Cup drying device

Abstract

The application discloses a cup drying device, which comprises a containing groove for placing cups, a side wall of the containing groove is provided with an air inlet hole, an inner wall of the containing groove is provided with an air guide part corresponding to the air inlet hole, and the air guide part is used for guiding hot air to blow obliquely downward to the inside of the containing groove; a drying mechanism comprises a fan and an air duct assembly, the air duct assembly comprises an air duct body and a sealing ring, the air duct body is provided with an air inlet connecting port and an air outlet connecting port, the fan is connected to the air inlet connecting port, and the sealing ring is installed on the air outlet connecting port; the sealing ring abuts against the outer wall of the containing groove around the air inlet hole, so that the drying mechanism can blow hot air into the containing groove. The scheme effectively solves the problems of complex connection structure and poor drying effect in the prior art.

Description

Technical Field

[0001] This application relates to the technical field of cleaning equipment, and more particularly to a cup drying device. Background Technology

[0002] In the smart home and small appliance sectors, teacup cleaning and sterilization devices with integrated cleaning and drying functions have become mainstream products due to their simplified operation and improved ease of use. Some existing teacup cleaning devices typically integrate a drying module. Their core structure includes a drying mechanism (such as a hot air generator and heating element assembly) and a drying chamber to hold the teacups to be dried. The air outlet of the drying mechanism is connected to a pre-installed air inlet on the side of the drying chamber via ducts, ventilation channels, or direct connection. In actual use, the user places the cleaned teacup (usually upside down to drain residual moisture) on the support structure inside the drying chamber. After activating the drying mechanism, the hot airflow generated by the mechanism enters the drying chamber through the air outlet and inlet. The hot airflow evaporates moisture through contact with the surface of the teacup, thus completing the drying process.

[0003] However, the above-mentioned structural design of the existing technology has obvious defects: on the one hand, the connection structure between the drying mechanism and the drying chamber is relatively complex. The air outlet of the drying mechanism and the air inlet on the side of the drying chamber often need to be set with a special guide pipe, seal or fixed bracket, which not only increases the overall assembly difficulty and manufacturing cost of the device; on the other hand, the drying effect is relatively average. Since the hot air enters from only one direction from the side of the drying chamber, the airflow path in the chamber is unidirectional, which easily forms airflow dead corners in the chamber (such as the bottom of the teacup, the inside of the cup mouth, etc.), which makes it impossible for the hot air to make full and uniform contact with the surface of the teacup. The moisture in some areas does not evaporate completely, which prolongs the drying time. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a cup drying device that can solve the above-mentioned problems existing in the related technology.

[0005] To achieve the above objectives, this application adopts the following technical solution: A cup drying device, comprising: A container is provided for holding cups; the side wall of the container is provided with an air inlet, and the inner wall of the container is provided with an air guide corresponding to the air inlet, the air guide being used to guide hot air to blow downwards into the container. The drying mechanism includes a fan and an air duct assembly. The air duct assembly includes an air duct body and a sealing ring. The air duct body is provided with an air inlet and an air outlet. The fan is connected to the air inlet, and the sealing ring is installed at the air outlet. The sealing ring surrounds the air inlet and abuts against the outer wall of the receiving tank, so that the drying mechanism can blow hot air into the receiving tank.

[0006] Optionally, the air guide is integrally formed on the inner wall of the receiving groove.

[0007] Optionally, the air duct body is provided with an inner convex ring that protrudes radially inward at the air outlet connection port, and the outer periphery of the sealing ring is provided with an outer ring groove corresponding to the inner convex ring, and the sealing ring is fitted onto the inner convex ring through the outer ring groove.

[0008] Optionally, the outer ring groove and the inner convex ring are interference-fitted.

[0009] Optionally, along the axial direction of the sealing ring, an outer retaining ring and an inner retaining ring are formed on both sides of the outer annular groove, respectively; The inner retaining ring includes a plurality of support protrusions arranged circumferentially around the sealing ring. The inner retaining ring abuts against the inner convex ring through the support protrusions, so that the outer retaining ring is tightly against the inner convex ring. Alternatively, the outer retaining ring includes a plurality of support protrusions arranged circumferentially around the sealing ring, and the outer retaining ring abuts against the inner convex ring through the support protrusions, so that the inner retaining ring is tightly against the inner convex ring.

[0010] Optionally, the side of the inner retaining ring facing away from the outer ring groove is configured as a guide surface, which guides the inner retaining ring past the inner convex ring during installation.

[0011] Optionally, the outer retaining ring is provided with an annular rib for abutting against the side wall of the receiving groove, and the outer retaining ring is tightly abutting against the outer wall surface of the receiving groove through the annular rib.

[0012] Optionally, the drying mechanism may further include an electric heater; The air duct body includes a first shell and a second shell that are radially split along their own extension direction. The first shell and the second shell are radially fastened together. The first shell has a first fixing recess on the side wall away from the second shell, and the second shell has a second fixing recess on the side wall away from the first shell. The two ends of the electric heater are respectively embedded in the first fixing recess and the second fixing recess, thereby realizing the installation of the electric heater in the air duct body.

[0013] Optionally, the outer side wall of the first housing is provided with a first protrusion, and a first fixing recess is formed on the inner wall of the first housing at the position corresponding to the first protrusion; the outer side wall of the second housing is provided with a second protrusion, and a second fixing recess is formed on the inner wall of the second housing at the position corresponding to the second protrusion. The first convex bulge has a wire hole that connects to the first fixed recess, and the wiring of the electric heater extends out through the wire hole.

[0014] Optionally, the drying mechanism further includes a temperature sensor. The first housing is provided with a temperature measuring hole located on the air outlet side of the heater. The temperature sensor is installed outside the first housing aligned with the temperature measuring hole to detect the temperature inside the air duct assembly.

[0015] The beneficial effects of this application are as follows: The cup drying device provided by this utility model effectively solves the problems of complex connection structure and poor drying effect in the prior art, and has significant technical advantages: On the one hand, by setting a sealing ring at the air outlet of the air duct component, during assembly, it is only necessary to make the sealing ring tightly against the outer wall of the receiving groove and to fix the air duct component and the receiving groove to complete the sealing connection. There is no need for complicated assembly operations, which simplifies the assembly process of the device, reduces the assembly difficulty and manufacturing cost, and at the same time, the sealing effect of the sealing ring avoids the leakage of hot air and improves energy utilization efficiency. On the other hand, by guiding the airflow downwards to the bottom of the receiving groove and then turning upwards, a circulating airflow path is formed, which effectively eliminates the dead corners of airflow in the drying process, so that the hot airflow can make full and uniform contact with the surface of the cup (especially the inner wall and bottom of the cup, which are prone to residual moisture), significantly improving the drying uniformity and avoiding the problem of bacterial growth caused by residual moisture. At the same time, the circulating airflow accelerates the evaporation rate of moisture and shortens the drying time, meeting the user's demand for fast and efficient drying of cups. Attached Figure Description

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the cup drying device described in the embodiments of this application; Figure 2 This is an exploded schematic diagram of the cup drying device described in the embodiments of this application; Figure 3 This is a cross-sectional view of the cup drying device described in the embodiments of this application; Figure 4 for Figure 3 Enlarged view of section A; Figure 5 This is a schematic diagram of the drying mechanism described in the embodiments of this application; Figure 6This is a cross-sectional view of the drying mechanism described in the embodiments of this application; Figure 7 This is a schematic diagram of the sealing ring from one perspective of the embodiment itself; Figure 8 This is a schematic diagram of the sealing ring from another perspective in an embodiment of this application; Figure 9 This is a schematic diagram of the structure of the first housing from an external perspective in an embodiment of this application; Figure 10 This is a structural schematic diagram of the first housing from an inner perspective in an embodiment of this application; Figure 11 This is a structural schematic diagram of the second housing from an external perspective in an embodiment of this application; Figure 12 This is a structural schematic diagram of the second housing from the inside view in an embodiment of this application.

[0018] In the picture: 1. Receiving groove; 11. Air inlet; 12. Air guide; 2. Drying mechanism; 21. Fan; 22. Air duct assembly; 221. Air duct body; 2211. First housing; 22111. First fixing recess; 22112. First convex bulge; 22113. Wire hole; 22114. Temperature measuring hole; 22115. Protruding buckle; 2212. Second housing; 22121. Second fixing recess; 22122. Second convex bulge; 22123. Buckle; 2213. Inner convex ring; 222. Sealing ring; 2221. Outer ring groove; 2222. Inner retaining ring; 2223. Outer retaining ring; 2224. Supporting protrusion; 2225. Annular rib; 23. Electric heater; 24. Temperature sensor. Detailed Implementation

[0019] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the smart home and small appliance sectors, teacup cleaning and sterilization devices with integrated cleaning and drying functions have become mainstream products due to their simplified operation and improved ease of use. Some existing teacup cleaning devices typically integrate a drying module. Their core structure includes a drying mechanism (such as a hot air generator and heating element assembly) and a drying chamber to hold the teacups to be dried. The air outlet of the drying mechanism is connected to a pre-installed air inlet on the side of the drying chamber via ducts, ventilation channels, or direct connection. In actual use, the user places the cleaned teacup (usually upside down to drain residual moisture) on the support structure inside the drying chamber. After activating the drying mechanism, the hot airflow generated by the mechanism enters the drying chamber through the air outlet and inlet. The hot airflow evaporates moisture through contact with the surface of the teacup, thus completing the drying process.

[0023] However, the above-mentioned structural design of the existing technology has obvious defects: on the one hand, the connection structure between the drying mechanism and the drying chamber is relatively complex. The air outlet of the drying mechanism and the air inlet on the side of the drying chamber often need to be set with a special guide pipe, seal or fixed bracket, which not only increases the overall assembly difficulty and manufacturing cost of the device; on the other hand, the drying effect is relatively average. Since the hot air enters from only one direction from the side of the drying chamber, the airflow path in the chamber is unidirectional, which easily forms airflow dead corners in the chamber (such as the bottom of the teacup, the inside of the cup mouth, etc.), which makes it impossible for the hot air to make full and uniform contact with the surface of the teacup. The moisture in some areas does not evaporate completely, which prolongs the drying time.

[0024] To overcome the above technical problems, refer to Figures 1-4 This application provides a cup drying device, comprising: A receiving slot 1 is used to hold cups; the side wall of the receiving slot 1 is provided with an air inlet 11, and the inner wall of the receiving slot 1 is provided with an air guide 12 corresponding to the air inlet 11. The air guide 12 is used to guide hot air to blow downwards into the receiving slot 1. The drying mechanism 2 includes a fan 21 and an air duct assembly 22. The air duct assembly 22 includes an air duct body 221 and a sealing ring 222. The air duct body 221 is provided with an air inlet and an air outlet. The fan 21 is connected to the air inlet, and the sealing ring 222 is installed at the air outlet. The sealing ring 222 surrounds the air inlet 11 and abuts against the outer wall of the receiving groove 1, so that the drying mechanism 2 can blow hot air into the receiving groove 1.

[0025] In the cup drying device of this embodiment, the receiving tank 1 serves as the space for holding and drying cups. An air inlet 11 is provided on its side wall, and an air guide 12 (such as an air guide plate, air guide groove, etc.) is provided on the inner wall corresponding to the position of the air inlet 11. The air guide 12 has a downward inclined guiding structure. A bracket is adapted in the receiving tank 1 to support the cups to be dried (the cups are usually placed upside down on the bracket to facilitate the drainage of water and contact with the airflow).

[0026] The drying mechanism 2 includes a fan 21 and an air duct assembly 22. The air duct assembly 22 consists of an air duct body 221 and a sealing ring 222. The air duct body 221 has an air inlet and an air outlet. The fan 21 is fixedly connected to the air duct body 221 through the air inlet, and the sealing ring 222 is fixedly installed at the end of the air outlet. In the assembled state, the sealing ring 222 is arranged circumferentially around the air inlet 11 of the receiving groove 1 and tightly abuts against the outer wall of the receiving groove 1, realizing a sealed connection between the air duct assembly 22 and the receiving groove 1. At the same time, the air duct assembly 22 is fixed to the receiving groove 1 by simple fixing methods such as bolts and buckles, without the need for a complex connection structure.

[0027] During assembly, simply align the air outlet of the air duct assembly 22 with the air inlet 11 on the side wall of the receiving tank 1, so that the sealing ring 222 installed at the air outlet tightly adheres to the outer wall of the receiving tank 1 and forms a seal around the air inlet 11. Then, use a simple fixing structure (such as snap-fit ​​or bolt tightening) to keep the air duct assembly 22 and the receiving tank 1 relatively fixed, and the assembly of the drying mechanism 2 and the receiving tank 1 can be completed. There is no need to set up additional guide pipes, complex supports or multi-step sealing operations, which simplifies the assembly process.

[0028] In use, the cups to be dried are placed upside down on the bracket in the receiving tank 1. The fan 21 of the drying mechanism 2 is started. The airflow generated by the fan 21 enters the air duct assembly 22 through the air inlet of the air duct body 221, and is then delivered to the receiving tank 1 through the air outlet, sealing ring 222 and air inlet 11. After passing through the air inlet 11, the airflow is guided by the air guide 12 and blown downwards towards the bottom of the receiving tank 1. Then, the airflow forms a baffle at the bottom of the receiving tank 1, flows upwards in the opposite direction and fully covers the cups on the bracket (including the inner wall, outer wall and rim of the cup). Through the full contact between the hot airflow and the surface of the cup, the moisture evaporates quickly. At the same time, the sealed connection structure prevents the hot airflow from leaking, ensuring that all the airflow is used in the drying process and improving energy utilization.

[0029] The cup drying device of this application embodiment effectively solves the problems of complex connection structure and poor drying effect in the prior art, and has significant technical advantages: On the one hand, by setting a sealing ring 222 at the air outlet of the air duct component 22, during assembly, it is only necessary to make the sealing ring 222 tightly adhere to the outer wall of the receiving groove 1 and achieve relative fixation between the air duct component 22 and the receiving groove 1 to complete the sealing connection. There is no need for complicated assembly operations, which simplifies the assembly process of the device, reduces the assembly difficulty and manufacturing cost. At the same time, the sealing effect of the sealing ring 222 prevents the leakage of hot air and improves the energy utilization efficiency. On the other hand, the airflow is guided by the air guide 12 to tilt downward and blow towards the bottom of the receiving groove 1 and then bend upward, forming a circulating airflow path, which effectively eliminates the dead corner of airflow in the drying process, so that the hot airflow can achieve full and uniform contact with the surface of the cup (especially the inner wall and bottom of the cup, which are prone to residual moisture), which significantly improves the drying uniformity and avoids the problem of bacterial growth caused by residual moisture. At the same time, the circulating airflow accelerates the moisture evaporation rate and shortens the drying time, meeting the user's demand for fast and efficient drying of cups.

[0030] In one embodiment, reference is made to Figure 1 and Figure 4 The air guide 12 is integrally formed on the inner wall of the receiving groove 1.

[0031] The air guide section 12 can be integrally formed with the inner wall of the receiving tank 1 through processing techniques such as injection molding, stamping, and casting.

[0032] Since the air guide section 12 and the receiving tank 1 are integrally formed, no additional positioning, fixing, and calibration operations are required for the air guide section 12 during assembly. Only a simple assembly of the drying mechanism 2 and the receiving tank 1 is needed. The integrated structure avoids the problems of positional deviation and insecure fixing that may occur when the air guide section 12 is assembled independently, ensuring that the relative position of the air guide section 12 and the air inlet 11 is always accurate, thus guaranteeing the stability of the air guiding effect.

[0033] In one embodiment, reference is made to Figure 4 The air duct body 221 is provided with an inner convex ring 2213 that protrudes radially inward at the air outlet connection port. The outer periphery of the sealing ring 222 is provided with an outer ring groove 2221 corresponding to the inner convex ring 2213. The sealing ring 222 is fitted onto the inner convex ring 2213 through the outer ring groove 2221.

[0034] On the inner side of the air outlet connection end of the air duct body 221, an annular protrusion (i.e., inner protruding ring 2213) is integrally formed radially inward. The cross-sectional shape of the inner protruding ring 2213 can be rectangular, arc-shaped or trapezoidal. Its inner diameter is precisely matched with the size of the outer ring groove 2221 of the sealing ring 222 to ensure a tight fit after installation. The width (axial dimension) of the inner protruding ring 2213 needs to take into account both connection strength and ease of assembly to avoid assembly difficulties due to excessive width or fixation effect due to excessive narrowness.

[0035] The sealing ring 222 is made of elastic material (such as silicone, fluororubber, etc.). A ring groove (i.e. outer ring groove 2221) is opened around its outer circumference. The width and depth of the outer ring groove 2221 are perfectly matched with the inner convex ring 2213 of the air duct body 221. The edge of the groove can be set as a chamfered structure to facilitate the quick insertion of the inner convex ring 2213.

[0036] During assembly, align the outer ring groove 2221 of the sealing ring 222 with the inner convex ring 2213 of the air outlet connection port of the air duct body 221. By utilizing the deformation characteristics of the elastic material, push the sealing ring 222 axially into the air outlet connection port, so that the inner convex ring 2213 is completely inserted into the outer ring groove 2221. After insertion, the inner convex ring 2213 fits tightly against the side wall of the outer ring groove 2221, forming axial limiting (preventing the sealing ring 222 from falling off) and circumferential fixing (preventing the sealing ring 222 from rotating). Without the need for additional adhesive, screw or other fixing structures, the sealing ring 222 can be stably installed.

[0037] The sealing ring 222 and the air duct body 221 are tightly connected by a snap-fit ​​structure, eliminating the gap between them and preventing hot air from leaking from the connection between the sealing ring 222 and the air duct body 221. At the same time, the elastic properties of the sealing ring 222 allow it to still tightly abut against the outer wall of the receiving groove 1 after snap-fitting. Combined with the axial limiting of the sealing ring 222 by the inner convex ring 2213, the pressure on the sealing surface is ensured to be uniform, which further improves the sealing reliability between the air duct assembly 22 and the receiving groove 1, allowing all hot air to enter the receiving groove 1 through the air inlet 11 and ensuring airflow utilization.

[0038] In one embodiment, the outer ring groove 2221 and the inner convex ring 2213 are interference-fitted.

[0039] The width of the outer ring groove 2221 is slightly smaller than the width of the inner convex ring 2213 (axial interference), which ensures both assembly feasibility and the formation of a stable elastic clamping force. The cross-section of the inner convex ring 2213 is preferably rectangular or trapezoidal (the hypotenuse of the trapezoid facilitates assembly guidance), and the groove wall of the outer ring groove 2221 adopts a shape that matches the cross-section of the inner convex ring 2213 to ensure that the contact surfaces fully fit during interference fit.

[0040] During assembly, the deformation characteristics of the elastic material of the sealing ring 222 are utilized to force the outer ring groove 2221 into the inner convex ring 2213. Since the outer ring groove 2221 is slightly smaller than the inner convex ring 2213, the wall of the outer ring groove 2221 of the sealing ring 222 will elastically contract after being fitted, forming a continuous axial clamping force on the inner convex ring 2213. The two interact to form a tight fit, which not only eliminates the possibility of axial dislodgement and circumferential rotation, but also eliminates the small gaps that may exist in the clamping structure.

[0041] The interference fit eliminates the gap between the sealing ring 222 and the air duct body 221, preventing hot air from leaking from the connection between the two, forming a double seal of physical fitting and elastic compression; on the other hand, the axial force generated by the interference fit will push the sealing end face of the sealing ring 222 to abut more tightly against the outer wall of the receiving groove 1, making the pressure distribution of the sealing surface more uniform, and further improving the sealing reliability between the air duct assembly 22 and the receiving groove 1.

[0042] In one embodiment, reference is made to Figure 7 and Figure 8 Along the axial direction of the sealing ring 222, an outer retaining ring 2223 and an inner retaining ring 2222 are formed on both sides of the outer annular groove 2221, respectively. The inner retaining ring 2222 includes a plurality of support protrusions 2224 arranged circumferentially around the sealing ring 222. The inner retaining ring 2222 abuts against the inner convex ring 2213 through the support protrusions 2224, so that the outer retaining ring 2223 abuts tightly against the inner convex ring 2213. Alternatively, the outer retaining ring 2223 may include a plurality of support protrusions 2224 arranged circumferentially around the sealing ring 222, and the outer retaining ring 2223 abuts against the inner convex ring 2213 through the support protrusions 2224, so that the inner retaining ring 2222 is tightly abutted against the inner convex ring 2213.

[0043] Along the axial direction of the sealing ring 222, an outer retaining ring 2223 and an inner retaining ring 2222 are integrally formed on both sides of the outer ring groove 2221. The outer retaining ring 2223 is located on the side of the sealing ring 222 close to the outer wall of the receiving groove 1, and the inner retaining ring 2222 is located on the side of the sealing ring 222 away from the receiving groove 1. The two form an outer ring groove 2221 for mounting the inner convex ring 2213.

[0044] The support protrusion 2224 adopts a structure integrally injection molded with the sealing ring 222, and is evenly distributed along the circumference of the retaining ring. The shape of the protrusion is preferably rectangular, hemispherical, cylindrical or trapezoidal.

[0045] During assembly, the outer ring groove 2221 of the sealing ring 222 is aligned with the inner convex ring 2213 and pushed in. Due to the interference fit between the outer ring groove 2221 and the inner convex ring 2213, the supporting protrusion 2224 first contacts the side wall of the inner convex ring 2213 and undergoes elastic deformation during the pushing process. As it is continuously pushed in, the deformation force of the protrusion is converted into axial thrust, pushing the other side retaining ring to tightly fit against the other side wall of the inner convex ring 2213. Ultimately, a force balance state is formed with the elastic support of the protrusion on one side and the rigid pressing of the retaining ring on the other side, so that the inner convex ring 2213 is firmly clamped in the outer ring groove 2221. This not only enhances the radial pressing force but also avoids the deformation of the retaining ring or assembly difficulties caused by the interference fit. At the same time, the elastic support of the protrusion can absorb the dimensional deviations and thermal expansion and contraction deformation of the components, making the structure more adaptable and extending the overall service life of the device.

[0046] In one embodiment, reference is made to Figure 8 The side of the inner retaining ring 2222 facing away from the outer ring groove 2221 is set as a guide surface, and during installation, the inner retaining ring 2222 is guided by the guide surface to pass over the inner convex ring 2213.

[0047] The inner retaining ring 2222 has a guide surface machined on the side facing away from the outer ring groove 2221 (i.e., the side that first contacts the inner convex ring 2213 during assembly). The guide surface adopts a conical surface, arc surface, or chamfered structure, and its inclination angle is set to 30°~60° (preferably 45°, balancing guiding effect and structural strength). The guide surface smoothly transitions from the free end of the inner retaining ring 2222 to the root, and the root is seamlessly connected to the main structure of the inner retaining ring 2222, ensuring uniform force transmission during the guiding process and avoiding stress concentration.

[0048] During assembly, the inner retaining ring 2222 of the sealing ring 222 is aligned with the inner convex ring 2213 of the air duct body 221, and the sealing ring 222 is pushed to move axially. At this time, the guide surface of the inner retaining ring 2222 facing away from the outer ring groove 2221 first contacts the end of the inner convex ring 2213. Since the guide surface is an inclined structure, the axial thrust will be decomposed into a radial component along the guide surface. This component pushes the inner retaining ring 2222 (and the sealing ring 222 body) to produce radial elastic contraction, so that the inner retaining ring 2222 smoothly passes over the end of the inner convex ring 2213 until the inner convex ring 2213 is completely inserted into the outer ring groove 2221.

[0049] In one embodiment, reference is made to Figure 7 The outer retaining ring 2223 is provided with an annular rib 2225 for abutting against the side wall of the receiving groove 1. The outer retaining ring 2223 abuts against the outer wall surface of the receiving groove 1 through the annular rib 2225.

[0050] The outer retaining ring 2223 has an integrally formed annular rib 2225 on the side facing the outer wall of the receiving groove 1 (i.e., the sealing contact surface). The rib is continuously arranged along the circumference of the outer retaining ring 2223 to form a closed annular structure. The cross-sectional shape of the annular rib 2225 is preferably semi-circular, triangular, or trapezoidal. The height of the rib is set to 0.2~1mm (adjusted according to the elasticity of the sealing ring 222 material and the sealing pressure requirements), and the width of the rib is 0.3~2mm. This ensures that the rib can generate sufficient contact pressure while avoiding problems such as poor fit or easy damage due to excessive protrusion.

[0051] After assembly, the outer retaining ring 2223 contacts the outer wall of the receiving groove 1 through the annular rib 2225. Since the rib is a closed annular structure with a small height and width, the sealing contact area changes from surface contact to line contact. According to the principle of pressure distribution, under the same axial pressure, the pressure of line contact is much greater than that of surface contact. Under the combined action of the axial component force generated by the interference fit and the fixing force of the air duct assembly 22, the annular rib 2225 will undergo elastic deformation and be tightly pressed against the outer wall of the receiving groove 1, forming a closed sealing line, effectively sealing any possible tiny gaps, and further preventing hot air from leaking from the contact surface between the outer retaining ring 2223 and the receiving groove 1.

[0052] In one embodiment, reference is made to Figure 6 as well as Figures 9-12 The drying mechanism 2 also includes an electric heater 23; The air duct body 221 includes a first shell 2211 and a second shell 2212 that are radially split along their own extension direction. The first shell 2211 and the second shell 2212 are radially fastened together. The first shell 2211 has a first fixing recess 22111 on its side wall away from the second shell 2212, and the second shell 2212 has a second fixing recess 22121 on its side wall away from the first shell 2211. The two ends of the electric heater 23 are respectively embedded in the first fixing recess 22111 and the second fixing recess 22121, thereby realizing the installation of the electric heater 23 in the air duct body 221.

[0053] The electric heater 23 is a rod-shaped or plate-shaped heating element (such as a PTC heater or heating wire assembly). Its length is adapted to the width of the internal channel of the air duct body 221, and both ends are provided with mounting ends (with a circular or square cross-section) that match two fixing recesses to ensure that it is stable and does not loosen after installation. The electric heater 23 is installed inside the air duct body 221, located between the fan 21 and the air outlet, so that the airflow generated by the fan 21 can completely flow through the surface of the electric heater 23 to achieve airflow heating.

[0054] The main body of the air duct 221 consists of a first shell 2211 and a second shell 2212. The two are radially split in half along the extension direction of the air duct (the direction of airflow transmission), and the split surface is the radial cross-section of the air duct, ensuring that a complete airflow channel is formed after they are fastened together. The side wall of the first shell 2211 away from the second shell 2212 (i.e., the outer side wall) is recessed inward to form a first fixing recess 22111, and the corresponding side wall of the second shell 2212 is recessed inward to form a second fixing recess 22121. The position and size of the two recesses are precisely matched with the mounting ends of the electric heater 23, ensuring that the axis of the electric heater 23 is perpendicular to the axis of the main body of the air duct 221 after installation, and that it is in full contact with the airflow.

[0055] The first housing 2211 and the second housing 2212 can be radially fastened together by snaps, bolts, or ultrasonic welding, forming a sealed air duct after fastening. The two ends of the heater 23 are first respectively embedded in the first fixing recess 22111 and the second fixing recess 22121, and then the two housings are fastened together. The fastening force of the housings clamps the two ends of the heater 23, achieving a stable installation of the heater 23 without the need for additional fasteners. For example, the outer surface of the first housing 2211 is provided with a protruding buckle 22115, and the outer surface of the second housing 2212 is provided with a retaining ring 22123. During assembly, the retaining ring 22123 aligns and fastens with the protruding buckle 22115, ensuring a stable connection between the first housing 2211 and the second housing 2212.

[0056] In this embodiment, after the drying mechanism 2 is activated, the fan 21 operates to generate airflow. The airflow enters the main body of the air duct 221 and first flows over the surface of the heater 23. The heater 23, when energized, heats up the airflow, causing it to heat up rapidly. The heated airflow then passes through the air outlet, sealing ring 222, and air inlet 11, and is guided by the integrated air guide 12 to flow obliquely downwards towards the bottom of the trough, before turning upwards to cover the surface of the cup. The heat exchange efficiency between the hot airflow and the surface of the cup is significantly improved, accelerating moisture evaporation. Combined with a leak-free sealing structure, this further enhances the drying effect.

[0057] The air duct body 221 adopts a radially split design, so that the electric heater 23 is installed in a radially embedded manner. During assembly, the two ends of the electric heater 23 are first placed into the fixing recesses of the first and second housings 2212 respectively, and then the two housings are radially fastened together. The inner wall of the recess is tightly fitted with the mounting end of the electric heater 23. The clamping force after the housings are fastened together makes the electric heater 23 firmly clamped, avoiding displacement caused by airflow impact or vibration.

[0058] In this embodiment, the design of the semi-open shell simplifies the processing and assembly of the air duct body 221. The complex airflow channel can be separated and processed separately on the two shells (such as air guide ribs, fixed recesses, etc.), reducing the processing difficulty. At the same time, the installation of the electric heater 23 can be completed by simply disassembling the two shells, greatly improving the convenience of maintenance.

[0059] In one embodiment, the outer side wall of the first housing 2211 is provided with a first protrusion 22112, and a first fixing recess 22111 is formed on the inner wall of the first housing 2211 at a position corresponding to the first protrusion 22112; the outer side wall of the second housing 2212 is provided with a second protrusion 22122, and a second fixing recess 22121 is formed on the inner wall of the second housing 2212 at a position corresponding to the second protrusion 22122. The first convex bulge 22112 has a wire hole 22113 that connects to the first fixed recess 22111, and the wires of the electric heater 23 extend out through the wire hole 22113.

[0060] The outer wall of the first housing 2211 protrudes outward to form a first convex 22112 (the cross-section of the convex 22112 is circular or square, and the height of the convex 22112 is designed according to the depth requirements of the first fixed recess 22111). Since the first convex 22112 protrudes outward, the inner wall of the corresponding first housing 2211 naturally forms an inwardly recessed first fixed recess 22111. The shape and size of the recess are precisely matched with the mounting end of one end of the heater 23, without the need for additional processing of the recessed structure. The outer wall of the second housing 2212 protrudes outward at the corresponding position to form a second convex 22122, and its inner wall simultaneously forms a second fixed recess 22121, which is adapted to the mounting end of the other end of the heater 23. The wall thickness of the first convex 22112 and the second convex 22122 is consistent with the wall thickness of the main body of the housing (or locally thickened) to ensure structural strength and prevent the convex 22112 from deforming after the heater 23 is installed.

[0061] The outward protrusions of the two side protrusions naturally form fixed recesses on the inner wall. Utilizing the one-piece molding characteristics of the shell material, a precise recess structure can be obtained without additional processing steps. During installation, the heater 23 is inserted into the corresponding recesses of the first and second protrusions 22122 at both ends. After the shell is snapped together, the structural strength of the protrusions ensures that the inner wall of the recess generates a stable clamping force on the mounting end of the heater 23, preventing displacement caused by vibration or airflow impact. At the same time, the outward protrusion design of the protrusions does not occupy the internal space of the air duct, ensuring smooth airflow and preventing turbulence. The wiring of the heater 23 is directly led out through the wire hole 22113 of the first protrusion 22112, avoiding the wiring from getting tangled inside the air duct or coming into contact with the airflow. The wiring is arranged along the outer wall of the shell, without affecting the shell snapping and the overall assembly of the air duct assembly 22.

[0062] In one embodiment, the drying mechanism 2 further includes a temperature sensor 24. The first housing 2211 is provided with a temperature measuring hole 22114 located on the air outlet side of the heater 23. The temperature sensor 24 is installed outside the first housing 2211 aligned with the temperature measuring hole 22114 to detect the temperature inside the air duct assembly 22. Overheat protection is achieved by utilizing the detection of the temperature sensor 24.

[0063] Temperature measuring hole 22114 is provided on the first housing 2211, and the hole is precisely set on the air outlet side of the electric heater 23 (that is, the side where the airflow flows to the air outlet after being heated by the electric heater 23).

[0064] The temperature sensor 24 is a miniaturized thermistor (such as an NTC thermistor or a PT100 temperature sensor 24). Its detection end is aligned with the temperature measuring hole 22114 and installed on the outside of the first housing 2211. The sensor body is fixed to the preset mounting part on the outer wall of the housing by snaps, adhesives or screws. A sealing gasket can be set between the sensor detection end and the temperature measuring hole 22114 to fix the sensor and prevent hot air leakage.

[0065] Temperature sensor 24 is electrically connected to the main control module of the device. The main control module presets a safe temperature threshold (such as 65~90℃, to meet the needs of cup drying and avoid overheating damage). When the sensor detects that the temperature exceeds the threshold, the main control module triggers an overheat protection command to cut off the power to the heater 23 or reduce the heating power.

[0066] The temperature sensor 24 monitors the temperature inside the air duct in real time. When abnormal conditions such as airflow blockage or short circuit of the heater 23 cause the temperature to exceed the standard, the overheat protection can be triggered quickly to cut off the heating power supply, avoid damage to the device due to overheating, and prevent high temperature damage to cups or fire hazards, significantly improving the safety and reliability of the product.

[0067] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, 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 application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0068] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0069] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0070] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A cup drying device, characterized in that, include: A receiving slot (1) is used to hold cups; the side wall of the receiving slot (1) is provided with an air inlet (11), and the inner wall of the receiving slot (1) is provided with an air guide (12) corresponding to the air inlet (11). The air guide (12) is used to guide hot air to blow downwards into the receiving slot (1). The drying mechanism (2) includes a fan (21) and an air duct assembly (22). The air duct assembly (22) includes an air duct body (221) and a sealing ring (222). The air duct body (221) is provided with an air inlet and an air outlet. The fan (21) is connected to the air inlet, and the sealing ring (222) is installed at the air outlet. The sealing ring (222) surrounds the air inlet (11) and abuts against the outer wall of the receiving groove (1), so that the drying mechanism (2) can blow hot air into the receiving groove (1).

2. The cup drying device according to claim 1, characterized in that, The air guide (12) is integrally formed on the inner wall of the receiving groove (1).

3. The cup drying device according to claim 1, characterized in that, The air duct body (221) is provided with an inner convex ring (2213) that protrudes radially inward at the air outlet connection port. The outer periphery of the sealing ring (222) is provided with an outer ring groove (2221) corresponding to the inner convex ring (2213). The sealing ring (222) is fitted onto the inner convex ring (2213) through the outer ring groove (2221).

4. The cup drying device according to claim 3, characterized in that, The outer ring groove (2221) and the inner convex ring (2213) are interference fit.

5. The cup drying device according to claim 4, characterized in that, Along the axial direction of the sealing ring (222), an outer retaining ring (2223) and an inner retaining ring (2222) are formed on both sides of the outer annular groove (2221); The inner retaining ring (2222) includes a plurality of support protrusions (2224) arranged circumferentially around the sealing ring (222). The inner retaining ring (2222) abuts against the inner convex ring (2213) through the support protrusions (2224), so that the outer retaining ring (2223) abuts against the inner convex ring (2213). Alternatively, the outer retaining ring (2223) includes a plurality of support protrusions (2224) arranged circumferentially around the sealing ring (222), and the outer retaining ring (2223) abuts against the inner convex ring (2213) through the support protrusions (2224), so that the inner retaining ring (2222) is tightly abutted against the inner convex ring (2213).

6. The cup drying device according to claim 5, characterized in that, The side of the inner retaining ring (2222) facing away from the outer ring groove (2221) is set as a guide surface, which guides the inner retaining ring (2222) to pass over the inner convex ring (2213) during installation.

7. The cup drying device according to claim 5, characterized in that, The outer retaining ring (2223) is provided with an annular rib (2225) for abutting against the side wall of the receiving groove (1). The outer retaining ring (2223) abuts against the outer wall surface of the receiving groove (1) through the annular rib (2225).

8. The cup drying device according to claim 1, characterized in that, The drying mechanism (2) also includes an electric heater (23); The air duct body (221) includes a first shell (2211) and a second shell (2212) that are radially split along their own extension direction. The first shell (2211) and the second shell (2212) are radially fastened together. The first shell (2211) has a first fixing recess (22111) on the side wall away from the second shell (2212), and the second shell (2212) has a second fixing recess (22121) on the side wall away from the first shell (2211). The two ends of the electric heater (23) are respectively embedded in the first fixing recess (22111) and the second fixing recess (22121), thereby realizing the installation of the electric heater (23) in the air duct body (221).

9. The cup drying device according to claim 8, characterized in that, The outer side wall of the first housing (2211) is provided with a first protrusion (22112), and a first fixing recess (22111) is formed on the inner wall of the first housing (2211) at a position corresponding to the first protrusion (22112); the outer side wall of the second housing (2212) is provided with a second protrusion (22122), and a second fixing recess (22121) is formed on the inner wall of the second housing (2212) at a position corresponding to the second protrusion (22122). The first convex bulge (22112) has a wire hole (22113) that connects to the first fixed recess (22111), and the wires of the electric heater (23) extend out through the wire hole (22113).

10. The cup drying device according to claim 8, characterized in that, The drying mechanism (2) further includes a temperature sensor (24). The first housing (2211) is provided with a temperature measuring hole (22114) located on the air outlet side of the heater (23). The temperature sensor (24) is installed outside the first housing (2211) aligned with the temperature measuring hole (22114) to detect the temperature inside the air duct assembly (22).

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