b) is connected to the riser tube. forming a through-flow annular gap between said inwardly extending sleeve, said annular gap having a second through-flow area, said first through-flow area being greater than said first through-flow area; 1.2 to 1.8 times the flow area
The atomizing nozzle head according to claim 1, which is twice as large. (5) The above-mentioned holding means for the above-mentioned liquid riser tube comprises a plurality of vanes distributed in the above-mentioned atomizing nozzle head and extending radially between the above-mentioned liquid riser pipe and the above-mentioned atomization nozzle head. 2. A spray nozzle head according to claim 1, wherein said vane holds said riser tube in a friction fit. (6) The misting nozzle head according to claim 5, wherein the plurality of blades include three blades uniformly distributed around the liquid riser pipe. (7) Each of said vanes has a radially inner rib, said rib being in frictional contact with said riser tube through said sleeve and said radial gap. The misting nozzle head according to item 5. (8) Claim 5, wherein the axial length of the vane is greater than the axial length of the inwardly extending sleeve, and the vane is joined to the inner surface of the atomizing nozzle head. Atomizing nozzle head as described in . (9) further comprising at least one narrow axial gap retaining member between the inner surface of the head plate and the axial free end of the riser tube; and defining an axial gap (a) of 1 and having sharp corners around the atomizing opening on the aforesaid inner surface of the aforesaid head plate to facilitate the production of a fine spray. A misting nozzle head according to scope 1. (10), wherein said riser tube comprises a wall without openings over its entire length and is open only at its ends, said riser tube further extending approximately to the inner diameter of said atomizing opening in said head plate; A misting nozzle head according to claim 1 having a correspondingly uniform inner diameter. (11) The above-mentioned second radial gap (b) is sufficiently small, and the annular gap is narrow enough to prevent liquid from unintentionally flowing out of the squeezing container when the container is tipped over. A spray nozzle head according to claim 1, which is formed around a liquid pipe. (12) A combination of a squeezing container and a nozzle atomizing head, the container having a neck, and means for fixing the nozzle atomizing head to the neck of the container so that the neck does not separate from the neck. and the aforesaid nozzle atomizer head is without a lid and has an atomizer opening and a disconnectable nipple, the atomizer head having a atomizer opening as described above and a separable nipple until the aforesaid atomizer head is disconnected upon first use of the aforesaid squeegee container. furthermore, a liquid riser tube in said squeezing container is connected to said nozzle atomizing head such that squeezing said container forces liquid and air as a fine mist from said atomizing opening. thing.