Drum outer tub assembly and washing machine
By designing a guide plate and drainage channel structure in the outer drum assembly of the drum washing machine, the problem of water flow being difficult to drain quickly is solved, achieving efficient drainage, reducing noise and energy consumption, and improving the overall performance and user experience of the washing machine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TCL HOME APPLIANCES (HEFEI) CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-06-16
AI Technical Summary
In existing drum washing machines, water flow is difficult to effectively collect and quickly drain during the drainage process, resulting in water accumulation between the inner and outer drums, which increases noise, inner drum rotation resistance and energy consumption, and prolongs washing time.
Design a drum outer cylinder assembly, including an outer cylinder body and a guide plate. The outer cylinder body has a receiving space and a drainage groove. The guide plate is set at the drain outlet, and the guide plate and the edge of the drain outlet form a guiding channel to guide the water flow to quickly converge and be discharged.
It improves drainage efficiency, reduces noise levels, decreases inner drum rotation resistance and energy consumption, and enhances the overall performance and user experience of the washing machine.
Smart Images
Figure CN224363070U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of washing structure technology, and in particular to a drum outer tub assembly and a washing machine. Background Technology
[0002] The drainage process of a front-loading washing machine plays a crucial role in its normal operation and performance. Currently, during the drainage process of front-loading washing machines, the inner drum typically rotates counter-clockwise. However, this conventional operation has led to a series of technical problems affecting the washing machine's performance and user experience.
[0003] The root cause is that water flow is difficult to effectively collect and quickly drain from the bottom of the outer drum, while clothes inside the inner drum continuously drain water, leading to a continuous accumulation of water between the inner and outer drums. This turbulent water flow collides with the moving inner drum, generating significant noise and disrupting the user's environment. Furthermore, it increases the rotational resistance of the inner drum, resulting in increased overall power consumption and energy usage.
[0004] A common approach to addressing these issues is to extend the drainage time. While this method can alleviate some problems to a certain extent, it sacrifices washing efficiency and prolongs the overall washing time. These practices fail to fundamentally solve the technical challenges of drainage in front-loading washing machines, severely hindering the improvement of overall washing machine performance and the optimization of user experience. Utility Model Content
[0005] This application provides a drum outer tub assembly and a washing machine, the drum outer tub assembly being able to improve drainage efficiency.
[0006] This application provides a drum outer cylinder assembly, including:
[0007] The outer cylinder body has a receiving space. The outer cylinder body includes an annular sidewall, a first cylinder wall, and a second cylinder wall. The first cylinder wall and the second cylinder wall are arranged opposite to each other. The annular sidewall is connected to the first cylinder wall and the second cylinder wall respectively. The annular sidewall, the first cylinder wall, and the second cylinder wall are connected to enclose and form the receiving space. A drainage groove is formed by a recess at the bottom of the annular sidewall. The drainage groove is connected to the receiving space. A drainage outlet is provided on the bottom wall of the drainage groove.
[0008] A flow guide plate is disposed at the drain outlet and extends toward the receiving space. The flow guide plate and the edge of the drain outlet form a flow channel, which is used to guide water flow through the surface of the flow guide plate and then discharge through the drain outlet.
[0009] In some embodiments, the angle between the guide plate and the plane containing the bottom wall of the trough is 15° to 90°.
[0010] In some embodiments, the guide plate is a curved structure, with the concave surface of the curved structure facing the direction of water flow impact.
[0011] In some embodiments, the flow channel includes a first sub-channel and a second sub-channel; the flow guide plate has a first surface and a second surface along its thickness direction, the first surface and a portion of the edge of the drain outlet forming the first sub-channel, and the second surface and a portion of the edge of the drain outlet forming the second sub-channel.
[0012] In some embodiments, the drainage trough has a first trough wall and a second trough wall disposed opposite to each other, the first trough wall and the second trough wall extending obliquely from both sides of the bottom wall of the trough toward the receiving space, and the first trough wall and the second trough wall being connected to the annular sidewall respectively.
[0013] In some embodiments, the annular sidewall includes an annular segment and an inclined surface. One end of the annular segment is connected to the second groove wall, and the other end is connected to the inclined surface. The inclined surface extends in a direction away from the receiving space, and the side of the inclined surface away from the annular segment is smoothly connected to the first groove wall.
[0014] In some embodiments, the outer cylinder assembly of the roller further includes a first baffle plate, which extends from the connection between the annular sidewall and the second groove wall toward the drainage groove, and the angle between the first baffle plate and the plane containing the opening of the drainage groove is less than or equal to 30°.
[0015] In some embodiments, the outer cylinder body includes a first outer cylinder portion and a second outer cylinder portion along the thickness direction. The second outer cylinder portion is sleeved inside the first outer cylinder portion. The first outer cylinder portion includes a first cylinder wall, and the second outer cylinder portion includes a second cylinder wall. The docking of the first outer cylinder portion and the second outer cylinder portion forms the annular sidewall. The drain outlet is disposed on the first outer cylinder portion.
[0016] In some embodiments, the outer cylinder assembly of the drum further includes a second baffle plate disposed within the receiving space. The second baffle plate is connected to the first cylinder wall and extends axially along the annular side wall. The end of the second baffle plate is fixed to the edge of the drain groove.
[0017] This application embodiment also provides a washing machine, including:
[0018] A drum outer cylinder assembly, wherein the drum outer cylinder assembly is the aforementioned drum outer cylinder assembly;
[0019] The inner drum assembly is disposed within the receiving space of the outer drum assembly.
[0020] In the drum outer tub assembly and washing machine provided in this application embodiment, the drum outer tub assembly includes an outer tub body and a guide plate. The outer tub body has a receiving space and includes an annular sidewall, a first tub wall, and a second tub wall. The first tub wall and the second tub wall are arranged opposite to each other. The annular sidewall is connected to the first tub wall and the second tub wall respectively. The annular sidewall, the first tub wall, and the second tub wall are connected to enclose and form the receiving space. A drainage groove is formed by a recess at the bottom of the annular sidewall. The drainage groove is connected to the receiving space, and a drain outlet is provided on the bottom wall of the drainage groove. The guide plate is provided at the drain outlet and extends towards the receiving space. A guide channel is formed between the guide plate and the edge of the drain outlet. The guide channel is used to guide the water flow through the surface of the guide plate and then discharge it through the drain outlet. The design of the drainage groove allows the water flow to quickly converge at the bottom of the outer tub and flow directly to the drain outlet through the guide channel, reducing the residence time of the water flow at the bottom of the outer tub, thereby significantly improving the drainage efficiency. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of the drum outer cylinder assembly provided in an embodiment of this application.
[0023] Figure 2 for Figure 1 A schematic diagram of the cross section along AA.
[0024] Figure 3 for Figure 2 Enlarged view at point B.
[0025] Figure 4 This is a schematic diagram of the structure of the outer drum assembly and the inner drum assembly provided in the embodiments of this application. Detailed Implementation
[0026] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0027] This application provides a drum outer tub assembly and a washing machine, which can improve drainage efficiency. The following is a detailed description with reference to the accompanying drawings.
[0028] Please see Figure 1 as well as Figure 2 , Figure 1 This is a schematic diagram of the structure of the drum outer cylinder assembly provided in the embodiments of this application. Figure 2 for Figure 1 A schematic diagram of the cross section along AA.
[0029] This application provides a roller outer cylinder assembly 100, which includes an outer cylinder body 10 and a guide plate 20.
[0030] The outer cylinder body 10 has a receiving space 12 for installing the inner cylinder assembly. The outer cylinder body 10 includes an annular sidewall 11, a first cylinder wall 141, and a second cylinder wall 151. The first cylinder wall 141 and the second cylinder wall 151 are arranged opposite to each other. The annular sidewall 11 is connected to the first cylinder wall 141 and the second cylinder wall 151 respectively. The annular sidewall 11, the first cylinder wall 141, and the second cylinder wall 151 are connected to enclose and form the receiving space 12.
[0031] The bottom of the annular sidewall 11 is recessed to form a drainage groove 13, which is connected to the receiving space 12. A drainage outlet 131 is provided on the bottom wall of the drainage groove 13 as a key channel for water discharge.
[0032] A guide plate 20 is positioned at the drain outlet 131 and can be integrally injection molded with the outer cylinder body 10. The guide plate 20 extends into the receiving space 12, forming a flow channel with the edge of the drain outlet 131. This channel guides the water flow across the surface of the guide plate 20 and out through the drain outlet 131. The flow channel formed by the guide plate 20 and the edge of the drain outlet 131 provides a clear and direct discharge path for the water. This design prevents the water flow from forming a water curtain barrier, directly passing through the surface of the drain outlet 131, making it difficult to enter the drain outlet 131, or causing unnecessary turbulence. The guide plate 20 ensures that the water flow can be smoothly discharged along the preset path. Through simulation analysis and actual testing, it can be observed that the water flow within the guide channel is more stable, reducing noise and vibration caused by water turbulence.
[0033] As can be seen, the design of the drainage channel 13 allows water to quickly converge at the bottom of the outer cylinder and flow directly to the drain outlet 131 through the guide channel. Compared with traditional designs, this structure reduces the residence time of water at the bottom of the outer cylinder, thereby significantly improving drainage efficiency.
[0034] In traditional washing machine outer drum drainage structures, water flow is often agitated due to inertia and the rotation of the inner drum, resulting in a "water-laden spin-drying" phenomenon, which increases internal noise and causes unstable operation. However, the drum outer drum assembly 100 of this embodiment effectively constrains the water flow direction through the design of the guide plate 20, reducing collisions and agitation between the water and the inner drum wall. The presence of the guide channel ensures a relatively stable water flow during discharge, preventing the water from deviating from its preset path due to inertia. This not only reduces the internal noise level of the washing machine but also reduces the additional load and energy consumption caused by water agitation.
[0035] In some embodiments, the angle between the guide plate 20 and the plane containing the bottom wall of the tank is 15° to 90°, for example, 15°, 30°, 45°, 60°, 75°, or 90°. When the angle between the guide plate 20 and the plane containing the bottom wall of the tank is less than 90°, the guide plate 20 will be moderately tilted towards the direction of water flow impact. This design aims to optimize the water flow guidance effect.
[0036] It is important to clarify that the angle between the guide plate 20 and the plane of the bottom wall of the trough refers to the angle formed between the plane of the guide plate 20 itself (or more accurately, the tangent at the contact point between the guide plate 20 and the bottom wall of the trough) and the plane of the bottom wall of the drainage trough 13 when the guide plate 20 extends from the edge of the drain outlet 131 into the interior of the receiving space 12.
[0037] When the included angle is within the range of 15° to 90°, the guide plate 20 can better adapt to changes in the direction and speed of water flowing from the receiving space 12 to the drain outlet 131. Taking an included angle of 45° as an example (this angle is within the above effective range), actual tests showed that after contacting the guide plate 20, the water flow can flow more smoothly along the surface of the guide plate 20. During this process, the rebound and turbulence of the water flow at the guide plate 20 are significantly reduced, and the water flow path is clearer and more stable.
[0038] Furthermore, within this reasonable angle range, the structural strength of the guide plate 20 is effectively guaranteed, enabling it to better withstand the impact of water flow and the vibrations and stresses during the washing machine's operation, thereby enhancing the connection stability between the guide plate 20 and the drain trough 13. Long-term practical use tests have shown that the drum outer tub assembly 100 with this angle design has a significantly extended service life. This means that the probability of users needing to repair the guide plate 20 or related components due to damage during use is greatly reduced, thus lowering maintenance costs and improving the user experience.
[0039] Please see Figure 2 as well as Figure 3 , Figure 3 for Figure 2Enlarged view at point B. The guide plate 20 has a curved surface structure, with the concave side facing the direction of water flow impact. This better adapts to the impact force of the water flow, reducing rebound and turbulence on the surface of the guide plate 20, while increasing the contact area between the water flow and the surface of the guide plate 20, which is beneficial for smooth water discharge. The curved surface structure increases the contact area between the water flow and the surface of the guide plate 20, which is beneficial for smooth water discharge. Through simulation analysis and actual testing, it can be observed that the water flow on the curved guide plate 20 is smoother, the flow velocity distribution is more uniform, and turbulence and stagnation of water flow are effectively avoided during the drainage process.
[0040] The flow channel includes a first sub-channel 31 and a second sub-channel 32. This dual-channel design significantly optimizes the drainage process and improves drainage efficiency and stability. The flow guide plate 20 has a first surface 21 and a second surface 22 along its thickness direction. The first surface 21 and a portion of the edge of the drain outlet 131 form the first sub-channel 31, and the second surface 22 and a portion of the edge of the drain outlet 131 form the second sub-channel 32.
[0041] When one channel is affected by water flow fluctuations, the other channel can still maintain a relatively stable drainage state. For example, when the first sub-channel 31 experiences an increase in flow velocity and pressure due to a sudden water flow impact, the second sub-channel 32 can receive some of the water flow, balancing the overall drainage pressure and flow velocity; and vice versa. This mutually coordinated and buffering working mechanism effectively buffers the impact of water flow fluctuations, ensures the stability of the drainage process, and greatly reduces the risk of drainage failures caused by water flow turbulence.
[0042] Understandably, the first surface 21 can face the direction of water flow impact, while the second surface 22 can face away from the direction of water flow impact. When water impacts the first surface 21, it can enter the drain outlet 131 along the first sub-channel 31 and finally be discharged through the drain channel. Some water will cross the first surface 21 and enter the drain outlet 131 along the second sub-channel 32. The second sub-channel 32 can adjust the water flow speed and direction so that it can smoothly merge with the water flowing out of the first sub-channel 31 at the drain outlet 131.
[0043] In summary, the dual-channel design of the flow guide channel in this embodiment, combined with the unique structure of the first surface 21 of the flow guide plate 20 facing the direction of water flow impact and the second surface 22 facing away from the direction of water flow impact, provides a comprehensive and multi-level solution for optimizing the drainage performance of the washing machine by significantly improving drainage efficiency, effectively enhancing drainage stability, and optimizing water flow guidance and diversion. This significantly improves the overall performance of the washing machine and the user experience.
[0044] In some embodiments, the drain trough 13 has a first trough wall and a second trough wall disposed opposite to each other. The first trough wall and the second trough wall extend obliquely from both sides of the bottom wall of the trough towards the receiving space 12, and the first trough wall and the second trough wall are respectively connected to the annular sidewall 11. When the washing machine is washing or spinning, a large amount of water is generated in the receiving space 12. The oblique trough wall can guide the water flow to converge quickly to the bottom of the drain trough 13. The oblique trough wall provides a downward guiding force for the water flow, reducing the residence time of the water flow on the trough wall.
[0045] Meanwhile, the connection between the inclined trough wall and the annular sidewall 11 allows the water flow to enter the subsequent drainage channel more smoothly after it converges at the bottom of the drainage trough 13, further optimizing the drainage process and improving drainage efficiency.
[0046] Please see Figure 2 as well as Figure 4 , Figure 4 This is a schematic diagram of the structure of the outer drum assembly and the inner drum assembly provided in the embodiments of this application. The annular sidewall 11 includes an annular segment 111 and an inclined surface 112. One end of the annular segment 111 is connected to the second groove wall, and the other end is connected to the inclined surface 112. The inclined surface 112 extends in a direction away from the receiving space 12, and the side of the inclined surface 112 away from the annular segment 111 is smoothly connected to the first groove wall.
[0047] During the washing machine's drainage process, as water flows from the second tank wall into the annular section 111, the curved structure of the annular section 111 buffers and guides the water flow. Specifically, after entering the annular section 111, the water's flow direction and speed gradually change due to the obstruction and guidance of the curved structure. Because the curved structure has continuity and gradual change, the water flow will not experience violent turbulence, eddies, or other unstable phenomena due to sudden changes in flow direction. Instead, it can smoothly adjust its flow state, achieving a gradual transition in speed and direction.
[0048] The inclined surface 112 extends away from the receiving space 12, a design that provides a clear discharge direction for the water flow. This inclined surface 112 can be tangential to the annular section 111 to conform to the water flow. After flowing out of the annular section 111, the water continues to flow along the inclination direction of the inclined surface 112, thereby reducing splashing and backflow at the outlet of the drainage trough 13. Simultaneously, the smooth connection between the inclined surface 112 and the first trough wall ensures that the water flow is not affected by abrupt structural changes when transitioning from the inclined surface 112 to the first trough wall, guaranteeing the continuity and stability of the water flow and facilitating the rapid and smooth discharge of water from the drainage trough 13.
[0049] An inner drum assembly 200 is housed within the accommodating space 12. The inclined surface 112 effectively increases the bottom space height of the outer drum assembly 100. Due to the increased bottom space, the distance between the bottom water and the rotating inner drum assembly 200 increases, making it less likely for the bottom water to come into contact with the rotating inner drum assembly 200. This reduces the interaction force between the inner drum and the bottom water during rotation, thereby reducing the resistance to inner drum rotation and helping to lower the washing machine's power consumption.
[0050] Please continue reading. Figure 2 as well as Figure 3 The outer drum assembly 100 also includes a first baffle plate 40, which extends from the connection between the annular side wall 11 and the second groove wall toward the drainage groove 13. The angle between the first baffle plate 40 and the plane containing the opening of the drainage groove 13 is less than or equal to 30°.
[0051] Because the angle between the first baffle plate 40 and the plane containing the opening of the drainage trough 13 is less than or equal to 30°, this small angle causes most of the water flow to be reflected back into the drainage trough 13 when it impacts the first baffle plate 40, rather than passing over the baffle plate.
[0052] Although the first baffle plate 40 can reflect most of the water flow, in the actual drainage process, a small amount of water may still pass over the first baffle plate 40 due to excessive water flow impact or other accidental factors. However, since the angle between the first baffle plate 40 and the plane where the drainage channel 13 is located is small, these water flows that pass over the baffle plate will be affected by multiple forces during their forward movement.
[0053] On the one hand, the water flow's momentum is significantly reduced after passing over the baffle due to collisions and friction with it. According to the law of conservation of energy, the water's kinetic energy is converted into internal energy and some potential energy, leading to a decrease in flow velocity. On the other hand, gravity always exerts a downward force on the water flow. Under the combined influence of insufficient momentum and gravity, the water flowing over the baffle gradually changes its direction, either flowing along the baffle surface or directly into the drainage channel 13, preventing water from being carried away and escaping.
[0054] The first baffle plate 40 can be arranged parallel to the opening of the drain groove 13 or extend into the interior of the drain groove 13. This diverse arrangement provides greater flexibility in the design of the washing machine drum outer tub assembly 100, enabling it to adapt to different drainage needs.
[0055] When the first baffle plate 40 is set parallel to the opening of the drain trough 13, it can evenly block the water flow, creating a relatively stable water flow distribution at the opening of the drain trough 13. This arrangement is suitable for situations with relatively small drainage volume and weak water flow impact, effectively preventing water overflow while ensuring a smooth drainage process. For example, in the gentle wash mode of a washing machine, the drainage volume is small, and the parallel baffle plate can fully exert its water-blocking function, ensuring that the water flows smoothly into the drain trough 13.
[0056] When the first baffle plate 40 extends inward into the drainage trough 13, it further expands the water-blocking range and enhances the water-blocking effect. This configuration is suitable for situations with large drainage volumes and strong water flow impact, such as high-speed dehydration modes. The inward-extending baffle plate can better cope with the impact of high-speed water flow, reflecting more water back into the drainage trough 13 and reducing the risk of water overflow. At the same time, the first baffle plate 40 can also guide the water flow along a specific path into the drainage trough 13, optimizing the drainage process and improving drainage efficiency.
[0057] In some embodiments, please continue reading Figure 2 The outer cylinder body 10 includes a first outer cylinder portion 14 and a second outer cylinder portion 15 along its thickness direction, with the second outer cylinder portion 15 fitted inside the first outer cylinder portion 14. The first outer cylinder portion 14 includes a first cylinder wall 141, and the second outer cylinder portion 15 includes a second cylinder wall 151. The mating of the first outer cylinder portion 14 and the second outer cylinder portion 15 forms an annular sidewall 11, and a drain outlet 131 is disposed in the first outer cylinder portion 14. The first outer cylinder portion 14 and the second outer cylinder portion 15 together form a drain groove 13.
[0058] During the washing machine's drainage phase, since the second outer drum 15 is higher than the first outer drum 14 and the drain outlet 131 is located in the first outer drum 14, the water flow in the drain trough 13 follows the principle of gravity, flowing from the relatively higher second outer drum 15 towards the lower first outer drum 14, i.e., moving from back to front, and finally entering the drain outlet 131. Because the water flow can steadily move from back to front and smoothly flow into the drain outlet 131, water accumulation and water residue are less likely to occur in the drain trough 13 and the area between the second outer drum 15 and the first outer drum 14.
[0059] During drainage, the water flow in the drain trough 13 exhibits a specific direction. Since the drain outlet 131 is located in the first outer drum portion 14, the water flows along the thickness direction of the outer drum body 10, from the second outer drum portion 15 towards the first outer drum portion 14, i.e., from back to front. When the water reaches the first drum wall 141, it impacts the first drum wall 141 due to inertia, then changes its flow direction and flows upward along the first drum wall 141. This water flow pattern causes water spraying in the door seal area located on the first drum wall 141. Water spraying in the door seal area not only causes water accumulation inside the washing machine, affecting its normal operation, but may also lead to water leakage to the outside of the washing machine, damaging the surrounding environment and even posing electrical safety hazards.
[0060] Please continue reading. Figure 2 as well as Figure 3 The outer drum assembly 100 also includes a second baffle plate 50, which is disposed within the receiving space 12. The second baffle plate 50 is connected to the first drum wall 141 and extends axially along the annular side wall 11. The end of the second baffle plate 50 is fixed to the edge of the drain groove 13, and can directly block the water flow flowing upward along the first drum wall 141. When the water flow hits the first drum wall 141 and attempts to flow upward, the second baffle plate 50 will intercept the water flow's path, preventing the water flow from continuing to surge upward, thereby preventing the water flow from reaching the door seal area and spraying out.
[0061] The bottom wall surface of the drainage trough 13 is provided with guide ribs, which extend axially along the annular sidewall 11. The guide ribs are used to direct the water flow to the drain outlet 131, reducing the residence time of the water in the drainage trough 13 and thus significantly improving the drainage efficiency.
[0062] This application embodiment also provides a washing machine, which includes an outer drum assembly 100 and an inner drum assembly, wherein the outer drum assembly 100 is the aforementioned outer drum assembly 100; the inner drum assembly is disposed within the receiving space 12 of the outer drum assembly 100.
[0063] During the washing machine's drainage stage, the drainage structure design of the outer drum assembly 100 positively impacts the drainage effect of the water flow generated by the inner drum assembly. As mentioned earlier, the annular segment 111 and inclined surface 112 of the annular sidewall 11 in the outer drum assembly 100 guide the water flow smoothly and quickly out of the drain trough 13. This efficient drainage method helps to promptly remove wastewater generated by the inner drum assembly during washing and spin-drying, preventing the accumulation of wastewater in the receiving space 12. This reduces problems such as increased rotational resistance of the inner drum and bacterial growth caused by water accumulation, thereby improving the washing machine's drainage efficiency and reducing its power consumption.
[0064] In the drum outer tub assembly 100 and washing machine provided in this application embodiment, the drum outer tub assembly 100 includes an outer tub body 10 and a guide plate 20. The outer tub body 10 has a receiving space 12 and includes an annular sidewall 11, a first tub wall 141 and a second tub wall 151. The first tub wall 141 and the second tub wall 151 are disposed opposite to each other. The annular sidewall 11 is connected to the first tub wall 141 and the second tub wall 151 respectively. The annular sidewall 11, the first tub wall 141 and the second tub wall 151 are connected to enclose and form the receiving space 12. A drainage groove 13 is formed in the bottom recess of the annular sidewall 11. The drainage groove 13 communicates with the receiving space 12. A drain outlet 131 is provided on the bottom wall of the drainage groove 13. A guide plate 20 is positioned at the drain outlet 131, extending towards the receiving space 12. The guide plate 20 and the edge of the drain outlet 131 form a flow channel, which guides the water flow across the surface of the guide plate 20 and out through the drain outlet 131. The design of the drainage trough 13 allows the water flow to quickly converge at the bottom of the outer cylinder and, guided by the flow channel, flow directly to the drain outlet 131, reducing the water's residence time at the bottom of the outer cylinder and thus significantly improving drainage efficiency.
[0065] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0066] In the description of this application, 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. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.
[0067] The drum outer tub assembly and washing machine provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A drum outer barrel assembly, characterized by, include: The outer cylinder body has a receiving space. The outer cylinder body includes an annular sidewall, a first cylinder wall, and a second cylinder wall. The first cylinder wall and the second cylinder wall are arranged opposite to each other. The annular sidewall is connected to the first cylinder wall and the second cylinder wall respectively. The annular sidewall, the first cylinder wall, and the second cylinder wall are connected to enclose and form the receiving space. A drainage groove is formed by a recess at the bottom of the annular sidewall. The drainage groove is connected to the receiving space. A drainage outlet is provided on the bottom wall of the drainage groove. A flow guide plate is disposed at the drain outlet and extends toward the receiving space. The flow guide plate and the edge of the drain outlet form a flow channel, which is used to guide water flow through the surface of the flow guide plate and then discharge through the drain outlet.
2. The drum outer assembly of claim 1, wherein, The angle between the guide plate and the plane containing the bottom wall of the trough is 15° to 90°.
3. The drum outer assembly of claim 2, wherein, The guide plate has a curved surface structure, with the concave surface of the curved surface structure facing the direction of water flow impact.
4. The drum outer assembly of claim 3, wherein, The flow channel includes a first sub-channel and a second sub-channel; the flow guide plate has a first surface and a second surface along its thickness direction, the first surface and a portion of the edge of the drain outlet forming the first sub-channel, and the second surface and a portion of the edge of the drain outlet forming the second sub-channel.
5. The drum outer shell assembly according to any one of claims 1 to 4, characterized in that The drainage trough has a first trough wall and a second trough wall arranged opposite to each other. The first trough wall and the second trough wall extend obliquely from both sides of the bottom wall of the trough towards the receiving space. The first trough wall and the second trough wall are respectively connected to the annular side wall.
6. The drum outer assembly of claim 5, wherein, The annular sidewall includes an annular segment and an inclined surface. One end of the annular segment is connected to the second groove wall, and the other end is connected to the inclined surface. The inclined surface extends in a direction away from the receiving space, and the side of the inclined surface away from the annular segment is smoothly connected to the first groove wall.
7. The drum outer cylinder assembly according to claim 5, characterized in that, It also includes a first baffle plate, which extends from the connection between the annular sidewall and the second groove wall toward the drainage groove, and the angle between the first baffle plate and the plane where the groove opening of the drainage groove is located is less than or equal to 30°.
8. The drum outer cylinder assembly according to any one of claims 1 to 4, characterized in that, The outer cylinder body includes a first outer cylinder portion and a second outer cylinder portion along the thickness direction. The second outer cylinder portion is fitted inside the first outer cylinder portion. The first outer cylinder portion includes the first cylinder wall, and the second outer cylinder portion includes the second cylinder wall. The connection between the first outer cylinder portion and the second outer cylinder portion forms the annular sidewall. The drain outlet is provided in the first outer cylinder portion.
9. The drum outer cylinder assembly according to claim 8, characterized in that, It also includes a second baffle plate, which is disposed within the accommodating space. The second baffle plate is connected to the first cylindrical wall and extends axially along the annular side wall. The end of the second baffle plate is fixed to the edge of the drainage groove.
10. A washing machine, characterized in that, include: A drum outer cylinder assembly, wherein the drum outer cylinder assembly is the drum outer cylinder assembly according to any one of claims 1 to 9; The inner drum assembly is disposed within the receiving space of the outer drum assembly.