WASHING MACHINE HAVING ROTATION PLATE BEING POSSIBLE LINEAR MOVEMENT

Technical Field

[1] The present invention relates to a washing machine having a rotation plate being possible linear movement, and in particular to an improved washing machine having a rotation plate being possible movement in which there is provided a rotation plate capable of generating turbulence flow in water mixed with the laundry and detergent or in liquid used for washing, with the rotation plate being rotated in a direction of the laundry for thereby obtaining a linear movement so that it is possible to generate relatively strong turbulence flow in a washing tub, and with the laundry being not contacted with the rotation plate, whereby a direct friction between the laundry and the rotation plate is prevented, and a friction force between the laundry and washing liquid is generated a lot for thereby significantly generating a washing force and decreasing a washing time.

[2]

Background Art

[3] A conventional washing machine is classified into a common washing machine which is designed to wash the laundry by generating turbulence flow in water stored in the interior of a washing machine tub based on the rotation of a rotation plate, and a drum type washing machine which is designed to wash the laundry by rotating a washing tub which is horizontally installed.

[4] In the common washing machine, since only the rotation place is rotated during the washing, the construction is simple, but the washing is performed using only the turbulence generated in the interior of the washing tub, so that the washing effect is poor. Since the laundry is directly contacted with the rotation plate, the laundry may be damaged. In the drum type washing machine, the washing is performed based on an impact force by the weight of the laundry and a friction force with an inner surface of the washing tub for thereby preventing a damage of the laundry. In this case, it is impossible to obtain a desired washing effect.

[5] In addition, the conventional washing machine is designed to discharge the water which was used for washing, so that the consumption of water increases during the washing.

[6]

Disclosure of Invention Technical Problem

[7] Accordingly, it is an object of the present invention to provide a washing machine, which overcomes the problems encountered in the conventional washing machine. In the present invention, a rotation plate performs a linear movement in water mixed with the laundry and detergent or in washing liquid in the washing tub for thereby generating stronger impact force based on a rotating turbulence, and the laundry does not directly contact with the rotation plate.

[8] It is another object of the present invention to provide a washing machine in which a rotation plate sequentially performs a linear movement at both sides, and the opposite rotation plates return to original positions based on linear turbulence impacts of water mixed with detergent or washing liquid at the time when they stop, so that left and right turbulence water flows collide with each other in the opposite direction of rotation in the interior of the washing tub for thereby increasing washing force.

[9] It is further another object of the present invention to provide a washing machine which includes a sub-tank for storing water inputted into the interior of the washing machine, so that water mixed with used detergent or washing liquid.

[10] It is still further another object of the present invention to provide a washing machine which is designed to decrease a washing time by generating a friction force a lot in water mixed with detergent or washing liquid in the laundry.

[H]

Technical Solution

[12] To achieve the above objects, there is provided a washing machine comprising a first washing tub which has a sealed inner side and is constituted to be rotatable with respect to a center shaft of a horizontal direction; a second washing tub which is constituted to receive the laundry therein and is engaged with the first washing tub in a structure rotatable with respect to the center shaft of the horizontal direction; at least one rotation plate which is constituted to be rotatable with respect to the rotary shaft of the second washing tub and is engaged at an inner side of the second washing tub; and a motor which is designed to independently drive the first washing tub, the second washing tub and the rotation plate.

[13] The rotation plate is designed to linearly reciprocate in the direction of the rotary shaft; and the motor is designed to apply an external force to the rotation plate in the direction of the center of the second washing tub. The motor includes a rotary shaft capable of generating a rotational force, and a rotation wing is provided so as to flow the water in the interior of the second washing tub so that the rotation plate moves in the direction of the rotation plate during the rotation, and a rotation engaging rod is provided with one end engaged with respect to the rotation center of the rotation plate in a structure slidable in the direction of the rotation shaft of the rotation plate and the

other end engaged to the rotation shaft.

[14] The second washing machine includes a stopper for limiting a movement distance of the rotation plate in the direction of the center of the second washing tub. There is further provided a safety net designed to separate a space storing the laundry therein and an operation space of the rotation place so as to prevent the laundry of the interior of the second washing tub from being directly contacted.

[15] There are further provided a sub-tank for storing water discharged from the interior of the second washing tub; and a pump for filtering the water of the interior of the sub- tank and re-supplying the water into the interior of the second washing tub through a circulation pipe.

[16] The motor includes a motor body of which an inner surface is engaged with a first stator; a pair of cylindrical shafts which are installed based on an insertion method at a certain interval between them and are engaged with the first washing tub and the second washing tub; and an inner side rotary shaft which is installed at the most inner side of the cylindrical rotary shaft and is engaged at the rotation plate, wherein the rotator is engaged at an outer surface of the cylindrical rotary shaft, and the stator is engaged at an inner surface of the same.

[17] The cylindrical rotary shaft includes a first rotary shaft which is distanced from the first stator, with a first rotator being engaged at an outer surface of the same, and with a second stator being engaged at an inner surface of the same, and with part of the same being inserted into the interior of the motor body. The cylindrical rotary shaft further includes a hollow second rotary which is distanced from the second stator, with a second rotator being engaged at an outer surface of the same, and with a third stator being engaged at an inner surface, and with the second rotary shaft being inserted into the interior of the first rotary shaft.

[18] A magnetic insulator is installed between the motor body and the first stator, the rotary shaft and the rotator, and the rotary shaft and the stator.

[19]

Advantageous Effects

[20] The washing machine according to the present invention has advantages that a rotation plate generates an impact force of a rotating turbulence flow together with a linear movement in a direction of the laundry in water mixed with detergent or a washing liquid for thereby enhancing a washing force.

[21] In addition, a rotation plate sequentially performs a linear movement at both sides, and the opposite rotation plates return to original positions based on linear turbulence impacts of water mixed with detergent or washing liquid at the time when they stop, so that left and right turbulence water flows collide with each other in the opposite

direction of rotation in the interior of the washing tub for thereby increasing washing force. [22] A turbulence wing is arranged to generate turbulence flow at a cylindrical inner surface of a first washing tub, and water mixed with detergent or washing liquid are strongly inputted into a second washing tub based on the rotation of the first washing tub for thereby impacting the laundry, and the water mixed with detergent or a washing liquid can be strongly discharged into the first washing tub by rotating the second washing tub. With the above repeated operations, it is possible to increase a washing effect. [23] In the present invention, a sub-tank is provided so as to recycle water mixed with used detergent and a washing liquid. [24] Since a friction force generates a lot between the water mixed with detergent and a washing liquid in the laundry, a washing time can be significantly decreased. [25] The water mixed with detergent or a washing liquid may be further mixed with the air by generating more impacts, so that and more water mixed with detergent or a washing liquid may be inputted into the laundry for thereby enhancing a washing force. [26]

Brief Description of the Drawings [27] Figure 1 is a cross sectional view illustrating an inner construction of a washing machine according to the present invention; [28] Figure 2 is a disassembled perspective view illustrating a washing tub according to the present invention; [29] Figure 3 is a cross sectional view illustrating a motor cut away in a horizontal direction of a rotary shaft according to the present invention; [30] Figure 4 is a disassembled perspective view illustrating an engaged structure of a rotary shaft of a motor according to the present invention; and [31] Figure 5 is a cross sectional view illustrating a washing tub when a washing machine is driven according to the present invention. [32]

Best Mode for Carrying Out the Invention [33] Figure 1 is a cross sectional view illustrating an inner construction of a washing machine according to the present invention, and Figure 2 is a disassembled perspective view illustrating a washing tub according to the present invention. [34] As shown in Figures 1 and 2, the washing machine according to the present invention comprises a first washing tub 510 which is sealed and rotatable with respect to a rotary shaft corresponding to a center axis in a horizontal direction, a second

washing tub 520 which receives the laundry therein and has a structure being rotatable with respect to the rotary shaft corresponding to a center axis in a horizontal direction and is engaged in the interior of the first washing tub 510, at least rotation plates 530 which are rotatable with respect to the rotary shaft of the second washing tub 520 and is engaged at an inner side of the second washing tub 520, a motor M which separately drives the first washing tub 510, the second washing tub 520 and the rotation plate 530, a sub-tank 600 for storing water discharged from the interior of the second washing tub 520 through a tank water supply port 610, and a pump 720 for filtering the water of the sub-tank 600 through a filter 730 and re-supplying the filtered water to the second washing tub 520 through a circulation pipe 710.

[35] Here, the first washing tub 510 is received into the interior of the washing tub body

20, and the washing tub body 20 is provided with a body water supply port 22 and a body drainage port 24 at the upper and lower side, which are opened and closed based on a user's selection. The first washing tub 512 is formed in a cylindrical shape in a horizontal direction, with the right and left side of the same being closed by a first cover 512, so that water is stored therein. Here, a washing tub water supply port 514 and a washing tub drainage port 516 are formed at the upper and lower sides of the first washing tub 510. The washing tub water supply port 514 and the washing tub drainage port 516 are designed so as to close or open the interior of the first washing tub 510 based on a user's selection.

[36] The rotation plate 530 is designed so as to reciprocate in the direction of the rotary shaft, and the motor M is designed so as to push the rotation plate 530 in the center direction of the second washing tub 520.

[37] In addition, a rotation plate rod 532 having a guide protrusion 533 with a certain length in a direction of the rotary shaft is provided at the side of the motor M of the rotary plate 530. There is provided a rotation wing 536 designed so as to allow the water of the second washing tub 520 to flow in the direction of the rotation plate 530 during the rotation. An engaging part 537 is provided at one end and receives the rotation plate rod 532, and a rotation engaging rod 535 engaged with the motor M is provided at the other end of the same. Here, a guide slit 538 is formed at an inner side of the engaging port 537 and is engaged with the guide protrusion 533. The rotation engaging rod 535 and the rotation plate rod 532 are designed to rotate together and to slide in the direction of the rotary shaft of the rotation plate 530. The operation that the rotation plate 530 is pushed in the direction of the center of the second washing tub 520 will be described.

[38] The washing machine starts after the laundry is inputted into the interior of the second washing tub 520. The first washing tub 510 and the second washing tub 520 independently rotate and generate turbulence flow for thereby washing the laundry. The

rotation plate 530 generates turbulence flow in the horizontal direction based on the rotation operation. At this time, a turbulence plate 518 and a turbulence wing 531 are formed at the inner surfaces of the first washing tub 510 and the rotation plate 530 for thereby generating turbulence flow. The washing protrusion 526 is formed at the inner surface of the second washing tub 520 so as to increase friction force with the laundry, and a through port 524 is formed at the same for drainage.

[39] Here, the washing tub water supply port 514 and the washing tub drainage port 516 correspond to the body water supply port 22 and the body drainage port 24 so that the water supply and drainage are performed easily in the interior of the washing machine when the rotation of the first washing tub 510 stops. An input port (not shown) is formed at a predetermined position so that the laundry can be easily inputted.

[40] Figure 3 is a cross sectional view illustrating a motor cut away in a horizontal direction of a rotary shaft according to the present invention, and Figure 4 is a disassembled perspective view illustrating an engaged structure of a rotary shaft of a motor according to the present invention.

[41] As shown in Figures 3 and 4, the motor M according to the present invention includes a motor body 10, a first rotary shaft 100 which is formed in a rotatable structure, with a part of the same being inserted into the interior of the motor body 10, a second rotary shaft 200 which is inserted into the interior of the first rotary shaft 100, and a third rotary shaft 300 which is inserted into the interior of the second rotary shaft 200.

[42] The first rotary shaft 100 is formed in a hollow shape, with an outer surface of the same being engaged with a first rotary 110, and with an inner surface of the same being engaged with a second stator 220. The second rotary shaft 200 is formed in a hollow shape, with an outer surface of the same being engaged with the second rotator 210, and with an inner surface of the same being engaged with a third stator 320. An outer surface of the third rotary shaft 300 is engaged with the third rotor 310.

[43] The motor body 10 is engaged with the first stator 120 which is distanced from an outer surface of the first rotary 110. Current is supplied to the first rotator 110. The positive and negative poles are alternately formed at the first rotator 110. The first rotary shaft 100 rotates based on the magnetic field direction between the first rotator 110 and the first stator 120 and the direction of the current applied to the first rotator 110. The structure for driving the first rotary shaft 100 is the same as the conventional motor. So, the detailed description of the same will be omitted.

[44]

[45] When the first rotary shaft 100 rotates, and the pole of the second rotator 210 is fixed, the second rotator 210 rotates together with the second stator 220, and the second rotary shaft 200 rotates together with the first rotary shaft 100. Here, when the

current is supplied so that the poles of the second rotary 210 is alternately changed, the second rotary shaft 200 rotates so that a relative speed with the first rotary shaft 100 is generated based on the magnetic force change between the second stator 220 and the second rotator 210. For example, when a rotational force is applied to each rotary shaft 100, 200, 300 based on the angles 1, 1, 1, the first rotary shaft 100 rotates at a speed of

1 rpm, and the relative speed of the second rotary shaft 200 and the first rotary shaft 100 rotates at 1 rpm, so that the absolute speed of the second rotary shaft 200 becomes

2 rpm.

[46] While the first rotary shaft 100 and the second rotary shaft 200 are being rotated, when the pole of the third rotator 310 is fixed, the third rotary shaft 300 is rotated. While the second rotary shaft 200 is being rotated, the pole of the third rotator 310 is fixed. The third rotary shaft 300 rotates together with the second rotary shaft 200. When the current is applied to the third rotator 310 so that the poles are alternately changed, the third rotary shaft 300 rotates faster than the second rotary shaft 100. When the current is applied to each rotary shaft 100, 200, 300, and the absolute speeds of the rotary shafts 100, 200, 300 are 1 rpm, respectively, the absolute speed of the second rotary shaft 200 becomes 2 rpm, and the absolute speed of the third rotary shaft 300 becomes 3 rpm.

[47] For example, when the absolute revolution of each rotary shaft is obtained, assuming that the revolution of each rotary shaft 100, 200, 300 is kl, k2, k3, and the relative revolution of each rotary shaft is il, i2, and the revolution of the rotary shaft 200, 300 is ml, m2 when the stator is not rotated, and further assuming that all rotary shafts are rotated, the absolute rotation speed of each rotary shaft is as follows. Namely, the first rotary shaft 100: the second rotary shaft 200: the third rotary shaft 300 are kl : k2 x il + ml : (k2 x il + ml) x k3 + m2, and (il, i2) has the same revolution as (kl, k2), and (ml, m2) has the same number as (k2, k3).

[48] For example, when each rotary shaft speed of (kl, k2, k3) is (20, 30, 40) rpm differently from each shaft, the absolute rotation speed of each rotary shaft is as follows.

[49] Namely, the absolute speeds of each rotary shaft are as follows. The first rotary shaft 100: the second rotary shaft 200: the third rotary shaft 300 are 20 : 30 x 20 + 30 : (30 x 20 + 30) x 40 + 40.

[50] Therefore, the user controls the size of the current applied to each rotator 110, 210,

310, so that the rotation speed of each rotary shaft 100, 200, 300 can be controlled.

[51] In addition, an insulator 400 is preferably disposed between the rotary shafts 100,

200, 300 and the rotators 110, 210, 310, and the second rotary shaft 200 and the third stator 320. When the insulator 400 is disposed between the rotators 110, 210, 310 and the stators 120, 220, 320, since the magnetic forces are disconnected between the

rotators 110, 210, 310 and the stators 120, 220, 320, so that the motor M can normally rotate the rotary shafts 100, 200, 300.

[52] At this time, the first rotary shaft 100 is gear-engaged with the first washing tub

510, and the second rotary shaft 200 is gear-engaged with the second washing tub 520. The third rotary shaft 300 is gear-engaged with the rotation plate 530.

[53] Figure 5 is a cross sectional view illustrating the washing tub when the washing machine according to the present invention is driven.

[54] As shown in Figure 5, a protrusion pipe 539 having the same axis as the rotary shaft of the rotation plate 530 is provided at the back surface of the rotation plate 530. The second washing tub 520 is fixed at a certain distance from the back surface of the rotation plate 530. There is provided a hole plate 528 arranged so that the outer surface of the protrusion pipe 539 slides at the inner end. An inlet port 529 is arranged so that water flows along the front and back surfaces of the rotation plate 530.

[55] When the engaging rod 535 is rotated based on the operation of the motor M, the rotation plate rod 532 and the rotation wing 536 rotate. Since the rotation wing 536 allows the water of the second washing tub 520 to flow in the direction of the center of the second washing tub 520, as shown in Figure 5, the rotation plate 530 linearly moves in the direction of the center of the second washing tub 520.

[56] The water of the second washing tub 520 is compressed by the linear movement of the rotation plate 530 in the direction of the center of the second washing tub 520 for thereby generating impact force, so that the laundry stored in the second washing tub 520 is effectively washed by the impact force of the water. When the rotation plate 530 is moved in the direction of the center of the second washing tub 520, vacuum pressure is generated between the vacuum plate 528 and the rotation plate 530. Here, when the rotation plate 530 stops, the rotation plate 530 returns to the side of the rotation wing 536 by the vacuum pressure. When the operation of the motor M starts again, the impact force is generated again. At this time, the water in the interior of the second washing tub 520 flows through the inlet port 529.

[57] The second washing tub 520 further includes a safety net 540 which separates the space of the laundry and the operation space of the rotation plate 530, so that it is possible to prevent the laundry from being damaged as the laundry in the interior of the second washing tub 520 is directly contacted with the rotation plate 530. At this time, the safety net 540 has the same function as the stopper which is adapted to limit the movement distance of the rotation plate 530.

[58] The AC or DC may be adapted to the present invention. The present invention may be adapted to all kinds of electric appliances, which use electric power. The present invention may be implemented based on a basic principle. More effects may be obtained with different controls.

Industrial Applicability

[60] As described above, the present invention may be basically adapted to the washing machine having a rotation plate which may linearly move. The present invention may be well adapted to the conventional washing machines and new technologies.

[61] As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.