JP2010051750A - Dust collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collector which includes a dust remover with a drive motor which collects powder dust adhered to a filter apparatus, to raise dust removing efficiency of the dust remover, and to improve workability. <P>SOLUTION: The dust collector is attained by providing a filter apparatus cleaning means for generating flow of the air from the inside toward the outside of the filter apparatus, and preferably including a dust removal member which rotates inside the filter apparatus, and providing a blade part at a lower part of the dust eliminator which eliminates the dust by vibrating the filter apparatus. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a dust removing device for removing dust adhering to a filter device for filtering suction air.

  The dust collector is mainly used for cleaning floor surfaces and collecting cutting dust discharged from electric tools and the like. Such a dust collector generally includes an electric motor and a dust collector fan and a filter device directly connected to the motor, and the fan rotates to collect dust from a suction port for hose attachment provided on the side of the tank. The air containing the dust sucked in by the work tends to pass through a filter device built in the dust collector. Dust is collected and adhered by the filter device, and air is separated by passing through the filter device.

  However, if the dust collection operation is continued with the dust collector as described above, dust is formed in a layered manner on the surface of the filter device, resulting in a clogged state, which may cause a reduction in work efficiency.

  Therefore, as in Patent Document 1, a dust remover is arranged on the inner side of the filter device formed in a cylindrical shape, and vibration is given by continuously repelling the ridges of the pleated filter device to the outer surface of the filter. A dust removal device that can remove the attached dust is considered.

  A dust collector equipped with such a dust removal device will be described with reference to FIGS. In the dust collector, the motor 19 and the dust collecting fan 2 directly connected to the motor 19 and the switch 3 for starting and stopping the motor 19 are arranged in the head unit 7. The head portion 7 has a substantially circular shape when viewed from above due to the shape of the motor 19 and the dust collecting fan 2. A tank 6 having a bottom surface for collecting dust etc. 5 sucked in the lower part of the circular head portion 7 is arranged, and a suction port 14 for attaching / detaching a duct hose 4 for conveying the dust etc. 5 is provided at an appropriate position of the tank 6. is there. Further, a substantially circular filter device 8 having a cross-sectional bellows for filtering the sucked dust 5 fixed to the head portion 7 is provided in a substantially central portion inside the tank 6, and a dust removal device 10 is removed inside the filter device 8. The dust holder 9 is held by the dust holder 9, and is fixed to the head portion 7. The filter device 8 has a configuration in which a filter filter cloth 8b is supported by upper and lower resin members, and the lower resin member 8a has a circular shape as shown in FIG. The dust removal device 10 has a drive motor 11 and a speed reducer 12 that decelerates the drive motor 11, and the dust removal member 15 at the tip of the output shaft 13 that protrudes from the speed reducer 12 is rotated to rotate the filter filter of the filter device 8. The cloth 8b is configured to vibrate. The dust removal device 10 is fixed to the dust removal holder 9 together with the speed reducer 12 connected to the lower part of the drive motor 11. An output shaft 13 protruding downward from the speed reducer 12 is provided, and a dust removal member 15 is fixed to the tip of the output shaft 13. When the dust removal member 15 pushes a dust removal switch (not shown) provided in the head unit 7, the drive motor 11 is driven and the dust removal member 15 rotates via the speed reducer 12.

  When the switch 3 is turned on in the above configuration, the motor 19 is activated, the dust collecting fan 2 is rotated, and a suction force is generated in the duct hose 4 through the tank 6. The dust 5 or the like passes through the duct hose 4 by suction force and is sucked into the tank 6 and filtered by the filter device 8. The dust 5 adheres to the surface of the filter filter cloth 8 b of the filter device 8, and the air only filter device 8. Enters the inside and is discharged out of the main body of the dust collector. If the dust 5 is continuously sucked, the dust 5 adheres to the entire surface of the filter filter cloth 8b of the filter device 8, and the air does not easily pass through, so that the suction force in the duct hose 4 becomes weak and cannot be sucked. In such a case, by pushing a dust removal switch (not shown) of the head unit 7, the drive motor 11 is driven, the dust removal member 15 is rotated via the speed reducer 12, and the filter cloth 8 b of the filter device 8 is moved. Due to the vibration, the dust 5 adhering to the surface of the filter cloth 8b falls off downward. However, since the dust 5 falls off from the surface of the filter filter cloth 8b, a part of the dust 5 is deposited on the circular resin member 8a on the lower surface of the filter device 8, which is caused by a decrease in dust collection efficiency or maintenance. The worker's burden was increased.

JP 2000-237519 A

  As described above, conventionally, as a technique related to dust removal of the filter device, a method of vibrating the filter cloth of the filter device and causing dust on the surface of the filter filter cloth of the filter device to fall downward is considered. Since dust accumulates between the circular resin member on the lower surface and the concave part of the filter filter cloth having a cross-sectional bellows, incomplete dust removal may occur.

  The present invention has been made in view of the above circumstances, and an object thereof is to improve the dust removal efficiency of the dust removal apparatus.

  Of the inventions disclosed in the present application, typical features will be described as follows.

  According to one aspect of the present invention, a motor and a dust collecting fan that rotates by driving the motor are housed in the head unit, and a duct hose that conveys dust sucked by the rotation of the dust collecting fan, a dust that has been conveyed, and the like. In a dust collector that has a suction port for attaching and removing a duct hose to the tank, and a filter device for filtering the sucked dust inside the tank, Filter device cleaning means for generating an air flow in a direction opposite to the air flow for suction is provided.

  According to such a configuration, the dust on the filter surface is blown in the outer peripheral direction of the filter device by receiving a force in the outer peripheral direction of the filter device due to the air flow from the inner side to the outer side of the filter device, and the circle on the lower surface of the filter device. It can be dropped on the tank bottom, not on the shaped resin member. By removing the dust adhering to the filter device, air easily passes through the entire filter cloth portion of the filter device, the suction force in the duct hose is recovered, and the suction force can be maintained.

  In the dust collector having the above-described configuration, the means for generating the air flow is preferably, for example, a blade portion that rotates inside the filter device.

  According to such a configuration, it is possible to efficiently provide wind pressure for performing dust removal from a position close to the filter device.

  Further, the dust collector has a dust removal member that rotates inside the filter device, and is provided with a dust removal device that performs dust removal by vibrating the filter device, and the filter device cleaning means is provided in the dust removal device. It is preferable that

  According to such a structure, the above-mentioned effect can be acquired at low cost by adding a blade | wing part to a dust removal apparatus, without newly adding components.

  Moreover, it is preferable that the blade | wing part is extended below the said dust removal member.

  According to such a configuration, the dust that has fallen from the filter filter cloth by the dust removal device can be blown off toward the outer periphery of the filter device by the flow of air from the blades and dropped to the tank bottom.

  Moreover, it is preferable that the blade | wing part is extended to the bottom part vicinity of a filter apparatus.

  According to such a configuration, the air flow caused by the blade portion can sufficiently apply the wind pressure to the lower end of the filter filter cloth, and dust can be prevented from accumulating on the lower surface of the filter device.

  According to the dust collector of the present invention, dust adhering to the filter device can be efficiently removed.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view including a partial cross-sectional view showing an embodiment of a dust collector according to the present invention, and FIG. 2 is a partial cross section taken along line D showing an embodiment of the dust collector according to the present invention. FIG. 3 is a side view including the dust removing device in FIG. 12 as viewed from the lower direction of the dust collector, and FIG. 3 is a sectional view taken along the line BB for showing the sectional shape of the filter device.

  1 and 2, the dust collector 1 includes a substantially circular tank 6 having a bottom surface for collecting dust and the like 5 sucked at a lower portion of a substantially circular head portion 7 in which a motor 3 is attached. Is provided, and a suction port 14 for attaching and detaching the duct hose 4 for conveying the dust 5 and the like is provided in front of the tank 6. Near the upper part of the duct hose 4 of the head portion 7, there are a motor 19 built in the dust collector, a switch 3 for starting / stopping the motor 19, and a push button for starting / stopping the dust removal motor 16 described later. A dust removal switch 16 is disposed. The motor 3 has a dust collecting fan 2 attached to a motor shaft (not shown) that extends downward from the motor 3, and is configured to rotate by the rotation of the motor 3. Near the center of the tank 6 is provided with a filter device 8 which is fixed to the head portion 7 and has a substantially circular outer shape for filtering the dust 5 containing air sucked in through the duct hose 4. The filter device 8 is configured to support a filter filter cloth 8b having a substantially circular cross-sectional bellows on the inner peripheral side by upper and lower resin members, and the lower resin member 8a of the upper and lower resin members is a circle as shown in FIG. It has a shape. In FIG. 2, the filter device 8 has a cross-sectional shape of a rib for supporting the filter filter cloth 8b. However, there is a sufficient gap through which air passing from the radial direction of the filter device 8 is passed. is there. Inside the filter device 8, a dust removal device 10 that is held by a dust removal holder 9 attached to the head unit 7 is disposed. The dust removal device 10 has a dust removal motor 11 and a speed reducer 12 that decelerates the dust removal motor 11, and a dust removal member 15 is attached to the tip of the output shaft 13 protruding from the speed reducer 12. The dust removing member is located in the vicinity of the center of the filter cloth 8b of the filter device 8 in the direction of the axis D, and the outer diameter side thereof is in a position overlapping with the crest in the cross-sectional shape of the filter cloth 8b in the radial direction. is there. Below the dust removing member 15, in the radial direction of the dust removing member 8, the blade portion 17 is positioned at a position between the output shaft 13 that is the rotation center of the dust removing member 15 and the contact portion that overlaps the filter device 8. Is formed integrally with the dust removal member 15. As shown in FIG. 3, the blade portion 17 has a U-shaped curved shape as viewed from the top and bottom of the dust collector, and is provided on the left and right sides of the axis D in FIG. To the inner peripheral surface of the filter device 8. The blade portion 17 extends from below the dust removal member 15 to the vicinity of the bottom of the filter device 8 in parallel with the axis D within a range not hitting the filter device, and the blade portion 17 rotates from the dust removal member 15 to the vicinity of the lower end. The radius is kept constant.

  In the above configuration, when the operator turns on the switch 3, the motor 19 is activated, the dust collecting fan 2 rotates, and a suction force is generated in the duct hose 4 through the tank 6. The dust 5 passes through the duct hose 4 by the generated suction force, and is sucked into the tank 6 together with air. The air containing the dust 5 sucked into the tank 6 is filtered by the filter device 8, and only the air enters the filter device 8 and is discharged out of the main body of the dust collector. The dust 5 adheres to the surface of the filter filter cloth 8b of the filter device 8, and if the dust 5 is continuously sucked, the dust 5 adheres to the entire surface of the filter filter cloth 8b of the filter device 8 and it is difficult for air to pass through. Thus, the suction force in the duct hose 4 becomes weak and the suction efficiency decreases. In such a case, by pressing the dust removal switch 16 of the head unit 7, the dust removal motor 11 is activated and the dust removal member 15 is rotated via the speed reducer 12, so that the dust removal member and the filter filter cloth 8b The filter part 8b is vibrated by the repeated contact and non-contact of the crests, and the dust 5 attached to the surface of the filter part 8b of the filter device 8 falls off downward. Further, when the dust removing member 15 rotates, the blade portion 17 provided on the dust removing member 15 also rotates counterclockwise around the output shaft 13 as viewed from A of FIG. An air flow 18 is created in a direction opposite to the air flow passing through the device 8, that is, from the inner peripheral side to the outer peripheral side. The fallen dust 5 receives a force in the outer peripheral direction of the filter device 8 during the fall, and falls to the bottom of the tank 6. Further, the dust 5 on the surface of the filter cloth 8b of the filter device 8 is blown off and removed by the air flow 18.

  As described above, the dust collector 1 creates the air flow 18 from the inner peripheral side to the outer peripheral side of the filter device 8 so that the dust 5 is removed and the entire filter filter cloth 8b portion of the filter device 8 is air-conditioned. As a result, the suction force in the duct hose 4 is restored and the suction force can be maintained. Further, since the air flow 18 is generated by the blade portion 17 that is extended to the vicinity of the bottom of the filter device 8 with the same diameter, the air flow 18 is sufficiently close to the filter device 8 from any position in the axial direction. Wind pressure can be applied, dust can be prevented from accumulating in the lower resin member 8a that supports the filter cloth 8b of the filter device 8 from above and below, and the filter device can be cleaned efficiently. . Further, since the blade portion 17 is provided integrally with the dust removal member 15 that removes dust, the dust removal performance can be improved without adding new parts. Further, since the blade portion 17 is located below the dust removal member 15, the dust that has fallen off by the dust removal member 15 is directly blown in the outer peripheral direction of the filter device 8 by the air flow 18 caused by the lower blade portion 17. Efficient dust removal is possible. Further, since the blade portion 17 is configured in a U-shaped shape, the blade outlet angle in the outer circumferential direction is inclined forward from the radial direction toward the rotation direction, and the amount of air to be discharged can be increased. It becomes.

  In the above-described embodiment, the filter cleaning means for creating the air flow 18 is the blade portion 17 formed integrally with the dust removal member 15, but the present invention is not limited to this, and the dust removal is performed. The configuration may be such that the blade portion 17 is provided separately from the member 15, and for example, the shape of the dust collection fan 2 is devised, and the dust collection fan 2 is operated by operating the dust collection switch 16 when the switch 3 is OFF. The structure may be such that it rotates in the reverse direction, and it is sufficient to create an air flow in the direction opposite to that when dust is sucked.

  Moreover, in the said embodiment, although the blade | wing part 17 was comprised by the shape curved in the U shape, it is not limited to this, It is a thing. 5 and 6 has an effect that it can be easily formed as compared with the U-shaped shape.

  Further, the position of the blade portion 17 shown in FIGS. 3, 5, and 6 is preferably below the dust removing member 15, but the air flow 18 itself of the blade portion 17 drops the dust adhering to the filter cloth 8 b. If it has an effect, it will not be limited to this, It is good also as a blade | wing part extended to the up-down direction of the dust removal member 15 as FIG.

  Further, as shown in FIGS. 8 and 9, the blade portion 17 may be provided in a part of the dust removal member 15, and according to this, the blade portion 7 and the height of the contact between the dust removal member and the filter device 8 can be reduced. It is possible to achieve the effect that a wide range of air can be blown in the vertical direction of the dust collector.

Further, the drive motor 11 is driven and driven through the speed reducer 12. However, the dust reduction device 10 is not provided with the speed reducer 12, but the output shaft 13 directly protruding from the dust removal motor 11 is provided. A dust removing member 15 may be fixed to the tip of 13.

[BRIEF DESCRIPTION OF THE DRAWINGS] It is a front view including the partial cross section which shows one Embodiment of the dust collector which becomes this invention. It is a side view including a partial cross section which shows one Embodiment of the dust collector which becomes this invention. It is A arrow directional view of FIG. It is BB sectional drawing of FIG. It is a figure which shows another embodiment corresponding to the A arrow directional view of FIG. It is a figure which shows another embodiment corresponding to the A arrow directional view of FIG. It is a side view including a partial cross section which shows another one Embodiment of the dust collector which becomes this invention. It is the elements on larger scale including a partial cross section which shows another one Embodiment of the dust collector which becomes this invention. It is a bottom view of FIG. It is a side view including the partial cross section used as a prior art. It is CC sectional drawing of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Dust collector 2 Dust collector fan 3 Switch 4 Duct hose 5 Dust 6 Tank 7 Head part 8 Filter device 8a Resin member 8b Filter filter 9 Dust removal holder 10 Dust removal device 11 Dust removal motor 12 Reduction gear 13 Output shaft 14 Suction Port 15 Dust removal member 16 Dust removal switch 17 Blade 18 Air flow 19 Dust collection motor

Claims (7)

A motor,
A dust collecting fan that rotates by driving the motor is housed in the head,
A duct hose that conveys dust sucked by rotation of the dust collecting fan and a tank that accumulates the dust that has been transported are arranged below the head part,
A suction port for attaching and detaching the duct hose to the tank;
In the dust collector provided with a filter device for filtering the sucked dust inside the tank,
A dust collector comprising a filter device cleaning means for generating an air flow in a direction opposite to an air flow for suction by the dust collection fan.   2. The dust collector according to claim 1, wherein the filter device cleaning means is a blade portion rotating inside the filter device.   The dust collector has a dust removal member that rotates inside the filter device, and is provided with a dust removal device that performs dust removal by vibrating the filter device, and the filter device cleaning means is provided in the dust removal device. The dust collector according to claim 1, wherein the dust collector is provided.   The dust collector according to claim 3, wherein the blade portion extends below the dust removing member.   The dust collector according to any one of claims 2 to 4, wherein the blade portion extends to a vicinity of a bottom portion of the filter device.   The dust collector according to any one of claims 2 to 5, wherein the blade portion has a plate shape curved in a U shape when viewed from above the dust collector.   6. The dust collector according to claim 2, wherein the blade portion has a flat plate shape.

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