WO2022224678A1

WO2022224678A1 - Washing machine

Info

Publication number: WO2022224678A1
Application number: PCT/JP2022/013496
Authority: WO
Inventors: 丁英徐; 徹小立; 裕曵野
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2021-04-21
Filing date: 2022-03-23
Publication date: 2022-10-27
Also published as: JP2022166354A; TW202244354A

Abstract

The washing machine of the present disclosure comprises a casing, a washing tank that is provided inside the casing and accommodates laundry, a water-conducting path, a solution tank, and an automatic solution input device. The water-conducting path supplies water introduced from a feed valve to the washing tank. The liquid tank stores a liquid in the inside thereof. The automatic liquid putting device injects the liquid stored in the liquid tank into the washing tank. The water-conducting path includes a first water path for supplying water to the washing tank without passing through the automatic solution input device, a second water path for supplying water to the washing tank through the automatic solution input device, and a retention part which, in the installed state thereof, is disposed below the first water path and downstream from the second water path, and retains liquid detergent supplied from the second water path, and the washing machine supplies water to the retention part via the first water path when a prescribed time has elapsed after driving the automatic solution input device to inject the solution.

Description

washing machine

This disclosure relates to washing machines.

Patent Document 1 discloses a washing machine equipped with an automatic liquid injection device.

The washing machine in Patent Document 1 includes a liquid agent tank that stores liquid agent, an automatic liquid agent injection device that automatically supplies the liquid agent in the liquid agent tank into the washing tub, a water supply valve that communicates with the automatic liquid agent injection device through a water channel, Prepare. A washing machine drives an automatic liquid injection device to supply liquid into the washing tub, and then opens a water supply valve to supply water into the automatic liquid injection device.

WO2019/039140

The present disclosure provides a washing machine that efficiently mixes a liquid agent discharged from an automatic liquid agent injection device with water.

A washing machine according to the present disclosure includes a housing, a washing tub that is provided inside the housing and accommodates laundry, a water guide path, a liquid agent tank, and an automatic liquid agent injection device. The water guide path supplies the water introduced from the water supply valve to the washing tub. The liquid agent tank stores the liquid agent inside. The liquid agent automatic injection device injects the liquid agent stored in the liquid agent tank into the washing tub. The water supply route includes a first water channel for supplying water to the washing tub without passing through the automatic liquid injection device, a second water channel for supplying water to the washing tub through the automatic liquid injection device, and in the installed state, the first water channel. a retention section disposed below and downstream of the second water channel, in which the detergent liquid supplied from the second water channel stays. Then, the washing machine drives the liquid agent automatic injection device to feed the liquid agent, and after a lapse of a predetermined time, supplies water to the retention portion through the first water channel.

The washing machine according to the present disclosure efficiently mixes the liquid agent discharged from the automatic liquid agent injection device with water.

FIG. 1 is an external perspective view showing the configuration of the washing machine according to Embodiment 1, with the lid body closed. FIG. 2 is an external perspective view showing the configuration of the washing machine according to Embodiment 1, with the lid body opened. 3 is an external perspective view showing the configuration of the water supply unit and its surroundings of the washing machine according to Embodiment 1, with the detergent case, the detergent tank, and the softener tank drawn out. FIG. 4 is a rear view showing the configuration of the water supply unit and its surroundings of the washing machine according to Embodiment 1. FIG. 5 is an exploded perspective view showing the configuration of the water supply unit and its surroundings of the washing machine according to Embodiment 1. FIG. FIG. 6 is a top view showing the configuration of the water supply unit and its surroundings of the washing machine according to Embodiment 1, excluding the channel cover. 7 is a top view showing the flow of water in the water supply unit casing of the washing machine according to Embodiment 1. FIG. 8 is a cross-sectional view FF of the water supply unit shown in FIG. 7. FIG. 9 is a top view showing the configuration of the water supply unit and its surroundings of the washing machine according to Embodiment 1, with the detergent case, the detergent tank, and the softener tank pulled out, excluding the channel cover. 10 is a BB cross-sectional view of the water supply unit shown in FIG. FIG. 11 is an EE cross-sectional view of the water supply unit shown in FIG. 12 is a CC cross-sectional view of the water supply unit shown in FIG. 7. FIG. 13 is a cross-sectional view of the water supply unit shown in FIG. 7 along the line AA. FIG. 14 is a DD sectional view of the water supply unit shown in FIG. FIG. 15 is an enlarged view of the main part around the automatic detergent injection connector in a state where the detergent tank is housed in the detergent tank housing. 16 is a top view showing the configuration of the lower portion of the flow path of the washing machine according to Embodiment 1. FIG. 17 is a top view showing the flow of water in the lower portion of the channel of the washing machine according to Embodiment 1. FIG. 18 is a timing chart in the washing operation of the washing machine according to Embodiment 1. FIG.

Hereinafter, embodiments will be described in detail with reference to the drawings. It should be noted that the accompanying drawings and the following description are provided to allow those skilled in the art to fully understand the present disclosure and are not intended to limit the claimed subject matter thereby.

(Embodiment 1)
A washing machine 100 according to Embodiment 1 as an example of the washing machine according to the present disclosure will be described below with reference to FIGS. 1 to 18. FIG.

[1-1. Constitution]
[1-1-1. Configuration of washing machine]
1 and 2 are external perspective views showing the configuration of washing machine 100 according to Embodiment 1. FIG. 1 shows a state in which lid 700 is closed, and FIG. 2 shows a state in which lid 700 is open. each shown. In Embodiment 1, the vertical direction in the state where washing machine 100 is installed as shown in FIGS. 1 and 2 (corresponding to the installation state in the present disclosure) may be described as the up-down direction. Moreover, in Embodiment 1, the side on which operation unit 800 of washing machine 100 is present in FIGS. 1 and 2 may be referred to as the rear, and the opposite side may be referred to as the front. That is, the user generally stands on the front side of the washing machine 100, loads laundry such as clothes into the washing machine 100, and performs various operations for operating the washing machine 100. FIG. Note that the laundry in the present disclosure is not limited to clothing, and refers to, for example, bedding, curtains, rugs, cloth such as shoes, leather products, and other items that can be washed in various known washing machines.

As shown in FIGS. 1 and 2, the washing machine 100 includes a housing 600, a lid body 700, and an operation section 800. Housing 600 includes a lower housing 610 and an upper housing 620 . A washing tub 500 is accommodated in the lower housing 610 . The washing tub 500 is formed into a cylindrical body that opens upward, accommodates the laundry, and performs the washing operation of washing the laundry. The washing tub 500 is rotatably enclosed by an outer tub (not shown) that stores water. The washing action may be the action performed by the washing tub of various known washing machines. The principles of this embodiment are not limited to any particular cleaning action performed by washing tub 500 .

The upper housing 620 is arranged above the lower housing 610 , and the upper housing 620 is formed with a laundry inlet 621 communicating with the washing tub 500 . The lid 700 is attached to the rear part of the upper housing 620 and covers the inlet 621 so as to be openable and closable. When the user rotates lid 700 upward, washing tub 500 is exposed through inlet 621 . The user can put the laundry into the washing tub 500 through the inlet 621 .

An operation unit 800 is arranged at the rear of the upper housing 620 and behind the insertion port 621 . A user can operate the operation unit 800 to set various operations of the washing tub 500 . Washing machine 100 includes a control device (not shown) in housing 600, which controls, for example, water supply valve 310, detergent three-way valve 381, and softener three-way valve 382 in response to user's operation of operation unit 800. In addition, it controls the operation of the washing machine 100 as a whole. The controller has a computer system with a processor and memory. The computer system functions as a control device by the processor executing the program stored in the memory. Although the program executed by the processor is recorded in advance in the memory of the computer system here, it may be recorded in a non-temporary recording medium such as a memory card and provided, or may be provided through a telecommunication line such as the Internet. may be provided through

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 so as to introduce tap water from a tap.

As shown in FIG. 2, in the upper housing 620, the detergent tank 450, the softener tank 460, and the detergent case 400 are arranged so that the front surface is flush with the water supply unit 300 (see FIG. 5). are placed.

FIG. 3 is an external perspective view showing the configuration of the water supply unit 300 and its surroundings, with the detergent case 400, the detergent tank 450 and the softener tank 460 pulled out. As shown in FIG. 3, the detergent tank 450 and the softener tank 460 are configured to be able to store an amount of detergent that allows multiple operations. Specifically, the detergent tank 450 stores a liquid detergent, and the softener tank 460 stores a softener. The detergent tank 450 and the softener tank 460 are formed with a detergent tank inlet 451 and a softener tank inlet 461 whose upper surfaces are open so that liquid can be injected. Detergent tank 450 and softener tank 460 are respectively provided with a detergent tank remaining scale 450a and a softener tank remaining scale 460a made of a transparent material, so that the user can visually check the amount of detergent. can.

On the other hand, the detergent case 400 is used by the user to put in the necessary amount of detergent for one operation. The detergent case 400 is provided with a manual powder detergent input section 410, a manual liquid detergent input section 420, and a manual softener input section 430 to input powder detergent, liquid detergent, and softener, respectively.

A portion of the lid body 700 is transparent. Accordingly, even when the lid body 700 is closed, the user can visually check the detergent tank remaining amount scale 450a and the softener tank remaining amount scale 460a, and the amount of the agent stored in the detergent tank 450 and the softening agent tank 460 can be checked. You can check the remaining amount.

[1-1-2. Water supply unit]
FIG. 4 is a rear view showing the configuration of the water supply unit 300 and its surroundings. FIG. 5 is an exploded perspective view showing the configuration of the water supply unit 300 and its surroundings. As shown in FIG. 5, the water supply unit 300 mainly includes a water supply unit housing portion 320 formed in a substantially box shape, a flow path lid portion 340 covering the upper surface of the water supply unit housing portion 320, and a water supply unit housing. and a channel lower portion 370 attached to the lower bottom portion of the body portion 320 .

As shown in FIGS. 3 and 4, a water supply valve 310 is attached to the left side of the water supply unit casing 320 as viewed from the rear side, allowing the water introduced from the water supply port 200 to pass therethrough in an openable and closable manner. Water introduced from the water supply valve 310 is introduced into the water supply unit casing 320 while the water supply valve 310 is open.

A bus pump 314 that sucks water from the outside of the washing machine 100 via a hose (not shown) is arranged in the center of the back surface of the water supply unit housing 320 . The bus pump 314 is fixed to the water supply unit casing 320 with screws, and is directly connected to a first water guide path 321 (see FIG. 8), which will be described later, via a water inlet 333 for the bus pump. The bus pump 314 can start suction and discharge operations by being supplied with water from the first water conduit 321 .

As shown in FIG. 5, the water supply unit housing portion 320 is formed in a substantially box-like shape that opens forward. The water supply unit housing portion 320 includes a detergent tank housing portion 360, a softener tank housing portion 365, and a detergent case housing portion 350 as internal spaces. Detergent tank accommodating portion 360 accommodates detergent tank 450 , softener tank accommodating portion 365 accommodates softener tank 460 , and detergent case accommodating portion 350 accommodates detergent case 400 so that they can be pulled out independently.

The detergent case channel portion 330 is arranged as the upper surface of the detergent case housing portion 350, and the detergent case channel portion 330 has a first water guide channel 321 and a second water guide channel 322 (see FIG. 8), which will be described later. formed.

As shown in FIGS. 3 and 4, the liquid agent automatic injection device 301 is attached to the right side of the water supply unit casing 320 when viewed from the back. The liquid agent automatic injection device 301 will be described later.

[1-1-3. Conveyance route]
As shown in FIGS. 4 and 5, the water supply valve 310 includes three on-off valves, a first water conduit 311, a second water conduit 312, and a third water conduit 313, and each of the on-off valves can be opened and closed independently. is configured to

FIG. 6 is a top view showing the configuration of the water supply unit 300 and its surroundings, excluding the channel cover 340. FIG. FIG. 7 is a top view showing the flow of water in the water supply unit casing 320. FIG. FIG. 8 is a cross-sectional view of the water supply unit 300 shown in FIG. 7 along line FF. FIG. 9 is a top view showing the structure of the water supply unit 300 and its surroundings, with the detergent case 400, the detergent tank 450 and the softener tank 460 pulled out, excluding the channel cover 340. FIG. FIG. 10 is a BB cross-sectional view of the water supply unit 300 shown in FIG. As shown in FIGS. 6 to 10, the water supply unit casing 320 is formed with a water guide path through which water introduced from the water supply valve 310 flows, and the water supply valve 310 and the water guide path are directly connected. . The water conduit is branched so as to independently communicate with the first water conduit 311, the second water conduit 312, and the third water conduit 313, respectively. The flow path communicating with the first water conduit 311 is the first water conduit 321, the flow path communicating with the second water conduit 312 is the second water conduit 322, and the flow path communicating with the third water conduit 313 is the third water conduit 323. defined as Here, the water conduit includes the first water conduit 321 and the second water conduit 322, the third water conduit 323 which is the second water conduit, and the foam generating section 376 (Fig. 17) which is the retention section. see) and, including.

[1-1-4. Detergent Case, First Water Conveyance Path, Second Water Conveyance Path]
As shown in FIGS. 3 and 6 to 9, the first water conduit 321 and the second water conduit 322 direct the water supplied from the first water conduit 311 and the second water conduit 312 to the detergent case channel portion 330. It is configured to guide and inject water into the detergent case 400 located below. That is, the first water channel 321 and the second water channel 322, which are the first water channels, supply water to the washing tub 500 without passing through the liquid agent automatic injection device 301 .

Inside the detergent case 400, a manual powder detergent input unit 410, a manual liquid detergent input unit 420, and a manual softener input unit 430 are provided. Powder detergent manual injection unit 410, liquid detergent manual injection unit 420, and softening agent manual injection unit 430 are configured so that the user can insert each agent.

As shown in FIGS. 6 and 8 , the first water guide path 321 includes a powder detergent water inlet 331 formed above the manual powder detergent input portion 410 for vertical communication, and a manual liquid detergent input portion 420 . and a liquid detergent inlet 332 formed for top-to-bottom communication above. The second water guide path 322 is provided with a softening agent water inlet 334 formed above the softening agent manual injection section 430 to allow the top and bottom to communicate with each other.

The manual powder detergent input unit 410, the manual liquid detergent input unit 420, and the manual softener input unit 430 are each provided with a discharge port (not shown) for discharging the liquid accumulated therein. The liquid discharged from the discharge port falls to the flow channel lower portion 370 .

A foam-generating water inlet 335 is provided in the first water conduit 321 . The foam-generating water inlet 335 is arranged behind the detergent case 400 housed in the detergent case housing portion 350 . As a result, the water that is poured downward from the foam-generating water inlet 335 falls into the flow channel lower portion 370 without passing through the detergent case accommodating portion 350 .

[1-1-5. Automatic injection device, third water conduit]
FIG. 11 is an EE cross-sectional view of the water supply unit 300 shown in FIG. FIG. 12 is a CC cross-sectional view of the water supply unit 300 shown in FIG. FIG. 13 is an AA cross-sectional view of the water supply unit 300 shown in FIG. FIG. 14 is a DD cross-sectional view of the water supply unit 300 shown in FIG. As shown in FIG. 11 , the third water conduit 323 is formed substantially horizontally along the back surface of the water supply unit casing 320 and opens on the back side at the cleaning conduit water conduit 324 . The cleaning channel water inlet 324 is connected to an automatic injection device internal route 325 to be described later, and allows the third water conduction route 323 and the liquid agent automatic injection device 301 to communicate with each other. That is, the third water conduit 323 , which is the second water channel, supplies water to the washing tub 500 through the liquid agent automatic injection device 301 . The liquid agent automatic injection device 301 is arranged on the back side of the detergent tank housing portion 360 and the softener tank housing portion 365 . The liquid agent automatic injection device 301 is connected to a detergent tank 450 and a softener tank 460 housed in a detergent tank housing portion 360 and a softener tank housing portion 365, respectively, as will be described later.

FIG. 15 is an enlarged view of the main part around the automatic detergent injection connecting portion 360a when the detergent tank 450 is housed in the detergent tank housing portion 360. FIG. As shown in FIG. 15, a detergent tank insertion port 302 is provided on the back side of the detergent tank 450, and inside the detergent tank insertion port 302 is a detergent tank non-return mechanism that is opened by being pushed in. A valve 302a is provided. Similarly, on the back side of the softener tank 460, a softener tank insertion port 303 and a softener tank check valve that is opened by being pushed are provided. With the detergent tank 450 attached to the detergent tank housing portion 360, an automatic detergent insertion insertion port 452, which will be described later, is inserted into the detergent tank insertion port 302, and the detergent tank check valve 302a is opened to release the liquid detergent. It is configured so that it can be supplied. Similarly, the softener tank 460 is attached to the softener tank housing portion 365, and the softener tank check valve 462 is inserted into the softener tank insertion port 303 to open the softener tank check valve. is opened so that the softener can be supplied.

An automatic detergent injection connection portion 360a and an automatic softener injection connection portion 365a are provided on the inner rear surfaces of the detergent tank housing portion 360 and the softener tank housing portion 365, respectively. The automatic detergent injection connection portion 360 a and the automatic softener injection connection portion 365 a are configured to surround the automatic detergent injection insertion port 452 and the automatic softener injection insertion port 462 of the automatic liquid agent injection device 301 .

The detergent automatic injection slot 452 and the softener automatic injection slot 462 are formed to protrude forward. Detergent tank 450 and softener tank 460 are housed in detergent tank housing portion 360 and softener tank housing portion 365, respectively, and automatic detergent injection insertion port 452 is connected to detergent tank 450 and automatic softener injection insertion port. 462 are connected to the softener tank 460 respectively.

A storage portion 363 is provided on the inner bottom surface of the detergent tank housing portion 360 . The storage portion 363 is a recess capable of storing liquid, and is configured as a gap separating the bottom surface of the detergent tank 450 and the inner bottom surface of the detergent tank housing portion 360 .

A drop port 364 communicating with the flow channel lower portion 370 is formed at a position adjacent to the storage portion 363 on the inner bottom surface of the detergent tank housing portion 360 . The drop port 364 is arranged at a position below the detergent tank insertion port 302 when the detergent tank 450 is housed in the detergent tank housing portion 360 . The drop port 364 causes the liquid detergent that has leaked from the detergent tank insertion port 302 or the automatic detergent injection insertion port 452 to flow down to the washing path 319 .

The liquid agent automatic injection device 301 includes an automatic detergent injection insertion port 452 and an automatic softener injection insertion port 462, a three-way valve 380, a pump unit 390, and an automatic injection device path 325. A three-way valve 380 switches between liquid detergent, softener and water. The pump unit 390 sucks and discharges liquid. The automatic injection device internal path 325 connects the three-way valve 380 and the pump unit 390 .

The three-way valve 380 includes a detergent three-way valve 381 and a softener three-way valve 382 that can be independently controlled to open and close. The detergent three-way valve 381 is arranged so as to communicate with the washing path water conduit 324 , the automatic detergent injection insertion port 452 , and the softener three-way valve 382 . Also, the softener three-way valve 382 is arranged so as to communicate with the detergent three-way valve 381 , the softener automatic injection port 462 , and the automatic injection device internal path 325 . As shown in FIG. 13 , the downstream side of the three-way valve 380 is connected to the pump unit 390 via the automatic loading device internal path 325 . Thus, the three-way valve 380 is connected to the automatic injection device path 325 , the automatic detergent injection insertion port 452 , the automatic softener injection insertion port 462 , and the pump unit 390 . Washing machine 100 can control the flow of detergent, softener, and water by opening and closing at least one of detergent three-way valve 381 and softener three-way valve 382 .

The pump unit 390 includes a pump internal channel 391 , a cylinder 397 and a piston 395 . The in-pump channel 391 is provided between the pump unit inlet 392a and the pump unit outlet 392b. The cylinder 397 is provided in the middle of the pump internal flow path 391 . The piston 395 moves up and down by the rotational driving force of a motor (not shown).

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.

The inlet check valve 393 is configured to open when the piston 395 operates under negative pressure, and the outlet check valve 394 is configured to open when the piston 395 operates under positive pressure.

The automatic injection device internal path 325 is connected to the flow path lower part 370 via the cleaning path outlet 326 downstream of the pump unit 390 .

[1-1-6. Flow path lower part]
FIG. 16 is a top view showing the configuration of the flow channel lower portion 370. As shown in FIG. FIG. 17 is a top view showing the flow of water in the flow path lower portion 370. FIG. As shown in FIG. 16 , the lower channel portion 370 includes a first lower channel channel 372 , a cleaning channel 319 , a second lower channel channel 373 , and a lower channel outlet 371 . The first lower flow path 372 communicates with the wash path outlet 326 . The cleaning path 319 is provided below the drop port 364 . The second lower channel path 373 allows the liquid discharged from the detergent case 400 to pass therethrough.

The cleaning channel 319 is provided with a cleaning channel inlet 318 that introduces the liquid from the first channel lower channel 372 and a cleaning channel outlet 374 that causes the liquid to flow out to the first channel lower channel 372 . The cleaning path entrance 318 is provided upstream of the drop point of the liquid dropping from the drop port 364 , and the cleaning path outlet 374 is provided downstream of the drop point of the liquid dropping from the drop port 364 . Since the cleaning channel inlet 318 is configured to have a channel cross-sectional area smaller than that of the first channel lower channel 372, the amount of water passing through the cleaning channel 319 is relatively small. As a result, washing machine 100 can prevent water passing through washing path 319 from overflowing upward from drop port 364 and entering detergent tank accommodating portion 360 .

The foam generation part 376 is provided downstream of the first flow path lower path 372 and arranged below the foam generation water inlet 335 . That is, the foam generation section 376 is provided at a position where the liquid passing through the first flow path lower path 372 and the water injected from the foam generation water injection port 335 collide. In other words, the foam generator 376 is arranged below the first water conduit 321 and the second water conduit 322 and downstream of the third water conduit 323, and the detergent liquid supplied from the third water conduit 323 stays.

The foam generator 376 includes a plurality of pins 377, a peripheral rib 376a, a foam generator inlet 376c, and a foam generator outlet 376b. A plurality of pins 377 are formed to protrude upward. A peripheral rib 376 a surrounds the bubble generator 376 . The foam generator entrance 376c is the entrance to the area surrounded by the peripheral ribs 376a. The foam generator outlet 376b is the outlet from the area surrounded by the peripheral ribs 376a.

The first lower channel path 372 communicates with the second lower channel path 373 at the confluence portion 375 . The channel lower discharge port 371 is provided downstream of the confluence portion 375 and is formed to open downward so as to drop the liquid into the washing tub 500 .

[1-2. motion]
The operation of washing machine 100 configured as described above will be described below.

[1-2-1. Water flow in washing operation when using the automatic injection function]
6, 8, 10 to 14, and 17, the flow of water supplied from the first water conduit 311 is X, the flow of water supplied from the second water conduit 312 is Y, and the third water conduit Let Z be the flow of water supplied from 313 .

FIG. 18 is a timing chart for washing machine operation of washing machine 100 . As shown in FIG. 18, before starting the washing operation, the liquid agent automatic injection device 301 is driven and the liquid agent is automatically injected. First, the detergent three-way valve 381, which is a part of the three-way valve 380, is opened while the third water conduit 313 is closed, and the detergent tank 450 and the pump unit 390 are communicated with each other. The pump unit 390 rotates the motor and vertically moves the piston 395 to suck an appropriate amount of liquid detergent from the pump unit inlet 392a and discharge it from the pump unit outlet 392b. The discharged detergent flows into the first channel lower channel 372 via the cleaning channel outlet 326 .

Suction and discharge of the liquid agent by the pump unit 390 are performed intermittently. While the piston 395 is de-actuated, the detergent dispensing action is performed. The actuation of the piston 395 and the action of dispensing detergent are alternately performed.

At the start of the detergent delivery operation, the detergent three-way valve 381 is closed, the path between the detergent tank 450 and the pump unit 390 is cut off, and the path from the third water conduit 313 to the liquid agent automatic injection device 301 is communicated. Subsequently, the third water conduit 313 is opened while the first water conduit 311 is closed. As a result, the water introduced from the water supply valve 310 is supplied only to the third water conduit 323 without being split into the first water conduit 321 and the third water conduit 323 . Therefore, the water supply valve 310 can supply a sufficient amount of water to the third water conduit 323 .

Like the water flow Z, the water introduced from the third water conduit 313 passes through the third water conduit 323 and reaches the automatic injection device inner conduit 325 via the cleaning conduit water conduit 324, and flows into the pump. Pass road 391. Thus, in the detergent delivery operation, water is supplied to the three-way valve 380 and the pump unit 390 , and the detergent remaining inside the three-way valve 380 and the pump unit 390 is delivered to the flow path lower part 370 . The detergent liquid that has flowed into the first channel lower channel 372 through the cleaning channel outlet 326 reaches the foam generator 376 downstream of the cleaning channel outlet 374 . The detergent liquid that has reached the foam generating portion 376 is diffused by the pins 377 and stays in the area surrounded by the peripheral ribs 376a.

After that, the first water conduit 311 is opened, and water supply to the first water conduit 321 is started. Like the water flow X, the water introduced into the first water guiding path 321 passes through the powder detergent water inlet 331, the liquid detergent water inlet 332, the bath pump water inlet 333, and the foam generation water inlet 335. , powder detergent manual input unit 410 , liquid detergent manual input unit 420 , bath pump 314 and foam generator 376 . The water poured into the powder detergent manual input unit 410 and the liquid detergent manual input unit 420 flows down to the lower channel 370 through the outlet, dissolves the liquid detergent in the lower channel 370, and is added to the washing tub 500. be done.

With the first water conduit 311 opened, the foam-generating water inlet 335 injects water toward the foam-generating part 376 . The injected water collides with the detergent liquid remaining in the foam generator 376 to generate detergent foam. Most of the generated detergent foam flows out of the foam generator 376 over the peripheral ribs 376a. The detergent liquid and water exit the foam generator 376 via the foam generator outlet 376b. Detergent foam, detergent liquid, and water pass through the first channel lower channel 372 and join the second channel lower channel 373 , and are introduced into the washing tub 500 from the channel lower outlet 371 .

Since the liquid detergent and the detergent liquid have higher viscosity than water, the flow velocity when passing through the first flow path lower path 372 decreases. Therefore, washing machine 100 according to the present embodiment is configured to provide a waiting time t between the driving of piston 395 and the detergent feeding operation when automatic fluid injection device 301 is driven for a predetermined time or more. there is That is, when the amount of the liquid discharged by the automatic liquid injection device 301 is equal to or greater than a predetermined amount, the washing machine 100 starts the detergent feeding operation after the waiting time t has elapsed after the driving of the piston 395 is stopped. The waiting time t is set as the time required for the detergent remaining in the first flow path lower path 372 to reach the foam generator 376 . As a result, the detergent remaining in the first flow channel lower path 372 reaches the foam generation section 376 and stays therein, and is diluted with the water injected from the foam generation water inlet 335 . Therefore, even when the amount of the liquid agent injected by the automatic liquid agent injection device 301 is large, the liquid agent and water can be reliably mixed, and the undiluted liquid detergent can be prevented from adhering to the clothes accommodated in the washing tub 500.例文帳に追加

Next, route cleaning will be carried out. In channel cleaning, the third water conduit 313 is opened while the first water conduit 311 is closed. As a result, the water introduced from the water supply valve 310 is supplied only to the third water conduit 323 without being split into the first water conduit 321 and the third water conduit 323 . The water that has passed through the path 325 in the automatic injection device flows down to the lower flow path 370 through the washing path outlet 326 and is introduced into the washing tub 500 from the lower flow path 370 .

In the path cleaning, the detergent remaining in the automatic liquid injection device 301 and in the lower part 370 of the channel is reliably washed away, and sent to the washing tub 500. As a result, it is possible to prevent the residual detergent from being mixed with the softening agent that is introduced in the final rinsing process, and to suppress the deposition of foreign matter that occurs when the detergent and the softening agent are mixed. Furthermore, path cleaning can remove foreign matter with a strong stream of water even if foreign matter is present.

In the final rinsing process, the softener three-way valve 382 that is part of the three-way valve 380 is opened, and the path between the softener tank 460 and the pump unit 390 is communicated. The pump unit 390 rotates the motor and moves the piston 395 up and down to suck an appropriate amount of softener from the pump unit inlet 392a and discharge it from the pump unit outlet 392b. The softening agent discharged from the pump unit outlet 392b reaches the flow channel lower portion 370 .

Before or while the piston 395 is driven, the second water conduit 312 is opened and water supply to the second water conduit 322 is started. Like the water flow Y, the water introduced into the second water guiding path 322 passes through the softening agent water inlet 334 and is injected into the manual softening agent introduction portion 430, and then from the outlet of the manual softening agent introduction portion 430. It flows down to the lower part 370 of the flow path, dissolves the softener accumulated in the lower part 370 of the flow path, and is thrown into the washing tub 500 .

Before or while the piston 395 is driven, the second water conduit 312 is opened and water supply to the second water conduit 322 is started.

Next, the softener three-way valve 382 is closed, the path between the softener tank 460 and the pump unit 390 is blocked, and the path from the third water conduit 313 to the liquid agent automatic injection device 301 is communicated. After that, the third water conduit 313 is opened, and the path cleaning for washing out the softener in the three-way valve 380 and the pump unit 390 is performed. This path cleaning prevents the remaining softening agent from mixing with the detergent to be introduced in the next washing operation, and suppresses deposition of foreign matter that occurs when the detergent and the softening agent are mixed. In addition, path cleaning can remove foreign matter with a strong stream of water even if foreign matter is present.

[1-3. action etc.]
As described above, washing machine 100 according to Embodiment 1 includes housing 600 , washing tub 500 , water guide path, detergent tank 450 , and liquid agent automatic injection device 301 . Washing tub 500 is provided inside housing 600 and accommodates laundry. The water guide path supplies water introduced from the water supply valve 310 to the washing tub 500 . Detergent tank 450 stores detergent therein. The liquid agent automatic injection device 301 injects the detergent stored in the detergent tank 450 into the washing tub 500 . The water guide path includes a first water guide path 321 , a second water guide path 322 and a foam generator 376 . The first water supply path 321 supplies water to the washing tub 500 without passing through the liquid agent automatic injection device 301 . The second water supply path 322 supplies water to the washing tub 500 through the liquid agent automatic injection device 301 . The foam generator 376 is arranged below the first water conduit 321 and downstream of the third water conduit 323 in the installed state, and the detergent liquid supplied from the third water conduit 323 stays there. Washing machine 100 also supplies water to foam generator 376 through first water conduit 321 after waiting time t has elapsed after automatic liquid injection device 301 is driven to inject detergent.

As a result, water is injected from the first water guiding path 321 toward the foam generating section 376 after the waiting time t, which is the time for the detergent remaining in the first flow path lower path 372 to reach the foam generating section 376, has passed. The injected water and the detergent remaining in the foam generating section 376 are mixed.

Therefore, the washing machine 100 can efficiently mix the detergent discharged from the automatic liquid injection device 301 with water and supply the detergent liquid generated by the mixture to the washing tub 500 .

As in the present embodiment, when the amount of detergent discharged from the liquid agent automatic injection device 301 is equal to or greater than a predetermined amount, water is supplied to the foam generator 376 through the first water guide path 321 after the standby time t has elapsed. It may be configured to

As a result, even if the amount of detergent to be discharged is large and it takes time to reach the foam generating section 376, the water and the liquid agent can be reliably mixed in the foam generating section 376.

As in the present embodiment, after automatic detergent injection is performed by driving the liquid agent automatic injection device 301 to inject the detergent, the third water conduit 313 is opened while the first water conduit 311 is closed. Water supply may be started to the third water supply path 323 .

Accordingly, after the liquid agent is supplied to the third water conveying path 323 and the first lower flow path 372, water is supplied only to the third water conveying path 323 and the first lower flow path 372.

Therefore, the flow rate of water flowing through the third water guiding path 323 and the first lower flow path 372 can be secured, and the liquid agent remaining in the third water guiding path 323 and the first lower flow path 372 can be sent out to the foam generating section 376.

A plurality of pins 377 that protrude upward may be provided in the bubble generator 376 as in the present embodiment.

As a result, the detergent, water, and detergent liquid that have reached the pin 377 stay near the pin 377 .

Therefore, it is possible to prevent the detergent, water, and detergent liquid that have reached the foam generating section 376 from being washed away immediately, so that the detergent liquid can be supplied to the washing tub 500 over a long period of time.

(Other embodiments)
As described above, Embodiment 1 has been described as an example of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this.

Therefore, other embodiments will be exemplified below.

In Embodiments 1 and 2, washing machine 100, which is a vertical washing machine, has been described as an example of a washing machine. The washing machine is not limited to a vertical washing machine, and may be, for example, a drum washing machine or a two-tub washing machine.

In Embodiment 1, as an example of a configuration in which the water supply unit is driven to supply water to the first water channel and the liquid agent automatic injection device is driven to inject the liquid agent, water is supplied to the first water conduit 321 and the liquid agent is supplied. The operation of driving the automatic injection device 301 to inject the liquid agent has been described. The first water channel is not limited to the first water conduit 321, for example, the second water conduit 322, as long as it supplies water to the washing tub or the outer tub without passing through the liquid agent automatic injection device. good. Further, in Embodiment 1, the operation of injecting the liquid detergent has been described as an example of the configuration in which the liquid agent automatic injection device is driven to inject the liquid agent. The liquid agents are not limited to liquid detergents, and may be, for example, softeners.

In Embodiment 1, as an example of the foam-generating water inlet, the foam-generating water inlet 335 that injects water into the flow path lower part 370 without passing through the detergent case 400 has been described. The foam-generating water inlet is not limited to the foam-generating water inlet 335 because it is sufficient to inject water toward the confluence channel. The foam-generating water inlet may, for example, be configured to inject water into the lower portion of the flow path through the detergent case, or may be configured to serve as a powder detergent water inlet, a liquid detergent water inlet, or a softener water inlet. may

The present disclosure is applicable to washing machines equipped with an automatic liquid injection device. Specifically, the present disclosure is applicable to vertical washing machines, drum washing machines, twin-tub washing machines, and the like.

REFERENCE SIGNS LIST 100 washing machine 200 water supply port 300 water supply unit 301 liquid agent automatic injection device 302 detergent tank insertion port 303 softener tank insertion port 310 water supply valve 311 first water conduit 312 second water conduit 313 third water conduit 314 bus pump 318 washing Path entrance 319 Washing path 320 Water supply unit casing 321 First water conduit (first water path)
322 second water conduit (first channel)
323 third conduit (second channel)
324 Washing path water inlet 325 Automatic injection device internal path 326 Washing path outflow 330 Detergent case flow path 331 Powder detergent water inlet 332 Liquid detergent water inlet 333 Bath pump water inlet 334 Softener water inlet 335 Foam generation Water inlet 340 Flow path lid 350 Detergent case housing 360 Detergent tank housing 360a Detergent automatic injection connection 363 Reservoir 364 Falling port 365 Softener tank housing 365a Softener automatic injection connection 370 Lower flow path (merge waterway)
371 channel lower outlet 372 first channel lower channel 373 second channel lower channel 374 washing channel outlet 375 junction 376 foam generator 376a surrounding rib 376b foam generator outlet 376c foam generator inlet 377 pin 380 three-way valve 381 detergent Three-way valve 382 Softener three-way valve 390 Pump unit 391 In-pump channel 392a Pump unit inlet 392b Pump unit outlet 393 Inlet check valve 394 Outlet check valve 395 Piston 397 Cylinder 400 Detergent case 410 Powder detergent manual input unit 420 Manual liquid detergent Input unit 430 Softener manual input unit 450 Detergent tank (liquid agent tank)
450a Detergent tank remaining amount scale 451 Detergent tank input part 452 Detergent automatic input insertion port 460 Softener tank (liquid agent tank)
460a Softener tank remaining scale 461 Softener tank inlet 462 Softener automatic inlet 500 Washing tub 600 Case 610 Lower case 620 Upper case 621 Inlet 700 Lid 800 Operation unit

Claims

a housing;
A washing tub that is provided inside the housing and accommodates laundry;
a water guide path for supplying water introduced from a water supply valve to the washing tub;
a liquid agent tank for storing the liquid agent inside;
a liquid agent automatic injection device for injecting the liquid agent stored in the liquid agent tank into the washing tub;
with
The water conveyance path is
a first water channel for supplying water to the washing tub without passing through the automatic liquid injection device;
a second water channel for supplying water to the washing tub through the automatic liquid injection device;
a retention portion disposed below the first water channel and downstream of the second water channel in an installed state, in which the detergent liquid supplied from the second water channel stays;
including
A washing machine that supplies water to the retention portion through the first water channel after a predetermined time has elapsed after the liquid agent is injected by driving the liquid agent automatic injection device.
2. The washing machine according to claim 1, wherein when the amount of liquid discharged from said automatic liquid injection device is equal to or greater than a predetermined amount, water is supplied to said retention portion through said first water channel after said predetermined time has elapsed.
After driving the liquid agent automatic injection device to inject the liquid agent,
Starting water supply to the second water channel while not supplying water to the first water channel;
The washing machine according to claim 1 or 2.
The washing machine according to any one of claims 1 to 3, wherein the retaining portion is provided with a plurality of pins projecting upward.