WO2011111342A1

WO2011111342A1 - Cyclone dust collector and electric cleaner with same

Info

Publication number: WO2011111342A1
Application number: PCT/JP2011/001242
Authority: WO
Inventors: 勝之太田; 泉山浦
Original assignee: パナソニック株式会社
Priority date: 2010-03-12
Filing date: 2011-03-03
Publication date: 2011-09-15
Also published as: JP2011188910A

Abstract

A cyclone dust collector provided with: an inlet for allowing a dust containing air flow, which swirls in a swirl chamber, to flow therethrough into a dust collection chamber; an outlet for allowing the air flow, which swirls in the dust collection chamber, to flow therethrogh again into the swirl chamber; an air discharge tube for discharging the air from which the dust has been separated; a swirl path defined by the outer shell inner wall surface of the swirl chamber and the air discharge tube; a partition wall provided within the swirl chamber and connecting the inner opening edge of the inlet and the inner opening edge of the outlet; a transfer path provided between the outer shell inner wall surface of the swirl chamber and the partition wall; and an air flow section provided at the outer peripheral surface of the air discharge tube and allowing the air, from which the dust has been separated, to pass therethrough. The dust collection chamber is provided so that a part thereof is superposed on the swirl chamber. The configuration enables the dust containing air to smoothly flow from the air discharge tube to the dust collection chamber.

Description

Cyclone dust collector and electric vacuum cleaner provided with the same

The present invention relates to a cyclone dust collector of a vacuum cleaner.

In recent years, so-called cyclonic vacuum cleaners that remove and separate dust from airflow by centrifugal force have been attracting attention. In this type of vacuum cleaner, the dust collection case has a swirling chamber that generates a swirling airflow and a dust collecting chamber that is separated by a section that communicates with the swirling chamber. And the structure which moves dust and accumulates in a dust collection chamber is disclosed by turning the air containing dust which flowed into the dust collection case (henceforth dust-containing air) in a swirl chamber (patent document) 1 and Patent Document 2).

The vacuum cleaner described in Patent Document 1 communicated with the swirl chamber, the dust collection chamber having the introduction portion communicated with the swirl chamber, the first end communicated with the dust collection chamber, and the inside of the swirl chamber. An air return duct having a second end is provided. Then, the introduction part of the dust collecting chamber and the second end of the air return duct are arranged apart from each other, and the second end is arranged so that air from which dust is separated at an acute angle with respect to the swirling airflow direction in the swirling chamber flows. Configure. In this case, due to the introduction part from the swirl chamber to the dust collection chamber and the long piping of the air return duct, the dust collection chamber cannot be made sufficiently negative pressure. Therefore, the flow rate of dust-containing air from the swirl chamber to the dust collection chamber decreases, and the dust in the dust-containing air cannot be transported smoothly. In addition, since the series of paths from the swirl chamber to the introduction part, dust collection chamber, air return duct, and swirl chamber are bent, the dust-containing air flow is disturbed and the flow path pressure loss causes dust collection from the swirl chamber. Dust of dust-containing air cannot be transferred efficiently to the room. If this dust transfer cannot be performed reliably, the dust-containing air continues to swirl in the swirl chamber, so that the separation between the dust-containing air and the dust decreases.

Moreover, the vacuum cleaner described in Patent Document 2 is adjacent to the swirl chamber, the intake port formed in the tangential direction of the swirl chamber, the exhaust port provided in the bottom center portion of the swirl chamber, and the side surface of the swirl chamber And a communication hole for communicating the swirl chamber and the dust collection chamber. The communication hole is provided on the side of the swirl chamber at the same position as the intake port, and has an outlet that flows into the dust collection chamber from the upstream side of the swirl chamber and an inlet that returns from the dust collection chamber to the swirl chamber on the downstream side of the swirl chamber. Have.

However, in the vacuum cleaner of Patent Document 2, the opening height of the intake port, the height of the swirl chamber, and the opening height of the communication hole (inlet / outlet) to the dust collection chamber are almost the same height. Turbulence is generated when dust-bearing air flowing in from the air inlet and air separated from the dust collecting chamber returning to the swirl chamber collide at the communication hole. For this reason, turbulent flow occurs, and in the vicinity of the collision between the dust-containing air and the air from which the dust is separated, the dust-containing air flows toward the exhaust port, and the dust in the dust-containing air that still swirls in the swirl chamber is exhausted as it is. Flowed to the mouth side. As a result, the separability between the dust-containing air and the dust decreases.

In addition, since the air inlet and the communication hole to the dust collection chamber are provided at the same height, a horizontal component of the air current strongly enters the dust collection chamber from the swirl chamber. Then, the dust-containing air that has entered the dust collection chamber goes directly to the inlet on the swirl chamber side. Therefore, minute dust in the dust-containing air is not separated from the air and does not fall to the bottom of the dust collection chamber, and returns to the swirl chamber as it is from the inlet of the communication hole. Furthermore, in another embodiment, the dust collection chamber discloses a shape in which the cylindrical shape of the swirl chamber bites in the vicinity of the communication hole. For this reason, in the vicinity of the inlet from the dust collection chamber to the swirl chamber side, the dust is not separated from the dust-containing air by the swirling of the dust-containing air, but acts in the direction in which the dust-containing air flows to the swirl chamber side. . As a result, the amount of dust-containing air that flows back to the swirl chamber increases, and as a result, the separation of the dust-containing air and dust decreases.

Special table 2003-517908 gazette Japanese Patent No. 4310954

The cyclone dust collector of the present invention is a cyclone dust collector provided with a dust collecting case provided with a swirling chamber that swirls air containing dust and separates dust, and a dust collecting chamber that collects dust below the swirling chamber. The dust-containing air flow swirling in the swirl chamber flows along the inner wall surface of the swirl chamber and flows into the dust collection chamber, and the air flow swirling in the dust chamber moves along the inner wall surface of the dust collection chamber. However, the outlet that re-enters the swirl chamber, the exhaust pipe that discharges air separated from the dust provided in the swirl chamber, the swirl passage that is defined by the outer wall of the swirl chamber and the exhaust pipe, and the swirl chamber A partition wall that connects the inner opening edge of the inlet and the inner opening edge of the outlet, a transfer passage provided between the outer wall of the swirl chamber and the partition wall, and an outer peripheral surface of the exhaust pipe And a ventilation part through which air separated from dust passes, and a part of the dust collection chamber overlaps the swirl chamber.

As a result, the dust-containing air flowing in from the intake port swirls in the swirl passage defined by the inner wall of the swirl chamber outer wall and the exhaust tube, and the transfer passage defined by the inner wall of the swirl chamber outer wall and the arc-shaped partition wall. However, the dust-containing air can be smoothly passed to the adjacent dust collection chambers.

FIG. 1 is a cross-sectional view showing a configuration of the electric vacuum cleaner according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of the cyclone dust collector in the same embodiment. FIG. 3 is a longitudinal sectional view of the cyclone dust collector taken along line 3-3 in FIG. 4 is a cross-sectional view of the cyclone dust collector taken along line 4-4 of FIG. FIG. 5 is a cross-sectional view of the cyclone dust collector taken along line 5-5 in FIG. FIG. 6 is a cross-sectional view showing another example of the arrangement of the swirl chamber and the dust collection chamber in the same embodiment. FIG. 7 is a view showing a state of swirling of the dust-containing air in the same embodiment. FIG. 8 is a partial perspective view of a turning path in the same embodiment. FIG. 9 is a partial configuration perspective view showing the operation of each component when the latch is released in the same embodiment. FIG. 10 is a partial configuration perspective view showing the operation of each component when the latch is not released in the same embodiment. FIG. 11 is a longitudinal sectional view of the cyclone dust collector taken along line 11-11 in FIG. 2 showing a state where the compression plate is lowered in the same embodiment. 12 is a longitudinal sectional view of the cyclone dust collecting apparatus taken along line 12-12 of FIG. 2 showing a state where dust is compressed in the same embodiment. 13 is a longitudinal sectional view of the cyclone dust collecting apparatus taken along line 13-13 in FIG. 2, showing a state when dust is discarded in the same embodiment. 14 is a longitudinal sectional view of the cyclone dust collecting apparatus taken along line 14-14 of FIG. 2 showing a state when the dust is full in the embodiment. FIG. 15 is an enlarged view of a portion A in FIG. 16 is a longitudinal sectional view taken along line 16-16 of FIG. 3 of the cyclone dust collecting apparatus according to Embodiment 2 of the present invention. FIG. 17 is an enlarged view of a portion B in FIG. FIG. 18 is a partial cross-sectional view of the compression device according to Embodiment 3 of the present invention.

Hereinafter, a cyclone cleaner according to an embodiment of the present invention will be described with reference to the drawings. In addition, the following description is a specific example of this invention, Comprising: This invention is not limited. In the following description, the left side of the figure (for example, the suction electric blower side) is the front side, the front part, the front side or the upstream side, and the right side (for example, the exhaust port side) is the rear side, the rear part, the rear side or the downstream side. In some cases, the upper side of the figure or the upper side of the figure is expressed as the upper surface side, the upper part, the upper side, or the most downstream side.

(Embodiment 1)
FIG. 1 is a cross-sectional view showing a configuration of the electric vacuum cleaner according to Embodiment 1 of the present invention.

As shown in FIG. 1, the vacuum cleaner main body 100 includes at least a cyclone dust collector 50, an electric blower 51, and a suction port 52. A cyclone dust collector 50 is detachably installed on the upstream side of the electric blower 51, and a suction port 52 is provided on the upstream side of the cyclone dust collector 50. Then, a suction force is generated by the electric blower 51, and air containing dust is sucked from the suction port 52.

Hereinafter, the configuration of the cyclone dust collector 50 will be described.

FIG. 2 is a perspective view of the cyclone dust collector in Embodiment 1 of the present invention. FIG. 3 is a longitudinal sectional view of the cyclone dust collector taken along line 3-3 in FIG.

As shown in FIG. 2, the cyclone dust collecting device 50 is a first dust separation unit that has a swirl chamber 1 that swirls air containing dust and separates dust and a dust collection chamber 2 that collects dust. Dust collection case 3 (hereinafter referred to as dust collection case 3) and a second dust collection case 4. The second dust collection case 4 disposed at the upper part of the dust collection case 3 has a second dust separation part 16 and is connected to the cleaner body 100.

As shown in FIG. 3, the swirl chamber 1 has an intake port 5 and an exhaust cylinder 6 having a substantially cylindrical shape (including a cylindrical shape) communicating with the second dust collecting case 4. The intake port 5 is provided in a tangential direction with respect to the outer peripheral inner peripheral surface of the substantially cylindrical shape (including the cylindrical shape) of the swirl chamber 1. The exhaust tube 6 is provided at the approximate center (including the center) of the swirl chamber 1. Thereby, the dust-containing air flowing in from the intake port 5 swirls along the inner wall surface of the outer wall of the swirl chamber 1 and flows.

On the outer peripheral side surface of the exhaust tube 6, for example, a ventilation portion 7 made of a filtration filter such as a mesh filter or an etching filter is provided so that coarse dust such as paper waste does not pass to the second dust collection case 4 side. The inner space of the exhaust tube 6 communicates with the second dust collection case 4, and the dust-containing air that has passed through the ventilation portion 7 of the exhaust tube 6 flows into the second dust collection case 4.

In the second dust collecting case 4, a second dust separating unit 16 made of a non-woven filter folded in a pleat shape is provided. Thereby, the fine fine dust which has come off from the exhaust pipe 6 is filtered by the second dust separation unit 16 and only air is allowed to pass through.

Below the exhaust cylinder 6, there are an arc-shaped partition wall 12, and a fine dust chamber 17 that communicates with the inside of the arc-shaped partition wall 12 below the swirl chamber 1 and is disposed adjacent to the dust collection chamber 2. Is provided. The bottom of the fine dust chamber 17 and the bottom of the dust collection chamber 2 are opened and simultaneously opened and closed by a bottom lid 14 that is pivotally supported. With this configuration, the hermeticity in the dust collection chamber 2 is secured.

The dust collecting chamber 2 provided in the lower part of the swirl chamber 1 is provided with a vent 11, and a vent lattice 13 having a lattice opening set to a predetermined size is formed in the vent 11. The size of the opening of the ventilation grid 13 is preferably 1 mm to 2 mm, which can be formed by resin integral molding, for example. In other words, if the opening is set at 2 mm, lint is caught on the ventilation grid 13 and the passage to the swirl chamber side 1 can be significantly suppressed. When the opening is set to 3 mm or more, there is a high possibility that fine dust such as lint will pass through the swirl chamber side 1 without being caught by the ventilation grid 13. Also, if the opening is set to be smaller than 1 mm, it becomes difficult to create by resin integral molding.

The configuration and positional relationship of the swirl chamber 1 and the dust collection chamber 2 described above will be described below using each cross-sectional view.

FIG. 4 is a cross-sectional view of the cyclone dust collector taken along line 4-4 of FIG. FIG. 5 is a cross-sectional view of the cyclone dust collector taken along line 5-5 in FIG.

As shown in FIG. 5, the dust collection chamber 2 is a substantially cylindrical (including a cylindrical shape) cylindrical body having an inner diameter that is substantially the same as or slightly smaller than the inner diameter of the swirl chamber 1. In the lower part of the swirl chamber 1, the dust collection chamber 2 is arranged at a position where the central axis of the cylinder is shifted in parallel to the swirl chamber 1 in the horizontal direction, and the upper end of the dust collection chamber 2 in the vertical direction. Is disposed so as to overlap with the inside of the swirl chamber 1.

That is, in the portion where the swirl chamber 1 and the dust collection chamber 2 overlap, for example, as shown in FIG. 5, the swirl chamber 1 side has a concave shape, and the dust collection chamber 2 side has a substantially arc shape (including an arc shape). A partition wall 8 is provided.

The outer inner wall surface of the swirl chamber 1 and the outer inner wall surface of the dust collecting chamber 2 are connected to each other, and are connected by a linear wall 9 provided so that the inner circumferential circles are in contact with each other. Then, the inlet 10 and the flow path serving as a communication port are provided between the

side surface portions

8a and 8b of the partition wall 8 and the

outer shell portions

8c and 8d at positions where the outer shell surface of the swirl chamber 1 and the outer shell surface of the dust collecting chamber 2 intersect. An outlet 11 is provided.

The inlet 10 is an inlet through which dust-containing air swirling in the swirling chamber 1 flows into the dust collecting chamber 2. And the outflow port 11 is an outflow port of the air which isolate | separated the dust which returns to the swirl chamber 1 from the dust collection chamber 2. FIG. Here, the inflow port 10 is provided on the wall 9 side.

Further, the side surfaces 8a and 8b of the partition wall 8 are connected by an arcuate partition wall 12. At this time, as shown in FIG. 4, the arc of the arcuate partition wall 12 coincides with the arc of the upper exhaust cylinder 6, and the exhaust cylinder 6 and the arcuate partition wall 12 are connected. Yes.

As shown in FIGS. 4 and 5, between the exhaust pipe 6 and the arc-shaped partition wall 12 and the inner peripheral wall of the outer wall of the swirl chamber 1, there is an inlet port from the intake port 5 to the dust collection chamber 2. A turning passage 15a that is directed and a transfer passage 15b that is continuous with the turning passage 15a are formed. Thereby, the dust-containing air can be smoothly guided from the swirl chamber 1 to the dust collection chamber 2.

As described above, the swirl chamber 1 and the dust collection chamber 2 are arranged so as to be shifted in parallel so as to be in an oblique vertical relationship, and the inlet and the flow between the swirl chamber 1 and the dust collection chamber 2 are arranged. An exit is provided so as to draw an elliptical orbit. As a result, the dust-containing air has an obliquely lower component, so that the flow rate of the dust-containing air from the swirling chamber to the dust-collecting chamber does not decrease, and the dust in the dust-containing air can be transported smoothly and collected. The dust case 3 can be downsized.

In the present embodiment, in order to reduce the size of the dust collection case 3, the swirl chamber 1 and the dust collection chamber 2 have been described in an arrangement configuration in which a part of each other overlaps in the horizontal direction. It may be configured. FIG. 6 is a cross-sectional view showing another example of the arrangement of the swirl chamber and the dust collection chamber in the same embodiment.

As shown in FIG. 6, the swirl chamber 1 and the dust collection chamber 2 are provided adjacent to each other so as not to overlap in the horizontal direction. As a result, the same actions and effects as described above can be obtained, and when air containing fine dust such as lint has escaped from the outlet 11 of the dust collecting chamber 2, it collides with the airflow flowing to the inlet 10. Thus, only dust is attracted to the dust collection chamber 2.

The flow of the dust-containing air of the cyclone dust collector 50 configured as described above will be described below with reference to FIGS.

FIG. 7 is a view showing a state of swirling of the dust-containing air in the same embodiment. FIG. 8 is a partial perspective view of a turning path in the same embodiment.

As shown in FIGS. 7 and 8, the positions of the air inlet 5 of the swirl chamber 1, the vent 7 of the exhaust pipe 6, and the inlet 10 and the outlet 11 where the swirl chamber 1 and the dust collecting chamber 2 communicate with each other are as follows: The height positions (positions in the vertical direction) are shifted in the order described above. As a result, the dust-containing air flowing in from the intake port 5 is swung along the outer wall of the swirl chamber 1 obliquely below the intake port 5 as shown by the arrows in FIG. And enter the inlet 10.

Then, the dust-containing air that has entered the inlet 10 flows to the bottom of the dust collecting chamber 2 while turning in the dust collecting chamber 2 obliquely downward. At this time, the heavy coarse dust in the dust-containing air continues to rotate as it is at the bottom of the dust collection chamber 2.

At this time, in the dust collection chamber 2, the coarse dust turns while being entangled at the bottom due to its weight, and becomes, for example, marimo. And fine dust entangles with coarse dust together. Thereby, coarse dust and fine dust are entangled, and dust and air are separated.

Then, the dust-containing air from which the coarse dust has been separated rises in the dust collection chamber 2 while swirling. At this time, fine dust such as lint riding on the rising air current is caught on the ventilation grid 13 of the outlet 11. Then, the air containing finer dust that has passed through the ventilation grid 13 returns to the swirl chamber 1, and swirls in the swirl chamber 1, passing through the ventilation portion 7 of the exhaust tube 6 and into the second dust collecting case 4. Circulate.

At this time, fine dust such as lint caught on the ventilation grid 13 plays a role of a filter when it accumulates on the ventilation grid 13 and can further suppress the passage of fine dust to the swirl chamber 1 side. That is, the accumulated lint performs the same function as the nonwoven fabric filter of the second dust separation unit 16.

Thereafter, the air containing fine dust that has passed through the exhaust pipe 6 flows to the second dust collecting case 4. The fine fine dust that has passed through the exhaust pipe 6 is filtered by the nonwoven fabric filter of the second dust separation section 16, and only the air passes through the nonwoven fabric filter of the second dust separation section 16, and the electric blower shown in FIG. 51.

A dust removing unit 70 that vibrates the filter surface is attached to the downstream side of the second dust separating unit 16. Then, after the suction operation, the surface of the nonwoven fabric filter is struck by the dust removing portion 70 by a reciprocating motion by a linear drive portion (not shown) built in the second dust collecting case 4 connected to the dust removing portion 70, and the nonwoven fabric filter The fine dust adhering to the surface of the is dropped by vibration.

The fine dust that has been knocked down passes through the exhaust pipe 6 and the inner space of the arc-shaped partition wall 12 to the fine dust chamber 17 provided below the swirl chamber 1 and communicating with the inner side of the arc-shaped partition wall 12. Accumulate.

Next, the configuration and operation of the compression device of the cyclone dust collector 50 will be described below.

As shown in FIG. 3, the compression device is composed of at least a compression plate 18, a lifting shaft 19, and a movable shaft 23. And the compression board 18 has arrange | positioned the compression board 18 which raises / lowers the inside of the dust collection chamber 2 arrange | positioned by making the bottom face into a plane at the upper end of the dust collection chamber 2. As shown in FIG. A lifting shaft 19 is attached to a position shifted to the opposite side of the swirl chamber 1 with respect to the center of the compression plate 18. A fixed shaft pin 21 having a stopper 22 provided at the lower end is inserted into the hollow portion 20 inside the lifting shaft 19, and the stopper 22 is configured to stop at the upper end of the lifting shaft 19.

The upper end of the fixed shaft pin 21 is fixed to the upper end in the hollow of the movable shaft 23 by, for example, a screw. A first compression spring 24 is provided between the upper end of the elevating shaft 19 and the upper end in the hollow of the movable shaft 23. A fixed shaft pin 21 is disposed at the center of the first compression spring 24. With this configuration, the compression plate 18 is held to be movable with respect to the movable shaft 23 via the first compression spring 24.

The elevating shaft 19 is slidably held by a fixed shaft pin 21 and a bearing 25 provided at the upper end of the dust collecting chamber 2. When the compression plate 18 is compressed, the elevating shaft 19 is accommodated in the hollow of the movable shaft 23.

The movable shaft 23 is slidably held by a sliding holding portion 26 provided adjacent to the swirl chamber 1. The movable shaft 23 is pushed up by a second compression spring 27 provided between the movable shaft 23 and the bearing 25 on the upper surface of the dust collection chamber 2. Thereby, the compression plate 18 is pushed up to the position of the upper end of the dust collecting chamber 2 and held.

Further, an operation lever 28 is provided on the upper side surface of the movable shaft 23. When the operation lever 28 is pressed, the movable shaft 23 is lowered, and the compression plate 18 held in a telescopic manner via the first compression spring 24 is simultaneously pushed down with respect to the movable shaft 23. The sliding holder 26 is provided with a spring-biased rotary latch 29, and a recess 30 is formed in a part of the upper periphery of the movable shaft 23. When the concave portion 30 of the movable shaft 23 is pushed down to the position of the latch 29 by the operation lever 28, the latch 29 fits into the concave portion 30 and is locked.

Hereinafter, the configuration and operation of the latch 29 will be described.

FIG. 9 is a partial configuration perspective view showing the operation of each component when the latch is released in the same embodiment. FIG. 10 is a partial configuration perspective view showing the operation of each component when the latch is not released in the same embodiment.

As shown in FIG. 9, a first ratchet 31 that is pivotally supported coaxially with the latch 29 and a second ratchet 32 that engages with the first ratchet 31 are arranged in parallel on the latch 29 that is the lock portion. A first transmission gear 33 is provided at one end of the second ratchet 32. The first transmission gear 33 is engaged with a second transmission gear 53 that is interlocked with the rotation of the power cord reel unit 54 built in the cleaner body 100 side. Accordingly, the first transmission gear 33 rotates when the power cord is pulled out and wound.

A protruding portion 34 is provided at one end of the first ratchet 31 so as to contact the latch 29 in the direction of releasing. When the latch 29 is locked and the first transmission gear 33 is rotated in the direction in which the power cord is pulled out, as shown by the arrow in FIG. 9, the second ratchet 32 causes the first ratchet 31 to move. The latch 29 is rotated in the release direction, and the latch 29 is unlocked.

Conversely, when the first transmission gear 33 is rotated in the direction in which the power cord is wound in a state where the latch 29 is locked, the rotation of the second ratchet 32 is as shown in the arrow of FIG. The one ratchet 31 is rotated in a direction not to contact the latch 29. As a result, at the time of winding the power cord, the latch 29 is not released from the recess 30 of the first transmission gear 33 and the lock is not released.

In the state where the latch 29 is not locked, the latch 29 rotates so that the projecting portion 34 does not contact the latch 29 in the rotation range of the first ratchet 31. For this reason, the latch 29 does not operate in conjunction with the drawing and winding operations of the power cord.

The compression plate 18 that compresses dust is operated by the above configuration.

Hereinafter, the configuration of the compression plate 18 will be described.

As shown in FIG. 3, in a state where the compression plate 18 is housed in the upper end of the dust collection chamber 2, the bottom surface of the compression plate 18 has the inlet 10 and the outlet 11 to the dust collection chamber 2 shown in FIG. 5. It arrange | positions so that it may correspond to an upper edge or may be located above an upper edge. For this reason, the swirling airflow that has entered from the inflow port 10 divides upward and downward and does not turn, and the airflow including dust does not continue to swirl around the compression plate 18. As a result, dust or the like does not get caught in a gap or the like generated at the outer peripheral edge of the compression plate 18, and the compression plate such as the biting of dust between the outer peripheral edge of the compression plate 18 and the inner wall of the outer wall of the dust collecting chamber 2. There is no fear of disturbing the operation of 18.

The upper surface of the compression plate 18 is configured in a substantially conical shape (including a conical shape), and a tight packing 35 having a lip configuration disposed on the outer periphery of the upper end of the dust collecting chamber 2 and the outer peripheral edge of the compression plate 18 are provided. Ensuring airtightness. In the state in which the compression plate 18 is stored, the bottom surface of the compression plate 18 and the lip portion of the tight packing 35 constitute the top surface of the dust collection chamber 2. For this reason, even when dust is applied to the upper surface from the outer peripheral edge of the compression plate 18 when pressing the dust, the dust is compressed by the substantially conical surface (including the conical surface) when the compression plate 18 is raised. Slide down to the outer periphery of the plate 18. After that, it rides down to the lower side of the compression plate 18 by friction with the inner wall of the outer wall of the dust collecting chamber 2 and falls toward the bottom of the dust collecting chamber 2 as it is. For this reason, it is possible to prevent dust from entering the sliding receiving portion and the like above the compression plate 18. At this time, the gap between the outer peripheral edge of the compression plate 18 and the inner wall of the dust collecting chamber 2 is preferably set to 2 to 5 mm.

The reason is that, for example, when the clearance between the outer peripheral edge and the inner wall of the dust collecting chamber 2 is set to 1 mm, the dust tends to bite between the inner wall of the dust collecting chamber 2 when the compression plate 18 is raised and lowered. On the other hand, when the gap between the outer peripheral edge and the inner wall of the dust collecting chamber 2 is set to 10 mm, for example, the dust can be prevented from entering, but when the compression plate 18 presses the dust, the dust is pushed out from the gap. That is, the pressing force from the side surface of the compression plate 18 does not sufficiently act on the dust. As a result, when the compression plate 18 is raised, dust, for example, cotton dust hair, returns to its original size due to the repulsive force, so that the volume of the dust cannot be reduced sufficiently.

Specifically, as a result of experimental verification, for example, when the gap was set to about 3 mm, there was almost no risk of dust entrapment. Furthermore, the dust volume can be reduced by applying a sufficient pressing force from the side surface of the compression plate 18. If the gap between the outer peripheral edge and the inner wall of the dust collecting chamber 2 was set in the range of 2 to 5 mm, the same effect as described above was obtained.

Hereinafter, the operation of the compression plate 18 will be described with reference to FIGS.

FIG. 11 is a longitudinal sectional view of the cyclone dust collector taken along line 11-11 in FIG. 2 showing a state in which the compression plate in the embodiment is lowered. FIG. 11 shows a state where the compression plate 18 is lowered and is in contact with the bottom lid 14. 12 is a longitudinal sectional view of the cyclone dust collecting apparatus taken along line 12-12 of FIG. 2 showing a state where dust is compressed in the same embodiment.

That is, as described with reference to FIG. 7, the cyclone dust collecting device 50 first introduces the dust-containing air taken in from the intake port 5 into the dust collecting chamber 2 through the centrifugal inlet 1 through the swirl chamber 1 and then introduced into the dust collecting chamber 2. Then, dust is collected in the dust collecting chamber 2. Thereafter, the accumulated dust is compressed by pushing the operation lever 28 and pushing down the movable shaft 23 and the compression plate 18 to a position where the latch 29 of the movable shaft 23 is engaged.

At this time, as shown in FIG. 12, dust such as lint adhering to the ventilation grid 13 provided at the outlet 11 of the dust collection chamber 2 is peeled off by the lowering of the compression plate 18, and is moved to the bottom of the dust collection chamber 2. drop down. For this reason, the opening part of the ventilation grid 13 is not clogged. Then, as the bottom surface of the compression plate 18 compresses the coarse dust accumulated at the bottom of the dust collecting chamber 2, the lifting shaft 19 of the compression plate 18 slides in the movable shaft 23 according to the repulsive force of the compressed dust 60. Then, the compression plate 18 is lifted. At this time, the stroke of the compression plate 18 lifted, that is, the spring pressure corresponding to the compression of the first compression spring 24 becomes the pressing force of the compressed dust 60.

Then, the pressing force through the first compression spring 24 is applied to the compressed dust 60 until the next cleaning is started. Thereby, creep deformation is caused to occur in fiber components such as cotton dust dust and hair in the dust, and the repulsive force is reduced. As a result, by further reducing the volume of the dust, the density of the dust can be improved and solidification can be achieved.

Further, if the dust is compressed in the dust collection chamber 2 for, for example, about half a day or more, the compressed dust 60 is also subjected to frictional resistance from the inner wall of the dust collection chamber 2, so the amount of restoration in the dust collection chamber 2 is Slightly. Thereby, the volume of the compressed dust 60 can be reduced to about 1/4 or less of the volume of the dust before being compressed.

Furthermore, by setting the clearance between the outer wall of the outer wall of the dust collection chamber 2 and the compression plate 18 to 2 to 5 mm, the above-mentioned volume reduction can be achieved by sufficiently pressing almost the entire dust even when compressed for several hours. An effect equivalent to the ratio can be obtained.

The compression plate 18 pulls out the power cord for the next cleaning, so that the latch 29 is released in conjunction with the rotational operation of the power cord reel unit, and is collected by the repulsive force of the second compression spring 27. It returns to the position of the upper end of the dust chamber 2. That is, the up-and-down operation of the compression plate 18 is only a push-down operation at the time of dust compression, so that the burden on the user of the compression operation can be reduced.

Also, normally, when starting the next cleaning, since the operation of pulling out the power cord is always performed, the possibility of starting operation with the compression plate 18 kept depressed is low. If cleaning is to be started without pulling out the power cord, a configuration in which the power is not turned on or a configuration for alarming may be provided. In this case, since the power cord is not pulled out, the latch 29 is not released.

Hereinafter, the cyclone dust collector 50 will be specifically described with reference to examples.

Usually, if the outer diameter of the dust collection chamber 2 is set to 80 to 90 mm, for example, and the container height of the dust collection chamber 2 is set to about 65 mm, it is possible to collect a dust amount corresponding to one week. However, if the outer diameter of the dust collection chamber 2 is made too large, the pressure from around the dust is not balanced, and it acts in the direction of releasing the stress by pushing up the vicinity of the center of the dust, so the balance of compression is lost. Furthermore, if the outer diameter of the dust collection chamber 2 is increased, the effect of the centrifugal swirl airflow may be impaired. Therefore, the outer diameter of the dust collection chamber 2 is set to such an extent that the effect of the centrifugal swirl airflow is not impaired.

Using the size of the dust collection chamber 2 above, about one week of dust cleaned in a general household was compressed and confirmed. As a result, the height of the dust discharged from the dust collection chamber 2 was reduced to about 30 to 35 mm. It was solid in a state that did not occur and collapsed.

And the dust 60 compressed to the bottom of the dust collection chamber 2 by the dust compression does not cause a negative pressure difference during the next suction operation. That is, since the dust remains at the bottom, the dust-containing air that has reached the bottom of the dust collection chamber 2 by riding the next swirling airflow is entangled with the surface of the compressed dust 60. As a result, the dust is more likely to accumulate at the bottom of the dust collection chamber 2, so that coarse dust and air in the dust-containing air are further separated.

Also, as the accumulated dust increases, the stroke in the hollow of the movable shaft 23 of the elevating shaft 19 of the compression plate 18 that presses the dust decreases. Accordingly, as the amount of dust increases, the compressive force received from the first compression spring 24 of the dust increases, so that the dust can be more compacted.

Next, the operation when the dust on the compression plate 18 is discarded will be described.

FIG. 13 is a longitudinal sectional view of the cyclone dust collecting apparatus taken along line 13-13 in FIG. 2 showing a state when dust is discarded in the same embodiment.

As shown in FIG. 13, when the bottom cover 14 is opened when the dust is thrown away, the compression plate 18 receives the reaction force of the first compression spring 24 and pushes out the compressed dust 60. Therefore, dust does not stay in the dust collection chamber 2.

At this time, the compression plate 18 is configured so as to protrude, for example, about 10 mm downward from the opening at the bottom of the dust collection chamber 2, and therefore, between the outer peripheral edge of the compression plate 18 and the inner wall of the dust collection chamber 2. It is possible to prevent the dust from being caught due to the biting of the dust. Thereby, the performance at the time of throwing away dust improves.

Next, the operation when the dust collecting chamber 2 is filled with dust will be described.

FIG. 14 is a longitudinal sectional view of the cyclone dust collecting apparatus taken along the line 14-14 in FIG. 2, showing a state when the dust is full in the embodiment. FIG. 15 is an enlarged view of a portion A in FIG.

As shown in FIGS. 14 and 15, in the compression operation, the elevating shaft 19 and the movable shaft 23 of the compression plate 18 are configured to be movable separately, and the operation stroke of the movable shaft 23 is constant. Then, the movable stroke of the elevating shaft 19 is set smaller than the operating stroke of the movable shaft 23 in accordance with the allowable amount of dust collection. Thereby, if the upper end of the raising / lowering shaft 19 is brought into contact with the upper end of the movable shaft 23 and the movable shaft 23 is not locked, it can be detected that the dust collecting allowable amount is exceeded. As a result, it is possible to notify the user when the dust is full with a simple configuration without adding another component such as a sensor.

According to the present embodiment, the dust collection chamber 2 is configured to enter the swirl chamber 1, and the fixed position of the lifting shaft 19 of the compression plate 18 is shifted from the center. Thereby, size reduction of the dust collection case 3 can be achieved.

In addition, according to the present embodiment, the cyclone dust collection in which the degree of dust compression is improved while reducing the size of the dust collection case 3 without exposing the compression plate 18 and the lifting and lowering operation portion in the swirling airflow. A device can be realized.

Also, by compacting and compacting the diameter of the dust, it is possible to greatly reduce the rising of the dust when the dust is thrown away, and it can be thrown away as it is, for example, in a trash can. Further, since the dust is compressed in the dust collection chamber 2, the dust in the dust collection chamber 2 does not fly by the swirling airflow during the next suction operation, and the separation between the air in the dust-containing air and the dust is possible. Can be further improved.

(Embodiment 2)
16 is a longitudinal sectional view taken along line 16-16 of FIG. 3 of the cyclone dust collecting apparatus according to Embodiment 2 of the present invention. 3 is a sectional view, FIG. 16 is a longitudinal sectional view of the entire configuration of the cyclone dust collector. FIG. 17 is an enlarged view of a portion B in FIG. This embodiment is different from the first embodiment in that a vibrator is provided in the hollow portion. Other configurations are the same as those in the first embodiment.

That is, as shown in FIG. 16, a vibration motor 36 is provided as a vibration exciter in the hollow portion 18a formed between the top conical surface and the bottom surface of the compression plate 18. Then, as shown in FIG. 17, a lead wire 37 connected to the vibration motor 36 is passed through the hollow of the elevating shaft 19, and the lead wire 37 is disposed on the outer peripheral surface of the movable shaft 23 in the axial direction, for example, a copper plate or the like Are connected to the conductive rail 38.

At this time, a contact spring 39 is provided on the operation unit side so that the contact spring 39 is in sliding contact with the rail 38. The contact spring 39 is further connected to a connector 40 provided on the outer side of the dust collecting case 2 via a lead wire 37. Thereby, it connects with the connector receptacle (not shown) provided in the cleaner body 100 side, and power is supplied from the cleaner body 100 side.

At this time, as shown in FIG. 17, the copper plate rail 38 disposed on the movable shaft 23 has a contact spring 39 in a state where the movable shaft 23 is located at the upper end and a position where the movable shaft 23 is pushed down and the latch 29 is engaged. The length is set so as to be out of the range. During the suction operation and during compression holding, the vibration motor 36 is not energized and is energized only while the operation lever 28 is being operated.

Thus, even if dust is present on the upper surface of the compression plate 18, the vibration plate 36 can be vibrated by the vibration motor 36 during the lowering operation of the compression plate 18 to remove dust and the like. As a result, it is possible to reliably prevent dust from entering the bearing portion 25 and realize a highly reliable compression device.

(Embodiment 3)
FIG. 18 is a partial cross-sectional view of the compression device according to Embodiment 3 of the present invention. The present embodiment is different from the other embodiments in that the compression plate 18 and the elevating shaft 19 are separated. Other configurations are the same as those of the other embodiments.

That is, as shown in FIG. 18, the compression plate 18 and the lift shaft 19 are assembled by inserting the lift shaft 19 into the recess 44 provided in the compression plate 18 so that the compression plate 18 and the lift shaft 19 can be detached. At this time, at least two engaging portions 41 that are spring-biased are provided symmetrically in the hollow portion 18a of the compression plate 18 and engaged with the engaged portion 42 provided on the lifting shaft 19 side. This prevents the compression plate 18 from coming off the lifting shaft 19.

Further, on the outer peripheral edge of the compression plate 18, a lock release lever constituting the release portion 43 is provided at a symmetrical position. Then, by pushing the lock release lever so as to be sandwiched, the engaging portion 41 is configured to move in a direction away from the engaged portion 42 and to be unlocked.

According to the present embodiment, since the compression plate 18 can be freely removed, maintenance such as cleaning of the dust collection chamber 2 can be facilitated.

As described above, the cyclone dust collecting apparatus according to the present invention can be used in the field of a vacuum cleaner such as a cyclone type that requires a small size and high dust collection performance.

DESCRIPTION OF SYMBOLS 1 Swirling chamber 2 Dust collection chamber 3 1st dust collection case (1st dust separation part)
4 Second dust collection case 5 Intake port 6 Exhaust tube 7 Ventilation part 8

Partition

8a, 8b Side face

part

8c, 8d Outer part 9 Wall 10 Inlet 11 Outlet 12 Partition wall 13 Ventilation grid 14 Bottom cover

15a Swivel passage

15b Transfer Passage 16 Second dust separation part 17 Fine dust chamber 18 Compression plate 18a Hollow part 19 Lifting shaft 20 Hollow part 21 Fixed shaft pin 22 Stopper 23 Movable shaft 24 First compression spring 25 Bearing 26 Slide holding part 27 Second Compression spring 28 Operation lever 29 Latch (lock part)
DESCRIPTION OF SYMBOLS 30 Recessed part 31 1st ratchet 32 2nd ratchet 33 1st transmission gear 34 Protrusion part 35 Tight packing 36 Vibration motor 37 Lead wire 38 Rail 39 Contact spring 40 Connector 41 Engagement part 42 Engagement part 43 Release part 44 Recess 50 Cyclone dust collector 51 Electric blower 52 Suction port 53 Second transmission gear 54 Power cord reel unit 60 Compressed dust 70 Dust removing unit 100 Vacuum cleaner main body

Claims

A cyclone dust collector comprising a dust collecting case provided with a swirling chamber that swirls air containing dust and separates the dust, and a dust collecting chamber that stores the dust below the swirling chamber,
An inlet through which the dust-containing airflow swirling in the swirl chamber flows into the dust collection chamber along the inner wall surface of the swirl chamber outer wall;
An air outlet that recirculates into the swirl chamber while the airflow swirling through the dust collection chamber is along the inner wall surface of the outer wall of the dust collection chamber;
An exhaust pipe for discharging the air separated from the dust provided in the swirl chamber;
A swirl passage defined by an outer wall of the swirl chamber and the exhaust pipe;
A partition wall connecting the inner opening edge of the inlet and the inner opening edge of the outlet provided in the swirl chamber;
A transfer path provided between the outer wall of the swirl chamber and the partition wall;
A ventilation part through which the air separated from the dust provided on the outer peripheral surface of the exhaust pipe passes;
Have
A cyclone dust collector provided so that a part of the dust collection chamber overlaps with the swirl chamber.
The cyclone dust collector according to claim 1, wherein an outer periphery of the exhaust pipe and an outer periphery of the partition wall are connected.
The dust collection case is used as a first dust separation unit, and a second dust separation unit is provided that separates the dust from the air including the dust that is disposed above the swirl chamber and has passed through the ventilation unit.
The second dust separation unit is a dust removal unit that removes attached fine dust;
A fine dust chamber disposed below the swirl chamber and having an inner space communicating with the inside of the exhaust pipe and the inside of the partition wall;
With
The cyclone dust collecting apparatus according to claim 1, wherein the fine dust chamber accumulates dust separated from the second dust separation part by the dust removal part.
The cyclone dust collector of Claim 1 which provided the ventilation grid in the said outflow port.
The cyclone dust collector according to claim 1, wherein a compression plate that moves up and down is provided in the dust collection chamber, and the compression plate is positioned at an upper end of the dust collection chamber during suction.
The cyclone dust collecting apparatus according to claim 5, wherein a bottom surface of the compression plate is located at or above an upper edge of the inlet and the outlet.
A lifting shaft coupled to the compression plate;
The cyclone dust collector according to claim 5, wherein a sliding holding portion that holds the lifting shaft so as to be movable up and down is provided adjacent to the swirl chamber.
8. The cyclone according to claim 7, wherein the sliding holding portion has a lock portion that locks and holds the lifting operation of the compression plate, and the lock portion automatically unlocks the compression plate in conjunction with a power cord. Dust collector.
A first compression spring coupled to the elevating shaft in a movable shaft that slidably holds the elevating shaft;
A second compression spring that is slidably held by the sliding holding portion and connected to an outer shell portion above the dust collection chamber, and the compression plate, the elevating shaft, and the movable shaft are The cyclone dust collector of Claim 7 which operate | moves separately through 1 compression spring and said 2nd compression spring.
The cyclone dust collecting apparatus according to claim 4, wherein the opening size of the ventilation grid is 1 to 2 mm.
The cyclone dust collector according to claim 5, wherein a gap between an inner wall surface of the dust collecting chamber and an outer peripheral edge of the compression plate is set to 2 to 5 mm.
The cyclone dust collector according to claim 5, wherein the upper surface of the compression plate has a substantially conical shape.
The cyclone dust collector according to claim 5, wherein a vibration exciter that vibrates the compression plate is provided in a hollow portion provided in the compression plate.
The cyclone dust collecting apparatus according to claim 5, wherein when the dust is thrown away, at least the bottom surface of the compression plate moves downward from the bottom surface of the dust collecting chamber to push out the dust.
An engagement portion and an engaged portion for engaging the compression plate and the elevating shaft are provided,
The cyclone dust collector according to claim 7, wherein the compression plate is detachable from the lifting shaft by a release portion that releases engagement with the lifting shaft provided on both edges of the compression plate.
The cyclone dust collecting apparatus according to claim 8, wherein when the compression plate is pushed down, the cyclone dust collecting device notifies that the dust is full because the movable shaft is not locked to the lock portion.
An electric vacuum cleaner comprising the cyclone dust collecting apparatus according to any one of claims 1 to 16.
In the vacuum cleaner provided with the cyclone dust collector according to claim 17,
The vacuum cleaner main body of the electric vacuum cleaner includes a power cord reel unit that stores a power cord so as to be wound up,
A second transmission gear that rotates in conjunction with the rotation of the power cord reel unit;
The lock part of the cyclone dust collector is
A latch,
A first ratchet for releasing the latch;
A second ratchet,
A first transmission gear;
The dust collection case is set on the vacuum cleaner body, and the first transmission gear and the second transmission gear are connected,
In conjunction with the rotation in the direction of pulling out the power cord, the first ratchet via the second transmission gear;
The second ratchet;
An electric vacuum cleaner that rotates in a direction in which the first transmission gear releases the latch and releases the lock of the compression plate.