JP2002337962A - Spray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize spraying of a small amount. SOLUTION: In the spray for spraying a liquid 2 enclosed in a container 1 to the outside via a spray valve 10 provided at a container opening, a dip tube 20 for leading the liquid 2 enclosed in the container 1 to the outside is equipped therein with a porous film P for limiting an amount of a passing fluid to cause the fluid to be led through the film P.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an injection device applied to an aerosol container or a fuel gas container.

[0002]

2. Description of the Related Art For example, an injection device applied to an aerosol container includes an injection valve provided at an opening of a container, and a dip connected to a fluid inlet of the injection valve and having a lower end inserted into a liquid in the container. It has a tube and a push button with a nozzle provided as an operating actuator outside the injection valve, opens the injection valve by depressing the push button, and pushes the contents taken from the dip tube into the nozzle of the push button. It is configured to inject from the outside.

[0003] In the injection valve in this case, when the stem is pushed down by a push button, the stem rubber is deformed to open a lateral hole of the stem, and the contents taken in the valve housing are passed through the lateral hole into the stem. Those that lead to the outlet hole are often used.

[0004]

In the case of aerosol containers such as fragrances, deodorants, and insect repellents, there is a strong demand for a method of continuously jetting a small amount of aerosol containers. Since only the flow path is narrowed by the deformation of the stem rubber when pressing down,
There was a problem that a very small amount of injection could not be performed.

The present invention has been made in view of the above circumstances, and has as its object to provide an injection device capable of realizing a small amount of injection by adding a simple configuration.

[0006]

According to a first aspect of the present invention, there is provided an ejecting apparatus for ejecting a fluid sealed in a container to an outside by an ejection valve provided at an opening of the container. The flow path is characterized by interposing a porous membrane that restricts the amount of fluid passing therethrough.

In this injection device, the flow rate of the fluid is restricted by the flow of the fluid through the fine pores of the porous membrane. Can be.

According to a second aspect of the present invention, in the first aspect, a liquid as an injection fluid is sealed in the container, and the dip is inserted into the liquid in the container by being connected to a fluid inlet of the injection valve. The porous membrane is interposed in a tube.

In this injection device, since the porous film is interposed in the dip tube inserted into the liquid in the container, it is not necessary to make a special change to the structurally complicated injection valve, and it is easy to realize. is there.

A third aspect of the present invention is characterized in that, in the first aspect, the porous film is interposed in a flow path in the injection valve.

In this injection device, since the porous film is interposed in the flow path in the injection valve, a small amount of injection can be realized by previously incorporating the porous film in the assembly process of the injection valve. .

According to a fourth aspect of the present invention, in the first aspect, the porous membrane is interposed in a flow path in an operation actuator provided outside the injection valve.

In this injection device, since the porous membrane is interposed in the flow path in the operation actuator, it is not necessary to make a special change to the injection valve which is structurally complicated, and it is easy to realize.

According to a fifth aspect of the present invention, in the third or fourth aspect, a liquefied gas as an injection fluid is sealed in the container, and a fluid inlet of the injection valve faces a gas phase in the container. It is characterized by being open.

In this injection device, a liquefied gas sealed in a container is directly injected to the outside. Since a porous film is interposed in a flow path for leading the gas to the outside, a small amount of gas can be injected. It becomes possible.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of the injection device of the first embodiment applied to an aerosol container. In FIG.
1 is a container (can), 2 and 3 are a liquid (including a liquefied gas) and a gas sealed in the container. A mounting cup 5 is fixed to an upper end opening of the container 1,
An injection valve 10 is provided at the center of the mounting cup 5.

The injection valve 10 is provided with a valve housing 11 caulked and fixed inside the mounting cup 5,
A stem rubber 12 sandwiched between the mounting cup 5 and the valve housing 11, a stem 13 inserted into a central hole of the stem rubber 12, and a valve housing 1;
The valve housing 11 includes a valve spring 14 for urging the stem 13 upward, and a spring receiving member 15 provided in the valve housing 11.

At a lower end of the valve housing 11, a fluid inlet 16 communicating with an internal space 18 of the valve housing 11 is provided.
The fluid inlet 16 is connected to an upper end of a dip tube 20 having a lower end inserted into the liquid 2. The dip tube 20 includes a tube main body 21 and
And a suction port housing 21 fixed to the lower end thereof.
The porous membrane P for limiting the amount of fluid introduced into the dip tube 20 is set in a state where the porous membrane P is held down by a cylindrical membrane holder 23. The porous film P is made of, for example, a sheet of tetrafluoride resin or the like.

At the center of the stem 13, there is formed a leading hole 13c which stops from the upper end face.
c, a horizontal hole 1 drilled from the peripheral surface of the stem 13 in the radial direction.
3b is in communication. The lateral hole 13b is open to a constricted portion 13e secured between the large diameter portion 13d at the lower end of the stem 13 and the bulging portion 13a on the upper side, and the inner peripheral surface of the stem rubber 12 is not used when not used. When the stem rubber 12 is deformed by pushing down the stem 13 during use, the stem rubber 12 is deformed and opened, and communicates with the internal space 18 of the valve housing 11 to serve to guide the contents out. Fulfill.

In this jetting device, when the stem 13 is pushed down, the liquid (content) 2 sealed in the container 1 is turned into the dip tube 20 by the gas pressure in the container 1.
And is taken into the valve housing 11 through the lateral hole 13b of the opened stem 13 and ejected to the outside through the outlet hole 13c.

At this time, since the porous membrane P is attached to the suction port housing 21 at the lower end of the dip tube 20, the fluid flows into the dip tube 20 through the fine holes of the porous membrane P, and the amount of the fluid passing therethrough. Is limited by the porous membrane P.

Therefore, the injection amount can be restricted to a much smaller amount than the adjustment level of the injection amount by restricting the opening of the horizontal hole 13b. Further, in this embodiment, since the porous membrane P for realizing a small amount of injection is attached to the dip tube 20, it is not necessary to make a special change different from the conventional one to the injection valve 10 having a complicated structure. It is easy to realize. In the case where a small amount of the content (such as the fragrance) is continuously jetted, a means for continuously holding the depressed state of the stem 13 is provided.

FIG. 2 is a sectional view of the injection device of the second embodiment. This injection device is characterized in that the above-described porous film P is interposed not in the dip tube 20 but in the internal flow path of the injection valve 10B. The porous membrane P is disposed in a flow path portion from the fluid inlet 16 of the valve housing 11 to the internal space 18 and has a disc-shaped membrane retainer 15 having a center hole also serving as a spring receiving member.
B holds in place.

The fluid that has passed through the dip tube 20 passes through the porous membrane P, and enters the internal space 18 of the valve housing 11 through the small hole of the membrane retainer 15B. Other configurations are the same as those of the injection device of FIG. 1, and therefore, the same reference numerals are given and the description is omitted.

By arranging the porous film P in the valve housing 11 of the injection valve 10B as described above, a small amount of injection can be performed as described above.

FIG. 3 is a schematic side view of the injection device according to the third embodiment. This injection device is not a dip tube or an injection valve, but an opening 32 of a nozzle 31 of a push button (operation actuator) 30 provided on an upper portion of the stem 13 for pushing down the stem 13 of the injection valve.
In addition, a porous film P is attached to the film and held by a cylindrical film retainer 33 so as not to fall off. Note that the nozzle 31 communicates with the outlet hole of the stem 13.

In this case, too, there is an advantage that the same minute injection as described above can be realized, and it is easy to realize because there is no need to add a special change to a structurally complicated injection valve.

FIG. 4 is a sectional view of an injection device (gas torch or the like) according to a fourth embodiment applied to a fuel gas container instead of an aerosol container. In this case, inside the container 1
A liquefied gas is sealed as an injection fluid, and a fluid introduction port 46 formed at the bottom of the housing 41 of the injection valve 40 is provided.
Are open facing the phase of the gas 3 in the container 1.

In this injection device, a porous film P is arranged at the inner bottom of the housing 41 of the injection valve 40, and is held in a fixed position by a disk-shaped film holder 45 having a center hole also serving as a spring receiving member. The fluid flowing from the fluid introduction port 46 passes through the porous membrane P, and
1 into the internal space 48. Therefore, in this injector, the liquid level of the liquefied gas is reduced by using the fuel gas container, for example, by inverting it.
Even if the liquefied gas is in contact with zero, the liquefied gas passes through the porous membrane P, so that it is reliably vaporized and injected. In addition, FIG.
The same components as those of the injection valve of FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted.

In this injection device, since the porous film P is incorporated in the housing 41 of the injection valve 40, a small amount of the liquefied gas sealed in the container 1 can be directly injected to the outside. When this fuel gas container is used, for example, the injection valve 40 is opened while the stem 13 is held down by screwing and connecting a torch portion (not shown) to the screw portion 5A of the mounting cup 5, for example. Then, by opening the hand valve provided in the torch portion, a small amount of gas can be injected.

[0031]

As described above, according to the first aspect of the present invention, the minute amount injection can be easily realized by interposing the porous film in the flow path.

According to the second aspect of the present invention, since the porous film is interposed in the dip tube, it is not necessary to make a special change to the injection valve.

According to the third aspect of the present invention, since the porous film is interposed in the flow path in the injection valve, it can be put to practical use as an injection valve for micro-injection.

According to the fourth aspect of the present invention, since the porous film is interposed in the flow path in the actuator for operating the injection valve, it is not necessary to make a special change to the injection valve.

According to the fifth aspect of the present invention, it is possible to jet a small amount of liquefied gas.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a first embodiment of the present invention.

FIG. 2 is a side sectional view of a second embodiment of the present invention.

FIG. 3 is a side sectional view of a third embodiment of the present invention.

FIG. 4 is a side sectional view of a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 2 Liquid (fluid) 3 Gas (fluid) 10, 40 Injection valve 16, 46 Fluid inlet 20 Dip tube 30 Push button (operation actuator) P Porous membrane

Continued on front page F term (reference) 3E014 PA01 PB01 PB07 PD01 PE11 PF10 4F033 RA02 RB04 RC11 RC24

Claims (5)

[Claims] An injection device for injecting a fluid sealed in a container to an outside by an injection valve provided in an opening of a container, wherein a passage amount of the fluid is set to a flow path for leading the fluid sealed in the container to the outside. An injection device characterized by interposing a restrictive porous membrane. 2. A liquid as an injection fluid is sealed in the container, and the porous film is interposed in a dip tube connected to a fluid inlet of the injection valve and inserted into the liquid in the container. The injection device according to claim 1, wherein: 3. The injection device according to claim 1, wherein the porous film is interposed in a flow path in the injection valve. 4. The injection device according to claim 1, wherein the porous film is interposed in a flow path in an operation actuator provided outside the injection valve. 5. A liquefied gas as an injection fluid is sealed in the container, and a fluid inlet of the injection valve is open to a gas phase in the container. Or the injection device according to 4.