JP2008188459A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine capable of surely performing washing and sterilization utilizing electrolysis. <P>SOLUTION: In the electrolytic washing process, when an energizing current value becomes extremely large due to the erroneous feed of a detergent by a user, electrolytic washing performed with a lot of the detergent remaining on laundry and the increase of the detergent concentration of washing water, etc., since an energizing current exceeds an upper limit current value, the operation of an electrolytic device is stopped in the middle of the electrolytic washing. At the time, the operation of a pulsator 7 is continued and washing itself is continued. In the electrolytic washing process, it is needed to fully remove the stains of the laundry differently from the case of a prewashing process. Thus, in the case of stopping the operation of the electrolytic device 31 in the middle of the electrolytic washing process, an additional electrolytic washing process is performed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a washing machine such as a fully automatic washing machine, a drum washing machine, and a two-tank washing machine. The present invention also relates to a washing machine for washing an object to be washed such as a washing machine or a dishwasher.

In a washing machine (washing machine), washing is usually performed using a detergent. For example, in a fully automatic washing machine, water in which detergent is dissolved (laundry liquid) is stored in a washing and dehydrating tub, and a pulsator arranged at the bottom is rotated to generate a water flow and agitate the laundry. Washing. That is, the laundry is cleaned by the mechanical force of the pulsator and the effect of the detergent.
Japanese Patent Laid-Open No. 7-80185

  By the way, in such a washing machine, there is a demand for reducing the amount of detergent used in order to reduce the cost for the washing operation.

  Therefore, an electrolysis device that electrolyzes the water stored in the washing tub is provided, and instead of the washing process of washing the laundry using a conventional detergent, the laundry is electrolyzed by the electrolysis device while applying mechanical force to the laundry. It is conceivable to realize a washing machine that performs an electrolytic washing process for washing things.

  In this electrolytic washing process, dirt is peeled off from the laundry mainly by the mechanical force of the pulsator. Then, the peeled dirt is decomposed by active oxygen generated by electrolysis to prevent the dirt from reattaching to the laundry. In this way, the laundry can be cleaned without using a detergent.

  There is also a desire to disinfect the laundry simultaneously with the laundry. On the other hand, after the washing process using a detergent or the above-described electrolytic washing process, electrolytic rinsing is performed by sterilizing laundry by acting hypochlorous acid or hypochlorite ions generated by electrolysis using an electrolysis apparatus. It is also possible to realize a washing machine that performs the process.

  However, the following problems arise in realizing such a washing machine.

  First, water having a high detergent concentration may be used in an electrolytic washing process or an electrolytic rinsing process (hereinafter collectively referred to as an electrolytic washing process). For example, when performing a washing course in which washing is performed without using a detergent by performing an electrolytic washing process, there may be a case where the user mistakenly inserts the detergent. Further, in the washing course in which the electrolytic rinsing process is performed after the washing process using the detergent, there may be a case where the electrolytic rinsing process is performed in a state where a large amount of the detergent used in the washing process remains in the laundry.

  And when electrolysis is performed in such a state where the detergent concentration is high, there is a possibility that desired electrolysis may not be performed unlike normal water (tap water) due to the influence of components in the detergent. is there. Moreover, the electrical conductivity is often very good depending on the components of the detergent. In this case, there is a possibility that an overcurrent flows and the energization circuit of the electrolysis apparatus is damaged.

  Further, bath water containing a bath agent may be used in the electrolytic washing process. Even when the bath water containing the bath agent is electrolyzed, there is a possibility that desired electrolysis may not be performed or an overcurrent may flow due to the influence of the components of the bath agent.

  Furthermore, the electrolysis apparatus generally includes an electrode, and the electrode is made by coating a base material made of titanium or the like with a thin film material serving as an oxidation catalyst such as platinum or titanium oxide.

  Since this thin film material is consumed every time the electrolysis apparatus is operated, it will eventually disappear completely over the years. And when electrolysis is performed in a state where the thin film material is lost in this way, the base material melts, which may adhere to the clothes being washed and may contaminate the laundry.

  An object of the present invention is to provide a washing machine capable of reliably performing washing and sterilization utilizing electrolysis by solving such problems.

  The washing machine according to claim 1 of the present application that solves the above-described problems includes a washing tub for storing laundry, a water supply means for the washing tub, and a washing means for washing the laundry in the washing tub with mechanical force. The electrolyzing means for electrolyzing the water stored in the washing tub; and the operation of the water supply means, the washing means and the electrolysis means, and the operation of the water supply means collects water in the washing tub and performs the electrolysis. And a control means for performing the electrolytic washing process of washing or rinsing the laundry by the operation of the washing means, wherein the concentration of the bathing water stored in the washing tub is high The bath is provided with a bath agent detecting means for detecting when the magnitude of the current flowing through the electrolysis means exceeds a predetermined upper limit current value, and the control means has a higher bath agent concentration by the bath agent detecting means in the electrolytic washing process. thing When it is detected, said electrolytic means is stopped is characterized in that to stop the electrolysis.

  In the washing machine according to the first aspect, in the electrolytic washing process, when the bath agent concentration in the bath water is high, the electrolysis is stopped. Therefore, undesired electrolysis can be prevented and damage to the energization circuit due to the occurrence of overcurrent can be prevented.

  Hereinafter, a fully automatic washing machine which is an embodiment of a washing machine according to the present invention will be described with reference to the drawings. Note that the left and right directions are as viewed from the front.

  FIG. 1 is a side sectional view showing a configuration of a fully automatic washing machine of the present embodiment. Inside the casing 1 of the washing machine, a bottomed cylindrical outer tub 2 has a front suspension bar 3 and a rear suspension bar 4 (one in each figure is visible, but in reality there are two each. Is suspended so as to incline forward. Corresponding to the protrusion of the outer tub 2 toward the upper front, the front upper portion of the housing 1 also projects. Note that the front surface of the housing 1 has a large opening, and the opening 16 is detachably covered with a front panel 17. For this reason, the upper part of the front panel 17 projects corresponding to the projecting of the upper part of the outer tub 2.

  Inside the outer tub 2, a washing and dewatering tub 5 having a number of dewatering holes on its peripheral wall is pivotally supported around a dewatering tub shaft 6. The outer tub 2 and the washing / dehydrating tub 5 constitute a washing tub (washing tub) of the present invention. A pulsator 7 (corresponding to the washing means and the washing means of the present invention) for generating a water flow in the outer tub 2 and stirring the laundry is disposed at the bottom of the washing and dewatering tank 5. A driving mechanism 10 for driving the pulsator 7 and the washing / dehydrating tub 5 is provided at the bottom of the outer tub 2. The drive mechanism 10 includes a dewatering tank shaft 6, a blade shaft 9 that is a rotating shaft of the pulsator 7, a motor 8 provided coaxially with the dewatering tank shaft 6 and the blade shaft 9, and a motor. 8 is provided with a clutch for switching between transmitting the power of 8 to only the blade shaft 9 or transmitting to both the blade shaft 9 and the dewatering tank shaft 6. The drive mechanism 10 rotates only the pulsator 7 in one direction or both directions mainly during the washing operation and the rinsing operation, and the washing / dehydrating tub 5 and the pulsator 7 are integrated in one direction (this is the normal rotation direction) during the dehydration operation. )). The washing and dewatering tub 5 rotates once by the motor 8 rotating once. On the other hand, since a speed reduction mechanism (not shown) is provided in the middle of the blade shaft 9, the pulsator 7 rotates in accordance with the speed reduction ratio of the speed reduction mechanism.

  In the upper rear of the outer tub 2, there is provided a water inlet 11 provided with a detergent container 12 for pouring detergent stored therein. The detergent container 12 is partitioned into a detergent container 12a for storing detergent and a finishing agent container 12b for storing a soft finish.

  As shown in FIG. 5, two water supply valves 13 for supplying tap water are provided on the right side of the water inlet 11. The first valve 13a (corresponding to the water supply means and tap water supply means of the present invention) of the water supply valve 13 is connected to the detergent container 12a, and the second valve 13b is connected to the finishing agent container 12b. When the first valve 13a is opened, tap water flows into the detergent container 12a from an external water faucet or the like, and tap water is spouted into the washing and dehydrating tank 5 below. At this time, if the detergent is contained in the detergent container 12a, the detergent is put into the washing and dewatering tank 5 together with tap water. On the other hand, when the second valve 13b is opened, tap water flows from the external water faucet or the like into the finishing agent storage portion 12b, and the tap water is discharged toward the lower washing and dewatering tub 5. At this time, if the soft finishing agent is put in the finishing agent storage portion 12b, the soft finishing agent is put into the washing and dehydrating tank 5 together with the tap water.

  A bath water pump 59 (corresponding to the water supply means and bath water supply means of the present invention) is provided on the left side of the water inlet 11. This bath water pump 59 is connected to the detergent container 12a, like the first valve 13a. When the bath water pump 59 is driven, the bath water flows into the detergent container 12a, and the bath water is discharged toward the lower washing and dewatering tank 5. One end of a drain pipe 14 is connected to the front end of the bottom of the outer tub 2, that is, the bottom, and the drain pipe 14 is opened and closed by a drain valve 15. Although not shown, the other end of the drain pipe 14 is connected to an external drain groove via a standing drain hose. The opening / closing operation of the drain valve 15 is related to the clutch switching operation described above. When the attached torque motor 26 (see FIG. 7) is not operating, the drain valve 15 is closed, and the pulsator 7 is used for washing and washing. When the torque motor 26 is operated and the wire is pulled halfway, the pulsator 7 and the washing / dehydrating tub 5 are connected with the drain valve 15 closed. When the wire is further pulled, the drain valve 15 is opened while the pulsator 7 and the washing / dehydrating tub 5 are connected.

  As described above, in the washing machine of the present embodiment, the outer tub 2 and the washing and dewatering tub 5 are inclined forward so that the upper surface opening is directed forward rather than vertically upward. That is, the central axis CL of the outer tub 2 is arranged so as to be inclined by a predetermined inclination angle α with respect to the vertical line VL. Therefore, a user standing in front of the washing machine can easily see the bottom of the washing and dewatering tub 5 and can easily take out the laundry. Here, when the inclination angle α is in the range of about 5 to 20 degrees, the laundry can be easily taken out, and the protrusion of the housing 1 can be prevented from becoming too large. In this embodiment, the inclination angle α is set to about 10 degrees.

  Now, an electrolysis device 31 (corresponding to electrolysis means of the present invention) is provided at the lower portion of the outer peripheral wall of the outer tub 2. The electrolysis apparatus 31 is unitized, is made separately from the outer tub 2, and is attached to the outer tub 2 with screws or the like. The electrolyzer 31 is provided on the front side of the outer tub 2, and the electrolyzer 31 appears only by removing the front panel 17. With such a configuration, the electrolysis apparatus 31 can be easily repaired or replaced.

  The electrolyzer 31 includes an electrolyzer 32 provided as a separate chamber from the outer tub 2, a pair of electrodes 33 disposed in the electrolyzer 32, and an upper portion connecting the upper portion 69 of the electrolyzer 32 and the outer tub 2. A water passage 34 and a lower water passage 35 connecting the lower part of the electrolytic cell 32 and the outer tub 2 are provided.

  The electrolyzer 31 is attached at such a height that at least a part of the pair of electrodes 33 is submerged when the water level stored in the outer tub 2 becomes the washing water level.

  The pair of electrodes 33 includes a first electrode 33a and a second electrode 33b, and both the first electrode 33a and the second electrode 33b have a rectangular thin plate shape. The electrolytic cell 32 is formed in a thin box shape such that the depth dimension (see D1) with respect to the peripheral wall surface of the outer tank 2 is small. And the 1st electrode 33a and the 2nd electrode 33b are arrange | positioned in the electrolytic cell 32 along with the predetermined space | interval in the direction so that each electrode surface may face an outer tank surrounding wall. With such a configuration, the amount of the electrolysis device 31 protruding from the outer tub 2 to the outside can be suppressed, so that it is possible to prevent the electrolysis device 31 from colliding with the housing 1 when the outer tub 2 vibrates during dehydration. . Therefore, the enlargement of the housing 1 can be suppressed.

  By the way, it is also conceivable that the electrolytic bath 32 of the electrolysis apparatus 31 is formed integrally with the outer bath 2 and the electrode 33 is attached inside the outer bath 2. In such a case, it is difficult to assemble the electrode 33 inside the narrow outer tub 2, and it is difficult to remove the electrode 33 when performing maintenance or recycling. Therefore, the electrolyzer 31 of the present embodiment has a water treatment unit 60 attached to the outside of the outer tub 2.

  The water treatment unit 60 can be handled integrally at the time of assembly. For example, the water treatment unit 60 can be configured as the above-described electrolysis apparatus 31 alone, so that the electrolysis tank 32 and a pair of electrodes 33 disposed in the electrolysis tank 32, A pair of water passages 34 and 35 extending from the electrolytic cell 32 are provided. The electrolytic bath 32 and the pair of water passages 34 and 35 are integrally formed of synthetic resin.

  As shown in FIG. 2, the water treatment unit 60 is attached to the lower part on the front side of the outer tub 2 on the right side when viewed from the front, and uses an empty space between the corner in the housing 1 and the outer tub 2. Are arranged. Further, the water treatment unit 60 is electrically connected to the energization circuit 30 (see FIG. 7). The energization circuit 30 includes a transformer 61 and the like. Although the transformer 61 is usually heavy, it is stably fixed to the high-strength front portion 62 at the corner of the housing 1 that is on the right side when viewed from the front. Moreover, you may attach the transformer 61 to the bottom part 64 of the outer tank 2, and it is preferable in this case to suppress the vibration of the outer tank 2 using the heavy weight of the transformer 61.

  The water treatment unit 60 and the transformer 61 are in the vicinity of the service opening 16 of the housing 1, and through the service opening 16, maintenance work such as assembly work, repair and replacement, and disassembly work for recycling are easy. become. Further, since the water treatment unit 60 and the transformer 61 are close to each other, electrical connection between them is easy. Furthermore, the water treatment unit 60 and the transformer 61 are detachably fixed by screw tightening, which is preferable for the above-described operation.

  Further, the water treatment unit 60 and the transformer 61 are attached to electrical components for motor rotation control, for example, the motor rotation sensor 24 (see FIG. 7) built in the motor 8 and the front surface portion 63 on the left side of the housing 1. The circuit board 65 for control including the inverter drive part 23 (refer FIG. 7), the wiring components (not shown) which connect these, etc. are being fixed to the position away. Thereby, the bad influence which the noise produced at the time of electrolysis from the transformer 61 etc. exerts on the rotation control of the motor 8 can be suppressed.

  As shown in FIG. 3, the electrode 33 is arranged in parallel with the maximum surface of the thin box-shaped electrolytic cell 32, for example, the front surface portion 71, and has a flat plate shape having a size corresponding to the front surface portion 71. Such an electrode 33 can have a large area, and a required surface area can be realized with a small number of electrodes 33. The electrode 33 is formed by coating the surface of the base material with a thin film member that serves as an oxidation catalyst, and is disposed to face each other. The base material is made of titanium, for example, and platinum is used as the thin film member, for example. Other examples of the thin film member include gold, palladium, platinum iridium, and titanium oxide. Each flat electrode 33 is held at opposite end portions on both sides in the direction along the plate surface, and is maintained at a predetermined inter-electrode pitch. Voltages having opposite polarities are applied to the pair of electrodes 33 to electrolyze water.

  The electrodes 33 are not limited to a pair having opposite polarities. For example, the three electrodes 33 may be arranged side by side with their plate surfaces facing each other. Further, the five electrodes 33 may be arranged side by side with their plate surfaces facing each other. In these cases, the polarities of the electrodes 33 may be alternately switched so that the two adjacent electrodes 33 have opposite polarities. In short, it suffices that at least a pair of electrodes 33 is provided, and hereinafter, a case where a pair of electrodes 33 is provided will be described.

  The upper and lower ends of the electrode 33 are held by the electrolytic cell 32. The upper end portion of the electrode 33 is held in a recess 77 formed inside the electrolytic cell 32. The recess 77 is defined between a pair of ribs that are erected on the inner surface of the upper surface 75 of the electrolytic cell 32. Further, the lower end portion of the electrode 33 is held by the lower surface portion 76 of the electrolytic cell 32 through the terminal cover 85. The terminal cover 85 seals between the lower surface portion 76 of the electrolytic cell 32 and the lower end portion of the electrode 33 while covering the lower end portion of the electrode 33 so that lint does not accumulate. The electrode 33 may be held on both the left and right sides.

  The pitch between the electrodes (see D2), more specifically, the distance between the electrodes 33 (see D3) is preferably, for example, 2 mm or more and 5 mm or less. If the distance is less than 2 mm, the lint is likely to adhere when it enters between the electrodes 33, and the electrolysis efficiency may be easily lowered, and the durability may also be lowered. . On the other hand, if the interval exceeds 5 mm, it is necessary to apply a high voltage in order to maintain high electrolysis efficiency, making it difficult to construct practically. If the distance is 2 mm or more and 5 mm or less, high durability and high electrolytic efficiency can be practically realized.

  It is conceivable that the electrolytic bath 32 is made of a material different from that of the outer bath 2. On the other hand, it is also conceivable that the electrolytic bath 32 is made of the same material as that of the outer bath 2. In this case, handling of the electrolytic cell 32 at the time of recycling becomes easy. For example, the material of the electrolytic cell 32 includes an olefin resin, for example, polypropylene (PP). This resin is also used in the outer tub 2 and can have high chemical resistance against water containing chemicals such as detergents and bleaches. In addition, it is preferable that the material of the electrolytic cell 32 includes a reinforcing material such as glass fiber because a decrease in strength when the water temperature is increased can be suppressed.

  As shown in FIGS. 3 and 4, the electrolytic cell 32 includes a lower surface portion 76, a front surface portion 71, a rear surface portion 72, a right surface portion 73, a left surface portion 74, and an upper surface portion 75 rising from the periphery of the lower surface portion 76. Have. The electrode 33 is disposed inside the surface portions 71 to 76 so that water is stored. The electrolytic cell 32 is formed so as to be thin along the direction in which the front surface portion 71 and the rear surface portion 72 face each other. The electrode 33 is disposed substantially parallel to the front surface portion 71. The electrolytic cell 32 is composed of a pair of divided bodies 78 and 79 (see FIG. 2) that can be divided vertically.

  The upper part 69 of the electrolytic cell 32 is inclined, and one side is high, and the upper surface part 75 of the electrolytic cell 32 is inclined upward to the right in a front view. The upper water passage 34 extends from the rear surface portion 72 corresponding to the raised position. A lower water passage 35 extends from a rear surface portion 72 which is a lower end position of the electrolytic cell 32.

  The pair of water passages 34 and 35 are arranged along the vertical direction substantially parallel to each other. The water passages 34 and 35 are pipes having a circular cross section, and are formed integrally with the rear surface portion 72 of the electrolytic cell 32. The pair of water passages 34 and 35 may be members that communicate the inside of the electrolytic bath 32 and the inside of the outer bath 2 and define a space through which water can pass, and the shape is not limited to a pipe. It may be formed separately from the tank 32 or formed integrally with the outer tank 2.

  Water flows from the outer tub 2 into the electrolytic cell 32 through the lower water passage 35, and the lower water passage 35 functions as an inflow passage. In addition, the water treated in the electrolytic bath 32 flows out to the outer bath 2 through the upper water passage 34. The upper water passage 34 functions as an outflow passage. Such a flow can be generated, for example, by a water flow in the outer tub 2 due to rotation of the pulsator 7.

  In addition, the flow direction of the water in a pair of water flow paths 34 and 35 is not specifically limited, It is also considered that it is reverse to the above-mentioned flow direction. Further, it is sufficient if there is a pair of water passages 34 and 35 corresponding to inflow and outflow, and at least one of these water passages is constituted by a plurality of water passages, for example, three or more water passages. It is also possible to provide it. It is also conceivable to form a pair of water passages integrally. It is also possible to provide a single water passage. For example, it is also conceivable that a pair of water channels for inflow and outflow are provided in a single water channel without partitioning, and the water channel is used for both inflow and outflow. Hereinafter, a case where the lower water passage 35 is an inflow passage and the upper water passage 34 is an outflow passage as described above will be described.

  The pair of water passages 34 and 35 are connected to the outer tub 2 via a packing 81 as shown in FIG. The packing 81 is the same for both water passages 34 and 35, and the water passage 34 will be described. The packing 81 is made of an elastic member such as a cylindrical rubber. The inner periphery of the packing 81 is fitted on the outer peripheral surface of the water passage 34. The outer periphery of the packing 81 is fitted into the connection hole 67 in the outer side surface 66 (circumferential wall surface) of the outer tub 2 from the outer side of the outer tub 2. The packing 81 ensures a long sealing distance between the tubular water passage 34 and the connection hole 67. The packing 81 is attached in a state compressed by a predetermined amount in the radial direction of the cylinder, and seals between the inner periphery of the connection hole 67 and the outer periphery of the water passage 34. The packing 81 can be elastically deformed along the radial direction and the axial direction of the cylinder. Thereby, the packing 81 can absorb each dimension error of the corresponding connection hole 67 and the water flow path 34. Further, the packing 81 can absorb a dimensional error between the pitch between the pair of water passages 34 and 35 and the pitch between the pair of connection holes 67. The packing 81 can absorb thermal deformation generated when hot water is accumulated in the outer tub 2 and can prevent breakage and water leakage. In addition, as the packing 81, an O-ring, a sheet-like thing, etc. other than the above-mentioned cylindrical thing can also be utilized.

  In addition, a plurality of, for example, four attachment portions 80 for screwing the outer tank 2 are formed in the vicinity of the pair of water passages 34 and 35 in the electrolytic tank 32. A screw 86 passing through the insertion hole of the attachment portion 80 is screwed from the outside into a boss 68 erected on the outer surface 66 of the outer tub 2.

  As shown in FIG. 4, the terminal 84 of the electrode 33 is led out through the lower surface portion 76 of the electrolytic cell 32. Accordingly, even if water droplets adhere to the outer wall of the electrolytic bath 32 due to condensation or overflow from the washing tub, it is difficult for such water droplets to short-circuit the terminals 84 of the pair of electrodes 33. Thereby, the insulation between the terminals 84 can be ensured. In addition, a partition plate 87 that partitions between the terminals 84 of the pair of electrodes 33 is provided. The partition plate 87 can prevent the above-described movement of the water droplets and ensure insulation. The partition plate 87 is also used as the mounting portion 80 formed integrally with the electrolytic cell 32, and the number of parts can be reduced.

  The water treatment unit 60 is assembled as follows. The electrode 33 is incorporated in one of the divided bodies 78 in a state where the divided bodies 78 and 79 of the electrolytic cell 32 are separated. The pair of divided bodies 78 and 79 are combined, the seam is sealed, and the assembly of the water treatment unit 60 is completed. In the water treatment unit 60 having the box-shaped electrolytic cell 32, for example, sealing performance and electrolytic performance can be tested by itself before assembling to the outer tank 2. Then, the pair of water passages 34 and 35 are fitted into the connection hole 67 of the outer tub 2 from the outside via the packing 81. The mounting portion 80 of the electrolytic cell 32 is screwed and fixed to the boss 68 of the outer tank 2. The terminal 84 of the electrode 33 and the energization circuit 30 are electrically connected. Further, the water treatment unit 60 can be removed from the outer tub 2 by the reverse operation. Easy disassembly for maintenance and recycling.

  Since the water treatment unit 60 is attached to the outside of the outer tub 2 in this way, the work of assembling the water treatment unit 60 to the outer tub 2, the maintenance work for the water treatment unit 60, the disassembly work for recycling, etc. It can be easily performed from the outside of the outer tub 2. In addition, when the electrode 33 is disposed between the outer tub 2 and the washing / dehydrating tub 5, an extra space in the outer tub 2 and water stored therein are required. When attaching the unit 60 to the outer side of the outer tank 2, it can prevent that the above-mentioned space and water are needed extra.

  Here, the water treatment unit 60 that is easy to work as described above may be any unit that is formed separately from the outer tub 2 and that can be handled integrally. For example, the water treatment unit 60 includes a pair of electrodes 33 and an attachment portion 80 for attachment to the outer tub 2, and electrolyzes water used for washing in cooperation with the single body or the outer tub 2. As long as it has a function of imparting a washing performance to water without mixing a detergent, it is sufficient.

  Moreover, by making the water treatment unit 60 detachable from the outer tub 2, the workability of removal can be further improved. In particular, the electrode 33 containing a noble metal is preferable because it is easy to recycle.

  Furthermore, since the water treatment unit 60 includes the electrolytic cell 32 and the pair of electrodes 33, the water treatment unit 60 can be handled alone during assembly and maintenance, and the work is further facilitated.

  Further, by holding the electrode 33 in the box-shaped electrolytic cell 32 with both ends, it is not necessary to pay strict attention when handling the water treatment unit 60. Therefore, operations such as assembly, maintenance, and disassembly can be further facilitated. Even when the washing / dehydrating tub 5 is housed in the outer tub 2 and vibrates during dehydration, the electrode 33 is firmly held by both ends. Thereby, it can be made difficult to occur that the electrode 33 falls off in the electrolytic cell 32.

  By providing the packing 81 interposed between the water treatment unit 60 and the outer tub 2, when the water treatment unit 60 is assembled to the outer tub 2, due to the elastic deformation of the packing 81, the outer tub 2 and the water corresponding thereto. It is possible to absorb a dimensional error between the portion of the treatment unit 60 and easily assemble, and to achieve sealing between the water treatment unit 60 and the outer tub 2. Therefore, since the adhesion for sealing can be omitted, the labor of assembly can be reduced, and the removal and disassembly can be facilitated.

  Moreover, by providing a pair of water flow paths 34 and 35, the inflow and outflow of the water between the electrolysis tank 32 and the outer tank 2 can be shared, and water is efficiently sent between the electrolysis tank 32 and the outer tank 2. Since it can flow, the treated water can be supplied into the outer tub 2 without waste and effectively used for washing, and the cleaning power and antibacterial power can be enhanced. Moreover, the water from the outer tank 2 can be made to flow in the electrolytic tank 32, and can be electrolyzed efficiently.

  By separating the pair of water passages 34 and 35 from each other, for example, it is possible to prevent treated water from coming out of the electrolytic cell 32 and immediately returning to the electrolytic cell 32.

  By providing a pair of water passages 34 and 35 having different height positions in the thin box-shaped electrolytic cell 32 provided on the outer surface 66 of the outer tub 2, it is possible to suppress the occurrence of water stagnation and air accumulation, It can be efficiently electrolyzed by flowing up and down (see arrows in FIG. 3).

  Further, when water flows upward in the electrolytic cell 32, it flows upward in the electrolytic cell 32 by providing the upper water passage 34 in the upper part 69 of the electrolytic cell 32 that is inclined and raised. The water can be guided along the slope to the upper water passage 34, and the water can be made to flow quickly and easily flow. Further, the lower water passage 35 at the lower end of the electrolytic cell 32 can suppress generation of water stagnation in the electrolytic cell 32. Thereby, the water in the electrolytic cell 32 can be made to flow easily, and it is preferable.

  As described above, the electrode 33 is preferably installed in a place where water flows, and can be electrolyzed efficiently. In particular, the electrode 33 is more preferably installed in a place where water can circulate with respect to the outer tub 2, and the utilization efficiency of the electrolyzed water can be increased. For example, it is conceivable to provide a circulation mechanism for forcibly circulating the water in the outer tub 2 by sucking it from the inlet and taking it out from the outlet, and arranging the electrode 33 in this circulation mechanism. The circulation mechanism can be constituted by a water channel composed of a water-permeable pipe that connects the lower part and the upper part of the outer tub 2 and an electric pump that allows water to flow through the water channel. The configuration of such a circulation mechanism is disclosed in Japanese Patent Application No. 2000-196894, which is another application of the present applicant. In addition, a known configuration in which water is circulated can also be used.

  Further, the electrolytic bath 32 is formed in a thin box shape having a small depth dimension with respect to the outer surface of the outer tub 2, so that the protrusion of the water treatment unit 60 from the outer surface of the outer tub 2 can be reduced. For example, in the case of a thin electrolytic cell 32 that runs along the outer surface 66 as the outer surface of the outer tub 2, as described above, a housing for preventing a collision between the water treatment unit 60 and the housing 1 during dehydration. The increase in size of the body 1 can be suppressed, and space can be saved. Moreover, in the case of the thin electrolytic cell 32 along the bottom part 64 as the outer surface of the outer tank 2, the structure of piping etc. for draining from the electrolytic cell 32 after use can be simplified, and space saving can be achieved. it can.

  In addition, by providing the electrolytic cell 32 at the lower part of the outer tub 2, for example, the bottom 64 and the lower part of the outer surface 66, the water accumulated in the outer tub 2 at a low water level can also be used. For example, electrolytic treatment can be performed from the middle of water supply to the outer tub 2 to shorten the time for electrolysis. In addition, it is possible to realize a course in which water is electrolyzed at a low water level.

  Further, by providing the electrolytic bath 32 on the outer side surface 66 of the outer bath 2 and providing the water passage 35 at the lower end of the electrolytic bath 32, the water passage 35 inside the electrolytic bath 32 is drained from the outer bath 2. Through the outer tank 2.

  It can be considered that at least a part of the electrolytic cell 32 is formed integrally with the outer cell 2. In such a case, it is preferable that the electrolytic cell 32 is provided so as to protrude outward on the outer surface of the outer tub 2 or to form a depression on the inner surface of the outer tub 2. Thereby, since the inner shape of the outer tub 2 can be generally maintained, it is possible to prevent the space efficiency in the outer tub 2 from being lowered and consuming water more than necessary. In addition, when the inner surface of the electrolytic cell 32 and the inner surface of the outer tub 2 are continuous, it is preferable that the inner surfaces are inclined so that water can easily flow between the outer tub 2 and the electrolytic cell 32.

  By the way, yarn waste may be mixed in the water from the outer tub 2. When such yarn waste adheres to the electrode 33, there is a concern that the durability of the electrode 33 may be reduced or the electrolytic efficiency may be reduced. For this reason, even if yarn waste enters the water treatment unit 60 as described below, no problem is caused.

  The corner portion 82 of the electrode 33 is provided with a roundness 83 (partially shown in FIG. 4). As a result, it is possible to prevent an edge from being generated in the electrode 33, so that the yarn waste is hardly caught by the corner portion 82 of the electrode 33 and is easily detached. Therefore, even if lint is caught, it can be autonomously detached from the corner portion 82 by the water flow.

  The roundness 83 includes not only roundness seen when viewed from the direction orthogonal to the plate surface of the electrode 33 but also roundness seen when viewed from the direction along the plate surface. The roundness may be provided in at least some of the corner portions, but is preferably provided in a larger number of corner portions, particularly in all corner portions in water.

  The distance (D3) between the electrodes 33 is set to a distance at which yarn waste does not adhere. As this distance, for example, 2 mm or more is preferable. This is because yarn waste is easily clogged at a distance of less than 2 mm. Further, the distance (D4) between the electrode 33 and the electrolytic cell 32 may be the above-described distance, or may be 0, that is, no gap may be formed between the electrode 33 and the electrolytic cell 32.

  Thereby, the fall of the fluidity of water by adhesion of yarn waste can be prevented. Moreover, it can also prevent that the contact to the electrode 33 of water is prevented by yarn waste. As a result, it is possible to prevent a decrease in electrolysis efficiency due to yarn waste, and to maintain high electrolysis efficiency. Further, since the yarn waste can be allowed to enter the water treatment unit 60, it is not necessary to provide a filter for the yarn waste, and maintenance for the yarn waste can be eliminated.

  By the way, as shown in FIG. 2, some washing machines are provided with a bubble generating device 88 that generates bubbles from the bottom 64 of the outer tub 2 in order to increase the cleaning power. When combining the bubble generating device 88 and the water treatment unit 60, electrolysis can be performed more efficiently.

  The bubble generating device 88 is connected to an air pump 89, an air hose 90 connected to the air discharge port of the air pump 89 and sending air (air), and an end of the air hose 90 is connected to blow out air into the outer tub 2. And a nozzle (not shown). When the bubble generating device 88 is operated at the time of washing, air blows out from the nozzle, passes through the hole of the washing and dewatering tub 5 and enters the inside, and bubbles are generated below the pulsator 7. The bubbles are stirred by the rotating pulsator 7 and crushed into a large number of fine bubbles. When these fine bubbles come into contact with the laundry and burst, ultrasonic waves are generated. At this time, a shock wave in the ultrasonic region is generated, thereby promoting the peeling of the dirt component adhering to the laundry, so that the cleaning ability can be enhanced as compared with the case where no bubbles are added.

  The bubble generating device 88 has a function as an air supply means for supplying air from the lower portion 70 of the electrolytic cell 32 into the electrolytic cell 32 in addition to the original function of increasing the cleaning power. The air supply means generates a water flow by urging the water in the electrolytic bath 32 of the water treatment unit 60 to flow upward. The air hose 90 described above is branched in the middle, one end leading to the nozzle and the other end connected to the electrolytic cell 32.

  As shown in FIG. 4, a single air supply port 91 to which air from the air hose 90 is supplied is formed in the lower portion 70 of the electrolytic cell 32. There may be a plurality of air supply ports 91. During the electrolytic treatment, the air pump 89 is operated. The air supplied from the air supply port 91 into the electrolytic cell 32 becomes bubbles E, floats up in the electrolytic cell 32, and flows to the outer tank 2 through the upper water passage 34 (see the one-dot chain line arrow in FIG. 4). . Along with this, the water accumulated in the electrolytic cell 32 is caused to flow by the air flow (see the broken line arrow in FIG. 4). In particular, when the upper portion 69 of the electrolytic cell 32 is inclined and the water passage 34 is at a high position, the bubbles quickly flow out of the electrolytic cell 32, so that the water can flow more easily. Air bubbles do not collect between the electrodes 33. As a result, the electrolytic efficiency can be increased. Accordingly, it is possible to reduce the voltage required to obtain a predetermined electrolytic capacity, to reduce the size of electrical components such as the transformer 61, and to use low-cost components, and to reduce the power consumption. You can also

  Further, the air supply port 91 is disposed so as not to overlap the electrode 33 in a plan view, and is disposed so as not to face the electrode 33. Thereby, air is supplied so that the electrode 33 may not be touched. Therefore, it is possible to suppress a reduction in electrolytic efficiency due to air. In addition, the air supply port 91 is preferably separated from the end of the electrode 33 by a predetermined distance in the horizontal direction at the corner of the lower surface portion 76 of the electrolytic cell 32. The predetermined distance is a distance at which air does not normally touch the electrode 33, for example, 10 mm.

  Moreover, the air supply port 91 and the upper water flow path 34 are arrange | positioned so that it may be on a diagonal line by front view. Thereby, since the distance which air flows through the inside of the electrolytic cell 32 becomes long, it can be made easy to move water. The air supply port 91 and the lower water passage 35 are arranged separately on the left and right in a front view. Thereby, water which is difficult to flow far from the lower water passage 35 can be easily flowed by air.

  Thus, the water in the electrolytic cell 32 can be made to flow easily, and it can electrolyze efficiently. Moreover, the air for this purpose is guided into the outer tub 2 and can contribute to the improvement of the cleaning power. Note that the air pump 89 described above may supply air only to the electrolytic cell 32. Below, the case where the bubble generator 88 is abbreviate | omitted is demonstrated. Returning to FIG.

  The upper surface of the housing 1 is composed of an upper surface plate 18. At the center of the upper surface plate 18, a laundry inlet 18a is provided, and the inlet 18a is covered with an upper lid 19 so as to be freely opened and closed. An operation panel 48 is provided in front of the top plate 18.

  FIG. 6 is a plan view of the operation panel 48. The operation panel 48 includes an operation unit 21 and a display unit 28. The operation unit 21 includes a power key 49 for turning on the main body, a start key 36 for starting a washing operation, a course key group 37 for selecting a washing course, a sterilization plus key 42, and a bath water key 43. Etc. are provided.

  The Kosky group 37 includes a standard course key 38 for setting a standard course, a personal course key 39 for setting a personal course, a detergent zero course key 40 for setting a detergent zero course, a forgetting course, It comprises a selection key 41 for selecting a desired course from among a ganko dirt course, a blanket course, a weak washing course, and a dry course. The start key 36 also functions as a temporary stop key for temporarily stopping the washing operation.

  The standard course is a washing course in which a standard washing operation is performed. The self-service course is a washing course in which washing operation is performed with the content set by the user. Oisori course is a washing course with a short washing time. The Ganko dirt course is a washing course in which washing is performed using a high-concentration detergent solution. The blanket course is a washing course for washing large items such as blankets and comforters. Weak washing course is a washing course to wash perishable clothes such as lingerie. The dry course is a washing course for washing dry mark clothing using a dry detergent. These washing courses are courses that use detergents. Tap water and bath water (detergent solution) mixed with detergents are stored in the outer tub 2 and a water flow is generated by rotating the pulsator 7 using the detergent solution. Wash the laundry.

  The detergent zero course is a course that does not use detergent, and electrolyzes tap water and bath water stored in the outer tub 2 by the electrolysis device 31 to generate electrolyzed water, which is used by rotating the pulsator 7 using the electrolyzed water. Generate a water stream to wash the laundry.

  The sterilization plus key 42 is a key that is operated when it is desired to sterilize the laundry washed with the detergent in the standard course, the self-style course, the forgetting course, the ganko dirt course, the blanket course, and the weak washing course.

  The bath water key 43 is a key operated when washing is performed using bath water. The user can operate the bath water key 43 to select the stroke from which the bath water is used among the strokes from the washing stroke (washing) to the final rinsing stroke (rinsing 2). However, as described later, when the sterilization setting is made by the sterilization plus key 42 and when the detergent zero course is set by the detergent zero course key 40, the use of bath water is restricted.

  As the display unit 28, sterilization is set by a course display LED 45 that displays the washing course set by each of the course keys 38, 39, and 40 and the washing course selected by the selection key 41, and the sterilization plus key 42. Sterilization display LED 46, bath water display section 47 indicating the process of use of the bath water by the bath water key 43, electrolysis indicating the progress of electrolysis and sterilization at the time of detergent zero course and sterilization setting A progress display unit 50, a detergent amount display unit 44 for displaying the amount of detergent corresponding to the load amount of the laundry, a segment display unit 52 for displaying the remaining operation time, abnormality display, and the like are provided. In the detergent amount display section 44, a plurality of LEDs are provided in the pattern of the detergent cup, and the number of LEDs corresponding to the detergent amount is turned on to display the amount of detergent.

  FIG. 7 is an electrical configuration diagram of the fully automatic washing machine of the present embodiment. At the center of control is a control unit 20 (corresponding to the control means of the present invention) configured to include a CPU, RAM, ROM, timer, and the like. The control unit 20 is composed of a microcomputer. An operation signal is input to the control unit 20 from the operation unit 21, and a water level detection signal is input from a water level sensor 22 for detecting the level of water stored in the outer tub 2. An open / close detection switch 57 that detects the open / close state of the upper lid 19 is connected to the control unit 20. When the upper lid 19 is open, the control unit 20 can detect this state by turning on and off the internal circuit of the switch 57. Furthermore, an unbalance detection signal is input to the control unit 20 from an unbalance detection switch 58 that detects when the outer tub 2 vibrates abnormally during dehydration due to the unbalance of the laundry in the washing and dewatering tub 5. . The control unit 20 controls the rotation of the motor 8 through the inverter driving unit 23 and controls the operations of the torque motor 26, the water supply valve 13, and the bath water pump 59 through the load driving unit 25. The torque motor 26 controls the operation of the clutch 27 and the drain valve 15 as described above. The control unit 20 also controls the operation of the display unit 28 and the buzzer 29 that notifies the end of operation or abnormality. The motor 8 is provided with a rotation sensor 24 that outputs a pulse signal corresponding to the rotation, and the pulse signal is input to the control unit 20. The rotation sensor 24 is provided to detect the rotation speed of the motor 8, that is, the washing and dewatering tub 5.

  The pair of electrodes 33 is connected to the output side of the control unit 20 via an energization circuit 30 including a transformer 61 and the like. When a signal instructing energization is output from the control unit 20, the energization circuit 30 operates to energize the pair of electrodes 33. A current detection circuit 51 (corresponding to the current detection means, the detergent detection means, and the bath agent detection means of the present invention) is connected to the energization circuit 30. The current detection circuit 51 detects the magnitude of the energization current that is passed through the electrode 33 and outputs the detected current value to the control unit 20.

  In the ROM 20a of the control unit 20, the sequence of each washing course is stored. When a laundry course is selected by operating the cosky unit 37, a sequence corresponding to the laundry course is read from the ROM 20a. And the control part 20 controls various loads, such as the motor 8, according to this sequence, and performs the washing operation of the selected washing course.

  By the way, the fully automatic washing machine of this embodiment can perform sterilization of the laundry simultaneously with the rinsing of the laundry in the washing operation course in which the washing is performed using the detergent such as a standard course by the above-described configuration including the electrolysis device 31. Making it possible is the first feature point. Hereinafter, the first feature point will be described by taking a standard course as an example.

  The flowchart of FIG. 8 shows the washing operation of the standard course. When the standard course is set by the user and the start key 36 is pressed, the standard course washing operation is started.

  First, in a state where water is not supplied into the washing / dehydrating tub 5, the amount of laundry put into the washing / dehydrating tub 5, that is, the load amount is detected (step S1). Specifically, the pulsator 7 is rotated for a short time, and the load amount is determined according to the time during which inertial rotation continues (the total number of pulse signals from the rotation sensor 24). Of course, the load amount detection is not limited to this method, and any method may be used.

  In the fully automatic washing machine of this embodiment, the rated load amount (load amount of laundry that can be washed at one time) in the standard course is 8 kg. And according to this rated load amount, the size (volume) of the washing and dewatering tub 5 and the performance (output) of the motor 8 are set by conducting experiments in advance.

  When the load amount is detected in step S1, the wash water level corresponding to the detected load amount is set based on the table of the relationship between the load amount and the water level (water amount) in the standard course shown in FIG. 9 (step S2). ). Since the rated load is 8 kg, the maximum water level is 59 l (liter) corresponding to 6 to 8 kg. Next, the detergent amount corresponding to the detected load amount is displayed on the detergent amount display unit 44 (step S3). The user sees the display on the detergent display unit 44 and puts an appropriate amount of detergent into the washing and dewatering tub 5. In this way, when the setting of the water level according to the load amount and the display of the detergent amount are finished, a full-scale washing operation is started.

  First, the washing process is executed. The control unit 20 opens the first valve 13a of the water supply valve 13 and supplies water to the set washing water level (step S4). As a result, a detergent solution obtained by dissolving the detergent in tap water accumulates in the outer tub 2. When water is supplied to the washing water level, the first valve 13a is closed.

  Next, the control unit 20 rotates the pulsator 7 in the left and right directions at a predetermined speed to generate a water flow in the outer tub 2 and wash the laundry (step S5). The dirt adhering to the laundry is removed by the effect of the detergent and the effect of the water flow (mechanical force of the pulsator 7). In addition, due to the effect of the detergent, the removed dirt is prevented from reattaching to the laundry. Then, when a predetermined washing time (for example, 10 minutes) elapses, the pulsator 7 stops and finishes washing. The controller 20 opens the drain valve 15 and drains the washing liquid from the outer tub 2 (step S6).

  Thus, when the washing process is completed, intermediate dehydration is performed (step S7). The control unit 20 dehydrates the laundry by rotating the washing and dewatering tub 5 in one direction at a high speed.

  When the intermediate dehydration is completed, the control unit 20 determines whether or not sterilization is set in the washing operation of the current standard course (step S8). When the user wants to sterilize the laundry simultaneously with rinsing in the standard course, the user sets the sterilization by pressing the sterilization plus key 42 before starting the washing operation.

  If it is determined in step S8 that sterilization is not set, normal rinsing is performed. In the standard course, the rinsing process is performed twice. First, dehydration rinsing is performed as the first rinsing process (step S9). That is, the controller 20 supplies the water by opening the first valve 13a while slowly rotating the washing and dewatering tub 5 to about 30 rpm, for example. Thereby, water is uniformly contained in the laundry stuck to the inner wall of the washing and dewatering tub 5 by intermediate dehydration. Next, the control unit 20 rotates the washing / dehydrating tub 5 at a high speed of, for example, about 1000 rpm to dehydrate the laundry. Thereby, the detergent contained in the laundry is blown off with water and removed. The dehydration rinsing may be in the form of dewatering by rotating the washing and dewatering tub 5 at a high speed simultaneously with water supply.

  Thus, when the first rinsing process is completed, the last rinsing process is executed. First, the control part 20 opens the 1st valve | bulb 13a, and supplies water to the set washing water level (step S10). When the water is accumulated up to a certain level during this water supply, the control unit 20 controls the second valve 13b to be turned on / off, and the soft finishing agent stored in the finishing agent storage unit 12b in advance in the washing / dehydrating tub 5 In.

  When water is supplied to the washing water level, the control unit 20 closes the first valve 13a. Then, with the water supply stopped, the pulsator 7 is rotated reversely to the left and right to agitate the laundry, and the laundry is rinsed (step S11). Thereby, the laundry is rinsed. When a predetermined rinsing time (for example, 2 minutes 30 seconds) elapses after the pulsator 7 is rotated to start rinsing, the pulsator 7 is stopped and the rinsing is finished. The controller 20 opens the drain valve 15 and drains the rinsing liquid from the outer tub 2 (step S12). In addition, this last rinse process is good also as the water injection rinse which continues water supply even if it reaches the washing water level.

  Thus, when the final rinsing process is completed, final dehydration is performed (step S13). In this final dehydration, the dehydration time is longer than the intermediate dehydration, and the laundry is sufficiently dehydrated. When this final dehydration is finished, the washing operation of the standard course is finished.

  On the other hand, if it is determined in step S8 that sterilization is set, rinsing is performed to sterilize the laundry simultaneously with rinsing. As in the normal rinsing described above, the rinsing process is performed twice. First, the first rinsing process is executed. In the first rinsing process, rinsing is performed instead of dehydration rinsing. That is, after supplying water to the set washing water level, the laundry is stirred in a state where the water supply is stopped, and the laundry is rinsed (steps S14 and S15). When a predetermined rinsing time (for example, 4 minutes) elapses after the pulsator 7 is operated, the rinsing is finished and the water is drained (S16). Therefore, rinsing increases the amount of water used compared to dehydrated rinsing, but increases the rinsing capacity accordingly. Therefore, the detergent content in the laundry is more diluted than after the dehydration rinsing (first rinsing process) in the case of normal rinsing. The first rinsing process may be a water injection rinse.

  When the first rinsing process is completed, after the second intermediate dehydration is performed (step S17), the process proceeds to the last rinsing process. In this last rinsing process, first, water supply into the washing and dewatering tub 5 is started (step S18). The control unit 20 stops water supply when the water level in the washing and dewatering tub 5 reaches the washing water level, but during this water supply, a predetermined water level lower than the washing water level (for example, a water level two ranks lower in the table of FIG. 9). If it reaches, the electrolytic rinsing for sterilizing the laundry simultaneously with the rinsing is started (step S19). Of course, at this predetermined water level, the pair of electrodes 33 of the electrolysis apparatus 31 are submerged.

  This electrolytic rinsing disinfects laundry by the effect of hypochlorous acid and hypochlorite ions generated by electrolysis. As a result of experiments conducted by the applicant, hypochlorite and It was found that the sterilization effect of the laundry is higher when the electrolyzed water having a high concentration of hypochlorite ions is applied to the laundry at once, than when the electrolyzed water having a low concentration is gradually applied. Therefore, in this electrolytic rinsing, first, a setting process for generating electrolyzed water having a high concentration of hypochlorous acid and hypochlorite ions is performed, and subsequently, the electrolyzed water having a high concentration is immediately discharged into the outer tank. The sterilization rinsing process is performed so that the sterilization rinsing process is performed in a manner such that the sterilization process spreads within the area 2 and acts on the laundry. Hereinafter, the electrolytic rinsing operation will be described in detail based on the flowchart of FIG.

  When the electrolytic rinsing is started, first, a soaking process is performed. That is, the control unit 20 starts the electrolysis by operating the electrolysis apparatus 31 while the pulsator 7 is stopped (step U1).

  The tap water contains trace amounts of iron, calcium, magnesium, chlorine and the like, and active oxygen is generated in the electrolyzed water generated in the electrolytic cell 32 by electrolysis. Chloric acid (HClO) and hypochlorite ions (HClO-) are generated. At this time, since the pulsator 7 is stopped, the water in the outer tank 2 and the electrolytic tank 32 is stopped. Therefore, electrolyzed water having a high concentration of hypochlorous acid or hypochlorite ions is gradually generated in the vicinity of the electrolytic tank 32 in the electrolytic tank 32 or the outer tank 2.

  If it is determined that one minute has elapsed since the start of electrolysis (step U2), the control unit 20 determines a setting time that is an execution time of the setting process. Further, the execution time of the sterilization rinsing process, that is, the stirring time that is the time for the stirring operation by the pulsator 7 is determined. Further, an electrolysis operation time that is a time for operating the electrolysis apparatus 31 is determined (step U3).

  The conductivity of tap water varies from region to region due to different contents of chlorine and the like. For this reason, in the fully automatic washing machine of this embodiment, from the point of protection against the overcurrent of the energization circuit 30, the magnitude of the energization current to the electrode 33 (hereinafter referred to as the energization current value) is controlled by the energization control described later. When the value exceeds 4A (ampere), the average current value is controlled to be about 4A by intermittent energization according to the energization current value. On the other hand, when it is 4 A or less, continuous energization is performed. In this case, if the tap water conductivity is low, the energization current value is small, so the electrolysis capacity is small. Therefore, hypochlorous acid and hypochlorite ions are less likely to be generated, and it takes a long time to reach a predetermined concentration. Further, as the amount of water in the outer tub 2 increases, the electrolyzed water is more diluted when it spreads in the outer tub 2, so it is necessary to increase the concentration of hypochlorous acid and hypochlorite ions. is there. Furthermore, as the load on the laundry increases, more time is required for the electrolyzed water to act on the entire laundry.

  Therefore, a table as shown in FIG. 11 is prepared. The control unit 20 uses this table to determine the extra time based on the energization current value detected by the current detection circuit 51 when one minute has elapsed and the set wash water level (water amount). That is, the smaller the energization current value and the higher the washing water level, the longer the soaking time. Further, the electrolysis operation time is determined so as to correspond to this extra time. That is, the longer the soaking time, the longer the electrolysis operation time. Further, the stirring time is determined based on the washing water level, that is, the load amount of the laundry. That is, since the load amount is large, the stirring time is lengthened as the washing water level is higher.

  Thus, the soaking process is executed until the determined soaking time elapses, and the concentration of hypochlorous acid or hypochlorite ions is present in the electrolytic cell 32 or in the vicinity of the electrolytic cell 32 in the outer tank 2. Accumulated electrolyzed water.

  When the soaking time elapses, the soaking process is terminated, and then the sterilization rinsing process is executed. That is, if it is determined that the extra time has elapsed (step U4), the control unit 20 rotates the pulsator 7 to the left and right. When the air pump 89 is provided, the air pump 89 is operated to supply air into the electrolytic cell 32. Thereby, water begins to circulate between the inside of the outer tank 2 and the inside of the electrolytic tank 32, and hypochlorous acid and hypochlorous acid accumulated in the electrolytic tank 32 and in the vicinity of the electrolytic tank 32 in the outer tank 2. Electrolyzed water having a high acid ion concentration spreads in the outer tank 2 at a stretch. And high-concentration electrolyzed water acts on the laundry at once, and the laundry is sterilized.

  The electrolysis operation time is set longer than the extra time, and therefore electrolysis is continued even if the sterilization rinsing process is started. Therefore, electrolyzed water continues to be generated, and not only hypochlorous acid accumulated in the soaking process but also newly generated hypochlorous acid acts on the laundry. However, in order to suppress consumption of the electrode 33 due to energization for a long time, the electrolysis operation time is set to be shorter than the electrolysis rinsing time that is the sum of the soaking time and the stirring time. For this reason, electrolysis operation time elapses during the sterilization rinsing process.

  When it is determined that the electrolysis operation time has elapsed (step U6), the control unit 20 stops the operation of the electrolysis apparatus 31 (step U7). Thereafter, the sterilization rinsing process is continued only by the operation of the pulsator 7. During this time, the laundry is further sterilized because the laundry is stirred in the already generated electrolyzed water.

  If it is determined that 2 minutes before the stirring time has ended, that is, 2 minutes before the end of the electrolytic rinsing (step U8), the control unit 20 controls the second valve 13b to be turned on / off, and the finishing agent storage unit 12b Water is supplied and the soft finish is put into the washing and dewatering tub 5 (step U9). At this time, the first valve 13a is also opened and water is supplied to dilute the soft finish. By introducing the softening finish, the sterilized laundry is finished softer. Thus, when it is determined that the stirring time has elapsed (step U10), the control unit 20 stops the pulsator 7 and ends the electrolytic rinsing (step U11).

  Thus, when electrolytic rinsing is completed, drainage is performed (step S20), and the final rinsing process is completed. Then, final dehydration is executed (step S13), and the washing operation is terminated.

  Now, the control unit 20 performs energization control of the current flowing through the pair of electrodes 33 while the electrolysis apparatus 31 is operating in electrolytic rinsing, and this energization control processing will be described below according to the flowchart of FIG. To do.

  When the operation of the electrolysis apparatus 31 is started, first, the electrode 31 is energized (step K1). Next, the current detection circuit 51 detects the energization current value. (Step K2). If the detected energization current value exceeds the protection current value 12A, energization is immediately stopped, and energization control is stopped (steps K3 and K4). The protection current value is set to protect the transistors constituting the energization circuit 30. When the protection current value is exceeded, the energization is stopped immediately, thereby preventing the transistor from being damaged due to overcurrent.

  Steps K2 and K3 are repeated until the energization time of 4 seconds elapses. When the energization time elapses, it is determined whether or not the energization current value detected immediately before exceeds the target current value 4A (step K6). If it is equal to or less than the target current value, it is determined whether or not this energization current value is smaller than the lower limit current value 0.3A (step K7). If it has not reached (for example, 3 times) (NO in step K8), the process returns to step K1. In other words, the electrode 33 is continuously energized without stopping energization.

  On the other hand, if it is determined in step K6 that the target current value is exceeded, the energization is stopped (step K10), and the energization stop time is determined according to the energization current value (step K11). That is, the average value of the energization current in one cycle of the energization time and the energization stop time is set to the target current value. For example, the calculation is performed using a calculation formula or the like. In this embodiment, the target current value is set to 4 A and the energization time is set to 4 seconds. For example, if the energization current is 6 A, the energization stop time is 2 seconds, and if the energization current is 8 A, the energization stop time is set. Is 4 seconds.

  Then, it is determined whether or not the energization current value exceeds the upper limit current value 8A (step K12). If the upper limit current value is not exceeded or exceeds, the predetermined number of times (for example, 3 times) is reached. If not reached (NO in step K13), when the energization stop time determined in step K11 has elapsed (YES in step K14), the process returns to step K1. In this way, when an energization current that exceeds the target current value flows, intermittent energization is performed on the electrode 33 and the average value of the energization current is controlled to be the target current value.

  The energization current value is also detected during the energization stop period (step K16). And if it determines with the electric current flowing as a result of this detection, it will be judged that the switching element which switches electricity supply / stop of the electricity supply circuit 30 has failed, and electricity supply control will be stopped. In such a case, the energization circuit 30 cuts off the energization to the switching element.

  Thus, when the operation of the electrolysis apparatus 31 is completed and this is determined in step K9 or step K15, the energization control is ended.

  The energization current value to be compared with the target current value, upper limit current value, and lower limit current value is the energization current value detected immediately before the energization time has elapsed (the energization current value to be compared is detected after a predetermined time from the start of energization. This is because an inrush current flows at the beginning of energization and the current value becomes high, so that an accurate energization current value that is not affected by the inrush current is used. Now, in electrolytic rinsing, the detergent concentration in the rinse water may be high. For example, a case where a lot of detergent is used in the washing process, and this detergent cannot be sufficiently rinsed, and electrolytic rinsing is performed in the final rinse in a state where a large amount remains in the laundry. Thus, when electrolysis is performed in a state where the detergent concentration is high, there is a possibility that desired electrolysis may not be performed unlike normal water (tap water) due to the influence of components in the detergent. Further, the electrical conductivity is often very good depending on the components of the detergent. In this case, an overcurrent flows, and if the operation is continued as it is, there is a possibility that the energizing circuit 30 of the electrolysis apparatus 31 may be damaged. Therefore, in the fully automatic washing machine of the present embodiment, an upper limit current value is set for determining an overcurrent and determining that the detergent concentration is high.

  Moreover, since the thin film material coated on the electrode 33 is consumed every time the electrolysis apparatus 31 is operated, it will eventually disappear completely over the years. And when electrolysis is performed in a state where the thin film material is lost in this way, the base material melts, which may adhere to the clothes being washed and may contaminate the laundry. When the thin film material is consumed and only the base material is used, even if a voltage is applied in the same manner as in the normal state, no current flows through the electrode 33 extremely. Therefore, in the fully automatic washing machine of the present embodiment, a lower limit current value for determining that the thin film material coated on the electrode 33 is used is set.

  For example, the conductivity of the rinsing water becomes very good by increasing the detergent concentration in the rinsing water, and when the energization current value exceeds 8 A, it is determined that the upper limit current value is exceeded in step K12 in the above-described energization control, In addition, it is determined in step K13 that the predetermined number of times has been reached. In this case, it is determined whether or not the polarity of the electrode 33 has already been reversed (the direction of current application has been reversed) (step K19). If the polarity has not been reversed, the polarity is reversed (step K20). Return to, and start energization control again. On the other hand, if the polarity has already been reversed, that is, if the situation that the upper limit current value is exceeded even if the polarity is reversed does not change, the energization control is stopped.

  Also, for example, if the thin film material of the electrode 33 is completely lost, it becomes difficult for the current to flow through the electrode 33, and if the energization current value becomes smaller than 0.3 A, it is smaller than the lower limit current value in step K7. And it is determined in step K8 that the predetermined number of times has been reached. In this case, the energization to the electrode 33 is stopped (step K18), and the energization control is stopped if it is determined in step K19 that the polarity has already been reversed, as in the case where the upper limit current value is exceeded. .

  In addition, even if the energization control to the electrode 33 is stopped in the middle of the electrolytic rinsing and the operation of the electrolysis apparatus 31 is stopped, the rinsing itself continues. Thereby, at least rinsing performance is ensured. However, the soaking process does not contribute much to the rinsing performance. Therefore, when the operation of the electrolysis apparatus 31 is stopped, the soaking process is stopped and the sterilization rinsing process (in this case, simply rinsing) is started. You may do it. Further, when the energization control is stopped, the water may be replaced and the electrolytic rinsing may be performed again.

  As described above, in the fully automatic washing machine of the present embodiment, the rinse water is electrolyzed, and the electrolytic water that causes the generated electrolytic water to act on the laundry is performed. It can be carried out. Furthermore, since the electrolytic rinsing is performed in the final rinsing process, the electrolysis can be performed in a state where the detergent used in the washing process is sufficiently diluted, thereby preventing undesired electrolysis and occurrence of overcurrent. it can. Therefore, the laundry can be sufficiently sterilized.

  In addition, since the sterilization plus key 42 is provided so that the user can select whether or not to sterilize the laundry at the same time as rinsing, sterilization can be performed only when necessary, and power consumption can be suppressed. . Furthermore, when sterilization is not set with the sterilization plus key 42, dehydration and rinsing are performed in the first rinsing process, so that water can be saved and when sterilization is set, the first time The rinse process (rinse with higher rinsing ability than the first rinse process when sterilization is not set) is performed in the rinsing process, so washing is performed before the electrolytic rinsing performed in the final rinsing process. It is possible to sufficiently dilute the detergent of the product, and it is possible to prevent undesired electrolysis and generation of overcurrent during electrolytic rinsing.

  In addition, the electrolytic rinsing is composed of a soaking process and a sterilizing rinsing process, and electrolyzed water having a high concentration of hypochlorous acid and hypochlorite ions is applied to the laundry at once. Can improve the sterilization effect. Furthermore, since the application time of the application process is made longer as the current applied to the electrode 33 is smaller, the electrolyzed water having a sufficiently high concentration of hypochlorous acid and hypochlorite ions in the application process. Can be generated. Furthermore, since the soaking time is increased as the washing water level is higher, that is, the amount of water used is larger, and electrolysis water having a higher concentration is generated by the soaking process, the amount of water is increased in the sterilization rinsing process. Even when the degree of dilution is increased, the electrolyzed water having an appropriate concentration can be applied to the laundry.

  Furthermore, since the electrolysis operation time for operating the electrolysis apparatus 31 in the electrolytic rinsing is made longer as the energization current to the electrode 33 is smaller, the electrolyzed water is sufficiently generated even if the rinsing water is difficult to flow. be able to. Furthermore, since electrolysis operation time is made longer as the washing water level is higher, sufficient electrolyzed water corresponding to the amount of water can be generated. Furthermore, since the execution time of the sterilization rinsing process, that is, the stirring time is made longer as the load of the laundry is larger, even when there is a lot of laundry, the electrolyzed water is allowed to act on the entire laundry. And can sterilize the laundry without unevenness. Furthermore, the electrolytic rinsing time (especially even if it is limited to the stirring time) is performed in the final rinsing process when sterilization is not set, and the first rinsing process when sterilization is set. Since it is made longer than the rinse time for rinsing, the electrolyzed water can sufficiently act on the laundry, and the sterilization effect of the laundry can be enhanced.

  In addition, since electrolytic rinsing is rinsed because water supply is stopped when rinsing is performed up to the washing water level, the electrolyzed water generated by electrolysis is not diluted or drained excessively, and is sufficiently washed. Can be sterilized.

  In addition, when a soft finish is added in the process of final rinsing to perform electrolytic rinsing, electrolyzed water is sufficiently generated by electrolysis, and is added after the electrolysis is completed. It is possible to prevent undesired electrolysis or overcurrent from occurring due to the influence of the above.

  In addition, since the upper limit current value of the energization current to the electrode 33 is set and the electrolysis is stopped when the energization current value exceeds the upper limit current value, the energization circuit 30 can be protected against overcurrent, and the detergent Electrolysis can be prevented in a high concentration state, and unwanted electrolysis can be prevented. Further, a lower limit current value for detecting that the thin film material of the electrode 33 has been set is set, and when the energization current becomes smaller than the lower limit current value, the electrolysis is stopped. It is possible to prevent the material from melting and adhering to the laundry.

  Next, the fully automatic washing machine of this embodiment has a second feature point that a detergent zero course is provided as a washing course. Hereinafter, the washing operation of the detergent zero course will be described with reference to the flowcharts of FIGS.

  This detergent zero course is a course suitable for washing clothes with relatively light dirt, mainly sebum dirt and sweat dirt, and is a course in which no detergent is used by washing with electrolyzed electrolyzed water. Since no detergent is used, it is ideal for washing baby clothes with sensitive skin. In addition, the detergent zero course is an electrolytic washing course in other words, and in the present embodiment, no detergent is used, so that the detergent zero course is referred to as a detergent zero course.

  When the user sets the detergent zero course and presses the start key 36, the washing operation of the detergent zero course is started under the control of the control unit 20.

  First, load amount detection / water level setting processing is performed (step F1). The operation of the load amount detection / water level setting process is as shown in FIG. That is, first, in a state where water is not supplied into the washing / dehydrating tub 5, the load amount of the laundry put into the washing / dehydrating tub 5 is detected (step F101). In the fully automatic washing machine of this embodiment, the rated load amount in the detergent zero course is 4.5 kg. In accordance with the rated load, the performance (output) of the electrolyzer 31 is set by conducting experiments in advance. In addition, if the electrolysis apparatus 31 only sterilizes laundry like the above-mentioned standard course, the performance which can fully sterilize also about 8 kg of laundry which is the rated load amount of a standard course. have.

  When the load amount is detected in Step F101, it is determined whether or not the detected load amount exceeds the rated load amount 4.5 kg (Step F102). If the rated load amount is not exceeded, the washing water level corresponding to the detected load amount is set based on the table of the relationship between the load amount and the water level (water amount) in the detergent zero course shown in FIG. 9 (step F103). ). Since the rated load is 4.5 kg, the maximum water level is 43 l (liter) corresponding to 3 to 4.5 kg. In this detergent zero course, the detergent amount is not displayed because no detergent is used.

  On the other hand, if it is determined in step F102 that the rated load has been exceeded, an overloading sign for notifying that too much laundry is loaded is output (step F104). That is, the buzzer 29 is intermittently operated to sound a buzzer sound “Pi, Phi, Phi, Phi”, and display a user error such as “U8” (error caused by a user's operation error) as a segment display. Take out to part 52. The buzzer sound stops, but the user error display continues until it is determined that the start key 36 has been pressed. It should be noted that the buzzer sound of the oversigned sign is made different from the abnormal sound that informs other failure abnormality or user error by changing the on / off time of the buzzer.

  When the user notices an excessive sign and presses the start key 36, this is determined in step F105, and the output of the excessive sign, that is, the user error display is stopped and the washing operation is interrupted (step F106). When the laundry put too much by the user is removed and the start key 36 is pressed again, this is determined in step F107, and the washing operation is started again.

  When the washing water level is set and the load amount detection / water level setting process is completed, a pre-washing process is executed next. First, the first valve 13a is opened to start water supply into the washing and dewatering tub 5 (step F2). When the water level in the washing and dewatering tub 5 reaches the washing water level, the first valve 13a is closed and the water supply is stopped. During this water supply, a predetermined water level lower than the washing water level (for example, two ranks lower in the table of FIG. 9). When the water level is reached, electrolytic prewashing is started (step F3). Of course, at this predetermined water level, the electrode 33 of the electrolysis apparatus 31 is submerged.

  First, a water flow is generated in the outer tub 2 by rotating the pulsator 7 left and right. At the same time, the electrolyzer 31 is operated. When the air pump 89 is provided, the air pump 89 is operated to supply air into the electrolytic cell 32.

  As described above, by electrolysis, not only hypochlorous acid and hypochlorite ions but also active oxygen is generated in the vicinity of the electrode 33 in the electrolyzed water. Moreover, this electrolyzed water has a weak alkaline property. By the stirring operation of the pulsator 7 and the air supply of the air pump 89, water moves back and forth between the electrolytic bath 32 and the outer bath 2, and the outer bath 2 is gradually filled with the electrolytic water. The dirt adhering to the laundry is removed by the effect of the alkaline water and the effect of the water flow (mechanical force of the pulsator 7). The dirt dropped from the laundry is decomposed by the action of active oxygen in the electrolytic bath 32, and the dirt is prevented from adhering to the laundry again. In addition, since most of hypochlorous acid and hypochlorite ions act on various bacteria in the soil, the sterilization effect of the laundry here cannot be expected so much.

  Then, when a predetermined prewash time (for example, 3 minutes) has elapsed since the start of electrolysis pre-washing, the operation of the electrolysis apparatus 31 is stopped and the pulsator 7 is stopped, and water is drained from the outer tub 2, The washing process is terminated (step F4). In this manner, the laundry is roughly removed by this pre-washing process.

  Also in this electrolytic pre-washing process, energization control to the electrode 33 is performed as in the electrolytic rinsing process. For this reason, in this zero detergent course, if the current value becomes very large due to an accidental introduction of detergent by the user and an increase in the concentration of prewash water, etc. The operation of the electrolyzer 31 is stopped in the middle of washing. However, the operation of the pulsator 7 is continued and the prewashing itself is continued. At this time, if the cause is the detergent, the effect of the detergent compensates for the dirt that does not act on the electrolyzed water. Further, even when the detergent is not the cause, the stain removal is somewhat worsened, but the effect as pre-washing can be achieved.

  In addition, considering the purpose of pre-washing, in which the dirt on the laundry is roughly removed before performing full-scale washing, in this pre-washing process, the life of the electrolyzer 31 and the power consumption are taken into consideration. It is good also as a structure which does not operate | move and does not electrolyze.

  When the pre-washing process is completed, intermediate dehydration is performed (F5). The operation of the intermediate dehydration is as shown in FIG. That is, the washing and dewatering tub 5 is activated and rotated in one direction at a high speed (step F501). Thereby, the laundry in the washing and dewatering tub 5 is dehydrated. When the predetermined dehydration time has elapsed, the washing and dewatering tub 5 is stopped and the intermediate dehydration is terminated (steps F502 and F503).

  During the dehydration operation, the unbalance detection switch 58 detects the unbalance of the laundry in the washing and dewatering tub 5, that is, the abnormal shaking of the outer tub 2 caused by this unbalance. Then, when abnormal shaking of the outer tub 2 is detected by the unbalance detection switch 58, it is determined in step F504 that the laundry is in an unbalanced state, and the washing / dehydrating tub 5 is stopped to stop dehydration (step F505). ). Then, an unbalance correction operation (unraveling operation) is performed in order to eliminate the unbalance of the laundry in the washing and dewatering tub 5 (step F506).

  In the unbalance correction operation, first, the first valve 13a is opened to start water supply (step F561). Next, it is determined whether or not the set washing water level is the highest water level in this detergent zero course (step F562). When the water level is not the highest, when the water is supplied up to the set washing water level, the first valve 13a is closed to stop water supply (steps F563 and F565).

  On the other hand, when it is determined that the washing water level set in step F562 is the highest water level, a loosening water level higher than the highest water level is set. Then, the first valve 13a is closed by supplying water to the level of the loosening water (steps F564 and F565). This loosening water level is, for example, a water level of 51 l (liter), which is two ranks higher than the highest water level of the detergent zero course in the standard course. Thus, when the set washing water level is the highest water level, the unraveling water level is set higher than the highest water level for the following reason. That is, when a little more laundry than the rated load is put, it may be erroneously detected that the load is within the rated load due to various factors. In such a case, the washing water level is the water level corresponding to the rated load amount, that is, the highest water level in the detergent zero course, but in this state the amount of water becomes insufficient with respect to the load amount, It tends to become dumpling, and the laundry tends to become unbalanced in the washing tub. Therefore, when an imbalance is detected under the circumstances where the maximum water level is set, it is expected that the load is slightly higher than the rated load amount as described above. In this case, it is because there is a possibility that the water amount at the highest water level may be insufficient with respect to the actual load amount and cannot be sufficiently loosened.

  Next, when the water supply is completed, the pulsator 7 is activated and rotated reversely to stir the laundry (step F566). As a result, the laundry is loosened and the unbalance of the laundry in the washing and dewatering tub 5 is eliminated. Thus, when a predetermined unwinding time has elapsed, the pulsator 7 is stopped and drained, and then the unbalance correction operation is terminated (steps F567 to F569). When the imbalance is resolved, the dehydration operation is resumed.

  In this way, when the washing water level is set to the maximum water level, if an imbalance is detected, the water is supplied to the level of the loosening water higher than the maximum water level, and the laundry is stirred at this water level. Even if it is slightly higher than the rated load, it can be reliably loosened.

  Now, when the intermediate dehydration is completed, an electrolytic washing process is executed (steps F6 to F8). The operation in the electrolytic washing process is the same as that in the electrolytic prewashing process described above, but the electrolytic washing time for operating the electrolysis apparatus 31 and the pulsator 7 is set longer than the prewashing time. For example, the electrolytic washing time is set to 10 minutes with respect to the prewashing time of 3 minutes. Thus, the laundry is sufficiently cleaned by this electrolytic washing process.

  Also in this electrolytic washing process, energization control to the electrode 33 is performed. For this reason, as described above, the detergent is accidentally put in by the user, the electrolytic washing is performed with a lot of detergent remaining in the laundry, and the electrolysis current value is increased due to an increase in the electrolytic concentration of the washing water. Is extremely large, the operation of the electrolysis apparatus 31 is stopped during the electrolytic washing. At this time, the operation of the pulsator 7 is continued and the washing itself is continued. In this electrolytic washing process, unlike the pre-washing process, it is necessary to sufficiently clean the laundry. Therefore, if the cause is the introduction of detergent, the cleaning performance may be ensured by the effect of the detergent, but if the amount of detergent is not sufficient or is not caused by the introduction of the detergent (such as bathing agents described later) Is caused by the introduction of a substance that improves the electrical conductivity), there is a possibility that sufficient cleaning performance cannot be secured if the electrolysis apparatus 31 is stopped. Therefore, when the energizing current increases and the operation of the electrolysis apparatus 31 is stopped during the electrolytic cleaning process, an additional electrolytic cleaning process described later is executed.

  When the electrolytic washing process is completed, the second intermediate dehydration is performed (step F9). The second intermediate dehydration operation is the same as the first intermediate dehydration operation.

  When the second intermediate dehydration is completed, it is determined whether or not the operation of the electrolysis apparatus 31 is stopped in the middle of the electrolytic washing process because the energization current value exceeds the upper limit current value (step F10). If not canceled, the process proceeds to the electrolytic rinsing process. On the other hand, when it determines with the operation | movement of the electrolysis apparatus 31 being stopped in the middle of the electrolytic washing process, an additional electrolytic washing process is performed (steps F11-F13). The operation of this additional electrolytic washing step is the same as the prewashing step and the electrolytic washing step, but the additional washing time for operating the electrolyzer 31 and the pulsator 7 is set longer than the prewashing time and shorter than the electrolytic washing time. Yes. In this embodiment, for example, the additional washing time is set to 5 minutes. This is because it is washed somewhat by the electrolytic washing process, so that it does not require as much time as the electrolytic washing time, but it needs to be washed more than the pre-washing process.

  When this additional electrolytic washing process is performed, after the third intermediate dehydration is performed (step F14), the electrolytic rinsing process is performed (steps F15 to F17).

  The operation of this electrolytic rinsing process is the same as the operation in the case where sterilization is set in the standard course and electrolytic rinsing is performed in the final rinsing process. The soaking time, agitation time, and electrolysis operation time are as shown in FIG. 11, but since the rated load (maximum water level) is smaller than the standard course, the soaking time and electrolysis operation time are based only on the current value. The stirring time is assumed to be constant. The stirring time is longer than the stirring time corresponding to the same water level and energization current value in the standard course.

  Thus, when the electrolytic rinsing process is completed, final dehydration having a longer dehydration time than intermediate dehydration is performed (step F18). This final dehydration operation is the same as the intermediate dehydration operation except that the dehydration time is long. Then, when the final dehydration is finished, the cleaning operation of the detergent zero course is finished.

  In addition, you may make it change the execution time of electrolytic prewashing (operation time of the electrolysis apparatus 31), and the execution time of electrolytic washing according to the magnitude | size of an energization current. In this case, the smaller the energization current value, the longer the execution time. Moreover, you may make it change the execution time of electrolytic prewashing (operation time of the electrolysis apparatus 31), and the execution time of electrolytic washing according to the load amount of laundry, and the amount of water (water level). In this case, the longer the load amount and the amount of water, the longer the execution time. In this way, the cleaning performance can be ensured more reliably.

  Thus, in the fully automatic washing machine of this embodiment, the electrolysis apparatus 31 is provided, and in the detergent zero course, by performing electrolytic washing and electrolytic rinsing using electrolyzed water generated by electrolysis, the laundry is cleaned. Since the laundry is sterilized, the amount of detergent used can be greatly reduced.

  In addition, the pre-washing process is configured to be performed prior to the electro-cleaning process, and after washing the laundry, rough washing is performed and full-fledged electro-washing is performed. It can be carried out. Therefore, the performance of the electrolysis apparatus 31 is not increased more than necessary, and the electrolysis apparatus 31 is not enlarged. Furthermore, since the electrolysis is performed in this pre-washing process, the pre-washing performance is improved.

  Moreover, since the rated load amount of the detergent zero course is made smaller than the rated load amount of the standard course, the electrolysis device 31 is not enlarged, and an increase in cost can be suppressed and an increase in the size of the washing machine body can be prevented. . In addition, when laundry exceeding the rated load is thrown in the detergent zero course, an over-sign is output to notify the user, so the detergent is zero when the laundry is over-filled. The washing operation of the course can be prevented and the washing performance can be ensured. In addition, the load amount detection for determining overfilling is performed immediately after the start of operation, that is, before the start of water supply, and the overloading is notified before water supply, so that the overfilled laundry is not wetted. Can be taken out.

  Further, when the current value to the electrode 33 is large and the electrolysis is stopped in the middle of the electrolytic washing process, the additional electrolytic washing process, that is, the water is replaced and the electrolytic washing is performed again. Even when electrolysis is stopped in the electrolytic washing process, the washing performance can be ensured.

  By the way, in the fully automatic washing machine of this embodiment, when a user sets using the bath water key 43, washing operation can be performed using bath water. In the case of a normal washing course (such as a standard course), bath water can be used in all the steps from the washing step to the last rinsing step. However, when the sterilization setting is made with the sterilization plus key 42 in a standard course or the like, the use of bath water is prohibited for the electrolytic rinsing performed in the final rinsing process. In the same way, the use of bath water is also prohibited for electrolytic rinsing performed in the zero-course detergent rinsing process. This is because, when bath water is used for electrolytic rinsing, the electrolyzed water acts on germs in the bath water, and the sterilization effect of the laundry is reduced. Hereinafter, the setting operation for using bath water will be described in detail with reference to FIGS.

  When there is a key input by the bath water key 43, the bath water setting process shown in FIG. 16 is executed. That is, if the current setting state is a setting of “no use” of bath water, the use of bath water is set to “wash” (steps G1 and G2). If the current setting state is “washing”, it is determined whether or not the detergent zero course is set (steps G3 and G4). If the detergent zero course is not set, the use of bath water is set to “rinse 1” (step G5), and if set, the use of bath water is set to “none” (step G6). . If the current setting state is “rinse 1”, it is determined whether or not sterilization is set (steps G7 and G8). If the sterilization is not set, the use of the bath water is set to “rinse 2” (step G9). If the sterilization is set, the use of the bath water is set to “none”. (Step G6). If the current setting state is “rinse 2”, the use of bath water is set to “clean shower” (steps G10 and G11). If it is determined in step G10 that it is not “rinse 2”, that is, if the current setting is “clean shower”, the use of bath water is set to “none” in step G6.

  The user usually sets a washing course by operating the course key group 37, and if necessary, sets the sterilization by operating the sterilization plus key 42, and then operates the bath water key 43 to operate the bath water. Set usage. However, in some cases, such as a course change, a washing course setting or disinfection setting may be made after setting the bath water use. The setting process for using bath water in this case will be described.

  First, when there is a key input by each course key, a bath water setting process shown in FIG. 17 is executed. It is determined whether or not the detergent zero course has been set (step G101). If the detergent zero course has not been set, the current setting is maintained (step G102). On the other hand, if the detergent zero course is set, it is determined whether or not the current setting is “rinse 1” or more, that is, “rinse 1”, “rinse 2”, or “clean shower” (step 1). G103), if it is “Rinse 1” or more, the use of bath water is changed to “washing” (step G104). If the setting is “none” or “wash”, the setting is maintained (step G102).

  Next, when there is a key input by the sterilization plus key 42, a bath water setting process shown in FIG. 18 is executed. It is determined whether or not the current setting is “rinse 2” or more, ie, “rinse 2” or “clean shower” (step G201). 1 "(step G202). If the setting is “none”, “washing”, or “rinse 1”, the setting is maintained (step G203).

  In this way, when the use of bath water is set to “wash”, the “wash” LED of the bath water display section 47 is lit. In this state, when the washing operation is started, in the standard course, the bath water pump 59 operates and water is supplied when water is supplied in the washing process. In addition, in the detergent zero course, bath water is supplied when water is supplied in the pre-washing process and the electrolytic washing process.

  Further, when the use of the bath water is set to “rinse 1”, the “wash” and “rinse 1” LEDs of the bath water display section 47 are lit, and in the standard course, the washing process and the first rinsing process are performed. Bath water is supplied. When “Rinse 2” is set, the LEDs up to “Rinse 2” are lit, and bath water is supplied when water is supplied from the washing process to the final rinse process. In addition, when “clean shower” is set, the LED until “shower” lights up, bath water is supplied until the last rinsing process, and after the last rinsing process is finished, the finishing rinsing process is performed. Execute. In the finishing rinsing process, the washing and dewatering tub 5 rotates slowly, and tap water is supplied and applied to the laundry.

  Here, in the standard course, when sterilization is set, as described in the bath water setting process in FIG. 16, only the “rinse 1” can be set by operating the bath water key 43. In addition, as described in the bath water setting process in FIG. 18, even if “Rinse 2” or more is set, the setting is changed to “Rinse 1”. Therefore, in the process before the last rinse process, bath water can be used, so water can be saved, and in the final rinse process, tap water is supplied, and tap water is used for electrolytic rinsing. Hypochlorous acid in the electrolyzed water is not spent on germs in the bath water, and can sufficiently act on the laundry so that the laundry can be sterilized sufficiently.

  When the detergent zero course is set, only “washing” can be set by operating the bath water key 43 as described in the bath water setting process of FIG. In addition, as described in the bath water setting process in FIG. 17, even if “Rinse 1” or more is set, the setting is changed to “Washing”. Therefore, bath water can be used in the process before the electrolytic rinsing process (electrolytic washing process and pre-washing process), so that water can be saved, and tap water is supplied in the electrolytic rinsing process, and tap water is used in the electrolytic rinsing process. Therefore, the laundry can be sterilized sufficiently.

  By the way, as described above, in the detergent zero course, bath water can be used in the pre-washing process and the electrolytic washing process. In this case, the bath water containing the bathing agent may be used for pre-washing or electrolytic washing for electrolysis. And when the bath water containing bathing agent is electrolyzed, if the concentration is high, the desired electrolysis may not be performed or overcurrent may flow due to the effect of the bathing agent components, as in the case of detergents. There is a risk of doing.

  On the other hand, when bath water containing bathing agent is used and the energization current increases depending on the concentration thereof, this is detected in step K12 of the energization control of the electrode 33 performed during the pre-washing and electrolytic washing described above, and the electrolysis apparatus 31. Stop the operation. Therefore, even if bath water containing a bath agent is used, it is possible to prevent undesired electrolysis or an overcurrent from flowing due to the effect of the bath agent.

  In addition, although not shown in the flowchart of FIG. 13, when the use of bath water is set to “washing”, it is determined whether or not the electrolysis is stopped in the middle of the pre-washing process. In this case, tap water is supplied when water is supplied in the electrolytic washing process. As a result, when the electrolysis is stopped due to bath water containing a bath agent in the pre-washing process, such bath water is not used again, and the electrolysis is reliably performed in the electrolytic washing process. It can be carried out.

  Furthermore, even if bath water is used in the electrolytic washing process, tap water is always supplied to the additional electrolytic washing process that is executed when the electrolysis is stopped in the middle of the electrolytic washing process. Thereby, even when the electrolysis is stopped due to bath water containing a bath agent in the electrolytic washing process, the electrolysis can be reliably performed in the additional electrolytic washing process.

  As mentioned above, although one Embodiment of the washing machine of this invention was described, this invention is not limited to said embodiment as shown below, for example.

  The washing machine of the present invention is not limited to a fully automatic washing machine. A so-called drum-type washing machine in which a washing tub is constituted by an outer tub and a horizontal axis type drum provided in the outer tub may be used. Moreover, what is called a two-tub washing machine which provided the washing tub as one tank and provided the dehydration tank separately may be used.

  The washing means of the present invention is not limited to the pulsator 7. For example, in a fully automatic washing machine, when a laundry is washed using a water flow generated by rotation of a washing / dehydrating tub, the washing / dehydrating tub becomes a washing means. In the drum-type washing machine, a drum or a baffle for stirring laundry provided on the drum is a washing means. In short, any means for washing laundry by mechanical force may be used.

  The electrolysis means of the present invention is not provided separately from the washing tub as in this embodiment, but may be provided in the washing tub. Moreover, you may provide in the place where the water in a washing tub is circulated by washing operation. In short, what is necessary is just to electrolyze the water stored in the washing tub.

  The electrolytic rinsing of the present invention may have only a sterilization rinsing process in which rinsing is carried out by mechanical force while electrolysis is performed, as in the case of electrolytic washing, without a soaking process.

  The present invention is not limited to electrolyzing only tap water. In order to accelerate the electrolysis of tap water, salt or sodium hydrogen carbonate may be added to the tap water to form an electrolytic solution, which may be electrolyzed.

  The present invention is significantly less than the amount used in the washing process using the detergent, does not generate an overcurrent, and does not affect the electrolysis of the detergent. It may be a thing.

  Other changes and modifications can be made as appropriate within the scope of the present invention.

1 is a side sectional view of a fully automatic washing machine according to an embodiment of the present invention. FIG. 2 is a partial front sectional view of the fully automatic washing machine shown in FIG. 1. The partial cross section side view of a water treatment unit. The schematic diagram which shows the schematic structure seen from the front of the water treatment unit. The perspective top view of the upper surface board rear part which shows the structure of a water supply mechanism. The top view of the operation panel which shows the structure of an operation part and a display part. The electric system block diagram of the fully automatic washing machine of this embodiment. The flowchart which shows the washing driving operation | movement of the standard course in the fully automatic washing machine of this embodiment. A table showing the relationship between load level and water level in the standard course and detergent zero course. The flowchart which shows the operation | movement of the electrolytic rinse in the fully automatic washing machine of this embodiment. A table for determining the soaking time, stirring time, and electrolysis operation time in electrolytic rinsing. The flowchart which shows the electricity supply control of the electrode in the fully automatic washing machine of this embodiment. The flowchart which shows the washing driving | operation operation | movement of the detergent zero course in the fully automatic washing machine of this embodiment. The flowchart which shows the flow of load amount detection and a water level setting process in detergent zero course. The flowchart which shows the operation | movement of intermediate | middle dehydration in detergent zero course. The flowchart which shows the flow of the setting process of bath water use when the bath water key is operated in the fully automatic washing machine of this embodiment. The flowchart which shows the flow of the setting process of bath water use when a cosky is operated. The flowchart which shows the flow of the setting process of bath water use when the disinfection plus key is operated.

Explanation of symbols

1 housing 2 outer tub (washing tub, washing tub)
5 Washing and dewatering tank (washing tank, washing tank)
7 Pulsator (washing means, washing means)
13 Water supply valve 13a First valve (water supply means, tap water supply means)
13b 2nd valve 20 Control part (control means)
31 Electrolytic device (electrolytic means)
32 Electrolyzer 33 Pair of electrodes 42 Disinfection plus key 43 Bath water key 51 Current detection circuit (current detection means, detergent detection means, bath agent detection means)
58 Unbalance detection switch 59 Bath water pump (water supply means, bath water supply means)

Claims (1)

Washing tub for storing laundry, means for supplying water to the washing tub, washing means for washing laundry in the washing tub with mechanical force, and electrolysis means for electrolyzing water stored in the washing tub And controlling the operation of the water supply means, the washing means and the electrolysis means, and collecting water in the washing tub by the operation of the water supply means to wash or wash the laundry by the operation of the electrolysis means and the washing means. A washing machine comprising a control means for executing a process,
Bathing agent detection means for detecting that the bathing agent concentration in the washing tub is high by detecting that the magnitude of the current flowing through the electrolysis means exceeds a predetermined upper limit current value;
The control means stops the electrolysis and stops the electrolysis when the bathing agent detection means detects that the bathing agent concentration is high in the electrolytic washing process. .

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