JP2590388B2 - Dust collector with high performance exhaust filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collector with a high-performance exhaust filter.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional dust collector with a high-performance exhaust filter used in a clean room or the like, 1 is a dust collector outer casing, 2 is a dust collecting opening provided on a lower side surface of the outer casing 1,
3 is the intake port provided in the upper center, and 4 is this intake port 3.
A suction filter connected to the suction port, 5 a dust filter disposed between the dust collection opening 2 and the suction port 3, 6 an upper cover provided on the upper part of the outer casing 1, and 7 a suction blower 4 The column 8 is a high-performance exhaust filter such as a ULPA filter having its upper exhaust side airtightly attached to the upper cover 6 via a packing 9 so that the intake side of the exhaust port 7 communicates with the intake side. A power cord provided through the upper cover 6.
Power switch attached to

In such a dust collector with a high-performance exhaust filter, the air sucked by the suction blower 4 through the dust-collecting opening 2 is collected by the dust filter 5 and the suction blower 4.
The dust reaches the high-performance exhaust filter 8 through the exhaust port 7, and dust particles on the order of μm are adsorbed and then discharged to the outside.

FIG. 4 shows a high-performance exhaust filter 8 shown in FIG. 3 having a bottomed cylindrical shape 16 having an outer peripheral side and an inner peripheral side.
Shows a conventional dust collector with a high-performance exhaust filter using
In this example, an intermediate portion between the outer peripheral lower surface and the inner peripheral lower surface of the high-performance exhaust filter 8 is hermetically fixed to the upper surface of the upper cover 6 via a packing 9.

[0005]

However, in such a conventional dust collector with a high-performance exhaust filter, a power cord 1 is required.
There are many holes such as a hole 0 through the cover 6, a hole for mounting the power switch 11 to the upper cover 6, and other packing mounting holes. On the other hand, the inside of the outer casing 1 is negatively pressured from outside air by the suction blower 4. However, since the space 14 in the upper cover 6 communicates with the exhaust hole 7 of the suction blower 4 and has a high pressure, the suction air leaks to the outside directly through the hole without passing through the high-performance exhaust filters 8 and 16. There is a risk of contamination and contaminating the surrounding clean space and adversely affecting the production.

If the airtightness between the upper cover 6 and the high-performance exhaust filters 8 and 16 by the packing 9 is not perfect,
The air in the upper cover 6 may leak to the outside via the packing 9.

In order to prevent such leakage, it is sufficient to completely seal the hole and completely seal the packing 9. However, this is extremely difficult in terms of structure and cost, and the external environment is limited to the above. A special measuring device such as a particle counter is required to judge whether or not contamination is caused by the leak, and the measurement has a disadvantage that it takes time.

The present invention has been made to eliminate such disadvantages.

[0009]

A dust collector with a high-performance exhaust filter according to the present invention comprises a dust collector outer casing , a dust collecting opening and an intake port provided in the outer casing, and a suction port of a suction blower provided at the intake port. A suction blower attached to the outer casing of the dust collector so as to communicate, a dust collecting filter arranged between a dust collecting opening and an intake port of the outer casing , and a column-shaped high-performance exhaust filter having one end and the other end. An upper cover provided on the outer casing for air-tightly supporting one end of the high-performance exhaust filter by the outer casing, and the other end of the high-performance exhaust filter is air-tightly connected to the exhaust port of the suction blower. a sleeve for a hole for mounting such as a power cord or a power switch provided through the top cover, on the
And a through hole formed in a portion of the outer casing facing a space surrounded by the cover.

[0010] The sleeve is a rubber sleeve.

Further , the high performance exhaust filter of the present invention is provided.
The dust collector consists of a dust collector outer casing and a dust collecting opening provided in this outer casing.
So that the suction port communicates with the suction port.
The suction blower attached to the outer case of the dust collector and the outer case
A dust collection filter placed between the dust collection opening and the air intake
A high performance exhaust filter with a bottomed cylinder having a peripheral side and an inner peripheral side
And the outer periphery of this high-performance exhaust filter
Therefore, the upper cover provided on the outer casing for airtight support
And the inner peripheral side of the high-performance exhaust filter
A sleeve for airtight communication with the exhaust port of the
A power cord or power switch provided through the top cover
The mounting holes for the switch and the upper cover
Through-hole formed in the outer box part facing the enclosed space
And characterized by the following.

[0012] The sleeve is a tubular body.

[0013]

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

In the present invention, as shown in FIG. 1, the outer periphery of one end of the high-performance exhaust filter 8 is hermetically fixed to the upper surface of the upper cover 6 via a packing 9, and the other end of the high-performance exhaust filter 8 is provided. A cylindrical rubber sleeve 1 on the outer circumference
The upper end of rubber sleeve 12 is airtightly closed, the lower end of rubber sleeve 12 is airtightly closed on the outer periphery of suction blower 4 on the side of exhaust port 7, and a through hole 13 is provided on the upper surface of outer casing 1. In the outer casing 1.

Since the dust collector with a high-performance exhaust filter of the present invention has the above-described structure, the space 14 in the upper cover 6 is formed.
Is the exhaust port 7 of the suction blower 4 and the high-performance exhaust filter 8
Is separated from the space 15 communicating with the other end of the upper casing 6 by the rubber sleeve 12 and communicated with the inside of the outer casing 1 through the through-hole 13 so that the pressure is always negative. Although there is a possibility that air may enter the inside from the outside, there is no possibility that air leaks from the space 14 in the upper cover 6 to the outside through the mounting hole of the cord 10 or the seal of the packing 9. Can be wiped out.

FIG . 2 shows a bottomed bottom having an outer peripheral side and an inner peripheral side instead of the high-performance exhaust filter 8 in the first embodiment.
Another embodiment of the present invention using a cylindrical high-performance exhaust filter 16 is shown. In this embodiment, the lower surface on the outer peripheral side of the high-performance exhaust filter 16 is not interposed through the packing 9 without using the rubber sleeve 12. Airtight support on the top of
The lower end of a cylindrical sleeve 17 is hermetically fixed to the outer periphery of the suction blower 4 on the exhaust port 7 side, and the upper end thereof hermetically supports the inner peripheral lower surface of the high-performance exhaust filter 16 via a packing 18. A through hole 13 is provided in the upper surface of the outer casing 1 so that the inside of the upper cover 6 communicates with the outer casing 1.

In this embodiment of the present invention, the space 14 in the upper cover 6 is separated from the space 15 communicating the exhaust port 7 of the suction blower 4 and the other end of the high-performance exhaust filter 8 by a sleeve 17 and a packing 18. Along with
Since there is a constant negative pressure through the inside of the outer casing 1 through the through hole 13, there is a possibility that air may enter the space 14 in the upper cover 6 from the outside, but the air will There is no possibility of leakage, and the above-mentioned disadvantage can be eliminated.

[0018]

As described above, according to the dust collector with a high-performance exhaust filter of the present invention, the air inside the dust collector is high through the through hole of the power cord, the mounting portion of the power switch, and the sealing surface of the filter mounting packing. There is a great advantage that leakage to the outside without passing through the high performance exhaust filter can be prevented, and the installation of the high performance exhaust filter can be simplified and more airtight than before.

[Brief description of the drawings]

FIG. 1 is a sectional view for explaining a dust collector with a high-performance exhaust filter of the present invention.

FIG. 2 is an explanatory sectional view of another embodiment of the present invention.

FIG. 3 is an explanatory sectional view of a conventional dust collector with a high-performance exhaust filter.

FIG. 4 is an explanatory view of another conventional dust collector with a high-performance exhaust filter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dust collector outer casing 2 Opening 3 Inlet 4 Suction blower 5 Dust filter 6 Upper cover 7 Exhaust port 8 Exhaust filter 9 Packing 10 Power cord 11 Power switch 12 Rubber sleeve 13 Through hole 14 Space 15 Space 16 Exhaust filter 17 Sleeve 18 Packing

Claims (4)

(57) [Claims] And 1. A dust collector outside Napishtim- (1), and the cover hood (1) to provided a dust collecting opening (2) and the intake port (3), the suction blower to the air inlet (3) (4) A suction blower (4) attached to the dust collector outer casing (1) so as to communicate with the suction port
And the dust collecting opening (2) and the air inlet (3) of the outer casing (1 ).
Dust collection filter (5) placed between one end and the other end
Columnar high-performance exhaust filter having bets (8) and said outer Napishtim- (1) the one end of the high-performance exhaust filter (8)
After having provided on the outer Napishtim for supporting airtight (1) by
And parts cover (6), a sleeve (12) for allowing communication between the other end of the high-performance exhaust filter (8) hermetically outlet (7) of the suction blower (4), the top cover <br /> bar (6) power cord provided through the (10) or a hole for attachment of the power switch (11) or the like, the top cover <br/> space surrounded by bars (6) (14) And a through-hole (13) formed in a portion of the outer casing (1) facing the dust collector. 2. A dust collector with a high-performance exhaust filter according to claim 1, wherein said sleeve (12) is a rubber sleeve. 3. A dust collector outside Napishtim- (1), and the provided dust collecting opening the cover hood (1) (2) and the intake port (3), the dust collector so as to communicate the suction port to the air inlet a suction blower attached to the cover hood (1) (4), the outer Napishtim- (1) of the dust collection opening (2) and inlet (3) and dust collecting filter which is disposed between (5), and the outer periphery side A high-end exhaust filter (16) having a bottomed section having an inner peripheral side, and the outer casing (1) for hermetically supporting the outer peripheral side of the high-performance exhaust filter (16) by the outer casing (1). Upper cover (6)
And a sleeve (17) for hermetically connecting the inner peripheral side of the high-performance exhaust filter (16) to the exhaust port (7) of the suction blower (4) , and the upper cover (6). Provided power cord (10) or power switch
(11) mounting holes and the upper cover (6)
Outer casing (1) facing space (14) surrounded by
A dust collector with a high-performance exhaust filter, characterized by comprising a through hole (13) formed in the portion (1) . Wherein said sleeve (12) is a high performance exhaust filter with a dust collector according to claim 3, wherein Ru cylindrical body der.