JP4444003B2 - Vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner used in general households.

A conventional vacuum cleaner is configured as shown in FIG. In FIG. 10, reference numeral 1 denotes a vacuum cleaner main body including an electric blower 2 for sucking dust, which can be connected to a suction tool for sucking dust. Reference numeral 3 denotes a dust collecting chamber body that is detachably provided on the main body 1 of the cleaner. A main filter 4 for collecting fine dust and a prefilter 5a for collecting coarse dust that is rotatably attached to the main filter 4 are provided. And a packing 6a for sealing between the vacuum cleaner body 1 and an intake port 7a for taking in dust from the suction tool.

When this vacuum cleaner is operated, the dust sucked from the suction tool enters the inside of the dust collecting chamber body 3 through the intake port 7a. Then, dust is first collected by the pre-filter 5a. Fine dust passes through the pre-filter 5a and is collected by the main filter 4 in the back. By repeating these processes, dust is accumulated in the dust collection chamber body 3 (for example, Patent Document 1).
JP 57-64027 A

  However, in the above conventional vacuum cleaner, the sucked dust is blown to the pre-filter 5a immediately after passing through the air inlet 7a, so that the dust is locally concentrated and the use of the filter area is adversely affected. There is a problem that the suction air volume is reduced early. In order to solve this problem, it is conceivable to increase the distance between the intake air sucked from the intake port 7a and the pre-filter 5a for filtering the intake air to disperse the suction air.

  The present invention has been made in view of the above points, and provides a vacuum cleaner that suppresses the concentration of dust on a local part of a filter and suppresses a reduction in suction air volume and improves dust collection performance. Is.

In order to solve the above-mentioned problems, the present invention provides a substantially cylindrical filter protruding from the electric blower inside the dust collection chamber body, and communicates with a hose connection portion on the side opposite to the electric blower to collect dust. An intake pipe extending to the lower side of the filter inside the chamber body is provided, an intake port is provided in the vicinity of the filter outer peripheral surface of the intake pipe, and a partition wall is provided between the filter and the intake pipe to provide a filter chamber and an intake pipe. Two chambers of the pipe chamber are divided into upper and lower parts, and the partition wall is provided with a cutout portion that allows the filter chamber and the intake pipe chamber to communicate with each other. The cutout portion includes the filter chamber and the intake pipe chamber. An opening / closing valve provided so as to communicate in the vicinity of the inner surface of the outer side of the outer side of the dust collecting chamber body and having an inverted angle of 90 degrees or less at the notch portion so as to incline in the outer direction of the dust collecting chamber body when opened. Provided, the notch And et enters by suction air containing dust, in which a structure for generating whirling airflow around the substantially cylindrical filter provided in the filter chamber.

  According to the above invention, the suction air from the connection port of the hose is supplied from the outer periphery of the filter, and the filter is configured in three dimensions. By the action of the suction air that enters, a swirling airflow is generated in the dust collection chamber with the filter as the axis. As a result, the suction air containing dust is swirled and dispersed in the dust collection chamber to prevent local dust adhesion. Moreover, the improvement of filter clogging leads to the improvement of ventilation performance and can suppress the reduction of the suction force in the vacuum cleaner.

  In the present invention, suction air containing dust can be swirled and dispersed in the dust collection chamber to prevent local dust adhesion, so that filter clogging is improved, ventilation performance is improved, and suction power in vacuum cleaners is reduced. Can be suppressed.

The invention according to claim 1 includes a main body incorporating an electric blower that generates suction air, and a dust collection chamber body for collecting dust that is detachably provided on the main body. It has a substantially cylindrical filter that protrudes from the electric blower side inside, and is opposite to the electric blower
An intake pipe that communicates with the hose connection portion of the surface and extends to the lower side of the filter inside the dust collecting chamber body, an intake port is provided near the filter outer peripheral surface of the intake pipe, and the filter and the intake pipe A partition wall is provided between the filter chamber and the intake pipe chamber so that the two chambers are configured vertically. The partition wall is provided with a notch for communicating the filter chamber and the intake pipe chamber. The notch portion is provided so that the filter chamber and the intake pipe chamber communicate with each other in the vicinity of the inner surface of the outer side of the dust collection chamber body, and the notch portion is inclined toward the outer direction of the dust collection chamber body when opened. An on- off valve with an inverted angle of 90 degrees or less is provided , and a swirling air flow around a substantially cylindrical filter provided in the filter chamber is generated by suction air containing dust that has entered from the notch. Yes, this Thus, the suction air from the connection port of the hose is supplied from the outer periphery of the filter, and the filter is configured in three dimensions, so that suction acts on the filter in multiple directions and the suction air entering the outer peripheral surface of the filter. Due to the function, a swirling airflow is generated around the filter. As a result, the suction air containing dust is swirled and dispersed in the dust collection chamber to prevent local dust adhesion. Moreover, the improvement of filter clogging leads to the improvement of ventilation performance and can suppress the reduction of the suction force in the vacuum cleaner. Further, the suction air generated by the electric blower communicates the filter chamber and the intake pipe chamber through the notch, and the suction air containing dust passes through the two chambers. The intake air drawn from the intake pipe is first relieved of pressure by the intake pipe chamber with a large internal volume, and the action of separating the specific gravity of the suction dust works to achieve suction to the dust collection chamber with priority on fine dust. Become. This delays the air volume deterioration of coarse dust that inefficiently closes the filter area, efficiently collects more dust, and can improve the performance of the dust collection capacity. In addition, the distance between the filter surface that generates the suction of the electric blower and the intake portion of the outside air suction air increases, and the rotational moment increases. This is a swirling suction air expansion, and suction air containing dust is more swirling and dispersed, and a reduction in suction force can be suppressed by improving ventilation performance by improving filter clogging. The on-off valve that operates at an inverted angle of 90 degrees or less by the suction air acting from the filter is a shielding plate that is inclined in the outer direction of the dust collecting chamber body, and the suction air entering from the notch is directly sucked into the filter. Instead, it is sucked in a form that bypasses the shielding plate. Therefore, the suction wind approach distance to the filter surface becomes longer, and in the airflow swirling around the filter, the swirling wind can be expanded by the rotation moment expanding action more than the above effect. Similarly, it is possible to impart the effect of diffusing dust contained in the suction air, further improve the clogging of the filter, and suppress the decrease in the suction performance of the ventilation performance. Furthermore, in the state where suction air is not generated, the on-off valve closes the notch that communicates the two chambers, the filter chamber and the intake pipe chamber, thereby preventing the backflow of dust accumulated in the dust collection chamber body. Dust spills can be prevented.

  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)
FIG. 1 is a cross-sectional view showing the overall configuration of the electric vacuum cleaner according to Embodiment 1 of the present invention, FIG. 2 is a perspective view of the dust collection chamber body, and FIG. 3 is an external view of a partition mounted on the opening of the dust collection chamber body. FIG.

  1 to 3, reference numeral 1 denotes a main body of a vacuum cleaner, which includes an electric blower 2 for generating suction air, a power cord 7, and a control means 8 for controlling the electric blower 2, and a handle 11 at an upper portion. In addition, a roller 12 which is a traveling part is provided in the lower rear part. 3 is a dust collection chamber body detachably provided on the main body, and includes an engaging portion 9 that engages with the front lower locking portion 4a of the main body 1 and a buckle 5 that fits into the concave portion 10 at the upper portion of the main body 1. Opposite to the handle 11 of the main body 1, it is provided on the convex portion 13 that can also obtain the handle effect, and is detachable. The dust collecting chamber body 3 is provided with a hose connecting portion 6 in front of the dust collecting chamber body 3 so that a hose 14 can be connected thereto. In this way, the vacuum cleaner is roughly divided into a main body 1 and a dust collection chamber body 3.

  Next, the details of the dust collecting structure which is the main focus of the present invention will be described.

  The dust collection chamber body 3 is formed in a substantially hemispherical shape, and is constituted by an outer surface 17 having an opening 16 as a surface facing when attached to the main body 1, and the opening 16 has a substantially plate shape, In addition, a partition wall 20 provided with a packing 18 around the entire circumference and a substantially cylindrical filter 19 at the center is detachably press fitted. Further, an intake pipe 22 is extended from the connecting portion 6 of the hose 14 to the lower side of the filter 19 in front of the dust collection chamber 3 facing the opening 16, and an intake port 21 is formed in the intake pipe 22. . The end opening of the intake pipe 22 is closed by coming into contact with a receiving portion 31 formed by a convex contour wall provided in the partition wall 20. The intake port 21 is formed on the back side so that the opening of the filter surface 23 does not face the filter surface 23. A sealing member 32 is interposed in a receiving portion 31 that is an abutting portion of the intake pipe 22 provided in the partition wall 20 to maintain airtightness. The cross-sectional shape of the intake pipe 22 is substantially circular to rectify the suction air.

  Next, the operation and action will be described. The intake pipe 22 is extended from the connection portion 6 of the hose 14, the intake port 21 is opened below the peripheral surface of the filter 19, and the opening is positioned on the back side so as not to face the filter surface 23. As a result, a linear suction path between the filter surface 23 and the air inlet 21 is not formed. As a result, a flow of suction air along the outer periphery of the filter surface 23 is generated, and a swirling air flow 24 is generated in the dust collection chamber 3 with the filter 19 as an axis. As a result, the suction air is swirled and dispersed in the dust collection chamber body 3, and the dust contained therein is also dispersed, so that local dust adhesion to the filter 19 is prevented. The improvement of the clogging of the filter surface 23 leads to the improvement of the ventilation performance, and the suction force reduction in the vacuum cleaner can be suppressed.

  Further, since the intake pipe 22 of the dust collection chamber 3 is formed in a substantially circular cross section, it is possible to reduce and mitigate the wind speed by the rectifying action of the suction air inside the intake pipe 22, and the intake pipe 22. The resistance is also relaxed with respect to the outer swirling air 25 and the deterioration of the swirling action is prevented, so that the stabilization of the effect can be achieved.

  Further, the tip of the intake pipe 22 extended from the connection portion 6 of the hose 14 is brought into contact with the receiving portion 31 formed by the convex contour wall of the partition wall 20, so that this becomes the tip support of the intake pipe 22, An improvement in deflection strength, which was a weak point of the cantilever structure by the extended configuration, can be achieved. This can improve the rigidity of the dust collecting chamber body 3 and can eliminate the reinforcing portion to the intake pipe 22, and can increase the dust collection capacity and reduce the uneven shape of the outer periphery of the intake pipe 22. It also prevents loss of swirl flow.

  Further, by interposing the sealing material 32, the air tightness at the contact portion at the tip of the intake pipe becomes perfect, and a reliable suction air flow along the suction path can be realized.

(Embodiment 2)
FIG. 4 is a cross-sectional view of a main part of the electric vacuum cleaner according to the second embodiment. In addition, the thing of the same code | symbol as Embodiment 1 has the same structure, The description is abbreviate | omitted.

  In FIG. 4, 33 is an on-off valve provided in the intake pipe 22 located inside the dust collection chamber body 3, and is attached so that the intake port 21 can be closed. The on-off valve 33 is attached to a shaft 34 provided on the intake pipe 21 so that a spring 35 is urged and the intake port 21 is closed.

Next, the operation and action will be described. In a state where no suction is generated, no airflow is generated in the intake pipe 22 and the suction port 21 is closed by the support of the pressing force due to the elastic effect of the spring 34. In a state where suction is generated, the on-off valve 33 is drawn toward the dust collecting chamber body and the intake port 21 is opened. As a result, when the operation of the electric blower 2 is stopped and the accumulated dust is treated, the on-off valve 33 closes the air inlet 21, and when the dust collecting chamber body 3 is removed from the main body, the dust collecting chamber body 3 The accumulated dust is prevented from entering the intake pipe 22 and is prevented from spilling to the outside through the connection portion 6 of the hose 14, so that the usability can be improved.

(Embodiment 3)
FIG. 5 is a cross-sectional view of a main part of the electric vacuum cleaner according to Embodiment 3 of the present invention. In addition, the thing of the same code | symbol as Embodiment 1 has the same structure, The description is abbreviate | omitted.

  The intake pipe 22 located inside the dust collection chamber body 3 is formed in a substantially cylindrical shape, but its inner diameter is configured to vary non-uniformly. Specifically, the inner diameter dimension A on the connecting portion 6 side of the hose 14 is larger than the inner diameter dimension B on the partition wall 20 side, and the inner diameter dimension is reduced in the so-called extending direction.

  Next, the operation and action will be described. The suction port 21 provided in the suction pipe 22 reduces the inner diameter dimension B in the vicinity thereof, so that the suction air in the vicinity of the suction port 21 increases in speed due to the reduction in the sectional area in the suction path. As a result, the dust contained in the suction air is prevented from adhering to the intake port, and a countermeasure against a failure due to clogging can be realized.

(Embodiment 4)
FIG. 6 is a cross-sectional view of a main part of the electric vacuum cleaner according to Embodiment 4 of the present invention. In addition, the thing of the same code | symbol as Embodiment 1 has the same structure, The description is abbreviate | omitted.

  The intake pipe 22 located inside the dust collection chamber body 3 is formed in a substantially cylindrical shape, but its inner diameter is configured to vary non-uniformly. Specifically, the inner diameter dimension A on the connecting portion 6 side of the hose 14 is made smaller than the inner diameter dimension B on the partition wall 20 side, contrary to the previous embodiment 3, and the inner diameter dimension is increased in the so-called extending direction. Is.

  Next, the operation and action will be described. The intake port 21 provided in the intake pipe 22 is formed near the tip of the intake pipe 22 that extends and expands the inner diameter dimension B, so that the sectional area in the suction path in the vicinity of the intake port 21 increases. It becomes. As a result, since the inner tube expands in accordance with the suction direction, clogging of sucked dust is reduced. Further, even if the user accidentally sucks coarse dust and causes the air intake pipe 22 to be clogged with dust, the clogging action does not work in removing the dust to the air intake port 21, and it can be easily removed and maintained. As a result, the usability can be improved.

(Embodiment 5)
FIG. 7 is a cross-sectional view of a main part of the electric vacuum cleaner according to Embodiment 5 of the present invention. In addition, the thing of the same code | symbol as Example 1 has the same structure, The description is abbreviate | omitted.

  The intake pipe 22 positioned inside the dust collection chamber body 3 is configured to be inclined downward from the hose connection portion 6 toward the electric blower 2 side.

  Next, the operation and action will be described. Dust that is sucked and introduced into the intake pipe 22 by the intake pipe 21 inclined and extended from the hose connection portion 6 of the dust collection chamber body 3 undergoes rolling and sliding action, and is a dust collection chamber that is a means for collecting dust. It will be introduced into the body 3. This is an auxiliary action for carrying dust when the amount of suction air in the dust collection chamber 3 is reduced during the dust collection saturation period, and dust collection efficiency can be improved.

(Embodiment 6)
FIG. 8 is a perspective view showing a dust collection chamber body of the electric vacuum cleaner according to Embodiment 6 of the present invention, and FIG. 9 is a perspective view of the dust collection chamber body viewed from the opening side. In addition, the thing of the same code | symbol as Embodiment 1 has the same structure, The description is abbreviate | omitted.

  8 and 9, the dust collection chamber body 3 is formed in a substantially hemispherical shape, and is constituted by an outer surface having an opening 16 as a surface facing when attached to the main body 1. A partition wall 20 provided with a cylindrical filter 19 is detachably press-fit. An intake pipe 22 is extended from the connecting portion 6 of the hose 14 facing the lower side of the substantially cylindrical filter 19 so as to provide an intake port 21 and is in contact with the partition wall 20. Further, a partition wall 41 is formed between the filter 19 and the intake pipe 22 so as to constitute two chambers of a filter chamber 48 and an intake pipe chamber 49, and a cutout portion 42 is provided in the partition wall 41. ing. The notch 42 is formed so as to communicate with the inner surface of the outer side of the dust collection chamber 3. The notch 42 is provided with an open / close valve 43 that opens and closes depending on the presence or absence of suction air. The on-off valve 43 closes the notch 42 provided on the partition wall 41 and is attached to a shaft 45 provided on the partition wall 41. Further, the spring 47 is urged to the shaft 45, and the inverted angle is configured such that the wind from the notch 42 does not flow directly to the filter side, for example, 90 degrees or less.

  Next, the operation and action will be described. A partition wall 41 is formed between the filter 19 and the intake pipe 22, and a notch 42 is provided in the partition wall 41, so that the suction air 51 generated by the electric blower 2 is sucked into the intake pipe chamber 49 and the filter chamber. It will be via 48 2 rooms. As its action, the suction air 51 including dust is first sucked from the intake pipe 22, and in the intake pipe chamber 49 serving as the first chamber, the air flow is diffused by the action of the pressure change due to the expansion of the pipe internal volume. In the filter chamber 48 which is the second chamber, dust is collected by turning into a more swirling airflow. The diffusion of the air current causes the specific gravity of the suction dust to be separated, and suction to the dust collection chamber body 3 giving priority to fine dust having a light specific gravity can be achieved. This delays the attachment of coarse dust that tends to close the filter surface 23, achieves early prevention of air flow deterioration, and efficiently collects more dust. As a result, the dust collection capacity can be improved.

  Further, the cutout portion 42 is formed so that the outer surface of the dust collecting chamber body 3 serves as a communication port, so that the distance of the suction air 51 to the filter surface 23 is long, and the filter 19 is centered. As for the swirling airflow, the expanding action of the rotating moment works, and the swirling wind can be expanded. This gives the effect of diffusing the dust contained in the suction air 51, further improves the clogging of the filter 19, and the improvement of the air permeability suppresses the reduction of the suction force.

  In addition, by providing an opening / closing valve 43 that opens and closes according to the presence or absence of suction air in the cutout portion 42, the backflow of dust accumulated in the dust collecting chamber body 3 is prevented in a state where the suction air 51 is not generated. Will be able to do. The on-off valve 43 operating at an inverted angle of 90 degrees or less by the suction air acting from the filter surface 23 is a shielding plate formed between the notch portion 42 and the filter 19. Accordingly, the suction air entering from the cutout portion 42 is not directly sucked into the filter 19 but collides with the shielding on-off valve 43 to detour, and the distance to the filter surface 23 is further extended. Become. In the airflow swirling around the filter, the swirling wind can be expanded by the rotation moment expanding action exceeding the above effect. Since these give the effect of diffusing dust contained in the suction air, it is possible to further improve the clogging of the filter surface 23 and suppress the reduction in the suction performance of the ventilation performance.

In each of the above embodiments, the intake pipe 21 is illustrated as extending from the connection port 6 of the hose. However, the intake pipe 21 extends from the partition wall 20 and is in contact with the connection port 6 of the hose, or The dust collecting chamber body 3 or the partition wall 20 may be formed separately and sandwiched between them.

  The on-off valve 33 provided on the intake port 21 or the on-off valve 43 provided on the notch 42 may itself be formed of a soft material such as elastic rubber, and if formed of such a soft material, The opening / closing operation of the opening / closing valve can be obtained by the bending action of the soft material without forming the shaft and the holding portion in the opening / closing structure, and the parts and cost can be reduced by simplifying the mechanical configuration.

  As described above, the vacuum cleaner according to the present invention suppresses the local adhesion of dust to the filter, thereby suppressing the reduction of the suction force, improving the usability and the dust collection performance, and for household or commercial use. Suitable for vacuum cleaner.

Sectional drawing which shows the whole structure of the vacuum cleaner in Embodiment 1 of this invention. Perspective view of the dust collection chamber External view of the bulkhead Main part sectional drawing of the electric vacuum cleaner in Embodiment 2 Sectional drawing of the principal part of the electric vacuum cleaner in Embodiment 3 Sectional drawing of the principal part of the vacuum cleaner in Embodiment 4 Sectional drawing of the principal part of the same Embodiment 5 electric vacuum cleaner The perspective view which shows the dust collection chamber body of the vacuum cleaner in the same Embodiment 6 Perspective view seen from the opening side of the dust collection chamber Cross-sectional view of a conventional vacuum cleaner

DESCRIPTION OF SYMBOLS 1 Main body 2 Electric blower 3 Dust collection chamber body 6 Connection part 14 Hose 16 Opening part 17 Outer surface 18 Packing 19 Filter 20 Bulkhead 21 Intake port 22 Intake pipe 23 Filter surface 31 Receiving part 32 Sealing material

Claims (1)

A main body including an electric blower for generating suction air and a dust collection chamber body for collecting dust that is detachably provided on the main body, the dust collection chamber body projecting from the electric blower side inside the dust collection chamber body An intake pipe having a substantially cylindrical filter and communicating with a hose connecting portion on the side opposite to the electric blower and extending to the lower side of the filter inside the dust collecting chamber body; and an outer periphery of the filter of the intake pipe An air inlet is provided in the vicinity of the surface, and a partition wall is provided between the filter and the intake pipe to divide the filter chamber and the intake pipe chamber into two upper and lower chambers, and the partition wall includes the filter chamber and the filter chamber. A notch for communicating with the intake pipe chamber is provided, and the notch is provided so as to allow the filter chamber and the intake pipe chamber to communicate with each other in the vicinity of the inner surface of the outer side of the dust collection chamber body . When the book was opened Inverted angle to be inclined in the outer direction of the chamber body provided the following off valve 90, enters from the notch, the suction air containing dust, and about a generally cylindrical filter provided in the filter chamber A vacuum cleaner configured to generate a swirling airflow .

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