Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2000-08-01
2003-11-18
Snider, Theresa T. (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S346000, C015S351000, C015S352000, C015S353000, C055SDIG003, C055S459100
Reexamination Certificate
active
06647587
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a vacuum cleaner provided with a centrifugal force dust collection section which collects the dust by the centrifugal force by the cyclone action.
2. Description of the Related Art
Conventionally, this kind of centrifugal force dust collection section is structured as shown in FIG.
12
and FIG.
13
. The structure will be described below.
As shown in the drawings, a dust collecting container
1
is formed cylindrically, and a suction air port
2
is provided on the lower side wall, and a guide plate
3
is provided on the inner wall of the suction air port
2
. A cover body
4
is attached to the upper end opening of the dust collecting container
1
so that it can be opened and closed and is air tight, and a suction and exhaust air apparatus
5
is attached to the inner surface of the cover body
4
.
The suction and exhaust air apparatus
5
is structured by a fan (not shown) and a motor (not shown) to drive the fan, and exhausts the air introduced from the suction air port
2
into the dust collecting container
1
, from the exhaust air port
4
a
provided on the side surface of the cover body
4
and the exhaust air port
4
b
provided on the upper surface of the cover body
4
.
A filter supporting body
6
is attached such that it surrounds the suction and exhaust air apparatus
5
on the inner surface of the cover body
4
, and a large number of vent holes
6
a
are provided on its wall surface. An almost conical paper filter
7
is attached to the outer surface of the filter supporting body
6
such that the filter
7
surrounds the filter supporting body
6
. A holder piece
8
holds the tip of the paper filter
7
.
In the above structure, when a suction hose (not shown) is connected to the suction air port
2
of the dust collection container
1
, and the suction and exhaust air apparatus
5
is operated, the direction of the air introduced from the suction air port
2
is changed, and as shown by an arrow, it becomes the eddy current along the inner periphery of the dust collection container
1
, and rotates around the periphery of the paper filter
7
, and by its centrifugal force by the cyclone action, the dust in the air is collected along the inner wall surface of the dust collection container
1
, and the large dust is collected on the base portion of the dust collection container
1
, and only the greatly fine dust adheres onto the paper filter
7
.
In the above conventional structure, because the suction air port
2
is provided in the lower portion of the dust collection container
1
, the air including the dust introduced from the suction air port
2
rotates along the inner peripheral surface of the dust collection container
1
, and the dust is collected by the centrifugal force by the cyclone action, however, because the collected dust is accumulated on the lower portion of the dust collection container
1
, the air from the suction air port
2
blows up the collected dust, and the dust adheres onto the overall filter
7
, therefore, there is a problem that blinding is accelerated. Accordingly, it is structured in such a manner that the paper filter can be easily attached and replaced.
Further, it is not entirely considered that the blinding of the paper filter
7
is made minimum so that the draft resistance due to the blinding of the filter is reduced, and as the suction and exhaust air apparatus
5
, it is the mandatory requirement to use the high input type motor so that the dust collection can be conducted even in the condition that the paper filter
7
is blinded. Therefore, there is also a problem that the size of the apparatus becomes large.
SUMMARY OF THE INVENTION
The present invention has been made to solve the conventional problems, and therefore an object of the present invention is to obtain a vacuum cleaner which is small in size and light in weight, and which can be operated by the low power consumption.
In order to attain the above object, the present invention is structured in such a manner that the dust on the surface to be cleaned is sucked by the suction port body on which the suction force of the electric blower generating the suction force is acted, and the dust from the suction port body is collected in the centrifugal force dust collection section, and the electric blower is composed of the fan section and the motor to drive the fan section, and the motor is a low input type motor.
According to the invention, by driving the fan section by the low input type motor, the flowing speed in the small-sized centrifugal force dust collection section can be made optimum, and while keeping the dust collection performance by the centrifugal force dust collection, the centrifugal force dust collection section is made small and light weight, and the vacuum cleaner of the low power consumption can be obtained.
According to a first aspect of the present invention, there is provided a vacuum cleaner, comprising: an electric blower which generates the suction force; a suction port body on which the suction force of the electric blower acts and which sucks the dust on the surface to be cleaned; and the centrifugal force dust collection section which collects the dust from the suction port body, wherein the electric blower is structured by a fan section and a motor to drive the fan section, and the motor is a low input type motor, and the air including the dust on the surface to be cleaned sucked from the suction port body by the suction force of the electric blower, flows into the centrifugal force dust collection section, and centrifugal force-dust-collected by the cyclone action. Herein, by driving the fan section by the low input type motor, the flowing speed in the small-sized centrifugal force dust collection section can be made optimum, and while keeping the dust collection performance by the centrifugal force dust collection, the centrifugal force dust collection section is made small and light weight, and the vacuum cleaner of the low power consumption can be obtained. Further, when the motor is a low input type motor, the motor can be operated by the battery, and can be made cordless, thereby, the cleaning operability can be increased.
According to a second aspect of the present invention, there is provided a vacuum cleaner, comprising: an electric blower to generate the suction force; a suction port body on which the suction force of the electric blower acts, and which sucks the dust on the surface to be cleaned; the centrifugal force dust collection section to collect the dust from the suction port body; and an exhaust air path to guide the exhaust air of the electric blower to the suction port body, wherein the electric blower is structured by a fan section and a motor to drive the fan section, and the motor is a low input type motor, and the air including the dust on the surface to be cleaned sucked from the suction port body by the suction force of the electric blower, flows into the centrifugal force dust collection section, and centrifugal force-dust-collected by the cyclone action. Herein, by driving the fan section by the low input type motor, the flowing speed in the small-sized centrifugal force dust collection section can be made optimum, and while keeping the dust collection performance in the centrifugal force dust collection, the vacuum cleaner of the low power consumption can be obtained, and by guiding the exhaust air of the electric blower to the suction port body through the exhaust air path, the dust on the surface to be cleaned can be blown up by the exhaust air of the electric blower, thereby, the dust collection performance can be more increased. Further, when the motor is a low input type motor, the motor can also be operated by the battery. Further, when the motor is a low input type motor, the heat generation of the motor can be suppressed lower, and specifically, in the exhaust air circulation type vacuum cleaner in which the exhaust air of the electric blower is sent to the suction port body, and the exhaust air blown off fro
Ito Kouichi
Kajikawa Saburo
Kato Tomonori
Mori Hiroshi
Ohara Naoyuki
McDermott & Will & Emery
Snider Theresa T.
LandOfFree
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