Air duct assembly and blower thereof

Abstract

The air duct assembly comprises a coil holder sleeve, a tubular support, an inner air inlet net and a high-speed motor, one end of the tubular support is provided with an opening, the other end of the tubular support is provided with a honeycomb net, and an inlet of the coil holder sleeve is connected with the opening of the tubular support. The inner air inlet net is of a barrel-shaped structure with one end provided with an opening, and the opening of the inner air inlet net is arranged on the side, away from the coil holder sleeve, of the honeycomb net in a buckled mode. Air flow is divided into a plurality of small air flows twice through the honeycomb net of the tubular support and the meshes distributed on the inner air inlet net, so that the air flow is rectified before entering a high-speed motor, the flow speed and the flow rate of the air flow are stabilized, the influence of turbulent flow is reduced, the air flow entering the high-speed motor is more stable, and the air flow entering the high-speed motor is more uniform. The influence of airflow disturbance on the air inlet of the high-speed motor is reduced, the wind noise is reduced, and the noise reduction effect is achieved.

Description

A duct assembly and its blower Technical Field

[0001] This utility model relates to the field of hair dryers, and in particular to an air duct assembly and the hair dryer thereof. Background Technology

[0002] Hair dryers are a common household appliance that uses a motor to create airflow to dry and style hair. Because the motor causes the airflow to move at high speed inside the hair dryer, unstable airflow or turbulent airflow due to obstructed internal channels can directly lead to excessive noise, thus affecting the user experience. Summary of the Invention

[0003] The purpose of this invention is to provide an air duct assembly and its blower, which aims to solve the technical problem of excessive noise in existing blowers.

[0004] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides an air duct assembly, the air duct assembly including a wire frame sleeve, a tubular support, an inner air inlet mesh, and a high-speed motor. One end of the tubular support has an opening, and the other end is constructed with a honeycomb mesh. The inlet of the wire frame sleeve is connected to the opening of the tubular support. The high-speed motor is disposed inside the tubular support. The inner air inlet mesh is a barrel-shaped structure with an opening at one end, and the opening of the inner air inlet mesh is fastened to the side of the honeycomb mesh away from the wire frame sleeve.

[0005] The internal air intake mesh has multiple mesh openings.

[0006] In some embodiments, the cross-sectional radius of the inner air inlet mesh gradually decreases in the depth direction.

[0007] In some embodiments, the inner air inlet mesh is constructed with annular stiffeners, and the other end of the tubular support is provided with a screw-fitting structure between the annular stiffeners and the two for screw-fitting engagement.

[0008] In some embodiments, the screw-on snap-fit ​​structure includes at least two notches, at least two first extensions, and snap-fit ​​portions. The at least two notches are both constructed on the outer periphery of the annular rib, and the at least two first extensions are constructed circumferentially at the other end of the tubular support and extend toward the inner air inlet mesh. Each of the first extensions is located radially inside the tubular support and is provided with a snap-fit ​​portion. The at least two snap-fit ​​portions are respectively hooked to the annular rib via the at least two notches.

[0009] In some embodiments, the tubular support includes a first half-shell and a second half-shell that snap together to form a tubular structure, the honeycomb mesh being constructed on the side of the first half-shell or the second half-shell facing the inner air inlet mesh.

[0010] In some embodiments, the first half-shell has a second extension on the side facing the second half-shell, the second extension has a first snap-fit ​​protrusion on the radially outer side of the tubular support, the second half-shell has a first lug with a first insertion hole on the side facing the first half-shell, the second extension is located in the first insertion hole, and the first snap-fit ​​protrusion is located on the side of the first lug away from the first half-shell.

[0011] In some embodiments, the second half-shell has a third extension on the side facing the first half-shell, and the third extension has a second snap-fit ​​protrusion located radially outward of the tubular support. The first half-shell has a second lug with a second insertion hole on the side facing the second half-shell, the third extension is located in the second insertion hole, and the second snap-fit ​​protrusion is located on the side of the second lug away from the second half-shell.

[0012] In some embodiments, the end of the wire frame sleeve facing the tubular support has a latch extending out of the tubular support, the latch having a locking hole, and the outer wall of the tubular support having a locking protrusion that engages in the locking hole.

[0013] In some embodiments, the end of the wire frame sleeve away from the tubular support is provided with an elliptical spherical surface, the elliptical spherical surface is spaced apart from the inner wall of the tubular support, and the two are connected by ribs;

[0014] The ellipsoidal surface protrudes towards the side of the tubular support.

[0015] According to another aspect of this application, the present invention also provides a hair dryer, the hair dryer including the air duct assembly as described above, the hair dryer also including a housing having an air inlet and an air outlet, the air duct assembly being disposed inside the housing, the end of the wire frame sleeve away from the tubular support facing the air outlet, the inner air inlet mesh facing the air inlet, and an outer air inlet mesh assembly being disposed at the air inlet.

[0016] Compared with the prior art, the air duct assembly of this utility model has at least the following beneficial effects:

[0017] This utility model discloses an air duct assembly, which includes a wire frame sleeve, a tubular support, an inner air inlet mesh, and a high-speed motor. One end of the tubular support has an opening, and the other end has a honeycomb mesh. The inlet of the wire frame sleeve is connected to the opening of the tubular support to form an air duct. The high-speed motor is housed inside the tubular support, and the motor drives the fan blades to rotate, generating airflow. The inner air inlet mesh of this utility model is a barrel-shaped structure with an opening at one end, and the opening of the inner air inlet mesh is attached to the side of the honeycomb mesh away from the wire frame sleeve. The inner air inlet mesh has multiple mesh holes. This utility model, through the honeycomb mesh of the tubular support and the mesh holes distributed on the inner air inlet mesh, divides the airflow into multiple smaller airflow streams twice, rectifying the airflow before it enters the high-speed motor, stabilizing the airflow velocity and flow rate, reducing the influence of turbulence, making the airflow entering the high-speed motor more stable, reducing the impact of airflow disturbance on the high-speed motor's air inlet, reducing wind noise, and playing a noise reduction role.

[0018] On the other hand, the hair dryer provided by this utility model is manufactured based on the above-mentioned air duct assembly, and its beneficial effects are the same as those of the above-mentioned air duct assembly, which will not be repeated here.

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 is a three-dimensional exploded view of the air duct assembly provided in an embodiment of the present invention;

[0022] Figure 2 is a three-dimensional exploded view of the tubular support and inner air inlet mesh of the air duct assembly provided in the embodiment of this utility model.

[0023] Figure 3 is a three-dimensional planar cross-section of the wire frame sleeve of the air duct assembly provided in this embodiment of the present utility model;

[0024] Figure 4 is a three-dimensional exploded view of the hair dryer provided in an embodiment of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Wire frame sleeve; 11. Locking buckle; 111. Locking hole;

[0027] 2. Tubular support; 21. First half-shell; 211. Honeycomb mesh; 212. First extension; 213. Snap-fit ​​part; 214. Second extension; 215. First snap-fit ​​protrusion; 216. Locking protrusion; 22. Second half-shell; 221. First hanging ear; 2211. First insertion hole;

[0028] 3. Internal air intake grille; 31. Circular stiffening plate; 311. Notch;

[0029] 4. High-speed motor;

[0030] 5. Ellipsoid; 51. Ribs;

[0031] 6. Outer shell;

[0032] 61. External air inlet network assembly. Detailed Implementation

[0033] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0034] In the description of this utility model, it should be clarified that the terms "first," "second," etc., in the specification, claims, and drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "back," "left," "right," "up," "down," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this utility model.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Example 1

[0037] As shown in Figures 1-4, this utility model embodiment provides an air duct assembly, which includes a wire frame sleeve 1, a tubular support 2, an inner air inlet mesh 3, and a high-speed motor 4. One end of the tubular support 2 has an opening, and the other end is constructed with a honeycomb mesh 211. The inlet of the wire frame sleeve 1 is connected to the opening of the tubular support 2. The high-speed motor 4 is disposed inside the tubular support 2. The inner air inlet mesh 3 is a barrel-shaped structure with an opening at one end, and the opening of the inner air inlet mesh 3 is fastened to the side of the honeycomb mesh 211 away from the wire frame sleeve 1.

[0038] The internal air inlet mesh 3 has multiple mesh openings.

[0039] In this embodiment, the air duct assembly includes a wire frame sleeve 1, a tubular support 2, an inner air inlet mesh 3, and a high-speed motor 4. One end of the tubular support 2 has an opening, and the other end has a honeycomb mesh 211. The inlet of the wire frame sleeve 1 is connected to the opening of the tubular support 2, forming an air duct. The high-speed motor 4 is housed inside the tubular support 2. The high-speed motor 4 drives the fan blades to rotate, generating airflow. In this embodiment, the inner air inlet mesh 3 is a barrel-shaped structure with an opening at one end, and the opening of the inner air inlet mesh 3 is attached to the side of the honeycomb mesh 211 away from the wire frame sleeve 1. The inner air inlet mesh 3 has multiple mesh openings. In this embodiment, the airflow is divided into multiple smaller airflow streams twice through the honeycomb mesh 211 of the tubular support 2 and the mesh openings distributed on the inner air inlet mesh 3. This rectifys the airflow before it enters the high-speed motor 4, stabilizing the airflow velocity and flow rate, reducing the influence of turbulence, making the airflow entering the high-speed motor 4 more stable, reducing the impact of airflow disturbance on the air inlet of the high-speed motor 4, and reducing wind noise, thus playing a noise reduction role.

[0040] In some embodiments, the cross-sectional radius of the inner air inlet net 3 gradually decreases in the depth direction.

[0041] In the depth direction of the inner air inlet net 3, the cross-sectional radius of the inner air inlet net 3 gradually decreases. This structure allows the airflow to first pass through the inner air inlet net 3 for convergence and rectification, and then pass through the honeycomb net 211 for further rectification, ultimately making the airflow entering the high-speed motor 4 more stable and further improving the noise reduction effect.

[0042] In some embodiments, the inner air inlet mesh 3 is constructed with annular stiffening plates 31, and a screw-fitting structure is provided between the other end of the tubular support 2 and the annular stiffening plates 31, allowing the two to be screwed together. In this embodiment, the screw-fitting structure between the annular stiffening plates 31 of the inner air inlet mesh 3 and the other end of the tubular support 2 enables rapid assembly of the annular stiffening plates 31 and the tubular support 2, improving assembly efficiency and making disassembly for later maintenance more convenient.

[0043] In some embodiments, the screw-on snap-fit ​​structure includes at least two notches 311, at least two first extensions 212, and snap-fit ​​portions 213. The at least two notches 311 are both located on the outer periphery of the annular rib plate 31. The at least two first extensions 212 are circumferentially located at the other end of the tubular support 2 and extend towards the inner air inlet mesh 3. Each first extension 212, located radially inner to the tubular support 2, has a snap-fit ​​portion 213. At least two of the snap-fit ​​portions 213 are respectively engaged with the annular rib plate 31 via the at least two notches 311. In this embodiment, at least two snap-fit ​​portions 213 are engaged with the annular rib plate 31 via the at least two notches 311, enabling rapid assembly and disassembly of the inner air inlet mesh 3, improving production efficiency and the convenience of subsequent maintenance.

[0044] In some embodiments, the tubular support 2 includes a first half-shell 21 and a second half-shell 22 that snap together to form a tubular structure, and the honeycomb mesh 211 is constructed on the side of the first half-shell 21 or the second half-shell 22 facing the inner air inlet mesh 3.

[0045] In this embodiment, the tubular support 2 is formed by fastening the first half-shell 21 and the second half-shell 22 together to form a tubular structure. The honeycomb mesh 211 is constructed on the side of the first half-shell 21 or the second half-shell 22 facing the inner air inlet mesh 3. The tubular support 2 is assembled in this way, which facilitates the installation of the high-speed motor 4.

[0046] In some embodiments, the first half-shell 21 has a second extension 214 on the side facing the second half-shell 22. The second extension 214 has a first snap-fit ​​protrusion 215 located radially outward of the tubular support 2. The second half-shell 22 has a first lug 221 with a first insertion hole 2211 on the side facing the first half-shell 21. The second extension 214 is located within the first insertion hole 2211, and the first snap-fit ​​protrusion 215 is located on the side of the first lug 221 away from the first half-shell 21. This embodiment achieves quick engagement of the first half-shell 21 and the second half-shell 22 by inserting the second extension 214 into the first insertion hole 2211 and snapping the first snap-fit ​​protrusion 215 onto the side of the first lug 221 away from the first half-shell 21.

[0047] In some embodiments, the second half-shell 22 has a third extension on the side facing the first half-shell 21. The third extension has a second snap-fit ​​protrusion located radially outward of the tubular support 2. The first half-shell 21 has a second lug with a second insertion hole on the side facing the second half-shell 22. The third extension is located within the second insertion hole, and the second snap-fit ​​protrusion is located on the side of the second lug away from the second half-shell 22. This embodiment achieves quick engagement of the first half-shell 21 and the second half-shell 22 by inserting the third extension into the second insertion hole and snapping the second snap-fit ​​protrusion onto the side of the second lug away from the second half-shell 22.

[0048] In some embodiments, the end of the wire frame sleeve 1 facing the tubular support 2 has a latch 11 extending out of the tubular support 2. The latch 11 has a locking hole 111, and the outer wall of the tubular support 2 is constructed with a locking protrusion 216 that engages within the locking hole 111. This embodiment achieves quick connection and disassembly of the wire frame sleeve 1 towards the tubular support 2 by engaging the locking protrusion 216 of the tubular support 2 within the locking hole 111 of the latch 11 on the tubular support 2, thus improving assembly efficiency.

[0049] In some embodiments, an elliptical spherical surface 5 is provided at one end of the wire frame sleeve 1 away from the tubular support 2. The elliptical spherical surface 5 is spaced apart from the inner wall of the tubular support 2, and the two are connected by a rib 51.

[0050] The ellipsoidal surface 5 protrudes towards the side of the tubular support 2. In this embodiment, the ellipsoidal surface 5 guides the airflow at the air outlet, allowing the airflow to flow out smoothly and steadily, further reducing noise.

[0051] Example 2

[0052] This utility model embodiment also provides a hair dryer, which includes the air duct assembly as described above. The hair dryer also includes a housing 6 having an air inlet and an air outlet. The air duct assembly is disposed inside the housing 6. The end of the wire frame sleeve 1 away from the tubular support 2 faces the air outlet. The inner air inlet mesh 3 faces the air inlet. An outer air inlet mesh assembly 61 is provided at the air inlet.

[0053] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A duct assembly, characterized in that, The air duct assembly includes a wire frame sleeve (1), a tubular support (2), an inner air inlet mesh (3), and a high-speed motor (4). The tubular support (2) has an opening at one end and a honeycomb mesh (211) at the other end. The inlet of the wire frame sleeve (1) is connected to the opening of the tubular support (2). The high-speed motor (4) is located inside the tubular support (2). The inner air inlet mesh (3) is a barrel-shaped structure with an opening at one end, and the opening of the inner air inlet mesh (3) is attached to the side of the honeycomb mesh (211) away from the wire frame sleeve (1). The inner air inlet mesh (3) has multiple mesh holes.

2. The air duct assembly according to claim 1, characterized in that, In the depth direction of the inner air inlet net (3), the cross-sectional radius of the inner air inlet net (3) gradually decreases.

3. The air duct assembly according to claim 2, characterized in that, The inner air inlet mesh (3) is constructed with annular stiffeners (31), and the other end of the tubular support (2) is provided with a screw-fitting structure between the annular stiffeners (31) and the two screw-fitting structures.

4. The air duct assembly according to claim 3, characterized in that, The screw-on snap-fit ​​structure includes at least two notches (311), at least two first extensions (212), and snap-fit ​​portions (213). At least two notches (311) are constructed on the outer periphery of the annular rib plate (31), and at least two first extensions (212) are constructed circumferentially at the other end of the tubular support (2) and extend toward the inner air inlet net (3). Each first extension (212) located on the radial inner side of the tubular support (2) is provided with a snap-fit ​​portion (213). At least two of the snap-fit ​​portions (213) are respectively hooked to the annular rib plate (31) via at least two of the notches (311).

5. The air duct assembly according to claim 1, characterized in that, The tubular support (2) includes a first half-shell (21) and a second half-shell (22) that are fastened together to form a tubular structure. The honeycomb mesh (211) is constructed on the side of the first half-shell (21) or the second half-shell (22) facing the inner air inlet mesh (3).

6. The air duct assembly according to claim 5, characterized in that, The first half-shell (21) has a second extension (214) on the side facing the second half-shell (22). The second extension (214) has a first snap-fit ​​protrusion (215) located on the radially outer side of the tubular support (2). The second half-shell (22) has a first lug (221) with a first insertion hole (2211) on the side facing the first half-shell (21). The second extension (214) is located inside the first insertion hole (2211). The first snap-fit ​​protrusion (215) is located on the side of the first lug (221) away from the first half-shell (21).

7. The air duct assembly according to claim 5, characterized in that, The second half-shell (22) has a third extension on the side facing the first half-shell (21). The third extension is provided with a second snap-fit ​​protrusion on the radially outer side of the tubular support (2). The first half-shell (21) has a second lug with a second insertion hole on the side facing the second half-shell (22). The third extension is located in the second insertion hole. The second snap-fit ​​protrusion is located on the side of the second lug away from the second half-shell (22).

8. The air duct assembly according to claim 1, characterized in that, The end of the wire frame sleeve (1) facing the tubular support (2) has a latch (11) extending out of the tubular support (2), the latch (11) has a locking hole (111), and the outer wall of the tubular support (2) is constructed with a locking protrusion (216) that is engaged in the locking hole (111).

9. The air duct assembly according to claim 1, characterized in that, The end of the wire frame sleeve (1) away from the tubular support (2) is provided with an elliptical spherical surface (5), which is spaced apart from the inner wall of the tubular support (2) and connected to it by a rib (51); wherein the elliptical spherical surface (5) protrudes towards the side of the tubular support (2).

10. A hair dryer, characterized in that, The hair dryer includes the air duct assembly as described in any one of claims 1-9, and the hair dryer further includes a housing (6) having an air inlet and an air outlet. The air duct assembly is disposed inside the housing (6). The end of the wire frame sleeve (1) away from the tubular support (2) faces the air outlet. The inner air inlet mesh (3) faces the air inlet. An outer air inlet mesh assembly (61) is provided at the air inlet.

Images