KR101549684B1 - Portable breathing device for multiple user - Google Patents

Abstract

The present invention relates to a case for accommodating an oxygen tank storing compressed oxygen; And a plurality of masks respectively connected to the oxygen tank through an oxygen supply hose. Here, each of the masks may include: a face cover configured to cover a face of a user; A carbon dioxide removing unit which is mounted on the face cover and has an exhalation check valve that allows only air to pass through during respiration of the user, and removes carbon dioxide from the exhalation air; And an exhaust pipe connected to the oxygen supply hose and mounted on the face lid, wherein the exhalation air passed through the carbon dioxide removal unit and oxygen supplied from the oxygen supply hose are mixed to form an exhaust air, And a mixing chamber having an inspiration check valve for passing therethrough.

Description

{PORTABLE BREATHING DEVICE FOR MULTIPLE USER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable respirator for multiple users, and more particularly, to a multi-user portable respirator that can be used by a plurality of people as well as one of the persons.

Over the past few decades, Korea has continued to pursue growth-oriented economic policies, which have also contributed to the diversification of fire-fighting factors. Therefore, the number of fire incidents in Korea is increasing every year, and the size of fire is also increasing. There are many causes of fire, such as carelessness and electric accidents.

The main cause of death in a building fire is smoke suffocation. Therefore, if a fire occurs in a building, people in the building should evacuate without taking in as much smoke as possible. People in the building can increase their chances of survival if they can not evacuate and do not inhale as much smoke as possible while waiting in certain places.

For this reason, currently, buildings and public facilities are equipped with a respirator that can prevent the inhalation of smoke. As the respirator, there is known a single-person respirator provided for use by only one person, and a multi-purpose respirator provided for use by multiple persons.

Korean Patent Laid-Open Publication No. 10-2013-0017610 discloses a multi-use respirator, which comprises a compressed oxygen reservoir storing compressed oxygen, a plurality of pressure sensors connected to the compressed oxygen reservoir through a plurality of connection hoses, Masks.

Each of the masks is in close contact with the face of the user and has a breathing space and a buffer space defined therein. The buffer space is connected to the connection hose to receive oxygen from the compressed oxygen container. The user's nose and mouth are inserted into the breathing space.

The partition wall is provided with a plurality of holes and a film type discharge amount adjusting device. When the user breathed in, the emission control device opens the holes, and the oxygen in the buffer space is moved to the breathing space. On the other hand, when the user exhales, the emission control device seals the holes, and thus the air that the user exhales does not move into the buffer space.

A check valve is provided in the breathing space. This check valve allows the user to vent air outside the breathing area, but does not allow the outside air to enter the breathing area.

Korean Patent Laid-Open Publication No. 10-2013-0017610 discloses a respirator in which a plurality of masks are connected to a compressed oxygen container. However, in the respirator of Korean Patent Laid-Open Publication, all the air released by the user is discharged to the outside of the mask, and all the air that the user is resting is supplied from the compressed oxygen container. Therefore, the compressed oxygen container has to be large in the respirator of the Korean patent.

If the compressed oxygen reservoir is large, users will not be able to move or carry it with the compressed oxygen reservoir. Therefore, the users of the fire scene can stay in one place and can use the respirator of the Korean patent, can not carry the respirator, and the firefighter can not carry the respirator and can not move in the fire scene.

The present invention is intended to provide a multi-purpose portable respirator capable of solving such a problem.

The present invention relates to a case for accommodating an oxygen tank storing compressed oxygen; And a plurality of masks respectively connected to the oxygen tank through an oxygen supply hose. Here, each of the masks may include: a face cover configured to cover a face of a user; A carbon dioxide removing unit which is mounted on the face cover and has an exhalation check valve that allows only air to pass through during respiration of the user, and removes carbon dioxide from the exhalation air; And an exhaust pipe connected to the oxygen supply hose and mounted on the face lid, wherein the exhalation air passed through the carbon dioxide removal unit and oxygen supplied from the oxygen supply hose are mixed to form an exhaust air, And a mixing chamber having an inspiration check valve for passing therethrough.

Wherein at least one side wall of the mixing chamber is provided with a deformation wall deformed when the user is breathing, a limit switch for detecting deformation of the deforming wall is installed in the mixing chamber, A controller that opens and closes an oxygen valve for allowing or blocking oxygen supply to the limit switch in accordance with the output of the limit switch is provided.

The case accommodates an air tank storing compressed air and the mixing chamber of each of the masks is connected to the air tank through an air supply hose and the controller supplies air from the air tank to the air supply hose And selectively opens the air valve and the oxygen valve for allowing or blocking the oxygen valve.

The controller opens the oxygen valve a predetermined number of times and then opens the air valve. Alternatively, the mixing chamber may be equipped with an oxygen sensor for sensing an oxygen concentration in the mixing chamber, and the controller may open the oxygen valve if the oxygen concentration sensed by the oxygen sensor is below a reference value, The air valve may be opened.

The carbon dioxide removing unit may include: a storage container containing soda lime; And a plurality of through holes provided in the receiving container to allow the breathing air passing through the vent check valve to move to the mixing chamber through the soda lime.

And the check valve for excretion of carbon dioxide removal includes a through hole provided in a partition wall positioned apart from the container; And a membrane attached to the partition so as to open the through hole when the user exhales and to seal the through hole at the time of inhalation.

The inner space of the mixing chamber is located above the receiving container and communicates with the through hole, and the in-check valve includes a through hole provided in a side wall of the mixing chamber; And a membrane attached to one side wall of the mixing chamber to open the through hole at the time of inhalation of the user and seal the through hole at the time of exhalation.

According to the present invention, the amount of oxygen required by the user is mixed with the amount of air exhaled by the user, so that the amount of oxygen required is very small even if there are several users. Therefore, according to the present invention, the size of the oxygen tank for storing the amount of oxygen used by various users can be reduced to a portable size.

In addition, according to the present invention, since oxygen supply from the oxygen tank is not performed at the time of user's exhalation but at the time of inhalation, the amount of oxygen used is saved, and the size of the oxygen tank can be further miniaturized.

In addition, according to the present invention, since the amount of oxygen supplied to the mixing chamber is controlled, the oxygen concentration of the breathing air in the mixing chamber is prevented from becoming unnecessarily high.

In addition, according to the present invention, since a compressed air at a much lower price than compressed oxygen is used for controlling the amount of oxygen supplied to the mixing chamber, the portable respirator for multiple users can be manufactured at a low cost.

Further, according to the present invention, the water generated in the carbon dioxide removal is not sucked by the user at the time of inhalation.

According to the present invention, oxygen is supplied only to the mask to be used, oxygen is not supplied to an unused mask, and such operation is automatically performed.

1 is a perspective view illustrating a portable respirator for a multi-user according to the present invention.
2 is a sectional view taken along line A-A 'in Fig.
3 is a cross-sectional view taken along line B-B 'in Fig.
FIG. 4 is a circuit diagram showing the interior of the case of the multi-headed portable respirator shown in FIG. 1. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a portable respirator according to the present invention will be described in detail with reference to the drawings. It is to be understood that the terminology or words used herein are not to be construed in an ordinary sense or a dictionary, and that the inventor can properly define the concept of a term to describe its invention in the best possible way And should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

The portable respirator 100 according to the present invention includes a case 110 and a plurality of masks 150 as shown in FIG.

The case 110 accommodates an oxygen tank 120 storing compressed oxygen as shown in FIG. A main hose 126a having an oxygen valve 124 and a pressure reducer 122 constituted by a solenoid valve is connected to an outlet end of the oxygen tank 120. The main hose 126a is connected to an oxygen valve 124 And is connected to the distributor 112 of the case 110 via a plurality of branch wire hoses 126b.

A controller 130 is installed inside the case 110. The controller 130 is connected to the distributor 112 via the wires 132a and is connected to the controller 130 through the other wires 134. [ And is connected to the oxygen valve 124.

Meanwhile, the case 110 is provided with a handle 114 as shown in FIG. 1 so that the user can easily grasp the handle 110. Alternatively, the case 110 may be provided with a band that can be attached to a user's shoulder or waist.

Each of the masks 150 includes a face cover 152, a carbon dioxide removing unit 180, and a mixing chamber 160.

The face cover 152 is a member covering the face of the user and has an inner space 152a into which the nose and mouth of the user are inserted as shown in Fig. In addition, the face cover 152 is provided with a fixing band 154. When the user puts the fixing band 154 on the head, the face cover 152 can be fixed without grasping.

The carbon dioxide removing unit 180 is mounted on the face cover 152 so as to be positioned in front of the face cover 152 and includes a filter and an exhalation check valve.

The filter is for removing carbon dioxide from the user's exhaled air, and includes soda lime 182 and a receiving container 184 for receiving it, as shown in Fig. The receiving container 184 has a rear wall and an upper wall, and a plurality of through holes 184a are provided on the rear wall and the upper wall. Therefore, the exhalation air that has been exhaled by the user and exhaled through the exhalation check valve flows into the through-hole 184a of the rear wall, flows through the soda lime 182, and then flows into the through-hole 184a of the upper wall. The carbon dioxide that has been removed is removed.

The exhalation check valve includes a through hole 186a and a retention membrane 188. The through hole 186a is provided in a partition 186 that is spaced rearward from the rear wall of the container 184. [ The retaining membrane 188 has a larger size than the through hole 186a and its upper end is fixed to a portion of the front surface portion of the partition 186 located above the through hole 186a. Thus, when the user exhales, the exhalation film 188 is lifted to open the through hole 186a, and the exhalation air in the internal space 152a of the facial cover 152 through the open passage hole 186a flows into the receiving container 184, respectively. On the other hand, when the user inhales, the expiratory membrane 188 closes the through hole 186a while closely contacting the partition 186, thereby causing the air toward the accommodating container 184 to move into the internal space 152a of the facial cover 152 I can not.

The mixing chamber 160 is mounted on the front cover 152 so as to be positioned in front of the face cover 152 and is disposed in the receiving container 184 while making the upper wall of the receiving container 184 as a lower wall, As shown in FIG. Therefore, the exhaled air flowing into the through-hole 184a on the upper wall of the container 184 flows into the inner space 160a of the mixing chamber 160. [

On the other hand, water may be generated in the carbon dioxide removing unit 180 because the moisture of the exhaled air can condense in the soda lime 182 to become water or to flow water from the outside. However, when the mixing chamber 160 is positioned above the container 184, even if water is generated in the carbon dioxide removing unit 180, it is possible to prevent the user from sucking the water at the time of inhalation.

A coupling hose 126c extending from the distributor 112 of the case 110 is coupled to the upper wall of the mixing chamber 160. [ The connection hose 126c is connected to the branch hose 126b in the case 110 and forms an oxygen supply hose together with the branch hose 126b and the main hose 126a.

One end of the connecting hose 126c and the distributor 112 are connected to each other by a one-touch fitting method. In this case, the connecting hose 126c can be separated from the distributor 112 , And can be connected to the distributor 112 easily and quickly. The connection hose 126c and the distributor 112 may be connected to each other through a screw coupling method. The connection between the connection hose 126c and the upper wall of the mixing chamber 160 may be as described above.

In the internal space 160a of the mixing chamber 160, the exhalation air introduced from the container 184 and the oxygen introduced from the connection hose 126c are mixed with each other to form the breathing air. Then, the inspiratory air passes through the inspiration check valve and flows into the internal space 152a of the face cover 152. Here, the inspiration check valve includes a through hole 166a and an inspiration film 168 as shown in FIG. The through hole 166a is formed on the rear wall of the mixing chamber 160. The inhalation film 168 is larger than the through hole 166a and the upper end of the inhalation film 168 is connected to the back wall of the mixing chamber 160. [ And is fixed to a portion of the rear surface portion located above the through hole 166a.

When the user inhales, the inspiration membrane 168 is heard to open the passage hole 166a and the breathing air in the mixing chamber 160 internal space 160a through the open passage hole 166a is discharged to the face cover 152. [ And can move toward the inner space 152a. On the other hand, when the user exhales, the inspiratory membrane 168 closes the through-hole 166a while closely contacting the back wall of the mixing chamber 160, so that the exhalation air in the internal space 152a of the face- 160 can not move to the inner space 160a.

The left side wall 162 and the right side wall 164, which are connected to the rear wall of the mixing chamber 160, are provided with a deformed wall which is deformed during breathing of the user. 3, the left and right side walls 162 and 164 of the mixing chamber 160 are convex as shown in FIG. 3 (a) when the user exhales , And when the user inhales, it becomes concave as shown in FIG. 3 (b). It should be understood that the deformed wall may be formed in a different shape such as a corrugated wall if the deformable wall can be deformed during the user's breathing.

The mixing chamber 160 is provided with a limit switch 170 including a body 170a and a lever 170b for deforming the left and right side walls 162 and 164 of the mixing chamber 160. [ The body 170a is installed on the upper wall of the mixing chamber 160 and the lever 170b is rotatably engaged with the body 170a to press the button (not shown) of the body 170a, do. The body 170a is connected to the distributor 112 through a connection wire 132b and the connection wire 132b is connected to the controller 130 through a wire 132a in the case 110. [ In this case, the connection wire 132b can be separated from the distributor 112, and the distributor 112 can be connected to the connector 132b, Can be connected easily and quickly. The coupling between the connection wire 132b and the body 170a may be performed as described above.

When the user exhales and the left and right side walls 162 and 164 of the mixing chamber 160 are convexed, the lever 170b of the limit switch 170 is placed in a state in which the button of the body 170a is not pressed, (130) seals the oxygen valve (124). Therefore, no oxygen is supplied to the inner space 160a of the mixing chamber 160 at the time of exhalation. On the other hand, when the user inhales, the left and right side walls 162 and 164 of the convex mixing chamber 160 are concave. In this process, the lever 170b of the limit switch 170 presses the button of the body 170a do. Then, the controller 130 opens the oxygen valve 124, and oxygen is supplied to the internal space 160a of the mixing chamber 160 at the time of inhalation.

On the other hand, unlike the above, only the side wall (the left side wall 162 as shown) adjacent to the limit switch 170 of the left and right side walls 162, 164 of the mixing chamber 160 may be provided as a loose side wall .

The controller 130 always adjusts the opening degree of the solenoid valve 124 such that oxygen as much as the amount of carbon dioxide removed from the carbon dioxide removing unit 180 flows into the mixing chamber 160. That is, the user's exhalation air is composed of 2% carbon dioxide, 18% oxygen, and 80% other gas. When the exhalation air passes through the carbon dioxide removing unit 180, only 2% The controller 130 always adjusts the opening of the solenoid valve 124 so that the oxygen amount corresponding to 2% flows into the mixing chamber 160. Therefore, the breathing air flowing into the inner space 152a of the face cover 152 through the inspiration check valve is made of 20% oxygen and 80% other gas.

On the other hand, the amount of breathing air passing through the vent check valve can be different each time since the face cap 152 may not be in complete contact with the user's face. For example, when the amount of air to be blown through the vent check valve is 100 when the face cover 152 is fully contacted, if air is not completely adhered to the face, the gap between the face cover 152 and the face of the user The amount of air that passes through the vent check valve is 80 or 90 because of the leak.

However, if the amount of oxygen supplied to the mixing chamber 160 is constant, the oxygen concentration of the breathing air becomes unnecessarily high, although the amount of the breathing air passing through the breath check valve may be different each time. For example, in the case where the quantity of the breathing air passing through the breath check valve is 100 and the quantity of oxygen is supplied to the mixing chamber 160 twice every time, if the amount of the breathing air passing through the breath check valve is 80, Is higher than 20%. The air in the air tank 140 and the oxygen in the oxygen tank 120 are selectively supplied to the mixing chamber 160 .

The air tank 140 stores compressed air containing 20% oxygen and is housed in the case 110. A main hose 146a having an air valve 144 and a pressure reducer 142 connected to an outlet end of the air tank 140 is connected to the air hose 146a, And is connected to the distributor 112 through a plurality of branch hoses 146b.

An upper end of the mixing chamber 160 is coupled with a connection hose 146c extending from the distributor 112. The connection hose 146c forms an air supply hose together with the branch hose 146b and the main hose 146a . Also, the controller 130 is connected to the air valve 144 through the electric wire 134.

One end of the connection hose 146c and the distributor 112 are connected to each other by a one-touch fitting method. In this case, the connection hose 146c can be separated from the distributor 112 , And can be connected to the distributor 112 easily and quickly. The connection hose 146c and the distributor 112 may be connected to each other through a screw coupling method. The connection between the connection hose 146c and the upper wall of the mixing chamber 160 may be as described above.

The selective supply of air and oxygen can take various forms. For example, the controller 130 may open the oxygen valve 124 every inhalation, and may open the air valve 144 at the next inspiration when the number of the openings reaches a predetermined number of times. In this case, the oxygen concentration of the breathing air in the mixing chamber 160 is increased each time the oxygen valve 124 is opened, and then lowered again when the air valve 144 is opened. Therefore, it is prevented that the oxygen concentration of the breathing air becomes unnecessarily high do.

An oxygen sensor 190 may be provided for selective supply of air and oxygen. In this case, the oxygen sensor 190 is mounted on the upper wall of the mixing chamber 160 and senses the oxygen concentration in the inner space 150a of the mixing chamber 160 and outputs the oxygen concentration to the controller 130 through a wire (not shown) . The controller 130 opens only the oxygen valve 124 when the oxygen concentration output from the oxygen sensor 190 is lower than a preset reference value and opens only the air valve 144 if the oxygen concentration exceeds the reference value.

Hereinafter, the operation of the portable respirator 100 will be described.

When a fire occurs, the user wears the mask 150 of the respirator 100 and moves along the escape path while breathing. At this time, one of the users moves carrying the case 110.

If the user's breath is exhaled, the exhalation air flows into the mixing chamber 160 through the exhalation check valve and the carbon dioxide removing unit 180. At this time, since the carbon dioxide of the exhaled air is removed by the carbon dioxide removing unit 180, the breathing air having the carbon dioxide lost flows into the mixing chamber 160.

The oxygen in the oxygen tank 120 and the air in the air tank 140 are selectively supplied to the mixing chamber 160 to form the breathing air together with the breathing air in which the carbon dioxide is lost. After passing through the inspiration check valve, the inspiratory air moves to the inner space 152a of the face cover 152. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

100: Multi-purpose portable respirator 110: Case
112: distributor 120: oxygen tank
124: oxygen valve 126a, 126b, 126c: oxygen supply hose
130: Controller 140: Air tank
144: air valves 146a, 146b, 146c: air supply hose
150: mask 152: face cover
160: mixing chamber 162, 164: deformed wall
166a, 168: an inspiration check valve 170: a limit switch
180: Carbon Dioxide Removal 182: Soda Lime
184: receptacle 186a, 188: exhalation check valve
190: Oxygen sensor

Claims (8)

A case for accommodating an oxygen tank storing compressed oxygen; And
A plurality of masks respectively connected to the oxygen tank through an oxygen supply hose,
Each of the masks includes:
A face cover provided to cover the face of the user;
A carbon dioxide removing unit which is mounted on the face cover and has an exhalation check valve for passing only exhalation air during breathing of the user and removes carbon dioxide from exhalation air passing through the exhalation check valve; And
A deformed wall which is connected to the oxygen supply hose and mounted on the face cover and deforms concavely and concavely when the user exhales at least at one side wall; And an impression check valve which is provided as a mixing site for oxygen supplied from the mixing chamber and which allows only breathing air, which is air in the mixing chamber, to pass during breathing of the user,
Wherein the case is provided with a controller for opening and closing an oxygen valve for allowing or blocking the supply of oxygen from the oxygen tank to the oxygen supply hose according to the shape of the deformed wall. The method according to claim 1,
Wherein the mixing chamber is provided with a limit switch for detecting deformation of the deformed wall, and the controller opens and closes the oxygen valve according to the output of the limit switch. 3. The method of claim 2,
The case accommodates an air tank storing compressed air and the mixing chamber of each of the masks is connected to the air tank through an air supply hose and the controller supplies air from the air tank to the air supply hose An air valve for allowing or blocking the oxygen valve; The method of claim 3,
Wherein the controller opens the oxygen valve a predetermined number of times and then opens the air valve. The method of claim 3,
Wherein the mixing chamber is equipped with an oxygen sensor for sensing an oxygen concentration in the mixing chamber and the controller opens the oxygen valve when the oxygen concentration detected by the oxygen sensor is below a reference value and opens the air valve if the oxygen concentration exceeds the reference value Multipurpose portable respirator. The method according to claim 1,
The carbon dioxide-
A container for containing soda lime; And
And a plurality of through holes provided in the containing container to allow the breathing air passing through the breath check valve to move to the mixing chamber through the soda lime. The method according to claim 6,
The exhalation check valve
A through hole provided in a partition wall positioned apart from the container; And
And a membrane attached to the partition so as to open the through-hole at the time of expiration of the user and seal the through-hole at the time of inhalation. The method according to claim 6,
Wherein an inner space of the mixing chamber is located above the receiving container and communicates with the through hole,
The inhalation check valve
A through hole provided in one side wall of the mixing chamber; And
And a membrane attached to one side wall of the mixing chamber to open the through-hole at the time of inhalation of the user and seal the through-hole at the time of exhalation.

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