WO2022215844A1 - Film-type inhaled air/exhaled air valve and filter cartridge for breathing, in which said film-type inhaled air/exhaled air valve is mounted and inhalation space and exhalation space are separated - Google Patents

Abstract

A frontal respiratory protective gear according to an embodiment of the present invention comprises: a face contact part that includes an external air connection part having an inhaled air duct through which external gas flows in, an exhaled air duct through which internal gas is exhausted to the outside, and an air duct where inhaled air and exhaled air do not mix, and closely contacts the face of a wearer; a face part that is mounted on the face contact part and covers the entire face of the wearer; a protective gear frame that surrounds the face part together with the face contact part; and a filter cartridge that is installed on the upper surface of the protective gear frame and equipped with an air filtration filter.

Description

A filter cartridge for breathing in which a film-type intake/exhaust valve and the film-type intake/exhaust valve are mounted, and an inhalation space and an expiratory space are separated

The present invention relates to a filter cartridge, an air filtration filter, and an intake/exhaust film type valve mounted on a full-face respirator.

Unlike airborne fine dust and airborne bacteria, which generally deteriorate human respiratory health, viruses are transmitted together with droplets or aerosol moisture particles, and the methods of propagation are direct transmission, contact transmission, and air transmission. is divided into Direct propagation is also called droplet propagation, and it transmits to others through droplets, that is, droplets discharged from a patient's conversation or cough. The virus is spread by splashing directly into another person's eyes or nose. And contact transmission is transmitted through physical contact with an intermediate object/person contaminated with the virus contained in the patient's runny nose and droplet water particles. On the other hand, in air propagation, aerosol water particles of less than 1 m, smaller and lighter than droplet water particles, float in the air for a long time without parabolic fall due to gravity in an enclosed space and spread the virus to others.

Therefore, the air filtration filter of the full-face respirator used in medical, health, and quarantine sites for human respiratory viruses is not a parabolic falling droplet moisture particle, but aerosol moisture particles floating in the air for a long time. High performance is required to protect the wearer from radio waves.

In addition, in a situation in which fine dust suspended in the air is getting worse, there are hardly any suitable oxygen supply means to support self-respiration of the elderly and patients with weakened cardiorespiratory function except in hospitals and hospitals. In order to block the spread of viruses contained in droplets or aerosols, an expensive negative pressure system requires an ambulance or an inpatient room, but it is often difficult to apply it to the field.

The present invention provides a protective device for protecting the wearer's respiratory tract from pollutants (or infectious agents) in the air by filtering droplets or aerosol moisture particles containing airborne fine dust and airborne bacteria and viruses in the outside air. There is a purpose.

In addition, an object of the present invention is to provide a function of discharging only the exhaled air including carbon dioxide and water vapor to the outside by filtering viruses contained in droplets and aerosols in the wearer's exhalation.

The filter cartridge for a full-face respirator according to an embodiment of the present invention may communicate with the external air connection part of the upper portion of the front-type respirator.

In addition, the outdoor air connection part may include an intake duct through which external gas flows into and an exhaust duct through which internal gas is discharged to the outside.

In addition, the filter cartridge may include a housing having an open front surface to which the air filtration filter is mounted, and a front panel covering the front surface of the housing to prevent separation of the filter disposed on the front surface of the housing.

In addition, the housing may include a rear surface opposite to the front surface. A plurality of partition walls extending vertically toward the front surface of the housing may be formed on the rear surface of the housing.

In addition, the plurality of partition walls may include a third partition wall and a fourth partition wall that form a flow path so that the wearer's inhalation and exhalation do not mix.

In addition, the third partition wall may include a first plate and a second plate forming a predetermined angle.

In addition, a first expiratory space through which the wearer's exhalation is discharged may be formed by the first plate, the second plate, and the first side surface of the housing of the third partition wall.

In addition, the fourth partition wall may include a first plate and a second plate forming a predetermined angle.

In addition, a second exhalation space through which the wearer's exhalation is discharged may be formed by the first plate, the second plate, and the second side surface of the housing of the fourth partition wall.

In addition, an inhalation inlet space through which the wearer's breath flows may be formed between the first plate of the third partition wall and the first plate of the fourth partition wall.

In addition, the front-type breathing apparatus may include an air curtain forming a first chamber covering the eyes of the wearer while being closely attached to the wearer's face and covering the wearer's eyes and a second chamber covering the nasal passages and oral cavity of the wearer. have.

In addition, the outdoor air connection part may be directly connected to the first chamber, and may have a duct-type structure including a first exhaust duct through which the wearer's exhalation is discharged, a second exhaust duct, and an intake duct for transmitting outdoor air to the wearer.

In addition, the intake duct may be formed between the first exhaust duct and the second exhaust duct.

In addition, the first exhalation space may communicate with the first exhaust duct, the second expiration space may communicate with the second exhaust duct, and the intake duct may communicate with the inhalation inlet space.

In addition, at least a portion of the lower surface of the housing is open, a mesh-shaped support plate capable of gas flow is installed, and one end of the third partition wall and one end of the fourth partition wall may be inserted into the support plate.

In addition, a film-type valve made of a polymer material having elasticity may be installed on the support plate.

In addition, the film-type valve may be divided into a first region, a second region and a third region, and the first region and the third region may be disposed above the support plate.

In addition, the second region may be disposed under the support plate.

In addition, when exhaling, the first region and the third region open the upper surface of the support plate, when inhaling, the first region and the third region cover the upper surface of the support plate, and when inhaling, the second region is the lower surface of the support plate When opened and exhaled, the second region may cover the lower surface of the support plate.

In addition, the front panel includes a rib protruding toward the front of the housing, and the rib is in close contact with the air filtration filter toward the front edge of the housing or the air filtration filter in close contact with at least one of the third to sixth partition walls. can do it

In addition, the full-face respirator according to an embodiment of the present invention may include the filter cartridge described above.

The intake valve for a front-type respirator of the present invention may include an external air connection part including an intake duct through which external gas flows into the inside and an exhaust duct through which internal gas is discharged to the outside, and a protective gear frame for accommodating the external air connection part. have.

In addition, the intake valve is a film type of a soft polymer material having a rectangular shape and elasticity, and may include a first surface on which an adhesive is applied and a second surface on which an adhesive is not applied.

In addition, the lower end of the first surface to which the adhesive is applied is adhesively fixed to the outer surface of the protective gear frame corresponding to the intake duct or is adhesively fixed to the outer surface of the intake duct, and closes the intake duct when the wearer exhales, and the wearer's inhalation may open the intake duct.

The full-face respirator according to another embodiment of the present invention may include the aforementioned film-type intake valve for the full-face respirator.

The present invention protects the wearer's respiratory system from harmful viruses in the outside air through a filter cartridge and an air filtration filter that are directly connected to the eye chamber on the upper surface of the face rather than directly connected to the mouth chamber on the lower surface of the face part of the front-type respirator. It has the advantage of providing a means of protection. Conversely, there is an advantage of providing a means for ventilating and discharging only the exhaled air containing carbon dioxide and water vapor to the outside by filtering viruses contained in droplets and aerosols in the exhaled breath of the wearer of the full-face respirator.

In addition, the present invention separates the exhalation discharge area from which the exhalation is discharged and the inhalation inlet area through which the inhalation is introduced so that carbon dioxide and water vapor discharged together with the wearer's exhaled air are not mixed with the inhaled air. This has the advantage of preventing the exhaled air heated by the greenhouse effect by carbon dioxide and water vapor from being rebreathered into the wearer's inhalation.

In addition, the present invention is an external air having a total of three intake and exhaust ducts connected to the upper face of the face (Eye Chamber) rather than the existing separate direct-connected front-type respirator in which the intake and exhaust valves are integrated in the lower face of the mouth chamber. It has the advantage that it can be installed and applied to all full-face respirators with connections.

1 shows a wearing state of a full-face respirator equipped with a filter cartridge according to an embodiment of the present invention.

Figure 2 shows a face-adhesive part, a face part, and a protective gear frame of the full-face respirator according to an embodiment of the present invention.

Figure 3 shows the air flow inside the full-face respirator according to an embodiment of the present invention.

Figure 4 shows a cross-sectional view of the external air connection part of the face contact part accommodated in the receiving part of the protective gear frame of the front-type respirator according to an embodiment of the present invention.

5 is a view showing the receiving portion of the protective gear frame housing the outdoor air connection unit according to an embodiment of the present invention.

6 shows a filter cartridge in which the housing and the front panel of the present invention are combined.

7 shows a filter cartridge in which the housing and the front panel of the present invention are separated.

8 shows a filter cartridge equipped with a film-type valve of the present invention.

Figure 9 shows a support plate in which the partition wall insert of the present invention is formed.

10 shows a film-type valve before folding according to an embodiment of the present invention;

11 shows a film-type valve after folding according to an embodiment of the present invention;

12 shows a film-type valve disposed above the support plate.

13 shows a film-type valve disposed under the support plate.

14 shows a filter cartridge equipped with an air filtration filter of the present invention.

15 shows a film-type intake valve for a front-type respirator of the present invention.

16 shows a film-type intake valve for a front-type respirator that is adhesively fixed to the intake duct of the present invention.

Figure 17 shows a film-type intake valve for a front-type respirator that is adhesively fixed to the receiving part of the protective equipment frame of the present invention of the present invention.

The full-face respirator of the present invention may include a face-adhering part 200 , a face part 100 , a protective gear frame 300 , a filter cartridge 400 , and an air filtering filter 500 .

The full-face respirator may be separately manufactured to protect the wearer's respiratory tract, or may be a commercially available full-face snorkel mask.

<Face adhesion part 200>

The face contact unit 200 according to an embodiment of the present invention is in close contact with the wearer's face. The face contact unit 200 is made of an elastic material to adhere the face-type respirator to the face to prevent air from entering or discharging into and out of the protection device. The face adhesion part 200 is preferably made of a conductive silicon material containing copper nanopowder, so that dust in the air does not stick to it and can provide an antibacterial function.

The face contact unit 200 may include a face unit mounting groove 210 , an air curtain 220 , and an outdoor air connection unit 230 .

1. Face mounting groove (210)

The face part 100 to be described later is mounted in the face part mounting groove 210 . An air duct is formed in the face part mounting groove 210 that is mounted with the face part 100 so that exhaled breath can be discharged to the outside through the external air connection part 230 . The outdoor air connection unit 230 starts at the wearer's mouth, passes through the ear, and is connected to the outdoor air connection unit 230 to be described later.

In addition, the first outer surface of the face mounting groove 210 wraps around the wearer's face to prevent unfiltered external air from flowing into the wearer's nasal cavity and oral cavity.

2. Air Curtain (220)

The air curtain 220 according to an embodiment of the present invention includes the first chamber 221, which is an eye chamber that crosses the wearer's face and covers the wearer's eyes, and the wearer's nasal cavity (nose) and oral cavity (mouth). ) to form a second chamber 222 that is a mouth chamber (Mouth Chamber) covering the.

The first chamber 221 is formed by connecting the upper portion of the face part mounting groove 210 and the air curtain 220 .

The second chamber 222 is formed by connecting the lower portion of the face mounting groove 210 and the air curtain 220 .

At least one intake valve 223 is formed in the air curtain 220 . The intake valve formed on the air curtain 220 is referred to as a third intake valve 223 .

When the wearer breathes in, outside air is introduced into the first chamber 221 through the outside air connection part 230 . The outside air introduced into the first chamber 221 is transferred to the second chamber 222 through the third intake valve 223 .

Conversely, when the wearer exhales, carbon dioxide and water vapor contained in the exhalation are discharged to the outside through the outdoor air connection part 230 along the face part mounting groove 210 . In addition, the air containing viruses and other microorganisms in the exhaled air is filtered through the air filtration filter 500 of the filter cartridge 400 directly connected to the outdoor air connection part 230 along the face part mounting groove 210 and discharged to the outside. do.

3. Outdoor air connection unit (230)

The outdoor air connection part 230 is formed to protrude upward from the top surface of the face contact part 200 . The external air connection part 230 is a total of three air duct structures including one intake duct 232 and two exhaust ducts 231 and 233 that serve as passages for gas outside and inside the front-type respirator. . Here, the two exhaust ducts are referred to as a first exhaust duct 231 and a second exhaust duct 233 , respectively.

A partition wall is installed inside the external air connection part 230 so that the inhalation and exhalation do not mix. Referring to FIG. 4 , one intake duct 232 and two exhaust ducts 231 and 232 are formed through the first partition wall 230a and the second partition wall 230b. The intake duct 232 is formed between the first exhaust duct 231 and the second exhaust duct 233 .

When the wearer breathes in, external air flows into the front-type respirator through the intake duct 232, and when the wearer breathes out, the front-type breathing through the first and second exhaust ducts 231 and 233 The gas inside the protective equipment is discharged to the outside air.

When the wearer breathes in, external air is introduced into the front-type respirator through the external air connection part 230 . Conversely, when the wearer is exhaling, the carbon dioxide and water vapor contained in the exhalation inside the front-type respirator are discharged to the outside through the outdoor air connection part 230 along the face part mounting groove 210, and the air containing viruses and other microorganisms is It is filtered through the air filtration filter 500 of the filter cartridge 400 directly connected to the outdoor air connection part 230 along the face part mounting groove 210 and discharged to the outside.

The first exhaust duct 231 communicates with a first expiratory discharge space A1 to be described later, and the second exhaust duct 233 communicates with a second exhalation discharge space A2 to be described later, and the one intake The duct 232 communicates with the inhalation suction space (B) to be described later. This configuration works together with the intake/exhaust film type valve 440 to be described later so that the wearer's inhalation and exhalation do not mix.

<Face 100>

The face part 100 covers the entire face of the wearer and is made of a transparent material so that the wearer can see the outside. The face part 100 is a transparent thermoplastic and/or amorphous polymer material plastic having an area covering the entire face, such as a forehead, eyes, nose, mouth, and chin.

<Protection Frame (300)>

The protective gear frame 300 surrounds the entire outer surface of the face part 100 together with the face contact part 200, and when the wearer wears the front-type respirator, watertightness and airtightness can be maintained inside the front-type respirator. .

In addition, a receiving part 310 protruding from the protective gear frame 300 to accommodate the outdoor air connection part 230 of the face contact part 200 is formed on the uppermost surface of the protective gear frame 300 . The accommodating part 310 is hollow inside so as to surround the outer surface of the outdoor air connection part 230 .

A filter cartridge 400 to be described later is fitted to the outer surface of the receiving part 310 . The inner surface of the filter cartridge 400 is fitted in contact with the outer surface of the receiving part 310 .

In addition, an insertion protrusion 311 that is inserted into and coupled to the filter cartridge insertion hole 418a formed in the protrusion 418 of the filter cartridge 400 is formed on the lower outer surface of the receiving portion 310 . The insertion protrusion 311 is inserted into the filter cartridge insertion hole 418a to increase the coupling force between the filter cartridge 400 and the receiving part 310 .

<Filter cartridge (400)>

The filter cartridge 400 according to an embodiment of the present invention includes a housing 410 , a front panel 420 , and a support plate 430 .

The filter cartridge 400 of the present invention may be mounted on a commercially available full-face snorkeling mask as well as a full-face respirator specially manufactured to protect the wearer's respiratory system.

In particular, it can be mounted on a full-face type snorkel mask manufactured to have a total of three intake and exhaust ducts connected to the upper face of the face and a commercial full-face type snorkeling mask.

1. Housing (410)

The housing 410 includes a front surface 411 , a rear surface 412 , an upper surface 413 , a lower surface 414 , a first side surface 415 , a second side surface 416 , a lower extension part 417 , and a protrusion part 418 . ) is included.

(1) Housing front (411)

At least a part of the front surface 411 of the housing 410 is open. Referring to FIG. 7 , the cross-section of the front side of the housing 411 is rectangular, but is not necessarily limited to a rectangular shape. The front side of the housing 411 is cut open except for the rim.

An air filtration filter 500 is mounted on the front side of the housing 411 . The air filtration filter 500 filters dust, viruses, etc. contained in outdoor air and delivers it to the wearer. In addition, the air filtration filter 500 can prevent the virus from being released to the outside by filtering the virus contained in the droplets and aerosol when the exhaled air containing carbon dioxide and water vapor in the wearer's exhalation is ventilated.

(2) Lower housing (414)

The lower surface 414 of the housing 410 is disposed on the outside air connection part 230 side when the filter cartridge 400 is connected to the outside air connection part 230 and communicates with the outside air connection part 230 .

At least a portion of the housing lower surface 414 is opened to deliver outside air to the outside air connection unit 230, and from the outside air connection unit 230, droplets and aerosols together with exhaled air containing carbon dioxide and water vapor contained in the wearer's exhalation. is delivered

A support plate 430 capable of flowing gas is installed on the lower surface of the housing 414 . A plurality of holes are formed in the support plate 430 in the form of a mesh, so that gas can flow in or out according to the wearer's inhalation and exhalation. The support plate 430 is a support plate in the form of a mesh, and a film-type valve 440 that is opened according to inhalation and exhalation to be described later may be installed.

The mesh-shaped support plate 430 may include a plurality of partition wall insertion portions 431 and 432 into which an end of a third partition wall 412a1 and an end of a fourth partition wall 412b1, which will be described later, are inserted.

A lower extension portion 417 extending downward and having a hollow shape is formed at a lower end of the lower surface of the housing 414 . The lower extension portion 417 may be fitted so that the inner surface is in contact with the outer surface of the receiving portion 310 of the protective equipment frame 300 .

In addition, a protrusion 418 extending further downward is formed on the outer surface of the lower extension part 417 , and an insertion protrusion 311 of the receiving part 310 of the protective gear frame 300 is formed on the protrusion 418 . A filter cartridge insertion hole (418a) to be inserted is formed.

(3) rear of housing (412)

The housing rear surface 412 faces the housing front surface 411 .

A third partition wall 412a and a fourth partition wall 412b are formed on the rear surface of the housing 412 to form a flow path so that the wearer's inhalation and exhalation do not mix. The third partition wall 412a has a '┐' shape, and the fourth partition wall 412b has a '┌' shape. The third partition wall 412a and the fourth partition wall 412b are spaced apart from each other.

The third partition wall 412a extends vertically from the housing rear surface 412 toward the housing front surface 411 . The third partition wall 412a includes a first plate 412a1 and a second plate 412a2. The first plate 412a1 of the third partition wall 412a and the second plate 412a2 of the third partition wall 412a meet at a predetermined angle. Preferably, the first plate 412a1 of the third partition wall 412a and the second plate 412a2 of the third partition wall meet vertically.

The first plate 412a1 of the third partition wall 412a may be inserted into the partition wall insertion part 431 of the mesh-shaped support plate 430 . Preferably, both sides of the lower end of the first plate 412a1 may be bent inward to be inserted into the partition wall insert 431 . One end of the second plate 412a2 of the third partition wall 412a meets the first side surface 415 of the housing 410 .

The fourth partition wall 412b extends vertically from the housing rear surface 412 toward the housing front surface 411 like the third partition wall 412a. The fourth partition wall 412b includes a first plate 412b1 and a second plate 412b2. The first plate 412b1 of the fourth partition wall 412b and the second plate 412b2 of the fourth partition wall 412b meet at a predetermined angle. Preferably, the first plate 412b1 of the fourth partition wall 412b and the second plate 412b2 of the fourth partition wall 412b meet vertically.

One end of the first plate 412b1 of the fourth partition wall may be inserted into the partition wall insertion part 432 of the mesh-shaped support plate 430 . Preferably, both sides of the lower end of the first plate 412b1 of the fourth partition wall may be bent inward to be inserted into the partition wall insertion part 432 .

One end of the second plate 412b2 of the fourth partition meets the second side surface 416 of the housing 410 . The second side 416 of the housing 410 faces the first side 415 of the housing 410 .

A first expiratory discharge space A1 through which exhalation is discharged is formed by the third partition wall 412a and the first side surface 415 of the housing. In addition, a second expiratory discharge space (A2) through which exhalation is also discharged is formed by the fourth partition wall (412b) and the second side surface 416 of the housing.

Some of the exhalation is introduced from the open space of the housing lower surface 414 on the side of the first side 415 . The exhaled breath introduced in this way is blocked by the '┐'-shaped third partition wall 412a and the first side surface 415 of the housing, so that it cannot be discharged toward the upper part of the housing 410 and the second side 416, and it is not discharged toward the front side of the housing 411. is emitted

The remaining exhalation is introduced from the open space of the lower surface of the housing 414 on the second side 416 side. The exhaled breath introduced in this way is blocked by the '┌'-shaped fourth partition wall 412b and the second side surface 416 of the housing, so that it cannot be discharged toward the upper part and the second side surface 416 of the housing 410 and is directed to the front side of the housing 411. is emitted

As described above, the present invention separates the exhalation discharge space (A1) through which the exhalation is discharged and the inhalation inlet space (B) through which the exhalation is discharged through the partition walls (412a, 412b) formed in the filter cartridge 400, so that carbon dioxide and water vapor It has the advantage of preventing the exhaled air heated by the greenhouse effect from being rebreathered by the wearer's inhalation.

A fifth partition wall (412c) for supporting the air filtering filter (500) to prevent the air filtering filter (500) from being bent when the air filtering filter (500) is mounted on the housing front (411) on the rear side of the housing (412) and a sixth partition wall 412d.

The fifth partition wall 412c and the sixth partition wall 412d extend vertically from the housing rear surface 412 toward the housing front surface 411 . The fifth partition wall 412c and the sixth partition wall 412d have a straight cross-section, and the fifth partition wall 412c and the sixth partition wall 412d face each other.

One end of the fifth partition wall 412c meets the upper surface 413 of the housing, and the other end of the fifth partition wall 412c meets the first plate 412a1 of the third partition wall 412a.

One end of the sixth partition wall 412d meets the housing upper surface 413 , and the other end of the sixth partition wall 412d meets the first plate 412b1 of the fourth partition wall 412b.

(4) upper surface of housing

The housing upper surface 413 according to an embodiment of the present invention has a closed structure and faces the housing lower surface 414 .

An insertion groove 413a into which the front panel protrusion 421 is inserted is formed on the upper surface of the housing. The front panel protrusion 421 is inserted into the insertion groove 413a to prevent the front panel 420 from being separated from the housing front 411 .

<Front panel 420>

The front panel 420 of the present invention is hinged with the housing 410 to cover the housing front 411 in an opening/closing form.

A hinge shaft may be formed on the front panel 420 , and hinge shaft insertion grooves into which the hinge shaft is inserted may be formed on both sides of the housing lower surface 414 . Conversely, a hinge shaft may be formed on the lower surface of the housing 414 , and hinge shaft insertion grooves into which the hinge shaft is inserted may be formed on both sides of the front panel 420 .

A fixing protrusion 421 is formed on the upper portion of the front panel 420 . When the fixing protrusion 421, the front panel 420 is hinged to the housing front 411, it is inserted into the insertion groove 413a formed on the upper surface of the housing to increase the coupling force between the housing 410 and the front panel 420. .

The front panel 420 is formed with a plurality of air flow holes for introducing outside air into the front-type respirator and discharging the wearer's exhaled breath to the outside of the front-type respirator via the air filtration filter 500 .

The front panel 420 may include a spoke 422 protruding toward the housing front 411 .

The rib 422 prevents separation of the air filter 500 and includes at least one of the plurality of partition walls 412a to 412d formed on the front housing 411 rim or the filter cartridge 400 and the air filter 500 can increase adhesion.

The rib 422 is by adhering the air filtration filter 500 to the edge of the housing front 411, or by adhering the air filtration filter 500 to the plurality of partition walls 412a to 412d formed in the housing 410 toward the side, By preventing the air filtering filter 500 from being lifted or bent according to the wearer's breathing, the filtering effect is enhanced by preventing the inflow or outflow of unfiltered air.

<Film-type valve 440>

Referring to FIGS. 8, 12, and 13 , the film valve 440 is fitted to the support plate 430 in the form of a mesh. The film-type valve 440 is made of a single film, and an area to be opened according to inhalation and exhalation is distinguished.

Referring to FIG. 10 , a first cut-out portion 444a cut toward the other end is formed in the center of one end of the film-type valve 440 . The first cutout portion 444a is formed so that one end of the film valve 440 is divided into a first area 441 and a third area 443 . The first cut-out portion 444a has a constant width and length.

In addition, a second cut-out portion 444b and a third cut-out portion 444c cut toward one end of the film-type valve 440 are formed at the other end of the film-type valve 440 . The second cut-out portion 444b and the third cut-out portion 444c are formed on the left and right sides of the other end of the film-type valve 440 . Due to the second cut-out 444b and the third cut-out 444c formed on the left and right sides of the other end of the film-type valve 440, only the middle portion of the other end of the film-type valve remains, and the remaining portion is used as the second region 442. ) is called The second cut-out portion 444b has a constant width and length, and the third cut-out portion 444c also has a constant width and length.

Referring to FIG. 11 , in the film-type valve 440 , the second region 442 has an end of the first cut-out 444a cut from one end of the film-type valve 440 toward the other end as a fold line A. ) may be folded to go under the first region and the third region 443 .

Referring to FIG. 12 , when folded in this way, the first region 441 is disposed on the support plate 430 facing the second plate 412a2 of the third partition wall. The third region 443 is disposed on the support plate 430 facing the second plate 412b2 of the fourth partition wall.

When inhaling, the first area 441 and the third area 443 close the upper surface of the support plate 430 in the form of a mesh so that outside air cannot flow into the first exhalation discharge space A1 and the second exhalation discharge space A2. let it do In addition, when the second area 442 is inhaled, the lower surface of the support plate 430 in the form of a mesh that is closed to the second area 442 is opened while the second area 442 is pushed down, and the external air introduced through the front surface of the housing 411 is front-type breathing. flows into the protective gear.

Upon inhalation, outside air is introduced through the air flow port of the front panel 420 , filtered through the air filtration filter 500 , and then introduced into the open space of the housing front 411 . As described above, the first area 441 and the third area 443 of the air filtration filter 500 close the upper surface of the support plate 430 during inhalation as described above, so that the outside air is discharged into the first exhalation discharge space A1 and the second exhalation. It cannot flow into the space (A2). Instead, outside air is introduced into the inhalation inlet space B, which is a spaced apart space between the first plate 412a1 of the third partition and the first plate 412b1 of the fourth partition. The air introduced into the inhalation inlet space (B) in this way is introduced into the respirator through the outdoor air connection part 230 while the lower surface of the support plate 430 closed to the second region 442 is opened.

During exhalation, the first region 441 and the third region 443 rise above the support plate 430 and are spaced apart from the support plate 430 in the form of a mesh covered by the first region 441 and the third region 443 . At least a portion of the support plate 430 of the open. Accordingly, the gas contained in the wearer's exhalation is introduced into the first exhalation discharge space (A1) and the second exhalation discharge space (A2), and is filtered through the air filter 500 through the open housing front surface 411. Then, it is discharged to the outside through the air flow port of the front panel 420 .

Referring to FIG. 13 , the second region 442 is a mesh-shaped support plate 430 corresponding to a space spaced apart between the first plate 412a1 of the third partition wall and the first plate 412b1 of the fourth partition wall. is placed under the When the wearer exhales, the second region 442 covers the lower surface of the support plate 430 to prevent the wearer's exhalation from flowing into the front-type respirator.

<Film-type intake valve for front-type respirator (600)>

According to another embodiment of the present invention, a film-type intake valve 600 for a front-type respirator is attached to the outdoor air connection part 230 or the receiving part 310 of the protective equipment frame, so that when the wearer breathes in, the intake of the outdoor air connection part 230 . By opening the duct 232 and closing the intake duct 232 when the wearer exhales, it is possible to prevent the wearer's exhalation from being discharged to the outside.

The film-type intake valve 600 is a rectangle with a vertical length longer than a horizontal one. The material of the film-type intake valve 600 may be elastic soft polymer.

The film-type intake valve 600 includes a first surface and a second surface. The adhesive 610 is applied to the lower end of the first surface of the film-type intake valve 600, but the adhesive 610 is not applied to the second surface.

In the film-type intake valve 600 , the lower end of the first surface to which the adhesive 610 is applied is adhered to the outer surface of the receiving part 310 of the protective gear frame at a position corresponding to the intake duct 232 of the external air connection part 230 . It is fixed or adhesively fixed to the outer surface of the intake duct (232).

The upper end of the film-type intake valve 600 is a vibration plate, and when the wearer breathes in, goes down into the first chamber 221 , which is an eye chamber, and the intake duct 232 is opened to introduce outside air into the inside.

Conversely, when exhaling, the upper end of the film-type intake valve 600 is restored according to elasticity and rises upward, blocking the intake duct 232 of the outdoor air connection part 230 to prevent the wearer's exhalation from being emitted to the outside.

The film-type intake valve 600 prevents droplets, viruses, etc. contained in the wearer's exhalation from being discharged to the outside when the wearer is infected with a virus, and has an advantage that it can be used as a substitute for a filter cartridge with a simple structure.

Claims (9)

1. In the filter cartridge communicating with the external air connection part of the upper part of the front-type respirator,

   The external air connection part includes an intake duct through which external gas flows into the interior and an exhaust duct through which internal gas is discharged to the outside,

   the filter cartridge

   A housing with an open front and an air filter

   A front panel covering the front of the housing to prevent separation of the filter disposed on the front of the housing,

   The housing includes a rear surface opposite to the front surface,

   A filter cartridge for a front-type respirator in which a plurality of partition walls extending vertically toward the front of the housing are formed on the rear of the housing.
2. According to claim 1,

   The plurality of partition walls include a third partition wall and a fourth partition wall that form a flow path so that the wearer's inhalation and exhalation do not mix,

   The third partition wall includes a first plate and a second plate forming a predetermined angle,

   A first exhalation space through which the wearer's exhalation is discharged is formed by the first plate, the second plate, and the first side surface of the housing of the third partition wall,

   The fourth partition wall includes a first plate and a second plate forming a predetermined angle,

   A second exhalation space through which the wearer's exhalation is discharged is formed by the first plate, the second plate, and the second side surface of the housing of the fourth partition wall,

   A filter cartridge for a front-type respirator, characterized in that between the first plate of the third partition wall and the first plate of the fourth partition wall, an inhalation inlet space through which the wearer's breath flows in is formed.
3. 3. The method of claim 2,

   The front-type breathing apparatus is

   In close contact with the wearer's face, it crosses the wearer's face and includes an air curtain forming a first chamber covering the wearer's eyes and a second chamber covering the wearer's nasal cavity and oral cavity,

   The external air connection part

   directly connected to the first chamber,

   It is a duct-type structure including a first exhaust duct through which the wearer's exhalation is discharged, a second exhaust duct, and an intake duct for transmitting outside air to the wearer,

   The intake duct is formed between the first exhaust duct and the second exhaust duct,

   The first exhalation space communicates with the first exhaust duct, the second expiration space communicates with the second exhaust duct, and the intake duct communicates with the inhalation inlet space. filter cartridge.
4. 3. The method of claim 2,

   The lower surface of the housing is

   at least part of it is open,

   A support plate in the form of a mesh that allows gas to flow is installed.

   A filter cartridge for a full-face respirator, characterized in that one end of the third partition wall and one end of the fourth partition wall are inserted into the support plate.
5. 5. The method of claim 4,

   A film-type valve made of a polymer material having elasticity is installed on the support plate,

   The film-type valve is divided into a first region, a second region and a third region,

   The first region and the third region are disposed above the support plate, and the second region is disposed under the support plate,

   When exhaling, the first region and the third region open the upper surface of the support plate, and during inhalation, the first region and the third region cover the upper surface of the support plate,

   When inhaling, the second region opens the lower surface of the support plate, and when exhaling, the second region covers the lower surface of the support plate.
6. 3. The method of claim 2,

   The front panel includes a spoke protruding toward the front of the housing,

   the above-mentioned

   Adhere the air filter filter to the front edge of the housing or

   A filter cartridge for a full-face respirator, characterized in that the air filtration filter is in close contact with at least one of the third to sixth partition walls.
7. A full-face respirator comprising the filter cartridge of any one of claims 1 to 6.
8. In the intake valve for a front-type respirator comprising an external air connection part comprising an intake duct through which external gas is introduced into the interior and an exhaust duct through which internal gas is discharged to the outside, and a protective equipment frame for accommodating the external air connection part,

   The intake valve is

   It is a film type of soft polymer material with elasticity in the shape of a rectangle.

   It includes a first side to which an adhesive is applied at the bottom and a second side to which an adhesive is not applied,

   The lower end of the first surface to which the adhesive is applied is adhesively fixed to the outer surface of the protective gear frame corresponding to the intake duct or is adhesively fixed to the outer surface of the intake duct,

   Film-type intake valve for a front-type respirator, characterized in that closing the intake duct when the wearer exhales and opening the intake duct when the wearer breathes in.
9. A full-face respirator comprising the film-type intake valve for the full-face respirator of claim 8

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