Frequency converter for small ceiling fan
By designing the clamping structure of the metal heat dissipation plate and the mounting strip and the cooling fan air groove in the small ceiling fan inverter, the problem of poor heat dissipation in traditional frequency inverters is solved, and a more stable and efficient heat dissipation effect is achieved.
Patent Information
- Application Number
- CN202421115671.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The heat dissipation effect of traditional small ceiling fan inverters is poor. The thermal pad softens due to the heating of the components, causing the PCB board and the heat dissipation fins to twist and shake, loose after long-term use, and poor heat dissipation.
A frequency converter including a clamped upper case and a lower case formed by clamping is designed, a metal heat dissipation plate is provided with a mounting convex and groove structure, a circuit board is clamped with a mounting strip, and a heat dissipation fin and a mounting stud are used to perform. Fixed and a heat dissipation gas tank and a heat dissipation fan are installed in the housing to improve gas flow.
It achieves better heat dissipation equalization and fixing effects, prevents component damage, and improves the stability and heat dissipation performance of the frequency converter.
Smart Images
Figure CN222301626U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of ceiling fan frequency converters, in particular to a frequency converter for a small ceiling fan. Background Art
[0002] At present, small ceiling fans are often equipped with frequency converters for adjusting the speed of the fan blades. The frequency converter is usually in the form of a box, and a PCB board is configured inside the box for carrying various electronic components.
[0003] The traditional inverter structure is relatively simple, and the heat dissipation effect is achieved by setting a thermal pad on the upper cover of the PCB board and then laying heat dissipation fins. However, during use, the thermal pad will soften due to the heat generated by the components, causing distortion and shaking between the PCB board and the heat dissipation fins in the inverter. After long-term use, the PCB board is prone to loosening, resulting in poor heat dissipation. Summary of the invention
[0004] The purpose of the utility model is to solve the above problems and provide a frequency converter for a small ceiling fan, which has balanced heat dissipation, good fixing effect and is not easy to be damaged.
[0005] The purpose of the utility model is achieved in this way:
[0006] The utility model discloses a frequency converter for a small ceiling fan, comprising an upper shell and a lower shell which are buckled to form an inner cavity, a heat dissipation port which is connected to the inner cavity is provided in the middle of the lower shell, a metal heat dissipation plate and a circuit board are arranged on the heat dissipation port, an edge of the heat dissipation port is formed with a mounting convex edge toward the inner cavity, a mounting groove which is matched with the mounting convex edge is provided at the lower end of the metal heat dissipation plate, heat dissipation fins which extend out of the heat dissipation port are provided in the mounting groove of the metal heat dissipation plate, both ends of the metal heat dissipation plate are extended upward and formed with mounting strips, mounting grooves for plugging in the two ends of the circuit board are provided on the inner sides of the two mounting strips, the upper end of any mounting strip is extended upward to form a heat dissipation side block for dissipating the heat of the circuit board components, a plurality of longitudinally arranged mounting studs are provided in the lower shell, and mounting screw holes which are matched with the mounting studs are provided on the circuit board.
[0007] The utility model is further configured that the upper ends of the upper shell and the lower shell are both provided with heat dissipation grooves, a heat dissipation fan is fixed at the lower end position in the lower shell, and the lower ends of the upper shell and the lower shell are provided with heat dissipation holes for exhaust of the heat dissipation fan.
[0008] The utility model is further configured that a wiring slot is formed at the lower end of the upper shell, and a wiring hole communicating with the inner cavity is opened on one side of the wiring slot.
[0009] The utility model is further configured that the upper end cover of the wiring bar slot is provided with a slot cover, and a wire entry hole is opened below the slot cover.
[0010] The utility model is further configured such that the installation strip, the heat dissipation side guard, the installation groove and the heat dissipation fins are integrally formed.
[0011] The utility model is further configured that a sub-plate is arranged on the lower end surface of the upper shell, and a digital display screen extending out of the upper shell is arranged on the upper end of the sub-plate.
[0012] The utility model is further configured that a boat-shaped switch is provided on one side of the upper shell.
[0013] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:
[0014] 1. The frequency converter provided by the utility model has a metal heat sink which can be provided with heat dissipation fins on one side for heat dissipation, and can also use mounting strips to clamp both sides of the circuit board to prevent twisting up and down. At the same time, mounting studs are further provided on the lower shell body, which is convenient for further reinforcement by means of bolts passing through the mounting screw holes to ensure stability during use.
[0015] 2. The utility model further provides heat dissipation grooves and heat dissipation holes for exhaust of the heat dissipation fan in the lower shell and the upper shell to improve the gas flowability in the inner cavity, making it easier for the inverter to dissipate heat and preventing components from being damaged.
[0016] 3. The wiring row slot provided by the utility model is used to conveniently place the wiring row, and at the same time, a slot cover is provided to help protect the ends of the wires after wiring. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the utility model;
[0018] Figure 2 It is an explosion schematic diagram of the utility model;
[0019] Figure 3 It is a structural schematic diagram of the metal heat sink of the utility model;
[0020] Reference numerals:
[0021] 1-upper housing; 10-inner cavity; 11-heat dissipation slot; 12-heat dissipation hole; 13-sub-board; 14-digital display screen; 15-boat switch;
[0022] 2-lower housing; 20-heat dissipation port; 21-mounting flange; 22-mounting stud; 23-wiring slot; 24-wiring hole; 25-slot cover; 26-wire entry hole;
[0023] 3-metal heat sink; 30-installation groove; 31-heat sink fin; 32-installation bar; 33-installation groove; 34-heat sink side guard;
[0024] 4-circuit board; 40-mounting screw holes;
[0025] 5- Cooling fan. DETAILED DESCRIPTION
[0026] The present invention will be further described below with reference to the accompanying drawings. Figure 1 — Figure 3 :
[0027] A frequency converter for a small ceiling fan, comprising an upper shell 1 and a lower shell 2 which are fastened together to form an inner cavity 10, a heat dissipation port 20 which is connected to the inner cavity 10 is provided in the middle of the lower shell 2, a metal heat dissipation plate 3 and a circuit board 4 are arranged on the heat dissipation port 20, an edge of the heat dissipation port 20 is formed with a mounting convex edge 21 toward the inner cavity, a mounting groove 30 which is matched with the mounting convex edge 21 is provided at the lower end of the metal heat dissipation plate 3, heat dissipation fins 31 which extend out of the heat dissipation port 20 are arranged in the mounting groove 30 of the metal heat dissipation plate 3, both ends of the metal heat dissipation plate 3 are extended upward and formed with mounting strips 32, mounting grooves 33 for plugging in the two ends of the circuit board 4 are provided on the inner sides of the two mounting strips 32, the upper end of any mounting strip 32 is extended upward to form a heat dissipation side block 34 for heat dissipation of circuit board components, a plurality of longitudinally arranged mounting studs 22 are provided in the lower shell 2, and mounting screw holes 40 which are matched with the mounting studs 22 are provided on the circuit board 4.
[0028] In the specific installation process, the circuit board is installed first, and it is inserted into the installation groove 33, and a certain gap is generated between the bottom of the circuit board and the upper end of the metal heat sink 3 to prevent the solder joints at the bottom of the circuit board from contacting the metal heat sink to avoid short circuit. The metal heat sink after the circuit board is installed is inserted into the heat dissipation port 20, and the installation convex edge 21 is inserted into the installation groove 33 during insertion, so as to achieve fixation to prevent the metal heat sink from shaking in the heat dissipation port. At the same time, the heat dissipation fins 31 of the metal heat sink extend out of the heat dissipation port, which improves the heat dissipation performance while achieving a certain limit fixation.
[0029] Furthermore, when the mounting flange 21 is matched with the mounting groove 33, the mounting screw hole 40 on the circuit board corresponds to the mounting stud 22, and the mounting stud 22 is further reinforced by the bolt to prevent shaking.
[0030] In the above structure, the circuit board components are preferentially against the heat dissipation side block 34. Common components such as capacitors or power supply modules are integrally formed with the metal heat dissipation plate 3. The good thermal conductivity of metal is used to achieve balanced heat dissipation of the components. At the same time, the bottom of the circuit board 4 is heated evenly, and the heat dissipation is also more uniform.
[0031] Preferably, the upper ends of the upper shell 1 and the lower shell 2 are both provided with heat dissipation grooves 11, a heat dissipation fan 5 is fixed at the lower end of the lower shell 2, and heat dissipation holes 12 for exhaust of the heat dissipation fan 5 are provided at the lower ends of the upper shell 1 and the lower shell 2.
[0032] In the above structure, in order to improve the heat dissipation performance, a heat dissipation slot 11 is provided at the top to realize air intake, and a heat dissipation hole 12 at the bottom of the heat dissipation fan 5 is provided to realize exhaust. As a whole, the inner cavity 10 is allowed to circulate gas, thereby improving the heat dissipation effect.
[0033] Preferably, a wiring slot 23 is formed at the lower end of the upper shell 1 , and a wiring hole 24 communicating with the inner cavity 10 is formed on one side of the wiring slot 23 .
[0034] Preferably, a slot cover 25 is provided at the upper end of the wiring bar slot 23 , and a wire entry hole 26 is provided below the slot cover 25 .
[0035] In the above structure, a wiring row is arranged in the wiring row slot 23 for wiring terminals, and the wiring row slot 23 is independent of the circuit board 4 and is not easily affected. In addition, since the wiring row in the wiring row slot 23 often has wiring work, a slot cover 25 is arranged to protect the end.
[0036] Preferably, the mounting bar 32, the heat dissipation side guard 34, the mounting groove 33 and the heat dissipation fin 31 are integrally formed. The integral forming improves the thermal conductivity.
[0037] Preferably, the lower end surface of the upper housing 1 is provided with a sub-plate 13, and the upper end of the sub-plate 13 is provided with a digital display screen 14 extending out of the upper housing 1. The digital display screen 14 is used to display the flatness parameters, and in the above-mentioned digital display screen 14, common digital display buttons are used for adjustment.
[0038] Preferably, a boat-shaped switch 15 is provided on one side of the upper housing 1 to switch the circuit board circuit on and off.
[0039] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A frequency converter for a small ceiling fan, characterized in that: The invention comprises an upper shell (1) and a lower shell (2) which are buckled together to form an inner cavity (10); a heat dissipation port (20) which is connected to the inner cavity (10) is provided in the middle of the lower shell (2); a metal heat dissipation plate (3) and a circuit board (4) are arranged on the heat dissipation port (20); a mounting protrusion (21) is formed on the edge of the heat dissipation port (20) toward the inner cavity; a mounting groove (30) which is matched with the mounting protrusion (21) is provided at the lower end of the metal heat dissipation plate (3); and a heat dissipation plate (3) extending out of the heat dissipation port is arranged in the mounting groove (30). (20) has heat dissipation fins (31), both ends of the metal heat dissipation plate (3) extend upward and are formed with mounting strips (32), the inner sides of the two mounting strips (32) are provided with mounting grooves (33) for plugging in the two ends of the circuit board (4), the upper end of any mounting strip (32) extends upward to form a heat dissipation side baffle (34) for dissipating heat from the circuit board components, a plurality of longitudinally arranged mounting studs (22) are arranged in the lower shell (2), and the circuit board (4) is provided with mounting screw holes (40) that are compatible with the mounting studs (22).
2. A frequency converter for a small ceiling fan according to claim 1, characterized in that: The upper ends of the upper shell (1) and the lower shell (2) are both provided with heat dissipation grooves (11), a heat dissipation fan (5) is fixed at the lower end of the lower shell (2), and heat dissipation holes (12) for exhausting the heat dissipation fan (5) are provided at the lower ends of the upper shell (1) and the lower shell (2).
3. The frequency converter for a small ceiling fan according to claim 1, characterized in that: A wiring row slot (23) is formed at the lower end of the upper shell (1), and a wiring hole (24) communicating with the inner cavity (10) is formed on one side of the wiring row slot (23).
4. The frequency converter for a small ceiling fan according to claim 3, characterized in that: The upper end cover of the wiring bar slot (23) is provided with a slot cover (25), and a wire entry hole (26) is opened below the slot cover (25).
5. The frequency converter for a small ceiling fan according to claim 1, characterized in that: The installation strip (32), the heat dissipation side block (34), the installation groove (33) and the heat dissipation fin (31) are integrally formed.
6. The frequency converter for a small ceiling fan according to claim 1, characterized in that: The lower end surface of the upper shell (1) is provided with a sub-plate (13), and the upper end of the sub-plate (13) is provided with a digital display screen (14) extending out of the upper shell (1).
7. The frequency converter for a small ceiling fan according to claim 1, characterized in that: A boat-shaped switch (15) is provided on one side of the upper housing (1).