JPH07237590A - Respiring bag for dividing respiratory device - Google Patents

Abstract

PURPOSE:To provide a respiring bag for a half opening respiratory device preventing non-uniformity from being generated in respiration air in the respiring bag so that stable diving can be performed. CONSTITUTION:A respiring bag 3 for a half opening respiratory device of diving respiratory device in this invention is constituted such that the bag is extended/ contracted by an inflow/outflow of respiration air, to provide partitions 53 for dividing space in the respiration bag 3 into a plurality of rooms 3A, 3B, and by providing the partitions 53, since the respiring bag itself, increasing strength, can be prevented from being deformed, largely deforming the respiring bag 3 is prevented even when generated non-uniform internal pressure. Accordingly, non-uniformly of respiration air is eliminated in the repiring bag 3, and stable diving can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breathing bag for a diving breathing apparatus used underwater, and more particularly, to a semi-open type which removes carbon dioxide from breathing air circulating in a breathing circuit and uses the breathing air. The present invention relates to a breathing bag used for a breathing apparatus.

[0002]

2. Description of the Related Art A semi-open breathing apparatus, which is one of diving breathing apparatuses, generally comprises a breathing bag, a valve unit, a canister (a carbon dioxide gas adsorbing device), and a breathing gas cylinder, and breathes air circulating in a breathing circuit. The carbon dioxide gas is removed from the breathing circuit and the surplus breath air is discharged from the breathing circuit while supplying the breathing gas into the breathing circuit.

In a conventional semi-open breathing apparatus of this type, as disclosed in Japanese Patent Laid-Open No. 243494/1993,
The chest is provided with a retractable breathing bag, and the breathing bag is arranged so that the center of pressure of the breathing bag coincides with the center of pressure of the lungs. In this way, the center of pressure in the breathing bag and the center of pressure in the lungs are made to coincide.If the position of the center of pressure in the breathing bag and the position of the center of pressure in the lungs deviate, the exhaust resistance becomes extremely large. This makes it harder to breathe.

[0004]

However, the breathing bag has neither a spherical shape nor a flat shape, but its planar shape is not a perfect circle. Further, since the breathing bag needs to expand and contract, the material of the breathing bag is usually made of a flexible material.

For this reason, depending on the state of the breathing bag, as shown in FIG.
As shown in, there is a possibility that a portion of the breathing air 71 is biased 72 in the breathing bag.

[0006] When the air bias 72 accumulated in the breathing bag is thus biased, the center of buoyancy shifts, or buoyancy changes occur, causing the diver to float or sink, making stable diving impossible. There is inconvenience.

SUMMARY OF THE INVENTION An object of the present invention is to provide a breathing bag of a semi-open breathing apparatus which prevents uneven distribution of breathing air in the breathing bag and allows stable diving.

[0008]

In order to achieve the above object, the present invention relates to a breathing bag of a diving breathing apparatus including a breathing bag that expands and contracts according to inflow and outflow of breathing air, wherein the breathing bag is a breathing bag. A partition wall is provided to divide the internal space into a plurality of rooms.

Further, the present invention provides a breathing bag of a diving breathing apparatus having a breathing bag which expands and contracts according to inflow and outflow of breathing air, wherein the breathing bag is provided with a reinforcing member in the bag body, and the bag body is expanded and contracted. It is characterized by maintaining the shape of.

Further, the present invention comprises a breathing bag that expands and contracts due to inflow and outflow of breathing air, a canister that removes carbon dioxide gas from the breathing air, and a gas cylinder that supplements the breathing gas with the breathing circuit, and circulates the breathing circuit. In the semi-open type breathing apparatus that removes carbon dioxide gas from the breathing air and uses the breathing air, the breathing bag is provided with a partition wall that divides the space in the breathing bag into a plurality of chambers. .

[0011]

In the breathing bag of the diving breathing apparatus of the present invention, since the space inside the breathing bag is divided into a plurality of rooms, it is possible to prevent the respiratory air from being biased to only a part of the breathing bag. Further, by providing the partition wall, the strength of each part of the breathing bag itself can be increased and the deformation can be prevented, so that the breathing bag is prevented from being largely deformed even if an uneven internal pressure is generated. Therefore, there is no bias of breathing air in the breathing bag, and stable diving can be performed.

Further, in another aspect of the present invention, a reinforcing member is provided on the peripheral portion of the breathing bag, and since the strength of the breathing bag itself is increased and deformation can be prevented, even if uneven internal pressure occurs. Even if the breathing bag is prevented from being largely deformed, the breathing air is not biased in the breathing bag and stable diving can be performed.

Further, another aspect of the present invention is used for a breathing bag of a semi-open breathing apparatus which removes carbon dioxide gas from the breathing air circulating in the breathing circuit and utilizes the breathing air. As in the invention described above, even if a biased internal pressure of the breathing bag is generated, the breathing bag is prevented from being greatly deformed, and there is no bias of breathing air in the breathing bag, and stable diving can be performed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS.

As shown in FIG. 1, a semi-open breathing apparatus 1 according to an embodiment of the present invention comprises a breathing bag 3, a canister (carbon dioxide adsorbing device) 5, a breathing gas cylinder (gas cylinder) 7 and a mouthpiece 9. In the case of exhaust, the breathed air discharged from the mouthpiece 9 is supplied to the breathing bag 3 through the exhaust pipe 4 and the inflow / outlet 6, and in the case of inspiration, the breathing air in the breathing circuit Breathing air is supplied from the inflow / outflow port 8 of the breathing bag 3 to the mouthpiece 9 through the canister 5 and the intake pipe 10. Also, the canister 5 has a tube 2
Air is supplied quantitatively from the breathing gas cylinder 7 via 5.

The intake pipe 10 and the exhaust pipe 4 connected to the mouthpiece 9 have a double pipe structure in which the intake pipe 10 is inside and the outside is surrounded by the exhaust pipe 4 in one pipe 14.
Since it is a tube, the semi-open breathing apparatus 1 can be easily attached and detached, the appearance of the entire apparatus is not spoiled, and the configuration of the entire apparatus can be simplified. Also, the pipe 14
In the above, by adopting a double pipe structure in which the inner passage is the intake pipe 10, even if the exhaust pipe 4 is damaged by an external force or the like, damage to the intake pipe side can be prevented, so that intake air can be secured. It is like this.

The canister 5 is connected to the breathing bag 3 and the breathing gas cylinder 7, the intake pipe 15 is connected to an intake port 19 provided on one side of the canister 5, and the intake pipe 10 is connected to the exhaust port 21. Has been done. Also, in the canister 5,
An adsorbent cartridge 16 filled with a carbon dioxide adsorbent is housed, and an inflow side passage 5a for air is formed on one side of the canister and an outflow side passage 5b is formed on the other side.

The inflow passage 5a is provided with a drain valve 20 for receiving water that has infiltrated from the intake pipe 10 or the like. If water should enter the canister, the infiltrated water will reach the bottom of the canister 5. It guides to the formed water storage part 5c. On the other hand, the outflow-side passage 5b is provided with an intrusion prevention valve 22 for preventing intrusion of water into the outflow passage 5b. Also,
The adsorbent cartridge 16 is provided with a water-absorbing sponge 24 on the inflow side passage 5a side so that the inflowing water can be held to some extent before the adsorbent before it reaches the adsorbent.

In the canister 5, a valve 26 for preventing the adsorbent cartridge 16 from being forgotten to be inserted is provided which closes the inflow / outflow side passage 5b when the adsorbent cartridge 16 is forgotten to be inserted.

As shown in FIG. 2, the breathing bag 3 is formed in a flat, substantially semi-circular shape, and expands and contracts in the direction indicated by arrow A in FIG. Has become.

The breathing bag 3 is provided with a valve unit 30 on its upper surface side for discharging breathing air in the bag body 29.
The valve unit 30 is for discharging the respiratory air by the valve body 32 opening the valve opening 34 by the cord 28 when the bag body 29 expands and a predetermined amount of respiratory air is accumulated.

The breathing bag 30 has a circular central portion 51 centered on the valve unit 30. The central portion 51 is defined.
Is formed to be slightly raised outside. Central part 51
In particular, it is not limited to forming a swell, but it is preferably a perfect circle.

A plurality of partition walls 53 are radially formed from the peripheral circle of the central portion 51 toward the peripheral edge of the breathing bag. The partition wall 53 divides the space inside the breathing bag 3 into a plurality of rooms such as a plurality of small rooms 3A and 3B, and prevents the breathing air from being biased only to a part of the breathing bag 3. is there.

The partition wall 53 is, as shown in FIG.
The upper surface portion 55 and the lower surface portion 57 are joined along a line extending radially. As a joining method, an upper surface portion and a lower surface portion may be joined by an adhesive, ultrasonic fusion, sewing or the like.

By providing the partition wall 53, the strength of the breathing bag 3 itself can be increased and the deformation thereof can be prevented, so that the breathing bag 3 is prevented from being greatly deformed even if an uneven internal pressure is generated. Therefore, there is no bias of breathing air in the breathing bag, and stable diving can be performed.

The bag body 29 of the breathing bag 30 is the outer bag 2
Similar to 9, it is formed in a bellows shape from an elastic material such as rubber, and expands and contracts in the direction indicated by an arrow A by the inflow and outflow of respiratory air.

As shown in FIG. 1, the mouthpiece 9 includes an intake valve 11 and an exhaust valve 13, and the intake valve 11 and the exhaust valve 1
3 is a check valve, and in the case of intake, intake valve 1
Only 1 is opened, and in the case of exhaust, only the exhaust valve 13 is opened. The exhaust valve 13 is an on / off valve provided by the diaphragm 33.

A diaphragm 33 is arranged on one side of the casing 31 of the mouthpiece 9 so that the diaphragm 33 expands in accordance with the internal pressure in the casing 31.

The exhaust valve 13 comprises an exhaust valve body 35 and a coil spring 37 as a biasing means for biasing the exhaust valve body 35 in a closing direction. It is designed to close the exhaust port. Exhaust valve body 3
The rear end portion of the coil 5 is connected to the diaphragm 33, and the expansion of the diaphragm 33 causes the coil spring 37 to move.
The exhaust valve element 35 is moved against the urging force of (1) to open the exhaust port.

Further, the casing 31 is provided with a drain valve 41 for discharging water that has entered the casing.
The drain valve 41 is composed of a drain valve body that sits on the drain port and closes the drain port, and a coil spring that biases the valve body, and presses the valve body against the biasing force of the coil spring. By opening the drain.

A lever 39 is connected to the diaphragm 33 so that air is introduced from the breathing gas cylinder 7 when the diaphragm 33 is deformed more than a predetermined amount.

Next, the operation of this embodiment will be described.

When the semi-open breathing apparatus 1 is used, it expands and contracts in the direction of arrow A in accordance with the breathing of the wearer.

The breathing bag 3 is liable to be deformed due to a change in the internal pressure or fatigue of the bag body 29 itself. Since it is divided into rooms 3A, 3B, etc.,
No significant internal pressure is applied.

It is possible to prevent the respiratory air from being biased only to a part of the breathing bag 3. Further, by providing the partition wall 53, the strength of the breathing bag 3 itself is increased and its deformation is prevented.

On the other hand, since the partition wall 53 is to join the upper and lower parts of the breathing bag 3 radially to a part of the breathing bag 3, it can be easily formed.

The present invention is not limited to the above-mentioned embodiments, but can be variously modified without departing from the gist of the present invention.

For example, the breathing bag 3 is, as shown in FIG.
Even if the ribs 59 are provided radially like the above-described embodiment, the same effect as that of the above-described embodiment can be obtained. In this case, the rib 59 is provided on the upper surface 55 of the breathing bag 3.
It is desirable to dispose on both the bottom surface 57 and the bottom surface 57.

Further, as shown in FIG. 6, a reinforcing member 61 may be arranged on the peripheral portion of the breathing bag 3. The reinforcing member 61 is made of a hard material such as metal or plastic and has a V-shaped cross section, and is intended to maintain the shape of the peripheral portion of the breathing bag 3. Therefore, in this case, even when the breathing bag is expanded or contracted normally, the shape of the peripheral portion of the breathing bag 3 is to be maintained in a predetermined shape by the reinforcing member 61, so that it is arranged over the entire peripheral portion. .

In the modification shown in FIG. 7, a partition plate 63 is used as the partition arranged radially in the above-mentioned embodiment. As the partition plate 63, a hard material such as metal or plastic is used,
It is fixed to the upper surface 55 and the lower surface 57 of the breathing bag 3 by adhesion or the like.

[0041]

The breathing bag of the semi-open type breathing apparatus of the present invention comprises:
Since the partition wall that divides the inner space into a plurality of rooms is provided, it is possible to prevent the respiratory air from being biased only to a part of the breathing bag. Further, by providing the partition wall, the strength of the breathing bag itself can be increased and the deformation thereof can be prevented, so that the breathing bag is prevented from being greatly deformed even if a biased internal pressure is generated. Therefore, there is no bias of breathing air in the breathing bag, and stable diving can be performed.

Since the valve unit provided on the upper surface of the breathing bag for discharging the breathing air in the breathing bag does not have a large deformation of the breathing bag, there is no displacement of the valve unit, and the breathing air in the breathing bag is surely prevented. Can be discharged.

In the invention in which the reinforcing member is provided on the peripheral portion of the breathing bag, since the strength of the breathing bag itself is increased and deformation can be prevented, the breathing bag is greatly deformed even if uneven internal pressure occurs. It is possible to prevent a dive and to have a stable dive without biasing the breathing air in the breathing bag.

Further, it is used for a breathing bag of a semi-open type breathing apparatus which removes carbon dioxide gas from the breathing air circulating in the breathing circuit and uses the breathing air. Even if a biased internal pressure of the bag is generated, the breathing bag is prevented from being greatly deformed, and there is no bias of breathing air in the breathing bag, and stable diving can be performed.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a semi-open breathing apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of a breathing bag according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a state in which the breathing bag shown in FIG. 2 is cut along line III-III.

FIG. 4 is a cross-sectional view showing a state in which the breathing bag shown in FIG. 2 is cut along the line IV-IV.

FIG. 5 is a sectional view showing a breathing bag according to another embodiment.

FIG. 6 is a sectional view showing a breathing bag according to another embodiment.

FIG. 7 is a cross-sectional view showing a breathing bag according to another embodiment.

FIG. 8 is a cross-sectional view illustrating a problem of a conventional breathing bag.

[Explanation of symbols]

 1 Half-open type breathing apparatus 3 Breathing bag 53, 63 Partition wall 59 Reinforcing member 61 Peripheral member (reinforcing member)

Claims (3)

[Claims] 1. A breathing bag of a diving breathing apparatus including a breathing bag that expands and contracts according to inflow and outflow of breathing air, wherein the breathing bag is provided with a partition wall that divides a space in the breathing bag into a plurality of rooms. A breathing bag for a semi-open breathing apparatus characterized by the above. 2. A breathing bag for a diving breathing apparatus, comprising a breathing bag that expands and contracts according to inflow and outflow of breathing air, wherein the breathing bag has a reinforcing member in its bag body, and maintains the shape of the bag body during expansion and contraction. A breathing bag for a semi-open breathing apparatus characterized by being. 3. A breathing bag that expands and contracts due to inflow and outflow of breathing air, a canister that removes carbon dioxide gas from the breathing air, and a gas cylinder that supplements the breathing gas with breathing gas. A semi-open breathing apparatus that removes carbon dioxide gas and uses breathing air, wherein the breathing bag is provided with a partition wall that divides the space in the breathing bag into a plurality of rooms. Breathing bag.