Wind tunnel heat dissipation type arc welding power supply device

Abstract

The utility model discloses a wind tunnel heat dissipation type arc welding power source device which comprises a shell, a fan assembly, an arc welding power source module and a heat conduction assembly, the shell is provided with a containing cavity, a partition plate is arranged in the shell to at least divide the containing cavity into a wind tunnel flow channel and a containing cavity, and the shell is provided with an air inlet and an air outlet. The fan assembly is used for guiding air flow to enter the wind tunnel flow channel from the air inlet and flow out from the air outlet, the arc welding power supply module comprises a power module, the power module comprises a first electrical device group and a second electrical device group, the first electrical device group at least comprises a transformer winding, and the second electrical device group at least comprises a power switch tube assembly; the first electrical device group is located in the wind tunnel flow channel, the second electrical device group is located in the containing cavity, the heat conduction assembly is arranged on the partition plate, the heat conduction assembly is partially located in the wind tunnel flow channel, the heat conduction assembly is partially exposed out of the containing cavity, and the power switch tube assembly makes contact with the heat conduction assembly. According to the design, devices are reasonably distributed, the heat dissipation efficiency is improved, and stable operation of the welding machine is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a wind tunnel heat dissipation arc welding power supply device. Background Technology

[0002] Existing welding machine power supplies typically include a housing, a fan, and a power module. The fan and power module are housed within the housing. The power module usually includes components such as an input rectifier module, an inverter module, a transformer module, and an output rectifier module. The input rectifier module, inverter module, and output rectifier module use rectifier diodes and semiconductor power switching transistors, while the transformer module uses transformer windings. During operation, the rectifier diodes, power switching transistors, and transformer windings all generate a large amount of heat, requiring the fan to guide airflow to dissipate heat from these components. However, external airflow entering the housing inevitably brings dust, etc. Rectifier diodes and power switching transistors are relatively fragile and easily damaged by dust corrosion. Therefore, a dust-proof structure needs to be installed on the housing. However, installing a dust-proof structure reduces airflow and significantly decreases the heat dissipation effect, which may even affect the operational stability of the welding machine after prolonged use. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a wind tunnel cooling arc welding power supply device, which rationally distributes electrical components, improves heat dissipation efficiency, and ensures stable operation of the welding machine.

[0004] A wind tunnel cooling arc welding power supply device according to a first aspect embodiment of the present invention includes: a housing having a cavity, wherein a baffle plate is provided inside the housing to divide the cavity into at least a wind tunnel flow channel and a receiving cavity; the housing having an air inlet and an air outlet, the air inlet being connected to the first end of the wind tunnel flow channel and the air outlet being connected to the tail end of the wind tunnel flow channel; a fan assembly disposed in the housing, the fan assembly being used to guide airflow from the air inlet into the wind tunnel flow channel and out of the air outlet; and an arc welding power supply module including at least one A power module, comprising a first electrical component group and a second electrical component group, wherein the first electrical component group includes at least a transformer winding, and the second electrical component group includes at least a power switch assembly; the first electrical component group is disposed in the housing and located in the wind tunnel flow channel, and the second electrical component group is located in the accommodating cavity; a heat-conducting component is disposed in the baffle plate, wherein a portion of the heat-conducting component is located in the wind tunnel flow channel, and a portion of the heat-conducting component is exposed in the accommodating cavity, and the power switch assembly is in contact with the heat-conducting component.

[0005] A wind tunnel cooling arc welding power supply device according to an embodiment of the present utility model has at least the following beneficial effects:

[0006] This utility model relates to a wind tunnel cooling arc welding power supply device. The housing cavity is divided into a wind tunnel channel and a receiving cavity by a baffle plate. Components in the second electrical component group, such as power switch tubes, which are relatively easily damaged by dust, are placed in the receiving cavity. Components in the first electrical component group, such as transformer windings, which are less affected by dust, can be placed in the wind tunnel channel. A fan assembly drives airflow from the inlet into the wind tunnel channel and out the outlet. The airflow directly acts on the first electrical component group, providing efficient heat dissipation. The receiving cavity is relatively sealed, preventing dust carried by the airflow from easily entering it. The heat emitted by the second electrical component group can be conducted to the wind tunnel channel through a heat-conducting component and carried away by the airflow. The wind tunnel channel is not excessively obstructed, allowing for a large airflow, thus ensuring heat dissipation. This design rationally distributes the electrical components, improves heat dissipation efficiency, and ensures stable operation of the welding machine.

[0007] According to some embodiments of the present invention, the heat-conducting component is provided with multiple heat dissipation fins, and a heat dissipation channel is formed between two adjacent heat dissipation fins. The length direction of the heat dissipation channel is consistent with the length direction of the wind tunnel channel.

[0008] According to some embodiments of the present invention, the heat-conducting assembly includes a heat-conducting base, each of the heat dissipation fins is connected to the heat-conducting base, the heat-conducting base has an accommodating plane, the partition plate is provided with an installation port, the heat-conducting base is connected to the partition plate so that the accommodating plane is exposed from the installation port to the accommodating cavity, and the power switching tube assembly is disposed on the accommodating plane.

[0009] According to some embodiments of the present invention, in the wind tunnel flow channel, the heat-conducting component is closer to the air inlet than the first electrical device group.

[0010] According to some embodiments of the present invention, the transformer winding includes a primary coil and a secondary coil coupled to each other, and the primary coil is connected to at least a portion of the second electrical device group through a conductive busbar.

[0011] According to some embodiments of the present invention, the second electrical device group further includes an output rectifier diode assembly. The accommodating cavity includes a first power chamber and a second power chamber that are isolated from each other. The power switch assembly is disposed in the first power chamber, and the output rectifier diode assembly is disposed in the second power chamber. There are multiple thermal conductive components, at least one of which is partially exposed in the first power chamber to make thermal contact with the power switch assembly, and at least one of which is partially exposed in the second power chamber to make thermal contact with the output rectifier diode assembly.

[0012] According to some embodiments of the present invention, the first power chamber, the wind tunnel channel, and the second power chamber are arranged in sequence. In the wind tunnel channel, the heat-conducting components exposed in the first power chamber and the heat-conducting components exposed in the second power chamber are distributed left and right relative to the length direction of the wind tunnel channel.

[0013] According to some embodiments of the present invention, the first power chamber, the wind tunnel flow channel, and the second power chamber are arranged in sequence to form a mounting cavity group. There are multiple power modules and the output terminals of the multiple power modules are connected in parallel. There are also multiple mounting cavity groups. The power modules are arranged one-to-one in the mounting cavity groups. The multiple mounting cavity groups are arranged in layers from top to bottom or distributed from left to right.

[0014] According to some embodiments of the present invention, at least some of the mounting cavity groups share the same wind tunnel flow channel.

[0015] According to some embodiments of the present invention, the arc welding power module further includes a control circuit board, which is connected to the power module. The housing is provided with an electrical control cavity at the top of the wind tunnel flow channel, and the control circuit board is located in the electrical control cavity.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a perspective view of one embodiment of the wind tunnel heat dissipation arc welding power supply device of this utility model.

[0019] Figure 2 This is a three-dimensional schematic diagram from another perspective of one embodiment of the wind tunnel heat dissipation arc welding power supply device of this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of one embodiment of the wind tunnel heat dissipation arc welding power supply device of this utility model.

[0021] Figure 4 This is a front view of the internal structure of one embodiment of the wind tunnel heat dissipation arc welding power supply device of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of one embodiment of the heat-conducting component;

[0023] Figure 6 A schematic diagram of the layout of one embodiment of the cavity assembly;

[0024] Figure 7 A schematic diagram of the layout for another embodiment of the cavity assembly.

[0025] Figure label:

[0026] Housing 100; First power chamber 110; Second power chamber 120; Electrical control chamber 130; Wind tunnel flow channel 140; Air inlet 150; Air outlet 160; Housing assembly 200; Baffle plate 300; Mounting port 310; Transformer winding 410; Power switch tube assembly 420; Output rectifier diode assembly 430; Input rectifier diode assembly 440; Control circuit board 450; Reactor module 460; Conductive busbar 500; Heat-conducting component 600; Heat dissipation fins 610; Heat-conducting base 620; Accommodating plane 630; First grid plate 710; Second grid plate 720. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] like Figure 1 - Figure 7 As shown, a wind tunnel cooling arc welding power supply device according to a first aspect embodiment of the present invention includes a housing 100, a fan assembly, an arc welding power supply module, and a heat-conducting assembly 600. The housing 100 has a cavity, and a baffle 300 is provided inside the housing 100 to divide the cavity into at least a wind tunnel flow channel 140 and a receiving cavity. The housing 100 is provided with an air inlet 150 and an air outlet 160. The air inlet 150 is connected to the first end of the wind tunnel flow channel 140, and the air outlet 160 is connected to the tail end of the wind tunnel flow channel 140. The fan assembly is disposed in the housing 100, and the fan assembly is used to guide the airflow from the air inlet 150 into the wind tunnel flow channel 140 and out of the air outlet. Air flows out from vent 160. The arc welding power module includes at least one power module. The power module includes a first electrical component group and a second electrical component group. The first electrical component group includes at least a transformer winding 410, and the second electrical component group includes at least a power switch assembly 420. The first electrical component group is disposed in the housing 100 and located in the wind tunnel channel 140. The second electrical component group is located in the accommodating cavity. A heat-conducting component 600 is disposed in the baffle 300. The heat-conducting component 600 is partially located in the wind tunnel channel 140 and partially exposed in the accommodating cavity. The power switch assembly 420 is in contact with the heat-conducting component 600.

[0032] The housing 100 can be rectangular or horizontally placed cylindrical. There can be multiple baffles 300, which can be arranged horizontally or vertically within the housing 100 to separate the wind tunnel channel 140 and the accommodating cavity. Typically, the air inlets 150 and outlets 160 at both ends of the wind tunnel channel 140 face each other to reduce obstruction of airflow. The fan assembly can have multiple fan bodies and multiple wind tunnel channels 140. Each fan body corresponds to one wind tunnel channel 140. Of course, one fan body can also correspond to multiple wind tunnel channels 140.

[0033] A first grille plate 710 can be provided on the front end face of the housing 100. The first grille plate 710 is located at the air inlet 150 and has multiple ventilation holes. The diameter of the ventilation holes can be set according to actual needs. It can be set to a larger diameter without significantly affecting the airflow, but it can block moisture, salt spray, sand, dust, etc. from entering the wind tunnel channel 140 to a certain extent. A second grille plate 720 is provided on the rear end face of the housing 100 and is located at the air outlet 160. The second grille plate 720 has multiple wind baffles, and ventilation gaps are formed between adjacent wind baffles. Similarly, ventilation gaps allow airflow with higher wind speeds to flow out of the wind tunnel channel 140, but they can also block moisture, salt spray, sand, dust, etc. from entering the wind tunnel channel 140 to a certain extent.

[0034] Specifically, the first grille plate 710 may include an air inlet plate and a first protective plate stacked on top of each other. The first protective plate is located on the periphery, while the air inlet plate is close to the wind tunnel channel 140. The air inlet plate may have multiple first straight through holes with a diameter of 12mm, while the first protective plate is provided with multiple louver-shaped first strip openings arranged in sequence. The first protective plate is also provided with a first water baffle that is tilted downwards, thereby achieving better ventilation effect while meeting the requirements of preventing rain and sand.

[0035] Similarly, the second grille 720 may include an air outlet plate and a second protective plate stacked on top of each other. The second protective plate is located on the periphery, while the air outlet plate is close to the wind tunnel channel 140. The air outlet plate may have multiple second straight holes with a diameter of 12mm, while the second protective plate is provided with multiple louver-shaped second strip openings arranged in parallel. The second protective plate is also provided with a downwardly inclined second water baffle, thereby achieving better ventilation while meeting the requirements of preventing rain and sand.

[0036] Specifically, the power module typically includes an input rectifier module, an inverter module, a transformer module, an output rectifier module, and a reactor module 460 connected in sequence. The input rectifier module includes an EMC board, an input rectifier diode assembly 440, and a filter capacitor. The inverter module includes a power switch assembly 420 and a first current transformer for detecting the primary current. The power switch assembly 420 is composed of multiple semiconductor switches, specifically IGBTs or SiC transistors. The transformer module includes a transformer winding 410. The output rectifier module includes an output rectifier diode assembly 430 and a second current transformer for detecting the secondary current. The reactor module 460 includes a reactor composed of inductors.

[0037] The transformer winding 410 and the reactor are classified into the first electrical device group, while the EMC board, the input rectifier diode assembly 440, the filter capacitor, the first current transformer, the power switch assembly 420, the output rectifier diode assembly 430 and the second current transformer are classified into the second electrical device group.

[0038] This utility model relates to a wind tunnel cooling arc welding power supply device. The cavity of the housing 100 is divided into a wind tunnel channel 140 and a receiving cavity by a baffle plate 300. Components in the second electrical component group, such as the power switch tube assembly 420, which are relatively easily corroded and damaged by dust, are placed in the receiving cavity. Components in the first electrical component group, such as the transformer winding 410, which are less affected by dust, can be placed in the wind tunnel channel 140. The fan assembly drives the airflow from the air inlet 150 into the wind tunnel channel 140 and out from the air outlet 160. The airflow can directly act on the first electrical component group, providing efficient heat dissipation. The receiving cavity is relatively sealed, making it difficult for dust carried by the airflow to enter. The heat emitted by the second electrical component group can be conducted to the wind tunnel channel 140 through the heat conduction component 600 and carried away by the airflow. The wind tunnel channel 140 is not excessively obstructed, allowing for a large airflow, thus ensuring heat dissipation capacity. This design rationally distributes electrical components, improves heat dissipation efficiency, and ensures stable operation of the welding machine.

[0039] In some embodiments of this utility model, the heat-conducting component 600 is provided with multiple heat dissipation fins 610, and a heat dissipation channel is formed between two adjacent heat dissipation fins 610. The length direction of the heat dissipation channel is consistent with the length direction of the wind tunnel channel 140.

[0040] Specifically, the heat dissipation fins 610 are elongated, such as rectangular, and two adjacent heat dissipation fins 610 are arranged vertically with a gap between them to form a heat dissipation channel. The length direction of the heat dissipation channel is consistent with the length direction of the wind tunnel channel 140, so that the airflow can enter the heat dissipation channel during the flow of the wind tunnel channel 140. The airflow contacts the surface of the heat dissipation fins 610 and carries away the heat from the surface of the heat dissipation fins 610, thereby cooling the heat conduction component 600 and achieving the purpose of cooling the second electrical device.

[0041] In some embodiments of this utility model, such as Figure 4 , Figure 5 As shown, the heat-conducting assembly 600 includes a heat-conducting base 620, and each of the heat dissipation fins 610 is connected to the heat-conducting base 620. The heat-conducting base 620 has an accommodating plane 630, and the partition plate 300 is provided with an installation port 310. The heat-conducting base 620 is connected to the partition plate 300 so that the accommodating plane 630 is exposed from the installation port 310 into the accommodating cavity. The power switch tube assembly 420 is disposed on the accommodating plane 630.

[0042] The heat-conducting base 620 is used to connect to each heat dissipation fin 610. The heat-conducting base 620 can be connected to the baffle plate 300 by rivets or screws, thereby sealing the mounting port 310 and exposing the receiving plane 630 to the receiving cavity. The power switching transistor assembly 420, the input rectifier diode assembly 440, the output rectifier diode assembly 430, etc. can all be set on the receiving plane 630. The baffle plate 300, the heat-conducting base 620, and the heat dissipation fins 610 can all be made of thermally conductive and insulating materials, such as aluminum alloy. The two sides of the baffle plate 300 correspond to the wind tunnel channel 140 and the receiving cavity, respectively. The heat of the receiving cavity can also be transferred to the wind tunnel channel 140 through the baffle plate 300 and discharged with the airflow.

[0043] In some embodiments of this utility model, in the wind tunnel channel 140, the heat-conducting component 600 is closer to the air inlet 150 than the first electrical component group. Since the accommodating cavity is relatively sealed, the heat is basically discharged by the heat-conducting component 600. Therefore, after the airflow enters the wind tunnel channel 140 from the air inlet 150, the temperature is relatively low. At this time, the heat is preferentially exchanged with the heat-conducting component 600 to ensure high heat exchange efficiency. Since the first electrical component group is completely placed in the wind tunnel channel 140, the contact area with the airflow is large. Even if the airflow contacts the heat-conducting component 600 first and causes the temperature to rise, it will not have a significant impact on heat dissipation.

[0044] In some embodiments of this utility model, the transformer winding 410 includes a primary coil and a secondary coil coupled to each other, and the primary coil is connected to at least a portion of the second electrical device group through a conductive busbar 500.

[0045] The electrical devices at the front end of the primary coil of the transformer winding 410 have relatively high voltage and current. A conductive busbar 500 is used to connect the primary coil and the second group of electrical devices at the front end of the primary coil, such as the power switch assembly 420. The conductive busbar 500 has low internal resistance, low heat generation, and a wider heat dissipation area compared to wires or conductive solder wires.

[0046] In some embodiments of this utility model, such as Figure 3 , Figure 4As shown, the second electrical device group further includes an output rectifier diode assembly 430. The accommodating cavity includes a first power chamber 110 and a second power chamber 120 that are isolated from each other. The power switch assembly 420 is disposed in the first power chamber 110, and the output rectifier diode assembly 430 is disposed in the second power chamber 120. There are multiple thermal conductive components 600, at least one portion of which is exposed in the first power chamber 110 to make thermal contact with the power switch assembly 420, and at least one portion of which is exposed in the second power chamber 120 to make thermal contact with the output rectifier diode assembly 430.

[0047] The accommodating cavity is divided into a first power chamber 110 and a second power chamber 120 that are isolated from each other, and at least two heat-conducting components 600 are provided to correspond to the first power chamber 110 and the second power chamber 120. The transformer winding 410 is located in the wind tunnel flow channel 140. In the circuit structure of the power module, the components in front of the transformer winding 410 can be placed in the first power chamber 110, such as EMC board, input rectifier diode assembly 440, filter capacitor, power switch assembly 420, first current transformer, etc., while the components behind the transformer winding 410 can be placed in the second power chamber 120, such as output rectifier diode assembly 430, second current transformer, etc.

[0048] The baffles 300 separating the first power chamber 110 and the wind tunnel channel 140, as well as the second power chamber 120 and the wind tunnel channel 140, can conduct heat and assist the heat exchange of the heat-conducting component 600. The components in front of the transformer winding 410 and the components behind the transformer winding 410 are placed in two power chambers respectively, which can achieve reasonable electrical isolation, reduce the risk of short circuits, and avoid electromagnetic interference.

[0049] In some embodiments of this utility model, the first power chamber 110, the wind tunnel channel 140, and the second power chamber 120 are arranged in sequence. In the wind tunnel channel 140, the heat-conducting components 600 exposed in the first power chamber 110 and the heat-conducting components 600 exposed in the second power chamber 120 are distributed left and right relative to the length direction of the wind tunnel channel 140.

[0050] The first power chamber 110, the wind tunnel flow channel 140, and the second power chamber 120 are arranged in sequence. From the circuit structure of the power module, the devices in front of the transformer winding 410 can be connected to one side of the transformer winding 410, and the devices behind the transformer winding 410 can be connected to the other side of the transformer winding 410. The arrangement of wires and busbars is more reasonable, and the heat conduction components 600 on both sides can also be distributed left and right. The airflow passes through the two heat conduction components 600 at basically the same time, and there will be no difference in heat dissipation efficiency due to the airflow passing through the two heat conduction components 600 one after the other.

[0051] In some embodiments of this utility model, such as Figure 3 , 6 As shown in Figure 7, the arc welding power module also includes a control circuit board 450, which is connected to the power module. The housing 100 is provided with an electrical control cavity 130 at the top of the wind tunnel flow channel 140, and the control circuit board 450 is located in the electrical control cavity 130.

[0052] The control circuit board 450 is equipped with a processing chip such as an MCU or CPU and its auxiliary circuits. The control circuit board 450 can be connected to the controlled terminal of the power switching transistor in each power switching transistor assembly 420 to adjust the output welding current and welding voltage and maintain arc stability.

[0053] Each power module can also have its own sub-controller. The sub-controllers are connected to the power switching transistors in their respective power switching transistor assemblies 420, and then the control circuit board 450 is connected to each sub-controller to issue control commands.

[0054] This design includes an electrical control cavity 130 at the top of the wind tunnel flow channel 140. The electrical control cavity 130 is isolated from both the wind tunnel flow channel 140 and the accommodating cavity, which can achieve isolation between high-voltage and low-voltage electricity and avoid electromagnetic interference.

[0055] In some embodiments of this utility model, such as Figure 6 , Figure 7 As shown, the first power chamber 110, the wind tunnel flow channel 140, and the second power chamber 120 are arranged in sequence to form a mounting cavity group 200. There are multiple power modules, and the output terminals of the multiple power modules are connected in parallel. There are also multiple mounting cavity groups 200. The power modules are arranged one-to-one in the mounting cavity groups 200. The multiple mounting cavity groups 200 are arranged in layers from top to bottom or distributed from left to right.

[0056] Among them, such as Figure 6As shown, multiple placement cavity groups 200 are arranged in layers from top to bottom in a row. At least some of the placement cavity groups 200 share the same wind tunnel flow channel 140, which is equivalent to multiple placement cavity groups 200 in layers sharing the same wind tunnel flow channel 140. Of course, multiple placement cavity groups 200 in layers can also have their own independent wind tunnel flow channels 140, and adjacent wind tunnel flow channels 140 are also separated by baffles 300.

[0057] The longitudinally stacked cavity assembly 200 has a small footprint and high space utilization, and power modules can be further stacked in the longitudinal direction to increase the adjustable range of output power.

[0058] like Figure 7 As shown, multiple mounting cavity groups 200 are arranged in layers from top to bottom to form a row, and the arc welding power supply device may include multiple rows of structures in which multiple mounting cavity groups 200 are arranged in layers from top to bottom, thereby forming a horizontally stacked structure. The horizontally stacked structure occupies a large area and has good stability.

[0059] Specifically, the electrical control cavity 130 is located above the topmost mounting cavity assembly 200.

[0060] Multiple mounting chambers house power modules in a one-to-one modular design, which helps reduce the size of electrical components such as transformers and reactors and prevents excessively large electrical components from affecting the laminar flow heat dissipation of the wind tunnel. Different power modules can use independent fan assemblies for heat dissipation, which can reduce the size and noise of the fan assemblies.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wind tunnel cooling arc welding power supply device, characterized in that, include: The housing has a cavity, and a baffle is provided inside the housing to divide the cavity into at least a wind tunnel channel and a receiving cavity. The housing is provided with an air inlet and an air outlet. The air inlet is connected to the first end of the wind tunnel channel, and the air outlet is connected to the last end of the wind tunnel channel. A fan assembly is disposed in the housing, and the fan assembly is used to guide airflow from the air inlet into the wind tunnel channel and out from the air outlet; An arc welding power supply module includes at least one power module. The power module includes a first electrical component group and a second electrical component group. The first electrical component group includes at least a transformer winding, and the second electrical component group includes at least a power switch assembly. The first electrical component group is disposed in the housing and located in the wind tunnel flow channel, and the second electrical component group is located in the accommodating cavity. A heat-conducting component is disposed on the baffle plate, with a portion of the heat-conducting component located in the wind tunnel flow channel and a portion of the heat-conducting component exposed in the accommodating cavity. The power switch assembly is in contact with the heat-conducting component.

2. The wind tunnel cooling arc welding power supply device according to claim 1, characterized in that: The heat-conducting component is provided with multiple heat dissipation fins, and a heat dissipation channel is formed between two adjacent heat dissipation fins. The length direction of the heat dissipation channel is consistent with the length direction of the wind tunnel channel.

3. The wind tunnel cooling arc welding power supply device according to claim 2, characterized in that: The heat-conducting assembly includes a heat-conducting base, each of the heat dissipation fins is connected to the heat-conducting base, the heat-conducting base has an accommodating plane, the partition plate is provided with an installation port, the heat-conducting base is connected to the partition plate so that the accommodating plane is exposed from the installation port to the accommodating cavity, and the power switching transistor assembly is disposed on the accommodating plane.

4. The wind tunnel cooling arc welding power supply device according to claim 1, characterized in that: In the wind tunnel flow channel, the heat-conducting component is closer to the air inlet than the first electrical component group.

5. The wind tunnel cooling arc welding power supply device according to claim 1, characterized in that: The transformer winding includes a primary coil and a secondary coil coupled to each other, and the primary coil is connected to at least a portion of the second electrical device group via a conductive busbar.

6. The wind tunnel cooling arc welding power supply device according to claim 1, characterized in that: The second electrical device group further includes an output rectifier diode assembly. The accommodating cavity includes a first power chamber and a second power chamber that are isolated from each other. The power switch assembly is disposed in the first power chamber, and the output rectifier diode assembly is disposed in the second power chamber. There are multiple thermally conductive components, at least one of which is partially exposed in the first power chamber for thermal contact with the power switch assembly, and at least one of which is partially exposed in the second power chamber for thermal contact with the output rectifier diode assembly.

7. The wind tunnel cooling arc welding power supply device according to claim 6, characterized in that: The first power chamber, the wind tunnel channel, and the second power chamber are arranged in sequence. In the wind tunnel channel, the heat-conducting components exposed in the first power chamber and the heat-conducting components exposed in the second power chamber are distributed left and right relative to the length direction of the wind tunnel channel.

8. The wind tunnel cooling arc welding power supply device according to claim 7, characterized in that: The first power chamber, the wind tunnel flow channel, and the second power chamber are arranged in sequence to form a cavity group. There are multiple power modules and the output terminals of the multiple power modules are connected in parallel. There are also multiple cavity groups. The power modules are arranged one-to-one in the cavity groups. The multiple cavity groups are arranged in layers from top to bottom or distributed from left to right.

9. A wind tunnel cooling arc welding power supply device according to claim 8, characterized in that: At least some of the aforementioned cavity groups share the same wind tunnel flow channel.

10. The wind tunnel cooling arc welding power supply device according to claim 1, characterized in that: The arc welding power module also includes a control circuit board, which is connected to the power module. The housing has an electrical control cavity at the top of the wind tunnel flow channel, and the control circuit board is located in the electrical control cavity.

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