JP2007252577A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner having a cyclone dust collector capable of collecting fine dust which is difficult to separate by centrifugal force while preventing an increase in the size of a vacuum cleaner body. <P>SOLUTION: The vacuum cleaner has a suction port body 3 having a suction port, an electric blower 4 for generating suction air, a suction air passage communicating with the suction port body and the electric blower, and the cyclone dust collector 5 arranged in the suction air passage so as to separate dust by revolving sucked air. The cyclone dust collector has an electric dust collecting function. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention generally relates to a vacuum cleaner, and more particularly to a vacuum cleaner equipped with a cyclone dust collector.

  Conventionally, in a vacuum cleaner provided with a cyclone dust collector, dust is swirled at high speed in a dust cup container and separated by centrifugal force. At this time, dust containing fine dust is allowed to flow into the dust cup container from the tangential direction of the dust cup container, and large dust is separated by centrifugal force. It is difficult to separate with. Therefore, in order to separate fine dust by filtration, a mesh filter is provided in the inner cylinder of the cyclone dust collector.

In order to reduce the amount of fine dust discharged from the vacuum cleaner body, Japanese Patent Laid-Open No. 4-341228 (Patent Document 1) does not include a cyclone dust collector, but is provided downstream of the electric blower. In addition, an electric vacuum cleaner having an electric dust collector that electrically collects fine dust and dust is described.
JP-A-4-341228

  However, in the vacuum cleaner equipped with the above conventional cyclone dust collector, fine dust having a mesh filter hole diameter (about 50 μm) or less provided in the inner cylinder passes through the mesh filter hole, and the vacuum cleaner body There was a problem of being discharged out of the machine.

  In order to solve this problem, a vacuum cleaner provided with an electric dust collector as a means for collecting fine dust has been proposed. However, normally, an electrostatic precipitator can capture fine dust in an air flow having a flow rate of about 0.5 to 1.0 m / sec, and the flow rate of intake air is high (10 to 20 m) like a vacuum cleaner. / Sec), there is a problem that fine dust charged by the electrostatic precipitator escapes from the electrostatic precipitator before electrostatically attracting to the capture electrode. In order to solve this problem, since the capture electrode has to be lengthened, there is a problem that the main body of the vacuum cleaner becomes large and consequently becomes heavy.

  Therefore, an object of the present invention is to provide an electric vacuum cleaner equipped with a cyclone dust collector that can collect fine dust that is difficult to separate by centrifugal force without increasing the size of the vacuum cleaner body. Is to provide.

  An electric vacuum cleaner according to the present invention is disposed in an intake passage that is disposed in an intake passage having an intake opening, an electric blower that generates intake air, an intake passage that communicates between the intake opening and the electric blower, and an intake passage. A cyclone dust collecting device for rotating the intake air to separate the dust, and the cyclone dust collecting device has an electric dust collecting function.

  In the vacuum cleaner of the present invention, since the cyclone dust collecting device itself has an electric dust collecting function, it can have both a centrifugal separation function and an electric dust collecting function, and does not increase the size of the vacuum cleaner main body. It is possible to collect.

  In the electric vacuum cleaner of this invention, it is preferable that a cyclone dust collector contains an inner cylinder filter and an electric dust collector is arrange | positioned at the inner cylinder filter.

  By arranging the electrostatic precipitator on the inner cylinder filter in the cyclone precipitator in this way, the cyclone precipitator itself has both a centrifugal separation function and an electrostatic precipitating function without increasing the size of the cleaner body. It is possible to configure so that fine dust can be collected.

  Moreover, in the vacuum cleaner of this invention, it is preferable that the electret filter which consists of electret fiber is arrange | positioned downstream of the inner cylinder filter.

  By disposing the electret filter made of electret fibers on the downstream side of the inner cylinder filter in this way, fine dust charged by the ion shower generated in the electric dust collector of the inner cylinder filter can be Even if it passes through the trapping electrode of the dust collector, it is electrostatically adsorbed by the Coulomb force generated between it and the permanent charge embedded in the electric fiber when it physically collides with the electret fiber. For this reason, since the capture electrode of the electric dust collector can be shortened, it is possible to collect fine dust without increasing the size of the cleaner body.

  Furthermore, in the electric vacuum cleaner of this invention, it is preferable that an electric dust collector contains the one and the other electrode which oppose, and the one and the other electrode are hold | maintained with the flame-retardant material.

  Thus, by constituting the material for holding the electrode of the electrostatic precipitator with a flame retardant material, it is possible to prevent insulation deterioration of the electrode holding member due to a high voltage.

  In the vacuum cleaner of this invention, it is preferable that the electrostatic precipitator includes one electrode and the other electrode facing each other, and one electrode is made of a net filter made of a conductive material.

  By doing in this way, the ion shower by corona discharge can be raised between the net filter which comprises the inner cylinder filter of a cyclone dust collector, and the other electrode of an electrostatic dust collector.

  In the electric vacuum cleaner of the present invention, the electric dust collector includes a discharge electrode disposed at a substantially central portion of the inner cylinder filter, and a net filter made of a conductive material disposed at an outer peripheral portion of the inner cylinder filter. Is preferred.

  By doing in this way, the ion shower by a corona discharge can be raise | generated between the net filter which comprises the inner cylinder filter of a cyclone dust collector, and the discharge electrode of an electrostatic dust collector.

  As described above, according to the present invention, the cyclone dust collector can have a centrifugal separation function and an electric dust collection function, and can collect fine dust without increasing the size of the vacuum cleaner body. Become.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a schematic overall configuration of a vacuum cleaner as one embodiment of the present invention.

  As shown in FIG. 1, the electric vacuum cleaner of the present invention includes a cleaner body 1, an extension pipe 2 a, a connection hose 2 b, and a suction port body 3. The extension pipe 2 a and the connection hose 2 b constitute a supply path (intake passage) for supplying the air sucked from the suction port body 3 to the cleaner body 1. The suction port body 3 sucks air through an air suction port (not shown) by the operation of the electric blower 4 described later.

  The vacuum cleaner body 1 includes an electric blower 4 and a cyclone dust collector 5. The electric blower 4 sucks air through the suction port body 3, the extension pipe 2 a, the connection hose 2 b, and the cyclone dust collector 5. The cyclone dust collecting device 5 has an electric dust collecting function for swirling the air sucked by the electric blower 4, centrifuging the dust contained in the air, and collecting the dust by charging the dust. The main body 1 is detachably provided.

  FIG. 2 is a cross-sectional view showing a schematic configuration of a main part of the cyclone dust collecting device 5 of the vacuum cleaner shown in FIG.

  As shown in FIG. 2, the cyclone dust collecting device 5 includes a cyclone dust collecting chamber 5a that swirls air sucked by the electric blower 4, a dust cup 5b as a dust collecting container, and an electric dust collecting device. And a cylindrical filter 5c. The dust cup 5b accumulates dust separated from air in the cyclone dust collection chamber 5a. The inner cylinder filter 5c constitutes an electric dust collector for taking an ion shower on the air containing fine dust after the dust is centrifuged. Further, in this embodiment, the inner cylinder filter 5c has a discharge electrode 5e at a substantially central portion and a capture electrode composed of a net filter 5f made of a conductive material at the outer peripheral portion. An electret filter (also referred to as an electrostatic filter) 6 made of electret fibers is disposed on the downstream side of the inner cylinder filter 5c.

  In the electric vacuum cleaner of the present invention having the cyclone dust collecting device 5 as shown in FIG. 1, when the electric blower 4 housed in the cleaner main body 1 (FIG. 1) is driven, the air suction of the suction port body 3 Air is sucked from the mouth, and dust is sent to the cyclone dust collector 5 through the extension pipe 2a and the connecting hose 2b as shown by an arrow 50a as shown in FIG.

  As shown in FIG. 2, in the cyclone dust collecting device 5, the dust contained in the air is centrifuged as indicated by the arrow 50b in the cyclone dust collecting chamber 5a, and the dust cup 5b serving as a dust collecting container has an arrow. Integrated as shown at 50c. In the cyclone dust collecting device 5, dust having a large mass contained in the air is centrifuged in the cyclone dust collecting chamber 5a and collected in the dust cup 5b.

  On the other hand, the air from which the dust has been removed is then filtered through the inner cylinder filter 5 c of the cyclone dust collector 5 as indicated by an arrow P, and further becomes air containing fine dust through the electret filter 6.

  FIG. 3 is a diagram schematically showing a configuration and a charging mechanism of an electric dust collector incorporated in the cyclone dust collector shown in FIG.

  In the embodiment of the present invention, as shown in FIG. 3, when the air containing fine dust after removing large dust passes through the net filter 5 f of the inner cylinder filter 5 c of the cyclone dust collector 5, the fine dust is The ion shower 8 is charged when a high voltage is applied from the high-voltage power source 7 between the discharge electrode 5e and the net filter 5f serving as a capture electrode. The fine dust 9 charged to a positive potential flows into the electret filter 6 composed of the electret fibers arranged on the downstream side of the inner cylinder filter 5c, and is collected by colliding and embedded in the electret fibers. Is electrostatically adsorbed by the Coulomb force between the generated permanent charges.

  Thus, by providing an electric dust collector in the inner cylinder filter 5c in the cyclone dust collector 5, the cyclone dust collector 5 can have both a centrifugal separation function and an electric dust collection function. It is possible to collect fine dust without being converted.

  Moreover, the net filter 5f as a capture electrode of an electric dust collector becomes long by making the electret filter 6 arrange | positioned downstream of the inner cylinder filter 5c act also as a capture electrode in the conventional electrostatic dust collector. Can be avoided. That is, using the thickness of the electret filter 6 knitted with the electret fibers, as shown by the arrow P in FIG. 3, when the fine dust flows into the electret filter 6 and physically collides with the electret fibers, Fine dust can be electrostatically adsorbed by the Coulomb force generated between the permanent charges embedded in the electret fibers, and as a result, the length of the net filter 5f as the capture electrode can be shortened.

  Further, in order to cause corona discharge, a discharge electrode 5e is arranged in a columnar shape at the substantially central portion of the inner cylinder filter 5c, and a net formed of a conductive material around the discharge electrode 5e on the outer periphery of the inner cylinder filter 5c. By disposing the filter 5f as a capture electrode, it becomes possible to cause an ion shower 8 by corona discharge between the discharge electrode and the net filter 5f.

  In the inner cylinder filter 5c, as shown in FIGS. 2 and 3, the framework of the members that hold the discharge electrode 5e and the net filter 5f as one and the other electrodes constituting the electrostatic precipitator is flame retardant. It is made of material 10. For this reason, even if a high voltage for generating corona discharge is applied between the discharge electrode 5e and the net filter 5f from the high-voltage power supply 7, insulation deterioration does not occur in the flame-retardant material 10 forming the framework, The discharge electrode 5e and the net filter 5f can be safely held. That is, it is possible to prevent insulation deterioration due to high voltage by configuring the material of the electrode holding member constituting the electrostatic precipitator disposed in the inner cylinder filter 5c with a flame retardant material.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

It is a perspective view showing the schematic whole structure of a vacuum cleaner as one embodiment of the present invention. It is sectional drawing which shows the structure of the outline of the principal part of the cyclone dust collector of the vacuum cleaner shown by FIG. It is a figure which shows typically the structure and charging mechanism of an electric dust collector incorporated in the cyclone dust collector shown by FIG.

Explanation of symbols

1: vacuum cleaner body, 2a: extension pipe, 2b: connection hose, 3: suction port, 4: electric blower, 5: cyclone dust collector, 5c: inner cylinder filter, 5e: discharge electrode, 5f: net filter, 6: Electret filter.

Claims (6)

A suction port body having an intake port;
An electric blower that generates intake air;
An intake passage communicating between the suction port body and the electric blower;
A cyclone dust collecting device disposed in the intake passage and configured to separate dust by turning the inflowing intake air;
The cyclone dust collector is an electric vacuum cleaner having an electric dust collection function.   The vacuum cleaner according to claim 1, wherein the cyclone dust collector includes an inner cylinder filter, and an electric dust collector is disposed on the inner cylinder filter.   The vacuum cleaner of Claim 2 with which the electret filter which consists of electret fibers is arrange | positioned downstream of the said inner cylinder filter.   The vacuum cleaner according to claim 2 or 3, wherein the electric dust collector includes one and the other electrodes facing each other, and the one and the other electrodes are held by a flame retardant material.   The vacuum cleaner according to claim 2 or 3, wherein the electrostatic precipitator includes one and the other electrodes facing each other, and the one electrode includes a net filter made of a conductive material. The said electrostatic dust collector contains the discharge electrode arrange | positioned in the approximate center part of the said inner cylinder filter, and the net filter of the electroconductive material arrange | positioned in the outer peripheral part of the said inner cylinder filter. The electric vacuum cleaner according to 3.

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