A dishwasher

Abstract

The utility model discloses a kind of dishwashers, inner container forms washing space;Base is set below inner container, base includes base body and bottom cover, and installation opening is provided on base body, and water guide groove is provided at the edge of installation opening, bottom cover is set at installation opening, and gap is formed between the outer periphery of bottom cover and installation opening, and water guide groove is configured to guide water falling on base body to bottom cover;Overflow detection part is set on bottom cover, and is configured to detect water level in bottom cover.The base of the scheme is reliable to the confluence effect of overflow, and can send alarm in time when overflow occurs in whole machine, improve the use reliability of dishwasher.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a dishwasher. Background Technology

[0002] The dishwasher includes an inner tub and a base, with the base located below the inner tub. Piping, a water pump, and other components are installed in the space between the inner tub and the base. When water leaks from the piping or pump, or when the inner tub overflows, water flows into the base. Therefore, the base needs an overflow alarm device to promptly alert the system when the machine overflows. One existing base includes a base body and a bottom cover. The bottom cover is detachable and serves as a maintenance cover for easy machine repair. A gap exists between the base body and the bottom cover. Therefore, ensuring that overflow water flows smoothly into the bottom cover and triggers a timely alarm when the machine overflows is a technical problem that needs to be solved in this field.

[0003] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0004] In response to the problems mentioned in the background art, this utility model proposes a dishwasher with a base that reliably collects overflow water and can promptly issue an alarm when the whole machine overflows, thereby improving the reliability of the dishwasher.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution: In some embodiments of this application, a dishwasher is provided, wherein the inner tub forms a washing space; the base is disposed below the inner tub, and the base includes a base body and a bottom cover, the base body is provided with an installation opening, a water guide groove is provided at the edge of the installation opening, the bottom cover is disposed at the installation opening, a gap is formed between the outer periphery of the bottom cover and the installation opening, the water guide groove is configured to guide water dripping on the base body to the bottom cover; an overflow detection unit is disposed on the bottom cover and is configured to detect the water level in the bottom cover.

[0006] The above technical solution has the following advantages or beneficial effects: The dishwasher disclosed in this application can smoothly guide water dripping onto the base body to the bottom cover through the water guide channel, avoiding the situation where some overflow water cannot flow to the bottom cover due to the gap between the base body and the bottom cover, and ensuring that all overflow water can be concentrated in the bottom cover.

[0007] Because the water guide channel is located at the edge of the installation opening and is integrally molded with the base body, its structure is stable and can effectively catch water dripping onto the base body. Water flows downwards under its own weight, and the channel structure guides and constrains the water flow, causing it to flow along the channel's extension direction. Furthermore, because the water guide channel spans the gap between the base body and the bottom cover, the water can smoothly cross this gap and ultimately flow smoothly into the bottom cover.

[0008] Because the water guiding structure directs all the overflow water to the bottom cover, and the overflow detection unit is located on the bottom cover, when the water level in the bottom cover reaches the detection threshold of the overflow detection unit, the overflow detection unit can detect it in time and issue an alarm signal, avoiding alarm delays or missed alarms caused by some overflow water not entering the bottom cover, thus improving the reliability of the whole machine's overflow alarm.

[0009] In some embodiments of this application, the base body includes a plurality of water-receiving surfaces connected in sequence, the water-receiving surfaces are located below the inner liner, the plurality of water-receiving surfaces surround the installation opening, each of the water-receiving surfaces has a first water-guiding surface, and a water-guiding groove is provided at the lower position of each of the water-receiving surfaces.

[0010] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: When the dishwasher is running, if water droplets fall onto the water-receiving surface, the water will naturally converge towards the lower position along the first water-guiding surface due to gravity, preventing water from stagnating on the surface. The water guide groove located at the lower edge of the water-receiving surface, near the bottom cover, is designed to catch these converged water droplets and guide them smoothly into the bottom cover. In some embodiments of this application, the bottom cover has a second water guiding surface, a water collection trough is formed at the lower part of the bottom cover, and the overflow detection unit is disposed at the water collection trough.

[0011] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: The water flowing from the base body through the water guide channel to the bottom cover, as well as the water dripping directly onto the bottom cover, will flow along the second water guide surface to the lower center under the influence of gravity, preventing water from stagnating on the bottom cover. Ultimately, all the water will converge into the water collection tank located at the lower center, causing the water level in the collection tank to gradually rise.

[0012] In some embodiments of this application, the overflow detection unit includes a cover, which is connected to the bottom cover. A receiving space is formed between the cover and the bottom cover. A water-flow gap communicating with the receiving space is also formed between the cover and the bottom cover. A floating element is provided in the receiving space, and a micro switch is provided at the upper part of the receiving space. The floating element is configured to float under the buoyancy of water to trigger the micro switch.

[0013] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: The cover design provides a protective space for the floating components and microswitches, preventing detection failures caused by direct water impact or interference from debris. Simultaneously, the water flow gap controls the water flow rate into the containment space, preventing false triggering caused by sudden water surges and improving detection stability.

[0014] In some embodiments of this application, the dishwasher further includes: The inner liner is provided with an installation hole, the water distribution seat is located at the installation hole, and the water distribution seat is provided with a first overflow channel; The spray arm is supplied with water by the water distribution seat through a pipeline; The water distribution valve is connected to the water distribution base and is located below the water distribution base. The water distribution valve is provided with a second overflow channel. The first overflow channel is connected to the second overflow channel to guide the water in the inner tank to the bottom cover when the inner tank overflows.

[0015] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: The dishwasher of this application achieves the overflow function by setting a first overflow channel on the existing water distribution base, eliminating the need for additional complex independent overflow channels and dedicated overflow components. The water distribution base simultaneously performs the dual functions of water supply and overflow, integrating component functions, effectively simplifying the structural design of the inner tank, reducing the number of parts, and lowering assembly complexity. The water distribution base itself needs to supply water to the spray arms in different locations, and its installation position and piping layout are adapted to the inner tank structure. By integrating the overflow channel into the water distribution base, the spray system can be adapted to the setting requirements of different spray arms without making major adjustments, thus enhancing the versatility and adaptability of the solution.

[0016] In some embodiments of this application, the upper part of the water distribution seat is provided with a first extension, and a first sub-overflow channel is formed in the first extension. The lower part of the water distribution seat is provided with a second extension, and a second sub-overflow channel is formed in the second extension. The first sub-overflow channel and the second sub-overflow channel are connected to form the first overflow channel. The side of the water distribution valve is provided with a protruding cylindrical part, and a second overflow channel is formed inside the protruding cylindrical part. The second extension is inserted into the protruding cylindrical part so that the first overflow channel and the second overflow channel are connected.

[0017] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: A protruding cylindrical portion on the side of the water distribution valve forms a second overflow channel, and the first and second overflow channels are precisely aligned through a second extension that interlocks with the protruding cylindrical portion. This interlocking structure ensures the airtightness of the connection between the two channels, effectively preventing leakage at the joint and avoiding impact on other internal components of the dishwasher. Furthermore, the interlocking mechanism facilitates positioning and installation during assembly, improving production efficiency, and allows for easy disassembly and separation during later maintenance, reducing repair costs. Overflow water flows sequentially through the first sub-overflow channel, the second sub-overflow channel, and the third overflow channel, ultimately converging into the water collection tank on the bottom cover. The entire flow path is integrated into the existing structure of the water distribution seat and valve, requiring minimal additional space. This ensures both the continuity and efficiency of overflow flow while further enhancing the compactness of the structure and the integration of functions. As a result, the dishwasher achieves reliable overflow protection while maintaining a more streamlined overall structure and improved operational stability.

[0018] In some embodiments of this application, the water distribution seat is provided with a flange and a thread, the flange is located below the thread, the flange abuts against the bottom side of the inner liner, and the locking nut is connected to the thread, the nut is located above the inner liner and abuts against the inner liner.

[0019] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: The detachable connection structure of the threaded connection and locking nut allows for easy removal of the water distribution seat from the inner tank during future maintenance or replacement of related components. This eliminates the need to damage other structures, reducing maintenance difficulty and costs. Furthermore, this installation structure does not occupy excessive space within the inner tank and does not interfere with the arrangement of the spray arms or the flow path of the overflow channel.

[0020] In some embodiments of this application, an overflow cover is provided at the top of the first overflow channel.

[0021] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: During the washing process, the spray arms rotate at high speed and spray high-pressure water onto the dishes and space inside the drum. Some of this water may splash or form a mist. If the top of the first overflow channel is not blocked, this non-overflowing water can easily fall directly into the channel and be guided through the first and second overflow channels to the bottom cover, triggering a false alarm from the overflow detection device on the bottom cover. This can cause the dishwasher to stop abnormally or alarm, affecting the user experience. The overflow cover, however, covers the top of the first overflow channel, forming a physical barrier. Its position and size are precisely designed to correspond to the channel entrance, preventing the sprayed water from entering the overflow path due to inertia or gravity, thus eliminating the risk of false triggering at the source. In some embodiments of this application, a dishwasher is provided, wherein an inner tub forms a washing space; a base is disposed below the inner tub, the base including a base body and a bottom cover, the base body having an installation opening; the bottom cover being disposed at the installation opening, a gap being formed between the outer periphery of the bottom cover and the installation opening; a water guiding structure spanning the gap to guide water dripping onto the base body to the bottom cover; and an overflow detection unit disposed on the bottom cover, the overflow detection unit being configured to detect the water level in the bottom cover.

[0022] The above technical solution has the following advantages or beneficial effects: The dishwasher disclosed in this application, by setting a water guiding structure across the gap, can smoothly guide water dripping on the base body to the bottom cover, avoiding the situation where some overflow water cannot flow to the bottom cover due to the gap between the base body and the bottom cover, and ensuring that all overflow water can be concentrated in the bottom cover.

[0023] Because the water guiding structure directs all the overflow water to the bottom cover, and the overflow detection unit is located on the bottom cover, when the water level in the bottom cover reaches the detection threshold of the overflow detection unit, the overflow detection unit can detect it in time and issue an alarm signal, avoiding alarm delays or missed alarms caused by some overflow water not entering the bottom cover, thus improving the reliability of the whole machine's overflow alarm.

[0024] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1This is a structural diagram of an inner liner and a base according to some embodiments; Figure 2 This is a structural diagram of a base according to some embodiments; Figure 3 for Figure 2 Enlarged view of section A in the middle; Figure 4 This is a cross-sectional view of an overflow detection unit according to some embodiments; Figure 5 This is a structural diagram of an inner liner according to some embodiments; Figure 6 This is yet another structural diagram of the inner liner according to some embodiments; Figure 7 This is an assembly cross-sectional view of the inner tank, water distribution seat, and water distribution valve according to some embodiments; Figure 8 for Figure 7 Enlarged view of section B; Figure 9 This is a structural diagram of a water distribution seat according to some embodiments; Figure 10 This is another structural diagram of the water distribution seat according to some embodiments; Figure 11 This is a structural diagram of a water distribution valve according to some embodiments.

[0027] Figure label: 100. Inner liner; 200. Base; 210. Base body; 211. Water receiving surface; 220. Bottom cover; 221. Water collection tank; 230. Water guide channel; 240. Rib; 250. Gap; 300. Overflow detection unit; 310. Cover; 320. Floating component; 330. Microswitch; 340. Water flow gap; 350. Accommodation space; 400, water distribution seat; 410, first overflow channel; 420, first extension; 421, first sub-overflow channel; 430, second extension; 431, second sub-overflow channel; 440, flange; 450, thread; 500. Divider valve; 510. Second overflow channel; 520. Protruding cylinder section; 600. Lock nut; 700. First spray arm; 800, Overflow Cover. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0034] In some embodiments of this application, reference is made to Figures 1 to 3 A dishwasher is provided, including an inner tub 100, the inner tub 100 forming a washing space.

[0035] The dishwasher also includes a base 200, which is located below the inner tub 100. The space between the base 200 and the inner tub 100 is used to install components such as pipes and water pumps.

[0036] The base 200 includes a base body 210, on which an installation opening (not shown) is provided, which is located below the inner liner 100.

[0037] The base 200 also includes a bottom cover 220, which is disposed at the mounting opening, and a gap 250 is formed between the outer periphery of the bottom cover 220 and the mounting opening.

[0038] In this embodiment, the bottom cover 220 is detachably installed at the installation opening. The bottom cover 220 serves as a maintenance cover, allowing for easy repair or replacement of internal pipes, water pumps, and other components through the installation opening.

[0039] In this embodiment, the base body 210 and the bottom cover 220 are integrally injection molded, and the bottom cover 220 and the base body 210 are connected by multiple spaced ribs 240. When it is necessary to disassemble the bottom cover 220, the ribs 240 are disconnected to remove the bottom cover 220. At the same time, a snap-fit ​​connection structure is provided between the bottom cover 220 and the base body 210. When it is necessary to reinstall the bottom cover 220, the bottom cover 220 is reinstalled onto the base body 210 through the snap-fit ​​structure.

[0040] The base 200 also includes a water guiding structure that spans the gap 250 to guide water dripping onto the base body 210 to the bottom cover 220. In other words, water dripping onto the base body 210 flows into the bottom cover 220 through the water guiding structure, at which point the bottom cover 220 also functions as a water receiving tray.

[0041] The dishwasher also includes an overflow detection unit 300, which is disposed on the bottom cover 220 and is configured to detect the water level in the bottom cover 220.

[0042] The dishwasher disclosed in this application, by setting a water guiding structure across the gap 250, can smoothly guide water dripping on the base body 210 to the bottom cover 220, avoiding the situation where some overflow water cannot flow to the bottom cover 220 due to the gap 250 between the base body 210 and the bottom cover 220, and ensuring that all overflow water can be concentrated in the bottom cover 220.

[0043] Since the water guiding structure directs all the overflow water to the bottom cover 220, and the overflow detection unit 300 is installed on the bottom cover 220, when the water level in the bottom cover 220 reaches the detection threshold of the overflow detection unit 300, the overflow detection unit 300 can detect it in time and issue an alarm signal, avoiding alarm delays or missed alarms caused by some overflow water not entering the bottom cover 220, and improving the reliability of the whole machine's overflow alarm.

[0044] The bottom cover 220 is integrally injection molded to the base body 210 via ribs 240, ensuring a stable initial connection. For maintenance, the bottom cover 220 can be removed by disconnecting the ribs 240. After maintenance, it can be reinstalled using clips or other connecting structures, thus enabling the bottom cover 220 to be detachable. This facilitates the maintenance or replacement of internal pipes, water pumps, and other components. Furthermore, this detachable design and water guiding structure ensure ease of maintenance without compromising overflow collection and detection / alarm functions.

[0045] In some embodiments of this application, reference is made to Figure 3 The water guiding structure is a water guiding channel 230. Specifically, a water guiding channel 230 is provided at the edge of the installation opening, and the water guiding channel 230 is integrally formed with the base body 210. The water guiding channel 230 spans the gap 250. The water guiding channel 230 is configured to guide water dripping onto the base body 210 to the bottom cover 220.

[0046] Because the water guide channel 230 is located at the edge of the installation opening and is integrally formed with the base body 210, its structure is stable and can effectively receive water dripping onto the base body 210. Water flows downwards under its own weight, and the channel structure of the water guide channel 230 guides and constrains the water flow, causing it to flow along the extension direction of the channel. Furthermore, because the water guide channel 230 spans the gap 250 between the base body 210 and the bottom cover 220, the water flow can smoothly cross this gap 250 along the channel and finally flow smoothly into the bottom cover 220.

[0047] The water guide channel 230 serves two purposes. First, its one-piece design reduces additional assembly steps and manufacturing complexity, while also preventing water leakage due to improper assembly, ensuring the reliability of the water guiding process. Second, the water guide channel 230 can directionally guide the water flow. Compared to other water guiding structures, it can more efficiently collect and guide the water on the base body 210 to the bottom cover 220, further ensuring that all overflow water is concentrated in the bottom cover 220. This provides a reliable water flow basis for the overflow detection unit 300 to accurately and timely detect the water level, thereby further improving the safety and stability of the entire machine in dealing with overflow situations.

[0048] In some embodiments of this application, referring to body 2, the base body 210 includes a plurality of sequentially connected water-receiving surfaces 211, which are located below the inner liner 100, and the plurality of water-receiving surfaces 211 form an installation opening. Each water-receiving surface 211 has a first water-guiding surface, and a water-guiding groove 230 is provided at the lower position of each water-receiving surface 211. The water-guiding groove 230 is located at the lower position of the first water-guiding surface.

[0049] For example, the base body 210 includes four water-receiving surfaces 211 connected in sequence. The water-receiving surfaces 211 are located below the inner liner 100, and the four water-receiving surfaces 211 form an installation opening. The two ends of any water-receiving surface 211 are higher than the middle position, and the portion from the end position to the middle position of the water-receiving surface 211 is the first water guide surface.

[0050] In other words, the installation opening is a rectangular structure, with four water-receiving surfaces 211 surrounding it. Each water-receiving surface 211 is an arc-shaped structure with higher ends and a lower middle, and the middle area of ​​the water-receiving surface 211 is inclined towards the side of the bottom cover 220. The water guide groove 230 is located in the middle position of the water-receiving surface 211 near the edge of the bottom cover 220.

[0051] When the dishwasher is running, if water droplets fall onto the water receiving surface 211, because the water receiving surface 211 is arc-shaped with higher ends and a lower middle, under the action of gravity, the water droplets falling at any point on the water receiving surface 211 will naturally converge along the arc-shaped surface towards the lower middle position, preventing water from stagnating at the ends of the water receiving surface 211. At the same time, the middle area of ​​the water receiving surface 211 is tilted towards the bottom cover 220, and this tilt angle further guides the converged water flow towards the bottom cover 220. The water guide groove 230, located at the edge of the middle position of the water receiving surface 211 near the bottom cover 220, is able to receive these converged water flows and smoothly guide them into the bottom cover 220.

[0052] In some embodiments of this application, the bottom cover 220 has a second water guiding surface, a water collection trough 221 is formed at the lower part of the bottom cover 220, and an overflow detection unit 300 is disposed at the water collection trough 221.

[0053] For example, the perimeter of the bottom cover 220 is higher than the center, and the portion from the perimeter to the center of the bottom cover 220 constitutes the second water guiding surface. In other words, the bottom cover 220 is a spherical structure with a higher perimeter and a lower center, and the water collection tank 221 is located at the center of the bottom cover 220. Water flowing from the base body 210 to the bottom cover 220 via the water guiding channel 230, as well as water dripping onto the bottom cover 220, collects in the lower water collection tank 221 to facilitate the overflow detection unit 300's detection of the water level.

[0054] Water flowing from the base body 210 through the water guide channel 230 to the bottom cover 220, as well as water dripping directly onto the bottom cover 220, will flow towards the lower center under the influence of gravity along the inclined surface of the spherical structure. Because the bottom cover 220 has a spherical structure, water flows from all directions can naturally converge along the curvature of the sphere, preventing water from stagnating at the edges or in localized areas of the bottom cover 220. Ultimately, all water flows will converge into the water collection tank 221 located at the lower center, causing the water level in the water collection tank 221 to gradually rise.

[0055] The water collection tank 221 concentrates the dispersed water flow, enabling the overflow detection unit 300 to directly monitor the water level in the water collection tank 221. This avoids the problem of slow water level rise or inaccurate detection caused by dispersed water flow, and improves the sensitivity and timeliness of overflow detection.

[0056] In some embodiments of this application, reference is made to Figure 4 The overflow detection unit 300 includes a cover 310 connected to a bottom cover 220, forming a receiving space 350 between the cover 310 and the bottom cover 220, and a water-flow gap 340 communicating with the receiving space 350. For example, the cover 310 is positioned above the water collection tank 221, and water collected in the water collection tank 221 enters the receiving space 350 through the water-flow gap 340.

[0057] A floating element 320, such as a foam chamber, is provided within the receiving space 350. A micro switch 330 is provided at the upper part of the receiving space 350. The micro switch 330 is fixedly disposed inside the cover 310, and is located above the floating element 320. The floating element 320 is configured to float under the buoyancy of water to trigger the micro switch 330.

[0058] As the water level in the collection tank 221 gradually rises due to overflow, water flows slowly into the receiving space 350 through the water flow gap 340. As the water volume in the receiving space 350 increases, the water level rises, and the floating component 320 gradually floats upwards under the buoyancy of the water. When the water level reaches the set value, the floating component 320 floats up to contact the micro switch 330 and triggers the switch. The micro switch 330 then sends a signal back to the main control board. Upon receiving the signal, the main control board immediately controls the dishwasher to stop water intake and operation, and displays an overflow alarm on the display screen to remind the user to handle the situation promptly.

[0059] The cover 310 provides a protective space for the floating component 320 and the micro switch 330, preventing detection failure caused by direct water impact or interference from debris. At the same time, the water flow gap 340 can control the water flow rate entering the receiving space 350, preventing false triggering caused by sudden water surge and improving the stability of detection.

[0060] The use of lightweight floating components such as foam 320 can generate sufficient buoyancy to float at low water levels, ensuring a sensitive response to changes in water level. Combined with a precisely positioned micro switch 330, it can accurately capture the set water level and ensure the sensitivity of the detection.

[0061] In existing dishwashers, if the water inlet valve malfunctions and continues to fill, a large amount of water will continuously flow into the inner tank 100, causing the water level in the inner tank 100 to rise continuously and eventually overflow. Therefore, an overflow structure needs to be installed in the inner tank 100 to guide the water out when the water level in the inner tank 100 rises to a certain height. Existing dishwashers have complex overflow channels and overflow components in the inner tank 100, resulting in a complex structure, increased parts, and increased costs.

[0062] To address the aforementioned technical problems, some embodiments of this application refer to... Figures 5 to 7 The dishwasher also includes a 400-inch water distribution base. Figure 9 This is a structural diagram of the water distribution seat 400 as viewed from the top side. Figure 10 This is a structural diagram of the water distribution seat 400 viewed from the bottom. The inner liner 100 is provided with mounting holes, and the water distribution seat 400 is fixedly installed at the mounting holes. The water distribution seat 400 is provided with a first overflow channel 410.

[0063] The dishwasher also includes spray arms, to which water is supplied via piping from the water distribution base 400. The spray arms are positioned at different locations within the inner tub 100 to spray water onto different areas of the washing space. For example, a first spray arm 700 is provided on the water distribution base 400, see reference. Figure 5 .

[0064] The dishwasher also includes a water distribution valve 500, which is fixedly connected to the water distribution base 400. The water distribution valve 500 is located below the water distribution base 400 and below the inner tank 100. The water distribution valve 500 is located in the space between the inner tank 100 and the base 200. Figure 11 This is a structural diagram of a water distribution valve 500, which has a second overflow channel 510.

[0065] The first overflow channel 410 is connected to the second overflow channel 510 to guide the water in the inner tank 100 to the bottom cover 220 when the inner tank 100 overflows. Specifically, the bottom end of the second overflow channel 510 is close to or directly above the water collection tank 221.

[0066] The dishwasher of this application achieves the overflow function by setting a first overflow channel 410 on the existing water distribution base 400, without the need for additional complex independent overflow channels and dedicated overflow components. The water distribution base 400 simultaneously undertakes the dual functions of water supply and overflow, integrating component functions, effectively simplifying the structural design of the inner tank 100, reducing the number of parts, and lowering assembly complexity.

[0067] The first overflow channel 410 is directly connected to the second overflow channel 510, and the bottom of the second overflow channel 510 is close to or directly opposite the top of the water collection tank 221, forming a short path for water flow from the inner tank 100 to the water collection tank 221. When the water level in the inner tank 100 rises to a set height, water can quickly enter the second overflow channel 510 through the first overflow channel 410 and flow directly to the water collection tank 221, avoiding the water flow resistance caused by complex channels and improving the timeliness and efficiency of overflow diversion.

[0068] Overflow water diverted to the water collection tank 221 can be detected in time by the existing overflow detection unit 300, triggering subsequent shutdown and alarm processes. This forms a complete closed loop between the overflow protection of the inner tank 100 and the overflow detection of the base 200, which not only solves the problem of draining overflow water from the inner tank 100, but also ensures that overflow water is dealt with in a timely manner through a mature detection mechanism, further improving the safety and reliability of the whole machine in the face of water ingress failures.

[0069] The water distribution base 400 itself needs to supply water to the spray arms in different positions, and its installation position and pipeline layout are adapted to the structure of the inner tank 100. By integrating the overflow channel into the water distribution base 400, the spray system can be adapted to the setting requirements of different spray arms without making major adjustments, thus enhancing the versatility and adaptability of the solution.

[0070] In some embodiments of this application, reference is made to Figure 9 and Figure 10The upper part of the water distribution base 400 is provided with a first extension 420, and a first sub-overflow channel 421 is formed within the first extension 420. The lower part of the water distribution base 400 is provided with a second extension 430, and a second sub-overflow channel 431 is formed within the second extension 430. The first sub-overflow channel 421 and the second sub-overflow channel 431 are connected to form a first overflow channel 410.

[0071] Reference Figure 11 The side of the water distribution valve 500 is provided with a protruding cylindrical portion 520, and a second overflow channel 510 is formed within the protruding cylindrical portion 520. (Refer to...) Figure 7 The second extension 430 is inserted into the protruding cylindrical portion 520 to connect the first overflow channel 410 and the second overflow channel 510. For example, the second extension 430 is inserted into the second overflow channel 510.

[0072] When the water level in the inner tank 100 rises to the overflow threshold due to reasons such as inlet valve malfunction, the water first enters the first extension 420 on the upper part of the water distribution seat 400. The first sub-overflow channel 421 in the first extension 420 serves as the initial path for overflow diversion. Its structural design can quickly receive and guide the water flow downward, preventing water from accumulating on the upper part of the water distribution seat 400 and ensuring that the overflow water enters the subsequent diversion stage in a timely manner.

[0073] A protruding cylindrical portion 520 on the side of the water distribution valve 500 forms a second overflow channel 510, and the first overflow channel 410 and the second overflow channel 510 are precisely connected through the insertion and engagement of the second extension portion 430 with the protruding cylindrical portion 520. This insertion structure ensures the sealing of the connection between the two channels, effectively preventing water leakage at the connection point and avoiding impact on other internal components of the dishwasher. On the other hand, the insertion and engagement method facilitates positioning and installation during assembly, improving production assembly efficiency, and also facilitates disassembly and separation during later maintenance, reducing maintenance costs.

[0074] Overflow water flows sequentially through the first sub-overflow channel 421, the second sub-overflow channel 431, and the second overflow channel 510, finally flowing into the water collection tank 221 of the bottom cover 220. The entire flow path is integrated into the existing structure of the water distribution seat 400 and the water distribution valve 500, without requiring excessive additional space. This ensures both the continuity and efficiency of overflow flow, while further enhancing the compactness of the structure and the integration of functions. As a result, the dishwasher achieves reliable overflow protection while having a more streamlined overall structure and improved operational stability.

[0075] In some embodiments of this application, reference is made to Figure 7 and Figure 9The water distribution seat 400 is provided with a flange 440 and a thread 450. The flange 440 is located below the thread 450 and abuts against the bottom side of the inner liner 100. The locking nut 600 is connected to the thread 450 and is located above the inner liner 100 and abuts against the inner liner 100.

[0076] During installation, install the water distribution seat 400 from bottom to top from the bottom side of the inner tank 100 until the flange 440 abuts against the bottom side of the inner tank 100. At this time, the thread 450 is located above the inner tank 100. Then, connect and lock the locking nut 600 to the thread 450. After the locking nut 600 is locked, it abuts against the inner tank 100.

[0077] The water distribution seat 400 adopts a bottom-up installation method and is designed with the flange 440 for positioning. During installation, the water distribution seat 400 is inserted into the mounting hole from the bottom side of the inner tank 100 until the flange 440 abuts against the bottom side of the inner tank 100. At this time, the flange 440 can quickly achieve axial pre-positioning of the water distribution seat 400, avoiding the water distribution seat 400 from shifting or shaking during installation, and ensuring that the thread 450 extends accurately above the inner tank 100, providing a stable foundation for the subsequent connection of the locking nut 600.

[0078] The detachable connection structure between the thread 450 and the locking nut 600 allows for easy removal of the water distribution seat 400 from the inner tank 100 during future maintenance or replacement of the water distribution seat 400 or related components. This eliminates the need to damage other structures, reducing maintenance difficulty and costs. Furthermore, this installation structure does not occupy excessive internal space within the inner tank 100 and does not interfere with the arrangement of the spray arms or the flow path of the overflow channel.

[0079] In some embodiments of this application, reference is made to Figure 5 and Figure 7 An overflow cover 800 is provided at the top of the first overflow channel 410. If the overflow cover 800 is not provided, water sprayed from the spray arm during the washing process may enter the first overflow channel 410 and then flow into the bottom cover 220, falsely triggering the overflow alarm.

[0080] The overflow cover 800 effectively prevents water sprayed from the spray arm from entering the first overflow channel 410. During the washing process, the spray arm rotates at high speed and sprays high-pressure water into the dishes and space inside the inner drum 100. Some of the water may splash or form a mist. If the top of the first overflow channel 410 is not blocked, this non-overflowing water can easily fall directly into the channel and be guided through the first overflow channel 410 and the second overflow channel 510 to the bottom cover 220, triggering the overflow detection device at the bottom cover 220 to issue a false alarm, causing the dishwasher to stop abnormally or alarm, affecting the user experience. The overflow cover 800 covers the top of the first overflow channel 410, forming a barrier through physical blocking. Its position and size design can accurately correspond to the channel entrance, so that the spray water is blocked outside the channel under the action of inertia or gravity, avoiding accidental entry into the overflow path and eliminating the risk of false triggering from the source.

[0081] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0082] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A dishwasher, characterized in that, Including: The inner liner forms a washing space; A base, disposed below the inner liner, the base comprising: The base body has an installation opening and a water guide groove at the edge of the installation opening; A bottom cover is disposed at the mounting opening, and a gap is formed between the outer periphery of the bottom cover and the mounting opening. The water guide groove is configured to guide water dripping onto the base body to the bottom cover. An overflow detection unit is disposed on the bottom cover and is configured to detect the water level in the bottom cover.

2. The dishwasher according to claim 1, characterized in that, The base body includes multiple water-receiving surfaces connected in sequence. The water-receiving surfaces are located below the inner liner. The multiple water-receiving surfaces form the installation opening. Each water-receiving surface has a first water-guiding surface, and a water-guiding groove is provided at the lower position of each water-receiving surface.

3. The dishwasher according to claim 1, characterized in that, The bottom cover has a second water guiding surface, and a water collection trough is formed at the lower part of the bottom cover. The overflow detection unit is located at the water collection trough.

4. The dishwasher according to claim 1, characterized in that, The overflow detection unit includes a cover body connected to the bottom cover, and a receiving space is formed between the cover body and the bottom cover. A water flow gap communicating with the receiving space is also formed between the cover body and the bottom cover. A floating component is provided in the receiving space, and a micro switch is provided at the upper part of the receiving space. The floating component is configured to float under the buoyancy of water to trigger the micro switch.

5. The dishwasher according to any one of claims 1 to 4, characterized in that, It also includes: The inner liner is provided with an installation hole, the water distribution seat is located at the installation hole, and the water distribution seat is provided with a first overflow channel; The spray arm is supplied with water by the water distribution seat through a pipeline; The water distribution valve is connected to the water distribution base and is located below the water distribution base. The water distribution valve is provided with a second overflow channel. The first overflow channel is connected to the second overflow channel to guide the water in the inner tank to the bottom cover when the inner tank overflows.

6. The dishwasher according to claim 5, characterized in that, The upper part of the water distribution seat is provided with a first extension, and a first sub-overflow channel is formed in the first extension. The lower part of the water distribution seat is provided with a second extension, and a second sub-overflow channel is formed in the second extension. The first sub-overflow channel and the second sub-overflow channel are connected to form the first overflow channel. The side of the water distribution valve is provided with a protruding cylindrical part, and a second overflow channel is formed inside the protruding cylindrical part. The second extension is inserted into the protruding cylindrical part so that the first overflow channel and the second overflow channel are connected.

7. The dishwasher according to claim 5, characterized in that, The water distribution seat is provided with a flange and a thread. The flange is located below the thread and abuts against the bottom side of the inner liner. The locking nut is connected to the thread and is located above the inner liner and abuts against the inner liner.

8. The dishwasher according to claim 5, characterized in that, An overflow cover is provided at the top of the first overflow channel.

9. The dishwasher according to claim 5, characterized in that, The water distribution seat is equipped with a first spray arm.

10. A dishwasher, characterized in that, Including: The inner liner forms a washing space; A base, disposed below the inner liner, the base comprising: A base body, wherein an installation opening is provided on the base body; A bottom cover is disposed at the mounting opening, and a gap is formed between the outer periphery of the bottom cover and the mounting opening; A water-guiding structure that spans the gap to guide water dripping onto the base body to the bottom cover; An overflow detection unit is disposed on the bottom cover and is configured to detect the water level in the bottom cover.

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