CN105816972A - Wearable air purifier - Google Patents
Wearable air purifier Download PDFInfo
- Publication number
- CN105816972A CN105816972A CN201610323354.9A CN201610323354A CN105816972A CN 105816972 A CN105816972 A CN 105816972A CN 201610323354 A CN201610323354 A CN 201610323354A CN 105816972 A CN105816972 A CN 105816972A
- Authority
- CN
- China
- Prior art keywords
- air
- wearable
- face shield
- filter element
- air purifier
- 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.)
- Pending
Links
- 238000004891 communication Methods 0.000 claims description 3
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 10
- 206010003497 Asphyxia Diseases 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 2
- 210000002345 respiratory system Anatomy 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 206010035653 pneumoconiosis Diseases 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/10—Respiratory apparatus with filter elements
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/084—Means for fastening gas-masks to heads or helmets
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/10—Valves
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Pulmonology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to a wearable air purifier. The wearable air purifier comprises a mask matched with the face of an operator. The mask is provided with an air inlet connected with an air outlet of a first filtering unit. The mask is further provided with an air outlet connected with an air inlet of a second filtering unit. An air inlet of the first filtering unit and an air outlet of the second filtering unit communicate with the outside. The first filtering unit and the second filtering unit are fixed to a wearable waistcoat. An induced draft fan is arranged at the air outlet of the first filtering unit. An air outlet of the induced draft fan points to the air inlet of the mask. The operator only needs to wear the waistcoat to fix the whole air purifier, so that the wearing mode is simple. The induced draft fan introduces air of the first filtering unit into the mask and then introduces the air into the second filtering unit through the air outlet of the mask, so that airflow in the mask forms a local open-type system, and the problem that the working efficiency of the induced draft fan is reduced due to the fact that local pressure of the mask is too high is avoided. Accordingly, the phenomenon of suffocation of wearers is avoided, and the wearing comfort degree of the mask is increased.
Description
Technical field
The present invention relates to technical field of air purification, particularly to a kind of wearable air purifier.
Background technology
Under the working environment of underground coal mine, stone pit, cement plant, building and metallurgical contour dust; the respiratory system of operating personnel can be produced huge injury; if the operating personnel under above-mentioned working environment is not effectively protected measure; the lung tissue Diffuse fibrous pathological changes of operating personnel can be caused to form pneumoconiosis after deposition is too much in dust alveolar in the respiratory system of operating personnel, serious also can causing death.For the problems referred to above, the above-mentioned operating personnel in working environment is generally fitted provided with anti-dust respirator, and common filter-type respirator is not suitable for the work condition environment of high dust, more problem is still existed for Gas feeding mask, such as because the safety of battery and blower fan just cannot use in underground coal mine contour dust place, Gas feeding mask or individual wearable air purifier are substantially the waist that air cleaning part is arranged on operating personnel, not only wearing comfort is the highest, but also normal work can be hindered, if the power of fan chosen is relatively low, operating personnel there will be confession QI-insufficiency and produces sense of feeling suffocated, wearing comfort seriously reduces, if the power of fan such as chosen is higher, the noise of blower fan is the biggest, also the comfortableness worn can be affected.
Summary of the invention
It is an object of the invention to provide a kind of wearable air purifier, while convenient working personnel wear, improve the comfortableness that air purifier is worn.
The present invention solves technical problem and adopts the following technical scheme that wearable air purifier, including the face shield coordinated with operating personnel's face, the gas outlet being provided with air inlet and the first filter element on described face shield connects, the air inlet being additionally provided with air outlet and the second filter element on face shield connects, the air inlet of the first filter element and the gas outlet of the second filter element are in communication with the outside, described first, second filter element is each attached on wearable waistcoat, the gas outlet of the first filter element is provided with air-introduced machine, the air outlet of described air-introduced machine points to the air inlet of face shield.
The present invention there is also techniques below feature:
Being provided with breather valve on described face shield, described breather valve is that check valve and conducting direction are pointed to the external world by face shield.
Described first, second filter element is fixed on the back of wearable waistcoat..
The gas outlet of described first filter element connects with the pipe end of the first flexible pipe, the other end of the first flexible pipe connects with the air inlet of face shield, the air inlet of the second filter element and the pipe end connection of the second flexible pipe, the other end of the second flexible pipe connects with the air outlet of face shield, and the first flexible pipe and the second flexible pipe are bent upwards extension by the back of wearable waistcoat respectively and connect with air inlet and the air outlet of face shield respectively.
Being provided with opening on described face shield, described breather valve includes that lid door, described lid door are made up of plastic material or elastomeric material, and lid door closure is located on this opening, and the upper end of lid door is connected by elastic rubber column with face shield.
It is provided with box body on described wearable waistcoat back, described box body is divided into two accommodating chamber by dividing plate, two accommodating chamber are respectively used to accommodate first, second filter element, and said two accommodating chamber is respectively arranged with first, second induced duct and coordinates with the pipe end composition grafting of first, second flexible pipe respectively.
The cover port of described box body is provided with lid, described lid is offered multiple air-vent, is positioned in the outer plate surface of lid and is covered with initial filter net, the outside of first filter screen is provided with protection board.
Described box body is arranged in the vallecular cavity on wearable waistcoat back, it is provided with opening in the cassette bottom of box body to connect with vallecular cavity, described vallecular cavity inner route clapboard is divided into two chambers, described first, second induced duct respectively with two chamber of vallecular cavity, the opening part being positioned at box body is provided with filter.
Described first, second filter element is respectively arranged on first, second filter element in box body two chamber.
The both sides of face shield are provided with fixing band, and the end of described fixing band eye-splice and dead bolt, eye-splice and dead bolt respectively constitute grafting secure fit.
Compared with the prior art, beneficial effects of the present invention is embodied in: operating personnel has only to wear wearable dress ornament, face shield is located on the face, whole air purifier can be fixed up, wearing mode is simple, air after cleaning is introduced in the air inlet of face shield by air-introduced machine by the first filter element, the most again from face shield in air outlet introduces the second filter element, so that the air-flow in face shield forms local open type system, thus avoid the local face shield local pressure caused due to operating personnel's breathing excessive, make the problem that air-introduced machine work efficiency is substantially reduced, and then avoid the phenomenon felt suffocated to occur, thus improve the comfort level that face shield is worn.
Accompanying drawing explanation
Fig. 1 is the structural representation of wearable air purifier；
Fig. 2 is the left view that wearable air purifier is in use state；
Fig. 3 is the structural representation of breather valve；
Fig. 4 is the structural representation of wearable waistcoat.
Detailed description of the invention
Referring to figs. 1 through Fig. 4, to the architectural feature of the present invention, details are as follows:
Wearable air purifier, including the face shield 10 coordinated with operating personnel's face, the gas outlet being provided with air inlet and the first filter element on described face shield 10 connects, the air inlet being additionally provided with air outlet and the second filter element on face shield 10 connects, the air inlet of the first filter element and the gas outlet of the second filter element are in communication with the outside, described first, second filter element is each attached on wearable waistcoat 20, the gas outlet of the first filter element is provided with air-introduced machine 30, and the air outlet of described air-introduced machine 30 points to the air inlet of face shield 10.
nullOperating personnel has only to wear wearable dress ornament 20，Face shield 10 is located on the face，Whole air purifier can be fixed up，Wearing mode is simple，Air after cleaning is introduced in the air inlet of face shield 10 by air-introduced machine 30 by the first filter element，The most again from face shield 10 in air outlet introduces the second filter element，So that the air-flow in the face shield of whole air purifier forms local open type system，Due to the local malleation produced when operating personnel breathes，The work efficiency that can make air-introduced machine 30 is substantially reduced，Even quit work，Therefore the deficiency of air of air inlet can be made，Make operating personnel that the sense of feeling suffocated of short time occur，And then the comfortableness that impact is worn，The two ends of the most above-mentioned face shield 10 connect with filter element respectively，The air outlet of face shield 10 can eliminate the local malleation in face shield 10 moment，So that it is guaranteed that air-introduced machine 30 is in the state of normal work all the time，Guarantee to supply to face shield 10，Slow down the sense of discomfort that operating personnel produces owing to feeling suffocated，Improve the comfortableness that the face shield 10 of air cleaning facility is worn.
As the preferred version of the present invention, for improving the comfortableness that operating personnel wears further, described face shield 10 being provided with breather valve 40, described breather valve 40 is pointed to the external world for check valve and conducting direction by face shield 10.Utilize the one-way conduction effect of breather valve 40, the pressure in face shield 10 can be discharged further, so that face shield 10 is in natural atmospheric pressure state all the time, it is ensured that air-introduced machine 30 is located in working order all the time, and then guarantee the comfort level that operating personnel wears.Breather valve 40 at this simply plays the effect of auxiliary exhaust, and maintains atmospheric pressure state mainly to rely on the effect being opened to air port on face shield 10.
For convenience of the wearing of operating personnel, described first, second filter element is fixed on the back of wearable waistcoat 20.
The filter element of above-mentioned depurator is fixing for convenience, improve the comfort level that operating personnel wears, the gas outlet of described first filter element connects with the pipe end of the first flexible pipe 51, the other end of the first flexible pipe 51 connects with the air inlet of face shield 10, the air inlet of the second filter element and the pipe end connection of the second flexible pipe 52, the other end of the second flexible pipe 52 connects with the air outlet of face shield 10, and the first flexible pipe 51 is bent upwards extension by the back of wearable waistcoat 20 respectively with the second flexible pipe 52 and connects with air inlet and the air outlet of face shield 10 respectively.Filter element is directly anchored on the back of wearable waistcoat 20, convenient working personnel bear, comfort level is higher, being introduced or extraction face shield 10 by air-flow by the first flexible pipe 51 and the second flexible pipe 52, the first flexible pipe 51 and the second flexible pipe 52 can be walked around shoulder and avoid flexible pipe to hinder the normal operation of operating personnel by wearing personnel.
Being provided with opening 11 on described face shield 10, described breather valve 40 includes that lid door 41, described lid door 41 are made up of plastic material or elastomeric material, and lid door 41 lid is located on this opening 11, and the upper end of lid door 41 is connected by elastic rubber column 42 with face shield 10.The breather valve 40 of said structure is similar to single open-door structure, when being under normal-pressure situations in face shield 10, at lid door 41 in off position, extraneous air cannot be introduced into face shield 10, when the pressure in face shield 10 is in malleation, lid door 41 is opened, thus carries out pressure release.
Specifically, it is provided with box body 60 on described wearable waistcoat 20 back, described box body 60 is divided into two accommodating chamber by dividing plate 61, two accommodating chamber are respectively used to accommodate first, second filter element, and said two accommodating chamber is respectively arranged with first, second induced duct 601,602 and coordinates with the pipe end composition grafting of first, second flexible pipe 51,52 respectively.
For guaranteeing filter effect, the cover port of described box body 60 is provided with lid 62, described lid 62 is offered multiple air-vent 621, is positioned in the outer plate surface of lid 62 and is covered with initial filter net 63, the outside of first filter screen 63 is provided with protection board 64.Just filter screen 63 realizes the first filtration to dust, and filter element realizes the secondary filter to air, further ensures that flow quality, protection board 64 play the protective effect to filter element.
For directing air flow out further or introducing, described box body 60 is arranged in the vallecular cavity 70 on wearable waistcoat 20 back, it is provided with opening 603 in the cassette bottom of box body 60 to connect with vallecular cavity, described vallecular cavity 70 inner route clapboard is divided into two chambers, described first, second induced duct 601,602 respectively with two chamber of vallecular cavity 70, air-introduced machine 30 is positioned at the opening 603 of box body 60.
Described first, second filter element is respectively arranged on first, second filter element 81,82 in 60 liang of chambers of box body.First, second filter element 81,82 can be selected for the Multifunctional filter element sold on market.
For convenience of being fixed on head by face shield 10, the both sides of face shield 10 are provided with fixing band 12, and the end of described fixing band 12 eye-splice and dead bolt, eye-splice and dead bolt respectively constitute grafting secure fit.
Control panel 21 can be set on wearable waistcoat 20, the rotating speed to air-introduced machine 30 can be realized and control.
Also can arrange display module on wearable waistcoat 20, display module is used for showing electricity, efficiency of dust collection and external dust degree information.
Above-mentioned Wearable waistcoat 20 is arranged as apparatus carriers, distributed power source, it is to avoid weight is concentrated and caused equipment uncertain movement in the course of the work.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in the present invention.Should not be considered as limiting involved claim by any reference in claim.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.
Claims (10)
- The most wearable air purifier, including the face shield (10) coordinated with operating personnel's face, it is characterized in that: the gas outlet being provided with air inlet and the first filter element on described face shield (10) connects, the air inlet being additionally provided with air outlet and the second filter element on face shield (10) connects, the air inlet of the first filter element and the gas outlet of the second filter element are in communication with the outside, described first, second filter element is each attached on wearable waistcoat (20), the gas outlet of the first filter element is provided with air-introduced machine (30), the air outlet of described air-introduced machine (30) points to the air inlet of face shield (10).
- Wearable air purifier the most according to claim 1, it is characterized in that: be provided with breather valve (40) on described face shield (10), described breather valve (40) is that check valve and conducting direction are pointed to the external world by face shield (10).
- Wearable air purifier the most according to claim 1 and 2, it is characterised in that: described first, second filter element is fixed on the back of wearable waistcoat (20).
- Wearable air purifier the most according to claim 3, it is characterized in that: the gas outlet of described first filter element connects with the pipe end of the first flexible pipe (51), the other end of the first flexible pipe (51) connects with the air inlet of face shield (10), the air inlet of the second filter element and the pipe end connection of the second flexible pipe (52), the other end of the second flexible pipe (52) connects with the air outlet of face shield (10), first flexible pipe (51) is bent upwards extension by the back of wearable waistcoat (20) respectively with the second flexible pipe (52) and connects with air inlet and the air outlet of face shield (10) respectively.
- Wearable air purifier the most according to claim 2, it is characterized in that: on described face shield (10), be provided with opening (11), described breather valve (40) includes lid door (41), described lid door (41) is made up of plastic material or elastomeric material, lid door (41) lid is located on this opening (11), and the upper end of lid door (41) is connected by elastic rubber column (42) with face shield (10).
- Wearable air purifier the most according to claim 4, it is characterized in that: on described wearable waistcoat (20) back, be provided with box body (60), described box body (60) is divided into two accommodating chamber by dividing plate (61), two accommodating chamber are respectively used to accommodate first, second filter element, and said two accommodating chamber is respectively arranged with first, second induced duct (601,602) and coordinates with the pipe end composition grafting of first, second flexible pipe (51,52) respectively.
- Wearable air purifier the most according to claim 6; it is characterized in that: the cover port of described box body (60) is provided with lid (62); multiple air-vent (621) is offered on described lid (62); it is positioned in the outer plate surface of lid (62) and is covered with initial filter net (63), the outside of first filter screen (63) is provided with protection board (64).
- 8. according to the wearable air purifier described in claim 6 or 7, it is characterized in that: described box body (60) is arranged on the vallecular cavity (70) on wearable waistcoat (20) back Nei, it is provided with opening (603) in the cassette bottom of box body (60) to connect with vallecular cavity, described vallecular cavity (70) inner route clapboard is divided into two chambers, described first, second induced duct (601,602) respectively with two chamber of vallecular cavity (70), air-introduced machine (30) is positioned at opening (603) place of box body (60).
- Wearable air purifier the most according to claim 6, it is characterised in that: described first, second filter element is respectively arranged on first, second filter element (81,82) in box body (60) two chamber.
- Wearable air purifier the most according to claim 1 and 2, it is characterized in that: the both sides of face shield (10) are provided with fixing band (12), the end of described fixing band (12) eye-splice and dead bolt, eye-splice and dead bolt respectively constitute grafting secure fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610323354.9A CN105816972A (en) | 2016-05-13 | 2016-05-13 | Wearable air purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610323354.9A CN105816972A (en) | 2016-05-13 | 2016-05-13 | Wearable air purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105816972A true CN105816972A (en) | 2016-08-03 |
Family
ID=56529710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610323354.9A Pending CN105816972A (en) | 2016-05-13 | 2016-05-13 | Wearable air purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105816972A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018052874A1 (en) * | 2016-09-16 | 2018-03-22 | 3M Innovative Properties Company | Exhalation valve and respirator including same |
| US20210187333A1 (en) * | 2019-12-20 | 2021-06-24 | Optrel Holding AG | Blower device for a respiratory protection system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH556664A (en) * | 1972-10-19 | 1974-12-13 | Mathys Robert | Face-masks for use in operating-theatres - is partly transparent, ventilated by battery driven fan and coupled to filter unit |
| DE4344353A1 (en) * | 1993-12-25 | 1995-06-29 | Weiss Umwelttechnik Gmbh | Supply unit for personal protective suit |
| CN2669636Y (en) * | 2003-06-13 | 2005-01-12 | 温学强 | Composite medical protective clothing |
| CN102781520A (en) * | 2009-07-17 | 2012-11-14 | 帕夫泰克技术私人有限公司 | respirator |
| CN202980203U (en) * | 2012-11-11 | 2013-06-12 | 北京金色啄木鸟科技开发有限责任公司 | Protective suit with air-disinfecting function |
| CN203989554U (en) * | 2014-05-28 | 2014-12-10 | 张毅林 | A kind of mouth mask breather valve |
| CN204261216U (en) * | 2014-07-17 | 2015-04-15 | 艾尔康居（北京）科技有限公司 | A kind of backpack individual air cleaning system |
| CN104771847A (en) * | 2015-04-30 | 2015-07-15 | 刘惠琴 | Ear-carrying type air filtering respirator |
| CN105455240A (en) * | 2015-12-15 | 2016-04-06 | 重庆市中定科技有限公司 | Operation protective garment with back-load type filter |
| CN205586379U (en) * | 2016-05-13 | 2016-09-21 | 秦小坤 | Wearable air purifier |
-
2016
- 2016-05-13 CN CN201610323354.9A patent/CN105816972A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH556664A (en) * | 1972-10-19 | 1974-12-13 | Mathys Robert | Face-masks for use in operating-theatres - is partly transparent, ventilated by battery driven fan and coupled to filter unit |
| DE4344353A1 (en) * | 1993-12-25 | 1995-06-29 | Weiss Umwelttechnik Gmbh | Supply unit for personal protective suit |
| CN2669636Y (en) * | 2003-06-13 | 2005-01-12 | 温学强 | Composite medical protective clothing |
| CN102781520A (en) * | 2009-07-17 | 2012-11-14 | 帕夫泰克技术私人有限公司 | respirator |
| CN202980203U (en) * | 2012-11-11 | 2013-06-12 | 北京金色啄木鸟科技开发有限责任公司 | Protective suit with air-disinfecting function |
| CN203989554U (en) * | 2014-05-28 | 2014-12-10 | 张毅林 | A kind of mouth mask breather valve |
| CN204261216U (en) * | 2014-07-17 | 2015-04-15 | 艾尔康居（北京）科技有限公司 | A kind of backpack individual air cleaning system |
| CN104771847A (en) * | 2015-04-30 | 2015-07-15 | 刘惠琴 | Ear-carrying type air filtering respirator |
| CN105455240A (en) * | 2015-12-15 | 2016-04-06 | 重庆市中定科技有限公司 | Operation protective garment with back-load type filter |
| CN205586379U (en) * | 2016-05-13 | 2016-09-21 | 秦小坤 | Wearable air purifier |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018052874A1 (en) * | 2016-09-16 | 2018-03-22 | 3M Innovative Properties Company | Exhalation valve and respirator including same |
| US12070634B2 (en) | 2016-09-16 | 2024-08-27 | 3M Innovative Properties Company | Exhalation valve and respirator including same |
| US20210187333A1 (en) * | 2019-12-20 | 2021-06-24 | Optrel Holding AG | Blower device for a respiratory protection system |
| US12017097B2 (en) * | 2019-12-20 | 2024-06-25 | Optrel Holding AG | Blower device for a respiratory protection system |
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Application publication date: 20160803 |