JP2013052007A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner that reduces clogging of a coarse dust filter.SOLUTION: The vacuum cleaner includes: a dust collection box 4; a guide pipe 11 located in an inlet port 10 of the dust collection box 4 and for guiding air flow; and the coarse dust filter 8 for catching sucked coarse dust. An air flow regulation pipe 12 for regulating air flow guided by the guide pipe 11 is detachably provided on the guide pipe 11, allowing acceleration of flow velocity of a suction air flow and replacement of other air flow regulation pipe which is easier to generate turbulence. Accordingly, air flow from the guide pipe 11 can be regulated in a plurality of patterns. As a result, clogging prevention of the coarse dust filter 8 can be effected even when the vacuum cleaner is used under the various environments.

Description

  The present invention relates to a vacuum cleaner, and more particularly to a dust collection box for a vacuum cleaner.

  A conventional dust collection box of a vacuum cleaner has a substantially cylindrical centrifuge chamber, and a configuration in which a coarse dust filter and a fine dust filter are disposed on the downstream side thereof has been the mainstream. However, the dust collection box having such a configuration has a problem that the pressure loss is large and it is difficult to improve the suction force.

  Against this background, in recent years, the coarse dust filter and the fine dust filter are linearly arranged at the position facing the intake port of the dust collection box, and the suction power is improved by reducing the pressure loss of the dust collection box as much as possible. In this type, various devices have been devised in order to reduce the early clogging of the coarse dust filter.For example, a guide pipe that guides the suction airflow provided at the intake port of the dust collection box is used. A plurality of integrally formed extending parts and a wind receiving part are provided on the coarse dust filter to disperse a part of the air flow sucked from the intake port from between the extending parts, and the remaining air flow is sent to the wind receiving part. Some are designed to reduce clogging of the coarse dust filter and secure the dust collection capacity by dispersing the contact vertically and horizontally and generating turbulent flow in the dust collection box (see, for example, Patent Document 1). .

JP 2008-22932 A

  However, in the configuration of the conventional electric blower as described in Patent Document 1, the shape of the guide pipe is fixed, and when a place where there is more clogging than expected is clogged, it is clogged more than expected. The prevention effect was reduced, and there was a problem that a sufficient dust collection volume could not be secured.

  This invention solves the said conventional subject, and it aims at providing the vacuum cleaner which can exhibit the clogging prevention effect also when used in various environments.

  In order to solve the above-described conventional problems, a vacuum cleaner of the present invention captures dust particles that are sucked in, a dust collection box, a guide pipe that is disposed at an intake port of the dust collection box, and that guides airflow. An airflow adjustment pipe, which is provided with a coarse dust filter and adjusts the airflow guided by the guide pipe, is detachably attached to the guide pipe, and accelerates the flow velocity of the suction airflow or generates more turbulence. Since it can be easily fitted to another air flow adjustment pipe, it is possible to adjust the air flow from the guide pipe into multiple patterns, and even when used in various environments, it prevents clogging of the coarse dust filter Can be demonstrated.

  There are various ways to attach and detach the air flow adjustment pipe, but the air flow adjustment pipe should be detachable from the guide pipe while leaving the tight surface of the dust collection box to ensure airtightness with the vacuum cleaner body. Accordingly, the fitting portion between the guide pipe and the airflow adjustment pipe does not require packing or the like for ensuring airtightness, and the attachment / detachment configuration can be simplified.

  The vacuum cleaner of the present invention has a simple configuration in which the airflow adjusting pipe can be attached to and detached from the guide pipe, and can exhibit an effect of preventing clogging under various usage environments.

Sectional drawing of the principal part of the vacuum cleaner main body of the electric vacuum cleaner in Embodiment 1 of this invention Part A enlarged view of FIG. The principal part expanded sectional view of the vacuum cleaner in Embodiment 2 of this invention. The principal part expanded sectional view of the vacuum cleaner in Embodiment 3 of this invention.

  1st invention is equipped with the dust collection box, the guide pipe which is arrange | positioned at the inlet of the said dust collection box, and guides an airflow, and the coarse dust filter which capture | acquires the sucked coarse dust, It guides with the said guide pipe The air flow adjustment pipe that adjusts the generated air flow is detachably attached to the guide pipe, and it can be replaced with another air flow adjustment pipe that accelerates the flow velocity of the suction air flow or more easily generates turbulence Therefore, the airflow from the guide pipe can be adjusted to a plurality of patterns, and the effect of preventing clogging of the coarse dust filter can be exhibited even when used in various environments.

  There are various ways to attach and detach the air flow adjustment pipe, but the air flow adjustment pipe should be detachable from the guide pipe while leaving the tight surface of the dust collection box to ensure airtightness with the vacuum cleaner body. Accordingly, the fitting portion between the guide pipe and the airflow adjustment pipe does not require packing or the like for ensuring airtightness, and the attachment / detachment configuration can be simplified.

  In the second invention, in particular, the guide pipe and the air flow adjusting pipe of the first invention can be easily attached and detached by taper fitting, and can be attached and detached with a simple and easy-to-attach structure, which is inexpensive and easy to use. The guide pipe can be adjusted in flow rate by the tapered shape of the guide pipe, and the clogging of the coarse dust filter can be reduced.

  In the third invention, in particular, the guide pipe and the airflow adjusting pipe of the first invention are easily detachable between the claw and the claw engaging portion, and can be attached and detached with a simple and relatively easy construction. It is possible to make a detachable configuration that is inexpensive and easy to use, and even when fine dust enters the claw engagement part, the detachability operability does not deteriorate greatly, and even if repeated detachment, the guide pipe and air flow adjustment It is possible to prevent the suction airflow from being disturbed due to wear of the mating surfaces of the pipes and the loss of the airtightness between the two pipes, thereby improving the reliability of the attachment / detachment configuration.

  In particular, the fourth invention has a circular fitting portion between the guide pipe and the airflow adjustment pipe of the first invention so that the guide pipe and the airflow adjustment pipe can be easily attached and detached. It is possible to attach and detach with a simple and relatively easy to attach and detach configuration, and it is possible to make the detachable configuration inexpensive and easy to use, and the intake port of the dust collection box is generally circular, so the intake port and the guide pipe And the fitting part of the air flow adjustment pipe can be configured to be smoothly connected, and the clogging of the coarse dust filter and the intake noise can be reduced by reducing the flow velocity of the suction air flow by reducing the pressure loss.

  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 of a main part of a vacuum cleaner main body of an electric vacuum cleaner according to Embodiment 1 of the present invention, and FIG. 2 is an enlarged view of a portion A in FIG.

  In FIG. 1, a vacuum cleaner main body 1 of the vacuum cleaner in the present embodiment is connected to a suction port body (not shown) and a hose (not shown) communicating with an extension pipe (not shown). In addition, a suction port 2 communicating with the hose, an electric blower 3 at the rear, and a dust collection box storage portion 5 for storing the dust collection box 4 between the suction port 2 and the electric blower 3 are provided. The dust collection box 4 includes a dust collection chamber 6 having a rear opening for collecting dust and a flat wind receiving portion 7 and covers the rear opening of the dust collection chamber 6 to collect coarse dust sucked. 8 and a pleated fine dust filter 9 for catching fine dust.

  As shown in FIG. 2, a guide pipe 11 that communicates with the suction port 2 and guides the airflow to the wind receiving portion 7 of the coarse dust filter 8 is formed integrally with the intake port 10 of the dust collection box 4. Here, the guide pipe 11 is formed in a tapered shape, and at the tip of the guide pipe 11, there is a tapered airflow adjustment pipe 12 that is narrowed so as to accelerate the flow velocity of the airflow guided by the guide pipe 11. It is easily detachably fitted by taper fitting.

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

  First, when the cleaner body 1 is in an operating state, the dust on the floor is sucked into the dust collection chamber 6 of the dust collection box 4 through the suction port, the extension pipe, and the hose by the suction force from the electric blower 3. . When dust is sucked into the dust collection chamber 6, the suction airflow including dust flows from the air inlet 10 of the dust collection box 4, is guided to the guide pipe 11, and is once accelerated by the tapered shape of the guide pipe 11. The air flow adjusting pipe 12 further accelerates the flow velocity and collides with the wind receiving portion 7 of the coarse dust filter 8. After that, this time, the direction is changed upward and the dust accumulated on the surface of the coarse dust filter 8 is cleaned while colliding with the upper surface of the dust collecting chamber 6, and then becomes a swirl airflow to remove the coarse dust in the suction airflow. It is captured by the filter 8 and accumulated in the dust collecting chamber 6.

  Fine dust that has passed through the coarse dust filter 8 is captured by the fine dust filter 9 and accumulated in the fine dust filter 9 and the space between the coarse dust filter 8 and the fine dust filter 9.

  As described above, in the first embodiment, the guide pipe 11 is tapered, so that the flow velocity of the suction airflow can be temporarily adjusted by the guide pipe 11 and further the flow velocity can be adjusted by the airflow adjustment pipe 12. By further adjusting the acceleration, the flow velocity of the airflow flowing on the surface of the coarse dust filter 8 can be accelerated, the cleaning performance of the surface of the coarse dust filter 8 can be improved, and clogging can be reduced.

  Also, when cleaning a place where there is a lot of clogging, it is possible to replace the air flow adjustment pipe 12 with an increased throttle amount so that the acceleration of the flow velocity is increased. Clogging can be reduced and cleaning can be continued comfortably.

  Further, by adopting a taper fitting between the guide pipe 11 and the airflow adjusting pipe 12, it is possible to attach and detach with a simple and easy detachable configuration, and an inexpensive detachable configuration with good usability can be achieved.

  The configuration according to the present embodiment is a centrifugal vacuum cleaner that prevents the clogging of the coarse dust filter while flowing the suction airflow in a substantially cylindrical dust collection box or the substantially tangential direction of the coarse dust filter. Needless to say, it can also be applied to other guide pipes.

(Embodiment 2)
The vacuum cleaner in the 2nd Embodiment of this invention is demonstrated using FIG. FIG. 3 is an enlarged cross-sectional view of a main part of the electric vacuum cleaner in the present embodiment. Embodiment 1 above
The same parts as those of the electric vacuum cleaner in FIG.

  As shown in FIG. 3, the vacuum cleaner in the present embodiment is provided with a convex claw portion 13 on the outer periphery of the fitting portion of the guide pipe 11 with the airflow adjustment pipe 12, and the guide pipe of the airflow adjustment pipe 12. 11 is provided with an elastically deformable claw engaging portion 14, and the guide pipe 11 and the airflow adjusting pipe 12 are detachably fitted with the convex claw portion 13 and the claw engaging portion 14. It was made to do.

  As described above, according to the vacuum cleaner in the present embodiment, it is possible to improve the cleaning performance of the surface of the coarse dust filter 8 by accelerating and adjusting the airflow sucked by the airflow adjusting pipe 12. The clogging can be reduced, and the guide pipe 11 and the airflow adjustment pipe 12 are constituted by the convex claw part 13 and the claw engagement part 14 as the attachment / detachment means, thereby being simple and relatively easy to attach / detach. It is possible to attach and detach, and it is possible to make an detachable configuration that is inexpensive and easy to use, and even when fine dust enters the claw engagement portion 14, the detachability operability is not greatly deteriorated, and further detachment can be repeated. It is also possible to prevent the suction airflow from being disturbed due to wear of the mating surfaces of the guide pipe 11 and the airflow adjustment pipe 12 and the loss of the airtightness between the two pipes, and the reliability of the detachable configuration is great. To improve on.

(Embodiment 3)
The vacuum cleaner in the 3rd Embodiment of this invention is demonstrated using FIG. FIG. 4 is an enlarged cross-sectional view of a main part of the electric vacuum cleaner in the present embodiment. In addition, about the same part as the vacuum cleaner in the said Embodiment 1, 2, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 4, the vacuum cleaner in the present embodiment has a fitting portion between the guide pipe 11 and the airflow adjustment pipe 12 formed in a circular shape, and then the fitting of the guide pipe 11 with the airflow adjustment pipe 12. A fitting convex portion 16 having a fitting projection 15 is provided on the outer periphery of the portion, and the fitting convex portion 16 is fitted on the inner surface of the fitting portion of the airflow adjusting pipe 12 with the guide pipe 11, and the rotation direction and the front and rear directions. A positioning groove portion 17 that enables positioning in the direction and a handle hook-shaped recess portion 19 having an opening portion 18 that becomes an opening with respect to extraction of the airflow adjustment pipe 12 are provided, and the guide pipe 11 and the airflow adjustment pipe 12 are fitted to each other. The mating projection 16 and the positioning groove 17 are detachably fitted.

  Since the vacuum cleaner in the present embodiment is configured as described above, it is possible to improve the cleaning performance of the surface of the coarse dust filter 8 by accelerating and adjusting the sucked airflow with the airflow adjusting pipe 12. It is possible to reduce clogging, and as a detachable means, the guide pipe 11 and the airflow adjusting pipe 12 can be twisted and detached with the fitting convex part 16 and the positioning groove part 17, It is possible to attach and detach with a simple and relatively easy configuration, and it is possible to make the detachable configuration inexpensive and easy to use. Usually, since the intake port 10 of the dust collection box 4 is circular, the intake port 10 and the guide pipe 11 and the air flow adjusting pipe 12 can be configured to be smoothly connected, and the coarse dust filter 8 is further reduced by reducing the flow velocity of the suction air flow by reducing the pressure loss. Clogging reduction and can reduce the intake noise that.

  As described above, the vacuum cleaner according to the present invention has a simple configuration even when used in various environments, and can reduce clogging of the coarse dust filter and improve usability. Useful for vacuum cleaners.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 4 Dust collection box 8 Coarse dust filter 10 Air inlet 11 Guide pipe 12 Airflow adjustment pipe 13 Convex nail | claw part (claw)
14 Claw engaging part

Claims (4)

A dust collection box, a guide pipe that is disposed at the air inlet of the dust collection box and guides the airflow, and a coarse dust filter that captures the sucked coarse dust, and adjusts the airflow guided by the guide pipe. The vacuum cleaner which provided the airflow adjustment pipe so that attachment or detachment to the said guide pipe was possible. The electric vacuum cleaner according to claim 1, wherein the guide pipe and the airflow adjusting pipe are easily detachable by taper fitting. The electric vacuum cleaner according to claim 1, wherein the guide pipe and the airflow adjusting pipe can be easily attached and detached with a claw and a claw engaging portion. The vacuum cleaner according to claim 1, wherein a fitting portion between the guide pipe and the airflow adjustment pipe is formed in a circular shape so that the guide pipe and the airflow adjustment pipe can be easily attached and detached by twisting.