CN106267614B - Have exhaust valve on nose cup removes micronic dust ventilator - Google Patents

Abstract

The present invention relates to a dust removal ventilator for preventing backflow of exhaled air into a filter by having an exhaust valve on the nasal mask: including a nasal mask for attaching and detaching to the nose and a filter connected to the nasal mask through a connecting hose The front of the nasal mask facing the nose is provided with an exhaust valve that is opened only during exhalation. When exhalation is discharged through the exhaust passage, the air inside the connecting hose flows into the exhaust passage side, thereby preventing exhalation. Backflowing into the connecting hose, the exhaust passage narrows gradually towards the exhaust valve so that as the air velocity through the exhaust passage increases as exhaled breath exits through the exhaust passage, the exhaust valve opens rapidly, filtering The filter comprises: a hollow casing, formed with a hose connection part; a filter paper wound into a roll shape, which is arranged to be detachable inside the casing; a filter agent, which is laminated between the wound filter papers; and a cover body to It is provided in the open end part of the said casing so that attachment or detachment is possible, and the said filter paper inside can be attached and detached.

Description

Dust removal ventilator with exhaust valve on nasal mask

technical field

The present invention relates to a dust-removing respirator, in particular, to a dust-removing respirator which is provided with an exhaust valve on a nasal mask to prevent backflow of exhaled air into a filter.

More specifically, the present invention relates to a dust removal ventilator equipped with an exhaust valve on a nasal mask: an exhaust valve is provided on a nasal mask connected to a filter by a flexible connection hose, and an exhaust valve is provided. The width of the exhaust passage gradually narrows toward the exhaust port, so that the internal pressure of the exhaust passage becomes smaller when the exhalation is discharged, and the exhaled breath does not flow into the connecting hose but is discharged to the exhaust port, thereby preventing exhalation. Backflow into the connecting hose and re-inhalation into the nose during inspiration.

Background technique

Masks are mostly used as mechanisms for filtering external air and supplying it to the human body.

In the past, most of these masks used a structure in which ear loops were placed on the cloth covering the mouth and nose. However, recently, with the proliferation of various industrial facilities and vehicles, of course, the environment caused by the accelerated desertification of the earth due to warming has also been used. Not only does the dust contain a variety of harmful components, but because of its micronization, there is a problem that a mask formed only of cloth cannot filter out the fine dust.

There are Patent Documents 1 to 3 as techniques for solving such a problem.

The air cleaning mask involved in Patent Document 1 includes the following parts: a pre-filter part, woven into fine pores with a diameter of 1/100,000 mm, so as to filter out impurities at one time; Filtered fine dust; activated carbon filter components, which adsorb various malodors, carbon monoxide, and sulfinic acid gases contained in the purified air passing through the electrostatic filter components; and chlorine dioxide filter components, which pass through the activated carbon filter components. Harmful gases such as ammonia, methyl mercaptan, and hydrogen sulfide contained in the air are decomposed by chlorine dioxide, while bacteria and molds are oxidized and decomposed, thereby converting the air into clean air.

The mask of Patent Document 2 includes: an inner layer that is in contact with the face, and has an area that can cover the nose and mouth of the wearer; The ultra-fine yarn filter cloth made of PP ultra-fine yarn is placed between the inner layer and the outer layer, and the edges are stitched to each other.

This existing mask filters and removes various impurities, odors, bacteria, and molds contained in the air, so that the user can inhale purified air, so of course, the feeling of refreshment is multiplied, and various diseases can be prevented in advance. Effect.

However, the existing masks are multi-layered. Since they cover not only the nose but also the mouth, not only does it affect breathing, but if it is used for a long time, the exhalation will be fogged and the moisture will be large, and because the mouth is covered, there is a risk of dialogue. and problems with eating.

The technique of Patent Document 3 was developed to improve such a disadvantage.

The nasal mask according to Patent Document 3 includes: a "U"-shaped clip portion consisting of two branches and surrounding a nasal septum; a connecting rod provided at the front ends of the two branches; and a filter provided on the connecting rod, the filter It includes a hemispherical upper filter and a moisture-containing plate at the bottom of the upper filter. The nasal mask can not only be firmly worn on the nose, because the filter can be arranged in the widest space in the nose, it can not only widen the surface area of the filter, but also correspond to the difference in the size of the nasal cavity. Wet board body, which can retain moisture for a long time, so that discomfort can be minimized.

However, the nasal mask of Patent Document 3 has a filter in the portion inserted into the nose. When the mask is inserted into the nose, not only the wearing feeling is poor, but the function of the filter is also reduced, and there is a disadvantage that the fine dust cannot be filtered out.

Patent Document 4 is a technique developed to improve this disadvantage.

The technology of Patent Document 4 includes: a purifying cylinder for supplying the outside air after purifying; a casing having an inner space for supplying the purified air from the purifying cylinder into the nostrils and discharging the user's exhalation; The suction port of the return valve is located on both sides of the casing to control the flow of purified air flowing into the casing; the exhaust port is provided with an exhaust check valve, which is located at the front of the casing to control the flow of air from the casing. The flow of air flowing out of the body; and a supply pipe for communicating between the suction port and the purification cartridge.

This conventional nasal mask reduces the inhalation rate of external air, and can inhale purified air that is not mixed with exhaled breath, and has an effect of reducing the feeling of stuffiness when wearing.

However, in such a conventional nasal mask, a supply check valve is provided in the narrow space of the housing so that the exhaled air discharged from the nose does not flow back into the purification cylinder, and the supply check valve is provided in such a narrow space. , the structure of course becomes complicated, and the size of the nasal mask becomes larger, so that the wearing feeling becomes poor, and there is a disadvantage that the appearance is not beautiful when wearing.

【Existing technical documents】

【Patent Literature】

(Patent Document 0001) 1. Korean Utility Model Patent No. 0304097

(Patent Document 0002) 2. Korean Utility Model Patent No. 0417114

(Patent Document 0003) 3. Korean Utility Model Patent No. 1273735

(Patent Document 0004) 3. Korean Utility Model Patent No. 1505648

SUMMARY OF THE INVENTION

technical problem to be solved

The present invention has been developed to solve the above-mentioned problems, and an object of the present invention is to provide a nasal mask equipped with an exhaust valve, which is simple in structure and easy to manufacture, and which can prevent backflow of exhaled air to a filter through a connecting hose. dust removal ventilator.

solution

In order to achieve the above-mentioned purpose, the dust removal ventilator is characterized in that it includes a nasal mask for attaching and detaching to the nose and a filter connected to the nasal mask through the connecting hose 30. When exhaled air is discharged through the exhaust passage, The air inside the connecting hose flows into the exhaust passage side to prevent backflow of the exhaled air into the connecting hose. The exhaust passage 10r is gradually narrowed toward the exhaust valve, and the exhaled air is discharged through the exhaust passage 10r. When the speed of the air passing through the exhaust passage 10r increases, the exhaust valve 11 is rapidly opened, and the filter preferably includes: a hollow shell with a hose connection part formed; a roll-shaped filter paper, The filter medium is laminated between the wound filter papers, and the cover body is detachably provided on the open end of the housing, and the filter paper inside can be attached and detached.

A check valve (25) is further provided on one side of the housing of the filter (20), and the check valve is opened during inhalation so that the inhaled air is supplied to the connection hose through the filter, and is supplied to the connection hose during exhalation. Close on exhalation so that exhaled air does not flow into the inside of the above filter. A sealing cover (12) is provided on the nose fitting part (10n) of the above-mentioned nasal mask (10) for sealing so that no gap is formed between the above-mentioned nose fitting part and the nostrils.

One side of the above-mentioned filter housing is further provided with a fixing mechanism for fixing the filter to a hair tie, a hat, or an auricle, thereby making it easy to wear.

Invention effect

As described above, in the dust removal ventilator of the present invention, the nasal mask is provided with an exhaust passage and an exhaust valve, so that the exhaled breath from the nose is directly discharged through the exhaust passage, thereby preventing the exhaled air from flowing backward to the filter. A phenomenon in which the filter becomes contaminated with moisture contained in the exhaled breath.

In particular, in the present invention, the exhaust passage is formed to gradually narrow toward the exhaust port. Therefore, when the exhaled air passes through the exhaust passage, the pressure of the exhaust passage is reduced due to the acceleration of the flow of air. The pressure is reduced, which has the effect of preventing exhaled air from flowing back into the connecting hose attached to the mask.

Description of drawings

FIG. 1 is a perspective view of an example of the dust removal ventilator of the present invention.

2 is a cross-sectional view during inhalation of the nasal mask constituting the dust removal respirator of the present invention.

3 is a cross-sectional view during exhalation of the nasal mask constituting the dust removal ventilator of the present invention.

Fig. 4 is a perspective view of an example of a nasal mask constituting the particulate dust removal ventilator of the present invention.

FIG. 5 is an exploded perspective view of an example of the filter of the dust removal ventilator of the present invention.

FIG. 6 is a cross-sectional view of an example of the filter of the dust removal ventilator of the present invention.

FIG. 7 is a longitudinal sectional view of an example of the filter of the dust removal respirator of the present invention.

8 is a manufacturing process diagram of a filter main body constituting the filter of the particulate dust removal respirator of the present invention.

FIG. 9 is an example of a state in which the dust removal ventilator of the present invention is worn.

FIG. 10 is another example of the state in which the dust removal respirator of the present invention is worn.

Among them, the reference numerals are described as follows:

10h: Hose connection part

10n: nose insert

10r: Exhaust passage

10o: exhaust port

11: Exhaust valve

12: sealing cover

20: Filter

21: Shell

21h: Hose connection part

22: Filter body

22p: filter paper

22c: Filters

23: Cover

23h: Air vent

25: Check valve

30: Connect the hose

40: Fixed mechanism

Detailed ways

The present invention can be implemented in various modifications and can have various embodiments, specific embodiments are shown in the drawings and described in detail in the following detailed description. However, the present invention is not limited to a specific embodiment, and should be understood to include all modifications, equivalents, and substitutions within the spirit and technical scope of the present invention.

In describing the figures, similar reference numerals are used for similar constituent elements. During the description of the present invention, the detailed description of the related well-known technology is omitted when it is considered that it affects the core content of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The invention prevents the backflow of exhaled air through the connecting hose to the filter so that fresh air can always be breathed.

As shown in FIG. 1 , the dust removal ventilator with an exhaust valve on the nasal mask of the present invention includes a nasal mask 10 , a filter 20 and a connecting hose 30 , and an exhaust valve is provided on the nasal mask 10 . 11.

The exhaust valve 11 is provided outside the exhaust port 11o, and an exhaust passage 10r is formed between the exhaust port and the nose fitting portion 11n. As shown in FIGS. 2 and 3 , the exhaust passage 10r is formed so as to face the exhaust. The mouth 11o narrows gradually.

Since the above-mentioned exhaust passage 10r is formed to be gradually narrowed toward the exhaust port 10o, when the exhaled breath passes through the exhaust passage, the air discharge speed gradually increases toward the exhaust port. Air pressure drops.

When the air pressure in the exhaust passage 10r decreases, the air inside the connecting hose 30 moves to the exhaust passage side where the pressure is relatively low, so that the phenomenon that the exhaled breath flows back to the filter through the connecting hose during exhalation can be prevented. (Refer to Figure 3)

If the nasal mask 11 deforms and collapses during breathing, it will adversely affect breathing, so it is made of relatively hard resin or metal. When the nose fitting portion 10n of the nasal mask 10 made of such a hard material is inserted into the nostrils, a foreign body sensation may be felt in the nose, the inside of the nose may be injured, and a gap may be formed between the nose and the nose fitting portion 10 .

Therefore, the sealing cap 12 made of soft synthetic resin or rubber is provided on the nose fitting portion 10n of the above-mentioned nasal mask.

The above-mentioned sealing cap 12 is provided to prevent a gap between the nose and the nose insertion portion 10n, thereby preventing unfiltered outside air from being sucked into the nose, and to reduce the foreign body sensation in the nose.

The particulate dust removal ventilator of the present invention configured as described above can use various types of filters 20, but a filter having a simple structure, easy fabrication, and easy replacement of the filter body is preferable.

As shown in FIGS. 5 to 8 , as an example of such a filter 20 , a filter main body 22 is detachably provided inside a hollow case 21 in which a hose connection portion is formed.

As shown in FIG. 5 , the housing 21 has a hose connection portion 21h formed at one end and an open cylindrical shape at the other end, and the filter body 22 is detachably provided inside.

A cover body 23 is detachably provided at the open end portion of the casing 21, and the filter body 22 provided in the inside can be put in or taken out.

As shown in FIG. 5 , a plurality of ventilation holes 23h are formed in the cover body 23 so that air can flow into the filter during inhalation.

The above-mentioned filter body 22 can use a general filter member such as activated carbon, and preferably a member that is easy to manufacture and can improve the filtering effect, an example of which is shown in FIGS. 5 to 8 .

That is, the filter body 22 is detachably provided inside the casing, and is made of filter paper 22p and a filter agent 22c, the filter paper 22p being wound in a roll shape, and the filter agent 22c being laminated on the winding of filter paper between 22p.

There are various methods for producing the above-mentioned filter body 22, but as an example, as shown in FIG. 8, an adhesive is applied to one side of a long filter paper 22p, and the filter 22c is applied evenly on the surface of the adhesive. Made by rolling filter paper into a roll shape.

The above-mentioned filter paper 22p can be used as a gas mask or a mask or the like with excellent dust filtering effect or cloth, and the above-mentioned filter 22c can be made of activated carbon, charcoal and other powders that have the function of absorbing harmful gases.

In addition, it is desirable that the dust removal respirator of the present invention is easy to wear, and does not give people unpleasantness in appearance when wearing.

Therefore, a fixing mechanism 40 may also be provided on one side of the housing of the filter 20, for fixing the filter to a hair tie, a hat or a pinna.

The above-mentioned fixing mechanism 40 can be different according to the position of the fixed filter. As shown in FIG. 9 , when the filter 20 is worn on the hair band, the filter 20 is embedded between the hair band and the head, or is set in a manner that can be hung on the hair band. clip.

In addition, another example of the fixing mechanism 40, as shown in FIG. 10, can be made into a ring shape so as to be hung on the auricle for fixing.

As described above, the dust removing respirator of the present invention constructed as described above is characterized in that an exhaust valve 11 is provided at the exhaust port of the nasal mask 10 so that the exhaled breath is directly discharged to 10°, but just in case , the filter 20 may be further provided with a check valve 25 .

That is, as shown in FIG. 7 , a check valve 25 may also be provided inside the hose connecting portion 21h of the housing to open during inhalation so that the inhaled air is supplied to the connecting hose through the filter, and during exhalation cut off so that exhaled air does not flow into the filter.

As described above, in the present invention, specific structural elements and specific matters have been described with reference to the limited embodiment drawings, but these are provided only to facilitate the understanding of the present invention as a whole, and the present invention is not limited to the above-mentioned One embodiment can be variously modified and modified based on these descriptions by those who have common knowledge in the field to which the present invention pertains.

Therefore, the idea of the present invention is not limited to the described embodiments, and the scope of the appended claims and equivalent or equivalent modifications to the scope of the claims all belong to the scope of the idea of the present invention.

Claims (4)

1. one kind remove micronic dust ventilator, which is characterized in that including for being loaded and unloaded on nose nose cup (10) and by connect it is soft Pipe (30) is connected to the filter (20) on nose cup,

Exhaust valve (11) only open when exhaling is equipped in the front in face of nose of nose cup, expiration passes through exhaust channel When (10r) is discharged, the air of above-mentioned connection hose (30) inside flows into exhaust channel side, so as to prevent from exhaling countercurrently to company It connects in hose, the exhaust channel (10r) becomes narrow gradually towards exhaust valve, to pass through the exhaust channel (10r) exhaling With the air velocity increase by the exhaust channel (10r) when discharge, the exhaust valve (11) is quickly opened,

Above-mentioned filter (20) includes:

Hollow shell (21), is formed with hose transition；

It is wound into the filter paper (22p) of scroll, is arranged to load and unload in the inside of above-mentioned shell；

Filtering agent (22c) is layered between the above-mentioned filter paper (22p) of winding；And

Lid (23), is arranged in the open end of above-mentioned shell in a manner of assemble and unassemble, and enables internal above-mentioned filter paper It is loaded and unloaded.

2. according to claim 1 remove micronic dust ventilator, which is characterized in that

Be also equipped with check-valves (25) in the side of the above-mentioned shell of above-mentioned filter (20), the check-valves it is open in air-breathing so that It obtains air-breathing and above-mentioned connection hose is fed by above-mentioned filter, closure may not flow into above-mentioned filtering to exhale when exhaling Inside device.

3. according to claim 1 remove micronic dust ventilator, which is characterized in that

Sealing cover (12) are equipped in the nose embedded division (10n) of above-mentioned nose cup (10), for sealing so that above-mentioned nose embedded division and nose Gap will not be generated between hole.

4. according to claim 1 remove micronic dust ventilator, which is characterized in that

Fixed mechanism (40) are equipped in the side of the above-mentioned shell of above-mentioned filter (20), for above-mentioned filter to be fixed to beam On headband, cap or auricle.