A high-speed brushless air cylinder with distance measurement and automatic temperature adjustment

Abstract

This invention discloses a high-speed brushless air duct with distance measurement and automatic temperature adjustment, comprising a duct body, a brushless motor, and a flow divider. A housing is provided on the outside of the brushless motor, and several lugs for mounting the flow divider and housing are provided inside the duct body. An inlet baffle and an outlet baffle are respectively provided at both ends of the duct body. An impeller is mounted on the brushless motor, and the flow divider is located on the side where the impeller exits. The flow divider includes a hemispherical cover and a duct body. The hemispherical cover has a concave structure facing the impeller. This invention utilizes the brushless motor to drive the impeller to rotate at high speed to form a high-speed airflow. The relative positions of the flow divider and the flow guide can be controlled using a first and a second adjusting component, allowing airflow to exit from the inner outlet area and / or the outer outlet area. Simultaneously, the first and second heating components can be selected to operate or not operate, thereby generating airflow at different temperatures to meet different usage needs.

Description

Technical Field

[0001] This invention discloses a high-speed brushless air duct that can measure distance and automatically adjust temperature, belonging to the field of air duct technology. Background Technology

[0002] A ventilation duct is a primary air guiding device used for localized ventilation. It typically consists of a casing, a fan assembly, and a heating assembly. It utilizes the airflow generated by the fan assembly and controls the operation of the heating assembly according to usage needs, allowing natural wind or hot air to be blown out from one end of the duct. To increase the wind speed, the fan assembly usually uses a brushless motor to drive the impeller to rotate, thereby forming a high-speed airflow. However, the airflow type of existing ventilation ducts is relatively limited, and the range of choices is small. For example, the blowing range and wind speed at the end of the duct cannot be well selected and adjusted. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art and provide a high-speed brushless air duct that can measure distance and automatically adjust temperature.

[0004] This invention achieves the above-mentioned objective through the following technical solution: a high-speed brushless air duct with distance measurement and automatic temperature adjustment, comprising a duct body, a brushless motor, and a flow divider. A housing is provided on the outer side of the brushless motor. Several lugs for mounting the flow divider and housing are provided inside the duct body. An inlet baffle and an outlet baffle are respectively provided at both ends of the duct body. An impeller is mounted on the brushless motor. The flow divider is located on the side where the impeller exits the airflow. The flow divider includes a hemispherical cover and a cylindrical cover. The hemispherical cover has a concave structure facing the impeller. The end of the cylindrical cover away from the hemispherical cover abuts against the outlet baffle. The cylindrical cover and the hemispherical cover separate the outlet end of the duct body into an inner outlet area and an outer outlet area. The hemispherical cover is further provided with a plurality of arrayed first air guide holes and second air guide holes. The first air guide holes are connected to the inner air outlet area, and the second air guide holes are connected to the outer air outlet area. The second air guide holes and the first air guide holes are offset at equal angles. A flow guide shroud is provided on the inner side of the hemispherical cover. The flow guide shroud is provided with a first adjustment component for controlling the airflow generated by the impeller to enter the inner air outlet area and / or the outer air outlet area. The inner air outlet area and the outer air outlet area are provided with a first heating component and a second heating component with the same structure. A temperature sensor is provided on the cylindrical cover for measuring the temperature of the inner air outlet area and the outer air outlet area. An infrared ranging sensor is also provided at the end of the cylindrical cover near the air outlet baffle.

[0005] Preferably, the air guide is hemispherical in shape and has a plurality of third and fourth air guide holes distributed at equal angles. The number of the third and fourth air guide holes is the same as the number of the first and second air guide holes, and the third and fourth air guide holes are arranged side by side. The air guide is rotatable relative to the hemispherical cover.

[0006] Preferably, the first adjusting component includes a transmission rod and a positioning clip. One end of the transmission rod passes through the hemispherical cover and is fixedly connected to the air guide cover, and the other end extends to the air outlet baffle and is provided with a slot. The positioning clip includes a clamping sleeve and a first spring. The hemispherical cover is provided with a mounting post. One end of the first spring is located in the mounting post, and the other end is embedded in the clamping sleeve. The clamping sleeve cooperates with the inner hole of the mounting post, and the clamping sleeve has hemispherical polka dots. The air guide cover is provided with a plurality of grooves that cooperate with the polka dots. The minimum included angle between two adjacent grooves is equal to the included angle between the first air guide hole and the second air guide hole.

[0007] Preferably, the transmission rod and the air outlet baffle have a second adjusting component to control the gap between the air guide and the hemispherical cover. The second adjusting component includes a threaded sleeve, a second spring, and a limiting nut. The transmission rod is provided with a connecting part and a rotating part. The diameters of the connecting part and the rotating part are different from the diameter of the transmission rod. The connecting part is provided with a first threaded section and a second threaded section, and the connecting part passes through the hemispherical cover. The first threaded section is connected to the air guide. The limiting nut is installed on the second threaded section. The second spring is sleeved on the connecting part, and the two ends of the second spring abut against the hemispherical cover and the limiting nut, respectively. The threaded sleeve is threaded to the center of the air outlet baffle, and the threaded sleeve is provided with a hexagonal groove. The rotating part passes through the threaded sleeve.

[0008] Preferably, the hemispherical cover is provided with a limiting baffle to control the movement distance of the flow guide cover, the limiting baffle is fixedly connected to the hemispherical cover by bolts, and a flow guide cone is provided in the middle of the flow guide cover.

[0009] Preferably, a flow guide hood is provided in the outward air zone. The flow guide hood is located on the outside of the cylinder and has a plurality of spiral baffles arranged in an array inside it. The side of the spiral baffles away from the flow guide hood abuts against the outer wall of the cylinder.

[0010] Preferably, the first heating component includes a fixing ring, a mounting plate, and a heating wire. Multiple mounting plates are arranged at equal angles. The heating wire is fixed on the mounting plate. The fixing ring is provided with a terminal block electrically connected to the heating wire. The first heating component and the second heating component are arranged close to the duct.

[0011] Preferably, the cylindrical body is provided with a mounting part at the mounting location corresponding to the hemispherical cover, and the mounting part has a wire hole.

[0012] Preferably, the inner side of the housing is provided with a plurality of support plates for fixing the brushless motor, and there is a ventilation gap between two adjacent support plates. A socket is provided on the side of the brushless motor near the air inlet baffle.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By setting up a cylinder, brushless motor, impeller, flow divider, flow guide and first adjustment component, the brushless motor drives the impeller to rotate to generate high-speed airflow. The first adjustment component controls the connection between the first air guide hole and the third air guide hole or the second air guide hole and the fourth air guide hole, thereby forming a high-speed central airflow passing through the inner air outlet area or a high-speed ring airflow passing through the outer air outlet area. At the same time, the first heating component and the second heating component can heat the airflow to generate hot air. The temperature sensor can detect the air outlet temperature of the air outlet baffle. In addition, the infrared distance sensor controls the working status of the first heating component and the second heating component according to the measured distance, thereby adjusting the air outlet temperature in real time.

[0015] 2. By setting a second adjusting component and a guide hood, the second adjusting component can push the guide hood horizontally to one side, so that there is a gap between the guide hood and the hemispherical hood. In this way, airflow can pass through both the inner air outlet area and the outer air outlet area, which can simultaneously form a high-speed central airflow and a low-speed annular airflow, or simultaneously form a high-speed annular airflow and a low-speed central airflow. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a high-speed brushless air duct with distance measurement and automatic temperature adjustment according to the present invention.

[0017] Figure 2 This is a cross-sectional view of a high-speed brushless air duct with distance measurement and automatic temperature adjustment according to the present invention.

[0018] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the assembly structure of the flow divider, flow guide, second heating component and flow deflector in this invention;

[0020] Figure 5 This is a schematic diagram of the structure of the flow divider in this invention;

[0021] Figure 6 This is a schematic diagram of the structure of the flow guide in this invention;

[0022] Figure 7This is a schematic diagram of the transmission rod and the second adjusting component in this invention;

[0023] Figure 8 This is a schematic diagram of the positioning card in this invention;

[0024] Figure 9 This is a schematic diagram of the structure of the first heating component in this invention;

[0025] Figure 10 This is a schematic diagram of the drainage hood in this invention;

[0026] Figure 11 This is a schematic diagram of the brushless motor and housing in this invention;

[0027] Figure 12 This is a schematic diagram of the structure of the cylindrical body in this invention;

[0028] Reference numerals: 1. Cylinder; 2. First heating component; 3. Air outlet baffle; 4. Mounting part; 5. Infrared rangefinder; 6. Flow guide shroud; 7. Second heating component; 8. Limiting baffle; 9. Impeller; 10. Housing; 11. Air inlet baffle; 12. Brushless motor; 13. Flow guide shroud; 14. Flow divider shroud; 15. Temperature sensor; 16. Second adjusting component; 17. First adjusting component; 18. Positioning clip; 19. Second spring; 20. Transmission rod; 21. Limiting nut; 22. Mounting column; 23. Flow guide cone; 24. Hemispherical shroud; 25. Cylindrical shape Cover; 26. First air guide hole; 27. Second air guide hole; 28. Groove; 29. ​​Third air guide hole; 30. Fourth air guide hole; 31. First threaded section; 32. Connecting part; 33. Second threaded section; 34. Rotating part; 35. Slotted groove; 36. Threaded sleeve; 37. Hexagonal groove; 38. Dotted pattern; 39. Clamping sleeve; 40. First spring; 41. Mounting plate; 42. Heating wire; 43. Terminal block; 44. Fixing ring; 45. Spiral baffle; 46. Support plate; 47. Socket; 48. Lug; 49. Inner air outlet area; 50. Outer air outlet area. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1-12As shown, a high-speed brushless air duct with automatic temperature adjustment and distance measurement capability includes a duct body 1, a brushless motor 12, and a flow divider 14. A housing 10 is provided on the outer side of the brushless motor 12. Several lugs 48 for mounting the flow divider 14 and the housing 10 are provided inside the duct body 1. An inlet baffle 11 and an outlet baffle 3 are respectively provided at both ends of the duct body 1. An impeller 9 is mounted on the brushless motor 12. The flow divider 14 is located on the side where the impeller 9 exits the airflow. The flow divider 14 includes a hemispherical cover 24 and a cylindrical cover 25. The hemispherical cover 24 has a concave structure facing the impeller 9. The end of the cylindrical cover 25 away from the hemispherical cover 24 abuts against the outlet baffle 3. The cylindrical cover 25 and the hemispherical cover 24 divide the outlet end of the duct body 1 into an inner outlet area 49 and an outer outlet area 50. The 24 is also provided with a number of arrayed first air guide holes 26 and second air guide holes 27. The first air guide holes 26 are connected to the inner air outlet area 49, and the second air guide holes 27 are connected to the outer air outlet area 50. The second air guide holes 27 and the first air guide holes 26 are set at equal angles. The inner side of the hemispherical cover 24 is provided with a flow guide shroud 13. The flow guide shroud 13 is provided with a first adjustment component 17 for controlling the airflow generated by the impeller 9 to enter the inner air outlet area 49 and / or the outer air outlet area 50. The inner air outlet area 49 and the outer air outlet area 50 are provided with a first heating component 2 and a second heating component 7 with the same structure. The cylindrical cover 25 is provided with a temperature sensor 15 for measuring the temperature of the inner air outlet area 49 and the outer air outlet area 50. The end of the cylindrical cover 1 near the air outlet baffle 3 is also provided with an infrared ranging sensor 5.

[0031] The air deflector 13 has a hemispherical structure and is provided with several third air guide holes 29 and fourth air guide holes 30 distributed at equal angles. The number of third air guide holes 29 and fourth air guide holes 30 is the same as the number of first air guide holes 26 and second air guide holes 27, and the third air guide holes 29 and fourth air guide holes 30 are arranged side by side. The air deflector 13 is rotatable relative to the hemispherical cover 24. The first adjusting member 17 includes a transmission rod 20 and a positioning clip 18. One end of the transmission rod 20 passes through the hemispherical cover 24 and is fixedly connected to the air deflector 13, and the other end extends to the air outlet baffle 3 and is provided with a slot 35. The positioning clip 18 includes a clamping sleeve 39 and a first spring 40. The hemispherical cover 24 is provided with a mounting post 22. One end of the first spring 40 is located in the mounting post 22, and the other end is embedded in the mounting post 22. Inside the clamping sleeve 39, the clamping sleeve 39 mates with the inner hole of the mounting post 22, and the clamping sleeve 39 has a hemispherical dot 38. The air guide shroud 13 is provided with a plurality of grooves 28 that mate with the dot 38. The minimum included angle between two adjacent grooves 28 is equal to the included angle between the first air guide hole 26 and the second air guide hole 27. The force applied by the first spring 40 to the clamping sleeve 39 causes the dot 38 to mate with the groove 28, thereby positioning the relative position of the air guide shroud 13 and the hemispherical shroud 24. The position of the air guide shroud 13 can be changed by using the transmission rod 20, so that the first air guide hole 26 and the third air guide hole 29 are connected or the second air guide hole 27 and the fourth air guide hole 30 are connected. This allows the airflow to enter the inner air outlet area 49 or the outer air outlet area 50 separately, thereby forming a high-speed central airflow or a high-speed annular airflow.

[0032] A second adjusting component 16 is provided between the transmission rod 20 and the air outlet baffle 3 to control the gap between the air guide shroud 13 and the hemispherical cover 24. The second adjusting component 16 includes a threaded sleeve 36, a second spring 19, and a limiting nut 21. The transmission rod 20 is provided with a connecting part 32 and a rotating part 34. The diameters of the connecting part 32 and the rotating part 34 are different from the diameter of the transmission rod 20. The connecting part 32 is provided with a first threaded section 31 and a second threaded section 33, and the connecting part 32 passes through the hemispherical cover 24. The first threaded section 31 is connected to the air guide shroud 13, the limiting nut 21 is installed on the second threaded section 33, and the second spring 19 is sleeved on the connecting part 32. The second spring 19 has two ends that abut against the hemispherical cover 24 and the limiting nut 21, respectively. The threaded sleeve 36 is threadedly connected to the center of the air outlet baffle 3, and the threaded sleeve 36 is provided with a hexagonal groove 37. The rotating part 34 passes through the threaded sleeve 36. When only the outer air outlet 50 or the inner air outlet 49 needs to outlet air, the guide shroud 13 abuts against the hemispherical cover 24 under the action of the second spring 19. The concave structure of both can reduce the wind resistance of the airflow and allow the airflow to pass smoothly through the first air guide hole 26 or the second air guide hole 27. When it is necessary for the outer air outlet 50 and the inner air outlet 49 to outlet air at the same time, the threaded sleeve 36 is rotated to make it One end protrudes from the surface of the air outlet baffle 3. Since the rotating part 34 and the threaded sleeve 36 are rotatably connected, the transmission rod 20 will not rotate with the threaded sleeve 36. The threaded sleeve 36 can push the transmission rod 20 and the guide shroud 13 to move horizontally towards the impeller 9. In this way, a gap is formed between the guide shroud 13 and the hemispherical cover 24. The airflow can pass through the gap and pass through the first air guide hole 26 or the second air guide hole 27. In this way, the airflow in the inner air outlet area 49 and the outer air outlet area 50 can be generated simultaneously. When the first air guide hole 26 and the third air guide hole 29 are directly opposite each other, and the second air guide hole 27 and the fourth air guide hole 30 are offset, the airflow... The airflow encounters less resistance when entering the inner air outlet zone 49, but greater resistance when entering the outer air outlet zone 50. Therefore, it can simultaneously form a high-speed central airflow and a low-speed annular airflow. When the first air guide hole 26 and the third air guide hole 29 are staggered, and the second air guide hole 27 and the fourth air guide hole 30 are directly opposite each other, the airflow encounters greater resistance when entering the inner air outlet zone 49, but less resistance when entering the outer air outlet zone 50. Therefore, it can simultaneously form a low-speed central airflow and a high-speed annular airflow. With the operation or non-operation of the first heating component 2 and the second heating component 7, a variety of selectable airflows can be generated, and the appropriate temperature airflow can be selected according to actual needs.

[0033] A limiting baffle 8 is provided on the hemispherical cover 24 to control the movement distance of the guide cover 13. The limiting baffle 8 is fixedly connected to the hemispherical cover 24 by bolts. When the nut sleeve pushes the transmission rod 20 and the guide cover 13 to move, the limiting baffle 8 can control the movement distance of the guide cover 13. While ensuring that there is a maximum gap between the guide cover 13 and the hemispherical cover 24, the first spring 40 and the clamping sleeve 39 cannot be disengaged from the mounting column 22. At this time, airflow passes through both the outgoing air zone 49 and the inner air zone 50. A guide cone 23 is provided in the middle of the guide cover 13. The brushless motor 12 drives the impeller 9 to generate high-speed airflow. The airflow in the center blows on the guide cone 23 and flows towards the third air guide hole 29 and the fourth air guide hole 30. This can play a role in diverting the flow and thus reducing wind resistance.

[0034] An airflow guide 6 is installed in the outgoing airflow zone 50. The airflow guide 6 is located on the outside of the cylinder 1, and several arrayed spiral baffles 45 are installed inside it. The side of the spiral baffles 45 away from the airflow guide 6 is in contact with the outer wall of the cylinder 1. When the airflow enters the outgoing airflow zone 50, because there is a certain distance between the airflow guide 6 and the hemispherical cover 24, the airflow can enter the space between the spiral baffles 45 evenly. Under the guidance of the spiral baffles 45, an annular spiral airflow can be formed that passes through the air outlet baffle 3.

[0035] The first heating component 2 includes a fixing ring 44, a mounting plate 41, and a heating wire 42. Multiple mounting plates 41 are arranged at equal angles. The heating wire 42 is fixed on the mounting plate 41. The fixing ring 44 is provided with a terminal 43 that is electrically connected to the heating wire 42. The first heating component 2 and the second heating component 7 are arranged close to the diverter 14. The terminal 43 can be connected to wires. When the first heating component 2 and the second heating component 7 are working, the temperature of the heating wire 42 rises. When the airflow passes through the heating wire 42, the air is heated, thereby generating hot air. The overall structure and principle are existing technologies and will not be described in detail.

[0036] The cylindrical body 1 is provided with a mounting part 4 at the mounting position corresponding to the hemispherical cover 24. The mounting part 4 has a wire hole, which can facilitate the arrangement of multiple wires toward both sides of the diverter cover 14 to facilitate the connection of the brushless motor 12, the first heating component 2, the second heating component 7, the temperature sensor 15 and the infrared rangefinder 5.

[0037] The inner side of the housing 10 is provided with multiple support plates 46 for fixing the brushless motor 12. There is a ventilation gap between two adjacent support plates 46. When the brushless motor 12 drives the impeller 9 to rotate, it will generate a high-speed airflow, which will create a negative pressure inside the cylinder 1. External air can enter the cylinder 1 through the air inlet baffle 11 and pass through the ventilation gap. In this way, the brushless motor 12 can be cooled and dissipated during operation, so that it can be kept at a low temperature during operation. A socket 47 is provided on the side of the brushless motor 12 near the air inlet baffle 11. The socket 47 can be used to easily connect the wires to external power components.

[0038] Working principle: The brushless motor 12 drives the impeller 9 to rotate at high speed, thereby generating a high-speed airflow into the guide shroud 13. The drive rod 20 can be rotated via the slot 35, causing the guide shroud 13 to rotate at a certain angle relative to the hemispherical shroud 24. When the first air guide hole 26 is connected to the third air guide hole 29, but the second air guide hole 27 is not connected to the fourth air guide hole 30, all the airflow enters the inner air outlet zone 49, causing a high-speed central airflow to blow out from one end of the cylinder 1. When the second air guide hole 27 is connected to the fourth air guide hole 30, but the first air guide hole 26 is not connected to the third air guide hole 29, all the airflow enters the outer air outlet zone 50, causing a high-speed annular airflow to blow out from one end of the cylinder 1. To ensure that both the inner air outlet zone 49 and the outer air outlet zone 50 are traversed by airflow, the rotation... The threaded sleeve 36 allows the transmission rod 20 and the guide shroud 13 to move horizontally toward the impeller 9, creating a gap between the guide shroud 13 and the hemispherical cover 24. This allows the airflow to pass through the first air guide hole 26 and the second air guide hole 27 simultaneously, thus creating airflow in both the inner air outlet area 49 and the outer air outlet area 50. The brushless motor 12 drives the impeller 9 to generate high-speed airflow that can directly pass through the third air guide hole 29 and the first air guide hole 26, or directly through the fourth air guide hole 30 and the second air guide hole 27. In this way, the inner air outlet area 49 and the outer air outlet area 50 form airflows with different wind speeds. Furthermore, the first heating component 2 and the second heating component 7 can selectively heat the airflow, thus creating a variety of selectable airflows to meet different usage needs.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style 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.

Claims

1. A high-speed brushless air duct with distance-measuring and automatic temperature adjustment, comprising a duct body (1), a brushless motor (12), and a diffuser (14), characterized in that, The brushless motor (12) is provided with a housing (10) on its outer side. The cylindrical body (1) has several lugs (48) for mounting the flow divider (14) and the housing (10). The cylindrical body (1) has an inlet baffle (11) and an outlet baffle (3) at its two ends. An impeller (9) is mounted on the brushless motor (12). The flow divider (14) is located on the side where the impeller (9) exits the airflow. The flow divider (14) includes a hemispherical cover (…). 24) and a cylindrical cover (25), the hemispherical cover (24) having a concave structure facing the impeller (9), the end of the cylindrical cover (25) away from the hemispherical cover (24) abutting against the air outlet baffle (3), and the cylindrical cover (25) and the hemispherical cover (24) dividing the air outlet end of the cylindrical cover (25) into an inner air outlet area (49) and an outer air outlet area (50), the hemispherical cover (24) also having a number of arrayed first A first air guide hole (26) and a second air guide hole (27) are provided. The first air guide hole (26) is connected to the inner air outlet area (49), and the second air guide hole (27) is connected to the outer air outlet area (50). The second air guide hole (27) and the first air guide hole (26) are offset at equal angles. A flow guide shroud (13) is provided on the inner side of the hemispherical cover (24). The flow guide shroud (13) is provided with a function to control the airflow generated by the impeller (9) to enter the inner air outlet area (49). 9) or / and the first adjustment component (17) of the outgoing air zone (50), the inner air zone (49) and the outgoing air zone (50) are provided with a first heating component (2) and a second heating component (7) with the same structure, the cylindrical cover (25) is provided with a temperature sensor (15) for measuring the temperature of the inner air zone (49) and the outgoing air zone (50), and an infrared ranging sensor (5) is also provided at one end of the cylindrical body (1) near the air outlet baffle (3); The air guide (13) has a hemispherical structure and is provided with a number of third air guide holes (29) and fourth air guide holes (30) distributed at equal angles. The number of the third air guide holes (29) and fourth air guide holes (30) is the same as the number of the first air guide holes (26) and second air guide holes (27). The third air guide holes (29) and fourth air guide holes (30) are arranged side by side. The air guide (13) is rotatable relative to the hemispherical cover (24). The first adjusting component (17) includes a transmission rod (20) and a positioning clip (18). One end of the transmission rod (20) passes through the hemispherical cover (24) and is fixedly connected to the guide cover (13), and the other end extends to the air outlet baffle (3) and is provided with a slot (35). The positioning clip (18) includes a clamping sleeve (39) and a first spring (40). The hemispherical cover (24) is provided with a mounting post (22), and the first spring (49) is provided with a mounting post (22). One end of the 0) is located inside the mounting post (22), and the other end is embedded in the clamping sleeve (39). The clamping sleeve (39) is engaged with the inner hole of the mounting post (22), and the clamping sleeve (39) has a hemispherical dot (38). The flow guide (13) is provided with a plurality of grooves (28) that engage with the dot (38). The minimum included angle between two adjacent grooves (28) is equal to the included angle between the first air guide hole (26) and the second air guide hole (27).

2. The high-speed brushless air duct with distance-measuring and automatic temperature adjustment according to claim 1, characterized in that, The transmission rod (20) and the air outlet baffle (3) have a second adjusting component (16) for controlling the gap between the air guide shroud (13) and the hemispherical cover (24). The second adjusting component (16) includes a threaded sleeve (36), a second spring (19), and a limiting nut (21). The transmission rod (20) is provided with a connecting part (32) and a rotating part (34). The diameters of the connecting part (32) and the rotating part (34) are different from the diameter of the transmission rod (20). The connecting part (32) is provided with a first threaded section (31) and a second threaded section (33). The connecting part (32) is set through the hemispherical cover (24), the first threaded section (31) is connected to the guide cover (13), the limiting nut (21) is installed on the second threaded section (33), the second spring (19) is sleeved on the connecting part (32), and the two ends of the second spring (19) abut against the hemispherical cover (24) and the limiting nut (21) respectively. The threaded sleeve (36) is threadedly connected to the center of the air outlet baffle (3), and the threaded sleeve (36) is provided with a hexagonal groove (37). The rotating part (34) is set through the threaded sleeve (36).

3. A high-speed brushless air duct with distance-measuring and automatic temperature adjustment according to claim 2, characterized in that, The hemispherical cover (24) is provided with a limiting baffle (8) to control the movement distance of the flow guide (13). The limiting baffle (8) is fixedly connected to the hemispherical cover (24) by bolts. The flow guide (13) is provided with a flow guide cone (23) in the middle.

4. A high-speed brushless air duct with distance-measuring and automatic temperature adjustment according to claim 3, characterized in that, A hood (6) is provided in the outward air zone (50). The hood (6) is located on the outside of the cylinder (1), and a number of spiral baffles (45) are arranged in an array inside it. The side of the spiral baffles (45) away from the hood (6) abuts against the outer wall of the cylinder (1).

5. A high-speed brushless air duct with distance-measuring and automatic temperature adjustment according to claim 4, characterized in that, The first heating component (2) includes a fixing ring (44), a mounting plate (41) and a heating wire (42). Multiple mounting plates (41) are arranged at equal angles. The heating wire (42) is fixed on the mounting plate (41). The fixing ring (44) is provided with a terminal (43) that is electrically connected to the heating wire (42). The first heating component (2) and the second heating component (7) are arranged close to the duct (14).

6. A high-speed brushless air duct with distance-measuring and automatic temperature adjustment according to claim 5, characterized in that, The cylindrical body (1) is provided with a mounting part (4) at the mounting location of the hemispherical cover (24), and the mounting part (4) has a wire hole.

7. A high-speed brushless air duct with distance-measuring and automatic temperature adjustment according to claim 6, characterized in that, The inner side of the housing (10) is provided with a plurality of support plates (46) for fixing the brushless motor (12), and there is a ventilation gap between two adjacent support plates (46). A plug socket (47) is provided on the side of the brushless motor (12) near the air inlet baffle (11).

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