washing machine

Abstract

The washing machine disclosed herein includes a housing, a washing tub, a water conduit, a liquid container, an automatic liquid dispensing device, and a control unit. The washing tub is provided inside the housing and stores laundry. The water conduit supplies water introduced from a water supply valve to the washing tub. The liquid container stores liquid therein. The automatic liquid dispensing device injects and transports the liquid stored in the liquid container into the washing tub. The water conduit includes a first water channel for supplying water to the washing tub without passing through the automatic liquid dispensing device. The water supply valve includes a first valve for supplying water to the first water channel. The control unit drives the automatic liquid dispensing device to open the first valve.

Description

Technical Field

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

[0002] Patent Document 1 discloses a washing machine equipped with an automatic liquid agent feeding device.

[0003] The washing machine disclosed in Patent Document 1 includes a liquid container for storing liquid, an automatic liquid dispensing device for automatically dispensing liquid from the container into a washing tub, and a water supply valve connected to the automatic liquid dispensing device via a water path. After the automatic liquid dispensing device is driven to dispense liquid into the washing tub, the water supply valve is opened to supply water into the automatic liquid dispensing device.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: International Publication No. 2019 / 039140 Summary of the Invention

[0007] The present disclosure provides a washing machine equipped with an automatic liquid agent feeding device, which can efficiently perform a water supply operation accompanying a washing operation.

[0008] The washing machine disclosed herein includes a housing, a washing tub, a water conduit, a liquid container, an automatic liquid dispensing device, and a control unit. The washing tub is disposed within the housing and accommodates laundry. The water conduit supplies water introduced from a water supply valve to the washing tub. The liquid container stores liquid therein. The automatic liquid dispensing device injects and transports the liquid stored in the liquid container into the washing tub. The water conduit includes a first water channel for supplying water to the washing tub without passing through the automatic liquid dispensing device, and the water supply valve includes a first valve for supplying water to the first water channel. The control unit drives the automatic liquid dispensing device to open the first valve.

[0009] The washing machine disclosed herein performs an automatic liquid agent feeding operation using an automatic liquid agent feeding device and can efficiently perform a water supply operation accompanying a washing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is an external perspective view showing the structure of the washing machine according to the first embodiment with the lid closed.

[0011] Figure 2 It is an external perspective view showing the structure of the washing machine according to the first embodiment with the lid open.

[0012] Figure 3This is an external perspective view showing a state in which the detergent box, the detergent container, and the softener container are pulled out, showing the water supply unit and its peripheral structure of the washing machine according to the first embodiment.

[0013] Figure 4 This is a rear view showing the water supply unit of the washing machine according to Embodiment 1 and the surrounding structure thereof.

[0014] Figure 5 This is an exploded perspective view showing the water supply unit of the washing machine according to Embodiment 1 and the surrounding structure thereof.

[0015] Figure 6 It is a plan view showing the water supply unit and its surrounding structure of the washing machine according to the first embodiment, with the flow path cover portion removed.

[0016] Figure 7 This is a plan view showing a cross section of the water supply unit and its surroundings of the washing machine according to the first embodiment, with the flow path cover removed, in a state where the detergent box, the detergent container, and the softener container are removed.

[0017] Figure 8 yes Figure 7 The water supply unit and its surroundings are shown in the F-F cross-sectional view.

[0018] Figure 9 This is a plan view showing the water supply unit and its surrounding structure of the washing machine according to the first embodiment with the flow path cover removed, in a state where the detergent box, the detergent container, and the softener container are pulled out.

[0019] Figure 10 yes Figure 7 The BB sectional view of the water supply unit and its surroundings is shown.

[0020] Figure 11 yes Figure 7 The water supply unit and its surroundings are shown in an EE cross-sectional view.

[0021] Figure 12 yes Figure 7 The C-C cross-sectional view of the water supply unit and its surroundings is shown.

[0022] Figure 13 yes Figure 7 The A-A cross-sectional view of the water supply unit and its surroundings is shown.

[0023] Figure 14 yes Figure 7 The D-D cross-sectional view of the water supply unit and its surroundings is shown.

[0024] Figure 15 This is an external front view showing the structure of the water supply unit of the washing machine according to the first embodiment, with the detergent box, the detergent container, and the softener container removed.

[0025] Figure 16 This is a timing chart of the washing operation of the washing machine according to the first embodiment.

[0026] Figure 17 It is an external perspective view showing the structure of the washing machine according to the second embodiment with the lid closed.

[0027] Figure 18 It is an external perspective view showing the structure of the washing machine according to the second embodiment with the lid open.

[0028] Figure 19 This is an external perspective view showing a state in which the detergent box, the detergent container, and the softener container are pulled out, showing a water supply unit and its peripheral structure of the washing machine according to Embodiment 2.

[0029] Figure 20 It is a rear view showing the water supply unit of the washing machine according to the second embodiment and the structure of its periphery.

[0030] Figure 21 This is an exploded perspective view showing a water supply unit of a washing machine according to a second embodiment and its surrounding structure.

[0031] Figure 22 It is a plan view showing the water supply unit and its surrounding structure of the washing machine according to the second embodiment, with the flow path cover portion removed.

[0032] Figure 23 This is a plan view showing a cross section of the water supply unit and its surroundings of the washing machine according to the second embodiment, with the flow path cover removed, in a state where the detergent box, the detergent container, and the softener container are removed.

[0033] Figure 24 yes Figure 23 The M-M cross-sectional view of the water supply unit and its surroundings is shown.

[0034] Figure 25 This is a plan view showing the water supply unit and its surrounding structure of the washing machine according to the second embodiment with the flow path cover removed, in a state where the detergent box, the detergent container, and the softener container are pulled out.

[0035] Figure 26 yes Figure 23 The H-H cross-sectional view of the water supply unit and its surroundings is shown.

[0036] Figure 27 yes Figure 23 LL cross-sectional view of the water supply unit and its surroundings shown.

[0037] Figure 28 yes Figure 23 The J-J cross-sectional view of the water supply unit and its surroundings is shown.

[0038] Figure 29 yes Figure 23 The G-G cross-sectional view of the water supply unit and its surroundings is shown.

[0039] Figure 30 yes Figure 23 The K-K cross-sectional view of the water supply unit and its surroundings is shown.

[0040] Figure 31 It is an external front view showing the structure of the water supply unit of the washing machine according to the second embodiment, with the detergent box, the detergent container, and the softener container removed.

[0041] Figure 32 This is a timing chart of the washing operation of the washing machine according to the second embodiment.

[0042] Figure 33 It is an external perspective view showing the structure of the washing machine according to the third embodiment with the lid closed.

[0043] Figure 34 It is an external perspective view showing the structure of the washing machine according to the third embodiment with the lid open.

[0044] Figure 35 This is an external perspective view showing a water supply unit and its surrounding structure of a washing machine according to a third embodiment, with the detergent box, detergent container, and softener container being pulled out.

[0045] Figure 36 It is a rear view showing the water supply unit of the washing machine according to the third embodiment and the structure of its periphery.

[0046] Figure 37 This is an exploded perspective view showing a water supply unit of a washing machine according to a third embodiment and its surrounding structure.

[0047] Figure 38 It is a plan view showing the water supply unit and its surrounding structure of the washing machine according to the third embodiment, with the flow path cover portion removed.

[0048] Figure 39 This is a plan view showing a cross section of the water supply unit and its surroundings of the washing machine according to the third embodiment, with the flow path cover removed, in a state where the detergent box, the detergent container, and the softener container are removed.

[0049] Figure 40 yes Figure 39 The water supply unit and its surroundings are shown in an S-S cross-sectional view.

[0050] Figure 41This is a plan view showing the water supply unit and its surrounding structure of the washing machine according to the third embodiment with the flow path cover removed, in a state where the detergent box, the detergent container, and the softener container are pulled out.

[0051] Figure 42 yes Figure 39 The O-O cross-sectional view of the water supply unit and its surroundings is shown.

[0052] Figure 43 yes Figure 39 The RR cross-sectional view of the water supply unit and its surroundings is shown.

[0053] Figure 44 yes Figure 39 The P-P cross-sectional view of the water supply unit and its surroundings is shown.

[0054] Figure 45 yes Figure 39 The N-N cross-sectional view of the water supply unit and its surroundings is shown.

[0055] Figure 46 yes Figure 39 The Q-Q cross-sectional view of the water supply unit and its surroundings is shown.

[0056] Figure 47 It is an external front view showing the structure of the water supply unit of the washing machine according to the third embodiment, with the detergent box, the detergent container, and the softener container removed.

[0057] Figure 48 It is an external perspective view showing the structure of a detergent container of a washing machine according to a third embodiment.

[0058] Figure 49A This is a plan view showing a cross section of the water supply unit and its surroundings of the washing machine according to the third embodiment with the flow path cover portion removed in a state where a detergent container is stored.

[0059] Figure 49B This is a plan view showing a cross section of the water supply unit and its surroundings of the washing machine according to the third embodiment, with the flow path cover removed, in a state where the detergent container is pulled out.

[0060] Figure 50 yes Figure 49A The T-T cross-sectional view of the water supply unit and its surroundings is shown.

[0061] Figure 51 yes Figure 49B The W-W cross-sectional view of the water supply unit and its surroundings is shown.

[0062] Figure 52 yes Figure 49A A U-U cross-sectional view of the water supply unit and its surroundings is shown.

[0063] Figure 53 yes Figure 49B The water supply unit and its surroundings are shown in a V-V cross-sectional view.

[0064] Figure 54 It is a plan view showing the structure of the lower portion of the flow path of the washing machine according to the third embodiment.

[0065] Figure 55 This is a timing chart of the washing operation of the washing machine according to the third embodiment. DETAILED DESCRIPTION

[0066] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0067] (Implementation Method 1)

[0068] Below, use Figures 1 to 16 , the washing machine 100 according to the first embodiment will be described.

[0069] [1-1. Structure]

[0070] [1-1-1. Structure of a washing machine]

[0071] Figure 1 1 is a perspective view showing the structure of the washing machine 100 according to the first embodiment, with the lid 700 closed. Figure 2 700 is an external perspective view showing the structure of the washing machine 100 with the cover 700 opened. Figure 1 and Figure 2 As shown in FIG, there is a case where the vertical direction in the state where the washing machine 100 is installed is described as the up-down direction. Figure 1 and Figure 2 In the description, the side of washing machine 100 where operating unit 800 is located is referred to as the rear side, and the opposite side is referred to as the front side. In other words, a user typically stands in front of washing machine 100, places laundry such as clothes into washing machine 100, and performs various operations to operate washing machine 100. Furthermore, the laundry disclosed herein is not limited to clothing; for example, it includes cloth or leather products such as bedding, curtains, carpets, and shoes, as well as other items that can be washed in various known washing machines.

[0072] like Figure 1 and Figure 2As shown, the washing machine 100 includes a housing 600, a cover 700, an operating unit 800, and a control unit 900. The washing machine 100 is a so-called vertical washing machine that can be loaded with laundry from the upper surface side of the housing 600 when in the set state. The housing 600 includes a lower housing 610 and an upper housing 620. A washing tank 500 is housed in the lower housing 610. The washing tank 500 is a cylindrical body with an opening at the top, which stores laundry and performs a washing operation to clean the laundry. In other words, the washing tank 500 is provided inside the housing 600 to store laundry. The washing operation may also be an operation performed by the washing tanks of various known washing machines. The principle of embodiment 1 is not limited to a specific washing operation performed by the washing tank 500.

[0073] The upper housing 620 is disposed above the lower housing 610. A laundry inlet 621 is formed in the upper housing 620 and communicates with the washing tub 500. A lid 700 is attached to the rear of the upper housing 620, covering the inlet 621 in a removable manner. When the user rotates the lid 700 upward, the washing tub 500 is exposed through the inlet 621. The user can then place laundry into the washing tub 500 through the inlet 621.

[0074] An operation unit 800 is provided at the rear of the upper housing 620 and at a position behind the inlet 621. The user can operate the operation unit 800 to set various operations of the washing tub 500.

[0075] A water supply port 200 is provided at the rear of the operation unit 800 , and a water supply hose 210 is connected to the water supply port 200 to introduce tap water from a faucet.

[0076] The control unit 900 is provided in the housing 600. The control unit 900 controls the entire operation of the washing machine 100 according to the operation of the operation unit 800 by the user. For example, the control unit 900 controls the water supply valve 310 (see Figure 3 ) and liquid agent automatic feeding device 301 (refer to Figure 3 A computer system is provided, comprising a processor and a memory. The processor executes a program stored in the memory, thereby enabling the computer system to function as a control device. The program executed by the processor is pre-recorded in the computer system's memory, but may also be provided by recording it on a non-temporary recording medium such as a memory card, or by providing it via a telecommunications line such as the Internet.

[0077] like Figure 2 As shown, the detergent container 450 , the softener container 460 , and the detergent box 400 are arranged so that their front surfaces are flush with each other when housed in the water supply unit 300 .

[0078] Figure 34 is a perspective view showing the appearance of the water supply unit 300 and its surrounding structures, with the detergent box 400, the detergent container 450 and the softener container 460 being pulled out. Figure 3 As shown, the detergent container 450 and the softener container 460 are configured to store an amount of liquid agent sufficient for multiple operations. Specifically, the detergent container 450 stores liquid detergent, and the softener container 460 stores softener. That is, the detergent container 450 and the softener container 460 are examples of liquid agent containers of the present disclosure that internally store liquid agents. The detergent container 450 has a detergent container inlet 451 for injecting the stored liquid detergent, and the softener container 460 has a softener container inlet 461 for injecting the stored softener. The upper surfaces of the detergent container inlet 451 and the softener container inlet 461 are open to allow injection of liquid agents.

[0079] Furthermore, detergent container 450 is provided with a detergent container remaining scale 450a, and softener container 460 is provided with a softener container remaining scale 460a. Detergent container remaining scale 450a and softener container remaining scale 460a are each made of a transparent material, allowing the user to visually check the remaining amount of the liquid agent.

[0080] On the other hand, the detergent box 400 is used for the user to put in the amount of detergent required for one operation. The detergent box 400 is provided with a powder detergent manual input part 410 for inputting powder detergent, a liquid detergent manual input part 420 for inputting liquid detergent, and a softener manual input part 430 for inputting softener.

[0081] The cover 700 is partially transparent, so that the user can visually check the detergent container remaining scale 450a and the softener container remaining scale 460a even when the cover 700 is closed, and confirm the remaining amount of liquid stored in the detergent container 450 and the softener container injection portion 461.

[0082] [1-1-2. Water supply unit]

[0083] Figure 4 3 is a rear view showing the structure of the water supply unit 300 and its surroundings. Figure 5 : is an exploded perspective view showing the water supply unit 300 and its surrounding structure. Figure 5 As shown, the water supply unit 300 mainly includes a water supply unit housing 320 formed in a substantially box shape, a flow path cover 340 covering the upper surface of the water supply unit housing 320 , and a flow path lower portion 370 installed on the lower bottom of the water supply unit housing 320 .

[0084] like Figure 3 and Figure 4As shown, when viewed from the back of the water supply unit housing 320, a water supply valve 310 is installed on the left side to freely open and close the water introduced from the water supply port 200. When the water supply valve 310 is open, the water introduced from the water supply valve 310 is introduced into the water supply unit housing 320.

[0085] A bus pump 314 is located in the center of the back of the water supply unit housing 320. This pump draws water from outside the washing machine 100 via a hose (not shown). The bus pump 314 is secured to the flow channel cover 340 with screws and is directly connected to the first water conduit 321, described later, via a bus pump water inlet 333. The bus pump 314 begins suction and discharge operations by supplying water from the first water conduit 321.

[0086] like Figure 5 and Figure 6 As shown, the water supply unit housing 320 is formed into a generally box-like shape that is open forward. The water supply unit housing 320 includes a container storage portion 360 and a detergent box storage portion 350 as its internal space. The container storage portion 360 stores the detergent container 450 and the softener container 460, allowing them to be independently pulled out. The detergent box storage portion 350 stores the detergent box 400, allowing it to be independently pulled out.

[0087] The detergent box flow path portion 330 is provided as an upper surface of the detergent box storage portion 350 , and a first water conduit path 321 and a second water conduit path 322 , which will be described later, are formed in the detergent box flow path portion 330 .

[0088] like Figure 3 and Figure 4 As shown, an automatic liquid agent injector 301 is mounted on the right side of the water supply unit housing 320 when viewed from the back. The automatic liquid agent injector 301 injects and delivers liquid stored in the detergent container 450 and the softener container 460 into the washing tub 500. The automatic liquid agent injector 301 will be described later.

[0089] [1-1-3. Water Conveyance Path]

[0090] like Figure 4 and Figure 5 As shown, the water supply valve 310 includes three on-off valves, namely a first water guide cylinder 311 , a second water guide cylinder 312 , and a third water guide cylinder 313 , and each on-off valve can be opened and closed independently.

[0091] Figure 6 It is a plan view showing the water supply unit 300 and its surrounding structure with the flow path cover 340 removed. Figure 7It is a plan view showing a cross section of the water supply unit 300 and its surroundings with the flow path cover 340 removed in a state where the detergent box 400 , the detergent container 450 , and the softener container 460 are removed. Figure 8 yes Figure 7 The water supply unit 300 and its surroundings are shown in a cross-sectional view taken along line FF. Figure 9 1 is a plan view showing the water supply unit 300 and its surrounding structure with the flow path cover 340 removed, in a state where the detergent box 400, the detergent container 450, and the softener container 460 are pulled out. Figure 10 yes Figure 7 The water supply unit 300 and its surroundings are shown in a BB cross-sectional view.

[0092] like Figures 6 to 10 As shown, the water supply unit housing 320 includes a first water conduit 321, a second water conduit 322, and a third water conduit 323, which supply water introduced from the water supply valve 310 to the washing tub 500. The water supply valve 310 is directly connected to the first, second, and third water conduit 321, 322, and 323. The first, second, and third water conduit 321, 322, and 323 are branched and independently connected to the first, second, and third water conduit cylinders 311, 312, and 313, respectively. Specifically, the first water conduit cylinder 311 is connected to the first water conduit 321, the second water conduit cylinder 312 is connected to the second water conduit 322, and the third water conduit cylinder 313 is connected to the third water conduit 323.

[0093] [1-1-4. Detergent Box, First Water Conveying Path, Second Water Conveying Path]

[0094] like Figure 3 and Figures 6 to 9 As shown, the first water conduit 321 and the second water conduit 322 guide the water supplied from the first water conduit cylinder 311 and the second water conduit cylinder 312 to the detergent box flow path 330 and inject it into the detergent box 400 located below.

[0095] As described above, the powder detergent manual input portion 410 , the liquid detergent manual input portion 420 , and the softener manual input portion 430 are provided inside the detergent box 400 , so that the user can input the respective detergents.

[0096] The first water conduit 321 is provided with a powder detergent inlet 331 formed above the manual powder detergent dispenser 410 to provide vertical communication, and a liquid detergent inlet 332 formed above the manual liquid detergent dispenser 420 to provide vertical communication. The second water conduit 322 is provided with a softener inlet 334 formed above the manual softener dispenser 430 to provide vertical communication.

[0097] Manual powder detergent dispenser 410, manual liquid detergent dispenser 420, and manual softener dispenser 430 are each provided with a drain port (not shown) for discharging the accumulated liquid downward. Liquid discharged from the drain port falls toward lower flow path portion 370. Lower flow path portion 370 serves as a drain port, discharging the liquid into washing tub 500.

[0098] [1-1-5. Detergent container, automatic dispensing device, and third water conduit]

[0099] Figure 11 yes Figure 7 The water supply unit 300 and its surroundings are shown in the EE cross-sectional view. Figure 12 yes Figure 7 The water supply unit 300 and its surroundings are shown in the CC cross-sectional view. Figure 13 yes Figure 7 The water supply unit 300 and its surroundings are shown in the AA cross-sectional view. Figure 14 yes Figure 7 The water supply unit 300 and its surroundings are shown in DD cross-sectional view. Figure 15 This is a front view showing the structure of the water supply unit 300 , with the detergent box 400 , the detergent container 450 , and the softener container 460 removed.

[0100] like Figure 6 and Figures 10 to 15 As shown, the third water conduit 323 is formed in a generally horizontal direction along the rear surface of the water supply unit housing 320 and opens toward the rear surface at a washing path water conduit port 324. The washing path water conduit port 324 connects to a path 325 within the automatic dispensing device (described later), thereby connecting the third water conduit 323 to the automatic liquid dispensing device 301. The automatic liquid dispensing device 301 is located on the rear surface of the container storage portion 360. Furthermore, as described later, the automatic liquid dispensing device 301 is connected to the detergent container 450 and softener container 460 housed in the container storage portion 360.

[0101] like Figure 9As shown, a detergent container insertion port 302 is provided on the back side of the detergent container 450, and a detergent container check valve (not shown) is provided inside the detergent container insertion port 302, which is opened by pushing in. Similarly, a softener container insertion port 303 and a softener container check valve (not shown) are provided on the back side of the softener container 460. The detergent container 450 is configured such that when installed in the container storage portion 360, the automatic detergent injection port 452 (described later) is inserted into the detergent container insertion port 302, the detergent container check valve opens, and liquid detergent can be supplied. Similarly, the softener container 460 is configured such that when installed in the container storage portion 360, the automatic softener injection port 462 (described later) is inserted into the softener container insertion port 303, the softener container check valve opens, and softener can be supplied.

[0102] A detergent automatic dispensing connection 360a and a softener automatic dispensing connection 360b are provided on the inner back surface of the container storage portion 360. The detergent automatic dispensing connection 360a and the softener automatic dispensing connection 360b surround the detergent automatic dispensing insertion port 452 and the softener automatic dispensing insertion port 462 of the liquid agent automatic dispensing device 301.

[0103] The automatic liquid agent dispensing device 301 includes an automatic detergent dispensing port 452 and an automatic softener dispensing port 462, a three-way valve 380, a pump unit 390, and an internal path 325 within the automatic dispensing device. The three-way valve 380 switches the paths for the liquid detergent, softener, and water. The pump unit 390 draws in and dispenses the liquid agent. The internal path 325 connects the three-way valve 380 and the pump unit 390.

[0104] like Figure 9 As shown, the automatic detergent insertion port 452 and the automatic softener insertion port 462 are formed to protrude forward. When the detergent container 450 and the softener container 460 are stored in the container storage portion 360, the automatic detergent insertion port 452 is connected to the detergent container 450, and the automatic softener insertion port 462 is connected to the softener container 460.

[0105] The three-way valve 380 includes a detergent three-way valve 381 and a softener three-way valve 382, ​​which are configured to be independently openable and closed. The detergent three-way valve 381 is arranged to communicate with the detergent automatic insertion port 452. In addition, the softener three-way valve 382 is arranged to communicate with the softener automatic insertion port 462. Figure 13As shown, the downstream side of three-way valve 380 is connected to pump unit 390 via automatic feeder internal path 325. Thus, three-way valve 380 is connected to automatic feeder internal path 325, automatic detergent feeder insertion port 452, automatic softener feeder insertion port 462, and pump unit 390. Washing machine 100 can control the flow of detergent, softener, and water by opening and closing three-way valve 381 for detergent and three-way valve 382 for softener.

[0106] Pump unit 390 includes a pump flow path 391, a cylinder 397, and a piston 395. Pump flow path 391 is provided between pump unit inlet 392a and pump unit outlet 392b. Cylinder 397 is provided midway in pump flow path 391. Piston 395 moves up and down using the rotational drive force of a motor (not shown).

[0107] An inlet check valve 393 is provided at the pump unit inlet 392a, and an outlet check valve 394 is provided at the pump unit outlet 392b.

[0108] The inlet check valve 393 is configured to be opened by a negative pressure operation of the piston 395 , and the outlet check valve 394 is configured to be opened by a positive pressure operation of the piston 395 .

[0109] The automatic feeding device internal path 325 is connected to the flow path lower portion 370 via the cleaning path outflow port 326 at a location downstream of the pump unit 390 .

[0110] [1-2. Action]

[0111] The operation of washing machine 100 configured as described above will be described below.

[0112] [1-2-1. Water flow during washing operation when using the automatic start function]

[0113] exist Figure 6 、 Figure 8 and Figures 10 to 15 In FIG. 1 , the flow of water supplied from the first water conduit tube 311 is defined as X, the flow of water supplied from the second water conduit tube 312 is defined as Y, and the flow of water supplied from the third water conduit tube 313 is defined as Z.

[0114] Figure 16 is a timing diagram of the washing operation of the washing machine 100. Figure 16As shown, at the start of the cleaning process, the automatic liquid agent injection device 301 is activated to automatically inject liquid agent. Specifically, with the third water guide tube 313 closed, the detergent three-way valve 381, part of the three-way valve 380, is opened, connecting the detergent container 450 to the path of the pump unit 390. The pump unit 390 rotates the motor, which moves the piston 395 up and down, sucking liquid detergent from the pump unit inlet 392a and discharging it from the pump unit outlet 392b. The discharged detergent reaches the lower portion 370 of the flow path.

[0115] While piston 395 is being driven, first water conduit 311 opens, and water supply to first water conduit 321 begins. Like water flow X, water introduced into first water conduit 321 flows through powder detergent inlet 331, liquid detergent inlet 332, and bus pump inlet 333, and is then injected into manual powder detergent dispenser 410, manual liquid detergent dispenser 420, and bus pump 314. Water injected into manual powder detergent dispenser 410 and manual liquid detergent dispenser 420 flows down through the outlet toward lower flow path 370, dissolving the liquid detergent within lower flow path 370 and injecting it into washing tub 500. Water supply to first water conduit 321 continues until the start of the conduit cleaning process, described later. This allows water to be supplied to washing tub 500 simultaneously with automatic detergent injection, thereby shortening the time required for water supply during the cleaning process. Alternatively, water supply to first water conduit 321 can be intermittent.

[0116] The liquid agent is sucked and discharged intermittently by the pump unit 390. While the piston 395 is stopped, the detergent delivery operation is performed.

[0117] At the start of the detergent dispensing operation, the detergent three-way valve 381 is closed, blocking the path between the detergent container 450 and the pump unit 390. The path from the third water conduit 313 to the automatic liquid dispensing device 301 is now open. Next, the third water conduit 313 of the water supply valve 310 is opened. Like water flow Z, water introduced from the third water conduit 313 flows through the third water conduit 323, through the wash path water conduit 324, into the automatic dispensing device internal path 325, and then through the pump internal flow path 391. In this way, during the detergent dispensing operation, water is supplied to the three-way valve 380 and pump unit 390, dispensing any detergent remaining inside the three-way valve 380 and pump unit 390 toward the lower flow path portion 370.

[0118] like Figure 16 As shown, the piston 395 is driven and the detergent delivery operation, i.e., the third water guide tube 313 is opened, is alternately performed. Thus, the washing machine 100 can dilute the detergent to a predetermined concentration and supply the diluted detergent solution to the laundry in the washing tub 500.

[0119] After a predetermined number of piston 395 actuations and detergent delivery operations, independent water supply is initiated using the first water conduit 311. During independent water supply, the detergent three-way valve 381 is closed, and the third water conduit 313 is closed. Water introduced into the first water conduit 321 flows through the outlet of the detergent box 400, down the flow path lower portion 370, and into the washing tub 500. When the predetermined water supply is complete, the first water conduit 311 is closed.

[0120] Because the water flow rate through the automatic liquid injection device 301 has an upper limit, the third water conduit 323 or the automatic injection device internal path 325 is set to a lower flow rate than the first water conduit 321. Therefore, by implementing independent water supply using the first water conduit 311, a predetermined amount of water can be supplied in a shorter time compared to independent water supply using the third water conduit 313. Alternatively, instead of independent water supply using the first water conduit 311, the first water conduit 311 and then the third water conduit 313 can be opened.

[0121] Next, the path cleaning is performed. During the path cleaning, water is supplied solely to the third water conduit 313. This ensures that water introduced from the water supply valve 310 is not diverted to the first and third water conduit 321 and 323, but is instead supplied solely to the third water conduit 323. Therefore, the amount of water flowing through the third water conduit 323 during the path cleaning is greater than the amount of water flowing through the third water conduit 323 during the detergent dispensing operation. Water that has passed through the path 325 within the automatic dispensing device flows down through the washing path outflow 326 to the lower flow path 370, from which it is dispensed into the washing tub 500.

[0122] During path cleaning, residual detergent in the automatic liquid dispensing device 301 and the lower portion of the flow path 370 is reliably rinsed and discharged into the washing tank 500. This prevents residual detergent from mixing with the softener added during the final rinse cycle, and also prevents the precipitation of foreign matter generated when the detergent and softener mix. Furthermore, path cleaning can remove foreign matter even if it is present using a strong water flow.

[0123] During the final rinse cycle, softener three-way valve 382, ​​part of three-way valve 380, is opened, connecting the softener container 460 to the path of pump unit 390. Pump unit 390 rotates its motor, moving piston 395 up and down, sucking an appropriate amount of softener from pump unit inlet 392a and dispensing it from pump unit outlet 392b. The softener dispensed from pump unit outlet 392b reaches lower flow path 370.

[0124] Before or during the actuation of piston 395, second water conduit 312 opens, and water begins to be supplied to second water conduit 322. Like water flow Y, the water introduced into second water conduit 322 flows through softener inlet 334 into manual softener dispenser 430, flows from the outlet of manual softener dispenser 430 down flow path lower portion 370, dissolves the softener accumulated in flow path lower portion 370, and dispenses it into washing tub 500.

[0125] Next, the softener three-way valve 382 is closed, blocking the path between the softener container 460 and the pump unit 390. This connects the path from the third water pipe 313 to the automatic liquid agent dispenser 301. The third water pipe 313 is then opened to flush the detergent path within the three-way valve 380 and pump unit 390. This path cleaning prevents residual softener from mixing with the detergent dispensed during the next wash cycle and suppresses the precipitation of foreign matter that may form when the detergent and softener mix.

[0126] [1-3. Functions, etc.]

[0127] As described above, the washing machine 100 of Embodiment 1 includes a housing 600, a washing tub 500, a water conduit, a detergent container 450, a softener container 460, an automatic liquid agent dispensing device 301, and a controller 900. The washing tub 500 is located within the housing 600 and stores laundry. The water conduit supplies water introduced from the water supply valve 310 to the washing tub 500. The detergent container 450 and the softener container 460 are examples of liquid agent containers disclosed herein and store liquid agent therein. The automatic liquid agent dispensing device 301 injects and transports the liquid agent stored in the detergent container 450 and the softener container 460 into the washing tub 500. The water conduit includes a first water conduit. The first water conduit is either the first water conduit 321 or the second water conduit 322 that supplies water to the washing tub 500 without passing through the automatic liquid agent dispensing device 301. The water supply valve 310 includes a first valve. The first valve is the first water conduit cylinder 311 or the second water conduit cylinder 312 that supplies water to the first water conduit path 321 or the second water conduit path 322. The controller 900 drives the automatic liquid injection device 301 and drives the first water conduit cylinder 311 to open.

[0128] Thus, the water supply operation to washing tub 500 and the automatic injection operation of liquid detergent or softener can be performed simultaneously.

[0129] Therefore, the water supply operation accompanying the washing operation when the automatic input function is used can be efficiently performed.

[0130] Like washing machine 100 in Embodiment 1, the water conduit may include a second water conduit, and water supply valve 310 may include a second valve. The second water conduit is third water conduit 323, which supplies water to washing tub 500 via automatic liquid agent dispenser 301. The second valve is third water conduit cylinder 313, which supplies water to third water conduit 323. Furthermore, control unit 900 may stop driving automatic liquid agent dispenser 301 and, while driving automatic liquid agent dispenser 301, drive third water conduit cylinder 313 to open.

[0131] Thus, the water supply operation can be continued while the detergent is fed from the automatic feeder internal path 325 or the third water guide path 323, thereby shortening the operation time required for the washing process.

[0132] (Variation of Embodiment 1)

[0133] As described above, the first embodiment is described as an example of the technology of the present disclosure. However, the technology of the present disclosure is not limited thereto.

[0134] Therefore, a modified example of the first embodiment will be described below.

[0135] In Embodiment 1, washing machine 100 is described as a vertical washing machine as an example of the washing machine of the present disclosure. The washing machine of the present disclosure is not limited to a vertical washing machine, and may be a drum washing machine or a twin-tub washing machine.

[0136] In Embodiment 1, the first water conduit 311 is described as an example of the first valve of the present disclosure. The first valve of the present disclosure is not limited to the first water conduit 311, as long as it opens and closes the first water path that supplies water to the sink independently of the automatic liquid dispensing device. The first valve of the present disclosure may also be the second water conduit 312 alone, or may include both the first water conduit 311 and the second water conduit 312.

[0137] (Implementation Method 2)

[0138] The present disclosure relates to a washing machine.

[0139] Patent Document 1 discloses a washing machine equipped with an automatic liquid agent feeding device.

[0140] The washing machine disclosed in Patent Document 1 includes a liquid container for storing liquid, an automatic liquid dispensing device for automatically dispensing liquid from the container into a washing tub, and a water supply valve connected to the automatic liquid dispensing device via a water path. After the automatic liquid dispensing device is driven to dispense liquid into the washing tub, the water supply valve is opened to supply water into the automatic liquid dispensing device.

[0141] The present disclosure provides a washing machine capable of suppressing the occurrence of a malfunction caused by water supply to an automatic liquid agent feeding device.

[0142] The washing machine disclosed herein includes a housing, a washing tub, a water conduit, a liquid container, an automatic liquid injection device, and a control unit. The washing tub is provided inside the housing and stores laundry. The water conduit supplies water introduced from a water supply valve to the washing tub. The liquid container stores liquid inside. The automatic liquid injection device injects and transports the liquid stored in the liquid container into the washing tub. The water conduit includes a third water channel that supplies water to the washing tub or outer tub without passing through the automatic liquid injection device, and a fourth water channel that supplies water to the washing tub or outer tub through the automatic liquid injection device. The water supply valve includes a third valve that supplies water to the third water channel and a fourth valve that supplies water to the fourth water channel. The control unit drives the fourth valve to open after driving the third valve to open and a predetermined time has passed.

[0143] The washing machine disclosed herein can suppress the occurrence of adverse phenomena caused by water supply to the automatic liquid agent feeding device.

[0144] Embodiment 2 will be described in detail below with reference to the drawings. The drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure and are not intended to limit the subject matter described in the claims.

[0145] Below, use Figures 17 to 32 , describing the washing machine 1100 according to the second embodiment.

[0146] [2-1. Structure]

[0147] [2-1-1. Structure of a washing machine]

[0148] Figure 17 17 is a perspective view showing the structure of washing machine 1100 according to Embodiment 2, with lid 1700 closed. Figure 18 1700 is an external perspective view showing the structure of the washing machine 1100 with the cover 1700 opened. Figure 17 and Figure 18 As shown in FIG. 1 , there is a case where the vertical direction in the state where the washing machine 1100 is installed is described as the up-down direction. Figure 17 and Figure 18 In the case where the side of washing machine 1100 where operating unit 1800 is located is described as the rear side, and the opposite side is described as the front side. That is, the user typically stands in front of washing machine 1100 to put laundry such as clothes into washing machine 1100 and perform various operations to operate washing machine 1100. Furthermore, the laundry disclosed herein is not limited to clothing and may include, for example, bedding, curtains, carpets, shoes, and other cloth or leather products, as well as other items that can be washed in various known washing machines.

[0149] like Figure 17 and Figure 18 As shown, washing machine 1100 includes a housing 1600, a cover 1700, an operating unit 1800, and a control unit 1900. Washing machine 1100 is a so-called vertical washing machine that can be loaded with laundry from the upper surface side of housing 1600 when in a set state. Housing 1600 includes a lower housing 1610 and an upper housing 1620. A washing tank 1500 is housed in lower housing 1610. Washing tank 1500 is a cylindrical body with an opening at the top, which stores laundry and performs a washing operation to clean the laundry. In other words, washing tank 1500 is provided inside housing 1600 to store laundry. The washing operation may also be an operation performed by the washing tanks of various known washing machines. The principle of embodiment 2 is not limited to a specific washing operation performed by washing tank 1500.

[0150] Upper housing 1620 is positioned above lower housing 1610. Upper housing 1620 includes a laundry inlet 1621, which communicates with washing tub 1500. Lid 1700 is attached to the rear of upper housing 1620, flexibly covering inlet 1621. When a user rotates lid 1700 upward, washing tub 1500 is exposed through inlet 1621. The user can then place laundry into washing tub 1500 through inlet 1621.

[0151] An operation unit 1800 is provided at the rear of the upper housing 1620 and at a position behind the inlet 1621. The user can operate the operation unit 1800 to set various operations of the washing tub 1500.

[0152] A water supply port 1200 is provided at the rear of the operation unit 1800 , and a water supply hose 1210 is connected to the water supply port 1200 to introduce tap water from a faucet.

[0153] The control unit 1900 is provided in the housing 1600. The control unit 1900 controls the entire operation of the washing machine 1100 according to the operation of the operation unit 1800 by the user. For example, the control unit 1900 controls the water supply valve 1310 (see Figure 19 ) and liquid agent automatic feeding device 1301 (refer to Figure 19 ). Control unit 1900 includes a computer system having a processor and memory. The processor executes a program stored in the memory, thereby enabling the computer system to function as a control device. The program executed by the processor is pre-recorded in the computer system's memory, but may also be recorded on a non-temporary recording medium such as a memory card and provided, or provided via a telecommunications line such as the Internet.

[0154] like Figure 18As shown, detergent container 1450 , softener container 1460 , and detergent box 1400 are arranged so that their front surfaces are flush with each other when housed in water supply unit 1300 .

[0155] Figure 19 14 is a perspective view showing the appearance of the water supply unit 1300 and its surrounding structures, with the detergent box 1400, the detergent container 1450 and the softener container 1460 being pulled out. Figure 19 As shown, detergent container 1450 and softener container 1460 are configured to store an amount of liquid agent sufficient for multiple operations. Specifically, detergent container 1450 stores liquid detergent, and softener container 1460 stores softener. That is, detergent container 1450 and softener container 1460 are examples of liquid agent containers of the present disclosure that internally store liquid agents. Detergent container 1450 has a detergent container inlet 1451 for injecting the stored liquid detergent, and softener container 1460 has a softener container inlet 1461 for injecting the stored softener. The upper surfaces of detergent container inlet 1451 and softener container inlet 1461 are open to allow for injection of liquid agents.

[0156] Furthermore, detergent container 1450 is provided with a detergent container remaining scale 1450a, and softener container 1460 is provided with a softener container remaining scale 1460a. Detergent container remaining scale 1450a and softener container remaining scale 1460a are each made of a transparent material, allowing the user to visually confirm the remaining amount of the liquid agent.

[0157] On the other hand, the detergent box 1400 is used for the user to put in the amount of detergent required for one operation. The detergent box 1400 is provided with a powder detergent manual input part 1410 for inputting powder detergent, a liquid detergent manual input part 1420 for inputting liquid detergent, and a softener manual input part 1430 for inputting softener.

[0158] The cover 1700 is partially transparent, so that the user can visually check the detergent container remaining scale 1450a and the softener container remaining scale 1460a even when the cover 1700 is closed, and confirm the remaining amount of the liquid agents stored in the detergent container 1450 and the softener container 1460.

[0159] [2-1-2. Water supply unit]

[0160] Figure 20 13 is a rear view showing the structure of the water supply unit 1300 and its surroundings. Figure 21 1 is an exploded perspective view showing the water supply unit 1300 and its surrounding structure. Figure 21As shown, the water supply unit 1300 is mainly composed of a water supply unit housing 1320 formed in a roughly box shape, a flow path cover 1340 covering the upper surface of the water supply unit housing 1320, and a flow path lower part 1370 installed on the lower bottom of the water supply unit housing 1320.

[0161] like Figure 19 and Figure 20 As shown, when viewed from the back of the water supply unit housing 1320, a water supply valve 1310 is installed on the left side to freely open and close the water introduced from the water supply port 1200. When the water supply valve 1310 is open, the water introduced from the water supply valve 1310 is introduced into the water supply unit housing 1320.

[0162] A bus pump 1314 is located in the center of the back of the water supply unit housing 1320. This pump draws water from outside the washing machine 1100 via a hose (not shown). Bus pump 1314 is secured to the flow channel cover 1340 with screws and is directly connected to the first water conduit 1321, described later, via a bus pump water inlet 1333. Bus pump 1314 begins suction and discharge operations by supplying water from the first water conduit 1321.

[0163] like Figure 21 As shown, water supply unit housing 1320 is formed into a generally box-like shape that is open forward. Water supply unit housing 1320 includes a container storage portion 1360 and a detergent box storage portion 1350 as its internal space. Container storage portion 1360 stores detergent container 1450 and softener container 1460, allowing them to be independently pulled out. Detergent box storage portion 1350 stores detergent box 1400, allowing them to be independently pulled out.

[0164] The detergent box flow path portion 1330 is provided as an upper surface of the detergent box storage portion 1350 , and a first water conduit 1321 and a second water conduit 1322 , which will be described later, are formed in the detergent box flow path portion 1330 .

[0165] like Figure 3 、 Figure 4 As shown, when viewed from the back of water supply unit housing 1320, an automatic liquid agent injector 1301 is installed on the right side. Automatic liquid agent injector 1301 injects and delivers liquid stored in detergent container 1450 and softener container 1460 into washing tub 1500. Automatic liquid agent injector 1301 will be described later.

[0166] [2-1-3. Water Conveyance Path]

[0167] like Figure 20 and Figure 21As shown, the water supply valve 310 includes three on-off valves, namely a first water guide cylinder 1311 , a second water guide cylinder 1312 , and a third water guide cylinder 1313 , and each on-off valve can be opened and closed independently.

[0168] Figure 22 13 is a plan view showing the water supply unit 1300 and its surrounding structure with the flow path cover 1340 removed. Figure 23 It is a plan view showing a cross section of water supply unit 1300 and its surroundings with flow path cover 1340 removed in a state where detergent box 1400 , detergent container 1450 , and softener container 1460 are removed. Figure 24 yes Figure 23 The water supply unit 1300 and its surroundings are shown in a cross-sectional view taken along the line M-M. Figure 25 14 is a plan view showing water supply unit 1300 and its surrounding structures with flow path cover 1340 removed, in a state where detergent box 1400 , detergent container 1450 , and softener container 1460 are pulled out. Figure 26 yes Figure 23 The water supply unit 1300 and its surroundings are shown in an H-H cross-sectional view.

[0169] like Figures 22 to 26 As shown, water supply unit housing 1320 includes a first water conduit 1321, a second water conduit 1322, and a third water conduit 1323, which supply water introduced from water supply valve 1310 to washing tub 1500. Water supply valve 1310 is directly connected to first water conduit 1321, second water conduit 1322, and third water conduit 1323. First water conduit 1321, second water conduit 1322, and third water conduit 1323 are branched and independently communicate with first water conduit 1311, second water conduit 1312, and third water conduit 1313, respectively. Specifically, first water conduit 1311 communicates with first water conduit 1321, second water conduit 1312 communicates with second water conduit 1322, and third water conduit 1313 communicates with third water conduit 1323.

[0170] [2-1-4. Detergent Box, First Water Conveying Path, Second Water Conveying Path]

[0171] like Figure 19 and Figures 22 to 25 As shown, the first water conduit 1321 and the second water conduit 1322 guide the water supplied from the first water conduit cylinder 1311 and the second water conduit cylinder 1312 to the detergent box flow path 1330 and inject it into the detergent box 1400 located below.

[0172] As described above, the powder detergent manual input portion 1410 , the liquid detergent manual input portion 1420 , and the softener manual input portion 1430 are provided inside the detergent box 1400 , so that the user can input the respective detergents.

[0173] The first water conduit 1321 is provided with a powder detergent inlet 1331 formed above the manual powder detergent dispenser 1410 to provide vertical communication, and a liquid detergent inlet 1332 formed above the manual liquid detergent dispenser 1420 to provide vertical communication. The second water conduit 1322 is provided with a softener inlet 1334 formed above the manual softener dispenser 1430 to provide vertical communication.

[0174] Manual powder detergent dispenser 1410, manual liquid detergent dispenser 1420, and manual softener dispenser 1430 are each equipped with a drain port (not shown) for discharging accumulated liquid downward. Liquid discharged from the drain port falls toward lower flow path portion 1370, which serves as a drain port for discharging liquid into washing tub 1500.

[0175] [2-1-5. Detergent container, automatic dispensing device, and third water conduit]

[0176] Figure 27 yes Figure 23 The water supply unit 1300 and its surroundings are shown in an L-L cross-sectional view. Figure 28 yes Figure 23 The water supply unit 1300 and its surroundings are shown in a J-J cross-sectional view. Figure 29 yes Figure 23 The water supply unit 1300 and its surroundings are shown in a G-G cross-sectional view. Figure 30 yes Figure 23 The water supply unit 1300 and its surroundings are shown in a K-K cross-sectional view. Figure 31 This is a front view showing the structure of water supply unit 1300 , with detergent box 1400 , detergent container 1450 , and softener container 1460 removed.

[0177] like Figure 22 and Figures 26 to 31As shown, third water conduit 1323 is formed in a generally horizontal direction along the rear surface of water supply unit housing 1320 and opens toward the rear surface at washing path water conduit port 1324. Washing path water conduit port 1324 connects to a path 1325 within the automatic dispensing device (described later), thereby connecting third water conduit 1323 to automatic liquid dispensing device 1301. Automatic liquid dispensing device 1301 is located on the rear surface of container storage portion 1360. Furthermore, as described later, automatic liquid dispensing device 1301 is connected to detergent container 1450 and softener container 1460 housed in container storage portion 1360.

[0178] like Figure 25 As shown, detergent container 1450 is provided with a detergent container insertion port 1302 on the back side, and a detergent container check valve (not shown) is provided inside detergent container insertion port 1302, which is opened by pushing in. Similarly, softener container 1460 is provided with a softener container insertion port 1303 and a softener container check valve (not shown) that is opened by pushing in on the back side. Detergent container 1450 is configured such that, when installed in container storage portion 1360, automatic detergent injection port 1452 (described later) is inserted into detergent container insertion port 1302, the detergent container check valve opens, and liquid detergent can be supplied. Similarly, softener container 1460 is configured such that, when installed in container storage portion 1360, automatic softener injection port 1462 (described later) is inserted into softener container insertion port 1303, the softener container check valve opens, and softener can be supplied.

[0179] A detergent automatic dispensing connection 1360a and a softener automatic dispensing connection 1360b are provided on the inner back surface of the container storage portion 1360. The detergent automatic dispensing connection 1360a and the softener automatic dispensing connection 1360b are configured to surround the detergent automatic dispensing insertion port 1452 and the softener automatic dispensing insertion port 1462 of the liquid agent automatic dispensing device 1301.

[0180] Automatic liquid dispensing device 1301 includes automatic detergent dispensing port 1452 and automatic softener dispensing port 1462, three-way valve 1380, pump unit 1390, and internal path 1325 within the automatic dispensing device. Three-way valve 1380 switches the paths for liquid detergent, softener, and water. Pump unit 1390 draws in and dispenses liquid. Internal path 1325 connects three-way valve 1380 and pump unit 1390.

[0181] like Figure 25As shown, the automatic detergent insertion port 1452 and the automatic softener insertion port 1462 are formed to protrude forward. When the detergent container 1450 and the softener container 1460 are stored in the container storage portion 1360, the automatic detergent insertion port 1452 is connected to the detergent container 1450, and the automatic softener insertion port 1462 is connected to the softener container 1460.

[0182] The three-way valve 1380 includes a detergent three-way valve 1381 and a softener three-way valve 1382 that are configured to be independently openable and closed. The detergent three-way valve 1381 is arranged to communicate with the detergent automatic insertion port 1452. In addition, the softener three-way valve 1382 is arranged to communicate with the softener automatic insertion port 1462. Figure 29 As shown, the downstream side of three-way valve 1380 is connected to pump unit 1390 via automatic feeder internal path 1325. Thus, three-way valve 1380 is connected to automatic feeder internal path 1325, automatic detergent feeder insertion port 1452, automatic softener feeder insertion port 1462, and pump unit 1390. Washing machine 1100 can control the flow of detergent, softener, and water by opening and closing three-way valve 1381 for detergent and three-way valve 1382 for softener.

[0183] Pump unit 1390 includes a pump flow path 1391, a cylinder 1397, and a piston 1395. Pump flow path 1391 is located between pump unit inlet 1392a and pump unit outlet 1392b. Cylinder 1397 is located midway in pump flow path 1391. Piston 1395 moves up and down using the rotational drive force of a motor (not shown).

[0184] An inlet check valve 393 is provided at the pump unit inlet 1392a, and an outlet check valve 1394 is provided at the pump unit outlet 1392b.

[0185] The inlet check valve 1393 is configured to be opened by the negative pressure action of the piston 1395 , and the outlet check valve 1394 is configured to be opened by the positive pressure action of the piston 1395 .

[0186] The automatic feeding device internal path 1325 is connected to the flow path lower portion 1370 via the cleaning path outflow port 1326 at the downstream of the pump unit 1390 .

[0187] [2-2. Action]

[0188] The operation of washing machine 1100 configured as described above will be described below.

[0189] [2-2-1. Water flow during washing operation when using the automatic start function]

[0190] exist Figure 22 and Figure 24 、 Figures 26 to 31 In FIG. 1 , the flow of water supplied from the first water conduit tube 1311 is defined as X1 , the flow of water supplied from the second water conduit tube 1312 is defined as Y1 , and the flow of water supplied from the third water conduit tube 1313 is defined as Z1 .

[0191] Figure 32 It is a timing diagram of the washing operation of the washing machine 1100. Figure 32 As shown, at the start of the cleaning process, automatic liquid agent injection device 1301 is activated to automatically inject liquid agent. Specifically, with third water guide cylinder 1313 closed, detergent three-way valve 1381, part of three-way valve 1380, opens, connecting the detergent container 1450 to the path of pump unit 1390. Pump unit 1390 rotates motor 1396, moving piston 1395 up and down, drawing liquid detergent from pump unit inlet 1392a and dispensing it from pump unit outlet 1392b. The dispensed detergent reaches lower flow path 1370.

[0192] While piston 1395 is being driven, first water conduit 1311 opens, and water supply to first water conduit 1321 begins. As shown in water flow X1, water introduced into first water conduit 1321 flows through powder detergent inlet 1331, liquid detergent inlet 1332, and bus pump inlet 1333, and is then injected into manual powder detergent dispenser 1410, manual liquid detergent dispenser 1420, and bus pump 1314. Water injected into manual powder detergent dispenser 1410 and manual liquid detergent dispenser 1420 flows down through the outlet toward lower flow path 1370, dissolving the liquid detergent within lower flow path 1370 and discharging it into washing tub 1500. Water supply to first water conduit 1321 continues until the start of the conduit cleaning process, which will be described later. This allows water to be supplied to washing tub 1500 simultaneously with automatic detergent addition, shortening the time required for water supply during the initial stages of the cleaning process. In addition, water supply to the first water conduit 1321 may be performed intermittently.

[0193] The liquid agent is sucked and ejected intermittently by pump unit 1390. While piston 1395 is stopped, the detergent delivery operation is performed.

[0194] At the start of the detergent dispensing operation, detergent three-way valve 1381 is closed, blocking the path between detergent container 1450 and pump unit 1390. The path from third water conduit 1313 to automatic liquid dispensing device 1301 is now connected. Next, third water conduit 1313 of water supply valve 1310 is opened. Like water flow Z1, water introduced from third water conduit 1313 flows through third water conduit path 1323, through wash path water conduit port 1324, into automatic dispensing device internal path 1325, and then through pump internal flow path 1391. Thus, during the detergent dispensing operation, water is supplied to three-way valve 1380 and pump unit 1390, dispensing any detergent remaining within these three-way valves 1380 and pump unit 1390 toward lower flow path portion 1370.

[0195] like Figure 32 As shown, the driving of piston 1395 and the detergent delivery operation are alternately performed. Thus, washing machine 1100 can dilute the detergent at a dilution concentration within a predetermined range and supply the diluted detergent liquid to the laundry in washing tub 1500.

[0196] like Figure 32 As shown, after a predetermined number of piston 1395 actuations and detergent delivery operations are performed, separate water supply is implemented using first water conduit 1311. During separate water supply, detergent three-way valve 1381 is closed, and third water conduit 1313 is closed. Water introduced into first water conduit 1321 flows down through the outlet of detergent box 1400 toward lower flow path portion 1370 and into washing tub 1500. When the predetermined water supply is completed, first water conduit 1311 is closed. Furthermore, in Embodiment 2, as described below, first water conduit 1311 is closed after third water conduit 1313 is opened.

[0197] Next, the path cleaning is performed. During path cleaning, water is supplied solely to the third water conduit 1313. This ensures that water introduced from the water supply valve 1310 is not diverted to the first and third water conduit 1321 and 1323, but is instead supplied solely to the third water conduit 1323. Therefore, the amount of water flowing through the third water conduit 1323 during path cleaning is greater than the amount of water flowing through the third water conduit 1323 during detergent dispensing. Water flowing through the automatic dispensing device internal path 1325 flows down the wash path outlet 1326 to the lower flow path 1370, from which it is dispensed into the washing tub 1500.

[0198] During path cleaning, residual detergent in the automatic liquid dispensing device 1301 and the lower portion of the flow path 1370 is reliably rinsed and discharged into the washing tank 1500. This prevents residual detergent from mixing with the softener added during the final rinse cycle, and also prevents the precipitation of foreign matter generated when the detergent and softener mix. Furthermore, path cleaning can remove foreign matter even if it is present using a strong water flow.

[0199] During the final rinse cycle, softener three-way valve 1382, part of three-way valve 1380, is opened, connecting the softener container 1460 to the path of pump unit 1390. Pump unit 1390 rotates its motor, moving piston 1395 up and down, sucking an appropriate amount of softener from pump unit inlet 1392a and dispensing it from pump unit outlet 1392b. The softener dispensed from pump unit outlet 1392b reaches lower flow path 1370.

[0200] Before or during the actuation of piston 1395, second water conduit 1312 opens, and water begins to be supplied to second water conduit 1322. As shown in water flow Y1, the water introduced into second water conduit 1322 flows through softener inlet 1334 into manual softener dispenser 1430, flows from the outlet of manual softener dispenser 1430 down flow path lower portion 1370, and dissolves the softener accumulated in flow path lower portion 1370, discharging it into washing tub 1500.

[0201] Next, the softener three-way valve 1382 is closed, blocking the path between the softener container 1460 and the pump unit 1390. This connects the path from the third water pipe 1313 to the automatic liquid agent dispenser 1301. The third water pipe 1313 is then opened to flush the softener path within the three-way valve 1380 and pump unit 1390. This path cleaning prevents residual softener from mixing with the detergent dispensed during the next wash cycle, and also prevents the release of foreign matter that may form when the detergent and softener mix.

[0202] [2-2-2. Load reduction action]

[0203] The water conduit path branches into a first conduit path 1321 opened and closed by a first conduit cylinder 1311, a second conduit path 1322 opened and closed by a second conduit cylinder 1312, and a third conduit path 1323 opened and closed by a third conduit cylinder 1313. Therefore, when one or more of the on-off valves of water supply valve 1310 are opened from a state where all the on-off valves are closed, a high water pressure is temporarily applied to the open valves, placing a high load on the conduit path where the open valves are located.

[0204] In washing machine 1100 of Embodiment 2, a load reduction operation is performed to reduce the load on third water conduit 1323 and automatic liquid agent injector 1301 caused by opening and closing third water conduit cylinder 1313 .

[0205] like Figure 32 As shown, during the detergent dispensing operation, control unit 1900 drives third water conduit 1313 to open while first water conduit 1311 is open. By pre-opening first water conduit 1311, it is possible to prevent a significant load from being applied to third water conduit path 1323. This also prevents a significant load from being applied to automatic liquid dispensing device 1301, which is connected to third water conduit path 1323, on path 1325 within the automatic dispensing device. This prevents damage to components of automatic liquid dispensing device 1301, which could result in leakage or malfunction.

[0206] Furthermore, after a predetermined period of time has elapsed while maintaining the open state of first water conduit tube 1311, control unit 1900 closes third water conduit tube 1313. This prevents contaminated water in third water conduit path 1323 or automatic injection device internal path 1325 from flowing back toward water supply port 1200 due to the temporary negative pressure generated when closing third water conduit tube 1313.

[0207] During the channel cleaning, the controller 1900 opens the third water conduit tube 1313 and closes the first water conduit tube 1311 after a predetermined time has passed. This prevents a large load from being applied to the third water conduit tube 1323 and the automatic injection device internal channel 1325 during the channel cleaning.

[0208] Furthermore, during path cleaning, control unit 1900 opens first water conduit 1311 and then closes third water conduit 1313 after a predetermined period of time. This prevents water from flowing back toward water supply port 1200 due to the temporary negative pressure generated when closing third water conduit 1313, and prevents water contaminated by automatic liquid injection device 1301 from flowing upstream of water supply port 1200.

[0209] [2-3. Effects, etc.]

[0210] As described above, washing machine 1100 according to Embodiment 2 includes housing 1600, washing tub 1500, a water conduit, detergent container 1450, softener container 1460, automatic liquid agent dispensing device 1301, and control unit 1900. Washing tub 1500 is located within housing 1600 and stores laundry. The water conduit supplies water introduced from water supply valve 1310 to washing tub 1500. Detergent container 1450 and softener container 1460 are examples of liquid agent containers disclosed herein and store liquid agent therein. Automatic liquid agent dispensing device 1301 injects and transports the liquid agent stored in detergent container 1450 and softener container 1460 into washing tub 1500. Control unit 1900 controls water supply valve 1310 and automatic liquid agent dispensing device 1301. The water conduit includes a third water channel and a fourth water channel. The third water path is composed of first water conduit 1321 and second water conduit 1322, which supply water to washing tub 1500 without passing through automatic liquid dispensing device 1301. The fourth water path is third water conduit 1323, which supplies water to washing tub 1500 via automatic liquid dispensing device 1301. Water supply valve 1310 includes a third valve and a fourth valve. The third valve is first water conduit 1311, which supplies water to first water conduit 1321, or second water conduit 1312, which supplies water to second water conduit 1322. The fourth valve is third water conduit 1313, which supplies water to third water conduit 1323. After driving first water conduit 1311 to open and a predetermined time has passed, controller 1900 drives third water conduit 1313 to open.

[0211] Thus, by opening the first water conduit tube 1311 in advance, it is possible to suppress a large load from being applied to the third water conduit channel 1323 when the third water conduit tube 1313 is opened.

[0212] Therefore, it is possible to suppress the occurrence of malfunctions caused by the water supply to the automatic liquid agent feeding device 1301 .

[0213] As in the washing machine 1100 according to the second embodiment, the controller 1900 may close the first water conduit tube 1311 after a predetermined time has passed after the third water conduit tube 1313 is opened.

[0214] As in the washing machine 1100 of the second embodiment, the controller 1900 may drive the first water-conducting cylinder 1311 to open and then close the third water-conducting cylinder 1313 after a predetermined time has passed.

[0215] (Variation of Embodiment 2)

[0216] As described above, Embodiment 2 has been described as an example of the technology of the present disclosure. However, the technology of the present disclosure is not limited thereto.

[0217] Therefore, a modified example of the second embodiment will be described below.

[0218] In Embodiment 2, a vertical washing machine 1100 is described as an example of the washing machine of the present disclosure. The washing machine of the present disclosure is not limited to a vertical washing machine, and may be a drum washing machine or a twin-tub washing machine.

[0219] In Embodiment 2, first water conduit 1311 was described as an example of the third valve of the present disclosure. The third valve of the present disclosure is not limited to first water conduit 1311, as long as it opens and closes the third water path that supplies water to the sink independently of the automatic liquid dispensing device. The third valve of the present disclosure may also be a separate second water conduit 1312, or may include both first and second water conduit 1311 and 1312.

[0220] (Implementation 3)

[0221] The present disclosure relates to a washing machine.

[0222] Patent Document 1 discloses a washing machine equipped with an automatic liquid agent feeding device.

[0223] The washing machine disclosed in Patent Document 1 includes a liquid container for storing liquid, an automatic liquid dispensing device for automatically dispensing liquid from the container into a washing tub, and a water supply valve connected to the automatic liquid dispensing device via a water path. After the automatic liquid dispensing device is driven to dispense liquid into the washing tub, the water supply valve is opened to supply water into the automatic liquid dispensing device.

[0224] The present disclosure provides a washing machine that improves the performance of supplying detergent liquid when an automatic dispensing device is used.

[0225] The washing machine disclosed herein includes a housing, a washing tub, a water conduit, a liquid container, an automatic liquid injection device, and a control unit. The washing tub is provided inside the housing and stores laundry. The water conduit supplies water introduced from a water supply valve to the washing tub. The liquid container stores liquid inside. The automatic liquid injection device injects and transports the liquid stored in the liquid container into the washing tub. The water conduit includes a fifth water channel, a sixth water channel, and a converging water channel. The fifth water channel supplies water to the washing tub without passing through the automatic liquid injection device. The sixth water channel supplies water to the washing tub via the automatic liquid injection device. The converging water channel merges the fifth and sixth water channels. The control unit drives the water supply valve to supply water to the fifth water channel, and drives the automatic liquid injection device to inject and transport the liquid into the washing tub.

[0226] The washing machine disclosed herein improves the performance of supplying detergent liquid when an automatic feeding device is used.

[0227] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0228] Below, use Figures 33 to 55 , describing the washing machine 2100 according to the third embodiment.

[0229] [3-1. Structure]

[0230] [3-1-1. Structure of a washing machine]

[0231] Figure 33 2 is a perspective view showing the structure of washing machine 2100 according to Embodiment 3, with lid 2700 closed. Figure 34 2 is a perspective view showing the appearance of the washing machine 2100 in a state where the cover 2700 is opened. Figure 33 and Figure 34 As shown in FIG. 1 , there is a case where the vertical direction in the state where the washing machine 2100 is installed is described as the up-down direction. Figure 33 and Figure 34 In the case where the side of washing machine 2100 where operating unit 2800 is located is described as the rear side, and the opposite side is described as the front side. That is, the user typically stands in front of washing machine 2100 to put laundry such as clothes into washing machine 2100 and perform various operations to operate washing machine 2100. Furthermore, the laundry disclosed herein is not limited to clothing and may include, for example, bedding, curtains, carpets, shoes, and other cloth or leather products, as well as other items that can be washed in various known washing machines.

[0232] like Figure 33 and Figure 34 As shown, washing machine 2100 includes a housing 2600, a cover 2700, an operating unit 2800, and a control unit 2900. Washing machine 2100 is a so-called vertical washing machine that can be loaded with laundry from the upper surface side of housing 2600 when in a set state. Housing 2600 includes a lower housing 2610 and an upper housing 2620. A washing tank 2500 is housed in lower housing 2610. Washing tank 2500 is a cylindrical body with an upper opening that stores laundry and performs a cleaning operation to wash the laundry. In other words, washing tank 2500 is located inside housing 2600 to store laundry. The cleaning operation can also be an operation performed by the washing tanks of various known washing machines. The principle of embodiment 3 is not limited to a specific cleaning operation performed by washing tank 2500.

[0233] Upper housing 2620 is positioned above lower housing 2610. Upper housing 2620 includes a laundry inlet 2621, which communicates with washing tub 2500. Lid 2700 is attached to the rear of upper housing 2620, flexibly covering inlet 2621. When a user rotates lid 2700 upward, washing tub 2500 is exposed through inlet 2621. The user can then place laundry into washing tub 2500 through inlet 2621.

[0234] An operation unit 2800 is provided at the rear of the upper housing 2620 and at a position behind the inlet 2621. The user can operate the operation unit 2800 to set various operations of the washing tub 2500.

[0235] A water supply port 2200 is provided at the rear of the operation unit 2800 , and a water supply hose 2210 is connected to the water supply port 2200 to introduce tap water from a faucet.

[0236] The control unit 2900 is provided in the housing 2600. The control unit 2900 controls the entire operation of the washing machine 2100 according to the operation of the operation unit 2800 by the user. For example, the control unit 2900 controls the water supply valve 2310 (see Figure 35 ) and liquid agent automatic feeding device 2301 (refer to Figure 35 ). Control unit 2900 includes a computer system having a processor and memory. The processor executes a program stored in the memory, thereby enabling the computer system to function as a control device. The program executed by the processor is pre-recorded in the computer system's memory, but may also be recorded on a non-temporary recording medium such as a memory card and provided, or provided via a telecommunications line such as the Internet.

[0237] like Figure 34 As shown, detergent container 2450 , softener container 2460 , and detergent box 2400 are arranged so that their front surfaces are flush with each other when housed in water supply unit 2300 .

[0238] Figure 35 2 is a perspective view showing the appearance of the water supply unit 2300 and its surrounding structures, with the detergent box 2400, the detergent container 2450, and the softener container 2460 being pulled out. Figure 35As shown, detergent container 2450 and softener container 2460 are configured to store an amount of liquid agent sufficient for multiple operations. Specifically, detergent container 2450 stores liquid detergent, and softener container 2460 stores softener. That is, detergent container 2450 and softener container 2460 are examples of liquid agent containers of the present disclosure that internally store liquid agents. Detergent container 2450 has a detergent container inlet 2451 for injecting the stored liquid detergent, and softener container 2460 has a softener container inlet 2461 for injecting the stored softener. The upper surfaces of detergent container inlet 2451 and softener container inlet 2461 are open to allow for injection of liquid agents.

[0239] Furthermore, detergent container 2450 is provided with a detergent container remaining scale 2450a, and softener container 2460 is provided with a softener container remaining scale 2460a. The detergent container remaining scale 2450a and softener container remaining scale 2460a are each made of a transparent material, allowing the user to visually confirm the remaining amount of the liquid agent.

[0240] On the other hand, the detergent box 2400 is used for the user to put in the amount of detergent required for one operation. The detergent box 2400 is provided with a powder detergent manual input part 2410 for inputting powder detergent, a liquid detergent manual input part 2420 for inputting liquid detergent, and a softener manual input part 2430 for inputting softener.

[0241] The cover 2700 is partially transparent, so that the user can visually check the detergent container remaining scale 2450a and the softener container remaining scale 2460a even when the cover 2700 is closed, and confirm the remaining amount of the liquid agents stored in the detergent container 2450 and the softener container 2460.

[0242] [3-1-2. Water supply unit]

[0243] Figure 36 2 is a rear view showing the structure of the water supply unit 2300 and its surroundings. Figure 37 2 is an exploded perspective view showing the water supply unit 2300 and its surrounding structure. Figure 37 As shown, the water supply unit 2300 is mainly composed of a water supply unit housing 2320 formed in a roughly box shape, a flow path cover 2340 covering the upper surface of the water supply unit housing 2320, and a flow path lower part 2370 installed on the lower bottom of the water supply unit housing 2320.

[0244] like Figure 35 and Figure 36As shown, when viewed from the back of the water supply unit housing 2320, a water supply valve 2310 is installed on the left side to freely open and close the water introduced from the water supply port 2200. When the water supply valve 2310 is open, the water introduced from the water supply valve 2310 is introduced into the water supply unit housing 2320.

[0245] A bus pump 2314 is located in the center of the back of the water supply unit housing 2320. This pump draws water from outside the washing machine 2100 via a hose (not shown). Bus pump 2314 is secured to the flow channel cover 2340 with screws and is directly connected to the first water conduit 2321, described later, via a bus pump water inlet 2333. Bus pump 2314 begins suction and discharge operations by supplying water from the first water conduit 2321.

[0246] like Figure 37 and Figure 38 As shown, water supply unit housing 2320 is formed into a generally box-like shape that is open forward. Water supply unit housing 2320 includes a detergent container storage portion 2360, a softener container storage portion 2365, and a detergent box storage portion 2350 as its internal space. Detergent container storage portion 2360 can independently pull out detergent container 2450 and store detergent container 2450. Softener container storage portion 2365 can independently pull out softener container 2460 and store softener container 2460. Detergent box storage portion 2350 can independently pull out detergent box 2400 and store detergent box 2400.

[0247] The detergent box flow path portion 2330 is provided as an upper surface of the detergent box storage portion 2350 , and a first water conduit 2321 and a second water conduit 2322 , which will be described later, are formed in the detergent box flow path portion 2330 .

[0248] like Figure 35 and Figure 36 As shown, when viewed from the back of the water supply unit housing 2320, an automatic liquid agent injection device 2301 is installed on the right side. The automatic liquid agent injection device 2301 injects and delivers the liquid stored in the detergent container 2450 and the softener container 2460 into the washing tank 2500. The automatic liquid agent injection device 2301 will be described later.

[0249] [3-1-3. Water Conveyance Path]

[0250] like Figure 36 and Figure 37 As shown, the water supply valve 2310 includes three on-off valves, namely a first water guide cylinder 2311 , a second water guide cylinder 2312 , and a third water guide cylinder 2313 , and each on-off valve can be opened and closed independently.

[0251] Figure 381 is a plan view showing the water supply unit 2300 and its surrounding structure with the flow path cover 2340 removed. Figure 39 It is a plan view showing a cross section of water supply unit 2300 and its surroundings with flow path cover 2340 removed in a state where detergent box 2400 , detergent container 2450 , and softener container 2460 are removed. Figure 40 yes Figure 39 The water supply unit 2300 and its surroundings are shown in an S-S cross-sectional view. Figure 41 1 is a plan view showing water supply unit 2300 and its surrounding structures with flow path cover 2340 removed, in a state where detergent box 2400, detergent container 2450, and softener container 2460 are pulled out. Figure 42 yes Figure 39 The water supply unit 2300 and its surroundings are shown in a cross-sectional view taken along line 0-0.

[0252] like Figures 38 to 42 As shown, the water supply unit housing 2320 includes a first water conduit 2321, a second water conduit 2322, and a third water conduit 2323, which supply water introduced from the water supply valve 2310 to the washing tub 2500. Specifically, the flow path lower portion 2370 is located below the first and second water conduit 2321, 2322. The water supply valve 2310 is directly connected to the first, second, and third water conduit 2321, 2322, and 2323. The first, second, and third water conduit 2321, 2322, and 2323 are formed in a branched manner, independently communicating with the first, second, and third water conduit cylinders 2311, 2312, and 2313, respectively. That is, the first water conduit tube 2311 is in communication with the first water conduit path 2321 , the second water conduit tube 2312 is in communication with the second water conduit path 2322 , and the third water conduit tube 2313 is in communication with the third water conduit path 2323 .

[0253] [3-1-4. Detergent Box, First Water Conveying Path, Second Water Conveying Path]

[0254] like Figure 35 and Figures 38 to 41 As shown, the first water conduit 2321 and the second water conduit 2322 guide the water supplied from the first water conduit cylinder 2311 and the second water conduit cylinder 2312 to the detergent box flow path 2330 and inject it into the detergent box 2400 located below.

[0255] As described above, the powder detergent manual input portion 2410 , the liquid detergent manual input portion 2420 , and the softener manual input portion 2430 are provided inside the detergent box 2400 , so that the user can input the respective detergents.

[0256] The first water conduit 2321 is provided with a powder detergent inlet 2331 formed above the manual powder detergent dispenser 2410 to provide vertical communication, and a liquid detergent inlet 2332 formed above the manual liquid detergent dispenser 2420 to provide vertical communication. The second water conduit 2322 is provided with a softener inlet 2334 formed above the manual softener dispenser 2430 to provide vertical communication.

[0257] Powder detergent manual input section 2410 , liquid detergent manual input section 2420 , and softener manual input section 2430 are each provided with a discharge port (not shown) for discharging the liquid accumulated therein downward. The liquid discharged from the discharge port is discharged toward flow path lower section 2370 .

[0258] like Figure 38 As shown, a foam generation water inlet 2335 is provided in the first water conduit 2321. The foam generation water inlet 2335 is positioned behind the detergent box 2400 stored in the detergent box storage section 2350. This allows water injected downward from the detergent box storage section 2350 to fall toward the lower flow path portion 2370 without passing through the detergent box 2400. Alternatively, the foam generation water inlet 2335 may be provided in the second water conduit 2322, or in both the first water conduit 2321 and the second water conduit 2322.

[0259] [3-1-5. Automatic injection device, third water conduit path]

[0260] Figure 43 yes Figure 39 The water supply unit 2300 and its surroundings are shown in an RR cross-sectional view. Figure 44 yes Figure 39 The water supply unit 2300 and its surroundings are shown in a P-P cross-sectional view. Figure 45 yes Figure 39 The water supply unit 2300 and its surroundings are shown in an N-N cross-sectional view. Figure 46 yes Figure 39 The water supply unit 2300 and its surroundings are shown in a Q-Q cross-sectional view. Figure 47 2 is a front view showing the structure of the water supply unit 2300, with the detergent box 2400, the detergent container 450, and the softener container 2460 removed.

[0261] like Figure 38 and Figures 42 to 47As shown, third water conduit 2323 is formed in a generally horizontal direction along the rear surface of water supply unit housing 2320 and opens toward the rear surface at cleaning path water conduit port 2324. Cleaning path water conduit port 2324 connects to a path 2325 within the automatic dispensing device (described later), thereby connecting third water conduit 2323 to automatic liquid dispensing device 2301. Automatic liquid dispensing device 2301 is located on the rear surface of detergent container accommodating portion 2360 and softener container accommodating portion 2365. As will be described later, automatic liquid dispensing device 2301 is connected to detergent container 2450 and softener container 2460, respectively, which are accommodated in detergent container accommodating portion 2360 and softener container accommodating portion 2365.

[0262] like Figure 41 As shown, detergent container 2450 is provided with a detergent container insertion port 2302 on the back side, and a detergent container check valve that opens by pushing inside detergent container insertion port 2302. Similarly, softener container 2460 is provided with a softener container insertion port 2303 and a softener container check valve that opens by pushing inside on the back side. Detergent container 2450 is configured such that when installed in detergent container storage section 2360, automatic detergent injection port 2452 (described later) is inserted into detergent container insertion port 2302, the detergent container check valve opens, and liquid detergent can be supplied. Similarly, softener container 2460 is configured such that when installed in softener container storage section 2365, automatic softener injection port 2462 (described later) is inserted into softener container insertion port 2303, the softener container check valve opens, and softener can be supplied.

[0263] An automatic detergent dispensing connection portion 2360a and an automatic softener dispensing connection portion 2365a are provided on the inner back surfaces of the detergent container storage portion 2360 and the softener container storage portion 2365, respectively. The automatic detergent dispensing connection portion 2360a and the automatic softener dispensing connection portion 2365a are configured to surround the automatic detergent dispensing insertion port 2452 and the automatic softener dispensing insertion port 2462 of the automatic liquid dispensing device 2301.

[0264] The automatic liquid agent dispensing device 2301 includes an automatic detergent dispensing port 2452 and an automatic softener dispensing port 2462, a three-way valve 2380, a pump unit 2390, and an internal path 2325 within the automatic dispensing device. The three-way valve 2380 switches the paths for the liquid detergent, softener, and water. The pump unit 2390 draws in and dispenses the liquid agent. The internal path 2325 connects the three-way valve 2380 and the pump unit 2390.

[0265] like Figure 41As shown, the automatic detergent insertion port 2452 and the automatic softener insertion port 2462 are formed to protrude forward. When the detergent container 2450 is stored in the detergent container storage portion 2360 and the softener container 2460 is stored in the softener container storage portion 2365, the automatic detergent insertion port 2452 is connected to the detergent container 2450, and the automatic softener insertion port 2462 is connected to the softener container 2460.

[0266] The three-way valve 2380 includes a detergent three-way valve 2381 and a softener three-way valve 2382, each of which is independently controllable for opening and closing. The detergent three-way valve 2381 is arranged to communicate with the wash path water inlet 2324, the automatic detergent injection port 2452, and the softener three-way valve 2382. The softener three-way valve 2382 is arranged to communicate with the detergent three-way valve 2381, the automatic softener injection port 2462, and the path 2325 within the automatic injection device. The downstream side of the three-way valve 2380 is connected to the pump unit 2390 via the path 2325 within the automatic injection device. In this way, the three-way valve 2380 is connected to the path 2325 within the automatic injection device, the automatic detergent injection port 2452, the automatic softener injection port 2462, and the pump unit 2390. The washing machine 2100 can control the flow of detergent, softener, and water by opening and closing the detergent three-way valve 2381 and the softener three-way valve 2382 .

[0267] Pump unit 2390 includes a pump flow path 2391, a cylinder 2397, and a piston 2395. Pump flow path 2391 is located between pump unit inlet 2392a and pump unit outlet 2392b. Cylinder 2397 is located midway along pump flow path 2391. Piston 2395 is moved up and down by the rotational drive force of a motor (not shown).

[0268] An inlet check valve 2393 is provided at the pump unit inlet 2392a, and an outlet check valve 2394 is provided at the pump unit outlet 2392b.

[0269] The inlet check valve 2393 is configured to be opened by the negative pressure action of the piston 2395 , and the outlet check valve 2394 is configured to be opened by the positive pressure action of the piston 2395 .

[0270] The automatic feeding device internal path 2325 is connected to the flow path lower portion 2370 via the cleaning path outflow port 2326 at the downstream of the pump unit 2390 .

[0271] [3-1-6. Detergent Container and Container Storage]

[0272] Hereinafter, as an example of a liquid agent container, a detergent container 2450 will be described. Softener container 2460 has the same structure as detergent container 2450.

[0273] Figure 48 24 is a perspective view showing the structure of the detergent container 2450. Figure 48 As shown, detergent container 2450 includes a detergent container housing 2456 formed in a substantially box shape and a detergent container insertion portion 2451 provided on an upper portion of detergent container housing 2456 .

[0274] The detergent container inlet 2451 is opened approximately in the center, and has inclined inlet portions 2464 at the front, left and right sides, and rear. The inclined inlet portions 2464 are formed to slope downward toward the opening of the detergent container inlet 2451, guiding the liquid agent into the detergent container inlet 2451 and allowing it to flow into the interior of the detergent container housing 2456.

[0275] Figure 49A It is a plan view showing a cross section of water supply unit 2300 and its surroundings with flow path cover 2340 removed in a state where detergent container 2450 is accommodated. Figure 49B It is a plan view showing a cross section of water supply unit 2300 and its surroundings with flow path cover 2340 removed in a state where detergent container 2450 is pulled out. Figure 50 yes Figure 49A The water supply unit 2300 and its surroundings are shown in a T-T cross-sectional view. Figure 51 yes Figure 49B The water supply unit 2300 and its surroundings are shown in a W-W cross-sectional view. Figure 52 yes Figure 49A A U-U cross-sectional view of the water supply unit 2300 and its surroundings is shown. Figure 53 yes Figure 49B The water supply unit 2300 and its surroundings are shown in a V-V cross-sectional view.

[0276] like Figure 50 As shown, a locking lever 2454 is provided at the bottom of the detergent container housing 2456. When the detergent container 2450 is stored in the detergent container storage portion 2360, the locking lever 2454 engages with a detergent container storage portion claw 2361 provided on the inner bottom surface of the detergent container storage portion 2360. A locking lever grip 2454a is provided at the near-front end of the locking lever 2454. The locking lever grip 2454a is located near a detergent container housing grip 2456a formed by extending the lower portion of the front surface of the detergent container housing 2456.

[0277] like Figures 50 to 53As shown, a filter 2470 for filtering liquid is provided inside the back side of the detergent container housing 2456. The filter 2470 is formed in a substantially rectangular shape so as to abut against the inner side wall of the detergent container housing 2456 and is provided so as to be inclined downward from the back toward the front.

[0278] A spring mechanism 2455 is provided approximately in the center of the lower back portion of the detergent container housing 2456. The spring mechanism 2455 includes a spring 2455a positioned below the filter 2470. The spring 2455a applies a force to the detergent container housing 2456 forward. A detergent container receiving portion contact surface 2362 is provided behind the spring mechanism 2455. The detergent container receiving portion contact surface 2362 abuts against the spring mechanism 2455, causing the spring 2455a to remain compressed. Furthermore, the detergent container insertion port 2302 is located to the side of the spring mechanism 2455.

[0279] The upper surface of detergent container storage portion 2360 is formed by flow path cover 2340. Flow path cover 2340 covers the upper portion of detergent container insertion portion 2451 and functions as a cover to prevent foreign matter from entering through detergent container insertion portion 2451.

[0280] like Figure 50 and Figure 51 As shown, a stopper 2368 is provided on the front portion of the inner upper surface of the detergent container storage portion 2360. The stopper 2368 is configured to be engageable with the container protrusion 2457 provided on the upper surface of the detergent container 2450.

[0281] like Figure 52 and Figure 53 As shown, a drop opening 2364 is formed on the inner bottom surface of detergent container storage portion 2360 and communicates with lower flow path portion 2370. Drop opening 2364 is located below detergent container insertion port 2302 when detergent container 2450 is stored in detergent container storage portion 2360. Drop opening 2364 allows liquid detergent leaking from detergent container insertion port 2302 or automatic detergent insertion port 2452 to flow down cleaning path 2319.

[0282] A reservoir 2363 is provided on the inner bottom surface of detergent container storage portion 2360. Reservoir 2363 is a recessed portion capable of storing liquid and is formed as a gap separating the bottom surface of detergent container 2450 and the inner bottom surface of detergent container storage portion 2360.

[0283] [3-1-7. Lower part of the flow path]

[0284] Figure 54 23 is a top view showing the structure of the lower portion of the flow path 2370. Figure 53 and Figure 54 As shown, the flow path lower portion 2370 includes a first flow path lower portion 2372, a cleaning path 2319, a second flow path lower portion 2373, and a flow path lower portion outlet 2371. The first flow path lower portion 2372 is connected to the cleaning path outlet 2326. The cleaning path 2319 is provided below the drop port 2364. The second flow path lower portion 2373 allows liquid discharged from the detergent box 2400 to pass through.

[0285] Washing path 2319 is provided with a washing path inlet 2318 for introducing liquid from first lower flow path 2372, and a washing path outlet 2374 for allowing liquid to flow out of first lower flow path 2372. Washing path inlet 2318 is located upstream of the point where liquid drops from drop port 2364, while washing path outlet 2374 is located downstream of the point where liquid drops from drop port 2364. Washing path inlet 2318 is configured to have a smaller flow path cross-sectional area than that of first lower flow path 2372, thereby reducing the amount of water passing through washing path 2319. This prevents water passing through washing path 2319 from overflowing upward from drop port 2364 and entering detergent container storage section 2360.

[0286] A plurality of pins 2377 are provided on the downstream side of the first lower flow path 2372. These pins 2377 extend vertically below the foam generation water inlet 2335. Specifically, the lower flow path 2370 includes the plurality of pins 2377 extending vertically below the foam generation water inlet 2335. Specifically, the pins 2377 are positioned at locations where liquid passing through the first lower flow path 2372 collides with water injected from the foam generation water inlet 2335. This creates a foam generation portion 2376 that generates foam.

[0287] First flow path lower portion 2372 communicates with second flow path lower portion 2373 at junction 2375. Flow path lower portion outlet 2371 is provided downstream of junction 2375 and is formed to open downward to allow liquid to fall into washing tub 2500.

[0288] [3-2. Action]

[0289] The operation of washing machine 2100 configured as described above will be described below.

[0290] [3-2-1. Water flow during washing operation when using the automatic start function]

[0291] exist Figure 38 、 Figure 40 and Figures 42 to 47In the diagram, the flow of water supplied from the first water conduit tube 2311 is defined as X2, the flow of water supplied from the second water conduit tube 2312 is defined as Y2, and the flow of water supplied from the third water conduit tube 2313 is defined as Z2.

[0292] Figure 55 It is a timing diagram of the washing operation of the washing machine 2100. Figure 55 As shown, at the start of the cleaning process, the automatic liquid detergent injection device 2301 is activated to automatically inject liquid detergent. Specifically, with the third water guide tube 2313 closed, the detergent three-way valve 2381, part of the three-way valve 2380, opens, connecting the detergent container 2450 to the pump unit 2390. The pump unit 2390 rotates the motor, causing the piston 2395 to move up and down, drawing an appropriate amount of liquid detergent through the pump unit inlet 2392a and dispensing it through the pump unit outlet 2392b. The dispensed detergent reaches the lower portion 2370 of the flow path.

[0293] Before, during, or after piston 2395 is driven, first water conduit 2311 opens, and water supply to first water conduit path 2321 begins. As shown in water flow X2, water introduced into first water conduit path 2321 flows through powder detergent inlet 2331, liquid detergent inlet 2332, bus pump inlet 2333, and foam generation inlet 2335, and is then injected into manual powder detergent dispenser 2410, manual liquid detergent dispenser 2420, bus pump 1314, and pin 2377. Water injected into manual powder detergent dispenser 2410 and manual liquid detergent dispenser 2420 flows down into lower flow path 2370 through the outlet, dissolving the liquid detergent in lower flow path 2370 and discharging it into washing tank 2500. Water supply to first water conduit path 2321 continues until the start of path cleaning, described later. Thus, water can be supplied to washing tub 2500 while detergent is automatically added, and thus the time required for the water supply operation at the initial stage of the washing process can be shortened.

[0294] The liquid agent is sucked and ejected intermittently by the pump unit 2390. While the piston 2395 is stopped, the detergent delivery operation is performed.

[0295] At the start of the detergent dispensing operation, detergent three-way valve 2381 is closed, blocking the path between detergent container 2450 and pump unit 2390. The path from third water conduit 2313 to automatic liquid dispensing device 2301 is now open. Next, third water conduit 2313 of water supply valve 2310 is opened. Like water flow Z2, water introduced from third water conduit 2313 flows through third water conduit path 2323, through wash path water conduit port 2324, into automatic dispensing device internal path 2325, and then through pump internal flow path 2391. Thus, during the detergent dispensing operation, water is supplied to three-way valve 2380 and pump unit 2390, dispensing any detergent remaining within these three-way valves 2380 and pump unit 2390 toward lower flow path 2370.

[0296] The driving of piston 2395 and the detergent delivery operation are performed alternately. Thus, washing machine 2100 can generate a detergent liquid diluted at a dilution concentration within a predetermined range at flow path lower portion 2370 .

[0297] The detergent liquid that has passed through pump flow path 2391 flows into first flow path lower path 2372 via cleaning path outflow outlet 2326. A portion of the detergent liquid that has flowed into first flow path lower path 2372 flows into cleaning path 2319 from cleaning path inlet 2318. The detergent liquid that has flowed into cleaning path 2319 rinses the liquid detergent adhering to cleaning path 2319 and then merges with first flow path lower path 2372 through cleaning path outlet 2374. The detergent liquid that has passed through first flow path lower path 2372 reaches pin 2377 downstream of cleaning path outlet 2374. Pin 2377 stagnates and diffuses the flow of the detergent liquid.

[0298] While piston 2395 is being driven and detergent is being dispensed, water is continuously supplied through first water guide 2311, pouring water from foam generation water inlet 2335 toward pin 2377 of foam generator 2376. The injected water collides with the detergent liquid around pin 2377, generating detergent foam. The generated detergent foam and detergent liquid merge with second lower flow path 2373 and are discharged from lower flow path outlet 2371 into washing tub 2500.

[0299] The driving of piston 2395 and the detergent delivery operation are performed alternately. Thus, washing machine 2100 can continuously deliver detergent liquid diluted to a predetermined concentration within a predetermined range to pin 2377. This allows detergent liquid and detergent foam to be continuously fed into washing tank 2500, thereby ensuring that the detergent liquid and detergent foam are fully supplied to the clothing. Furthermore, lower flow path portion 2370 of embodiment 3 feeds detergent liquid generated by diluting liquid detergent into washing tank 2500, thereby preventing the original liquid detergent from adhering to clothing stored in washing tank 2500. This prevents damage to clothing caused by the original liquid detergent adhering.

[0300] The driving of piston 2395 and the detergent delivery operation are performed alternately. Thus, washing machine 2100 can dilute the detergent to a dilution concentration within a predetermined range and supply the diluted detergent solution to the clothes in washing tub 2500.

[0301] After a predetermined number of piston 2395 actuations and detergent delivery operations, independent water supply is implemented using first water conduit 2311. During independent water supply, detergent three-way valve 2381 is closed, and third water conduit 2313 is closed. Water introduced into first water conduit 2321 flows down through the outlet of detergent box 2400 toward lower flow path 2370 and into washing tub 2500. When the predetermined water supply is completed, first water conduit 2311 is closed. Furthermore, in Embodiment 3, as described below, first water conduit 2311 is closed after third water conduit 2313 is opened.

[0302] Next, the path cleaning is performed. During path cleaning, water is supplied solely to the third water conduit 2313. Consequently, water introduced from the water supply valve 2310 is not diverted to the first water conduit 2321 or the third water conduit 2323, but is supplied solely to the third water conduit 2323. Therefore, the amount of water passing through the third water conduit 2323 during path cleaning is greater than the amount of water passing through the third water conduit 2323 during detergent dispensing. Water that has passed through the automatic dispensing device internal path 2325 flows down the wash path outlet 2326 to the lower portion 2370 of the flow path, from which it is dispensed into the washing tub 2500.

[0303] During path cleaning, residual detergent in the automatic liquid dispensing device 2301 and the lower portion of the flow path 2370 is reliably rinsed and discharged into the washing tank 2500. This prevents residual detergent from mixing with the softener added during the final rinse cycle, and also prevents the precipitation of foreign matter generated when the detergent and softener mix. Furthermore, path cleaning can remove foreign matter even if it is present using a strong water flow.

[0304] During the final rinse cycle, softener three-way valve 2382, part of three-way valve 2380, is opened, connecting the softener container 2460 to the path of pump unit 2390. Pump unit 2390 rotates its motor, moving piston 2395 up and down, drawing an appropriate amount of softener from pump unit inlet 2392a and dispensing it from pump unit outlet 2392b. The softener dispensed from pump unit outlet 1392b reaches lower flow path 2370.

[0305] Before or during the actuation of piston 2395, second water conduit 2312 opens, and water begins to be supplied to second water conduit 2322. As shown by water flow Y2, the water introduced into second water conduit 2322 flows through softener inlet 2334 into manual softener dispenser 2430, flows from the outlet of manual softener dispenser 2430 down flow path lower portion 2370, and dissolves the softener accumulated in flow path lower portion 2370, discharging it into washing tub 2500.

[0306] Next, the softener three-way valve 2382 is closed, blocking the path between the softener container 2460 and the pump unit 2390. This connects the path from the third water guide cylinder 2313 to the automatic liquid agent dispensing device 2301. The third water guide cylinder 2313 is then opened to flush the softener path within the three-way valve 2380 and pump unit 2390. This path cleaning prevents residual softener from mixing with the detergent dispensed during the next wash cycle and suppresses the precipitation of foreign matter generated when the detergent and softener mix. Furthermore, path cleaning can remove foreign matter even if it is present using a strong water flow.

[0307] [3-3. Functions, etc.]

[0308] As described above, washing machine 2100 in Embodiment 3 includes housing 2600, washing tub 2500, a water conduit, detergent container 2450, softener container 2460, automatic liquid dispensing device 2301, and controller 2900. Washing tub 2500 is located within housing 2600 and accommodates laundry. The water conduit supplies water introduced from water supply valve 2310 to washing tub 2500. Detergent container 2450 and softener container 2460 are examples of liquid containers disclosed herein and store liquid within them. Automatic liquid dispensing device 2301 injects and delivers liquid stored in detergent container 2450 and softener container 2460 into washing tub 2500. The water conduit includes a fifth water channel, a sixth water channel, and a combined water channel. The fifth water channel comprises first water conduit 2321 and second water conduit 2322, which supply water to washing tub 2500 without passing through automatic liquid dispensing device 2301. The sixth water channel is third water conduit 2323, which supplies water to washing tub 2500 via automatic liquid agent dispenser 2301. The confluent water channel is the lower portion 2370 of the flow path where first water conduit 2321, second water conduit 2322, and third water conduit 2323 merge. The controller 2900 activates the water supply valve 2310 to supply water to first water conduit 2321 and activates the automatic liquid agent dispenser 2301 to inject and deliver the liquid agent into washing tub 2500.

[0309] This allows the detergent supplied to washing tub 2500 to be diluted at junction 2375 , thereby preventing the original liquid of the liquid agent from adhering to the laundry.

[0310] As in washing machine 2100 of Embodiment 3, controller 2900 may intermittently drive automatic liquid injector 2301 and drive water supply valve 2310 to supply water to third water conduit 2323 while automatic liquid injector 2301 is stopped.

[0311] Thus, the detergent liquid can be fed into washing tub 2500 for a long time while maintaining the concentration of the fed detergent liquid within a predetermined range.

[0312] Therefore, the detergent liquid can be completely poured onto the clothes inside washing tub 2500 .

[0313] Alternatively, as in washing machine 2100 of embodiment 3, lower flow path portion 2370 may be provided below first water conduit 2321 and second water conduit 2322 , and foam generation water inlets 2335 for injecting water toward lower flow path portion 2370 may be provided in first water conduit 2321 and second water conduit 2322 .

[0314] Thus, the detergent liquid is foamed by the water injected strongly from the foam generation water injection port 2335 .

[0315] As in washing machine 2100 of the third embodiment, flow path lower portion 2370 may include a plurality of pins formed to extend vertically below water inlet 2335 for foam generation.

[0316] Thus, water is injected from the foam generation water injection port 2335 into the detergent liquid accumulated around the pin, so that foam is generated in the detergent liquid.

[0317] (Variation of Embodiment 3)

[0318] As described above, Embodiment 3 has been described as an example of the technology of the present disclosure. However, the technology of the present disclosure is not limited thereto.

[0319] Therefore, a modified example of the third embodiment will be described below.

[0320] In Embodiment 3, a vertical washing machine 2100 is described as an example of the washing machine of the present disclosure. The washing machine of the present disclosure is not limited to a vertical washing machine, and may be a drum washing machine or a twin-tub washing machine.

[0321] In Embodiment 3, the operation of supplying water to first water conduit 2321 and driving automatic liquid agent injection device 2301 to inject liquid agent is described as an example of a configuration in which the water supply unit is driven to supply water to the fifth water channel and the automatic liquid agent injection device is driven to inject liquid agent. The fifth water channel is not limited to first water conduit 2321, as long as it supplies water to the washing tub without passing through the automatic liquid agent injection device. For example, it can also be second water conduit 2322. Furthermore, in Embodiment 3, the operation of injecting liquid detergent is described as an example of a configuration in which the automatic liquid agent injection device is driven to inject liquid agent. The liquid agent is not limited to liquid detergent and can also be, for example, softener.

[0322] In Embodiment 3, as an example of a foam generation water inlet of the present disclosure, a foam generation water inlet 2335 is described, which injects water into the lower portion of the flow path 2370 without passing through the detergent box 2400. The foam generation water inlet of the present disclosure is not limited to the foam generation water inlet 2335, as long as it injects water into the combined water path. For example, the foam generation water inlet may be configured to inject water into the lower portion of the flow path via the detergent box, or may be configured to function as a powder detergent inlet, a liquid detergent inlet, or a softener inlet.

[0323] Industrial applicability

[0324] The present disclosure can be applied to a device having an automatic liquid agent feeding device, and more specifically, to a vertical washing machine, a drum washing machine, a twin-tub washing machine, a dishwasher, and the like.

[0325] Description of Reference Numerals

[0326] 100, 1100, 2100, washing machine; 200, 1200, 2200, water supply port; 210, 1210, 2210, water supply hose; 300, 1300, 2300, water supply unit; 301, 1301, 2301, automatic liquid dispensing device; 302, 1302, 2302, detergent container insertion port; 303, 1303, 2303, softener container insertion port; 310, 1310, 2310, water supply valve; 311, 1311, 2311, first water guide cylinder; 312, 1312, 2312, second water guide cylinder; 313, 1313, 2313, third water guide cylinder; 314, 1314, 2314, bus pump; 320, 1320 , 2320, water supply unit housing; 321, 1321, 2321, first water conduit; 322, 1322, 2322, second water conduit; 323, 1323, 2323, third water conduit; 324, 1324, 2324, cleaning path water inlet; 325, 1325, 2325, automatic input device internal path; 326, 1326, 2326, cleaning path outflow; 330, 1330, 2330, detergent box flow path; 331, 1331, 2331, powder detergent water inlet; 332, 1332, 2332, liquid detergent water inlet; 333, 1333, 2333, bus pump water inlet; 334, 1334, 2 334, softener water inlet; 340, 1340, 2340, flow path cover; 350, 1350, 2350, detergent box storage; 360, 1360, container storage; 360a, 1360a, 2360a, automatic detergent injection connection; 360b, 1360b, automatic softener injection connection; 370, 1370, 2370, flow path lower portion; 380, 1380, 2380, three-way valve; 381, 1381, 2381, detergent three-way valve; 382, ​​1382, 2382, softener three-way valve; 390, 1390, 2390, pump unit; 391, 1391, 2391, pump internal flow path; 392a, 1392a, 2392a, pump unit inlet; 392b, 1392b, 2392b, pump unit outlet; 393, 1393, 2393, inlet check valve; 394, 1394, 2394, outlet check valve; 395, 1395, 2395, piston; 397, 1397, 2397, cylinder; 400, 1400, 2400, detergent box; 410, 1410, 2410, manual powder detergent dispensing unit; 420, 1420, 2420, manual liquid detergent dispensing unit; 430, 1430, 2430, manual softener dispensing unit; 450, 1450, 2450, detergent container; 450a, 1450a, 2450a, detergent container remaining scale;451, 1451, 2451, detergent container feeding part; 452, 1452, 2452, detergent automatic feeding insertion port; 460, 1460, 2460, softener container; 460a, 1460a, 2460a, softener container remaining scale; 461, 1461, 2461, softener container feeding part; 462, 1462, 2462, softener automatic feeding insertion port; 500, 1500, 2500, washing tub; 600, 1600, 2600, housing; 610, 1610, 2610, lower housing; 620, 1620, 2620, upper housing; 621, 1621, 2621, inlet; 700, 1700, 2700, lid; 800, 1800, 2800, operating unit; 900, 1900, 2900, control unit; 2360, detergent container Storage unit; 2318, cleaning path entrance; 2319, cleaning path; 2335, foam generation water inlet; 2361, detergent container storage claw; 2362, detergent container storage contact surface; 2363, storage unit; 2364, drop port; 2365, softener container storage unit; 2365a, softener automatic feeding connection; 2368, stopper; 2371, flow path lower outlet; 237 2. First flow path lower portion; 2373, second flow path lower portion; 2374, washing path outlet; 2375, confluence portion; 2376, foam generating portion; 2377, pin; 2454, locking lever; 2454a, locking lever grip; 2455, spring mechanism; 2455a, spring; 2456, detergent container housing; 2457, container protrusion; 2464, inlet tilt portion; 2470, filter.

Claims

1. A washing machine, wherein: The washing machine includes: case; a washing tank, which is provided inside the housing and receives laundry; a water guide path for supplying water introduced from the water supply valve to the washing tub; a liquid agent container storing therein an amount of liquid agent capable of carrying out multiple operations; an automatic liquid agent feeding device having a pump unit for injecting and delivering the liquid agent stored in the liquid agent container into the washing tank, the pump unit comprising a pump flow path, a cylinder, a piston, an inlet check valve, and an outlet check valve; the pump flow path being arranged between the pump unit inlet and the pump unit outlet, the cylinder being arranged midway in the pump flow path, the piston being moved by the rotational driving force of the motor, the inlet check valve being arranged at the pump unit inlet and being configured to open by the action of the piston, and the outlet check valve being arranged at the pump unit outlet and being configured to open by the action of the piston; and Control Department, The water conduit includes a third water path for supplying water to the washing tub without passing through the automatic liquid agent feeding device, and a fourth water path for supplying water to the washing tub via the pump flow path of the automatic liquid agent feeding device. The water supply valve includes a third valve for supplying water to the third water channel and a fourth valve provided upstream of the liquid automatic injection device and for supplying water to the fourth water channel. The third water channel and the fourth water channel are formed in a branched manner so as to independently communicate with the third valve and the fourth valve, respectively. The control unit drives the fourth valve to open after a predetermined time has passed after driving the third valve to open.

2. The washing machine according to claim 1, wherein The control unit closes the third valve after a predetermined time has elapsed after the fourth valve is opened.

3. The washing machine according to claim 1 or 2, wherein: The control unit drives the third valve to open and then closes the fourth valve after a predetermined time has elapsed.

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