JPH09234174A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the surface area of dust-catching water without enlarging a dust-catching water tank, in that in which the dust included in the sucked suction air is caught by water, by providing both with a nearly cylindrical dust-catching water tank for storing dust-catching water and with a rotating mechanism for rotating the dust-catching water, inside a vacuum cleaner body. SOLUTION: When a water-tank rotating motor 27 is operated to turn a dust- catching water tank 26, the dust-catching water 31 receives a centrifugal force, and a water wall is formed to the inside wall of the dust-catching water tank 26. In this condition, when a suction motor 29 is operated, the suction air including dust is introduced from the suction port connected to a suction port 32 to a swirl-flow generating part 33, and is sent out through a swirl-flow outlet 33a and descends while swirling along the water wall inside the dust-catching water tank 26, and after reached the bottom part, it is returned and introduced to the discharge port 34 of the dust-collecting chamber. Meanwhile, the dust included in the suction air is swirled together with the air inside the dust-catching water tank 26, and receives a centrifugal force due to the swirling motion, and is pressedly brought into contact with the water wall formed in the inside wall of the dust-catching water tank 26, and the dust is caught by the dust-catching water 31 inside the water tank 26.

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, and more particularly to a wet electric vacuum cleaner in which sucked dust is captured by water.

[0002]

2. Description of the Related Art In general, a dry type vacuum cleaner that collects dust with a filter such as paper or non-woven cloth is used to collect dust by passing air containing dust that is sucked into water stored in a water tank in advance. 2. Description of the Related Art There are known electric vacuum cleaners and wet-type vacuum cleaners in which intake air containing sucked dust is made to collide with water to capture dust. Unlike the dry type vacuum cleaner, this wet type vacuum cleaner does not cause local filter clogging and can capture fine dust.

As a typical example, Japanese Patent Laid-Open No. 5-130956
An example of the electric vacuum cleaner disclosed in Japanese Patent Publication is shown in FIG. In this conventional example, after the intake air containing the sucked dust is hit against the water, the water and the intake air are passed through a narrow path to capture the dust.

In the figure, 1 is a main body case, 2 is a water pan, 3 is water, 4 is a suction motor, 5 is a centrifugal fan, 6 is an intake port,
Reference numeral 7 is a water separator, 8 is an air passage, 9 is an exhaust port, 11 is a partition wall, 12 is a rib, and 13 is a first
It is a chamber, 16 is a second chamber, and 17 is an inlet wall.

[0005]

However, in such a conventional wet type vacuum cleaner, the air bubbles generated by the intake air passing through the water prevent contact between the dust and the water, and the intake air passes through the narrow path together with the water. There has been a problem that the basic performance of the electric vacuum cleaner is impaired, that is, the suction force is reduced due to the pressure loss that occurs during the cleaning. Further, there is a problem that the time when the dust and the water are in contact is only during the time when the intake air is in the water, which is a very short time. Furthermore, since the device such as the suction motor 4 is arranged on the water pan 2, when the water 3 containing dust is drained, the suction motor 4 which is a heavy object is lifted to remove the water pan 2. It was necessary and very laborious.

Further, in the wet type vacuum cleaner in which the intake air containing the sucked dust is made to collide with the surface of the water to collect the dust, there is a problem that the surface area of the dust-collecting water which is in contact with the dust is small.
One possible solution to this problem is to increase the surface area of the dust-collecting water by increasing the bottom area of the water tank.However, the size of the vacuum cleaner body is increased and the weight of the vacuum cleaner body is increased due to the increase in the amount of dust-collecting water. However, there is a problem in that operability is lacking.

As another dust collecting method, there is a cyclone cleaner using a swirling flow which does not require a dust-collecting paper bag like the wet type vacuum cleaner. This is to separate and collect dust from the air by utilizing the centrifugal force received by the dust on the swirling flow, but this method makes it difficult to separate fine dust from complete air. There is a problem that it is difficult to remove the dust from the intake air due to re-scattering of the collected dust.

On the other hand, various improvements have been made to improve the dust collecting performance, but problems such as a complicated structure and an increase in size have occurred.

An object of the present invention is to solve the above problems.

[0010]

The electric vacuum cleaner of the present invention comprises:
In order to achieve the above object, the invention according to claim 1 is a wet type electric vacuum cleaner in which intake air containing sucked dust is captured by water. In the cleaner body, an intake port and a capture port communicating with the intake port are provided. It is characterized by comprising a substantially cylindrical dust-collecting water tank for storing dust water, a rotating mechanism for rotating the dust-collecting water in the dust-collecting water tank so as to increase the surface area thereof, and a suction motor. is there.

The invention according to claim 2 is characterized in that the rotating mechanism comprises a water tank rotating motor for rotating the dust collecting water by rotating the dust collecting water tank.

Further, the invention according to claim 3 is characterized in that a swirling flow generating portion for swirling the intake air along the water wall is provided in an intake passage between the intake port and the dust collecting water tank. To do.

In addition, the invention according to claim 4 is characterized in that the rotation direction of the swirl flow generated in the swirl flow generation section and the rotation direction of the dust collection water tank are the same direction. is there.

In addition, the invention according to claim 5 is characterized in that an annular water leakage prevention wall protruding above the inner wall of the dust collecting water tank is provided.

In addition, the invention according to claim 6 is provided with a water level detecting means for detecting the water level of the dust collecting water stored in the dust collecting tank, and an alarm means for issuing an alarm when the water level is abnormal. It is characterized by.

In addition, in the invention according to claim 7, the cleaner main body opens and closes a substantially concave storage portion for storing the dust collection water tank, the water tank rotation motor, and the suction motor. The dust collecting water tank is detachably attached to the water tank rotating motor.

With the above structure, the invention according to claim 1 is
Inside the cleaner body, an intake port, a substantially cylindrical dust collection water tank that communicates with the intake port to store dust collection water, and a rotation that rotates the dust collection water in the dust collection water tank so that its surface area increases Since the mechanism and the suction motor are provided, it is possible to move the dust collecting water tank along the inner wall of the dust collecting water tank by the centrifugal force due to the rotation and form a water wall that covers the inner wall of the dust collecting water tank. As a result, the surface area of the dust collecting water can be increased without increasing the amount of the dust collecting water and without enlarging the dust collecting water tank.

Further, in the invention according to claim 2, since the rotating mechanism comprises a water tank rotating motor for rotating the dust collecting water by rotating the dust collecting water tank, the structure can be simplified. .

Further, in the invention according to claim 3, since the swirl flow generating portion for swirling the intake air along the water wall is provided in the intake passage between the intake port and the dust collecting water tank, the dust itself Can be pressed against the inner wall of the water tank covered with the water film by the centrifugal force due to the swirling of the intake air, and the contact time between the water for dust collection and the intake air containing the dust can be increased.

In addition, in the invention according to claim 4, since the rotation direction of the swirl flow generated in the swirl flow generation part and the rotation direction of the dust collection water tank are the same direction, the inner wall of the dust collection water tank is A swirling flow can be generated while keeping the water wall stable.

In addition, according to the invention of claim 5, since an annular water leakage prevention wall projecting above the inner wall of the dust collection water tank is provided, the water leakage prevention wall prevents the dust collection water from the dust collection water tank. Overflow can be prevented.

In addition, the invention according to claim 6 is provided with a water level detecting means for detecting the water level of the dust collecting water stored in the dust collecting tank, and an alarm means for issuing an alarm when the water level is abnormal. , Water level abnormality is detected by the water level detection means,
In the case of an abnormality, the user can be notified by an alarm means.

In addition, in the invention according to a seventh aspect, the cleaner main body opens and closes the accommodating portion for accommodating the dust collecting water tank, the water tank rotating motor, and the suction motor, and the accommodating portion. It consists of a lid part, and the dust collection water tank is detachably attached to the water tank rotation motor, so by opening and closing the lid part, the dust collection water tank can be taken in and out from the cleaner body, and the dust collection water tank The dust collecting water can be supplied and / or the dust collecting water can be drained. Further, since a heavy object such as a motor is not placed on the lid, the user can easily open and close the lid.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an electric vacuum cleaner of the present invention will be described in detail below with reference to FIGS. 1 to 5. FIG. 1 is a configuration diagram of an electric vacuum cleaner according to the present embodiment.
3 is an overall perspective view, FIG. 3 is a configuration diagram of the lid portion shown in FIG. 1, and FIG. 4 is a perspective view of the connecting plate shown in FIG. 5A and 5B are views for explaining the state of the dust-collecting water in the dust-collecting water tank, FIG. 5A is a diagram showing a state when the dust-collecting water tank is stopped, and FIG. It is a figure which shows the state of.

As shown in FIGS. 1 and 2, the cleaner main body 21, which is the outer wall of the electric vacuum cleaner according to this embodiment, is composed of a substantially concave storage portion 22 and a lid portion 23. A dust collection chamber 24 and a suction chamber 25 are provided inside thereof.

In the dust collection chamber 24, a dust collection water tank 26 which is a dust collection container, a water tank rotation motor 27, and the dust collection water tank 26.
A connecting plate 28 for connecting the rotating shaft 27a of the water tank rotating motor 27 is provided, and a suction motor 29 is provided in the suction chamber 25.

An annular water leakage prevention wall 30 is provided on the inner wall of the dust catching water tank 26, and the dust catching water 3 is provided in the dust catching water tank 26.
1 is watered.

As shown in FIGS. 1 and 3, the lid 23 has
An intake port 32 connected to a hose having an intake port or an extension pipe to guide intake air containing dust into the cleaner body 21, and the intake port 32.
Swirl flow generating portion 33 provided in the passage between the dust collecting water tank 26, the dust collecting chamber exhaust port 34 provided above the dust collecting water tank 26, the dust collecting chamber exhaust port 34 and the suction chamber 25. A suction air duct 35 connecting the two is provided. Further, the lid 23 is provided with a water level detecting means 36 above the dust catching water tank 26 for detecting the water level of the dust catching water 30. It should be noted that, in FIG. 1, reference numeral 37 designates an intake air from which dust is removed from the suction chamber 25, as a cleaner main body 21
It is an exhaust port that exhausts to the outside.

The connecting plate 28 has a convex portion 38 as shown in FIG. 4 on the upper surface thereof, and a concave portion (not shown) corresponding to the convex portion 38 on the outer bottom portion of the dust collecting water tank 26. By installing the dust catching water tank 26 on the connecting plate 28, the convex portion 38 and the concave portion are engaged with each other, and the water tank rotating motor 27 and the dust catching water tank 26 are connected. Further, the dust collecting water tank 26 has a structure that can be taken out by opening the lid 23.

Next, the operation of the electric vacuum cleaner according to this embodiment will be described. It should be noted that the lid 23 is opened in advance and the dust collecting water tank 26 is taken out from the inside of the cleaner body 21, the dust collecting water 31 is supplied into the dust collecting water tank 26 and returned to the inside of the cleaner body 21, and the lid portion 23 is removed. Close and perform the following operations.

First, the water level detecting means 36 provided on the lid portion 23 measures the distance to the water surface of the dust collecting water 31 to detect the initial water amount. As a result, the water wall formed on the inner wall of the dust catching water tank 26 when the dust catching water tank 26 rotates becomes
The user is informed of whether or not the amount of water does not exceed 0, for example, by turning on / off an alarm means (not shown) including a buzzer or a light emitting body provided in the cleaner body 21.

The water level detecting means 36 is used to measure the height of the water wall during rotation of the dust collecting water tank 26, and the motor 27 for rotating the dust collecting water tank 27 is rotated so that the water wall does not exceed the water leakage prevention wall 30. By controlling the rotation speed (keeping the rotation speed at which the water wall reaches the lower end of the water leakage prevention wall 30), water leakage can be prevented even when the initial water level is not appropriate. In this case, it is possible to prevent water leakage even if the dust water tank 26 is not provided with the water leakage prevention wall 30.

After the detection of the amount of dust collection water is completed, the water tank rotation motor 27 is operated. The aquarium rotation motor 27
The rotation shaft 2 of the aquarium rotation motor 27
The connecting plate 28 fixed to 7a and the dust catching water tank 26 installed on the connecting plate 28 are connected by the convex portion 38 on the connecting plate 28 and the concave portion (not shown) on the outer bottom portion of the dust catching water tank 26. Therefore, the rotational force of the water tank rotation motor 27 is transmitted to the dust collection water tank 26, and the dust collection water tank 26 rotates.

When the dust collecting water tank 26 rotates, the dust collecting water 31 receives a centrifugal force and forms a water wall on the inner wall of the dust collecting water tank 26. That is, the state shown in FIG. 5A is changed to the state shown in FIG. After that, by operating the suction motor 29, the suction air containing dust is swirled from the suction port of the hose or the extension pipe connected to the suction port 32 of the cleaner body 21, and the swirling flow generation unit 33 in the cleaner body 21. Be led to. The intake air containing dust from the swirl flow outlet 33a of the swirl flow generation unit 33 descends while swirling along the water wall formed on the inner wall of the dust collection water tank 26 in the dust collection chamber 23 and reaches the bottom. After that, it is folded back and guided to the dust collection chamber exhaust port 34. The dust contained in the intake air swirls together with the air in the dust collecting water tank 26, receives the centrifugal force due to the swirling motion, and comes into contact with the water wall formed on the inner wall of the dust collecting water tank 26 so as to be pressed against the water wall. Two
Dust is collected by the water 31 for dust collection in 6. Exhaust port 3 of the dust collection chamber
4 is connected to a suction chamber 25 in which a suction motor 29 is provided through a suction air passage 35, and the intake air from which dust has been removed passes through the suction chamber 25 and is then discharged from the exhaust port 37 of the cleaner body 21 to the outside. Is released.

Dust collecting water 31 which has been cleaned and has collected dust
When throwing away, the lid 23 is opened, and only the dust catching water tank 26 is removed from the main body 21 and the dust catching water 31 from which dust has been caught is thrown away. After throwing away, clean dust collecting water 31 is supplied, the dust collecting water tank 26 is installed in the cleaner body 21, and the lid portion 23 is closed.

As described above, in the electric vacuum cleaner according to the present embodiment, the suction port and the suction port 32 are provided in the cleaner body 21.
A substantially cylindrical dust collecting water tank 2 for communicating with and storing the water 31 for collecting dust.
6 and the water tank which rotates the dust collecting water tank 26 and moves the dust collecting water 31 along the inner wall of the dust collecting water tank 26 by the centrifugal force thereof to form a water wall covering the inner wall of the dust collecting water tank 26. Since the rotation motor 27 and the suction motor 29 are provided, the surface area of the dust catching water 31 can be increased without increasing the amount of the dust catching water 31 and without enlarging the dust catching water tank 26. it can.

Therefore, the intake air containing dust and the water for collecting dust 3
The contact area with 1 can be increased, and the dust collection performance can be improved. Moreover, since the dust is captured by water, the captured dust is not re-scattered, and the intake air can be captured without passing through the water.
The occurrence of pressure loss and the deterioration of dust collection performance due to air bubbles will not occur.

Further, since the swirl flow generating section 33 for swirling the intake air along the water wall is provided in the intake passage between the intake port 32 and the dust collecting water tank 26, the dust itself is swirled by the intake air. Dust collection tank 2 covered with water film by centrifugal force
6 can be pressed against the inner wall, and the contact time between the dust collecting water 31 and the intake air containing dust increases.

Therefore, the dust collecting performance is further improved.

Further, since the rotation direction of the swirl flow generated in the swirl flow generation section 33 and the rotation direction of the dust collection water tank 26 are the same, the water wall inside the dust collection water tank 26 is in a stable state. A swirling flow can be generated as it is.

In addition, since the annular water leakage prevention wall 30 protruding above the inner wall of the dust collection water tank 26 is provided, the water leakage prevention wall 30 prevents the dust collecting water 31 from overflowing from the dust collection water tank 26. it can.

Therefore, the dust-collecting water 31 for the motor, etc.
Can be prevented and the intake air passage 35 can be prevented from becoming dirty.

In addition, since the water level detecting means 36 for detecting the water level of the dust collecting water 31 stored in the dust collecting water tank 26 and the alarm means for issuing an alarm when the water level is abnormal are provided,
The water level abnormality can be detected by the water level detection means, and the user can be notified by the alarm means in the event of an abnormality.

Therefore, the user can recognize the abnormal water level in advance, and it is possible to reliably prevent the dust collecting water 31 from entering the motor or the like and the intake air passage 35 from being polluted.

In addition, the cleaner main body 21 has a substantially concave storage portion 22 for storing the dust collection water tank 26, the water tank rotation motor 27, and the suction motor 29, and the storage portion 2.
Since the dust collecting water tank 26 is detachably attached to the water tank rotating motor 27, the dust collecting water tank 26 is opened and closed by opening and closing the lid portion 23. The water tank 26 can be taken in and out, and the dust collecting water 31 can be easily supplied with water and / or the dust collecting water 31 can be drained. Moreover, since a heavy object such as a motor is not arranged on the lid portion 23, the user can easily open and close the lid portion 23.

Therefore, the labor of the user at the time of exchanging the dust collecting water 31 can be reduced.

In the above-described embodiment, the dust catching water 31 is rotated by rotating the dust catching water tank 26. However, for example, a screw is provided at the bottom of the dust catching water tank to rotate only the dust catching water. Good structure. However, in this case, for example, it is necessary to connect a rotating shaft of a motor for rotating the screw to the screw by providing a through hole in the bottom of the dust collecting water tank, and to consider water leakage from the bottom. However, the structure becomes complicated.

Further, although the convex portion 38 and the concave portion are used as the connecting means between the connecting board 28 and the dust collecting water tank 26, another connecting means utilizing the attractive force of the magnet can be used. Or attach a magnet to the bottom of the dust collection water tank 26,
By attaching a magnet or a metal object to the bottom of the dust collection water tank 26 or the connecting plate 28 which is paired therewith, they can be detachably connected.

[0049]

As described above, according to the first aspect of the present invention, since the dust collecting water tank is rotated by the rotating mechanism and the water wall for the dust collecting water is formed on the inner wall of the dust collecting water tank, the intake air containing dust and It is possible to increase the contact area with the water for dust collection, and improve the dust collection performance. Moreover, since the dust is captured by water, the captured dust is not re-scattered, and the intake air can be captured without passing through the water. The decrease will not occur.

In the invention according to claim 2, the rotating mechanism comprises a water tank rotating motor for rotating the dust collecting water by rotating the dust collecting water tank. Therefore, the structure can be simplified. .

Further, according to the third aspect of the invention, since the swirling flow generating means swirls the intake air containing dust along the water wall formed in the inner wall of the dust collecting water tank, the dust is pressed against the water wall by centrifugal force. It is possible to make dust, and it is possible to increase the contact time between the intake air containing dust and the water for dust collection. Therefore, the dust collection performance can be further improved.

In addition, in the invention according to claim 4, since the rotating direction of the swirling flow and the rotating direction of the dust collecting water tank are the same,
A swirling flow can be generated while keeping the water wall of the inner wall of the dust collection tank stable.

In addition, in the invention according to claim 5, since the annular water leakage prevention wall is provided, it is possible to prevent the dust collecting water from overflowing from the dust collecting water tank, and to prevent the dust collecting water from entering the motor or the like. It is possible to prevent the exhaust path from being polluted.

In addition, since the invention according to claim 6 is provided with the water level detecting means and the alarm means, the user can recognize the abnormality of the water level in advance, and the dust collecting water enters the motor or the like and the exhaust gas is exhausted. It is possible to reliably prevent the route from being polluted.

In addition, in the invention according to claim 7, since the dust collecting water tank can be attached to and detached from the water tank rotating motor, the dust collecting water tank can be put in and taken out of the cleaner body by opening and closing the lid portion. It is possible to easily supply the water for collecting dust to the water tank and drain the water for collecting dust. Further, since a heavy object such as a motor is not placed on the lid, the user can easily open and close the lid.

Therefore, the labor of the user at the time of exchanging the dust collecting water can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an electric vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the overall structure.

FIG. 3 is a configuration diagram of a lid portion shown in FIG.

FIG. 4 is a configuration diagram of a connecting board shown in FIG. 1.

5A and 5B are views for explaining a state of the dust collecting water in the dust collecting water tank shown in FIG. 1, FIG. 5A is a diagram showing a state when the dust collecting water tank is stopped, and FIG. It is a figure which shows the state at the time of rotation of a dust tank.

FIG. 6 is a configuration diagram showing a conventional electric vacuum cleaner.

[Explanation of symbols]

 21 Vacuum Cleaner Main Unit 22 Storage Part 23 Lid Part 26 Dust Collection Water Tank 27 Water Tank Rotation Motor (Rotation Mechanism) 29 Suction Motor 30 Water Leakage Prevention Wall 31 Dust Collection Water 32 Intake Port 33 Swirling Flow Generation Section 36 Water Level Detection Means 37 Exhaust Mouth 38 Convex part (connecting means)

Claims (7)

[Claims] 1. A wet electric vacuum cleaner for collecting intake air containing sucked dust with water, wherein a vacuum cleaner body has an intake port and a substantially cylindrical type for communicating with the intake port and storing water for collecting dust. An electric vacuum cleaner comprising: a dust-collecting water tank, a rotating mechanism for rotating the dust-collecting water in the dust-collecting water tank so as to increase the surface area thereof, and a suction motor. 2. The electric vacuum cleaner according to claim 1, wherein the rotating mechanism includes a water tank rotating motor that rotates the dust collecting water by rotating the dust collecting water tank. 3. The electric cleaning apparatus according to claim 1, wherein a swirl flow generating unit that swirls the intake air along the water wall is provided in an intake passage between the intake port and the dust collection water tank. Machine. 4. The vacuum cleaner according to claim 2, wherein the rotation direction of the swirl flow generated in the swirl flow generation section and the rotation direction of the dust collection water tank are the same direction. 5. The vacuum cleaner according to claim 1, further comprising an annular water leakage prevention wall projecting above an inner wall of the dust collection tank. 6. A water level detection means for detecting the water level of the water for dust collection stored in the dust collection tank, and an alarm means for issuing an alarm when the water level is abnormal.
Vacuum cleaner as described. 7. The cleaner main body includes a substantially concave storage portion for storing the dust collection water tank, a water tank rotation motor, and a suction motor, and a lid portion for opening and closing the storage portion. The vacuum cleaner according to claim 1, wherein the water tank is detachably attached to the motor for rotating the water tank.