CN112426639A

CN112426639A - Wearable miniature air curtain system for protecting mouth and nose

Info

Publication number: CN112426639A
Application number: CN202011367474.1A
Authority: CN
Inventors: 艾正涛; 邢超杰; 刘政轩; 张国强
Original assignee: Hunan University
Current assignee: Hunan University
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-03-02

Abstract

The invention discloses a wearable micro air curtain system for protecting mouth and nose, which comprises a frame column, wherein an air inlet channel is formed in one side of the frame column, an air inlet filter screen and an air inlet accelerating pump are connected in the air inlet channel, an air inlet filter is arranged between the air inlet filter screen and the air inlet accelerating pump, the upper end and the lower end of the frame column are respectively connected with an upper frame and a lower frame, an air curtain forming channel is formed in the upper frame in a chiseled mode, an air curtain strip seam is formed in the lower inner wall of the air curtain forming channel, and an air outlet channel communicated with the air curtain strip seam is formed in the other side of the frame column in a. The breathing zone is separated from the outside air by the miniature air curtain, so that the aerosol generated in the oral cavity can be effectively prevented from spreading outwards and the aerosol generated outside from spreading inwards, a user and surrounding personnel are protected, the user can adjust the air flow speed according to different use scenes, the control requirements of different scenes are met, and meanwhile, the comfort of the user is improved due to the arrangement of the elastic cotton, the nose pad and the like.

Description

Wearable miniature air curtain system for protecting mouth and nose

Technical Field

The application relates to the field of medical equipment, in particular to a wearable micro air curtain system for protecting mouth and nose.

Background

In a crowded place, pathogens and the like which can cause diseases can be carried in the air, and when the air is not diluted or disinfected, the pathogens in the air can enter the respiratory tract through the mouth and the nose of a person, so that a series of diseases are caused. At present, for the public, the mouth and nose protection measures are mainly masks, the masks are mostly disposable, the use of a large number of masks cannot avoid resource waste, and the untimely treatment can also cause secondary pollution.

Under the normal state of epidemic situation, most of people use the disposable medical mask in daily protection. At present, China has no requirement on the particle filtering efficiency of the disposable medical mask, and the particle filtering efficiency is an important index for the virus protection effect. The fuzzy filtering efficiency causes that the disposable medical masks produced by different manufacturers have high or low particle filtering efficiency, and cannot well meet the requirement that people use the masks in places with higher risks. The N95 mask can make up the deficiency of disposable medical mask, and the particulate matter filtering efficiency can reach more than 95%. But there is controversy as to whether women during pregnancy can wear N95 masks. Further, masks such as N95, which require close fitting, have a certain resistance to breathing, and thus, patients with cardiopulmonary insufficiency may have discomfort such as difficulty in breathing and even may have accidents such as an increased basic disease. Meanwhile, the N95 mask is not suitable for children, and is easy to damage the heart and lung functions after being worn for a long time.

In order to reduce these problems, some novel mask air curtain structures have been developed, and some researchers have proposed a harmful substance blocking type health mask using an air curtain, such as the mask disclosed in chinese patent CN109069885A, to form an air curtain around the chin of a user to block the inflow of harmful substances. Some researchers have proposed an air curtain protective mask, such as those disclosed in chinese patents CN204191650U and CN105595465A, which can effectively solve the problem of carbon dioxide re-inhalation. However, the mask air curtain system proposed above is weak in protection against viruses, and cannot improve the protection level according to the risk level of different scenes.

Disclosure of Invention

The invention aims to solve the problems and provides a wearable micro air curtain system for protecting mouth and nose.

The utility model provides a miniature air curtain system of wearable protection oronasal, includes the frame post, frame post one side is opened and is dug there is inlet channel, the inlet channel in-connection has filter screen and the accelerated pump that admits air, it is equipped with the filter that admits air to admit air between filter screen and the accelerated pump that admits air, both ends are connected with frame and lower frame respectively about the frame post, it has air curtain formation way to go up to chisel in the frame, the air curtain formation way inner wall is dug down has air curtain strip seam, the air outlet channel that is linked together with air curtain strip seam is dug to frame post another side, the air outlet channel in-connection has the filter screen of giving vent to anger and gives vent to anger the filter, be connected with drive battery and speed governing switch on the frame post, admit air the equal electric connection of accelerated pump, the filter of.

Furthermore, a breathing air supply channel is chiseled in the frame column, the air inlet channel, the breathing air supply channel, the air curtain forming channel, the air curtain strip seam and the air outlet channel are all communicated, when the device is used, air outside the device can be sucked into the air inlet channel through an air inlet accelerating pump, the air processed by the air inlet filter screen and the air inlet filter is divided into two parts, one part of the air is jetted downwards from the air curtain strip seam to form an air curtain for closing the mouth and nose after moving along the air curtain forming channel, the other part of the air is sent to a breathing area through the breathing air supply channel to be used for breathing by a user, finally, the air flow is converged at the breathing air supply channel and is mixed with the air exhaled by the user and the air in part of the air curtain to be discharged from the air outlet channel, and the air is discharged into the surrounding environment after.

Further, go up the frame and all be equipped with the elasticity cotton with the lower frame inboard, all be connected with soft elastomer between elasticity cotton and last frame and the lower frame, soft elastomer and the cotton injury of setting up of elasticity can reduce the device to the people's face, also can reduce the probability of gas leakage, and soft elastomer can pass through elasticity cotton and face subsides simultaneously, increases the travelling comfort when the user wears.

Furthermore, the inner side of the upper frame is connected with a nose support, the frame column is connected with a telescopic head band, the nose support and the telescopic head band are both made of elastic materials, the nose support is convenient to set, the device is convenient to fix to the face, and the telescopic head band is convenient to wear.

Further, be equipped with closing device in the frame post, closing device includes the spout, the spout is excavated in the frame post, be connected with a plurality of first magnets on the spout inner wall, be equipped with the solid piece of flexible in the spout, be connected with second magnet on the flexible solid piece, second magnet is the synonym magnetic pole with the relative magnetic pole of first magnet, the flexible solid piece is connected with first magnet through second magnet, and second magnet and a plurality of first magnet all match, and the setting of the solid piece of flexible can be better block comparatively strong gas or liquid splash, thereby the user can be according to actual conditions needs, selects the first magnet of using second magnet and different positions to adsorb and close and adjust gas curtain position department.

Furthermore, all rotate between frame post and last frame and the lower frame and be connected with a pair of rotary device, it is a pair of rotary device sets up about the axis symmetry of frame post, and rotary device's setting is convenient for the rotation regulation of frame post to be applicable to the crowd of different types of face.

Further, rotary device includes upper surface piece and lower surface piece, upper surface piece and lower surface piece all with frame post fixed connection, be connected with the rotation between upper surface piece and the lower surface piece and wind the post, the rotation is connected with the fixed column around the post outside rotation, be connected with two revolving fragments on the fixed column outer wall, two the revolving fragment respectively with last frame and lower frame fixed connection, through set up upper surface piece, revolving fragment, rotation between frame post and upper frame and lower frame around post, fixed column and lower surface piece, convenient to use person adjusts the rotation angle of frame post to the personnel of the different types of face of being convenient for wear.

Compared with the prior art, the invention has the following advantages:

the breathing zone is separated from the outside air by the miniature air curtain, so that the aerosol generated in the oral cavity can be effectively prevented from spreading outwards and the aerosol generated outside from spreading inwards, a user and surrounding personnel are protected, the user can adjust the air flow speed according to different use scenes, the control requirements of different scenes are met, and meanwhile, the comfort of the user is improved due to the arrangement of the elastic cotton, the nose pad and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a wearable mouth-nose protection micro air curtain system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a portion of a wearable mouth-nose protective miniature air curtain system according to an embodiment of the present invention;

FIG. 3 is a schematic view of a closure device according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a rotating device according to an embodiment of the present invention;

fig. 5 is a top view of a wearable mouth-nose protective miniature air curtain system in an embodiment of the invention.

In the figure: 1. frame column, 2, air inlet channel, 3, air inlet filter screen, 4, air inlet accelerating pump, 5, air inlet filter, 6, breathing air channel, 7, air curtain forming channel, 8, air curtain strip seam, 9, air outlet channel, 10, air outlet filter screen, 11, air outlet filter, 12, driving battery, 13, speed regulating switch, 14, upper frame, 15, lower frame, 16, nose support, 17, soft elastic body, 18, elastic cotton, 19, flexible headband, 20, closing device, 2001, first magnet, 2002, chute, 2003, second magnet, 2004, flexible solid piece, 21, rotating device, 2101, upper surface piece, 2102, rotating piece, 2103, rotating around column, 2104, fixed column, 2105, lower surface piece.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.

The invention discloses a wearable micro air curtain system for protecting mouth and nose, which comprises a frame column 1, wherein an air inlet channel 2 is drilled at one side of the frame column 1, an air inlet filter screen 3 and an air inlet accelerating pump 4 are connected in the air inlet channel 2, an air inlet filter 5 is arranged between the air inlet filter screen 3 and the air inlet accelerating pump 4, the air inlet accelerating pump 4 can suck air into the air inlet channel 2 and adjust the speed of the air sucked into the air inlet channel 2 and flowing in the air inlet channel 2 when working, the air inlet filter screen 3 and the air inlet filter 5 can carry out filtration and other treatments on the air entering the air inlet channel 2 so as to form clean air, the upper end and the lower end of the frame column 1 are respectively connected with an upper frame 14 and a lower frame 15, an air curtain forming channel 7 is drilled in the upper frame 14, an air curtain strip seam 8 is drilled on the lower inner wall of the air curtain forming channel 7, an air outlet channel 9 communicated with the air curtain strip seam 8 is drilled at the other side of the frame column 1, an air outlet filter screen 10 and an air outlet filter 11 are connected in an air outlet channel 9, a breathing air supply channel 6 is drilled in a frame column 1, an air inlet channel 2, the breathing air supply channel 6, an air curtain forming channel 7, an air curtain strip seam 8 and the air outlet channel 9 are all communicated, when the device is used, air outside the device can be sucked into the air inlet channel 2 through an air inlet accelerating pump 4, the air processed by the air inlet filter screen 3 and the air inlet filter 5 is divided into two parts, one part of the air is jetted downwards from the air curtain strip seam 8 after moving along the air curtain forming channel 7 to form an air curtain with a closed mouth and nose, the other part of the air is sent to a breathing zone through the breathing air supply channel 6 for a user to breathe, finally, the air flow is converged at the breathing air supply channel 6 and is mixed with the air exhaled by the user and the air in part of the air curtain to be discharged from the air outlet channel 9, and is discharged to the surrounding.

Wherein, be connected with drive battery 12 and speed governing switch 13 on the frame post 1, admit air the accelerating pump 4, the filter 5 that admits air, the filter 11 of giving vent to anger, the equal electric connection of speed governing switch 13 and drive battery 12, drive battery 12 provides kinetic energy for the work of the accelerating pump 4 that admits air, the filter 5 that admits air, the filter 11 of giving vent to anger, speed governing switch 13 control drive battery 12 work and stop, speed governing switch 13 divides into one, two and three gear, the speed that air admission passageway 2 and flow in admission passageway 2 can be controlled to different gears, thereby control air curtain speed.

Referring to fig. 1-5, the inner sides of the upper frame 14 and the lower frame 15 are both provided with elastic cotton 18, a soft elastic body 17 is connected between the elastic cotton 18 and the upper frame 14 and the lower frame 15, the arrangement of the soft elastic body 17 and the elastic cotton 18 can reduce the damage of the device to the human face and can also reduce the probability of gas leakage, meanwhile, the soft elastic body 17 can be firmly attached to the human face through the elastic cotton 18, the wearing comfort of a user is improved, the inner side of the upper frame 14 is connected with a nose pad 16, the frame column 1 is connected with a telescopic head band 19, the nose pad 16 and the telescopic head band 19 are both made of elastic materials, the arrangement of the nose pad 16 facilitates the device to be fixed to the face, and the arrangement of the telescopic head.

Referring to fig. 1-3, a sealing device 20 is disposed in a frame column 1, the sealing device 20 includes a sliding groove 2002, the sliding groove 2002 is cut in the frame column 1, a plurality of first magnets 2001 are connected to an inner wall of the sliding groove 2002, a bendable solid piece 2004 is disposed in the sliding groove 2002, a second magnet 2003 is connected to the bendable solid piece 2004, opposite magnetic poles of the second magnet 2003 and the first magnet 2001 are different magnetic poles, the bendable solid piece 2004 is connected to the first magnet 2001 through the second magnet 2003, the second magnet 2003 and the plurality of first magnets 2001 are matched, the bendable solid piece 2004 can better block strong gas or liquid splashing, and a user can selectively use the second magnet 2003 and the first magnets 2001 at different positions for adsorption according to actual requirements, so as to close and adjust the gas curtain position.

Referring to fig. 2-4, a pair of rotating devices 21 are rotatably connected between the frame column 1 and the upper and

lower frames

14 and 15, the pair of rotating devices 21 are symmetrically arranged about the central axis of the frame column 1, the arrangement of the rotating devices 21 facilitates the rotation adjustment of the frame column 1, so as to be suitable for people with different face types, the rotating devices 21 include an upper surface sheet 2101 and a lower surface sheet 2104 5, the upper surface sheet 2101 and the lower surface sheet 2105 are fixedly connected with the frame column 1, a rotating and winding column 2103 is connected between the upper surface sheet 2101 and the lower surface sheet 2105, a fixing column is rotatably connected outside the rotating and winding column 2103, two rotating sheets 2102 are connected on the outer wall of the fixing column 2104, the two rotating sheets 2102 are fixedly connected with the upper and

lower frames

14 and 15, respectively, by arranging the upper surface sheet 2101, the rotating sheet 2102, the rotating and winding column 2103, the fixing column 2104 and the lower surface sheet 2105 between the frame column 1 and the upper and, the user can conveniently adjust the rotation angle of the frame column 1, thereby being convenient for people with different facial shapes to wear.

When the air purifier is used in a office place with few staff, a user turns on the speed regulating switch 13 to set the gear speed to be the first gear, and at the moment, outside air enters the air inlet channel 2 and is filtered by the air inlet filter screen 3 and the air inlet filter 5, then the air inlet accelerating pump 4 driven by the driving battery 12 accelerates, the clean air after accelerating filtration is divided into two parts, one part flows along the air curtain forming channel 7 and is jetted downwards from the air curtain strip seam 8 to form an air curtain with a closed mouth and nose, the air flow is mainly converged at the lower frame 15 and is collected by the lower frame 15, the other part is sent to a breathing zone through the breathing air-sending channel 6, the air exhaled by the personnel is mixed with the air in part of the air curtain to reach the air outlet channel 9, and then is filtered and purified through the air outlet filter screen 10 and the air outlet filter 11, then the nose pad 16 and the flexible head band 19 are fixed, the upper part and the lower part of the device are tightly attached to the human face by the soft elastic body 17 and the elastic cotton 18 which are connected with the device; when a user is in a place with dense personnel, the gear speed can be set to be two, the using principle is consistent with that of the place with fewer personnel, and the difference is that the air curtain jet flow speed is accelerated, the effect of blocking external aerosol from entering a breathing zone is better, or the gear speed is set to be three according to requirements; when the environment in the mouth and the nose of a user is dangerous relative to surrounding people, the gear speed can be set to be two or three, the using principle is consistent with that of a place with fewer people, and the difference is that the air curtain jet flow is increased, and the effect of blocking aerosol in the mouth and the nose from entering the outside is better; the flexible solid sheet 2004 may be selectively used to cover a portion of the air curtain position as desired, and when the external air environment is dangerous, the speed may be set to first, and the flexible solid sheet 2004 may be moved through the sliding slot 2002 to cover a portion or all of the air curtain position.

According to the technical scheme, the invention has the following beneficial effects:

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The wearable micro air curtain system for protecting the mouth and nose comprises a frame column (1) and is characterized in that an air inlet channel (2) is formed in one side of the frame column (1), an air inlet filter screen (3) and an air inlet accelerating pump (4) are connected in the air inlet channel (2), an air inlet filter (5) is arranged between the air inlet filter screen (3) and the air inlet accelerating pump (4), the upper end and the lower end of the frame column (1) are respectively connected with an upper frame (14) and a lower frame (15), an air curtain forming channel (7) is formed in the upper frame (14), an air curtain strip seam (8) is formed in the lower inner wall of the air curtain forming channel (7), an air outlet channel (9) communicated with the air curtain strip seam (8) is formed in the other side of the frame column (1), an air outlet filter screen (10) and an air outlet filter (11) are connected in the air outlet channel (9), a driving battery (12) and a speed regulating switch (13) are connected on the frame column (1), the air inlet accelerating pump (4), the air inlet filter (5), the air outlet filter (11), the speed regulating switch (13) and the driving battery (12) are electrically connected.

2. A wearable oronasal miniature air curtain system according to claim 1 wherein the frame post (1) has a breathing air duct (6) cut therein, the air inlet channel (2), breathing air duct (6), air curtain forming channel (7), air curtain slit (8) and air outlet channel (9) all communicating.

3. A wearable micro air curtain system for protecting mouth and nose according to claim 1, wherein elastic cotton (18) is arranged inside the upper frame (14) and the lower frame (15), and a soft elastomer (17) is connected between the elastic cotton (18) and the upper frame (14) and the lower frame (15).

4. The wearable micro air curtain system for protecting the mouth and nose according to claim 1, wherein a nose pad (16) is connected to the inner side of the upper frame (14), a retractable headband (19) is connected to the frame post (1), and the nose pad (16) and the retractable headband (19) are both made of elastic material.

5. A wearable mouth-nose protection micro air curtain system according to claim 1, wherein the frame post (1) is provided with a closing device (20), the closing device (20) comprises a sliding slot (2002), the sliding slot (2002) is cut in the frame post (1), the inner wall of the sliding slot (2002) is connected with a plurality of first magnets (2001), the sliding slot (2002) is provided with a bendable solid piece (2004), the bendable solid piece (2004) is connected with a second magnet (2003), the second magnet (2003) and the first magnet (2001) have different magnetic poles, and the bendable solid piece (2004) is connected with the first magnet (2001) through the second magnet (2003).

6. A wearable mouth-nose protection miniature air curtain system according to claim 1, wherein a pair of rotating devices (21) are rotatably connected between the frame column (1) and the upper frame (14) and the lower frame (15), and the pair of rotating devices (21) are symmetrically arranged about the central axis of the frame column (1).

7. A wearable mouth-nose protection miniature air curtain system according to claim 6, wherein the rotating device (21) comprises an upper surface sheet (2101) and a lower surface sheet (2105), the upper surface sheet (2101) and the lower surface sheet (2105) are both fixedly connected with the frame post (1), a rotating winding post (2103) is connected between the upper surface sheet (2101) and the lower surface sheet (2105), a fixed post (2104) is rotatably connected to the outer side of the rotating winding post (2103), two rotating sheets (2102) are connected to the outer wall of the fixed post (2104), and the two rotating sheets (2102) are respectively fixedly connected with the upper frame (14) and the lower frame (15).