KR20030049403A - Control Method of float-type clutch of washing machine - Google Patents

Abstract

PURPOSE: A control method of a floating clutch for a washing machine is provided to improve the reliability by detecting engagement or separation of the floating clutch with detecting combination or separation of a float and a fixing member. CONSTITUTION: Supply of water is detected to the first water level in washing(100), and a float is detected to be separated from a fixing member through the clutch operation decision algorithm(110). The float is separated from the fixing member through the clutch separation algorithm(120), and water supply to the second water level is detected according to the laundry amount in separating the floating clutch(130). The laundry is washed and rinsed in the washing tub in supplying water to the second water level(140), and draining is performed(150). The float is engaged with the fixing member through the clutch combination algorithm(160), and engagement of the floating clutch is checked through the clutch operation decision algorithm(170). The laundry is dehydrated by rotating the washing tub in engaging the floating clutch(180).

Description

Control method of float-type clutch of washing machine

The present invention relates to a clutch control method of a buoyancy clutch washing machine, and more particularly, to detect whether the float is completely separated or coupled from the fixing member among the float and the fixing member which are components of the buoyancy clutch. In addition to the application of the clutch separation algorithm and the clutch engagement algorithm to be separated or coupled, if it is not separated or coupled, by applying the clutch operation determination algorithm to determine whether the buoyancy clutch is separated or coupled through the above algorithms, The clutch control method of the buoyancy clutch washer to improve the reliability of the separate coupling operation of the clutch by performing the algorithm.

In general, the buoyancy clutch washer is driven by a splined buoyancy body connected by a spline so that the pulsator can move up and down along the washing shaft connected by the washing water, which is rapidly drained between the pulsator bottom and the washing tank. It is a washing machine of the switching method.

In other words, during washing and rinsing, the buoyant body is lifted up by the water supplied to the water and separated from the de-shrinkment to transfer the rotational force of the motor to the washing shaft only to perform washing and rinsing while rotating the pulsator forward and reverse. Upon completion of drainage, the buoyant body descending by its own weight is coupled to the deshrinkage, so that the washing tank is dewatered while rotating at a high speed in one direction.

Washing machine of this type, as shown in Figure 1, the reservoir 12; A washing tub (14) rotatably embedded in the reservoir (12); A pulsator (16) mounted in the washing tub (14) for washing laundry while rotating forward and reverse through the rotational force of the driving motor (22) transmitted to the washing shaft (74); A drive motor 22 for providing power for the rotary operation of the washing tank 14 and the pulsator 16; The hollow dewatering shaft 72 is fixedly connected to the washing tank 14, and is mounted through the hollow dewatering shaft 72, and the upper end is fixedly connected to the pulsator 16 and the lower end is connected to the driving motor 22. The washing shaft 74 and a plurality of bearings 76 supporting the dewatering shaft 72 are configured to transmit the power of the driving motor 22 to the washing tank 14 and the pulsator 16. )and; It is composed of a buoyancy clutch 80 to selectively interlock the washing tank 14 and the pulsator 16 while being interrupted depending on the presence or absence of the wash water.

In addition, the buoyancy clutch 80, the serration coupled to the washing shaft 74 so as to be movable, and the float (84) is fixed to the circumferential surface of the buoyancy portion 84 to be raised or lowered by the supply and drainage of the washing water ( 82 and a fixing member 86 fixed to an upper end of the dehydration shaft 72 to be separated from the float 82.

Referring to the operation of the washing machine applied buoyancy clutch as described above is as follows.

First, when the washing water is supplied into the washing tank 14 by the water supply stroke, as shown in FIG. 2, the float 82 floats up and is separated from the fixing member 86, so that the buoyancy clutch 80 has a so-called power shut-off state. As a result, the power of the drive motor 22 is transmitted only to the washing shaft.

Therefore, when the washing stroke starts and the driving motor 22 rotates, the pulsator 16 connected to the washing shaft 74 rotates, and the driving motor 22 is intermittently reversed, and the reverse rotation is repeated. By doing so, the pulsator 16 also performs the same forward and reverse rotation operations.

In addition, according to the rotation operation of the pulsator 16, a rotational flow is formed. When the pulsator 16 is continuously rotated in one direction for a predetermined time or more, the washing tank 14 also flows in the same direction as the pulsator 16. The washing water is discharged out of the washing tank 14 by centrifugal force by rotating the washing machine, and the centrifugal washing (so-called waterfall washing), in which the discharged washing water flows back into the washing tank 14 through the flow path between the washing tank 14 and the water storage tank 12, is also It becomes possible.

After the washing process is finished and the washing cycle is completed, the dehydration process is performed. At this time, when the number of washing cycles used for the washing before the dehydration stroke is drained, as shown in FIG. By falling down by being engaged with the fixing member 86, the buoyancy clutch 80 is switched to the power transmission state.

When the washing shaft 74 is rotated by the drive motor 22 in this state, the float 82 coupled with the washing shaft 74 rotates, and the fixing member 86 engaged with the float 82 is rotated. And the washing tank 14 connected to the fixing member 86 is also rotated in the same direction with the washing shaft (74).

Therefore, the washing tank 14 is quickly rotated in one direction so that the laundry is drained through the dehydration hole 14a by centrifugal force in a state in which the laundry is in close contact with the inner wall of the washing tank 14, and the aforementioned dehydration is performed. As described above, the laundry tub 14 and the pulsator 16 are rotated in the same direction at the same time, thereby preventing the laundry from being caught by the pulsator 16 and being damaged.

In the case of the buoyancy clutch 80 described above, the float 82 is simply lifted by the buoyancy force of the wash water being supplied, so that the float 82 simply rises, and the float 82 descends due to its own weight when draining. As a control method, the float 82 lowered by the drainage stroke as described above is not accurately engaged with the fixing member 86, and the float 82 gear portion is placed on the upper end of the gear portion of the fixing member 86. As the slip between gears occurs during dehydration rotation by dehydration stroke, the gear part of the float 82 and the gear part of the fixing member 86 collide with each other, causing a large noise, especially when a buoyancy clutch washer is used for a long time. As a result of the collision of the gears of the buoyancy clutch 80 as described above, the gears of the float 82 and the fixing member 86 may be worn or vulnerable and eventually damaged. , There was a big problem that no further normal dehydration does not proceed with.

In addition, the noise generated during the collision of the gear portion of the float 82 and the fixing member 86 and the vibration due to the gear collision adversely affects the electronic parts of the washing machine, which may cause a failure of the washing machine itself. In addition, there was a big problem that the economic burden due to the repair of the broken washing machine due to the bad effect of the vibration caused by the replacement of the buoyancy clutch 80 worn or damaged as described above and the crash of the gear.

In addition, when sewage such as seams are stuck between the float 82 and the fixing member 86, the combined friction force between the float 82 and the fixing member 86 is greater than the buoyancy force to the wash water to be supplied. As the washing proceeds in a state in which it is not separated well, the float 82 as well as the fixing member 86 also wear and cause noise, and the driving motor 22 due to the rotation of the washing tank 14 as a whole. There was a big problem that caused overload.

The present invention has been made in order to solve the above problems, by detecting whether the float is completely separated or coupled from the holding member of the float and the holding member which is a component of the buoyancy clutch, the float is not separated or coupled to the holding member. If not, the clutch operation algorithm and the clutch operation algorithm to determine whether the buoyancy clutch is separated or combined through the application of the clutch separation algorithm and the clutch engagement algorithm to be separated or combined, thereby performing the performance of the algorithms accordingly The purpose of this is to improve the reliability of the clutch coupling operation.

The object of the present invention is a clutch operation determination algorithm for determining whether the clutch is separated or engaged through the algorithms, along with a clutch separation algorithm and a clutch engagement algorithm that allow the buoyancy clutch to be separated or coupled when the buoyancy clutch is not separated or engaged. It can be solved by the clutch control method of the buoyancy clutch washing machine of the present invention to which the present invention is applied, will be described in detail with reference to the accompanying drawings.

1 is a partial cross-sectional view of a conventional buoyancy clutch washer.

Figure 2 is an operating state of the buoyancy clutch during the washing operation of the conventional buoyancy clutch washing machine.

Figure 3 is a state diagram of the operation of the buoyancy clutch during the dehydration action of the conventional buoyancy clutch washing machine.

4 is a partial cross-sectional view of a buoyancy clutch washer operated by the clutch control method of the present invention.

Figure 5 is a flow chart showing a control method for the clutch operation of the inventors buoyancy clutch washing machine.

Figure 6 is a state diagram of the clutch separation algorithm of the buoyancy clutch control method of the present invention.

7 is a state diagram of the clutch engagement algorithm of the buoyancy clutch control method of the present invention.

8 is a principle diagram of a rotation sensor applied to the buoyancy clutch washing machine shown in FIG.

Figure 9 is a state diagram showing how to determine whether the clutch operation from the angular acceleration of the rotation of the motor.

Explanation of symbols on the main parts of the drawings

12. Reservoir 14. Washing tub 16. Pulsator 22. Drive motor

24. Rotation sensor 26. Magnet 28. Magnetic sensor 70. Transmission

72. Dewatering 74. Washing shaft 76. Bearing 80. Buoyancy clutch

82. Float 84. Buoyancy 86. Fastening member

100. First Level Determination

110. Performing the first buoyancy clutch operation determination algorithm

120. Performing buoyancy clutch separation algorithm

130. Second determination level determination step 140. Washing and rinsing step

150. Drainage step 160. Buoyancy clutch engagement algorithm execution step

170. Performing Secondary Buoyancy Clutch Operation Determination Algorithm

180. Dehydration Step

Figure 4 shows a partial cross-sectional view of the buoyancy clutch washer operated by the clutch control method of the present invention, Figure 5 shows a control method for the buoyancy clutch operation of the present invention in a flow chart, Figures 6 and 7 the present invention Figure 2 shows the state of the clutch separation algorithm and the clutch engagement algorithm in the buoyancy clutch control method.

The clutch control method of the buoyancy clutch washer of the present invention includes a first set level determination step (100) of determining whether the washing water is supplied to the set level 1 during the washing operation of the buoyancy clutch washer;

If it is determined through the above step that the wash water is supplied to the first set water level, the primary buoyancy to determine whether the buoyancy clutch 80, that is, whether the float 82 is separated from the fixing member 86 by the clutch operation determination algorithm Performing a clutch operation determination algorithm (110);

If the buoyancy clutch 80 is not separated through the step, performing the buoyancy clutch separation algorithm 120 to allow the float 82 to be separated from the fixing member 86 through a clutch separation algorithm;

When the buoyancy clutch 80 is separated through the above step, the water supply process is started, and the second setting level determination step 130 determines whether the washing water is supplied to the set water level 2 according to the washing amount;

If it is determined whether the washing water is supplied to the second set water level through the above steps, the washing and rinsing step 140 of washing and rinsing the laundry contained in the washing tank 14 by washing and rinsing the washing machine;

A drainage step 150 for draining the washing and the rinsing of the laundry contained in the washing tank 14 through the above steps;

Performing a buoyancy clutch engagement algorithm (160) to allow the float (82) descending by its own weight to engage the fixing member (86) by the clutch engagement algorithm when drainage is completed through the above steps;

Performing a secondary buoyancy clutch operation determination algorithm (170) for checking whether the buoyancy clutch (80) engaged through the above step is engaged with the buoyancy clutch (80) by the clutch operation determination algorithm;

When the coupling of the buoyancy clutch 80 is confirmed through the above steps, the dehydration step 180 is rotated to dehydrate the laundry by rotating the washing tank 14 by the dehydration operation of the washing machine.

At this time, the buoyancy clutch operation determination algorithm, as shown in Figure 9, the buoyancy clutch 80 from the rotation angular acceleration value of the drive motor 22 generated by rotating the drive motor 22 in one direction for a set time. ) Is to determine whether to operate, a detailed description thereof will be described later in the specification.

As shown in FIG. 6, the buoyancy clutch separation algorithm includes a float 82 and a fixing member 86, which are components of the buoyancy clutch 80 due to the impact of shortly forward and reverse rotation of the driving motor 22. ), But the gear bite may be alleviated, but after the one-way rotation is repeated several times for a short time, the drive motor 22 may be repeatedly rotated several times in the opposite direction to shorten the gear bit of the buoyancy clutch 80. The method can effectively alleviate the engaging force of the buoyancy clutch 80 in a short time. At this time, in implementing the above-described buoyancy clutch separation algorithm, a process of turning on the driving motor 22 for about 1 to 50 ms (millisecond) and turning off for about 0.1 to 1 second (sec) is performed. After repeating 2 to 5 times in one direction, the reverse direction is also carried out one or more times to repeat 2 to 5 times in the same manner, or the process was repeated 2 to 5 times in one direction.

The buoyancy clutch coupling algorithm, as shown in FIG. 7, engages the buoyancy clutch 80 by repeatedly rotating the driving motor 22 several times in a short time, and then repeats the rotation several times in a direction opposite to the short time. Although smoothly implemented, as described above, when the fixing member 86 of the components of the buoyancy clutch 80 rotates more than the gear pitch, between the teeth and teeth of the float 82 engaged with the fixing member 86. In order to prevent this from being coupled to each other, the rotational angle of the driving motor 22 during one driving time is set to be shorter than the pitch of the float 82 gear or the fixing member 86 gear, thereby preventing the driving motor. It is preferable not to pass more than one float 82 gear teeth in which the fixing member 86 gear teeth mesh with each other in one drive of 22. At this time, in implementing the buoyancy clutch coupling algorithm as described above, the driving motor 22 is turned on for about 1 to 50 ms (millisecond) and off for about 0.1 to 1 second (one). After repeating for 2 to 5 times, the reverse direction is also performed in the same manner repeating 2 to 5 times one or more times, or the process is performed to repeat 2 to 5 times in one direction.

Hereinafter, the control method for the separation and coupling of the buoyancy clutch during washing, rinsing and dehydration using the buoyancy clutch washing machine will be described in detail.

In order to smoothly perform the buoyancy clutch control method of the present invention, a rotation sensor 24 for detecting rotation pulses generated from the drive motor 22 is applied to the lower side of the drive motor 22 of the above-described buoyancy clutch washing machine. As described above, the configuration of the buoyancy clutch washer to which the rotation sensor 24 is applied is as follows.

The buoyancy clutch washer to which the rotation sensor 24 is applied, as shown in Figure 4, the reservoir 12 for storing the wash water to be supplied when washing; A washing tank (14) rotatably embedded in the storage tank (12) for washing, washing, and dehydrating laundry; A pulsator (16) mounted at the center of the bottom of the washing tub (14) to form a washing stream while rotating forward and reverse through the rotational force of the washing shaft (74) to wash the laundry with the current friction; A driving motor 22 for supplying power to the washing shaft 74 and the dewatering shaft 72 for the rotation operation of the washing tank 14 and the pulsator 16; It is fixedly connected to the washing tank 14 and receives a rotational force of the drive motor 22 when dewatering, the hollow dewatering shaft 72 to rotate the washing tank 14, and is mounted through the upper in the dewatering shaft 72 The washing shaft 74 is fixedly connected to the pulsator 16 and connected to the driving motor 22 at the lower end thereof, and a bearing 76 supporting the dehydration shaft 72 to drive the power of the driving motor 22. A transmission 70 for transmitting the washing tank 14 and the pulsator 16; A buoyancy clutch (80) for selectively interlocking the washing tub (14) and the pulsator (16) while being interrupted according to the presence or absence of the washing water; Is installed in the lower portion of the drive motor 22 is composed of a rotation sensor 24 for detecting a rotation pulse generated from the drive motor 22.

In addition, the buoyancy clutch 80, the serration coupled to the washing shaft 74 so as to be movable, and the float (84) is fixed to the circumferential surface of the buoyancy portion 84 to be raised or lowered by the supply and drainage of the washing water ( 82 and a fixing member 86 fixed to an upper end of the dehydration shaft 72 to be separated from the float 82 and separated from the float 82.

Since the washing stroke and the dehydrating stroke of the buoyancy clutch washing machine configured as described above have been described above in the related art, the washing stroke and the dehydrating stroke are omitted, and the control method of the buoyancy clutch will be described in detail in comparison with the flowchart shown in FIG. 5.

Example

As shown in FIG. 5, when the washing stroke for washing is started, the rotational force of the driving motor 22 is transmitted to the washing shaft 74 to wash by the forward and reverse rotation of the pulsator 16. The washing water is supplied to the set water level 1 so that the buoyancy clutch 80 is separated by the process of separating the buoyancy clutch 80 in advance so that the float 82 engaged with the fixing member 86 is separated. When the water level of the wash water being supplied reaches the set level 1 (100), the float 82 and the fixing member 86, which are the components of the buoyancy clutch 80 engaged with each other, are washed by the buoyancy of the wash water. To determine whether the clutch operation determination algorithm is performed 110, when the buoyancy clutch 80 is separated from each other by the clutch operation determination algorithm, the washing water to the set level 2 through the secondary water supply process Watered When the buoyancy clutch 80 is not separated, the gear bite of the buoyancy clutch 80 is alleviated by the impact of short forward and reverse rotation of the motor to separate the clutch 80. A clutch detachment algorithm 120 is performed to determine whether the buoyancy clutch 80, that is, the float 82 and the fixing member 86 are separated from each other through the clutch operation discrimination algorithm. do.

At this time, if it is determined whether the buoyancy clutch 80 is separated through the clutch operation determination algorithm, the washing water is supplied to the set water level 2 through the second water supply process as described above. If 80 is not separated, the clutch separation algorithm is re-executed 120, and then the separation state of the buoyancy clutch 80 is determined through the clutch operation determination algorithm.

When the float 82 and the fixing member 86 constituting the buoyancy clutch 80 are separated through the above process, the washing water is supplied to the set water level 2 according to the washing amount, and it is determined that the water level is reached ( 130, the washing shaft 74 is transmitted to the driving force of the driving motor 22 to perform the washing and rinsing process 140 while the pulsator 16 of the washing machine rotates forward and backward, as described above. When the wash water is supplied to the set water level 2, the float 82, which is a component of the buoyancy clutch 80, rises to the bottom of the pulsator 16 due to the buoyancy of the wash water.

When the washing and the rinsing of the laundry is finished through the washing and rinsing process 140 as described above, the washing water contained in the washing tank 14 is drained to the outside of the washing machine, at which time the washing water stops the buoyancy clutch 80. When the water is drained to the bottom of the float 82, the float 82 of the buoyancy clutch 80, which has been raised to the bottom of the pulsator 16 by the buoyancy of the washing water, is lowered by its own weight, and then the drainage process ends ( 150, the lowering of the float 82 is not engaged with the fixing member 86, but the lowering of the float 82 is completed, so that the driving motor 22 is terminated. After repeating the one-way rotation several times for a short time, and then repeats the rotation in the opposite direction of the short time to perform a clutch engagement algorithm (160) to ensure that the engagement of the buoyancy clutch 80, the float 82 and the fixing member ( 86) Encourage mutual matching.

Subsequently, the clutch operation determination algorithm determines whether the coupling of the buoyancy clutch 80, that is, the float 82 and the fixing member 86, is mutually engaged with each other. When combined, the dehydration shaft 72 and the buoyancy clutch 80 and the washing shaft 74 receive the rotational force of the driving motor 22 to proceed to the dehydration process 180 for dewatering while rotating at a high speed in one direction. When the buoyancy clutch 80 is not engaged, the clutch engagement algorithm is re-executed 160, and then the engagement state of the buoyancy clutch is re-determined 170 through the clutch operation determination algorithm.

When it is determined that the float 82 and the fixing member 86 constituting the buoyancy clutch 80 are coupled to each other through the above process, that is, the clutch operation determination algorithm, the washing tank is performed while performing the next process, the dehydration process 180. (14) Dehydration of the laundry is made, and one cycle of washing, rinsing, and dehydration is completed through the above processes.

FIG. 8 illustrates the principle of the rotation sensor 24 which is a component of the apparatus for detecting the rotation of the motor, that is, the component of the buoyancy type clutch washer according to the present invention. The magnetic force of the sensor 28 while the magnet 26 rotates about the rotation axis by installing at least one, and fixing the magnetic force sensing sensor 28 at a position capable of detecting the magnetic force of the rotating magnet 26. The rotational speed of the driving motor 22 is detected from the detection time difference.

FIG. 9 is a state diagram illustrating a method of determining whether the clutch is operated from an angular acceleration in which the motor rotates. The angular acceleration is determined from a detection time of the sensor 28 detecting the rotating magnets 26. The equation is

α (i): mean rotational angular velocity from the middle of the i th to the first intermediate time of the i +

T (ｉ): i time of rotation between magnets

N: number of magnets

Clutch engagement status: α (ｉ) <set value 1

Clutch disconnection state: α (ｉ)> set value 2

Set value 1 <Set value 2

When the buoyancy clutch 80 is separated from each other by the above equation, since the load on the driving motor 22 is small, the angular acceleration of the shaft of the drive motor 22 is larger than the set value 2, and conversely, the buoyancy clutch 80 Are coupled to each other, the coupling and separation of the buoyancy clutch 80 is determined by a clutch operation discrimination algorithm that recognizes that the angular acceleration of the drive motor 22 shaft is smaller than the set value 1 because the load on the drive motor 22 is large. It is possible to prevent the malfunction of the washing machine in advance.

If the rotation angular acceleration of the drive motor 22 is larger than the set value 1 and smaller than the set value 2, that is, the set value 1 <α (i) <set value 2, the clutch operation determination algorithm is retried.

In addition, the rotational angular acceleration value of the drive motor 22 presented in the above formula may be used as a value for detecting the unbalance before the quantity detection and dehydration, and in particular, the rotational angular acceleration of the drive motor 22 is small in the case of the detection of the quantity. The more the amount of capacity is shown, and in the case of the unbalance before dehydration, the angular acceleration of the driving motor 22 may be largely unbalanced according to time or rotational speed.

Furthermore, in the method of determining the clutch operation determination algorithm, a value obtained by averaging only the time for the rotation interval of the magnet 26 for a predetermined period may be used. In this case, if the average time is short, the buoyancy clutch 80 is separated. If the average time is long, it may be determined that the buoyancy clutch 80 is coupled, but may be sensitive to load conditions and other environments.

In the clutch control method of the buoyancy clutch washing machine of the present invention, when the float is not separated or coupled to the fixed member by detecting whether the float is completely separated or coupled from the fixed member among the float and the fixed member which are components of the buoyancy clutch. In addition to applying the clutch separation algorithm and the clutch engagement algorithm for separating or coupling the clutch, the clutch operation determination algorithm for determining whether the buoyancy clutch is separated or coupled through the above algorithms is applied. There is an excellent effect that greatly improves the reliability of the separate coupling operation.

Claims (13)

A first set level determination step of determining whether the washing water is supplied to the set level 1 when the buoyancy type clutch washing machine is washed; Performing a buoyancy clutch separation algorithm for separating the float of the buoyancy clutch from the fixing member through the step; When the buoyancy clutch is separated through the step, a water supply process is started, and a second setting level determination step of determining whether the washing water is supplied to the set water level 2 according to the washing amount; If it is determined that the washing water is supplied to the second set water level through the above steps, the washing and rinsing step of washing and rinsing the laundry contained in the washing tank by washing and rinsing the washing machine; A draining step of draining the laundry and the rinsing of the laundry contained in the washing tank through the step; Performing a buoyancy clutch engagement algorithm to allow the float descending by its own weight to be engaged with the fixing member through the clutch engagement algorithm when the drainage is completed through the above steps; The clutch control method of the buoyancy clutch washer characterized in that the dehydration step of dewatering the laundry by rotating the washing tank of the washing operation of the washing machine through the step. A first set level determination step of determining whether the washing water is supplied to the set level 1 when the buoyancy type clutch washing machine is washed; Performing a primary buoyancy clutch operation determination algorithm for determining whether the buoyancy clutch is separated, that is, whether the float is separated from the fixing member, by the clutch operation determination algorithm when it is determined whether the washing water is supplied to the first set water level through the above steps; Performing a buoyancy clutch separation algorithm for causing the float to be separated from the holding member through a clutch separation algorithm if the buoyancy clutch is not separated through the step; When the buoyancy clutch is separated through the step, a water supply process is started, and a second setting level determination step of determining whether the washing water is supplied to the set water level 2 according to the washing amount; If it is determined that the washing water is supplied to the second set water level through the above steps, the washing and rinsing step of washing and rinsing the laundry contained in the washing tank by washing and rinsing the washing machine; A draining step of draining the laundry and the rinsing of the laundry contained in the washing tank through the step; Performing a buoyancy clutch engagement algorithm to allow the float descending by its own weight to be engaged with the fixing member through the clutch engagement algorithm when the drainage is completed through the above steps; Performing a secondary buoyancy clutch operation determination algorithm for checking whether the buoyancy clutch engaged through the step is coupled to the buoyancy clutch by the clutch operation determination algorithm; When the buoyancy clutch coupling is confirmed through the above steps, the clutch control method of the buoyancy clutch washer characterized in that the dehydration step of dehydrating the laundry by rotating the washing tank by the dehydration stroke of the washing machine. The method of claim 1, wherein the buoyancy clutch separation algorithm is characterized in that the gear motor of the buoyancy clutch is relieved by repeatedly rotating the drive motor several times in a direction opposite to the short time after repeating one direction rotation for a short time. Clutch control method of buoyancy clutch washer. The buoyancy clutch coupling algorithm of claim 1, wherein the buoyancy clutch coupling algorithm is configured to smoothly engage the buoyancy clutch by repeatedly rotating the drive motor several times in a short time and then repeating the rotation in the opposite direction for a short time. Clutch control method of clutch washing machine. The method of claim 3, wherein in implementing the buoyancy clutch separation algorithm, the driving motor is turned on for about 1 to 50 ms (millisecond) and turned off for about 0.1 to 1 second in one direction. The clutch control method of the buoyancy clutch washer characterized in that it performs one or more strokes repeated two to five times in the same manner in the opposite direction after repeated two to five times. The method of claim 4, wherein in implementing the buoyancy clutch engagement algorithm, the driving motor is turned on for about 1 to 50 ms (millisecond) and off for about 0.1 to 1 second in one direction. The clutch control method of the buoyancy clutch washer characterized in that it performs one or more strokes repeated 2 to 5 times in the same manner in the opposite direction after repeating 2 to 5 times. According to claim 1, The buoyancy clutch separation algorithm, the clutch control method of the buoyancy clutch washer characterized in that the gear bit of the buoyancy clutch is relieved by repeating the driving motor 2 to 5 times in one direction for a short time. . The method of claim 1, wherein the buoyancy clutch coupling algorithm performs a driving motor 2 to 5 times in one direction for a short time to smoothly engage the buoyancy clutch washing machine. 9. The buoyancy force according to claim 4 or 8, wherein in implementing the buoyancy clutch engagement algorithm, the drive motor rotational angle during one driving time is set to rotate shorter than the pitch of the buoyant body gear and the dewatering gear. Clutch control method of clutch washing machine. 3. The buoyancy clutch washer according to claim 2, wherein the buoyancy clutch operation determination algorithm determines whether the buoyancy clutch is operated from the rotational angular acceleration value of the drive motor generated by rotating the drive motor in one direction for a set time. Clutch control method. 12. The method of claim 10, wherein the implementation of the buoyancy clutch operation determination algorithm determines whether the buoyancy clutch is operated by the rotational angular acceleration of the drive motor, and when the angular acceleration of the drive motor shaft is less than the set value 1, the buoyancy clutch is coupled. When the angular acceleration of the drive motor shaft is greater than the set value 2, the buoyancy clutch control method of the buoyancy type washing machine, characterized in that it is determined that the buoyancy clutch is separated. The method of claim 10, wherein in the case of the rotational angular acceleration of the drive motor shaft, the instantaneous rotational angular acceleration is determined from the detection time of the sensor sensing the rotating magnets, A buoyancy clutch control method of the buoyancy type washing machine, characterized in that for determining the rotational angular acceleration of the drive motor. The method according to claim 10, wherein the smaller the rotational angular acceleration of the drive motor is determined to be larger by using the rotational angular acceleration value of the drive motor as a value for detecting the quantity and the unbalance before dehydration. A buoyancy clutch control method of a buoyancy type washing machine, characterized in that it is determined that the unbalance value is large when the angular acceleration of the motor is shaken by a large value.