JP2014217643A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely complete dewatering of laundry.SOLUTION: A washing machine includes: a water tub 3 rotatably installed inside a washing/dewatering tub 4; driving means 7 for rotating the washing/dewatering tub 4; a water supply valve 16 for supplying water; drainage means 13 for draining water; and control means 20 for controlling the driving means, the water supply valve and the drainage means according to a washing sequence in which laundry 21 is washed, rinsed and dewatered. When abnormality of the driving means 7 is detected in a dewatering step, the control means 20: stops the dewatering step; performs correction rinsing in which water is supplied from the water supply valve 16 for rinsing; and, after the correction rinsing, performs a correction rinsing dewatering step by making time t2' in which rotational frequency N of the washing/dewatering tub 4 reaches rotational frequency N2 longer than time t2 in which the rotational frequency N of the washing/dewatering tub 4 reaches the rotational frequency N2. Thereby, even when a predetermined amount or more of the laundry 21 made of a fiber material of soft nap-raised finishing such as fleece and containing a large amount of moisture is included, a state where the laundry 21 cannot be dewatered can be prevented, and washing can be completed by dewatering surely.

Description

  The present invention relates to a washing machine that reliably dehydrates and finishes various objects to be cleaned.

  Conventionally, this type of washing machine 1 is configured as shown in FIG. Hereinafter, the configuration will be described.

  In the longitudinal sectional view of the conventional washing machine 1 shown in FIG. 1, the washing machine 1 has a water tank 3 suspended by a suspension rod 2 so that a washing and dewatering tank 4 can rotate inside the water tank 3 during dehydration. Provided. The washing and dewatering tank 4 has a pulsator 5 rotatably disposed at the bottom, and a lower blade 6 is provided integrally with the pulsator 5. The driving means 7 drives the pulsator 5 or the washing / dehydrating tub 4 via the speed reduction mechanism 8 and the rotating shaft 9.

  The lint water channel 10 is provided so as to extend from the pump chamber 11 on the outer periphery of the lower blade 6 of the pulsator 5 to the upper part or middle part of the washing and dewatering tub 4, and a detachable lint filter 12 is provided on the upper part or middle part.

  The drainage means 13 is constituted by a drainage valve 14 and a drainage hose 15, drains washing water and rinse water in the water tank 3, and a water supply valve 16 supplies water into the water tank 3.

  The washing / dehydrating tub 4 is provided with a drain hole 4a on the side surface, and the washing / dehydrating tub 4 is driven when the washing water or the rinsing water in the water tub 3 and the washing / dehydrating tub 4 has been drained. 7, the object to be cleaned 21 receives a centrifugal force and moves to the side surface of the washing and dewatering tank 4, and the washing water and the rinsing water contained in the object to be cleaned 21 are washed and dewatered by the centrifugal force. It moves to the water tank 3 through the drain hole 4a provided in the side surface. The size of the drain hole 4a is such a size that the hook of the brassiere is not caught.

  A fluid balancer 17 for reducing vibration during dehydration is provided on the upper part of the washing and dewatering tank 4.

  A lid 19 is provided on the upper frame 18 constituting the upper part of the washing machine 1 so as to be freely opened and closed, and a control means 20 is provided in front of the lid 19.

  The operation in the above configuration will be described. The object to be washed 21 that the user wants to wash is put into the washing and dewatering tub 4 together with the detergent, and a start button (not shown) is pushed, so that a predetermined amount of washing water is supplied from the water supply valve 16. It is supplied to the water tank 3. When the washing water is supplied, the pulsator 5 is rotated at a predetermined number of revolutions by the driving means 7 through the speed reduction mechanism 8 and the rotating shaft 9, so that the washing water and the object to be cleaned 21 in the washing and dewatering tub 4 are removed. A washing step of stirring and removing dirt from the object to be cleaned 21 is performed.

  When the washing process for a predetermined time is completed, the drain valve 14 is operated to drain the washing water in the water tub 3, and when the drainage is finished, the washing and dewatering tub is driven by the driving means 7 via the speed reduction mechanism 8 and the rotating shaft 9. 4 rotates at a predetermined number of revolutions, and a first dehydration process is performed in which the washing water contained in the article to be cleaned 21 is separated from the article to be cleaned 21 and drained.

  When the first dehydration step is performed for a predetermined time, a predetermined amount of rinsing water is again supplied from the water supply valve 16 to the water tank 3, and the pulsator 5 rotates at a predetermined number of rotations, thereby rinsing water in the washing and dewatering tank 4. Further, a rinsing process is performed in which the cleaning target 21 is stirred to remove the detergent components remaining on the cleaning target 21.

  When the rinsing process for a predetermined time is completed, the drain valve 14 is operated to drain the rinsing water in the water tank 3, and when the drainage is finished, the washing and dewatering tank 4 is rotated at a predetermined rotational speed by the driving means 7, A second dehydration process is performed in which the rinse water contained in the object to be cleaned 21 is separated from the object to be cleaned 21 and drained. Thereafter, the rinsing water is supplied again, and the final rinsing process is performed.

  When the final rinsing process is finished, the rinsing water in the water tank 3 is drained, and when the drainage is finished, the washing and dewatering tank 4 is rotated at a predetermined number of revolutions by the driving means 7, and the rinsed object 21 contains A final dehydration step of separating and draining water from the object to be cleaned 21 is performed, and the operation is completed.

  As shown in FIG. 2, the dehydration sequence A in the first dehydration process, the second dehydration process, and the final dehydration process includes, for example, the rotation speed N of the washing / dehydration tank 4 and the water tank 3 during the dehydration time t1. Is increased to a rotational speed N1 (about 120 r / min) exceeding a primary resonance rotational speed (about 100 r / min) that vibrates greatly in the lateral direction. During this period, the rotational speed of the washing and dewatering tub 4 is increased and the resonance rotational speed is passed quickly. Next, the rotational speed is increased between the rotational speed N2 (about 300 r / min) during the dehydration time t2 after the rotational speed reaches N1. During this time, in order to move the balancer liquid in the fluid balancer 17, the washing and dewatering tub 4 is rotated at a reduced rotational speed. After the rotation speed reaches N2, in order to shorten the dehydration time, the degree of increase in the rotation speed is increased again to rotate to the rotation speed N3 during the dehydration time t3. When the rotational speed reaches N3, dehydration is performed for a predetermined time in the state of the rotational speed N3.

  Further, as shown in FIG. 1, when the object to be cleaned 21 is shifted to one side in the washing / dehydrating tub 4 at the start of the dehydrating process or during the dehydrating process, the vibrations of the washing / dehydrating tub 4 and the water tub 3 are caused. Will become bigger. When the vibrations of the washing / dehydrating tub 4 and the water tub 3 are increased, the rotational speed N of the washing / dehydrating tub 4 and the driving means 7 does not reach the predetermined dehydrating speed N3 within a predetermined time, or the current value of the driving means 7 is increased. Since the rotational speed N of the driving means 7 becomes higher than the current value when rotating at the predetermined rotational speed N3, the rotational speed N and current value of the driving means 7 are detected, or the vibration of the water tank 3 is directly detected. If the detected value falls below a certain threshold value or more than the threshold value, it is judged as abnormal, the dehydration process is stopped, rinsing water is supplied from the water supply valve 16, the pulsator 5 is stirred, and the object to be cleaned The correction rinse which corrects that 21 has shifted to the washing and dewatering tank 4 is performed at least once. When the correction rinsing for a predetermined time is completed, the dehydration process is performed according to the dehydration sequence A shown in FIG.

  Similarly, when the detergent is added in a larger amount than the predetermined amount, a large amount of foam is generated in the washing process, the rinsing process, and the dehydrating process, but the gap 22 between the washing / dehydrating tub 4 and the water tub 3 during the dehydrating process. If there is more than a predetermined amount of foam, a large amount of foam adheres to the outer side surface of the washing and dewatering tub 4 and the inner side surface of the water tub 3 to cause rotation resistance, and the driving means 7 is overloaded. Since the driving means 7 does not reach the predetermined rotational speed within a predetermined time or the current value becomes higher than the predetermined value, the rotational speed N and the current value of the driving means 7 are detected in this case as well. When the overload to the driving means 7 is detected, the dehydration process is stopped, and the rinsing process is performed by supplying the rinsing water from the water supply valve 16 and stirring the pulsator 5. Since the rinsing water is supplied to the washing / dehydrating tub 4, the concentration of bubbles remaining in the washing / dehydrating tub 4 can be reduced and the bubbles themselves can be defoamed. When the correction rinsing for a predetermined time is completed, the dehydration process is performed according to the dehydration sequence A shown in FIG.

It should be noted that in the dehydration process after the correction rinse, the deviation of the object to be cleaned 21 is large again, the vibration of the washing / dehydrating tub 4 and the water tub 3 is increased, or the defoaming is insufficient and the foam is If it becomes a resistance to rotation, the correction rinsing is performed again.

  Further, the modified rinsing is performed when the rotation speed N of the washing and dewatering tub 4 does not reach the predetermined dehydration speed N3 within a predetermined time in the first and second dehydration processes performed after the washing process or after each rinsing process. This is performed when the current value of the driving means 7 is equal to or greater than the predetermined value, but any correction rinsing is performed after the washing process, so that, for example, the first dehydration process after the washing process is rinsed. Even in the dehydration process after rinsing, if the rotation speed N of the washing and dewatering tub 4 does not reach the dehydration predetermined rotation speed N3 or the current value of the driving means 7 is equal to or greater than the predetermined value, the correction is rinsed again. When the correction rinsing is repeated many times, the object to be cleaned 21 is rinsed with new water each time the correction rinsing is performed. Therefore, when the correction rinsing is repeated a plurality of times, the process proceeds to the next rinsing process. Even so doing rinsed with only the new rinse water number of repetitions of an object to be cleaned 21 is corrected rinsing, so do not rinsing performance is decreased, there is no problem even if the process proceeds to the next rinsing cycle.

  The same applies to the modified rinsing performed after the rinsing process.

  In FIG. 2, the rotation speed N of the washing and dewatering tub 4 is constantly increased until it reaches N3, but it may be rotated at the same rotation speed for a certain period of time.

  The washing sequence is described as washing-first dehydration-rinsing-second dehydration-final rinsing-final dehydration process. Also good.

Japanese Patent No. 4206865 JP 2000-24373 A

However, the configuration of the conventional washing machine 1 as shown in FIGS. 1 and 2 has the following problems.
When the object to be cleaned 21 is a trainer, cotton such as towels, jeans, underwear, etc., in the final dehydration process, there is no particular problem in the dehydration sequence A as shown in FIG. The dewatering predetermined rotation speed N3 is reached and the dehydration predetermined rotation speed N3 is maintained for the predetermined dehydration time, so that the rinse water contained in the article to be cleaned 21 passes through the drain hole 4a of the washing and dewatering tank 4. It is separated into the water tank 3 by centrifugal force and discharged out of the washing machine 1. As a result, predetermined dewatering performance can be obtained.

On the other hand, the fiber material to be cleaned 21 having a soft brushed finish like a fleece has a very high water content when wet with water (L-size trainer: (about 1500 g when wet). )-(About 400 g when dry cloth) = (water content 1100 g), L size fleece: (about 3000 g when wet)-(about 400 g when dry cloth) = (water content 2600 g), the water content is about 1500 g. In addition, a lot of water is dehydrated at a low rotation speed of the washing and dewatering tub 4 (trainer: water is removed from about 300 r / min, whereas fleece: about 150 to 300 r / min) To remove most of the water). For this reason, a fiber material with a soft brushed finish such as a fleece can contain a large amount of water, and a predetermined amount or more of the object to be cleaned 21 in which most of the water is dehydrated even when the washing and dewatering tub 4 rotates at a low speed is input. (For example, when up to 4 fleece sheets are described in the instruction manual and 6 sheets are inserted, etc.), the vibrations of the washing and dewatering tank 4 and the water tank 3 are within a predetermined range at the time of dehydration. Even if there are no bubbles, the amount of water coming out of the object to be cleaned 21 into the gap 22 of the water tank 3 is larger than the amount of water drained from the water tank 3, the drain valve 14 and the drain hose 15. Since a predetermined amount or more of water accumulates in the gap 22 of the water tank 3 and the washing / dehydration tank 4 rotates, the water staying in the gap 22 of the water tank 3 becomes resistance to the rotation of the washing / dehydration tank 4, and driving means 7 is overloaded.

  As a result, the overloading of the driving means 7 is detected, the final dehydration process is stopped, and the rinsing water is supplied from the water supply valve 16 to perform the rectifying rinse that stirs the pulsator 5. In this case, a large amount of water comes out again from the object to be cleaned 21, and the water stays in the gap 22 of the water tank 3 to become the resistance of the washing / dehydration tank 4, and the driving means 7 is overloaded and the dehydration process is performed. The problem is that the rinsing process will be repeated forever. (For the final dehydration process, the process will move to the next process even if the rinsing process is repeated many times.) Can not).

  In addition, since the fiber object to be cleaned 21 having a soft brushed finish, like a fleece, loses a large amount of water at a low rotation, the balance of the balance of the fluid balancer 17 follows the balance of the fluid balancer 17 greatly. Since the balancing effect of the fluid balancer 17 is reduced, the water tank vibration is increased, the overload of the driving means 7 is detected, the final dehydration process is stopped, and the rinse water is supplied from the water supply valve 16. Although the correction rinsing for stirring the pulsator 5 is performed, even in the dehydration process performed after the correction rinsing, a large amount of water comes out again from the object to be cleaned 21, and the vibration of the water tank 3 increases and the driving means 7 is excessively passed. There is a problem that the rinsing is repeated forever, that is, the load is applied and the dehydration process is stopped and the rinsing is performed.

  In the final dehydration process, if the correction rinse is repeated a plurality of times, there is a means for forcibly terminating the operation and displaying an error and informing the user. In this case, the object to be cleaned 21 is not dehydrated. Therefore, even if the user performs a dehydration process to dehydrate the object 21 to be cleaned, the object 21 to be cleaned is left wet. As long as the object to be cleaned 21 such as fleece is not reduced to a predetermined amount or less, the correction rinsing is repeated again, and the object 21 cannot be dehydrated.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and it is an object of the present invention to surely dehydrate and finish even when a large amount of fabric material to be washed with a soft brushed finish such as a fleece is washed and dehydrated. .

  In order to solve the conventional problems, the washing machine of the present invention includes a driving unit that rotates the washing and dewatering tub, a water supply valve that supplies water into the water tub, and a drainage device that drains water in the water tub. And a control means for controlling the drive means, the water supply valve and the drainage means in accordance with a washing sequence for washing and rinsing an object to be washed and rotating the washing and dewatering tub to dehydrate. When an abnormality of the driving means is detected in the final dehydration process in the washing sequence, the final dehydration process is stopped, water is supplied from the water supply valve, and the rinse is corrected and then the corrected rinse dehydration process is performed. In the modified rinsing and dewatering process, the time for the washing and dewatering tub to reach a predetermined rotational speed is set longer than the time for the washing and dewatering tub to reach a predetermined rotational speed in the final dewatering process. Than is.

  As a result, even if a fiber material with a soft brushed finish such as a fleece contains an object to be cleaned that contains a large amount of moisture, the rinse and dehydration are repeated many times, and the object to be cleaned cannot be dehydrated. Can be prevented, and can be reliably dehydrated and terminated.

  Even if the washing machine of the present invention includes a predetermined amount or more of an object to be cleaned containing a lot of moisture with a soft brushed fiber material such as a fleece, the correction rinsing and dehydration are repeated many times. It is possible to prevent a state where dehydration cannot be performed, and it is possible to reliably dehydrate and finish the process.

Longitudinal sectional view of the first embodiment of the present invention and the conventional washing machine in the front-rear direction The figure showing the dehydration sequence of the washing and dehydration tank in the dehydration process of the washing machine The figure showing the spin-drying | dehydration sequence of the washing / dehydration tank in the spin-drying | dehydration process after the correction | amendment rinse of the 1st Embodiment of this invention

  The first invention is a washing means for rinsing the object to be cleaned, a driving means for rotating the washing and dewatering tank, a water supply valve for supplying water into the water tank, a drain means for draining water in the water tank, And a control means for controlling the drive means, the water supply valve and the drainage means in accordance with a washing sequence for rotating and dewatering the washing and dewatering tub, the control means in the final dehydration process in the washing sequence When an abnormality of the means is detected, the final dehydration process is stopped, water is supplied from the water supply valve, and the rinse is corrected and rinsed, and then the corrected rinse dehydration process is performed. The time for the dewatering tank to reach the predetermined number of revolutions is set longer than the time for the washing and dewatering tank to reach the predetermined number of revolutions in the final dewatering process.

  As a result, the fiber material of soft brushed finish like fleece makes the water of the object to be washed dehydrated much even when the rotation speed of the washing and dehydration tank is low. Since the water remaining in the gap between the washing / dehydrating tub and the water tub can be reduced by discharging into the gap between the washing tub and the water tub, the number of rotations of the washing / dehydrating tub can be reduced to the predetermined number of rotations for a predetermined time. Even if it is raised, water does not stay in the gap between the washing and dewatering tub and the water tank so that the washing and dewatering tub rotates and the driving means is overloaded, The washing and dewatering tub can rise to a predetermined number of rotations for dewatering.

  In addition, since water gradually escapes from objects to be cleaned such as fleece, fluctuations in the weight balance are small and followability of the balancer liquid of the fluid balancer is improved, so that the vibration of the water tank is reduced. The means is not overloaded, and the washing and dewatering tub can rise to a predetermined number of rotations for dewatering. As a result, the washing and dewatering tub can be rotated at a predetermined rotation speed for a predetermined time, and a predetermined dewatering performance of the object to be cleaned can be obtained and the operation can be terminated.

  Therefore, even if the fiber material has a soft brushed finish such as fleece and contains a large amount of moisture, the washing and dehydrating tank contains a to-be-washed object that can be removed at a low speed and most of the moisture is removed. It is possible to prevent the state in which the object to be cleaned cannot be dehydrated by repeating the process many times, and it is possible to reliably dehydrate and finish the process.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In addition, the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description.

(Embodiment 1)
In the washing machine 1 shown in FIG. 1, a water tub 3 is suspended by a suspension rod 2, and a washing and dewatering tub 4 is provided inside the water tub 3 so as to be able to spin and dehydrate. The washing and dewatering tub 4 has a pulsator 5 rotatably disposed at the bottom, and a lower blade 6 is provided integrally with the pulsator 5. The driving means 7 drives the pulsator 5 or the washing / dehydrating tub 4 via the speed reduction mechanism 8 and the rotating shaft 9.

  The lint water channel 10 is provided so as to extend from the pump chamber 11 on the outer periphery of the lower blade 6 of the pulsator 5 to the upper part or middle part of the washing and dewatering tub 4, and a detachable lint filter 12 is provided on the upper part or middle part. ing.

  The drainage means 13 is constituted by a drainage valve 14 and a drainage hose 15, and drains washing water and rinsing water in the aquarium 3, and a water supply valve 16 feeds washing water and rinsing water into the aquarium 3. is there.

  A drain hole 4a is provided on the side surface of the washing / dehydrating tub 4 so that the washing / dehydrating tub 4 is driven in the state where draining of the washing water or rinsing water in the water tub 3 and the washing / dehydrating tub 4 is completed. Is rotated, the object to be cleaned 21 receives a centrifugal force and moves to the side surface of the washing and dehydrating tub 4, and the washing water and the rinsing water contained in the object to be cleaned 21 are stored in the washing and dehydrating tub 4 by the centrifugal force. It moves to the water tank 3 through the drain hole 4a provided in the side surface. The size of the drain hole 4a is such a size that the hook of the brassiere is not caught.

  A fluid balancer 17 for reducing vibration during dehydration is provided on the upper part of the washing and dewatering tub 4.

  A lid 19 is provided on the upper frame 18 constituting the upper part of the washing machine 1 so as to be openable and closable, and a control means 20 for controlling the drain valve 14, the water supply valve 16 and the driving means 7 is provided in front of the lid 19. .

  To explain the operation in the above configuration, the user opens the lid 19, puts an object to be cleaned 21 such as clothes into the washing and dewatering tub 4, turns on the washing machine 1, and presses a start button (not shown). Then, the pulsator 5 rotates forward and backward by the driving means 7 to detect the amount of the object 21 to be cleaned. Then, since the amount of detergent required is displayed on the operation unit (not shown), the user puts a predetermined amount of detergent into a predetermined position (may be in the washing and dehydrating tank 4), and closes the lid 19 to supply water. A predetermined amount of washing water is supplied from the valve 16 into the washing and dewatering tub 4.

  When a predetermined amount of washing water is supplied, the pulsator 5 rotates forward and backward to perform the washing process of washing the article 21 to be cleaned.

  When the washing process for a predetermined time is completed, the washing water in the water tank 3 is drained out of the washing machine 1 by the drain valve 14. When the washing water is drained, the washing and dewatering tub 4 is rotated at a predetermined rotational speed by the driving means 7 so that the washing water contained in the article to be washed 21 is separated from the article to be washed 21 and drained. One dehydration process is performed.

  When the first dehydration process is completed, a predetermined amount of rinsing water is again supplied from the water supply valve 16 to the water tank 3, the pulsator 5 rotates forward and reverse, and the first rinsing process is performed to rinse the object 21 to be cleaned. When the first rinsing process is completed, the rinsing water in the water tub 3 is drained out of the washing machine 1, and the washing and dewatering tub 4 is rotated at a predetermined rotational speed by the driving means 7, so that the article to be cleaned 21 contains. A second dehydration step is performed in which the rinse water is separated from the cleaning object 21 and drained. Further, the rinsing water is supplied and a final rinsing process is performed. Thereafter, the rinsing water in the water tub 3 is drained, and a final dehydration process is performed in which the washing and dewatering tub 4 rotates at a predetermined rotational speed.

  When the final dehydration process is performed, the operation ends.

In the dewatering sequence A in the first dewatering process, the second dewatering process, and the final dewatering process, as shown in FIG. 2, the water tank 3 is moved in the horizontal direction during the dewatering time t1 with the rotation speed N of the washing and dewatering tank 4. The rotational speed is increased to a rotational speed N1 (about 120 r / min) exceeding a primary resonant rotational speed (about 100 r / min) that vibrates greatly. During this period, the rotational speed of the washing and dewatering tub 4 is increased and the resonance rotational speed is passed quickly. Next, the rotational speed is increased between the rotational speed N2 (about 300 r / min) during the dehydration time t2 after the rotational speed reaches N1. During this time, in order to move the balancer liquid in the fluid balancer 17, the washing and dewatering tub 4 is rotated at a reduced rotational speed. After the rotation speed reaches N2, in order to shorten the dehydration time, the degree of increase in the rotation speed is increased again to rotate to the rotation speed N3 during the dehydration time t3. When the rotational speed reaches N3, dehydration is performed for a predetermined time in the state of the rotational speed N3.

  When the object to be cleaned 21 is shifted to one side surface in the washing / dehydrating tub 4 at the start of the dehydration process or in the middle of the dehydration process, the vibrations of the washing / dehydrating tub 4 and the water tub 3 increase. When the vibrations of the washing / dehydrating tub 4 and the water tub 3 increase, the rotational speed N of the washing / dehydrating tub 4 and the driving means 7 does not reach the predetermined rotational speed N2 within a predetermined time, or the current value of the driving means 7 Since the rotational speed N of the driving means 7 becomes higher than the current value when the dehydration is rotating at the predetermined rotational speed N2, the rotational speed N and the current value of the driving means 7 are detected, or the vibration of the direct water tank 3 is detected. If the detected value falls below a certain threshold value or above a certain threshold value, it is judged abnormal, the dehydration process is stopped, rinse water is supplied from the water supply valve 16 and the pulsator is stirred, The correction rinse which corrects that 21 has shifted to the washing and dewatering tank 4 is performed at least once.

  Similarly, when the detergent is added in a larger amount than the predetermined amount, a large amount of foam is generated in the washing process, the rinsing process, and the dehydrating process, but after the rinsing process during the first dehydrating process after the washing process. If a predetermined amount or more of foam is present in the gap 22 between the washing / dehydrating tub 4 and the water tub 3 during the second dehydration process, a large amount of foam adheres to the outer side surface of the washing / dehydrating tub 4 and the inner side surface of the water tub 3. As a result, rotation resistance is generated, and the driving means 7 is overloaded. Also in this case, the driving means 7 does not rotate at a predetermined rotational speed within a predetermined time or the current value becomes higher than a predetermined value. Therefore, the driving means 7 is detected by detecting the rotational speed N and the current value of the driving means 7. 7 can be detected, and when the overload is detected, the dehydration process is stopped, rinse water is supplied from the water supply valve 16, the pulsator 5 is stirred, and the object to be cleaned 21 is rinsed at least. Do it once. Since new rinsing water is supplied to the washing / dehydrating tub 4, the concentration of foam remaining in the washing / dehydrating tub 4 can be reduced or the bubbles themselves can be defoamed.

  When the correction rinsing for a predetermined time is completed, the correction rinsing dehydration process is performed as shown in FIG. That is, after the driving means 7 rotates the washing / dehydrating tub 4 to the rotational speed N1 (about 120 r / min) during the dewatering time t1, the rotation of the washing / dehydrating tub 4 is rotated to the rotational speed N2 (about 300 r / min). However, the dehydration time t2 ′ reaching the rotational speed N2 from the start of dehydration is made longer than the dehydration time t2 that was scheduled to be executed if no abnormality was detected.

  That is, when t2 ′> t2 (t2 ′ is approximately twice t2), the washing and dewatering tub 4 is rotated, and when the rotation speed N of the washing and dewatering tub 4 reaches N2, the same as the dehydration sequence A. In addition, the dehydration is rapidly rotated to a predetermined rotation speed N3.

  The above-described correction rinsing to the correction rinsing dehydration process are performed in the same manner even when the correction rinsing is performed in the final dehydration process.

As described above, after the correction rinsing, the rotation of the washing / dehydrating tub 4 is slowly increased to the rotation speed N2, so that a large amount of water is dehydrated even if the rotation speed of the washing / dehydration tub 4 is low like a fleece. The water in the object to be cleaned 21 is gradually discharged into the gap 22 between the washing / dehydrating tub 4 and the water tub 3, and the water staying in the gap 22 between the washing / dehydrating tub 4 and the water tub 3 is discharged outside the washing machine 1. Since it can be reliably discharged, the gap 22 between the washing / dehydrating tub 4 and the water tub 3 from the object to be cleaned 21 to such an extent that the washing / dehydrating tub 4 becomes a resistance to rotate and the driving means 7 is overloaded. Thus, the washing and dewatering tub 4 can rise to the predetermined dehydration speed N2 without water coming out.

  Further, since the moisture is gradually removed from the object 21 to be cleaned, the fluctuation of the weight balance is reduced, the followability of the balancer liquid of the fluid balancer 17 is improved, the balancing effect is increased, and the vibration of the water tank 3 is reduced. The washing and dewatering tub 4 can rise to the predetermined dehydration speed N2 without overloading the means 7.

  As a result, the washing and dewatering tub 4 can be rotated for a predetermined time for dewatering at a predetermined speed N2 for dewatering, and the object to be cleaned 22 can obtain a predetermined dewatering performance and the operation can be terminated.

  As shown in FIG. 3, after the abnormality is detected and corrected in the final dehydration process, the dehydration time t2 ′ until the rotation speed N2 is reached is determined as the rotation speed N2 in the dehydration process when the abnormality is detected. If the dehydration sequence that is longer than the dehydration time t2 until reaching the value is performed not only after the correction rinsing performed by detecting an abnormality in the final dehydration process, but also after all the correction rinses, When the object 21 to be cleaned is a predetermined amount or more of a fiber material having a soft brushed finish such as a fleece, as described above, the first dehydration process and the rinsing process after the cleaning process are performed. Even in the subsequent second dehydration process, the abnormality is detected and the correction rinse is performed. However, the washing and dehydration tank 4 can be rotated at a predetermined rotation speed N2 by the dehydration sequence of the corrected rinse dehydration process after the correction rinse. .

  As described above, the washing machine according to the present invention can be reliably dehydrated and finished, so that it can be applied not only to a household washing machine but also to a commercial washing machine.

DESCRIPTION OF SYMBOLS 1 Washing machine 3 Water tank 4 Washing and dewatering tank 5 Pulsator 7 Driving means 13 Draining means 16 Water supply valve 17 Fluid balancer 20 Control means 21 Object to be cleaned

Claims (1)

A water tub with a washing and dewatering tub set inside,
Driving means for rotating the washing and dewatering tub;
A water supply valve for supplying water into the water tank;
Drainage means for draining water in the aquarium;
A control means for controlling the drive means, the water supply valve, and the drainage means according to a washing sequence for washing and rinsing an object to be washed and rotating and dehydrating the washing and dewatering tub;
When the control means detects an abnormality of the driving means in the final dehydration process in the washing sequence, the final dehydration process is stopped, water is supplied from the water supply valve, and the rinse is corrected, and then the correction is performed. Rinse dehydration process
In the modified rinsing and dewatering process, the time for the washing and dewatering tub to reach a predetermined number of rotations is longer than the time for the washing and dewatering tub to reach a predetermined number of rotations in the final dewatering process.

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