JPH09776A - Finishing material feeding method for washing machine - Google Patents

Abstract

PURPOSE: To provide a washing machine capable of sufficiently demonstrating a finishing material effect even when the number of times of rinsing is increased considering that dehydrating rinsing becomes insufficient when bathtub water is supplied at the time of washing without uselessly using water for feeding a finishing material. CONSTITUTION: The dehydrating rinsing is executed and then, water storing rinsing is executed (S16). When a result that the dehydrating rinsing is insufficient is obtained (S14), the number of times of the water storing rinsing is increased (S18 and 22). Then, at the time of the final water storing rinsing, the finishing material is fed into a washing and dehydrating tank (S21). The finishing material is fed before a lowest water storing rinsing water level is detected at the time of supplying water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine, and more particularly to a washing machine in which a finishing agent such as a softening agent is automatically added at the time of final rinsing.

[0002]

2. Description of the Related Art Japanese Patent Publication No. 57-29200 discloses that the water supply capacity for a washing / dehydrating tub at the time of washing is determined.
A washing machine is shown which controls the time during subsequent rinsing based on this judgment. A water level sensor that detects the water level in the washing / dehydrating tub is used to determine the water supply capacity, and the water level in the washing / dehydrating tub detected by the water level sensor reaches a predetermined value to cause the washing / dehydrating tub to reach a predetermined amount. Water supply capacity is judged based on the time required to collect water. The longer this required time, the smaller the water supply capacity.

By the way, the above-mentioned rinsing is usually performed a plurality of times, for example, twice, first a so-called water-pouring rinsing is performed in which the water supply is continued even after supplying a predetermined amount of water, and a second time is performed after supplying a predetermined amount of water. So-called rinsing is performed because the water supply is stopped. For this reason, in rinsing (final rinsing), a finishing agent such as a softening agent is put into the washing / dehydrating tank as shown in Japanese Patent Publication No. 62-1754, and the finishing agent is treated.

However, recently, as a water-saving washing machine, in order to suppress the amount of water used at the time of rinsing as much as possible, the first rinsing is a dehydration rinsing instead of a water pouring rinsing. In this dehydration rinse, water is supplied to the washing / dehydrating tub so that the water soaks into the entire laundry, and if soaked, the water supply is stopped and the washing / dehydrating tub is rotated at high speed to perform dehydration. Rinsing is carried out with the water. Further, in this dehydration rinsing, the water needs to be supplied only to such an extent that the water soaks into the laundry, the amount of water used can be suppressed, and water can be saved.

Thus, in this way, of the two rinses,
In the washing machine that first performs dehydration rinsing and then the second rinse, in the case of using the above-described technique of controlling the rinsing time based on the judgment of the water supply capacity at the time of washing, regarding the first dehydration rinsing, It is advisable to adjust the water supply time so that the water soaks into the laundry. For the second rinse, water is supplied until a predetermined amount of water is accumulated, then water supply is stopped and then rinse is performed. Since the accumulated rinse performance is not affected by the water supply capacity, the water supply capacity is judged. There is no time control based on.

[0006]

In the above washing machine, water is normally supplied to the washing / dehydrating tank from the tap when washing, and the same is true when rinsing. However, in order to effectively use the bath water, there is a case where the bath water is supplied to the washing / dehydrating tank using a bucket, a bath water feed pump, or the like at the time of washing.

In this case, the water supply capacity using a bucket, a bath water water supply pump, or the like is different from the water supply capacity from the water faucet which is used for rinsing. Therefore, even if the water supply time in the dehydration rinsing at the time of rinsing is adjusted based on the judgment of the water supply capacity at the time of washing, satisfactory dehydration rinsing cannot be performed.

Even when water is supplied from a tap at the time of washing, if the water supply capacities at the time of washing and dewatering and rinsing are different due to changes in water pressure, there is a risk that satisfactory dewatering and rinsing cannot be performed.

In any case, if the water supply capacity at the time of dewatering and rinsing can be separately judged, the water supply time at the time of dewatering and rinsing can be accurately adjusted based on this judgment. However, since the judgment of water supply capacity is made based on the time required to accumulate a predetermined amount of water in the washing and dehydrating tub, it is only possible to allow the water to soak into the laundry, as in the case of dehydration rinsing. In a situation where a predetermined amount of water is not stored in the washing / dehydrating tank without performing the operation, the water supply capacity cannot be determined separately.

Therefore, in addition to the water supply capacity at the time of washing, 2
To determine the water supply capacity for rinsing for the second time, compare the water supply capacities of both parties, and if the former water supply capacity is larger, determine that the first dehydration rinse is insufficient and cover this. Since it is the second time, it may be possible to control so as to increase the number of rinses.

However, the problem in this case is that when the number of times of rinsing is increased and the finishing agent is added during the first rinsing, the laundry treated with the corner finishing agent is further rinsed. As a result, the effect of the finishing agent treatment becomes extremely small.

According to the present invention, after washing, the first rinse (dehydrated rinse) and the second rinse (reserve rinse) are sequentially performed, and when the first rinse is insufficient, the number of rinses is increased for the second rinse. The present invention aims to provide a washing machine that can sufficiently exert the finishing agent effect in the second rinsing and that does not wastefully use the water for the finishing agent rinsing under a configuration that performs a satisfactory rinsing as a whole. Is.

[0013]

According to a first aspect of the present invention, a washing step of supplying water up to a predetermined washing water level to a washing / dehydrating tank to perform washing and a water supply capacity in this washing step are determined. A first water supply capacity determining step, and a first rinsing step for performing rinsing under the water supply control for the washing and dehydrating tub based on the water supply capacity determination result in the first water supply capacity determining step after the washing step. After the first rinsing step, a second rinsing step in which water is supplied to the washing / dehydrating tank to a predetermined rinsing water level to perform the rinsing and the water supply capacity in the second rinsing step is And a second water supply capacity determination step for making a determination based on a water supply time until a predetermined low water level lower than the rinse water level is reached because the water level in the inside is the lowest, and each of the water supply in the first and second water supply capacity determination steps is performed. The force determination results are compared, and when the result that the rinsing in the first rinsing step is not insufficient is made based on this comparison, the number of times of rinsing in the second rinsing step is set to 1 and then in the washing and dehydrating tub. Since the water level of the above is the lowest above, it reaches the rinse water level,
When the finish agent previously stored in the finish agent storage container is poured into the washing / dehydrating tank while flowing water, and further, based on the comparison, the result that the rinsing in the first rinsing step is insufficient is obtained. And controlling to increase the number of times of rinsing in the second rinsing step, and during the final rinsing in the second rinsing step, until the water level in the washing / dehydrating tank reaches the lowest rinsing water level, the finishing is performed. It is characterized in that the finishing agent previously stored in the agent storage container is poured into the above-mentioned washing / dehydrating tank while flowing with water.

Further, according to a second aspect of the present invention, in the first rinsing step, the water supply control for the washing / dehydrating tank based on the water supply capacity determination result in the first water supply capacity determining step, and the washing / dewatering tank. High speed rotation control of
It is characterized in that a dehydration rinsing is performed.

Further, according to a third aspect of the present invention, in the second water supply capacity determining step, the water supply capacity in the second rinsing step is set to the predetermined lower limit from the lowest detectable water level at which the water level in the washing / dehydrating tank can detect the water level. The feature is that the determination is performed based on the water supply time until the water level is reached.

Further, according to the structure of claim 4, in the first water supply capacity judging step, the water supply capacity in the washing step is such that the water level in the washing / dewatering tub is higher than the lowest detectable water level and higher than the predetermined low water level. The feature is that the determination is performed based on the water supply time until the water level is reached.

[0017]

After the washing, the first rinsing (dehydration rinsing) and the second rinsing (trimming rinsing) are sequentially executed, and the water supply control during the dehydration rinsing is performed based on the water supply capacity at the time of washing.

At this time, in order to effectively use the bath water, the bath water is supplied to the washing / dehydrating tank at the time of washing, while the water is supplied from the tap at the time of dehydration rinsing. Differently, even if the water supply control at the time of dewatering and rinsing is performed based on the water supply capacity at the time of washing, dewatering and rinsing cannot be performed satisfactorily. However, the water supply capacity is determined at the time of rinsing, the water supply capacity is compared with the water supply capacity at the time of washing, and when the result that the dehydration rinsing is insufficient is obtained based on the comparison result, the number of times of rinsing rinsing is obtained. Will increase. Therefore, the dewatering rinse shortage is covered, and the rinse as a whole becomes satisfactory.

In the rinsing, the finishing agent is added at the final rinsing even if the number of times of rinsing increases, so that the finishing agent effect is sufficiently exhibited.

In this case, since the water level in the washing / dehydrating tank is the lowest at the time of the final rinsing, the finishing agent is poured while flowing with water until it reaches the rinsing water level. Therefore, even if the predetermined rinse water level for performing rinsing is the lowest and the rinsing water level is the lowest, the water level in the washing / dehydrating tank does not exceed the predetermined rinsing water level at the end of the addition of the finishing agent, and the water is wasted. Use is suppressed and undesired thinning of the finish is suppressed.

On the other hand, when water is supplied from the tap at the time of washing and the water supply capacity in washing and dehydration rinsing is the same, and if the water supply control of the dehydration rinse is performed based on the water supply capacity at the time of washing, the dehydration rinse can be satisfactorily performed. As a result of comparison between the water supply capacity at the time of rinsing and the water supply capacity at the time of washing, the result that the dehydration rinsing is not insufficient is obtained, and the rinsing is performed only once.

Then, in this rinsing for only one time, finishing is performed from the predetermined low water level which has been already supplied for judging the water supply capacity to the rinsing water level because the water level in the washing / dehydrating tank is the lowest. Add the agent while flushing with water.
Therefore, even in this case, for example, even if the predetermined rinsing water level for performing rinsing is the lowest rinsing water level, the water level in the washing / dehydrating tank does not exceed the predetermined rinsing water level at the end of the finisher addition, The wasteful use of water is suppressed and the finish is prevented from undesirably diluting.

Further, the water supply capacity in the rinsing rinse is determined so that the water level in the washing / dehydrating tank will not exceed the rinsing water level at the time of the subsequent addition of the finishing agent (when the rinsing is only once). Therefore, it is performed based on the water supply time until the water level in the washing / dehydrating tank reaches a predetermined low water level which is lower than the rinsing water level.

However, the determination of the water supply capacity in the washing is performed based on the water supply time until the minimum washing water level higher than the predetermined low water level is reached because the finishing agent is not injected during the washing. That is, in washing, since the water supply capacity determination is performed based on the water supply time for a large water level change, the accuracy of the water supply capacity determination is good.

[0025]

FIG. 1 shows the structure of a fully automatic washing machine according to an embodiment of the present invention. Reference numeral 1 is a machine frame, 2 is an outer tub suspended and supported by four hanging rods (not shown) in the machine frame 1, and 3 has a large number of dehydration holes 4 in the periphery. The washing / dehydrating tub 3 is arranged, and the washing / dehydrating tub 3 rotates about a rotation shaft 5 provided on the bottom wall. 6 is the washing and dewatering tank 3
A rotary blade rotatably arranged at the bottom of the inside, a drive motor 7 connected to the washing / dehydrating tub 3 and the rotary blade 6 through a power transmission mechanism 8, and the drive motor 7 is for washing and rinsing. At times, only the rotary blades 6 are rotated at a low speed, and when the laundry is dehydrated (including during dehydration rinsing), the washing / dehydrating tub 3 is rotated at a high speed in one direction about the rotation shaft 5 (at this time, the rotation is performed). The wing 6 also rotates at high speed at the same time). 9
Is a first water supply pipe for supplying water to the washing and dewatering tub 3 from above, and a second water supply pipe 9a is juxtaposed on the side opposite to the first water supply pipe 9. And these 1st and 2nd water supply pipes 9 and 9a are united on the upstream side, and are combined with one water faucet. Reference numeral 10 is a first electromagnetic water supply valve provided in the middle of the first water supply pipe 9. A second electromagnetic water supply valve 10a is also provided in the middle of the second water supply pipe 9a. Reference numeral 11 is a drainage pipe provided on the bottom wall of the outer tank 2, and 12 is an electromagnetic drainage valve provided in the middle of the drainage pipe 11. Thirteen
The pressure hose 1 is attached to the air trap 14 at the bottom of the outer tank 2.
This water level sensor 1 is a water level sensor connected via 5.
The water level in the washing / dehydrating tub 3 is detected by 3 and the amount of water supplied to the washing / dehydrating tub 3 is known.

Reference numeral 16 is a water outlet of the first water supply pipe 9. As shown in detail in FIG. 2, the water outlet portion 16 has a water passage 18 having a large number of small holes 17 in the lower wall, and the water passage 1
8 and a concave portion 19 located on the lower side. Reference numeral 20 denotes a detergent container which is mounted in the recess 19 of the water outlet 16 so as to be freely taken in and out from the front. The detergent container 20 is preliminarily charged with detergent for washing. A rear wall opening 21 is provided in the lower portion of the rear wall of the detergent container 20, and a gap 22 exists between the detergent container 20 and the lower wall of the recess 19 when the detergent container 20 is mounted in the recess 19. . This gap 22
Communicates with the detergent container 20 through the rear wall opening 21. Reference numeral 23 is a handle used to pull out the detergent container 20 for introducing the detergent.

When the detergent container 20 is loaded with the detergent in advance during washing and the detergent container 20 is mounted in the recess 19, the first electromagnetic water supply valve 10 is opened and the first water supply pipe 9 is opened. The tap water that has passed through reaches the water outlet 16. Then, the tap water drops from the water passage 18 into the detergent container 20 through the many small holes 17, and the detergent container 2
0 through the rear wall opening 21 together with the detergent inside
It flows to. After that, tap water containing detergent, that is, washing water, is discharged from the front of the gap 22 to the outside of the water outlet 16 and is supplied to the washing and dehydrating tub 3.

At the time of rinsing (accumulation rinsing, dehydration rinsing), the detergent container 20 is mounted in the concave portion 19 in a state where all the detergent flows out during washing. Then, when the first electromagnetic water supply valve 10 is opened, tap water reaches the water outlet 16 and drops from the water passage 18 into the detergent container 20 through the small hole 17 as described above. However, since the detergent is no longer in the detergent container 20, tap water is left as it is in the rear wall opening 21.
Through the gap 22 to the outside of the water outlet 16 to be supplied to the washing / dehydrating tub 3.

Reference numeral 24 is a water outlet of the second water supply pipe 9a,
The water outlet portion 24 is on the opposite side of the water outlet portion 16 (FIG. 1).
And is integrally formed with the water outlet portion 16. As shown in detail in FIG. 3, the water outlet portion 24 includes a water passage 26 having two small holes 25 in the lower wall and a recess 27 located below the water passage 26. Reference numeral 28 denotes a finisher container which is mounted in the recess 27 of the water outlet portion 24 so as to be freely taken in and out from the front side. Has been done. A finishing agent such as a softening agent is previously put into the finishing agent container 28 at the time of washing. Further, in the finisher container 28, a cylindrical body 29 and a cover body 30 that covers the cylindrical body 29 except for the lower portion are provided. Also, finisher container 2
8 is mounted in the recess 27, the finish container 28 and the recess 2
There is a gap 31 between the lower wall of No. 7 and the lower wall of No. 7. The gap 31 communicates with the finisher container 28 through the tubular body 29.

When the finish agent container 28 is preliminarily charged with the finish agent and the finish agent container 28 is mounted in the recess 27, the second electromagnetic water supply valve 10a is opened. The tap water that has passed through 9a reaches the water outlet 24. And tap water is 2 from the water passage 26
It drops into the finisher container 28 through the two small holes 25 and accumulates in the container 28. The second electromagnetic water supply valve 10a includes a container 28
The inside of the cylinder 29 is filled with water and a part of the water flows from the cylindrical body 29 into the gap 31
It closes when it is about to flow. Then, due to the siphon effect under the configuration of the tubular body 29 and the cover body 30, water flows into the gap 31 together with the finishing agent as shown by the arrow. Then, the water containing the finishing agent is discharged from the front of the gap 31 to the outside of the water outlet portion 24 and supplied to the washing / dehydrating tank 3. The opening and closing of the second electromagnetic water supply valve 10a is repeated a plurality of times as described below,
Water containing the finishing agent flows out each time, washing and dehydration tank 3
Into the interior, which flushes away the finish in the container 28.

FIG. 4 shows a block circuit of the washing machine. 32
Is a control unit including a microcomputer that controls the washing machine. The control unit 32, based on the key input signal from the key input unit 33, the detection result of the water level sensor 13, and the like, the drive motor 7, the first electromagnetic water supply valve 10,
The second electromagnetic water supply valve 10a and the electromagnetic drainage valve 12 are drive-controlled.

FIG. 5 shows a basic operating procedure of the washing machine.
The control unit 32 first executes the washing process and then the first.
Since the rinse step is a dehydration rinse step and the second rinse step, the rinse step is sequentially executed, and finally the dehydration step is executed.

FIG. 6, FIG. 7, FIG. 8 and FIG.
The flow of the program incorporated in 2 is shown. The operation of the washing machine will be described below with reference to FIG. The key input section 33
When a start key signal arrives based on the operation of the start key in step 3, the controller 32 starts the operation and first executes the washing process. In this washing process, the controller 32
Until the water level sensor 13 detects a predetermined washing water level (until a predetermined amount of water is accumulated in the washing / dehydrating tub 3), the first electromagnetic water supply valve 10 is opened to supply water from the tap (step S1). ). The predetermined washing water level is determined based on the load amount detected by a load amount sensor (not shown) from the four washing water levels L0 to L3 (FIG. 1) including the minimum washing water level L0 before the washing process. Alternatively, the water level key is selectively set from the four washing water levels L0 to L3 before operating the start key.

During the water supply and the washing, the detergent container 2 is used.
Since the detergent is previously put in 0, the washing water is supplied to the washing / dehydrating tub 3 as described above. Then, when the predetermined washing water level is detected, the first electromagnetic water supply valve 10 is closed. Then, when a predetermined amount of water is accumulated, the control unit 32 rotates only the rotary blade 6 at a low speed under the drive of the drive motor 7, thereby washing is performed (S6 step).

Thus, at the water supply stage in step S1 of the washing process, as shown in FIG.
When the minimum detectable water level LR1 that can detect the water level is detected, the water supply required time timer T1 starts measuring, and thereafter, a considerable amount (16 liters) of water accumulates and the water level rises by 8 cm, and the water level sensor 13 reaches the predetermined low water level. When the minimum wash water level L0 higher than LR2 is detected, the water supply required time timer T
The measurement at 1 ends. As a result, the water supply time timer T1 calculates the water supply time until the water level reaches the lowest detectable water level LR1 to the lowest wash water level L0.

Then, the controller 32 controls the water supply time T1.
Based on the above, the first water supply capacity determination is performed. That is, the water supply time T1 is compared with the reference times 64 seconds and 96 seconds. Specifically, the required time T1 is less than 64 seconds, or 64 seconds or more 9
It is checked whether it is less than 6 seconds or 96 seconds or more (S2
Steps). If it is less than 64 seconds, it is determined that the water supply capacity is more than 15 liters / minute, and the wash flow rate rank R1 is 1
Is set (step S3). If it is 64 seconds or more and less than 96 seconds, it is determined that the water supply capacity is 15 liters / minute or less and more than 10 liters / minute, and 2 is set to the washing flow rate rank R1 (S4 step). If it is 96 seconds or more, it is determined that the water supply capacity is 10 liters / minute or less, and the washing flow rate rank R1 is set to 3 (S5 step).

When the washing process is completed, the controller 32 then executes a dehydration rinsing process. In the dewatering and rinsing step, first, the drain valve 12 is opened to drain the washing water at the time of washing, and the washing / dehydrating tub 3 is rotated at high speed together with the rotating blades 6 to dewater the laundry (step S7). When this is finished, dehydration rinsing is executed (S8 step). The drainage valve 12 maintains an open state.

That is, referring to FIG. 10, based on the above-mentioned washing flow rate rank R1 showing the water supply capacity at the time of washing,
In order to control the water supply to the washing / dehydrating tub 3, a time t is determined, and during this time t, the control unit 32 opens the first electromagnetic water supply valve 10 to supply water. The time t determined is
As shown in FIG. 11, the shorter the water supply capacity is (the smaller the washing flow rate rank R1 is), the shorter the water supply capacity is.

Then, during the water supply, the control section 32 repeats driving the drive motor 7 for 1 second and stopping it for 5 seconds. At this time, the washing / dehydrating tub 3 repeats immediately entering the inertial rotation state when trying to rise to the high-speed rotation state together with the rotary blades 6. After all, the washing and dehydrating tub 3 rotates slowly.

Therefore, water is supplied while the washing / dehydrating tub 3 is slowly rotated, and the laundry in the washing / dehydrating tub 3 is almost evenly flooded with water, so that the entire laundry is impregnated with water. When the time t corresponding to the water supply capacity has elapsed, the water is in a state of being soaked.

After that, the first electromagnetic water supply valve 10 is closed, and the controller 32 drives the drive motor 7 for a fixed time (for example, 5 minutes) to rotate the washing / dehydrating tub 3 at a high speed for dehydration.
This causes the detergent to fly off with the water.

Assuming that the above-described series of flow of supplying water while slowly rotating the washing / dehydrating tub 3 and then performing dehydration is one cycle, two cycles are executed in the dehydration rinsing in step S8.

When the dehydration rinsing step is completed, the control section 32 subsequently executes the pool rinsing step. In this step, as in the case of the washing step, the control unit 32 keeps the water level sensor 13 at a predetermined level until the water level sensor 13 detects the rinse water level.
The first electromagnetic water supply valve 10 is opened to supply water from the tap (S9 step). The drain valve 12 is closed in advance just before the dehydration rinsing process. The predetermined rinsing water level is based on the load amount detected by the load amount sensor (not shown) from among the four rinsing water levels L0 to L3 (same as the washing water level) including the lowest rinsing water level L0 before the washing process. It is determined. Alternatively, the water level key is selectively set from the four rinsing water levels L0 to L3 before operating the start key.

When the rinsing water level is detected for a predetermined time, the first
The electromagnetic water supply valve 10 is closed (step S15). S1
In 5 steps, the finishing agent is also put into the washing / dehydrating tank 3. Details of this will be described later. Then, when a predetermined amount of water is accumulated, the control unit 32 rotates only the rotary blades 6 under the drive of the drive motor 7, whereby one rinsing is performed (S16 step).

When the water level sensor 13 detects the lowest detectable water level LR1 as shown in FIG. 9 in the water supply stage of step S9 in the rinsing process, the water supply required time timer T2 is set. After the start of measurement, a small amount (4 liters) of water accumulates, the water level rises by 2 cm, and when the water level sensor 13 detects a predetermined low water level LR2 lower than the rinse water level L0, the water supply required time timer T2 measures finish. As a result, the water supply required time timer T2 determines the water supply time until the water level reaches the predetermined low water level LR2 from the lowest detectable water level LR1.

Then, the controller 32 controls the water supply time T2.
The second water supply capacity determination is performed based on the above. That is, the water supply time T2 is compared with the reference times 16 seconds and 24 seconds. Specifically, the required time T2 is less than 16 seconds, or 16 seconds or more 2
It is checked whether it is less than 4 seconds or 24 seconds or more (S1
0 steps). If it is less than 16 seconds, it is determined that the water supply capacity is more than 15 liters / minute, and the rinse flow rate rank R2
Is set to 1 (step S11). Water supply capacity of 15 liters / minute or less is 10 seconds or more and less than 24 seconds.
Rinsing flow rate R determined to be over liter / minute
2 is set to 2 (step S12). If it is 24 seconds or more, it is determined that the water supply capacity is 10 liters / minute or less, and the rinse flow rate rank R2 is set to 3 (step S13).

After that, the control unit 32 determines the contents of the rinse flow rate rank R2 based on the second water supply capacity determination as the first above.
Of the washing flow rate R1 based on the determination of the water supply capacity (step S14), and depending on the comparison result,
The number of times of rinsing is increased to 2 (from step S17). This will be described later.

When the rinsing process is completed because of the above, the control unit 32 finally executes the dehydration process. In the dehydration process, first, the drain valve 12 is opened to drain the water for the rinsing (S23 step). When the drainage is completed, the control unit 32 rotates the washing / dehydrating tub 3 at a high speed to perform the dehydration (S24 step). The drainage valve 12 maintains an open state. The operation ends when the dehydration process ends.

Although water is supplied from the tap at the time of dewatering and rinsing, the bath water is supplied into the washing and dewatering tub 3 by using a bucket or a bath water supply pump when washing so as to effectively use the bath water. In this case, the water faucet is manually closed in advance before operating the start key on the key input unit 33.

When the operation is started by operating the start key, water is not supplied from the tap even though the first electromagnetic water supply valve 10 is opened in step S1. However, at this time, using a bucket or bath water supply pump, the washing and dewatering tank 3
The bath water is quickly supplied separately. As a result, the water level rises and the predetermined washing water level is detected. The bath water supply is stopped by observing the movement of the rotary blades 6 during the washing in step S6 accompanying the detection of the predetermined washing water level. At the same time, manually open the tap.

When both the water supply from the water faucet and the bath water supply are performed, it is not necessary to close the water faucet, and in this case, the water level rises faster.

However, the water supply capacity using the bucket or the bath water water supply pump is different from the water supply capacity from the water faucet which is used for dehydration rinsing and rinsing.
Therefore, even if the time t in the dehydration rinsing is determined based on the water supply capacity at the time of washing as described above, the dehydration rinsing cannot be satisfactorily performed.

That is, when water is quickly supplied for washing, the water supply capacity is judged to be large, and the wash flow rate rank R
For example, 1 is set to 1. Even if the time t is determined to be short based on the content of the wash flow rate rank R1, the ability of supplying water from the water faucet in actual dehydration rinsing is low, and the time t is too short.

When the bath water is effectively used in this way,
Although the dehydration rinsing cannot be performed satisfactorily, this is covered by the rinsing because of the following, and the rinsing as a whole is satisfactory.

This point will be described in detail below. If the water supply capacity is judged to be large in effective use of bath water, S14
In the step, it is judged that the content of the rinse flow rate rank R2 is larger than the content of the wash flow rate rank R1. That is, it is determined that the water supply capacity determined at the time of rinsing is inferior to the water supply capacity determined at the time of washing. In other words,
It is judged that the dehydration rinsing is insufficient. Then, based on this determination, step S17 and subsequent steps are executed, and the number of times of rinsing is increased to two.

Specifically, first, the water supply started in step S9 is closed for a predetermined time, and the first electromagnetic water supply valve 10 is closed and stopped based on the detection of the rinse water level (step S17). Then, only the rotary blades 6 are rotated under the drive of the drive motor 7, and rinsing is performed for the first time (S18 step). Then, the drain valve 12 is opened for draining (S19 step),
The washing / dehydrating tub 3 is rotated at high speed for dehydration (S20 step). After that, the first electromagnetic water supply valve 10 is opened again to supply water until the rinsing water level is detected for a predetermined time, the water supply valve 10 is closed, and the finish agent is added as described later (step S21). Then, the rotary blade 6 is rotated under the drive of the drive motor 7 and the rinse is performed for the second time (final) (S22 step).

Therefore, in the case where the dehydration rinsing is insufficient, the rinsing is performed twice so as to cover the rinsing, so that the rinsing as a whole is satisfactory. Then, in the rinsing rinse, the finishing agent is added at the final rinsing even if the number of rinsing increases, and the finishing agent effect is sufficiently exhibited.

FIG. 12 shows the timing of adding the finishing agent in steps S15 and S21. From the time when the measurement of the water supply required time timer T2 is completed (the time when the predetermined low water level LR2 is detected) to the time when the first electromagnetic water supply valve 10 is closed by the detection of the predetermined rinsing water level, specifically, the lowest rinsing water level L0 is detected. Until then, the second electromagnetic water supply valve 10a repeats opening for 10 seconds and closing for 5 seconds 5 times in between. That is, the second electromagnetic water supply that has been opened for 10 seconds when the finishing agent container 28 containing the finishing agent is filled with tap water and a part of the water is about to flow out from the tubular body 29 into the gap 31. The situation in which the valve 10a is closed and the filled water flows to the washing and dehydrating tub 3 together with the finishing agent by the siphon effect during the subsequent closing is repeated five times. As a result, the finishing agent is neatly put into the washing / dehydrating tank 3.

The above operation is summarized as follows. After washing, first rinsing (dewatering rinsing) and second rinsing (trimming rinsing) are sequentially executed, and water supply control at the time of dehydration rinsing is performed based on the water supply capacity at the time of washing.

At this time, while the bath water is supplied to the washing / dehydrating tank 3 for the purpose of effectively utilizing the bath water, while the water is supplied from the tap at the time of the dehydration rinsing, the water supply capacity at the time of the washing and the dehydration rinsing. However, even if the water supply control at the time of dewatering and rinsing is performed based on the water supply capacity at the time of washing, dewatering and rinsing cannot be performed satisfactorily. However, the water supply capacity is determined at the time of rinsing, the water supply capacity is compared with the water supply capacity at the time of washing, and when the result that the dehydration rinsing is insufficient is obtained based on the comparison result, the number of times of rinsing rinsing is obtained. Will increase to twice. Therefore, the dewatering rinse shortage is covered, and the rinse as a whole becomes satisfactory.

In the rinsing rinse, even if the number of rinsing rinses increases, the finishing agent is added at the final rinsing, so that the finishing agent effect is sufficiently exhibited.

In this case, since the water level in the washing / dehydrating tank 3 is the lowest at the time of the final rinsing, the finishing agent is poured while flowing with water until the rinsing water level L0 is reached. Therefore, even if the predetermined rinse water level for performing rinsing is the lowest and therefore the rinse water level is L0, the water level in the washing / dehydrating tank 3 does not exceed the predetermined rinse water level at the end of the addition of the finishing agent, and the water is Useless use is suppressed, and undesired thinning of the finish is suppressed.

On the other hand, when the water is supplied from the tap at the time of washing and the water supply capacity in the washing and dehydration rinsing is the same, and the water supply control of the dehydration rinsing is performed based on the water supply capacity at the time of washing, the dehydration rinsing can be satisfactorily performed. As a result of comparison between the water supply capacity at the time of rinsing and the water supply capacity at the time of washing, the result that the dehydration rinsing is not insufficient is obtained, and the rinsing is performed only once.

Then, in this rinsing for only one time, the predetermined low water level L already supplied for the water supply capacity determination.
Since the water level in the washing / dehydrating tank 3 is the lowest from R2, the finishing agent is poured while flowing with water until it reaches the rinse water level L0. Therefore, also in this case, for example, the predetermined rinse water level for performing trial rinse is the lowest because the rinse water level is the lowest.
However, since the water level in the washing / dehydrating tub 3 does not exceed the rinse water level at the end of the addition of the finishing agent, the wasteful use of water is suppressed, and the finishing agent undesirably thins. Suppressed.

Further, the water supply capacity in the rinsing rinse is determined so that the water level in the washing / dehydrating tank 3 is the lowest at the time of the subsequent addition of the finishing agent (when the rinsing is performed only once) so that it does not exceed the rinsing water level L0. In addition, the minimum rinse water level L
It is performed based on the water supply time until the water level in the washing / dehydrating tank 3 reaches the predetermined low water level LR2 lower than 0.

However, the determination of the water supply capacity in washing is performed based on the water supply time until reaching the minimum washing water level L0 which is higher than the predetermined low water level LR2, because the finishing agent is not injected at the time of washing. That is, in washing, since the water supply capacity determination is performed based on the water supply time for a large water level change, the accuracy of the water supply capacity determination is good.

In the step S21 of the above embodiment, since the water is supplied for rinsing for the second time (final), the second electromagnetic water supply valve 10a is arranged so that the finishing agent is added at the same time when the water supply is started. May be drive-controlled.

[0068]

According to the present invention, after washing, the first rinsing (dehydration rinsing) and the second rinsing (temporary rinsing) are sequentially executed, and the water supply control at the first rinsing is performed based on the water supply capacity at the time of washing. In the washing machine that performs the above, when the result that the first rinsing is insufficient is obtained by supplying the bath water in order to effectively use the bath water, etc., the number of times of rinsing is increased. Therefore, the first shortage of rinsing can be covered, and the rinsing as a whole can be performed satisfactorily. Further, in the rinsing rinse, even if the number of rinsing rinses increases, the finishing agent is added at the final rinsing rinse, and the finishing agent effect can be sufficiently exhibited.

Furthermore, since the water level in the washing / dehydrating tub is the lowest, the finishing agent can be added before the rinsing water level is reached, and therefore the predetermined rinsing water level for performing rinsing is the lowest rinsing water level. Since the water level in the washing / dehydrating tank does not exceed the rinsing water level at the end of the addition of the finishing agent, it is possible to prevent wasteful use of water and to prevent the finishing agent from undesirably thinning.

Further, the water supply capacity at the time of washing is determined based on the water supply time for a large water level change in view of the fact that the finishing agent is not supplied at the time of washing. It can be accurately determined.

[Brief description of drawings]

FIG. 1 is a sectional view of a fully automatic washing machine according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view near a water outlet of a first water supply pipe of the washing machine.

FIG. 3 is a cross-sectional view near a water outlet of a second water supply pipe of the washing machine.

FIG. 4 is a block circuit diagram of the washing machine.

FIG. 5 is a sequence diagram showing a basic operating procedure of the washing machine.

FIG. 6 is a flow chart of a program relating to a washing process and a dehydration rinsing process, which is incorporated in a control unit of the washing machine.

FIG. 7 is a flow chart of a program relating to a rinsing rinsing process and a dehydrating process incorporated in the control unit of the washing machine.

FIG. 8 is a flow chart of a main program during a washing process, which is incorporated in a control unit of the washing machine.

FIG. 9 is a flow chart of a main part program during a rinsing process incorporated in the control unit of the washing machine.

FIG. 10 is a timing diagram showing a drive timing of a main part when the washing machine is dehydrated and rinsed.

FIG. 11 is a diagram showing a relationship between a water supply time and a water supply capacity when the washing machine is dehydrated and rinsed.

FIG. 12 is a timing chart showing drive timing of main parts when the finishing agent is put into the washing machine.

[Explanation of symbols]

 3 Washing / Dehydrating Tank 7 Drive Motor 10 First Electromagnetic Water Supply Valve 10a Second Electromagnetic Water Supply Valve 12 Electromagnetic Drain Valve 13 Water Level Sensor 20 Detergent Container 28 Finishing Agent Container 32 Control Section

Claims (4)

[Claims] 1. A washing process in which water is supplied to a washing / dehydrating tank to a predetermined washing water level to perform washing, a first water supply capability determining process for determining a water supply capability in this washing process, and a washing process after the washing process. A first rinsing step of performing rinsing under the water supply control for the washing / dehydrating tank based on the water supply capacity determination result in the first water supply capacity determining step, and the washing / dehydrating tank after the first rinsing step. The second rinsing step of supplying water to the predetermined rinsing water level to perform the rinsing and the water supply capacity in the second rinsing step are set to a predetermined low water level lower than the rinsing water level because the water level in the washing / dehydrating tank is the lowest. Second to judge based on the water supply time to reach
A water supply capacity determination step is provided, and the respective water supply capacity determination results in the first and second water supply capacity determination steps are compared, and based on this comparison, the result that the rinse in the first rinse step is not insufficient was obtained. At this time, the number of times of rinsing in the second rinsing step is set to 1, and after that, before the water level in the washing / dehydrating tank reaches the minimum rinsing water level, the finishing agent previously stored in the finishing agent storage container is removed. The water is poured into the washing / dehydrating tub while flowing it with water, and when the result of insufficient rinsing in the first rinsing step is obtained based on the comparison, the number of times of rinsing in the second rinsing step is increased. Control as
During the final rinsing in the second rinsing step, the finishing agent pre-stored in the finishing agent storage container is stored in the washing / dehydrating tub until the water level in the washing / dehydrating tub reaches the rinsing water level due to the lowest value. A method for adding a finishing agent to a washing machine, which is characterized in that the agent is added while flowing with water. 2. In the first rinsing step, water supply control for the washing and dehydrating tub based on the water supply capacity determination result in the first water supply capacity determining step, and high speed rotation control of the washing and dehydrating tub are performed, Perform a dehydration rinse,
The method for adding a finishing agent to a washing machine according to claim 1, wherein 3. In the second water supply capacity determining step, the water supply capacity in the second rinsing step is changed from the lowest detectable water level at which the water level in the washing / dehydrating tank can be detected to the predetermined low water level. The method of adding a finishing agent to a washing machine according to claim 1 or 2, wherein the determination is performed based on time. 4. The water supply capacity in the washing step in the first water supply capacity determination step until the water level in the washing / dehydrating tank reaches the minimum wash water level higher than the predetermined low water level from the minimum detectable water level. Judge based on time,
The method of adding a finishing agent to a washing machine according to claim 3, wherein