JPH08317887A - Vacuum cleaner - Google Patents

Abstract

PURPOSE: To improve the water separation efficiency and increase the suction power by forming recesses and projections engaged with each other on the outer peripheries of a water separator and a spider, making the water separator hardly deformed, setting the revolving speed of the water separator sufficiently high, and setting the revolving speed of a blower connected to the water separator high. CONSTITUTION: The air containing dust is guided into a water pan 11 by the blower 1 of a fan motor 14 via a suction pipe 2 to collide with water, and dust is separated. The moisture of the air is separated by the slits 5 of a rotating water separator 4, and only air is drawn into the blower 1 and discharged to the outside. Recesses are formed on the outer periphery of a spider 7, projections are formed on the outer periphery of the water separator 4, and they are engaged with each other. Even when the water separator 4 is rotated at a high speed, no deflection is generated by the centrifugal force due to this engagement. Airthightness is kept by these recesses and projections, and a seal is formed by the outer peripheries of the water separator 4 and the spider 7 and a flange 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner using a water filter, and more particularly to a structure relating to the water separator.

[0002]

2. Description of the Related Art Conventionally, there has been known an electric vacuum cleaner using a water filter as a means for separating and capturing dust from the air containing the sucked dust. As such an electric vacuum cleaner, there is one having a structure as shown in FIGS. 4 and 5, for example. FIG. 5 is an enlarged view of the main part of FIG. The air containing dust is sucked into the main body by the blower 1 through the suction pipe 2 and collides with the water 3. At this time, the dust is separated from the air by the water 3 and captured by the water, while the air contains water. This air rises due to the negative pressure generated by the rotation of the blower 1, and tries to enter the blower 1 side through the slit 5 of the water separator 4. However, the water is centrifugally separated by the rotation of the water separator 4 fixed to the motor shaft 6, only the air passes through the slit 5 and is discharged to the outside by the blower 1.

A spider 7 is fixed to the motor shaft 6 by a nut 8, and the water separator 4 is fixed between the nut 8 and the nut 9 so that the water separator 4 is sandwiched between the nut 8 and the nut 9. . The outer peripheral flange portion of the water separator 4 is pressed against the outer peripheral flat portion of the spider 7, and the water separator 4 is structurally supported by the spider 7. The inner peripheral flange portion of the motor packing flange 10 fixed to the motor case side, and the outer peripheral flange portion of the spider 7 and the outer peripheral flange portion of the water separator 4 form concavities and convexities that are fitted to each other. A shield is formed. Reference numeral 11 in the figure is a water pan containing the water 3 and 12
Is a water level post, 13 is a main body housing, and 14 is a fan motor.

[0004]

By the way, generally, in the water separator, the number of rotations is increased, the width of slits formed in the outer peripheral wall is narrowed, and the number of slits is increased, whereby the separation efficiency can be improved. it can. In order to increase the rotation speed, it is necessary to reduce the weight of the water separator and also improve the balance during rotation. In order to reduce the weight, it is possible to form the water separator with a thin wall. However, when the rotation speed of the water separator is increased, the centrifugal force (shown by the white arrow F in FIG. 5) generated by this rotation deforms the water separator, and this deformation causes unbalanced rotation and vibration. Cause For this reason, in practice, the number of rotations could not be increased sufficiently. Also,
In order to improve the suction power of the vacuum cleaner, it is necessary to increase the rotation speed of the blower, but if the blower and the water separator are combined, the rotation speed of the blower will be sufficiently high. It was not possible to improve the suction work rate. In view of the above, it is an object of the present invention to provide an electric vacuum cleaner having a water separator that is unlikely to be deformed even if the rotation speed is sufficiently increased.

[0005]

SUMMARY OF THE INVENTION An electric vacuum cleaner according to the present invention for solving the above-mentioned problems and achieving the above-mentioned objects is provided.
A water filter that separates and captures dust from the sucked dust-containing air, a water separator that has a container shape and has a slit on its side wall, and that separates and collects water from the air passing through the slit by rotation, In an electric vacuum cleaner that structurally supports a water separator and includes a spider that rotates integrally with the water separator, the outer peripheral abutting portions of the water separator and the spider are fitted to each other. It is characterized in that unevenness is formed.

[0006]

In the vacuum cleaner constructed as described above, the water separator and the spider have the outer peripheral abutting portions formed with the concavities and convexities that are fitted to each other. It is unlikely to be deformed by force, so that the number of rotations can be sufficiently increased and the water separation effect can be improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In these figures, the same reference numerals as those in FIGS. 4 and 5 used to describe the conventional example indicate the same parts unless otherwise specified. 1 is a sectional view of an electric vacuum cleaner according to the present invention, and FIG. 2 is an enlarged view of a main part of FIG. A flexible suction hose (not shown) having a suction brush connected to the other end is connected to the suction tube 2. A water pan 11 is formed in the lower portion of the main body, and an appropriate amount of water 3 is stored by a water level post 12. A fan motor 14 is mounted on the center of the main body housing 13, and a blower 1 is pivotally supported on the upper end of the fan motor 14. On the other hand, at the lower end of the fan motor 14, a spider 7 is fixed to the motor shaft 6 by a spider mounting nut 8. This spider 7
In the outer peripheral lower surface flat portion, a concave portion is formed in a section from the center to the inside a from the radius R position.

The water separator 4 has a substantially bowl shape, a mounting hole is formed at the center of the bottom, and a large number of slit-shaped holes (hereinafter referred to as slits) 5 are formed at equal intervals in the outer peripheral wall. It is set up. Further, the outer peripheral edge portion is once bent downward and drawn to form a convex portion having a shape and dimension which can be fitted into the concave portion of the spider 7. In this water separator 4, a motor shaft 6 penetrates through a mounting hole in the center of the bottom, contacts the lower surface of the spider mounting nut 8, and is fixed by a water separator mounting nut 9. Motor packing flange 1 fixed to the lower end of the motor case
A packing 15 formed of an elastic member is closely attached to 0, and functions as a seal on the circumference of the upper opening of the water pan 11. Further, an inward flange 16 is formed on the inner diameter side, and a labyrinth seal is formed by the outer peripheral flange of the spider 7 and the outer peripheral flange portion of the water separator 4.

When the vacuum cleaner constructed as described above is in an operating state, that is, in an energized state, the blower 1 of the fan motor 14 causes air containing dust from the suction hose to pass through the suction pipe 2 and the water pan 11. Guided inside,
It collides with the surface of the water 3. At this time, the dust is separated from the air and captured by the water, and the air rises while containing the water, and tries to enter the inside of the slit 5 of the rotating water separator 4. Here, in the case of an electric vacuum cleaner having a higher separation efficiency and a higher suction work rate than before, the water separator 4 rotates at a higher speed. The side wall having a large number of slits 5 formed therein is structurally weak, and the outermost peripheral portion tends to bend outward due to centrifugal force. However, as described in the above description, a recess is formed in the outer peripheral lower end flat portion of the spider 7, a convex portion is formed in the outer peripheral edge portion of the water separator 4, and these concave portion and convex portion are fitted. It has a structure. Therefore, at high speed rotation, the outer peripheral portion of the water separator 4 rotates smoothly and quietly without any change from the static shape.
Water that tries to enter the inside is separated, and only air reaches the inside of the blower 1.

Further, a part of the air containing water, which has risen, tries to intrude also from the end of the outer peripheral flange of the water separator 4, but is airtight by the concave portion on the side of the spider 7 and the convex portion of the water separator 4. Is kept perfect, and the labyrinth seal formed by the inward flange 16 of the motor packing flange 10 prevents its intrusion, so that it intrudes from the slit 5 of the water separator 4 to separate water. Only the blown air is drawn into the blower 1 and released to the outside. In the above description, the outer peripheral edge of the water separator 4 is bent and squeezed downward from the side wall to form a convex portion, but it may be formed in an annular rib shape as shown in FIG. In this case, both the spider 7 and the water separator 4 can be made of inexpensive resin, and the accuracy can be improved by processing such as cutting.

In the above embodiment, the concave portion is formed on the spider side and the convex portion is formed on the water separator side. However, the same effect can be obtained even if they are reversed.

[0012]

As described above, according to the present invention, since the outer peripheral abutting portions of the water separator and the spider are formed with the concavities and convexities fitted to each other, the water separator is unlikely to be deformed, and therefore the water separator is separated. Since the rotation speed of the vessel can be increased sufficiently to improve the water separation efficiency, and the rotation rate of the blower connected to the water separator can also be increased, the suction power must be increased sufficiently. You can

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention.

FIG. 2 is a schematic enlarged cross-sectional view of a main part of FIG.

FIG. 3 is a schematic cross-sectional view of a main part showing another embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view showing a conventional example.

5 is a schematic enlarged cross-sectional view of a main part of FIG.

[Explanation of symbols]

 1 Blower 2 Suction Pipe 3 Water 4 Water Separator 5 Slit 6 Motor Shaft 7 Spider 8 Nut 9 Nut 10 Motor Packing Flange 11 Water Pan 12 Water Level Post 13 Body Housing 14 Fan Motor 15 Packing 16 Flange

Claims (1)

[Claims] 1. A water filter that separates and captures dust from sucked dust-containing air, and water that has a container shape and has a slit on its side wall and that separates and collects water from the air passing through the slit by rotation. In a vacuum cleaner comprising a separator and a spider that structurally supports the water separator and rotates integrally with the water separator, in an outer peripheral contact portion between the water separator and the spider. The vacuum cleaner is characterized in that concave and convex portions are formed so as to be fitted to each other.