JP3365410B1 - Electric vacuum cleaner - Google Patents

Abstract

An object of the present invention is to provide a vacuum cleaner having a centrifugal dust collecting part (cyclone dust collecting part) which can realize particularly easy compression of fibrous dust with an inexpensive structure and which is improved in usability. SOLUTION: In a dust collection case 11, a separation chamber 22 for centrifugally separating dust, a first suction part 46 provided in the separation chamber 22 and communicating with an electric blower, and communicating with the separation chamber 22 to remove dust. A dust accommodating chamber 24 for accommodating the dust is provided, and the dust accommodating chamber 24 is provided with a second suction unit 49 communicating with the electric blower, so that the dust in the dust accommodating chamber 24 is effectively compressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner having a cyclone dust collecting portion that swirls intake air to separate dust.

[0002]

2. Description of the Related Art An electric vacuum cleaner having a conventional cyclone dust collecting unit is provided with a dust collecting device such as the electric vacuum cleaner disclosed in Japanese Unexamined Patent Publication No. 2000-342492 or the electric vacuum cleaner disclosed in Japanese Unexamined Patent Publication No. 9-253011. The dust separated by the cyclone dust collecting portion was simply deposited below the dust collecting portion while being affected by the swirling airflow in the cyclone dust collecting portion.

[0003]

However, in such an electric vacuum cleaner, since the dust accumulated in the dust collection case has a structure in which it is simply deposited as described above, it is particularly preferable to use a fiber or cotton cloth. In the case of dust containing a large amount of components, the bulky proportion to the absorbed mass is large. Dust with a large mass is swirled on the outer peripheral side by the centrifugal force received by the swirl in the cyclone dust collecting part, and the change (decrease) in the intake air volume passing through the main filter located on the inner peripheral part is reduced, but with the fibrous dust, Due to the small mass, the centrifugal separation effect in the cyclone dust collection part becomes insufficient, and the fibrous dust is adsorbed on the surface of the main filter part, and the suction air volume tends to be reduced, and the suction of the relatively small mass dust causes early suction. There was a problem that performance deteriorated.

Further, in order to accumulate a predetermined amount of dust in the dust collection case, it is necessary to mount a large-capacity dust collection case, which is against the recent trend toward smaller and lighter vacuum cleaners. .

Further, maintenance of the cyclone dust collecting portion to which dust has adhered has been an unsanitary work.

The present invention solves the above problems and provides an electric vacuum cleaner having a centrifugal dust collecting portion (cyclone dust collecting portion) which has an inexpensive structure and in particular compresses fibrous dust, and has improved usability. The purpose is to

[0007]

In order to achieve the above object, the present invention is directed to a front side of an electric blower that emits suction air and an intake air.
A dust collection case that communicates with the suction tool that sucks dust upstream
The dust collection case is provided in a direction substantially horizontal to the surface to be cleaned.
A separation chamber that is formed in a cylindrical shape and centrifuges dust, and
A first provided in an isolated chamber and communicating with the intake side of the electric blower
An air intake part and the separation chamber at least below the separation chamber
The dust storage chamber that stores the centrifugally separated dust and this dust
It is provided in the dust chamber and communicates with the intake side of the electric blower.
The second air intake section and an empty space that is sucked from the suction tool and contains dust.
The airflow flows in the tangential direction of the wall of the separation chamber which has a substantially cylindrical shape.
To the side of the wall of the substantially cylindrical separation chamber and the first
It is formed on the side of the intake part and connects the suction tool and the separation chamber.
The communication port B, a side portion of the wall of the separation chamber having the substantially cylindrical shape, and
The separation chamber and the dust are provided near the front wall forming the dust collection case.
In addition to having a communication port A that communicates with the storage chamber,
Wherein the intake section second air suction unit, detachable self from the dust collecting case
It is formed on the same existing frame, and the dust collection case and electric blower
Smell the vacuum cleaner that is placed between the suction side of the machine
The dust contained in the separation chamber through the communication port B.
The generated air flow is generated along the inner surface of the substantially cylindrical separation chamber.
It becomes a swirling vortex that flows in a direction substantially horizontal to the surface to be cleaned.
And centrifugally separated in the separation chamber, and the centrifugally separated dust
Dust collects from the separation chamber through the communication port A.
It is transported to the dust chamber together with the airflow flowing to the chamber.
Accumulated in the dust storage chamber, and then accumulated in the dust storage chamber.
The air that is directed to the second intake portion in a direction substantially horizontal to the surface to be cleaned.
Flow is pressed against the side of the second intake portion and compressed.
Are those that dust accumulated in the case, effectively performed especially compressed fibrous dust, to prevent the suction air volume reduction at the suction of the low-mass dust, those capable of improving the usability.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is
Dust in front of the electric blower that emits suction air and upstream of the intake air
A dust collection case that communicates with the suction tool that sucks
The dust case is formed in a substantially cylindrical shape in a direction substantially horizontal to the surface to be cleaned.
The separation chamber that centrifuges the dust and the
And a first air intake portion communicating with the air intake side of the electric blower,
Centrifuge in the separation chamber at least below the separation chamber.
The dust storage chamber that stores the collected dust and the dust storage chamber
The second air intake part that communicates with the air intake side of the electric blower
And the air flow containing dust that is sucked from the suction tool is
The flow is made to flow in the tangential direction of the wall of the separation chamber having a substantially cylindrical shape.
To the side of the wall of the substantially cylindrical separation chamber and to the side of the first intake section
Communication port B formed to connect the suction tool and the separation chamber
And a side portion of the wall of the separation chamber having the substantially cylindrical shape and the dust collecting case.
The separation chamber and the dust chamber near the front wall
It has a communication port A that communicates with the first intake section.
The second air intake part is the same as the one that is detachable from the dust collection case.
Formed on the frame of the dust collector case and the intake of the electric blower
In the vacuum cleaner arranged between the side and
An air flow containing dust that has flowed into the separation chamber from the opening B
Is a surface to be cleaned along the inner surface of the substantially cylindrical separation chamber.
It becomes a swirling vortex that flows in a substantially horizontal direction and separates from the dust.
Centrifuged in a chamber, the centrifugally separated dust,
Flow from the separation chamber to the dust storage chamber through the communication port A.
The dust is transferred to the dust chamber together with the
The surface to be cleaned that accumulates in the storage chamber and is in the dust storage chamber.
And a substantially horizontal direction toward the second intake section,
Note that it is pressed against the second air intake portion side and compressed, effectively compresses dust accumulated in the case, particularly fibrous dust, and prevents a reduction in the suction air amount due to suction of small mass dust. , The usability can be improved.

Further , the dust collection case includes a separation chamber for centrifugally separating the dust, a first air intake portion provided in the separation chamber for communicating with an electric blower, and a dust container for communicating with the separation chamber for accommodating the dust. By providing a chamber, and the second air intake section communicating with the electric blower in the dust storage chamber, especially the fibrous dust in the dust storage chamber can be effectively and always compressed when the cleaner is used, and as a compression means. It can be constructed at low cost by using intake air.

Further , the separation chamber is formed in a substantially cylindrical shape, and a communication port A for communicating the separation chamber and the dust storage chamber is formed in a part of the separation chamber, whereby centrifugal separation of dust in the separation chamber and an inner surface of the separation chamber are performed. Dust can be easily transferred along the line.

[0011] In addition, prior to the formation of the dust-collecting case the communication port A
By forming it on the wall side, the dust accumulated in the dust storage chamber is located on the side of the second air intake part in the direction of gravity even when the vacuum cleaner is set up and used, so that the dust is not located in the dust storage chamber. No significant changes occur, and good usability can be maintained. In addition, the dust-containing airflow sucked into the separation chamber completely passes through the separation chamber and flows into the dust storage chamber from the communication port A at the front end of the main body, so that the suction performance of the first intake portion can be maintained for a long time.

Further, the dust accommodating chamber is provided at least below the separation chamber, and when the cleaner is used, the dust is largely displaced due to the most stable position, that is, the dust in the dust accommodating chamber sucked during use. It is possible to prevent rolling noise from being generated and to prevent backflow into the separation chamber to reduce suction performance.

The invention according to claim 2 of the present invention is the first intake air
Part is a dust filter for covering the first intake part.
The filter for dust filtration is provided on the electric blower side.
The diameter should be roughly conical in the horizontal direction so that the diameter becomes larger.
Or the shape of a truncated cone, and the air flow containing dust is
Inflow from the tangential direction above the outer periphery of the filter for filtration
The communication port B is formed so as to ensure the centrifugal separation performance of dust and air in the separation chamber, and at the same time prevent dust from adhering to the filter by the flow of the intake air that flows in at the same time, while retaining dust in the separation chamber. Can be prevented.

[0014] The intake flow into the separation chamber from the communication port B, by causing to flow from the upper side in the filter,
It is possible to prevent dust from adhering to the filter.

Further , the filter for filtering dust is an electric blower.
Approximately horizontal to the surface to be cleaned so that the diameter on the machine side is larger
By making it a substantially conical shape or a truncated cone shape in the direction,
The effect of preventing dust from adhering to the tar can be enhanced.

The invention according to claim 3 of the present invention is the dust collecting case.
The surface of the cleaning chamber is below the separation chamber and above the dust chamber.
A wall that forms the separation chamber and the dust storage chamber in a substantially horizontal direction
It is surrounded by and is partitioned and communicates with the suction tool.
Has a suction port to remove dust from the suction port together with the airflow.
The dust transfer chamber is provided for transferring to the separation chamber.
The bottom surface of is gradually upward from the suction port side to the communication port B side.
It can be easily transported to the separation chamber even if it has a large mass, and even if the volume of the same dust collection case is small, the volume of the dust transfer chamber is small and the volume of the dust storage chamber is large. It is possible.

According to a fourth aspect of the present invention , the first air intake portion and the second air intake portion are always communicated with the air intake side of the electric blower, so that the sucked dust in the dust accommodating chamber is constantly discharged by the second air intake portion. It can be aspirated and compressed.

The invention according to claim 5 of the present invention is directed to dust filtration.
The filter for use is made up of a main filter that covers the first intake section and a substantially mesh-shaped prefilter that covers the main filter, so that a space is secured between the main filter and the prefilter, and the dust storage chamber is protected from dust. Even when it becomes full and dust is accumulated in the separation chamber, it is possible to prevent clogging of the main filter due to dust and effectively delay the reduction of the suction air volume to maintain the suction performance.

[0019] The invention according to claim 6 of the present invention is, by opening the tip end side of the prefilter, the removal and cleaning of the dust that has entered between the pre-filter and main filter can be easily.

[0020]

EXAMPLES Example 1 Hereinafter, a first example of the present invention will be described with reference to FIGS.

In FIG. 1, an electric vacuum cleaner 1 has a suction tool 3 attached to an extension tube 2 for sucking dust.
Is connected to a cleaner body 7 (hereinafter referred to as body 7) via a handle 4 and a hose 6 with a hose joint 5. The main body 7 includes one pivotally supported front wheel caster 8 and a pair of rear wheels 9.

As shown in FIGS. 2 and 3, a dust collecting case 11 is detachably mounted in a recess 10 formed in the front of the main body 7. Behind the recess 10 of the main body 7, an electric blower 12 that emits suction air is built in. The suction side of the electric blower 12 communicates with the air suction portion 14 through the opening 13. The air suction portion 14 is surrounded by an inclined sealing surface 15 that abuts the dust collection case 11 when the dust collection case 11 is placed. An exhaust filter 16 is also provided at the rear of the main body 7, and the exhaust gas from the electric blower 12 passing through the exhaust filter 16 is discharged to the outside of the main body 7 as indicated by an arrow in FIG. 7 is another component, that is, an electric system such as the control unit 17 and a cord winding device.
(Not shown) etc. are built in.

The front wall 18 of the main body 7 stands up from the bottom wall 19, and this bottom wall 19 is the lower end surface of the recess 10. An intake port 20 for detachably connecting the hose joint 5 is provided at substantially the center of the front wall 18. The seal packing 21 is attached to the end surface of the intake port 20 on the concave portion 10 side to prevent air leakage between the intake port 20 and the dust collection case 11.

As shown in FIGS. 4 to 6, the dust collection case 11
In the three chambers extending substantially horizontally in the front-rear direction, that is, the dust transport chamber 23 for guiding the dust-containing airflow that has passed through the intake port 20 to the centrifugal separation chamber 22, and the centrifugal separation in the separation chamber 22. Three chambers, namely, a dust storage chamber 24 for accumulating dust are formed, and these chambers are partitioned from each other.

Dust collection case 11 forming the dust transfer chamber 23
The case front wall 25 has a suction port 26 formed therein, and the suction port 26 is concentric with the suction port 20 when the dust collection case 11 is set in the main body 7. The dust transfer chamber 23 is separated from the separation chamber 22 by a first wall portion 27.
And a second wall portion 28 for partitioning the space from the dust storage chamber 24. These first wall portion 27 and second wall portion 2
Reference numeral 8 is a part of a separation chamber wall 29 formed in a substantially cylindrical shape on the upper side of the center of the dust collection case 11 so as to form the separation chamber 22.

At the end of the dust transfer chamber 23 on the side away from the case front wall 25, a communication port B3 provided in the first wall portion 27.
0 is provided to connect the dust transfer chamber 23 and the separation chamber 22 to each other, and the airflow flowing from the dust transfer chamber 23 into the separation chamber 22 is allowed to flow in the inner circumferential tangential direction of the separation chamber wall 29.

The separation chamber 22 has a first end wall 31 and a second end wall 3.
There is 2. The first end wall 31 is a part of the lid plate 33, and details of the lid plate 33 will be described later. Also, the second end wall 3
2 is a part of the case front wall 25. Separation chamber 2
2 has a separation chamber central portion 34 between both end walls 31, 32. A communication port A35 is formed in the separation chamber wall 29 in the vicinity of the second end wall 32 of the separation chamber central portion 34, and connects the separation chamber 22 and the dust storage chamber 24. As shown in FIG. 5, the communication port A35 is provided on the side of the separation chamber wall 29, and the dust centrifugally separated in the separation chamber 22 passes through the communication port A35 as shown by the arrow in FIG. It is transported into the dust storage chamber 24.

The dust accommodating chamber 24 forms a partition between the dust transport chamber 23 and a second wall portion 28, a separation chamber wall 29, a case front wall 25 of the dust collecting case 11, a case bottom wall 36, and both side surfaces. It is surrounded by the side wall 37. The dust transfer chamber 23, the separation chamber 22, and the dust storage chamber 24 each have a completely open end wall at the rear end of the dust collection case 11, but they are normally closed by a cover plate 33. In a normal state, the lid plate 33 is mounted and fixed to the dust collection case 11, but when the dust in the dust storage chamber 24 is discharged and emptied, it is removed from the dust collection case 11.

As shown in FIG. 4, the cover plate 33 is detachably attached by mounting the filter frame 39 having the packing 38 fitted on the outer periphery thereof in the opening of the dust collection case 11 on the electric blower 12 side without any gap. The packing 38 has an inclined sealing surface 1 when the dust collection case 11 is attached to the recess 10.
The state of being lightly crimped to the main body 5 prevents outside air from flowing into the air suction portion 14 from outside the main body 7.

Reference numeral 42 denotes a filter which is located substantially concentrically in the separation chamber 22 and which is formed integrally with the filter frame 39.
A plurality of ventilation openings A 43, each of which has a substantially cylindrical shape and has a frame A44 having a large number of ventilation openings A43 on its peripheral surface, and a non-woven fabric filter A45 which covers the frame A44 from the separation chamber 22 side to filter and collect fine dust. As a whole, the first air intake portion 46 that connects the separation chamber 22 and the electric blower 12 is formed.

Reference numeral 47 is a ventilation opening B formed in the filter frame 39 so as to face the dust storage chamber 24, and is covered with a substantially conical nonwoven fabric filter B48. The ventilation opening B47 connects the dust storage chamber 24 and the electric blower 12 to each other,
Are configured.

A handle 50 is formed above the dust collection case 11 as shown in FIGS. 4 and 6. Handle 5
The rear part of 0 is provided with a buckle button 51 that is operated when the dust collection case 11 is removed from the cleaner body 7. The buckle button 51 receives the biasing force of the spring 52 and engages with the main body 7.

Next, the operation and action of the above configuration will be described.

When the electric blower 12 is operated, the dust-containing air flow sucked from the suction tool 3 flows into the intake port 20 through the extension pipe 2 and the hose 6. This air flow enters the dust transfer chamber 23 through the suction port 26 and further flows toward the end covered with the cover plate 33. Dust particles such as sand dust having a large mass flow along the inner bottom surface of the dust transfer chamber 23, and dust having a light fiber mass together with the airflow pass through the communication port B 30 one after another to the separation chamber 22. enter.

The air entering the separation chamber 22 is
Flows in the tangential direction of the substantially cylindrical separation chamber walls 29 that form a, along the inner surface of the separation chamber wall 29 become a swirling vortex flow leads to the separation chamber central portion 34 as communication port A35 to. And separation room 2
The dust entering 2 is subjected to the action of the centrifugal force generated by the swirling vortex, is transported to the first wall portion 27 while rotating along the inner surface of the separation chamber wall 29, and is blown by the centrifugal force from the communication port A35. Thus, the dust storage chamber 24 is entered.

The air at the center of rotation of the swirling vortex has almost no dust, but about 80% of the dust-containing air that has entered the separation chamber 22 is after fine dust is filtered by the filter 42. , Is sucked into the electric blower 12 from the first intake section 46.

The remaining about 20% of the dust-containing airflow enters the dust storage chamber 24, is filtered by the non-woven fabric filter B48, and is sucked into the electric blower 12 through the second air intake section 49. The airflow of (1) passes through the exhaust filter 16 to be further dust-removed, and is exhausted to the outside of the main body 7.

The dust that has entered and accumulated in the dust storage chamber 24 is compressed by the wind pressure pressed against the non-woven fabric filter B 48 by the above-mentioned about 20% airflow from the communication port A 35 toward the second intake portion 49, It is possible to accumulate dust having a volume larger than that of the dust storage chamber 24. In particular, the effect becomes great when sucking fibrous dust that is bulky with respect to the mass.

When the dust and the like accumulated inside the vacuum cleaner are discarded, the buckle button 51 provided on the handle 50 is pushed to unlock the dust collection case 11 and lifted from the recess 10 of the main body 7. Next, the cover plate 33 is removed from the dust collection case 11, and the electric blower 12 side of the dust collection case 11 is opened. Then, when the dust collection case 11 is tilted so that the case front wall 25 faces upward, the dust transfer chamber 23 and the separation chamber 2
2. The dust in the dust chamber 24 can be discharged all at once to the trash can or the like. Even if dust is attached to the inside of the dust collection case 11, it can be easily washed with water in the above state and can be hygienically cleaned.

By the way, the dust in the separation chamber 22 is immediately transported into the dust storage chamber 24 after being centrifuged, and as a result, the amount of intake air sucked from the first intake section 46 to the electric blower 12 is The suction performance at the beginning of use can be maintained without being affected by the amount of dust accumulated in the chamber 24 and maintaining a substantially constant state.

As already described, the dust in the dust storage chamber 24 is simultaneously compressed into the dust storage chamber 24 with an intake air volume of about 20% sucked by the electric blower 12 from the second intake section 49. Especially, when a large amount of fibrous dust is sucked in, a large amount of dust can be accumulated. In addition,
Due to the flow of intake air from the second intake section 49 to the electric blower 12, the centrifugally separated dust in the separation chamber 22 is immediately conveyed into the dust storage chamber 24 without staying in the separation chamber 22. Needless to say.

By the way, the separation chamber wall 2 forming the separation chamber 22
9 is formed in a substantially cylindrical shape, and a communication port A35 for communicating the separation chamber 22 and the dust storage chamber 24 is formed in a part thereof,
The suctioned dust in the separation chamber 22 can be transported by centrifugal force from the communication port A35 to the dust storage chamber 24 while being centrifugally separated,
Easy dust transfer.

Particularly, the communication port A35 is formed into the dust collecting case 11.
By forming it on the side of the second end wall 32 which is a front wall to be formed, the dust storage chamber 2
The dust accumulated in 4 is always positioned on the second intake portion 49 side due to the two forces of gravity and suction of the second intake portion 49, and the dust inside the dust storage chamber 24 can change its position greatly. It does not happen, and good usability can be maintained. Further, the second end wall, which is a front wall, in which the dust- containing airflow sucked into the separation chamber 24 completely passes through the separation chamber 22 to form the dust collection case 11.
The non-woven fabric filter A45 of the filter 42 has a structure in which it flows from the communication port A35 near 32 into the dust storage chamber 24.
The phenomenon in which dust adheres to the first suction portion 46 does not occur, and the suction performance of the first suction portion 46 can be maintained for a long time.

Next, since at least the lower part of the separation chamber 22 is set as the dust storage chamber 24, the dust sucked while using the main body 7 is at the most stable position, that is, the dust collection case 1.
It will be located at the bottom of 1. Therefore, during use of the present vacuum cleaner, the dust in the dust storage chamber 24 is not largely displaced and rolling noise is generated, and the suction performance is not deteriorated by backflow into the separation chamber 22.

A dust transfer chamber 23 is provided upstream of the separation chamber 22 of the dust collection case 11 in the intake direction, and the filter 42 and the communication port B30 are formed near the end face of the dust collection case 11 on the electric blower 12 side. Since the intake flow sucked into the separation chamber 22 is made to flow from the tangential direction of the outer periphery of the filter 42, the performance of centrifugal separation of dust and air in the separation chamber 22 can be improved, and the intake flow Small mass dust such as fibrous dust that tends to adhere to the non-woven fabric filter A45 can also be blown off, and dust adhesion to the filter 42 and dust accumulation in the separation chamber 22 can be prevented.

In particular, when the intake air flowing into the separation chamber 22 through the communication port B30 is made to flow in from the upper end side of the filter 42, a swirling vortex flow is surely generated in the separation chamber 22 to further prevent dust from adhering to the filter 42. Therefore, the centrifugal separation performance can be secured.

In addition, since the bottom surface of the dust transfer chamber 23 is formed by gradually inclining upward from the front of the main body 7 toward the communication port B30 side, even if a large amount of dust is sucked, the separation chamber can be easily separated. 22 can be transported. Further, even if the volume of the dust collection case 11 is the same, the volume of the dust transfer chamber 24 becomes small, so that the volume of the dust storage chamber 24 can be relatively increased.

Further, the filter 42 is the electric blower 12
The diameter of the separation chamber 22 is large, and the diameter of the end face on the front side of the main body 7 is small.
The passage area through which the swirling vortex flows inside expands in the direction in which the air flow flows, allowing smooth swirling, which enhances the centrifugal separation effect and the effect of preventing dust from adhering to the filter 42.

Further , in FIG. 7, reference numeral 60 denotes a separation chamber wall 29.
Is a communication port lid that opens and closes a communication port B30 provided on the upper side surface of the. It is formed of a soft material such as synthetic rubber into a thin plate shape, and the upper side is separated from the dust storage chamber 24 side to the separation chamber wall 29.
Is stuck to . The communication port B30 is covered from the dust storage chamber 24 side along the substantially cylindrical separation chamber wall 29. During operation of the electric blower 12, the electric blower 1 is driven from the first intake section 46.
The amount of air sucked into the electric blower 1 is from the second air intake section 49.
Since it is larger than the amount of air sucked into 2, the communication port lid 60 is sucked toward the separation chamber 22 side by the suction air amount difference and closes the communication port B30, but the dust in the separation chamber 22 collides with the communication port lid 60 by centrifugal force. Then, by the load, as shown by the alternate long and short dash line in FIG. 7, the upper side portion fixed to the separation chamber wall 29 is rotated around the rotation center to open the communication port B30, and the dust is stored in the dust storage chamber 24.

The operation and action of the above configuration will be described.

When the dust storage chamber 24 is filled with dust due to continued use of the vacuum cleaner, the dust around the communication port B30 is sucked into the electric blower 12 from the first intake section 46 when the communication port lid 60 is not provided. Separation chamber 2 affected by the generated air flow
2 will flow backwards, but the communication port lid 60 will be connected to the communication port B.
Since 30 is covered from the dust storage chamber 24, this backflow can be completely prevented and good usability can be maintained for a long period of time.

Since the communication port lid 60 has a structure in which the upper side portion is simply fixed to the upper part of the communication port B30,
It is possible to provide an electric vacuum cleaner of this configuration at low cost.

Further , the first intake section 46 and the second intake section 49
Is always in communication with the electric blower 12, the separation chamber 22
The second suction section can constantly suck and compress the dust that has been centrifugally separated and sucked inside and has been conveyed into the dust storage chamber 24, increasing the amount of dust that can be accumulated in the dust collection case 11 and improving the usability. It can be improved.

Next (Example 2), the second embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

Main filter 6 for covering the first intake section 46
5 is made of a non-woven fabric and is fixed to the filter frame 39. A pre-filter 67 having a net net 66 on the peripheral surface with a predetermined gap around the main filter 65 is detachably attached to the filter frame 39.
An opening 68 is formed on the end surface of the pre-filter 67 on the communication port B30 side.
Are formed.

Next, the operation and action of the above configuration will be described.

Among the dust carried into the separation chamber 22, the fibrous dust has a small centrifugal force received by the swirling vortex in the separation chamber and easily clings to the main filter 65 made of non-woven fabric. It covers the peripheral surface to prevent adhesion.

Further, even when the dust storage chamber 24 is filled with dust and dust is accumulated in the separation chamber 22, a space is secured between the main filter 65 and the pre-filter 67 so that the dust can prevent the main filter 65 from seeing. Prevents clogging and delays the reduction of the suction air volume to maintain suction performance.

Further, by having an opening 68 at the front end of the main body 7 of the pre-filter 67, the pre-filter 67 is
The dust gradually entering between the main filter and the main filter can be easily removed and cleaned at the same time when the dust in the dust collection case 11 is discarded.

[0060]

As described above, according to the present invention, there is provided an electric vacuum cleaner having a centrifugal dust collecting portion (cyclone dust collecting portion) which is inexpensive and realizes compression of particularly fibrous dust and has improved usability. Can be provided.

[Brief description of drawings]

FIG. 1 is an external view of a vacuum cleaner showing a first embodiment of the present invention.

FIG. 2 is an external view of the main body of the electric vacuum cleaner.

FIG. 3 is a cross-sectional view of the main part of the main body of the vacuum cleaner with the dust collection case removed.

FIG. 4 is a sectional view of a dust collection case equipped with the lid.

5 is a sectional view taken along line ZZ of the dust collection case in FIG.

6 is a cross-sectional view taken along line YY of the dust collection case in FIG.

FIG. 7 is a ZZ cross-sectional view of the dust collection case in FIG. 4 when a lid is provided at the same communication port B.

FIG. 8 is a sectional view of a lid body showing a second embodiment of the present invention.

[Explanation of symbols]

11 Dust collection case 12 Electric blower 22 Separation room 24 Dust storage chamber 46 First intake section 49 Second intake section

Front Page Continuation (72) Inventor Seiji Ishikawa 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inori Yasunori Tsuzaki 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72 ) Inventor Masafumi Okushima 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Tetsuji Nomachi 1006 Kadoma, Kadoma City Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Koji Yamamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47L 9/10 A47L 9/16 A47L 9/20

Claims (6)

(57) [Claims] 1. An electric blower which emits suction air and sucks air in front of the electric blower.
Dust collection case that communicates with a suction tool that sucks dust toward the upstream side
Is provided on the dust collection case in a direction substantially horizontal to the surface to be cleaned.
A separation chamber that is formed in a substantially cylindrical shape and centrifuges dust,
The first one that is provided in the separation chamber and communicates with the intake side of the electric blower.
1 an intake part and the separation chamber at least below the separation chamber
Dust storage chamber that stores the dust that has been centrifugally separated by
It is provided in the dust chamber and communicates with the intake side of the electric blower.
A second suction part that contains dust and dust that is sucked from the suction tool.
The air flow is tangential to the wall of the substantially cylindrical separation chamber.
To the side of the wall of the substantially cylindrical separation chamber and
1. Formed on the side of the intake section to connect the suction tool and the separation chamber
Communication port B and a side portion of the wall of the separation chamber having the substantially cylindrical shape.
The separation chamber and the dust near the front wall forming the dust collection case.
In addition to having a communication port A for communicating the dust chamber,
The first intake part and the second intake part are detachable from the dust collection case.
It is formed on the same frame that can be freely installed,
The vacuum cleaner that is placed between the intake side of the wind blower and the
The dust contained in the separation chamber through the communication port B.
The generated air flow is generated along the inner surface of the substantially cylindrical separation chamber.
It becomes a swirling vortex that flows in a direction substantially horizontal to the surface to be cleaned.
And centrifugally separated in the separation chamber, and the centrifugally separated dust
Dust collects from the separation chamber through the communication port A.
It is transported to the dust chamber together with the airflow flowing to the chamber.
Accumulated in the dust storage chamber, and then accumulated in the dust storage chamber.
The air that is directed to the second intake portion in a direction substantially horizontal to the surface to be cleaned.
Flow is pressed against the side of the second intake portion and compressed.
Vacuum cleaner that. 2. The first air intake section is dust that covers the first air intake section.
Has a filter for dust filtration, and the filter for dust filtration
The diameter of the rotor is larger on the electric blower side.
On the surface to be cleaned and in a substantially conical or frustoconical shape
However, the air flow containing dust is a filter for filtering the dust.
From the tangential direction above the outer circumference of the
The vacuum cleaner according to claim 1, which is formed . 3. The dust collection case is located below the separation chamber and collects dust.
Above the chamber, the separation chamber and the
Partition type on together when surrounded by walls forming a dust storage chamber
Has a suction port that communicates with the suction tool.
Dust transfer chamber that transfers dust from the air to the separation chamber together with the air flow
The bottom surface of the dust transfer chamber has a communication port from the suction port side.
The method according to claim 1 or 2, which is gradually inclined upward toward the B side.
The electric vacuum cleaner described in 2 . 4. The electric vacuum cleaner according to claim 1, wherein the first air intake portion and the second air intake portion are always in communication with the air intake side of the electric blower during operation of the electric blower. 5. A filter for filtering dust is formed of a main filter that covers the first air intake portion and a substantially mesh-shaped prefilter that covers the main filter .
The vacuum cleaner according to any one of 4 above. 6. A front end side of the prefilter vacuum cleaner of the opening and formed by claim 5, wherein.