A vertical washing machine

Abstract

The utility model relates to a washing machine technical field discloses a vertical washing machine, including box, outer drum, inner drum, multiple water guide holes, multiple water guide fluted plate, water guide pipe and sealing device, inner drum is connected with power device through pivot, and the bottom of inner drum is provided with multiple water guide holes, and the outer wall of inner drum is provided with multiple water guide fluted plates in the radioactivity, and is formed with water guide cavity with the outer wall of inner drum cooperation, and the through hole corresponding with water guide fluted plate is provided on inner drum, and one end of water guide pipe is communicated with the export of water guide cavity, and the other end is communicated with water guide hole, and sealing device is provided on outer drum, through the cooperation of inner drum outer wall and water guide fluted plate and form water guide cavity, and the corresponding through hole and water guide pipe are matched, realize the discharge of water in water guide cavity, and the sealing device of outer drum constructs drainage channel, both effectively reduce the water storage volume outside inner drum with the help of water guide cavity, water saving and saving detergent, prevent the water flow in inner drum and water guide cavity from the inner and outer drum gap.

Description

Technical Field

[0001] This utility model relates to the field of washing machine technology, specifically to a vertical washing machine. Background Technology

[0002] Existing upright washing machines have a large gap between the inner and outer tubs. During washing, a lot of water will accumulate in this gap. Due to the location of this water and the water circulation characteristics inside the washing machine, it is difficult for the water to fully participate in the washing process of clothes.

[0003] During actual washing operation, the inner tub mainly relies on rotation and the raised structures on its wall to drive the water flow to wash the clothes. However, the water in the gap between the outer tub and the inner tub cannot effectively circulate and mix with the washing water in the inner tub, and can only remain in a relatively still or weakly flowing state. During washing, the water in the gap between the outer and inner tubs not only has little effect on washing clothes, but also dissolves some of the detergent, resulting in a waste of water and detergent.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a vertical washing machine, which aims to solve the problem of water and detergent waste caused by the gap between the inner and outer tubs of the existing vertical washing machine.

[0006] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0007] A vertical washing machine includes a casing and an outer tub disposed inside the casing. The bottom of the outer tub has a drain hole. A power unit is disposed inside the casing. The machine also includes:

[0008] The inner tub is rotatably disposed inside the outer tub; a rotating shaft is provided at the bottom of the inner tub, and one end of the rotating shaft away from the inner tub passes through the outer tub and is connected to the power device;

[0009] Multiple water guide holes are provided at the bottom of the inner tub; the water guide holes are connected to the drain holes;

[0010] Multiple water-guiding groove plates are radially arranged on the outer wall of the inner tub and cooperate with the outer wall of the inner tub to form a water-guiding cavity; the inner tub is provided with through holes corresponding to the water-guiding groove plates to connect the water-guiding cavity with the internal cavity of the inner tub;

[0011] A water guide pipe, one end of which is connected to the outlet of the water guide cavity, and the other end of which is connected to the water guide hole;

[0012] A sealing device is provided on the outer tub; the sealing device cooperates with the inner tub and the rotating shaft to form a drainage channel between the inner tub and the outer tub.

[0013] Furthermore, the sealing device includes:

[0014] A first sealing component is disposed on the outer barrel; the first sealing component cooperates with the rotating shaft to achieve a seal between the rotating shaft and the outer barrel;

[0015] A second sealing component is disposed on the outer tub; the second sealing component cooperates with the bottom of the inner tub to achieve a seal between the outer tub and the inner tub.

[0016] Furthermore, the first sealing assembly includes:

[0017] A bearing housing is disposed inside the outer barrel; the bearing housing has a mounting hole in its center, and the bottom of the outer barrel has a first opening, with the bearing housing located inside the first opening;

[0018] Multiple bearings are disposed within the mounting holes;

[0019] The first annular water seal has one end set on the inner wall of the mounting hole and the other end abutting against the rotating shaft.

[0020] Furthermore, the second sealing assembly includes:

[0021] An outer tub ring rib is provided on the outer tub; the outer tub ring rib is arranged coaxially with the outer tub.

[0022] The second annular water seal is disposed on the inner side of the annular rib of the outer barrel; the second annular water seal abuts against the inner barrel.

[0023] Furthermore, a fixed flange is provided at the bottom of the inner tub, and a flange annular rib is provided at the bottom of the fixed flange. The second annular water seal abuts against the flange annular rib, and the rotating shaft is connected to the fixed flange by bolts.

[0024] Furthermore, the inner tub is provided with a protective cover, which is located on top of the fixed flange. The protective cover has a drainage hole and cooperates with the fixed flange to form a receiving cavity.

[0025] Furthermore, the protective cover is a pulsator with a protrusion in the middle and blades at the bottom.

[0026] Furthermore, a drain valve is provided at the outlet of the drain hole.

[0027] Furthermore, the inner barrel is provided with side blades.

[0028] Furthermore, the side wall of the side blade forms a certain angle with the inner wall of the inner barrel.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] In this invention, the inner tub is connected to the power unit via a rotating shaft. Multiple water guide holes are located at the bottom of the inner tub and are connected to the drain hole. Multiple radially arranged water guide grooves are formed on the outer wall of the inner tub, cooperating with the outer wall to form a water guide cavity. The inner tub has through holes corresponding to the water guide grooves. One end of a water guide pipe is connected to the outlet of the water guide cavity, and the other end is connected to the water guide hole, allowing water to drain from the water guide cavity. A sealing device is provided on the outer tub to form a drainage channel between the inner and outer tubs. By providing water guide holes at the bottom of the inner tub that connect to the drain hole, and forming a water guide cavity on the outer wall with radially arranged water guide grooves, along with corresponding through holes and water guide pipes, water can be drained from the water guide cavity. The sealing device on the outer tub creates a drainage channel, effectively reducing the water volume outside the inner tub through the water guide cavity, achieving water and detergent savings. The sealing device also prevents leakage, preventing water from flowing into the gap between the inner and outer tubs, thus optimizing the water resource utilization and operational stability of the vertical washing machine. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0032] Figure 2 for Figure 1 Enlarged diagram of point A.

[0033] Figure 3 This is a schematic diagram of the water pipe structure of this utility model.

[0034] Figure 4 for Figure 3 Enlarged diagram of point B.

[0035] Figure 5 for Figure 3 Enlarged diagram of point C.

[0036] Figure 6 This is a schematic diagram of the side blade structure of this utility model.

[0037] The numbers in the diagram represent: 1. Outer tub; 11. Drain hole; 2. Inner tub; 21. Shaft; 22. Water guide hole; 23. Water guide groove plate; 24. Water guide pipe; 25. Fixed flange; 251. Flange annular rib; 26. Protective cover; 261. Leakage hole; 3. Power unit; 4. Sealing device; 41. First sealing assembly; 411. Bearing seat; 412. Bearing; 413. First annular water seal; 42. Second sealing assembly; 421. Outer tub annular rib; 422. Second annular water seal; 5. Side blade. Detailed Implementation

[0038] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0039] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, 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 indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In view of the shortcomings of the prior art, this embodiment provides a vertical washing machine, which can be referred to as follows:

[0042] As attached Figure 1 and attached Figure 2As shown, a vertical washing machine includes a casing, an outer tub 1, an inner tub 2, multiple water guide holes 22, multiple water guide groove plates 23, a water guide pipe 24, and a sealing device 4. The outer tub 1 is disposed inside the casing. The inner tub 2 is rotated by a power device 3 connected to a bottom rotating shaft 21. The rotating shaft 21 passes through the bottom wall of the outer tub 1 and is sealed to the bottom wall. Water guide holes 22 are opened at the bottom of the inner tub 2 to connect to the drain holes 11 of the outer tub 1. Multiple water guide groove plates 23 are radially arranged on the outer wall of the inner tub 2. The side of the water guide groove plate 23 near the inner tub 2 has a groove. The water guide groove plates 23 cooperate with the outer wall of the inner tub 2 so that the grooves of the water guide groove plates 23 cooperate with the outer wall of the inner tub 2 to form a bottom. The inner tub 2 has a water-guiding cavity with an outlet, which is located within the gap between the inner tub 2 and the outer tub 1 and is smaller than the size of the gap. The inner tub 2 has a through hole corresponding to the water-guiding groove plate 23 to connect the water-guiding cavity with the inner tub 2, facilitating drainage and dehydration of clothes. A water-guiding pipe 24 is also provided between the inner tub 2 and the outer tub 1. One end of the water-guiding pipe 24 is connected to the outlet of the water-guiding cavity, and the other end is connected to the water-guiding hole 22 to realize drainage in the water-guiding cavity. The outer tub 1 is also provided with a sealing device 4, which cooperates with the inner tub 2 and the rotating shaft 21 to form a drainage channel between the inner tub 2 and the outer tub 1, facilitating the flow of water from the water-guiding hole 22 to the drain hole 11.

[0043] The water-guiding groove plate 23 refers to a plate-like structure evenly distributed along the circumference of the inner tub 2. It can be fixed to the outer wall of the inner tub 2 by welding or integral molding, and the water flow is guided directionally through the water-guiding cavity formed by the groove plate and the outer wall of the inner tub 2. The water-guiding pipe 24 is a channel connecting the water-guiding cavity and the water-guiding hole 22. It can be a flexible silicone tube or a rigid plastic tube, used to establish a drainage path between the inner and outer tubs 1. The sealing device 4 is a dual structure including a seal on the rotating shaft 21 and a seal on the inner tub 2. It can be a combination of a mechanical seal and an elastic water seal to ensure the sealing performance between the rotating and fixed parts.

[0044] Specifically, during washing, as water is injected into the inner tub 2, it flows into the water guiding cavity. Due to the small volume of the water guiding cavity, water usage can be effectively reduced, and uneven distribution and waste of detergent can be avoided. When draining, the drain hole 11 opens, and the water in the water guiding cavity and the water in the inner tub 2 flows through the water guiding hole 22 to the drain pipe, and then is discharged through the drain hole 11. When spinning, the water from the clothes enters the water guiding cavity through the through hole, and with the action of the water guiding cavity and the water guiding pipe 24, flows through the water guiding hole 22, the drain pipe and the drain hole 11, and is then discharged out of the box.

[0045] Compared to existing technologies, traditional washing machines waste water by directing it into the gap between the inner tub 2 and the outer tub 1 during filling. Increased water flow also leads to increased detergent usage, and the water and detergent in the gap are largely unused in the washing process, resulting in further detergent waste. This solution, through the combination of a water-guiding groove plate 23 and a water-guiding pipe 24, reduces the amount of water stored outside the inner tub 2. Simultaneously, the water-guiding cavity, in conjunction with the water-guiding pipe 24, also facilitates drainage and spin-drying, effectively saving water and reducing detergent usage.

[0046] This application utilizes a water-guiding groove plate 23 that cooperates with the outer wall of the inner tub 2 to form a smaller water-guiding cavity, replacing the traditional water storage mode between the inner and outer tubs 1 of a washing machine. This reduces ineffective water storage outside the inner tub 2 during washing, thus lowering water consumption. Simultaneously, because the water-guiding cavity is connected to the internal cavity of the inner tub 2, detergent can fully participate in the washing process with the water flow, avoiding the waste of detergent caused by water not participating in the washing process in the traditional intermittent water storage mode. Furthermore, during spin-drying, moisture from the clothes enters the water-guiding cavity through the through-hole and is discharged through the water-guiding pipe 24, water-guiding hole 22, and drain hole 11, resulting in efficient drainage and spin-drying. The sealing device 4 ensures the sealing of rotating and fixed components, improving operational stability, effectively saving water resources and detergent, and optimizing the washing and spin-drying process.

[0047] In this embodiment, the outer barrel 1 is mounted on the box body by a suspension assembly, which is existing technology; the power unit 3 is a motor.

[0048] As attached Figure 1 and attached Figure 2 As shown, this application further proposes a sealing device 4 including a first sealing component 41 and a second sealing component 42. The first sealing component 41 is disposed on the outer barrel 1 and cooperates with the rotating shaft 21 to achieve a seal between the rotating shaft 21 and the outer barrel 1; the second sealing component 42 is disposed on the outer barrel 1 and cooperates with the bottom of the inner barrel 2 to achieve a seal between the outer barrel 1 and the inner barrel 2.

[0049] The first sealing component 41 refers to the dynamic sealing structure located at the connection between the rotating shaft 21 and the outer tub 1, which can be implemented using a combination of a bearing housing 411 and an annular water seal. The bearing housing 411 supports the rotation of the rotating shaft 21, and the annular water seal forms an axial seal through elastic contact, preventing water leakage along the axial direction of the rotating shaft 21. The second sealing component 42 refers to the planar sealing structure located between the bottom of the inner tub 2 and the outer tub 1, which can be implemented using a combination of annular ribs and annular water seals. The annular ribs form a sealing contact surface, and the annular water seal compensates for the assembly gap through elastic deformation, preventing water from seeping out from the bottom edge of the inner tub 2.

[0050] Specifically, when the inner tub 2 rotates at high speed, the annular water seal in the first sealing assembly 41 maintains dynamic contact with the rotating shaft 21 under the action of the annular spring. The multi-stage sealing surface formed by the three inclined angles on the annular water seal can adapt to the radial runout of the rotating shaft 21. The annular water seal in the second sealing assembly 42 forms a planar contact seal with the annular rib 251 of the bottom flange of the inner tub 2, generating a self-tightening effect under the action of washing water pressure. The two sealing assemblies are designed for the physical characteristics of the dynamic seal of the rotating shaft 21.

[0051] The sealing device 4 in this solution achieves efficient sealing through the collaborative work of the first sealing component 41 and the second sealing component 42: the first sealing component 41 supports the rotating shaft 21 with the bearing seat 411, and the annular water seal adapts to the radial runout of the rotating shaft 21 through elastic contact and multi-stage sealing surfaces, preventing water leakage along the axial direction of the rotating shaft 21; the second sealing component 42 forms a planar contact with the water seal with annular ribs, preventing water in the inner tub 2 and the water guiding cavity from flowing into the gap between the inner tub 2 and the outer tub 1, thus preventing water waste. The double seal is designed for the characteristics of rotating parts, ensuring the sealing performance of the washing machine during operation and preventing water leakage from affecting the stable operation of the equipment and the waste of water resources.

[0052] As attached Figure 3 and attached Figure 5 As shown, this application further proposes a first sealing assembly 41 including a bearing seat 411 disposed inside the outer barrel 1, the bearing seat 411 having a mounting hole at its center, the bottom of the outer barrel 1 having a first opening, the bearing seat 411 being located inside the first opening; a plurality of bearings 412 being disposed inside the mounting hole; one end of a first annular water seal 413 being disposed on the inner wall of the mounting hole, the other end abutting against the rotating shaft 21, the abutting surface of the first annular water seal 413 having three inclined angle positions, and an annular spring being sleeved on the outer side.

[0053] The bearing housing 411 is a support structure that supports the rotation of the rotating shaft 21. It is fixedly connected to the outer barrel 1 by being nested within the first opening, ensuring the concentricity of the rotating shaft 21 and the outer barrel 1. The mounting hole is a through hole in the center of the bearing housing 411, used to accommodate the axial arrangement of multiple bearings 412. The multiple bearings 412 are rolling element assemblies distributed within the mounting hole, specifically a combination of deep groove ball bearings 412 and tapered roller bearings 412, forming a distributed support structure to disperse the radial load during the rotation of the rotating shaft 21. The first annular water seal 413 is an annular component with an elastic sealing lip. Its contact surface has three inclined angles forming a stepped sealing interface, generating radial preload under the action of an annular spring. The three inclined angles face upwards, with the tips pointing towards the inner barrel 2. The annular spring is an elastic element sleeved on the outside of the first annular water seal 413, specifically a stainless steel helical spring, which maintains the dynamic contact pressure between the water seal and the rotating shaft 21 through evenly distributed elastic force.

[0054] Specifically, the bearing housing 411, by being nested within the first opening, ensures that the rotation axis 21 of the rotating shaft 21 coincides with the central axis of the outer barrel 1. Multiple bearings 412 arranged axially within the mounting hole form a graded support structure, with each bearing 412 bearing a load component in a different direction during high-speed rotation of the rotating shaft 21. The three inclined angles of the first annular water seal 413 form a three-stage sealing interface, allowing for progressive deformation compensation at each inclined angle when the rotating shaft 21 experiences radial displacement. The radial preload applied by the annular spring ensures that the water seal lip remains in contact with the surface of the rotating shaft 21, while simultaneously allowing slight axial displacement of the water seal with the rotating shaft 21. During the rotation of the rotating shaft 21, the deformation compensation at the three inclined angles, combined with the elastic deformation of the spring, works synergistically to form a dynamically adaptive sealing interface.

[0055] Through the above technical solution, this application effectively solves the leakage problem caused by mechanical vibration at the sealing interface of the rotating shaft 21, reduces the frictional resistance when the rotating shaft 21 rotates, avoids water leakage caused by seal failure, and extends the service life of the bearing 412 and the water seal assembly.

[0056] As attached Figure 3 and attached Figure 4 As shown, this application further proposes a second sealing assembly 42 including an annular rib of the outer barrel 1 and a second annular water seal 422 disposed inside the annular rib of the outer barrel 1. The annular rib of the outer barrel 1 is arranged coaxially with the outer barrel 1. The second annular water seal 422 abuts against the inner barrel 2, and its abutting surface is provided with three inclined angle positions and an annular spring is sleeved on the outside.

[0057] The outer barrel 1 annular rib refers to an annular protrusion structure that coincides with the axis of the outer barrel 1. It can be integrally formed with the outer barrel 1 body through injection molding or welding, providing an installation base for the second annular water seal 422 and ensuring the coaxiality of the sealing components. The second annular water seal 422 is an annular seal with multi-stage sealing interfaces, specifically made of rubber or polyurethane. The second annular water seal 422 includes three inclined angles forming a stepped contact surface, achieving dynamic sealing compensation under the radial pressure of the annular spring. The annular spring is an elastic element sleeved on the outer circumference of the second annular water seal 422, specifically a stainless steel helical spring or wave spring, used to apply continuous radial pressure to the second annular water seal 422 to compensate for wear on the sealing surface.

[0058] Specifically, the axial extension of the annular rib of the outer tub 1 ensures that the second sealing assembly 42 remains aligned with the rotation axis 21 of the inner tub 2, avoiding localized wear caused by eccentricity. The three inclined angles of the second annular water seal 422 form three contact zones at different angles, generating a hydrodynamic pressure effect when the inner tub 2 rotates, enhancing the lubrication of the sealing interface. The preload of the annular spring keeps the second annular water seal 422 in close contact with the surface of the inner tub 2. When the inner tub 2 undergoes axial movement, the inclined angle structure allows for slight deformation of the sealing surface without loss of sealing performance. This combined structure forms multiple sealing barriers under dynamic operating conditions, effectively blocking the path of washing water seeping into the gap between the outer tub 1 and the inner tub 2.

[0059] Through the above technical solution, this application effectively prevents washing water from leaking into the gap between the inner and outer tubs 1, reduces the amount of ineffective water in the gap area, allows the detergent solution to fully participate in the washing process of clothes, avoids the ineffective consumption of detergent in the gap area, improves washing efficiency while reducing water waste.

[0060] As attached Figure 3 As shown, this application further proposes that the bottom of the inner barrel 2 is provided with a fixed flange 25, the bottom of the fixed flange 25 is provided with a flange annular rib 251, the second annular water seal 422 abuts against the flange annular rib 251, and the rotating shaft 21 is connected to the fixed flange 25 by bolts.

[0061] The fixed flange 25 refers to an annular disc-shaped structure rigidly connected to the bottom of the inner barrel 2. It can be made of stainless steel casting or engineering plastic injection molding. Its function is to provide an installation reference surface for the rotating shaft 21 and distribute rotational loads. The flange annular rib 251 refers to a raised structure extending circumferentially along the bottom of the fixed flange 25. It can be made of an annular rib integrally formed with the fixed flange 25. It forms a dynamic sealing interface through line contact with the second annular water seal 422. The bolted connection refers to the mechanical connection between the rotating shaft 21 and the fixed flange 25 using threaded fasteners. Specifically, it can be achieved using hexagonal head bolts with anti-loosening washers. Its function is to maintain a constant clamping force of the flange annular rib 251 on the water seal while transmitting torque.

[0062] Specifically, when the inner barrel 2 rotates, the fixed flange 25 is rigidly connected to the rotating shaft 21 via bolts, ensuring that the flange annular rib 251 remains in contact with the second annular water seal 422. The circumferential protrusion of the flange annular rib 251 causes elastic deformation of the water seal, forming a self-compensating sealing structure. When vibration or temperature changes cause fluctuations in component dimensions, the line contact of the flange annular rib 251 reduces frictional resistance, while the bolt preload maintains the contact pressure of the sealing surface, blocking the path of water flow axially through the rotating shaft 21.

[0063] Through the above technical solution, this application solves the problems of sealing reliability and maintainability of the fixed structure of the rotating shaft 21, prevents washing water from seeping into the gap between the inner and outer tubs 1 through the connection of the rotating shaft 21, and reduces energy loss caused by friction of the rotating parts, thus extending the service life of the sealing components.

[0064] As attached Figure 3 As shown, this application further proposes that the inner barrel 2 is provided with a protective cover 26 inside, the protective cover 26 is located on the top of the fixed flange 25, the protective cover 26 is provided with a water leakage hole 261, the protective cover 26 and the fixed flange 25 cooperate to form a receiving cavity, and the outlet of the water guide pipe 24 is located in the receiving cavity.

[0065] The protective cover 26 is an isolation structure covering the top of the fixed flange 25, which physically prevents clothing from directly contacting the fixed flange 25. The drainage hole 261 is a through hole in the protective cover 26, which can be implemented using an array of circular holes with a diameter of 3 mm to 5 mm, for drainage. The receiving cavity is a closed space formed by the protective cover 26 and the fixed flange 25, which can be achieved by extending the edge of the protective cover 26 downwards and fitting it against the surface of the fixed flange 25. Its function is to provide a directional water collection area for the outlet of the water guide pipe 24, preventing water flow dispersion. The outlet of the water guide pipe 24 is located within the receiving cavity, meaning that the end of the water guide pipe 24 extends into the cavity between the protective cover 26 and the fixed flange 25. This can be achieved by bending the water guide pipe 24 so that its outlet faces the receiving cavity, guiding the water flow to be concentrated and discharged, reducing residual water accumulation.

[0066] Specifically, the protective cover 26 is mounted on the bottom wall of the inner tub 2 via bolts or a pivot 21, and the fixing flange 25 can be snapped into the interior of the inner tub 2. Drainage holes 261 are evenly distributed across the planar area of ​​the protective cover 26. When the inner tub 2 rotates, the protrusions or blade structure of the protective cover 26 drive the water flow, and the washing water enters the receiving cavity through the drainage holes 261, then exits through the drain pipe 24. Due to the isolation effect of the protective cover 26, clothing cannot come into contact with the bolted connection of the fixing flange 25, avoiding entanglement or wear; at the same time, the limited aperture of the drainage holes 261 filters impurities such as clothing fibers, preventing blockage of the drainage channel. The outlet of the drain pipe 24 is located at the bottom of the receiving cavity, allowing water to drain quickly under gravity, reducing the risk of bacterial growth caused by water accumulation in the cavity.

[0067] Through the above technical solutions, this application achieves physical isolation between the clothing and the connection structure of the fixed flange 25, preventing damage to the clothing during washing; the aperture design of the drain hole 261 effectively filters impurities and avoids blockage of the drain pipe; the directional water collection design of the outlet of the water guide pipe 24 optimizes the drainage path and reduces water residue, thereby improving equipment reliability while ensuring drainage efficiency.

[0068] This application further proposes that the protective cover 26 is a pulsator with a central protrusion and blades at the bottom.

[0069] The protective cover 26 refers to the structural component that covers the top of the fixed flange 25 and can be rotatably installed with the inner tank 2. The protrusion refers to the three-dimensional structure extending upward from the central area of ​​the protective cover 26, which can be in the shape of a cone or hemispherical geometry. It generates centrifugal force through rotation to lift the water flow at the bottom upward.

[0070] Specifically, when the inner tub 2 rotates, the protective cover 26 can drive the water flow to form a circulation, which not only plays a protective role, but also helps to enhance the rinsing force of the water flow during washing.

[0071] This application further proposes to install a drain valve at the outlet of the drain hole 11.

[0072] The drain valve is a device used to control the opening and closing of the fluid passage. It can be implemented using a solenoid valve or a mechanical valve. Its installation position is located at the fluid outlet end of the drain hole 11, and the drain flow rate is adjusted by the opening and closing action of the valve body. The outlet of the drain hole 11 refers to the part at the end of the drain passage that connects to the external pipeline. Specifically, the drain valve can be fixed by a flange interface or a threaded connection. This position allows the valve to act directly at the end of the drain path, achieving precise control of fluid flow.

[0073] Specifically, when the washing machine enters the draining stage, the drain valve is opened, and the water in the water guide cavity and inner tub 2 flows through the water guide hole 22 into the drain channel and is discharged outward through the drain hole 11. During the washing or rinsing process, the drain valve remains closed, blocking the connection between the drain channel and the outside, preventing water from being accidentally discharged before the washing program is completed. This control method ensures that the draining action only occurs in the preset stage, avoiding water waste caused by unnecessary drainage.

[0074] As attached Figure 2 and attached Figure 6 As shown, this application further proposes that the inner barrel 2 is provided with side blades 5 inside, and the side blades 5 are in a regular shape or an irregular shape.

[0075] The side blade 5 refers to a plate-like structure fixed to the inner wall of the inner barrel 2. It can be implemented using metal or plastic parts with curved or polygonal contours, and its installation direction forms a non-perpendicular angle with the rotation axis 21 of the inner barrel 2. This structure generates multi-directional disturbance by changing the water flow direction, causing water stored in the gap of the outer barrel 1 to be drawn into the inner barrel 2 for circulation. The irregular shape refers to the asymmetrical geometric features of the blade cross-section, which can be achieved using wavy edges, local concavities, or convex shapes. This design generates turbulence by creating an irregular flow field, enhancing the mixing intensity of the water flow in the inner and outer barrel 1 regions.

[0076] Specifically, when the inner barrel 2 rotates, the irregularly shaped side blades 5 push the water flow to produce asymmetrical motion. The curved surface structure at the leading edge of the blades causes the water flow to accelerate and separate along the tangential direction, while the broken profile at the trailing edge induces the fluid to form vortices.

[0077] Furthermore, the side blades on the inner surface of the inner tub 2 can be set to an S-shape or other shapes to increase the variation of water flow and improve the washing effect.

[0078] This application further proposes that the side wall of the side blade 5 forms a certain angle with the inner wall of the inner barrel 2.

[0079] The angle between the side wall of the side blade 5 and the inner wall of the inner barrel 2 refers to the non-parallel tilt angle formed between the side wall surface of the side blade 5 and the inner wall of the inner barrel 2. This can be achieved by pre-setting the tilt angle when welding or integrally molding the side blade 5. This angle causes the water flow to generate asymmetrical impact on the blade surface, thereby changing the direction of water flow.

[0080] Specifically, when the inner tub 2 rotates, the inclined side blades 5 decompose the water flow into axial and radial components. The axial component propels the water flow in a spiral upward motion along the wall of the inner tub 2, enhancing the rubbing effect on clothes. The radial component creates a pressure difference between the inside of the inner tub 2 and the water guiding cavity, forcing water stored in the gap of the outer tub 1 to enter the inner tub 2 through the water guiding groove plate 23 to participate in circulation. The turbulence generated by the inclined side wall can disrupt the water flow boundary layer, preventing detergent from depositing on the blade surface.

[0081] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the solutions disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims.

Claims

1. A vertical washing machine comprising a cabinet and a tub provided inside the cabinet, a bottom of the tub being provided with a drain hole, an inside of the cabinet being provided with a power device, characterized in that, Also includes: The inner tub is rotatably disposed inside the outer tub; a rotating shaft is provided at the bottom of the inner tub, and one end of the rotating shaft away from the inner tub passes through the outer tub and is connected to the power device; Multiple water guide holes are provided at the bottom of the inner tub; the water guide holes are connected to the drain holes; Multiple water-guiding groove plates are radially arranged on the outer wall of the inner tub and cooperate with the outer wall of the inner tub to form a water-guiding cavity; the inner tub is provided with through holes corresponding to the water-guiding groove plates to connect the water-guiding cavity with the internal cavity of the inner tub; A water guide pipe, one end of which is connected to the outlet of the water guide cavity, and the other end of which is connected to the water guide hole; A sealing device is provided on the outer tub; the sealing device cooperates with the inner tub and the rotating shaft to form a drainage channel between the inner tub and the outer tub.

2. A vertical axis laundry washing machine according to claim 1, characterized in that The sealing device includes: A first sealing component is disposed on the outer barrel; the first sealing component cooperates with the rotating shaft to achieve a seal between the rotating shaft and the outer barrel; A second sealing component is disposed on the outer tub; the second sealing component cooperates with the bottom of the inner tub to achieve a seal between the outer tub and the inner tub.

3. A vertical axis washing machine as claimed in claim 2, characterised in that, The first sealing assembly includes: A bearing housing is disposed inside the outer barrel; the bearing housing has a mounting hole in its center, and the bottom of the outer barrel has a first opening, with the bearing housing located inside the first opening; Multiple bearings are disposed within the mounting holes; The first annular water seal has one end set on the inner wall of the mounting hole and the other end abutting against the rotating shaft.

4. A vertical axis washing machine as claimed in claim 2, characterised in that, The second sealing assembly includes: An outer tub ring rib is provided on the outer tub; the outer tub ring rib is arranged coaxially with the outer tub. The second annular water seal is disposed on the inner side of the annular rib of the outer barrel; the second annular water seal abuts against the inner barrel.

5. A vertical axis laundry washing machine according to claim 4, characterized in that The bottom of the inner tub is provided with a fixed flange, and the bottom of the fixed flange is provided with a flange annular rib. The second annular water seal abuts against the flange annular rib, and the rotating shaft is connected to the fixed flange by bolts.

6. A vertical axis washing machine as claimed in claim 5, characterised in that, The inner tub is equipped with a protective cover located on top of the fixed flange. The protective cover has a drainage hole and cooperates with the fixed flange to form a receiving cavity.

7. A vertical axis washing machine as claimed in claim 6, characterized in that The protective cover is a pulsator with a protrusion in the middle and blades at the bottom.

8. A vertical axis washing machine as claimed in claim 1, characterized in that A drain valve is provided at the outlet of the drain hole.

9. A vertical axis washing machine as claimed in claim 1, characterized in that, The inner barrel is equipped with side blades.

10. A vertical axis washing machine as claimed in claim 9, characterized in that, The side wall of the side blade forms a certain angle with the inner wall of the inner barrel.

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