JPH02144110A - Air cleaner for clean room and pipe for collecting dust in clothes utilizing the cleaner - Google Patents

Abstract

PURPOSE:To lighten the title air cleaner in weight and to reduce its space by using a brushless motor using a copper-plated sheet coil, etc., and a sirocco fan connected to the motor. CONSTITUTION:An air suction port 2 is provided to the upper end of an air cleaner 1 for a clean room having the shape of a soldier's canteen, and an air outlet 3 at eh lower end, respectively. The brushless motor 8 using a copper- plated sheet coil, etc., and the sirocco fan 7 connected to the motor 8 are provided directly below the air suction port 2. A glass-fiber filter 10 is set beside the motor 8 and fan 7. As a result, the cleaner is made compact and lightweight, and further the cleaner is handy to carry. Since the cleaner has the shape characteristic of a soldier's canteen, the cleaner is closely attached to the body of a wearer, and the operator is not disturbed at the time of wear.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is used in clean rooms used for semiconductor device manufacturing, sterile surgery, etc., which have recently become popular, and is used to prevent and control dust in the clean room. Therefore, the present invention relates to a clean room air cleaner used in a clean room, and particularly to a clean room air cleaner that does not release dust generated from the human body to the outside of cleaning clothes.

[Technology background]

With the development of advanced technology in recent years, in fields such as electronics, precision industry, medicine, brewing, and cosmetics, there is a need for clean rooms that can extremely suppress dust in the air.
Particularly in the field of semiconductor manufacturing, the cleanliness of the clean room has a major impact on the quality and performance of semiconductors, and even in hospital operating rooms, it is necessary to perform surgery in a clean room due to considerations such as post-surgical wound recovery. is occurring. In these clean rooms, it is necessary to take care not only to prevent dust from entering from outside, but also to pay attention to dust generated from the bodies of workers working in the clean rooms.

The applicants of the present application have disclosed a patent application published in Japanese Patent Application Laid-Open No. 63/1999 regarding an air suction type white coat used for dust prevention and dust control in a lean room and an air purifying device for a clean room.
No. 108140 has already been proposed, and refers to a portable air purifier consisting of a filter 71, a dust collector 72, and a suction pump 73 as shown in FIG.

(Problems to be Solved by the Invention) The present invention relates to an improved type of the portable air purifier and in-clothing dust collection pipe disclosed in Japanese Patent Application Laid-open No. 108140 of 1983, and is shown in FIG. The portable air purifier is
As is clear from the figure, the conventional cylindrical filter 71. It consists of a dust collector 72 and a suction pump 73, so even though it is portable, it is inconvenient to wear on the human body, and it is cylindrical and has a relatively large volume capacity when attached to the waist of the human body. This has disadvantages such as interfering with the wearer's work and significantly impeding work efficiency.

[Means for solving the above problems]

Therefore, the present invention improves the above-mentioned portable air purifier to make it more compact and lightweight, making it more convenient to carry. It has a shape that allows it to fit closely to the wearer's body and prevent it from getting in the way of work, and in conjunction with the use of the air-breathing white coat shown in Japanese Patent Application Laid-open No. 108140 of 1983, it is designed to be comfortable for workers. This is an air cleaner for clean rooms whose purpose is to prevent dust generated from human bodies from scattering in the clean room.

For this reason, the present invention has a shape of a military type, has an air circulation path along this shape, and has an air intake port provided at the upper end of the shape of the military type, A brushless motor using a copper-plated sheet coil, etc. installed directly below the air intake port, a sirocco fan directly connected to the motor, a filter installed next to the brushless motor and the sirocco fan, and a filter installed next to the filter. in position,
The purpose is to suck air in the clean bottom, which has an exhaust port provided at the lower end of the military style rice ★ shape, and an integrated battery detachably provided below the brushless motor and sirocco fan. This clean room air cleaner is an improved version of the dust collection pipe inside clothing.

[Action of the invention]

The present invention makes it possible to reduce weight and save space by using a brushless motor using copper-plated sheet coils and a sirocco fan directly connected to this motor.
t(high-efficiency particle
ateAir Fllter) placed next to the brushless motor and sirocco fan,
The air cleaner has a distinctive military-style rice bowl-shaped external shape,
When worn, the air cleaner body for clean rooms improves its adhesion to the wearer's human body, making it highly workable for the wearer, and the suction air port of the flexible pipe that comes with the air cleaner body comes in close contact with the human body. This is an improved in-clothing dust collection pipe that uses a corrugated pipe that allows air suction without the need for air suction.

(Embodiments of the invention) The present invention will be explained in detail based on one embodiment drawing.

1(A) and 1(B) are views of the external shape of an air cleaner shaped like a military-style rice bowl, which is an embodiment of the present invention, viewed from above and below, and FIG. FIG. 2 is a sectional view of the air cleaner according to the illustrated embodiment.

1(A), (B) and FIG. 2, 1 is an air cleaner main body according to the present invention, 2 is an intake port provided at the upper right end of the main body, 3 is an exhaust port provided at the lower left end of the main body, 4 5 is a switch, 5 is an AC adapter connector, and 6 is a battery case part.

The air cleaner in this embodiment is formed in a military-style uniform shape that fits closely to the human body, and the air sucked from inside the cleanliness clothes worn by the wearer enters the air intake port 2 along with the dust emitted by the wearer. It is sucked in and discharged to the outside from the exhaust port 3. Further, 7 is a sirocco fan having a characteristic shape with a diameter of 35 l1rQ, and is formed directly below the intake port 2 in order to smooth the air flow and reduce the volume of the air cleaner.

8 is connected to this sirocco fan 7 with a diameter of 35 mm,
It is a brushless motor with a thickness of 12.5 mm. 9 is the air outlet of the fan, 10 is a glass fiber HEPA filter (High-efficiency party
curate air filter) and is housed in a filter case 14.

The specific shapes of the HEPA filter 10 and filter case 14 used in this example are shown in FIG.

The HEPA filter 10 is a filtration filter mainly made of glass fiber, and the folded structure of the filter material is different from the standard one.
By layering finely folded truss-shaped filter media, the total size is 60 mm x 65 mm x
A filter having a size and shape of 45 mm is constructed, and in terms of performance, the filter 10 has a material surface area per unit area that is twice as wide as a standard, so that pressure loss when air passes through is reduced. This makes it possible to collect more than 99.97 of 0.3 micromm particles. Further, since the filter case 14 is made of ABS resin, there is no dust generated from the case frame itself, and since the nut 15 is inserted into the filter frame, it is easy to install the filter 10. The filter frame 0 does not shift, can be easily and accurately attached to the case 14, and has a structure in which there is no air pocket around the filter frame.

Further, an in-clothing dust collecting pipe 20 made of a corrugated vibrator is attached to the air intake port 2.

FIG. 4 shows an example of a specific configuration of the dust collecting vibrator 20. As shown in FIG.

The dust collection pipe 20 shown in FIG. 4 is an example of a dust collection pipe 20 that is placed inside a short-sleeve type cleaning garment. In this embodiment, although it is not clear from the drawings, the dust collection pipe 20 is made of a corrugated pipe material.

By using corrugate vibe as the material of the pipe,
It is highly flexible and does not become flat even when bent, so it not only has excellent air circulation, but also has a rib-shaped convex part on the surface of the vibrator and a corresponding concave part, so the air port can be placed in the concave part. When provided, the air openings will not be blocked by the skin of the human body or the fabric covering the hips and ribs, and from this point of view as well, air circulation is excellent.

The dust collecting vibrator 20 has a click 1 as shown in FIG.
1, one side is connected to the air intake port 2, and the other side is a vibrator 21 to 30 that sucks air from various parts inside the clothes.
A vibrator 13 connected to a 1-character joint 12 that branches to
The pipes 21 to 30 further include neck vibrators 21 to 24, arm vibrators 27 to 30, and connection vibrators 25 and 26 connecting these, and each of these pipes is shown in FIG. As shown, they are connected by several T-shaped joints 31 to 34, and by applying negative pressure by the sirocco fan 7, the dust generated from the neck and both arms through the air intake port 2 is removed together with the air. It is designed to be absorbed.

The clean room air cleaner and the in-clothing dust collection vibrator 20 using the same according to the present invention are as follows:
In order to have a smaller and lighter fan 7 and to be able to use it for a long time, it is necessary to reduce the ventilation resistance of the enclosure vibrator 20 according to this embodiment. , a dust collection pipe 20 configured as shown in FIG.
And in order to uniformly suck the air inside the clothes,
15 for neck pipes 21 to 24 on the vibrator length.
mrQ interval, 30m for arm vibes 27-30
It is most appropriate to open the holes at intervals of m. Therefore, the collar opening pipes 21 to 24 have a total of 25 opening holes, and the arm vibrators 27 to 30 have a total of 15 opening holes. By opening the openings 66, in other words, air can be sucked in at a total rate of about ions per minute from the wearer's collar and cuffs.

Regarding the position of the opening hole 66 on the pipe, it should be opened at right angles to the fabric that supports the vibrator so that the hole would not be blocked by the wearer's clothes or skin during work, and should be placed at a right angle to the neck opening. In this embodiment, the pipes 21 to 24 open upward, that is, toward the head, and the arm vibrators 27 to 30 open toward the hands.

The dust collection vibrator 20 is placed inside the wearer's clothes used in a clean room, and the arrangement of pipes inside the clothes is usually of the short-sleeve type shown in FIG. Instead, there are modified embodiments such as a continuous long-sleeved type of clothing as shown in FIG. 5(A), and a long-sleeved type with upper and lower divisions as shown in FIG. 5(B). In these cases, as shown in the same figure (C), the hood part of the clothing
The neck pipes 21 to 24 are attached to the back of the sleeve so that the arm vibrators 27 to 30 are located at the bottom of the sleeve. Since this embodiment is a cleaning garment that is compatible with long-sleeve type, unlike the one shown in Fig. 4, a pipe arrangement using longer connecting pipes 25' and 26' is used, and the inside of the garment is The collection vibrator 20 placed in the figure can be fixed at an appropriate location using a tape 46 and a dot button 47 as shown in FIG.

That is, in order to maintain cleanliness, clothes need to be washed as appropriate and are changed and worn, so even in such cases, the dust collection pipe 20 is arranged so as to be replaceable inside the clothes. It is intended to do so.

Furthermore, by taking measures to attach the dust collecting vibrator 20 as shown in FIG. 5(D), the same dust collecting vibrator 20 can be used for a long-sleeved type cleaning garment with upper and lower divisions as shown in FIG. 3(B).

In the air cleaner main body 1 according to the embodiment shown in FIGS. 1 and 2, the effective specification for air suction is that the motor 8 operates at a low voltage of 3.6 V at a rated temperature of approximately 10° C./min.
was used, so it was designed to withstand this effective specification.

In addition, in view of the need for portability, the motor must be as light as possible, and for example, the brushless motor 8 using Asahi Kasei IFP coils was adopted. Note that for the purpose of suctioning air, convenience of portability, and furthermore a shape structure that fits closely to the human body, the fan 7 to which the motor 8 is attached is a sirocco based on the rotation speed and torque of the motor 8. Moreover, the most suitable shape of the fan 7 was an internal air-core sirocco fan with 15 blades, installed at a slope of 24 degrees, and a diameter from 21 mII+ to 35 m+n.

In FIG. 6(A) and (B), the sirocco The specific shape of the fan 7 is shown.

FIG. 6(A) is a plan view of the Sirotskovian figurine, and FIG. 6(B)
) is its cross-sectional view.

In Fig. 6 (A) and (B), 51 is a shaft axis, 52
is a fan blade, and in this embodiment, the number of blades is 15, and the slope of the installation of the separate 52 is 24''.
is the fan base of the same Scirocco fan 7.

Further, as described above, the glass fiber filter 10 as a filtering member for filtering the sucked air is made so that the material area per unit area is twice the standard size. 99.97 for 3 micromm particles
It is appropriate to use an IEPA filter (mainly made of glass fiber, which is capable of collecting particles of 0.36 mm or more) in view of the capacity of the motor 8 and the characteristics of the fan 7, and in this embodiment, these filters are used. Considering the characteristics of each component, the length shown in Figures 1 and 2 is 157.5mm, the length of the long side is 100.5n+m, the width is 5 (lnm), and the length of the short side is 36.2+nm. , width 53m+n, height 93mm each
The air cleaner body 1 has the shape of a military-style rice bowl, and further,
Regarding each component, as described above, Sirotskov armatures with a diameter of 35 mm and a width of 10.5 mm were used, and for the intake port 2 and the exhaust port 3, diameters of 8 m [11 mm] were used.

Regarding the shape of the air cleaner body 1 according to the present invention, the exhaust port 3 is mounted on the same surface as the intake port 2, contrary to the embodiment shown in FIG. In such a case, while the wearer is moving, the air cleaner body 1 may be placed close to the wearer's body for convenient portability, or when the wearer is sitting on a chair or the like and When working in a location, you can remove it from your body and place it on a desk, etc. to draw air.

A second embodiment of the air cleaner main body 1 constructed in this manner is shown in FIG.

In FIG. 7, the constituent parts of each part are shown with the same symbols as shown in FIG.

The bottom surface of the air cleaner main body 1 according to the second embodiment shown in FIG.
A C adapter connector 5 is arranged on the side surface of the air cleaner body 1.

In addition, when using this embodiment, it is not only possible to simply place it on a desk, table, etc., but also to have a structure in which it is attached to these desks, tables, etc. in advance, and furthermore, the filter 10 can be inserted. Instead, it may be connected directly to the central suction duct in the clean room. In this case, the motor sM of the air cleaner according to this embodiment may be supplied from a battery housed in the battery case part 6 as in this embodiment, but it may also be provided on the wall of the clean room, etc. Alternatively, the power may be supplied from a power terminal connected to the power source.

FIG. 8 is an embodiment view showing a state in which a chair 54 is equipped with a metal fitting 55 for attaching the air cleaner body 1, and a worker wears the air cleaner body 1 and uses the air cleaner body 1 while sitting on the chair 54. In this embodiment, the air cleaner body 1 is attached to the chair 54 on which the wearer sits by means of the metal fittings 55, and there is a vibrator 13 between the wearer and the air cleaner body 1, and an exhaust gas is connected to the air cleaner body 1. A vibrator 42 is attached to each to guide dust from the human body to the wearer's feet.

(Effects of the Invention) According to the present invention, the clean room air cleaner is compact and has a simple structure, is convenient to carry, has a military-style gun shape, and has an outer diameter shape that fits closely to the human body. It can be carried around without hindering the wearer's work efficiency even during work, and the vibrator-like air suction mechanism placed on the bare part and shoulder can be easily integrated into a conventional cleaning case. The cleanliness inside the clean room can be easily improved by adapting the system.

In addition, by making it possible to place the air cleaner next to the worker while working in a clean room,
Particularly when working while sitting, work efficiency can be further improved by providing a special numbering means to the chair or the like.

Furthermore, since the in-clothing dust collection vibrator made of corrugated vibrator material is attached to the air cleaner, the opening of the vibrator will not be blocked even when applying negative pressure inside the clothes to suck air. Coupled with the use of an air cleaner having the appropriate effective specifications, the wearer's workability in a clean room can be significantly improved.

Furthermore, in addition to the combination of this dust collection vibrator and air cleaner, in some cases, the air cleaner may be used alone, such as when it is necessary to transport parts to another location in a clean state. By attaching it to a sealed transport case or the like and blowing purified air into the transport case, the degree of cleanliness during transport from one clean room to another can be improved by about mA.

In addition, the dust collecting vibrator uses a device separately installed in the clean room to discharge dust outside the room, and by connecting the click of the vibrator to the indoor opening of this device, it can directly collect dust emitted from the human body. It can be quickly discharged outside the room. This is particularly convenient for workers who work at a fixed location, and has practical benefits such as not having to worry about the effective time of the batch tree.

[Brief explanation of the drawing]

1(A) and (B) are external shape diagrams of the upper and lower sides of an air cleaner according to an embodiment of the present invention, FIG. 2 is a sectional view of the same air cleaner, and FIG. 3 is a diagram of the present embodiment. Figure 4 shows the specific shape of the HEPA filter and filter case used in the
A) to (D) are modified examples of applying the dust collection vibrator to long-sleeve type clothing with joints or long-sleeved type clothing with upper and lower divisions. Figures 6 (A) and (B) are used in this example. Fig. 7 is a drawing of another embodiment of an air cleaner body configured to suck air by placing it on a peeling surface, etc., and Fig. 8 is a drawing of a specific shape of a sirocco fan that Figure 9 shows a conventional portable air purifier proposed in Japanese Patent Laid-Open No. 108140 of 1983. 1; Air cleaner body, 2; Intake port, 3; Exhaust port, 4
; switch, 5. AC adapter connector, 6; Battery case part, 7; Sirocco fan, 8; Brushless motor, 9; Air outlet, lO; Filter, 11.4
1; Kachito, 12.31-34: Tcho joint, 1
3; Vibrator, 14: Filter case 15; Natsu, 20
; Collection vibrator, 21-24; Neck opening pipe, 25.26
．． 25'26', connection vibe, 27-30: arm vibe, 42; exhaust vibe, 46; tape, 47; dot button, 51: shaft axis, 52; fan blade, 53; fan base, 54; chair, 55 ; Mounting is metal fittings, 66; Opening hole, 71: Filter, 72; Dust collector, 73: Suction pump Figure (B) Figure 5 (A) Figure Figure 5 (B) Figure 5 ( C) (D) Figure (A) (B) Figure 8

Claims (3)

[Claims] (1) It has the shape of a military-style rice bowl, and in the air circulation path along this shape, there is an air intake port provided at the upper end of the military-style rice bowl-shaped shape, and an air intake port provided directly below the air intake port. A brushless motor using a copper-plated sheet coil or the like, a sirocco fan directly connected to the motor, a glass fiber filter installed next to the brushless motor and the sirocco fan, and a lower end of the military-style rice bowl shape. An air cleaner for a clean room characterized by comprising an exhaust port provided therein. (2) The clean room air cleaner according to claim 1, wherein the clean room air cleaner has an integrated battery that is removably installed under the brushless motor and the sirocco fan. (3) One side is connected to the air inlet of the air clear main body, and the other side is connected via a T-joint to a collar opening pipe that sucks air from the collar area inside the clothes. The sleeve pipes are connected to an arm vibrator that sucks air from both sleeves through separate T-joints and connection pipes, and the sleeve pipes are connected to T-joints that are located in the middle of each sleeve. The cuff pipe and the arm pipe each have a diameter of 10
An in-clothing dust collection pipe for an air cleaner according to claims 1 to 4, characterized in that the pipe has a configuration having ~30 air ports.