JPH0795987B2 - Vacuum cleaner - Google Patents

Description

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

(B) Conventional Technology For example, Japanese Patent Application Laid-Open No. 60-188124 discloses an electric vacuum cleaner that sucks dust mixed with water as it is and cleans it. In this conventional example, a dust collecting case is attached to the front surface of a cleaner body having a fan motor built-in, and a mechanism for separating moisture and dust from suction air is housed in the dust collecting case. It is complicated, and if it is not completely separated, water will get into the cleaner body, causing a failure such as a short circuit.

(C) Problems to be Solved by the Invention The present invention reliably separates dust mixed with moisture from the suction air and incorporates a separation mechanism having a simple structure in which the separated dust does not adhere to The purpose is to obtain an easy-to-use electric vacuum cleaner that can easily clean mixed dust.

(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 section at the tip, and the front surface of the main body A dust collection case that is detachably attached, a filter that is detachably attached inside the dust collection case so as to cover the intake port, and a storage body thereof.
In this filter housing body, a bottomed cylinder having a bottom plate facing the suction part is provided in a protruding manner, and in this bottomed cylinder, an air passage hole is formed in a peripheral surface separated from the front surface of the filter housing. In addition, the surface of the bottom plate is uneven.

(E) Action Due to the rotation of the fan motor, the dust mixed with water is sucked into the dust collection case together with the suction air, collides with the bottom plate surface of the filter housing and the suction speed is reduced, and separated from the suction air. It is dropped and stored in the dust collection case.
At this time, since the surface of the bottom plate is uneven,
Dust mixed with water does not stick to the surface and remain. The suction air from which dust and water have been separated is sucked by the fan motor through the filter and exhausted from the inside of the main body to the outside.

(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), a grip portion (3) is formed on the upper surface of the rear portion, and a fitting receiving portion (4) is formed on the front portion, and the fitting receiving portion (4) is formed. An intake port (6) is provided on the front wall surface (5). And the main body case (1)
A fan casing (7) communicating with the intake port (6) is formed therein. Exhaust ports (8) communicating with the fan casing (7) on the left and right side walls of the body case (1)
Has been drilled. In addition, a drainage small hole (9) communicating with the fan casing (7) is formed on the bottom surface of the main body case (1).
Has been drilled. (10) is a fan motor, and the centrifugal fan (10a) is housed in the main body case (1) so as to be rotatably arranged in the fan casing (7). Reference numeral (11) is a rechargeable battery, which is housed in the main body case (1) below the handle (3). Reference numeral (12) is a power switch, which is housed in the main body case (1) with its operation button (12a) protruding from the upper surface. (13) is a power-on display light emitting diode, and (14) is a printed circuit board on which a control circuit is mounted.

Reference numeral (15) is a dust case detachably attached to the front portion of the main body (2), which has a fitting opening (16) for fitting with the fitting receiving portion (4) in the rear portion and faces forward. It has a tubular shape with a gradually decreasing diameter so that it can store not only dust but also water inside, and further has a suction cylinder (17) as a suction part at the front end. A wide suction nozzle (18) having an outer shape connected to the dust collection case (15) is detachably attached to the suction cylinder (17). Below the opening end (17a) of the suction cylinder (17) in the dust collection case (15), a partition wall (19) extending over the left and right inner side walls of the dust collection case (15) is provided with the rear fitting opening ( 13), it is formed in a substantially horizontal state, and the partition wall (19) partitions the lower part of the dust collection case (15) into a water retention chamber (20). Then, when the main body (2) is tilted forward while the hand-held vacuum cleaner is used, the water stored therein is blocked by the partition wall (19) and does not flow back from the suction cylinder (17). ing. Further, (21) is a push button of a clamp device for engaging the dust collecting case (15) with the main body (2), and the dust collecting case (15) can be detached from the main body (2) by pressing. (2
2) is a check valve made of a synthetic rubber plate for the suction cylinder (17).

(23) is a filter that separates dust and suction air, and is composed of a member having a plate thickness obtained by chemically treating open-cell urethane foam. Reference numeral (24) is a filter housing in which the filter (23) is detachably mounted, and the dust collection case (15) is provided.
A filter housing part (27) consisting of a peripheral frame (25) that fits inside and a front plate (26), and a front end projecting further forward from the center part of the front plate (26) for collision of water and dust. It has a bottom plate (28) and an air passage hole (29)
And a rib (31) is formed on the central surface of the bottom plate (28) to make the surface of the bottom plate (28) uneven. Further, a sealing material (32) is provided around the outer peripheral edge of the peripheral frame (25). And the filter (23) is arranged so as to cover the intake port (6) by fitting the filter housing (24) from the fitting opening (13) and mounting it in the dust collection case (15), At this time, the surface of the bottom plate (28) faces the suction cylinder (17). Reference numeral (33) is a holding plate of the filter (23) protruding radially from the bottomed cylindrical body (30) on the inner surface of the front plate (26) and also functions as a rectifying plate for the intake air.

With the above configuration, when the handle portion (3) of the main body (2) is held by hand and the switch operation button (12a) is pressed, power is supplied from the rechargeable battery (11) and the light emitting diode (13) lights up. The fan motor (10) 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 (18). The moisture and dust sucked into the dust collection case (15) collide with the bottom plate (28) of the bottomed tubular body (30) of the filter housing (24), the suction speed is reduced, and the suction air is separated. It is dropped and stored in the dust collection case (15). Here, since the surface of the bottom plate (28) has an uneven shape due to the ribs (31), even dust containing water cannot follow the surface exactly, and therefore the dust cannot be absorbed by the bottom plate (28). 28) Make sure that it falls into the dust collection case (15) without sticking to the surface. The intake air is filtered through the air passage hole (29) (2
3) It is guided into the fan casing (7) in the main body (2) through the intake port (6), and is exhausted out of the machine through the exhaust port (8). Here, even if the bottom plate (28) is not completely separated, the filter (23) separates water and (fine) dust, and the filter (23) does not completely remove water. , Even if moisture is sucked into the fan casing (7), the drainage small hole (9) is generated by the exhaust pressure of the fan (10a).
Drained out of the plane. Further, a large amount of water can be stored until the water level line reaches the upper end of the water retaining chamber (20) in the dust collection case (15), that is, the upper end portion of the partition wall (19).

In addition, the dust disposal work and the water disposal work are performed by pressing the push button (21) to remove the case (15) from the main body (2) and the filter housing (24), and to clean the filter, filter the filter (23). Remove from the storage (24). Further, when not in use, the rechargeable battery (11) is powered by a charging adapter (not shown).

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

That is, since the filter housing has a bottomed cylindrical body having an air passage hole on the peripheral surface separated from the front surface of the housing, the cleaner main body is erected vertically with the suction part facing upward. Even at this time, the water surface is below the air passage hole, and the water in the dust collection case does not flow out through the filter, which is an optimal structure for cleaning dust containing water.

Further, the water and dust that have passed through the suction portion including the suction nozzle and the suction cylinder collide with the bottom plate of the bottomed cylindrical body 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 cylinder,
Separated from intake air at the filter.

Here, since the suction air collides with the bottom plate of the bottomed tubular body immediately after passing through the suction section and is sucked by the air passage holes formed in the peripheral surface of the bottomed tubular body, the suction path is short, Since it is simple, a strong suction force can be obtained.

In addition, a strong suction force can be obtained by providing a bottomed cylindrical body having a bottom plate facing the suction section.
Since it has a strong suction force, there is a problem that dust mixed with water easily sticks to the bottom plate, but in the present invention, this sticking is prevented by making the bottom plate surface uneven. .

Therefore, dust mixed with water does not stick to the bottom plate of the filter housing, is separated from the suction air and falls into the dust collection case, so the moisture of this dust may enter the main body through the filter. In addition, since dust is not accumulated on the bottom plate, dust and suction air can be reliably separated for a long period of time, and therefore dust containing water can be easily cleaned, and 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 according to the present invention. FIG. 1 is a sectional view, FIG. FIG. 4 is a sectional view, FIG. 4 is a view of the filter housing, (a) is a perspective view, and (b) is a side view. (2) ... Vacuum cleaner main body, (17) ... Suction tube, (15) ... Dust collection case, (24) ... Filter housing, (31) ... Rib.

Claims (1)

[Claims] 1. A main body having a fan motor and a power feeding mechanism built-in, an intake port on a front surface, a suction case at a tip, which is detachably mounted on the front surface of the main body, and the intake air. It comprises a filter detachably mounted in the dust collection case so as to cover the mouth and a storage body for the filter, and this filter storage body is provided with a bottomed cylindrical body having a bottom plate facing the suction part. Then, in this bottomed cylindrical body, an air passage hole is formed in a peripheral surface separated from the front surface of the filter housing, and the surface of the bottom plate is formed into an uneven shape.