Drying tunnel structure of washing and drying all-in-one machine and washing and drying all-in-one machine

Abstract

According to the drying tunnel structure of the washing and drying all-in-one machine and the washing and drying all-in-one machine, the drying tunnel structure effectively prevents water flow from directly impacting the drying tunnel opening and the interior of the drying tunnel assembly through the annular step of the non-return ring, direct scouring of the water flow to the drying tunnel opening is reduced, corrosion of washing agent residues to the drying tunnel assembly is reduced, and the service life of the washing and drying all-in-one machine is prolonged. Therefore, the long-term stable operation of the drying tunnel system is ensured, and the service life of the drying tunnel system is prolonged. In addition, the drying tunnel assembly is prevented from being loosened or damaged due to water flow impact, the frequency of maintenance and replacement is reduced, and more convenient and efficient washing and drying experience is brought to users. According to the washing and drying all-in-one machine, by optimizing the design of the drying air duct system and the integrated design, the drying efficiency is remarkably improved, the drying time is shortened, and meanwhile the family space is saved. By means of the optimized drying air duct system, hot air can be more evenly distributed on clothes, the drying efficiency is improved, and energy consumption is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and more particularly to a drying duct structure of a washer-dryer and a washer-dryer. Background Art

[0002] Washing machines are indispensable household appliances in modern life. They drive mechanical structures through electricity to wash clothes. With the development of technology, the functions of washing machines have become increasingly perfect. Currently, various washing machines have emerged on the market, such as automatic dosing washing machines, drying-integrated washing machines, etc.

[0003] In a washer-dryer, the drying duct structure is usually directly connected to the external air duct through an opening on the wall of the water storage cylinder. Since the drying duct inlet is within the range of the water flow movement track on the cylinder wall, the high-speed water flow directly impacts the edge of the drying duct opening, and part of the liquid flow enters the interior of the drying duct due to inertia. After the water flow impacts, a turbulent flow is formed, resulting in the deposition of powdery particles at the air duct inlet. At the same time, the traditional drying duct inlet adopts a straight cylinder structure, and its inner wall smoothly transitions with the inner cavity of the water storage cylinder, unable to form an effective water flow blocking mechanism, and the detergent particles continuously penetrate into the interior space of the drying duct along with the dynamic pressure of the water flow.

[0004] Secondly, during the washing process of a washer-dryer, the inner cylinder rotates at a high speed to generate centrifugal force, and the powdery detergent is easily thrown towards the drying duct inlet and the internal area. In low-temperature seasons, the powdery detergent dissolves slowly, exacerbating the situation of being thrown into the drying duct. Most users will choose to dry the clothes after washing. At this time, the powdery detergent remaining in the drying duct will dry under the action of high-temperature air, which is not only difficult to clean but also will further accumulate, forming a vicious cycle, seriously affecting the normal use and service life of the washer-dryer. Summary of the Invention

[0005] To solve the problem in the existing washer-dryer that the powdery detergent is easily thrown towards the drying duct inlet and the internal area, and the powdery detergent remaining in the drying duct will dry under the action of high-temperature air, affecting the normal use and service life of the washer-dryer.

[0006] The first aspect of the present application provides a drying duct structure of a washer-dryer, including: a drying duct assembly, a water storage cylinder, a drying duct opening, and a check ring;

[0007] The drying duct opening is provided on the water storage cylinder, and the drying duct assembly is communicated with the water storage cylinder through the drying duct opening;

[0008] The check ring is disposed around the outer peripheral side of the drying duct opening, and the check ring includes: an annular step, and the annular step continuously extends along the radial direction of the drying duct opening;

[0009] The inner diameter of the drying duct opening is less than or equal to the inner diameter of the check ring.

[0010] In a feasible implementation, the check ring and the water holding cylinder are integrally injection molded.

[0011] In a feasible implementation, one side of the cross-section of the annular step is an indented arc structure;

[0012] The arc structure forms a flow guiding surface on the side facing the inner cavity of the water holding cylinder, and the depression direction of the flow guiding surface is consistent with the circumferential direction of the inner cavity of the water holding cylinder.

[0013] In a feasible implementation, the top surface of the annular step is parallel to the inner wall of the water holding cylinder, and the bottom edge of the annular step is smoothly transitioned with the inner wall of the drying port.

[0014] In a feasible implementation, the inlet end of the air inlet duct of the drying channel assembly is coaxially arranged with the central axis of the drying port, and the edge of the inlet end of the air inlet duct is in contact with the bottom edge of the annular step.

[0015] In a feasible implementation, a sealing ring is embedded at the position where the bottom edge of the annular step is smoothly transitioned with the inner wall of the drying port. The top width of the sealing ring is smaller than the bottom width, and the material of the sealing ring is silicone rubber.

[0016] In a feasible implementation, the radius of curvature of the flow guiding surface varies with the circumferential position, and the radius of curvature of the flow guiding surface near the bottom of the drying port is greater than that at the top.

[0017] In a feasible implementation, the water holding cylinder is provided with a water collecting tank below the drying port. The bottom of the water collecting tank is provided with a drain hole, and the axis of the drain hole has an angle with the vertical direction.

[0018] On the other hand, the present application provides a washing and drying integrated machine, including the drying channel structure of the washing and drying integrated machine described in any one of the above. The washing and drying integrated machine further includes: an inner drum and a drying air duct system;

[0019] The inner drum is rotatably arranged in the water holding cylinder, and the rotation axis of the inner drum coincides with the central axis of the water holding cylinder. The extension direction of the flow guiding surface of the check ring forms a reverse angle with the rotation direction of the inner drum;

[0020] The drying air duct system is communicated with the water holding cylinder through the drying port to form a hot air circulation loop.

[0021] In a feasible implementation, the drying air duct system includes: an air inlet pipe section, a centrifugal fan and a heating device;

[0022] The air inlet pipe section is coaxially butted with the drying port, and the air inlet pipe section is in interference fit with the check ring;

[0023] The axis of the impeller of the centrifugal fan is deflected by a preset angle relative to the central axis of the air inlet pipe section;

[0024] The heating device is integrated in the air inlet pipe section and is arranged at intervals along the axial extension direction of the air inlet pipe section.

[0025] As can be seen from the above, the present application provides a drying duct structure and a washing and drying integrated machine of a washing and drying integrated machine. The drying duct structure effectively prevents water flow from directly impacting the drying port and the inside of the drying duct assembly through the annular step of the check ring, reduces the direct scouring of the water flow on the drying port, and further reduces the corrosion of the drying duct assembly by detergent residues, thereby ensuring the long-term stable operation of the drying duct system and extending the service life of the drying duct system. In addition, it also avoids the loosening or damage of the drying duct assembly caused by water flow impact, reduces the frequency of maintenance and replacement, and brings a more convenient and efficient washing and drying experience to users. The washing and drying integrated machine significantly improves the drying efficiency, shortens the drying time, and saves household space through the optimized design of the drying air duct system and the integrated design. The optimized drying air duct system enables hot air to be more evenly distributed on the clothes, improves the drying efficiency, and reduces energy consumption. Description of the Drawings

[0026] The drawings here are incorporated into the specification and constitute a part of this specification, showing the embodiments in line with the implementation of the present invention, and are used together with the specification to explain the principles of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the implementation of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of the drying duct structure of the washing and drying integrated machine shown in the embodiment of the present application;

[0028] Figure 2 It is an internal structural diagram of the drying duct structure of the washing and drying integrated machine shown in the embodiment of the present application;

[0029] Figure 3 It is a schematic cross-sectional structure diagram of the drying duct structure of the washing and drying integrated machine shown in the embodiment of the present application.

[0030] Explanation of the Reference Numerals in the Drawings:

[0031] 100 - Drying duct assembly; 200 - Water storage cylinder; 300 - Drying port; 310 - Check ring; 311 - Annular step; 312 - Flow guiding surface. Detailed Embodiments

[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The features, structures, or characteristics described may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present disclosure.

[0033] In an all-in-one washing and drying machine, the drying duct structure is generally formed by directly connecting an opening on the wall surface of the water storage drum to an external air duct. The inlet of the drying duct is located outside the rotating area of the inner drum, and its opening plane is perpendicular to the axis of the inner drum, and no physical barrier structure is provided. When the inner drum rotates at a high speed, centrifugal force causes the washing liquid to carry the undissolved powdered detergent to move tangentially along the drum wall. Since the inlet of the drying duct is within the range of the water flow movement track on the drum wall, the high-speed water flow directly impacts the edge of the drying duct opening, and part of the liquid flow enters the interior of the drying duct due to inertia.

[0034] Due to the lack of a diversion design in the inlet area, the water flow forms a turbulent flow after impact, resulting in the deposition of powdered particles at the air duct inlet. At the same time, the traditional drying duct inlet adopts a straight cylinder structure, and its inner wall smoothly transitions with the inner cavity of the water storage drum, unable to form an effective water flow blocking mechanism, and the detergent particles continuously penetrate into the inner space of the drying duct along with the dynamic pressure of the water flow. This structural defect makes the amount of detergent entering positively correlated with the rotation speed of the inner drum, especially more significant during the high-speed rotation in the dehydration stage.

[0035] To solve the above problems, in a first aspect of the embodiments of the present application, a drying duct structure of an all-in-one washing and drying machine is provided. Referring to Figures 1 - 3 as shown, it includes: a drying duct assembly 100, a water storage drum 200, a drying duct opening 300, and a check ring 310; the drying duct opening 300 is provided on the water storage drum 200, and the drying duct assembly 100 is communicated with the water storage drum 200 through the drying duct opening 300; the check ring 310 is disposed around the outer peripheral side of the drying duct opening 300, and the check ring 310 includes: an annular step 311, and the annular step 311 continuously extends along the radial direction of the drying duct opening 300; the inner diameter of the drying duct opening 300 is less than or equal to the inner diameter of the check ring 310.

[0036] Specifically, the check ring 310 of the drying duct inlet is disposed around the outer peripheral side of the drying duct opening 300. As a part of the water storage drum 200, it is directly connected to the drying duct opening 300. And the check ring 310 structure is located on the side wall of the water storage drum 200, adjacent to the inlet of the drying duct opening 300, forming an annular barrier to partially isolate the drying duct opening 300 from the inner cavity of the water storage drum 200.

[0037] The check ring 310 includes an extended annular step 311, and the annular step 311 can prevent powdered detergent from being thrown into the drying duct opening 300 and the internal area during the washing process. When the washing machine is running, due to the rotation of the inner drum, a strong water flow and centrifugal force will be generated, which can easily throw the powdered detergent towards the drying duct opening 300. The setting of the annular step 311 can effectively block these thrown-up detergents and prevent them from entering the drying duct opening 300 and the inside of the drying duct assembly 100.

[0038] During the washing process of the washing machine, the detergent particles will move with the change of the dynamic pressure of the water flow. The straight-tube structure of the traditional drying duct inlet cannot effectively block the infiltration of these particles, while the annular step 311 forms an effective water flow blocking mechanism through its protruding structure. When the water flow carrying the detergent particles impacts the annular step 311, the particles will be blocked by the annular step 311 and decelerated or change direction, thereby reducing the possibility of them entering the drying duct.

[0039] In this embodiment, the inner diameter of the check ring 310 matches the inner peripheral diameter of the drying duct opening 300. This design ensures that while the check ring 310 effectively blocks the detergent, it does not affect the normal ventilation function of the drying duct opening 300. In addition, the adoption of the check ring 310 also helps to reduce the pollution and damage inside the washing machine, prevent blockage and odor problems caused by the accumulation of detergent in the drying duct, and thus extends the service life of the washing machine.

[0040] Therefore, the structural design of the check ring 310 and its annular step 311 not only solves the problem of detergent entering the drying duct, but also improves the controllability of the washing process. By ensuring that the detergent fully plays its role during the washing process, it helps to improve the washing effect, while maintaining the cleanliness and hygiene of the internal environment of the washing machine. In addition, the structural design of the check ring 310 is simple and reliable, easy to implement. As a part of the water storage tub 200, it is directly connected to the drying duct opening 300 without adding additional complex components, thereby reducing the production cost and maintenance difficulty.

[0041] In some embodiments of the present application, the check ring 310 is integrally injection-molded with the water storage tub 200 to form an integral structure. Specifically, during the manufacturing process of the water storage tub 200, the check ring 310 and the side wall of the water storage tub 200 are integrally formed by an injection molding process to ensure the tight connection and overall stability between the two.

[0042] The main function of integral injection molding is to enhance the structural strength and improve the production efficiency. Through integral injection molding, it can be ensured that the connection between the check ring 310 and the water storage tub 200 is firm and reliable, and it is not easy to appear the phenomenon of falling off or loosening. At the same time, it can also simplify the production process and reduce the manufacturing cost.

[0043] Traditional connection methods may adopt processes such as welding and riveting. These processes are complex and costly. The one-piece injection molding process can complete the manufacturing and connection of both at one time, greatly simplifying the production process. The one-piece injection molding process can reduce material waste and labor costs, thus reducing the manufacturing cost. At the same time, due to the efficient and precise characteristics of this process, it can also improve production efficiency and further reduce the production cost.

[0044] In this embodiment, the check valve ring 310 and the side wall of the water storage cylinder 200 are integrally formed by an injection molding process, ensuring the tight connection and overall stability between the two. This connection method is not only firm and reliable, but also can avoid the loosening or falling off phenomena that may occur in traditional connection methods. It can also achieve a seamless connection between the check valve ring 310 and the water storage cylinder 200, avoiding problems such as detergent penetration or hot air leakage caused by connection gaps.

[0045] In some embodiments of the present application, the top surface of the annular step 311 is parallel to the inner wall of the water storage cylinder 200, so that a smooth and stable contact surface is formed between the top surface of the annular step 311 and the inner wall of the water storage cylinder 200, reducing the disturbance of the air flow. The bottom edge of the annular step 311 is smoothly transitioned with the inner wall of the air drying port 300, avoiding sharp corners and ensuring the smooth flow of the air flow.

[0046] It can be understood that the structure in which the annular step 311 is smoothly transitioned with the air drying port 300 not only intuitively ensures the smoothness of the air flow, reduces unnecessary resistance, but also can effectively reduce the energy loss of the air flow when passing through the air drying port 300. During the drying process, hot air, as the main energy carrier, needs to enter the water storage cylinder 200 through the air drying port 300 to dry the clothes. The smooth transition structure design makes the flow of hot air in the area of the air drying port 300 smoother, avoiding the air flow disorder and resistance increase caused by structural mutation, thus optimizing the air flow path.

[0047] Conventional right-angle or bevel-angle structures are likely to cause mutations in the air flow in the area of the air drying port 300. This kind of mutation will not only increase the resistance and reduce the drying efficiency, but also make the distribution of hot air on the surface of the clothes uneven, affecting the drying effect. The design of the smooth transition between the annular step 311 and the air drying port 300 effectively solves this problem and improves the drying efficiency and drying effect.

[0048] The smooth transition structure between the annular step 311 and the air drying port 300 provided in this embodiment not only optimizes the air flow path, reduces the resistance, improves the drying efficiency, and avoids the air flow disorder and energy loss caused by structural mutation. It not only improves the performance of the product, but also reduces the energy consumption of the product, having good applicability.

[0049] In some embodiments of the present application, the inlet end of the air inlet duct of the drying tunnel assembly 100 is coaxially arranged with the central axis of the drying tunnel opening 300, and the edge of the inlet end of the air inlet duct is in contact with the bottom edge of the annular step 311, ensuring that the hot air can directly and evenly enter the water storage cylinder 200.

[0050] In this embodiment, by coaxially arranging the inlet end of the air inlet duct with the drying tunnel opening 300, the hot air can be evenly distributed when entering the water storage cylinder 200, avoiding local overheating or overcooling phenomena, thereby improving the drying effect. It solves the problem of poor drying effect caused by uneven hot air distribution in the traditional design. In addition, this coaxial design also helps to reduce the risk of detergent particles entering the drying tunnel inlet along with the water flow impact. Because when the inlet end of the air inlet duct is coaxially arranged with the drying tunnel opening 300, the structure of the drying tunnel opening is more compact, reducing the space for detergent particles to enter the drying tunnel inlet, and there will be no spaces such as cracks or gaps that are likely to hide detergent particles, thus effectively preventing the accumulation of detergent particles and ensuring the smooth progress of the drying process.

[0051] This embodiment is beneficial to improving the utilization rate of hot air. By ensuring that the hot air evenly enters the water storage cylinder 200, the hot air can act more fully on the clothes, improving the utilization rate of hot air, enhancing the drying effect, and shortening the drying time. At the same time, since the hiding and accumulation of detergent particles are avoided, problems such as poor drying effect and equipment damage caused by the residue of detergent particles are also avoided, further improving the overall performance and reliability of the drying equipment.

[0052] In some embodiments of the present application, there is a smooth transition area between the bottom edge of the annular step 311 and the inner wall of the drying tunnel opening 300, and a sealing ring is embedded in this area. The top width of the sealing ring is smaller than its bottom width, and its material is silicone rubber. Specifically, the sealing ring is configured in the connection area between the annular step 311 and the inner wall of the drying tunnel opening 300 to fill the tiny gaps that may exist between the two after long-term use, further ensuring the sealing performance.

[0053] Due to the small size and certain adhesiveness of the detergent particles, they are easily attached between the drying tunnel opening 300 and the annular step 311. After a long time, there is a possibility of invading the interior of the drying tunnel through the tiny gaps caused by wear, posing a potential threat to the equipment inside the drying tunnel. The sealing ring can prevent the drying tunnel opening 300 from being worn, and even if there are damaged gaps, the sealing ring can effectively block these detergent particles from invading the tiny gaps between the drying tunnel opening 300 and the annular step 311. The silicone rubber sealing ring has excellent elasticity and wear resistance, and can closely fit between the drying tunnel opening 300 and the annular step 311 to form a barrier.

[0054] Furthermore, in this embodiment, the design of the sealing ring not only considers its sealing performance in the smooth transition area between the bottom edge of the annular step 311 and the inner wall of the drying port 300, but also takes into account the structural stability and durability. The smooth transition design reduces the turbulence and eddy currents of the air flow at the drying port 300, reduces energy loss, and improves the working efficiency of the drying channel. In addition, it simplifies the installation and replacement process of the sealing ring and reduces the maintenance cost. The design with the top width of the sealing ring smaller than the bottom width enables the sealing ring to better adapt to and fit the shape of the inner wall of the drying port 300 during installation, improving the installation convenience and the stability of the sealing performance. Further analysis shows that this structure also has the function of preventing heat loss inside the drying channel. Due to the tight sealing of the sealing ring, the heat inside the drying channel is not easily lost to the external environment through the gap, thus improving the thermal efficiency of the drying channel. At the same time, the sealing ring helps to reduce the noise and vibration inside the drying channel.

[0055] In some embodiments of the present application, the radius of curvature of the diversion surface 312 changes with the circumferential position, and the radius of curvature of the diversion surface 312 near the bottom of the drying port 300 is greater than that at the top.

[0056] The radius of curvature of the diversion surface 312 changes with the circumferential position, which can optimize the water flow direction and reduce detergent residue. By adjusting the radius of curvature at different circumferential positions, the diversion surface 312 can better adapt to the change of the water flow direction and guide the water flow along its surface, thus avoiding the accumulation of detergent at the drying port 300. This not only improves the washing efficiency but also ensures the cleanliness of the drying port 300.

[0057] Specifically, the radius of curvature of the diversion surface 312 near the bottom of the drying port 300 is greater than that at the top, enabling the water flow in the bottom area to flow more smoothly through the drying port 300 area, effectively reducing the water flow blockage caused by too small a radius of curvature. At the same time, the smaller radius of curvature in the top area can form a more significant diversion effect, further guiding the water flow along the diversion surface 312 and thus avoiding the retention of water flow and the accumulation of detergent in the top area of the drying port 300.

[0058] In this embodiment, the radius of curvature structure of the diversion surface 312 not only improves the smoothness of the water flow through the drying port by precisely adjusting the radius of curvature, but also significantly enhances the diversion effect, ensuring the efficiency and cleanliness during the washing process.

[0059] In some embodiments of the present application, the water storage cylinder 200 is provided with a water collecting tank below the drying port 300, and the bottom of the water collecting tank is provided with a drain hole, and the axis of the drain hole has an angle with the vertical direction.

[0060] During the washing process, a small amount of detergent may be flung towards the area of the drying opening 300. The setting of the water collecting trough can collect this residual detergent, preventing it from entering the interior of the drying channel, thus avoiding drying channel blockage and the generation of odors. The water collecting trough is located at the bottom of the water holding cylinder 200, immediately below the drying opening 300. When the residual detergent flows to the area of the drying opening 300, it will flow down along the inner wall of the water holding cylinder 200 and finally be collected by the water collecting trough.

[0061] The bottom of the water collecting trough is provided with a drain hole for discharging the collected residual detergent to the outside of the washing machine. The axis of the drain hole has an angle with the vertical direction. This design can prevent the drain hole from being blocked and ensure that the residual detergent can be discharged smoothly.

[0062] In this embodiment, through the water collecting trough, the entry of residual detergent into the drying channel is further prevented, which can ensure the normal operation and service life of the washing machine and improve the performance of the washing machine. At the same time, the design of the water collecting trough makes the collection and discharge of residual detergent more convenient, facilitating cleaning and maintenance by the user.

[0063] Another aspect of the embodiment of the present application provides a washer-dryer, including the drying channel structure of any one of the washer-dryers in the above embodiments. The washer-dryer further includes: an inner drum and a drying air duct system.

[0064] Among them, the inner drum is rotatably arranged in the water holding cylinder 200, and the rotation axis of the inner drum coincides with the central axis of the water holding cylinder 200. This design ensures the stability of the inner drum during rotation. The extending direction of the guiding surface 312 of the check ring 310 forms a reverse angle with the rotation direction of the inner drum, which can effectively block the entry of detergent particles into the drying channel entrance, thus avoiding the influence of detergent residue on the drying effect. It will not affect the normal ventilation and drying efficiency of the drying opening, and is also easy to clean and maintain. It effectively avoids the influence of detergent residue on the drying effect and ensures the drying quality of the clothes; at the same time, it also reduces the corrosion and damage of the detergent to the drying channel system and extends the service life of the washer-dryer.

[0065] The structure of the reverse angle can also effectively prevent the reverse flow of hot air in the drying channel and improve the drying efficiency. The drying air duct system is connected to the water holding cylinder 200 through the drying opening 300 to form a hot air circulation loop, realizing the recycling of hot air.

[0066] The function of the inner drum is to hold clothes and perform washing operations. Its rotatable design enables the clothes to be fully kneaded and flushed during the washing process, improving the washing effect. At the same time, the rotation axis of the inner drum coincides with the central axis of the water holding cylinder. This design can ensure the stability of the inner drum during rotation and avoid problems such as clothes entanglement and uneven washing caused by unstable rotation.

[0067] The main structural function of the drying air duct system is to provide the hot air required for drying, and it is connected to the water cylinder 200 through the drying air duct opening 300 to form a hot air circulation loop for drying clothes. After the hot air is heated in the drying air duct system, it is evenly blown into the water cylinder 200 through the drying air duct opening 300 to dry the clothes. The dried wet air is then discharged outside the washing machine through the drying air duct system to form a hot air circulation, ensuring the high efficiency and uniformity of the drying effect.

[0068] The inner cylinder is rotatably arranged in the water cylinder 200, and the design that the rotation axis of the inner cylinder coincides with the central axis of the water cylinder 200 solves the possible instability problem during the rotation of the inner cylinder. At the same time, it enables the clothes to be fully unfolded and evenly heated during the washing and drying processes, avoiding the problem of poor washing and drying effects caused by clothes tangling or uneven heating.

[0069] The design that the drying air duct system is connected to the water cylinder 200 through the drying air duct opening 300 to form a hot air circulation loop realizes the recycling of hot air and improves the drying efficiency. At the same time, the design of the hot air circulation loop also enables the hot air during the drying process to be evenly distributed in the water cylinder 200 to dry the clothes evenly, avoiding the problem of poor clothes drying effect caused by uneven hot air distribution. This design not only improves the drying efficiency but also saves energy and reduces the use cost.

[0070] In summary, the washing and drying integrated machine provided by the embodiments of the present application solves the technical problems in the prior art such as poor washing and drying effects, energy waste, and detergent particles entering the drying duct entrance by optimizing the structural design of the inner cylinder and the drying air duct system and adding a detergent isolation device. It improves the washing and drying efficiency, ensures the washing and drying quality of the clothes; saves energy and reduces the use cost; at the same time, it also makes the structure of the washing and drying integrated machine more reasonable and stable, improving the overall performance and user experience.

[0071] In some embodiments of the present application, the drying air duct system includes: an air inlet pipe section, a centrifugal fan, and a heating device; the air inlet pipe section is coaxially docked with the drying air duct opening 300, and the air inlet pipe section is in interference fit with the check ring 310; the impeller axis of the centrifugal fan is deflected by a preset angle relative to the central axis of the air inlet pipe section; the heating device is integrated in the air inlet pipe section and is arranged at intervals along the axial extension direction of the air inlet pipe section.

[0072] This embodiment optimizes the drying air duct structure. The traditional drying air duct system adopts a split design, which not only occupies a large space but also has low hot air flow efficiency. The integrated design can integrate the air inlet pipe section, the centrifugal fan, and the heating device together to optimize the design of the drying air duct system and improve the hot air flow efficiency.

[0073] Furthermore, it can also ensure the smooth flow of hot air in the drying air duct system, improving the utilization rate of hot air and the drying efficiency. The inlet air duct section is coaxially docked with the drying air outlet 300 to ensure that the hot air can directly and evenly enter the water holding cylinder 200. The centrifugal fan is integrated in the inlet air duct section, and the axis of its impeller is deflected by a preset angle relative to the central axis of the inlet air duct section. This design can make the centrifugal fan generate greater air pressure and air volume when rotating, improving the hot air flow efficiency.

[0074] The heating device is also integrated in the inlet air duct section and is arranged at intervals along the axial extension direction of the inlet air duct section. It can enable the heating device to fully heat the air entering the inlet air duct section to generate the hot air required for drying. Through the design of the drying air duct system including the inlet air duct section, the centrifugal fan and the heating device, the problems of low hot air flow efficiency and low drying efficiency caused by the unreasonable design of the traditional drying air duct system are solved. Thus, the design of the drying air duct system is optimized, and the hot air flow efficiency and the drying efficiency are improved.

[0075] Through the integrated design of this embodiment, it can ensure the smooth flow of hot air in the drying air duct system, improve the utilization rate of hot air and the drying efficiency, and shorten the drying time. It saves space. The integrated design can reduce the floor area of the drying air duct system and save household space.

[0076] Based on the content of the above embodiments, for the drying duct structure of the washing and drying integrated machine provided herein and the washing and drying integrated machine during use, the water flow in the forward and reverse directions generated during the operation of the washing machine. Specifically, when the inner drum of the washing machine rotates, the water flow forms a rotational flow along the inner drum wall surface due to inertia, including both the water flow in the centripetal direction and the water flow in the centrifugal direction. When these water flows encounter the annular step of the check ring, they are physically blocked by the annular step and cannot continue to flow in the original direction, but are forced to change the flow direction and flow away along both sides of the annular step. This design of the annular step effectively prevents the water flow from directly impacting the drying air outlet and the inside of the drying duct assembly, thereby greatly reducing the situation where the water mixed with detergent is brought into the drying air outlet and the inside of the drying duct assembly due to the shaking of the inner drum.

[0077] The drying duct structure of the washer-dryer of the present application and the washer-dryer. The drying duct structure effectively prevents water flow from directly impacting the drying duct opening and the interior of the drying duct assembly through the annular step of the check ring, reducing the direct scouring of the drying duct opening by the water flow, thereby reducing the corrosion of the drying duct assembly caused by detergent residue, and ensuring the long-term stable operation of the drying duct system and extending the service life of the drying duct system. In addition, it also avoids the loosening or damage of the drying duct assembly caused by water flow impact, reduces the frequency of maintenance and replacement, and brings a more convenient and efficient washing and drying experience to users. The washer-dryer significantly improves the drying efficiency, shortens the drying time, and saves household space through optimizing the design of the drying air duct system and the integrated design. The optimized drying air duct system enables the hot air to be more evenly distributed on the clothes, improving the drying efficiency and reducing the energy consumption.

[0078] After considering the specification and the practice disclosed herein, those skilled in the art will readily conceive of other embodiments of the present disclosure. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

Claims

1. The drying duct structure of a washer-dryer, characterized in that Comprising: A drying tunnel assembly (100), a water storage cylinder (200), a drying tunnel opening (300) and a check ring (310); The drying tunnel opening (300) is provided on the water storage cylinder (200), and the drying tunnel assembly (100) is communicated with the water storage cylinder (200) through the drying tunnel opening (300); The check ring (310) is disposed around the outer peripheral side of the drying tunnel opening (300), and the check ring (310) includes: an annular step (311), and the annular step (311) continuously extends along the radial direction of the drying tunnel opening (300); The inner diameter of the drying tunnel opening (300) is less than or equal to the inner diameter of the check ring (310).

2. The drying channel structure of an integrated washing and drying machine according to claim 1, characterized in that, The check ring (310) and the water storage cylinder (200) are integrally injection-molded.

3. The drying channel structure of an integrated washing and drying machine according to claim 1, wherein, One side of the cross-section of the annular step (311) is an indented arc structure; The arc structure forms a diversion surface (312) on the side facing the inner cavity of the water storage cylinder (200), and the depression direction of the diversion surface (312) is consistent with the circumferential direction of the inner cavity of the water storage cylinder (200).

4. The drying duct structure of a washing and drying integrated machine according to claim 1, characterized in that The top surface of the annular step (311) is parallel to the inner wall of the water storage cylinder (200), and the bottom edge of the annular step (311) is smoothly transitioned with the inner wall of the drying tunnel opening (300).

5. The drying channel structure of a washing and drying integrated machine according to claim 4, characterized in that, The inlet end of the air inlet duct of the drying tunnel assembly (100) is coaxially arranged with the central axis of the drying tunnel opening (300), and the edge of the inlet end of the air inlet duct is in contact with the bottom edge of the annular step (311).

6. The drying duct structure of an integrated washer-dryer according to claim 5, characterized in that, A sealing ring is embedded at the position where the bottom edge of the annular step (311) is smoothly transitioned with the inner wall of the drying tunnel opening (300). The top width of the sealing ring is less than the bottom width, and the material of the sealing ring is silicone rubber.

7. The drying duct structure of an integrated washing and drying machine according to claim 3, characterized in that, The radius of curvature of the diversion surface (312) changes with the circumferential position, and the radius of curvature of the diversion surface (312) near the bottom of the drying tunnel opening (300) is greater than that at the top.

8. The drying channel structure of an integrated washing and drying machine according to claim 1, characterized in that, The water storage cylinder (200) is provided with a water collection tank below the drying tunnel opening (300), and a drain hole is provided at the bottom of the water collection tank. The axis of the drain hole has an angle with the vertical direction.

9. A washing and drying integrated machine, characterized in that, Including the drying tunnel structure of a washing and drying integrated machine according to any one of claims 1-8, the washing and drying integrated machine further includes: an inner drum and a drying air duct system; The inner drum is rotatably disposed in the water storage cylinder (200), and the rotation axis of the inner drum coincides with the central axis of the water storage cylinder (200). The extending direction of the diversion surface (312) of the check ring (310) forms a reverse angle with the rotation direction of the inner drum; The drying air duct system is communicated with the water storage cylinder (200) through the drying tunnel opening (300) to form a hot air circulation loop.

10. The all-in-one washing and drying machine according to claim 9, characterized in that, The drying air duct system includes: an air inlet pipe section, a centrifugal fan and a heating device; The air inlet pipe section is coaxially docked with the drying tunnel opening (300), and the air inlet pipe section is in interference fit with the check ring (310); The axis of the impeller of the centrifugal fan is deflected by a preset angle relative to the central axis of the air inlet pipe section; The heating device is integrated in the air inlet pipe section and is arranged at intervals along the axial extension direction of the air inlet pipe section.

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