JP2012254110A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner having a cyclone type dust collector capable of enhancing dust collecting performance.SOLUTION: The vacuum cleaner includes: an attachable and detachable dust collecting container 22 formed into a bottomed cylindrical shape having a circular cross-section and having an opening surface 22b in the upper surface, and provided with an inflow port 22a in a circumferential surface; an inner cylinder 23 coaxially arranged with the dust collecting container 22 and opening an inflow port 23a in a circumferential surface; a partition member 30 having a disk portion 31 extended from the inner cylinder 23 in a radial direction and a cylindrical portion 32 extended from the circumferential edge of the disk portion 31 in a vertical direction, formed with an air flow channel D between the partition member and the inner surface of the dust collecting container 22, and vertically dividing the inside of the dust collecting container 22, and a first tapered portion 22d having an inner circumferential surface formed into a tapered surface and having an inside diameter reduced downward, is provided at the lower part of the dust collecting container 22, and a second tapered portion 32a having an outer circumferential surface formed into a tapered surface, facing the first tapered portion 22d, and having an outside diameter increased upward from the lower end, is provided at the lower part of the cylindrical portion 32.

Description

  The present invention relates to a vacuum cleaner provided with a cyclone type dust collector.

  A conventional vacuum cleaner is disclosed in Patent Document 1. This electric vacuum cleaner has a main body with an electric blower. An extension pipe of a resin molded product is connected to the suction port facing the surface to be cleaned, and a connection port provided in the main body and the extension pipe are connected by a flexible connection hose.

  A cyclone type dust collector is disposed in front of the electric blower in the main body. The dust collector is provided with a detachable dust collecting container having a bottomed cylindrical shape having an opening surface on the upper surface. The dust collecting container is formed in a circular cross section, and an inflow port is provided on the peripheral surface of the upper part of the dust collecting container so as to allow air from the connecting port to flow in the circumferential tangential direction. A swirling airflow is formed in the dust collecting container by the air flowing from the inlet. A tapered portion is provided in the lower portion of the dust collecting container so that the inner peripheral surface is formed into a tapered surface and the inner diameter is decreased downward.

  In the dust collecting container, an inner cylinder having an air flow outlet on its peripheral surface is arranged coaxially. A partition member is attached to the inner cylinder to form an air channel between the inner surface of the dust collecting container and partition the dust collecting container up and down. The partition member has a disk-shaped disk part extending in the radial direction from the inner cylinder, and a cylindrical tube part standing on the periphery of the disk part. The cylindrical portion is formed by forming the outer peripheral surface into a cylindrical surface, facing the tapered portion, and extending upward and downward from the disc portion.

  A circular filter in plan view covering the opening surface of the upper surface of the dust collecting container is disposed above the inner cylinder. A cover part that forms an exterior of the main body part is provided above the filter. A cover part opens the dust collector exhaust port connected to an electric blower in a rear-end surface. In the dust collector, the cover part, the filter, the inner cylinder, and the dust container can be integrally attached to and detached from the main body part, and the dust container can be further attached to and detached from the cover part, the filter, and the inner cylinder.

  In the vacuum cleaner having the above-described configuration, dust on the surface to be cleaned is sucked together with air from the suction port body by driving the electric blower. The air sucked from the suction port body flows into the dust collecting container of the dust collector from the inlet through the extension pipe and the connecting hose. The air that has flowed into the dust collecting container swirls within the dust collecting container, and large dust is separated by centrifugal force and accumulated on the bottom of the dust collecting container.

  At this time, the backflow of the dust accumulated on the bottom of the dust collecting container to the upper part of the dust collecting container is prevented by the disk portion of the partition member and the cylindrical portion extending downward from the disk portion. Moreover, since the cylindrical part of a partition member extends upwards with respect to a disc part, the distance of the area | region below a partition member and the surrounding surface of an inner cylinder becomes large. Thereby, the entanglement to the inner cylinder of the hair and yarn waste which extended from the area | region below the partition member can be prevented.

  The airflow from which large dust has been removed flows through the inner cylinder through the outlet, and fine dust is collected by the filter. The airflow from which fine dust has been removed flows out of the dust collector through the dust collector exhaust port. The air that flows out from the dust collector passes through the electric blower and is exhausted to the outside. Thereby, the surface to be cleaned can be cleaned.

  The dust collector is removed from the main body, and the dust container is further removed, and the dust accumulated in the dust container is discarded. At this time, the dust accumulated on the bottom of the dust collecting container is easily dropped by the tapered portion and can be discarded from the opening surface.

JP 2008-253670 A (page 3 to page 10, FIG. 2)

  However, according to the conventional vacuum cleaner, the tapered portion of the dust collecting container has a tapered surface and the cylindrical portion of the cylindrical member of the outer peripheral surface of the partitioning member faces each other. The inner surface of the dust container approaches. For this reason, there is a problem in that dust accumulates between the dust collecting container and the partition member and the swirling airflow in the lower part of the dust collecting container becomes weak, and the dust collecting power of the dust collecting device is reduced.

  An object of this invention is to provide the vacuum cleaner provided with the cyclone type dust collector which can improve dust collecting power.

  In order to achieve the above object, the present invention provides a detachable dust collecting container which is formed in a bottomed cylindrical shape having a circular cross section having an opening surface on the upper surface and an airflow inlet is provided on the peripheral surface, and the dust collecting An inner cylinder that is arranged coaxially with the container and that opens an airflow outlet to the peripheral surface; a disk portion that extends radially from the inner tube; and a cylindrical portion that extends vertically from the periphery of the disk portion. A partition member that forms an air flow path between the inner surface of the dust collection container and partitions the inside of the dust collection container up and down, and swirls the airflow that flows into the dust collection container from the inlet, In a vacuum cleaner provided with a cyclone type dust collecting device for dropping into a dust collecting container, a first taper portion having an inner peripheral surface formed as a tapered surface at a lower portion of the dust collecting container to reduce an inner diameter downward. And an outer portion facing the first taper portion at the lower portion of the cylindrical portion. From the lower end to form a surface into a tapered surface upward it is characterized in that a second tapered portion for increasing the outer diameter.

  According to this configuration, an air flow including dust flows into the dust collecting container from the inlet, and a swirling air current is formed in the dust collecting container. The dust flowing into the dust collecting container is separated by the centrifugal force generated by the swirling airflow. At this time, since the first tapered portion of the dust collecting container and the second tapered portion of the cylindrical portion of the partition member are opposed to each other, a wide flow area of the air flow path between the dust collecting container and the partition member is ensured. . The dust accumulated on the bottom of the dust collecting container is prevented from flowing back to the upper part of the dust collecting container by the partition member. Moreover, the cylindrical part of the partition member extends upward with respect to the disk part, and the entanglement of the hair and yarn waste extending from the region below the partition member to the inner cylinder is prevented. Further, when the dust container is detached, the dust accumulated in the dust container is discarded. At this time, the dust deposited on the bottom of the dust collecting container is easily dropped by the first tapered portion.

  Further, the present invention is characterized in that, in the vacuum cleaner having the above configuration, the inner peripheral surface of the first taper portion and the outer peripheral surface of the second taper portion are formed substantially in parallel. According to this structure, the flow path area of the air flow path between the dust collecting container and the partition member is formed constant.

  According to the present invention, in the electric vacuum cleaner having the above-described configuration, a third taper portion is provided on the upper portion of the tubular portion so that an outer peripheral surface is formed into a tapered surface and an outer diameter is increased downward from the upper end. It is said. According to this configuration, the distance between the dust collecting container and the upper end of the partition member is increased by the third tapered portion.

  In the vacuum cleaner having the above-described configuration, the top of the outer peripheral surface of the second taper portion and the outer peripheral surface of the third taper portion opposes the upper side of the first taper portion of the dust collecting container. It is said.

  According to the present invention, since the first tapered portion is provided at the lower portion of the dust collecting container and the second tapered portion is provided at the lower portion of the cylindrical portion of the partition member, the air flow path between the dust collecting container and the partition member is provided. A wide road area is secured. Thereby, dust accumulated between the dust collecting container and the partition member is reduced, and a strong swirling airflow is formed in the lower part of the dust collecting container. Therefore, the dust collecting power of the cyclone type dust collector can be improved.

The perspective view which shows the vacuum cleaner of embodiment of this invention Side surface sectional drawing which shows the main-body part of the vacuum cleaner of embodiment of this invention Side surface sectional drawing which shows the dust collector of the vacuum cleaner of embodiment of this invention Side surface sectional drawing which shows the partition member of the dust collector of the vacuum cleaner of embodiment of this invention

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a vacuum cleaner according to an embodiment. The vacuum cleaner 1 includes a main body 2 that houses an electric blower 6 (see FIG. 2). A power cord 8 that can be pulled out and stored is provided on the back surface of the main body 2. The power cord 8 has a power plug 9 at its tip, and is supplied to the main unit 2 by being inserted into a commercial power outlet.

  A flexible connection hose 3 is connected to the front surface of the main body 2, and an extension pipe 4 is connected to the tip of the connection hose 3. A suction port body 5 having a suction port (not shown) facing the floor surface is provided at the tip of the extension pipe 4. The extension pipe 4 is provided with a pipe gripping portion 13 and an operation portion 14. The user grips the pipe gripping portion 13 to move the suction port body 5, and the cleaning operation is executed by operating the operation portion 14.

  FIG. 2 shows a side sectional view of the main body 2. The main body 2 is covered with a main body cover 10, and the electric blower 6 is disposed at the rear of the main body 2. A connection port 10a for connecting the connection hose 3 (see FIG. 1) is opened on the front surface of the main body cover 10, and an exhaust port 10b is opened on the back surface. A dust collection chamber 19 is provided in front of the electric blower 6, and a cyclone type dust collection device 20 is disposed in the dust collection chamber 19. As will be described in detail later, the dust collecting container 22 of the dust collecting device 20 is made of a transparent resin, and a window portion 10 c through which the inside of the dust collecting container 22 can be visually recognized is provided in the main body cover 10.

  The dust collector 20 is provided with an inflow port 22a communicating with the connection port 10a and a dust collector exhaust port 40a through which airflow from which dust has been removed flows. The dust collector exhaust port 40 a and the electric blower 6 are connected by a duct 15.

  A cover 40 that forms an exterior of the main body 2 is disposed on the upper part of the dust collector 20, in succession to the main body cover 10. On the upper surface of the cover portion 40, a grip portion 41 that is gripped by the user is provided. The dust collector 20 is attached to and detached from the main body 2 by holding the grip 41.

  FIG. 3 shows a side sectional view of the dust collector 20. The dust collector 20 includes a cover part 40, a filter holding part 24, an inner cylinder 23, a partition member 30, and a dust collection container 22. The cover part 40, the filter holding part 24, the inner cylinder 23, and the partition member 30 are integrated, and the dust collecting container 22 is detachably attached thereto.

  The dust collection container 22 is made of a transparent resin, and is formed in a bottomed cylindrical shape having a substantially circular cross section with an opening surface 22b on the upper surface. A cylindrical portion 22 c having a cylindrical inner peripheral surface is provided on the upper portion of the dust collecting container 22. An inflow port 22a that communicates with the connection port 10a (see FIG. 2) and into which the airflow from the connection hose 3 (see FIG. 1) flows is provided on the peripheral surface of the front portion of the cylindrical portion 22c. An airflow flows in the circumferential tangential direction into the dust collecting container 22 through the inlet 22 a, and a swirling airflow is formed in the dust collecting container 22. Thereby, a cyclone type dust collector is formed, and dust contained in the airflow is separated and collected by centrifugal force.

  A lower portion of the dust collecting container 22 is provided with a first tapered portion 22d having an inner peripheral surface formed as a tapered surface and an inner diameter decreasing downward. When dust is discarded by the first tapered portion 22d, the dust accumulated on the bottom of the dust collecting container 22 can be easily dropped.

  The filter holding unit 24 holds a filter 25 (see FIG. 2) formed by a pleated filter having a circular shape in plan view. An inner cylinder 23 projects from the lower surface of the filter holding portion 24. The inner cylinder 23 is arranged coaxially with the dust collecting container 22, and an air flow outlet 23 a is provided on the peripheral surface.

  A partition member 30 is attached to the inner cylinder 23 to form an air flow path D between the inner surface of the dust collecting container 22 and partition the dust collecting container 22 up and down. FIG. 4 shows a side sectional view of the partition member 30. The partition member 30 has a disc part 31, a cylindrical part 32, and a protruding part 33. The disc portion 31 is formed in a disc shape extending in the radial direction from the lower end of the inner cylinder 23.

  The cylindrical portion 32 is formed in a cylindrical shape that extends vertically from the periphery of the disc portion 31. A second taper portion 32a facing the first taper portion 22d is provided at the lower portion of the cylindrical portion 32. The outer peripheral surface of the second tapered portion 32a is formed as a tapered surface that increases the outer diameter from the lower end of the cylindrical portion 32 upward. At this time, the inner peripheral surface of the first tapered portion 22d and the outer peripheral surface of the second tapered portion 32a are formed substantially in parallel. Thereby, the flow path area of the air flow path D can be made substantially uniform.

  A third tapered portion 32 b is provided on the upper portion of the cylindrical portion 32. The outer peripheral surface of the third tapered portion 32b is formed as a tapered surface that increases in outer diameter from the upper end of the cylindrical portion 32 downward. Moreover, the top part 32c of the outer peripheral surface of the 2nd taper part 32a and the outer peripheral surface of the 3rd taper part 32b opposes the cylindrical part 22c above the 1st taper part 22d of the dust collecting container 22. FIG.

  The protruding portion 33 communicates with the inner cylinder 23 and protrudes downward from the lower surface of the disk portion 31, and engages the peripheral surface with a cylindrical holding member 26 (see FIG. 3) attached to the bottom surface of the dust collecting container 22. Covered. As a result, a columnar portion having a circular cross section standing at the central portion below the partition member 30 is formed, and the airflow can be smoothly swung around the columnar portion.

  Further, the fine dust that has fallen into the inner cylinder 23 from the filter 25 due to the dust removal of the filter 25 (see FIG. 2) is collected inside the holding member 26 via the protruding portion 33. The holding member 26 prevents fine dust from flowing into the airflow in the dust collecting container 22. At this time, a rubber shield material (not shown) is provided on a part of the peripheral surface of the protruding portion 33. The shield material can secure the airtightness between the projecting portion 33 and the holding member 26 and can more reliably prevent the outflow of fine dust.

  In this embodiment, as shown in FIG. 3, the diameter L1 of the opening surface 22b of the dust collecting container 22 is formed to be about 117 mm. A diameter L2 of an intersection between the bottom surface of the dust collecting container 22 and the first tapered portion 22d is formed to be about 108 mm.

  The axial distance L3 between the lower end of the inflow port 22a and the upper end of the partition member 30 is formed to be about 2.6 mm. The axial length L4 of the cylindrical portion 32 of the partition member 30 is formed to be about 34 mm. The axial distance L5 between the lower end of the partition member 30 and the bottom surface of the dust collecting container 22 is formed to be about 38.5 mm. The axial length L6 of the first tapered portion 22d of the dust collecting container 22 is formed to be about 51.1 mm.

  A radial distance L7 between the inner surface of the dust collecting container 22 and the upper end of the partition member 30 is formed to be about 10 mm. A radial distance L8 between the inner surface of the dust collecting container 22 and the top 32c of the partition member 30 is formed to be about 8.7 mm. The distance L9 between the first tapered portion 22d and the second tapered portion 32a is formed to be about 9.1 mm.

  Moreover, as shown in FIG. 4, the axial length L11 protruding upward from the disc portion 31 of the cylindrical portion 32 of the partition member 30 is formed to be about 12.3 mm. An axial length L12 protruding downward from the disc portion 31 of the cylindrical portion 32 of the partition member 30 is formed to be about 20 mm.

  In the vacuum cleaner 1 configured as described above, the dust on the floor surface is sucked from the suction port body 5 by the driving of the electric blower 6, and the airflow including the dust flows through the extension pipe 4 and the connection hose 3. The air flow including dust flows into the dust collecting container 22 of the dust collecting device 20 through the connection port 10a and the inflow port 22a, and forms a swirling air flow in the dust collecting container 22. The relatively large dust contained in the airflow is separated by the centrifugal force of the swirling airflow, and is accumulated in the dust collecting container 22.

  At this time, since the first taper portion 22d whose inner peripheral surface is a tapered surface and the second taper portion 32a whose outer peripheral surface is a tapered surface face each other, a wide flow area of the air flow path D is secured. Thereby, dust accumulated between the dust collection container 22 and the partition member 30 is reduced, and a strong swirling airflow is formed above and below the partition member 30 in the dust collection container 22.

  Also, the dust accumulated on the bottom of the dust collecting container 22 is prevented from flowing back to the upper part of the dust collecting container 22 by the disk portion 31 of the partition member 30 and the cylindrical portion 32 below the disk portion 31. Moreover, since the cylindrical part 32 of the partition member 30 extends upward with respect to the disk part 31, entanglement of the hair and yarn waste extending from the region below the partition member 30 to the inner cylinder 24 is prevented.

  The airflow from which the large dust has been removed flows out from the outlet 23 a into the inner cylinder 23 and rises, and fine dust is collected by the filter 25. The airflow that has passed through the filter 25 flows out of the dust collector 20 through the dust collector exhaust port 40a. The airflow flowing out of the dust collector 20 flows through the duct 15 and is exhausted from the exhaust port 10b through the electric blower 6.

  When the grip 41 is pulled up, the dust collector 20 is detached from the dust chamber 19. Moreover, when the cover part 40, the filter holding | maintenance part 24, the inner cylinder 23, and the partition member 30 are integrally attached or detached from the dust collecting container 22, the dust in the dust collecting container 22 will be discarded. At this time, the dust deposited on the bottom of the dust collecting container 22 can be easily dropped by the first tapered portion 22d having an inner peripheral surface tapered.

  According to the present embodiment, the first tapered portion 22d is provided at the lower portion of the dust collecting container 22, and the second tapered portion 32a is provided at the lower portion of the cylindrical portion 32 of the partition member 30, so that the dust collecting container 22 and the partition member 30 are provided. A large flow area of the air flow path D between the two is secured. Thereby, dust accumulated between the dust collection container 22 and the partition member 30 is reduced, and a strong whirling airflow is formed in the lower part of the dust collection container 22. Therefore, the dust collecting power of the cyclone type dust collecting device 20 can be improved.

  Further, since the inner peripheral surface of the first tapered portion 22d and the outer peripheral surface of the second tapered portion 32a are formed substantially in parallel, the flow area of the air flow path D between the dust collecting container 22 and the partition member 30 is uniform. Can be. Thereby, it is possible to reliably prevent the flow area of the air flow path D from becoming narrow at the lower end of the partition member 30.

  It should be noted that the outer peripheral surface of the second taper portion 32a may be formed so that the lower portion is separated from the inner peripheral surface of the first taper portion 22d. However, if the inner peripheral surface of the first tapered portion 22d and the outer peripheral surface of the second tapered portion 32a are formed substantially in parallel, the diameter of the lower end of the cylindrical portion 32 is formed to be large. Thereby, it is possible to prevent the reverse flow of the dust below the partition member 30 in a wide range, which is more desirable.

  In addition, since the third taper portion 32 b is provided on the upper portion of the cylindrical portion 32, an air flow including dust easily flows into the air flow path D from above the partition member 30. Therefore, the dust can be more reliably guided to the lower side of the partition member 30 and the dust collecting force of the dust collecting device 20 can be further improved.

  Moreover, since the top part 32c of the outer peripheral surface of the 2nd taper part 32a and the outer peripheral surface of the 3rd taper part 32b opposes upwards rather than the 1st taper part 22d, the flow path of the air flow path D on the 1st taper part 22d It is possible to ensure a large area.

  In the present embodiment, the vacuum cleaner 1 is formed in a canister type in which the suction port body 5 is connected to the main body portion 2 in which the electric blower 6 is housed via the connection hose 3. May be a vertical vacuum cleaner provided integrally.

  ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the vacuum cleaner provided with the cyclone type dust collector detachably.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 2 Main-body part 3 Connection hose 4 Extension pipe 5 Suction inlet 6 Electric blower 10 Main body cover 13 Pipe grip part 14 Operation part 15 Duct 19 Dust collection chamber 20 Dust collector 22 Dust collection container 22a Inlet 22c Cylindrical part 22d 1st taper part 23 Inner cylinder 23a Outlet 24 Filter holding part 25 Filter 26 Holding member 30 Partition member 31 Disk part 32 Cylindrical part 32a 2nd taper part 32b 3rd taper part 32c Top part 33 Projection part 40 Cover part 40a Dust collector exhaust port 41 Grasping part

Claims (4)

  A detachable dust collecting container which is formed in a bottomed cylindrical shape having a circular cross section having an opening surface on the upper surface and an air flow inlet is provided on the peripheral surface, and an air flow outlet arranged coaxially with the dust collecting container Between the inner cylinder opening to the peripheral surface, a disk part extending in the radial direction from the inner cylinder, and a cylindrical part extending vertically from the periphery of the disk part, and between the inner surface of the dust collecting container A cyclone type collection device that forms a passage and partitions the dust collection container up and down, and that swirls the airflow that flows into the dust collection container from the inlet and causes the dust to fall into the dust collection container. In the vacuum cleaner provided with the dust device, a first taper portion is provided at a lower portion of the dust collecting container so that an inner peripheral surface is formed into a tapered surface and an inner diameter is decreased downward, and at a lower portion of the cylindrical portion. Opposite to the first taper part, the outer peripheral surface is formed into a taper surface, and the upper end Vacuum cleaner, characterized in that a second tapered portion for increasing the outer diameter toward the.   The vacuum cleaner according to claim 1, wherein the inner peripheral surface of the first taper portion and the outer peripheral surface of the second taper portion are formed substantially in parallel.   3. The electricity according to claim 1, wherein a third taper portion is provided at an upper portion of the cylindrical portion so that an outer peripheral surface is formed as a taper surface and an outer diameter is increased downward from an upper end. Vacuum cleaner.   The vacuum cleaner according to claim 3, wherein the tops of the outer peripheral surface of the second taper part and the outer peripheral surface of the third taper part are opposed to each other above the first taper part of the dust collecting container.

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