JP4536123B2 - Vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner. More specifically, the present invention relates to a vacuum cleaner that improves the separation effect of dust in a cyclone unit and improves the effect of collecting separated dust in a dust collection unit.

  Conventionally, as shown in FIGS. 11 to 12, a cyclone provided with an electric blower 51 and a cyclone dust collector 52 connected to the intake side 51 a of the electric blower 51, and the cyclone dust collector 52 partitioned by a partition plate 60. A cyclonic vacuum cleaner having a portion 53 and a dust collecting portion 54 has been proposed. In such a cyclone type vacuum cleaner, dust and air are separated by a swirling flow in the cyclone unit, the separated dust is collected in the dust collecting unit 54, and the purified air is collected in the cyclone through the inner cylinder 55. The dust is discharged from the duster 52 to the outside.

Specifically, the air flow in the middle cylinder 55 is such that the air passes through the opening 55 a of the middle cylinder 55, the filter 56, the filter 58, the opening 57 a of the second cyclone middle cylinder 57, and the cylindrical filter 59 in this order. It comes to flow.
Japanese Patent Application No. 2001-38916 (paragraph numbers [0008] to [0009], FIGS. 2 and 4)

  However, in the conventional cyclonic vacuum cleaner, there is substantially no air flow from the cyclone unit 53 to the dust collecting unit 54, so that the dust separated by the cyclone unit 53 is not collected by the dust collecting unit 54. May stick to the filter 56 of the middle cylinder 55. The cyclone unit 53 can sufficiently exert its performance when separating a heavy object such as sand, but it is a garbage with a low specific gravity, especially because it has a poor separation effect on long garbage such as hair. In addition, long and light garbage such as hair winds around the filter 56 of the inner cylinder 55, and further, an umbrella-shaped partition plate 60 that separates the cyclone portion 53 and the dust collection portion 54 from the inner wall of the cyclone dust collector 52. Dust can get clogged in between.

  The present invention has been made to solve such a problem, and provides a vacuum cleaner that improves the separation effect of dust in the cyclone section and improves the effect of collecting the separated garbage in the dust collection section. For the purpose.

An electric vacuum cleaner of the present invention includes an electric blower housed inside a housing of a vacuum cleaner, a cyclone dust collector provided detachably, and a cyclone unit that separates dust formed in the cyclone dust collector from air And a dust collecting portion, an inlet formed at a substantially central portion of the cyclone portion, a primary filter of the inlet arranged in the inlet, and provided in the dust collecting portion and communicated with the electric blower An opening for generating an air flow from the cyclone section to the dust collecting section, a primary filter of the dust collecting section disposed in the opening, and an upstream side of the electric blower, A secondary filter that filters the air that has passed through the primary filter and the air that has passed through the primary filter of the dust collecting unit, and the diameter of the primary filter of the dust collecting unit is set to be the primary filter of the inlet port. characterized by being smaller than the diameter.

  It is preferable to arrange the secondary filter in the cyclone dust collector.

  It is preferable that the cyclone dust collector is arranged horizontally so that the rotational axis of the swirling flow generated inside the cyclone portion extends substantially in the horizontal direction.

  According to the present invention, the primary filter is formed on the bottom surface of the dust collecting portion to generate an air flow from the cyclone portion to the dust collecting portion, thereby improving the dust compression effect in the dust collecting portion and the number of times of waste disposal. Can be reduced.

  In addition, since dust can be prevented from being rolled up from the dust collection unit to the cyclone unit, clogging of a filter or the like can be reduced. For example, the number of times the primary filter is clogged can be suppressed by suppressing the suction from the primary filter or the round hole of the cyclone portion, and the continuous use period of the secondary filter can be extended.

  Next, the vacuum cleaner of the present invention will be described in more detail with reference to the drawings. 1 is a cross-sectional explanatory view showing an embodiment of the vacuum cleaner of the present invention, FIG. 2 is a cross-sectional explanatory view of the cyclone dust collector of FIG. 1, and FIG. 3 is a III-III line of the cyclone dust collector of FIG. 4 is a sectional view taken along line IV-IV of the cyclone dust collector of FIG. 2, FIG. 5 is a sectional explanatory view of the cyclone dust collector in the electric vacuum cleaner according to another embodiment of the present invention, and FIG. FIG. 7 is a cross-sectional view of a cyclone dust collector in a vacuum cleaner according to still another embodiment of the present invention, and FIG. 8 is a cyclone dust collector of FIG. FIG. 9 is a cross-sectional explanatory view of a dust collector without ribs, which is a comparative example of the cyclone dust collector of FIG. 7, and FIG. 10 is an enlarged view of a portion where dust of the dust collector of FIG. It is.

The vacuum cleaner shown by FIGS. 1-4 is from the upper case 1 of the cleaner provided with the handle 3 on the upper surface, and the lower case 2 of the cleaner provided with the front wheel 4 for movement and the rear wheel 5 on the lower surface. The battery 6, the wall standing upright from the lower case 2, the electric fan 7 including the motor and the fan installed via the buffer 8, and the packing 14 are detachably provided. The cyclone dust collector 9 is housed. The cyclone dust collector 9 may be formed integrally with the cleaner body.

  The cyclone dust collector 9 is disposed horizontally so that the rotational axis of the swirling flow generated inside the cyclone portion 9a extends in a substantially horizontal direction. That is, inside the cyclone dust collector 9, the middle cylinder 11 having an umbrella-shaped partition plate 11a is attached in the horizontal direction. The partition plate 11 divides the internal space of the cyclone dust collector 9 into two spaces, a cyclone portion 9a and a dust collection portion 9b that separate dust from air.

  Thus, by arranging the cyclone dust collector 9 horizontally, the intake port 16 and the exhaust port 10a can be arranged substantially linearly, that is, substantially parallel to the rotational axis of the swirling flow. Thereby, since the exhaust port 10a can be directly connected to the intake side 7a of the electric blower 7, the flow path becomes very simple, and the reduction in the air volume and the work rate can be suppressed. In addition, the outer diameter of the vacuum cleaner can be significantly reduced.

  Further, the cyclone dust collector 9 is provided with three filters, that is, primary mesh filters 12 and 18 and a secondary filter 13. A plurality of openings 9c are formed radially on the bottom surface of the cyclone dust collector 9, and a primary mesh filter 18 is disposed in the openings 9c. Thus, the cyclone dust collector 9 communicates with the electric blower 8 through the opening 9c having the primary mesh filter 18, and the flow of air from the cyclone portion 9a to the dust collection portion 9b can be generated.

  The primary mesh filter 12 is disposed in the introduction port 11b at the upper part of the middle cylinder 11, and can filter the air purified in the cyclone portion 9a. The primary mesh filter 12 is not particularly limited in the present invention. For example, a synthetic resin sheet having a large number of openings having a diameter of about 1 mm can be employed. Moreover, a punching metal etc. can also be employ | adopted instead of a synthetic resin sheet. Furthermore, a large number of openings having a diameter of about 1 mm can be formed in the member constituting the upper portion of the middle cylinder 11 and this portion can be used as a primary mesh filter.

  The primary mesh filter 18 provided in the plurality of openings 9c on the bottom surface of the cyclone dust collector 9 is not particularly limited in the present invention. A mesh having a smaller diameter than the primary mesh filter 12, for example, a filter having a mesh size of about 100 to 250 μm is employed. Moreover, it is preferable that the opening ratio of this mesh is about 50 to 70%.

  In the present embodiment, an example in which the primary mesh filter 18 is provided in the opening 9c is shown, but the present invention is not limited to this, and other filters may be used instead of the mesh filter.

  Further, the secondary filter 13 is not particularly limited in the present invention as long as it has a filter function. For example, a filter made of urethane foam, preferably made of Inoac Corporation having a density of about 70 to 90 kg / m 3 is used. A “malt filter (trade name)” or the like can be employed.

  Further, a filter lid 10 is attached to the downstream end of the cyclone dust collector 9 in order to press the periphery of the secondary filter 13. An exhaust port 10 a is opened at the center of the lid 10.

  The cyclone dust collector 9 is configured such that the lid 9d is detached from the body portion 9e at the connecting portion 9f (see FIGS. 1 and 2). The connecting part 9 is not particularly limited in the present invention as long as the lid 9d can be detachably and airtightly connected to the body part 9e. For example, the connecting part 9 can be fitted with a stepped part on the lid and the body part, Or you may form a male screw or a female screw in the lid | cover 9d and the trunk | drum 9e, respectively, and can be screwed together. Further, in order to hold the middle cylinder 11, an annular rib 9g is formed on the inner surface of the lid 9d. Therefore, if the lid 9d is removed from the body portion 9e, the middle cylinder 11 can also be easily removed from the inside of the body portion 9e, and as a result, the dust collected in the dust collection portion 9b can be easily discarded to the outside. .

  In the above embodiment, when the electric blower 7 is activated, air containing dust is sucked into the cyclone dust collector 9 from the floor suction port (not shown) through a hose (not shown) connected to the suction port 15. When passing through the flow path 9h corresponding to a half circumference of the lid 9d in FIGS. 2 to 3 from the mouth 16, it is introduced into the cyclone portion 9a through the opening 9i, and then along the inner peripheral wall of the cyclone dust collector 9. The dust is separated from the air by the umbrella-shaped partition plate 11a of the middle cylinder 11, and is collected in the dust collecting portion 9b.

  On the other hand, the air purified by the swirling flow passes through the primary mesh filter 12 and is further purified, and then passes through the inner cylinder 11 to the secondary filter 13.

  Moreover, since the air that has entered the dust collecting portion 9b together with the dust compresses the dust inside the dust collecting portion 9b when passing through the primary mesh filter 18, the dust compression effect compared with the conventional cyclone cleaner. Can be improved. The air purified through the primary mesh filter 18 reaches the secondary filter 13.

  After that, the air passing through the inside and outside of the middle cylinder 11 is filtered by the secondary filter 13, then passes through the electric blower 7 and is exhausted to the outside through a concentrated exhaust port (not shown).

  Furthermore, in this Embodiment, as shown in FIGS. 1-2, the umbrella-shaped partition plate 11a which separates the cyclone part 9a and the dust collection part 9b inside the cyclone dust collector 9 is formed so that a cone shape may be exhibited. Has been. As a result, it is difficult to generate a puddle that is not affected by the swirling flow on the partition plate 11a, and even long dust such as light specific gravity or hair is smoothly deposited on the partition plate 11a without being deposited on the partition plate 11a. It becomes easy to flow and a sufficient centrifugal effect is obtained for a long time. In addition, since the centrifugal separation effect is high, the primary mesh filter 12 and the secondary filter 18 through which the purified air passes are not easily clogged, maintenance is easy, and the interval between filter replacement or cleaning is increased. Can do.

  If the inclination angle θ (see FIG. 2) of the umbrella-shaped partition plate 11a is set to be 15 degrees or more, preferably 20 degrees or more, effects such as a centrifugal separation effect can be ensured.

  Moreover, as other embodiment of this invention, as FIG. 5-6 shows, the area from the opening 9i into which the swirl | vortex flow is introduce | transduced into the inside of the cyclone part 9a of the cyclone dust collector 9 to the partition plate 11a A spiral rib 21 is provided. The spiral rib 21 can provide an effect of rectifying the wind by eliminating the turbulence of the wind in the cyclone portion 9a, so that dust can smoothly flow into the dust collecting portion 9b.

  Moreover, even if the dust in the dust collecting part 9b tries to roll up toward the cyclone part 9a, the dust can be pushed back to the dust collecting part 9b by the strong wind flowing along the spiral rib 21.

  Due to the effect of the spiral rib 21 as described above, invasion of dust into the primary mesh filter 12 can be suppressed. Therefore, the continuous use period of the secondary filter 13 can be extended, and the number of maintenance can be reduced.

  Also, when the main body of the vacuum cleaner falls while the vacuum cleaner is in use, the power of the rechargeable battery for the electric blower goes down, or immediately after the vacuum cleaner is turned ON / OFF, even when the air volume is low, the spiral rib 21 can sufficiently obtain the centrifugal separation effect of the cyclone in the cyclone portion 9a, and the fine dust collected in the dust collection portion 9b rises and clogs the first mesh filter 12 or passes through the first mesh filter 12. Problems such as fine dust clogging the secondary filter 13 are eliminated.

  Further, as still another embodiment of the present invention, as shown in FIGS. 7 to 8, a spiral shape that partitions the cyclone portion 9 a and the dust collection portion 9 b of the cyclone dust collector 9 on the outer peripheral surface of the middle cylinder 11. A partition plate 25 is provided, and a passage 26 is formed in a part of the partition plate 25 to guide the dust separated by the cyclone portion 9a to the dust collection portion 9b. Further, dust is collected from the edge 27 of the passage 26 on the cyclone portion 9a side. A rib 28 is extended toward the portion 9b. Since the air flowing along the spiral partition plate 25 is smoothly guided to the dust collecting portion 9b along the rib 28 by the rib 28, the rib 28 which is a comparative example of the present invention of FIGS. As in the case of the cyclone dust collector, the dust D is not entangled with the edge 27 on the cyclone portion 9a side.

It is a section explanatory view showing one embodiment of a vacuum cleaner of the present invention. It is a cross-sectional explanatory drawing of the cyclone dust collector of FIG. It is the III-III sectional view taken on the line of the cyclone dust collector of FIG. It is the IV-IV sectional view taken on the line of the cyclone dust collector of FIG. It is sectional explanatory drawing of the cyclone dust collector in the vacuum cleaner of other embodiment of this invention. It is VI-VI sectional view taken on the line of the cyclone dust collector of FIG. It is sectional explanatory drawing of the cyclone dust collector in the vacuum cleaner of other embodiment of this invention. It is an arrow A view of the cyclone dust collector of FIG. It is a cross-sectional explanatory drawing of the dust collector without a rib which is a comparative example of the cyclone dust collector of FIG. It is an enlarged view of the part where the dust of the dust collector of FIG. 9 became entangled. It is sectional drawing of the conventional vacuum cleaner. It is an expanded sectional view of the cyclone dust collector of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 7 Electric blower 9 Cyclone dust collector 9a Cyclone part 9b Dust collector part 9c Opening

Claims (3)

An electric blower housed inside a housing of a vacuum cleaner, a cyclone dust collector provided detachably, a cyclone unit and a dust collector for separating dust formed in the cyclone dust collector from air, and the cyclone An inlet formed at a substantially central part of the part, a primary filter of the inlet arranged at the inlet, the dust collecting part, and communicated with the electric blower from the cyclone part to the dust collecting part An opening for generating an air flow to the opening, a primary filter of a dust collecting portion disposed in the opening, an air disposed upstream of the electric blower and having passed through the primary filter of the introduction port; A secondary filter that filters the air that has passed through the primary filter of the dust collection unit,
A vacuum cleaner characterized in that the diameter of the primary filter of the dust collecting portion is smaller than the diameter of the primary filter of the inlet .   The vacuum cleaner according to claim 1, wherein the secondary filter is disposed in the cyclone dust collector.   The electric vacuum cleaner according to claim 1 or 2, wherein the cyclone dust collector is arranged horizontally such that a rotation axis of a swirling flow generated inside the cyclone portion extends in a substantially horizontal direction.

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