Drain assembly and washing apparatus

Abstract

The application belongs to the technical field of household appliances, and discloses a drainage assembly and a washing equipment, the drainage assembly comprising: a water inlet cavity, having at least two water inlet chambers capable of being independently watered; a water outlet cavity, communicating with each water inlet chamber, the water outlet cavity having a drainage outlet; a water leakage prevention mechanism, arranged at the communication between each water inlet chamber and the water outlet cavity, for preventing water flow from the water outlet cavity into the water inlet chamber; and an air exchange mechanism, for communicating the water outlet cavity with an external space and balancing the air pressure inside and outside the water outlet cavity. In the application, the drainage water flow enters the water outlet cavity from the water inlet chamber through the water leakage prevention mechanism, but cannot pass through the water leakage prevention mechanism in the reverse direction, so that the problem of drainage flow between different water inlet chambers can be prevented; when negative pressure is generated in the water outlet cavity of the drainage assembly, external air can be introduced through the air exchange mechanism to destroy the formation of negative pressure, thereby preventing the normal washing water in the washing unit which has not been drained from being sucked out in the negative pressure environment.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and in particular relates to a drainage structure of an electrical appliance, specifically, to a drainage component and a washing device. Background Art

[0002] Washing machines with two or more washing units, such as multi-drum washing machines, often employ an integrated drainage structure to simplify drainage. This structure collects the drainage water from multiple drums and discharges it through a common drainage path. However, this solution can cause drainage water to flow into other drums during drainage, potentially contaminating clothing in those drums.

[0003] On the other hand, when one of the washing units in the washing machine is draining, especially when a washing unit with a relatively large drainage flow is draining, negative pressure is likely to form in the downstream area of ​​the integrated drainage structure. If other washing units are operating with water in their drums at this time, the negative pressure in the integrated drainage structure may drain the wash water normally used in the drums of other washing units, affecting their normal operation.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and, on the one hand, to provide a drainage component that can prevent drainage cross-flow problems and destroy the negative pressure generated during drainage, thereby preventing the normal washing water from being drawn out.

[0006] On the other hand, the present invention provides a washing device having the above-mentioned drainage component, which can prevent drainage from flowing across different washing units, and at the same time avoid the problem of negative pressure at the drainage component when one washing unit drains water, thereby pumping out water used for normal washing in other washing units.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A drainage assembly, comprising:

[0009] A water inlet cavity having at least two water inlet chambers capable of independent water inlet;

[0010] a water outlet cavity, connected to each of the water inlet chambers, and having a drainage outlet;

[0011] An anti-water flow mechanism is provided at the connection point between each water inlet chamber and the water outlet chamber, and is used to prevent water from flowing from the water outlet chamber into the water inlet chamber;

[0012] The ventilation mechanism is used to connect the water outlet cavity with the external space and balance the air pressure inside and outside the water outlet cavity.

[0013] Furthermore, the ventilation mechanism includes a ventilation port provided on the water outlet chamber, and the ventilation port is higher than the drainage outlet.

[0014] Furthermore, the ventilation mechanism has a ventilation channel connected to the ventilation port, and an atmosphere connection port connected to the ventilation channel;

[0015] The ventilation port is arranged inside the shell of the drainage component, the ventilation channel extends in the shell, and the atmosphere connection port is arranged on the shell.

[0016] Furthermore, the ventilation channel has a first air path extending along the cavity wall of the water outlet cavity, and the first air path is connected to the ventilation port.

[0017] Furthermore, a first partition is provided in the shell, the water outlet cavity is located on one side of the first partition, and the first air path is located on the other side of the first partition; the ventilation port runs through both sides of the first partition.

[0018] Furthermore, the water outlet cavity has a water retaining portion spaced apart from the first partition, and a coverage area formed by projecting the water retaining portion onto the first partition at least partially overlaps with the ventilation port.

[0019] Furthermore, the water outlet cavity is arranged on one side of the water inlet cavity;

[0020] The first air path extends between the water inlet cavity and the water outlet cavity along the cavity wall of the water outlet cavity.

[0021] Furthermore, one end of the first air path is connected to the ventilation port, and the other end is connected to the second air path of the ventilation channel; the second air path extends upward from the other end of the first air path and is connected to the atmosphere connection port.

[0022] Furthermore, a one-way air-permeable valve is provided in the upper region of the second air path, for controlling the ventilation channel to flow in a one-way manner from the atmosphere connection port to the ventilation port.

[0023] Furthermore, the water outlet cavity has:

[0024] There are at least two water outlet chambers, each of which is connected to at least one of the water inlet chambers through the anti-water-crossing mechanism;

[0025] A common drainage area, connected to each of the water outlet chambers;

[0026] The drainage outlet and the ventilation port are both arranged in the drainage common area.

[0027] Furthermore, the anti-water overflow mechanism includes an anti-overflow channel for connecting the water outlet chamber and the water inlet chamber;

[0028] The anti-overflow channel bends from one end of the water inlet chamber to the side where the water outlet cavity is located, and is communicated with the water outlet cavity.

[0029] Furthermore, the anti-overflow channel extends upward from one end of the water inlet chamber, bends toward the side where the water outlet cavity is located, and then extends downward to be connected to the water outlet cavity.

[0030] Furthermore, a partition extending upward from the bottom wall is provided inside the housing of the drainage component, one side of the partition forms the water inlet cavity, and the other side forms the water outlet cavity;

[0031] The upper end of the partition is spaced apart from the top wall of the shell to form the anti-overflow channel.

[0032] Furthermore, at least a portion of the partition has a double-layer partition structure, and the ventilation port of the ventilation mechanism is provided on a side of the double-layer partition structure facing the water outlet cavity;

[0033] The interior of the double-layer partition structure is hollow, forming a ventilation channel that is connected to the water outlet cavity through the ventilation port.

[0034] Furthermore, the anti-water-crossing mechanism includes a check structure provided at the connection point between the anti-water-overflow channel and the water outlet chamber, and the check structure conducts one-way communication from the anti-water-overflow channel to the water outlet chamber.

[0035] Furthermore, the backstop structure includes:

[0036] The liquid inlet portion has a liquid flow channel therein which gradually narrows along the conduction direction;

[0037] a liquid outlet portion connected to the end of the liquid inlet portion, with two sides extending parallel to each other, and having an openable and closable liquid outlet slit at the end of the liquid outlet portion;

[0038] The liquid outlet portion is provided with a bending structure protruding to one side.

[0039] Furthermore, the water outlet cavity is arranged on one side of the water inlet cavity; and the first air path extends along the cavity wall of the water outlet cavity away from the water inlet cavity.

[0040] A washing device comprises the drainage assembly described above, wherein at least two washing units of the washing device are connected to the respective water inlet chambers of the drainage assembly in a one-to-one correspondence.

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

[0042] In the present application, the water drainage assembly can be applied to a washing device with two or more washing units, wherein each water inlet chamber independently introduces the water flow from different washing units into the water drainage assembly and then collects the water flow into the water outlet cavity for unified drainage, which can simplify the water drainage structure of the washing device to the outside. The water flow enters the water outlet cavity through the anti-water leakage mechanism of the water inlet chamber, but cannot pass through the anti-water leakage mechanism in the reverse direction, which can prevent the water leakage between different water inlet chambers. When the negative pressure is generated in the water outlet cavity of the water drainage assembly, the external air can be introduced through the air exchange mechanism to destroy the formation of the negative pressure, thereby preventing the normal washing water in the washing unit that has not been drained from being sucked out due to the negative pressure environment.

[0043] In the present application, the air exchange opening is arranged inside the shell of the water drainage assembly and communicates with the external space along the air exchange channel, so that the air exchange opening is not exposed on the surface of the shell. In particular, when the water drainage pressure is too large or the water drainage at the water drainage outlet is not smooth, causing water accumulation in the water outlet cavity, the water flow overflowing from the air exchange opening can remain in the air exchange channel, and the problem of water leakage of the water drainage assembly will not directly occur.

[0044] In the present application, the water outlet cavity and the water inlet chamber are communicated through the anti-water overflow channel. During normal water drainage, the water in the water inlet chamber can enter the water outlet cavity through the anti-water overflow channel, thereby being drained to the outside, and the water in the water outlet cavity cannot flow back to the water inlet chamber through the anti-water overflow channel in the reverse direction, so that the water flow cannot flow between different water inlet chambers, thereby preventing the water leakage between different washing units.

[0045] In the present application, the reverse stop structure can directly prevent the water flow from flowing back from the water outlet cavity to the water inlet chamber. The liquid outlet part of the reverse stop structure has a bending structure, which can prolong the service life of the reverse stop structure and enhance the sealing effect when the water pressure acts on the outside of the liquid outlet part. The anti-water leakage mechanism of the water drainage assembly is provided with the anti-water overflow channel and the reverse stop structure. When the reverse stop structure fails, the anti-water overflow channel can also prevent the water leakage. The two structures are cooperatively arranged to more reliably prevent the water leakage.

[0046] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0047] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, and the schematic embodiments of the present application and their descriptions serve to explain the present application but do not constitute an improper limitation on the present application. Obviously, the accompanying drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without any creative labor. In the drawings:

[0048] Figure 1 and Figure 2 is a structural schematic diagram of the water drainage assembly in the embodiment of the present application;

[0049] Figure 3 is an exploded structural diagram of the water drainage assembly in the embodiment of the present application;

[0050] Figure 4 is a sectional view of the water drainage assembly in the embodiment of the present application at one side of the water outlet cavity;

[0051] Figure 5 is an enlarged schematic diagram of A in the embodiment of the present application; Figure 4

[0052] Figure 6 is a sectional view of the water drainage assembly in the embodiment of the present application;

[0053] Figure 7 is a sectional view of the water drainage assembly in the embodiment of the present application at one side of the water inlet cavity;

[0054] Figures 8 to 10 is a sectional view of the water drainage assembly in the embodiment of the present application along the vertical face in the front-rear direction (the check structure is not shown);

[0055] Figure 11 is a structural schematic diagram of the water drainage assembly without the upper cover in the embodiment of the present application;

[0056] Figure 12 is an internal structural schematic diagram of the upper cover in the embodiment of the present application;

[0057] Figure 13 is a bottom structural schematic diagram of the first shell in the embodiment of the present application;

[0058] Figure 14 is an internal structural schematic diagram of the second shell in the embodiment of the present application;

[0059] Figure 15 is an exploded structural diagram of the check structure in the embodiment of the present application;

[0060] Figure 16 is a sectional view of the check structure in the embodiment of the present application;

[0061] Figure 17 is an enlarged schematic diagram of B in the embodiment of the present application; Figure 4

[0062] Figure 18 is a schematic diagram of the check structure pressing block in the embodiment of the present application.

[0063] ​​In the figure: 100, water inlet cavity; 110, water inlet chamber; 120, water inlet; 200, water outlet cavity; 210, water outlet chamber; 211, boss; 220, drainage outlet; 230, additional water inlet; 240, common drainage area; 241, water collecting groove; 300, housing; 301, first cavity; 302, second cavity; 310, first shell; 320, second shell; 330, upper cover; 331, gas path top cover; 332 , waterway cover; 410, partition; 411, first partition; 4111, first notch; 412, second partition; 413, third partition; 414, connecting portion; 4141, water retaining portion; 4142, second rib; 4143, second notch; 421, upper water inlet partition; 422, middle water inlet partition; 423, lower water inlet partition; 431, upper water outlet partition; 432, lower water outlet partition; 441, upper air-water partition; 44 2. Middle air-water baffle; 443. Lower air-water baffle; 500. Anti-overflow channel; 600. Ventilation mechanism; 610. Ventilation port; 620. Atmosphere connection port; 630. Ventilation channel; 631. First air path; 6311. Water collection trough; 632. Second air path; 633. Inhalation air path; 640. One-way air valve; 641. Valve core; 642. Seal; 650. Air path baffle; 651. Vertical portion; 652. Horizontal portion. 6521, first guide portion; 6522, second guide portion; 6523, through hole; 660, limit column; 700, check structure; 710, valve body; 711, liquid inlet portion; 712, liquid outlet portion; 7121, bending structure; 713, liquid outlet gap; 714, mounting portion; 720, pressing block; 721, extrusion portion; 7211, first rib; 722, skeleton support; 7221, plug-in portion; 7222, support sheet.

[0064] 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 rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0065] 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.

[0066] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0067] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0068] like Figures 1 to 18 As shown, an embodiment of the present invention provides a drainage assembly applied to a washing device, and a washing device having the drainage assembly.

[0069] Specifically, the washing machine can be a household appliance with a washing function, such as a washing machine, a washer-dryer, or a dishwasher. The washing machine has two or more washing units, each of which is connected to the drainage assembly. The drainage assembly has a drainage outlet 220, which is connected to the main drainage pipe of the washing machine.

[0070] By adopting the above solution, the drainage of each washing unit is collected at the drainage assembly, and the drainage outlet 220 of the drainage assembly is then connected to the drainage main pipe, thereby achieving the purpose of integrated drainage.

[0071] In a specific embodiment, the washing device is a laundry processing device having a laundry washing function, such as a multi-drum washing machine, wherein each washing unit of the washing device has a drum assembly capable of independently holding water for washing laundry. The drum assembly of each washing unit is respectively connected to the drainage assembly, and an integrated drainage effect is achieved through the drainage assembly.

[0072] In one specific embodiment, each cartridge assembly is connected to a drain pump, which can independently control the drainage of each cartridge assembly. When the drain pump is activated, the cartridge assembly connected to it drains water outward through the drain pump. When the drain pump is deactivated, the corresponding cartridge assembly does not drain water outward.

[0073] In the above solution, each washing unit independently drains water into the drain assembly. The drain water flows through the drain assembly into the main drain pipe, ultimately exiting the washing machine. Because the drainage paths of each washing unit converge at the drain assembly, if some washing units are draining while others are not, the drain water entering the drain assembly may flow into the unused washing units, posing the risk of cross-contamination and contamination of clothing in other washing units.

[0074] On the other hand, when one washing unit is draining water, if the drainage flow rate is large, a certain negative pressure will be generated in the area of ​​the drainage assembly near the drainage outlet 220. The other washing units are connected to the drainage outlet 220 of the drainage assembly. If the negative pressure is too large, the wash water normally used in the other washing units may be pumped out, affecting the operation of the other washing units.

[0075] In order to solve the above problems, the embodiments of the present invention further adopt the following technical solutions.

[0076] The drainage assembly of this embodiment comprises an inlet chamber 100 and an outlet chamber 200 arranged along the drainage direction. The inlet chamber 100 has at least two independent water inlet chambers 110, which are connected to each washing unit in a one-to-one correspondence. The outlet chamber 200 is provided with a drainage outlet 220 for discharging water.

[0077] The drainage assembly is equipped with a water flow prevention mechanism and a ventilation mechanism 600. The water flow prevention mechanism is located at the connection point between each water inlet chamber 110 and the water outlet chamber 200, preventing water from flowing from the water outlet chamber 200 into the water inlet chamber 110. The ventilation mechanism 600 connects the water outlet chamber 200 with the space outside the drainage assembly, thereby balancing the air pressure inside and outside the water outlet chamber 200.

[0078] In the above solution, during the drainage process, the drainage water from different washing units enters the corresponding water inlet chamber 110, then flows to the water outlet chamber 200, and finally flows out from the drainage outlet 220. The drainage water flows from the water inlet chamber 110 through the anti-water cross-flow mechanism and enters the water outlet chamber 200. However, the water cannot flow back through the anti-water cross-flow mechanism, that is, it cannot flow back from the water outlet chamber 200 to the water inlet chamber 110. Therefore, the drainage water does not flow into other water inlet chambers 110, thereby preventing the problem of drainage cross-flow between different washing units.

[0079] When the drain water flows through the water outlet chamber 200, causing the pressure inside the water outlet chamber 200 to decrease, the ventilation mechanism 600 can introduce external air into the water outlet chamber 200, thereby breaking the negative pressure. In this way, when some washing units are draining, it can effectively prevent excessive negative pressure from forming in the water outlet chamber 200, which could drain the wash water normally used in other washing units.

[0080] Specifically, in this embodiment, the ventilation mechanism 600 at least includes a ventilation port 610 provided on the water outlet chamber 200 . The ventilation port 610 is communicated with the external space and is provided at a position higher than the drainage outlet 220 .

[0081] With the above structure, by providing a ventilation port 610 on the water outlet chamber 200, external air can enter the water outlet chamber 200 in a timely manner through the ventilation port 610. The ventilation port 610 is higher than the drain outlet 220. During normal drainage, the drainage water flow continues to be discharged from the drain outlet 220 and does not flow out of the ventilation port 610.

[0082] In a further embodiment, the drainage assembly includes a housing 300, with a water inlet chamber 100 and a water outlet chamber 200 formed within the housing 300. The ventilation mechanism 600 further includes a ventilation channel 630 extending within the housing 300. A ventilation port 610 is disposed within the housing 300 and connected to the ventilation channel 630, communicating with the external space of the housing 300 along the ventilation channel 630.

[0083] Specifically, in this embodiment, except for being connected at the ventilation port 610, the ventilation channel 630 is completely isolated from the chambers forming the water inlet chamber 100 and the water outlet chamber 200, so that the air inlet path and the drainage path of the drainage water flow do not interfere with each other.

[0084] Furthermore, the ventilation mechanism 600 further includes an atmospheric connection port 620 provided on the housing 300, and the ventilation channel 630 is connected to the atmospheric connection port 620, thereby communicating with the external space of the housing 300 through the atmospheric connection port 620. Specifically, the atmospheric connection port 620 passes through both the inside and outside of the housing 300, allowing the ventilation channel 630 to communicate with the external space.

[0085] In the above solution, the ventilation port 610 is connected to the atmospheric connection port 620 along the ventilation channel 630. When the drain water flows through the water outlet chamber 200, the air pressure in the water outlet chamber 200 tends to decrease, and the air pressure in the ventilation channel 630, which is connected to the water outlet chamber 200 through the ventilation port 610, also tends to decrease. In this way, external air can be drawn in through the atmospheric connection port 620, and the air flow flows along the ventilation channel 630 to the ventilation port 610, and finally enters the water outlet chamber 200 from the ventilation port 610. This prevents the formation of excessive negative pressure in the water outlet chamber 200 and allows the normal use of wash water in other washing units to be drawn out.

[0086] In this embodiment, when drainage pressure is excessive, or drainage from the main drain pipe connected to the drain outlet 220 is poor, water may accumulate within the water outlet chamber 200, creating a risk of drainage water flowing through the ventilation port 610 and overflowing the water outlet chamber 200. The ventilation port 610 is disposed within the housing 300 and communicates with the outside along a ventilation channel 630, rather than being directly disposed on the outer surface of the housing 300. This allows any small amount of drainage water that overflows the ventilation port 610 to be contained within the ventilation channel 630 rather than overflowing the housing 300, thereby reducing the risk of leakage from the drain assembly.

[0087] In the preferred embodiment of the present application, the height of the atmospheric connection port 620 is higher than the height of the air exchange port 610. In this way, the water flow overflowing from the air exchange port 610 into the air exchange channel 630 can only reach the atmospheric connection port 620 when the water level in the water outlet cavity 200 is at the same height as the atmospheric connection port 620. In general, even if the water flow overflows into the air exchange channel 630, the amount of overflow is limited, further reducing the risk of water leakage from the atmospheric connection port 620.

[0088] In the present embodiment, the atmospheric connection port 620 can be directly connected to the atmosphere, or can be connected to the atmosphere through a gas inlet pipe. In the preferred structure, the atmospheric connection port 620 is protruded from the outer surface of the housing 300, facilitating connection with the gas inlet pipe.

[0089] In one specific embodiment, the drainage assembly is used in a washing device and is installed inside the cabinet of the washing device. The gas inlet pipe can be connected to the atmospheric connection port 620 and extends out of the cabinet to achieve atmospheric communication, thereby achieving the effect of breaking the negative pressure in the water outlet cavity 200.

[0090] In another specific embodiment, the atmospheric connection port 620 can also be connected to other devices inside the washing device that are connected to the atmosphere, such as the drum assembly of the washing device.

[0091] As a more preferred embodiment, the air exchange mechanism 600 of the present application allows one-way communication from the external space to the inside of the water outlet cavity 200. Specifically, external air can enter the water outlet cavity 200 through the air exchange mechanism 600, but even if the water outlet cavity 200 overflows at the air exchange port 610, the water flow cannot flow back through the air exchange mechanism 600 to the outside of the drainage assembly.

[0092] By setting the air exchange mechanism 600 to allow one-way communication, it is possible to more effectively prevent the drainage assembly from leaking through the air exchange mechanism 600, making the drainage assembly more reliable.

[0093] In a specific embodiment, the air exchange mechanism 600 of the present application includes a one-way air valve 640 for achieving the one-way communication effect. In one specific embodiment, the one-way air valve 640 is arranged in the air exchange channel 630 and allows one-way communication from the atmospheric connection port 620 to the air exchange port 610.

[0094] In a further embodiment of the present application, the air exchange channel 630 has a first air path 631 and a second air path 632 connected thereto, wherein the second air path 632 is connected to the atmospheric connection port 620. The first air path 631 extends along the cavity wall of the water outlet cavity 200 and is connected to the air exchange port 610, so that the water outlet cavity 200 and the first air path 631 of the air exchange channel 630 can be connected through the air exchange port 610.

[0095] As a specific embodiment, the first partition plate 411 is arranged in the shell 300, the water outlet cavity 200 is arranged on one side of the first partition plate 411, the first air path 631 is arranged on the other side of the first partition plate 411, and the air exchange opening 610 is arranged at least partially on the first partition plate 411 and penetrates through the two sides of the first partition plate 411.

[0096] In the above scheme, the two side surfaces of the first partition plate 411 form the inner walls of the water outlet cavity 200 and the first air path 631 respectively, and the air exchange opening 610 is arranged to penetrate through the first partition plate 411, so as to communicate the water outlet cavity 200 and the first air path 631 on the two sides of the first partition plate 411.

[0097] As a specific embodiment, the upper part of the water outlet cavity 200 is communicated with each water inlet chamber 110 through the water leakage prevention mechanism, the water outlet cavity 200 is arranged to extend downward, and the water outlet 220 is arranged in the lower region. The drainage flow flows from top to bottom in the water outlet cavity 200 and is discharged through the water outlet 220.

[0098] The first partition plate 411 is arranged in the vertical direction, and if the drainage flow flows along the surface of the first partition plate 411, there is a risk that the drainage flow splashes into the first air path 631 when passing near the air exchange opening 610. Therefore, in the preferred scheme of the present embodiment, a water blocking part 4141 is arranged in the water outlet cavity 200 to reduce the splashing of the water flow from the air exchange opening 610.

[0099] Specifically, as shown in Figure 8 and Figure 9 , the water blocking part 4141 is arranged spaced apart from the first partition plate 411, and the coverage area formed by the projection of the water blocking part 4141 to the first partition plate 411 at least partially overlaps the air exchange opening 610. More specifically, the upper side of the water blocking part 4141 is connected to the inner wall of the water outlet cavity 200 and is arranged to extend downward and spaced apart to shield the side of the air exchange opening 610 facing the water outlet cavity 200 (i.e., the rear side in Figure 8 ).

[0100] The water blocking part 4141 has a spacing with the plane where the air exchange opening 610 is arranged, which does not affect the air in the first air path 631 entering the water outlet cavity 200 through the air exchange opening 610. When the drainage flow flows downward in the water outlet cavity 200 and reaches a position close to the height of the air exchange opening 610, it will flow along the rear surface of the water blocking part 4141, thereby bypassing the air exchange opening 610. That is, the rear surface of the first partition plate 411 in the region around the air exchange opening 610 almost does not contact the drainage flow, effectively preventing the problem of the drainage flow splashing from the air exchange opening 610.

[0101] In this embodiment, the water outlet chamber 200 is arranged at the rear side of the water inlet chamber 100. Specifically, each water inlet chamber 110 in the water inlet chamber 100 extends from bottom to top, and the anti-water flow mechanism is arranged at the upper part of the drainage assembly to connect the water inlet chamber 110 with the water outlet chamber 200.

[0102] As a further approach, see Figures 8 to 11 The first air path 631 of the ventilation channel 630 is arranged between the water inlet chamber 100 and the water outlet chamber 200 and extends along the cavity wall of the water outlet chamber 200.

[0103] Specifically, the upper portions of the water inlet chamber 100 and the water outlet chamber 200 are connected via a water-crossing prevention mechanism, while the middle and lower regions are separated by a partition 410. At least a portion of the partition 410 comprises a double-layered baffle structure, the interior of which is hollow, forming a first air path 631. It will be understood that in the above embodiment, the first baffle 411 constitutes the baffle on the side of the double-layered baffle structure closest to the water outlet chamber 200, and the ventilation port 610 provided on the first baffle 411 communicates with the interior of the double-layered baffle structure.

[0104] In a specific structure, combined Figure 8 and Figure 9 As shown, the middle areas of the water inlet chamber 100 and the water outlet chamber 200 are separated by a single-layer third partition 413, while the lower areas are separated by a double-layer partition structure consisting of a first partition 411 and a second partition 412 spaced apart. The first partition 411 is positioned closer to the water outlet chamber 200. Thus, the lower areas of the water inlet chamber 100 and the water outlet chamber 200 are spaced apart in the front-to-back direction in the figure, forming a first air path 631 using the space between them.

[0105] As another further solution, the water inlet cavity and the water outlet cavity may be located on the same side of the first air path. In other words, the first air path may extend along the wall of the water outlet cavity away from the water inlet cavity.

[0106] Specifically, the water inlet and outlet chambers, except for the upper communicating area, are separated by a single-layer partition structure. The first partition forms a portion of the wall of the water outlet chamber on the side away from the water inlet chamber. The ventilation port is provided on the side of the water outlet chamber away from the water inlet chamber. The first air path extends on the side of the water outlet chamber facing away from the water inlet chamber and is connected to the ventilation port.

[0107] In one detailed structure, the first partition is spaced apart from one side wall of the housing of the drainage assembly, forming the first air path therebetween. The partition and the first partition are spaced apart from each other within the housing, forming the water outlet cavity between the partition and the first partition, and forming the water inlet cavity on the other side of the partition.

[0108] In a further embodiment of the present invention, the anti-water spill mechanism includes an anti-overflow channel 500 for connecting the water outlet chamber 200 with the water inlet chamber 110. The anti-overflow channel 500 prevents water from overflowing from the water outlet chamber 200 into the water inlet chamber 110. The ventilation port 610 is positioned a certain distance from the connection point between the water outlet chamber 200 and the anti-overflow channel 500 to prevent the drain water from splashing out of the ventilation port 610 when entering the water outlet chamber 200 through the anti-overflow channel 500.

[0109] By setting up the anti-overflow channel 500, during normal drainage, the drainage water flow can only enter the water outlet chamber 200 from the water inlet chamber 110 through the anti-overflow channel 500, and will not flow back to the water inlet chamber 110 from the water outlet chamber 200. In this way, it can prevent the drainage water of one water inlet chamber 110 from overflowing through the water outlet chamber 200 to other water inlet chambers 110, thereby causing the problem of drainage cross-flow between different washing units.

[0110] Specifically, in this embodiment, see Figure 8 and Figure 9 The anti-overflow channel 500 bends from one end of the water inlet chamber 110 to the side where the water outlet chamber 200 is located, and is connected to the water outlet chamber 200. More specifically, the anti-overflow channel 500 extends upward from one end of the water inlet chamber 110, bends to the side where the water outlet chamber 200 is located, and then extends downward to be connected to the water outlet chamber 200.

[0111] With the above solution, the anti-overflow channel 500 forms an inverted U-shaped water flow path. On the side connected to the water inlet chamber 110, as the drainage water continuously enters the water inlet chamber 110, the water can pass through the bend of the anti-overflow channel 500 and then flow from the water inlet chamber 110 into the water outlet chamber 200. In the water outlet chamber 200, the drainage water continuously flows out through the drainage outlet 220 and is usually unable to pass through the bend of the anti-overflow channel 500. This prevents the water outlet chamber 200 from overflowing into the water inlet chamber 110, which would cause drainage cross-flow problems.

[0112] In a specific structure of this embodiment, the water inlet chamber 110 extends from bottom to top, and its upper area is connected to one end of the overflow prevention channel 500. The water outlet chamber 200 extends downward from the other end of the overflow prevention channel 500, and the drainage outlet 220 is provided in the lower area of ​​the water outlet chamber 200.

[0113] In the above scheme, the water inlet chamber 110, the anti-overflow channel 500 and the water outlet chamber 200 form an inverted U-shaped structure as a whole. During normal drainage, as long as the liquid level on one side of the water outlet chamber 200 does not reach the lowest point of the bending position of the anti-overflow channel 500, the drainage water will not flow back into the water inlet chamber 110.

[0114] Further, the housing 300 is internally provided with a partition 410 extending upward from the bottom wall, and the water inlet cavity 100 is formed at the front side of the partition 410, and the water outlet cavity 200 is formed at the rear side of the partition 410. The upper end of the partition 410 is spaced apart from the top wall of the housing 300, and the spacing therebetween forms a water overflow prevention channel 500 to connect the water inlet chamber 110 and the water outlet cavity 200.

[0115] Further, the water inlet cavity 100 is provided with at least one water inlet partition extending upward from the bottom wall to the top wall, and the water inlet cavity 100 is divided into a plurality of water inlet chambers 110 by the water inlet partition.

[0116] As a specific embodiment, the first air passage 631 of the air exchange passage 630 is arranged between the water inlet cavity 100 and the water outlet cavity 200, and the first partition 411 constitutes a part of the partition 410.

[0117] Specifically, the partition 410 includes a first partition 411 and a second partition 412 located at the lower part, and a third partition 413 located at the upper part. The first partition 411 and the second partition 412 are spaced apart and extend upward from the bottom wall of the housing 300, the water inlet cavity 100 is located at the front side of the second partition 412, and the water outlet cavity 200 is located at the rear side of the first partition 411, and the first air passage 631 is formed between the first partition 411 and the second partition 412.

[0118] The upper part of the first partition 411 and the second partition 412 has a connecting part 414 extending to the side of the water outlet cavity 200, i.e. the rear side, and the third partition 413 extends upward from the extension end of the connecting part 414, and the upper end is spaced apart from the top wall of the housing 300 to form a water overflow prevention channel 500 connecting the water inlet chamber 110 and the water outlet cavity 200.

[0119] In the above-mentioned scheme, the air exchange port 610 penetrates through both sides of the first partition 411, and the third partition 413 is arranged in a staggered manner with the first partition 411 in the horizontal direction. The water flow in the water inlet chamber 110 overflows from the upper end of the third partition 413 to the side of the water outlet cavity 200, and most of it flows downward along the third partition 413. Since the first partition 411 is more forward relative to the third partition 413, the water flow is more likely to directly fall from the lower end of the third partition 413, reducing the possibility of the upper part of the first partition 411 contacting the water flow, and further reducing the risk of water splashing from the air exchange port 610.

[0120] Preferably, the air exchange port 610 is arranged at the upper end of the first partition 411, and the extension end of the connecting part 414 has a structure protruding downward to form a water blocking part 4141 for blocking the air exchange port 610.

[0121] More preferably, the rear surface of the water retaining portion 4141 is flush with the rear surface of the third partition 413. In this way, the drainage water flows downward along the third partition 413, and when it reaches the lower end of the third partition 413, it can continue to flow downward along the water retaining portion 4141 without hindrance, and finally falls vertically from the lower end of the water retaining portion 4141, almost without contacting the area near the ventilation port 610 on the first partition 411, thereby better preventing splashing water.

[0122] Furthermore, in this embodiment, the front side of the housing 300 first extends vertically from bottom to top, then tilts rearward, and then continues to extend vertically. Specifically, the height at which the front side of the housing 300 begins to tilt rearward is substantially the same as the height of the connecting portion 414 in the partition 410.

[0123] In the above scheme, the rear side of each water inlet chamber 110 in the water inlet cavity 100 first flows upward along the second baffle 412, then backward along the connecting portion 414, and finally continues upward along the third baffle 413. The rearwardly inclined portion of the front side of the housing 300 allows the front side of each water inlet chamber 110 to also be offset backward relative to the lower portion. This creates a closer horizontal cross-sectional area at the upper and lower ends of the water inlet chamber 110, facilitating a more stable overflow of the drain water into the outlet cavity 200.

[0124] In this embodiment, the water inlet cavity 100 and the water outlet cavity 200 are distributed along a first direction inside the housing 300 , and the water inlet chambers 110 are sequentially arranged in a second direction different from the first direction inside the water inlet cavity 100 .

[0125] As a specific embodiment, the first direction and the second direction are perpendicular to each other, wherein the first direction is the direction from front to back in the figure, and the second direction is the direction from right to left in the figure.

[0126] More specifically, the housing 300 of the drain assembly has a first cavity 301 and a second cavity 302 arranged in a direction opposite to the second direction. Specifically, the first cavity 301 is located to the left of the second cavity 302. The first cavity 301 forms the water inlet chamber 100, the water outlet chamber 200, and the first air path 631 of the ventilation channel 630. The second air path 632 is located within the second cavity 302, and the atmosphere connection port 620 is located on the surface of the housing 300 in an area corresponding to the second cavity 302.

[0127] In a further embodiment, the first air path 631 of the ventilation channel 630 extends along the second direction, i.e., the distribution direction of the water inlet chambers 110, with one end connected to the ventilation port 610 and the other end connected to the second air path 632. The first air path 631 extends from the ventilation port 610 to the junction of the first cavity 301 and the second cavity 302. The second air path 632 extends upward from the end of the first air path 631 within the second cavity 302 and communicates with the atmosphere connection port 620.

[0128] With this solution, the second air path 632 is positioned near one side of the housing 300, facilitating communication with the atmosphere connection port 620 on the surface of the housing 300. The second air path 632 extends upward from one end connected to the first air path 631. When drainage water overflows into the first air path 631 and then flows along the first air path 631 into the second air path 632, the liquid level in the water outlet chamber 200 must be sufficiently high for the liquid level in the second air path 632 to reach the level of the atmosphere connection port 620, causing leakage.

[0129] Even if the liquid level in the outlet chamber 200 rises, it will normally not exceed the height of the upper end of the partition 410. Otherwise, the drainage water will flow back into the water inlet chamber 110, causing drainage cross-flow. In the preferred embodiment, the second air path 632 is configured to extend upward to a height close to or higher than the upper end of the partition 410. This makes it difficult for the liquid level to reach the upper end of the second air path 632, thereby minimizing the risk of water leakage along the ventilation channel 630.

[0130] Furthermore, when a one-way air valve 640 is provided in the ventilation channel 630, it is preferably installed in the upper region of the second air passage 632. This prevents the liquid level in the second air passage 632 from reaching the installation height of the one-way air valve 640 in the event of a small amount of water overflow, making it less likely for the one-way air valve 640 to come into contact with water, thereby extending its service life.

[0131] Specifically, the ventilation channel 630 further includes an intake air path 633, which is connected to the atmosphere connection port 620 and the second air path 632. A one-way air valve 640 is provided at the connection between the intake air path 633 and the second air path 632, providing one-way communication from the intake air path 633 to the second air path 632. This allows external air to be drawn in along the ventilation channel 630 to balance the air pressure within the water outlet chamber 200. However, if drainage water overflows into the ventilation channel 630, it cannot enter the intake air path 633 through the second air path 632 and therefore does not flow out of the atmosphere connection port 620.

[0132] As a specific implementation method, Figure 10 and Figure 11As shown, the second air path 632 extends upward from the end of the first air path 631 to a certain height, and the upper region is bent to the rear side. The suction air path 633 is arranged below the bent region of the second air path 632 and extends upward to connect with the second air path 632.

[0133] More specifically, in the present embodiment, the second air path 632 and the suction air path 633 are both arranged in the second cavity 302. An air path partition 650 is arranged in the second cavity 302, thereby forming the second air path 632 and the suction air path 633 on both sides of the air path partition 650.

[0134] As a specific embodiment, the housing 300 has an air-water partition arranged in the height direction, and the first cavity 301 and the second cavity 302 are formed on both sides of the air-water partition. The partition 410 is arranged in the first cavity 301 and connected to the left side of the housing 300 on one side and to the air-water partition on the other side. The air-water partition has a notch structure, thereby connecting the first air path 631 and the second air path 632.

[0135] The air path partition 650 has a vertical portion 651 extending upward from the bottom wall of the second cavity 302 to a certain height, and a horizontal portion 652 extending to one side from the upper end of the vertical portion 651. The one-way air valve 640 is installed on the horizontal portion 652.

[0136] As a specific embodiment, the horizontal portion 652 is provided with a through hole 6523, and the second air path 632 and the suction air path 633 are connected through the through hole 6523. The one-way air valve 640 is movably installed at the through hole 6523, thereby opening or blocking the through hole 6523.

[0137] Specifically, the one-way air valve 640 has a valve core 641 movably arranged in the through hole 6523, and a sealing member 642 connected to the valve core 641. By sealing contact between the sealing member 642 and the inner peripheral wall of the through hole 6523, the blocking effect of the through hole 6523 is achieved.

[0138] More specifically, the sealing member 642 is a sealing ring sleeved on the outside of the valve core 641. The side wall of the valve core 641 is provided with a sealing fitting groove, and the sealing member 642 is embedded in the sealing fitting groove.

[0139] In the above scheme, if negative pressure is generated within the water outlet chamber 200, the air pressure in the first air path 631 and the second air path 632, which are directly connected to the water outlet chamber 200, also decreases synchronously. The suction air path 633, connected to the outside space via the atmosphere connection port 620, matches the air pressure of the outside space, thereby generating an air pressure differential between the second air path 632 and the suction air path 633. This pressure differential can push the valve core 641 upward, separating the seal 642 from the inner circumferential wall of the through hole 6523. This allows outside air to pass through the through hole 6523 and into the water outlet chamber 200 along the ventilation channel 630, thereby breaking the negative pressure environment within the water outlet chamber 200.

[0140] If drainage water overflows to the upper end of the second air passage 632, the water pressure exerts downward pressure on the valve core 641, pressing the valve core 641 against the through hole 6523, causing the seal 642 to fit tightly against the inner wall of the through hole 6523. This prevents the overflowing drainage water from passing through the through hole 6523 and flowing out of the atmosphere connection port 620.

[0141] As a preferred embodiment, the inner diameter of the through hole 6523 gradually decreases from top to bottom, which can better cooperate with the sealing member 642 and enhance the sealing effect when the through hole 6523 is blocked.

[0142] Furthermore, the outer periphery of the through-hole 6523 comprises a guide structure, and the valve core 641 is restricted in its up and down movement within the guide structure. Specifically, the guide structure comprises a first guide portion 6521 extending upward from the outer periphery of the through-hole 6523, and a second guide portion 6522 extending downward. The valve core 641 is restricted in its up and down movement within the slideway formed by the first and second guide portions 6521, 6522. The first and second guide portions 6521, 6522 are each cylindrical structures that limit the horizontal displacement of the valve core 641, ensuring its up and down movement, thereby opening or closing the through-hole 6523.

[0143] Specifically, the inner diameter of the first guide portion 6521 is larger than the inner diameter of the second guide portion 6522, thereby adapting to the inner diameter of the through hole 6523 that gradually decreases from top to bottom. Accordingly, the maximum distance between the outer peripheral wall of the upper part of the valve core 641 and the central axis of the valve core 641 is greater than the maximum distance between the outer peripheral walls of other parts of the valve core 641 and the central axis of the valve core 641. In this way, the structure of the valve core 641 can be adapted to the first guide portion 6521 and the second guide portion 6522 respectively. At the same time, the lower part of the valve core 641 can pass through the through hole 6523 and enter the inner side of the first guide portion 6521, ensuring that the valve core 641 can move upward, separating the sealing member 642 from the inner peripheral wall of the through hole 6523, and connecting the two sides of the through hole 6523.

[0144] Preferably, the upper end of the first guide portion 6521 is substantially flush with the upper end of the partition portion 410 inside the first cavity 301. For example, the height difference between the two can be controlled within 1 cm. When the drainage water overflows into the second air path 632 and the liquid level exceeds the height of the horizontal portion 652, the liquid level needs to rise further to cover the upper end of the first guide portion 6521 before it can overflow into the inside of the first guide portion 6521. Under normal circumstances, water entering the first guide portion 6521 will press the one-way air valve 640, preventing the overflow from passing through the through hole 6523. Even if the one-way air valve 640 fails, the liquid level needs to exceed the upper end of the first guide portion 6521 before it can flow out of the through hole 6523, further reducing the risk of water leakage.

[0145] In a preferred embodiment, a downwardly projecting limiting post 660 is provided on the top wall of the second cavity 302. The lower end of the limiting post 660 extends into the upper opening of the first guide portion 6521. The limiting post 660 limits the maximum upward movement of the valve core 641 when the one-way air valve 640 opens the through-hole 6523, preventing the valve core 641 from moving upward excessively and dislodging from the guide structure, thereby preventing it from returning to its original position and resealing the through-hole 6523.

[0146] In this embodiment, the atmosphere connection port 620 is located slightly below the horizontal portion 652 of the air path partition 650, so as to introduce external air into the space below the one-way air permeability valve 640. Therefore, the vertical height of the air inlet 633 is not restricted.

[0147] In a preferred embodiment, the suction air path 633 extends downward for a certain length below the one-way air valve 640, and the atmosphere connection port 620 is positioned as close as possible to the upper end of the suction air path 633. For example, the lower end of the suction air path 633 can be aligned with the lower end of the second air path 632, resulting in a more uniform overall structure and ease of manufacture.

[0148] In the above embodiment, the air intake passage 633 extends downward for a certain length, providing a water storage space. Even if some water leaks into the air intake passage 633 before the one-way air valve 640 completely blocks the through hole 6523, it can drip to the lower end of the air intake passage 633 and will not flow out of the atmosphere connection port 620 at the upper end.

[0149] In a further embodiment of the present invention, the water outlet cavity 200 includes at least two water outlet chambers 210 and a common drainage area 240 connected to each of the water outlet chambers 210. The drainage outlet 220 is provided in the common drainage area 240. Each of the water outlet chambers 210 is connected to at least one water inlet chamber 110 via an anti-overflow channel 500.

[0150] Specifically, the common drainage area 240 is located below the outlet chambers 210, and the drainage outlets 220 are located below the common drainage area 240. Drainage water entering the outlet chambers 210 from the water inlet chamber 100 is collected in the common drainage area 240 and discharged through the drainage outlets 220. The overflow prevention channels 500 are provided in a one-to-one correspondence with the outlet chambers 210, meaning that the number of overflow prevention channels 500 and outlet chambers 210 is the same.

[0151] As a specific implementation, the number of water outlet chambers is smaller than the number of water inlet chambers. It can be specifically set according to actual conditions so that two or more water inlet chambers share one water outlet chamber, and some water outlet chambers can be connected to only one water inlet chamber.

[0152] As a preferred embodiment, the number of the water outlet chambers 210 is the same as the water inlet chambers 110, and each water outlet chamber 210 is provided in a one-to-one correspondence with the water inlet chamber 110. Accordingly, a plurality of anti-overflow channels 500 are also provided to connect the water inlet chamber 110 and the water outlet chamber 210 in a one-to-one correspondence.

[0153] With this solution, the inlet chamber 110 and the corresponding outlet chamber 210 are connected to form a drainage channel. The drainage assembly is equipped with multiple independent drainage channels, each of which is isolated from the others throughout the inlet chamber 110, the overflow prevention channel 500, and the upper area of ​​the outlet chamber 210. This ensures that drainage water does not flow across different drainage channels within these areas. Drainage flows from different drainage channels only converge after merging into the common drainage area 240 at the lower end of the outlet chamber 210.

[0154] In this way, when the drainage water flows from one water inlet chamber 110 into the corresponding water outlet chamber 210 , the water will not splash into another water inlet chamber 110 , thereby further avoiding the problem of drainage cross-flow.

[0155] In one specific embodiment, the water inlet chambers 110 extend from bottom to top. The lower area of ​​each water inlet chamber 110 is provided with a water inlet 120 for water intake. The upper area of ​​each water inlet chamber 110 is connected to the anti-overflow channel 500. The water outlet chambers 210 are located at the rear side of the corresponding water inlet chamber 110. The anti-overflow channel 500 extends upward from the upper end of the water inlet chamber 110, bends toward the rear side of the water outlet chamber 210, and then extends downward in the opposite direction, connecting to the upper end of the water outlet chamber 210. The water outlet chamber 210 extends downward from the end connected to the anti-overflow channel 500 and is connected to the common drainage area 240.

[0156] In the above scheme, the water inlet chamber 110, the overflow prevention channel 500, and the water outlet chamber 210 are connected in sequence to form an inverted U-shaped drainage channel. When one of the washing units of the washing machine is draining, the drainage water enters the corresponding water inlet chamber 110 through the water inlet 120 connected to the washing unit, flows upward along the water inlet chamber 110, overflows from the top of the water inlet chamber 110, enters the water outlet chamber 210 on one side of the water inlet chamber 110 through the overflow prevention channel 500, then flows downward along the water outlet chamber 210 into the common drainage area 240, and is finally discharged through the drainage outlet 220.

[0157] Each outlet chamber 210 is connected to the common drainage area 240. As long as the liquid level in the outlet chamber 200 does not exceed the lower end of the outlet chamber 210, the drainage water will not flow into other outlet chambers 210. Even if the liquid level in the outlet chamber 200 rises into the outlet chamber 210 due to excessive drainage pressure or a blockage in the main drainage pipe, as long as the liquid level does not exceed the height of the bend in the overflow prevention channel 500, the drainage water will not flow back into other inlet chambers 110, thus preventing drainage from flowing into other inlet chambers 110.

[0158] As a specific structure, the bottom wall of the common drainage area 240 is at least partially inclined downward, and the drainage outlet 220 is disposed close to the side of the bottom wall of the common drainage area 240 where the height is lower.

[0159] More specifically, the bottom wall of the common drainage area 240 extends along the arrangement direction of each water outlet chamber 210 and tilts downward. In the area near the end of the extension, the bottom wall of the common drainage area 240 is recessed to a certain depth to form a water collecting groove 241. The drainage outlet 220 is arranged on the side wall of the water collecting groove 241, and the lowest point of the drainage outlet 220 is basically flush with the bottom wall of the water collecting groove 241.

[0160] In the preferred structure, each water outlet chamber 210 is arranged along the second direction (ie Figure 6 The drainage outlet 220 is arranged in the second direction (from right to left in the figure). The drainage direction of the drainage outlet 220 is consistent with the second direction. Specifically, the bottom wall of the common drainage area 240 slopes downward from right to left, then recesses downward to form a water collection groove 241. The drainage outlet 220 is located at the lower end of the left side wall of the water collection groove 241.

[0161] With the above structure, the water outlet chamber 210 in the left area is located directly above the water collection groove 241. When the drainage water flows along the water outlet chamber 210 into the common drainage area 240, it can fall vertically into the water collection groove 241 and then be discharged from the left drainage outlet 220. The drainage water flowing from the water outlet chamber 210 in the right area into the common drainage area 240 can flow to the left along the inclined bottom wall of the common drainage area 240 and then enter the water collection groove 241. Without changing the flow direction, it can be discharged from the drainage outlet 220, making drainage smoother. The inclined bottom wall of the common drainage area 240 can provide support for the drainage water to flow to the drainage outlet 220, improving drainage efficiency.

[0162] The drainage assembly of this embodiment has the aforementioned structure, with the ventilation port 610 of the ventilation mechanism 600 disposed in the common drainage area 240. Because the individual water outlet chambers 210 are relatively isolated and connected only at their lower ends to the common drainage area 240, changes in air pressure within one water outlet chamber 210 are not directly reflected in other water outlet chambers 210. The common drainage area 240, in turn, is connected to each of the water outlet chambers 210, and connecting the common drainage area 240 to the outside world via the ventilation mechanism 600 effectively eliminates the negative pressure environment and prevents water from being drawn out of other washing units when one washing unit is draining.

[0163] In a further embodiment of the present invention, the ventilation port 610 is positioned near the connection point between the common drainage area 240 and the water outlet chamber 210. External air is drawn into the water outlet cavity 200 near the connection point between the common drainage area 240 and the water outlet chamber 210, allowing it to be more quickly replenished into each water outlet chamber 210. This allows the air pressure within each water outlet chamber 210 to quickly reach equilibrium with the external atmospheric pressure, thereby more reliably preventing the drawout of wash water from other washing units.

[0164] On the other hand, the connection position between the drainage common area 240 and the water outlet chamber 210 is also the highest position of the drainage common area 240. Setting the ventilation port 610 as high as possible in the drainage common area 240 can reduce the possibility of drainage water flowing through the ventilation port 610 into the ventilation channel 630 when water accumulates in the drainage common area 240.

[0165] Specifically, in this embodiment, a water outlet baffle extending downward from the top wall of the water outlet cavity 200 is provided. The water outlet baffle is arranged at a certain angle to the partition 410, thereby separating the water outlet cavity 200 into a plurality of water outlet chambers 210. In one specific structure, the water outlet baffle and the partition 410 are perpendicular to each other.

[0166] The lower end of the water outlet partition is spaced apart from the bottom wall of the water outlet cavity 200, so as to form a drainage common area 240 for collecting the drainage flow in the lower part of the water outlet cavity 200. The height of the lower end of the water outlet partition is substantially the same as the height of the connecting part 414 in the partition part 410, that is, the lower end of the water outlet partition is higher than the lower end of the water retaining part 4141. In this way, the air exchange opening 610 located on the lower side of the connecting part 414 is arranged at the communication position of the water outlet chamber 210 and the drainage common area 240.

[0167] In a preferred embodiment of the present embodiment, the volumes of the water outlet chambers 210 are not completely the same, and the volumes of the water inlet chambers 110 correspond one by one to the volumes of the water outlet chambers 210. That is, the water inlet chamber 110 connected to the water outlet chamber 210 with a larger volume also has a larger volume. Correspondingly, the water inlet chamber 110 connected to the water outlet chamber 210 with a smaller volume also has a smaller volume.

[0168] The air exchange opening 610 is arranged close to one of the water outlet chambers 210 with the largest volume. The water outlet chamber 210 with a larger volume usually corresponds to a washing unit with a larger drainage pressure, and the drainage flow passing through the water outlet chamber 210 is also larger, which is more likely to generate a larger negative pressure in the drainage common area 240 during drainage. The air exchange opening 610 close to one of the water outlet chambers 210 with the largest drainage flow can more quickly supplement external air to the drainage common area 240, thereby destroying the formation of negative pressure.

[0169] As a preferred embodiment, the water outlet chamber 210 with the largest volume is arranged above the water collecting groove 241, and the drainage flow in the water outlet chamber 210 directly enters the water collecting groove 241, which can be discharged as soon as possible to ensure smooth drainage. At the same time, it can also avoid the drainage flow impacting the bottom wall of the water outlet cavity 200 with a large impact force to cause the drainage to splash and increase the risk of drainage cross flow.

[0170] The water outlet chambers 210 with relatively small volumes correspond to the inclined bottom wall of the drainage common area 240, and the drainage flow from these water outlet chambers 210 flows along the inclined bottom wall of the drainage common area 240 into the water collecting groove 241 and is then discharged. Since the drainage flow and drainage pressure in these water outlet chambers 210 are relatively small, there is no obvious drainage splashing, and the drainage flow can also be more smoothly collected into the water collecting groove 241, without affecting the drainage efficiency.

[0171] In a specific structure, the leftmost water outlet chamber 210 has the largest cross-sectional area, thereby having the largest volume, and the volumes of the other water outlet chambers 210 are relatively small. The air exchange opening 610 is arranged below the leftmost water outlet chamber 210, and the width of the water collecting groove 241 is substantially the same as the width of the leftmost water outlet chamber 210, so that the leftmost water outlet chamber 210 directly faces the water collecting groove 241 for drainage.

[0172] In a preferred embodiment of this embodiment, the lower side of the first air passage 631 of the ventilation channel 630 is partially recessed to form a water collection groove 6311. Thus, even if a small amount of drainage enters the first air passage 631 through the ventilation port 610, it can be collected in the water collection groove 6311 and will not easily flow along the first air passage 631 to the second air passage 632.

[0173] More preferably, the lower side of the first air path 631 extends obliquely upward from the water collecting groove 6311 until it is connected to the second air path 632. In this way, water entering the first air path 631 is less likely to flow into the second air path 632.

[0174] As a preferred structure, the water collection trough 6311 is located directly below the ventilation port 610. Water entering the first air path 631 through the ventilation port 610 falls directly into the water collection trough 6311, greatly reducing the possibility of water flowing into the second air path 632. In addition, the drainage common area 240 of the water outlet cavity 200 is equipped with a water collection groove 241 corresponding to the largest water outlet chamber 210, and the ventilation port 610 is located at the lower end of this largest water outlet chamber 210, that is, above the water collection groove 241. In this way, the water collection trough 6311 is formed in front of the water collection groove 241, making the overall structure of the drainage assembly more regular.

[0175] In a further embodiment, the common drainage area 240 is further provided with an additional water inlet 230 that can be connected to other drainable components in the washing machine, thereby directing the drainage water from these other drainable components into the common drainage area 240. This further achieves an integrated drainage effect for the washing machine, allowing drainage from all parts of the washing machine to be discharged along the same main drainage pipe.

[0176] In the above solution, the additional water inlet 230 is positioned higher than the drain outlet 220, ensuring that the drainage water flowing in through the additional water inlet 230 can be discharged through the drain outlet 220. At the same time, the additional water inlet 230 is positioned lower than the ventilation port 610, so that the drainage water flowing in through the additional water inlet 230 does not pass near the ventilation port 610 and thus does not flow out through the ventilation port 610.

[0177] In one embodiment, the additional water inlet 230 is disposed on the sidewall of the water collection groove 241, preferably on the side opposite the drainage outlet 220, so that the drainage water entering through the additional water inlet 230 can be discharged more smoothly. More preferably, the additional water inlet 230 protrudes from the outer wall of the water collection groove 241 and extends upward at an angle, facilitating connection to a pipeline and allowing the drainage water to more easily flow into the water collection groove 241 under the action of gravity.

[0178] In a further solution of this embodiment, the anti-water-flow mechanism includes a check structure 700, which is arranged at the connection point between the anti-overflow channel 500 and the water outlet chamber 200, and is unidirectionally conducted from the anti-overflow channel 500 to the water outlet chamber 200.

[0179] Specifically, at least one outlet chamber 210 is provided with the aforementioned check structure 700, and the check structure 700 is disposed in the upper region of the outlet chamber 210. As a specific embodiment, the outlet chamber 210 extends downward from the overflow prevention channel 500, and the check structure 700 controls the unidirectional flow of the outlet chamber 210 from top to bottom.

[0180] By setting up the check structure 700, when the drainage pressure is too high or there is a problem with poor drainage, even if the liquid level in the water outlet cavity 200 rises, causing the drainage water to flow upward into the water outlet chamber 210, the water flow cannot flow upward over the check structure 700, thereby further preventing the problem of drainage cross-flow.

[0181] As a specific embodiment, the check structure 700 is provided in a one-to-one correspondence with the water outlet chamber 210, that is, the upper part of each water outlet chamber 210 is respectively provided with a check structure 700, which is more reliable in preventing the drainage from flowing in series.

[0182] As another specific implementation, the check structure may be provided only in part of the water outlet chambers, while the check structure may not be provided in part of the water outlet chambers.

[0183] In another solution of this embodiment, the check structure may not be provided, and the purpose of preventing drainage from flowing in series can be achieved to a certain extent by relying solely on the anti-overflow channel 500 .

[0184] In a specific solution of this embodiment, the check structure 700 includes a valve body 710 for achieving a one-way conduction effect. The valve body 710 has a structure similar to a duckbill valve.

[0185] Specifically, the valve body 710 includes a liquid inlet 711 and a liquid outlet 712. The liquid inlet 711 has a liquid flow channel on its inner side that narrows along the flow direction. The liquid outlet 712 is connected to the distal end of the liquid inlet 711, i.e., the narrowed end of the liquid inlet 711. The two sides of the liquid outlet 712 extend parallel to each other, and the distal end of the liquid outlet 712 has an openable and closable liquid outlet slit 713.

[0186] In the above solution, the liquid outlet portion 712 is a flat structure formed of a flexible material. In its initial state, that is, when no water flows through, the two sides of the liquid outlet portion 712 remain in contact with each other, leaving no gap. At this time, the liquid outlet gap 713 is in a closed state. When the drainage water flows along the liquid flow channel inside the liquid inlet portion 711 toward the liquid outlet portion 712, the two sides of the liquid outlet portion 712 deform under the impact of the water flow and move away from each other, allowing the water to continue flowing along the liquid outlet portion 712. At the same time, the deformation of the liquid outlet portion 712 can also open the liquid outlet gap 713, allowing the water to flow out of the liquid outlet gap 713. When the drainage water stops flowing through, the liquid outlet portion 712 returns to a state of contact between the two sides due to its own elastic force.

[0187] However, if the liquid level in the water outlet chamber 200 rises to contact the liquid outlet portion 712, the water pressure from the outside will press the two sides of the liquid outlet portion 712 together, making the two sides of the liquid outlet portion 712 tightly fit together. At this time, the liquid outlet gap 713 remains closed, and liquid cannot enter the liquid outlet portion 712 through the liquid outlet gap 713, thus achieving the purpose of one-way conduction.

[0188] In a preferred embodiment, a bending structure 7121 protruding toward one side is provided on the liquid outlet portion 712. Specifically, both sides of the liquid outlet portion 712 are bent toward the same direction at a certain position to form the bending structure 7121.

[0189] If the liquid outlet portion 712 were a straight, continuously extending structure, the elasticity of the liquid outlet portion 712 would cause deformation. This elasticity would decrease over time, potentially widening the gap between the two sides of the liquid outlet portion 712. Consequently, the liquid outlet gap 713 at the end would become incapable of closing, resulting in a loss of unidirectional flow. However, by providing the bent structure 7121, the two sides of the liquid outlet portion 712 can remain substantially in contact with each other for an extended period of time, at least at the bent structure 7121, thereby extending the service life of the valve body 710.

[0190] On the other hand, when the liquid level in the water outlet chamber 200 rises to a level that contacts the curved structure 7121, the degree of curvature of the curved structure 7121 can be further increased under the action of water pressure, making the two sides of the liquid outlet portion 712 fit more tightly. The greater the water pressure, the more effective the compression of the curved structure 7121 of the liquid outlet portion 712, thereby improving the sealing effect and effectively solving the problem of water leakage.

[0191] As a preferred structure, see Figure 17 The ends of both sides of the liquid outlet portion 712 extend relatively to each other, so that in the initial state, a certain gap can be left between the two sides of the liquid outlet portion 712, but the liquid outlet gap 713 can be completely closed.

[0192] Furthermore, in this embodiment, the valve body 710 has a mounting portion 714 connected to the liquid inlet portion 711. The valve body 710 is secured within the water outlet chamber 210 via the mounting portion 714. Specifically, the mounting portion 714 protrudes from the upper end of the liquid inlet portion 711 toward the outer periphery. The check structure 700 includes a pressing block 720 for securing the valve body 710. The inner wall of the water outlet chamber 210 has a boss 211. The pressing block 720 is mounted above the boss 211, clamping the mounting portion 714 between the pressing block 720 and the boss 211.

[0193] In a more specific structure, the left and right sides of the liquid inlet 711 first extend vertically downward for a distance, and then extend obliquely toward each other, thereby forming a gradually narrowing liquid flow channel. The mounting portion 714 is arranged around the outer periphery of the upper end of the liquid inlet 711, and is arranged in a circle along the circumferential direction.

[0194] In the above embodiment, the valve body 710 is a one-piece structure made of a flexible material, such as rubber or a similar elastically deformable material. The pressure block 720 is made of a hard material and is mounted on the upper side of the valve body 710. It cooperates with the boss 211 to squeeze the mounting portion 714. This not only secures the valve body 710, but also ensures a tight fit between the mounting portion 714 and the boss 211, preventing water in the water outlet cavity 200 from overflowing from between the valve body 710 and the inner wall of the water outlet chamber 210 onto the upper side of the check structure 700.

[0195] As a specific embodiment, the pressure block 720 includes an extrusion portion 721, which is a hollow cylindrical structure that matches the shape of the water outlet chamber 210. The extrusion portion 721 is mounted on the upper side of the boss 211, and the lower end surface is tightly fitted with the mounting portion 714 of the valve body 710, further preventing water from overflowing upward.

[0196] Preferably, the lower end surface of the extrusion portion 721 has a first rib 7211 extending circumferentially, which can further enhance the effect of preventing water from overflowing upward.

[0197] In a further embodiment, the pressure block 720 includes a skeletal support 722 disposed below the extrusion portion 721. The skeletal support 722 extends into the interior of the liquid inlet portion 711. Specifically, the upper end of the liquid inlet portion 711 is sleeved onto the exterior of the skeletal support 722. Because the pressure block 720 is a rigid structure, it can better stabilize the shape of the liquid inlet portion 711, preventing it from deforming significantly due to external water pressure, thereby enhancing the stability of the valve body 710.

[0198] As a specific embodiment, the upper area of ​​the liquid inlet portion 711 is vertically arranged, and the skeleton support 722 includes a plug portion 7221 connected to the lower end of the extrusion portion 721. The plug portion 7221 is a cylindrical structure, and the upper area of ​​the liquid inlet portion 711 is tightly fitted on the outside of the plug portion 7221.

[0199] Further, the skeleton support 722 further comprises a support sheet 7222 extending from the lower end of the insertion part 7221, the upper part of the support sheet 7222 being connected to the inner circumferential wall of the insertion part 7221, and the lower part extending into the gradually narrowed liquid flow channel inside the liquid inlet part 711.

[0200] Specifically, the two side edges of the lower region of the support sheet 7222 extend obliquely towards each other, so that the part of the support sheet 7222 extending from the lower end of the insertion part 7221 is triangular. The two sides of the support sheet 7222 are spaced apart from the inner wall of the liquid inlet part 711, leaving space for the liquid inlet part 711 to be deformed by water pressure. However, when the liquid inlet part 711 is deformed by pressure and comes into contact with the support sheet 7222, it cannot be further deformed by pressure, ensuring the stability of the structure.

[0201] Preferably, the edges of the support sheet 7222 are at an angle to the inner wall of the liquid inlet part 711, so that the spacing distance between them gradually increases from top to bottom, more in line with the deformation trend of the liquid inlet part 711 when it is deformed by pressure.

[0202] In a further structure, multiple support sheets 7222 are arranged in the front-rear direction, which can support the liquid inlet part 711 in a larger range. At the same time, the drainage flow can enter the inside of the liquid inlet part 711 through the space between the connected support sheets 7222, without substantially obstructing the flow path of the drainage flow.

[0203] In a further scheme of the embodiment, the shell 300 of the drainage assembly comprises a first shell 310, a second shell 320 and an upper cover 330. The upper cover 330, the first shell 310 and the second shell 320 are arranged in sequence from top to bottom, and are connected to each other to form a complete shell 300. The shell 300 is formed by splicing multiple parts, so that the one-way air permeable valve 640 and the check structure 700 can be installed inside before assembly.

[0204] As a specific structure, the upper cover 330 is an open structure at the lower side, the first shell 310 is a through structure from top to bottom, and the second shell 320 is an open structure at the upper side. The upper cover 330 is connected to the upper end of the first shell 310, and the second shell 320 is connected to the lower end of the first shell 310, thereby forming a complete shell 300.

[0205] In the above scheme, the water inlet cavity 100, the water outlet cavity 200, and the second air path 632 of the air exchange channel 630 are respectively penetrated by the upper cover 330 to the second shell 320. The first air path 631 of the air exchange channel 630 is formed by splicing the first shell 310 and the second shell 320.

[0206] The water inlet baffles used to separate the water inlet chamber 110 specifically include an upper water inlet baffle 421 disposed within the upper cover 330, a middle water inlet baffle 422 disposed within the first housing 310, and a lower water inlet baffle 423 disposed within the second housing 320. The water outlet baffles used to separate the water outlet chamber 210 specifically include an upper water outlet baffle 431 disposed within the upper cover 330 and a lower water outlet baffle 432 disposed within the first housing 310. The second housing 320 does not have a baffle structure on one side of the water outlet chamber 200, forming a common drainage area 240.

[0207] Furthermore, the air-water baffle used to separate the first cavity 301 and the second cavity 302 partially includes an upper air-water baffle 441 arranged in the upper cover 330, a middle air-water baffle 442 arranged inside the first shell 310, and a lower air-water baffle 443 arranged inside the second shell 320.

[0208] Combine Figure 12 As shown, the upper cover 330 includes an air circuit cover 331, which forms the top of the second cavity 302, and a water circuit cover 332, which forms the top of the first cavity 301. A limit post 660 is provided inside the air circuit cover 331 to limit the upward movement of the valve core 641. The upper water inlet baffle 421 and the upper water outlet baffle 431 are integrally connected within the water circuit cover 332. A downwardly protruding upper air-water baffle 441 is provided at the junction of the air circuit cover 331 and the water circuit cover 332.

[0209] Combine Figure 8 、 Figure 9 and Figure 13 、 Figure 14 As shown, the third partition plate 413, the connecting portion 414, and the water retaining portion 4141 of the partition 410 are disposed on the first shell 310, the middle water inlet partition plate 422 is disposed in front of the third partition plate 413, and the lower water outlet partition plate 432 is disposed behind the third partition plate 413. The first partition plate 411 and the second partition plate 412 of the partition 410 are disposed within the second shell 320, and the lower water inlet partition plate 423 is disposed in front of the second partition plate 412.

[0210] The connecting portion 414 is recessed upward relative to the lower end of the first housing 310, forming a long groove structure on the underside of the first housing 310 at the location of the connecting portion 414. The rear side of this groove structure forms a water retaining portion 4141. A second rib 4142 is provided on the underside of the connecting portion 414, extending along the direction of the first air path 631. The upper edge of the first partition 411 is partially recessed, forming a first notch 4111. The second rib 4142 has a disconnected area at the location corresponding to the first notch 4111, forming a second notch 4143.

[0211] When the first and second shells 310 and 320 are joined, the front side of the groove structure abuts the top of the second partition 412, while the second rib 4142 abuts the top of the first partition 411, sequentially separating the water inlet chamber 100, the first air passage 631, and the water outlet chamber 200. The first notch 4111 and the second notch 4143 are connected to form a ventilation port 610 that connects the first air passage 631 and the water outlet chamber 200.

[0212] In the above structure, the drainage outlet 220 , the additional water inlet 230 , and each water inlet 120 are respectively provided on the second shell 320 .

[0213] Further, combined with Figure 10 、 Figure 11 、 Figure 13 and Figure 14 As shown, the first housing 310 includes a central air-water baffle 442, which is arranged vertically along the front-to-back direction. The aforementioned third baffle 413, connecting portion 414, central water inlet baffle 422, and lower water outlet baffle 432 are all located in the space to the left of the central air-water baffle 442. To the right of the central air-water baffle 442 are located the horizontal portion 652 of the air path baffle 650, as well as the upper and middle regions of the vertical portion 651. An atmospheric connection port 620 is located on the right end surface of the first housing 310, protruding to the right.

[0214] The second shell 320 has a lower air-water baffle 443 vertically arranged along the front-to-back direction. The above-mentioned first baffle 411, second baffle 412 and lower water inlet baffle 423 are arranged in the space on the left side of the lower air-water baffle 443, and the lower area of ​​the vertical part 651 of the air path baffle 650 is provided in the space on the right side of the lower air-water baffle 443.

[0215] In this embodiment, the boss 211 is formed by a local protrusion of the inner wall of the first shell 310 corresponding to the water outlet chamber 210 , and the check structure 700 is installed inside the first shell 310 .

[0216] As a specific embodiment, after the check structure 700 is in place, the upper end of the pressure block 720 is flush with the upper end of the first shell 310. The thickness of the upper water outlet baffle 431 in the upper cover 330 is greater than the thickness of the lower water outlet baffle 432 in the first shell 310. When the upper cover 330 and the first shell 310 are joined, the lower end surface of the upper water outlet baffle 431 partially abuts against the upper end surface of the pressure block 720, limiting the pressure block 720.

[0217] In this way, the check structure 700 can be limited from moving upward by using the pressure block 720 and the upper water outlet baffle 431 to limit the position, and the check structure 700 can be limited from moving downward by using the boss 211 and the mounting portion 714 of the valve body 710 to limit the position. The check structure 700 can be stably installed in the water outlet chamber 210 without moving.

[0218] As a specific embodiment, the upper cover 330 and the partition structure therein are integrally formed, the first shell 310 and the partition structure therein are integrally formed, and the second shell 320 and the partition structure therein are integrally formed.

[0219] In a specific solution, the three parts of the drainage component from top to bottom can be bonded together by coating waterproof glue on the end faces, thereby preventing water or air leakage at the joints.

[0220] In another specific solution, the three parts of the drainage component from top to bottom can also be connected into one by using a cladding process. In this way, the materials at various joints are fused into one, which can also achieve the purpose of preventing water leakage and air leakage.

[0221] In one embodiment, the drain assembly includes three water inlet chambers 110 and three water outlet chambers 210. The leftmost water inlet chamber 110 and water outlet chamber 210 have the largest volumes, and the drain outlet 220 is located on the leftmost side of the drain assembly. From left to right, the water inlets 120 corresponding to the three water inlet chambers 110 are sequentially located on the left side wall, front side wall, and bottom wall of the drain assembly.

[0222] As a specific embodiment, the drainage assembly described above is applied to a multi-drum washing machine having three drum assemblies. The drainage outlet 220 is used to connect to the drainage main of the multi-drum washing machine. Based on the different capacities of the drum assemblies, the three drum assemblies are defined as a large drum, a first small drum, and a second small drum. The water inlet 120 of the leftmost water inlet chamber 110 serves as the drainage inlet for the large drum, while the other two water inlets 120 serve as the drainage inlets for the first and second small drums, respectively.

[0223] The large cylinder, the first small cylinder and the second small cylinder are connected to the corresponding water inlet 120 on the drainage assembly through drainage pipes respectively. Each drainage pipe is provided with a drainage pump for controlling the corresponding cylinder assembly to drain water.

[0224] Furthermore, the additional water inlet 230 of the drainage assembly is connected to other drainable components of the multi-drum washing machine. In a specific embodiment, the multi-drum washing machine has a drying function, and the drainable component can be a heat exchange component that can drain condensed water.

[0225] For example, if a heat pump device is used for drying, the drainable component can be the evaporator of the heat pump device, used to drain condensed water that condenses on the surface of the evaporator after the moist air flows through it. Alternatively, the drainable component can be a condensing device used to cool and condense the moist air flow, with condensed water deposited after the moist air flows through the condensing device and drained away through a pipeline.

[0226] In another embodiment, the drainable component is used to discharge a self-cleaning water flow, such as a cleaning water flow for cleaning a filter assembly in a washing device, or a cleaning water flow for cleaning an evaporator of a heat pump device.

[0227] When draining the aforementioned multi-drum washing machine, for example, when draining the main drum alone, the corresponding drain pump is activated, and drainage water flows along the main drum drain pipe into the water inlet chamber 110 on the far left side of the drain assembly. The liquid level in this water inlet chamber 110 gradually rises, reaching the top of the partition 410. The water then overflows from the water inlet chamber 110 and enters the water outlet chamber 210 on the other side. The drainage water then flows downward within the water outlet chamber 210, opening the liquid outlet slit 713 at the lower end of the valve body 710. The drainage water then flows from the water outlet chamber 210 into the common drainage area 240, ultimately flowing out of the drainage outlet 220 and out of the multi-drum washing machine along the main drainage pipe to which it is connected.

[0228] If the drainage water pressure is too high or drainage is not smooth, causing the liquid level on one side of the water outlet chamber 200 to rise, the water pressure will compress the valve body 710, preventing the liquid outlet slit 713 from opening. The drainage water will not flow back to the upper side of the check structure 700, and thus will not flow into other water inlet chambers 110 and then into the first or second small cylinders. Even if the check structure 700 fails, as long as the liquid level in the water outlet chamber 200 is lower than the top of the partition 410, it will not overflow into other water inlet chambers 110 and cause drainage cross-flow.

[0229] When the large cylinder produces a large flow of water, the air pressure in the common drainage area 240 drops. At this time, the ventilation channel 630 is connected to the common drainage area 240 through the ventilation port 610, and the internal air pressure also drops accordingly, creating an air pressure difference between the upper and lower sides of the one-way air valve 640. This air pressure difference pushes the valve core 641 of the one-way air valve 640 upward, causing the seal 642 to separate from the inner circumferential wall of the through hole 6523.

[0230] At this time, see Figure 4 、 Figure 7 、 Figure 10 and Figure 11 As shown by the arrow in , outside air enters the housing 300 from the atmospheric connection port 620, passes through the through hole 6523 from bottom to top and enters the second air path 632, flows downward along the second air path 632 and enters the first air path 631, continues to flow along the first air path 631, and finally enters the common drainage area 240 from the ventilation port 610 in the left end area of ​​the first air path 631, which can destroy the negative pressure environment in the common drainage area 240, prevent the negative pressure from being too large, and draw out and discharge the washing water normally used in the first small cylinder or the second small cylinder.

[0231] The drainage assembly provided by the embodiment can be applied to a washing device having at least two washing units, and drainage flows from different washing units enter the drainage assembly and are integratedly drained out of the drainage assembly, thereby simplifying the overall waterway structure. The water outlet cavity 200 of the drainage assembly is communicated with the outside through the air exchange mechanism 600, which can balance the air pressure in the water outlet cavity 200 in time, and prevent the formation of excessive negative pressure in the water outlet cavity 200 to suck out water used for normal washing from the washing unit that does not perform drainage. The one-way air valve 640 is arranged to ensure that the air exchange mechanism 600 is one-way communicated from the outside to the water outlet cavity 200, which can avoid the reverse flow of the drainage flow along the air exchange mechanism 600, and further avoid the water leakage problem.

[0232] Each water inlet chamber 110 in the drainage assembly is communicated to the water outlet cavity 200 through the inverted U-shaped anti-overflow channel 500, and the drainage flow can enter the water outlet cavity 200 from the water inlet chamber 110 through the anti-overflow channel 500 and then be drained out of the drainage outlet 220. The water in the water outlet cavity 200 cannot pass through the anti-overflow channel 500 in the reverse direction, so that the drainage flow cannot flow back into the water inlet chamber 110, thereby effectively preventing the problem of drainage cross-flow between multiple washing units.

[0233] The arrangement of the check structure 700 in cooperation with the anti-overflow channel 500 can more reliably prevent the drainage cross-flow. The valve body 710 of the check structure 700 has a structure similar to a duckbill valve, which prolongs the length of the liquid outlet portion 712 based on the existing duckbill valve structure, and further arranges a bending structure 7121 on the liquid outlet portion 712. On the one hand, it can avoid the gap of the liquid outlet portion 712 becoming larger after long-term use, and on the other hand, it can also help the liquid outlet portion 712 to further bend and deform when the water pressure extrudes the liquid outlet portion 712, so that the two sides are more tightly fitted to ensure the sealing effect.

[0234] With the above scheme, the check structure 700 can prevent the reverse flow of the water flow, and further directly prevent the drainage flow from flowing back from the water outlet cavity 200 to the water inlet chamber 110. Even if the check structure 700 fails, as long as the liquid level in the water outlet cavity 200 is kept at a height not exceeding the height of the bending position of the anti-overflow channel 500, the drainage flow will not overflow from the water outlet cavity 200 to the water inlet chamber 110, thereby more reliably achieving the purpose of preventing the drainage cross-flow.

[0235] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present invention can make slight changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A drainage assembly, characterized in that: include: A water inlet cavity (100) having at least two water inlet chambers (110) capable of independently inletting water; A water outlet cavity (200) is connected to each of the water inlet chambers (110), and the water outlet cavity (200) has a water outlet (220); An anti-water flow mechanism is provided at the connection point between each water inlet chamber (110) and the water outlet chamber (200), and is used to prevent water from flowing from the water outlet chamber (200) into the water inlet chamber (110); A ventilation mechanism (600) is used to connect the water outlet cavity (200) with the external space and balance the air pressure inside and outside the water outlet cavity (200); The anti-water-crossing mechanism comprises: an anti-overflow channel (500) for connecting the water outlet chamber (200) and the water inlet chamber (110), bending from one end of the water inlet chamber (110) toward the side where the water outlet chamber (200) is located, and communicating with the water outlet chamber (200); The check structure (700) is provided at the connection point between the anti-overflow channel (500) and the water outlet chamber (200), and is configured to conduct one-way communication from the anti-overflow channel (500) to the water outlet chamber (200).

2. The drainage assembly according to claim 1, characterized in that The ventilation mechanism (600) comprises a ventilation port (610) provided on the water outlet cavity (200), wherein the ventilation port (610) is higher than the drainage outlet (220).

3. The drainage assembly according to claim 2, characterized in that: The ventilation mechanism (600) has a ventilation channel (630) connected to the ventilation port (610), and an atmosphere connection port (620) connected to the ventilation channel (630); The ventilation port (610) is arranged inside the housing (300) of the drainage component, the ventilation channel (630) extends inside the housing (300), and the atmosphere connection port (620) is arranged on the housing (300).

4. The drainage assembly according to claim 3, characterized in that: The ventilation channel (630) has a first air path (631) extending along the cavity wall of the water outlet cavity (200), and the first air path (631) is connected to the ventilation port (610).

5. The drainage assembly according to claim 4, characterized in that: A first partition (411) is provided in the housing (300), the water outlet cavity (200) is located on one side of the first partition (411), and the first air path (631) is located on the other side of the first partition (411); the ventilation port (610) passes through both sides of the first partition (411).

6. The drainage assembly according to claim 5, characterized in that: The water outlet cavity (200) includes a water retaining portion (4141) spaced apart from the first partition (411), and a coverage area formed by the projection of the water retaining portion (4141) onto the first partition (411) at least partially overlaps with the ventilation port (610).

7. The drainage assembly according to claim 4, characterized in that: The water outlet chamber (200) is arranged on one side of the water inlet chamber (100); The first air path (631) extends between the water inlet cavity (100) and the water outlet cavity (200) along the cavity wall of the water outlet cavity (200).

8. The drainage assembly according to claim 7, characterized in that: One end of the first gas path (631) is connected to the ventilation port (610), and the other end is connected to the second gas path (632) of the ventilation channel (630); the second gas path (632) extends upward from the other end of the first gas path (631) and is connected to the atmosphere connection port (620).

9. The drainage assembly according to claim 8, characterized in that: A one-way air valve (640) is provided in the upper region of the second air path (632) for controlling the one-way conduction of the ventilation channel (630) from the atmosphere connection port (620) to the ventilation port (610).

10. The drainage assembly according to claim 2, characterized in that: The water outlet cavity (200) has: At least two water outlet chambers (210) are provided, and each of the water outlet chambers (210) is connected to at least one of the water inlet chambers (110) via the anti-water cross-contamination mechanism; A drainage common area (240) is connected to each of the water outlet chambers (210); The drainage outlet (220) and the ventilation port (610) are both provided in the drainage common area (240).

11. The drainage assembly according to claim 1, characterized in that The water outlet cavity (200) has at least two water outlet chambers (210), and at least one of the water outlet chambers (210) is provided with the check structure (700).

12. The drainage assembly according to any one of claims 1 to 10, characterized in that: The anti-overflow channel (500) extends upward from one end of the water inlet chamber (110), bends toward the side where the water outlet chamber (200) is located, and then extends downward to communicate with the water outlet chamber (200).

13. The drainage assembly according to any one of claims 1 to 10, characterized in that: A partition (410) extending upward from the bottom wall is provided inside the housing (300) of the drainage component, one side of the partition (410) forming the water inlet cavity (100) and the other side forming the water outlet cavity (200); The upper end of the partition (410) is spaced apart from the top wall of the housing (300) to form the anti-overflow channel (500).

14. The drainage assembly according to claim 13, characterized in that At least a portion of the partition portion (410) has a double-layer partition structure, and the ventilation port (610) of the ventilation mechanism (600) is provided on a side of the double-layer partition structure facing the water outlet cavity (200); The interior of the double-layer partition structure is hollow, forming a ventilation channel (630) that communicates with the water outlet cavity (200) through the ventilation port (610).

15. The drainage assembly according to any one of claims 1 to 10, characterized in that: The backstop structure (700) comprises: The liquid inlet portion (711) has a liquid flow channel therein that gradually narrows along the conduction direction; A liquid outlet portion (712) is connected to the end of the liquid inlet portion (711), with both sides extending parallel to each other, and a liquid outlet gap (713) that can be opened and closed is provided at the end of the liquid outlet portion; The liquid outlet portion (712) is provided with a bending structure (7121) protruding toward one side.

16. The drainage assembly according to claim 4, characterized in that The water outlet cavity (200) is arranged on one side of the water inlet cavity (100); and the first air path (631) extends along a cavity wall of the water outlet cavity (200) on a side away from the water inlet cavity (100).

17. A washing device, characterized in that: Comprising the drainage assembly according to any one of claims 1 to 16, at least two washing units of the washing device are in one-to-one communication with the respective water inlet chambers (110) of the drainage assembly.

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