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 solid agent case 63 having a storage space K10 for storing the solid agent, and water supply parts 12, 13 that have a discharge opening for flowing out water and supply water into the solid agent case 63 through the discharge opening. The water supply parts 12, 13 pour water toward an internal wall surface 89 defining the storage space K10.SELECTED DRAWING: Figure 15A

Description

Technical Field

[0001] The present disclosure relates to a washing machine.

Background Art

[0002] For example, Patent Document 1 discloses a washing machine that uses silver crystals as a bactericide to treat laundry.

[0003] The washing machine described in Patent Document 1 has a silver crystal unit that houses silver crystals and a water injection device that supplies water to the silver crystal unit. By supplying water to the silver crystal unit, the water comes into contact with the silver crystals and becomes silver ion water, which is then introduced into the washing tub. The silver ion water exhibits a bactericidal effect on the laundry.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, from the perspective of the bactericidal performance against laundry, there is still room for improvement.

[0006] Therefore, an object of the present disclosure is to solve the above problems and provide a washing machine that improves the bactericidal performance against laundry.

Means for Solving the Problems

[0007] A washing machine according to one aspect of the present disclosure is configured to be able to accept a water-soluble, single-use solid agent, and comprises a washing tub rotatably provided within the casing, a solid agent case having a storage space for containing the solid agent, and a water supply unit having a discharge opening for discharging water and supplying water into the solid agent case through the discharge opening, wherein the water supply unit pours water toward an inner wall surface defining the storage space.

[0008] A washing machine according to one aspect of the present disclosure is configured to be able to accept a water-soluble, single-use solid agent, and comprises a washing tub rotatably mounted within a casing, a detergent case for containing detergent, a solid agent case for containing the solid agent, a first water supply valve for supplying water to the detergent case, a second water supply valve for supplying water to the solid agent case, and a control unit for controlling the first and second water supply valves and executing a first step, wherein the first step includes a preliminary water supply step in which water is supplied to the solid agent by the second water supply valve, a standby step in which water 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 by the second water supply valve after the standby step, wherein 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. [Effects of the Invention]

[0009] According to this disclosure, it is possible to provide a washing machine with improved antibacterial performance for laundry. [Brief explanation of the drawing]

[0010] [Figure 1] Perspective view of the washing machine according to Embodiment 1 of this disclosure [Figure 2] Perspective view of the laundry detergent supply unit [Figure 3] Perspective view of the laundry detergent supply unit [Figure 4] Perspective view of the manual feeding unit [Figure 5] Cross-sectional view of the manual feeding unit [Figure 6] Perspective view of the manual feeding unit [Figure 7] Perspective view of the input opening component [Figure 8]Perspective view of the inlet member [Figure 9A] Perspective view of the tablet case [Figure 9B] Perspective view of the tablet case [Figure 9C] Plan view of the tablet case [Figure 9D] Cross-sectional view of the tablet case [Figure 10A] Perspective view of the tablet [Figure 10B] Perspective view of the tablet [Figure 11] Top view of the detergent supply unit [Figure 12] Cross-sectional view of the detergent supply unit [Figure 13] Enlarged perspective view of the water supply nozzle [Figure 14A] Cross-sectional view of the water supply nozzle [Figure 14B] Cross-sectional view of the water supply nozzle [Figure 15A] Schematic cross-sectional view of the tablet case [Figure 15B] Partial cross-sectional view of the detergent supply unit [Figure 15C] Sequence diagram of the sterilization course [Figure 16] Perspective view of the washing machine according to Embodiment 2 of the present disclosure [Figure 17] Perspective view of the detergent supply unit [Figure 18] Perspective view of the detergent supply unit [Figure 19] Perspective view of the manual input unit [Figure 20] Perspective view of the manual input unit [Figure 21] Cross-sectional view of the manual input unit [Figure 22] Perspective view of the tablet case [Figure 23] Perspective view of the tablet case in the released state [Figure 24] Cross-sectional view of the tablet case [Figure 25] Cross-sectional view of the detergent supply unit

Embodiments for Carrying Out the Invention

[0011] (Knowledge and other information that formed the basis of this disclosure) At the time the inventors conceived this disclosure, a water-soluble solid agent containing sodium dichloroisocyanurate was known as a technology for disinfectants used in bathroom cleaning. Inspired by the technology for disinfectants used in bathroom cleaning, the inventors conceived of a washing machine that uses a single-use water-soluble solid agent to impart the solid agent's components to laundry. The inventors then discovered that in order to realize this concept, if water was poured directly onto the solid agent from above, the parts of the solid agent that were hit by the water would be eroded, forming grooves. The splashes of water generated in these grooves would then carry fragments of the solid agent, which could scatter around and remain as residue. For example, if fragments of the solid agent remain in the case containing the solid agent, the user may mistakenly believe that the disinfection operation is not functioning correctly. Furthermore, if the case is made of resin or the like, the residue of solid agent fragments in the case may damage the resin of the case. The subject matter of this disclosure was established in order to address these challenges.

[0012] (Embodiment 1) The washing machine 1 according to Embodiment 1 of this disclosure will be described below.

[0013] [Overall structure] Figure 1 is a perspective view showing a washing machine 1 according to Embodiment 1 of the present disclosure. As shown in Figure 1, the washing machine 1 comprises a housing 2, a water tank 3, a washing tub 4, a detergent supply unit 5, and a control unit C.

[0014] <Enclosure> The housing 2 is a component that forms the exterior of the washing machine 1. The top surface of the housing 2 is provided with an opening 20 and a door 21 that can be opened and closed to cover the opening 20.

[0015] <Aquarium> The water tank 3 is a roughly cylindrical component located inside the housing 2, with one end closed to hold laundry water. The water tank 3 may also be referred to as the outer tank.

[0016] <Washing machine drum> The washing tub 4 is a roughly cylindrical member that is rotatably mounted inside the water tank 3 and contains laundry such as clothes. The washing tub 4 has a number of through holes 40 that communicate with the water tank 3. The through holes 40 allow the movement of washing water and detergent between the water tank 3 and the washing tub 4. The washing tub 4 further has an opening 41 facing the opening 20 of the housing 2. Laundry is put into the washing tub 4 through the opening 41. The washing tub 4 may also be called a drum or inner tub.

[0017] <Laundry detergent supply unit> The laundry agent supply unit 5 is a unit that supplies laundry agents such as liquid agents, powder detergents, and solid agents to the washing tub 4. Supplying laundry agents means discharging them downwards towards the washing tub 4. Liquid agents are liquid agents used to wash laundry such as clothes. Liquid agents may include detergents, fabric softeners, and neutral detergents.

[0018] The laundry detergent supply unit 5 includes a manual dispensing unit 6 and an automatic dispensing unit 7.

[0019] <Department Head> The control unit C is a component that controls the operation of the washing machine 1. The control unit C may, for example, include a memory (not shown) that stores a program and a processing circuit (not shown) corresponding to a processor such as a CPU, and the processor may function as these elements by executing the program.

[0020] Next, the configuration of the laundry detergent supply unit 5 will be explained with reference to Figures 2 and 3. Figures 2 and 3 are perspective views of the laundry detergent supply unit 5.

[0021] As shown in Figure 2, the laundry detergent supply unit 5 comprises 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 (Figure 3).

[0022] As shown in Figure 3, the unit case 50 is a component 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 covered with a lid 50a.

[0023] The manual dispensing unit 6 is a mechanism that allows the user to manually add one dose of laundry detergent, such as liquid detergent, powder detergent, or solid detergent, each time the washing machine 1 is operated. The laundry detergent added to the manual dispensing unit 6 flows into the washing tub 4 in the amount added.

[0024] The laundry detergent for one load, to be dispensed into the manual dispensing unit 6, is contained in a plurality of cases 60, 61, 62, and 63 formed by the manual dispensing unit 6. In Embodiment 1, each of the cases 60, 61, 62, and 63 contains a single load of detergent, fabric softener, powder detergent, and a water-soluble solid agent (e.g., a tablet).

[0025] The automatic dispensing unit 7 is a mechanism that automatically dispenses a predetermined amount of liquid from a liquid storage tank into the washing tub 4. The automatic dispensing unit 7 dispenses the appropriate type and amount of liquid 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 contain liquids and are arranged in the width direction K (for example, the horizontal direction), and a pump (not shown) that sucks in and discharges the liquid. In Embodiment 1, tank 70 contains detergent and tank 71 contains fabric softener.

[0026] The water supply member 10 is a mechanism that supplies water to the laundry detergent supply unit 5 via the flow path member 11. The water supply member 10 consists 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 water supply valve 10a is opened, water is supplied to cases 60 and 62; when water supply valve 10b is opened, water is supplied to cases 61 and 63; and when 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.

[0027] The flow path member 11 is a component that guides the water supplied from the water supply valves 10a, 10b, and 10c to the destination. The flow path member 11 is installed above the cases 60, 61, 62, and 63 and is connected to the water supply valves 10a, 10b, and 10c. More specifically, the flow path member 11 forms multiple independent paths that communicate from the water supply valves 10a, 10b, and 10c to the destination.

[0028] The water supplied to cases 60, 61, 62, and 63 of the manual dispensing unit 6 flows into the washing tub 4 along with the laundry detergent contained within.

[0029] Next, the configuration of the manual input unit 6 will be explained in more detail with reference to Figures 3-6. Figure 4 is a perspective view of the manual input unit 6. Figure 5 is a cross-sectional view showing the manual input unit 6 with the case 63 and input port members 65 and 66 removed. Figure 6 is a perspective view showing the manual input unit 6 with the case 63 and input port members 65 and 66 removed.

[0030] As shown in Figure 3, the manual loading unit 6 comprises a main body 64. The main body 64 is a component held in the unit case 50 so as to be retractable in the front-rear direction L.

[0031] As shown in Figure 4, the main body 64 houses the input slot members 65 and 66 and the case 63 (hereinafter referred to as the tablet case 63). The input slot members 65 and 66 and the tablet case 63 are removably housed in the main body 64.

[0032] As shown in Figures 4 and 5, the main body 64 is provided with cases 60, 61, and 62 for storing laundry detergents, arranged in the width direction K. As described above, case 60 (hereinafter referred to as detergent case 60) stores detergent, case 61 (hereinafter referred to as fabric softener case 61) stores fabric softener, and case 62 (hereinafter referred to as powder detergent case 62) stores powder detergent. In the main body 64, the detergent case 60 and the powder detergent case 62 are adjacent to each other. On the other hand, 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.

[0033] As shown in Figure 5, the fabric softener case 61 has a storage space 78 for storing fabric softener and a liquid discharge channel 74. The liquid discharge channel 74 has a U-shape, extending upward from the suction port 74a, folding back at the top of the fabric softener case 61, and connecting to the bottom surface 78a of the storage space 78. The liquid discharge channel 74 draws up the fabric softener from the suction port 74a and discharges it from the opening 61a formed in the bottom surface 78a of the storage space 78.

[0034] The detergent case 60 has a storage space 77 for storing detergent and a liquid dispensing channel 73. The liquid dispensing channel 73 has a U-shape, similar to the liquid dispensing channel 74.

[0035] The input port member 65 is located in the storage space 77 and forms an input port 65a provided for dispensing detergent. The input port member 66 is located in the storage space 78 and forms an input port 66a provided for dispensing fabric softener.

[0036] More specifically, the inlet member 65 is positioned to cover the liquid discharge channel 73 of the detergent case 60, and the inlet member 66 is positioned to cover the liquid discharge channel 74 of the fabric softener case 61. When the inlet members 65 and 66 cover the liquid discharge channels 73 and 74, a channel is formed between the inlet members 65 and 66 and the liquid discharge channels 73 and 74. With this structure, when the liquid level in cases 60 and 61 exceeds a predetermined height, the water and liquid can exceed the peak of the liquid discharge channels 73 and 74. In other words, until the liquid level exceeds a predetermined height by opening the water supply valve 10a or water supply valve 10b and supplying water to case 60 or case 61, the detergent or fabric softener will not flow out of cases 60 and 61 and can be retained inside cases 60 and 61. Furthermore, even after closing the water supply valve 10a or 10b to stop the water supply, the liquid and water in case 60 or case 61 are discharged from opening 60a or opening 61a due to the siphon effect in the flow path between the inlet members 65, 66 and the liquid discharge flow paths 73, 74. This prevents water from remaining in case 60 or case 61.

[0037] On the other hand, the powder detergent case 62 does not have a component that forms an opening, and the entire top surface is open upwards.

[0038] The tablet case 63 is a component that contains a water-soluble solid agent used in one disinfection wash cycle. When water comes into contact with the solid agent, it dissolves, and the dissolved solid agent is supplied to the washing tub 4. The solid agent is a solid or hollow solid. For example, the solid agent is a solid formed from compressed powder. The solid agent may also be called a solid treatment agent. In Embodiment 1, tablet J will be described as an example of a solid agent.

[0039] Here, tablet J contains an ingredient that exhibits disinfectant properties. Tablet J contains a water-soluble ingredient and has a certain shape before water is added, but when water comes into contact with it, it breaks down into small fragments and dissolves in water.

[0040] Regarding the constituent materials of tablet J, tablet J may contain a component that generates hypochlorous acid. In Embodiment 1, tablet J contains sodium dichloroisocyanurate as a disinfectant component. Tablet J may further contain a component that reacts with water to produce foam.

[0041] Regarding the shape of the tablet J, the tablet J may have a shape that allows it to move to a predetermined position in the tablet case 63, for example, having an outer circumference shape or contour that allows it to roll and move. In Embodiment 1, the tablet J has a disc shape in which the diameter D0 is greater than the thickness T0 (Figures 10A and 10B).

[0042] 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. Alternatively, for example, the type of tablet J may be a type selected from a catalog or list stored in the control unit C.

[0043] The tablet case 63 has an input opening 63a on its front side L1 for inserting tablets J. When the tablet case 63 is placed on the main body 64, the input opening 63a is positioned between input openings 65a and 66a, which are aligned in the width direction K.

[0044] The tablet case 63 is fixed by hooking onto the wall of the main body 64 that defines the space 67. Specifically, the tablet case 63 has a hook portion 80a, a hook portion 81a, and a grip portion 81b that protrude outward from the tablet case 63, and the hook portion 80a, hook portion 81a, and grip portion 81b hook onto the main body 64.

[0045] As shown in Figure 6, the bottom surface 64a of the main body 64 is provided with openings 60a, 61a, 62a, and 67a at positions corresponding to the cases 60, 61, 62 and the space 67. When water is supplied from the water supply member 10 to the cases 60, 61, 62, and 63, the contained liquid flows out with the water from the respective openings 60a, 61a, 62a, and 67a towards the washing tub 4.

[0046] Figures 7 and 8 are perspective views of the input port member 65. In the following description, only the input port member 65 will be shown, but the input port member 66 has a similar structure. The input port member 66 has a guide portion 168 (Figure 4), similar to the guide portion 68 of the input port member 65.

[0047] As shown in Figures 7 and 8, the inlet member 65 has a guide portion 68, a guide portion 69, and an engaging portion 75. The guide portion 68 is a wall portion that defines the range of the inlet 65a and guides the liquid from the area around the inlet 65a to the inlet 65a. The guide portion 69 is a flow path member that extends downward from the inlet 65a and guides the liquid from the inlet 65a into the interior of the inlet member 65 (case 60). The engaging portion 75 is a flow path member that covers the liquid discharge flow path 73.

[0048] As shown in Figure 7, the guide portion 68 extends in a direction intersecting the direction of travel (arrow A1) of the tablet J as it attempts to pass through the input port 65a when the user mistakenly inserts the tablet J into the input port 65a. In Embodiment 1, for tablets J inserted in the vertical direction, the guide portion 68 extends along the horizontal direction.

[0049] The opening size of the input port 65a defined in the guide portion 68 is smaller than the outer dimensions of the tablet J. The opening size is the maximum dimension that crosses the input port 65a. More specifically, the length D1 of the diagonal of the input port 65a is smaller than the diameter D0 of the tablet J. Therefore, regardless of the orientation of the tablet J, it becomes difficult for the tablet J to pass through the input port 65a. In Embodiment 1, the input port 65a has a roughly square or rounded square shape. Therefore, if the tablet J is a disc, even if the dimensional difference between the length D1 and the diameter D0 is small, it becomes difficult for the tablet J to get stuck in the input port 65a, making it easier to retrieve the tablet J from the vicinity of the input port member 65.

[0050] The guide section 68, which defines the input opening 65a that makes it difficult for the tablet J to pass through, functions as a restricting section. In this specification, a restricting section is a member that prevents the tablet J from mistakenly reaching the washing tub 4. The restricting section is structured to obstruct the entry of the tablet J when it is placed in the wrong case (i.e., a case other than the tablet case 63) and tries to move to the back of the case, for example, to the storage space 77. The restricting section may be a narrowing of the passage, a projection that protrudes in a direction intersecting the direction in which the tablet J is trying to move, a mesh, etc. On the other hand, the restricting section is configured so as not to obstruct the passage of the liquid agent that is normally put into the case.

[0051] As shown in Figure 8, the guide section 69 guides the liquid agent introduced from the inlet 65a into the detergent case 60. One side of the guide section 69 is open, and the introduced liquid agent is guided along arrow A1. The guide section 69 has a flat surface 69a opposite to the inlet 65a. Even if some of the tablet J dissolves and becomes small enough to pass through the inlet 65a, the flat surface 69a catches the tablet J, preventing it from reaching the bottom of the storage space 77 and becoming difficult to remove.

[0052] Figures 9A and 9B are perspective views of the tablet case 63. Figure 9C is a plan view of the tablet case 63. Figure 9D is a cross-sectional view of the tablet case 63 along line AA in Figure 9C. Figures 10A and 10B are perspective views of the tablet J.

[0053] In Embodiment 1, the tablet case 63 has a one-sided open structure with one side wall 80 and the opposite side open.

[0054] As shown in Figure 9A, one surface of the side wall 80 is provided with a peripheral wall 81 and projections 87, 88, 83a, and 83b projecting in the width direction K (short side direction). The peripheral wall 81 projects from the outer periphery of the side wall 80 and forms the front, bottom, and back surfaces of the tablet case 63. The projections 87 and 88 are provided on the inside of the peripheral wall 81. The projections 83a and 83b are provided on the upper part of the side wall 80.

[0055] As shown in Figure 9B, a hook portion 80a is provided on the other side of the side wall 80. The hook portion 80a protrudes in the opposite direction to the peripheral wall 81 (outside the tablet case 63). By hooking the hook portion 80a onto the detergent case 60, the tablet case 63 is supported by the main body portion 64 (Figure 5).

[0056] As shown in Figure 9A, the top surface of the tablet case 63 and the surface facing the side wall 80 are open. In Embodiment 1, the outer wall 89 of the fabric softener case 61 (Figure 9D) functions as the other side wall of the tablet case 63.

[0057] The side wall 80 has a mesh 82 that penetrates the side wall 80 in the thickness direction (width direction K). The dissolved tablet J flows out through the mesh 82 along with water and is supplied to the washing tub 4.

[0058] The peripheral wall 81 has an inclined surface 84 aligned in the front-rear direction L, a vertical wall portion 85, and a bottom wall portion 86. The inclined surface 84 is a wall portion located below the input port 63a, inclined downward toward the rear side L2 relative to the horizontal. The inclined surface 84 guides the tablet J inserted into the input port 63a to the water supply position K1 toward the rear side L2 along the direction of gravity. The vertical wall portion 85 is a wall portion extending downward from the lower end of the inclined surface 84, forming a step between the inclined surface 84 and the bottom wall portion 86. The bottom wall portion 86 is a wall portion extending in the front-rear direction L from the lower end of the vertical wall portion 85. The bottom wall portion 86 defines the water supply position K1 at a position toward the rear side L2 away from the lower end of the vertical wall portion 85.

[0059] Here, the water supply position K1 is the position of the bottom wall portion 86 where the tablet J is placed during water supply. The water supply position K1 is the position that the tablet J is expected to reach after it is introduced.

[0060] The water supply position K1, together with the peripheral wall 81 and the protrusion 88, forms a storage space K10 for accommodating the tablet. The storage space K10 is the area where the tablet J exists when it is housed in the tablet case 63. The storage space K10 may be larger than the outer shape of the tablet J. In other words, the dimensions of the storage space K10 are defined so that the tablet J is contained within the storage space K10. In Embodiment 1, the dimension D4 of the storage space K10 in the front-to-back direction L is larger than the diameter D0 of the tablet J (Figures 10A and 10B). In a plan view from the vertical, the storage space K10 has an elongated shape that is long in the front-to-back direction L. In Embodiment 1, the shorter side of the storage space K10 is horizontal (width direction K). Specifically, the dimension D4 of the storage space K10 in the front-to-back direction L is larger than the dimension D6 of the storage space K10 in the width direction K.

[0061] The water supply nozzles 12 and 13 of the flow path member 11 are formed in the upper part of the containment space K10. The containment space K10 may be located directly below the water supply nozzles 12 and 13. The vertical dimension D7 of the containment space K10 is greater than the width dimension K of the containment space K10, D6. In Embodiment 1, the vertical dimension D7 of the containment space K10 is equal to the front-to-back dimension L D4 of the containment space K10. The vertical dimension D7 may be greater than the front-to-back dimension L D4.

[0062] Furthermore, multiple dot-shaped protrusions 92 are formed on the peripheral wall 81 surrounding the storage space K10, projecting in the width direction K and contacting the fabric softener case 61. In Embodiment 1, four protrusions 92 are formed and have a spherical shape. The four protrusions 92 are arranged to surround the storage space K10.

[0063] The front end L1 of the peripheral wall 81 forms a hook portion 81a that bends relative to the front surface and protrudes toward the front L1. The rear end L2 of the peripheral wall 81 forms a gripping portion 81b that bends relative to the back surface and protrudes toward the rear L2.

[0064] The hook portion 81a and the gripping portion 81b hook onto the wall portion defining the space 67 (Figure 5). Furthermore, when removing the tablet case 63 from the main body portion 64, the user can grasp the gripping portion 81b and lift the tablet case 63. The gripping portion 81b may be patterned so that the user can easily recognize that it is a gripping member. In Embodiment 1, a linearly extending protrusion 81c is formed on the upper surface of the gripping portion 81b.

[0065] As shown in Figure 9C, the projection 87 is provided between the lower end of the inclined surface 84 and the water supply position K1, with a gap R1 in the front-rear direction L from the lower end of the inclined surface 84. The projection 87 is a member for guiding the tablet J from the inclined surface 84 to the water supply position K1. Therefore, the width D5 of the gap R1 between the projection 87 and the inclined surface 84 is smaller than the diameter D0 of the tablet J. The projection 87 may be inclined downward toward the rear side L2. The projection 87 may be formed along the inclined surface 84, for example, along the extension of the inclined surface 84.

[0066] The protruding portion 87 is separated from the peripheral wall 81. Below the protruding portion 87, a space R2 is formed between it and the peripheral wall 81.

[0067] The protrusion 88 is provided between the protrusion 87 and the water supply position K1, at a distance from the lower end of the protrusion 87. The protrusion 88 functions as a retaining part that holds the tablet J in the storage space K10. Therefore, the protrusion 88 is provided at a height from the bottom wall 86 that is less than or equal to the diameter D0 of the tablet J. The protrusion 88 may extend in the vertical direction. This structure makes it easier to stably hold the tablet J in the storage space K10 compared to the case where the protrusion 88 extends in the front-rear direction L.

[0068] The protruding portion 88 is separated from the peripheral wall 81 and is positioned above the bottom wall portion 86 with a gap R3. Therefore, the space R2 below the protruding portion 87 and the storage space K10 are in communication through the gap R3 below the protruding portion 88. By providing the gap R3, water supplied to the storage space K10 flows into space R2 and is drained through the mesh 82 provided in space R2. Therefore, the rise in the water level in the tablet case 63 can be suppressed. Furthermore, by providing a gap R1, a so-called stepping stone structure is formed between the inclined surface 84 and the protruding portion 87. Even if the water level rises and water rides up onto the protruding portion 87, the water can be dropped into space R2 through the gap R1. Therefore, the water can be prevented from pushing fragments of the tablet J up onto the inclined surface 84. Compared to the case where the inclined surface 84 and the protrusion 87 are continuous, the area between the inclined surface 84 and the protrusion 87 can be reduced, thereby suppressing the residue of tablet J fragments on the inclined surface 84 or the protrusion 87.

[0069] In the peripheral wall 81, the inclined surface 84, the vertical wall portion 85, and the bottom wall portion 86 are smoothly connected. The corner between the vertical wall portion 85 and the bottom wall portion 86 has curvature. Therefore, compared to the case where the curvature of the corner is small, fragments of the tablet J are less likely to get stuck in the corner, and the amount of undissolved tablet J can be suppressed.

[0070] As shown in Figure 9D, the peripheral wall 81 protrudes from the side wall 80 toward the outer wall 89 of the softener case 61. Therefore, the outer wall 89 forms the other side wall of the tablet case 63. The side wall 80 and the outer wall 89 face each other. On the other hand, when the tablet case 63 is removed from the main body 64, the outer wall 89 remains on the main body 64, and the opposing state between the side wall 80 and the outer wall 89 is automatically released. Releasing the opposing state makes it easier to access the inner wall of the tablet case 63, and makes it easier to clean and maintain the inner wall of the tablet case 63.

[0071] The width dimension K of the peripheral wall 81 is smaller than the front-to-back dimension L of the side wall 80. That is, the width dimension K in which the peripheral wall 81 protrudes is the shorter side of the tablet case 63, and the depth from the side wall opening facing the side wall 80 to the inner wall surface of the side wall 80 is shallow. This structure makes it easier to access the inner wall surface of the side wall 80 and to clean it. The mesh 82 is provided on the inner wall surface of the side wall 80, facing the side wall opening. Therefore, it is easy to access the mesh 82 through the side wall opening and to clean it.

[0072] The protrusions 83a and 83b are located on the upper part of the outer wall 89. The protrusions 83a and 83b push back against the outer wall 89 even if the outer wall 89 bulges outward when the main body 64 is molded. In other words, the protrusions 83a and 83b have the function of correcting the shape of the fabric softener case 61. This structure ensures that there is space inside the tablet case 63. By forming the protrusions 83a and 83b near the center of the tablet case 63, the deflection of the fabric softener case 61 can be corrected over a wider area compared to when they are provided at the ends in the front-to-back direction L of the tablet case 63. Furthermore, when the fabric softener case 61 is molded from resin, it is long in the front-to-back direction L and therefore tends to bulge in the width direction K, but by providing the protrusions 83a and 83b, the resin-molded part can be used more effectively.

[0073] The projection 92 also contacts the outer wall 89. As a result, a gap R4 is formed between the peripheral wall 81 and the outer wall 89 of the fabric softener case 61. With this structure, water is drained from between the peripheral wall 81 and the outer wall 89. By providing a gap R4 in the peripheral wall 81, a drainage path other than the mesh 82 is provided, making it possible to drain water even if the mesh 82 becomes clogged. In addition, by providing a gap R4 in the peripheral wall 81, the tablet case 63 can be manufactured more easily compared to the case where a gap is provided in the bottom wall 86. The width dimension D6 of the gap R4 may be smaller than the opening size of the mesh 82. With this structure, even when water passes through the gap R4, the filter function of the mesh 82 is not impaired.

[0074] Because the projection 92 has a spherical shape, the contact area with the fabric softener case 61 can be reduced, thereby reducing friction between the tablet case 63 and the fabric softener case 61. As a result, the tablet case 63 can be easily removed.

[0075] As the protruding portion 83a strikes the outer wall 89, as shown in Figure 9A, the protruding portion 83a divides the upper opening of the tablet case 63 into a front L1 input port 63a and a rear L2 opening 63b. The opening 63b is located above the storage space K10. The input port 63a is an opening for inserting tablets J, and the opening 63b is an opening for supplying water to the tablets J from the water supply nozzles 12 and 13. In addition, the opening 63b is also an opening for checking whether or not tablets J have been inserted.

[0076] Returning to Figure 3, when the main body 64 is pulled out of the unit case 50, the input opening 63a is exposed over its entire surface. The input opening 63a may have a vertically elongated shape, that is, the width D2 of the input opening 63a may be smaller than the length D3 of the input opening 63a in the front-to-back direction L. On the other hand, when the main body 64 is pulled out of the unit case 50, the opening 63b is exposed in part. The user can look inside the tablet case 63 through the opening 63b to confirm whether or not tablets J have already been inserted. The size of the exposed opening 63b may be smaller than the outer dimensions of the tablets J.

[0077] Furthermore, as shown in Figures 9A and 9B, the mesh 82 may be composed of ribs 82a and 82b extending in two intersecting directions. In Embodiment 1, the mesh 82 is composed of a plurality of ribs 82a (Figure 9A) extending in the lateral direction (front-to-back direction L) and a plurality of ribs 82b (Figure 9B) extending in the vertical direction.

[0078] In the mesh 82, the ribs 82a extending horizontally form the inner wall of the tablet case 63, and the ribs 82b extending vertically form the outer wall of the tablet case 63. Because the supplied water first hits the ribs 82a extending horizontally, the water is less likely to flow downwards, and more water is discharged to the outside of the tablet case 63 through the mesh 82. As a result, the water level inside the tablet case 63 can be kept low. This prevents water from overflowing from the tablet case 63 and prevents water containing fragments of the tablet J from overflowing from openings such as the input port 63a at the top of the tablet case 63. Furthermore, the low water level prevents fragments of the tablet J from floating to the top of the tablet case 63 and remaining inside the tablet case 63 without dissolving.

[0079] As shown in Figures 10A and 10B, the tablet J has a disc shape and a diameter D0 and a thickness T0. Figure 10A shows the tablet J in a vertical position with the thickness direction perpendicular to the input direction A2. Figure 10B shows the tablet J in a horizontal position with the thickness direction parallel to the input direction A2. The vertical position is a position in which the vertical dimension is greater than the dimension of the tablet J in the short side direction (e.g., the thickness direction) in the horizontal cross-section. In order to accommodate the vertically positioned tablet J in the storage space K10, the vertical dimension D7 of the storage space K10 must be greater than the width dimension K D6, and the front-to-back dimension L D4 of the storage space K10 must also be greater than the width dimension K D6 (Figure 9A). To effectively utilize space and accommodate the vertically placed tablet J in the storage space K10, the dimension D4 in the front-to-back direction L of the storage space K10 is approximately the same as the diameter D0 of the tablet J, and the dimension D6 in the width direction K is approximately the same as the thickness T0 of the tablet J. Furthermore, the vertical orientation is the orientation in which the movable contour is in contact with the mounting surface. In this embodiment, the tablet J moves along its outer circumference, and the orientation in which the outer circumference of the tablet J is in contact with the mounting surface is the vertical orientation.

[0080] In Embodiment 1, the width D2 of the input opening 63a is smaller than the diameter D0 of the tablet J and larger than the thickness T0 of the tablet J. The length D3 of the input opening 63a is larger than the diameter D0 of the tablet J. Therefore, the tablet J passes through the input opening 63a in a vertical position. In other words, when the tablet J is placed horizontally, it becomes difficult for the tablet J to pass through the input opening 63a.

[0081] In order to effectively utilize the space in the width direction K and to load and store vertically placed tablets J into the tablet case 63, the width D2 of the input opening 63a is approximately the same as the thickness T0 of the tablets J. That is, the width D2 of the input opening 63a and the dimension D6 (Figure 9A) of the storage space K10 in the width direction K are approximately the same.

[0082] As shown in Figure 9C, when a vertically placed tablet J is inserted into the input port 63a, the tablet J rolls along the inclined surface 84 and the protrusion 87 to reach the water supply position K1. There, the arrangement of the protrusion 88 keeps the tablet J contained in the storage space K10.

[0083] When the tablet J is placed in the containment space K10, the tablet J is dissolved by water supplied from the water supply nozzles 12 and 13 (Figure 12).

[0084] Now, let's explain how to supply water to tablet J.

[0085] Figure 11 is a top view of the laundry detergent supply unit 5 with the lid 50a removed. As shown in Figure 11, the three water supply valves 10a, 10b, and 10c (Figure 3) of the water supply member 10 are connected to paths F1, F2, and F3 of the flow path member 11, respectively. Paths F1, F2, and F3 are formed independently of each other. Path F1, connected to water supply valve 10a, forms a flow path for supplying water to the detergent case 60 and the powder detergent case 62. Path F2, connected to water supply valve 10b, forms a flow path for supplying water to the fabric softener case 61 and the tablet case 63. Path F3, connected to water supply valve 10c, forms a flow 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.

[0086] The pathway F2 forms openings 14 and 15 facing the tablet case 63 and a plurality of openings 16 facing the fabric softener case 61. When the water supply valve 10b is opened and communicates with pathway F2, water flows into the tablet case 63 through openings 14 and 15 (see arrow B). Meanwhile, the water that passes through openings 14 and 15 then flows into the fabric softener case 61 through opening 16.

[0087] Figure 12 is a cross-sectional view of the laundry detergent supply unit 5. As shown in Figure 12, the top of the tablet case 63 is provided with a water supply nozzle 12 extending downward from an opening 14 and a water supply nozzle 13 extending downward from an opening 15. The water supply nozzles 12 and 13 are cylindrical members and form internal flow paths 26 and 27. Therefore, water flowing into the openings 14 and 15 is discharged into the interior of the tablet case 63 through the internal flow paths 26 and 27.

[0088] The water supply nozzles 12 and 13 are arranged in the front-to-back direction L and are located above the water supply position K1. More specifically, the water supply nozzles 12 and 13 are located opposite the water supply position K1.

[0089] Figure 13 is an enlarged perspective view of water supply nozzles 12 and 13. Figure 14A is a cross-sectional view of water supply nozzle 12. Figure 14B is a cross-sectional view of water supply nozzle 13.

[0090] As shown in Figure 13, the water supply nozzles 12 and 13 have similar shapes, and discharge openings 24 and 25 for discharging water are formed at their lower ends. The discharge openings 24 and 25 are inclined in a direction offset from the vertical. In other words, the plane through which the discharge openings 24 and 25 pass is inclined with respect to the horizontal. Discharge opening 24 is inclined in the opposite direction to discharge opening 25.

[0091] As shown in Figure 14A, the internal flow path 26 of the water supply nozzle 12 has a straight flow path 26a and an end flow path 26b. The straight flow path 26a extends downward from the opening 14. The end flow path 26b extends from the lower end of the straight flow path 26a to the discharge opening 24, inclined with respect to the vertical direction. That is, the central axis C1 of the end flow path 26b is inclined with respect to the vertical direction.

[0092] In Embodiment 1, the cross-section of the end channel 26b narrows from upstream toward the discharge opening 24, and the cross-section of the end channel 26b is formed in a tapered shape. Therefore, the water passing through the end channel 26b flows so as to gather at the central axis C1 and is easily discharged from the discharge opening 24 in a direction along the central axis C1 (diagonally downward).

[0093] As shown in Figure 14B, the internal flow path 27 of the water supply nozzle 13, like the internal flow path 26 of the water supply nozzle 12, has a straight flow path 27a and an end flow path 27b. The end flow path 27b of the water supply nozzle 13 is inclined in the opposite direction to the end flow path 26b of the water supply nozzle 12. Therefore, the central axis C2 of the end flow path 27b is inclined in the opposite direction to the central axis C1. With this structure, the water discharged from the discharge opening 25 is discharged on the opposite side to the water discharged from the discharge opening 24. This allows the tablet J to be wetted more uniformly from both sides. The inclination angles of the end flow path 26b and the end flow path 27b may be the same.

[0094] Figure 15A is a schematic cross-sectional view of the tablet case 63 as seen from the front-to-back direction L. Figure 15B is a cross-sectional view of a part of the laundry detergent supply unit 5.

[0095] As shown in Figure 15A, the end channels 26b and 27b of the water supply nozzles 12 and 13 (Figures 14A and 14B) extend toward positions offset from the water supply position K1. Specifically, the end channels 26b and 27b extend toward positions on the side wall 80 surrounding the water supply position K1 and the outer wall 89 of the fabric softener case 61. Therefore, water is discharged diagonally downward from the water supply nozzle 12 toward the side wall 80 of the tablet case 63 (arrow W1). Also, water is discharged diagonally downward in the opposite direction from the water supply nozzle 13 toward the outer wall of the fabric softener case 61 on the opposite side (arrow W2).

[0096] The water strikes point P1 on the side wall 80 and point P2 on the outer wall 89 of the fabric softener case 61, and flows downward along the wall surface. Points P1 and P2 are above the top of the tablet J and are located on the mesh 82 above the containment space K10. The water's flow velocity can be reduced by the water striking the side wall 80 at points P1 and P2. After the collision, as the water flows downward along the wall surface, it strikes the side of the tablet J and is absorbed by the tablet J. Because the water strikes the side of the tablet J indirectly after first striking the side wall 80, the force of the water hitting the tablet J can be reduced compared to when the water strikes the tablet J directly from the water supply nozzles 12 and 13.

[0097] Furthermore, after the collision, some of the water flowing downwards passes through the mesh 82 and flows out of the tablet case 63. This reduces the amount of water that reaches tablet J, further reducing the force of the water.

[0098] It is acceptable for some of the water to hit tablet J as it bounces off the wall.

[0099] As shown in Figure 15B, the height of the outer wall 89 of the fabric softener case 61 is lower than the height of the side wall 80. The tips of the water supply nozzles 12 and 13 are higher than the top of the outer wall 89 and lower than the top of the side wall 80.

[0100] The flow path member 11 is provided with a projection 11a that protrudes toward the lower hook portion 80a on the outside of the tablet case 63. As a result, a labyrinth structure is formed by the projection 11a and the side wall 80. This structure prevents water from flowing from the detergent case 60 to the tablet case 63 when water is supplied to the detergent case 60 through path F1. Similarly, it prevents water from flowing from the tablet case 63 to the detergent case 60 when water is supplied to the tablet case 63 through path F2.

[0101] Since the fabric softener case 61 is supplied with water at the same time as the tablet case 63, it is not necessary to form a labyrinth structure with the upper part of the outer wall 89.

[0102] [Operation] Next, with reference to Figure 15C, the operation of washing machine 1 when executing the sterilization course will be explained. Figure 15C is a sequence diagram of the sterilization course.

[0103] The disinfection course refers to a washing course performed to remove bacteria attached to clothing and towels. One tablet J is used in each disinfection course. After the disinfection course is completed, it is assumed that tablet J will no longer be in the tablet case 63 in the same form as when it was put in. Therefore, the user puts a new tablet J into the tablet case 63 before the next disinfection course.

[0104] As shown in Figure 15C, the disinfection course includes a washing step, a first rinse step, a second rinse step, and a spin-drying step. In the washing step, detergent is supplied to the washing tub 4, and in the rinsing step, other liquids or tablets are supplied to the washing tub 4. In Embodiment 1, tablets J are supplied to the washing tub 4 in the first rinse step. If fabric softener is also supplied, it is supplied to the washing tub 4 in the second rinse step.

[0105] First, the user puts detergent and one tablet J for one disinfection cycle into the manual dispensing unit 6. The user then puts tablet J into the dispensing opening 63a. The dispensing opening 63a is not located near the end of the manual dispensing unit 6, but is located between dispensing openings 65a and 66a. Therefore, even if tablet J is accidentally dropped from the hand, it is prevented from falling directly into the washing tub 4.

[0106] Furthermore, by providing restrictive sections (guide sections 68, 168) on the detergent cases 60 and fabric softener case 61 on the left and right sides of the opening 63a, even if a tablet J is accidentally dropped from the hand to the left or right of the opening 63a, it will get caught on one of the guide sections 68, 168. This prevents accidental insertion into the detergent case 60 or fabric softener case 61, and allows for more reliable insertion of the tablet J into the tablet case 63. When a tablet J is inserted into the opening 63a, it rolls along the inclined surface 84 to the rear L2, and is more reliably positioned in the water supply position K1 (i.e., the storage space K10).

[0107] On the other hand, the detergent may be automatically dispensed by the automatic dispensing unit 7.

[0108] <Washing process> During the washing process, the control unit C opens the water supply valve 10a to supply water to the path F1. The water flows through the path F1 into the detergent case 60 and is supplied to the washing tub 4 along with the detergent contained in the detergent case 60. The control unit C agitates the washing tub 4 to wash the laundry.

[0109] <First rinsing step> Next, in the first rinsing step, the control unit C drains the water from the washing tub 4 containing detergent and supplies fresh water to the washing tub 4 through the path F1. The control unit C continues supplying water until the water level in the washing tub 4 reaches a first predetermined water level. The first predetermined water level is the water level assumed to be necessary for the laundry to be submerged. The first predetermined water level may be calculated by the control unit C based on the weight of the laundry obtained in advance. For example, the first predetermined water level is the water level at which the bath ratio becomes 10 L / kg, according to the weight of the laundry calculated by the control unit C.

[0110] Next, the control unit C closes the water supply valve 10a and opens the water supply valve 10b to supply a small amount of water to the path F2 (hereafter referred to as the preliminary water supply step). The water flows into the tablet case 63 through the path F2 and indirectly hits the tablet J as shown in Figure 15A. The small amount of water supplied means an amount that moistens the surface of the tablet J but is insufficient to dissolve the tablet J and cause it to flow out of the tablet case 63.

[0111] Here, the amount of water supplied in the preliminary water supply step is less than the amount of water supplied in the subsequent main water supply step. In the preliminary water supply step, the small amount of water supplied from the water supply valve 10b may be 400 mL or more and 2500 mL or less, preferably 400 mL or more and 1250 mL or less. The flow rate of water supplied by the water supply valve 10b may be 5 L / min or more and 15 L / min or less. Approximately 15% of the water supplied from the water supply valve 10b is distributed to the tablet case 63, for example, 50 mL or more and 200 mL of water flow into the tablet case 63. For example, if water is supplied at 12 L / min for 5 seconds and 1000 mL of water is supplied from the water supply valve 10b, 140 mL of water will flow into the tablet case 63. The water supply time may be less than 10 seconds, preferably about 5 seconds.

[0112] Next, after the preliminary water supply step, the control unit C closes the water supply valve 10b and starts a waiting period. The waiting period is the time during which water supply from the water supply valve 10b to the path F2 is stopped. For example, the waiting period is 20 seconds or more.

[0113] By providing a waiting time, time can be secured for the moistened tablet J to effervesce during the pre-watering step. Additionally, time can be secured for the pre-watered water to penetrate further into the tablet J from its surface. Effervescent tablet J or tablet J with water penetration becomes more easily soluble in water. Performing the main watering step on easily soluble tablet J allows for easier complete dissolution compared to performing the main watering step immediately.

[0114] During the waiting time, drainage, water supply using other routes F1 and F3, or agitation of the washing tub 4 may be performed. In Embodiment 1, during the waiting time, the control unit C supplies water through route F1 until the water level in the washing tub 4 reaches a second predetermined water level. The second predetermined water level may be higher than the first predetermined water level.

[0115] Next, the control unit C opens the water supply valve 10b to supply water to the path F2 (hereinafter referred to as the main water supply step). The water flows into the tablet case 63 through the path F2 and indirectly hits the tablet J as shown in Figure 15A. Because the amount of water supplied is greater than in the preliminary water supply step, the tablet J dissolves. The dissolved tablet J is supplied to the washing tub 4 through the mesh 82 along with the water.

[0116] The amount of water supplied in this water supply step may be 30 liters, or it may be supplied for 120 seconds or more, for example, 30 times the amount of water supplied in the preliminary water supply.

[0117] <Second rinsing process> Next, in the second rinsing step, the control unit C drains the water from the washing tub 4 containing the dissolved tablets J, supplies fresh water to the washing tub 4 through the path F2, and agitates the washing tub 4. In Embodiment 1, fabric softener is supplied in the second rinsing step. The fabric softener is supplied by the automatic dispensing unit 7, not the manual dispensing unit 6. Since the manually dispensed fabric softener case 61 shares the path F2 with the tablet case 63, if the manual dispensing unit 6 is used to supply the fabric softener, it is difficult to supply the fabric softener and tablets separately, and there is a risk that the fabric softener and tablets J will mix. If the fabric softener and tablets J mix, the tablets will not be able to exert their ideal effect. On the other hand, if the fabric softener and tablets J can be dispensed separately, the tablets J can be supplied to the washing tub 4 in the first rinsing step, and the fabric softener can be supplied to the washing tub 4 in the final rinsing step (i.e., the second rinsing step). Since the laundry can be rinsed in the second rinse after the tablets J are supplied in the first rinse, the adhesion of tablets J to the laundry can be further suppressed. Since the spin-drying process can proceed immediately after the fabric softener is supplied to the washing tub 4, the components and fragrance that adhere to the laundry are maintained compared to when the rinsing process is performed after the supply. For this reason, the control unit C supplies the fabric softener using the automatic dispensing unit 7.

[0118] <Dehydration process> Next, in the dehydration process, the water in the washing tub 4 is drained and the laundry is dehydrated.

[0119] Repeating the above operation may cause undissolved tablet J to accumulate in the tablet case 63. Therefore, it is necessary to remove the tablet case 63 from the washing machine 1 and clean the tablet case 63.

[0120] First, remove the detergent supply unit 5 from washing machine 1.

[0121] Using the protrusion 81c of the gripping portion 81b as a guide, the position of the gripping portion 81b is recognized, and the finger is placed on the gripping portion 81b to lift the tablet case 63 from the main body 64.

[0122] When the tablet case 63 is removed, the opposing state between the side wall 80 and the outer wall 89 is released, exposing the inner wall of the tablet case 63, which can be easily accessed by the user. The inner wall of the tablet case 63 is washed with water. A brush or other tool may be used to scrub off any undissolved tablet J adhering to the inner wall. Here, areas where undissolved tablet J is likely to occur are the mesh 82 around the storage space K10, the bottom wall portion 86 at the water supply position K1, and the inclined surface 84, protrusions 87, and protrusions 88 that come into contact with the tablet J. If undissolved tablet J occurs on the mesh 82, the opening of the mesh 82 may become blocked, potentially reducing the drainage capacity of the tablet case 63. However, in this disclosure, since the opposing state between the side wall 80 and the outer wall 89 can be released, and the inner wall of the tablet case 63 can be accessed, the mesh 82 can be easily cleaned and the tablet J removed.

[0123] [summary] To summarize the above explanation, the features of this disclosure are described below.

[0124] The washing machine 1 according to Embodiment 1 has a tablet case for manually dispensing disinfectant tablets J, and a detergent case and a fabric softener case for manually dispensing liquid agents.

[0125] Since tablet J is a solid treatment agent, it is more likely to remain in the case without completely dissolving in water compared to liquid or powder detergents. If tablet J remains in the case, the amount of tablet J available for disinfecting laundry will decrease, reducing the disinfecting performance of tablet J on laundry. Therefore, it is necessary to properly dissolve tablet J by supplying it with water.

[0126] For proper water supply, it is essential to first correctly place tablet J into tablet case 63. However, due to the space-saving design of the manual dispensing unit 6, the cases are adjacent to each other, which could lead to the user mistakenly placing tablet J into the detergent case 60 or fabric softener case 61. In this case, tablet J may be supplied to the washing tub 4 at the wrong time, potentially damaging the clothes.

[0127] Therefore, since the openings 65a and 66a of the detergent case 60 and the fabric softener case 61 are smaller than the tablets J, even if the user puts the tablets J into the wrong place, it is possible to prevent the tablets J from reaching the bottom of the case. As a result, the user can easily remove the tablets J from the wrong place and put them back into the correct opening 63a.

[0128] When placing a tablet J into the tablet case 63, the tablet J can pass through the opening 63a when placed vertically, but it is difficult to pass through the opening 63a when placed horizontally. This configuration allows the tablet J to roll around inside the tablet case 63. Therefore, it is easy to guide the tablet J into the storage space K10 by rolling it along the inclined surface 84 and the protrusion 87. In addition, the protrusion 88 holds the tablet in place so that it does not roll away from the storage space K10. With this structure, the tablet J can receive an appropriate supply of water in the storage space K10.

[0129] The tablet J is made easier to place and hold in the storage space K10, and water can be indirectly applied to the tablet J in the storage space K10. Specifically, by directing the end channels 26b and 27b of the water supply nozzles 12 and 13 toward the wall surrounding the storage space K10, water can be indirectly applied to the tablet J. Therefore, compared to when water directly hits the tablet J, it is possible to suppress the scattering of fragments from the tablet J and their adhesion to the top of the tablet case 63. Since it is difficult to wash off fragments that adhere to the top of the tablet case 63, there is a risk that fragments will remain in the tablet case 63. Therefore, by providing sufficient water supply with this water supply structure and indirectly applying water to the tablet J, the proportion supplied to the washing tub 4 by one tablet J increases, and the sterilization performance is stabilized.

[0130] Furthermore, in the water supply sequence, a pre-water supply step is performed to make the tablet J more easily soluble before the main water supply step. Therefore, the residue of tablet J in the tablet case 63 can be further suppressed.

[0131] Even if undissolved tablet J remains in the tablet case 63, the tablet case 63, having an open structure on one side, is easy to clean and remove. By forming one side wall of the tablet case 63 with the fabric softener case 61, the inner wall of the side wall 80 can be exposed simply by removing the tablet case 63 from the main body 64, allowing any accumulated undissolved tablet J to be washed away. Therefore, it is prevented that undissolved tablet J will clog the mesh 82, etc., and obstruct the passage of tablet J, further increasing the proportion supplied to the washing tub 4 by each tablet J, and stabilizing the antibacterial performance. Furthermore, it is also prevented that antibacterial tablet J will remain in the tablet case 63 for a long period of time and adversely affect the tablet case 63.

[0132] The open-sided structure allows for a reduction in the width dimension K of the tablet case 63. This enables the tablet case 63 to be constructed in a limited space, and further allows for space-saving of the laundry detergent supply unit 5.

[0133] [Effect 1] The washing machine 1 according to Embodiment 1 can achieve the following effects.

[0134] As described above, the washing machine 1 of this embodiment comprises a washing tub 4 rotatably mounted within a housing 2, and a laundry detergent supply unit 5 that supplies laundry detergent to the washing tub 4. The laundry detergent supply unit 5 includes a detergent case 60 (first laundry detergent case), a fabric softener case 61 (second laundry detergent case), and a tablet case 63 (solid detergent case). The detergent case 60 is provided with an opening 65a (first laundry detergent opening) into which detergent (first laundry detergent) is put, and it stores the detergent and supplies it to the washing tub 4. The fabric softener case 61 is provided with an opening 66a (second laundry detergent opening) into which fabric softener (second laundry detergent) different from the detergent is put, and it stores the fabric softener and supplies it to the washing tub 4. The tablet case 63 is provided with an opening 63a (solid detergent opening) into which tablets J (solid detergent) are put, and it stores the tablets J and supplies them to the washing tub 4. The opening 63a is located between the opening 65a and the opening 66a.

[0135] With this configuration, by positioning the input port 63a between input ports 65a and 66a, even if a user accidentally drops a tablet J above input port 63a, the tablet J will get caught in the detergent case 60 or fabric softener case 61. Therefore, it is possible to prevent the tablet J from being supplied to the washing tub 4 at a time unintended by the manufacturer of the washing machine 1.

[0136] The washing machine 1 of this embodiment is a washing machine in which, after the washing process, the rinsing process is performed with the tablet case 63 containing tablets J, or with the fabric softener case 61 containing fabric softener. The fabric softener case 61 is configured to supply the fabric softener it contains to the washing tub 4 during the rinsing process. The tablet case 63 is provided adjacent to the fabric softener case 61.

[0137] With this configuration, tablets J are supplied instead of the liquid agent (i.e., fabric softener) normally supplied from the manual dispensing unit 6 during the rinsing process, and by placing it adjacent to the fabric softener case 61, the path F2 can be shortened.

[0138] In the washing machine 1 of this embodiment, the tablet case 63 has a storage space K10 defined by at least the side wall 80 (wall surface) of the tablet case 63. The width dimension D6 (width) of the storage space K10 in the width direction K (short side direction) is approximately the same as the width D2 of the input opening 63a in the width direction.

[0139] This configuration makes it possible to save space in the width direction K of the tablet case 63. Therefore, the path F2 can be shortened and made more efficient. Also, since the dimensions D6 of the storage space K10 and the width D2 of the input opening 63a are approximately the same size, if the tablet J has a disc shape, the tablet J will be inserted in a vertical position and stored while maintaining that vertical position.

[0140] In the washing machine 1 of this embodiment, the detergent case 60, the tablet case 63, and the fabric softener case 61 are arranged adjacent to each other in the width direction K (one direction). The tablet case 63 is provided so that the width direction K is the shorter side direction.

[0141] This configuration allows for the provision of the tablet case 63 without unnecessarily increasing the horizontal cross-sectional area of ​​the laundry detergent supply unit 5.

[0142] In the washing machine 1 of this embodiment, the shape of the input opening 63a is a vertically elongated shape that is longer in the direction perpendicular to the width direction K.

[0143] With this configuration, if tablet J has a disc shape, it can be smoothly inserted in an upright position.

[0144] In the washing machine 1 of this embodiment, the detergent supply unit 5 is configured to be retractable from the main body of the washing machine 1. The tablet case 63 has a storage space K10 for storing tablets and an opening 63b (opening) provided at the top of the tablet case 63. The opening 63b exposes the storage space K10 when the detergent supply unit 5 is retracted from the main body of the washing machine 1.

[0145] This configuration allows the user to see the inside of the storage space K10 through the opening 63b when the laundry detergent supply unit 5 is pulled out. This prevents the user from accidentally putting in multiple tablets J.

[0146] In the washing machine 1 of this embodiment, the tablet case 63 has an inclined surface 84 (guide portion) that guides the tablets J from the input opening 63a into the storage space K10. The opening 63b is provided above the storage space K10.

[0147] This configuration allows for more reliable loading of the tablet J into the containment space K10, and the process can be visually observed through the opening 63b.

[0148] The washing machine 1 of this embodiment includes a washing tub 4 rotatably mounted within a housing 2, and a laundry detergent supply unit 5 that supplies laundry detergent to the washing tub 4. The laundry detergent supply unit 5 has a detergent case 60 (first laundry detergent case) and a tablet case 63 (solid detergent case). The detergent case 60 is provided with an opening 65a (first laundry detergent opening) into which the detergent (first laundry detergent) is put, and it stores the detergent and supplies it to the washing tub 4. The tablet case 63 is provided with an opening 63a (solid detergent opening) into which water-soluble tablets J (solid detergent) are put, and it stores the tablets J and supplies them to the washing tub 4. The detergent case 60 is provided with a storage space 77 (laundry detergent storage space) for storing detergent and a guide section 68 (restricting section) for restricting the passage of tablets J.

[0149] This configuration prevents accidental insertion of tablets J into the input ports 65a and 66a. Furthermore, even if tablets J are accidentally inserted, they are less likely to pass through the input ports 65a and 66a. As a result, the mistakenly inserted tablets J are easier to remove and easier to reinsert in the correct location. Upon reinsertion, the tablets J reach the storage space K10 and can receive water at the appropriate time.

[0150] In the washing machine 1 of this embodiment, the opening size D1 (maximum width dimension) of the input port 65a is smaller than the longitudinal dimension D3 of the input port 63a.

[0151] This configuration makes it possible to restrict the passage of the tablet J through the input opening 65a.

[0152] In the washing machine 1 of this embodiment, the guide portion 68 (wall portion) that defines the input opening 65a functions as a restricting portion.

[0153] With this configuration, the passage of tablets J through the input port 65a can be easily restricted by adjusting the opening size D1 of the input port 65a, without the need to provide a separate restricting mechanism.

[0154] The washing machine 1 of this embodiment is provided with an opening 66a (second laundry detergent opening) into which fabric softener (second laundry detergent) is put, and further has a fabric softener case 61 (second laundry detergent case) that stores the fabric softener and supplies it to the washing tub 4. The opening 63a is located between the detergent case 60 and the fabric softener case 61.

[0155] This configuration allows for effective use of the space between the detergent case 60 and the fabric softener case 61. Furthermore, compared to cases where the dispenser 63a is located outside the detergent case 60 or the fabric softener case 61, it becomes less likely for the tablets J to fall into the washing tub 4.

[0156] In the washing machine 1 of this embodiment, the opening 63a is positioned between the guide portion 68 (wall portion) provided on the detergent case 60 and the guide portion 168 (wall portion) provided on the fabric softener case 61.

[0157] With this configuration, since the input opening 63a is positioned between the guide section 68 and the guide section 168, tablets J that are accidentally dropped near the input opening 63a are more likely to get caught in the guide sections 68 and 168.

[0158] In the washing machine 1 of this embodiment, the tablet case 63 has a storage space K10 for storing tablets J in a held state. The width dimension D6 (width) of the storage space K10 is approximately the same as the width D2 of the input opening 63a in the width direction K.

[0159] This configuration allows the width D2 of the input opening 63a to be approximately the same size as the thickness T0 of the tablet J, enabling the tablet J to be inserted and stored in a vertical position. Since the tablet J can only be inserted in a predetermined position, the user is guided to insert the tablet J carefully.

[0160] [Effect 2] The washing machine 1 of this embodiment is configured to accept single-use, water-soluble tablets J (solid agent), and comprises a washing tub 4, a tablet case 63 (solid agent case), and water supply nozzles 12 and 13 (water supply parts). The washing tub 4 is rotatably mounted within the housing 2. The tablet case 63 has a storage space K10 for accommodating the tablets J. The water supply nozzles 12 and 13 have discharge openings 24 and 25 for discharging water, and supply water into the tablet case 63 through the discharge openings 24 and 25. The water supply nozzles 12 and 13 pour water toward the side wall 80 and outer wall 89 (inner wall surface) that define the storage space K10.

[0161] This configuration reduces the amount of water discharged from the water supply nozzles 12 and 13 that directly hits the tablet J. This suppresses the scattering of fragments from the tablet J and prevents them from adhering to areas inside the tablet case 63 that are difficult for water to reach. Consequently, it is possible to suppress the residue of tablet J fragments in the tablet case 63 after water supply and improve the sterilization performance of the washing machine 1.

[0162] In the washing machine 1 of this embodiment, the storage space K10 is defined by a part of the side wall 80 and a part of the outer wall 89. The water supply nozzles 12 and 13 pour water towards the side wall 80 and outer wall 89 above the storage space K10.

[0163] With this configuration, the water discharged from the water supply nozzles 12 and 13 can wash away the tablets J adhering to the side walls 80 and outer walls 89. Furthermore, with this configuration, the force of the water discharged from the water supply nozzles 12 and 13 can be reduced by directing the water discharged from the side walls 80 and outer walls 89 to the water before it reaches the tablets J.

[0164] In the washing machine 1 of this embodiment, the dimension D6 (length) of the first side constituting the width direction K (short side direction) in the horizontal cross-section of the storage space K10 is less than or equal to the dimension D7 (length) of the second side perpendicular to the first side in the vertical direction.

[0165] This configuration allows for a reduction in the horizontal cross-sectional area of ​​the storage space K10 in which the tablets J are contained. As a result, water supplied from the water supply nozzles 12 and 13 is less likely to directly come into contact with the tablets J before hitting the side walls 80 and outer wall 89. Furthermore, the tablet case 63 can be provided in a space-saving manner.

[0166] In the washing machine 1 of this embodiment, the dimension D7 of the second side is greater than or equal to the dimension D4 (length) of the third side that constitutes the longitudinal direction in the horizontal cross-section of the storage space K10. The water supply nozzles 12 and 13 pour water upward from the second side of the side wall 80 and outer wall 89.

[0167] This configuration allows the tablet J to come into contact with water along its longitudinal direction (i.e., its diametrical direction), thus enabling efficient dissolution of the tablet J.

[0168] In the washing machine 1 of this embodiment, the inner wall surface includes a side wall 80 (first surface), which is the inner surface of the tablet case 63. The side wall 80 is provided with a mesh 82 (drainage section) having multiple water passages for draining water from inside the tablet case 63. The water supply nozzles 12 and 13 pour water towards the mesh 82.

[0169] This configuration allows the tablets J adhering to the mesh 82 to be washed away. Furthermore, this configuration ensures that some of the water supplied from the water supply nozzle 12 is discharged from the mesh 82 before it hits the tablets J.

[0170] In the washing machine 1 of this embodiment, the inner wall surface includes an outer wall 89 (second surface) that is different from the side wall 80. The water supply nozzles 12 and 13 include a water supply nozzle 12 (first water supply section) that pours water toward the mesh 82 and a water supply nozzle 13 (second water supply section) that pours water toward the outer wall 89.

[0171] This configuration allows for the washing away of tablets J adhering to the side walls surrounding the containment space K10. Furthermore, compared to a case where the washing machine 1 has only one water supply nozzle, water can be directed onto the tablets J to dissolve them more efficiently.

[0172] In the washing machine 1 of this embodiment, the water supply nozzle 12 and the water supply nozzle 13 are aligned in the front-to-back direction L (the longitudinal direction in the horizontal cross-section of the storage space K10).

[0173] This configuration allows water to be efficiently directed onto the tablet J. Even when space in the width direction K is limited, the two water supply nozzles 12 and 13 can be spatially arranged efficiently, the water supply nozzles 12 and 13 are not bulky, and the tablet case 63 can be made compact.

[0174] In the washing machine 1 of this embodiment, the tablet case 63 is provided with a protruding portion 88 (holding portion) that holds the tablet J in the storage space K10.

[0175] This configuration allows the tablet J to be held in the storage space K10. Therefore, the tablet J can be held in a position where water appropriately hits the tablet J. In other words, by providing the protrusion 88, the space L2 behind the protrusion 88 is defined as the storage space K10.

[0176] In the washing machine 1 of this embodiment, the storage space K10 is located vertically below the discharge openings 24 and 25.

[0177] This configuration allows for a reduction in the widthwise dimension of the tablet case 63 compared to the case where the end channels 26b and 27b are positioned at a distance from the storage space K10 in the widthwise direction K. Furthermore, compared to the case where the end channels 26b and 27b are positioned at a distance from the storage space K10 in the front-to-back direction L, the distance between the end channels 26b and 27b and the tablet J is reduced, making it easier for water to reach the tablet J.

[0178] The washing machine 1 of this embodiment includes a fabric softener case 61 (first laundry softener case) for storing fabric softener (first laundry softener) and a main body 64 (case housing section) for housing a tablet case 63, and a water passage F2 (flow path) provided above the main body 64 for supplying water into the main body 64. The tablet case 63 is provided adjacent to the fabric softener case 61.

[0179] With this configuration, the tablet case 63 and the fabric softener case 61 are located close together, allowing the water supply path to the tablet case 63 and the water supply path to the fabric softener case 61 to be shared. Therefore, the components for adding laundry detergent can be consolidated within the main body 64, improving user convenience.

[0180] The washing machine 1 of this embodiment is equipped with a water supply valve 10b (first water supply valve) that introduces water from the outside. The water supply valve 10b supplies water to the tablet case 63 and the fabric softener case 61.

[0181] This configuration allows the water supply valve 10b to be shared between the tablet case 63 and the fabric softener case 61, simplifying the structure of the water supply component 10. As a result, the manufacturing cost of the washing machine 1 can be reduced.

[0182] In the washing machine 1 of this embodiment, the tablet case 63 has an opening 63a for the user to put tablets J into the tablet case 63. Below the opening 63a, the tablet case 63 has an inclined surface 84 that extends diagonally downward toward the storage space K10.

[0183] This configuration allows the tablet J to be guided to the water supply position K1 so that it can receive appropriate water supply.

[0184] In the washing machine 1 of this embodiment, the tablet case 63 has a vertical wall portion 85 (wall portion) extending downward from the lower end of the inclined surface 84, and a bottom wall portion 86 extending horizontally from the lower end of the vertical wall portion 85 and provided below the storage space K10.

[0185] This configuration allows for the formation of a step below the inclined surface 84. The formation of this step increases the volume of the tablet case 63. Therefore, it is possible to suppress the rise in the water level of the tablet case 63 and reduce the possibility of fragments of the tablets J floating onto the inclined surface 84. Consequently, it is possible to prevent tablets J from remaining on the inclined surface 84.

[0186] In the washing machine 1 of this embodiment, the tablet case 63 further has a protruding portion 87 that protrudes from the side wall 80 (wall surface) of the tablet case 63 at a position with a gap R1 (spacing) from the lower end of the inclined surface 84. The protruding portion 87 is located between the inclined surface 84 and the storage space K10.

[0187] This configuration shortens the inclined surface 84 while making it easier to guide the tablet J to the storage space K10 more reliably. Shortening the inclined surface 84 prevents tablet J from remaining on the inclined surface 84. Since a gap R1 is provided between the inclined surface 84 and the protruding part 87, water can be allowed to fall through the gap R1, making it difficult for water and fragments of tablet J to rise onto the inclined surface 84.

[0188] The washing machine 1 of this embodiment is configured to accept single-use, water-soluble tablets J (solid agent). The washing machine 1 comprises a washing tub 4, a detergent case 60, a tablet case 63 (solid agent case), a water supply valve 10a (first water supply valve), a water supply valve 10b (second water supply valve), and a control unit C. The washing tub 4 is rotatably mounted within the housing 2. The detergent case 60 contains detergent. The tablet case 63 contains tablets J. The water supply valve 10a supplies water to the detergent case 60. The water supply valve 10b supplies water to the tablet case 63. The control unit C controls the water supply valves 10a and 10b to execute the washing process (first process). The washing process includes a pre-water supply step, a standby step, and a main water supply step. In the pre-water supply step, water is supplied to the tablets J by the water supply valve 10b. In the standby step, after the preliminary water supply step, the water supply by the water supply valve 10b is stopped. In the main water supply step, after the standby step, water is supplied by the water supply valve 10b to the tablets J that underwent the preliminary water supply step. 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.

[0189] With this configuration, before the main water supply step for dissolving tablet J, tablet J is moistened in the preliminary water supply step, foams during the waiting time, and becomes easier to dissolve. Therefore, it becomes easier to completely dissolve tablet J in the main water supply step. Consequently, it is possible to suppress the retention of undissolved tablet J in the tablet case 63 after the main water supply step.

[0190] In the washing machine 1 of this embodiment, the washing process includes a washing step in which detergent is added and at least two rinsing steps. This water supply step is performed in a rinsing step one or more steps prior to the final rinsing step.

[0191] This configuration allows for more thorough washing away of tablets J from laundry by performing a rinsing step after the main water supply step in which tablets J are added. This helps to suppress color fading of laundry. Furthermore, in cases where there are three or more rinsing steps, performing a rinsing step between the detergent addition step and the tablet J addition step helps to prevent detergent remaining in the washing tub 4 after the washing step from adversely affecting tablets J.

[0192] In the washing machine 1 of this embodiment, the amount of water supplied in the pre-water supply step is less than one-tenth of the amount of water supplied in the main water supply step.

[0193] This configuration prevents the tablet J from dissolving and flowing into the washing tub 4 during the pre-water supply step.

[0194] In the washing machine 1 of this embodiment, the pre-water supply step is performed when the water level in the washing tub 4 is at or above a predetermined water level.

[0195] This configuration prevents the tablets J from adhering to the laundry even when they dissolve and flow into the washing tub 4 during the pre-water supply step. Therefore, color fading of the laundry can be suppressed.

[0196] [Effect 3] The washing machine 1 of this embodiment includes a washing tub 4 rotatably mounted within a housing 2, and a tablet case 63 (solid agent case) that has a storage space K10 (solid agent storage space) for accommodating water-soluble tablets J (solid agent) and supplies the tablets J dissolved in water to the washing tub 4. The tablet case 63 is detachably mounted in the housing 2. When the tablet case 63 is attached to the housing 2, the storage space K10 is defined by opposing side walls 80 and outer wall 89 (wall surface). When the tablet case 63 is removed from the housing 2, the opposing state of the side walls 80 and outer wall 89 can be released.

[0197] With this structure, when the opposing positions of the side wall 80 and the outer wall 89 are released, the inner surface of the side wall 80 becomes easily accessible, and any accumulated undissolved tablet J can be easily washed away.

[0198] In the washing machine 1 of this embodiment, the side wall 80 has a mesh 82 (drainage section) formed to allow water to pass through.

[0199] This structure allows for easier access to the mesh 82 formed on the side wall 80 by releasing the opposing state between the side wall 80 and the outer wall 89, making it easy to wash away any tablets J stuck in the mesh 82.

[0200] In the washing machine 1 of this embodiment, the side wall 80 and the outer wall 89 face each other in the width direction K (short side direction) of the storage space K10.

[0201] This structure results in a small depth from the opening created when the opposing positions are released to the inner surface of the side wall 80. Therefore, the user can easily reach the inner surface of the side wall 80, making it easy to clean the tablet case 63.

[0202] In the washing machine 1 of this embodiment, the tablet case 63 forms an opening 63a into which the tablets J are inserted. The width D2 of the opening 63a in the width direction K is approximately the same as the dimension D6 (width) of the storage space K10 in the width direction K.

[0203] With this structure, when the size of the tablet J to be inserted is approximately the same as the insertion opening 63a, the wider surface of the tablet J faces the side wall 80. The side wall 80 has a large surface area that can come into contact with the tablet J, making it easy for undissolved tablet J to accumulate. By releasing this opposing state of the side wall 80, more of the accumulated undissolved tablet J can be washed away.

[0204] In the washing machine 1 of this embodiment, the tablet case 63 is arranged such that the shorter side of the storage space K10 is substantially horizontal.

[0205] This structure allows for easy access to the inner surface of the side wall 80 when the opposing positions are released, and also allows for a smaller tablet case 63 in the horizontal direction. Therefore, it is possible to effectively utilize horizontal space while ensuring ease of cleaning.

[0206] In the washing machine 1 of this embodiment, the tablet case 63 has a hook portion 80a, a hook portion 81a, and a gripping portion 81b (hook portion) that protrude outward from the storage space K10.

[0207] This structure allows the attachment position of the tablet case 63 on the main body 64 to be maintained by hooking the hook portion 80a, hook portion 81a, and grip portion 81b onto the main body 64. Furthermore, by pulling the grip portion 81b, the user can easily remove the tablet case 63 from the washing machine 1.

[0208] The washing machine 1 of this embodiment further includes a fabric softener case 61 (laundry agent case) which is positioned adjacent to the tablet case 63 and contains the fabric softener (laundry agent) supplied to the washing tub 4. The side wall 80 is made of the tablet case 63 and has a mesh 82 (drainage section) formed to allow water to pass through. The outer wall 89 is made of the fabric softener case 61.

[0209] With this structure, the opposing positions of the side wall 80 and the outer wall 89 can be released simply by removing the tablet case 63 from the washing machine 1.

[0210] In the washing machine 1 of this embodiment, the tablet case 63 has a peripheral wall 81 facing the fabric softener case 61. The peripheral wall 81 has a projection 92 that protrudes toward the fabric softener case 61.

[0211] This structure allows for the creation of a gap R4 between the peripheral wall 81 and the softener case 61, thereby improving the drainage of the tablet case 63. As a result, the rise in the water level of the tablet case 63 can be suppressed, preventing fragments of the tablets J from floating to the top of the tablet case 63 and remaining undissolved.

[0212] In the washing machine 1 of this embodiment, the path F2 (water supply path) between the fabric softener case 61 and the tablet case 63 is the same.

[0213] This structure simplifies the structure of path F2. In a washing machine 1 having path F2, fabric softener can be supplied to the washing tub 4 during the sterilization course by providing an automatic dispensing unit 7.

[0214] This disclosure is not limited to the embodiments described above, and can be implemented in various other forms. Furthermore, the following various other forms may also be applied to Embodiment 2.

[0215] Although the example described uses a top-loading washing machine 1, it is not limited to this. For example, washing machine 1 may be a front-loading washing machine.

[0216] While we have described an example using tablet J as a solid agent, the method is not limited to this.

[0217] While examples of tablets J containing ingredients that exhibit antibacterial properties have been described, the tablet J is not limited to these examples. For instance, tablets J may also contain ingredients with various functional properties, such as fragrance.

[0218] While the example of tablet J containing sodium dichloroisocyanurate has been described, it is not limited to this. Tablet J may also contain other dichloroisocyanurate salts, such as potassium dichloroisocyanurate. Furthermore, if a tablet containing a dichloroisocyanurate salt different from sodium dichloroisocyanurate is used, the tablet may be added to the washing tub 4 at the same time as the fabric softener.

[0219] Although an example with an automatic dispensing unit 7 has been described, the laundry detergent supply unit 5 may have only a manual dispensing unit 6.

[0220] While the example of detergent being contained in the detergent case 60 has been described, it is not limited to this. For example, bleach may be contained in the detergent case 60.

[0221] Although an example has been described in which the tablet J has a disc shape and is placed in the tablet case 63 in a vertical position, the invention is not limited to this. For example, the tablet J may have other shapes, and the input opening 63a is designed to match the shape of the tablet J. Furthermore, the shape of the input opening 63a may be modified so that the tablet J can be placed in the tablet case 63 in a horizontal position.

[0222] In this embodiment, an example was described in which the mesh 82 is composed of ribs 82a and 82b extending in two intersecting directions, but the invention is not limited to this. The mesh 82 can be any mesh that forms a drainage section or water passage area having a plurality of water passage holes.

[0223] Although an example in which the tablet case 63 has a one-sided open structure has been described, the invention is not limited to this. For example, the tablet case 63 may have a lid facing the side wall 80, and the lid may be removable from the tablet case 63. On the other hand, the one-sided open structure of Embodiment 1 makes it easier to manufacture the tablet case 63.

[0224] Although examples of water supply nozzles 12 and 13 having straight sections have been described, the invention is not limited to these. For example, water supply nozzles 12 and 13 may extend inclined from openings 14 and 15.

[0225] Although an example has been described in which the water supply path F2 between the fabric softener case 61 and the tablet case 63 is common, the system is not limited to this example. The water supply path for the fabric softener case 61 and the water supply path for the tablet case 63 may be provided independently.

[0226] While the sterilization course was described as an example of a course that dissolves a water-soluble solid agent and supplies it to the washing tub 4, the courses are not limited to this. The courses are not limited to sterilization courses, but may also be courses that impart various functionalities to the laundry, such as fragrance.

[0227] Although an example involving two rinsing steps has been described, the system is not limited to this. For example, it may include three or more rinsing steps. In this case, the water supply step is performed in a rinsing step prior to the rinsing step immediately preceding the final rinsing step. With this configuration, the final rinsing step can more reliably wash away any fragments of tablet J that have adhered to the laundry.

[0228] (Embodiment 2) A washing machine 51 according to Embodiment 2 of this disclosure will now be described. In Embodiment 2, the differences from Embodiment 1 will be mainly described, and explanations that overlap with Embodiment 1 will be omitted. In Embodiment 2, components that are the same as or equivalent to those in Embodiment 1 will be denoted by the same reference numerals.

[0229] Figure 16 is a schematic diagram of the washing machine 51 according to Embodiment 2 of the present disclosure.

[0230] Embodiment 2 differs from Embodiment 1 in the structure of the laundry detergent supply unit. Furthermore, the washing machine 51 according to Embodiment 2 is a washing machine with a drying function.

[0231] As shown in Figure 16, the washing machine 51 has a drying device 58 that circulates drying air in the washing tub 4. In addition, to form an air circulation path between the drying device 58 and the washing tub 4, the washing machine 51 has a lid 52 that covers the open tops of the washing tub 4 and the water tank 3. The lid 52 seals the open tops of the washing tub 4 and the water tank 3.

[0232] The washing machine 51 has a laundry detergent supply unit 55.

[0233] The laundry detergent supply unit 55 includes a manual dispensing unit 56 and an automatic dispensing unit 7.

[0234] Next, the configuration of the laundry detergent supply unit 55 will be explained with reference to Figures 17 and 18. Figures 17 and 18 are perspective views of the laundry detergent supply unit 55.

[0235] As shown in Figure 17, the laundry detergent supply unit 55 comprises a unit case 100, a lid 100a, a manual dispensing unit 56, an automatic dispensing unit 7, a water supply member 10, and a flow path member 101 (Figure 18).

[0236] As shown in Figure 18, the unit case 100 is a component that houses the manual feeding unit 56, the automatic feeding unit 7, and the flow path member 101. The top of the unit case 100 is open and covered with a lid 100a.

[0237] In the following explanation, the manual input unit 56 will be omitted if it overlaps with the manual input unit 6, and the flow path member 101 will be omitted if it overlaps with the flow path member 11.

[0238] The configuration of the manual dispensing unit 6 will be described in more detail with reference to Figures 18-21. Figure 19 is a perspective view of the manual dispensing unit 56. Figure 20 is a perspective view showing the manual dispensing unit 56 with the tablet case 113 and flow path members 115 and 116 removed. Figure 21 is a perspective cross-sectional view of the manual dispensing unit 56.

[0239] As shown in Figure 18, the manual loading unit 56 includes a main body 114. The main body 114 is a component that is held in the unit case 100 so as to be retractable in the front-rear direction L.

[0240] As shown in Figure 19, the main body 114 houses the flow channel members 115 and 116 and the case 113 (hereinafter referred to as the tablet case 113). The flow channel members 115 and 116 and the tablet case 113 are removably housed in the main body 114.

[0241] As shown in Figure 20, the main body 114 forms cases 110, 111, and 112, with the fabric softener case 110 containing fabric softener, the detergent case 111 containing detergent, and the powder detergent case 112 containing powder detergent.

[0242] In the main body 114, the fabric softener case 110 and the detergent case 111 are arranged side by side in the width direction K. The powder detergent case 112 has a space 117 formed in front of cases 110 and 111 L1, and a flow path 118 extending between cases 110 and 111. The flow path 118 communicates with space 117. The flow path 118 slopes downward toward the rear L2 from the connection point with space 117, and has an outlet (not shown) at its lower end that communicates with the washing tub 4. The upper parts of cases 110 and 111 form inlet openings 110a and 111a, and the upper part of space 117 forms an inlet opening 117a. Cases 110 and 111 are provided with liquid dispensing flow paths 73 and 74, respectively.

[0243] The tablet case 113 is positioned above the flow path 118, that is, between cases 110 and 111. The tablet case 113 contains the tablets J and forms an inlet 113a at its front L1 for inserting the tablets J. The inlet 113a is positioned between cases 110 and 111, which are aligned in the width direction K.

[0244] The tablet case 113 has gripping portions 113b that protrude upward from both sides of the insertion opening 113a. When removing the tablet case 113 from the main body 114, the user can grasp the gripping portions 113b and lift the tablet case 113. The gripping portions 113b may be patterned so that the user can easily recognize that they are grippable. In Embodiment 2, linearly extending protrusions 113c are formed on the side surfaces of the gripping portions 113b.

[0245] The flow path members 115 and 116 are positioned to cover the liquid discharge flow paths 73 and 74 of the cases 110 and 111, respectively.

[0246] The flow path members 115 and 116 each form restricting portions 119 and 120 that restrict the entry of the tablets J. As shown in Figure 21, the flow path member 116 has a restricting portion 120 that protrudes in the front-rear direction L between the inlet 111a and the inner bottom surface 111b of the case 111. The restricting portion 120 extends intersecting the direction in which the tablets J fall so as to prevent the tablets J placed in the case 111 from reaching the inner bottom surface 111b of the case 111. The restricting portion 120 is located upstream of the inlet of the liquid dispensing flow path 74. The flow path member 115 similarly has a restricting portion 119 that protrudes in the front-rear direction L.

[0247] The tablet case 113 has a restricting portion 121 that protrudes downward at the connection point between the space 117 and the flow path 118. The restricting portion 121 extends intersecting the direction from the space 117 to the flow path 118 in order to prevent the tablet J placed in the space 117 from entering the flow path 118. In other words, the restricting portion 121 has the function of narrowing the entrance to the flow path 118. In the second embodiment, the distance from the lower end of the restricting portion 121 to the bottom surface 118b of the flow path 118 is smaller than the diameter D0 of the tablet J.

[0248] The tablet case 113 has a hook portion 122 that protrudes in the width direction K and hooks onto the upper part of the side walls of the cases 110 and 111. The hook portion 122 has a restricting portion 123 that protrudes further in the width direction K relative to the hook portion 122 and partially covers the input openings 110a and 111a of the cases 110 and 111. The restricting portion 123 forms an edge 124 that faces in the front-to-back direction L to prevent the tablet J placed in the case 110 from moving to the rear side L2.

[0249] Figure 22 is a perspective view of the tablet case 113. Figure 23 is a perspective view of the tablet case 113 in the open state. Figure 24 is a cross-sectional view of the tablet case 113 viewed from the front-to-back direction L.

[0250] As shown in Figure 22, an input opening 113a is formed at the top of the tablet case 113. The input opening 113a extends from the front of the tablet case 113 in the front-to-back direction L. The input opening 113a may have a vertically elongated shape, similar to the input opening 63a.

[0251] As shown in Figure 23, the tablet case 113 is an openable and closable member and has a first side wall 140, a second side wall 142, a peripheral wall 141, a constricted portion 137, and a holding portion 138. The first side wall 140 and the second side wall 142 are connected to each other by a rotation axis X. The orientation of the tablet case 113 can be changed between an orientation in which the first side wall 140 and the second side wall 142 face each other (Figure 22) and an orientation in which the first side wall 140 and the second side wall 142 are aligned with each other (Figure 23) when detached from the main body 114. Specifically, the second side wall 142 is rotatable around a rotation axis X along the peripheral wall 141 (see arrow G). By rotating the second side wall 142 to release the opposing state, the inner wall of the tablet case 113 becomes easier to access, making it easier to clean and maintain the inner wall of the tablet case 113.

[0252] The first side wall 140 and the second side wall 142 form a mesh 132a that penetrates in the thickness direction of the side wall. The dissolved tablet J flows out through the mesh 132a with water and is put into the washing tub 4. The first side wall 140 further forms a mesh 132b in front of the mesh 132a L1. The mesh 132b is formed at a height lower than the apex of the mesh 132a.

[0253] The peripheral wall 141 is connected to the outer periphery of the first side wall 140 and forms the bottom wall portion 136 of the tablet case 113, which extends in the front-rear direction L. The bottom wall portion 136 below the input opening 113a forms a water supply position K2 that supports the inserted tablet J.

[0254] The constricted portion 137 is a wall portion that protrudes in the width direction K from the inner walls of the side walls 140 and 142 toward the opposing side wall. The constricted portion 137 has the function of separating the first space R11 where the water supply position K2 is located from the second space R12 on the rear side L2. The first space R11 is a space for accommodating the tablets J and corresponds to the accommodating space K10 in Embodiment 1. The second space R12 is a space for allowing sufficiently small fragments generated from the dissolved tablets J to pass through and be discharged from the mesh 132a. The constricted portion 137 prevents tablets J and larger fragments generated from tablets J from flowing from the first space R11 into the second space R12. Large fragments refer to fragments that are too large to pass through the mesh 132a and that block the mesh 132a.

[0255] As shown in Figure 24, the distance R5 between the constricted portion 137 provided on the first side wall 140 and the constricted portion 137 provided on the second side wall 142 decreases as it approaches the bottom wall 136. Therefore, the structure of the constricted portion 137 makes it easier to restrict the passage of large, heavy fragments of the tablet J.

[0256] The retaining portion 138 protrudes further in the width direction K from the constricted portion 137. The retaining portion 138 connects the constricted portion 137 provided on the first side wall 140 and the constricted portion 137 provided on the second side wall 142. Therefore, even when the tablet J becomes thinner, it is possible to restrict the movement of the tablet J from the first space R11 to the second space R12.

[0257] Figure 25 is a cross-sectional view of the laundry detergent supply unit 55. As shown in Figure 25, the water supply nozzles 12 and 13 are located above the water supply position K2. Water is supplied to the tablet case 113 through the inlet 113a. Therefore, the inlet 113a is used for both loading the tablets J and supplying water. Similar to Embodiment 1, the water discharged from the water supply nozzles 12 and 13 hits the side walls 140 and 142 around the water supply position K2.

[0258] [effect] The washing machine 51 according to Embodiment 2 can achieve the following effects.

[0259] As described above, the washing machine 51 of this embodiment includes a washing tub 4 rotatably mounted within the housing 2, and a laundry detergent supply unit 55 that supplies laundry detergent to the washing tub 4. The laundry detergent supply unit 55 includes a detergent case 111 (first laundry detergent case) and a tablet case 113 (solid detergent case). The detergent case 111 is provided with an opening 111a (first laundry detergent opening) into which the detergent (first laundry detergent) is put, and it stores the detergent and supplies it to the washing tub 4. The tablet case 113 is provided with an opening 113a (solid detergent opening) into which water-soluble tablets J (solid detergent) are put, and it stores the tablets J and supplies them to the washing tub 4. The detergent case 111 is provided with a storage space (laundry detergent storage space) for storing detergent and a restricting section 120 for restricting the passage of tablets J.

[0260] This configuration prevents accidental insertion of tablet J into the input port 111a. Even if tablet J is mistakenly placed into the detergent case 111, its passage is restricted, making it easier to remove tablet J from the detergent case 111 and re-insert it in the correct location. Upon re-insertion, tablet J reaches the water supply position K2 and receives water at the appropriate time.

[0261] In the washing machine 51 of this embodiment, the restricting portion 120 protrudes in the front-to-back direction L (lateral direction) between the input opening 111a and the inner bottom surface 111b of the case 111.

[0262] With such a configuration, the tablet J accidentally put into the case 111 hits the regulating part 120, making it difficult to reach the inner bottom surface 111b of the detergent case 111. Also, the inlet 113a is not located near the end of the manual input unit 56 and is between the inlets 111a and 110a. Therefore, even if the tablet J is accidentally dropped by hand, it can be prevented from directly falling into the washing tub 4. Since the regulating parts 119 and 120 are provided on the left and right of the inlet 113a, even if the tablet J is accidentally dropped by hand to the left or right of the inlet 113a, it will be caught by either the left or right regulating part 119 or 120. Thus, the accidental input of the tablet J can be suppressed. Even in the case of accidental input, since the tablet J stops at a position closer to the inlets 110a and 111a than the bottom surfaces of the cases 110 and 111, the tablet J is easy to take out.

[0263] In the washing machine 51 of this embodiment, the detergent supply unit 55 has a liquid agent discharge flow path 74 (discharge part) that discharges the detergent and water from the storage space. The regulating part 120 is provided at the inlet of the liquid agent discharge flow path 74.

[0264] With such a configuration, even if the tablet J is accidentally dropped into the inlet 111a, it can be prevented from reaching the liquid agent discharge flow path 74.

[0265] In the washing machine 51 of this embodiment, the tablet case 113 has a first side wall 140, a second side wall 142 facing the first side wall 140, and a rotating shaft X (connection part) that connects the first side wall 140 and the second side wall 142 in an openable and closable manner.

[0266] With such a configuration, by rotating the tablet case 113 around the rotating shaft X, the opposing state of the side walls 140 and 142 can be released. Therefore, it becomes easier to access the inner wall of the tablet case 113, the washing and maintenance of the tablet case 113 become easier, and the fragments of the tablet J attached to the inner wall can be washed off.

[0267] In the washing machine 51 of this embodiment, the first side wall 140 and the second side wall 142 have a mesh 132a (drainage part) formed to allow water to pass through.

[0268] With such a configuration, by providing the meshes 132a on the side walls 140 and 142 on both sides, the drainage performance of the tablet case 113 can be further improved. Therefore, even when the volume of the tablet case 113 is small, it is possible to suppress an increase in the water level inside the tablet case 113 and prevent fragments of the tablet J from adhering to and remaining melted on the upper part of the tablet case 113.

[0269] In the washing machine 51 of this embodiment, the first side wall 140 has a hooking part 122 (first hooking part) that protrudes outward from the water supply position K2 (tablet storage space), and the second side wall 142 has a hooking part 122 (second hooking part) that protrudes outward from the water supply position K2.

[0270] With such a configuration, by providing the hooking parts 122 on the side walls 140 and 142 on both sides, the tablet case 113 can be stably held in the manual input unit 56.

[0271] The washing machine in the first aspect is a washing machine configured to be able to input a water-soluble single-use solid agent, and includes a washing tub rotatably provided in a housing, a solid agent case having a storage space for storing the solid agent, and a water supply part having a discharge opening for discharging water and supplying water into the solid agent case through the discharge opening. The water supply part injects water toward the inner wall surface defining the storage space.

[0272] As the washing machine in the second aspect, in the washing machine in the first aspect, the storage space is defined by a part of the inner wall surface, and the water supply part injects water toward the inner wall surface above the storage space.

[0273] As the washing machine in the third aspect, in the washing machine in the first or second aspect, the length of the first side constituting the short side direction in the horizontal cross-section of the storage space is less than or equal to the length of the second side orthogonal to the first side in the vertical direction.

[0274] In the fourth embodiment, the washing machine is as described in any of the first to third embodiments, wherein the length of the second side is greater than or equal to the length of the third side that constitutes the longitudinal direction in the horizontal cross-section of the storage space, and the water supply section pours water upward from the second side of the inner wall surface.

[0275] As a washing machine in the fifth embodiment, in a washing machine in any of the first to fourth embodiments, the inner wall surface includes a first surface which is the inner surface of the solid agent case, and the first surface is provided with a drain section having a plurality of water passage holes for draining water from inside the solid agent case, and the water supply section pours water toward the drain section.

[0276] As a washing machine in the sixth embodiment, in a washing machine in any of the first to fifth embodiments, the inner wall surface includes a second surface different from the first surface, and the water supply section includes a first water supply section that pours water toward the drain section and a second water supply section that pours water toward the second surface.

[0277] In the seventh embodiment, the washing machine is such that, in any of the first to sixth embodiments, the first water supply unit and the second water supply unit are aligned in the longitudinal direction in the horizontal cross-section of the storage space.

[0278] In the eighth aspect of the washing machine, in the washing machine according to any of the first to seventh aspects, the solid agent case is provided with a holding part for holding the solid agent within the storage space.

[0279] In the ninth embodiment, the washing machine is located in any of the first to eighth embodiments, with the storage space situated vertically below the discharge opening.

[0280] As a washing machine in the tenth embodiment, in a washing machine in any of the first to ninth embodiments, a case housing section housing a first detergent case for housing a first detergent and a solid detergent case, and a flow path provided above the case housing section for supplying water into the case housing section, The solid agent case is provided adjacent to the first laundry detergent case.

[0281] As a washing machine in the eleventh embodiment, the washing machine in any of the first to tenth embodiments is equipped with a first water supply valve for introducing water from the outside, the first detergent case is a fabric softener case for containing fabric softener, and the first water supply valve supplies water to the solid detergent case and the fabric softener case.

[0282] As a washing machine in the twelfth embodiment, in a washing machine in any of the first to eleventh embodiments, the solid agent case has an opening for the user to put solid agents into the solid agent case, and the solid agent case has an inclined surface below the opening that extends diagonally downward toward the storage space.

[0283] In the washing machine according to the 13th embodiment, in the washing machine according to any of the 1st to 12th embodiments, the solid agent case has a wall portion extending downward from the lower end of the inclined surface, and a bottom wall portion extending laterally from the lower end of the wall portion and provided below the storage space.

[0284] In the washing machine according to the 14th embodiment, in the washing machine according to any of the first to 13 embodiments, the solid agent case further has a projection that protrudes from the wall surface of the solid agent case at a position spaced apart from the lower end of the inclined surface, and the projection is located between the inclined surface and the storage space.

[0285] The washing machine in the 15th embodiment is configured to be able to accept a water-soluble, single-use solid agent, and comprises a washing tub rotatably mounted inside the casing, a detergent case for containing detergent, a solid agent case for containing the solid agent, a first water supply valve for supplying water to the detergent case, a second water supply valve for supplying water to the solid agent case, and a control unit that controls the first water supply valve and the second water supply valve and executes a first step, wherein the first step includes a preliminary water supply step in which water is supplied to the solid agent by the second water supply valve, a standby step in which water 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 by the second water supply valve after the standby step, wherein 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.

[0286] As the washing machine according to the 16th aspect, in the washing machine according to the 15th aspect, the first step includes a washing step of adding a detergent and at least two rinsing steps, and this water supply step is executed in a rinsing step one or more steps before the final rinsing step.

[0287] As the washing machine according to the 17th aspect, in the washing machine according to the 15th or 16th aspect, the water supply amount in the preliminary water supply step is less than one-tenth of the water supply amount in this water supply step.

[0288] As the washing machine according to the 18th aspect, in the washing machine according to any one of the 15th to 17th aspects, the preliminary water supply step is executed in a state where the water level in the washing tub is at or above a predetermined water level.

[0289] Although the present disclosure is fully described in connection with preferred embodiments with reference to the accompanying drawings, various modifications and changes will be apparent to those skilled in the art. Such modifications and changes should be understood to be included therein as long as they do not depart from the scope of the present invention defined by the appended claims.

Industrial Applicability

[0290] The washing machine of the present disclosure can improve the function of the configuration related to the input of the solid agent, and thus is useful as a household washing machine, a commercial washing machine, or any type of washing and drying machine (for example, a household drum washing machine).

Explanation of Reference Numerals

[0291] 1 Washing machine 2 Housing 3 Water tank 4 Washing tub 5 Detergent supply unit 6 Manual input unit 7 Automatic input unit 10 Water supply member 11 Flow path member 12 Water supply nozzle 13 Water supply nozzle 26 Internal flow path 27 Internal flow path 26b End channel 27b End channel 50 Unit Case 60 detergent cases 61 Fabric softener case 62 Powder detergent case 63 Pill Cases 63a Inlet 65 Input port member 66 Input port member 68 Guide section 80 side wall 81 Peripheral wall 82 mesh 84 Slope 87 Protrusion 88 Protrusion

Claims

1. A washing machine configured to allow the insertion of a single-use, water-soluble solid agent, A washing tub is rotatably mounted inside the casing, A solid agent case having a storage space for containing the solid agent, A water supply unit having a discharge opening for releasing water, and supplying water into the solid agent case through the discharge opening, Equipped with, The inner wall surface defining the aforementioned containment space includes the first surface which is the inner surface of the solid agent case, The first surface is provided with a drainage section having multiple water passages that capture the solid agent while draining water from inside the solid agent case. The washing machine wherein the water supply section has a flow path inside that extends toward the drain section provided on the inner wall surface defining the storage space.

2. A washing machine configured to allow the insertion of a single-use, water-soluble solid agent, A washing tub is rotatably mounted inside the casing, A solid agent case having a storage space for containing the solid agent, A water supply unit having a discharge opening for releasing water, and supplying water into the solid agent case through the discharge opening, Equipped with, The inner wall surface defining the aforementioned containment space includes a first surface which is the inner surface of the solid agent case and a second surface which is different from the first surface. The first surface is provided with a drainage section having multiple water passages for draining water from inside the solid agent case. The washing machine includes a water supply section which includes a first water supply section which pours water toward the drain section and a second water supply section which pours water toward the second surface.

3. The washing machine according to claim 2, wherein the first water supply unit and the second water supply unit are aligned in the longitudinal direction in the horizontal cross-section of the storage space.

4. The washing machine according to any one of claims 1 to 3, wherein the solid agent case is provided with a holding portion for holding the solid agent within the containment space.

5. The washing machine according to claim 4, wherein the storage space is located vertically below the discharge opening.

6. A first laundry agent case for containing the first laundry agent and a case housing section for containing the solid agent case, A channel is provided above the case housing section for supplying water into the case housing section, Equipped with, The washing machine according to any one of claims 1 to 3, wherein the solid agent case is provided adjacent to the first laundry detergent case.

7. It is equipped with a first water supply valve that introduces water from the outside, The first laundry detergent case is a fabric softener case for storing fabric softener, The washing machine according to claim 6, wherein the first water supply valve supplies water to the solid agent case and the fabric softener case.

8. The solid agent case has an opening for the user to put the solid agent into the case. The washing machine according to any one of claims 1 to 3, wherein the solid agent case has an inclined surface below the input opening that extends diagonally downward toward the containment space.

9. The aforementioned solid agent case is A wall portion extending downward from the lower end of the inclined surface, The washing machine according to claim 8, further comprising: a bottom wall portion extending laterally from the lower end of the wall portion and provided below the storage space.

10. The solid agent case further has a protrusion that extends from the wall surface of the solid agent case at a position spaced apart from the lower end of the inclined surface, The washing machine according to claim 9, wherein the protruding portion is located between the inclined surface and the storage space.

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