JP2003181232A - Dust collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collector which suppresses the quantity of dust stored in a primary filter while preventing the clogging of a filter of main body side and saves the handling time of disposal and exchange. <P>SOLUTION: A partition wall 10 which partitions the inside of the upper tank 9 into upper and lower parts is formed on the upper side position than a suction port 3 in the upper tank 9 which forms a tank 2, a cylinder body 11 which communicates the upper and lower parts in the tank 2 is disposed on the center of a partition wall 10, and a paper filter 22 which is connected with the cylinder body 11 and filtrates air to the filter 14 side is disposed between the partition wall 10 and the filter 14. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collector in which a main body equipped with a motor and a fan is placed on an upper portion of a tank having a suction port on its side surface.

[0002]

2. Description of the Related Art In a dust collector, a main body equipped with a motor and a fan is placed on the upper portion of a tank having a suction port, and the fan is rotated by driving the motor to suck air into the tank. It passes through the body and is discharged to the outside. A filter is provided on the ventilation path to the main body in the upper part of the tank, and when air containing dust passes through the filter, the dust adheres to the filter or falls into the tank to collect dust. It is possible.

[0003]

In the above dust collector, since the filter is immediately clogged, it is necessary to frequently clean and replace the filter. Therefore, a structure is also adopted in which a primary filter such as a paper pack is attached to the suction port in the tank to reduce the amount of dust adhering to the downstream filter.
However, the amount of dust stored in the primary filter increases correspondingly, and eventually the time and effort for discarding or replacing the dust in the primary filter increases. Also, on the tank side, the suction port is provided in an inclined posture along the tangential direction of the tank, and the sucked air is swirled along the inner peripheral surface of the tank before being sent to the main body side, so that dust can be efficiently stored inside the tank. A so-called cyclone structure in which the paper is dropped is sometimes used, but when a paper pack is attached to the suction port, the cyclone function is impaired.

Therefore, the invention according to claim 1 prevents clogging of the filter on the main body side, and also suppresses the amount of dust accumulated in the primary filter to reduce the time for disposal and replacement of both filters. The purpose is to provide.

[0005]

In order to achieve the above object, the invention according to claim 1 forms a partition wall in the tank above and below the suction port to partition the tank vertically.
The partition wall is formed with a communication port that communicates the upper and lower sides in the tank, and a primary filter that is connected to the communication port and filters air to the filter side is provided between the partition wall and the filter. It is what In addition to the object of claim 1, the invention according to claim 2 has an opening that can be opened and closed arbitrarily except for the connection part to the communication port, in order to easily dispose of dust in the primary filter. It is a paper filter having parts. The invention according to claim 3 is
In addition to the object of claim 1 or 2, in order to efficiently separate the dust in the tank and reduce the amount of dust collected by the primary filter or the filter, the air sucked into the tank from the suction port is the inner circumference of the tank. The guide means is provided so as to be rotatable along the surface.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional view of the dust collector. The dust collector 1 includes a tank 2 having a suction port 3 to which a suction hose can be connected, and a main body 4 mounted above the tank 2 and having a motor 5 and a fan 6. Consists of. The tank 2 has a bottomed circular bottom tank 7 having casters 8, 8 ...
And a cylindrical upper tank 9 that is coaxially set above the lower tank 7, and a hook (not shown) provided on the side of the upper tank 9 is hooked on the peripheral edge of the main body 4, thereby Can be fixed to the tank 2. The suction port 3 employs a structure in which the upper tank 9 is connected in an inclined posture along the tangential direction, as a guide means, not in the normal radial direction. In the upper tank 9, above the suction port 3, A partition wall 10 is formed to partition the inside of the tank 2 into upper and lower parts.
At the center of 0, a cylindrical body 11 is fixed as a communication port for communicating the upper and lower sides of the tank 2. Further, an upper end of a cylindrical internal tank 12 which is concentric with the cylindrical body 11 and whose bottom is closed is connected to the lower surface of the partition wall 10 so that the inside and outside of the internal tank 12 communicate with the upper side surface of the internal tank 12. The internal suction port 13 that allows the internal tank 12 to also serve as a guide means.
It is provided in an inclined posture along the tangential direction of.

Reference numeral 14 denotes a filter, which has a mortar-like outer shape whose diameter gradually decreases as it goes downward, and which has a top plate 15 at an upper end, a bottom plate 16 at a lower end, and a circumferential direction between both plates 15, 16. Filtering members 17 arranged in parallel,
., And by fixing the main body 4 with the top plate 15 hooked to the upper opening of the upper tank 9, the filter 14 is narrowed in a posture of vertically partitioning the space above the partition wall 10. Be held. Above the filter 14, the case 18 of the main body 4 accommodating the motor 5 and the fan 6 projects downward, and a plurality of suction holes 19, 19 ... Are formed in the lower surface of the case 18. In addition, 20 is an exhaust port opened downward to the main body 4 at the outer peripheral position of the case 18, and 21 is a ventilation path for communicating the intake holes 19, 19 ... With the exhaust port 20 via the fan 6.

Then, in the upper tank 9, the partition wall 10
A paper filter 22 as a primary filter is provided between the filter 14 and the filter 14. As shown in FIG. 2 (A), the paper filter 22 has openings 24,
In the center of the cylindrical filter body 23 in which 24 are formed,
A rubber sheet 26 having a mounting hole 25 and a through hole concentric with the mounting hole 25 and a cardboard connector 2
7 and 7 are bonded and both ends thereof are bent respectively.
Therefore, the folded both ends of the filter body 23 are folded as shown in FIG.
The openings 24, 24 can be temporarily closed by sandwiching each with a dedicated clamper or a commercially available clip or the like. Here, the cylindrical body 11 protruding above the partition wall 10
The paper filter 22 is detachably attached to the tubular body 11 by fitting the attachment hole 25 together with the central rubber sheet 26 and the connector 27.

In the dust collector 1 configured as described above, when a switch (not shown) provided on the main body 4 is turned on, the motor 5 is driven and the fan 6 is rotated. Then, outside air is sucked into the tank 2 from the suction port 3 via the suction hose or the like, but since the suction port 3 is inclined along the tangential direction of the lower tank 7, the air flows in the upper tank 9 and the lower tank 7. After turning once along the inner peripheral surface of the tank 7, it is sucked into the internal tank 12 from the internal suction port 13. Due to the swirling of the air, the relatively heavy dust first falls into the lower tank 7 and is separated. Then, even in the internal tank 12, after the air once swirls along the inner peripheral surface of the internal tank 12 due to the inclined posture of the internal suction port 13,
It enters into the paper filter 22 from the cylinder 11. Due to the swirling of the air in the internal tank 12, among the dust that has entered the internal tank 12 together with the air, a relatively heavy one falls into the internal tank 12 and is further separated.

The air thus entering the paper filter 22 passes through the paper filter 22 and then the main body 4
Filter members 17, 1 of the filter 14 on the ventilation path to the side
After passing through 7 ..., From the suction holes 19, 19 ...
8 into the main body 4 through the ventilation passage 21 and the exhaust port 20.
Is discharged to the outside. Therefore, only the fine dust that has passed through the lower tank 7 and the internal tank 12 is stored in the paper filter 22 in the upper tank 9 or adheres to the filtering members 17, 17 of the filter 14 to be collected. When the amount of dust stored in the paper filter 22 becomes full, the paper filter 22 can be removed from the tubular body 11 by removing the main body 4 and the filter 14 from the upper tank 9. Therefore, if one or both openings 24 of the filter body 23 are opened and dust is discarded, the paper filter 22 can be attached to the cylindrical body 11 again and reused. When the number of uses increases and the filter body 23 becomes clogged,
The paper filter 22 may be replaced together.

As described above, according to the dust collector 1 of the above-described embodiment,
A partition wall 10 is formed in the upper tank 9 above and below the suction port 3 to partition the tank 2 into upper and lower parts.
And a paper filter 22 connected between the partition wall 10 and the filter 14 for filtering air to the filter 14 side, provided between the partition wall 10 and the filter 14. Then, only the fine dust that has passed through the lower tank 7 and the internal tank 12 is captured by the paper filter 22 or the filter 14. Therefore, the amount of dust adhering to the filter members 17, 17 ... Of the filter 14 is reduced, clogging is prevented, and cleaning of the filter 14 and the filter member 17 are prevented.
There is almost no need for replacement. Similarly, since the amount of dust stored in the paper filter 22 is also reduced, it is possible to reduce the number of times the paper filter 22 is discarded or replaced.

Further, since the primary filter is the paper filter 22 having the openings 24, 24 which can be arbitrarily opened and closed other than the connecting portion to the cylindrical body 11, the dust can be easily discarded in the primary filter. it can. Further, a guide means for inclining the suction port 3 along the tangential direction of the upper tank 9 is provided so that the air sucked into the tank 2 from the suction port 3 swirls along the inner peripheral surfaces of the upper tank 9 and the lower tank 7. Since it is possible, a so-called cyclone structure is used to efficiently separate dust in the tank 2, and the paper filter 22
The amount of dust collected by the filter 14 can be reduced.
In particular, here, the double cyclone structure in which the internal tanks 12 are combined together makes it possible to separate dust more efficiently.

Although a paper filter is used as the primary filter in the above embodiment, a cloth filter or the like may be used as long as it is possible to filter air by ensuring ventilation to the filter side. The parts need not be provided at both ends of the filter body, and only one of them may be provided. Further, the communication port is not limited to the cylindrical body as long as the primary filter can be connected, and may be a simple through hole. Further, the tank 2 is divided into the upper and lower tanks 7 and 9, but may be a single tank.

On the other hand, as the guide means for forming the cyclone structure, in addition to the suction port provided along the tangential direction of the tank as in the above-mentioned embodiment, as shown in FIG. 3, the suction means formed in the normal radial direction. A guide plate 30 for guiding air along the inner peripheral surface of the upper tank 9 may be provided on the outlet side of the port 29. This can be applied to the inner tank 12 as well, but at least as shown in FIG.
In this case, since the suction port 29 is provided in the radial direction of the tank as in the conventional case, connection and disconnection of the suction hose can be performed more easily and workability is improved as compared with the case where the suction port is provided in the tangential direction. Further, in the above-described embodiment, the cyclone structure is double formed in the lower tank 7, but the internal tank 12 may be omitted and the cyclone structure may be one. Needless to say, even in a normal form without using such guide means, the amount of dust to the primary filter can be reduced by the partition wall and the communication port of the present invention.

[0015]

According to the invention described in claim 1, the tank is provided with the partition wall and the communication port, and the primary filter is provided between the partition wall and the filter. Only the fine dust that has passed is captured by the primary filter or filter. Therefore, the amount of dust adhering to the filter is reduced, clogging is prevented, and there is almost no need to clean or replace the filter. Similarly, since the amount of dust stored in the primary filter is reduced, the number of times of discarding or replacement in the primary filter can be reduced. According to the invention of claim 2, in addition to the effect of claim 1, the primary filter is a paper filter having an opening portion that can be arbitrarily opened and closed other than the connection portion to the communication port. It is possible to easily dispose of dust in the. According to the invention of claim 3, in addition to the effect of claim 1 or 2, by providing the guide means by which the air sucked into the tank from the suction port can be swirled along the inner peripheral surface of the tank. The dust can be efficiently separated in the tank to reduce the amount of dust collected by the primary filter or the filter.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a dust collector.

FIG. 2A is a perspective view of a paper filter. (B) It is a perspective view of a paper filter.

FIG. 3 is a schematic cross-sectional view of a tank showing a modification of guide means.

[Explanation of symbols]

1 ... Dust collector, 2 ... Tank, 3 ... Suction port, 4 ... Main body, 7 ... Lower tank, 9 ... Upper tank, 10 ... Partition wall, 11 ... Cylinder, 12 ... Internal tank , 13 ··· Internal suction port, 14 · · Filter, 17 · · Filtration member, 22 ·
・ Paper filter, 23 ・ ・ Filter body.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4D031 AC04 BA01 BA06 DA01 DA05                 4D058 JA03 KB11 QA09 QA11 QA21                       SA20 UA25

Claims (3)

[Claims] 1. An upper part of a tank having a suction port on a side surface,
A main body equipped with a motor and a fan is placed, and air is sucked into the tank through the suction port and allowed to pass through the main body to be discharged to the outside, while a filter is provided on the ventilation path to the main body above the tank. In the dust collector provided with, in the tank, a partition wall that partitions the inside of the tank vertically above the suction port is formed, and the partition wall has a communication port that communicates the top and bottom of the tank. A dust collector formed between the partition wall and the filter, the primary filter being connected to the communication port and filtering air to the filter side. 2. The dust collector according to claim 1, wherein the primary filter is a paper filter having an opening that can be opened and closed arbitrarily other than a connection portion to the communication port. 3. The dust collector according to claim 1 or 2, further comprising guide means for allowing air sucked into the tank from the suction port to swirl along the inner peripheral surface of the tank.