Vacuum cleaner

Details Vacuum cleaner Vacuum cleaner

2001-11-14

2003-09-09

Till, Terrence R. (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S327200, C015S409000

Reexamination Certificate

active

06615447

ABSTRACT:

This nonprovisional application claims priority under 35 U.S.C. §119(a) on Patent Application No. 72497/2000 filed in Korea on Dec. 1, 2000, which is herein incorporated by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a vacuum cleaner, and more particularly, to a vacuum cleaner for sucking up dust that floats in the air around the vacuum cleaner, caused by air discharged when the vacuum cleaner is used, and purifying the air.
2. Description of the Conventional Art
In general, a vacuum cleaner is an apparatus for collecting extraneous matter such as dust by a strong suction force generated by the operation of a fan motor assembly, thus performing cleaning.
FIG. 1
is a side view showing a conventional vacuum cleaner, and
FIG. 2
is a sectional view taken along the line II—II of FIG.
1
.
In the conventional vacuum cleaner shown in
FIG. 1
, a suction head
2
, an extension pipe
3
, and a suction hose
5
are sequentially connected to a case
10
so that extraneous matter such as dust can be sucked in from the outside
A pair of wheels
7
are installed on both sides of the case
10
so that a user can easily move the vacuum cleaner.
As shown in
FIG. 2
, a collection chamber
11
that includes a dust filter bag
20
, which collects extraneous matter such as dust, which is mixed with intake air, is located in the front part of the case
10
. An apparatus chamber
13
that includes a fan motor assembly
30
which creates the suction force, and a cord chamber
14
in which a power cord
41
is wound, are located behind the collection chamber
11
such that the apparatus chamber
13
and the cord chamber
14
are separated from each other.
The collection chamber
11
, the apparatus chamber
13
, and the cord chamber
14
are separated from each other by partitions
10
a
,
10
b
, and
10
c
. A suction hole
12
is formed in the partition
10
a
between the collection chamber
11
and the apparatus chamber
13
so that air passing through the dust filter bag
20
can move toward the apparatus chamber
13
.
Discharge channels
13
a
and
14
a
are respectively formed in the case
10
at the hind parts of the apparatus chamber
13
and the cord chamber
14
so that air discharged form the fan motor assembly
30
can be discharged to the outside of the case
10
.
In the conventional vacuum cleaner that has the above structure, when the fan motor assembly
30
in the apparatus chamber
13
operates, extraneous matter such as dust included in outside air is sucked into the dust filter bag
20
through the suction head
2
, the extension pipe
3
, and the suction hose
5
, by a suction force drawing air into the collection chamber
11
toward the apparatus chamber
13
.
The air entering the dust filter bag
20
moves toward the apparatus chamber
13
by the continuous suction of the fan motor assembly
30
. At this time, the extraneous matter such as dust, which is included in the air, is caught by the dust filter bag
20
to thus remain in the dust filter bag
20
. The air that passes through the dust filter bag
20
is sucked toward the apparatus chamber
13
and is discharged to the outside of the case
10
through the discharge channels
13
a
and
14
a.
However, the conventional vacuum cleaner disturbs dust around the vacuum cleaner when the air filtered while passing through the dust filter bag
20
is discharged to the outside of the case
10
through the discharge channels
13
a
and
14
a
. Therefore, the user of the vacuum cleaner is considerably inconvenienced and cleaning efficiency deteriorates.
That is, when the vacuum cleaner is operated, filtered air is strongly discharged from the hind part of the vacuum cleaner disturbing air around the vacuum cleaner and causing dust and other extraneous matter spread over the floor and to float in the air. Therefore, the user of the vacuum cleaner and people around the vacuum cleaner are considerably inconvenienced.
Also, the disturbed extraneous matter such as dust can settle down on the floor again after cleaning is finished, thus deteriorating cleaning efficiency.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a vacuum cleaner for sucking up the dust that floats in the air around the vacuum cleaner, caused by air discharged when the vacuum cleaner is used, into a case, and purifying thus air, to thus reduce the inconvenience of a user and to improve cleaning efficiency.
To achieve the above object, there is provided a vacuum cleaner, including a case having a collection chamber including a filter for removing extraneous matter mixed with air sucked in through main suction channels and an apparatus chamber including a fan motor assembly for generating suction force and discharging intake air behind the collection chamber and a peripheral air suction device connected between the external surface of the case and the main suction channels or between the external surface of the case and the inside of the collection chamber in addition to the main suction channels, the peripheral air suction device for sucking up the air around the case.
The vacuum cleaner further includes an ejector connected between the discharge area of the fan motor assembly and the inside of the peripheral air suction device, for ejecting some of the air discharged from the fan motor assembly into the peripheral air suction device.


REFERENCES:
patent: 2997728 (1961-08-01), Gaudry
patent: 3444584 (1969-05-01), Cotte
patent: 3452751 (1969-07-01), Austin, Jr.
patent: 10-155707 (1998-06-01), None

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