JP4195982B2 - 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, the dust sucked from the intake port 32 gradually accumulates and accumulates in the dust collecting chamber 31, adheres to the filter 36, becomes clogged, and the suction force is not sufficiently sucked into the dust collecting chamber 31. There was a decrease. 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 sucks suction air containing dust from the first inlet and separates the dust from the suction air via the substantially arc-shaped second inlet covered with a filter. A dust separation unit for collecting, a centrifugal separation unit disposed in the dust separation unit , for centrifuging dust from suction air containing dust after passing through the second inflow port; and the centrifugal separation unit. and the wall surface of the substantially cylindrical shape, is provided inwardly of the wall portion, pivot for turning the suction air containing dust flowing from said centrifugal separation section and the second inlet along the inner wall of the wall portion of the A substantially arc-shaped swivel portion provided to form a passage, a fine dust accumulation portion for accumulating dust separated by the centrifugal separation portion, and provided on the outside of the swivel portion and on the bottom surface of the centrifugal separation portion. An opening communicating with the fine dust accumulating portion, and an intake downstream of the centrifugal separation portion Disposed on the top surface is provided with a dust collecting cover having a communication port communicating with the electric blower inside of the centrifugation unit, the second inlet is substantially cylindrical shape provided on the centrifugation unit An end portion of the swirl portion on the intake downstream side of the second inlet and a tangent line of the end portion of the swirl portion on the intake downstream side of the opening portion. As a configuration located within the range, the suction air containing the dust flowing into the centrifugal separation section is securely swirled, the dust is centrifuged and the filter covering the second inlet is cleaned, and the centrifuged dust is surely removed. A vacuum cleaner that directs suction air that has accumulated in the fine dust accumulation portion toward the opening and removed the dust from the communication port to the electric blower, and is an end portion on the downstream side of the intake of the swivel portion Is located downstream of the inlet with respect to the intake. Suction air containing more inlet has flowed into the centrifuge unit dust, to reliably pivot along the pivot portion, it is possible to clogging hardly attractive force obtain a rapid reduction difficult dust collection performance.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, suction air containing dust is sucked from the first inflow port, and dust is separated from the suction air through the substantially arc-shaped second inflow port covered with a filter. A dust separation unit for collecting, a centrifugal separation unit disposed in the dust separation unit , for centrifuging dust from suction air containing dust after passing through the second inflow port; and the centrifugal separation unit. and the wall surface of the substantially cylindrical shape, is provided inwardly of the wall portion, pivot for turning the suction air containing dust flowing from said centrifugal separation section and the second inlet along the inner wall of the wall portion of the A substantially arc-shaped swivel portion provided to form a passage, a fine dust accumulation portion for accumulating dust separated by the centrifugal separation portion, and provided on the outside of the swivel portion and on the bottom surface of the centrifugal separation portion. An opening communicating with the fine dust accumulating section, and an intake downstream side of the centrifugal separation section. That is disposed on the top surface, and a dust collecting cover having a communication port communicating with the electric blower inside of the centrifugation unit, the second inlet is a substantially cylindrical shape provided on the centrifugation unit provided on the wall portion, the end portion of the intake downstream side of the pivot portion, the with second position from the inlet to the intake downstream side, the tangent of the end portion of the intake downstream of the swirl section, the range of the opening As a configuration located inside, the suction air containing dust flowing into the centrifuge part is reliably swirled,
Centrifuge the dust and clean the filter that covers the second inlet. Accumulate the centrifuged dust toward the opening and store it in the fine dust accumulation part. The vacuum cleaner is directed to the electric blower from the air inlet, and the end of the swivel portion on the intake downstream side is located on the intake downstream side of the inflow port, and therefore includes dust flowing into the centrifugal separation unit from the inflow port. Since the suction air is reliably swirled along the swivel portion, it is possible to obtain a dust collecting performance that is less likely to be clogged and whose suction force is not easily reduced. In addition, the dust swirled along the outer periphery of the swivel portion has a tangent to the end of the swivel portion on the downstream side of the intake air located within the range of the opening portion. It is accumulated in the fine dust accumulation part. The centrifugal separation unit has an inlet through which the sucked dust flows in, and is disposed in the dust separation unit that separates and collects the suction air, and has a second inlet covered with a filter of the dust separation unit. Centrifuges the suction air containing dust after passing through. The sucked dust can be separated in two stages: passing through the second inlet covered with a filter, and subsequent centrifugation. It is possible to obtain a dust collection performance that is difficult to reduce and the suction force does not decrease rapidly. Further, the suction air containing dust sucked into the dust separator from the first inlet turns along a substantially arc-shaped second inlet filter provided on the substantially cylindrical wall surface of the centrifugal separator. Therefore, dust collection performance can be improved by cleaning the filter.
[0008]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0009]
FIG. 1 is a front view of the vacuum cleaner. The vacuum cleaner includes a suction tool 1 for sucking dust on the floor, a vacuum cleaner body 18 having an electric blower 3 for generating suction air, an extension pipe 2 having one end connected to the suction tool 1, and the vacuum cleaner body. A dust collecting section 4 that can be attached and detached from 18 and collects dust, a suction passage that communicates the dust collecting section 4 and the suction tool 1 is formed through the extension pipe 2, and the extension pipe 2 and the dust collection section 4 are formed. The hose 5 is connected to each other. Further, the cleaner body 18 is provided with a discharge hole (not shown) for discharging the exhaust generated by the electric blower 3.
[0010]
2-4 is a block diagram of the dust separation part 6, the centrifuge part 7, and the dust collection cover 8 which comprise the dust collection part 4 of a vacuum cleaner. The dust separator 6 is covered with a freely openable open / close lid 17 at the lower opening. In addition, the dust separation unit 6 is provided with a first inlet 9 through which airflow including dust flows from the suction tool 1 through the hose 5. The centrifugal separator 7 is formed with a smaller diameter than the dust separator 6, has a substantially circular space inside, and is disposed in the dust separator 6. The dust collecting lid 8 has a substantially cylindrical shape having a soft material such as an elastomer on the outer periphery, and is disposed on the intake downstream side of the centrifugal separator 7. Reference numeral 12 denotes a first communication port that connects the suction port (not shown) of the electric blower chamber 3 and the inside of the centrifugal separator 7 with a filter. Reference numeral 10 denotes a substantially arc-shaped second inflow port through which an airflow containing dust flows inward of the centrifugal separator 7, which is covered with a filter, and is provided at a position not facing the first inflow port 9. . The substantially arc-shaped second inlet is detachable, and the filter can be cleaned.
[0011]
14 is a substantially cylindrical wall surface provided in the centrifugal separator 7, and 11 is provided inward of the substantially cylindrical wall 14 provided in the centrifugal separator, and includes dust flowing in from the second inlet 10. It is a substantially arcuate swivel portion arranged to form a swirl passage 11a for swirling the air flow along the inner wall of the wall surface portion 14 of the centrifugal separator 7. Only the inside of the substantially arcuate swivel portion 11 is configured to communicate with the first communication port 12. Reference numeral 15a denotes a first opening provided on the bottom surface of the centrifugal separation unit 7 on the intake downstream side of the swirl passage 11a and outside the swirl unit. Reference numeral 16 denotes a guide portion that extends from the swivel portion 11 and is formed so as to be in contact with the inner wall of the wall surface portion 14 of the centrifugal separation portion 7. It is said.
[0012]
FIG. 5 is a view taken in the direction of arrow A in FIG. Reference numeral 20 denotes a fine dust accumulating portion that communicates with the first opening 15 and is integrally formed below. Reference numeral 13 denotes a high-density dust storage unit which is arranged in the dust separation unit 6 and stores the high-density dust dust separated from the suction air in the dust separation unit 6, and 24 is the same in the dust separation unit 6. Is a low-density dust accumulating unit that accumulates low-density dust separated from the suction air in the dust separating unit 6, and is partitioned by a partition wall 22. The high-density dust accumulation unit 13 is arranged farther from the first inflow port 9 than the low-density dust accumulation unit 24. The low density dust accumulating unit 24 has a second opening 21, and the second opening 21 is covered with a filter 23. Reference numeral 19 denotes a second communication port that allows the suction port (not shown) of the electric blower 3 to communicate with the low-density dust accumulation unit 24 through the second opening 21. That is, the second opening portion 21 serves as a communication portion that communicates the suction port (not shown) of the electric blower 3 and the low-density dust accumulating portion 24.
[0013]
6 and 7 are top views of the dust collection unit 4. The end portion of the opening portion 15 is provided so as to protrude inward of the centrifugal separation portion 7, and the end portion 11 b on the intake air downstream side of the swivel portion 11 is formed so as to be located near the opening portion 15. In addition, 26 shown in FIG. 7 is provided by extending a substantially arc-shaped wall continuous to the substantially circular space of the centrifugal separator 7 to the vicinity of the opening 15.
[0014]
The operation and action of the above configuration will be described. The dust sucked from the suction tool 1 passes through the hose 5 and is then sucked into the dust separator 6 from the first inlet 9. Suction air containing dust sucked into the dust separator 6 from the first inlet 9 swirls along the substantially cylindrical wall surface 14 provided in the centrifugal separator 7. In FIG. 4, the end portion 11 b on the intake downstream side of the swivel unit 11 is located on the intake downstream side with respect to the second inflow port 10, and therefore includes dust flowing into the centrifugal separator 7 from the second inflow port 10. Since the suction air is reliably swirled along the swivel unit 11, the dust is centrifuged from the suction air and then travels toward the opening 15 and is accumulated in the fine dust accumulation unit 20. Further, since the tangent line of the end portion 11b on the intake air downstream side of the swivel portion 11 is located within the range of the opening portion 15, the dust reliably centrifuged from the suction air is directed to the opening portion 15, It is accumulated in the fine dust accumulation unit 20.
[0015]
Further, as shown in FIGS. 6 and 7, the end portion of the opening portion 15 is provided so as to protrude to the inside of the centrifugal separation portion 7, and the end portion 11 b on the intake air downstream side of the swivel portion 11 is provided near the opening portion 15 Since the dust swirled along the outer periphery of the swivel unit 11 is located at the end 11b on the intake downstream side of the swivel unit 11 up to the vicinity of the opening 15, It surely goes to the opening 15 and is accumulated in the fine dust accumulation part 20.
[0016]
Further, as shown in FIG. 3, in the dust separation unit 6, a suction force is applied to the low density dust accumulation unit 24, so that a large volume of dust is easily subjected to the suction force and a heavy dust However, since the centrifugal force is large, the high-density dust has a large centrifugal force, and the low-density dust has a small centrifugal force. Thereby, the high-density dust is accumulated in the high-density dust accumulation unit 13 disposed farther from the low-density dust accumulation unit 24 with respect to the first inlet 9 after passing through the open end of the partition wall 22, The low density dust is accumulated in the low density dust accumulation unit 24 in the vicinity of the first inlet 9.
[0017]
In addition, since the second opening 21 that communicates the inside of the low density dust accumulation unit 24 and the suction port (not shown) of the electric blower 3 is provided, the low density dust accumulated in the low density dust accumulation unit 24 is provided. Is accumulated from the second opening side by the suction force. In particular, the low-density dust has a small weight and a large volume, such as cotton and tissue, and has a large amount of dust, such as cotton and tissue. In addition, the filter 23 covering the second opening 21 is provided with a lower end (low density). Since the filter 23 is provided at a predetermined height from the lower end of the dust accumulating portion 24, the filter 23 can be prevented from being clogged, so that the dust collecting performance can be improved.
[0018]
Further, the high-density dust having a small volume that easily causes the filter 23 to be clogged is surrounded by the partition wall 22 disposed in the dust separator 6 and the partition wall 25 disposed in the open / close lid 17, and attracts the suction force. Since it is accumulated in the high-density dust accumulating unit 13 where no action occurs and does not adhere to the filter 23, the filter 23 can be prevented from being clogged, so that the dust collecting performance can be improved.
[0019]
Furthermore, the suction action in the low density dust accumulating unit 24 can prevent the low density dust accumulated in the low density dust accumulating unit 24 from rising, so that the filter of the second inlet 10 of the centrifugal separator 7 can be used. It is possible to prevent adhesion of dust and improve dust collection performance. Suction air containing dust sucked into the dust separator 6 from the first inlet 9 follows the filter of the second inlet 10 having a substantially arc shape provided on the substantially cylindrical wall surface 14 of the centrifugal separator 7. Therefore, dust collection performance can be improved by cleaning the filter.
[0020]
Dust having a large mass and volume is collected in the dust separator 6, but fine dust having a small mass and volume is sucked into the centrifuge 7 through the second inlet 10. The airflow including dust sucked inward of the centrifugal separator 7 swirls in a swirl passage 11 a formed by the inner wall of the wall surface 14 of the centrifugal separator 7 and the substantially arcuate swirl 11. The airflow and dust are separated, and the airflow separated from the dust thereafter flows into the inside of the swiveling portion 11 from the opening portion on the intake downstream side of the swirling passage 11a, and the inside of the swirling portion 11 having a substantially arc shape. Since only one side is configured to communicate with a first communication port 12 that communicates with a suction port (not shown) of the electric blower 3, the airflow is outside the cleaner main body 18 via the first communication port 12. Is discharged.
[0021]
On the other hand, the dust separated from the airflow is accumulated in the fine dust accumulation unit 20 through the first opening 15. Since the fine dust accumulating unit 20 is covered and closed by the open / close lid 17, air current is not generated in the fine dust accumulating unit 20 and is reliably accumulated inside. Therefore, it is possible to prevent the dust that has been centrifuged by the centrifuge 7 and accumulated in the fine dust accumulator 20 from flowing back to the centrifuge 7 again. In addition, since the high-density dust accumulation unit 13, the low-density dust accumulation unit 24, and the fine dust accumulation unit 20, which are respectively open downward, are arranged in the dust separation unit 6 in the horizontal direction, the opening / closing lid 17. Open, the dust accumulated in each of the high density dust accumulation unit 13, the low density dust accumulation unit 24, and the fine dust accumulation unit 20 falls at the same time. Therefore, together with the dust collected in the dust separation unit 6 Can be discarded at once.
[0022]
【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 an overall view of a vacuum cleaner according to a first embodiment of the present invention. FIG. 2 is a schematic configuration diagram of the dust collecting portion. FIG. 3 is a development view of the dust collecting portion. FIG. 5 is a top view of the other centrifugal separation unit. FIG. 7 is a top view of the other centrifugal separation unit. FIG. 8 is a view of a conventional vacuum cleaner. Side sectional view [Explanation of symbols]
6 Dust separator 7 Centrifuge 9 Inlet (dust separator)
10 Inlet (centrifugal separator)
DESCRIPTION OF SYMBOLS 11 Turning part 13 High-density dust storage part 14 Low-density dust storage part 15 Opening part

Claims (1)

A dust separation unit that sucks suction air containing dust from the first inlet and separates and collects dust from the suction air through a substantially arc-shaped second inlet covered with a filter; and the dust separation A centrifuge for centrifuging dust from suction air containing dust after passing through the second inflow port, a substantially cylindrical wall surface provided in the centrifuge , and the wall surface provided inwardly of the section, it arranged to form a swirl passage for turning the suction air containing dust flows from the second inlet along the inner wall of the wall portion of the centrifugation unit substantially circular An arc-shaped swivel unit , a fine dust accumulation unit that accumulates dust separated by the centrifugal separation unit, and an opening that is provided outside the swivel unit and on the bottom surface of the centrifugal separation unit and communicates with the fine dust accumulation unit. , Disposed on the top surface on the downstream side of the intake of the centrifugal separator, The internal parts and a dust collecting cover having a communication port communicating with the electric blower, the second inlet is provided on the wall surface of the substantially cylindrical shape provided on the centrifugal separation unit, the intake of the swivel part The downstream end is located on the intake downstream side of the second inlet , and the tangent to the intake downstream end of the swivel portion is located within the range of the opening. The suction air containing the dust that has flowed in is reliably swirled to centrifuge the dust and clean the filter that covers the second inlet, and the centrifuge dust is surely directed to the opening to the fine dust accumulation part. A vacuum cleaner that directs the suction air that has accumulated and removed dust from the communication port to the electric blower .

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