JP2012183085A - Dust collection device for vacuum cleaner, and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust collection device for a vacuum cleaner that has an enhanced centrifugal separation performance and an increased dust collection capacity.SOLUTION: The dust collection device includes: a centrifugal separation unit 23 in which a primary filter 22 for separating dust from suction air sucked by an electric fan is disposed; a secondary filter 24 for capturing fine dust the centrifugal separation unit 23 has failed to capture; a dust storing chamber 26 for storing dust centrifugally separated in the centrifugal separation unit 23; a fine dust storing chamber 27 for storing fine dust captured by the secondary filter 24; a bottom lid 28 for opening and closing the dust storing chamber 26 and the fine dust storing chamber 27; and a first communication portion 32 located on the downstream side of the secondary filter 24, and communicating with the electric fan. The bottom lid 28 is disposed with a second communication portion 42 to act the suction pressure of the electric fan 12 on the bottom lid. With the suction pressure acting on the bottom lid 28 disposed at the bottom of the dust collecting chamber 26, the dust separated in the centrifugal separation unit 23 is smoothly transferred to the dust collecting chamber 26 and prevented from being stirred up, and also a mass of collected dust can be compressed into a compact size.

Description

  The present invention relates to a dust collector for an electric vacuum cleaner and an electric vacuum cleaner.

  As a conventional vacuum cleaner dust collector, a plurality of filters that act on the suction pressure are arranged, and the suction pressure on each side of the suction section is filtered by switching the suction pressure to each filter alternately. There has been proposed one that peels off and transfers dust adhering to (see, for example, Patent Document 1).

Japanese Patent No. 3365411

  However, in the conventional vacuum cleaner, the dust collecting device once collects dust around the separation filter and then moves to a room with another filter, so that the dust separation filter is likely to wind up. There was a problem.

  In particular, in a vacuum cleaner having a dust separation means using centrifugal separation, it is preferable that the sucked dust moves to a position away from the separation means as soon as possible, and the stored dust rises again after separation. There was a need to avoid drifting around the separation means.

  The present invention solves the above-mentioned conventional problems, and fixes the centrifugally separated dust in the dust storage chamber to suppress the rising, to improve the centrifugal separation performance and to increase the dust collection capacity, and to collect the dust in the vacuum cleaner. An object is to provide an apparatus and a vacuum cleaner.

  The dust collecting device for a vacuum cleaner according to the present invention includes a centrifugal separation means provided with a primary filter for separating dust from suction air sucked by an electric blower, and fine dust that cannot be collected by the centrifugal separation means. A secondary filter to be collected, a dust storage chamber for storing the dust centrifuged by the centrifuge, a fine dust storage chamber for storing fine dust collected by the secondary filter, the dust storage chamber, A bottom lid that opens and closes the fine dust storage chamber; and a first communication portion that is located downstream of the secondary filter and communicates with the electric blower. A second communicating part for applying pressure is provided, and the dust separated by the centrifugal separator is sucked into the bottom cover at the bottom of the dust storage chamber so that the dust moves smoothly to the dust storage chamber side. Pressure is applied.

  As a result, the dust sucked into the bottom lid is less likely to rise, is compressed and compact, and closes to the bottom lid side, so that it is difficult to remain in the dust storage chamber even when the waste is discarded, and can be easily discarded.

  Moreover, the vacuum cleaner of this invention has the vacuum cleaner main body which incorporates the electric blower which generate | occur | produces a suction pressure, and the dust collector of the vacuum cleaner of any one of Claims 1-4. Therefore, it is possible to provide an excellent vacuum cleaner capable of ensuring high dust separation performance and a large volume of dust collection.

  The dust collector of the vacuum cleaner according to the present invention reduces the phenomenon that the dust separated by the centrifugal separation rises again from the dust storage portion, exhibits high centrifugal performance, and compresses the dust in the dust storage chamber. Therefore, a large amount of dust can be stored in a limited volume, and high separation performance and high dust collection capacity can be realized. Moreover, a user-friendly vacuum cleaner can be provided by mounting the dust collector of the vacuum cleaner on the vacuum cleaner.

Sectional drawing of the vacuum cleaner main body of the vacuum cleaner carrying the dust collector of the vacuum cleaner in Embodiment 1 of this invention Side sectional view of the dust collector Side sectional view showing operation of the dust collector Side sectional view showing operation of the dust collector

  According to a first aspect of the present invention, there is provided a centrifugal separator having a primary filter for separating dust from suction air sucked by an electric blower, and a secondary filter for collecting fine dust that could not be collected by the centrifugal separator. A dust storage chamber for storing the dust centrifuged by the centrifugal separator, a fine dust storage chamber for storing the fine dust collected by the secondary filter, the dust storage chamber, and the fine dust storage chamber. A bottom lid that opens and closes, and a first communication portion that is located on the downstream side of the secondary filter and communicates with the electric blower, and for causing the suction pressure of the electric blower to act on the bottom lid A second communication part is provided, and suction pressure is applied to the bottom lid at the bottom of the dust storage chamber so that the dust separated by the centrifugal separator smoothly moves to the dust storage chamber side. is there.

  As a result, the dust sucked into the bottom lid is less likely to rise, is compressed and compact, and closes to the bottom lid side, so that it is difficult to remain in the dust storage chamber even when the waste is discarded, and can be easily discarded.

  In the second invention, in particular, the first communication part and the second communication part of the first invention switch the distribution of the suction pressure of the electric blower to the first communication part and the second communication part. It is designed to be able to communicate with an intake passage provided with a switching means, and by combining with automatic control or the like, it is possible to adjust the timing for applying suction pressure to the bottom cover appropriately according to the dust storage state. For example, at the start of operation of the vacuum cleaner, after applying suction pressure to the bottom lid side for a few seconds, switching to normal centrifugation, etc., after the storage volume of the dust storage chamber has expanded, etc. Appropriate conditions can be created easily with automatic control.

  In the third invention, in particular, the bottom cover of the first or second invention is provided with a fine dust filter for separating dust from the suction air, and the fine dust filter is communicated with the second communication portion. In addition to preventing the dust from rising, fine dust separation from the suction air is also performed, so that the dust collection rate is improved.

  In the fourth invention, in particular, a compression body that communicates with the second communication portion of any one of the first to third inventions and that moves in conjunction with the suction pressure of the electric blower is provided in the dust storage chamber. Thus, when suction pressure is applied to the bottom cover, the dust accumulated in the vicinity of the bottom cover can be compressed by moving in the direction of compressing the dust in the vicinity of the bottom cover. Therefore, by compressing dust in a limited dust storage chamber, the amount of dust that can be stored can be increased, and more dust can be stored.

The vacuum cleaner which concerns on 5th invention has the vacuum cleaner main body which incorporates the electric blower which generate | occur | produces suction pressure, and the dust collector of the vacuum cleaner of any one of Claims 1-4 Thus, it is possible to provide an excellent vacuum cleaner that can ensure high dust separation performance and a large volume of dust collection.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a cross-sectional view of a vacuum cleaner main body of a vacuum cleaner equipped with the vacuum cleaner dust collector in Embodiment 1 of the present invention, FIG. 2 is a side cross-sectional view of the dust collector, and FIG. FIG. 4 is a side sectional view showing the operation of the dust collector, and FIG. 4 is a side sectional view showing the operation of the dust collector.

  In FIG. 1, a dust collector 11 (hereinafter referred to as “dust collector 11”) of the vacuum cleaner in the present embodiment is a dust collector storage portion 15 disposed at the front of the cleaner body 10 of the vacuum cleaner. It is stored in. An electric blower chamber 13 that houses an electric blower 12 is disposed at the rear of the cleaner body 10.

  A hose (not shown) is connected to the hose connection port 19 of the dust collector housing 15, an extension pipe (not shown) is attached to the tip of the hose, and a floor suction is attached to the tip of the extension pipe. Tools (not shown) are connected. The downstream side of the dust collector housing 15 is connected to the electric blower chamber 13, and the suction pressure of the electric blower 12 is applied to the dust collector 11.

  Below, the structure and operation | movement of the dust collector 11 in this Embodiment are described in detail.

  The cross-sectional views shown in FIGS. 2 and 3 omit the illustration of the cleaner body 10 and show only the dust collector 11 of the present invention, but the operation inside the dust collector 11 is attached to the cleaner body 10. This represents the state when driving.

  The dust collector 11 collects fine dust that could not be collected by the centrifugal separator 23 that serves as a centrifugal separator having a handle 21 for transportation, a cylindrical primary filter 22, and the centrifugal separator 23. The secondary filter 24, the dust removal device 25 that vibrates the secondary filter 24, the dust storage chamber 26 that stores the dust separated by the centrifugal separator 23, and the dust removal device 25 that is separated by the secondary filter 24 A fine dust storage chamber 27 for storing fine dust dropped from the next filter 24 and a bottom lid 28 for simultaneously opening and closing the dust storage chamber 26 and the fine dust storage chamber 27 are provided.

  In the centrifugal separator 23, the suction air containing dust taken from the suction port 31 disposed on the side surface of the outer cylindrical portion 30 formed concentrically with the cylindrical primary filter 22 swirls along the outer periphery of the primary filter 22. In the meantime, most of the dust is blown by the centrifugal force in the direction of the outer cylindrical portion 30, and only air containing a small amount of fine dust passes through the primary filter 22. The dust blown in the direction of the outer cylindrical portion 30 by the centrifugal force moves to the dust storage chamber 26 while turning by the action of inertia force and its own weight.

  On the other hand, the air containing a small amount of fine dust that has passed through the primary filter 22 flows into the secondary filter 24, where the fine dust is filtered and only clean air passes. The passed clean air passes through the first communication portion 32 provided downstream of the secondary filter 24 and reaches the intake passage 33 disposed at the rear portion of the dust collector 11.

  The bottom cover 28 is pivotally connected to the dust storage chamber 26 by a hinge 34 and is formed hollow by an upper plate 35 and a lower case 36.

  A center packing of the upper plate 35 is provided with a bottom packing 37 that is in close contact with the fine dust storage chamber 27 and expands and contracts by the suction pressure of the electric blower 12, and a fine dust filter 38 disposed on the outer periphery thereof. A tight packing 39 that secures the airtight seal with the dust storage chamber 26 is provided.

  A foam filter 40 acting as a resistor for allowing the suction pressure to be applied uniformly to the fine dust filter 38 is disposed downstream of the fine dust filter 38. The bottom lid 28 communicates with the intake passage 33 through the second communication portion 42, and the suction pressure of the electric blower 12 is applied to the inside of the bottom lid 28 via the intake passage 33.

  The intake passage 33 is connected to the first communication portion 32 and the second communication portion 42, and an electric blower connection port 43 is formed on the downstream side, and a support for ensuring sealing with the electric blower 12. It contacts the rubber 44.

  At the same time, the suction port 31 is in contact with the intake packing 18 provided in the hose connection port 19 of the dust collector housing 15, and is thereby sealed from the hose connection port 19 to the dust collector 11 and the electric blower 12. An air passage is formed.

  At the center of the electric blower connection port 43, an opening area of the electric blower connection port 43 is divided into upper and lower parts, and a switching valve 45 is provided as a switching means for switching the ventilation area and the airflow pressure loss depending on the inclination angle. The inclination angle is controlled by a driving device (not shown).

  In the present embodiment, the intake passage 33 is fixed to the dust collector 11, but the intake passage 33 and the switching valve 45 may be provided in the cleaner body 10. The operation and effect of the present invention can be achieved as long as the first communication unit 32 communicates with the centrifugal separation unit 23 of the dust collector 11 and the second communication unit 42 communicates with the inside of the bottom cover 28. It can be demonstrated.

  The fine dust storage chamber 27 is attached to the cylindrical primary filter 22 by a hook 46 so as to be movable up and down, and a dome-shaped compression body 47 is integrally formed around the periphery.

  An elastic cylindrical packing 48 fixed to the primary filter 22 is attached between the compression body 47 and the primary filter 22. The compression body 47 expands and contracts with the vertical movement of the compression body 47. Air tightness between the primary filters 22 is secured.

  A dust removing device 25 that vibrates the secondary filter 24 includes a propeller fan 51 that is rotated by air sucked from an outside air intake 50 and a plurality of vibration bodies 52, and is connected to the propeller fan 51 and coaxially. When the outside air valve 54 is opened and outside air is taken in, the vibrating body 52 rotates and continuously strikes the secondary filter 24, so that the secondary filter 24 vibrates. The fine dust attached to the surface is peeled off and stored in the fine dust storage chamber 27.

  The operation of the dust collector 11 in the present embodiment will be described below.

  When the vacuum cleaner body 10 is operated and the electric blower 12 generates suction pressure, dust-containing air is sucked through the floor suction tool, passes through the extension pipe and the hose, and is collected from the hose connection port 19. Enter 11.

Most of the dust from the suction air that has entered the dust collector 11 through the suction port 31 is separated by the centrifugal separator 23, and the separated dust is accumulated in the dust storage chamber 26.

  At this time, the switching valve 45 is controlled to an angle at which the suction pressure of the electric blower 12 is more applied to the first communication part 32, a strong swirl flow is formed in the centrifugal separator 23, and dust rotates at high speed. Centrifuge.

  At the same time, the suction pressure of the electric blower 12 is applied to the second communication portion 42 although it is smaller than the first communication portion 32, and the suction pressure is also applied to the bottom lid 28.

  Therefore, an airflow that flows downward is generated in the vicinity of the fine dust filter 38, and the action of attracting the dust that has been separated from the centrifugal separator 23 and descended while turning to the dust storage chamber 26 to the bottom cover 28 has been lowered. The dust is prevented from rising again to the centrifugal separator 23 due to inertia or the like, and fine dust in the dust storage chamber 26 is also collected.

  Thereby, since the rising of the dust in the dust storage chamber 26 is reduced, the centrifugal separation is efficiently performed and the excellent dust collection performance can be exhibited.

  Next, when the operation of the vacuum cleaner main body 10 is stopped, the switching valve 45 is switched to an angle at which the second communication portion 42 side is opened more by automatic control before the operation is completely stopped. The suction pressure of the electric blower 12 is applied for several seconds (for example, 3 to 5 seconds).

  At this time, the suction pressure on the first communication portion 32 side, that is, the centrifugal separation portion 23 side is decreased, and the suction pressure on the bottom lid 28 side is increased. Therefore, the compression body 47 integrated with the fine dust storage chamber 27 is moved downward. The dust that has been pulled and accumulated between the compression body 47 and the upper plate 35 of the bottom cover 28 is compressed. Since the dust accumulated in the dust storage chamber 26 is compressed, a space for storing the dust is expanded in the dust storage chamber 26, and a larger amount of dust can be stored. it can.

  Of course, this compression operation may be performed for several seconds when the operation of the cleaner body 10 is started, and the same effect is exhibited even if the user manually operates the switching valve 45 at an arbitrary timing. Further, when the outside air valve 54 is opened with the switching valve 45 being switched to an angle that increases the suction pressure toward the bottom lid 28 side, the propeller fan 51 is rotated by the air sucked from the outside air intake port 50, and at the same time, the vibrating body. 52 continuously vibrates the secondary filter 24.

  At this time, the suction pressure to the first communication portion 32 side is reduced, and outside air is sucked from the outside air intake port 50. Therefore, the suction pressure to the secondary filter 24 is lowered, and the dust collector 11 is sucked from the suction port 31. The air that enters inside also flows to the bottom lid 28 side.

  Therefore, the fine dust adhering to the surface of the secondary filter 24 vibrated by the vibrating body 52 is peeled off, and the filtration performance of the secondary filter 24 can be easily recovered. The operation of the outside air valve 54 may also be performed manually, but it goes without saying that the effect can be obtained with certainty if the switching is performed in conjunction with the switching valve 45 by automatic control.

  Further, when the dust in the dust storage chamber 26 and the fine dust storage chamber 27 is thrown away, the dust collector 11 is taken out of the cleaner body 10 and the bottom cover 28 is opened as shown in FIG. Since the dust is attracted and collected on the bottom cover 28 side, there is little adhesion of the dust to the dust storage chamber 26 side, and the dust can be smoothly dropped without being caught.

  As described above, according to the embodiment of the present invention, it is possible to supply an easy-to-use vacuum cleaner with high dust separation performance, a large amount of accumulated dust, and a simple dust disposal operation.

  The dust collector of the vacuum cleaner according to the present invention has high dust separation performance, a large amount of dust accumulation, and easy dust disposal. Therefore, there is no particular limitation in the field of use and it can be widely used as a vacuum cleaner. .

10 Vacuum Cleaner Body 11 Dust Collector (Dust Collector) for Electric Vacuum Cleaner
12 Electric blower 22 Primary filter 23 Centrifugal separation part (centrifugation means)
24 Secondary filter 25 Dust removal device 26 Dust storage chamber 27 Fine dust storage chamber 28 Bottom cover 32 First communication portion 33 Intake passage 38 Fine dust filter 42 Second communication portion 43 Electric blower connection port 45 Switching valve (switching means)
47 Compressed body

Claims (5)

A centrifuge having a primary filter for separating dust from suction air sucked by an electric blower, a secondary filter for collecting fine dust that could not be collected by the centrifuge, and the centrifuge A dust storage chamber for storing the centrifuged dust, a fine dust storage chamber for storing the fine dust collected by the secondary filter, a bottom lid for opening and closing the dust storage chamber and the fine dust storage chamber, A second communication part that is located downstream of the secondary filter and communicates with the electric blower, and has a second communication part for applying the suction pressure of the electric blower to the bottom cover. Dust collector for deployed vacuum cleaner. The first communication portion and the second communication portion can communicate with an intake passage provided with a switching unit that switches a suction pressure distribution of the electric blower to the first communication portion and the second communication portion. Item 2. A vacuum cleaner dust collector according to Item 1. The dust collector of the vacuum cleaner of Claim 1 or 2 which provided the fine dust filter which isolate | separates dust from suction air in the bottom cover, and connected the said fine dust filter with the 2nd communication part. The dust collector for an electric vacuum cleaner according to any one of claims 1 to 3, wherein a compression body that communicates with the second communication portion and moves in conjunction with the suction pressure of the electric blower is disposed in the dust storage chamber. . The vacuum cleaner which has the vacuum cleaner main body which incorporates the electric blower which generate | occur | produces a suction pressure, and the dust collector of the vacuum cleaner of any one of Claims 1-4.

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