JP2009279339A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of cleaning exhaust air regardless of the fineness of dust. <P>SOLUTION: The vacuum cleaner is provided with a dust collecting part 7 communicating with the suction side of an electric blower 5 housed in a cleaner body 1, a charging part 31 for charging the dust which has passed through the electric blower 5, and a dust catching part 32 for catching the dust charged by the charging part 31 using the charges of a polarity opposite to the charging of the dust. The dust included in the exhaust air is caught in the dust catching part 32 regardless of the fineness, and the exhaust air is cleaned. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner provided with a dust collecting portion communicating with an intake side of an electric blower.

Conventionally, this type of vacuum cleaner includes a vacuum cleaner body that houses an electric blower. The vacuum cleaner main body is provided with a dust collecting portion that communicates with the suction side of the electric blower. And floor brushes communicate. Further, a filter for collecting dust contained in the exhaust from the electric blower is provided in the cleaner body on the exhaust side of the electric blower (see, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2007-296305 (page 5-7, FIG. 2-3)

  However, in the above vacuum cleaner, even if the filter is a high-performance filter such as a HEPA filter, dust finer than the filter filter's eyes passes through the filter, resulting in exhaust air. Has a problem that it cannot be reliably purified.

  In addition, such a filter has a problem that the filter is clogged with time and the performance is deteriorated.

  This invention is made | formed in view of such a point, and it aims at providing the vacuum cleaner which can purify | clean exhaust air irrespective of the fineness of dust.

  The present invention relates to a dust collecting portion that communicates with the intake side of an electric blower, a charging means that charges the dust that has passed through the electric blower, and dust that has been charged by the charging means. And a dust collecting means for collecting by using.

  According to the present invention, the exhaust air can be purified regardless of the fineness of the dust by collecting the dust charged by the charging means by the dust collecting means using the charge having the opposite polarity to the charge of the dust. .

  Hereinafter, the structure of the vacuum cleaner of the 1st Embodiment of this invention is demonstrated with reference to FIG. 1 and FIG.

  1 and 2, reference numeral 1 denotes a vacuum cleaner main body, and the vacuum cleaner main body 1 is a so-called canister-type electric vacuum cleaner that can run on a floor surface. The vacuum cleaner main body 1 includes a main body case 4 having a lower case 2 whose upper side is opened to be inclined downward from the rear to the front, and a lid 3 that covers an upper portion of the lower case 2. In the case 4, an electric blower chamber 6 that houses the electric blower 5 is located on the rear side, and a dust collection chamber 7 that is opened and closed by a lid 3 and that collects dust D1 is detachably disposed. 8 are divided by the partition P in the front side, respectively.

  A main body suction port 11 that can communicate with the suction side of the electric blower 5 is formed in the front end portion of the main body case 4 via the dust collecting portion 7. A hose body 12 is attached to and detached from the main body suction port 11. A hand operating part 13 is provided at the tip of the hose body 12, and a gripping part 14 is provided on the hand operating part 13 to be gripped by an operator. A plurality of setting buttons 15 for setting an operation mode and the like of the electric blower 5 are provided by an operator. The extension pipe 16 and a floor brush 17 as a suction port body are sequentially connected to the distal end portion of the hand operation unit 13 in communication.

  Further, a cord reel around which a power cord (not shown) for supplying power to the electric blower 5 is wound is disposed in the main body case 4 so that the power cord can be taken in and out of the main body case 4.

  The electric blower 5 is disposed along a substantially central position in the left-right direction of the cleaner body 1, that is, along the central axis of the main body suction port 11 with the suction side as the front side and the exhaust side as the rear side. Further, the electric blower 5 is operated according to the operation mode set by the setting button 15.

  The electric blower chamber 6 includes a storage chamber 21 that stores the electric blower 5 and a dust separation chamber 22 that communicates with the downstream side of the storage chamber 21. The dust separation chamber 22 communicates with the outside of the cleaner body 1 through an exhaust port 23 provided in the rear part of the body case 4.

  The storage chamber 21 communicates with the dust collection chamber 8 through a communication hole 24 formed in the partition wall P. Further, a rear partition wall 25 as a partitioning portion is formed between the rear portion of the storage chamber 21 and the dust separation chamber 22. On one side of the rear partition wall 25, a communication port 26 that communicates between the storage chamber 21 and the dust separation chamber 22 is formed as an opening.

  The dust separation chamber 22 includes a charging unit 31 as a charging unit communicating with the communication port 26 and a dust collecting unit 32 as a dust collecting unit communicating with the charging unit 31.

  The charging unit 31 includes a charging air passage 35 that is long in the left-right direction of the cleaner body 1 along the rear portion of the rear partition wall 25, and a charging unit main body 36 that serves as a charging means main body disposed in the charging air passage 35. And have.

  The charged air passage 35 is an air passage portion through which the exhaust air of the electric blower 5 introduced from the communication port 26 passes. Note that a plurality of the charged air passages 35 can be meandered in the left-right direction of the vacuum cleaner main body 1, for example, to increase the total length of the air passages.

  The charging unit main body 36 includes a charging electrode (not shown) arranged along the charging air path 35, and charges the dust D2 contained in the exhaust air passing through the charging air path 35 to a predetermined polarity, for example, plus. It is configured as follows.

  On the other hand, the dust collecting part 32 is a collecting air passage 41 communicating between the downstream side of the charged air passage 35 and the exhaust port 23, and a dust collecting means main body arranged in the collecting air passage 41. And a dust collector main body 42.

  The collection air passage 41 is formed, for example, in a meandering manner by allowing a plurality of air passage portions 41 a to 41 f to communicate in the longitudinal direction alternately in the left-right direction of the cleaner body 1.

  The dust collecting unit main body 42 includes a collecting electrode (not shown) that can be charged to a polarity opposite to that of the dust D2 charged by the charging unit main body 36 of the charging unit 31, in this case, a negative polarity. It is configured to adsorb and collect all the positively charged dust D2 contained in the exhaust air passing through the inside, and is arranged over the entire air passage portions 41a to 41f of the collection air passage 41. Yes.

  And the dust collection part 7 can be set as arbitrary structures, such as a disposable paper pack which is a filtration filter, a centrifugal separator, or a rectilinear (inertia) separator.

  Next, the operation of the first embodiment will be described.

  First, the hose body 12, the extension pipe 16 and the floor brush 17 are sequentially connected to the main body suction port 11, the lid body 3 of the main body case 4 is opened, the dust collecting part 7 is attached, and the lid body 3 is closed.

  Then, the power cord is pulled out from the main body case 4 and connected to an outlet such as a wall surface, and the operator grips the grip 14 and operates a predetermined setting button 15 to drive the electric blower 5.

  As a result, due to the negative pressure formed by driving the electric blower 5, dust is sucked together with air from the front end side of the floor brush 17 that the operator has run on the floor surface, and the sucked dust and the floor brush 17 together with the air. Then, it is sucked into the dust collecting part 7 through the extension pipe 16, the hose body 12 and the main body suction port 11.

  In the dust collecting unit 7, filtration separation by a paper pack, centrifugation by a centrifugal separator, or rectilinear (inertia) separation by a rectilinear (inertia) separator is performed, and dust D1 contained in the air is collected.

  The air that has passed through the dust collecting portion 7 is sucked into the electric blower 5 through the communication hole 24 of the partition wall P together with the slightly remaining fine dust D2, and becomes exhausted air. To the charged air passage 35.

  In the charged air passage 35, the dust D2 contained in the exhaust air is positively charged by the charging electrode as the exhaust air passes.

  Next, exhaust air that has flowed into the collection air passage 41 from the charged air passage 35 is all negatively charged by the collection electrode of the dust collection portion main body 42 that is negatively charged while passing through the air passage portions 41a to 41f. Dust D2 is adsorbed. Therefore, in the exhaust air passing through the collection air passage 41, the dust D2 gradually decreases from the air passage portion 41a to the air passage portion 41f.

  The exhaust air from which all the fine dust D2 has been collected is exhausted from the exhaust port 23 to the outside of the cleaner body 1.

  As described above, in the first embodiment, dust D2 positively charged by the charging unit 31 is captured by the dust collecting unit 32 using a negative charge having a polarity opposite to that of the charge of the dust D2. The composition was to collect.

  For this reason, in the conventional case where dust contained in the exhaust air is collected by the filter, dust finer than the size of the filter filter passes through the filter and exhausts to the outside of the cleaner body 1 together with the exhaust air. On the other hand, according to the first embodiment, the exhaust air exhausted from the cleaner body 1 to the outside can be purified regardless of the fineness of the dust.

  As a result, it is possible to prevent air contamination at the cleaning place.

  Further, since the collecting air passage 41 of the dust collecting portion 32 communicates with the plurality of air passage portions 41a to 41f in a meandering manner, the vacuum cleaner main body 1 is not enlarged more than necessary. Since a relatively long air passage total length can be obtained inside the main body 1, the dust D2 collection accuracy can be improved, and the capacity of collecting the dust D2 in the dust collection part 32 can be increased. The collection performance can be maintained over a long period of time.

  Next, a second embodiment will be described with reference to FIG. 3 and FIG. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The second embodiment is provided with a communication air passage 45 that communicates the electric blower chamber 6 with the upstream side of the dust collection chamber 8 (dust collection section 7) in the first embodiment. .

  One end side of the communication air passage 45 communicates with the side portion of the storage chamber 21, and the other end side communicates with a position on the downstream side of the main body suction port 11. Further, a first opening / closing valve 47 as a communication air passage opening / closing valve is attached to one end side of the communication air passage 45, and a second opening / closing valve 48 as a dust collecting portion side opening / closing valve is attached to the other end side. It has been.

  Here, a middle partition wall 51 as a partition wall is formed in the storage chamber 21 in front of the rear partition wall 25, and a cleaning exhaust air passage 52 is provided between the middle partition wall 51 and the rear partition wall 25 as a vacuum cleaner. The main body 1 is formed in a longitudinal shape along the left-right direction. A vent 53 is formed on one side of the middle partition 51 at a position facing the communication port 26 of the rear partition 25.

  The first on-off valve 47 is pivotally supported, for example, at an edge on one end side of the communication air passage 45, and the first on-off valve 47 is rotated between the communication air passage 45 and the electric blower chamber 6. A state in which communication is blocked (hereinafter referred to as a first blocked state), a state in which the communication air passage 45 is opened to communicate with the communication port 26 and communication between the vent 53 and the communication port 26 is blocked (hereinafter referred to as first communication). Can be selected).

  That is, in the first blocking state, the vent 53 and the communication port 26 are communicated with each other, and the communication air passage 45 is blocked from the storage chamber 21 and the dust separation chamber 22.

  Further, in the first communication state, the communication port 26 and the communication air passage 45 communicate with each other, and the communication port 26 is blocked from the vent 53 and the storage chamber 21.

  The second on-off valve 48 is pivotally supported, for example, at an edge portion on the other end side of the communication air passage 45 so that the second on-off valve 48 is rotated and connected to the communication air passage 45 and the dust collecting chamber 8. A state in which the communication of the main body is blocked (hereinafter referred to as a second blocked state), a state in which the communication air passage 45 is opened to communicate with the dust collection chamber 8 and the main body inlet 11 is blocked from the dust collection chamber 8 (hereinafter referred to as The second communication state) can be selected.

  That is, in the second blocking state, the main body suction port 11 and the dust collection chamber 8 communicate with each other, and the communication air passage 45 is blocked with respect to the dust collection chamber 8, that is, the suction side of the electric blower 5.

  In the second communication state, the dust collection chamber 8 (the suction side of the electric blower 5) communicates with the communication air passage 45, and the main body suction port 11 is blocked from the dust collection chamber 8.

  The other side of the cleaning exhaust air passage 52 opposite to the vent 53 communicates with an exhaust hole 56 formed in the side of the main body case 4. A cleaning filter 57 as a filter is detachably attached to the exhaust hole 56 so as to cover the exhaust hole 56, and a third on-off valve 58 as an exhaust on-off valve that opens and closes the exhaust hole 56 rotates. The third opening / closing valve 58 is pivotally supported so that opening / closing of the exhaust hole 56 can be selected by turning.

  That is, the third on-off valve 58 has a state in which the cleaning exhaust air passage 52 is shut off from the outside of the cleaner body 1 (hereinafter referred to as a third shut-off state), and a cleaning exhaust air passage 52 is connected to the cleaner body 1. It is possible to select a state communicating with the outside (hereinafter referred to as a third communication state).

  The on-off valves 47, 48, 58 are configured to rotate in conjunction with each other.

  The cleaning filter 57 can remove dust collected by removing it from the exhaust hole 56 and cleaning it, for example.

  In the normal cleaning state, as shown in FIG. 3, the on-off valves 47, 48, and 58 are in a shut-off state, respectively, and the operator is allowed to move on the floor surface by the negative pressure formed by driving the electric blower 5. Dust sucked together with air from the front end side of the floor brush 17 that has traveled is sucked into the dust collecting section 7 through the floor brush 17, the extension pipe 16, the hose body 12, and the main body suction port 11. Thus, filtration separation by a paper pack, centrifugation by a centrifugal separator, or rectilinear (inertia) separation by a rectilinear (inertia) separator is performed, and dust D1 contained in the air is collected. Thereafter, the air that has passed through the dust collecting section 7 is sucked into the electric blower 5 through the communication hole 24 of the partition wall P together with the slightly remaining fine dust D2, and becomes exhaust air. It flows into the charging air passage 35 through the mouth 26, and the dust D2 is positively charged by the charging electrode in the charging air passage 35. Further, the exhaust air flowing into the collection air passage 41 from the charged air passage 35 is all negatively charged by the collection electrode of the dust collection body main body 42 charged negatively while passing through the air passage portions 41a to 41f. The exhaust air from which all the fine dust D2 has been collected is exhausted from the exhaust port 23 to the outside of the cleaner body 1.

  On the other hand, if the above cleaning state is continued, a large amount of dust D2 adheres to the surface of the collection electrode of the dust collection unit 32, and the collection performance of the dust collection unit 32 decreases. Clean it. At this time, as shown in FIG. 4, the on-off valves 47, 48, and 58 are in communication with each other in a state where the dust collection unit 32 and the charging unit 31 are stopped, and are formed by driving the electric blower 5. Due to the negative pressure, the outside air of the vacuum cleaner body 1 is sucked into the collecting air passage 41 from the exhaust port 23, and the dust D2 adhering to the collecting electrode flows inside the collecting air passage 41 together with the sucked air. Backflow. Thereafter, the air that has passed through the charged air passage 35 is sucked into the communication air passage 45 and is returned to the upstream side of the dust collecting chamber 8 through the communication air passage 45. Part of the dust D2 contained in the air is collected by being entangled with the dust D1 and the like collected in the dust collection unit 7 in the dust collection unit 7. Further, the dust D2 contained in the air that has passed through the dust collecting section 7 is sucked into the electric blower 5 through the communication hole 24 of the partition wall P, and after passing through the electric blower 5 to become exhaust air, 53 flows into the cleaning exhaust air passage 52, passes through the cleaning exhaust air passage 52, is collected by the cleaning filter 57, and the air in which the dust D2 is collected is removed through the exhaust hole 56. The air is exhausted to the outside of the main body 1.

  The dust D2 collected by the cleaning filter 57 can be removed by removing the cleaning filter 57 from the vent 53 and cleaning it.

  The cleaning state can be set to be performed at an arbitrary timing, for example, at the start of cleaning (at start-up), at the end of cleaning, or when the cumulative cleaning time becomes a predetermined time or longer.

  As described above, in the second embodiment, in the cleaning state, the dust D2 charged positively by the charging unit 31 is converted into a dust collecting unit using a negative charge having a polarity opposite to the charge of the dust D2. By having the same configuration as that of the first embodiment, such as collecting by 32, the same effects as those of the first embodiment can be obtained.

  Further, by providing a communication air passage 45 that allows the suction air of the electric blower 5 to communicate from the dust collector 32 to the dust collector 7 with the driving of the dust collector 32 stopped, the dust collector 32 is provided. When the dust collection performance is reduced, the dust D2 collected by the dust collection unit 32 is obtained by causing the suction air of the electric blower 5 to flow backward through the dust collection unit 32 and the charging unit 31 as in the above cleaning state. Together with the suction air, it is carried to the dust collecting part 7 through the communication air passage 45, and at least a part of the dust can be collected in the dust collecting part 7, and the dust D2 that has passed through the dust collecting part 7 Since the dust is collected by the cleaning filter 57 of 52, the collecting electrode of the dust collecting unit 32 can be returned to a state where the dust D2 is not attached, and the collecting performance can be restored.

  As a result, the collection performance of the dust collection unit 32 can be maintained for a longer period, and the dust collection unit 32 does not need to be maintained, so that the usability is improved.

  In the second embodiment, the pressure loss of the hose body 12, the extension pipe 16, and the floor brush 17 connected to the main body suction port 11 is sufficiently large compared to the dust collection chamber 7 side. Since the air that has passed through the communication air passage 45 in the state hardly flows back to the main body suction port 11 side, the same function and effect can be achieved without providing the second on-off valve 48.

  In each of the above embodiments, the shape of the charging air passage 35 and the collection air passage 41 can be arbitrarily set, for example, the shape along the longitudinal direction of the cleaner body 1. Increasing the total length of the road can improve the collection performance of the dust D2.

  Furthermore, the vacuum cleaner is not limited to the canister type, but can be applied to, for example, an upright type, a handy type, or an autonomous traveling type.

It is explanatory drawing which shows the vacuum cleaner of the 1st Embodiment of this invention. It is a perspective view which shows a vacuum cleaner same as the above. It is explanatory drawing which shows the cleaning state of the vacuum cleaner of the 2nd Embodiment of this invention. It is explanatory drawing which shows the cleaning state of the dust collection means of a vacuum cleaner same as the above.

Explanation of symbols

1 Vacuum Cleaner Body 5 Electric Blower 7 Dust Collector
31 Charging part as a charging means
32 Dust collector as a dust collector
45 Ventilation passage

Claims (2)

A vacuum cleaner body containing an electric blower,
A dust collector communicating with the intake side of the electric blower;
Charging means for charging the dust passing through the electric blower;
An electric vacuum cleaner comprising: a dust collecting means for collecting dust charged by the charging means by using a charge having a polarity opposite to the charge of the dust. The vacuum cleaner according to claim 1, further comprising a communication air passage that allows the suction air of the electric blower to communicate from the dust collecting means to the dust collecting portion in a state where the driving of the dust collecting means is stopped. .

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