Air guide structure and air blowing equipment

Abstract

The utility model relates to the technical field of blowing equipment, in particular to an air guide structure and blowing equipment, which comprises a first barrel, a second barrel and a partition component, a first air duct is formed in the first barrel, and the second barrel is fixedly connected in the first air duct; a second air duct is formed in the second barrel, a motor and fan blades are arranged in the second air duct, and the fan blades are fixedly connected to an output shaft of the motor, so that air is driven to penetrate through the second air duct under the driving of operation of the motor; the inner side end of the separation assembly abuts against the outer side wall of the second barrel, the outer side end of the separation assembly abuts against the inner side wall of the first barrel, and the first air duct is separated to form an outer air duct and an inner air duct; the partition assembly guides air through the outer duct into the second duct. In conclusion, the air blowing equipment can be operated and used for a long time, the temperature of an internal control element can be reduced, heat accumulation of the internal control element is prevented, and the service life of the whole air blowing equipment is prolonged. And the keys are optimized, so that the use experience is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of blower equipment, and in particular to an air guiding structure and blower equipment. Background Technology

[0002] Hair dryers are primarily used for drying and styling hair, but they can also be used in laboratories, physiotherapy rooms, industrial production, and art for localized drying, heating, and therapeutic purposes. Although there are many types of hair dryers, their structures are largely similar, typically consisting of a housing, handle, motor, fan blades, heating element, air deflector, switch, and power cord.

[0003] Traditional hair dryers operate by having air enter through the air inlet at the rear of the casing, being heated by the motor, fan blades, and heating element before being expelled through the air outlet at the front. To control the motor, heating element, and adjust the voltage and current, a control component is usually installed inside the handle. However, in scenarios requiring prolonged use, heat can easily accumulate inside the control component, leading to overheating and affecting normal operation. This can even burn out the electronic components, shortening the lifespan of the hair dryer.

[0004] For example, Chinese patent document CN219911215U discloses a hair dryer, which includes: a hair dryer body, which includes an outer shell and an air guide tube disposed in the outer shell. The air guide tube has a first accommodating cavity and a second accommodating cavity that communicate with each other. The two ends of the outer shell are respectively provided with an air inlet and an air outlet that communicate with the first accommodating cavity and the second accommodating cavity. A blowing component and an air guide component are respectively disposed in the first accommodating cavity and the second accommodating cavity; a handle disposed on the outer side wall of the outer shell; and a control component disposed on the handle; wherein, the cross-sectional dimension of the air guide component near the air outlet is larger than the cross-sectional dimension of the end away from the air outlet, and the air guide component is disposed on the axis of the second accommodating cavity so that the airflow in the second accommodating cavity flows towards the outside of the air guide component.

[0005] Therefore, it is necessary to improve existing hair dryers so that they can reduce the temperature of the control components, prevent heat buildup, and extend their service life. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] This utility model provides an air guiding structure, including a first cylinder, a second cylinder, and a separating component. The first cylinder is hollow inside and has openings at both ends to form a first air duct. The second cylinder is fixedly connected to the first air duct. The second cylinder is also hollow inside and has openings at both ends to form a second air duct. A motor and a fan blade are installed in the second air duct. The motor is fixedly connected to the inner wall of the second cylinder, and the fan blade is fixedly connected to the output shaft of the motor, so that air is driven through the second air duct by the operation of the motor. The inner end of the separating component abuts against the outer wall of the second cylinder, and its outer end abuts against the inner wall of the first cylinder, thereby separating the first air duct to form an outer air duct and an inner air duct. The separating component guides air through the outer air duct into the second air duct.

[0008] As a further embodiment of this utility model: the separating component is disposed at the air inlet end of the second cylinder, and the motor drives the fan blades to rotate, thereby generating negative pressure at the air inlet end of the second cylinder, so that a negative pressure state is formed between the separating component and the outer air duct; the separating component is provided with an air guide hole, which is connected to the inner air duct and the outer air duct, so that the air in the inner air duct passes through the air guide hole and enters the outer air duct under negative pressure, and is thus driven by the fan blades to pass through the second air duct.

[0009] As a further embodiment of this utility model: the separating component is provided with a separating plate, the inner end of the separating plate is fixed to the air inlet end of the second cylinder, and its outer end extends to the air inlet end of the first cylinder by a certain length, thereby forming a trumpet-shaped air guiding structure.

[0010] As a further embodiment of this utility model: the separating component is further provided with a separating seat, one side of which is fixed to the outer end of the separating plate, and the other side of which abuts against the inner wall of the first cylinder and forms a sealed state.

[0011] This utility model also provides a blower device, including the above-mentioned air guiding structure, and also including a blower body and a handle portion fixedly connected to each other. The air guiding structure is disposed on the body, and the handle portion is provided with a third cylinder. The third cylinder is hollow inside and has openings at both ends, thereby forming a third air duct. The third air duct is connected to the inner air duct of the first cylinder, so that air passes through the third air duct, the inner air duct, the air guiding hole and the outer air duct in sequence, and enters the second air duct.

[0012] As a further embodiment of this utility model: the main body is provided with a first air inlet at the position corresponding to the outer air duct of the first cylinder, so that air flows into the outer air duct through the first air inlet; the main body is provided with an air outlet at the position corresponding to the air outlet of the second cylinder, so that air is blown out from the air outlet through the second air duct; the handle part is provided with a second air inlet at the end away from the main body, so that air flows into the third air duct through the second air inlet.

[0013] As a further embodiment of this utility model: the first air inlet is provided with a first dustproof net, and the second air inlet is provided with a second dustproof net.

[0014] As a further embodiment of this utility model: the handle is provided with a control element, which is installed inside the third cylinder and is thus cooled by the airflow passing through the third air duct.

[0015] As a further embodiment of this utility model: the handle is provided with a control button, which is slidably connected to the outer wall of the handle for switching control functions; the outer wall of the handle is provided with multiple gear grooves, the control button is provided with a deformation strip, one end of the deformation strip is fixed to the control button, and the other end forms a free end; the deformation strip is provided with a shift protrusion on one side corresponding to the gear groove, and the shift protrusion can be engaged into the gear groove, thereby cooperating with each other to form a locking structure.

[0016] As a further embodiment of this utility model: a deformation space is provided between the control button and the deformation strip, so that the deformation strip can be deformed to a certain extent under the drive of the shift protrusion and the gear groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. By setting an air guide structure inside the blower body, the negative pressure generated by the air guide structure allows air to pass through the third air duct, the inner air duct, the air guide hole and the outer air duct in sequence, and enter the second air duct. This removes the heat generated by the control components installed inside the third air duct, reduces its temperature, and thus extends its working time and improves the service life of the blower.

[0019] 2. By utilizing a specially designed air guiding structure, a first air duct and a second air duct can be formed. The first air duct is separated into an outer air duct and an inner air duct by a partition plate. Through the set air guide holes, the air in the inner air duct can pass through the air guide holes and enter the outer air duct. Then, it is driven by the rotation of the fan blades in the second air duct and discharged from the air outlet, thus forming a corresponding air flow in the inner air duct.

[0020] 3. To facilitate use, a corresponding locking structure can be set between the control button and the handle. By utilizing the cooperation between the deformation strip and the gear groove, the shifting operation of the control button can have a better feel and improve the user experience.

[0021] Therefore, with the above improvements, this utility model provides an air guiding structure and a blower, enabling the blower to operate for extended periods, reducing the temperature of internal control components, preventing heat buildup, and extending the overall lifespan of the blower. Furthermore, the button settings have been optimized to improve the user experience.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the blower body and handle of this utility model;

[0025] Figure 2 This is a cross-sectional schematic diagram of the first and second cylinders of this utility model;

[0026] Figure 3 This is a cross-sectional schematic diagram of the external air duct and the internal air duct of this utility model;

[0027] Figure 4 This is a cross-sectional schematic diagram of the third cylinder of this utility model;

[0028] Figure 5 This is a cross-sectional schematic diagram of the wire hole of this utility model;

[0029] Figure 6 This is a schematic diagram of the control button and deformation bar of this utility model;

[0030] Figure 7 yes Figure 6 A magnified view of a portion of point A in the middle;

[0031] Figure 8 This is a schematic diagram of airflow during the working state of this utility model.

[0032] The reference numerals and names in the figure are as follows:

[0033] 10 First cylinder; 11 First air duct; 12 External air duct; 13 Internal air duct; 20 Second cylinder; 21 Second air duct; 22 Motor; 23 Fan blade; 24 Wire hole; 30 Separator assembly; 31 Air guide hole; 32 Separator plate; 33 Separator seat; 40 Blower body; 41 First air inlet; 42 First dustproof net; 43 Air outlet; 44 Nozzle; 45 Second air inlet; 46 Second dustproof net; 50 Handle part; 51 Gear groove; 52 Third cylinder; 53 Third air duct; 54 Control element; 55 Control button; 56 Deformation strip; 57 Gear shifting protrusion; 58 Deformation space; 60 Heating device. Detailed Implementation

[0034] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] Please see Figures 1 to 8 In this embodiment of the present invention, an air guiding structure includes a first cylinder 10, a second cylinder 20, and a separating component 30. The first cylinder 10 is hollow inside and has openings at both ends, thereby forming a first air duct 11. The second cylinder 20 is fixedly connected to the first air duct 11. The second cylinder 20 is also hollow inside and has openings at both ends, thereby forming a second air duct 21. A motor 22 and a fan blade 23 are provided inside the second air duct 21. The motor 22 is fixedly connected to the inner wall of the second cylinder 20, and the fan blade 23 is fixedly connected to the output shaft of the motor 22, thereby driving air through the second air duct 21 under the operation of the motor 22. The inner end of the separating component 30 abuts against the outer wall of the second cylinder 20, and its outer end abuts against the inner wall of the first cylinder 10, thereby separating the first air duct 11 to form an outer air duct 12 and an inner air duct 13. The separating component 30 guides air through the outer air duct 12 into the second air duct 21.

[0036] Specifically, when the blower is in use, the driving air typically enters from the first air inlet 41 at the rear of the blower body 40, is heated by the motor 22, fan blades 23 and heating device 60, and is then discharged from the air outlet 43 at the front of the body, thereby achieving a high-speed airflow and blowing effect. In order to guide the air in the first air inlet 41, a separator component 30 can be set and sealed between the first cylinder 10 and the second cylinder 20, dividing the first air duct 11 into an inner air duct 13 and an outer air duct 12. The air mainly enters from the first air inlet 41, passes through the outer air duct 12, and enters the second air duct 21 for discharge.

[0037] Secondly, since the high-speed motor 22 can drive the fan blades 23 to rotate at high speed, a certain negative pressure space is generated at the air inlet of the second cylinder 20, allowing air to enter the negative pressure space under atmospheric pressure, thus forming a corresponding airflow. Understandably, due to the arrangement of the partition component 30, the side facing the first air inlet 41 is also in a negative pressure space, causing the air on its surface to be driven into the second air duct 21. Therefore, corresponding air guide holes 31 can be provided on the partition component 30, allowing the air inside the inner air duct 13 to pass through the air guide holes 31 and enter the outer air duct 12 under the drive of negative pressure, and ultimately be driven to flow into the second air duct 21.

[0038] For example, two air guide holes 31 can be provided at the top and bottom of the partition plate 32, and the inner air duct 13 can be connected to the third air duct 53 of the handle part 50. This allows air from the third air duct 53 to enter the inner air duct 13 and, driven by the negative pressure at the four air guide holes 31, flow into the outer air duct 12 and be drawn into the second air duct 21, forming a corresponding airflow. To ensure air circulation inside the handle part 50, a second air inlet 45 needs to be provided. As the air flows through the second air inlet 45 into the inner air duct 13, it can dissipate heat from the control components 54 installed inside the handle part 50. In other words, as the airflow passes through the third air duct 53, it can carry away the heat from the corresponding electronic components, lowering their temperature and achieving a cooling effect.

[0039] like Figure 2 and Figure 3 As shown, preferably, the separating component 30 is disposed at the air inlet end of the second cylinder 20, and the motor 22 drives the fan blade 23 to rotate, thereby generating negative pressure at the air inlet end of the second cylinder 20, so that a negative pressure state is formed between the separating component 30 and the outer air duct 12; the separating component 30 is provided with an air guide hole 31, which is connected to the inner air duct 13 and the outer air duct 12, so that the air in the inner air duct 13 passes through the air guide hole 31 and enters the negative pressure state of the outer air duct 12, and is thus driven by the fan blade 23 to pass through the second air duct 21.

[0040] Specifically, because the motor 22 drives the fan blades 23 to rotate at high speed, a negative pressure area is formed at the air inlet of the second air duct 21. This causes external air to enter the negative pressure area and be forced into the second air duct 21, forming a high-speed airflow that is then blown out from the air outlet of the second air duct 21, thus forming the air blown out by the blower. Due to the presence of the partition component 30, the negative pressure area is mainly formed in the area between the partition component 30 and the outer air duct 12, allowing air to quickly enter this negative pressure area. In particular, on the side of the partition component 30 facing the outer air duct 12, a corresponding negative pressure area is also formed along its sidewall. The air guide holes 31 opened on its sidewall allow air from the inner air duct 13 to pass through the air guide holes 31 under the influence of negative pressure and enter the outer air duct 12, and then enter the second air duct 21. This creates a corresponding airflow inside the inner air duct 13, allowing air to continuously enter the second air duct 21 from the inner air duct 13.

[0041] like Figures 1 to 3As shown, preferably, the separating assembly 30 is provided with a separating plate 32. The inner end of the separating plate 32 is fixed to the air inlet end of the second cylinder 20, and its outer end extends a certain length toward the air inlet end of the first cylinder 10, thereby forming a trumpet-shaped air guiding structure. The separating assembly 30 is also provided with a separating seat 33. One side of the separating seat 33 is fixed to the outer end of the separating plate 32, and its other side abuts against the inner wall of the first cylinder 10, forming a sealed state.

[0042] Specifically, to better guide airflow, it is preferable to design the partition plate 32 as a trumpet shape, allowing airflow to easily pass through its sidewalls and generating a good negative pressure effect, thereby facilitating the air in the inner air duct 13 to pass through the air guide hole 31 and enter the outer air duct 12. The inner end of the partition plate 32 can form a sealed state with the air inlet end of the second cylinder 20; preferably, the inner end of the partition plate 32 is integrally formed with the air inlet end of the second cylinder 20.

[0043] Secondly, for ease of installation, a corresponding partition seat 33 can be provided. A snap-fit ​​structure, as used in the prior art, can be provided between the partition seat 33 and the partition plate 32, allowing the partition seat 33 to be fastened to the partition plate 32. A corresponding fixing structure can also be provided between the partition seat 33 and the inner wall of the first cylinder 10 to fix the partition seat 33 in place. Preferably, the partition seat 33 and the first cylinder 10 can also be provided with a sealed connection to prevent air from passing through.

[0044] In addition, for aesthetic purposes, LED lights can be installed at the air inlet of the blower body 40. The corresponding mounting brackets can be installed through the partition seat 33 for mounting the lights.

[0045] like Figure 1 and Figure 2 As shown, preferably, this utility model also provides a blower device, including a blower body 40 and a handle portion 50 fixedly connected to each other. The body has an air guiding structure, and the handle portion 50 has a third cylinder 52. The third cylinder 52 is hollow inside and has openings at both ends, thereby forming a third air duct 53. The third air duct 53 is connected to the inner air duct 13 of the first cylinder 10, so that air passes through the third air duct 53, the inner air duct 13, the air guiding hole 31 and the outer air duct 12 in sequence, and enters the second air duct 21. The body has a first air inlet 41 at the position corresponding to the outer air duct 12 of the first cylinder 10, so that air flows into the outer air duct 12 through the first air inlet 41; the body has an air outlet 43 at the position corresponding to the air outlet end of the second cylinder 20, so that air passes through the second air duct 21 and is blown out from the air outlet 43; the handle portion 50 has a second air inlet 45 at the end away from the body, so that air flows into the third air duct 53 through the second air inlet 45.

[0046] Specifically, driven by the operation of motor 22, the fan blades 23 rotate at high speed, causing air to enter the second air duct 21 under negative pressure and be blown out from the air outlet 43. Due to the guiding effect of partition plate 32, most of the air enters the second air duct 21 through the first air inlet 41.

[0047] Secondly, because the partition plate 32 is also equipped with corresponding air guides, the negative pressure at the air guides allows the air in the inner air duct 13 to pass through the air guides and flow into the second air duct 21 for blowing out. Furthermore, by providing a corresponding second air inlet 45 at the free end of the handle 50, air can enter through the second air inlet 45, pass through the third air duct 53, and flow into the inner air duct 13, thereby achieving the effect of cooling the electronic components inside the third cylinder 52.

[0048] like Figure 4 and Figure 5 As shown, preferably, the first air inlet 41 is provided with a first dustproof net 42, and the second air inlet 45 is provided with a second dustproof net 46.

[0049] Specifically, to prevent dust or foreign objects from passing through the air inlet and entering the second air duct 21, thus affecting the fan blades 23 or the heating device 60, a corresponding dust filter can be installed. Additionally, since the motor 22 needs to enter the corresponding electrical wires from the control element 54 of the third cylinder 52, corresponding wire holes 24 can be opened on the side wall of the second cylinder 20, and corresponding sealing gaskets (not shown in the figure) can be installed at the wire holes 24. This prevents air from the inner air duct 13 from entering the second air duct 21 through the wire holes 24, thus avoiding affecting the negative pressure state within the inner air duct 13.

[0050] like Figure 2 As shown, preferably, the main body is further provided with a heating device 60, which is fixedly connected to the inside of the second cylinder 20 and heats the air in the second air duct 21 so that the air outlet 43 blows out a hot airflow with a certain temperature. The main body is also provided with a nozzle 44, one end of which is detachably fixed to the side wall of the air outlet 43, and the other end of which forms a free end.

[0051] Specifically, to enhance the usability and comfort of the hair dryer, a heating element 60 can be installed to heat the blown air, producing hot air. Alternatively, a nozzle 44 can be installed to guide the blown air, changing its direction and enabling more blowing functions. The nozzle 44 has a double-layer structure to insulate the hot airflow, reducing the temperature of the nozzle 44's outer casing and improving the user experience. Understandably, a tail cap can also be installed at the air inlet end of the main body to cover the first air inlet 41 and prevent debris from being drawn in.

[0052] like Figure 2As shown, preferably, the handle portion 50 is provided with a control element 54, which is installed inside the third cylinder 52 and is cooled by the airflow passing through the third air duct 53.

[0053] Specifically, the control element 54 includes electronic components required for the operation of the blower, such as circuit boards, transformer and rectifier components, control chips, and starting capacitors. Most of these electronic components generate heat during operation, especially the transformer and rectifier components and power chips, which generate relatively large amounts of heat. Prolonged use can easily lead to heat buildup, affecting the operation of the electronic components and even burning them out. Therefore, by setting up an air guide structure, some airflow can pass through the third air duct 53, thereby carrying away the heat from the control element 54 installed inside the third cylinder 52, reducing its operating temperature, and extending its service life.

[0054] like Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, preferably, the handle portion 50 is provided with a control button 55, which is slidably connected to the outer wall of the handle portion 50 to switch control functions; the outer wall of the handle portion 50 is provided with multiple gear slots 51, and the control button 55 is provided with a deformation strip 56. One end of the deformation strip 56 is fixed to the control button 55, and the other end forms a free end. The deformation strip 56 has a shift protrusion 57 on one side corresponding to the gear slot 51. The shift protrusion 57 can be engaged with the gear slot 51 to form a locking structure. A deformation space 58 is provided between the control button 55 and the deformation strip 56, so that the deformation strip 56 can undergo a certain degree of deformation under the drive of the shift protrusion 57 and the gear slot 51.

[0055] Specifically, the hair dryer can also be equipped with a power switch and a control button 55. The control button 55 can switch between different airflow levels or different airflow temperatures. To improve the user experience of the control button 55 during switching, a corresponding locking structure can be incorporated. The interaction between the level groove 51 and the level protrusion enhances the tactile feel of the control button 55 when pushing or pulling to change levels. Essentially, the control button 55 has three level grooves 51 in its structure, primarily to enhance the mechanical feel of the level settings.

[0056] Secondly, a deformation space 58 can be provided between the deformation strip 56 and the housing of the control button 55. Utilizing the elasticity of the deformation strip 56, it can undergo a certain deformation, thereby enabling the switching of the control button 55. Furthermore, the deformation space 58 can prevent wear on the deformation component, ensuring that it retains its mechanical push-pull feel even after prolonged use.

[0057] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. An air guiding structure, characterized in that, The system includes a first cylindrical body (10), a second cylindrical body (20), and a partition assembly (30). The first cylindrical body (10) is hollow inside and has openings at both ends, thus forming a first air duct (11). The second cylindrical body (20) is fixed inside the first air duct (11). The second cylindrical body (20) is also hollow inside and has openings at both ends, thus forming a second air duct (21). A motor (22) and a fan blade (23) are installed inside the second air duct (21). The motor (22) is fixed to the inner wall of the second cylindrical body (20). The fan blade (23) is fixed to the output shaft of the motor (22), thereby driving air through the second air duct (21) under the operation of the motor (22); the inner end of the separator (30) abuts against the outer wall of the second cylinder (20), and its outer end abuts against the inner wall of the first cylinder (10), thereby separating the first air duct (11) to form an outer air duct (12) and an inner air duct (13); the separator (30) guides air through the outer air duct (12) into the second air duct (21).

2. The air guiding structure according to claim 1, characterized in that, The partition component (30) is located at the air inlet of the second cylinder (20). The motor (22) drives the fan blade (23) to rotate, thereby generating negative pressure at the air inlet of the second cylinder (20), so that a negative pressure state is formed between the partition component (30) and the outer air duct (12). The partition component (30) is provided with an air guide hole (31), which is connected to the inner air duct (13) and the outer air duct (12), so that the air in the inner air duct (13) passes through the air guide hole (31) and enters the negative pressure state of the outer air duct (12), and is thus driven by the fan blade (23) to pass through the second air duct (21).

3. The air guiding structure according to claim 2, characterized in that, The separation component (30) is provided with a separation plate (32). The inner end of the separation plate (32) is fixed to the air inlet end of the second cylinder (20), and its outer end extends to the air inlet end of the first cylinder (10) for a certain length, thereby forming a trumpet-shaped air guiding structure.

4. The air guiding structure according to claim 3, characterized in that, The partition assembly (30) is also provided with a partition seat (33), one side of which is fixed to the outer end of the partition plate (32), and the other side of which abuts against the inner wall of the first cylinder (10) and forms a sealed state.

5. A blower device, characterized in that, The air guide structure includes any one of claims 1-4, and further includes a blower body (40) and a handle (50) fixedly connected to each other. The air guide structure is disposed on the body. The handle (50) is provided with a third cylinder (52). The third cylinder (52) is hollow inside and has openings at both ends, thereby forming a third air duct (53). The third air duct (53) is connected to the inner air duct (13) of the first cylinder (10), so that air passes through the third air duct (53), the inner air duct (13), the air guide hole (31) and the outer air duct (12) in sequence and enters the second air duct (21).

6. A blower device according to claim 5, characterized in that, The main body is provided with a first air inlet (41) at the position of the outer air duct (12) of the first cylinder (10), so that air flows into the outer air duct (12) through the first air inlet (41); the main body is provided with an air outlet (43) at the position of the air outlet end of the second cylinder (20), so that air is blown out from the air outlet (43) through the second air duct (21); the handle part (50) is provided with a second air inlet (45) at the end away from the main body, so that air flows into the third air duct (53) through the second air inlet (45).

7. A blower device according to claim 6, characterized in that, The first air inlet (41) is provided with a first dustproof net (42), and the second air inlet (45) is provided with a second dustproof net (46).

8. A blower device according to claim 5, characterized in that, The handle (50) is provided with a control element (54), which is installed inside the third cylinder (52) and is cooled by the airflow passing through the third air duct (53).

9. A blower device according to claim 5, characterized in that, The handle (50) is provided with a control button (55), which is slidably connected to the outer wall of the handle (50) for switching control functions; the outer wall of the handle (50) is provided with multiple gear grooves (51), the control button (55) is provided with a deformation strip (56), one end of the deformation strip (56) is fixed to the control button (55), and the other end forms a free end. The deformation strip (56) is provided with a shift protrusion (57) on one side corresponding to the gear groove (51), and the shift protrusion (57) can be inserted into the gear groove (51) to cooperate with each other and form a locking structure.

10. A blower device according to claim 9, characterized in that, A deformation space (58) is provided between the control button (55) and the deformation bar (56), so that the deformation bar (56) can be deformed to a certain extent under the drive of the shift protrusion (57) and the gear groove (51).

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