Shoe drying device

Abstract

The utility model relates to a shoe drying device which comprises at least one shoe drying unit, each shoe drying unit comprises an air guide pipe, an air duct for air flow to flow is arranged in each air guide pipe, one end of each air duct is provided with a fan for driving the air flow, and the other end of each air duct is provided with an air outlet for the air flow to flow out of the air duct. The electric heating shoe is characterized in that the air outlet is provided with an air nozzle, the air nozzle can extend into the shoe body and is in an arc shape which is bent from a shoe opening to a shoe head, and the tail end of the air nozzle is provided with an air supply opening which is used for supplying air flow to the shoe head. The arc-shaped tuyeres are arranged on the air outlets of the air ducts, the air supply outlets of the tuyeres are aligned with the shoe heads to blow out, and the air flows outwards from the periphery attached to the inner walls of the shoe bodies, so that a stable flow field can be formed in the shoe cavities, hot air cannot interfere with one another, and the drying efficiency of the inner surfaces of the shoe cavities is high; the air nozzles blow and dry the shoe cavities in a non-contact mode, and the inner walls of the shoe cavities are prevented from being scalded.

Description

Technical Field

[0001] The utility model relates to the technical field of shoe drying devices, in particular to a shoe drying device. Background Art

[0002] Shoes are essential daily wear for humans, protecting the feet, keeping them warm, and providing support and cushioning. Due to their functions, the uppers and sole linings of shoes are typically thick, made from multiple layers of fabric and padding. Therefore, once shoes get wet from washing, rain, or even sweat, they are difficult to restore to a dry, wearable state. Drying shoes is particularly troublesome during the rainy seasons in southern China. Traditionally, shoes are typically dried naturally or by a stove. However, natural drying is often difficult to meet demand due to factors such as weather and sunlight. Now that urban households all use natural gas, traditional stoves are no longer available for drying shoes, making this option impossible. Therefore, how to quickly dry wet shoes has become a real problem that plagues people.

[0003] To address this problem, some heating sheets have appeared on the market. These are compact and can be placed inside the shoe cavity after being powered on to dry the shoes. However, heating sheets primarily rely on their own heat, which is emitted in the form of thermal radiation, to achieve drying. On the one hand, parts of the shoe that are far from the heating sheet are not easily dried; on the other hand, the shoe body that is in direct contact with the heating sheet may experience localized overheating, resulting in burns. Furthermore, the drying principle only utilizes thermal radiation to increase the temperature of the shoe body, thereby allowing the absorbed moisture inside the shoe body to evaporate and naturally escape from the shoe body. Without forced air convection, the evaporated water vapor inside the shoe body cannot be quickly discharged. At the same time, to prevent burns on the shoe body, the power cannot be too high, so the overall drying efficiency is less than ideal.

[0004] To this end, a number of new shoe drying devices have appeared on the market, which mainly rely on the hot air blown out from the shoe drying device to dry the shoe cavity in the form of thermal convection. For example, the Chinese utility model patent "Portable Shoe Dryer" with patent number ZL202221832365.7 (publication number CN218009668U) discloses such a device, which includes a housing, a shoe drying rack, and a shoe cover drying column. The housing is provided with a power supply and a PTC heating plate connected to the power supply. Hot air holes are evenly distributed on the surface of the shoe cover drying column. The shoe drying rack and the shoe cover drying column are provided with external air ducts connected to the hot air holes. A connecting column is provided at the connection between the housing and the shoe drying rack. The hot air generated by the PTC heating plate is guided into the external air duct through the connecting column, and the hot air holes are used to dry the inside of the shoe on the shoe cover drying column. However, the wall of the shoe drying rack is provided with numerous densely distributed hot air holes for blowing out hot air. The air flow speed on the hot air holes is relatively small, and moves in different directions. The air flows will interfere with each other, which is not conducive to the thermal convection of the air. There may even be local vortices spinning in place, which is not conducive to the timely removal of evaporated water vapor, resulting in some areas in the shoe cavity being difficult to dry, which not only affects the drying efficiency, but also the drying effect is not uniform enough; secondly, the shoe drying rack is linear, and the inner surface of the shoe cavity will partially contact the shoe drying rack, which may cause local excessive temperature and burn the shoe body.

[0005] Therefore, it is necessary to further improve the shoe drying device. Utility Model Content

[0006] The technical problem to be solved by the present invention is to provide a shoe drying device with high drying efficiency in view of the above-mentioned existing technical status.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the present invention comprises a shoe drying device, comprising at least one shoe drying unit, each shoe drying unit comprising an air duct, an air duct provided in the air duct for air flow, a fan for driving the air flow provided at one end of the air duct, an air outlet for air flow out of the air duct provided at the other end of the air duct, a heating element for heating the air flow provided in the air duct, an air nozzle provided at the air outlet, the air nozzle being extendable into the shoe body and being in an arc shape bending from the shoe opening to the shoe toe, and an air supply port provided at the end of the air nozzle for sending the air flow in the direction of the shoe toe. When two groups of shoe drying units are provided in the shoe drying device, both independent air ducts and a shared air duct can be used. When the two groups of shoe drying units use a shared air duct, only one corresponding fan and heating element can be provided, and the air duct is bifurcated near the air outlet to form two air outlet sections, and the different air outlet sections are equipped with independent air nozzles. The present invention provides an air outlet at the end of the curved nozzle to direct airflow toward the toe of the shoe. This allows the hot air to blow directly toward the toe of the shoe and then flow outward along the inner wall of the shoe, forming a relatively stable flow field. The hot air streams essentially do not interfere with each other, and eddies are less likely to form inside the shoe. This helps the hot air carry heat throughout the shoe, heating it and facilitating water evaporation. More importantly, it helps the hot air quickly carry evaporated water vapor out of the shoe, disrupting the water vapor balance on the inner surface of the shoe and promoting rapid evaporation. In other words, the present invention not only fully utilizes thermal radiation and heat conduction to dry the shoes, but also fully utilizes air convection to dry the shoes. Therefore, testing has shown that the present invention, when provided with an air outlet only at the end of the nozzle, improves drying efficiency by approximately 30% compared to the existing method of densely distributing small air outlets throughout the nozzle. This air outlet can be the sole outlet. Of course, a smaller number of outlets can also be added to the sidewalls of the nozzle as appropriate. However, the terminal outlet must be the primary outlet. This means it should account for the majority of the hot air flow to avoid interfering with the proper flow field. For example, the heels of shoes, especially sneakers, are often thick and difficult to dry. Furthermore, the heels are concave, where the hot air can short-circuit, resulting in a lower flow rate or even a dead zone, hindering the drying of the heels. In this case, consider adding an auxiliary nozzle to direct airflow toward the heels. For example, for some mid-top or even high-top shoes, consider adding a small number of small holes to the sidewalls of the nozzle as needed to increase heat supply to the desired area.

[0008] The cross section of the inner cavity of the air nozzle gradually converges along the air supply direction. Such a design is conducive to increasing the air flow velocity of the air outlet, making it easier for the air nozzle to effectively blow hot air toward the shoe toe.

[0009] The cross-sectional area of ​​the air outlet of the nozzle is at least 75% of the total cross-sectional area of ​​all the air outlets on the nozzle. Even if a small number of small air outlets are opened on the side wall of the nozzle, it is still necessary to ensure that the air outlet at the end is the main air outlet, which should account for the majority of the hot air flow of the nozzle to ensure the stability of the flow field.

[0010] The air duct is equipped with a temperature control assembly, which includes a temperature sensor for detecting the outlet air temperature and a controller for controlling the heat output of the heating element. These components help control excessive temperatures to prevent shoes from being burned, and also help set the appropriate temperature based on the material of the shoes.

[0011] The air duct is arc-shaped with a concave middle section, forming a lowest point on the duct. The fan and heater are both positioned above this lowest point. This concave middle section design helps fully utilize the space within the base and creates an overall arc-shaped transition between the air duct and the flow channel within the nozzle, which helps reduce wind resistance. Furthermore, in certain situations, if water accidentally enters the duct through the duct outlet, the fan and heater are positioned above the lowest point of the duct, which can prevent damage to the fan and heater to a certain extent.

[0012] A protrusion is provided on the outer side wall of the air nozzle to separate the outer side wall of the air nozzle from the inner side wall of the shoe body and form a channel for air flow to flow out between the two.

[0013] The protrusions are strip-shaped ribs extending in the direction of airflow. Preferably, multiple such ribs are provided circumferentially spaced apart on the outer wall of the nozzle. These strip-shaped ribs extend in the direction of airflow, effectively isolating the nozzle outer wall from the inner wall of the shoe body while also creating a smooth airflow path between them.

[0014] The present shoe drying device further includes a base, the air nozzle being exposed on the upper surface of the base, the fan and air duct being disposed within the base, and a bracket corresponding to the air nozzle being provided on the base for supporting the toe of the shoe. This bracket is configured to position the toe of the shoe so that, when the shoe to be dried is placed on the air nozzle and bracket, the toe faces downward and the toe is higher than the heel. After washing or rain-soaked shoes, even with a spin dryer, it is often difficult to ensure that the shoes do not drip before drying. If they are not spin-dried, significant dripping is inevitable. Existing shoe drying devices often dry the shoes with the sole facing downward and the toe facing upward, such as heating element shoe drying devices. While some hot air shoe drying devices allow the shoe to be tilted, the heel is often at the lowest point. Both the sole and the heel are often waterproof, preventing any water from escaping these areas. Heat is the only way to forcefully dry the water, significantly impacting the drying efficiency of the shoe drying device. The technical solution employed by this new shoe drying device allows dripping water to flow smoothly out of the shoe, undoubtedly significantly improving shoe drying efficiency compared to existing technologies. Furthermore, the air nozzle and bracket provide two-point support for the shoe, allowing the shoe to be directly inserted and placed on the drying device during use, eliminating the steps of opening and retracting the bracket in traditional shoe drying devices, making operation more convenient. Furthermore, this "inverted C"-shaped support ensures a well-ventilated environment outside the shoe, facilitating overall drying of the shoe.

[0015] The angle α formed between the airflow exiting the air outlet and the horizontal plane satisfies the following conditions: 15°≤α≤45°. Through optimization testing, this angle facilitates placement of the nozzle into the shoe, particularly helps direct the hot air toward the shoe toe, and also facilitates placing the shoe to be dried on the nozzle and stand with the shoe toe facing downward and the shoe toe higher than the heel.

[0016] The air nozzle is detachably mounted on the base. The air nozzle is detachably connected, which makes it convenient for the user to change to an appropriate air nozzle according to the characteristics of the shoes, such as the height of the shoe upper.

[0017] The nozzle and the base are connected by magnetic attraction, snap-on or threaded connection.

[0018] The bracket and the base are detachably connected, which helps to adopt a bracket of appropriate height according to the characteristics of the shoes.

[0019] The bracket and the base are connected in a magnetic or snap-on manner.

[0020] The bracket includes a bracket seat and a bracket body, wherein the bracket seat is detachably arranged on the base. Alternatively, the bracket body can be selectively detachably arranged on the bracket seat.

[0021] The support body comprises a support rod which is arranged on the support seat and extends upward, and a support arm which is arranged on the support rod and is used for placing the toe of the shoe.

[0022] The support rod is a telescopic rod structure with adjustable length. The use of the telescopic rod structure will make it more convenient for users to adjust the height of the bracket according to the characteristics of the shoes.

[0023] The shoe drying unit on the shoe drying device of the present invention can be only one, or two or even more. According to general usage habits and needs, it is preferably two and arranged side by side so as to dry a pair of shoes at the same time.

[0024] This new shoe drying device features a concave water collection box on the upper surface of the base, corresponding to the area beneath the shoes. The base also houses a water collection box, and a drainage structure is provided between the two boxes to direct wastewater from the collection box into the water collection box. Existing shoe drying devices lack a wastewater (drip) collection mechanism, allowing water to drip onto the machine surface or even onto the floor. After drying the shoes, the wastewater or water stains need to be wiped away. This new shoe drying device, with its wastewater collection mechanism, effectively solves this problem.

[0025] The water receiving box is arranged at the bottom of the base and is detachably connected to the base.

[0026] The base is provided with a slot that allows the water receiving box to be inserted and removed, thereby forming the detachable connection.

[0027] The upper surface of the base is higher at both ends and lower in the middle, so the water collecting box includes three sub-water collecting boxes: front, middle and rear, and a drainage structure is provided between each sub-water collecting box and the water receiving box.

[0028] A drainage hole is provided at the bottom of the water collecting box, and a drainage pipe is connected to the drainage hole to lead sewage into the water collecting box. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model;

[0030] Figure 2 It is a front view of the first embodiment of the utility model;

[0031] Figure 3 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present utility model (the base, knob and bracket are omitted);

[0032] Figure 4 This is a schematic diagram of the exploded three-dimensional structure of the first embodiment of the present utility model;

[0033] Figure 5This is a schematic longitudinal cross-sectional view of the first embodiment of the present utility model;

[0034] Figure 6 This is another exploded perspective view of the first embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model from another direction;

[0036] Figure 8 for Figure 3 Schematic diagram of the three-dimensional structure in another direction;

[0037] Figure 9 This is another longitudinal cross-sectional schematic diagram of the first embodiment of the present utility model;

[0038] Figure 10 This is a cross-sectional view of the air nozzle and the auxiliary air nozzle according to the second embodiment of the present invention.

[0039] In the figure: 1. Shoe drying unit; 11. Air guide duct; 111. Air outlet; 112. Air duct; 12. Fan; 2. Heating element; 3. Air nozzle; 31. Air supply outlet; 4. Auxiliary air nozzle; 5. Temperature control component; 51. Temperature sensor; 52. Controller; 6. Raised rib; 7. Base; 71. Water collecting box; 711. Sub-water collecting box; 712. Drain hole; 72. Slot; 8. Bracket; 81. Bracket seat; 82. Bracket body; 821. Support rod; 822. Support arm; 9. Water collecting box; 10. Drainage pipe. DETAILED DESCRIPTION

[0040] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0041] Example 1:

[0042] like Figures 1 to 9 The figure shows a preferred embodiment of the present invention. The shoe drying device comprises two shoe drying units 1, each of which includes an air duct 11. The air duct 11 has an air duct for air flow. A fan 12 is provided at one end of the air duct to drive the air flow, and an air outlet 111 is provided at the other end of the air duct for air flow out of the air duct. The air duct is also provided with a heating element 2 for heating the air flow. The air outlet 111 is provided with a nozzle 3. The nozzle 3 can extend into the shoe body and is curved from the shoe opening to the shoe toe. The nozzle 3 has an air supply port 31 at its end to direct the air flow toward the shoe toe. The hot air is blown out from the air supply port 31 toward the shoe toe, and then flows outward from all sides along the inner wall of the shoe body, forming a relatively stable flow field. There is basically no mutual interference between the hot air, and it is not easy to form vortices in the shoe. The heat of the hot air increases the temperature in the shoe cavity, which is conducive to the evaporation of water. Finally, the hot air quickly carries the evaporated water vapor out of the shoe body, thereby achieving rapid drying.

[0043] refer to Figure 2 and Figure 5 The cross-section of the inner cavity of the air nozzle 3 gradually converges along the air supply direction. The first end of the air nozzle 3 is connected to the air outlet 111 of the air guide 11, and the air supply port 31 is provided on the second end of the air nozzle 3. The cross-section of the air nozzle 3 gradually decreases from the first end to the second end. When the air output of the air duct 112 remains constant, the air flow velocity at the second end will be greater than that at the first end, which is more conducive to the hot air being blown toward the shoe toe. In order to make the air supply port 31 occupy the main hot air flow of the air nozzle 3, the cross-sectional area of ​​the air supply port 31 of the air nozzle 3 is 75% of the total cross-sectional area of ​​all the air supply ports on the air nozzle 3, so as to avoid interfering with the proper flow field.

[0044] refer to Figure 1 and Figure 5 Since shoes of different working conditions and materials have different requirements for air supply temperature, if the temperature is too low, the drying time will be prolonged; if the temperature is too high, burns will occur inside the shoe cavity. Therefore, a temperature sensor 51 needs to be provided to detect the air supply temperature for the convenience of subsequent control. A temperature control component 5 is provided on the air duct 11 in this embodiment. The temperature control component 5 includes a temperature sensor 51 for detecting the outlet air temperature and a controller 52 for controlling the heat amount of the heating element 2. When the sensor detects that the air supply temperature is too low, the knob adjusts the controller 52 to increase the heat generated by the heating element 2 and thus increase the air supply temperature; when the sensor detects that the air supply temperature is too high, the knob adjusts the controller 52 to reduce the heat generated by the heating element 2 and thus reduce the air supply temperature.

[0045] refer to Figure 5 The air duct 112 is in the shape of an arc with a concave middle section, thus forming a lowest point on the air duct 112. The fan 12 and the heating element 2 are both located above this lowest point. Since a lot of water will drip into the shoe cavity during the initial stage of shoe drying, when this water accidentally enters the air duct 112, it will gather near the lowest point of the air duct 112. At this time, since the fan 12 and the heating element 2 are both located above the lowest point, damage to the fan 12 and the heating element 2 can be avoided to a certain extent. In addition, the concave middle section design helps to fully utilize the space within the base 7 and makes the air duct 112 and the flow channel within the nozzle 3 form an arc-shaped transition as a whole, which helps to reduce wind resistance.

[0046] refer to Figure 4 and Figure 5The outer wall of the nozzle 3 is provided with a protrusion to separate the outer wall of the nozzle 3 from the inner wall of the shoe body and form a channel for airflow between the two. In this embodiment, the protrusion is preferably a strip-shaped rib 6 provided on the outer wall of the nozzle 3 and spaced circumferentially. There are two strips of rib 6 on the front and rear sides of the nozzle 3, and one on each of the left and right sides. The strips of rib 6 extend in the direction of airflow, effectively isolating the outer wall of the nozzle 3 from the inner wall of the shoe body while also forming a smooth airflow channel between the two.

[0047] In addition, existing shoe drying devices mainly fix shoes by placing the soles or heels facing downwards. Since the soles and heels are waterproof, the water cannot be directly discharged from the shoe cavity. The shoe can only be dried by the heat provided by the hot air of the shoe drying device, which reduces the drying efficiency of the shoe drying device. Figure 5 and Figure 7 The shoe drying device in this embodiment also includes a base 7, with the air nozzle 3 exposed on the upper surface of the base 7. The fan 12 and the air duct 11 are arranged inside the base 7. The base 7 is also provided with a bracket 8 corresponding to the air nozzle 3. The bracket 8 is used to place the toe of the shoe. When the shoe to be dried is placed on the air nozzle 3 and the bracket 8, the shoe mouth is facing downward and the toe is higher than the heel. This allows the drained water to flow out of the shoe body smoothly, thereby improving the drying efficiency of the shoe drying device. The air nozzle 3 and the bracket 8 provide two-point support for the shoe body. During use, the shoe body can be directly inserted and placed on the shoe drying device, eliminating the steps of opening the traditional shoe drying device and retracting the bracket. Secondly, this "inverted C" shape support and fixing method can ensure that the outside of the shoe body is in a good ventilation environment, which is conducive to the drying of the entire shoe. In this mounting arrangement, the angle α formed between the airflow exiting the air outlet 31 of the nozzle 3 and the horizontal plane satisfies the following conditions: 15°≤α≤45°. Optimization testing has shown that within this angle range, the nozzle 3 is easily placed in the shoe, while also being particularly helpful in directing the hot air toward the shoe toe. Furthermore, when the shoe to be dried is placed on the nozzle 3 and bracket 8, the shoe toe faces downward and the shoe toe is higher than the heel. The specific value of this angle can be adjusted based on the shoe type. In this embodiment, the preferred angle α between the airflow and the horizontal plane is 38°.

[0048] refer to Figure 3 and Figure 4After long-term use, the air nozzle 3 is prone to dust and stains, and needs to be removed regularly for cleaning. At the same time, different shoe types require matching different air nozzles 3. For example, shoes with high uppers require matching long air nozzles 3, and shoes with low uppers require matching short air nozzles 3. Therefore, considering two factors, the preferred air nozzle 3 in this embodiment is set on the base 7 in a detachable manner. There are various forms of connection between the air nozzle 3 and the base 7, such as magnetic connection, snap connection or threaded connection, etc. Considering the convenience and firmness of the installation of the air nozzle 3, it is preferred in this embodiment to snap-connect the air nozzle 3 to the base 7.

[0049] refer to Figure 4 and Figure 5 , the types of shoes to be dried are different. In order to select the appropriate bracket 8 according to the characteristics of the shoes, the bracket 8 and the base 7 in this embodiment are detachably connected, wherein the connection method of the bracket 8 and the base 7 can be a magnetic connection or a snap-on connection, etc. In this embodiment, the preferred method is a magnetic connection that is easy to install. The bracket 8 includes a bracket seat 81 and a bracket body 82. The bracket seat 81 is detachably arranged on the base 7, and the bracket body 82 is detachably arranged on the bracket seat 81. The bracket body 82 includes a support rod 821 arranged on the bracket seat 81 and extending upward, and a support arm 822 arranged on the support rod 821 for placing the toe of the shoe. The support rod 821 is a telescopic rod structure with adjustable length. The use of a telescopic rod structure will make it more convenient for users to adjust the height of the bracket 8 according to the characteristics of the shoes.

[0050] refer to Figure 3 and Figure 8 The number of shoe drying units 1 in the shoe drying device can be adjusted according to needs. In this embodiment, based on the space size inside the base 7, the number of shoe drying units 1 is set to two, and they are arranged side by side. During use, a pair of shoes can be placed on the shoe drying device at the same time to complete drying.

[0051] In addition, the existing shoe drying device does not have a sewage (dripping) collection mechanism, and water will drip onto the surface of the machine or even the ground. After drying the shoes, you need to wipe off the sewage or water stains, which is inconvenient. Figure 8 and Figure 9The bottom of the water collecting box 71 is provided with a drainage hole 712, and the drainage hole 712 is connected to the drainage pipe 10 for introducing the sewage into the water collecting box 9. At this time, the drained water in the shoe cavity will drip onto each sub-water collection box 711 and flow into the base 7 through the drainage hole 712. Under the guidance of the drainage tube 10, the drained water will drip into the water receiving box 9. When the sewage in the water receiving box 9 is collected to a certain amount, the water receiving box 9 can be taken out from the slot 72 of the base 7, the sewage can be poured out and the water receiving box 9 can be installed into the slot 72 for continued use.

[0052] Example 2:

[0053] The difference between this embodiment and embodiment 1 is only the structure of the air nozzle 3. Figure 10 In this embodiment, the air nozzle 3 is also provided with an auxiliary air nozzle 4 to direct airflow toward the heel. Since the heel is often thick, especially for sneakers, it is not easy to dry. Furthermore, the heel is concave, where the hot air may short-circuit and have a low flow rate, or even become a dead angle, which is not conducive to drying the heel. Therefore, providing an auxiliary air nozzle 4 on the air nozzle 3 allows a portion of the airflow in the air duct 11 to be blown toward the toe of the shoe from the air supply port 31 of the air nozzle 3, while the remaining portion of the airflow is blown toward the heel from the air supply port 31 of the auxiliary air nozzle 4. This ensures that the shoe cavity is dry and the heel is also more easily dried. The air outlet of the auxiliary air nozzle 4 is designed to be smaller than that of the air nozzle 3. That is, the air supply port 31 at the end of the air nozzle 3 is the main air outlet, accounting for the majority of the hot air flow.

Claims

1. A shoe drying device, comprising at least one shoe drying unit (1), each shoe drying unit (1) comprising an air duct (11), an air duct (112) for air flow being provided in the air duct (111), a fan (12) for driving the air flow being provided at one end of the air duct (112), an air outlet (111) for air flow out of the air duct (112) being provided at the other end of the air duct (112), a heating element (2) for heating the air flow being further provided in the air duct (112), and characterized in that: The air outlet (111) is provided with an air nozzle (3), which can extend into the shoe body and is in an arc shape bending from the shoe opening to the shoe toe, and the air nozzle (3) is provided with an air supply port (31) at its end for sending air flow toward the shoe toe.

2. The shoe drying device according to claim 1, characterized in that: The cross section of the inner cavity of the air nozzle (3) gradually converges along the air supply direction.

3. The shoe drying device according to claim 2, characterized in that: The cross-sectional area of ​​the air supply opening (31) of the air nozzle (3) is at least 75% of the total cross-sectional area of ​​all the air supply openings (31) on the air nozzle (3).

4. The shoe drying device according to claim 1, characterized in that: The air nozzle (3) is also provided with an auxiliary air nozzle (4) for directing the air flow toward the heel.

5. The shoe drying device according to claim 1, characterized in that: A temperature control component (5) is provided on the air guide pipe (11), and the temperature control component (5) includes a temperature sensor (51) for detecting the outlet air temperature and a controller (52) for controlling the heat amount of the heating element (2).

6. The shoe drying device according to claim 1, characterized in that: The air duct (112) is in an arc shape with a concave middle section, thereby forming a lowest point on the air duct (112), and the fan (12) and the heating element (2) are both arranged at positions higher than the lowest point.

7. The shoe drying device according to claim 1, characterized in that: A protrusion is provided on the outer wall of the air nozzle (3) to separate the outer wall of the air nozzle (3) and the inner wall of the shoe body and form a channel for air flow to flow out between the two.

8. The shoe drying device according to claim 7, characterized in that: The protrusion is a strip-shaped rib (6) extending along the airflow direction.

9. The shoe drying device according to claim 8, characterized in that: Several convex ribs (6) are provided on the outer side wall of the air nozzle (3) at intervals along the circumferential direction.

10. The shoe drying device according to any one of claims 1 to 9, characterized in that: The invention also comprises a base (7), the air nozzle (3) is exposed on the upper surface of the base (7), the fan (12) and the air guide pipe (11) are arranged inside the base (7), and the base (7) is also provided with a bracket (8) corresponding to the air nozzle (3), and the bracket (8) is used to place the toe of the shoe, so that when the shoe to be dried is placed on the air nozzle (3) and the bracket (8), the shoe mouth is facing downward and the toe is higher than the heel.

11. The shoe drying device according to claim 10, characterized in that: The angle α formed by the air flow flowing out of the air supply port (31) and the horizontal plane satisfies the following: 15°≤α≤45°.

12. The shoe drying device according to claim 10, characterized in that: The air nozzle (3) is detachably arranged on the base (7).

13. The shoe drying device according to claim 12, characterized in that: The air nozzle (3) and the base (7) are connected by a magnetic attraction type, a snap-on type connection or a threaded type connection.

14. The shoe drying device according to claim 10, characterized in that: The bracket (8) and the base (7) are detachably connected.

15. The shoe drying device according to claim 14, characterized in that: The bracket (8) and the base (7) are connected in a magnetic or snap-fit ​​manner.

16. The shoe drying device according to claim 10, characterized in that: The bracket (8) comprises a bracket seat (81) and a bracket body (82); the bracket seat (81) is detachably arranged on the base (7).

17. The shoe drying device according to claim 16, characterized in that: The bracket body (82) is detachably arranged on the bracket seat (81).

18. The shoe drying device according to claim 16, characterized in that: The support body (82) comprises a support rod (821) arranged on the support seat (81) and extending upward, and a support arm (822) arranged on the support rod (821) for placing the toe of the shoe.

19. The shoe drying device according to claim 18, characterized in that: The support rod (821) is a telescopic rod structure with adjustable length.

20. The shoe drying device according to any one of claims 10 to 19, characterized in that: There are two shoe drying units (1) which are arranged side by side.

21. The shoe drying device according to any one of claims 10 to 20, characterized in that: A concave water collecting box (71) is provided on the upper surface of the base (7) corresponding to the bottom of the shoe, and a water collecting box (9) is also provided on the base (7). A drainage structure for guiding sewage in the water collecting box (71) into the water collecting box (9) is provided between the water collecting box (71) and the water collecting box (9).

22. The shoe drying device according to claim 21, characterized in that: The water receiving box (9) is arranged at the bottom of the base (7) and is detachably connected to the base (7).

23. The shoe drying device according to claim 22, characterized in that: The base (7) is provided with a slot (72) that allows the water receiving box (9) to be inserted into and removed from the base, thereby forming the detachable connection.

24. The shoe drying device according to claim 21, characterized in that: The upper surface of the base (7) is higher at both ends and lower in the middle, so the water collection box (71) includes three sub-water collection boxes (711), namely the front, middle and rear sub-water collection boxes, and a drainage structure is provided between each sub-water collection box (711) and the water receiving box (9).

25. The shoe drying device according to any one of claims 21 to 24, characterized in that: The bottom of the water collecting box (71) is provided with a drainage hole (712), and the drainage hole (712) is connected to a drainage pipe (10) for introducing sewage into the water collecting box (9).

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