CN207384623U - It is hand-held to wear dual-purpose respirator with air purifying function - Google Patents
It is hand-held to wear dual-purpose respirator with air purifying function Download PDFInfo
- Publication number
- CN207384623U CN207384623U CN201720498259.2U CN201720498259U CN207384623U CN 207384623 U CN207384623 U CN 207384623U CN 201720498259 U CN201720498259 U CN 201720498259U CN 207384623 U CN207384623 U CN 207384623U
- Authority
- CN
- China
- Prior art keywords
- air
- respirator
- purifying function
- blowing unit
- air purifying
- 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.)
- Active
Links
Abstract
The utility model is related to the hand-held dual-purpose respirator with air purifying function of wearing of one kind, which has:Body, including defining the mask of respiratory region and positioned at mask lower part and the accommodating chamber that is connected with respiratory region;Hand held air purification breathing module, is removably disposed in the accommodating chamber;Air purification breathing module includes the blowing unit and air cleaning member that seal and be fixedly connected between each other;Blowing unit is used to blow to respiratory region, and air cleaning member is used to provide pure air to blowing unit.The respirator with air purifying function of the utility model can be used as mask to wear and use, and air purification therein breathing module can be taken out and individually hold and use.
Description
Technical field
The utility model is related to a kind of portable respirator with air purifying function.
Background technology
Under conditions of the air qualities such as such as haze or sand and dust are not good enough, as current most common protection method, people
It is movable outdoors when (such as during walking) often wear as traditional mask made by gauze or paper, but this mask exists
It influences breathing and cannot or be difficult to the deficiency for effectively stopping small particles of pollution object.As an improvement it also proposes in the prior art
Traditional mask substituted using the wearable breathing equipment with air-cleaning function, wherein wearable breathing equipment can be straight
In the clothes or accessory that meet with wearing or being worn over or be integrated into user.
This wearable breathing equipment generally use wind turbine is to actively air-supply at user's mouth and nose, for example, Chinese patent literature
CN 103919304B disclose a kind of active air-purifying respirator, including cover body;The lower part of cover body is equipped with wind pushing cavity, in wind pushing cavity
DC fan equipped with air-supply, the medial surface of wind pushing cavity are equipped with air inlet, filter material layer are equipped with along the wind pushing cavity of air inlet;Cover body
Top form the respirator that is adapted with mouth and nose, equipped with gas distribution channel between wind pushing cavity and respirator.Wherein, cover body includes outer
Cover and inner cover, inner cover are arranged in outer cover to form wind pushing cavity;Gas distribution channel is symmetricly set on the both sides of cover body and extends supreme
In the nasal side side in nostril with respect to position.
It is disclosed in above patent document the shortcomings that mask:Gas distribution channel is symmetricly set on the both sides of cover body and extends to
Higher than the nasal side side position relatively in nostril, the air-flow in gas distribution channel is injected directly into respirator, causes air inlet disorderly, local gas
Flow excessive velocities so that the comfort of nose and face is poor, while easily sweeps across external foul atmosphere, causes breathing air
It is unholiness.
To solve the above-mentioned problems, the earlier patent application CN106422104A of the applicant discloses a kind of wearable exhale
Inhale device, especially a kind of wearable breathing equipment with mask form, including control module, body, wind turbine and air
Clean unit;Wherein, body includes defining the mask of respiratory region, positioned at mask lower part and the accommodating chamber that is connected with respiratory region,
Wind turbine and air cleaning member are arranged in accommodating chamber;The connectivity part of respiratory region and accommodating chamber is provided with air current equalizer, the sky
Gas current equalizer includes the stomata of multiple air-flows for being used to be dispersed into respiratory region.
In the wearable breathing equipment, air current equalizer is located at the axial side of wind turbine, since centrifugal blower is tangential
Outlet air, therefore air-flow cannot swimmingly enter via air current equalizer in respiratory region so that fan efficiency is limited, and according to axis
If flow fan, due to needing to overcome filtration resistance, pressure head cannot meet, if wanting to meet its pressure head, axial flow blower volume
It is excessive, so as to reduce product comfort to a certain extent..
In addition, above-mentioned wearable breathing equipment there are occupation mode it is single the defects of, be merely able to wear as mask
It uses, but due to being wherein integrated with more parts, weight is substantially more much greater than common mask, wears for a long time
There may be senses of discomfort.
The content of the invention
In view of the deficiencies of the prior art, the main purpose of the utility model is to provide one kind and can be achieved at the same time hand-held use
The respirator with air purifying function used with wearing.
In order to realize above-mentioned main purpose, the utility model provides a kind of dual-purpose air purification breathing dress of hand-held wearing
It puts, has:
Body, including defining the mask of respiratory region and positioned at mask lower part and the accommodating chamber that is connected with respiratory region;
Hand held air purification breathing module, is removably disposed in accommodating chamber;Wherein, air purification breathing module bag
Include the blowing unit and air cleaning member for sealing and being fixedly connected between each other;Blowing unit is used to blow to respiratory region, empty
Gas clean unit is used to provide pure air to blowing unit;
Control module is arranged in blowing unit.
In the utility model, air cleaning member can include having the net of different purification functions for different pollutants
Change unit, such as including being used to filter the filter layer of the contaminant particles such as dust in air, bacterium, sulfide and/or for inhaling
Receive the adsorption layer of the toxic gases such as formaldehyde, mist of oil.In general, these filter layer substances and adsorption layer material demand are accommodated/are carried on
In rigid car-tridge.
It is net by the way that blowing unit and air cleaning member are integrated into an independent hand held air in the utility model
Change breathing module and be detachably mounted to body, and control module is arranged in blowing unit so that the sky of the utility model
Gas purification breathing equipment can not only wear use, but also can be not intended to wear the occasion of breathing equipment in user, by air
Purification breathing module is removed from body to be used as the air cleaning unit of hand-held, to obtain pure air.In addition, by
It is short usually than body that the service life of breathing module is purified in hand held air, therefore hand held air is purified into breathing module
It is independently arranged with body, only hand-held air purification breathing module can be replaced and reuses body, it is effectively save
Resource.Further, it is contemplated that the difference in different wearer's face features, the size of body usually require variation, and empty
Gas purification breathing module then can be general, and air purification is breathed module and body is independently arranged and was both selected as needed convenient for user
With appropriate body, production and operation cost can also be reduced.
It should be readily apparent to one skilled in the art that air cleaning member is generally limited by detergent power and has certain replacement
Frequency.In addition, required air cleaning member may and differ under varying environment;For example, it is main in haze environment
What is considered is removal graininess nuisance therein, and in the plant produced workshop with pernicious gas primary concern is that
Remove pernicious gas therein, requirement of two kinds of environment to air cleaning member simultaneously differs.Therefore, as the utility model
A kind of preferred embodiment is removably secured connection, in order to air purification between blowing unit and air cleaning member
Unit is replaced.
Preferably, air cleaning member is arranged on the axial side of blowing unit, in order to realize air purification breathing dress
Put the miniaturization with air purification breathing module.
As another preferred embodiment of the utility model, it is formed with and leads between air purification breathing module and accommodating chamber
To mechanism and detent mechanism;The guiding mechanism is used in disassembly process be oriented to air purification breathing module, the positioning
Mechanism is used to implement positioning of the air purification breathing module in accommodating chamber, consequently facilitating the dismounting of air purification breathing module and
Positioning.
A kind of specific embodiment according to the present utility model, the bottom of respiratory region set flexible chin strap plate, mask
Edge sets flexible bound edge, to improve comfort when user wears and be bonded effect with face.
Preferably, chin supporting plate and bound edge are formed as one, to simplify its structure and preparation.
Preferably, the chin sticking part protruded towards respiratory region is formed on chin supporting plate, further to improve body with wearing
Fitting effect between wearer's chin position.
As a kind of specific embodiment of the utility model, blowing unit is included with assembling chamber and plenum chamber
Water conservancy diversion wind is formed between the annular peripheral wall of volute of blower and the centrifugal blower being arranged in installation cavity, centrifugal blower and installation cavity
Road, the diversion air duct are configured to the radial dimension in inlet air flow path and gradually increase;Plenum chamber is upper in inlet air flow path
In the downstream side of diversion air duct, and with for the leading to the air pushing hole guiding positioned at volute of blower axial side by pure air
Inclined-plane is flowed, so that pure air enters respiratory region via air pushing hole.
In above-mentioned technical proposal, plenum chamber is formed positioned at the downstream side of diversion air duct in inlet air flow path, to reduce
Kinetic pressure losses simultaneously obtain uniform static pressure outlet air;Meanwhile plenum chamber have for by pure air to axial positioned at volute of blower
The water conservancy diversion inclined-plane of the air pushing hole guiding of side, so as to effectively change airflow direction.The air of the utility model is net as a result,
Good breathing comfort can be provided under conditions of centrifugal blower pressure head and efficiency is not influenced by changing breathing equipment.
It should be noted that in the utility model, inlet air flow path be from respirator with air purifying function on the whole from
And obtain, it is not intended that scrambling of the local space air flow on microcosmic.In addition, in the utility model, volute of blower
Axial is exactly the axial direction of centrifugal blower, and the radial direction of diversion air duct is exactly the radial direction of centrifugal blower.
More specifically, the fragrance box being connected in volute of blower and with diversion air duct and/or plenum chamber.And fragrance box is preferred
It is arranged to be connected with the water conservancy diversion inclined-plane of plenum chamber, so that champignon taste is easier to evaporate into respiratory region with air-flow.
When extraneous air cold, respiratory discomfort can be generated.To solve the problems, such as this, in the utility model, blowing unit is also
It can include the electrical heating elements heated to pure air.As a kind of specific embodiment, the electrical heating elements
It can be electric heating film.
As the further embodiment of the utility model, battery is also set up in blowing unit, in order to be hand-held
Air-purifying module is powered.
In the utility model, respirator with air purifying function can also include being arranged on respiratory region to detect wearer's breathing shape
The respiration transducer of state, the control module of respirator with air purifying function is according to the detection signal of respiration transducer to centrifugal blower
Break-make and rotating speed are controlled.
It is well known that centrifugal blower is generally blown using lasting, but human body respiration rhythm is to exhale a suction, in people's air-breathing
Centrifugal blower is needed to be sent into relatively large number of purification air to respiratory region, the purification air capacity needed when exhaling is relatively seldom.
In addition, it is also different that human body needs the air capacity breathed under different activities.In above-mentioned technical proposal, breathing sensing
Device can detect the breathing state (such as respiratory rate and amplitude of respiration) of wearer, and control module is according to detection signal intelligent tune
The break-make and/or rotating speed of centrifugal blower are saved, air-supply air quantity to be adjusted, allows human body that can breathe the air of optimal dose, together
When reach the energy-saving effect of wind turbine.
It is below in conjunction with the accompanying drawings and specific real in order to more clearly illustrate the purpose of this utility model, technical solution and advantage
Applying mode, the utility model is described in further detail.
Description of the drawings
Fig. 1 is the stereogram of the utility model respirator with air purifying function preferred embodiment;
Fig. 2 is another stereogram of the utility model respirator with air purifying function preferred embodiment;
Fig. 3 is the STRUCTURE DECOMPOSITION of air purification breathing module in the utility model respirator with air purifying function preferred embodiment
Figure;
Fig. 4 is another structure of air purification breathing module in the utility model respirator with air purifying function preferred embodiment
Exploded view.
Specific embodiment
As shown in Figure 1, the respirator with air purifying function as one preferred embodiment of the utility model is configured to mask shape
Formula breathes module including the air purification of body 1 and hand-held.Wherein, under body 1 includes superposed mask 11 and is located at
The drawer type accommodating chamber 12 in portion;Mask 11 defines respiratory region 13, and mask 11 and wearer's face fit during wearing so that connect
Receiving the respiratory regions 13 of mouth and nose forms relatively closed space, be not easy by outer gas stream interference and influence.To ensure 11 He of mask
The fitting effect and comfort level of wearer's face are provided with silica gel material in the edge that mask 11 is contacted with wearer's face
Elastic bound edge 14, bound edge 14 have the extension 141 extended towards 11 surface of mask.Meanwhile the bottom of respiratory region 13 is provided with silicon
The elastic chin supporting plate 15 of glue material matter, chin supporting plate 15 are formed as one with bound edge 14.In order to improve chin supporting plate 15 with wearing
The fitting effect of person's face is formed with the chin sticking part 151 protruded towards respiratory region 13, bound edge 14 and chin on chin supporting plate 15
Sticking part 151 generally forms the profile to fit with wearer's face.In this preferred embodiment, respiratory region 13 and accommodating chamber 12
Between separated by chin supporting plate 15.It is readily appreciated that, in the other embodiment of the utility model, accommodating chamber 12 can be by only
It is limited by a rigid frame.
With continued reference to Fig. 1, air purification breathing module includes blowing unit 2 and for providing clean sky to blowing unit 2
The air cleaning member 3 of gas, air cleaning member 3 are arranged on the axial side of blowing unit 2, and the two is assembled into entirety
Drawer module is simultaneously removably inserted in accommodating chamber 12.Air purification breathing module is generally configured to convenient for hand-held shape
Shape, in order to which the air cleaning unit as hand-held uses.Wherein, multiple air pushing holes 231 are formed on blowing unit 2, are exhaled
The position on the chin supporting plate 15 between area 11 and accommodating chamber 12 corresponding to wearer's mouth and nose is inhaled to offer so that air pushing hole 231 reveals
For the avoidance notch 121 of respiratory region 13, to be blown by air pushing hole 231 to respiratory region 13.It is set on the side wall of accommodating chamber 12
There is the /V conducting bar 122 as guiding mechanism, /V conducting bar 122 is used in disassembly process carry out air purification breathing module
It is oriented to, and /V can be carried out to air purification breathing module on lateral.
As shown in Fig. 2, being also formed with detent mechanism between air cleaning member 3 and accommodating chamber 12, which includes
The positioning pin 31 for being arranged on 3 bottom of air cleaning member and the dowel hole 123 for being formed in 12 bottom surface of accommodating chamber.Air purification list
Member 3 and after blowing unit 2 assembles, can drawer-like mode be pushed into accommodating chamber 12;When positioning pin 31 falls into dowel hole 123
After interior, that is, realize the installation of air purification breathing module.
It is formed in the preferred embodiment of the utility model, between blowing unit 2 and air cleaning member 3 dismountable solid
Fixed connection.For example, one or more blocked holes can be set on blowing unit 2, it is corresponding on 3 housing of air cleaning member
Position sets one or more clamping protrusions, by being clamped the clamping engagement between protrusion and blocked hole by 2 He of blowing unit
Air cleaning member 3 is securely removably connected at together.At the same time, formed between blowing unit 2 and air cleaning member 3
It is tightly connected, to prevent the extraneous air without purified treatment from entering blowing unit 2.
Fig. 3 and 4 is the structural exploded view of air purification breathing module.Referring first to Fig. 4, blowing unit 2 includes centrifugation wind
Machine 21 and the volute of blower constructed by pedestal 22 and side cover 23.Wherein, it is formed in pedestal 22 by annular 221 institute of peripheral wall
The assembling chamber surrounded forms diversion air duct between the centrifugal blower 21 being arranged in the installation cavity and annular peripheral wall 221
222, and diversion air duct 222 is configured to the radial dimension in inlet air flow path and gradually increases.It is also formed in pedestal 22 in sky
It is located at 222 downstream of diversion air duct and the plenum chamber 223 with water conservancy diversion inclined-plane 224 on flow of air path, corresponds on side cover 23
The region of plenum chamber 223 is formed with the air pushing hole 231 positioned at volute of blower axial side, and water conservancy diversion inclined-plane 224 is used for will be clean empty
Gas is guided to air pushing hole 231, so that pure air enters respiratory region 11 via air pushing hole 231.
Referring to Fig. 3 and 4, multiple champignon evaporation holes 225 are offered on water conservancy diversion inclined-plane 224, volute of blower is net adjacent to air
The axial side for changing unit 3 is provided with fragrance box 6, and fragrance box 6 is conducted with champignon evaporation hole 225.During work, through air purification
Pure air obtained from the processing of unit 3 enters blowing unit 2 by air inlet through hollow shaft hole 226, and champignon volatile matter is under air-flow drive
As pure air enters respiratory region 11 together, it is ensured that human body easily sucks the air of faint scent cleaning.
In addition, as shown in figure 3, volute of blower on the axial side of air cleaning member 3 adjacent to being additionally provided with around axis
The electric heating film 7 being distributed to air inlet hole 226.In the other embodiment of the utility model, respirator with air purifying function further includes
The electric heating film that is arranged on the annular peripheral wall 221 of installation cavity or individually set on the annular peripheral wall 221 of installation cavity electricity plus
Hotting mask.
With continued reference to Fig. 4, the respirator with air purifying function of the preferred embodiment in the utility model is further included mounted on wind turbine snail
Rechargeable battery 4 and control module 5 in shell.Rechargeable battery 4 provides electric energy for centrifugal blower 21 and electric heating film 7, and can
To realize cycle charging by 24 (see figure 1) of charge data interface on volute of blower.Certainly, those skilled in the art hold
It is readily understood, in the other embodiment of the utility model, electricity can also be provided using non-rechargeable battery or external power supply
Energy.
In the preferred embodiment of utility model, control module 5 can realize the switch and speed regulating control to centrifugal blower 21
And the switch of electric heating film 7 and temperature adjustment are controlled.Wherein, realized using control module 5 (such as logical to 21 rotating speed of centrifugal blower
Cross using air velocity transducer or air flow sensor) and 7 heating temperature of electric heating film (such as by detecting heating plate temperature and air
The temperature sensor of temperature) control belong to the known techniques of those skilled in the art, therefore omit detailed description herein.
In the preferred embodiment of the utility model, respirator with air purifying function can also include be arranged on respiratory region 11 with
The respiration transducer for detecting wearer's breathing state (is not shown in figure, such as is arranged in respiratory region 11 and corresponds to wearer mouthful
The position of nose), control module 5 controls the break-make and rotating speed of centrifugal blower 21 according to the detection signal of respiration transducer.
Although depicting the utility model above by preferred embodiment, but it is to be understood that, ordinary skill
For personnel in the invention scope for not departing from the utility model, all equal improvement made according to the utility model should be this practicality
New protection domain is covered.
Claims (10)
1. one kind is hand-held to wear dual-purpose respirator with air purifying function, have:
Body, including defining the mask of respiratory region and positioned at the mask lower part and the receiving that is connected with the respiratory region
Chamber;
It is characterized in that:
Hand held air purification breathing module, is removably disposed in the accommodating chamber;Wherein, the air purification breathing mould
Block includes the blowing unit and air cleaning member that seal and be fixedly connected between each other;The blowing unit is used to exhale to described
Area's air-supply is inhaled, the air cleaning member is used to provide pure air to the blowing unit;
Control module is arranged in the blowing unit.
2. respirator with air purifying function as described in claim 1, it is characterised in that:The blowing unit and the air purification
It is formed between unit and is removably secured connection.
3. respirator with air purifying function as described in claim 1, it is characterised in that:Air purification breathing module with it is described
Guiding mechanism and detent mechanism are formed between accommodating chamber;The guiding mechanism is used in disassembly process to the air purification
Breathing module is oriented to, and the detent mechanism is used to implement the air purification breathing module to be determined in the accommodating chamber
Position.
4. respirator with air purifying function as described in claim 1, it is characterised in that:The bottom of the respiratory region sets flexible
Chin supporting plate sets flexible bound edge at the mask rim.
5. respirator with air purifying function as claimed in claim 4, it is characterised in that:The chin supporting plate and the bound edge are formed
It is integrated.
6. respirator with air purifying function as claimed in claim 4, it is characterised in that:It is formed on the chin supporting plate towards described
The chin sticking part of respiratory region protrusion.
7. respirator with air purifying function as described in claim 1, it is characterised in that:
The blowing unit includes the volute of blower with assembling chamber and plenum chamber and is arranged in the installation cavity
Diversion air duct, the diversion air duct construction are formed between the annular peripheral wall of centrifugal blower, the centrifugal blower and the installation cavity
For in inlet air flow path radial dimension gradually increase;The plenum chamber is located at the diversion air duct in inlet air flow path
Downstream side, and with for by pure air to positioned at the volute of blower axial side air pushing hole guiding water conservancy diversion it is oblique
Face, so that pure air enters the respiratory region via the air pushing hole.
8. respirator with air purifying function as claimed in claim 7, it is characterised in that:Be provided in the volute of blower with it is described
The fragrance box that diversion air duct and/or the plenum chamber are connected.
9. respirator with air purifying function as claimed in claim 8, it is characterised in that:The fragrance box is led with the plenum chamber
Stream inclined-plane is connected.
10. respirator with air purifying function as described in claim 1, it is characterised in that:Electricity is additionally provided in the blowing unit
Pond.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720498259.2U CN207384623U (en) | 2017-05-08 | 2017-05-08 | It is hand-held to wear dual-purpose respirator with air purifying function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720498259.2U CN207384623U (en) | 2017-05-08 | 2017-05-08 | It is hand-held to wear dual-purpose respirator with air purifying function |
Publications (1)
Publication Number | Publication Date |
---|---|
CN207384623U true CN207384623U (en) | 2018-05-22 |
Family
ID=62401988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201720498259.2U Active CN207384623U (en) | 2017-05-08 | 2017-05-08 | It is hand-held to wear dual-purpose respirator with air purifying function |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN207384623U (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI683981B (en) * | 2019-02-15 | 2020-02-01 | 陳勇仁 | Air purifier with integrated air filtering mask |
CN110947114A (en) * | 2018-09-27 | 2020-04-03 | 皇家飞利浦有限公司 | Anti-pollution mask and control method |
CN111569293A (en) * | 2019-02-15 | 2020-08-25 | 陈勇仁 | Air cleaner integrated with air filtering mask |
WO2021207268A1 (en) * | 2020-04-07 | 2021-10-14 | Abc Filtration Corp. | Improved papr with viral resistant coatings |
-
2017
- 2017-05-08 CN CN201720498259.2U patent/CN207384623U/en active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110947114A (en) * | 2018-09-27 | 2020-04-03 | 皇家飞利浦有限公司 | Anti-pollution mask and control method |
TWI683981B (en) * | 2019-02-15 | 2020-02-01 | 陳勇仁 | Air purifier with integrated air filtering mask |
CN111569293A (en) * | 2019-02-15 | 2020-08-25 | 陈勇仁 | Air cleaner integrated with air filtering mask |
WO2021207268A1 (en) * | 2020-04-07 | 2021-10-14 | Abc Filtration Corp. | Improved papr with viral resistant coatings |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN207384623U (en) | It is hand-held to wear dual-purpose respirator with air purifying function | |
CN105056424B (en) | A kind of individual wearable air cleaning balance system | |
CN111163842A (en) | Multifunctional multipurpose breathing mask | |
GB2032284A (en) | Improvements in and relating to breathing apparatus | |
KR102055522B1 (en) | Portable air purifier | |
CA2090741A1 (en) | Face mask assembly and method | |
CN105617565B (en) | A kind of filtering type breathing mask | |
JP2017501781A (en) | Active ventilation system and breathing apparatus | |
CN106422104A (en) | Wearable breathing device | |
CN112274794B (en) | Face mask | |
CN111165965A (en) | Air purifying protective mask | |
CN111473459A (en) | Wearable air purifier | |
CN206414643U (en) | A kind of mouth mask with blower fan | |
CN106924905A (en) | Wearable breathing equipment | |
CN206852940U (en) | Wearable breathing equipment | |
CN206777623U (en) | Hand held air purifies breathing equipment and includes its active air-purifying respirator | |
KR20220000125U (en) | Full face mask for blocking fine dust | |
CN106964084A (en) | Hand held air purifies breathing equipment and the active air-purifying respirator including it | |
CN113491361A (en) | Virus isolation type mask | |
KR20240035946A (en) | Wearable device for breathing air treatment | |
CN2257730Y (en) | Air curtain dust-filtering respirator | |
CN102793312A (en) | Dustproof mouth mask with dynamic breathing function | |
CN205549272U (en) | Positive pressure filter mask | |
CN111359115A (en) | Wearable neck formula air disinfection purification unit that hangs | |
CN206809558U (en) | A kind of children's Portable breathing purification device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |