TW202244354A - washing machine - Google Patents

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 a washing machine.

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

The washing machine in Patent Document 1 is equipped with: a liquid agent tank for containing the liquid agent; an automatic liquid agent input device for automatically supplying the liquid agent in the liquid agent tank toward the washing tank; and a water supply valve for automatically injecting the liquid agent through the water channel The device is connected. The washing machine drives the liquid agent automatic injection device to supply the liquid agent into the washing tub, and then opens the water supply valve to supply water into the liquid agent automatic injection device. prior art literature

patent documents Patent Document 1: International Publication No. 2019/039140

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

The washing machine in the present disclosure comprises: a casing; a washing tank, which is arranged inside the casing and accommodates laundry; a water guiding path; a liquid agent tank; and an automatic liquid agent input 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 feeding device injects the liquid agent stored in the liquid agent tank to the washing tank. The water guide path includes: the first waterway, which supplies water to the washing tank without passing through the automatic liquid injection device; the second waterway, which supplies water to the washing tank through the automatic liquid injection device; and the retention part, which is arranged in the first Below the water channel and downstream of the second water channel, the lotion solution supplied from the second water channel is stagnated. In addition, the washing machine supplies water to the stagnation part through the first water channel after a predetermined time elapses after driving the liquid agent automatic injection device to inject the liquid agent.

The washing machine in this disclosure efficiently mixes the liquid agent discharged from the liquid agent automatic injection device with water.

form for carrying out the invention Hereinafter, embodiments will be described in detail with reference to the drawings. 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 18 . [1-1. Composition] [1-1-1. Configuration of washing machine]

1 and 2 are external 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 in a cylindrical body opened upward, and can accommodate laundry to perform a washing operation for washing the laundry. In addition, washing tub 500 is rotatably enclosed in an outer tub (not shown) in which water is stored. 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 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 housing 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 three-way valve for lotion 381 or the three-way valve for softener 382, for example, In addition, the overall operation of the washing machine 100 is also controlled. 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.

As shown in FIG. 2 , in upper case 620 , detergent tank 450 , softener tank 460 , and detergent box 400 are arranged such that the front faces thereof are flush when housed in water supply unit 300 (see FIG. 5 ).

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. 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 portion 451 and a softener tank input portion 461 whose upper surfaces are opened so that liquid can be injected. The lotion tank 450 and the softener tank 460 are respectively provided with a remaining volume scale 450a of the lotion tank and a scale 460a of the remaining volume of the softener tank made of transparent materials, allowing the user to visually confirm the amount of the detergent.

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.

The cover body 700 is partially configured to be transparent. Thereby, even if the cover body 700 is closed, the user can still visually confirm the remaining amount scale 450a of the lotion tank and the remaining amount scale 460a of the softener tank to confirm the agent stored in the lotion tank 450 and the softener tank 460. 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 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 water supply unit case part 320 , and the flow path lower part 370 is attached to the lower bottom of the water supply unit case part 320 .

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 water supply unit casing 320 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 FIG. 5 , 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 drawn 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 FIG. 3 and FIG. 4 , when viewed from the back of the water supply unit housing part 320 , the liquid agent automatic injection device 301 is installed on the right part. 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.

FIG. 6 is a plan view showing the structure of the water supply unit 300 and its surroundings, excluding the flow path cover 340 . FIG. 7 is a top view showing the flow of water in the water supply unit housing portion 320 . FIG. 8 is an F-F sectional view of the water supply unit 300 shown in 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 the water supply unit 300 shown in 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 . Here, the water guiding path includes: the first water guiding path 321 and the second water guiding path 322 as the first water path, the third water guiding path 323 as the second water path, and the foam generating portion 376 (refer to FIG. 17 ). [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. That is, the first water channel, that is, the first water guiding path 321 and the second water guiding path 322 supply water to the washing tank 500 without passing through the liquid agent automatic injection device 301 .

Inside the detergent 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. The powder detergent manual input unit 410, the liquid detergent manual input unit 420, and the softener manual input unit 430 are configured so that users can inject various agents.

As shown in Figures 6 and 8, 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 liquid accumulated inside to the lower part. The liquid 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 an E-E sectional view of the water supply unit 300 shown in FIG. 7 . FIG. 12 is a C-C sectional view of the water supply unit 300 shown in FIG. 7 . FIG. 13 is an A-A sectional view of the water supply unit 300 shown in FIG. 7 . FIG. 14 is a D-D sectional view of the water supply unit 300 shown in FIG. 7 . As shown in FIG. 11 , the third water guide path 323 is formed along the rear surface of the water supply unit case portion 320 covering a substantially horizontal direction, and opens on the rear side of the washing channel water guide port 324 . 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 . That is, the third water guide path 323 , which is the second water channel, supplies water to the washing tank 500 through the liquid medicine automatic 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 respectively connected to the lotion tank 450 and the softener tank 460 accommodated in the lotion tank accommodating part 360 and the softener tank accommodating part 365 as described later.

FIG. 15 is an enlarged view of main parts around the connection portion 360 a for automatic detergent injection in a state where the detergent tank 450 is accommodated in the detergent tank accommodating portion 360 . As shown in FIG. 15 , a detergent tank insertion port 302 is provided on the rear side of the detergent tank 450 , and a detergent tank check valve 302 a opened by being pushed in is provided inside the detergent tank insertion port 302 . 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.

The connection part 360a for automatic injection of lotion and the connection part 365a for automatic injection of softener are provided on the inner back of the lotion tank accommodating part 360 and the softener tank accommodating part 365, respectively. 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 automatic detergent injection opening 452 and the softener automatic injection insertion opening 462 are formed to protrude forward. In the state where the lotion tank 450 and the softener tank 460 are respectively accommodated in the lotion tank accommodating portion 360 and the softener tank accommodating portion 365, the automatic lotion injection port 452 is connected to the lotion tank 450, and the softener is automatically injected. The insertion port 462 is connected to the softener tank 460 .

A storage portion 363 is provided on the inner bottom surface of the detergent tank accommodating portion 360 . Storage portion 363 is a depression capable of storing liquid, 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 .

On the inner bottom surface of the detergent tank housing part 360 , a drop port 364 communicating with the flow path lower part 370 is formed at a position adjacent to the storage part 363 . The dropping port 364 is disposed at a position below the detergent tank insertion port 302 in a state where the detergent tank 450 is accommodated in the detergent tank accommodating portion 360 . The drop port 364 allows the liquid lotion leaked from the lotion tank insertion port 302 or the lotion automatic injection port 452 to flow down to the cleaning path 319 .

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 liquid. The path 325 in the automatic feeding device 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 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 . In addition, the softener three-way valve 382 is disposed so as to communicate with the lotion three-way valve 381 , the softener automatic injection port 462 , and the automatic injection device inner path 325 . 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 washing machine 100 can control the flow of detergent, softener and water by opening and closing at least one of the detergent three-way valve 381 and the softener three-way valve 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 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 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. Flow path lower part]

FIG. 16 is a plan view showing the configuration of the flow path lower portion 370 . FIG. 17 is a plan view showing the flow of water in the lower portion 370 of the flow path. As shown in FIG. 16 , the lower flow path 370 includes a first lower flow path 372 , a cleaning path 319 , 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 cleaning path 319 is provided below the dropping port 364 . The second flow path lower path 373 passes the liquid discharged from the detergent box 400 .

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

The foam generation part 376 is provided on the downstream side of the first flow path lower path 372 and is arranged below the water injection port 335 for foam generation. That is, the foam generation part 376 is provided at a position where the liquid passing through the first flow path lower path 372 collides with the water poured from the foam generation water injection port 335 . In other words, the foam generator 376 is disposed below the first water guiding path 321 and the second water guiding path 322 and downstream of the third water guiding path 323 , for the lotion solution supplied from the third water guiding path 323 to stagnate.

The foam generating part 376 includes a plurality of pins 377, a peripheral rib 376a, a foam generating part inlet 376c, and a foam generating part outlet 376b. A plurality of pins 377 are formed to protrude upward. The peripheral rib 376 a surrounds the periphery of the foam generation part 376 . The foam generating part inlet 376c is an inlet to the area surrounded by the peripheral rib 376a. The foam generating portion outlet 376b is an outlet from the area enclosed by the surrounding rib 376a.

The first flow path lower path 372 communicates with the second flow path lower path 373 in the confluence portion 375 . The flow path lower discharge port 371 is provided downstream of the confluence part 375 and is formed to open downward in order to drop the liquid into the 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. 14, Fig. 17, 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.

FIG. 18 is a timing chart of washing machine 100 during washing machine operation. As shown in FIG. 18 , before the laundry operation starts, the liquid agent automatic injection device 301 is driven to automatically inject the liquid agent. 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, moves the piston 395 up and down, sucks an appropriate amount of liquid lotion from the pump unit inlet 392a, and discharges it from the pump unit outlet 392b. The discharged lotion flows into the first channel lower channel 372 through the cleaning channel outlet 326 .

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. The driving of the piston 395 and the detergent delivery operation are carried out alternately.

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, in the state where the first water guide cylinder 311 is closed, the third water guide cylinder 313 is opened. 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 water supply valve 310 can supply a sufficient amount of water to the third water guide path 323 .

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 lotion liquid flowing into the first flow path lower path 372 through the washing path outlet 326 reaches the foam generating part 376 downstream of the washing path outlet 374 . The lotion liquid reaching the foam generating part 376 is diffused by the pin 377, and stays in the area surrounded by the peripheral rib 376a.

Thereafter, the first water guide cylinder 311 is opened, and water supply to the first water guide path 321 is started. 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. The agent manual injection part 410 , the liquid lotion manual injection part 420 , the tank pump 314 and the foam generation part 376 . 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 .

In the state where the first water guiding cylinder 311 is opened, the water injection port 335 for foam generation injects water toward the foam generation part 376 . The poured water collides with the lotion liquid remaining in the foam generating portion 376 to generate lotion foam. Most of the generated lotion foam flows out from the foam generating portion 376 over the surrounding ribs 376a. The lotion liquid and water flow out from the foam generating part 376 through the foam generating part outlet 376b. Lotion foam, lotion liquid, and water merge into the second lower channel 373 through the first lower channel 372 and are poured into the washing tank 500 from the outlet 371 at the lower channel.

Since liquid lotion and lotion liquid are more viscous than water, the flow velocity when passing through the lower path 372 of the first flow path becomes smaller. Therefore, washing machine 100 according to the present embodiment is configured to provide standby time t between driving piston 395 and detergent delivery operation when automatic liquid agent injector 301 is driven for a predetermined time or longer. That is, the washing machine 100 starts the detergent delivery operation after the standby time t after the stop of the driving of the piston 395 when the amount of the liquid agent dispensed by the automatic liquid agent injector 301 is more than a predetermined amount. The waiting time t is set to be the time until the detergent remaining in the first channel lower path 372 reaches the foam generating unit 376 . As a result, the detergent remaining in the lower channel 372 of the first flow channel reaches the foam generating part 376 and stays there, and is diluted by the water poured from the water injection port 335 for foam generation. Therefore, even if the input amount of the liquid agent carried out by the liquid agent automatic input device 301 is large, the liquid agent and water will still be mixed reliably, and the stock solution of the liquid lotion can be prevented from adhering to the washing tank 500. The condition of the clothes placed.

Next, implement path scrubbing. During route cleaning, the third water guide cylinder 313 is opened while the first water guide cylinder 311 is closed. 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 . 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, 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 .

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 .

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. [1-3. Function, etc.]

As described above, the washing machine 100 according to Embodiment 1 includes the casing 600 , the washing tank 500 , the water guiding path, the detergent tank 450 , and the liquid agent automatic injection device 301 . The washing tank 500 is disposed inside the casing 600 and accommodates laundry. The water guide path supplies water introduced from the water supply valve 310 to the washing tub 500 . The detergent tank 450 stores the detergent inside. The liquid agent automatic injection device 301 injects the lotion stored in the lotion tank 450 to the washing tank 500 . The water guiding path includes: a first water guiding path 321 , a second water guiding path 322 and a foam generating part 376 . The first water guide path 321 supplies water to the washing tank 500 without passing through the liquid agent automatic injection device 301 . The second water guiding path 322 supplies water to the washing tank 500 through the liquid agent automatic injection device 301 . The foam generator 376 is disposed below the first water guiding path 321 and downstream of the third water guiding path 323 in the installed state, and allows the lotion liquid supplied from the third water guiding path 323 to stagnate. In addition, the washing machine 100 supplies water to the foam generating part 376 through the first water guide path 321 after the standby time t elapses after the automatic liquid agent injection device 301 is driven to inject the detergent.

Thereby, after the waiting time t, which is the waiting time t for the detergent remaining in the lower channel 372 of the first channel to reach the foam generating part 376, water is poured from the first water guiding path 321 toward the foam generating part 376, so the injected water and the stagnant water The lotion in the foam generating part 376 is mixed.

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

As in the present embodiment, when the amount of lotion discharged from the automatic liquid agent injection device 301 is greater than a predetermined amount, water may be supplied to the foam generating part 376 through the first water guide path 321 after the elapse of the standby time t. .

Thereby, even if the amount of the discharged lotion is large and it takes time to reach the foam generating part 376 , the water and the liquid agent can be reliably mixed in the foam generating part 376 .

As in this embodiment, after the automatic injection of the lotion by driving the liquid agent automatic injection device 301 and injecting the lotion, the third water guide tube 313 can be opened in the state where the first water guide tube 311 is closed, and the treatment of the lotion can be started. The third water guiding path 323 supplies water.

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

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

Like the present embodiment, a plurality of pins 377 formed to protrude upward may be provided on the foam generating portion 376 .

Accordingly, the lotion, water, and lotion liquid that have reached the pin 377 stagnate near the pin 377 .

Therefore, it is possible to prevent the detergent, water, and detergent liquid that have reached the foam generating unit 376 from being immediately washed away, and it is possible to supply the detergent liquid to the washing tub 500 over a long period of time. (Other implementation forms)

As described above, Embodiment 1 has been described as an example of the technology disclosed in this application. However, the technology in this disclosure is not limited thereto.

Therefore, other embodiments will be illustrated below.

In Embodiments 1 and 2, the washing machine 100 which is an upright washing machine was described as an example of the washing machine. The washing machine is not limited to the upright type washing machine, for example, it may be a drum type washing machine or a double tank type washing machine.

In Embodiment 1, as an example of the configuration in which the water supply part is driven to supply water to the first water channel, and the liquid medicine automatic injection device is driven to inject the liquid medicine, water is supplied to the first water guide path 321, and the liquid medicine The action of driving the automatic injection device 301 to inject the liquid agent. The first water path is not limited to the first water guiding path 321 as long as it supplies water to the washing tank or the outer tank without passing through the liquid agent automatic injection device, and may be the second water guiding path 322 , for example. Furthermore, in Embodiment 1, the operation of injecting the liquid lotion was described as an example of the configuration in which the automatic liquid injection device is driven to inject the liquid. The liquid agent is not limited to a liquid lotion, and may be a softener, for example.

In Embodiment 1, as an example of the water injection port for foam generation, the water injection port 335 for foam generation that injects water into the flow path lower portion 370 without passing through the detergent box 400 was described. The water injection port for foam generation is not limited to the water injection port 335 for foam generation, since it is only necessary to inject water toward the confluence channel. For example, the water inlet for foam generation may be configured to inject water into the lower part of the flow path through the detergent box, and may also be configured to serve as a powder detergent water inlet, a liquid detergent water inlet, or a softener water inlet.

Industrial availability The disclosure is applicable to a washing machine equipped with an automatic liquid agent feeding 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 318: Wash path entrance 319: Clean path 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: storage department 364: drop mouth 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: Clean path exit 375: confluence 376: Foam generation department 376a: Peripheral ribs 376b: Exit of foam generating part 376c: Entrance to the foam generating unit 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 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 450a: Scale of remaining amount of lotion tank 451: Detergent tank input part 452: The lotion is automatically put into the insertion port 460: softener tank 460a: Scale of remaining amount of 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 t: standby time X,Y,Z: Flow of water A-A,B-B,C-C,D-D,E-E,F-F: 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 is a plan view showing the flow of water in the water supply unit casing of the washing machine according to the first embodiment.

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 enlarged view of main parts around the connection portion for automatically injecting detergent in a state where the detergent tank is housed in the detergent tank accommodating portion.

Fig. 16 is a plan view showing the structure of the lower part of the flow path of the washing machine in the first embodiment.

Fig. 17 is a plan view showing the flow of water in the lower portion of the flow path of the washing machine according to the first embodiment.

Fig. 18 is a time chart during the washing operation of the washing machine in the first embodiment.

t: standby time

Claims (4)

A washing machine comprising: case; The washing tank is arranged inside the aforementioned shell and accommodates the laundry; The water guiding path supplies the water introduced from the water supply valve to the aforementioned washing tank; a liquid agent tank for storing the liquid agent therein; and The liquid agent automatic injection device injects the liquid agent stored in the aforementioned liquid agent tank to the aforementioned washing tank, The aforementioned water guide path includes: The first waterway supplies water to the aforementioned washing tank without passing through the aforementioned liquid agent automatic injection device; The second waterway supplies water to the aforementioned washing tank through the aforementioned liquid agent automatic injection device; and The stagnation part is disposed below the first waterway and downstream of the second waterway in the installed state, and retains the lotion liquid supplied from the second waterway, After a predetermined time elapses after the liquid agent automatic injection device is driven to inject the liquid agent, water is supplied to the retention part through the first water channel. The washing machine according to claim 1, wherein water is supplied to the stagnation part through the first water channel after the predetermined time elapses when the amount of the liquid agent discharged from the automatic liquid agent injection device is more than a predetermined amount. The washing machine according to claim 1 or 2, after driving the liquid agent automatic injection device to inject the liquid agent, In a state where water is not supplied to the first water channel, water supply to the second water channel is started. The washing machine according to any one of claims 1 to 3, wherein a plurality of pins protruding upward are provided on the retention portion.

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