JP3788630B2 - Washing machine and operation control method of washing machine - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a washing machine and a washing machine operation control method capable of coping with a case where a rotating blade and a washing / dehydrating tub do not rotate evenly during a washing operation, particularly in a fully automatic washing machine.
[0002]
[Prior art]
As is well known, the operation process of the fully automatic washing machine is that the washing process, the rinsing process (for example, twice), and the dehydration process proceed automatically. The washing process consists of washing with water supply and stirring. The process consists of draining, temporary standby for draining water after draining, low-speed dehydration, high-speed dehydration, natural stop, water supply, rinsing by stirring, and the final dehydration process is as follows. It consists of draining, temporary standby for draining after draining, low speed dehydration, high speed dehydration, and natural stop, and finally an end alarm sounds.
[0003]
In the washing step, the rotating blades rotate left and right by the left and right rotation of the motor, and the stirring operation is performed. By the way, in a washing machine using a planetary gear as a speed reduction mechanism, the outer ring gear tries to rotate in a direction opposite to the planetary gear revolution direction by the reaction force of the planetary gear rotation during washing operation. The fixing by the brake is released and the free state is set, and the rotational force in the opposite direction is transmitted to the washing / dehydrating tub, and the washing / dehydrating tub is rotated in the direction opposite to the rotating blades to enhance the cleaning effect.
[0004]
[Problems to be solved by the invention]
If an object is caught in the gap between the rotor blades and the washing / dehydrating tub during the washing operation, the washing / dehydrating tub may rotate only in one direction. As a result, the laundry is biased and the cleaning action is reduced. In addition, the occurrence of a direction in which rotation is difficult results in brake deterioration.
[0005]
The object of the present invention is to eliminate the inconvenience of the conventional example, and to detect when a one-way rotation occurs when the rotating blades and the washing / dehydrating tub are alternately rotated left and right to perform washing operation by stirring. It is another object of the present invention to provide a method for controlling the operation of a washing machine capable of ensuring driving safety and preventing a reduction in cleaning action.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, first, a washing / dehydrating tub is rotatably disposed in a water receiving tub, and a rotating blade in the washing / dehydrating tub is rotated left and right by a motor during a washing operation. At the same time, in a washing machine that frees the rotation of the washing and dewatering tub, the gist is to detect one-way rotation by detecting the left and right rotation speed and the difference between the left and right energization to the motor during washing operation. Is.
[0007]
Secondly, a washing and dewatering tub is rotatably arranged in the water receiving tub, and at the same time as rotating the rotating blades in the washing and dewatering tub left and right by a motor during washing operation, the washing and dewatering tub is free to rotate. In a washing machine, during the washing operation, when the motor is energized to the left and right, the left and right rotation speeds and the difference between them are detected. Is a summary.
[0008]
Thirdly, a washing / dehydration tub is rotatably disposed in the water receiving tub, and the washing / dehydration tub is freely rotated at the same time as the rotating blades in the washing / dehydration tub are rotated left and right by the motor during washing operation. In a washing machine, during washing operation, when the motor is energized to the left and right, the left and right rotation speeds and the difference between them are detected, and if it is determined to rotate in one direction, the washing operation is stopped. is there.
[0009]
Fourthly, a washing / dehydrating tub is rotatably disposed in the water receiving tub, and at the same time as rotating the rotating blades in the washing / dehydrating tub to the left and right by the motor, the rotation of the washing / dehydrating tub is free. In the washing machine, during the washing operation, the left and right rotation speeds and the difference between them are detected when the motor is energized left and right, and when it is determined that the rotation is one-way, the motor energization off time is varied in the left and right directions. This is the gist.
[0010]
Fifth, a washing / dehydrating tub is rotatably arranged in the water receiving tub, and the rotating blades in the washing / dehydrating tub are rotated left and right by the motor during washing operation, and at the same time the rotation of the washing / dehydrating tub is free. In the washing machine, during washing operation, the left and right rotation speeds and the difference between them are detected when the motor is energized to the left and right. Is a summary.
[0011]
Sixthly, when the energization time to the motor is varied in the left-right direction, the gist is to control the left-right rotation angle after the difference in the rotation speed of the motor exceeds the extreme value.
[0012]
[Action]
According to the first aspect of the present invention, if the rotating blades and the washing / dehydrating tub rotate only in one direction during the washing operation, the rotational speeds of the left and right change when the motor is energized left and right. The number and its difference are detected, thereby detecting one-way rotation.
[0013]
According to the second aspect of the present invention, in addition to the above-described operation, when it is determined that it is difficult to rotate in only one direction due to, for example, a laundry bias, By making the direction different, it is possible to loosen the laundry and return it to the normal rotation state.
[0014]
According to the third aspect of the present invention, in addition to the above-described action, for example, when it is determined that the motor can rotate only in one direction due to a mechanical failure, the washing operation is stopped. , Ensure safety.
[0015]
According to the fourth aspect of the present invention, when it is determined that it is difficult to rotate in only one direction due to, for example, unevenness of the laundry, the energization off time is changed to the left and right instead of the energization time to the motor. By changing the direction, it is possible to relieve the unevenness of the laundry and return it to the normal rotation state.
[0016]
According to the fifth aspect of the present invention, when it is determined that, for example, it has been rotated only in one direction due to a mechanical failure, the washing operation is stopped and the tank is free. Just stopping the operation can ensure safety without stopping the operation.
[0017]
According to the sixth aspect of the present invention, when the energization time for the motor is varied in the left-right direction, the left-right rotation angle is controlled after the difference in the motor rotation speed exceeds the extreme value, so that The rotation is controlled at the rotation angle after the change from the time of the rotation speed of 0 or the rotation speed changing from the left rotation to the right rotation, and the set angle is surely executed.
[0018]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a flowchart of an operation showing an embodiment of the operation control method of the washing machine of the present invention. FIG. 3 is an outline of the washing machine in which the method of the present invention is implemented. A washing / dehydrating tub 3 provided with a rotary blade 2 is arranged, an air trap 5 is communicated with a gap 4 between the water receiving tub 1 and the washing / dehydrating tub 3, and a water level sensor 6 is connected to the upper end of the air trap 5. Was provided.
[0019]
A motor 7 is disposed below the water receiving tub 1, and a pulse generator is attached to the motor 7 as a rotation speed detector 8, and the rotating shaft 2 and the washing shaft and the dewatering shaft of the washing and dewatering tub 3 are connected to the planet. It connects with the motor 7 with a V belt and a pulley via the clutch mechanism which uses a gear.
[0020]
Further, a drain valve 9 is provided at a drain port formed at the bottom of the water receiving tank 1, and a drain valve 9 and actuators 10 and 11 by torque motors that drive and control the clutch mechanism are provided at the drain valve 9 and the clutch mechanism, respectively. .
[0021]
Then, the water level sensor 6, the motor 7, the rotation speed detector 8, the actuators 10, 11, the power switch 12, the lid / unbalance switch 13, the water supply valve 14, and the water supply valve 15 dedicated to the finishing agent are controlled using a microcomputer or the like. Connect to device 16.
[0022]
4 is a control block diagram of the control device 16. The control device 16 includes an operation switch 18 connected to the control unit 17, a display 19, an oscillation circuit 20, a reset circuit 21, a zero cross detection circuit 22, a data storage circuit 23, a buzzer. 24, a DC level 25, and an actuator position detector for detecting the position of the rotational speed detector 8, the lid / unbalance switch 13, and the actuators 10 and 11 via the connector 26 on the input terminal side of the control unit 17. 27, the power switch 12 and the water level sensor 6 are connected, and the actuators 10 and 11, the water supply valve 14, the water supply valve 15 dedicated to the finishing agent, and the motor 7 are connected to the output terminal side via the connector 26. The actuators 10 and 11 constitute a drain valve driving unit 28.
[0023]
Next, the operation will be described. In the washing process, after supplying water to the set water level, the motor 7 is energized to rotate the rotating blades 2 alternately left and right, and washing by a stirring operation is performed. FIG. 1 is a flowchart showing the operation of stirring control during the stirring operation. The energization of the motor 7 repeats energization, stop, left rotation energization, and stop of the right rotation. After stopping [Step (A)], after 0.4 seconds [Step (H)], if the previous rotation is clockwise, the next starts energizing to the left rotation, and if the previous rotation is left, the next is right This is done by starting energization for rotation [step (re) (nu) (le)].
[0024]
Then, in order to determine whether the left and right rotations are performed alternately, the energization is stopped after 1 second has elapsed during energization [steps (A), (B), (C)], and the output from the rotational speed detector 8 is used. If the rotation speed of the motor 7 is detected and the rotation amount is not 10 rpm or more [Step (D)], the difference from the previous rotation amount is detected. If this is not 5 rotations or more (Step (E)), it is still It is determined that the rotation is not complete in one direction but is not normal, and an overload warning of the motor 7 is displayed, and the stirring operation is stopped [step (g)].
[0025]
If the difference from the previous rotation amount is 5 rotations or more, it is judged that the left-right rotation is not made even and the unidirectional rotation is in effect, and a unidirectional rotation is warned and displayed. [Step (f)].
[0026]
As described above, when the unidirectional rotation state is reached, the operation is stopped to ensure safety. In addition, if the cause is from the laundry, etc., change the energization time in the direction that is difficult to rotate to be longer than the energization time in the other direction, loosen the laundry, etc. It is also possible to return to a normal state.
[0027]
When changing this energization time, it is not immediately executed when it is determined that the rotation is one-way, but after the motor rotation rate change rate exceeds the extreme value, that is, from the right rotation to the left rotation, or from the left rotation. Executed from the point of time when the number of rotations 0 shifts to right rotation.
[0028]
As another example, when it is determined that the motor is rotating in one direction, or when it is determined that the motor is overloaded, the stirring operation is not completely stopped as described above. It is also possible to stop the tank-free state of the dewatering tank 3 and keep it fixed, and continue the stirring operation. In this case, since the driving is not stopped, the driving according to the intention of the user can be performed.
[0029]
Furthermore, when a direction that is difficult to rotate occurs due to unevenness of the laundry, etc., in addition to the method of changing the energization time to the motor in the left-right direction as described above, the energization off time is By changing the direction, it is possible to change the direction so that the off time before energization in a direction that is difficult to rotate is increased, and loosen the laundry to return it to a normal state.
[0030]
In this washing process, after the stirring operation is started, the brake of the washing / dehydrating tub 3 is released by the action of the actuator 11, the washing / dehydrating tub 3 is brought into a free state, and is rotated by a reaction force in the direction opposite to the rotary blade 2. To do. And in order for the washing and dewatering tub 3 that has become free to rotate in the direction opposite to the rotor 2, the motor 7 must be rotated normally in the left-right direction.
[0031]
To detect this, as shown in the flowchart of FIG. 2, when the motor 7 is energized [step (W)], when the rotation speed further increases from when the rotation speed reaches 1000 rpm or more. Then, the amount of rotation is integrated and a determination is made based on this value [Step (W) (F) (Y)].
[0032]
【The invention's effect】
As described above, the washing machine and the operation control method of the washing machine according to the present invention are as follows. First, during the washing operation, the rotating blades and the washing / dehydrating tub rotate only in one direction, and the motor is energized on the left and right sides. Since the left and right rotational speeds change, the rotational speed and the difference between the rotational speeds can be detected to detect one-way rotation.
[0033]
Secondly, for example, when it is determined that the rotation is difficult in only one direction due to, for example, the unevenness of the laundry, the unevenness of the laundry is loosened by changing the energization time to the motor in the left-right direction. Therefore, it is possible to return to the normal rotation state, and it is possible to prevent the cleaning action from being lowered.
[0034]
Third, for example, when it is determined that the motor is rotating only in one direction due to a mechanical failure, it is possible to ensure safety by stopping the washing operation, and it is impossible to rotate. It is possible to prevent the brake from being deteriorated by force.
[0035]
Fourth, when it is determined that it is difficult to rotate only in one direction due to, for example, unevenness of the laundry, the energization off time can be changed in the left and right directions in place of the energization time to the motor. , Unbalance the laundry and return to normal rotation.
[0036]
Fifth, for example, when it is determined that the motor is rotating only in one direction due to a mechanical failure, for example, instead of stopping the washing operation, the operation can be performed simply by stopping the tank free state. Can secure safety without stopping.
[0037]
Sixth, when the motor energization time is varied in the left-right direction, the left-right rotation is controlled from right rotation to left rotation or right-to-left rotation by controlling the left-right rotation angle after the motor rotation rate change rate exceeds the extreme value. The rotation is controlled at the rotation angle after the change from the time point of the rotation speed 0 to shift to the rotation, and the set angle is surely executed.
[Brief description of the drawings]
FIG. 1 is a flowchart showing an agitation control operation of an embodiment of a washing machine operation control method according to the present invention.
FIG. 2 is a flowchart showing a motor left-right rotation detection operation of the embodiment of the operation control method for the washing machine according to the present invention.
FIG. 3 is an explanatory diagram of a washing machine in which the operation control method of the washing machine of the present invention is implemented.
FIG. 4 is a control block diagram of a washing machine in which the washing machine operation control method of the present invention is implemented.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Water receiving tank 2 Rotary blade 3 Washing / dehydration tank 4 Clearance 5 Air trap 6 Water level sensor 7 Motor 8 Rotation number detector 9 Drain valve 10 Actuator 11 Actuator 12 Power switch 13 Lid / unbalance switch 14 Water supply valve 15 Finishing agent Water supply valve 16 Control device 17 Control unit 18 Operation switch 19 Display 20 Oscillation circuit 21 Reset circuit 22 Zero cross detection circuit 23 Data storage circuit 24 Buzzer 25 DC level 26 Connector 27 Actuator position detector 28 Drain valve drive unit

Claims (6)

In a washing machine in which a washing / dehydrating tub is rotatably disposed in a water receiving tub, and the rotating blades in the washing / dehydrating tub are rotated left and right by a motor during washing operation, and at the same time the rotation of the washing / dehydrating tub is free Washing machine characterized by detecting unidirectional rotation by detecting left and right rotation speed and difference between left and right energization to motor during washing operation   In a washing machine in which a washing / dehydrating tub is rotatably arranged in the water receiving tub, and the rotating blades in the washing / dehydrating tub are rotated left and right by a motor during washing operation, and at the same time the rotation of the washing / dehydrating tub is free During washing operation, when the motor is energized left and right, the left and right rotation speeds and the difference between them are detected, and when it is determined that the motor is rotating in one direction, the energization time to the motor is varied in the left and right directions. Operation control method for washing machine.   In a washing machine in which a washing / dehydrating tub is rotatably arranged in the water receiving tub, and the rotating blades in the washing / dehydrating tub are rotated left and right by a motor during washing operation, and at the same time the rotation of the washing / dehydrating tub is free A washing machine operation control method characterized in that, during washing operation, when the motor is energized to the left and right, the left and right rotational speeds and the difference between them are detected and the washing operation is stopped when it is determined to rotate in one direction. .   In a washing machine in which a washing / dehydrating tub is rotatably arranged in the water receiving tub, and the rotating blades in the washing / dehydrating tub are rotated left and right by a motor during washing operation, and at the same time the rotation of the washing / dehydrating tub is free During washing operation, when the left and right energization to the motor is detected, the left and right rotation speeds and the difference between them are detected, and when it is determined that the rotation is one-way, the energization off time to the motor is varied in the left and right directions. To control the operation of the washing machine.   In a washing machine in which a washing / dehydrating tub is rotatably arranged in the water receiving tub, and the rotating blades in the washing / dehydrating tub are rotated left and right by a motor during washing operation, and at the same time the rotation of the washing / dehydrating tub is free In the washing operation, when the motor is energized to the left and right, the left and right rotation speeds and the difference between them are detected, and when it is determined that the rotation is one-way, the washing and dewatering tank is stopped from being free. Operation control method for washing machine.   3. The operation control method for a washing machine according to claim 2, wherein when the energization time of the motor is varied in the left-right direction, the left-right rotation angle control is performed after the difference in motor rotation speed exceeds an extreme value.

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