CN206950476U - A kind of wear-type air-purifying respirator - Google Patents

A kind of wear-type air-purifying respirator Download PDF

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Publication number
CN206950476U
CN206950476U CN201720474684.8U CN201720474684U CN206950476U CN 206950476 U CN206950476 U CN 206950476U CN 201720474684 U CN201720474684 U CN 201720474684U CN 206950476 U CN206950476 U CN 206950476U
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China
Prior art keywords
main frame
air
mouth mask
wear
cleaning unit
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CN201720474684.8U
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Chinese (zh)
Inventor
林寿明
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Foshan Shunde District Tuowei Electric Appliance Co Ltd
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Foshan Shunde District Tuowei Electric Appliance Co Ltd
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Abstract

It the utility model is related to dedusting technology field, disclose a kind of wear-type air-purifying respirator, including main frame, telescoping tube and mouth mask, the both ends of the mouth mask connect the both ends of main frame by telescoping tube respectively, it is characterized in that, efficient absorption air cleaning unit, high voltage package, control panel and electric supply installation are provided with the main frame, main frame side is provided with the air inlet with efficient absorption air cleaning unit UNICOM, the junction of the main frame and telescoping tube is provided with the first check valve, the mouth mask is provided with air outlet, and the air outlet is provided with the second check valve.Efficient absorption air cleaning unit is based on High Voltage principle of electric field, consumptive material need not be changed, it is simple in construction, small volume, the process that outside air enters efficient absorption air cleaning unit from air inlet is unobstructed, to that will not produce pressure difference between the first check valve, the air pressure in main frame is able to keep balancing with ambient pressure air inlet, avoids causing to feel suffocated.

Description

A kind of wear-type air-purifying respirator
Technical field
Dedusting technology field is the utility model is related to, more particularly, to a kind of wear-type air-purifying respirator.
Background technology
Air purifier is also known as air cleaner, air cleaner, clarifier, is to refer to adsorb, decompose or convert Various air pollutants(Generally comprise the finishing dirt of PM2.5, dust, pollen, peculiar smell, formaldehyde etc, bacterium, anaphylactogen etc.), The product of air cleanliness is effectively improved, is broadly divided into family expenses, commercialization, industry, building etc..
There are a variety of different technologies and medium in air purifier, it can provide a user the air of cleaning and safety. Conventional air purifying process has:Adsorption technology, bear(Just)Ion technology, brittle technology, photocatalyst technology, superstructure light mineralising Technology, HEPA high efficiency filters technology, electrostatic precipitation technology etc.;Material technology mainly has:Photocatalyst, activated carbon, synthetic fibers, The efficient materials of HEPA, anion generator etc..
Current air purifier is to be based on all kinds filter screen mostly, forces air through strainer filtering so as to reach empty Gas purifies purpose, and generally requires relatively high power blower fan in order to reach certain degree of purification and its maintain higher rotation speed, energy It is big to consume high noisy, and as the gradual blocking of filter screen, purifying rate can be decreased obviously, also needs to change consumptive material frequently.Secondly What is used is to be adsorbed and utilized highfield absorption principle using electrostatic principle, although both can improve filter screen type air substantially The shortcomings that clarifier, but because the relatively low purifying rate of the absorption affinity of electrostatic is limited, and it is past in order to increase adsorption area in highfield It is very complicated toward overall structure, electrode process requires too high, and manufacturing cost is high etc., so can't all popularize at present. It is not very comfortable, stuffy for breathing being present in conjunction with current mouth mask, to haze without any protective action, is used for multiple times, easily leads Pollution or bacterium infection are caused, it is unhygienic, easily cause respiratory disease.Printing and dyeing material contains a harmful huge sum of money mostly The shortcomings of category and sealing difference.
Current most of respirators force extraneous air using filter core purification, blower fan to fill into the combination of filtration system, by Purified in using filter core, cause extraneous air to be obstructed into respirator interior, it is therefore necessary to blown using blower fan, and blower fan is sent Wind is the process of a relative mechanical, and exhalation process and air-supply process carry out that the situation felt suffocated can be caused unavoidably, cause to make simultaneously User's unsmooth breath.China Patent Publication No. CN205586378U, entitled a kind of portable intelligent that utility model is created are empty Gas purifier, a kind of portable intelligent air purifier is which disclose, including mouth mask is provided with air purifier body, The mouth mask is silica gel mouth mask, is provided with an exhaust vent on silica gel mouth mask, a unidirectional air outlet valve, silica gel mouth are provided with exhaust vent The both ends of cover are respectively arranged with silica gel mouth mask joint one and silica gel mouth mask joint two, silica gel mouth mask joint one and silica gel mouth mask joint Two correspond to be cased with telescopic ripple tracheae one and telescopic ripple tracheae two respectively, telescopic ripple tracheae one and can stretch Filter element for purifier is provided among the ripple tracheae two of contracting, the filter element for purifier back side is fixed in fixed plate, the back side of fixed plate An air pressure probe is provided with, air pressure probe is connected with telescopic ripple tracheae one by sensor tracheae Logical, one end of filter element for purifier is provided with breeze fan, and breeze fan is connected with telescopic ripple tracheae one by blower fan tracheae Female connector connects.The patent solves the defects of breeze fan air-supply process mechanism, and wind is controlled using air pressure probe The operation of machine, lasting air-supply is avoided to cause to feel suffocated.But its weak point is air pressure probe reception signal transmission letter Number, the process that acts accordingly again of breeze fan reception signal need the regular hour, there is hysteresis quality, this is to a certain degree On can cause unsmooth breath.And blower fan is arranged close to human body brain, wear for a long time, the blower fan of vibration can produce to brain Adverse effect.
Therefore, it is necessary to the shortcomings that being directed in the prior art proposes to improve.
Utility model content
In view of this, the utility model is to overcome at least one deficiency described in above-mentioned prior art, there is provided a kind of energy consumption Low, zero seismaesthesia, smoothly wear-type air-purifying respirator of ventilating.
In order to solve above-mentioned technical problem, the utility model uses following technical proposals:
A kind of wear-type air-purifying respirator, including main frame, telescoping tube and mouth mask, the both ends of the mouth mask pass through respectively Telescoping tube connects the both ends of main frame, and efficient absorption air cleaning unit, high voltage package, control panel and power supply dress are provided with the main frame Put, main frame side is provided with the air inlet with efficient absorption air cleaning unit UNICOM, and the junction of the main frame and telescoping tube is set There is the first check valve, the mouth mask is provided with air outlet, and the air outlet is provided with the second check valve.
Respirator of the present utility model uses Chinese utility model publication number CN105797853A, and utility model creates title For the efficient absorption air cleaning unit disclosed in a kind of efficient absorption air cleaning unit and air purifier, its composition includes Corona module and main dust collection module, the corona module is arranged on main dust collection module and both interfix, the corona mould Block is provided with corona discharge electrode, the corona extremely wire, and the main dust collection module is provided with dust collecting electrode, the dust extremely polylith Energization pole plate side by side and separately, the wire is between energization pole plate, in addition to is combined with main dust collection module Secondary dust collection module, the secondary dust collection module are provided with secondary dust collecting electrode, and the secondary dust collecting electrode includes the non-energized induction plate of polylith, institute State in the space that non-energized induction plate is arranged between energization pole plate.Respirator of the present utility model is real by the technological means Now dredge and enter efficient absorption air cleaning unit from air inlet without stifled, loose but never miss continuing purge effect, outside air Process is unobstructed, and air inlet is to that will not produce pressure difference between the first check valve, the air pressure in main frame is able to and ambient pressure is protected Maintain an equal level weighing apparatus, avoids causing to feel suffocated, and need not change consumptive material.The flowing side of first check valve and the second check valve control gas To, effectively avoid gas backstreaming, mouth mask intracavitary formed gas annularly flow, ensure wearer's smooth breathing do not feel suffocated.
The main frame is U-shaped structure, and the efficient absorption air cleaning unit is arranged at the bottom of U-shape structure, it is described enter Air port is arranged on the left side or right side of U-shaped structure bottom, and the mouth mask connects the Liang Ge branches of U-shaped structure by telescoping tube, The right branch or left branch of the U-shaped structure connect with mouth mask.Respirator structure annular in shape, the head of human body can be worn on, Efficient absorption air cleaning unit for purifying air is arranged in the main frame of U-shape structure, during wearing, it is not necessary to hand-held main frame Or by it not on human body, convenient use.The main frame of U-shape structure is worn on rear side of human body brain, and air inlet is located at brain rear, Air outlet is located in front of brain, in the opposite direction, avoids the gas of exhalation from being again introduced into main frame.More importantly, the utility model Using efficient absorption air cleaning unit, using the dust granule in High Voltage electric field separates air, to ensure main dust collection module There are enough dust-collecting areas with secondary dust collection module while reduce the volume of main frame as far as possible, the efficient absorption purification of air dress Put in being horizontally disposed with, i.e., efficient absorption air cleaning unit is located at the left side at human body brain rear across brain left and right sides, air inlet Side or right side, the air after purification enters in mouth mask from right side telescoping tube or left side telescoping tube, and left side telescoping tube or right side are stretched The draw need not then set the first check valve, and to avoid not purified air from entering from left side telescoping tube or right side telescoping tube Mouth mask, the left or right of mouth mask can not be with main frame UNICOM.
Efficient absorption air cleaning unit for purifying air is divided using high pressure highfield absorption dust granule by corona From dust granule will be adhered on main dust collection module and secondary dust collection module, to ensure the clear of main dust collection module and secondary dust collection module Clean, user is needed periodically to clean it, and efficient absorption air cleaning unit, the U-shaped knot are taken out for convenience of user Posting port is provided with the downside of structure bottom, the posting port is provided with dodge gate, and the efficient absorption air cleaning unit passes through posting port Insert in main frame.
The components such as high voltage package, control panel, lithium battery are generally additionally provided with main frame, to ensure consolidating for each component relative position It is fixed, avoid other assemblies during taking-up efficient absorption air cleaning unit while remove, the main frame includes the upper casing mutually fastened Body and lower house, the other assemblies in addition to efficient absorption air cleaning unit are needed by opening between upper shell and lower house Cooperation can just insert in main frame or be taken out from main frame, be easy to user to clean respirator.
Different head part's different sizes, customization respirator is cumbersome, and the respirator for making ring-type is needed during wearing Release can just pack into human body head, therefore, the junction of the mouth mask and telescoping tube is provided with connector, the main frame and telescoping tube Junction pressed from both sides provided with spring grafting, the respirator also includes being arranged on rack band on the outside of telescoping tube, the rack band one End is connected with connector, and the other end is plugged in spring grafting folder.User is by pulling rack band to unclamp or tighten up breathing Device, it is simple in construction, it is easy to use.
To prevent face from head-on being encroached on by harmful substance, the respirator also includes protective face mask, the protective face mask Both sides connect mouth mask and/or main frame and/or connector by connect band respectively.Further, the protective face mask includes being used for The translucent cover of protecting human bodies face and for supporting the head of translucent cover to press from both sides, the translucent cover both ends are pressed from both sides by knob connector respectively Both ends, the both ends of head folder pass through connect band and connect mouth mask and/or main frame and/or connector respectively.Translucent cover passes through rotation Button is connected on head folder, and user can be according to the use angle for being actually needed adjustment translucent cover up and down.Further, the company Tape splicing is provided with the band tooth through hole of strip, and the mouth mask and/or main frame and/or connector are provided with to be connected with band tooth through hole Band tooth spiral button;User can adjust the position of protective face mask and elastic according to actual conditions.Further, the translucent cover It is provided with the interface coordinated with mouth mask.
In order to be effectively isolated exhalation and suck gas, it is provided with the cooperation between each spare and accessory parts of respirator of the adsorption cleaning Sealing ring, the air for making to purify by the first efficient absorption air cleaning unit in laggard inlet shroud keep clean, thoroughly excluded Exhaled gas.
The electric supply installation of this patent uses lithium battery, specially chargeable poly-lithium battery, can repeatedly use.
The utility model has the advantages that compared with prior art:
1st, the air cleaning unit in the utility model is using disclosed in Chinese utility model publication number CN105797853A Efficient absorption air cleaning unit, the utility model are based on High Voltage principle of electric field, simple in construction without changing consumptive material, volume Small, the process that outside air enters efficient absorption air cleaning unit from air inlet is unobstructed, air inlet to the first check valve Between will not produce pressure difference, the air pressure in main frame is able to keep balancing with ambient pressure, avoids causing to feel suffocated.
2nd, the flow direction of the first check valve and the second check valve control gas, effectively avoids gas backstreaming, in mouth mask chamber The interior annularly flow for forming gas, ensure that wearer's smooth breathing is not felt suffocated.
3rd, main frame takes the shape of the letter U structure, is provided with posting port on the downside of U-shaped structure bottom, the posting port is provided with dodge gate, conveniently made User periodically puts into efficient absorption air cleaning unit therein and takes out cleaning.
4th, respirator also includes protective face mask, reaches the purpose that protection eyes and face are head-on encroached on from harmful substance.
Brief description of the drawings
Fig. 1 is the partial sectional view of respirator;
Fig. 2 is the scheme of installation of main frame;
Fig. 3 is the decomposing schematic representation of main frame;
Fig. 4 is the structural representation of respirator;
Description of reference numerals:Main frame 100, air inlet 110, efficient absorption air cleaning unit 111, posting port 120, activity Door 121, upper shell 131, lower house 132, high voltage package 140, control panel 150, electric supply installation 160, mouth mask 200, air outlet 210, Telescoping tube 300, the first check valve 410, the second check valve 420, connector 510, spring grafting folder 520, rack band 530, protection Mask 600, translucent cover 610, interface 611, head folder 620, knob 630, connect band 640, band tooth through hole 641, band tooth spiral button 642。
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent;It is attached in order to more preferably illustrate the present embodiment Scheme some parts to have omission, zoom in or out, do not represent the size of actual product;To those skilled in the art, Some known features and its explanation may be omitted and will be understood by accompanying drawing;Position relationship is used to be only used for described in accompanying drawing Exemplary illustration, it is impossible to be interpreted as the limitation to this patent.The utility model is done with reference to specific embodiment further in detail Describe in detail bright.
Embodiment
As shown in figure 1, a kind of wear-type air-purifying respirator, including main frame 100, telescoping tube 300 and mouth mask 200, institute The both ends for stating mouth mask 200 connect the both ends of main frame 100 by telescoping tube 300 respectively, and it is empty to be provided with efficient absorption in the main frame 100 Air purifying apparatus 111, high voltage package 140, control panel 150 and electric supply installation 160, the side of main frame 100 are provided with and efficient absorption air The air inlet 110 of the UNICOM of purifier 111, the junction of the main frame 100 and telescoping tube 300 are provided with the first check valve 410, institute State mouth mask 200 and be provided with air outlet 210, the air outlet 210 is provided with the second check valve 420.
Respirator of the present utility model uses Chinese utility model publication number CN105797853A, and utility model creates title For the efficient absorption air cleaning unit 111 disclosed in a kind of efficient absorption air cleaning unit 111 and air purifier, its structure Into including corona module and main dust collection module, the corona module is arranged on main dust collection module and both interfix, described Corona module is provided with corona discharge electrode, the corona extremely wire, and the main dust collection module is provided with dust collecting electrode, the dust collecting electrode For the energization pole plate of polylith side by side and separately, the wire between energization pole plate, in addition to main dust collection module phase With reference to secondary dust collection module, the secondary dust collection module is provided with secondary dust collecting electrode, and the secondary dust collecting electrode includes the non-through electric induction of polylith Pole plate, the non-energized induction plate are arranged in the space between energization pole plate.Respirator of the present utility model passes through the skill Art means, which are realized, dredges without stifled, loose but never miss continuing purge effect, and air inlet 110 enters efficient absorption air to outside air again The process of purifier 111 is unobstructed, will not produce pressure difference between the check valve of air inlet 110 to the first 410, in main frame 100 Air pressure be able to ambient pressure keep balance, avoid causing to feel suffocated, and consumptive material need not be changed.The He of first check valve 410 Second check valve 420 controls the flow direction of gas, effectively avoids gas backstreaming, and the annular of gas is formed in the intracavitary of mouth mask 200 Flowing, ensure that wearer's smooth breathing is not felt suffocated.
The main frame 100 is U-shaped structure, and the efficient absorption air cleaning unit 111 is arranged at the bottom of U-shape structure, The air inlet 110 is arranged on the left side or right side of U-shaped structure bottom, and the mouth mask 200 connects U-shaped by telescoping tube 300 The Liang Ge branches of structure, the right branch or left branch of the U-shaped structure connect with mouth mask 200.Respirator structure annular in shape, can be with The head of human body is worn on, the efficient absorption air cleaning unit 111 for purifying air is arranged on the main frame 100 of U-shape structure In, during wearing, it is not necessary to hand-held main frame 100 or by it not on human body, convenient use.The main frame 100 of U-shape structure is worn on people On rear side of body brain, air inlet 110 is located at brain rear, and air outlet 210 is located in front of brain, in the opposite direction, avoids the gas of exhalation Body is again introduced into main frame 100.More importantly, the utility model uses efficient absorption air cleaning unit 111, utilizes High Voltage Dust granule in electric field separates air, to ensure that main dust collection module and secondary dust collection module have enough dust-collecting areas while to the greatest extent may be used The volume of the reduction main frame 100 of energy, for the efficient absorption air cleaning unit 111 in being horizontally disposed with, i.e. efficient absorption air is net Makeup puts 111 and is located at the left side or right side at human body brain rear across brain left and right sides, air inlet 110, the air after purification from Right side telescoping tube 300 or left side telescoping tube 300 enter in mouth mask 200, and left side telescoping tube 300 or right side telescoping tube 300 then without First check valve 410 need to be set, and to avoid not purified air from entering from left side telescoping tube 300 or right side telescoping tube 300 Inlet shroud 200, the left or right of mouth mask 200 can not be with the UNICOM of main frame 100.
As shown in Fig. 2 utilize high pressure highfield absorption dust for the efficient absorption air cleaning unit 111 for purifying air Particle, will be adhered on main dust collection module and secondary dust collection module by the dust granule that corona separates, for ensure main dust collection module and The cleaning of secondary dust collection module, user are needed periodically to clean it, and efficient absorption purification of air is taken out for convenience of user Device 111, the U-shaped structure bottom downside are provided with posting port 120, and the posting port 120 is provided with dodge gate 121, described efficient Absorption air cleaning unit 111 is inserted in main frame 100 by posting port 120.
As shown in figure 3, the components such as high voltage package, control panel, lithium battery are generally additionally provided with main frame 100, to ensure each component The fixation of relative position, avoid other assemblies during taking-up efficient absorption air cleaning unit 111 while remove, the main frame 100 Including the upper shell 131 and lower house 132 mutually fastened, the other assemblies in addition to efficient absorption air cleaning unit 111 need It can just insert in main frame 100 or be taken out from main frame 100 by opening the cooperation between upper shell 131 and lower house 132, just Respirator is cleaned in user.
Different head part's different sizes, customization respirator is cumbersome, and the respirator for making ring-type is needed during wearing Release can just pack into human body head, therefore, the junction of the mouth mask 200 and telescoping tube 300 is provided with connector 510, the master The junction of machine 100 and telescoping tube 300 is provided with spring grafting folder 520, and the respirator also includes being arranged on the outside of telescoping tube 300 Rack band 530, described one end of rack band 530 is connected with connector 510, and the other end is plugged in spring grafting folder 520.User It is simple in construction by pulling rack band 530 to unclamp or tighten up respirator, it is easy to use.
As shown in figure 4, to prevent face from head-on being encroached on by harmful substance, the respirator also includes protective face mask 600, institute The both sides for stating protective face mask 600 connect connector 510 by connect band 640 respectively.Further, the protective face mask 600 wraps Include for the translucent cover 610 of protecting human bodies face and for supporting the head of translucent cover to press from both sides 620, the both ends of translucent cover 610 difference By the both ends of the connector of knob 630 folder 620, the both ends of the head folder 620 connect connector 510 by connect band 640 respectively. Translucent cover 610 is connected on head folder 620 by knob 630, and user can adjust translucent cover 610 up and down according to being actually needed Use angle.Further, the connect band 640 be provided with strip band tooth through hole 641, the connector 510 be provided with The band tooth spiral button 642 being connected with tooth through hole 641;User can adjust the position of protective face mask 600 according to actual conditions It is and elastic.Further, the translucent cover 610 is provided with the interface 611 coordinated with mouth mask 200.
In order to be effectively isolated exhalation and suck gas, it is provided with the cooperation between each spare and accessory parts of respirator of the adsorption cleaning Sealing ring, the air for making to purify by the first efficient absorption air cleaning unit 111 in laggard inlet shroud 200 keeps clean, thorough Bottom excludes exhaled gas.
The electric supply installation 160 is specially chargeable poly-lithium battery.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above On the basis of can also make other changes in different forms.There is no need and unable to give all embodiments It is exhaustive.All made within spirit of the present utility model and principle all any modification, equivalent and improvement etc., should be included in Within the protection domain of the utility model claims.

Claims (10)

1. a kind of wear-type air-purifying respirator, including main frame, telescoping tube and mouth mask, the both ends of the mouth mask are respectively by stretching The draw connects the both ends of main frame, it is characterised in that efficient absorption air cleaning unit, high voltage package, control are provided with the main frame Plate and electric supply installation, main frame side are provided with the air inlet with efficient absorption air cleaning unit UNICOM, the main frame and telescoping tube Junction be provided with the first check valve, the mouth mask is provided with air outlet, and the air outlet is provided with the second check valve.
2. wear-type air-purifying respirator according to claim 1, it is characterised in that the main frame is U-shaped structure, institute State the bottom that efficient absorption air cleaning unit is arranged at U-shape structure, the air inlet be arranged at U-shaped structure bottom left side or On right side, the mouth mask by telescoping tube connect U-shaped structure Liang Ge branches, the right branch or left branch of the U-shaped structure with Mouth mask connects.
3. wear-type air-purifying respirator according to claim 2, it is characterised in that on the downside of the U-shaped structure bottom Provided with posting port, the posting port is provided with dodge gate, and the efficient absorption air cleaning unit is inserted in main frame by posting port.
4. wear-type air-purifying respirator according to claim 3, it is characterised in that the main frame includes mutually fastening Upper shell and lower house.
5. wear-type air-purifying respirator according to claim 1, it is characterised in that the company of the mouth mask and telescoping tube Meet place and be provided with connector, the junction of the main frame and telescoping tube presss from both sides provided with spring grafting, and the respirator also includes being arranged on Rack band on the outside of telescoping tube, described rack band one end are connected with connector, and the other end is plugged in spring grafting folder.
6. the wear-type air-purifying respirator according to any one of claim 1 ~ 5, it is characterised in that the respirator is also Including protective face mask, the both sides of the protective face mask connect mouth mask and/or main frame and/or connector by connect band respectively.
7. wear-type air-purifying respirator according to claim 6, it is characterised in that the protective face mask includes being used for The translucent cover of protecting human bodies face and for supporting the head of translucent cover to press from both sides, the translucent cover both ends are pressed from both sides by knob connector respectively Both ends, the both ends of head folder pass through connect band and connect mouth mask and/or main frame and/or connector respectively.
8. wear-type air-purifying respirator according to claim 6, it is characterised in that the connect band is provided with strip Band tooth through hole, the mouth mask and/or main frame and/or connector are provided with and the band tooth spiral button that is connected with tooth through hole.
9. wear-type air-purifying respirator according to claim 7, it is characterised in that the translucent cover is provided with and mouth Cover the interface coordinated.
10. wear-type air-purifying respirator according to claim 6, it is characterised in that the electric supply installation is lithium electricity Pond.
CN201720474684.8U 2017-05-02 2017-05-02 A kind of wear-type air-purifying respirator Active CN206950476U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108853824A (en) * 2018-03-30 2018-11-23 广州市信宏洗衣机械有限公司 A kind of air-purifying respirator air inlet method and the respirator with this method
CN111991718A (en) * 2020-07-07 2020-11-27 东阳市汉宸膜技术有限公司 Medical head-wearing purification mask combined with polytetrafluoroethylene membrane and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108853824A (en) * 2018-03-30 2018-11-23 广州市信宏洗衣机械有限公司 A kind of air-purifying respirator air inlet method and the respirator with this method
CN111991718A (en) * 2020-07-07 2020-11-27 东阳市汉宸膜技术有限公司 Medical head-wearing purification mask combined with polytetrafluoroethylene membrane and preparation method thereof

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