CN115400362B - Air supply device - Google Patents

Air supply device Download PDF

Info

Publication number
CN115400362B
CN115400362B CN202110586103.0A CN202110586103A CN115400362B CN 115400362 B CN115400362 B CN 115400362B CN 202110586103 A CN202110586103 A CN 202110586103A CN 115400362 B CN115400362 B CN 115400362B
Authority
CN
China
Prior art keywords
air
wind speed
slow release
supply device
air supply
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
Application number
CN202110586103.0A
Other languages
Chinese (zh)
Other versions
CN115400362A (en
Inventor
简甦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Huanbaojia Health Technology Co ltd
Original Assignee
Guangdong Huanbaojia Health Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Huanbaojia Health Technology Co ltd filed Critical Guangdong Huanbaojia Health Technology Co ltd
Priority to CN202110586103.0A priority Critical patent/CN115400362B/en
Publication of CN115400362A publication Critical patent/CN115400362A/en
Application granted granted Critical
Publication of CN115400362B publication Critical patent/CN115400362B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/10—Respiratory apparatus with filter elements
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/02—Filters for breathing-protection purposes for respirators
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F9/00—Use of air currents for screening, e.g. air curtains
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

The embodiment of the invention provides a breathing air conveying method and an air supply device, and relates to the technical field of air conveying. The breathing air delivery method includes ejecting an air curtain around the face at an ejection wind speed; injecting breathing air into the air curtain at a slow-release air speed; wherein the jet wind speed is greater than the sustained release wind speed. In the embodiment of the invention, the air curtain can isolate the air blown out from the slow release port from the external air, so that a user can breathe the breathing air injected from the slow release port, the pollution of the external air to the air in the air curtain can be reduced, and the quality of the air breathed in by the user is improved.

Description

Air supply device
Technical Field
The invention relates to the technical field of air conveying, in particular to an air supply device.
Background
The good air quality is a basic condition of human safety and health, the air quality in the natural environment needs to be protected by various environmental protection means, and from the respiratory point of view, the influence of the indoor air quality on the safety and health is larger, and the safety, the health and the comfort can be guaranteed in three layers.
In the existing conveying method, the conveyed breathing air cannot be isolated from the outside air, so that the outside air pollutes the breathing air.
Disclosure of Invention
The invention aims to provide a breathing air conveying control method and an air supply device, and the air supply device provided by the embodiment can isolate external air from air on the face of a user, can reduce pollution of the external air to the air in an air curtain and improve the quality of the air breathed in by the user.
Embodiments of the invention may be implemented as follows:
in a first aspect, an embodiment of the present invention provides a respiratory air delivery method, including:
jetting an air curtain surrounding the face at a jet wind speed;
injecting breathing air into the air curtain at a slow-release air speed; wherein the jet wind speed is greater than the sustained release wind speed.
In an alternative embodiment of the invention, the jet wind speed is greater than or equal to 2m/s and the sustained wind speed is less than or equal to 1m/s.
In a second aspect, an embodiment of the present invention provides an air supply device including: the air delivery device comprises a wearing part, an upper cover and a bottom, wherein the upper cover, the bottom and the wearing part are connected and jointly form a delivery cavity for delivering air, a slow-release port communicated with the delivery cavity is arranged on the bottom and close to the wearing part, and a jet port communicated with the delivery cavity is arranged on the bottom and far away from the wearing part;
the jet orifice is used for jetting an air curtain surrounding the face at jet wind speed;
the slow release port is used for injecting breathing air into the air curtain at a slow release wind speed, and the injection wind speed is larger than the slow release wind speed.
In an alternative embodiment of the present invention, the number of the ejection openings is plural, and a distance between the plurality of the ejection openings is less than or equal to 2mm.
In an alternative embodiment of the present invention, the injection port has a first end and a second end disposed opposite to each other, the first end being disposed adjacent to the dispensing chamber, and the first end having a larger vent area than the second end.
In an alternative embodiment of the invention, the width of the first end is greater than or equal to 5mm and the width of the second end is less than or equal to 1mm.
In an alternative embodiment of the present invention, the sustained release port has a third end and a fourth end that are disposed opposite to each other, the third end is disposed near the dispensing cavity, and a ventilation area of the third end is smaller than a ventilation area of the fourth end.
In an alternative embodiment of the present invention, the width of the third end is less than or equal to 1mm, and the width of the fourth end is greater than or equal to 2mm.
In an alternative embodiment of the invention, a filter member is provided at the slow release port for filtering air ejected from the slow release port.
In an alternative embodiment of the present invention, an air inlet is provided on the wearing part or the upper cover, and the air inlet is communicated with the distribution cavity and is used for introducing air into the distribution cavity.
The embodiment of the invention has the beneficial effects that: the breathing air delivery method includes ejecting an air curtain around the face at an ejection wind speed; injecting breathing air into the air curtain at a slow-release air speed; wherein the jet wind speed is greater than the sustained release wind speed.
In the embodiment of the invention, the air curtain can isolate the air blown out from the slow release port from the external air, so that a user can breathe the breathing air injected from the slow release port, the pollution of the external air to the air in the air curtain can be reduced, and the quality of the air breathed in by the user is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view illustrating a structure of an air supply device according to a first embodiment of the present invention at a first viewing angle.
Fig. 2 is a schematic structural view of a second view of the air supply device according to the first embodiment of the present invention.
Fig. 3 is a schematic view showing a structure of an ejection port of the air supply device according to the first embodiment of the present invention.
Fig. 4 is a schematic view showing a structure of a sustained release port of an air supply device according to a first embodiment of the present invention.
Fig. 5 is a flowchart of a breathing air delivery method according to a second embodiment of the present invention.
Icon: 100-air supply device; 110-a wearing part; 112-a dispensing chamber; 120-upper cover; 130-bottom; 140-jet ports; 142-a first end; 144-second end; 150-slow release port; 152-a third end; 154-fourth end; 160-a mounting portion; 170-outer edge; 180-air inlet.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
First embodiment
Referring to fig. 1 and 2, the present embodiment provides an air supply device 100, where the air supply device 100 provided in the present embodiment can isolate the external air from the air on the face of the user, so as to reduce the pollution of the external air to the air in the air curtain and improve the quality of the air breathed in by the user.
In the present embodiment, the air supply device 100 includes: the wearing part 110, the upper cover 120 and the bottom 130, wherein the upper cover 120, the bottom 130 and the wearing part 110 are connected and jointly form a delivery cavity 112 for conveying air, a slow release port 150 communicated with the delivery cavity 112 is arranged on the bottom 130 and close to the wearing part 110, and an injection port 140 communicated with the delivery cavity 112 is arranged on the bottom 130 and far away from the wearing part 110;
the jet port 140 is for jetting an air curtain surrounding the face at a jet wind speed;
the slow release port 150 is used for injecting breathing air into the air curtain at a slow release wind speed, and the injection wind speed is larger than the slow release wind speed.
In this embodiment, the wearing part 110 is mainly used to wear the whole air supply device 100 on the head of a user, the slow release opening 150 is close to the user, the injection opening 140 is far away from the user, the injection opening 140 forms an air curtain with the injection wind speed, the air curtain can isolate the air blown out from the slow release opening 150 from the external air, so that the user can breathe the breathing air injected from the slow release opening 150, the pollution of the external air to the air in the air curtain can be reduced, and the quality of the air breathed by the user is improved.
In addition, the jet orifice 140 forms an air curtain isolating the face of the user from the outside at a larger jet air speed, and injects air for the user to breathe at a smaller slow-release air speed into the air curtain, forms an air curtain at a larger jet air speed, and injects air for breathing at a smaller slow-release air speed, so that the discomfort of the user caused by the fact that the larger air speed forming the air curtain is directly blown to the face of the user can be avoided.
Meanwhile, since the wearing part 110 is generally worn on the head of the user, the air injected from the injection port 140 and the air injected from the slow release port 150 are both injected downward, so that micro positive pressure is formed around the face of the user, and the outside air is prevented from going from the bottom 130 of the air curtain to the inside of the air curtain, thereby ensuring the air quality in the air curtain.
In the present embodiment, in order to form a continuous air curtain of air ejected from the ejection port 140, the higher the ejection wind speed is 2m/s or more, the better the tightness of the air curtain is as the ejection wind speed is, and the inside of the air curtain can be separated from the outside environment.
Because the air blown out from the slow release port 150 is mainly used for breathing by the user, if the slow release wind speed is high, the user can not feel good in breathing experience, and therefore the slow release wind speed should be low, breeze appears in the air curtain, and the user can breathe conveniently. Thus, the sustained release wind speed is less than or equal to 1m/s.
In this embodiment, the air entering the dispensing chamber 112 is purified air that has been subjected to multiple treatments such as filtration, sterilization, etc.
In this embodiment, the bottom 130 further has a mounting portion 160 protruding therefrom, the mounting portion 160 is disposed away from the wearing portion 110, and the injection port 140 is disposed on the mounting portion 160. The position of the injection port 140 provided in the mounting portion 160 is lower than the position of the sustained release port 150, and thus, the problem of leakage of the breathing air in the air curtain from the air curtain can be reduced in the process of forming the air curtain at the injection speed by the injection port 140.
In the present embodiment, the number of the ejection openings 140 is plural, and the distance between the plurality of ejection openings 140 is less than or equal to 2mm.
The plurality of injection ports 140 are annularly disposed on the side of the bottom 130 far from the wearing part 110, and it can be considered that the plurality of injection ports 140 are annularly disposed around the face of the user to isolate the face of the user from the external environment, so as to prevent the external air from entering the air curtain and polluting the air in the air curtain, thereby improving the health and safety of the air for breathing of the user.
Meanwhile, the longer the length of the mounting portion 160, the longer the ejection port 140 length, and the ejection port 140 may form an elongated slit, thereby increasing the ejection speed.
Referring to fig. 3, in the present embodiment, the injection port 140 has a first end 142 and a second end 144 disposed opposite to each other, the first end 142 is disposed near the dispensing chamber 112, and the ventilation area of the first end 142 is larger than that of the second end 144.
In this embodiment, the air ejected from the ejection port 140 and the slow release port 150 is the air entering the distribution chamber 112, and different wind speeds are realized according to the structures of the ejection port 140 and the slow release port 150, so that the air supply device 100 can simultaneously eject a larger ejection wind speed and a smaller slow release wind speed, and the contradiction between simultaneously ejecting a high wind speed and a low wind speed is solved.
The ventilation area of the first end 142 is larger than that of the second end 144, so that the injection port 140 may be considered to be gradually reduced from inside to outside, and when the air in the dispensing chamber 112 enters the injection port 140 from the first end 142, the air gradually extrudes through the gradually reduced channel of the injection port 140, so that the air not injected from the second end 144 may form an air curtain at the injection wind speed.
In this embodiment, the injection port 140 may be an elongated slit with a gradually decreasing diameter from inside to outside. The greater the gap between the first end 142 and the second end 144, the greater the velocity of the air curtain ejected from the ejection orifice 140.
In this embodiment, the width of the first end 142 is greater than or equal to 5mm and the width of the second end 144 is less than or equal to 1mm.
In the present embodiment, when the width of the first end 142 is greater than or equal to 5mm and the width of the second end 144 is less than or equal to 1mm, under an appropriate pressure, it can be considered that the air from the injection port 140 forms an air curtain at an injection speed of 2 m/s.
Referring to fig. 4, in the present embodiment, the sustained release port 150 has a third end 152 and a fourth end 154 disposed opposite to each other, the third end 152 is disposed near the dispensing chamber 112, and the ventilation area of the third end 152 is smaller than that of the fourth end 154.
The shape of the sustained-release port 150 is opposite to the shape of the injection port 140, the injection port 140 is small inside and large outside, and the sustained-release port 150 is large inside and large outside, and when the air in the distribution chamber 112 enters the sustained-release port 150 from the third end 152, the pressure of the air entering the sustained-release port 150 gradually decreases due to the gradual increase of the sustained-release port 150, and the sustained-release wind speed also gradually decreases.
It will be readily appreciated that the greater the difference between the ventilation area of the third end 152 and the ventilation area of the fourth end 154, the less the sustained wind speed, and that in order to ensure that the sustained wind speed can be as small as possible, the ventilation area of the third end 152 needs to be as small as possible and the ventilation area of the fourth end 154 is as large as possible. In order to ensure the air volume in the air curtain, the number of the slow release openings 150 is set to be plural, the specific number can be set according to the actual situation,
in this embodiment, the width of the third end 152 is less than or equal to 1mm and the width of the fourth end 154 is greater than or equal to 2mm.
In the present embodiment, it is considered that the sustained-release wind speed in the sustained-release port 150 can be approximately 1mm/s or so when the width of the third end 152 is less than 1mm and the width of the fourth end 154 is greater than 2mm under an appropriate pressure condition.
In this embodiment, the slow release port 150 is provided with a filter for filtering air ejected from the slow release port 150.
In this embodiment, the filter element may be disposed near the third end 152 or near the fourth end 154, which further plays a role in filtering, so as to prevent impurities entering the dispensing cavity 112 from being blown out from the slow release port 150, affect the breathing quality of the user, and play a role in pressure reduction and slow release.
Referring to fig. 1 and 2, in the present embodiment, an air inlet 180 is provided on the wearing part 110 or the upper cover 120, and the air inlet 180 is communicated with the dispensing cavity 112 for introducing air into the dispensing cavity 112.
The air inlet 180 is mainly used for being connected with an air source, so that air after being subjected to filtration, sterilization and the like enters the distribution cavity 112 and forms two kinds of air with different speeds through the injection port 140 and the slow release port 150. The air inlet 180 may be connected to a matched air source at any position, that is, the air supply device 100 provided in this embodiment is portable and may be adapted to a matched air source.
In this embodiment, the air supply device 100 further includes an outer edge 170, and the outer edge 170 is disposed on the side of the bottom 130 near the injection port 140, and may be the outer edge 170, the upper cover 120, the bottom 130, and the wearing part 110 together form the distribution chamber 112.
In summary, in the air supply device 100 provided in this embodiment, the wearing part 110 is mainly used to wear the whole air supply device 100 on the head of a user, the slow release opening 150 is disposed close to the user, the injection opening 140 is disposed far away from the user, the injection opening 140 forms an air curtain with the injection wind speed, the air curtain can isolate the air blown out from the slow release opening 150 from the external air, so that the user can breathe the breathing air injected from the slow release opening 150, the pollution of the external air to the air in the air curtain can be reduced, and the quality of the air breathed by the user is improved.
Second embodiment
Referring to fig. 5, the present embodiment provides a method for transporting air for breathing, which is mainly used in the air supply device 100 provided in the first embodiment, and the method for transporting air for breathing provided in the present embodiment can isolate the air from the outside air and the air in the face of the user, so as to reduce the pollution of the air in the air curtain caused by the air from the outside, and improve the quality of the air breathed by the user.
For the sake of brief description, the first embodiment may be referred to where this embodiment is not mentioned.
The breathing air conveying method provided by the embodiment specifically comprises the following steps:
step S100, jetting out an air curtain surrounding the face at the jet wind speed.
Step S200, injecting breathing air into the air curtain at a slow-release air speed; wherein the jet wind speed is greater than the slow release wind speed.
In this embodiment, the jet wind speed is greater than or equal to 2m/s and the sustained release wind speed is less than or equal to 1m/s.
In the present embodiment, in order to form a continuous air curtain of air ejected from the ejection port 140, the ejection wind speed is greater than or equal to 2m/s, and the pressure of the air curtain is greater as the ejection wind speed is greater, so that the inside of the air curtain can be separated from the outside environment.
Because the air blown out from the slow release port 150 is mainly used for breathing by the user, if the slow release wind speed is high, the user can not feel good in breathing experience, and therefore the slow release wind speed should be low, breeze appears in the air curtain, and the user can breathe conveniently. Thus, the sustained release wind speed is less than or equal to 1m/s.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (6)

1. An air supply device, characterized in that the air supply device includes: the air delivery device comprises a wearing part, an upper cover and a bottom, wherein the upper cover, the bottom and the wearing part are connected and jointly form a delivery cavity for delivering air, a slow-release port communicated with the delivery cavity is arranged on the bottom and close to the wearing part, and a jet port communicated with the delivery cavity is arranged on the bottom and far away from the wearing part;
the jet orifice is used for jetting an air curtain surrounding the face at jet wind speed;
the slow release port is used for injecting breathing air into the air curtain at a slow release wind speed, and the injection wind speed is larger than the slow release wind speed;
the jet orifice is provided with a first end and a second end which are oppositely arranged, the first end is close to the distribution cavity, and the ventilation area of the first end is larger than that of the second end;
the slow release port is provided with a third end and a fourth end which are oppositely arranged, the third end is close to the distribution cavity, and the ventilation area of the third end is smaller than that of the fourth end.
2. An air supply device according to claim 1, wherein the number of the ejection openings is plural, and a distance between the plurality of the ejection openings is 2mm or less.
3. An air delivery device as recited in claim 1, wherein the first end has a width of greater than or equal to 5mm and the second end has a width of less than or equal to 1mm.
4. An air supply device according to claim 1, wherein the third end has a width of 1mm or less and the fourth end has a width of 2mm or more.
5. An air supply device according to claim 1, wherein a filter member is provided at the slow release port, and the filter member is configured to filter air ejected from the slow release port.
6. An air supply device according to claim 1, wherein an air inlet is provided in the wearing part or the upper cover, and the air inlet communicates with the distribution chamber to introduce air into the distribution chamber.
CN202110586103.0A 2021-05-27 2021-05-27 Air supply device Active CN115400362B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110586103.0A CN115400362B (en) 2021-05-27 2021-05-27 Air supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110586103.0A CN115400362B (en) 2021-05-27 2021-05-27 Air supply device

Publications (2)

Publication Number Publication Date
CN115400362A CN115400362A (en) 2022-11-29
CN115400362B true CN115400362B (en) 2023-08-18

Family

ID=84155496

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110586103.0A Active CN115400362B (en) 2021-05-27 2021-05-27 Air supply device

Country Status (1)

Country Link
CN (1) CN115400362B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207203241U (en) * 2017-06-28 2018-04-10 常州大学 A kind of solar air curtain type non-contact air clarifier
CN209915110U (en) * 2019-06-04 2020-01-10 三河久保科技有限公司 Smoke-proof helmet for fire fighting
CN111249637A (en) * 2020-03-18 2020-06-09 重庆陈氏清洁服务有限公司 Human body respiration protection method and device
CN111789338A (en) * 2020-08-11 2020-10-20 天津市人民医院 Protective head tool capable of replacing mask and working method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10821255B2 (en) * 2015-12-11 2020-11-03 Gholam Hossein Zereshkian Personalized forced air purifier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207203241U (en) * 2017-06-28 2018-04-10 常州大学 A kind of solar air curtain type non-contact air clarifier
CN209915110U (en) * 2019-06-04 2020-01-10 三河久保科技有限公司 Smoke-proof helmet for fire fighting
CN111249637A (en) * 2020-03-18 2020-06-09 重庆陈氏清洁服务有限公司 Human body respiration protection method and device
CN111789338A (en) * 2020-08-11 2020-10-20 天津市人民医院 Protective head tool capable of replacing mask and working method

Also Published As

Publication number Publication date
CN115400362A (en) 2022-11-29

Similar Documents

Publication Publication Date Title
US20210260321A1 (en) Mask vent
WO2006083989A3 (en) Continuous flow selective delivery of therapeutic gas
EP2298400B1 (en) A mask and a vent assembly therefor
CA2574398A1 (en) Powder inhaler featuring reduced compaction
WO2014169424A1 (en) Electronic cigarette and suction nozzle cover thereof
NZ767991A (en) Gas washout vent for patient interface
CN102470229A (en) Multiple chambers mask
CN102112172A (en) Heat and moisture exchange unit with resistance indicator
CA2521088A1 (en) Apparatus and method for forming fibers
NZ720629A (en) Delivery of respiratory therapy
WO2005009323A3 (en) A nebuliser for the production of aerosolized medication
ITBS20090030U1 (en) TWO-SPEED AMPOLLA DELIVERY FOR AEROSOLTERAPY APPLIANCES
CN108571037A (en) Hygienic insertion unit
CN115400362B (en) Air supply device
EP2903675B1 (en) Customizable cushion utilizing fitted plug inserts
WO2011153189A3 (en) Cpap mask frame
CN107019855A (en) Intelligent water conservancy diversion mouth mask
KR102331231B1 (en) A mask having multi-functions
ES2748874T3 (en) Air induction nozzle
DE2903921C2 (en) Respirator hood
US10960156B2 (en) Nebulizer and breath-actuated nebulization method
CN208212318U (en) Cold flow expiration valve arrangement
EP3522965B1 (en) Interface device formable by additive manufacturing process
CN211884833U (en) Atomizing connector and atomizing device
CN106232184A (en) Respiratory protection equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant