JPS6083672A - Environmental pollution preventing mask - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an environmental pollution prevention Ichikawa mask used in special environments such as clean rooms and extremely dry rooms.

In recent years, special environments such as dust-free, sterile, heat-humidity clean rooms and extremely dry rooms, such as semiconductor manufacturing facilities and operating rooms, have been increasing, and when people work in these special environment rooms, Moisture, carbon dioxide gas, bacteria, etc. in exhaled air affected the environment in the room, causing negative effects such as lowering product yields.

Therefore, in view of the above-mentioned problems, the present invention aims to prevent environmental pollution by purifying exhaled breath and then discharging it under a special environment.The present invention is characterized by:
The mask body includes a mask body that covers a breathing part, an inlet passage for inhaling air, and an outlet passage for discharging air, which communicate with the mask body, and an inlet valve part that freely opens and closes the inlet passage is provided in the middle of the inlet passage. , an exhalation valve section is provided in the middle of the exhalation path to open and close the exhalation path, and an exhalation purifying filter is provided between the outside air side opening of the exhalation path and the exhalation valve section. Embodiment 1 of the present invention will be described based on the drawings. In FIGS. 1 and 2, (1) is a mask for preventing environmental pollution, which includes a housing (2) having a substantially rectangular parallelepiped shape and a mask body (3). It is equipped with The housing (2) is made of flexible synthetic resin, and is provided with a partition plate (4) in the middle in the vertical direction, and is divided into two chambers: an upper chamber (6) and a royal chamber 3 (6). has been done. In addition, a large number of ventilation holes i81 (9) are formed in the ceiling plate (7) and partition plate (4) at the top of the housing (2), respectively, while the bottom plate (10) at the bottom of the housing (2) has a large number of ventilation holes i81 (9). Part 4 (11)
is formed.

The recess (11) is provided with gauze (12, etc.) for absorbing water, forming a humidifying tank.
6) is filled with a breath purification filter (11, for example, a synthetic zeolite adsorbent, etc.) containing a mixture of a desiccant, a disinfectant, a carbon dioxide adsorbent, etc.Furthermore, the front side of the housing (2) The front plate 04) of the housing (2)
It has a unique structure that is removably attached to the main body side.
On both sides of the front plate (I4), there are engaging parts (15) for engaging attachment bands for attaching the mask to the face.
are installed in four locations. The rear plate (mounting plate 07 for In) on the rear side of the housing (2) is still integrally formed, and the impaction recess (1→) at the front end of the mask body (3) is formed on the outer peripheral edge of the mounting plate 07). The mask body (3
) is made of a flexible elastic material, such as a soft rubber material, so as to fit closely against the face, and is suitably formed into a cylindrical shape to cover the mouth and nose. An intake valve part (19) is provided on the mounting plate 07) to open and close communication between the lower chamber (6) of the housing (2) and the inside of the mask body (3). 5) and the inside of the mask body (3) are provided with an exhalation valve section to freely open and close the communication.

The intake valve portion (19) includes an intake opening (21) formed in a mounting plate (t17) located on the rear side of the royal family (6);
In order to freely open and close the intake opening (1) from the mask body (3) side, the intake valve (1) is equipped with an intake valve section attached to the mask body (3).
2'4 is made of a flexible elastic material such as natural rubber or silicone and is formed into a disk shape, and is fitted into a mounting projection protruding rearward from the center of the intake opening 621).

The exhalation valve part consists of a circular opening (241) formed in the mounting plate (17) located on the rear side of the royal house (5), and a valve body (removably attached to the opening (241)). The valve body (2) is equipped with an exhalation valve (2) attached to the valve body (2), and the valve body (2) has an engaging groove screwed down on the same surface on the outside of its cylindrical portion.
is formed, and engages with a retaining protrusion (second stage) protruding in the radial direction of the opening 124) of the mounting plate 117), and an O-ring group is fitted on the outer peripheral surface of the cylindrical part, and the valve body (A seal is formed between the valve body and the mounting plate (!η.
A valve seat extension 1) is formed, and four mounting parts for the exhalation valve are formed via spoke parts extending in the radial inward direction. Like the intake valve (a), the exhalation valve (c) is made of a flexible elastic material such as natural rubber or silicone. Mounting part (G)
is integrally formed to protrude, and this installation ``i-'' is the spoke meeting part.
E□1. Yaba valve part''(3; Circumference: Edge 7, Valve seat @1)
□, the exhalation opening is opened toward the upper chamber (5) side, and closed.゛ □And,
When wearing a mask TTL, □, mask □ body (3)
Place it on the mouth and nose: □, and install it with the lead. , E□ cutting board (4
)'s ventilation hole (9) enters the chamber (6) C, and from there, ``air volume D'' ``@ 't21)'',! : II! L
It is inhaled into the mask body (3) between the air valves (goods), and is inhaled through the mouth and nose, which are the breathing areas. Here, the ventilation hole (8) of the ceiling board (7), the upper chamber (5), and the partition plate (4)''
The passageway for air intake is constituted by the chamber (6) and the intake opening (1).In addition, during exhalation, the exhalation valve part (I @ side becomes occluded, A gap is formed between the periphery of the exhalation valve part and the valve seat button, and therefore, exhalation passes through the exhalation opening and enters the upper chamber (5) from the gap with the exhalation valve (I11). enters the ceiling panel (
7) Ventilation, the hole is discharged to the outside from hole +81. Here,
Exhaust openings - Ventilation holes in the royal room (6) and ceiling panel (7) (
8) constitutes a discharge passage for air discharge. The ventilation hole (8) of the ceiling plate (7) constitutes an opening on the outside air side of the discharge path.

The first embodiment of the present invention is constructed as described above. For example, when used in an extremely dry clean room, if the gauze (1'4) of the humidifying tank is used with water absorbed in advance, Dry, clean air in the room is taken in through the suction passage and the intake valve section (1@).

In the lower chamber (6) in the middle of this suction path, the inhaled air is appropriately humidified by the moisture in the humidifying tank, so even if you work for a long time in the lower part of the extremely dry room, the mucous membranes of the respiratory air etc. This prevents damage to the body and protects the human body. In addition, when exhaled air is discharged into the room through the exhalation valve and the exhalation path, it passes through the exhalation purification filter (1) in the royal room (5). Moisture, carbon dioxide, bacteria, etc. inside are adsorbed, and the purified exhaled air is discharged into the room.Therefore, contamination caused by exhaled air in the room, which is a special environment, can be effectively prevented.Also, exhaled air purification If calcium chloride is used as a desiccant for a filter (one barrel), the moisture in the exhaled air absorbed by the water absorption action becomes water droplets, drips through the ventilation holes (9) of the partition plate (4), and enters the recesses ( 11)
The gauze (12) inside will absorb water, so the gauze (12)
This has the advantage that good water absorption can be achieved without the need for water injection.

FIG. 4 shows a second embodiment, in which the partition plate (4) is shaped like an i, and the intake valve portion θ9) is provided on the front plate where the lower chamber (6) is located. B. The suction passage and the discharge passage are divided.

In each of the above-mentioned embodiments, the housing (2) is divided to form the suction passage and the discharge passage. 83
672(3) However, it may be constructed so that it communicates with the mask body (3) in a manner that it can be opened and closed, or it can be constructed so that the suction passage and the discharge passage are removably connected to the mask body (3), making it convenient to carry. good. In addition, although the intake passage is equipped with a humidifying structure, depending on the environment, it may be equipped with a structure that humidifies or cools the intake air, or even equipped with a blower or the like to forcefully inhale the air. You may let them. Further, a filter for exhalation purification in the discharge passage (one barrel is shown using a mixture of a desiccant, a sterilizer, a carbon dioxide adsorbent, etc., but it may also be constructed using a heat sterilization method).

As described above, since the present invention is provided with an exhaled air purifying filter in the discharge path for air exhaust, even when working in special environments such as clean rooms and extremely dry rooms, exhaled air can be purified and used in special conditions. Since it is discharged into the environment, it has the advantage of effectively preventing pollution of the environment by exhaled breath.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing the first actual case of the present invention, Fig. 2 is a view taken along the line 1l-II in Fig. 1, Fig. 3 is an exploded perspective view of the exhalation valve 9, and Fig. 4 is a cross-sectional view of the exhalation valve 9. FIG. 3 is a side sectional view showing a second embodiment. 11)...Mask, +21...Housing, +31
...mask body, tll...exhalation purification filter,
(19)...Exhalation valve part, -...Exhalation valve part. Patent Applicant: Yamamoto Kogaku Co., Ltd. S. Procedural Amendment (Voluntary) November 1981 2411 1. Indication of the Case 1988 Patent Application No. 193022 2. Name of the Invention Environmental Pollution Prevention Mask 3. Amendments to be made Relationship with the patent applicant Yamamoto Kogaku Co., Ltd. 4. Agent: Month, Day, Showa (Voluntary initiative) 6. Subject of amendment/issue ← -- Document JP-A-83672 (5) 7. Contents of amendment On page 7, line 17 of the specification, insert the following after the phrase "as constructed." ``Figure 5 shows a third embodiment, in which a dust filter 381 is removable from the front side of the intake valve section of the first embodiment, or is fixed to the graffiti.'' (2) On page 9, from line 6 to line 2, the phrase ``This is a side sectional view.'' has been replaced with ``Side sectional view. Figure 5 is a side sectional view showing the third embodiment.'' and correct it. (3) Add as per the interest rate sheet in Figure 5.

Claims (1)

[Claims] 1. Comprising a mask body that covers the breathing area, an inlet passage for air intake and an outlet passage for air discharge communicating with the mask body,
An intake valve part that freely opens and closes the suction passage is provided in the middle of the suction passage, and an exhalation valve part that freely opens and closes the discharge passage is provided in the discharge passage, and the outside air side opening of the discharge passage and the discharge valve An environmental pollution prevention mask characterized by having an exhaled air purifying filter between the part and the part.