WO2017107950A1 - Double-layer direct-discharging respirator - Google Patents

Abstract

A double-layer direct-discharging respirator comprises a gauze filtering layer (1), a direct-discharging inner layer (2), a normally closed exhaust air exhalation check valve (3), normally closed fresh air inhalation check valves (4), respirator straps (5), a wearing support (6), an air communication tube (7) and an air filtering element (8). The direct-discharging inner layer (2), which is tightly connected with the normally closed exhaust air exhalation check valve (3) and the normally closed fresh air inhalation check valves (4), is arranged inside the gauze filtering layer (1) or the wearing support (6), and the volume of a space between the direct-discharging inner layer and the face of a user is minimized, so that the user can only breathe in the air in the gauze filtering layer (1) and the air filtering element (8), and the exhaled exhaust air is completely and directly discharged outside the respirator.

Description

Double cover straight mask

The present application claims priority to Chinese Patent Application Serial No. No. No. No. No. No. No. No. No.

Technical field

The invention relates to a mask, in particular to a tightly arranged inner cover which is closely connected with a normally closed exhaust gas exhalation check valve and a normally closed air suction check valve in a gauze filter cover or a wearing bracket, and Minimize the volume of space that is placed before people's mouth and nose, so that people can only inhale the air inside the gauze filter cover and air filter device, and the exhaled exhaust gas is completely out of the mask, thus achieving complete exhaust gas replacement. Double-faced straight masks for comfort.

Background technique

The harm of dust to the human body is well known. It seriously damages the normal defense function of the human body, causes lung diseases, and eventually leads to cancer.

I have been working in a ceramics factory for 6 years. Like everyone else, I know that the dust problem is extremely harmful to the health of employees. However, most workers will not wear masks consciously if they are not strictly supervised. And there are very few workers who always resist, and take off their masks.

The history of mask development has been at least for thousands of years. If it is easy to improve, people have already changed it. What is the current mask that is uncomfortable to wear? Workers are reluctant to wear masks regardless of their health.

We know that in addition to special industries such as diving, aerospace and medical, whether it is a gauze mask or a mask with a filter device, each mask almost covers the human face. If this is not the case, for gauze masks, its filter area is too small, resulting in insufficient oxygen supply; for masks with filter devices, it is not able to position the bulky filtration system.

Through careful observation, we will find that these civilian masks form a large volume of cavities in front of the mouth and nose. When people use them, the exhaled breath is always mixed in the large cavity in front of the mouth and nose. The mixing of this kind of exhaust gas and filtered air brings three drawbacks: First, the exhaust gas is not completely discharged from the filter net, and the air in the filter net is always mixed with a large part of the exhaust gas that has just been exhaled, causing people to always feel Insufficient oxygen supply and difficulty in breathing; second, the residual heat of the exhaled exhaust gas is emitted in the filter net, and the face feels hot and hot, and it seems that there is something dirty. On the face, the time is long, which makes people upset and restless; the third is the positive pressure caused by the exhaust gas in the filter net, so that the sealing state of the filter frame is loose, and the gas with waste heat is easy to get from the bridge of the nose. Both sides rush to the front of the eye to form a wave of air, causing blurred vision. Especially for people wearing glasses, it is more troublesome. When the lens encounters the air wave, it is blurred immediately and needs to be scrubbed constantly.

Now, more and more smog weather, the number of people who need to use masks will multiply. After the current mask is worn, it is so uncomfortable. Is there any way to solve it? We have made the following discussion.

Summary of the invention

The invention relates to a mask, in particular to a tightly arranged inner cover which is closely connected with a normally closed exhaust gas exhalation check valve and a normally closed air suction check valve in a gauze filter cover or a wearing bracket, and Minimize the volume of space that is placed before people's mouth and nose, so that people can only inhale the air inside the gauze filter cover and air filter device, and the exhaled exhaust gas is completely out of the mask, thus achieving complete exhaust gas replacement. Double-faced straight masks for comfort.

We know that the masks that people use are designed to have such a large outer frame area. The use of gauze as a filter material is to solve the problem that the cartilage's nose can not be stressed and the filter area is sufficient; for air filter devices. In terms of masks, in addition to solving the problem that the cartilage's nose can not be stressed, it is also necessary to solve the problem of stability due to the bulkiness of the air filter device. Since the current common mask frame is large, the volume of the cavity formed in front of the mouth and nose of the person is also large. When the exhaled gas is exhaled, the exhaust gas and the filtered air are mixed, causing the oxygen inhaled by the person to be oxygenated. The rate is very low.

The above technical problem of the present invention is solved by providing a double-cover straight-line mask having the following structure: the double-cover straight-line mask includes: a gauze filter cover, a straight-line inner cover, a normally closed exhaust gas exhalation check valve, The normally closed air suction check valve, the mask belt, the wearing bracket, the air communication tube and the air filtering device are characterized in that: a gating cloth filter cover or a wearing bracket is provided with a normally closed exhaust gas exhalation check valve, often The closed air suction check valve is closely connected to the straight inner cover, and the space volume before the mouth and nose is minimized, so that people can only inhale the air inside the gauze filter cover and the air filter device. The exhaust gas is completely straight out of the mask.

The double-cover in-line mask of the present invention has the following advantages over the current market masks.

First, the oxygen content of the air in the filter is increased. Nature provides basic living conditions for everyone. However, if you are in a special environment that lacks oxygen, or if there is no oxygen in the environment, but for some reason you can not get enough oxygen, the body will undergo functional, metabolic and morphological changes. This state is generally referred to as hypoxia or hypoxia. The masks in the current market, the nasal cavity and the inner cavity of the filter are mixed together, and this blending The cavity has a large volume. In this cavity, there are both filtered air that comes in when people inhale, and a lot of exhaust gas that is mixed when people exhale. For a long time, the oxygen content in the filter cavity is lower than that in the atmosphere. a lot of. The energy produced by the glycolysis of cells under environmental anoxic conditions is much lower than the normal value, and at the same time, lactic acid waste is generated, which will form an acidic body and cause chronic diseases and even cancer in the long term. The double-cover straight-line mask of the present invention is provided with a normally closed type exhaust gas exhalation check valve and a normally closed air suction check valve in a gauze filter net cover or a wearing bracket, and is directly connected with the inner cover, and minimizes the setting thereof. In the space volume before people's mouth and nose, people can only inhale the air inside the gauze filter cover and the air filter device. The exhaled exhaust gas is completely out of the mask, and the exhaled exhaust gas is not mixed. Within the filtered air, relatively, the oxygen content of the air in the filter is increased, which is beneficial to people's health.

Second, wearing a mask on the face without any heat, feeling cool and comfortable. The current mask mixes the oral cavity, the nasal cavity and the inner cavity of the filter net. Since the body temperature is always maintained at about 36 degrees, the exhaled exhaust gas temperature is also about 36 degrees. This kind of warm exhaust gas passes through the face and a large part of it stays in the very sensitive part of the face, which makes people feel uncomfortable and causes panic in the heart. It seems that there is a message telling that there is a lot of exhaust gas in the hood. Insufficient oxygen. The double-cover straight-line mask of the invention is provided in the gauze filter cover or the wearing bracket, and is closely connected with the normally closed type exhaust gas exhalation check valve and the normally closed air suction check valve, and is arranged in the straight inner cover, and is minimized. The volume of space before the mouth and nose allows people to inhale only the gauze filter cover and the air inside the air filter. The exhaled exhaust gas is completely out of the mask, thus eliminating the entry of warm gas into the filter. The net also ensures the purity of the air in the filter. When a person inhales the air in the filter, a negative pressure is formed in the filter, and the outside air of the wire enters from the large-area filter, and the human face feels cool.

Third, there is no positive pressure in the filter, no hot air atomizing glasses. All mask filters are sealed around the person's face to prevent unfiltered air from entering the filter. However, since the nose portion of the person is convex, often the left and right sides of the bridge of the nose are not tightly sealed. When people exhale the exhaust gas, a positive pressure is formed in the filter net, and the gas with a temperature will slightly rise from the left and right sides of the bridge of the nose. If you wear glasses, the lens will be atomized immediately, and the eyes will be blurred. The double-cover straight-line mask of the invention is provided in the gauze filter cover or the wearing bracket, and is closely connected with the normally closed type exhaust gas exhalation check valve and the normally closed air suction check valve, and the in-line inner cover is inhaled only by people. The air in the gauze filter cover and the air filter device is exhausted directly outside the mask, and the exhaust gas from the mouth and nose of the person cannot enter the filter net, and no positive pressure is formed in the filter net, so The glasses will not be atomized.

DRAWINGS

Embodiments of the present invention will be described below with reference to the drawings.

1 is a schematic view showing the structure of a double-cover straight-line mask of the gauze filter material of the present invention.

2 is a schematic view showing the structure of a double-cover straight-line mask with a filtering device according to the present invention.

In the picture: 1 - gauze filter cover, 2 - straight inner cover, 3 - normally closed exhaust exhalation check valve, 4 - normally closed air intake check valve, 5 - mask cover, 6 - wearing bracket, 7 - air communication tube, 8 - air filtration device.

detailed description

1 and 2 illustrate a specific embodiment of a double cover inline mask of the present invention.

1 is a double-cover straight-line mask embodiment of a gauze filter material, in which a straight inner cover 2 having a small cavity is disposed in the gauze filter cover 1. The normally closed exhaust gas exhalation check valve 3 and the normally closed air suction check valve 4 are placed as close as possible to the mouth and nose of the person to reduce the volume of space before the mouth and nose of the person. During work, the straight inner cover 2 is pressed against the mouth and nose of the person by the pulling force of the mask belt 5.

2 is a double-face straight mask embodiment with a filtering device in which a straight inner cover 2 having a small cavity is disposed in the wearing bracket 6. The normally closed exhaust gas exhalation check valve 3 and the normally closed air suction check valve 4 are placed as close as possible to the mouth and nose of the person to reduce the volume of space before the mouth and nose of the person. When working, relying on the force of wearing the bracket, the straight inner cover 2 is closely attached to the mouth and nose of the person.

In actual production, in order to minimize the space volume of the straight inner cover 2 before the mouth and nose of the person, the normally closed exhaust gas exhalation check valve 3 and the normally closed air suction check valve 4 can take a small volume and a large number. The way to compress the installation space.

There is no doubt that the double-cover in-line mask of the present invention can be variously modified and modified, and is not limited to the specific structure of the above embodiment, such as the shape, size, and various changes of the mounting position of the check valve. In summary, the scope of protection of the double-cover inline mask of the present invention should also include those that are apparent to those of ordinary skill in the art.

Claims (1)

Double double-face straight mask, which comprises: gauze filter cover, straight inner cover, normally closed exhaust exhalation check valve, normally closed air suction check valve, mask belt, wearing bracket, air communication tube, air The filtering device is characterized in that: a gauze filter cover (1) or a wearing bracket (6) is provided with a normally closed exhaust exhalation check valve (3) and a normally closed air suction check valve (4). Connect the straight inner cover (2) and minimize the volume of space that is placed in front of people's mouth and nose so that people can only inhale the air inside the gauze filter cover (1) and the air filter device (8). The exhaled exhaust gas is completely out of the mask.

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