CN114712741B

CN114712741B - Cap type air curtain mask

Info

Publication number: CN114712741B
Application number: CN202210403217.1A
Authority: CN
Inventors: 马越; 孙程绪; 倪玺杰; 李海鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2023-08-11
Anticipated expiration: 2042-04-18
Also published as: CN114712741A

Abstract

The invention relates to the technical field of masks, in addition, a cap-type air curtain mask comprises two air pumps, wherein the output ends of the two air pumps are communicated with Laval pipes, an air knife is communicated between the two Laval pipes, a guide air tap for air outlet is arranged below the air knife, a rectifying structure is arranged inside the air knife, an elastic clamp which is clamped with the air knife is arranged on the outer side of the air knife, the elastic clamp is used for clamping with the cap brim of a hat, air flow input by the air pump is accelerated by the Laval pipes and the air knife, an air curtain is formed by the guide air tap, the air curtain is in clearance fit with the human face, and a power supply module is arranged on the inner side of the elastic clamp.

Description

Cap type air curtain mask

Technical Field

The invention relates to the field of masks, in particular to a cap type air curtain mask.

Background

The mask is a sanitary article, and is generally worn on the mouth and nose to filter air entering the mouth and nose so as to achieve the effect of blocking harmful gases, smell, spray, viruses and other substances, and is made of gauze or paper and other materials. The mask has a certain filtering effect on air entering the lung, and has a very good effect when the mask is worn when the mask works in environments polluted by dust and the like during the flow of respiratory infectious diseases; the mask may be classified into an air filtering type mask and an air supplying type mask.

The existing mask wearing mode is mostly ear wearing type, head wearing type and neck wearing type, the outline structure of the mask mainly comprises a flat plate type, a folding type, a cup type and the like, the ventilation structure of the mask is ventilated through an initial gap, the ventilation structure of the mask is developed into a breather valve to ventilate, a miniature fan is utilized for supplying air and the like, but the problems that the breathing of a wearer is unsmooth are caused due to the fact that the traditional masks are all close to the nose and the mouth are all arranged, so that the existing wearable air purifier is mainly in a rope hanging type, a mask type and a head wearing type, the existing wearable air purifier is slightly abrupt when worn, meanwhile, the size is large, the portable air purifier is inconvenient to carry, the selling price is high, the user experience is poor, most of air flows of the existing wearable air purifier are not gathered sufficiently, the generated clean air is easily interfered by the outside, the actually utilized air quantity is small, and the effect of replacing the mask cannot be truly achieved.

The inventors considered that the above-described drawbacks exist with respect to the related art among the above.

Disclosure of Invention

In order to solve the problems, the invention provides a cap type air curtain mask.

The cap type air curtain mask provided by the invention adopts the following technical scheme:

the cap type air curtain mask comprises two air pumps, wherein the output ends of the two air pumps are respectively communicated with Laval pipes, an air knife is communicated between the two Laval pipes, a guide air nozzle used for air outlet is arranged below the air knife, a rectifying structure is arranged inside the air knife, an elastic clamp which is clamped with the air knife is arranged on the outer side of the air knife, the elastic clamp is used for clamping a cap peak of a cap, air flow input by the air pumps is accelerated by the Laval pipes and the air knife, an air curtain is formed by the guide air nozzle, the air curtain is in clearance fit with a human face, the radius of an inlet of the Laval pipes is 3mm, the radius of a throat is 1.2mm, the radius of an outlet is 2.45mm, the length of a contracted section is 13.2mm, the length of an expanded section is 92.4mm, the pipe wall thickness is 0.5mm, a detachable graphene filtering membrane is arranged at the input end of the air pump, and a power supply module is arranged on the inner side of the elastic clamp.

Preferably, the rectification structure inside the air knife comprises a first chamber, a second chamber and an outer chamber, wherein the first chamber, the second chamber and the outer chamber are sequentially arranged from inside to outside, two adjacent chambers in the first chamber, the second chamber and the outer chamber are all communicated, a partition board with a longitudinal section of a C-shaped structure is arranged between the two adjacent chambers in the first chamber, the second chamber and the outer chamber, openings of the two partition boards are oppositely arranged, and the opening of the partition board between the first chamber and the second chamber is arranged towards the guide air tap.

Preferably, the calculation formula of the contraction section of the Laval pipe is as follows:the calculation formula of the expansion section is as follows: />

The output pressure of the air pump is 0.06MPa.

Preferably, the elastic clamp is of a C-shaped structure in overlook view, a through groove is formed in the center line position of the C-shaped structure, rubber magnets are embedded in the upper side and the lower side of the through groove, a clamping groove is fixedly connected to the lower side of the elastic clamp, and the clamping groove and the air knife are clamped.

Preferably, the power supply module comprises a thin film solar module and a lithium battery, wherein the thin film solar module is electrically connected with the lithium battery, the lithium battery is electrically connected with the air pump, one side of the power supply module is fixedly connected with a wind power adjusting module, the wind power adjusting module comprises an air quality sensor, the air quality sensor is in communication connection with the air pump, and the air quality sensor is electrically connected with the lithium battery.

In summary, the present invention includes at least one of the following beneficial technical effects:

the Laval pipe and the super air knife are used for accelerating the clean air flow output by the air pump, so that an air curtain is formed below the guide air nozzle, and the outside harmful gas, dust and the like are isolated, so that the safety of a user is ensured, the smooth breathing of the user is ensured, and the uncomfortable feeling of wearing is reduced; meanwhile, the thin film solar module and the lithium battery are matched to realize convenient energy supply to the device, so that the device is convenient to carry and ensures the durability; through the electric connection of air quality sensor and air pump, utilize air quality sensor to air quality's perception to carry out convenient control to the flow of air pump, realize real-time convenient adjustment.

Drawings

Figure 1 is an isometric view of an embodiment of the invention.

Fig. 2 is a bottom isometric view of an embodiment of the invention.

Fig. 3 is a schematic view of a clamping mechanism according to an embodiment of the invention.

Fig. 4 is a schematic diagram of the internal structure of an air knife according to an embodiment of the invention.

Fig. 5 is a circuit diagram of an air quality sensor and an air pump connection according to an embodiment of the invention.

Fig. 6 is a diagram of a thin film solar module charging circuit according to an embodiment of the invention.

Reference numerals illustrate: 1. an air pump; 2. a connecting pipe; 3. a Laval pipe; 4. an elastic clamp; 5. a rubber magnet; 6. a clamping groove; 7. an air knife; 701. a first chamber; 702. a second chamber; 703. an outer chamber; 704. a guide air tap; 8. a thin film solar module; 9. a lithium battery; 10. an air quality sensor.

Detailed Description

The invention is described in further detail below with reference to fig. 1-6.

The air pump 1 and the air quality sensor 10 according to the present invention are respectively: (EDZP 02-03 type circulation diaphragm positive pressure air pump, ZP07-MP503 air quality sensor);

the embodiment of the invention discloses a cap type air curtain mask. Referring to fig. 1-6, the cap type air curtain mask comprises two air pumps 1, wherein the output ends of the two air pumps 1 are communicated with Laval tubes3, two air pumps 1 are all communicated with each other through a flexible connecting pipe 2, the air pumps 1 are preferably arranged on the cap peak, an air knife 7 is communicated between the two Laval pipes 3, the optimized air knife 7 adopts an improved high-speed air knife 7, the air knife 7 is arranged to be of an arc structure for fitting a human head shape, the direction of an air outlet is adjusted, the size of the adjusted bent pipe type telling the air knife 7 is 10mm in outer diameter, 9.8mm in inner diameter and 220 in bending angle, the overall maximum diameter is 195.5mm, a guide air nozzle 704 for air outlet is arranged below the air knife 7, a rectifying structure is arranged inside the air knife 7, the rectifying structure inside the air knife 7 comprises a first cavity 701, a second cavity 702 and an outer cavity 703, the first cavity 701, the second cavity 702 and the outer cavity 703 are sequentially arranged from inside to outside, two adjacent parts of the first cavity 701, the second cavity 702 and the outer cavity 703 are communicated, the partition boards with C-shaped longitudinal sections are arranged between the two adjacent chambers of the first chamber 701, the second chamber 702 and the outer chamber 703, openings of the two partition boards are oppositely arranged, the opening of the partition board between the first chamber 701 and the second chamber 702 is arranged towards the guide air tap 704, an elastic clamp 4 which is clamped with the elastic clamp 4 is arranged on the outer side of the air knife 7 and is used for clamping with the hat peak of the hat, the elastic clamp 4 is in a C-shaped overlook structure, a through groove is arranged at the center line position of the C-shaped structure, rubber magnets 5 are embedded on the upper side and the lower side of the through groove, when the device is inserted on the hat peak through the elastic clamp, the elastic clamp 4 has inward clamping force, opposite sides of the rubber magnets 5 are arranged in opposite sides, the clamping tightness of the hat peak is improved, so that the clamping stability is improved, and meanwhile, the middle clamping mode is convenient for adjusting the distance between the hat peak, guarantee the effect of air curtain to the face, the below fixedly connected with draw-in groove 6 of elastic clamp 4, and the joint between draw-in groove 6 and the air knife 7, the preferred draw-in groove 6 longitudinal section is C shape structure, and the opening of C shape structure sets up downwards, interference fit between draw-in groove 6 and the air knife 7, the air current of air pump 1 input passes through Laval pipe 3 and the acceleration of air knife 7, form the air curtain through direction air cock 704, air curtain and people's face clearance fit, laval pipe 3's shrink section computational formula is:the calculation formula of the expansion section is as follows: /> The output pressure of the air pump 1 is 0.06MPa, the radius of an inlet of the Laval pipe 3 is 3mm, the radius of a throat is 1.2mm, the radius of an outlet is 2.45mm, the length of a contraction section is 13.2mm, the length of an expansion section is 92.4mm, the thickness of a pipe wall is 0.5mm, a detachable graphene filter membrane is arranged at the input end of the air pump 1, the graphene filter membrane is utilized to filter the passing air, thereby isolating most viruses, PM2.5 and the like from being output by an air curtain through the air pump 1, ensuring the cleanliness of the air curtain flow, realizing the effect of a mask, the inner side of the elastic clamp 4 is provided with a power supply module, the power supply module comprises a thin film solar component 8 and a lithium battery 9, the thin film solar component 8 is electrically connected with the lithium battery 9, the lithium battery 9 is electrically connected with the air pump 1, the air quality sensor 10 is electrically connected with the lithium battery 9, the working principle of the air quality sensor 10 is that when the external air quality is reduced, the current of a circuit becomes large, the magnetic force of an electromagnet cannot be counteracted at a switch to maintain the switch to be in an open state after the current reaches a certain value, the switch is closed, the air pump 1 works, when the air quality is improved, the conductivity of the sensor is increased, the spring force is larger than the magnetic force of the electromagnet, the switch is opened again, and a capacitor is added in the circuit to ensure that the air pump 1 can operate until harmful gas in the air is smaller than a critical value; the air quality sensor 10 with high sensitivity is used for monitoring the environmental pollution index, thereby meeting the requirement of adjusting the air supply quantity of the air pump 1.

The implementation principle of the cap type air curtain mask provided by the embodiment of the invention is as follows: the air knife 7 is clamped to the inner side of the clamping groove 6, the guide air tap 704 below the air knife 7 is adjusted to face, the guide air tap 704 is arranged towards the face of a person, a gap is formed between an air curtain formed by the guide air tap 704 and the face of the person, no external air flows in due to irregular diffusion of the edge positions of the air flow, accordingly, air between the air curtain and the face of the person is guaranteed to be always clean, then the elastic clamp 4 is sleeved on a cap peak, the elastic clamp 4 is used for clamping the cap peak, meanwhile, the two rubber magnets 5 on the inner side of the elastic clamp are mutually attracted, the elastic clamp 4 is guaranteed to clamp the cap peak stably, the position and the orientation of the air knife 7 are kept stable, when the air quality detected by the air quality sensor 10 is poor, an internal circuit of a trigger is used for transmitting signals to the air pump 1, the two air pumps 1 start to act, the air pump 1 is used for conducting clean air filtered by the graphene filtering film to the inside the air knife 7 after being accelerated by the Laval pipe 3, the air is rectified and processed by the first cavity 702 and the second cavity 703 inside the air curtain, the air tap is downwards output to form the cap peak, and the air tap 704 is used for conducting air flow to the nose, so that the air curtain is formed by the air tap is downwards, the air curtain is stably clamped, the position of the user is guaranteed, the air flow is reduced, and the air quality of the face of the person is adjusted to the face of the person is conveniently, and the person is conveniently and the person is reached, and the user is conveniently and the air quality is adjusted by the air pump position of the face of the user.

It should be noted that in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Cap formula air curtain gauze mask, including two air pumps (1), its characterized in that: the output ends of the two air pumps (1) are communicated with Laval pipes (3), an air knife (7) is communicated between the two Laval pipes (3), a guide air nozzle (704) for air outlet is arranged below the air knife (7), a rectifying structure is arranged inside the air knife (7), an elastic clamp (4) which is clamped with the air knife (7) is arranged on the outer side of the air knife (7), the elastic clamp (4) is used for clamping with a hat brim of a hat, air flow input by the air pump (1) is accelerated by the Laval pipes (3) and the air knife (7), an air curtain is formed by the guide air nozzle (704), the air curtain is in clearance fit with a human face, the radius of an inlet of the Laval pipe (3) is 3mm, the radius of a throat is 1.2mm, the radius of an outlet is 2.45mm, the length of a contraction section is 13.2mm, the length of an expansion section is 92.4mm, the thickness of a pipe wall is 0.5mm, the input end of the air pump (1) is provided with a detachable graphene filtering membrane, and the elastic clamp (4) is provided with a power supply module;

the inside rectification structure of air knife (7) includes first cavity (701), second cavity (702) and outer cavity (703), first cavity (701), second cavity (702) and outer cavity (703) are set gradually from inside to outside, and all communicate the setting between adjacent two in first cavity (701), second cavity (702) and outer cavity (703), all be provided with the baffle that longitudinal section is C shape structure between first cavity (701), second cavity (702) and the outer cavity (703) adjacent two cavities, and the opening of two baffles sets up in opposite directions, baffle opening orientation direction air cock (704) set up between first cavity (701) and second cavity (702).

2. The cap-type air curtain mask according to claim 1, wherein: the calculation formula of the contraction section of the Laval pipe (3) is as follows:

the calculation formula of the expansion section is as follows:

the output pressure of the air pump (1) is 0.06MPa.

3. The cap-type air curtain mask according to claim 1, wherein: the elastic clamp (4) is of a C-shaped structure in overlook view, a through groove is formed in the center line position of the C-shaped structure, rubber magnets (5) are embedded in the upper side and the lower side of the through groove, a clamping groove (6) is fixedly connected to the lower side of the elastic clamp (4), and the clamping groove (6) and the air knife (7) are clamped.

4. The cap-type air curtain mask according to claim 1, wherein: the power supply module comprises a thin film solar module (8) and a lithium battery (9), wherein the thin film solar module (8) is electrically connected with the lithium battery (9), the lithium battery (9) is electrically connected with the air pump (1), one side of the power supply module is fixedly connected with a wind power adjusting module, the wind power adjusting module comprises an air quality sensor (10), the air quality sensor (10) is in communication connection with the air pump (1), and the air quality sensor (10) is electrically connected with the lithium battery (9).