Body drying device

Abstract

The utility model discloses a body drying device which comprises a shell, a first circuit board and two air channels are connected in the shell, the air channels are located on the side face of the first circuit board, air inlets are formed in the front end and the rear end of the shell respectively, and the two air inlets are communicated with one ends of the two air channels respectively. The shell is provided with two assembly ports matched with the other ends of the two air channels respectively, the two assembly ports are located at the two ends of the same side wall of the shell respectively, the other ends of the air channels are connected with the corresponding assembly ports in a sealed mode and provided with a plurality of air outlets, and a filter, a motor, a main control board and a heater are connected into the air channels respectively. The filter, the motor, the main control board and the heater are sequentially distributed from the end, communicated with the air inlet, of the air duct to the other end of the air duct, the main control board is electrically connected with the motor, the heater and the first circuit board, and a touch panel and a power line which are electrically connected with the first circuit board are arranged outside the shell. The utility model has the beneficial effects that the air volume is increased, and the drying speed is increased at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field related to body drying machines, in particular to a body drying device. Background Art

[0002] After bathing, people need to dry themselves. Traditional towel drying methods have drawbacks in terms of drying efficiency, hygiene, and convenience. For example, in public showers, shower rooms and changing rooms are often connected. Shower mist drifts into the changing rooms, causing the air in the changing rooms to be highly humid. Using a towel alone, especially a half-dried towel from a shower, to dry oneself is ineffective. Not only does getting dressed feel awkward, but it can also lead to catching a cold. Some customers use a hair dryer to dry themselves all over, which is time-consuming and cumbersome, especially for those with long hair. Furthermore, public showers often have limited facilities and regulations prohibiting the use of hair dryers. Furthermore, from a hygiene perspective, if you only have one towel, using it to dry yourself from head to toe is unhygienic. Furthermore, using a towel to dry yourself in the changing room can cause the dried water to accumulate on the floor, increasing management costs and complexity. For example, using hotel towels or hand towels to dry yourself in a hotel also presents certain hygiene risks. At home, using towels or bath towels also leads to resource consumption issues related to storage, washing, and drying. Furthermore, in healthcare and elderly care settings, there are also concerns about mobility issues, frailty, and poor self-care abilities among patients and elderly individuals. Therefore, body dryers have been developed to address these shortcomings of traditional towel drying.

[0003] In the existing technology, the dryer still has the following deficiencies: since the dryer is usually used in an environment with high humidity and temperature, the main control board in the dryer usually cannot dissipate heat effectively, and its surface is usually covered with a certain degree of water vapor, which is not conducive to extending its service life; when the dryer is working, it makes a lot of noise, which is not conducive to human health and environmental protection; the dryer has a single blowing position, resulting in insufficient air volume, and there is also a problem of uneven wind speed, which is not conducive to achieving a quick drying effect, etc. Utility Model Content

[0004] The utility model aims to overcome the shortcoming of slow drying speed of the body drying machine in the prior art and provides a body drying device which is beneficial to improving the drying speed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] 18. The heat shield assembly of claim 17, wherein the vents are connected to the housing to provide a vent for the fan and a filter. The vents are connected to the housing to provide a vent for the fan. The vents are connected to the housing to provide a vent for the fan.

[0007] A circuit board and two air ducts are detachably connected in the shell, and the air ducts are located on the side of the circuit board. Air inlets are provided at the front and rear ends of the shell, and the two air inlets are respectively connected one-to-one with one end of the two air ducts. The shell is provided with two assembly ports that match the other ends of the two air ducts one-to-one, and the two assembly ports are respectively located at the two ends of the same side wall of the shell. The other end of the air duct is sealed with the corresponding assembly ports and is provided with a number of air outlets. A filter, a motor, a main control board and a heater are detachably connected in the air duct, and the filter, motor, main control board and heater are distributed in sequence from one end of the air duct connected to the air inlet to the other end thereof. The main control board is electrically connected to the motor, heater and circuit board one respectively. A touch panel and a power cord are provided on the outside of the shell, which are both electrically connected to circuit board one, and the touch panel and power cord are both sealed with the shell. The user can control the start and stop of the dryer and adjust the temperature through the touch panel; the main control board controls the operation of the motor and the heater respectively. Driven by the motor, natural wind is filtered by the filter and enters the air duct from the air inlet, flows through the main control board, is heated by the heater, and finally blows toward the human body through the air outlet, thereby drying the human body; therefore, the main control board is located between the heater and the motor, which is conducive to the natural cold air to dissipate heat and remove water vapor from the main control board, thereby achieving the purpose of facilitating the heat dissipation of the main control board and extending the service life of the main control board; two air ducts are arranged in the shell, each of which is equipped with a filter, a motor, a main control board and a heater. Through the above process, the heated air in the two air ducts is blown toward the front and back sides of the human body from the air outlets at the two assembly ports respectively, thereby increasing the air volume and achieving the purpose of improving the drying speed; the ends of the air ducts are sealed with the corresponding assembly ports, and the touch panel and the power cord are both sealed with the shell, thereby improving the waterproof sealing of the dryer. At the same time, since the motor is placed in the air duct, it is conducive to reducing noise.

[0008] Preferably, both ends of the top of the housing are outwardly protruding to form bosses, one end of which is fixedly connected to the housing and integrally formed, and the assembly opening is located at the other end of the boss. The end face of the boss where one assembly opening is located is inclined toward the boss where the other assembly opening is located, forming an inclined structure. The inclined end faces of the bosses where the two assembly openings are located facilitate more concentrated hot air blowing toward the front and back sides of the human body, thereby improving the drying effect on the human body.

[0009] Preferably, a plurality of foot pads are fixed to the bottom of the housing and are evenly distributed along the edge of the housing. The dryer is placed on the ground with the foot pads, which is not only anti-slip, but also helps to balance the vibration of the dryer and reduce noise.

[0010] Preferably, two circuit boards (2) are detachably connected to the housing, one on each side of the air duct. A human body sensor is provided on each side of the housing, electrically connected to the two circuit boards (2), and the circuit boards (2) are electrically connected to the main control board. The dryer utilizes the human body sensor for human body sensing control, providing immediate and sensitive response and convenient operation. When a user straddles the dryer with their feet, the human body sensor senses the presence of a person and transmits a signal to the main control board, which then controls the dryer's operation.

[0011] Preferably, the housing is provided with a cavity and two air inlet chambers, the two air inlet chambers being located at the front and rear ends of the housing, respectively, the cavity being located between the two air inlet chambers, the air duct being detachably connected to the cavity, the air inlet being located on one side of the air inlet chamber, one end of the air duct passing through the other side of the air inlet chamber and then communicating with the air inlet chamber, the portion of the air duct passing through the air inlet chamber being sealed to the sidewall of the air inlet chamber. The air inlet chambers facilitate enhancing the natural wind intake and filtration effects, thereby increasing the airflow volume of the air duct; the air inlets being located at the front and rear ends of the housing facilitate preventing impurities such as hair from entering the air duct.

[0012] Preferably, one side of the air inlet chamber where the air inlet is located and the other side of the air inlet chamber connected to the air duct are both arched outward to form a concentric arc structure, and the air inlet is provided with a grille. The design of the arc structure on both sides of the air inlet chamber helps reduce wind resistance, allowing the air duct to effectively guide the intake of natural wind, further improving the intake of natural wind and helping to reduce noise.

[0013] Preferably, the two air ducts are 180 degrees rotationally symmetrical, and the air ducts include an air inlet pipe, a straight pipe section 1, a straight pipe section 2, and an air outlet pipe. One end edge of the air inlet pipe is folded outward to form a retaining edge. One end of the air inlet pipe passes through the side wall of the air inlet chamber and is connected to the air inlet chamber. One end of the air inlet pipe is sealed and connected to the side wall of the air inlet chamber via a flange. The other end of the air inlet pipe is detachably connected to one end of the straight pipe section 2 via the straight pipe section 1. The other end of the straight pipe section 2 is snap-connected to one end of the air outlet pipe. The other end of the air outlet pipe is sealed and connected to the assembly port. The air outlet is located on the other end of the air outlet pipe. The filter is detachably installed in the air inlet pipe. The motor and the main control board are detachably connected in the straight pipe section 1. The heater is detachably connected in the straight pipe section 2. The segmented detachable connection of the air duct facilitates installation and disassembly.

[0014] Preferably, the other end of the second straight pipe section is located inside one end of the air outlet pipe, and the heater is located inside the other end of the straight pipe section. The air outlet pipe is provided with an arc-shaped bending structure, and one end of the air outlet pipe is evenly transitioned to its other end through the arc-shaped bending structure and then sealedly connected to the assembly port. The center of the other end of the air outlet pipe is recessed toward the inside of the air outlet pipe to form an air guide groove, and the bottom shape of the air guide groove is hemispherical, and the open end of the air guide groove forms an outwardly opened trumpet mouth, and the side wall of the air guide groove is provided with an arc surface, and the bottom side wall of the air guide groove is evenly transitioned to the trumpet mouth through the arc surface, and a plurality of air outlets are evenly distributed on the end face of the open end of the air guide groove along the circumference. The design of the arc-shaped bending structure on the air outlet pipe is conducive to reducing wind resistance, thereby reducing noise and energy loss during air supply; the structural design of the air guide groove is conducive to reducing wind resistance, thereby reducing noise; at the same time, the bottom shape of the air guide groove is hemispherical, and the structural design of the bell mouth is conducive to reducing water splashing into the air duct through the air outlet, and has a good waterproof effect; several air outlets are evenly distributed along the circumference on the open end face of the air guide groove, so that the hot air can be blown evenly to the human body, improving human comfort.

[0015] Preferably, an annular groove is provided on the outer side wall of the other end of the air outlet pipe, a sealing ring is sleeved in the annular groove, and the air outlet pipe is sealed with the assembly port via the sealing ring, which is beneficial to improving the waterproof effect of the joint between the assembly port and the air outlet pipe.

[0016] The cam is secured to the bottom of the cover so that the cam is secured to the bottom of the cover and the bottom of the cover are secured to the bottom of the cover so that the cam can be locked. The straight pipe section 1 is assembled by the upper cover and the lower cover, which is beneficial to the installation and disassembly of the main control board and the motor inside the straight pipe section 1; the lower cover is sealed with the upper cover by a sealing strip, which is beneficial to improving the waterproofness of the straight pipe section 1, thereby reducing the chance of the motor and the main control board getting wet and extending their service life; one side of the main control board matches the limit slot, and the other side corresponding to the main control board passes through the matching position of the other side corresponding to the opening end of the upper cover and the other side corresponding to the opening end of the lower cover and is located outside the cavity, making the positioning of the main control board simple and effective, the installation and disassembly convenient and quick, and the circuit connection convenient.

[0017] The beneficial effects of the utility model are: it is beneficial to the heat dissipation of the main control board and is beneficial to extending the service life of the main control board; it is beneficial to increasing the air volume while achieving the purpose of improving the drying speed; it is beneficial to improving the waterproof sealing of the dryer; it is beneficial to the hot air to be blown more concentratedly to the front and back sides of the human body, thereby improving the drying effect of the human body; the dryer is placed on the ground through the foot pad, which is beneficial to anti-slip on the one hand and vibration balance of the dryer on the other hand; it is beneficial to reduce noise; hot air can be blown evenly to the human body, thereby improving human comfort; the dryer performs human body sensing control through the human body sensor, which responds promptly and sensitively, and is convenient and quick to operate; the air inlet is designed at the front and back ends of the shell, which is beneficial to preventing impurities such as hair from entering the air duct; it is easy to install and disassemble; and it has a good waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is the main view of the utility model;

[0020] Figure 3 yes Figure 2 Cross-sectional view of AA;

[0021] Figure 4It is an exploded view of the utility model;

[0022] Figure 5 It is a structural diagram of the air duct;

[0023] Figure 6 This is an exploded view of the air duct.

[0024] In the figure: 1. Housing, 2. Circuit board 1, 3. Air duct, 4. Air inlet, 5. Assembly port, 6. Air outlet, 7. Filter, 8. Motor, 9. Main control board, 10. Heater, 11. Touch panel, 12. Power cord, 13. Boss, 14. Foot pad, 15. Circuit board 2, 16. Human body sensor, 17. Cavity, 18. Air inlet chamber, 19. Grille, 20. Air inlet duct, 21. Straight pipe section 1, 22. Straight pipe section 2, 23. Air outlet duct, 24. Side rib, 25. Air guide slot, 26. Bell mouth, 27. Curved surface, 28. Annular groove, 29. Upper cover, 30. Lower cover, 31. Flange, 32. Limiting slot, 33. Pressing strip. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 、 Figure 2 and Figure 3 In the described embodiment, a drying device is provided, which includes a shell 1, in which a circuit board 2 and two air ducts 3 are detachably connected. The air ducts 3 are located on the side of the circuit board 2, and air inlets 4 are provided at the front and rear ends of the shell 1. The two air inlets 4 are respectively connected to one end of the two air ducts 3. The shell 1 is provided with two assembly openings 5 that match the other ends of the two air ducts 3 one by one. The two assembly openings 5 are respectively located at the two ends of the same side wall of the shell 1. The other end of the air duct 3 is sealed with the corresponding assembly openings 5 and is provided with a plurality of air outlets 6. A filter 7, a motor 8, a main control board 9 and a heater 10 are respectively detachably connected to the air duct 3. The filter 7, the motor 8, the main control board 9 and the heater 10 are distributed in sequence from one end of the air duct 3 connected to the air inlet 4 to the other end thereof. The main control board 9 is electrically connected to the motor 8, the heater 10 and the circuit board 2 respectively. A touch panel 11 and a power cord 12, both electrically connected to the circuit board 2, are provided outside the shell 1. The touch panel 11 and the power cord 12 are both sealed with the shell 1.

[0027] Both ends of the top of the shell 1 protrude outward to form a boss 13, one end of the boss 13 is fixedly connected to the shell 1 and forms a whole, and the assembly port 5 is located at the other end of the boss 13, and the end face of the boss 13 where one assembly port 5 is located is inclined toward the boss 13 where the other assembly port 5 is located to form an inclined structure.

[0028] A plurality of foot pads 14 are fixed to the bottom of the housing 1 , and the foot pads 14 are evenly distributed along the edge of the housing 1 .

[0029] like Figure 2 and Figure 4 As shown, two circuit boards 15 are detachably connected in the shell 1. The two circuit boards 15 are respectively located on the left and right sides of the air duct 3. Human body sensors 16 electrically connected to the two circuit boards 15 are provided on the left and right sides of the shell 1. The circuit boards 15 are electrically connected to the main control board 9.

[0030] like Figure 3 and Figure 4 As shown, the housing 1 is provided with a cavity 17 and two air inlet chambers 18. The two air inlet chambers 18 are located at the front and rear ends of the housing 1, respectively, with the cavity 17 located between the two air inlet chambers 18. The air duct 3 is detachably connected to the cavity 17, and the air inlet 4 is located on one side of the air inlet chamber 18. One end of the air duct 3 passes through the other side of the air inlet chamber 18 and then communicates with the air inlet chamber 18. The portion of the air duct 3 that passes through the air inlet chamber 18 is sealed to the side wall of the air inlet chamber 18. One side of the air inlet chamber 18 where the air inlet 4 is located and the other side of the air inlet chamber 18 to which the air duct 3 is connected both arch outward to form an arc structure with the same arc center. A grille 19 is provided at the air inlet 4.

[0031] like Figure 3 and Figure 4 As shown, the two air ducts 3 are rotationally symmetrical by 180 degrees. The air duct 3 includes an air inlet pipe 20, a straight pipe section 1 21, a straight pipe section 22 and an air outlet pipe 23. The edge of one end of the air inlet pipe 20 is folded outward to form a retaining edge 24. One end of the air inlet pipe 20 passes through the side wall of the air inlet chamber 18 and is connected to the air inlet chamber 18. One end of the air inlet pipe 20 is sealed and connected to the side wall of the air inlet chamber 18 through a flange. The other end of the air inlet pipe 20 is detachably connected to one end of the straight pipe section 22 through the straight pipe section 1 21. The other end of the straight pipe section 22 is snap-connected to one end of the air outlet pipe 23. The other end of the air outlet pipe 23 is sealed and connected to the assembly port 5. The air outlet 6 is located on the other end of the air outlet pipe 23. The filter 7 is detachably installed in the air inlet pipe 20. The motor 8 and the main control board 9 are both detachably connected to the straight pipe section 1 21, and the heater 10 is detachably connected to the straight pipe section 2 22.

[0032] like Figure 3 、 Figure 4 and Figure 5As shown, the other end of the second straight pipe section 22 is located within one end of the air outlet pipe 23, and the heater 10 is located within the other end of the straight pipe section. The air outlet pipe 23 is provided with an arc-shaped bending structure. One end of the air outlet pipe 23 transitions uniformly to its other end through the arc-shaped bending structure and is then sealedly connected to the assembly opening 5. The center of the other end of the air outlet pipe 23 is recessed into the interior of the air outlet pipe 23 to form an air guide groove 25. The bottom of the air guide groove 25 is hemispherical in shape, and the open end of the air guide groove 25 forms an outwardly flared bell mouth 26. The side walls of the air guide groove 25 are provided with an arc-shaped surface 27. The bottom side walls of the air guide groove 25 transition uniformly to the bell mouth 26 through the arc-shaped surface 27. A plurality of air outlets 6 are evenly distributed along the circumferential direction on the open end surface of the air guide groove 25. An annular groove 28 is provided on the outer wall of the other end of the air outlet pipe 23. A sealing ring is sleeved in the annular groove 28. The air outlet pipe 23 is sealedly connected to the assembly opening 5 via the sealing ring.

[0033] like Figure 6 As shown, the straight pipe section 1 21 includes an upper cover 29 and a lower cover 30. Both sides of the open end of the upper cover 29 and the open end of the lower cover 30 are folded outward to form flange edges 31. The upper cover 29 is detachably connected to the lower cover 30 through the flange edges 31. A sealing groove is provided on the flange edge 31 of the upper cover 29, and a sealing strip is provided in the sealing groove. A pressure strip 33 matching the sealing groove is protruded on the flange edge 31 of the lower cover 30. The lower cover 30 is matched with the sealing groove through the pressure strip 33 and the sealing strip is pressed tightly to be sealed with the upper cover 29 to form a cavity. The motor 8 It can be detachably installed in the cavity, and a limiting slot 32 matching the main control board 9 is provided on one side of the opening end of the upper cover 29 and one side of the opening end of the lower cover 30. After one side of the main control board 9 matches the limiting slot 32, it is located in the cavity, and the other side corresponding to the main control board 9 passes through the matching position of the other side corresponding to the opening end of the upper cover 29 and the other side corresponding to the opening end of the lower cover 30, and is located outside the cavity and electrically connected to the circuit board 1 2 and the circuit board 2 15 respectively. The other side corresponding to the main control board 9 is sealed with the upper cover 29 and the lower cover 30 respectively.

[0034] The dryer model is JQ808. The user can control the start and stop of the dryer and adjust the temperature through the touch panel 11. When the user crosses the two sides of the dryer with his feet, the human body sensor 16 senses the presence of the human body and transmits a signal to the main control board 9, which controls the air supply of the dryer. Specifically, the main control board 9 controls the operation of the motor 8 and the heater 10 respectively. Driven by the motor 8, the natural wind is filtered by the filter 7 and enters the air duct 3 from the air inlet 4. After passing through the main control board 9, it is heated by the heater 10 and finally blows toward the human body through the air outlet 6. While drying the human body, it is beneficial for the natural cold wind to dissipate heat and remove water vapor from the main control board 9, which is beneficial for the heat dissipation of the main control board 9 and extends the service life of the main control board 9. Two air ducts 3 are arranged in the shell 1, and each air duct 3 is equipped with a filter 7, a motor 8, and a main The control panel 9 and the heater 10, through the above process, the heated air in the two air ducts 3 is blown toward the front and back sides of the human body from the air outlets 6 at the two assembly ports 5 respectively, which is beneficial to increase the air volume while achieving the purpose of improving the drying speed; the inclined setting of the end face of the boss 13 where the two assembly ports 5 are located means that the air outlet 6 is facing the direction of the human body, which is beneficial for the hot air to be blown toward the front and back sides of the human body more concentratedly, thereby improving the drying effect of the human body; the hot air is blown toward the human body evenly through several air outlets 6, which is beneficial to improving the comfort of the human body.

Claims

1. A drying device, characterized in that: The invention comprises a shell (1), wherein a circuit board (2) and two air ducts (3) are detachably connected in the shell (1), wherein the air ducts (3) are located on the side of the circuit board (2), and air inlets (4) are provided at both the front and rear ends of the shell (1), wherein the two air inlets (4) are connected one-to-one with one end of the two air ducts (3), and the shell (1) is provided with two assembly openings (5) which are matched one-to-one with the other ends of the two air ducts (3), wherein the two assembly openings (5) are located at the two ends of the same side wall of the shell (1), and the other ends of the air ducts (3) are sealed and connected with the corresponding assembly openings (5) and are provided with a plurality of air outlets (6). The air duct (3) is detachably connected to a filter (7), a motor (8), a main control board (9) and a heater (10). The filter (7), the motor (8), the main control board (9) and the heater (10) are sequentially distributed along the air duct (3) from one end thereof connected to the air inlet (4) to the other end thereof. The main control board (9) is electrically connected to the motor (8), the heater (10) and the circuit board (2) respectively. A touch panel (11) and a power line (12) are provided outside the housing (1), both of which are electrically connected to the circuit board (2). The touch panel (11) and the power line (12) are sealed and connected to the housing (1).

2. A drying device according to claim 1, characterized in that: Both ends of the top of the shell (1) protrude outward to form a boss (13), one end of the boss (13) is fixedly connected to the shell (1) and forms an integral body, and the assembly port (5) is located at the other end of the boss (13), and the end face of the boss (13) where one assembly port (5) is located is inclined toward the boss (13) where the other assembly port (5) is located, thereby forming an inclined structure.

3. The drying device according to claim 1, wherein: A plurality of foot pads (14) are fixed to the bottom of the shell (1), and the plurality of foot pads (14) are evenly distributed along the edge of the shell (1).

4. The drying device according to claim 1, wherein: Two circuit boards (15) are detachably connected in the shell (1), and the two circuit boards (15) are respectively located on the left and right sides of the air duct (3). Human body sensors (16) electrically connected to the two circuit boards (15) are provided on the left and right sides of the shell (1), and the circuit boards (15) are electrically connected to the main control board (9).

5. A drying device according to claim 4, characterized in that: The shell (1) is provided with a cavity (17) and two air inlet chambers (18). The two air inlet chambers (18) are respectively located at the front and rear ends of the shell (1). The cavity (17) is located between the two air inlet chambers (18). The air duct (3) is detachably connected to the cavity (17). The air inlet (4) is located on one side of the air inlet chamber (18). One end of the air duct (3) passes through the other side corresponding to the air inlet chamber (18) and is connected to the air inlet chamber (18). The portion of the air duct (3) that passes through the air inlet chamber (18) is sealed and connected to the side wall of the air inlet chamber (18).

6. A drying device according to claim 5, characterized in that: One side of the air inlet chamber (18) where the air inlet (4) is located and the other side of the air inlet chamber (18) to which the air duct (3) is connected are both arched outwards to form an arc structure with the same arc center, and a grille (19) is provided at the air inlet (4).

7. A drying device according to claim 5 or 6, characterized in that: The two air ducts (3) are 180-degree rotationally symmetrical. The air duct (3) includes an air inlet pipe (20), a straight pipe section 1 (21), a straight pipe section 2 (22), and an air outlet pipe (23). One end edge of the air inlet pipe (20) is folded outward to form a retaining edge (24). One end of the air inlet pipe (20) passes through the side wall of the air inlet chamber (18) and is connected to the air inlet chamber (18). One end of the air inlet pipe (20) is sealed with the side wall of the air inlet chamber (18) through the flange. The other end of the air inlet pipe (20) passes through the straight pipe section 1 (2 1) is detachably connected to one end of the second straight pipe section (22), the other end of the second straight pipe section (22) is snap-connected to one end of the air outlet pipe (23), the other end of the air outlet pipe (23) is sealedly connected to the assembly port (5), the air outlet (6) is located on the other end of the air outlet pipe (23), the filter (7) is detachably installed in the air inlet pipe (20), the motor (8) and the main control board (9) are both detachably connected to the first straight pipe section (21), and the heater (10) is detachably connected to the second straight pipe section (22).

8. The drying device according to claim 7, characterized in that: The other end of the second straight pipe section (22) is located inside one end of the air outlet pipe (23), and the heater (10) is located inside the other end of the straight pipe section. The air outlet pipe (23) is provided with an arc-shaped bending structure. One end of the air outlet pipe (23) is evenly transitioned to the other end thereof through the arc-shaped bending structure and is sealedly connected to the assembly port (5). The center of the other end of the air outlet pipe (23) is recessed into the air outlet pipe (23) to form an air guide groove (25). The bottom shape of the air guide groove (25) is hemispherical. The open end of the air guide groove (25) forms an outwardly opened bell mouth (26). The side wall of the air guide groove (25) is provided with an arc surface (27). The bottom side wall of the air guide groove (25) is evenly transitioned to the bell mouth (26) through the arc surface (27). A plurality of air outlets (6) are evenly distributed on the end surface of the open end of the air guide groove (25) along the circumferential direction.

9. The drying device according to claim 7, characterized in that: An annular groove (28) is provided on the outer side wall of the other end of the air outlet pipe (23), a sealing ring is sleeved in the annular groove (28), and the air outlet pipe (23) is sealedly connected to the assembly port (5) via the sealing ring.

10. The drying device according to claim 7, characterized in that: The straight pipe section 1 (21) includes an upper cover (29) and a lower cover (30), both sides of the opening end of the upper cover (29) and the opening end of the lower cover (30) are folded outward to form flange edges (31), and the upper cover (29) is detachably connected to the lower cover (30) through the flange edge (31), and a sealing groove is provided on the flange edge (31) of the upper cover (29), and a sealing strip is provided in the sealing groove. A pressure strip (33) matching the sealing groove is protruded from the flange edge (31) of the lower cover (30), and the lower cover (30) is sealed and connected to the upper cover (29) after the pressure strip (33) matches the sealing groove and presses the sealing strip to form a cavity. The motor (8) is detachably mounted in the cavity. A limit slot (32) matching the main control board (9) is provided on one side of the opening end of the upper cover (29) and one side of the opening end of the lower cover (30). One side of the main control board (9) is matched with the limit slot (32) and is located in the cavity. The other side corresponding to the main control board (9) passes through the matching position of the other side corresponding to the opening end of the upper cover (29) and the other side corresponding to the opening end of the lower cover (30) and is located outside the cavity and is electrically connected to the circuit board 1 (2) and the circuit board 2 (15) respectively. The other side corresponding to the main control board (9) is sealed and connected to the upper cover (29) and the lower cover (30) respectively.

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