Self-cooling argon arc welding machine power source

Abstract

The application discloses a self-cooling type argon arc welding machine welding power supply, which comprises a shell, a first side of the shell being provided with a hollow structure, and an axial flow fan being installed on the opposite second side; a horizontal partition plate is fixedly arranged in the middle of the internal space of the shell, extends from the first side to the front of the second side to form a suspended end, and divides the internal space of the shell into an upper heat dissipation chamber and a lower heat dissipation chamber; a main control circuit board is fixedly installed in the upper heat dissipation chamber; a high-frequency transformer is fixedly installed in the lower heat dissipation chamber; and an adjustable air guide assembly comprises an upper air guide plate rotatably arranged at the entrance of the upper heat dissipation chamber and a lower air guide plate rotatably arranged at the entrance of the lower heat dissipation chamber; compared with the prior art, the application realizes layered independent heat dissipation, dynamic air cooling-liquid cooling cooperation and intelligent temperature control closed loop, so that the heat dissipation efficiency is improved, the operation stability is enhanced, and the energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of welding power source technology, specifically a self-cooling argon arc welding machine welding power source. Background Technology

[0002] As the core component of the welding system, the welding power supply of an argon arc welding machine needs to continuously output high current and high voltage to meet the requirements of stable arc combustion. Its internal high-frequency transformer, main control circuit board, IGBT module, etc., generate a large amount of Joule heat and electromagnetic loss heat during high-load operation. Furthermore, when the microprocessor, capacitors, and other electronic components in the main control circuit board are exposed to high-temperature environments (>85℃) for extended periods, they are prone to performance degradation, parameter drift, and even failure. The iron core and winding insulation materials of the high-frequency transformer will oxidize more rapidly at high temperatures, leading to faults such as core saturation and insulation breakdown, significantly shortening the equipment's lifespan. Increased temperature causes changes in the power supply output characteristics, affecting arc stability and causing process defects such as uneven weld formation and increased spatter.

[0003] Currently, welding power supplies mainly rely on air cooling, which uses axial fans to force convection and expel heat from heat sinks or the cavity. The main control circuit board and the high-frequency transformer share an air duct, causing the high-temperature airflow to diffuse disorderly within the cavity, resulting in passive heat absorption by low-temperature components (such as the main control circuit board being affected by residual heat from the transformer). Furthermore, because welding machines often operate in high-temperature environments, the fan's intake temperature rises, reducing its cooling efficiency.

[0004] Liquid cooling typically uses a circulating coolant that flows over the surface of heat-generating components and dissipates heat through an external heat exchanger. However, the structural characteristics of the high-frequency transformer, the main heat-generating component in a welding power supply, prevent the circulating coolant from directly entering its interior. Therefore, liquid cooling in welding power supplies can only dissipate heat from the outer casing and cannot solve the problem of heat accumulation inside the high-frequency transformer.

[0005] Therefore, it is necessary to provide a self-cooling argon arc welding power source to solve the problems mentioned in the background art. Summary of the Invention

[0006] To achieve the above objectives, the present invention provides the following technical solution: a self-cooling argon arc welding machine power supply, comprising:

[0007] The outer casing has a perforated structure on its first side and an axial fan mounted on the opposite second side.

[0008] A horizontal partition is fixedly installed in the middle of the internal space of the outer shell, extending from the first side to the front of the second side to form a suspended end, dividing the interior of the outer shell into an upper heat dissipation chamber and a lower heat dissipation chamber.

[0009] The main control circuit board is fixedly installed in the upper heat dissipation chamber;

[0010] The high-frequency transformer is fixedly installed in the lower heat dissipation chamber;

[0011] An adjustable air guide assembly includes an upper air guide plate rotatably mounted at the inlet of the upper heat dissipation chamber and a lower air guide plate at the inlet of the lower heat dissipation chamber.

[0012] Furthermore, the high-frequency transformer includes multiple overlapping iron cores and coil windings wound around the iron cores, with a heat-conducting plate sandwiched between every two iron cores. The heat-conducting plate passes through both sides of the iron cores and extends laterally for a certain distance, with a heat dissipation plate sandwiched between every two heat-conducting plates in the extended heat-conducting plate.

[0013] Furthermore, a cooling assembly with a vertical penetrating horizontal partition is provided between the upper air guide plate, the lower air guide plate, the main control circuit board, and the high-frequency transformer.

[0014] Furthermore, the front and rear of the outer casing are each provided with a slide rail corresponding to the position of the cooling component, and a slide rod is slidably arranged in the two slide rails, with the two sides of the cooling component respectively fixed to the slide rod.

[0015] Furthermore, the cooling assembly includes multiple vertically arranged fins, with a capillary tube fixed at the center of each fin, and each capillary tube having its two ends fixed to two sliding rods respectively.

[0016] The slide bar has a flow hole, and each capillary tube is connected to the flow hole;

[0017] Two sliding rods have tubes fixed to their upper ends, and the tubes can slide through the flow hole.

[0018] Furthermore, a water pump and a thermoelectric cooler are sequentially connected between the two cannulas via flexible tubing.

[0019] Furthermore, one end of the rotating shaft of both the upper and lower air guide plates extends through the outer wall of the outer casing, and a first gear is fixed at one end of each of them outside the outer casing.

[0020] The outer wall of the housing is provided with a drive gear, which meshes with two first gears.

[0021] Furthermore, a rack is fixed in one of the slide rods, and a second gear is rotatably provided on the outer wall of the housing. One side of the second gear is embedded in the corresponding slide rail and meshes with the rack, and the second gear also meshes with the drive gear.

[0022] Furthermore, it also includes a temperature sensing module, comprising a first temperature sensor disposed on the surface of the main control circuit board and a second temperature sensor disposed on the surface of the high-frequency transformer, wherein the temperature sensing module is electrically connected to a control unit.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] In this invention, the main control circuit board and the high-frequency transformer are separated into upper and lower independent chambers by a horizontal partition, which completely blocks the heat generated by the high-frequency transformer from being conducted to the main control circuit board, avoiding the failure or performance degradation of electronic components due to high temperature. In addition, the airflow paths of the upper and lower heat dissipation chambers are independent and controllable, and heat dissipation resources can be allocated according to the heat dissipation characteristics of different components.

[0025] In this invention, the upper and lower air guide plates rotate synchronously in opposite directions via a gear set, dynamically allocating the airflow ratio between the upper and lower chambers as needed, while maintaining a constant total airflow. For example, when the temperature of the main control circuit board rises, the opening of the upper air guide plate is increased to prioritize the heat dissipation needs of precision electronic components and reduce wasted airflow. Meanwhile, the height of the cooling components is adjusted synchronously with the opening of the air guide plates to ensure precise matching between the coolant coverage area and the current key heat dissipation area, improving coolant utilization and reducing energy consumption.

[0026] In this invention, heat-conducting plates are embedded between the iron cores to quickly conduct internal heat to the laterally extending heat dissipation plates. Combined with forced convection cooling by an axial fan, this effectively solves the problems of insulation aging and accelerated core loss caused by internal heat accumulation in traditional transformers. The spaced heat dissipation plates increase the heat dissipation area while avoiding excessive airflow resistance, ensuring a balance between heat dissipation efficiency and airflow consumption. Attached Figure Description

[0027] Figure 1 A schematic diagram of the overall structure of a self-cooling argon arc welding machine power supply;

[0028] Figure 2 This is a schematic diagram of the internal structure of a self-cooling argon arc welding machine power supply.

[0029] Figure 3 A schematic cross-sectional view of a self-cooling argon arc welding machine power source;

[0030] Figure 4 This is a schematic diagram of the cross-sectional structure of a high-frequency transformer;

[0031] Figure 5 This is a schematic diagram of the cross-sectional structure of the cooling component;

[0032] In the diagram: 1. Outer shell; 2. Horizontal partition; 3. Main control circuit board; 4. High-frequency transformer; 41. Iron core; 42. Coil winding; 5. Heat-conducting plate; 6. Heat sink; 7. Upper air guide plate; 8. Lower air guide plate; 9. Cooling assembly; 91. Fin; 92. Capillary tube; 93. Flow hole; 94. Rack; 10. Axial fan; 11. Slide rail; 12. Slide rod; 13. Insert tube; 14. Water pump; 15. Semiconductor cooler; 16. First gear; 17. Drive gear; 18. Second gear. Detailed Implementation

[0033] Please see Figures 1-5 In this embodiment of the invention, a self-cooling argon arc welding power source includes:

[0034] The outer casing 1 has a hollow structure on its first side and an axial fan 10 is installed on the opposite second side.

[0035] A horizontal partition 2 is fixedly installed in the middle of the internal space of the outer shell 1, extending from the first side to the front of the second side to form a suspended end, dividing the interior of the outer shell 1 into an upper heat dissipation chamber and a lower heat dissipation chamber.

[0036] The main control circuit board 3 is fixedly installed in the upper heat dissipation cavity;

[0037] High-frequency transformer 4 is fixedly installed in the lower heat dissipation chamber;

[0038] An adjustable air guide assembly includes an upper air guide plate 7 rotatably disposed at the inlet of the upper heat dissipation chamber and a lower air guide plate 8 at the inlet of the lower heat dissipation chamber;

[0039] The main control circuit board 3 and the high-frequency transformer 4 are separated by a horizontal partition 2 for independent heat dissipation, which can prevent the high temperature of the high-frequency transformer 4 from damaging the electronic components in the main control circuit board 3. The axial fan 10 is configured to form a directional airflow from the first side to the second side. The upper air guide plate 7 and the lower air guide plate 8 are respectively adjusted by adjusting the angle to control the airflow cross-sectional area of ​​the corresponding chamber, thereby adjusting the airflow for heat dissipation of the main control circuit board 3 and the high-frequency transformer 4.

[0040] In this embodiment, the high-frequency transformer 4 includes multiple overlapping iron cores 41 and coil windings 42 wound around the iron cores 41. A heat-conducting plate 5 is sandwiched between every two iron cores 41. The heat-conducting plate 5 penetrates both sides of the iron core 41 and extends laterally for a certain distance. A heat dissipation plate 6 is sandwiched between every two heat-conducting plates 5.

[0041] In other words, the heat-conducting sheet 5 can transfer the heat inside the iron core 41 to the heat sink 6, thereby increasing the heat dissipation area and preventing heat from accumulating inside the iron core 41.

[0042] In this embodiment, a cooling assembly 9 that vertically penetrates the horizontal partition 2 is provided between the upper air guide plate 7, the lower air guide plate 8, the main control circuit board 3, and the high-frequency transformer 4.

[0043] In this embodiment, slide rails 11 are provided on the front and rear of the outer shell 1 at positions corresponding to the cooling component 9, and slide rods 12 are slidably arranged in the two slide rails 11. The two sides of the cooling component 9 are respectively fixed to the slide rods 12.

[0044] By adjusting the height of the cooling component 9, the proportion of the cooling component 9's area within the upper and lower heat dissipation chambers can be adjusted, thereby regulating the cooling effect on the main control circuit board 3 and the high-frequency transformer 4.

[0045] In this embodiment, the cooling assembly 9 includes multiple vertically arranged fins 91, with a capillary tube 92 fixed at the center of each fin 91, and each capillary tube 92 having its two ends fixed to two slide rods 12 respectively.

[0046] The slide bar 12 has a flow hole 93, and each capillary tube 92 is connected to the flow hole 93.

[0047] Two sliding rods 12 are fixed with insertion tubes 13 at their upper ends, and the insertion tubes 13 can slide through the flow hole 93.

[0048] In this embodiment, a water pump 14 and a semiconductor cooler 15 are sequentially connected between the two insertion tubes 13 via a flexible hose.

[0049] In other words, the water pump 14 and the semiconductor cooler 15 can continuously circulate coolant into the flow holes 93 of the two slide bars 12. The coolant moves through the flow holes 93 of the two slide bars 12 through each capillary tube 92, thereby cooling the fins 91 and cooling the air passing through the fins 91, so as to dissipate heat from the main control circuit board 3 and the high-frequency transformer 4.

[0050] In this embodiment, one end of the rotating shaft of the upper air guide plate 7 and the lower air guide plate 8 both penetrates through the outer wall of the outer shell 1, and a first gear 16 is fixed at one end of each of them outside the outer shell 1.

[0051] The outer wall of the housing 1 is provided with a drive gear 17, which meshes with two first gears 16.

[0052] The drive gear 17 can drive the two first gears 16 to rotate synchronously and in the same direction, so that the upper air guide plate 7 and the lower air guide plate 8 also rotate synchronously and in the same direction. That is to say, when the opening of the upper air guide plate 7 increases, the opening of the lower air guide plate 8 decreases, and vice versa, so that the total air intake remains unchanged when the air intake volume in the upper heat dissipation chamber and the lower heat dissipation chamber changes ratio.

[0053] In this embodiment, a rack 94 is fixed in one of the slide rods 12, and a second gear 18 is rotatably provided on the outer wall of the outer shell 1. One side of the second gear 18 is embedded in the corresponding slide rail 11 and meshes with the rack 94. The second gear 18 also meshes with the drive gear 17.

[0054] When the drive gear 17 rotates, it will cause the second gear 18 to drive the rack 94 to rise and fall, thereby causing the slide bar 12 and the cooling component 9 to rise and fall. The larger the opening of the upper air guide plate 7, the higher the height of the cooling component 9, and vice versa. This makes the height of the cooling component 9 match the opening of the upper air guide plate 7 and the lower air guide plate 8.

[0055] In this embodiment, a temperature sensing module is also included, comprising a first temperature sensor disposed on the surface of the main control circuit board 3 and a second temperature sensor disposed on the surface of the high-frequency transformer 4. The temperature sensing module is electrically connected to a control unit.

[0056] The control unit controls the rotation angle of the drive gear 17 based on the temperature difference.

[0057] In practice:

[0058] When the welding power supply is running, the axial fan 10 on the second side of the housing 1 starts, forming a directional airflow from the first side to the second side. External air enters the interior of the housing 1 through the perforated structure and is then divided into two airflows, which enter the upper heat dissipation chamber (the area where the main control circuit board 3 is located) and the lower heat dissipation chamber (the area where the high-frequency transformer 4 is located) separated by the horizontal partition 2, respectively. Among them, the water pump 14 drives the coolant to be pre-cooled by the semiconductor cooler 15, and then enters the flow hole 93 of the slide bar 12 through the hose and the insertion tube 13, and flows into the capillary tube 92. When the coolant flows in the capillary tube 92, it absorbs the heat of the fins 91, forming a continuous circulation active cooling link. After the multiple fins 91 in the cooling assembly 9 are cooled by the capillary tube 92, they exchange heat with the passing air, further reducing the temperature of the airflow entering the upper and lower heat dissipation chambers.

[0059] Through the meshing of drive gear 17 and first gear 16, the upper air guide plate 7 and the lower air guide plate 8 rotate synchronously in opposite directions. For example, when the temperature of the main control circuit board 3 rises, the opening of the upper air guide plate 7 increases, while the opening of the lower air guide plate 8 decreases, allowing more airflow to enter the upper heat dissipation chamber and preferentially cooling the main control circuit board 3; conversely, it enhances the heat dissipation of the high-frequency transformer 4. The linkage mechanism of the air guide plates ensures that the increase and decrease of airflow in the upper and lower chambers complement each other, keeping the total airflow stable and avoiding the impact of airflow fluctuations on heat dissipation efficiency.

[0060] Meanwhile, as the drive gear 17 rotates, the second gear 18 drives the rack 94 to rise and fall, causing the slide bar 12 and the cooling assembly 9 fixed on it to move up and down as a whole, dynamically matching the opening of the air guide plate: when the opening of the upper air guide plate 7 increases, the cooling assembly 9 rises, and more fins 91 enter the upper heat dissipation chamber, enhancing the cooling of the main control circuit board 3; conversely, the cooling assembly 9 is lowered, enhancing the cooling effect of the high-frequency transformer 4 in the lower heat dissipation chamber.

[0061] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A self-cooled argon arc welding machine power source characterized by comprising: The utility model relates to a high-frequency transformer cooling device, including: The first side of the shell (1) is provided with a hollow structure, and the opposite second side is provided with an axial flow fan (10); The horizontal partition (2) is fixedly arranged in the middle of the internal space of the shell (1), extends from the first side to the front of the second side to form a suspended end, and divides the internal space of the shell (1) into an upper heat dissipation chamber and a lower heat dissipation chamber; The main control circuit board (3) is fixedly arranged in the upper heat dissipation chamber; The high-frequency transformer (4) is fixedly arranged in the lower heat dissipation chamber; The adjustable air guide assembly comprises an upper air guide plate (7) rotatably arranged at the entrance of the upper heat dissipation chamber and a lower air guide plate (8) rotatably arranged at the entrance of the lower heat dissipation chamber; The upper air guide plate (7) and the lower air guide plate (8) are provided with a cooling assembly (9) vertically penetrating the horizontal partition (2) between the main control circuit board (3) and the high-frequency transformer (4); The shell (1) is provided with a sliding rail (11) corresponding to the position of the cooling assembly (9) on the front and back surfaces, two sliding rails (11) are slidably provided with a sliding rod (12), and the two sides of the cooling assembly (9) are fixedly arranged in the sliding rod (12). The cooling assembly (9) comprises a plurality of fins (91) arranged vertically, each fin (91) is fixedly provided with a capillary tube (92) at the center, and the two ends of each capillary tube (92) are fixedly arranged in the two sliding rods (12). The sliding rod (12) is provided with a flow-through hole (93), and each capillary tube (92) and the flow-through hole (93) are penetrated. The upper end of the two sliding rods (12) is fixedly provided with a pipe (13), and the pipe (13) is slidably penetrated into the flow-through hole (93). The two pipes (13) are sequentially connected with a water pump (14) and a semiconductor refrigerator (15) through a hose. One end of the rotating shaft of the upper air guide plate (7) and the lower air guide plate (8) penetrates the outer wall of the shell (1), and the first gear (16) is fixedly arranged at the outer end of the rotating shaft of the upper air guide plate (7) and the lower air guide plate (8) outside the shell (1). The outer wall of the shell (1) is provided with a driving gear (17), and the driving gear (17) is engaged with the two first gears (16).

2. The self-cooled argon arc welder power source of claim 1, wherein, The high-frequency transformer (4) comprises a plurality of overlapping iron cores (41) and a coil winding (42) wound around the iron cores (41), and a heat-conducting sheet (5) is arranged between every two iron cores (41), the heat-conducting sheet (5) penetrates the two sides of the iron core (41) and extends laterally by a certain distance, and a heat dissipation plate (6) is arranged between every two heat-conducting sheets (5) in the extended heat-conducting sheet (5).

3. The self-cooled argon arc welder power source of claim 1, wherein, One of the sliding rods (12) is fixedly provided with a rack (94), the outer wall of the shell (1) is rotatably provided with a second gear (18), one side of the second gear (18) is embedded in the corresponding sliding rail (11) and engaged with the rack (94), and the second gear (18) is also engaged with the driving gear (17).

4. The self-cooled argon arc welder power source of claim 1, wherein, It also comprises a temperature sensing module, which comprises a first temperature sensor arranged on the surface of the main control circuit board (3) and a second temperature sensor arranged on the surface of the high-frequency transformer (4), and the temperature sensing module is electrically connected with a control unit.

Images