JP2012040090A - Washing and dehydration machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing and dehydration machine that stops dehydration when an abnormal occurrence of bubbles is detected during dehydration and shortens the time required for finishing all the operations even though dehydration is once again conducted later.SOLUTION: A washing and dehydration machine comprises a water tub housing a drum (rotary tub) inside, allowing laundry to be cleaned in the drum and dehydrated by drum rotation, and is equipped with a function of detecting an abnormal occurrence of bubbles in the water tub during dehydration. When an abnormal occurrence of bubbles is detected, the washing and dehydration machine stops dehydration and once again conducts dehydration later. In the repeated dehydration, the drum is started up so that its rotation speed is faster than that before the stoppage.

Description

  Embodiments described herein relate generally to a dehydrating washing machine.

  Conventionally, in a dehydrating and washing machine, a rotating tub is provided inside the water tub, the laundry is washed inside the rotating tub, and the laundry is dehydrated by rotation of the rotating tub. What has the function to detect the abnormal generation | occurrence | production of the bubble in the inside of the said water tank at the time of the dehydration is provided.

  Abnormal occurrence of foam during dehydration indicates that water containing detergent discharged from the laundry is agitated by the rotation of the rotating tank and becomes creamy, thereby impeding the rotation of the rotating tank and dehydrating Can not be enough. Therefore, the dehydration is stopped, and then the foam is discharged by alternately repeating the drainage from the aquarium, the water supply to the aquarium, and the drainage from the aquarium, and then the dehydration is performed again. The operation is temporarily suspended and the dehydration is performed again without performing the foam discharge process. In any case, when the occurrence of an abnormal bubble is detected, the dehydration is stopped, and then the dehydration is performed. Is performed again (for example, refer to Patent Document 1).

JP 2008-279120 A

  However, the operation content of the conventional dehydration operation after the dehydration is stopped at the time of detecting the occurrence of bubbles is the same as the operation content of the dehydration before the operation is canceled, and as a result, the time until the end of the entire operation Has the problem that it takes a long time.

  Therefore, a dehydrating combined washing machine is provided that can reduce the time until the end of the entire operation although the dehydration is stopped when the occurrence of an abnormal bubble is detected during the dehydration, and then the dehydration is performed again.

  The dehydrating combined washing machine of the present embodiment has a rotating tub inside the water tub, the laundry is washed inside the rotating tub, and the laundry is dehydrated by rotation of the rotating tub. Sometimes it has a function to detect the abnormal occurrence of bubbles inside the water tank, and when the abnormal occurrence of bubbles is detected, the dehydration is stopped, and then the dehydration is performed again. In some cases, the rotational speed of the rotating tank is raised faster than the rotational speed of the rotating tank for dehydration before cancellation.

The figure showing the change of the rotation speed of the drum at the time of bubble abnormality generation | occurrence | production detection and the change of the water level detection result of a water level sensor which show 1st Embodiment Longitudinal side view of the entire washing machine Electrical configuration block diagram Flow chart showing a series of operations during operation FIG. 4 equivalent view showing the second embodiment Diagram showing drum rotation mode 1 during dehydration Diagram showing drum rotation mode 2 during dehydration FIG. 4 equivalent view showing the third embodiment FIG. 4 equivalent view showing the fourth embodiment

Hereinafter, a first embodiment applied to a drum type washing and drying machine will be described with reference to FIGS. 1 to 4.
First, FIG. 2 shows the overall configuration of the drum-type washing and drying machine, and a water tank 2 is arranged inside the outer box 1. The water tank 2 has a horizontal cylindrical shape whose axial direction is front and rear (left and right in FIG. 2), and is elastically supported on the bottom surface of the outer box 1 by a plurality of suspensions 3 (only one is shown). The support form is an upwardly inclined shape.

An opening 4 is formed at the front end (left side in FIG. 2) of the water tank 2, and this opening 4 is formed in the opening 5 for putting in and out the laundry (clothing) formed on the front surface of the outer box 1. It is connected with an annular bellows 6, and a door 7 is provided in the opening 5 of the outer box 1 so as to be opened and closed.
On the other hand, a motor 8 is attached to the back surface of the rear end plate portion of the water tank 2. The motor 8 is of an outer rotor type, and is a brushless DC motor, and has a rotation shaft 8b at the center of the rotor 8a. The rotation shaft 8b is the center of the end plate on the rear side of the water tank 2. Is inserted into the water tank 2 so as to be rotatable.

  A drum 9 is disposed inside the water tank 2. The drum 9 also has a horizontal cylindrical shape in the front and rear direction, and the drum 9 is also coaxial with the water tank 2 by attaching the central portion of the rear end surface to the rotating shaft 8b of the motor 8. It is provided in an upwardly inclined state. As a result, the drum 9 is rotated about the rotation shaft 8b by the motor 8, so that the drum 9 is a rotating tub and the motor 8 functions as a driving device for rotating the drum 9. It has become.

  An opening 10 is formed in an end surface portion on the front side of the drum 9, and the opening 4 of the water tank 2 surrounds the opening 10. Further, for example, a liquid-sealed rotary balancer 11 is provided around the opening 10 of the drum 9, and a hole 12 is formed on the circumferential side portion (body portion) almost entirely ( Only a part is shown). The hole 12 functions as a water passage hole during washing and dehydration, and functions as a ventilation hole during drying. In addition, a plurality of baffles 13 for stirring the laundry are provided on the inner surface of the peripheral side portion of the drum 9.

Further, a hot air outlet 14 is formed in the upper part of the front end surface of the water tank 2 (a part above the opening 4), and a hot air inlet 15 is formed in the upper part of the rear end plate part. The rear end plate portion of the drum 9 is formed with a large number of vent holes 16 corresponding to the hot air inlet 15 in an annular arrangement centering on the rotating shaft 8 b of the motor 8.
A drain port 17 is formed at the rearmost part of the water tank 2, a drain pipe 18 is connected to the drain port 17 outside the water tank 2, and a drain valve 19 is provided in the drain pipe 18. The drain valve 19 discharges the water in the water tank 2 from the drain pipe 18 through the drain hose 20.

  Further, a base plate 21 is disposed below the water tank 2 (on the bottom surface of the outer box 1), and a ventilation duct 22 is disposed on the base plate 21. This ventilation duct 22 has an air inlet 23 at the upper part of the front end, and the air outlet 23 is connected to a warm air outlet 14 of the water tank 2 with a return air duct 24 and a flexible duct joint 25. Connected through. The return air duct 24 is piped so as to bypass the left side of the opening 4 of the water tank 2.

On the other hand, a casing 27 of a circulation fan 26 is connected to the rear end portion of the ventilation duct 22, and an outlet portion 28 of the casing 27 is connected via a flexible duct joint 29 and an air supply duct 30. The hot water inlet 15 of the water tank 2 is connected. The air supply duct 30 is piped so as to bypass the left side of the motor 8.
Thus, the hot air outlet 14 and the hot air inlet of the water tank 2 outside the drum 9 by the return air duct 24, the duct joint 25, the ventilation duct 22, the casing 27 of the circulation fan 26, the duct joint 29, and the air supply duct 30. The ventilation path 31 which connects 15 is comprised.

  The circulation fan 26 has an impeller 32 inside a casing 27, and the impeller 32 is rotated by a motor 33 disposed outside the casing 27. The air in the drum 9 is circulated back to the drum 9 from the air vent 16 of the drum 9 after being discharged out of the drum 9 through the air passage 31 and thus circulated with the air passage 31. An air circulation device 34 that circulates the air in the drum 9 is constituted by the blower 26 for use.

  Thus, the evaporator 35 is disposed in the front portion (upstream side of the circulating air flow) inside the ventilation duct 22 in the ventilation path 31 and the condenser 36 is disposed in the rear portion (downstream side of the circulating air flow). Is arranged. These evaporator 35 and condenser 36 constitute a heat pump 38 together with a compressor 37 and a throttle (not shown, but in particular, an electronic throttle valve (PMV: Pulse Motor Valve) whose opening degree can be adjusted). In this heat pump 38, the compressor 37, the condenser 36, the constrictor, the evaporator 35, and the compressor 37 are cycle-connected in this order (refrigeration cycle) and are not shown when the compressor 37 operates. A refrigerant (for example, R134a) is circulated. The compressor 37 and the restrictor are arranged outside the ventilation duct 22 (only the compressor 37 is shown in FIG. 2).

Further, an air discharge path 39 is provided from the front end of the ventilation duct 22 where the air suction port 23 is located to the front outside the machine. The air discharge path 39 communicates with the air suction port 23 of the ventilation duct 22, and a switching damper 40 is provided at the communication portion.
The switching damper 40 is rotated by the power of a driving source such as a motor or an electromagnet (not shown), and as shown by a solid line and a two-dot chain line in the drawing, the air discharge path 39 and the ventilation duct 22 (ventilation path 31). The air circulation device 34 functions as an air path switching device that communicates and blocks the air passage 31 in the air circulation device 34.

Further, a discharge blower 41 is provided inside the air discharge passage 39, and the outlet portion of the air discharge passage 39 in front of the air discharge passage 39 is opened and closed by the power of a drive source such as a motor or an electromagnet (not shown). A shutter 42 is provided.
Further, an outside air inlet 43 is formed on the upper surface portion of the intermediate portion of the ventilation duct 22 between the portion where the evaporator 35 of the ventilation duct 22 is disposed and the portion where the condenser 36 is disposed. Yes.

  Further, a display system control device 44, a water supply box 45, and a power supply system control device 46 are disposed in the upper part of the outer box 1, and in particular, the water supply box 45 includes a detergent charging unit, The tap water is supplied into the water tank 2 through the detergent inlet during the washing process by selecting the opening of the outlets having a plurality of water supply valves (not shown in FIG. 2). In the final stage of the rinsing process, water is also supplied into the water tank 2 through the soft finishing agent charging part.

  In addition, a water level sensor 47 is disposed in the upper portion of the outer box 1, and an air trap 48 provided in the rear lower portion of the water tank 2 is connected to the water level sensor 47 through an air tube 49. Thus, the water level sensor 47 responds to the change in the stored water level in the water tank 2 by the change in the air pressure, that is, detects the stored water level in the water tank 2 and outputs a water level detection signal corresponding thereto.

  FIG. 3 is a block diagram showing an electrical configuration centering on the control device 46. The control device 46 is composed of, for example, a microcomputer, and functions as a control means for controlling the overall operation of the drum type washing and drying machine. The control device 46 includes various types of operation panels (not shown). Various operation signals are input from an operation input unit 50 including operation switches.

In addition, the control device 46 receives a water level detection signal from the water level sensor 47, and also receives a rotation detection signal from a rotation sensor 51 provided to detect the rotation of the motor 8, and further flows to the motor 8. A current detection signal is input from a current sensor 52 provided to detect current.
The control device 46 calculates the number of revolutions of the motor 8 and hence the number of revolutions of the drum 9 by the time required for detection based on the rotation detection signal from the rotation sensor 51, thereby It also functions as a rotational speed detecting means for detecting the rotational speed.

  Further, the control device 46 calculates a q-axis current among the currents detected by the current sensor 52. In the present embodiment, the motor 8 for rotating the drum 9 is a brushless DC motor, and this brushless DC motor is composed of a rotor having a permanent magnet and a stator having a coil. The current flowing in the motor 8 is obtained by performing general vector control so that the d-axis current in the direction parallel to the magnetic flux generated by the S and N poles of the stator coil (rotational direction) and the q-axis current in the perpendicular direction. By detecting the q-axis current value depending on the load applied to the motor 8 among them, it is possible to detect the abnormal occurrence of bubbles in the water tank 2 during dehydration.

  More specifically, the dehydration of the laundry is performed by shaking and discharging moisture from the laundry by centrifugal force generated by rotating the drum 9 where the laundry after washing remains. Contains detergent. When the drum 9 stirs the discharged water containing the detergent component with its rotation, cream-like foam is generated, and if the amount of generation is abnormally large, the rotation of the drum 9 is inhibited. The load on the motor 8 increases. Then, since the q-axis current value becomes large, by detecting the q-axis current value, it is possible to detect the occurrence of bubbles in the water tank 2 during dehydration. Thus, the drum-type washing and drying machine (dehydrating and washing machine) having the above-described configuration has a function of detecting the occurrence of bubbles in the water tank 2 during dehydration.

  And the control apparatus 46 is based on those inputs and the control program memorize | stored previously, The water supply valve 53 provided so that it might supply in the said water tank 2 through the said water supply box 45, the said motor 8, and the said waste_water | drain The valve 19, the circulation fan 26, the compressor 37, the drive source (motor or electromagnet) 54 of the switching damper 40, the discharge fan 41, and the drive source (motor or electromagnet) 55 of the shutter 42 are driven. A drive control signal is given to the drive circuit 56.

Next, the operation of the drum type washing / drying machine having the above-described configuration will be described.
FIG. 4 shows a standard operation course of the drum-type washing and drying machine having the above-described configuration. When this standard driving course is selected and started (started) by the operation input unit 50, the “washing” process is first started (step S1). In this “washing” process, the operation of supplying water into the water tank 2 from the water supply valve 53 through the detergent input part of the water supply box 45 is performed, whereby the detergent previously placed in the detergent input part of the water supply box 45 is also added to the water tank. 2 is inserted. Subsequently, when the motor 8 is operated, the drum 9 is rotated alternately in both forward and reverse directions at a low speed, whereby the laundry previously stored in the drum 9 is agitated and washed with water containing detergent. Is called.

  When the “washing” process is completed, the “first dehydration” process is then started (step S2). In this “first dehydration” step, the drain valve 19 is opened to discharge the water in the water tank 2 and then the drum 9 is rotated in one direction at a high speed. The laundry after washing is centrifugally dehydrated.

  Here, during the “first dehydration” process, it is determined whether or not the occurrence of bubble abnormality has been detected based on the detection result of the current sensor 52 (step S3). If it is determined in this step S3 that the occurrence of bubble abnormality has not been detected (NO), the “first dehydration” process is properly completed, and then the process proceeds to the “dehydration rinse” process (step S4). The “dehydration rinsing” process is performed by rotating the drum 9 and pouring water into the drum 9. Specifically, for example, after the drum 9 is rotated for a predetermined time to dehydrate the laundry, Then, after the drum 9 is further rotated for a predetermined time to dehydrate the laundry, the operation of pouring water into the drum 9 is repeated.

  Thereafter, “water supply” for performing the next “reservoir rinse” process is performed in the same manner as the water supply in the “washing” process (step S5), and then the process proceeds to the “reservoir rinse” process (step S6). . This “reservoir rinse” step is performed by alternately rotating the drum 9 in both forward and reverse directions at a low speed in a state where water is accumulated from the water tank 2 into the drum 9 by the above “water supply”. .

  Next, the process proceeds to the “final dehydration” process (step S7). In this “final dehydration” process, the drain valve 19 is opened to drain water in the water tank 2 and then the drum 9 is rotated in one direction in a rotational mode in which the rotational speed is gradually increased as shown in FIG. This is performed by rotating, whereby the rinsed laundry in the drum 9 is centrifugally dehydrated.

  When the “final dehydration” process ends, the process proceeds to the “drying” process (step S8). In this “drying” stroke, the switching damper 40 is set so that the air discharge path 39 is blocked from the air flow path 31 and the air flow path 31 is communicated with the air circulation device 34 as shown by a solid line in FIG. In this state, the motor 33 of the circulation fan 26 is operated while rotating the drum 9 in both forward and reverse directions at a low speed. Then, as shown by the solid line arrow in FIG. 2, the air in the water tank 2 flows into the ventilation duct 22 from the hot air outlet 14 through the return air duct 24 and the duct joint 25 by the air blowing action of the impeller 32. Inflow.

  At this time, the operation of the compressor 37 of the heat pump 38 is started. As a result, the refrigerant sealed in the heat pump 38 is compressed by the compressor 37 to become a high-temperature and high-pressure refrigerant, and the high-temperature and high-pressure refrigerant flows into the condenser 36 and exchanges heat with the air in the ventilation duct 22. As a result, the air in the ventilation duct 22 is heated, and conversely, the temperature of the refrigerant is lowered and liquefied. The liquefied refrigerant is then depressurized through the restrictor and then flows into the evaporator 35 to be vaporized. Thereby, the evaporator 35 cools the air in the ventilation duct 22. The refrigerant that has passed through the evaporator 35 returns to the compressor 37.

  As a result, the air flowing into the ventilation duct 22 from the water tank 2 is cooled by the evaporator 35 and dehumidified. Further, downstream of the air, the air is heated by the condenser 36 and is warmed. Then, the hot air is supplied into the water tank 2 from the hot air inlet 15 through the duct joint 29 and the air supply duct 30, and is further supplied into the drum 9 from the vent 16.

The hot air supplied into the drum 9 deprives the laundry of moisture, and then flows into the ventilation duct 22 from the hot air outlet 14 through the return air duct 24 and the duct joint 25. Thus, air circulates between the air duct 22 having the evaporator 35 and the condenser 36 and the drum 9 so that the laundry in the drum 9 is dried. Accordingly, the drum 9 functions as a drying chamber at this time.
After this “drying” process is completed, the entire operation is terminated.

  In contrast, if it is determined in step S3 that a bubble abnormality has been detected (YES), the "first dehydration" process is stopped at that point, and the drain valve 19 is opened thereafter. On the other hand, by opening the water supply valve 53, the drainage from the water tank 2 and the water supply to the water tank 2 are performed in parallel (step S9). Thereafter, the water supply valve 53 is closed and only the drain valve 19 is closed. By making it open, only the drainage from the water tank 2 is performed (step S10).

  Next, it is determined whether or not the drainage from the water tank 2 and the water supply to the water tank 2 in step S9 have been performed, for example, ten times (step S11), and it is determined that they have not been performed (NO). In the meantime, the process returns to step S9. If it is determined that the process has been performed (YES), the "first dehydration" process is performed again (step S12).

  Here, FIG. 1 shows changes in the rotational speed of the drum 9 in the series of operations from the steps S2 to S3, S9, S10, S11, S12 (when the occurrence of bubble abnormality is detected), and the water level sensor 47. It shows how the water level detection result (detection signal frequency) changes. As is apparent from FIG. 1, in the first “first dehydration” process, the rotational speed of the drum 9 is increased to a predetermined value, for example, about 170 [rpm], and the state is maintained for a predetermined value, for example, 1.5 [minutes]. Is done. Thereby, the drainage (dehydration) rate of the water containing the detergent from the laundry is suppressed to a predetermined value, and thus dehydration (so-called “foaming dehydration”) is performed while avoiding the occurrence of abnormal bubbles. During this period, the water level detection result of the water level sensor is increased, although it is not abnormal, it seems to be caused by an increase in pressure due to the generated bubbles.

  Next, in the first “first dehydration” step, the rotational speed of the drum 9 is increased with a predetermined high speed of, for example, 1300 [rpm]. As a result, a large amount of the remaining water containing the detergent from the laundry is discharged, and at this time, an abnormal bubble is generated. The occurrence of the bubble abnormality is determined based on the detection result of the current sensor 52 as described above. When the q-axis current reaches the threshold value C, it is determined that the bubble abnormality has occurred. Then, the rotation of the drum 9 is stopped, and instead, only the drainage from the aquarium 2 and the water supply to the aquarium 2 and the drainage from the aquarium 2 are alternately performed. A discharge process is performed.

After that, the “first dehydration” step is performed again. This “first dehydration” process is performed again by performing the first “first dehydration” process until immediately after “foaming dehydration” and performing the dehydration as much as it is. The rotational speed of the drum 9 is increased for a predetermined high speed of, for example, 1300 [rpm], and the rotational speed of the drum 9 is set to the first “first”, which is the dehydration before the cancellation, as much as the “bubble dehydration” is not performed. The drum 9 is started up faster than the rotational speed of the drum 9 in the “one dehydration” stroke.
Note that the change in the rotation speed of the drum 9 after the “bubble dehydration” in the first “first dehydration” process is the same as the change in the rotation speed of the drum 9 in the “first dehydration” process.

In addition, when the occurrence of the bubble abnormality is detected, the dehydration is stopped, and after that, only the drainage from the aquarium 2 and the water supply to the aquarium 2 and the drainage from the aquarium 2 are repeated alternately. The operation may be temporarily suspended and dehydration may be performed again without performing the foam discharge process.
Then, after the “first dehydration” step (step S12) to be performed again is completed, the process proceeds to step S4.

As described above, the washing / drying machine having the above configuration has the drum 9 as a rotating tub inside the water tub 2, and the laundry is washed inside the drum 9 (rotating tub). The dehydration is performed and has a function of detecting the occurrence of bubbles in the water tank 2 at the time of the dehydration. When the occurrence of bubbles is detected, the dehydration is stopped and then the dehydration is performed again. In the apparatus, when the dehydration is performed again, the rotation speed of the drum 9 is raised faster than the rotation speed of the dehydration drum 9 before the suspension.
Thereby, the time until the end of all operations can be shortened.

  In contrast, FIGS. 5 to 9 show the second to fourth embodiments, and the same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Only the part is described.

[Second Embodiment]
In the second embodiment shown in FIG. 5 to FIG. 7, after the above-described step S4 (before step S5), the process proceeds to the “second dehydration” step (step S101). The “dehydration” step is performed in the same manner as the above-described “final dehydration” step, that is, by rotating in one direction in a rotation mode in which the rotational speed is gradually increased, for example, as shown in FIG.

  On the other hand, after step S12, “dehydration rinsing” similar to step S4 is performed (step S102), and thereafter, a “second dehydration” step is performed (step S103). This “second dehydration” step is different from the “second dehydration” step in step S101 in the content of starting up the rotational speed of the drum 9. Specifically, as shown in FIG. 7, the low-speed rotation time in the initial stage is set longer, so that the rotation speed is increased slower than the rotation speed of the drum 9 in the “second dehydration” process of step S101.

  Thereafter, the process proceeds to “water supply” similar to step S5 (step S104), and then proceeds to the “reservoir rinse” process similar to step S6 (step S105). Thereafter, the process proceeds to the “final dehydration” process. Transition is made (step S106). This “final dehydration” process is different from the “final dehydration” process in step S7 in the details of the rise of the rotational speed of the drum 9. Specifically, as shown in FIG. By increasing the rotation time, the rotation speed is set to be slower than the rotation speed of the drum 9 in the “final dehydration” process in step S8.

  That is, in this case, the rotation speed of the drum 9 at the time of dehydration (steps S103 and S106) after the dehydration is again performed (step S12) when the occurrence of the abnormality of the foam is detected at the time of dehydration is determined. When the occurrence is not detected, the rotation speed is increased slower than the rotational speed of the drum 9 during dehydration (steps S101 and S7).

By doing this, the same effect as “bubble dewatering dehydration” in the “first dehydration” process described above is obtained, and the occurrence of abnormal bubbles is avoided. At this point, the occurrence of abnormal bubbles is detected. Thus, it is possible to prevent the occurrence of a situation where dehydration is stopped and then dehydration is performed again, and as a result, it is possible to contribute to shortening the time until the end of all operations.
As is clear from the above description, the detection of the abnormal bubble occurrence is performed not only in the “first dehydration” process, but also in each subsequent dehydration process. As described above, dehydration is stopped, and then dehydration is performed again.

Further, in this case, the rotation speed of the drum 9 at the time of dehydration after the dehydration is performed again is set to be slower than the rotation speed of the drum 9 at the time of dehydration when the occurrence of abnormal bubbles is not detected. Minutes, the dehydration time is extended as shown by T in FIG. 7 so that sufficient dehydration can be performed.
After the “final dehydration” step in step S106 is completed, the process proceeds to step S8.

[Third Embodiment]
In the third embodiment shown in FIG. 8, the “dehydration rinsing” process is performed in step S4 when it is determined in step S3 that no bubble abnormality has been detected (NO). After step S12 when it is determined that a bubble abnormality has been detected in S3 (YES), “water supply” is performed in the same manner as in step S5 (step 201). "Is performed (step 202).

  That is, in this case, “rinse dehydration” is performed when the occurrence of bubble abnormality is detected during dehydration, and the rinsing after dehydration is performed again when the occurrence of bubble abnormality is not detected (step S4). Therefore, it is changed to “reservoir rinse” (step S202).

By doing so, the “reservoir rinse” uses more water than the “dehydrated rinse”, so that it is possible to effectively dilute the detergent remaining in the laundry, and the occurrence of abnormal bubbles in the subsequent dehydration is avoided. The Also, in this case, since “dehydration” does not perform dehydration, the occurrence of abnormal bubbles during the rinsing is avoided, and in all cases, dehydration is stopped and then dehydration is performed again. As a result, it can contribute to shortening the time until the end of the entire operation.
Note that after step 202, the process proceeds to step S5.
Further, the third embodiment may be implemented together with the second embodiment.

[Fourth Embodiment]
In the fourth embodiment shown in FIG. 9, the “dehydration rinsing” process in step S4 and the “reservoir rinsing” in step S6 when it is determined in step S3 that no bubble abnormality has been detected (NO). "The process was performed once each, but after step S12 when it was determined that a bubble abnormality was detected in step S3 (YES)," dehydration rinsing "similar to step S4. The process is performed twice (steps S301 and S302), and then the “water supply” process similar to step S5 and the “reservoir rinse” process similar to step S6 are performed twice (steps S303, 304, 305, and 306). ing.

  That is, in this case, the number of times of rinsing after performing dehydration again when the occurrence of foam abnormality is detected at the time of dehydration is greater than the number of times of rinsing (steps S4 and S6) when no abnormality of foam is detected. (Steps S301, S302, S304, S306), and the number of times may be larger than the number of times described above.

In this way, when the occurrence of abnormal foam is detected during dehydration, it is possible to effectively dilute the detergent remaining in the laundry by rinsing many times, and the abnormal occurrence of foam during subsequent dehydration. Therefore, it is possible to prevent the occurrence of a situation where dehydration is stopped and then dehydration is performed again, and as a result, it is possible to contribute to shortening the time until the end of the entire operation.
In this case, after step S306, the process proceeds to step S7.
Further, this fourth embodiment may be implemented in combination with either or both of the second embodiment and the third embodiment.

The dehydrating combined washing machine described above is not limited to the above-described embodiment. In particular, the entire machine may not have a drying function, and the water tank and the rotating tank may have a vertical axis. The present invention can be implemented with appropriate modifications within a range not departing from the gist.
In addition, although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 2 is a water tank, 9 is a drum (rotary tank), 46 is a control device, and 52 is a current sensor.

Claims (4)

There is a rotating tub inside the aquarium, the laundry is washed inside the rotating tub, and the laundry is dehydrated by the rotation of the rotating tub. In what has a function to detect, and when the abnormal occurrence of the bubble is detected, dehydration is stopped and then dehydration is performed again.
When the dehydration is performed again, the rotation speed of the rotating tub is raised faster than the rotation speed of the rotating tub before dehydration.   The rotation speed of the rotating tank at the time of dehydration after the dehydration was performed again when the abnormal occurrence of foam was detected at the time of dehydration, and the rotation speed of the rotating tank at the time of dehydration when the occurrence of abnormal foam was not detected 2. The dehydrating combined washing machine according to claim 1, wherein the washing machine is started later.   Rinsing after dehydration is again performed when abnormal bubble generation is detected during dehydration, dehydration rinsing is performed by rotating the rotating tank and pouring water into the rotating tank when abnormal bubble generation is not detected The dehydrating combined washing machine according to claim 1 or 2, wherein the washing machine is changed from a water tub to a water rinsing performed by accumulating water in the rotating tub.   The rinsing after the dehydration is performed again when the abnormal occurrence of bubbles is detected during dehydration is performed more frequently than the rinsing when the abnormal occurrence of bubbles is not detected. 4. The dehydrating combined washing machine according to any one of 3 above.

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