Drainage system and dish washing machine

Abstract

The utility model discloses a drainage system and a dish-washing machine, the dish-washing machine at least has a drainage mode, a residual water removing mode and a flushing mode, the drainage system comprises a water cup, a drainage assembly and a water removing assembly, and the bottom of the water cup is provided with a first drainage port and a second drainage port; the height position of the second water outlet is not higher than that of the first water outlet; the water drainage assembly is communicated with the first water drainage opening so as to be used for draining washing water in the water cup in the water drainage mode; the water removal assembly is communicated with the second water outlet; wherein in the residual water removing mode, the water removing assembly is used for sucking out washing water which is not drained by the water draining assembly from the second water draining opening, and in the flushing mode, the water removing assembly is used for flushing the second water draining opening through hydraulic power. According to the technical scheme, residual water in the water cup can be effectively drained, and therefore the cleanliness of the interior of the dish washing machine is improved.

Description

Technical Field

[0001] This application relates to the technical field of dishwashers, and particularly to a drainage system and a dishwasher. Background Art

[0002] A dishwasher is a device for automatically cleaning tableware such as bowls, chopsticks, plates, dishes, knives, and forks. Traditional dishwashers usually have a dedicated detergent dispensing system for storing detergents and transporting them to the washing cavity of the dishwasher body to wash the tableware with the detergents.

[0003] During the washing process of the dishwasher, the washing water is stored in a water cup. The dishwasher uses a washing pump to generate water pressure to suck the washing water from the water cup and flushes the tableware in a way that the spray arm rotates and sprays. When the dishwasher finishes washing the dishes, it is necessary to drain the washing water in the water cup. In the related art, after draining the washing water, there is still some residual washing water left in the water cup. The existence of the residual washing water will cause moisture return and bacteria growth, resulting in peculiar smells, and will also cause the tableware to be re - contaminated after a certain period of time, making it impossible to safely store the tableware, which not only affects the user experience but also poses potential hygiene and safety hazards. Summary of the Utility Model

[0004] Embodiments of this application provide a drainage system and a dishwasher, aiming to effectively drain the residual water in the water cup, thereby improving the cleanliness inside the dishwasher.

[0005] In a first aspect, embodiments of this application provide a drainage system applied to a dishwasher. The dishwasher has at least a drainage mode, a residual - water removal mode, and a flushing mode. The drainage system includes a water cup, a drainage component, and a water - removing component. The bottom of the water cup is provided with a first drainage port and a second drainage port, and the height position of the second drainage port is not higher than that of the first drainage port. The drainage component is connected to the first drainage port and is used to drain the washing water in the water cup in the drainage mode. The water - removing component is connected to the second drainage port. Wherein, in the residual - water removal mode, the water - removing component is used to suck out the washing water that the drainage component has not completely drained from the second drainage port, and in the flushing mode, the water - removing component is used to hydraulically flush the second drainage port.

[0006] In some of these embodiments, the water - removing component includes a water delivery pipeline and a forward - reverse pump. The water delivery pipeline is connected to the second drainage port, and the forward - reverse pump is arranged on the water delivery pipeline.

[0007] In the residual - water removal mode, the forward - reverse pump rotates forward to drive a negative pressure to be formed in the water delivery pipeline to suck the residual washing water from the second drainage port.

[0008] In the flushing mode, the forward and reverse pump rotates in reverse to drive the water flow in the water delivery pipeline to flow towards the second drain outlet, so as to perform hydraulic flushing on the second drain outlet.

[0009] In some embodiments, the drainage assembly includes a drainage pump and a drainage pipe. The inlet of the drainage pump is communicated with the first drain outlet, one end of the drainage pipe is communicated with the outlet of the drainage pump, and the water delivery pipeline is communicated with the drainage pipe;

[0010] In the flushing mode, the forward and reverse pump rotates in reverse to drive the water flow in the drainage pipe to flow through the water flow in the water delivery pipeline towards the second drain outlet, so as to perform hydraulic flushing on the second drain outlet.

[0011] In some embodiments, a control valve is provided on the drainage pipe, and the control valve controls the connection or disconnection of the drainage pipe.

[0012] In some embodiments, the drainage system includes a one-way membrane, which is arranged between the outlet of the drainage pipe and the outlet of the drainage pump. The one-way membrane is used to allow the washing water at the outlet of the drainage pump to enter the drainage pipe and block the water flow in the drainage pipe from flowing back to the drainage pump.

[0013] In some embodiments, the water cup includes a cup bottom wall, and the cup bottom wall includes a slope portion, and the second drain outlet is opened on the slope portion;

[0014] Alternatively, the water cup includes a cup side wall and a cup bottom wall. The cup side wall includes an inclined portion connecting the cup bottom wall. The second drain outlet is opened on the inclined portion and is closer to the lowest point of the inclined portion than the highest point of the inclined portion. Alternatively, the second drain outlet is opened on the cup bottom wall, and the second drain outlet is opened at a position on the cup bottom wall adjacent to the lowest point of the inclined portion.

[0015] In some embodiments, the second drain outlet is arranged at the lowest point of the bottom of the water cup.

[0016] In some embodiments, a plurality of through holes are opened on the bottom of the water cup, and the plurality of through holes form the second drain outlet.

[0017] In some embodiments, the water cup includes a cup body and a tee pipe. The tee pipe includes a first interface, a second interface and a third interface. The first interface is communicated with the bottom of the cup body, the drainage assembly is communicated with the second interface, and the water removing assembly is communicated with the third interface;

[0018] Wherein, the first drain outlet is configured as the first interface, and the second drain outlet is configured as the third interface.

[0019] In a second aspect, an embodiment of the present application provides a dishwasher, which includes the above-mentioned drainage system.

[0020] Based on the drainage system and the dishwasher of the embodiments of the present application, after the drainage component of the dishwasher discharges most of the washing water in the water cup through the first drainage port, at this time, in the residual water removal mode, since the height position of the second drainage port is not higher than that of the first drainage port, the water removal component can suck out the washing water not completely drained by the drainage component from the second drainage port, thereby ensuring that the washing water in the water cup is completely drained. This improves the cleanliness inside the dishwasher, and effectively reduces problems such as mildew, bacterial growth, and bad odor that may be caused by residual washing water, fundamentally solving the technical problem that the washing water in the water cup of the dishwasher in the prior art cannot be completely drained, providing a more hygienic and healthy dishwashing experience for users, and at the same time extending the service life of the dishwasher.

[0021] In addition, the water removal component can also generate sufficient hydraulic force to wash the second drainage port in the flushing mode, effectively dredging the dirt or impurities accumulated at the second drainage port due to long-term use, significantly reducing the risk of blockage of the second drainage port. This design ensures the smoothness of sucking the residual washing water, further improving the drainage effect and making the drainage performance of the dishwasher more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 Schematic structural diagram of an embodiment of the dishwasher of the present application;

[0024] Figure 2 Schematic structural diagram of an embodiment of the water cup of the dishwasher of the present application;

[0025] Figure 3 Schematic structural diagram of another embodiment of the water cup of the dishwasher of the present application;

[0026] Figure 4 Schematic structural diagram of yet another embodiment of the water cup of the dishwasher of the present application;

[0027] Figure 5 Schematic structural diagram of still another embodiment of the water cup of the dishwasher of the present application.

[0028] Explanation of the reference numerals in the drawings:

[0029] 100, Dishwasher; 100, Drainage system; 10, Water cup; 11, First drain outlet; 12, Second drain outlet; 13, Bottom wall of the cup; 131, Slope; 14, Side wall of the cup; 15, Cup body; 16, Three-way pipe; 161, First interface; 162, Second interface; 163, Third interface; 20, Drainage component; 21, Drainage pump; 22, Drain pipe; 23, Breather; 30, Water removal component; 31, Water delivery pipeline; 32, Forward and reverse pump; 40, Washing pump; 50, Control valve; 60, Check membrane; 200, Inner tank; 201, Spray arm.

[0030] The realization of the purpose of this application, functional features and advantages will be further described in conjunction with embodiments with reference to the accompanying drawings. Detailed implementation manners

[0031] To make the purpose, technical solutions and advantages of this application clearer, the following will further describe the embodiments of this application in detail in conjunction with the accompanying drawings.

[0032] When the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with this application. On the contrary, they are only examples of devices and methods that are consistent with some aspects of this application as detailed in the appended claims.

[0033] In the description of this application, it should be understood that terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0035] A dishwasher is a device for automatically cleaning tableware such as bowls, chopsticks, plates, dishes, knives, forks, etc. Traditional dishwashers usually have a dedicated detergent dispensing system. The detergent is stored through the dispensing system and delivered to the washing cavity of the dishwasher body to wash the tableware with the detergent.

[0036] In the first aspect of the present application, a dishwasher 100 is proposed for cleaning tableware. The dishwasher 100 includes a housing, an inner container 200, and a drainage system 100.

[0037] The housing, as the exterior component of the dishwasher 100, is used to protect the internal components of the dishwasher 100. The housing can be in a square configuration. The housing can be made of metal so that the dishwasher 100 itself can have higher strength and be more durable. Of course, the housing can also be made of plastic so that the housing has the advantage of being lighter in weight. The embodiments of the present application do not limit this.

[0038] The inner container 200 is arranged inside the housing. The inner container 200 has a washing cavity. A bowl basket is provided inside the inner container 200 for placing the tableware to be cleaned. A rotatable spray arm 201 is provided inside the inner container 200. The spray arm 201 is either above the bowl basket or below the bowl basket. The spray arm 201 is communicated with the drainage system 100. The inner container 200 delivers the water body to the spray arm 201 through the drainage system 100, and then the water body is sprayed out by the rotation of the spray arm 201 to wash the tableware.

[0039] In the second aspect of the present application, a drainage system 100 is proposed. The drainage system 100 includes a washing pump 40, a water cup 10, and a drainage component 20.

[0040] Among them, the dishwasher 100 has a washing mode and a drainage mode. In the washing mode, the water cup 10 is communicated with the spray arm 201 through the washing pump 40, and the tableware is washed through the spray arm 201. The washing water is sucked from the water cup 10 by the washing pump 40 and delivered to the spray arm 201. The water cup 10 is used to store the washing water for rinsing the tableware on the one hand, and on the other hand, the water cup 10 is also used to collect the washing water generated after washing the tableware. When the washing of the tableware is completed, by starting the drainage mode, the washing water is collected through the water cup 10 and discharged through the drainage component 20.

[0041] In the related art, after the drainage of the washing water, there is still some residual washing water in the water cup 10. The existence of the residual washing water will cause moisture return and bacterial growth, and then generate peculiar smells. After a certain period of time, it will also cause re - contamination of the tableware, making it impossible to safely store the tableware, which not only affects the user experience but also poses a hygiene and safety hazard.

[0042] To solve the above problems, please refer to Figure 1, the dishwasher 100 of the present application further has a residual water removal mode and a flushing mode, and the drainage system 100 of the present application further includes a water removal component 30.

[0043] The bottom of the water cup 10 is provided with a first drain port 11 and a second drain port 12, and the height position of the second drain port 12 is not higher than the height position of the first drain port 11. The drainage component 20 is tightly connected to the first drain port 11 to maintain communication, and is used to drain the washing water in the water cup 10 in the drainage mode. The water cup 10 is generally conical, so that the washing water gathers at the bottom of the water cup 10 under the influence of gravity, so that more washing water can be discharged through the drainage component 20.

[0044] The water removal component 30 is communicated with the second drain port 12. The first drain port 11 and the second drain port 12 can be protruded outward to facilitate communication with the drainage component 20 and the water removal component 30. After the drainage mode is completed, the dishwasher 100 can start the residual water removal mode. The water removal component 30 can suck out the washing water that may remain at the bottom of the water cup 10 or is not completely discharged by the drainage component 20 from the second drain port 12 through strong suction. This design effectively avoids the problem of residual washing water and ensures the internal dryness and cleanliness of the dishwasher 100. In addition, the dishwasher 100 can start the flushing mode, and the water removal component 30 becomes a powerful flushing tool. It uses the principle of hydraulic flushing to deeply clean the second drain port 12. This flushing can not only remove the residues that may adhere to the second drain port 12, prevent the blockage of the second drain port 12, and ensure that the process of removing the residual washing water in the dishwasher 100 remains unobstructed.

[0045] Based on the drainage system 100 and the dishwasher 100 of the embodiments of the present application, after the drainage component 20 of the dishwasher 100 discharges most of the washing water in the water cup 10 through the first drain port 11, in the residual water removal mode, since the height position of the second drain port 12 is not higher than the height position of the first drain port 11. It can be understood that the first drain port 11 can be at the same height as the second drain port 12, such as both the first drain port 11 and the second drain port 12 are provided at the bottom of the water cup 10, or the second drain port 12 is arranged lower than the first drain port 11, such as the second drain port 12 is opened at the bottom of the water cup 10 and the first drain port 11 is opened on the side wall of the water cup 10. The water removal component 30 can suck out the washing water that the drainage component 20 has not drained completely from the second drain port 12, so as to ensure that the washing water in the water cup 10 is completely drained. Thereby, the cleanliness inside the dishwasher 100 is improved, and the problems such as mildew, bacteria breeding and bad smell that may be caused by residual washing water are effectively reduced, fundamentally solving the technical problem that the washing water in the water cup 10 of the existing dishwasher 100 cannot be completely drained, providing a more hygienic and healthy dishwashing experience for users, and at the same time extending the service life of the dishwasher 100.

[0046] Referring to Figure 1 , in some structural forms, the water removal component 30 includes a water delivery pipeline 31 and a forward and reverse pump 32. The water delivery pipeline 31 is communicated with the second drain port 12 to ensure the smooth flow of the washing water. The forward and reverse pump 32 is arranged on the water delivery pipeline 31. It can be understood that the forward and reverse pump 32 includes a motor and a pump body, and the flow direction of the pump body is changed by switching the positive and negative poles of the motor. In the residual water removal mode, the forward and reverse pump 32 rotates forward to drive a negative pressure to be formed in the water delivery pipeline 31 to suck the residual washing water from the second drain port 12. In this way, by forming a strong suction force in the water delivery pipeline 31, the residual washing water can be sucked out through the second drain port 12. This negative pressure technology can ensure that the water remaining in the water delivery pipeline 31 and the second drain port 12 during the washing process is completely removed, avoiding the problems of water accumulation and bacterial growth. In the flushing mode, the forward and reverse pump 32 rotates reversely to drive the water flow in the water delivery pipeline 31 to flow towards the second drain port 12 to perform hydraulic flushing on the second drain port 12. This hydraulic flushing method is not only efficient, but also energy-saving and environment-friendly, reducing the additional cleaning and maintenance costs. In this way, the above functions of residual water removal and flushing can be realized by sharing the same water delivery pipeline 31 and through different working modes of the forward and reverse pump 32, making the entire drainage system 100 more compact and efficient. At the same time, this design also reduces the manufacturing cost and installation difficulty, and improves the reliability and stability of the drainage system 100. It should be noted that the water removal component 30 is conducted and used in the residual water removal mode and the flushing mode by setting two independent pipelines. This design enables the two pipelines to work independently without interference, and is also convenient for subsequent maintenance and replacement.

[0047] Furthermore, the drainage component 20 includes a drainage pump 21 and a drainage pipe 22. The inlet of the drainage pump 21 is communicated with the first drain port 11, one end of the drainage pipe 22 is communicated with the outlet of the drainage pump 21. The specific types of the drainage pump 21 include, but are not limited to, impeller pumps, diaphragm pumps, vacuum pumps and other drainage pumps 21 with similar functions. These pumps have their own advantages. For example, impeller pumps are famous for their high efficiency and large flow rate, diaphragm pumps are characterized by strong self-priming ability and can handle liquids containing impurities, and vacuum pumps can create a negative pressure environment in a specific environment to achieve an efficient drainage effect. In addition, the drainage component 20 further includes a breather 23 arranged on the drainage pipe 22. The breather 23 is used to lead out the internal hot air in the dishwasher 100, prevent heat from accumulating in the dishwashing cavity, and also has the functions of water inlet shunting and storage.

[0048] To optimize the circulation and reuse of water flow, it is connected to the drain pipe 22 through the water delivery pipe 31, realizing the effective transfer of washing water between different pipes. In the flushing mode, the positive and reverse pump 32 rotates in reverse to drive the water flow in the drain pipe 22 to flow through the water delivery pipe 31 to the second drain port 12 for hydraulic flushing of the second drain port 12. This flushing method not only effectively cleans the second drain port 12, avoiding problems such as blockage and bacterial growth, but also realizes the reuse of washing water without the need to introduce new water sources additionally, saving water resources and reducing operating costs.

[0049] Furthermore, a control valve 50 is provided on the drain pipe 22, and the control valve 50 controls the connection or disconnection of the drain pipe 22. In the drainage mode, the user only needs to perform a simple operation to open the control valve 50 to achieve the conduction of the drain pipe 22. At this time, the washing water can smoothly drain from the water cup 10, achieving the effects of cleaning and drainage. In the residual water removal mode, the opening of the control valve 50 is also important, which can ensure that the residual water in the water cup 10 is completely drained, avoiding dampness and bacterial growth in the water cup 10. More importantly, when the washing water or residual water in the water cup 10 is drained, the user only needs to gently close the control valve 50 to close the drain pipe 22. This operation is not only simple and convenient, but also effectively prevents the washing water in the drain pipe 22 from flowing back into the return water cup 10, ensuring the cleanliness and hygiene inside the water cup 10.

[0050] Regarding the specific implementation method of the control valve 50, among them, the control valve 50 can be a solenoid valve. In this way, remote or logical control of the connection or disconnection between the drain pipes 22 can be achieved. Through intelligent devices or control systems, users can easily control the opening and closing of the drain pipe 22 without having to operate manually, greatly improving the user experience. In other embodiments, the control valve 50 can also be a manual ball valve structure. In this way, the user only needs to gently rotate the ball valve to achieve the opening and closing of the drain pipe 22 without complicated operations.

[0051] Refer to Figure 1, Optionally, the drainage system 100 includes a one-way membrane 60 disposed between the outlet of the drain pipe 22 and the outlet of the drainage pump 21. The one-way membrane 60 is configured to allow the wash water at the outlet of the drainage pump 21 to enter the drain pipe 22 and block the reverse flow of the water in the drain pipe 22 back into the drainage pump 21. Among them, the one-way membrane 60 can be made of a variety of materials, commonly including polymers, fiberglass, ceramics, etc. The one-way membrane 60 made of these materials is precisely controlled through special process control, enabling precise control of the pore size, shape, and distribution pattern. The tiny holes or channels in its structure only allow water molecules to pass through in a specific direction, that is, from the drainage pump 21 to the drain pipe 22, thus achieving the characteristic of unidirectional flow. In practical applications, when the drainage pump 21 starts to operate, the wash water is discharged through its outlet. At this time, the one-way membrane 60 is in an open state, allowing the wash water to smoothly enter the drain pipe 22. However, when the drainage pump 21 stops operating or the drain pipe 22 becomes blocked or other abnormal situations occur, the water in the drain pipe 22 may attempt to flow back into the drainage pump 21 due to pressure changes or other reasons. In this case, the one-way membrane 60 will play its unique role, blocking the reverse flow of water through the tightly closed holes or channels, thereby protecting the drainage pump 21 from damage. The presence of the one-way membrane 60 not only enhances the stability and reliability of the drainage system 100 but also improves the safety of the system. It ensures a smooth connection between the drainage pump 21 and the drain pipe 22, avoiding equipment damage or failures caused by the reverse flow of water.

[0052] Referring to Figure 2 , In some structural forms, the water cup 10 includes a cup bottom wall 13, and the cup bottom wall 13 includes a slope 131 portion. The second drain port 12 is opened on the slope 131 portion. Thus, by disposing the second drain port 12 on the slope 131 with a height difference, when there are food residues in the water cup 10, the residues will roll down along the slope 131 due to gravity, and it is not easy to block the second drain port 12. In this way, the probability of the second drain port 12 being blocked can be reduced.

[0053] Referring to Figure 3 , In another embodiment, the water cup 10 further includes a cup side wall 14. The cup side wall 14 includes an inclined portion connecting the cup bottom wall 13. The second drain port 12 is opened on the inclined portion and is closer to the lowest point of the inclined portion than the highest point of the inclined portion. Thus, under the guiding action of the inclined portion, the residual water is more likely to concentrate on the cup bottom wall 13, so that the second drain port 12 can more easily suck the residual wash water, thereby improving the efficiency of discharging the residual water.

[0054] Referring to Figure 4, in yet another embodiment, the second drain opening 12 is formed in the bottom wall 13 of the cup, and the second drain opening 12 is formed at the lowest point of the bottom wall 13 of the cup adjacent to the inclined portion. Thus, under the action of gravity, the washing water located on the inclined portion can naturally flow towards the second drain opening 12 at the bottom of the cup. This not only improves the drainage efficiency but also makes the effect of sucking the residual washing water more remarkable.

[0055] Optionally, the second drain opening 12 is provided at the lowest point of the bottom of the water cup 10. Thus, under the action of gravity, the washing water will naturally flow towards this lowest point, ensuring that the washing water can be discharged as completely as possible from the second drain opening 12 and avoiding the problem of water residue.

[0056] In some structural forms, a plurality of through holes are formed in the bottom of the water cup 10, and the plurality of through holes form the second drain opening 12. This increases the area and number of the second drain opening 12, further reducing the possibility of blockage. The design of the plurality of through holes also improves the speed and efficiency of the water removal assembly 30 sucking the residual washing water, enabling the residual washing water in the water cup 10 to be discharged more quickly.

[0057] In yet another embodiment, the water cup 10 includes a cup body 15 and a tee pipe 16. The tee pipe 16 includes a first interface 161, a second interface 162, and a third interface 163. The first interface 161 is communicated with the bottom of the cup body 15, the drainage assembly 20 is communicated with the second interface 162, and the water removal assembly 30 is communicated with the third interface 163. Among them, the first drain opening 11 is configured as the first interface 161, and the second drain opening 12 is configured as the third interface 163. Thus, by means of the setting of the tee pipe 16, only one interface needs to be connected to the cup body 15, which not only saves the manufacturing cost but also makes the structure of the water cup 10 more concise and compact.

[0058] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0059] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A drainage system, applied to a dishwasher, wherein the dishwasher has at least a drainage mode, a residual water removal mode and a flushing mode, characterized in that: The drainage system comprises: A water cup, wherein a first drain port and a second drain port are provided at the bottom of the water cup, and the height of the second drain port is not higher than the height of the first drain port; a drainage assembly, the drainage assembly being in communication with the first drainage port, and being used to drain the washing water in the water cup in the drainage mode; and a water removal component, the water removal component being in communication with the second drain port; Wherein, in the residual water removal mode, the water removal component is used to suck out the washing water that has not been completely drained by the drainage component from the second drainage port, and in the flushing mode, the water removal component is used to hydraulically flush the second drainage port.

2. The drainage system according to claim 1, characterized in that: The water removal assembly includes a water delivery pipeline and a forward and reverse pump, the water delivery pipeline is connected to the second drain port, and the forward and reverse pump is arranged on the water delivery pipeline; In the residual water removal mode, the forward and reverse rotation pump rotates forward to drive the water delivery pipeline to form a negative pressure so as to suck the residual washing water from the second drain port; In the flushing mode, the forward and reverse rotation pump reverses to drive the water flow in the water delivery pipeline to flow to the second drain outlet to hydraulically flush the second drain outlet.

3. The drainage system according to claim 2, characterized in that: The drainage assembly includes a drainage pump and a drainage pipe, the inlet of the drainage pump is connected to the first drainage port, one end of the drainage pipe is connected to the outlet of the drainage pump, and the water delivery pipeline is connected to the drainage pipe; In the flushing mode, the forward and reverse rotation pump reverses to drive the water in the drain pipe to flow through the water in the water delivery pipeline to the second drain outlet, so as to hydraulically flush the second drain outlet.

4. The drainage system according to claim 3, characterized in that: The drain pipe is provided with a control valve, and the control valve controls the connection or closing of the drain pipe.

5. The drainage system according to claim 3, characterized in that: The drainage system includes a one-way membrane, which is arranged between the drain pipe and the outlet of the drain pump. The one-way membrane is used to allow the washing water at the outlet of the drain pump to enter the drain pipe and prevent the water flow in the drain pipe from flowing back to the drain pump.

6. The drainage system according to any one of claims 1 to 5, characterized in that: The water cup comprises a cup bottom wall, the cup bottom wall comprises a slope portion, and the second drain port is arranged on the slope portion; Alternatively, the water cup includes a cup side wall and a cup bottom wall, the cup side wall includes an inclined portion connected to the cup bottom wall, the second drain outlet is opened on the inclined portion and is closer to the lowest point of the inclined portion than the highest point of the inclined portion, or the second drain outlet is opened on the cup bottom wall and is opened at a position of the cup bottom wall adjacent to the lowest point of the inclined portion.

7. The drainage system according to any one of claims 1 to 5, characterized in that: The second drain port is arranged at the lowest point of the bottom of the water cup.

8. The drainage system according to any one of claims 1 to 5, characterized in that: The bottom of the water cup is provided with a plurality of through holes, and the plurality of through holes form the second drainage port.

9. The drainage system according to any one of claims 1 to 5, characterized in that: The water cup comprises a cup body and a three-way pipe, the three-way pipe comprises a first interface, a second interface and a third interface, the first interface is connected to the bottom of the cup body, the drainage component is connected to the second interface, and the water removal component is connected to the third interface; Wherein, the first drain outlet is configured as the first interface, and the second drain outlet is configured as the third interface.

10. A dishwasher, characterized in that: Comprising a drainage system as claimed in any one of claims 1 to 9.

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