TW202210129A - Exhale filtration device for mask - Google Patents

Abstract

An exhale filtration device for mask is disposed on an outer side of a mask corresponding to the mouth and nose of the user. The device includes a casing, a filter member, and a unidirectional exhaust valve. The casing has a first end combined with the mask, a second end away from the first end, and a housing space therebetween. The first end has an exhaust channel in communication with the housing space. The second end has an air bore in communication with the housing space and the exhaust channel. The filter member is between the exhaust channel and the air bore. The unidirectional exhaust valve is between the filter member and the exhaust channel. During exhaling process, air flows form the exhaust channel through the filter member and then discharged from the air bore, effectively filtering droplet and bacterial exhaled by the user.

Description

Exhalation filter device for mask

The invention relates to a mask product technology, in particular to an exhalation filter device for a mask.

In the recent large-scale outbreak of infectious diseases around the world, in order to prevent the spread of germs and diseases, medical staff and the public usually wear masks to cover the mouth and nose of the face to avoid direct inhalation of droplets and germs in the environment, as a way to protect their own health. 's utility.

It is worth mentioning that many medical-grade masks, such as N95 masks, do not have good air permeability, so some relevant manufacturers have installed breathing valve devices on the masks. The breathing valve can exhale gas from the inside of the mask when the wearer exhales, and pass The breathing valve is discharged to the outside of the mask to improve smooth breathing and improve wearing comfort.

However, the conventional breathing valve does not have the function of filtering droplets and germs. Therefore, when the wearer coughs or sneezes, the breathing valve cannot effectively block droplets and germs and discharge the mask, thereby easily polluting the surrounding environment and infecting others. Risk of infectious disease infection.

The main purpose of this case is to solve the problem that the breathing valve does not filter droplets and pollute the environment. Accordingly, the present invention provides an exhalation filter device for a mask, which can effectively filter the droplets and germs spit out by users, so as to avoid polluting the surrounding environment and achieve safety. Hygiene and health and anti-epidemic efficacy.

In order to achieve the above purpose, the present invention provides an exhalation filter device for a mask, which is arranged on the outer side of a mask and corresponds to the position of the mouth and nose of a user, and the exhalation filter device for a mask comprises a shell, a filter and a row. Air check valve body. The shell has a first end that is combined with the mask, a second end that is far away from the first end, and an accommodating space between the first end and the second end, the first end passing through an exhaust passage that communicates with the accommodating space, the second end is provided with an air hole that communicates with the accommodating space and the exhaust passage; the filter element is arranged between the exhaust passage and the air hole; the exhaust one-way valve body is arranged on the filter element Between the exhaust passage and the exhaust one-way valve body, when the air is exhaled, the air flow is guided from the exhaust passage to the filter element to be filtered and then discharged through the air hole.

In one of the embodiments, the filter element has a bearing portion and an abutting portion, the bearing portion abuts on the inner side of the second end portion, and the abutting portion extends from the periphery of the bearing portion toward the first end portion, And the abutting part is in contact with the first end part, so that the filter element is formed with a accommodating groove communicating with the exhaust passage.

In one of the embodiments, a fixing block extends from the inner side of the second end toward the first end, the bearing portion corresponding to the fixing portion penetrates a through hole communicating with the accommodating groove, and the fixing portion penetrates through the through hole to position the filter element. At the second end portion, the air holes are arranged on one side of the second end portion away from the fixing portion.

In one embodiment, the casing includes a first casing and a second casing, the first casing is disposed on the mask, and the first casing and the second casing are detachably combined to form The accommodating space, wherein the first housing is provided with a first end portion and an exhaust one-way valve body, and the second housing is provided with a second end portion and a filter element.

In one of the embodiments, the first casing is provided with a positioning portion, the positioning portion surrounds the exhaust passage and extends from the first end portion to the second end portion, and the peripheral edge of the second casing is provided with a buckle portion, and the buckle portion It is fastened to the outside of the positioning part.

In one embodiment, the peripheral edge of the abutting portion of the filter element abuts against the inner side of the positioning portion, so that the filter element covers the peripheral edge of the exhaust passage.

In one of the embodiments, the exhaust one-way valve body is a rigid valve plate, the exhaust one-way valve body is accommodated in the container, the exhaust passage is provided with an axis line, and the exhaust one-way valve body is relative to the axis line. Inclined setting, when the exhaust one-way valve body is exhaling, the air flow can pass through the exhaust passage to push open the exhaust one-way valve body, and swing toward the axis line and the second end to form an open state, so that the exhaust passage and the second end are in an open state. The tanks are connected.

In one of the embodiments, the housing further has an inclined portion, the inclined portion is connected to the exhaust passage, and is inclined from the first end portion to the second end portion to be accommodated in the accommodating space, and the exhaust one-way valve body is The utility model has a fixed part and a movable part, the fixed part is fixed on the upper edge of the inclined part, and the movable part abuts against the lower edge of the inclined part.

In one of the embodiments, a filter wearing part protrudes from the mask, a wearing space is formed on the inner side of the filter wearing part, and the mask is provided with a mounting part, the mounting part corresponding to the position of the user's mouth and nose is cut flat on one end of the filter wearing part, Make the first end flat against the mounting part.

In one of the embodiments, the mounting portion penetrates an opening that communicates with the wearing space, the exhaust passage is aligned with the opening, and when the exhaust one-way valve body is exhaled, the cavity can communicate with the wearing space.

Thereby, the exhalation filter device for a mask of the present invention can be used as medical and sanitation, and the exhalation filter device for a mask is configured in the mask to effectively filter and prevent the user from spitting out droplets, germs and particles, and prevent the exhaled germs and droplets from polluting the surrounding environment. , to achieve the effect of safety, hygiene and health and epidemic prevention.

Furthermore, the structure of the exhalation filter device for a mask is light, and the user can disassemble the second shell from the first shell to replace a new filter element, so as to maintain a good exhalation filtering effect and reduce the cost of replacing the mask. , thereby improving the efficiency of the use of masks.

Please refer to FIG. 1 to FIG. 5 , the present invention provides an exhalation filter device 100 for a mask, which is disposed on the outside of a mask 200 and corresponds to the position of the user's mouth and nose. In a preferred embodiment, the mask 200 It is a three-dimensional mask, such as an N95 mask, a bowl-shaped mask and a C-shaped mask. A wearing space 220 is formed on the inner side of the wearing part 210, wherein the mask 200 is provided with a mounting part 230, the mounting part 230 is cut parallel to one end of the filter wearing part 210 corresponding to the position of the user's mouth and nose, and the mounting part 230 penetrates a connected wearing part 230. The opening 240 of the space 220 .

The exhalation filter device 100 for a mask of the present invention includes a casing 10 , a filter element 30 and an exhaust one-way valve body 50 .

The casing 10 has a first end 11 combined with the mask 200 , a second end 12 away from the first end 11 , and a container provided between the first end 11 and the second end 12 . The first end 11 has an exhaust passage 14 that communicates with the accommodation space 13, and the second end 12 has an air hole 15 that communicates with the accommodation space 13 and the exhaust passage 14. In the embodiment, the first end 11 of the housing 10 is flat against the mounting portion 230 of the mask 200 , and the exhaust passage 14 of the housing 10 is aligned with the opening 240 of the mounting portion 230 , so that the housing space 10 can be accommodated 13 communicates with the wearing space 220 of the mask 200.

Further description, the casing 10 includes a first casing 10a and a second casing 10b, the first casing 10a is provided with a first end portion 11, and the second casing 10b is provided with a second end portion 12, in this embodiment In the example, the first housing 10a is provided with a positioning portion 16, the positioning portion 16 surrounds the exhaust passage 14 and extends from the first end portion 11 to the second end portion 12, and a peripheral edge of the second housing 10b is provided with a buckle portion 17, As shown in FIG. 3 , the buckle portion 17 is buckled on the outer side of the positioning portion 16 , so that the first casing 10 a and the second casing 10 b are detachably assembled to form the accommodating space 13 .

The filter element 30 is disposed between the exhaust passage 14 and the air hole 15 of the housing 10 , as shown in FIG. 2 and FIG. 4 . In a preferred embodiment, the filter element 30 has a bearing portion 31 and an abutting portion 31 . The abutting portion 32, the bearing portion 31 abuts on the inner side of the second end portion 12, the abutting portion 32 extends from the periphery of the bearing portion 31 toward the first end portion 11, and the abutting portion 32 abuts against the first end portion 11 of the housing 10. At one end 11 , the filter element 30 is formed with a receiving groove 33 which communicates with the exhaust passage 14 .

3, the peripheral edge of the abutting portion 32 of the filter element 30 abuts against the inner side of the positioning portion 16, so that the filter element 30 covers the peripheral edge of the exhaust passage 14; A fixing block 19 extends from the inner side of the two end portions 12 toward the first end portion 11 of the first housing 10a, and the air holes 15 are arranged on one side of the second end portion 12 away from the fixing block 19, and the bearing portion 31 of the filter element 30 corresponds to The fixing block 19 penetrates a through hole 311 that communicates with the accommodating groove 33 , and the fixing block 19 penetrates through the through hole 311 so that the filter element 30 is positioned inside the second casing 10b and between the first casing 10a and the second casing 10b between.

The exhaust one-way valve body 50 is disposed between the exhaust passage 14 of the housing 10 and the filter element 30. The exhaust one-way valve body 50 has a fixed part 51 and a movable part 52. During the exhalation action, the airflow passes through The exhaust passage 14 and the exhaust one-way valve body 50 are guided to the filter element 30 for filtering and then discharged through the air hole 15. In a preferred embodiment, the exhaust one-way valve body 50 is a rigid valve plate, which can improve the air flow pushing force. Sensitivity, wherein the exhaust passage 14 of the first housing 10a is provided with an axis L, the exhaust check valve body 50 is accommodated in the accommodating groove 33 of the filter element 30, and the exhaust check valve body 50 is opposite to the axis The center line L is set obliquely.

For further description, please refer to FIG. 2 and FIG. 3 , the housing 10 further has an inclined portion 18 , the inclined portion 18 is connected to the exhaust passage 14 of the housing 10 , and the inclined portion 18 extends from the first end 11 to the second The end portion 12 is inclined and accommodated in the accommodating space 13 , that is, the upper edge of the inclined portion 18 is thinner and the lower edge is thicker, and the fixed portion 51 of the exhaust one-way valve body 50 is fixed on the inclined portion 18 . On the upper edge, the movable part 52 abuts against the lower edge of the inclined part 18 , so that when the airflow passes through the exhaust passage 14 , the movable part 52 of the exhaust one-way valve body 50 can be easily pushed away, so that the exhaust one-way valve body 50 can be easily pushed away. Swing toward the axis L of the exhaust passage 14 and the second end portion 12 to form an open state, so that the exhaust passage 14 of the housing 10 and the accommodating groove 33 of the filter element 30 can communicate with each other.

As shown in FIG. 4 , when the user wears the mask 200 to inhale, the exhaust one-way valve body 50 forms a covering state, that is, the exhaust one-way valve body 50 is covered with the inclined portion 18 so as to cover the exhaust passage 14 , so that the outside air cannot enter the wearing space 220 of the mask 200 through the exhaust one-way valve body 50, so that most of the outside air is filtered by the filter wearing part 210 of the mask 200 and enters the wearing space 220; When the user wears the mask 200 for exhalation, most of the airflow exhaled by the user is directed to the exhaust passage 14 of the housing 10 through the opening 240 of the mask 200. At this time, the exhaled airflow can push the exhaust one-way valve body through the exhaust passage 14. 50 forms an open state, and the filter element 30 is sealed around the exhaust passage 14 at this time, so that the exhaled airflow is concentrated and passed through the filter element 30 to filter and block the droplets and germs of the exhaled airflow, and then the filtered exhaled airflow is directed to the stomata 15. discharge.

Thereby, the exhalation filter device 100 for a mask of the present invention can be used as medical and sanitation, and the exhalation filter device 100 for a mask is suitable for any type of mask 200, such as an N95 mask, a bowl-shaped mask, a C-type mask, etc., which can effectively filter And prevent the user from spitting out droplets, germs and particles, preventing the exhaled germs and droplets from polluting the surrounding environment, and achieving the effect of safety, hygiene and health and epidemic prevention.

Furthermore, the structure of the exhalation filter device 100 for a mask is light and compact, and the user can disassemble the second shell 10b from the first shell 10a to replace the filter element 30 with a new one, so as to maintain a good exhalation filtering effect and reduce the The cost of replacing the mask 200 is increased, thereby improving the use efficiency of the mask 200 .

The above-mentioned embodiments are only used to illustrate the present invention, but not to limit the scope of the present invention. All kinds of modifications or changes that do not violate the spirit of the present invention belong to the intended protection category of the present invention.

100: Exhalation filter device for masks 200: mask 210: Filter wear part 220: Dressing Space 230: Installation Department 240: Opening 10: Shell 10a: The first shell 10b: Second shell 11: First end 12: Second end 13: accommodating space 14: Exhaust channel 15: Stomata 16: Positioning part 17: Buckle part 18: Inclined part 19: Fixed block 30: Filters 31: Relying Department 311: Perforation 32: Abutment 33: Container 50: Exhaust check valve body 51: Fixed part 52: Activities Department L: axis line

FIG. 1 is a three-dimensional schematic diagram of an embodiment of the present invention. FIG. 2 is an exploded view of the structure of the embodiment of the present invention. FIG. 3 is a schematic cross-sectional view taken along section line 3-3 of FIG. 1 . FIG. 4 is a schematic diagram of an inhalation action according to an embodiment of the present invention. FIG. 5 is a schematic diagram of an exhalation action according to an embodiment of the present invention.

100: Exhalation filter device for masks

200: mask

210: Filter wear part

220: Dressing Space

10: Shell

10a: The first shell

10b: Second shell

11: First end

12: Second end

15: Stomata

30: Filters

Claims (10)

An exhalation filter device for a mask, which is arranged on the outer side of a mask and corresponds to the position of the mouth and nose of a user, and the exhalation filter device for a mask comprises: a shell, which has a first end connected to the mask, a second end away from the first end, and an accommodating space between the first end and the second end , the first end portion runs through an exhaust passage that communicates with the accommodating space, and the second end portion passes through an air hole that communicates with the accommodating space and the exhaust passage; a filter element disposed between the exhaust passage and the air hole; and An exhaust one-way valve body is arranged between the filter element and the exhaust passage. When the exhaust one-way valve body is in the action of exhalation, the air flow is guided from the exhaust passage to the filter element for filtering and then discharged through the air hole. . The exhalation filter device for a mask according to claim 1, wherein the filter element has a bearing portion and an abutting portion, the bearing portion abuts on the inner side of the second end portion, and the abutting portion is self-aligning The peripheral edge of the bearing portion extends toward the first end portion, and the abutting portion abuts against the first end portion, so that the filter element forms a cavity communicating with the exhaust passage. The exhalation filter device for a mask as claimed in claim 2, wherein a fixing block extends from the inner side of the second end toward the first end, and the bearing portion corresponds to the fixing portion and penetrates through a connecting portion that communicates with the accommodating groove. a perforation, the fixing part is penetrated through the perforation so that the filter element is positioned at the second end part, and the air hole is arranged on one side of the second end part away from the fixing part. The exhalation filter device for a mask as claimed in claim 2, wherein the housing comprises a first housing and a second housing, the first housing is disposed on the mask, and the first housing and the The second housing is detachably combined to form the accommodating space, wherein the first housing is provided with the first end and the exhaust one-way valve body, and the second housing is provided with the second end and the filter. The exhalation filter device for a mask as claimed in claim 4, wherein the first housing is provided with a positioning portion, the positioning portion surrounds the exhaust passage and extends from the first end toward the second end, the The peripheral edge of the second casing is provided with a buckle portion, and the buckle portion is buckled at the outer side of the positioning portion. The exhalation filter device for a mask according to claim 5, wherein the peripheral edge of the abutting portion of the filter element abuts against the inner side of the positioning portion, so that the filter element covers the peripheral edge of the exhaust passage. The exhalation filter device for a mask as claimed in claim 2, wherein the exhaust one-way valve body is a rigid valve plate, the exhaust one-way valve body is accommodated in the container, and the exhaust passage is provided with an axis line, the exhaust one-way valve body is inclined relative to the axis line, and when the exhaust one-way valve body is exhaling, the airflow can pass through the exhaust passage to push the exhaust one-way valve body away, and move toward the exhaust one-way valve body. The axis line and the second end swing to form an open state, so that the exhaust passage communicates with the accommodating groove. The exhalation filter device for a mask as claimed in claim 7, wherein the housing further has an inclined portion, the inclined portion is connected to the exhaust passage, and is inclined from the first end portion to the second end portion. Being accommodated in the accommodating space, the exhaust one-way valve body has a fixed part and a movable part, the fixed part is fixed on the upper edge of the inclined part, and the movable part abuts against the lower edge of the inclined part. The exhalation filter device for a mask according to claim 1, wherein a filter wearing part protrudes from the mask, a wearing space is formed inside the filter wearing part, and the mask is provided with a mounting part, and the mounting part corresponds to the user's The position of the mouth and nose is cut flat on one end of the filter wearing part, so that the first end part is flat on the mounting part. The exhalation filter device for a mask as claimed in claim 9, wherein the mounting part penetrates an opening communicating with the wearing space, the exhaust passage is aligned with the opening, and the exhaust one-way valve body is in the action of exhaling. The container can communicate with the wearing space.

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