JP3631217B2 - Electric washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a washing machine.
[0002]
[Prior art]
In a washing machine, washing is usually performed using a detergent.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a washing machine capable of washing laundry without using a detergent. Moreover, this invention is providing the washing machine which can reduce the usage-amount of a detergent significantly.
[0004]
[Means for Solving the Problems and Effects of the Invention]
The invention according to claim 1 is a laundry tub for storing and washing laundry.Electrolyze water stored in the washing tubThe water can be washed without mixing detergent.ElectrolyzerMix detergent in the water stored in the washing tub, Stop energization of the electrolyzer,Instead of mixing detergent in the first washing course to wash and the water stored in the washing tub,By electrolysis of the electrolyzerA second washing course in which washing is performed using the obtained water;The selection means for the user to select these washing courses, and the first washing course or the second washing course selected by the user using the selection means.And an electric washing machine characterized in that the electric washing machine includes:
[0005]
According to this invention, the usage-amount of detergent can be reduced significantly.Furthermore, in the washing of the first washing course using the detergent, it is possible to reliably prevent overcurrent or the like by stopping energization to the electrolyzer.
[0006]
The invention according to claim 2 is a laundry tub for storing and washing laundry.Electrolyze water stored in the washing tubThe water can be washed without mixing detergent.ElectrolyzerMix detergent in the water stored in the washing tub, Stop energization of the electrolyzer,Instead of mixing the first course of washing and the detergent in the water stored in the washing tub,By electrolysis of the electrolyzerThe second course of washing with the water obtainedThe selection means for the user to select these courses, and the first course or the second course selected by the user using the selection means.When the second course is executed by the washing control means to be executed and the washing control means, the intermediate dehydration time is shortened to shorten the time for the intermediate dehydration to be performed after the washing or rinsing process, as compared to when the first course is executed. An electric washing machine characterized in that it comprises means.
[0007]
According to this invention, the usage-amount of detergent can be reduced significantly.Furthermore, in the washing of the first course using a detergent, overcurrent and the like can be reliably prevented by stopping the energization of the electrolyzer.Further, by shortening the intermediate dehydration time in the second course, the time required for the washing operation in the second course can be shortened.
[0008]
The invention according to claim 3 is a laundry tub for storing and washing laundry,Electrolyze water stored in the washing tubThe water can be washed without mixing detergent.ElectrolyzerMix detergent in the water stored in the washing tub, Stop energization of the electrolyzer,Instead of mixing the first course of washing and the detergent in the water stored in the washing tub,By electrolysis of the electrolyzerThe second course of washing with the water obtainedThe selection means for the user to select these courses, and the first course or the second course selected by the user using the selection means.The washing control means to be executed and the drainage time shortening means for shortening the drainage time for draining the water in the washing tub when the second course is executed by the washing control means compared to when the first course is executed. An electric washing machine is provided.
[0009]
According to this invention, the usage-amount of detergent can be reduced significantly.Furthermore, in the washing of the first course using a detergent, overcurrent and the like can be reliably prevented by stopping the energization of the electrolyzer.Further, by shortening the drainage time of the second course, the time required for the washing operation of the second course can be shortened.
[0010]
The invention according to claim 4 is to electrolyze the washing tub for storing and washing laundry and the water stored in the washing tub.Than, Electrolyzer that gives water washing performance without mixing detergent, first washing course in which detergent is mixed with water stored in the washing tub and washing the water stored in the washing tub In place of mixing, a second washing course for washing using water obtained by electrolysis in the electrolyzer,The selection means for the user to select these washing courses, and the first washing course or the second washing course selected by the user using the selection means.In the washing process of performing washing by mixing detergent in the water stored in the washing tub in the first washing course in the first washing course, the electrolysis apparatus is not energized, and in the rinsing process, An electric washing machine comprising: an energization control means for energizing an electrolyzer.
[0011]
According to the present invention, overcurrent and the like can be reliably prevented by stopping energization to the electrolysis apparatus in the washing process using the detergent. In addition, since the concentration of the detergent in the rinsing process is lower than that in the washing process, water can be electrolyzed without problems in the subsequent rinsing process, and the sterilization effect by the electrolyzed water is obtained. be able to.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
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.
[0013]
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.
[0014]
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 the washing tub of the present invention. A pulsator 7 (corresponding to the water flow generating 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 tub 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.
[0015]
In the upper rear of the outer tub 2, a water inlet 11 provided with a detergent container 11a for introducing a detergent stored therein is provided. A water supply pipe 12 provided with a water supply valve 13 is connected to the water injection port 11. When the water supply valve 13 is opened, tap water is supplied from an external water tap or the like to the water injection port 11 through the water supply pipe 12. The tap water is discharged from the water inlet 11 into the outer tank 2 below. 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 above-described clutch switching operation. When the attached torque motor 26 (see FIG. 6) is not operating, the drain valve 15 is closed and the pulsator 7 is used for washing and washing. The pulsator 7 and the washing / dehydrating tub 5 are connected with the drain valve 15 closed when the torque motor is actuated and the wire is pulled halfway by being separated from the dewatering tub 5. When the wire is further pulled, the drain valve 15 is opened while the pulsator 7 and the washing and dewatering tub 5 are connected.
[0016]
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.
[0017]
Now, an electrolysis apparatus 31 as a water treatment means is provided at the lower part 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.
[0018]
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.
[0019]
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.
[0020]
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.
[0021]
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.
[0022]
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.
[0023]
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. 6). 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.
[0024]
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.
[0025]
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. 6) 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. 6), 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.
[0026]
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 electrodes 33 are made of metal and are disposed to face each other. 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.
[0027]
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.
[0028]
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.
[0029]
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.
[0030]
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.
[0031]
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.
[0032]
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.
[0033]
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.
[0034]
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.
[0035]
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.
[0036]
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.
[0037]
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.
[0038]
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.
[0039]
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.
[0040]
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.
[0041]
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.
[0042]
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.
[0043]
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.
[0044]
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.
[0045]
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.
[0046]
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.
[0047]
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.
[0048]
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.
[0049]
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.
[0050]
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).
[0051]
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.
[0052]
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.
[0053]
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.
[0054]
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.
[0055]
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.
[0056]
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.
[0057]
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.
[0058]
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.
[0059]
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.
[0060]
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.
[0061]
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.
[0062]
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.
[0063]
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.
[0064]
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.
[0065]
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
[0066]
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.
[0067]
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.
[0068]
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.
[0069]
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.
[0070]
FIG. 5 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, and a course key group 37 as selection means for selecting a washing course. 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 forging course key 40 for setting a forging course, and a careful rinsing course. A careful rinsing course key 41 for setting and a detergent zero course key 42 for setting a detergent zero course are included.
[0071]
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 careful rinsing course is a washing course in which rinsing is performed carefully by increasing the time and frequency of rinsing. These washing courses are courses using detergents. In these courses, tap water (detergent liquid) mixed with detergent is stored in the outer tub 2 and a water flow is generated by the rotation of the pulsator 7, thereby washing the laundry. Wash. These courses correspond to the first laundry course of the present invention.
[0072]
The detergent zero course is a course in which no detergent is used. In this course, the tap water stored in the outer tub 2 is electrolyzed by the electrolysis apparatus 31 to be electrolyzed water, and a water flow is generated by the rotation of the pulsator 7. Wash the laundry. This detergent zero course corresponds to the second washing course of the present invention.
[0073]
The display unit 28 displays a course display unit 43 that displays which laundry course is set, a detergent amount display unit 44 as a notification unit for displaying the amount of detergent corresponding to the load of laundry, and a detergent. It comprises a detergent zero display unit 45 as second notification means for displaying that the charging is not performed by turning on the LED. In the course display unit 43, LEDs 46 are provided in the vicinity of the respective course keys, and the LEDs 46 corresponding to the set washing courses are turned on. In the detergent amount display section 44, a plurality of LEDs 47 are provided in the pattern of the detergent cup, and the number of LEDs 47 corresponding to the detergent amount is turned on to display the detergent amount.
[0074]
FIG. 6 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 as water level detection means for detecting the level of water stored in the outer tub 2. Connected to the control unit 20 is a switch 57 as an open / close detection means for detecting the open / close state of the upper lid 19. 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. The control unit 20 controls the rotation of the motor 8 through the inverter drive unit 23 and controls the operation of the torque motor 26 and the water supply valve 13 through the load drive 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.
[0075]
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.
[0076]
The sequence of each washing course is stored in the ROM 20a (corresponding to the storage means of the present invention) of the control unit 20.
[0077]
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.
[0078]
Now, the operation of the fully automatic washing machine of the present embodiment based on the above configuration will be described. First, a case where a standard course, which is a representative course of a washing course in which detergent is used, is selected by the user will be described with reference to the flowchart of FIG.
[0079]
When the start key 36 is pressed and the start of the washing operation is instructed, the amount of laundry put into the washing and dewatering tub 5, that is, the load amount is detected before supplying water (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. In this case, the pulsator 7 and the control unit 20 constitute the load amount detection means of the present invention. Of course, the load amount detection is not limited to this method, and any method may be used.
[0080]
Next, the washing water level corresponding to the detected load amount is set (step S2), and the detergent amount corresponding to the 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.
[0081]
Next, tap water supply is started and water is supplied to the set washing water level (steps S4 to S6). As a result, a detergent solution obtained by dissolving the detergent in tap water accumulates in the outer tub 2.
[0082]
Next, by rotating the pulsator 7 in one direction or both directions at a predetermined speed, a water flow is generated in the outer tub 2 to wash the laundry (step S7). Dirt adhered to the laundry is removed by the effect of detergent and water flow. When a predetermined washing time has elapsed, the pulsator 7 stops and finishes washing (steps S8 and S9).
[0083]
Thus, when the washing is completed, the intermediate dehydration 1, the rinsing 1, the intermediate dehydration 2, the rinsing 2, and the final dehydration are sequentially performed to finish the washing operation.
[0084]
Now, the case where the user selects the detergent zero course that does not use the detergent will be described with reference to the flowchart of FIG.
[0085]
When the start key 36 is pressed and the start of the washing operation is instructed, the detergent amount display unit 44 is not displayed, but the LED of the detergent zero display unit 45 is turned on instead (step S11). This informs the user that no detergent is added.
[0086]
Next, tap water supply is started (step S12). Water supply is performed up to a washing water level (specifically, a low water level) in a predetermined detergent zero course. When the water level in the outer tub 2 reaches a predetermined water level that is lower than the washing water level and the pair of electrodes 33 of the electrolysis device 31 is submerged, the electrolysis device 31 operates, that is, energizes the pair of electrodes 33 (step S13). , S14). Further, a water flow is generated in the outer tub 2 by rotating the pulsator 7 in one direction or both directions at a predetermined speed (step S15).
[0087]
Tap water contains trace amounts of contents such as iron, calcium, magnesium, and chlorine. Therefore, electrolysis is performed in the electrolytic bath 32 to generate electrolyzed water. Further, tap water moves back and forth between the electrolytic bath 32 and the outer bath 2, so that the inside of the outer bath 2 is gradually electrolyzed. Will be filled with water. This electrolyzed water has a weak alkaline property. In addition, active oxygen is generated in the electrolyzed water in the electrolytic cell 32, and hypochlorous acid (HClO) and hypochlorite ions (ClO-) are generated. Hypochlorous acid and hypochlorite ions flow into the outer tank 2 together with the electrolyzed water. In the outer tub 2, dirt attached to the laundry is removed by the effect of alkaline water and the effect of water flow. In addition, the laundry is sterilized by the effect of hypochlorous acid and hypochlorite ions. The dirt removed from the laundry is decomposed in the electrolytic bath 32 by the effect of active oxygen, and the dirt is prevented from reattaching to the laundry.
[0088]
Thus, when the washing water level is reached, water supply is stopped (steps S16 and S17). On the other hand, the operation of the electrolyzer 31 and the pulsator 7 is continued. When the predetermined washing time ends, the operation of the electrolysis apparatus 31 (energization of the pair of electrodes 33) is stopped and the pulsator 7 is stopped, and the first washing is finished (steps S18 to S20).
[0089]
The operation between step S13 to step S20 will be described with reference to the timing chart of FIG.
[0090]
When water supply is started (timing t1), the water level in the outer tub 2 reaches the predetermined electrolytic water level H1. This electrolytic water level is set as a water level at which the electrolytic treatment can be started. For example, at least a part of the pair of electrodes 33 is more preferably a water level at which almost the entire electrode 33 is submerged. The electrolytic water level is lower than the washing water level H2 required for washing or rinsing. Then, the water level sensor 22 detects that the water stored in the outer tub 2 has reached a predetermined water level (timing t2). The control unit 20 starts energizing the pair of electrodes 33 in response to an output signal from the water level sensor 22 corresponding to the electrolyzed water level H1. When the air pump 89 is provided, the air pump 89 is operated in conjunction with the energization of the electrode 33 to supply air to the electrolytic cell 32. As a result, a water flow is generated in the electrolytic bath 32 and the electrolytic treatment is efficiently performed. Further, along with the electrolytic treatment, the motor 8 is driven while being reversed, thereby rotating the pulsator 7 in both directions. During this time, water supply continues. When the water level in the outer tub 2 reaches the washing water level H2, this is detected by the water level sensor 22 (timing t3), and the water supply valve 13 is closed. Thereafter, driving of the motor 8 and the air pump 89 is stopped, and energization to the electrode 33 is also stopped (timing t4). After the water supply valve 13 is closed, the water level in the outer tub 2 slightly decreases. Correspondingly, water supply is performed again (time t5 to t6) so that the water level returns to the washing water level H2, and the washing operation is performed for a predetermined time. During this time, the motor 8 and the air pump 89 are driven and the electrode 33 is energized (timing t6 to t7). The electrolytic treatment is temporarily interrupted when the washing water level H2 is reached, but may be continuously performed without interruption during this time.
[0091]
In this way, by starting energization for electrolysis from the time when water has accumulated to an electrolyzed water level lower than the wash water level, electrolysis can be started compared to when energizing after reaching the wash water level. Since the start timing can be advanced, electrolysis can be performed for a long time, and as a result, so-called concentrated electrolyzed water having a high degree of electrolysis can be generated. For example, the degree of alkalinity can be increased and the concentration of hypochlorous acid or hypochlorite ion can be increased. As a result, the cleaning ability can be increased.
[0092]
Further, by supplying air by the air pump 89 in conjunction with energization for electrolysis, the air promotes the flow of water in the electrolytic bath 32, and water electrolysis is performed efficiently, so that concentrated electrolyzed water is obtained. be able to.
[0093]
Next, after performing intermediate dehydration, the same washing as the first washing is performed as the second washing. When the second washing is finished, final dehydration is performed, and the washing operation of the detergent zero course is finished.
By the way, the electrolyzed water obtained by the electrolysis treatment is preferable because it has a high cleaning ability and the like so as to be so-called deep electrolyzed water within a predetermined range of electrolysis that is usually obtained. On the other hand, when trying to obtain concentrated electrolyzed water, there is concern about overcurrent during electrolytic treatment. That is, normally, the ease of current flow varies depending on the conductivity of water, and the electrolysis current varies when the voltage is kept substantially constant. For this reason, if the energization current for standard water is increased in order to obtain concentrated electrolyzed water, overcurrent is likely to occur in the case of water that is easy to pass current. In addition, in the case of water that is easy to pass current, if the original energizing current is made small in order to prevent overcurrent, depending on the conductivity of water, the degree of electrolysis may be reduced in the case of water that is difficult to pass current. It may be low and the cleaning ability may be low.
[0094]
Therefore, the washing machine of the present invention has the above-described control unit 20, energization circuit 30, and current detection circuit 51 as energization control means for controlling energization for electrolysis with respect to the water treatment unit 60 as shown in FIG. And have. The current detection circuit 51 is connected to the energization circuit 30, detects the magnitude of the energization current energized to the electrode 33, and outputs the detected magnitude to the control unit 20. In accordance with this output and in accordance with the sequence, the control unit 20 and the energization circuit 30 can cooperate with each other to start energization of the water treatment unit 60 and stop this energization. . Further, the direction of current application to the pair of electrodes 33 can be reversed. Further, in the case of intermittent energization, by changing the ratio between the energization time and the cut-off time, while maintaining the voltage, for a predetermined time, for example, longer than the intermittent energization cycle (Referred to as “average current”, including the case of continuous energization; equal to the magnitude of current in the case of continuous energization). It can be adjusted to be substantially different.
[0095]
The contents of control will be described with reference to the flowchart of FIG. Here, a case where the washing process is performed once will be described, but when a plurality of washings are performed, it is performed every time. The same control is performed for the rinsing process.
[0096]
When the washing process is started and the electrolytic process is performed (YES in step S21), an execution flag indicating the execution of the electrolytic process is turned on (step S22). Then, the polarity direction (energization direction) of the pair of electrodes 33 is read from the EEPROM 56 of the control unit 20.
[0097]
The EEPROM 56 stores the energization direction at the time of the last electrolytic process performed first. For example, when the current washing process is the first washing process after the power is turned on, the energization direction in the last rinsing process of the previous washing operation is stored in the EEPROM 56. In addition, when the current washing process is the second washing process of the washing operation, the energization direction in the first washing process of the washing operation is stored.
[0098]
The energization direction between the pair of electrodes 33 is set so that the read energization direction of the pair of electrodes 33 and the current energization direction are opposite to each other, and the pair of electrodes 33 is energized. (Steps S25 to S27). Then, a washing operation is performed for a predetermined time (NO in step S30) (step S29). Meanwhile, the magnitude of the energization current is detected (step S22A), and current control for adjusting the average current is performed according to the detected magnitude of the current (step S29A). Detection is performed (step S23), whether or not the upper lid 19 is in an open state is detected (step S23A), and the continuous energization time is determined (step S24).
[0099]
That is, when it is detected that the magnitude of the energization current exceeds a predetermined current value (NO in step S23), energization to the electrode 33 is interrupted (energization off) (step S28). Then, energization is resumed after a predetermined time. Further, when the elapsed time from the start of energization in the electrolysis process of the process reaches the continuous energization time (YES in step S24), the energization is interrupted (step S28), and then the energization is turned off until the end of the washing process. It will be kept. When it is detected that the upper lid 19 is in the open state (YES in step S23A), the power supply to the electrode 33 is cut off in order to give the user a sense of security (step S28). When it is detected that the upper lid 19 is closed (NO in step S23A), the electrode 33 is energized.
[0100]
When the washing process is completed (YES in step S30), the polarity direction of the electrode 33 in this washing process is stored in the EEPROM 56 as the storage means (YES in step S31, step S32). The EEPROM 56 is included in the control unit 20 so that the stored contents can be rewritten, and the stored contents can be retained even when the power key of the main body is turned off.
[0101]
When the electrolytic treatment is not performed (NO in step S21), the electrode 33 is not energized (step S28), and after the washing operation (YES in steps S29 and S30), the polarity direction is stored. The content is maintained without being changed (NO in step S31).
[0102]
The energization circuit 30 and the current detection circuit 51 are integrally configured as shown in FIG. That is, the relay 52 operated by the control unit 20 as a changeover switch for switching the energization direction to the pair of electrodes 33, the drive transistor 53 for starting and stopping the energization of the electrode 33, and the drive transistor 53 are protected. For this purpose, a protection transistor 54 and a resistor 55 that constitutes a shunt for detecting the magnitude of the energization current to the pair of electrodes 33 are provided. The voltage V2 applied to one end of the resistor 55 is monitored to detect the magnitude of the energization current. In accordance with the detected magnitude of the energization current, the control unit 20 controls to start or stop energization of the electrode 33. Further, a protection transistor 54 is provided as a protection circuit so that energization can be interrupted without using the control unit 20. The collector-emitter voltage (voltage between V1 and V2) of the drive transistor 53 is monitored, and when the monitored voltage exceeds a predetermined value, the protection transistor 54 is operated and the energization by the transistor 53 is interrupted. Is done.
[0103]
As described above, the magnitude of the energization current to the electrode 33 during the electrolytic treatment is detected, and when the detected magnitude of the energization current is a normal value, normal current control (step S29A) is performed. When the magnitude of the detected energization current is an excessive value, overcurrent control (NO in step S23, step S28) is performed.
[0104]
The contents of this overcurrent control and normal current control correspond to the difference in the ease of current flow during electrolysis depending on the concentration of impurities such as calcium in water. When the current in the electrolytic cell 32 is easy to flow, the current in the energizing circuit 30 is supplied with relatively little flow, and when the current in the electrolytic cell 32 is difficult to flow, the current in the energizing circuit 30 is relatively flowed. Easy to supply. As a result, the average current can be set to a constant value, for example, 1 A. As a result, the amount of power required for the electrolysis treatment (the amount of power for electrolyzing the unit amount of water) can be made substantially constant. As a result, electrolyzed water having a substantially constant degree of electrolysis can be obtained. In addition to controlling the average current to be constant, the energization is interrupted or stopped when it is difficult to control the average current. Thereby, generation | occurrence | production of overcurrent can be prevented. In addition, since the average current can be suppressed to a predetermined value or less, the temperature rise of circuit elements such as the transistor 53 during energization can be suppressed.
[0105]
In overcurrent control, an overcurrent is detected. That is, when the magnitude of the energization current detected by the current detection circuit 51 exceeds a predetermined current value, the energization to the electrode 33 is once interrupted (off) for a predetermined time, and then the energization is resumed. For example, if the energization current exceeds 2A and the collector-emitter voltage of the transistor 53 exceeds 1V, the energization is interrupted immediately after the overcurrent is detected, the interruption time is 5 seconds, and the current is re-energized after 5 seconds. To do. The current is detected in the same manner after energization is resumed. When the overcurrent state is maintained as a result of the detection, the resumption of energization is suppressed a plurality of times, for example, up to six times. The mode of energization at the time of resumption is made different. For example, the direction of energization at the time of resumption is the same as the previous direction up to three times, and then the direction of energization is changed in the opposite direction. Even in the last energization restarted in this way, if an overcurrent is detected, the energization is stopped. Even when the energization is stopped after the overcurrent is detected, the energization is performed in the next washing process or the rinsing process. It is also conceivable that after the overcurrent is detected, the energization is stopped without restarting. Further, as a mode of energization to be varied at the time of resumption, it is conceivable to vary energization time, voltage, and current in addition to the direction of energization. It is also conceivable that the mode of energization is not changed when energization is resumed.
[0106]
In normal current control (step S29A), the mode of energization to the electrode 33 is changed according to the magnitude of the energization current detected by the current detection circuit 51. For example, switching between continuous energization and intermittent energization. In the case of intermittent energization, the energization time (the time during which current actually flows, the on time) and the energization cut-off time (off time) may be constant values, but the detected energization current is large. For example, the ratio may be varied depending on the maximum current value, and the ratio between the energization interruption time and the energization time may be varied. Further, the voltages may be different. Further, the magnitude of the energization current may be changed. Together with these, the energization direction may be varied. For example, when the detected energization current exceeds 2 A and the collector-emitter voltage of the transistor 53 is 1 V or less, energization after detection is performed with an energization time of 0.5 seconds and an interruption time of 4 seconds. Intermittent power supply. When the detected energization current exceeds 1 A and is 1.5 A or less, the energization after detection is intermittent energization with the energization time being 2 seconds and the interruption time being 1 second. When the detected energization current exceeds 1.5 A and is 2 A or less, the energization after detection is intermittent energization with an energization time of 1 second and an interruption time of 1 second. If the detected energization current is 1 A or less, continuous energization is performed as it is. As the energization circuit 30 and the current detection circuit 51, other known configurations can be used in addition to the configuration described above.
[0107]
The detection of the magnitude of the energization current (step S22A) is performed in accordance with the timing of energization when intermittent energization is performed.
[0108]
In this way, the control unit 20 changes the mode of energization according to the magnitude of the energization current to the electrode 33 by normal current control, thereby reducing the amount of detergent used for washing and performing electrolytic treatment. It is possible to adjust the energization amount during the electrolytic treatment, that is, the amount of electric power per unit water amount, while suppressing the occurrence of overcurrent. For example, the energization amount can increase the cleaning effect. Therefore, it is preferable for obtaining concentrated electrolyzed water. In addition, the cleaning ability can be kept high regardless of the conductivity of water.
[0109]
Further, the control unit 20 interrupts energization when an overcurrent to the electrode 33 is detected. Thereby, for example, even when the current flow is set to a higher energization current with respect to standard water, it is possible to suppress the occurrence of an overcurrent during the electrolytic treatment for water that easily flows. Further, when energization is resumed after interruption, electrolysis can be continued, which is preferable for obtaining concentrated electrolyzed water.
[0110]
In addition, the current control including intermittent energization keeps the electric energy, particularly the average current substantially constant, so that the energization circuit 30 can have a simple structure.
[0111]
Further, the polarity of the electrode 33 is changed each time by reversing the energizing direction of the current applied to the water treatment unit 60 for each predetermined washing treatment process unit, for example, the washing process and the rinsing process. The bias to one polarity can be suppressed. As a result, it is possible to suppress excessive wear of only one of the electrodes 33 due to such a bias in polarity.
[0112]
In addition, since the reversal of the energization direction is performed for each unit of the washing process, it is not necessary to switch during the electrolysis process, and it is preferable to obtain concentrated electrolyzed water that can be efficiently electrolyzed continuously.
[0113]
Further, the energization direction to the electrode 33 is stored for each predetermined washing process step, for example, the washing step and the rinsing step, and the energization is reversed with respect to the previous time. Thereby, since the energization direction in the subsequent process can be reliably switched with respect to the energization direction in the previous process, the consumption of only one electrode 33 can be suppressed regardless of the contents of the washing process process. For example, even if a single washing process as a washing process process is repeated many times, one polarity of one electrode 33 is not biased.
[0114]
Further, it is more preferable when the storage means can hold the stored contents regardless of whether the power switch is on or off. For example, even when the electrolytic treatment is performed three times in the washing operation every time, the bias of the electrode can be prevented.
[0115]
Contrary to the above description, it is also conceivable that the content stored in the storage means is the next energization direction and energization is performed with the content stored at the next energization. In addition, the timing of storage in the storage means may be performed at other timings during the washing process process in addition to the final washing process process.
[0116]
In addition, it is preferable that consumption of the electrode 33 can be suppressed by suppressing the energization time in the unit process of the washing process process to be less than the maximum energization time. This corresponds to the fact that when one electrode 33 is energized with one polarity for a long time, the electrode 33 is easily consumed. The maximum energization time is set to 15 minutes, for example. Here, the maximum energization time in the case of intermittent energization may be an elapsed time between the start timing of the first energization in the washing process step and the end timing of the last energization, or the washing process. It may be the sum of energization time during which energization is actually performed during intermittent energization in the process.
[0117]
In addition, as said washing process process, for example, it is each process of a washing process or an excessive process, However, It is set as the washing operation which includes two or more of these unit processes, for example, the above-mentioned detergent zero course. Is also possible.
[0118]
By the way, the control content of the above-mentioned control part 20 as a washing control means may be made to differ only in the control content regarding the water treatment unit 60 between both courses, On the other hand, other than the water treatment unit 60 between both courses The control content regarding the part may also be different.
[0119]
For example, in washing operation, intermediate dehydration may be performed after washing or after rinsing. A description will be given with reference to FIG. 12 which is a flowchart of the washing operation in such a case. In such a washing operation, the following steps are performed in order. That is, water supply (step S41), washing (step S42), drainage (step S43), intermediate dehydration 1 (step S44), water supply (step S45), rinse 1 (step S46), drainage (step S47), intermediate dehydration 2 (Step S48), water supply (Step S49), final rinse (Step S50), drainage (Step S51), and dewatering (Step S52). In the first course, a detergent solution is used in the washing process of step S42. In the second course, the electrolytic solution is used in the washing process of step S42.
[0120]
Compared with the 1st course using detergent, control part 20 is time of each process of intermediate dehydration 1, intermediate dehydration 2, and drainage (Steps S43 and 47) in the 2nd course using the electrolytic treatment by water treatment unit 60. And functions as the intermediate dehydration time shortening means and the drainage time shortening means of the present invention.
[0121]
The operation time for the intermediate dehydration step 1 in step S44 is 6 minutes in the first course, but 3 minutes 30 seconds in the second course. The operation time for the second intermediate dehydration process in step S48 is 3 minutes for the first course, but 2 minutes for the second course. The operation time of the drainage process in steps S43 and 47, that is, the time during which the drainage valve is open is 1 minute 40 seconds in the first course, but 1 minute 10 seconds in the second course. The operation time for each of these strokes is set so that the second course is shorter than the first course.
[0122]
Thus, by shortening the time for intermediate dehydration in the second course, the time required for the washing operation in the second course can be shortened. Moreover, in the 2nd course, since there is little usage-amount of detergent, generation | occurrence | production of the foam when water is stirred at the time of the intermediate | middle dehydration after washing or after a rinse is suppressed. As a result, sufficient dehydration can be achieved in a short time. Moreover, since the resistance due to foam can be reduced, the rotational speed of the washing and dewatering tub 5 can be quickly increased, and the dewatering effect can be enhanced.
[0123]
Moreover, the time taken for the washing operation of the second course can also be shortened by shortening the drainage time of the second course. That is, in the 2nd course with little usage-amount of detergent, since generation | occurrence | production of foam can be suppressed compared with the 1st course with much usage-amount of detergent, it can drain in a short time.
[0124]
In a washing course using a detergent such as a standard course, the electrolysis apparatus 31 may be operated at the time of rinsing (rinsing 1 or rinsing 2), and rinsing may be performed using electrolyzed water. Thereby, sterilization can be performed similarly to the rinse of the laundry.
[0125]
Similarly, in a washing course using a detergent such as a standard course, it is conceivable to operate the electrolysis apparatus 31 during washing. However, there is a high possibility that good electrolysis cannot be performed even when water containing detergent is electrolyzed, and there is a concern that overcurrent or the like may occur. Therefore, in the above-described embodiment, in principle, energization to the electrode 33 is stopped in the washing process using the detergent solution, so that overcurrent or the like can be reliably prevented. On the other hand, when the electrolytic treatment is performed at the time of washing using the detergent solution as described above, it is preferable to shorten the energization time or weaken the energization current. Thereby, in addition to the cleaning effect by a detergent, the cleaning power improvement effect and the disinfection effect by electrolyzed water can be obtained while suppressing overcurrent, so that the cleaning power can be further increased. In addition, since the concentration of the detergent in the rinsing process is lower than that in the washing process, water can be electrolyzed without problems in the subsequent rinsing process, and the sterilization effect by the electrolyzed water is obtained. be able to.
[0126]
There is also a washing machine provided with a dry course for washing using a dry detergent. It is preferable not to energize the water treatment unit 60 even in the dry course of such a washing machine. Thereby, the shrinkage | contraction of the clothing by electrolyzed water can be prevented. That is, dry clothes washed with a dry detergent may shrink due to alkaline electrolyzed water. On the other hand, by shortening the energization time to the water treatment unit 60 or energizing the water treatment unit 60 by weakening the energization current, it is possible to obtain a sterilization effect while suppressing shrinkage of the clothes.
[0127]
In addition, it is equipped with an automatic detergent dispenser as an input means that automatically supplies an appropriate amount of detergent according to the detected load, and detergent is automatically introduced in washing courses that use detergent such as the standard course, and no detergent is introduced in the detergent zero course. You may do it. As the above-described automatic detergent feeder, a conventionally known one may be used, and the description of the configuration is omitted here.
[0128]
In addition, some types of washing machines and the like in which a detergent is automatically added perform a pre-washing process first, then drain the water, and then perform a main washing process. The electrolyzed water of the present invention can also be used for such pre-washing.
[0129]
Although the description will be given with reference to the timing chart of FIG. 13, the same components as those of the above-described washing machine are denoted by the same reference numerals, the description thereof will be omitted, and different configurations will be mainly described. When the washing operation is started, water supply is started (timing t11). This water supply is made using the first water supply valve, and water is supplied into the outer tub 2 without supplying the detergent in the automatic detergent dispenser. When water reaches a predetermined water level (electrolytic water level) in the outer tub 2 (timing t12), pre-washing is started. That is, the energization of the water treatment unit 60 is started, the electrolytic treatment is performed, the motor 8 is driven, and the pulsator 7 as the prewash water flow generating means rotates in both directions. Then, when the water reaches the set water level for pre-washing, the water supply is stopped (timing t13). Pre-washing is performed for a predetermined time. When the pre-washing is completed (timing t14), the drive of the motor 8 is stopped, the energization to the water treatment unit 60 is stopped, the electrolysis treatment is stopped, the drain valve 15 is opened, and the water in the outer tub 2 is discharged. Once drained. Then, intermediate dehydration is performed (timing t15 to t16).
[0130]
Next, main washing is performed. First, the second water supply valve is opened (timing t16). By this. Water is fed into the outer tub 2 while the detergent in the automatic detergent dispenser is being charged. When the water reaches the electrolyzed water level (timing t17), the main washing operation is performed. At this time, the electrolytic process is not performed, and the motor 8 is driven to perform washing using a detergent. Then, water is supplied to the washing water level, and the washing operation is performed for a predetermined time (timing t17 to t19).
[0131]
The main washing may be a washing operation using electrolytic water in addition to a washing operation using a detergent.
[0132]
By using electrolyzed water in the pre-washing as described above, it is possible to increase the pre-washing detergency as compared with the pre-washing by water washing, and thus the detergency of the main washing can be enhanced.
[0133]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to said embodiment as shown below, for example.
[0134]
That is, the control content of the present invention described above may be applied to the water treatment unit 60, and is not limited thereto, and can also be applied to the electrolysis apparatus 31. The electrolysis device 31 here may be a unit that is unitized like the water treatment unit 60 and attached to the outer tub 2, a device that is built in the outer tub 2, etc. It may be a separate tank. In short, the electrolysis device 31 only needs to be able to give water washing performance without mixing detergent by electrolyzing water used for washing.
[0135]
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 provided with a washing tub and a separate dewatering tub may be used.
[0136]
The water treatment means of the present invention is not limited to an electrolysis apparatus, but may be any other treatment means that provides cleaning performance by performing a specific treatment on tap water. Furthermore, this invention is not restricted to what electrolyzes 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.
[0137]
The water flow generating means of the present invention is not limited to a pulsator. For example, the washing / dehydrating tub may be rotated to generate a water flow. In this case, the washing / dehydrating tub becomes the water flow generating means. In short, any means for generating a flow of water in the washing tub may be used.
[0138]
The notification means and the second notification means of the present invention are not limited to means for displaying such as the detergent amount display section and the detergent zero display section. For example, it may be a means that informs by voice that the amount of detergent or that no detergent is added.
[0139]
Other changes and modifications can be made as appropriate within the scope of the present invention.
[Brief description of the drawings]
FIG. 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.
FIG. 3 is a partial cross-sectional side view of a water treatment unit.
FIG. 4 is a schematic diagram showing a schematic structure viewed from the front of the water treatment unit.
FIG. 5 is a plan view of an operation panel showing a configuration of an operation unit and a display unit.
FIG. 6 is an electrical configuration diagram of a fully automatic washing machine according to the present embodiment.
FIG. 7 is a flowchart showing a washing operation operation of a standard course in the fully automatic washing machine of the present embodiment.
FIG. 8 is a flowchart showing the washing operation of the detergent zero course in the fully automatic washing machine of the present embodiment.
FIG. 9 is a timing chart showing the washing operation of the detergent zero course in the fully automatic washing machine of the present embodiment.
FIG. 10 is a flowchart showing control contents of energization to the water treatment unit at the detergent zero course in the fully automatic washing machine of the present embodiment.
FIG. 11 is a circuit diagram schematically showing an energization circuit and a current detection circuit according to the present embodiment.
FIG. 12 is a flowchart showing the washing operation of the detergent zero course different from that in FIG. 8 in the fully automatic washing machine of the present embodiment.
FIG. 13 is a timing chart showing driving operations of pre-washing and main-washing in the fully automatic washing machine of the present embodiment.
[Explanation of symbols]
1 housing
2 Outer tub (washing tub)
5 Washing and dewatering tub (washing tub)
7 Pulsator
18a inlet
19 Upper lid
20 control unit (control means, washing control means, intermediate dehydration time shortening means, drainage time shortening means, energization control means)
22 Water level sensor
31 Electrolyzer (water treatment means)
32 Electrolyzer
33 A pair of electrodes (water treatment means)
34, 35 Waterway
51 Current detection circuit
56 EEPROM
57 switch
60 Water treatment unit (electrolyzer)
70 Lower part of electrolytic cell
89 Air pump

Claims (4)

A laundry tub for storing and washing laundry;
An electrolyzer that electrolyzes the water stored in the washing tub so that the water has cleaning performance without mixing detergent; and
Instead of mixing detergent into the water stored in the washing tub, mixing the detergent into the water stored in the washing tub, stopping the energization of the electrolyzer , and washing the water stored in the washing tub, A second washing course for washing with water obtained by electrolysis of the electrolyzer ;
A selection means for the user to select these washing courses;
Control means for executing the first washing course or the second washing course selected by the user using the selection means;
Electric washing machine characterized by including. A laundry tub for storing and washing laundry;
An electrolyzer that electrolyzes the water stored in the washing tub so that the water has cleaning performance without mixing detergent; and
Tub detergent mixed into reservoir was water, the electrolysis is stopped and power supply to the device, a first course of performing washing, instead of mixing the detergent reservoir was water washing tub, wherein A second course of washing with water obtained by electrolysis of the electrolyzer ,
A selection means for the user to select these courses;
A washing control means for executing the first course or the second course selected by the user using the selection means;
When the second course is executed by the washing control means, it includes an intermediate dehydration time shortening means for shortening the time of the intermediate dehydration performed after the washing or rinsing process compared to when the first course is executed. Electric washing machine. A laundry tub for storing and washing laundry;
An electrolyzer that electrolyzes the water stored in the washing tub so that the water has cleaning performance without mixing detergent; and
Tub detergent mixed into reservoir was water, the electrolysis is stopped and power supply to the device, a first course of performing washing, instead of mixing the detergent reservoir was water washing tub, wherein A second course of washing with water obtained by electrolysis of the electrolyzer ,
A selection means for the user to select these courses;
A washing control means for executing the first course or the second course selected by the user using the selection means;
When the second course is executed by the washing control means, it includes a drainage time shortening means for shortening the drainage time for draining the water in the washing tub compared to when the first course is executed. Washing machine. A laundry tub for storing and washing laundry;
More to electrolysis of pooled in the washing tub of water, an electrolytic device to provide cleaning performance to the water without contaminating the detergent,
Obtained by electrolyzing the electrolysis apparatus in place of the first washing course in which the detergent is mixed with the water stored in the washing tub and performing washing, instead of mixing the detergent in the water stored in the washing tub. A second washing course in which washing is performed using water,
A selection means for the user to select these washing courses;
Control means for executing the first washing course or the second washing course selected by the user using the selection means;
In the first washing course, the electrolysis apparatus is not energized in the washing process in which detergent is mixed in the water stored in the washing tub and the electrolysis apparatus is energized in the rinsing process. Energization control means to be executed;
Electric washing machine characterized by including.

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