JPS6014432Y2 - vacuum cleaner - Google Patents

Description

[Detailed description of the invention] The present invention relates to a dust collection device for a vacuum cleaner, and its purpose is to effectively open and expand the dust bag to increase the amount of dust collected. .

Generally, in vacuum cleaners, in order to dispose of garbage in a sanitary manner, a dust bag made of a plastic bag or a paper bag is set in the dust collection section, and after the dust is collected in the dust bag, the dust bag is removed and the bag is thrown away. That's what I do.

Figures 2 to 4 show an example of a vacuum cleaner using the dust bag, and in the figure, 1 is the main body of the vacuum cleaner with an electric blower 2 inside, and the front part is equipped with a dust collection structure. Dust box 3
It is attached so that it can be attached and detached or opened and closed freely.

The dust collection structure includes a base plate 5 provided with an airtight gasket 4 on the outer periphery, a primary filter 7 provided in a cylindrical portion 6 protruding from the base plate 5, and a primary filter 7 held behind the primary filter 7. The main elements are a filter unit 10 which is integrally provided with a secondary filter 8 and an intake pipe 9 which is provided integrally on the outside of the cylindrical portion 6.

This filter unit 10 is fitted with the outer periphery of the base plate 5 into the opening of the dust box 3 with the gasket 4 interposed therebetween.
It is detachable from the dust box 3.

When the filter unit 10 is attached to the dust box 3, one end of its intake pipe 9 is connected to an intake pipe 11 provided inside the upper part of the dust box 3. The other end opens inward of the dust box 3.

In addition, a ventilation hole 12 and a filter 13 are provided on the outside of the cylindrical portion 6 of the base plate 5 of the filter unit 10, and a dust outlet 14 and an opening/closing lid 15 are provided below the filter 7. There is.

The opening/closing lid 15 is pivoted at its upper end and normally closes the dust outlet 14 by gravity.

Then, expand an impermeable dust bag 16 such as a plastic bag or a paper bag inside the dust box 3, and insert the opening of the bag into the filter unit 1.
The dust bag 16 is attached to the filter unit 10 by fitting it onto the outer periphery of the cylindrical portion 6 including the intake pipe 9 of No. 0 and tightening it with a rubber ring 17.

In the figure, 18 is a hose, 19 is a hose connection pipe, and 20 is a lock button.

This vacuum cleaner operates an electric blower 2 to guide dust-containing air through intake pipes 11 and 9 to a primary filter 7, remove coarse dust, and further remove fine dust in a secondary filter 8. The cleaned air is discharged from the rear of the main body 1 through an electric blower 2.

The coarse dust is collected directly into the dust bag 16, and the fine dust removed by the secondary filter 8 is collected into the dust bag 16 from the dust outlet 14 by opening the opening/closing M15 by tilting the dust box 3.

Thereafter, the dust box 3 is separated from the main body 1, the filter unit 10 is removed from the dust box 3, and the dust bag 16 is removed from the filter unit 10 and thrown away.

By the way, the dust bag 16 is greatly expanded inside the dust box 3,
Also, make sure not to block the filter during operation.

For this purpose, the chamber inside the dust box 3 is communicated with the negative pressure side of the electric blower 2 through the ventilation hole 12, and negative pressure is applied to the outside of the dust bag 16, so that the dust bag 16 becomes part of the filter. Prevents it from being adsorbed.

On the other hand, in this vacuum cleaner, the dust bag 16 may not be used, and in this case, the dust-containing air may be discharged from the inside of the dust box 3 through the ventilation hole 12. A filter 13 must be installed in the

Therefore, this filter 13 becomes a resistance material, and it is not possible to efficiently create a negative pressure inside the dust box 3.

The present invention takes these matters into consideration and attempts to efficiently create a negative pressure inside the dust box, and one embodiment thereof is shown in FIG. 1 below.

The present invention provides the above-mentioned vacuum cleaner with a vent 12 in the base plate 5 of the filter unit 10 and a filter 13.
This structure is characterized by a structure in which a small diameter communication hole 23 communicating with a Japanese-style room 22 is provided in a pipe wall 21 of an intake pipe 11 formed at the upper part of a waist dust storage box 3.

Note that other structural members in the drawings are the same as those shown in FIGS. 2 to 4 described above, and therefore are designated by the same reference numerals.

In the vacuum cleaner of the present invention having the above configuration, when the electric blower 2 is operated to suck in dust-containing air, an air flow of about 30 meters/second is generated inside the intake pipe 11, and the wall of the intake pipe 11 is Dynamic pressure is generated on the surface 21, and its value is h=84 according to Bernoulli's theorem, and this acts on the Japanese-style room 22 through the communication hole 23.

Here, ρ is the air density, ■ is the air flow g is the acceleration of gravity, and h
is the height when the dynamic pressure is converted into a water column.

In this equation p = 0.0012, v = 30.0OC
71! 7 seconds, g = 980 cm/sec 2 is calculated, h = 50, and the pressure P1 in the Japanese-style room 22 of the dust box 3 is lower than the pressure P2 in the intake pipe 11 by 5 cm of water column.

Moreover, the pressure P3 inside the dust bag 16 is the pressure P2 inside the intake pipe 11.
are almost the same, the pressure inside and outside the dust bag 16 is lower on the outside, and the dust bag 16 tends to spread into the Japanese-style room 22 and does not come into close contact with the front surface of the primary filter 7.

Therefore, a large amount of dust can be stored in the dust bag 16.

Further, when the dust bag 16 is not used, dust-containing air enters the Japanese-style room 22 through the communication hole 23, but since it is located before the filter unit 10, there is no need to provide a separate filter in the communication hole 23.

As is clear from the above explanation, the vacuum cleaner of the present invention has a simple structure in which a hole is provided in the dust collection section to communicate between the intake pipe and the inside of the dust collection box, and the dust collection bag is expanded and the filter element is connected to the vacuum cleaner. It has the advantage that it prevents the dust from coming into close contact with each other, and there is no problem in removing dust even when a dust bag is not used, so it has a great practical effect.

[Brief explanation of the drawing]

Fig. 1 is a sectional side view of a vacuum cleaner according to an embodiment of the present invention, Fig. 2 is a sectional side view of a conventional vacuum cleaner, and Fig. 3 is a perspective view of the same filter unit with a dust bag attached. FIG. 4 is a perspective view of the filter unit with the hawk bag removed. 1...Body of the vacuum cleaner, 2...Electric blower, 3...Dust box, 5...Base plate, 6...・Cylinder part, 7...1st filter, 2nd order filter, 9...Intake pipe, 1
0...Filter unit, 11...
Intake pipe, 16...Dust bag, 21...Pipe wall, 22...Japanese-style room, 23...Communication hole.

Claims (1)

[Scope of utility model registration request] A dust box is provided on the suction side of a main body equipped with an electric blower, and the dust box is provided with an intake pipe and a removable filter unit, and the filter unit is connected to the intake pipe of the dust box. , and an intake pipe that opens into the dust box, and the mouth of an impermeable dust bag inside the dust box is attached to the outer periphery of the cylindrical part containing the intake pipe of the filter unit. A vacuum cleaner characterized in that a hole communicating with the inside of the dust box is provided in the pipe wall of the intake pipe of the dust box.