blower

Abstract

This application relates to a blower, comprising: a main body having an air inlet, an air outlet, and a main fluid duct connecting the air inlet and the air outlet; a handle fixedly connected to the main body, having an auxiliary air outlet and an auxiliary fluid channel connecting the auxiliary air outlet and the main fluid duct; an airflow generating structure installed on the main body, including an impeller and a drive motor connected to the impeller, the impeller and the drive motor being located within the main fluid duct; and a control board installed on the handle and located within the auxiliary fluid channel. This application can prevent dust, water, and other debris from entering the blower through the air outlet and damaging the control board. When the airflow generating structure is running, in addition to generating the airflow required for the blower's operation through the main fluid duct, it can also form an airflow in the auxiliary fluid channel to cool the control board, preventing overheating and damage. Furthermore, the control board being installed within the auxiliary fluid channel avoids obstructing the fluid flow in the main fluid duct.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and in particular to a blower. Background Technology

[0002] A blower, also known as a dust removal gun, dust blower, or air blower, uses a motor to drive an impeller, which accelerates the fluid and sprays it out from a relatively narrow nozzle. This high-speed, concentrated fluid cleans the surface being cleaned, blowing away dust and particles. In some applications, blowers can also be used to inflate air-filled beds or to accelerate the combustion of burning charcoal.

[0003] To generate high-speed fluid, blower motors typically use brushless motors, which require matching circuit boards to control the movement of their rotors.

[0004] In existing technologies, the circuit board, stator, rotor, and impeller are usually arranged in sequence, with the circuit board close to the air outlet, so that the high-speed fluid can quickly carry away the heat from the circuit board.

[0005] However, while placing the circuit board near the air outlet is beneficial for cooling the circuit board, it also brings a series of problems. For example, the circuit board obstructs fluid movement, causing fluid turbulence and reducing airflow, while also generating noise. In addition, the working environment of the dust blower is complex, and if the circuit board is close to the air outlet, dust, water and other debris can easily enter the blower cavity through the air outlet, causing damage to the circuit board. Summary of the Invention

[0006] Therefore, it is necessary to provide a blower that addresses the problem of potential damage when the circuit board is placed near the air outlet in the existing technology.

[0007] This application provides a blower, comprising: a main body having an air inlet, an air outlet, and a main fluid duct connecting the air inlet and the air outlet; a handle fixedly connected to the main body, the handle having an auxiliary air outlet and an auxiliary fluid channel, the auxiliary fluid channel connecting the auxiliary air outlet and the main fluid duct; an airflow generating structure mounted on the main body, including an impeller and a drive motor, the drive motor being connected to the impeller, the impeller and the drive motor being located within the main fluid duct; a control board mounted on the handle and located within the auxiliary fluid channel; and a battery pack detachably mounted on the end of the handle opposite to the main body, wherein the battery pack is electrically connected to the control board when the battery pack is connected to the handle.

[0008] According to one embodiment of this application, the main body includes: a duct, which is sleeved on the outside of the airflow generating structure, and one end of the duct is configured as the air outlet; a cover, which is connected to the end of the duct opposite to the air outlet, and the cover has a through hole communicating with the air inlet and the impeller.

[0009] Preferably, the main body further includes: an air inlet cover, located on the side of the cylinder cover away from the air duct, the air inlet cover having the air inlet.

[0010] Preferably, the main body further includes: an air inlet filter frame located on the side of the air inlet cover near the air outlet; and air inlet filter cotton installed on the air inlet filter frame.

[0011] Preferably, the main body further includes a first housing and a second housing disposed opposite to each other, the first housing and the second housing being fixedly connected and both being fixedly connected to the handle, the first housing and the second housing being fixedly disposed on the outside of the air duct, the duct cover and the air inlet filter frame, and one end of the first housing and the second housing being fixedly connected to the air inlet cover.

[0012] Preferably, the main body further includes: a first sealing element located between the air duct and the cover; and / or, a second sealing element located between the cover and the airflow generating structure; and / or, a vibration damping element located between the air duct and the airflow generating structure.

[0013] According to one embodiment of this application, the airflow generating structure further includes: a motor housing, installed inside the air duct and sleeved on the outside of the drive motor, and the impeller located at one end of the motor housing; the chamber between the motor housing and the drive motor constitutes a section of the main fluid air duct.

[0014] Preferably, the air duct is provided with a tapering section, the inner hole of the tapering section tapering from one end near the air inlet to the end away from the air inlet; the airflow generating structure further includes: an air outlet diffuser sleeve, installed inside the air duct, one end of which is connected to the end of the motor housing away from the impeller, and the other end is provided with a flexible lip, the flexible lip abutting against the inner wall of the tapering section; the inner cavity of the air outlet diffuser sleeve forms a section of the main fluid air duct.

[0015] Preferably, the inner wall of the tapered portion is provided with at least one air guide rib, which extends along the extension direction of the inner hole of the tapered portion.

[0016] Preferably, the radius of the air outlet is smaller than the outer diameter of the impeller; preferably, the ratio of the radius of the air outlet to the outer diameter of the impeller is less than or equal to 1 / 2.

[0017] According to one embodiment of this application, the handle includes a third housing and a fourth housing, the third housing and the fourth housing being disposed opposite to each other and fixedly connected, both the third housing and the fourth housing being fixedly connected to the main body, the auxiliary fluid channel being located between the third housing and the fourth housing, and the auxiliary air vent being located in the third housing and / or the fourth housing.

[0018] Preferably, the main body includes a first housing and a second housing, the first housing being fixedly connected to the third housing, and the second housing being fixedly connected to the fourth housing.

[0019] Preferably, the second housing and the third housing and / or the second housing and the fourth housing are integrally formed.

[0020] According to one embodiment of this application, the handle further includes a mounting cavity located between the third housing and the fourth housing, the mounting cavity being used to mount the control board.

[0021] Preferably, the mounting cavity is provided with a first interface communicating with the main fluid duct and a second interface communicating with the auxiliary air outlet, and the inner cavity of the mounting cavity is configured as a section of the auxiliary fluid channel.

[0022] According to one embodiment of this application, the handle further includes: a pipe, a first end of which is connected to the inner cavity of the mounting cavity through the second interface, a second end of which is connected to the main fluid duct, and the inner hole of the pipe is configured as a partial section of the auxiliary fluid channel.

[0023] Preferably, the second end of the pipe is provided with a first branch pipe, which is connected to the main fluid duct, and the connection node between the first branch pipe and the main fluid duct is located on the side of the impeller near the air inlet.

[0024] Preferably, the main body includes a duct, and the airflow generating structure includes a motor housing, with an isolation cavity formed between the duct and the motor housing; a second branch pipe is provided at the second end of the pipe, and the second branch pipe passes through the isolation cavity and communicates with the inner cavity of the motor housing.

[0025] Preferably, the pipe comprises a flexible pipe.

[0026] Preferably, the pipeline further includes a support member disposed inside the flexible pipe.

[0027] Preferably, the support member adopts a spiral structure, and the support member extends spirally along the flexible tube.

[0028] According to one embodiment of this application, it further includes: a trigger, mounted on a handle, the trigger being electrically connected to the control board, and the control board being electrically connected to the drive motor, the trigger being used to control the start and stop of the drive motor.

[0029] Preferably, it further includes: a latch, mounted on the handle, the latch being used to lock the trigger; and an unlock button, mounted on the handle and connected to the latch, the unlock button being used to unlock the trigger.

[0030] Preferably, in the extension direction of the handle, the control plate is located on the side of the trigger away from the main body, and the auxiliary air vent is located on the side of the control plate away from the trigger.

[0031] According to one embodiment of this application, the orientation of the auxiliary air vent is opposite to the orientation of the air outlet.

[0032] According to one embodiment of this application, it further includes: a wiring terminal, installed on the main body or the handle, the wiring terminal being electrically connected to the control board, and the wiring terminal being used for connecting an external power source.

[0033] According to one embodiment of this application, an air guide gap is formed between the battery pack and the handle, the auxiliary air vent is located within the air guide gap, and the auxiliary air vent is connected to the external environment through the air guide gap.

[0034] Preferably, the battery pack is provided with a port for connecting electrical equipment.

[0035] In the aforementioned blower, the control board is mounted on the handle, away from the air outlet. This prevents dust, water, and other debris from entering the blower through the outlet and damaging the control board. The auxiliary fluid channel is connected to the main fluid duct. When the airflow generating structure is running, in addition to generating the airflow required for the blower's operation through the main fluid duct, an airflow is also formed in the auxiliary fluid channel to cool the control board, preventing it from overheating and being damaged. Furthermore, mounting the control board within the auxiliary fluid channel avoids obstructing the flow of fluid in the main fluid duct. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of a blower provided in an embodiment of this application.

[0037] Figure 2 This is a schematic diagram of the internal structure of a blower provided in an embodiment of this application.

[0038] Figure 3 An exploded view of a blower provided in an embodiment of this application.

[0039] Figure 4This is a schematic diagram of the internal structure of the main body of a blower provided in an embodiment of this application.

[0040] Figure 5 This is a schematic diagram of the internal structure of an airflow generating structure in a blower, provided as an embodiment of this application.

[0041] Figure 6 An exploded view of an airflow generation structure in a blower according to an embodiment of this application.

[0042] Figure 7 This is a schematic diagram of the internal structure of the blower duct in an embodiment of this application.

[0043] Figure 8 This is a schematic diagram of the internal structure of an auxiliary fluid channel in a blower, provided as an embodiment of this application.

[0044] Figure 9 This is a schematic diagram of the internal structure of the main body of a blower, provided for another embodiment of this application.

[0045] Figure 10 This is a schematic diagram of the structure of an air outlet component in a blower, provided as an embodiment of this application.

[0046] Figure 11 An exploded view of the air outlet assembly in a blower according to an embodiment of this application.

[0047] Figure 12 This is one of the schematic diagrams showing the cooperative structure of a first air outlet nozzle and a second air outlet nozzle in a blower, according to an embodiment of this application.

[0048] Figure 13 This is a second schematic diagram of the cooperative structure of a first and second air outlet nozzle in a blower, provided as an embodiment of this application.

[0049] Figure 14 This is a schematic diagram of the cooperative structure of a first air outlet nozzle and a third air outlet nozzle in a blower, provided as an embodiment of this application.

[0050] Reference numerals: 100, main body; 110, air duct; 111, air outlet; 112, air guide rib; 120, duct cover; 130, first sealing element; 140, second sealing element; 150, vibration damping element; 160, air inlet cover; 161, air inlet; 170, main fluid duct; 180, isolation chamber; 190, air inlet filter frame; 191, air inlet filter cotton; 1010, first housing; 1020, second housing;

[0051] 200, Handle; 210, Auxiliary fluid channel; 211, Mounting cavity; 2111, First interface; 221, Pipe; 2211, First branch pipe; 2212, Second branch pipe; 230, Support; 240, Trigger; 250, Lock; 260, Unlock button; 270, Auxiliary air vent; 2010, Third housing; 2020, Fourth housing;

[0052] 300. Airflow generating structure; 310. Impeller; 320. Drive motor; 330. Motor housing; 340. Air outlet diffuser sleeve; 341. Flexible lip;

[0053] 400. Control board; 410. MOSFET;

[0054] 500, battery pack;

[0055] 700. Air outlet assembly; 710. First air outlet nozzle; 720. Second air outlet nozzle; 730. Sealing component; 740. Third air outlet nozzle; 750. Fourth air outlet nozzle; 760. Accessory rack. Detailed Implementation

[0056] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0057] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0058] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0060] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0062] Combination Figures 1 to 4 , Figure 1 This is a schematic diagram of the overall structure of a blower provided in one embodiment of this application; Figure 2 This is a schematic diagram of the internal structure of a blower provided in one embodiment of this application; Figure 3 An exploded view of a blower provided in one embodiment of this application; Figure 4This is a schematic diagram of the internal structure of the main body of a blower according to an embodiment of this application. Figure 2 and Figure 4 The arrows in the diagram indicate the airflow direction. An embodiment of this application provides a blower comprising a main body 100, a handle 200, an airflow generating structure 300, and a control board 400. The main body 100 is provided with an air inlet 161, an air outlet 111, and a main fluid duct 170 connecting the air inlet 161 and the air outlet 111. The handle 200 is fixedly connected to the main body 100 and is provided with an auxiliary air outlet 270 and an auxiliary fluid channel 210, the auxiliary fluid channel 210 connecting the auxiliary air outlet 270 and the main fluid duct 170. The airflow generating structure 300 is mounted on the main body 100 and includes an impeller 310 and a drive motor 320. The drive motor 320 is connected to the impeller 310, and the impeller 310 and the drive motor 320 are located within the main fluid duct 170. The control board 400 is mounted on the handle 200 and located within the auxiliary fluid channel 210.

[0063] When the drive motor 320 is running, it can drive the impeller 310 to rotate, thereby forming an airflow from the air inlet 161 to the air outlet 111 in the main fluid duct 170, and at the same time, an airflow is formed in the auxiliary fluid channel 210. The airflow formed in the auxiliary fluid channel 210 can carry away the heat on the control board 400, thereby cooling the control board 400.

[0064] In this embodiment, the control board 400 is installed in the auxiliary fluid channel 210 of the handle 200. On the one hand, the control board 400 avoids obstructing the gas flow in the main fluid duct 170 and prevents the airflow in the main fluid duct 170 from becoming turbulent. On the other hand, the control board 400 is located away from the air outlet 111, which can prevent debris from entering the blower through the air outlet 111 and causing damage to the control board 400.

[0065] It is understandable that the auxiliary fluid channel 210 can serve as both an air outlet and an air inlet. Specifically, in one optional configuration, when the impeller 310 rotates and airflow is formed within the main fluid duct 170, a portion of the airflow within the main fluid duct 170 flows into the auxiliary fluid channel 210. In another optional configuration, when the impeller 310 rotates and airflow is formed within the main fluid duct 170, due to the reduced air pressure within the main fluid duct 170, airflow towards the main fluid duct 170 can be formed within the auxiliary fluid channel 210. Both of these optional configurations can effectively cool the control panel 400.

[0066] Preferably, the auxiliary fluid channel 210 serves as an air inlet channel. That is, when the impeller 310 rotates and airflow is formed in the main fluid duct 170, airflow towards the main fluid duct 170 is also formed in the auxiliary fluid channel 210. In this case, the airflow in the auxiliary fluid channel 210 can flow out through the air outlet 111 together with the airflow in the main fluid duct 170, ensuring good air outlet performance.

[0067] Optionally, the extension direction of the handle 200 intersects the extension direction of the main body 100; in other words, an angle is formed between the handle 200 and the main body 100. In this embodiment, the angle between the handle 200 and the main body 100 is not specifically limited. For example, the angle between the handle 200 and the portion of the main body 100 near the air outlet 111 may be 90° to 120°. This facilitates the user's use of the handle 200 as a grip.

[0068] Optionally, in the airflow direction within the main fluid duct, the drive motor 320 is located downstream of the impeller 310, so that the airflow generated by the impeller 310 can be better utilized to cool the drive motor 320.

[0069] In some embodiments of this application, the main body 100 includes a duct 110 and a cover 120. The duct 110 is sleeved on the outside of the airflow generating structure 300. One end of the duct 110 is configured as an air outlet 111, and the other end faces the air inlet 161. The cover 120 is connected to the end of the duct 110 away from the air outlet 111 (i.e., the end facing the air inlet 161), and the cover 120 has a perforation communicating with the air inlet 161 and the impeller 310.

[0070] In this embodiment, the air duct 110 and the cover 120 can serve as guides and rectifyers, allowing the airflow generated by the impeller 310 to flow out through the perforations on the cover 120 and the inner cavity of the air duct 110 in sequence. During this process, the airflow can cool down the drive motor 320 located inside the air duct 110, and a better air outlet effect can be achieved under the action of the air duct 110.

[0071] Optionally, the air duct 110 is provided with a tapering section, the inner hole of which gradually narrows from one end near the air inlet 161 to the other end away from the air inlet 161. The phrase "the inner hole of the tapering section gradually narrows from one end near the air inlet 161 to the other end away from the air inlet 161" means that the cross-sectional size of the inner hole of the tapering section gradually decreases from one end near the air inlet 161 to the other end away from the air inlet 161. For example, if the cross-sectional shape of the inner hole of the tapering section is circular, the diameter of the inner hole of the tapering section gradually decreases from one end near the air inlet 161 to the other end away from the air inlet 161.

[0072] Furthermore, the sidewall of the tapered section tapers from the end near the air inlet 161 to the end away from the air inlet 161. This makes the wall thickness of the tapered section uniform, which helps to prevent stress concentration, improve structural strength, and reduce processing difficulty.

[0073] By setting a tapered section on the air duct 110, the airflow inside the air duct 110 that has passed through the drive motor 320 can be converged and discharged from the air outlet 111. On the one hand, this can increase the airflow velocity at the air outlet 111. On the other hand, during the airflow convergence process, the tapered section can rectify the airflow and prevent airflow turbulence.

[0074] Optionally, the duct 110 is provided with a first extension and a second extension, which are located at both ends of the duct 110. The first extension has an air outlet 111, and the second extension is sleeved on the outside of the drive motor 320. The inner holes of the first and second extensions are cylindrical holes. The inner diameter of the tapered portion of the first extension is the same as the inner diameter of the end near the air outlet 111, and the inner diameter of the second extension is the same as the inner diameter of the end of the tapered portion away from the air outlet 111. Airflow reaches the tapered portion through the inner hole of the second extension, converges in the tapered portion, and then flows out along the first extension.

[0075] Optionally, the outer wall of the first extension may be configured as a stepped structure or have a snap-fit ​​structure, etc., to facilitate connection with other accessories.

[0076] In some embodiments, the radius of the air outlet 111 is smaller than the outer diameter of the impeller 310, thereby concentrating the air and achieving a better air outlet effect.

[0077] Preferably, the ratio of the radius of the air outlet 111 to the outer diameter of the impeller is less than or equal to 1 / 2.

[0078] It is worth noting that designing the radius of the air outlet 111 to be smaller than the outer diameter of the impeller 310 can achieve a better air outlet effect, but it can also easily cause the internal temperature of the main body 100 to rise, which can easily damage the control board 400. In this embodiment, installing the control board 400 in the auxiliary fluid channel 210 of the handle 200 can avoid the adverse effects of the temperature rise of the main body 100 on the control board.

[0079] In some embodiments, the main body 100 further includes an air inlet cover 160, which is located on the side of the cylinder cover 120 away from the air duct 110. The air inlet cover 160 is configured with an air inlet 161. The air inlet cover 160 can serve as a shield. For example, the air inlet cover 160 is provided with multiple perforations, which together form the air inlet 161. Adjacent perforations are separated by a partition structure. Thus, the air inlet cover 160 can block particles and other debris larger than the perforations through the partition structure, thereby protecting the drive motor 320 and impeller 310 components inside the blower.

[0080] In some embodiments, the main body 100 further includes an air inlet filter frame 190 and an air inlet filter cotton 191. The air inlet filter frame 190 is located on the side of the air inlet cover 160 near the air outlet 111. The air inlet filter frame 190 is provided with a plurality of vent holes for gas to flow through. The size of the vent holes is smaller than the size of the air inlet filter cotton 191, and there is a blocking structure between adjacent vent holes. The air inlet filter cotton 191 is installed on the air inlet filter frame 190. Specifically, the air inlet filter cotton 191 is installed on the side of the air inlet filter frame 190 near the air inlet cover 160.

[0081] After the fluid enters the main fluid duct through the air inlet 161, it can pass through the air inlet filter cotton 191 and the air inlet filter frame 190. During this process, the air inlet filter cotton 191 can filter out small impurities such as dust carried by the fluid, further improving the cleanliness of the airflow and preventing damage to components such as the drive motor 320 and impeller 310 in the blower.

[0082] Optionally, the air inlet filter frame 190 and the air inlet cover 160 are detachably connected. The specific connection method between the air inlet filter frame 190 and the air inlet cover 160 is not limited here; for example, it can be a snap-fit ​​or a threaded connection. The air inlet filter cotton 191 is located between the air inlet filter frame 190 and the air inlet cover 160. The air inlet filter frame 190 and the air inlet cover 160 can clamp and limit the air inlet filter cotton 191, ensuring the structural and positional stability of the air inlet filter cotton 191, thereby ensuring good filtration effect. The detachable connection between the air inlet filter frame 190 and the air inlet cover 160 facilitates production and the replacement of the air inlet filter cotton 191.

[0083] In some embodiments, the main body 100 further includes a first housing 1010 and a second housing 1020 disposed opposite to each other. The first housing 1010 and the second housing 1020 are both arc-shaped plates that are approximately semi-cylindrical. The first housing 1010 and the second housing 1020 are fixedly connected and both are fixedly connected to the handle 200. The first housing 1010 and the second housing 1020 are fixedly disposed on the outside of the air duct 110, the duct cover 120 and the air inlet filter frame 190. One end of the first housing 1010 and the second housing 1020 is fixedly connected to the air inlet cover 160.

[0084] The first housing 1010 and the second housing 1020 can position the air duct 110, the cover 120, the air inlet filter frame 190 and the air inlet cover 160, fixing their relative positions. In addition, the first housing 1010 and the second housing 1020 can also protect the air duct 110, the cover 120, the air inlet filter frame 190 and the air inlet cover 160, as well as other internal components such as the airflow generating structure 300.

[0085] In this embodiment, the first housing 1010 and the second housing 1020 are detachably connected or non-detachably connected. Preferably, the first housing 1010 and the second housing 1020 are detachably connected. For example, the first housing 1010 and the second housing 1020 are connected by bolts or screws, or the first housing 1010 and the second housing 1020 are snapped together.

[0086] Optionally, the inner side of the first housing 1010 and / or the second housing 1020 is provided with a plurality of limiting ribs to limit at least one of the air duct 110, the duct cover 120, the air inlet filter frame 190 and the air inlet cover 160. The limiting ribs can also improve the structural strength of the first housing 1010 and / or the second housing 1020 and improve the service life of the blower.

[0087] Optionally, the first housing 1010 and the second housing 1020 are sealed together, as are the first housing 1010 and the second housing 1020 with the air duct 110, the cylinder cover 120, the air inlet filter frame 190 and the air inlet cover 160, thereby improving the overall sealing of the main body 100, thus improving the air output effect, and preventing dust and other debris from entering the blower through the gaps between the first housing 1010 and the second housing 1020 and between the first housing 1010 and the second housing 1020 and the air duct 110, the cylinder cover 120, the air inlet filter frame 190 and the air inlet cover 160.

[0088] In some embodiments, the main body 100 further includes a first sealing element 130, which may be a sealing ring, and is located between the air duct 110 and the cover 120. The first sealing element 130 can increase the sealing between the air duct 110 and the cover 120, preventing airflow from flowing out through the gap between the air duct 110 and the cover 120, and also helps to improve the quietness of the blower.

[0089] Optionally, the first end of the cylinder cover 120 facing the air duct 110 is provided with an annular groove, the first sealing member 130 is located in the annular groove, and the end of the air duct 110 facing the cylinder cover 120 abuts against the first sealing member 130.

[0090] Optionally, the end of the air duct 110 facing the air duct 110 and the first sealing element 130 are both located within the annular groove of the cover 120. This can further improve the sealing performance between the air duct 110 and the cover 120, and increase the connection strength between the air duct 110 and the cover 120.

[0091] In some embodiments, the main body 100 further includes a second sealing member 140, which is an annular member and is located between the cap 120 and the airflow generating structure 300. Exemplarily, the second sealing member 140 is sleeved on the outside of the airflow generating structure 300 and located on the inside of the cap 120, and the second sealing member 140 is in contact with both the airflow generating structure 300 and the cap 120.

[0092] The second seal 140 can be an elastic element. On the one hand, the second seal 140 helps to improve the sealing between the airflow generating structure 300 and the cylinder cover 120, ensuring that all the airflow passing through the cylinder cover 120 enters the airflow generating structure 300. On the other hand, the second seal 140 can generate elastic deformation, realizing the airflow generating structure 300 floating in the radial and axial directions, thereby reducing the noise of the airflow generating structure 300.

[0093] In some embodiments, the main body 100 further includes a vibration damping member 150, which is located between the air duct 110 and the airflow generating structure 300. The vibration damping member 150 can be a shock-absorbing soft rubber. The vibration damping member 150 is located in the gap between the inner side of the air duct 110 and the airflow generating structure 300, and can generate elastic deformation to realize the radial and axial floating of the airflow generating structure 300, thereby reducing the noise of the airflow generating structure 300.

[0094] Optionally, multiple vibration damping elements 150 are provided, and multiple vibration damping elements 150 are arranged around the outside of the airflow generating structure 300, thereby playing a vibration damping role on the airflow generating structure 300 in different directions.

[0095] Combination Figure 5 and Figure 6 In some embodiments, the airflow generating structure 300 further includes a motor housing 330, which is installed inside the air duct 110 and sleeved on the outside of the drive motor 320. The impeller 310 is located at one end of the motor housing 330. The chamber between the motor housing 330 and the drive motor 320 constitutes a section of the main fluid duct 170.

[0096] The airflow generated by the impeller 310 can pass through the motor housing 330. The motor housing 330 can confine the airflow around the drive motor 320, improving the cooling effect of the drive motor 320 and preventing airflow turbulence, thus improving the blower's output efficiency. The motor housing 330 also supports the drive motor 320, improving its operational stability and providing protection.

[0097] In some embodiments, the airflow generating structure 300 further includes an outlet diffuser sleeve 340, which is installed inside the air duct 110. One end of the outlet diffuser sleeve 340 is connected to the end of the motor housing 330 opposite to the impeller 310, and the other end is provided with a flexible lip 341, which abuts against the inner wall of the tapered section. The inner cavity of the outlet diffuser sleeve 340 is configured as a section of the main fluid duct 170.

[0098] In this embodiment, the air outlet diffuser sleeve 340 is located on the side of the motor housing 330 facing the air outlet 111. In the airflow direction, the impeller 310, drive motor 320, and air outlet diffuser sleeve 340 are arranged sequentially. The motor housing 330 is located outside the drive motor 320. One end of the motor housing 330 is connected to the impeller 310, forming a seal, and the other end is connected to the air outlet diffuser sleeve 340, also forming a seal. Furthermore, the impeller 310 is connected to the cylinder cover 120 via the second sealing member 140, and the air outlet diffuser sleeve 340 is connected to the inner wall of the air duct 110.

[0099] The air outlet diffuser sleeve 340 is provided with a flexible lip 341, which abuts against the inner wall of the tapered section in the air duct 110. On the one hand, this facilitates the sealing between the air outlet diffuser sleeve 340 and the air duct 110, ensuring that all the airflow in the motor housing 330 enters the air duct 110 through the air outlet diffuser sleeve 340 and flows out through the air outlet 111. On the other hand, the flexible lip 341 can deform to achieve flexible contact between the air outlet diffuser sleeve 340 and the air duct 110, enabling the airflow generating structure 300 to float radially and axially, thereby reducing the noise of the airflow generating structure 300.

[0100] Optionally, the flexible lip 341 gradually increases in diameter from one end near the motor housing 330 to the end that connects with the tapered portion, which makes it easier for the flexible lip 341 to form a seal with the tapered portion and makes it easier for air inside the motor housing 330 to be introduced into the air duct 110 through the flexible lip 341.

[0101] Optionally, one end of the air outlet diffuser sleeve 340 is fitted onto the outside of the motor housing 330 and fits tightly against the motor housing 330 to improve the sealing of the connection between the air outlet diffuser sleeve 340 and the motor housing 330 and prevent gas from flowing out between the motor housing 330 and the air outlet diffuser sleeve 340.

[0102] Optionally, a shielding grille is provided at the end of the motor housing 330 facing the air outlet diffuser sleeve 340. The shielding grille can protect the drive motor 320 and impeller 310, preventing debris from entering the motor housing 330 through the air outlet 111 and damaging the drive motor 320 and impeller 310. Furthermore, it can also protect the control board 400.

[0103] Combination Figure 7 In some embodiments, the inner wall of the tapered portion is provided with at least one air guide rib 112, which extends along the inner hole extension direction of the tapered portion.

[0104] Optionally, the inner wall of the tapered section is provided with a plurality of air guide ribs 112, which are arranged circumferentially along the tapered section.

[0105] By setting the air guide ribs 112, the airflow entering the converging section can be guided, avoiding the formation of tumble flow or vortex, and improving the blowing effect.

[0106] Optionally, the end of the air guide rib 112 facing away from the air outlet 111 abuts against the flexible lip 341 of the air outlet diffuser sleeve 340, which helps to improve overall stability and reduce noise. When there are multiple air guide ribs 112, multiple air guide ribs 112 abut against the flexible lip 341 of the air outlet diffuser sleeve 340 simultaneously, which helps to prevent the airflow from shifting or deflecting axially in the structure 300.

[0107] See you later Figure 3 In some embodiments of this application, the handle 200 includes a third housing 2010 and a fourth housing 2020, which are disposed opposite to each other and fixedly connected. Both the third housing 2010 and the fourth housing 2020 are fixedly connected to the main body 100. An auxiliary fluid channel 210 is located between the third housing 2010 and the fourth housing 2020, and an auxiliary air vent 270 is located in the third housing 2010 and / or the fourth housing 2020.

[0108] Both the third housing 2010 and the fourth housing 2020 are approximately semi-cylindrical arc-shaped plates. The third housing 2010 and the fourth housing 2020 are arranged opposite to each other and connected to each other, and can be assembled into an approximately cylindrical structure. The cylindrical structure formed by the third housing 2010 and the fourth housing 2020 is easy for the user to hold. Furthermore, the cavity formed inside the third housing 2010 and the fourth housing 2020 creates conditions for the arrangement of the auxiliary fluid channel 210 and the installation of components such as the control board 400.

[0109] The auxiliary air vent 270 is located in the third housing 2010 and / or the fourth housing 2020. Air can enter the third housing 2010 and the fourth housing 2020 through the auxiliary air vent 270 and enter the main fluid duct through the auxiliary fluid channel 210.

[0110] Optionally, when the main body 100 includes a first housing 1010 and a second housing 1020, the first housing 1010 is fixedly connected to the third housing 2010, and the second housing 1020 is fixedly connected to the fourth housing 2020, so that the main body 100 and the handle 200 are combined into a whole, thereby improving structural stability.

[0111] Furthermore, the second housing 1020 and the third housing 2010 and / or the second housing 1020 and the fourth housing 2020 are integrally formed. Preferably, the second housing 1020 and the third housing 2010 are integrally formed, and the second housing 1020 and the fourth housing 2020 are integrally formed. Adopting an integral forming method can improve the structural strength and sealing performance of the connection points between the second housing 1020 and the third housing 2010 and / or the second housing 1020 and the fourth housing 2020, and can reduce production and installation difficulty and cost.

[0112] In some embodiments, the handle 200 further includes a mounting cavity 211 located between the third housing 2010 and the fourth housing 2020. The mounting cavity 211 is used to mount the control board 400. In this embodiment, the mounting cavity 211 can be formed by connecting multiple separate structures or by a single integral molding. The control board 400 is fixed within the mounting cavity 211 by means of, for example, screw fixing or snap-fit ​​fixing. Thus, the mounting cavity 211 can provide fixation and protection for the control board 400 within it.

[0113] Optionally, the mounting cavity 211 is provided with a first interface 2111 communicating with the main fluid duct 170 and a second interface communicating with the auxiliary air outlet 270. The inner cavity of the mounting cavity 211 is constructed as a partial section of the auxiliary fluid channel 210. For example, the mounting cavity 211 is a long, cylindrical structure, and the extending direction of the mounting cavity 211 is parallel to or approximately parallel to the extending direction of the handle 200. The first interface 2111 is located at one end of the mounting cavity 211, and the second interface is located at the other end of the mounting cavity 211. After air enters the handle 200 through the auxiliary air outlet 270, it enters the mounting cavity 211 through the second interface, flows along the mounting cavity 211, cools the control board 400 inside the mounting cavity 211, and then passes through the first interface 2111 into the main fluid duct 170.

[0114] Combination Figure 8 In some embodiments, the handle 200 further includes a pipe 221. A first end of the pipe 221 communicates with the inner cavity of the mounting cavity 211 via a second interface, and a second end of the pipe 221 communicates with the main fluid duct 170. The inner bore of the pipe 221 forms a section of the auxiliary fluid channel 210. Air within the mounting cavity 211 can enter the pipe 221 through the first interface 2111 and flow into the main fluid duct 170 through the pipe 221. The pipe 221 facilitates communication between the mounting cavity 211 and the main fluid duct 170 and improves the sealing of the auxiliary fluid channel 210, preventing air from escaping from other locations. This also improves the cooling effect on the control board 400 and the airflow effect of the blower.

[0115] In one alternative embodiment, a first branch pipe 2211 is provided at the second end of the pipe 221. The first branch pipe 2211 is connected to the main fluid duct 170, and the connection node between the first branch pipe 2211 and the main fluid duct 170 is located on the side of the impeller 310 near the air inlet 161. At least a portion of the air in the pipe 221 flows through the first branch pipe 2211 to the side of the impeller 310 near the air inlet 161, and then continues to flow along the main fluid duct 170 after being accelerated by the impeller 310. The first branch pipe 2211 can guide at least a portion of the air in the pipe 221 into the main fluid duct 170, which not only cools the control board 400, but also, when the air inlet 161 is blocked by foreign objects, can still provide air upstream of the impeller 310 through the first branch pipe 2211, thereby ensuring that the impeller 310 can form an airflow through the drive motor 320, preventing the drive motor 320 from overheating and being damaged, and effectively improving the safety and service life.

[0116] In another alternative embodiment, where the main body 100 includes a duct 110 and the airflow generating structure 300 includes a motor housing 330, an isolation cavity 180 is formed between the duct 110 and the motor housing 330. This isolation cavity 180 can be used for fixing the motor housing 330 and installing the vibration damping component 150. A second branch pipe 2212 is provided at the second end of the pipe 221, and the second branch pipe 2212 passes through the isolation cavity 180 and communicates with the inner cavity of the motor housing 330. At least a portion of the air in the pipe 221 flows into the motor housing 330 through the second branch pipe 2212, mixes with the air inside the motor housing 330, and then flows out through the air outlet 111.

[0117] In another alternative, the second end of pipe 221 is respectively provided with the aforementioned first branch pipe 2211 and second branch pipe 2212. In this embodiment, pipe 221 is a tee pipe, which is connected to the mounting cavity 211, the motor housing 330, and the side of the impeller 310 of the main fluid duct 170 near the air inlet 161. The air in the mounting cavity 211 enters the main fluid duct 170 through two paths.

[0118] In this embodiment, the pipe 221 can adopt any of the three optional schemes mentioned above. Preferably, the pipe 221 adopts a scheme in which the second end is respectively provided with the first branch pipe 2211 and the second branch pipe 2212 mentioned above.

[0119] Optionally, the control board 400 is provided with a MOS transistor 410. The MOS transistor 410 is located in the mounting cavity 211 adjacent to the first interface 2111. As the main heat-generating element, the MOS transistor 410 is located in the mounting cavity 211 adjacent to the first interface 2111, which helps to improve heat dissipation efficiency.

[0120] In some embodiments, the conduit 221 includes a flexible tube configured to allow deformation. In this embodiment, the conduit 221 can be constructed such that a portion of the conduit 221 is a flexible tube and the remainder is a rigid tube, or it can be constructed such that the entire conduit 221 is a flexible tube. Both of these configurations allow the conduit 221 to undergo a certain degree of deformation, meeting the requirements for bending, flattening, and other deformations during installation.

[0121] Optionally, the pipe 221 also includes a support member 230, which is disposed inside the flexible pipe. The support member 230 can support the flexible pipe and can generate a certain elastic deformation. On the one hand, it can prevent the flexible pipe from being excessively squeezed and ensure air circulation at the location of the flexible pipe. On the other hand, it can allow the flexible pipe to deform according to the installation requirements.

[0122] For example, the support member 230 is disposed in the peripheral wall of the flexible tube and is wrapped by the peripheral wall of the flexible tube.

[0123] Optionally, the support member 230 adopts a spiral structure and extends spirally along the flexible tube. For example, the support member 230 can be a metal spring. The inner diameter of the support member 230 is larger than the inner diameter of the flexible tube, and the outer diameter of the support member 230 is smaller than the outer diameter of the flexible tube, so that the flexible tube wraps around the support member 230; or, the outer diameter of the support member 230 is smaller than or equal to the inner diameter of the flexible tube, and the flexible tube is sleeved on the outside of the support member 230.

[0124] Of course, in some other embodiments, the support member 230 can also adopt other structural forms, which can also play a supporting role for the flexible tube. For example, the support member 230 includes multiple rod-shaped or strip-shaped plate-shaped structures, the extension direction of the support member 230 is the same as the extension direction of the flexible tube, and the multiple support members 230 are arranged circumferentially around the center line of the flexible tube.

[0125] See you later Figure 1 In some embodiments, the blower further includes a trigger 240, which is mounted on the handle 200 and electrically connected to a control board 400. The control board 400 is also electrically connected to a drive motor 320. The trigger 240 is used to control the start and stop of the drive motor 320. For example, the trigger 240 is located on the side of the handle 200 facing the air outlet 111 and at the end of the handle 200 closest to the main body 100. When the user holds the handle 200, they can control the drive motor 320 to start by pressing the trigger 240 with their finger and control the drive motor 320 to stop by releasing the trigger 240 to reset it.

[0126] In some embodiments, the blower further includes a latch 250 and an unlock button 260. The latch 250 is mounted on the handle 200 and is used to lock the trigger 240. The unlock button 260 is mounted on the handle 200 and connected to the latch 250. The unlock button 260 is used to unlock the trigger 240.

[0127] The aforementioned latch 250 and unlock button 260 can be switches, locking or unlocking the trigger 240 by opening and closing the circuit between it and the control board 400. Alternatively, they can be mechanical structures such as a sliding pin and a drive mechanism for pulling the pin. When the sliding pin engages with the trigger 240, it locks the trigger 240; when the drive mechanism disengages the sliding pin from the trigger 240, it unlocks the trigger 240. In this embodiment, the structure of the latch 250 and unlock button 260 is not specifically limited; in other words, any structure that enables the locking and unlocking of the trigger 240 is acceptable.

[0128] In some embodiments, in the extending direction of the handle 200, the control plate 400 is located on the side of the trigger 240 opposite to the main body 100, and the auxiliary air vent 270 is located on the side of the control plate 400 opposite to the trigger 240. This creates a certain gap between the auxiliary air vent 270 and the trigger 240, thereby preventing the suction generated at the location of the auxiliary air vent 270 from affecting the user's fingers used to operate the trigger, thus improving user comfort and ease of operation.

[0129] Preferably, the auxiliary air vent 270 is located at the end of the handle 200 away from the main body 100, further reducing the impact of the auxiliary air vent 270 on the user's fingers.

[0130] In some embodiments, the orientation of the auxiliary air vent 270 is opposite to that of the air outlet 111, that is, the opening direction of the auxiliary air vent 270 is opposite to that of the air outlet 111 in the front-to-back direction. This reduces the impact of dust, water, and other debris stirred up by the air outlet 111 when blowing air into the external environment on the auxiliary air vent 270, making the air intake of the auxiliary air vent 270 relatively clean, thereby reducing the possibility of contamination or damage to the control panel 400.

[0131] In some embodiments, the blower further includes at least one of a battery pack 500 and a terminal block (not shown). The battery pack 500 is detachably mounted to the handle 200 and, when connected to the handle 200, is electrically connected to the control board 400. Exemplarily, the battery pack 500 is detachably mounted to the end of the handle 200 opposite to the body 100. The terminal block is mounted to the body 100 or the handle 200 and is electrically connected to the control board 400. The terminal block is used to connect to an external power source. Exemplarily, the terminal block is mounted to the handle 200, and one end of the terminal block passes through the side wall of the handle 200 to be exposed on the outside of the handle 200.

[0132] Preferably, the blower also has the aforementioned battery pack 500 and wiring terminals, so as to allow for flexible selection according to actual usage requirements.

[0133] Optionally, the blower includes a battery pack 500, with an air guide gap formed between the battery pack 500 and the handle 200, and at least one side of the air guide gap is open. An auxiliary air vent 270 is located within the air guide gap, i.e., the auxiliary air vent 270 is disposed on the peripheral wall of the air guide gap. The auxiliary air vent 270 connects to the external environment through the air guide gap, allowing air from the external environment to enter the auxiliary air vent 270. When the battery pack 500 is mounted on the handle 200, the battery pack 500 can shield the auxiliary air vent 270, preventing it from being exposed and reducing the possibility of dust, water, or other debris entering the auxiliary air vent 270.

[0134] Optionally, the battery pack 500 is provided with a port for connecting electrical equipment, including blowers, impact drills, etc. For example, when the battery pack 500 is connected to the handle 200, the port of the battery pack 500 is connected to the corresponding interface of the blower, thereby realizing electrical connection with the control board 400.

[0135] The blower in the above embodiment achieves cooling and protection functions for the control board 400 through the auxiliary fluid channel 210. As an alternative, such as Figure 9 As shown, the blower may also omit the auxiliary fluid channel 210. Specifically, the control board 400 is located within the main fluid duct 170, and the control board 400 is situated on the side of the impeller 310 facing away from the air outlet 111. That is, within the main fluid duct 170, the control board 400 and the impeller 310 are arranged sequentially along the airflow direction. In this configuration, the control board 400 is located on the side of the impeller 310 facing away from the air outlet 111. Dust and other debris entering through the air outlet 111 are unlikely to pass through the impeller 310 and reach the control board 400, thus providing protection for the control board 400. Furthermore, since the blower has a shielding and filtering structure at the air inlet 161, dust and other debris are also unlikely to reach the control board 400 through the air inlet 161. In addition, since the control board 400 is located within the main fluid duct 170, it can utilize the airflow within the main fluid duct 170 for time-dependent cooling. In this embodiment, along the airflow direction within the main fluid duct 170, the drive motor 320 and the control board 400 can both be located upstream of the impeller 310 to minimize airflow loss and ensure that the blower has a large airflow.

[0136] Combination Figure 10 and Figure 11In addition to the structure described above, the blower of this application embodiment may also have other detachable accessories. For example, the blower further includes an air outlet assembly 700, which includes at least one air outlet nozzle adapted to be detachably connected to the main body 100 and communicate with the air outlet.

[0137] Combination Figure 12 and Figure 13 Optionally, the air outlet assembly 700 includes a first air outlet nozzle 710, which is a tubular structure. One end of the nozzle is adapted to be fitted onto the outside of the air outlet 111 to draw out the gas discharged from the air outlet 111, and the other end can serve as an airflow outlet. Preferably, the first air outlet nozzle 710 has an overall approximately conical structure, with the aperture gradually decreasing from the end used to connect with the air outlet 111 to the other end, thereby facilitating the air concentration effect and increasing the airflow velocity.

[0138] In some embodiments, the air outlet assembly 700 further includes a second air outlet nozzle 720, which is rotatably disposed outside the first air outlet nozzle 710. The second air outlet nozzle 720 is configured to rotate between a first angular position and a second angular position. In the first angular position, the second air outlet nozzle 720 communicates with the first air outlet nozzle 710. In the second angular position, the inner hole of the second air outlet nozzle 720 is blocked from the inner hole of the first air outlet nozzle 710.

[0139] Optionally, there may be two or more second air outlet nozzles 720, each rotatably connected to the first air outlet nozzle 710, and each second air outlet nozzle 720 may rotate independently. For example, there may be two second air outlet nozzles 720, positioned on opposite sides of the first air outlet nozzle 710, with their rotation axes perpendicular to the axis of the first air outlet nozzle and parallel to each other.

[0140] In some embodiments, the air outlet assembly 700 further includes a sealing member 730, which is detachably connected to the first air outlet nozzle 710. The sealing member 730 is adapted to switch between a state of blocking the outlet of the first air outlet nozzle 710 and a state of being disconnected from the outlet of the first air outlet nozzle 710. For example, the sealing member 730 includes a soft rubber plug connected to the end of the first air outlet nozzle 710 near the outlet via a flexible chain. When the soft rubber plug is inserted into the outlet of the first air outlet nozzle 710, it blocks the outlet of the first air outlet nozzle 710. By providing the sealing member 730, it is easy to switch between different operating conditions. For example... Figure 12 As shown, when air is not needed from the outlet of the first air outlet nozzle 710, the outlet of the first air outlet nozzle 710 is sealed with a soft rubber plug, and air can then be blown only through the second air outlet nozzle 720; as Figure 13As shown, when air needs to be blown from the outlet of the first air outlet nozzle 710, the soft rubber plug is pulled out, and at least part of the airflow can flow out through the first air outlet nozzle 710. At this time, the second air outlet nozzle 720 can blow air or not.

[0141] Combination Figure 14 In some embodiments, the air outlet assembly 700 further includes a third air outlet nozzle 740, one end of which is adapted to be detachably connected to one end of the air outlet 111 of the main body 100, and the other end of the third air outlet nozzle 740 has two outlets arranged opposite to each other. When the third air outlet nozzle 740 is connected to the main body 100, the airflow from the outlet can be ejected in opposite directions through the two outlets of the third air outlet nozzle 740.

[0142] Optionally, the third air outlet nozzle 740 is configured to be plugged into the first air outlet nozzle 710. This facilitates storage when the air outlet assembly 700 is not needed, and allows for the plugging of the third air outlet nozzle 740 and the first air outlet nozzle 710 when air needs to be blown through the second air outlet nozzle 720. The third air outlet nozzle 740 is then connected to the main body 100 of the blower, with its outlet facing the second air outlet nozzle 720 on the first air outlet nozzle 710. The airflow from the outlet 111 flows through the third air outlet nozzle 740 to the position of the second air outlet nozzle 720, achieving a better airflow effect.

[0143] See you later Figure 10 and Figure 11 In some embodiments, the air outlet assembly 700 further includes a fourth air outlet nozzle 750. One end of the fourth air outlet nozzle 750 is adapted to be detachably connected to one end of the air outlet 111 of the main body 100. The other end of the fourth air outlet nozzle 750 is fan-shaped and has multiple fan-shaped outlets. When the fourth air outlet nozzle 750 is installed at the air outlet 111 of the main body 100, a fan-shaped airflow can be blown out through the multiple fan-shaped air outlets 111, thereby expanding the blowing angle and area.

[0144] In some embodiments, the air outlet assembly 700 further includes an accessory rack 760, to which accessories such as the first air outlet nozzle 710, the third air outlet nozzle 740, and the fourth air outlet nozzle 750 are detachably connected, and the accessory rack 760 is detachably connected to the blower body 100 or the handle 200. For example, the accessory rack 760 has two mounting positions, where the first air outlet nozzle 710 and the third air outlet nozzle 740 are installed in one mounting position after being inserted and fitted together, and the fourth air outlet nozzle 750 is installed in the other mounting position. The accessory rack 760 facilitates the storage of accessories, reduces storage space, and prevents loss.

[0145] It is worth noting that when the first air outlet nozzle 710, the third air outlet nozzle 740, the fourth air outlet nozzle 750, and the accessory bracket 760 are detachably connected to the blower body 100 or the handle 200, the connection method can be plug-in or snap-fit. Furthermore, the first air outlet nozzle 710, the third air outlet nozzle 740, the fourth air outlet nozzle 750, and the accessory bracket 760 can also be detachably connected via, for example, plug-in or snap-fit; no specific limitation is made here. Additionally, it is worth noting that the air outlet assembly 700 may also include other accessories such as flexible tubes and brushes, which will not be listed here.

[0146] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0147] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A blower, characterized by, include: The main body (100) is provided with an air inlet (161), an air outlet (111) and a main fluid duct (170) connecting the air inlet (161) and the air outlet (111). The handle (200) is fixedly connected to the main body (100). The handle (200) is provided with an auxiliary air vent (270) and an auxiliary fluid channel (210). The auxiliary fluid channel (210) connects the auxiliary air vent (270) and the main fluid duct (170). An airflow generating structure (300) is installed on the main body (100) and includes an impeller (310) and a drive motor (320). The drive motor (320) is connected to the impeller (310), and the impeller (310) and the drive motor (320) are located in the main fluid duct (170). A control panel (400) is mounted on the handle (200) and located within the auxiliary fluid channel (210); The battery pack (500) is detachably mounted on one end of the handle (200) away from the main body (100). When the battery pack (500) is connected to the handle (200), the battery pack (500) is electrically connected to the control board (400).

2. The air blower of claim 1, wherein The main body (100) includes: A duct (110) is fitted on the outside of the airflow generating structure (300), and one end of the duct (110) is configured as the air outlet (111). A cylinder cover (120) is connected to one end of the air duct (110) away from the air outlet (111), and the cylinder cover (120) has a through hole that connects the air inlet (161) and the impeller (310); Preferably, the main body (100) further includes: An air inlet cover (160) is located on the side of the cylinder cover (120) away from the air duct (110), and the air inlet cover (160) is configured with the air inlet (161). Preferably, the main body (100) further includes: An air inlet filter (190) is located on the side of the air inlet cover (160) near the air outlet (111); An air inlet filter (191) is installed on the air inlet filter frame (190). Preferably, the main body (100) further includes a first housing (1010) and a second housing (1020) disposed opposite to each other. The first housing (1010) and the second housing (1020) are fixedly connected and both are fixedly connected to the handle (200). The first housing (1010) and the second housing (1020) are fixedly disposed on the outside of the air duct (110), the duct cover (120) and the air inlet filter frame (190). One end of the first housing (1010) and the second housing (1020) is fixedly connected to the air inlet cover (160). Preferably, the main body (100) further includes: The first sealing element (130) is located between the air duct (110) and the duct cover (120); And / or, a second seal (140) is located between the cap (120) and the airflow generating structure (300); And / or, a damping element (150) is located between the air duct (110) and the airflow generating structure (300).

3. The air blower of claim 2, wherein The airflow generating structure (300) also includes: The motor housing (330) is installed inside the air duct (110) and sleeved on the outside of the drive motor (320), and the impeller (310) is located at one end of the motor housing (330); The chamber between the motor housing (330) and the drive motor (320) constitutes a section of the main fluid duct (170); Preferably, the air duct (110) is provided with a tapering section, the inner hole of which tapers from one end near the air inlet (161) to the end away from the air inlet (161); the airflow generating structure (300) further includes: An air diffuser sleeve (340) is installed inside the air duct (110). One end is connected to the end of the motor housing (330) away from the impeller (310), and the other end is provided with a flexible lip (341). The flexible lip (341) abuts against the inner wall of the tapered section. The inner cavity of the air outlet diffuser sleeve (340) forms a section of the main fluid duct (170); Preferably, the inner wall of the tapered portion is provided with at least one air guide rib (112), and the air guide rib (112) extends along the extension direction of the inner hole of the tapered portion; Preferably, the radius of the air outlet (111) is smaller than the outer diameter of the impeller (310); Preferably, the ratio of the radius of the air outlet (111) to the outer diameter of the impeller (310) is less than or equal to 1 / 2.

4. The air blower according to any one of claims 1 to 3, characterized in that, The handle (200) includes a third housing (2010) and a fourth housing (2020), the third housing (2010) and the fourth housing (2020) are disposed opposite to each other and fixedly connected, the third housing (2010) and the fourth housing (2020) are both fixedly connected to the main body (100), the auxiliary fluid channel (210) is located between the third housing (2010) and the fourth housing (2020), and the auxiliary air vent (270) is located in the third housing (2010) and / or the fourth housing (2020). Preferably, the main body (100) includes a first housing (1010) and a second housing (1020), the first housing (1010) being fixedly connected to the third housing (2010), and the second housing (1020) being fixedly connected to the fourth housing (2020); Preferably, the second housing (1020) and the third housing (2010) are integrally formed and / or the second housing (1020) and the fourth housing (2020) are integrally formed.

5. The air blower of claim 4, wherein The handle (200) also includes: The mounting cavity (211) is located between the third housing (2010) and the fourth housing (2020), and the mounting cavity (211) is used to mount the control board (400). Preferably, the mounting cavity (211) is provided with a first interface (2111) communicating with the main fluid duct (170) and a second interface communicating with the auxiliary air outlet (270), and the inner cavity of the mounting cavity (211) is constructed as a section of the auxiliary fluid channel (210).

6. The air blower of claim 5, wherein The handle (200) also includes: Pipe (221), the first end of the pipe (221) is connected to the inner cavity of the mounting cavity (211) through the second interface, the second end of the pipe (221) is connected to the main fluid duct (170), and the inner hole of the pipe (221) is constructed as a part of the auxiliary fluid channel (210); Preferably, the second end of the pipe (221) is provided with a first branch pipe (2211), the first branch pipe (2211) is connected to the main fluid duct (170), and the connection node between the first branch pipe (2211) and the main fluid duct (170) is located on the side of the impeller (310) near the air inlet (161); Preferably, the main body (100) includes a duct (110), and the airflow generating structure (300) includes a motor housing (330), with an isolation cavity (180) formed between the duct (110) and the motor housing (330). The second end of the pipe (221) is provided with a second branch pipe (2212), which passes through the isolation cavity (180) and communicates with the inner cavity of the motor housing (330); Preferably, the pipe (221) comprises a flexible pipe; Preferably, the pipe (221) further includes a support member (230), which is disposed inside the flexible pipe; Preferably, the support member (230) adopts a spiral structure and the support member (230) extends spirally along the flexible tube.

7. The blower of any one of claims 1 to 3, wherein Also includes: A trigger (240) is mounted on a handle (200). The trigger (240) is electrically connected to the control board (400), and the control board (400) is electrically connected to the drive motor (320). The trigger (240) is used to control the start and stop of the drive motor (320). Preferably, it further includes: A latch (250) is mounted on the handle (200) and is used to lock the trigger (240). as well as An unlock button (260) is installed on the handle (200) and connected to the latch (250). The unlock button (260) is used to unlock the trigger (240). Preferably, in the extension direction of the handle (200), the control plate (400) is located on the side of the trigger (240) away from the main body (100), and the auxiliary air vent (270) is located on the side of the control plate (400) away from the trigger (240).

8. The air blower of any one of claims 1 to 3, wherein, The orientation of the auxiliary air vent (270) is opposite to that of the air outlet (111).

9. The air blower of any one of claims 1 to 3, wherein, Also includes: A terminal block is installed on the main body (100) or the handle (200), the terminal block is electrically connected to the control board (400), and the terminal block is used for external power supply.

10. The blower of any one of claims 1 to 3, wherein, A wind-guiding gap is formed between the battery pack (500) and the handle (200), the auxiliary air vent (270) is located within the wind-guiding gap, and the auxiliary air vent (270) is connected to the external environment through the wind-guiding gap; Preferably, the battery pack (500) is provided with a port for connecting electrical equipment.

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