TW202317830A - washing machine - Google Patents

Abstract

A washing machine according to the present disclosure comprises: an outer tub elastically supported within a housing; a first tank containing a liquid detergent to be supplied to the outer tub; a second tank containing a liquid detergent to be supplied to the outer tub; a first automatic liquid detergent dispensing device which is connected to the first tank and which discharges the liquid detergent from a first discharge port; a second automatic liquid detergent dispensing device which is connected to the second tank and which discharges the liquid detergent from a second discharge port; and a liquid detergent discharge channel which is connected to the first and second discharge ports and through which the liquid detergent flows to the outer tub. The liquid detergent discharge channel extends obliquely downward along the perimeter of the outer tub.

Description

washing machine

field of invention

The present disclosure relates to a washing machine.

Background of the invention

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

The washing machine described in Patent Document 1 is provided with two tanks, that is, an automatic feeding device including a tank box in which a detergent tank and a softener tank are installed. The automatic feeding device will automatically supply the required amount of detergent and softener from the tank to the discharge part, and then put it into the outer tank. [Prior Art Literature]

[Patent Document] [Patent Document 1] Japanese Patent Laid-Open No. 2021-007638

Summary of the invention

However, in the washing machine described in Patent Document 1, there is still room for improvement in terms of suppression of so-called clogging of the liquid agent between the tank storing the liquid agent and the outer tank.

Therefore, the object of the present disclosure is to solve the above-mentioned problems, and to provide a washing machine capable of suppressing liquid agent clogging between the liquid agent storage tank and the outer tank.

A washing machine according to an aspect of the present disclosure includes an outer tank, a first storage tank, a second storage tank, a first automatic liquid agent injection device, a second automatic liquid agent injection device, and a liquid agent discharge flow path. The outer groove is elastically supported in the casing. The first storage tank is used to accommodate the liquid agent supplied to the outer tank. The second storage tank is used to accommodate the liquid agent supplied to the outer tank. The first automatic liquid agent injection device is connected to the first container, and discharges the liquid agent from the first discharge port. The second automatic liquid agent injection device is connected to the second container, and discharges the liquid agent from the second discharge port. The liquid agent discharge channel is connected to the first discharge port and the second discharge port, and the liquid agent flows to the outer tank. The liquid agent discharge channel extends obliquely downward along the outer periphery of the outer tank.

According to the present disclosure, there is provided a washing machine capable of suppressing liquid agent clogging between a liquid agent storage tank and an outer tank.

[Form for carrying out the invention] (implementation type)

The washing machine in the embodiment of the present disclosure will be described. [whole composition]

Fig. 1 is a schematic sectional view showing a washing machine 1 according to an embodiment of the present disclosure. FIG. 2 is a schematic front view of the washing machine 1 . The washing machine 1 of the present embodiment is a washer-drying machine having a liquid agent automatic injection function. In this specification, the so-called liquid agent is a liquid agent used for washing laundry 15 such as clothes, and includes lotion, softener, neutral detergent, and the like.

As shown in FIG. 1 , a washing machine 1 is provided with a housing 2, an outer tank 3, an inner tank 4, a drive unit 5, an automatic input unit 6, a connecting flow path 8, a water supply valve 10, a drain valve 11, and a control unit (not shown). . ＜Shell＞

The housing 2 is a member forming the appearance of the washing machine 1 . The front of the casing 2 is provided with an opening 20 and a freely openable door 21 covering the opening 20 . ＜Outer Tank＞

The outer tank 3 is provided inside the casing 2 and is a substantially cylindrical member having a function of storing washing water. The outer tank 3 is elastically supported in the housing 2 . The outer tank 3 can also be called a water tank. The outer tank 3 has a cylindrical portion 34 and a bottom portion 36 closing one end of the cylindrical portion 34 . The central axis V0 of the outer tank 3 passes through the center of the bottom 36 . The central axis V0 is inclined relative to the horizontal. The outer tank 3 has an opening 31 at a position facing the opening 20 of the housing 2 , and is sealed and connected with the opening 20 of the housing 2 by a telescoping tube 32 . The outer tank 3 is further provided with openings 33, 35 for allowing water to flow. The opening 33 is an opening connected to the connection flow path 8 . The opening 35 is a drain for draining water from the outer tank 3 to the outside.

In the description below, the horizontal direction along the central axis V0 is referred to as the front-rear direction M ( FIG. 1 ), and the horizontal direction perpendicular to a plane including the central axis V0 is referred to as the width direction K ( FIG. 2 ). The front-rear direction M has a front side M1 toward the opening 31 and a rear side M2 toward the bottom 36 , and the width direction K has a center side K2 away from the central axis V0 from the outer side K1 to the central axis V0 . ＜Inner Tank＞

The inner tank 4 is a substantially cylindrical member provided on the inner side of the outer tank 3 so as to be rotatable about the central axis V0, and is used to accommodate laundry 15 such as clothes. The inner tank 4 can also be called a drum. A large number of through holes 40 are formed in the inner tank 4 . The through hole 40 communicates the inner tank 4 and the outer tank 3 and allows washing water to move from the inner tank 4 to the outer tank 3 . The inner tank 4 further has an opening 41 at a position facing the opening 20 of the housing 2 and the opening 31 of the outer tank 3 . ＜Drive Unit＞

The drive unit 5 is a member that drives the inner tank 4 to rotate around the central axis V0. The driving unit 5 has, for example, a motor that rotates the inner tank 4 . ＜Automatic input unit＞

The automatic injection unit 6 is a unit for automatically injecting a predetermined amount of liquid medicine determined by the control unit into the outer tank 3 from a storage tank for storing the liquid medicine. If the automatic input unit 6 does not manually inject the liquid agent, it will put an appropriate type of liquid agent in an appropriate amount in response to the amount or type of the laundry 15 during the cleaning process or the rinsing process, etc. to outer tank 3. The automatic feeding unit 6 is connected to the outer tank 3 via a connecting flow path 8 in order to supply the liquid agent to the outer tank 3 .

The automatic input unit 6 includes a box body 61, storage tanks 62A, 62B, and 62C (storage tanks 62B, 62C are not shown), liquid agent injection devices 63A, 63B, 63C (liquid agent input devices 63B, 63C are not shown), liquid Agent discharge channel 64 , manual input unit 65 , and water supply solenoid valve 66 .

As shown in FIG. 2 , the automatic input unit 6 is arranged obliquely above the outer tank 3 inside the casing 2 . The automatic input unit 6 faces an openable and closable cover 60 provided on the upper surface of the casing 2 . The automatic feeding unit 6 has a shape along the outer periphery of the cylindrical portion 34 of the outer tank 3 . ＜Connection flow path＞

The connection flow path 8 is a flow path for supplying the liquid agent from the automatic injection unit 6 to the outer tank 3 . The connection flow path 8 extends downward from the automatic input unit 6 to the opening 33 of the outer tank 3 . ＜Water supply valve＞

The water supply valve 10 is a valve for supplying water to the outer tank 3 via the automatic input unit 6 . The water supply valve 10 is arranged on the upper part of the casing 2 . ＜Drain valve＞

The drain valve 11 is configured to be openable and closable, and drains the water accumulated in the outer tank 3 through the opening 35 of the outer tank 3 . The drain valve 11 is provided at the lower part of the casing 2 . ＜Control Unit＞

The control unit is for controlling the operation of the washing machine 1 . The control unit controls the constituent elements of the washing machine 1 such as the drive unit 5 , the liquid agent injection devices 63A, 63B, and 63C of the automatic injection unit 6 , the water supply valve 10 , and the drain valve 11 . The control unit may include, for example, a program-stored memory (not shown) and a processing circuit (not shown) corresponding to a processor such as a CPU, and the processor may execute the program to function as these elements.

Next, the constituent elements of the automatic feeding unit 6 will be described with reference to FIGS. 3 to 6 . 3 and 4 are perspective views of the automatic feeding unit 6 . FIG. 5 is a top view of the automatic input unit 6 . FIG. 6 is a perspective view of a part of the automatic feeding unit 6 . ＜Box＞

As shown in FIG. 3 , the case body 61 is a member for accommodating the storage tanks 62A, 62B, and 62C constituting the automatic input unit 6 and the manual input portion 65 . The bottom surface 55 of the case body 61 has a shape inclined along the outer periphery of the cylindrical portion 34 schematically shown by a dotted line.

Here, let the surface of the front side M1 of the case 61 be the front 56 ( FIG. 3 ), and let the surface of the rear side M2 of the case 61 be the back 57 ( FIG. 4 ). As shown in FIG. 4 , the back surface 57 of the box body 61 is connected with liquid agent injection devices 63A, 63B ( FIG. 6 ), 63C ( FIG. 6 ), liquid agent discharge flow path 64 , water supply solenoid valve 66 , and connection flow path 8. .

As shown in FIG. 5 , a supply flow path 67 is formed on the upper portion of the case body 61 . The supply flow path 67 forms a plurality of independent paths along the outer periphery of the case body 61 . The respective paths supply water from the water supply solenoid valve 66 to the inside of the case body 61 . ＜Water supply solenoid valve＞

As shown in FIGS. 4 and 5 , the water supply solenoid valve 66 is composed of three solenoid valves, and the path of the supply channel 67 ( FIG. 5 ) serving as a water supply destination is changed by opening and closing each valve. ＜Container＞

As shown in FIG. 5 , three storage tanks 62A, 62B, and 62C are housed in the case body 61 in a state aligned in the width direction K. As shown in FIG. The storage tanks 62A, 62B, and 62C are containers for storing liquid agents used in the cleaning process and the rinsing process. For example, the neutral lotion is stored in the tank 62A, the softener is stored in the tank 62B, and the lotion is stored in the tank 62C. The storage tanks 62A, 62B, 62C are detachable relative to the box body 61 . In a state where the manual input unit 65 is taken out from the case body 61 , an empty space is formed on the front side M1 of the storage tank 62 . In this state, the storage tanks 62A, 62B, and 62C can be pulled toward the front side M1 to be detached from the liquid agent injection devices 63A, 63B, and 63C ( FIG. 6 ), and taken out upward. ＜Manual input part＞

The manual injection unit 65 is a mechanism for allowing the user to manually inject one serving of liquid agent as a cleaning treatment agent. The amount of liquid medicine injected manually flows into the outer tank 3 ( FIG. 1 ) from the box body 61 through the connecting flow path 8 ( FIG. 1 ). The liquid agent that is thrown in manually can also be liquid or powder. The manual input portion 65 is detachably accommodated in the box body 61 . ＜Liquid injection device＞

As shown in FIG. 6 , the liquid agent injecting devices 63A, 63B, and 63C are devices that suck a predetermined amount of liquid agent from the tanks 62A, 62B, and 62C and discharge it to the liquid agent discharge channel 64 . The liquid injection devices 63A, 63B, and 63C are respectively connected to the storage tanks 62A, 62B, and 62C in the front-rear direction M through the back surface 57 of the case body 61 . The liquid agent injection device 63A is connected to the storage tank 62A. The liquid agent input device 63B is connected to the storage tank 62B. The liquid agent injection device 63C is connected to the storage tank 62C. The liquid agent injecting devices 63A, 63B, and 63C are aligned in the width direction K and arranged. ＜Liquid Discharge Channel＞

As shown in FIG. 6 , the liquid agent discharge channel 64 is a channel member for supplying the liquid agent and water to the outer tank 3 ( FIG. 1 ) via the case body 61 . The liquid agent discharge channel 64 is provided on the back surface 57 of the case 61, and is connected to the three liquid agent injection devices 63A, 63B, and 63C. The liquid agent discharge channel 64 extends obliquely downward toward the outer side K1 along the outer periphery of the outer tank 3 . In other words, the liquid agent discharge channel 64 extends obliquely downward with respect to the horizontal plane from upstream to downstream. The fluid (for example, water W0 ) flowing in the liquid agent discharge channel 64 flows in one direction in accordance with the inclination of the liquid agent discharge channel 64 .

Next, the structure of the case body 61 and the liquid agent discharge channel 64 of the automatic injection unit 6 will be described in more detail with reference to FIGS. 7, 8A to 8D. FIG. 7 is a perspective view of the case body 61 . FIG. 8A is an exploded view of the liquid agent discharge channel 64 . FIG. 8B is a perspective view of the cover member 93 . FIG. 8C is a perspective view of the liquid agent discharge channel 64 . FIG. 8D is a cross-sectional view of the liquid agent discharge channel 64 .

As shown in FIG. 7 , the box body 61 has inner bottom surfaces B1, B2, and B3. The inner bottom surfaces B1, B2, B3 are arranged in sequence along the outer side K1. The inner bottom surface B1 is a surface located directly below the container tank 62A ( FIG. 6 ). The inner bottom surface B2 is a surface located directly below the container tank 62B ( FIG. 6 ). The inner bottom surface B3 is a surface located directly below the storage tank 62C ( FIG. 6 ).

Tank connection ports 77A, 77B, and 77C, a first case connection port 78 , a second case connection port 79 , and a liquid agent outlet 81 are formed on the rear surface 57 of the case body 61 .

The tank connection ports 77A, 77B, and 77C are openings provided for connecting the tanks 62A, 62B, and 62C accommodated in the case body 61 to the liquid agent injection devices 63A, 63B, and 63C disposed outside the case body 61 .

Moreover, the first case connection port 78 is an opening through which the water flowing from the supply flow path 67 flows into the liquid agent discharge flow path 64 . The second case connection port 79 is an opening through which the water from the liquid agent discharge channel 64 and the automatically injected liquid agent flow into the case body 61 . The liquid agent outlet 81 is an opening through which the fluid flowing into the case 61 from the second case connection port 79 and the fluid flowing from the manual input portion 65 are discharged toward the outer tank 3 through the connection flow path 8 .

The first case connection port 78 is provided at a position higher than the second case connection port 79 , and the second case connection port 79 is provided at a position higher than the liquid agent outlet 81 .

As shown in FIG. 8A , the liquid agent discharge channel 64 is formed by the main body 92 and the cover 93 . The main body 92 forms a space for the automatically poured liquid medicine and water to flow, and has an opening 100 on the side. The cover 93 covers the opening 100 to seal the body 92 . In other words, the body 92 is the inner bottom surface constituting the liquid agent discharge channel 64 , and the cover 93 is one side surface constituting the liquid agent discharge channel 64 .

The main body 92 forms a main flow channel 95 extending laterally, and branch flow channels 96A, 96B, and 96C branching upward from the main flow channel 95 and extending upward. The lower parts of the liquid agent injecting devices 63A, 63B, and 63C (the liquid agent injecting devices 63B, 63C are not shown) are inserted into the branch flow paths 96A, 96B, and 96C, respectively. A discharge port 70 for discharging a predetermined amount of liquid agent is formed at the lower portion of the liquid agent injecting devices 63A, 63B, and 63C. The liquid agent discharged from the discharge port 70 flows into the main flow path 95 from the branch flow paths 96A, 96B, and 96C.

A plurality of wire hooks 97 are formed on the lower portion of the cover 93 . The wire hook 97 is configured to hold a wire 97A extending from an electronic component of the automatic input unit 6 . The lead wire 97A is, for example, a member that connects the power unit 71 described later of the liquid agent injection device 63 to an external power source.

As shown in FIG. 8B , the surface P1 of the cover 93 facing the present flow path 95 is smooth.

As shown in FIG. 8C , an inflow port 98 is formed upstream of the main flow path 95 , and an outflow port 99 is formed downstream of the main flow path 95 . The liquid medicines discharged by the liquid medicine injection devices 63A, 63B, and 63C flow toward the outflow port 99 along the main flow path 95 . In addition, the water flowing from the inflow port 98 is introduced into the main flow path 95 and discharged from the outflow port 99 .

The outflow port 99 is inclined downward. Therefore, it is possible to suppress the liquid agent from remaining in the vicinity of the outflow port 99 .

As shown in FIG. 8D , connection ports 69A, 69B, and 69C are formed at branch points of the present flow path 95 . The connection ports 69A, 69B, and 69C are openings on one end side of the branch flow paths 96A, 96B, and 96C, and face the discharge ports 70 of the liquid agent injecting devices 63A, 63B, and 63C, respectively.

When the liquid agent discharge channel 64 is connected to the case body 61 ( FIG. 7 ), the liquid agent discharge channel 64 is inclined downward. Due to the inclination of the liquid agent discharge flow path 64, the water and the liquid agent flowing in the present flow path 95 flow according to gravity. Furthermore, due to the inclination of the liquid agent discharge channel 64, the connection ports 69A, 69B, and 69C become lower toward the outer side K1 and are arranged in steps. The inflow port 98 is connected to the water supply valve 10 via the case body 61 , and the outflow port 99 is connected to the outer tank 3 via the case body 61 and the connection flow path 8 .

From the above description, the structure for attaching the liquid agent discharge channel 64 to the liquid agent injection devices 63A, 63B, and 63C and the case body 61 is formed in the main body 92 . Therefore, even if misalignment occurs during welding of the main body 92 and the cover 93 described later, misalignment of the liquid agent discharge channel 64 with respect to other components can be suppressed.

This flow path 95 is linearly inclined downward. When the present flow path 95 is inclined linearly, the fluid flows easily, and stagnation of the fluid can be prevented. On the other hand, the inclination angle of the liquid agent discharge flow path 64 may change in the middle of the liquid agent discharge flow path 64 . A flow path portion having components in the horizontal direction (width direction K) may be provided in the middle of the liquid agent discharge flow path 64 .

Returning to FIG. 8A , the dimension D1 of the main flow channel 95 in the front-back direction M is larger than the dimension D2 of the main flow channel 95 in the vertical direction Z on the downstream side of the connection port 69A ( FIG. 8D ). Furthermore, this flow path 95 has an enlarged diameter portion 95A upstream of the outflow port 99 . The cross-sectional area of the enlarged diameter portion 95A increases toward the downstream. In the present embodiment, the enlarged diameter portion 95A is realized by increasing the distance between the upper surface and the lower surface of the flow path 95 . In addition, the diameter-enlarged portion 95A may be realized by increasing the distance between the front and back of the flow path 95 .

The main body 92 and the cover 93 are connected in the front-back direction M. As shown in FIG.

In this embodiment, the main body 92 and the cover 93 are bonded by vibration welding. Accordingly, the body 92 has a plurality of ribs 92A, 92B. The rib 92A is a plate-shaped member that rises from the upper surface of the main body 92 and extends in the front-rear direction M. As shown in FIG. Likewise, the rib 92B is a plate-shaped member that rises from the lower surface of the main body 92 and extends in the front-rear direction M. As shown in FIG. By providing the ribs 92A and 92B, the bending or deformation of the main body 92 along the connection direction can be suppressed during vibration welding, and the strength of the liquid agent discharge flow path 64 can be improved.

The state in which the storage tanks 62A, 62B, and 62C are installed in the case body 61 will be described in more detail with reference to FIG. 9 . FIG. 9 is a perspective sectional view of the automatic feeding unit 6 .

As shown in FIG. 9 , the tanks 62A, 62B, and 62C have depths L1, L2, and L3 in sequence. The depths L1, L2, and L3 are the distances from the upper surfaces of the respective storage tanks 62A, 62B, and 62C to the deepest parts. The depths L1 , L2 , L3 of the tanks 62A, 62B, 62C increase sequentially. The depth L2 of the holding tank 62B is deeper than the depth L1 of the holding tank 62A, and the depth L3 of the holding tank 62C is deeper than the depth L2 of the holding tank 62B. Moreover, since the upper surfaces of the storage tanks 62A, 62B, and 62C have a common shape, the volumes of the storage tanks 62A, 62B, and 62C increase sequentially according to the depths L1, L2, and L3.

As mentioned above, the neutral lotion, softener and lotion are stored in the tanks 62A, 62B and 62C, respectively. Considering the type of liquid agent and the volumes of the storage tanks 62A, 62B, and 62C, the liquid agents may be stored in the storage tanks 62A, 62B, and 62C in order from those with the lowest frequency of use. In addition, the same liquid agents may be accommodated in the tanks 62A, 62B, and 62C.

As shown in FIG. 9 , the bottom surfaces of the storage tanks 62A, 62B, and 62C including the deepest portions extend toward the width direction K and become lower in order. Therefore, the bottom surfaces of the storage tanks 62A, 62B, and 62C are arranged in steps.

Immediately below the container 62C is close to the outside of the case 2 . Compared with the container 62A, 62B, it is easier to secure a space in the vertical direction, so a larger gap can be formed. Therefore, it is possible to easily form the injection flow path 82 for flowing the liquid medicine and water to the outer tank 3 along the inner bottom surface B3. With such a configuration, the space above the outer tank 3 can be effectively utilized. In the injection flow path 82 , the manually injected liquid medicine flows directly from the manual injection part 65 , while the automatically injected liquid medicine flows in through the liquid agent discharge flow path 64 . The injection flow path 82 flows water and the liquid agent along the inner bottom surface B3 toward the liquid agent outlet 81 ( FIG. 7 ).

Connection portions 76A, 76B, 76C are formed at the deepest portions of the storage tanks 62A, 62B, and 62C. The connection parts 76A, 76B, and 76C are structured to include openings for sucking out liquid agents through the liquid agent injecting devices 63A, 63B, and 63C shown in FIG. 6 .

Next, the liquid agent injection devices 63A, 63B, and 63C connected to the tanks 62A, 62B, and 62C will be described in more detail with reference to FIG. 10 .

Here, the container tank 62 is collectively referred to as the container tanks 62A, 62B, and 62C. Similarly, the liquid agent injecting device 63 is used as a general term for the liquid agent injecting devices 63A, 63B, and 63C, the connecting port 69 is used as a general term for the connecting ports 69A, 69B, and 69C, and the branch flow path 96 is used as the branch flow paths 96A, 96B, and 69C. 96C is a generic term, and the connecting portion 76 is used as a generic term for the connecting portions 76A, 76B, and 76C. FIG. 10 is a perspective view of the storage tank 62 , the liquid agent injection device 63 , and the liquid agent discharge channel 64 .

As shown in FIG. 10 , the liquid agent injection device 63 is connected to the storage tank 62 and the liquid agent discharge channel 64 . The liquid agent injecting devices 63A, 63B, and 63C are arranged in steps in order to become lower in order in response to changes in the depth of the connecting portion 76 of the container tank 62 . Furthermore, the stepwise arrangement of the liquid agent injecting device 63 corresponds to the inclination of the liquid agent discharge channel 64 .

The structure of one liquid agent injecting device 63 will be described in more detail with reference to FIGS. 11 to 13 . Fig. 11 is a schematic sectional view of the liquid agent injecting device 63 seen from the lateral direction. FIG. 12 is an enlarged cross-sectional view of the lower end of the liquid agent injecting device 63 . FIG. 13 is a perspective view of the support portion 87 .

As shown in FIG. 11 , the liquid agent injection device 63 includes a power unit 71 , a deceleration mechanism 72 , and a pump mechanism 73 .

The power unit 71 transmits the rotational motion to the reduction mechanism 72 . The decelerating mechanism 72 decelerates the rotational movement of the power part 71 through a plurality of gears (not shown), and has a decelerated output shaft V2. The pump mechanism 73 is a positive displacement pump driven by the output shaft V2 of the reduction mechanism 72 .

The pump mechanism 73 has a piston 83 , a pump cylinder 84 , and an outlet flow path 86 . The piston 83 is connected to the output shaft V2 of the reduction mechanism 72, and reciprocates in the vertical direction Z as the output shaft V2 rotates. The pump cylinder 84 is a member that accommodates the piston 83 and forms a space in which the liquid agent is sucked. The outlet flow path 86 connects the lower end of the pump cylinder 84 to the liquid agent discharge flow path 64 in order to discharge the liquid agent in the pump cylinder 84 to the liquid agent discharge flow path 64 ( FIG. 10 ), and extends in the vertical direction Z. flow path.

As shown in FIG. 12 , a support portion 87 , a seal 89 and a valve 91 are provided on the outlet flow path 86 . The support portion 87 is a member that supports the valve 91 and forms the discharge port 70 of the liquid agent injection device 63 . The support portion 87 protrudes toward the lower side Z1 with respect to the lower end of the outlet flow path 86 . The seal 89 is provided on the valve 91 and prevents backflow of water to the pump cylinder 84 when the valve 91 is closed. Seal 89 may also be an O-ring. The pump 91 is a check valve that controls the flow of the liquid agent in the outlet channel 86 . When the valve 91 is moved downward and opened, the liquid agent is discharged from the discharge port 70 .

As shown in FIG. 13 , the support portion 87 has an outer peripheral cylindrical portion 87A, a central cylindrical portion 87B, and a rib 87C. The discharge port 70 is formed between the outer peripheral cylindrical portion 87A and the central cylindrical portion 87B. The ribs 87C extend radially from the outer peripheral surface of the central cylindrical portion 87B toward the inner peripheral surface of the outer peripheral cylindrical portion 87A. When viewed from the up-down direction Z, the discharge port 70 is defined into three sectors by the rib 87C.

The central cylindrical portion 87B forms a passage 94 for accommodating the valve 91 ( FIG. 12 ), and protrudes toward the lower side Z1 with respect to the outer peripheral cylindrical portion 87A. In the manufacture of the support portion 87, there is a possibility that burrs may be generated at the front end of the central tube portion 87B. When burrs are formed on the front end of the central cylindrical portion 87B, the burrs hinder the movement of the valve 91 and may hinder the discharge of the liquid agent. On the other hand, by protruding the central cylindrical portion 87B, even if a burr occurs at the front end of the central cylindrical portion 87B, excessive hindrance of the movement of the valve 91 can be suppressed.

FIG. 14 is an enlarged view of the vicinity of the discharge port 70 in a state where the liquid agent injection device 63 is inserted into the liquid agent discharge channel 64 . In FIG. 14, the opening of the connection port 69 is shown by the line B-B. As shown in FIG. 14 , the support portion 87 is inserted into the branch flow path 96 , and the discharge port 70 faces the connection port 69 . In this state, when viewed from the vertical direction Z, the entire discharge port 70 is formed inside the connection port 69 ( FIG. 13 ). The entire discharge port 70 is exposed to the water W0 flowing through the flow path 95 . Therefore, when the amount of water W0 flowing in the main flow path 95 is large, and when the water W0 flows near the upper surface of the main flow path 95, a part of the water W1 flows into the branch flow path 96 and hits the discharge port 70 and the central cylindrical portion. 87B. The encountered water W1 falls together with the liquid agent adhering to the discharge port 70 and the valve 91 , and joins the main flow path 95 .

In addition, when the positional relationship in the vertical direction is considered, the outer peripheral cylindrical portion 87A is located above the connection port 69 , and the central cylindrical portion 87B is located below the connection port 69 . The discharge port 70 is formed above the line B-B when viewed in the lateral direction. On the other hand, the lower end of the central cylindrical portion 87B overlaps with the line B-B, and protrudes toward the present flow path 95 . With such an arrangement, the water W1 can be brought into contact with the central cylindrical portion 87B while preventing the outer peripheral cylindrical portion 87A from obstructing the flow of the water W0. [action]

In the above configuration, an example of the operation of the automatic feeding unit 6 will be described next with reference to FIG. 11 , FIG. 14 and FIG. 15 . FIG. 15 is a perspective view of the case 61 showing the flow of water W0 and liquid agents S1 and S2.

The automatic input unit 6 operates during the washing process and the rinsing process of the washing machine 1 . The action of the automatic input unit 6 is controlled by the control unit. The control unit controls, for example, the opening and closing of the water supply solenoid valve 66, and the type, amount, and timing of the liquid agent to be injected.

As shown in FIG. 15 , in the washing process and the rinsing process, water W0 is supplied from the water supply valve 10 to the automatic input unit 6 . The water W0 flows into the case body 61 from the opening 68 formed in the center side K2 through the water supply electromagnetic valve 66 and the supply channel 67 . The water W0 flowing into the case body 61 flows through the liquid agent discharge channel 64 (not shown) inclined from the first case body connection port 78 along gravity, and flows into the side of the case body 61 from the second case body connection port 79. into the flow path 82 . The water W0 flowing into the case body 61 is guided to the liquid agent outlet 81 through the input flow path 82, and flows into the outer tank 3 (not shown) through the connecting flow path 8 (not shown).

The liquid agent injecting device 63C (FIG. 10) connected to the tank 62C (FIG. 10) containing the detergent is driven by the operation of the control part in the cleaning process. The lotion S1 in the tank 62C is discharged from the discharge port 70 to the liquid agent discharge channel 64 by the liquid agent input device 63C.

As shown in FIG. 15 , lotion S1 flows along the inclined liquid agent discharge channel 64 along gravity, and flows into the input channel 82 of the case 61 from the second case connection port 79 . The lotion S1 flowing into the case body 61 is guided to the liquid agent outlet 81 by the inclination of the input flow path 82 , and flows into the outer tank 3 through the connection flow path 8 . The lotion S1 may merge with the water W0 in the liquid agent discharge channel 64 .

On the other hand, when the laundry 15 housed in the outer tank 3 is targeted at washing fashion clothes, instead of the liquid agent injecting device 63C of the tank 62C containing the lotion S1, the container for storing the neutral lotion is driven. The liquid agent input device 63A of the tank 62A.

The liquid agent injecting device 63B of the tank 62B containing the softener S2 is driven by the operation of the control unit in the rinsing process.

Referring back to FIG. 14 , in the cleaning process and the rinsing process, when the liquid agent is discharged from the discharge port 70 , the liquid agent flows downstream in the liquid agent discharge channel 64 together with the water W0 . Since the liquid agent discharge flow path 64 is inclined, it is possible to prevent the liquid agent from stagnating and adhering in the liquid agent discharge flow path 64 to block the liquid agent discharge flow path 64 .

In addition, a part of the liquid agent does not fall on the liquid agent discharge channel 64 but remains while adhering to the periphery of the discharge port 70 . Therefore, when a large amount of water W0 flows through the liquid agent discharge channel 64 , part of the water W1 passes through the connection port 69 and collides with the periphery of the discharge port 70 and the core cylindrical portion 87B. Therefore, it is possible to prevent the liquid agent from staying, adhering, and accumulating for a long time, and clogging the discharge port 70 . In addition, it is possible to prevent the liquid agent from sticking to the periphery of the core tube portion 87B and hindering the movement of the valve 91 housed in the passage 94 .

The features of the present disclosure will be described by putting together the above description.

In the washing machine 1 of this embodiment, the liquid agent discharge flow path 64 is inclined downward from upstream to downstream. The inclination of the liquid agent discharge flow path 64 promotes the flow of the automatically injected liquid agent, thereby preventing the liquid agent from staying and being fixed in the liquid agent discharge flow path 64 for a long time. Therefore, the communication state of the liquid agent discharge channel 64 can be maintained. Furthermore, the inclination of the liquid agent discharge channel 64 also facilitates the flow of water. With the flow of water, the high-viscosity liquid can be transported to the downstream, which further promotes the flow of the liquid.

Also, in the conventional configuration, the gap between the inner bottom surface of the liquid agent discharge flow path and the discharge port of the liquid agent injection device suppresses the flow of the discharge port with respect to the water in the liquid agent discharge flow path. exposed.

With such a structure, in the configuration of the washing machine 1 , the discharge port 70 is formed inside the connection port 69 , and the entire discharge port 70 is exposed to the water flowing through the flow path 95 . Therefore, when the flow rate of the water W0 flowing through the liquid agent discharge channel 64 is large, the water can easily collide with the discharge port 70 and its surroundings. When water hits, the liquid agent adhering to the discharge port 70 and its surroundings is washed away, thereby preventing the liquid agent from sticking.

From the above, it is possible to provide the washing machine 1 capable of suppressing clogging of the liquid agent between the tank 62 storing the liquid agent and the outer tank 3 . [Effect 1]

According to the washing machine 1 in the first embodiment, the following effects can be achieved.

As mentioned above, the washing machine 1 in this embodiment includes the outer tank 3, the storage tank 62A (the first storage tank), the storage tank 62B (the second storage tank), the liquid agent injection device 63A (the first automatic liquid agent injection device), The liquid agent injecting device 63B (second automatic liquid agent injecting device), and the liquid agent discharge channel 64 . The outer tank 3 is elastically supported in the housing 2 . The storage tank 62A can accommodate the liquid agent supplied to the outer tank 3 . The storage tank 62B can accommodate the liquid agent supplied to the outer tank 3 . The liquid agent injecting device 63A is connected to the storage tank 62A, and discharges the liquid agent from the discharge port 70 (first discharge port). The liquid agent injection device 63B is connected to the storage tank 62B, and discharges the liquid agent from the discharge port 70 (second discharge port). The liquid agent discharge channel 64 is connected to the discharge ports 70 of the liquid agent injection devices 63A and 63B, and the liquid agent flows toward the outer tank 3 . The liquid agent discharge channel 64 extends obliquely downward along the outer periphery of the outer tank 3 .

With such a configuration, the liquid agent discharge channel 64 inclined along the outer tank 3 can realize space saving and promote the flow of the liquid agent. Therefore, in the liquid agent discharge channel 64 , it is possible to suppress the residue and fixation of the liquid agent, and it is possible to suppress clogging of the liquid agent discharge channel 64 .

In addition, in the washing machine 1 of this embodiment, the container 62B is arranged outside K1 (along the first direction away from the central axis V0 passing through the bottom 36 of the outer tub 3 ) relative to the container 62A. The liquid agent discharge channel 64 extends downward along the outer side K1.

With such a configuration, the liquid agent discharge channel 64 inclined along the arrangement of the outer tank 3 and the container tank 62 can further enhance space saving.

Moreover, in the washing machine 1 of this embodiment, the depth L2 of the storage tank 62B is larger than the depth L1 of the storage tank 62A.

With such a structure, the depth of the storage tank 62 is increased in accordance with the inclination of the liquid agent discharge flow path 64, and the volume of the storage tank 62 can be ensured, while being in the liquid agent discharge flow path 64, and the flow of water and liquid agent is further promoted. flow. In addition, it is possible to dispose between the container tank 62 and the liquid agent discharge channel 64 to suppress the unevenness of the distance in which the liquid agent flows. Therefore, the uneven impedance to the liquid agent caused by the uneven flow distance of the liquid agent can be suppressed, and the input amount of the liquid agent can be uniformed.

In addition, in the washing machine 1 of this embodiment, the discharge port 70 of the liquid agent injecting device 63B is formed at a lower position than the discharge port 70 of the liquid agent injecting device 63A.

With such a configuration, the liquid agent discharge flow path 64 is inclined along the arrangement of the liquid agent injection device 63, and the uneven distance between the liquid agent injection device 63 and the liquid agent discharge flow path 64 is suppressed. Configuration becomes possible. Therefore, the unevenness of the resistance to the liquid agent can be suppressed, and the input amount of the liquid agent can be uniformized.

In addition, in the washing machine 1 of this embodiment, the liquid agent injecting device 63A and the liquid agent injecting device 63B are disposed above the liquid agent discharge channel 64, and the discharge port 70 is connected to the liquid agent discharge channel 64 from above.

With such a configuration, by arranging the liquid agent injection device 63 above the liquid agent discharge channel 64 , it is possible to prevent the water or liquid agent flowing in the liquid agent discharge channel 64 from flowing back into the liquid agent injection device 63 .

In addition, in the washing machine 1 of the present embodiment, the inflow port 98 of the liquid agent discharge flow path 64 is formed at a position higher than the outflow port 99 of the liquid agent discharge flow path 64 .

With such a configuration, since the liquid agent discharge flow path 64 extends downward from the inflow port 98 to the outflow port 99, and flows from the inflow port 98 to the outflow port 99 by gravity, it is possible to suppress the flow of the liquid agent between the inflow port 98 and the outflow port 99. stagnation between the outflow ports 99.

In addition, in the washing machine 1 of this embodiment, the liquid agent injection device 63A is connected to the back surface of the storage tank 62A, and the liquid agent injection device 63B is connected to the rear surface of the storage tank 62B.

With such a configuration, compared with the case where the liquid agent injecting device 63 is connected to the bottom surface of the container 62, the dimension in the vertical direction Z of the automatic injecting unit 6 can be made smaller. Therefore, even in a limited space, the volume of the storage tank 62 can be made large.

In addition, in the washing machine 1 of this embodiment, the cross-sectional area of the liquid agent discharge flow path 64 increases along the outer side K1 (downstream side).

With such a configuration, on the downstream side of the liquid agent discharge flow path 64, even when the flow rate of the liquid agent increases, the residue and fixation of the liquid agent can be suppressed, and the flow of the liquid agent discharge flow path 64 can be suppressed. clogged. [Effect 2]

The washing machine 1 of this embodiment includes an outer tank 3 , a water supply valve 10 , a container 62 (first container), a liquid agent injection device 63 (first automatic liquid agent injection device), and a liquid agent discharge flow path 64 . The outer tank 3 is elastically supported in the housing 2 . The water supply valve 10 supplies water to the outer tank 3 . The storage tank 62 accommodates the liquid solution supplied to the outer tank 3 . The liquid agent injecting device 63 is connected to the container tank 62 and forms a discharge port 70 (first discharge port) for discharging the liquid agent downward. A connection port 69 (first connection port) communicating with the discharge port 70 is formed in the upper part of the liquid agent discharge channel 64 , and is connected to the water supply valve 10 and the outer tank 3 . The discharge port 70 is formed inside the connection port 69 when viewed in the vertical direction Z (discharge direction of the liquid agent).

With such a configuration, water can flow around the discharge port 70 in the liquid agent discharge channel 64 to wash off the liquid agent adhered to the periphery of the discharge port 70 . Therefore, it is possible to suppress the liquid agent from remaining and sticking around the discharge port 70 , and it is possible to suppress the clogging of the downstream side of the liquid agent injecting device 63 .

In addition, in the washing machine 1 of this embodiment, the liquid agent discharge channel 64 extends downward along the outer side K1 (along the first direction away from the central axis V0 passing through the bottom portion 36 of the outer tank 3 ).

With such a configuration, the discharge port 70 can be cleaned using the liquid agent discharge channel 64 that promotes the flow of the liquid agent by gravity.

In addition, in the washing machine 1 of the present embodiment, the liquid agent injecting device 63 further includes a support portion 87 (first member) forming the discharge port 70 . The support portion 87 has an outer peripheral cylindrical portion 87A, and a central cylindrical portion 87B disposed inside the outer peripheral cylindrical portion 87A and accommodating the valve 91 movable in the vertical direction Z. The discharge port 70 is defined between the outer peripheral cylindrical portion 87A and the central cylindrical portion 87B.

With such a configuration, since the central cylinder portion 87B can also be cleaned, it is possible to suppress the obstruction of the opening and closing movement of the valve 91 due to the fixation of the liquid agent.

Moreover, in the washing machine 1 of this embodiment, the central tube part 87B protrudes from the outer peripheral tube part 87A.

With such a configuration, the central cylindrical portion 87B can be easily cleaned, and the obstruction of the opening and closing movement of the valve due to the fixation of the liquid agent can be further suppressed.

In addition, in the washing machine 1 of the present embodiment, when viewed from the front-rear direction M (direction perpendicular to the discharge direction), the central cylindrical portion 87B crosses the connection port 69, and the discharge port 70 is formed above the connection port 69. .

With such a configuration, the central cylindrical portion 87B becomes easier to clean. On the other hand, since the outer peripheral cylindrical portion 87A does not cross the connection port 69 , the flow of the fluid in the liquid agent discharge channel 64 can be suppressed from being obstructed. In addition, it is possible to suppress backflow of the fluid from the liquid agent discharge channel 64 to the liquid agent injection device 63 through the discharge port 70 .

In addition, the washing machine 1 of this embodiment further includes a storage tank 62B (second storage tank) and a liquid agent injection device 63B (second automatic liquid agent injection device). The storage tank 62B accommodates the liquid solution supplied to the outer tank 3, and is arranged outside K1 with respect to the storage tank 62A. The liquid agent injection device 63B is connected to the storage tank 62B and the liquid agent discharge channel 64 , and discharges the liquid agent downward from the discharge port 70 .

With such a configuration, even when a plurality of liquid agent injection devices 63 are provided, clogging of the downstream side of the liquid agent injection device 63 can be suppressed.

The washing machine 1 of this embodiment includes an outer tank 3 elastically supported in the casing 2, a water supply valve 10 for supplying water to the outer tank 3, and a container 62A (first container) for accommodating the liquid agent supplied to the outer tank 3. tank), connected to the container 62A and forming a liquid agent injecting device 63A (first automatic liquid agent injecting device) that discharges the liquid agent downwardly from the discharge port 70 (the first discharge port), and forming the discharge port 70 on the upper part. The connection port 69A (first connection port) connected to the water supply valve 10 and the liquid agent discharge flow path 64 of the outer tank 3, in the liquid agent discharge flow path 64, the dimension D1 in the front-back direction M (width direction) is larger than The dimension D2 in the vertical direction Z is still larger.

With such a configuration, the discharge port 70 can be easily washed with water.

Also, in the washing machine 1 of the present embodiment, the liquid agent discharge flow path 64 has a main flow path 95 (space) forming the flow path 95 (space) for the automatically injected liquid agent and water, and has a main body 92 with an opening 100 on the side, and a cover The opening 100 is installed on the cover 93 of the main body 92 .

With such a configuration, the liquid agent discharge channel 64 can be manufactured by injection molding. Therefore, the cost of the liquid agent discharge flow path 64 can be suppressed, and the liquid agent discharge flow path 64 can be manufactured using a material with high chemical resistance and moisture absorption resistance.

Also, in the washing machine 1 of this embodiment, the main body 92 is provided with an inflow port 98 (connection port) connected to the water supply valve 10 , a connection port 69A, and an outflow port 99 (connection port) connected to the outer tank 3 .

With such a configuration, it is possible to suppress the positional deviation of parts due to bonding deviation.

In addition, in the washing machine 1 of this embodiment, the inner bottom surface of the liquid agent discharge flow path 64 is constituted by the main body 92 .

With such a configuration, it is possible to suppress the residue of the liquid agent and water.

Moreover, in the washing machine 1 of this embodiment, the main body 92 and the cover 93 are vibration-welded.

With such a configuration, the main body 92 can be made smaller than when an additional structure for fixing the cover 93 to the main body 92 is provided.

Moreover, in the washing machine 1 of this embodiment, the surface P1 (back surface) of the cover material 93 is formed smooth.

With such a configuration, the stability of vibration welding is improved. It can also suppress the residue of the liquid agent.

Moreover, in the washing machine 1 of this embodiment, the cover 93 has the lead wire hook 97 which can hold the lead wire 97A.

With such a configuration, the lead wire hook 97 can fix the lead wire 97A in a state where the lead wire 97A extends downward. By arranging the connector above the lead wire 97 , water flowing along the lead wire 97A can be prevented from reaching the connector of the power unit 71 .

Furthermore, the present disclosure is not limited to the aforementioned implementation forms, and can be implemented in other various forms.

Furthermore, in the embodiment, although it is described that the liquid agent discharge channel 64 is arranged below the liquid agent injecting device 63 and is connected in the vertical direction Z, however, it is not limited thereto. The liquid agent discharge channel 64 may also be disposed above the liquid agent injection device 63 . In addition, the liquid agent discharge channel 64 may be disposed on the side of the liquid agent injection device 63 and connected in the front-rear direction M. FIG.

Furthermore, in the implementation mode, although an example in which the relevant container grooves 62 are arranged along the width direction K is described, it is not limited thereto. For example, the outer tank 3 may be elastically supported to be inclined downward toward the rear side M2 with respect to the installation surface of the housing 2 , and the storage tank 62 may be arranged along the front-rear direction M. In other words, the storage tank 62B may be arranged along the central axis V0 passing through the bottom 36 of the outer tank 3 with respect to the storage tank 62A. At this time, the liquid agent discharge channel 64 is inclined downward toward the rear side M2. Even with such a configuration, the liquid agent discharge channel 64 inclined along the arrangement of the outer tank 3 and the container tank 62 can further enhance space saving.

In addition, although the example in which the discharge port 70 is formed in the upper side of the connection port 69 was demonstrated, it is not limited to this. The discharge port 70 may be arranged at a lower height than the connection port 69 . In other words, the outer peripheral cylindrical portion 87A forming the discharge port 70 may protrude toward the main flow path 95 . With such a configuration, it becomes easy for water to hit the discharge port 70 in the liquid agent discharge channel 64 .

Furthermore, in the embodiment, although the example of welding the main body 92 and the cover 93 by vibration welding is described, it is not limited thereto. At the position where the main body 92 and the cover 93 are joined to each other, the main body 92 and the cover 93 may be joined by other methods as long as the flow line of the liquid agent discharge channel 64 is not crossed. For example, the main body 92 and the cover 93 may be bonded together, or may be airtight with a packing or the like interposed therebetween.

Furthermore, in the embodiment, although it is described that the connecting direction of the container 62 and the liquid agent injecting device 63 is the front-rear direction M, it is not limited thereto. For example, the connection direction between the storage tank 62 and the liquid agent injection device 63 may also be along the vertical direction Z.

Furthermore, for the pump mechanism 73, the power unit 71 and the reduction mechanism 72 may be installed from the center side K2 or the outer side K1. Also, the power unit 71 and the speed reduction mechanism 72 installed from the outer side K1 and the power unit 71 and the speed reduction mechanism 72 installed from the center side K2 may be mixed together.

Although this disclosure fully describes preferred embodiments with reference to the attached drawings, it is clear to those skilled in the art that various modifications and corrections are possible. Such changes or corrections should be understood to be included in the scope of the present invention according to the scope of the appended patent application without departing from it. [Industrial Utilization Possibility]

The washing machine disclosed herein is useful as a household washing machine, a commercial washing machine, or any kind of washing and drying machine (such as a domestic front-loading washing machine) because it can improve the function of the configuration related to liquid agent injection.

1: washing machine 2: Shell 3: Outer groove 4: inner tank 5: Drive unit 6: Automatic input unit 8: Connect the flow path 10: Water supply valve 11: Drain valve 15: washing 20: opening 21: door 31: opening 32: telescopic tube 33: opening 34: Barrel 35: opening 36: bottom 40: Through hole 41: opening 55: Bottom 56: front 57: back 60: cover 61: box body 62: Tank 62A: Tank 62B: Tank 62C: Tank 63: Liquid agent input device 63A: Liquid agent input device 63B: Liquid agent input device 63C: Liquid agent input device 64: liquid agent spit flow path 65: Manual input part 66: Water supply solenoid valve 67: supply flow path 68: opening 69: Connecting port 69A: Connecting port 69B: Connecting port 69C: connection port 70: spit out 71: Power Department 72:Deceleration mechanism 73: pump mechanism 76: Connecting part 76A: Connecting part 76B: Connecting part 76C: connection part 77A: tank connection port 77B: Tank connection port 77C: tank connection port 78: Connecting port of the first box body 79: The second box connection port 81: Liquid agent export 82: put into flow path 83:piston 84: pump cylinder 86: Outlet flow path 87: support part 87A: Outer peripheral cylinder 87B: Central barrel 87C: Rib 89:Seals 91: Support valve 92: Ontology 92A: Rib 92B: Rib 93: cover 94: access 95: This flow path 95A: Expansion part 96: branch flow path 96A: divergent flow path 96B: divergent flow path 96C: divergent flow path 97: Lead hook 97A: Lead 98: Inflow port 99: outlet 100: opening B: inner bottom surface B1: inner bottom surface B2: inner bottom surface B3: inner bottom surface D1: size D2: size K: width direction K1: outside K2: center side L1: Depth L2: Depth L3: Depth M: Front and rear direction M1: front side M2: Rear side P1: surface S1: Liquid S2: Liquid V0: central axis V2: output shaft W0: water W1: water X: coordinate axis Y: Coordinate axis Z: up and down direction Z1: the lower side

Fig. 1 is a schematic sectional view of a washing machine according to an embodiment of the present disclosure.

Fig. 2 is a schematic front view of the washing machine.

Fig. 3 is a perspective view of the automatic feeding unit.

Fig. 4 is a perspective view of the automatic feeding unit.

Fig. 5 is a top view of the automatic input unit.

Fig. 6 is a perspective view of a part of the automatic feeding unit.

Fig. 7 is a perspective view of the box body.

Fig. 8A is an exploded view of a liquid agent discharge channel.

Fig. 8B is a perspective view of the cover.

Fig. 8C is a perspective view of a liquid agent discharge channel.

Fig. 8D is a cross-sectional view of a liquid agent discharge channel.

Fig. 9 is a perspective sectional view of the automatic feeding unit.

Fig. 10 is a perspective view of a container, a liquid agent injecting device, and a liquid agent discharge channel.

Fig. 11 is a schematic sectional view of a liquid agent injecting device.

Fig. 12 is an enlarged view of a liquid agent injection device and a liquid agent discharge channel.

Fig. 13 is a perspective view of a support portion.

Fig. 14 is an enlarged view of the discharge port in a state where the liquid agent injection device is inserted into the liquid agent discharge channel.

Fig. 15 is a diagram of a case showing the flow of water and liquid medicine.

56: front

57: back

61: box body

62A: Tank

62B: Tank

62C: Tank

63A: Liquid agent input device

63B: Liquid agent input device

63C: Liquid agent input device

64: liquid agent spit flow path

65: Manual input part

72:Deceleration mechanism

73: pump mechanism

81: Liquid agent export

K: width direction

K1: outside

K2: center side

M: Front and rear directions

M1: front side

M2: Rear side

W0: water

Z: up and down direction

Claims (9)

A washing machine comprising: The outer groove is elastically supported in the shell; The first tank is used to accommodate the liquid agent supplied to the aforementioned outer tank; The second tank is used to accommodate the liquid agent supplied to the aforementioned outer tank; The first automatic liquid agent injection device is connected to the aforementioned first container, and discharges the liquid agent from the first discharge port; The second automatic liquid agent injection device is connected to the aforementioned second container, and discharges the liquid agent from the second discharge port; and The liquid agent discharge channel is connected to the first discharge port and the second discharge port, and the liquid agent flows to the external tank, The liquid agent discharge channel extends obliquely downward along the outer periphery of the outer tank. The washing machine according to claim 1, wherein the second container is arranged relative to the first container along a first direction away from a central axis passing through the bottom of the outer tank, The liquid agent discharge channel extends downward along the first direction. The washing machine according to claim 1, wherein the outer tank is inclined backward relative to the installation surface of the housing, The second storage tank is arranged along the central axis passing through the bottom of the outer tank with respect to the first storage tank, The liquid agent discharge channel extends downward along the central axis. The washing machine according to any one of claims 1 to 3, wherein the depth of the second container is greater than the depth of the first container. The washing machine according to any one of claims 1 to 4, wherein the second discharge port of the second automatic liquid agent injection device is formed at a lower position than the first discharge port of the first automatic liquid agent injection device. The washing machine according to any one of claims 1 to 5, wherein the first automatic liquid agent injection device and the second automatic liquid agent injection device are arranged above the liquid agent discharge flow path, The first discharge port and the second discharge port are connected to the liquid agent discharge channel from above. The washing machine according to any one of claims 1 to 6, wherein the inlet of the liquid agent discharge channel is formed at a higher position than the outlet of the liquid agent discharge channel. The washing machine according to any one of claims 1 to 7, wherein the first automatic liquid agent injection device is connected to the back of the first container, The aforementioned second automatic liquid agent injection device is connected to the back of the aforementioned second container. The washing machine according to any one of claims 1 to 8, wherein the cross-sectional area of the liquid agent discharge flow path increases toward the downstream side.

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