JP2011183013A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost vacuum cleaner, which prevents airflow resistance from being increased by attached and accumulated dust at the front section of a suction device of an electric blower and which maintains high suction performance. <P>SOLUTION: The vacuum cleaner includes: the electric blower which generates suction wind; and a dust collection chamber which stores a dust collection bag for collecting dust, wherein a projection, which is arranged at the downstream of the wind of the bag, pushes at least part of the bag to the upstream in response to the action of the wind blown from the blower to the bag. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a vacuum cleaner that can prevent a reduction in suction force even if dust accumulates in a dust collection bag.

  A conventional vacuum cleaner having a function of preventing a reduction in suction force even when dust accumulates in this type of dust bag has been proposed (see, for example, Patent Document 1). ). In such a vacuum cleaner configuration, the electric blower housed in the rear electric blower chamber emits suction air and the front dust collection chamber partitioned by the electric blower chamber and the partition wall collects dust. A dust collecting means; and a dust removing means for removing dust adhering to the dust collecting means, wherein the dust removing means is a vibrating device that generates a magnetic field by an electromagnet, an arm that is provided in the vibrating device and vibrates, and the arm And a dust removal unit that is permeable to air by adding an operation to the dust collection means. The arm and the dust removal unit are provided in the dust collection chamber, and the vibration device is disposed below the dust collection chamber outside the dust collection chamber. And the arm protrudes into the dust collection chamber.When the suction air is stopped, the dust collection means is vibrated by a vibration device to remove dust adhering to the dust collection means. Sifting off It is.

Japanese Patent No. 3950409

  However, in the above-described conventional configuration, the suction air generated by the electric blower and passing through the dust collecting means can pass through the dust-removing portion having air permeability as it is. Since it adheres to the means, the suction performance tends to deteriorate. In addition, a vibration device composed of an electromagnet or the like for performing dust removal is necessary, and the cost is high.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a vacuum cleaner capable of maintaining high suction performance at a low cost by preventing dust from concentrating on a part of a dust collection bag. And

  In order to solve the above-described conventional problems, the present invention provides an electric blower that emits suction air and a vacuum cleaner that has a dust collection chamber that houses a dust collection bag that collects dust. When wind acts on the dust collection bag, a protrusion is provided on the downstream side of the suction wind of the dust collection bag to press at least a part of the dust collection bag to the upstream side.

  With the above configuration, the air flow sucked into the dust bag from the air inlet is directed to the portion where the suction pressure generated by the electric blower is most concentrated, but since the protrusion is provided outside the portion, the air flow of the dust bag is The portion is deformed to the intake port side (upstream side of the suction air), and the shape of the air flow causes a swirling flow toward the front, upper, lower, left and right side walls of the dust bag or the front surface of the intake port. This air flow makes it difficult for dust to adhere to the part where the suction pressure of the dust bag is most concentrated, and dust is collected from other parts, so the dust bag as a whole is caused by a concentrated dust pool. An increase in ventilation resistance can be suppressed as much as possible, and a vacuum cleaner capable of maintaining high suction performance can be provided at low cost.

  The electric vacuum cleaner of the present invention can prevent dust concentration on the portion where the suction pressure of the dust bag is most concentrated, and can maintain high suction performance. Moreover, since only a non-venting part is provided, it can be realized at low cost.

Whole perspective view of the vacuum cleaner in embodiment of this invention Cross section of the vacuum cleaner Perspective view of the vacuum cleaner without the lid Perspective view of dust bag case of the vacuum cleaner

  The present invention provides an electric blower that generates suction air and a vacuum cleaner having a dust collection chamber that houses a dust collection bag for collecting dust, and when the suction air generated from the electric blower acts on the dust collection bag. The dust bag is provided with a protrusion on the downstream side of the suction wind of the dust bag so as to press at least a part of the dust bag toward the upstream side. An increase in ventilation resistance can be suppressed.

  In addition, since the projecting portion is projected in a square shape, semicircular shape, or mountain shape, the air flow is dispersed in the vertical and horizontal directions in the dust collection chamber, and a swirling flow tends to be generated toward the intake port side. .

(Embodiment 1)
Hereinafter, the vacuum cleaner in the 1st Embodiment of this invention is demonstrated using FIGS. 1-4. An electric blower 2 is built in the rear part of the vacuum cleaner main body 1, and a dust collection chamber 5 for storing an electret-processed dust collection bag 4 that collects dust and is detachable is arranged in the front part. A pair of traveling wheels 6 are rotatably attached to both sides. A suction port 10 to which a connection pipe 9 provided at one end of the hose 8 is detachably connected is provided at the front portion of the electric vacuum cleaner main body 1.

  The electret-processed dust collection bag 4 is made of thermoplastic fibers such as polypropylene and is charged by friction such as air. Further, as shown in FIG. 4, the dust bag 4 is housed in a dust bag case 14 so as to be able to easily dispose of garbage, and they are united and housed in the dust chamber 5.

  The other end of the hose 8 is provided with a distal end pipe 12 having a handle 11 to be gripped during cleaning, and an extendable or jointable extension pipe 13 is detachably connected. The other end of the extension tube 13 is detachably connected to a suction tool 16 having a built-in rotary brush for dust lifting and a motor for rotationally driving the rotary brush.

  The front part of the electric blower 2 is supported in the electric blower chamber 3 by a support front 20 made of an elastic material and the rear part is also a support 21 made of an elastic material, and is supported by the motor case 22 and the motor cover 23. The support 20 and the support 21 are sandwiched.

There is a diaphragm 26 in front of the intake side of the motor front wall 24 having an intake lattice constructed in front of the intake side of the electric blower 2, and this diaphragm 26 is in contact with the dust collecting bag, and this is collected by vibrating. Tap the dust bag to remove the dust adhering to the inner surface of the dust bag. Note that vibration is generated in conjunction with the operation of pulling out the power cord 25 for supplying power to the electric blower 2. Further, the diaphragm 26 is shaped like a mountain with a center protruding at the position where the suction pressure emitted from the electric blower 2 is most concentrated outside the dust bag at a position facing the air inlet 10 of the vacuum cleaner body 1. A vent portion 27 is provided.

  The impermeable portion 27 may be provided with a small hole or the like in order to balance the intake efficiency performance of the electric blower 2. Moreover, even if it is not a mountain shape, a semicircle may be sufficient. Further, instead of the air-impermeable portion 27, a rib shape or a curved rib may be used. In other words, when the suction air blown from the electric blower 2 acts on the dust collection bag 4, it is sufficient if the projection bag is such that at least a part of the dust collection bag 4 is pressed toward the upstream side and the part is deformed. .

  The operation of the above configuration is as follows. When the electric blower 2 is operated, air and dust sucked from the suction tool 16 pass through the extension pipe 13 and the hose 8 and are sucked into the electric vacuum cleaner main body 1. In the electric vacuum cleaner main body 1, dust is collected by the dust collecting bag 4, and the filtered air passes through the electric blower 2, and exhaust air is discharged from the exhaust port 28 in the main body.

  At this time, since the non-venting part 27 whose center protrudes from the chevron formed on the diaphragm 26 is substantially in contact with the dust bag 4, the air flow sucked into the dust bag 4 from the air inlet 10 of the main body 1. Since the air and the dust have air resistance due to the air-impermeable portion 27, the dust and the dust are distributed in the upper, lower, left, and right circumferential directions in the dust bag 4 along the shape of the air-impermeable portion 27 protruding in a mountain shape. Become. A large amount of dust is collected from other than the surface of the dust bag 4 that faces the air inlet. In other words, dust does not concentrate and adhere to the portion of the dust bag 4 corresponding to the non-venting portion, and the increase in ventilation resistance of the dust bag 4 as a whole can be suppressed as much as possible, so that high suction performance can be maintained. Is possible.

  In the above-described embodiment, the non-venting part is provided on the diaphragm, but the same effect can be expected by providing the non-venting part in the dust bag case instead. Further, in the case where the diaphragm 26 itself is not provided, a similar effect can be expected if a non-ventilated portion is provided in a part of the motor front wall 24 having an intake lattice constructed in front of the intake side of the electric blower 2. In addition, a ventilation filter for preventing entry of foreign matter into the electric blower is generally provided in the ventilation path leading from the dust collection chamber to the electric blower chamber, and a non-venting portion can be provided in a part of the ventilation filter.

  As described above, the vacuum cleaner according to the present invention can be widely applied to various household and commercial vacuum cleaners that are excellent in maintaining high suction performance by simple means.

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner body 2 Electric blower 4 Dust collection bag 5 Dust collection chamber 10 Air inlet 14 Dust collection bag case 24 Motor front wall 26 Dust removal plate 27 Air-impermeable part

Claims (7)

In an electric vacuum cleaner having an electric blower for generating suction air and a dust collection chamber for storing a dust collection bag for collecting dust, when the suction air generated from the electric blower acts on the dust collection bag, the dust collection A vacuum cleaner, wherein a protrusion that presses at least a part of the dust bag toward the upstream side is provided on the downstream side of the suction air of the bag. 2. The electric vacuum cleaner according to claim 1, wherein the projecting portion has a dogleg shape or a curved shape projecting upstream of the suction air. 2. The electric vacuum cleaner according to claim 1, wherein the projecting portion is a semi-spherical shape or a mountain shape convex toward the upstream side of the suction air. The dust collecting chamber is provided with a dust removing plate for removing dust adhering to the inner surface of the dust collecting bag by vibration, and a protrusion is provided in a part of the ventilation path of the dust removing plate. An electric vacuum cleaner given in any 1 paragraph. The electric cleaning according to any one of claims 1 to 3, wherein a dust bag case storing the dust bag is provided, and a protrusion is provided in a part of a ventilation path of the dust bag case. Machine. The electric vacuum cleaner according to any one of claims 1 to 3, wherein an intake grid is provided in front of the intake side of the electric blower, and a protrusion is provided in a part of the intake grid. 4. A ventilation filter that prevents foreign matter from entering the electric blower is provided in a ventilation path that extends from the dust collection chamber to the electric blower chamber, and a protrusion is provided in a part of the ventilation filter. A vacuum cleaner according to claim 1.