JP2012170684A - Drum washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum washing machine that smoothly starts up dewatering of clothing.SOLUTION: A drum washing machine includes: a washing machine housing 41 in which a water tank unit 49 of a vibration system is elastically supported by two supporting dampers 51 and one vibration-proof damper 91; vibration detection means 78 provided in a water tank 42 and capable of detecting vibration components in three-dimensional direction; rotation number detection means 90 for detecting a rotation number of a rotary drum 43; and control means 82 for controlling each of processes including washing, rinsing, and dewatering. In a process for dewatering, the rotary drum 43 is rotated in one rotation direction. When a vibration value detected by vibration detection means 78 for each of rotation number ranges exceeds each threshold value, a prescribed number of operations for a re-start of dewatering are performed. When the number of operations for a re-start of dewatering exceeds the prescribed number, the rotary drum 43 is rotated in the reverse direction to the one rotation direction, and a re-start of dewatering is performed. Thus, it is possible to carry on a dewatering process without stopping on the way, especially when the amount of clothing is small.

Description

  The present invention relates to a drum type washing machine for washing laundry contained in a rotating drum.

  Conventionally, this type of drum-type washer / dryer has been designed to stop the rotation of the drum, stop the rotation of the drum, correct the unevenness of the cloth, and start up the dehydration again in order to eliminate the unbalanced state of the clothes during the dehydration. Has been proposed (for example, see Patent Document 1).

  FIG. 5 shows a flowchart of the determination and response when the imbalance abnormality of the conventional drum type washing machine described in Patent Document 1.

  In FIG. 5, when the dehydration process starts in step 100, a draining operation is performed in step 101. Thereafter, in step 102, in order to loosen the laundry such as clothes that have been offset, the rotating drum is normally rotated and reversed at a predetermined rotational speed (for example, about 40 rpm). Next, in step 103, the laundry is slowly raised to a predetermined rotational speed (about 70 rpm) that allows the laundry to stick to the inner surface of the rotary drum. Thereafter, in step 104, control is performed to maintain a predetermined rotation speed (for example, about 80 rpm) lower than the primary resonance rotation speed for a predetermined time.

  At this time, the rotation unevenness, that is, the presence / absence of unbalance is detected. If there is an unbalance greater than or equal to a predetermined value, it is determined that the rotation unevenness is large and the balance state is bad. If N = 4 is not satisfied, the rotating drum is temporarily stopped in the next step 106, then 1 is added to the current N in step 107 and the process returns to step 102. When the operations from step 102 to 107 are repeated a predetermined number of times, that is, when N = 4 in step 105, it is considered that the unevenness of the laundry has not been eliminated in the loosening process of step 102, and the process proceeds to step 108. To do. In step 108, if N is less than 10, the process proceeds to step 110, a process of supplying water into the rotary drum and correcting the bias of the laundry is performed, and the process returns to step 101. If N is 10, it is considered that the unevenness of the laundry could not be resolved, the process proceeds to step 109, an unbalance abnormality is displayed, and the operation is stopped.

  After passing through step 104, an unbalance abnormality is determined by an output signal from the vibration detecting means at step 111. If an imbalance abnormality is detected, the process proceeds to step 105 and the same processing as described above is performed. If step 111 is passed, in step 112, an unbalance abnormality is determined from the output signal from the vibration detection means. If an unbalance abnormality occurs, the process proceeds to step 105 and the same processing as described above is performed. The same processing is performed after passing through step 112 and proceeding to step 113.

  When step 113 is passed, an unbalance abnormality is determined from the output signal from the vibration detection means at step 114. If the unbalance abnormality does not occur and is normal, the rotating drum is set to the maximum number of revolutions at step 115. And turn back to step 114 for determination. If it is normal, the routine proceeds to step 115 where the maximum rotational speed is reached. On the other hand, when the vibration output value becomes larger than the threshold value in step 114, that is, when it becomes NG, the routine proceeds to step 116 where the number of rotations on the spot is maintained, and after a predetermined time operation, the operation is performed in step 117. Stop and go to the next step of step 118.

JP 2009-213803 A

  However, in the conventional configuration, when an imbalance abnormality occurs, the loosening process is performed and the redoing is started again. However, since the dehydration rotation direction is always a constant direction, the vibration form of the vibration system is changed every time. It becomes almost the same form, and for this reason, the imbalance abnormality can not be easily solved, and eventually, after performing the predetermined number of redoes, the operation was stopped, and the operation was stopped without completing the whole process There was a problem. In particular, there is a problem that the tendency is remarkable when a small amount of clothes is dehydrated.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a drum-type washing machine that prevents a dehydration start from being disabled due to an imbalance abnormality and allows the process to proceed until dehydration is completed.

  The present invention solves the above-described conventional problems, and includes a rotating drum formed in a bottomed cylindrical shape, a water tank that rotatably includes the rotating drum, a motor that rotationally drives the rotating drum, and the rotation The lower part of the vibration water tank unit consisting of a drum, water tank, motor, etc. can be swung by two support dampers and a vibration-proof damper provided in a direction in which the angle of arrangement is more inclined than the two support dampers. A washing machine housing elastically supported on the body, vibration detection means for detecting vibration provided in the water tub, rotation speed detection means for detecting the rotation speed of the motor and detecting the rotation speed of the rotating drum, the motor, etc. Control means for controlling each process such as washing, rinsing, and dehydration, and the control means rotates the rotating drum in a predetermined rotation direction during the dehydration process, and the vibration detecting means detects Shi When the vibration value exceeds a predetermined threshold value, the dehydration start-up operation is performed again.When the dehydration start-up operation exceeds a predetermined number of times, the rotating drum is rotated in the direction opposite to the predetermined rotation direction, The dehydration start-up is performed again.

  Thereby, especially when a small amount of clothes is dehydrated, the dehydration cannot be started due to an imbalance abnormality, and the dehydration process can be completed and terminated without stopping the process in the middle.

  In the drum type washing machine of the present invention, even if an imbalance abnormality occurs, the dehydration rotation direction is changed and the start-up is performed again, so that the dehydration process proceeds to the end without stopping the process halfway. be able to.

The longitudinal cross-sectional view of the drum type washing machine in embodiment of this invention Inside front view of the drum type washing machine Block diagram of the drum type washing machine Flow chart for controlling the dehydration process of the drum type washing machine Control flow chart of conventional drum type washing machine

  1st invention consists of the rotating drum formed in the bottomed cylindrical shape, the water tank which contains the said rotating drum rotatably, the motor which rotationally drives the said rotating drum, the said rotating drum, a water tank, a motor, etc. A washing machine housing that elastically supports the lower side of the vibration water tank unit by two support dampers and a vibration-proof damper provided in a direction in which the angle of arrangement is more inclined than the two support dampers; , Vibration detecting means for detecting vibration provided in the water tank, rotation speed detecting means for detecting the rotation speed of the motor to detect the rotation speed of the rotating drum, controlling the motor and the like, washing and rinsing Control means for controlling each process such as dehydration, and the control means rotates the rotating drum in a predetermined rotation direction during the dehydration process, and the vibration value detected by the vibration detection means has a predetermined threshold value. Surpassed Sometimes, the dehydration activation is performed again, and when the dehydration activation is performed over a predetermined number of times, the rotating drum is rotated in a direction opposite to the predetermined rotation direction to perform the dehydration activation again. In particular, when a small amount of clothes is dehydrated, the dehydration cannot be started due to an imbalance abnormality, and the process is not stopped halfway, and the process can be completed and terminated.

  According to a second invention, in the first invention, the vibration damping damper is provided on the right side of the rotation center, and the control means rotates the rotating drum counterclockwise in the dehydration process, and the vibration value detected by the vibration detection means is When the predetermined threshold value is exceeded, the dehydration start-up operation is performed again, and when the dehydration start-up operation exceeds the predetermined number of times, the rotating drum is rotated to the right to perform the dehydration start-up. When the water is dehydrated, the dehydration cannot be started due to an imbalance abnormality, and the process is not stopped halfway.

  According to a third invention, in the first invention, the vibration isolating damper is provided on the left side of the rotation center, and the control means rotates the rotating drum to the right during the dehydration process, and the vibration value detected by the vibration detecting means is When a predetermined threshold is exceeded, the dehydration start-up operation is performed again. When the dehydration start-up operation exceeds the predetermined number of times, the rotating drum is rotated counterclockwise to perform the dehydration start-up. When the water is dehydrated, the dehydration cannot be started due to an imbalance abnormality, and the process is not stopped halfway.

  Hereinafter, embodiments of the invention will be described with reference to the drawings. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a drum type washing machine according to an embodiment of the present invention, and FIG. 2 is a front view of the inside of the drum type washing machine as viewed from the front.

  1 and 2, a water tub 42 is swingably disposed inside a washing machine housing 41, and a rotating drum 43 is rotatably disposed in the water tub 42. A rotation shaft (rotation center shaft) 44 is provided in the horizontal direction at the rotation center of the rotating drum 43, and a motor 45 attached to the rotation shaft 44 in the vicinity of the back side of the water tank 42 is connected via a belt 46. The rotary drum 43 is rotated by 45 in the forward and reverse directions. Several protrusion plates 47 for stirring the laundry are provided on the inner wall surface of the rotating drum 43. In addition, a large number of water passage holes 48 are provided on the entire outer periphery of the rotating drum 43.

  The water tank 42, the rotary drum 43, the motor 45, and the like described above constitute a vibration water tank unit 49.

  The weight of the water tank unit 49 is supported by a plurality of dampers for damping and vibration damping attached to the lower part of the rinsing machine housing 41, and a plurality of spring bodies 50 are provided between the upper part of the washing machine housing 41 and the water tank 42. It is supported in a vibration-proof manner.

  The dampers are arranged one by one symmetrically when viewed from the front, and are disposed on the front side of the center of gravity G in the front-rear direction of the water tank unit 49, and support dampers 51 for the purpose of supporting the water tank unit 49 and suppressing vibrations, And it is arrange | positioned in the back side rather than the gravity center position G, and is comprised by the one anti-vibration damper 91 aiming at the vibration suppression of the water tank unit 49 especially. As a result, the water tank unit 49 is supported in a well-balanced manner by the respective dampers, and damping vibration isolation is performed.

  This damper is a friction damper, and a friction pad (not shown) is housed inside. A frictional force is generated by friction between the friction pad and a tube (not shown), resulting in a damping force. .

  Further, as shown in FIG. 2, the vibration damping damper 91 is disposed at a position where the compressive force acts on the water tank unit 49 in the dewatering rotation direction of the rotating drum 43. That is, during the dehydration process, when the rotation direction of the rotary drum 43 is the left rotation (counterclockwise) arrow A when viewed from the front, the center position O of the housing support portion 93 and the water tank 42 is the lower right portion when viewed from the front. The line connecting the housing support part 93 and the aquarium support part 94 is arranged at an angle α in the lower direction than the line connecting the two.

  Furthermore, the vertical mounting position of the vibration damping damper 91 with respect to the water tank unit 49 is disposed below the support damper 51 (the direction in which the installation angle is tilted), so that it is particularly horizontal (the left-right direction in FIG. 2). ) Exhibits a damping effect against vibration.

  The damping force of the support damper 51 and the vibration damping damper 91 may be the same, or the damping force of the vibration damping damper 91 may be slightly weaker than that of the support damper 51.

  Further, a casing opening (not shown) provided in the washing machine casing 41 on the front side of the water tub 42 is covered with a lid 52 so as to be openable and closable. The lid 52 connects the front of the water tub 42 and the casing opening. It can be sealed and opened through a seal packing 92 that acts as a vibration proof and water seal. By opening the lid 52, the laundry is put into and out of the rotary drum 43 through the clothing entrance 53. I can do it.

  In addition, this drum type washing machine has a function of automatically controlling the motor 45, the water supply system 54, the drainage system 55, and the water circulation system 56 according to the mode setting and control program to perform at least a washing process, a rinsing process, and a dehydrating process. is doing.

  The water supply system 54 includes a first water supply hose 59 or a second water supply hose by opening and closing the first electromagnetic valve 57 (first water supply means) or the second electromagnetic valve 58 (second water supply means). Water can be supplied from the water supply path 62 into the water tank 42 in a timely manner through the detergent storage 61 that passes through 60 and stores a detergent and a soft finish and stores a drawer (not shown) that can be pulled out from outside.

  The drainage system 55 has a drainage pipe 64 connected to a drainage port 95 provided in a recess 71 formed in the bottom of the water tank 42 when necessary, such as at the end of a washing process or at the end of a rinsing process, by driving a drainage pump 63. Through the lint filter 65 that is installed in the filter case 88 and collects lint that is removable from the outside of the front lower portion of the washing machine housing 41 by the filter knob 89, and then passes through the drainage pump 63. The water can be drained from a drain hose 66 arranged from the inside of the machine to the outside of the machine. The filter case 88 is disposed in the lower right front portion of the washing machine housing 41 for the operability of the filter knob 89. In order to efficiently connect the drain pipe 64, the drain port 95 is provided from the front side. As seen, the water tank 42 is provided on the right side of the vertical center.

  The water circulation system 56 circulates the water in the water tank 42 as necessary during the pre-washing process, the washing process, the rinsing process, and the like, thereby preventing the premature dissolution and unevenness of the detergent and improving the function of easy washing.

  The water circulation system 56 drives the circulation pump 67 to pass the washing water in the water tank 42 through the drainage filter 65 via the drainage pipe 64, and the inflow side path 68 to the circulation pump 67, the circulation pump 67 and Through the discharge side path 69 from the circulation pump 67, the water is repeatedly discharged into the rotary drum 43 as the circulating water indicated by the solid line arrow from the inner front outlet 70 of the water tank 42. A plurality of jet outlets 70 are provided in the circumferential direction, and the circulating water is discharged from all directions of the circumference.

  The recess 71 formed at the bottom of the water tank 42 is provided with a hot water heater (heating means) 72 such as a sheathed heater for heating the washing water in the horizontal direction. By discharging the washing water into the rotating drum 43 as described above, the washing water is sprinkled on the laundry and the washing water is circulated again. Since the heated washing water is sprinkled on the laundry, the molecular activity of the washing water is increased and the activation of the detergent is increased, so that the washing power can be increased and washing unevenness can be reduced. In the vicinity of the hot water heater 72, a temperature detection means 73 such as a thermistor for detecting the water temperature is provided.

  In addition, an air trap 74 is configured on the side wall of the outer periphery of the bottom of the outer tub 42 in communication with the drain pipe 64. The air trap 74 is provided inside the upper portion of the washing machine housing 41 by an air pipe 75, and is provided with a pressure sensor or the like. It is connected to the constructed water level detection means 76, and can detect the water level in a plurality of stages by the water pressure of the washing water supplied into the outer tub 42.

  In addition, the rear upper part of the detergent container 61 provided in the upper part of the washing machine housing 41 and the upper part of the water tank 42 are connected by a connecting hose 77, and the air in the water tank 42 is pressurized by the stroke operation operation. It plays the role of pulling out.

  In addition, vibration detection means 78 of an acceleration sensor that detects vibration of the water tank unit 49 is disposed on the rear surface of the upper surface of the water tank 42, and is not an acceleration in one direction, but front and rear (X axis direction), left and right (Y axis direction). ), The vibration in the three-dimensional direction in the vertical direction (Z-axis direction) is detected and the operation is controlled. This is because the actual vibration of the water tank unit 49 is not necessarily limited to one direction, and is therefore detected with high accuracy using a multi-axis acceleration sensor.

  The mode such as the driving course and various functions are selected by the user by inputting to the input setting means 80 from the operation display means 79 provided at the upper front of the washing machine housing 41, and inside the upper portion of the washing machine housing 41. The arranged control device 81 is displayed on the display means 96 (see FIG. 3) on the operation panel 79 based on the input information to notify the user.

  FIG. 3 is a block circuit diagram of the drum type washing machine in the embodiment of the present invention.

  In FIG. 3, the control means 82 of the control device 81 is constituted by a microcomputer or the like, and starts operation when power is supplied from a commercial power supply 83 by turning on the power switch 84, a water level detection means 76, a temperature detection means 73, The output of the rotational speed detection means 90 for detecting the rotational speed of the rotary drum 43 to be connected by detecting the rotational speed of the cloth amount detection means 85, the vibration detection means 78, and the motor 45 is input to the input setting means 80. The setting contents are displayed on the display means 96 based on the contents set by the user's input, and the motor 45, the hot water heater 72, the second heater are connected via the load driving means 86 constituted by a bidirectional thyristor, a relay and the like. The operations of the first solenoid valve 57, the second solenoid valve 58, the drainage pump 63, the circulation pump 67, and the like are controlled to control the steps of washing, rinsing, and dehydration. If there is any abnormality in the operation, the display means 96 displays that it is abnormal and notifies the notification means 87. The input setting means 80 and the display means 96 constitute an operation display means 79.

  About the drum type washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  FIG. 4 is a control flowchart of the dehydration process of the drum type washing machine in the embodiment of the present invention.

  In FIG. 4, when the dehydration process is started (step S1), first, the motor 45 is driven in step S2 with the intention of loosening the cloth entangled in the rotary drum 43 during the rinsing process. The rotating drum 43 is reversed left and right at (for example, about 50 r / min). Then, it is started up and rotated at 85 to 90 r / min (step S3). And the vibration value of the three-dimensional direction of the water tank unit 49 at this time is detected by the vibration detection means 78, and compared with the threshold value a (step S4). When larger than the threshold value a (NO in step S4), the rotation of the rotating drum 43 is stopped (step S19). When the number of stops is less than 20 (YES in step S20), in order to loosen the tangled clothes, Return to step S2.

  If the vibration value is smaller than the threshold value a in step S4 (YES in step S4), the vibration value is raised to 200 r / min with the left rotation (step S5). At this time, the vibration value of the water tank unit 49 at 90 to 200 r / min is detected by the vibration detecting means 78 and compared with the threshold value b (step S6). When larger than the threshold value b (NO in step S6), the rotation of the rotary drum 43 is stopped (step S19), and when the number of stops is less than 20 (YES in step S20), in order to loosen the tangled clothes, Return to step S2.

  If the vibration value is smaller than the threshold value b in step S6 (YES in step S6), the vibration value is raised to 300 r / min with the left rotation (step S7). At this time, the vibration value of the water tank unit 49 at 200 to 300 r / min is detected by the vibration detecting means 78 and compared with the threshold value c (step S8). When larger than the threshold c (NO in step S8), the rotation of the rotating drum 43 is stopped (step S19), and when the number of stops is less than 20 (YES in step S20), in order to loosen the tangled clothes, Return to step S2.

  If the vibration value is smaller than the threshold value c in step S8 (YES in step S8), the vibration value is raised to 320 r / min with the left rotation (step S9). At this time, the vibration value of the water tank unit 49 at 300 to 320 r / min is detected by the vibration detecting means 78 and compared with the threshold value d (step S10). When larger than the threshold value d (NO in step S10), the rotation of the rotating drum 43 is stopped (step S19), and when the number of stops is less than 20 (YES in step S20), in order to loosen the tangled clothes, Return to step S2.

  In step S10, when the vibration value is smaller than the threshold value d (YES in step S10), the rotation is increased to 400 r / min with the left rotation and rotated (step S11), and then is increased to 420 r / min and rotated. (Step S12). And the vibration value of the water tank unit 49 at 410-420 r / min is detected by the vibration detection means 78, and compared with the threshold value e (step S13). When larger than the threshold e (NO in step S13), the rotation of the rotating drum 43 is stopped (step S19), and when the number of stops is less than 20 (YES in step S20), in order to loosen the tangled clothes, Return to step S2.

  If the vibration value is smaller than the threshold value e in step S13 (YES in step S13), the vibration value is raised to 700 r / min while rotating left (step S14). At this time, the vibration value of the water tank unit 49 at 700 r / min is detected by the vibration detecting means 78 and compared with the threshold value f (step S15). If it is larger than the threshold value f (NO in step S15), it is determined that a further increase in the rotational speed is dangerous, and dehydration is continued for a predetermined time at the same rotational speed (step S18), and the dehydration is terminated. .

  In step S15, when the vibration value is smaller than the threshold value f (YES in step S15), the maximum rotation speed that can be reached is determined based on the detected vibration value (step S16), and the rotation speed is increased to the determined rotation speed (step S16). Step S17), dehydration is continued for a predetermined time (step S18), and the dehydration is terminated.

  In steps S4, S6, S8, S10, and S13, the vibration value exceeds the threshold value, and the process proceeds to step S19 to stop the rotation of the rotary drum 43. When the number of stops reaches 20, the process proceeds to control after step S21. The phenomenon that it is not possible to start even if the dehydration is started up to less than 20 times appears particularly when a small amount of clothing that tends to be unbalanced in the rotating drum 43 is dehydrated. In addition, although the drum stop frequency is 20 times, it may be set to less than 20 times or more than 20 times.

  In step S20, the number of drum stops is 20, and when the process proceeds to step S21, a loosening process is performed in which the rotating drum 43 is reversed left and right at a predetermined rotation speed (for example, about 50 r / min). Thereafter, the normal dewatering rotation direction that normally rotates counterclockwise is changed to the right rotation direction, and is raised to 85 to 90 r / min and rotated (step S22).

  In the case of a left turn with a small amount of clothes, the clothes are easily lifted to the upper right by the rotating drum 43. Therefore, the aquarium unit 49 tends to vibrate from the lower left to the upper right elliptical shape when viewed from the front. Is difficult to attenuate. On the other hand, when the right rotation is performed with a small amount of clothes, the clothes are easily lifted to the upper left by the rotating drum 43, and the aquarium unit 49 changes to a tendency to vibrate from the lower right to the upper left long elliptical shape when viewed from the front. The damping of the vibration damping damper 91 is easy to work and it is easy to start. For this purpose, the dehydration start is performed by changing the rotation direction to the right.

  Next, in step S23, the vibration value in the three-dimensional direction of the water tank unit 49 is detected by the vibration detecting means 78, and compared with the threshold value a as in step S4. When larger than the threshold value a (NO in step S23), the rotation of the rotating drum 43 is stopped (step S34), and when the number of stops is less than 30 times after the dehydration process starts (YES in step S35), The process returns to step S21 to loosen the clothes.

  In step S23, when the vibration value is smaller than the threshold value a (YES in step S23), the vibration value is increased to 200 r / min while being rotated right (step S24). At this time, the vibration value of the water tank unit 49 at 90 to 200 r / min is detected by the vibration detecting means 78 and compared with the threshold value b as in step S6 (step S25). If it is larger than the threshold value b (NO in step S25), the rotation of the rotating drum 43 is stopped (step S34). If the number of stops is less than 30 times (YES in step S35), in order to loosen the tangled clothes, Return to step S21.

  If the vibration value is smaller than the threshold value b in step S25 (YES in step S25), the vibration value is increased to 300 r / min while maintaining the right rotation (step S26). At this time, the vibration value of the aquarium unit 49 at 200 to 300 r / min is detected by the vibration detecting means 78 and compared with the threshold value c as in step S8 (step S27). When larger than the threshold value c (NO in step S27), the rotation of the rotating drum 43 is stopped (step S34), and when the number of stops is less than 30 (YES in step S35), in order to loosen the tangled clothes, Return to step S21.

  If the vibration value is smaller than the threshold value c in step S27 (YES in step S27), the vibration value is increased to 320 r / min while being rotated right (step S28). At this time, the vibration value of the water tank unit 49 at 300 to 320 r / min is detected by the vibration detecting means 78 and compared with the threshold value d as in Step S10 (Step S29). If it is larger than the threshold value d (NO in step S29), the rotation of the rotary drum 43 is stopped (step S3). If the number of stops is less than 30 times (YES in step S35), in order to loosen the tangled clothes, Return to step S21.

  In step S29, when the vibration value is smaller than the threshold value d (YES in step S29), the rotation is started up to 400 r / min while rotating right (step S30), and then is rotated up to 420 r / min and rotated. (Step S31). And the vibration value of the water tank unit 49 at 410-420 r / min is detected by the vibration detection means 78, and compared with the threshold value e similarly to step S13 (step S32). When larger than the threshold e (NO in step S32), the rotation of the rotary drum 43 is stopped (step S34), and when the number of stops is less than 30 (YES in step S35), in order to loosen the tangled clothes, Return to step S21.

  If the vibration value is smaller than the threshold value e in step S32 (YES in step S32), since the tangled clothing has been eliminated, the brake is temporarily applied to stop the rotation (step S33), and the process proceeds to step S14. The dehydration rotation direction is set to left rotation, and the rotation is started up to 700 r / min and rotated. At this time, the vibration value of the water tank unit 49 at 700 r / min is detected by the vibration detecting means 78 and compared with the threshold value f (step S15). If it is larger than the threshold value f (NO in step S15), dehydration is continued for a predetermined time at the same rotation speed (step S18), and dehydration is terminated.

  After the number of drum stops reaches 20 in step S20, the dehydration rotation has been changed to the right rotation direction after shifting to step S21. However, after shifting to step S14, the rotation is again turned to the left in the standard dehydration rotation direction. As described above, the drain port 95 at the lower part of the water tank 42 is provided on the right side of the vertical center of the water tank 42 as described above. This is because the moisture coming out of the water becomes difficult to get out of the drainage port 95.

  In step S35, if the number of stops of the rotating drum 43 has reached 30 after entering the dehydration process (NO in step S35), the tangling of the clothing will be resolved even if it continues further. If it is determined that it is difficult to start dehydration, the process proceeds to step S36, the dehydration is stopped, the display unit 96 displays an abnormality, and the notification unit 87 notifies.

  2, the anti-vibration damper 91 is provided on the right side of the rotation center. However, the anti-vibration damper 91 is provided on the left side of the rotation center, and the rotation direction in steps S3 to S18 is set to the right rotation. The same effect can be obtained by rotating S31 to the left.

  As described above, in this embodiment, the dehydration activation is repeated a predetermined number of times, and when the dehydration activation is over the predetermined number of times, the rotating drum is rotated in the reverse rotation direction to start the dehydration. With this configuration, the dehydration cannot be started due to imbalance abnormality, especially when a small amount of clothes is dehydrated, and the process can be completed and terminated without stopping the process halfway. .

  As described above, the drum-type washing machine according to the present invention can increase the probability that it can be started by changing the rotation direction when the dehydration is started again. Applicable to usage.

DESCRIPTION OF SYMBOLS 41 Washing machine housing 42 Water tank 43 Rotating drum 45 Motor 49 Water tank unit 51 Support damper 78 Vibration detection means 82 Control means 90 Rotation speed detection means 91 Anti-vibration damper

Claims (3)

A rotating drum formed in a bottomed cylindrical shape, a water tank that rotatably includes the rotating drum, a motor that rotationally drives the rotating drum, and a vibrating water tank unit that includes the rotating drum, the water tank, and the motor. The lower side is provided with two support dampers, a washing machine housing elastically supported by a vibration-proof damper provided in a direction in which the installation angle is tilted more than the two support dampers, and the water tank. Vibration detection means capable of detecting vibration, rotation speed detection means for detecting the rotation speed of the motor to detect the rotation speed of the rotating drum, and each step of washing, rinsing, dehydration, etc. by controlling the motor and the like And control means for controlling the rotation of the rotating drum in a dehydration process in a predetermined rotation direction, and when the vibration value detected by the vibration detection means exceeds a predetermined threshold, Of it performs redo operation, when a dehydration start of redo operation exceeds a predetermined number, wherein the rotating drum said predetermined rotational direction is rotated in the reverse direction, the drum type washing machine for performing rework dehydration started. An anti-vibration damper is provided on the right side of the rotation center, and the control means rotates the rotating drum counterclockwise in the dehydration process, and restarts dehydration when the vibration value detected by the vibration detection means exceeds a predetermined threshold. The drum type washing machine according to claim 1, wherein the drum type washing machine is operated to perform dehydration activation by rotating the rotating drum to the right when the dehydration activation reoperation has exceeded a predetermined number of times. An anti-vibration damper is provided on the left side of the rotation center, and the control means rotates the rotating drum to the right during the dehydration process, and restarts dehydration when the vibration value detected by the vibration detection means exceeds a predetermined threshold. The drum type washing machine according to claim 1, wherein the drum type washing machine is operated to perform dehydration activation by rotating the rotating drum counterclockwise when the dehydration activation reoperation has exceeded a predetermined number of times.

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