Washing machine

Abstract

To provide a washing machine improving sterilization performance for laundry.SOLUTION: A washing machine according to the disclosure is constituted so as to allow a single-use water-soluble solid agent to be put in. The washing machine has a washing tub, which is rotatably disposed in a case body, a detergent case to store the detergent fed into the washing tub, a solid agent case to store the solid agent fed into the washing tub, a first water supply valve to supply water into the detergent case, a second water supply valve to supply water into the solid agent case, and a control part to control the first water supply valve and the second water supply valve. The control part conducts a main water supply step by opening the first water supply valve and closing the second water supply valve in a washing step, while opening the second water supply valve and supplying water to the solid agent in a rinsing step after the washing step.SELECTED DRAWING: Figure 13

Description

[Technical Field]

[0001] The present disclosure relates to washing machines. [Background technology]

[0002] For example, Patent Document 1 discloses a washing machine that finishes laundry using metal ions that have a disinfecting effect.

[0003] The washing machine described in Patent Document 1 includes a metal ion generating means for generating metal ions and a control device for controlling the washing, rinsing, and spin-drying processes. The control device activates the metal ion generating means in the final rinsing process. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6857805 Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present disclosure is to wash off the first treatment agent adhering to laundry and maintain the adhesion of the softener component. [Means for solving the problem]

[0006] A washing machine according to one embodiment of the present disclosure comprises a washing tub, a manual dispensing case having a storage compartment for storing a single dose of a first treatment agent, an automatic dispensing unit having a tank for storing fabric softener and automatically dispensing a predetermined amount of fabric softener stored in the tank, a water supply member having a first water supply valve that supplies water to the storage compartment when opened, and a second water supply valve different from the first water supply valve that supplies water to the automatic dispensing unit when opened, and a control unit that controls operation. The control unit controls a first course that executes a washing process, a first rinsing process in which, after the washing process, the first water supply valve is opened to supply the first treatment agent stored in the storage compartment to the washing tub, and a final rinsing process in which, after the first rinsing process, the second water supply valve is opened to supply fabric softener to the washing tub by the automatic dispensing unit. [Effects of the Invention]

[0007] According to the present disclosure, the first treatment agent adhering to the laundry can be washed off, while the fabric softener component can be maintained. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of a washing machine according to an embodiment of the present disclosure; [Figure 2] Perspective view of a detergent supply unit [Figure 3] Perspective view of a detergent supply unit [Figure 4] Perspective view of the manual insertion unit [Figure 5] Cross section of manual feeding unit [Figure 6] Perspective view of the manual insertion unit [Figure 7] Perspective view of a pill case [Figure 8A] Perspective view of a tablet [Figure 8B] Perspective view of a tablet [Figure 9] Top view of detergent supply unit [Figure 10] Cross-sectional view of detergent supply unit [Figure 11] Schematic cross-sectional view of a tablet case [Figure 12A] Disinfection course sequence diagram [Figure 12B] Washing process sequence diagram [Figure 12C] Partial sequence diagram of the first rinse process [Figure 12D] Detergent rinsing step sequence diagram [Figure 12E] Sequence diagram of sterilization steps [Figure 12F] Tablet rinsing step sequence diagram [Figure 12G] Sequence diagram of the second rinsing process and spin-drying process [Figure 13] Diagram showing water level changes during the sterilization course [Figure 14] A diagram showing the operation of the water supply valve and drain valve during the sterilization course [Figure 15] Diagram showing the water level in the washing machine tub DETAILED DESCRIPTION OF THE INVENTION

[0009] (Findings that formed the basis of this disclosure) At the time the inventors conceived the present disclosure, water-soluble solid agents containing sodium dichloroisocyanurate were known as disinfectant technologies for cleaning bathtubs. Inspired by the technology of bathtub disinfectants, the inventors came up with the idea of ​​a washing machine that dispenses a single-use water-soluble solid agent to apply the solid agent's components to laundry. The inventors then discovered that when the dissolved solid agent mixes with other laundry additives, such as detergent or fabric softener, a chemical reaction occurs, resulting in a decrease in disinfecting performance. Furthermore, when the dissolved solid agent adheres to laundry, the laundry may be discolored. The subject matter of the present disclosure was formed to solve these problems.

[0010] (Embodiment) A washing machine 1 according to an embodiment of the present disclosure will be described.

[0011] [Overall configuration] 1 is a perspective view showing a washing machine 1 according to an embodiment of the present disclosure. As shown in FIG. 1, the washing machine 1 includes a housing 2, a water tub 3, a washing tub 4, a detergent supply unit 5, and a control unit C.

[0012] <Case> The housing 2 is a member that forms the exterior of the washing machine 1. An opening 20 and a door 21 that covers the opening 20 and can be opened and closed freely are provided on the top surface of the housing 2.

[0013] <Aquarium> The water tub 3 is provided inside the housing 2 and is a roughly cylindrical member with one end closed so as to store wash water. The water tub 3 may also be referred to as an outer tub.

[0014] <Washing tub> Washing tub 4 is a roughly cylindrical member that is rotatably provided inside water tub 3 and that contains laundry such as clothes. Washing tub 4 has a number of through-holes 40 that communicate with water tub 3. Through-holes 40 allow the movement of wash water and detergent between water tub 3 and washing tub 4. Washing tub 4 also has opening 41 at a position facing opening 20 of housing 2. Laundry is placed into washing tub 4 through opening 41. Washing tub 4 may also be called a drum or an inner tub.

[0015] <Laundry agent supply unit> The laundry agent supply unit 5 is a unit that supplies laundry treatment agents such as liquid agents, powder detergents, and solid agents to the washing tub 4. Supplying laundry treatment agents means discharging them downward toward the washing tub 4. The liquid agents are liquid agents used to wash laundry such as clothes. The liquid agents may include detergent, fabric softener, and neutral detergent.

[0016] The detergent supply unit 5 includes a manual supply unit 6 and an automatic supply unit 7.

[0017] <Mixing mechanism> The agitation mechanism 8 is a member that agitates the water in the washing tub 4. The agitation mechanism 8 is, for example, a pulsator connected to the bottom surface of the washing tub 4. The agitation mechanism 8 performs a reversing operation.

[0018] <Drain valve> The drain valve 9 is configured to be openable and closable, and when opened, drains the water stored in the water tank 3. The drain valve 9 is provided at the bottom of the housing 2.

[0019] <Sensor> Water level sensor 25 measures the level of water contained in washing tub 4. Water level sensor 25 is, for example, a tube filled with air, and detects the water level according to the pressure difference caused by an increase or decrease in the water level. Weight sensor 26 detects the weight of laundry placed in washing tub 4. Water temperature sensor 27 detects the temperature of the water in washing tub 4.

[0020] <Heater> Heater 28 is disposed below washing tub 4 and serves to heat the water in washing tub 4. The maximum temperature of heater 28 is, for example, 65°C.

[0021] <Control unit> The control unit C is a component that controls the operation of the washing machine 1. The control unit C may include, for example, a memory (not shown) that stores a program and a processing circuit (not shown) that corresponds to a processor such as a CPU, and function as these elements by the processor executing the program.

[0022] Next, the configuration of the detergent supply unit 5 will be described with reference to Figures 2 and 3. Figures 2 and 3 are perspective views of the detergent supply unit 5.

[0023] As shown in FIG. 2, the detergent supply unit 5 includes a unit case 50, a lid 50a, a manual dispensing unit 6, an automatic dispensing unit 7, a water supply member 10, and a flow path member 11 (FIG. 3).

[0024] 3, the unit case 50 is a member that houses the manual feeding unit 6, the automatic feeding unit 7, and the flow path member 11. The top of the unit case 50 is open and is covered with a lid 50a.

[0025] The manual dosing unit 6 is a mechanism that allows the user to manually dispense a single dose of laundry agent, such as liquid detergent, powder detergent, or solid agent, each time the washing machine 1 is operated. The laundry agent dispensed into the manual dosing unit 6 flows into the washing tub 4 in the dispensed amount.

[0026] The laundry agent to be dispensed into the manual dispenser unit 6 is contained in a plurality of cases 60, 61, 62, and 63 formed by the manual dispenser unit 6. In this embodiment, each of the cases 60, 61, 62, and 63 contains a single dose of detergent, fabric softener, powder detergent, or water-soluble solid agent (e.g., tablet).

[0027] The automatic dispensing unit 7 is a mechanism that automatically dispenses a predetermined amount of liquid agent from a tank that stores the liquid agent into the washing tub 4. The automatic dispensing unit 7 dispenses an appropriate amount of an appropriate type of liquid agent into the washing tub 4, for example, depending on the amount and type of laundry. The automatic dispensing unit 7 has two tanks 70 and 71 that are arranged in the width direction K (for example, horizontally) and contain the liquid agent, and a pump (not shown) that sucks and discharges the liquid agent. In this embodiment, the tank 70 contains a detergent, and the tank 71 contains a fabric softener.

[0028] The water supply member 10 is a mechanism that supplies water to the detergent supply unit 5 via a flow path member 11. The water supply member 10 is composed of a plurality of water supply valves 10a, 10b, and 10c, and the destination of the water supply can be changed by opening and closing the water supply valves 10a, 10b, and 10c. Specifically, when the water supply valve 10a is opened, water is supplied to the cases 60 and 62; when the water supply valve 10b is opened, water is supplied to the cases 61 and 63; and when the water supply valve 10c is opened, water is supplied to the automatic dispensing unit 7. The water supply valves 10a, 10b, and 10c are, for example, solenoid valves.

[0029] Flow path member 11 is a member that guides water supplied from water supply valves 10a, 10b, and 10c to the supply destinations. Flow path member 11 is provided above cases 60, 61, 62, and 63, and is connected to water supply valves 10a, 10b, and 10c. More specifically, flow path member 11 forms multiple independent paths that connect water supply valves 10a, 10b, and 10c to the supply destinations.

[0030] The water supplied to the cases 60, 61, 62, and 63 of the manual feeding unit 6 flows into the washing tub 4 together with the detergent contained therein.

[0031] Next, the configuration of the manual insertion unit 6 will be described in more detail with reference to Figures 3 to 6. Figure 4 is a perspective view of the manual insertion unit 6. Figure 5 is a cross-sectional view showing the manual insertion unit 6 with the case 63 and the insertion port members 65 and 66 removed. Figure 6 is a perspective view showing the manual insertion unit 6 with the case 63 and the insertion port members 65 and 66 removed.

[0032] 3, the manual insertion unit 6 includes a main body 64. The main body 64 is a member held in the unit case 50 so as to be able to be pulled out in the front-rear direction L.

[0033] 4, inlet members 65, 66 and a case 63 (hereinafter referred to as tablet case 63) are housed in main body 64. Inlet members 65, 66 and tablet case 63 are housed in main body 64 in a detachable manner.

[0034] As shown in Figures 4 and 5, cases 60, 61, and 62 for containing laundry agents are arranged side by side in the width direction K in the main body 64. As described above, the case 60 (hereinafter, detergent case 60) contains a detergent, the case 61 (hereinafter, fabric softener case 61) contains a fabric softener, and the case 62 (hereinafter, powder detergent case 62) contains a powder detergent. In the main body 64, the detergent case 60 and the powder detergent case 62 are adjacent to each other. Meanwhile, a space 67 is provided between the detergent case 60 and the fabric softener case 61, and a tablet case 63 is placed in the space 67.

[0035] As shown in Fig. 5, the fabric softener case 61 has a storage space 78 that stores fabric softener, and a liquid agent discharge flow path 74. The liquid agent discharge flow path 74 has a U-shape that extends upward from an inlet 74a, turns back at the top of the fabric softener case 61, and is connected to a bottom surface 78a of the storage space 78. When a predetermined amount of water accumulates in the storage space 78, the liquid agent discharge flow path 74 sucks up the fabric softener from the inlet 74a and discharges it from an opening 61a formed in the bottom surface 78a of the storage space 78. The detergent case 60 has a storage space 77 that stores detergent, and a liquid agent discharge flow path 73 that is similar to the liquid agent discharge flow path 74.

[0036] The inlet member 65 is disposed in the receiving space 77 and forms an inlet 65a for dispensing detergent. The inlet member 66 is disposed in the receiving space 78 and forms an inlet 66a for dispensing fabric softener.

[0037] The tablet case 63 is a component that contains a water-soluble solid agent used in one sterilization washing course. When water is applied to the solid agent, the solid agent dissolves, and the dissolved solid agent is supplied to the washing tub 4. The solid agent is a solid that is solid or hollow. For example, the solid agent is a solid formed from compressed and aggregated powder. The solid agent may also be referred to as a solid processing agent. In the embodiment, a tablet J will be described as an example of a solid agent.

[0038] Here, Tablet J contains a component that exhibits sterilization performance. Tablet J contains a water-soluble component and has a fixed shape before water is supplied, but when water is applied, it breaks down into small fragments and dissolves in water.

[0039] Regarding the constituent materials of Tablet J, Tablet J may contain a component that generates hypochlorous acid. In an embodiment, Tablet J contains sodium dichloroisocyanurate as a disinfecting component. Tablet J may further contain a component that reacts with water to generate effervescence.

[0040] Regarding the shape of the tablet J, the tablet J may have a shape that allows it to be moved to a predetermined position in the tablet case 63, for example, it has an outer peripheral shape or contour that allows it to move by rolling. In the embodiment, the tablet J has a disk shape (FIGS. 8A and 8B) in which the diameter D0 is greater than the thickness T0.

[0041] The tablets J placed in the tablet case 63 may be specific tablets J intended for use by the manufacturer of the washing machine 1. For example, the tablets J may be one or more designated types of tablets J. Also, for example, the types of tablets J are types selected from a catalog or list stored in the control unit C.

[0042] The tablet case 63 has an insertion opening 63a formed on the front side L1 for inserting tablets J. As shown in Fig. 4, when the tablet case 63 is placed in the main body 64, the insertion opening 63a is located between insertion openings 65a and 66a which are aligned in the width direction K. On the other hand, as shown in Fig. 3, when the main body 64 is pulled out from the unit case 50, the entire surface of the insertion opening 63a is exposed. The insertion opening 63a may have a vertically elongated shape.

[0043] 6, openings 60a, 61a, 62a, and 67a are provided on bottom surface 64a of main body 64 at positions corresponding to cases 60, 61, and 62 and space 67. When water is supplied from water supply member 10 to cases 60, 61, 62, and 63, the contained liquid agent flows out together with the water from openings 60a, 61a, 62a, and 67a toward washing tub 4.

[0044] FIG. 7 is a perspective view of the tablet case 63.

[0045] In this embodiment, the tablet case 63 has one side wall 80 and an open side on the opposite side. In this embodiment, the outer wall of the softener case 61 functions as the other side wall of the tablet case 63.

[0046] 7, the side wall 80 has a mesh 82 penetrating in the thickness direction (width direction K) of the side wall 80. The dissolved tablet J flows out of the mesh 82 together with the water and is supplied to the washing tub 4.

[0047] A peripheral wall 81 is provided on one surface of the side wall 80 so as to protrude in the width direction K (short direction). The peripheral wall 81 protrudes from the outer periphery of the side wall 80 and forms the front, bottom and back surfaces of the tablet case 63. The peripheral wall 81, together with the side wall 80, guides the tablets J inserted into the insertion port 63a to the storage space K10 on the rear side L2 and stores them therein. The storage space K10 is a space that stores the tablets J when water is being supplied.

[0048] The side wall 80 further has a protruding portion 88 protruding in the width direction K. The protruding portion 88 stably holds the tablet J in the storage space K10. Thus, the storage space K10 is defined by the peripheral wall 81 and the protruding portion 88.

[0049] The water supply nozzles 12 and 13 of the flow path member 11 are formed above the storage space K10. The storage space K10 is provided directly below the water supply nozzles 12 and 13. When a tablet J is placed in the storage space K10, the tablet J is dissolved by water supplied from the water supply nozzles 12 and 13.

[0050] As shown in Figures 8A and 8B, tablet J has a disk shape and a diameter D0 and a thickness T0. Figure 8A shows a tablet J placed vertically with its thickness direction perpendicular to the input direction A2. Figure 8B shows a tablet J placed horizontally with its thickness direction parallel to the input direction A2. The vertical position is a position in which the vertical dimension is greater than the dimension in the short direction (for example, thickness direction) of tablet J in a horizontal cross section. In the embodiment, tablet J is placed into tablet case 63 in the vertical position.

[0051] Here, the supply of water to the tablet J will be described.

[0052] FIG. 9 is a top view of the detergent supply unit 5 with the lid 50a removed. As shown in FIG. 9, the three water supply valves 10a, 10b, and 10c (FIG. 3) of the water supply member 10 are connected to paths F1, F2, and F3 of the flow path member 11, respectively. The paths F1, F2, and F3 are formed independently of one another. The path F1 connected to the water supply valve 10a forms a path for supplying water to the detergent case 60 and the powder detergent case 62. The path F2 connected to the water supply valve 10b forms a path for supplying water to the fabric softener case 61 and the tablet case 63. The path F3 connected to the water supply valve 10c forms a path for supplying water to the automatic dispensing unit 7. By supplying water to multiple cases through a single path, the number of water supply valves in the water supply member 10 can be reduced, simplifying the configuration.

[0053] Path F2 forms openings 14 and 15 facing tablet case 63 and multiple openings 16 facing fabric softener case 61. When water supply valve 10b is opened and communicates with path F2, water flows into tablet case 63 through openings 14 and 15 (see arrow B). On the other hand, water that exceeds openings 14 and 15 then flows into fabric softener case 61 through opening 16.

[0054] Fig. 10 is a cross-sectional view of the detergent supply unit 5. As shown in Fig. 10, a water supply nozzle 12 extending downward from an opening 14 and a water supply nozzle 13 extending downward from an opening 15 are provided at the top of the tablet case 63. The water supply nozzles 12 and 13 are arranged side by side in the front-rear direction L and above the storage space K10. The water supply nozzles 12 and 13 are cylindrical members, and water that flows into the openings 14 and 15 is discharged into the inside of the tablet case 63 through the water supply nozzles 12 and 13.

[0055] Fig. 11 is a schematic cross-sectional view of the tablet case 63 as viewed from the front-rear direction L. As shown in Fig. 11, water is discharged from the water supply nozzle 12 obliquely downward toward the side wall 80 of the tablet case 63 (arrow W1). Furthermore, water is discharged from the water supply nozzle 13 obliquely downward in the opposite direction toward the outer wall of the fabric softener case 61 on the opposite side (arrow W2).

[0056] The water hits point P1 on the side wall 80 and point P2 on the outer wall 89 of the softener case 61, and flows downward along the wall surface. Points P1 and P2 are above the apex of the tablet J and are located on the mesh 82 above the storage space K10. After the collision, the water flows downward along the wall surface, hits the side of the tablet J, and is absorbed by the tablet J. Because the water hits the side of the tablet J indirectly after hitting the side of the tablet J once, the force and flow rate of the water can be reduced compared to when the water hits the tablet J directly from the water supply nozzles 12, 13.

[0057] [Operation] Next, the operation of the washing machine 1 when executing the sterilization course will be described with reference to Figs. 12A to 15. Figs. 12A to 12G are sequence diagrams of the sterilization course or parts thereof. Fig. 13 is a diagram showing changes in water level during the sterilization course. Fig. 14 is a diagram showing the operation of the water supply valves 10a, 10b and the drain valve 9 during the sterilization course. Fig. 15 is a diagram showing the water level in the washing tub 4.

[0058] The sterilization course refers to a washing course carried out to remove bacteria attached to clothes and towels. One tablet J is used in one sterilization course. After the sterilization course is completed, it is expected that the tablet J will not remain in the tablet case 63 in the same shape as before it was inserted. Therefore, the user inserts new tablets J into the tablet case 63 before the next sterilization course.

[0059] As shown in Fig. 12A, in the sterilization course, the control unit C executes the washing process, the first rinsing process, the second rinsing process, and the spin-drying process in that order. In the washing process, detergent is supplied to the washing tub 4, and in the rinsing process, other liquid agents, tablets, etc. are supplied to the washing tub 4. In this embodiment, the tablets J are supplied to the washing tub 4 in the first rinsing process, i.e., the process immediately before the final rinsing process. If fabric softener is also supplied, the fabric softener is supplied to the washing tub 4 in the second rinsing process, i.e., the final rinsing process.

[0060] First, as a preliminary preparation, the user puts detergent and one tablet J for one sterilization course into the manual dosing unit 6. The detergent is put into the detergent case 60 through the dosing port 65a. The tablet J is put into the dosing port 63a in a vertical position. When using fabric softener, the user checks that fabric softener is stored in the tank 71 of the automatic dosing unit 7, and refills the tank 71 with fabric softener if the remaining amount is low.

[0061] Detergent may also be automatically dispensed by the automatic dispensing unit 7. When detergent is automatically dispensed, the user checks that detergent is stored in the tank 70 of the automatic dispensing unit 7, and refills the tank 70 with detergent if the remaining amount is low.

[0062] <Washing process> First, as shown in Figures 12B, 13 and 14, the control unit C determines the amount of water to be supplied Q1 in the washing process (S10). Specifically, the control unit C obtains the weight of the laundry in the washing tub 4 detected by the weight sensor 26, and determines the amount of water to be supplied Q1 according to the weight.

[0063] Next, the control unit C opens the water supply valve 10a to supply a predetermined amount of water to the path F1 (S11). The water flows into the detergent case 60 through the path F1 and is supplied to the washing tub 4 together with the detergent contained in the detergent case 60.

[0064] Next, the control unit C determines whether the water level in the washing tub 4 is higher than the washing water level Y1 corresponding to the water supply amount Q1 (S12). Specifically, the control unit C obtains the water level detected by the water level sensor 25 and compares the water level with the washing water level Y1 to make the determination.

[0065] If the water level in the washing tub 4 is lower than the washing water level Y1 (No in S12), the process returns to step S11.

[0066] If the water level in the washing tub 4 is higher than the wash water level Y1 (Yes in S12), the control unit C closes the water supply valve 10a (S13).

[0067] Instead of executing step S12, the control unit C may determine the water supply time T1 according to the water supply amount Q1, open the water supply valve 10a, and continue supplying water until the water supply time T1 has elapsed.

[0068] Next, the control unit C operates the agitation mechanism 8 of the washing tub 4 to wash and agitate the laundry (S14). Specifically, the control unit C causes the agitation mechanism 8 to perform a reversing operation to perform the washing and agitation. The washing and agitation continues for a predetermined time. The washing and agitation may continue until a predetermined number of reversals is achieved. Therefore, in the washing process, detergent is supplied to the washing tub 4 by supplying water and agitating, and the laundry can be washed.

[0069] During the washing and agitation, the water supply valve 10a may be opened to supply additional water.

[0070] <First rinsing process: Preparation> Subsequently, as shown in FIGS. 12C, 13, and 14, the control unit C executes preparation for the first rinsing step (S15 to S17).

[0071] First, the control unit C opens the drain valve 9 to drain a predetermined amount of water and detergent (S15).

[0072] Next, the control unit C determines whether the water level in the washing tub 4 is lower than the minimum water level Y0 (S16). Specifically, the control unit C obtains the water level detected by the water level sensor 25 and makes a determination by comparing the water level with the minimum water level Y0. As shown in FIG. 15, the minimum water level Y0 is a water level that is 10% or less of the maximum water level in the washing tub 4. Alternatively, the water level when no water is contained in the washing tub 4 may be set as the minimum water level Y0.

[0073] If the water level in the washing tub 4 is higher than the lowest water level Y0 (No in S16), the process returns to step S15.

[0074] If the water level in the washing tub 4 is lower than the minimum water level Y0 (Yes in S16), the control unit C closes the drain valve 9 (S17). Here, the control unit C may also perform intermediate spin-drying.

[0075] <First rinse step: Detergent rinsing step> 12D, 13, and 14, the control unit C executes the detergent rinsing steps (S20 to S27) of the first rinsing process. The detergent rinsing steps are executed to rinse the detergent that was put into the washing tub 4 in the washing process from the laundry.

[0076] First, control unit C opens water supply valve 10a to supply a predetermined amount of water to path F1 (S20). Water is supplied to washing tub 4 through path F1 and detergent case 60. Since the detergent put into detergent case 60 in advance is used in the washing process, in step S20, water is supplied to washing tub 4 through empty detergent case 60.

[0077] Next, control unit C determines whether the detergent rinse water level in washing tub 4 is higher than detergent rinse water level Y2 (S21). Specifically, control unit C obtains the water level detected by water level sensor 25 and makes the determination by comparing the water level with detergent rinse water level Y2. As shown in FIG. 15, detergent rinse water level Y2 is the water level assumed to be necessary for the laundry to be immersed in water. Control unit C may obtain the weight of the laundry in washing tub 4 detected by weight sensor 26 and determine detergent rinse water level Y2 according to the weight. For example, detergent rinse water level Y2 is the water level at which the liquor ratio becomes 10 L / kg according to the weight of the laundry obtained by control unit C.

[0078] If the water level in the washing tub 4 is lower than the detergent rinsing water level Y2 (No in S21), the process returns to step S20.

[0079] If the water level in the washing tub 4 is higher than the detergent rinsing water level Y2 (Yes in S21), the control unit C closes the water supply valve 10a (S22). Therefore, the washing tub 4 contains water equal to or higher than the detergent rinsing water level Y2.

[0080] Next, the control unit C opens the water supply valve 10b to supply a small amount of water to the path F2 (hereinafter referred to as the preliminary water supply step S23). This operation moistens the tablets J, making them more likely to dissolve. The water flows into the tablet case 63 through the path F2 and indirectly hits the tablets J as shown in FIG. 11. The small amount of water supply means an amount of water that is sufficient to moisten the surfaces of the tablets J, but is not enough to dissolve the tablets J and allow them to flow out of the tablet case 63.

[0081] Here, the amount of water supplied in the preliminary water supply step S23 is less than the amount of water supplied in the subsequent main water supply step. In the preliminary water supply step S23, the small amount of water supplied from water supply valve 10b may be 400 mL to 2500 mL, preferably 400 mL to 1250 mL. The flow rate of water supplied by water supply valve 10b may be 5 L / min to 15 L / min. Approximately 15% of the water supplied from water supply valve 10b is allocated to tablet case 63; for example, 50 mL to 200 mL of water flows into tablet case 63. For example, if water is supplied at 12 L / min for 5 seconds and 1000 mL of water is supplied from water supply valve 10b, 140 mL of water will flow into tablet case 63. The water supply time may be less than 10 seconds, preferably approximately 5 seconds.

[0082] By performing the preliminary water supply step S23 when the water level in the washing tub 4 is higher than the detergent rinse water level Y2, it is possible to prevent the tablets J from adhering to the laundry even if the tablets J dissolve and flow into the washing tub 4. This makes it possible to prevent the color of the laundry from fading.

[0083] Next, the control unit C closes the water supply valve 10b and starts a standby time (S24). During the standby time, water supply from the water supply valve 10b to the path F2 is stopped. For example, the standby time is 20 seconds or more. Meanwhile, during the standby time, other operations such as water supply from the water supply valve 10a, drainage, and stirring are performed.

[0084] By providing a waiting time, time can be ensured for the tablets J moistened in the preliminary water supply step S23 to foam. Also, time can be ensured for the water preliminarily supplied to penetrate further into the interior of the tablets J from the surface. The foamed tablets J or the tablets J into which water has penetrated are more easily dissolved in water. By performing the main water supply step on easily soluble tablets J, the tablets J can be more easily dissolved compared to when the main water supply step is performed without performing the preliminary water supply step S23.

[0085] Next, the control unit C opens the drain valve 9 to drain a predetermined amount of water and detergent (S25).

[0086] Next, the control unit C determines whether the water level in the washing tub 4 is lower than the minimum water level Y0 (S26). Specifically, the control unit C obtains the water level detected by the water level sensor 25 and compares the water level with the minimum water level Y0 to make the determination.

[0087] If the water level in the washing tub 4 is higher than the lowest water level Y0 (No in S26), the process returns to step S25.

[0088] If the water level in the washing tub 4 is lower than the minimum water level Y0 (Yes in S26), the control unit C closes the drain valve 9 (S27) to end the detergent rinsing step. Therefore, in the detergent rinsing step, the detergent can be more reliably rinsed off from the laundry and the tablets J can be moistened to make them more easily dissolved.

[0089] <First rinse process: sterilization step> 12E, 13, and 14, the control unit C executes the sterilization step (S30 to S42) of the first rinsing process. The sterilization step is executed to supply the tablets J placed in the tablet case 63 to the washing tub 4 and sterilize the laundry.

[0090] First, the control unit C opens the water supply valve 10a to supply a predetermined amount of water to the path F1 (S30). The water is supplied to the washing tub 4 through the path F1 and the empty detergent case 60.

[0091] Next, the control unit C determines whether the water level is higher than the pre-sterilization water level Y3 in the washing tub 4 (S31). Specifically, the control unit C obtains the water level detected by the water level sensor 25 and makes the determination by comparing the water level with the pre-sterilization water level Y3. The pre-sterilization water level Y3 is equal to or higher than the water level assumed to be necessary for the laundry to be immersed in water. The pre-sterilization water level Y3 is a water level at which the liquor ratio is 10 L / kg or higher, according to the laundry weight obtained by the control unit C. In the embodiment, the pre-sterilization water level Y3 is higher than the wash water level Y1 and the detergent rinsing water level Y2. Note that the pre-sterilization water level Y3 may be equal to the wash water level Y1 or the detergent rinsing water level Y2.

[0092] If the water level in the washing tub 4 is lower than the pre-sterilization water level Y3 (No in S31), the process returns to step S30.

[0093] If the water level in the washing tub 4 is higher than the pre-sterilization water level Y3 (Yes in S31), the control unit C closes the water supply valve 10a (S32).

[0094] Next, the control unit C determines whether or not the waiting time has elapsed (S33).

[0095] If the waiting time has not elapsed (No in S33), step S33 is executed again after a predetermined time, for example, 5 seconds, has elapsed.

[0096] If the standby time has elapsed (Yes in S33), control unit C executes main water supply step S34. In main water supply step S34, control unit C opens water supply valve 10b while keeping water supply valve 10a closed to supply water to path F2. The water flows into tablet case 63 through path F2 and indirectly hits tablet J as shown in FIG. 11. Since the amount of water supplied is greater than in preliminary water supply step S23, tablet J is dissolved. The dissolved tablet J is supplied to washing tub 4 together with water through mesh 82.

[0097] The amount of water supplied in the main water supply step S34 may be 30 L, or may be supplied for 120 seconds or more, for example, 30 times the amount of water supplied in the preliminary water supply step S23. In this embodiment, the flow rate of water supplied by opening the water supply valve 10b is smaller than the flow rate of water supplied by opening the water supply valve 10a. This configuration makes it possible to extend the water supply time for a predetermined amount of water to be supplied. Therefore, the time that the water hits the tablets J can be extended, making it easier to dissolve the tablets J. Note that the flow rate of water supplied by opening the water supply valve 10b may be greater than the flow rate of water supplied by opening the water supply valve 10a.

[0098] In the main water supply step S34, the control unit C operates the stirring mechanism 8 of the washing tub 4 to further perform the main water supply stirring for the laundry. Specifically, the control unit C causes the stirring mechanism 8 to perform a reverse operation to perform the main water supply stirring. The control unit C continues the main water supply stirring for a predetermined time even after the main water supply step S34 is completed. This operation allows the tablets J to act evenly on the laundry, providing a sterilizing effect over a wide area.

[0099] Next, the control unit C determines whether the water level is higher than the sterilization water level Y4 in the washing tub 4 (S35). Specifically, the control unit C obtains the water level detected by the water level sensor 25 and makes a determination by comparing the water level with the sterilization water level Y4. As shown in FIG. 15, the sterilization water level Y4 is higher than the wash water level Y1, the detergent rinse water level Y2, and the pre-sterilization water level Y3. This operation causes the dissolved substance of tablet J to float in the water supplied to the washing tub 4, thereby preventing the dissolved substance of tablet J from adhering to the laundry. By preventing the dissolved substance of tablet J from adhering to the laundry for a long period of time, damage and discoloration of the laundry can be prevented. Furthermore, by increasing the amount of water relative to the dissolved substance of tablet J in the washing tub 4, the tablet J becomes more easily dissolved.

[0100] If the water level in the washing tub 4 is lower than the sterilization water level Y4 (No in S35), the control unit C performs a small amount of additional water supply through the water supply valve 10b and executes step S35 again. The small amount of additional water supply is, for example, 0.3 L of water.

[0101] If the water level in the washing tub 4 is higher than the sterilizing water level Y4 (Yes in S35), the control unit C closes the water supply valve 10b (S36).

[0102] Next, the control unit C determines whether the water supply conditions are conditions that make it difficult for the tablets J to dissolve, and if the conditions are conditions that make it difficult for the tablets J to dissolve, executes additional steps (S37 to S42) after the main water supply step S34. Conditions that make it difficult for the tablets J to dissolve include when the water supply flow rate is high and when the water supply temperature is low.

[0103] Therefore, first, the control unit C determines the flow rate of water to be supplied through the water supply valve 10b (S37). Specifically, the control unit C calculates the water supply flow rate by dividing the increase in water level detected by the water level sensor 25 by the time it took for the water level to increase.

[0104] Next, the control unit C determines whether the calculated water supply flow rate is greater than a predetermined flow rate (S38).

[0105] If the water supply flow rate is greater than the predetermined flow rate (Yes in S38), control unit C executes additional water supply to tablet case 63 (S39). Specifically, control unit C opens drain valve 9 to drain a small amount of water, then closes drain valve 9 and opens water supply valve 10b to supply a small amount of water to tablet case 63. The small amount of additional water supply is, for example, 5 L of water. This operation can prevent the water level in washing tub 4 from rising excessively and prevent tablets J from remaining undissolved in tablet case 63.

[0106] If the water supply flow rate is smaller than the predetermined flow rate (No in S38), the process proceeds to step S40.

[0107] Next, the control unit C determines the temperature of the water to be supplied to the washing machine 1 (S40). Specifically, the control unit C acquires the temperature of the water supply detected by the water temperature sensor 27.

[0108] Next, the control unit C determines whether the supply water temperature is lower than a predetermined water temperature (S41). The predetermined water temperature is, for example, 10°C.

[0109] If the supply water temperature is lower than 10°C (Yes in S41), the control unit C operates the agitation mechanism 8 of the washing tub 4 while the heater 28 is operating to perform additional agitation of the laundry (S42). Specifically, while the heater 28 is performing heating, the control unit C causes the agitation mechanism 8 to perform a reversing operation to perform additional agitation.

[0110] Furthermore, if the water temperature is lower than 10°C (Yes in S41) and the water flow rate is lower than a predetermined flow rate (No in S38), the control unit C may execute additional water supply to the tablet case 63 (S39).

[0111] If the supply water temperature is higher than 10°C (No in S41), the control unit C ends the sterilization step. Therefore, in the sterilization step, the tablets J are dissolved by supplying water and supplied to the washing tub 4, and the laundry can be sterilized while preventing the tablets J that are not completely dissolved in the washing tub 4 from adhering to the laundry.

[0112] <First rinsing process: tablet rinsing step> 12F, 13, and 14, the control unit C executes the tablet rinsing step (S50 to S53) of the first rinsing process. The tablet rinsing step is executed to rinse the tablets J that were put into the washing tub 4 in the sterilization step.

[0113] The control unit C opens the drain valve 9 to drain a predetermined amount of water and dissolved tablets J (S50).

[0114] Next, the control unit C determines whether the water level in the washing tub 4 is lower than the tablet rinsing water level Y5 (S51). The tablet rinsing water level Y5 is higher than the lowest water level Y0.

[0115] If the water level in the washing tub 4 is higher than the tablet rinsing water level Y5 (No in S51), the process returns to step S50.

[0116] If the water level in the washing tub 4 is lower than the tablet rinse water level Y5 (Yes in S51), the control unit C closes the drain valve 9 (S52). In this state, it is assumed that a certain amount of water equal to or higher than the minimum water level Y0 is held in the washing tub 4.

[0117] Next, the control unit C opens the water supply valve 10b to supply a predetermined amount of water to the path F2, and closes the water supply valve 10b (S53). Because the water is supplied to the washing tub 4, the ingredients of the tablets J remaining in the laundry such as clothes can be rinsed away. Furthermore, because the water is supplied through the path F2, the water flows into the tablet case 63, and the remaining tablets J can be further washed out.

[0118] <Second rinsing process> 12G, 13, and 14, in the second rinsing step, the control unit C opens the drain valve 9 to drain a predetermined amount of water (S54). Here, the control unit C may also perform intermediate spin-drying.

[0119] Next, the control unit C determines whether the water level in the washing tub 4 is lower than the lowest water level Y0 (S55).

[0120] If the water level in the washing tub 4 is higher than the lowest water level Y0 (No in S55), the process returns to step S54.

[0121] If the water level in the washing tub 4 is lower than the minimum water level Y0 (Yes in S55), the control unit C closes the drain valve 9 (S56) and ends the tablet rinsing step. Therefore, in the tablet rinsing step, the tablets J can be more reliably rinsed out of the laundry, and the water containing the tablets J can be discharged from the washing tub 4.

[0122] Next, the control unit C intermittently opens the water supply valve 10b multiple times to supply water to the path F2 (S60). Specifically, the control unit C repeatedly opens and closes the water supply valve 10b at regular intervals over a certain period of time to supply water to the path F2. This operation causes water to intermittently flow into the tablet cases 63 through the path F2, and the fluctuation in the flow rate of the water inflow can promote the cleaning of the tablet cases 63.

[0123] In parallel, the control unit C executes the supply of fabric softener. The supply of fabric softener is performed by the automatic supply unit 7, not the manual supply unit 6. Because the manually supplied fabric softener case 61 shares path F2 with the tablet case 63, supplying fabric softener using the manual supply unit 6 is difficult because it is difficult to supply the fabric softener and the tablets separately, and there is a risk of the fabric softener and tablets J mixing. Mixing the fabric softener and tablets J makes it difficult for the tablets to achieve their desired effect. On the other hand, if the fabric softener and tablets J can be separated, tablets J can be supplied to the washing tub 4 in the first rinse step, and fabric softener can be supplied to the washing tub 4 in the final rinse step (i.e., the second rinse step). Since the laundry can be rinsed in the second rinse step after the supply of tablets J in the first rinse step, adhesion of tablets J to the laundry can be further suppressed. Since the spin cycle can be started immediately after supplying fabric softener to the washing tub 4, the ingredients and fragrance attached to the laundry are maintained compared to when a rinse cycle is added after supply. Therefore, the control unit C operates the automatic dispenser unit 7 to supply fabric softener.

[0124] Next, the control unit C determines whether the water level in the washing tub 4 is higher than the final rinse water level Y6 (S61). The final rinse water level Y6 is lower than the sterilization water level Y4.

[0125] If the water level in the washing tub 4 is lower than the final rinse water level Y6 (No in S61), the control unit C supplies a small amount of additional water through the water supply valve 10b, and executes step S61 again.

[0126] If the water level in the washing tub 4 is higher than the tablet rinsing water level Y5 (Yes in S61), the control unit C closes the water supply valve 10b (S62).

[0127] Next, the control unit C activates the agitation mechanism 8 of the washing tub 4 to agitate the laundry (S63).

[0128] <Dehydration process> Subsequently, in the spin-drying step, the water in the washing tub 4 is drained and the laundry is spin-dried (S70). After that, the control section C ends the sterilization course.

[0129] [summary] The above explanations are summarized to describe the features of the present disclosure.

[0130] The washing machine 1 according to the embodiment has a tablet case 63 for manually adding sterilizing tablets J, and a detergent case 60 and a fabric softener case 61 for manually adding liquid agents.

[0131] Since Tablet J is a solid processing agent for disinfection, if it mixes with other laundry agents in the washing tub 4, the disinfecting performance of Tablet J may be reduced due to mutual chemical reactions. Therefore, it is preferable to supply Tablet J and other laundry agents at different times. In the present disclosure, by supplying the detergent to the washing tub 4 in the wash step, Tablet J in the first rinse step, and fabric softener in the second rinse step, it is possible to prevent the laundry agents from mixing and adversely affecting each other.

[0132] Furthermore, by carrying out the tablet rinsing step and the second rinsing step after supplying the tablets J in the first rinsing step, it is possible to prevent the tablets J from adhering to the laundry for a long period of time. Therefore, it is possible to prevent damage to the laundry or discoloration of the laundry due to the chemical action of the tablets J.

[0133] [effect] The washing machine 1 according to the embodiment can achieve the following effects.

[0134] As described above, washing machine 1 of this embodiment is configured to be able to accept water-soluble, single-use tablets J (solid agents). Washing machine 1 includes washing tub 4, detergent case 60, tablet case 63 (solid agent case), water supply valve 10a (first water supply valve), water supply valve 10b (second water supply valve), and control unit C. Washing tub 4 is rotatably provided within housing 2. Detergent case 60 contains detergent to be supplied to washing tub 4. Tablet case 63 contains tablets J to be supplied to washing tub 4. Water supply valve 10a supplies water to detergent case 60. Water supply valve 10b supplies water to tablet case 63. Control unit C controls water supply valve 10a and water supply valve 10b. The control unit C executes a main water supply step S34 in which the water supply valve 10a is opened and the water supply valve 10b is closed in the washing step, and the water supply valve 10b is opened in the rinsing step after the washing step to supply water to the tablets J.

[0135] With this configuration, water supply to the detergent case 60 and water supply to the tablet case 63 can be performed in different processes. Therefore, the detergent and dissolved tablets J are supplied to the washing tub 4 at different times. Therefore, mixing of the detergent and tablets J can be prevented, thereby enhancing the effect of the tablets J.

[0136] In addition, in the washing machine 1 of this embodiment, the rinsing process includes at least a first rinsing process and a second rinsing process that is performed after the first rinsing process, and the control unit C opens the water supply valve 10b in the first rinsing process.

[0137] With this configuration, the tablets J are supplied to the washing tub 4 in the first rinsing step. By subsequently performing the second rinsing step, the tablet ingredients remaining in the laundry can be rinsed away in the second rinsing step. By rinsing the tablet ingredients more reliably, discoloration of the laundry can be suppressed.

[0138] Furthermore, in the washing machine 1 of this embodiment, the control unit C opens the water supply valve 10a before opening the water supply valve 10b to supply water to the washing tub 4 up to the pre-sterilization water level Y3 (predetermined amount) or more.

[0139] With this configuration, the tablets J can be supplied with water at the pre-sterilization water level Y3 in the washing tub 4. Therefore, the concentration of the tablets J in the washing tub 4 can be kept within an appropriate range, and discoloration of the laundry caused by the tablet components coming into direct contact with the laundry can be prevented.

[0140] In addition, in the washing machine 1 of this embodiment, the predetermined amount is the amount at which the water level in the washing tub 4 is a water level at which the laundry contained in the washing tub 4 is submerged, a water level at which the liquor ratio is 10 L / kg or more, or a water level at the same level as in the washing process (washing water level Y1).

[0141] This configuration can prevent the tablet ingredients from coming into direct contact with the laundry and causing discoloration of the laundry.

[0142] In addition, the washing machine 1 of this embodiment has an agitation mechanism 8 that agitates the laundry contained in the washing tub 4, and the control unit C opens the water supply valve 10b while driving the agitation mechanism 8 to perform the main water supply agitation (first agitation).

[0143] With this configuration, the dissolved tablet J including its fragments can be dispersed and diluted throughout the washing tub 4 without remaining on the laundry for a long time, thereby preventing discoloration of the laundry.

[0144] Moreover, washing machine 1 of the present embodiment further includes drain valve 9 for draining water from washing tub 4. Control unit C opens water supply valves 10a, 10b and drain valve 9 so that sterilizing water level Y4 (highest water level) in washing tub 4 in the first rinsing step (rinsing step including a main water supply step) becomes higher than washing water level Y1 (highest water level) in washing tub 4 in the washing step.

[0145] With this configuration, more water can be supplied to the washing tub 4 in the first rinse step in which the tablets J are supplied, while reducing the overall amount of water supplied. This ensures a large space between the laundry items in the water, preventing the tablets J from adhering to each other. In addition, the concentration of the components of the tablets J can be diluted, preventing discoloration.

[0146] Moreover, washing machine 1 of the present embodiment further includes drain valve 9 for draining water from washing tub 4. Control unit C opens water supply valves 10a, 10b and drain valve 9 so that intermediate sterilizing water level Y4 in the washing tub during the first rinsing step is greater than final rinsing water level Y6 (highest water level) in washing tub 4 during the second rinsing step.

[0147] With this configuration, more water can be supplied to the washing tub 4 in the first rinse step in which the tablets J are supplied, while reducing the overall amount of water supplied. This ensures a large space between the laundry items in the water, preventing the tablets J from adhering to each other. In addition, the concentration of the components of the tablets J can be diluted, preventing discoloration.

[0148] Moreover, washing machine 1 of the present embodiment has automatic dispensing unit 7 (fabric softener supply mechanism) that supplies fabric softener to washing tub 4. Control unit C drives automatic dispensing unit 7 to supply fabric softener to washing tub 4 in the second rinsing step.

[0149] With this configuration, the tablets J and the fabric softener can be separately put into the washing tub 4. Therefore, mixing of the tablets J and the fabric softener can be prevented, and the effect of the fabric softener on the laundry can be improved.

[0150] Furthermore, washing machine 1 of the present embodiment has water temperature sensor 27 (water temperature detection unit) that detects the water temperature of water supplied to washing tub 4. In the first rinsing process (rinsing process including a main water supply step), control unit C drives stirring mechanism 8 to further perform additional stirring (second stirring) in accordance with the water temperature detected by water temperature sensor 27.

[0151] With this configuration, even under conditions where the water temperature is low and the tablets J are difficult to dissolve, the fine particles of the tablets J supplied to the washing tub 4 can be dissolved by performing additional stirring.

[0152] Furthermore, washing machine 1 of the present embodiment has water temperature sensor 27 that detects the temperature of water supplied to washing tub 4, and heater 28 that heats the water supplied to washing tub 4. Control unit C performs heating by heater 28 in accordance with the water temperature detected by water temperature sensor 27 in the first rinsing process (rinsing process including the main water supply step).

[0153] With this configuration, even under conditions where the water temperature is low and the tablets J are difficult to dissolve, the fine particles of the tablets J supplied to the washing tub 4 can be dissolved by heating.

[0154] Furthermore, washing machine 1 of the present embodiment has water temperature sensor 27 that detects the temperature of water supplied to the washing tub. In the first rinsing process (the rinsing process including the main water supply step), control unit C opens water supply valve 10b to supply additional water according to the water temperature detected by water temperature sensor 27 (S39).

[0155] With this configuration, even under conditions where the water temperature is low and the tablets J do not easily dissolve, additional water supply is performed to increase the amount of water supplied to the tablet case 63, thereby dissolving the tablets J completely and reducing the amount of tablets J remaining undissolved in the tablet case 63. Therefore, it is possible to reduce the amount of broken pieces of the tablets J remaining in the tablet case 63 after the washing operation is completed.

[0156] Furthermore, washing machine 1 of the present embodiment has water level sensor 25 (flow rate detection unit) that detects the flow rate of water supplied to washing tub 4. In the first rinsing process (the rinsing process including the main water supply step), control unit C opens water supply valve 10b to supply additional water in accordance with the flow rate calculated based on the water level detected by water level sensor 25 (S39).

[0157] With this configuration, even under conditions where the flow rate is high and the tablets J do not easily dissolve, additional water supply is performed to increase the amount of water supplied to the tablet case 63, thereby completely dissolving the tablets J and reducing the amount of undissolved tablets J in the tablet case 63. Therefore, it is possible to reduce the amount of broken pieces of the tablets J remaining in the tablet case 63 after the washing operation is completed.

[0158] In addition, in the washing machine 1 of the present embodiment, the control unit C intermittently opens the water supply valve 10b multiple times in the second rinsing step (S60).

[0159] With this configuration, by repeatedly supplying water to the tablet case 63, the tablets J can be completely dissolved while reducing the amount of water supplied to the tablet case 63, and the remaining undissolved tablets J in the tablet case 63 can be reduced. Therefore, it is possible to prevent fragments of the tablets J from remaining in the tablet case 63 after the washing operation is completed.

[0160] Furthermore, in the washing machine 1 of this embodiment, the first rinsing step (the rinsing step including the main water supply step) includes a preliminary water supply step S23, a standby step S24, and a main water supply step S34. In the preliminary water supply step S23, water is supplied to the tablets J by the water supply valve 10b. In the standby step S24, after the preliminary water supply step S23, the water supply by the water supply valve 10b is stopped. In the main water supply step S34, after the standby step S24, water is supplied to the tablets J that have undergone the preliminary water supply step S23. The amount of water supplied in the preliminary water supply step S23 is less than the amount of water supplied in the main water supply step S34.

[0161] With this configuration, before the main water supply step S34 for dissolving the tablets J, the tablets J are moistened in the preliminary water supply step S23, and foam during the waiting time, making them more likely to dissolve. This makes it easier to completely dissolve the tablets J in the main water supply step S34. This makes it possible to prevent incompletely dissolved tablets J from remaining in the tablet case 63 after the main water supply step S34.

[0162] In the washing machine 1 of the present embodiment, the preliminary water supply step S23 is executed when the water level in the washing tub 4 is equal to or higher than the detergent rinsing water level Y2 (predetermined water level).

[0163] With this configuration, even if the tablets J dissolve and flow into the washing tub 4 in the preliminary water supply step S23, the fragments of the tablets J float in the water, preventing the fragments from adhering to the laundry. Therefore, color fading of the laundry can be prevented.

[0164] Moreover, washing machine 1 of the present embodiment further includes drain valve 9 for draining water from washing tub 4. The first rinsing process (the rinsing process including the main water supply step) includes a detergent rinsing step (S20 to S27), a preliminary water supply step S23, a standby step S24, and a main water supply step S34. The detergent rinsing step (S20 to S27) is performed before the main water supply step S34. In the preliminary water supply step S23, water is supplied to the tablets J by the water supply valve 10b. In the standby step S24, after the preliminary water supply step S23, the water supply by the water supply valve 10b is stopped. In the main water supply step S34, water is supplied to the tablets J that have undergone the preliminary water supply step S23 after the standby step S24. In the detergent rinsing step, the control unit C opens the water supply valve 10a to supply water (S20), and then opens the drain valve 9 to drain water (S25).

[0165] With this configuration, after the washing step, the detergent can be discharged from the washing tub 4 before the tablets J are supplied to the washing tub 4, i.e., before the main water supply step S34. Therefore, the detergent and the tablets J are prevented from mixing, thereby enhancing the effect of the tablets J.

[0166] The washing machine 1 of this embodiment also has a drain valve 9 that drains water from the washing tub 4. The first rinsing process (the rinsing process including the main water supply step) includes a preliminary water supply step S23, a waiting step S24, a main water supply step S34, and a tablet rinsing step (S50 to S53). In the preliminary water supply step S23, water is supplied to the tablets J by the water supply valve 10b. In the waiting step S24, after the preliminary water supply step S23, the water supply by the water supply valve 10b is stopped. In the main water supply step S34, after the waiting step S24, water is supplied to the tablets J that have undergone the preliminary water supply step S23. The tablet rinsing steps (S50 to S53) are executed after the main water supply step S34. After performing the tablet rinsing step, the control unit C opens the drain valve 9 to perform drainage (S54) so ​​that the lowest water level Y0 (water level) after drainage immediately after the tablet rinsing step is lower than the tablet rinsing water level Y5 (water level) in the tablet rinsing step.

[0167] With this configuration, after the main water supply step S34, the tablets J can be discharged from the washing tub 4. Also, by starting the water supply before the amount of water supplied in the main water supply step S34 is completely drained, the water in the washing tub 4 can be completely drained after the tablet rinsing step. Therefore, the tablets J can be more reliably discharged from the washing tub 4 while suppressing the amount of water supplied.

[0168] The washing method of this embodiment is a washing method using washing machine 1 into which water-soluble, single-use tablets J (solid agents) have been loaded. Washing machine 1 includes washing tub 4, detergent case 60, tablet case 63 (solid agent case), water supply valve 10a (first water supply valve), and water supply valve 10b (second water supply valve). Washing tub 4 is rotatably provided within housing 2. Detergent case 60 contains detergent to be supplied to washing tub 4. Tablet case 63 contains tablets J to be supplied to washing tub 4. Water supply valve 10a supplies water to detergent case 60. Water supply valve 10b supplies water to tablet case 63. The washing method includes opening water supply valve 10a and closing water supply valve 10b in a washing process. The washing method also includes performing a main water supply step S34 in which water supply valve 10b is opened to supply water to tablets J in a rinsing process following the washing process.

[0169] In this manner, water can be supplied to the detergent case 60 and water can be supplied to the tablet case 63 in different steps. Therefore, the detergent and the dissolved tablet J are supplied to the washing tub 4 at different times.

[0170] The present disclosure is not limited to the above-described embodiment, but can be embodied in various other forms.

[0171] Although the washing machine 1 is a vertical washing machine in the above example, the washing machine 1 is not limited to this. For example, the washing machine 1 may be a drum washing machine.

[0172] The washing machine 1 may also have a drying function. In this case, the washing machine 1 further includes a drying device that circulates drying air in the washing tub 4. The structure of the manual feeding unit 56 may be changed depending on the location of the drying device.

[0173] Although the example in which the tablet J is used as the solid agent has been described, the present invention is not limited to this.

[0174] Although an example in which tablet J contains sodium dichloroisocyanurate has been described, the present invention is not limited to this. Tablet J may also contain other dichloroisocyanurates, such as potassium dichloroisocyanurate. Furthermore, when adding tablets of a dichloroisocyanurate other than sodium dichloroisocyanurate, the tablets may be added to washing tub 4 at the same time as the fabric softener.

[0175] Although the example in which the automatic dispenser unit 7 is provided has been described, the present invention is not limited to this, and the detergent supply unit 5 may have only the manual dispenser unit 6.

[0176] Although the example in which a detergent is stored in the detergent case 60 has been described, the present invention is not limited to this. For example, the detergent case 60 may store a bleaching agent.

[0177] Although an example has been described in which the tablets J have a disk shape and are inserted into the tablet case 63 in a vertical position, the present invention is not limited to this. For example, the tablets J may have other shapes, and the insertion port 63a is designed to match the shape of the tablets J. Furthermore, the shape of the insertion port 63a may be changed so that the tablets J can be inserted into the tablet case 63 in a horizontal position.

[0178] In the embodiment, the mesh 82 has been described, but the present invention is not limited to this. Instead of the mesh 82, a drainage portion having a plurality of water passage holes or a water passage area may be formed.

[0179] Although an example in which tablet case 63 has a one-side open structure has been described, the present invention is not limited to this. For example, tablet case 63 may have a lid facing side wall 80, and the lid may be removable from tablet case 63. Meanwhile, the one-side open structure of the embodiment makes it easier to manufacture tablet case 63.

[0180] Although the water supply nozzles 12 and 13 have a straight portion in the above example, the water supply nozzles 12 and 13 may extend at an angle from the openings 14 and 15, respectively.

[0181] Although an example in which the path F2 is common to the softener case 61 and the tablet case 63 has been described, the present invention is not limited to this. The water supply path for the softener case 61 and the water supply path for the tablet case 63 may be provided independently.

[0182] Although the sterilization course has been described as an example of a course in which a water-soluble solid agent is dissolved and supplied to the washing tub 4, the course is not limited to this. The course is not limited to a course for sterilization, and may be a course for imparting various functionalities such as fragrance to the laundry.

[0183] Although the sterilization course includes two rinse steps in the above example, the present invention is not limited to this. The sterilization course may include three or more rinse steps. One or more rinse steps may be provided before the first rinse step. Alternatively, or in addition, one or more rinse steps may be provided between the first and second rinse steps. Furthermore, one or more rinse steps may be provided after the second rinse step. In this case, the water supply step S34 is performed in the rinse step before the rinse step immediately before the final rinse step, and the supply of fabric softener is performed in the final rinse step. This configuration makes it possible to more reliably wash away fragments of tablet J adhering to the laundry in the final rinse step and maintain the adhesion of the fabric softener ingredients.

[0184] Although the example in which water supply valve 10b is closed during the washing process has been described, the present invention is not limited to this. For example, water supply valve 10b may be opened during the washing process to perform preliminary water supply.

[0185] The predetermined amount of water supply or drainage in the sterilization course means any amount of water and may be different amounts. The amount of water supply or drainage may be determined at the time of manufacture, or may be determined based on the performance and installation environment of washing machine 1, or may be determined based on the weight of the laundry detected by weight sensor 26.

[0186] Although the example in which the agitation mechanism 8 is a pulsator has been described, the present invention is not limited to this. Washing machine 1 may have, as agitation mechanism 8, another mechanism capable of agitating the water in washing tub 4, such as a circulation pump or a rotation mechanism for water tub 3. Furthermore, agitation mechanism 8 may perform unidirectional rotation instead of a reversing operation. When washing machine 1 is a vertical washing machine, the reversing operation of agitation mechanism 8 can prevent the laundry from being unevenly distributed in washing tub 4.

[0187] Although the example in which washing machine 1 has heater 28 has been described, washing machine 1 is not limited to this. Instead of or in addition to heater 28, washing machine 1 may have a hot air unit that blows hot air into washing tub 4.

[0188] Although the example in which control unit C determines the water supply flow rate based on the water level measured by water level sensor 25 has been described, the present invention is not limited to this. For example, washing machine 1 may have a flow meter connected to water supply member 10 in addition to water level sensor 25.

[0189] Although the example in which the control unit C performs heating or additional stirring when the tablet J is difficult to dissolve has been described, the present invention is not limited to this. For example, the control unit C may perform heating or additional stirring even when the water temperature is high.

[0190] Although the example in which the control unit C executes the additional steps (S37 to S42) after the main water supply step S34 has been described, the present invention is not limited to this. The additional steps (S37 to S42) may be executed before the main water supply step S34.

[0191] The washing machine in the first aspect is a washing machine configured to be able to load water-soluble, disposable solid agents, and is equipped with a washing tub rotatably arranged within a housing, a detergent case that contains detergent to be supplied to the washing tub, a solid agent case that contains solid agents to be supplied to the washing tub, a first water supply valve that supplies water to the detergent case, a second water supply valve that supplies water to the solid agent case, and a control unit that controls the first water supply valve and the second water supply valve, and the control unit opens the first water supply valve and closes the second water supply valve during the washing process, and opens the second water supply valve during the rinsing process after the washing process to perform a main water supply step of supplying water to the solid agents.

[0192] As a washing machine in a second aspect, in the washing machine in the first aspect, the rinsing process includes at least a first rinsing process and a second rinsing process performed after the first rinsing process, and the control unit opens the second water supply valve in the first rinsing process.

[0193] As a washing machine according to a third aspect, in the washing machine according to the second aspect, the control unit opens the first water supply valve to supply a predetermined amount or more of water to the washing tub before opening the second water supply valve.

[0194] In the washing machine of the fourth aspect, in the washing machine of the third aspect, the predetermined amount is an amount that causes the water level in the washing tub to be submerged in the laundry stored in the washing tub, a water level at which the liquor ratio is 10 L / kg or more, or the same water level as in the washing process.

[0195] In a fifth aspect, the washing machine is a washing machine in any one of the first to fourth aspects, which has an agitation mechanism for agitating the laundry contained in the washing tub, and the control unit opens the second water supply valve while driving the agitation mechanism to perform the first agitation.

[0196] In a sixth aspect, the washing machine is a washing machine according to any one of the first to fifth aspects, further comprising a drain valve for draining water from the washing tub, and the control unit opens the first water supply valve, the second water supply valve, and the drain valve so that the highest water level in the washing tub during the rinsing process, which includes the water supply step, is greater than the highest water level in the washing tub during the washing process.

[0197] In a seventh aspect, the washing machine of the second aspect further includes a drain valve for draining water from the washing tub, and the control unit opens the first water supply valve, the second water supply valve, and the drain valve so that the highest water level in the washing tub during the first rinse step is greater than the highest water level in the washing tub during the second rinse step.

[0198] In the eighth aspect, the washing machine of the second aspect has a fabric softener supply mechanism that supplies fabric softener to the washing tub, and the control unit drives the fabric softener supply mechanism to supply fabric softener to the washing tub during the second rinsing process.

[0199] In a ninth aspect, the washing machine of the fifth aspect has a water temperature detection unit that detects the temperature of the water supplied to the washing tub, and the control unit drives the stirring mechanism to further perform second stirring in accordance with the water temperature detected by the water temperature detection unit during the rinsing process, which includes the main water supply step.

[0200] A washing machine in a tenth aspect is a washing machine in any one of the first to ninth aspects, which has a water temperature detection unit that detects the temperature of water supplied to the washing tub and a heater that heats the water supplied to the washing tub, and the control unit performs heating using the heater in accordance with the water temperature detected by the water temperature detection unit during the rinsing process, which includes the water supply step.

[0201] In an eleventh aspect, the washing machine is a washing machine in any one of the first to tenth aspects, which has a water temperature detection unit that detects the temperature of the water supplied to the washing tub, and the control unit opens the second water supply valve to supply additional water in accordance with the water temperature detected by the water temperature detection unit during the rinsing process, which includes this water supply step.

[0202] In a twelfth aspect, the washing machine is a washing machine in any one of the first to eleventh aspects, which has a flow rate detection unit that detects the flow rate of water supplied to the washing tub, and the control unit opens the second water supply valve to supply additional water in accordance with the flow rate detected by the flow rate detection unit during the rinsing process, which includes this water supply step.

[0203] In a thirteenth aspect of the washing machine, in the washing machine of the second aspect, the control unit intermittently opens the second water supply valve multiple times in the second rinsing step.

[0204] As a washing machine in the 14th aspect, in a washing machine in any of the first to 13th aspects, the rinsing process including the main water supply step includes a preliminary water supply step in which water is supplied to the solid agent by the second water supply valve, a waiting step in which water supply by the second water supply valve is stopped after the preliminary water supply step, and a main water supply step in which water is supplied to the solid agent that has undergone the preliminary water supply step after the waiting step, and the amount of water supplied in the preliminary water supply step is less than the amount of water supplied in the main water supply step.

[0205] In a washing machine according to a fifteenth aspect, in the washing machine according to the fourteenth aspect, the preliminary water-supply step is performed when the water level in the washing tub is equal to or higher than a predetermined water level.

[0206] In a 16th aspect, the washing machine is a washing machine in any one of the first to 13th aspects, further comprising a drain valve for draining water from the washing tub, and the rinsing process including the main water supply step includes a detergent rinsing step carried out before the main water supply step, a preliminary water supply step in which water is supplied to the solid agent by the second water supply valve, a waiting step in which water supply by the second water supply valve is stopped after the preliminary water supply step, and a main water supply step in which water is supplied to the solid agent that has undergone the preliminary water supply step after the waiting step, and the control unit opens the first water supply valve to supply water in the detergent rinsing step, and then opens the drain valve to drain water.

[0207] A washing machine in a 17th aspect is a washing machine in any one of the first to 13th aspects, further having a drain valve for draining water from the washing tub, and the rinsing process including the main water supply step includes a preliminary water supply step in which water is supplied to the solid tablets by the second water supply valve, a waiting step in which water supply by the second water supply valve is stopped after the preliminary water supply step, a main water supply step in which water is supplied to the solid tablets that have undergone the preliminary water supply step after the waiting step, and a tablet rinsing step that is performed after the main water supply step, and the control unit opens the drain valve to perform drainage after performing the tablet rinsing step so that the water level after drainage immediately after the tablet rinsing step is lower than the water level in the tablet rinsing step.

[0208] The washing method in the 18th aspect is a washing method using a washing machine into which a water-soluble, disposable solid agent has been added, the washing machine comprising a washing tub rotatably arranged within a housing, a detergent case for containing detergent to be supplied to the washing tub, a solid agent case for containing solid agents to be supplied to the washing tub, a first water supply valve for supplying water to the detergent case, and a second water supply valve for supplying water to the solid agent case, and includes opening the first water supply valve and closing the second water supply valve during the washing process, and performing a main water supply step of opening the second water supply valve and supplying water to the solid agents during the rinsing process after the washing process.

[0209] Although the present disclosure has been fully described in connection with the preferred embodiments with reference to the accompanying drawings, various changes and modifications will be apparent to those skilled in the art, and such changes and modifications are to be understood as included within the scope of the present invention as defined by the appended claims unless they depart therefrom. [Industrial Applicability]

[0210] The washing machine of the present disclosure can improve the functionality of the configuration for adding solid agents, and is therefore useful as a domestic washing machine, a commercial washing machine, or any type of washer-dryer (e.g., a domestic drum washing machine). [Explanation of symbols]

[0211] 1 washing machine 2. Case 3. Aquarium 4 Washing machine 5 Detergent supply unit 6 Manual feeding unit 7 Automatic feeding unit 10 Water supply member 11 Flow path member 12 Water supply nozzle 13 Water supply nozzle 50 unit case 60 Detergent Case 61 Fabric softener case 62 Powder detergent case 63 Pill Case 63a Inlet 65 Inlet material 66 Inlet part 80 side wall 81 Peripheral wall 82 mesh 88 Protrusion

Claims

1. A washing machine and a manual injection case having a storage portion for storing a single dose of the first treatment agent; an automatic dispensing unit having a tank for storing fabric softener and configured to automatically dispense a predetermined amount of fabric softener contained in the tank; a water supply member having a first water supply valve that supplies water to the storage section when opened, and a second water supply valve different from the first water supply valve that supplies water to the automatic dispensing unit when opened; a control unit that controls the operation, The control unit The washing process and a first rinsing process in which, after the washing process, the first water supply valve is opened and the first treatment agent contained in the containing section is supplied to the washing tub; a final rinsing step in which the second water supply valve is opened and the automatic supply unit supplies the fabric softener to the washing tub after the first rinsing step; Controls the first cycle of the washing machine.

2. The washing machine according to claim 1 , wherein the first treatment agent is a treatment agent different from a detergent and a fabric softener.

3. The washing machine according to claim 1 , wherein the first treatment agent contains a component that exhibits sterilizing performance.

4. The washing machine according to claim 1 , wherein the control unit controls the first course to execute a dehydration process of draining water from the washing tub and dehydrating the laundry after the final rinsing process.

5. The control unit In the first rinsing step, after the first water supply valve is opened to supply the first treatment agent to the washing tub, a draining operation is performed to drain the water in the washing tub; The washing machine according to claim 1 , wherein the automatic dispensing unit dispenses the fabric softener in the final rinsing step after the draining operation.

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