CN111167033B - Positive pressure protective hood - Google Patents
Positive pressure protective hood Download PDFInfo
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- CN111167033B CN111167033B CN202010131122.XA CN202010131122A CN111167033B CN 111167033 B CN111167033 B CN 111167033B CN 202010131122 A CN202010131122 A CN 202010131122A CN 111167033 B CN111167033 B CN 111167033B
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- 230000001681 protective effect Effects 0.000 title claims abstract description 23
- 230000000007 visual effect Effects 0.000 claims abstract description 24
- 210000001061 forehead Anatomy 0.000 claims abstract description 17
- 210000003128 head Anatomy 0.000 claims abstract description 17
- 238000012806 monitoring device Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 5
- 241000700605 Viruses Species 0.000 abstract description 7
- 206010057190 Respiratory tract infections Diseases 0.000 abstract description 6
- 239000000126 substance Substances 0.000 description 7
- 210000002345 respiratory system Anatomy 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 208000035473 Communicable disease Diseases 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 208000018380 Chemical injury Diseases 0.000 description 1
- 241000711573 Coronaviridae Species 0.000 description 1
- 201000011001 Ebola Hemorrhagic Fever Diseases 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 1
- 208000018569 Respiratory Tract disease Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 206010013781 dry mouth Diseases 0.000 description 1
- 230000002458 infectious effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/10—Respiratory apparatus with filter elements
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
-
- 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
- A62B9/006—Indicators or warning devices, e.g. of low pressure, contamination
-
- 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
- A62B9/02—Valves
- A62B9/022—Breathing demand regulators
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The positive pressure protective hood comprises a hood body, an air duct and an air pressurizing and purifying device, wherein the upper end of the air duct is arranged in the hood body, and the lower end of the air duct is connected with the air pressurizing and purifying device; the head cover body comprises a cover shell, a neck limiting sealing belt, a transparent lower hem, a visual window, a forehead fixing support piece and a top transparent air bag; the lower part of the top surface of the top transparent air bag is hermetically provided with an air pressure stability monitoring device, the air pressure stability monitoring device is a balance weight disc with a color wake-up purpose, and the balance weight disc descends when the air pressure in the air storage chamber is reduced to a certain value; the air pressurizing and purifying device comprises a battery pack, a filter, an exhaust unit and an electric control board; the air inlet of the air draft unit is provided with a filter, and the air outlet is connected with the lower end of the air duct; the electric control board is electrically connected with the battery pack and the exhaust unit. Clean air is injected into the hood by mechanical pressurization, so that virus is prevented from entering respiratory tract infection, and the counterweight disc reliably indicates whether the air pressure in the hood is proper, so that the safety and the comfort are improved.
Description
Technical Field
The invention relates to the field of medical protection articles, in particular to a positive pressure protection hood.
Background
In recent years, along with the progress of society, people have produced living substances and have been greatly enriched, but the life style of human beings and the dining style pursued constantly bring little influence to the transmission of germ, and the global climate is warming year by year to make various infectious germ appear constantly, even appear the new infectious disease that can be transmitted between people through the spray and aerosol. The outbreaks of virulent infectious diseases such as the well known SARS and ebola, and the recent emergence of new coronaviruses, present a significant risk to first-line healthcare workers. At present, the protection of medical staff mainly depends on a mask and a protective glasses, and a protective screen and protective clothing are sometimes added, so that the full-closed chemical protective clothing is extremely used individually. The antichemical clothes can provide comprehensive protection, but is very expensive, complex, time-consuming and uncomfortable to wear and take off, is applicable to protecting phosgene, nuclear radiation dust particles and other physical and chemical injuries (the inside of the antichemical clothes is filled with filtered air, the positive pressure inside is maintained, the skin of the whole body is protected from being contacted with harmful substances, and harmful substances are not inhaled through the respiratory tract), but has the advantages of excessively protecting and even wasting the respiratory tract diseases mainly transmitted by air. Even if a protective screen or a protective suit is added to the mask or the protective glasses, the inhalation of extremely fine pathogens (such as viruses) from the gaps of the mask or the protective glasses cannot be completely avoided, and the transmission paths of aerosols and the like are difficult to block.
In order to solve the technical problems, the positive pressure head cover prevents the spread of diseases transmitted by air and protects people working in polluted air, but the positive pressure head cover is very complex in reality, maintains positive pressure by using airflow with very large flow, has short duration of power supply maintenance, and is uncomfortable for a user to dry mouth and tongue quickly; or the air flow is insufficient, particularly the internal pressure is reduced during inspiration, an accurate barometer is needed to monitor at any time, and the structure is complex. Meanwhile, tidal fluctuation of gas demand in the hood today and challenge to always maintaining internal positive pressure during exhalation and inhalation are also generated, excessive air flow is not easy to lose internal positive pressure but is difficult to blow, the endurance time of equipment is shortened, the monitoring of the adopted real-time barometer is complex and unreliable, and the problem that how to solve the problem that the air supply quantity is basically unchanged, the gas demand greatly fluctuates and the positive pressure is kept at the minimum is solved, so that the problem is difficult to solve on portable equipment in the past.
In view of the above, the present inventors have made intensive studies to solve the above-mentioned drawbacks of the prior art.
Disclosure of Invention
In order to solve the technical problems, we provide a positive pressure protective hood, which can simply and conveniently inject filtered clean air into a relatively airtight hood by mechanical pressurization, so that virus is completely prevented from entering respiratory tract infection, if the air supply amount extracted by an air pump is just enough when a wearer inhales, the air in a gas storage chamber can be smoothly supplemented under the dual actions of air pressure and top air pressure stable monitoring devices for the wearer to inhale, the balance weight disc of the top air pressure stable monitoring device rises when the wearer exhales, and the air in the gas storage chamber increases for the next inhalation. As long as the air storage chamber is not excessively reduced, the counterweight disc does not touch the top of the head, the positive pressure inside the hood can be ensured, external harmful substances are prevented from entering the respiratory tract, and the very obvious indication of whether the air pressure is proper or not can be given by only the gravity of the counterweight disc, so that the air pressure in the hood is indicated to be proper or not very simply and reliably, and the safety and the comfort are improved.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the positive pressure protective hood comprises a hood body, an air duct and an air pressurization and purification device, wherein the upper end of the air duct is arranged in the hood body, and the lower end of the air duct is connected with the air pressurization and purification device;
the head cover body comprises a cover shell, a neck limiting sealing belt, a transparent lower hem, a visual window, a forehead fixing support piece and a top transparent air bag; the cover shell is formed by soft elastic materials, the bottom edge of the cover shell is connected with a transparent lower hem towards the periphery, and a neck limiting sealing belt is arranged at the joint of the transparent lower hem and the cover shell; the front part of the housing is provided with a high-transparency visual window, the housing is upwards expanded and raised above the top of the head of a wearer to form a top transparent air bag made of soft elastic materials, and an air storage chamber is formed in the top transparent air bag; the middle part of the top surface of the top transparent air bag is provided with an air pressure stability monitoring device, the air pressure stability monitoring device is a balance weight disc with a color wake-up purpose, and the air pressure of the balance weight disc in the air storage chamber can be reduced to be smaller than the sum of the external atmospheric pressure and the pressure generated by the gravity of the balance weight disc;
the forehead fixing support piece comprises an arc forehead hoop and an upper supporting Y-pipe, the upper supporting Y-pipe comprises a connecting pipe and two bending pipes, the front ends of the two bending pipes are bent downwards and are forked downwards to be inserted into the arc forehead hoop, and the front surface of the arc forehead hoop is internally stuck and fixed on the inner surface of the housing above the visual window; the rear ends of the two bent pipes are connected with the front ends of connecting pipes in a closing way, and the rear ends of the connecting pipes are connected with the upper ends of the air guide pipes;
the air pressurizing and purifying device comprises a battery pack, a filter and an exhaust unit which are arranged in a containing box, and an electric control plate is arranged at the top of the containing box; the filter is arranged at an air inlet of the air draft unit, and an air outlet of the air draft unit is connected with the lower end of the air duct in a sealing way; the electric control board is electrically connected with the battery pack and the driving motor of the exhaust unit respectively;
the exhaust unit comprises two air pumps and two driving motors, and the two air pumps and the two driving motors are respectively connected in parallel between the filter and the air inlet of the air duct.
The pressure sensor is arranged in the gas storage chamber and is in signal connection with the electric control plate, and can transmit pressure signals sensed in the gas storage chamber to the electric control plate, and the electric control plate controls the driving motor to increase or decrease speed to adjust the air inflow of the filter.
Preferably, the part of the air duct in the housing is attached to the inner surface of the rear side of the housing, and the air duct extends upwards from the rear of one side ear when the air duct is worn by a person.
Preferably, the electric control board is provided with a battery pack low-power detection module, an audible-visual alarm is arranged on one side of the visual window close to the upper side of the visual window, the audible-visual alarm is electrically connected with the electric control board, and the battery pack low-power detection module feeds detection signals back to the electric control board when the battery pack is low in power, and the electric control board drives the audible-visual alarm to work to send audible-visual signals to remind a wearer.
Preferably, the air duct is further provided with a one-way regulating valve above the air inlet end.
Preferably, the electric control board is provided with a wireless communication positioning module, the other side edge of the visual window, which is close to the upper side of the visual window, is provided with a miniature earphone microphone, and the miniature earphone microphone can be interconnected with an external intelligent command system through the wireless communication positioning module by adopting WiFi.
Through the technical scheme, the invention can avoid the tidal wave influence on the air requirement in the hood when a wearer exhales and inhales, so that the internal positive pressure is always maintained in the hood, and the problem that the wearer cannot feel uncomfortable due to the fact that the traditional hood adopts excessive air flow to blow the hood to ensure the internal positive pressure is avoided. The positive pressure protective hood can be used for completely avoiding virus from entering respiratory tract infection by mechanically pressurizing and injecting filtered clean air into the relatively airtight hood more simply and conveniently, is simple and easy to operate and convenient to carry, can greatly prolong the endurance time under the condition of using the same electric quantity as the similar device in the past, and can be applied to other occasions, such as biological laboratories and high-dust workshops. The filtered clean air can be injected into the relatively airtight hood in a relatively simple and convenient manner by mechanical pressurization, so that virus is completely prevented from entering respiratory tract infection, if the air supply amount extracted by the air extractor is just enough when a wearer inhales, the air in the air storage chamber can be smoothly supplemented under the dual actions of the air pressure and the top air pressure stable monitoring device for the inhalation of the wearer, and when the wearer exhales, the internal air pressure rises, the top air pressure stable monitoring device counter weight disc rises, and the air in the air storage chamber is increased for the next inhalation. As long as the air storage chamber is not excessively reduced, the counterweight disc does not touch the top of the head, the positive pressure inside the hood can be ensured to avoid external harmful substances from entering the respiratory tract, and a very obvious indication of whether the air pressure is proper or not can be given by only the gravity of the counterweight disc, when the air pressure is slightly low, a user can feel that the counterweight disc shakes for aggravation by himself or herself, even a colleague at a distance can see that the counterweight disc with striking color is reduced, whether the air pressure in the hood is proper or not is indicated very simply and reliably, and the wearing safety and comfort are improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a view of a state of use of a positive pressure shield hood according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a positive pressure shield hood according to an embodiment of the present invention;
FIG. 3 is a schematic view of a forehead fixing support for a positive pressure protective headgear according to an embodiment of the present invention;
fig. 4 is a view showing a state of use of the positive pressure protective hood according to the embodiment of the present invention when the weight disc is lowered.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
The present invention will be described in further detail with reference to examples and embodiments.
Examples
As shown in fig. 1, 2, 3 and 4, the positive pressure protective hood comprises a hood body, an air duct 1 and an air pressurizing and purifying device, wherein the upper end of the air duct 1 is arranged in the hood body, and the lower end of the air duct 1 is connected with the air pressurizing and purifying device;
the head cover body comprises a housing 2, a neck limiting sealing belt 3, a transparent lower hem 4, a visual window 5, a forehead fixing support piece 6 and a top transparent air bag 7; the housing 2 is made of elastic materials, the bottom edge of the housing is connected with a transparent lower hem 4 towards the periphery, and a neck limiting sealing belt 3 is arranged at the joint of the transparent lower hem 4 and the housing 2; the front part of the housing 2 is provided with a high-transparency visual window 5, the housing 2 is bulged upwards above the top of the head of a wearer to form a top transparent air bag 7, and an air storage chamber is formed in the top transparent air bag 7; the middle part of the top surface of the top transparent air bag 7 is provided with an air pressure stability monitoring device, the air pressure stability monitoring device is a balance weight disc 8 with a color wake-up purpose, and the air pressure in the air storage chamber of the balance weight disc 8 can be reduced to be smaller than the sum of the external atmospheric pressure and the pressure generated by the gravity of the balance weight disc;
the forehead fixing support 6 comprises an arc forehead hoop 61 and an upper supporting furcation tube 62, the upper supporting furcation tube 62 comprises a connecting tube 621 and two bending tubes 622 which are of hollow structures, the front ends of the two bending tubes 622 are bent downwards and are inserted into the arc forehead hoop 61 in a forked way, and the front surface of the arc forehead hoop 61 is fixed on the inner surface of the housing 2 above the visual window 5 in an internal pasting way; the rear ends of the two bending pipes 622 are gathered and connected with the front end of a connecting pipe 621, and the rear end of the connecting pipe 621 is connected with the upper end of the air duct 1;
the air pressurizing and purifying device comprises a battery pack 9, a filter 10 and an exhaust unit 11 which are arranged in a containing box, and an electric control board 12 is arranged at the top of the containing box; the filter 10 is arranged at an air inlet of the air exhaust unit 11, and an air outlet of the air exhaust unit 11 is connected with the lower end of the air duct 1 in a sealing way; the electric control board 12 is electrically connected with the driving motors of the battery pack 9 and the exhaust unit 11 respectively. The battery pack used for the head cover can be powered by a UPS system, is not powered off when the power is replaced, and is provided with a USB interface so as to be charged at any time.
Meanwhile, in order to avoid the unexpected stop of a single air pump and a driving motor, the air suction unit 11 comprises two air pumps and two driving motors, and the two air pumps and the two driving motors are respectively connected in parallel between the filter 10 and the air inlet of the air duct 1, once the unexpected stop of the single air pump or the driving motor occurs, the other air pump or the driving motor can independently work for a period of time. The pressure sensor 13 is arranged in the gas storage chamber, the pressure sensor 13 is in signal connection with the electric control plate 12, and can transmit pressure signals sensed in the gas storage chamber to the electric control plate 12, and the electric control plate 12 controls the driving motor to increase or decrease speed to adjust the air inflow of the filter, so that the air pressure in the gas storage chamber is ensured to be stable for a wearer to use.
In addition, the part of the air duct 1 positioned in the housing 2 is designed and attached to the inner surface of the rear side of the housing 2, and the air duct 1 extends upwards from the rear of one ear when the wearer wears the air duct, so that the wearer can lie down conveniently, and the air duct 1 is prevented from being extruded. The battery pack low-power detection module is arranged on the electric control board 12, the audible-visual window 5 is provided with an audible-visual alarm 14 near one side of the upper side of the visual window, the audible-visual alarm 14 is electrically connected with the electric control board 12, and when the battery pack is low in power, the battery pack low-power detection module feeds detection signals back to the electric control board 12, and the electric control board 12 drives the audible-visual alarm 14 to work to send out audible-visual signals to remind a wearer so as to leave a workplace in time to replace the battery pack or charge.
In order to enable the wearer to manually adjust the air inflow according to the actual use situation, the air duct 1 is further provided with a one-way adjusting valve 15 above the air inlet end.
When this positive pressure protection hood uses in batches in the hospital, can also be equipped with intelligent command control system in the hospital to upgrade this positive pressure protection hood technique, set up wireless communication positioning module on automatically controlled board 12, set up miniature earphone microphone 16 in visual window 5 near its top another side simultaneously, miniature earphone microphone 16 accessible wireless communication positioning module adopts wiFi and outside intelligent command system interconnection, so that outside command center can in time know the position that the person of wearing is located, equipment operating condition such as fan or exchange matters, also can remind the person of wearing to the service condition of protection hood by the manual work, and the person of wearing has emergency also can report to command center simultaneously.
Because this malleation hood top is equipped with top transparent gasbag 7, as its gas receiver that adjusts the air current only depends on inside atmospheric pressure to set up the obvious counter weight disc 8 of colour at the top, can provide extra air feed through the compression gas receiver of counter weight disc 8 during inspiration, supplement gas receiver tolerance during expiration. As long as the balance weight disc 8 does not touch the top of the head, the positive pressure in the hood can be ensured, meanwhile, the height of the air storage chamber and the balance weight disc 8 is also a reliable indication of the internal air pressure, if the height is too low, the air supply amount can be increased by adjusting the one-way regulating valve 15 after checking the gap of the neck and removing the problem of too large gap. If the height of the air reservoir and the weighted disc 8 is not changed at all during breathing, indicating too much air supply, the one-way regulator 15 can be properly adjusted to reduce the amount of air supply to improve comfort and extend battery life.
In this case, the invention can avoid the tidal wave influence on the air demand in the hood when the wearer exhales and inhales, so that the internal positive pressure in the hood is always maintained, and the wearer cannot feel uncomfortable by adopting excessive air flow to blow the hood to ensure the internal positive pressure in the hood like the prior art. The positive pressure protective hood can be used for injecting filtered clean air into the relatively airtight hood in a relatively simple and convenient manner by mechanical pressurization, so that virus is completely prevented from entering respiratory tract infection, the whole head is prevented from being polluted (including eyes and auditory meatus, even inconvenience of frequent hair washing or timely shaving is avoided), simplicity and easiness in implementation and convenience in carrying are realized, the device can be used for greatly prolonging the endurance time under the condition of using the same electric quantity as that of the traditional similar device, and the device can be applied to other occasions such as a biological laboratory and a high-dust workshop. The filtered clean air can be injected into the relatively airtight hood in a relatively simple and convenient manner by mechanical pressurization, so that virus is completely prevented from entering respiratory tract infection, if the air supply amount extracted by the air extractor group 11 is just enough when a wearer inhales, the air in the air storage chamber can be smoothly supplemented under the dual actions of the air pressure and the top air pressure stable monitoring device for the wearer to inhale, and the internal air pressure rises when the wearer exhales, the top air pressure stable monitoring device counter weight disc 8 rises and the air in the air storage chamber increases for the next inhalation. As long as the space in the gas storage chamber is not excessively reduced, the counterweight disc 8 does not touch the top of the head, the positive pressure in the head cover can be ensured to prevent external harmful substances from entering the respiratory tract, and a very obvious indication of whether the air pressure is proper or not can be given only by the gravity of the counterweight disc 8, even a colleague at a distance can see that the counterweight disc 8 with striking color is reduced, and whether the air pressure in the head cover is proper or not can be indicated very simply and reliably. When in actual use, the accommodating box can be fixed on the waistband 17 of a wearer, so that the battery pack 9, the filter 10 and the exhaust unit 11 in the accommodating box and the electric control plate 12 at the top of the accommodating box can be fixed on the waist by the wearer, thereby being convenient for the wearer to move and wear, avoiding the influence of the wearer during working, and greatly improving the wearing safety and comfort.
While only one preferred embodiment of the positive pressure shield of the present invention has been described, it should be noted that variations and modifications can be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. The positive pressure protective hood is characterized by comprising a hood body, an air duct and an air pressurizing and purifying device, wherein the upper end of the air duct is arranged in the hood body, and the lower end of the air duct is connected with the air pressurizing and purifying device;
the head cover body comprises a cover shell, a neck limiting sealing belt, a transparent lower hem, a visual window, a forehead fixing support piece and a top transparent air bag; the cover shell is made of elastic materials, the bottom edge of the cover shell is connected with a transparent lower hem towards the periphery, and a neck limiting sealing belt is arranged at the joint of the transparent lower hem and the cover shell; the front part of the housing is provided with a high-transparency visual window, the housing is upwards expanded and raised above the top of the head of a wearer to form a top transparent air bag made of soft elastic materials, and an air storage chamber is formed in the top transparent air bag; the middle part of the top surface of the top transparent air bag is provided with an air pressure stability monitoring device, the air pressure stability monitoring device is a balance weight disc with a color wake-up purpose, and the air pressure of the balance weight disc in the air storage chamber can be reduced to be smaller than the sum of the external atmospheric pressure and the pressure generated by the gravity of the balance weight disc;
the forehead fixing support piece comprises an arc forehead hoop and an upper supporting Y-pipe, the upper supporting Y-pipe comprises a connecting pipe and two bending pipes, the front ends of the two bending pipes are bent downwards and are forked downwards to be inserted into the arc forehead hoop, and the front surface of the arc forehead hoop is internally stuck and fixed on the inner surface of the housing above the visual window; the rear ends of the two bent pipes are connected with the front ends of connecting pipes in a closing way, and the rear ends of the connecting pipes are connected with the upper ends of the air guide pipes;
the air pressurizing and purifying device comprises a battery pack, a filter and an exhaust unit which are arranged in a containing box, and an electric control plate is arranged at the top of the containing box; the filter is arranged at an air inlet of the air draft unit, and an air outlet of the air draft unit is connected with the lower end of the air duct in a sealing way; the electric control board is electrically connected with the battery pack and the driving motor of the exhaust unit respectively;
the exhaust unit comprises two air pumps and two driving motors, and the two air pumps and the two driving motors are respectively connected in parallel between the filter and the air inlet of the air duct;
the pressure sensor is arranged in the gas storage chamber and is in signal connection with the electric control plate, and can transmit pressure signals sensed in the gas storage chamber to the electric control plate, and the electric control plate controls the driving motor to increase or decrease speed to adjust the air inflow of the filter.
2. A positive pressure protective headgear according to claim 1, wherein the portion of the airway located within the housing is fitted to the inner surface of the housing on one side thereof and extends upwardly from behind the one side ear when worn by a person.
3. The positive pressure protective hood according to claim 2, wherein the electric control board is provided with a battery pack low-power detection module, an audible and visual alarm is arranged on one side of the visual window close to the upper side of the visual window, the audible and visual alarm is electrically connected with the electric control board, and the battery pack low-power detection module feeds back detection signals to the electric control board when the battery pack is low-power, and the electric control board drives the audible and visual alarm to work to send out audible and visual signals to remind a wearer.
4. A positive pressure protective headgear according to claim 3, wherein the air conduit is further provided with a one-way regulator valve above the air inlet end.
5. The positive pressure protective hood according to claim 4, wherein the electric control board is provided with a wireless communication positioning module, the other side edge of the visual window, which is close to the upper side of the visual window, is provided with a micro-earphone microphone, and the micro-earphone microphone can be interconnected with an external intelligent command system through the wireless communication positioning module by adopting WiFi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010131122.XA CN111167033B (en) | 2020-02-28 | 2020-02-28 | Positive pressure protective hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010131122.XA CN111167033B (en) | 2020-02-28 | 2020-02-28 | Positive pressure protective hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111167033A CN111167033A (en) | 2020-05-19 |
| CN111167033B true CN111167033B (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010131122.XA Active CN111167033B (en) | 2020-02-28 | 2020-02-28 | Positive pressure protective hood |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603698A (en) * | 2020-06-16 | 2020-09-01 | 中国人民解放军总医院 | A kind of protective headgear and protective method worn when disposing chemotherapeutic drugs |
| CN111616459B (en) * | 2020-06-30 | 2025-01-10 | 上海市公共卫生临床中心 | A split type intelligent cooling protective hood |
| CN112107049A (en) * | 2020-08-02 | 2020-12-22 | 应急管理部上海消防研究所 | Multifunctional fire-fighting epidemic-prevention rainproof on-duty protective clothing and performance test method |
| CN112107041A (en) * | 2020-08-02 | 2020-12-22 | 应急管理部上海消防研究所 | Reusable fire-fighting epidemic-prevention rainproof on-duty protective clothing and reusable method |
| CN112516479B (en) * | 2020-11-30 | 2022-03-08 | 上海医盾医疗科技有限公司 | Inflatable support head frame and respirator hood |
| CN112773014A (en) * | 2021-02-25 | 2021-05-11 | 新乡市畅达医疗器械有限公司 | Medical double-layer isolation positive pressure protective clothing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100358448C (en) * | 2003-07-11 | 2008-01-02 | 中国人民解放军总装备部防化军事代表局 | Positive pressuring type head protecting cover |
| CN201064629Y (en) * | 2007-07-25 | 2008-05-28 | 周会 | Dust-proof positive pressure sealing head cover |
| CN104383649B (en) * | 2014-12-09 | 2017-05-17 | 中国人民解放军军事医学科学院卫生装备研究所 | Positive-pressure biological protection hood |
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