JP3920200B2 - Electric vacuum cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric vacuum cleaner, and more particularly to an electric vacuum cleaner having a dust collecting part for collecting dust in a suction path and a dust collecting filter for collecting dust in an exhaust path.
[0002]
[Prior art]
A conventional vacuum cleaner is described in, for example, Japanese Patent Laid-Open No. 6-261851. In the conventional electric vacuum cleaner, the dust sucked from the suction port is conveyed through a suction path to a cleaner main body having an electric blower. The suction path that communicates with the electric blower from the suction port has a dust collection part that collects dust, and the exhaust path from the electric blower to the outside of the cleaner body has a dust collection filter that collects dust.
[0003]
Garbage sucked from the suction port is collected by the dust collecting part of the cleaner body. However, for example, fine dust having a diameter smaller than the eyes of a filter such as a paper bag used in the dust collecting portion passes through the electric blower without being completely collected. As the dust collecting filter provided in the exhaust path, a filter made of a nonwoven fabric or the like is used. The carbon dust of the motor and fine dust leaking from the dust collecting portion are collected by the dust collecting filter.
[0004]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 6-261851
[Problems to be solved by the invention]
However, the fine dust is not completely collected even in the dust collection filter and is discharged from the cleaner body into the room. Therefore, in conventional vacuum cleaners, in order to enhance the dust collection effect of the dust collection part and the dust collection filter, there are improvement measures such as making paper bags and filters finer, and providing dust collectors and filters in multiple stages. It has been subjected.
[0006]
However, these increase the pressure loss of the air passage, increase the size of the vacuum cleaner, clogging due to dust collection of the filter, and reduce the original function of the vacuum cleaner.
[0007]
The present invention has been made in view of such circumstances, and has improved dust collection effect without reducing the size of paper bags and filters, or providing multiple dust collectors and filters. An object of the present invention is to provide a vacuum cleaner capable of enhancing the dust collection effect without deteriorating the function of the vacuum cleaner body.
[0008]
[Means for Solving the Problems]
The vacuum cleaner according to the present invention includes a vacuum cleaner body having an electric blower, a suction port for sucking in dust, a suction path communicating from the suction port to the electric blower, and an exhaust path from the electric blower to the outside of the vacuum cleaner body. Prepare. The suction path has a dust collection part that collects dust, and the exhaust path has a dust collection filter that collects dust. The electric vacuum cleaner further comprises a a in the suction passage of at least one of the exhaust path, and a static electricity generator for charging the waste, and an external electrode to the outside of the dust collection unit. Here, the dust collecting part is a cyclone dust collecting part, and has an electrode part therein, and when the cyclone dust collecting part is attached to the cleaner body, the electrode part and the external electrode are electrically connected. The voltage supplied to the external electrode by the voltage supplied from the external electrode is maintained at a potential opposite to the polarity of the dust charged in the static electricity generating unit, and the cyclone dust collecting unit is removed from the vacuum cleaner body. Sometimes, the electrode part and the external electrode are electrically separated, and the potential of the electrode part is dissipated. In addition, it is preferable that a static electricity generation part is made into a channel | path shape.
[0009]
By providing the static electricity generating part as described above, the dust can be charged, and the dust can be captured using the electrostatic adsorption force.
[0010]
It is preferable that the static electricity generating part is entirely or partially made of nylon or fluororesin. Thereby, the charging polarity of the dust can be unified.
[0011]
The dust collection filter preferably includes a filter electretized to a polarity opposite to the polarity of the dust charged in the static electricity generation unit. Thereby, the dust can be adsorbed to the dust collecting filter by utilizing the electrostatic adsorption force.
[0015]
Further, when the cyclone dust collecting part is attached to the cleaner body, the electrode part is electrically connected to the external electrode, and when the dust collecting part is detached from the cleaner body, more and this is the electrode and electrically isolated during the dust collection unit removal, there is no problem of electric shock, and since the electrode portion is external electrodes electrically separated, since the electrostatic attraction force decreases You can easily dispose of garbage.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment of the vacuum cleaner based on this invention is described below.
[0017]
The vacuum cleaner in the present embodiment includes a vacuum cleaner body having an electric blower, a suction port for sucking dust, a suction path communicating from the suction port to the electric blower, and an exhaust path from the electric blower to the outside of the vacuum cleaner body. Is provided. The suction path has a dust collection part that collects dust, and the exhaust path has a dust collection filter that collects dust. In addition, at least one of the suction path and the exhaust path is provided with a static electricity generation unit that charges dust collected. By providing the static electricity generation part in this way, dust can be charged and the dust collection effect can be improved.
[0018]
Next, each embodiment of the present invention will be described in more detail with reference to the drawings.
[0019]
1 is an overall view of an electric vacuum cleaner according to Embodiment 1. FIG. As shown in FIG. 1, the vacuum cleaner according to the first embodiment includes a vacuum cleaner main body 1, a suction hose 2, a connecting pipe 3, a suction port 4, a paper bag 5 as a dust collecting unit, a dust collecting filter 6, and static electricity generation. A static electricity generating passage 7 as a unit is provided, and a not-shown cord reel, an electric blower, and a control circuit for controlling energization of the electric blower are disposed in the cleaner body 1.
[0020]
FIG. 2 is an overall view of a cyclone type electric vacuum cleaner according to Embodiment 2 of the present invention. As shown in FIG. 2, the cyclone type vacuum cleaner according to the second embodiment includes a vacuum cleaner body 1, a suction hose 2, a connection pipe 3, a suction port 4, a dust collection filter 6, a static electricity generation passage 7, and a cyclone dust collection. Part 8 is provided. Inside the vacuum cleaner main body 1, a cord reel (not shown), an electric blower, and a control circuit for controlling energization of the electric blower are arranged.
[0021]
The installation position of the cyclone dust collecting unit 8 is not limited to the position shown in FIG. 2 and is disposed anywhere in the suction path from the suction port 4 to the electric blower.
[0022]
Further, in both the examples of FIGS. 1 and 2, it is conceivable to provide a static electricity generation passage in an exhaust passage (not shown). However, the static electricity generation path is not necessarily required between the electric blower in the exhaust path and the dust collecting filter, and may be omitted in some cases. The static electricity generation passage in the exhaust path has the same configuration as the static electricity generation passage in the suction path.
[0023]
Here, it is preferable that the static electricity generation passage 7 is entirely or partially made of nylon or fluororesin.
[0024]
FIG. 3 is a schematic configuration diagram of the static electricity generation passage 7 of the vacuum cleaner in the present embodiment. Here, first, the principle of static electricity generation by the static electricity generation passage 7 will be described below.
[0025]
The dust 9 collected from the suction port 4 is guided to the connecting pipe 3 and passes through, for example, a static electricity generation passage 7 provided at the tip of the connecting pipe 3. The static electricity generation passage 7 has a resin pipe shape, and generates static electricity by friction between the waste 9 and the inner wall of the static electricity generation passage 7 when the waste 9 passes through.
[0026]
When the static electricity generation passage 7 is made of nylon, most of the dust 9 that has passed is negatively charged due to the charge train, and the static electricity generation passage and the connecting pipe are positively charged.
[0027]
On the other hand, when the static electricity generation passage 7 is made of a fluororesin (for example, polytetrafluoroethylene), most of the dust 9 that has passed is positively charged due to the charge train, and the static electricity generation passage and the connecting pipe are negative. Is charged.
[0028]
As described above, by using nylon or fluororesin, the polarity of the dust that has passed through the static electricity generation passage 7 can be unified. FIG. 3 shows a state in which a fluororesin is used for the static electricity generation passage 7.
[0029]
In the following description, the case where the static electricity generation passage 7 is made of a fluororesin in the vacuum cleaner shown in FIG. 1 will be described. As described above, the positively charged dust 9 passes through the connecting pipe 3 and the suction hose 2 and is guided to the dust collecting portion constituted by the paper bag 5 inside the cleaner body 1.
[0030]
Here, it is preferable that the dust collecting portion is formed of a paper bag electretized to a polarity opposite to the polarity of the dust charged in the static electricity generation passage 7.
[0031]
FIG. 4 is a partial cross-sectional view of the paper bag 5. In FIG. 4, the paper bag 5 has been electret-processed and is negatively charged. When the positively charged dust 9 passes through the paper bag 5, electrostatic dust collection is performed by electrostatic attraction between the negatively charged paper bag 5 in addition to filtration and dust collection. Enhanced. At this time, since the fluororesin is used for the static electricity generation passage 7, the dust 9 that has passed through is unified to a plus having a polarity opposite to that of the paper bag 5, and an electrostatic adsorption force acts on most of the dust. .
[0032]
By the way, as in the prior art, if the filter is made finer in order to improve the dust collection efficiency, there is a problem that the pressure loss of the air passage increases and the suction power of the cleaner is reduced. On the other hand, in the present embodiment, by adding a dust collecting effect due to static electricity, the dust collection efficiency is improved without making the filter in the paper bag 5 finer, so the suction force of the vacuum cleaner does not decrease. .
[0033]
Here, for example, fine dust having a diameter smaller than the eyes of a filter such as a paper bag used in the dust collecting portion passes through the electric blower without being completely collected in the dust collecting portion. The dust collecting filter 6 provided in the exhaust path uses a filter made of non-woven fabric or the like. The carbon dust of the motor and fine dust leaking from the dust collecting part are collected by the dust collecting filter 6. The
[0034]
Here, the dust collection filter 6 is preferably composed of a filter electretized to a polarity opposite to the polarity of the dust charged in the static electricity generation passage 7.
[0035]
FIG. 5 is a partial cross-sectional view of the dust collection filter 6. In FIG. 5, the dust collection filter 6 is electret-processed and is negatively charged. When the positively charged dust 9 passes through the dust collection filter 6, electrostatic dust collection by electrostatic adsorption force is performed in addition to filtration dust collection, so that the dust collection effect is enhanced. At this time, since the fluororesin is used for the static electricity generation passage 7, the dust 9 that has passed through is unified with a positive polarity opposite to that of the dust collection filter 6, and the electrostatic adsorption force acts on most of the dust. become.
[0036]
Hereinafter, the case where the static electricity generation passage 7 is made of a fluororesin in the vacuum cleaner shown in FIG. 2 will be described. The dust 9 positively charged as described above passes through the connecting pipe 3 and the suction hose 2 and is guided to, for example, a cyclone dust collecting unit 8 configured in the cleaner body 1.
[0037]
FIG. 6 is a schematic configuration diagram of the cyclone dust collecting unit 8. The cyclone dust collecting unit 8 includes a cyclone cup 10, an inner cylinder 11, and dust collecting ribs 12. Further, an electrode (external electrode) 13 and a voltage generator 14 are provided on the cleaner body 1 side to which the cyclone cup 10 is attached.
[0038]
Here, the electrode part in the cyclone dust collecting part 8 is charged to a polarity opposite to the positively charged dust. Further, the electrode part penetrates a part of the dust collecting part, and when the dust collecting part is attached to the cleaner body, it is electrically connected to the electrode 13 outside the dust collecting part. .
[0039]
More specifically, the dust collecting rib 12 as an electrode portion is made of metal, and a part thereof penetrates the cyclone cup 10 and is exposed to the outside of the cyclone cup 10. In the state where the cyclone cup 10 is attached to the cleaner body 1, the exposed portion of the dust collecting rib 12 is electrically connected to the electrode 13 on the cleaner body 1 side, and the voltage supplied from the voltage generator 14 is used. Keep negative potential.
[0040]
The dust 9 positively charged as described above passes through the connecting pipe 3 and the suction hose 2 and is guided to, for example, a cyclone dust collecting unit 8 configured in the cleaner body 1. When the positively charged dust 9 passes through the cyclone dust collecting portion 8, electrostatic dust collection due to electrostatic attraction force occurs between the dust collecting ribs 12 having a negative potential in addition to centrifugal dust collection. As a result, the dust collection effect is enhanced. Since fluororesin is used for the static electricity generation passage 7, the dust 9 that has passed through is unified with a positive polarity opposite to that of the dust collecting rib 12, and an electrostatic adsorption force acts on most of the dust. .
[0041]
FIG. 7 is a schematic configuration diagram of the cyclone dust collecting unit 8 and shows a state where the cyclone cup 10 is removed from the cleaner body 1.
[0042]
When the dust collection part is removed from the cleaner body, it is electrically separated from the electrode 13 outside the dust collection part. Thereby, when the user takes out the cyclone cup 10 for throwing away the dust, the dust collecting rib 12 is electrically separated from the electrode 13 and can be safely thrown away without any problems such as electric shock. Further, when the waste is discarded, the potential of the dust collecting rib 12 is dissipated and the electrostatic attraction force is reduced, so that the waste can be easily discarded.
[0043]
Although the embodiments of the present invention have been described above, the embodiments disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
[0044]
【The invention's effect】
According to the electric vacuum cleaner of the present invention, in addition to the physical dust collecting mechanism, the sucked dust can be charged by static electricity and can be adsorbed to the dust collecting part or the dust collecting filter using the electrostatic adsorption force. Therefore, the dust collection effect can be enhanced without making the dust collection bag or the filter finer, or providing the dust collection part or the filter in multiple stages. As a result, it has become possible to provide a vacuum cleaner with a high dust collection effect without reducing the suction force.
[Brief description of the drawings]
FIG. 1 is an overall view of a paper bag type vacuum cleaner according to a first embodiment of the present invention.
FIG. 2 is an overall view of a cyclone type vacuum cleaner according to a second embodiment of the present invention.
FIG. 3 is a schematic configuration diagram of a static electricity generation path according to Embodiment 1 of the present invention.
FIG. 4 is a partial cross-sectional view of a paper bag as a dust collecting unit according to Embodiment 1 of the present invention.
FIG. 5 is a partial cross-sectional view of the dust collection filter according to Embodiment 1 of the present invention.
FIG. 6 is a schematic configuration diagram of a cyclone dust collecting portion according to Embodiment 2 of the present invention (when the main body is attached).
FIG. 7 is a schematic configuration diagram (when the main body is removed) of a cyclone dust collecting unit according to Embodiment 2 of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body, 2 Suction hose, 3 Connection pipe, 4 Air inlet, 5 Paper bag, 6 Dust collection filter, 7 Static electricity generation path, 8 Cyclone dust collection part, 9 Garbage, 10 Cyclone cup, 11 Inner cylinder, 12 Dust collection Ribs, 13 electrodes, 14 voltage generators.

Claims (3)

A vacuum cleaner body having an electric blower;
A suction port for sucking in garbage;
A suction path communicating with the electric blower from the suction port;
An exhaust path from the electric blower to the vacuum cleaner main body,
With
The suction path has a dust collecting part for collecting dust,
The exhaust path has a dust collecting filter for collecting dust,
At least one of the suction path and the exhaust path, the static electricity generating unit for charging the dust ,
An external electrode is further provided outside the dust collection unit,
The dust collection part is a cyclone dust collection part, and has an electrode part therein,
When the cyclone dust collecting unit is attached to the vacuum cleaner body, the electrode unit and the external electrode are electrically connected, and the voltage of the electrode unit is reduced by the voltage supplied by the external electrode. It is held at a potential of the opposite polarity to the polarity of the dust charged at the generator,
When the cyclone dust collecting part is removed from the vacuum cleaner body, the electrode part and the external electrode are electrically separated, and the electric potential of the electrode part is dissipated .   The vacuum cleaner according to claim 1, wherein the static electricity generating part is entirely or partially made of nylon or fluororesin.   The vacuum cleaner according to claim 1, wherein the dust collection filter includes a filter electretized to a polarity opposite to a polarity of dust charged by the static electricity generation unit.

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