CN214782716U

CN214782716U - Washing machine

Info

Publication number: CN214782716U
Application number: CN202120345210.XU
Authority: CN
Inventors: 肖魏魏; 邴艾云; 曹明磊; 刘彦峰; 陈安龙; 张士锋
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Refrigerator Co Ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-11-19
Anticipated expiration: 2031-02-07

Abstract

The utility model provides a washing machine, which comprises a box body; the washing barrel is arranged in the box body; the enclosing frame is arranged at the top of the box body, and at least one detergent storage box is arranged in the enclosing frame; and an automatic dispensing system for dispensing detergent into the washing tub, comprising: the water inlet valve is provided with a water inlet and two water outlets; the two negative pressure pipes are respectively connected with the two water outlets of the water inlet valve; and the exchange cavity is communicated with the detergent storage box and the outlet of the negative pressure pipe, the cavity bottom of the exchange cavity is provided with an exchange cavity water outlet, and a labyrinth waterway for separating different types of detergents is arranged in the exchange cavity. The washing machine provided by the utility model can accurately extract and put in various detergents according to the double negative pressure principle; and the detergent can be controlled to flow only in the exchange cavity, and meanwhile, the labyrinth waterway is arranged in the exchange cavity, so that the interval flow of different detergents in the waterway can be effectively controlled, and the washing effect is prevented from being influenced by the mixing of different detergents in the water inlet waterway.

Description

Washing machine

Technical Field

The utility model belongs to the technical field of washing machine, especially, relate to a washing machine.

Background

The traditional washing machine uses the detergent which is separately arranged from the washing machine in the washing process, the washing machine is not provided with a detergent adding device, the detergent can not be automatically added, and the structure can not realize the full-automatic washing control process of the washing machine. With the improvement of the automation of the washing machine, most of the washing machines are provided with a detergent box for placing detergent or/and softener and a water inlet pipeline, and the detergent or/and softener in the detergent box is flushed into a washing barrel through water inlet. However, most of the washing machines with automatic feeding systems in the market adopt the principle of single negative pressure pipe, and feed the detergent quantitatively through the switching valve. After the automatic feeding system with the structure is used for a period of time, the high-viscosity detergent is easily solidified in the conveying pipeline, so that the conveying pipeline is blocked; and the piston cap of the switching valve is easily corroded by special components of the detergent, so that the detergent cannot be put in.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned technical problem, a washing machine is proposed, include:

a box body;

the washing barrel is arranged in the box body;

the enclosing frame is arranged at the top of the box body, and at least one detergent storage box is arranged in the enclosing frame; and

an automatic dispensing system for dispensing detergent into the washing tub, comprising:

the water inlet valve is provided with a water inlet and two water outlets;

the two negative pressure pipes are respectively connected with the two water outlets of the water inlet valve;

and the exchange cavity is communicated with the detergent storage box and the outlet of the negative pressure pipe, the cavity bottom of the exchange cavity is provided with an exchange cavity water outlet, and a labyrinth water path for separating different types of detergents is arranged in the exchange cavity.

The washing machine provided by the utility model improves the automatic feeding system according to the double negative pressure principle, so that the washing machine can accurately extract and feed various detergents; the automatic feeding system in the utility model controls the detergent to flow only in the exchange cavity, thus avoiding the blockage of the high-viscosity detergent to the conveying pipeline and the corrosion to other devices; meanwhile, the inside of the exchange cavity is provided with a labyrinth waterway, so that the interval flow of different detergents in the waterway can be effectively controlled, and the washing effect is prevented from being influenced by the mixing of different detergents in the water inlet waterway; additionally, the utility model provides an automatic dispensing system simple structure helps reducing the occupation space of automatic dispensing system in the washing machine.

According to some embodiments of the application, a flow metering device is connected between the two negative pressure pipes. When extracting the detergent, flow metering device carries out accurate monitoring through the rivers inside flowing through to the volume of extracting of indirect definite detergent, this design is favorable to improving the measurement accuracy of detergent, can effectively avoid adverse effects such as the jam and the corruption of high viscosity detergent to flow metering device simultaneously.

According to some embodiments of the present application, the inlet valve comprises a first outlet valve and a second outlet valve respectively disposed at two outlets thereof. When extracting the detergent, the accessible makes to the independent control of two outlet valves the utility model discloses an automatic dispensing system produces the negative pressure effect, realizes the automatic extraction function of detergent.

According to some embodiments of the present application, the automatic dosing system further comprises a flow direction control valve for controlling the flow of detergent into and out of the detergent storage box, the flow direction control valve being arranged between each of the detergent storage boxes and the exchange chamber. The setting through flow direction control valve can ensure the selectivity extraction to different grade type detergents on the one hand, and on the other hand can also avoid rivers to flow backward and dilute the detergent in the detergent storage box, influence the washing effect.

According to some embodiments of the present application, the maze waterway is formed by a combination of a plurality of independent waterways respectively communicating with different detergent storage cases. The design can ensure that different types of detergents cannot be mixed in the exchange cavity, and the washing effect is prevented from being influenced.

According to some embodiments of the application, the exchange chamber is multilayer cavity, and the equal interval in every layer of cavity is provided with many and blocks the muscle to form the continuous reverse crisscross of rivers direction independent water route. The liquid flow direction in the independent water route in exchange chamber can be standardized to this structure, avoids extracting behind the detergent, lies in the rivers of intracavity and the excessive mixture of detergent, prevents that the detergent from getting into and influencing the measurement accuracy in the flowmeter volume device.

According to some embodiments of the application, the outlets of the independent waterways are provided with open-close control valves for controlling the feeding of the detergent into the washing tub. When the detergent is extracted. The on-off control valve corresponding to the corresponding required detergent is controlled to be closed, so that the extracted detergent is ensured to completely enter the exchange cavity, and the metering precision of the extracted detergent is further ensured.

According to some embodiments of the present application, a liquid level monitoring device for detecting the residual amount of the detergent is disposed in each detergent storage box. The residual amount of the corresponding detergent can be accurately identified by monitoring the detergent liquid level in the detergent storage box, the monitoring capability of the washing machine on the detergent liquid level is improved, and the washing effect is prevented from being influenced by liquid shortage.

According to some embodiments of the present application, the inlet valve, the flow direction control valve, and the on/off control valve are connected to a control system within the washing machine. The control system of the washing machine effectively controls the valve bodies to ensure the realization of automatic water inlet and detergent feeding of the washing machine and the accurate control of the dosage of the detergent.

According to some embodiments of the present application, the washing machine further includes a control panel connected to the control system, the control panel being located on the top of the cabinet, and having a physical key or a touch sensing key provided thereon. The effective control of the starting or washing steps of the washing machine by a user is realized through the setting of the keys.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a top view of the washing machine of the present invention;

FIG. 2 is a diagram showing the position relationship between the automatic dispensing system and the enclosure frame;

FIG. 3 is a schematic structural view of the automatic dispensing system of the present invention;

fig. 4 is a top view of the automatic dispensing system of the present invention;

FIG. 5 is a schematic view of the top cover of the exchange chamber of FIG. 4 with the top cover removed;

fig. 6 is a bottom view of the automatic dispensing system of the present invention;

FIG. 7 is a schematic structural view of FIG. 6 with the bottom cover removed;

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 6;

FIG. 9 is a control diagram of the inlet flow of water according to the present invention;

FIG. 10 is a diagram of a detergent extraction control according to the present invention;

fig. 11 is a water flow control diagram for the detergent of the present invention to be washed into the washing tub.

In the above figures: 1. enclosing a frame; 11. an opening of the enclosure frame; 2. a door cover; 3. an automatic delivery system; 4. a water inlet valve; 41. a first outlet valve; 42. a second outlet valve; 5. a negative pressure tube; 51. a first negative pressure tube; 52. a second negative pressure tube; 6. an exchange chamber; 61. a water outlet of the exchange cavity; 62. blocking ribs; 63. a first independent waterway in the cavity; 64. a second independent waterway in the cavity; 71. a first detergent reservoir; 711. a first detergent addition port; 712. a first liquid extraction port; 72. a second detergent reservoir; 721. a second detergent addition port; 722. a second liquid extraction port; 8. a flow metering device; 91. a first flow control valve; 92. a second flow direction control valve; 93. a first on-off control valve; 94. a second on/off control valve; 10. a liquid level monitoring device.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Hereinafter, embodiments according to the present application will be described in detail with reference to the accompanying drawings.

The washing machine according to an embodiment of the present disclosure may include: a box body forming the appearance; a washing tub disposed in the cabinet and storing washing water to wash the laundry; the washing machine according to the embodiment of the present disclosure further includes: the washing machine comprises a power system for providing power for the rotation of the washing barrel, a control system for controlling the work of the washing machine and an automatic feeding system integrating water inlet and detergent feeding.

Fig. 1 is a top view of the washing machine of the present invention; fig. 2 is a position relationship diagram of the middle automatic dispensing system and the enclosure frame.

In the embodiment, the bottom end of the box body is provided with the base, and the height of the washing machine can be increased by the base, so that clothes can be conveniently taken or the whole machine can be conveniently moved. In the present application, the pedestals may be provided as short pedestals having a height of 20-70mm or as high pedestals having a height of 70mm or more.

As shown in fig. 1, the top end of the cabinet is provided with an enclosure frame 1, the enclosure frame 1 has a hollow enclosure frame opening 11, and a user can place clothes into the washing tub from the enclosure frame opening 11 or take out the clothes from the washing tub through the enclosure frame opening 11. The matching mode of the enclosure frame 1 and the box body can be an embedded mode, a screw fastening mode, a buckling mode, a riveting mode or other related modes; the height of the enclosure frame 1 may be a short enclosure frame with a height of 20-70mm, or a high enclosure frame with a height of more than 70mm, which is not specifically limited in the present application.

The top end of the enclosure frame 1 is connected with a door cover 2, and the door cover 2 can rotate relative to the enclosure frame 1 so as to open or cover an enclosure frame opening 11 on the enclosure frame 1; specifically, the rear end of the door 2 is rotatably connected to the enclosure frame 1 (the side of the washing machine facing the user is the front end, and the opposite side is the rear end during the operation of the washing machine by the user), the enclosure frame opening 11 is exposed by turning up the front end of the door 2, and the enclosure frame opening 11 is covered by moving down the door 2. Specifically, the door cover 2 can be of an integrated type or a plurality of structures such as a hinge type or a sectional type; the door 2 may be opened in a manner of opening or in a manner of sliding or rotating, which is not limited in this application.

The top front end of the enclosure frame 1 can be provided with a control panel, the control panel is connected with a control system in the washing machine and used for controlling the starting or washing steps of the washing machine by a user, and in the application, cases on the control panel can be physical keys and can also be in various key modes such as touch induction.

As shown in fig. 2, in the present embodiment, an automatic dispensing system 3 is provided in the enclosure frame 1, and the automatic dispensing system 3 is located at the rear end inside the enclosure frame 1.

In the embodiment of the disclosure, at least one detergent liquid storage box is arranged in the surrounding frame 1 or below the surrounding frame 1, different types of detergents can be placed in different detergent liquid storage boxes, and in the washing process of the washing machine, the detergents in the detergent liquid storage boxes can be quantitatively pumped into the washing barrel through the control water path as required for cleaning clothes.

The top of the box body is also provided with a water inlet which is connected with the washing barrel through a water inlet waterway in the washing machine and used for feeding water into the washing barrel.

According to the embodiment of the present disclosure, the automatic dispensing system 3 includes a water inlet valve 4 disposed at an inlet of the washing machine, and a negative pressure pipe 5 connected to an outlet of the water inlet valve 4. The inlet valve 4 is a one-in two-out inlet valve and includes a first outlet valve 41 and a second outlet valve 42. The water inlet position of the water inlet valve 4 is connected with the water inlet of the washing machine, and two water outlets of the water inlet valve are connected with a negative pressure pipe 5, wherein a first negative pressure pipe 51 is connected with the first outlet valve 41; connected to the second outlet valve 42 is a second negative pressure line 52. The first negative pressure pipe 51 and the second negative pressure pipe 52 are connected with the exchange cavity 6 through connecting pipes, and water flow passes through the outlet of the negative pressure pipe 5 to generate negative pressure, so that the detergent is automatically extracted by utilizing the negative pressure effect in the embodiment.

The automatic dispensing system 3 in this embodiment further includes two detergent liquid storage boxes, as shown in fig. 1, a first detergent liquid storage box 71 and a second detergent liquid storage box 72, which are disposed in the enclosure frame 1. The first detergent reservoir 71 has a first detergent addition port 711 at the top thereof, and the second detergent reservoir 72 has a second detergent addition port 721 at the top thereof. In the present embodiment, the first detergent addition port 711 and the second detergent addition port 721 are both located at the rear end of the enclosure frame 1, and a user can add detergent with different washing functions into the corresponding detergent storage boxes through different detergent addition ports.

Each detergent liquid storage box is provided with at least one liquid suction port, in the embodiment, the box bottom of the first detergent liquid storage box 71 is provided with a first liquid suction port 712, the box bottom of the second detergent liquid storage box 72 is provided with a second liquid suction port 722, and detergent can enter the exchange cavity 6 through the first liquid suction port 712 or the second liquid suction port 722 under the action of negative pressure and then is flushed into the washing barrel by inflow water for cleaning clothes.

Further, the automatic dispensing system 3 in this embodiment further includes a flow metering device 8 connected between the two negative pressure pipes 5, and two inlets of the flow metering device 8 are respectively connected to the two negative pressure pipes 5, so as to accurately meter the flow rate of the water flow discharged from the exchange cavity 6 when the detergent is extracted by using the negative pressure effect, thereby determining and controlling the extraction amount of the detergent.

Because the viscosity of the detergent is high, the detergent with high viscosity is easy to be solidified in the conveying pipeline, so that the conveying pipeline is blocked; the metering device is adopted to directly meter the high-viscosity detergent, so that the metering precision of the metering device is greatly reduced; highly viscous detergents, after being sucked directly into the metering device, are also very prone to damage to the metering device. Consequently for avoiding above defect, the utility model provides an automatic dispensing system makes the flow through of flow metering device 8 be rivers through addding exchange chamber 6, and not the detergent, the accessible measurement flows through the indirect detergent flow of confirming the extraction of the rivers flow of flow metering device 8, improves the precision of getting of detergent, effectively avoids the influence of high viscosity detergent to metering device and pipeline simultaneously.

The automatic dispensing system 3 of the present embodiment mainly realizes an automatic detergent extracting function by a negative pressure effect generated by water flowing through a negative pressure pipe, and the structure and the control process of the automatic dispensing system 3 of the present embodiment will be described in detail with reference to the accompanying drawings.

FIG. 3 is a schematic structural view of the automatic dispensing system of the present invention; fig. 4 is a top view of the automatic dispensing system of the present invention; FIG. 5 is a schematic view of the top cover of the exchange chamber of FIG. 4 with the top cover removed; fig. 6 is a bottom view of the automatic dispensing system of the present invention; FIG. 7 is a schematic structural view of FIG. 6 with the bottom cover removed; fig. 8 is a cross-sectional view taken along line a-a of fig. 6.

According to the present embodiment of the present disclosure, as shown in fig. 3 to 6, the first drawing port 712 of the first detergent reservoir 71 and the second drawing port 722 of the second detergent reservoir 72 are respectively connected to the opening at the bottom of the exchange chamber 6 through connecting water pipes; meanwhile, the side wall of the exchange cavity 6 is also provided with two openings which are respectively connected with the two negative pressure pipes 5; the bottom of the exchange cavity 6 is also provided with an exchange cavity water outlet 61, and the exchange cavity water outlet 61 is connected with the washing barrel through a water outlet pipe and used for supplying water into the washing barrel.

Further, be equipped with the maze water route of control detergent trend in the exchange chamber 6, the maze water route is formed by many independent water routes combinations that are linked together with different detergent storage boxes respectively, and the setting in maze water route is used for the detergent flow direction of independent control different grade type for multiple detergent can not mix in the water route each other, avoids influencing the effect of different detergents.

Specifically, as shown in fig. 5, 7 and 8, corresponding to the two detergent storage boxes in the present embodiment, the exchange chamber 6 is divided into an upper layer and a lower layer, and the blocking ribs 62 are arranged in each layer of the exchange chamber 6 at intervals, so that independent water paths with continuous and reverse staggered water flow directions are formed in the exchange chamber 6. In the present embodiment, two independent water paths are formed in the exchange chamber 6, and the two independent water paths are arranged in one-to-one correspondence with the two detergent storage boxes in the present embodiment. It should be understood that the present application is not limited to the particular number of independent water paths within the exchange chamber 6, as long as it is capable of one-to-one correspondence with different detergent reservoirs within the washing machine.

Specifically, as shown in fig. 5, the exchange cavity 6 of the present embodiment includes an intra-cavity first independent water path 63 located at the top of the cavity, one end of the intra-cavity first independent water path 63 is connected to the first liquid suction port 712 of the first detergent liquid storage box 71, the other end is connected to the first negative pressure pipe 51, and the water flow direction in the intra-cavity first independent water path 63 is continuously and reversely staggered to reduce the water flow cross-sectional area of the intra-cavity first independent water path 63 in the exchange cavity 6, so as to regulate the liquid flow direction in the intra-cavity first independent water path 63, and avoid excessive mixing of the water flow in the intra-cavity first independent water path 63 and the detergent when the detergent is extracted, thereby preventing the extracted detergent from entering the flow metering device 8 to affect the metering accuracy.

As shown in fig. 7, the exchange cavity 6 of the present embodiment further includes an intra-cavity second independent water path 64 located at the bottom of the cavity, one end of the intra-cavity second independent water path 64 is connected to the second liquid suction port 722 of the second detergent liquid storage box 72, the other end is connected to the second negative pressure pipe 52, and the water flow direction in the intra-cavity second independent water path 64 is also continuously and reversely arranged in a staggered manner, so as to reduce the water flow cross-sectional area of the intra-cavity second independent water path 64 in the exchange cavity 6, standardize the liquid flow direction in the intra-cavity second independent water path 64, and avoid excessive mixing of the water flow in the intra-cavity second independent water path 64 and the detergent when the detergent is extracted, so as to prevent the extracted detergent from entering the flow metering device 8 to affect the metering accuracy.

Meanwhile, two control water paths in the exchange cavity 6 are communicated with the exchange cavity water outlet 61 of the exchange cavity 6, so that the function of water inlet into the washing barrel is realized.

Further, the automatic dispensing system 3 of the present embodiment further includes a flow direction control valve disposed between the detergent storage box and the exchange chamber 6, and a closing/opening control valve disposed at different independent waterway outlet positions in the exchange chamber 6.

The flow direction control valve is used for controlling the detergent to enter and exit the exchange cavity 6 and is only opened when the detergent needs to be extracted so that the detergent can smoothly enter the exchange cavity 6, and the flow direction control valve is closed in the rest time so as to prevent water flow from flowing backwards and only influencing the concentration of the detergent in the detergent storage box. Specifically, the number of the flow direction control valves and the detergent storage boxes in the present embodiment is also two, and the first flow direction control valve 91 is correspondingly disposed between the first detergent storage box 71 and the first independent water channel 63 in the chamber in the exchange chamber 6, and is used for controlling the quantitative extraction of the detergent in the first detergent storage box 71; a second flow control valve 92 is disposed between the second detergent storage box 72 and the second independent water path 64 in the chamber of the exchange chamber 6, for controlling the quantitative pumping of the detergent in the second detergent storage box 72.

The on-off control valve is used for controlling water flow or washing water in the exchange cavity 6 to enter the washing barrel, and is selectively closed only when the detergent is extracted, so that the extracted detergent is enabled to completely enter the exchange cavity 6, and accurate metering of the amount of the detergent by the flow metering device 8 is further ensured. Specifically, the number of the on-off control valves and the detergent storage boxes in the present embodiment is also two, and the first on-off control valve 93 is disposed at the outlet position of the first water path 62 in the exchange cavity 6, and is used for ensuring that all the detergent in the pumped first detergent storage box 71 enters the exchange cavity 6, so as to ensure that the flow metering device 8 accurately meters the taken amount of the detergent; a second open/close control valve 94 is disposed at an outlet of the second water path 63 in the exchange chamber 6 for ensuring that all the detergent in the pumped second detergent storage box 72 enters the exchange chamber 6, thereby ensuring accurate metering of the detergent by the flow metering device 8.

Furthermore, the liquid level monitoring devices 10 are arranged in the first detergent liquid storage box 71 and the second detergent liquid storage box 72, the liquid level monitoring devices 10 are associated with a control system of the washing machine, the residual amount of the detergent in the liquid storage boxes can be accurately identified, and the monitoring capability of the washing machine on the liquid level of the detergent is improved.

The water inlet valve 4, the first outlet valve 41, the second outlet valve 42, the first flow direction control valve 91, the second flow direction control valve 92, the first open-close control valve 93 and the second open-close control valve 94 in the embodiment are all connected with a control system of the washing machine, so that the valve bodies are effectively controlled in the water inlet process of the washing machine.

FIG. 9 is a control diagram of the inlet flow of water according to the present invention; FIG. 10 is a diagram of a detergent extraction control according to the present invention; fig. 11 is a water flow control diagram for the detergent of the present invention to be washed into the washing tub.

As shown in fig. 9, when water is supplied to the washing machine, the first outlet valve 41 and the second outlet valve 42 of the water inlet valve 4 are opened at the same time, two water flows flow into the exchange cavity 6 through the first negative pressure pipe 51 and the second negative pressure pipe 52, at this time, two flow direction control valves for controlling the detergent to flow out of the detergent storage box are both closed, the detergent is not pumped, two open/close control valves for controlling the water flow to flow into the washing tub are both opened, and the water flow flows out of the exchange cavity 6 and then flows into the washing tub.

When one of the detergents needs to be pumped, taking the detergent in the second detergent storage box 72 as an example, as shown in fig. 10, at this time, the second outlet valve 42 is closed, the water flowing out from the water inlet valve 4 only passes through the first negative pressure pipe 51, negative pressure is generated at the outlet of the first negative pressure pipe 51, the generated negative pressure is transmitted into the second independent water channel 64 in the cavity at the bottom of the exchange cavity 6 through the flow metering device 8 and the second negative pressure pipe 52, at this time, the second flow direction control valve 92 for controlling the detergent to flow out of the second detergent storage box 72 is opened, and the second open-close control valve 94 is closed. Because the pressure in the second detergent storage box 72 is greater than the pressure in the second independent water path 64 in the bottom cavity of the exchange cavity 6, the automatic dosing system pumps out the detergent in the second detergent storage box 72 under the action of pressure difference, and the detergent flows into the second independent water path 64 in the bottom cavity of the exchange cavity 6 through the inlet of the exchange cavity 6, at this time, the water flow entering the second independent water path 64 in the bottom cavity of the exchange cavity 6 in the previous step is squeezed out, the squeezed water flow passes through the flow metering device 8, the flow metering device 8 can calculate the amount of the water flow passing through the process, and further the amount of the detergent entering the exchange cavity 6 can be indirectly obtained, so that the dosing amount of the detergent once pumped and the number of times of required for dosing to a target value are calculated, and the accurate dosing of the detergent is realized.

After the automatic dispensing system 3 extracts the detergent, the process of flushing the detergent drawn into the exchange cavity 6 into the washing tub is shown in fig. 11, at this time, the second outlet valve 42 closed in the previous step needs to be opened, so that the inlet water flows into the exchange cavity 6 through the first negative pressure pipe 51 and the second negative pressure pipe 52 in two ways; meanwhile, the second flow direction control valve 92 of the second detergent storage box 72 is closed, and the second open/close control valve 94 for controlling the water flow to flow into the washing tub is opened, so that the water flow flushes the detergent pumped into the exchange cavity 6 into the washing tub, and the automatic laundry detergent feeding function is completed.

The washing machine provided by the utility model improves the automatic feeding system according to the double negative pressure principle, so that the washing machine can accurately and automatically feed various detergents; meanwhile, the automatic feeding system adopts the exchange cavity with the labyrinth water path, so that the interval flow of different types of detergents in the water path can be effectively controlled, the influence of the mixing of different types of detergents in the water inlet water path on the self effect of the detergents is avoided, and the exchange cavity has a simple structure, thereby being beneficial to reducing the occupied space of the automatic feeding system in the washing machine; additionally, the utility model discloses in what flow metering device flowed through is water rather than detergent, can avoid the influence of high viscosity detergent to flow metering device, ensure the accuracy that the detergent got the volume.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. A washing machine, characterized by comprising:

a box body;

the washing barrel is arranged in the box body;

the water inlet valve is provided with a water inlet and two water outlets;

2. The washing machine as claimed in claim 1, wherein: and a flow metering device is connected between the two negative pressure pipes.

3. The washing machine as claimed in claim 1, wherein: the water inlet valve comprises a first outlet valve and a second outlet valve which are respectively arranged at two outlets of the water inlet valve.

4. The washing machine as claimed in claim 1, wherein: the automatic feeding system also comprises a flow direction control valve for controlling the flowing of the detergent in and out of the detergent storage boxes, and the flow direction control valve is arranged between each detergent storage box and the exchange cavity.

5. The washing machine as claimed in claim 4, wherein: the maze waterway is formed by combining a plurality of independent waterways respectively communicated with different detergent storage boxes.

6. The washing machine as claimed in claim 5, wherein: the exchange chamber is multilayer cavity, and the equal interval in every layer of cavity is provided with many and blocks the muscle to form the continuous reverse crisscross of rivers direction independent water route.

7. The washing machine as claimed in claim 5, wherein: and the outlets of the independent water paths are respectively provided with a closed control valve for controlling the feeding of the detergent into the washing barrel.

8. The washing machine as claimed in claim 1, wherein: and liquid level monitoring devices for detecting the residual amount of the detergent are arranged in the detergent storage boxes.

9. The washing machine as claimed in claim 7, wherein: the water inlet valve, the flow direction control valve and the open-close control valve are all connected with a control system in the washing machine.

10. A washing machine as claimed in claim 9, wherein: the washing machine further comprises a control panel connected with the control system, the control panel is located on the top of the box body, and a physical key or a touch induction key is arranged on the control panel.