CN104771847A - Ear-carrying type air filtering respirator - Google Patents

Ear-carrying type air filtering respirator Download PDF

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Publication number
CN104771847A
CN104771847A CN201510220475.6A CN201510220475A CN104771847A CN 104771847 A CN104771847 A CN 104771847A CN 201510220475 A CN201510220475 A CN 201510220475A CN 104771847 A CN104771847 A CN 104771847A
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China
Prior art keywords
hook
skewer
ear
hole
small air
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Pending
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CN201510220475.6A
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Chinese (zh)
Inventor
刘惠琴
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Individual
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Individual
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Priority to CN201510220475.6A priority Critical patent/CN104771847A/en
Publication of CN104771847A publication Critical patent/CN104771847A/en
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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00Respiratory apparatus
    • A62B7/10Respiratory apparatus with filter elements
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00Filters for breathing-protection purposes
    • A62B23/02Filters for breathing-protection purposes for respirators

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Pulmonology (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

The invention relates to an ear-carrying type air filtering respirator which surrounds the head in the mode of fitting the nostrils and sulcus auriculae posteriors and can stretch out to fit the size and shape of the head so that the head can move freely. The ear-carrying type air filtering respirator is characterized in that a front respiration part and a rear air filtering part are obviously separated, two rear sections are elastic, and a front section is provided with a ventilation hose of an ear frame to connect the front part and the rear part into an annular device; the respiration part is nose plugs or nose covers closely fitting the nostrils; the air filtering part is a small air filter arranged at the back of the head or the rear nape and is special for the ear-carrying type air filtering respirator. When the small air filter is turned on, air outside a machine body will be sucked from a reserved hole cover, is filtered when passing through a filtering layer, then is brought to an air outlet, enters an air receiving space, comes to the nostrils along the designed ventilation hose and finally is easily inhaled by a user. The user has no resistance or stuffy feeling, speaking and eating are not affected, and the user can inhale unique fresh air anytime anywhere.

Description

Frame ear formula wind filter respirator
Technical field
The invention of this reality relates to a kind of fresh air respirator, especially paste nostril, subsides basal part of the ear ground frame gets on around head at ear, nose; And is scalable removes applicable different size head dummy, and head can movable light and handy endless means freely, you just directly can breathe at any time, everywhere, with oneself fresh air that oneself filters, that belong to your only henry to put on it.
Technical background
At present, a series of products such as more well-known air cleaners, filtration pm2.5 mouth mask, various filter dirt mouth mask and box respirator are all wish that side can be drawn onto fresh air to people.
But, use in the room that air cleaner can only be placed on closedown.Although filter pm2.5 mouth mask, various dust respirator and box respirator, they all can be worn with oneself, and because needs mouth and nose cover together, when speaking, voice can unclearly be analysed, eat, all will remove down when drinking water, larger shortcoming is exactly air-breathing effort, has resistance, particularly more baked sense of Xian Men in summer.
Summary of the invention
In order to overcome the deficiency of these breath freshening air products existing, frame ear formula wind filter respirator provided by the invention, it is one and is adjacent to nostril, frame on the basal part of the ear and around the light and handy endless means of the scalable head dummy that goes to be applicable to vary in size of Tou Bu And, it can directly deliver to the fresh air filtered in your nostril everywhere with oneself, at any time, resistance is not had during air-breathing, because need not mouth be covered, speak and do not had obstruct, eat, drink water also very convenient.
The technical scheme that Ben Faming separates its technical problem institute of Decision Mining is: backwind filter part is obviously separated with previous breath part, resilient with two back segments between them, leading portion skewer has filled ear mount sunlight steam hose and has made loop connecting, the fresh air filtered is transported to above nostril to the space And that gives a dinner for a visitor from afar along the ring-shaped ventilation flexible pipe that the sixth of the twelve Earthly Branches connects from the air outlet Come of small air filter, and people can be sucked easily.
The invention has the beneficial effects as follows: its energy Long-Time Service, only needs Geng Change filter course, filter paper after a while, environmental protection.But filter course, filter paper also oneself are selected, arbitrarily.Rechargeable battery, can use USB skewer head to charge, durable.Making structure is simple, and materials are cheap, and applicable broad masses generally make to spend the environment dealing with current air severe contamination, in the urgent need to.Loop type arrangement is scalable, can be applicable to different size head dummy, and the activity of head energy freely, convenient.Nasal tubes is up-small and down-big hollow volcano shape, can be applicable to the nostril varied in size.Be not suitable for nasal obstruction also can select use nose cup.Frame ear formula is worn easily.Fuselage more has various placement modes optional.
Accompanying drawing explanation
Fig. 1. frame ear formula wind hangs over rear nape place (collar is outer) machine body Hook after filtering the special small air filter connection nasal obstruction of respirator and wears shape side view in fact.
Fig. 2. after the small air filter connection nose cup that frame ear formula wind filter respirator is special, fuselage is placed with and wears shape side view in fact at hindbrain place.
Fig. 3. be Fig. 1. real device of wearing unloads rear reversion and keeps flat 45 degree of front views.(show a tip circle hole and connect own disengaged position.Have an X-rayed connection status in another tip circle hole).
Fig. 4. be Fig. 2. real device of wearing unloads rear front and keeps flat 45 degree of front views.(show a mother rib lateral rotundum and connect own Off from state.Connection status in perspective opposite side circular hole)
Fig. 5. small air filter 45 degree of sides that frame ear formula wind filter respirator is special, side lid is looked in opening, and end face lid is looked in opening and filter house exploded view.
Fig. 6. during without collar, neck hanging type wear 45 degree on rear side of body schematic diagram.
Fig. 7 .X Xing Hook top Er Hook Hook lives collar, and following Liang Hook Hook lives powerful elastic cord schematic diagram.
Fig. 8. hindbrain pillow 45 degree of side views.
Fig. 9. powerful elastic cord astragal is buckled and is unclamped rear state diagram.
Figure 10. two limits of bonding jumper ear mount are fallen Hook, ear frame Hook and are formed state diagram.
Figure 11. the topped filter paper in rectangle gas outlet, And starts wherein one jiao of horizontal spacer web front appearance enlarged drawing of display part.
Figure 12. hope the rectangle gas outlet enlarged drawing of topped filter paper in the sixth of the twelve Earthly Branches after nasal obstruction or nose cup remove nasal tubes or cover nostril in front.
Figure 13. hope the rectangle gas outlet enlarged drawing not having topped filter paper in front after nasal obstruction or nose cup remove nasal tubes or cover nostril.
In figure: 1-small air filter, 2-gives a dinner for a visitor from afar space, 3-steam hose, 4-has a stuffy nose, 5-nose cup, 6-nasal tubes, 7-covers nostril, 8-fan blade, 9-air outlet, 10-card article, 11-tip circle hole, 12-mother rib lateral rotundum, 13-boxes out cover, 14-filter course, at the bottom of 15-mesh every, 16-rectangle gas outlet, the horizontal spacer web of 17-, 18-switch, 19-X Xing Hook, 20-Er Jia Hook, 21-bonding jumper ear mount, 22-Dao Hook, 23-wears skewer hole, 24-hindbrain is rested the head on, 25-connecting hole, the powerful elastic cord of 26-, 27-vee, the screens of 28-roundlet, 29-battery, 30-filter paper, 31-Er Jia Hook gum cover, 32-sealing of hole sticker, 33-side is covered, 34-end face lid, 35-VELCRO, 36-bracelet, 37-collar, 38-filter house, 39-USB skewer mouth.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
According to Fig. 1. special small air filter (1) Hook of frame ear formula wind filter respirator hangs over the outer And of rear nape place collar (37) and selects to connect nasal obstruction (4) when doing supporting, will first by the bottom and upper segment of filter paper (30) respectively skewer enter first and most Hou mono-Ma space , Shop of the horizontal spacer web (17) of nasal obstruction (4) flat after reach the effect of the topped whole rectangle gas outlet (16) of filter paper (30), again by two nonelastic one end of steam hose (3) separately skewer enter nasal obstruction (4) the right and left connecting hole (25), but one end of bonding jumper is worn after skewer hole (23) skewer enters from one side steam hose (3), advance to nonelastic one end, outwards passed to the skewer hole (23) of wearing of another side steam hose (3) by nasal obstruction (4) Come that connected, Liang Ma wears skewer hole (23) mouth and exposes the identical bonding jumper needing length, expose two bonding jumpers are respectively bent once in skewer hole (23) the mouth limit Come back bending of wearing of self by And, formation Zuo You Liang Ma is identical needs length, the identical gradient that needs to turn forward fall Hook (22), Shi Zheng Ma bonding jumper is blocked can not slide by Liang Bian Dao Hook (22).The bonding jumper of reserved identical applicable length after Hook (22) is fallen on two limits, by its slightly curved formation ear frame Hook (20) once, then overlap upper ear rack Hook gum cover (31), bonding jumper ear mount (21) installs into regard to skewer.Two vees (27) each autoregistration small air filter (1) two tip circle hole (11) internal fixtion card article (10) skewer filled on the flexible tail end mouth of two steam hoses (3) of bonding jumper ear mount (21) are straight fashionable to skewer, card article (10) enters roundlet screens (28) and is stuck fixing, just constitutes endless means.From the beginning endless means is gone up cover go down, nasal obstruction (4) upper two nasal tubes (6) are aimed at two nostril skewers to be entered fixing, both sides oneself connect steam hose (3) along both sides cheek Come to basal part of the ear place, left and right, Er Ma Er Jia Hook (20) is hung on the basal part of the ear of left and right separately, elasticity steam hose (3) after the basal part of the ear along collare to downward-extension, small air filter (1) is placed with rear nape place collar (37) outward, the top two Hook Hook having lived in the X shape Hook (19) of the powerful elastic cord (26) in fuselage both sides with following two Hook Hook lives rear nape collar (37) place and fixes.
Finish above-mentioned action, successful small air filter (1) Hook is hung over rear nape place collar (37) outward, And selects and nasal obstruction (4) is made supporting frame ear formula wind filter respirator and worn complete, defines Fig. 1. seen reality wears shape.
According to Fig. 2. the special small air filter (1) of frame ear formula wind filter respirator is placed with also can be selected to connect nose cup (5) at hindbrain place And and do supporting.Also will first by the bottom and upper segment of filter paper (30) respectively skewer enter first and most Hou mono-Ma space of the horizontal spacer web (17) of nose cup (5), the effect of the topped whole rectangle gas outlet (16) of filter paper (30) is reached after Shop is flat, again by two nonelastic one end of steam hose (3) separately skewer enter the right and left connecting hole (25) of nose cup (5), then one end of bonding jumper is worn after skewer hole (23) skewer enters from one side steam hose (3), advance to nonelastic one end, outwards passed to the skewer hole (23) of wearing of another side steam hose (3) by nose cup (5) Come that connected, wear skewer hole (23) mouth for two and expose the identical bonding jumper needing length, And respectively bends exposing Liang Ma bonding jumper once in skewer hole (23) the mouth limit Come back bending of wearing of self, formation Liang Ma is identical needs length, the Hook (22) that falls of the identical gradient that needs to turn forward makes whole Ma bonding jumper be fallen Hook by two limits to block and can not slide.The bonding jumper of reserved identical applicable length after Hook (22) is fallen on two limits, by its slightly curved formation ear frame Hook (20) once, then overlap upper ear rack Hook gum cover (31), bonding jumper ear mount (21) installs into regard to skewer.It is fashionable that the two Ma triangular cuts (27) filled by own skewer on the flexible tail end mouth of two steam hoses (3) of bonding jumper ear mount (21) aim at small air filter (1) two mother rib lateral rotundum (12) internal fixtion card article (10) horizontal skewer, card article (10) enters roundlet screens (28) and is stuck fixing, just constitutes endless means.From the beginning endless means is gone up cover go down, cover nostril (7) is aimed at nose cover go down, the steam hose (3) that both sides have connected along both sides cheek Come to basal part of the ear place, left and right, Er Ma Er Jia Hook (20) is hung on the basal part of the ear of left and right separately, scalable steam hose (3) after the basal part of the ear gets on along to hindbrain, machine being carried on the back the small air filter (1) having pasted hindbrain pillow (24) the sixth of the twelve Earthly Branches is placed with at hindbrain place, by through cover of boxing out (13) up and down both sides, powerful elastic cord (26) circle formed in fuselage both sides, Hook lives same while wear on the Hook (22) of skewer hole (23) mouth forward separately, Zheng Ma fuselage is stayed in hindbrain place by grandmother's bundle.
Finish above-mentioned action, successful being placed with by small air filter (1) to be selected and nose cup (5) is made supporting frame ear formula wind and filtered respirator and wear complete at hindbrain place And, defines Fig. 2. and seen reality wears shape.
According to Fig. 5. be filter house (38) before the small air filter (1) that frame ear formula wind filter respirator is special, filter house (38) forms every (15) by the bottom of cover of boxing out (13), filter course (14), mesh, and what be close to below is fan blade (8).Fuselage bottom is equipped with rechargeable battery (29), USB skewer mouth (39), as long as press switch (18), fan blade (8) starts to rotate, air outside small air filter (1) fuselage can be inhaled at cover of boxing out (13) place, just fresh air is become afterwards through filter course (14), be brought to air outlet (9) entered space of giving a dinner for a visitor from afar (2) along with fresh air is moved in fan blade (8) not stall, two circular holes are respectively had in the both sides top side end of space of giving a dinner for a visitor from afar (2), a fixing strip (10) is had with in two circular holes of one side, each one of both sides, have two card articles (10).Article two, steam hose (3) flexible one end skewer enter circular hole fixing after just connect into endless means, the fresh air that oneself filters along ring-type steam hose (3) road Come to previous breath portion, just can be sucked by people easily.
Ju is according to Fig. 6. when small air filter (1) can be hung without collar (37), the bracelet (36) of powerful elastic cord (26) following for cover of boxing out (13) can be unclamped, retain the state that top has worn the powerful elastic cord (26) of skewer, powerful elastic cord (26) Xing Cheng mono-Ma intermediate hanging the strip of small air filter (1), after being aimed at by small air filter (1), nape place is placed with, the powerful elastic cord (26) of strip is fastened after neck one encloses again, with regard to neck hanging type in one-tenth figure.
The above is only the preferred embodiment of the present invention; it should be pointed out that and those skilled in the art Come said, at not Off under the prerequisite of the technology of the present invention principle; can also make some improvement and modification, these improve and modify and also should be considered as within protection scope of the present invention.

Claims (10)

1. a frame ear formula wind filter respirator, is characterized in that: a Ma frame is on ear, and paste nostril, paste basal part of the ear ground around head, And is scalable removes applicable different size head dummy, and the movable light and handy endless means freely of head energy; Mainly contain Liang Ma part be before and after obviously separately, only back segment is resilient, leading portion is nonelastic but loop connecting front and rear part done by the steam hose (3) that skewer has filled bonding jumper ear mount (21) with two; Be respiratory region above, that need be close to nostril has two sections to let people to select one: 1. have a stuffy nose (4), 2. nose cup (5); Be wind filter portion below, it to select the frame ear formula wind being placed on hindbrain or rear nape place to filter the special small air filter (1) of respirator.
2. according to the optional first item in claim 1. previous breath portion nasal obstruction (4), feature is: mono-Ma length is the five-way hollow pipe that two ose breadths, overall diameter size just can cover nostril, made by flexible glue; Shang Mian And row has two to lead to, and be two and just can enter the nasal tubes (6) in two nostrils by skewer, it is up-small and down-big hollow volcano shape, and it can go to the nostril being applicable to varying in size from shallow to deep; There is Tong Shi Ma rectangle gas outlet (16) below, it is at nasal tubes (6) right opposite, its length is equal to ose breadth, width is 1/2nd of the overall diameter of hollow pipe left and right connecting hole (25), its centre has young line lateral separation to be arranged in horizontal spacer web (17), allow the both sides up and down of filter paper (30) respectively from the first space of horizontal spacer web (17) and last space Qian Ru Shop flat after, reach the effect of filter paper (30) topped Zheng Ma rectangle gas outlet (16); Left and right two is logical is in addition connecting hole (25), and connecting hole (25) interior diameter can just enter steam hose (3) nonelastic one end from rear section extend through Come by skewer.
3. according to the optional second item in claim 1. previous breath portion nose cup (5), feature is made by flexible glue, can cover the four-way hollow pipe of Zheng Ma nose; Above one logical be cover nostril (7) according to nose configuration design, cover Zheng Ma nose with Come, limit, aperture inwall is stained with sponge cushion with applicable difformity nose; Below one logical be rectangle gas outlet (16), at cover nostril (7) right opposite, its length is equal to ose breadth, width is 1/2nd of the overall diameter of hollow pipe left and right connecting hole (25), its centre has young line lateral separation to be arranged in horizontal spacer web (17), the both sides up and down facilitating filter paper (30) from after Qian Ru Shop first space and last space of horizontal spacer web (17) is flat, reach the effect of filter paper (30) topped Zheng Ma rectangle gas outlet (16) respectively; Left and right two is logical is in addition connecting hole (25), and connecting hole (25) interior diameter can just enter steam hose (3) nonelastic one end from rear section extend through Come by skewer.
4. according to the telescopic endless means of claim 1., feature is the second half section connecting front and rear part two steam hoses (3) of device is circlewise flexible, there is telescopic effect, but tail end is a bit of is convenience when skewer hole connects, nonelastic shape need be kept, and the vee (27) of end mouth of pipe limit You Liang Ma symmetry, vee (27) top is roundlet screens (28), and both are connected, the size of roundlet screens (28) can just be held card article (10) and stop, form small air filter (1) and be connected to each other state with steam hose (3), card article (10) enters roundlet screens (28) and easily enters difficulty and go out, to slightly exert oneself to pull out separation.
5. according to the device of a claim 1. energy frame on ear, its feature is: one can be attached on nostril by frame deviously, the bonding jumper ear mount (21) that Liang Hook can tangle the not easily Sheng Rust of two ears is extended on both sides, its most of interlude is that skewer enters in nonelastic section of steam hose (3) and nasal obstruction (4) or nose cup (5), namely be the first half being hidden in Zheng Ma endless means, two of bonding jumper is worn after skewer hole (23) outwards passes respectively at left and right steam hose (3), the length of the identical needs of each self-forming in skewer hole (23) mouth limit is worn at two, the identical angle Dao Hook (22) that turns forward, length and the angle turned forward of two Ge Dao Hook (22), can prevent (21) slip of bonding jumper ear mount He Neng Hook live powerful elastic cord (26) be as the criterion, slightly curved one-tenth ear mount hook (20) once of a bit of bonding jumper that the Hook (22) that falls is also remaining afterwards, And overlaps upper ear rack Hook gum cover (31).
6. be the special small air filter (1) of frame ear formula wind filter respirator according to claim 1. aft section, its special feature is: the fuselage size except cuboid will be applicable to being affixed on hindbrain place, fuselage back is stained with VELCRO (35), fuselage bottom is equipped with rechargeable battery (29), switch (18), fan blade (8) is equipped with outward in USB skewer mouth (39) and middle part, also need be provided with filter course (14) between fan blade (8) and cover of boxing out (13), more need to add a space of giving a dinner for a visitor from afar (2) at air outlet (9) place, fuselage upper end, respectively leave Liang Ma circular hole (totally 4 Ma circular holes) to do and be connected skewer in top and the both sides of space of giving a dinner for a visitor from afar (2) and enter use, circular hole size is can just enter steam hose (3) and be as the criterion by skewer, at the card article (10) having this two circular hole to share with the same distance place in tip circle hole, one side (11) and mother rib lateral rotundum (12), respectively there is a card article (10) inside, limit, top side, left and right, have two card articles (10), steam hose (3) flexible one end is from the straight skewer in same tip circle hole (11) on one side or enter all can align same card article (10) from mother rib lateral rotundum (12) horizontal skewer and be stuck, and pull at and just they can be separated, when selecting straight skewer two tip circle hole (11) to connect, two mother rib lateral rotundums (12) need seal with sealing of hole sticker (32), when selecting horizontal skewer two mother rib lateral rotundum (12) to connect, two tip circle holes (11) just need seal with sealing of hole sticker (32).
7., when small air filter (1) can be selected to place hindbrain according to claim 1., need hindbrain pillow (24) and powerful elastic cord (26) to do attached helping; Hindbrain pillow (24) need have VELCRO (35) to be attached to after small air filter (1) fuselage, it is characterized in that: hindbrain pillow (24) that small air filter (1) body made of sponge is special, its one side is the camber design of foundation hindbrain arc, another side is flat face, the VELCRO (35) of bonding fuselage is posted in flat face both sides, the width of hindbrain pillow (24) is the same with the width of small air filter (1), and height is 2/3rds of small air filter (1).
8. according to claim 1. and claim 7. when selecting small air filter (1) to be placed with hindbrain, resting the head on except wanting hindbrain does except attached helping, powerful elastic cord (26) is also needed to make attached rib, it is characterized in that: there is bracelet (36) at a two, And can through after the upper hole on side-wall of cover of boxing out (13) and lower hole on side-wall, people's circle can be formed after being fastened by bracelet (36) in the middle of lower hole on side-wall, the length that the powerful elastic cord (26) stayed in cover of boxing out (13) both sides encloses is identical, and can just respectively live with the Hook (22) on one side bonding jumper ear mount (21) from Hook, play fixing small air filter (1) be close to hindbrain and do not fall down easily.
9. small air filter (1) also can be selected to be placed on rear nape place according to claim 1., when having collar (37) to hang, can use and hang neck formula, hanging neck formula need have a special Gua Hook to go to connect powerful elastic cord (26) and collar (37), it is characterized in that: the X-shaped plastic cement products having Si Hook, the each comfortable left and right two limits Hook that upwards curved formation in the wrong two Ma is upwards curved of Hook point of following two Hook, the powerful elastic cord (26) in special Come Hook both sides, the Hook that about each leisure of Hook point of top two Hook, two downward curved formation two Ma in the wrong in limit are curved downwards, Qie Zheng Ma Hook body is flat, be applicable to Zhuan Hook and live collar (37).
10., according to claim 1. nape place after selection is placed on small air filter (1), when No collar (37) can be hung, neck hanging type can be used; As long as the bracelet (36) of the powerful elastic cord (26) under opening cover of boxing out (13) in the middle of hole on side-wall, pull-out has penetrated the powerful elastic cord (26) of lower hole on side-wall part, in reservation, hole on side-wall is through the state of powerful elastic cord (26), make the powerful elastic cord (26) of whole piece become a centre to wear and hang the strip of small air filter (1), again small air is filtered (1) to be placed with facing to rear nape place, powerful elastic cord (26) is enclosed around neck one forward and buckles again, just become a neck hanging type.
CN201510220475.6A 2015-04-30 2015-04-30 Ear-carrying type air filtering respirator Pending CN104771847A (en)

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN105816971A (en) * 2016-05-13 2016-08-03 秦小坤 Personal air purification system
CN105816972A (en) * 2016-05-13 2016-08-03 秦小坤 Wearable air purifier
CN105833441A (en) * 2016-06-13 2016-08-10 北京随能科技有限公司 Neck-hanging type air purification system
CN106719049A (en) * 2017-02-24 2017-05-31 苏州高精特专信息科技有限公司 Dog haze-proof mask
WO2022073463A1 (en) * 2020-10-08 2022-04-14 中创富国(北京)科技发展研究院有限公司 Simple and aesthetically-pleasing respiratory system protective cover

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GB1212821A (en) * 1966-10-21 1970-11-18 Simms Group Res Dev Ltd Improvements in or relating to respirator devices
US5312324A (en) * 1992-09-15 1994-05-17 Walthour Charles D Nasal dressing system
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CN103394174A (en) * 2013-08-28 2013-11-20 吴利明 Portable breathing air filter
CN104436460A (en) * 2014-11-24 2015-03-25 吕行 Wearable air purifying device and air purifying method
CN205095586U (en) * 2015-10-09 2016-03-23 江苏正通宏泰股份有限公司 Ultra -clean dust collector for desulfurizing tower

Cited By (6)

* Cited by examiner, † Cited by third party
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CN105816971A (en) * 2016-05-13 2016-08-03 秦小坤 Personal air purification system
CN105816972A (en) * 2016-05-13 2016-08-03 秦小坤 Wearable air purifier
CN105833441A (en) * 2016-06-13 2016-08-10 北京随能科技有限公司 Neck-hanging type air purification system
CN106719049A (en) * 2017-02-24 2017-05-31 苏州高精特专信息科技有限公司 Dog haze-proof mask
CN106719049B (en) * 2017-02-24 2022-05-17 刘志军 Haze-proof mask for dogs
WO2022073463A1 (en) * 2020-10-08 2022-04-14 中创富国(北京)科技发展研究院有限公司 Simple and aesthetically-pleasing respiratory system protective cover

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Application publication date: 20150715