Small pipeline fan easy to assemble

Abstract

A small pipeline fan easy to assemble comprises a shell, a fan assembly and a main control board. The shell comprises a central shell body and two air port connecting pieces, the central shell body is a hollow cylinder with openings in the two ends, the air port connecting pieces are provided with air ports, the two air port connecting pieces are installed at the openings in the two ends of the central shell body respectively, and the air port connecting pieces and the central shell body are detachably connected through spinning buckle structures; a main control cavity is formed in the outer wall of the central shell, the main control board is installed in the main control cavity, the fan assembly is installed in the hollow part of the central shell, and the main control board is electrically connected with the fan assembly. According to the pipeline fan, the tuyere connecting piece and the central shell are detachably connected through the spinning buckle structure, the assembly process of the pipeline fan is simplified, and a user or an installation person can easily complete assembly without complex tools and professional techniques.

Description

Technical Field

[0001] This utility model relates to the field of ventilation and purification technology, and in particular to a small duct fan that is easy to assemble. Background Technology

[0002] Duct fans are primarily used for indoor ventilation and air exchange, characterized by large air volume and high air pressure. Currently, most duct fans on the market use internal rotor AC motors, with the impeller mounted on the motor shaft. Under high-speed operation, these fans generate significant wind noise, vibration, and high-frequency electromagnetic noise. These fans are mainly used in industrial applications. Applying them to home ventilation presents disadvantages such as high energy consumption, cumbersome installation, and high noise and air velocity. Furthermore, industrial duct fans are generally large and complex, making them difficult to assemble and directly apply in home settings. Utility Model Content

[0003] In view of the problems raised in the background technology, the purpose of this utility model is to propose a small duct fan that is easy to assemble, which solves the problem that the existing duct fans have a complex structure and are difficult to assemble.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A small, easily assembled duct fan, comprising a housing, a fan assembly, and a main control board;

[0006] The outer casing includes a central shell and two air vent connectors. The central shell is a hollow column with openings at both ends. The air vent connectors are provided with air vents. The two air vent connectors are respectively installed at the two openings at both ends of the central shell. The air vent connectors and the central shell are detachably connected by a snap-fit ​​structure.

[0007] The outer wall of the central housing is provided with a main control cavity, the main control board is installed in the main control cavity, the fan assembly is installed in the hollow part of the central housing, and the main control board is electrically connected to the fan assembly.

[0008] Preferably, the snap fastener structure includes a sliding groove and a snap fastener;

[0009] The air outlet connector includes an end shell and a first ring body. The first ring body is disposed at one end of the end shell. The outer side wall of the first ring body is provided with a plurality of the spiral grooves. The spiral groove includes an alignment groove and a locking groove. The alignment groove extends from the end away from the end shell along the width direction of the first ring body. The locking groove is located at the end of the alignment groove close to the end shell and communicates with the alignment groove.

[0010] The inner walls at both ends of the central housing are provided with a number of the aforementioned swivels, the number of which is equal to the number of the swivel grooves.

[0011] Preferably, a sealing ring is provided at the connection between the air outlet connector and the central housing.

[0012] Preferably, the fan assembly includes a fan blade, a magnetic ring, a motor shaft, and a stator assembly. The magnetic ring is disposed on one side of the fan blade, the motor shaft passes through the stator assembly and is connected to the fan, and the magnetic ring is sleeved on the outside of the stator assembly.

[0013] The central housing has mounting columns inside, and the stator assembly is mounted on the mounting columns.

[0014] Preferably, the fan blade and the magnetic ring are integrally injection molded.

[0015] Preferably, the interior of the central housing is provided with a plurality of air guide vanes, which are arranged at intervals. One end of each air guide vane is connected to the inner wall of the central housing, and the other end of each air guide vane is connected to the outer peripheral wall of the mounting column located at the center.

[0016] Preferably, it further includes a mounting part and a mounting base, the mounting part being integrally formed on the outer side wall of the central housing, and the mounting base being detachably connected to the mounting part.

[0017] Preferably, the mounting part is formed by two mounting plates and two enclosure plates. The two mounting plates are arranged opposite to each other and parallel to each other. The two enclosure plates are arranged opposite to each other, and the two ends of the enclosure plates are respectively connected to the two mounting plates.

[0018] The mounting base includes a base plate and two mounting parts. The mounting parts are located on the top surface of the base plate. Each mounting part includes a vertical support plate and a horizontal mounting plate. The lower end of the vertical support plate is connected to the base plate, and the upper end of the vertical support plate is connected to one end of the horizontal mounting plate. The vertical cross-section of the mounting part is inverted L-shaped, and the horizontal mounting plates of the two mounting parts are arranged opposite to each other.

[0019] The mounting plate has a mounting groove on its outer side, which extends along the length of the mounting plate. Both ends of the mounting groove penetrate the mounting plate, and the transverse assembly plate is assembled and connected to the mounting groove.

[0020] Preferably, the outer side of the mounting plate is provided with a first mounting hole, and the vertical support plate is provided with a second mounting hole. The first mounting hole and the second mounting hole are correspondingly provided, and the first mounting hole and the second mounting hole are connected by fasteners.

[0021] Preferably, the main control cavity is formed inside the mounting portion.

[0022] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0023] The vent connectors are detachably connected to the central housing via a snap-lock mechanism, simplifying the assembly process of the duct fan and allowing users or installers to easily complete the assembly without complicated tools or professional skills. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0025] Figure 2 This is an exploded view of one embodiment of the present invention;

[0026] Figure 3 This is an exploded view of another embodiment of the present invention;

[0027] Figure 4 This is an assembly diagram of the central housing and the air outlet connection components;

[0028] Figure 5 This is a structural diagram of the fan assembly.

[0029] The components include: outer shell 1, central shell 11, mounting column 111, air guide vane 112, air outlet connector 12, end shell 121, first ring body 122, main control cavity 13, air outlet 10, fan assembly 2, fan blade 21, magnetic ring 22, motor shaft 23, stator assembly 24, main control board 3, swivel structure 4, swivel groove 41, alignment groove 411, slot 412, swivel 42, mounting part 51, mounting plate 511, mounting groove 5111, first mounting hole 5112, enclosure plate 512, mounting base 52, bottom plate 521, assembly part 522, vertical support plate 5221, horizontal assembly plate 5222, second mounting hole 5223, and fastener 53. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first," "second," and "third" are used 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 as "first," "second," and "third" may explicitly or implicitly include one or more of that feature.

[0033] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The following is in conjunction with the appendix Figures 1 to 5 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0035] A small, easily assembled duct fan includes a housing 1, a fan assembly 2, and a main control board 3;

[0036] The outer shell 1 includes a central shell 11 and two air vent connectors 12. The central shell 11 is a hollow column with openings at both ends. The air vent connectors 12 are provided with air vents 10. The two air vent connectors 12 are respectively installed at the openings at both ends of the central shell 11. The air vent connectors 12 and the central shell 11 are detachably connected by a snap fastener structure 4.

[0037] The outer wall of the central housing 11 is provided with a main control cavity 13, the main control board 3 is installed in the main control cavity 13, the fan assembly 2 is installed in the hollow part of the central housing 11, and the main control board 3 is electrically connected to the fan assembly 2.

[0038] This utility model discloses a duct fan comprising a housing 1, a fan assembly 2, and a main control board 3. The main control board 3 controls the start and stop of the fan assembly 2. The housing 1 consists of two air outlet connectors 12 and a central housing 11. The fan assembly 2 is installed inside the hollow interior of the central housing 11. The two air outlet connectors 12, each with an air outlet 10, are located at both ends of the central housing 11, serving as the air inlet and outlet of the duct fan. The air outlet connectors 12 are detachably connected to the central housing 11 via a snap-fit ​​structure 4. This design greatly simplifies the assembly of the duct fan components and the assembly process, allowing users or installers to easily complete the assembly without complex tools or professional skills. This not only reduces installation costs but also improves installation efficiency, making it particularly suitable for home users to install or maintain themselves. Furthermore, the fan assembly 2 is located inside the central housing 11, while the main control board 3 is located in the main control cavity 13 formed outside the central housing 11, making the functional areas relatively independent and more convenient for maintenance or upgrades. Users can easily disassemble relevant components for inspection, cleaning, or replacement, extending the service life of the duct fan and reducing maintenance costs.

[0039] Furthermore, the swivel structure 4 includes a swivel groove 41 and a swivel 42;

[0040] The air outlet connector 12 includes an end shell 121 and a first ring body 122. The first ring body 122 is disposed at one end of the end shell 121. The outer side wall of the first ring body 122 is provided with a plurality of the spiral grooves 41. The spiral grooves 41 include alignment grooves 411 and locking grooves 412. The alignment grooves 411 extend from the end away from the end shell 121 along the width direction of the first ring body 122. The locking grooves 412 are located at the end of the alignment grooves 411 close to the end shell 121 and communicate with the alignment grooves 411.

[0041] The inner walls at both ends of the central housing 11 are provided with a plurality of the aforementioned swivel buckles 42, the number of which is equal to the number of the spiral grooves 41.

[0042] A secure connection between the air vent connector 12 and the central housing 11 is achieved through a screw-lock structure 4, including a sliding groove 41 and a screw-lock 42. The sliding groove 41 is located on the air vent connector 12, and the screw-lock 42 is located on the central housing 11. During assembly, the first ring 122 of the air vent connector 12 extends into the interior of the central housing 11, and the screw-lock 42 is aligned with the alignment groove 411, allowing the screw-lock 42 to slide relative to the alignment groove. When the screw-lock 42 slides to the point where the locking groove 412 communicates with the alignment groove 411, the air vent connector 12 is rotated along its central axis, causing the screw-lock 42 to screw into the alignment groove 411 and ultimately be locked in place by the locking groove 412, thus achieving a screw-lock assembly between the air vent connector 12 and the central housing 11. Because the assembly process of this screw-lock structure 4 involves relative sliding and relative rotation operations of the two structures, this not only ensures the firmness of the connection but also prevents loosening or detachment due to vibration or external forces during use. This design avoids the tedious steps of finding the right tools and aligning the screw holes required in traditional screw fixing methods, greatly improving assembly efficiency.

[0043] Furthermore, a sealing ring is provided at the connection between the air vent connector 12 and the central housing 11.

[0044] Adding a sealing ring at the connection between the air outlet connector 12 and the central housing 11 can significantly improve the overall sealing performance of the duct fan. The sealing ring effectively prevents gas leakage from the connection during operation, thus ensuring the normal operation and high efficiency of the duct fan. Furthermore, the sealing ring not only provides a seal but also reduces the gap between the air outlet connector 12 and the central housing 11 to some extent, thereby reducing noise and vibration during operation. This helps improve the user experience, especially in noise- and vibration-sensitive environments such as residential areas and hospitals.

[0045] Furthermore, the fan assembly 2 includes a fan blade 21, a magnetic ring 22, a motor shaft 23, and a stator assembly 24. The magnetic ring 22 is disposed on one side of the fan blade 21, the motor shaft 23 passes through the stator assembly 24 and is connected to the fan blade 21, and the magnetic ring 22 is sleeved on the outside of the stator assembly 24.

[0046] The interior of the central housing 11 is provided with a mounting post 111, and the stator assembly 24 is mounted on the mounting post 111.

[0047] By placing the magnetic ring 22 on one side of the fan blade 21 and fitting it around the outside of the stator assembly 24, which is then directly mounted on the mounting post 111 inside the central housing 11, the assembly process of the fan assembly 2 is simplified. Users or installers can easily complete the assembly without additional fasteners or tools, improving assembly efficiency. This design of the fan assembly 2 utilizes the principle of a brushless DC motor, effectively reducing mechanical friction and losses, thereby improving the operating efficiency of the fan assembly 2. Compared to traditional brushed motors, brushless motors have higher energy conversion efficiency and a longer service life.

[0048] The brushless DC motor operates relatively smoothly, effectively reducing noise caused by mechanical friction and vibration. Furthermore, by optimizing the design of the fan blades 21 and selecting appropriate materials, noise generated during airflow can be further reduced, providing users with a quieter indoor environment.

[0049] Because fan assembly 2 is designed to be relatively independent and easy to disassemble, users can operate it more conveniently when maintenance or upgrades are needed. This reduces maintenance costs and provides users with more options and flexibility.

[0050] Furthermore, the fan blade 21 and the magnetic ring 22 are integrally injection molded.

[0051] The integrally injection-molded fan blade 21 and magnetic ring 22 have no seams or connectors, making the structure more robust and able to withstand greater wind pressure and mechanical stress. This improves the stability and durability of the duct fan and extends its service life.

[0052] Furthermore, the interior of the central housing 11 is provided with a plurality of air guide vanes 112, which are arranged at intervals. One end of each air guide vane 112 is connected to the inner wall of the central housing 11, and the other end of each air guide vane 112 is connected to the outer peripheral wall of the mounting post 111 located at the center.

[0053] By incorporating several guide vanes 112 within the central housing 11, the airflow distribution can be guided and optimized. The design of the guide vanes 112 ensures more uniform airflow as it passes through the duct fan, reducing eddies and turbulence, thereby improving the ventilation efficiency and air exchange effect of the duct fan. Furthermore, the spacing of the guide vanes 112 and their connection to the central housing 11 and mounting columns 111 contribute to enhancing the fan's air pressure. When airflow passes through the guide vanes 112, it is guided and accelerated, increasing the air pressure at the outlet and enabling the fan to more effectively drive airflow. This optimized airflow distribution and enhanced air pressure allow the duct fan to utilize electrical energy more efficiently during operation, reducing energy consumption and improving its energy efficiency ratio, meeting the energy-saving and environmental protection requirements of modern homes.

[0054] The placement of the guide vanes 112 not only optimizes airflow but also enhances the structural stability of the central housing 11. Like ribs, they support the interior of the central housing 11, reducing vibration and deformation caused by airflow impact and improving the overall stability and durability of the fan.

[0055] Furthermore, it also includes a mounting part 51 and a mounting base 52, wherein the mounting part 51 is integrally formed on the outer side wall of the central housing 11, and the mounting base 52 is detachably connected to the mounting part 51.

[0056] The mounting section 51 is integrally formed on the outer wall of the central housing 11, providing a convenient interface for the installation of the fan. The detachable connection between the mounting base 52 and the mounting section 51, such as screw fixing or snap-fit ​​connection, allows the duct fan to be easily installed in different positions or on brackets, improving the flexibility and adaptability of the installation.

[0057] Thanks to the design of the mounting section 51 and the mounting base 52, users do not need to drill holes in the central housing 11 or perform other complex installation operations. They only need to first install the mounting base 52 in a designated position, and then install the mounting section 51 onto the mounting base 52, greatly simplifying the installation process and saving time and effort. Specifically, the design of the mounting section 51 and the mounting base 52 allows the duct fan to adapt to various installation environments. Whether it's a wall, ceiling, or other supporting structure, users can choose the appropriate installation method and location according to their actual needs. This design improves the versatility and applicability of the duct fan.

[0058] Furthermore, the mounting part 51 is formed by two mounting plates 511 and two enclosure plates 512. The two mounting plates 511 are arranged opposite to each other and parallel to each other. The two enclosure plates 512 are arranged opposite to each other, and the two ends of the enclosure plates 512 are respectively connected to the two mounting plates 511.

[0059] The mounting base 52 includes a base plate 521 and two mounting parts 522. The mounting parts 522 are disposed on the top surface of the base plate 521. Each mounting part 522 includes a vertical support plate 5221 and a horizontal mounting plate 5222. The lower end of the vertical support plate 5221 is connected to the base plate 521, and the upper end of the vertical support plate 5221 is connected to one end of the horizontal mounting plate 5222. The vertical cross section of the mounting part 522 is inverted L-shaped, and the horizontal mounting plates 5222 of the two mounting parts 522 are arranged opposite to each other.

[0060] The mounting plate 511 has a mounting groove 5111 on its outer side. The mounting groove 5111 extends along the length of the mounting plate 511. Both ends of the mounting groove 5111 pass through the mounting plate 511. The transverse assembly plate 5222 is assembled and connected to the mounting groove 5111.

[0061] The mounting section 51 is enclosed by two opposing and parallel mounting plates 511 and two opposing enclosure plates 512, forming a stable mounting frame. This design not only enhances the structural strength of the mounting section 51, but also makes the duct fan more stable during installation, reducing the risk of loosening or falling off due to vibration or external forces.

[0062] Specifically, during assembly, the base plate 521 of the mounting base 52 is first installed in a fixed position; then, the slots on one side of the mounting grooves 5111 at both ends of the mounting part 51 of the duct fan are aligned with the two transverse mounting plates 5222 of the mounting base 52, and the transverse mounting plates 5222 are slid relative to each other in the mounting grooves 5111 by pushing the duct fan until the transverse mounting plates 5222 are completely locked in the mounting grooves 5111.

[0063] Furthermore, the outer side of the mounting plate 511 is provided with a first mounting hole 5112, and the vertical support plate 5221 is provided with a second mounting hole 5223. The first mounting hole 5112 and the second mounting hole 5223 are correspondingly provided, and the first mounting hole 5112 and the second mounting hole 5223 are connected by fasteners 53.

[0064] By providing a first mounting hole 5112 on the outer side of the first mounting plate 511 and a second mounting hole 5223 on the vertical support plate 5221, and firmly connecting the two using fasteners 53 (such as screws, nuts, etc.), the connection strength between the mounting part 51 and the mounting base 52 can be significantly enhanced. By adding mounting holes and using fasteners 53 for connection, the overall strength and durability of the fan structure can be further strengthened, enabling the duct fan to better withstand various external forces and vibrations during long-term use, thereby extending its service life. Furthermore, this design makes the duct fan more stable after installation, reducing the risk of loosening or detachment due to vibration or external forces, thus improving the operating efficiency and safety of the duct fan.

[0065] Furthermore, the main control cavity 13 is formed inside the mounting portion 51.

[0066] The main control chamber 13 is built into the mounting section 51, reducing the overall external space occupied by the duct fan and making the fan structure more compact. The compact structural design helps to reduce the size and weight of the duct fan, improving its portability and ease of installation.

[0067] Concealing the main control chamber 13 within the mounting section 51 reduces cluttered wiring and components on the outside of the duct fan, resulting in a cleaner and more aesthetically pleasing appearance. The built-in main control chamber 13 provides better protection, preventing external objects or moisture from directly contacting the main control circuitry, thereby reducing the risk of short circuits or damage.

[0068] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A small, easily assembled duct fan, characterized in that: Includes the casing, fan assembly, and main control board; The outer casing includes a central shell and two air vent connectors. The central shell is a hollow column with openings at both ends. The air vent connectors are provided with air vents. The two air vent connectors are respectively installed at the two openings at both ends of the central shell. The air vent connectors and the central shell are detachably connected by a snap-fit ​​structure. The outer wall of the central housing is provided with a main control cavity, the main control board is installed in the main control cavity, the fan assembly is installed in the hollow part of the central housing, and the main control board is electrically connected to the fan assembly.

2. The easily assembled small duct fan according to claim 1, characterized in that: The swivel structure includes a swivel groove and a swivel. The air outlet connector includes an end shell and a first ring body. The first ring body is disposed at one end of the end shell. The outer side wall of the first ring body is provided with a plurality of the spiral grooves. The spiral groove includes an alignment groove and a locking groove. The alignment groove extends from the end away from the end shell along the width direction of the first ring body. The locking groove is located at the end of the alignment groove close to the end shell and communicates with the alignment groove. The inner walls at both ends of the central housing are provided with a number of the aforementioned swivels, the number of which is equal to the number of the swivel grooves.

3. The easily assembled small duct fan according to claim 2, characterized in that: A sealing ring is also provided at the connection between the air outlet connector and the central housing.

4. The easily assembled small duct fan according to claim 3, characterized in that: The fan assembly includes a fan blade, a magnetic ring, a motor shaft, and a stator assembly. The magnetic ring is located on one side of the fan blade, the motor shaft passes through the stator assembly and is connected to the fan, and the magnetic ring is sleeved on the outside of the stator assembly. The central housing has mounting columns inside, and the stator assembly is mounted on the mounting columns.

5. The easily assembled small duct fan according to claim 4, characterized in that: The fan blade and the magnetic ring are integrally injection molded.

6. The easily assembled small duct fan according to claim 5, characterized in that: The interior of the central housing is provided with a plurality of air guide vanes, which are arranged at intervals. One end of each air guide vane is connected to the inner wall of the central housing, and the other end of each air guide vane is connected to the outer peripheral wall of the mounting column located at the center.

7. The easily assembled small duct fan according to claim 1, characterized in that: It also includes a mounting part and a mounting base, the mounting part being integrally formed on the outer side wall of the central housing, and the mounting base being detachably connected to the mounting part.

8. The easily assembled small duct fan according to claim 7, characterized in that: The mounting section is formed by two mounting plates and two enclosure plates. The two mounting plates are arranged opposite each other and parallel to each other. The two enclosure plates are arranged opposite each other, and the two ends of the enclosure plates are respectively connected to the two mounting plates. The mounting base includes a base plate and two mounting parts. The mounting parts are located on the top surface of the base plate. Each mounting part includes a vertical support plate and a horizontal mounting plate. The lower end of the vertical support plate is connected to the base plate, and the upper end of the vertical support plate is connected to one end of the horizontal mounting plate. The vertical cross-section of the mounting part is inverted L-shaped, and the horizontal mounting plates of the two mounting parts are arranged opposite to each other. The mounting plate has a mounting groove on its outer side, which extends along the length of the mounting plate. Both ends of the mounting groove penetrate the mounting plate, and the transverse assembly plate is assembled and connected to the mounting groove.

9. A small, easily assembled duct fan according to claim 8, characterized in that: The mounting plate has a first mounting hole on its outer side, and the vertical support plate has a second mounting hole. The first mounting hole and the second mounting hole are correspondingly provided, and the first mounting hole and the second mounting hole are connected by fasteners.

10. A small, easily assembled duct fan according to claim 9, characterized in that: The main control cavity is formed inside the mounting portion.

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