TWI717286B - Method for automatically correcting partial load of washing tank and washing machine for carrying out the method - Google Patents

Abstract

A method for automatically correcting the partial load of a washing tank is executed by a washing machine. The washing machine comprises a washing tank, a control unit, a drain valve arranged at the washing tank, and a motor connected to the washing tank. The method includes the following steps: (A) the control unit judges whether the washing procedure is completed; (B) if the judgment result of step (A) is yes, the control unit commands the motor to drive the washing tank when the washing tank is in the state of storing water. The washing tank rotates; and (C) the control unit makes the drain valve open when the washing tank is in a rotating state to execute the eccentric load correction program of the washing tank.

Description

Method for automatically correcting partial load of washing tank and washing machine for carrying out the method

The invention relates to a method, in particular to a method for automatically correcting the partial load of the washing tank.

The operation process of a general washing machine roughly includes a washing procedure and a dehydration procedure. After the washing procedure is completed, the washing machine will first empty the water in the washing tank, and then perform the dehydration procedure. After the water storage in the washing tank is emptied, most of the clothes in the washing tank will be unevenly distributed, which causes the center of gravity of the washing tank to shift. When the center of gravity is shifted, the dehydration process will cause the washing tank to rotate under partial load. When the washing machine detects that the partial load of the washing tank is too serious, it will automatically stop the dehydration process. After the dehydration program is interrupted, the user must adjust the clothes to a uniformly distributed state, so that the washing tank is restored to a non-eccentric load state, and then the dehydration program can be continued. However, if the user is not on site or does not notice that the dehydration process has been interrupted, the washing machine cannot automatically eliminate the above-mentioned partial load problem, which will cause the dehydration process to fail to execute normally.

Therefore, one of the objectives of the present invention is to provide a method for automatically correcting the unbalanced load of the washing tank which can solve the aforementioned problems.

Therefore, the method for automatically correcting the unbalanced load of the washing tank of the present invention is executed by a washing machine in some embodiments. The washing machine includes a washing tank, a control unit, a drain valve arranged at the washing tank, and a connection to the washing tank. Motor for washing tank. The method includes the following steps: (A) The control unit judges Whether the washing procedure is complete; (B) if the result of step (A) is yes, the control unit commands the motor to drive the washing tub to rotate when the washing tub is in the state of storing water; and (C) the control unit is in When the washing tank is in a rotating state, the drain valve is opened to execute the partial load correction program of the washing tank.

In some implementation aspects, the step (B) afterwards includes: (D) the control unit determines whether the rotation speed of the washing tub reaches a predetermined value; if the result of the determination is yes, execute step (C).

In some embodiments, the rotation speed of the washing tank in the step (D) is less than the rotation speed of the washing tank in the step (C).

In some embodiments, the rotation speed of the washing tank in the step (C) is 30-40 RPM.

In some implementations, the step (C) further includes: step (E) the control unit determines whether the eccentric load correction program is over, and if the determination result is yes, the control unit makes the washing tank increase the rotation speed to start the dehydration program.

Another object of the present invention is to provide a washing machine implementing the aforementioned method.

The present invention has at least the following effects: by performing the draining process while the washing tank is in a rotating state, the clothes in the washing tank can be naturally distributed in the washing tank near the side wall with the water flow under the action of the rotating centrifugal force This helps to evenly distribute the clothes, so that the overall center of gravity of the washing tank is not excessively shifted, which can effectively prevent the washing tank from being excessively loaded and unable to perform the dehydration process, and effectively improve the convenience of use.

100: washing machine

1: laundry trough

2: control unit

3: Inlet valve

4: Drain valve

5: Motor

S1~S7: execution steps

The other features and effects of the present invention will be clearly seen in the embodiments with reference to the drawings Presented, where: Figure 1 is a schematic diagram illustrating an embodiment of the washing machine of the present invention; Figure 2 is a control block diagram of the washing machine; and Figure 3 is a flowchart illustrating the implementation of the method for automatically correcting the eccentric load of the washing tank of the present invention step.

1 to 3, which are an embodiment of the washing machine 100 of the present invention and its method for automatically correcting the partial load of the washing tank. The washing machine 100 includes a washing tank 1 for accommodating laundry items, a control unit 2, an inlet valve 3, a drain valve 4, and a motor 5. The control unit 2 can be implemented by various microcontrollers and microprocessors, and is the operation control center of the washing machine 100. The water inlet valve 3 is electrically connected to the control unit 2 and can receive instructions from the control unit 2 to switch between on and off states, thereby controlling whether water can flow into the washing tank 1. The drain valve 4 is arranged on the bottom side of the washing tank 1, which is electrically connected to the control unit 2, and can receive instructions from the control unit 2 to switch the on and off states, thereby controlling whether the water storage in the washing tank 1 Can be discharged. The motor 5 is connected to the rotation axis of the washing tank 1 and controlled by the control unit 2 to drive the washing tank 1 to rotate to perform a dehydration process.

The following describes the overall operation process of the washing machine 100 in conjunction with the drawings.

First, in steps S1 and S2, after the control unit 2 of the washing machine 100 receives the instruction from the user, it will let the washing machine 100 start the washing process and determine whether the washing process is completed.

When the control unit 2 determines in step S2 that the washing process is completed, it will execute steps S3 and S4, and when the washing tub 1 is still storing water, the motor 5 is made to drive the washing tub 1 to start rotating. That is to say, after the washing program ends, the control unit 2 will not command the drain valve 4 to open, so the washing The water stored in the washing tub 1 is not discharged before or during the rotation of the washing tub 1. In this way, the laundry in the washing tub 1 will change its distribution position in the washing tub 1 with the water flow caused by the rotating centrifugal force, and will naturally be distributed near the side wall of the washing tub 1 as the rotation speed increases. .

In an implementation aspect, in step S4, the control unit 2 determines whether the rotation speed of the washing tub 1 reaches a predetermined value of 30 to 40 RPM (rotation per minute). At this rotation speed, it can be ensured that the clothes are distributed adjacent to the washing tub. At the side wall of 1, ensure that the overall center of gravity is not excessively shifted. If the result of step S4 is YES, the washing tank 1 is stopped, and the rotating water flow is created by inertia, so that the clothes can get close to the side wall of the washing tank 1, and the control unit 2 starts the washing tank 1 again. When the tank 1 is in a rotating state, the drain valve 4 is opened to execute the drain procedure of the washing tank 1. Specifically, in the above process, the control unit 2 will open the drain valve 4 to start the drain procedure, and at the same time the washing tub 1 will still maintain a rotating state, so the clothes will be discharged with the stored water and rotate under the centrifugal force. The effect is roughly distributed near the side wall. In this way, it is helpful for the clothes to be evenly distributed, so that the center of gravity of the washing tank 1 is not excessively shifted, and the eccentric load correction of the washing tank 1 is realized.

In step S6, the control unit 2 determines that the water in the washing tank 1 has been completely drained after the draining process is finished. At this time, the clothes will no longer move with the water flow, that is, the partial load of the washing tank 1 before the dehydration process is completed. Calibration procedure. Finally, in step S7, the control unit 2 will cause the motor 5 to drive the washing tub 1 to gradually increase the rotation speed, enter the dehydration process, and complete all washing and dehydration steps.

In summary, the present invention executes the draining process while the washing tank 1 is in a rotating state, so that the clothes in the washing tank 1 are roughly distributed in the washing tank 1 near the side wall with the water flow under the action of the rotating centrifugal force. , Which helps to evenly distribute the clothes, so that the overall center of gravity of the washing tank 1 The excessive deviation can effectively avoid the situation that the washing tank 1 is excessively unbalanced and cannot perform the dehydration process, and effectively improves the convenience of use.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

S1~S7: execution steps

Claims (6)

A method for automatically correcting the eccentric load of a washing tank is executed by a washing machine. The washing machine includes a washing tank, a control unit, a drain valve arranged at the washing tank, and a motor connected to the washing tank. The method includes the following Steps: (A) the control unit judges whether the washing procedure is completed; (B) if the judgment result of step (A) is yes, the control unit commands the motor to drive the washing tub to rotate when the washing tub is in the state of storing water; And (C) when the washing tank is in a rotating state, the control unit opens the drain valve so that the clothes are discharged with the water stored and distributed on the side wall of the washing tank under the rotating centrifugal force to perform the washing tank Eccentric load correction procedure. The method for automatically correcting the partial load of a washing tank according to claim 1, wherein, after step (B), the method includes: (D) the control unit determines whether the rotation speed of the washing tank reaches a predetermined value; if the determination result is yes, Then go to step (C). The method for automatically correcting the partial load of a washing tank as described in claim 2, wherein the rotation speed of the washing tank in the step (D) is less than the rotation speed of the washing tank in the step (C). The method for automatically correcting the partial load of a washing tank as described in claim 1, wherein the rotation speed of the washing tank in the step (C) is between 30 and 40 RPM. The method for automatically correcting the eccentric load of a washing tank as described in claim 1, wherein, after step (C), the method further includes: step (E) the control unit determines whether the eccentric load correction procedure is finished by determining whether the drain procedure is completed. If the judgment result is yes, the control unit makes the washing tub increase the rotation speed to start the dehydration process. A washing machine is used to implement the method for automatically correcting the unbalanced load of the washing tank as described in any one of claims 1 to 5.

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