JPH02134198A - Dehydrator - Google Patents

Abstract

PURPOSE:To eliminate the generation of useless vibration when washing materials are put aside in a dehydration tank by connecting the dehydration tank to an outer tank by a rotating support part and supporting the outer tank by a cabinet in such a manner as to be movable on a plane surface nearly right-angle to the rotating shaft of the dehydration tank. CONSTITUTION:A rotating driving part 210 is mounted to the shaft of a rubber roller 207 which is one of three rubber rollers 207-209 supporting the upper part of a dehydration tank 201, and the rotating force is transmitted to the dehydration tank 201 by the rubber roller 207. An outer tank 203 is integrally formed around the dehydration tank 201 and suspended in a cabinet 202 by wires 211-216. As the outer tank 203 is mounted in such a manner as to be freely movable on a plane surface nearly right-angled to the rotating shaft of the dehydration tank 201, the smooth rotation can be achieved without generating useless vibration and the rotating number can be easily increased. When the rotating number is increased, the drying by centrifugal force is started.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to vibration prevention of a dewatering device using the action of centrifugal force used in electric washing machines and the like.

<Prior Art> A conventional dehydrating device for a washing machine has a cylindrical dehydrating tank with a vertical bottom connected to a rotary drive unit such as a mote by a rubber-like support at the bottom.

For dehydration, the laundry was placed in a dehydration tank and rotated at high speed to remove all the moisture from the laundry using centrifugal force.

<Problems to be Solved by the Invention> However, in the dehydration apparatus configured as described above, the washed items immediately after being placed in the dehydration tank contain a large amount of water and therefore have a considerable weight. If the laundry is loaded unevenly, the center axis of the rotational moment when the spinner is transferred to the dehydration tank will be eccentric. If this eccentricity is large, vibrations occur when the dehydration tank begins to rotate, often resulting in the rotation speed not increasing.When this vibration is particularly severe, the dehydration tank collides with the outer tank, making it impossible to dewater properly. If left in this condition, the motor may become overloaded and cause a malfunction.In such a case, there was a problem in that the laundry had to be placed in the spinner tub again in a position where it would not vibrate. .

The present invention was invented to solve the above-mentioned problems, and an object of the present invention is to provide a new dewatering device.

Means for Solving the Problems> In order to achieve the above object, the present invention rotates a dehydration tank containing laundry, and uses centrifugal force to remove water contained in the laundry. In a dehydration device for cutting and dewatering, the dehydration device consists of a cabinet, an outer tank, and the dehydration tank from the outside, and the dehydration tank has a rotation drive unit for rotating around the center of the bottom part, and a rotation drive unit for rotating once. a support part, the dehydration tank is connected to the outer tank by the rotation support part, and the outer tank is supported on the cabinet so as to be movable in a plane substantially perpendicular to the rotational axis of the dehydration tank; The present invention provides a dewatering device having the above structure, whereby the above object is achieved.

For the bottom of the dehydration tank, it is effective to support the center of the bottom with a rotating bearing, and for the top of the dehydration tank, at least three rotatable flat rollers are attached to the outer tank and supported by the cabinet. It is.

Furthermore, a rotation drive unit for rotating the dehydration tank may be coupled to at least one rotating shaft of the planar roller that supports the dehydration tank to transmit rotational power.

In addition, the bottom of the dehydration tank is supported by a rotation bearing at the center of the bottom, and the top of the dehydration tank has a plurality of permanent rings arranged in an annular shape on the outer periphery of the top so that the outer sides have the same polarity. It is also preferable to arrange a plurality of permanent magnets in an annular shape so that the outer side has the same polarity as the above-mentioned polarity at a position facing the magnet at the same height as the above-mentioned permanent magnet at the inner upper part of the outer tank.

In this case, an electromagnet can also be used as the magnet attached to the outer tank.

In the dewatering device configured as described above, the rotating shaft of the dehydrating tank is not fixed and is free to move, so by putting laundry in it, the center axis of the rotational moment can be adjusted. Even if the rotation axes are misaligned, they will naturally align and rotate. That is, as shown in FIG. 3, when there is no laundry in the tub, the rotation axis +01 of the spin-drying tub 100 coincides with the center axis of the rotational moment of the spin-drying tub, but by putting the laundry 102 in, the rotational moment is reduced. If the central axis shifts to position 103, the dehydration tank 100 rotates 1
A circular orbit 104 centered around the central axis 103 of the rotational moment with the same period as rotating around 111101.
If the rotating shaft 101 can be rotated along the rotation axis, the center position of the rotational moment will hardly move, and unnecessary vibrations can be prevented.

Next, as a method of supporting the rotating dehydration tank, the bottom of the dehydration tank is supported by a rotation bearing at the center position 14,
This alone cannot prevent vibrations caused by the eccentricity of the central axis of rotational moment caused by loading laundry. In the present invention, three or more flat rollers or the repulsive force of a magnet are used for the upper part of the dehydration tank. The planar roller method directly supports the dewatering tank. In the method using magnetic repulsion, a magnet attached along the circumference of the dehydration tank and a circumferential magnet fixed to the exterior structure are arranged so that the same poles face each other, creating a gap that allows light to pass through. If the center axis of the rotational moment is eccentric and vibration occurs when the dehydration tank rotates, if the magnet in the dehydration tank approaches the magnet in the outer tank, the distance between the two will increase. A repulsive force is generated that is inversely proportional to the square of the dehydration tank, pushing the dehydration tank back toward the center. In this way, even if there is one center of the central axis of rotational moment.

A force acts to keep the rotation of the dehydration tank in the center position.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 11a) is a top view showing an embodiment of the present invention, and FIG. 1(b) is a side view thereof.

The dehydration device of this embodiment is a cabinet) 202. Outer tank 203
．． It consists of a dehydration tank 201, and an outer tank 203 is a supporting frame, but it does not necessarily have to be cylindrical, and these will be collectively referred to as the outer tank.

The dehydration tank 20+ is supported by an outer tank 203 at the bottom and top. The bottom portion 204 is supported at its center by a rotation bearing 206 via a rubber-like cushioning material 205 . The upper part of the dehydration tank 20+ is supported by 31 hard rubber rollers 207 to 209 attached to the outside [203]. Dewatering occurs when the three rubber rollers are completely fixed in the outer tank 203! 20+ rotation resistance may increase or rattling may occur, so at least 1
It is necessary to press the two rubber rollers against the dewatering tank 201 using springs.

Next, a rotation drive unit such as a motor is connected to the bottom 2 of the dehydration tank 201.
It is common to attach the rotating shaft to the center of 04,
In this embodiment, a rotation drive unit 21 (J) is attached to the shaft of a rubber roller 207, which is one of the three rubber rollers 207 to 209 that supports the upper part of the dewatering plate 201.
07 transmits rotational force to the dehydration tank 20+. Outer tank 20
3 is integrated so as to surround the dehydration tank 20+,
It is suspended from the cabinet 202 by wires 211-216. In this way, the outer tank 203 is the dehydration tank 20
By allowing free movement on a plane substantially perpendicular to the + rotation axis, smooth rotation can be obtained without unnecessary vibrations, and the rotation speed can be easily increased. When the rotation speed increases, dehydration begins due to centrifugal force, the weight of the laundry containing water rapidly decreases, the eccentricity of the center axis of the rotation moment of the dehydration tank 201 decreases, and the movement of the outer tank 203 also decreases. Decrease.

Next, a second embodiment is shown in FIG. Figure 2 ia) is the second
FIG. 2(b) is a top view of the embodiment, and FIG. 2(b) is a side view thereof.

The dehydration device of this embodiment is a cabinet) 309. Outer tank 302
．． It consists of a dehydration tank 301.

The dewatering tank 301 is connected to a rotary drive unit 305 via a rubber-like support base at the center portion 303 of the bottom thereof, and by a rotary shaft 304, and the upper part thereof is supported by the repulsive force of a magnet, which will be described below.

A large number of magnets 306 are arranged in an annular shape around the dehydration tank 301, and the magnets 306 are attached so that the outer polarities of all the magnets 306 are the same. In this embodiment, it is the north pole. It is more effective if the magnets 306 are arranged without any gaps as shown in FIG. 2(a), but even if there are gaps, there is no particular problem as long as the gaps are smaller than the size of the individual magnets. Similarly, a large number of magnets 307 are arranged in an annular shape inside the outer tank 302,
These magnets are attached so that the inside polarities are all Ni, which is the same as the outside polarity of the magnet 306 of the dehydration tank 301. It is more effective if the magnets 307 are arranged without any gaps, as in the case of the magnets 306, but even if there are gaps, there is no problem as long as the gaps are smaller than the size of the individual magnets.

A magnet 306 attached to the outside of the dehydration tank 301 and a magnet 307 attached to the inside of the outer tank 302 are placed facing each other with a suitable gap 308 in between. Dehydration tank 301.Magnets with the same polarity arranged in a circular pattern. Since it is attached to the outer tank 302, the magnets repel each other and the dehydration tank 301
The force that holds it in the center position will cause it to move. That is,
When the spindle 301 tries to vibrate during rotation due to eccentricity of the center axis of the rotation moment caused by the laundry, the magnet 3
06 approaches the magnet 307, the distance is 2
A repulsive force is generated that is inversely proportional to the power of the dehydration tank, and the force pushing the dehydration tank back toward the center becomes extremely large. On the other hand, at any part 180 degrees opposite to the center of the parts that are close to each other, the distance between the magnets increases, and as a result, the repulsive force between the magnets decreases rapidly in inverse proportion to the square of the distance. Therefore, the difference between these two repulsive forces becomes a force that pushes the dehydration tank 301 back to the center position, and the dehydration tank 301 can be held in the center position even if the center axis of the rotational moment is eccentric due to the way the laundry is loaded. .

Note that in this embodiment as well, the outer tank 3 is
02 is suspended from a cabinet 309 by a wire, so that the outer tank 302 can move in a plane substantially perpendicular to the axis of rotation of the dehydration tank 301. Therefore, since the dehydration tank 301 can be rotated using the center axis of rotational moment as the rotation axis, smooth rotation can be performed and the number of rotations can be easily increased.

As the rotational speed increases, dewatering begins due to centrifugal force, the weight of the swamp material decreases rapidly, the eccentricity of the center axis of the rotational moment decreases, and the movement of the outer tank 302 also decreases.

As explained above, since the laundry contains a large amount of water at the start of spin-drying, the eccentricity of the center axis of the rotational moment due to the way the laundry is loaded is due to the eccentricity of the center axis when the spin-drying tank 301 starts rotating. is the largest, and as the rotational speed increases, the water in the laundry is removed, and the eccentricity of the center of the rotational moment, M, rapidly decreases. Therefore, a large repulsive force is required to suppress vibration only at the beginning of rotation, and after the rotational speed increases by one rotation, such repulsive force is hardly required. Under such circumstances, it is conceivable to use electromagnets instead of permanent magnets. That is, the outer tank 30
The magnet 307 attached to 2 is an electromagnet, and a large current is passed through the electromagnetic coil so that it has the same polarity as the outside polarity of the magnet 306 of the dehydration tank 301 only at the beginning of rotation. The advantage of using electromagnets is that the strength of the magnetic field can be controlled as needed.

<Effects of the Invention> Since the present invention is configured as described above, even if the laundry is placed in the dehydration tank in an uneven manner, unnecessary vibrations will not occur, and the laundry can be reloaded. Since there is no need to restart the dehydrator, the usability of the dehydrator is greatly improved.

[Brief explanation of the drawing]

FIG. 1(a) is a top view showing the first embodiment of the present invention, FIG. 1 et al.) is a side view thereof, FIG. 2 et al.) is a top view showing the second embodiment, and FIG. is a side view thereof, and FIG. 3 is a diagram showing the rotation axis and the center axis of rotation moment when laundry is put in the dehydration tank. 201.301,100: Dehydration tank, 202°309
: Cabinet, 203.302: Outer tank, 204.3
03: Bottom, 205: Cushioning material, 206.304: Rotating bearing, 207,208°209: Rubber roller,
2+0,805: Rotation drive unit, 211,212,21
3,214°215.2] 6: Wire, 306,30
7: Magnet, 308: Gap.

Claims (1)

[Scope of Claims] 1. A dehydration device that rotates a dehydration tank containing laundry and shakes off the water contained in the laundry by the action of centrifugal force at that time to perform dehydration, the dehydration device comprising: consists of a cabinet, an outer tank, and the dehydration tank from the outside; the dehydration tank has a rotational drive part for rotating around the center of the bottom part, and a rotation support part; A dewatering device connected to an outer tank, the outer tank being supported and configured by the cabinet so as to be movable in a plane substantially perpendicular to the rotation axis of the dehydrating tank. 2. In claim 1, the bottom of the dehydration tank is supported at the center of the bottom by a rotation bearing, and the top of the dehydration tank is provided with at least three rotatable flat rollers attached to the outer tank; A dewatering device characterized in that it is supported by the above-mentioned cabinet. 3. Claim 2, characterized in that a rotation drive unit for rotating the dehydration tank is coupled to at least one rotating shaft of the flat roller that supports the dehydration tank to transmit rotational power. Dehydration equipment. 4. In claim 1, the bottom of the dehydration tank is supported at the center of the bottom by a rotation bearing, and the top of the dehydration tank is provided with an annular shape around the outer periphery of the top so that the outside has the same polarity. A plurality of permanent magnets are arranged in an annular shape at positions facing the permanent magnets at the same height on the inside upper part of the outer tank so that the outer side has the same polarity as the above-mentioned polarity. Characteristic dehydration equipment. 5. The dewatering device according to claim 4, wherein an electromagnet is used as the magnet attached to the outer tank.