Drainage structure of washing equipment, washing equipment and control method

Abstract

The invention discloses a drainage structure of washing equipment, the washing equipment and a control method, and the drainage structure comprises a drainage device which is provided with a containing cavity, the bottom of the containing cavity is provided with a first opening communicated with a siphon pipeline, the containing cavity is further provided with a second opening communicated with a drainage pipeline, and a filter part is arranged between the first opening and the second opening of the containing cavity; a thread scrap separator is arranged on the water drainage pipeline, and the thread scrap separator and the filter part are used for filtering water flow carrying impurities including micro thread scraps; a bending structure is arranged at the highest position of the siphon pipeline; a water inlet of the siphon pipeline is higher than a water outlet; the siphon pipeline is provided with a valve piece for controlling on-off of the siphon pipeline. Micro-thread scraps of water flow discharged out of the washing equipment are filtered, residual water in the drainage device is drained through the siphoning effect, the siphon pipeline is interrupted through the valve piece, it is guaranteed that the siphoning effect is not generated when water needs to be drained when the water level is too high, and normal midway clothes adding operation is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing equipment, and in particular, relates to a drainage structure of washing equipment, washing equipment and a control method. Background Art

[0002] Micro-lint, also known as microplastics, refers to plastic particles with a diameter of less than 5 mm. They are clothing fiber fragments that fall off due to friction between clothes and clothes, or clothes and washing machines during the washing process. After being discharged into the water, micro-lint will enter the soil, causing soil compaction and affecting the growth of crops. Larger micro-lint is no longer than 5 mm, while smaller micro-lint is only a few microns long. In addition, chemical fiber clothing is currently popular. Micro-lint produced during the washing process will be scattered indoors after drying, especially at the bottom or top of furniture and appliances such as beds and sofas, and can enter the human blood through the food chain. Researchers have found micro-lint in embryonic blood. Although the direct health effects of micro-lint on the human body are not yet clear, research is being stepped up. Based on this, the European Union has legislated to implement step-by-step management of micro-lint emissions. In order to cut off micro-lint emissions at the source, it can only be filtered and collected when washing water is discharged.

[0003] Furthermore, in the drainage pump of the existing washing equipment, since the impeller cannot provide enough pressure for a small amount of water flow to be discharged through the drainage pipeline, water accumulates at the bottom of the drainage pump and cannot be discharged.

[0004] In addition, after the user starts washing clothes, if he finds that there are clothes that have not been added and needs to open the door again to add clothes, if the water level in the washing machine exceeds the observation window, he must drain some of the washing water before opening the door. Once the drainage pump is started to drain, since the drain pipe of the washing machine is generally inserted into the floor drain, that is, slightly lower or flush with the ground, the water inlet is located at the bottom of the outer drum of the washing machine, which is obviously higher than the ground, siphon drainage will be formed. Even if the drain pump stops running, it still cannot prevent the drainage from continuing until it is drained. This situation wastes a lot of water and detergent when opening the door to add clothes. And when adding detergent again, the amount of input is difficult to estimate. In more serious cases, if the washing program is started again before the siphon drainage is completed, the washing machine will start to fill the water again after finding that the water level is insufficient. In this way, water filling and drainage are carried out at the same time, resulting in a lot of water resources Waste and unable to wash normally.

[0005] At present, the existing washing equipment cannot filter the micro-lint in its drainage pipeline while draining the residual water in the drainage pump of the washing equipment through siphon action, nor can it control the siphon action to stop to ensure normal mid-line adding operation when the water level is too high.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a drainage structure, washing equipment and control method for a washing device. A lint separator and a filter element are arranged in the drainage pipeline to filter micro-lint from the water flow discharged from the washing device. The residual water in the drainage device is drained by the siphon effect. The siphon pipeline is interrupted by a valve element to ensure normal mid-line adding operation when the water level is too high.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] The present invention provides a drainage structure of a washing device, comprising:

[0010] A drainage device comprises a cavity, a first opening connected to a siphon pipeline is provided at the bottom of the cavity, a second opening connected to a drainage pipeline is provided in the cavity, and a filter is provided between the first opening and the second opening of the cavity;

[0011] A wire dust separator is arranged on the drainage pipeline, and the wire dust separator and the filter element are used to filter the water flow carrying impurities including micro wire dust;

[0012] A curved structure is provided at the highest point of the siphon pipeline, and the water inlet of the siphon pipeline is higher than the water outlet;

[0013] The siphon pipeline is provided with a valve member for controlling the on-off of the siphon pipeline.

[0014] The present invention realizes micro-thread-chip filtration of the water flow discharged from the washing device by means of a thread-chip separator and a filter element arranged in the drainage pipeline, drains the residual water in the drainage device by means of a siphon effect, and interrupts the siphon pipeline by a valve element to ensure normal mid-course clothing adding operation when the water level is too high.

[0015] A further solution of the present invention is that the siphon pipeline is connected with multiple channels at a position between its water inlet and the curved structure;

[0016] The multi-channel is also connected to the drainage pipeline;

[0017] The multi-channel comprises a valve member, and the valve member is used to control the opening and closing of the siphon pipeline and the drainage pipeline at the multi-channel.

[0018] In the above scheme, the control of the conduction and cutoff of the siphon pipeline is realized through multiple channels. For example, when adding clothes in the middle and the water level is too high and needs to be drained, the siphon pipeline is cut off to avoid the formation of a siphon effect in the siphon pipeline, which will cause the washing water to continue to be pumped out along the siphon pipeline during the subsequent washing process.

[0019] A further solution of the present invention is: an air duct is provided inside the multi-head channel, the air duct is connected to the siphon pipeline (710) and the connecting pipeline, the air duct has an air inlet connected to the external atmosphere, and the valve member for controlling the conduction and blocking of the air inlet is provided at the air inlet;

[0020] The connecting pipeline is connected to the drainage pipeline.

[0021] In the above scheme, by controlling whether the air inlet introduces the atmosphere into the air duct, it is possible to simultaneously control whether the siphon pipeline and the drainage pipeline produce a siphon effect, thereby achieving accurate control of the drainage water volume.

[0022] A further solution of the present invention is: a connecting piece is provided on the drainage pipeline, and the connecting piece is communicated with the connecting pipeline;

[0023] The curved structure is at least partially inserted into the interior of the connecting member.

[0024] In the above scheme, the cost of adding a siphon pipeline is reduced.

[0025] A further solution of the present invention is that the curved structure comprises a first curved portion and a second curved portion;

[0026] The siphon pipeline part extends vertically upward, and bends to one side at the end of the extension to the highest point in the vertical direction, forming the first bend;

[0027] The siphon pipeline bends downward from the highest point to form the second bend.

[0028] In the above solution, the siphon pipeline is used to pump water upwards through the first bend and the second bend.

[0029] A further solution of the present invention is: the second bend is arranged in the drainage pipeline to form a pipe-in-pipe structure with the drainage pipeline, and the drainage pipeline forms a third bend at the second bend.

[0030] The above scheme complies with the drainage pipeline setting of the upper drainage type washing equipment.

[0031] A further solution of the present invention is that the third curved portion is located close to the opening of the upper portion of the washing device;

[0032] The drainage pipeline extends from the third curved portion to the water outlet of the siphon pipeline, and forms a pipe-in-pipe structure with the siphon pipeline.

[0033] In the above scheme, the drainage pipeline setting of the upper drainage type washing equipment is conformed to, and the cost of adding a siphon pipeline is reduced through the pipe-in-pipe structure.

[0034] A further solution of the present invention is that the siphon pipeline is located at the water outlet inside the drainage pipeline and is not longer than the opening of the drainage pipeline outside thereof.

[0035] In the above scheme, the water outlet of the siphon pipe is not longer than the opening of the drainage pipe outside it, so that the water in the drainage pipe flows through the water outlet of the siphon pipe to form a negative pressure environment.

[0036] The present invention also provides a washing device, wherein the washing device is provided with the drainage structure of the washing device.

[0037] The present invention also provides a control method for a washing device, wherein the washing device comprises a valve member for controlling the connection and blocking of the siphon pipeline with the external atmosphere;

[0038] The control method of the washing equipment comprises:

[0039] Before stopping the operation of the drainage device, the washing equipment opens the valve member to connect the siphon pipeline to the external atmosphere.

[0040] In the above scheme, it is ensured that after the drainage device stops running, the siphon pipeline and the drainage pipeline do not produce a siphon effect.

[0041] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0042] 1. A valve is provided on the siphon pipe to control its on and off. The present invention realizes the micro-filament filtration of the water discharged from the washing equipment, drains the residual water in the drainage device through the siphon effect, and interrupts the siphon pipe through the valve to ensure the normal mid-way addition of clothes when the water level is too high;

[0043] 2. Through multiple channels, the control of the conduction and cutoff of the siphon pipeline is realized. For example, when adding clothes in the middle and the water level is too high and drainage is required, the siphon pipeline is cut off and the drainage pipeline does not produce a siphon effect, avoiding the formation of a siphon effect in the siphon pipeline, which in turn causes the washing water to be continuously pumped out along the siphon pipeline during the subsequent washing process.

[0044] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0046] Figure 1 It is a structural schematic diagram of a drainage structure of a washing device of the present invention being arranged in the washing device;

[0047] Figure 2 It is a structural schematic diagram of the process of separating wire scraps of the wire scrap separation system of the present invention;

[0048] Figure 3 It is a structural schematic diagram of the wire scrap collection process of the wire scrap separation system of the present invention.

[0049] In the figure: 110, housing; 120, motor; 130, water container; 140, door; 150, filter compartment door; 160, inner cylinder; 210, first pipeline;

[0050] 220, drainage device; 221, filter element; 222, first opening; 223, second opening; 224, fourth opening; 225, third opening; 230, second pipeline; 240, water pump motor;

[0051] 300, wire dust separator; 301, fixed ring; 302, fixed shell; 303, first filter screen; 304, second filter screen; 305, third filter screen;

[0052] 310, connecting pipeline; 311, blocking part; 312, rotating shaft; 313, collecting channel; 314, water inlet shell; 315, filter shell;

[0053] 320, drainage pipeline; 321, internal drainage pipeline; 322, external drainage pipeline; 323, joint; 324, water storage chamber;

[0054] 330, connector;

[0055] 400, wire scrap collector; 401, filter; 402, receiving cup; 410, water return pipe;

[0056] 710, siphon pipeline; 720, multi-channel; 730, valve member; 740, first bend; 750, second bend; 760, third bend; 770, connecting pipeline.

[0057] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0059] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] like Figures 1 to 3 As shown, the present invention provides a drainage structure, washing equipment and control method for a washing device. The lint separator 300 and the filter element 221 provided in the drainage pipeline 320 realize micro-lint filtration of the water flow discharged from the washing device, and the residual water in the drainage device 220 is drained by the siphon effect. The siphon effect of the siphon pipeline 710 and the drainage pipeline 320 is interrupted by the valve element, so as to ensure the normal operation of adding clothes in the middle when the water level is too high and needs to be drained.

[0062] Embodiment 1

[0063] like Figure 1 As shown, this embodiment provides a drainage structure of a washing device, including: a drainage device 220, having a cavity, a first opening 222 connected to a siphon pipeline 710 is provided at the bottom of the cavity, and the cavity is also provided with a second opening 223 connected to a drainage pipeline 320, and a filter element 221 is provided between the first opening 222 and the second opening 223 in the cavity; a lint separator 300 is provided on the drainage pipeline 320, and the lint separator 300 and the filter element 221 are used to separate water flows carrying impurities including micro-lint respectively; a curved structure is provided at the highest point of the siphon pipeline 710, and the water inlet of the siphon pipeline 710 is higher than its water outlet; and a valve element 730 for controlling the on-off of the siphon pipeline 710 is provided on the siphon pipeline 710.

[0064] The lint separator 300 provided in the drainage pipe 320 and the filter element 221 of the drainage device 220 realize the separation and collection of the micro-lint of the water flow discharged from the washing device, and the residual water in the drainage device 220 is drained by the siphon effect, ensuring that the washing machine is free of water when not washing, which is healthier and more hygienic. The siphon effect of the siphon pipe 710 is interrupted by the valve element 730, ensuring the normal operation of adding clothes in the middle when the water level is too high.

[0065] The siphon pipeline 710 is separated from the drainage pipeline 320 from the drainage device 220 to the curved structure, and is inserted into the drainage pipeline 320 at the location of the curved structure, and then extends inside the drainage pipeline 320.

[0066] Specifically, the washing device may be a washing machine or a washer-dryer, preferably a top-drainage washing machine or a washer-dryer.

[0067] Specifically, the wire scrap separator 300 is provided with a filter net with high filtration accuracy that can filter micro wire scraps, and the filter element 221 is a filter net with high filtration accuracy that can filter micro wire scraps. Therefore, by setting the filter element 221 between the first opening 222 and the second opening 223, when the drainage device 220 stops running, the water flow in the drainage pipeline 320 falls back and accumulates at the bottom, respectively passes through the wire scrap separator 300 and the filter element 221 to filter out impurities including micro wire scraps, enters the siphon pipeline 710, and is discharged from the washing equipment. Therefore, although the diameter of the siphon pipeline 710 is small, it will not be blocked in long-term use. The water flow in the drainage pipeline 320 is discharged from the washing equipment after the impurities including micro wire scraps are filtered out by the wire scrap separator 300. It is ensured that there are no impurities including micro wire scraps in the water flow discharged from the washing equipment through the siphon pipeline 710 and the drainage pipeline 320, and there is no risk of clogging in the pipelines.

[0068] In detail, the process of the siphon pipe 710 generating the siphon effect is as follows: when the drainage device 220 drains water, there is water at the water inlet of the siphon pipe 710, and the water in the drainage pipe 320 flows through the water outlet of the siphon pipe 710 to form a negative pressure environment at the water outlet, so that water flows into the siphon pipe 710 and the air in the siphon pipe 710 is discharged; when there is water at the water inlet of the siphon pipe 710 and the water outlet is not liquid-sealed, since the water inlet is higher than the water outlet, according to the Bernoulli equation of fluid mechanics, it can be known that a pressure difference must be formed in the curved structure at the highest point in the vertical direction of the siphon pipe 710, which pushes the water flow to continuously move toward the water outlet, forming a siphon effect, and then continuously discharging the residual water in the drainage device 220 until the residual water is drained. In a specific application of this embodiment, the water outlet of the siphon pipeline 710 and the opening of the drainage pipeline 320 are inserted into a floor drain below the bottom of the shell of the washing device, so that the water inlet is higher than the water outlet.

[0069] Therefore, by inserting the siphon line 710 into the drainage line 320, the impurities including micro-line scraps discharged from the upper drainage drum washing machine are filtered, and the residual water in the drainage device 220 is drained, so that after the upper drainage drum washing machine is washed, there is basically no residual water in the washing machine, and the remaining trace water will soon evaporate and the interior will become dry. It does not breed bacteria and odor, and there is no micro-line scraps in the drainage, which is green and environmentally friendly. In addition, the housing 110 of the washing machine only needs to be provided with one drain port, which reduces the cost of adding the outlet of the siphon line 710 on the housing 110 and inserting the floor drain joint, and is convenient for users to arrange the drainage line layout. While reducing the work and cost of arranging the drainage line for users, compared with the water outlet of two pipes, it can also reduce the risk of damage. Since the siphon line 710 has a smaller diameter, it occupies less internal space of the drainage line 320, so that the drainage speed of the drainage line 320 is not affected.

[0070] In summary, by first separating the siphon pipe 710 from the drainage pipe 320 and then inserting it into the interior of the drainage pipe 320, the lint separator 300 set in the drainage pipe 320 does not conflict with the siphon pipe 710, thereby achieving the filtration of micro-lint in the discharged water flow, and triggering the siphon effect by drainage, so that the residual water in the drainage device 220 is drained.

[0071] In this embodiment, the siphon pipeline 710 is connected to a multi-channel 720 at a position between its water inlet and the curved structure; the multi-channel 720 is also connected to the drainage pipeline 320; the multi-channel 720 includes a valve component 730, and the valve component 730 is used to control the connection and disconnection of the siphon pipeline 710 and the drainage pipeline 320 at the multi-channel 720.

[0072] Through the multi-head channel 720 and the valve member 730, the control of the conduction and cutoff of the siphon pipe 710 is realized. For example, when adding clothes in the middle and the water level is too high and drainage is required, the siphon pipe 710 is cut off and no water flows through the siphon pipe 710, thereby avoiding the formation of a siphon effect in the siphon pipe 710 and the drainage pipe 320.

[0073] In this embodiment, an air duct is provided on the multi-head channel 720, and the air duct connects the siphon pipeline 710 and the connecting piece 330. The air duct has an air inlet connected to the external atmosphere, and the valve component 730 for controlling the conduction and blocking thereof is provided at the air inlet; the connecting piece 330 is connected to the drainage pipeline 320.

[0074] By controlling whether the air inlet introduces the atmosphere into the air duct, it is possible to simultaneously control whether the siphon pipeline 710 and the drainage pipeline 320 produce a siphon effect, thereby achieving accurate control of the amount of discharged water.

[0075] By controlling whether the air inlet is introduced into the air duct, it is possible to simultaneously control whether the siphon line 710 and the drainage line 320 generate a siphon effect, thereby achieving accurate control of the amount of water discharged. Specifically, during the washing process of the washing machine, the user adds clothes to the inner drum 160 of the washing machine. Because the water level in the inner drum 160 is too high and needs to be drained, the amount of water discharged needs to be accurately controlled, and the siphon effect of the siphon line 710 and the drainage line 320 needs to be stopped.

[0076] Through the multi-head channel 720 and the valve member 730, the control of the connection and cutoff of the siphon pipe 710 and the drainage pipe 320 with the atmosphere is realized. For example, when the water level is too high and drainage is required when adding clothes in the middle, the siphon pipe 710 and the drainage pipe 320 are connected to the atmosphere. In this case, when draining, air enters the siphon pipe 710 and the drainage pipe 320, and no water flows through the siphon pipe 710. Although there is normal water flow in the drainage pipe 320, a large amount of air is mixed in. Through such a setting, the formation of a siphon effect in the siphon pipe 710 and the drainage pipe 320 is avoided, and the drainage device 220 is ensured to stop, and all drainage stops immediately, thereby avoiding the washing water from being continuously drawn out along the siphon pipe 710 during the subsequent washing process, affecting the normal washing process.

[0077] Specifically, Figure 1As shown, the multi-channel 720 is a four-way component, the air duct is a channel in the four-way component, the valve member 730 is a solenoid valve, the connector 330 is a pipe joint member, the air inlet is an exposed pipe port of the four-way component, the solenoid valve is arranged at the exposed pipe port, and the four-way component is provided with two openings connecting the upper and lower sections of the siphon pipeline 710, an air inlet connecting the external atmosphere and an opening connecting the connector 330. The multi-channel 720 is arranged at a position close to the connector 330, and the connector 330 is arranged at a position close to the highest point of the drainage pipeline of the washing device. The multi-channel 720 is connected to the connector 330 through a short, curved connecting pipeline 770, so that the multi-channel 720 is connected to the drainage pipeline 320 through the connecting pipeline 770 and the connector 330.

[0078] Specifically, the third curved portion 760 is located near the opening of the upper portion of the washing device. More specifically, the third curved portion 760 is led out to the outside through the drain port on the upper portion of the washing device.

[0079] In detail, when the multi-head channel 720 introduces atmosphere into the siphon pipe 710 and the third bend 760, the water in the drainage pipe 320 that has not flowed to the connecting piece 330 will flow back into the drainage device 220. In the siphon pipe 710, since the density of the atmosphere is lower than the density of water, part of the water in the siphon pipe 710 that flows through the highest point of the pipe continues to flow out, and the water below the highest point flows back into the drainage device 220.

[0080] In this embodiment, a connector 330 is provided on the drainage pipeline 320 , and the connector 330 is in communication with the connecting pipeline 770 ; the curved structure of the connecting pipeline 770 is at least partially inserted into the interior of the connector 330 .

[0081] The cost of adding the siphon pipeline 710 is reduced.

[0082] Specifically, the bending structure of the siphon pipeline 710 includes a first bending portion 740 and a second bending portion 750; the siphon pipeline 710 partially extends vertically upward, and bends to one side at the end of the extension to the highest point in the vertical direction, forming the first bending portion 740; the siphon pipeline 710 bends downward from the highest point to form the second bending portion 750. Through the first bending portion 740 and the second bending portion 750, the siphon pipeline 710 is able to pass the highest point upward and then pump water downward.

[0083] Specifically, Figure 1 As shown, the bending radius of the second curved portion 750 is greater than the bending radius of the first curved portion 740, which reduces the resistance of the pipe of the second curved portion 750 draining water downward, thereby making the water absorption effect of the siphon action better.

[0084] In this embodiment, the first curved portion 740 is at least partially inserted into the interior of the connecting member 330 , and the second curved portion 750 is disposed in the connecting member 330 or the drainage pipe 320 .

[0085] The siphon pipeline 710 is provided with a first curved portion 740 and a second curved portion 750 inside the connector 330 or in the drainage pipeline 320 , thereby further reducing the cost of adding the siphon pipeline 710 .

[0086] In this embodiment, the second curved portion 750 is disposed in the drainage pipe 320, and the drainage pipe 320 forms a third curved portion 760 at the second curved portion 750. The drainage pipe 320 is disposed in accordance with the upper drainage type washing device.

[0087] In detail, when the drainage device 220 is running, water is discharged into the drainage pipe 320 to expel the internal air, and the water inlet of the drainage pipe 320 is higher than its opening, thereby causing a siphon effect in the drainage pipe 320. When the drainage device 220 stops, the water flow in the drainage pipe 320 will continue to be discharged from the washing equipment due to the siphon effect and will not stop, and cannot be controlled.

[0088] In this embodiment, the third bend 760 is located at the highest point of the drainage pipeline of the washing device; the drainage pipeline 320 from the third bend 760 to the water outlet of the siphon pipeline 710 forms a pipe-in-pipe structure with the siphon pipeline 710. The second bend 750 is arranged in the drainage pipeline 320, and forms a pipe-in-pipe structure with the drainage pipeline. Further, the second bend 750 forms a pipe-in-pipe structure with the drainage pipeline 320 with the same curvature.

[0089] The drainage pipeline 320 is arranged in accordance with the upper drainage type washing equipment, and the cost of adding the siphon pipeline 710 is reduced through the pipe-in-pipe structure.

[0090] In detail, the highest point of the drainage pipeline of the upper drainage type washing equipment is set at the upper part of the washing equipment, and has a water outlet pipeline bent and extended to the outside.

[0091] In this embodiment, the siphon pipe 710 is located at the water outlet inside the drainage pipe 320 and is not longer than the opening of the drainage pipe 320 outside. Since the water outlet of the siphon pipe 710 is not longer than the opening of the drainage pipe 320 outside, the water in the drainage pipe 320 flows through the water outlet of the siphon pipe 710 to form a negative pressure environment.

[0092] By making the outlet of the siphon pipe 710 not longer than the opening of the drainage pipe 320 outside the siphon pipe 710, the water in the drainage pipe 320 flows through the outlet of the siphon pipe 710 to form a negative pressure environment, so that the water in the drainage device 220 is sucked into the siphon pipe 710. In detail, according to the Bernoulli principle of fluid mechanics, the water flow velocity at the outlet is faster, which reduces the air pressure in the outlet, thus forming a negative pressure environment at the outlet, and making the pressure at the water inlet of the siphon pipe 710 greater than the outlet.

[0093] Furthermore, the drainage pipe 320 includes an inner drainage pipe 321 and an outer drainage pipe 322. The inner drainage pipe 321 connects the connecting piece 330 and the drainage device 220. The outer drainage pipe 322 forms a pipe-in-pipe structure with the connecting piece 330 and the siphon pipe 710. The diameter of the outer drainage pipe 322 is slightly larger than the diameter of the inner drainage pipe 321, thereby achieving a pipe-in-pipe structure that does not reduce the amount of water discharged from the drainage pipe 320.

[0094] In this embodiment, the wire scrap collector 400 is connected to the wire scrap separator 300, and the wire scrap separator 300 discharges the impurities including micro-wire scraps filtered out by the wire scrap collector 400 along with the water flow; the water flow is filtered in the wire scrap collector 400 and then discharged into the drainage device 220, and the wire scrap collector 400 is connected to the third opening 225 of the cavity of the drainage device 220, and the third opening 225 and the first opening 222 are located on the same side of the filter element 221.

[0095] Specifically, the drainage device 220 is a drainage pump. The water drum 130 of the washing equipment is connected to the fourth opening 224 of the cavity of the drainage device 220 through the first pipe 210. The fourth opening 224 and the second opening 223 are located on the same side of the filter element 221. The drainage device 220 is provided with a water pump motor 240 near the second opening 223. The drainage motor 240 is used to pressurize the water flow and then send it into the drainage pipe 320, so that the water pressure at the second opening 223 is larger and the pressure at the third opening 225 is smaller, thereby enhancing the separation effect of the water in the filter 401.

[0096] Specifically, the wire dust collector 400 is located below the wire dust separator 300, and the drainage device 220 is located below the wire dust collector 400. When the drainage device 220 stops running, the accumulated water in the wire dust separator 300 falls back, and the impurities inside are flushed into the wire dust collector 400. After the wire dust collector 400 filters and collects the impurities, the water flows back into the cavity of the drainage device 220. Automatic backflow of accumulated water and automatic cleaning of the wire dust separator 300 by falling accumulated water are achieved.

[0097] In this embodiment, the ratio of the diameter of the siphon pipe 710 to the diameter of the drainage pipe 320 is a fixed value. Specifically, since there are at least three drainage processes in a standard washing, including one drainage process of washing and two drainage processes of rinsing, in order to avoid the siphon effect of the siphon pipe 710 not being completed after drainage, the next water inlet node has already started, resulting in continuous drainage of the washing equipment, and the diameter of the siphon pipe 710 needs to be set larger to ensure that the siphon drainage has stopped before the next water inlet. Since the diameter and the highest point of the drainage pipe 320 determine the amount of residual water in the drainage device 220, the ratio of the diameter of the siphon pipe 710 to the diameter of the drainage pipe 320 is determined by experiments, which can ensure that the siphon effect of the siphon pipe 710 takes a short time to drain the residual water of the drainage device 220 and will not affect the next water inlet. In this embodiment, the lint separator 300 and the filter element 401 provided in the drainage pipeline 320 are used to filter and collect micro-lint in the water flow discharged from the washing device, and the residual water in the drainage device 220 is drained by the siphon effect. The siphon drainage of the siphon pipeline 710 and the drainage pipeline 320 is interrupted by the valve element 730 to ensure the normal mid-course clothing adding operation when the water level is too high; the siphon pipeline 710 and the drainage pipeline 320 are connected through the air duct of the multi-head channel 720, and it is controlled whether the air inlet of the air duct is passed into the air duct, so that the siphon effect of the siphon pipeline 710 and the drainage pipe 320 is controlled at the same time, thereby realizing the control of the discharged water volume; the impurities filtered by the lint separator 300 are collected, and the water flow rushing into the lint collector 400 can flow back to the drainage device 220 to be sucked in by the siphon pipeline 710 and discharged from the washing device.

[0098] In this embodiment, micro-lint filtration of the water flow discharged from the washing device is achieved, the residual water in the drainage device 220 is drained by the siphon effect, and the siphon effect of the siphon pipeline 710 and the drainage pipeline 320 is interrupted by the valve member 730 to ensure normal mid-way clothing addition operation when the water level is too high; through the multi-head channel 720, the connection and cutoff of the siphon pipeline 710 and the drainage pipeline 320 with the atmosphere are controlled. For example, when adding clothes midway because the water level is too high and drainage is required, the siphon pipeline 710 and the drainage pipeline 320 are connected to the atmosphere to avoid the formation of a siphon effect in the siphon pipeline 710 and the drainage pipeline 320, and the drainage device 220 stops draining and stops draining synchronously to avoid the washing water being continuously pumped out along the siphon pipeline 710 and the drainage pipeline 320 during the subsequent washing process.

[0099] Embodiment 2

[0100] like Figure 1 As shown, this embodiment provides a washing device based on the first embodiment, and the washing device is provided with the drainage structure of the washing device described in the first embodiment.

[0101] Specifically, the washing device may be a washing machine or a washer-dryer, preferably a top-draining washing machine or a washer-dryer.

[0102] In this embodiment, Figure 1 As shown, the washing device includes a water cylinder 130, a drainage device 220 is connected to the water cylinder 130 through a first pipe 210, and an external drainage pipe 322 is connected to the external floor drain through an outlet opened on the washing device casing 110.

[0103] Embodiment 3

[0104] like Figures 1 to 3 As shown, this embodiment, based on the first and second embodiments, provides a lint separation system including the lint separator 300 and the lint collector 400 as described in the first and second embodiments, and the lint separation system is applied to the washing equipment as described in the second embodiment.

[0105] In this embodiment, Figure 2 and 3 As shown, the wire scrap separation system specifically includes: a wire scrap separator 300, used to filter the water flow carrying filtered impurities including micro-wire scraps; a wire scrap collector 400, connected to the wire scrap separator 300, and used to collect the filtered impurities filtered out by the wire scrap separator 300; a connecting pipe 310, provided with a water inlet, a connecting port connected to the wire scrap separator 300, and a collecting port connected to the wire scrap collector 400, the connecting port is located at the upper part of the connecting pipe 310, and the collecting port is located at the lower part of the connecting pipe 310; a conduction control mechanism, used to control the water inlet and the collecting port of the connecting pipe 310 to select one of the connection or closing with the connecting port.

[0106] Specifically, the washing device may be a washing machine or a washer-dryer, preferably a top-draining washing machine or a washer-dryer.

[0107] Specifically, a collecting channel 313 connected to the wire scrap collector 400 is provided at the bottom of the connecting pipe 310. When the wire scrap collector 400 is provided at any position at the bottom of the connecting pipe 310, the collecting channel 313 can allow the accumulated water carrying the filtered impurities to flow back to the wire scrap collector 400 under the action of gravity. More specifically, when the wire scrap collector 400 is not located directly below the wire scrap separator 300, the collecting channel 313 is provided to be tilted downward.

[0108] In detail, the wire dust separator 300 is used to filter impurities including micro wire dust, and its filtering accuracy is high and the water flow rate is slow. If the water flow needs to pass through an additional filtering and collecting device such as the wire dust collector 400 at this time, since it may store and accumulate more filtering impurities and has a longer filter screen with higher filtering accuracy, its water flow rate must be slower, and it is impossible to ensure a good filtering effect, a good collection effect and a high filtering efficiency at the same time. Therefore, when the collection port is turned on, the water inlet is cut off, which can ensure the good filtering effect and high filtering efficiency of the wire dust separator 300, and also ensure that the wire dust collector 400 has a higher filtering accuracy and a longer filter screen, and will not reduce the filtering efficiency of the wire dust separation system.

[0109] At the same time, the accumulated water in the wire chip separator 300 at the upper part of the connecting pipe 310 flows back and carries the filtered impurities into the wire chip collector 400, so that the wire chip separator 300 is automatically flushed each time the water inlet stops taking in water and filtering stops, to ensure that there is no residual or accumulated filtered impurities inside, so that the water can pass smoothly when the wire chip separator 300 is filtering next time, thereby ensuring that the wire chip separation system can filter multiple times and always maintain a good filtering effect, collection effect and filtering efficiency.

[0110] Therefore, by connecting the water inlet and the collecting port of the connecting pipe 310 to the connecting port, during filtering, the water flows only through the wire chip separator 300 but not through the wire chip collector 400, thereby ensuring better filtering and collecting effects on filtered impurities including micro-wire chips, as well as higher filtering efficiency. When collecting impurities, only the accumulated water backflowing through the wire chip separator 300 carries the filtered impurities into the wire chip collector 400, i.e., a better collection effect on filtered impurities is ensured without the need for additional power.

[0111] In this embodiment, the lint separator 300 includes at least two filter parts, and the filter parts are arranged to cover the connection port; the filtering accuracy of the at least two filter parts increases from bottom to top.

[0112] By using at least two filter parts, larger filtered impurities will not block the water flow channel of the micron-level filter part on a large scale, thereby ensuring a high filtering efficiency of the wire scrap separator 300 and ensuring drainage efficiency.

[0113] In this embodiment, at least two filter parts are inserted into the connecting pipeline 310 in a conical shape from the connecting port, and the surface areas of the conical shapes of the at least two filter parts decrease sequentially from bottom to top.

[0114] By means of at least two conical filter parts, the filtering efficiency of the lint separator 300 is further ensured to be high.

[0115] Specifically, the wire scrap separator 300 also includes a fixing ring 301 and a fixing shell 302. The filtering part is provided with three, namely a first filter screen 303, a second filter screen 304 and a third filter screen 305. The fixing shell 302 is fixedly connected to the lower part of the water storage chamber 324. The fixing shell 302 is a cylindrical shell, and a fixing ring 301 is installed inside the fixing shell. The fixing ring 301 is connected and cooperated with the fixing shell 302 to clamp the first filter screen 303, the second filter screen 304 and the third filter screen 305 located between the fixing ring 301 and the fixing shell 302. The first filter screen 303, the second filter screen 304 and the third filter screen 305 are arranged in sequence from the inside to the outside and from the top to the bottom, and their filtering accuracy decreases in sequence. The first filter screen 303 is a filter screen that can filter micro-wire scraps, and is used to filter micro-wire scraps of micron level. The second filter screen 304 is used to filter larger micro-wire scraps. The third filter screen 305 is used to filter very large wire scraps and other filter impurities. More specifically, the fixing ring 301 and the fixing shell 302 are preferably threadedly connected, and the first filter 303, the second filter 304 and the third filter 305 are preferably made of a harder material, or a flexible filter with a frame or skeleton support. The filtering accuracy level of the first filter 303 is set according to the regulations of the place where the product is sold, so that it can filter smaller micro-wire scraps.

[0116] In detail, the first filter screen 303 can filter micro-wire scraps, and its filtering accuracy is high and the water flow efficiency is low. Therefore, if it is not cleaned, it is easy to cause the residue and accumulation of filtered impurities, and its water flow efficiency is further reduced, resulting in the filtering efficiency of the wire scrap separator 300 being so low that it cannot meet the use needs. Therefore, the first filter screen 303, the second filter screen 304 and the third filter screen 305 are flushed by the backflow of the accumulated water in the wire scrap separator 300. By taking advantage of the fact that the filter screens are easy to backwash, the filtered impurities including micro-wire scraps can be completely separated from the first filter screen 303, the second filter screen 304 and the third filter screen 305 and flow back to the wire scrap collector 400 with the water flow, thereby ensuring that the wire scrap separator 300 filters multiple times, and the wire scrap separation system can always maintain a good filtering effect, collection effect and filtering efficiency.

[0117] In this embodiment, the lint separator 300 further includes a water storage chamber 324 , the top of the water storage chamber 324 is provided with a clean water outlet, and the bottom is connected to the filter part.

[0118] In this embodiment, the side wall of the bottom of the water storage chamber 324 gradually shrinks to the connecting port.

[0119] The water storage chamber 324 provides sufficient accumulated water for the backflow of filtered impurities in the lint collector 400, ensuring that the collection of filtered impurities does not require additional power.

[0120] Specifically, the clean water outlet at the top of the water storage chamber 324 is provided with a joint 323 connected to the drainage pipeline 320, and the inner diameter of the joint 323 is smaller than the maximum diameter inside the filter shell 315 at the upper part of the connecting pipeline 310, and smaller than the maximum diameter inside the second pipeline 230 connected to the water inlet, so as to ensure that the water flow rate passing through the filter part is reduced, and to prevent excessively fast water from directly flushing the filter part made of the filter mesh material, causing the filter impurities including micro-wire scraps to be firmly inserted into the filter mesh, and making it difficult to handle when the accumulated water is reversely flushed to the filter part. Therefore, the filter mesh is reversely flushed by the accumulated water in the water storage chamber 324, so that the filter impurities attached to the filter mesh fall into the wire scrap collector 400, and the characteristics of the filter mesh that the filter impurities are easily attached to the front side and difficult to flush, and the filter impurities are extremely easy to flush on the back side, can be used to keep the filter mesh clean and have a high water flow efficiency.

[0121] In this embodiment, a filter 401 is disposed inside the wire scrap collector 400, and the filter 401 can filter micro wire scraps.

[0122] Specifically, the filtering accuracy level of the filter 401 is set with reference to the regulations of the place where the product is sold, so that it can better collect smaller micro-wire chips.

[0123] By means of the filter 401, a better collection effect of filtering impurities including micro-wire chips is ensured.

[0124] Specifically, the lint collector 400 also includes a receiving cup 402 and a return pipe 410, the filter 401 is a filter screen with the same mesh size as the first filter screen 303, the collecting channel 313 is inserted into the top of the receiving cup 402, and the top of the receiving cup 402 is preferably open, and the receiving cup 402 is connected to the drainage device 220 through the return pipe 410 at its bottom, the receiving cup 402 and the collecting channel 313 are detachably connected, and the return pipe 410 and the drainage device 220 are detachably connected, therefore, the user can conveniently observe the collection amount of filtered impurities in the receiving cup 402 through the opening at the top of the receiving cup 402, and replace or clean the receiving cup 402 when the collection amount is large.

[0125] In this embodiment, the conduction control mechanism includes a sealing portion 311 rotatably arranged inside the connecting pipe 310; when water is guided to the wire chip separator 300 for filtration, the sealing portion 311 is rotated to the first position by the impact of the water flow, opening the water inlet and blocking the collecting port; after the water flow stops entering the connecting pipe 310, the sealing portion 311 rotates to the second position, blocking the water inlet and opening the collecting port.

[0126] The blocking portion 311 enables selective connection between the collecting port and the water inlet.

[0127] Specifically, the connecting pipeline 310 also includes a rotating shaft 312, a collecting channel 313, a water inlet shell 314 and a filter shell 315. The blocking portion 311 is preferably a valve plate, and its bottom end is fixed on the rotating shaft 312 so that it can rotate around the rotating shaft 312. The rotating shaft 312 is arranged at the bottom of the water inlet shell 314. The upper part of the water inlet shell 314 is connected to the filter shell 315. Unconnected collecting ports and water inlets are respectively arranged on both sides of the bottom. The blocking portion 311 is rotated to a first position to abut against the side wall of the filter channel to block the collecting port and the filter channel. The blocking portion 311 is rotated to a second position to abut against the water inlet to block the water inlet. More specifically, an elastic element is provided on the rotating shaft 312 of the blocking part 311, so that when water flows into the water inlet, the blocking part 311 can be pushed open, and when no water flows into the water inlet, the blocking part 311 is pulled back to the second position by the elastic element, thereby realizing automatic resetting of the blocking part 311 when no water flows into the water inlet.

[0128] In this embodiment, the lint separation system of the washing equipment also includes: a drainage device 220, which is used to drive the water to be filtered into the second pipeline 230 and flow toward the lint separator 300; the lint collector 400 is connected to the drainage device 220, and the drainage device 220 is also used to receive the accumulated water flowing into the lint collector 400.

[0129] The drainage device 220 realizes the driving of the water to be filtered and the recovery of the accumulated water.

[0130] In a specific implementation of the present embodiment, the drainage device 220 is connected or inserted into the water inlet through the second pipe 230, and is connected to the receiving cup 402 through the return pipe 410. The diameter of the second pipe 230 is smaller than the diameter of the filter shell 315, the diameter of the drainage pipe 320 and the diameter of the joint 323, which further avoids excessively rapid water from directly flushing the filter part of the filter material, and avoids filtered impurities including micro-wire chips from being firmly inserted into the filter, which makes it difficult to handle when the accumulated water is reversely flushed to the filter part.

[0131] In this embodiment, the working process of the wire scrap separation system of the washing equipment is: in the process of filtering wire scraps, Figure 2As shown, the drainage device 220 discharges washing water into the connecting pipe 310 through the second pipe 230, so that the washing water impacts the blocking part 311, so that the blocking part 311 rotates to the first position around the rotating shaft 312, and through the pressurization of the second pipe 230, most of the water flowing into the connecting pipe 310 flows upward, passes through the third filter screen 305, the second filter screen 304 and the first filter screen 303, so that the filtered impurities including micro-line scraps are separated layer by layer by the filter part, the larger filtered impurities including micro-line scraps are filtered by the third filter screen 305, and the smaller micro-line scraps are filtered by the first filter screen 303, so that the water flow passes quickly and passes through the water storage chamber 32 4 flows into the drainage pipeline 320. During this period, since the wire dust collector 400 is located in a confined space, the drainage device 220 extracts the wire dust collector 400 through the return water pipeline 410, so that the return water pipeline 410 and the wire dust collector 400 are in a negative pressure state, and the blocking portion 311 further blocks the collection port more tightly. At the same time, even if a small part of the water flow that is not blocked by the blocking portion 311 enters the wire dust collector 400, it can be drawn away by the drainage device 220 and discharged into the connecting pipeline 310 again, so as to prevent the excessive amount of water in the wire dust collector 400 from flowing back into the connecting pipeline 310 through the collection port;

[0132] After the wire scraps are filtered out and the drainage device 200 stops working, the following steps are started: Figure 3 In the collection process shown, the residual water in the water storage chamber 324 flows back to the filter part at the bottom thereof, and when passing through the filter part, the filter impurities attached thereto are washed away by the feature that the filter part is easy to conduct in reverse, and the impurities fall into the lint collector 400. The drainage device 220 extracts the lint collector 400 through the return pipe 410, so that the impurities adhere to the filter 401 with a larger area, and the accumulated water completely flows back to the drainage device 220 and is extracted by the siphon 710. When there is no residual water in the lint collector 400, the user can remove the lint collector 400 from the lint separation system of the washing machine to pour out the impurities collected by the lint collector 400.

[0133] Specifically, Figure 1As shown, the washing device is a washing machine or a washer-dryer, preferably a top-drainage washing machine or a washer-dryer. The drainage device 220 is connected to the water cylinder 130 of the washing device through the first pipeline 210. The water cylinder 130 is preferably the outer cylinder of a drum washing machine. Since the pipeline connected to the lint separator 300 and the lint collector 400 can be bent, it can be set at any position on the left and right sides of the front or rear door 140 of the housing 110. The drainage device 220 is set at the bottom of the housing 110. A filter compartment door 150 corresponding to the lint collector 400 is set at the lower side of the upper door 140 of the housing 110, so that the user can observe the amount of filtered impurities collected by the lint collector 400 through the filter compartment door 150, and take out the lint collector 400 to replace and clean it.

[0134] In a specific implementation of this embodiment, the connecting pipe 310 is arranged on one side of the motor 120 of the water drum 130, so that the structure of the washing device is more compact.

[0135] In this embodiment, when collecting impurities, the filtered impurities are only carried back through the accumulated water of the wire scrap separator 300 to fall into the wire scrap collector 400, that is, no additional power is required to achieve a better collection effect of the filtered impurities after each filtration, ensuring that the wire scrap separator 300 does not have residual filtered impurities, and the wire scrap separation system still has a good filtering effect, collection effect and filtration efficiency for the micro-wire scraps after filtering the micro-wire scraps for many times; through at least two filtering parts, larger filtered impurities will not block the water flow channel of the micron-level filtering part on a large scale, ensuring a high filtering effect of the wire scrap separator 300 while taking into account the drainage efficiency.

[0136] Embodiment 4

[0137] This embodiment provides a control method for a washing device based on the first and second embodiments. The control method for a washing device is installed in the washing device described in the second embodiment and is used to control the drainage structure of the washing device described in the first embodiment. The washing device includes a valve member 730 for controlling the connection and blocking of the siphon pipeline 710 with the external atmosphere. The control method for the washing device includes: before the washing device stops the operation of the drainage device 220, the valve member 730 is opened to connect the siphon pipeline 710 with the external atmosphere. Furthermore, when the washing device needs to prevent siphoning, the siphon pipeline 710 is connected with the external atmosphere.

[0138] In a specific implementation of this embodiment, the washing device opens the valve member 730 before sending an instruction to the drainage device 220 to start operation.

[0139] In this embodiment, it is ensured that after the drainage device 220 stops running, the siphon pipeline 710 and the drainage pipeline 320 do not produce a siphon effect.

[0140] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A drainage structure for a washing device, characterized in that: A drainage device (220) comprises a cavity, wherein the bottom of the cavity is provided with a first opening (222) connected to a siphon pipeline (710), the cavity is further provided with a second opening (223) connected to a drainage pipeline (320), and a filter element (221) is provided between the first opening (222) and the second opening (223) of the cavity; A wire dust separator (300) is provided on the drainage pipeline (320), and the wire dust separator (300) and the filter element (221) are used to filter the water flow carrying impurities including micro wire dust; A curved structure is provided at the highest point of the siphon pipeline (710), and the water inlet of the siphon pipeline (710) is higher than the water outlet; The siphon pipeline (710) is provided with a valve member (730) for controlling its on-off function.

2. A drainage structure for washing equipment according to claim 1, characterized in that: The siphon pipeline (710) is connected to a multi-channel (720) at a position between its water inlet and the curved structure; The multi-channel (720) is also in communication with the drainage pipeline (320); The multi-channel (720) comprises a valve component (730), and the valve component (730) is used to control the opening and closing of the siphon pipeline (710) and the drainage pipeline (320) at the multi-channel (720).

3. A drainage structure for washing equipment according to claim 2, characterized in that: An air duct is provided inside the multi-head channel (720), the air duct is connected to the siphon pipeline (710) and the connecting pipeline (770), the air duct has an air inlet connected to the external atmosphere, and the valve member (730) for controlling the conduction and blocking of the air inlet is provided at the air inlet; The connecting pipeline (770) is connected to the drainage pipeline (320).

4. A drainage structure for washing equipment according to claim 3, characterized in that: A connecting piece (330) is provided on the drainage pipeline (320), and the connecting piece (330) is in communication with the connecting pipeline (770); The curved structure is at least partially inserted into the interior of the connecting member (330).

5. A drainage structure for washing equipment according to claim 4, characterized in that: The curved structure comprises a first curved portion (740) and a second curved portion (750); The siphon pipeline (710) partially extends vertically upward, and bends to one side at the end of the extension to the highest point in the vertical direction, forming the first bend (740); The siphon pipeline (710) bends downward from the highest point to form the second bend (750).

6. A drainage structure for washing equipment according to claim 5, characterized in that: The second curved portion (750) is arranged in the drainage pipeline (320) and forms a pipe-in-pipe structure with the drainage pipeline (320); the drainage pipeline (320) forms a third curved portion (760) at the second curved portion (750).

7. A drainage structure for washing equipment according to claim 6, characterized in that: The third curved portion (760) is located close to the opening of the upper portion of the washing device; The drainage pipeline (320) extends from the third curved portion (760) to the water outlet of the siphon pipeline (710), and forms a pipe-in-pipe structure with the siphon pipeline (710).

8. A drainage structure for washing equipment according to claim 7, characterized in that: The siphon pipeline (710) is located at the water outlet inside the drainage pipeline (320) and is not longer than the opening of the drainage pipeline (320) outside it.

9. A washing device, characterized in that: The washing device is provided with the drainage structure of the washing device according to any one of claims 1 to 8.

10. A control method for a washing device according to claim 9, characterized in that: The washing device comprises a valve member (730) for controlling the connection and disconnection between the siphon pipeline (710) and the external atmosphere; The control method of the washing equipment comprises: Before stopping the operation of the drainage device (220), the washing equipment opens the valve member (730) to allow the siphon pipeline (710) to communicate with the external atmosphere.

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