JP2004113274A - Electric vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem of a vacuum cleaner that a dust collection chamber with a larger capacity is hardly used effectively since dust adhering to a filter blocks a suction opening of an electric fan and increases duct resistance. <P>SOLUTION: The vacuum cleaner is constituted to have filters 30, 31 placed in parallel with a straight line extending from an inflow opening 28 toward an outflow opening 39 in the dust collection chamber 23 and to divide the dust collection chamber 23 into an influx side chamber 34 and an outflow side chamber 36 by the filters 30, 31 and partitioning boards 32, 33. Because of the structure, since the dust is attached to the filters 30, 31 gradually from the side of the outflow opening 39, the filters 30, 31 hardly get clogged until the inflow side chamber 34 and an intermediate dust collection chamber 35 are filled with the dust, and no electric fan 22 with a larger outer shape and a high suction pressure is required. As a result, the electric vacuum cleaner which is lightweight and slender and shows excellent operability and storage performance is provided. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a vacuum cleaner used in a general home or the like.
[0002]
[Prior art]
A conventional vacuum cleaner has a dust collecting chamber for accommodating a filter below an electric blower built in a cleaner body, and further has a suction tool below the dust collecting chamber (for example, see Patent Document 1). 1).
[0003]
[Patent Document 1]
JP 2000-189351 A
[Problems to be solved by the invention]
However, in the above-described conventional configuration, the filter is disposed in a direction perpendicular to the airflow flowing from the suction tool to the electric blower through the dust collection chamber, and the sucked dust is concentrated near the electric blower of the filter. Will adhere. For this reason, even if the volume of the dust collection chamber is increased, dust adhering to the filter blocks the suction port of the electric blower, and the volume of the dust collection chamber cannot be used effectively. If an electric blower having a high suction pressure is used to solve this problem, the mass and the diameter of the electric blower are increased, and the mass and the size of the main body of the vacuum cleaner are increased. In addition, even if the area of the filter is increased, the size of the main body of the cleaner is increased. As a result, the operation of the vacuum cleaner main body on the floor surface, use by lifting, transportation, and the like cannot be improved, and further, there is a problem that it is difficult to insert the cleaner body into a small gap for cleaning and storage.
[0005]
The present invention solves the above-mentioned conventional technology, and a vacuum cleaner in which a filter is less likely to be clogged, maintains high dust collection performance, and has a thin and slim dust collection chamber, and has improved operability and storage. The purpose is to provide.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems, an electric vacuum cleaner according to the present invention includes an electric blower built in a cleaner main body, a dust collecting chamber disposed below and upstream of the electric blower, and a lower part of the dust collecting chamber. And it has a suction tool arranged on the upstream side, the inflow port and the outflow port provided in the dust collection chamber are located on the same line, and disposed in the dust collection chamber in parallel with a straight line from the inflow port to the outflow port. A filter is provided, and the dust collection chamber is divided into an inflow side chamber and an outflow side chamber by the filter and the partition plate.
[0007]
As a result, the dust sucked from the suction tool gradually adheres from the outlet side of the filter due to the inertial force, so that the filter is unlikely to be clogged until the dust is filled in the inflow side chamber, and the airflow path is always secured. Therefore, an increase in pressure loss is prevented. As a result, a sufficient suction force can be obtained without using an electric blower having a large diameter and a high suction pressure, so that the operability and the storability are improved while being lightweight and slender.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention described in claim 1 includes an electric blower built in the cleaner body, a dust collecting chamber arranged below and upstream of the electric blower, and a suction tool arranged below and upstream of the dust collecting chamber. The inflow port and the outflow port provided in the dust collection chamber are located on the same line, and a filter arranged in parallel to a straight line from the inflow port to the outflow port is provided in the dust collection chamber, and the filter and the partition plate are provided. Thereby, the dust collection chamber is divided into an inflow side chamber and an outflow side chamber. Due to this, the dust sucked from the suction tool gradually adheres from the outlet side of the filter due to inertial force, so that the filter is unlikely to be clogged until the dust is filled in the inflow side chamber, and the airflow path is always secured. This prevents an increase in wind path resistance. Therefore, a sufficient suction force can be obtained without using an electric blower having a large diameter and a high suction pressure, thereby realizing a vacuum cleaner that is lightweight, slender, and has improved operability and storage.
[0009]
According to the invention described in claim 2, the cross-sectional area of the passage in the direction perpendicular to the filter in the outlet side chamber beside the filter described in claim 1 is provided so as to increase toward the outlet. Since the airflow that has flowed in from the inlet passes through the filter while being deviated toward the outlet of the inflow-side chamber, the sucked dust adheres in order from the outlet of the filter. As a result, the volume of the inflow-side chamber of the dust collection chamber can be more effectively used, and the amount of dust collected can be increased.
[0010]
In the invention described in claim 3, the dust collection chamber described in claim 1 or 2 is particularly divided into an inflow-side chamber and an outflow-side chamber by a plurality of filters and a partition plate. One or more intermediate dust collecting chambers are provided between the outlet side chamber and the outlet side chamber. As a result, dust having a large volume or surface area is accumulated in the upstream filter and small dust is accumulated in the downstream filter, so that a filter suitable for the size of the dust can be provided, and the filter is not easily clogged. It can be a dust collection chamber.
[0011]
The invention described in claim 4 is particularly configured such that the inlet chamber and one or more intermediate dust collecting chambers described in claim 3 each have a larger volume in the upstream chamber than in the downstream chamber. . As a result, dust having a large volume or surface area is accumulated in the upstream filter, and small dust is accumulated in the downstream filter.Therefore, it is possible to have a filter and a dust collection chamber volume suitable for the size and amount of dust, As a whole, it is possible to provide a dust collection chamber which is small and in which the filter is not easily clogged.
[0012]
The invention described in claim 5 is configured such that the inflow-side chamber described in any one of claims 1 to 4 is arranged on the front surface of the main body. This allows the dust collected in the dust collection chamber to be caught by the filter before operating the electric blower with the body turned obliquely and turning on the switch before use, or when the electric blower is stopped. Can be prevented from falling. As a result, it is possible to prevent the lump of dust from moving up and down in the dust collection chamber, prevent clogging of the filter, and maintain high suction performance without obstructing the flow of air current.
[0013]
The invention described in claim 6 is particularly configured such that the inflow-side chamber described in any one of claims 1 to 4 is disposed on a rear surface of the main body. As a result, when the main body is inclined at the time of use, the sucked dust moves on the wall surface separated from the filter of the inflow side chamber by the action of gravity and adheres to the filter from the outflow side, so that the volume of the inflow side chamber of the dust collection chamber is reduced. It can be used more effectively and the amount of collected dust can be increased.
[0014]
According to a seventh aspect of the present invention, the filter facing the inflow-side chamber according to any one of the first to sixth aspects is made of a conductive material. As a result, even if dust moves while rubbing the filter, static electricity is unlikely to be generated, and the generated static electricity is transmitted through the entire filter and discharged into the air, so that dust can be prevented from adhering to the wall surface of the inflow-side chamber. .
[0015]
According to an eighth aspect of the present invention, a storage portion is provided near the inflow port of the inflow-side chamber according to any one of the first to seventh aspects. Thus, when large-sized debris such as clips, coins, and pebbles are sucked into the storage unit, the debris does not move frequently in the dust collection chamber, and is compressed into a lump. Large dust does not collide with the dust and diffuse into the dust collection chamber. Further, there is no possibility of collision and damage to a wall surface or a filter in the dust collection chamber, and noise at the time of collision can be reduced.
[0016]
According to a ninth aspect of the present invention, in particular, a buffer is provided on the inner wall on the inflow side chamber side of the partition plate located on the downstream side according to any one of the first to eighth aspects. Accordingly, large-mass dust or hard dust is sucked in, and even if it collides with the partition plate near the outflow port due to the inertial force, there is no possibility of breakage and noise can be further reduced.
[0017]
In the invention according to claim 10, since the bent passage is provided between the inflow port and the dust collection chamber according to any one of claims 1 to 9, it is accumulated when the operation of the main body is stopped. Even if the dust falls to the inlet side, the dust does not easily leak from the suction tool, and does not require a check valve or the like.
[0018]
The invention described in claim 11 is, in particular, divided into an inflow side chamber and an outflow side chamber by a filter and a partition plate arranged parallel to a straight line from the inflow port to the outflow port according to any one of claims 1 to 10. Since a plurality of dust collection chambers are arranged in series between the suction tool and the electric blower, a filter suitable for the size of dust and a dust collection volume can be provided, and the It is possible to make the dust collecting chamber hard to clog.
[0019]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
(Example 1)
FIG. 1 is a longitudinal sectional view of a main part of a vacuum cleaner according to a first embodiment of the present invention, and FIG. 2 is a partially sectional side view showing a use state of the vacuum cleaner. 3 (a) to 3 (c) are longitudinal sectional views showing a dust accumulation state of the dust collecting chamber of the vacuum cleaner, and FIG. 4 is a longitudinal sectional view showing a function of a housing of the dust collecting chamber. It is.
[0021]
1 to 4, reference numeral 21 denotes a cleaner main body (hereinafter, referred to as a main body), and reference numeral 22 denotes an electric blower built in the main body 21. Reference numeral 23 denotes a dust collection chamber disposed below and upstream of the electric blower 22. Reference numeral 24 denotes a floor nozzle which is a suction tool disposed below and upstream of the dust collection chamber 23, and has an opening 25 below. A rotary brush 26 rotated by a motor (not shown) is arranged inside the floor nozzle 24. Reference numeral 27 denotes a connection pipe provided between the floor nozzle 24 and an inflow port 28 substantially below the dust collection chamber 23. A check valve 29 made of rubber or an elastomer resin is provided in the connection pipe 27, and opens to the downstream side only when a suction force is generated.
[0022]
The dust collecting chamber 23 is divided into three parts by a first-stage filter 30, a second-stage filter 31, and partition plates 32 and 33. That is, an inflow side chamber 34 located on the front and upstream side of the main body 21, an intermediate dust collection chamber 35 sandwiched between the front-stage filter 30 and the rear-stage filter 31, and an outflow side chamber 36 located on the rear side and downstream of the main body 21. At this time, the first-stage filter 30 and the second-stage filter 31 are held by filter frames 37 and 38, respectively, and are arranged substantially in parallel with a straight line extending from the inflow port 28 to the outflow port 39 substantially at the center above the dust collection chamber 23. The inflow-side chamber 34 has a larger volume than the intermediate dust collection chamber 35. Further, the former-stage filter 30 and the latter-stage filter 31 are fine meshes (several tens μm to several hundred μm), and the latter-stage filter 31 is finer than the former-stage filter 30.
[0023]
Reference numeral 40 denotes an inclined portion provided in the outflow-side chamber 36, and the outflow-side chamber 36 has such a shape that the cross-sectional area of the passage increases from the inflow port 28 to the outflow port 39 due to the inclined portion 40. Reference numeral 41 denotes a storage portion provided on the outer periphery of the inflow port 28. A buffer 42 such as rubber or urethane foam is provided on the lower surface of the partition plate 33, that is, on the inner wall of the inflow-side chamber 34. Reference numeral 43 denotes a holding unit such as urethane foam for holding the electric blower 22, which absorbs vibration and noise of the electric blower 22. Reference numeral 44 denotes a lattice portion provided between the electric blower 22 and the outlet 39, which prevents foreign matter from entering the electric blower 22 when a filter or the like is damaged. Reference numeral 51 denotes a handle provided at the uppermost end of the main body 21.
[0024]
Hereinafter, the operation of the present embodiment based on the above configuration will be described. When the user holds the handle portion 51, places the opening 25 of the floor nozzle 24 on the cleaning surface, and turns on a switch (not shown) provided on the handle portion 51, the electric blower 22 operates to generate a suction force. Subsequently, the rotating brush 26 is rotated by the motor in the floor nozzle to scoop up dust on the cleaning surface. Ambient air is sucked by the generated suction force (arrow A), and dust on the cleaning surface is sucked into the floor nozzle 24 (arrow B). At this time, the check valve 29 is opened by the suction force, and the sucked dust passes through the connection pipe 27 (arrow C) and is conveyed to the inflow side chamber 34 in the dust collection chamber 23. Here, since the outflow side chamber 36 has a passage shape which expands from the inflow port 28 side to the outflow port 39 side by the inclined portion 40, the airflow is large on the outflow port side of the pre-filter 30 having a large passage area and low airflow resistance. Even if the air flow is directed to the pre-stage filter 30 by the inertia force of the dust itself, the dust proceeds to the outlet 39 side (arrows D and E). The air that has been cleaned by passing through the pre-stage filter 30 and the post-stage filter 31 passes through the outlet 39 and the grid portion 44 and is sucked into the electric blower 22 (arrow F). Thereafter, the air discharged from the electric blower 22 is discharged to the outside through an exhaust port (not shown) provided in the main body 21.
[0025]
Next, the manner in which dust accumulates in the dust collection chamber 23 will be described in more detail with reference to FIGS. First, at the initial stage of suction (FIG. 3A), as described above, dust accumulates from the vicinity of the pre-filter 30 and the partition plate 33 on the outlet 39 side of the inflow-side chamber 34 due to the bias of airflow and the inertial force. At this time, some large dust 45 adheres to the front filter 30, and the remaining small dust 46 passes through the front filter 30 and moves to the intermediate dust collection chamber 35. Dust 46 also moves in the intermediate dust collection chamber 35 in the same manner as in the inflow side chamber 34, and accumulates from the vicinity of the rear filter 31 and the partition plate 33 on the outlet 39 side of the intermediate dust collection chamber 35. The post-stage filter 31 is fine and adheres the remaining small dust 46, and the purified air passes through the outflow side chamber 36.
[0026]
When dust is subsequently sucked (FIG. 3B), only large dust 45 accumulates in the inflow-side chamber 34 in order, and the remaining small dust 46 passes through the large dust 45 and the pre-filter 30 to the intermediate dust collection chamber 35. accumulate. Finally (FIG. 3 (c)), the inflow side chamber 34 and the intermediate dust collection chamber 35 are filled with dust 45 and 46.
[0027]
Part of the dust contacts the inner wall of the dust collection chamber 23 and the filters 30 and 31 to generate static electricity. However, since the filters 30 and 31 are made of a wire net made of a conductive material, the static electricity is hardly generated and generated. The static electricity also travels through the filters 30 and 31 and is discharged into the air, so that dust can be prevented from adhering to the wall surface of the inflow-side chamber 34. Even if the switch is turned off and the electric blower 22 is stopped, the dust which has been compressed and clumps is caught by the eyes of the filters 30 and 31 and is fixed there.
[0028]
Next, a state in which large-sized dust or hard dust such as clips, coins, and pebbles are sucked will be described with reference to FIG. The large mass of dust 47 sucked from the floor nozzle 24 has a large inertial force and collides with the partition plate 33 without adhering to the pre-filter 30 (arrow G). Here, since the partition plate 33 is provided with a buffer 42 such as rubber, foamed urethane, or sponge, the speed at which dust rebounds is reduced, and at the same time, the partition plate 33 is protected and the collision noise is reduced. Although the rejected dust 47 returns toward the inflow port 28, it is stored in the storage portion 41 provided on the outer periphery of the inflow port 28 and is not sucked again (arrow H).
[0029]
By using the vacuum cleaner of this embodiment in this way, the dust sucked from the floor nozzle 24 gradually adheres from the outlet 39 side of the filters 30 and 31 due to the inertial force. The filter 30 is unlikely to be clogged until the air flow becomes full, and the passage of the airflow is always secured, thereby preventing an increase in the airflow resistance. Therefore, a sufficient suction force can be obtained without using an electric blower having a large diameter and a high suction pressure, thereby realizing a vacuum cleaner that is lightweight, slender, and has improved operability and storage.
[0030]
Further, the outflow side chamber 36 of the dust collection chamber 23 has an inclined portion 40 and has a passage shape that expands from the inflow port 28 side to the outflow port 39 side. The dust that has passed through the filter 30 with a bias toward the 39 side adheres sequentially from the outlet side of the filter 30. As a result, the volume of the inflow-side chamber 34 of the dust collection chamber 23 can be more effectively used, and the amount of collected dust can be increased.
[0031]
Further, the dust collection chamber 23 is divided into an inflow side chamber 34, an intermediate dust collection chamber 35, and an outflow side chamber 36 by two filters 30 and 31, and the inflow side chamber 34 and the intermediate dust collection chamber 35 have a larger volume on the upstream side. It has the composition which has. As a result, dust having a large volume or surface area is accumulated in the upstream filter 30 and small dust is accumulated in the downstream filter 31. Therefore, it is possible to have a filter and a dust collection chamber volume suitable for the size and amount of dust. This makes it possible to provide a dust collection chamber that is small as a whole and hardly clogs the filter.
[0032]
Further, since the inflow side chamber 34 is configured to be disposed on the front surface of the main body 21, the main blower 21 is inclined at the time of use, before the electric blower 22 is operated by turning on the switch, or when the electric blower 22 is stopped by turning off the switch, The dust collected in the dust collection chamber 23 is prevented from being caught by the filter 30 and falling to the inflow port 28. As a result, it is possible to prevent the dust lump from moving up and down in the dust collection chamber, prevent the filters 30 and 31 from being clogged, and maintain a high suction performance without obstructing the flow of air current.
[0033]
In addition, since the filter 30 facing the inflow-side chamber 34 is made of a wire mesh made of a conductive material, even if dust moves while rubbing the filter 30, it is difficult for static electricity to be generated, and the generated static electricity also travels through the entire filter 30 and enters the air. The discharge can prevent dust from adhering to the wall surface of the inflow-side chamber 34.
[0034]
The discharge effect can be enhanced by grounding the filters 30 and 31, which are conductive materials, to the dust collecting chamber 23 or the metal part of the main body 21.
[0035]
A housing portion 41 is provided on the outer periphery of the inflow port 28 of the inflow-side chamber 34. When the large-sized dust 47 is sucked in this way, it falls into the storage portion 41 and the large-sized dust 47 does not frequently move in the dust collection chamber 30, so that the dust that is compressed and The large dust 47 does not collide and diffuse into the dust collection chamber 23. Furthermore, there is no possibility of colliding with the wall surface in the dust collection chamber 23 or the filter 30 to be damaged, and noise at the time of collision is reduced.
[0036]
In addition, since the buffer 42 is arranged on the partition plate 33 located on the inner wall of the inflow-side chamber 34, large-mass dust 47 and hard dust are sucked in and collide with the partition plate 33 near the outlet 39 by inertia force. However, there is no risk of damage, and noise is further reduced.
[0037]
In the present embodiment, the inflow port 28 and the outflow port 39 are provided substantially at the lower upstream side substantially at the center and the upper downstream side substantially at the center of the dust collection chamber 23, respectively. There is no problem even if it is provided.
[0038]
(Example 2)
FIG. 5 is a plan sectional view of a dust collecting chamber of a vacuum cleaner according to a second embodiment of the present invention. The configuration other than the cross-sectional shapes of the first-stage filter 30 and the second-stage filter 31 is the same as that of the first embodiment, and thus the same reference numerals are given to the same portions, and detailed description thereof will be omitted.
[0039]
In FIG. 5, the first-stage filter 30 and the second-stage filter 31 are curved toward the outflow-side chamber 36, and the airflow flows in the direction of the arrow J. As a result, the filter area can be increased as compared with the flat filter, and the rigidity can be further increased and high strength can be obtained.
[0040]
It should be noted that the same effect can be obtained not only in a curved shape but also in a shape obtained by combining flat surfaces or in a wavy shape.
[0041]
(Example 3)
FIG. 6 is a vertical sectional view of a main part of a vacuum cleaner according to a third embodiment of the present invention. Except for the configuration related to the front and rear of the dust collection chamber 23, the configuration is the same as that of the first embodiment.
[0042]
In FIG. 6, in the dust collection chamber 23, an inflow-side chamber 34 is arranged on the rear surface of the main body 21. When the main body 21 is inclined at the time of use in this way, the sucked dust moves on the wall surface of the inflow side chamber 34 away from the pre-stage filter 30 and adheres to the pre-stage filter 30 from the outlet 39 side (arrow K). As a result, the volume of the inflow-side chamber 34 of the dust collection chamber 23 can be more effectively used, and the amount of collected dust can be increased.
[0043]
(Example 4)
FIG. 7 is a vertical sectional view of a main part around a dust collecting chamber and an inflow port of a vacuum cleaner according to a fourth embodiment of the present invention. Since the configuration other than the vicinity of the inflow port 28 is the same as that of the first embodiment, the same portions are denoted by the same reference numerals and detailed description thereof will be omitted.
[0044]
In FIG. 7, a bent passage 61 is provided between the inflow port 28 and the dust collection chamber 23, and the dust passes in the direction of arrow L. Therefore, even when the main body 21 is not operated, even if the dust 64 is collected and falls to the inlet side 28 without the check valve, the dust 64 leaks from the floor nozzle 24 because it is blocked by the passage partition 62 and the projection 63. Therefore, a simple configuration can be achieved.
[0045]
(Example 5)
FIG. 8 is a longitudinal sectional view of a main part of a vacuum cleaner according to a fifth embodiment of the present invention. Since the configuration other than the dust collection chamber 23 is the same as that of the first embodiment, the same portions are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0046]
In FIG. 8, the dust collection chamber 23 includes an inflow side chamber 34, a filter 30, a filter frame 37, an outflow side chamber 36, which constitutes a lower dust collection chamber, an inclined portion 40, partition plates 32 and 33, and an inflow side chamber 71 which constitutes an upper stage. , A filter 31, a filter frame 38, an outflow-side chamber 72, an inclined portion 73, and partition plates 74 and 75, which are arranged in series in upper and lower stages. At this time, the airflow flows in the order of arrow M, arrow N, and arrow P. For this reason, it is possible to have a filter and a dust collecting volume suitable for the size of the dust, and the dust collecting chamber 23 in which the body 21 is slender and the filters 30 and 31 are hardly clogged.
[0047]
【The invention's effect】
As described above, according to the first to eleventh aspects of the present invention, it is possible to realize a vertical vacuum cleaner that is lightweight, slender, and has improved operability and storage.
[Brief description of the drawings]
FIG. 1 is a vertical sectional view of a main part of a vacuum cleaner according to a first embodiment of the present invention. FIG. 2 is a partial cross-sectional side view showing a use state of the vacuum cleaner. A vertical sectional view showing an initial dust accumulation state in the dust collection chamber (b) A vertical sectional view showing a dust accumulation state in use in the dust collection chamber (c) A vertical cross section showing a final dust accumulation state in the dust collection chamber FIG. 4 is a longitudinal sectional view showing the function of a storage section of the dust collecting chamber. FIG. 5 is a plan sectional view of a dust collecting chamber of a vacuum cleaner according to a second embodiment of the present invention. FIG. 6 is an embodiment of the present invention. FIG. 7 is a vertical cross-sectional view of a main part of the vacuum cleaner in FIG. 3; FIG. 7 is a vertical cross-sectional view of a main part around a dust collection chamber and an inlet in the vacuum cleaner according to a fourth embodiment of the present invention; Longitudinal sectional view of main part of vacuum cleaner
21 body (vacuum cleaner body)
22 electric blower 23 dust collection chamber 24 floor nozzle (suction tool)
28 Inlet 30, 31 Filter 32, 33, 74, 75 Partition plate 34, 71 Inlet side chamber 35 Intermediate dust collecting chamber 36, 72 Outlet side chamber 39 Outlet 40, 73 Inclined section 41 Storage section 42 Buffer 47 Large refuse 61 Bent passage

Claims (11)

An electric blower built into the cleaner body, a dust collecting chamber disposed below and upstream of the electric blower, and a suction tool disposed below and upstream of the dust collecting chamber, provided in the dust collecting chamber. The inflow port and the outflow port are located on the same line, and a filter arranged in parallel with a straight line from the inflow port to the outflow port is provided in the dust collection chamber. Vacuum cleaner configured to be divided into outflow side chamber. The vacuum cleaner according to claim 1, wherein a cross-sectional area of the passage in a direction perpendicular to the filter in the outlet-side chamber beside the filter is increased toward the outlet. The dust collection chamber is divided into an inflow side chamber and an outflow side chamber by a plurality of filters and a partition plate, and one or more intermediate dust collection chambers are provided between the inflow side chamber and the outflow side chamber by the plurality of filters. The vacuum cleaner according to claim 1. The vacuum cleaner according to claim 3, wherein each of the inflow-side chamber and the one or more intermediate dust collection chambers has a configuration in which the upstream chamber has a larger volume than the downstream chamber. The vacuum cleaner according to any one of claims 1 to 4, wherein the inflow-side chamber is disposed on a front surface of the main body. The vacuum cleaner according to any one of claims 1 to 4, wherein the inflow-side chamber is disposed on a rear surface of the main body. The vacuum cleaner according to any one of claims 1 to 6, wherein the filter facing the inflow side chamber is made of a conductive material. The vacuum cleaner according to any one of claims 1 to 7, further comprising a housing portion near the inflow port of the inflow-side chamber, into which large-mass dust enters. The vacuum cleaner according to any one of claims 1 to 8, wherein a buffer is disposed on an inner wall on the inflow side chamber side of the partition plate located on the downstream side. The vacuum cleaner according to any one of claims 1 to 9, wherein a bent passage is provided between the inflow port and the dust collection chamber. A plurality of dust collection chambers divided into an inflow side chamber and an outflow side chamber by a filter and a partition arranged in parallel to a straight line from an inflow port to an outflow port, and a plurality of the dust collection chambers are arranged in series between the suction tool and the electric blower. The vacuum cleaner according to any one of 1 to 10.

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