Air duct assembly and blower thereof

Abstract

An inlet of a coil holder sleeve of the air duct assembly is connected with a tubular support, a support cover is arranged on the side, away from the coil holder sleeve, of the tubular support, a high-speed motor is arranged in the tubular support, and an inner air inlet net is of a barrel-shaped structure with an opening at one end. The open end of the inner air inlet net is buckled to the side, away from the tubular support, of the support cover. By means of the honeycomb net of the support cover and the meshes distributed on the inner air inlet net, airflow is divided into a plurality of strands of small airflow twice, the airflow is rectified before entering a high-speed motor, the airflow is rectified after entering the high-speed motor, the airflow is rectified after entering the high-speed motor, and the airflow is rectified after entering the high-speed motor. The flow speed and the flow of the airflow are stabilized, the influence of turbulent flow is reduced, the airflow entering the high-speed motor is more stable, the influence of airflow disturbance on an 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, a support cover, an inner air inlet mesh, and a high-speed motor. The inlet of the wire frame sleeve is connected to the tubular support, the support cover is disposed on the side of the tubular support away from the wire frame sleeve, the high-speed motor is disposed inside the tubular support, and the inner air inlet mesh is a barrel-shaped structure with an opening at one end, and the opening is fastened to the side of the support cover away from the tubular support.

[0005] The bracket cover is constructed with a honeycomb mesh that allows the opening to communicate with the tubular bracket, and the inner air inlet 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 intake mesh is provided with plastic buckles, and a screw-on snap-fit ​​structure is provided between the plastic buckles and the bracket cover to allow the two to be screwed together.

[0008] In some embodiments, the screw-on snap-fit ​​structure includes at least three first snap-fit ​​portions, at least three first extension portions, and second snap-fit ​​portions. The at least three first snap-fit ​​portions are all constructed on the outer periphery of the plastic buckle. The at least three first extension portions are constructed circumferentially on the bracket cover and extend toward the inner air inlet mesh. Each first extension portion is located radially inside the bracket cover and is constructed with a second snap-fit ​​portion. The at least three first snap-fit ​​portions and the at least three second snap-fit ​​portions are hooked together in a one-to-one correspondence.

[0009] In some embodiments, the screw-on snap-fit ​​structure includes at least three third snap-fit ​​portions, at least three second extension portions, and a fourth snap-fit ​​portion. The at least three fourth snap-fit ​​portions are all constructed on the outer periphery of the bracket cover. The at least three second extension portions are constructed circumferentially on the plastic buckle and extend toward the bracket cover. Each second extension portion is located radially inside the plastic buckle and is constructed with a fourth snap-fit ​​portion. The at least three third snap-fit ​​portions and the fourth snap-fit ​​portions are hooked together one-to-one.

[0010] In some embodiments, the duct assembly further includes a control board disposed between the tubular support and the support cover, and connected to the high-speed motor.

[0011] In some embodiments, the cross-sectional radius of the wire frame sleeve gradually decreases in the air outlet direction.

[0012] 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;

[0013] The ellipsoidal surface protrudes towards the side of the tubular support.

[0014] 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.

[0015] Compared with the prior art, the air duct assembly of this utility model has at least the following beneficial effects:

[0016] This utility model discloses an air duct assembly, which includes a wire frame sleeve, a tubular support, a support cover, an inner air inlet mesh, and a high-speed motor. The inlet of the wire frame sleeve is connected to the tubular support. The support cover is located on the side of the tubular support away from the wire frame sleeve. The high-speed motor is located inside the tubular support. The inner air inlet mesh of this utility model is a barrel-shaped structure with an opening at one end, and the opening end of the inner air inlet mesh is fastened to the side of the support cover away from the tubular support. The support cover has a honeycomb mesh that connects the opening end of the inner air inlet mesh to the tubular support. The inner air inlet mesh has multiple mesh holes. This utility model divides the airflow into multiple smaller airflows twice through the honeycomb mesh of the support cover and the mesh holes distributed on the inner air inlet mesh. This rectifyes the airflow before it enters the high-speed motor, stabilizes the airflow velocity and flow rate, reduces the influence of turbulence, makes the airflow entering the high-speed motor more stable, reduces the impact of airflow disturbance on the air inlet of the high-speed motor, and reduces wind noise, thus playing a role in noise reduction.

[0017] 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.

[0018] 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

[0019] 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.

[0020] Figure 1 is a three-dimensional exploded view of the air duct assembly provided in an embodiment of the present invention;

[0021] Figure 2 is a three-dimensional exploded view of the bracket cover, inner air inlet mesh, and plastic buckle of the air duct assembly provided in this embodiment of the present utility model.

[0022] Figure 3 is a three-dimensional exploded structural diagram of the support cover, inner air inlet mesh, and plastic buckle of the air duct assembly provided in this embodiment of the present invention from another perspective.

[0023] Figure 4 is a three-dimensional planar cut schematic diagram of the wire frame sleeve of the air duct assembly provided in the embodiment of this utility model;

[0024] Figure 5 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;

[0027] 2. Tubular support;

[0028] 3. Bracket cover; 31. Cellular mesh; 32. First extension; 33. Second snap-fit ​​part;

[0029] 4. Internal air intake grille; 41. Circular stiffening plate; 411. Second limiting groove;

[0030] 5. High-speed motor;

[0031] 6. Plastic buckle; 61. First snap-fit ​​part; 62. Second limiting protrusion;

[0032] 7. Control panel;

[0033] 8. Ellipsoid; 81. Ribs;

[0034] 9. Outer casing; 91. External air intake mesh assembly. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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.

[0038] Example 1

[0039] As shown in Figures 1-5, this utility model embodiment provides an air duct assembly, which includes a wire frame sleeve 1, a tubular support 2, a support cover 3, an inner air inlet mesh 4, and a high-speed motor 5. The inlet of the wire frame sleeve 1 is connected to the tubular support 2. The support cover 3 is disposed on the side of the tubular support 2 away from the wire frame sleeve 1. The high-speed motor 5 is disposed inside the tubular support 2. The inner air inlet mesh 4 is a barrel-shaped structure with an opening at one end, and the opening is fastened to the side of the support cover 3 away from the tubular support 2.

[0040] The bracket cover 3 is constructed with a honeycomb mesh 31 that allows the opening to communicate with the tubular bracket 2, and the inner air inlet mesh 4 has multiple mesh holes.

[0041] In this embodiment, the air duct assembly includes a wire frame sleeve 1, a tubular support 2, a support cover 3, an inner air inlet mesh 4, and a high-speed motor 5. The tubular support 2 is a tubular structure with openings at both ends along the axial direction. The inlet of the wire frame sleeve 1 is connected to the tubular support 2 to form an air duct. The inlet of the wire frame sleeve 1 is the airflow inlet. The support cover 3 is located on the side of the tubular support 2 away from the wire frame sleeve 1. The high-speed motor 5 is located inside the tubular support 2. The high-speed motor 5 drives the fan blades to rotate to form airflow. In this embodiment, the inner air inlet mesh 4 is a barrel-shaped structure with an opening at one end, and the opening end of the inner air inlet mesh 4 is fastened... Located on the side of the support cover 3 away from the tubular support 2; the support cover 3 is constructed with a honeycomb mesh 31 that connects one end of the opening of the inner air inlet mesh 4 to the tubular support 2. The inner air inlet mesh 4 has multiple mesh holes. In this embodiment, the airflow is divided into multiple small airflows twice by the honeycomb mesh 31 of the support cover 3 and the mesh holes distributed on the inner air inlet mesh 4, so that the airflow is rectified before entering the high-speed motor 5, stabilizing the airflow velocity and flow rate, reducing the influence of turbulence, making the airflow entering the high-speed motor 5 more stable, reducing the influence of airflow disturbance on the air inlet of the high-speed motor 5, reducing wind noise, and playing a role in noise reduction.

[0042] In some embodiments, the cross-sectional radius of the inner air inlet mesh 4 gradually decreases in the depth direction.

[0043] In the depth direction of the inner air inlet net 4, the cross-sectional radius of the inner air inlet net 4 gradually decreases. This structure allows the airflow to first pass through the inner air inlet net 4 for convergence and rectification, and then pass through the honeycomb net 31 of the support cover 3 for further rectification, ultimately making the airflow entering the high-speed motor 5 more stable and further improving the noise reduction effect.

[0044] In some embodiments, the inner air intake mesh 4 is provided with a plastic buckle 6, and the plastic buckle 6 and the bracket cover 3 are provided with a screw-on snap-fit ​​structure that allows the two to be screwed together.

[0045] In this embodiment, by constructing a plastic buckle 6 on the inner air inlet mesh 4, and by using the screw-on and snap-fit ​​structure between the plastic buckle 6 on the inner air inlet mesh 4 and the bracket cover 3, the two are screwed and snap-fitted together, thereby realizing the rapid assembly of the inner air inlet mesh 4. This structure facilitates disassembly and assembly, improves production efficiency and the convenience of subsequent maintenance.

[0046] The plastic buckle 6 can be integrally molded onto the inner air intake mesh 4, or it can be injection molded onto the inner air intake mesh 4 in a secondary process.

[0047] In some embodiments, the screw-on snap-fit ​​structure includes at least three first snap-fit ​​portions 61, at least three first extension portions 32, and second snap-fit ​​portions 33. The at least three first snap-fit ​​portions 61 are all constructed on the outer periphery of the plastic buckle 6, and the at least three first extension portions 32 are constructed circumferentially on the bracket cover 3 and extend toward the inner air inlet mesh 4. Each first extension portion 32 is located radially inside the bracket cover 3 and has a second snap-fit ​​portion 33. The at least three first snap-fit ​​portions 61 and the at least three first extension portions 32 are hooked together in a one-to-one correspondence.

[0048] In this embodiment, by having at least three first snap-fit ​​parts 61 and at least three first extension parts 32 connected one-to-one with the second snap-fit ​​parts 33, the plastic buckle 6 and the bracket cover 3 can be screwed and snapped together. This structure enables the rapid assembly of the inner air intake mesh 4, making the structure easy to disassemble and assemble, improving production efficiency and the convenience of subsequent maintenance.

[0049] In some embodiments, the screw-on snap-fit ​​structure includes at least three third snap-fit ​​portions, at least three second extension portions, and a fourth snap-fit ​​portion. The at least three fourth snap-fit ​​portions are all constructed on the outer periphery of the bracket cover 3. The at least three second extension portions are constructed circumferentially on the plastic buckle 6 and extend toward the bracket cover 3. Each second extension portion is provided with a fourth snap-fit ​​portion on the radially inner side of the plastic buckle 6. The at least three third snap-fit ​​portions and the at least three fourth snap-fit ​​portions of the second extension portions are hooked together in a one-to-one correspondence.

[0050] In this embodiment, by hooking at least three third snap-fit ​​parts and at least three second extension parts into the fourth snap-fit ​​parts in a one-to-one correspondence, the plastic buckle 6 and the bracket cover 3 can be screwed and snapped together. This structure enables the rapid assembly of the inner air intake net 4, making the structure easy to disassemble and assemble, improving production efficiency and the convenience of subsequent maintenance.

[0051] When the plastic buckle 6 is injection molded onto the inner air intake mesh 4, in order to ensure that the plastic buckle 6 and the inner air intake mesh 4 are tightly bonded, a first limiting protrusion can be constructed on the annular rib plate 41. When the plastic buckle 6 is injection molded onto the inner air intake mesh 4, a first limiting groove that matches the first limiting protrusion will be formed on the plastic buckle 6. In this embodiment, the cooperation between the first limiting protrusion of the annular rib plate 41 and the first limiting groove of the plastic buckle 6 can ensure that the plastic buckle 6 and the inner air intake mesh 4 are tightly bonded.

[0052] When the plastic buckle 6 is injection molded onto the inner air intake mesh 4, a second limiting groove 411 can be constructed on the annular rib plate 41 to ensure a tight fit between the plastic buckle 6 and the inner air intake mesh 4. During the secondary injection molding of the plastic buckle 6 onto the inner air intake mesh 4, a second limiting protrusion 62 that matches the second limiting groove 411 will be formed on the plastic buckle 6. In this embodiment, the tight fit between the plastic buckle 6 and the inner air intake mesh 4 is ensured through the mutual cooperation between the second limiting protrusion 62 on the plastic buckle 6 and the second limiting groove 411 on the annular rib plate 41.

[0053] In some embodiments, the air duct assembly further includes a control board 7, which is disposed between the tubular support 2 and the support cover 3 and connected to the high-speed motor 5. The operation of the high-speed motor 5 is controlled by the control board 7.

[0054] In some embodiments, the cross-sectional radius of the wire frame sleeve 1 gradually decreases in the air outlet direction. In this embodiment, the cross-sectional radius of the wire frame sleeve 1 gradually decreases in the air outlet direction, which can concentrate the airflow and increase the wind force.

[0055] In some embodiments, an elliptical spherical surface 8 is provided at one end of the wire frame sleeve 1 away from the tubular support 2. The elliptical spherical surface 8 is spaced apart from the inner wall of the tubular support 2, and the two are connected by a rib 81.

[0056] The ellipsoidal surface 8 protrudes towards the tubular support 2. In this embodiment, the ellipsoidal surface 8 guides the airflow at the air outlet, allowing the airflow to flow out smoothly and steadily, further reducing noise.

[0057] Example 2

[0058] This utility model embodiment also provides a hair dryer, which includes the air duct assembly of embodiment 1. The hair dryer also includes a housing 9 having an air inlet and an air outlet. The air duct assembly is disposed inside the housing 9. The end of the wire frame sleeve 1 away from the tubular support 2 faces the air outlet. The inner air inlet mesh 4 faces the air inlet. An outer air inlet mesh assembly 91 is disposed at the air inlet.

[0059] 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.

[0060] 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), a support cover (3), an inner air inlet mesh (4), and a high-speed motor (5). The inlet of the wire frame sleeve (1) is connected to the tubular support (2). The support cover (3) is located on the side of the tubular support (2) away from the wire frame sleeve (1). The high-speed motor (5) is located inside the tubular support (2). The inner air inlet mesh (4) is a barrel-shaped structure with an opening at one end, and the opening is fastened to the side of the support cover (3) away from the tubular support (2). The support cover (3) is constructed with a honeycomb mesh (31) that allows the opening to communicate with the tubular support (2). The inner air inlet mesh (4) 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 (4), the cross-sectional radius of the inner air inlet net (4) gradually decreases.

3. The air duct assembly according to claim 2, characterized in that, The inner air inlet mesh (4) is provided with a plastic buckle (6), and the plastic buckle (6) and the bracket cover (3) are provided with a screw-fitting structure that allows the two to be screwed together.

4. The air duct assembly according to claim 3, characterized in that, The screw-on snap-fit ​​structure includes at least three first snap-fit ​​parts (61), at least three first extension parts (32), and second snap-fit ​​parts (33). The at least three first snap-fit ​​parts (61) are all constructed on the outer periphery of the plastic buckle (6). The at least three first extension parts (32) are constructed on the bracket cover (3) in the circumferential direction and extend toward the inner air inlet mesh (4). Each first extension part (32) is located on the radial inner side of the bracket cover (3) and is constructed with a second snap-fit ​​part (33). The at least three first snap-fit ​​parts (61) and the at least three second snap-fit ​​parts (33) are hooked together one by one.

5. The air duct assembly according to claim 3, characterized in that, The screw-on snap-fit ​​structure includes at least three third snap-fit ​​parts, at least three second extension parts, and a fourth snap-fit ​​part. At least three fourth snap-fit ​​parts are constructed on the outer periphery of the bracket cover (3). At least three second extension parts are constructed on the plastic buckle (6) in the circumferential direction and extend toward the bracket cover (3). Each second extension part is located on the radial inner side of the plastic buckle (6) and is constructed with the fourth snap-fit ​​part. At least three third snap-fit ​​parts and the fourth snap-fit ​​parts are hooked together one by one.

6. The air duct assembly according to claim 1, characterized in that, The air duct assembly also includes a control board (7), which is disposed between the tubular support (2) and the support cover (3) and is connected to the high-speed motor (5).

7. The air duct assembly according to claim 1, characterized in that, In the air outlet direction, the cross-sectional radius of the wire frame sleeve (1) gradually decreases.

8. 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 (8), which is spaced apart from the inner wall of the tubular support (2) and connected to it by a rib (81); wherein the elliptical spherical surface (8) protrudes towards the side of the tubular support (2).

9. A hair dryer, characterized in that, The hair dryer includes the air duct assembly as described in any one of claims 1-8, and the hair dryer further includes a housing (9) having an air inlet and an air outlet. The air duct assembly is disposed inside the housing (9). The end of the wire frame sleeve (1) away from the tubular support (2) faces the air outlet. The inner air inlet mesh (4) faces the air inlet. An outer air inlet mesh assembly (91) is provided at the air inlet.

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