WO1997024161A1

WO1997024161A1 - High-pressure gas jetting device

Info

Publication number: WO1997024161A1
Application number: PCT/JP1997/000003
Authority: WO
Inventors: Hidetada Kondo
Original assignee: Kondo Corporation
Priority date: 1995-12-28
Filing date: 1997-01-06
Publication date: 1997-07-10
Also published as: JPH09182809A; EP0815903A1; EP0815903A4

Abstract

A high-pressure gas jetting device comprising a vessel body (2) storing a gas tank (1) charged with a high-pressure carbon dioxide, a cap (3) screwed onto the vessel body (2), and a needle (11c) provided in the cap (3) and adapted to be axially moved upon relative rotation of the vessel body (2) and the cap (3) to pierce a sealing plate of the gas tank (1). Carbon dioxide within the gas tank (1) is permitted to be jetted from a tip end hole (10) of the cap (3) through a through hole (11d) formed axially of the needle (11c).

Description

Akira Itoda High-pressure gas injection device Technical field of the invention

The present invention relates to a high-pressure gas injection device, for example, and more particularly, to a high-pressure gas injection device suitable for use in a fire extinguisher or the like that is arranged in a general household or mounted on an automobile. Background of the Invention

Conventionally known fire extinguishers generally have a container filled with a dry powder of baking soda and a small carbon dioxide cylinder. In use, the sealing plate of the cylinder is broken by removing the retaining pin and grasping the handle, and the baking soda powder is injected from the nozzle by the pressure of carbon dioxide.

However, not only is the container itself large, but also the handle is provided at the top of the container, and the hose hangs down from the top to the side of the container. It was difficult to place it on a car or mount it on a car. In addition, there was also a problem that this type of fire extinguisher had a poor appearance just because it was colored red.

On the other hand, small fire extinguishers suitable for mounting on vehicles have been developed. This fire extinguisher is large enough to be portable with one hand, and has a gas tank in which high-pressure digestion gas is sealed beforehand. The bottom of the container is relatively hard to use when used. The gas tank moves upward toward the needle-like member inside by striking the gas tank, and the needle-like member pierces the sealing plate of the gas tank, thereby injecting digestive gas from the head of the container. However, in the case of spraying gas from the top of the tip by hitting the bottom of the container in this way, after finding a fire and holding a fire extinguisher, select an appropriate site to hit the container. Need to be Since it is necessary to change the direction of the container by directing the injected gas to the fire place after the gas is injected, loss of fire extinguishing time occurs, and it is possible to extinguish the entire amount of gas sealed in the gas tank for fire extinguishing. There is a problem that cannot be done.

In addition, there are individual differences in the power to strike the container, and the hardness of the area to be beaten is not uniform. In addition, it is unlikely that a smashing site of appropriate hardness should be calmly selected in the event of a fire, and the container slammed into the site with an appropriate force. Therefore, it is difficult to design such that the digestive gas is injected even if the container is slammed under all conditions. For this reason, it is necessary for some users to perform the smashing operation multiple times, and in some cases, a situation in which the digestive gas is not injected may occur. Furthermore, it is difficult to predict when the gas will be injected depending on how the container is hit, and it is expected that the gas will be injected toward the user's face because the gas is injected from the top of the container. When the gas is sprayed, the user may be surprised and release the container.

Such issues can be a problem not only in small fire extinguishers, but also in other high-pressure gas injection devices.

The present invention has been made to solve the above-described problems, and can inject gas in a state in which an injection direction is directed toward a target without hitting a container, and the injection operation is affected by usage conditions. It is an object of the present invention to provide a high-pressure gas injection device capable of predicting the gas injection timing to some extent without being performed. Summary of the Invention

In order to achieve the above object, the invention according to claim 1 includes a first cylindrical member in which a gas tank in which high-pressure gas is sealed is housed, and a first cylindrical member which is screw-connected to the first cylindrical member. A second cylindrical member that is rotatable relative to each other, and a needle that is provided in the second cylindrical member and moves in the axial direction by the relative rotation of the first and second cylindrical members to break through the sealing plate of the gas tank. And a shaped member.

The invention according to claim 2 is characterized in that high-pressure gas in a gas tank is jetted from a distal end hole of the second cylindrical member through a through hole formed in an axial direction of the needle-shaped member. The invention according to claim 3 is characterized in that the high-pressure gas is an incombustible gas such as carbon dioxide, nitrogen, or an inert gas.

Invention, those ^five order, characterized in that the relative rotation angle of the first and second tubular members acicular member is configured to pierce the sealing plate of the gas tank within 1 8 0 degree according to claim 4 You.

The invention according to claim 5 is characterized in that at least one groove parallel to the rotation axis of relative rotation is formed on the outer surface of the first and second cylindrical members, and each groove is aligned on a straight line. The present invention is characterized in that a stopper is provided that is detachably engaged across the two grooves and prevents relative rotation of the two cylindrical members.

The invention according to claim 6 is characterized in that the first or second tubular member is subjected to an antistatic treatment.

The invention according to claim 7 is characterized in that the tip of the needle-like member has a frustoconical shape. The present invention basically provides a first cylindrical member accommodating a gas tank in which high-pressure gas is sealed, and a second cylindrical member screw-coupled to the first cylindrical member and rotatable relative to the first cylindrical member. And a needle-like member provided in the second tubular member and axially moved by the relative rotation of the first and second tubular members to break through the sealing plate of the gas tank. And includes various forms. According to this invention, the needle-shaped member breaks through the sealing plate of the gas tank by relatively rotating the first and second cylindrical members, and the high-pressure gas is injected.

It is preferable that high-pressure gas in a gas tank is injected from a tip end hole of the second cylindrical member through a through hole formed in an axial direction of the needle-shaped member. According to the present invention, the first and second cylindrical members are respectively grasped, and the needle members are simply rotated relative to each other with the tip holes of the second cylindrical members facing the target. Since the injection gas is pierced through the sealing plate of the gas tank and is injected from the tip hole of the second cylindrical member through the through hole of the needle-shaped member, the injection gas can be reliably directed to the target.

It is preferable to inject high-pressure gas through the through-hole formed in the needle-shaped member as described above, but it is preferable that the high-pressure gas be injected into the side of the first or second cylindrical member. Gas can also be injected from the injection hole provided. In this case, the injection force of the injected gas can be adjusted by providing an adjusting valve in the gas passage.

The first and second cylindrical members can be arbitrarily selected in a cross-sectional shape such as a circle, a triangle, a rectangle, other polygons, a rhombus, and a star, except for a threaded portion. It can be manufactured by selecting various materials such as resin, reinforced plastics, metals such as aluminum and alloys, and wood. One or more end holes may be formed in the second cylindrical member. When a plurality of tip holes are formed, one of them can be arranged at the center and the other can be arranged around this hole. As a mechanism for relatively rotating the first cylindrical member and the second cylindrical member, for example, a single bistor-type mechanism is applied, and one of the first and second cylindrical members is mounted on a base. It is also possible to provide a power transmission mechanism in which one is fixed and the other rotates in conjunction with the triggering operation.

When the high-pressure gas is used as a fire extinguisher, an incombustible gas such as an inert gas such as carbon dioxide, nitrogen, and argon can be used. When used as an oxygen cylinder, oxygen can be used. Since the high-pressure gas has a low temperature, when the present invention is used as a fire extinguisher, the fire-extinguishing effect is remarkably high due to the combination of the fire-extinguishing effect and the cooling effect of the non-combustible gas. When non-combustible gas is used as the high-pressure gas, it can be used as a cleaning device that cleans dust and the like from various devices by using the injection pressure. If a high-pressure gas is mixed with an insecticide, a pesticide, or the like, it can be used for spraying the pesticide, the pesticide, or the like.

The relative rotation angles of the first and second tubular members, at which the needle-like member can break through the sealing plate of the gas tank, are as follows. It is preferable that relative rotation until injection can be performed because the time required for the fire extinguishing operation can be shortened. For this purpose, the relative rotation angle is preferably set to 180 degrees or less.

It is preferable that one or more grooves parallel to the rotation axis of the relative rotation are formed on the outer surface of the first and second cylindrical members. When a plurality of grooves are formed in the cylindrical member, a stable grip feeling can be obtained when the cylindrical member is grasped by hand, and slip when rotating relatively can be suppressed. In addition, the appearance is also excellent in design. No. If the stoppers that prevent the relative rotation of the two cylindrical members straddle both grooves in a state where the grooves of the first and second cylindrical members are aligned on a straight line, and are detachably engaged, it is unnecessary in normal times. Unintended relative rotation can be prevented. In order to obtain a stable grip feeling and improve the appearance, a rough surface processing for forming minute projections or recesses can be performed instead of or together with the grooves. It is preferable that the stopper is previously connected to the first or second tubular member by a string or the like so as not to be separated from the present device when the stopper is separated from the groove.

The first or second cylindrical member may be formed by forming the cylindrical member itself from a material that is difficult to be charged, applying a plating on the inner peripheral surface of the cylindrical member, or providing a conductor on the inner peripheral surface. It is preferable to perform such antistatic treatment. In this case, when the user holds the cylindrical member in his / her hand, it can be prevented that the cylindrical member is released due to the generation of static electricity.

It is preferable that the tip of the needle-like member has a frusto-conical shape. In this case, the needle-like member reliably breaks through the sealing plate of the gas tank by the relative rotation of the first and second cylindrical members. Can be. More preferably, it is better to form a step in the circumferential direction on the tapered surface. However, the shape of the tip of the needle-shaped member is not limited to this, and any shape such as diverting the shape of the tip of the injection needle, threading, or having a curvature can be adopted.

The needle-shaped member can have any cross-sectional shape such as circular, triangular, square or other polygonal, rhombic, or star-shaped. Any material can be selected from various materials such as ceramics.

The present invention can be applied not only to a case where the present apparatus is operated manually but also to a case where the present apparatus is automatically operated. That is, one end of a biasing means such as a mainspring is fixed inside or outside one of the first and second tubular members, and the other end is fixed to the other through a shaft which melts at a predetermined temperature. Thereby, the first and second cylindrical members can be rotated relative to each other by the urging force of the urging means and the internal high-pressure gas can be ejected when the stopper melts in the event of a fire. Such automatic high-pressure gas injection devices are used, for example, in hotel rooms, in general households, in high-vision areas, near gas tanks, ceilings of public telephones, and cashing dispensers. (CD) It can be installed on the ceiling of the machine. In addition, if such an automatic gas injection device employs non-combustible gas as high-pressure gas, it can be used as a fire extinguisher that operates by the heat of the fire by throwing it into a fire. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1A is a perspective view showing a preferred embodiment of the present invention. (B) is a longitudinal sectional view of (a).

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a sectional view showing another embodiment.

FIG. 4 is a perspective view showing still another embodiment. BEST MODE FOR CARRYING OUT THE INVENTION

FIGS. 1 (a), (b) and 2 show a normal state of an embodiment in which the high-pressure gas injection device of the present invention is applied to a small fire extinguisher. The fire extinguisher is a hollow cylindrical container body 2 (first cylinder) in which a vertically long bottle-shaped gas tank 1 (for example, manufactured by Nippon Carbon Dioxide Co., Ltd.) in which high-pressure gas carbon dioxide is sealed is housed. ) And a hollow cylindrical cap 3 (second cylindrical member) that is screwed to the front part (upper side in the figure) of the container body 2 and can rotate relative to this. I have. The gas tank 1 has an opening 4 projecting from one end in the axial direction, an opening end of which is sealed by a sealing plate (not shown), and a thread groove 5 formed on the outer peripheral surface.

Both the container body 2 and the cap 3 are made of plastic which is difficult to be charged, and have substantially the same outer diameter and the same color.

The inner end of the container body 2 is a thick inner cylinder part 6 whose central part protrudes in the axial direction, and the inner periphery of the inner cylinder part 6 is an inner screw capable of screwing the mouth part 4 of the gas tank 1. Part 7 is formed. The container body 2 can be divided into two parts (2 a, 2 b), and the gas tank 1 can be divided into two parts by screwing the mouth 4 of the gas tank 1 to the inner thread 7, so that the gas tank 1 Fixed to 2. Here, no adhesive or adhesive is interposed between the container body 2 and the gas tank 1. The fixing between the container body 2 and the gas tank 1 was performed by screwing the mouth portion 4 in this embodiment. It is also possible to form the fixing projection on the gas tank 1 and to form means for engaging with the projection on the container body 2.

On the outer periphery of the inner cylindrical portion 6, there is formed a thread groove 8 having a larger pitch than the thread pitch formed in the mouth portion 4 of the gas tank 1.The thread groove 8 is formed on the inner periphery of the cap 3 in the thread groove 8. 9 are combined. The connection between the container body 2 and the cap 3 is made between the inner end face of the cap 3 and the end face of the inner cylindrical section 6 and between the inner edge of the cap 3 and the end of the cap 3, as shown in FIGS. Almost the same gap is formed between the step portion of the container main body 2 and further tightening is possible.

A tip hole 10 penetrating the cap 3 is formed substantially at the center of the cap 3, and a concave portion 3a in which the needle bead 11 is embedded is formed on the back side of the tip hole 10. As shown in detail in FIG. 2, the needle piece 11 has a cylindrical main body 11a fitted into the concave portion 3a, and a needle 11c (needle) projecting rearward from the main body 11a. ) And a nozzle 11b projecting forward. A through-hole 1Id is formed in the needle 11c, main body 11a, and nozzle 11b in the axial direction. Have been. The tip hole 10 and the needle piece 11 are arranged coaxially, and the needle 11 c is opposed to the front of the sealing plate of the gas tank 1 (in this embodiment, the tip of the needle 11 c and the The distance from the sealing plate is almost set to 0).

In this embodiment, when the container main body 2 and the cap 3 are relatively rotated by 10 degrees in the tightening direction (the direction in which the container main body 2 and the cap 3 approach), the needle 11 c moves in the axial direction. The thread pitch of the thread grooves 8 and 9 is set so that the tip of the thread groove 8 and 9 is moved so that the tip abuts against the sealing plate of the gas tank 1 and breaks through the sealing plate when further rotated by 35 degrees.

As shown in FIG. 1 (a), grooves 12 and 13 parallel to the axial direction are formed at the front part of the container body 2 and the rear part of the cap 3 at appropriate intervals in the circumferential direction. It has been done. The grooves 12 and 13 are formed at the same pitch, and a stopper (not shown) is removably engaged across both grooves with both grooves 12 and 13 aligned in a straight line. A ring is attached to the collar.

The above small fire extinguisher is manufactured as follows. First, with the container body 2 divided into two parts, the gas tank 1 is introduced from its front opening, and the mouth 4 is After being fixed to the inner thread part 7 of the inner cylinder part 6 of the body 2 by screw connection, the two divided container bodies 2 are assembled together. Next, the cap 3 in which the needle piece 11 is embedded is screwed to the container body 2. As described above, this screw connection enables further tightening, and a small fire extinguisher is completed by such simple operations.

In order to make a screw connection that enables further tightening, for example, it is conceivable that the container body 2 and the cap 3 are previously marked and the screw connection is stopped when the two marks match. Can be Further, when the grooves formed in the container body 2 and the cap 3 are aligned on a straight line, the screw connection can be stopped. In a state where the grooves are aligned with each other, if the stopper is detachably engaged across the two grooves, careless relative rotation of the two cylindrical members in normal times can be prevented. At the time of use, it is preferable to integrate the ring with the collar so that the stopper can be easily removed. When a plurality of grooves are formed, it is needless to say that marking is preferably performed at the rotational position where the screw connection should be stopped.

The completed small fire extinguisher is installed, for example, in a car. Since a stopper is provided between the container body 2 and the cap 3, careless relative rotation in normal times is prevented. Also, since both members 2 and 3 are formed with grooves 12 and 13, the appearance is good.

Here, the operation when an engine fire occurs will be described. First, grasp the container body 2 and the cap 3 with each hand. Since both members 2 and 3 are made of plastic that is difficult to be charged, static electricity is not generated and will not be released. In this state, the needle 1 1c breaks through the sealing plate of the gas tank 1 by simply rotating the container body 2 and the cap 3 relative to the engine, with the tip hole 10 of the cap 3 facing the engine, and the injected gas flows through the needle piece 1. It is ejected from the tip hole 10 of the cap 3 through the through hole 1 1d of 1 (needle 11c, body 11a, nozzle 11b). Therefore, the injection gas can be reliably directed toward the target.

Since the container body 2 and the cap 3 are formed with a plurality of grooves 1 2 and 13, a stable grip feeling can be obtained when grasped by hand, and slippage during relative rotation can be suppressed. . Also, if the container body 2 and the cap 3 are rotated 45 degrees relative to each other, the gas will be injected, so first grasp the container body 2 and the cap 3, and then inject the gas without holding the hand. Since the relative rotation up to the maximum is possible, the time required for the fire extinguishing operation can be reduced.

Since high-pressure carbon dioxide has a low temperature, the fire-extinguishing effect is remarkably high even when the carbon dioxide is small, due to the combination of the fire-extinguishing effect and the cooling effect of the incombustible gas.

FIG. 3 shows another embodiment. In this embodiment, the cap 3 is greatly extended rearward, and the inner peripheral surface is in sliding contact with the outer peripheral surface of the container main body 2. However, this embodiment has the same effect as that of the above-described embodiment. Obtainable.

FIG. 4 shows still another embodiment. In this embodiment, the shape of the cap 3 is rounded at the tip, and the present invention can be applied to any of the embodiments shown in FIGS. 1 and 2 and the embodiment shown in FIG. it can. As described above, according to the invention of claim 1, both the first and second cylindrical members are grasped, and the two cylindrical members are held in a state in which the distal end hole of the second cylindrical member faces the target. Just by rotating the members relative to each other, the needle-like member breaks through the sealing plate of the gas tank, and the injected gas is reliably injected.

According to the second aspect of the present invention, the high-pressure gas passes through the through-hole of the needle-shaped member by rotating the two cylindrical members relative to each other with the tip end hole of the second cylindrical member facing the target. Since the injection gas is injected from the tip hole of the shape member, the injection gas can be reliably directed toward the target.

According to the invention of claim 3, it can be used as a fire extinguisher. Since the high-pressure gas has a low temperature, the fire-extinguishing effect is remarkably high due to the combination of the fire-extinguishing effect and the cooling effect of the non-combustible gas.

According to the invention of claim 4, the relative rotation from the first gripping of the two tubular members to the injection of the gas without changing their hands is possible, which shortens the time required for the fire extinguishing operation. And can be.

According to the fifth aspect of the present invention, a stable grip feeling can be obtained, and slippage during relative rotation can be suppressed. In addition, the design will also look good. Further, the stirrup can prevent inadvertent relative rotation in normal times.

According to the invention of claim 6, it is possible to prevent the user from letting go due to the action of static electricity o

According to the invention of claim 7, the needle-shaped member can reliably pierce the sealing plate of the gas tank by the relative rotation of the first and second cylindrical members.

Claims

The scope of the claims

1. A first tubular member in which a gas tank in which high-pressure gas is sealed is housed, a second tubular member screw-coupled to the first tubular member and rotatable relative to the first tubular member, A needle member provided in the second cylindrical member and moved in the axial direction by relative rotation of the first and second cylindrical members to break through the sealing plate of the gas tank. Pressurized gas injection device.

2. The high-pressure gas injection according to claim 1, wherein high-pressure gas in a gas tank is injected from a front end hole of the second cylindrical member through a through hole formed in an axial direction of the needle-shaped member. apparatus.

3. The high-pressure gas injection device according to claim 1, wherein the high-pressure gas is an incombustible gas such as carbon dioxide, nitrogen, or an inert gas.

4. The needle-shaped member breaks through the sealing plate of the gas tank when the relative rotation angle of the first and second cylindrical members is within about 180 degrees. The high-pressure gas injection device according to claim 1.

5. At least one groove parallel to the rotation axis of relative rotation is formed on the outer surface of the first and second cylindrical members, and the grooves are straddled over both grooves in a state where each groove is aligned in a straight line. The high-pressure gas injection device according to any one of claims 1 to 4, wherein a stopper is provided so as to be detachably engaged to prevent relative rotation of the tubular members.

6. The high-pressure gas injection device according to any one of claims 1 to 5, wherein the first or second cylindrical member is subjected to an antistatic treatment.

7. The high-pressure gas injection device according to any one of claims 1 to 6, wherein the needle-like member has a frusto-conical shape at the tip.