TW202246612A - washing machine - Google Patents

Abstract

A washing machine according to the present disclosure comprises a wash tub for accommodating laundry, a liquid agent loading device that loads a liquid agent into the wash tub, a flow channel through which the liquid agent to be supplied to the wash tub flows, and a water feeder that supplies water to the channel. The flow channel includes a first channel through which washing water flows, a second channel that passes through a liquid agent drop position, a confluent channel where the washing water flowing through the second channel converges with the first channel, and a projecting wall formed to project into the first channel and toward the downstream side of the first channel from near the upstream side of the confluent channel.

Description

washing machine

This disclosure relates to a washing machine.

Patent Document 1 discloses a washing machine equipped with an automatic liquid agent injection device. The washing machine comprises: a casing; a liquid agent tank, which is detachably accommodated in a tank accommodating portion formed in the casing, and stores liquid; and a liquid agent input device, which sucks and discharges the liquid stored in the liquid agent tank . The liquid agent tank can be taken out and put in from the tank accommodating part in the state where the liquid agent tank is accommodated in the tank accommodating part. prior art literature

patent documents Patent Document 1: Japanese Patent Laid-Open No. 2020-171394

The present disclosure provides a washing machine capable of suppressing the stagnation of the flow of washing water in the second flow path and washing away the liquid agent dropped to the second flow path.

The washing machine in this disclosure is equipped with: a washing tank for accommodating laundry; a liquid agent input device for injecting the liquid agent into the washing tank; a liquid agent flowing part for flowing the liquid agent supplied to the washing tank; and a water supply part for supplying water to the washing tank. to flow path. The flow path part includes: a first flow path for washing water to flow; a second flow path for passing the drop position of the liquid agent; a confluence part for converging the wash water flowing in the second flow path to the first flow path; and a protruding wall , protruding toward the first flow path from the vicinity of the upstream side of the confluence portion toward the downstream side of the first flow path.

The washing machine in the present disclosure can suppress the stagnation of the flow of washing water in the second flow path, and can wash away the liquid agent dropped to the second flow path.

form for carrying out the invention Hereinafter, embodiments will be described in detail with reference to the drawings. However, detailed explanations beyond necessity are sometimes omitted. For example, detailed descriptions of well-known items or repeated descriptions of substantially the same configurations may be omitted.

In addition, the attached drawings and the following descriptions are provided to allow those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims. (Embodiment 1)

Hereinafter, washing machine 100 in Embodiment 1, which is an example of the washing machine in the present disclosure, will be described with reference to FIGS. 1 to 20 . [1-1. Composition] [1-1-1. Configuration of washing machine]

1 and 2 are perspective views showing the configuration of a washing machine 100 according to Embodiment 1. FIG. 1 shows a closed state of a lid 700, and FIG. 2 shows a state of an opened lid 700. As shown in FIG. In addition, in Embodiment 1, the vertical direction in the state (corresponding to the installation state in this disclosure) in which the washing machine 100 is installed as shown in FIG. 1 and FIG. 2 may be described as an up-down direction. In addition, in Embodiment 1, the side where the operation part 800 of the washing machine 100 in FIG. 1 and FIG. 2 is present may be described as the back side, and the opposite side may be described as the front side. That is, the user generally puts laundry such as clothes into the washing machine 100 while standing in front of the washing machine 100 , and performs various operations for operating the washing machine 100 . In addition, the laundry in the present disclosure is not limited to clothes, but refers to cloth or leather products such as bedding, curtains, carpets, shoes, etc. 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 cover 700 , and an operation unit 800 . The housing 600 includes a lower housing 610 and an upper housing 620 . The washing tank 500 is accommodated in the lower case 610 . The washing tank 500 is formed as a cylindrical body with an upper opening, and can accommodate laundry to perform a washing operation for washing the laundry. The washing operation may be performed by known washing tanks of various washing machines. The principle of this embodiment is not limited to the specific cleaning action performed by the washing tank 500 .

The upper case 620 is disposed above the lower case 610 , and the upper case 620 is formed with an input port 621 for laundry communicating with the washing tub 500 . The cover 700 is attached to the rear of the upper case 620 and covers the inlet 621 in a freely openable and closable manner. When the user rotates the cover body 700 upward, the washing tank 500 will be exposed through the insertion opening 621 . A user can insert laundry into washing tub 500 from inlet 621 .

An operation unit 800 is arranged at a rear portion of the upper case 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 . In addition, the washing machine 100 is equipped with a control device not shown in the casing 600, and in response to the user's operation of the operation part 800, in addition to the control of the water supply valve 310, the detergent three-way valve 381, or the softener three-way valve 382, for example, , and also controls the overall operation of the washing machine 100. The control device has a computer system with a processor and a memory. And, by making the processor execute the program stored in the memory, the computer system functions as a control device. Although the program executed by the processor is pre-recorded in the memory of the computer system, it may be recorded on a non-temporary recording medium such as a memory card or provided through a telecommunication line such as the Internet. .

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.

3 is an external perspective view showing the configuration of the water supply unit 300 and its surroundings, and the state where the lotion box 400, the lotion tank 450, and the softener tank 460 have been pulled out. 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. FIG. 6 is a plan view showing the structure of the water supply unit 300 and its surroundings, excluding the flow path cover 340 . As shown in FIG. 3 , the lotion tank 450 and the softener tank 460 are configured to store the agent, and the amount of the agent is such that multiple operations can be performed. Specifically, a liquid lotion is stored in the lotion tank 450 , and a softener is stored in the softener tank 460 . The detergent tank 450 and the softener tank 460 are formed with a detergent tank input part 451 and a softener tank input part 461 whose upper surfaces are opened so that a liquid agent can be injected. On the other hand, the detergent cartridge 400 is used to allow the user to inject a dose required for one operation. The detergent box 400 is provided with a powder detergent manual input part 410 , a liquid detergent manual input part 420 and a softener manual input part 430 , so that powder detergent, liquid detergent and softener can be injected respectively. [1-1-2. Water supply unit]

As shown in FIG. 5, the water supply unit 300 is mainly composed of a water supply unit housing portion 320, a flow path cover portion 340, and a flow path lower portion 370. The water supply unit casing portion 320 is formed in a substantially box shape. The part 340 covers the upper surface of the housing part of the water supply unit, and the lower flow path part 370 is attached to the lower bottom of the housing part of the water supply unit.

As shown in FIG. 3 and FIG. 4 , a water supply valve 310 is attached to the left side of the water supply unit casing 320 as viewed from the back. The water supply valve 310 allows water introduced from the water supply port 200 to pass through freely. In the state where the water supply valve 310 is opened, the water introduced from the water supply valve 310 is introduced into the water supply unit case part 320 .

A tank pump 314 is disposed at the center of the back surface of the water supply unit case 320 , and the tank pump 314 sucks water from the outside of the washing machine 100 through a hose (not shown). The tank pump 314 is fixed to the flow path cover 340 by screwing, and is directly connected to the first water guide path 321 (see FIG. 8 ) described later through the tank pump water inlet 333 . The tank pump 314 can start suction and discharge operations by supplying water from the first water guide path 321 .

As shown in FIGS. 5 and 6 , the water supply unit case portion 320 is formed in a substantially box-like shape that opens forward. The water supply unit housing portion 320 includes a detergent tank accommodating portion 360 , a softener tank accommodating portion 365 , and a detergent box accommodating portion 350 as an internal space. The lotion tank accommodating part 360 accommodates the lotion tank 450 so that it can be pulled out independently, the softener tank accommodating part 365 accommodates the softener tank 460 so that it can be pulled out independently, and the lotion box accommodating part 350 stores the lotion The case 400 is accommodated so that it can be pulled out independently.

The detergent box flow path part 330 is arranged as the upper surface of the detergent box accommodating part 350, and the first water guide path 321 and the second water guide path 322 (refer to FIG. ).

As shown in FIGS. 3 and 4 , a liquid agent injection device is provided in the water supply unit housing portion 320 . The liquid agent input device includes: a lotion tank 450 , a softener tank 460 and an automatic liquid agent input device 301 . Viewed from the back of the housing part 320 of the water supply unit, the liquid medicine automatic injection device 301 is installed on the right part. The details of the liquid agent automatic injection device 301 will be described later. [1-1-3. Water guide path]

As shown in FIGS. 4 and 5 , the water supply valve 310 includes three on-off valves of a first water guide cylinder 311 , a second water guide cylinder 312 and a third water guide cylinder 313 , and is configured to be able to independently open and close each of the on-off valves.

7 shows the structure of the water supply unit 300 and its surroundings, and is used to illustrate the state where the flow path cover 340 has been removed in the state where the detergent box 400, the detergent tank 450, and the softener tank 460 have been detached. Sectional top view. FIG. 8 is a sectional view taken along line F-F of FIG. 7 . 9 is a plan view showing the configuration of the water supply unit 300 and its surroundings, with the detergent box 400, the detergent tank 450, and the softener tank 460 pulled out, with the flow path cover 340 removed. Fig. 10 is a B-B sectional view of Fig. 7 . As shown in FIGS. 6 to 10 , a water guide path through which water introduced from the water supply valve 310 flows is formed on the water supply unit housing portion 320 , and the water supply valve 310 is directly connected to the water guide path. The water guiding path is branched so as to communicate independently with the first water guiding cylinder 311 , the second water guiding cylinder 312 and the third water guiding cylinder 313 . The flow path communicating with the first water guiding cylinder 311 is defined as the first water guiding path 321, the flow path communicating with the second water guiding cylinder 312 is defined as the second water guiding path 322, and the flow path communicating with the third water guiding cylinder 313 is defined as It is the third water guiding path 323 . [1-1-4. Lotion box, first water guide path, second water guide path]

As shown in Fig. 3 and Fig. 6 to Fig. 9, the first water guiding path 321 and the second water guiding path 322 are configured to guide the water supplied from the first water guiding cylinder 311 and the second water guiding cylinder 312 to the flow path of the lotion box. 330, to fill the lotion box 400 located below.

Inside the lotion box 400, a powder detergent manual input unit 410, a liquid detergent manual input unit 420, and a softener manual input unit 430 are provided, and are configured so that a user can inject various agents.

As shown in Figures 6 and 9, the first water guide path 321 is provided with a water injection port 331 for powder lotion and a water injection port 332 for liquid lotion. The top of 410 is formed to connect up and down, and the liquid lotion injection port 332 is formed to connect up and down above the liquid lotion manual input part 420 . The second water guide path 322 is provided with a water injection port 334 for softener. The water injection port 334 for softener is formed to connect up and down above the manual softener input part 430 .

The powder detergent manual input part 410, the liquid detergent manual input part 420 and the softener manual input part 430 are respectively provided with outlets (not shown), and the aforementioned outlets discharge the washing water accumulated inside to the lower part. Hereinafter, in the present embodiment, the washing water discharged from the discharge port falls toward the flow path lower portion 370 .

The first water guide path 321 is provided with a water injection port 335 for foam generation. The water injection port 335 for foam generation is arranged behind the detergent box 400 housed in the detergent box accommodating portion 350 . Thereby, the water injected downward from the foam generating water injection port 335 does not pass through the detergent box accommodating portion 350 , but falls to the flow path lower portion 370 . [1-1-5. Automatic input device, third water guide path]

Fig. 11 is a sectional view along line E-E of Fig. 7 . Fig. 12 is a C-C sectional view of Fig. 7 . Fig. 13 is an A-A sectional view of Fig. 7 . Fig. 14 is a D-D sectional view of Fig. 7 . Fig. 15 is an external front view showing the configuration of the water supply unit 300 and its surroundings, with the detergent box 400, the detergent tank 450, and the softener tank 460 detached. As shown in FIGS. 6 and 10 to 15 , the third water guide path 323 is formed along the rear surface of the water supply unit case 320 covering a substantially horizontal direction, and opens on the back side of the water guide port 324 of the washing path. The water guiding port 324 of the cleaning path is connected to the inner path 325 of the automatic injection device described later, so that the third water guiding path 323 communicates with the automatic liquid injection device 301 . The liquid agent automatic injection device 301 is arranged on the back side of the lotion tank accommodating part 360 and the softener tank accommodating part 365 . The liquid agent automatic injection device 301 is connected to the lotion tank 450 and the softener tank 460 respectively accommodated in the lotion tank accommodating part 360 and the softener tank accommodating part 365 as described later.

FIG. 16A is a plan view showing a configuration of water supply unit 300 and its surroundings, and illustrating a cross section in which detergent tank 450 is housed, excluding flow path cover 340 . FIG. 16B is a plan view showing the configuration of water supply unit 300 and its surroundings, and illustrating a cross section in which detergent tank 450 is pulled out and flow path cover 340 is excluded. Fig. 17 is a H-H sectional view of Fig. 16A. Fig. 18 is a J-J sectional view of Fig. 16B.

As shown in FIGS. 9 and 17 , a detergent tank insertion port 302 is provided on the back side of the detergent tank 450 , and a detergent tank check box opened by being pushed in is provided inside the detergent tank insertion port 302 . Valve 302a. Similarly, on the back side of the softener tank 460, a softener tank insertion port 303 and a softener tank check valve opened by being pushed in are provided. The lotion tank 450 is configured so that when it is installed in the lotion tank accommodating part 360, the automatic lotion injection inlet 452 described later is inserted into the lotion tank insertion port 302, and the lotion tank check valve 302a is opened and Liquid lotion available. Similarly, when the softener tank 460 is installed in the softener tank accommodating portion 365, the softener automatic injection port 462 described later will be inserted into the softener tank insertion port 303, and the softener tank check valve will Open to supply softener.

As shown in FIG. 5 and FIG. 9 , a connecting portion 360 a for automatic injection of detergent and a connecting portion 365 a for automatic injection of softener are respectively provided on the inner back of the lotion tank accommodating portion 360 and the softener tank accommodating portion 365 . The connection part 360a for automatic detergent injection and the connection part 365a for automatic softener injection are configured to surround the automatic detergent injection inlet 452 and the automatic softener injection inlet 462 of the automatic liquid agent injection device 301 .

The liquid agent automatic injection device 301 includes: a lotion automatic injection insertion port 452 , a softener automatic injection insertion port 462 , a three-way valve 380 , a pump unit 390 and an inner path 325 of the automatic injection device. The three-way valve 380 switches the paths of liquid lotion, softener and water. The pump unit 390 sucks and discharges the liquid medicine. The path 325 in the automatic feeding device connects the three-way valve 380 and the pump unit 390 .

The insertion port 452 for the automatic injection of the detergent and the insertion port 462 for the automatic insertion of the softener are protruding forward and are formed in the detergent tank 450 and the softener tank 460 respectively in the lotion tank accommodating part 360 and the softener tank container. In the state of setting part 365, it is respectively connected to lotion tank 450 and softener tank 460.

The three-way valve 380 includes a detergent three-way valve 381 and a softener three-way valve 382 configured to be independently openable and closed. The detergent three-way valve 381 is configured to communicate with the water guide port 324 of the washing path, the detergent automatic injection port 452 , and the softener three-way valve 382 . The softener three-way valve 382 is configured to communicate with the lotion three-way valve 381 , the softener automatic input insertion port 462 , and the inner path 325 of the automatic input device. As shown in FIG. 13 , the downstream side of the three-way valve 380 is connected to the pump unit 390 through the inner path 325 of the automatic feeding device. In this way, the three-way valve 380 is connected to the inner path 325 of the automatic injection device, the automatic lotion injection inlet 452 , the softener automatic injection inlet 462 , and the pump unit 390 . The flow of lotion, softener and water is controlled by switching the opening and closing of at least one of the three-way valve for lotion 381 and the three-way softener 382 .

The pump unit 390 includes: a flow path 391 in the pump, a cylinder 397 and a piston 395 . The in-pump flow path 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 flow path 391 in the pump. The piston 395 moves up and down by the rotational driving force of the motor 396 .

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 be opened by the negative pressure action of the piston 395 , and the outlet check valve 394 is configured to be opened by the positive pressure action of the piston 395 .

The path 325 in the automatic feeding device is connected to the flow path lower part 370 through the cleaning path outlet 326 downstream of the pump unit 390 . [1-1-6. Tank housing part]

As shown in FIG. 5 , the upper surface of the detergent tank accommodating portion 360 is constituted by the flow path cover portion 340 . The flow path cover part 340 functions as a cover, covers the upper part of the detergent tank input part 451 , and suppresses the mixing of foreign matter from the detergent tank input part 451 .

As shown in FIGS. 17 and 18 , a detergent storage portion 363 and a detergent drop port 364 communicating with the flow path lower portion 370 are formed on the bottom surface of the detergent tank accommodating portion 360 . Like the detergent tank accommodating part 360 , a softener storage part (not shown) and a softener dropping port (not shown) are formed on the bottom surface of the softener tank accommodating part 365 . Hereinafter, since the softener storage part and the softener drop port have the same configuration as the lotion storage part 363 and the lotion drop port 364, description is omitted.

Lotion drop port 364 is arranged at a position below lotion tank insertion port 302 and lotion automatic injection port 452 when lotion tank 450 is housed in lotion tank accommodating portion 360 . In addition, a detergent storage portion 363 is provided on the inner bottom surface of the detergent tank accommodating portion 360 . Lotion storage portion 363 is a depression capable of storing a liquid agent, and is configured as a gap separating the bottom surface of lotion tank 450 from the inner bottom surface of lotion tank accommodating portion 360 . When the user pulls out the lotion tank 450 , the lotion tank insertion port 302 will be pulled out from the lotion automatic input insertion port 452 . At this time, the lotion remaining in the automatic lotion injection insertion port 452 passes through the lotion storage portion 363 and the lotion drop port 364 , and drops to the flow path lower portion 370 . Thereby, it is possible to prevent the lotion leaked from the lotion automatic injection opening 452 from adhering to the lotion tank accommodating portion 360 and making it dirty. [1-1-7. Flow path lower part]

FIG. 19 is a plan view of the flow path lower portion 370 . FIG. 20 is a schematic diagram showing the structures around the first flow path lower path 372 and the cleaning path 375 . As shown in FIGS. 17 to 20 , the lower flow path 370 includes a first lower flow path 372 , a cleaning path 375 , a second lower flow path 373 , and a lower flow outlet 371 . The first flow path lower path 372 communicates with the washing path outlet 326 . The washing path 375 washes away the liquid agent dropped from the detergent drop port 364 and the softener drop port. The second flow path lower path 373 passes the wash water discharged from the detergent box 400 .

As shown in FIG. 20 , the inlet wall 911 , the outlet wall 912 , the flow divider wall 930 , and the protruding wall 960 are formed to extend vertically upward from the inner bottom surface of the flow path lower portion 370 . The end of the inlet wall 911 is separated from the end of the first dividing wall 931 of the dividing wall 930 . The separation between the inlet wall 911 and the first divider wall 931 is used as the washing path inlet 950 for the washing water flowing in the lower path 372 of the first flow path to flow into the washing path 375 . The channel cross-sectional area of the cleaning channel inlet 950 is smaller than that of the first channel lower channel 372 . The cleaning path inlet 950 is provided upstream from the dropping position P of the softener dropped from the softener dropping port and the dropping position Q of the liquid lotion dropped from the lotion dropping port 364 .

Divider wall 930 is arranged to be parallel to the flow of washing water passing through first flow lower path 372 , and partitions first flow lower path 372 and washing path 375 . The dividing wall 930 is arranged so that the drop position P of the softener and the drop position Q of the liquid lotion are located on the cleaning path 375 .

The divider wall 930 includes a first divider wall 931 , a second divider wall 932 and a third divider wall 933 . The second flow divider wall 932 is arranged on the downstream side of the first flow divider wall 931 and is separated from the end of the first flow divider wall 931 . The separation of the first flow dividing wall 931 and the second flow dividing wall 932 is defined as a first confluence port 941 . The third flow divider wall 933 is arranged on the downstream side of the second flow divider wall 932 and is separated from the end of the second flow divider wall 932 . The separation between the second flow dividing wall 932 and the third flow dividing wall 933 is defined as the second confluence port 942 .

The drop position P of the softening agent is located on the upstream side of the first confluence port 941 and the second confluence port 942 . The drop position Q of the liquid lotion is located near the first confluence port 941 and is located on the upstream side of the second confluence port 942 .

A first protruding wall 961 is integrally formed at a downstream end portion of the first flow dividing wall 931 . The first protruding wall 961 is provided to protrude toward the first flow path lower path 372 from the upstream side of the first confluence port 941 toward the downstream side of the first flow path lower path 372 . A second protruding wall 962 is integrally formed at the downstream end portion of the second flow dividing wall 932 . The second protruding wall 962 is provided to protrude toward the first flow path lower path 372 from the upstream side of the second confluence port 942 toward the downstream side of the first flow path lower path 372 . Hereinafter, in this embodiment, the first protruding wall 961 and the second protruding wall 962 are defined as the protruding wall 960 .

An outlet wall 912 is provided on the downstream side of the washing path 375 and on the upstream side of the drop position of the water injected from the foam generating water injection port 335 . The outlet wall 912 is formed to extend vertically upward from the inner bottom surface of the flow path lower portion 370 . The outlet wall 912 is arranged on the downstream side of the third flow dividing wall 933 , and is provided so as to be separated from the end of the third flow dividing wall 933 . The outlet wall 912 is provided vertically with respect to the first flow path lower path 372 , and suppresses the water poured from the foam generating water injection port 335 from flowing into the washing path 375 . The separation between the third flow dividing wall 933 and the outlet wall 912 is the terminal of the cleaning path 375 , and is defined as the cleaning path outlet 945 . The washing path outlet 945 is provided on the downstream side of the drop position P of the softener and the drop position Q of the liquid lotion. Hereinafter, in this embodiment, the first confluent port 941 , the second confluent port 942 , and the outlet 945 of the cleaning path are defined as a confluent portion 940 .

As shown in FIG. 19 , a plurality of pins 377 protruding vertically upward are provided on the downstream side of the first flow path lower path 372 . The pin 377 is provided below the water injection port 335 for foam generation. That is, the pin 377 is arranged at a position where the wash water passing through the first flow path lower path 372 collides with the water injected from the foam generating water injection port 335 . Foam is generated by the impact of washing water and water.

The first flow path lower path 372 merges with the second flow path lower path 373 at the path confluence portion 374 . Flow path lower discharge port 371 is provided downstream of path confluence portion 374 and is formed to open downward so that washing water falls into washing tub 500 . [1-2. Action]

The operation of the washing machine 100 configured as above will be described below. [1-2-1. Flow of water during washing operation when the automatic input function is used]

In Fig. 6, Fig. 8, Fig. 10 ~ Fig. 15 and Fig. 19, the flow of water supplied from the first water guiding cylinder 311 is defined as X, the flow of water supplied from the second water guiding cylinder 312 is defined as Y, and The flow of water supplied from the third water guide cylinder 313 is defined as Z.

Before starting the washing operation, the liquid agent automatic injection device 301 is driven to perform automatic liquid agent injection. First, when the third water guiding cylinder 313 is closed, a part of the three-way valve 380 , that is, the lotion three-way valve 381 is opened to connect the path of the lotion tank 450 and the pump unit 390 . The pump unit 390 rotates the motor 396 and moves the piston 395 up and down to suck an appropriate amount of liquid lotion from the pump unit inlet 392a and discharge it from the pump unit outlet 392b. The discharged lotion reaches the flow path lower part 370 .

Before, during or after the piston 395 is driven, the first water guide cylinder 311 is opened to start water supply to the first water guide path 321 . As shown by the flow X of water, the water introduced into the first water guiding path 321 passes through the water injection port 331 for the powder lotion, the water injection port 332 for the liquid lotion, the water injection port 333 for the tank pump, and the water injection port 335 for foam generation, and is filled to the powder wash. Agent manual input part 410, liquid lotion manual input part 420, tank pump 314 and pin 377. The water poured into the powder detergent manual input part 410 and the liquid detergent manual input part 420 flows down toward the flow path lower part 370 through the discharge port, and the liquid detergent in the flow path lower part 370 is dissolved and put into the washing tank 500 . The water supply to the first water guide path 321 is continued until the path cleaning described later starts. Thereby, since the water supply to the washing tub 500 can be performed while the detergent is automatically injected, the time required for the water supply operation in the initial stage of the washing step can be shortened.

The suction and discharge of the liquid agent by the pump unit 390 are performed intermittently. While the driving of the piston 395 is stopped, the detergent delivery operation is performed.

When the lotion sending action starts, the lotion three-way valve 381 is closed, the path between the lotion tank 450 and the pump unit 390 is blocked, and the path from the third water guide cylinder 313 to the automatic liquid agent injection device 301 is connected. Next, the third water guiding cylinder 313 of the water supply valve 310 is opened. As shown by the water flow Z, the water introduced from the third water guiding cylinder 313 passes through the third water guiding path 323 , and passes through the water guiding port 324 of the washing path to the inner path 325 of the automatic feeding device, and then passes through the pump inner flow path 391 . In this way, during the detergent sending 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 sent to the lower flow path 370 .

The driving of the piston 395 and the detergent delivery operation are carried out alternately. Thereby, the washing machine 100 can generate a lotion solution that has been diluted at a dilution concentration within a predetermined range in the flow path lower portion 370 .

The lotion liquid passing through the flow path 391 in the pump flows into the lower path 372 of the first flow path through the outlet 326 of the cleaning path. The action of the lotion liquid flowing into the lower first flow path 372 in the lower first flow path 372 and the cleaning path 375 will be described in detail later. The wash water passing through the first flow path lower path 372 and the washing path 375 reaches the pin 377 on the downstream side of the outlet wall 912 . The pin 377 stagnates the flow of wash water and spreads the flow.

While the piston 395 is being driven and the detergent is being delivered, the water supply from the first water guide cylinder 311 is continued, and water is poured from the foam generating water inlet 335 toward the pin 377 of the foam generating unit 376 . The injected water collides with the lotion solution around the pin 377 to generate lotion foam. The generated detergent foam and detergent liquid merge with the second flow path lower path 373 at the path confluence portion 374 , and are poured into the washing tub 500 from the flow path lower discharge port 371 .

The driving of the piston 395 and the detergent delivery operation are carried out alternately. Thereby, the washing machine 100 can continuously reach the pin 377 with the lotion liquid that has been diluted at a dilution concentration within a predetermined range. Thereby, since the detergent liquid and the detergent foam are poured into the washing tub 500 over a long period of time, the detergent liquid and the detergent foam can be supplied to the clothes without any omission. In addition, since the lower portion 370 of the flow path in this embodiment injects the lotion liquid produced by diluting the liquid lotion into the washing tub 500, it is possible to prevent the stock solution of the liquid lotion from adhering to the clothes accommodated in the washing tub 500. Therefore, it is possible to suppress damage to clothing due to the attachment of the stock solution of the liquid lotion.

After the driving of the piston 395 and the detergent sending action have been performed a predetermined number of times, the separate water supply by the first water guiding cylinder 311 is implemented. Close the lotion three-way valve 381, and close the third water guiding cylinder 313. The water introduced into the first water guiding path 321 flows down toward the flow path lower portion 370 through the outlet of the detergent box 400 , and is poured into the washing tub 500 . When the scheduled water supply ends, the first water guiding cylinder 311 is closed. In addition, in this embodiment, as described later, after opening the third water guide tube 313, the first water guide tube 311 is closed.

Next, implement path scrubbing. During the path cleaning, the third water guide cylinder 313 alone supplies water. Accordingly, the water introduced from the water supply valve 310 is not divided into the first water guiding path 321 and the third water guiding path 323 , but is only supplied to the third water guiding path 323 . Therefore, the amount of water passing through the third water guiding path 323 during the path cleaning is larger than the amount of water passing through the third water guiding path 323 during the detergent sending operation. The water passing through the path 325 in the automatic feeding device permeates the outlet 326 of the washing path and flows down toward the lower portion 370 of the flow path, and is thrown into the washing tank 500 from the lower portion 370 of the flow path.

The cleaning of the path reliably removes the detergent remaining in the liquid agent automatic injection device 301 and the lower portion 370 of the flow path, and sends it out to the washing tank 500 . Thereby, it is possible to prevent the remaining lotion from mixing with the softening agent put into the final washing step, and to suppress the precipitation of foreign matter generated when the lotion and the softening agent are mixed. In addition, path cleaning can remove foreign matter with strong water flow even when foreign matter is present.

In the final cleaning step, softener three-way valve 382 , which is a part of three-way valve 380 , is opened to communicate the path between softener tank 460 and pump unit 390 . The pump unit 390 rotates the motor 396, moves the piston 395 up and down, sucks an appropriate amount of softener from the pump unit inlet 392a, and discharges it from the pump unit outlet 392b. The softener discharged from the pump unit outlet 392b reaches the flow path lower portion 370 .

Before or during the driving of the piston 395 , the second water guiding cylinder 312 is opened to start water supply to the second water guiding path 322 . As shown in the flow Y of water, the water introduced into the second water guide path 322 is poured into the softener manual input part 430 through the softener water injection port 334, and flows down from the discharge port of the softener manual input part 430 toward the flow path lower part 370, The softener accumulated in the flow path lower part 370 is dissolved and thrown into the washing tank 500 .

Next, close the softener three-way valve 382 , block the path between the softener tank 460 and the pump unit 390 , and connect the path from the third water guide cylinder 313 to the liquid agent automatic injection device 301 . Thereafter, the third water guide cylinder 313 is opened, and the path cleaning for washing away the softening agent in the three-way valve 380 and the pump unit 390 is performed. Cleaning through this path prevents the residual softener from mixing with the detergent to be put into the next washing operation, and suppresses the deposition of foreign matter that occurs when the detergent and softener are mixed. Also, even if there are foreign substances, the path cleaning can remove foreign substances with strong water flow. [1-2-2. Operation of water in the lower path of the first flow path and the water in the washing path]

A detergent drop port 364 and a softener drop port are arranged above the washing path 375 . When the lotion tank 450 and the softener tank 460 are installed, disassembled or installed, there will be liquid from the lotion tank insertion port 302, the lotion automatic input insertion port 452, the softener tank insertion 303 and the softener. When the insertion port 462 leaks out automatically. At this time, the leaked liquid agent drops onto the cleaning path 375 from the detergent drop port 364 and the softener drop port.

When the third water guide cylinder 313 is opened and water is supplied to the liquid agent automatic injection device 301 , the washing water passes through the washing path outlet 326 and flows into the first flow path lower path 372 . A part of the washing water flowing into the first channel lower path 372 flows into the washing path 375 from the washing path inlet 950 . The flow channel cross-sectional area of the cleaning channel inlet 950 is configured to be smaller than the flow channel cross-sectional area of the first flow channel lower channel 372 . Thereby, the amount of washing water flowing into washing path 375 becomes smaller than the amount of washing water flowing in first flow path lower path 372 . Therefore, the washing water flowing in the washing path 375 can be prevented from overflowing upward from the detergent drop port 364 and the softener drop port and entering into the detergent tank accommodating portion 360 and the softener tank accommodating portion 365 .

The washing water flowing into the washing path 375 from the washing path inlet 950 washes away the liquid agent dropped from the detergent dropping port 364 onto the washing path 375 . The washing water that washes away the dropped liquid agent flows out from the washing path 375 in the confluence part 940 and is confluent in the first flow path lower path 372 .

The amount of washing water flowing through washing path 375 is smaller than the amount of washing water flowing through first flow path lower path 372 . Since the outlet wall 912 is vertically formed on the first flow lower path 372 , the washing path outlet 945 is disposed so as to confluence substantially vertically with respect to the water flowing in the first flow lower path 372 . Therefore, at the washing path outlet 945 , the washing water flowing in the washing path 375 with a small flow rate is prevented from converging into the first flow path lower path 372 due to the washing water flowing in the first flow path lower path 372 at a large flow rate. Thereby, a part of the washing water flowing in the washing path 375 may stagnate in the vicinity of the washing path outlet 945 .

The first protruding wall 961 is arranged to cover the upstream side of the first confluence port 941, and is provided from the downstream side end of the first flow dividing wall 931 toward the downstream side of the first flow path lower path 372, toward the first flow path lower path 372. protruding obliquely. Thus, the first protruding wall 961 does not block the flow of the washing water flowing in the lower first flow path 372 , and the flow can be introduced from the washing path 375 to the lower first flow path 372 through the first confluence port 941 . Therefore, the washing water flowing in the washing path 375 can easily flow out from the first confluent port 941 .

Like the first protruding wall 961 , the second protruding wall 962 provided upstream of the second confluence port 942 can introduce the flow from the cleaning path 375 to the first flow path lower path 372 through the second confluence port 942 .

The washing water flowing in the washing path 375 flows out from the first confluence port 941 and the second converging port 942 to the lower path 372 of the first flow path, and the amount of washing water flowing in the washing path 375 gradually decreases. Therefore, the amount of washing water reaching the washing path outlet 945 located at the end of the washing path 375 is reduced, and the flow of washing water can be suppressed from stagnating at the washing path outlet 945 . [1-3. Effect]

As described above, in the present embodiment, the washing machine 100 is provided with: a washing tub 500 for accommodating laundry; The liquid agent flows; and the water supply valve 310 supplies water to the flow path lower part 370 . The lower flow path 370 includes: the first lower flow path path 372 for water supply flow; the washing path 375 passing through the dropping position P of the softener and the dropping point Q of the liquid lotion; the confluence part 940 ; and the protruding wall 960 . The confluence part 940 allows the washing water flowing in the washing path 375 to converge in the lower path 372 of the first flow path. The protruding wall 960 is formed to protrude toward the first flow path lower path 372 from the upstream side of the first flow path 941 and the upstream side of the second flow path 942 toward the downstream side of the first flow path lower path 372 . In addition, the flow path lower part 370 is an example of the flow path part in this disclosure, and the 1st flow path lower part path 372 is an example of the 1st flow path in this disclosure. The cleaning path 375 is an example of the second flow path in this disclosure, and the softener and liquid lotion are examples of liquid agents in this disclosure.

Thereby, the protruding wall 960 guides the flow from the washing path 375 to the lower portion of the first flow path 372 , so that the washing water flowing in the washing path 375 can easily flow out from the confluence part 940 .

Therefore, it is possible to suppress the stagnation of the flow of washing water in the washing path 375 and to wash away the liquid agent dropped to the washing path 375 .

Like this embodiment, the confluence part 940 includes: a first confluence port 941 , a second confluence port 942 , and a cleaning path outlet 945 . The cleaning path outlet 945 is provided on the downstream side of the first confluent port 941 and the second confluent port 942 . The first protruding wall 961 and the second protruding wall 962 may protrude toward the first flow path lower path 372 from the vicinity of the upstream side of the first confluence port 941 and the second confluence port 942 toward the downstream side of the first flow path lower path 372 . . In addition, the first confluence port 941 and the second confluence port 942 are examples of the first confluence part in the present disclosure, and the cleaning path outlet 945 is an example of the second confluence part in the present disclosure.

Thereby, in the first confluence port 941 and the second confluence port 942, the washing water can be made to flow from the washing path 375 to the first flow path lower path 372, and can flow to the second confluence port of the washing path 375. 942 The amount of washing water on the further downstream side decreases.

Therefore, the amount of washing water flowing through washing path 375 can be gradually reduced, so that the flow of washing water can be effectively suppressed from stagnating at washing path outlet 945 of washing path 375 .

As in this embodiment, the flow path lower part 370 can also be equipped with: the first confluence port 941, the second confluence port 942 and the outlet of the cleaning path 945, and the second confluence port 942 and the outlet of the cleaning path 945 can also be arranged on the side of the softener. The drop position P and the drop position Q of the liquid lotion are further downstream.

Thereby, the liquid agent dropped to the cleaning path 375 can be washed away before being merged into the first flow path lower path 372 by the confluence part 940 .

Therefore, it is possible to reduce the amount of washing water for washing away the liquid agent dropped into the washing path 375 .

As in this embodiment, the flow path lower portion 370 may also have: a flow divider wall 930, between the first flow path lower path 372 and the cleaning path 375, separating the first flow path lower path 372 from the cleaning path 375, and the cleaning path 375 It may also be arranged parallel to the first flow path lower path 372 , and the cleaning path 375 may branch off from the first flow path lower path 372 .

Thereby, the first flow path lower path 372 and the cleaning path 375 can be divided by the dividing wall 930 , and the liquid agent dropped to the cleaning path 375 can be washed away by the washing water flowing in from the first flow path lower path 372 .

Therefore, the configuration of the flow path lower portion 370 can be simplified.

Like this embodiment, the washing machine 100 includes a detergent tank accommodating portion 360 for accommodating a detergent tank 450 storing a liquid detergent. The liquid agent input device includes: a lotion tank 450 ; and a liquid agent automatic input device 301 , which is connected to the lotion tank 450 and supplies the liquid agent stored in the lotion tank 450 to the washing tank 500 . The drop position Q of the liquid lotion may also be located below the lotion drop opening 364 formed on the inner bottom surface of the lotion tank accommodating portion 360 . In addition, the detergent dropping port 364 is an example of the opening in this indication.

Accordingly, the liquid lotion leaked from the lotion tank 450 into the lotion tank accommodating portion 360 falls from the lotion drop port 364 to the drop position Q of the cleaning path 375 .

Therefore, the liquid agent leaked into the detergent tank accommodating part 360 can be washed away in the washing path 375 .

Like this embodiment, the washing machine 100 includes a detergent tank accommodating portion 360 for accommodating a detergent tank 450 storing a liquid detergent. The liquid agent input device includes: a lotion tank 450 ; and a liquid agent automatic input device 301 , which is connected to the lotion tank 450 and supplies the liquid agent stored in the lotion tank 450 to the washing tank 500 . The lotion tank 450 can also be connected to the liquid automatic injection device 301 through the automatic lotion injection opening 452 , and the drop position Q of the liquid lotion can also be located below the automatic lotion injection insertion opening 452 . In addition, the automatic lotion injection insertion port 452 and the softener automatic injection insertion port 462 are examples of connection parts in this disclosure.

Thereby, the liquid agent leaked from the automatic detergent injection insertion port 452 drops to the drop position Q of the cleaning path 375 .

Therefore, the liquid agent leaked from the automatic liquid injection insertion port 452 can be washed away in the washing path 375 .

As in this embodiment, the lotion tank 450 can also be connected to the liquid automatic injection device 301 through the automatic lotion injection opening 452 , and the lotion dropping port 364 can also be arranged below the automatic lotion injection insertion opening 452 .

Accordingly, the liquid agent leaked from the detergent tank 450 or the automatic detergent injection opening 452 into the detergent tank accommodating portion 360 will drop from the detergent drop port 364 to the drop position Q of the cleaning path 375 .

Therefore, the solution leaked from the lotion tank 450 or the lotion automatic injection port 452 can be washed away in the cleaning path 375 . (Other implementation forms)

As described above, Embodiments 1 and 2 have been described as examples of techniques in the present disclosure. However, the technology in the present disclosure is not limited thereto, and can be applied to embodiments in which changes, substitutions, additions, omissions, etc. have been made. Moreover, it is also possible to create a new embodiment by combining the constituent elements described in the first and second embodiments above.

Therefore, other embodiments will be illustrated below.

In Embodiment 1, the washing machine 100 which is an upright type washing machine was described as an example of the washing machine. The washing machine is not limited to the upright type washing machine as long as it has a liquid agent injection device. For example, the washing machine can be a drum type washing machine, or a double tank type washing machine.

In Embodiment 1, the lotion tank 450, the softener tank 460, and the automatic liquid injection device 301 are described as an example of the liquid agent injection device. The liquid agent in at least one of the agent tanks 460 is supplied to the washing tank 500 . The liquid agent injection device may be at least one of a liquid detergent manual injection unit and a softener manual injection unit as long as it supplies the liquid agent to the washing tub.

In Embodiment 1, the flow path lower part 370 provided in the lower part of the lotion tank accommodating part 360 and the softener tank accommodating part 365 was demonstrated as an example of a flow path part. The flow path portion is not limited to the flow path lower portion 370 as long as it has a first flow path through which water flows and a second path through which dropped liquid medicine is washed away. For example, the flow path can be provided on the inner bottom of at least one of the lotion tank accommodating part and the softener tank accommodating part, and can also be provided on at least one of the liquid lotion manual input part and the softener manual input part. below.

In Embodiment 1, as an example of the confluence part, the confluence part 940 in which the washing water flows from the washing path 375 to the first flow path lower path 372 was described. The confluence part may be any place where the wash water from the second flow path merges into the first flow path. For example, the confluence part may include a cleaning path outlet provided at the end of the second flow path, or may be one.

In Embodiment 1, as an example of the confluence portion, the first confluence port 941 provided on the downstream side of the drop position P of the softener and near the drop position Q of the liquid lotion and the first confluence port 941 provided at the drop position of the softener are described. The second confluent port 942 and the washing path outlet 945 on the downstream side of the drop position Q of P and liquid lotion. Since the confluence part only needs to wash away the liquid agent dropped from the lotion drop port and the softener drop port, and make it flow out from the second flow path to the first flow path, at least one of the confluence parts should be provided in a relatively The dropping position of the softening agent and the dropping position of the liquid lotion may be further downstream. For example, one of the plurality of confluent parts may also be located between the drop position of the liquid lotion and the drop position of the softener.

In Embodiment 1, the protruding wall 960 was described as an example of the protruding wall. The protruding wall 960 includes: the first protruding wall 961 extending from the downstream end of the first flow dividing wall 931; and the second protruding wall 962. Extends from the downstream end of the second flow divider wall 932 . Since the protruding wall only needs to be formed to protrude toward the first flow path from the vicinity of the upstream side of the confluence part toward the downstream side of the first flow path, it is not limited to the protruding wall 960 extending from the downstream end of the flow dividing wall. . For example, the protruding wall may be formed by extending from the middle section of the diversion wall located on the upstream side of the confluence part, or may be provided at the end of the second flow path, that is, on the upstream side of the outlet of the cleaning path. Also, the protruding wall may be integrally formed with the flow dividing wall, or may be formed separately.

Industrial availability This disclosure is applicable to a washing machine equipped with a liquid agent injection device. Specifically, the present disclosure is applicable to upright type washing machines, front-loading type washing machines, double-tub type washing machines, and the like.

100: washing machine 200: water supply port 210: water supply hose 300: water supply unit 301: Liquid agent automatic input device 302: Lotion tank insertion port 302a: Lotion Tank Check Valve 303: Insertion port of softener tank 310: water supply valve 311: The first water guide cylinder 312: The second water guide cylinder 313: The third water guide cylinder 314: tank pump 320: Housing part of water supply unit 321: The first water guide path 322: The second water guiding path 323: The third water guiding path 324: Cleaning path water guide 325: Automatic input device path 326: Cleaning path outlet 330: Lotion box flow path 331: water injection port for powder lotion 332: water injection port for liquid lotion 333: Water injection port for tank pump 334: water injection port for softener 335: water injection port for foam generation 340: Flow path cover 350: Lotion box accommodating part 360: Lotion tank container 360a: Connection part for automatic injection of detergent 363: lotion storage 364: lotion drop port 365: softener tank accommodating part 365a: Connection part for automatic injection of softener 370: The lower part of the flow path 371: The discharge port of the lower part of the flow path 372: The lower path of the first flow path 373: The lower path of the second flow path 374: path confluence 375: Clean path 376: Foam generation department 377: pin 380:Three-way valve 381: Lotion three-way valve 382: softener three-way valve 390: pump unit 391: Pump internal flow path 392a: Pump unit inlet 392b: Pump unit outlet 393: Inlet check valve 394: Outlet check valve 395: Piston 396: motor 397: Cylinder 400: lotion box 410: Powder lotion manual input department 420: Liquid lotion manual input part 430: Softener manual input part 450: lotion tank 451: Detergent tank input part 452: The lotion is automatically put into the insertion port 460: softener tank 461: Softener tank input part 462: The softener is automatically put into the insertion port 500: Sink 600: Shell 610: lower shell 620: upper shell 621: input port 700: cover body 800:Operation Department 911: Entrance Wall 912: exit wall 930: divider wall 931: The first splitter wall 932: The second splitter wall 933: The third splitter wall 940: confluence 941: The first confluence port 942: The second confluence port 945: Clean path exit 950: Wash path entrance 960: protruding wall 961: 1st protruding wall 962: The second protruding wall P, Q: drop position X,Y,Z: Flow of water A-A, B-B, C-C, D-D, E-E, F-F, H-H, J-J: line

Fig. 1 is an external perspective view showing the configuration of a washing machine according to Embodiment 1 with a lid closed.

Fig. 2 is an external perspective view showing the configuration of the washing machine in Embodiment 1 with the lid opened.

3 is an external perspective view showing the configuration of the water supply unit and its surroundings of the washing machine in Embodiment 1, with the detergent box, detergent tank, and softener tank drawn out.

Fig. 4 is a rear view showing the structure of the water supply unit and its surroundings of the washing machine in the first embodiment.

Fig. 5 is an exploded perspective view showing the configuration of a water supply unit and its surroundings in the washing machine according to the first embodiment.

Fig. 6 is a plan view showing the configuration of the water supply unit and its surroundings of the washing machine in Embodiment 1, with the flow path cover removed.

Fig. 7 shows the structure of the water supply unit and its surroundings of the washing machine in Embodiment 1, and is used to illustrate that the flow path cover has been removed in the state where the detergent box, detergent tank, and softener tank are detached. A top view of the section of the state.

Fig. 8 is an F-F sectional view of the water supply unit shown in Fig. 7 .

Fig. 9 is a plan view showing the configuration of the water supply unit and its surroundings of the washing machine in Embodiment 1, with the detergent box, detergent tank, and softener tank pulled out, with the flow path cover removed.

Fig. 10 is a B-B sectional view of the water supply unit shown in Fig. 7 .

Fig. 11 is an E-E sectional view of the water supply unit shown in Fig. 7 .

Fig. 12 is a C-C sectional view of the water supply unit shown in Fig. 7 .

Fig. 13 is an A-A sectional view of the water supply unit shown in Fig. 7 .

Fig. 14 is a D-D sectional view of the water supply unit shown in Fig. 7 .

Fig. 15 is an external front view showing the structure of the water supply unit and its surroundings of the washing machine in Embodiment 1, with the detergent box, detergent tank, and softener tank removed.

Fig. 16A is a plan view showing the configuration of the water supply unit and its surroundings of the washing machine in Embodiment 1, and illustrating a section in which the detergent tank is housed, with the flow path cover removed.

Fig. 16B is a plan view showing the configuration of the water supply unit and its surroundings of the washing machine in Embodiment 1, and illustrating a cross section in which the detergent tank is pulled out and the flow path cover is removed.

Fig. 17 is a H-H sectional view of the water supply unit shown in Fig. 16A.

Fig. 18 is a J-J sectional view of the water supply unit shown in Fig. 16B.

Fig. 19 is a plan view of the lower part of the flow path of the washing machine in Embodiment 1.

Fig. 20 is a schematic view showing the structure of the lower passage of the first flow passage and the periphery of the washing passage in the washing machine according to the first embodiment.

326: Cleaning path outlet

370: The lower part of the flow path

372: The lower path of the first flow path

375: Clean path

911: Entrance Wall

912: exit wall

930: divider wall

931: The first splitter wall

932: The second splitter wall

933: The third splitter wall

940: confluence

941: The first confluence port

942: The second confluence port

945: Clean path exit

950: Wash path entrance

960: protruding wall

961: 1st protruding wall

962: The second protruding wall

P, Q: drop position

Claims (7)

A washing machine comprising: a washing tank for holding laundry; A liquid agent input device, which injects the liquid agent into the aforementioned washing tank; a flow path for the liquid agent supplied to the washing tank to flow; and a water supply unit that supplies water to the flow path unit, The aforementioned flow path part includes: The first flow path is for washing water to flow; The second flow path passes through the drop position of the liquid agent; a confluence part for converging the washing water flowing in the second flow path to the first flow path; and The protruding wall is formed to protrude toward the first flow path from the vicinity of the upstream side of the confluence portion toward the downstream side of the first flow path. The washing machine according to claim 1, wherein the confluence part includes: Junction 1; and The second confluence part is provided on the downstream side of the first confluence part, The protruding wall is formed to protrude toward the first flow path from the vicinity of the upstream side of the first confluent portion toward the downstream side of the first flow path. The washing machine according to claim 1, wherein the flow path part has one or more confluence parts, At least one confluence part is provided on the downstream side of the drop position. The washing machine according to any one of Claims 1 to 3, wherein the flow path part has: The dividing wall separates the first flow path from the second flow path between the first flow path and the second flow path, The second flow path is arranged parallel to the first flow path, The second flow path is branched from the first flow path. The washing machine according to any one of claims 1 to 4, which has: The tank accommodating part accommodates the liquid agent tank for storing the liquid agent, The aforementioned liquid agent input device includes: the aforementioned liquid agent tank; and The liquid agent automatic feeding device is connected to the aforementioned liquid agent tank, and supplies the liquid agent stored in the aforementioned liquid agent tank to the aforementioned washing tank, The drop position is located below the opening formed on the inner bottom surface of the tank accommodating portion. The washing machine according to any one of claims 1 to 4, which has: The tank accommodating part accommodates the liquid agent tank for storing the liquid agent, The aforementioned liquid agent input device includes: the aforementioned liquid agent tank; and The liquid agent automatic feeding device is connected to the aforementioned liquid agent tank, and supplies the liquid agent stored in the aforementioned liquid agent tank to the aforementioned washing tank, The aforementioned liquid agent tank is connected with the aforementioned liquid agent automatic injection device through the connecting portion, The drop position is located below the connecting portion. The washing machine according to claim 5, wherein the liquid agent tank is connected to the liquid agent automatic injection device through a connecting part, The aforementioned opening is disposed below the aforementioned connecting portion.

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