Breathable mask and body thereof

Abstract

The utility model provides a breathable mask and a body thereof. The body comprises a main frame, a lens and a waterproof sealing skirt. The waterproof sealing skirt is provided with a spacer which divides the interior of the body into an upper chamber and a lower chamber. When the user wears the breathable mask, the spacer sits over the user's nose, while the user's eyes are housed in the upper chamber and the user's nose and mouth are housed in the lower chamber. The waterproof sealing skirt further comprises a bridging piece which stretches across the lower chamber and divides the lower chamber into a nasal chamber and a mouth chamber located below the nasal chamber. When the breathable mask is worn, the nose of the user is accommodated in the nasal chamber, and the mouth of the user is accommodated in the oral chamber. The bridging piece is provided with an opening and an oral-nasal one-way valve adjacent to the opening. The oral-nasal one-way valve only allows one-way fluid communication from the nasal chamber to the oral chamber.

Description

Technical Field

[0001] The utility model relates to a full-face mask for water activities, in particular to a mask for snorkeling, which can be breathed through both the nose and the mouth. Background Art

[0002] Some current full-face snorkel masks (FFSM) have adopted an intake and exhaust split design. In this design, the lower chamber of the mask (the chamber that covers the mouth and nose) is connected to the exhaust tunnel set along the edge of the mask body. When the user is snorkeling underwater, if he wants to drain the water in the mask, he must use his mouth to exhale vigorously to make it pass through the drain valve and overcome the strong water pressure outside to succeed.

[0003] However, because the lower chamber of the mask needs to accommodate the user's nose and mouth, the lower chamber still occupies a considerable volume, and the lower chamber is interconnected with the exhaust tunnel, and the actual path of the exhaust tunnel is quite long, so the actual space of the lower chamber cannot be controlled as expected. Therefore, when the user wants to drain water by exhaling deeply, the exhalation pressure created in this space is obviously insufficient, not only does it fail to overcome the water pressure to successfully drain water, but it also brings the accumulated water into the exhaust tunnel at the edge of the mask body and stays there. When the user finishes exhaling, the accumulated water naturally flows back into the mask body, and in fact the accumulated water is not completely discharged.

[0004] In other words, the FFSM design generally has poor drainage efficiency during underwater activities. Users must surface and spit out the accumulated water or take off the mask to pour out the accumulated water, which is quite troublesome and greatly reduces the fun of snorkeling.

[0005] In view of this, designing a snorkeling device that can partially or fully solve the above problems has become a goal that the industry strives to pursue. Utility Model Content

[0006] The applicant has significantly improved the above problem in the case of U.S. patent application No. 18 / 128,677. Specifically, the application is to divide the lower chamber into a nasal chamber and an oral chamber, that is, to provide a bridge to form a nasal chamber and a mouth chamber. In some embodiments, a mouth-nasal one-way valve can be provided on the bridge to allow only one-way fluid communication from the nasal chamber to the oral chamber, and to connect the exhaust channel with the nasal chamber (not connected with the oral chamber), so that the oral chamber becomes an independent chamber with a very small volume. Therefore, when the user exhales to drain water by breathing out, this small independent chamber will provide a lot of pressure, which can easily overcome the water pressure and successfully drain water. Moreover, because the oral chamber and the exhaust tunnel are not interconnected, there is no pipeline to bring the accumulated water into the exhaust tunnel and then flow back to the oral chamber. However, with such a design, the user can certainly inhale through the mouth (bringing fresh air from the nasal chamber to the oral chamber), but is restricted in exhaling and must exhale through the nose instead. This will be a little inconvenient for users who are accustomed to breathing through the mouth, and it is necessary to think about further improvement.

[0007] Based on the above reasons, one purpose of the utility model is to provide a respirable mask, in which a bridge is added to the lower chamber accommodating the nose and mouth, so as to further separate the lower chamber into a nasal chamber and an oral chamber, and guide the intake airflow to the nasal chamber, and the exhaust airflow is also guided out from the nasal chamber. In addition, there is a conditional connection between the nasal chamber and the oral chamber, for example, an opening and an oral-nasal one-way valve that only allows fluid to flow from the nasal chamber to the oral chamber are allowed to be provided on the bridge. Under this intake and exhaust diversion structure, in addition to the user being able to breathe naturally through the nose, when the user wants to inhale through the mouth, fresh air can be brought from the outside through the intake pipe, the upper chamber, and the intake one-way valve in sequence into the nasal chamber, and then through the opening on the bridge and the oral-nasal one-way valve, the fresh air is brought into the intake chamber for inhalation by the mouth. In addition, when the user wants to exhale through the mouth, the dirty air can enter the nasal chamber in the opposite direction through the opening of the bridge, quickly enter the exhaust passage, and then pass through the exhaust pipe to be discharged.

[0008] In addition, when the user wants to expel the water in the mask and exhales through the mouth, the exhaust airflow cannot escape from the "limited area" opening on the bridge piece at high pressure, high speed and short time. Instead, it tends to overcome the water pressure and be discharged from the drain valve, taking the accumulated water out with it. Therefore, even if a little accumulated water splashes upward from the opening into the nasal chamber, it will not cause discomfort to the nose.

[0009] To achieve the above-mentioned purpose, the utility model discloses a respirable mask, which includes a body and a breathing tube. The breathing tube is in communication with an internal fluid of the body. The breathing tube includes an air inlet pipe and an exhaust pipe independent of the air inlet pipe. The body includes a main frame, a lens, a waterproof sealing skirt, an air inlet passage and an exhaust passage. The lens is embedded in the main frame. The waterproof sealing skirt is at least partially embedded with the main frame and the lens. The waterproof sealing skirt can fit the face of a user. The waterproof sealing skirt has a spacer, which divides the interior of the body into an upper chamber and a lower chamber, so that when the user wears the respirable mask through a fastening device, the spacer is located above the nose of the user, and the eyes of the user are accommodated in the upper chamber, and the nose and mouth of the user are accommodated in the lower chamber. The air inlet passage is formed from the air inlet pipe to the lower chamber. The exhaust passage is formed from the lower chamber to the exhaust pipe. The waterproof sealing skirt also includes a bridge piece, which spans across the lower chamber, and divides the lower chamber into a nasal chamber and a mouth chamber located below the nasal chamber, so that when the user wears the respirable mask, the user's nose is accommodated in the nasal chamber, and the user's mouth is accommodated in the mouth chamber. The air inlet channel is in fluid communication with the nasal chamber, the exhaust channel is in fluid communication with the nasal chamber, and the nasal chamber and the mouth chamber are suitable for being in fluid communication through the bridge piece. The bridge piece has an opening and a mouth-nose one-way valve adjacent to the opening. The mouth-nose one-way valve only allows the nasal chamber to be in one-way fluid communication with the mouth chamber.

[0010] In order to achieve the above-mentioned purpose, the utility model also discloses a body of a respirable mask, which includes a main frame, a lens and a waterproof sealing skirt. The lens is embedded in the main frame. The waterproof sealing skirt is at least partially embedded with the main frame and the lens. The waterproof sealing skirt can fit the face of a user. The waterproof sealing skirt has a spacer that divides the interior of the body into an upper chamber and a lower chamber, so that when the user wears the respirable mask through a fastening device, the spacer is located above the nose of the user, and the eyes of the user are accommodated in the upper chamber, and the nose and mouth of the user are accommodated in the lower chamber. The waterproof sealing skirt also includes a bridge member that spans the lower chamber and divides the lower chamber into a nasal chamber and a mouth chamber located below the nasal chamber, so that when the user wears the respirable mask, the nose of the user is accommodated in the nasal chamber, and the mouth of the user is accommodated in the mouth chamber. The bridge member has an opening and an oral-nasal one-way valve adjacent to the opening, wherein the oral-nasal one-way valve only allows one-way fluid communication from the nasal chamber to the oral chamber.

[0011] In one example, when the user wears the respirator, the mouth-nose one-way valve is positioned closer to the user's nostrils than the opening is positioned away from the user's nostrils.

[0012] In one example, the total area of ​​the opening is between 60 and 200 square millimeters (mm 2 )between.

[0013] In one example, the opening has an inner boundary, and a distance between the inner boundary and a central inner edge of the bridge component is between 20 and 80 mm.

[0014] In one example, the distance from the inner boundary to the central inner edge is between 20 and 50 mm.

[0015] In one example, the opening is formed by a plurality of openings spaced apart from each other.

[0016] In one example, the oral-nasal one-way valve has a central fixed portion and two valve plates extending outward from the central fixed portion, the central fixed portion is fixed on the bridge member, and the two valve plates are opened only when airflow from the nasal chamber to the oral chamber is allowed to pass.

[0017] In one example, the exhaust channel includes an exhaust tunnel, which is defined by the waterproof sealing skirt and an inner surface of the lens and extends along the outer edge of the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A It is a front view schematic diagram of a breathable mask according to an embodiment of the present invention.

[0019] Figure 1B For along Figure 1A A rear view schematically obtained by section line 1b-1b.

[0020] Figure 2 for Figure 1B A sagittal cross-section of a respirator mask showing the spatial relationship between the user and the respirator mask when the user wears the respirator mask.

[0021] Figure 3A for Figure 1B A coronal cross-section of a respirator mask showing the inlet airflow when a user inhales through the mouth and / or nose.

[0022] Figure 3B Also Figure 1B A coronal cross-section of a respirator mask showing the exhaust flow when a user exhales through the mouth and / or nose.

[0023] Figure 3C for Figure 1B Sagittal cross-section of a respirator mask showing the exhaust flow when a user exhales naturally through the mouth.

[0024] Figure 4A for Figure 1BA coronal cross-section of a respirator mask showing the exhaust flow when the user exhales widely through the mouth.

[0025] Figure 4B for Figure 1B Sagittal cross-section of a respirator mask showing that when the user exhales through the mouth, only a small amount of air passes through the opening, while most of the air and accumulated water flow out through the drain valve.

[0026] Figure 5 for Figure 1B Sagittal cross-section of a respirator mask showing the opening formed on the bridge piece and the spatial structure of the oral and nasal one-way valve.

[0027] The reference numerals are as follows:

[0028] 1: Breathable mask

[0029] 11: Breathing tube

[0030] 13: Ontology

[0031] 13a: Main frame

[0032] 13b: Lens

[0033] 13c: Waterproof sealing skirt

[0034] 13c1: Spacer

[0035] 13c2: Bridge piece

[0036] 13d: Intake check valve

[0037] 13e: Mouth and nose check valve

[0038] 13f: Drain valve

[0039] 13e1: Central fixed part

[0040] 13e2: Valve plate

[0041] 20: Opening

[0042] 112: Intake pipe

[0043] 114: Exhaust pipe

[0044] 132: Exhaust Tunnel

[0045] 202: Upper room

[0046] 204: Basement

[0047] 204a: Nasal chamber

[0048] 204b: Oral chamber

[0049] UR: User

[0050] d: distance DETAILED DESCRIPTION

[0051] The following description of the embodiments is only for explaining the contents of the present invention, and is not intended to limit the present invention. Elements that are not directly related to the present invention, such as a headband for fixing the mask to the user's head, are not shown, and the dimensional relationship between the elements in the drawings is only for easy understanding, and is not intended to limit the actual proportion.

[0052] An embodiment of the present utility model is as follows Figure 1A , Figure 1B and Figure 2 shown. Figure 1A It is a schematic front view of the breathable mask 1 of the present invention. Figure 1B along Figure 1A Rear view obtained by section line 1b-1b. Figure 2 for Figure 1A Sagittal cross-section of a respirator mask 1.

[0053] The respirable mask 1 includes a breathing tube 11 and a body 13. The breathing tube 11 is in fluid communication with an interior of the body 13. An air inlet pipe 112 and at least one exhaust pipe 114 longitudinally isolated from the air inlet pipe 112 are formed inside the breathing tube 11. The breathing tube 11 of this embodiment is illustrated by taking two exhaust pipes 114 longitudinally isolated on both sides of the air inlet pipe 112 as an example, however, any changes in the number and position configuration of the exhaust pipes 114 of the breathing tube 11 should be within the scope of the present invention.

[0054] The body 13 includes a main frame 13a, a lens 13b, a waterproof sealing skirt 13c, an air inlet passage, an exhaust passage and a drain valve 13f. The lens 13b is embedded in the main frame 13a. The waterproof sealing skirt 13c is at least partially embedded with the main frame 13a and the lens 13b.

[0055] The waterproof sealing skirt 13c is suitable for fitting on the face of a user UR. The waterproof sealing skirt 13c has a spacer 13c1. The spacer 13c1 is used to separate the interior of the body 13 into an upper chamber 202 and a lower chamber 204. The waterproof sealing skirt 13c also includes a bridge 13c2, which spans the lower chamber 204 and divides the lower chamber 204 into a nose chamber 204a and a mouth chamber 204b located below the nose chamber 204a. When the user UR wears the respirable mask 1 through a fastening device (usually an elastic headband connecting the two sides of the main frame 13a, not shown in the figure), the spacer 13c1 is located above the nose of the user UR, and the eyes of the user UR are accommodated in the upper chamber 202, the nose of the user UR is accommodated in the nose chamber 204a, and the mouth of the user UR is accommodated in the mouth chamber 204b.

[0056] The air intake passage is formed from the air intake pipe 112 to the lower chamber 204, more specifically, between the lower end of the breathing pipe 11 and the nose chamber 204a. Preferably, the body 13 has two air intake check valves 13d symmetrically arranged on two outer sides of the spacer 13c1, so that the inhaled air can pass through the air intake passage in one direction and enter the lower chamber 204. In this way, the air intake passage is defined by the upper chamber 202 and the air intake check valve 13d, and the air intake passage is in fluid communication with the nose chamber 204a. The two air intake check valves 13d can be arranged at any position, and can also be arranged on the spacer 13c1.

[0057] Further references Figure 3A to Figure 3C , an exhaust passage is formed from the lower chamber 204 to the exhaust pipe 114. More specifically, the exhaust passage is in fluid communication with the nose chamber 204a. The exhaust passage mainly includes two exhaust tunnels 132 formed between the lower end of the breathing tube 11 and the nose chamber 204a. Each exhaust tunnel 132 can be defined by, for example, a waterproof sealing skirt 13c and an inner surface of the lens 13b, and extends along the edge of the body 13. In this embodiment, the main frame 13a does not constitute a part of the exhaust tunnel 132.

[0058] In addition, the bridge member 13c2 has an opening 20 and a one-way one-way valve 13e adjacent to the opening 20, so that the nasal chamber 204a and the oral chamber 204b can be fluidically connected through the opening 20 on the bridge member 13c2 and the one-way one-way one-way valve 13e adjacent to the opening 20. The one-way one-way valve 13e only allows one-way fluid communication between the nasal chamber 204a and the oral chamber 204b.

[0059] Preferably, when the user UR puts on the respirable mask 1, the opening 20 is relatively far away from the nostrils of the user UR, and the oral and nasal one-way valve 13e is relatively close to the nostrils of the user UR. Specifically, the opening 20 is located in front of the oral and nasal one-way valve 13e. When the user UR puts on the respirable mask 1, his nostrils are relatively facing the oral and nasal one-way valve 13e and are relatively far away from the opening 20. The total area of ​​the opening 20 can be between 60 and 200 square millimeters (mm 2 ). The opening 20 may be formed by a plurality of openings spaced apart from each other. In each of the figures, the opening 20 is shown as being formed by two openings spaced apart from each other, so the sum of the areas of the two openings is the total area of ​​the opening 20. However, in other embodiments, the opening 20 may be formed by a single opening or by two or more openings spaced apart from each other. In this case, the sum of the areas of the single opening or the plurality of openings is still maintained between 60 and 200 square millimeters (mm 2 That is to say, although the opening 20 shown in each figure is shown as two rectangular openings, the number and shape of the openings of the actual opening are not limited, and it can even be designed as a mesh or grille-type opening with many openings, which is also feasible.

[0060] Further merge references Figure 5 The opening 20 has an inner boundary. A distance d between the inner boundary and a central inner edge of the bridge member 13c2 is between 20 and 80 mm, preferably between 20 and 50 mm.

[0061] In addition, if Figure 2 and Figure 5 As shown, the oral and nasal one-way valve 13e has a central fixed portion 13e1 and two valve plates 13e2 extending outward from the central fixed portion 13e1. The central fixed portion 13e1 is fixed to the bridge member 13c2, and the two valve plates 13e2 are opened only when airflow from the nasal chamber 204a to the oral chamber 204b is allowed to pass. It should be noted that although the one-way valves shown in the figure (for example, the air intake one-way valve 13d and the oral and nasal one-way valve 13e) are all wing-shaped one-way valves, the actual shape and number are not limited. In other embodiments, mushroom-shaped or pivot-shaped one-way valves can also be selected.

[0062] See now Figure 3A , which depicts the air intake path with the airflow shown by the solid line. When the user UR wears the respirable mask 1 and inhales through the nose, fresh air will enter from the air intake pipe 112 of the breathing tube 11, pass through the upper chamber 202, and enter the nasal chamber 204a via the air intake one-way valve 13d, and be inhaled into the body by the nose. In addition, when the user UR inhales through the mouth, the fresh air in the nasal chamber 204a will mainly pass through the mouth-nose one-way valve 13e provided on the bridge 13c2, enter the mouth chamber 204b, and be inhaled into the body by the mouth.

[0063] On the other hand, the exhaust path can be found in Figure 3B and Figure 3C The airflow is shown by the dotted line in the figure. Because the drain valve 13f is kept closed by the water pressure, the mouth chamber 204a is essentially a closed space. When the user UR chooses to exhale through the nose, the exhaust air will naturally move through the space that is easy to walk. In other words, the dirty air will go up along the two exhaust tunnels 132 independently set between the two exhaust pipes 114 and the nose chamber 204a, and then be discharged to the outside through the two exhaust pipes 114 set in the breathing tube 11. Furthermore, when the user UR exhales naturally through the mouth, the dirty air will enter the nose chamber 204a from the mouth chamber 204b through the opening 20 on the bridge 13c2, and then go up along the above-mentioned two exhaust tunnels 132, and be discharged to the outside through the two exhaust pipes 114 set in the breathing tube 11.

[0064] In addition, when the user UR uses his mouth to exhale, the exhaust path can refer to Figure 4A and Figure 4BThe airflow is shown by the dotted line in the figure. Because of the obstruction of the bridge 13c2 and the limited area of ​​the opening 20, the accumulated water in the oral chamber 204b will be discharged through the drain valve 13f and will not splash back to the nasal chamber 204a in large quantities. Therefore, the nose area of ​​the user UR can be relatively dry and comfortable. Through the structure of the above-mentioned breathable mask 1, the user UR can use the nose and / or mouth to inhale and exhale at will. Moreover, because the space of the oral chamber 204b is very small, and the position of the drain valve 13f is designed to be directly opposite to the user's mouth, this design allows the user UR to overcome the water pressure in the water and drain water easily without floating to the surface, which saves more energy.

[0065] In other embodiments, an exhaust check valve (not shown) may be provided at the connection between the exhaust tunnel 132 and the nasal chamber 204a to further prevent the dirty air accumulated in the exhaust tunnel 132 from flowing back into the nasal chamber 204a.

[0066] The technical focus of the present invention is that in a full-face mask having an upper chamber and a lower chamber, the lower chamber is further separated into a nasal chamber and an oral chamber by a bridge, and the bridge is provided with an opening and a one-way valve for the nose and mouth. This technical concept can be used for any form of full-face mask, and the disclosed figures only use one type of breathable mask as an illustration. In other words, the structure of the main frame 13a, the lens 13b (i.e., the viewing window) and the waterproof sealing skirt 13c in the disclosed figures is only for illustration purposes, and any type of mask transformed based on the concept of the present invention belongs to the protection scope of the present invention, and should not be misunderstood as limiting the protection scope of the present invention.

[0067] Furthermore, in the present invention, preferably, the lens 13b is a single lens integrated type, and the breathing tube is composed of a single air intake tube 112 and two exhaust tubes 114. In other embodiments, the lens is a double lens separated type. The exhaust tube, exhaust tunnel or exhaust channel referred to in the above embodiments are preferably bilaterally symmetrical. However, for the sake of clarity and simplicity, only one of them is selected for explanation and advocacy in some descriptions, and the number is not limited.

[0068] As for the design of other parts, such as how the inlet and outlet pipes are formed (integrated into one breathing pipe or separated into two or more pipes), the number and shape of the lenses and frames, the number and style of the inlet and outlet valves, etc., these are not the questions. The so-called breathing pipe can be directly extended outward from the top of the mask body, or it can be integrally extended from the lower end of the breathing pipe by the lens 13b and then connected to the main body of the breathing pipe, such as Figure 1B As shown, the breathing tube body and the interior of the main body are connected to each other in the desired fluid manner.

[0069] Accordingly, the above embodiments are only used to illustrate the implementation methods of the utility model and to explain the technical features of the utility model, and are not used to limit the protection scope of the utility model. Changes or equivalent arrangements that can be easily completed by those skilled in the art are all within the scope claimed by the utility model, and the scope of protection of the utility model shall be based on the claims.

Claims

1. A breathable mask comprising: an entity; and A breathing tube, connected to an internal fluid of the body, the breathing tube comprising an air inlet pipe and an exhaust pipe independent of the air inlet pipe; in, The ontology contains: A main frame; a lens, embedded in the main frame; a waterproof sealing skirt, at least partially engaged with the main frame and the lens, the waterproof sealing skirt being adapted to fit the face of a user, the waterproof sealing skirt having a spacer that separates the interior of the main body into an upper chamber and a lower chamber, so that when the user wears the respirable mask through a fastening device, the spacer is located above the user's nose, the user's eyes are accommodated in the upper chamber, and the user's nose and mouth are accommodated in the lower chamber; an air intake passage formed from the air intake pipe to the lower chamber; and an exhaust passage formed from the lower chamber to the exhaust pipe; Features: The waterproof sealing skirt also includes a bridge member spanning across the lower chamber to divide the lower chamber into a nose chamber and a mouth chamber located below the nose chamber, so that when the user wears the respirator, the nose of the user is accommodated in the nose chamber and the mouth of the user is accommodated in the mouth chamber; and The air inlet channel is in fluid communication with the nasal chamber, the air outlet channel is in fluid communication with the nasal chamber, and the nasal chamber and the oral chamber can be in fluid communication through the bridge; and The bridge member has an opening and an oral-nasal one-way valve adjacent to the opening, and the oral-nasal one-way valve only allows one-way fluid communication from the nasal chamber to the oral chamber.

2. The breathable mask according to claim 1, wherein: When the user wears the respirator, the mouth-nose one-way valve is closer to the nostrils of the user than the opening is away from the nostrils of the user.

3. The breathable mask of claim 2, wherein: The total area of ​​the opening is between 60 and 200 square millimeters.

4. The breathable mask according to claim 3, wherein: The opening has an inner boundary, and the distance between the inner boundary and a central inner edge of the bridge component is between 20 and 80 mm.

5. The breathable mask of claim 4, wherein: The distance between the inner boundary and the central inner edge is between 20 and 50 mm.

6. The breathable mask of claim 2, wherein: The opening is formed by a plurality of openings spaced apart from each other.

7. The breathable mask of claim 2, wherein: The oral and nasal one-way valve has a central fixed portion and two valve plates extending outward from the central fixed portion. The central fixed portion is fixed on the bridge component, and the two valve plates are opened only when airflow from the nasal chamber to the oral chamber is allowed to pass through.

8. The breathable mask of claim 1, wherein: The exhaust channel comprises an exhaust tunnel which is defined by the waterproof sealing skirt and an inner surface of the lens and extends along the outer edge of the body.

9. A body of a respirable mask, comprising: A main frame; a lens, embedded in the main frame; a waterproof sealing skirt, at least partially engaged with the main frame and the lens, the waterproof sealing skirt can be fitted to a user's face, the waterproof sealing skirt has a spacer that divides the interior of the main body into an upper chamber and a lower chamber, so that when the user wears the respirable mask through a fastening device, the spacer is located above the user's nose, the user's eyes are accommodated in the upper chamber, and the user's nose and mouth are accommodated in the lower chamber; Features: The waterproof sealing skirt also includes a bridge member spanning across the lower chamber to divide the lower chamber into a nose chamber and a mouth chamber located below the nose chamber, so that when the user wears the respirable mask, the nose of the user is accommodated in the nose chamber, and the mouth of the user is accommodated in the mouth chamber; as well as The bridge member has an opening and an oral-nasal one-way valve adjacent to the opening, and the oral-nasal one-way valve only allows one-way fluid communication from the nasal chamber to the oral chamber.

10. The body of the respirable mask according to claim 9, characterized in that When the user wears the respirator, the mouth-nose one-way valve is closer to the nostrils of the user than the opening is away from the nostrils of the user.

11. The body of the respirable mask according to claim 10, characterized in that The total area of ​​the opening is between 60 and 200 square millimeters.

12. The body of the respirable mask according to claim 11, characterized in that The opening has an inner boundary, and the distance between the inner boundary and an inner edge of the bridge component is between 20 and 80 mm.

13. The body of the respirable mask according to claim 12, characterized in that The distance between the inner boundary and the inner edge is between 20 and 50 mm.

14. The body of the breathable mask according to claim 10, characterized in that The opening is formed by a plurality of openings spaced apart from each other.

15. The body of the respirable mask according to claim 10, wherein: The oral and nasal one-way valve has a central fixed portion and two valve plates extending outward from the central fixed portion. The central fixed portion is fixed on the bridge component, and the two valve plates are opened only when airflow from the nasal chamber to the oral chamber is allowed to pass through.

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