WO2023199625A1

WO2023199625A1 - Washing machine and washing method

Info

Publication number: WO2023199625A1
Application number: PCT/JP2023/007202
Authority: WO
Inventors: 慶之工藤; 和浩田村; 丁英徐; 祐揮大黒
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2022-04-12
Filing date: 2023-02-28
Publication date: 2023-10-19
Also published as: TW202346678A; JP2023156067A

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 machine and washing method

The present disclosure relates to a washing machine.

For example, Patent Document 1 discloses a washing machine that finishes laundry using metal ions that have a sterilizing effect.

The washing machine described in Patent Document 1 includes a metal ion generating means that generates metal ions, and a control device that controls washing, rinsing, and dehydration processes. The control device operates the metal ion generating means in the final rinsing step.

Patent No. 6857805

However, there is still room for improvement in terms of sterilization performance for laundry.

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

A washing machine according to one aspect of the present disclosure is a washing machine configured to be able to load a water-soluble, single-use solid agent, and includes a washing tub rotatably provided in a housing, and a washing tub that supplies water to the washing tub. A detergent case for accommodating the detergent to be supplied to the washing tub, and a solid agent case for accommodating the solid agent to be supplied to the washing tub. The washing machine also includes 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 the washing process, and in the rinsing process after the washing process, opens the second water supply valve to supply water to the solid agent. Execute the main water supply step.

A washing method according to one embodiment of the present disclosure is a washing method using a washing machine into which a water-soluble, single-use solid agent is added. A washing machine consists of a washing tub rotatably provided in a housing, a detergent case containing detergent to be supplied to the washing tub, a solid agent case containing a solid agent to be supplied to the washing tub, and a detergent case. It includes a first water supply valve that supplies water and a second water supply valve that supplies water to the solid agent case. The washing method includes opening the first water supply valve and closing the second water supply valve in the washing process, and opening the second water supply valve and supplying water to the solid agent in the rinsing process after the washing process. and performing the main water supply step.

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

FIG. 1 is a perspective view showing the configuration of a washing machine according to an embodiment of the present disclosure. FIG. 2 is a perspective view showing the configuration of the washing agent supply unit. FIG. 3 is a perspective view showing the configuration of the washing agent supply unit. FIG. 4 is a perspective view showing the configuration of the manual input unit. FIG. 5 is a sectional view showing the configuration of the manual input unit. FIG. 6 is a perspective view showing the configuration of the manual input unit. FIG. 7 is a perspective view showing the structure of the tablet case. FIG. 8A is a perspective view showing the shape of a tablet. FIG. 8B is a perspective view showing the shape of the tablet. FIG. 9 is a top view showing the configuration of the washing agent supply unit. FIG. 10 is a sectional view showing the configuration of the washing agent supply unit. FIG. 11 is a schematic cross-sectional view showing the structure of the tablet case. FIG. 12A is a sequence diagram showing the flow of processing in the sterilization course. FIG. 12B is a sequence diagram showing the flow of processing in the washing process. FIG. 12C is a sequence diagram showing the flow of processing in part of the first rinsing step. FIG. 12D is a sequence diagram showing the flow of processing in the detergent rinsing 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 rinsing step. FIG. 12G is a sequence diagram showing the process flow in the second rinsing step and the dehydration step. FIG. 13 is a diagram showing water level changes during the sterilization course. FIG. 14 is a diagram showing the operation of the water supply valve and the drain valve in the sterilization course. FIG. 15 is a diagram showing the water level of the washing tub.

(Findings, etc. that formed the basis of this disclosure)
At the time the inventors came up with the present disclosure, a water-soluble solid agent containing sodium dichloroisocyanurate was known as a disinfectant technology for bath cleaning. The inventors took a cue from the technology of disinfectants for bath cleaning and came up with the idea of a washing machine that dispenses a single-use water-soluble solid agent to impart solid agent components to laundry. Then, the inventors discovered that when the dissolved solid agent mixes with other laundry agents such as detergents or fabric softeners, a chemical reaction occurs and the sterilization performance deteriorates. Further, if the dissolved solids adhere to the laundry, there is a risk that the laundry will be discolored. In order to solve these problems, the inventors have constructed the subject matter of the present disclosure.

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

[overall structure]
FIG. 1 is a perspective view showing the configuration of a washing machine 1 according to an embodiment of the present disclosure. The washing machine 1 is a vertical washing machine, and is configured to be able to load tablets J (see FIG. 5), which are an example of a water-soluble, single-use solid agent. As shown in FIG. 1, the washing machine 1 includes a housing 2, a water tank 3, a washing tank 4, a washing agent supply unit 5, an agitation mechanism 8, a drain valve 9, a water level sensor 25, and a weight sensor. 26, a water temperature sensor 27, a heater 28, and a control section C.

<Housing>
The housing 2 is a member that forms the appearance of the washing machine 1. An opening 20 and a door 21 that can be opened and closed to cover the opening 20 are provided on the upper surface of the housing 2.

<Aquarium>
The water tank 3 is provided inside the housing 2 and is a generally cylindrical member with one end closed so as to store washing water. The water tank 3 may also be called an outer tank.

<Washing tub>
The washing tub 4 is a generally cylindrical member that is rotatably provided inside the water tub 3 and accommodates laundry such as clothes. A large number of through holes 40 communicating with the water tank 3 are formed in the washing tub 4 . The through hole 40 allows washing water and detergent to move between the water tank 3 and the washing tub 4. The washing tub 4 further has an opening 41 at a position facing the opening 20 of the housing 2. Laundry is thrown into the washing tub 4 through the opening 41. The washing tub 4 may also be called a drum or an inner tub.

<Washing agent supply unit>
The washing agent supply unit 5 is a unit that supplies washing agents such as liquid agents, powder detergents, and solid agents to the washing tub 4 . Supplying the washing agent means discharging it downward toward the washing tub 4. The liquid agent is a liquid agent used for washing laundry such as clothes. The liquid may include detergent, fabric softener, and neutral detergent.

The washing agent supply unit 5 includes a manual dosing unit 6 and an automatic dosing unit 7.

<Stirring mechanism>
The stirring mechanism 8 is a member that stirs the water and laundry in the washing tub 4. The stirring mechanism 8 is, for example, a pulsator connected to the bottom of the washing tub 4. The stirring mechanism 8 performs a reversing operation.

<Drain valve>
The drain valve 9 is configured to be openable and closable, and when opened, drains water stored in the water tank 3 (washing tank 4). In addition, although the drain valve 9 is described as if it exists outside the washing machine 1 in FIG. 1, it is provided at the lower part of the housing 2.

<Sensor>
The water level sensor 25 is a sensor that measures the water level contained in the washing tub 4. The water level sensor 25 is, for example, a tube containing air, and detects the water level according to a pressure difference caused by an increase or decrease in the water level. The water level sensor 25 corresponds to an example of a flow rate detection unit of the present disclosure that detects the flow rate of water supplied to the washing tub of the present disclosure. Weight sensor 26 is a sensor that detects the weight of laundry placed in washing tub 4 . The water temperature sensor 27 is a sensor that detects the temperature of the water in the washing tub 4, and corresponds to an example of the water temperature detection section of the present disclosure.

<Heater>
The heater 28 is a heater arranged below the washing tub 4 for heating the water in the washing tub 4. The maximum temperature of the heater 28 is, for example, 65°C.

<Control unit>
The control unit C is a member that controls the operation of the washing machine 1, and in the embodiment particularly controls a plurality of

water supply valves

10a, 10b, 10c and execution of a sterilization course, which will be described later. In addition, although the control part C is described as if it exists outside the washing machine 1 in FIG. 1, the control part C is provided in the washing machine 1, and its arrangement is not particularly limited. The control unit C may be a specially designed hardware circuit that implements this function. Further, the control unit C includes, for example, a memory (not shown) storing a program and a processing circuit (not shown) corresponding to a processor such as a CPU (Central Processing Unit), and the processor executes the program. The above function may be achieved by doing so. Note that the program stored in the memory may be provided by being recorded on a non-temporary recording medium such as a memory card, or may be provided through a telecommunications line such as the Internet.

Next, the configuration of the washing agent supply unit 5 will be explained with reference to FIGS. 2 and 3. 2 and 3 are perspective views showing the configuration of the washing agent supply unit 5.

As shown in FIG. 2, the washing agent supply unit 5 includes a unit case 50, a lid 50a, a manual dosing unit 6, an automatic dosing unit 7, a water supply member 10, and a channel member 11 (see FIG. 3). Equipped with.

As shown in FIG. 3, the unit case 50 is a member that houses the manual input unit 6, the automatic input unit 7, and the flow path member 11. The upper part of the unit case 50 is open and covered with a lid 50a.

The manual loading unit 6 is a mechanism that allows the user to manually load one dose of washing agent such as liquid, powdered detergent, or solid detergent each time the washing machine 1 is operated. The amount of washing agent added to the manual injection unit 6 flows into the washing tub 4 in the amount added.

One load of laundry detergent to be added to the manual injection unit 6 is stored in a plurality of

cases

60, 61, 62, and 63 formed by the manual injection unit 6. In embodiments, each

case

60, 61, 62, 63 contains a single dose of detergent, fabric softener, detergent powder, and water-soluble solids (eg, tablets).

The automatic dosing unit 7 is a mechanism that automatically puts a predetermined amount of liquid into the washing tub 4 from tanks 70 and 71 that store the liquid. The automatic feeding unit 7 feeds an appropriate amount of liquid of an appropriate type into the washing tub 4 depending on the amount and type of laundry, for example. The automatic dosing unit 7 includes two tanks 70 and 71 arranged in the width direction K (for example, horizontally) and accommodating a liquid agent, and a pump (not shown) that sucks and discharges the liquid agent. In the embodiment, tank 70 contains detergent and tank 71 contains fabric softener. Note that the automatic feeding unit 7 corresponds to an example of the fabric softener supply mechanism of the present disclosure that supplies fabric softener to the washing tub of the present disclosure.

The water supply member 10 is a mechanism that supplies water to the washing agent supply unit 5 via the channel member 11. The water supply member 10 includes a plurality of

water supply valves

10a, 10b, and 10c, and the destination of water supply can be changed by opening and closing the

water supply valves

10a, 10b, and 10c. Specifically, when the water supply valve 10a is opened, water is supplied to the cases 60 and 62, and when the water supply valve 10b is opened, water is supplied to the

cases

61 and 63, and the water supply valve 10c is opened. Then, water is supplied to the automatic dosing unit 7. The

water supply valves

10a, 10b, and 10c are, for example, electromagnetic valves. Note that the water supply valve 10a is an example of the first water supply valve of the present disclosure that supplies water to the detergent case of the present disclosure, and the water supply valve 10b is an example of the second water supply valve of the present disclosure that supplies water to the solid agent case of the present disclosure. , respectively.

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

cases

60, 61, 62, and 63, and is connected to the

water supply valves

10a, 10b, and 10c. More specifically, the flow path member 11 forms 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

cases

60, 61, 62, and 63 of the manual input unit 6 flows into the washing tub 4 together with the stored detergent.

Next, the configuration of the manual input unit 6 will be described in more detail with reference to FIGS. 3 to 6. FIG. 4 is a perspective view showing the configuration of the manual input unit 6. FIG. 5 is a cross-sectional view showing the configuration of the manual input unit 6 with the case 63 and input port members 65 and 66 removed. FIG. 6 is a perspective view showing the configuration of the manual input unit 6 with the case 63 and input slot members 65 and 66 removed.

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

As shown in FIG. 4, the main body portion 64 accommodates inlet members 65 and 66 and a case 63 (hereinafter referred to as tablet case 63). Inlet members 65, 66 and tablet case 63 are removably housed in main body 64.

As shown in FIGS. 4 and 5, the main body portion 64 is provided with cases 60, 61, and 62 arranged side by side in the width direction K, in which the washing agent to be supplied to the washing tub 4 is accommodated. As mentioned above, the case 60 (hereinafter referred to as detergent case 60) stores detergent, the case 61 (hereinafter referred to as softener case 61) stores softener, and the case 62 (hereinafter referred to as powder detergent case 62) stores detergent powder. to accommodate. In the main body portion 64, the detergent case 60 and the powder detergent case 62 are adjacent to each other. On the other hand, a space 67 is provided between the detergent case 60 and the softener case 61, and a tablet case 63 is arranged in the space 67.

As shown in FIG. 5, the softener case 61 has a storage space 78 that accommodates the softener and a liquid discharge channel 74. The liquid discharge channel 74 has a U-shape that extends upward from the suction port 74a, is folded back at the top of the softener case 61, and is connected to the bottom surface 78a of the storage space 78. When a predetermined amount of water accumulates in the storage space 78, the liquid agent discharge channel 74 sucks up the softener from the suction port 74a and discharges it from the opening 61a formed in the bottom surface 78a of the storage space 78. The detergent case 60 has a storage space 77 that accommodates detergent, and a liquid agent discharge channel 73 similar to the liquid agent discharge channel 74 .

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

The tablet case 63 is a member that accommodates a water-soluble solid agent used in one sterilization washing course. When the solid agent is exposed to water, the solid agent is dissolved and the dissolved solid agent is supplied to the washing tub 4. Note that the tablet case 63 corresponds to an example of a solid drug case of the present disclosure that accommodates a water-soluble, single-use solid drug of the present disclosure. Solid dosage forms are solid or hollow solids. For example, a solid dosage form is a solid material formed from compacted powder. A solid agent may also be referred to as a solid treatment agent. In the embodiment, Tablet J will be described as an example of a solid drug.

Here, Tablet J contains a component that exhibits sterilization performance. Tablet J contains a water-soluble component and has a certain shape before water is added, but when exposed to water, it breaks down into small pieces 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 disinfecting component. Tablet J may further contain a component that reacts with water and effervesces.

Regarding the shape of the tablet J, the tablet J may have a shape that allows it to move to a predetermined position in the tablet case 63, for example, has an outer peripheral shape or contour that allows it to roll and move. In the embodiment, the tablet J has a disc shape in which the diameter D0 is larger than the thickness T0 (see FIGS. 8A and 8B).

The tablets J put into the tablet case 63 may be specific tablets J that are expected to be used by the manufacturer of the washing machine 1. For example, tablet J may be one or more types of tablet J specified. Further, for example, the type of tablet J is selected from a catalog or list stored in the control unit C.

The tablet case 63 forms an input port 63a for inputting the tablet J on the front side L1. As shown in FIG. 4, when the tablet case 63 is placed in the main body 64, the slot 63a is arranged between the slots 65a and 66a that are aligned in the width direction K. On the other hand, as shown in FIG. 3, when the main body part 64 is pulled out from the unit case 50, the input port 63a is exposed over the entire surface. The input port 63a may have a vertically elongated shape.

As shown in FIG. 6, openings 60a, 61a, 62a, and 67a are provided in the bottom surface 64a of the main body portion 64 at positions corresponding to the cases 60, 61, and 62 and the spaces 67, respectively. When water is supplied from the water supply member 10 to each of the

cases

60, 61, 62, and 63, the contained washing agent flows out toward the washing tub 4 from each of the openings 60a, 61a, 62a, and 67a along with the water.

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

In the embodiment, the tablet case 63 has one side open structure including one side wall 80 and an open side on the opposite side. In the embodiment, outer wall 89 of softener case 61 functions as the other side wall of tablet case 63.

As shown in FIG. 7, the side wall 80 has a mesh 82 that penetrates in the thickness direction (width direction K) of the side wall 80. The melted tablets J flow out from the mesh 82 together with water and are supplied to the washing tub 4.

A peripheral wall 81 is provided on one surface of the side wall 80 so as to protrude in the width direction K (lateral direction). The peripheral wall 81 protrudes from the outer periphery of the side wall 80 and forms the front surface, bottom surface, and back surface of the tablet case 63. The peripheral wall 81 together with the side wall 80 guides and accommodates the tablet J inserted into the input port 63a into the accommodation space K10 on the rear side L2. The accommodation space K10 is a space that accommodates the tablets J during water supply.

Furthermore, the side wall 80 further includes a protrusion 88 that protrudes in the width direction K. The protrusion 88 stably holds the tablet J in the storage space K10. Then, the accommodation space K10 is defined by the peripheral wall 81 and the protrusion 88.

Water supply nozzles

12 and 13 of the flow path member 11 are formed in the upper part of the accommodation space K10. The housing 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 water supplied from the

water supply nozzles

12 and 13.

8A and 8B are perspective views showing the shape of the tablet J. As shown in FIGS. 8A and 8B, the tablet J has a disc 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 perpendicular to the feeding direction A2. FIG. 8B shows a posture in which the tablet J is placed horizontally with the thickness direction parallel to the feeding direction A2. The vertical position is a position in which the vertical dimension is larger than the width direction (for example, thickness direction) dimension of the tablet J in the horizontal section. In the embodiment, the tablets J are placed in the tablet case 63 in a vertical position.

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

FIG. 9 is a top view showing the configuration of the washing agent supply unit 5 with the lid 50a removed. As shown in FIG. 9, three

water supply valves

10a, 10b, and 10c (see FIG. 3) of the water supply member 10 are connected to paths F1, F2, and F3 of the flow path member 11, respectively. Paths F1, F2, 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 detergent case 60 and the powder detergent case 62. Path F2 connected to water supply valve 10b forms a flow path for supplying water to softener case 61 and tablet case 63. The path F3 connected to the water supply valve 10c forms a flow path for supplying water to the automatic dosing unit 7. By supplying water to a plurality of cases through one route, the number of water supply valves in the water supply member 10 can be reduced and the configuration can be simplified.

The path F2 forms openings 14 and 15 facing the tablet case 63 and a plurality of openings 16 facing the softener case 61. When the water supply valve 10b is opened and communicated with the path F2, water flows into the tablet case 63 through the openings 14 and 15 (see arrow B). On the other hand, water that has exceeded the openings 14 and 15 then flows into the softener case 61 through the opening 16.

FIG. 10 is a sectional view showing the configuration of the washing agent 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 at the top of the tablet case 63. The

water supply nozzles

12 and 13 are arranged in the front-rear direction L above the accommodation space K10. The

water supply nozzles

12 and 13 are cylindrical members, and water flowing into the openings 14 and 15 is discharged into the tablet case 63 through the

water supply nozzles

12 and 13.

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

The water hits point P1 on the side wall 80 and point P2 on the outer wall 89 of the softener case 61, and flows downward along the wall surface. Points P1 and P2 are located above the apex of the tablet J and at a height above the mesh 82 above the accommodation space K10. After the collision, water flows downward along the wall surface, hits the side of the tablet J, and is absorbed by the tablet J. Since the water once collides with the side wall 80 and then indirectly hits the side surface of the tablet J, the force and flow rate of the water can be reduced compared to when the water hits the tablet J directly from the

water supply nozzles

12, 13.

[motion]
Next, with reference to FIGS. 12A to 15, the operation of the washing machine 1 when executing the sterilization course will be described. FIG. 12A is a sequence diagram showing the flow of processing in the sterilization course, and FIGS. 12B to 12G are sequence diagrams showing the flow of processing in some steps of the sterilization course. FIG. 13 is a diagram showing water level changes during the sterilization course. FIG. 14 is a diagram showing the operation of the

water supply valves

10a, 10b and the drain valve 9 in the sterilization course. FIG. 15 is a diagram showing the water level of the washing tub 4.

A sterilization course refers to a washing course that is carried out to remove bacteria attached to so-called laundry items such as clothes and towels. One tablet J is used in one sterilization course. After the sterilization course ends, it is assumed that the tablets J do not remain in the tablet case 63 in the same shape as before they were inserted. Therefore, the user inserts a new tablet J into the tablet case 63 before the next sterilization course.

First, the flow of the entire sterilization course will be described with reference to FIG. 12A. As shown in FIG. 12A, in the sterilization course, the control unit C sequentially executes a washing process, a first rinsing process, a second rinsing process, and a dehydration process. That is, the rinsing step includes at least a first rinsing step and a second rinsing step performed after the first rinsing step. In the washing process, detergent is supplied to the washing tub 4, and in the rinsing process, other liquids, tablets, etc. are supplied to the washing tub 4. In the embodiment, the tablets J are supplied to the washing tub 4 in the first rinsing step, ie, one step before the final rinsing step. That is, in the first rinsing step, a main water supply step S34, which will be described later, is performed in which the water supply valve 10b is opened and water is supplied to the tablet J (solid dosage form). If a softener is also supplied, the softener is supplied to the washing tub 4 in the second or final rinse step.

First, as a preliminary preparation, the user inputs detergent and one tablet J for one sterilization course into the manual input unit 6. Detergent is introduced into the detergent case 60 through the inlet 65a. The tablet J is placed into the slot 63a in a vertical position. When using the softener, the user confirms that the softener is stored in the tank 71 of the automatic dosing unit 7, and replenishes the tank 71 with the softener if the remaining amount is low.

The detergent may also be automatically dispensed by the automatic dispenser unit 7. When automatically dispensing detergent, the user confirms that the detergent is stored in the tank 70 of the automatic dispensing unit 7, and replenishes the tank 70 with detergent if the remaining amount is low.

Hereinafter, the flow of processing in each step constituting the sterilization course will be explained in detail.

<Washing process>
The flow of the washing process will be described with reference to FIGS. 12B, 13, and 14. First, as shown in FIGS. 12B, 13, and 14, the control unit C determines the water supply amount Q1 for the washing process (step S10). Specifically, the control unit C acquires the weight of the laundry in the washing tub 4 detected by the weight sensor 26, and determines the water supply amount Q1 according to the acquired 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). Water flows into the detergent case 60 through the path F1, and is supplied to the washing tub 4 together with the detergent contained in the detergent case 60.

Subsequently, the control unit C determines whether the water level of the washing tub 4 is equal to or higher than the washing water level Y1 according to the water supply amount Q1 (step S12). Specifically, the control unit C acquires the water level detected by the water level sensor 25, and compares the acquired water level with the washing water level Y1 to make the determination.

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

If the water level of the washing tub 4 is equal to or higher than the wash 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 according to the water supply amount Q1, open the water supply valve 10a, and continue water supply until the determined water supply time has elapsed. .

Next, the control unit C operates the stirring mechanism 8 of the washing tub 4 to wash and stir the laundry (step S14). Specifically, the control unit C causes the stirring mechanism 8 to perform a reversing operation to perform washing and stirring. Washing and stirring is continued for a predetermined period of time. Washing and stirring may be continued until a predetermined number of inversions is achieved. Therefore, in the washing process, the washing machine 1 can supply detergent to the washing tub 4 and wash the laundry by supplying water and stirring.

The control unit C may open the water supply valve 10a to supply additional water during washing and agitation.

Next, the flow of processing in the first rinsing step will be explained. The first rinsing step includes a preparation, a detergent rinsing step, a sterilization step and a tablet rinsing step. Below, they will be explained in order.

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

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

Subsequently, the control unit C determines whether the water level of the washing tub 4 is below the minimum water level Y0 (step S16). Specifically, the control unit C acquires the water level detected by the water level sensor 25, and compares the water level with the lowest water level Y0 to make the determination. As shown in FIG. 15, the lowest water level Y0 is a water level that is 10% or less of the highest water level of the washing tub 4. Further, the water level in a state where no water is stored in the washing tub 4 may be set as the lowest water level Y0.

If the water level of the washing tub 4 is higher than the lowest water level Y0 (NO in step S16), the process returns to step S15.

If the water level of the washing tub 4 is below 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.

<First rinsing step: detergent rinsing step>
Subsequently, as shown in FIGS. 12D, 13, and 14, the control unit C executes the detergent rinsing step (steps S20 to S27) of the first rinsing process. The detergent rinsing step is performed to rinse the laundry from the detergent put into the washing tub 4 during the washing process.

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

Next, the control unit C determines whether the water level in the washing tub 4 is equal to or higher than the detergent rinse water level Y2 (step S21). Specifically, the control unit C acquires the water level detected by the water level sensor 25, and compares the water level with the detergent rinse water level Y2 to make the determination. As shown in FIG. 15, the detergent rinse water level Y2 is the water level that is assumed to be necessary for the laundry to be immersed in water. The control unit C may acquire the weight of the laundry in the washing tub 4 detected by the weight sensor 26, and determine the detergent rinse water level Y2 according to the acquired weight. For example, the detergent rinse water level Y2 is a water level at which the bath ratio is 10 L/kg according to the weight of the laundry acquired by the control unit C. Note that the detergent rinse water level Y2 is at least higher than the water level in a state where no water is stored in the washing tub 4.

If the water level in the washing tub 4 is lower than the detergent rinse water level Y2 (NO in step S21), the process returns to step S20.

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

Subsequently, the control unit C opens the water supply valve 10b and supplies a small amount of water to the path F2 (hereinafter, preliminary water supply step S23). This operation moistens the tablet J and makes it easier to dissolve. Water flows into the tablet case 63 through the path F2 and indirectly hits the tablets J as shown in FIG. The small amount of water supplied means that while the surface of the tablet J is moistened, the amount of water supplied is insufficient to dissolve the tablet J and cause it to flow out of the tablet case 63.

Here, the amount of water supplied in the preliminary water supply step S23 is smaller than the amount of water supplied in the subsequent main water supply step S34. In the preliminary water supply step S23, the small amount of water supplied from the water supply valve 10b may be 400 mL or more and 2500 mL or less, preferably 400 mL or more and 1250 mL or less. The flow rate of water supplied by the water supply valve 10b may be 5 L/min or more and 15 L/min or less. Approximately 15% of the water supplied from the water supply valve 10b is distributed to the tablet case 63, and for example, 50 mL or more and 200 mL or less of water flows into the tablet case 63. For example, when water is supplied at 12 L/min for 5 seconds and 1000 mL of water is supplied from the water supply valve 10b, 140 mL of water flows into the tablet case 63. The water supply time may be less than 10 seconds, preferably approximately 5 seconds.

By performing the preliminary water supply step S23 when the water level in the washing tub 4 is higher than the detergent rinse water level Y2, even if the tablets J dissolve and flow into the washing tub 4, the tablets J are prevented from adhering to the laundry. can. Therefore, the washing machine 1 can suppress discoloration of laundry.

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

By providing a standby time, the washing machine 1 can secure time for the tablets J moistened in the preliminary water supply step S23 to foam. Further, the washing machine 1 can ensure time for the pre-supplied water to further penetrate into the inside of the tablet J from the surface thereof. The foamed tablet J or the tablet J in which water has penetrated into the inside is easily dissolved in water. By performing the main water supply step S34 on the easily soluble tablet J, the tablet J can be easily dissolved, compared to the case where the main water supply step S34 is performed without performing the preliminary water supply step S23.

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

Subsequently, the control unit C determines whether the water level of the washing tub 4 is below the minimum water level Y0 (step S26). Specifically, the control unit C acquires the water level detected by the water level sensor 25, and compares the water level with the lowest water level Y0 to make the determination.

If the water level of the washing tub 4 is higher than the lowest water level Y0 (NO in step S26), the process returns to step S25.

If the water level in the washing tub 4 is below the minimum water level Y0 (YES in step S26), the control unit C closes the drain valve 9 (step S27) and ends the detergent rinsing step. Therefore, in the detergent rinsing step, the detergent can be more reliably rinsed off from the laundry, and the tablets J can be moistened and easily dissolved.

<First rinsing step: Sterilization step>
Subsequently, as shown in FIGS. 12E, 13, and 14, the control unit C executes the sterilization step (steps S30 to S42) of the first rinsing process. The sterilization step is executed to supply the tablets J placed in the tablet case 63 to the washing tub 4 and 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). Water is supplied to the washing tub 4 via the empty detergent case 60 through the path F1.

Subsequently, the control unit C determines whether the water level of the washing tub 4 is equal to or higher than the pre-sterilization water level Y3 (step S31). Specifically, the control unit C acquires the water level detected by the water level sensor 25, and compares the water level with the pre-sterilization water level Y3 to make the determination. The pre-sterilization water level Y3 is higher than the water level that is assumed to be necessary for the laundry to be immersed in water. The pre-sterilization water level Y3 is a water level at which the bath ratio is 10 L/kg or more, depending on the weight of the laundry acquired by the control unit C. In the embodiment, the pre-sterilization water level Y3 is higher than the washing water level Y1 and the detergent rinse water level Y2. Note that the pre-sterilization water level Y3 may be equal to the washing water level Y1 or the detergent rinsing water level Y2. Note that the pre-sterilization water level Y3 is at least higher than the water level in a state where no water is stored in the washing tub 4.

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

When the water level of 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).

Subsequently, the control unit C determines whether the standby time has elapsed (step S33).

If the standby time has not elapsed (NO in step S33), step S33 is executed again after a predetermined period of time, for example, 5 seconds has elapsed.

If the standby time has elapsed (YES in step S33), the control unit C executes the main water supply step S34. In the main water supply step S34, the control unit C closes the water supply valve 10a, opens the water supply valve 10b, and supplies water to the path F2. Water flows into the tablet case 63 through the path F2 and indirectly hits the tablets J as shown in FIG. Since the amount of water supplied is larger than that in the preliminary water supply step S23, the tablet J is dissolved. The melted tablets J are supplied to the washing tub 4 through the mesh 82 along with water.

The amount of water supplied in the main water supply step S34 may be 30 L of water, or may be supplied for 120 seconds or more, and is, for example, 30 times the amount of water supplied 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 such a configuration, it is possible to lengthen the water supply time for a predetermined amount of water supply. Therefore, the time period during which the tablet J is exposed to water can be increased, and the tablet J can be easily dissolved. Note that the flow rate of water supplied by opening the water supply valve 10b may be larger 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 the main water supply stirring of the laundry. Specifically, the control unit C causes the stirring mechanism 8 to perform a reversal operation to perform the main water supply stirring. Note that the main water supply stirring corresponds to an example of the first stirring of the present disclosure. Furthermore, in the embodiment, the control unit C continues the main water supply stirring for a predetermined period of time even after the main water supply step S34 ends. By such an operation, the tablets J can act uniformly on the laundry and exert a sterilization effect over a wide range.

Subsequently, the control unit C determines whether the water level of the washing tub 4 is equal to or higher than the sterilization water level Y4 (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 sterilization water level Y4 to make the determination. As shown in FIGS. 13 and 15, the sterilization water level Y4 is higher than the washing water level Y1, the detergent rinsing water level Y2, and the pre-sterilization water level Y3. By such an operation, the dissolved substances of the tablets J float in the water supplied to the washing tub 4, and it is possible to suppress the dissolved substances of the tablets J from adhering to the laundry. By preventing the dissolved substance of Tablet J from adhering to the laundry for a long period of time, it is possible to suppress damage and discoloration of the laundry. Furthermore, by increasing the amount of water relative to the dissolved material of the tablets J in the washing tub 4, the tablets J can be easily dissolved.

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

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

Subsequently, the control unit C determines whether or not the water supply conditions are such that the tablets J are difficult to dissolve. If the water supply conditions are such that the tablets J are difficult to dissolve, the control unit C performs additional steps (steps S37 to S34) after the main water supply step S34. S42) is executed. Conditions under which the tablet J is difficult to dissolve include a case where the water supply flow rate is large and a case where the water supply water temperature is low.

Therefore, 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 calculates the water supply flow rate by dividing the increase in the water level detected by the water level sensor 25 by the time taken for the increase in the water level.

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

If 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 case 63 (step S39). Specifically, the control unit C opens the drain valve 9 to drain a small amount of water, then closes the drain valve 9 and opens the water supply valve 10b to supply a small amount of water to the tablet case 63. The small amount of additional water supply is, for example, 5L of water supply. By such an 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 undissolved in the tablet case 63.

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

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

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

If the water supply temperature is lower than 10°C (YES in step S41), the control unit C operates the stirring mechanism 8 of the washing tub 4 to perform additional stirring of the laundry while the heater 28 is activated. Step S42). Specifically, while the heater 28 is performing heating, the control unit C causes the stirring mechanism 8 to perform a reversal operation to perform additional stirring. Note that this additional stirring corresponds to an example of the second stirring of the present disclosure.

In addition, in step S42, the control unit C further performs additional water supply to the tablet case 63 (step S39). Note that if the water supply temperature is lower than 10°C (YES in step S41) and the water supply flow rate is smaller than the predetermined flow rate (NO in step S38), the control unit C supplies additional water to the tablet case 63 (step S39). may be executed.

If the water supply temperature is higher than 10°C (NO in step S41), the control unit C ends the sterilization step. Therefore, in the sterilization step, water is supplied to dissolve the tablets J and supply them to the washing tub 4, thereby preventing the undissolved tablets J from adhering to the laundry in the washing tub 4, and washing the laundry. Can be sterilized.

<First rinsing step: Tablet rinsing step>
Subsequently, as shown in FIGS. 12F, 13, and 14, the control unit C executes the tablet rinsing step (steps S50 to S53) of the first rinsing process. The tablet rinsing step is executed to rinse the tablets J put into the washing tub 4 in the sterilization step.

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

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

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

If the water level in the washing tub 4 is below the tablet rinsing water level Y5 (YES in step S51), the control unit C closes the drain valve 9 (step S52). In this state, it is assumed that the washing tub 4 holds a constant water level higher than the lowest water level Y0.

Subsequently, 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, the components of the tablets J remaining in the laundry such as clothes can be rinsed away. Further, since water is supplied through the path F2, the water flows into the tablet case 63, and the undissolved tablets J can be further washed out.

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

Subsequently, the control unit C determines whether the water level of the washing tub 4 is below the minimum water level Y0 (step S55).

If the water level of the washing tub 4 is higher than the lowest water level Y0 (NO in step S55), the process returns to step S54.

If the water level of the washing tub 4 is below 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 more reliably rinse the tablets J from the laundry and discharge the water containing the tablets J from the washing tub 4.

Subsequently, the control unit C intermittently opens the water supply valve 10b multiple times to supply water to the path F2 (step S60). Specifically, the control unit C repeatedly opens and closes the water supply valve 10b at regular intervals over a certain period of time to supply water to the path F2. With this operation, water intermittently flows into the tablet case 63 through the path F2, and cleaning of the tablet case 63 can be facilitated by varying the flow rate of the inflowing water.

In parallel, the control unit C executes the supply of softener. The supply of softener is performed not by the manual dosing unit 6 but by the automatic dosing unit 7. Since the manual feeding softener case 61 shares the path F2 with the tablet case 63, if you try to feed the softener using the manual feeding unit 6, it will be difficult to feed the softener and the tablets J separately. There is a risk of mixing with Tablet J. If the softener and tablet J are mixed, it becomes difficult for tablet J to exhibit its ideal effect. On the other hand, when the softener and tablets J can be dispensed separately, the tablets J are supplied to the washing tub 4 in the first rinsing process, and the softener is supplied to the washing tub 4 in the final rinsing process (i.e., the second rinsing process). Can be supplied. Since the laundry can be rinsed in the second rinsing step after the tablets J are supplied in the first rinsing step, adhesion of the tablets J to the laundry can be further suppressed. Since the dehydration process can proceed immediately after supplying the softener to the washing tub 4, the components and fragrance attached to the laundry are maintained, compared to a case where a rinsing process is provided after the supply. Therefore, the control unit C supplies the softener by operating the automatic dosing unit 7.

Subsequently, the control unit C determines whether the water level of the washing tub 4 is equal to or higher than the final rinse water level Y6 (step S61). The final rinsing water level Y6 is lower than the sterilization water level Y4.

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

If the water level in the washing tub 4 is equal to or higher than the tablet rinsing 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>
Subsequently, in the dewatering process, the control unit C drains the water from the washing tub 4 and dehydrates the laundry (step S70). After that, the control unit C ends the sterilization course.

[summary]
The features of the present disclosure will be described by summarizing the above description.

The washing machine 1 according to the embodiment includes a tablet case 63 for manually loading sterilizing tablets J, a detergent case 60 and a softener case 61 for manually loading a liquid agent.

Since Tablet J is a solid treatment agent for sterilization, if it mixes with other washing agents in the washing tub 4, there is a risk that the sterilization performance of Tablet J will decrease due to mutual chemical action. Therefore, it is preferable to supply tablets J and other washing agents at different timings. In the present disclosure, by supplying the detergent to the washing tub 4 in the washing process, the tablets J in the first rinsing process, and the fabric softener in the second rinsing process, the washing machine 1 can prevent the washing machine 1 from mixing the respective washing agents and adversely affecting each other. It is possible to suppress the effects of

Furthermore, by performing the tablet rinsing process and the second rinsing process after supplying the tablets J in the first rinsing process, it is possible to suppress the tablets J from adhering to the laundry for a long time. Therefore, the washing machine 1 can suppress damage to the laundry or discoloration of the laundry due to the chemical action of the tablets J.

[effect]
According to the washing machine 1 according to the embodiment, the following effects can be achieved.

As described above, the washing machine 1 of the present embodiment is configured to be able to load water-soluble, single-use tablets J (solid dosage forms). The washing machine 1 includes a washing tub 4, a detergent case 60, a tablet case 63 (solid medicine case), a water supply valve 10a (first water supply valve), a water supply valve 10b (second water supply valve), and a control unit C. Equipped with. The washing tub 4 is rotatably provided within the housing 2. The detergent case 60 stores detergent to be supplied to the washing tub 4. The tablet case 63 accommodates the tablets J supplied to the washing tub 4. The water supply valve 10a supplies water to the detergent case 60. The water supply valve 10b supplies water to the tablet case 63. The control unit C controls the water supply 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). Further, the control unit C executes a main water supply step S34 in which water is supplied to the tablet J by opening the water supply valve 10b in the rinsing process after the washing process.

With such a configuration, the washing machine 1 of the present embodiment can supply water to the detergent case 60 and water to the tablet case 63 in different steps. Therefore, the detergent and the dissolved product of the tablets J are supplied to the washing tub 4 at different timings. Therefore, mixing of the detergent and the tablet J can be suppressed, and the effectiveness of the tablet J can be enhanced. That is, the washing machine 1 of this embodiment can improve the sterilization performance for laundry.

Further, in the washing machine 1 of the present embodiment, the rinsing process includes at least a first rinsing process and a second rinsing process executed after the first rinsing process, and the control unit C controls the rinsing process in the first rinsing process. , the water supply valve 10b is opened.

With such a configuration, the tablets J are supplied to the washing tub 4 in the first rinsing step. By performing the second rinsing step after that, tablet components remaining on the laundry can be rinsed away in the second rinsing step. By rinsing the tablet components more reliably, the washing machine 1 of this embodiment can suppress decolorization of laundry.

Furthermore, in the washing machine 1 of the present embodiment, the control unit C opens the water supply valve 10a to supply water to the washing tub 4 at a level equal to or higher than the pre-sterilization water level Y3 (predetermined amount) before opening the water supply valve 10b. Execute.

With such a configuration, the tablets J can be supplied while the washing tub 4 is filled with water at the pre-sterilization water level Y3. Therefore, the concentration of the tablets J in the washing tub 4 can be suppressed within an appropriate range, and the washing machine 1 of the present embodiment prevents the tablet components from coming into direct contact with the laundry and causing decolorization of the laundry. It can be suppressed.

In the washing machine 1 of the present embodiment, the pre-sterilization water level Y3 (predetermined amount) is such that the water level in the washing tub 4 is the water level at which the laundry stored in the washing tub 4 is submerged, and the bath ratio is 10 L/kg. This is the water level above or the same water level as in the washing process (washing water level Y1).

With such a configuration, the washing machine 1 of the present embodiment can suppress the decolorization of the laundry due to the tablet component coming into direct contact with the laundry.

Further, the washing machine 1 of the present embodiment further includes an agitation mechanism 8 that agitates the laundry stored in the washing tub 4, and the control unit C drives the agitation mechanism 8 to perform main water supply agitation (first water supply agitation). While stirring) is being performed, the water supply valve 10b is opened.

With such a configuration, the dissolved material of tablets J including fragments can be spread throughout the washing tub 4 and diluted without remaining on the laundry for a long time, so that the washing machine 1 of the present embodiment can be diluted. can suppress the decolorization of laundry.

Additionally, the washing machine 1 of this embodiment further includes a drain valve 9 that drains water from the washing tub 4. The control unit C is configured such that the sterilization water level Y4 (highest water level) of the washing tub 4 in the first rinsing process (rinsing process including the main water supply step) is higher than the washing water level Y1 (maximum water level) of the washing tub 4 in the washing process. Open the

water supply valves

10a, 10b and the drain valve 9 so that

With such a configuration, the washing machine 1 of the present embodiment can supply more water to the washing tub 4 in the first rinsing step in which the tablets J are supplied while suppressing the total amount of water supplied. Therefore, the washing machine 1 of the present embodiment can ensure a large space between the laundry items in the water, and can suppress adhesion of the tablets J. Moreover, since the concentration of the components of the tablet J can be diluted, the washing machine 1 of this embodiment can suppress discoloration.

Additionally, the washing machine 1 of this embodiment includes a drain valve 9 that drains water from the washing tub 4. The control unit C controls the water supply valve 10a so that the sterilizing water level Y4 (highest water level) of the washing tub 4 in the first rinsing step is higher than the final rinsing water level Y6 (highest water level) of the washing tub 4 in the second rinsing step. , 10b and the drain valve 9 are opened.

Further, the washing machine 1 of the present embodiment further includes an automatic loading unit 7 (softener supply mechanism) that supplies softener to the washing tub 4. In the second rinsing step, the control unit C drives the automatic loading unit 7 to supply the softener to the washing tub 4.

With such a configuration, the tablets J and the softener can be separately put into the washing tub 4. Therefore, the washing machine 1 of the present embodiment can suppress mixing of the tablets J and the softener, and can enhance the effect of the softener on the laundry.

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

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

Additionally, the washing machine 1 of the present embodiment includes a water temperature sensor 27 that detects the temperature of water supplied to the washing tub 4, and further includes a heater 28 that heats the water supplied to the washing tub 4. In the first rinsing step (rinsing step including the main water supply step), the control unit C performs heating by the heater 28 according to the water temperature detected by the water temperature sensor 27.

With such a configuration, even if the water temperature is low and the tablets J are difficult to dissolve, the washing machine 1 of the present embodiment dissolves the fine particles of the tablets J supplied to the washing tub 4 by heating. be able to.

Additionally, the washing machine 1 of this embodiment includes a water temperature sensor 27 that detects the temperature of water supplied to the washing tub 4. In the first rinsing process (rinsing process including the main water supply step), the control unit C opens the water supply valve 10b and additionally supplies water according to the water temperature detected by the water temperature sensor 27 (step S39).

With such a configuration, even if the water temperature is low and the tablets J are difficult to dissolve, the washing machine 1 of the present embodiment can increase the amount of water supplied to the tablet case 63 by performing additional water supply, thereby dissolving the tablets J. It is possible to prevent the tablets J from remaining undissolved in the tablet case 63 by melting them completely. Therefore, the washing machine 1 of the present embodiment can prevent fragments of the tablets J from remaining in the tablet case 63 after the washing operation is completed.

Additionally, the washing machine 1 of the present embodiment further includes a water level sensor 25 (flow rate detection section) that detects the flow rate of water supplied to the washing tub 4. In the first rinsing step (rinsing step including the main water supply step), the control unit C opens the water supply valve 10b and additionally supplies water according 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 tablets J are difficult to dissolve, the washing machine 1 of the present embodiment can increase the amount of water supplied to the tablet case 63 by performing additional water supply, thereby dissolving the tablets J. It is possible to prevent the tablets J from remaining undissolved in the tablet case 63 by melting them completely. Therefore, the washing machine 1 of the present embodiment can prevent fragments of the tablets J from remaining in the tablet case 63 after the washing operation is completed.

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

With such a configuration, the washing machine 1 of the present embodiment repeatedly supplies water to the tablet case 63 to melt the tablets J while suppressing the amount of water supplied to the tablet case 63, thereby dissolving the tablets J in the tablet case 63. Can suppress unmelted residue. Therefore, the washing machine 1 of the present embodiment can prevent fragments of the tablets J from remaining in the tablet case 63 after the washing operation is completed.

In the washing machine 1 of the present embodiment, the first rinsing process (rinsing 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 in which water is supplied to the tablets J using the water supply valve 10b. The standby step S24 is a step in which water supply by the water supply valve 10b is stopped after the preliminary water supply step S23. The main water supply step S34 is a step in which water is supplied to the tablets J that have been subjected to the preliminary water supply step S23 after the standby step S24. The amount of water supplied in the preliminary water supply step S23 is smaller than the amount of water supplied in the main water supply step S34.

With this configuration, before the main water supply step S34 for dissolving the tablet J, the tablet J is moistened in the preliminary water supply step S23, foams during the standby time, and becomes easy to dissolve. Therefore, the main water supply step S34 makes it easy to completely dissolve the tablet J. Therefore, the washing machine 1 of the present embodiment can prevent undissolved tablets J from remaining in the tablet case 63 after the main water supply step S34.

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

With such a configuration, even if the tablets J are dissolved and flowed into the washing tub 4 in the preliminary water supply step S23, the washing machine 1 of the present embodiment has the ability to prevent fragments of the tablets J from floating in the water and preventing the laundry from being washed. can be prevented from adhering to Therefore, the washing machine 1 of this embodiment can suppress discoloration of laundry.

Additionally, the washing machine 1 of this embodiment includes a drain valve 9 that drains water from the washing tub 4. The first rinsing step (the rinsing step including the main water supply step) includes a detergent rinsing step (steps S20 to S27), a preliminary water supply step S23, a standby step S24, and a main water supply step S34. The detergent rinsing step (steps S20 to S27) is executed before the main water supply step S34. The preliminary water supply step S23 is a step in which water is supplied to the tablets J using the water supply valve 10b. The standby step S24 is a step in which water supply by the water supply valve 10b is stopped after the preliminary water supply step S23. The main water supply step S34 is a step in which water is supplied to the tablets J that have been subjected to the preliminary water supply step S23 after the standby step S24. In the detergent rinsing step, the control unit C opens the water supply valve 10a to supply water (step S20), and then opens the drain valve 9 to perform drainage (step S25).

With such a configuration, the detergent can be discharged from the washing tub 4 after the washing process and before the tablets J are supplied to the washing tub 4, that is, before the main water supply step S34. Therefore, the washing machine 1 of the present embodiment can suppress mixing of the detergent and the tablets J, thereby increasing the effectiveness of the tablets J.

Additionally, the washing machine 1 of this embodiment includes a drain valve 9 that drains water from the washing tub 4. The first rinsing step (rinsing step including the main water supply step) includes a preliminary water supply step S23, a standby step S24, a main water supply step S34, and a tablet rinsing step (steps S50 to S53). The preliminary water supply step S23 is a step in which water is supplied to the tablets J using the water supply valve 10b. The standby step S24 is a step in which water supply by the water supply valve 10b is stopped after the preliminary water supply step S23. The main water supply step S34 is a step in which water is supplied to the tablets J that have been subjected to the preliminary water supply step S23 after the standby step S24. The tablet rinsing step (steps S50 to S53) is executed after the main water supply step S34. The control unit C controls the drain valve 9 after executing the tablet rinsing step so that the lowest water level Y0 (water level) after draining immediately after the tablet rinsing step is lower than the tablet rinsing water level Y5 (water level) in the tablet rinsing step. It is opened to perform drainage (step S54).

With such a configuration, the tablets J can be discharged from the washing tub 4 after the main water supply step S34. Moreover, water supply can be started before the water supply amount in the main water supply step S34 is completely drained, and the water in the washing tub 4 can be completely drained after the tablet rinsing step. Therefore, the washing machine 1 of the present embodiment can more reliably discharge the tablets J from the washing tub 4 while suppressing the amount of water supplied.

Further, the washing method of this embodiment is a washing method using a washing machine 1 into which water-soluble, single-use tablets J (solid preparation) are loaded. The washing machine 1 includes a washing tub 4, a detergent case 60, a tablet case 63 (solid medicine case), a water supply valve 10a (first water supply valve), and a water supply valve 10b (second water supply valve). The washing tub 4 is rotatably provided within the housing 2. The detergent case 60 stores detergent to be supplied to the washing tub 4. The tablet case 63 accommodates the tablets J supplied to the washing tub 4. The water supply valve 10a supplies water to the detergent case 60. The water supply valve 10b supplies water to the tablet case 63. The washing method includes opening the water supply valve 10a and closing the water supply valve 10b in the washing process. The washing method also includes executing a main water supply step S34 in which water is supplied to the tablet J by opening the water supply valve 10b in the rinsing process after the washing process.

By such a method, the washing machine 1 can supply water to the detergent case 60 and water to the tablet case 63 in different steps. Therefore, the detergent and the dissolved product of the tablets J are supplied to the washing tub 4 at different timings. That is, the washing method of this embodiment can improve the sterilization performance for laundry.

Note that the present disclosure is not limited to the embodiments described above, and can be implemented in various other forms.

Although the example in which the washing machine 1 is a vertical washing machine has been described, the washing machine 1 is not limited to this. For example, the washing machine 1 may be a drum type washing machine.

Note that the washing machine 1 may be a washing machine with a drying function. In this case, the washing machine 1 further includes a drying device that circulates drying air into the washing tub 4. In this case, the structure of the manual input unit 6 may be changed depending on the arrangement of the drying device.

Although an example has been described in which Tablet J, which exhibits sterilization performance as a solid agent, is used, the solid agent is not limited to this, and can impart various functionalities (for example, fragrance) to laundry other than sterilization performance. There may be.

Although an example in which Tablet J contains sodium dichloroisocyanurate has been described, Tablet J is not limited to this. Tablet J may also contain other dichloroisocyanurates, such as potassium dichloroisocyanurate. Furthermore, when tablets J of a dichloroisocyanurate salt different from sodium dichloroisocyanurate are put in, the tablets J may be put into the washing tub 4 at the same timing as the softener.

Although an example has been described in which the washing agent supply unit 5 includes the automatic loading unit 7, the present invention is not limited to this, and the washing agent supply unit 5 may include only the manual loading unit 6.

Although an example in which detergent is stored in the detergent case 60 has been described, the present invention is not limited thereto. For example, detergent case 60 may contain bleach.

Although an example has been described in which the tablet J has a disk shape and is placed in the tablet case 63 in a vertical position, the present invention is not limited thereto. For example, the tablet J may have other shapes, and the input port 63a is designed to match the shape of the tablet J. Further, the shape of the input port 63a may be changed so that the tablet J can be input into the tablet case 63 in a horizontal position.

Note that in the embodiment, an example in which the washing machine 1 has the mesh 82 has been described, but the invention is not limited to this. In place of the mesh 82, the washing machine 1 may have something that forms a drainage section or a water passage area having a plurality of water passage holes.

Although an example in which the tablet case 63 has an open structure on one side has been described, the present invention is not limited to this. For example, the tablet case 63 may have a lid facing the side wall 80, and the lid may be removable with respect to the tablet case 63. On the other hand, the tablet case 63 having one side open structure according to the embodiment can be manufactured more easily.

Although an example in which the

water supply nozzles

12 and 13 have straight portions has been described, the present invention is not limited thereto. For example, the

water supply nozzles

12, 13 may extend obliquely from the openings 14, 15.

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

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

Although an example has been described in which the sterilization course includes two rinsing steps, the first rinsing step and the second rinsing step, the present invention is not limited thereto. A disinfection course may include three or more rinsing steps. One or more rinsing steps may be provided prior to the first rinsing step. Alternatively or additionally, one or more rinsing steps may be provided between the first rinsing step and the second rinsing step. Furthermore, one or more rinsing steps may be provided after the second rinsing step. In this case, the main water supply step S34 is performed in the rinsing step before the rinsing step immediately before the final rinsing step, and the supply of the softener is performed in the final rinsing step. With such a configuration, in the final rinsing step, it is possible to more reliably wash off the pieces of tablet J adhering to the laundry, and it is possible to maintain the adhesion of the softener component.

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

Note that the predetermined amount of water supply or drainage in the sterilization course 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 may be determined at the time of manufacture, may be determined by the performance of the washing machine 1, the installation environment, or may be determined by the weight of the laundry detected by the weight sensor 26. Good too.

Although the example in which the stirring mechanism 8 is a pulsator has been described, the present invention is not limited to this. The washing machine 1 may have, as the agitation mechanism 8, other mechanisms capable of agitating the water in the washing tub 4, such as a circulation pump or a rotation mechanism for the water tub 3. Furthermore, the stirring mechanism 8 may rotate in one direction instead of reversing. In the case where the washing machine 1 is a vertical washing machine, the stirring mechanism 8 performs the reversing operation, so that the washing machine 1 can suppress unevenness of the laundry in the washing tub 4.

Although the example in which the washing machine 1 includes the heater 28 has been described, the present invention is not limited to this. The washing machine 1 may include a hot air unit that blows hot air into the washing tub 4 instead of or in addition to the heater 28 .

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

Although an example has been described in which the control unit C performs heating or additional stirring under conditions that make it difficult for the tablet J to dissolve, the present invention is not limited thereto. For example, the control unit C may perform heating, additional stirring, etc. even when the water temperature is high.

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

Although an example has been described in which the detergent rinsing step includes steps S20 to S27, the detergent rinsing step may not include the preliminary water supply step S23 and the standby step S24. That is, the first rinsing step (the rinsing step including the main water supply step) includes a detergent rinsing 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. Good too. Also, the first rinsing step (rinsing step including the main water supply step) includes the detergent rinsing step (steps S20 to S27), the preliminary water supply step S23, the standby step S24, and the main water supply step S34. It is not intended that the standby step S24 be executed redundantly.

The washing machine in the first aspect is a washing machine configured to be able to load a water-soluble, single-use solid agent, and includes a washing tub rotatably provided in a housing, and a washing tub that is supplied to the washing tub. and a detergent case containing detergent. The washing machine also includes a solid agent case that stores a solid agent to be supplied to the washing tub, a first water supply valve that supplies water to the detergent case, a second water supply valve that supplies water to the solid agent case, a first water supply valve, and a first water supply valve that supplies water to the solid agent case. A control unit that controls the second water supply valve. The control unit opens the first water supply valve and closes the second water supply valve in the washing process, and in the rinsing process after the washing process, opens the second water supply valve to supply water to the solid agent. Execute the main water supply step.

As the washing machine according to the second aspect, in the washing machine according to the first aspect, the rinsing step includes at least a first rinsing step and a second rinsing step performed after the first rinsing step, and the control unit: In the first rinsing step, the second water supply valve is opened.

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

In the washing machine according to the fourth aspect, in the washing machine according to the third aspect, the predetermined amount is such that the water level in the washing tub is a water level at which the laundry stored in the washing tub is submerged, and the bath ratio is 10 L/kg or more. This is the water level or the amount that will be the same water level as the washing process.

The washing machine according to a fifth aspect is the washing machine according to any one of the first to fourth aspects, further including an agitation mechanism that agitates the laundry stored in the washing tub, and the control unit drives the agitation mechanism. While the first stirring is being performed, the second water supply valve is opened.

A washing machine according to a sixth aspect is the washing machine according to any one of the first to fifth aspects, further including a drain valve that drains water from the washing tub. 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 rinsing process including the main water supply step is higher than the highest water level of the washing tub in the washing process.

The washing machine according to the seventh aspect is the washing machine according to the second aspect, further including a drain valve that drains water from the washing tub. 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 rinsing process is higher than the highest water level of the washing tub in the second rinsing process.

The washing machine according to the eighth aspect is the washing machine according to the second aspect, further including a softener supply mechanism that supplies the softener to the washing tub, and the control unit controls the softener supply mechanism in the second rinsing step. It is driven to supply fabric softener to the washing tub.

The washing machine according to the ninth aspect is the washing machine according to the fifth aspect, further including a water temperature detection section that detects the temperature of the water supplied to the washing tub. In the rinsing process including the main water supply step, the control unit drives the stirring mechanism to further perform second stirring according to the water temperature detected by the water temperature detection unit.

A washing machine according to a tenth aspect is the washing machine according to any one of the first to ninth aspects, and includes a water temperature detection section that detects the temperature of water supplied to the washing tub, and a water temperature detection section that heats the water supplied to the washing tub. The apparatus further includes a heater. In the rinsing process including the main water supply step, the control unit executes heating by the heater according to the water temperature detected by the water temperature detection unit.

A washing machine according to an eleventh aspect is the washing machine according to any one of the first to tenth aspects, further including a water temperature detection section that detects the temperature of water supplied to the washing tub. In the rinsing process including the main water supply step, the control unit opens the second water supply valve to additionally supply water in accordance with the water temperature detected by the water temperature detection unit.

A 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 section that detects the flow rate of water supplied to the washing tub. In the rinsing process including the main water supply step, the control unit opens the second water supply valve to additionally supply water in accordance with the flow rate detected by the flow rate detection unit.

In the washing machine according to the second aspect as the washing machine according to the thirteenth aspect, the control unit intermittently opens the second water supply valve multiple times in the second rinsing step.

In the washing machine according to the fourteenth aspect, in the washing machine according to any one of the first to thirteenth aspects, the rinsing step including the main water supply step includes a preliminary water supply step in which water is supplied to the solid agent by the second water supply valve. include. In addition, the rinsing process including the main water supply step includes a standby step in which water supply by the second water supply valve is stopped after the preliminary water supply step, and a main step in which water is supplied to the solid agent that has undergone the preliminary water supply step after the standby step. a water supply step; The amount of water supplied in the preliminary water supply step is less than the amount of water supplied in the main water supply step.

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

A washing machine according to a sixteenth aspect is the washing machine according to any one of the first to thirteenth aspects, further including a drain valve that drains water from the washing tub. The rinsing step including the main water supply step includes a detergent rinsing step performed before the main water supply step, and a preliminary water supply step in which water is supplied to the solid agent by the second water supply valve. In addition, the rinsing process including the main water supply step includes a standby step in which water supply by the second water supply valve is stopped after the preliminary water supply step, and a main step in which water is supplied to the solid agent that has undergone the preliminary water supply step after the standby step. a water supply step; In the detergent rinsing step, the control unit opens the first water supply valve to supply water, and then opens the drain valve to discharge water.

A washing machine according to a seventeenth aspect is the washing machine according to any one of the first to thirteenth aspects, further including a drain valve that drains water from the washing tub. The rinsing process including the main water supply step includes a preliminary water supply step in which the solid agent is supplied with water by the second water supply valve, and a standby step in which water supply by the second water supply valve is stopped after the preliminary water supply step. Further, the rinsing step including the main water supply step includes a main water supply step of supplying water to the solid dosage form that has undergone the preliminary water supply step after the standby step, and a tablet rinsing step that is executed after the main water supply step. . The control unit executes the tablet rinsing step and then opens the drain valve to perform drainage so that the water level after draining immediately after the tablet rinsing step is lower than the water level in the tablet rinsing step.

The washing method in the 18th aspect is a washing method using a washing machine into which a water-soluble, single-use solid agent is added. A washing machine consists of a washing tub rotatably provided in a housing, a detergent case containing detergent to be supplied to the washing tub, a solid agent case containing a solid agent to be supplied to the washing tub, and a detergent case. It includes a first water supply valve that supplies water and a second water supply valve that supplies water to the solid agent case. The washing method includes opening the first water supply valve and closing the second water supply valve in the washing process, and opening the second water supply valve and supplying water to the solid agent in the rinsing process after the washing process. and performing the main water supply step.

Although this disclosure has been fully described with reference to preferred embodiments and with reference to the accompanying drawings, various variations and modifications will become apparent to those skilled in the art. It is to be understood that such variations and modifications are included insofar as they do not depart from the scope of the disclosure as defined by the appended claims.

The washing machine of the present disclosure is useful as a domestic washing machine, a commercial washing machine, or any type of washer/dryer (eg, a domestic drum-type washing machine).

1 Washing machine 2 Housing 3 Water tank 4 Washing tank 5 Washing agent supply unit 6 Manual loading unit 7 Automatic loading unit 8 Stirring mechanism 9 Drain valve 10 Water supply member 10a Water supply valve 10b Water supply valve 10c Water supply valve 11 Channel member 12 Water supply nozzle 13 Water supply nozzle 14 Opening 15 Opening 16 Opening 20 Opening 21 Door 25 Water level sensor 26 Weight sensor 27 Water temperature sensor 28 Heater 40 Through hole 41 Opening 50 Unit case 50a Lid 60 Detergent case 60a Opening 61 Softener case 61a Opening 62 Powder detergent case 62a Opening 63 Tablet case 63a Inlet 64 Main body 64a Bottom 65 Inlet member 65a Inlet 66 Inlet member 66a Inlet 67 Space 67a Opening 70 Tank 71 Tank 73 Liquid agent discharge channel 74 Liquid agent discharge channel 74a Suction port 77 Accommodation space 78 Accommodation space 78a Bottom surface 80 Side wall 81 Peripheral wall 82 Mesh 88 Protrusion 89 Outer wall A2 Feeding direction C Control part D0 Diameter F1 Path F2 Path F3 Path J Tablet K Width direction K10 Accommodation space L Front-rear direction L1 Front side L2 Rear side Q1 Water supply amount T0 Thickness Y0 Minimum water level Y1 Washing water level Y2 Detergent rinsing water level Y3 Water level before sterilization Y4 Water level during sterilization Y5 Tablet rinsing water level Y6 Final rinsing water level

Claims

A washing machine configured to be able to load a water-soluble single-use solid agent,
A washing tub rotatably provided in the housing,
a detergent case containing detergent to be supplied to the washing tub;
a solid agent case accommodating the solid agent supplied to the washing tub;
a first water supply valve that supplies water to the detergent case;
a second water supply valve that supplies water to the solid agent case;
A control unit that controls the first water supply valve and the second water supply valve,
The control unit includes:
In the washing step, the first water supply valve is opened and the second water supply valve is closed,
In the rinsing step after the washing step, opening the second water supply valve and performing a main water supply step of supplying water to the solid agent;
washing machine.
The rinsing step includes at least a first rinsing step and a second rinsing step performed after the first rinsing step,
The control unit opens the second water supply valve in the first rinsing step.
A washing machine according to claim 1.
The control unit, before opening the second water supply valve, opens the first water supply valve to supply a predetermined amount or more of water to the washing tub.
A washing machine according to claim 2.
The predetermined amount is an amount at which the water level in the washing tub is at a water level at which the laundry stored in the washing tub is submerged, at a water level at which the bath ratio is 10 L/kg or more, or at the same water level as in the washing process.
A washing machine according to claim 3.
further comprising an agitation mechanism that agitates the laundry stored in the washing tub,
The control unit opens the second water supply valve while driving the stirring mechanism to perform the first stirring.
A washing machine according to claim 1.
further comprising a drain valve for draining water from the washing tub,
The control unit controls the first water supply valve, the second water supply valve, and the second water supply valve so that the highest water level of the washing tub in the rinsing process including the main water supply step is higher than the highest water level of the washing tub in the washing process. open the drain valve,
A washing machine according to claim 1.
further comprising a drain valve for draining water from the washing tub,
The control unit controls the first water supply valve, the second water supply valve, and the drainage so that the highest water level of the washing tub in the first rinsing step is higher than the highest water level of the washing tub in the second rinsing step. open the valve,
A washing machine according to claim 2.
further comprising a softener supply mechanism that supplies softener to the washing tub,
In the second rinsing step, the control unit drives the softener supply mechanism to supply softener to the washing tub.
A washing machine according to claim 2.
further comprising a water temperature detection unit that detects the temperature of water supplied to the washing tub,
The control unit further performs second stirring by driving the stirring mechanism according to the water temperature detected by the water temperature detection unit in the rinsing process including the main water supply step.
A washing machine according to claim 5.
further comprising: a water temperature detection unit that detects the temperature of water supplied to the washing tub; and a heater that heats the water supplied to the washing tub;
The control unit executes heating by the heater in the rinsing process including the main water supply step, according to the water temperature detected by the water temperature detection unit.
A washing machine according to claim 1.
further comprising a water temperature detection unit that detects the temperature of water supplied to the washing tub,
In the rinsing process including the main water supply step, the control unit opens the second water supply valve to additionally supply water according to the water temperature detected by the water temperature detection unit.
A washing machine according to claim 1.
further comprising a flow rate detection unit that detects the flow rate of water supplied to the washing tub,
In the rinsing process including the main water supply step, the control unit opens the second water supply valve to additionally supply water according to the flow rate detected by the flow rate detection unit.
A washing machine according to claim 1.
The control unit intermittently opens the second water supply valve a plurality of times in the second rinsing step.
A washing machine according to claim 2.
The rinsing process including the main water supply step includes:
a preliminary water supply step of supplying water to the solid agent by the second water supply valve;
After the preliminary water supply step, a standby step of stopping water supply by the second water supply valve;
after the standby step, the main water supply step of supplying water to the solid agent that has undergone the preliminary water supply step;
The amount of water supplied in the preliminary water supply step is less than the amount of water supplied in the main water supply step,
A washing machine according to any one of claims 1 to 13.
The preliminary water supply step is performed when the water level of the washing tub is equal to or higher than a predetermined water level.
The washing machine according to claim 14.
further comprising a drain valve for draining water from the washing tub,
The rinsing process including the main water supply step includes:
a detergent rinsing step performed before the main water supply step;
a preliminary water supply step of supplying water to the solid agent by the second water supply valve;
After the preliminary water supply step, a standby step of stopping water supply by the second water supply valve;
after the standby step, the main water supply step of supplying water to the solid agent that has undergone the preliminary water supply step;
In the detergent rinsing step, the control unit opens the first water supply valve to supply water, and then opens the drain valve to perform drainage.
A washing machine according to claim 1.
further comprising a drain valve for draining water from the washing tub,
The rinsing process including the main water supply step includes:
a preliminary water supply step of supplying water to the solid agent by the second water supply valve;
After the preliminary water supply step, a standby step of stopping water supply by the second water supply valve;
After the standby step, the main water supply step of supplying water to the solid agent that has undergone the preliminary water supply step;
a tablet rinsing step performed after the main water supply step,
The control unit opens the drain valve and executes drainage after executing the tablet rinsing step so that the water level after draining immediately after the tablet rinsing step is lower than the water level in the tablet rinsing step.
A washing machine according to claim 1.
A washing method using a washing machine containing a water-soluble single-use solid agent, the method comprising:
The washing machine includes:
A washing tub rotatably provided in the housing,
a detergent case containing detergent to be supplied to the washing tub;
a solid agent case accommodating the solid agent supplied to the washing tub;
a first water supply valve that supplies water to the detergent case;
a second water supply valve that supplies water to the solid agent case;
In the washing step, opening the first water supply valve and closing the second water supply valve;
A washing method comprising: in a rinsing step after the washing step, performing a main water supply step of opening the second water supply valve and supplying water to the solid agent.