JP2001104223A - Centrifugal dust collector and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a centrifugal dust collector and vacuum cleaner with a large dust collecting capacity and a simple structure capable of centrifugal dust collection. SOLUTION: This vacuum cleaner has a bottomed dust box 16 with an intake 17 and an electric blower 11 sucking air from the intake 17 into the dust box 16 and generating a cyclone action. The intake 17 is formed on the side wall of the dust box 16 in the tangent direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal precipitator for collecting dust by centrifugal force generated by a cyclone effect of a vortex rotating along an inner peripheral surface in a dust box, and a vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, this type of centrifugal dust collector has been configured as shown in FIGS. Hereinafter, the configuration will be described.

[0003] As shown in the figure, a dust container 1 is formed in a cylindrical shape, an intake port 2 is provided on a side wall, and a guide plate 3 is provided inside the intake port 2. The lid 4 is attached to the upper end opening of the dust container 1 so as to be openable and closable and airtight.
A suction and exhaust device 5 is attached to the inner surface of the.

The air intake / exhaust device 5 is composed of a fan (not shown) and a motor (not shown) for driving the fan. Are exhausted through an exhaust hole 4a provided on the side surface of the cover 4 and an exhaust hole 4b provided on the upper surface of the lid 4.

[0005] The filter support 6 is mounted on the inner surface of the lid 4 so as to surround the air intake / exhaust device 5, and a large number of ventilation holes 6a are formed in the wall thereof. A substantially conical paper filter 7 is attached to the outer surface of the filter support 6 so as to cover it. The holder piece 8 holds the tip of the paper filter 7.

In the above configuration, the intake port 2 of the dust container 1
Is connected to a suction hose (not shown), and the air suction / exhaust device 5 is operated, the air introduced from the air inlet 2 is changed in direction by the guide plate 3, and as shown by the arrow, the dust collection container 1 Vortex along the inner circumference of the paper filter 7 and rotates around the paper filter 7, dust in the air is collected along the inner wall surface of the dust container 1 by centrifugal force due to the cyclone action, and large dust is collected in the dust container. 1 and only very fine dust adheres to the paper filter 7.

[0007]

In such a conventional configuration, the air introduced from the intake port 2 is provided inside the intake port 2 in order to form a vortex along the inner periphery of the dust collection container 1. The direction must be changed by the guide plate 3, and the number of parts is large and the structure is complicated.

A filter support 6 is provided on the inner surface of the lid 4.
Is attached, and a substantially conical paper filter 7 is attached to the outer surface of the filter support 6 so as to cover the filter support 6. Between the dust collecting container 1 and the paper filter 7, but the gap between the dust collecting container 1 and the paper filter 7 is narrow, and the dust entering with the air from the intake port 2 is caught between the dust collecting container 1 and the paper filter 7. There is
In this case, there is a problem that it becomes an obstacle to the centrifugal dust collection.

The internal volume of the dust container 1 is very small because the paper filter 7 is arranged in a conical shape, and the amount of dust collected at the bottom of the dust container 1 by centrifugal dust collection is reduced. In addition, the frequency with which dust is discarded from the dust collection container 1 increases, and there is also a problem that usability is poor.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems. The number of parts is small, the centrifugal dust can be collected with a simple structure, and the amount of dust collected by the centrifugal dust is increased to improve the usability. It is intended to be.

[0011]

In order to achieve the above object, a centrifugal precipitator according to the present invention is provided with an intake port for sucking air into a bottomed dust box, and a suction / exhaust device is provided inside the dust box from the intake port. And a cyclone action is generated, and an intake port is provided tangentially on a side wall of the dust box.

As a result, centrifugal dust collection can be performed with a small number of parts and a simple structure, the amount of dust collected in the dust box by the centrifugal dust collection can be increased, and usability can be improved.

Further, the vacuum cleaner according to the present invention is such that the above-mentioned centrifugal dust collector is provided in a vacuum cleaner main body, and a suction body having a suction port opened on a lower surface is connected to an intake port of the centrifugal dust collector. It is.

Thus, the suction force of the suction and exhaust device allows
The air containing dust sucked into the dust box from the suction port on the lower surface of the suction body can be collected by centrifugal force in the dust box to obtain high dust collection performance, and also increases the amount of dust accumulated in the dust box. And an easy-to-use vacuum cleaner can be realized.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An invention according to a first aspect of the present invention is directed to a dust box having a bottom having an intake port for sucking air therein, and a suction / exhaust device for generating a cyclone action by sucking air from the intake port into the dust box. Wherein the air intake port is provided tangentially to the side wall of the dust box, and the air containing dust sucked into the dust box by the suction force of the air intake / exhaust device enters the tangential direction from the air intake port, and It rotates as a vortex along the side wall and can be collected by centrifugal force due to its cyclone action. In addition, the number of parts is small, and centrifugal force dust can be collected in a dust box with a simple structure, and there is nothing protruding inside the dust box, so the amount of dust collected in the dust box by centrifugal dust collection should be increased. And the usability can be improved.

According to a second aspect of the present invention, there is provided the centrifugal dust collector according to the first aspect of the present invention, further comprising a filter for removing dust flowing from the dust box into the intake and exhaust device. When the dust-containing air sucked into the dust box by the suction force rotates as a swirl along the side wall of the dust box and collects the dust due to the centrifugal force of the cyclone action, the large dust in the air collects at the bottom of the dust box. Since small dust adheres to the filter, the ventilation pressure loss of the filter can be reduced over a long period of time, and high dust collection performance can be obtained.

According to a third aspect of the present invention, there is provided a dust box having a bottom having an intake port for sucking air therein, a filter provided so as to cover an upper end opening of the dust box,
A suction / exhaust device attached to an upper portion of the filter and sucking air into the dust box from the suction port and discharging the dust through the filter, wherein the suction port is a centrifugal dust collector provided tangentially on a side wall of the dust box, The air containing dust sucked into the dust box by the suction force of the air intake / exhaust device enters the tangential direction from the suction port, rotates as a vortex along the side wall of the dust box, and rotates in the air due to the centrifugal force due to the cyclone action. Large dust accumulates at the bottom of the dust box, and small dust adheres to the filter provided to cover the top opening of the dust box, which can reduce the ventilation pressure loss of the filter for a long time and achieve high dust collection performance Can be. In addition, the number of parts is small, and centrifugal force dust can be collected in a dust box with a simple structure, and there is nothing protruding inside the dust box, so the amount of dust collected in the dust box by centrifugal dust collection should be increased. And the usability can be improved.

According to a fourth aspect of the present invention, there is provided the centrifugal dust collector according to the second or third aspect, wherein the lower portion of the filter is located above the intake port. When the dust-containing air introduced into the dust box from the intake port rotates as a vortex along the inner circumference of the dust box due to the suction force, the dust-containing air does not directly hit the filter, and the Dust can be collected smoothly by centrifugal force, and dust collection performance can be improved.

According to a fifth aspect of the present invention, there is provided a centrifugal precipitator according to the second or third aspect, wherein a lower portion of the filter overlaps a part of the intake port. When the air containing dust introduced into the dust box from the intake port rotates as a vortex along the inner circumference of the dust box due to the suction force of the exhaust device, the air containing dust is present on the side and bottom surfaces of the filter near the intake port. , The filter can be self-cleaned over a wide range, and the dust collection performance can be improved.

[0020] The invention according to claim 6 provides the above-mentioned claims 1 to
5. The centrifugal dust collector according to claim 5, wherein an inclined portion is provided at a lower portion of the dust box so that an area of a bottom portion is smaller than an area of an upper end opening portion. When the dust-containing air introduced into the dust box rotates as a vortex along the inner circumference of the dust box, it rotates down to the lower part of the dust box, and as it descends, the rotation speed increases and the centrifugal force generated by the cyclone action Dust performance can be improved.

The invention described in claim 7 is the above-mentioned claim 1
6. The centrifugal dust collector according to claim 6, wherein a flat portion is provided on the lower outer bottom surface of the dust box, the device including a suction / exhaust device built-in and a dust box detachably attached thereto, for example, attaching the dust box to a cleaner body. At this time, by attaching the flat portion provided on the lower outer bottom surface of the dust box as a reference surface, the suction port can be pressed against the suction passage provided in the cleaner main body and connected while maintaining airtightness, and the dust box can be connected. A filter provided at the upper end opening can be connected to the suction / exhaust device, and centrifugal dust can be collected by the suction force of the suction / exhaust device, and high dust collection performance can be obtained.

The invention described in claim 8 is the above-mentioned claim 1-
7. The dust box according to claim 7, wherein the dust box is a centrifugal force precipitator in which the outer periphery of the filter is formed at the upper end opening, and the outer periphery of the filter is formed at the upper end opening of the dust box. By fitting to the filter, the filter can be attached to the upper end opening of the dust box without a gap, and when dust is collected by centrifugal force, it is possible to prevent small dust from leaking out of the dust box from the upper end opening. it can.

According to the ninth aspect of the present invention, there is provided the first aspect of the present invention.
8. The invention according to 8, wherein the dust box is a centrifugal dust collector provided with a carrying handle on the outer surface of the dust box, and has a built-in suction / exhaust device and a detachably attached dust box, for example, a dust box attached to a cleaner body. When attaching and detaching, it can be attached and detached by holding the handle, and the usability can be improved.

According to a tenth aspect of the present invention, there is provided an electric blower for generating a suction force, a suction body having a suction opening formed on a lower surface thereof,
A vacuum cleaner comprising the centrifugal precipitator according to any one of claims 1 to 9, wherein the suction port communicates with an intake port of the centrifugal precipitator. Therefore, air containing dust sucked into the dust box from the suction port on the lower surface of the suction body is collected by the centrifugal force due to the cyclone action in the dust box, and high dust collection performance can be obtained. It is possible to increase the amount of dust that accumulates in the vacuum cleaner, and to realize a convenient vacuum cleaner.

The invention according to claim 11 is provided with an exhaust passage for guiding at least a part of the exhaust gas from the intake / exhaust device of the centrifugal precipitator to the intake body. By guiding the exhaust gas through the exhaust passage, the dust on the surface to be cleaned can be raised by the exhaust gas of the centrifugal dust collector, and the dust collecting performance can be further improved.

According to the twelfth aspect of the present invention, the cyclone action in the dust box can be improved by setting the diameter of the intake port to 1/4 to 1 / 5.5 of the diameter of the dust box, and the centrifugal force can be improved. And a high dust collection performance can be obtained, and the amount of dust accumulated in the dust box can be increased, so that an easy-to-use vacuum cleaner can be realized.

According to a thirteenth aspect of the present invention, since the lower portion of the filter is located below the intake port, the air containing dust introduced into the dust box from the intake port by the suction force of the intake / exhaust device is used for the dust box. When rotating as a vortex along the inner circumference, air containing dust directly hits the side and bottom surfaces including the upper part of the filter near the intake port and the entire surface of the filter, so that the entire surface of the filter can be self-cleaned, Dust collection performance can be improved.

According to the fourteenth aspect of the present invention, since the lower portion of the substantially conical filter is located below the intake port, dust introduced from the intake port into the dust box by the suction force of the intake / exhaust device is included. When the air rotates as a vortex along the inner circumference of the dust box, the dust-containing air directly hits the side and bottom surfaces including the upper part of the filter near the intake port and the entire surface of the filter, so that the entire surface of the filter is self-cleaned. It is possible,
Furthermore, as the filter has a substantially conical shape and rotates as a vortex along the inner circumference of the dust box, as it descends while rotating to the bottom of the dust box,
The rotation speed increases, and the centrifugal force dust collection performance by the cyclone action can be improved.

According to a fifteenth aspect of the present invention, when the dust box is attached to and detached from the cleaner body by providing the suction port in a direction substantially opposed to the handle of the dust box, the dust box is attached and detached. Since the suction port is provided, the connection port between the suction port and the cleaner main body can be easily and reliably attached and detached since the attachment / detachment operation directions are substantially the same, and usability can be improved. .

[0030] According to a sixteenth aspect of the present invention, the dust box is formed of a transparent or translucent material.
The state of dust accumulation in the dust box can be checked from the outside, and the dust collected by centrifugal force due to the cyclone action can be visually observed while rotating in the dust box, so that a good barometer in a good dust collection state can be obtained. Also.

According to a seventeenth aspect of the present invention, the centrifugal precipitator according to any one of the first to ninth aspects is located below the electric blower that generates a suction force, and a suction port is provided on a lower surface. The suction port on the lower surface of the suction body is drawn by the suction force of the suction and exhaust device by connecting the suction port of the opened suction body to the suction port provided on the back side of the dust collector so that air flows toward the front side. The air containing dust sucked into the dust box is collected by the centrifugal force due to the cyclone action in the dust box, so that high dust collecting performance can be obtained, and the amount of dust accumulated in the dust box is increased. Is completed,
An easy-to-use vacuum cleaner can be realized.

According to the eighteenth aspect of the present invention, by making the diameter of the intake port smaller than the inner diameter of the communicating portion, the cyclone action in the dust box can be improved, the centrifugal force can be improved, and high dust collection can be achieved. Performance can be obtained, and the amount of dust accumulated in the dust box can be increased, so that an easy-to-use vacuum cleaner can be realized.

[0033]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 shows a first embodiment of the present invention.
This will be described with reference to FIGS.

The cleaner body 10 has a built-in electric blower (suction / exhaust device) 11 for generating a suction force, a suction body 12 having a suction opening 12a formed on the lower surface at the lower front, and a roller 13 at the lower rear. Is provided, and the surface to be cleaned can be moved by operating the handle portion 14 provided on the upper portion of the cleaner body 10.

The suction body 12 is provided with a rotary brush 15 for scraping dust on the surface to be cleaned, and is configured so that the suction force of the electric blower 11 acts to suck the dust on the surface to be cleaned.

As shown in FIG. 2, the dust box 16 is made of a transparent (may be translucent) material and formed with a bottom, and an intake port 17 for taking in air is provided in a side wall of the dust box 16 in a tangential direction. I have. A cover 19 is attached so as to cover the upper end opening 18 of the dust box 16, and an exhaust port 20 is provided in the cover 19. Further, a filter 21 is attached so as to cover the upper end opening 18 of the dust box 16. The inside diameter of the intake port 17 is 1/4 to 1/1 / the inside diameter of the upper end opening 18 of the dust box 16.
5.5.

With the lid 19 and the filter 21 attached to the dust box 16, the dust box 16 is removably attached to the cleaner body 10, and the suction force of the electric blower (suction / exhaust device) 11 allows the dust box to pass through the intake passage 22 from the suction body 12. A centrifugal precipitator is constructed such that air is sucked into the chamber 16 to generate a cyclone action, and is discharged from the exhaust port 20 through the filter 21. Here, as shown in FIG. 3, the lower part of the filter 21 is located above the intake port 17.

The dust box 16 is provided with an inclined portion 23 in the lower portion so that the area of the bottom portion is smaller than the area of the upper end opening portion, and a flat portion 24 on the outer bottom surface of the lower portion. further,
A filter 21 is provided at the upper end opening 18 of the dust box 16.
The section 25 is formed as a paragraph in which the outer periphery of the section is fitted.

Further, a carrying handle 26 is provided on the outer surface of the dust box 16 so that the dust box 16 can be detachably attached to the cleaner main body 10 by using the handle 26. 12
The air inlet 17 is pressed into contact with the air intake passage 22 communicating with the air intake passage 22 so as to be airtightly connected.

The intake port 17 is provided in a direction substantially opposite to the handle 26.

The electric blower 11 comprises a fan section 27 and a motor 28 for driving the fan section 27. The motor 28 is constituted by a DC motor and uses a low input type motor having a motor input of 40 W and a fan output of 20 W. are doing. Battery 29
Drives a motor 28, and uses a nickel-cadmium battery 10 cells (1.2V / cell).
12V is applied, and a current of 3.3 A flows. This battery 29 enables continuous operation for 25 minutes.

Here, by making the motor 28 constituting the electric blower 11 a low input type motor, the motor 28 itself can be reduced in size and the motor 28 can be replaced by a battery 29.
When driven by, the battery 29 can be made small and lightweight,
The weight of the vacuum cleaner body can be reduced.

Further, by driving the motor 28 with the battery 29, the mouthpiece 12 can be freely moved with respect to the surface to be cleaned as a cordless member for cleaning, so that the usability can be improved, and a little. Cleaning can be performed easily and easily, and since the motor 28 is of low power consumption and low input type, the battery 29 can be easily cleaned.
, It can be cleaned for a long time.

The operation of the above configuration will be described. With the lid 19 and the filter 21 attached to the dust box 16, the dust box 16 is detachably attached to the cleaner main body 10, and when the operation is started, the intake passage 12, the intake port 17 of the dust box 16, the filter 21, and the lid Body 1
9, the suction force of the electric blower 11 acts on the path passing through the exhaust port 20, and the suction force of the electric blower 11 removes the dust on the surface to be cleaned, which is scraped up by the rotating brush 15, to the suction body 1.
Inhale from 2. The sucked dust is tangentially introduced into the dust box 16 from the air inlet 17 through the air intake passage 22 communicating with the air inlet body 12 together with the air.

The air containing dust introduced tangentially from the air inlet 17 is supplied to the dust box 1 by the cyclone action.
6, descending while rotating as a vortex along the inner peripheral surface,
When descending to the vicinity of the lower end, the flow reverses and starts to rise this time, and rises to the exhaust port 20 while rotating the center of the dust box 16.

At this time, the dust in the air descends along the inner wall surface of the dust box 16 due to the centrifugal force due to the cyclone action, large dust is accumulated on the bottom of the dust box 16, and fine dust is substantially Is turned upside down and adheres to the filter 21.

That is, by collecting dust by centrifugal force due to the cyclone action, dust which tends to flow into the suction side of the electric blower 11 can be reduced, and therefore, dust adhering by the filter 21 for removing the dust can be reduced. The amount is very small. In particular, as the distance from the bottom of the dust box 16 increases, the influence of the soaring of the dust decreases, and at a position close to the exhaust port 20, the adhesion of the dust due to the soaring can be reduced. The inside diameter of the intake port 17 is the upper end opening 18 of the dust box 16.
1/4 to 1 / 5.5 of the inner diameter. Thereby, the cyclone action in the dust box 16 can be improved, the centrifugal force can be improved, high dust collection performance can be obtained, and the amount of dust accumulated in the dust box 16 can be increased. It is possible to realize an easy-to-use vacuum cleaner.

As described above, by providing the filter 21 at a position away from the bottom surface of the dust box 16, it is possible to prevent clogging without cleaning the filter 21 each time dust accumulated in the dust box 16 is discarded.
High dust collection performance can be obtained, and usability can be improved.

The inner volume of the dust box 16 is large enough to accumulate large dust.
When the dust box 16 is full and the dust box 16 is removed and the dust is discarded, the upper opening 1 of the dust box 16 is removed.
Since the filter 8 is covered with the filter 21, dust is not scattered to the outside, which is sanitary. Further, since the dust box 16 is formed of a transparent (may be translucent) material, the condition of dust accumulation in the dust box 16 can be checked from the outside, and the dust collected by centrifugal force due to the cyclone action can be used. It is also possible to visually observe the state of rotation inside the barometer and to obtain a good dust collection state barometer.

Further, according to the present embodiment, since the guide plate conventionally attached to the inner wall of the dust box is not required, the number of parts is small, and the centrifugal dust can be collected in the dust box 16 having a simple structure. Since there is nothing protruding inside the dust box 16, the amount of dust accumulated in the dust box 16 due to centrifugal dust collection can be increased, and usability can be improved.

The lower part of the filter 21 is
Since the air blower 11 is configured so as to be located above, the air containing dust introduced into the dust box 16 from the intake port 17 by the suction force of the electric blower 11 is used to generate dust.
When rotating as a vortex along the inner periphery of 6, the dust-containing air does not directly hit the filter 21, and the dust can be collected smoothly by centrifugal force due to the cyclone action, thereby improving the dust collection performance. be able to.

Further, since the inclined portion 23 is provided below the dust box 16 so that the area of the bottom is smaller than the area of the upper end opening 18, the suction force of the electric blower 11 causes the suction box 17 to move the dust box 16 into the dust box 16. When the air containing dust introduced into the dust box rotates as a vortex along the inner periphery of the dust box 16, the rotation speed increases as it descends while rotating to the lower part of the dust box 16, and the centrifugal force due to the cyclone action increases. Dust performance can be improved.

Further, since the flat portion 24 is provided on the lower outer bottom surface of the dust box 16, when the dust box 16 is mounted on the cleaner body 10, the flat portion 24 provided on the lower outer bottom surface of the dust box 16 is used as a reference surface. Thereby, the air inlet 17 can be pressed against the air intake passage 22 provided in the cleaner body 10 to maintain the airtight connection, and the filter 21 provided at the upper end opening 18 of the dust box 16 can be connected to the electric blower 11. The centrifugal dust can be collected by the suction force of the electric blower 11, and high dust collecting performance can be obtained.

The upper end opening 1 of the dust box 16
8, the outer periphery of the filter 21 is formed as a paragraph where the outer periphery of the filter 21 is fitted, and the outer periphery of the filter 21 is fitted into the paragraph 25 of the dust box 16 so as to fit the filter 21 to the upper end opening 18 of the dust box 16. Can be attached without interposing a gap, and when dust is collected by centrifugal force, small dust can be prevented from leaking out of the dust box 16 from the upper end opening 18.

Also, since the carrying handle 26 is provided on the outer surface of the dust box 16, when the dust box 16 is attached to and detached from the cleaner main body 10, the dust box 16 can be attached and detached with the handle 26, thereby improving usability. Can be.

Further, the handle 26 of the dust box 16
Of the dust box 16 when attaching and detaching the dust box 16 to and from the cleaner main body 10.
To be attached and detached.
7, the attachment / detachment of the connection port between the suction port 17 and the cleaner body 10 side is substantially the same as the attachment / detachment operation direction. The air inlet 17 can be press-contacted and airtightly connected,
And it can be performed reliably, and usability can be improved.

In the present embodiment, the lower portion of the filter 21 is located above the intake port 17;
As shown in FIG. 4, the lower part of the filter 21a is the intake port 1
In this case, the air containing dust introduced into the dust box 16 from the intake port 17 provided in the dust box 16 by the suction force of the electric blower 11 may be used to overlap the dust box 16. When rotating as a vortex along the inner circumference of the filter, dust directly hits the side surface and the bottom surface of the filter 21a near the intake port 17, whereby the filter 21a can be self-cleaned over a wide range, and the dust collection performance is improved. Can be improved.

Further, as shown in FIG. 8, the lower portion of the filter 21a may be located below the intake port 17. In this case, the filter 21a is provided on the dust box 16 by the suction force of the electric blower 11. When the air containing dust introduced into the dust box 16 from the intake port 17 is rotated as a vortex along the inner periphery of the dust box 16, the side and bottom surfaces including the upper portion of the filter 21 a near the intake port 17 and the filter When the dust-containing air directly hits the entire surface of the filter 21a, the filter 21a can be self-cleaned over its entire surface, and the dust collecting performance can be improved.

Further, since the filter 21a has a substantially conical shape and rotates as a vortex along the inner periphery of the dust box 16, the rotation speed increases as the filter 21a descends while rotating below the dust box 16. In addition, centrifugal dust collection performance by the cyclone action can be improved. Further, as shown in FIG.
By making the diameter smaller than the inner diameter of the communicating portion 17a in b, the cyclone action in the dust box 16 can be improved, the centrifugal force can be improved, and high dust collection performance can be obtained, and the dust collects in the dust box 16. It is possible to increase the amount of dust and to realize an easy-to-use vacuum cleaner. Since only the diameter of the intake port 17 is made smaller than the inner diameter of the communication part 17a by the wall 17b, there is no pressure loss in the communication part 17a and the suction passage up to that, and it is possible to prevent the suction force from being reduced. I have.

(Embodiment 2) A second embodiment of the present invention is shown in FIG.
This will be described with reference to FIGS. The same parts as those in the above embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

The cleaner body 10a has a built-in electric blower 11 for generating a suction force.
In addition to providing the suction body 12 having an opening a, the dust box 16 is detachably attachable, and when attached to the cleaner body 10a, the suction port 17 is pressed against the suction passage 22 communicating with the suction body 12 so as to be airtight. It is configured so that it can be connected. The exhaust passage 30 guides a part of the exhaust air of the electric blower 11 to the suction body 12 through the exhaust hole 31. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. When the dust box 16 is attached to the cleaner body 10a and the operation is started, the suction body 12 passes through the intake passage 22, the intake port 17 of the dust box 16, the filter 21, and the exhaust port 20 of the dust box 16 as in the first embodiment. The suction force of the electric blower 11 acts on the path, and the suction force of the electric blower 11 sucks the dust on the surface to be cleaned, which is swept up by the rotating brush 15, from the suction body 12. The sucked dust is tangentially introduced into the dust box 16 from the air inlet 17 through the air intake passage 22 communicating with the air inlet body 12 together with the air.

The air containing dust introduced tangentially from the air inlet 17 descends while rotating as a vortex along the inner peripheral surface of the dust box 16, and when it descends near the lower end, the flow starts to reverse and rise. , And rises to the exhaust port 20 while rotating the center of the dust box 16.

At this time, the dust in the air descends along the inner wall surface of the dust box 16 due to the centrifugal force due to the cyclone action, and large dust is accumulated at the bottom of the dust box 16. Is turned upside down and adheres to the filter 21.

At this time, by guiding a part of the exhaust air of the electric blower 11 to the suction body 12 through the exhaust passage 30, dust on the surface to be cleaned can be made to fly by the exhaust air of the electric blower 11, thereby further improving the dust collecting performance. Can be improved.

[0067]

As described above, according to the centrifugal dust collector of the present invention, the number of parts is small, centrifugal dust can be collected with a simple structure, and the amount of dust collected in the dust box by the centrifugal dust is reduced. This can be increased and usability can be improved.

Further, according to the vacuum cleaner of the present invention, the air containing dust sucked into the dust box from the suction port on the lower surface of the suction body by the suction force of the suction / exhaust device is centrifugally collected in the dust box. In addition, the amount of dust accumulated in the dust box can be increased, and an easy-to-use vacuum cleaner can be realized.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a vacuum cleaner equipped with a centrifugal dust collector according to a first embodiment of the present invention.

FIG. 2A is a top view showing a state where a filter and a lid are attached to a dust box of the centrifugal dust collector. FIG. 2B is a cross-sectional view showing a state where a filter and a lid are attached to the dust box of the centrifugal dust collector.

FIG. 3 is a partially cutaway front view showing a state in which a filter and a lid are attached to a dust box of the centrifugal dust collector.

FIG. 4 is a partially cutaway front view showing a state in which a filter and a lid are attached to a dust box of a centrifugal dust collector showing another example.

FIG. 5 is a longitudinal sectional view of a vacuum cleaner having a centrifugal dust collector showing a second embodiment of the present invention.

FIG. 6 is a front view of the vacuum cleaner.

FIG. 7 is a cross-sectional view of the vacuum cleaner.

FIG. 8 is a partially cutaway front view showing a state in which a filter and a lid are attached to a dust box of a centrifugal dust collector showing another example of the first embodiment of the present invention.

FIG. 9 is a sectional view taken along line AA of FIG. 8;

FIG. 10 is a partially cutaway front view of a conventional centrifugal dust collector.

FIG. 11 is a partially cutaway top view of the centrifugal precipitator.

[Explanation of symbols]

 11 Electric blower (intake and exhaust device) 16 Dust box 17 Inlet

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Koga Kato 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Koichi Ito 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Shin Yoshida 1006 Odaka Kadoma, Kadoma City Osaka Pref.

Claims (18)

[Claims] 1. A dust box having a bottom having an intake port for taking in air therein, and an intake / exhaust device for taking in the dust box from the intake port to generate a cyclone action,
A centrifugal precipitator, wherein the intake port is provided tangentially to a side wall of the dust box. 2. The centrifugal dust collector according to claim 1, further comprising a filter for removing dust contained in the air flowing from the dust box into the air intake / exhaust device. 3. A dust box having a bottom having an air inlet for taking air therein, a filter provided so as to cover an upper end opening of the dust box, and a filter attached to an upper portion of the filter to draw air into the dust box from the air inlet. A centrifugal dust collector, comprising: a suction / exhaust device that discharges the air through a filter; 4. The centrifugal precipitator according to claim 2, wherein the lower portion of the filter is located above the intake port. 5. The centrifugal precipitator according to claim 2, wherein a lower portion of the filter overlaps a part of the intake port. 6. The centrifugal dust collector according to claim 1, wherein an inclined portion is provided at a lower portion of the dust box so that an area of a bottom portion is smaller than an area of an upper end opening portion. 7. A centrifugal dust collector according to claim 1, wherein a flat portion is provided on a lower outer bottom surface of the dust box. 8. The dust box according to claim 1, wherein the dust box is formed at the upper end opening with a section as a paragraph for fitting the outer periphery of the filter.
The centrifugal precipitator according to any one of claims 7 to 13. 9. The centrifugal dust collector according to claim 1, wherein a carrying handle is provided on an outer surface of the dust box. 10. A centrifugal dust collector according to claim 1, further comprising an electric blower for generating a suction force, a suction body having a suction port opened on a lower surface, and the centrifugal dust collector according to claim 1. Vacuum cleaner connected to the inlet of the centrifugal dust collector. 11. The vacuum cleaner according to claim 10, further comprising an exhaust passage for guiding at least a part of the exhaust from the intake and exhaust device of the centrifugal dust collector to the suction body. 12. The centrifugal precipitator according to claim 1, wherein the diameter of the suction port is set to 1/4 to 1 / 5.5 of the diameter of the dust box. 13. The centrifugal precipitator according to claim 2, wherein a lower portion of the filter is located below the intake port. 14. The centrifugal precipitator according to claim 2, wherein a lower portion of the substantially conical filter is located below the intake port. 15. The centrifugal dust collector according to claim 1, wherein an intake port is provided in a direction substantially opposite to a handle of the dust box. 16. The dust collector according to claim 1, wherein the dust box is formed of a transparent or translucent material. 17. Suction of a suction body in which the centrifugal dust collector according to any one of claims 1 to 9 is located below an electric blower that generates suction force, and a suction port is opened on a lower surface. An electric vacuum cleaner whose mouth communicates with the air inlet provided at the back of the dust collector to allow air to flow toward the front. 18. The vacuum cleaner according to claim 1, wherein the diameter of the air inlet is smaller than the inner diameter of the communication portion.