JP3147913B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner provided with a centrifugal dust collector above a suction device.

[0002]

2. Description of the Related Art Conventionally, there is a vacuum cleaner adapted to wet dust as shown in FIG . In this vacuum cleaner, dust sucked by a floor nozzle 1 as a suction tool is accumulated in a dust collecting chamber of a cleaner body 4 via an extension pipe 2 and a bellows hose 3.

As shown in FIG. 5 , in an upright type vacuum cleaner in which a cleaner body 12 is rotatably mounted on a part of a floor nozzle 11, a collection of the floor nozzle 11 and the cleaner body 12 is provided. The dust chamber is connected by a bellows hose 13 or the like, and dust is accumulated in the dust collecting chamber of the cleaner body 12.

However, in this type of vacuum cleaner, when sucking wet refuse or mud, the refuse adheres to the extension pipe 2 or the inner walls of the bellows hoses 3, 13 and after the operation is stopped, the mud drips on the floor. Or water leaks from the seam along the way.

[0005] As a vacuum cleaner to cope with this, Figs.
As shown in FIG. 8 , in addition to the filter-type dust collector 22 provided on the cleaner body 21, a cylindrical centrifugal-type dust collector 23 is detachably provided above a floor nozzle 24 as a suction tool. There is something. Suction port 24 of floor nozzle 24
a, a rotating brush 25 for scraping up dust is rotatably provided by a driving means (not shown).
The suction port 24 a of the centrifugal force type dust collecting device 23 is communicated with a peripheral portion of a cylindrical dust collecting portion 26 through a dust collecting tube 27. At the center of the cylindrical dust collecting portion 26 of the centrifugal dust collecting device 23, a suction pipe 28 to the cleaner main body 21 side is protruded and opened substantially upward. The suction pipe 28 is a suction connection pipe 29
Is connected to the mounting portion of the filter 30 in the cleaner main body 21 via the. In addition, 31 is an electric blower built in the cleaner body 21.

In this configuration, the electric blower 31 is operated to generate a suction force and rotate the rotating brush 25. Then, dust and muddy water are collected by the dust collecting tube 27 by the suction force of the electric blower 31 and the scraping force of the rotating brush 25.
The dust and muddy water are conveyed into the centrifugal dust collecting device 23 through the inside, and rotate along the inner wall of the cylindrical dust collecting portion 26 in the centrifugal dust collecting device 23. At this time, relatively heavy dirt, muddy water and the like fall by the gravity of the cylindrical dust collecting portion 26 and fall to the bottom of the cylindrical dust collecting portion 26 by the action of the centrifugal force, and are accumulated. On the other hand, light dust has a stronger suction force to the suction pipe 28 than the centrifugal force, and is sucked into the suction pipe 28 to be collected by the filter 30 of the cleaner body 21.

As described above, muddy water and relatively heavy refuse are stored in the centrifugal dust collector 23, and light refuse such as fine powder is stored in the filter dust collector 22. Without this, the initial performance can be maintained for a long time. In addition, a cylindrical dust collecting section 26 is provided immediately above the floor nozzle 24.
Is provided, adhesion of dirt and the like to the passage is reduced, and sewage or the like does not drop on the floor after the operation is completed.

[0008]

However, the centrifugal dust collecting device 2 is provided above the floor nozzle 24 as a suction device.
In the conventional vacuum cleaner provided with the suction pipe 3, the suction pipe 28 is formed so as to protrude largely upward in the cylindrical dust collecting portion 26 in order to reliably separate relatively heavy dust such as muddy water and light dust such as fine powder. As a result, the size of the cylindrical dust collecting portion 26 and, consequently, the size of the centrifugal dust collecting device 23 are increased, and there is a problem that the usability is poor.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide an easy-to-use vacuum cleaner provided with a centrifugal dust collecting device above a suction tool.

[0010]

SUMMARY OF THE INVENTION In order to solve the above problems, a vacuum cleaner according to the present invention is a vacuum cleaner having an electric blower.
Equipped with a suction tool in contact with the body and the suction surface such as the floor,
On top of the suction device, a centrifugal force type dust collector communicating is provided directly to the suction port of the suction device, the centrifugal
The force-type dust collector is almost vertically oriented in the axial direction.
It has a cylindrical shape, and the suction port of the suction tool is a centrifugal type
The centrifugal dust collector is connected to the periphery of the dust collector, and a suction pipe to the main body of the vacuum cleaner is located at the center of the centrifugal dust collector.
Imen projecting upward so as to face an opening in one in which the diameter of the opening side of the suction pipe is larger.

According to the above configuration , a large pressure difference is generated at the opening of the suction pipe, and relatively heavy dust and light dust such as fine powder are easily separated, so that the protrusion height of the suction pipe can be made lower than before. The centrifugal dust collector can be made compact. This improves usability.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. Note that, in the following examples, only a part of the centrifugal dust collector differs from the conventional vacuum cleaner in which the centrifugal dust collector is provided above the suction tool,
Components having the same functions as those in the related art are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIGS. 1 to 3, the diameter of the suction pipe 41 of the centrifugal dust collector 40 of this vacuum cleaner is formed to be large at the opening 41a side.
1 is formed lower than the conventional one, and accordingly, the height of the cylindrical dust collecting part 42 of the centrifugal force type dust collecting device 40 is also formed lower than the conventional one. .

According to the above configuration, since the diameter of the suction pipe 41 is formed larger toward the opening 41a, a large pressure difference is generated in the opening 41a of the suction pipe 41, and relatively heavy dust and light dust such as fine powder are generated. Are easily separated. Therefore, even if the height of the protrusion above the suction pipe 41 and the height of the cylindrical dust collecting portion 42 of the centrifugal dust collecting device 40 are made lower than those of the conventional one, the relatively heavy dust and fine powder Light centrifugal debris can be reliably separated, and the compactness of the centrifugal dust collector 40 enhances usability.

Here, even if the suction pipe is simply formed of a large diameter straight pipe, a pressure difference occurs between the centrifugal force and the suction force at the opening of the suction pipe. In this case, the pressure inside the suction pipe increases. And the suction power is weakened. Therefore, by making the diameter of the suction pipe 41 larger toward the opening 41a as described above, the usability can be improved while obtaining a strong suction force.

[0016]

As described above, according to the present invention, by making the diameter of the suction pipe larger toward the opening, the height of the protrusion of the suction pipe can be made lower than in the prior art, and the centrifugal force type dust collector can be manufactured. Can be made compact, improving usability.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a vacuum cleaner according to one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the electric vacuum cleaner.

FIG. 3 is a partially cutaway plan view of a centrifugal dust collector in the vacuum cleaner and the vicinity thereof.

FIG. 4 is a perspective view of a conventional vacuum cleaner.

FIG. 5 is a perspective view of a conventional vacuum cleaner.

FIG. 6 is a partially cutaway perspective view of a conventional vacuum cleaner.

FIG. 7 is a vertical cross-sectional view of a centrifugal force type dust collecting device in a conventional vacuum cleaner and its vicinity.

FIG. 8 is an enlarged vertical sectional view of a centrifugal dust collector in a conventional vacuum cleaner.

[Explanation of symbols]

 21 Vacuum cleaner body 22 Filter type dust collector 24 Floor nozzle (suction unit) 24a Suction port 40 Centrifugal force type dust collector 41 Suction pipe 41a Opening 42 Cylindrical dust collecting unit

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-52-20669 (JP, A) JP-A-48-54260 (JP, U) JP-A-59-67568 (JP, U) JP-A 52-6696 4272 (JP, U) JP-A 56-54056 (JP, U) JP-B 1-56772 (JP, B2) JP-B 44-13346 (JP, Y1) JP-B 40-9270 (JP, Y1) Japanese Utility Model Showa 44-28216 (JP, Y1) Japanese Utility Model Showa 55-7232 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 9/02-9/06 A47L 5/28 , 7 / 00,9 / 16 B04C 3/06

Claims (1)

(57) [Claims] 1. A vacuum cleaner body having an electric blower and suction
And a centrifugal dust collector that directly communicates with the suction port of the sucker is provided directly above the sucker, and the centrifugal dust collector has an axial direction substantially vertical.
It has a substantially cylindrical shape that faces in the direction
The mouth is connected to the periphery of the centrifugal dust collector, and the suction pipe to the main body of the vacuum cleaner has a centrifugal force at the center of this centrifugal dust collector.
Wherein current is projected upward so as to face the ceiling surface of the dust is opened, a vacuum cleaner diameter of the opening side of the suction pipe is larger.