Compact PFC circuit welding machine case
By setting the PFC circuit board with the main circuit board in the welding machine chassis, using the cooling fan and heat sink to achieve heat dissipation, the volume and cost increase caused by dispersed layout is solved, and the design of the compact welding machine chassis is realized, reducing the Production cost.
Patent Information
- Application Number
- CN202421040516.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The dispersed layout of PFC circuits in existing welding machine chassis leads to an increase in radiators, increasing costs and chassis volume, and thus making the chassis inconvenient for movement and storage.
The compact PFC circuit welding machine chassis design is adopted, where the PFC circuit board is arranged opposite to the main circuit board, and the radiator is sandwiched between the two, and the heat dissipation is achieved using a cooling fan and a heat sink, avoiding the increase of additional radiators.
The chassis structure is compact, reducing costs, and ensuring heat dissipation, making the chassis easier to move and store.
Smart Images
Figure CN222283569U_ABST
Abstract
Description
[Technical field]
[0001] The utility model relates to the technical field of welding machines, in particular to the technical field of welding machine chassis. [Background technology]
[0002] In order to improve the power factor, some welding machine chassis will use PFC circuits. The existing welding chassis have decentralized PFC circuits, which require the addition of radiators to achieve heat dissipation of this part of the circuit. The addition of radiators will inevitably lead to increased costs. At the same time, the decentralized layout of the PFC circuit will also lead to an increase in the size of the chassis, further increasing the production cost. At the same time, an overly large chassis will make it inconvenient to move and store the chassis. [Contents of the utility model]
[0003] The purpose of the utility model is to solve the problems in the prior art and to provide a compact PFC circuit welding machine chassis, which can make the chassis compact and convenient for movement and storage.
[0004] To achieve the above-mentioned purpose, the utility model proposes a compact PFC circuit welding machine chassis, comprising a chassis, a main circuit board, a PFC circuit board, a radiator, and a cooling fan. A main circuit board is installed inside the chassis, and a plurality of radiators are installed on the main circuit board. A PFC circuit board is provided inside the chassis, and the PFC circuit board and the main circuit board are arranged opposite to each other. The radiator is sandwiched between the main circuit board and the PFC circuit board, and the PFC circuit board is close to the radiator. A cooling fan is provided inside the chassis, and an air inlet end of the cooling fan faces an area sandwiched by the main circuit board and the PFC circuit board. A ventilation area is provided on the chassis, and a plurality of ventilation holes are provided on the ventilation area. An air outlet end of the cooling fan faces the ventilation area.
[0005] Preferably, the PFC circuit board is fixed to the heat sink by a plurality of screws.
[0006] Preferably, a plurality of heat sinks are provided on the PFC circuit board, the heat sinks correspond to the radiators one by one, the heat sinks are in close contact with the PFC circuit board, the heat sinks are located on the side of the PFC circuit board close to the main circuit board, the heat sinks are in close contact with the corresponding radiators, and the side of the radiator that is in contact with the heat sink is in full contact with the heat sink.
[0007] Preferably, the heat sink is provided with a plurality of positioning posts, the heat sink is provided with a plurality of positioning holes corresponding to the positioning posts one by one, the positioning posts are inserted into the corresponding positioning holes, and the depth of the positioning holes is greater than the length of the positioning posts.
[0008] Beneficial effects of the utility model: the utility model arranges the PFC circuit board and the main circuit board relatively to each other, the radiator is sandwiched between the main circuit board and the PFC circuit board, and the PFC circuit board is close to the radiator, so that the internal structure of the chassis becomes compact, and the volume of the chassis does not increase due to the addition of the PFC circuit. At the same time, there is no need to add an additional radiator, thereby reducing costs.
[0009] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.
Brief Description of the Drawings
[0010] Figure 1 This is the front view of the chassis of the compact PFC circuit welding machine of the utility model;
[0011] Figure 2 It is a rear view of a chassis of a compact PFC circuit welding machine of the utility model.
[0012] In the figure: 1-box, 2-main circuit board, 3-PFC circuit board, 10-cooling fan, 20-radiator, 21-positioning hole, 30-heat sink, 31-positioning column. [Specific implementation method]
[0013] See also Figure 1 , Figure 2 The utility model discloses a compact PFC circuit welding machine chassis, comprising a box body 1, a main circuit board 2, a PFC circuit board 3, a radiator 20, and a cooling fan 10. A main circuit board 2 is installed inside the box body 1, and a plurality of radiators 20 are installed on the main circuit board 2. A PFC circuit board 3 is arranged inside the box body 1, and the PFC circuit board 3 and the main circuit board 2 are arranged opposite to each other. The radiator 20 is sandwiched between the main circuit board 2 and the PFC circuit board 3, and the PFC circuit board 3 is close to the radiator 20. A cooling fan 10 is arranged inside the box body 1, and the air inlet end of the cooling fan 10 faces the area sandwiched by the main circuit board 2 and the PFC circuit board 3. A ventilation area is provided on the box body 1, and a plurality of ventilation holes are provided on the ventilation area. The air outlet end of the cooling fan 10 faces the ventilation area.
[0014] The PFC circuit board 3 is fixed to the heat sink 20 by a plurality of screws.
[0015] In order to ensure the heat dissipation effect, a plurality of heat sinks 30 are provided on the PFC circuit board 3. The heat sinks 30 correspond to the radiators 20 one by one. The heat sinks 30 are close to the PFC circuit board 3. The heat sinks 30 are located on the side of the PFC circuit board 3 close to the main circuit board 2. The heat sinks 30 are close to the corresponding radiators 20. The side of the radiator 20 that is in contact with the heat sink 30 is in full contact with the heat sink 30.
[0016] In order to avoid the radiator 20 and the heat sink 30 from being misaligned and causing the contact surface between the two to become smaller, the heat sink 30 is provided with a plurality of positioning posts 31, and the radiator 20 is provided with a plurality of positioning holes 21 corresponding to the positioning posts 31 one by one. The positioning posts 31 are inserted into the corresponding positioning holes 21, and the depth of the positioning holes 21 is greater than the length of the positioning posts 31.
[0017] Working process of this utility model:
[0018] During the operation of the compact PFC circuit welding machine chassis of the utility model, the heat generated by the PFC circuit board 3 is dissipated through the radiator 20 on the main circuit board 2, and the cooling fan 10 accelerates the heat dissipation of the radiator 20. There is no need to add an additional radiator 20, and the cost is low. At the same time, the PFC circuit board 3 is arranged opposite to the main circuit board 2, and the structure is compact. The volume of the box body 1 will not be increased additionally, which further reduces the cost.
[0019] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.
Claims
1. Compact PFC circuit welding machine chassis, characterized by: The invention comprises a box (1), a main circuit board (2), a PFC circuit board (3), a radiator (20), and a cooling fan (10); a main circuit board (2) is installed inside the box (1); a plurality of radiators (20) are installed on the main circuit board (2); a PFC circuit board (3) is arranged inside the box (1); the PFC circuit board (3) and the main circuit board (2) are arranged opposite to each other; the radiator (20) is sandwiched between the main circuit board (2) and the PFC circuit board (3); the PFC circuit board (3) is closely attached to the radiator (20); a cooling fan (10) is arranged inside the box (1); an air inlet end of the cooling fan (10) faces an area sandwiched by the main circuit board (2) and the PFC circuit board (3); a ventilation area is provided on the box (1); a plurality of ventilation holes are provided on the ventilation area; and an air outlet end of the cooling fan (10) faces the ventilation area.
2. The compact PFC circuit welding machine chassis as claimed in claim 1, characterized in that: The PFC circuit board (3) is fixed to the heat sink (20) via a plurality of screws.
3. The compact PFC circuit welding machine chassis as claimed in claim 1, characterized in that: The PFC circuit board (3) is provided with a plurality of heat sinks (30), the heat sinks (30) correspond to the heat sinks (20) one by one, the heat sinks (30) are in close contact with the PFC circuit board (3), the heat sinks (30) are located on the side of the PFC circuit board (3) close to the main circuit board (2), the heat sinks (30) are in close contact with the corresponding heat sinks (20), and the side of the heat sink (20) that is in contact with the heat sink (30) is in full contact with the heat sink (30).
4. The compact PFC circuit welding machine chassis as claimed in claim 3, characterized in that: The heat sink (30) is provided with a plurality of positioning posts (31), the heat sink (20) is provided with a plurality of positioning holes (21) corresponding one to the positioning posts (31), the positioning posts (31) are inserted into the corresponding positioning holes (21), and the depth of the positioning holes (21) is greater than the length of the positioning posts (31).