JPH0238765Y2 - - Google Patents

Description

[Detailed explanation of the invention] According to the Asahi Shimbun dated February 25, 1981, in January of the same year.
A gas mask filled with an oxidizing agent whose main ingredient was active man dioxide, which was a major cause of the 83 casualties in the Miike accident on the 18th, generated a high fever of up to 117 degrees Celsius and was rendered useless, so it was rescued. It has been reported that the miners also had burns in their mouths, including bronchitis and pharyngitis.

This invention can be used in mines, buildings, factories, ships, etc.
This is an emergency evacuation oxygen mask used when escaping from a place where life is at risk due to a lack of oxygen or toxic gases generated by a fire or explosion, and especially if toxic gases such as carbon monoxide are present in the event of an accident. It can survive due to the supply of oxygen, and the supplied oxygen is pure oxygen that does not cause burns at low temperatures and is harmless.Moreover, it starts operating reliably, even if it falls over in a hurry, regardless of the angle at which the housing is used. To provide an emergency evacuation oxygen mask that maintains the oxygen supply.

The details of the present invention will be explained below with reference to the drawings. FIG. 1 is a front view and a right side view showing an embodiment of the present invention, and the front view is partially shown in section.

The housing 1 is made of a flame-resistant and heat-resistant material, such as plastic such as polycarbonate, and after housing all the built-in parts described below, the upper and lower housings are screwed together, with an airtight packing 2 placed in the middle. The inside is kept airtight.

A filter 3 is provided in the center of the housing 1 to prevent powder particles from the oxygen generating agents 4, 4' and air bubbles generated when decomposed and reacted with water from reaching the oxygen supply pipe 5. Next to the filter 3, there are ageless indicators 6, 6' that change color from green to pink when exposed to an oxygen scavenger in a sealed tank. It is then absorbed. Around the filter 3, there are further pressurized water tanks 7, 7', which serve as oxygen generation sources.
In order to break through the water tanks 7, 7', needle-shaped protrusions 8, 8' are loosely fixed to the ceiling of the housing 1 with adhesive, for example, and cause a chemical reaction with the water released from the water tanks 7, 7'. A plurality of oxygen generating agents 4, 4', etc. are provided to generate pure oxygen.
The water tanks 7 and 7' are made of pressurized bags, such as pressurized rubber bags or spring-loaded bellows bags, for example. When using pressurized rubber bags, use natural rubber bags for safety. Water is poured into the double-layered structure to prevent water from leaking through pinholes. The water tanks 7, 7' are sandwiched between the inner wall of the housing and the case of the ageless indicators 6, 6', and are partially surrounded by a sponge material and fixed so that they cannot easily move.

It is known that when water is added to oxygen generating agents such as potassium superoxide and sodium percarbonate, they react violently and generate oxygen. The oxygen generating mask for emergency evacuation of this invention uses an oxygen generating agent in which catalysts such as manganese dioxide and iron are mixed in advance with sodium percarbonate, so a gradual reaction can be obtained. For 100g x 2
When adding 150 c.c. x 2 water, 4 to 5 per minute
of pure oxygen can be continuously generated for 15 minutes. In this case, the temperature rise of the mixture of water and oxygen generating agent is a maximum of 51 degrees Celsius, and the temperature of the inhaled oxygen will be even lower, so as mentioned above, using a mask may cause burns. There are no times.

In this case, water is instantly released into the oxygen generating agent 4,4'
However, in order to instantly release water by some operation from outside the housing 1, it is optimal to release water by poking a pressurized water tank with a needle. Between the water tanks 7, 7' and the oxygen generating agents 4, 4', drainboard-like plates 9, 9' are provided to stably fix the water tanks 7, 7' and to quickly drain the released water to the oxygen generating agents 4. , 4'. Further, drainboard-like plates 10, 10' are provided below the oxygen generating agent, and bottom tanks 11, 11' are provided in the space below the oxygen generating agents 4, 10'. Care has been taken to allow water to flow easily through the inside.

Inside the housing 1, a plurality of water tanks 7, 7' and an oxygen generating agent 4, are arranged around the filter 3.
4' are connected to each other, so the oxygen generated from the oxygen generating agents 4 and 4' is transferred to the oxygen supply pipe 5 from the filter 3 in the center of the housing 1.
And as an example, a hose 1 made of silicone rubber.
2 to the mask 15. hose 1
2 and the mask 15 are housed in a space 13 of the housing 1, and although only a portion of the hose 12 is shown in the figure, it is wound in a large round shape within the space to prevent sticking. The oxygen supply pipe 5 attached to the housing 1 with a nut 16 is integrally machined with a cylindrical protrusion 5a to prevent the hose from falling off, and a metal band 14 for tightening is attached to the hose joint from the outside. It is tightened to prevent it from falling off easily.

To use the emergency evacuation oxygen mask of the present invention in the event of a disaster such as a fire or explosion, first pull forward the front lid 17 shown in the side view of FIG. Since the front lid 17 has a recess 17b for placing a finger, it can be easily pulled forward.

The front cover 17 and the lower cover 18 are locked by a known engagement piece (not shown), and when the front cover 17 is pulled forward, it moves around the hinge 17a from the position shown by the solid line to the position shown by the broken line. The engagement with the lower lid 18 is removed.
The lower lid 18 is always urged downward by springs 21 and 21', and when it is disengaged from the front lid 17, it moves around the hinge 18a from the position shown by the solid line to the position shown by the broken line and is opened. Therefore, mask 15
can be easily pulled out from the space 13 of the housing. Put the pulled out mask 15 on your nose,
The person evacuates while wearing the belt 23 passed through the belt loop fittings 22 and 22' of the housing 1 over his shoulder and inhaling the generated oxygen.

Several hooks 18 are integrally formed on the lower lid 18.
From b, 18b', airtight packing 19 for wire,
The wires 20, 20' that reach the needle-like protrusions 8, 8' through small holes smaller than the diameter of the wire 19' may be made of metal wire or plastic material such as nylon, and the lower cover 18 is opened. As the needle-like protrusions 8, 8' are unfixed from the ceiling of the housing 1, the water tanks 7, 7' are pulled downward.
breaks through and releases water instantly. needle-like protrusion 8,
In the space between 8' and the water tanks 7, 7', a thin sponge material can be inserted to prevent the water tank from being accidentally penetrated.

In the event of an accident, an oxygen mask for emergency evacuation must be able to be handled quickly and at the same time must operate reliably. According to the present invention, the oxygen source is connected to the filter 3.
There are several oxygen pumps installed around the main body, so that even if one fails, the other will operate and supply oxygen. As mentioned above, the passages from each of the multiple oxygen generating sources to the filter 3 are connected to each other, but the water discharged from one water tank 7 is passed through the drainboard-like plate 9 to the oxygen generating agent 4 located directly below. It penetrates and generates oxygen, and it is also vigorously released from both sides of the Ageless indicator 6 toward the other oxygen generating agent 4', so even if the other water tank 7' does not break, one water tank 7 Oxygen is generated by receiving water discharged from the tank, making it possible to extend the oxygen supply time compared to the case alone.

Next, consider what happens if you fall while using an oxygen mask. When people are involved in an accident, they become upset and panic, tripping over things, bumping into things, and even falling over. In order to be able to use the oxygen mask under such circumstances, when the housing 1 is tilted at any angle, the filter 3 and the oxygen supply pipe 5
It is necessary that the water is not submerged in the water discharged from the water tanks 7, 7'. The oxygen-generating mask for emergency evacuation of the present invention has the lower part of the housing 1 branched into two parts, and the central part raised in a roughly inverted U shape.
A filter 3 and an oxygen supply pipe 5 are attached to the shaped part 24.
is installed, the water level relationship when changing the housing angle is as shown schematically in Figure 2.
The filter 3 and the oxygen supply pipe 5 will not be submerged in water. In Figure 2, A is the normal position, Ro to Ho are tilted 45°, 90°, 180°, and 225° to the left from the normal position, and F is tilted forward from the normal position of A. shows the case when tilted 45 degrees to the left from position F. Since the oxygen generating mask for emergency evacuation of the present invention has a symmetrical structure with the filter 3 at the center, even if it is tilted to the right from the normal position or tilted to the opposite side from the normal position, the filter 3 and Of course, the supply pipe 5 will not be submerged in water. In other words, in the oxygen mask for emergency evacuation of the present invention, as an example, the purpose is to continue generating 4 to 5 pure oxygen per minute for 15 minutes.
It is planned to add 150c.c. x 2 of water to g x 2, but if water is released from the 150c.c. x 2 water tanks 7 and 7', the filter 3 and oxygen supply pipe 5 will be submerged. To avoid this, first calculate the height A of the two forks in Figure 2 A, then calculate the width B of the two forks in C, and the dimension C from the filter 3 to the ceiling of the housing in D. The calculations are made taking into account the depth D at which the filter 3 will not be submerged in water if it is installed in the center of the housing.

As detailed above, according to the present invention, there is provided an oxygen generating agent that reacts with water to generate oxygen, and a pressurized water tank for instantly releasing water from the oxygen generating agent. There is a needle-like protrusion that breaks through the water tank, a front lid that is pulled toward you when you take out the mask, a lower lid that is unlocked and opened as you pull the front lid toward you, and a wire airtight seal from the bottom lid. It is constructed with wires that run through the packing and reach the needle-like protrusions, so in the event of an accident, you can instantly inhale oxygen by simply pulling the front lid and placing the mask on your nose, making it extremely practical in terms of operability and speed. It exerts a similar effect.

In addition, several oxygen generating sources consisting of needle-shaped protrusions, water tanks, and oxygen generating agents are installed around the filter, and are connected to each other by passages, so that in the event that there is a problem with the oxygen generating sources, This has an extremely important effect in terms of safety, as it allows the oxygen generating source to be operated and used.

Furthermore, the lower part of the housing is bifurcated, and the central part is roughly shaped like an inverted U.
A filter and oxygen supply pipe are attached to the shaped part, creating a structure that will not submerge in water no matter how you tilt it, so even if it falls during evacuation, it can continue to be used safely without any problems, making it extremely reliable. demonstrate.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view and right side view of an oxygen mask for emergency evacuation according to an embodiment of the present invention.
The cross-sectional portion shows a portion taken along line A-A' in the right side view. Figure 2 is a schematic diagram showing the water level relationship when the housing angle is changed, where A is the normal position and Ro to Ho are the cases when the housing is tilted 45°, 90°, 180°, and 225° to the left from the normal position, respectively. F shows the case when the robot is tilted forward from the normal position of A, and G shows the case when it is tilted 45 degrees to the left from the F position. 1: Housing, 2: Airtight packing, 3: Filter, 4, 4': Oxygen generating agent, 5: Oxygen supply pipe, 6, 6': Ageless indicator,
7, 7': Water tank, 8, 8': Needle-shaped protrusion, 9,
9': Drain board, 10,10': Drain board, 1
1, 11': Bottom tank, 12: Hose, 13:
Space, 14: band, 15: mask, 16: nut, 17: front lid, 18: lower lid, 19, 19':
Airtight packing for wire, 20, 20': wire, 21, 21': spring, 22, 22': belt loop fitting, 23: belt, 24: inverted U-shaped part.

Claims (1)

[Scope of claims for utility model registration] 1. An oxygen generating agent that generates oxygen by reacting with water;
A pressurized water tank is fixed above the oxygen generating agent via a drainboard-like plate and is pressurized to instantly release water, and the water tank is loosely fixed to the ceiling of the housing above the water tank and is released when in use. A needle-shaped protrusion that pierces the water tank when pulled downward, a front lid that is pulled toward you when pulling out the mask, and a lock that is released as the front lid is pulled toward you to open the mask. A lower lid is always biased downward by a spring, and a hook provided on the lower lid passes through an airtight packing for the wire to reach the needle-like protrusion, and as the lower lid is opened. An oxygen-generating mask for emergency evacuation, characterized by comprising a needle-like protrusion and a wire that is pulled downward. 2 In order to generate oxygen by piercing the water tank with a needle-shaped protrusion and instantly releasing water into the oxygen generating agent, several oxygen generating sources were installed around the filter and connected to each other by passages. The first claim for utility model registration characterized by
Oxygen generating mask for emergency evacuation as described in section. 3. Claims for registration of a utility model characterized in that the lower part of the housing is bifurcated into two, the central part of the fork is roughly shaped like an inverted U, and a filter and an oxygen supply pipe are attached to the inverted U-shaped part. The oxygen generating mask for emergency evacuation according to item 1 or 2.