JP5397450B2 - Cyclone dust collector and electric vacuum cleaner provided with the same - Google Patents

Description

  The present invention relates to a vacuum cleaner, and more particularly to a dust collector of a cyclonic vacuum cleaner.

  In recent years, dust collectors for cyclone vacuum cleaners use centrifugal force to separate and separate dust mixed in the air by swirling the air sucked together with dust from the suction tool in the cylindrical dust collector. Dust is collected in a dust collection chamber below the cylindrical dust collection unit, and the air from which the dust has been separated is sucked into the suction side by the electric blower. However, since a phenomenon occurs in which dust collected in the dust collection chamber returns to the suction side, a step is provided by changing the diameters of the cyclone chamber and the dust collection chamber to suppress the return (for example, Patent Document 1). reference).

JP 2000-135184 A

  However, the above configuration alone is still insufficient to suppress the return from the dust collecting chamber, and it is necessary to further enhance the dust collecting effect. Therefore, the present invention has been made to solve such a problem, and dust collected by the cyclone dust collector can be reduced to the suction side as much as possible, and the dust collection effect is markedly improved. It is an object of the present invention to provide a dust collector or a vacuum cleaner that can be increased.

In order to solve the conventional problem, the cyclone type dust collector of the present invention is:
A substantially cylindrical primary filter is disposed concentrically in a substantially cylindrical dust box body having an airflow inlet on a side surface, and a cyclone space is formed between the inner surface of the dust box body and the outer peripheral surface of the primary filter. Forming,
Under the cyclone space, a substantially cylindrical dust accumulation space having a diameter larger than the outer diameter of the cyclone space is provided,
An umbrella-like extension part extending from the lower part of the primary filter toward the dust accumulation space is provided, and an inclined part that extends in accordance with the shape of the extension part is provided in the dust box body, and the extension A dust collecting passage is formed by the outer peripheral surface of the protruding portion and the inner peripheral surface of the inclined portion,
The passage of the cyclone space is wider in the radial direction than the dust collection passage.

  As a result, it is possible to further prevent the force that is pressed from the cyclone space toward the dust accumulation space and the dust accumulated in the dust accumulation space from returning to the cyclone space range.

  According to the cyclone type dust collector of the present invention, the dust collection effect can be enhanced by preventing the dust accumulated in the dust accumulation space from returning to the cyclone space, and the dust collector itself should be compact. Can do.

Whole perspective view of the vacuum cleaner provided with the dust collector in Embodiment 1 of this invention Perspective view from the front of the dust collector Perspective view from the rear of the dust collector The perspective view which shows the internal structure of the dust collector BB sectional view in FIG. AA sectional view in FIG.

  1st invention arrange | positions a substantially cylindrical primary filter concentrically in a substantially cylindrical dust box main body, and forms a cyclone space between the dust box main body inner surface and the outer peripheral surface of the primary filter, A substantially cylindrical dust accumulation space having a diameter larger than the outer diameter of the cyclone space is provided below the cyclone space, and an umbrella-shaped extension extending from the lower part of the primary filter toward the dust accumulation space. Providing a protruding portion, and providing the dust box main body with an inclined portion that expands in accordance with the shape of the extending portion, and forming a dust collecting passage between the extending portion outer peripheral surface and the inclined portion inner peripheral surface; The passage of the cyclone space is wider in the radial direction than the dust collection passage. Thereby, it is possible to further prevent the dust accumulated in the dust accumulation space from returning to the cyclone space.

  The second invention is characterized in that the outer peripheral surface of the extending part forming the dust collecting passage and the inner peripheral surface of the dust box body are substantially parallel to each other. Thereby, disturbance of the swirl flow can be reduced, dust can be prevented from returning to the cyclone space, and clogging of dust into the dust collecting passage can be suppressed.

  The third invention is characterized in that the dust collecting passage is narrowed toward the dust accumulation space. As a result, the force of pressing from the cyclone space toward the dust accumulation space becomes stronger, and an effect of further suppressing the return of dust from the dust accumulation space can be obtained.

  According to a fourth aspect of the present invention, the end of the extending portion has a flange shape extending perpendicularly to the dust accumulation space. As a result, the dust in the dust accumulation space is compressed inside the extending portion, and the dust collection capability can be enhanced.

  The fifth invention is characterized in that at least a part of the dust box body and the extending portion is transparent. Thereby, since the dust collected in the range enclosed by the dust storage space and the extension part can be confirmed from the outside, it is easy for the user to determine the timing of throwing away the garbage.

  The sixth aspect of the present invention is an electric vacuum cleaner provided with these dust collecting devices, and can provide an easy-to-use electric vacuum cleaner.

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

(Embodiment 1)
The vacuum cleaner using the dust collector in the 1st Embodiment of this invention is demonstrated using FIGS. 1 is an overall perspective view of a vacuum cleaner provided with a dust collector in Embodiment 1 of the present invention, FIG. 2 is a perspective view of the dust collector, FIG. 3 is a rear perspective view of the dust collector, and FIG. 4 is a perspective view showing an internal configuration of the dust collecting apparatus, FIG. 5 is a cross-sectional view taken along line BB in FIG. 3, and FIG. 6 is a cross-sectional view taken along line AA in FIG.

The vacuum cleaner using the dust collector in the present embodiment is provided at the vacuum cleaner body 1, the hose 2 connected to the suction port 1 a provided in front of the vacuum cleaner body 1, and the tip of the hose 2. The vacuum cleaner main body 1 includes a connection pipe 3, an extension pipe 4 connected to the connection pipe 3, and a suction tool 5 provided at the tip of the extension pipe 4 that sucks dust (not shown). An electric blower 6 for sucking dust and a dust collector 7 for collecting dust are incorporated.

  As shown in FIG. 2, when the dust collector 7 is roughly divided into components, the outer shell includes a dust box body 8, a cover 11 configured to close the upper surface of the dust box body 8, and a handle 10 provided on the cover 11. And a lid 9 provided so as to close the lower surface of the dust box main body 8.

  The lid 9 can be rotated by a hinge portion 13 provided in the dust box body 8 and is locked to the dust box body 8 by a buckle 18. Further, the dust box body 8 is airtight (maintained airtight) by a packing D29 attached to the lid 9. As shown in FIG. 6, the lid 9 is configured to be unlocked and opened by the rotation of the buckle 18. When the push lever 12 is pressed, the slider 47 is lowered to open the buckle 18. Is released. The cover 11 is engaged with the dust box body by a buckle 15 and a claw portion 14.

  As shown in FIG. 5, a primary filter 21 is provided in the dust box main body 8 in a substantially concentric manner, and an umbrella-shaped extending portion 22 is provided below the primary filter 21 by means such as fitting or welding. Is attached to the primary filter mounting frame 57.

  A secondary filter 23 formed in a pleat shape is provided above the primary filter 21, and further above the dust filter 24 for removing dust accumulated in the secondary filter 23 by means such as vibration, A motor unit 25 serving as means for applying vibration to the unit 24 is provided.

  The primary filter 21 is made of a metal material, and the metal surface portion is not provided with a concave-convex shape made of resin or the like, so that the swirl flow flows smoothly, improving the separation efficiency and reducing dust and the like. Demonstrate the effect of reducing wrapping. The effect can be enhanced by subjecting the surface of the primary filter 21 to polishing, and the primary filter 21 can be kept clean by applying antibacterial treatment.

  The dust-mixed air sucked from the suction tool 5 is sucked into the suction port B17 provided in the dust box body 8 shown in FIG. 3 via the suction port 1a provided in front of the cleaner body 1. The air sucked into the air inlet B17 flows into the cyclone space 31 formed by the outer periphery of the primary filter 21 and the dust box body 8, and air containing dust and fine dust mainly composed of cotton dust by the swirl flow generated there. Centrifuge. Dust, mainly cotton dust, is accumulated in the dust accumulation space 52 through the dust collection passage 32 formed between the extending portion 22 and the dust box body 8.

  Here, the width L1 of the cyclone space 31 is larger than the width L2 of the dust collecting passage 32. The inner diameter R4 of the dust accumulation space 52 is larger than the outer diameter R3 of the cyclone space, and the dust box body 8 has an inclined portion 53 that expands in accordance with the shape of the extending portion 22. With this configuration, a pressing force is generated from the cyclone space 31 toward the dust accumulation space 52, and the dust accumulated in the dust accumulation space 52 is prevented from rising to the cyclone space.

  Further, since the extended portion 22 and the inclined portion 53 of the dust box main body 8 are configured such that a ceiling wall is formed vertically upward when viewed from the lid 9 side, cotton dust accumulated in the dust accumulation space 52 is removed. The main dust is less likely to return to the cyclone space 31 and the dust collection efficiency can be increased.

  The inclined surface 58 of the extending portion 22 and the inclined portion 53 of the dust box main body 8 are substantially parallel to reduce the disturbance of the swirling flow, prevent the dust accumulation space 52 from returning to the cyclone space 31, and collect dust. It is possible to prevent the dust passage 32 from being clogged.

  Note that if the width L2 of the dust collection passage 32 is gradually reduced toward the dust accumulation space 52, the pressing force toward the dust accumulation space 52 increases, and the dust in the dust accumulation space 52 enters the cyclone space 31. It is possible to further suppress the return.

  The outer diameter R3 of the cyclone space 31 is larger than the maximum outer diameter R2 of the extending portion 22. Thereby, even if the primary filter 21 and the extending part 22 are configured as one part, the dust box main body 8 can be inserted and removed from above, so that the assemblability is excellent.

  Further, at least a part of the dust box main body 8 and the extension part 22 is made of a transparent material, and the amount of dust accumulated in the dust storage space 52 and the umbrella-like interior of the extension part 22 can be confirmed. It is easy to judge when to throw away garbage.

  In the present embodiment, the extending portion 22 includes a flange 59 extending in the vertical direction from the lower end of the slope 58. As a result, the dust in the dust accumulation space 52 is compressed and prevented from returning to the cyclone space 31, and the dust collection performance can be improved.

  By the way, the air separated into fine dust in the cyclone space 31 passes through the primary filter 21, and the fine dust is filtered by the secondary filter 23. Only air that does not contain fine dust passes through the secondary filter 23, passes through the air inlet A <b> 16, and is sucked into the electric blower 6.

  The fine dust accumulated on the secondary filter 23 is vibrated by the motor unit 25 to the dust removing unit 24 provided above the secondary filter 23 when the operation of the electric blower 6 is stopped. Peel from 23. The peeled fine dust passes through the space inside the primary filter mounting frame 57, and accumulates in the inner cylinder 33 provided below the primary filter 21 and inside the extending portion 22.

  The upper part of the inner cylinder 33 has an inclined shape so that the peeled fine dust can be easily guided to the lower part of the inner cylinder 33. A return 55 is provided inside the inner cylinder 33, and even if the dust collector 7 is turned upside down, the fine dust accumulated in the inner cylinder 33 returns to the secondary filter 23 side again, Prevents adhesion. The inner cylinder 33 communicates with the primary filter 21, and the opened lower end is separated from the dust accumulation space 52 by a packing E <b> 30 provided on the lid 9.

  The diameter above the primary filter 21 of the primary filter mounting frame 57 is larger than the outer diameter R1 of the primary filter and larger than the inner diameter R3 of the outer wall 54 of the dust box body 8 forming the cyclone space 31. The primary filter mounting frame 57 is inserted from above the dust box body 8 and is held in pressure contact with the holding rib 56 by the packing B27.

  The secondary filter 23 is provided above the primary filter 21, and a packing A 26 and a packing B 27 are attached to the outer periphery of the secondary filter 23, respectively. Playing a role. The outer diameter of the secondary filter 23 is larger than the outer diameter R1 of the primary filter 21, and the air flow resistance is reduced as much as possible. Accordingly, the outer diameter of the upper portion of the dust box body 8 is larger than the diameter R4 of the outer wall 54 of the cyclone space. That is, the dust box body 8 has a constricted shape as a whole.

Next, dust removal of the secondary filter 23 will be described. As shown in FIGS.
4 is configured by connecting the dust removing plate 44 and the rail 41 by a connecting means such as a screw by a shaft portion 43. In the motor unit 25, a crankshaft 37 attached to the rotating shaft of the motor 40 is connected to a linear vibrator 39 via a connecting rod 38, and these are surrounded by a motor cover 35 and a motor case 36. Are attached by connecting means such as screws.

  The motor 40 is connected to the electric base 49 attached to the case body 46, and the capacitor 48 disposed on the electric base 49 is charged via the terminal 19 by the charging means provided on the vacuum cleaner main body 1 side. 34, the current accumulated in the capacitor 48 is discharged to rotate the motor 40, and the linear vibrator 39 vibrates. The linear vibrator 39 is connected to the rail 41, and transmits fine vibrations accumulated in the secondary filter 23 by transmitting vibrations (vibration in the horizontal direction as indicated by arrows in FIG. 5) to the dust removing plate 44. Can be peeled off.

  The case body 46 is connected to the cover 11 by connecting means such as an inner wall 45 and a screw, and is held by sandwiching the rail 41 between the case body 46 and the rail holding portion 42 provided on the inner wall 45.

  In the above embodiment, the dust box body 8 and the extending portion 22 have been described as being cylindrical. However, as shown in FIG. 6, a portion of the cylindrical shape is not formed due to the relationship with other parts. However, the points of action and effect are the same.

  As described above, the dust collector according to the present invention can prevent dust accumulated in the dust accumulation space from returning to the cyclone space in the dust collector that collects dust based on the principle of cyclonic separation. It can be applied to household and commercial vacuum cleaners.

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner body 6 Electric blower 7 Dust collector 8 Dust box body 9 Lid 21 Primary filter 22 Extension part 23 Secondary filter 24 Dust removal part 31 Cyclone space 32 Dust collection passage 33 Inner cylinder 52 Dust accumulation space 53 Inclination part 55 Return 57 Primary filter mounting frame 58 Slope 59 Flange

Claims (6)

In the substantially cylindrical dust box body, a substantially cylindrical primary filter is disposed concentrically to form a cyclone space between the inner surface of the dust box body and the outer peripheral surface of the primary filter,
Under the cyclone space, a substantially cylindrical dust accumulation space having a diameter larger than the outer diameter of the cyclone space is provided,
An umbrella-like extension part extending from the lower part of the primary filter toward the dust accumulation space is provided, and an inclined part that extends in accordance with the shape of the extension part is provided in the dust box body, and the extension A dust collecting passage is formed by the outer peripheral surface of the protruding portion and the inner peripheral surface of the inclined portion,
A cyclone type dust collector in which the passage of the cyclone space is wider in the radial direction than the dust collection passage. The cyclone type dust collecting device according to claim 1, wherein the outer peripheral surface of the extending portion forming the dust collecting passage and the inner peripheral surface of the dust box body are parallel to each other. The cyclone type dust collecting device according to claim 1, wherein the dust collecting passage is narrowed toward the dust accumulation space. The cyclone type dust collector according to any one of claims 1 to 3, wherein an end of the extending portion has a flange shape extending perpendicularly to the dust accumulation space. The cyclone type dust collector according to any one of claims 1 to 4, wherein at least a part of the dust box main body and the extending portion is transparent. The vacuum cleaner provided with the cyclone type dust collector of any one of Claims 1-5.