A coaxial plenum tube fan
By using a detachable sealing ring design and a fully enclosed internal rotor motor in the coaxial booster duct fan, the problem of inconvenient impeller cleaning is solved, the service life of the fan is extended, and the sealing performance is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG LINGGONG ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-06-19
AI Technical Summary
Dust buildup on existing fan impellers affects normal operation, shortens service life, and makes cleaning inconvenient.
Design a coaxial booster duct fan with a detachable sealing ring connecting the housing structure for easy impeller cleaning, and use a fully enclosed internal rotor motor to improve sealing and waterproofing.
It improves impeller cleaning efficiency, extends the service life of the fan, and provides better motor sealing, making it waterproof and moisture-proof.
Smart Images

Figure CN224380134U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fan technology, and more specifically, to a coaxial booster duct fan. Background Technology
[0002] In China, "fan" is a common abbreviation for gas compression and gas conveying machinery. The term "fan" typically includes ventilators, blowers, and wind turbines. Gas compression and gas conveying machinery converts rotational mechanical energy into gas pressure energy and kinetic energy, and then transports the gas outwards.
[0003] Currently, a large amount of dust accumulates on the impeller inside the fan during operation. If not cleaned in time, this will affect the normal operation of the fan and consequently its service life. Therefore, we propose a coaxial booster duct fan. Utility Model Content
[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.
[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a coaxial booster duct fan that is easy to disassemble and clean the impeller, has good support, and a long service life.
[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a coaxial booster duct fan, comprising a first housing and a second housing symmetrically arranged with respect to the first housing, a motor being mounted on one side of the first housing via a mounting bracket, an impeller being connected to the output end of the motor, an air inlet and an air outlet being respectively provided on the first housing and the second housing, a sealing ring being provided at the connection between the first housing and the second housing, and the first housing and the second housing being detachably connected via the sealing ring.
[0007] Preferably, the mounting bracket includes multiple connecting plates circumferentially welded inside the first housing, and the multiple connecting plates are connected to a mounting plate, the mounting plate having a through groove.
[0008] Preferably, the motor is a fully enclosed internal rotor motor.
[0009] Preferably, a mounting ring is fixedly connected to the outer wall of the motor, and the motor is fixedly connected to the mounting plate through the mounting ring.
[0010] Preferably, the bottom of the first housing and the second housing are connected to a base, and the base is connected to mounting ears at both ends.
[0011] Compared with existing technologies, the advantages of this invention are: when the impeller needs cleaning, the first and second housings can be separated simply by removing the sealing ring, allowing for easy cleaning of the impeller, which greatly improves the cleaning efficiency of the impeller and the service life of the fan. The motor adopts a fully enclosed internal rotor motor, which has better sealing performance and is waterproof and moisture-proof. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0013] Figure 2 This is a schematic diagram of the internal structure of the present invention;
[0014] Figure 3 This is a schematic diagram of the first shell structure of this utility model;
[0015] Figure 4 This is a schematic diagram of the structure of the practical motor. Detailed Implementation
[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0017] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.
[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0019] like Figures 1 to 4As shown, this utility model relates to a coaxial booster duct fan, comprising a first housing 1 and a second housing 2 symmetrically arranged with respect to the first housing 1. A motor 3 is mounted on one side of the first housing 1 via a mounting bracket. The mounting bracket includes multiple connecting plates 5 circumferentially welded inside the first housing 1. The multiple connecting plates 5 are connected to a mounting plate 6, which has a through groove 7. An impeller is connected to the output end of the motor 3. An air inlet and an air outlet are respectively provided on the first housing 1 and the second housing 2. A sealing ring 4 is provided at the connection between the first housing 1 and the second housing 2, allowing the first housing 1 and the second housing 2 to be detachably connected via the sealing ring 4. When the impeller needs to be cleaned, simply remove the sealing ring 4 to separate the first housing 1 and the second housing 2 for cleaning, greatly improving the cleaning efficiency of the impeller and the service life of the fan.
[0020] In a further embodiment of this utility model, the motor 3 is a fully enclosed internal rotor motor, which has better sealing performance and can be waterproof and moisture-proof.
[0021] In a further embodiment of this utility model, a mounting ring 8 is fixedly connected to the outer wall of the motor 3, and the motor 3 is fixedly connected to the mounting plate 6 via the mounting ring 8. The fixed connection between the mounting ring 8 and the mounting plate 6 improves the stability of the motor 3.
[0022] In an embodiment of this utility model, a base 9 is further connected to the bottom of the first housing 1 and the second housing 2, and mounting ears are connected to both ends of the base 9 for easy installation and fixation.
[0023] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.
Claims
1. A coaxial plenum tube fan characterized by, It includes a first housing (1) and a second housing (2) symmetrically arranged with the first housing (1). A motor (3) is installed on one side of the first housing (1) by a mounting bracket. An impeller is connected to the output end of the motor (3). An air inlet and an air outlet are respectively opened on the first housing (1) and the second housing (2). A sealing ring (4) is provided at the connection between the first housing (1) and the second housing (2). The first housing (1) and the second housing (2) are detachably connected by the sealing ring (4).
2. A coaxial plenum tube fan according to claim 1, wherein The mounting bracket includes multiple connecting plates (5) circumferentially welded inside the first housing (1), and the multiple connecting plates (5) are connected together to a mounting plate (6), and the mounting plate (6) has a through groove (7).
3. A coaxial plenum tube fan according to claim 1, wherein The motor (3) is a fully enclosed internal rotor motor.
4. A coaxial booster duct fan according to claim 2, characterized in that, The motor (3) has an mounting ring (8) fixedly connected to its outer wall, and the motor (3) is fixedly connected to the mounting plate (6) through the mounting ring (8).
5. A coaxial booster duct fan according to claim 1, characterized in that, The first housing (1) and the second housing (2) are connected to a base (9) at their bottoms, and the base (9) is connected to mounting ears at both ends.