JPS62221328A - Electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vacuum cleaner, and particularly to a vacuum cleaner with enhanced dust suction power.

[Prior Art] A vacuum cleaner commonly used in the past has a main body case equipped with a fan driven by a motor, a filter, and a dust collecting section, and a flexible hose is attached to the main case. A suction port is connected to the tip of the fan via an extension tube, and the fan is operated to generate an intake air flow to suck in dust.

[Problems to be Solved by the Invention] However, in the vacuum cleaner with the above configuration, air is sucked in as a straight flow from the suction port;
The only way to increase the suction power and increase the degree of vacuum is to increase the output of the motor. Therefore, there was a problem in that the vacuum cleaner itself not only became larger, but also became more expensive.

This invention was made in view of this problem.

The purpose is to provide a vacuum cleaner that can improve the dust suction power by increasing the pressure difference between the suction port and the atmospheric pressure, that is, the degree of vacuum, without increasing the size of the motor or fan.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a vortex generation section made of guide vanes at the suction port, and uses the vortex effect to increase dust suction power. It is something.

[Function] In other words, in this vacuum cleaner, when the fan is started by the motor, a tornado-like vortex is generated in the suction port that strongly stirs up dust etc. by the guide vanes of the vortex generator, and this creates a negative pressure air flow. is significantly strengthened.

[Embodiments] Hereinafter, the present invention will be described in detail with reference to embodiments shown in the accompanying drawings.

As shown in FIG. 1, this vacuum cleaner has a main body case 1 with casters, and a fan 5 driven by a motor 4 and a filter 6 are installed in a housing part 2 of the main body case 1.
A flexible hose 7 is attached to the dust collecting part 3, and an inlet 9 is connected to the hose 7 via an extension pipe 8, and dust is sucked through the inlet 9. In this case, as shown in FIGS. 2 and 3, the inlet port 9 is constructed by integrating, for example, the inhaler main body 11 and the inhaler pipe section 10 connected to the extension tube 8. 6 Inhaler body 1 consisting of a funnel-shaped inhaler body
A plurality of windows 12 are formed on the lower edge of the inhaler body 11 for sucking in outside air, and a vortex generating section 13 is provided inside the inhaler main body 11.

The vortex generating section 13 is made up of a plurality of curved guide vanes 14. The upper part of each guide vane 14 is formed so as to be tangentially connected to the inner diameter of the suction pipe part 10, and the lower part thereof is connected to the inhaler main body 11. A protrusion 15 is provided that protrudes downward from the bottom surface 11a. This protrusion 15 has flexibility and smoothly contacts the floor surface when the vacuum cleaner is moved, thereby promoting smooth movement of the vacuum cleaner.

Note that this protrusion 15 may be a brush.

The guide vane 14 is preferably formed so that its cross section has an involute curve, but its direction may be either right or left. The reason for this is that the rotating direction of the air vortex, which will be described later, may be in any of the left and right directions.

Further, according to this embodiment, the extension tube 8 is also provided with a vortex generating section 1G.

This vortex generating part 16 is made up of a spiral guide vane 18h1 made by twisting a band plate of a predetermined width in a spiral shape a plurality of times with a predetermined pinch.
Its both ends are attached to pins 1.9.19 driven in the diametrical direction of the extension tube 8, for example by caulking or the like.

Like the guide vane 14 described above, the spiral guide vane 18 is preferably formed so that its cross section exhibits an involute curve in the right or left direction. Note that the vortex generating section 16 provided with the spiral guide vanes 18 may be detachably attached to the extension tube 8. Further, if necessary, a plurality of spiral guide blades 18 may be arranged at predetermined intervals so that the blades coaxially overlap each other.

In the above configuration, when the fan 5 is rotated by the motor 4, a negative pressure air flow is generated within the hose 7, the extension pipe 8, and the suction port 9 for collecting dust in the dust collecting section 3. In this case, in the inhaler main body 11 of the inlet 9, tl, the city flow generation part 1
The air flow containing dust is transferred to the third guide vane 14 by the third guide vane 14.
It makes a swirling motion in the direction of the arrow in the figure, and becomes a vortex in the suction pipe section 10.

Then, the air flow that has become /1iII flow is inside the extension pipe 8,
Furthermore, the spiral guide vane 18 of the vortex generating section 16 causes a spiral movement in the direction of the arrow in FIG.
At the top where there is no flow, it becomes a free vortex.

This kind of eddy current produces the same effect as a natural phenomenon, which is a tornado, which stirs up dust with negative pressure, so the dust suction power of a vacuum cleaner is lower than that of a conventional vacuum cleaner, even when using a motor and fan with the same output.
Significantly strengthened.

Further, since each guide vane 14, 18 has an involute cross section, the air flow is smooth and there is little velocity loss.

[Effects of the Invention] As described above in 1, according to the present invention, a vortex flow of air containing dust is generated within the suction port by installing a vortex generation section having a plurality of guide vanes within the suction port. death,
Dust suction power is significantly enhanced.

That is, even when using a motor and fan with the same output as conventional ones, the dust suction force is strengthened by about ρV2/2R, where the air density ρ, the average radius of the vortex is R1, and the turning linear velocity at the radius R is V. Therefore, an electric eliminator with strong dust suction power can be provided without increasing the size.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view of the electric J-removal machine according to the present invention, Fig. 2 is a side sectional view of the suction port, Fig. 3 is a bottom view of the suction port, and Fig. 4 is a view of the extension pipe. Side sectional view. FIG. 5 is a bottom view of the extension tube. In the figure, 9 is an inlet, 10 is an inhalation pipe, 11 is an inhaler body,
13 is a vortex generating section, and 14 is a guide vane.

Claims (3)

[Claims] (1) Connect the suction port to the main body case, which is equipped with a negative pressure generation section including a motor and fan, and a dust collection section with a filter, through a connection means such as a hose, and set the suction port in a negative pressure state. A vacuum cleaner for collecting dust, characterized in that a vortex generation section made of a plurality of guide vanes is provided in the suction port. (2) The suction port consists of an inhaler main body and a suction pipe section connected to the inhaler main body, and each guide vane of the vortex generation section is connected tangentially to the inner diameter of the suction pipe section. The vacuum cleaner according to claim 1, characterized in that: (3) The vacuum cleaner according to claim 1, wherein the guide blade is formed so that its cross section is an involute curve.