CN215225048U

CN215225048U - Brim and positive pressure air supply cap adopting brim

Info

Publication number: CN215225048U
Application number: CN202022097387.0U
Authority: CN
Inventors: 邱俊杰; 邱晓芬
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-12-21
Anticipated expiration: 2030-09-23

Abstract

The utility model relates to a brim and a positive pressure feeding hood adopting the brim. The cap brim comprises a cap peak and a hollow cap peak horizontally protruding in front of the cap peak, the lower bottom surface of the cap peak is provided with at least an inner layer gap and an outer layer gap extending around the outer periphery of the cap peak, airflow is downwards sprayed through the gaps to form an air curtain, the lower bottom surface of the cap peak is positioned at the inner side of the gaps and is also provided with an air supply hole for supplying air downwards, and the airflow passes through the air supply hole to form a positive pressure air supply area in the air curtain. The outer layer gap is vertically downward, and the inner layer gap and the outer layer gap form an angle of 3-18 degrees and are inclined outwards. The air supply hole is provided with more than two circles of holes, the included angle between the angle of the air supply hole and the vertical direction is 10-45 degrees, and the angle of the outer circle air supply hole is larger than that of the inner circle.

Description

Brim and positive pressure air supply cap adopting brim

Technical Field

The utility model belongs to life protective articles field, concretely relates to brim of a hat and adopt positive pressure feed hood of this brim of a hat.

Background

In recent years, air pollution and the influence of viruses and bacteria have a great influence on the respiratory tract of people, and various respiratory diseases are highly developed. Since 2019, severe respiratory diseases and derivative diseases thereof caused by the novel coronavirus sweep around the world, great threats are brought to the health of people, and a small obstacle is brought to the life and the travel of people. Although various vaccines and targeted drugs against coronavirus have been well researched and developed at present, due to the fact that the vaccines and drugs need to be subjected to strict clinical tests and approval in the application stage, and the viruses have high variability, and due to the characteristics of more frequent contact of people with various animals and plants and mobility of global personnel, the probability that various viruses affect human health across species in the future is higher, wherein viruses of respiratory system (such as other known coronavirus carried on bats, such as sars, mers and other coronavirus similar to novel coronavirus) and bacteria are more likely to pose a huge threat to human health. Through the successful experience of our country in 2020 in combating new coronavirus and the experience and training of our world in coping with new coronavirus, it has been clarified that the transmission capability of respiratory infectious diseases can be greatly reduced by filtering and isolating viruses, bacteria and dust in the air by physical means, and a better effect is achieved for preventing the pandemic of infectious diseases.

At present, personal protective articles suitable for people mainly comprise masks, particularly disposable medical surgical masks, and certainly, dustproof N95 masks, efficient medical N95 masks and some protective masks also have corresponding functions. However, the mask needs to be tightened on the nose surface by a nose clip, a belt and the like, so that the purpose of reducing the entrance of germs in the air into the respiratory tract can be realized, wherein the nose clip plays an important role in the mask, and the nose clip can not well seal the passage of the air entering the respiratory tract under the condition that the mask is tightened very tightly without the belt or the nose clip is improperly used, so that a considerable part of the air can directly enter a respiratory system without being filtered, and the mask can not effectively play a role in filtering; in addition, the skin of the nose and face is also injured when the mask is worn for a long time, and the capillary vessels under the corresponding skin are easily broken when the mask is tightened for a long time, which also brings inconvenience to the long-time use of the mask. In addition, because the nose clip is dependent on the height of the nose for sealing the air flow channel, for most east Asian people, tropical people and most infants, the nose clip is difficult to form a good sealing effect because the nose height is relatively low and the transition between the nose bridge and the cheeks is smooth. And because the infants cannot well fit with the mask, the protection of the infants from the outside air is difficult to realize. Therefore, the mask has high requirements for people to wear, and not only the mask needs to be worn in a correct manner, but also the physiological shape of the people needs to be suitable and matched. Protective articles such as protective masks can achieve a good sealing effect without a nose clip, but the protective articles also have the defect of pressing the skin because the band needs to be tightened. In addition, because the gauze mask inlayer is the layer that absorbs water, consequently the moisture of people in exhaling gathers on the layer that absorbs water in a large number, thereby the protective mask makes a large amount of vapor condense in the mask because of the existence of its expiratory valve resistance, the existence of these moisture leads to the bacterium to breed easily to reduced the life of these protective articles, makeed the filter media of considerable part not reach life and need change the protection promptly, thereby caused the waste.

In addition, although many masks with fan filter units are available on the market, products such as mobile lung-protection devices with long-lasting sand are available. However, these masks are either designed to directly mount the fan filter unit on the mask, or the outside of the mask is separately provided with the fan filter unit and the fan filter unit is hung on the neck or tied on the arm by a strap, and because the weight of the fan filter unit is on the head of the human body, the pressure is applied to the cervical vertebra, and because the weight of the fan filter unit is on the arm, the fan filter unit is not easy to wear and affects the beauty, and the breathing discomfort is caused by the direct air flow towards the nasal surface.

Although chinese patent application documents CN201520707985.1, CN201310381627.1 and CN90215570.9 disclose hat of wind-saving type, they all have the common feature that the hat is provided with slits on the periphery. Due to the characteristics of the caps, the gaps at the periphery of the caps are close to the head and face of a human body (generally less than 3cm), the close distances easily enable the emitted airflow (jet flow) to form attached flows along the face at the nose face of the human body due to the coanda effect (or coanda effect), the attached flows, particularly the attached flows near the nose, are damaged due to airflow flowing generated by inhalation of the human body, and a considerable part of outside air which is not isolated by the air curtain enters the respiratory tract along with the inhalation, so that the function of isolating unfiltered air from entering the respiratory system is lost. And the flow of the attached flow on the face often causes discomfort to users, and is also easy to cause water loss of the skin, so that the long-term use of people is further not facilitated. In addition, due to the function of low wind cost, people often have certain difficulty in obtaining gas with higher oxygen content; although the prior art CN90215570.9 has the air supply respirator provided in the air supply device to solve the above problems, the air flow direction of the air supply respirator is directed towards the nose, so the air supply device will also induce the air supply device (i.e. air curtain) to flow towards the nose due to bernoulli effect, thereby destroying the air insulation effect of the air supply device, and in addition, in order to supply enough oxygen for breathing, the air flow of the air supply respirator must keep enough flow, thereby bringing strong blowing feeling and being not good for breathing of people.

In view of the defect of the existing life protective articles and the prevalence of respiratory infectious diseases, the utility model discloses to the unfavorable use of life protective articles among the prior art, the waste that causes not to reach life and the not good defect of protective effect improve.

Disclosure of Invention

An object of the utility model is to provide a brim of a hat and adopt this brim of a hat just to press to send the hood, can realize better protecting effect, comfortable simple and convenient wear the use, do not influence the life who breathes and make full use of protection filter media through the design of this kind of brim of a hat and air supply cap and improve economic nature's technological effect.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

A brim including a crown and a bill projecting horizontally forwardly of the crown, the bill having a lower base surface with a slit extending around an outer periphery of the bill through which an air stream may be projected downwardly to form an air curtain, the brim comprising: the lower bottom surface of the cap peak in the space inside the gap is also provided with an air supply hole for supplying air downwards, and airflow passes through the air supply hole to form a positive pressure air supply area in the air curtain. The air supply holes are circularly arranged around a central shaft, the normal lines of the air supply holes face the central shaft (hereinafter referred to as inward), the air supply holes are provided with more than two circles of holes inside and outside, the included angle range of the angle of the air supply holes and the vertical direction is 10-45 degrees, the normal lines of the air supply holes on the inner ring face outwards, and the normal lines of the air supply holes on the outer ring face inwards. The distance between the gap positioned at the part right in front of the visor and the cap is more than or equal to 6.5cm, the gap is set to be a gap with at least an inner layer and an outer layer, the outer layer gap is vertically downward, and the included angle between the normal of the inner layer gap and the normal of the outer layer gap is 3-18 degrees and inclines outwards. The included angle between the normal of the inner layer gap and the normal of the outer layer gap is 12 degrees. And the included angle between the outer ring air supply hole and the vertical direction is more than or equal to the included angle between the inner ring air supply hole and the vertical direction. And a middle ring air supply hole is also arranged between the inner ring air supply hole and the outer ring air supply hole, the middle ring air supply hole is vertically downward, and a vertically downward central air supply hole is also arranged in the inner ring air supply hole. The middle part of the hollow visor is also provided with an air flow partition component and a flow disturbing component. The turbulence assembly is positioned in the center of the airflow distribution assembly so as to uniformly distribute airflow to the gaps and the air supply holes, so that the air speed at the outlet of the gaps is basically equal to that at the outlet of the vent holes, and the turbulence assembly can also be used as a reinforcing rib inside the cap peak to improve the strength of the cap peak.

The utility model discloses still include a malleation air supply cap, including filtering component, malleation air supply subassembly and the cap body, its characterized in that: the cap body is provided with the brim, and the positive pressure air supply assembly and the filtering assembly are carried on the shoulder and the back through the carrying system. The backpack system can be a small backpack provided with shoulder straps and other various backpack forms. Through this kind of arrangement, can be so that place most weight in the shoulder of the bearing of being convenient for to can arrange the tuber pipe of connecting the malleation and filtering air supply subassembly behind the brain, thereby realize pleasing to the eye effect that does not influence the activity.

Drawings

FIG. 1 is a bottom perspective view of a brim;

FIG. 2 is a front view of the brim;

FIG. 3 is a perspective view of the internal structure of the brim.

Detailed Description

As shown in the attached figure 1, the utility model relates to a brim of a hat, including cap 1 and the cap 2 of cap the place ahead horizontal projection, there is the fresh air inlet 10 in the both sides of cap 1, the bottom surface has the gap 3 that extends around the outer peripheral edges of cap peak under the cap peak, and the air current accessible the gap sprays downwards in order to form around the cap peak confined air curtain, through the outer air admission air curtain of air curtain separation air curtain is in the air curtain. The distance between the gap 3 positioned at the part right in front of the cap peak and the cap amount 1 is more than or equal to 6.5cm, the gap is at least provided with an inner layer and an outer layer, each layer is formed by a plurality of gaps which are discontinuously provided with long and narrow small holes and are arranged around the outer periphery, the gap of the outer layer is vertically downward, and the normal line of the gap of the inner layer and the normal line of the gap of the outer layer form an included angle of 3-18 degrees and are inclined outwards. In one embodiment, the included angle between the normal of the inner layer gap and the normal of the outer layer gap is 12 degrees; in other embodiments, the inner layer slot normal and the outer layer slot normal are at angles of 3 ° and 18 °, respectively. Through the gap setting of above-mentioned two-layer overlap to and slit fluidic characteristic, the inclosed effect of realization air curtain that can be better, thereby the gap formation air curtain that the inlayer leaned out is favorable to preventing unexpected meeting air current (other people sneeze) and carries germ and dust and get into in the air curtain and cause adverse effect to respiratory.

The lower bottom surface of the cap peak in the space inside the gap is also provided with an air supply hole for supplying air downwards, and airflow passes through the air supply hole to form a positive pressure air supply area in the air curtain. The air supply holes are provided with inner ring air supply holes 4, middle ring air supply holes 5, outer ring air supply holes 6 and center air supply holes 7, wherein the normal lines of the inner ring air supply holes 4 incline outwards and form an included angle of 30 degrees with the vertical direction, the normal lines of the outer ring air supply holes 6 incline inwards and form an included angle of 45 degrees with the vertical direction, and the normal lines of the middle ring air supply holes 5 and the center air supply holes 7 are downward vertically. Through setting up this malleation air supply district, can ensure that the atmospheric pressure in the air curtain is greater than the outer atmospheric pressure of air curtain for the outer air of air curtain can not enter into the air curtain in, and then gets into respiratory. Meanwhile, due to the existence of the positive pressure air supply area, the air curtain can be effectively prevented from forming facial attached flow on the face of a human body, so that the possibility that external air enters a respiratory system is reduced, and the wearing comfort is improved. Meanwhile, the condition that air outside the air curtain carries germs to enter a respiratory system due to unexpected head-on jet flow is further prevented. In one embodiment, the normal line of the inner ring blast hole 4 is inclined outwards and forms an angle of 10 degrees with the vertical direction. Through the interior outer lane supply-air outlet that inclines to set up in opposite directions, can realize mixing as early as possible of malleation air supply district air current, can be so that the user face does not have the sense of blowing and be favorable to breathing the higher air of oxygen content, simultaneously because outer lane supply-air outlet inclination is greater than the inner circle supply-air outlet, the air current that more can prevent the inner circle supply-air outlet effectively directly dashes the nasal part, can also effectively take away the waste gas of user's exhalation, prevent vapor and carbon dioxide in the expiration and accumulate in the air curtain, thereby fundamentally solves vapor and is detained thereby breeding the technical problem of bacterium in gauze mask layer or the mask that absorbs water. Thereby prolonging the service life of the filter equipment

In one embodiment, the middle part of the hollow visor 2 is further provided with an air flow dividing assembly 8 and a flow disturbing assembly 9, wherein the flow disturbing assembly 9 is located in the center of the air flow dividing assembly 8, so that air flow can be diffused as soon as possible to form a uniformly mixed positive pressure air supply area when being sprayed out of the air supply hole, blowing feeling can be reduced, and breathing of a user can be facilitated. The flow disturbing component can be used for conveniently and uniformly distributing airflow to the gap and the air supply hole, so that the air speed at the outlet of the gap is basically equal to that at the outlet of the vent hole; in addition, the reinforcing ribs are also reinforcing ribs inside the cap peak and can play a role in improving the strength of the cap peak.

In one embodiment, the present invention further comprises a positive pressure air supply cap, which comprises a filtering assembly, a positive pressure air supply assembly (both are common prior art, and can be common assemblies such as a filter screen and a blower) and a cap body (since they belong to common parts, these assembly drawings are not shown), the cap body has the brim as described above, and the positive pressure air supply assembly and the filtering assembly are carried on the back of the shoulder by a carrying system. The backpack system can be a small backpack provided with shoulder straps and other various backpack forms. Through this kind of arrangement, can be so that place most weight in the shoulder of the bearing of being convenient for to can arrange the tuber pipe of connecting the malleation and filtering air supply subassembly behind the brain, thereby realize pleasing to the eye effect that does not influence the activity. Through the design, the protective mask is not only favorable for adults to use, but also favorable for infants to use, and can provide good protective tools for more people, so that the user is not limited by the fact that protective articles (such as a mask and a mask) cannot play a good protective role under the physiological condition of the user.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A brim comprising a crown and a hollow visor projecting horizontally forwardly of the front of the crown, the visor having a lower base surface with a slit extending around the outer periphery of the visor through which an air stream may be projected downwardly to form an air curtain, the brim comprising: the distance between the part of the gap positioned right in front of the visor and the cap is more than or equal to 6cm, the lower bottom surface of the cap visor positioned in the space inside the gap is also provided with an air supply hole for supplying air downwards, and airflow passes through the air supply hole to form a positive pressure air supply area in the air curtain.

2. The brim of claim 1 wherein: the gap is at least provided with an inner layer and an outer layer, wherein the outer layer is vertically downward, and the included angle between the normal line of the inner layer gap and the normal line of the outer layer gap is 3-18 degrees and is inclined outwards.

3. The brim of claim 1 or 2 wherein: the air supply holes are provided with more than two circles of holes, the included angle between the angle of each air supply hole and the vertical direction ranges from 10 degrees to 45 degrees, the normal lines of the air supply holes on the inner circle incline outwards, and the normal lines of the air supply holes on the outer circle incline inwards.

4. The brim of claim 3 wherein: the included angle between the normal of the inner layer gap and the normal of the outer layer gap is 12 degrees.

5. The brim of claim 4 wherein: and the included angle between the outer ring air supply hole and the vertical direction is more than or equal to the included angle between the inner ring air supply hole and the vertical direction.

6. The brim of claim 5 wherein: and a middle ring air supply hole is also arranged between the inner ring air supply hole and the outer ring air supply hole, the middle ring air supply hole is vertically downward, and a vertically downward central air supply hole is also arranged in the inner ring air supply hole.

7. The brim of claim 6 wherein: the middle part of the hollow visor is also provided with an air flow partition component and a flow disturbing component.

8. The brim of claim 7 wherein: the flow disturbing component is positioned in the center of the air flow dividing component so as to uniformly distribute the air flow to the gap and the air supply holes, and the air speed at the outlet of the gap is basically equal to that at the outlet of the vent hole.

9. The utility model provides a malleation air supply cap, filters air supply assembly and the cap body including filter assembly, malleation, its characterized in that: the cap body is provided with the brim as defined in any one of claims 1 to 8.

10. The positive pressure blower cap of claim 9, wherein: the filtering component and the positive pressure air supply component are carried on the shoulder and the back through a carrying system.