JP2011055974A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner which removes dust stuck in a filter by an outside air flow, surely stores the dust in a fine dust storage part without soaring thereafter, and keeps high suction force. <P>SOLUTION: In the state of performing suction by an electric blower 2, outside air inflow is generated from an opening 20 into a dust collecting case 3, and fine dust 41 stuck to the filter 13 is removed by the outside air flow 50. Also, by providing dust soaring prevention means such as a dust soaring prevention rib A 17 and a dust soaring prevention rib B 22 in the fine duststorage part 16, for the problem that the removed fine dust 41 gets on the dust stir-up prevention means, is deposited and cannot be stored in the fine dust storage part in a conventional dust removing configuration not using the outside air flow 50, the fine dust is stored in the fine dust storage part 16 without soaring again by using the outside air flow 50. The vacuum cleaner whose suction force is not easily lowered, and which maintains high suction power for a long period of time and does not need maintenance for a long period of time further, is provided. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner having a dust removing function for a filter.

  Conventionally, this type of vacuum cleaner is provided with a dust collection chamber that collects dust by negative pressure based on the rotation of the electric blower while storing the filter facing the dust suction port, and a straight line connecting the dust suction port and the filter. A compression inlet with less ventilation resistance than the dust suction opening is provided on the outer surface of the dust collection chamber, which is substantially orthogonal, so that it can be opened and closed, and the dust pressure on the front of the filter is compressed into the dust collection chamber by the wind pressure drawn from the compression inlet ( For example, see Patent Document 1).

JP 54-103261 A

  However, in the above-described conventional configuration, the air flow sucked from the compression intake port transfers dust to the dust collection chamber along the front surface of the filter, but then the air flow swirls forward and laterally along the dust collection chamber wall. For this reason, the dust does not stay in the dust collection chamber, but rises again in the forward and lateral directions. As a result, there is a problem that adhesion to the filter occurs again and the suction force decreases.

  The present invention solves the above-described conventional problem, and removes dust clogged by a filter by an outside air flow, and then reliably accommodates the dust in the fine dust container without rising, and maintains a high suction force. Is to provide a machine.

  In order to solve the above-described conventional problems, the vacuum cleaner of the present invention introduces an electric blower that emits suction air and air containing dust that is installed on the upstream side of the electric blower and sucked from the suction port by the electric blower. A dust collection case, a coarse dust separation chamber having a coarse dust filter arranged in the dust collection case for separating the coarse dust of the sucked dust, and a downstream side of the coarse dust separation chamber in the dust collection case A fine dust separation chamber provided with a filter for separating fine dust, a fine dust container provided in the fine dust separation chamber in the dust collection case, and dust rising prevention means provided in the fine dust container; An air passage that communicates the inside of the dust collection case with the outside air, and generates an outside air inflow from the air passage into the dust collection case while being sucked by the electric blower. Fine adhering to the filter Was removed, a vacuum cleaner which houses without re soar fine dust in the fine dust containing portion.

  By such an invention, even if a large amount of dust is sucked, the suction force is unlikely to decrease, a high suction work rate can be maintained for a long time, and a vacuum cleaner that does not require maintenance for a long time can be provided.

  The vacuum cleaner of the present invention is capable of providing a vacuum cleaner that can maintain a high suction work rate for a long period of time and does not require maintenance for a long period of time, even if a large amount of dust is sucked. it can.

The figure which shows the whole structure of the vacuum cleaner in Embodiment 1 of this invention. Vertical sectional view of the vacuum cleaner body of the vacuum cleaner (A) The perspective view which shows the filter of the vacuum cleaner, (b) The top view which shows the filter of the vacuum cleaner (A) Longitudinal sectional view of the vacuum cleaner in the state where the opening of the vacuum cleaner body is closed, (b) Vertical sectional view of the vacuum cleaner in the state of the opening of the vacuum cleaner body being opened Figure

  The first invention includes an electric blower that emits suction air, a dust collection case that is installed upstream of the electric blower and that introduces air containing dust sucked from a suction port by the electric blower, and the dust collection case A coarse dust separation chamber provided with a coarse dust filter for separating coarse dust of the arranged and sucked dust, and a fine filter provided with a filter arranged on the downstream side of the coarse dust separation chamber in the dust collection case for separating fine dust. The dust separation chamber, the fine dust container provided in the fine dust separation chamber in the dust collection case, the dust rising prevention means provided in the fine dust container, and the inside of the dust collection case communicate with the outside air. An external air flow from the air passage into the dust collecting case while being sucked by the electric blower, and the fine air adhering to the filter is removed by the external air flow to remove the fine air. Re-dust fine dust in the dust container By using a vacuum cleaner that can be stored without any loss, the suction force is unlikely to decrease even when a large amount of dust is sucked in, a high suction work rate can be maintained for a long time, and a vacuum cleaner that does not require maintenance for a long time. Can be provided.

  The second invention is at least one in which the gap at the entrance of the fine dust accommodating portion is narrowed in the fine dust accommodating portion and is inclined obliquely with respect to the direction of the outside air flow path, particularly as the dust rising prevention means in the first invention. By providing two dust rising prevention ribs, after removing the dust adhering to the filter by the outside air flow, it is possible to prevent the dust once stored in the fine dust storage part from rising by narrowing the gap at the entrance, and obliquely Dust can be guided to the fine dust container even at the entrance narrowed by inclining to the conventional position, and in the conventional dust removal configuration that does not use external airflow, the dust removed is carried on the dust rising prevention rib and transferred to the fine dust container. The point which has not been received can be accommodated in the fine dust accommodating portion without raising the dust by using the outside air flow.

  The third invention has at least two dust rising prevention ribs as dust rising prevention means, particularly in the first invention or the second invention, and one dust rising prevention rib is another dust rising prevention rib and fine dust storage. By providing at least a part of the gap with the inner wall, the labyrinth shape can be formed with two dust rising prevention ribs, and the dust once accommodated is more than the case of one dust rising prevention rib. In the conventional dust removal configuration that does not use the outside airflow, the dust that has been removed is placed on the dust rise prevention rib and is not transferred to the fine dust container without using the outside airflow. It can be accommodated in the dust container.

  According to a fourth aspect of the present invention, in particular, in any one of the first to third aspects of the invention, by providing an opening / closing means for opening and closing the inlet of the air passage, the inlet of the air passage is opened when a suction force is required for normal cleaning. When it is desired to close and remove the dust from the filter, the user can freely select to open the entrance of the air passage.

  According to a fifth aspect of the invention, in any one of the first to fourth aspects of the invention, an opening is provided on the upper side of the filter to connect the upstream side surface of the filter and the air passage, and the fine dust container is provided in the filter. On the other hand, since the outside airflow that flows in from the opening flows downward from the upper part of the filter, the inflow direction of the outside airflow and the direction of gravity coincide with each other. It is possible to transfer dust to the fine dust container and to prevent the stored dust from rising.

  In a sixth aspect of the invention, in particular, in any one of the first to fifth aspects, the filter is configured in a pleat shape, and the front wall surface 24 on the upstream side of the fine dust container is disposed upstream of each of the pleat-shaped peaks. When the dust adhering to the vicinity of the pleated ridge is transferred downward by the outside air flow, it flows from the upstream side wall surface of the fine dust container to the upstream side, and does not soar forward. Dust can be stored in the storage portion.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a diagram showing an overall configuration of the electric vacuum cleaner according to the first embodiment of the present invention. In FIG. 1, an electric blower chamber containing an electric blower 2 is arranged at the rear of the cleaner main body 1, and the front A dust collecting case 3 that separates and collects dust is disposed at the front, and a suction port 6 is provided at the front of the cleaner body 1 to which a connection pipe 5 provided at one end of the hose 4 is detachably connected. It has been. The other end of the hose 4 is provided with a distal end pipe 7 having a grip for cleaning, and one end of an extension tube 8 is detachably connected to the distal end pipe 7. A suction tool 9 for sucking dust on the floor is detachably connected to the end.

  FIG. 2 is a vertical sectional view of the main body of the vacuum cleaner. In FIG. 2, the main body 1 of the vacuum cleaner is provided with an electric blower chamber 18 containing the electric blower 2 at the rear, and dust is collected at the front. A coarse dust separation chamber 10 is disposed.

  The coarse dust separation chamber 10 is provided with a coarse dust filter 11 for separating coarse dust sucked by the suction air generated by the electric blower 2, and here, coarse dust such as pebbles and cotton dust is separated. The coarse dust filter 11 is preferably a member having a relatively large hole diameter through which fine dust such as sand dust can pass, such as a metal mesh, punching metal, or resin mesh. In the first embodiment, the through hole diameter is 100 to 300 microns. A metal mesh provided with through holes with minute openings is used.

  A fine dust separation chamber 12 for capturing fine dust that has passed through the coarse dust filter 11 is disposed between the coarse dust filter 11 and the electric blower 2, and a fine dust container is provided below the fine dust separation chamber 12. 16 is provided.

  The fine dust separation chamber 12 includes a pleated filter 13 in which a PTFE membrane having a through-hole diameter of about 0.5 microns is attached to the upstream side of a sheet-like filter medium made rigid by PET resin. Is held by a frame 14. The filter 13 separates and captures fine dust, and is arranged so that a mountain-and-valley portion formed by folding a pleat is in the vertical direction. This is because when the fine dust adhering to the intake surface of the filter 13 is removed, the fine dust separated from the intake surface of the filter 13 is guided to the fine dust accommodating portion 16 provided below.

  The intake surface of the filter 13 here is an upstream filter surface into which the suction air generated by the electric blower 2 enters. The filter 13 may have other shapes such as a flat plate shape instead of a pleat shape. Moreover, although the dust is separated using the two filters of the coarse dust filter 11 and the filter 13, a single filter may be used.

A dust rising prevention rib A17 is disposed at the upper entrance of the fine dust accommodating portion 16 from the downstream side of the dust suction path 25 to the upstream side of the flow path in a diagonally downward direction, and the dust rising prevention rib B22 is connected to the tip of the dust rising prevention rib A17. Even if the area formed by the gap 23 with the fine dust accommodating portion 16 is projected downward, it is arranged to face obliquely downward from the upstream side to the downstream side of the dust suction path 25 so as to cover the whole or at least a part thereof. ing. Further, the upstream front wall surface 24 of the fine dust container 16 is arranged upstream of the pleat-shaped peaks.

  The dust collecting case 3 is provided with an air passage 26 that allows the outside air to communicate with the fine dust separation chamber 12 in the vicinity of the upper upstream side of the filter 13, and an opening / closing means 21 that manually opens and closes the inlet 27 of the air passage 26. It is slidably provided. The opening / closing means 21 may be other means such as a lid member opening / closing type instead of a sliding type. Also, a mechanism that automatically opens and closes using a drive source such as a motor instead of manually may be used.

  Next, a perspective view of the filter 13 is shown in FIG. 3 (a), and a top view of the opening / closing means is shown in FIG. 3 (b).

  As shown in FIG. 3A, the frame 14 above the filter 13 is provided with a plurality of openings 20 that communicate with the intake surface on the upstream side of the filter 13. Each of the plurality of openings 20 has substantially the same shape as each of the valleys of the pleat shape, and in particular, opens only in the inner part of the valley of the pleats.

  When the filter 13 is mounted in the fine dust separation chamber 12, the plurality of openings 20 are configured to communicate with the air passage 26, so that outside air flows on the intake surface of the filter 13. At this time, as the number of passages of the air passages 26, there is a configuration in which one wide air passage 26 communicates with the plurality of openings 20, or there are a plurality of air passages independently communicated with the plurality of openings 20. A configuration of 26 is also possible. As an effect in the case of a plurality of ventilation paths 26, the diameter of the inlet 27 corresponding to each of the plurality of ventilation paths 26 can be arbitrarily changed, so it is desired to increase the flow rate of the outside air flowing through the intake surface of the filter 13. If there is a region, it can be realized by increasing the diameter of the entrance 27 of the air passage 26 through which the outside air flows.

  Further, as shown in FIG. 3B, the opening / closing means 21 is arranged so as to cover all the openings 20 of the filter 13 when closed.

  About the electric vacuum cleaner of this Embodiment 1 comprised as mentioned above, the operation | movement is demonstrated using FIG.1, FIG.4 (a) and FIG.4 (b).

  When the electric blower 2 starts operation, a suction airflow is generated, and dust from the floor surface is collected together with air through the suction tool 9, the extension pipe 8, the tip pipe 7, the hose 4, the connection pipe 5, and the suction port 6. It is sucked in.

  As shown in FIG. 4 (a), when the inlet 27 of the air passage 26 is closed by the opening / closing means 21, the dust sucked into the dust collecting case 3 is pebbled by the coarse dust filter 11 in the coarse dust separation chamber 10. Coarse dust 40 such as cotton dust is collected, and fine dust 41 such as sand dust passing through the coarse dust filter 11 is collected by the filter 13 of the fine dust separation chamber 12.

However, when the inlet 27 of the air passage 26 is opened by the opening / closing means 21 as shown in FIG. 4B, the fine dust 41 passing through the coarse filter 11 and adhering to the intake surface of the filter 13 is
It is transferred downward by the outside air flow 50 flowing on the intake surface from the opening 20 toward the lower side of the filter 13, and is guided into the fine dust container 16 along the inclination of the dust rising prevention rib A17 and the dust rising prevention rib B22. The At this time, even if the area formed by the gap 23 between the tip of the dust rising prevention rib A17 and the inner wall of the fine dust accommodating portion 16 is projected downward, the dust rising prevention rib B22 has a labyrinth shape that covers and covers this entire area. , Dust can be prevented from flying up.

  As described above, in the present embodiment, inflowing outside air from the opening 20 into the dust collecting case 3 while being sucked by the electric blower 2, fine dust 41 attached to the filter 13 by the outside air flow 50 is generated. In addition, the fine dust container 41 is provided with dust rising prevention means such as the dust rising prevention rib A17 and the dust rising prevention rib B22, so that the fine dust 41, which has been a problem in the conventional dust removal configuration, is removed from the dust. In contrast to the fact that the air does not flow up to the fine dust accommodating portion 16 by climbing on the anti-floating prevention rib A17 and the dust rising preventive rib B22 and not being transferred to the fine dust accommodating portion 16, the fine dust 41 is surely not raised to the fine dust accommodating portion 16. The suction force is not easily lowered even if a large amount of dust is sucked in, and a high suction work rate can be maintained for a long time. It is an implementation to provide a period maintenance-free vacuum cleaner.

  In addition, by providing an opening / closing means 21 for opening and closing the flow of outside air communicating with the opening 20, the flow of outside air to the opening 20 is closed and the dust on the filter 13 is removed when a suction force is required in normal cleaning. When desired, the user can freely select to open the flow of outside air to the opening 20.

  Further, the opening 20 is provided on the upper side with respect to the filter 13, the fine dust container 16 is provided on the lower side with respect to the filter 13, and the outside air flow 50 flowing in from the opening 20 extends downward from the upper part of the filter 13. By flowing, the inflow direction of the outside air flow 50 coincides with the direction of gravity, and the fine dust 41 is efficiently transferred to the fine dust container 16 with the assistance of gravity, and the contained fine dust 41 soars. Can be prevented.

  Further, the filter 13 is formed in a pleat shape, and the front wall surface 24 on the upstream side of the fine dust accommodating portion 16 is arranged with a gap on the upstream side of each of the pleat-shaped ridges. When the fine dust 41 adhering to the vicinity is transferred downward by the outside air flow 50, the fine dust 41 flows into the upstream side from the front wall surface 24 on the upstream side of the fine dust accommodating portion 16 and surely enters the fine dust accommodating portion 16 without rising up. Dust can be accommodated.

  In the present embodiment, the opening / closing means 21 for opening and closing the flow of the outside air to the opening 20 is provided above the upstream side of the filter 13, but the outside air to the opening 20 is located above the upstream side of the coarse dust filter 11. It goes without saying that the coarse dust 40 of the coarse dust filter 11 can be dropped by providing the opening / closing means 21 for opening and closing the flow of air and applying the external air flow 50 to the coarse dust 40 in the same manner.

  In this embodiment, the user opens / closes the opening / closing means manually. However, the opening / closing means is opened / closed every certain time, opened / closed by the suction air volume using the air volume detecting means, and dust is accumulated using the dust detecting means. Automatic opening / closing control such as opening / closing at the time may be performed.

  As described above, according to the present invention, the filter that separates and collects dust can be efficiently removed, so that it can be applied to uses such as household vacuum cleaners and large vacuum cleaners. .

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner body 2 Electric blower 3 Dust collection case 6 Suction port 11 Coarse dust filter 13 Filter 16 Fine dust accommodating part 17 Dust rising prevention rib A
20 Opening portion 21 Opening / closing means 22 Dust rising prevention rib B
23 Gap 24 Front wall 25 Dust suction path 26 Ventilation path 27 Entrance 40 Coarse dust 41 Fine dust 50 Ambient airflow

Claims (6)

An electric blower that emits suction air; a dust collection case that is installed upstream of the electric blower and introduces air containing dust sucked from the suction port by the electric blower; and a dust collection case that is disposed in the dust collection case A coarse dust separation chamber provided with a coarse dust filter for separating coarse dust, a fine dust separation chamber provided with a filter disposed on the downstream side of the coarse dust separation chamber in the dust collection case and separating fine dust; A fine dust container provided in the fine dust separation chamber in the dust collection case, a dust rising prevention means provided in the fine dust container, and a ventilation path that communicates the inside of the dust collection case with the outside air, An outside air inflow from the air passage into the dust collecting case is generated in a state of being sucked by the electric blower, fine dust attached to the filter is removed by the outside air flow, and fine dust is stored in the fine dust container. Without re-entrainment Vacuum cleaner that. 2. The dust rising part is provided with at least one dust rising preventing rib that narrows a gap at the entrance of the fine dust holding part and is inclined obliquely with respect to the direction of the outside air flow path as the dust rising prevention means. The vacuum cleaner described. The at least two dust rising prevention ribs are provided as dust rising prevention means, and one dust rising prevention rib is provided so as to block at least a part of a gap between the other dust rising prevention rib and the inner wall of the fine dust accommodating portion. The electric vacuum cleaner according to 1 or 2. The vacuum cleaner of any one of Claims 1-3 provided with the opening-closing means which opens and closes the entrance of a ventilation path. An opening is provided on the upper side of the filter so that the upstream side surface of the filter communicates with the air passage. The fine dust container is provided below the filter, and the outside air flow flowing from the opening is downward from the upper part of the filter. The electric vacuum cleaner according to any one of claims 1 to 4, wherein the electric vacuum cleaner is configured to flow along the line. The vacuum cleaner according to any one of claims 1 to 5, wherein the filter is configured in a pleat shape, and a front wall surface on the upstream side of the fine dust accommodating portion is disposed on the upstream side of each of the pleat-shaped peaks.