TW202346678A - Washing machine and washing method - Google Patents

Abstract

A washing machine according to an embodiment of the present disclosure is configured so as to allow the loading of a water-soluble single-use solid agent. This washing machine comprises: a washing tub that is rotatable within a housing; a detergent case that contains detergent to be supplied to the washing tub; and a solid agent case that contains solid agents to be supplied to the washing tub. This washing machine also comprises: a first water supply valve that supplies water to the detergent case; a second water supply valve that supplies water to the solid agent case; and a control unit that controls the first water supply valve and the second water supply valve. The control unit opens the first water supply valve and closes the second water supply valve in a washing process, and, in a rinsing process after the washing process, opens the second water supply valve to perform a main water supply step (S34) to supply water to the solid agent.

Description

Washing Machines and Laundry Methods

This disclosure relates to a washing machine.

For example, Patent Document 1 discloses a washing machine that uses metal ions having a sterilizing effect to clean laundry.

The washing machine described in Patent Document 1 includes a metal ion generating unit that generates metal ions, and a control device that controls washing, rinsing, and dehydration processes. The control device operates the metal ion generating component in the final cleaning process. Prior technical literature

patent documents Patent Document 1: Japanese Patent No. 6857805

However, from the viewpoint of the sterilizing performance of laundry, there is still room for improvement.

Therefore, the present disclosure provides a washing machine and a washing method that can improve the sterilization performance of laundry.

A washing machine according to one aspect of the present disclosure is a washing machine configured to be able to put in a water-soluble disposable solid agent, and is provided with: a washing tank rotatably installed in the housing; and a detergent box that accommodates the detergent supplied to the washing tank. detergent; and a solid agent box to accommodate the solid agent supplied to the washing tank. Furthermore, the washing machine is provided with: a first water supply valve that supplies water to the detergent box; a second water supply valve that supplies water to the solid agent box; and a control unit that controls the first water supply valve and the second water supply valve. In the washing process, the control unit opens the first water supply valve and closes the second water supply valve. In the washing process after the washing process, the control unit opens the second water supply valve and performs a formal water supply step of supplying water to the solid agent.

A laundry method according to one aspect of the present disclosure is a laundry method performed by a washing machine incorporating a water-soluble disposable solid agent. The washing machine is equipped with: a washing tank rotatably installed in the casing; a detergent box accommodating detergent supplied to the washing tank; a solid agent box accommodating solid agent supplied to the washing tank; and a first water supply valve for The detergent box supplies water; and the second water supply valve supplies water to the solid agent box. The washing method includes: opening the first water supply valve and closing the second water supply valve during the washing process; and performing the formal water supply step of opening the second water supply valve and supplying water to the solid agent in the washing process after the washing process.

The washing machine according to one aspect of the present disclosure and the laundry method according to one aspect of the present disclosure can improve the sterilization performance of laundry.

Form used to implement the invention (Knowledge and insights that form the basis of this disclosure, etc.) At the time when the inventors came up with the present disclosure, a water-soluble solid agent containing sodium dichloroisocyanurate was known as a technology of disinfectant for bathroom cleaning. The inventors used the technology of sterilizing agents for bathroom cleaning as a reminder and came up with the concept of a washing machine in which a disposable water-soluble solid agent is added to impart the solid agent component to the laundry. Furthermore, the inventors discovered the following problem: when a dissolved solid agent is mixed with other detergents such as lotion or softener, a chemical reaction occurs and the bactericidal performance is reduced. Furthermore, when dissolved solid matter adheres to the laundry, there is a risk that the laundry may become discolored. In order to solve these problems, the inventors finally formed the subject of this disclosure. (implementation form)

A washing machine 1 according to an embodiment of the present disclosure will be described. In addition, below, the vertical direction in the state where the washing machine 1 is installed as shown in FIG. 1 may be described as an up-down direction. [Overall composition]

FIG. 1 is a perspective view showing the structure of a washing machine 1 according to an embodiment of the present disclosure. The washing machine 1 is an upright type washing machine, and is configured so that tablet J, which is an example of a water-soluble disposable solid agent, can be inserted (see FIG. 5 ). As shown in FIG. 1 , the washing machine 1 includes a housing 2 , a water tank 3 , a washing tub 4 , a detergent supply unit 5 , a stirring mechanism 8 , a drain valve 9 , a water level sensor 25 , a weight sensor 26 , and a water temperature sensor. Detector 27, heater 28 and control unit C. ＜Casing＞

The casing 2 is a member that forms the appearance of the washing machine 1 . An opening 20 and an openable and closable door 21 covering the opening 20 are provided on the upper surface of the housing 2 . ＜Sink＞

The water tank 3 is a substantially cylindrical member that is provided inside the housing 2 and has one end closed to store wash water. The water tank 3 can also be called an outer tank. ＜Sink＞

The washing tub 4 is a substantially cylindrical member that is rotatably provided inside the tub 3 and accommodates laundry such as clothes. The washing tub 4 is formed with a plurality of through holes 40 communicating with the water tank 3 . The through hole 40 is formed so that wash water and detergent can move between the water tank 3 and the washing tank 4 . The washing tub 4 further has an opening 41 at a position facing the opening 20 of the housing 2 . Laundry is put into the washing tub 4 through the opening 41 . The washing tank 4 can also be called a drum or an inner tank. <Detergent supply unit>

The detergent supply unit 5 is a unit that supplies detergent such as liquid detergent, powder detergent, and solid detergent to the washing tub 4 . Supplying the detergent means discharging it downward toward the washing tub 4 . The liquid agent refers to a liquid agent used for washing laundry items such as clothing. Liquids may also include lotions, softeners, and neutral lotions.

The detergent supply unit 5 includes a manual insertion unit 6 and an automatic insertion unit 7 . ＜Stirring mechanism＞

The stirring mechanism 8 stirs the water and laundry in the washing tub 4 . The stirring mechanism 8 is, for example, a rotating disk connected to the bottom surface of the washing tub 4 . The stirring mechanism 8 performs a reversing action. ＜Drain valve＞

The drain valve 9 is openable and closable, and is a valve for draining water accumulated in the water tank 3 (sink 4) when opened. In addition, although the drain valve 9 is shown as being present outside the washing machine 1 in FIG. 1 , it is installed in the lower part of the casing 2 . ＜Sensor＞

The water level sensor 25 is a sensor that measures the water level of the water contained in the washing tub 4 . The water level sensor 25 is, for example, a pipe containing air, and detects the water level in response to the pressure difference caused by the increase or decrease of the water level. The water level sensor 25 is equivalent to an example of the flow rate detection unit of the disclosure, and detects the flow rate of water supplied to the washing tub of the disclosure. The weight sensor 26 is a sensor that detects the weight of the laundry put into the washing tub 4 . The water temperature sensor 27 is a sensor that detects the water temperature of the water in the washing tub 4 and is equivalent to an example of the water temperature detection unit of the present disclosure. ＜Heater＞

The heater 28 is disposed below the washing tub 4 and is used to heat the water in the washing tub 4 . The maximum temperature of the heater 28 is, for example, 65°C. ＜Control Department＞

The control unit C is a member that controls the operation of the washing machine 1. In the embodiment, in particular, it controls the execution of a plurality of water supply valves 10a, 10b, 10c and a sterilization process described later. In addition, in FIG. 1 , although the control unit C is described as if it exists outside the washing machine 1 , the control unit C is provided in the washing machine 1 , and its arrangement is not particularly limited. The control part C can also be designed as a dedicated hardware circuit to realize this function. In addition, the control unit C may also be equipped with, for example, a memory (not shown) in which a program is stored and a processing circuit (not shown) corresponding to a processor such as a CPU (Central Processing Unit), and by processing The processor executes the program to realize the above functions. In addition, the program stored in the memory can be recorded on a non-temporary recording medium such as a memory card and provided, or can be provided through a telecommunications line such as the Internet.

Next, the structure of the detergent supply unit 5 will be described with reference to FIGS. 2 and 3 . 2 and 3 are perspective views showing the structure of the detergent supply unit 5.

As shown in FIG. 2 , the detergent supply unit 5 includes a unit box 50 , a cover 50 a , a manual injection unit 6 , an automatic injection unit 7 , a water supply member 10 and a flow path member 11 (see FIG. 3 ).

As shown in FIG. 3 , the unit box 50 accommodates the manual input unit 6 , the automatic input unit 7 , and the flow path member 11 . The upper part of the unit box 50 has an opening and is covered with a cover 50a.

The manual injection unit 6 is a mechanism for the user to manually input a single dose of detergent such as liquid detergent, powder detergent, or solid detergent every time the washing machine 1 is operated. The detergent injected into the manual injection unit 6 flows into the washing tub 4 in the amount injected.

A portion of the detergent injected into the manual injection unit 6 is accommodated in a plurality of boxes 60 , 61 , 62 , and 63 formed in the manual injection unit 6 . In the embodiment, each of the boxes 60, 61, 62, and 63 contains one portion of lotion, softener, powder lotion, and water-soluble solid agent (eg, tablet).

The automatic injection unit 7 is a mechanism that automatically loads a predetermined amount of liquid into the washing tub 4 from tanks 70 and 71 for storing liquid. The automatic input unit 7 inputs an appropriate type of liquid into the washing tub 4 in an appropriate amount in accordance with the amount or type of laundry, for example. The automatic injection unit 7 has two grooves 70 and 71 arranged in the width direction K (for example, the horizontal direction) and accommodating the liquid, and a pump (not shown) for sucking and discharging the liquid. In the embodiment, tank 70 contains detergent, and tank 71 contains softener. In addition, the automatic injection unit 7 corresponds to an example of the softener supply mechanism of this disclosure, and supplies softener to the washing tub of this disclosure.

The water supply member 10 is a mechanism that supplies water to the detergent supply unit 5 through the flow path member 11 . The water supply member 10 is composed of a plurality of water supply valves 10a, 10b, and 10c, and the water supply destination can be changed by opening and closing the water supply valves 10a, 10b, and 10c. Specifically, when the water supply valve 10a is opened, water is supplied to the boxes 60 and 62. When the water supply valve 10b is opened, water is supplied to the boxes 61 and 63. When the water supply valve 10c is opened, water is supplied to the boxes 61 and 63. Automatic input unit 7. The water supply valves 10a, 10b, and 10c are, for example, solenoid valves. In addition, the water supply valve 10a corresponds to an example of the first water supply valve of the present disclosure that supplies water to the detergent box of the present disclosure, and the water supply valve 10b corresponds to an example of the second water supply valve of the present disclosure that supplies water to the solid agent box of the present disclosure.

The flow path member 11 is a member that guides water supplied from the water supply valves 10a, 10b, and 10c to a supply destination. The flow path member 11 is provided above the boxes 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 a plurality of independent paths F1, F2, and F3 that communicate from the water supply valves 10a, 10b, and 10c to the supply destination.

The water supplied to the boxes 60, 61, 62, and 63 of the manual injection unit 6 flows into the washing tub 4 together with the contained detergent.

Next, the structure of the manual injection unit 6 will be described in more detail with reference to FIGS. 3 to 6 . FIG. 4 is a perspective view showing the structure of the manual injection unit 6 . FIG. 5 is a cross-sectional view showing the structure of the manual insertion unit 6 in a state in which the box 63 and the insertion port members 65 and 66 are removed. FIG. 6 is a perspective view showing the structure of the manual insertion unit 6 in a state in which the box 63 and the insertion opening members 65 and 66 are removed.

As shown in FIG. 3 , the manual injection unit 6 includes a main body 64 . The main body portion 64 is a member held in the unit box 50 so as to be pulled out in the front-rear direction L.

As shown in FIG. 4 , the main body portion 64 accommodates the inlet members 65 and 66 and the box 63 (hereinafter referred to as the tablet box 63 ). The input opening members 65 and 66 and the tablet box 63 are detachably accommodated in the main body 64 .

As shown in FIGS. 4 and 5 , boxes 60 , 61 , and 62 are arranged in the main body 64 in the width direction K, and these boxes contain detergent supplied to the washing tub 4 . As described above, the box 60 (hereinafter, referred to as the lotion box 60) contains lotion, the box 61 (hereinafter, called the softener box 61) contains softener, and the box 62 (hereinafter, referred to as the powder lotion box 62) Contains powder lotion. In the main body 64, the lotion box 60 and the powder lotion box 62 are adjacent to each other. On the other hand, a space 67 is provided between the lotion box 60 and the softener box 61, and the tablet box 63 is arranged in the space 67.

As shown in FIG. 5 , the softener box 61 has a storage space 78 for accommodating softener and a liquid discharge channel 74 . The liquid discharge flow path 74 has a U-shape that extends upward from the suction port 74 a and is folded back at the upper part of the softener box 61 to be connected to the bottom surface 78 a of the accommodating space 78 . When a predetermined amount of water accumulates in the accommodation space 78 , the liquid agent discharge channel 74 sucks the softener from the suction port 74 a and discharges it from the opening 61 a formed in the bottom surface 78 a of the accommodation space 78 . The lotion box 60 has a storage space 77 for accommodating lotion and a liquid discharge channel 73 similar to the liquid discharge channel 74 .

The input port member 65 is arranged in the accommodation space 77 and forms an input port 65a provided for inputting lotion. The input port member 66 is arranged in the accommodation space 78 and forms an input port 66a provided for inputting the softener.

The tablet box 63 is a member that accommodates a water-soluble solid agent used in one sterilization washing course. When water is added to the solid agent, the solid agent is dissolved, and the dissolved solid agent is supplied to the washing tank 4 . In addition, the tablet box 63 is equivalent to an example of the solid dosage box of the present disclosure, and contains a water-soluble, disposable solid dosage of the present disclosure. Solid agents are solid or hollow solids. For example, a solid agent is a solid object formed by compressed and aggregated powder. Solid agents can also be called solid treatment agents. In the embodiment, tablet J will be described as an example of a solid dosage form.

Here, tablet J contains a component that exhibits bactericidal performance. Tablet J contains water-soluble ingredients. Although it has a certain shape before water is supplied, after water is applied, it breaks down into smaller fragments and dissolves in water.

Regarding the constituent materials of Tablet J, Tablet J may contain a component that generates hypochlorous acid. In an embodiment, tablet J contains sodium dichloroisocyanurate as a bactericidal component. Tablet J may also contain ingredients that react with water to form foam.

Regarding the shape of the tablet J, the tablet J may also have a shape that is movable to a predetermined position in the tablet box 63 , for example, has a peripheral shape or contour that can be rolled and moved. In the embodiment, the tablet J has a disk shape with a diameter D0 larger than a thickness T0 (see FIGS. 8A and 8B ).

The tablets J put into the tablet box 63 may be specific tablets J envisaged to be used by the manufacturer of the washing machine 1 . For example, the tablet J may be one or a plurality of specified types of tablet J. For example, the type of tablet J is selected from the catalog or list stored in the control unit C.

The tablet box 63 is formed with an insertion port 63a for inserting the tablet J on the front side L1. As shown in FIG. 4 , when the tablet box 63 is arranged in the main body 64 , the input port 63 a is arranged between the input port 65 a and the input port 66 a arranged in the width direction K. On the other hand, as shown in FIG. 3 , when the main body 64 is pulled out from the unit box 50 , the insertion opening 63 a covers the entire surface and is exposed. The input port 63a may have a vertically long shape.

As shown in FIG. 6 , openings 60 a , 61 a , 62 a and 67 a are provided on the bottom surface 64 a of the main body 64 at positions corresponding to the respective boxes 60 , 61 , 62 and the space 67 . When water is supplied from the water supply member 10 to the respective boxes 60, 61, 62, and 63, the contained detergent flows out toward the washing tub 4 from the respective openings 60a, 61a, 62a, and 67a together with the water.

FIG. 7 is a perspective view showing the structure of the tablet box 63 .

In the embodiment, the tablet box 63 has a single-sided open structure, which is provided with one side wall 80 and the opposite side is open. In the embodiment, the outer side wall 89 of the softener box 61 functions as the other side wall of the tablet box 63 .

As shown in FIG. 7 , the side wall 80 has a mesh 82 penetrating through the thickness direction (width direction K) of the side wall 80 . The dissolved tablet J flows out from the mesh 82 together with water and is supplied to the washing tank 4 .

On one surface of the side wall 80, the peripheral wall 81 is provided so as to protrude in the width direction K (short side direction). The peripheral wall 81 protrudes from the outer peripheral portion of the side wall 80 and forms the front, bottom and back surfaces of the tablet box 63 . The peripheral wall 81 cooperates with the side wall 80 to guide the tablet J that has been put into the input port 63a to the accommodation space K10 on the rear side L2 and accommodate it. The accommodating space K10 is a space accommodating the tablet J when water is supplied.

In addition, the side wall 80 further has a protruding portion 88 protruding in the width direction K. The protruding portion 88 will stably hold the tablet J in the accommodation space K10. In this way, the accommodation space K10 is defined by the peripheral wall 81 and the protruding portion 88 .

The water supply nozzles 12 and 13 of the flow path member 11 are formed in the upper part of the accommodation space K10. The accommodation space K10 is provided directly below the water supply nozzles 12 and 13 . When the tablet J is placed in the accommodation space K10 , the tablet J is dissolved by the water supplied from the water supply nozzles 12 and 13 .

8A and 8B are perspective views showing the shape of tablet J. FIG. As shown in FIGS. 8A and 8B , the tablet J has a disk shape and has a diameter D0 and a thickness T0. FIG. 8A shows a posture in which the tablet J is placed vertically with the thickness direction orthogonal to the insertion direction A2. FIG. 8B shows a posture in which the tablet J is placed laterally with the thickness direction parallel to the insertion direction A2. The vertical position refers to a position in which the size in the vertical direction is larger than the size in the short side direction (for example, the thickness direction) of the tablet J in the horizontal cross section. In the embodiment, the tablet J is inserted into the tablet box 63 in a vertical position.

Here, the water supply to the tablet J will be described.

FIG. 9 is a plan view showing the structure of the detergent supply unit 5 with the cover 50a removed. As shown in FIG. 9 , the three water supply valves 10 a , 10 b , and 10 c (see FIG. 3 ) of the water supply member 10 are respectively connected to the paths F1 , F2 , and F3 of the flow path member 11 . Paths F1, F2, and F3 are formed independently of each other. The path F1 connected to the water supply valve 10a forms a flow path for supplying water to the lotion box 60 and the powder lotion box 62. The path F2 connected to the water supply valve 10b forms a flow path for supplying water to the softener box 61 and the tablet box 63. Path F3 connected to the water supply valve 10 c forms a flow path for supplying water to the automatic injection unit 7 . By supplying water to a plurality of cartridges through one path, the number of water supply valves in the water supply member 10 can be reduced and the structure can be simplified.

The path F2 forms openings 14 and 15 facing the tablet box 63 and a plurality of openings 16 facing the softener box 61 . When the water supply valve 10b is opened and connected to the path F2, water flows into the tablet box 63 through the openings 14 and 15 (see arrow B). On the other hand, the water that exceeds the openings 14 and 15 will flow into the softener box 61 through the opening 16 .

FIG. 10 is a cross-sectional view showing the structure of the detergent supply unit 5 . As shown in FIG. 10 , a water supply nozzle 12 extending downward from the opening 14 and a water supply nozzle 13 extending downward from the opening 15 are provided on the upper part of the tablet box 63 . The water supply nozzles 12 and 13 are arranged in the front-rear direction L and are provided above the accommodation space K10. The water supply nozzles 12 and 13 are cylindrical members, and the water flowing into the openings 14 and 15 is discharged into the tablet box 63 through the water supply nozzles 12 and 13 .

FIG. 11 is a schematic cross-sectional view showing the structure of the tablet box 63 as viewed from the front-rear direction L. As shown in FIG. 11 , water is discharged obliquely downward from the water supply nozzle 12 toward the side wall 80 of the tablet box 63 (see arrow W1 ). Furthermore, water is discharged from the water supply nozzle 13 diagonally downward in the opposite direction toward the outer side wall 89 of the softener box 61 on the opposite side (arrow W2).

The water touches the point P1 in the side wall 80 and the point P2 in the outer wall 89 of the softener box 61 and flows downward along the wall surface. Points P1 and P2 are located above the vertex of the tablet J and at the height of the mesh 82 above the accommodating space K10. After the collision, when the water flows downward along the wall, it will touch the side of the tablet J and be absorbed by the tablet J. Since the water indirectly touches the side of the tablet J after once hitting the side wall 80 , the force and flow rate of the water can be reduced compared to the case where the tablet J is directly touched from the water supply nozzles 12 and 13 . [action]

Next, the operation of the washing machine 1 when executing the sterilization process will be described with reference to FIGS. 12A to 15 . 12A is a sequence diagram showing the flow of processing in the sterilization process, and FIGS. 12B to 12G are sequence diagrams showing the flow of processing in a part of the sterilization process. Fig. 13 is a diagram showing water level changes during the sterilization process. FIG. 14 is a diagram showing the operations of the water supply valves 10a and 10b and the drain valve 9 during the sterilization process. FIG. 15 is a diagram showing the water level of the washing tub 4 .

The sterilization process refers to a washing process performed in order to remove bacteria attached to so-called laundry such as clothes and towels. In one sterilization cycle, use 1 tablet J. It is assumed that after the sterilization process is completed, the tablet J does not remain in the tablet box 63 in the same shape as before being inserted. Therefore, the user will put new tablets J into the tablet box 63 before the next sterilization cycle.

First, the flow of the entire sterilization process will be described with reference to FIG. 12A . As shown in FIG. 12A , in the sterilization process, the control unit C sequentially executes the washing process, the first washing process, the second washing process, and the dehydration process. That is, the cleaning process includes at least a first cleaning process and a second cleaning process performed after the first cleaning process. In the washing process, detergent is supplied to the washing tub 4 , and in the washing process, other liquids, tablets, and the like are supplied to the washing tub 4 . In the embodiment, the tablet J is supplied to the washing tank 4 in the first washing step, that is, in the step before the final washing step. That is, in the first cleaning step, the water supply valve 10b is opened, and the later-described main water supply step S34 of supplying water to the tablet J (solid dosage) is performed. When the softening agent is also supplied, the softening agent is supplied to the washing tub 4 in the second washing step, that is, the final washing step.

First, as a preliminary preparation, the user puts the lotion and one tablet J used for one sterilization course into the manual input unit 6 . The lotion is put into the lotion box 60 through the inlet 65a. The tablet J is inserted into the input port 63a in a vertical position. When using softener, the user confirms that the tank 71 of the automatic insertion unit 7 contains the softener, and if the remaining amount is small, replenishes the tank 71 with softener.

Detergent can also be injected automatically through the automatic injection unit 7 . In the case of automatic injection of detergent, the user confirms that the tank 70 of the automatic injection unit 7 contains detergent, and when the remaining amount is small, the user replenishes the tank 70 with detergent.

Hereinafter, the flow of processing in each process constituting the sterilization process will be described in detail. ＜Laundry process＞

The processing flow of the washing process will be described with reference to FIG. 12B , FIG. 13 and FIG. 14 . First, as shown in FIG. 12B, FIG. 13, and FIG. 14, the control part C determines the water supply amount Q1 of a washing process (step S10). Specifically, the control unit C obtains the weight of the laundry in the washing tub 4 detected by the weight sensor 26, and determines the water supply amount Q1 in accordance with the obtained weight.

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

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

When the water level in the washing tub 4 is smaller than the laundry water level Y1 (NO in step S12), the process returns to step S11.

When the water level in the washing tub 4 is equal to or higher than the laundry water level Y1 (YES in step S12), the control unit C closes the water supply valve 10a (step S13).

Instead of executing the process of step S12, the control unit C may determine the water supply time corresponding to the water supply amount Q1, open the water supply valve 10a, and continue water supply until the determined water supply time elapses.

Next, the control unit C operates the agitation mechanism 8 of the washing tub 4 to perform laundry agitation of the laundry (step S14). Specifically, the control unit C causes the stirring mechanism 8 to perform a reverse rotation operation to perform laundry stirring. Laundry agitation continues for a predetermined time. Washing agitation can also continue until the predetermined number of reversals is reached. Therefore, in the washing process, the washing machine 1 can supply detergent to the washing tub 4 by performing water supply and stirring, thereby washing the laundry.

The control unit C can also open the water supply valve 10a to provide additional water supply during washing agitation.

Next, the flow of processing in the first cleaning step will be described. The first cleaning step includes preparation, lotion cleaning step, sterilization step and tablet cleaning step. Below, description is given in order. <1st cleaning step: preparation>

First, as shown in FIG. 12C , FIG. 13 and FIG. 14 , the control unit C executes preparations for the first cleaning process (steps S15 to S17 ).

First, the control unit C opens the drain valve 9 to drain a predetermined amount of water and lotion (step S15).

Next, the control part C determines whether the water level of the washing tub 4 is lower than the minimum water level Y0 (step S16). Specifically, the control unit C obtains the water level detected by the water level sensor 25 and compares the water level with the lowest water level Y0 to make a determination. As shown in FIG. 15 , the minimum water level Y0 refers to a water level that is 10% or less of the maximum water level of the washing tub 4 . Moreover, the water level in the state where water is not contained in the washing tub 4 may be set as the minimum water level Y0.

When the water level of the washing tub 4 is greater than the minimum water level Y0 (NO in step S16), the process returns to step S15.

When the water level in the washing tub 4 is equal to or lower than the minimum water level Y0 (YES in step S16), the control unit C closes the drain valve 9 (step S17). Here, the control unit C may also perform intermediate dehydration. <1st cleaning step: detergent cleaning step>

Next, as shown in FIG. 12D , FIG. 13 and FIG. 14 , the control unit C executes the detergent cleaning step of the first cleaning step (steps S20 to S27 ). The detergent washing step is performed to wash the detergent that has been put into the washing tub 4 in the washing process from the laundry.

First, the control unit C opens the water supply valve 10a and supplies a predetermined amount of water to the path F1 (step S20). The water passes through the path F1 and is supplied to the washing tub 4 via the detergent box 60 . Since the detergent that has been put into the detergent box 60 in advance is used in the washing process, in step S20 , water is supplied to the washing tub 4 via the empty detergent box 60 .

Next, the control unit C determines whether the water level of the washing tub 4 is equal to or higher than the detergent washing water level Y2 (step S21). Specifically, the control unit C obtains the water level detected by the water level sensor 25 and compares the water level with the detergent washing water level Y2 to make a determination. As shown in FIG. 15 , the detergent wash water level Y2 is assumed to be the water level required to immerse the laundry in water. The control unit C can also obtain the weight of the laundry in the washing tub 4 detected by the weight sensor 26, and determine the detergent washing water level Y2 according to the obtained weight. For example, the detergent wash water level Y2 is a water level at which the liquor ratio becomes 10 L/kg in response to the weight of the laundry obtained by the control unit C. In addition, the detergent wash water level Y2 is a water level that is at least higher than the water level in a state where water is not contained in the washing tub 4 .

When the water level of the washing tub 4 is smaller than the detergent washing water level Y2 (NO in step S21), the process returns to step S20.

When the water level of the washing tub 4 is equal to or higher than the detergent washing water level Y2 (YES in step S21), the control unit C closes the water supply valve 10a (step S22). Therefore, water above the detergent washing water level Y2 is accommodated in the washing tub 4 .

Next, the control unit C opens the water supply valve 10b and supplies a small water supply amount to the path F2 (hereinafter referred to as preliminary water supply step S23). By this action, the tablet J becomes moist and becomes easy to dissolve. The water flows into the tablet box 63 through the path F2 and indirectly touches the tablet J as shown in FIG. 11 . A small water supply amount means an amount of water supply that moistens the surface of the tablet J, but is not sufficient to dissolve the tablet J and cause it to flow out of the tablet box 63 .

Here, the water supply amount in the preliminary water supply step S23 is smaller than the water supply amount in the subsequent main water supply step S34. In the preliminary water supply step S23, the small amount of water supply 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 through the water supply valve 10b may be 5 L/min or more and 15 L/min or less. About 15% of the water supplied from the water supply valve 10b is distributed to the tablet box 63, and for example, 50 mL or more and 200 mL or less of water flows into the tablet box 63. For example, when 1000 mL of water is supplied from the water supply valve 10 b at 12 L/min for 5 seconds, 140 mL of water flows into the tablet box 63 . The water supply time can be less than 10 seconds, preferably about 5 seconds.

By performing the preliminary water supply step S23 with the water level of the washing tub 4 being higher than the detergent rinse water level Y2, even if the tablet J dissolves and flows into the washing tub 4, it is possible to prevent the tablet J from adhering to the washing machine. condition of things. Therefore, the washing machine 1 can suppress discoloration of the laundry.

Next, the control unit C closes the water supply valve 10b and starts the waiting time (step S24). The waiting time is the time during which the water supply from the water supply valve 10b to the path F2 is stopped. For example, the standby time is more than 20 seconds. On the other hand, the control unit C performs other operations such as water supply, drainage, and stirring from the water supply valve 10a during the standby time.

By setting the standby time, the washing machine 1 can ensure the time for the wet tablet J to foam in the preliminary water supply step S23. Furthermore, the washing machine 1 can ensure the time for the water to be supplied to be supplied further to penetrate from the surface of the tablet J to the inside. Tablet J that has been foamed or tablet J that has water penetrated inside becomes easily soluble in water. By performing the main water supply step S34 on the easily soluble tablet J, the tablet J can be easily and completely dissolved compared to the case where the main water supply step S34 is performed without performing the preliminary water supply step S23.

Next, the control unit C opens the drain valve 9 to drain the predetermined amount of water and lotion (step S25).

Next, the control unit C determines whether the water level of the washing tub 4 is equal to or lower than the minimum water level Y0 (step S26). Specifically, the control unit C obtains the water level detected by the water level sensor 25 and compares the water level with the lowest water level Y0 to make a determination.

When the water level of the washing tub 4 is greater than the minimum water level Y0 (NO in step S26), the process returns to step S25.

When the water level in the washing tub 4 is lower than the minimum water level Y0 (YES in step S26), the control unit C closes the drain valve 9 (step S27) and ends the detergent washing step. Therefore, in the detergent washing step, the detergent can be washed away from the laundry more reliably, and the tablet J can be made moist and easily dissolved. <1st cleaning step: sterilization step>

Next, as shown in FIG. 12E, FIG. 13, and FIG. 14, the control unit C executes the sterilization step of the first cleaning process (steps S30 to S42). The sterilization step is performed to supply the tablets J put into the tablet box 63 to the washing tub 4 and to sterilize the laundry.

First, the control unit C opens the water supply valve 10a and supplies a predetermined amount of water to the path F1 (step S30). The water passes through the path F1 and is supplied to the washing tub 4 via the empty detergent box 60 .

Next, the control unit C determines whether the water level in the washing tub 4 is equal to or higher than the pre-sterilization water level Y3 (step S31). Specifically, the control unit C obtains the water level detected by the water level sensor 25 and compares the water level with the pre-sterilization water level Y3 to make a determination. The water level Y3 before sterilization is assumed to be higher than the water level required to immerse the laundry in water. The water level Y3 before sterilization is a water level at which the liquor ratio becomes 10L/kg or more according to the weight of the laundry obtained by the control unit C. In the embodiment, the pre-sterilization water level Y3 is higher than the laundry water level Y1 and the detergent washing water level Y2. In addition, the pre-sterilization water level Y3 may also be equal to the laundry water level Y1 or the detergent washing water level Y2. In addition, the pre-sterilization water level Y3 is at least a higher water level than the water level in a state where water is not contained in the washing tub 4 .

When the water level in the washing tub 4 is smaller than the pre-sterilization water level Y3 (NO in step S31), the process returns to step S30.

When the water level in the washing tub 4 is equal to or higher than the pre-sterilization water level Y3 (YES in step S31), the control unit C closes the water supply valve 10a (step S32).

Next, the control unit C determines whether the waiting time has elapsed (step S33).

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

When the waiting time has elapsed (YES in step S33), the control unit C executes the main water supply step S34. In the actual water supply step S34, with the water supply valve 10a closed, the control unit C opens the water supply valve 10b to supply water to the path F2. The water flows into the tablet box 63 through the path F2 and indirectly touches the tablet J as shown in FIG. 11 . Since the water supply amount is larger than that in the preliminary water supply step S23, the tablet J is dissolved. The dissolved tablet J will be supplied to the washing tank 4 through the mesh 82 together with water.

The water supply amount in the main water supply step S34 may be 30 L of water supply, or may be water supply for 120 seconds or more, for example, 30 times the water supply amount in the preliminary water supply step S23. In the embodiment, the flow rate of water supplied by opening the water supply valve 10b is smaller than the flow rate of water supplied by opening the water supply valve 10a. With this configuration, the water supply time for a predetermined water supply amount can be extended. Therefore, the time that the water comes into contact with the tablet J can be extended, and the tablet J can be easily dissolved. In addition, the flow rate of water supplied by opening the water supply valve 10b may be greater than the flow rate of water supplied by opening the water supply valve 10a.

In the main water supply step S34, the control unit C operates the stirring mechanism 8 of the washing tub 4 to further perform main water supply stirring of the laundry. Specifically, the control unit C causes the stirring mechanism 8 to perform a reverse operation to perform main water supply stirring. In addition, the actual water supply stirring corresponds to an example of the first stirring in this disclosure. In addition, in the embodiment, the control unit C continues the main water supply stirring for a predetermined time after the main water supply step S34 is completed. Through this action, Tablet J will act on the laundry evenly, and can cover a wide range to bring about sterilization effect.

Next, the control unit C determines whether the water level in the washing tub 4 is equal to or higher than the water level Y4 during sterilization (step S35). Specifically, the control unit C obtains the water level detected by the water level sensor 25 and compares the water level with the water level Y4 during sterilization to make a determination. As shown in Figures 13 and 15, the water level Y4 during sterilization is higher than the laundry water level Y1, the detergent washing water level Y2, and the water level Y3 before sterilization. By this operation, it is possible to prevent the dissolved substance of the tablet J from being suspended in the water supplied to the washing tub 4 and causing the dissolved substance of the tablet J to adhere to the laundry. By suppressing the dissolution of Tablet J from adhering to the laundry for a long time, damage or discoloration of the laundry can be suppressed. Moreover, in the washing tank 4, by increasing the amount of water for the dissolved material of the tablet J, the tablet J becomes easier to dissolve.

When the water level in the washing tub 4 is lower than the water level Y4 during sterilization (NO in step S35), the control unit C performs a small amount of additional water supply through the water supply valve 10b, and executes step S35 again. A small amount of additional water supply refers to, for example, 0.3L of water supply.

When the water level in the washing tub 4 is equal to or higher than the water level Y4 during sterilization (YES in step S35), the control unit C closes the water supply valve 10b (step S36).

Next, the control unit C determines whether the water supply conditions are such that the tablet J is not easily soluble. If the water supply conditions are such that the tablet J is not easily soluble, additional steps (steps S37 to S42) are performed after the actual water supply step S34. Conditions for tablet J to be difficult to dissolve include a large flow rate of the water supply and a low temperature of the water supply.

Then, first, the control unit C determines the flow rate of water supplied through the water supply valve 10b (step S37). Specifically, the control unit C divides the increase in the water level detected by the water level sensor 25 by the time it takes for the increase in the water level to calculate the water supply flow rate.

Next, the control unit C determines whether the calculated water supply flow rate is larger than a predetermined flow rate (step S38).

When the water supply flow rate is larger than the predetermined flow rate (YES in step S38), the control unit C executes additional water supply to the tablet box 63 (step S39). Specifically, after opening the drain valve 9 to drain a small amount of water, the control unit C closes the drain valve 9 and opens the water supply valve 10 b to feed a small amount of water to the tablet box 63 . A small amount of additional water supply refers to, for example, 5L of water supply. By this operation, it is possible to prevent the water level in the washing tub 4 from rising excessively and to prevent the tablets J from remaining dissolved in the tablet box 63 .

When the water supply flow rate is smaller than the predetermined flow rate (NO in step S38), the flow proceeds to step S40.

Next, the control unit C determines the water temperature of the water supplied to the washing machine 1 (step S40). Specifically, the control unit C obtains the water supply water temperature detected by the water temperature sensor 27 .

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

When the supply water temperature is lower than 10° C. (YES in step S41 ), the control unit C operates the stirring mechanism 8 of the washing tub 4 while operating the heater 28 to add laundry. Stir (step S42). Specifically, in a state where the heater 28 is heating, the control unit C causes the stirring mechanism 8 to perform a reverse rotation operation to perform additional stirring. In addition, this additional stirring corresponds to an example of the 2nd stirring of this disclosure.

Furthermore, in step S42, the control unit C further performs additional water supply to the tablet box 63 (step S39). In addition, when the water supply temperature is lower than 10°C ("Yes" in step S41) and when the water supply flow rate is smaller than the predetermined flow rate ("No" in step S38), the control unit C may Additional water supply to the tablet box 63 is performed (step S39).

When the supply water temperature is higher than 10°C (NO in step S41), the control unit C ends the sterilization step. Therefore, in the sterilization step, by performing water supply to dissolve the tablet J and supplying it to the washing tub 4, it is possible to prevent the incompletely dissolved tablet J in the washing tub 4 from adhering to the laundry while washing the laundry. Sterilize. <1st cleaning step: Tablet cleaning step>

Next, as shown in FIG. 12F , FIG. 13 and FIG. 14 , the control unit C executes the tablet cleaning step of the first cleaning step (steps S50 to S53 ). The tablet washing step is performed to wash the tablets J that have been put into the washing tank 4 in the sterilization step.

The control unit C opens the drain valve 9 to drain the predetermined amount of water and the dissolved matter of the tablet J (step S50).

Next, the control unit C determines whether the water level in the washing tub 4 is equal to or lower than the tablet washing water level Y5 (step S51). The tablet cleaning water level Y5 is higher than the lowest water level Y0.

When the water level in the washing tub 4 is greater than the tablet washing water level Y5 (NO in step S51), the process returns to step S50.

When the water level in the washing tub 4 is equal to or lower than the tablet washing water level Y5 (YES in step S51), the control unit C closes the drain valve 9 (step S52). It is assumed that in this state, a certain water level higher than the minimum water level Y0 is maintained in the washing tub 4 .

Next, the control unit C opens the water supply valve 10b, supplies a predetermined amount of water to the path F2, and closes the water supply valve 10b (step S53). Since water is supplied to the washing tub 4, components of the tablet J remaining on laundry such as clothes can be washed away. In addition, since water is supplied through the path F2, the water flows into the tablet box 63, and the tablet J that remains dissolved can be further washed out. ＜Second cleaning process＞

Next, as shown in FIGS. 12G, 13, and 14, in the second cleaning step, the control unit C opens the drain valve 9 to drain a predetermined amount of water (step S54). Here, the control unit C may also perform intermediate dehydration.

Next, the control unit C determines whether the water level of the washing tub 4 is equal to or lower than the minimum water level Y0 (step S55).

When the water level of the washing tub 4 is greater than the minimum water level Y0 (NO in step S55), the process returns to step S54.

When the water level in the washing tub 4 is lower than the minimum water level Y0 (YES in step S55), the control unit C closes the drain valve 9 (step S56). Thereby, the washing machine 1 can wash the tablet J from the laundry more reliably, and discharge the water containing the tablet J from the washing tub 4 .

Next, the control unit C intermittently opens the water supply valve 10b a plurality of times to supply water to the path F2 (step S60). Specifically, the control unit C repeats opening and closing of the water supply valve 10b at constant intervals over a certain period of time to supply water to the path F2. By this operation, water intermittently flows into the tablet box 63 through the path F2, and the cleaning of the tablet box 63 can be promoted by changes in the flow rate of the inflowing water.

At the same time, the control unit C executes supply of the softener. The softener is supplied not by the manual injection unit 6 but by the automatic injection unit 7 . Since the manually inserted softener box 61 and the tablet box 63 share the path F2, if you want to supply softener through the manual input unit 6, it will be difficult to supply the softener and tablets J separately, and there may be There is a risk of mixing softeners and tablets. When softener is mixed with Tablet J, Tablet J becomes less likely to work as intended. On the other hand, if the softener and the tablet J can be fed separately, the tablet J can be supplied to the washing tank 4 in the first cleaning step, and the tablet J can be supplied to the washing tank 4 in the final cleaning step (that is, the second cleaning step). Supply softener to washing tank 4. Since the laundry can be washed in the second cleaning step after the tablet J is supplied in the first cleaning step, adhesion of the tablet J to the laundry can be further suppressed. Since the dehydration process can be started immediately after supplying the softening agent to the washing tub 4, compared with a case where a washing process is provided after supply, the components and aroma attached to the laundry can be maintained. Therefore, the control part C supplies the softener by activating the automatic injection unit 7 .

Next, the control unit C determines whether the water level in the washing tub 4 is equal to or higher than the final washing water level Y6 (step S61). The final cleaning water level Y6 is lower than the water level Y4 during sterilization.

When the water level in the washing tub 4 is lower than the final wash water level Y6 (NO in step S61), the control unit C performs a small amount of additional water supply through the water supply valve 10b and executes step S61 again.

When the water level of the washing tub 4 is equal to or higher than the tablet washing water level Y5 (YES in step S61), the control unit C closes the water supply valve 10b (step S62).

Next, the control unit C operates the stirring mechanism 8 of the washing tub 4 to stir the laundry (step S63). ＜Dehydration process＞

Next, in the dehydration step, the control unit C drains the water in the washing tub 4 to dehydrate the laundry (step S70). After that, the control unit C ends the sterilization process. [Summary]

The above description is integrated to describe the characteristics of this disclosure.

The washing machine 1 according to the embodiment includes a tablet box 63 for manually inserting tablets J for sterilization, a lotion box 60 and a softener box 61 . It is used for manually adding liquid.

Since Tablet J is a solid treatment agent for sterilization, when mixed with other detergents in the washing tank 4, there is a risk that the sterilization performance of Tablet J may be reduced due to mutual chemical interaction. Therefore, it is preferable to supply tablet J at different times from other detergents. In this disclosure, detergent is supplied to the washing tub 4 in the washing process, tablet J is supplied to the washing tub 4 in the first washing process, and softener is supplied to the washing tub 4 in the second washing process. The tank 4 and the washing machine 1 can prevent the detergents from mixing and causing adverse effects on each other.

In addition, by performing the tablet washing step and the second washing step after supplying the tablet J in the first washing step, it is possible to prevent the tablet J from adhering to the laundry for a long time. Therefore, the washing machine 1 can prevent the laundry from being damaged or discoloration of the laundry due to the chemical action of the tablet J. [Effect]

According to the washing machine 1 of the embodiment, the following effects can be exerted.

As described above, the washing machine 1 of this embodiment is configured so that disposable tablets J (solid tablets) having water solubility can be inserted. The washing machine 1 includes a washing tub 4, a detergent box 60, a tablet box 63 (solid agent box), a water supply valve 10a (a first water supply valve), a water supply valve 10b (a second water supply valve), and a control unit C. The washing tub 4 is rotatably arranged in the housing 2 . The detergent box 60 stores the detergent supplied to the washing tub 4 . The tablet box 63 accommodates the tablets J supplied to the washing tub 4 . The water supply valve 10a supplies water to the lotion box 60. The water supply valve 10b supplies water to the tablet box 63. The control unit C controls the water supply valve 10a and the water supply valve 10b. In the washing process, the control unit C opens the water supply valve 10a (step S11) and closes the water supply valve 10b (step S13). Furthermore, in the washing process after the washing process, the control unit C opens the water supply valve 10b and executes the main water supply step S34 of supplying water to the tablet J.

With this structure, the washing machine 1 of this embodiment can perform the water supply to the detergent box 60 and the water supply to the tablet box 63 in different processes. Therefore, the solution of the lotion and the tablet J is supplied to the washing tank 4 at different time points. Therefore, the mixing of the lotion and the tablet J can be suppressed, and the effect of the tablet J can be improved. That is, the washing machine 1 of this embodiment can improve the sterilization performance of laundry.

Furthermore, in the washing machine 1 of this embodiment, the washing process includes at least a first washing process and a second washing process performed after the first washing process, and the control unit C turns on the water supply during the first washing process. Valve 10b.

With this configuration, the tablet J is supplied to the washing tank 4 in the first cleaning step. By subsequently performing the second washing step, the tablet components remaining in the laundry in the second washing step can be washed away. By washing the tablet components more reliably, the washing machine 1 of this embodiment can suppress the discoloration of the laundry.

Furthermore, in the washing machine 1 of this embodiment, the control unit C opens the water supply valve 10a before opening the water supply valve 10b, and supplies water to the washing tub 4 above the pre-sterilization water level Y3 (predetermined amount).

With this configuration, the tablet J can be supplied in a state where the water at the pre-sterilization water level Y3 has been accumulated in the washing tub 4 . Therefore, the concentration of the tablet J in the washing tub 4 can be suppressed within an appropriate range, and the washing machine 1 of this embodiment can suppress the tablet component from directly contacting the laundry, causing the laundry to become discolored.

In addition, in the washing machine 1 of this embodiment, the pre-sterilization water level Y3 (predetermined amount) is the water level at which the water level in the washing tub 4 reaches the following level: the water level of the laundry accommodated in the washing tub 4 is submerged, and the liquor ratio becomes 10 L /kg or above, or the same water level as the washing process (washing water level Y1).

With this structure, the washing machine 1 of this embodiment can suppress the tablet components from directly contacting the laundry and causing the laundry to discolor.

Furthermore, the washing machine 1 of this embodiment further includes a stirring mechanism 8 for stirring the laundry accommodated in the washing tub 4, and the control unit C opens the water supply while driving the stirring mechanism 8 to perform actual water supply stirring (first stirring). Valve 10b.

With this configuration, the dissolved substance of tablet J containing fragments can be diffused to the entire washing tub 4 to be diluted without remaining on the laundry for a long time. Therefore, the washing machine 1 of this embodiment can suppress the occurrence of Decolorization of laundry.

Furthermore, the washing machine 1 of this embodiment further has a drain valve 9 for draining the water in the washing tub 4 . The control unit C opens the water supply valves 10a, 10b and the drain valve 9 so that the water level Y4 during sterilization (the highest water level) of the washing tub 4 in the first washing process (the washing process including the main water supply step) becomes higher than the washing water level Y4. The washing water level Y1 (the highest water level) of the washing tub 4 in the process is larger.

With this structure, the washing machine 1 of this embodiment can supply more water to the washing tub 4 in the first washing step of supplying the tablet J while suppressing the overall water supply amount. Therefore, the washing machine 1 of this embodiment can secure a large space between the laundry in the water and suppress the adhesion of the tablet J. Furthermore, since the concentration of the components of the tablet J can be diluted, the washing machine 1 of this embodiment can suppress fading.

Furthermore, the washing machine 1 of this embodiment has a drain valve 9 for draining the water in the washing tub 4 . The control unit C opens the water supply valves 10a, 10b and the drain valve 9 so that the water level Y4 (the highest water level) during sterilization of the washing tank 4 in the first washing step becomes higher than that of the washing tank 4 in the second washing step. The final wash water level Y6 (the highest water level) is larger.

With this structure, the washing machine 1 of this embodiment can supply more water to the washing tub 4 in the first washing step of supplying the tablet J while suppressing the overall water supply amount. Therefore, the washing machine 1 of this embodiment can secure a large space between the laundry in the water and suppress the adhesion of the tablet J. Furthermore, since the concentration of the components of the tablet J can be diluted, the washing machine 1 of this embodiment can suppress fading.

Moreover, the washing machine 1 of this embodiment further has the automatic insertion unit 7 (softening agent supply mechanism) which supplies softening agent to the washing tub 4. In the second washing step, the control unit C drives the automatic insertion unit 7 to supply softening agent to the washing tub 4 .

With this structure, the tablet J and the softener can be put into the washing tub 4 separately. Therefore, the washing machine 1 of this embodiment can suppress the mixing of the tablet J and the softener, thereby improving the effect of the softener on the laundry.

Moreover, the washing machine 1 of this embodiment further has the water temperature sensor 27 (water temperature detection part) which detects the water temperature of the water supplied to the washing tub 4. In the first cleaning process (the cleaning process including the actual water supply step), the control unit C drives the stirring mechanism 8 to further perform additional stirring (second stirring) in response to the water temperature detected by the water temperature sensor 27 .

With this configuration, even under conditions where the water temperature is low and the tablet J is difficult to dissolve, the washing machine 1 of the present embodiment can dissolve the fine particles of the tablet J supplied to the washing tub 4 by performing additional stirring.

Moreover, the washing machine 1 of this embodiment has the water temperature sensor 27 which detects the water temperature of the water supplied to the washing tub 4, and further has the heater 28 which heats the water supplied to the washing tub 4. In the first cleaning process (the cleaning process including the actual water supply step), the control unit C executes heating by the heater 28 in response to the water temperature detected by the water temperature sensor 27 .

With this structure, even under conditions where the water temperature is low and the tablet J is difficult to dissolve, the washing machine 1 of this embodiment can dissolve the fine particles of the tablet J supplied to the washing tub 4 by heating.

Moreover, the washing machine 1 of this embodiment has the water temperature sensor 27 which detects the water temperature of the water supplied to the washing tub 4. In the first cleaning process (the cleaning process including the actual water supply step), the control unit C opens the water supply valve 10b to perform additional water supply in response to the water temperature detected by the water temperature sensor 27 (step S39).

With this configuration, even under conditions where the water temperature is low and the tablet J is not easily dissolved, the washing machine 1 of the present embodiment can still increase the water supply amount to the tablet box 63 by executing additional water supply, thereby dissolving the tablet J. It is completely dissolved and the tablet J in the tablet box 63 is suppressed from remaining dissolved. Therefore, the washing machine 1 of this embodiment can prevent fragments of the tablet J from remaining in the tablet box 63 after the washing operation is completed.

Moreover, the washing machine 1 of this embodiment further has the water level sensor 25 (flow rate detection part) which detects the flow rate of the water supplied to the washing tub 4. In the first cleaning process (the cleaning process including the actual water supply step), the control unit C opens the water supply valve 10b to perform additional water supply in response to the flow rate calculated based on the water level detected by the water level sensor 25 (step S39 ).

With this configuration, even under conditions where the flow rate is high and the tablet J is difficult to dissolve, the washing machine 1 of this embodiment can still increase the water supply amount to the tablet box 63 by performing additional water supply, thereby completely dissolving the tablet J. It dissolves and suppresses the tablet J in the tablet box 63 from remaining dissolved. Therefore, the washing machine 1 of this embodiment can prevent fragments of the tablet J from remaining in the tablet box 63 after the washing operation is completed.

Furthermore, in the washing machine 1 of this embodiment, the control unit C intermittently opens the water supply valve 10b a plurality of times in the second washing step (step S60).

With this configuration, the washing machine 1 of this embodiment can completely dissolve the tablets J while suppressing the amount of water supplied to the tablet box 63 by repeatedly supplying water to the tablet box 63 , thereby suppressing the amount of water in the tablet box 63 . Dissolved residue of Tablet J. Therefore, the washing machine 1 of this embodiment can prevent fragments of the tablet J from remaining in the tablet box 63 after the washing operation is completed.

Furthermore, in the washing machine 1 of this embodiment, the first washing process (the washing process including the main water supply step) includes a preliminary water supply step S23, a standby step S24, and a main water supply step S34. The preliminary water supply step S23 is a step of supplying water to the tablet J through the water supply valve 10b. The waiting step S24 is a step of stopping the water supply by the water supply valve 10b after the preliminary water supply step S23. The main water supply step S34 is a step of supplying water to the tablet J that has undergone the preliminary water supply step S23 after the standby step S24. The water supply amount in the preliminary water supply step S23 is smaller than the water supply amount in the main water supply step S34.

With this structure, before the actual water supply step S34 for dissolving the tablet J, the tablet J is moistened in the preliminary water supply step S23, foams during the waiting time, and becomes easily dissolved. Therefore, it becomes very easy to completely dissolve the tablet J through the actual water supply step S34. Therefore, the washing machine 1 of this embodiment can suppress the incompletely dissolved tablet J from remaining in the tablet box 63 after the main water supply step S34.

In the washing machine 1 of this embodiment, the preliminary water supply step S23 is executed in a state where the water level in the washing tub 4 is equal to or higher than the detergent washing water level Y2 (predetermined water level).

With this configuration, even when the tablet J is dissolved and flows into the washing tub 4 in the preliminary water supply step S23, the washing machine 1 of the present embodiment can prevent the fragments of the tablet J from being suspended in the water and adhering to the laundry. situation. Therefore, the washing machine 1 of this embodiment can suppress the discoloration of the laundry.

Furthermore, the washing machine 1 of this embodiment has a drain valve 9 for draining the water in the washing tub 4 . The first cleaning process (the cleaning process including the main water supply step) includes a detergent cleaning step (steps S20 to S27), a preliminary water supply step S23, a standby step S24, and a main water supply step S34. The detergent cleaning step (steps S20 to S27) is performed before the actual water supply step S34. The preliminary water supply step S23 is a step of supplying water to the tablet J through the water supply valve 10b. The waiting step S24 is a step of stopping the water supply by the water supply valve 10b after the preliminary water supply step S23. The main water supply step S34 is a step of supplying water to the tablet J that has undergone the preliminary water supply step S23 after the standby step S24. In the detergent washing step, the control unit C opens the water supply valve 10a to perform water supply (step S20), and then opens the drain valve 9 to perform water drainage (step S25).

With this configuration, after the washing process, the detergent can be discharged from the washing tub 4 before the tablet J is supplied to the washing tub 4, that is, before the actual water supply step S34. Therefore, the washing machine 1 of this embodiment can suppress the mixing of the detergent and the tablet J and improve the effect of the tablet J.

Furthermore, the washing machine 1 of this embodiment has a drain valve 9 for draining the water in the washing tub 4 . The first cleaning process (the cleaning process including the main water supply step) includes a preliminary water supply step S23, a waiting step S24, a main water supply step S34, and a tablet cleaning step (steps S50 to S53). The preliminary water supply step S23 is a step of supplying water to the tablet J through the water supply valve 10b. The waiting step S24 is a step of stopping the water supply by the water supply valve 10b after the preliminary water supply step S23. The main water supply step S34 is a step of supplying water to the tablet J that has undergone the preliminary water supply step S23 after the standby step S24. The tablet cleaning step (steps S50 to S53) is performed after the actual water supply step S34. After executing the tablet washing step, the control unit C opens the drain valve 9 and performs drainage (step S54) so that the lowest water level Y0 (water level) immediately after the tablet washing step becomes higher than that in the tablet washing step. The tablet cleaning water level Y5 (water level) is lower.

With this configuration, the tablet J can be discharged from the washing tub 4 after the main water supply step S34. Alternatively, the water supply may be started before the water supply amount in the actual water supply step S34 is completely drained, and the water in the washing tub 4 may be drained after the tablet washing step. Therefore, the washing machine 1 of this embodiment can more reliably discharge the tablet J from the washing tub 4 while suppressing the water supply amount.

Moreover, the washing method of this embodiment is a washing method performed by the washing machine 1 in which the disposable tablet J (solid agent) which has water solubility is put in. The washing machine 1 includes a washing tub 4, a detergent box 60, a tablet box 63 (solid agent box), a water supply valve 10a (a first water supply valve), and a water supply valve 10b (a second water supply valve). The washing tub 4 is rotatably arranged in the housing 2 . The detergent box 60 stores the detergent supplied to the washing tub 4 . The tablet box 63 accommodates the tablets J supplied to the washing tub 4 . The water supply valve 10a supplies water to the lotion box 60. The water supply valve 10b supplies water to the tablet box 63. The washing method includes opening the water supply valve 10a and closing the water supply valve 10b during the washing process. Furthermore, the washing method includes opening the water supply valve 10b and executing the main water supply step S34 of supplying water to the tablet J in the washing process after the washing process.

By this method, the washing machine 1 can perform water supply to the detergent box 60 and water supply to the tablet box 63 in different processes. Therefore, the solution of the lotion and the tablet J is supplied to the washing tank 4 at different time points. That is, the laundry method of this embodiment can improve the sterilization performance of laundry.

In addition, the present disclosure is not limited to the above-described embodiment, and can be implemented in various other forms.

In addition, although the example in which the washing machine 1 is a vertical washing machine has been demonstrated, it is not limited to this. For example, the washing machine 1 may be a drum-type washing machine.

In addition, the washing machine 1 may also be a washing machine with a drying function. In this case, the washing machine 1 further has a drying device that circulates dry air in the washing tub 4 . In this case, the structure of the manual input unit 6 may be changed according to the arrangement of the drying device.

In addition, although the example of using Tablet J which exhibits sterilizing performance as a solid agent has been described, the solid agent is not limited to this and may provide various functionalities other than sterilizing performance to laundry (for example, fragrant) things.

In addition, the example in which the tablet J contains sodium dichloroisocyanurate has been described, but the tablet J is not limited to this. Tablet J may also contain other dichloroisocyanuric acid salts such as potassium dichloroisocyanurate. Moreover, when the tablet J of the dichloroisocyanuric acid salt different from the sodium dichloroisocyanurate is put in, the tablet J may be put in the washing tank 4 at the same time as the softener.

In addition, although the example in which the detergent supply unit 5 has the automatic insertion unit 7 has been described, it is not limited to this, and the detergent supply unit 5 may only have the manual insertion unit 6 .

In addition, although the example in which the detergent is accommodated in the detergent box 60 has been demonstrated, it is not limited to this. For example, the detergent box 60 may contain bleach.

In addition, although the example in which the tablet J has a disk shape and is inserted into the tablet box 63 in the vertical orientation has been described, the invention is not limited to this. For example, the tablet J can also have other shapes, and the input port 63a can be designed to match the shape of the tablet J. In addition, the shape of the insertion opening 63a may be changed so that the tablet J can be inserted into the tablet box 63 in the horizontal position.

In addition, in the embodiment, the example in which the washing machine 1 has the mesh 82 has been described, but the invention is not limited to this. The washing machine 1 may also have a drainage part with a plurality of water holes or something that forms a water area instead of the mesh 82 .

In addition, although the example in which the tablet box 63 has a one-sided open structure has been demonstrated, it is not limited to this. For example, the tablet box 63 may also have a cover facing the side wall 80 , and the cover may be removed from the tablet box 63 . On the other hand, the tablet box 63 with a one-sided open structure according to the embodiment can be manufactured more easily.

In addition, although the example in which the water supply nozzles 12 and 13 have a straight part was demonstrated, it is not limited to this. For example, the water supply nozzles 12 and 13 may also extend obliquely from the openings 14 and 15 .

In addition, although the example in which the path F2 of the softener box 61 and the tablet box 63 is common has been demonstrated, it is not limited to this. The water supply path of the softener box 61 and the water supply path of the tablet box 63 can also be provided independently.

In addition, as an example of the process of dissolving the water-soluble solid agent and supplying it to the washing tub 4, the sterilization process has been described, but the process is not limited to this. The course is not limited to a course for sterilizing, but may be a course for various functions such as imparting fragrance to laundry.

In addition, although the example in which the sterilization course includes the two cleaning processes of a 1st cleaning process and a 2nd cleaning process has been demonstrated, it is not limited to this. The sterilization process can also include more than 3 cleaning processes. One or more cleaning processes may be provided before the first cleaning process. Alternatively or in addition, one or a plurality of cleaning processes may be provided between the first cleaning process and the second cleaning process. In addition, one or a plurality of cleaning processes may be provided after the second cleaning process. In this case, the main water supply step S34 is performed in the washing process immediately before the final washing process, and the softening agent is supplied in the final washing process. With this structure, in the final washing step, the fragments of the tablet J attached to the laundry can be more reliably washed away, and the adhesion of the softener component can be maintained.

In addition, although the example in which the water supply valve 10b is closed during a washing process has been demonstrated, it is not limited to this. For example, the water supply valve 10b may be opened during the washing process to perform preliminary water supply.

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

In addition, although the example in which the stirring mechanism 8 is a rotating disk has been demonstrated, it is not limited to this. The washing machine 1 may also have a circulation pump, a rotating mechanism of the water tank 3 and other mechanisms that can stir the water in the washing tank 4 as the stirring mechanism 8 . In addition, the stirring mechanism 8 may also perform rotation in one direction instead of the reverse rotation. When the washing machine 1 is an upright washing machine, the washing machine 1 can suppress the displacement of the laundry in the washing tub 4 by causing the stirring mechanism 8 to perform reverse rotation.

In addition, although the example in which the washing machine 1 has the heater 28 was demonstrated, it is not limited to this. The washing machine 1 may also have a warm air unit that supplies warm air into the washing tub 4 in place of the heater 28 or in addition to the heater 28 .

In addition, although the example in which the control part C determines the water supply flow rate based on the water level measured by the water level sensor 25 was demonstrated, it is not limited to this. For example, the washing machine 1 may have a flow meter connected to the water supply member 10 in addition to the water level sensor 25 .

In addition, although the example in which the control part C performs heating, additional stirring, etc. is demonstrated under conditions in which the tablet J is difficult to dissolve, it is not limited to this. For example, when the water temperature is high, the control unit C may also perform heating or additional stirring.

In addition, although the example in which the control part C executes the additional process (steps S37-S42) after the main water supply step S34 was demonstrated, it is not limited to this. The additional steps (steps S37 to S42) may be executed before the actual water supply step S34.

In addition, although the detergent washing step is described as an example consisting of steps S20 to S27, the detergent washing step may be a step that does not include the preliminary water supply step S23 and the standby step S24. That is, the first cleaning process (the cleaning process including the main water supply step) may include a detergent cleaning step (steps S20 to S22, S25 to S27), a preliminary water supply step S23, a standby step S24, and a main water supply step. S34 process. In addition, the first cleaning process (the cleaning process including the main water supply step) includes the detergent cleaning step (steps S20 to S27), the preliminary water supply step S23, the standby step S24, and the main water supply step S34. This does not mean that the preparation is repeated. Water supply step S23 and standby step S24.

The washing machine in the first aspect is a washing machine configured to be able to put in a water-soluble disposable solid agent, and is provided with: a washing tank rotatably installed in the casing; and a detergent box that accommodates the detergent supplied to the washing tank. of lotion. Furthermore, the washing machine is provided with: a solid agent box that accommodates the solid agent supplied to the washing tub; a first water supply valve that supplies water to the detergent box; a second water supply valve that supplies water to the solid agent box; and a control unit that controls the first water supply. valve and the 2nd water supply valve. In the washing process, the control unit opens the first water supply valve and closes the second water supply valve. In the washing process after the washing process, the control unit opens the second water supply valve and performs a formal water supply step of supplying water to the solid agent.

As the washing machine in the second aspect, in the washing machine in the first aspect, the washing process includes at least a first washing process and a second washing process performed after the first washing process, and the control unit During the cleaning process, the second water supply valve is opened.

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

In the washing machine according to the fourth aspect, in the washing machine according to the third aspect, the predetermined amount is a water level at which the water level of the washing tank submerges the laundry accommodated in the washing tank, and the liquor ratio becomes 10 L/ kg or more, or the same water level as the washing process.

The washing machine in the fifth aspect is the washing machine in any one of the first to fourth aspects, and further has: a stirring mechanism to stir the laundry accommodated in the washing tub, and the control part drives the stirring mechanism to perform In the first stirring state, open the second water supply valve.

The washing machine in the sixth aspect is the washing machine in any one of the first to fifth aspects, and further has: a drain valve for draining water from the washing tank. The control unit opens the first water supply valve, the second water supply valve, and the drain valve so that the maximum water level of the washing tub in the washing process including the actual water supply step becomes greater than the maximum water level of the washing tub in the washing process.

The washing machine in the seventh aspect is the washing machine in the second aspect, and further has a drain valve for draining water from the washing tank. The control unit opens the first water supply valve, the second water supply valve, and the drain valve so that the highest water level of the washing tub in the first cleaning process becomes greater than the highest water level of the washing tub in the second cleaning process.

The washing machine in the eighth aspect is the washing machine in the second aspect, and further includes: a softener supply mechanism that supplies softener to the washing tub, and the control unit drives the softener supply mechanism to wash the washing tub in the second washing process. The tank supplies softener.

The washing machine in the ninth aspect is the washing machine in the fifth aspect, and further includes: a water temperature detection unit that detects the temperature of the water supplied to the washing tub. In the cleaning process including the formal water supply step, the control unit drives the stirring mechanism to further perform the second stirring in response to the water temperature detected by the water temperature detection unit.

The washing machine in the tenth aspect is the washing machine in any one of the first to ninth aspects, further comprising: a water temperature detection part that detects the water temperature of the water supplied to the washing tub; and heating device to heat the water supplied to the sink. In the cleaning process including the formal water supply step, the control unit executes heating by the heater in response to the water temperature detected by the water temperature detection unit.

The washing machine in an 11th aspect is the washing machine in any one of the 1st to 10th aspects, further including: a water temperature detection part that detects the water temperature of the water supplied to the washing tub. In the cleaning process including the formal water supply process, the control unit opens the second water supply valve to perform additional water supply in response to the water temperature detected by the water temperature detection unit.

The washing machine according to a twelfth aspect is the washing machine according to any one of the first to eleventh aspects, further including a flow rate detection unit that detects the flow rate of water supplied to the washing tub. In the cleaning process including the formal water supply step, the control unit opens the second water supply valve to perform additional water supply in response to the flow rate detected by the flow rate detection unit.

In the washing machine according to the thirteenth aspect, in the washing machine according to the second aspect, the control unit intermittently opens the second water supply valve a plurality of times in the second washing step.

As a washing machine according to a fourteenth aspect, in any one of the first to thirteenth aspects, the washing process including the main water supply step includes: a preliminary water supply step of cleaning the solid agent through the second water supply valve. Provide water supply. Furthermore, the cleaning process including the main water supply step includes: a standby step in which, after the preliminary water supply step, the water supply by the second water supply valve is stopped; and a main water supply step, after the standby step, in which the preliminary water supply step is performed. Solid agent for water supply. The amount of water supplied in the preliminary water supply step is smaller than that in the formal water supply step.

In the washing machine according to the fifteenth aspect, in the washing machine according to the fourteenth aspect, the preliminary water supply step is executed in a state where the water level of the washing tub is equal to or higher than a predetermined water level.

The washing machine in the 16th aspect is the washing machine in any one of the 1st to 13th aspects, and further has a drain valve for draining the water in the washing tank. The cleaning process including the formal water supply step includes: a detergent cleaning step, which is performed before the formal water supply step; and a preliminary water supply step, which supplies the solid agent through the second water supply valve. Furthermore, the cleaning process including the main water supply step includes: a standby step in which, after the preliminary water supply step, the water supply by the second water supply valve is stopped; and a main water supply step, after the standby step, in which the preliminary water supply step is performed. Solid agent for water supply. In the detergent washing step, the control unit opens the first water supply valve to perform water supply, and then opens the drain valve to perform drainage.

The washing machine in the 17th aspect is the washing machine in any one of the 1st to 13th aspects, and further has: a drain valve for draining the water in the washing tank. The cleaning process including the formal water supply step includes: a preliminary water supply step in which the solid agent is supplied through the second water supply valve; and a standby step in which the water supply by the second water supply valve is stopped after the preliminary water supply step. Furthermore, the washing process including the main water supply step includes: a main water supply step in which water is supplied to the solid dosage form that has undergone a preliminary water supply step after the standby step; and a tablet washing step performed after the main water supply step. After performing the tablet washing step, the control unit opens the drain valve and performs drainage so that the water level after draining immediately after the tablet washing step becomes lower than the water level in the tablet washing step.

The washing method in the eighteenth aspect is a washing method performed by a washing machine incorporating a water-soluble disposable solid agent. The washing machine is equipped with: a washing tank rotatably installed in the casing; a detergent box accommodating detergent supplied to the washing tank; a solid agent box accommodating solid agent supplied to the washing tank; and a first water supply valve for The detergent box supplies water; and the second water supply valve supplies water to the solid agent box. The washing method includes: opening the first water supply valve and closing the second water supply valve in the washing process; and performing the formal water supply step of opening the second water supply valve and supplying water to the solid agent in the washing process after the washing process.

Although this disclosure has fully described the preferred embodiments with reference to the attached drawings, various modifications and modifications will undoubtedly be made to those skilled in the art. As long as they do not depart from the scope of the disclosure defined by the appended claims, such modifications or modifications should be understood to be included therein.

industrial availability The washing machine of the present disclosure is useful as a household washing machine, a commercial washing machine, or any type of washing and drying machine (for example, a household drum-type washing machine).

1: washing machine 2: Shell 3: sink 4: Sink 5: Detergent supply unit 6: Manual input unit 7: Automatic input unit 8: Stirring mechanism 9:Drain valve 10: Water supply components 10a, 10b, 10c: water supply valve 11:Flow path components 12,13: Water supply nozzle 14,15,16,20,41,60a,61a,62a,67a: opening 21:door 25:Water level sensor 26:Weight sensor 27:Water temperature sensor 28:Heater 40:Through hole 50:Unit box 50a: cover 60: Detergent box 61:Softener box 62:Powder lotion box 63: Tablet box 63a, 65a, 66a: input port 64: Ontology part 64a,78a: Bottom surface 65,66:Inlet port component 67:Space 70,71: slot 73,74: Liquid discharge flow path 74a:Suction port 77,78: Accommodation space 80:Side wall 81: Zhoubi 82: Mesh 88:Protrusion 89: Lateral wall A2:Input direction B, W1, W2: Arrow C:Control Department D0: diameter F1, F2, F3: path J: Tablets K: Width direction K10: Accommodation space L: forward and backward direction L1: Front side L2: Rear side P1,P2: points Q1: Water supply volume T0:Thickness Y0: lowest water level Y1: laundry water level Y2: Detergent cleaning water level Y3: Water level before sterilization Y4: water level during sterilization Y5: Tablet cleaning water level Y6: Final cleaning water level S10~S17, S20~S27, S30~S42, S50~S56, S60~S63, S70: steps

FIG. 1 is a perspective view showing the structure of a washing machine according to an embodiment of the present disclosure.

FIG. 2 is a perspective view showing the structure of the detergent supply unit.

FIG. 3 is a perspective view showing the structure of the detergent supply unit.

FIG. 4 is a perspective view showing the structure of the manual injection unit.

FIG. 5 is a cross-sectional view showing the structure of the manual injection unit.

FIG. 6 is a perspective view showing the structure of the manual injection unit.

FIG. 7 is a perspective view showing the structure of the tablet box.

8A is a perspective view showing the shape of a tablet.

8B is a perspective view showing the shape of the tablet.

FIG. 9 is a plan view showing the structure of the detergent supply unit.

FIG. 10 is a cross-sectional view showing the structure of the detergent supply unit.

Fig. 11 is a schematic cross-sectional view showing the structure of the tablet box.

FIG. 12A is a sequence diagram showing the flow of processing in the sterilization process.

FIG. 12B is a sequence diagram showing the flow of processing in the laundry process.

FIG. 12C is a sequence diagram showing the flow of processing in a part of the first cleaning step.

FIG. 12D is a sequence diagram showing the flow of processing in the detergent washing step.

FIG. 12E is a sequence diagram showing the flow of processing in the sterilization step.

FIG. 12F is a sequence diagram showing the flow of processing in the tablet cleaning step.

FIG. 12G is a sequence diagram showing the flow of processing in the second washing step and the dehydration step.

Fig. 13 is a diagram showing water level changes during the sterilization process.

FIG. 14 is a diagram showing the operations of the water supply valve and the drain valve during the sterilization process.

Fig. 15 is a diagram showing the water level of the washing tub.

Y0: lowest water level

Y1: laundry water level

Y2: Detergent cleaning water level

Y3: Water level before sterilization

Y4: water level during sterilization

Y5: Tablet cleaning water level

Y6: Final cleaning water level

S11, S14, S15, S20, S23, S25, S30, S34, S39, S42, S50, S53, S54, S60, S63, S70: Steps

Claims (18)

A washing machine is a washing machine that can be put into a water-soluble disposable solid agent, and has: A washing tank is rotatably arranged in the housing; a detergent box for accommodating detergent supplied to the aforementioned washing tank; A solid agent box for accommodating the aforementioned solid agent supplied to the aforementioned washing tank; The first water supply valve supplies water to the aforementioned detergent box; The second water supply valve supplies water to the aforementioned solid agent box; and a control unit that controls the aforementioned first water supply valve and the aforementioned second water supply valve, During the washing process, the control unit opens the first water supply valve and closes the second water supply valve, In the washing process after the washing process, the second water supply valve is opened to perform a formal water supply step of supplying water to the solid agent. Such as the washing machine of claim 1, wherein the aforementioned washing process includes at least a first washing process and a second washing process performed after the aforementioned first washing process, The control unit opens the second water supply valve in the first cleaning step. The washing machine according to claim 2, wherein the control unit opens the first water supply valve before opening the second water supply valve to supply more than a predetermined amount of water to the washing tub. The washing machine of claim 3, wherein the predetermined amount is an amount at which the water level of the washing tank reaches the following water level: a water level that submerges the laundry contained in the washing tank, a water level at which the liquor ratio becomes 10L/kg or more, or a water level that is equal to or greater than 10L/kg. The same water level for the laundry process. For example, the washing machine of claim 1 further has: The stirring mechanism stirs the laundry contained in the aforementioned washing tank, The control unit opens the second water supply valve while driving the stirring mechanism to perform the first stirring. For example, the washing machine of claim 1 further has: Drainage valve to drain the water from the aforementioned washing tank, The control unit opens the first water supply valve, the second water supply valve and the drain valve so that the highest water level of the washing tank in the washing process including the main water supply step becomes higher than that of the washing tank in the washing process. The highest water level is greater. For example, the washing machine of claim 2 further has: Drainage valve to drain the water from the aforementioned washing tank, The control unit opens the first water supply valve, the second water supply valve, and the drain valve so that the highest water level of the washing tank in the first cleaning step becomes higher than that of the washing tank in the second cleaning step. The highest water level is greater. For example, the washing machine of claim 2 further has: A softener supply mechanism supplies softener to the aforementioned washing tank, In the second washing step, the control unit drives the softener supply mechanism to supply softener to the washing tub. For example, the washing machine of claim 5 further has: The water temperature detection part detects the water temperature of the water supplied to the aforementioned washing tank, In the cleaning process including the formal water supply step, the control unit drives the stirring mechanism to further perform the second stirring in response to the water temperature detected by the water temperature detection unit. Such as the washing machine of claim 1, which further has: The water temperature detection unit detects the water temperature of the water supplied to the aforementioned washing tank; and A heater heats the water supplied to the washing tank, In the cleaning process including the formal water supply step, the control unit executes heating by the heater in response to the water temperature detected by the water temperature detection unit. For example, the washing machine of claim 1 further has: The water temperature detection part detects the water temperature of the water supplied to the aforementioned washing tank, In the cleaning process including the formal water supply step, the control unit opens the second water supply valve to perform additional water supply in response to the water temperature detected by the water temperature detection unit. For example, the washing machine of claim 1 further has: The flow rate detection unit detects the flow rate of the water supplied to the aforementioned washing tank, In the cleaning process including the formal water supply step, the control unit opens the second water supply valve to perform additional water supply in response to the flow rate detected by the flow rate detection unit. The washing machine according to claim 2, wherein the control unit intermittently opens the second water supply valve a plurality of times during the second washing process. For example, the washing machine according to any one of claims 1 to 13, wherein the washing process including the aforementioned formal water supply step includes: In the preparatory water supply step, the solid agent is supplied with water through the second water supply valve; The standby step is to stop the water supply from the second water supply valve after the aforementioned preliminary water supply step; and In the aforementioned formal water supply step, after the aforementioned standby step, water is supplied to the aforementioned solid agent that has undergone the aforementioned preliminary water supply step, The amount of water supplied in the aforementioned preliminary water supply step is smaller than the amount of water supplied in the aforementioned formal water supply step. The washing machine of claim 14, wherein the preparatory water supply step is performed when the water level of the washing tank is above a predetermined water level. For example, the washing machine of claim 1 further has: Drainage valve to drain the water from the aforementioned washing tank, The cleaning process including the formal water supply steps mentioned above includes: The detergent cleaning step is performed before the formal water supply step mentioned above; In the preparatory water supply step, the solid agent is supplied with water through the second water supply valve; The standby step is to stop the water supply from the second water supply valve after the aforementioned preliminary water supply step; and In the aforementioned formal water supply step, after the aforementioned standby step, water is supplied to the aforementioned solid agent that has undergone the aforementioned preliminary water supply step, In the detergent washing step, after opening the first water supply valve to perform water supply, the control unit opens the drain valve to perform drainage. For example, the washing machine of claim 1 further has: Drainage valve to drain the water from the aforementioned washing tank, The cleaning process including the formal water supply steps mentioned above includes: In the preparatory water supply step, the solid agent is supplied with water through the second water supply valve; The standby step is to stop the water supply by the second water supply valve after the aforementioned preliminary water supply step; In the aforementioned formal water supply step, after the aforementioned standby step, water is supplied to the aforementioned solid agent that has undergone the aforementioned preliminary water supply step; and The tablet cleaning step is performed after the formal water supply step mentioned above. After performing the tablet washing step, the control unit opens the drain valve to perform drainage so that the water level immediately after the tablet washing step becomes lower than the water level in the tablet washing step. A laundry method performed by a washing machine incorporating a water-soluble disposable solid agent, The aforementioned washing machine has: A washing tank is rotatably arranged in the housing; a detergent box for accommodating detergent supplied to the aforementioned washing tank; A solid agent box for accommodating the aforementioned solid agent supplied to the aforementioned washing tank; The first water supply valve supplies water to the aforementioned detergent box; and The second water supply valve supplies water to the aforementioned solid agent box, The aforementioned laundry methods include: During the laundry process, open the aforementioned first water supply valve and close the aforementioned second water supply valve; and In the washing process after the washing process, the second water supply valve is opened to perform a formal water supply step of supplying water to the solid agent.

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