Cleaner for both dry and wet use having a moveable ring...

Details Cleaner for both dry and wet use having a moveable ring... Cleaner for both dry and wet use having a moveable ring...

1999-10-14

2001-05-01

Smith, Duane (Department: 1724)

Gas separation: apparatus

With gas and liquid contact apparatus

Liquid bath or reservoir for contact

C096S333000, C096S351000, C096S359000, C055SDIG003, C015S353000

Reexamination Certificate

active

06224656

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a cleaner for both dry and wet use capable of sucking not only a solid but also a semisolid and liquid.
There is an electric cleaner which is constructed so that sucked dust is collected in a paper pack that is set in a main body. On the other hand, there is a type in which water and so forth is accumulated in a main body and this is used as a filter.
Out of them, the latter is called a cleaner for both dry and wet use, and has a merit that an exhausted air is clean, compared with the former. Also, basically, the former can suck only a solid. However, the latter, that is to say, the cleaner for both dry and wet use can suck not only a solid but also a semisolid and liquid.
Here, this cleaner for both dry and wet use will be simply explained by using
FIG. 10
showing its outline structure.
As understood from the figure, a conventional type of the cleaner for both dry and wet use (referred to as a conventional cleaner, hereinafter) has a tank
41
in which water is accumulated. This tank
41
is connected to a suction hose (not shown) through a lead-in tube
42
.
On the other hand, a housing
43
is disposed above the tank
41
. Also, above this housing
43
, an electric fan
44
for suction is further installed.
In addition, a fan
45
for gas-liquid separation exists in the tank
41
. Also, a movable ring
46
is attached on an upper end side of this fan
45
for gas-liquid separation. Especially, the movable ring
46
is contained in the above-described housing
43
so that a gap between the movable ring and an inner circumferential surface of the housing does not exist. And, the movable ring
46
is subject to a drive force of the electric fan
44
and rotates together with the fan
45
for gas-liquid separation.
Now, in the cleaner having such an arrangement, when the electric fan
44
is operated, an air current toward a lower side to an upper side occurs, and a pressure in the tank
41
is reduced. As a result, dust is sucked from the suction hose to the tank
41
, and is accumulated in the tank. On the other hand, an air sucked together with the dust passes through the fan
45
for gas-liquid separation, the movable ring
46
and the electric fan
44
in order, and is exhausted to outside again. In addition, at this time, water which is scattered in the tank
41
is also carried to a side of the electric fan
44
by the air current. However, since the fan
45
for gas-liquid separation rotates at a high speed, only an air can pass through this fan
45
for gas-liquid separation. Accordingly, trouble does not occur, in which water reaches the electric fan
44
and makes it go wrong.
By the way, in such a conventional cleaner for both dry and wet use, there is the following task:
In other words, in the conventional type of the cleaner for both dry and wet use, it is impossible to increase the suction force so much. Namely, limitation of an output of a motor is set. This is why, if the suction force is increased over a certain fixed value, water is sucked up through the gap between the housing
43
and the movable ring
46
. The sucked water reaches the electric fan
44
soon and makes it go wrong.
Incidentally, as mentioned above, airtightness is fully maintained between the housing
43
and the movable ring
46
. In other words, the gap therebetween is extremely small. However, when the suction force becomes to be more than or equal to a fixed value, even though the gap is so small, water is sucked up from the gap.
If the gap between the housing
43
and the movable ring
46
is completely zero, such a task does not occur. However, the movable ring
46
rotates at a high speed with respect to the housing
43
. Accordingly, naturally, it is impossible to make the gap zero.
SUMMARY OF THE INVENTION
Therefore, the objective of the present invention is to solve the above-mentioned task.
Also, a task to be solved by the present invention is to provide a cleaner for both dry and wet use, in which a liquid is not sucked up from the gap between the housing and the movable ring.
This task is solved by a cleaner for both dry and wet use comprising:
suction means;
a fan for gas-liquid separation which rotates by means of operation of the above-described suction means;
a movable ring disposed above the above-described fan for gas-liquid separation so as to rotate together with the above-described fan for gas-liquid separation;
a housing in which at least a part of an upper end side of the above-described movable ring is contained; and
a tank which is below the above-described housing, in which a liquid is stored and at least a part of a lower end side of the above-described fan for gas-liquid separation is contained, and
the above-described cleaner being constructed so that an object to be sucked is sucked into the above-described tank by making the above-described suction means operate, wherein
through holes are formed in a circumferential wall of the above-described housing, which corresponds to a region in which the above-described housing and the above-described movable ring overlap with each other,
ribs which incline with respect to a rotational center axis of the above-described movable ring are disposed on a peripheral surface of the above-described movable ring, which corresponds to a region in which the above-described housing and the above-described movable ring overlap with each other,
the above-described ribs make a gas from the above-described through holes flow into a gap between the above-described housing and the above-described movable ring by rotation of the above-described movable ring, and further, incline in a direction along which a gas current towards a side of the above-described tank occurs in a gap between the above-described housing and the above-described movable ring, and
a liquid which enters the gap between the above-described housing and the above-described movable ring is pushed back to a side of the above-described tank by means of a gas current generated in the gap between the above-described housing and the above-described movable ring by operation of the above-described ribs when the above-described suction means is operated.
Especially, the above-described task is solved by a cleaner for both dry and wet use comprising:
suction means;
a first fan for receiving a gas current generated by a suction force of the above-described suction means and rotating;
a second fan for gas-liquid separation, which is below the above-described first fan, for rotating together with the above-described first fan;
a housing in which the above-described first fan is rotatably contained;
a movable ring disposed between the above-described first fan and the above-described second fan so as to rotate together with the above-described first fan and the above-described second fan, and of which at least a part of an upper end side is contained in the above-described housing; and
a tank which is below the above-described housing, in which a liquid is stored and at least a part of a lower end side of the above-described second fan is contained,
the above-described cleaner being constructed so that an object to be sucked is sucked into the above-described tank by making the above-described suction means operate, wherein
through holes are formed in a circumferential wall of the above-described housing, which corresponds to a region in which the above-described housing and the above-described movable ring overlap with each other,
ribs which incline with respect to a rotational center axis of the above-described movable ring are disposed on a peripheral surface of the above-described movable ring, which corresponds to a region in which the above-described housing and the above-described movable ring overlap with each other,
the above-described ribs make a gas from the above-described through holes flow into a gap between the above-described housing and the above-described movable ring by rotation of the above-described movable ring, and further, incline in a direction along which a gas current towards a side of the ab

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