CN114190630B - Fan filter for mask - Google Patents

Abstract

The invention provides a fan filter device for a mask, which is arranged on the outside of a mask and corresponds to the position of the mouth and nose of a user, and a wearing space is provided between the inside of the mask and the user. The fan filter device for the mask comprises a shell, a fan filter component and an exhaust one-way valve body. When the user inhales, the fan filter component can introduce an external airflow toward the mask, so that the external airflow is introduced into the wearing space of the mask from an air inlet hole of the shell; when the user exhales, the user generates an exhaled airflow from the wearing space of the mask, so that the exhaled airflow is guided to an exhaust hole of the shell for discharge; thereby, the invention can purify the air outside the filtered mask and blow the filtered air into the inside of the mask, thereby improving the effect of gas flow inside the mask.

Description

Fan filter device for mask

Technical Field

The invention relates to a mask ventilation and filtering product, in particular to a fan filtering device for a mask.

Background technique

Recently, there has been a 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 through the mouth and nose, so as to protect their own health.

However, many medical-grade masks, such as N95 three-dimensional masks, do not have good air permeability. For medical staff, wearing the above-mentioned masks for a long time can easily cause the mouth and nose to become stuffy, thereby reducing the comfort of medical staff wearing the above-mentioned masks.

Summary of the invention

The main purpose of the present invention is to provide a fan filter device for a mask, which can be detachably combined with the outside of the mask, can clean and filter the air outside the mask, and blow the filtered air into the inside of the mask, thereby improving the effect of gas flow inside the mask.

In order to achieve the above-mentioned purpose, the present invention provides a fan filter device for a mask, which is arranged on the outside of a mask and corresponds to the position of the user's mouth and nose, and there is a wearing space between the inside of the mask and the user, and the mask fan filter device includes a shell, a fan filter assembly and an exhaust check valve body. The shell is combined with the mask, and the shell has an exhaust part and an air inlet part. The exhaust part and the air inlet part are respectively connected to the wearing space, and the shell also has an exhaust hole connected to the exhaust part, and an air inlet hole connected to the air inlet part; the fan filter assembly is installed in the air inlet part, and the fan filter assembly is provided with an exhaust part and a power supply part. The exhaust part introduces an external airflow to the mask, and the external airflow is guided from the air inlet hole to the air inlet part and enters the wearing space. The filter power supply part is electrically connected to the exhaust part and can provide the power required for the exhaust part to operate; the exhaust check valve body is arranged in the exhaust part. When the exhaust check valve body is in the exhalation action, the user generates an exhaled airflow from the wearing space, so that the exhaled airflow enters the exhaust part and is guided to the exhaust hole for discharge.

In one embodiment, the shell is provided with a dividing line, the dividing line is provided between the exhaust portion and the air inlet portion, and the exhaust portion is in contact with the mask relative to the air inlet portion.

In one embodiment, the exhaust portion is provided with an exhaust channel, the exhaust channel is connected to the wearing space and the exhaust hole, and the exhaust channel is provided with an axial line perpendicular to the dividing line, the exhaust one-way valve body is inclined relative to the axial line, and when the exhaust one-way valve body is exhaled, the exhaled air flow can pass through the exhaust channel to push open the exhaust one-way valve body, and swing toward the axial line and the dividing line to form an open state.

In one embodiment, the exhaust portion also has an inclined seat, which is connected to the exhaust channel and inclined toward the dividing line. The exhaust one-way valve body is a hard valve plate. The exhaust one-way valve body has a fixed portion and a movable portion. The fixed portion is fixed on the upper edge of the inclined seat, and the movable portion rests on the lower edge of the inclined seat.

In one embodiment, the shell includes a first shell and a second shell, the first shell is provided with an exhaust portion, and the second shell is provided with an air intake portion. The first shell and the second shell are detachably combined so that the exhaust portion forms an exhaust space connecting the exhaust hole and the exhaust channel; the fan filter assembly has a filter material, which is arranged between the suction piece and the air intake hole and is used to filter the external airflow entering the air intake portion.

In one of the embodiments, the air intake portion has an air intake space connected to the air intake hole, and the air intake portion is provided with a fixed column away from the air intake hole, the fixed column extends toward the mask and is vertically arranged relative to the dividing line, and the fixed column runs through a guide channel, the exhaust portion has a group connection hole, the group connection hole is arranged on one side of the exhaust channel and connected to the wearing space, the fixed column is passed through the group connection hole, so that the air intake space is connected to the wearing space through the guide channel.

In one embodiment, the first shell has a positioning portion surrounding the exhaust passage and extending toward the dividing line, and the second shell has a buckling portion surrounding the fixing column and capable of buckling with the outer side of the positioning portion.

In one embodiment, the air inlet holes are distributed on one side of the second shell along the axis, and the air outlet holes are arranged through the periphery of the buckle portion, and the arrangement direction of the air outlet holes is arranged perpendicular to the axis.

In one embodiment, the second shell is further provided with a stopper, the stopper extends outward relative to the buckle portion, and an exhaust area connected to the exhaust hole is formed between the stopper and the buckle portion.

In one embodiment, the mask has a protruding filter wearing portion, a wearing space is formed inside the filter wearing portion, and the mask is provided with a mounting portion, the mounting portion is parallel to one end of the filter wearing portion corresponding to the position of the user's mouth and nose, so that the first shell can be flat against the mounting portion, and the mounting portion is penetrated by an opening, so that the guide channel and the exhaust channel are respectively connected to the wearing space through the opening.

The beneficial effects of the present invention are:

Thereby, the present invention can filter the external airflow and blow it into the wearing space of the mask, providing the user with fresh air to breathe. Moreover, the suction piece can increase the gas flow inside the mask, thereby reducing the temperature of the wearing space, so as to achieve the purpose of improving the comfort of wearing the mask.

In addition, the fan filter device for masks has a light structure, and users can disassemble the shell by themselves to replace new filter materials to maintain good exhalation filtering efficiency and achieve the purpose of repeated cycle filtering.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Figure 1: A diagram showing the implementation of a mask according to an embodiment of the present invention;

FIG2 is a structural exploded view of an embodiment of the present invention;

FIG3 is a schematic cross-sectional view of FIG1 taken along section line 3-3;

FIG4 is a schematic diagram of the use state of the embodiment of the present invention (I);

FIG. 5 is a schematic diagram of the use status of an embodiment of the present invention (II).

Description of Reference Numerals

200 masks

210 Wearable Space

220 Filter Wearing Department

230 Installation Department

240 openings

100 Fan filter device for masks

10 Shell

10a First housing

10b Second housing

11 Exhaust

111 Exhaust channel

112 sets of connection holes

113 Exhaust Space

114 tilt seat

12 Air intake

121 air intake space

122 fixed column

123 diversion channel

13 Exhaust holes

14 air intake holes

15 Positioning unit

16 buckle joint

17 stopper

18 Exhaust area

30 Fan filter assembly

31 Vacuum parts

32 Filter material

33 Power supply

50 Exhaust check valve body

51 Fixed part

52 Activities Department

S separator

L axis

A1 External airflow

A2 Exhaled airflow.

Detailed ways

The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

Please refer to Figures 1 to 5. The present invention provides a fan filter device 100 for a mask, which is arranged on the outside of a mask 200 and corresponds to the mouth and nose position of the user, and a wearing space 210 is provided between the inside of the mask 200 and the user. As shown in Figure 4, the mask 200 is a three-dimensional mask, such as an N95 mask, a bowl-shaped mask, and a C-shaped mask. The mask 200 protrudes with a hemispherical filter wearing portion 220, and the wearing space 210 is provided on the inside of the filter wearing portion 220. The mask 200 is provided with a mounting portion 230, and the mounting portion 230 is parallel to one end of the filter wearing portion 220 corresponding to the mouth and nose position of the user, and the mounting portion 230 penetrates an opening 240 connected to the wearing space 210.

The fan filter device 100 for a mask of the present invention comprises a housing 10 , a fan filter assembly 30 and an exhaust check valve body 50 .

The shell 10 is combined with the mask 200, and the shell 10 has an exhaust portion 11 and an air inlet portion 12, the exhaust portion 11 and the air inlet portion 12 are respectively connected to the wearing space 210 of the mask 200, and the shell 10 also has an exhaust hole 13 connected to the exhaust portion 11, and an air inlet hole 14 connected to the air inlet portion 12; for further explanation, please refer to FIG. 3, the shell 10 is provided with a dividing line S, the dividing line S is provided between the exhaust portion 11 and the air inlet portion 12, and the exhaust portion 11 is relative to the air inlet portion 12 and abuts against the mask 200, wherein the exhaust portion 11 is penetrated with an exhaust channel 111, the exhaust channel 111 is connected to the wearing space 210 of the mask 200 and the exhaust hole 13, and the exhaust channel 111 is provided There is an axial line L with a vertical dividing line, and the air inlet portion 12 has an air inlet space 121 inside, the air inlet space 121 is connected to the air inlet hole 14, and the air inlet portion 12 is provided with a fixing column 122 away from the air inlet hole 14, the fixing column 122 extends toward the mask 200 and is vertically arranged relative to the dividing line S, and the fixing column 122 passes through a guide channel 123 connected to the air inlet space 121, the exhaust portion 11 has a group connection hole 112, the group connection hole 112 is arranged on one side of the exhaust channel 111 and connected to the wearing space 210 of the mask 200, the fixing column 122 of the air inlet portion 12 is penetrated by the group connection hole 112 of the exhaust portion 11, so that the air inlet space 121 is conducted to the wearing space 210 through the guide channel 123.

In a preferred embodiment, the shell 10 includes a first shell 10a and a second shell 10b, the first shell 10a is provided with an exhaust portion 11, and the second shell 10b is provided with an air intake portion 12. The first shell 10a and the second shell 10b are detachably combined so that the exhaust portion 11 forms an exhaust space 113, and the exhaust space 113 is connected to the exhaust hole 13 and the exhaust channel 111; further explained, the first shell 10a is provided with a positioning portion 15, the positioning portion 15 surrounds the exhaust channel 111 and extends toward the dividing line S, and the second shell 10b is provided with a buckling portion 16, the buckling portion 16 surrounds the fixing column 122, and the buckling portion 16 can be correspondingly buckled on the outer side of the positioning portion 15, so that the first shell 10a and the second shell 10b are combined to form the exhaust space 113.

It is worth mentioning that the exhaust hole 13 and the air inlet 14 are respectively arranged on the second shell 10b. As shown in Figure 3, the air inlet 14 is distributed on one side of the second shell 10b along the axis L, and the exhaust hole 13 is penetrated through the periphery of the buckle portion 16, wherein the setting direction of the exhaust hole 13 is perpendicular to the axis L of the exhaust channel 111; and the second shell 10b is also provided with a stop portion 17, which extends outward relative to the buckle portion 16, so that an exhaust area 18 connected to the exhaust hole 13 is formed between the stop portion 17 and the buckle portion 16.

The fan filter assembly 30 is installed on the air inlet portion 12 of the shell 10. The fan filter assembly 30 is provided with an exhaust member 31, a filter material 32 and a power supply member 33. In this embodiment, the exhaust member 31 can be a micro fan or a blower. The exhaust member 31 introduces an external airflow A1 toward the mask 200. The external airflow A1 is guided from the air inlet hole 14 to the guide channel 123 and enters the wearing space 210 of the mask 200. The filter material 32 is arranged between the exhaust member 31 and the air inlet hole 14, and is used to filter the external airflow A1 entering the air inlet portion 12. The power supply member 33 is electrically connected to the exhaust member 31. In this embodiment, the power supply member 33 is a battery, which can provide the power required for the actuation of the exhaust member 31. In this embodiment, the fan filter assembly 30 is arranged in the air inlet space 121 of the air inlet portion 12, and the axis of the exhaust member 31 is arranged along the axis line L of the exhaust channel 111.

The exhaust one-way valve body 50 is disposed at the exhaust portion 11 of the shell 10. When the exhaust one-way valve body 50 exhales, the user generates an exhaled airflow A2 from the wearing space 210 of the mask 200. The exhaled airflow enters the exhaust channel 111 and is guided to the exhaust hole 13 for discharge. In a preferred embodiment, the exhaust one-way valve body 50 is a hard valve sheet, which can improve the sensitivity of the airflow push. The exhaust one-way valve body 50 has a fixed portion 51 and a movable portion 52.

It is worth mentioning that the exhaust check valve body 50 is accommodated in the exhaust space 113 of the exhaust portion 11, and the exhaust check valve body 50 is inclined relative to the axis line L; please refer to Figures 3 to 5. In this embodiment, the exhaust portion 11 also has an inclined seat 114. The upper edge thickness of the inclined seat 114 is thinner and the lower edge thickness is thicker. The inclined seat 114 is connected to the exhaust channel 111 and inclined toward the dividing line S. The fixed portion 51 of the exhaust check valve body 50 is fixed to the upper edge of the inclined seat 114, and the movable portion 52 is against the lower edge of the inclined seat 114. When the airflow passes through the exhaust channel 111, the movable portion 52 of the exhaust check valve body 50 can be easily pushed open, so that the exhaust check valve body 50 swings toward the axis line L and the dividing line of the exhaust channel 111 to form an open state, so that the exhaust channel 111 of the shell 10 can be connected to the exhaust space 113.

Please refer to Figures 3 and 4. When the user wears the mask 200 to inhale, the exhaust check valve body 50 forms a covering state, that is, the exhaust check valve body 50 covers the inclined seat 114 so as to cover the exhaust channel 111. The user can start the suction member 31 of the fan filter assembly 30 to extract the external airflow A1 outside the mask 200, so that most of the external airflow A1 is mainly introduced into the air intake space 121 of the air intake part 12 through the air intake hole 14. At this time, the filter material 32 can filter and block the dust and bacteria in the external airflow A1, and then guide the filtered external airflow A1 to the guide channel 123 and blow it out to the wearing space 210 of the mask 200; thereby, the user can directly breathe the filtered external airflow A1 in the wearing space 210 of the mask 200, so that the user can breathe fresh air. In addition, the suction member 31 can improve the gas flow efficiency inside the mask 200, thereby reducing the temperature of the wearing space 210, so as to achieve the purpose of improving the comfort of wearing the mask 200.

Furthermore, when the filtering effect of the filter material 32 is reduced after long-term use, the user can replace the filter material 32 with a new one by disassembling means, so that the fan filter assembly 30 can maintain a good air intake filtering effect and achieve the purpose of repeated cycle filtering.

Please refer to Figures 3 and 5. When the user wears the mask 200 to exhale, most of the exhaled air flow A2 generated by the user is concentratedly guided to the exhaust channel 111 of the shell 10 through the opening 240 of the mask 200. At this time, the exhaled air flow A2 can push the exhaust check valve body 50 through the exhaust channel 111 to form an open state, and guide the exhaled air flow A2 to the exhaust hole 13 for discharge. It is worth mentioning that since the exhaust hole 13 is arranged on the periphery of the buckle part 16, and the setting direction of the exhaust hole 13 is perpendicular to the axis L, the exhaust hole 13 forms a side exhaust port, and the stopper 17 of the shell 10 can block the exhaled air flow from flowing along the axis L, so that the exhaled air flow A2 can be concentratedly guided to the exhaust area 18 through the exhaust hole 13 for discharge.

Thus, the present invention has the following effects:

1. The present invention can filter the external airflow A1 and blow it into the wearing space 210 of the mask 200, providing the user with fresh air to breathe. Moreover, the air extraction member 31 can increase the gas flow inside the mask 200, thereby reducing the temperature of the wearing space 210, so as to achieve the purpose of improving the comfort of wearing the mask 200.

2. The structure of the fan filter device 100 for a mask is light and the user can disassemble the housing 10 by himself to replace the new filter material 32 to maintain good exhalation filtering efficiency and achieve the purpose of repeated cycle filtering.

3. The stopper 17 of the shell 10 can block the exhaled airflow A2 from flowing along the axis L, so that the exhaled airflow A2 can be concentrated and directed to the exhaust area 18 through the exhaust hole 13 to be discharged, so as to prevent the droplets and germs exhaled by the user from coughing or snoring from being discharged directly toward the front of the mask 200, thereby reducing the risk of infection among the crowd and achieving the effect of hygienic safety and health prevention.

The above description is only a preferred embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims (6)

1. A fan filter for a mask, which is disposed at an outer side of the mask and corresponds to an oral-nasal position of a user, and a wearing space is provided between an inner side of the mask and the user, the fan filter for the mask is characterized in that the fan filter for the mask comprises:

The shell is combined with the mask and provided with a first shell, a second shell, an exhaust part, an air inlet part and a separation line arranged between the exhaust part and the air inlet part, the first shell is provided with the air outlet part, the second shell is provided with the air inlet part, the first shell and the second shell are combined in a detachable mode, the air outlet part and the air inlet part are respectively communicated with the wearing space, the shell is also provided with an exhaust hole connected with the air outlet part, an air inlet hole connected with the air inlet part, the air inlet part is internally provided with an air inlet space communicated with the air inlet hole, the air inlet part is provided with a fixed column far away from the air inlet hole, the fixed column extends towards the mask and is vertically arranged relative to the separation line, the fixed column penetrates through a guide channel, the air outlet part is provided with a group connecting hole, the group connecting hole is arranged on one side of an air outlet channel and is communicated with the wearing space, the air inlet space is communicated with the wearing space through the guide channel, the air outlet part is abutted against the air inlet part, the air inlet channel is provided with the air inlet channel, the exhaust channel is vertically communicated with the air outlet channel and the air outlet channel, and the separation line is vertically arranged;

the fan filter assembly is arranged on the air inlet part and is provided with an air suction piece, a power supply piece and a filter material, the air suction piece guides an external air flow to the mask, the external air flow is guided to the air inlet part from the air inlet hole and enters the wearing space, the power supply piece is electrically connected with the air suction piece and can provide electric power required by the action of the air suction piece, and the filter material is arranged between the air suction piece and the air inlet hole and is used for filtering the external air flow entering the air inlet part; and

The exhaust one-way valve body is arranged on the exhaust part, the exhaust one-way valve body is obliquely arranged relative to the axial lead, and when the exhaust one-way valve body operates through jetting, a user generates an exhalant air flow from the wearing space so as to enable the exhalant air flow to enter the exhaust part and be led to the exhaust hole to be exhausted, and the exhalant air flow can pass through the exhaust channel to push away the exhaust one-way valve body and swing towards the axial lead and the separation line to form an open state.

2. The fan filter device for mask of claim 1, wherein the exhaust part further comprises an inclined seat connected to the exhaust passage and inclined toward the separation line, the exhaust check valve body is a rigid valve plate, the exhaust check valve body comprises a fixed part and a movable part, the fixed part is fixed on the upper edge of the inclined seat, and the movable part is abutted against the lower edge of the inclined seat.

3. The fan filter device according to claim 1, wherein the first housing has a positioning portion surrounding the exhaust passage and extending toward the separation line, the second housing has a fastening portion surrounding the fixing post, and the fastening portion is fastened to an outer side of the positioning portion.

4. A fan filter for mask according to claim 3, wherein the air inlet is disposed on one side of the second housing along the axis, the air outlet is disposed through the periphery of the fastening portion, and the direction of the air outlet is perpendicular to the axis.

5. The fan filter device for mask of claim 4, wherein the second housing further comprises a stopping portion, the stopping portion extends outwards relative to the fastening portion, and an exhaust area communicating with the exhaust hole is formed between the stopping portion and the fastening portion.

6. The fan filter device for mask according to claim 5, wherein the mask is protruded with a filtering wearing part, the wearing space is formed inside the filtering wearing part, the mask is provided with a mounting part, the mounting part is flat cut at one end of the filtering wearing part corresponding to the position of the nose and the mouth of the user, so that the first shell can be flat attached to the mounting part, and an opening is penetrated through the mounting part, so that the flow guiding channel and the exhaust channel are respectively communicated with the wearing space through the opening.