JP5309738B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to an electric vacuum cleaner having a cyclone dust collecting section that swirls intake air to separate dust.

A vacuum cleaner called a cyclone system has a dust collecting unit and an electric blower in the main body of the vacuum cleaner, and the dust collecting unit has a dust separating unit for centrifuging dust, a dust collecting chamber for compressing and storing the centrifuged dust, and It is arranged separately and can be collected when you want to collect dust and throw it away, and it is widely used because it does not require replacement of a paper pack to collect dust compared to a paper pack type vacuum cleaner It is popular.
JP 2003-52590 A

  However, the conventional cyclone type vacuum cleaner centrifuges the dust mixed in the suction air by the swirling flow, so that the dust is rubbed against each other, or the dust is rubbed against the wall of the dust collecting part. . In addition, when dust is pressed against the dust collection chamber by a mechanism that compresses the dust in the dust collection chamber of the dust collection section, when the user tries to throw away the dust in the dust collection chamber, the dust is removed from the dust collection chamber. It did not fall easily, and it took time and effort to get dust out of the dust collection chamber. In addition, dust charged by centrifugal separation adheres to the inner wall of the dust collection unit, the filter, etc., and the dust removal efficiency of the filter is lowered, and the user cannot easily remove the dust in the dust collection chamber. . In some cases, when the user touches the charged dust collecting portion, the entire amount of static electricity charged instantaneously is discharged and receives an electric shock, and the user is dissatisfied.

  The present invention solves such a problem, and can greatly reduce the trouble of throwing away dust in the dust collecting part, can easily remove the filter clogging, and does not give an electric shock to the user. It is an object of the present invention to provide a vacuum cleaner with good usability that can easily perform the work associated with dust removal from a part.

In order to solve the above-described conventional problems, a vacuum cleaner of the present invention includes a vacuum cleaner body including an electric blower that generates suction air, and a dust collector that is detachably disposed on the vacuum cleaner body and collects dust. A suction passage for transferring dust to the dust collection portion by suction air generated by operation of the electric blower, a contact member disposed at a position in contact with the dust collection portion of the cleaner body, and the cleaning A portion in contact with dust sucked into the dust collecting portion, comprising: a discharge resistance substrate disposed in the machine body; and a power supply board disposed in the cleaner body and supplying power from the commercial power supply to the electric blower. The contact member is made of conductive rubber, one end of the discharge resistance substrate is connected to the contact member, and the other end is the power source. Conductive resistor connected to the board Are arranged, the conductive material wherein the dust collecting unit configured in said contact member, said discharge resistance substrate, and, through the power supply substrate, a structure that is electrically connected to a commercial power supply . As a result, the static electricity generated between the dust due to the swirling flow and the static electricity generated when the dust rubs against the inner wall of the dust collection part are electrically connected to the commercial power supply at the part of the dust collection part that contacts the dust. By doing so, static elimination becomes possible. By eliminating static electricity, it is possible to suppress the adhesion of dust, especially fine dust, and when throwing away dust in the dust collection chamber, the separation of dust from the dust collection chamber is improved, so that dust can be easily discarded. The user's trouble can be greatly reduced. In addition, it is possible to provide a vacuum cleaner with good usability that does not give an electric shock to the user.

  The vacuum cleaner of the present invention eliminates the dust generated by the swirling flow and the static electricity of the dust collecting part, thereby facilitating the user to remove the dust of the dust collecting part without reducing the dust removing efficiency of the filter. . And the user-friendly vacuum cleaner which does not receive an electric shock when a user touches a dust collection part can be provided.

The first invention is generated by the operation of the vacuum cleaner main body including the electric blower that generates the suction air, the dust collecting unit that is detachably disposed on the vacuum cleaner main body, and collects dust, and the electric blower. A suction passage for transferring dust to the dust collector by suction air; a contact member disposed at a position in contact with the dust collector of the cleaner body; a discharge resistance substrate disposed in the cleaner body; A power supply board disposed in the vacuum cleaner body and supplying power from the commercial power supply to the electric blower, and all or part of the part in contact with the dust sucked into the dust collecting part is made of a conductive material. The contact member is made of conductive rubber, and a conductive resistor having one end connected to the contact member and the other end connected to the power supply substrate is disposed on the discharge resistance substrate. And composed of the conductive material The dust collecting part that is, the contact member, the discharge resistance substrate, and, through the power supply substrate, characterized in that is electrically connected to a commercial power source, between the dust by swirling flow The static electricity that has been generated and the static electricity that has been generated when the dust rubs against the inner wall of the dust collector can be removed by electrically connecting the part of the dust collector that contacts the dust to the commercial power supply. In particular, adhesion of fine dust can be suppressed. The dust collection efficiency of the filter does not need to be significantly reduced. Further, when the user throws away the dust in the dust collecting chamber, the separation of the dust from the dust collecting chamber is improved, so that the dust can be easily thrown away, and the user's trouble of dust removal can be greatly reduced. And the vacuum cleaner with good usability which does not give an electric shock to a user can be provided. Moreover, 1st invention comprised the contact member arrange | positioned in the path | route which electrically connects the electrically-conductive material of a dust collection part, and a commercial power source with the electrically conductive rubber, It is characterized by the above-mentioned. For example, in a vacuum cleaner having a dust collection part that can be removed from the vacuum cleaner body, the electrical contact between the vacuum cleaner body and the dust collection part is made of conductive rubber. Thereby, since an electrical connection can be ensured without exposing a metal part to the place which a user may touch, a safe electric vacuum cleaner can be provided.

  In a second aspect of the invention, in particular, the dust collection part of the first aspect of the invention includes a separation chamber that centrifuges dust from an air flow containing dust in a swirling flow, and the separation chamber includes a fine dust filtration filter, The fine dust filter is composed of all or part of a conductive material, and is electrically connected to the conductive material and a commercial power supply. The dust collection efficiency of the filter does not need to be significantly reduced since the dust can be removed with the force of the suction air. And when the user throws away the dust in the dust collecting chamber, the dust separation from the dust collecting chamber is also improved, so the dust can be easily thrown away, and the user can greatly reduce the trouble of cleaning the filter. .

In the third invention, in particular, the dust collecting chamber of the first or second invention is removable from the cleaner body, and opens a discharge port for discharging dust collected by centrifugation from the dust collecting chamber. The opening / closing lid is provided with a conductive material, all or part of which is electrically connected to the conductive material and a commercial power source. As a result, when the user throws away the dust in the dust collection chamber, the dust attached to the opening / closing lid becomes more easily separated from the dust, so the user can greatly reduce the maintenance work of the dust collection chamber when throwing away the dust. .

A fourth invention is, in particular, in an electric vacuum cleaner of any one invention of the first to third invention, the conductive resistance element is characterized in that was 100kΩ~100MΩ the electric resistance of the conductive resistor Therefore, even if there is a leakage from a commercial power source, it is possible to provide a safe electric vacuum cleaner that satisfies the technical standards without leaking current of 1 milliA or more and has no risk of electric shock. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  1 is a perspective view of a main body of a vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a side view of the main body, FIG. 3 is a side sectional view of the main body, and FIG. is there.

  In the figure, reference numeral 1 denotes a vacuum cleaner main body, a traveling wheel 2 is provided at the lower portion of the vacuum cleaner main body 1, and a traveling roller 3 is provided on a side surface of the cleaner main body. In addition, an air inlet 4 for connecting a hose to the front of the vacuum cleaner main body 1 and an electric blower 5 for sucking dust to the rear are arranged, and dust collection for accommodating dust between the air inlet 4 and the electric blower 5 is provided. A portion 6 (hereinafter referred to as a dust box 6) is detachably disposed on the cleaner body 1. In addition, a power cord 8 and a power plug 9 are arranged at the rear of the vacuum cleaner body 1 and connected to an outlet installed on the wall of the house to supply commercial power to the electric blower 5. It is configured to do.

  In the operation according to the above configuration, the dust sucked by the electric blower 5 is accommodated in the dust box 6. The stored dust can be discharged by removing the dust box 6 from the cleaner body 1 and opening the opening / closing lid 7 as the bottom lid as shown in FIG.

  Next, the structure of the dust box 6, which is a feature of the cyclone method, will be described.

  The dust box 6 is disposed above the dust box 6, and dust is generated from the air inlet 4 that generates a swirl flow B by flowing an air flow A including dust in a tangential direction in the dust box 6 and the air flow including the dust of the swirl flow B. A substantially cylindrical separation chamber 10 for centrifugal separation and a dust collection chamber 11 for collecting the separated dust are formed. The cylindrical side surface (circumferential surface) of the separation chamber 10 has a hole of about 0.2 microns. It is formed by an open metal fine dust filter 12 (hereinafter referred to as a mesh filter 12). Further, a pleated filter 13 is disposed on the outer periphery of the mesh filter 12 so as to further filter fine dust that has passed through the mesh filter 12. A space between the mesh filter 12 and the pleat filter 13 is a fine dust separation chamber 14.

  A fine dust chamber 15 for collecting fine dust is formed below the pleated filter 13, and the fine dust chamber 15 and the dust collection chamber 11 below the separation chamber 10 are integrally joined.

  The open / close lid 7 is a lid that opens and closes the fine dust chamber 15 and the dust collection chamber 11, and is locked by a hook 16, so that the fine dust chamber 15 and the dust collection chamber 11 that are in contact with the open / close lid 7. A tight packing 17 is attached to the lower end.

  The intake port 4 is provided so as to penetrate the pleat filter 13 and the separation chamber 10, and an air passage (gap) is provided between the pleat filter 13 and the separation chamber 10 around the intake port 4. .

18 is a circular packing for tightly fitting the air inlet 4 of the dust box 6 and the air inlet 4 of the vacuum cleaner body 1, 19 is a hinge of the open / close lid 7 and 20 is a frame covering the pleat filter 13, It is joined to the plate 21 and the fine dust chamber 15 to ensure the rigidity of the dust box 6.

  About the vacuum cleaner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the electric blower 5 starts operation, suction air is generated. The suction pressure generated from the suction air of the electric blower 5 is uniformly applied to the dust box 6, so that air enters the tangential direction of the separation chamber 10 from the air inlet 4.

  A mesh filter 12 having a hole of about 0.2 microns is attached to the separation chamber 10, and the density of the opening holes is gradually increased from coarse to dense as it falls from the upper part to the lower part.

  Since the mesh filter 12 captures coarse dust such as cotton dust and has coarse eyes but is not completely open, a part of the air in the separation chamber 10 is discharged outside the separation chamber 10 and is partially Becomes a swirl flow B in the separation chamber 10.

  In the separation chamber 10, while the suction air containing dust is rotated by the swirling flow, the airflow and dust are centrifuged, and the dust is collected in the dust collection chamber 11.

  Since the mesh filter 12 has a higher density of opening holes toward the top of the separation chamber 10, the opening area ratio is smaller. For this reason, there are many swirling airflows in the upper part, and the density of the opening holes is made denser as it goes downward. Therefore, the opening area ratio is large and the swirling flow is reduced, and the airflow discharged outside the separation chamber 10 is increased.

  Therefore, the dust that has fallen into the lower dust collection chamber 11 hardly rises and accumulates in the dust collection chamber 11. Further, the cotton dust separated by the swirling flow is solidified while swirling, and rotates while cleaning the surface of the mesh filter 12.

  Thus, since the swirl flow B is generated inside the separation chamber 10, the airflow discharged into the fine dust separation chamber 14 flows out along the swirl flow B, and the circumferential direction of the separation chamber 10 (the tangential direction of the circle). To be discharged.

  The air that has entered the fine dust separation chamber 14 swirls along the pleated filter 13, but is discharged from the opening hole of the mesh filter 12 to a space having a large flow area (fine dust separation chamber 14). The fine dust easily falls and falls, and the separation action of the airflow and fine dust by the swirling flow is promoted. The separated fine dust falls in the fine dust chamber 15 and remains.

  The clean air in which the fine dust is collected is discharged from the opening 22 of the frame body 20, sucked by the electric blower 5, and then discharged outside the cleaner body 1.

  Next, the mechanism of static elimination will be described.

  First, the material of each part is demonstrated using FIG.

The portion in contact with the dust sucked in the dust box 6 is made of a conductive material. In the present embodiment, the inner wall of the suction port 4 that is in contact with the air flow A containing dust, the substantially cylindrical separation chamber 10 that centrifuges dust from the air flow containing dust in the swirl flow B, and the separated dust are collected. The inner wall of the dust collecting chamber 11, the top plate 21, the inner wall of the fine dust chamber 15, the open / close lid 7 and the hook 16 are each made of conductive resin, and the mesh filter 12 of the separation chamber 10 is made of metal, for example, stainless steel. doing. Further, the tight packing 17 is made of conductive rubber. And each part is contact | abutting and contacting, The electrical conduction is maintained.

  The dust box 6 configured as described above is configured by a part of the dust box 6 (the hook 16 in the present embodiment) and the conductive rubber provided in the cleaner body 1 by being attached to the cleaner body 1. The contact member 23 (blacked portion) thus made contact. Since the contact member 23 is an electrical connection portion exposed to an outer portion that can be touched by the user when the dust box 6 is removed from the cleaner body 1, conductive rubber is used instead of metal.

  Further, since the contact member 23 is connected to the discharge resistance substrate 24 by the lead wire 25, the dust box 6 maintains electrical continuity with the discharge resistance substrate 24 through the contact member 23. .

  Subsequently, an electric circuit configuration will be described with reference to FIGS. 5 and 6.

  Two discharge resistors 26 for high voltage and having a resistance value of 1.8 MΩ are arranged in series on the discharge resistance substrate 24 (total 3.6 MΩ), one end is on the dust box 6 side and the other end side is on the commercial side. The power supply 27 is electrically connected to a power supply board 28 that supplies power to the electric blower 5.

  The dust box 6 made of a conductive material that realizes conduction with the discharge resistance substrate 24 is electrically connected to a 100 V power supply line that is a commercial power supply 27.

  However, since the discharge resistor 26 has a resistance of 3.6 MΩ for two in the meantime, the leakage current flowing through the dust box 6 is suppressed to 0.03 mA or less and insulated from the power supply line. (For example, when a 1 MΩ resistor is used, the leakage current is 0.1 mA. If a 100 MΩ resistor is used, the current that flows even when static electricity of 10 kV is applied is suppressed to 0.1 mA. be able to.).

  However, while maintaining insulation, a small amount of charge can travel between the dust box 6 and the 100V power supply line, so that the static electricity of the parts made of the conductive material of the dust box 6 can be transferred to the 100V power supply line. I can escape.

  That is, although insulated, it is electrically grounded.

  As described above, the charge in the portion of the dust box 6 in contact with the dust can be neutralized to near 0V.

  That is, according to the present invention, by reducing the electrical coupling force between the dust charged by the swirling flow and the mesh filter 12 of the separation chamber 10, it is possible to suppress a reduction in dust removal efficiency due to the dust adhesion of the mesh filter 12.

  Further, by weakening the electrical coupling force between the fine dust that has entered the fine dust separation chamber 14 and the inner surface of the fine dust separation chamber 14, adhesion of fine dust is suppressed, and the fine dust chamber 15 in the downward direction is brought into contact with the fine dust separation chamber 14. , Fine dust can be easily dropped and fine dust can be easily collected.

  Further, when the user opens the open / close lid 7 to throw away the dust in the dust box 6 as shown in FIG. 4, the dust collection chamber 11, the fine dust chamber 15, the open / close lid 7, and the dust (roughness) By reducing the electrical coupling force to the dust box, dust separation from the dust box 6 is improved, so that the user can greatly reduce the trouble of cleaning (maintenance) of the dust box 6 and perform usability. A good vacuum cleaner can be provided.

  As described above, the electric vacuum cleaner according to the present invention is a useful technique for an apparatus having a cyclone dust collecting section that swirls intake air to separate dust.

Main body perspective view of electric vacuum cleaner in Embodiment 1 of the present invention Side view of the main body of the vacuum cleaner Side view of the main body of the vacuum cleaner Side sectional view of the dust collection part when throwing away trash Side sectional view of the main body showing the electrical connection of the vacuum cleaner Electrical circuit diagram of the main parts of the vacuum cleaner

5 Electric blower 6 Dust collector (dust box)
7 Opening and closing lid (bottom lid)
10 Separation chamber 12 Fine dust filter (mesh filter)
27 Commercial power supply 23 Contact member (conductive rubber)
26 Conduction resistor (discharge resistor)

Claims (4)

A vacuum cleaner main body including an electric blower that generates suction air, a dust collecting part that is detachably disposed on the main body of the vacuum cleaner, and a suction air generated by operation of the electric blower. A suction passage for transferring to the dust collector, a contact member disposed at a position in contact with the dust collector of the cleaner body, a discharge resistance substrate disposed in the cleaner body, and the cleaner body A power supply board that supplies power from the commercial power supply to the electric blower, and all or a part of the part that comes into contact with the dust sucked into the dust collecting part is made of a conductive material, The contact member is made of conductive rubber, and the discharge resistance substrate is provided with a conductive resistor having one end connected to the contact member and the other end connected to the power supply substrate. The dust collection composed of material , Said contact member, said discharge resistance substrate, and, through the power supply board, vacuum cleaner, characterized in that is electrically connected to a commercial power source. The dust collecting unit includes a separation chamber that centrifuges dust from an air flow containing dust in a swirl flow, the separation chamber includes a fine dust filtration filter, and the fine dust filtration filter conducts all or a part thereof. The vacuum cleaner according to claim 1, wherein the vacuum cleaner is made of a conductive material, and the conductive material and a commercial power source are electrically connected. The dust collecting part is detachable from the main body of the vacuum cleaner, and includes an opening / closing lid for opening a discharge port for discharging dust collected by centrifugation from the dust collecting part, and the opening / closing lid is all or one of them. The vacuum cleaner according to claim 1, wherein the portion is made of a conductive material, and the conductive material is electrically connected to a commercial power source. The conducting resistor, electric vacuum cleaner according to any one of claims 1 to 3, characterized in that was 100kΩ~100MΩ electrical resistance value of the conduction resistance thereof.

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