JP2003088485A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cyclone dust collection type vacuum cleaner which efficiently separate dust and effectively prevents separated dust from sticking to an exhaust cylinder. SOLUTION: An air flow generated by operation of an electric blower flows into the separation chamber 132 of a cyclone dust collecting device 100 from a flow-in port 130 to be a fast rotary air flow, which flows down along the outside of a shielding member 150 arranged at the boundary of a separation chamber 132 and an accumulation chamber 133 and enters the accumulation chamber 133. The downward swirling air flow is changed to be a upward swirling air flow near the bottom face of the accumulation chamber 133. When the direction of the swirling air flow is changed when colliding with a separation blade 160 extending from the shielding member 150 toward the bottom surface of the accumulation chamber 133, dust in the air flow is separated. When the upward swirling air flows over a looped barrier provided at the edge of the shielding member 150 and when it flows over ribs 155 formed at prescribed intervals so as to cut off the swirling air flow at the outer periphery of the shielding member 150, dust is separated respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a cyclone dust collector for an electric vacuum cleaner.

[0002]

2. Description of the Related Art An electric vacuum cleaner equipped with a cyclone dust collecting device is widely used, in which dust is sucked from an inlet by an air flow generated by the operation of an electric blower, and the sucked air flow is swirled to separate the dust contained in the air flow. Has been done. An example of such a cyclone dust collecting type vacuum cleaner can be found in, for example, Japanese Patent Laid-Open No. 2000-166829. FIG. 10 shows a schematic configuration of the electric vacuum cleaner disclosed in this publication. The electric vacuum cleaner 1 connects a suction port body 6 to a main body 2 having a built-in electric blower 3 via a suction hose 4 and a connection pipe 5. The suction port body 6 has a suction port 7 facing the floor surface f. A cyclone dust collector 8 having a dust cup 9 is arranged between the suction hose 4 and the connection pipe 5. The inlet of the cyclone dust collector 8 is the connection pipe 5
And the outlet is connected to the suction hose 4, thereby forming an intake path from the suction port body 6 to the electric blower 3 through the connection pipe 5, the cyclone dust collector 8, and the suction hose 4. . The handle 35 projects from the cyclone dust collector 8. At the base of the handle portion 35, an operation portion 36 in which various operation keys, a driving status display portion, and the like are arranged is provided.

In the electric vacuum cleaner 1 having the above structure, when the electric blower 3 is driven, an air flow is generated in the intake passage, and the air flow containing dust is sucked from the suction port 7 of the suction port body 6. The sucked airflow reaches the cyclone dust collector 8 through the connection pipe 5, where the dust is separated from the airflow. The dust is accumulated in the dust cup 9 which is a dust accumulating means, and only the air flow is sucked from the suction hose 4 to the electric blower 3 and discharged to the outside of the main body 2. The dust cup 9 has a circular horizontal cross section and a vertical cross section that tapers toward the opening at the upper end.

FIG. 11 is a vertical cross-sectional view showing the structure of a conventional cyclone dust collector 8, showing a case where the longitudinal direction of the connecting pipe 5 is vertical. Reference numeral 10 denotes a cyclone main body of the cyclone dust collector 8. The cyclone body 10 has a separation chamber 12 formed at the upper end of a connecting pipe 11 connected to the connecting pipe 5 so as to project laterally. The separation chamber 12 has a substantially circular horizontal cross section, and an air inlet 13 from the connecting pipe 11 is opened in a part of the inner peripheral wall of the separation chamber 12. Inlet 1
3 is provided at a position where the inflow direction of air is tangential to the inner peripheral wall of the separation chamber 12. An exhaust pipe 14 is arranged at the center of the separation chamber 12.

The exhaust tube 14 is a cylindrical member having a closed bottom surface and an open top surface.
Is provided. The upper opening of the exhaust pipe 14 communicates with a connecting pipe 16 provided on the upper portion of the cyclone body 10. Connection pipe 1
A suction hose 4 is connected to 6. An opening 17 is provided at the lower end of the separation chamber 12, and the dust cup 9
The opening 18 at the upper end of is fitted in an airtight manner.

The mechanism for holding the dust cup 9 as the dust collecting means is as follows. A downward hook 19 is formed below one side surface of the dust cup 9 and the side surface facing the connection pipe 5, and the hook 19 is engaged with the hook 20 on the side surface of the connection pipe 5. The dust cup 9 is held firmly by engaging the opening 18 at the upper end with the opening 17 of the separation chamber 12 and by engaging the hook 19 with the hook 20 on the lower side.

In order to maintain the above holding state, the mounting piece 21 is attached near the upper end of the outer surface of the dust cup 9. The mounting piece 21 is attached to the dust cup 9 via a horizontal shaft 22 and is rotatable in a vertical plane. On the upper end of the mounting piece 21, a locking claw 24 that engages with the convex portion 23 on the outer surface of the cyclone body 10 is formed. The lower part of the mounting piece 21 serves as a pressing portion 25 for pressing with a finger. A compression coil spring 26 is inserted between the pressing portion 25 and the outer surface of the dust cup 9,
A rotation biasing force for engaging the locking claw 24 with the convex portion 23 is applied to the mounting piece 21.

The surfaces of the locking claw 24 and the convex portion 23 facing each other are inclined surfaces with the locking claw 24 side facing upward and the convex portion 23 side facing downward. Therefore, when the dust cup 9 is pressed against the cyclone body 10, the locking claws 24 and the slopes of the projections 23 come into contact with each other, and the mounting piece 21 rotates against the biasing force of the compression coil spring 26. Locking claw 24
If the vehicle rides over the convex portion 23, they are engaged with each other, and the engaged state is maintained by the compression coil spring 26. In this state, the dust cup 9 cannot be pulled out from the cyclone body 10. The dust cup 9 can be removed by pressing the pressing portion 25 and releasing the engagement of the locking claw 24 with the convex portion 23.

When the air stream is sucked into the cyclone dust collector 8, the air stream flows from the connecting pipe 11 through the inlet 13 into the separation chamber 12 in the tangential direction along the inner peripheral wall of the separation chamber 12. A high-speed swirling airflow is formed around the exhaust stack 14. Dust contained in the airflow is separated from the airflow by the centrifugal force caused by the high-speed turning, and falls and accumulates in the dust cup 9. The airflow swirling around the exhaust pipe 14 enters the exhaust pipe 14 through the exhaust port 15 and is sucked into the suction hose 4.

[0010]

In the cyclone dust collecting type vacuum cleaner as described above, it is a major problem to prevent the dust separated from the air flow from adhering to the exhaust stack. Therefore, an object of the present invention is to provide a cyclone dust collecting type vacuum cleaner that has a high dust separation efficiency and can effectively prevent the separated dust from adhering to the exhaust stack. In addition, it is an object of the present invention to provide a cyclone dust collecting type electric vacuum cleaner which is easy to handle dust and is easy to use.

[0011]

In order to achieve the above object, in the present invention, dust is sucked from the suction port by the air flow generated by the operation of the electric blower, and the sucked air flow is passed through the suction passage communicating with the suction port. In the cyclone dust collector, the airflow is swirled in the separation chamber of this cyclone dust collector to separate the dust, and the separated dust is accumulated in the accumulation chamber of the same cyclone dust collector. A shielding member is arranged at the boundary between the chamber and the accumulating chamber, and this shielding member has a shape in which a predetermined gap is formed between the outer periphery of the accumulating chamber and the inner wall of the accumulating chamber, and its edge faces the bottom surface of the accumulating chamber. It is formed by forming a protruding loop-shaped barrier.

According to the above construction, the swirling airflow generated in the separation chamber enters the collection chamber through the gap between the shielding member and the inner wall of the collection chamber, dust is collected in the collection chamber, and then returns to the separation chamber. At this time, if the swirling airflow returning to the separation chamber contains dust, the dust is separated when the airflow makes a direction change to cross the barrier and remains in the collection chamber.

Further, according to the present invention, dust is sucked from the suction port by the air flow generated by the operation of the electric blower, and the sucked air flow is introduced into the cyclone dust collecting device through the intake passage communicating with the suction port, and the cyclone collecting device is provided. In a vacuum cleaner that separates dust by swirling an air flow in the separation chamber of the dust device and accumulates the separated dust in the accumulation chamber of the same cyclone dust collector, a shielding member is arranged at the boundary between the separation chamber and the accumulation chamber. However, the shielding member has a shape in which a predetermined gap is formed between the outer periphery of the shielding member and the inner wall of the accumulation chamber, and a loop-shaped barrier protruding toward the separation chamber is formed at the edge thereof. .

According to the above construction, the air flow that swirls along the shielding member in the separation chamber becomes an ascending air flow at the barrier, and the dust that extends from the accumulation chamber and approaches the center of the separation chamber is eliminated.

Further, according to the present invention, dust is sucked from the suction port by the air flow generated by the operation of the electric blower, and the sucked air flow is introduced into the cyclone dust collecting device through the intake passage communicating with the suction port, and the cyclone collecting device is provided. In a vacuum cleaner that separates dust by swirling an air flow in the separation chamber of the dust device and accumulates the separated dust in the accumulation chamber of the same cyclone dust collector, a shielding member is arranged at the boundary between the separation chamber and the accumulation chamber. The shielding member has a shape such that a predetermined gap is formed between the outer periphery of the shielding member and the inner wall of the accumulating chamber, and a plurality of the shielding members are arranged at a predetermined interval on the outer periphery of the shielding member so as to shield the swirling air flow returning from the accumulating chamber to the separation chamber. It is formed by forming individual ribs.

According to the above construction, the swirling airflow generated in the separation chamber enters the collection chamber through the gap between the shielding member and the inner wall of the collection chamber, dust is collected in the collection chamber, and then returns to the separation chamber. At this time, if dust is contained in the swirling airflow that is about to return to the separation chamber, the dust is separated when the airflow collides with the rib and changes direction, and remains in the collection chamber.

Further, according to the present invention, dust is sucked from the suction port by the air flow generated by the operation of the electric blower, and the sucked air flow is introduced into the cyclone dust collector through the intake passage communicating with the suction port, and the cyclone collecting device is provided. In a vacuum cleaner that separates dust by swirling an air flow in the separation chamber of the dust device and accumulates the separated dust in the accumulation chamber of the same cyclone dust collector, a shielding member is arranged at the boundary between the separation chamber and the accumulation chamber. The shielding member has a shape in which a predetermined gap is formed between the outer periphery of the shielding member and the inner wall of the accumulating chamber, and the surface facing the bottom surface of the accumulating chamber is provided with a plurality of separation blades extending toward the bottom surface. These separating blades are arranged radially from the center of the shielding member toward the inner wall of the accumulation chamber, and have a shape in which a predetermined gap is formed between the edge and the inner wall of the accumulation chamber. It is.

According to the above structure, the swirling airflow generated in the separation chamber and entering the collection chamber through the gap between the shielding member and the inner wall of the collection chamber collides with the separation blade in the collection chamber to change the direction of dust. To be separated.

Further, in the present invention, the accumulating chamber has a shape that is narrowed in an inverted truncated cone shape from the inlet toward the bottom surface, and the separating blade is also shaped accordingly. As a result, the swirling velocity is maintained even when the swirling airflow approaches the bottom surface of the accumulation chamber, and the reduction in centrifugal force is covered.

Further, in the present invention, one of the separating blades has a smaller gap with the inner wall of the collecting chamber than the other separating blades. Dust is caught and stays in this narrow gap, and the accumulation of dust grows with this as a nucleus.

Further, in the present invention, the accumulation chamber wall located on the opposite side of the separation blade having a narrow gap with the accumulation chamber inner wall is made a see-through portion, and a dust disposal reference mark is provided at this see-through portion. Thus, the dust disposal time is determined by observing the amount of dust at a place other than the place where dust is accumulated and accumulated.

Further, according to the present invention, dust is sucked from the suction port by the air flow generated by the operation of the electric blower, and the sucked air flow is introduced into the cyclone dust collector through the intake passage communicating with the suction port, and the cyclone collecting device is provided. In an electric vacuum cleaner in which the air flow is swirled in the separation chamber of the dust device to separate the dust and the separated dust is accumulated in the accumulation chamber of the same cyclone dust collector, an exhaust pipe is arranged at the center of the separation chamber and A lattice-shaped exhaust port is provided on the peripheral wall of the cylinder, and a filter is attached to the exhaust port, and a cleaning tool that contacts and slides on the filter is arranged on the outside of the exhaust port. The crosspieces forming the above are present in a plane that diagonally intersects the axis of the exhaust pipe.

According to the above construction, when the cleaning tool gets over the crosspiece, no load is generated at one time, and the resistance when sliding the cleaning tool is reduced.

[0024]

DETAILED DESCRIPTION OF THE INVENTION Various embodiments of the present invention will be described below with reference to FIGS. These embodiments are common in many parts to the conventional structure introduced in FIGS. 10 and 11 in the basic configuration as the electric vacuum cleaner, and therefore, the common components will be denoted by the same reference numerals and will not be described. Is omitted.

1 to 7 show a first embodiment of the present invention. The vacuum cleaner 1A of the first embodiment has a cyclone dust collector 100 mounted on a main body 2A. The main body 2A has a slightly flat shape, and the connection port 80 of the suction hose 4 is provided on the front surface. A pair of left and right ducts 81 and 82 extend obliquely rearward from the front portion of the upper surface of the main body 2A. From the rear side of the upper surface of the main body 2A, the support portion 8
3 rises in a slightly inclined rearward manner, and the ducts 81 and 82 join the support portion 83. This support 8
The cyclone dust collecting apparatus 100 is supported on the front surface of the No. 3 by being sandwiched between the ducts 81 and 82. In this way, the ducts 81, 82 and the supporting portion 83 surrounding the cyclone dust collecting apparatus 100 prevent the cyclone dust collecting apparatus 100 from falling off or being damaged when the electric vacuum cleaner 1A hits furniture or falls. .

The inside of the ducts 81 and 82 is an air passage. The duct 81 communicates with the connection port 80 and constitutes a part of the intake passage. The duct 82 communicates with the suction side of the electric blower 3 built in the main body 2A. Reference numeral 84 denotes an exhaust port formed in the rear portion of the upper surface of the main body 2A, which communicates with the discharge side of the electric blower 3. Reference numeral 85 is a cord reel. The cord reel 85 is installed in the exhaust flow from the electric blower 3, whereby the cord reel 8 is positively air-cooled, and the cord is prevented from being overheated by the electric current flowing through the electric blower 3. Also the main body 2
A is a pair of left and right large diameter front wheels 86 and one free rear wheel 87.
Is movably supported on the floor surface f.

Next, the structure of the cyclone dust collector 100 will be described with reference to FIGS. In all of these figures, each component is illustrated with the axial direction of the cyclone dust collecting apparatus 100 being vertical. The cyclone dust collector 100 has a substantially cylindrical shape and is arranged with its axis oriented vertically, and is divided into an upper dust collector main body 101 and a lower dust cup 102.

The dust collector main body 101 has a shape like a flat cup that is turned upside down, and a ceiling plate 111 is fixed to a portion slightly inside the lower surface opening 110. On the side surface of the dust collector main body 101, the space 1 above the ceiling plate 111
An outlet 113 communicating with 12 is formed. Outlet 11
3 is joined to the connecting pipe 88 provided inside the support portion 83.
The connecting pipe 88 communicates with the duct 82, and a seal 89 made of an elastic material such as rubber is provided at the end thereof for airtightly joining the outlet 113.

The rim of the dust cup 102 is inserted into the lower surface opening 110 of the dust collector main body 101. A seal 114 made of an elastic material such as rubber is provided inside the lower surface opening 110.
Is fixed, and the dust cup 1 is attached to the seal 114.
The dust cup 102 is airtightly joined to the dust collector main body 101 by pressing the edge portion of 02. The dust cup 102 is connected to the dust collector main body 101 by a connecting means such as a screw or a clamp so as not to fall off.

Dust collector body 101 and dust cup 102
With the cyclone dust collector 100 connected,
When it is seated on the upper surface of A and pressed against the support portion 83, the latch 115 attached to the dust collector main body 101 causes the support portion 83 to move.
The cyclone dust collecting apparatus 100 is connected to the support portion 83 by engaging with the engaging portion 90 of the. The latch 115 is attached by a shaft 116 so as to be rotatable in a vertical plane, and is pushed up to an engagement position by a compression coil spring 117. Engagement can be released by pressing the push button portion 118 provided on the latch 115.

When the cyclone dust collector 100 is connected to the support portion 83, the outlet 113 is joined to the connecting pipe 88 via the seal 89 as described above, and the dust cup 10 is connected.
The inflow port 130 provided on the second side surface is joined to the connecting pipe 91 provided inside the support portion 83. The connecting pipe 91 communicates with the duct 81, and a seal 92 made of an elastic material such as rubber is provided at the end of the connecting pipe 91 for airtightly joining the inlet 130. The inflow port 130 is provided at a position and an angle so as to make a tangent to the inner wall of the dust cup 102.

Inside the main body 2A, the connection port 80 and the inflow port 130 are located far away from each other. Therefore, even if there is a bend (bend) in the intake passage during this period, R can be made large and resistance to the air flow can be made small. The outlet 113 and the suction side of the electric blower 3 are also far apart from each other, and the resistance to the air flow can be reduced for the same reason as above.

The dust cup 102 has a handle 131 on the outer surface thereof, and the upper space of the interior thereof is the separation chamber 13.
2. The lower part is divided into a collection chamber 133 and a lower part. The separation chamber 132 has a cylindrical shape, but the accumulation chamber 133 has an inverted truncated cone shape whose diameter becomes smaller toward the bottom surface. The inflow port 130 belongs to the separation chamber 132.

An exhaust pipe 140 is arranged at the center of the separation chamber 132. The exhaust pipe 140 is a cylindrical member having a closed bottom surface and an open top surface, and a vertical crosspiece 142 and a horizontal crosspiece 143 are provided on the peripheral wall.
A lattice-shaped exhaust port 141 partitioned by is provided. A filter 144, which is a fine mesh made of woven synthetic fiber such as nylon, is attached to the exhaust port 141. The filter 144 is positioned outside the vertical rails 142 and the horizontal rails 143 for the attachment.

The upper surface opening of the exhaust stack 140 is a ceiling plate 111.
The space 112 and the separation chamber 132 are inserted into a connecting pipe 145 provided at the center of the space. The upper end of the exhaust pipe 140 has a male screw portion 146, which is connected to the connecting pipe 145.
The exhaust pipe 140 is attached so as to hang from the ceiling plate 111 by being screwed in (the inner surface is a female screw portion here). A seal 147 made of an elastic material such as rubber is inserted between the exhaust pipe 140 and the ceiling plate 111 to prevent air from leaking into the space 112 from between the male screw and the female screw.

The lower end of the exhaust pipe 140 also has a male screw portion 148, on which the shielding member 150 is attached. The shielding member 150 has a disc shape as shown in FIG.
At the center, a connecting ring 151 having an internal thread portion is formed on the inner surface. The shield member 150 is attached to the exhaust pipe 140 by screwing the connecting ring 151 into the male screw portion 147. In the attached state, the shielding member 150 is located at the boundary between the separation chamber 132 and the accumulation chamber 133.

The diameter of the shielding member 150 is smaller than the inner diameter of the separation chamber 132 or the inner diameter of the inlet of the accumulation chamber 133,
A gap 152 is formed between the outer periphery of the shielding member 150 and the inner wall of the accumulation chamber 133. At the edge of the shielding member 150, a loop-shaped barrier 15 protruding toward the bottom surface of the accumulation chamber 133 is formed.
3 and a loop-shaped barrier wall 154 projecting toward the separation chamber 132 are formed. In addition, the shielding member 150
A plurality of ribs 155 are formed at predetermined intervals on the outer circumference of the. The rib 155 is provided so as to be inclined with respect to the axis of the shielding member 150.

On the surface of the shielding member 150 on the side facing the bottom surface of the accumulating chamber 133, a plurality of separating blades 160 extending toward the bottom surface are provided. The separation blade 160 may be integrally molded with the shielding member 150, or may be separately molded and attached. In the first embodiment, four separating blades 160 are prepared as shown in FIG. 5, and these are arranged radially from the center of the shielding member 150 toward the inner wall of the accumulation chamber 133. A gap 161 is formed between the edge of the separating blade 160 and the inner wall of the collecting chamber 133, and a gap 162 is formed between the lower end of the separating blade 160 and the bottom surface of the collecting chamber 133.

The accumulating chamber 133 has the shape of an inverted truncated cone as described above, but the shape of the separating blade 160 is also similar to this, and the radial distance (distance from the central axis of the shielding member 150 to the edge of the blade is upper part). ) Is large, and this is small at the bottom. In order to obtain such a shape, the edge of the separation blade 160 may be diagonally cut straight,
In the first embodiment, the radial distance is changed stepwise to form a staircase shape.

As seen in FIG. 5, the separation blade 16
The horizontal cross-sectional shape of 0 is not a straight line. Due to the relationship with the swirling airflow, which will be described later, it is curved in an arc shape so that the upwind side is convex and the downwind side is concave. Of these separating blades 160, only one blade (denoted by “160a” to distinguish it from the other) has a wide width and a gap 16 with the inner wall of the accumulating chamber 133.
1 is narrowing. Then, the rib 1 in the vertical direction is formed on the inner wall of the accumulation chamber 133 on the windward side of the separation blade 160a.
34 is formed.

There are threaded portions at the upper end and the lower end of the exhaust pipe 140, respectively, but all of them are designed to reach the limit of screwing at a certain angle. That is, the exhaust stack 140
Is properly attached to the ceiling plate 111, and the shielding member 150 is properly attached to the exhaust pipe 140, so that the separation blade 160a is positioned at a certain angular position in the stacking chamber 133.

Of the walls of the accumulating chamber 133, the separating blade 1
The wall located on the opposite side of 60a is the see-through part 135. To achieve this, dust cup 102
The whole may be molded with transparent plastic, but it is also possible that only the see-through portion 135 is transparent plastic and the remaining portion is opaque plastic.
A dust disposal reference mark 136 is provided at a predetermined height of the see-through part 135. In the first embodiment, a horizontal ridge is formed on the outer surface of the dust cup 102 to form a mark.

A cleaning tool 170 is provided outside the exhaust stack 140. The cleaning tool 170 is one in which brush bristles 171 are planted around the inside of a ring-shaped body, and with the tips of the brush bristles 171 in contact with the filter 144,
It is arranged so as to be located in a plane perpendicular to the axis of the exhaust pipe 140. The rod 172 extends upward from the cleaning tool 170.
The rod 172 penetrates the ceiling plate 111 and the case portion of the dust collector main body 101, extends upward, and is connected to the push button 173. The push button 173 is normally pushed upward by the compression coil spring 174.

Next, the operation of the electric vacuum cleaner 1A will be described. When the electric blower 3 is driven by operating the key of the operation unit 36 with the cyclone dust collector 100 set on the support unit 83, an airflow is generated in the intake passage, and dust is contained from the suction port 7 of the suction port body 6. The airflow is sucked in. The airflow is introduced into the separation chamber 132 from the inflow port 130 via the connection pipe 5, the suction hose 4, the duct 81, and the connection pipe 91. As described above, the inflow port 130 is provided at a position and at an angle so as to make a tangent to the inner wall of the dust cup 102, so that the airflow entering the separation chamber 132 swirls at high speed along the inner wall of the separation chamber 132. To do. The turning direction is counterclockwise when viewed from above. During the turning, the dust in the air flow is pushed toward the inner wall of the separation chamber 132 by the centrifugal force.

The swirling airflow generated in the separation chamber 132 descends and enters the accumulation chamber 133 through the gap 152. The dust is increasingly centrifuged as the airflow continues to swirl. The accumulating chamber 133 has a smaller diameter toward the bottom, which brings about the following effects.

The centrifugal force Z generated in the swirling dust is proportional to the mass m of the dust and the peripheral velocity v ² and inversely proportional to the swirling radius r. That is, the following formula is established. Z = m · v ² / r

As the swirling airflow descends, the peripheral velocity v ² decreases, which is compensated for by the reduction of r. That is, the reduction of the centrifugal force Z can be reduced.

The airflow that swirls and descends as shown by the arrow A in FIG. 4 starts rising when it approaches the bottom surface of the accumulating chamber 133. When the airflow collides with the separation blade 160 as it swirls around the separation blade 160, the airflow changes its direction and dust is further separated. The dust separated by the centrifugal force or by colliding with the separation blade 160 from the air flow falls toward the side near the side wall of the bottom surface of the accumulation chamber 133 and accumulates.

The accumulated dust follows the swirling airflow to form the gap 1
Although it turns around 61, since the gap 161 is narrow at the separation blade 160a, it is caught here and stays there. The accumulated dust grows around the accumulated dust as a core.

On the windward side of the separating blade 160a,
Since the ribs 134 project from the inner wall of the accumulation chamber 133, the air flow meanders at this location, and the dust can be efficiently separated from the air flow. In addition, dust can be quickly accumulated at this location.

The swirling airflow that has turned upward near the bottom of the accumulation chamber 133 rises through the inside of the descending swirling airflow. The dust accumulated on the bottom of the accumulation chamber 133 tries to lift up following the upward swirling airflow, but the shape of the separating blade 160 in which the radial distance is larger toward the upper part brakes the movement of the dust lump. By making the separating blade 160 into a step shape, its function is further strengthened.

The upward swirling airflow approaches the shielding member 150 as shown by an arrow B in FIG. 4, and returns to the separation chamber 132 over the edge of the shielding member 150. When passing over the edge of the shielding member 150,
Due to the presence of the barrier 153, the swirling airflow temporarily changes its direction downwards as shown by the arrow C. By this direction change, a separating force acts on the dust (particularly, a part of the accumulated dust) following the swirling airflow, and Are prevented from rising beyond the shielding member 150.

The upward swirling airflow that has been turned downward by the barrier 153 immediately turns upward, and the shielding member 150
Although it passes through the outer periphery of the rib and enters the separation chamber 132, the rising swirling airflow collides with the rib 155 at this time. The ribs 155 are inclined so as to block the upward swirling airflow, and the upward swirling airflow collides with the ribs 155 to change its direction, at which time the dust that has followed the airflow is separated.

When the swirling air current collides with the rib 155 and the separating blade 160, a torque is generated in the shielding member 150. Since the torque is just in the tightening direction of the screw, the connection between the shielding member 150 and the exhaust pipe 140 and the connection between the exhaust pipe 140 and the ceiling plate 111 do not loosen.

All of the swirling airflow generated in the separation chamber 132 does not enter the accumulation chamber 133, but a part thereof remains in the separation chamber 132. The shield member 1 staying in the separation chamber 132
The air flow swirling above 50 hits the barrier 154 and is indicated by the arrow D.
Ascending airflow. Therefore, even if the dust, particularly the dust that is long and continuous in the form of a thread, follows the upward swirling airflow that returns to the separation chamber 132 through the outer periphery of the shielding member 150, it is caused by the upward airflow of arrow D to the exhaust pipe 140. It is prevented from approaching and is not attached to or wrapped around the exhaust stack 140.

The swirling airflow returned to the separation chamber 132 approaches the exhaust pipe 140 while gradually reducing the swirling radius, and is finally sucked into the exhaust pipe 140 from the exhaust port 141. If dust remains in the air stream, it will be captured by the filter 144. The airflow that has escaped into the exhaust stack 140 is the space 112, the outlet 113, and the connecting pipe 8.
8, it is sucked into the electric blower 3 through the duct 82, and is discharged from the exhaust port 84.

The state in which dust is accumulated in the accumulation chamber 132 is observed from the see-through part 135, and when the accumulated amount reaches the dust disposal reference mark 136, dust is discarded. At this time, if the dust disposal guide mark 136 is located on the separation blade 160a, this is a place where dust is piled up particularly high. Therefore, it is judged that the accumulation of dust reaches the dust disposal guide mark, and the dust cup 102 is removed. Although it is good, it may cause a situation in which only a small amount of dust was actually accumulated, but since it was placed on the side opposite to the separation blade 160a, the difference between the actual accumulation amount and the judgment from the outside is reduced. .

The push button 11 of the latch 115 is used to dispose of the trash.
8 is pushed to remove the cyclone dust collector 100 from the main body 2A, and the dust cup 102 is removed from the dust collector main body 101 on an appropriate dust container. Then, the dust cup 102 is tilted by holding the handle 131 and the dust is discharged. Since the handle 131 is on the side where the inflow port 130 exists, the handle 1
Even if the dust cup 102 is tilted while holding 31, the inlet 13
No dust spills from zero. Dust cup 102
After emptying the dust cup 102 again, the dust collector main body 1
01, and the cyclone dust collector 100 is connected to the main body 2A to prepare for the next use.

Most of the dust in the air stream is separated by centrifugal force,
It remains in the collecting chamber 133, but the filter 14 is still inside.
Some are captured in 4. Therefore, when it is used for a long period of time, dust gradually adheres to the outer surface of the filter 144, and the suction force decreases. Therefore, due to the adhesion of dust, the filter 14
When 4 is clogged, the cleaning tool 170 is moved to eliminate the clogging. When the push button 173 is pressed down, the cleaning tool 170 slides in parallel with the axis of the exhaust pipe 140, and dust is scraped off by the brush bristles 171 contacting the filter 144. When the finger is released from the push button 173 after the push button 173 is fully lowered, the cleaning tool 170 is raised by the compression coil spring 174 and returns to the original position. This movement also scrapes dust from the filter 144. In this way, the cleaning tool 170 is moved up and down several times to clean the exhaust pipe 140.

When dust enters the eyes of the filter 144 and cannot be removed by the cleaning tool 170, the dust cup 102 is removed, the shielding member 150 is separated from the exhaust pipe 140, and then the exhaust pipe 140 is placed on the ceiling. Board 1
Then, the exhaust pipe 140 is washed with water to completely remove dust. After that, the exhaust pipe 140 is dried and set again on the ceiling plate 111, and the shielding member 150 and the dust cup 1
02 is also reattached as before.

Since it is difficult for humans to judge the decrease in the suction force, a notification means is provided to automatically notify the decrease in the suction force. In the first embodiment, a notification lamp 93 is provided on the front portion of the main body 2A and at a place on the connection port 80 that is easily noticeable. When the electric blower 3 is operated in a state where a large amount of dust is attached to the surface of the filter 144 and the ventilation resistance is increased, the air pressure between the exhaust stack 140 and the electric blower 3 becomes lower than usual. Further, the load on the electric blower 3 is reduced, and the current flowing through the electric blower 3 is reduced. The sensor detects the decrease in atmospheric pressure or the decrease in current, and the notification lamp 9
Turn on 3.

Now, when the filter 144 is attached to the outside of the vertical rail 142 and the horizontal rail 143,
The shapes of the vertical rails 142 and the horizontal rails 143 inevitably stand out on the outer surface of No. 4. The shape of the crosspiece affects the movement of the cleaning tool.
That is, the cleaning tool 170 is arranged so as to be located in a plane perpendicular to the axis of the exhaust pipe 140 as in the first embodiment.
In the case where the cleaning tool 170 slides in parallel with the axis of the exhaust pipe 170, when the cleaning tool 170 gets over the horizontal rail 143, the resistance increases at once and it becomes difficult to move. Therefore, in the second embodiment and the third embodiment of the present invention, an improvement in the configuration of the crosspiece is proposed.

FIG. 8 shows an exhaust stack 140a according to the second embodiment of the present invention. The horizontal rail 143a of the exhaust stack 140a does not exist in a plane perpendicular to the axis of the exhaust stack 140a,
It is assumed to exist in the plane that intersects the axis diagonally. Therefore, when the cleaning tool 170 is slid parallel to the axis of the exhaust pipe 140, only a part of the horizontal rail 143a is fitted to the brush bristles 171 and the sliding point of the cleaning tool 170 is also changed while changing the matching point. It will be. That is, the cleaning tool 170 receives a little resistance from the horizontal rail 143a during the moving stroke, and a large load is not generated at a specific point at once, so that the cleaning tool 170 can be moved smoothly.

FIG. 9 shows an exhaust stack 140b according to the third embodiment of the present invention. The exhaust pipe 1 is provided outside the exhaust pipe 140b.
A cleaning tool 170a which is arranged so as to be located in a plane including the axis of 40b and can be rotated around the exhaust pipe 140b.
Is provided. The brush bristles 171 of the cleaning tool 170a are arranged parallel to the axis of the exhaust pipe 140b and move in a plane perpendicular to the axis. In this configuration, the vertical bar has the brush bristles 171.
Resistance to the movement of. Therefore, the vertical rail 142a is formed in a plane that obliquely intersects the axis of the exhaust pipe 140b. Accordingly, the resistance of the vertical bar 142a is not applied to the cleaning tool 170a at one time, and the cleaning tool 170a can smoothly rotate.

In the second and third embodiments, the "face obliquely intersecting the axis" does not necessarily have to be a plane. The objective is achieved even if the surface is curved or wavy, resulting in a complicated curve where the geometric shape of the crosspiece deviates from a simple helical line. Further, in the second embodiment, only the horizontal rails and only the vertical rails are placed diagonally in the third embodiment, but it is also possible to make the horizontal rails and the vertical rails diagonal.

Although various embodiments of the present invention have been described above, other various modifications can be made without departing from the scope of the invention.

[0067]

The present invention has the following effects.

In the present invention, dust is sucked from the suction port by the air flow generated by the operation of the electric blower, and the sucked air flow is introduced into the cyclone dust collecting device through the suction passage communicating with the suction port, and the cyclone dust collecting device is introduced. In an electric vacuum cleaner that swirls the airflow in the separation chamber of the device to separate the dust and collects the separated dust in the accumulation chamber of the same cyclone dust collector, a shielding member is arranged at the boundary between the separation chamber and the accumulation chamber. , This shielding member is shaped so that a predetermined gap is created between the outer periphery of the shielding member and the inner wall of the accumulating chamber, and a loop-shaped barrier protruding toward the bottom of the accumulating chamber is formed at the edge of the shielding member. When the swirling airflow generated in the chamber enters the accumulating chamber through the gap between the shielding member and the inner wall of the accumulating chamber and drops dust in the accumulating chamber and then returns to the separating chamber, the swirling airflow returning to the separating chamber is dusted. Included Long as, in its dust is separated when changing directions to exceed the air flow barrier, remain in the integrated chamber. This improves the dust separation efficiency.

Further, according to the present invention, dust is sucked from the suction port by the air flow generated by the operation of the electric blower, and the sucked air flow is introduced into the cyclone dust collecting device through the suction passage communicating with the suction port, and the cyclone collecting device is used. In a vacuum cleaner that separates dust by swirling an air flow in the separation chamber of the dust device and accumulates the separated dust in the accumulation chamber of the same cyclone dust collector, a shielding member is arranged at the boundary between the separation chamber and the accumulation chamber. However, this shielding member has a shape in which a predetermined gap is formed between the outer periphery of the shielding member and the inner wall of the accumulation chamber, and a loop-shaped barrier protruding toward the separation chamber is formed at the edge of the shielding member. The airflow that swirls along the shielding member in the room becomes an ascending airflow at the barrier, and removes dust that extends from the collection chamber and approaches the center of the separation chamber. This can prevent dust in the accumulation chamber from entering the separation chamber.

Further, according to the present invention, dust is sucked from the suction port by the air flow generated by the operation of the electric blower, and the sucked air flow is introduced into the cyclone dust collecting device through the suction passage communicating with the suction port, and the cyclone collecting device is used. In a vacuum cleaner that separates dust by swirling an air flow in the separation chamber of the dust device and accumulates the separated dust in the accumulation chamber of the same cyclone dust collector, a shielding member is arranged at the boundary between the separation chamber and the accumulation chamber. The shielding member has a shape such that a predetermined gap is formed between the outer periphery of the shielding member and the inner wall of the accumulating chamber, and a plurality of the shielding members are arranged at a predetermined interval on the outer periphery of the shielding member so as to shield the swirling air flow returning from the accumulating chamber to the separation chamber. Since each rib is formed, when the swirling airflow generated in the separation chamber enters the accumulation chamber through the gap between the shielding member and the inner wall of the accumulation chamber, dust is collected in the accumulation chamber and then returns to the separation chamber, To If it contains dust whirling air current to be changed, the dust is separated in performing the turning air flow collides with the rib, it remains in the integrated chamber. This improves the dust separation efficiency.

Further, in the present invention, dust is sucked from the suction port by the air flow generated by the operation of the electric blower, and the sucked air flow is introduced into the cyclone dust collecting device through the intake passage communicating with the suction port, and the cyclone collecting device is provided. In a vacuum cleaner that separates dust by swirling an air flow in the separation chamber of the dust device and accumulates the separated dust in the accumulation chamber of the same cyclone dust collector, a shielding member is arranged at the boundary between the separation chamber and the accumulation chamber. The shielding member has a shape in which a predetermined gap is formed between the outer periphery of the shielding member and the inner wall of the accumulating chamber, and the surface facing the bottom surface of the accumulating chamber is provided with a plurality of separation blades extending toward the bottom surface. These separating blades are arranged radially from the center of the shielding member toward the inner wall of the accumulation chamber, and are formed so that a predetermined gap is formed between the edge and the inner wall of the accumulation chamber. , Whirling air current that has entered the integrated chamber through the gap between generated in separation chamber shield member and the integrated indoor wall dust is separated when changing directions collide with the separating blade integrated chamber. This improves the dust separation efficiency.

Further, in the present invention, the accumulating chamber has a shape in which it is narrowed in the shape of an inverted truncated cone from the inlet to the bottom surface, and the separating blade is also shaped accordingly. The turning speed is maintained even when approaching, and the reduction in centrifugal force is covered. As a result, the centrifugal separation function is maintained over a wide area of the accumulation chamber, and the dust separation efficiency is improved.

Further, in the present invention, since one of the separating blades has a narrower gap with the inner wall of the collecting chamber than the other separating blades, dust is caught and accumulated in the narrow gap. Then, the accumulation of dust grows with this as a nucleus. As a result, the dust forms a high-density lump, and the dust collecting ability of the collecting chamber is improved.

Further, in the present invention, since the accumulation chamber wall located on the opposite side of the separation blade having a narrow gap with the accumulation chamber inner wall is a see-through portion and the see-through portion is provided with a dust disposal reference mark, dust is not collected. The dust disposal time is determined by observing the dust amount at a place other than the place where the dust is accumulated and accumulated, and the difference between the determination and the actual accumulation amount can be reduced.

Further, in the present invention, dust is sucked from the suction port by the air flow generated by the operation of the electric blower, and the sucked air flow is introduced into the cyclone dust collecting device through the intake passage communicating with the suction port, and the cyclone collecting device is provided. In an electric vacuum cleaner in which the air flow is swirled in the separation chamber of the dust device to separate the dust and the separated dust is accumulated in the accumulation chamber of the same cyclone dust collector, an exhaust pipe is arranged at the center of the separation chamber and A lattice-shaped exhaust port is provided on the peripheral wall of the cylinder, and a filter is attached to the exhaust port, and a cleaning tool that contacts and slides on the filter is arranged on the outside of the exhaust port. Since the crosspiece that forms the cross section exists on the plane that diagonally intersects the axis of the exhaust pipe, when the cleaning tool gets over the crosspiece, no load is generated at one time and the cleaning tool slides. Resistance is reduced at the time of. This makes it possible to recover the suction force with a small amount of labor.

[Brief description of drawings]

FIG. 1 is an overall side view of an electric vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a side view of a main body portion of the electric vacuum cleaner.

FIG. 3 is a perspective view of the body of the electric vacuum cleaner.

FIG. 4 is a vertical cross-sectional view of a cyclone dust collector mounted on the vacuum cleaner.

5 is a cross-sectional view taken along line MM in FIG.

FIG. 6 is a perspective view of a shielding member in the cyclone dust collector.

FIG. 7 is a vertical sectional view of an exhaust stack in the cyclone dust collector.

FIG. 8 is a vertical sectional view of an exhaust stack according to a second embodiment of the present invention.

FIG. 9 is a vertical sectional view of an exhaust stack according to a third embodiment of the present invention.

FIG. 10 is an overall side view of a conventional cyclone dust collecting type vacuum cleaner.

FIG. 11 is a vertical sectional view of a conventional cyclone dust collector.

[Explanation of symbols]

1A vacuum cleaner 2A body 3 electric blower 4 Suction hose 5 connection pipe 6 Suction mouth 7 Suction port 100 cyclone dust collector 101 Dust collector body 102 dust cup 132 separation room 133 collection room 135 Transparent part 136 Dust disposal standard mark 140 Exhaust stack 141 exhaust port 142, 142a Vertical beam 143, 143a horizontal rail 144 filter 150 Shield member 152 Gap 153 Barrier 154 Barrier 155 ribs 160, 160a Separation blade 161 gap 170, 170a Cleaning tool

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shigenori Hado             22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka             Inside the company F-term (reference) 3B062 AH02 AH05

Claims (8)

[Claims] 1. A dust is sucked from an inlet by an air flow generated by the operation of an electric blower, and the sucked air is introduced into a cyclone dust collector through an intake passage communicating with the inlet, and the cyclone dust collector In an electric vacuum cleaner in which dust is separated by swirling an air flow in a separation chamber and the separated dust is accumulated in the accumulation chamber of the same cyclone dust collector, a shielding member is arranged at the boundary between the separation chamber and the accumulation chamber. The shielding member has a shape in which a predetermined gap is formed between the outer periphery of the shielding member and the inner wall of the accumulation chamber, and a loop-shaped barrier protruding toward the bottom surface of the accumulation chamber is formed at the edge thereof. Vacuum cleaner. 2. A dust is sucked from an inlet by an air flow generated by the operation of an electric blower, and the sucked air is introduced into a cyclone dust collector through an intake passage communicating with the suction port. In an electric vacuum cleaner in which dust is separated by swirling an air flow in a separation chamber and the separated dust is accumulated in the accumulation chamber of the same cyclone dust collector, a shielding member is arranged at the boundary between the separation chamber and the accumulation chamber. The shielding member has a shape in which a predetermined gap is formed between the outer periphery of the shielding member and the inner wall of the accumulation chamber, and a loop-shaped barrier protruding toward the separation chamber is formed at the edge of the shielding member. Vacuum cleaner. 3. Dust is sucked from the suction port by the air flow generated by the operation of the electric blower, and the sucked air flow is introduced into the cyclone dust collecting device through an intake passage communicating with the suction port. In an electric vacuum cleaner in which dust is separated by swirling an air flow in a separation chamber and the separated dust is accumulated in the accumulation chamber of the same cyclone dust collector, a shielding member is arranged at the boundary between the separation chamber and the accumulation chamber. The shielding member has a shape such that a predetermined gap is formed between the outer periphery of the shielding member and the inner wall of the accumulating chamber, and a plurality of ribs are formed on the outer periphery of the shielding member at predetermined intervals so as to block the swirling air flow returning from the accumulating chamber to the separation chamber. An electric vacuum cleaner characterized by being formed. 4. A dust is sucked from an inlet through an air flow generated by the operation of an electric blower, and the sucked air is introduced into a cyclone dust collector through an intake passage communicating with the suction port. In an electric vacuum cleaner in which dust is separated by swirling an air flow in a separation chamber and the separated dust is accumulated in the accumulation chamber of the same cyclone dust collector, a shielding member is arranged at the boundary between the separation chamber and the accumulation chamber. The shielding member has a shape in which a predetermined gap is formed between the outer periphery of the shielding member and the inner wall of the accumulating chamber, and a plurality of separation blades extending toward the bottom face are provided on the surface facing the bottom face of the accumulating chamber. The blades are arranged radially from the center of the shielding member toward the inner wall of the collection chamber,
An electric vacuum cleaner having a shape in which a predetermined gap is formed between the edge and the inner wall of the collection chamber. 5. The collecting chamber according to claim 4, wherein the accumulating chamber has a shape that is narrowed in an inverted truncated cone shape from the inlet to the bottom surface, and the separating blade has a shape conforming to that. Vacuum cleaner. 6. The vacuum cleaner according to claim 4, wherein one of the separating blades has a narrower gap with the inner wall of the collecting chamber than the other separating blades. . 7. The collecting chamber wall located on the side opposite to the separating blade having a narrow gap with the collecting chamber inner wall is a see-through portion, and a dust disposal reference mark is provided on the see-through portion. Item 7. The vacuum cleaner according to Item 6. 8. A dust is sucked from an inlet by an air flow generated by the operation of an electric blower, and the sucked air is introduced into a cyclone dust collector through an intake passage communicating with the inlet, and In an electric vacuum cleaner in which an air flow is swirled in a separation chamber to separate dust and the separated dust is accumulated in a collection chamber of the same cyclone dust collector, an exhaust pipe is arranged at the center of the separation chamber, and a peripheral wall of the exhaust pipe is arranged. Is provided with a lattice-shaped exhaust port, and a filter is attached to the exhaust port, and a cleaning tool that slides in contact with the filter is arranged on the outside of the exhaust pipe, and the exhaust port has a lattice shape. An electric vacuum cleaner characterized in that the crosspiece is present in a plane that obliquely intersects the axis of the exhaust stack.