A hair dryer

Abstract

The utility model relates to a kind of blowing mechanism, including power supply, driving device, airflow device and shell assembly, shell assembly includes air duct mechanism and holding mechanism, air duct mechanism is equipped with air inlet and air outlet sequentially arranged along the air inflow direction of airflow device, holding mechanism includes the connecting end of the outer peripheral of air inlet and the free end extending to the direction away from air inlet, connecting end and free end are sequentially provided with the mounting portion with air inlet being arranged obliquely and the holding portion connected with mounting portion, power supply is detachably mounted on mounting portion, airflow cavity is formed between holding mechanism and air inlet, and mounting portion is at least partially exposed in airflow cavity, and airflow cavity is directly communicated with air inlet, so that external airflow flows through the mounting portion region where power supply is located, then enters air inlet through airflow cavity and converges into the airflow passage of air duct mechanism. The utility model has the advantages of improving the heat dissipation effect of battery pack and the air intake efficiency of air intake system.

Description

Technical Field

[0001] This utility model relates to the technical field of hair dryer equipment, specifically to a hair dryer structure. Background Technology

[0002] In personal care, industrial cleaning, and household dust removal, hair dryers are commonly used power tools as key devices providing directional airflow. They are primarily used to clean fallen leaves, grass clippings, road dust, and snow using airflow. In the existing hair dryer technology field, common products such as hair dryers typically consist of a motor, a fan, a battery pack for power supply, and a housing assembly forming the overall frame. The housing assembly usually has an air inlet and an air outlet. During operation, the motor drives the fan to rotate, forcing outside air into the device through the air inlet, creating airflow, and then expelling it through the air outlet, thus achieving the blowing function. Therefore, their motor power is usually relatively high, and the corresponding battery pack capacity is also relatively high. However, the heat dissipation design of the battery pack in existing garden hair dryers has several common problems, as detailed below.

[0003] Firstly, the battery pack installation structure is overly sealed. To ensure the overall airtightness of the equipment and cope with outdoor environmental factors such as dust and moisture, existing battery packs are mostly encased in a sealed shell within the handle or main body of the equipment, relying solely on passive heat dissipation through the shell material. This design makes it difficult for the heat generated by the battery pack during operation to dissipate through air circulation, causing heat to continuously accumulate inside the shell. This can easily lead to a rapid increase in battery pack temperature, severely affecting battery life.

[0004] Secondly, the air intake system does not specifically cover the battery pack area. Existing garden blowers often only design their air intake around the main airflow channel of the ductwork, meaning the airflow introduced through the air inlet is primarily used to generate blowing power, while the battery pack area is not included in the air intake path. The lack of effective airflow around the battery pack prevents heat dissipation through forced convection, resulting in low cooling efficiency. Furthermore, the air intake area of ​​the system is too dispersed and lacks focus, leading to excessively low air intake efficiency.

[0005] In conclusion, there is still considerable room for improvement in the heat dissipation of the battery pack and the air intake efficiency of the air intake system in existing hair dryers. Summary of the Invention

[0006] This utility model provides a hair dryer mechanism to solve the technical problems of poor heat dissipation of the existing hair dryer battery pack and low air intake efficiency of the air intake system.

[0007] To solve the above problems, this utility model provides a blower mechanism, including a power supply, a driving device, an airflow device, and a housing assembly. The housing assembly includes: a duct mechanism for accommodating the driving device and the airflow device, and a gripping mechanism at one end of the duct mechanism. The duct mechanism has an air inlet and an air outlet arranged sequentially along the air inlet direction of the airflow device. The gripping mechanism includes a connecting end disposed on the outer periphery of the air inlet and a free end extending away from the air inlet. Between the connecting end and the free end, there is a mounting part arranged at an angle to the air inlet and a gripping part connected to the mounting part. The power supply is detachably mounted on the mounting part. An airflow cavity is formed between the gripping mechanism and the air inlet. The mounting part is at least partially exposed in the airflow cavity, and the airflow cavity is directly connected to the air inlet, so that external airflow flows through the mounting part area where the power supply is located, enters the air inlet through the airflow cavity, and merges into the airflow channel of the duct mechanism.

[0008] Furthermore, the mounting part includes a mounting part body integrally formed with the connecting end and a power supply compartment disposed on the outside of the mounting part body, wherein the power supply is detachably mounted on the power supply compartment; the power supply compartment is provided with a ventilation groove that penetrates the mounting part body, and the extension direction of the ventilation groove is consistent with the airflow direction of the airflow channel.

[0009] Furthermore, the free end of the gripping mechanism is provided with a protrusion that bends toward the air duct mechanism, and the protrusion forms an auxiliary air inlet that communicates with the airflow channel; the outer surface of the gripping part is provided with anti-slip texture, and a mesh cover is installed on the outer periphery of the air inlet, and a plurality of air inlet holes are evenly distributed on the mesh cover.

[0010] Furthermore, the mesh cover has a snap-fit ​​protrusion on its edge and an adaptation groove on the outer periphery of the air inlet, and the two can be detached and installed.

[0011] Furthermore, the grip is provided with a switch button, which is connected to the power supply and the drive device via a wire, and the switch button is also provided with an embeddable waterproof sealing ring around its periphery.

[0012] Furthermore, the housing assembly also includes a receiving portion, which is detachably installed within the air duct mechanism. A sound insulation component is provided within the air duct mechanism, and a sealing ring is provided at the connection seam between the air duct mechanism and the receiving portion.

[0013] Furthermore, the driving device and the airflow device are coaxially arranged within the receiving portion, and a gap is left between the airflow device and the inner wall of the air duct mechanism.

[0014] Furthermore, the housing includes a detachably connected front compartment and a rear compartment, the rear compartment being used to house the drive unit, and the opening of the front compartment gradually narrowing towards the air outlet.

[0015] Furthermore, the connecting end of the gripping mechanism can be detachably installed at the air inlet of the air duct mechanism; the axial cross-sectional shape of the gripping mechanism is one of Z-shape, C-shape or O-shape.

[0016] Furthermore, the air duct mechanism also includes a main air duct and a secondary air duct, wherein the secondary air duct is retractably installed inside the main air duct.

[0017] The beneficial effects of this invention are as follows: By directly connecting the air inlet to the air inlet through the airflow cavity formed between the gripping mechanism and the air inlet, at least part of the mounting part is exposed within the airflow cavity, allowing external airflow to flow through the mounting part area where the power supply is located as it enters the air inlet. This flowing airflow can promptly remove the heat generated during power supply operation, preventing heat accumulation and overheating, effectively reducing the risk of power supply performance degradation and malfunctions caused by high temperatures, and extending the overall service life of the power supply and equipment.

[0018] The design of directly connecting the airflow chamber to the air inlet reduces the resistance of external airflow entering the equipment, allowing the airflow to flow more smoothly into the airflow channel of the air duct mechanism. At the same time, the airflow flowing through the power supply area ultimately participates in forming the blowing airflow, avoiding airflow waste and improving the airflow intensity and air intake efficiency at the air outlet with the same energy consumption. Attached Figure Description

[0019] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0020] Figure 1 This is a three-dimensional schematic diagram of the blower mechanism in this utility model;

[0021] Figure 2 This is a front view schematic diagram of the blower mechanism in this utility model;

[0022] Figure 3 This is a front view of the blower mechanism of this utility model without the power supply.

[0023] Figure 4 This is a top view of the blower mechanism in this utility model;

[0024] Figure 5 This utility model Figure 4 Schematic diagram of sectional view AA.

[0025] Explanation of reference numerals in the attached drawings: 1. Power supply; 2. Drive device; 3. Airflow device; 4. Housing assembly; 41. Air duct mechanism; 411. Air inlet; 412. Air outlet; 413. Airflow channel; 414. Main air duct; 415. Secondary air duct; 42. Holding mechanism; 421. Connecting end; 422. Free end; 423. Mounting part; 423a. Mounting part body; 423b. Power supply compartment; 424. Holding part; 424a. Switch button; 425. Protrusion; 426. Auxiliary air inlet; 43. Airflow cavity; 44. Mesh cover; 441. Air inlet hole; 5. Receiving part; 51. Front compartment; 511. Opening; 52. Rear compartment. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] A specific embodiment of a hair dryer: such as Figures 1-5 As shown, this embodiment discloses a blower mechanism, mainly composed of a power supply 1, a drive device 2, an airflow device 3, and a housing assembly 4. The power supply 1 and the drive device 2 are electrically connected via a power line, providing electric power to the drive device 2. The drive device 2 is connected to the airflow device 3. Under the action of the electric power from the power supply 1, the drive device 2 drives the airflow device 3 to generate thrust on the surrounding air, causing the air to flow axially. The housing assembly 4 serves as the frame of the entire mechanism, playing a crucial role in supporting and accommodating other components. All components work together to achieve a more efficient blowing function and blowing efficiency.

[0029] In this embodiment, the preferred power source 1 is a rechargeable lithium battery pack, the capacity of which is designed according to the power requirements of the device, providing continuous and stable power support for the blower mechanism. The preferred drive device 2 is a DC brushless motor, which has advantages such as high efficiency, low noise, long lifespan, and good speed regulation performance, making it very suitable as the drive source for the blower mechanism. The preferred airflow device 3 is an axial flow fan, mainly composed of a hub and blades. In other embodiments, the power source 1 can also be a nickel-metal hydride battery, a lead-acid battery, or a solar-powered battery. The drive device 2 can also be a pneumatic motor, a hydraulic motor, or a small internal combustion engine. The airflow device 3 can also be a centrifugal fan, a mixed-flow fan, or a propeller fan. There are no excessive restrictions on the power source 1, drive device 2, and airflow device 3; they can be selected according to actual production conditions.

[0030] In this embodiment, as Figure 1 and Figure 5 As shown, the housing assembly 4 includes an air duct mechanism 41 and a gripping mechanism 42. The air duct mechanism 41 is the main channel for airflow, and its hollow interior provides installation space for the drive device 2 and the airflow device 3. It also has an air inlet 411 and an air outlet 412 arranged sequentially along the airflow direction of the airflow device 3. An airflow channel 413 is formed between the air inlet 411 and the air outlet 412. This positional relationship allows the airflow to flow approximately in a straight line, minimizing airflow resistance during internal flow. When the blower mechanism operates, the drive device 2 drives the airflow device 3 to rotate, causing external air to enter through the air inlet 411, flow through the airflow channel 413, and exit through the air outlet 412, forming a directional airflow.

[0031] The gripping mechanism 42 provides a convenient grip for the operator. The connecting end 421 of the gripping mechanism 42 is located on the outer periphery of the air inlet 411, and the free end 422 extends away from the air inlet 411. Between the connecting end 421 and the free end 422, the mounting part 423 and the gripping part 424 are arranged in sequence, both of which are inclined to the air inlet 411. This inclined design is not only ergonomic, making it convenient for users to hold and operate for a long time, but also makes reasonable use of space, creating favorable conditions for the installation of other components and the flow of air.

[0032] In this embodiment, as Figures 1-5As shown, the power supply 1 is detachably mounted on the mounting part 423, facilitating its replacement and charging. An airflow cavity 43 is formed between the gripping mechanism 42 and the air inlet 411, directly communicating with the air inlet 411, and the mounting part 423 is at least partially exposed within the airflow cavity 43. This design ensures that external airflow, upon entering the air inlet 411, will inevitably flow through the mounting part 423 area where the power supply 1 is located, and then converge into the airflow channel 413 of the air duct mechanism 41. This overall structural design not only guarantees the basic blowing function of the blower mechanism but also optimizes heat dissipation and air intake efficiency. The flowing airflow can promptly remove the heat generated by the power supply 1 during operation, preventing heat accumulation in the enclosed space, effectively reducing the risk of performance degradation and malfunction due to high temperatures, and significantly extending the service life of the power supply 1.

[0033] In this embodiment, as Figure 3 As shown, the mounting part 423 includes a mounting part body 423a and a power supply compartment 423b. Preferably, the mounting part body 423a is integrally formed with the connecting end 421. This structural design ensures the firmness of the connection between the mounting part 423a and the gripping mechanism 42, reduces the connection gaps between components, and lowers the possibility of airflow leakage. In this embodiment, the power supply compartment 423b is located on the outside of the mounting part body 423a, and its position corresponds exactly to the airflow cavity 43, facilitating airflow through the power supply 1 for heat dissipation. The side of the mounting part body 423a away from the power supply compartment 423b is located inside the airflow cavity 43. The airflow flowing through the airflow cavity 43 can dissipate heat and cool the side of the mounting part body 423a away from the power supply compartment 423b, and transfer the heat to the power supply 1 in the power supply compartment 423b for cooling. In other embodiments, the power supply compartment 423b can also be located inside the mounting part 423a, exposing the entire power supply 1 in the airflow cavity 43, thereby improving the heat dissipation effect of the power supply 1. In other embodiments, the power supply compartment 423b may also be located on the left and right sides of the mounting body 423a, depending on the actual production situation.

[0034] In this embodiment, as Figure 2 and Figure 3As shown, the power supply compartment 423b is inclinedly mounted on the mounting body 423a, making the installation of the power supply 1 more convenient and labor-saving. Inside the power supply compartment 423b, ventilation slots penetrate the mounting body 423a; that is, several ventilation slots are located inside the mounting body 423a and communicate with the power supply compartment 423b, allowing the power supply compartment 423b to connect with the airflow cavity 43. The extension direction of the ventilation slots is consistent with the airflow direction of the pre-cooling air inlet channel. The design of the ventilation slots further enhances the contact area between the airflow cavity 43 and the power supply 1, improving heat dissipation efficiency. The airflow through the ventilation slots can more fully exchange heat with the power supply 1, more effectively dissipating the heat generated by the power supply 1. Simultaneously, the ventilation slots also increase the airflow volume, allowing more airflow to enter the airflow cavity 43, further improving airflow efficiency.

[0035] like Figures 1-5 As shown, in this embodiment, the protrusion 425 is located at the free end 422 of the gripping mechanism 42 and bends towards the air duct mechanism 41. The position of the protrusion 425 allows the auxiliary air inlet 426 it forms to communicate with the airflow cavity 43, thereby increasing the air intake path. The auxiliary air inlet 426 can introduce more external airflow on the basis of the original airflow cavity 43, further increasing the air intake volume. Especially when a strong airflow output is required, it can provide a sufficient airflow source for the device, ensuring the strong power of the blower mechanism. The bent shape of the protrusion 425 can guide the external airflow, allowing the airflow to enter the airflow cavity 43 more smoothly through the auxiliary air inlet 426, reducing the impact and resistance of the airflow and improving the air intake efficiency. In other embodiments, the protrusion 425 can also be connected to the outer periphery of the air inlet 411 into an integral structure, making it easier and more convenient for the operator to hold the grip 424. At the same time, it is also more convenient to operate the switch button 424a.

[0036] In this embodiment, an anti-slip texture is provided on the outer surface of the grip portion 424, covering the main area of ​​contact between the user's hand and the grip. The anti-slip texture comes in various shapes, typically an uneven surface, which increases the friction between the hand and the grip portion 424. When using the hair dryer mechanism, especially when hands are sweaty or the device surface is dusty or moist, the anti-slip texture effectively prevents hand slippage, ensuring the user can hold the device stably and improving operational safety and accuracy.

[0037] In this embodiment, as Figures 1-5As shown, the mesh cover 44 is installed on the outer periphery of the air inlet 411, and its position allows for preliminary filtration of the airflow entering the air inlet 411. The mesh cover 44 has several evenly distributed air inlet holes 441. The shape and size of these air inlet holes 441 are designed to ensure sufficient airflow while effectively preventing external dust and debris from entering the equipment, thus avoiding damage to components such as the drive unit 2 and the airflow device 3. The mesh cover 44 provides a protective barrier for the internal components of the equipment, extending its service life and reducing maintenance costs.

[0038] Specifically, the mesh cover 44 has snap-fit ​​protrusions on its edge, and the air inlet 411 has a matching groove on its outer periphery. In this embodiment, the two are preferably installed detachably by snap-fit. This connection method allows the mesh cover 44 to be tightly installed on the air inlet 411, ensuring the stability of the connection. The detachable installation design facilitates the removal and cleaning of the mesh cover 44. When a lot of dust and debris accumulates on the mesh cover 44, the operator can easily remove it for cleaning, ensuring the air inlet 411 remains unobstructed and maintaining air intake efficiency. In other embodiments, the mesh cover 44 and the air inlet 411 can also be connected by bonding, welding, screwing, or integral molding, depending on the specific production environment, without much restriction.

[0039] In this embodiment, as Figure 3 and Figure 5 As shown, a switch button 424a is also provided on the grip part 424. Its position allows the operator to easily operate the device while holding it, without needing to change their grip posture, thus improving operational convenience. The switch button 424a is connected to the power supply 1 and the drive device 2 via a wire, controlling the start and stop of the drive device 2 to switch the working state of the blower mechanism. A waterproof sealing ring is also provided around the switch button 424a, its position tightly fitting the gap between the switch button 424a and the grip part 424, forming a waterproof barrier. During the use of the blower mechanism, water vapor or liquid splashes may occur. The waterproof sealing ring effectively prevents moisture from entering the device, avoiding short circuits and component damage caused by moisture, thus improving the safety and reliability of the equipment.

[0040] In this embodiment, as Figure 5As shown, the blower mechanism also includes a receiving part 5, which is detachably installed within the air duct mechanism 41. The drive unit 2 and the airflow device 3 are coaxially arranged within the receiving part 5. This detachable design facilitates the maintenance and replacement of the drive unit 2 and the airflow device 3. A sound insulation component is also provided within the air duct mechanism 41 to effectively block the noise generated by the drive unit 2 and the airflow device 3 during operation from propagating outwards. The sound insulation component is typically made of materials with good sound insulation properties, such as sound-absorbing cotton, which can absorb and reflect noise, reducing noise pollution during the operation of the blower mechanism. Furthermore, a sealing ring is provided at the connection seam between the air duct mechanism 41 and the receiving part 5 to seal the gap between them, preventing external dust, moisture, etc., from entering the equipment through the connection seam. The sealing ring is made of elastic material, has good sealing performance, ensures the cleanliness and dryness of the equipment's interior, protects internal components from damage, and extends the equipment's service life.

[0041] The drive unit 2 and the airflow device 3 are coaxially mounted within the receiving section 5, ensuring that the drive unit 2 can stably drive the airflow device 3 to rotate, reducing eccentric vibration and energy loss caused by misalignment. The coaxial arrangement allows the power of the drive unit 2 to be transmitted to the airflow device 3 more efficiently, improving energy conversion efficiency. A gap is left between the airflow device 3 and the inner wall of the duct mechanism 41. This prevents friction and collision between the airflow device 3 and the inner wall of the duct mechanism 41 during rotation, ensuring the safe and stable operation of the equipment.

[0042] In this embodiment, as Figure 5 As shown, the housing 5 consists of a front housing 51 and a rear housing 52, which can be detachably connected or integrally formed. The rear housing 52 is used to house the drive unit 2, and its shape is adapted to the structure of the drive unit 2, providing stable support and protection for the drive unit 2. The opening 511 of the front housing 51 gradually narrows towards the air outlet 412, which can converge the airflow, increase the speed of the airflow when it flows out of the front housing 51, and enhance the airflow intensity of the air outlet 412.

[0043] In this embodiment, the connecting end 421 of the gripping mechanism 42 is detachably installed at the air inlet 411 of the air duct mechanism 41, allowing the gripping mechanism 42 to be replaced or repaired according to the operator's needs or usage scenarios. The axial cross-sectional shape of the gripping mechanism 42 can be one of a Z-shape, a C-shape, or an O-shape. Different cross-sectional shapes have their unique advantages, meeting different design requirements and usage scenarios, and improving the design flexibility of the blower mechanism. In particular, the use of a C-shaped or O-shaped structure makes it easier to hang the blower mechanism on a wall or other equipment, making the placement of the blower mechanism more flexible and convenient, rather than placing it on the ground like traditional blower mechanisms.

[0044] like Figures 1-5As shown, the air duct mechanism 41 includes a main air duct 414 and a secondary air duct 415. In this embodiment, the main air duct 414 and the secondary air duct 415 are preferably integrally formed, which facilitates production and manufacturing. In other embodiments, the main air duct 414 and the secondary air duct 415 are detachable and installable. The secondary air duct 415 is telescopically installed within the main air duct 414. The main air duct 414, as the main body of the air duct mechanism 41, determines the main airflow path through its shape and size. The secondary air duct 415 can extend and retract within the main air duct 414, changing the overall length of the air duct mechanism 41. The telescopic design of the secondary air duct 415 allows the blower mechanism to adjust the distance between the air outlet 412 and the target object according to usage requirements. When blowing air onto objects at a distance, the secondary air duct 415 can extend from the main air duct 414, increasing the length of the air duct mechanism 41 and allowing the airflow to reach further. When working in confined spaces or when equipment needs to be stored, the secondary air duct 415 can be retracted into the main air duct 414, shortening the overall length of the equipment and improving operational flexibility and storage convenience. Simultaneously, the extension and retraction of the secondary air duct 415 can also alter the airflow velocity and pressure to some extent. By adjusting the extension length of the secondary air duct 415, different airflow intensities can be obtained to adapt to various work requirements. The specific configuration of the main air duct 414 and the secondary air duct 415 can be selected based on the product's production requirements, without imposing excessive restrictions.

[0045] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0046] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A blower mechanism, characterized in that, The device includes a power supply (1), a drive unit (2), an airflow device (3), and a housing assembly (4). The housing assembly (4) includes a duct mechanism (41) for accommodating the drive unit (2) and the airflow device (3) and a gripping mechanism (42) located at one end of the duct mechanism (41). The duct mechanism (41) has an air inlet (411) and an air outlet (412) arranged sequentially along the air intake direction of the airflow device (3). The gripping mechanism (42) includes a connecting end (421) located on the outer periphery of the air inlet (411) and a free end (422) extending away from the air inlet (411). The connecting end (421) and the free end (422) are arranged sequentially between them. The device has an installation part (423) that is inclined to the air inlet (411) and a grip part (424) connected to the installation part (423). The power supply (1) is detachably installed on the installation part (423). An airflow cavity (43) is formed between the grip mechanism (42) and the air inlet (411). The installation part (423) is at least partially exposed in the airflow cavity (43), and the airflow cavity (43) is directly connected to the air inlet (411), so that the external airflow flows through the area of ​​the installation part (423) where the power supply (1) is located, enters the air inlet (411) through the airflow cavity (43), and merges into the airflow channel (413) of the air duct mechanism (41).

2. The blower mechanism according to claim 1, characterized in that, The mounting part (423) includes a mounting part body (423a) integrally formed with the connecting end (421) and a power supply compartment (423b) disposed on the outside of the mounting part body (423a). The power supply (1) is detachably mounted on the power supply compartment (423b). The power supply compartment (423b) is provided with a ventilation groove that penetrates the mounting part body (423a). The extension direction of the ventilation groove is consistent with the airflow direction of the airflow channel (413).

3. The blower mechanism according to claim 1, characterized in that, The free end (422) of the gripping mechanism (42) is provided with a protrusion (425) that bends toward the air duct mechanism (41), and the protrusion (425) forms an auxiliary air inlet (426) that communicates with the airflow cavity (43). The outer surface of the grip (424) is provided with anti-slip texture, and a mesh cover (44) is installed on the outer periphery of the air inlet (411), and a number of air inlets (441) are evenly distributed on the mesh cover (44).

4. The blower mechanism according to claim 3, characterized in that, The mesh cover (44) has a snap-fit ​​protrusion on its edge, and the air inlet (411) has a matching groove on its outer periphery. The two can be detached and installed.

5. The blower mechanism according to claim 1 or 3, characterized in that, The grip (424) is provided with a switch button (424a), which is connected to the power supply (1) and the drive device (2) via a wire. The switch button (424a) is also provided with an embeddable waterproof sealing ring around its periphery.

6. The blower mechanism according to claim 1, characterized in that, The blower mechanism also includes a receiving part (5), which is detachably installed in the air duct mechanism (41). A sound insulation component is provided in the air duct mechanism (41), and a sealing ring is provided at the connection seam between the air duct mechanism (41) and the receiving part (5).

7. The blower mechanism according to claim 6, characterized in that, The drive device (2) and the airflow device (3) are coaxially arranged in the receiving part (5), and there is a gap between the airflow device (3) and the inner wall of the air duct mechanism (41).

8. The blower mechanism according to claim 6, characterized in that, The housing (5) includes a detachably connected front housing (51) and a rear housing (52), the rear housing (52) being used to house the drive unit (2), and the opening (511) of the front housing (51) gradually narrowing in the direction of the air outlet (412).

9. The blower mechanism according to claim 1, characterized in that, The connecting end (421) of the gripping mechanism (42) is detachably installed at the air inlet (411) of the air duct mechanism (41); the axial cross-sectional shape of the gripping mechanism (42) is one of Z-shape, C-shape or O-shape.

10. The blower mechanism according to claim 1, characterized in that, The air duct mechanism (41) also includes a main air duct (414) and a secondary air duct (415), wherein the secondary air duct (415) is retractably installed inside the main air duct (414).

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