Driver sealing structure of fan
By using a sealing structure between the potting housing and the front cover, the problem of easy damage and poor heat dissipation of the fan drive in high temperature and high humidity environments is solved, thereby improving the sealing and heat dissipation effects and simplifying the assembly process.
Patent Information
- Application Number
- CN202423069112.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Fan drives are easily damaged in high temperature and humidity environments such as dust and water vapor, and have poor heat dissipation. Existing structures are cumbersome to assemble and have poor component consistency.
The sealed structure is assembled with a potting shell and a front cover. Electronic components pass through the positioning notch and are coated with thermal grease. The boss and the sealing layer cooperate to ensure sealing and heat dissipation. The front cover and the front shroud base plate are fixed to form an air inlet, and the airflow is dissipated through the ventilation holes.
Ensuring the airtightness and lifespan of the driver in dusty and humid environments, improving component consistency, simplifying the installation process, and enhancing heat dissipation.
Smart Images
Figure CN223680863U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to motor technical field, concretely is a kind of driver sealing structure of fan. BACKGROUND
[0002] At present, the heat dissipation structure of fan driver includes front end cover, heat dissipation plate and driver, driver is fixed on front end cover by screw locking, the contact surface of heat dissipation plate is coated with heat-conducting silicone grease and then is tightly attached to the bottom surface of electronic element of driver, then heat dissipation plate is fixed by screw.
[0003] In prior art, fan driver structure cannot be filled with glue, electronic element and its pin on driver are exposed to air, when fan is applied to high temperature and high humidity scene such as dust and water vapor, electronic element and driver are more likely to be damaged, affecting the service life of driver. Meanwhile, the assembly process of heat dissipation plate is more complicated, the consistency of parts is poor, and the heat dissipation effect is general. SUMMARY
[0004] The utility model provides a kind of driver sealing structure of fan to the above technical problems, driver is assembled with front end cover by filling glue shell, fan can work normally in the scene of dust and water vapor after filling glue.
[0005] The utility model solves the technical scheme that the above technical problems are adopted: a kind of driver sealing structure of fan, including the filling glue shell installed on the upper surface of front end cover, the filling glue shell is installed with driver, the positioning gap is made on the filling glue shell, and the electronic element in the driver passes through the positioning gap;The boss that is upwardly protruding is made on the upper surface of the front end cover, and the boss is attached with the bottom of the electronic element;The sealing layer extending downward is made in the positioning gap, and the sealing layer is attached with the periphery of the boss;The front end cover is equipped with the front fairing bottom plate below, and the front end cover is fixed and locked with the front fairing bottom plate by screw.
[0006] To optimize the above technical scheme, the utility model further includes the following improved technical solutions.
[0007] The lower surface of the above-mentioned front end cover and the upper surface of the front fairing bottom plate form air inlet for air flow to enter, and the first vent hole is made on the front end cover for air flow to pass through.
[0008] The bottom of the above-mentioned electronic element is coated with heat-conducting silicone grease.
[0009] The thickness interval of the above-mentioned sealing layer is 2.5mm-4mm.
[0010] Compared with the prior art, the drive sealing structure of the fan, the front end cover, the glue pouring shell and the drive are assembled according to corresponding positions, the consistency of parts is increased, and installation is convenient. After glue pouring is completed, the electronic elements and the pins of the drive are isolated from the external environment, the sealing property is guaranteed, and the problem that the parts are damaged in advance due to environmental influence is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0011] Fig. 1 is the sectional view of the embodiment.
[0012] Fig. 2 is the exploded view of the drive, the glue pouring shell and the front end cover.
[0013] Fig. 3 is the sectional view of the drive, the glue pouring shell and the front end cover. DETAILED DESCRIPTION
[0014] The embodiment of the utility model is further described in detail below in combination with the drawings.
[0015] Figs. 1 to 3 As shown in the structural schematic view of the utility model.
[0016] The reference signs therein are as follows: the front end cover 1, the boss 1a, the first vent hole 1b, the glue pouring shell 2, the positioning notch 2a, the sealing layer 2b, the drive 3, the electronic element 4, the front wind cover bottom plate 5, the air inlet 6, the casing 7, the first bearing 8, the motor shaft 9, the mounting column 10, the front wind cover 11, the front wind impeller 12, the stator assembly 13, the rotor assembly 14, the mounting plate 15, the rear wind cover 16, the rear wind impeller 17, the air outlet 18.
[0017] The utility model discloses a drive sealing structure of fan, including installing on the front end cover 1 upper surface glue pouring shell 2, install drive 3 in glue pouring shell 2. The front end cover 1, glue pouring shell 2 and drive 3 three parts are assembled according to the requirement of corresponding position seal, and the fan can work normally under the high temperature and high humidity application scene such as dust and water vapor.
[0018] The positioning notch 2a is formed on the glue pouring shell 2, and the electronic element 4 (rectifier bridge and IPM) in the drive 3 can pass through the positioning notch 2a, and the bottom surface of the motor element (rectifier bridge and IPM) is coated with heat-conducting silicone grease. The upper surface of the front end cover 1 is provided with a boss 1a protruding upward, and the boss 1a is installed in close contact with the bottom of the electronic element 4. Since the material of the front end cover 1 is aluminum, the heat conduction effect is good, and the heat generated by the electronic element 4 can be dissipated through the boss 1a, thereby maximizing the heat dissipation of the drive 3.
[0019] The positioning gap 2a is provided with a downward extending sealing layer 2b, the sealing layer 2b is attached to the periphery of the boss 1a, and the sealing layer 2b prevents the glue from leaking during subsequent glue filling. The thickness of the sealing layer 2b is between 2.5mm and 4mm, and the thickness of the sealing layer 2b in the embodiment is 2.5mm, which ensures the sealing of the structure and reduces the injection cost of the glue-filled shell 2.
[0020] After the front end cover 1, the glue-filled shell 2 and the driver 3 are installed together, the glue is filled, the electronic components 4 and the pins in the driver 3 are insulated by the glue, and the service life of the driver 3 is not affected when the fan works in the dust and water vapor environment.
[0021] The front end cover 1 is provided with a front air cover bottom plate 5, the front end cover 1 is fixedly connected with the front air cover bottom plate 5 through screws, and the lower surface of the front end cover 1 and the upper surface of the front air cover bottom plate 5 form an air inlet 6 for air flow. The upper end of the front end cover 1 is provided with a casing 7, and the front end cover 1 is provided with a first ventilation hole 1b, and the air flow enters the casing 7 through the first ventilation hole 1b.
[0022] The front end cover 1 is provided with a mounting column 10, the motor shaft 9 is rotatably installed in the mounting column 10 through a first bearing 8, the front air cover bottom plate 5 is provided with a front air cover 11, the front air cover 11 is provided with a front air impeller 12, and the front air impeller 12 is fixedly installed at the lower end of the motor shaft 9. When the fan works, the front air impeller 12 rotates with the motor shaft 9.
[0023] The fan further comprises a rotor assembly 14 and a stator assembly 13 installed in the casing 7, the stator assembly 13 is installed on the outer side of the mounting column 10, the stator assembly 13 is provided with the rotor assembly 14 coupled with the stator assembly 13, and the rotor assembly 14 is fixedly connected with the motor shaft 9 through a mounting plate 15.
[0024] The air flow flows through the driver 3 and the stator assembly 13 along the first ventilation hole 1b, and the driver 3 and the stator assembly 13 are effectively cooled, so that the temperature rise of the stator is within a safe range. The mounting plate 15 is provided with a second ventilation hole for air flow, and the air flow in the casing 7 flows out of the second ventilation hole. The casing 7 is provided with a rear air cover 16 at the upper end, the rear air cover 16 is provided with a rear air impeller 17, and the rear air impeller 17 is fixedly installed at the upper end of the motor shaft 9. The rear air cover 16 is provided with an air outlet 18 for air flow, and the rear air impeller 17 rotates to drive the air flow to flow out of the air outlet 18.
[0025] The best embodiment of the utility model has been illustrated, and various changes or modifications made by those skilled in the art will not deviate from the scope of the utility model.
Claims
1. A drive seal structure of a fan, comprising a glue-filled shell (2) installed on the upper surface of a front end cover (1), characterized in that: The glue-filled shell (2) is provided with a driver (3), the glue-filled shell (2) is provided with a positioning gap (2a), and the electronic element (4) in the driver (3) passes through the positioning gap (2a); the upper surface of the front end cover (1) is provided with an upwardly protruding boss (1a), the boss (1a) is attached to the bottom of the electronic element (4); the positioning gap (2a) is provided with a downwardly extending sealing layer (2b), the sealing layer (2b) is attached to the periphery of the boss (1a); the lower surface of the front end cover (1) is provided with a front fairing bottom plate (5), and the front end cover (1) is fixed and locked with the front fairing bottom plate (5) through screws.
2. The seal structure of claim 1, wherein: The lower surface of the front end cover (1) and the upper surface of the front fairing bottom plate (5) form an air inlet (6) for air flow to enter, and the front end cover (1) is provided with a first ventilation hole (1b) for air flow to pass through.
3. A seal for a fan drive according to claim 2, wherein: The bottom of the electronic element (4) is coated with a heat-conducting silicone grease.
4. A seal for a fan drive according to claim 3, wherein: The thickness of the sealing layer (2b) is 2.5mm-4mm.