JPH11276831A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clean a prefilter installed on the windward side of a main filter simply. SOLUTION: A cover body 24 is fitted to a front case 1 attachably/detachably to cover a longitudinal opening 20 formed on the side of the front case 1. A narrow slit 28 is formed oppositely to the opening 20 in the cover body 24, and a prefilter 19 is passed through the slit 28. When the prefilter 19 is drawn out, the periphery of the slit 28 contacts the prefilter 19 slidingly to scrape off coarse dust adherent to the prefilter 19. Namely, the periphery of the slit 28 becomes a brush piece 29 as a cleaning means. In this way, when the prefilter is drawn out, the prefilter can be cleaned automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier that purifies air sucked into a main body case from an intake port by a main filter and then discharges the air from an exhaust port.

[0002]

2. Description of the Related Art Conventionally, if an air purifier attempts to capture dust in the air sucked from an air inlet only with a main filter, the air filter becomes clogged in a short time because coarse to fine dust adheres to the main filter. The main filter had to be replaced in a short time. Therefore, it is general to provide a pre-filter on the windward side of the main filter, and remove coarse dust contained in the air with the pre-filter in advance.

[0003] If the main filter is clogged and the dust-capturing ability is reduced, it may be replaced with a new one. However, the pre-filter is generally regenerated and used. It was necessary to clean the entangled dust by brushing it off with a brush or the like, sucking it with a vacuum cleaner, washing it with water, etc., which was troublesome.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide an air purifier capable of easily cleaning a pre-filter.

[0005]

According to the present invention, the air sucked into the main body case from the intake port is purified by the main filter and then discharged from the exhaust port. The air can be taken in and out of the main body case on the windward side of the main filter. And a cleaning means for removing coarse dust adhering to the pre-filter when the pre-filter is pulled out from the main body case.

With this configuration, when the pre-filter is pulled out from the main body case, dust attached to the pre-filter can be automatically removed.

[0007] The cleaning means is provided by providing a brush piece in sliding contact with the prefilter near the entrance and exit of the prefilter provided in the main body case. Then, a cover body for storing the coarse dust removed by the brush pieces is detachably attached to the main body case near the entrance.

With this configuration, the processing of the scraped-off coarse dust can be easily performed by removing the cover from the main body case.

Further, the brush piece is formed integrally with the cover body. Such a configuration simplifies the structure,
When the cover body is removed, inspection of the brush pieces can be performed at the same time.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An air purifier according to the present invention will be described with reference to FIGS. The main case of the air purifier consists of the front case 1, the rear case 2, and the upper case 3.
And the combination of The front case 1 is provided with a slit-shaped intake port 4 on the front surface thereof. The upper case 3 is provided with an exhaust port 5,
A handle 6 is attached.

The inside of the main body case is partitioned back and forth by a partition plate 7, and a motor 8 is fixed to the center of the partition plate 7,
A blower fan 9 driven by a motor 8 is positioned behind the partitioned space. The partition plate 7 is provided with a ventilation port 10 arranged around the motor 8 and a peripheral wall 1 of a fan casing 11 of the blower fan 9.
2 are integrally formed. The air sucked into the fan casing 11 from the ventilation port 10 by the rotation of the blower fan 9 is discharged from the exhaust port 5.

A main filter 13 is provided in front of the space partitioned by the partition plate 7 so as to cover the ventilation opening 10. The main filter 13 is a so-called zigzag electret filter 1 made of a dielectric material and charged in advance.
4 and an activated carbon filter 15.
Ribs 16 and 17 for supporting the main filter 13 are formed on the partition plate 7. Reference numeral 18 denotes a claw for holding the main filter 13 so as not to come off, and is formed integrally with the partition plate 7.

On the side surface of the front case 1, a vertically elongated entrance / exit 20 of a prefilter described later is formed. Reference numeral 19 denotes a pre-filter, which is disposed on the windward side of the main filter 13 and on the back side of the intake port 4. You. Reference numeral 22 denotes a groove that guides the upper and lower ends of the pre-filter 19 when the pre-filter 19 is taken in and out, and is formed in the front case 1 (see FIG. 3). When the pre-filter 19 is inserted into the main body case through the entrance 20, the entire surface of the intake port 4 is covered by the pre-filter 19. A handle 23 for taking in and out is integrally formed at one end of the pre-filter frame.

A cover 24 is detachably attached to the front case 1 so as to cover the entrance 20. Cover body 24
Inserts a bent piece 25 provided at one end thereof into a slit 26 formed at the front surface of the front case 1 and elastically engages a plurality of claws 27 formed at the other end thereof with engagement holes formed at the front case 1. By doing so, it is attached to the front case 1 and detached by removing the engagement of the claws 27.

The cover body 24 has a slit 28 narrower than the entrance and exit 20 of the pre-filter 19, and the pre-filter 19 is put in and out through the slit 28 and the entrance 20. The width of the slit 28 is determined when the pre-filter 19 is pulled out of the main body case.
It is set to be thin so that coarse dust adhering to the pre-filter in sliding contact with the pre-filter 19 can be removed. That is, the periphery of the slit 28 constitutes a brush piece 29 serving as a cleaning means for removing the coarse dust adhered to the pre-filter. In addition, the cover body 24 has a configuration in which the storage room 30 is configured so as to store coarse dust that has fallen off with the front case 1.

In this configuration, when the motor 8 is driven, the air sucked from the intake port 4 by the rotation of the blower fan 9 is guided to the main filter 13 through the pre-filter 19, and the dust contained in the air is removed. Is removed from the exhaust port 5 through the ventilation port 10 and the fan casing 11. The pre-filter 19 captures coarse dust among dust in the air in advance, and the main filter 13 captures fine dust that cannot be captured by the pre-filter.

If used, coarse dust adheres to the pre-filter 19, and it becomes necessary to clean the filter. In this case, when the pre-filter 19 is pulled out of the main body case with the handle 23, the brush piece 29 slides on the pre-filter 19 as described above to remove the coarse dust adhered to the pre-filter. The scraped-off dust T is stored in the storage room 30. By repeating insertion and removal of the pre-filter 19 several times, coarse dust adhering to the pre-filter is sufficiently removed.
After cleaning the pre-filter 19 in this way, the cover 2
4 is removed, the dust stored therein is discarded, and a series of cleaning is completed. In addition, after removing the cover body 24 and discarding the coarse dust, the brush piece 29 can be inspected at the same time, for example, by removing the clogging of the slit 28.

In the above embodiment, the brush piece 29 is formed integrally with the cover 24. However, an elastic spatula may be attached to the cover.

[0019]

According to the present invention, a cleaning means is provided for removing coarse dust adhering to the pre-filter when the pre-filter is pulled out from the main body case. Dust that has been removed can be automatically removed and the pre-filter can be easily cleaned.

A brush is provided in the vicinity of the entrance of the pre-filter provided in the main body case in such a manner as to be in contact with the pre-filter and provided as a cleaning means. Since it is detachably attached to the nearby main body case, the processing of the scraped-off coarse dust can be easily performed by removing the cover body from the main body case.

Further, since the brush piece is integrally formed with the cover body, the structure is simplified, and the brush piece can be inspected at the same time when the cover body is removed.

[Brief description of the drawings]

FIG. 1 is a front view of an air purifier of the present invention.

FIG. 2 is a cross-sectional view of the air purifier.

FIG. 3 is a vertical sectional view of the air purifier.

FIG. 4 is an enlarged cross-sectional view of a main part of the air purifier.

[Explanation of symbols]

 Reference Signs List 4 intake port 1 front case (body case) 2 rear case (body case) 3 upper case (body case) 13 main filter 5 exhaust port 19 pre-filter 20 doorway 29 brush piece (cleaning means) 28 slit 24 cover body 30 storage room

Claims (4)

[Claims] 1. A method in which air sucked into a main body case from an intake port is purified by a main filter and then discharged from an exhaust port. An air purifier provided with cleaning means for removing coarse dust adhering to a pre-filter when the filter is pulled out of a main body case. 2. The air purifier according to claim 1, wherein a brush piece is provided near the entrance and exit of the pre-filter provided in the main body case so as to be in sliding contact with the pre-filter serving as the cleaning means. 3. The air purifier according to claim 2, wherein a cover body for storing the coarse dust removed by the cleaning means is detachably attached to the main body case near the entrance. 4. The air purifier according to claim 3, wherein said brush piece is formed integrally with said cover body.