Drying device, base and intelligent closestool adopting instant drying vortex air duct design

Abstract

The utility model discloses a drying device, base and intelligent closestool adopting instantaneous dry vortex flow air duct design, and the drying device adopting instantaneous dry vortex flow air duct design includes: casing, the casing is equipped with the air inlet, the air inlet flow channel, the air outlet flow channel and the air outlet that communicate in proper order, the cross section of air outlet flow channel is S type setting, and the position of air outlet is lower than the air inlet end of air outlet flow channel, and the top wall and bottom wall of air outlet flow channel are streamline type setting to make the airflow along air outlet flow channel and form vortex flow to the air outlet, fan, fan is installed in the air inlet flow channel, and the air inlet side of fan communicates with air inlet, and the air outlet side of fan communicates with air outlet flow channel. The utility model discloses a drying device, makes airflow form stable vortex, optimizes airflow path and has promoted the evenness of flow velocity, thereby efficiently takes away moisture, has improved airflow organization efficiency, reduced airflow stagnation area, accelerated moisture evaporation process, shortened drying time, effectively improved user comfort degree and the advantage of sanitary safety.

Description

Technical Field

[0001] This utility model relates to the field of smart toilet technology, and in particular to a drying device, base and smart toilet that adopts an instant-drying vortex air duct design. Background Technology

[0002] Toilets are a very common bathroom fixture in modern life. In recent years, with the continuous improvement of living standards, smart toilets have also become increasingly popular. As one of the most frequently used products in daily life, the convenience, comfort, and health benefits of smart toilets have attracted more and more attention from users. Smart toilets are generally equipped with a washing device and a drying device. After using the toilet, the washing device can clean the user's private parts, and the drying device can dry them, thus allowing people to fully enjoy convenience and comfort. However, the drying function of existing smart toilets generally suffers from the prominent problem of excessively long drying time, which seriously affects the smoothness and satisfaction of the user experience. Utility Model Content

[0003] The main purpose of this invention is to propose a drying device with an instant-drying vortex air duct design, which aims to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the drying device with an instant-drying vortex air duct design proposed in this utility model includes: a shell, wherein the shell is provided with an air inlet, an air inlet channel, an air outlet channel, and an air outlet connected in sequence; the air outlet channel has an S-shaped cross-section; the air outlet is positioned lower than the air inlet end of the air outlet channel; and the top and bottom walls of the air outlet channel are streamlined to form a vortex in the airflow flowing out of the air outlet channel; and a fan, wherein the fan is installed in the air inlet channel, the air inlet side of the fan is connected to the air inlet, and the air outlet side of the fan is connected to the air outlet channel.

[0005] Optionally, the cross-sectional width of the air outlet channel decreases from the end furthest from the air outlet toward the end closest to the air outlet.

[0006] Optionally, the top and bottom walls of the air outlet duct are both S-shaped in cross-section.

[0007] Optionally, the vertical distance between the two ends of the top wall of the air outlet duct is h1, and the vertical distance between the two ends of the bottom wall of the air outlet duct is h2, where h1 is greater than h2.

[0008] Optionally, the inner wall of the air outlet channel is provided with a guide fin at one end near the air outlet, and the guide fin is used to guide the airflow passing through the air outlet in a preset direction.

[0009] Optionally, the drying device further includes an airflow heater installed between the air inlet channel and the air outlet channel to heat the airflow flowing towards the air outlet channel.

[0010] Optionally, the bottom wall of the air outlet duct includes a slope section and a diversion section. The diversion section connects the bottom end of the slope section and the air outlet. A water leakage hole is provided at the connection between the diversion section and the slope section. The end of the diversion section near the slope section is lower than the end near the air outlet, so that water droplets splashed into the air outlet can flow along the diversion section to the water leakage hole.

[0011] This utility model also proposes a base for a smart toilet, including a shell and a drying device with an instant-drying vortex air duct design as described above. The drying device is installed inside the shell, and the shell has a drying opening that is connected to the air outlet of the drying device.

[0012] Optionally, the base of the smart toilet further includes a connecting shaft and a flip cover. The connecting shaft is installed at the drying port, and the flip cover includes a cover plate and a connecting lug. The cover plate is installed on the outside of the drying port, and the connecting lug is connected to the side of the cover plate facing the drying port and close to the top side of the cover plate. The connecting lug and the connecting shaft are rotatably engaged so that when the drying device blows air toward the drying port, the cover plate can open the drying port around the connecting shaft under the action of the airflow.

[0013] This utility model also proposes a smart toilet, including a toilet body and a base as described above.

[0014] The drying device of this utility model adopts an instant-drying vortex air duct design, which makes the airflow form a stable vortex, optimizes the airflow path and improves the uniformity of flow velocity, thereby efficiently removing moisture. It has the advantages of improving airflow organization efficiency, reducing airflow stagnation areas, accelerating the moisture evaporation process, shortening drying time, and effectively improving user comfort and hygiene safety. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the drying device of this utility model that adopts the design of an instant-drying vortex air duct; Figure 2This is a cross-sectional schematic diagram of the drying device of this utility model that adopts the design of an instant-drying vortex air duct; Figure 3 This is a schematic diagram of another embodiment of the drying device of this utility model that adopts the design of an instant-drying vortex air duct.

[0017] Explanation of icon numbers: The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] This utility model proposes a drying device using an instant-drying vortex air duct design.

[0022] In the embodiments of this utility model, such as Figure 1 and Figure 2As shown, the drying device with an instant-drying vortex air duct design includes: a housing 10, wherein the housing 10 is provided with an air inlet 11, an air inlet channel 12, an air outlet channel 13 and an air outlet 14 connected in sequence. The air outlet channel 13 has an S-shaped cross-section. The air outlet 14 is positioned lower than the air inlet end of the air outlet channel 13, and the top wall 131 and bottom wall 132 of the air outlet channel 13 are streamlined to form a vortex in the airflow flowing out of the air outlet 14 along the air outlet channel 13; and a fan 20, wherein the fan 20 is installed in the air inlet channel 12, the air inlet side of the fan 20 is connected to the air inlet 11, and the air outlet side of the fan 20 is connected to the air outlet channel 13.

[0023] In this embodiment, the position of the air outlet 14 being lower than the air inlet end of the air outlet channel 13 refers to guiding the airflow direction through the height difference design of the internal structure of the housing 10. This can be achieved by adopting an inclined layout of the base of the housing 10 or a structure in which the air inlet end of the air outlet channel 13 is partially raised. For example, the air inlet end of the air outlet channel 13 is set in the upper region of the housing 10 while the air outlet 14 is positioned in the lower region of the housing 10. Alternatively, a stepped transition platform can be added inside the air outlet channel 13. The main purpose is to form a natural downward pressure gradient during the airflow process, thereby promoting the convergence of airflow in the outlet region.

[0024] The streamlined design of the top wall 131 and bottom wall 132 of the air outlet duct 13 refers to the use of a continuous and smooth geometric shape for the wall profile to reduce airflow resistance. This can be achieved by CNC milling to create a parabolic or elliptical cross-section profile, for example, by injection molding an arc-shaped wall with a constant radius of curvature, or by using laser cutting technology to create a hyperbolic transition wall structure. The main purpose is to prevent airflow separation and maintain flow stability. Therefore, this application, through the height difference between the air outlet 14 and the air inlet of the air outlet duct 13, combined with the streamlined wall design, forces the airflow to form a vortex during its outflow. The rotational motion of the vortex enhances the contact efficiency between the airflow and the surface to be dried, thereby effectively shortening the drying time. This design avoids the problems of airflow dispersion and energy dissipation in traditional air ducts. The airflow is uniformly accelerated and concentrated within the duct, thus improving the uniformity and response speed of the drying process.

[0025] The fan 20 is installed in the air inlet channel 12 and guides the airflow stably into the air outlet channel 13 through the connecting structure. The air inlet side of the fan 20 is directly connected to the air inlet 11 to ensure efficient intake of external air, and the air outlet side of the fan 20 is connected to the air outlet channel 13 to realize the directional transmission of airflow. This works in conjunction with the geometric features of the air duct to make the vortex formation process more reliable.

[0026] External air enters the housing 10 through the air inlet 11 and is then guided to the fan 20 via the air inlet channel 12. The fan 20 is installed in the air inlet channel 12, with its inlet side connected to the air inlet 11 and its outlet side connected to the outlet channel 13, thereby pressurizing the airflow and delivering it to the outlet channel 13. The air inlet end of the outlet channel 13 is positioned higher than the air outlet 14; this height difference design causes the airflow to naturally flow downwards within the outlet channel 13. The top wall 131 and bottom wall 132 of the outlet channel 13 both adopt streamlined contours, effectively reducing resistance and turbulence interference during airflow transmission, allowing the airflow to accelerate smoothly and form a stable vortex structure. The rotational motion of this vortex significantly enhances the uniformity and intensity of the airflow's coverage of the target area, thereby improving the efficiency of moisture evaporation.

[0027] The fan 20 can be specifically a centrifugal fan driven by a DC brushless motor, capable of providing continuous and stable airflow output under low noise conditions. The housing 10 can be made of heat-resistant engineering plastics to ensure structural stability and durability during long-term operation.

[0028] Through the synergistic combination of the aforementioned air duct geometry and airflow dynamics characteristics, the airflow efficiently forms a vortex in the air outlet duct 13, which greatly improves the uniformity and response speed of the drying process, effectively solves the problem of excessively long drying time for smart toilets, and thus improves the smoothness and satisfaction of the user experience.

[0029] For example, such as Figure 2 As shown, the cross-sectional width of the air outlet duct 13 decreases from the end furthest from the air outlet 14 toward the end closest to the air outlet 14.

[0030] The decreasing cross-sectional width of the air outlet duct 13 refers to the structural design in which the width of the airflow channel gradually decreases along the direction of airflow. This can be achieved by linear decreasing, exponential decreasing, or segmented decreasing, with the aim of effectively increasing the airflow velocity by compressing the airflow path, thereby enhancing the vortex intensity.

[0031] By designing a gradually decreasing cross-sectional width of the air outlet duct 13, based on the principle of fluid continuity, the airflow is naturally compressed as it flows through the duct, with the velocity increasing as the width decreases. The airflow reaches its maximum velocity in the critical area near the air outlet 14, forming a high-intensity vortex. The rotational motion of this vortex effectively disturbs the air boundary layer, enhancing heat exchange between the hot air and the surface to be dried, and accelerating moisture evaporation. The gradual decrease in width ensures a smooth and continuous airflow acceleration process, reducing turbulence losses and guaranteeing the stability and concentration of the vortex.

[0032] For example, such as Figure 2 As shown, the cross-sections of the top wall 131 and bottom wall 132 of the air outlet duct 13 are both S-shaped.

[0033] The S-shaped configuration refers to a curved shape in which the cross-sectional profiles of the top and bottom walls are continuously curved in opposite directions. It can be achieved by CNC machining or injection molding technology, for example, by designing smooth transition surfaces with different combinations of curvature radii or by using symmetrical / asymmetrical S-shaped geometric configurations. Its purpose is to provide a gradual airflow turning path, avoid sudden changes in airflow velocity within the flow channel, thereby reducing energy dissipation and maintaining vortex stability.

[0034] By cooperating with the S-shaped top wall 131 and bottom wall 132 and the decreasing cross-sectional width structure of the air outlet duct 13, the accelerated airflow smoothly changes direction as it flows through the air outlet duct 13, following the continuous curvature change of the S-shaped surface. This avoids airflow separation caused by right angles or sharp turns. The geometric characteristics of the S-shaped profile guide the airflow to naturally form a stable and concentrated vortex, ensuring that the hot air energy is evenly distributed and efficiently applied to the target area, thereby enhancing the instantaneous drying effect.

[0035] The top wall 131 of the air outlet duct 13 adopts a symmetrical S-shaped curved surface design. The curved surface is composed of an upper convex arc segment and a lower concave arc segment that are smoothly connected. The transition area of ​​the arc segment is treated with a gradual curvature, so that the airflow continuously turns along the curved surface contour in the duct and avoids the generation of local turbulence.

[0036] The above solution effectively solves the problem of vortex instability caused by sudden changes in airflow path, concentrates hot air energy on the area to be dried, significantly shortens the drying time, and improves the smoothness and comfort of the user experience.

[0037] For example, such as Figure 2 As shown, the vertical distance between the two ends of the top wall 131 of the air outlet duct 13 is h1, and the vertical distance between the two ends of the bottom wall 132 of the air outlet duct 13 is h2, where h1 is greater than h2.

[0038] The vertical distance h1 between the two ends of the top wall 131 of the air outlet duct 13 refers to the distance between the two ends of the top wall in the vertical direction. It can be achieved by adjusting the curvature parameters of the top wall based on the geometry of the S-shaped duct. For example, an S-shaped curve design with different radii of curvature can be used. The purpose is to extend the flow path of the airflow at the top and promote the airflow to extend and accumulate energy more fully during the rotation process.

[0039] The vertical distance h2 between the two ends of the bottom wall 132 of the air outlet duct 13 refers to the vertical distance between the two ends of the bottom wall. It can be achieved by using an S-shaped curve structure with a smaller vertical distance, for example, by optimizing the curvature of the bottom wall to shorten the flow path. The purpose is to maintain the high velocity and concentration of the airflow at the bottom and avoid energy dissipation due to an excessively long path. The relationship that h1 is greater than h2 can be understood as an asymmetrical setting of the vertical distance between the top wall 131 and the bottom wall 132. It can be parametrically designed through the overall geometric constraints of the flow channel. The purpose is to construct a gradient pressure distribution inside the flow channel, providing the necessary dynamic basis for vortex formation.

[0040] By differentiating the vertical spacing between the top wall 131 and the bottom wall 132, an asymmetrical geometric structure is formed in the S-shaped flow channel. Because the vertical spacing h1 at both ends of the top wall 131 is relatively large, the airflow at the top travels a longer distance in the S-shaped path, allowing more time for rotation and energy accumulation. The relatively small vertical spacing h2 at both ends of the bottom wall 132 maintains a higher flow velocity and concentration in the bottom airflow, reducing energy loss. The setting of h1 being greater than h2 further results in a gradient change in pressure distribution within the flow channel from the top wall 131 to the bottom wall 132. This gradient effectively guides the airflow to form a high-intensity and persistent vortex structure in the outlet flow channel 13, thereby improving the efficiency of moisture entrainment and evaporation.

[0041] The top wall 131 of the air outlet duct 13 is designed as an S-shaped curve with a large curvature change, which makes the vertical distance between the two ends of the top wall 131 relatively large; the bottom wall 132 is designed as an S-shaped curve with a gentle curvature change, which makes the vertical distance between the two ends of the bottom wall 132 relatively small.

[0042] The above solution effectively optimizes the uniformity of airflow distribution within the air outlet duct 13, enhances the intensity and continuity of the vortex, thereby significantly improving the moisture evaporation efficiency, shortening the drying time, and improving the user's smooth experience during use.

[0043] For example, such as Figure 1 As shown, the inner wall of the air outlet duct 13 is provided with a guide fin 30 at one end near the air outlet 14. The guide fin 30 is used to guide the airflow passing through the air outlet 14 in a preset direction.

[0044] The airflow guide fin 30 refers to a raised structure used to regulate the direction of airflow. It can be made of metal or plastic, such as an arc-shaped plate, a straight plate structure, or an array of multiple small fins. Its purpose is to concentrate and guide the scattered airflow in a preset direction. The airflow guide fin 30 can be set according to ergonomic requirements by adjusting the tilt angle of the airflow guide fin 30. Its purpose is to ensure that the airflow accurately covers the specific parts of the human body that need to be dried.

[0045] By installing guide fins 30 at a key position at the end of the air outlet duct 13, when the airflow is accelerated by the vortex and flows to the air outlet 14, the guide fins 30 apply a directional guiding force to the high-speed airflow, causing it to flow along a preset path, thereby effectively suppressing the lateral diffusion of the airflow. Since the air outlet duct 13 has formed a streamlined vortex structure, the guide fins 30 are precisely positioned in the end area where the airflow is about to exit, avoiding the potential danger of disrupting the vortex formation if guide components are installed upstream of the air duct. At the same time, the kinetic energy of the airflow after the vortex acceleration is used to improve the coverage efficiency, achieving precise control of the airflow path and uniform optimization of the drying effect.

[0046] For example, such as Figure 3 As shown, the drying device also includes an airflow heater 40, which is installed between the air inlet channel 12 and the air outlet channel 13 to heat the airflow flowing towards the air outlet channel 13.

[0047] The airflow heater 40 refers to a heat energy conversion device used to improve the heat energy density of the airflow. It can be implemented by using an electric heating wire, a PTC ceramic heating element, or an infrared radiation heater. Its purpose is to provide a stable and controllable heat source to ensure that the airflow reaches a suitable drying temperature range before entering the air outlet duct 13, thereby making up for the deficiency of insufficient heat energy supply in the basic vortex duct design.

[0048] By precisely positioning the airflow heater 40 in the transition area between the inlet airflow channel 12 and the outlet airflow channel 13, the airflow generated by the fan 20 is uniformly heated before flowing into the outlet airflow channel 13. This heating process is organically coordinated with the streamlined top wall 131 and bottom wall 132 structure of the outlet airflow channel 13. As the airflow maintains a stable flow state after heating before entering the outlet airflow channel 13, it forms a high-temperature vortex under the guidance of the streamlined top wall 131 and bottom wall 132. This high-temperature vortex can more fully contact the surface of the area to be dried, enhancing the heat exchange efficiency between hot air and moisture, while avoiding heat loss or airflow disturbance that may occur during the air inlet stage. Thus, the thermal energy utilization efficiency is optimized without changing the basic structure of the airflow channel.

[0049] The airflow heater 40 specifically adopts a PTC ceramic heater, which is configured to be embedded in the cavity between the end of the air inlet channel 12 and the beginning of the air outlet channel 13. The surface of the heater is covered with a thermally conductive metal mesh cover to ensure that the airflow is heated evenly, and its power supply line is connected to the main control unit through the temperature control module to realize dynamic temperature adjustment and ensure constant temperature heating.

[0050] For example, such as Figure 3As shown, the bottom wall 132 of the air outlet duct 13 includes a slope section 133 and a diversion section 134. The diversion section 134 connects the bottom end of the slope section 133 and the air outlet 14. A water leakage hole 135 is provided at the connection between the diversion section 134 and the slope section 133.

[0051] The ramp section 133 refers to the inclined guide section with an angle in the bottom wall 132 of the airflow duct 13. It can be implemented using a smooth inclined surface. The purpose is to use gravity to allow splashed water to flow naturally to the bottom of the ramp, avoiding water stagnation on the plane and interfering with the formation of airflow vortices. The diversion section 134 can be understood as the guide structure connecting the bottom of the ramp section 133 and the air outlet 14. The drain hole 135 is specifically a drainage hole opened at the connection between the diversion section 134 and the ramp section 133. It can be implemented using a circular hole or a slit. The purpose is to allow the collected water to drain in time, preventing water accumulation at the connection point from causing equipment corrosion or airflow blockage.

[0052] The sloped section 133 of the bottom wall 132 of the air outlet duct 13 allows splashed water to flow towards the bottom of the slope under gravity. A drainage hole 135 is provided at the connection between the diversion section 134 and the sloped section 133 to allow the collected water to be discharged in time, thereby preventing water from accumulating on the bottom wall 132, ensuring the stable formation of the airflow vortex, maintaining the efficiency of the drying process and the reliability of the equipment.

[0053] For example, such as Figure 3 As shown, the end of the diversion section 134 near the slope section 133 is lower than the end near the air outlet 14, so that water droplets splashed into the air outlet 14 can flow along the diversion section 134 to the drain hole 135.

[0054] The inclination direction of the guide section 134 refers to the height difference between its two ends. This can be achieved by using a fixed inclination angle or by using an inclination surface formed by a mold. The purpose is to use gravity to naturally guide the flow of water droplets and prevent water droplets from accumulating at the beginning of the guide section 134. The structural design of the guide section 134 can be understood as a guide channel that slopes from the ramp section 133 towards the air outlet 14. Specifically, it can use a straight surface, the purpose of which is to ensure that water droplets flow in a predetermined direction along a preset path and prevent water droplets from remaining on the surface of the guide section 134.

[0055] The end of the drainage section 134 closest to the ramp section 133 is positioned lower, allowing water droplets flowing down from the ramp section 133 and splashing into the air outlet 14 to flow smoothly along the surface of the drainage section 134 to the drain hole 135. This prevents water droplets from accumulating in the drainage section 134 and maintains a dry environment inside the duct. This design, through precise control of the geometry of the drainage section 134, allows water droplets to naturally converge to the drain hole 135 under gravity, preventing water droplets from remaining near the air outlet 14 and ensuring that the drain hole 135 functions as a drainage outlet effectively.

[0056] This utility model also proposes a base for a smart toilet, which includes a shell and a drying device with an instant-drying vortex air duct design. The specific structure of the drying device with the instant-drying vortex air duct design is as described in the above embodiments. Since the base of this smart toilet adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The drying device is installed inside the shell, and the shell has a drying opening that communicates with the air outlet 14 of the drying device.

[0057] Specifically, the base of the smart toilet also includes a connecting shaft and a flip-top. The connecting shaft is installed at the drying opening. The flip-top includes a cover plate and a connecting lug. The cover plate is installed on the outside of the drying opening, and the connecting lug is connected to the side of the cover plate facing the drying opening and near the top edge of the cover plate. The connecting lug and the connecting shaft are rotatably engaged, so that when the drying device blows air towards the drying opening, the cover plate can open the drying opening around the connecting shaft under the action of the airflow. The connecting shaft can be a high-precision stainless steel shaft. After the drying device stops blowing air, the flip-top can flip back to its original position under the action of gravity to automatically close the drying opening, thereby providing a decorative and splash-proof effect for the drying opening.

[0058] This utility model also proposes a smart toilet, which includes a toilet body and a base. The specific structure of the base is as described in the above embodiments. Since this smart toilet adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0059] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A drying device employing an instant-drying vortex air duct design, characterized in that, include: The housing has an air inlet, an air inlet channel, an air outlet channel, and an air outlet connected in sequence. The air outlet channel has an S-shaped cross-section. The air outlet is located lower than the air inlet end of the air outlet channel. The top and bottom walls of the air outlet channel are streamlined so that the airflow flowing out of the air outlet channel forms a vortex. A fan is installed in the air inlet channel, with the air inlet side of the fan connected to the air inlet and the air outlet side of the fan connected to the air outlet channel.

2. The drying device with an instant-drying vortex air duct design as described in claim 1, characterized in that, The cross-sectional width of the air outlet channel decreases from the end furthest from the air outlet toward the end closest to the air outlet.

3. The drying device with an instant-drying vortex air duct design as described in claim 2, characterized in that, The top and bottom walls of the air outlet duct are both S-shaped in cross-section.

4. The drying device with an instant-drying vortex air duct design as described in claim 3, characterized in that, The vertical distance between the two ends of the top wall of the air outlet channel is h1, and the vertical distance between the two ends of the bottom wall of the air outlet channel is h2, where h1 is greater than h2.

5. The drying apparatus employing a rapid-drying vortex air duct design as described in any one of claims 1 to 4, characterized in that, The inner wall of the air outlet channel is provided with a guide fin at one end near the air outlet. The guide fin is used to guide the airflow passing through the air outlet in a preset direction.

6. The drying apparatus employing a rapid-drying vortex air duct design as described in any one of claims 1 to 4, characterized in that, The drying device further includes an airflow heater, which is installed between the air inlet channel and the air outlet channel to heat the airflow flowing towards the air outlet channel.

7. The drying apparatus employing an instant-drying vortex air duct design as described in any one of claims 1 to 4, characterized in that, The bottom wall of the air outlet duct includes a slope section and a diversion section. The diversion section connects the bottom end of the slope section to the air outlet. A water leakage hole is provided at the connection between the diversion section and the slope section. The end of the diversion section near the slope section is lower than the end near the air outlet, so that water droplets splashed into the air outlet can flow along the diversion section to the water leakage hole.

8. A base for a smart toilet, characterized in that, The device includes a housing and a drying device with an instant-drying vortex air duct design as described in any one of claims 1 to 7, wherein the drying device is installed inside the housing, the housing has a drying port, and the drying port is connected to the air outlet of the drying device.

9. The base of the smart toilet as described in claim 8, characterized in that, The base of the smart toilet also includes a connecting shaft and a flip cover. The connecting shaft is installed at the drying port. The flip cover includes a cover plate and a connecting lug. The cover plate is installed on the outside of the drying port. The connecting lug is connected to the side of the cover plate facing the drying port and close to the top side of the cover plate. The connecting lug and the connecting shaft are rotatably engaged so that when the drying device blows air towards the drying port, the cover plate can open the drying port around the connecting shaft under the action of the airflow.

10. A smart toilet, characterized in that, Includes the toilet body and the base of the smart toilet as described in claim 8 or 9.

Images