JPH1061893A - Filling method and filling structure for combustible gas and combustion supportable gas and filler using the gas - Google Patents

Abstract

PROBLEM TO BE SOLVED: To practically fill a pressure container with combustible gas and combustion supportable gas by a method wherein concentration of mixture gas is set to a value outside an explosion range in the vicinity of a filling port. SOLUTION: A high pressure container 1 is filled with oxygen from a combustion supportable gas source 5. Oxygen enters a small chamber 13 through a filling port 11 and filling is effected as hydrogen in the small chamber 13 is pushed out to a large chamber 14. In this case, since hydrogen in the small chamber 13 is substituted for oxygen, filling with oxygen is effected outside an explosion range. Thereafter, to confirm safety of the structure of a method to fill with combustible gas and combustion supportable gas, helium is used instead of hydrogen, and gas concentration in the vicinity of the filling port 11 of the high pressure container 1 is measured. Right after filling, gas in the small chamber 13 is bled and when helium concentration is investigated, it is detected that gas concentration in the vicinity of the filling port 11 is below an explosion lower limit of hydrogen. Thus, even when spark occurs and heat is generated during sealing of the filling port 11, no influence is exercised on mixture gas and practicability is ensured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and structure for filling a combustible gas and a supporting gas, and a packing using the same.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 5-278554, for example, in a gas generator for an airbag device, a flammable gas mixture for inflating an airbag in a high-pressure container is provided. It is enclosed.

[0003] Here, the mixed gas contains a combustible gas and a combustible gas and / or an inert gas. The combustible gas is preferably hydrogen, but may also be methane or a mixture of hydrogen and methane. Preferably, the supporting gas is oxygen. The inert gas is preferably nitrogen, argon or a mixture of nitrogen and argon.

[0004]

The combustible gas and the supporting gas can be burned by being mixed at a certain concentration. Here, the lower limit and the upper limit of the flammable gas concentration required for burning are called lower explosion limit and upper explosion limit, respectively, and the range between the lower explosion limit and the upper explosion limit is called explosion range or combustion range. The minimum ignition energy of the combustible gas and the supporting gas within the explosion range is, for example, 0.02 mJ (millijoule) when hydrogen is selected as the combustible gas and oxygen is selected as the supporting gas. ing.

When a gas is charged into a high-pressure container under pressure, the gas temperature rises due to heat generated by the compression of the gas. Due to this heat of compression when filling flammable gas and supporting gas,
The temperature of the gas is the auto-ignition temperature (for example, 400 ° C for hydrogen
It is said above. ), Combustion starts without an ignition source.

That is, in a gas generating device for an airbag device or the like, when a flammable gas and a supporting gas are filled in a high-pressure container and the filling port is sealed, such characteristics are taken into consideration and sufficient. It is desired to establish a practical filling technique.

An object of the present invention is to solve such a conventional problem and to provide a method for practically filling a pressure vessel with a combustible gas and a supporting gas.

[0008]

According to the present invention, in the step of filling a combustible gas and a combustion-supporting gas into a high-pressure vessel through a filling port, the concentration of the mixed gas near the filling port is set outside the explosion range. It was made.

According to the present invention, the container can be reliably filled with the combustible gas and the combustible gas.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The method for filling a combustible gas and a supporting gas according to the first aspect of the present invention is a method for filling a combustible gas and a supporting gas through a filling port provided in a container. In the process, the gas composition of the flammable mixed gas generated near the filling port is regulated outside the explosion range, and even if sparks or heat are generated when the filling port is sealed, there is no effect on the mixed gas Do not give.

According to a second aspect of the present invention, there is provided a method for filling a combustible gas and a supporting gas, comprising the steps of:
The filling step includes a step of filling a combustible gas, a combustible gas, and / or an inert gas.

According to a third aspect of the present invention, there is provided a method for charging a combustible gas and a supporting gas according to the first and second aspects of the present invention. It is designed to be filled outside the explosion area.

According to a fourth aspect of the present invention, there is provided a method for filling a combustible gas and a supportive gas, wherein at least the step of charging the combustible gas and the method for filling a combustible gas are carried out. The method has a step of exhausting and / or evacuating the filling path between the step of filling the gas and the step of filling the gas.

According to a fifth aspect of the present invention, there is provided a method for filling a combustible gas and a combustion supporting gas according to any one of the first to third aspects of the present invention, wherein the step of filling the combustible gas and the step of supporting the combustion are performed. The step of filling the reactive gas is performed successively.

According to a sixth aspect of the present invention, there is provided a method for charging a combustible gas and a supporting gas, comprising the steps of: This is executed after the step of filling the combustible gas and / or the step of filling the combustible gas.

According to a seventh aspect of the present invention, there is provided a method for charging a combustible gas and a supporting gas according to the first, second, third, fourth, fifth and sixth aspects.
Each of the filling methods has a cooling step of cooling the container, and regulates the temperature of the filling gas to a temperature not higher than the spontaneous ignition temperature.

The method of filling a combustible gas and a combustible gas according to claim 8 of the present invention is characterized in that the method of claim 1, 2, 3, 4, 5,
Each of the filling methods 6 and 7 has a step of grounding the container.

According to a ninth aspect of the present invention, there is provided a filling structure of a combustible gas and a combustible gas, wherein the combustible gas and the combustible gas are filled into the container through a filling port provided in the container. A predetermined time until the opening is sealed by the sealing member, which is provided with separating means for substantially separating the combustible gas and the supporting gas at least near the filling opening, and seals the filling opening. Even if sparks or heat are generated, it does not affect the mixed gas.

According to a tenth aspect of the present invention, there is provided a filling structure of a flammable gas and a supporting gas, wherein the separating means comprises a separating means, wherein the inside of the container is surrounded by a small chamber surrounding the filling port and its surroundings. And a partition member having fine holes communicating the small chamber and the large chamber.

[0020] In the filling structure of a flammable gas and a supporting gas according to a twelfth aspect of the present invention, in the filling structure of the ninth aspect, the separating means forms a space spirally continuous with the filling port in the container. It consists of a helical tubular member that defines.

According to a twelfth aspect of the present invention, in the filling structure of a flammable gas and a supporting gas, in the filling structure of the ninth aspect, the separating means has a cylindrically continuous space with the filling port in the container. It consists of a cylindrical member to define.

According to a thirteenth aspect of the present invention, in the filling structure of a flammable gas and a supporting gas, in the filling structure of the ninth aspect, the separating means is disposed to face the filling port in the container, It comprises a deflecting plate for deflecting the gas flow path.

According to a fourteenth aspect of the present invention, there is provided the filling structure of the combustible gas and the supporting gas in the thirteenth aspect, wherein the deflecting plate further includes a partition plate for guiding the gas flow in the rotational direction. It is a thing.

According to a fifteenth aspect of the present invention, there is provided a structure for filling a combustible gas and a combustion-supporting gas.
In each of the filling structures 2, 13, and 14, at least a part of the separating means includes a means for restricting a gas flow.

The filling structure of a combustible gas and a combustion supporting gas according to claim 16 of the present invention provides the structure of claim 9, 10, 11, 1.
In each of the filling structures 2, 13, 14, and 15, at least a part of the separating means includes a check valve for preventing gas from moving backward.

The filling structure of a flammable gas and a combustion supporting gas according to claim 17 of the present invention is characterized in that:
In each of the filling structures 2, 13, 14, 15, and 16, the sealing member of the filling port is selected from any of a pin, a screw, a cap, and a welding plate.

The filling structure of the combustible gas and the supporting gas according to the eighteenth aspect of the present invention is the filling structure of the seventeenth aspect, wherein the sealing member has a portion which is more flexible than the container.

According to a nineteenth aspect of the present invention, there is provided a filling structure of a flammable gas and a supporting gas.
In each of the filling structures of 2, 13, 14, 15, 16, 17, and 18, the gas jetting port of the separating means is provided with gas diffusing means.

According to a twentieth aspect of the present invention, there is provided a filling structure of a flammable gas and a supporting gas.
In each of the filling structures of 2, 13, 14, 15, 16, 17, 18, and 19, the container is divided into two or more regions, and the separating means fills each region with a gas substantially uniformly. Is a filling structure.

The filling of the combustible gas and the supporting gas according to the twenty-first aspect of the present invention is obtained by filling the combustible gas and the supporting gas by the filling methods of the first to eighth aspects.

The filling of a combustible gas and a supporting gas according to claim 22 of the present invention is a filling of a combustible gas and a supporting gas by the filling structures of claims 9 to 20.

The filling of the combustible gas and the supporting gas according to claims 21 and 22 of the present invention is used for a gas generator for an airbag device.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. (Embodiment) FIG. 1 shows an overall configuration of an apparatus used for a method for filling a combustible gas and a supporting gas in an embodiment of the present invention. In FIG. 1, 1 is a high-pressure vessel, and 11 is a filling port thereof. Reference numeral 12 denotes a sealing member for sealing the filling port 11. Reference numeral 2 denotes a filling jig, which is mounted on the high-pressure container 1 by screwing means or pressurizing means. Reference numeral 3 denotes a sealing member operating mechanism which tightens a sealing member (sealing pin) 12 into the filling port 11 by a piston method or a rotary screwing method.
Reference numeral 4 denotes a combustible gas source or a mixed gas source of a combustible gas and an inert gas. Reference numeral 5 denotes a supporting gas source or a mixed gas source of a supporting gas and an inert gas. 6 is a vacuum pump.
7 is a gas source 4, 5 and a vacuum pump 6, and a filling jig 2.
Is a filling path connecting the high-pressure container 1 to the filling path. On-off valves 81, 82, 83, 84, a pressure gauge 91,
The provision of 92 and 93 controls the filling speed when filling the high-pressure container 1 with gas.

As the flammable gas, various flammable gases can be used. For example, at least one kind of gas selected from hydrogen, hydrocarbons and alcohols is used. As the supporting gas, various supporting gases can be used, and for example, at least one kind of gas selected from oxygen and halogens is used. As an inert gas,
Various inert gases can be used, for example, helium,
At least one gas selected from nitrogen and argon is used. Air can be used as a mixed gas of the supporting gas and the inert gas.

In FIG. 1, a high-pressure container 1 is provided with a structure for filling a combustible gas and a combustible gas according to an embodiment of the present invention. Reference numeral 15 denotes a bottomed cylindrical partition member 15 which defines a small chamber 13 surrounding the filling port 11 and a large chamber 14 around the small chamber 13. At least one ejection port 16 is formed in a part of the peripheral surface of the partition member 15 as a fine hole communicating the small chamber 13 and the large chamber 14.

Next, a method for filling the high-pressure vessel 1 with a combustible gas and a combustible gas using the above-described apparatus configuration will be described with reference to FIG. Here, it is assumed that hydrogen is used as the combustible gas and oxygen is used as the combustible gas. In FIG. 1, first, the high-pressure container 1 is mounted on the filling jig 2 by a known mounting method such as screwing or pressurizing. With the high-pressure container 1 and the filling jig 2 in communication, the on-off valves 82 and 83 are closed. Next, the on-off valves 81 and 84 are opened. The filling path 7, the filling jig 2, and the high-pressure container 1 are each evacuated by the vacuum pump 6. The degree of vacuum is monitored by a pressure gauge 93.
After evacuation, the on-off valve 84 is closed, the on-off valve 83 is opened, and hydrogen is supplied from the combustible gas source 4 into the high-pressure container 1 through the charging port 11.
Fill through. Here, hydrogen enters the small chamber 13 through the filling port 11, and is filled into the large chamber 14 of the high-pressure vessel 1 through the ejection port 16. When a predetermined pressure is reached by the monitor of the pressure gauge 93, the on-off valves 81 and 83 are closed. In this way, the high-pressure vessel 1 is first filled with hydrogen outside the explosion range. Here, since the sealing member operation mechanism 3 is not operated, the filling port 11 is not sealed by the sealing member 12.

Next, after exhausting hydrogen gas in a region defined by the valves 81, 82 and 83 in the filling path 7 from an exhaust line (not shown), the on-off valve 84 is opened and the vacuum pump 6 opens the valve in the filling path 7 Only the areas defined by 81, 82 and 83 are evacuated. Here, when exhausting the flammable gas, it is desirable to exhaust the flammable gas while diluting it with an inert gas such as N ₂ in an exhaust line (not shown) so as not to ignite the flammable gas discharged from the exhaust line.

After the evacuation, the on-off valve 84 is closed, and the on-off valves 81 and 82 are opened to fill the high-pressure vessel 1 with oxygen from the oxidizing gas source 5. Oxygen is supplied from the filling port 11 to the small chamber 13
And the hydrogen in the small chamber 13 is discharged from the jet port 16 to the high pressure vessel 1.
It is filled while being pushed into the large chamber 14 inside. At this time, since the ejection port 16 is sufficiently small, backflow of hydrogen hardly occurs. Since the hydrogen in the small chamber 13 has been replaced by oxygen, it means that oxygen has been filled outside the explosion range.
When the pressure in the high-pressure container 1 reaches a predetermined pressure, the sealing member operation mechanism 3 is operated, and the filling port 11 of the high-pressure container 1 is sealed by the sealing member 12. After that, the oxygen in the filling jig 2 and the filling path 7 is released from an atmosphere release valve (not shown), and then the filling jig 2 is removed.

In order to confirm the safety of the method of filling the combustible gas and the supporting gas and the structure of the high-pressure vessel 1, a filling experiment was conducted by the same filling method using helium as an inert gas instead of hydrogen. The gas concentration near the filling port 11 was measured. Immediately after the filling, the gas in the small chamber 13 of the high-pressure vessel 1 was extracted, and the helium concentration was examined by a quadrupole mass spectrometer. That is, when helium is replaced with hydrogen, the gas concentration in the vicinity of the filling port 11 is lower than the lower explosion limit of hydrogen.

Therefore, according to the method for charging the combustible gas and the supporting gas, the concentration of the mixed gas in the vicinity of the charging port 11 is restricted outside the explosion range in the charging step of filling the combustible gas and the supporting gas. Therefore, even if sparks or heat are generated when the filling port 11 is sealed, the mixed gas is not affected and practicality can be ensured.

In addition, according to the filling structure of the combustible gas and the flammable gas applied to the pressure vessel 1, the filling port 11 is provided.
In the vicinity, the flammable gas and the flammable gas are separated by the small chamber 13 and regulated outside the explosion range. Therefore, even if sparks or heat are generated when the filling port 11 is sealed, the mixed gas is affected. And practicality can be ensured.

In the above embodiment, the filling of various gases is performed by pressure control, but it can be replaced by weight control or flow rate control.

Although the flammable gas is filled first and the flammable gas is filled later, the order of filling may be either first or last. An inert gas source may be added thereto, and the filling order in this case is also arbitrary.
Further, a gas source in which an inert gas is mixed with a flammable gas may be used, or a gas source in which an inert gas is mixed with a flammable gas may be used. In this case, an inert gas source may be further added. After each filling step, at least a part of the filling line is evacuated and evacuated. When the gas pressure in the filling line is low, only the evacuation may be performed. If the accuracy of the composition of the filling gas does not matter, only the exhaust may be used.
Preferably, a vacuum should be applied after evacuation.

Further, in each of the filling steps, the filling can be performed while cooling the high-pressure vessel 1 and / or the filling jig 2. Since this has the effect of removing the heat of compression generated during each filling step, it is possible to regulate the temperature of the mixed gas to the spontaneous ignition temperature or lower.

Although the sealing of the filling port 11 by the sealing member 12 is performed last, it may be performed for each filling step of various gases. If the process is performed for each process, the filling port 11
Can be evacuated not only to the filling path 7 but also to the filling jig 2.

The sealing method of the filling port 11 is as follows: when a sealing pin is used as the sealing member 12, by fitting, when using a screw, by screwing in, and when using a cap, by caulking. Therefore, when a welding plate is used, the welding is performed. In addition, it is preferable that the pin, the screw, and the cap have a flexible portion with respect to the high-pressure container 1.

When the filling port 11 is sealed by the sealing member 12, if the high-pressure container 1 and / or the sealing member operating mechanism 3 are grounded (not shown), further reliability of the operation is ensured. You. Further, if the high-pressure vessel 1 is cooled, the reliability of the operation is further ensured.

In the above embodiment, the partition member 1 is used as a means for substantially separating various gases near the charging port 11 in each of the steps of charging the combustible gas and the supporting gas.
5 is described, but the shape can be any shape. The shape of the small chamber 13 may be a cube, a rectangle, or may be constituted by a spherical surface. However, a structure having no corners is preferred. This is because if there is a corner, there is a possibility that a gas pool may be formed there. Here, the number of the ejection ports 16 and the direction of the mouth axis can be arbitrarily selected. Furthermore, it is also possible to use each of the following separating means as the separating means.

FIGS. 2A and 2B show a first modification of the separating means. This separating means has one end connected to the high pressure vessel 1
Spiral tube 1 attached to filling port 11 inside
51. The spiral tube 151 constitutes a flow path sufficient to prevent backflow of gas. The gas that has been charged later is pushed out from the tube 151 into the large chamber 14. Therefore, the gas concentration in the vicinity of the filling port 11 can be restricted outside the explosion range by the spiral tube 151.

Further, in this separating means, since the spiral tube 151 is used, the gas ejected from the ejection port 16 forms a vortex as shown by an arrow in the figure, and the gas in the high-pressure vessel 1 is mixed. To promote.

FIG. 3 shows a second modification of the separating means. This separating means has one end connected to the filling port 1 inside the high-pressure vessel 1.
1 is a cylindrical tube 152 attached to the apparatus. The gas charged later pushes the gas charged earlier from the tube 152 into the large chamber 14. Thereby, the gas concentration in the vicinity of the filling port 11 can be regulated outside the explosion range. Here, a straight tube is used, but at least one portion may be bent.

FIG. 4 shows a third modification of the separating means. This separating means has one end connected to the filling port 1 inside the high-pressure vessel 1.
1 is a cylindrical tube attached to
The air-permeable member 21 is provided at the tip of 52. For this permeable member 21, a porous material such as a sintered metal or a mat-like metal in which fine metal fibers are laminated is used. In this manner, similarly to the second modification, the gas that has been charged later is supplied from the tube 152 through the large chamber 14.
The gas concentration near the filling port 11 can be regulated outside the explosion range, and the gas can be efficiently diffused from the tube 152 to the large chamber 14 by the gas permeable member 21 at the tip of the tube 152.

FIGS. 5A and 5B show a fourth modification of the separating means. This separating means forms a fine gap between the first circular plate 153A which is continuous around the filling port 11 of the high-pressure vessel 1 toward the outer periphery thereof, and the first circular plate 153A. Using a deflection plate 153 having a second circular plate 153B disposed therein, the flow of gas flowing from the filling port 11 in the pressure vessel 1 is changed in the outer circumferential direction (in FIG. 4,
(In the direction of the arrow). The second
The circular plate 153B may have a curved shape. Even in this case, the deflection plate 1 is provided near the filling port 11 of the pressure vessel 1.
Since the gas filled later pushes out the gas previously charged through the 53 gas channels, the gas is substantially separated,
The gas concentration in the vicinity of the filling port 11 can be regulated outside the explosion range.

FIG. 6 shows a fifth modification of the separating means. This separating means uses a deflecting plate 153 having first and second circular plates 153A and 153B as in the fifth modification, and furthermore, a center of the high-pressure vessel 1 between these circular plates 153A and 153B. A plurality of (four in this case) partition plates 15 that are radial to the axis and each of which is curved.
4 are provided. In this manner, the flow of the gas flowing from the filling port 11 and deflected in the outer peripheral direction is further guided in the circumferential direction of the inner peripheral surface of the high-pressure container 1, and flows while rotating. Therefore, similarly to the fourth modified example, the gas filled later pushes out the previously filled gas by the gas flow path of the deflection plate 153 at the filling port 11 to thereby fill the filling port 11.
The gas concentration in the vicinity can be regulated outside the explosion range, and the gas in the container 1 can be rotated by the plurality of partition plates 154 and quickly diffused.

In each of the separation means of the high-pressure vessel 1,
Each gas passage may be provided with a means for substantially narrowing the passage or a check valve for preventing the gas from moving backward.
In this case, the backflow prevention can be further improved, and the gas separation effect can be further enhanced. Further, the spiral tube, the air-permeable member, the partition plate, and the like shown in the first, third, and fifth modifications are effective as auxiliary means for promoting gas mixing. It is effective when used.

Next, the mixing of the filled various gases in the high-pressure vessel 1 will be considered. The high pressure vessel 1 is divided into a plurality of areas,
Further, it is assumed that the gas composition is desired to be uniform in any region. FIG. 7 illustrates a high-pressure container 31 partitioned into two regions. Here, the same components as those in FIG. 1 are denoted by the same reference numerals. The high-pressure container 31 is partitioned into a first region 32 and a second region 33, and both are communicated by a ventilation opening 34. As the separating means, any one shown in the embodiment of the present invention can be used. Here, an example using the partition member 15 illustrated in FIG. 1 is shown. Taking hydrogen as a gas to be charged first and oxygen as a gas to be charged later, for example, oxygen is filled so as to press hydrogen, so that the first region 32 immediately after the filling has a high hydrogen concentration and the second region At 33, the oxygen concentration is high. However, since the two regions are communicated with each other through the ventilation opening 34, the gas composition in the two regions becomes equal after a predetermined time has elapsed.

As described above, according to the embodiment of the present invention, it is possible to fill a high-pressure container partitioned into a plurality of regions.

However, in this case, the time required for the gas composition in the high-pressure vessel 31 to be uniform becomes longer than that in the high-pressure vessel having a single structure. In order to reduce this time, as shown in FIG. The structure is valid. In FIG. 8, reference numeral 41 denotes a tube, and one open end 42 is attached to the filling port 11. The other open end 43 is the first region 32
And an outlet 44 is provided separately in the vicinity of the opening end 43 and communicates with the second region 33 through the outlet 44. This way,
Through the open end 43 and the outlet 44, the first region 32
And the second region 33 can be simultaneously filled with gas,
The first and second regions 32 and 33 can be ventilated through the open end 43 and the outlet 44, and therefore, the gas composition in both regions can be substantially the same. Also,
In the vicinity of the filling port 11, the gas filled later pushes out the gas filled earlier, so that the gas composition can be out of the explosion range. The open end 4 of the tube 41
3. The diameter, the installation position, and the direction of the mouth axis of the outlet 44 are arbitrary.

In each of the above embodiments, the filling port is provided on the central axis of the pressure vessel, but may be at a position offset from the central axis or on an axis intersecting the long axis. Further, the number of the ejection ports of the separation means and the direction of the mouth axis can be selected in any manner.

Each of the above-mentioned filling methods, each filling structure, and the filling material can be applied to the high-pressure container provided in the gas generator for the airbag device mentioned in the conventional example, and the same operation and effect can be obtained.

[0061]

As described above, according to the present invention, in the filling step of filling a combustible gas and a combustible gas, the combustible gas and the combustible gas are separated in the vicinity of the filling port. Because it is regulated outside the explosion range, even if sparks or heat are generated when sealing the filling port, it does not affect the mixed gas at all,
An advantageous effect is obtained that the combustible gas and the supporting gas can be practically filled in the container.

[Brief description of the drawings]

FIG. 1 is an apparatus configuration used for a method for filling a combustible gas and a supporting gas in an embodiment of the present invention, and a high-pressure container provided with a structure for filling a combustible gas and a supporting gas in an embodiment of the present invention. Illustration

FIG. 2 (A) is a partially omitted cross-sectional view showing a first modification of the separating means provided in the high-pressure vessel. FIG. 2 (B) is a front view of the separating means.

FIG. 3 is a partially omitted sectional view showing a second modification of the separating means provided in the high-pressure vessel.

FIG. 4 is a partially omitted sectional view showing a third modification of the separation means provided in the high-pressure vessel.

FIG. 5A is a partially omitted cross-sectional view showing a fourth modification of the separation means provided in the high-pressure vessel. FIG. 5B is a front view of the separation means.

FIG. 6 is a front sectional view showing a fifth modification of the separating means provided in the high-pressure vessel.

FIG. 7 is a cross-sectional view showing a filling structure of a combustible gas and a combustible gas according to an embodiment of the present invention in a high-pressure container partitioned into a plurality of regions.

FIG. 8 is a sectional view showing a filling structure of a combustible gas and a combustible gas according to an embodiment of the present invention in a high-pressure container partitioned into a plurality of regions.

[Description of Signs] 1 High-pressure vessel 11 Filling port 12 Sealing member 13 Small chamber 14 Large chamber 15 Partition member (separating means) 16 Spout port 2 Filling jig 3 Sealing member operation mechanism 4 Combustible gas source or combustible gas Mixed gas source of inert gas 5 Combustible gas source or mixed gas source of combustible gas and inert gas 6 Vacuum pump 7 Filling path 81, 82, 83, 84 On-off valve 91, 92, 93 Pressure gauge 151 Spiral Tube (separating means) 152 Cylindrical tube (separating means) 21 Breathable member 153 Deflection plate (separating means) 153A First circular plate 153B Second circular plate 154 Partition plate 32 First region 33 Second Area 41 tube 42 open end 43 open end 44 outlet

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Yoshikazu Kawauchi 3-10-1, Higashi-Mita, Tama-ku, Kawasaki-shi, Kanagawa Matsushita Giken Co., Ltd. (72) Kiyoji Yamamori Tama-ku, Kawasaki-shi, Kanagawa Matsushita Giken Co., Ltd. 3-1-1 Higashi Mita (72) Inventor Hiroyuki Takahashi 1-1-1, Shimomachiya, Chigasaki City, Kanagawa Prefecture Inside Miyata Kogyo Co., Ltd. (72) Inventor Takuo Koyama Kanagawa Prefecture 1-1-1, Shimomachiya, Chigasaki-shi, Miyata Kogyo Co., Ltd. (72) Inventor Mitsuru Tsukigi 1-1-1, Shimomachiya, Chigasaki-shi, Kanagawa Prefecture, Miyata Kogyo Co., Ltd. (72) Yasushi Usui, Kanagawa Miyata Kogyo Co., Ltd., 1-1-1, Shimomachiya, Chigasaki-shi

Claims (23)

[Claims] In a filling step of filling at least a combustible gas and a combustible gas through a filling port provided in a container, a gas composition of a combustible mixed gas generated in the vicinity of the filling port is out of an explosion range. A method for charging a combustible gas and a supporting gas, which is regulated. 2. The method according to claim 1, wherein the charging step includes a step of charging a combustible gas, a supporting gas and / or an inert gas.
The method for filling the combustible gas and the supporting gas described in the above. 3. The method for filling a combustible gas and a combustible gas according to claim 1 or 2, wherein in the filling step for each of the various gases, a mixed gas of the various gases is filled outside the explosion range. 4. A charging path is exhausted between at least a step of charging a combustible gas and a step of charging a supporting gas,
4. The method for charging a combustible gas and a combustible gas according to claim 1, further comprising a step of evacuating and / or evacuating. 5. The method according to claim 1, wherein the step of filling the combustible gas and the step of filling the combustible gas are performed in succession. . 6. The method according to claim 2, wherein the step of filling the inert gas is performed after the step of filling the combustible gas and / or the step of filling the combustible gas. Filling method of supporting gas. 7. The method according to claim 1, further comprising a cooling step of cooling the container. 8. The method according to claim 1, further comprising a step of grounding the container. 9. After filling the container with a combustible gas and a combustible gas through a filling port provided in the container, at least the filling is performed for a predetermined time until the filling port is sealed with a sealing member. A filling structure for a combustible gas and a supporting gas, comprising a separating means for substantially separating the combustible gas and the supporting gas near the mouth. 10. The separating means comprises a partition member defining a small chamber surrounding the filling port in the container and a large chamber surrounding the small chamber, and having a fine hole communicating the small chamber and the large chamber.
The filling structure of the flammable gas and the flammable gas described. 11. The filling structure for a combustible gas and a combustible gas according to claim 9, wherein the separating means comprises a spiral tubular member defining a space which is spirally continuous with the filling port in the container. 12. The filling structure for a combustible gas and a combustible gas according to claim 9, wherein the separating means comprises a cylindrical member defining a space continuous in a cylindrical shape at the filling port in the container. 13. The filling structure for combustible gas and combustible gas according to claim 9, wherein the separation means is provided opposite to the filling port in the container and comprises a deflection plate for deflecting the gas flow path. 14. The structure for charging a combustible gas and a combustible gas according to claim 13, wherein the deflection plate includes a partition plate for further guiding the gas flow in the rotation direction. 15. The structure for charging a combustible gas and a combustible gas according to claim 9, wherein at least a part of the separating means includes a means for restricting a gas flow. 16. The filling structure of a combustible gas and a supporting gas according to claim 9, wherein at least a part of the separating means includes a check valve for preventing gas from moving backward. 17. The filling structure for a flammable gas and a supporting gas according to claim 9, wherein the sealing member of the filling port is selected from a pin, a screw, a cap, and a welding plate. 18. The filling structure according to claim 17, wherein the sealing member has a portion that is more flexible than the container. 19. The filling structure for a combustible gas and a combustible gas according to claim 9, further comprising a gas diffusion means provided at a gas outlet of the separation means. 20. The flammable fuel according to claim 9, wherein the container is divided into two or more regions, and the separation means fills each region with a gas substantially evenly. Structure of neutral gas and supporting gas. 21. A filling of a combustible gas and a supporting gas filled by the method for filling a combustible gas and a supporting gas according to claim 1. 22. A flammable gas and flammable gas filling material filled by the flammable gas and flammable gas filling structure according to claim 9. 23. The filling of a combustible gas and a supporting gas according to claim 21, which is used for a gas generator for an airbag device.