JP2011250833A - Cyclone separator and vacuum cleaner with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly-reliable cyclone separator having a plurality of swirl portions and a dust-collecting portion which are separably assembled to facilitate maintenance, such as washing, of components, and preventing suction force and dust separating force from lowering, and to provide a vacuum cleaner with the same.SOLUTION: The cyclone separator includes: an inlet port 72 into which dust-containing air flows from outside; the swirl portions having a plurality of swirl chambers 21, 22, and 23 for separating dust and air from the dust-containing air, and an outlet port 81 for exhausting air from which the dust is separated; and the dust-collecting portion 25 communicating with the swirl portions and collecting the dust separated from the dust-containing air, wherein the plurality of swirl chambers 21, 22, and 23 and the dust-collecting portion 25, which constitute the swirl portions, are configured to be separable.

Description

  The present invention relates to a cyclone separating device that centrifugally collects air and dust by swirling dust-containing air (air containing dust) sucked from the outside of the apparatus, and an electric cleaning device equipped with the cyclone separating device Related to the machine.

  Conventional cyclone separators, especially cyclone separators used in vacuum cleaners, etc., have a structure that collects dust in the air by passing dust-intake air sucked by an electric blower through a dust collection filter or dust collection bag. It was. However, in an electric vacuum cleaner using such a cyclone separator, it is necessary to replace the dust bag attached in the main body of the vacuum cleaner periodically or from time to time. There was a problem that the burden was large because the dust bag had to be purchased.

In response to these problems, a cyclone separator that separates air and dust using centrifugal force and inertia force and collects dust without using consumable dust bags is installed. A vacuum cleaner has been proposed.
As a vacuum cleaner equipped with such a cyclone separator, for example, by providing a concentric outer cyclone and an inner cyclone contained in the outer cyclone connected in series, dust generated by the cyclone separator is provided. There has been proposed a vacuum cleaner in which the separation performance is improved (see, for example, Patent Document 1).

JP 2008-541815 (page 7-8, FIG. 5, FIG. 6)

The cyclone separation device of Patent Document 1 is roughly divided into a swirl chamber that separates air and dust, and a dust collection chamber that is detachably provided in the swirl chamber and collects the separated dust. When dust accumulates in the dust collection chamber, the dust collection chamber is removed from the swirl chamber, and the dust collection chamber is washed with water as necessary.
However, the swirl chamber having a complicated structure cannot be washed with water, so that the maintenance becomes insufficient. Therefore, there is a problem that fine dust accumulates in a portion where maintenance is difficult and clogs dust and the suction force decreases.

  The present invention has been made to solve the above-described problems. By configuring the plurality of swiveling parts and the dust collecting part to be separable, maintenance such as cleaning can be easily performed for each part, and suction can be performed. It is an object of the present invention to provide a highly reliable cyclone separation device capable of preventing a reduction in force and dust separation force and a vacuum cleaner including the same.

A cyclone separation device according to the present invention includes an inflow port through which dust-containing air flows from the outside, a plurality of swirl chambers that separate dust and air from the dust-containing air, and a discharge port that discharges the air from which the dust has been separated. A swirling unit having a dust collecting unit that communicates with the swirling unit and collects dust separated from the dust-containing air,
A plurality of swirl chambers and a dust collecting portion constituting the swirl unit are configured to be separable.

  Moreover, the vacuum cleaner which concerns on this invention is equipped with said cyclone separation apparatus.

  According to the present invention, the plurality of connected swiveling parts and the dust collecting part are separated, and maintenance such as cleaning is performed to prevent the clogging of the dust, so that the reduction in the suction force and the dust separation force is suppressed. It is possible to obtain a cyclone separation device that is easy to use and highly reliable, and a vacuum cleaner including the same.

It is a perspective view which shows the whole structure of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a top view of the cleaner body of FIG. It is a front view of the cleaner body of FIG. It is a side view of the cleaner body of FIG. It is a disassembled perspective view of the cleaner body of FIG. It is a top view of the cyclone separator mounted in the cleaner body of FIG. FIG. 7 is a front view of FIG. 6. FIG. 8 is a rear perspective view of FIG. 7. It is AA sectional drawing of FIG. FIG. 8 is an exploded perspective view of FIG. 7. It is a front view of the cyclone separator which shows a lock part. It is BB sectional drawing of FIG. It is effect | action explanatory drawing of FIG. It is CC sectional drawing of FIG. FIG. 12 is a configuration explanatory diagram of the lock unit of FIG. 11. It is a disassembled perspective view of the lock part of FIG. It is action | operation explanatory drawing of a lock part. It is a back surface perspective view of the front cover which covers a lock part. It is explanatory drawing which shows the attachment state of a front cover. It is sectional explanatory drawing of FIG. It is DD sectional drawing of FIG. 6 which shows the attachment structure of the dust collection part to a turning part. It is explanatory drawing of the principal part of FIG. It is effect | action explanatory drawing of FIG. It is action | operation explanatory drawing of FIG. It is a perspective view of a dust collection part, and an enlarged view of the principal part. It is the front view of a cyclone separator, and the side view of the dust collecting part.

1 is a perspective view showing the overall configuration of a vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a top view of the main body of the vacuum cleaner of FIG. 1, FIG. 3 is also a front view, and FIG. 5 is an exploded perspective view.
In the figure, 1 is a cleaner body, and 100 is a hose unit. The hose unit 100 has one end detachably connected to the vacuum cleaner main body 1 and the other end connected to the hand handle 102 having a bellows-like hose 101 to which the hand handle 102 having the operation unit 103 is connected. The suction pipe 104 and the suction port body 105 detachably connected to the suction pipe 104 constitute a suction path for allowing the dust-containing air sucked by the suction port body 105 to flow into the cleaner body 1. .

  The vacuum cleaner main body 1 includes a main body portion 2 and a cyclone separating device 20 that is detachably attached to the main body portion 2. A connection port 3 to which the hose 101 of the hose unit 100 is connected is provided on the front side of the main body 2, and a gate-type handle 4 is provided on the outer periphery thereof. A suction air passage 5 is provided on one side of the main body 2 and communicates with the connection port 3 and has a dust-containing air outlet 6 at the other end. An exhaust inlet 7 communicating with the inside of the portion 2 is provided, and an exhaust outlet 8 is provided on the other side of the front side.

  9 is a receiving portion of a power plug 10 of a power cord wound around a cord reel, which will be described later, 12 is a winding button of the cord reel, 13 is a rear wheel provided on both sides of the rear portion of the main body 2, and 14 is a rear wheel of the main body 2. It is a front wheel provided on the bottom front side. In addition, although not shown in figure, in the main-body part 2, the board | substrate with which the electric blower, the control part of this electric blower, etc. were provided, the cord reel etc. which wind up a power cord are provided.

Next, the cyclone separator 20 will be described. 6 is a top view of the cyclone separator 20, FIG. 7 is a front view, FIG. 8 is a rear perspective view of FIG. 7, FIG. 9 is a cross-sectional view taken along line AA of FIG. .
The cyclone separating apparatus 20 includes separable first, second, and third swivel units 21, 22, and 23 (in the following description, the first to third swivel units 21 to 23 are collectively referred to as a connected swivel unit 24). And a dust collecting unit 25. Reference numeral 50 denotes a front cover provided on the front side of the swivel unit 24.

  And the substantially L-shaped fitting part 21a, 22a, 23a by which the diameter was expanded and the lower part opened was each provided in the outer periphery of the lower end part of the 1st-3rd turning parts 21-23, On the outer periphery of the upper ends of the second and third swiveling parts 22 and 23 and the dust collecting part 25, there is a mounting groove for the packing 28, which has a smaller diameter than the fitting parts 21a to 23a and is fitted to the fitting parts 21a to 23a. Inserted substantially L-shaped fitting portions 22b, 23b, and 25b are provided.

As shown in FIG. 9, the cyclone separating apparatus 20 as described above includes a primary cyclone unit 70 and a secondary cyclone unit 80 arranged in parallel via a partition wall 27 provided at a substantially central portion in the width direction.
In the primary cyclone unit 70, 71 is a primary swirl chamber, which is provided in a cylindrical first primary swirl chamber 71 a provided in the second swirl unit 22 and a third swirl unit 23, and in the cylindrical portion and the lower part. It consists of a conical part with a reduced diameter as it is, and a lower part protrudes from the third swivel part 23 and a second primary swirl chamber 71b provided with a primary opening 74 at the tip. Reference numeral 76 denotes an opening provided on the peripheral wall of the second primary swirl chamber 71b of the primary swirl chamber 71 and communicating with the zero-order dust collection chamber 85 of the secondary cyclone unit 80 described later.

  Reference numeral 72 denotes a primary inlet that opens into the first primary turning chamber 71 a in the second turning portion 22, and is connected to the outlet 6 of the suction air passage 5 of the main body portion 2. Reference numeral 73 denotes a primary discharge port provided in the first primary swirl chamber 71a, which is formed of a cylindrical portion and a conical portion projecting downward from the second swivel portion 22 and having a reduced diameter as it becomes the lower portion. A large number of small holes are provided, and the upper end communicates with the secondary inlet 77 (FIG. 12) of the first swivel unit 21 via the primary discharge port 73a.

  In the secondary cyclone unit 80, 81 is a secondary discharge port provided in the first turning unit 21 and communicating with the exhaust inlet 7 of the main body unit 2. 82 is a secondary swirl chamber, which is provided in the second swirl unit 22 and is provided in the second swirl chamber 82b, which is slightly reduced in diameter as it goes downward, and in the third swirl unit 23, And a conical portion 82c provided with a secondary opening 83 that projects downward from the third swivel portion 23 and is reduced in diameter toward the lower portion. A secondary dust collection chamber 84 communicates with the secondary opening 83, and a zero-order dust collection chamber 85 formed from the outer periphery of the secondary swirl chamber 82 to the outer periphery of the secondary dust collection chamber 84.

  As shown in FIG. 9, the cyclone separating device 20 configured as described above is provided with fitting parts 21 a, 22 a, 23 a provided on the outer periphery of the lower ends of the first to third swivel parts 21, 22, 23. 2, the fitting parts 22b, 23b, 25b provided on the outer periphery of the upper ends of the third turning parts 22, 23 and the dust collecting part 25 are connected via a packing 28 made of a soft material, and the first and second turning parts 21 and 22, and the second and third swivel portions 22 and 23 are locked by lock portions 30a and 30b (hereinafter, simply referred to as 30; see FIG. 12) provided facing the front side and the back side. And coupled together. Moreover, the 3rd turning part 23 and the dust collection part 25 are locked by the below-mentioned locking device. In addition, 31 (FIGS. 10 and 11) is provided on both sides of the lock portion 30a on the front side (a top plate is provided on the first turning portion 21), and a front cover 50 to be described later is attached. It is a rib.

  Next, the lock part 30 provided before and behind the connection turning part 24 will be described with reference to FIGS. In addition, since the lock part 30 which locks the 1st turning part 21 and the 2nd turning part 22, the 2nd turning part 22 and the 3rd turning part 23 is the same structure, hereafter, the 1st turning part 21 and the 1st turning part 21 The lock unit 30 that locks the two swivel units 22 will be described.

  As shown in FIG. 15, stopper ribs 34a and 34b are provided between the mounting ribs 31 of the fitting portion 21a provided on the outer periphery of the lower end portion of the first turning portion 21, and the stopper ribs 34a and 34b are provided. Between the two, dovetail grooves 35 are formed. A lock rib 36 is provided on the bottom of one side (stopper rib 34a side) of the dovetail groove 35, and the bottom surface of the fitting portion 21a on the lock rib 36 side has a concave shape as shown in FIG. A cut portion 37 is provided.

  Reference numeral 40 denotes a lock lever having a substantially E-shaped cross section that is slidably fitted to the outer wall of the fitting portion 21a between the stopper ribs 34a and 34b. As shown in FIG. A T-shaped engaging portion 41 is provided to be fitted to the front end 35, and a loose protrusion 42 is formed on the rear end portion (the bottom surface side of the dovetail groove 35) (FIG. 15).

  In addition, the fitting portion 22b provided on the outer periphery of the upper end portion of the second turning portion 22 corresponds to the cutting portion 37 provided in the fitting portion 21a of the first turning portion 21, as shown in FIG. An engagement protrusion 45 directed inward is provided, and the thickness of the engagement protrusion 45 is substantially equal to or slightly thicker than the depth of the cut portion 37.

  As shown in FIGS. 10 to 12, the lock portion 30 configured as described above is connected to the first turning portion 21 before the second turning portion 22 is connected, that is, when not locked, as shown in FIGS. The lock levers 40 of the lock portions 30a and 30b provided at the front and rear are slid along the dovetail groove 35 in the arrow b direction (both are the same direction). The state at this time is shown in FIG.

In this state, when the fitting portion 21a of the first turning portion 21 is fitted to the fitting portion 22b of the second turning portion 22 via the packing 28, the engaging protrusion 45 provided on the fitting portion 22b is fitted. It engages with a cut portion 37 provided in the lock portions 30a and 30b of the joint portion 21a.
Next, as shown in FIGS. 13 and 14, the lock levers 40 of the front and rear lock portions 30a and 30b are slid in the direction of arrow a (both are the same direction). As a result, as shown in FIG. 15, the tip end portion of the stopper rib 34 a stops and stops, and the protrusion 42 provided on the T-shaped engaging portion 41 is locked by the lock rib 36.

Further, as shown in FIG. 17B, the engagement protrusion 45 of the fitting portion 22b engaged with the cutout portion 37 of the fitting portion 21a is connected to the lower surface of the cutout portion 37 of the fitting portion 21a and the lock lever 40. It is clamped between the bottom and locked.
Thereby, the 1st turning part 21 and the 2nd turning part 22 connected with this are locked by lock parts 30a and 30b provided in the front and back, and are combined together. Similarly, the second turning part 22 and the third turning part 23 connected to the second turning part 22 are also locked by the lock parts 30a and 30b and are integrally coupled.

  In this way, the first to third turning parts 21 to 23 are connected, and the lock levers 40 of the lock parts 30a and 30b provided at the front and rear are slid in the same direction to be locked. Since the lock and release operations are in the same direction, it is possible to prevent erroneous assembly of the components constituting the lock portion 30, and to improve the assembly and disassembly of the connecting swivel portion 24.

  In FIG. 18, reference numeral 50 denotes a front cover that covers the locking part 30 a on the front side of the connecting turning part 24 when it is locked, and from the top of the mounting rib 31 of the first turning part 21, the third turning part 23. A peripheral wall 51 is provided on the outer periphery on the back side so as to be fitted to the outer side of the mounting rib 31 provided on the outer periphery of the lock portion 30a. Yes. An engaging portion 52 that engages with an engaging portion 32 (FIG. 11) provided in the first turning portion 21 is provided at the upper portion on the back side, and the third turning portion 23 is provided at the lower portion. A pair of locking claws 53 that are locked to the provided engaging portion 33 are provided. Reference numeral 54 denotes an operation button for the locking claw 53, which is formed integrally with the locking claw 53. Reference numeral 55 denotes an erroneous attachment preventing rib.

  As shown in FIGS. 11, 18, and 19, the front cover 50 as described above locks the engaging portion 52 provided at the upper end portion with the engaging portion 32 of the first turning portion 21, and operates the front cover 50. By operating the button 54, the locking claw 53 is locked to the engaging portion 33 of the third turning portion 23, and the peripheral wall 51 is fitted and attached to the outer periphery of the mounting rib 31. At this time, the tip end portion of the erroneous attachment preventing rib 55 is located in the dovetail groove 35 of the lock portion 30a as shown in FIG.

In this case, the front cover 50 is in a state where the lock portion 30a is not securely locked, or as shown in FIG. 20B, the lock lever 40 does not contact the stopper rib 34a and stops halfway. , The malfunction prevention rib 55 hits the lock lever 40 and the locking claw 53 cannot be locked to the locking portion 33 of the third turning portion 23. Therefore, it is possible to prevent erroneous assembly and secure sealing performance.
Further, with respect to the lock portion 30 provided on the back surface, the main body portion 2 is provided with a rib (not shown) that provides the same effect as the erroneous attachment prevention rib 55 provided on the front cover 50, so that the cyclone separating device 20 is provided. Since it cannot be set in the main body 2 and it can be seen that the lock portion 30 is not securely locked, misassembly can be prevented and sealing performance can be ensured.

  In this way, the front cover 50 is configured to cover the lock portion 30a provided on the front surface side of the continuous turning portion 24 with the front cover 50, and the front cover 50 is attached only when the lock lever 40 is securely positioned on the lock side. As a result, it is possible to prevent misassembly and improve design.

Next, with reference to FIGS. 21 to 24, a device (locking device) that locks the dust collecting portion 25 with the third turning portion 23 will be described.
Between the attachment ribs 31 on the front side of the fitting portion 23a of the third turning portion 23, an extending portion 60 extending downward is provided. The extending portion 60 has an opening 60a ( (Engagement part) is provided. A locking portion 65 is formed at a position facing the extending portion 60 on the back side.

  A support member 61 is fixed with a screw at a position corresponding to the extended portion 60 provided on the third swivel portion 23 on the front side of the dust collection portion 25, and a shaft 63 provided on the support member 61 includes A lower end portion of the movable body 62 having a locking claw 62a on the upper portion is supported rotatably. And this movable body 62 is always urged | biased counterclockwise around the axis | shaft 63 by the spring 64 interposed between the dust collection parts 25, The latching claw 62a is the opening part of the extension part 60 It is locked to 60a. Reference numeral 25a denotes a cover that covers the front surface of the support member 61 and the like.

  Further, a button cover 66 is fixed with a screw and a claw on the handle 26 on the back side of the dust collecting portion 25, and a shaft 68 provided on the handle 26 has a locking claw 67a at the tip. A push button 69 formed integrally with the L-shaped locking lever 67 is rotatably supported, and is always urged upward by a spring 69a interposed between the handle 26 and the locking claw 67a. Is locked to the locking portion 65 of the third turning portion 23.

Next, the operation of the locking device for the dust collecting unit 25 configured as described above will be described.
In the state of FIGS. 21 and 22, the dust collecting unit 25 is connected to the third swivel unit 23, and the locking claw 62 a of the movable body 62 is provided on the extended portion 60 of the third swivel unit 23 on the front side. Locked in the opening 60a, the back side is locked in the front and rear by the locking claw 67a of the locking lever 67 provided above the handle 26 locked in the locking part 65 of the third turning part 23. Yes.

As shown in FIG. 23, when the push button 69 provided above the handle 26 is squeezed down, the latch lever 67 formed integrally with the push button 69 is squeezed down, and the latch lever 67 is centered on the shaft 68. The locking claw 67a is released from the locking portion 65 of the third turning portion 23 by rotating clockwise.
Next, when the upper part (the connecting turning part 24) is tilted from the third turning part 23 to the front side, the extension part 60 provided in the fitting part 23a of the third turning part 23 as shown in FIG. The distal end portion 60 b presses the movable body 62, rotates the movable body 62 clockwise about the shaft 63, and disengages the locking claw 62 a from the opening 60 a of the extending portion 60. As a result, the front and rear locks are released.

In this state, the dust collecting part 25 can be easily detached from the third turning part 23 by pulling up the connecting swivel part 24 obliquely upward or pulling the dust collecting part 25 downward.
In this way, the connecting swivel unit 24 and the dust collecting unit 25 are connected to each other by releasing the lock by the locking lever 67 on one side by the push button 69 and tilting the connecting swivel unit 24 on the other side. Since the lock by 62 is automatically released, it is possible to obtain the cyclone separating device 20 that is easy to unlock and easy to use.

  FIG. 25 shows a structure for attaching the packing 28 made of a soft material to the fitting portion 25b of the dust collecting portion 25. As shown in FIG. The fitting part 25b is provided with a packing mounting groove 25c whose upper part is open, and a notch part 25d is provided in a part of the outer wall of the fitting part 25b, so that the packing 28 mounted in the packing mounting groove 25c is provided. When detaching, a finger is put in the notch 25d so that it can be easily removed. Thereby, the packing 28 can be easily attached and detached, and can be cleaned appropriately. The fitting portions 22b and 23b of the second and third turning portions 22 and 23 may have the same structure.

In addition, as shown in FIG. 26, the bottom of the dust collecting unit 25 is formed to be substantially flat and can be held in an inverted state when the cyclone separating device 20 is assembled or the dust collecting unit 25 is removed. Therefore, handling is improved and there is no damage due to rollover.
Furthermore, as shown in FIG. 8, an eye mark (symbol) 90 such as a number is displayed on the first to third swivel units 21 to 23 and the dust collecting unit 25 constituting the cyclone separation device 20. As a result, the assembly order is easily understood, and erroneous assembly is prevented.

Next, an example of the assembly procedure of the cyclone separator 20 configured as described above will be described with reference to FIGS.
According to the eye mark 90 provided on each member, first, the fitting portion 21a of the first turning portion 21 is fitted to the fitting portion 22b of the second turning portion 22 to which the packing 28 is attached, and the front and rear locks are made. The lock lever 40 of the portions 30a and 30b is slid in the direction of arrow a to lock.

Similarly, the fitting portion 22a of the second turning portion 22 is fitted into the fitting portion 23b of the third turning portion 23 and locked by the lock portions 30a and 30b.
Next, the front cover 50 is attached to the mounting rib 31, the engaging portion 32, and the locking portion 33 provided on the front side of the connection turning portion 24 to cover the front surface of the lock portion 30 a.

  Next, in a state where the dust collection unit 25 is erected, the lower part of the primary swirl chamber 71 and the secondary swirl chamber 82 of the third swirl unit 23 connected to the primary dust collection chamber 75 and the zeroth order of the dust collection unit 25. Insert into the dust collection chamber 85 and reduce. Thereby, the fitting portion 23a of the third turning portion 23 is fitted to the fitting portion 25b of the dust collecting portion 25 via the packing 28, and the locking claw 62a of the movable body 62 of the dust collecting portion 25 is the first. The locking claw 67 a of the locking lever 67 provided above the handle 26 is locked to the opening 60 provided in the extended portion 60 of the third turning portion 23, and the locking portion of the third turning portion 23. Engaging with 65, the swivel unit 24 and the dust collecting unit 25 are integrally coupled and automatically locked.

In this case, assembling is performed according to the eye mark 90 provided on each member as described above, so that the assembling procedure is not mistaken. In addition, since the dust collecting part 25 is inverted and the connecting swivel part 24 is fitted and pressed down on the dust collecting part 25, it is automatically coupled and locked, so that the assembling work is easy.
In the above description, the case where the cyclone separator 20 is assembled in the order of the first swivel unit 21, the second swivel unit 22, the third swivel unit 23, and the dust collecting unit 25 is shown. First, the third swivel unit 23 may be coupled to the dust collecting unit 25, and then the second and first swivel units 22 and 23 may be coupled in order, for example, to be assembled.

  Moreover, since the 1st-3rd turning parts 21-23 and the dust collection part 25 were couple | bonded so that it might become a compression direction via the packing 28 which consists of a soft material, a sealing performance can be improved. Further, since the packing 28 is disposed between the fitting portions 21a to 23a and the fitting portions 22b to 25b which are outside the air passage of the dust-containing air, the packing 28 is difficult to get dirty, and the packing 28 can be easily removed during maintenance. Since it can wash | clean, a sealing performance can be maintained over a long period of time.

Next, operations of the cyclone separator 20 configured as described above and an electric vacuum cleaner equipped with the cyclone separator 20 will be described.
As shown in FIGS. 4 and 5, the cyclone separating device 20 is detachably mounted on the main body 2 with a handle 26 provided on the dust collecting unit 25 facing down. The primary inlet 72 provided in the second swivel unit 22 is connected to the outlet 6 of the suction air passage 5 of the main body 2, and the secondary outlet 81 is connected to the exhaust inlet 7.

  As a result, the cleaner body 1 allows the dust-containing air flowing in from the hose unit 100 to be sucked into the suction air passage 5, the primary inlet 72, the primary swirl chamber 71, the primary discharge port body 73, the secondary inlet 77, and the secondary swirl. An air passage is formed which passes through the chamber 82 and the secondary discharge port 81 in order and is purified, guided into the main body 2 and discharged from the exhaust port 8 to the outside.

Now, the power plug 10 of the power cord pulled out from the cord reel is connected to a commercial power outlet, the power switch of the operation unit 103 provided on the hand handle 102 of the hose unit 100 is turned on, and the electric motor in the cleaner body 1 is turned on. When the blower is energized, the operation of the vacuum cleaner is started. Then, dust-containing air is sucked from the suction port body 105 by the suction force of the electric blower, and flows into the primary swirl chamber 71 from the suction air passage 5 through the primary air inlet 72 through the hose unit 100. The dust-containing air that has flowed along the peripheral wall of the primary swirl chamber 71 becomes a swirling airflow.
The swirling airflow forms a forced vortex region near the central axis of the primary swirl chamber 71 and a quasi-free vortex region on the outer peripheral side thereof, and moves downward in the primary swirl chamber 71 due to its path structure and gravity. Flowing.

At this time, centrifugal force acts on the dust in the swirling dust-containing air, whereby the dust-containing air is separated into dust and air. Here, in the primary swirl chamber 71, dust is roughly divided and separated into large, medium, and small by specific gravity.
Among the dust separated by centrifugal force, dust having a large specific gravity (for example, large sand, pebbles, etc., hereinafter referred to as dust A) is introduced into the zero-order dust collection chamber 85 from the opening 76 provided on the wall surface of the primary swirl chamber 71. Jump out to be collected. The dust A collected in the zero-order dust collection chamber 85 has a relatively large specific gravity and is difficult to re-scatter, and is accumulated at the bottom of the zero-order dust collection chamber 85.

  On the other hand, the dust-containing air containing small dust, which has not jumped out from the opening 76, is swung downward from the primary swirl chamber 71, that is, from the cylindrical portion of the second primary swirl chamber 71b toward the conical portion. Flowing. Since the swirling flow of the dust-containing air that has advanced to the conical portion decreases as the swirling flow decreases, the swirling speed increases. Accordingly, dust having a specific gravity smaller than that of dust A (for example, cotton dust, fine light sand, etc., hereinafter referred to as dust B) can be separated by centrifugal force, and the separated dust B is separated from the primary opening 74 at the bottom. It is collected and accumulated in the primary dust collection chamber 75.

  Then, the air containing fine dust having a small specific gravity from which dust A and dust B are removed from the dust-containing air rises along the central axis of the primary swirl chamber 71 and is guided into the primary discharge port body 73 to be discharged first. It flows into the secondary cyclone section 80 from the outlet 73a through the secondary inlet 77 (FIG. 12).

The air containing fine dust that has flowed into the secondary cyclone unit 80 flows almost horizontally along the peripheral wall of the first secondary swirl chamber 82a of the secondary swirl chamber 82 to form a swirl flow, and the forced flow in the vicinity of its central axis While forming the vortex region and the quasi-free vortex region on the outer peripheral side thereof, it flows downward due to its path structure and gravity.
And the fine dust is separated by descending the second and third secondary swirl chambers 82b and 82c of the secondary swirl chamber 82, and the separated fine dust is collected in the secondary dust collection chamber 84, Accumulated. Air purified by removing fine dust rises in the secondary swirl chamber 82 and flows into the main body 2 from the secondary discharge port 81 to cool the heat generating parts such as the electric blower, the cord reel, and the substrate. After that, it is discharged from the exhaust port 8 to the outside.

When dust accumulates in the dust collecting part 25, the cyclone separating device 20 is removed from the main body part 2, the dust collecting part 25 is removed from the connecting swivel part 24 as described above, the dust is discarded, and water is washed as necessary. To do. Moreover, the 1st-3rd turning parts 21-23 are isolate | separated suitably, an inside is wash | cleaned, and packing 28 is removed and wash | cleaned. This prevents fine dust from accumulating in places that are difficult to care for and reducing the suction force and dust separation force, and also maintains the sealing performance by the packing 28.
When the dust is discarded or washed, the reassembled cyclone separator 20 is attached to the main body 2.

  Here, when the diameters of the swirl chambers around the discharge ports of both the cycle units 70 and 80 (around the primary discharge port 73a and the secondary discharge port 81) are compared, the secondary cyclone unit 80 is configured to be smaller than the primary cyclone unit 70. Has been. The opening area of the secondary discharge port 81 is smaller than the opening area of the primary inlet 72, and the swirling speed of the air in the swirl chamber is higher in the secondary cyclone unit 80 than in the primary cyclone unit 70. It is supposed to be. Thereby, the fine dust that could not be collected by the primary cyclone unit 70 can be collected by the secondary dust collecting chamber 84 of the secondary cyclone unit 80.

  In addition, the primary discharge port body 73 is provided with a large number of small holes, which is larger than the small holes of the primary discharge port body 73 in the dust-containing air flowing from the primary cyclone unit 70 to the secondary cyclone unit 80. The dust is prevented from passing through the primary discharge port body 73, and the dust clogged in the small hole is removed by the swirling airflow flowing around the primary discharge port body 73, and the small hole of the primary discharge port body 73 is clogged with dust. Is preventing.

Further, by forming the lower portion of the primary discharge port body 73 in a conical shape, the upward air flow from the lower side of the primary discharge port body 73 can be discharged smoothly, and thus pressure loss can be reduced.
Moreover, since the lower part of the primary discharge port body 73 is formed in a conical shape, it can be easily removed even when long thread-like dust such as hair is wound around.

  Thus, according to the cyclone separator and the electric vacuum cleaner equipped with the cyclone separator according to the present invention, the dust-containing air sucked by the hose unit 100 can be reliably separated into dust and air by the cyclone separator 20. The separated dust is collected and accumulated in the dust collecting chamber 25, and the purified air cools the heat generating part in the main body part 2 and discharges it to the outside. You can get a vacuum cleaner.

  Moreover, when dust collects in the dust collection part 25 of the cyclone separator 20, it can always keep clean by removing the dust collection part 25 from the turning part 24, discarding dust, and washing with water as needed. . Furthermore, since the swirl chamber has a conical shape, when the swirl chamber cannot be separated, it is difficult to clean the dust adhering to the discharge port, whereas the first to third swirl units 21 to 31 constituting the connection swirl unit 24 are difficult. By appropriately separating 23, the dust adhering to the discharge port (drain pipe) disposed in the swirl chamber can be easily cleaned and washed (removed). Further, since the packing 28 interposed between these and the dust collecting unit 25 is removed and cleaned, clogging due to accumulation of fine dust in the connecting swivel unit 24 is removed and the suction force is reduced. In addition, it is possible to improve the sealing performance, and thus it is possible to obtain a cyclone separation device 20 that is easy to use and highly reliable, and an electric vacuum cleaner including the same.

  In the above description, as shown in the figure, a case is shown in which the cyclone separating device 20 including the first to third swiveling units 21 to 23 and the dust collecting unit 25 is mounted on the main body 2 of the illustrated vacuum cleaner main body 1. However, the number of swirling parts constituting the cyclone separating device 20 may be plural, and the structure of the main body 2 is not limited to this.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body, 2 Main body part, 5 Suction air path, 6 Outflow port, 7 Exhaust inflow port, 8 Exhaust port, 20 Cyclone separation device, 21 1st turning part, 22 2nd turning part, 23 3rd Rotating part, 24 connecting turning part, 25 dust collecting part, 21a, 22a, 23a fitting part, 22b, 23b fitting part, 28 packing, 30a, 30b locking part, 35 dovetail groove, 40 locking lever, 45 engaging protrusion , 50 Front cover, 55 Misinstallation prevention rib, 60 Extension part, 60a Opening part, 62 Movable body, 62a Locking claw, 65 Locking part, 67 Locking lever, 67a Locking claw, 69 Push button, 70 Primary Cyclone section, 71 Primary swirl chamber, 72 Primary inlet, 73a Primary outlet, 75 Primary dust collection chamber, 76 Opening, 77 Secondary inlet, 80 Secondary cyclone section, 81 Secondary outlet, 82 Secondary swirl Chamber, 83 Secondary opening , 84 Secondary dust collection chamber, 850 secondary dust collection chamber, 90 eye mark (symbol), 100 hose unit.

Claims (15)

An inflow port through which dust-containing air flows from the outside, a plurality of swirling chambers for separating dust and air from the dust-containing air, and a swirling unit having a discharge port for discharging the air from which the dust has been separated; A dust collecting part for collecting dust separated from the dust-containing air in communication;
A cyclone separation device characterized in that a plurality of swirl chambers and a dust collecting portion constituting the swirl portion can be separated. A primary inflow port through which dust-containing air flows from the outside, a primary swirl chamber that swirls the dust-containing air that flows in from the primary inflow port to separate a part of the dust, and the primary swirl chamber provided below the primary swirl chamber A primary cyclone unit having a primary dust collection chamber for collecting the dust separated in step 1 and a primary discharge port for discharging dust-containing air in the primary swirl chamber;
A secondary inlet into which dust-containing air from the primary discharge port flows in, a secondary swirl chamber in which the dust-containing air flowing in from the secondary inlet is swirled to further separate dust, and the secondary swirl chamber separates them. A secondary dust collecting chamber that collects dust, and a secondary cyclone unit having a secondary discharge port for discharging air from the secondary swirl chamber;
Zero-order dust collection that is provided on the outer periphery of the secondary swirl unit and collects dust separated in the swirl direction of the dust-containing air in the primary swirl chamber through an opening provided on the peripheral wall of the primary swirl chamber. A room,
A plurality of swirl portions constituting the primary swirl chamber and the secondary swirl chamber and a dust collection portion constituting the primary dust collection chamber, the secondary dust collection chamber and the zero-order dust collection chamber are configured to be separable. A cyclone separator that is characterized. The primary swirl chamber is composed of a first primary swirl chamber and a second primary swirl chamber, and the secondary swirl chamber is a first secondary swirl chamber, a second secondary swirl chamber, and a third secondary swirl chamber. It consists of rooms,
A first swirl unit having the secondary inlet, a secondary discharge port and the first secondary swirl chamber;
The first primary swirling chamber having the primary inlet and having a primary discharge port communicating with the secondary inlet, and a second swirling portion having the second secondary swirling chamber;
A third swirl unit having the second primary swirl chamber and the third secondary swirl chamber each having an opening in a peripheral wall;
The primary dust collecting portion is formed on an outer periphery of the second primary swirling chamber, the secondary dust collecting portion is provided continuously to the third secondary swirling chamber, and the third secondary swirling portion A dust collecting part having the zero-order dust collecting chamber provided on the outer periphery and communicating with an opening provided on a peripheral wall of the second primary swirl chamber;
The cyclone separator according to claim 2, wherein the first to third swivel units and the dust collecting unit are separable.   A substantially L-shaped fitting portion is provided on the outer periphery of the lower end portion of the first to third turning portions, and the fitting portion is fitted on the outer periphery of the upper end portions of the second and third turning portions and the dust collecting portion. The cyclone separator according to claim 3, wherein a fitting portion is provided, the fitting portion is fitted into the fitting portion, and the first to third turning portions and the dust collecting portion are integrally connected.   A packing made of a soft material is attached to a groove provided in the fitting portion of the second and third swivel portions and the dust collection portion, and the first to third swivel portions and the dust collection portion are arranged in the compression direction of the packing. The cyclone separator according to claim 4, wherein the cyclone separator is connected.   The cyclone separator according to claim 5, wherein a notch for taking out the packing is provided in a groove provided in the fitting portion of the second and third swivel parts and the dust collecting part.   The cyclone separator according to any one of claims 3 to 6, wherein a lock portion is provided on each of the front side and the back side of the connecting portion of the first to third turning portions.   A dovetail groove provided in the fitting portion of the first and second swivel portions, a lock lever slidably provided in the dovetail groove, and a fitting portion of the second and third swivel portions The cyclone separating device according to claim 7, wherein the cyclone separating device is configured by an engaging protrusion that is provided between the engaging portion and is held between the lower surface of the fitting portion and the lock lever.   The cyclone separator according to claim 8, wherein the lock levers provided in the plurality of lock portions have the same moving direction when locked or unlocked.   The cyclone separator according to any one of claims 7 to 9, further comprising a front cover that covers a lock portion provided on the front side.   The cyclone separator according to claim 10, wherein the front cover is configured to be attached only when the lock lever is positioned on the lock side.   By fitting the third swivel part to the dust collecting part, it is locked by a lock device provided on the front side and the back side, and the back side lock is released by pressing the push button of the back side lock device. The tilting of the swivel part to the front side releases the front side locking device, and the dust collecting part is removed from the swivel part. Cyclone separation device.   The cyclone separator according to any one of claims 3 to 12, wherein a bottom surface of the dust collecting portion is formed to be substantially flat so as to be inverted.   The cyclone separator according to any one of claims 3 to 13, wherein a sign indicating an assembly order is attached to the first to third swivel parts and the dust collecting part.   A vacuum cleaner comprising the cyclone separator according to any one of claims 1 to 14.

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