JP2013031598A - Dust collecting device and vacuum cleaner using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of a conventional cyclone dust collecting device that dust collection performance is degraded by the dust accumulated in a dust collecting chamber returns to a first filter side.SOLUTION: The substantially cylindrical first filter 21 is concentrically arranged in a substantially cylindrical dust box body 8 and a cyclone space 31 is formed between an inner surface of the dust box body 8 and the outer peripheral surface of the first filter 21. A dust accumulation space 52 is provided under the cyclone space 31 and in the lower part of the first filter 21, an umbrella-shaped extension part 22 extending toward the dust accumulation space 52. Further, the lower end part of a substantially cylindrical wall 60 is provided by projecting to be longer than the lower end part of the umbrella-shaped extension part 22 inside the umbrella-shaped extension part 22 and thereby, dust collection effect is increased by preventing the dust accumulated in the dust accumulation space 52 from returning again to the cyclone space.

Description

  The present invention relates to a dust collector, and more particularly to a dust collector of a 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. In addition, there is a problem that pet hair such as dogs and cats and human hair contained in the dust returns to the cyclone space and wraps around the primary filter.

  Therefore, the present invention has been made to solve such a problem, and it is possible to reduce the amount of dust collected by the cyclone dust collector to be sucked into the suction side as much as possible, and the dog contained in the dust. An object of the present invention is to provide a dust collector or a vacuum cleaner that can prevent pet hair such as cats and human hair and human hair from wrapping around a primary filter and greatly enhance the dust collection effect.

  A substantially cylindrical primary filter is concentrically disposed in a substantially cylindrical dust box body, and a cyclone space is formed between the inner surface of the dust box body and the outer peripheral surface of the primary filter, and below the cyclone space. Is provided with a substantially cylindrical dust accumulation space, an umbrella-shaped extension portion extending toward the dust accumulation space is provided at a lower portion of the primary filter, and a substantially cylindrical shape is provided inside the umbrella-shaped extension portion. A substantially cylindrical wall provided on the inner side of the umbrella-like extension portion by forming a lower end portion of the substantially cylindrical wall longer than the lower end portion of the umbrella-like extension portion. The internal dust storage space is further formed inside the wall, and the dust is first held and stored in the internal dust storage space.

  Next, it is possible to further prevent the dust accumulated in the dust accumulation space from returning to the cyclone space range by holding and accumulating the dust in the outer dust accumulation space after the internal dust accumulation space is full. .

Further, by forming the lower end portion of the substantially cylindrical wall formed inside the umbrella-like extension portion so as to protrude longer than the lower end portion of the umbrella-like extension portion, dust is firstly stored in the inner internal dust accumulation space. Then, after the internal dust storage space is full, dust is held and stored in the outer external dust storage space. At this time, the lower end of the substantially cylindrical wall is extended in an umbrella shape. Since the dust accumulated in the internal dust accumulation space is projected longer than the lower end of the protrusion, accumulation in the external dust accumulation space starts from the state where it is pushed down far away from the cyclone space. Prevents dust accumulated in the dust accumulation space from passing through the external dust accumulation space and exiting to the cyclone space, and is securely held and accumulated in the external dust accumulation space next to the internal dust accumulation space, and returns to the cyclone space range. such as DOO can be further prevented more a.

  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 The perspective view from the diagonal front of the dust collector Same perspective view of dust collector The perspective view which shows the internal structure of a dust collector BB sectional view in FIG. AA sectional view in FIG. CC 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 is provided below the cyclone space, an umbrella-like extension portion extending toward the dust accumulation space is provided below the primary filter, and the umbrella-like extension is further provided. By providing a substantially cylindrical wall on the inside of the portion and forming the lower end portion of the substantially cylindrical wall longer than the lower end portion of the umbrella-shaped extension portion, the umbrella-shaped extension portion An internal dust storage space is further formed inside a substantially cylindrical wall provided inside, and the dust is first held and stored in the internal dust storage space inside. Next, it is possible to further prevent the dust accumulated in the dust accumulation space from returning to the cyclone space range by holding and accumulating the dust in the outer dust accumulation space after the internal dust accumulation space is full. .

  Further, by forming the lower end portion of the substantially cylindrical wall formed inside the umbrella-like extension portion so as to protrude longer than the lower end portion of the umbrella-like extension portion, dust is firstly stored in the inner internal dust accumulation space. Then, after the internal dust storage space is full, dust is held and stored in the outer external dust storage space. At this time, the lower end of the substantially cylindrical wall is extended in an umbrella shape. Since the dust accumulated in the internal dust accumulation space is projected longer than the lower end of the protrusion, accumulation in the external dust accumulation space starts from the state where it is pushed down far away from the cyclone space. Prevents dust accumulated in the dust accumulation space from passing through the external dust accumulation space and exiting to the cyclone space, and is securely held and accumulated in the external dust accumulation space next to the internal dust accumulation space, and returns to the cyclone space range. such as DOO can be further prevented more a.

  According to a second aspect of the present invention, a notch is provided in a part of a substantially cylindrical wall formed inside the umbrella-like extension part, so that dust can be introduced from the notch part to the inside of the substantially cylindrical wall. It is easy to enter the internal dust storage space, and the pressure of the internal dust storage space is reduced by releasing the air pressure in the internal dust storage space inside the extension through the notch, so that the dust is retained and easily stored. It is possible to further prevent the dust accumulated in the dust accumulation space from returning to the external dust accumulation space and further to the cyclone space range.

In addition, it prevents pet hair such as dogs and cats contained in dust and human hair from being hooked on the cutout part and pulled further upward, and pet hair such as dogs and cats contained in dust and It is possible to prevent human hair and the like from returning to the cyclone space and wrapping around the primary filter.

  According to a third aspect of the present invention, by forming a plurality of cutouts in the substantially cylindrical wall inside the umbrella-like extension portion, air pressure in the internal dust accumulation space is dispersed and released through the plurality of cutout portions. As a result, the dust is uniformly dispersed in the internal dust storage space, and dust is retained and easily stored, thereby further preventing the dust stored in the internal dust storage space from returning to the external dust storage space and further to the cyclone space range. It is something that can be done.

  In addition, dogs and cats, such as dogs and cats contained in dust, and human hair, etc. are hooked on multiple cutouts to prevent further pulling upwards, such as dogs and cats contained in dust. It is possible to prevent pet hair and human hair from returning to the cyclone space and wrapping around the primary filter.

  4th invention impairs the external appearance in the state accommodated in the vacuum cleaner main body by providing the notch of the substantially cylindrical wall inside the said umbrella-shaped extension part in the back of a dust collector. It can be used without any problems.

  5th invention comprised the substantially cylindrical wall provided inside the umbrella-shaped extension part extended toward the said dust storage space and the said umbrella-shaped extension part with the transparent or translucent material. As a result, the amount of dust accumulated in the internal dust storage space and external dust storage space can be easily confirmed from the outside by the dust collection space, the umbrella inside of the extension part, and the substantially cylindrical internal clogging. This makes it easier to determine when to throw away garbage.

  6th invention can provide an easy-to-use vacuum cleaner by setting it as the vacuum cleaner provided with the dust collector of said 1-5. 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 the internal configuration of the dust collecting device, FIG. 5 is a cross-sectional view taken along the line BB in FIG. 3, FIG. 6 is a cross-sectional view taken along the line AA in FIG. is there.

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

  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. 5, 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. Demonstrates the effect of reducing catch and wrapping. The effect can be enhanced by subjecting the surface of the primary filter 21 to mechanical polishing, physical polishing, or electrolytic polishing, and the primary filter 21 can be kept clean by applying antibacterial treatment. it can.

  The air mixed with dust sucked in from the suction tool 5 is sucked into the suction port B17 provided in the dust box main body 8 shown in FIG. 3 via the suction port 1a provided in front of the vacuum cleaner main 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.

  The upper end of the extending part 22 is at a position above the inclined part 53, and the lower end of the extending part 22 is at a position below the inclined part 53. With this configuration, a force that presses downward from the cyclone space 31 toward the dust accumulating space 52 is generated by the flow of airflow, and the dust accumulated in the dust accumulating space 52 is prevented from rising to the cyclone space. In addition, although the lower end of the extension part 22 was in the position below the inclination part 53, it applies to the inclination part 53 and the same effect is acquired.

  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. The width L2 of the dust collecting passage 53 can be adjusted by changing the position of the upper end of the extending portion 22 up and down while maintaining substantially parallel, and gradually widens as the width L2 goes downward, It can be narrowed.

  Note that if the width L2 of the dust collection passage 32 is increased toward the dust accumulation space 52, the inclination of the inclined portion 53 can be made gentle, so that the height of the dust collector 7 can be kept low. Therefore, it becomes a compact configuration. Furthermore, if the configuration is such that the width L2 of the dust collection passage 32 gradually decreases 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.

  Here, reference numeral 60 denotes a substantially cylindrical wall provided inside the umbrella-shaped extending portion 22 provided at the lower part of the primary filter 21. The formation of the substantially cylindrical wall 60 allows the umbrella-like wall to be formed. The internal dust storage space 52a is further formed inside the substantially cylindrical wall 60 provided inside the extended portion 22, and the dust is first held and stored in the internal dust storage space 52a.

  Next, after the internal dust accumulation space 52a is full, the dust is retained and accumulated in the outer external dust accumulation space 52b, so that the dust accumulated in the dust accumulation space 52 returns to the range of the cyclone space 31. This can be further prevented.

  Reference numeral 61 denotes a notch provided in a part of a substantially cylindrical wall 60 formed inside the umbrella-shaped extension portion 22. By forming the notch 61, the notch 61 is separated from the notch 61 portion. The internal dust storage space 52a is formed by allowing dust to easily enter the internal dust storage space 52a inside the substantially cylindrical wall 60 and releasing the air pressure in the internal dust storage space 52a inside the extension 22 through the notch 61. By reducing the pressure of the gas, it is possible to further prevent the dust accumulated in the internal dust accumulation space 52a from returning to the range of the external dust accumulation space 52b and further to the cyclone space 31 by facilitating the accumulation and accumulation of dust.

  In addition, pet hair such as dogs and cats and human hair contained in the dust are likely to return to the external dust accumulation space 52b and further to the cyclone space 31 region and ride on the swirling airflow of the cyclone and Even if the lower end of the substantially cylindrical wall 60 is rotated while being pulled from the lower end toward the external dust accumulating space 52b and further toward the cyclone space 31, it is caught by the notch 61 and further pulled outward. It is possible to prevent the hair from returning to the cyclone space 31 and wrapping around the primary filter 21 with pet hair such as dogs and cats and human hair.

When a plurality of the notches 61 are formed, the air pressure in the internal dust accumulation space 52a is dispersed and released through the notches 61, so that the dust is uniformly dispersed in the internal dust accumulation space 52a. By making it easy to accumulate, it is possible to further prevent the dust accumulated in the internal dust accumulation space 52a from returning to the range of the external dust accumulation space 52b and further to the cyclone space 31.

  In addition, it prevents pet hairs such as dogs and cats and human hair contained in the dust that is about to return to the cyclone space 31 from being caught by the plurality of cutouts 61, and is prevented from being pulled further outward. Returning to the range of the space 31, it is possible to further prevent the primary filter 21 from being wrapped around pet hair such as dogs and cats and human hair.

  Further, since the lower end portion of the substantially cylindrical wall 60 formed inside the umbrella-shaped extension portion 22 is formed so as to protrude longer than the lower end portion of the umbrella-shaped extension portion 22, dust is first collected inside the interior. The dust is stored and stored in the dust storage space 52a, and then the dust is stored and stored in the outer external dust storage space 52b after the internal dust storage space 52a is full. Dust accumulated in the internal dust accumulation space is formed by protruding the lower end longer than the lower end of the umbrella-shaped extension, and accumulated in the external dust accumulation space from a state where it is pushed down far away from the cyclone space. Therefore, the dust accumulated in the internal dust accumulation space 52a is prevented from passing through the external dust accumulation space 52b and exiting to the cyclone space 31, and the external dust accumulation space 52a is surely secured next from the internal dust accumulation space 52a. Held in 2b, it is accumulated, it is possible to further prevent further that such come back to the scope of the cyclone space 31.

  Further, by providing the notch 61 provided in a part of the substantially cylindrical wall 60 at a position behind the dust collector 7, the appearance in the state of being housed in the vacuum cleaner body 1 is impaired. It can be used without any problems.

  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 bottom 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 inner diameter R4 of the outer wall 54 of the cyclone space portion. 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. 5 and 6, the dust removing portion 24 is configured by connecting a dust removing plate 44 and a rail 41 by a shaft portion 43 by a connecting means such as a screw. 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 vibrations (left-right vibration as shown in FIG. 5) to the dust removing plate 44 to give vibrations to the secondary filter 23 to separate accumulated dust. be able to.

  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 can be obtained similarly.

  As described above, the dust collector according to the present invention is a dust collector that collects dust based on the principle of cyclonic separation, and dust, pet hair, human hair, etc. accumulated in the dust accumulation space are transferred to the cyclone space. Since it can be prevented from returning, 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 52a Internal dust accumulation space 52b External dust accumulation space 53 Inclined portion 55 Return 57 Primary filter mounting frame 58 Slope 59 Flange 60 Substantially cylindrical wall 61 Notch

Claims (6)

A substantially cylindrical primary filter is concentrically disposed in a substantially cylindrical dust box body, and a cyclone space is formed between the inner surface of the dust box body and the outer peripheral surface of the primary filter, and below the cyclone space. Is provided with a substantially cylindrical dust accumulation space, an umbrella-shaped extension portion extending toward the dust accumulation space is provided at a lower portion of the primary filter, and a substantially cylindrical shape is provided inside the umbrella-shaped extension portion. A dust collector comprising: a cylindrical wall, and a lower end portion of the substantially cylindrical wall projecting longer than a lower end portion of the umbrella-shaped extension portion. 2. The dust collecting apparatus according to claim 1, wherein a notch is provided in a part of a substantially cylindrical wall formed inside the umbrella-shaped extending portion. The dust collector according to claim 1 or 2, wherein a plurality of cutouts in a substantially cylindrical wall inside the umbrella-like extension portion are formed. The dust collector according to any one of claims 1 to 3, wherein a notch of a substantially cylindrical wall inside the umbrella-like extension portion is provided behind the dust collector. The umbrella-like extension part extending toward the dust accumulation space and the substantially cylindrical wall provided inside the umbrella-like extension part are made of a transparent or translucent material. The dust collector of any one of Claims 1-4. The vacuum cleaner provided with the dust collector of any one of the said Claims 1-5.

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