KR100215415B1 - Unbalance prevention method of washing machine - Google Patents

Abstract

The present invention relates to a method for preventing unbalance of a washing machine, which is dehydrated while draining by draining the pulsator shortly after the completion of the rinsing stroke, which is a series of washing strokes, by rotating the pulsator shortly and reversely. And sequentially performing a washing stroke and a rinsing stroke for a predetermined time and number of times according to the rinsing operation signal. When the rinsing stroke is completed, draining the washing water while rotating the pulsator forward and reverse without operating the gear clutch; When the drainage of the wash water is completed, performing a balance dewatering for a predetermined time while operating the gear clutch and the synchronous motor to rotate the washing tank; When the balance dehydration is completed, the dehydration is performed for a predetermined time.

Description

How to prevent unbalance of washing machine

The present invention relates to a method for preventing an unbalance of a washing machine, and in particular, after completion of a series of rinsing strokes, the washing machine drains the washing water while the pulsator is shortly forward and reversely rotated to drain the washing water to prevent unbalance during dehydration. It relates to a method for preventing unbalance.

In general, in the case of a washing machine, the washing and rinsing stroke is performed to wash and rinse the pulsator while rotating the pulsator forward and reverse. When the washing and rinsing stroke is completed, drainage is performed. Then, when the drainage is completed, after dehydration of the balance for a predetermined time in order to release the unbalance due to poking caused by the rotational friction caused by the washing water flow during the washing stroke or rinsing stroke, the dehydration.

As such, when performing a series of washing operations, the gear clutch and the drain synchronous motor of the gear unit do not operate during washing and rinsing so that the drain valve is closed and the washing and rinsing are performed while the pulsator is rotated forward and backward. When the washing and rinsing is completed, the pulsator stops the forward and reverse rotation and operates only the drain synchronous motor to open and drain the drain valve.

In addition, when the drainage is completed and the balance dewatering or the main dehydration, the gear clutch of the gear part is operated, the drainage synchronous motor is operated to rotate the washing tank, and the drainage valve of the drain opening opens the polluted laundry generated from the laundry by the centrifugal force of the washing tank. The water is drained through the drain valve.

As described above, the gear clutch and the drain synchronous motor do not operate during the washing and rinsing stroke, and the gear clutch and the drain synchronous motor are interlocked during the draining and dehydrating stroke to release the twist of the laundry generated during washing or rinsing. During washing or rinsing, that is, with washing water in the wash tub, it must be released.

However, during washing or rinsing, there is a problem in washing power, so it is not possible to loosen the twist of the laundry. However, the washing or rinsing should be released during the drainage or immediately before the drainage with the wash water to prevent debalance while dewatering after draining. You can do it.

However, in the case of the conventional washing machine, since the gear clutch and the drain synchronous motor are operated at the time of drainage, even if the washing motor is operated, the washing tank and the pulsator are not rotated by the operation of the gear clutch, and thus the laundry is not released. .

Therefore, in order to release the twist of the laundry can not only be released while monitoring and re-rinsing the unbalance during the dewatering of the balance will not only waste the washing water when the unbalance occurs, it will have a problem that consumes unnecessary power.

Therefore, the present invention has been made in order to solve the above problems according to the prior art, an object of the present invention is to wash the pulsator when draining the water after the completion of a series of washing and rinsing stroke, draining while rotating, The present invention provides a method for preventing unbalance of a washing machine to prevent unbalance due to twisting of laundry after draining by draining the washing water while releasing the twist of the laundry caused by the water flow friction when rinsing.

In order to achieve the above object, there is provided a method of preventing an unbalance of a washing machine according to the present invention, in the washing method of a washing machine equipped with a synchronous motor, a pulsator, a washing tank, and a gear clutch, a predetermined time and Sequentially performing the washing stroke and the rinsing stroke for a number of times; When the rinsing stroke is completed, draining the washing water while rotating the pulsator forward and reverse without operating the gear clutch; When the drainage of the wash water is completed, operating the gear clutch and the synchronous motor to perform balance dewatering for a predetermined time while rotating the washing tank; When the balance dehydration is completed, the step of performing the dehydration for a predetermined time.

1 is a view schematically showing a cross-sectional view of the configuration of a washing machine applied to the method for preventing unbalance of a washing machine according to the present invention.

Figure 2 is an enlarged cross-sectional view showing a drain valve state of the washing machine applied to the present invention, Figure 2a is a view showing the operating state when washing and rinsing, Figure 2b is a view showing the operating state when draining, Figure 2c when dewatering Drawing showing operation status

3 is a view schematically showing a control block configuration of a washing machine applied to the method for preventing the unbalance of the washing machine according to the present invention.

4 is a front view showing an operation flowchart of the unbalance preventing method of the washing machine according to the present invention.

<Explanation of symbols for main parts of drawing>

A: Operation signal input part B: Micom

C: Water supply and drainage part D: Water level detection part

E: motor driving part e: synchronous motor driving part

Hereinafter, a method of preventing unbalance of a washing machine according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic longitudinal cross-sectional view of a washing machine applied to the present invention, Figure 2 is an enlarged cross-sectional view showing the drain valve relative of the washing machine applied to the present invention, Figure 2a is a view showing the operation relative when washing and rinsing, Figure 2b is a view showing an operating state when draining, Figure 2c is a view showing an operating state when dehydration.

1 and 2, a storage tank 1 for storing the washing water supplied during washing and rinsing, which is a series of washing operations, and a washing tank located inside the storage tank for washing, rinsing, and dehydrating laundry (2) and a pulsator (3) for washing and rinsing the laundry by causing the water flow while rotating forward and reverse while being located at the bottom center of the washing tank (2), and at the lower center of the water storage tank (1). 2) and a gear unit 7 composed of a reducer 4, a gear clutch 5, a synchronous motor 6, which transmit rotational force to the pulsator 3, and one side of the gear unit 7, respectively. To the motor 8 for supplying rotational force and the drain valve 10 located on the other side of the gear portion 7 to discharge the contaminated wash water drained from the drain port 9 of the reservoir 1 in two directions. It is composed.

3 is a view schematically showing a control block configuration of a washing machine used in the method for preventing the unbalance of the washing machine according to the present invention. Referring to the configuration, an operation signal input unit for setting and entering a series of washing administrations, rinsing, and dehydration operations is shown. (I) and the microcomputer (b) and microcomputer (b) which control the driving signal input from the driving signal input unit (a) by a predetermined program and output the controlled signal to each driving unit to control each driving unit. The water supply and drainage drive unit (C) for supplying the washing water to the washing tank or draining the washing water supplied to the washing tank by receiving the control signal outputted from), and the washing water supplied to the washing tank and the washing water drained by the control signal of the microcomputer (B). Washing and rinsing the laundry while rotating forwards and reverses according to the water level detector (D) and the control signal of the microcomputer (B) that detects the water level, It is comprised of multiple synchronous motor unit (F) to which the drain valve opened and closed in two stages by the control signal drain the wash water in the washing tank of a motor drive unit (E) and a microprocessor (B) to be.

4 is a flowchart illustrating an operation of a method for preventing an unbalance of a washing machine according to the present invention. Referring to the method, first, the pulsator is positively rotated in an initialization state (a state in which washing water is supplied to a predetermined washing water level). While the washing step 30 to perform the washing administration for a predetermined time while the washing step 30, the washing completion determination step 31 to determine whether the washing administration is completed for the predetermined time, and the washing administration is completed If it is determined, after the washing water is drained, the rinsing step 32 of performing a rinsing stroke for a predetermined time and number of times by re-watering the rinsing water, and determining whether the rinsing stroke is completed a predetermined number of times in the rinsing step 32. When the rinse completion determination step 33 and the determination result, it is determined that the rinsing stroke is completed, the washing water is drained while rotating the forward and reverse rotation of the washing motor without operating the gear clutch. The drainage step 34, and when the drainage is completed, the balance dewatering step 35 for balancing the dehydration by rotating the washing tank while automatically operating the gear clutch and operating the synchronous motor, and the balance dewatering completion to determine whether the balance dewatering is completed. Judgment step 35, and the result of the determination, if the balance dehydration is completed is made of the main dehydration step 37 to perform the main dehydration.

It will be described in detail with respect to the unbalance prevention method of the washing machine according to the present invention as described above.

First, when the power is supplied to the washing machine and the laundry to be washed is put in, the driving signal input unit sets a series of washing administrations to be operated and inputs them to the microcomputer (B). The driving signal inputted by the driving signal input unit (A) is controlled by a predetermined program, and the controlled signal is output to each driving unit for washing. That is, in the microcomputer (b), the water supply level is determined according to the washing amount to be washed in the washing step 30, and the water supply and drainage unit (C) is controlled by the determined water level to supply the washing water. At this time, the drain valve 10 of the drain port 9 detects the water level of the wash water being supplied through the water level sensing unit d while blocking the drain port 9 as shown in FIG. 2A. When the water supply is completed up to the set water level, the microcomputer (b) controls the motor driving part (e) to proceed with washing while rotating the washing motor forward and reverse.

As described above, while the washing motor is being rotated forward and backward, the washing completion determination step 31 determines whether the washing operation in progress is completed.

As a result of the determination, if the washing administration is not completed, the washing administration is continuously performed for a predetermined time, and when the washing administration is completed, the contaminated washing water generated during washing is drained.

Then, when the drainage is completed, go to the rinsing step 32 to control the water supply and drainage drive (C) to supply the wash water to the determined water level, and when the water supply is completed to the predetermined water level to control the motor driving unit (e) pulsing The rinsing stroke is performed for a predetermined number of times while rotating the data forward and reverse.

During the rinsing cycle as described above, the microcomputer (b) goes to the rinse completion determination step 33 to determine whether the rinsing is completed a predetermined number of times.

As a result of the determination, if the rinsing is not completed a predetermined number of times, the rinsing stroke is continuously performed until the rinsing is completed, and if the rinsing stroke is completed, the microcomputer (b) goes to the drainage step 34 and the synchronous motor driving unit (bar ) To operate the synchronous motor (6). At this time, the synchronous motor 6 operates only one stage to open the drain valve 10 of the drain port 9 in only one direction as shown in FIG. 2B, while the gear clutch 5 of the gear unit 7 is not operated. While draining the wash water, the motor driving part (e) is controlled to rotate the motor 8 forward and reverse to drive the pulsator 3, thereby releasing the twist of the laundry generated by the rotational water friction force during rinsing. To do.

As described above, when the drainage is completed while the pulsator 3 is rotated forward and backward and the drain valve 10 is opened in only one direction while the drainage is in progress, the microcomputer (b) goes to the balance dewatering step 35. The synchronous motor driving unit (bar) is controlled to operate the synchronous motor 6, but the synchronous motor 6 is operated in two stages to operate the drain valve 10 of the drain port 9 in both directions as shown in FIG. 2C. At the same time, the gear clutch 5 of the gear unit 7 is operated to release the reducer 4 from the gear unit 7. Subsequently, by controlling the motor driving part (e), the balance dewatering proceeds while rotating the motor 8 in one direction.

While the balance dehydration is in progress, the microcomputer (b) goes to the balance dehydration completion determination step 36 to determine whether the balance dehydration is completed, and if the balance result is not completed, the balance dehydration continues until the balance dehydration is completed. When the balance dehydration is completed, go to the main dehydration step 37 to control the motor driving unit (e) to perform the main dewatering stroke of the laundry with a rotating centrifugal force while rotating the washing tank 2 at high speed.

As described above, the method for preventing the unbalance of the washing machine according to the present invention is to open the drain valve when draining after a series of washing and rinsing strokes, draining the wash water while rotating the pulsator forward and reverse, and the water flow friction during washing or rinsing. Because it releases the twist of the laundry generated by the drainage will have the effect of preventing the unbalance by the twist of the laundry during dehydration after draining.

Claims (1)

A washing method of a washing machine having a synchronous motor, a pulsator, a washing tank, and a gear clutch, the washing method comprising: sequentially performing a washing stroke and a rinsing stroke for a predetermined time and a number according to a washing and rinsing operation signal; When the rinsing stroke is completed, draining the washing water while rotating the pulsator forward and reverse without operating the gear clutch; When the drainage of the washing water is completed, performing balance dewatering for a predetermined time for rotating the washing tank by operating the gear clutch and the synchronous motor; When the balance dehydration is completed, the method of preventing the unbalance of the washing machine, characterized in that the step of performing the dehydration for a predetermined time.