CN108208974B - A kind of medical convection current mask - Google Patents

A kind of medical convection current mask Download PDF

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Publication number
CN108208974B
CN108208974B CN201810152549.0A CN201810152549A CN108208974B CN 108208974 B CN108208974 B CN 108208974B CN 201810152549 A CN201810152549 A CN 201810152549A CN 108208974 B CN108208974 B CN 108208974B
Authority
CN
China
Prior art keywords
outside
cover
outlet body
note
interior cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201810152549.0A
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Chinese (zh)
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CN108208974A (en
Inventor
王雷
牟小林
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Jilin University
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Jilin University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jilin University filed Critical Jilin University
Priority to CN201810152549.0A priority Critical patent/CN108208974B/en
Publication of CN108208974A publication Critical patent/CN108208974A/en
Application granted granted Critical
Publication of CN108208974B publication Critical patent/CN108208974B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1107Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
    • A41D13/1153Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a hood
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D27/00Details of garments or of their making
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D27/00Details of garments or of their making
    • A41D27/28Means for ventilation
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00Materials specially adapted for outerwear
    • A41D31/02Layered materials
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D2200/00Components of garments
    • A41D2200/10Belts

Abstract

The present invention relates to a kind of medical convection current masks, introduce electrohydraulic pressure control difference drive-type cross-ventilation structure, for mask cover (1), successively design uses tissue layer cover (6), outer outlet body (7) and interior cover (8) three-decker from the outside to the core, by constructing exhaust cavity between outer outlet body (7) and interior cover (8), gas-guide tube (4) based on the mini-fan that is docked and connected (3) inlet end and exhaust cavity, in conjunction with each pumping through-hole (9) on interior cover (8), using draught head principle, the damp-heat air on the inside of inner cover body (8) is quickly taken away;The pressure difference between on the inside of interior cover (8) and on the outside of tissue layer cover (6) is presented with this, and by infusing sets of vias outside each group on outer outlet body (7) and interior cover (8), in conjunction with corresponding outer note snorkel (5), realize the injection on the inside of the inside cover of outside air (8), it is achieved in the displacement of air, provides more comfortable use feeling for user.

Description

A kind of medical convection current mask
Technical field
The present invention relates to a kind of medical convection current masks, belong to intelligent mask technical field.
Background technique
Mask is a kind of amenities, refers generally to be worn over nose and mouth for filtering the air for entering mouth and nose, to reach resistance The apparatus for keeping off harmful gas, smell, droplet disengaging wearer's mouth and nose, is made with gauze or paper etc..Mask is to entrance lung Air has certain filtration, and in respiratory infectious disease prevalence, in the environment of the pollutions such as dust when operation, wear masks tool There is extraordinary effect.Mask can be divided into air filtering type mask and Gas feeding mask, with the development of technical level of science and technology, with And the aggravation of Process of Urban Development pollution, the design of mask is also that constantly to push away layer new out, from most common gauze mask, to science and technology The very high chip type mask of content is all playing respective function and application, but with the application of mask, still there is a ask Topic, is always the problems in mask use process, i.e. hot and humid gas brought by respiratory, can not be replaced in time, because This, the damp-heat air whether assembled around hazing on institute's wearing spectacles or oral cavity, nose all presents uncomfortable Use feeling.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind to be based on existing Respirator structure, introduces the driving of electrohydraulic pressure control difference Formula cross-ventilation structure provides active air convection current and accelerates application, the medical convection current of more comfortable use feeling can be presented Mask.
In order to solve the above-mentioned technical problem the present invention uses following technical scheme: the present invention devises a kind of medical convection current Mask, including mask cover, and be connected to two of mask cover two sides and collect band;It further include mini-fan, control Snorkel is infused outside switch, power supply, two gas-guide tubes and at least one;Power supply is connected by control switch with mini-fan, into Row power supply;Two collect take be respectively further from connection mask cover end abut each other, control switch and power supply are set to receipts On band, mini-fan, which is fixedly connected, is set to two positions that abut each other for collecting band, and the working air current side of mini-fan To backwards to cephalad direction;Wherein one end of two gas-guide tubes is mutually butted, and two gas-guide tubes abut each other end and mini-fan Air-flow enter end face and be connected to each other, realize that two gas-guide tubes abut each other end and mini-fan air-flow enters the three of end face and connects It is logical;Mask cover successively includes tissue layer cover, outer outlet body and interior cover, wherein from the outside to the core, tissue layer cover, outer outlet body and Shape, the size of interior cover three is mutually the same;The edge of outer outlet body is corresponding with the edge of interior cover to be mutually tightly connected, outer outlet body Exhaust cavity is constituted between interior cover, outer outlet body and interior cover abut each other the position that edge respectively corresponds mask cover two sides It sets, is connected respectively with the other end of two gas-guide tubes, and the port of two gas-guide tubes is respectively communicated with outer outlet body and interior cover Between exhaust cavity;At least one pumping through-hole for running through its two sides is set on interior cover;It is arranged on outer outlet body and interior cover At least one set is outer to infuse sets of vias, wherein note sets of vias respectively includes being arranged infusing outside the first of outer outlet body two sides and lead to outside each group Through-hole is infused in hole, and setting outside the second of interior cover two sides, infuse outside each group outside first in sets of vias note lead to the hole site with The position of note through-hole corresponds to each other outside second;The group number of outer note sets of vias is equal with the outer note radical of snorkel, and outer note is logical The internal diameter of Kong Zuzhong through-hole and outer pipe outside diameter of supplying gas of infusing are adapted, and sets of vias is infused outside each group and infuses snorkel one by one with outside each respectively Corresponding, note snorkel infuses the both ends of snorkel outside each in the exhaust cavity between outer outlet body and interior cover, and outside each It docks respectively and infuses the note through-hole outside of through-hole, second outside first infused in sets of vias outside corresponding to, is connected in note sets of vias outside realization each group Exhaust cavity is isolated between region and outer outlet body, interior cover;Tissue layer cover covers the outside for being set to outer outlet body.
As a preferred technical solution of the present invention: the mini-fan is Miniature brushless motor fan.
As a preferred technical solution of the present invention: the power supply is button cell.
A kind of medical convection current mask of the present invention compared with the prior art by using the above technical solution, has following skill Art effect:
(1) the medical convection current mask that the present invention designs is based on existing Respirator structure, and it is empty to introduce electrohydraulic pressure control difference drive-type Gas convective structure, for mask cover, successively design uses tissue layer cover, outer outlet body and interior cover three-layered node from the outside to the core Structure, by constructing exhaust cavity between outer outlet body and interior cover, based on leading for be docked and connected mini-fan inlet end and exhaust cavity Tracheae quickly takes away the damp-heat air of side in inner cover body using draught head principle in conjunction with each pumping through-hole on interior cover; The pressure difference in inner cover body between side and tissue layer cover outside is presented with this, and passes through outside each group on outer outlet body and interior cover Sets of vias is infused, in conjunction with the corresponding outer injection infused snorkel, realize on the inside of the inside cover of outside air, is achieved in setting for air It changes, provides more comfortable use feeling for user;
(2) in the medical convection current mask that the present invention designs, for mini-fan, further design uses miniature brushless electricity Machine fan both ensure that institute so that medical convection mouth cover designed by the present invention in actual use, can be realized mute work It designs medical convection current mask and is capable of providing comfortable wearing impression, and can guarantee that its course of work does not cause shadow to ambient enviroment It rings, embodies the human oriented design in design process;
(3) in the medical convection current mask that the present invention designs, for power supply, further design uses button cell, sufficiently The advantages of using button cell small size, substantially reduces the whole of designed electrohydraulic pressure control difference drive-type cross-ventilation structure and occupies Thus space maintains designed medical convection current mask and the consistent surface structure of existing mask to greatest extent, has both efficiently While air-flow displacement provides comfort, outstanding portability is maintained.
Detailed description of the invention
Fig. 1 is the structure schematic side view of medical convection current mask designed by the present invention;
Fig. 2 is the structural schematic diagram of mask cover in medical convection current mask designed by the present invention.
Wherein, 1. mask cover, 2. collect band, and 3. mini-fans, 4. gas-guide tubes, 5. infuse snorkel outside, and 6. is thin Yarn layer cover, 7. outer outlet bodies, cover in 8., 9. pumping through-holes infuse through-hole outside 10. first, infuse through-hole outside 11. second.
Specific embodiment
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawings of the specification.
As shown in Figure 1, the present invention devises a kind of medical convection current mask, including mask cover 1, and it is connected to Two of 1 two sides of mask cover collect band 2;It further include mini-fan 3, control switch, power supply, two gas-guide tubes 4 and at least one Snorkel 5 is infused outside root;Power supply is connected by control switch with mini-fan 3, is powered;Two collect on band 2 it is remote respectively End from connection mask cover 1 abuts each other, and control switch and power supply are set to and collect on band 2, and mini-fan 3 is fixedly connected Two positions that abut each other for collecting band 2 are set to, and the working air current direction of mini-fan 3 is backwards to cephalad direction;Two are led Wherein one end of tracheae 4 is mutually butted, and two gas-guide tubes 4 abut each other end with the air-flow of mini-fan 3 to enter end face opposite It connects, realizes that two gas-guide tubes 4 abut each other end and be connected to the three that 3 air-flow of mini-fan enters end face;As shown in Fig. 2, mask Cover 1 successively includes tissue layer cover 6, outer outlet body 7 and interior cover 8, wherein, tissue layer cover 6,7 and of outer outlet body from the outside to the core Shape, the size of interior 8 three of cover is mutually the same;The edge of outer outlet body 7 is corresponding with the edge of interior cover 8 to be mutually tightly connected, outside Exhaust cavity is constituted between cover 7 and interior cover 8, outer outlet body 7 and interior cover 8 abut each other edge and respectively correspond mask cover 1 The position of two sides is connected with the other end of two gas-guide tubes 4 respectively, and the port of two gas-guide tubes 4 is respectively communicated with outer cover Exhaust cavity between body 7 and interior cover 8;At least one pumping through-hole 9 for running through its two sides is set on interior cover 8;Outer outlet body 7 Sets of vias is infused with being arranged outside at least one set on interior cover 8, wherein is infused sets of vias outside each group and is respectively included being arranged and runs through outer outlet body 7 Through-hole 10 is infused outside the first of two sides, and through-hole 11 is infused in setting outside the second of interior 8 two sides of cover, is infused in sets of vias outside each group First outside note 10 position of through-hole with second outside infuse through-hole 11 position correspond to each other;The group number of outer note sets of vias is sent with outer note The radical of tracheae 5 is equal, and the internal diameter of through-hole and outer 5 outer diameter of note snorkel are adapted in outer note sets of vias, and through-hole is infused outside each group Group infuses the one-to-one correspondence of snorkel 5 with outside each respectively, exhaust of the note snorkel 5 between outer outlet body 7 and interior cover 8 outside each In cavity, and the both ends of note snorkel 5 are docked outside corresponding outer first infused in sets of vias respectively outside note through-hole 10, second outside each Through-hole 11 is infused, realizes and infuses in sets of vias that exhaust cavity is isolated between connected region and outer outlet body 7, interior cover 8 outside each group;Tulle Layer cover 6 covers the outside for being set to outer outlet body 7.The medical convection current mask of above-mentioned technical proposal design, is based on existing mask Structure introduces electrohydraulic pressure control difference drive-type cross-ventilation structure, and for mask cover 1, successively design uses tulle from the outside to the core Layer cover 6,8 three-decker of outer outlet body 7 and interior cover, by constructing exhaust cavity between outer outlet body 7 and interior cover 8, based on docking The gas-guide tube 4 of connection 3 inlet end of mini-fan and exhaust cavity utilizes air pressure in conjunction with each pumping through-hole 9 on interior cover 8 Poor principle quickly takes away the damp-heat air of 8 inside of inner cover body;It is presented between interior 8 inside of cover and 6 outside of tissue layer cover with this Pressure difference, and by infusing sets of vias outside each group on outer outlet body 7 and interior cover 8, in conjunction with it is corresponding it is outer infuse snorkel 5, realize outer The injection of inside 8 inside of cover of portion's air, is achieved in the displacement of air, provides more comfortable use feeling for user.
On the medical convection current mask technical solution basis of above-mentioned design, the present invention also further devises following excellent Selecting technology scheme: it is directed to mini-fan 3, further design uses Miniature brushless motor fan, so that medical treatment designed by the present invention In actual use with convection mouth cover, it can be realized mute work, both ensure that designed medical convection current mask is capable of providing It is comfortable to wear impression, and can guarantee that its course of work does not impact ambient enviroment, embody the human nature in design process Change design;The advantages of for power supply, further design uses button cell, makes full use of button cell small size, substantially reduces The whole occupied space of designed electrohydraulic pressure control difference drive-type cross-ventilation structure, thus maintains designed medical treatment to greatest extent It is maintained excellent while Efficient air flow displacement offer comfort is provided with convection current mask and existing mask consistent surface structure Elegant portability.
The medical convection mouth cover that the present invention designs in the actual application process, specifically includes mask cover 1, Yi Jifen Two for not being connected to 1 two sides of mask cover collect band 2;Further include Miniature brushless motor fan, control switch, button cell, Snorkel 5 is infused outside two gas-guide tubes 4 and at least one;Button cell is connected by control switch with Miniature brushless motor fan It connects, is powered;Two collect be respectively further from band 2 connection mask cover 1 end abut each other, control switch and button electricity Pond, which is set to, to be collected on band 2, and Miniature brushless motor fan, which is fixedly connected, is set to two positions that abut each other for collecting band 2, and The working air current direction of Miniature brushless motor fan is backwards to cephalad direction;Wherein one end of two gas-guide tubes 4 is mutually butted, and two The air-flow that root gas-guide tube 4 abuts each other end and Miniature brushless motor fan enters end face and is connected to each other, and realizes two gas-guide tubes 4 each other Butt end is connected to the three that Miniature brushless motor fan airstream enters end face;Mask cover 1 successively includes tulle from the outside to the core Layer cover 6, outer outlet body 7 and interior cover 8, wherein, the shape of 8 three of tissue layer cover 6, outer outlet body 7 and interior cover, size are each other It is identical;The edge of outer outlet body 7 is corresponding with the edge of interior cover 8 to be mutually tightly connected, and exhaust is constituted between outer outlet body 7 and interior cover 8 Cavity, outer outlet body 7 and interior cover 8 abut each other the position that edge respectively corresponds 1 two sides of mask cover, respectively with two gas-guide tubes 4 other end is connected, and the port of two gas-guide tubes 4 is respectively communicated with the exhaust cavity between outer outlet body 7 and interior cover 8; At least one pumping through-hole 9 for running through its two sides is set on interior cover 8;At least one set of outer note of setting on outer outlet body 7 and interior cover 8 Sets of vias, wherein note sets of vias respectively includes setting and infuses through-hole 10, Yi Jishe outside the first of 7 two sides of outer outlet body outside each group It sets and infuses through-hole 11 outside the second of interior 8 two sides of cover, note 10 position of through-hole and second outside first in sets of vias is infused outside each group The position of outer note through-hole 11 corresponds to each other;The group number of outer note sets of vias is equal with the outer note radical of snorkel 5, and infuses through-hole outside The internal diameter of through-hole is adapted with outer 5 outer diameter of note snorkel in group, and sets of vias is infused outside each group and infuses snorkel 5 one by one with outside each respectively Corresponding, note snorkel 5 is in the exhaust cavity between outer outlet body 7 and interior cover 8 outside each, and note snorkel 5 outside each Both ends are docked respectively infuses through-hole 11 outside note through-hole 10, second outside corresponding outer first infused in sets of vias, infuses through-hole outside realization each group Exhaust cavity is isolated between connected region and outer outlet body 7, interior cover 8 in group;The covering of tissue layer cover 6 is set to outer outlet body 7 Outside.In practical application, designed medical convection current mask in user's wearing, and pass through control switch, control connection Power supply of the button cell to Miniature brushless motor fan, so that Miniature brushless motor fan work, due to Miniature brushless motor wind The working air current direction of fan backwards to cephalad direction, two gas-guide tubes 4 abut each other the air-flow of end and Miniature brushless motor fan into Enter end face to be connected to each other, the port of two gas-guide tubes 4 is respectively communicated with the exhaust cavity between outer outlet body 7 and interior cover 8, then based on micro- The airflow direction of type brushless motor fan work, the air between outer outlet body 7 and interior cover 8 in exhaust cavity is by rapidly through air guide Pipe 4 carries out outlet, since the air in exhaust cavity is by quick outlet, then in exhaust cavity on the inside of interior cover 8 between shape At draught head, under the action of draught head, the damp-heat air of 8 inside of interior cover can through each pumping through-hole 9 on interior cover 8, It is flowed into exhaust cavity rapidly, and under the airflow function of Miniature brushless motor fan work, further by gas-guide tube 4 Discharge outward;The damp-heat air of 8 inside of cover constantly carries out outlet in so, then interior 8 inside of cover and 6 outside of tissue layer cover Between also will form draught head, so under the action of draught head, the air in the outside of tissue layer cover 6 passes through tissue layer cover first Body 6, then by infusing sets of vias outside each group on outer outlet body 7 and interior cover 8, in conjunction with note sets of vias outside each respectively docking each group Outer note snorkel 5 realizes the injection of inside 8 inside of cover of outside air, since the both ends of note snorkel 5 outside each are docked respectively Through-hole 11 is infused outside note through-hole 10, second outside corresponding outer first infused in sets of vias, then through the outer outside air infusing snorkel 5 and injecting It is mutually independent, is independent of each other with the outer air-discharging in exhaust cavity, it is thus achieved that air displacement application, so that designed Medical convection mouth cover provides more comfortable use feeling in practical applications, for user.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention It makes a variety of changes.

Claims (3)

1. a kind of medical convection current mask, including mask cover (1), and it is connected to two of mask cover (1) two sides Collect band (2);It is characterized by also including mini-fan (3), control switch, power supply, two gas-guide tubes (4) and at least ones Outer note snorkel (5);Power supply is connected by control switch with mini-fan (3), is powered;Two collect on (2) points End not far from connection mask cover (1) abuts each other, and control switch and power supply are set to and collect on band (2), mini-fan (3) it is fixedly connected to be set to two and collect band (2) and abuts each other position, and the working air current direction of mini-fan (3) is backwards Cephalad direction;Wherein one end of two gas-guide tubes (4) is mutually butted, and two gas-guide tubes (4) abut each other end and mini-fan (3) air-flow enters end face and is connected to each other, and realizes that two gas-guide tubes (4) abut each other end and mini-fan (3) air-flow enters end face Three connection;Mask cover (1) successively include from the outside to the core tissue layer cover (6), outer outlet body (7) and interior cover (8), its In, shape, the size of tissue layer cover (6), outer outlet body (7) and interior cover (8) three are mutually the same;The edge of outer outlet body (7) It is corresponding with the edge of interior cover (8) to be mutually tightly connected, exhaust cavity, outer outlet body are constituted between outer outlet body (7) and interior cover (8) (7) abut each other the position that edge respectively corresponds mask cover (1) two sides with interior cover (8), respectively with two gas-guide tubes (4) The other end is connected, and the port of two gas-guide tubes (4) is respectively communicated with the exhaust cavity between outer outlet body (7) and interior cover (8); At least one pumping through-hole (9) for running through its two sides is set on interior cover (8);It is arranged at least on outer outlet body (7) and interior cover (8) Sets of vias is infused outside one group, wherein note sets of vias respectively includes setting and infuses through-hole outside the first of outer outlet body (7) two sides outside each group (10), and setting runs through note through-hole (11) outside the second of interior cover (8) two sides, and first in sets of vias is infused outside each group and is infused outside and is led to The position of note through-hole (11) corresponds to each other outside hole (10) position and second;The group number of outer note sets of vias and outer note snorkel (5) Radical it is equal, and the internal diameter of through-hole and outer note snorkel (5) outer diameter are adapted in outer note sets of vias, note through-hole component outside each group Snorkel (5) one-to-one correspondence is not infused with outside each, note snorkel (5) is located between outer outlet body (7) and interior cover (8) outside each Note through-hole outside corresponding outer first infused in sets of vias is docked respectively in the both ends that snorkel (5) are infused in exhaust cavity, and outside each (10), second through-hole (11) are infused outside, realizes that infuse connected region and outer outlet body (7), interior cover in sets of vias outside each group arranges between (8) The isolation of gas cavity;Tissue layer cover (6) covers the outside for being set to outer outlet body (7).
2. a kind of medical convection current mask according to claim 1, it is characterised in that: the mini-fan (3) is miniature nothing Brush motor fan.
3. a kind of medical convection current mask according to claim 1, it is characterised in that: the power supply is button cell.
CN201810152549.0A 2018-02-16 2018-02-16 A kind of medical convection current mask Expired - Fee Related CN108208974B (en)

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CN201810152549.0A CN108208974B (en) 2018-02-16 2018-02-16 A kind of medical convection current mask

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Application Number Priority Date Filing Date Title
CN201810152549.0A CN108208974B (en) 2018-02-16 2018-02-16 A kind of medical convection current mask

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CN108208974A CN108208974A (en) 2018-06-29
CN108208974B true CN108208974B (en) 2019-08-20

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111387595A (en) * 2020-03-27 2020-07-10 吉林弗朗医疗科技有限公司 Disposable medical mask and preparation method thereof

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CN202445175U (en) * 2012-01-10 2012-09-26 罗建平 Novel dustproof mask
CN204380018U (en) * 2014-12-30 2015-06-10 德赛奥智能科技(北京)有限公司 A kind of electronic gauze mask of the plastic seal with air extraction structure and treatment facilities
CN105380316A (en) * 2015-11-01 2016-03-09 谢俊堂 Mask capable of supplementing fresh air and removing hot moisture exhaled by human body
CN106621099A (en) * 2016-12-15 2017-05-10 李大国 Gas filtering and exchanging device with dual-chamber structure
CN206688046U (en) * 2017-04-08 2017-12-01 唐伟 A kind of new mobile air-purifying mask

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US20030154983A1 (en) * 2002-02-15 2003-08-21 Marx Alvin J. Personal air filtering device

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
CN202445175U (en) * 2012-01-10 2012-09-26 罗建平 Novel dustproof mask
CN204380018U (en) * 2014-12-30 2015-06-10 德赛奥智能科技(北京)有限公司 A kind of electronic gauze mask of the plastic seal with air extraction structure and treatment facilities
CN105380316A (en) * 2015-11-01 2016-03-09 谢俊堂 Mask capable of supplementing fresh air and removing hot moisture exhaled by human body
CN106621099A (en) * 2016-12-15 2017-05-10 李大国 Gas filtering and exchanging device with dual-chamber structure
CN206688046U (en) * 2017-04-08 2017-12-01 唐伟 A kind of new mobile air-purifying mask

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Inventor after: Wang Lei

Inventor after: Mou Xiaolin

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Effective date of registration: 20190724

Address after: 130012 Changchun Qianjin Street, Jilin, No. 2699

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Address before: 610000 No. 15 Jinhe Street, Qingyang District, Chengdu City, Sichuan Province

Applicant before: Mou Xiaolin

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Granted publication date: 20190820

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