JP2022135553A - Dust collection device and vacuum cleaner - Google Patents

Abstract

To provide a dust collection device and a vacuum cleaner that can discard dust more cleanly by easily preventing a fall of fine dust separated by a second separation part when discarding dust accumulated in the dust collection device.SOLUTION: A dust separation collection part 16 comprises: a first separation part 35 including a dust collection container 42 as an outer shell, and for separating dust contained in air introduced into the dust collection container 42; a second separation part 36 attachably/detachably fitted to the dust collection container 42, and for separating dust contained in air passed through the first separation part 35; and a partition part 81 comprising a substantially horizontal dust receiving surface 87 for receiving dust discharged from the second separation part 36, attached/detached to/from the dust collection container 42 together with the second separation part 36, and for dividing a space in the dust collection container 42 into a first separation chamber 41 and a fine dust collection chamber 82 to prevent dust in the fine dust collection chamber 82 and dust in the first separation chamber 41 from being mixed.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD Embodiments according to the present invention relate to dust collectors and vacuum cleaners.

A dust collector is known that includes a dust guide section that guides fine dust discharged from a dust outlet of a second separation section outward with respect to the central axis of the second separation section main body. The dust guide section has a step that is inclined downward in a widening shape at a location facing the dust discharge port of the second separation section.

The cup portion and the dust guide portion define a fine dust storage portion that stores fine dust discharged from the dust discharge port of the second separating portion.

When the integral second separation part and dust guide part are removed from the cup part, the dust guide part is separated from the cup part. As a result, the fine dust containing portion is opened into the cup portion and connected to the first separating portion defined within the cup portion. At this time, the fine dust accumulated in the fine dust accommodating portion falls into the first separation portion along the step on the inner surface of the cup portion.

JP 2016-131791 A

In the conventional dust collector, fine dust is collected in a wedge-shaped fine dust storage section that is partitioned by the steps of the dust guide section and the steps of the cup section and narrows downward.

By the way, fine dust includes extremely fine particulate dust itself and clusters of this particulate dust gathered by moisture. This kind of fine dust adheres to the steps of the dust guide section due to moisture or static electricity and may remain there.

Fine dust remaining in the dust guide portion is carried to the outside of the cup portion while remaining in the dust guide portion when the dust accumulated in the dust collector is discarded. Then, if some external force such as vibration acts on the dust guide portion, fine dust remaining in the dust guide portion may drop from the dust guide portion outside the cup portion and be scattered on the surface to be cleaned.

Therefore, the present invention provides a dust collector and an electric vacuum cleaner that can easily prevent the fine dust separated by the second separation unit from falling off when disposing of the dust accumulated in the dust collector and can dispose of the dust more cleanly. The purpose is to provide

In order to solve the above problems, a dust collecting apparatus according to an embodiment of the present invention includes a dust collecting container and the dust collecting container as an outer shell, and coarse dust contained in the air introduced into the dust collecting container. and a second separation part that is detachably attached to the dust collection container and separates fine dust contained in the air passing through the first separation part, substantially horizontal or a dust receiving surface for receiving the fine dust discharged from the second separation section, the dust receiving surface being inclined downward toward the bottom of the dust collection container as the distance from the inner peripheral surface of the dust collection container increases; The space inside the dust collection container is divided into a first space belonging to the first separation section and a second space for storing the fine dust discharged from the second separation section. and a partition part that prevents mixing of the fine dust in the second space and the coarse dust in the first space.

Further, in order to solve the above problems, an electric vacuum cleaner according to an embodiment of the present invention includes an electric blower that generates a negative pressure, and the dust collector that is fluidly connected to the electric blower. .

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the vacuum cleaner which concerns on embodiment of this invention. FIG. 2 is a perspective view of the separation dust collector according to the embodiment of the present invention; 4 is a vertical cross section of the separation and dust collection part according to the embodiment of the present invention; FIG. 4 is an enlarged longitudinal section of the separation and dust collection part according to the embodiment of the present invention; FIG. FIG. 4 is a diagram schematically showing the dust receiving surface of the separation and dust collection part according to the embodiment of the present invention, taken along line VV in FIG. 3; FIG. 4 is a vertical cross-section of a separate dust collector showing another example of the dust receiving surface according to the embodiment of the present invention; FIG.

1 to 6, embodiments of a dust collector and a vacuum cleaner according to the present invention will be described below. In addition, the same code|symbol is attached|subjected to the same or corresponding structure in several drawings.

FIG. 1 is a perspective view of a vacuum cleaner according to an embodiment of the invention.

As shown in FIG. 1, the vacuum cleaner 1 according to this embodiment is, for example, a stick type and a handy type. A vacuum cleaner 1 includes a handheld cleaner body 2, an extension pipe 3 detachable from the cleaner body 2, and a suction port body 5 detachable from the extension pipe 3. - 特許庁

In addition, when the user holds the vacuum cleaner 1 in hand, FIG. 1 corresponds to a view of the vacuum cleaner 1 viewed obliquely from the rear left of the user.

Also, the vacuum cleaner 1 may be a canister type, an upright type, or a robot cleaner that moves under autonomous control.

The cleaner body 2 includes a body case 12 having a handle 11, an electric blower 13 that is housed in the body case 12 and generates suction negative pressure, and a suction pipe 15 that is fluidly connected to the suction side of the electric blower 13. , a separated dust collector 16 (dust collector) detachably attached to the main body case 12, a main body controller 17 mainly controlling the electric blower 13, and a secondary detachably attached to the main body case 12. It has a battery 18 and a holding mechanism (not shown) that detachably holds the separated dust collecting part 16 on the main body case 12 .

The cleaner main body 2 drives the electric blower 13 with electric power stored in the secondary battery 18 , generates a negative pressure by driving the electric blower 13 , and causes the generated suction negative pressure to act on the separation dust collecting section 16 . The suction negative pressure acting on the separated dust collecting section 16 acts on the suction pipe 15, the extension pipe 3, and the suction port body 5 in sequence. The suction negative pressure reaching the suction port body 5 acts on the suction port 19 of the suction port body 5 . The suction negative pressure acting on the suction port 19 sucks air containing dust (hereinafter referred to as “dust-containing air”) from the floor surface into the suction port 19 . The dust-laden air sucked into the suction port 19 flows through the suction port body 5 , the extension pipe 3 and the suction pipe 15 into the separated dust collecting section 16 . The separation and dust collection unit 16 separates dust from the dust-containing air sucked by the suction negative pressure, collects the separated dust, accumulates the dust, and sends the dust-separated air to the electric blower 13 . The electric blower 13 exhausts the dust-separated air to the outside of the main body case 12 .

The electric vacuum cleaner 1 and the cleaner main body 2 are used in various postures by the user holding the cleaner main body 2 in hand. Therefore, in FIG. 1, the view in the direction of the solid line arrow P is defined as a plan view (top view), and the view in the direction opposite to the solid line arrow P is defined as a bottom view. In FIG. 1, a view in the direction of the solid line arrow F is a front view (front view), and a view in the direction opposite to the solid line arrow F is a back view. In FIG. 1, the view in the direction of the solid line arrow L is the left side view, and the view in the opposite direction of the solid line arrow L is the right side view. That is, when the user holds the vacuum cleaner 1 with the extension tube 3 projecting horizontally toward the front of the user, the front, rear, top, bottom, left, and right of the vacuum cleaner 1 are aligned with the user. match.

Main body case 12 accommodates electric blower 13 and control circuit board 21 on which main body controller 17 is mounted.

The main body case 12 is arranged on an extension line of the extension pipe 3 and has a columnar front portion 12a extending along the extension line of the extension pipe 3, a center portion 12b hanging obliquely downward and rearward from the front portion 12a, and a center portion 12b. a cylindrical rear portion 12c extending rearward from the lower half of the rear surface of the central portion 12b; , is equipped with

The main body case 12 also has a charging socket that leads charging power to the secondary battery 18 . The charging socket is connected to the secondary battery 18 via a charging circuit.

Further, the body case 12 includes an input section 22 arranged within a range where the user holding the handle section 11 can move his or her fingers.

The front portion 12a and the central portion 12b cooperate to detachably hold the separating dust collecting portion 16. As shown in FIG. The separated dust collector 16 has a tubular appearance as a whole. The front portion 12 a and the central portion 12 b hold the separated dust collecting portion 16 so that the center line C of the separating dust collecting portion 16 , in other words, the longitudinal direction thereof is substantially parallel to the extension line of the center line of the extension pipe 3 . When the extension pipe 3 and the separated dust collector 16 are attached to the main body case 12, the extension of the center line of the extension pipe 3 and the center line C of the separated dust collector 16 substantially extend from the main body case 12 to the left and right. It is arranged on a central longitudinal plane that divides evenly. That is, the longitudinal front portion 12a and the tubular dust collecting portion 16 are arranged side by side so that their center lines are substantially parallel to each other.

A front portion 12a of the main body case 12 accommodates a suction pipe 15 extending in the longitudinal direction of the extension pipe 3, that is, extending in the extension direction.

The rear portion 12c of the body case 12 accommodates the electric blower 13 and the control circuit board 21. As shown in FIG. The rear portion 12 c has an exhaust port 25 for discharging the exhaust air from the electric blower 13 from inside the main body case 12 .

The central portion 12b of the main body case 12 holds a part of the rear end portion of the separated dust collecting portion 16 provided side by side with the front portion 12a so as to cover it, and the airflow connecting the separated dust collecting portion 16 and the electric blower 13 is provided. It houses a path (not shown). The central portion 12b is connected to the rear end portion of the front portion 12a extending substantially linearly and swells obliquely downward and rearward of the main body case 12 . The central portion 12b has an appearance that slopes downward toward the rear of the main body case 12 .

The suction pipe 15 is accommodated in the front portion 12 a of the body case 12 and supported by the body case 12 . The suction pipe 15 is arranged substantially parallel to the separated dust collector 16 when the separated dust collector 16 is attached to the main body case 12 . The suction pipe is a straight pipe that extends substantially without bends. The direction along the center line of the suction pipe, the extending direction of the suction pipe, and the longitudinal direction of the suction pipe are substantially the same, and substantially coincide with the longitudinal direction of the main body case 12 .

The suction pipe has a joint structure to which the extension pipe 3 can be attached and detached. This joint structure is provided at the open end of the suction pipe. The suction pipe is a fluid inlet of the cleaner main body 2 and also a joint that fluidly connects the extension pipe 3 and the separated dust collecting section 16 . By removing the extension pipe 3 from the cleaner main body 2, the suction pipe functions as a suction port when the cleaner main body 2 is used alone as a handy electric vacuum cleaner. The tip of the suction pipe is open to the front of the cleaner body 2 .

The rear end of the suction pipe has a second opening connected to the dust separation section 16 . The second opening is open radially outward of the suction pipe and faces the separated dust collecting portion 16 . The second opening opens downward in the body case 12 . The second opening is provided on the bottom surface of the front portion 12 a of the body case 12 . When the separated dust collector 16 is attached to the main body case 12, the bottom surface of the front portion 12a closely follows the separated dust collector 16. As shown in FIG. Then, the second opening is fluidly connected to the separation and dust collection section 16 .

The separated dust collector 16 is arranged in an L-shaped accommodation space formed by the front portion 12 a of the main body case 12 and the central portion 12 b of the main body case 12 . The separating and collecting part 16 separates, collects, and accumulates dust from the dust-containing air flowing into the cleaner main body 2 , while sending clean air from which the dust is removed to the electric blower 13 . The separation and dust collection unit 16 is of a centrifugal separation method that centrifuges dust and air using the difference in mass between dust and air. A filtration separation type filter for filtering dust from the dust-containing air may be provided downstream of the separation and dust collection unit 16 .

In addition, the separated dust collector 16 extends in a cylindrical shape along the front-rear direction of the main body case 12 . In other words, the separated dust collector 16 is a cylindrical container having a center line C extending in the longitudinal direction of the main body case 12 . The direction along the center line C of the separated dust collecting portion 16, the extending direction of the separated dust collecting portion 16, and the longitudinal direction of the separated dust collecting portion 16 are substantially the same, and substantially aligned with the front-rear direction of the main body case 12. I am doing it. Therefore, the centerline C of the separate dust collector 16 is substantially parallel to the centerline of the suction pipe. In addition, the separated dust collector 16 is provided side by side with the suction pipe. In other words, the longitudinal direction of the separated dust collector 16 follows the longitudinal direction of the suction pipe. The diameter of the separated dust collecting portion 16 is larger than the diameter of the suction pipe, and the separated dust collecting portion 16 protrudes in the left-right direction (width direction) of the cleaner body 2 beyond the suction pipe and the front portion 12 a of the main body case 12 . there is The left-right direction (width direction) of the cleaner body 2 is the normal direction of a virtual plane substantially including the center line C of the cylindrical separated dust collecting portion 16 and the center line of the suction pipe 15, or corresponds to the normal direction of an imaginary plane that substantially passes through the center line C of the shaped separation dust collector 16 and the center line of the suction pipe 15 . Also, this virtual plane corresponds to the central longitudinal section of the cleaner body 2 .

The holding mechanism includes a first mechanism that detachably connects one end of the separated dust collecting section 16 and the main body case 12, and a detachable connection of the other end of the separated dust collecting section 16 and the main body case 12. and a second mechanism for

The first mechanism is a lock mechanism that connects the separation and dust collection section 16 and the main body case 12 by hooking a projection provided on the main body case 12 to a recess provided on the separation and dust collection section 16 . The concave portion and the convex portion of the first mechanism are caught or disengaged depending on the relative positional change between the separated dust collecting portion 16 and the main body case 12 .

The convex portion of the first mechanism is provided at the front end portion of the bottom surface of the front portion 12 a of the main body case 12 . The concave portion of the first mechanism is arranged at one end of the separating dust collecting portion 16 at a position that matches the convex portion.

The second mechanism is a locking mechanism that hooks a concave portion provided in the main case 12 to a convex portion provided in the separated dust collecting portion 16 to connect the separated dust collecting portion 16 and the main case 12 . Unlike the first mechanism, the second mechanism has an operation piece capable of removing the convex portion from the concave portion while maintaining the relative position between the separated dust collecting portion 16 and the main body case 12 . The operation piece is provided in the separation and dust collecting part 16, and the convex portion of the second mechanism is integrated with the operation piece.

The concave portion of the second mechanism is provided at the bottom of the central portion 12 b of the main body case 12 , that is, at the farthest portion from the suction pipe 15 in the radial direction of the suction pipe 15 . The convex portion of the second mechanism is arranged at the other end of the separating dust collecting portion 16 at a position that fits in the concave portion. Both the concave portion of the first mechanism and the convex portion of the second mechanism are provided in the separated dust collecting portion 16 and are substantially aligned with respect to the center in the longitudinal direction of the separated dust collecting portion 16 and the center in the lateral direction of the separated dust collecting portion 16 . are strategically placed. In addition, the convex portion of the second mechanism is arranged at the farthest portion within the separation dust collecting portion 16 when viewed from the concave portion of the first mechanism.

The operating piece can be operated with mechanical movements such as sliding and swinging, and is part of various mechanisms that convert the movement associated with this operation into the movement of removing the convex portion from the concave portion. For example, the user can slide the operation piece to remove the protrusion of the second mechanism from the recess. Further, when the operation piece is not operated by the user, the operation piece moves the convex portion of the second mechanism to a position where it is caught by the concave portion.

When the separation and dust collection part 16 is attached to the main body case 12, the first mechanism connects the separation and dust collection part 16 and the main body case 12 by hooking the protrusions in the recesses, and the second mechanism is the recesses. The separation and dust collecting part 16 and the main body case 12 are connected by hooking the projection on the . Then, when the operation piece is operated and the protrusion of the second mechanism is pulled out of the recess of the second mechanism, the lock of the second mechanism is released. At this time, the convex portion of the first mechanism maintains a state of being caught in the concave portion. Therefore, the user moves the other end of the separated dust collecting section 16 away from the main body case 12 with the first mechanism as a fulcrum while the lock of the second mechanism is released. As a result, the separating dust collecting part 16 is separated from the main body case 12, and eventually the convex part of the first mechanism is pulled out of the concave part, and the locking of the first mechanism is also released.

When the separated dust collecting part 16 is detached from the main body case 12, first, the convex part of the first mechanism is hooked on the concave part. With the first mechanism locked, the user brings the other end of the separated dust collector 16 closer to the main body case 12 using the first mechanism as a fulcrum. Then, the separation and dust collecting part 16 is attached to the main body case 12, and eventually the convex part of the second mechanism is caught by the concave part, and the second mechanism is also locked.

In addition, although the separation dust collector 16 according to the present embodiment is attached to and detached from the main body case 12 while drawing an arc track, it may be attached and detached while drawing a straight line track in the radial direction of the suction pipe 15 . In this case, the first mechanism and the second mechanism are preferably locked and unlocked substantially simultaneously. The direction of movement of the separated dust collector 16 when the separated dust collector 16 is attached to or detached from the main body case 12 may be any direction that intersects the longitudinal direction of the suction pipe 15 . Therefore, when the separated dust collector 16 is attached to the main body case 12 , the separated dust collector 16 moves toward the suction pipe 15 in the radial direction of the suction pipe 15 , and separates and collects the dust from the main body case 12 . When the part 16 is detached, the separated dust collecting part 16 may move away from the suction pipe 15 in the radial direction of the suction pipe 15 .

The central portion 12b of the main body case 12 includes a connection port fluidly connected to the exhaust side of the separated dust collecting portion 16, and a separation portion downstream air passage pipe fluidly connecting the connection port and the electric blower 13. ing. The central portion 12 b includes a portion that is sandwiched between the separated dust collecting portion 16 and the rear portion 12 c of the main body case 12 . A connection port and a separation section downstream air passage pipe are arranged at this portion.

The connecting port is arranged at a portion facing the front of the central portion 12b. The connecting port faces the rear end face of the separated dust collector 16 when the separated dust collector 16 is attached to the main body case 12 . Therefore, the connection port is arranged on an extension line of the center line C of the separated dust collecting portion 16 in a state where the separated dust collecting portion 16 is attached to the main body case 12 .

The suction side of the electric blower 13 is connected to the separation and dust collection section 16 via a connection port and a separation section downstream air passage pipe. The electric blower 13 sucks air from the separated dust collector 16 to generate suction negative pressure. The electric blower 13 includes an impeller, an electric motor that generates rotational driving force for the impeller, and a rotating shaft that transmits the rotational driving force from the electric motor to the impeller.

The impeller is, for example, a turbofan and has a plurality of blades. Each vane has a twisted shape that rises in the radial direction of the hub gradually from the center of the conical hub toward the outer edge of the hub. In other words, each blade is a so-called three-dimensional wing with a varying airfoil or wing section from leading edge to trailing edge. The impeller is covered with a case having a suction port.

The electric blower 13 has a cylindrical or columnar shape centering on the rotation axis. It is accommodated in the main body case 12 with the center line of the rotating shaft directed in the front-rear direction of the main body case 12 and the suction port directed forward.

The rear portion 12c of the body case 12 accommodates a control circuit board 21 on which the body control section 17 is mounted. The control circuit board 21 is arranged directly behind the electric blower 13 .

The body control unit 17 includes a microprocessor and a storage device that stores various arithmetic programs executed by the microprocessor, parameters, and the like. The storage stores various settings, ie arguments, associated with a plurality of preset operating modes. A plurality of operating modes are associated with the output of electric blower 13 . Input values different from each other, ie, input values of the electric blower 13, and current target values flowing through the electric blower 13 are set for the respective operation modes. Each operation mode is associated with an operation input received by the input unit 22 . The main control unit 17 selectively selects an arbitrary operation mode corresponding to the operation input to the input unit 22 from a plurality of preset operation modes, reads the setting of the selected operation mode from the storage unit, The electric blower 13 is operated according to the setting of the read operation mode.

The rear portion 12c of the main body case 12 is arranged on an extension of the center line C of the separated dust collector 16 when the separated dust collector 16 is attached to the main body case 12 .

Secondary battery 18 is also called a storage battery, a rechargeable battery, and a rechargeable battery. The secondary battery 18 stores power consumed by the electric blower 13 and the main body control unit 17 . The secondary battery 18 is detachably attached to the bottom of the rear portion 12c of the body case 12. As shown in FIG. The secondary battery 18 may be fixed in a non-removable manner. By preparing a plurality of secondary batteries 18, the detachable secondary batteries 18 can be appropriately replaced and used. When the charging rate of the secondary battery 18 attached to the vacuum cleaner 1 decreases, the vacuum cleaner 1 can be operated by replacing the secondary battery 18 with a charged secondary battery 18. can continue.

The handle portion 11 is provided integrally with the main body case 12 . The handle portion 11 is a portion that is held by a user's hand in order to clean the floor surface with the electric vacuum cleaner 1 . Therefore, it is preferable that the grip portion 11 has an appropriate shape that can be easily gripped by fingers.

The handle portion 11 is provided between the front portion 12 a and the rear portion 12 c of the body case 12 . The handle portion 11 extends in the extension direction of the extension tube 3 from the rear end of the front portion 12a, curves into an arc, and is connected to the rear end portion of the rear portion 12c. Between the handle portion 11 and the rear surface of the central portion 12b of the main body case 12, and between the handle portion 11 and the top surface of the rear portion 12c of the main body case 12, continuous spaces extend in the left-right direction of the main body case 12 ( width direction). In this space, the fingers of the user who grip the handle 11, including the index finger, middle finger, ring finger, and little finger, are arranged.

The input portion 22 is provided on the top surface of the front end portion of the handle portion 11 so that the user holding the handle portion 11 can easily operate it with his/her thumb.

The input unit 22 includes an operation start switch 22 a that accepts operation start operation of the electric blower 13 and an operation stop switch 22 b that accepts operation stop operation of the electric blower 13 . The operation start switch 22 a and the operation stop switch 22 b are electrically connected to the body control section 17 . A user of the vacuum cleaner 1 can selectively select an operation mode of the electric blower 13 by operating the input unit 22 . The operation start switch 22a also functions as an operation mode changeover switch while the electric blower 13 is in operation. In this case, the body control unit 17 switches the operation mode in the order of strong→medium→weak→strong→medium→weak→ . Note that the input unit 22 may separately include a strong operation switch (not shown), a medium operation switch (not shown), and a weak operation switch (not shown) instead of the operation start switch 22a.

Next, the separation and dust collection section 16 will be described in detail.

In the stick-type or handy-type vacuum cleaner 1 as shown in FIG. 1, the separated dust collector 16 can take various postures. Therefore, in order to simplify the explanation, the separation and dust collecting section 16 is illustrated in an upright position. The cylindrical separation dust collecting part 16 has a center line C directed vertically in an upright posture.

FIG. 2 is a perspective view of a separation dust collector according to the embodiment of the present invention.

FIG. 3 is a vertical cross-section of the separation dust collector according to the embodiment of the present invention.

FIG. 4 is an enlarged vertical cross-section of the separation dust collector according to the embodiment of the present invention.

As shown in FIGS. 2 to 4, the separating and collecting part 16 of the electric vacuum cleaner 1 according to the present embodiment includes an inlet 31 fluidly connected to the suction pipe 15 and an electric motor for separating the dust-separated air. and an outflow port 32 for sending out to the blower 13 . The inlet 31 is arranged on the side surface 16 a of the cylindrical separated dust collector 16 , and the outlet 32 is arranged on the other end surface of the cylindrical separated dust collector 16 .

One end surface of the separated dust collecting portion 16 is the bottom surface when the separated dust collecting portion 16 is upright, and the front surface of the cleaner main body 2 when the separated dust collecting portion 16 is attached to the main body case 12. turn to The other end face of the separated dust collecting part 16 is the top face when the separated dust collecting part 16 is upright, and extends to the rear surface of the cleaner main body 2 when the separated dust collecting part 16 is attached to the main body case 12. Turn.

The separation and dust collection unit 16 also includes a first separation unit 35 that separates coarse dust from the dust-containing air guided to the separation and dust collection unit 16, and a first separation unit 35 that separates fine dust from the fine dust-containing air passing through the first separation unit 35. and a second separation section 36 for centrifugally separating dust. The first separation section 35 is a first separation stage, and the second separation section 36 is a second separation stage.

In the posture in which the separating dust collecting section 16 stands upright, the first separating section 35 is arranged on the lower half side of the separating dust collecting section 16 , and the second separating section 36 is arranged on the upper half side of the separating dust collecting section 16 . be. The first separation section 35 and the second separation section 36 are stacked adjacent to each other in the height direction of the cylindrical separation and dust collection section 16 . In other words, when the separating dust collecting section 16 is in an upright posture, the second separating section 36 is positioned directly above the first separating section 35, and the first separating section 35 is positioned directly below the second separating section 36. .

The first separation part 35 and the second separation part 36 work together to make the outer appearance of the separation dust collecting part 16 into a substantially cylindrical shape.

Coarse dust is mainly fibrous dust such as lint and cotton dust and dust with a large mass such as sand grains, and fine dust is particulate or powdery dust with a small mass.

The first separation unit 35 separates dust from the dust-containing air by a centrifugal separation method (cyclone method). The first separation section 35 includes a cup-shaped dust collection container 42 as an outer shell of the first separation chamber 41 (first space), a cylindrical inner cylindrical portion 43 arranged in the dust collection container 42, and a collection chamber. and a dust trapping cup 45 disposed within the dust container 42 and connected to the inner cylindrical portion 43 .

A cup-shaped, that is, a bottomed cylindrical dust collection container 42 is the outer shell of the lower half of the separation and dust collection section 16 and also serves as the outer shells of the first separation chamber 41 and the dust collection chamber 47 . The dust collection container 42 has an inlet 31 . The inlet 31 is arranged on the side wall 42 a of the dust container 42 . The dust collecting container 42 has a large diameter portion 51 arranged on the side of the open end 42b, and a reduced diameter portion 52 which is contiguous with the lower end of the large diameter portion 51 and narrows in diameter as it approaches the bottom wall 42c of the dust collecting container 42. and a small-diameter portion 53 that is connected to the reduced-diameter portion 52 and reaches the bottom wall 42c.

The reduced-diameter portion 52 has an annular step 55 connecting the large-diameter portion 51 and the small-diameter portion 53 inside the dust collection container 42 . In addition, the inner peripheral surface of the large diameter portion 51 and the inner peripheral surface of the small diameter portion 53 are also very gently tapered downward compared to the reduced diameter portion 52 .

The small diameter portion 53 is connected to the bottom wall 42 c of the dust container 42 .

The inner cylindrical portion 43 is housed inside the dust collection container 42 . The inner cylindrical portion 43 and the dust container 42 are arranged concentrically. The annular space separating the inner cylindrical portion 43 and the dust collection container 42 serves as a first separation chamber for centrifugally separating coarse dust by swirling the dust-laden air flowing into the first separation portion 35 from the inlet 31 of the dust collection container 42. is 41. In other words, the first separation chamber 41 is defined between the side wall 42 a of the dust container 42 and the inner cylindrical portion 43 . The first separation chamber 41 is an annular space that swirls the air flowing into the dust collection container 42 to centrifuge dust contained in the air.

The inner cylindrical portion 43 is fixed to the second separating portion 36 . The inner cylindrical portion 43 hangs down from the second separation portion 36 and extends toward the bottom wall 42 c of the dust container 42 . The space inside the inner cylindrical portion 43 fluidly connects and relays the first separation chamber 41 and the second separation portion 36 . The inner cylinder part 43 includes a frame body 62 having a plurality of bones 61 arranged in a cylindrical shape spaced apart from each other, and a first mesh filter 63 cylindrically surrounding the side surface of the frame body 62 . The openings 62 a between the bones 61 of the frame 62 allow air to flow from the first separation chamber 41 to the second separation section 36 . A side surface of the inner cylindrical portion 43 , that is, the first mesh filter 63 faces the inlet 31 .

The first mesh filter 63 prevents the first separation during a period when the swirling flow in the first separation chamber 41 is not sufficiently developed, such as immediately after the electric blower 13 is started or when it is stopped, and even after the swirling flow is developed. This prevents coarse dust from flowing from the portion 35 to the second separating portion 36 side.

Note that the inner cylindrical portion 43 does not necessarily require the first mesh filter 63 as long as it can prevent coarse dust from flowing downstream. For example, if the frame 62 of the inner cylindrical portion 43 has a grid shape that is fine enough to prevent the passage of coarse dust, or has holes that are small enough to prevent the passage of coarse dust. , does not necessarily require the first mesh filter 63 .

The dust trapping cup 45 is housed inside the dust container 42 in the same manner as the inner cylindrical portion 43 . The dust trapping cup 45 is closer to the bottom wall 42 c of the dust container 42 than the inner cylindrical portion 43 . The dust trapping cup 45 is provided at the end of the inner cylindrical portion 43 near the bottom wall 42c of the dust collecting container 42, that is, at the lower end of the inner cylindrical portion 43. As shown in FIG. The dust trapping cup 45, the inner cylindrical portion 43, and the dust container 42 are arranged concentrically. The bottomed cylindrical dust trapping cup 45 has a bottom wall connected to the inner cylindrical portion 43 and side walls extending toward the bottom wall 42 c of the dust collecting container 42 . That is, the dust trapping cup 45 is a bottomed cylindrical body that opens toward the bottom wall of the dust container 42 . A side wall of the dust trapping cup 45 faces the inner circumferential surface of the small diameter portion 53 of the dust container 42 with a gap therebetween. The dust trapping cup 45 has a larger diameter than the inner cylindrical portion 43 .

A space separating the dust trapping cup 45 and the dust collection container 42 is a dust collection chamber 47 in which the dust separated by the first separation section 35 is accumulated. The dust collection chamber 47 is arranged at the bottom of the dust collection container 42 when the separated dust collection section 16 is erected.

The first separation unit 35 centrifuges coarse dust from the dust-containing air introduced from the inlet 31 . The centrifugally separated coarse dust flows into the dust collection chamber 47 through the gap between the side wall of the dust capture cup 45 and the small diameter portion 53 of the dust collection container 42 and is accumulated in the dust collection chamber 47 . A swirling flow that separates coarse dust from the dust-containing air is generated in the first separation section 35 by suction negative pressure. Fine dust, which is difficult to be separated by the first separation section 35, gathers at the center of the swirling vortex. The air containing this fine dust is guided to the second separation section 36 via the space inside the inner cylindrical section 43 .

When the separating dust collecting part 16 is disassembled and the second separating part 36 is removed from the dust container 42 , the inner cylindrical part 43 and the dust trapping cup 45 come out of the dust collecting container 42 along with the second separating part 36 .

The second separation section 36 separates fine dust from the dust-laden air passing through the first separation section 35 . The second separation unit 36 includes a relay air passage 65 that guides the air that has passed through the first separation chamber 41, a plurality of second separation chambers 71 that separate fine dust from the air that flows in from the relay air passage 65, and fine dust that is decomposed. and a plurality of exhaust air paths 72 for guiding the air flowing out of the second separation chamber 71 after being separated to the electric blower 13 .

The second separating portion 36 is detachably attached to the dust container 42 and closes the open end 42 b of the dust container 42 . When the dust container 42 is placed on a horizontal surface, the second separating portion 36 can be removed from the dust container 42 substantially vertically upward. Here, "when the dust collection container 42 is placed on a horizontal surface" means that the bottom surface of the dust collection container 42, that is, the bottom surface of the separated dust collection section 16 faces the horizontal surface, and the separated dust collection section 16 is erected. means

Further, the second separating portion 36 supports the inner cylindrical portion 43 and the dust trapping cup 45 on the center line C of the separated dust collecting portion 16 which is the center line of the dust collecting container 42 .

A second separation section cover 73 corresponding to the outer shell of the second separation section 36 has a cylindrical shape. The plurality of second separation chambers 71 are arranged along the inner peripheral surface of the second separation section cover 73 . In other words, the plurality of second separation chambers 71 are annularly arranged around the center line C of the separation and dust collection section 16 . Further, the central portion of the plurality of second separation chambers 71 arranged annularly is a relay air passage 65 .

The relay air passage 65 guides the air (dust-containing air) flowing from the inner cylindrical portion 43 in a direction away from the dust collection container 42 and guides it to the second separation chamber 71 .

The plurality of second separation chambers 71 are aligned annularly along the inner peripheral surface of the cylindrical second separation section cover 73 and surrounding the intermediate air passage 65 . Each second separation chamber 71 has a cylindrical wall 75 that produces a swirling flow and a truncated conical wall 76 that produces a spiral flow.

Cylindrical wall 75 and frusto-conical wall 76 have centerlines that are substantially collinear. This center line, that is, the center line of the second separation chamber 71 is arranged parallel to the center line C of the cylindrical separation dust collector 16 . Note that the center line of the second separation chamber 71 may be radially inclined so as to form a conical surface that converges toward the first separation section 35 side and expands toward the second separation section 36 side. When viewed as a whole of the plurality of second separation chambers 71 , the centerlines of the cylindrical wall 75 and the truncated conical wall 76 are circularly arranged around the centerline C of the separation dust collector 16 .

The truncated conical wall 76 also has a large diameter upper base and a smaller diameter lower base than the upper base. The upper base of the truncated conical wall 76 is arranged on the far side from the first separation portion 35 and the lower base is arranged on the side close to the first separation portion 35 . Cylindrical wall 75 has substantially the same diameter as the upper base of frustoconical wall 76 and is connected to the upper base of frustoconical wall 76 .

The cylindrical wall 75 is arranged farther from the first separating portion 35 than the frustoconical wall 76 . Cylindrical wall 75 has inlet 77 for dust-laden air. The inlet 77 is provided on the side wall of the cylindrical wall 75 . The inflow port 77 is a side wall of the cylindrical wall 75 and is arranged near the center line C of the separated dust collector 16 and connected to the relay air passage 65 .

The cylindrical wall 75 includes a bottom plate located farthest from the first separation section 35 and a tubular inner wall provided on the bottom plate and extending along the center line of the second separation chamber 71 within the cylindrical wall 75 . A cylinder 78 is provided. The outer surface of the inner cylinder 78 faces the inlet 77 . The annular space separating the inner cylinder 78 and the cylindrical wall 75 swirls the flow of dust-laden air flowing from the inlet 77 . Inside the inner cylinder 78 is an exhaust air passage 72 for exhausting the clean air separated from the dust-containing air in the second separation chamber 71 . An opening on the downstream side of the exhaust air passage 72 is the outflow port 32 . When the separated dust collector 16 is attached to the main body case 12 , the exhaust air passages 72 of the respective second separation chambers 71 flow through the outlets 32 arranged on the other end surface of the separated dust collector 16 . , is connected to a connecting port in the central portion 12b of the main body case 12. As shown in FIG.

Furthermore, the cylindrical wall 75 is open at the portion closest to the first separating portion 35 and connected to the opening at the upper base of the truncated cone-shaped wall 76 .

The truncated cone-shaped wall 76 has a smaller diameter as it approaches the first separation portion 35 . The upper base of the truncated cone-shaped wall 76 has an opening leading to the inside of the cylindrical wall 75, and the swirling flow generated between the cylindrical wall 75 and the inner cylinder 78 is introduced into the truncated cone-shaped wall 76. Create a spiral flow. The lower base of the frusto-conical wall 76 has a waste port 79 leading into the dust container 42 .

The second separation chamber 71 introduces dust-laden air from an inlet 77 . The dust-laden air flowing from the inlet 77 into the second separation chamber 71 swirls along the inner peripheral surface of the cylindrical wall 75, and further along the inner peripheral surface of the truncated cone-shaped wall 76 to form a spiral spiral toward the waste port 79. Creates a stream to separate fine dust from the air. The separated fine dust is discharged from the disposal port 79 to the dust collection container 42 side. Clean air from which dust has been separated flows along the centerline of the second separation chamber 71 , that is, the centerlines of the cylindrical wall 75 and the truncated conical wall 76 , and flows out from the exhaust air passage 72 in the inner cylinder 78 .

The separation and dust collection section 16 includes a partition section 81 that is fixed to the second separation section 36 and detachable from the dust collection container 42 integrally with the second separation section 36 .

The partition part 81 divides the space in the dust collection container 42 into a first separation chamber 41 belonging to the first separation part 35 and a fine dust collection chamber 82 (second space) in which fine dust discharged from the second separation part 36 is collected. ) and The partition part 81 is arranged below the disposal port 79 of the second separation chamber 71 . The partition part 81 prevents fine dust in the fine dust collection chamber 82 and coarse dust in the first separation chamber 41 from being mixed. Moreover, the partition part 81 prevents fine dust in the fine dust collection chamber 82 and coarse dust in the dust collection chamber 47 from being mixed. That is, the partition part 81 is a partition wall that separates the first separation part 35 and the second separation part 36 . The partition portion 81 is fixed to the base of the inner cylindrical portion 43 and extends toward the inner peripheral surface of the dust container 42 .

Moreover, the partition part 81 is in contact with the inner peripheral surface of the diameter-reduced part 52 of the dust collection container 42 , that is, the step 55 , and divides the first separation part 35 and the second separation part 36 . The large-diameter portion 51 , the reduced-diameter portion 52 and the partition portion 81 of the dust collection container 42 partition a fine dust collection chamber 82 in which dust discharged from the second separation chamber 71 is accumulated.

The outer diameter of the partition portion 81 is smaller than the outer diameter of the second separating portion 36 and larger than the outer diameter of the inner cylindrical portion 43 and the outer diameter of the dust trapping cup 45 .

When the second separating portion 36 is attached to the dust collecting container 42 , the partitioning portion 81 has a partitioning body 85 close to the inner surface of the dust collecting container 42 , and when the second separating portion 36 is attached to the dust collecting container 42 . , and a sealing portion 86 that is in contact with the inner peripheral surface of the dust collecting container 42 and seals between the fine dust collecting chamber 82 and the first separation chamber 41 .

Furthermore, as shown in FIGS. 2 and 3, the partition part 81 is arranged substantially horizontally when the dust container 42 is in an upright position, and is a dust receiver for receiving fine dust discharged from the second separation part 36. It has a surface 87 . The dust receiving surface 87 is a surface provided on the partition body 85 and faces the disposal port 79 of the second separation chamber 71 right above.

The partition body 85 has a conical shape that slopes down sharply from the upper end portion of the inner cylindrical portion 43 of the first separation portion 35 (the end portion supported by the second separation portion 36 ) toward the bottom portion of the dust collection container 42 . It has a cone-shaped portion 91 and a disk portion 92 that spreads horizontally from the lower end of the cone-shaped portion 91 toward the lower end of the large diameter portion 51 of the dust collection container 42 so as to hit the large diameter portion 51 . ing.

A disc portion 92 of the partition body 85 has a seal holding groove 93 that holds the seal portion 86 . The seal holding groove 93 is annularly provided on the outer peripheral portion of the partition body 85 .

The partition body 85 is provided at a portion closest to the inner peripheral surface of the dust collecting container 42 and has an annular flange portion 94 that slopes downward toward the inner peripheral surface of the dust collecting container 42 . The inner peripheral surface of the dust collection container 42 is a wall surface that defines the space inside the dust collection container 42 closed by the second separating portion 36 . The flange portion 94 is arranged inside the fine dust collecting chamber 82 . That is, the flange portion 94 is provided closer to the second separation portion 36 than the contact portion between the seal portion 86 and the dust container 42 . It is preferable that the flange portion 94 be as close to the dust container 42 as possible within a range in which the partition portion 81 can be attached to and detached from the dust container 42 . The difference between the outer diameter of the flange portion 94 and the inner diameter of the dust container 42 is preferably, for example, 1 mm or less. Moreover, when the negative pressure generated by the electric blower 13 is acting on the separated dust collecting portion 16 , the flange portion 94 may contact the dust collecting container 42 over the entire circumference or a part of the range.

The seal portion 86 is made of flexible and elastic elastomer or rubber, and has a ring shape that fits in the annular seal holding groove 93 . When the second separating portion 36 is attached to the dust collecting container 42 , the sealing portion 86 is sandwiched between the partition body 85 and the dust collecting container 42 to separate the fine dust collecting chamber 82 and the first separating chamber 41 . close up.

The seal portion 86 is arranged inside the outermost edge of the partition body 85 when viewed from the fine dust collection chamber 82 side to the first separation chamber 41 side. In other words, the seal portion 86 is hidden by the partition body 85 when viewed parallel to the center line C of the dust container 42 from the fine dust collection chamber 82 side to the first separation chamber 41 side. That is, the partition body 85 is closer to the inner peripheral surface of the dust collection container 42 than the seal portion 86 when viewed from the fine dust collection chamber 82 side to the first separation chamber 41 side. In addition, the seal portion 86 contacts the inner peripheral surface of the diameter-reduced portion 52 of the dust container 42 , that is, the step 55 . In other words, the seat surface (a part of the step 55) with which the seal portion 86 is in contact is circular around the center line C of the dust collection container 42, and viewed from the fine dust collection chamber 82 side to the first separation chamber 41 side, It is arranged inside the outermost periphery of the partition body 85 .

The inner peripheral surface of the reduced-diameter portion 52 and the inner peripheral surface of the large-diameter portion 51 of the dust collection container 42 widen in the direction in which the second separating portion 36 separates. The shape of the inner peripheral surface of the reduced diameter portion 52 and the inner peripheral surface of the large diameter portion 51 improves the ease of pulling out the partition body 85 when removing the second separation portion 36 from the dust collection container 42 .

The separation and dust collection section 16 includes a pair of fixing devices 101 that detachably connect the dust collection container 42 and the second separation section 36 .

The pair of fixing devices 101 are opposed to each other when the separated dust collector 16 is vertically erected on a horizontal plane. Also, the pair of fixing devices 101 are opposed to each other with the center line C of the cylindrical separation dust collector 16 interposed therebetween. A pair of fixing devices 101 have the same structure. Each fixing device 101 includes an operation lever 103 having a claw portion 102 and a groove portion 105 for hooking the claw portion 102 of the operation lever 103 . In this embodiment, the operating lever 103 is provided on the second separation section 36 and the groove section 105 is provided on the dust container 42 . The operating lever 103 may be provided on the dust container 42 and the groove 105 may be provided on the second separation section 36 . That is, one of the operating lever 103 and the groove 105 is provided on the second separation section 36 , and the other of the operating lever 103 and the groove 105 is provided on the dust container 42 .

The operating lever 103 swings between a position where the claw portion 102 is caught in the groove portion 105 and a position where the claw portion 102 is pulled out of the groove portion 105 . Each fixing device 101 includes an elastic member, such as a coil spring, for moving the operating lever 103 so that the claw portion 102 of the operating lever 103 is caught in the groove portion 105 . The second separating section cover 73 includes a lever supporting section that supports the operating lever 103 so as to be able to swing.

A pair of fixing devices 101 are opposed to each other with the center line C of the cylindrical separation dust collector 16 interposed therebetween. Therefore, when separating the second separation portion 36 from the dust container 42, the user must hold the pair of fixing devices 101 with either the left or right hand, that is, with the thumb and index finger of one hand, or with the thumb and middle finger of one hand. By operating the operation lever 103, the connection between the dust container 42 and the second separating portion 36 can be released. Then, when the dust collection container 42 and the second separation section 36 are disconnected with the separation dust collection section 16 standing upright on the horizontal plane, the user operates the respective operation levers 103 of the fixing device 101. The second separation part 36 can be removed from the dust container 42 by moving the second separation part 36 vertically upward while holding the second separation part 36 with one hand. The operating forces acting on the respective operating levers 103 cancel each other out, thereby suppressing shaking of the second separating portion 36 that is separated from the dust container 42 . The user may hold the dust container 42 with either the left or right hand. At this time, the fine dust in the fine dust collecting chamber 82 is carried out of the dust collecting container 42 while remaining on the upper surface of the partition 85 , which is the dust receiving surface 87 . Further, even if fine dust remaining in the second separation chamber 71 falls from the disposal port 79 as the second separation section 36 moves, the dust receiving surface 87 does not allow the dropped fine dust to fall. to capture In particular, in the process of extracting the partitioning portion 81 together with the second separation portion 36 from the large diameter portion 51 of the dust collection container 42 , the partitioning portion 81 may come into contact with the inner peripheral surface of the large diameter portion 51 . When the partition portion 81 touches the inner peripheral surface of the large-diameter portion 51 , an impact load acts on the second separation portion 36 integral with the partition portion 81 , and fine particles remaining in the second separation chamber 71 are removed. Dust may fall from the disposal port 79 . Even in such a case, the separated dust collector 16 catches the dust falling from the disposal port 79 with the dust receiving surface 87 . Then, the user can move the second separation part 36 to a trash can or a garbage bag while holding the second separation part 36 with one hand, and discard fine dust on the partition part 81 .

It should be noted that the pair of fixing devices 101 may not necessarily be operated with one hand as long as they can be handled so that the forces for operating the respective operation levers 103 are substantially balanced.

FIG. 5 is a diagram schematically showing the dust receiving surface of the separating dust collecting portion according to the embodiment of the present invention, taken along line VV of FIG.

As shown in FIG. 5, the dust receiving surface 87 of the separation and dust collection unit 16 according to the present embodiment is located directly below the disposal port 79 (disposal port) for discharging fine dust from the second separation unit 36 to the fine dust collection chamber 82 79) and a first region A on the side close to the inner peripheral surface of the dust collection container .

A second region B directly below the disposal port 79 and farther from the inner peripheral surface of the dust container 42 may or may not hang over the cone-shaped portion 91 of the partition 85 . The second area B is closer to the center line C of the separation dust collecting part 16 than the first area A is.

Most of the area of the upper surface of the partition 85 is a dust receiving surface 87, that is, a substantially horizontal surface when the dust container 42 is in an upright posture. Such a dust receiving surface 87 reliably catches fine dust in the fine dust collection chamber 82 and fine dust falling from the second separation chamber 71 as the second separation section 36 moves.

FIG. 6 is a vertical cross-section of the separated dust collector showing another example of the dust receiving surface according to the embodiment of the present invention.

As shown in FIG. 6, the separated dust collecting portion 16A of the electric vacuum cleaner 1 according to the present embodiment has a downwardly inclined dust receiving surface 87A that approaches the bottom of the dust container 42 as the distance from the inner peripheral surface of the dust container 42 increases. It may be provided with a partition portion 81A having.

The dust receiving surface 87A reliably catches fine dust in the fine dust collection chamber 82 and fine dust falling from the second separation chamber 71 as the second separation unit 36 moves, and the dust receiving surface 87A also receives dust. The captured dust is concentrated toward the center of the dust receiving surface 87A. Therefore, the separated dust collecting portion 16A can prevent the dust trapped on the dust receiving surface 87A from falling from the outer peripheral edge of the partition portion 81A.

As described above, the separated dust collectors 16 and 16A and the electric vacuum cleaner 1 according to the present embodiment are attached to and detached from the dust container 42 together with the second separation unit 36, and the space in the dust container 42 is firstly separated. It is provided with partitions 81 and 81A that divide into a first separation chamber 41 belonging to the separation section 35 and a fine dust collection chamber 82 that collects fine dust discharged from the second separation section 36 . The partitions 81 and 81A prevent fine dust in the fine dust collection chamber 82 and coarse dust in the first separation chamber 41 from mixing. The partition portion 81 has a substantially horizontal dust receiving surface 87, and the partition portion 81A slopes down toward the bottom of the dust container 42 as it separates from the inner peripheral surface of the dust container 42, and is inclined downward toward the bottom of the dust container 42. It has a dust receiving surface 87A that receives fine dust discharged from the separating portion 36. As shown in FIG. Therefore, the separating dust collecting units 16 and 16A and the vacuum cleaner 1 separate the second separating unit 36 from the dust collecting container 42 while the fine dust separated by the second separating unit 36 is placed on the dust receiving surface 87. Fine dust placed on the partitions 81 and 81A can be disposed of in a trash can or a garbage bag. In other words, the separated dust collectors 16 and 16A and the vacuum cleaner 1 according to the present embodiment are finely divided on the outside of the dust collection container 42, like steps that are inclined downward in a conventional vacuum cleaner. It is possible to reduce the risk of dust being scattered, and to reliably put fine dust on the dust receiving surfaces 87 and 87A.

In addition, the separated dust collectors 16 and 16A and the electric vacuum cleaner 1 according to the present embodiment are located directly below the disposal port 79 for discharging fine dust from the second separation unit 36 to the fine dust collection chamber 82 and in the dust collection container 42 . dust receiving surfaces 87, 87A including a first region A on the side closer to the inner peripheral surface of the. Therefore, even if fine dust remaining in the second separation chamber 71 falls from the disposal port 79 as the second separation unit 36 moves, the separated dust collector 16 and the vacuum cleaner 1 , the dust-receiving surfaces 87 and 87A catch the dropped fine dust, thereby reducing the possibility that the fine dust is scattered outside the dust collecting container 42. - 特許庁

Furthermore, the separated dust collectors 16 and 16A and the electric vacuum cleaner 1 according to the present embodiment have the dust receiving surface 87, and when the second separation unit 36 is attached to the dust container 42, the dust container 42 When the partition body 85 close to the inner peripheral surface of the dust collecting container 42 and the second separating part 36 are attached to the dust collecting container 42, the fine dust collecting chamber 82 and the first separating chamber are separated by contacting the inner peripheral surface of the dust collecting container 42. and a seal portion 86 that closes the gap with the 41 . The seal portion 86 is arranged inside the outermost edge of the partition body 85 when viewed from the fine dust collection chamber 82 side to the first separation chamber 41 side, and is a large portion of the wall that partitions the fine dust collection chamber 82 . It is separated from the inner peripheral surface of the diameter portion 51 . Therefore, the separated dust collector 16 and the electric vacuum cleaner 1 prevent fine dust from moving from the dust receiving surface 87 to the seal portion 86 and suppress adhesion of fine dust to the seal portion 86 . If a large amount of fine dust adheres to the seal portion 86, there is a risk that the fine dust adhered to the seal portion 86 will be scattered as the second separation portion 36 moves. 16A and the electric vacuum cleaner 1 can suppress scattering of fine dust adhering to the seal portion 86 .

In addition, the separated dust collectors 16 and 16A and the vacuum cleaner 1 according to the present embodiment are provided with a dust container 42 that expands from a portion in contact with the partition part 81 in a direction in which the second separation part 36 is removed. That is, the dust collection container 42 has a reduced diameter portion 52 and a large diameter portion 51 having an inner peripheral surface that widens in the direction in which the second separating portion 36 is separated. Therefore, the separated dust collectors 16 and 16A and the electric vacuum cleaner 1 function as partition walls that prevent fine dust in the fine dust collection chamber 82 and coarse dust in the first separation chamber 41 from mixing. , when the second separation part 36 is detached from the dust container 42, the partition 81 located inside the dust container 42 can be easily pulled out, and the contact between the dust container 42 and the partition 81 is suppressed. can.

Furthermore, the separated dust collectors 16 and 16A and the electric vacuum cleaner 1 according to this embodiment are provided with a pair of fixing devices 101 that detachably connect the dust container 42 and the second separator 36 . When the dust collection container 42 is placed on a horizontal surface, the pair of fixing devices 101 are opposed to each other when the separated dust collection sections 16 and 16A are viewed in the vertical direction (planar view). Therefore, when separating the second separation portion 36 from the dust container 42, the user operates the operation levers 103 of the pair of fixing devices 101 with the thumb and index finger or the thumb and middle finger of one hand. , the connection between the dust container 42 and the second separating part 36 can be released. Such a separating operation cancels out the operating forces acting on the respective operating levers 103, suppresses the shaking of the second separating portion 36 that is separated from the dust collecting container 42, and moves the separated dust collecting portions 16 and 16A to the horizontal plane. A user can easily pull out the partition part 81 integrated with the second separating part 36 straight up from the dust collecting container 42 while the dust collecting container 42 is placed in an upright position. If the dust collection container 42 and the second separation part 36 are twisted relative to each other like a screw to release the connection, or a mechanism having only one mechanism similar to the fixing device 101 is separated. When applied to the dust collecting portions 16 and 16A, it is difficult to pull the partition portion 81 straight up from the dust collecting container 42 .

Therefore, according to the separated dust collectors 16 and 16A and the electric vacuum cleaner 1 according to the present invention, when the dust accumulated in the separated dust collectors 16 and 16A is discarded, fine dust separated by the second separation unit 36 can be easily prevented from falling off, and dust can be disposed of more cleanly.

While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

DESCRIPTION OF SYMBOLS 1... Electric vacuum cleaner, 2... Vacuum cleaner main body, 3... Extension tube, 5... Suction port body, 11... Handle part, 12... Main body case, 12a... Front part, 12b... Central part, 12c... Rear part, 13... Electric Blower 15 Suction pipe 16, 16A Separation dust collection part 16a Side surface 17 Main body control part 18 Secondary battery 19 Suction port 21 Control circuit board 22 Input part 22a Operation start switch 22b Operation stop switch 25 Exhaust port 31 Inflow port 32 Outflow port 35 First separation section 36 Second separation section 41 First separation chamber 42 Dust collection Container 42a Side wall 42b Open end 42c Bottom wall 43 Inner cylindrical portion 45 Dust trapping cup 47 Dust collection chamber 51 Large diameter portion 52 Reduced diameter portion 53 Small diameter portion , 55... Step, 61... Bone, 62... Frame, 62a... Opening, 63... First mesh filter, 65... Relay air passage, 71... Second separation chamber, 72... Exhaust air passage, 73... Second separation section cover, 75... cylindrical wall, 76... truncated conical wall, 77... inlet, 78... inner cylinder, 79... waste port, 81, 81A... partition, 82... fine dust collection chamber, 85... partition, 86... Seal part 87, 87A... Dust receiving surface 91... Cone-shaped part 92... Disk part 93... Seal holding groove 94... Flange part 101... Fixing device 102... Claw part 103... Operation lever, 105... Grooves.

Claims (6)

a dust collection container;
a first separation unit including the dust container as an outer shell and separating coarse dust contained in the air introduced into the dust container;
a second separation unit detachably attached to the dust collection container and separating fine dust contained in the air passing through the first separation unit;
It has a dust receiving surface which is substantially horizontal or inclined downward toward the bottom of the dust collecting container as it separates from the inner peripheral surface of the dust collecting container and receives the fine dust discharged from the second separation section. and a first space belonging to the first separation section and a second space in the dust collection container that is attached to and detached from the dust collection container together with the second separation section and stores the fine dust discharged from the second separation section. a partition part that divides the space into two spaces to prevent mixing of the fine dust in the second space and the coarse dust in the first space. 2. According to claim 1, wherein the dust receiving surface includes an area directly below an opening for discharging the fine dust from the second separating portion to the second space and close to the inner peripheral surface of the dust collecting container. A dust collector as described. The partition part is
a partition body having the dust receiving surface and being in proximity to the inner peripheral surface of the dust collection container when the second separation portion is attached to the dust collection container;
a seal portion that contacts the inner peripheral surface of the dust container and closes the space between the second space and the first space when the second separation portion is attached to the dust container;
The dust collector according to claim 1 or 2, wherein the seal portion is arranged inside the outermost edge of the partition when viewed from the second space side to the first space side. 4. The dust collector according to any one of claims 1 to 3, wherein the dust collection container expands in a direction in which the second separation section is separated from a portion in contact with the partition section. A pair of fixing devices for detachably connecting the dust collection container and the second separation unit,
When the dust collection container is placed on a horizontal surface, the second separation part can be separated from the dust collection container substantially vertically upward,
The dust collector according to any one of claims 1 to 4, wherein the pair of fixing devices face each other when the dust collector is viewed in the vertical direction. an electric blower that generates negative pressure;
and the dust collector according to any one of claims 1 to 5, which is fluidly connected to the electric blower.

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