JPS6130607Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dust collection device for a vacuum cleaner that prevents clogging of a filter device and performs good dust collection for a long period of time.

In conventional dust collectors in which the inside of the dust collection case below the filter device is used as a dust reservoir, the dust in the reservoir is affected by the intake air flow and is lifted up and re-attached to the filter device. Ta. The above effects were particularly noticeable in the cyclone system, which introduces dust-containing air into the dust collection case in a swirling manner.

That is, in the cyclone system, a vortex is generated in the dust collection case, the center of which becomes a negative pressure, and the dust that has accumulated once flies up along the negative pressure.

As a result, the filter device becomes clogged early and has the drawback of not being able to collect dust efficiently.

The present invention eliminates these conventional drawbacks; in other words, the entire outer circumference of the filter device disposed above the interior of the dust collection case is surrounded by a cylindrical body with a gap, and a cylindrical body is provided at the center of the cylindrical body. An air intake port is formed in a part of the dust collection case.

According to the above configuration of the present invention, the dust-containing air that flows in from the intake port first collides with the cylindrical body to reduce its velocity energy, and then splits to the left and right, and the air comrades in the gap on the opposite side of the intake port. They collide, further reducing their velocity energy. By sufficiently reducing the velocity energy of the incoming air, the dust accumulated in the dust collection case is prevented from flying up. Examples thereof will be described below with reference to the accompanying drawings.

In the figure, 1 is a main body of a vacuum cleaner disposed behind a cart 4 having front and rear wheels 2 and 3, and has a built-in motor 5 and a fan 7 connected to the motor 5 via a belt 6. 8 is a main body intake port connected to the suction side of the fan 7 by a hose 9; 10 is a cylindrical dust collection case supported in front of the trolley 4 and detachable from the vacuum cleaner main body 1;
Reference numeral 11 indicates a moving ring attached to the bottom, and reference numeral 12 indicates a hollow lid that opens and closes the upper opening, and a main intake port 8.
A part thereof has a vent 13 that communicates with the air vent. Reference numeral 14 denotes a filter device suspended from the lower partition wall 15 of the hollow lid 12, which is constructed by disposing a cylindrical pre-filter 17 outside a corrugated cylindrical main filter 16, and is opened and closed by a valve 18. A funnel-shaped fine dust receiver 20 having a dust exhaust port 19 is fixed to the lower end of the prefilter 17.

21 is made into a cylindrical body and surrounds the outer periphery of the prefilter 17 with a gap t, and
The upper end is fixed to the lower wall 15. Reference numeral 22 represents an external operating body for removing dust from the main filter 16 and opening/closing the valve 18, and reference numeral 23 represents an air intake port formed in a part of the dust collecting case 10, facing the center of the cylindrical body 21.

In the above configuration, the dust-containing air flowing in from the intake port 23 is filtered by the filter device 14, and then only the purified air is transferred from the inside of the hollow lid 12 to the ventilation port 1.
3 → Main intake port 8 → Hose 9 and flows to fan 7
and is exhausted to the outside.

In the filter device 14, coarse dust in the dust-containing air is captured by a pre-filter 17, and fine dust is captured by a main filter 16. Coarse dust falls through the gap t, and fine dust falls through the dust outlet 19 of the fine dust receiver 20 by opening the valve 18 into the space A below the filter device 14, where they are collected. be.

Now, the flow form of the dust-containing air flowing in from the intake port 23 to the filter device 14 will be described. As shown in FIG. 2, the dust-containing air from the intake port 23 first collides with the cylindrical body 21 to reduce its velocity energy and take on a form of branching to the left and right. Next, the branch fluid collides with the intake port 23 on the opposite side to further reduce its velocity energy, and then flows into the gap t and reaches the prefilter 17.

However, the dust accumulated in the space A is not blown up by the dust-containing airflow to the filter device 14, and it is thereby possible to prevent the dust from re-adhering to the filter device. .

As described above, the present invention has an excellent effect in that the filter device is free from clogging and can perform a good dust collection operation for a long period of time.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a vacuum cleaner showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the main parts. 10...dust collection case, 14...filter device, 21...cylindrical body, 23...intake port.

Claims (1)

[Scope of utility model registration request] The filter device is arranged above the inside of the dust collection case, and the entire outer circumference of the filter device is surrounded by a cylindrical body with a gap therebetween, and an air intake port is formed in a part of the dust collection case toward the center of the cylindrical body. Vacuum cleaner dust collector.