JP2009089764A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the performance of catching fine dust in a vacuum cleaner including a dust collecting chamber for turning intake air and separating dust. <P>SOLUTION: The vacuum cleaner 100 includes: an electric blower 60 for generating the intake air; an intake air path for leading the intake air to the electric blower 60; the dust collecting chamber 50 disposed in the intake air path, for turning the intake air which flows in and separating the dust; and viscosity non-uniformizing means for non-uniformizing viscosity to the stream of the intake air flowing near the inner peripheral wall surface 52a of the dust collecting chamber 50. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention generally relates to a vacuum cleaner, and more particularly to a vacuum cleaner provided with a dust collector that separates dust by turning at least inflowing intake air such as a cyclone dust collector.

  For example, in a vacuum cleaner equipped with a conventional cyclone dust collection chamber that has a dust collecting device that swirls the inflowing air to separate the dust, the dust is quickly contained in the dust cup container. It is swung and separated by centrifugal force. However, fine dust is not easily affected by centrifugal force due to its small mass and escapes from between the eyes of the inner cylinder mesh filter. For this reason, another filter such as a HEPA filter (High Efficiency Particulate Air Filter) is required downstream of the cyclone dust collection chamber in order to capture fine dust.

In Japanese Patent Laid-Open No. 2005-110964 (Patent Document 1), fine dust that tends to fly when dust or the like in a dust collection chamber is thrown away into a garbage bag or the like is not sanitized and is sanitized. As a vacuum cleaner that can be used, a fluid semi-solid substance is introduced into a dust collection chamber, and the dust in the dust collection chamber is mixed with the fluid semi-solid substance.
JP 2005-110964 A

  However, dust particles that can be centrifuged by a swirling airflow are particles having a particle diameter of 2 μm or more at most. Fine particles with a particle size of 2 μm or less cannot be centrifuged by a swirling airflow, and are fixed to a filter disposed downstream of the cyclone dust collection chamber, or electrostatically adsorbed to a place other than the inner wall of the dust cup There is a problem of being discharged together with air from the exhaust port.

  SUMMARY OF THE INVENTION An object of the present invention is to improve the performance of collecting fine dust in a vacuum cleaner provided with a dust collection chamber that swirls intake air to separate dust.

  An electric vacuum cleaner according to the present invention includes an electric blower that generates intake air, an intake passage that guides the intake air to the electric blower, a dust collection chamber that is disposed in the intake passage and that swirls inflowing air to separate dust. Viscous non-uniformity means for making the viscosity of the air flow of the intake air flowing near the inner peripheral wall surface of the dust collecting chamber non-uniform.

  Since it is configured in this manner, turbulence can be generated in the intake air flowing near the inner peripheral wall surface by making the viscosity of the air flow flowing near the inner peripheral wall surface of the dust collecting chamber non-uniform. This makes it easy to collect fine dust particles on the inner peripheral wall surface. Therefore, the collection performance of fine dust can be improved.

  In the electric vacuum cleaner according to the present invention, it is preferable that the non-uniform viscosity means includes a plurality of grooves arranged at intervals in the circumferential direction on the inner peripheral wall surface of the dust collecting chamber.

  Thus, by arranging a plurality of grooves in the inner circumferential wall surface of the dust collection chamber at intervals in the circumferential direction, the viscosity of the intake airflow flowing near the inner circumferential wall surface of the dust collection chamber can be made non-uniform. it can.

  Moreover, in the vacuum cleaner of this invention, it is preferable that a viscosity non-uniform | heterogenous means contains the some projection part arrange | positioned at the inner peripheral wall surface of a dust collection chamber.

  By arranging a plurality of protrusions on the inner peripheral wall surface of the dust collection chamber in this way, for example, by arranging the plurality of protrusion portions uniformly or non-uniformly, the intake air flowing near the inner peripheral wall surface of the dust collection chamber can be reduced. The viscosity with respect to the airflow can be made non-uniform.

  Furthermore, it is preferable that the electric vacuum cleaner of the present invention further includes a conductive silicon rubber member fixed to the inner peripheral wall surface of the dust collection chamber.

  By fixing the conductive silicon rubber member to the inner peripheral wall surface of the dust collecting chamber in this way, fine dust particles can be adsorbed to the silicon rubber member fixed to the inner peripheral wall surface, so that downstream It is possible to prevent clogging of the filter disposed in the. In addition, even if fine dust particles cannot be collected even if they come into contact with the silicon rubber member, the conductive property of the silicon rubber member eliminates static electricity by making the fine particles charged by air friction contact the silicon rubber member. Can be prevented and accumulation of static electricity can be prevented. Thereby, it is possible to prevent fine particles from being electrostatically adsorbed to other than the inner peripheral wall surface of the dust collecting chamber. As a result, it becomes easy to collect fine dust particles on the inner peripheral wall surface. Therefore, the collection performance of fine dust can be improved.

  In this case, it is preferable that the silicon rubber member includes a plurality of silicon rubber members disposed on the inner peripheral wall surface of the dust collecting chamber at intervals in the circumferential direction.

  Thus, by arranging a plurality of silicon rubber members at intervals in the circumferential direction on the inner peripheral wall surface of the dust collection chamber, for example, by arranging a plurality of silicon rubber members in a lattice shape, the inside of the dust collection chamber Viscosity with respect to the airflow of the intake air flowing in the vicinity of the peripheral wall can be made non-uniform, and static electricity can be eliminated by the fine particles coming into contact with the silicon rubber member, so that accumulation of static electricity can be prevented.

  As described above, according to the electric vacuum cleaner of the present invention, it is easy to collect fine dust particles on the inner peripheral wall surface, so that the fine dust collecting performance can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a schematic overall configuration of a vacuum cleaner as one embodiment of the present invention.

  As shown in FIG. 1, the vacuum cleaner 100 of the present invention includes a suction port body 1, a connecting pipe 2, a hand handle 3, a suction hose 4, and a vacuum cleaner body 5. The connection pipe 2 and the suction hose 4 constitute a supply path for supplying the air sucked from the suction port body 1 to the electric vacuum cleaner main body 5. The suction port body 1 sucks air through an air suction port (not shown) by the operation of the electric blower 60 (FIG. 2) built in the vacuum cleaner body 5. A hand handle 3 is attached to the connection pipe 2 to move the suction port body 1, and a large wheel 6 and an auxiliary wheel 7 are attached to the vacuum cleaner body 5 to move the vacuum cleaner body 5. .

  FIG. 2 is a cross-sectional view showing a schematic overall configuration of the interior of the electric vacuum cleaner main body 5 shown in FIG.

  As shown in FIG. 2, the vacuum cleaner body 5 includes a dust collection chamber 50 having an intake port 51 for sucking air containing dust, an electric blower 60 connected to the dust collection chamber 50 to generate intake air, A fine dust removing filter 70 for removing fine dust from the intake air that has passed through the blower 60, an exhaust port 80 that is disposed on the downstream side of the filter 70 and discharges air after the dust has been removed, and an electric blower 60 and the like. The suction hose 4 is connected to the intake port 51. The dust collection chamber 50 is disposed in an intake passage that guides intake air to the electric blower 60.

  FIG. 3 is a perspective view showing a schematic configuration of the inside of the dust collection chamber 50 shown in FIG.

  As shown in FIG. 3, an intake port 51 is disposed at one end of a substantially cylindrical dust collection chamber 50, and an exhaust port 56 is disposed at the other end. A dust cup 52 for accumulating dust collection is provided below the dust collection chamber 50. In the dust collection chamber 50, a cylindrical mesh filter portion 55 disposed at the upper portion, a dust collection chamber 54 separated by a separation blade disposed at the lower portion, and the mesh filter portion 55 and the dust collection chamber 54. A partition plate 53 for partitioning is provided.

  In the electric vacuum cleaner configured as described above, when the electric blower 60 is driven, air is sucked from the air suction port of the suction port body 1, and intake air including dust is collected through the connection pipe 2 and the suction hose 4. Sent to chamber 50. In the dust collection chamber 50, dust is separated from the air by centrifugal force and accumulated in the dust cup 52 by turning the intake air flowing into the dust collection chamber 50 as indicated by an arrow. On the other hand, the air from which the dust has been removed is then filtered through the mesh filter portion 55 of the dust collection chamber 50 to become air containing fine dust. The air containing fine dust is discharged from the exhaust port 56 of the dust collecting chamber 50 as indicated by an arrow, and is further finely filtered by a filter (not shown) arranged on the upstream side of the electric blower 60 to remove fine dust. It becomes air containing. The air containing fine dust passes through the electric blower 60 and then passes through the final fine dust removing filter 70 to become air containing ultrafine dust. Air containing ultrafine dust is discharged out of the machine through the exhaust port 80 of the vacuum cleaner body 5.

  As shown in FIG. 3, in the dust collection chamber 50, a swirling airflow A is generated as indicated by an arrow in the intake air including dust. A swirling airflow B is generated in the dust collecting compartment 54 separated by the partition plate 53 as indicated by an arrow. The swirling airflow B becomes stagnation, and the swirling airflow A does not flow directly into the dust collecting compartment 54, and a turbulent flow C is generated near the partition plate 53 as indicated by an arrow. The swirling airflow A is connected to the turbulent flow C, and fine dust is separated into the dust collecting compartment 54 by the turbulent flow C. However, since the turbulent flow C is generated only in the vicinity of the partition plate 53, the minute dust pushed out into the dust collecting chamber 54 by the turbulent flow C is very small and passes through the mesh filter portion 55 to remove the fine dust. It is collected by the filter 70 for use. Thus, fine dust cannot be separated and collected from the air by centrifugal force in the dust collection chamber 50. Further, fine dust adheres to the fine dust removing filter 70, is electrostatically adsorbed to other than the inner peripheral wall surface of the dust cup 52, or ultra fine dust that has passed through the fine dust removing filter 70 as described above. The contained air is discharged from the exhaust port 80 of the vacuum cleaner body 5 to the outside of the machine. In order to solve such a problem, the electric vacuum cleaner of the present invention is provided with non-uniform viscosity means for making the viscosity of the intake airflow flowing in the vicinity of the inner peripheral wall surface of the dust collecting chamber non-uniform. Hereinafter, specific embodiments of the non-uniform viscosity means will be described.

  FIG. 4 is a perspective view showing the configuration of the inner peripheral wall surface of the dust collecting chamber as one embodiment of the present invention.

  As shown in FIG. 4, as an example of the non-uniform viscosity means, a plurality of grooves 58 are arranged in a lattice pattern at intervals in the circumferential direction on the inner peripheral wall surface 52 a of the dust collection chamber. A silicon rubber member 57 processed into a plate shape is fixed between the plurality of groove portions 58 on the inner peripheral wall surface 52a of the dust collection chamber (the portion hatched in FIG. 4). The silicon rubber member 57 has conductivity.

  As described above, by arranging the plurality of grooves 58 at intervals in the circumferential direction on the inner peripheral wall surface 52a of the dust collecting chamber, the viscosity of the intake airflow flowing in the vicinity of the inner peripheral wall surface 52a of the dust collecting chamber becomes non-uniform. can do. Thereby, the turbulent flow D can be generated in the intake air flowing in the vicinity of the inner peripheral wall surface 52a as shown by an arrow in FIG. As a result, it becomes easy to collect fine dust particles on the inner peripheral wall surface 52a. Therefore, the collection performance of fine dust can be improved. That is, fine dust particles having a particle size of 2 μm or less, for example, due to turbulent flow D generated by making the viscosity with respect to the airflow of the intake air nonuniform on the surface of the inner peripheral wall surface 52a of the dust cup 52, are reduced. The fine dust removal filter 70 can be prevented from being clogged because it stays inside and can be collected, and fine dust particles pass through the fine dust removal filter 70 and are released into the outside air. Can be prevented.

  In addition, by adhering the conductive silicon rubber member 57 to the inner peripheral wall surface 52a of the dust collecting chamber as described above, fine dust particles are adsorbed to the silicon rubber member 57 fixed to the inner peripheral wall surface 52a. Therefore, clogging of the fine dust removing filter 70 arranged downstream can be prevented. Further, even when fine dust particles cannot be collected even if they come into contact with the silicon rubber member 57, the fine dust particles charged by air friction contact the silicon rubber member 57 due to the conductivity of the silicon rubber member 57. By doing so, static electricity can be removed and accumulation of static electricity can be prevented. Thereby, it is possible to prevent the fine particles from being electrostatically adsorbed to other than the inner peripheral wall surface 52a of the dust collecting chamber. As a result, it becomes easy to collect fine dust particles on the inner peripheral wall surface 52a. Therefore, the collection performance of fine dust can be improved.

  In the case of this embodiment, the plurality of silicon rubber members 57 are arranged at intervals in the circumferential direction on the inner peripheral wall surface 52a of the dust collecting chamber. For example, the plurality of silicon rubber members 57 are arranged in a lattice shape. Since it is arranged, the viscosity of the air flow of the intake air flowing in the vicinity of the inner peripheral wall surface 52a of the dust collecting chamber can be made non-uniform and the fine particles can be discharged by contacting the silicon rubber member 57, Accumulation of static electricity can be prevented.

  FIG. 5 is a perspective view showing the configuration of the inner peripheral wall surface of the dust collection chamber as another embodiment of the present invention.

  As shown in FIG. 5, as in FIG. 4, as an example of the non-uniform viscosity means, a plurality of grooves 58 are arranged on the inner peripheral wall surface 52 a of the dust collecting chamber in a lattice pattern with a space between each other in the circumferential direction. Has been. A silicon rubber member 57 processed into a plate shape is fixed between the plurality of groove portions 58 on the inner peripheral wall surface 52a of the dust collection chamber (the hatched portion in FIG. 5). The silicon rubber member 57 has conductivity. Furthermore, in this embodiment, as another example of the non-uniform viscosity means, a plurality of protrusions 59 are uniformly or regularly formed on the surface of the silicon rubber member 57 fixed to the inner peripheral wall surface 52a of the dust collection chamber. Is arranged.

  Since it is configured in this way, in addition to the operational effects obtained by the embodiment shown in FIG. 4, it is possible to arrange a plurality of protrusions 59 on the inner peripheral wall surface 52a of the dust collection chamber, for example, a plurality of protrusions. By arranging the portions 59 uniformly or regularly, it is possible to make the viscosity of the intake airflow flowing in the vicinity of the inner peripheral wall surface 52a of the dust collecting chamber nonuniform. As a result, the turbulent flow D can be more significantly generated in the intake air flowing in the vicinity of the inner peripheral wall surface 52a as shown by the arrow in FIG. As a result, it becomes easier to collect fine dust particles on the inner peripheral wall surface 52a. Therefore, the collection performance of fine dust can be further improved.

  As shown in FIG. 6, when the plurality of protrusions 59 are unevenly or irregularly arranged on the surface of the silicon rubber member 57 fixed to the inner peripheral wall surface 52a of the dust collection chamber. In addition, the viscosity of the intake airflow flowing in the vicinity of the inner peripheral wall surface 52a of the dust collecting chamber can be made nonuniform. As a result, the turbulent flow D can be more significantly generated in the intake air flowing in the vicinity of the inner peripheral wall surface 52a as shown by the arrow in FIG. 6, and thus the above-described effect can be achieved.

  Further, as shown in FIG. 7, as yet another example of the non-uniform viscosity means, the silicon rubber member is not fixed to the inner peripheral wall surface 52a of the dust collecting chamber, and a plurality of protrusions are directly formed on the inner peripheral wall surface 52a. By arranging the portions 59 uniformly or regularly, or by arranging them non-uniformly or irregularly, the viscosity of the air flow of the intake air flowing in the vicinity of the inner peripheral wall surface 52a of the dust collecting chamber is made non-uniform. be able to. Thereby, the turbulent flow D can be generated in the intake air flowing in the vicinity of the inner peripheral wall surface 52a as shown by the arrow in FIG. As a result, it becomes easy to collect fine dust particles on the inner peripheral wall surface 52a. Therefore, the collection performance of fine dust can be improved.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

It is a perspective view showing the schematic whole structure of a vacuum cleaner as one embodiment of the present invention. It is sectional drawing which shows the schematic whole structure inside the vacuum cleaner main body shown by FIG. It is a perspective view which shows the schematic structure inside the dust collection chamber 50 shown by FIG. It is a perspective view which shows the structure of the inner peripheral wall surface of a dust collection chamber as one embodiment of this invention. It is a perspective view which shows the structure of the inner peripheral wall surface of a dust collection chamber as another embodiment of this invention. It is a perspective view which shows the structure of the inner peripheral wall surface of a dust collection chamber as another embodiment of this invention. It is a perspective view which shows the structure of the inner peripheral wall surface of a dust collection chamber as another embodiment of this invention.

Explanation of symbols

  50: dust collection chamber, 52: dust cup, 52a: inner peripheral wall surface, 57: silicon rubber member, 58: groove, 59: protrusion, 60: electric blower, 100: vacuum cleaner.

Claims (5)

An electric blower that generates intake air;
An intake passage for guiding intake air to the electric blower;
A dust collection chamber disposed in the intake passage and configured to rotate the intake air to separate dust.
An electric vacuum cleaner comprising non-uniform viscosity means for making non-uniform viscosity with respect to an air flow of intake air flowing in the vicinity of an inner peripheral wall surface of the dust collection chamber.   2. The electric vacuum cleaner according to claim 1, wherein the non-uniform viscosity means includes a plurality of grooves arranged at intervals in the circumferential direction on an inner peripheral wall surface of the dust collection chamber.   The vacuum cleaner according to claim 1 or 2, wherein the non-uniform viscosity means includes a plurality of protrusions arranged on an inner peripheral wall surface of the dust collection chamber.   The vacuum cleaner according to any one of claims 1 to 3, further comprising a conductive silicon rubber member fixed to an inner peripheral wall surface of the dust collection chamber.   5. The vacuum cleaner according to claim 4, wherein the silicon rubber member includes a plurality of silicon rubber members disposed on the inner peripheral wall surface of the dust collecting chamber at intervals in the circumferential direction.

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