JPH07106190B2 - Vacuum cleaner - Google Patents

Description

TECHNICAL FIELD The present invention relates to an electric vacuum cleaner capable of inhaling both dust and water.

(B) Prior Art For example, Japanese Utility Model Publication No. 41-22873 discloses an electric vacuum cleaner which sucks dust mixed with water as it is and cleans it. And, this one separates dust and moisture sucked in by a separating mechanism attached to the cleaner body from the air, but this separating mechanism is complicated and there is a drawback that it is difficult to manufacture.

(C) Problems to be Solved by the Invention The present invention incorporates a simple structure for separating moisture and dust from suction air to easily clean dust mixed with water, and further to separate this separating mechanism. The purpose of the present invention is to obtain an electric vacuum cleaner that smoothes the flow of suction air that passes through and improves dust collection efficiency.

(D) Means for Solving the Problems An electric vacuum cleaner according to the present invention has a fan motor and a power feeding mechanism built-in, a main body having an intake port on the front surface, and a suction part at the tip, and the front surface of the main body. And a filter and a container for detachably mounting the filter in the dust collecting case. The filter housing is provided on the front side of the front surface of the filter housing to face the suction section. A bottomed cylindrical portion having a bottom surface is provided in a protruding manner, and an air passage hole is formed in a peripheral surface of the bottomed cylindrical portion separated from the front plate in the bottomed cylindrical portion, and the rear surface side of the front plate is provided with the air passage hole. A plurality of filter pressing plates are formed in a radial direction with the bottomed tubular portion as a center, and the filters are arranged on the back surface side of the filter pressing plates.

(E) Action Due to the rotation of the fan motor, dust mixed with water is sucked into the dust collection case together with the suction air, collides with the bottom surface of the bottomed cylindrical part of the filter housing, and the suction speed is reduced, It is separated and dropped into the dust collection case for storage. The suction air from which dust and water have been separated is sucked into the filter housing through the air passage hole of the bottomed tubular portion, is rectified by the filter holding plate so as to expand in the radial direction, and passes through the filter from the entire front surface of the filter. Is sucked by the fan motor and exhausted from the inside of the body.

(F) Example Hereinafter, the present invention will be described by taking a hand-held vacuum cleaner as an example.

(1) is a main body case of the cleaner main body (2), which is composed of a pair of left and right split cases (1a) (1b), a grip portion (3) on the rear upper surface, and a fitting receiving portion (4) on the front surface. Are formed respectively, and an intake port (6) is provided on the front wall surface (5) of the fitting receiving portion (4). A fan casing (7) communicating with the intake port (6) is formed in the main body case (1) by partitioning a device storage chamber (8) with a partition plate (9).
An exhaust port (10) is bored in the left and right side walls of the main body case (1) constituting the fan casing (7), that is, the left and right divided cases (1a) (1b). A small drainage hole (11) communicating with the fan casing (7) is formed on the bottom surface of the main body case (1). Reference numeral (12) is a fan motor, and a device storage chamber (8) for arranging the centrifugal fan (12a) in the fan casing (7) so as to be rotatable
It is stored inside. Reference numeral (13) is a rechargeable battery, which is stored in the device storage chamber (8) below the handle portion (3).
(14) is a power switch, the operation button (14a) of which is projected from the upper surface of the main body case (1) so that the device storage chamber (8)
It is stored inside. (15) is a power-on display light emitting diode, (16) is a printed circuit board on which a control circuit is mounted, and these are partition plates (9) located above the fan casing (7) in the equipment storage chamber (8). It is fixed on the surface.

Then, the intake air sucked into the main body (2) through the intake port (6) is discharged outside the machine through the fan casing (7) through the exhaust port (10) and does not enter the device storage chamber (8). Absent.

(17) is a moisture recovery dust case detachably attached to the front part of the main body (2), and has a fitting opening (18) fitted to the fitting receiving part (4) in the rear part and at the front. It has a tubular shape with a diameter gradually decreasing toward the inside so that it can store not only dust but also water inside, and further has a suction tube (19) at the front end.

The wide suction nozzle (20) is detachably attached to the suction cylinder (19), but a suction nozzle having another shape may be attached depending on a cleaning place or the like. A water drainage hole (21) is provided in a front end portion below the suction cylinder (19) of the dust collection case (17), and a screw-in type transparent cap (22) is provided in the water drainage hole (21). It is detachably attached. Also (2
3) is a push button of a clamp device that engages the dust collection case (17) with the main body (2), and if pressed, the dust collection case (17)
Can be detached from the body (2). (19a) is the suction cylinder (1
9) Check valve made of synthetic rubber plate.

(24) is a filter for separating dust and suction air, and is composed of a member having a plate thickness obtained by chemically treating open-cell urethane foam. (25) is a filter housing to which the filter (24) is detachably attached, and the dust collection case (1
7) A filter housing that has a peripheral frame (26) that fits inside and has a front plate (27) covering the front and a retaining collar (28) for the filter (24) around the rear opening edge. A part (29) and a front part (29) projecting further forward from the central part of the front plate (27), having a bottom surface (30) for collision of water and dust at the front end and having an air passage hole (31) formed on the peripheral surface. A bottom cylindrical portion (32), and a sealing tongue (33) is provided around the outer peripheral edge of the peripheral frame (26). The filter (24) is arranged so as to cover the intake port (6) by fitting the filter housing (25) through the fitting opening (18) and mounting it in the dust collection case (17). .
(34) ... are the bottomed cylindrical portion (32) on the inner surface of the front plate (27).
The filter (24) protruding in the radial direction centered on the
It is a filter holding plate that holds down the air, and also acts as a rectifying plate for the suction air.
Is supplied over the entire front surface of the.

With the above configuration, when the handle portion (3) of the main body (2) is held by hand and the switch operation button (14a) is pressed, power is supplied from the rechargeable battery (13) and the light emitting diode (15) lights up. The fan moke (12) rotates at high speed. When cleaning dust mixed with water, the water and dust are sucked together with the suction air through the wide suction nozzle (20). Moisture and dust sucked into the moisture recovery dust collection case (17) collide with the bottom surface (30) of the bottomed tubular portion (32) of the filter housing (25), the suction speed is reduced, and separated from the suction air. And falls into the dust collection case (17) to be stored. The intake air enters the filter housing (25) through the air passage hole (31),
The filter holding plate (34) arranged in the radial direction is rectified so as to expand in the radial direction, and the filter (24)
It evenly hits the entire surface of the fan, passes through the entire area of the filter (24), is guided to the fan casing (7) in the main body (2) through the intake port (6), and is discharged from the exhaust port (10). Exhausted to the outside. Here, even if the separation on the bottom surface (30) is incomplete, the filter (24) separates water and (fine) dust, and at this time, the suction air is collected from the entire front surface of the filter (24). Since it passes through (24), the filter (24) does not become clogged, the suction efficiency does not decrease for a long time, and the suction air is rectified by the filter retainer plate (24) to swirl in front of the filter (24). Since no noise is generated, no abnormal noise is generated by the vortex flow. In addition, the separation of water in the filter (24) is not complete, and even if water is sucked into the fan casing (7), it does not enter the device storage chamber (8), and the fan mower (12) and battery (13) ) Etc. are not damaged by the adhesion of water. Then, the water in the fan casing (7) is discharged to the outside of the machine through the water drain hole (11) by the exhaust pressure of the fan (12a). Also, the water stored in the dust collection case (17) can be confirmed with the transparent cap (22), and after the cleaner is used, the cap (22) can be removed and drained for easy draining work. Never store as stored.

To dispose of dust, press the push button (23) to remove the moisture collection dust collecting case (17) from the main body (2), remove the filter housing (25), and clean the filter by storing the filter (24). Remove from body (25). Further, when not in use, power is supplied to the rechargeable battery (13) from a charging adapter (not shown).

Further, FIG. 5 shows the filter housing (2
5 '), in the same figure, the filter housing (25)
The same parts as those in are denoted by the same reference numerals and the description thereof will be omitted. In the figure, (40) is a rear frame body attached to the rear opening of the filter storage part (29), and is the dust collection case (17).
A sealing tongue piece (33 ') that goes inside is provided around the filter (24), and the filter (24) is sandwiched between the filter holding plate (34) of the filter storage part (29) and the rear frame body (40). Then it is installed.

(G) Effect of the Invention According to the present invention, as described above, the filter housing is provided with the bottomed cylindrical portion having the bottom surface facing the suction portion, and the tip end side peripheral surface of the bottomed cylindrical portion. An air passage hole is formed.

That is, since the filter housing has a bottomed cylindrical portion having an air passage hole on the peripheral surface separated from the front surface of the housing, the cleaner main body is set up with the suction portion upward. However, since the water surface is below the air passage hole, the water in the dust collection case does not flow out through the filter, and it has an optimal structure for cleaning dust containing water.

Further, the moisture and dust that have passed through the suction portion collide with the bottom surface of the bottomed tubular portion and fall into the dust collection case. On the other hand, the dust that cannot be completely dropped is sucked by the air passage holes formed in the peripheral surface of the bottomed tubular portion, and separated from the sucked air in the filter. Here, since the suction air collides with the bottom surface of the bottomed tubular portion immediately after passing through the suction portion and is sucked by the air passage holes formed in the peripheral surface of the bottomed tubular portion, the suction flow path is short,
Since it is simple, a strong suction force can be obtained. Therefore, it is possible to provide an electric vacuum cleaner having a strong suction force and capable of sucking both moisture and dust.

Then, since moisture and large dust collide with the bottom surface of the filter storage body and fall into the moisture recovery dust collection case, it is only necessary to separate the dust that could not be completely dropped by the filter from the suction air, and moreover, enter the filter storage body. The suction air that has been sucked in is dispersed by the filter holding plate over the entire front surface of the filter,
Since the filter passes through the entire area of the filter, the filter is less likely to be clogged, the dust collection efficiency does not decrease over a long period of time, the number of times of cleaning the filter is reduced, and dust containing water can be cleaned, so that the range of use of the vacuum cleaner is widened.

[Brief description of drawings]

Each of the drawings shows an embodiment of the hand-held electric vacuum cleaner of the present invention. Fig. 1 is a sectional view, Fig. 2 is a perspective view, Fig. 3 is an exploded view, and Fig. 4 is an exploded perspective view of a filter housing. FIG. 5 is an exploded perspective view of a filter housing according to another embodiment. (2) …… Vacuum cleaner body, (6) …… Intake port, (17) ……
Moisture collection dust case, (19) …… Suction tube, (24) …… Filter, (25) (25 ′) …… Filter housing, (3
1) …… Air passage hole, (32) …… Bottomed cylinder, (34) ……
Filter holding plate.

Claims (1)

[Claims] 1. A main body having a fan motor and a power feeding mechanism built-in, having an intake port on the front surface, a dust collection case having a suction portion at the tip and mounted on the front surface of the main body, and the dust collection. It is composed of a filter detachably mounted in the case and a storage body for the filter, and a bottomed cylindrical portion having a bottom surface facing the suction portion is provided on the front side of the front plate of the filter storage body, In the bottomed tubular portion, an air passage hole is formed in a peripheral surface of the filter housing separated from the front plate, and a plurality of air passage holes are formed on the back side of the front plate in a radial direction with the bottomed tubular portion as a center. An electric vacuum cleaner, wherein a filter holding plate is formed, and the filter is arranged on the back side of the filter holding plate.