BREATHING MASK AND BODY STRUCTURE

Abstract

RESPIRATORY MASK AND STRUCTURE OF ITS BODY A respiratory mask (10, 20, 30, 40, 50) comprises a body including a main frame (13, 23, 33, 43, 53), a lens (14, 24, 34, 44, 54) and a tight-fitting sealing skirt (15, 25, 35, 45, 55). The tight-fitting sealing skirt includes a partition that divides the interior of the body into an upper chamber (17, 27, 37, 47, 57) and a lower chamber (18, 28, 38, 48, 58). A bridge (151, 252, 351, 451, 551) is provided to further divide the lower chamber into a nasal chamber (181, 281, 381, 481, 581) and an oral chamber (182, 282, 382, ​​482, 582) below the nasal chamber. When the user dons the mask, their nose and mouth are positioned in the nasal and oral chambers, respectively. The nasal and oral chambers can communicate fluidically through the bridge. See Figure 4A for abbreviations.

Description

Description Title of the invention: BREATHING MASK AND BODY STRUCTURE Field of invention The present invention is a full face mask, particularly a breathing mask for snorkeling. Description of the technique In order to allow the user's mouth and nose to breathe freely, the user to inhale as much clean air as possible, and the dirty air exhaled by the user not to mix with the clean air during the next inhalation cycle, the body of the current full face snorkel mask (FFSM) is divided into an upper chamber that covers the user's eyes and a lower chamber that covers the user's mouth and nose, so that the inhaled clean air can flow unidirectionally through the upper chamber into the lower chamber. Most of the dirty air exhaled by the user can be discharged through an independent exhaust passage. Parts of the aforementioned exhaust passages are independently installed at the periphery of the upper chamber and communicate with the breathing tube, so that the air can be directly discharged to the outside through the breathing tube and does not remain in the upper chamber.In this way, the dirty air is not inhaled again and passes into the lower chamber during the user's next inhalation, thus avoiding carbon dioxide being contained in the fresh air of the next inhalation cycle. Some patents such as US10,556,654B2 and US11,358,012B2 have disclosed such a spatial arrangement. However, with each inhalation and exhalation cycle, it is inevitable that a certain amount of dirty air rich in carbon dioxide will remain in the exhaust passage and the lower chamber. This amount of dirty air will be inhaled along with clean air during the next inhalation cycle. Therefore, although there is a separate structure for the air inlet and outlet, the air inhaled with each breathing cycle is still not clean enough. After a long period of snorkeling, a considerable amount of carbon dioxide will also accumulate in the mask. In addition, when the mask is actually used in water, it is inevitable that water will accumulate in the lower chamber. Since the user's mouth and nose share the same chamber, when the user exhales forcefully through the mouth, hoping to see the accumulated water flow out through the purge valve, the water is forced back into the nostrils.This greatly bothers the user and even makes them feel as if they are choking on water. Therefore, these . masks can still be improved. In addition, the existing FFSM must overcome the high water pressure, as it must be drained through the purge valve into the water, which is almost impossible in reality. It is therefore also impossible to remove the water accumulated in the mask solely by exhaling forcefully into the water. In order to solve this problem, it is often necessary to raise the head or stand to hold the mask out of the water and let the accumulated water flow downwards through the purge valve (the location of which corresponds to the position of the user's chin). This is extremely inconvenient and energy-consuming, as well as reducing the enjoyment of snorkeling. Under these conditions, the simultaneous or partial resolution of the above-mentioned problems, i.e., improving the reliability of the bypass of incoming clean air and outgoing dirty air, effectively controlling manufacturing and assembly costs and / or improving the strength of the entire mask, have become the unanimous objective of the industry. Summary of the invention The invention relates to a breathing mask, provided with a bridge in the lower chamber which accommodates the mouth and nose of the user. Thus, the lower chamber is divided into a nasal chamber and an oral chamber, the intake air flow being guided to the nasal chamber and the exhaust air flow being guided from the nasal chamber or the oral chamber. Furthermore, the nasal chamber and the oral chamber are in certain conditions in communication with each other, by providing one or more openings or a one-way valve on the opening(s), allowing only fluid to flow from the nasal chamber to the oral chamber. Furthermore, the lower chamber is originally an independent cavity.Thanks to the adjustment of the bridge, the structure of the lower chamber has been considerably strengthened, so that at the front of the mask, in the area of ​​the mouth and nose located under the glass, it is not necessary to consider the adjustment of too many hard parts, such as the bracket connecting the glass frame and the purge valve frame. The strength of the entire mask is still sufficient, and the soft part of the coating does not sag under the pressure of the water during use. Regarding the path of the inspired airflow, when the nose inhales, fresh air can enter the nasal chamber from the inlet duct and directly enter the nasal chamber of the user; when the mouth inhales, fresh air can enter the nasal chamber from the inlet duct, then enter the oral chamber and then enter the mouth of the user. Regarding the exhaled airflow path, if the exhaust passage communicates with the nasal chamber, when the nose exhales, part of the dirty air passes through the exhaust passage and is discharged to the outside, and the other part of the dirty air enters the oral chamber and is then discharged to the outside through the purge valve. When the mouth exhales forcefully, the dirty air is discharged into the water through the purge valve and does not return to the nasal chamber, since it is blocked by the one-way valve on the bridge. If the exhaust passage is connected to the oral chamber, when the nose exhales, the dirty air first enters the oral chamber, most of it passes through the exhaust passage and is discharged to the outside, and the other small part can be discharged into the water through the purge valve.When the mouth exhales, most of the exhaled dirty air is discharged through the exhaust passage, and a small part is discharged into the water through the purge valve, and does not return to the nasal chamber. Therefore, the user will have to inhale and exhale freely through the nose or mouth. If the user chooses to inhale through the nose, since the inhaled inspired airflow is completely independent of the exhaled airflow, the user will be able to inhale practically 100% fresh air; and if he chooses to inhale through the mouth, since the volume of the oral chamber is relatively small, the dirty air accumulated in the oral chamber is also greatly reduced, so as not to replace the large amount of fresh air coming from the nasal chamber through the bridge. In accordance with the above-mentioned objective, the present invention specifically provides a breathing mask, comprising a body and at least one breathing tube. The breathing tube is in fluid communication with the interior of the body. The at least one breathing tube comprises an inlet conduit and an exhaust conduit independent of the inlet conduit. The body comprises: a main frame; a lens mounted in the main frame; a sealing skirt at least partially mounted on the main frame and the lens. The sealing skirt is adapted to the face of a user; it has a partition that separates the interior of the body into an upper chamber and a lower chamber. When the user puts on the breathing mask using a fastening device, the partition is placed over the user's nose, his eyes are accommodated in the upper chamber, and his nose and mouth in the lower chamber.An inlet passage is formed between the inlet duct of the breathing tube and the lower chamber, and an exhaust passage is formed between the lower chamber and the exhaust duct of the breathing tube. The invention is characterized in that the tight sealing skirt also comprises a bridge formed across the lower chamber to divide the lower chamber into a nasal chamber and an oral chamber located below the nasal chamber. When the user puts on the mask, his nose is housed in the nasal chamber and his mouth in the oral chamber, while . that the intake passage is in fluid communication with the nasal chamber and that the exhaust passage is in fluid communication with the oral chamber or the nasal chamber. Further, the nasal chamber and the oral chamber may be in fluid communication with each other through the bridge. In certain advantageous embodiments, the aforementioned breathing mask comprises at least one of the following features: - the mask includes a breathing tube, and the latter includes an inlet duct and an exhaust duct; - the intake passage is provided with a first one-way valve for unidirectionally supplying inspired air from the upper chamber into the nasal chamber: - the first one-way valve is arranged on the partition; - the exhaust passage is provided with a second one-way valve to allow exhaled air to be discharged unidirectionally from the lower chamber along the exhaust passage; - the exhaust passage is in fluid communication with the oral chamber, and the bridge is formed with at least one opening such that the nasal chamber is in fluid communication with the oral chamber therethrough; - the bridge further comprises a third one-way valve disposed on the at least one opening to allow inspired air from the nasal chamber to enter the oral chamber in a one-way manner; - the exhaust passage communicates with the nasal chamber; - the exhaust passage is provided with a second one-way valve to allow exhaled air from the nasal chamber to be discharged to the outside along the exhaust passage; - the bridge is provided with at least one opening and further comprises a third one-way valve placed on the at least one opening to allow inspired air from the nasal chamber to enter unidirectionally into the oral chamber; - the exhaust passage communicates with the oral chamber, and the first one-way valve is located on a lower outer side of the partition; - the exhaust passage is provided with a second one-way valve which allows exhaled air to be discharged unidirectionally from the oral chamber along the exhaust passage; - the exhaust passage is provided with a partition wall at its inlet area, the partition wall being fused and integrally formed with the partition and the bridge, so that exhaled air from the oral chamber is further isolated from inspired air entering the nasal chamber; - the bridge is provided with at least one opening and further comprises a third one-way valve placed on the at least one opening to allow inspired air from the nasal chamber to enter unidirectionally into the oral chamber; - the mask comprises two breathing tubes, one of which defines the inlet duct and the other the exhaust duct; and wherein the exhaust duct extends along an outer contour of the body to be adjacent the inlet duct, and has a lower end which is inserted into the oral chamber in a sealing manner so as to communicate with the oral chamber; - the intake passage is provided with a first one-way valve, which supplies inspired air from the upper chamber to the nasal chamber in a one-way manner; - the first one-way valve is located on a lower, external side of the partition; - the exhaust duct is interposed between one side of the main frame and the waterproof skirt; and - the exhaust duct is provided with a second one-way valve at its top to allow exhaled air to be evacuated unidirectionally from the oral chamber through the exhaust duct. Furthermore, in accordance with the above-mentioned objective, the present invention specifically provides a structure of the body of a breathing mask. The body comprises: a main frame; a lens, integrated in the main frame; and a tight sealing skirt at least partially connected to the main frame having the lens. The tight sealing skirt is adapted to the face of a user; it has a partition that separates the interior of the body into an upper chamber and a lower chamber. When the user wears the breathing mask, the partition is placed on his nose, his eyes are accommodated in the upper chamber, while his nose and mouth are accommodated in the lower chamber. The structure is characterized in that the tight sealing skirt further comprises a bridge formed across the lower chamber to divide the lower chamber into a nasal chamber and a mouth chamber below the nasal chamber.When the user puts on the mask, his nose is housed in the nasal chamber, his mouth in the oral chamber, while the nasal chamber and the oral chamber are conveniently in fluid communication with each other through the bridge. Brief description of the drawings [Fig.1] [Fig.1] denotes the airflow diagram of the first embodiment of the present invention; [Fig.2] [Fig.2] denotes the airflow diagram of the first embodiment of the present invention; [Fig.3A] [Fig.3A] is a three-dimensional diagram of a third embodiment of the present invention; [Fig.3B] [Fig.3B] is a front cross-sectional view from line 3B-3B of [Fig.3A], showing the intake and exhaust airflows; [Fig.4A] [Fig.4A] is a three-dimensional diagram of a fourth embodiment of the present invention; [Fig.4B] [Fig.4B] is a front cross-sectional view from line 4B-4B of [Fig.4A], showing the intake and exhaust airflow; [Fig.5A] [Fig.5A] is a perspective view of a fifth embodiment of the present invention; [Fig.5B] [Fig.5B] is an exploded front perspective view of the fifth embodiment of the present invention, in which the purge valve is not shown; [Fig.5C] [Fig.5C] is a front cross-sectional view along line 5C-5C of [Fig.5A], showing the intake and exhaust air flows. DESCRIPTION OF THE PREFERRED EMBODIMENT The following is the common structure of the various embodiments, so that the reference numerals corresponding to each figure are systematically listed in parallel. Among them, the elements of the first, second, third, fourth and fifth embodiments are designated by the numbers beginning with |, 2, 3, 4 and 5, respectively, for the sake of clarity and brevity. Referring to [Fig. 1] to 5C, a breathing mask 10, 20, 30, 40, 50 comprises a body 11, 21, 31, 41, 51, and at least one breathing tube 12, 22, 32, 42, 52 in fluid communication with the interior of the body 11, 21, 31, 41, 51. This at least one breathing tube 12, 22, 32, 42, 52 comprises an inlet conduit 121, 221, 321, 421, 521, and an exhaust conduit 122, 222, 322, 422, 522 independent of the inlet conduit 121, 221, 321, 421, 521. The body 11, 21, 31, 41, 51 comprises: a main frame 13, 23, 33, 43, 53, a lens 14, 24, 34, 44, 54 mounted in the main frame 13, 23, 33, 43, 53, a watertight sealing skirt 15, 25, 35, 45, 55 mounted at least partially with the main frame 13, 23, 33, 43, 53 and the lens 14, 24, 34, 44, 54. The watertight sealing skirt 15, 25, 35, 45, 55 can be placed on the face of a user (not shown).The airtight sealing skirt 15, 25, 35, 45, 55 has a partition 16, 26, 36, 46, 56 which divides the interior of the body 11, 21, 31, 41, 51 into an upper chamber 17, 27, 37, 47, 57 and the lower chamber 18, 28, 38, 48, 58. When the user wears the breathing mask 10, 20, 30, 40, 50 using a fastening device (usually an elastic strap connecting two sides of the frame . main 13, 23, 33, 43, 53, not shown in the figures), the partition 16, 26, 36, 46, 56 is placed on the user's nose, his eyes are housed in the upper chamber 17, 27, 37, 47, 57, while his nose and mouth are housed in the lower chamber 18, 28, 38, 48, 58. An intake passage is formed from the intake duct 121, 221, 321, 421, 521 to the lower chamber 18, 28, 38, 48, 58, and an exhaust passage is formed from the lower chamber 18, 28, 38, 48, 58 to the exhaust duct 122, 222, 322, 422, 522. The aforementioned glass, intake duct, exhaust duct, intake passage and exhaust passage are all selected in one copy for the description, but the number of each of them is not limited.Preferably, the glass is an integrated type for the left and right eyes, and there are two intake ducts, two exhaust ducts, two intake passages and two exhaust passages, arranged symmetrically. The airtight sealing skirt 15, 25, 35, 45, 55 also includes a bridge 151, 251, 351, 451, 551, arranged across the lower chamber 18, 28, 38, 48, 58, such that the lower chamber 18, 28, 38, 48, 58 is divided into a nasal chamber 181, 281, 381, 481, 581 and a mouth chamber 182, 282, 382, ​​482, 582 located below the nasal chamber 181, 281, 381, 481, 581. When the user wears the mask 10, 20, 30, 40, 50, his nose is housed in the nasal chamber 181, 281, 381, 481, 581, and its mouth is housed in the buccal chambers 182, 282, 382, ​​482, 582. The intake passage is in fluid communication with the nasal chamber 181, 281, 381, 481, 581, and the exhaust passage is in fluid communication with the buccal chamber 182, 282, 382, ​​482, 582 or the nasal chamber 181, 281, 381, 481, 581.The nasal chamber 181, 281, 381, 481, 581 and the oral chamber 182, 282, 382, ​​482, 582 are adapted to be in fluid communication with each other through the bridge 151, 251, 351, 451, 551. [Fig. 1] is a schematic illustration of the first embodiment of the present invention. More specifically, the mask 10 comprises a breathing tube 12 with the inlet conduit 121 and the exhaust conduit 122 formed inside the breathing tube 12. The inlet passage is provided with a first one-way valve 161, which allows inspired air to enter from the upper chamber 17 to the nasal chamber 181 unidirectionally. Preferably, the first one-way valve 161 is located on the septum 16, and more preferably, a second one-way valve (not shown) may be provided on the exhaust passage to ensure that exhaled air is discharged unidirectionally through the exhaust passage from the lower chamber 18, and to prevent dirty air accumulated in the exhaust passage from returning to the oral chamber 182. In this embodiment, the exhaust passage communicates with the oral chamber 182. The bridge 151 is provided with at least one opening 152 (however, the number and shape of the openings are not limited). When the user puts on the mask 10, fluid communication between the nasal chamber 181 and the oral chamber 182 can only be through the opening 152. As shown by the hollow air flow lines in [Fig. 1], when the nose inhales, fresh air enters from the intake duct 121 of the breathing tube 12, passes through the upper chamber 17, and enters the nasal chamber 181 through the first one-way valve 161 for the user's nose to inhale; when the mouth inhales, fresh air in the nasal chamber 181 enters the oral chamber 182 through the opening 152 provided on the bridge 151, for the user's mouth to inhale. Furthermore, as shown by the solid airflow lines in [Fig.1], when the nose exhales, the dirty air first enters the oral chamber 182 through the opening 152, then passes through the exhaust tunnel 153 and exits through the exhaust duct 122 provided in the breathing tube 12, the exhaust tunnel 153 may be, for example, jointly defined by the tight sealing skirt 15 and the periphery of the lens 14. When the mouth exhales, the dirty air is discharged along the exhaust tunnel 153 and the exhaust duct 122 provided in the breathing tube 12. And when the mouth exhales strongly, thanks to the barrier of the bridge 151, the water accumulated in the oral chamber 182 is discharged through the purge valve 19 and does not return in large quantities to the nasal chamber 181, which makes the nasal area relatively dry and comfortable. The user can therefore freely use the nose or mouth to inhale or exhale.In addition, since the space of the mouth chamber 182 is very small, and more preferably, since the position of the design of the purge valve 19 can face the user's mouth, this design can enable the user to overcome the water pressure and easily discharge the water without the need to come to the surface, thereby saving energy. [Fig. 2] is a diagram of an individual description of the second embodiment. As in the first embodiment, the mask 20 comprises a breathing tube 22 in which the inlet conduit 221 and the exhaust conduit 222 are formed. The inlet passage is provided with a first one-way valve 261, which allows only inspired air to enter from the upper chamber 27 to the nasal chamber 281 in a unidirectional manner. Preferably, the first one-way valve 261 is located on the septum 26, and more preferably, a second one-way valve (not shown) may be provided on the exhaust passage to ensure that exhaled air is discharged unidirectionally through the exhaust passage from the lower chamber 28, and to prevent dirty air accumulated in the exhaust passage from returning to the buccal chamber 282. In this embodiment, the exhaust passage communicates with the oral chamber 282. At least one opening 252 is provided on the bridge 251 (the number and shape of the openings are not limited). The bridge 251 further comprises a third one-way valve 255 which is disposed on the opening 252. In other words, when the user wears the mask 20, fluid can flow from the nasal chamber 281 to the oral chamber 282 only through the third one-way valve 255. As shown by the hollow airflow lines in [Fig.2], when the nose inhales, fresh air enters from the intake duct 221 of the breathing tube 22, passes through the upper chamber 27, and enters the nasal chamber 281 through the first one-way valve 261 for the nose to inhale; when the mouth inhales, the fresh air in the nasal chamber 281 passes through the third one-way valve 255 and enters the oral chamber 282 for the mouth to inhale. As shown by the solid airflow lines in [Fig. 2], when the nose exhales, the dirty air first enters the oral chamber 282 through the third one-way valve 255, then passes through the exhaust tunnel 253 independently formed on the periphery of the upper chamber 27, then through the exhaust duct 122 provided in the breathing tube 12, and is discharged to the outside. The exhaust tunnel 253 is, for example, formed by the watertight sealing skirt 25 and the periphery of the glass 24.When the mouth exhales, the dirty air passes through the aforementioned exhaust tunnel 253, then through the exhaust duct 222 provided in the breathing tube 22, and is discharged to the outside. And when the mouth exhales strongly, due to the blocking of the bridge 251 and the third one-way valve 255, the water accumulated in the mouth chamber 282 is discharged through the purge valve 29 and does not return to the nasal chamber 281, making the nose absolutely dry and comfortable. Therefore, the user can freely use the nose or mouth to inhale or exhale. In addition, since the space of the mouth chamber 282 is very small, and more preferably, since the position of the purge valve 29 can face the user's mouth, this design can enable the user to overcome the water pressure and easily discharge the water without the need to come to the surface, thereby saving more energy. . Figures 3A and 3B are schematic illustrations of the third embodiment. As in the second embodiment, the mask 30 includes a breathing tube 32 in which the inlet conduit 321 and the exhaust conduit 322 are formed. The inlet passage is provided with a first one-way valve 361, which allows only inspired air to enter from the upper chamber 37 to the nasal chamber 381 in a unidirectional manner. Preferably, the first one-way valve 361 is located on the septum 36, and more preferably Possibly, the exhaust passage may be provided with a second one-way valve 362 to ensure that exhaled air is discharged unidirectionally through the exhaust passage from the lower chamber 38, and to prevent dirty air accumulated in the exhaust passage from returning to the nasal chamber 381. In this embodiment, the exhaust passage communicates with the nasal chamber 381. The bridge 351 is provided with at least one opening 352 (the number and shape of the openings are not limited), and the bridge 351 further comprises a third one-way valve 355, which is disposed on the opening 352 to allow inspired air to unidirectionally enter from the nasal chamber 381 into the oral chamber 382. In other words, when the user puts on the mask 20, fluid can flow from the nasal chamber 381 to the oral chamber 382 only through the third one-way valve 355. As shown by the hollow airflow lines in [Fig.3B], when the nose inhales, fresh air enters the intake duct 321 of the breathing tube 32, passes through the upper chamber 37, and enters the nasal chamber 381 through the first one-way valve 361 for the nose to inhale; when the mouth inhales, fresh air in the nasal chamber 381 passes through the third one-way valve 355 and enters the oral chamber 382 for the mouth to inhale. As shown by the solid airflow lines in [Fig. 3B], when the nose exhales, dirty air passes through the exhaust tunnel 353 which is independently located at the periphery of the upper chamber 27, then through the exhaust duct provided in the breathing tube 32, and is discharged to the outside; when the mouth exhales, the dirty air is blocked by the third one-way valve 355 and does not return to the nasal chamber 381.And when the mouth exhales strongly, due to the blockage of the bridge 351 and the third one-way valve 355, the water accumulated in the mouth chamber 382 is discharged directly through the purge valve 39 and does not return to the nasal chamber 381, making the nasal area dry and comfortable. In this embodiment, the user can therefore arbitrarily use the nose to inhale and exhale, and use the mouth to inhale. Furthermore, in this embodiment, the dirty air exhaled from the mouth does not return to the nasal chamber 381 to appear in the next inhalation cycle. Moreover, in the water, facing the water pressure and the blockage of the third one-way valve 355, the mouth cannot effectively participate in exhalation.This allows the nose to inhale cleaner fresh air, so that the user unconsciously uses his nose to breathe, which improves the sustainability and safety of snorkeling activities. In addition, since the space of the mouth chamber 382 is very small and, preferably, since the purge valve 39 can be placed right in front of the user's mouth, the design of this embodiment can allow the user to overcome the water pressure, to easily perform . evacuation into the water without having to come back to the surface, which is therefore more energy efficient. Figures 4A and 4B are schematic illustrations of the fourth embodiment. As in the second embodiment, the mask 40 includes a breathing tube 42 in which the inlet passage 421 and the exhaust passage 422 are formed. The inlet passage is provided with a first one-way valve 461, which allows only fresh inspired air to enter unidirectionally from the upper chamber 47 to the lower chamber 48. In this embodiment, the first one-way valve 461 is on the lower, outer side of the partition 46. More preferably, a second one-way valve (not shown) may be provided on the exhaust passage to ensure that exhaled air is discharged unidirectionally through the exhaust passage from the lower chamber 48, and to prevent dirty air accumulated in the exhaust passage from returning to the oral chamber 482. In this embodiment, the exhaust passage communicates with the oral chamber 482. The bridge 451 is provided with at least one opening 452 (the number and shape of the openings are not limited), and the bridge 451 further comprises a third one-way valve 455, which is disposed on the opening 452 to allow inspired air to unidirectionally enter from the nasal chamber 481 into the oral chamber 482. In other words, when the user puts on the mask 40, fluid can flow from the nasal chamber 481 to the oral chamber 482 only through the third one-way valve 455. As shown by the hollow airflow lines in [Fig.4B], when the nose inhales, fresh air enters the intake duct 421 of the breathing tube 42, passes through the upper chamber 47, and enters the nasal chamber 481 through the first one-way valve 461 for the nose to inhale; when the mouth inhales, fresh air in the nasal chamber 481 passes through the third one-way valve 455 and enters the oral chamber 482 for the mouth to inhale. As shown by the solid airflow lines in [Fig. 4B], when the nose exhales, dirty air first enters the oral chamber 482 through the third one-way valve 455, then passes through the exhaust tunnel 453 independently formed on the periphery of the upper chamber 47, then through the exhaust duct 422 provided in the breathing tube 42, and is discharged to the outside.The exhaust tunnel 453 is, for example, formed by the tight sealing skirt 45 and the periphery of the glass 44. When the mouth exhales, the dirty air passes through the aforementioned exhaust tunnel 453, then through the exhaust duct 422 provided in the breathing tube 42, and is discharged to the outside. And when the mouth exhales strongly, due to the blockage of the bridge 451 and the third one-way valve 455, the accumulated water . in the oral chamber 482 is discharged through the purge valve 49 and does not return to the nasal chamber 481, making the nose absolutely dry and comfortable. Therefore, the user can freely use the nose or mouth to inhale or exhale. In addition, since the space of the oral chamber 482 is very small, and more preferably, since the position of the purge valve 49 can face the user's mouth, this design can enable the user to overcome the water pressure and easily discharge the water without the need to come to the surface, thereby saving more energy. In order to prevent the dirty air discharged from the oral chamber 482 from being mixed with the next inhalation, the intake passage and the exhaust passage can be further isolated in this embodiment. Specifically, the exhaust passage is provided with a partition wall 454 at its inlet area, the partition wall being fused and integrally formed with the partition 46 and the bridge 451, so that the exhaled air from the oral chamber 482 is further isolated from the inspired air entering the nasal chamber 481. Figures 5A, 5B and 5C are schematic illustrations of the fifth embodiment. The design of the breathing tube in this embodiment is different from that in previous embodiments. In this embodiment, the mask 50 includes two breathing tubes 52, 52a, one of which defines the inlet conduit 521 and the other the exhaust conduit 522. The exhaust conduit 522 extends along the outer contour of the body 51 to be adjacent the inlet conduit 521, and has a lower end that is inserted into the oral chamber 582 in a sealing manner to communicate with the oral chamber 582. More preferably, the exhaust conduit 522 is interposed between one side of the main frame 51 and the sealing skirt 55 for better positioning.The intake passage is provided with a first one-way valve 561, which allows only inspired air to enter from the upper chamber 57 to the nasal chamber 581 in a one-way manner. In this embodiment, the first one-way valve 561 is located on the lower, outer side of the partition 56. Preferably, the exhaust passage may be provided with a second one-way valve 562 disposed at the top of the exhaust conduit 522 and secured by the cover 523, so as to allow exhaled air to be discharged unidirectionally from the oral chamber 582 through the exhaust conduit 522. Of course, a one-way valve (such as the second one-way valve 362 of the third embodiment, not shown in the figures to illustrate this embodiment) may also be added at the location where the exhaust passage communicates with the oral chamber 582.This type of one-way valve can further prevent dirty air accumulated in the exhaust passage from returning to the oral chamber. 582. In this embodiment, the exhaust passage communicates with the oral chamber 582. The bridge 551 is provided with at least one opening 552 (the number and shape of the openings are not limited), and the bridge 551 further comprises a third one-way valve 555, which is disposed on the opening 552 to allow inspired air to unidirectionally enter from the nasal chamber 581 into the oral chamber 582. In other words, when the user puts on the mask 50, fluid can flow from the nasal chamber 581 to the oral chamber 582 only through the third one-way valve 555. As shown by the hollow airflow lines in [Fig.5C], when the nose inhales, fresh air enters the intake duct 521 of the breathing tube 52, passes through the upper chamber 57, and enters the nasal chamber 581 through the first one-way valve 561 for the nose to inhale; when the mouth inhales, fresh air in the nasal chamber 581 passes through the third one-way valve 555 and enters the oral chamber 582 for the mouth to inhale. As shown by the solid airflow lines in [Fig. 5C], when the nose exhales, dirty air first enters the oral chamber 582 through the third one-way valve 555, then passes through the exhaust duct 522 which extends independently along the outer profile of the body 51 and is discharged to the outside. When the mouth exhales, the dirty air is directly discharged to the outside through the aforementioned exhaust duct 522.And when the mouth exhales strongly, due to the blocking of the bridge 551 and the third one-way valve 555, the water accumulated in the mouth chamber 582 is discharged by the purge valve 59 and does not return to the nasal chamber 581, making the nose absolutely dry and comfortable. Therefore, the user can freely use the nose or mouth to inhale or exhale. In addition, since the space of the mouth chamber 582 is very small, and more preferably, since the position of the purge valve 59 can face the user's mouth, this design can enable the user to overcome the water pressure and easily discharge the water without the need to come to the surface, thereby saving more energy.Furthermore, in this embodiment, the intake passage is inside the mask body 51, while the exhaust passage is outside the mask body 51, so that the mutual isolation effect between the intake air and the exhaust air is much better. In addition, since the intake duct 521 in the breathing tube 52 does not need to share a space with the exhaust duct 522, the diameter of the intake duct 521 in the breathing tube 52 can be enlarged, unlike previous embodiments, so that the intake volume of fresh air becomes much larger, thereby facilitating the user's inhalation. Overall and conclusively according to the aforementioned embodiments, the key point of the present invention is in fact the structure of the body 11, 21, 31, 42, 51 of the breathing mask 10, 20, 30, 40, 50, which comprises: a main frame 13, 23, 33, 43, 53, a lens 14, 24, 34, 44, 54, integrated in the main frame, a tight sealing skirt 15, 25, 35, 45, 55, at least partially connected to the main frame 13, 23, 33, 43, 53 and to the lens 14, 24, 34, 44, 54. The tight sealing skirt 15, 25, 35, 45, 55 can be placed on the face of a user and comprises a partition 16, 26, 26, 46, 56 which divides the interior of the body 11, 21, 31, 42, 51 into an upper chamber 17, 27, 37, 47, 57 and the lower chamber 18, 28, 38, 48, 58.When the user puts on the mask 10, 20, 30, 40, 50, the partition 16, 26, 26, 46, 56 is located on his nose, and his eyes are housed in the upper chambers 17, 27, 37, 47, 57, and his nose and mouth are housed in the lower chambers 18, 28, 38, 48, 58. More importantly, the tight sealing skirt 15, 25, 35, 45, 55 also includes a bridge 151, 252, 351, 451, 551 arranged across the lower chamber 18, 28, 38, 48, 58, thus dividing the lower chambers 18, 28, 38, 48, 58 into a nasal chamber 181, 281, 381, 481, 581 and a mouth chamber 182, 282, 382, ​​482, 582 located below the nose chamber. After putting on the mask, the user's nose is housed in the nose chambers 181, 281, 381, 481, 581, and his mouth is housed in the mouth chambers 182, 282, 382, ​​482, 582.The nasal chambers 181, 281, 381, 481, 581 and the oral chambers 182, 282, 382, ​​482, 582 are adapted for fluid communication through the bridges 151, 252, 351, 451, 551, preferably for unidirectional fluid communication from the nasal chamber to the oral chamber. It is possible to understand that the physiological structure of the human body has certain established natural mechanisms, which automatically tend toward the environment containing clean air and avoid the environment containing dirty air. Therefore, under the water surface, if the nose cannot breathe freely and only the mouth can do so, in order to maintain life, the physiological mechanism automatically lifts the soft palate to block nasal breathing and switches to mouth breathing without training. By virtue of the natural mechanism, this is the reason why traditional snorkeling equipment uses a diving mask to cover the eyes and nose, prohibiting breathing through the nose, and uses an independent snorkel to allow the user to breathe alone through the snorkel through the mouth.Of course, if the nose and mouth can breathe equally, the user uses either the nose or the mouth to breathe freely, but generally only one of them can be selected as the main process, and both cannot be used simultaneously. This is another natural tendency of anatomy. In addition, if in an environment it is easier to inhale fresh air through the nose than through the mouth, the human brain unconsciously and naturally orders itself. to use the nose to breathe (at which point the soft palate is lowered), allowing for a comfortable breathing pattern containing more oxygen. Therefore, in any embodiment of the aforementioned design, although it is possible to use the mouth or the nose to breathe, since the nasal chamber is the first chamber where fresh air enters the mask and is supplied to the human body for inspiration, and there is virtually no dirty air exhaled from the mouth remaining in the previous breathing cycle, inspiration through the nose naturally becomes the most comfortable choice for the user. This further highlights the advantages of the present invention. According to the fourth and fifth embodiments, if the user inhales through the nose, whether using the mouth or the nose to exhale, the dirty air that has not been discharged is stored in the mouth chamber and the discharge passage.Furthermore, the intake and exhaust passages are not communicated or shared at all, so that fresh air from outside is supplied to the user to inhale with near 100% purity. This is an effect that the prior art cannot achieve. Furthermore, it should be noted that the exhaust ducts, exhaust tunnels or exhaust passages of the above-mentioned embodiments are best designed with bilateral symmetry, but for the sake of clarity and brevity, only one of them is selected for illustration and proposal, and its number is however not limited. Furthermore, the present invention divides the lower chamber into a nasal chamber and a mouth chamber with a bridge, which can be used in any form of full face mask. In this application, only one type is selected for illustration (as can be specifically seen in [Fig.5B]). For further details and as an example for illustration, the main frame 53 and the lens 54 only cover the user's eyes, while his nose and mouth are mainly accommodated by the tight sealing skirt 55.An additional mouth frame 531 independent of the main frame 53 and the lens 54 is also provided, while the purge valve 59 is placed behind the mouth frame 531, and the flexible nose covering portion 553 protrudes outward between the main frame 53 and the mouth frame 531. Any style modified based on the concept of the present invention, such as the intake, the exhaust duct, the exhaust passage, the first or the second one-way valve, their number, type, position and the number and style of the lenses (one-piece or left-right separated), or, the communication between the exhaust passage and the nasal chamber or the mouth chamber should not be limited, as long as it is the structure of the intake and exhaust bypass, regardless of the type of mask.They all fall within the scope of the present invention and should not be interpreted as limiting the claims set forth in the last paragraph.

Claims

Claims

1. A breathing mask (10, 20, 30, 40, 50) comprising a body (11, 21, 31, 41, 51) and at least one breathing tube (12, 22, 32, 42, 52), the at least one breathing tube being in fluid communication with inside the body, and comprising an intake duct (121, 221, 321, 421, 521) and an exhaust duct (122, 222, 322, 422, 522) independent of each other; the body comprising: a main frame (13, 23, 33, 43, 53); a glass (14, 24, 34, 44, 54) mounted in the main frame; a watertight sealing skirt (15, 25, 35, 45, 55), at least par- permanently fixed to the main frame and the glass, the sealing skirt waterproof that can be attached to a user's face; the skirt waterproof seal comprises a partition (16, 26, 36, 46, 56) which separates the interior of the body into an upper chamber (17, 27, 37, 47, 57) and a lower chamber (18, 28, 38, 48, 58), so that when the user wears the mask by means of a fastening device, the partition rests on the user's nose, his eyes are housed in the upper chamber, and his nose and mouth are housed in the chamber inferior; an intake passage formed from the intake duct to the lower room; an exhaust passage formed from the lower chamber to the exhaust duct; characterized in that: the watertight sealing skirt further comprises a bridge (151, 251, 351, 451, 551), formed across the lower chamber, thus dividing the lower chamber into a nasal chamber (181, 281, 381, 481, 581) and a buccal chamber (182, 282, 382, ​​482, 582) located under the nasal chamber, when the user puts on the mask, his nose is housed in the nasal chamber, and the user's mouth is housed in the buccal chamber, in which the inlet passage is in communi- fluid connection with the nasal chamber, the exhaust passage is in fluid communication with the buccal chamber or the chamber nasal, and the nasal chamber and the oral chamber are appreciably suitable in fluid communication with each other through the bridge.

2. A respiratory mask according to claim 1, wherein the mask (10, 20, 30, 40) comprises a breathing tube (12, 22, 32, 42), and the res- tube The suction pipe comprises the intake duct (121, 221, 321, 421) and the exhaust duct (122, 222, 322, 422) formed therein.

3. A breathing mask according to claim 2, wherein the passage intake is provided with a first one-way valve (161, 261, 361) to unidirectionally supply inspired air from the upper chamber (17, 27, 37) in the nasal chamber (181, 281, 381).

4. A breathing mask according to claim 3, wherein the first A one-way valve (161, 261) is disposed on the partition (16, 26).

5. A breathing mask according to claim 4, wherein the passage exhaust is provided with a second one-way valve (162, 262) to allow exhaled air to be evacuated unidirectionally- tional of the lower chamber (18, 28) along the passage exhaust.

6. A breathing mask according to claim 4, wherein the passage exhaust is in fluid communication with the oral chamber (182, 282), and the bridge (151, 251) is formed with at least one opening (152, 252) so that the nasal chamber (181, 281) is in commu- fluid connection with the oral chamber (182, 282) therethrough.

7. A breathing mask according to claim 6, wherein the bridge (251) further comprises a third one-way valve (255) arranged on the at least one opening (252) to allow the inspired air from the nasal chamber (281) to enter the oral chamber (282) of unidirectional manner.

8. A breathing mask according to claim 3, wherein the passage exhaust communicates with the nasal chamber (37).

9. A breathing mask according to claim 8, wherein the passage exhaust is provided with a second one-way valve (362) to allow exhaled air from the nasal chamber (381) to be evacuated outward along the exhaust passage.

10. A breathing mask according to claim 8, wherein the bridge (351) is provided with at least one opening (352), and further comprises a third one-way valve (355) provided on the at least one opening to allow inspired air from the nasal chamber (381) to enter the oral chamber (382) unidirectionally.

11. | A breathing mask according to claim 3, wherein the passage exhaust communicates with the buccal chamber (482), and the first one-way valve (461) is located on an outer side lower part of the partition (46).

12. A breathing mask according to claim 11, wherein the passage exhaust is provided with a second one-way valve, which allows exhaled air to be evacuated unidirectionally from the oral chamber along the exhaust passage.

13. A breathing mask according to claim 11, wherein the passage exhaust is provided with a separating wall (454) at the level of its entrance area, in which the dividing wall is merged and integrally formed with the bulkhead (46) and the deck (451), so that exhaled air from the buccal chamber (482) is further isolated from the air inspired entering the nasal chamber (481).

14. A breathing mask according to claim 13, wherein the bridge (451) is provided with at least one opening (452), and further comprises a third one-way valve (455) provided on the at least one opening to allow inspired air from the nasal chamber (481) to enter the oral chamber (482) unidirectionally.

15. A respiratory mask according to claim 1, the mask (50) comprises two breathing tubes (52, 52a), one of which (52) defines the conduit intake (521) and the other (52a) the exhaust duct (522); and in which the exhaust duct extends along a contour exterior of the body (51) to be adjacent to the intake duct, and has a lower end that is inserted into the buccal chamber (582) in a sealed manner in order to communicate with the chamber buccal.

16. A breathing mask according to claim 15, wherein the passage intake is provided with a first one-way valve (561), which supplies inspired air from the upper chamber (57) into the nasal chamber (581) unidirectionally.

17. A breathing mask according to claim 16, wherein the first one-way valve (561) is located on a lower outer side of the partition (56).

18. A breathing mask according to claim 15, wherein the conduit exhaust (522) is interposed between one side of the main frame (53) and the waterproof sealing skirt (55).

19. A breathing mask according to claim 15, wherein the conduit exhaust (522) is provided with a second one-way valve (562) at its top to allow exhaled air to be evacuated from unidirectional way from the buccal chamber (582) through the exhaust duct (522).

20. Structure of a body (11, 21, 31, 42, 51) of a breathing mask (10, 20, 30, 40, 50), including: a main frame (13, 23, 33, 43, 53); a lens (14, 24, 34, 44, 54) mounted in the main frame; a sealed sealing skirt (15, 25, 35, 45, 55), at least partially secured to the main frame and the lens, wherein the sealed sealing skirt is attachable to a user's face and has a partition (16, 26, 26, 46, 56) for separating an interior of the body into an upper chamber (17, 27, 37, 47, 57) and a lower chamber (18, 28, 38, 48, 58), wherein when the user wears the mask, the partition rests on his nose, his eyes are housed in the upper chamber, and his nose and mouth are housed in the lower chamber; characterized in that: the leak-tight sealing skirt further comprises a bridge (151, 252, 351, 451, 551), formed across the lower chamber, thereby dividing the lower chamber into a nasal chamber (181, 281, 381, 481, 581) and an oral chamber (182, 282, 382, ​​482, 582) located below the nasal chamber; when the user puts on the mask, his nose is housed in the nasal chamber, the user's mouth is housed in the oral chamber, and the nasal chamber and the oral chamber can be in fluid communication with each other through

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