CN213789670U - Double positive pressure ventilation head cover - Google Patents
Double positive pressure ventilation head cover Download PDFInfo
- Publication number
- CN213789670U CN213789670U CN202020417868.2U CN202020417868U CN213789670U CN 213789670 U CN213789670 U CN 213789670U CN 202020417868 U CN202020417868 U CN 202020417868U CN 213789670 U CN213789670 U CN 213789670U
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- air inlet
- hood
- cover
- fan
- fan module
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- 238000009423 ventilation Methods 0.000 title claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 30
- 230000001681 protective effect Effects 0.000 claims abstract description 18
- 239000000853 adhesive Substances 0.000 claims description 16
- 230000001070 adhesive effect Effects 0.000 claims description 16
- 229920000742 Cotton Polymers 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 5
- 210000000056 organ Anatomy 0.000 claims description 5
- 230000009977 dual effect Effects 0.000 claims 9
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 241000700605 Viruses Species 0.000 abstract description 2
- 239000000443 aerosol Substances 0.000 abstract description 2
- 230000009545 invasion Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 230000000241 respiratory effect Effects 0.000 abstract description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000001815 facial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model relates to a double positive pressure ventilation hood, which comprises a hood, a shoulder protective cover, an air inlet system and a filter opening, wherein the hood is a spherical cover or a cylindrical cover and consists of an observation cover with transparent front side and a shading cover with opaque rear side, and the top of the hood is provided with a head hoop; the shoulder protective cover is an annular structure connected below the head cover, and an elastic hoop is arranged between the head cover and the shoulder protective cover; the air inlet system comprises an upper air inlet system and a lower air inlet system; the filtering port is arranged at the lower part of the observation cover. The utility model has the advantages that: the headgear adopts the positive pressure ventilation principle to eliminate the drawback of unsmooth ventilation, avoids air leakage of the nose and the cheek, solves the protection problem of covering the part above the neck of a human body, prevents PM2.5 and small particle aerosol existing in the air, effectively prevents the invasion of viruses, and protects the respiratory safety of a user.
Description
Technical Field
The utility model belongs to daily protection field especially relates to a two malleation hood of ventilating.
Background
In the face of respiratory diseases with extremely high infectivity, the mask is worn in the existing protection mode, various masks with different protection grades are widely used for protection in public places, facial indentations are easily generated after the mask is worn for a long time, the mask is worn outdoors for a long time and can be irradiated by sunlight, and the trace of facial pigment change is caused by blowing of wind, particularly, the mask is worn in summer and is hot and hard to endure, the simple mask is low in protection grade and cannot be protected comprehensively, and when the mask is really contacted with a carrier with high transmissibility, the mask has higher danger.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a double positive pressure ventilation hood, which integrates the functions of a mask, goggles and the like.
The utility model adopts the technical proposal that: a double positive pressure ventilation hood comprises a hood body,
the head cover, the spherical cover or the cylindrical cover consists of an observation cover with a transparent front side and a light shading cover with an opaque rear side;
a shoulder shield connected to the ring structure below the head cover;
the air inlet system comprises an air inlet, an air inlet pipe and a fan module, the air inlet pipe is connected with the air inlet and the fan module, the air inlet is arranged on the hood and penetrates through the hood, and the fan module comprises a fan and a power supply module connected with the fan; the air inlet system comprises an upper air inlet system and a lower air inlet system;
and the filter port is arranged at the lower part of the observation cover.
Preferably, the upper air inlet system comprises an upper air inlet, an upper air inlet pipe and an upper fan module, the upper air inlet pipe is connected with the upper air inlet and the upper fan module, the upper air inlet is arranged on the hood and penetrates through the hood, and the upper fan module comprises an upper fan and an upper power module connected with the upper fan;
the lower air inlet system comprises a lower air inlet, a lower air inlet pipe and a lower fan module, the lower air inlet pipe is connected with the lower air inlet and the lower fan module, the lower air inlet is arranged on the head cover and penetrates through the head cover, and the lower fan module comprises a lower fan and a lower power supply module connected with the lower fan;
the upper air inlet is arranged at the upper part of the light shield, and the lower air inlet is arranged at the lower part of the light shield.
Preferably, the upper fan module is disposed in the upper air intake housing and the lower fan module is disposed in the lower air intake housing;
or the upper fan module and the lower fan module are arranged in the same air inlet shell.
Preferably, a fixing plate is fixedly arranged on the shoulder shield, and an adhesive plate is arranged on the air inlet shell and can be adhered to the fixing plate.
Preferably, a bandage fixing belt is also arranged,
the upper air inlet shell and the lower air inlet shell are provided with adhesive plates which can be adhered and fixed on the bandage fixing belt;
or the air inlet shell is provided with an adhesive plate which can be adhered to the bandage fixing belt.
Preferably, a fixing groove is fixedly arranged at the rear side of the hood, and the upper air inlet pipe penetrates through the fixing groove.
Preferably, the upper and lower inlet ducts are accordion ducts.
Preferably, a resilient band is provided between the hood and the shoulder shield.
Preferably, the top of the hood is provided with a head band which is a hard circular ring or an upward concave cambered plate.
Preferably, the filtering port is provided with a vent valve, a filtering layer made of filtering paper or filtering cotton or a composite filtering layer made of overlapping multiple layers of filtering paper and filtering cotton is fixedly arranged on the inner side of the vent valve, and an N95 filtering sheet is movably arranged on the outer side.
The utility model has the advantages and positive effects that: the head cover integrates the functions of a mask, goggles and the like, and simultaneously has the effect of protecting the hair style; the front part of the hood part is transparent, the back part is shaded, the hood-shaped mask is convenient to wear, the shoulder protective cover covers the shoulders of a wearer, the protection range is increased, the whole head is covered, tear marks generated when the mask is used are avoided, the space is large, and the mask is free;
the rear part is provided with an air inlet system which is used for inflating the mask range to facilitate the breathing of a wearer, the front part is provided with a filter opening to facilitate the breathing, and the mask combines active breathing and passive breathing and is suitable for various crowds; compared with the traditional hood, the air inlet structure, namely the upper air inlet system, is added, the structural pipeline of the upper air inlet system is hidden and tightly attached to the surface of the hood to play a role in cooling, and particularly is applied to summer, and the lower air inlet structure mainly plays a role in air exchange;
the headgear adopts the positive pressure ventilation principle to eliminate the drawback of unsmooth ventilation, avoids air leakage of the nose and the cheek, solves the protection problem of covering the part above the neck of a human body, prevents PM2.5 and small particle aerosol existing in the air, effectively prevents the invasion of viruses, and protects the respiratory safety of a user.
Drawings
Fig. 1 is a schematic front view of an embodiment of the present invention;
fig. 2 is a schematic view of a back structure of an embodiment of the present invention;
fig. 3 is a schematic view of a back structure of an embodiment of the present invention;
fig. 4 is a schematic view of a back structure of an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a vent valve according to an embodiment of the present invention.
In the figure:
1. head cover 11, observation cover 12 and light shield
13. Head hoop 2, shoulder protective cover 3, elastic hoop
4. Filter port 51, upper inlet port 52, upper inlet pipe
53. Upper air inlet casing 54, fixing groove 61, lower air inlet
62. Lower air inlet pipe 63, lower air inlet shell 71 and air inlet shell
72. Adhesive plate 73, fixing plate 74, and band fixing band
81. Vent valve 82, outer end cap 83, filter layer
84. N95 filter disc
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 1, the utility model relates to a double positive pressure ventilation hood 1, including hood 1, shoulder protection casing 2, air intake system and filter 4, hood 1 is spherical cover or cylindricality cover, can cover the person's head, comprises transparent observation cover 11 of front side and opaque lens hood 12 of rear side, and observation cover 11 covers the person's face or only covers the person's eye of wearing, makes things convenient for the vision, specifically can adopt transparent PU material, and lens hood 12 covers all the other positions, has the sun-proof effect of shading when protecting; the shoulder protective cover 2 is of an annular structure connected below the head cover 1, can cover the shoulder and neck of a wearer, and can be made of shading waterproof soft materials. In order to increase the isolation effect, an elastic band 3, which may be a stretch cord or a drawstring structure, is provided between the hood 1 and the shoulder shield 2, so that the double positive pressure ventilation hood 1 can be fastened to the neck of the wearer. Because hood 1 is made by soft material, probably there is collapse or deformation, influences the sight, and the laminating wearer skin also can cause the discomfort, so can be equipped with head band 13 at hood 1 top for prop up hood 1, reduce the area of contact of wearer's head and hood 1, head band 13 is the ring of stereoplasm or the cambered plate of upwards sunken, can overlap at the wearer's top of the head.
The air inlet system is used for conveying air into the hood 1 and comprises an air inlet, an air inlet pipe and a fan module, the air inlet pipe is connected with the air inlet and the fan module, the air inlet is a hard PVC connector and is arranged on the hood 1 and penetrates through the hood 1, the air inlet is communicated with the air inlet pipe and is communicated with the range in the hood 1, the fan module comprises a fan and a power supply module connected with the fan, the fan is driven by the power supply module to ventilate the hood 1 through the air inlet pipe, and the fan can adopt a micro air input pump, such as a WPD27 series micro air pump; the front side of the hood 1 is provided with a filter opening 4 which is specifically arranged at the lower part of the observation cover 11 and corresponds to the mouth and nose positions of a wearer. The positive pressure ventilation of the headgear is realized through the air inlet system and the filtering port 4, and the defect of unsmooth ventilation is overcome. Wherein the air pump can also be set to input air to operate in three stages S, M and L, the noise is low, and the mute index is less than 30db (0.5 m); the air quantity/air speed is adjusted to 5-7 cubic meters/hour; when the pump is operated, gas enters and is filtered by adopting an international standard folding filter element, the gas can reach more than 99.7 percent, a high-efficiency HEPA net is adopted for purification, three layers of medical filtering melt-spraying cloth are added at the bottom, the protection level is beyond KN95, and the filter screen can be replaced; the power supply adopts output voltage/current: 5V1A battery capacity: 2100 mah; executing standard permission: GB/T18801-2015.
To further increase the comfort of the wearer, the air intake system may comprise an upper air intake system for ventilating and cooling, relieving suffocated high temperatures, and a lower air intake system for providing fresh air, as shown in fig. 2-4; specifically, the upper air inlet system comprises an upper air inlet 51, an upper air inlet pipe 52 and an upper fan module, the upper air inlet pipe 52 is connected with the upper air inlet 51 and the upper fan module, the upper air inlet 51 is arranged on the hood 1 and penetrates through the hood 1, and the upper fan module comprises an upper fan and an upper power module connected with the upper fan; the lower air inlet system comprises a lower air inlet 61, a lower air inlet pipe 62 and a lower fan module, the lower air inlet pipe 62 is connected with the lower air inlet 61 and the lower fan module, the lower air inlet 61 is arranged on the hood 1 and penetrates through the hood 1, and the lower fan module comprises a lower fan and a lower power supply module connected with the lower fan. The upper intake 51 is provided at the upper portion of the hood 12, and the lower intake 61 is provided at the lower portion of the hood 12.
In order to fix the fan module, the fan and the power supply module can be arranged in the same shell, and then the fan module is fixed on the shoulder shield 2 or the protective clothing and worn with the user. The upper fan module is arranged in the upper air inlet housing 53, and the lower fan module is arranged in the lower air inlet housing 63; or the upper fan module and the lower fan module are arranged in the same air inlet shell 71, so that the pipeline winding is avoided, and the operation is inconvenient.
The shoulder guard 2 is fixedly provided with a fixing plate 73, the air inlet casing 71 is provided with an adhesive plate 72, the adhesive plate 72 can be adhered to the fixing plate 73, the fixing plate 73 and the adhesive plate 72 can be two sides of a magic tape, and the air inlet casing 71 is adhered to the fixing plate 73 during use. Or when adopting two fan modules, because there is weight, it is heavier to glue on the shoulder guard 2, just can choose to wear on one's body, specifically can be equipped with in addition bandage fixed band 74, can tie up on the waist or on the arm through the bandage structure, go up air inlet housing 53, can be equipped with on lower air inlet housing 63 and the air inlet housing 71 and paste the board 72, paste board 72 and bandage fixed band 74 main part and be the two sides of magic subsides, paste the board 72 and can paste and fix on bandage fixed band 74 to fix last air inlet housing 53 and lower air inlet housing 63 or air inlet housing 71 on bandage fixed band 74. Alternatively, a fixing pocket may be provided in the strap fixing band 74, and the upper intake casing 53 and the lower intake casing 63 or the intake casing 71 may be inserted into the fixing pocket as long as the upper intake casing 53 and the lower intake casing 63 or the intake casing 71 can be fixed. In order to conveniently and flexibly place the upper fan module and the lower fan module which are provided with the upper air inlet shell 53 and the lower air inlet shell 63 or arranged in the air inlet shell 71, the upper air inlet pipe 52 and the lower air inlet pipe 62 can be organ pipes, so that the upper air inlet pipe and the lower air inlet pipe can be conveniently extended, shortened or bent to adapt to the situation that the upper fan module and the lower fan module are placed at different positions. In addition, a fixing groove 54 is fixedly arranged at the rear side of the head cover 1, and the upper air inlet pipe 52 passes through the fixing groove 54, so that the pipeline is hidden and tightly attached to the surface of the head cover 1.
The filter opening 4 is provided with a vent valve 81, as shown in fig. 5, a filter layer 83 made of filter paper or filter cotton or a composite filter layer made of multiple layers of filter paper and filter cotton are fixedly arranged on the inner side of the vent valve 81, an N95 filter sheet 84 is movably arranged on the outer side, the filter layer 83 or the composite filter layer is clamped on the inner wall of the cylindrical vent valve, a round N95 filter sheet 84 is arranged between the outer side and a detachable outer end cover 82 of the vent valve 81, and the N95 filter sheet 84 can be replaced according to the use duration.
The utility model discloses in some embodiments, hood 1, shoulder protection casing 2 and go up fixed breather valve, air inlet and intake pipe and be disposable consumptive material, fan module used repeatedly after can disinfecting, can avoid cross infection promptly like this, guarantees the aseptic condition of two malleation air-permeable hood 1, can effective reduce cost again, makes it can large-scale production, popularization and use.
Example 1:
the double-positive-pressure ventilation hood 1 comprises a hood 1, a shoulder protective cover 2, an air inlet system and a filtering port 4, the hood 1 is a spherical cover and consists of an observation cover 11 with a transparent front side and a light shading cover 12 with an opaque rear side, a head band 13 is arranged at the top of the hood 1, and the head band 13 is a hard circular ring; the shoulder protective cover 2 is of an annular structure connected below the head cover 1, and an elastic hoop 3 is arranged between the head cover 1 and the shoulder protective cover 2; as shown in fig. 2, the air intake system includes an upper air intake system and a lower air intake system, the upper air intake system includes an upper air inlet 51, an upper air inlet 52 and an upper blower module, the upper air inlet 52 connects the upper air inlet 51 and the upper blower module, the upper air inlet 51 is arranged on the hood 1 and penetrates through the hood 1, and the upper blower module includes an upper blower and an upper power module connected to the upper blower; the lower air inlet system comprises a lower air inlet 61, a lower air inlet pipe 62 and a lower fan module, the lower air inlet pipe 62 is connected with the lower air inlet 61 and the lower fan module, the lower air inlet 61 is arranged on the hood 1 and penetrates through the hood 1, and the lower fan module comprises a lower fan and a lower power supply module connected with the lower fan; the upper air inlet 51 is arranged at the upper part of the light shield 12, and the lower air inlet 61 is arranged at the lower part of the light shield 12; the upper fan module and the lower fan module are arranged in the same air inlet shell 71, the upper air inlet pipe 52 and the lower air inlet pipe 62 are organ pipes, a fixing plate 73 is fixedly arranged on the shoulder shield 2, an adhesive plate 72 is arranged on the air inlet shell 71, and the adhesive plate 72 can be adhered to the fixing plate 73.
The filtering port 4 is provided with a vent valve 81, a filtering layer made of filtering paper or filtering cotton is fixedly arranged on the inner side of the vent valve 81, and an N95 filtering sheet 84 is movably arranged on the outer side.
Example 2:
the double-positive-pressure ventilation hood 1 comprises a hood 1, a shoulder protective cover 2, an air inlet system and a filtering port 4, the hood 1 is a cylindrical cover and consists of an observation cover 11 with a transparent front side and a shading cover 12 with an opaque rear side, a head band 13 is arranged at the top of the hood 1, and the head band 13 is an upwards-concave cambered plate; the shoulder protective cover 2 is of an annular structure connected below the head cover 1, and an elastic hoop 3 is arranged between the head cover 1 and the shoulder protective cover 2; as shown in fig. 3, the air intake system includes an upper air intake system and a lower air intake system, the upper air intake system includes an upper air inlet 51, an upper air inlet 52 and an upper blower module, the upper air inlet 52 connects the upper air inlet 51 and the upper blower module, the upper air inlet 51 is arranged on the hood 1 and penetrates through the hood 1, and the upper blower module includes an upper blower and an upper power module connected to the upper blower; the lower air inlet system comprises a lower air inlet 61, a lower air inlet pipe 62 and a lower fan module, the lower air inlet pipe 62 is connected with the lower air inlet 61 and the lower fan module, the lower air inlet 61 is arranged on the hood 1 and penetrates through the hood 1, and the lower fan module comprises a lower fan and a lower power supply module connected with the lower fan; the upper air inlet 51 is arranged at the upper part of the light shield 12, and the lower air inlet 61 is arranged at the lower part of the light shield 12; the upper air blower module and the lower air blower module are arranged in the same air inlet shell 71, the upper air inlet pipe 52 and the lower air inlet pipe 62 are organ pipes, a binding belt fixing band 74 is further arranged, an adhesive plate 72 is arranged on the air inlet shell 71, and the adhesive plate 72 can be fixedly adhered to the binding belt fixing band 74.
The filtering port 4 is provided with a vent valve 81, a filtering layer made of filtering paper or filtering cotton is fixedly arranged on the inner side of the vent valve 81, and an N95 filtering sheet 84 is movably arranged on the outer side.
Example 3:
the double-positive-pressure ventilation hood 1 comprises a hood 1, a shoulder protective cover 2, an air inlet system and a filtering port 4, the hood 1 is a cylindrical cover and consists of an observation cover 11 with a transparent front side and a shading cover 12 with an opaque rear side, a head band 13 is arranged at the top of the hood 1, and the head band 13 is an upwards-concave cambered plate; the shoulder protective cover 2 is of an annular structure connected below the head cover 1, and an elastic hoop 3 is arranged between the head cover 1 and the shoulder protective cover 2; as shown in fig. 4, the air intake system includes an upper air intake system and a lower air intake system, the upper air intake system includes an upper air inlet 51, an upper air inlet 52 and an upper blower module, the upper air inlet 52 connects the upper air inlet 51 and the upper blower module, the upper air inlet 51 is arranged on the hood 1 and penetrates through the hood 1, and the upper blower module includes an upper blower and an upper power module connected to the upper blower; the lower air inlet system comprises a lower air inlet 61, a lower air inlet pipe 62 and a lower fan module, the lower air inlet pipe 62 is connected with the lower air inlet 61 and the lower fan module, the lower air inlet 61 is arranged on the hood 1 and penetrates through the hood 1, and the lower fan module comprises a lower fan and a lower power supply module connected with the lower fan; the upper air inlet 51 is arranged at the upper part of the light shield 12, and the lower air inlet 61 is arranged at the lower part of the light shield 12; the upper air inlet module is arranged in the upper air inlet shell 53, the lower air inlet module is arranged in the lower air inlet shell 63, the upper air inlet pipe 52 and the lower air inlet pipe 62 are organ pipes, the upper air inlet shell 53 and the lower air inlet shell 63 are provided with adhesive plates 72, and the bandage fixing bands 74 are further arranged, and the adhesive plates 72 can be adhered and fixed on the bandage fixing bands 74.
The filtering port 4 is provided with a vent valve 81, a composite filtering layer which is formed by overlapping a plurality of layers of filtering paper and filtering cotton is fixedly arranged on the inner side of the vent valve 81, and an N95 filtering sheet 84 is movably arranged on the outer side.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (10)
1. Two positive pressure ventilation hood, its characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the head cover, the spherical cover or the cylindrical cover consists of an observation cover with a transparent front side and a light shading cover with an opaque rear side;
a shoulder shield connected to the ring structure below the hood;
the air inlet system comprises an air inlet, an air inlet pipe and a fan module, the air inlet pipe is connected with the air inlet and the fan module, the air inlet is arranged on the hood and penetrates through the hood, and the fan module comprises a fan and a power supply module connected with the fan; the air inlet system comprises an upper air inlet system and a lower air inlet system; the fan is a miniature air input pump, and air enters the folding filter element adopting the international standard for filtration when the air pump operates;
and the filter port is arranged at the lower part of the observation cover.
2. The dual positive airway pressure hood of claim 1 wherein: the upper air inlet system comprises an upper air inlet, an upper air inlet pipe and an upper fan module, the upper air inlet pipe is connected with the upper air inlet and the upper fan module, the upper air inlet is arranged on the hood and penetrates through the hood, and the upper fan module comprises an upper fan and an upper power module connected with the upper fan;
the lower air inlet system comprises a lower air inlet, a lower air inlet pipe and a lower fan module, the lower air inlet pipe is connected with the lower air inlet and the lower fan module, the lower air inlet is arranged on the hood and penetrates through the hood, and the lower fan module comprises a lower fan and a lower power supply module connected with the lower fan;
the upper air inlet is arranged at the upper part of the light shield, and the lower air inlet is arranged at the lower part of the light shield.
3. The dual positive airway pressure hood of claim 2 wherein: the upper fan module is arranged in the upper air inlet shell, and the lower fan module is arranged in the lower air inlet shell;
or the upper fan module and the lower fan module are arranged in the same air inlet shell.
4. The dual positive airway pressure hood of claim 3 wherein: the shoulder protective cover is fixedly provided with a fixing plate, the air inlet shell is provided with a pasting plate, and the pasting plate can be pasted on the fixing plate.
5. The dual positive airway pressure hood of claim 3 wherein: the air inlet device is characterized by also comprising a bandage fixing belt, wherein the upper air inlet shell and the lower air inlet shell are provided with adhesive plates, and the adhesive plates can be adhered and fixed on the bandage fixing belt;
or the air inlet shell is provided with an adhesive plate which can be adhered to the bandage fixing belt.
6. The dual positive airway pressure hood of claim 3 wherein: a fixing groove is fixedly formed in the rear side of the head cover, and the upper air inlet pipe penetrates through the fixing groove.
7. The dual positive airway pressure hood of any of claims 2-6 wherein: the upper air inlet pipe and the lower air inlet pipe are organ pipes.
8. The dual positive airway pressure hood of any of claims 1-6 wherein: an elastic hoop is arranged between the head cover and the shoulder protective cover.
9. The dual positive airway pressure hood of any of claims 1-6 wherein: the top of the head cover is provided with a head band which is a hard circular ring or an upward concave cambered plate.
10. The dual positive airway pressure hood of any of claims 1-6 wherein: the filter opening is provided with a vent valve, the inner side of the vent valve is fixedly provided with a filter layer made of filter paper or filter cotton or a composite filter layer made of a plurality of layers of filter paper and filter cotton in an overlapping mode, and the outer side of the vent valve is movably provided with an N95 filter sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020417868.2U CN213789670U (en) | 2020-03-27 | 2020-03-27 | Double positive pressure ventilation head cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020417868.2U CN213789670U (en) | 2020-03-27 | 2020-03-27 | Double positive pressure ventilation head cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213789670U true CN213789670U (en) | 2021-07-27 |
Family
ID=76930358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020417868.2U Expired - Fee Related CN213789670U (en) | 2020-03-27 | 2020-03-27 | Double positive pressure ventilation head cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213789670U (en) |
-
2020
- 2020-03-27 CN CN202020417868.2U patent/CN213789670U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210727 |