JP2003290094A - Dust collecting container for vacuum cleaner and vacuum cleaner provided therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collector for a vacuum cleaner preventing dust once separated from an air including the dust from being stirred up on a cyclone generation part. <P>SOLUTION: This dust collecting container A for the vacuum cleaner is provided with the cylindrical cyclone generation part 43 separating the dust 45 sucked by a suction port body from the air by a centrifugal force, and a dust collecting part 33 provided in a lower part of the cyclone generation part 43 and collecting the dust 45 from the cyclone generation part 43. The cyclone generation part 43 is disposed in a vertically inclined state, so that the dust 45 in the dust collecting part 33 is prevented from stirred up on the cyclone 43. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting container for an electric vacuum cleaner in which air containing dust is separated by a cyclone to collect the dust in a dust collecting container and an electric vacuum cleaner having the same. is there.

[0002]

2. Description of the Related Art Conventionally, cyclone type vacuum cleaners have
Dust (dust) on the cleaning surface is sucked together with air by the suction port, and the air containing the sucked dust is made to flow into the cyclone type dust container in the circumferential direction, and the air containing the inflow dust is collected. By creating a swirling flow along the inner surface of the container, dust is separated from the air by its own weight and deposited on the bottom of the dust container, while the air is transmitted through a filter provided above the dust container and electrically driven. It is considered that the blower sucks the air.

[0003]

In the dust collector of the conventional vacuum cleaner described above, the dust collected in the dust container of the dust collector is likely to fly up by the subsequent air sent into the dust container, and therefore, The dust collection efficiency sometimes decreased.

It is an object of the present invention to provide a dust collecting device in an electric vacuum cleaner which prevents dust once separated from dust-containing air from soaring in a cyclone generating portion to efficiently collect dust. To do.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is, for example, a cylindrical cyclone that separates dust-containing air sucked in through a suction port into dust and air by centrifugal force. In a dust collecting container for an electric vacuum cleaner, which includes a generating unit and a dust collecting unit that collects dust from the cyclone generating unit below the cyclone generating unit, the cyclone generating unit is arranged to be inclined in a vertical direction. It is characterized by that.

According to this structure, the dust once separated in the cyclone generating portion is less likely to rise from the dust collecting portion to the cyclone generating portion, and the dust collecting efficiency of the dust collecting container for the electric vacuum cleaner can be improved.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a cleaner body 2 of an electric vacuum cleaner, 2 is a bellows-shaped and flexible dust collecting hose, 3 is a hand operation pipe 3 and 4 provided at a free end of the dust collecting hose 2. Extension pipes 5 connected to the hand operation pipe 3 are suction port bodies connected to the extension pipe 4. Note that S1 and S in FIG.
Reference numerals 2 and S3 are switches provided on the hand operation pipe 3. Further, the suction port body 5 is provided with a suction port (not shown) that opens downward.

The cleaner body 1 has a body case 6 as shown in FIG. The main body case 6 has a lower case 7 as an outer case and an upper case 8 that covers an upper portion of the lower case 7. A rear end of the upper case 8 is attached to the lower case 7 by a support shaft 9 so that the upper case 8 can be opened and closed vertically.

A blower case 10 is mounted between the upper case 8 and the lower case 7, and the blower case 1
An electric blower 11 is arranged in the position 0 in an upward direction. The electric blower 11 includes a centrifugal fan unit 12 and a motor unit 13 that rotationally drives an impeller (not shown) in the centrifugal fan unit 12. Reference numeral 13a is an exhaust port of the motor unit 13.

The centrifugal fan unit 12 has an elastic member 14 such as rubber.
Is supported by a support plate 10a in the blower case 10, and the motor portion 13 is supported by a cylindrical portion 10b at the bottom of the blower case 10 via an elastic member 15 such as rubber.
An exhaust chamber 1 serving as an exhaust air passage is provided around the motor unit 13.
3b is formed. A suction chamber 16 is formed between the centrifugal fan unit 12 and the upper part of the blower case 10.

A communication port 17 is formed in the upper part of the lower case 7 and on the front side (left side in FIG. 2) of the cleaner body 1. The communication port 17 has an elastic seal member 1 made of rubber or the like.
8 is fitted. On the front side of the upper case 8, a tubular body 20 having an opening 19 in the lower portion is fixed in a vertically inclined state via a fixing means such as a screw (not shown).

A communication pipe 22 penetrating the upper wall 21 is fixed to the upper wall 21 that closes the upper end of the cylindrical body 20. The upper wall 21 and the communication pipe 22 may be integrally formed. Further, a hose connecting pipe 23, which is open in the circumferential direction, is fixedly provided on the upper portion of the tubular body 20 between the inner circumference of the tubular body 20 and the outer circumference of the communication pipe 22.

The tubular body 20, the upper wall 21, the hose connecting pipe 23 and the like constitute a cyclone generator 24.
An inner plate portion 25 is formed integrally with the upper case 8.

Further, a suction air passage 26 communicating with the communication pipe 22 is formed between the upper case 8 and the inner plate portion 25. A communication port 26a is formed in the rear portion of the inner plate portion 25, and a rubber annular elastic seal member 27 is arranged between the rear portion of the inner plate portion 25 and the upper portion of the blower case 10.

The elastic seal member 27 has a communication port 26a.
Is adhered and fixed to the inner plate portion 25 along. A communication port 28 is formed on the upper wall of the blower case 10, and the suction air passage 26 is connected to the suction chamber 1 through the communication port 26 a and the communication port 28.
It communicates with 6.

Further, the exhaust chamber 13b communicates with the outside through an exhaust port 29 penetrating the blower case 10 and the upper case 8. When the upper case 8 is opened around the support shaft 9, the cyclone generator 24 is also rotated integrally, and when the upper case 8 is closed, the tubular body 20 is closed.
The lower part of the seal contacts the elastic seal member 18 to seal the lower part of the cyclone generating part 24.

A caster 31 rolling on the cleaning surface 30 is provided on the front side of the bottom portion 7a of the lower case 7, and the bottom portion 7a is also provided.
Rear wheels 32 are provided on the left and right sides of the rear side, respectively.

A dust collecting case 33 as a dust collecting portion is housed in the lower case 7, and a handle 34 is provided on the dust collecting case 33. The dust collection case 33 can be detached from or attached to the lower case 7 by grasping the grip 34 and taking it in and out in the direction of the arrow.

The dust collecting case 33 is arranged so as to project laterally with respect to the cyclone generating portion 24.

FIG. 3 shows a vertical side view of the cyclone generator 24 and the dust collecting case 33. As shown in FIG. 4, the shape of the dust collection case 33 in plan view is an oval shape that is long in the front-rear direction, and the front end portion 33a and the rear end portion 33b.
Has a circular shape. Further, the communication port 44 formed in the dust collection case 33 is formed in the same shape as the inner shape of the elastic seal member 18 and the inner shape of the lower portion 20a of the tubular body 20.

An arcuate partition wall 35 having substantially the same center of curvature as the front end portion of the dust collection case 33 is integrally provided at a substantially central portion of the dust collection case 33. Cyclone chamber 36 on the rear side and dust collection chamber 37 on the rear side
It is divided into and.

The cyclone generator 24 is arranged so as to be inclined toward the partition wall 35.

An inflow port 38 is formed between an end portion 35a on the right side (upper side in FIG. 4) of the partition wall 35 and one wall surface portion 33c of the dust collection case 33 opposed to this end portion 35a. An exhaust port 39 is formed between the left end portion 35b and the other wall surface portion 33d of the dust collection case 33 facing the end portion 35b. The exhaust port 39 is provided with a filter 40 made of mesh or woven cloth.

The upper cross-sectional area of the dust collection case 33 is larger than the lower cross-sectional area of the cyclone generation section 24, and the volume of the dust collection case 33 is large.
It is configured to be larger than the volume of the.

The dust and air in the cyclone chamber 36 are
It flows along the circular inner wall formed by the front end portion 33a of the dust collection case 33 and the partition wall 35, and forms a substantially circular swirl flow 41 as shown by an arrow. Further, a part of the swirling flow 41 is made to flow into the dust collecting chamber 37 through the inflow port 38,
Wall surface portion 33c, inner wall surface of the rear end portion 33b and wall surface portion 33
It returns to the inside of the cyclone chamber 36 from the exhaust port 39 via the air passage 42 formed along d.

The dust collecting container A for an electric vacuum cleaner according to the present embodiment (see FIG. 2) is provided with the cyclone generating section 24 in the cleaner body 1 and the dust collecting case 33 as a dust collecting section. . The cyclone generator 24 is configured to be attachable to and detachable from the lower case 7 in the present embodiment.
Alternatively, the upper case 8 alone may be opened and closed.

The end of the dust collecting hose 2 is connected to the hose connecting pipe 23 of the cleaner body 1 as shown in FIG. Further, as shown in FIG. 3, a lid 37a for taking out dust, which will be described later, is detachably provided on an upper portion of the dust collection case 33 on the dust collection chamber 37 side via an elastic member 37b such as rubber. .

Next, the dust collector 4 constructed as described above.
The operation of No. 3 will be described.

The switch S of the hand operation pipe 3 shown in FIG.
By operating 1, S2, S3, etc., a current is supplied to the motor unit 13 of the electric blower 11 to operate the motor unit 13. By the operation of the motor unit 13, a suction negative pressure is generated on the centrifugal fan unit 12 side of the electric blower 11. This suction negative pressure is applied to the suction chamber 16, the suction air passage 26, and the cyclone generator 24.
After acting on the dust collection case 33 via the
It acts on the suction port body 5 through the hand operation pipe 3 and the extension pipe 4.

As a result, dust and air on the cleaning surface 30 (see FIG. 2) are sucked into the suction port body 5. The air containing the sucked dust flows into the cyclone generating unit 24 from the hose connecting pipe 23 of FIG. 2 via the extension pipe 4, the hand operation pipe 3, and the dust collecting hose 2.

The dust and air flowing into the cyclone generator 24 swirl along the inner circumference of the tubular body 20 to generate a downward cyclone (swirling flow) 43 in the cyclone generator 24. At this time, in the present embodiment, the hose connection pipe 23 is arranged in the tangential direction inside the tubular body 20 and on the back side of the communication pipe 22 in FIGS. When viewed, the communication pipe 22 is swirling in the clockwise direction.

As described above, the dust-containing air becomes a cyclone state in the cyclone generating section 24, so that the dust-containing air is separated into dust and air, and the cyclone generating section 2 is separated.
While turning inside 4, it descends and flows into the dust collection case 33. The dust and air that have flowed into the dust collection case 33 form a swirling flow 41 that swirls clockwise in a plan view in the cyclone chamber 36 of the dust collection case 33 as shown in FIGS. 3 and 4.

Further, the negative pressure air in the central portion separated from the dust in the cyclone generating portion 24 and the dust collecting case 33 flows into the communication pipe 22 as shown by the broken line, and further the suction air passage 2
6, exhausted from the exhaust port 29 through the suction chamber 16 and the exhaust chamber 13b.

Here, since the cyclone generator 24 is disposed so as to be inclined with respect to the dust collection case 33 as described above, the separated dust easily falls into the dust collection case 33 and the dust collection case 33. It is difficult for the dust that has flowed into the inside of the cyclone generating portion 24 to rise.

Further, since the hose connection pipe 23 is arranged in the tangential direction inside the cylindrical body 20, the hose connection pipe 23
It is not necessary to particularly direct the suction port 23a of the above. Further, since the volume of the dust collection case 33 is larger than the volume of the cyclone generation unit 24 as described above, the swirling speed of dust and air flowing into the dust collection case 33 is swirled in the cyclone generation unit 24. Since it is smaller than the speed, dust 45 in the separated dust collection case 33
Is difficult to climb into the cyclone generating part 24.

Further, since the dust collecting case 33 projects from the cyclone generating portion 24 as described above, a step is formed between the dust collecting case 33 and the cyclone generating portion 24, so that the dust collecting case 33 It is difficult for the dust 45 of the above to go up into the cyclone generating portion 24. Further, the swirling flow 41 in the dust collection case 33 has a high swirling speed and a low swirling speed, and thus the separated dust is accumulated as a dust in the low swirling speed.

In the dust collecting case 33, the partition wall 35 described above is provided.
Is provided to divide the dust collection case 33 into a cyclone chamber 36 and a dust collection chamber 37 and to form an air passage 42,
Part of the swirling flow 41 in the cyclone chamber 36 flows in the dust collecting chamber 37 along the air passage 42, and the efficiency of collecting the separated dust 45 in the dust collecting chamber 37 at the back side. Can be increased.

The exhaust port 39 on the downstream side of the air passage 42
As described above, since the filter 40 is provided in the above, the collection efficiency of the dust 45 that has flowed into the dust collection chamber 37 can be further enhanced.

Since the cyclone generator 24 is inclined toward the partition wall 35 as described above, the swirl flow 41 in the cyclone chamber 36 is strengthened along the wall surface of the front end 33a opposite to the partition wall 35. Therefore, the flow of the dust 45 to the inflow port 38 can be increased, and the collection efficiency of the dust 45 in the dust collection chamber 37 can be improved.

Since the dust collecting case 33 that collects the dust 45 as described above is detachable from the lower case 7 as described above, the dust 45 can be easily discarded from the removed dust collecting case 33. You can

FIG. 5 shows a modification of the cylindrical body 20 of the cyclone generator 24. The cylindrical body 20 in FIG. 5 is formed in a conical shape with a large diameter at the bottom. In this way, the cylinder 2
If 0 is formed, the speed of the cyclone chamber 36, that is, the swirling speed of the dust-containing air that has flowed into the cyclone generating portion 24 becomes slower as it lowers.
5 can be easily dropped into the cyclone chamber 36.

FIG. 6 shows another modification of the cylindrical body 20. The lower portion of the tubular body 20 has an inverted conical shape with a small diameter. When the tubular body 20 is formed in this manner, the speed of the dust-containing air flowing into the cyclone generating section 24 increases as the swirling speed of the air decreases, so that the separation efficiency of the dust 45 in the cyclone generating section 24 is increased. Can be increased.

In FIG. 7, the dust collecting case 33 is provided with a partition plate portion 46 having a communication port 44. The partition plate portion 46 is formed to have a step by providing the dust collection case 33 with a communication port 44 having a shape smaller than the inner shape of the elastic seal member 18.

By providing the partition plate portion 46 between the cyclone generating portion 24 and the cyclone chamber 36 of the dust collection case 33, dust 45 in the cyclone chamber 36 is prevented from rising into the cyclone chamber 36.

FIG. 8 shows a modification of the partition plate portion 46. The partition plate portion 46 in FIG. 8 is formed in a tapered shape (substantially inverted conical shape) downward toward the dust collection case 33 side. By forming the partition plate portion 46 in this way, the dust 45 separated from the cyclone generating portion 24 can easily fall into the cyclone chamber 36, and the dust 45 in the cyclone chamber 36 can rise to the cyclone generating portion 24. To be prevented.

[0047]

As described above, according to the present invention,
The dust once separated in the cyclone generation part is less likely to rise from the dust collection part to the cyclone generation part,
The dust collection efficiency of the dust collector can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of an electric vacuum cleaner to which a dust container for an electric vacuum cleaner according to the present invention is applied.

FIG. 2 is a vertical sectional side view of a cleaner body to which the dust container for the electric vacuum cleaner according to the present invention is applied.

FIG. 3 is a vertical sectional side view showing a cyclone generating portion and a dust collecting portion.

4 is a cross-sectional view taken along the line AA in FIG.

FIG. 5 is a vertical cross-sectional side view showing a modified example of the cyclone generator.

FIG. 6 is a vertical cross-sectional side view showing another modification of the cyclone generator.

FIG. 7 is a vertical cross-sectional side view of a cyclone generation unit and a dust collection unit showing an example of a partition plate unit provided in the dust collection unit.

FIG. 8 is a vertical cross-sectional side view of a cyclone generator and a dust collector showing another example of the partition plate provided in the dust collector.

[Explanation of symbols]

A dust container for vacuum cleaner 1 Vacuum cleaner body 5 Suction mouth 7 Lower case (outer case) 17 Communication port for lower case 7 19 Opening of cylindrical body 20 24 Cyclone generator 33 Dust collection case (dust collection part) 33c, 33 Wall surface of dust collection case 33 35 bulkhead 36 Cyclone room 37 Dust collection chamber 38 Inlet 39 exhaust port 40 filters 41 Swirling flow in the cyclone chamber 42 Wind path 43 Cyclone (Swirl flow) 44 communication port 45 garbage 46 Partition board

Claims (9)

[Claims] 1. A cylindrical cyclone generating section that separates dust-containing air sucked by the suction port body into dust and air by centrifugal force, and dust from the cyclone generating section below the cyclone generating section. A dust collecting container for an electric vacuum cleaner, comprising: a dust collecting part for collecting; a cyclone generating part is disposed so as to be inclined in a vertical direction. 2. A cylindrical cyclone generating section for separating air containing dust sucked by the suction port body into dust and air by centrifugal force, and dust from the cyclone generating section below the cyclone generating section. A dust collecting container for an electric vacuum cleaner, comprising: a dust collecting portion for collecting, wherein an upper cross-sectional area of the dust collecting portion is larger than a lower cross-sectional area of the cyclone generating portion, and a volume of the dust collecting portion is equal to that of the cyclone generating portion. A dust container for an electric vacuum cleaner, which is larger than the volume of the part. 3. A cylindrical cyclone generating part for separating air containing dust sucked by the suction port body into dust and air by centrifugal force, and dust from the cyclone generating part below the cyclone generating part. A dust collecting container for an electric vacuum cleaner, comprising: a dust collecting part for collecting dust in the air, wherein the dust collecting part projects laterally from the cyclone generating part. . 4. A cylindrical cyclone generating section for separating air containing dust sucked by the suction port body into dust and air by centrifugal force, and dust from the cyclone generating section below the cyclone generating section. In a dust container for an electric vacuum cleaner, which comprises a dust collecting part for collecting dust in the air, the dust collecting part is divided into a cyclone chamber below the cyclone generating part and a dust collecting chamber for collecting dust and Partition walls each having an inflow port between them and an opposite wall surface part and a discharge port provided with a filter between the other wall surface part, and dust and air sucked from the inflow port into the dust collecting chamber. A dust collecting container for an electric vacuum cleaner, which forms an air passage through which air flows along the inner wall surface of the dust collecting chamber and is then discharged from the outlet into the cyclone chamber. 5. The dust collecting apparatus for a vacuum cleaner according to claim 4, wherein the cyclone generator is inclined toward the partition wall. 6. The outer case in which the dust collecting portion is stored is provided, and the dust collecting portion can be inserted into and taken out of the outer case and can be detached from the outer case. The dust container for the electric vacuum cleaner according to. 7. The electric vacuum cleaner according to claim 1, further comprising a partition plate portion provided with a communication port that communicates the cyclone generating portion and the dust collecting portion. Dust collection container. 8. The dust container for an electric vacuum cleaner according to claim 7, wherein the partition plate portion is tapered downward toward the dust collecting portion side. 9. An electric vacuum cleaner comprising the dust collecting container for an electric vacuum cleaner according to claim 1 inside a cleaner main body.