JP3905046B2 - Electric vacuum cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dust collection structure for a vacuum cleaner.
[0002]
[Prior art]
The structure of the conventional vacuum cleaner is demonstrated using FIG. A dust-collecting chamber 31 with a bottom is provided, and an intake port 32 for sucking air therein is provided on the side wall of the dust-collecting chamber 31 in a tangential direction. A lid 34 is provided so as to cover the upper end opening 33 of the dust collection chamber 31, and an exhaust port 35 is provided in the lid 34. A filter 36 is attached so as to cover the upper end opening 33 of the dust collection chamber 31. When the electric blower 37 is operated, dust is sucked from the suction portion 38, sucked into the dust collecting chamber 31 from the suction port 32, centrifuged in the dust collecting chamber 31, and exhausted through the filter 36 and discharged from the exhaust port 35. (See Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-104223
[Problems to be solved by the invention]
However, in the above-described conventional configuration, dust sucked from the air inlet 32 may adhere to the filter 36 and be clogged, and the suction force may be reduced without the dust being sufficiently sucked into the dust collection chamber 31. In order to prevent this clogging, the area of the filter 36 may be increased. However, there is a problem that the dust collection chamber 31 itself becomes large and the electric vacuum cleaner itself becomes large.
[0005]
This invention solves the said subject, and it aims at providing the vacuum cleaner which improved dust collection performance and realized miniaturization by preventing that a suction force falls rapidly.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes an electric blower chamber that includes an electric blower that generates suction air, and a dust separation accumulation unit that can be attached to and detached from the electric blower chamber, and the dust separation accumulation unit includes dust. A first dust separation unit that has a first inlet through which suction air flows, and a second dust inlet that swirls the suction air; and a second inlet through which suction air that has flowed into the first dust separation unit flows. the second dust separator provided with a filter in the flow inlet, communicates the said second dust separator and the electric blower and the first communication port provided with a filter communicates the first dust separator and the electric blower The first and second dust separators have a substantially cylindrical wall surface located at a distance from each other, and the second dust separator. forming said second inlet on the wall portion of the The suction air sucked into the one dust separation part performs dust separation by turning along the outer periphery of the wall surface of the second dust separation part, and the suction air sucked into the second dust separation part is the second The dust separation is performed by turning along the inner periphery of the wall surface of the dust separation unit, the second inlet is disposed at a position not facing the first inlet, and the dust collecting lid is It is configured to be detachable from the second dust separation unit, and the sucked dust can be separated in two stages, and it is possible to obtain a dust collecting performance that is difficult to clog and the suction force is not easily lowered.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes an electric blower chamber having a built-in electric blower that generates suction air, and a dust separation and accumulation unit that can be attached to and detached from the electric blower chamber, and the dust separation and accumulation unit includes dust. A first dust separation unit that has a first inlet through which suction air flows, and a second dust inlet that swirls the suction air; and a second inlet through which suction air that has flowed into the first dust separation unit flows. A second dust separation unit provided with a filter at the inlet, the second dust separation unit and the electric blower communicated with each other, a first communication port provided with a filter, the first dust separation unit and the electric blower communicated with each other. The first and second dust separators have a substantially cylindrical wall surface located at a distance from each other, and the second dust separator. forming said second inlet on the wall portion of the first The suction air sucked into the dust separation portion performs dust separation by swirling along the outer periphery of the wall surface of the second dust separation portion, and the suction air sucked into the second dust separation portion is the second dust dust. The dust is separated by swirling along the inner periphery of the wall surface of the separating portion, the second inlet is disposed at a position not facing the first inlet, and the dust collecting lid is 2 It is configured to be detachable from the dust separation unit.
[0008]
Thereby, the sucked dust can be separated in two stages, and it is possible to obtain a dust collecting performance that is hard to be clogged and in which the suction force is not easily lowered.
[0009]
In addition, the dust collection lid is configured to be detachable from the second dust separation part, so that the inside and maintenance of the second dust separation part 7 can be easily performed.
[0010]
According to the second aspect of the present invention, the suction air flowing into the first dust separation part forms a guide part for turning, and the guide part can start turning smoothly.
[0011]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0012]
FIG. 1 is a front view of the vacuum cleaner.
[0013]
This vacuum cleaner has a suction device 1 for sucking dust on the floor at the bottom, a handle portion 2 having a handle at the top, and an electric blower for generating suction air, and is fixed to the handle portion 2 to provide an electric blower chamber. 3. Below the electric blower chamber 3, there is a dust separation accumulation unit 4 that can be attached to and detached from the electric blower chamber 3, a suction passage that communicates the dust separation accumulation unit 4 and the suction tool 1, and the suction tool 1 and an extension pipe 5 connecting the handle portion 2. Further, the handle portion 2 is provided with a discharge hole (not shown) through which the dust sucked from the suction tool 1 and passed through the extension tube 5 is discharged to the dust separation and accumulation portion 4.
[0014]
FIG. 2 shows a first dust separation unit 6, a second dust separation unit 7, and a dust collection lid 8 that constitute the dust separation accumulation unit 4 of the vacuum cleaner. The first dust separation part 6 has a substantially cylindrical wall in the horizontal direction at the upper part, and the lower part is formed in a substantially hemispherical bottom. A first inflow port 9 having a substantially circular cross section is provided in a part of the wall of the first dust separation unit 6 at a position facing the discharge hole of the handle unit 2. The second dust separation unit 7 has a substantially cylindrical wall having a smaller diameter than the wall of the first dust separation unit 6 and has a bottom with an upper end opening. The dust collecting lid 8 is provided in a substantially cylindrical shape with a bottom provided with a soft material such as an elastomer on the outer periphery, and the outer diameter of the soft material is in close contact with the inner periphery of the wall surface portion 13 of the first dust separation unit 6. It is formed in a diameter that can be made. Reference numeral 10 denotes an inflow port that guides dust inward of the second dust separation unit 7, and is provided at a position that does not face the first inflow port 9.
[0015]
3, 4, 5, and 6 are a top view, a bottom view, a front view, and a side view of the second dust separator 7 of the vacuum cleaner, respectively. 10 is an inflow port for guiding dust inward of the second dust separation unit 7, 14 is a substantially cylindrical wall surface provided in the second dust separation unit, and 11 is a first inflow port 9 of the first dust separation unit 6. A guide portion having a gently curved surface provided at an opposing position and in contact with the outer periphery of the wall surface portion 14, 15 is a position where a part of the wall surface portion 14 is cut out and provided on the bottom surface of the second dust separation portion 7. 1 opening and 16 are on the outer periphery of the first opening 15, and the wind sucked into the second dust separation part 7 from the second inlet 10 swirls along the inner periphery of the wall surface part 14. A guide portion 17 provided in the same shape as the wall surface portion 14 on the downstream side of the swirling flow is a claw portion that engages with the dust collecting lid 8. Further, a straight line connecting the circle center of the wall surface portion 14 and the center of the first opening 15, and a straight line connecting the circle center of the wall surface portion 14 and the center of the second inlet 10 provided in the second dust separation portion 7. The angle θ to be formed is set at an angle equal to or greater than a right angle. Reference numeral 21 denotes a second opening that communicates the inside of the second dust separator 7 and the first opening 15.
[0016]
FIG. 7 is a bottom view of the dust collecting lid 8. 12 is a first communication port that communicates the suction port of the electric blower chamber 3 and the inside of the second dust separation unit 7, 18 is an engagement portion of the claw portion 17 of the second dust separation unit 7, and 19 is the first The electric blower chamber is located on the downstream side of the swirling flow in which the air flow sucked into the first dust separating portion 6 from the one inlet 9 swirls along the outer periphery of the wall surface portion 14 of the second dust separating portion 7. 3 and a second communication port that communicates the inside of the first dust separation unit 6.
[0017]
FIG. 8 is a top view of the first dust separator 6. Reference numeral 20 denotes a dust accumulating unit that is opposed to the first opening 15 of the second dust separating unit 7 and has a height that makes contact with the outer periphery of the first opening 15.
[0018]
FIGS. 9 and 10 are a bottom view and a front view of unit parts of the second dust separator and the dust collecting lid, respectively.
[0019]
FIGS. 11 and 12 are a bottom view and a perspective view of unit parts of the first dust separator, the second dust separator, and the dust collecting lid, respectively. The wall surface 13 of the first dust separator 6 is substantially cylindrical in the horizontal direction, and the distance d between the wall surface 14 of the second dust separator 7 and the substantially cylindrical wall surface 14 is substantially cylindrical of the second dust separator 7. It forms so that it may become small as it becomes the downstream of the swirl flow swirled along the outer periphery of the shape wall surface part 14.
[0020]
The operation and action of the above configuration will be described. The dust sucked from the suction tool 1 passes through the extension pipe part 5, passes through a discharge hole (not shown) of the handle part 2, and then enters the first dust separation part 6 from the first inlet 9. Sucked. The suction air containing dust sucked into the first dust separation part from the first inlet 9 smoothly moves the outer periphery along the outer periphery of the wall surface part 14 of the second dust separation part 7 by the gently curved guide part 11. Start turning.
[0021]
The dust that has started swirling eventually reaches the second inlet 10, and the dust having a large mass is further guided to the back of the first dust separation unit 6 by the centrifugal force of the swirling flow, and the dust having a small mass is the second dust. The air is sucked into the second dust separation unit 7 through the inlet 10, and the first-stage dust separation is performed. In this first stage dust separation, the distance d formed by the wall surface portion of the first dust separation portion 6 and the wall surface portion 14 of the second dust separation portion 7 is on the outer periphery of the wall surface portion 14 of the second dust separation portion 7. Since it forms so that it may become the downstream of the swirling flow swirling along, it can carry out efficiently by not reducing the speed of swirling flow as much as possible. It should be noted that dust having a large mass guided to the back of the first dust separator 6 is accumulated in the bottom of the first dust separator 6 when the swirl flow is eventually weakened.
[0022]
By the way, the dust having a small mass sucked inward from the second inlet 10 of the second dust separation part 7 starts to turn around the inner periphery of the wall surface part 14, and the position where the wall surface part 14 is notched ( The second opening 21) is guided to the first opening 15 and is accumulated in the communicating dust accumulating part 20, whereby the second stage dust separation is performed. Also, the dust that tries to pass through the first opening 15 due to the momentum of the swirling flow is blocked by the guide portion 16 and loses its speed, and then passes through the first opening 15 and the dust accumulation portion. 20 is accumulated. The suction air from which the dust has been removed swirls in the second dust separator, and is then discharged from the dust separator accumulator 4 through the first communication port 12 and passes through the electric blower chamber 3 to be connected to the electric blower chamber. 3 is discharged to the outside of the machine body through the exhaust port provided in 3.
[0023]
The first communication port 12 is provided with a breathable filter to prevent fine dust from entering the electric blower, and the second inlet 10 of the second dust separator 7 is provided with a breathable filter. The size of the dust sucked into the second dust separation unit is limited, and the coarseness of the filter of the first communication port 12 is equal to or smaller than the coarseness of the filter of the second inlet 10. As a result, the pressure loss of the filter at the second inlet 10 can be made equal to or less than the pressure loss of the filter at the first communication port 12, and the dust suction to the second dust separator 7 can be more reliably performed.
[0024]
In addition to the first communication port 12, a second communication port 19 that communicates the inside of the first dust separation unit 6 with the electric blower chamber 3 is provided in the dust collection lid 8. Since the suction area is increased, clogging at each communication port and inlet is further reduced. As a result, after being separated at the second inlet 10 of the second dust separator 7, it is accumulated in the first dust separator 7. More dust can be generated. Further, a filter having air permeability is also provided in the second communication port 19, and the roughness of the filter is equal to or more than the roughness of the filter provided in the inlet 10 of the second dust separator 7. By enlarging, more suction air is guided to the first dust separation unit 6, and clogging of the second inlet 10 of the second dust separation unit 7 is further reduced, thereby further reducing the air volume due to the amount of suction dust. In addition to being able to delay, the amount of dust sucked and accumulated in the first dust separator 6 can be further increased.
[0025]
By the way, the 2nd dust separation part 7 can be engaged with the engagement part 18 of the dust collection cover 8 by the nail | claw part 17, and can be mounted | worn detachably. Further, the dust collecting lid 8 can be detachably mounted by the outer peripheral portion thereof being in close contact with the inner periphery of the wall surface portion 13 of the first dust separating portion 6. Therefore, the coarse dust accumulated in the first dust separating unit 6 and the fine dust accumulated in the dust accumulating unit 20 provided on the inside thereof are simultaneously removed by removing the dust collecting lid 8 from the first dust separating unit 6. It can be easily disposed of, and even if dust adheres to the second inlet 10, maintenance such as removal can be easily performed.
[0026]
Further, since the second dust separation unit 7 is also detachable from the dust collection lid 8, the inside of the second dust separation unit 7 is cleaned, and in the unlikely event that dust is collected, the first communication port 12 and the second communication port 19 of the dust collection lid 8 are used. Even if it adheres to the surface, maintenance such as removal can be easily performed.
[0027]
In the present embodiment, the broom type vacuum cleaner is described, but the same configuration can be adopted for general vacuum cleaners in general regardless of the type or the form of the power source.
[0028]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the vacuum cleaner which improved dust collection performance by preventing suction force falling rapidly and implement | achieved size reduction can be provided.
[Brief description of the drawings]
FIG. 1 is a front view of a vacuum cleaner illustrating an embodiment of the present invention. FIG. 2 is a schematic configuration diagram of the dust separation accumulation unit. FIG. 3 is a top view of the second dust separation unit. Bottom view of the second dust separator [Fig. 5] Front view of the second dust separator [Fig. 6] Side view of the second dust separator [Fig. 7] Bottom view of the dust collecting lid [Fig. Top view of the first dust separation part [FIG. 9] Bottom view of the unit parts of the second dust separation part and the dust collection lid [FIG. 10] Front view of the unit parts of the second dust separation part and the dust collection lid [FIG. 11] Bottom view of unit parts of the first dust separation unit, second dust separation unit and dust collection lid. FIG. 12 is a perspective view of unit parts of the first dust separation unit, second dust separation unit and dust collection lid. FIG. 13 is a schematic diagram of a conventional vacuum cleaner [Explanation of symbols]
DESCRIPTION OF SYMBOLS 4 Dust separation accumulation | storage part 6 1st dust separation part 7 2nd dust separation part 8 Dust collection lid | cover 9 1st inflow port 10 2nd inflow port 12 1st communication port 15 Opening part 20 Dust accumulation | storage part

Claims (2)

An electric blower chamber having a built-in electric blower for generating suction air; and a dust separation and accumulation section that can be attached to and detached from the electric blower chamber. The dust separation accumulation section has a first inlet through which suction air containing dust flows. And a second dust separation part having a first dust separation part for rotating the suction air and a second inlet for allowing the suction air flowing into the first dust separation part to flow into the second inlet. A dust collecting lid having a first communication port in which a filter is provided by communicating the second dust separation unit and the electric blower, and a second communication port in which the first dust separation unit and the electric blower are communicated And the first and second dust separating portions have a substantially cylindrical wall surface portion located at a distance from each other, and the second inlet is formed in the wall surface portion of the second dust separating portion. and, suction air sucked into the first dust separation portion The dust is separated by swirling along the outer periphery of the wall surface of the second dust separator, and the suction air sucked into the second dust separator is along the inner periphery of the wall of the second dust separator. performs dust separation by pivoting Te, and with disposing the second inlet to a position not opposed to the first inlet, and constitutes the current Chirifuta detachably to the second dust separator Electric vacuum cleaner.   The vacuum cleaner according to claim 1, wherein the suction air flowing into the first dust separation part forms a guide part for turning.

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