JPS6259578B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a so-called water-absorbing vacuum cleaner that can suck not only dust but also sewage.

Conventional configuration and its problems Conventionally, in this type of vacuum cleaner, when the amount of water in the dust collection case reaches a predetermined value, a water level-responsive type float valve closes the suction side of the fan motor and prevents water from flowing into the fan motor. It prevented water from entering.

However, when the suction side of the fan motor is closed using the float valve, the filter gets wet with water, so this filter needs to be made of a special material that is permeable to water, which inevitably reduces its dust collection properties. It was hot. There was also the problem that when the filter got wet with water, the ventilation resistance increased and the suction power weakened.

OBJECTS OF THE INVENTION The present invention overcomes these conventional drawbacks and ensures the protection of the filter against water.

Structure of the Invention The vacuum cleaner of the present invention includes a main body having a built-in fan motor, a dust collection case detachably connected to the lower part of the main body and having an air intake port formed in a part of the peripheral wall, a main filter, and A partition wall that partitions the lower side of the main filter and is provided with a vent; a rigid cylindrical pre-filter surrounding the vent and provided vertically below the partition wall; and a vertically movable pre-filter inside the pre-filter. It is equipped with a float valve for opening and closing the ventilation hole installed inside.

Therefore, the float valve moves up in the prefilter as the amount of water in the dust collection case increases, and closes the vent before the water reaches the main filter.

Description of examples Examples thereof will be described below with reference to the accompanying drawings.

In the figure, 1 is a main body that has a built-in fan motor 2 and an exhaust port 3 formed on the side, and 4 is a main body that is detachably connected to the lower part of the main body 1, that is, the suction side of the fan motor 2 via a buckle 5. The dust collection case has an intake port 6 on the upper side of its peripheral wall, and a front wheel 7 and a rear wheel 8 on the bottom. Reference numeral 9 indicates a packing 10 fixed to the outer peripheral edge of the bottom plate 1 of the main body 1.
1 is a main filter held between the outer periphery of the dust collection case 4 and the upper opening end of the dust collection case 4; 12 is a radial rib for holding the main filter 9 hanging from the bottom plate 11;
Reference numeral 13 denotes a partition wall that partitions the lower side of the main filter 9. This partition wall 13 has a dish shape, and its outer peripheral edge is the packing 10 of the main filter 9.
Similarly, it is held between the main body 1 and the dust collection case 4. 14 is a ventilation hole formed in the center of the partition wall 13;
5 is a rigid cylindrical prefilter that surrounds this vent 14 and has its upper end fixed to the partition wall 13 and its lower end fixed to the dust collection case 4; 16 moves up and down inside the prefilter 15 to close the vent 14; It is a float valve that opens and closes.

In the above configuration, during normal cleaning, the airflow from the intake port 6 passes through the pre-filter 15 → main filter 9 and reaches the fan motor 2. Each dust is to be passed away.

Next, in the case of water absorption, since the mass is large,
Dust collection case 4 without reaching main filter 9
Water is stored inside the tank. As the water level rises, the float valve 16 moves upward, and when the water level approaches the bulkhead 13, the float valve 16 closes the vent 14, causing the fan motor 2 and main filter 9 to close.
This prevents water from entering.

Effects of the Invention As described above, according to the present invention, water is prevented from entering not only the fan motor but also the main filter during water absorption operation, so that the fine dust resistance of the main filter is not reduced. It is also possible to prevent an increase in ventilation resistance and a decrease in service life. Furthermore, although the prefilter is submerged in water, it is only used to remove coarse dust and has a relatively large ventilation section, so it is hardly affected by the adverse effects of water.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a vacuum cleaner showing an embodiment of the present invention, and FIG. 2 is a sectional view. DESCRIPTION OF SYMBOLS 1... Main body, 2... Fan motor, 4... Dust collection case, 6... Intake port, 9... Main filter, 13... Partition wall, 14... Ventilation port, 15... Pre-filter, 16... float valve.

Claims (1)

[Claims] 1. A main body with a built-in fan motor, a dust collection case that is removably connected to the bottom of this main body and has an air intake port formed in a part of the peripheral wall, and a dust collection case that is installed horizontally in the middle of the ventilation path from the air intake port to the fan motor. A main filter is installed, a partition wall that horizontally partitions the lower side of the main filter and has a ventilation hole in the center, and a rigid cylindrical shape that surrounds the ventilation hole and is provided vertically below the partition wall. A vacuum cleaner comprising a pre-filter, and a float valve for opening and closing a vent, which is vertically movable inside the pre-filter.