JPH0759692A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent foams from being sucked into a motor fan by restraining foaming in a dust box when a detergent or the like is sucked up. CONSTITUTION:A deforming agent feed pipe 4 communicated with a dust box 1 is connected to a defoaming agent tank 3 for reserving a defoaming agent, and a lid 6 having a pin hole 7 which is closed when no pressure is applied to a dust box 1 side opening end 5 of the feed pipe 4, is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner capable of absorbing water.

[0002]

2. Description of the Related Art A conventional vacuum cleaner capable of absorbing water is made of a resin molded product or the like for storing water and dust as shown in FIG. A filter 23 for filtering and collecting dust inside is set, and a main body 25 incorporating a motor fan 24 for intake is set and used from above. The float valve 2 is provided below the intake port 26 of the main body 25 having the motor fan 24 built therein.
7 is provided, and the absorbed water collects in the dust box 22 and its water level rises to float the float valve 27 to a predetermined height. As the flow velocity of the flow increases, the negative pressure generated on the top surface of the float valve 27 by the intake flow increases, and the float valve 27 is finally sucked to the intake port 26 of the main body, and the intake port 26 of the main body 26 Is sealed to prevent further water absorption.

[0003]

When a conventional vacuum cleaner that can also absorb water absorbs a foaming detergent liquid or the like, it is sucked into the dust box 22 while foaming by being agitated with the intake air in the extension pipe and the hose. The detergent liquid is further stirred in the dust box by intake air, and foaming is increased. A large amount of bubbles sucked into the dust box 22 or generated in the dust box 22 by them has a very small specific gravity with respect to the liquid, and therefore the float valve for preventing the liquid from being sucked into the intake port 26 of the main body. 27 does not generate buoyancy to lift it up, and a large amount of bubbles accumulate in the dust box 22 and the intake port 2 of the main body 2
Even if the bubbles are sucked from 6, the float valve 27 does not operate, and the bubbles are sucked to the motor fan 24 as they are, and further blown out of the main body 25 together with the exhaust gas.

[0004]

In order to achieve the above object, the vacuum cleaner according to the present invention is provided with a tank for storing an antifoaming agent to be supplied into a dust box as a first technical means. Is connected to a defoaming agent supply pipe for supplying the defoaming agent from the tank to the dust box, and an air intake port is provided, and one end of the defoaming agent supply pipe has an opening at the intake port of the dust box. A cover made of an elastic material such as rubber having a pinhole that is closed when no pressure is applied is provided at the open end of the intake port of the defoaming agent supply pipe.

As a second technical means, an intake port guide made of a sintered body of lipophilic resin is provided inside the dust box at the intake port of the dust box, and the defoaming agent supplied from the defoaming agent tank is supplied to the intake port guide. The open ends of the tubes are connected.

As a third technical means, a lid body made of an elastic material such as rubber provided with a pinhole that is closed when no pressure is applied to the air intake port of the defoaming agent tank is provided.

In the fourth technical means, a diaphragm is provided in the defoaming agent tank, and the diaphragm expands and contracts according to the change in pressure inside the dust box.

According to a fifth technical means, a defoaming agent tank is provided in a floor nozzle, a spherical lid is rotatably provided under the tank, and the spherical lid serves as a floor surface when the floor nozzle is used. Due to the friction, the antifoaming agent in the tank is rotated while being wetted on its surface.

[0009]

According to the first technical means of the electric vacuum cleaner of the present invention having the above-described structure, when cleaning with water absorption is performed,
The inside of the dust box has a negative pressure compared to the outside air, and due to the negative pressure, the lid made of elastic material such as rubber at the open end of the defoaming agent supply pipe coming from the defoaming agent tank provided at the intake port of the dust box As a result of the deformation, the pinhole provided in the lid is opened, and the defoaming agent is supplied from the defoaming agent tank into the dust box through the defoaming agent supply pipe.

When the electric vacuum cleaner is not in operation, the pressure inside the dust box becomes the same as atmospheric pressure, and the pinhole of the lid provided at the opening end of the defoaming agent supply pipe is closed.
The supply of the defoaming agent in the defoaming agent tank into the dust box is reliably prevented.

According to the second technical means, the defoaming agent is supplied from the defoaming agent supply pipe coming from the defoaming agent tank to the intake port guide made of a sintered body of lipophilic resin provided at the intake port of the dust box. And is supplied and mixed into a liquid such as water that is sucked together with the intake air from the intake port guide surface.

Further, according to the third technical means, no pressure is applied to the lid body made of an elastic material such as rubber provided in the air intake port of the defoaming agent tank while the electric vacuum cleaner is stopped.
Therefore, it is not deformed and the pinhole provided in it is in a closed state. Therefore, the defoaming agent in the tank is not supplied into the dust box due to the balance between the atmospheric pressure and the pressure in the defoaming agent tank. When the vacuum cleaner is operated, the pressure inside the dust box drops, and the pressure change reaches the defoaming agent tank through the defoaming agent supply pipe, and the elasticity of rubber etc. provided at the air intake port of the defoaming agent tank. The defoaming agent in the tank is supplied into the dust box by deforming the lid made of a body and opening the pinhole provided in the lid to make the pressure in the tank equal to the atmospheric pressure.

In the fourth technical means, since the negative pressure generated in the dust box due to the operation of the electric vacuum cleaner also affects the defoaming agent tank through the defoaming agent supply pipe, the diaphragm provided in the defoaming agent tank is It shrinks and deforms, and the defoaming agent in the defoaming agent tank is pushed into the dust box and supplied.

In the fifth technical means, the spherical lid provided at the lower part of the defoaming agent tank provided on the floor nozzle is rotated while the surface is wetted with the defoaming agent as the floor nozzle is operated. The defoaming agent is supplied to and is sucked from the floor nozzle together with water on the floor.

[0015]

Embodiments Next, embodiments will be described with reference to the accompanying drawings.

FIG. 1 is a schematic sectional view of an electric vacuum cleaner according to an embodiment of the first technical means, in which a dust box 1 is provided with an intake port 2 on which a hose can be detachably fixed.
Inside the intake port 2, an open end 5 of a defoaming agent supply pipe 4 from a defoaming agent tank 3 is provided. The opening end 5 is provided with a rubber lid 6, and the lid 6 is provided with a pinhole 7 which is closed when the lid 6 is not deformed. When cleaning with water absorption is performed, the inside of the dust box 1 becomes a negative pressure, the negative pressure deforms the lid 6 to open the pinhole 7, and the defoaming agent from the defoaming agent tank 3 is sucked into the suction port 2 of the dust box 1. Supplied to the department. Then, it is mixed with sewage and the like sucked through the floor nozzle, extension pipe, and hose. Therefore, even if the inhaled sewage or the like contains detergent or the like that easily foams, the foaming is reliably suppressed, and the dust box 1 is not filled with foam. Further, the pinhole 7 of the lid 6 is closed when the electric vacuum cleaner is stopped, so that the supply of the defoaming agent from the defoaming agent tank 3 into the dust box 1 is surely stopped.

FIG. 2 shows an inlet guide 8 made of a sintered body of lipophilic resin provided at the inlet 2 of the dust box 1 of the electric vacuum cleaner according to the second technical means. An open end 5 of a defoaming agent supply pipe 4 coming from the defoaming agent tank 3 is connected to the mouth guide so that the defoaming agent in the defoaming agent tank 3 gradually exudes to the surface thereof. Since the liquid containing the detergent and the like sucked together with the intake air is collided with the intake port guide 8 and then sucked into the dust box 1, the defoaming agent is supplied from the surface of the intake port guide 8 at the time of collision.

FIG. 3 shows an air intake port 9 of a defoaming agent tank 3 of an electric vacuum cleaner according to a third technical means, and a rubber lid 10 is attached to the air intake port 9. The lid 10 is provided with a pinhole 11 which is closed when the lid 10 is not deformed. When the electric vacuum cleaner is operated, the inside of the dust box becomes negative pressure, and the negative pressure is also transmitted to the defoaming agent tank 3 through the defoaming agent supply pipe 4 to deform the lid 10 of the air intake 9. Due to the deformation, the pinhole 11 provided in the lid 10 is opened, the outside air is sucked into the defoaming agent tank 3, and the defoaming agent in the defoaming agent tank 3 is supplied into the dust box. Then, it is mixed with the liquid in the dust box to suppress its foaming.

FIG. 4 shows the diaphragm 12 provided in the defoaming agent tank 3 according to the fourth technical means. When the vacuum cleaner is operated and the inside of the dust box becomes a negative pressure, the negative pressure becomes the defoaming agent supply pipe 4. Through this, the defoaming agent tank 3 and the diaphragm 12 provided in the defoaming agent tank 3 are contracted and deformed, and the defoaming agent in the defoaming agent tank 3 is pushed out and supplied into the dust box. Then, it is mixed with a liquid containing a foaming liquid such as detergent in the dust box to suppress the foaming.

FIG. 5 shows a floor nozzle 1 according to a fifth technical means.
3 shows the defoaming agent tank 3 provided on the bottom of which a spherical lid 14 is rotatably provided. When the floor nozzle 13 is operated on the floor surface, the spherical lid 14 rotates due to friction with the floor surface. At that time, since the surface is wet with the defoaming agent in the defoaming agent tank 3, the defoaming agent on the surface is transferred to the floor surface and dispersed in the liquid on the floor surface when the friction with the floor surface occurs. Can be made.

[0021]

As described above, according to the first technical means, the electric vacuum cleaner according to the present invention uses the elastic body such as rubber from the opening end 5 of the defoaming agent supply pipe 4 provided at the intake port 2 of the dust box 1. By mixing the defoaming agent into the inhaled sewage or the like through the pinhole 7 of the lid body 6 that is formed, the inhalation of the sewage or the like in the dust box 1 can be surely prevented from being foamed, and thus the generated bubbles Is reliably sucked into the motor fan and further prevented from leaking out of the body of the electric vacuum cleaner.

In the vacuum cleaner according to the second technical means, the defoaming agent tank 3 is provided through the intake port guide 8 made of a sintered body of lipophilic resin provided at the intake port 2 of the dust box 1.
By mixing the antifoaming agent therein with the liquid in the intake air, there is an effect that the foaming is surely suppressed.

Further, the vacuum cleaner according to the third technical means is in an open state only when the lid body 10 made of an elastic material such as rubber provided in the air intake 9 of the defoaming agent tank 3 is deformed. By providing the pinhole 11 which becomes, the defoaming agent can be supplied into the dust box 1 only while the vacuum cleaner is in operation, and the wasteful defoaming agent supply to the dust box 1 can be reliably prevented when the vacuum cleaner is stopped. have.

In the vacuum cleaner according to the fourth technical means, the diaphragm 12 provided in the defoaming agent tank 3 contracts and deforms the diaphragm 12 only while the vacuum cleaner is in operation, so that the defoaming agent in the defoaming agent tank 3 is removed. This has the effect of reliably preventing foaming of the liquid supplied into the dust box and sucked into the dust box.

In the electric vacuum cleaner according to the fifth technical means, by using the floor nozzle 13, the defoaming agent tank 3 provided in the floor nozzle 13 is provided with the spherical lid 14 at the bottom of the defoaming agent tank 3 to the floor. Since the defoaming agent is supplied to the surface, the liquid containing the detergent and the like on the floor surface is mixed with and dispersed by the defoaming agent before being sucked into the floor nozzle 3, and the foaming thereof is surely prevented. Have.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a first embodiment of the electric vacuum cleaner according to the present invention.

FIG. 2 is a schematic cross-sectional view of an intake port portion of a dust box of a second embodiment of the electric vacuum cleaner according to the present invention.

FIG. 3 is a schematic sectional view of a defoaming agent tank portion of a third embodiment of the vacuum cleaner according to the present invention.

FIG. 4 is a schematic view of a defoaming agent tank portion of a fourth embodiment of the vacuum cleaner according to the present invention.

FIG. 5 is a schematic sectional view of a floor nozzle portion of a fifth embodiment of the electric vacuum cleaner according to the present invention.

FIG. 6 is a schematic sectional view of a conventional vacuum cleaner.

[Explanation of symbols]

 1 Dust Box 2 Intake Port 3 Defoamer Tank 4 Defoamer Supply Pipe 5 Open End 6,10 Lid 7, 11, 14 Pinhole 8 Intake Guide 9 Air Intake 12 Diaphragm 13 Floor Nozzle

Claims (5)

[Claims] 1. A defoaming agent supply pipe for supplying an antifoaming agent from the tank to the dust box is connected to the tank, and the defoaming agent supply pipe is connected to the tank. An end is provided with an opening at the intake port of the dust box, and an opening at the intake port of the defoaming agent supply pipe is provided with a lid made of an elastic material such as rubber having a pinhole that is closed when no pressure is applied. Vacuum cleaner. 2. An electric cleaning system in which an intake port guide made of a sintered body of lipophilic resin is provided at an intake port of a dust box, and an open end of a defoaming agent supply pipe connected to a defoaming agent tank is connected to the intake port guide. Machine. 3. An electric vacuum cleaner provided with a lid body made of an elastic material such as rubber having a pinhole that is closed when no pressure is applied to the air intake port of the defoaming agent tank. 4. An electric vacuum cleaner in which a defoaming agent tank is provided with a diaphragm that expands and contracts according to a change in pressure inside the dust box. 5. An electric vacuum cleaner comprising a floor nozzle provided with a defoaming agent tank, and a rotatable spherical lid provided below the tank.