Wind tunnel heat dissipation type arc welding power supply device

Abstract

The wind tunnel heat dissipation type arc welding power source device 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] The invention relates to the technical field of welding machine equipment, in particular to a wind tunnel heat dissipation type arc welding power supply device. Background Art

[0002] An existing welding machine power supply device usually includes a shell, a fan and a power module. The fan and the power module are arranged in the shell. The power module usually includes an input rectifier module, an inverter module, a transformer module, an output rectifier module and other devices. The input rectifier module, the inverter module and the output rectifier module will use rectifier diodes, semiconductor power switch tubes and other devices, and the transformer module will use transformer windings. During operation, the rectifier diodes, the power switch tubes and the transformer windings will all generate a lot of heat, and the fan is required to guide the airflow to dissipate the heat for the above devices. However, the external airflow entering the shell is inevitably accompanied by dust, etc. The rectifier diodes and the power switch tubes are relatively fragile and are easily damaged by dust erosion. Therefore, a dust shield structure needs to be arranged on the shell. However, the arrangement of the dust shield structure will cause the wind flow to weaken, and the heat dissipation effect will be greatly reduced. Long-term use may even affect the operating stability of the welding machine. Summary of the invention

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

[0004] According to a first aspect of the present invention, a wind tunnel heat dissipation type arc welding power supply device comprises: a shell having a cavity, a baffle plate is arranged in the shell to divide the cavity into at least a wind tunnel flow channel and a receiving cavity, the shell is provided with an air inlet and an air outlet, the air inlet is connected to the head end of the wind tunnel flow channel, and the air outlet is connected to the tail end of the wind tunnel flow channel; a fan assembly is arranged in the shell, the fan assembly is used to guide the airflow from the air inlet into the wind tunnel flow channel and out of the air outlet; an arc welding power supply module comprises at least one power module, the power module comprises a first electrical component group and a second electrical component group, the first electrical component group comprises at least a transformer winding, the second electrical component group comprises at least a power switch tube assembly, the first electrical component group is arranged in the shell and is located in the wind tunnel flow channel, and the second electrical component group is located in the receiving cavity; a heat conductive component is arranged in the baffle plate, the heat conductive component is partially located in the wind tunnel flow channel, the heat conductive component is partially exposed in the receiving cavity, and the power switch tube assembly is in contact with the heat conductive component.

[0005] A wind tunnel heat dissipation type arc welding power supply device according to an embodiment of the present invention has at least the following beneficial effects:

[0006] In the wind tunnel heat dissipation type arc welding power supply device of the present invention, the housing cavity of the shell is separated into a wind tunnel flow channel and a housing cavity by a baffle plate. Components in the second electrical device group such as the power switch tube assembly that are relatively easily damaged by dust are placed in the housing cavity, while components in the first electrical device group such as the transformer winding that are less affected by dust can be placed in the wind tunnel flow channel. The fan assembly drives the wind flow to enter the wind tunnel flow channel from the air inlet and flow out from the air outlet. The wind flow can directly act on the first electrical device group to efficiently dissipate heat for the first electrical device group. The housing cavity is relatively sealed, and dust carried by the wind flow is not easy to enter the housing cavity. The heat emitted by the second electrical device group can be conducted to the wind tunnel flow channel through the heat conduction assembly and carried away by the wind flow. The wind tunnel flow channel is not blocked too much, and a larger wind flow can flow through it, so the heat dissipation capacity is guaranteed. The design reasonably distributes the electrical components, improves the heat dissipation efficiency, and ensures the stable operation of the welding machine.

[0007] According to some embodiments of the present invention, the heat conduction component is provided with a plurality of heat dissipation fins, a heat dissipation channel is formed between two adjacent heat dissipation fins, and 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 thermal conductive assembly includes a thermal conductive seat, each of the heat dissipating fins is connected to the thermal conductive seat, the thermal conductive seat has a accommodating plane, the baffle plate is provided with an installation port, the thermal conductive seat is connected to the baffle plate so that the accommodating plane is exposed to the accommodating cavity from the installation port, and the power switch tube assembly is arranged on the accommodating plane.

[0009] According to some embodiments of the present invention, in the wind tunnel flow channel, the heat conduction component is closer to the air inlet than the first electrical component 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 part of the second electrical device group through a conductive busbar.

[0011] According to some embodiments of the present invention, the second electrical device group also includes an output rectifier diode assembly, the accommodating cavity includes a first power chamber and a second power chamber isolated from each other, the power switch tube assembly is arranged in the first power chamber, and the output rectifier diode assembly is arranged in the second power chamber, there are multiple heat-conducting assemblies, at least one of the heat-conducting assemblies is partially exposed in the first power chamber to be in thermal contact with the power switch tube assembly, and at least one of the heat-conducting assemblies is partially exposed in the second power chamber to be in thermal contact with the output rectifier diode assembly.

[0012] 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. In the wind tunnel flow channel, the heat conductive component exposed to the first power chamber and the heat conductive component exposed to the second power chamber are distributed left and right relative to the length direction of the wind tunnel flow 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 placement cavity group, there are multiple power modules and the output ends of the multiple power modules are connected in parallel, there are also multiple placement cavity groups, the power modules are arranged in the placement cavity groups one by one, and the multiple placement cavity groups are arranged in layers from top to bottom or the multiple placement cavity groups are distributed from left to right.

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

[0015] According to some embodiments of the present invention, the arc welding power supply module also includes a control circuit board, which is connected to the power module, and the shell 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 the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A three-dimensional schematic diagram of one embodiment of a wind tunnel heat dissipation type arc welding power supply device of the present invention from one viewing angle;

[0019] Figure 2 It is a three-dimensional schematic diagram from another perspective of one embodiment of the wind tunnel heat dissipation type arc welding power supply device of the present invention;

[0020] Figure 3 A schematic diagram of the internal structure of one embodiment of a wind tunnel heat dissipation type arc welding power supply device of the present invention;

[0021] Figure 4 A front view of the internal structure of one embodiment of a wind tunnel heat dissipation type arc welding power supply device of the present invention;

[0022] Figure 5 It is a structural schematic diagram of one embodiment of a heat conducting component;

[0023] Figure 6A schematic diagram of the layout of one embodiment of the placement chamber group;

[0024] Figure 7 A schematic diagram of the layout of another embodiment of the cavity group placement.

[0025] Reference numerals:

[0026] Shell 100; first power chamber 110; second power chamber 120; electrical control chamber 130; wind tunnel flow channel 140; air inlet 150; air outlet 160; placement chamber group 200; baffle plate 300; installation port 310; transformer winding 410; power switch tube assembly 420; output rectifier diode assembly 430; input rectifier diode assembly 440; control circuit board 450; reactance module 460; conductive busbar 500; thermal conductive assembly 600; heat sink fins 610; thermal conductive seat 620; accommodating plane 630; first grid plate 710; second grid plate 720. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1 - Figure 7 As shown, according to an embodiment of the first aspect of the present invention, a wind tunnel heat dissipation type arc welding power supply device includes a shell 100, a fan assembly, an arc welding power supply module and a heat conduction assembly 600, the shell 100 has a cavity, and a baffle plate 300 is arranged in the shell 100 to divide the cavity into at least a wind tunnel flow channel 140 and a receiving cavity, the shell 100 is provided with an air inlet 150 and an air outlet 160, the air inlet 150 is connected to the head 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 arranged in the shell 100, and the fan assembly is used to guide the wind flow from the air inlet 150 into the wind tunnel flow channel 140 and out of the wind outlet The 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 410, the second electrical component group includes at least a power switch tube assembly 420, the first electrical component group is arranged in the shell 100 and is located in the wind tunnel flow channel 140, the second electrical component group is located in the accommodating cavity, the heat conductive component 600 is arranged in the baffle plate 300, the heat conductive component 600 is partially located in the wind tunnel flow channel 140, the heat conductive component 600 is partially exposed in the accommodating cavity, and the power switch tube assembly 420 is in contact with the heat conductive component 600.

[0032] Among them, the shell 100 can be in the shape of a rectangular parallelepiped or a horizontally placed cylinder, and there can be multiple baffle plates 300. The multiple baffle plates 300 can be arranged horizontally or vertically in the shell 100, so as to separate the wind tunnel flow channel 140 and the accommodating cavity. Generally speaking, the air inlet 150 and the air outlet 160 at both ends of the wind tunnel flow channel 140 are directly opposite to each other, so as to reduce the obstruction to the wind flow. There can be multiple fan bodies in the fan assembly, and there can also be multiple wind tunnel flow channels 140. The fan bodies correspond to the wind tunnel flow channels 140 one by one. Of course, one fan body can also correspond to multiple wind tunnel flow channels 140.

[0033] A first grid plate 710 may be provided on the front face of the housing 100. The first grid plate 710 is provided at the air inlet 150. The first grid plate 710 is provided with a plurality of ventilation holes. The aperture of the ventilation holes is set according to actual needs. It can be set to a larger aperture without causing too much impact on the wind flow, but it can block moisture, salt spray, wind sand, dust, etc. from entering the wind tunnel flow channel 140 to a certain extent. A second grid plate 720 is provided on the rear face of the housing 100. The second grid plate 720 is provided at the air outlet 160. The second grid plate 720 is provided with a plurality of wind shielding strips. A ventilation gap is formed between two adjacent wind shielding strips. Similarly, the ventilation gap can allow wind with a relatively high wind speed to flow out of the wind tunnel flow channel 140, but it can block moisture, salt spray, wind sand, dust, etc. from entering the wind tunnel flow 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 each other, the first protective plate being located at the periphery, and the air inlet plate being close to the wind tunnel flow channel 140, the air inlet plate may have a plurality of first straight through holes with an aperture of 12 mm, and the first protective plate is provided with a plurality of first louver-like strip openings arranged side by side in sequence, and a first water baffle inclined downward is provided on the first protective plate, so as to achieve a better ventilation effect while meeting the requirements of protecting against rain, wind and sand.

[0035] Similarly, the second grille plate 720 may include an air outlet plate and a second protective plate stacked on each other, the second protective plate is located at the periphery, and the air outlet plate is close to the wind tunnel flow channel 140, the air outlet plate may have a plurality of second straight through holes with an aperture of 12 mm, and the second protective plate is provided with a plurality of second louver-like strip openings arranged side by side in sequence, and a second water baffle inclined downward is provided on the second protective plate, so as to achieve a better ventilation effect while meeting the requirements of protecting against rain, wind and sand.

[0036] Specifically, the power module generally includes an input rectifier module, an inverter module, a transformer module, an output rectifier module and a reactance module 460, which are connected in sequence. The input rectifier module includes an EMC board, an input rectifier diode assembly 440 and a filter capacitor, etc. The inverter module includes a power switch tube assembly 420 and a first current transformer for detecting the primary current. The power switch tube assembly 420 is composed of multiple semiconductor switch tubes. Specifically, the semiconductor switch tube can be an IGBT or a SiC tube, etc. 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, and the reactance module 460 includes a reactor composed of an inductor.

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

[0038] In the wind tunnel heat dissipation type arc welding power supply device of the present invention, the housing 100 has a cavity separated into a wind tunnel flow channel 140 and a accommodating cavity by a baffle plate 300. Components in the second electrical device group such as the power switch tube assembly 420 that are relatively easily damaged by dust are placed in the accommodating cavity, while components in the first electrical device group such as the transformer winding 410 that are less affected by dust can be placed in the wind tunnel flow channel 140. The fan assembly drives the wind flow to enter the wind tunnel flow channel 140 from the air inlet 150 and flow out from the air outlet 160. The wind flow can directly act on the first electrical device group to efficiently dissipate heat for the first electrical device group. The accommodating cavity is relatively sealed, and dust carried by the wind flow is not easy to enter the accommodating cavity. The heat emitted by the second electrical device group can be conducted to the wind tunnel flow channel 140 through the heat conducting assembly 600 and carried away by the wind flow. The wind tunnel flow channel 140 is not blocked too much, and a large wind flow can flow through it, so the heat dissipation capacity is guaranteed. The design reasonably distributes the electrical components, improves the heat dissipation efficiency, and ensures the stable operation of the welding machine.

[0039] In some embodiments of the present invention, the heat conducting assembly 600 is provided with a plurality of heat dissipating fins 610 , and a heat dissipating channel is formed between two adjacent heat dissipating fins 610 . The length direction of the heat dissipating channel is consistent with the length direction of the wind tunnel channel 140 .

[0040] Specifically, the heat dissipation fins 610 are in the shape of long strips, such as a rectangular shape. Two adjacent heat dissipation fins 610 are arranged up and down with a gap between them, thereby forming 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 wind flow can enter the heat dissipation channel during the flow of the wind tunnel channel 140. The wind flow contacts the surface of the heat dissipation fins 610 and takes away the heat on the surface of the heat dissipation fins 610, dissipating heat and cooling the heat conductive component 600, thereby achieving the purpose of cooling the second electrical device.

[0041] In some embodiments of the present invention, Figure 4 , Figure 5 As shown, the thermal conductive assembly 600 includes a thermal conductive seat 620, each of the heat dissipating fins 610 is connected to the thermal conductive seat 620, the thermal conductive seat 620 has a receiving plane 630, the baffle plate 300 is provided with a mounting opening 310, the thermal conductive seat 620 is connected to the baffle plate 300 so that the receiving plane 630 is exposed to the receiving cavity from the mounting opening 310, and the power switch tube assembly 420 is arranged on the receiving plane 630.

[0042] The heat-conducting seat 620 is used to connect with each heat-dissipating fin 610. The heat-conducting seat 620 can be connected with the baffle plate 300 by rivets or screws, so as to close the installation opening 310 and expose the accommodation plane 630 to the accommodation cavity. The power switch tube assembly 420, the input rectifier diode assembly 440, the output rectifier diode assembly 430, etc. can be arranged on the accommodation plane 630. The baffle plate 300, the heat-conducting seat 620, and the heat-dissipating fin 610 can be made of heat-conducting and insulating materials, such as aluminum alloy. The two side surfaces of the baffle plate 300 correspond to the wind tunnel flow channel 140 and the accommodation cavity respectively. The heat of the accommodation cavity can also be transferred to the wind tunnel flow channel 140 through the baffle plate 300 and discharged with the wind flow.

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

[0044] In some embodiments of the present invention, 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 part of the second electrical device group through a conductive busbar 500 .

[0045] The voltage and current of the electrical devices at the front end of the primary coil of the transformer winding 410 are relatively high, and a conductive busbar 500 is used to respectively connect the primary coil and the second electrical device group at the front end of the primary coil, such as the power switch tube assembly 420, etc. The conductive busbar 500 has a small internal resistance, low heat generation, and a wider heat dissipation area than a wire or a conductive welding wire.

[0046] In some embodiments of the present invention, Figure 3 , Figure 4As shown, the second electrical device group also includes an output rectifier diode component 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 tube component 420 is arranged in the first power chamber 110, and the output rectifier diode component 430 is arranged in the second power chamber 120, and there are multiple heat-conducting components 600, at least one portion of the heat-conducting component 600 is exposed in the first power chamber 110 to be in thermal contact with the power switch tube component 420, and at least one portion of the heat-conducting component 600 is exposed in the second power chamber 120 to be in thermal contact with the output rectifier diode component 430.

[0047] The accommodating cavity is divided into a first power chamber 110 and a second power chamber 120 which 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 panels, input rectifier diode components 440, filter capacitors, power switch tube components 420, first current transformers, etc., and the components behind the transformer winding 410 can be placed in the second power chamber 120, such as output rectifier diode components 430, second current transformers, etc.

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

[0049] In some embodiments of the present invention, the first power chamber 110, the wind tunnel flow channel 140 and the second power chamber 120 are arranged in sequence. In the wind tunnel flow channel 140, the heat conductive component 600 exposed to the first power chamber 110 and the heat conductive component 600 exposed to the second power chamber 120 are distributed left and right relative to the length direction of the wind tunnel flow 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 device in front of the transformer winding 410 can be connected to one side of the transformer winding 410, and the device behind the transformer winding 410 can be connected to the other side of the transformer winding 410. The arrangement of the wires and the busbars is more reasonable, and the heat-conducting components 600 on both sides can also be distributed left and right. The wind flow passes through the two heat-conducting components 600 basically at the same time, and there will be no difference in heat dissipation efficiency due to the wind flow passing through the two heat-conducting components 600 one after another.

[0051] In some embodiments of the present invention, Figure 3 , 6 As shown in , 7 , the arc welding power supply 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 provided with a processing chip such as an MCU or a CPU and its auxiliary circuits. The control circuit board 450 can be connected to the controlled end of the power switch tube in each power switch tube assembly 420 to adjust the output welding current and welding voltage to maintain arc stability.

[0053] Each power module may also be equipped with a sub-controller, which is respectively connected to the power switch tubes in the respective power switch tube assembly 420, and the control circuit board 450 is then connected to each sub-controller to issue control instructions.

[0054] In this design, an electrical control chamber 130 is disposed at the top of the wind tunnel flow channel 140 . The electrical control chamber 130 is isolated from the wind tunnel flow channel 140 and the accommodating chamber, respectively, so as to achieve isolation of strong electricity and weak electricity and avoid radiated electromagnetic interference.

[0055] In some embodiments of the present invention, 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 placement chamber group 200, there are multiple power modules and the output ends of the multiple power modules are connected in parallel, there are also multiple placement chamber groups 200, the power modules are arranged in the placement chamber groups 200 one by one, and the multiple placement chamber groups 200 are arranged in layers from top to bottom or the multiple placement chamber groups 200 are distributed from left to right.

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

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

[0058] like Figure 7 As shown, the multiple placement chamber groups 200 are arranged in layers from top to bottom to form a row, and the arc welding power supply device may include a plurality of columns of structures composed of multiple placement chamber groups 200 arranged in layers from top to bottom, thereby forming a laterally stacked structure. The laterally stacked structure occupies a large area and has better stability.

[0059] Specifically, the electrical control chamber 130 is disposed above the topmost placement chamber group 200 .

[0060] Multiple cavity groups are used to place power modules one by one, presenting a modular design. This helps to reduce the volume required for electrical components such as transformers and reactors, and prevent electrical components from being too large and affecting the laminar heat dissipation of the wind tunnel flow channel. Different power modules can use independent fan assemblies for heat dissipation, which can reduce the volume of the fan assembly and reduce the noise of the fan assembly.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A wind tunnel heat dissipation type arc welding power supply device, characterized in that: include: A shell having a cavity, wherein a baffle is provided in the shell to divide the cavity into at least a wind tunnel flow channel and a receiving cavity, and the shell is provided with an air inlet and an air outlet, wherein the air inlet is connected to the head end of the wind tunnel flow channel, and the air outlet is connected to the tail end of the wind tunnel flow channel; A fan assembly is arranged on the housing, and is used to guide the wind flow from the air inlet into the wind tunnel flow channel and out from the air outlet; An arc welding power supply module, comprising at least one power module, wherein the power module comprises a first electrical component group and a second electrical component group, wherein the first electrical component group comprises at least a transformer winding, and the second electrical component group comprises at least a power switch tube assembly, wherein the first electrical component group is arranged 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 arranged on the baffle plate, a portion of the heat-conducting component is located in the wind tunnel flow channel, a portion of the heat-conducting component is exposed in the accommodating cavity, and the power switch tube component is in contact with the heat-conducting component.

2. A wind tunnel heat dissipation type arc welding power supply device according to claim 1, characterized in that: The heat conduction component is provided with a plurality of 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. A wind tunnel heat dissipation type arc welding power supply device according to claim 2, characterized in that: The heat-conducting assembly includes a heat-conducting seat, each of the heat-dissipating fins is connected to the heat-conducting seat, the heat-conducting seat has a receiving plane, the baffle plate is provided with a mounting opening, the heat-conducting seat is connected to the baffle plate so that the receiving plane is exposed to the receiving cavity from the mounting opening, and the power switch tube assembly is arranged on the receiving plane.

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

5. The wind tunnel heat dissipation type 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 part of the second electrical device group through a conductive busbar.

6. A wind tunnel heat dissipation type arc welding power supply device according to claim 1, characterized in that: The second electrical device group also includes an output rectifier diode assembly, the accommodating cavity includes a first power chamber and a second power chamber isolated from each other, the power switch tube assembly is arranged in the first power chamber, and the output rectifier diode assembly is arranged in the second power chamber, there are multiple heat-conducting assemblies, at least one of the heat-conducting assemblies is partially exposed in the first power chamber to be in thermal contact with the power switch tube assembly, and at least one of the heat-conducting assemblies is partially exposed in the second power chamber to be in thermal contact with the output rectifier diode assembly.

7. A wind tunnel heat dissipation type arc welding power supply device according to claim 6, characterized in that: The first power chamber, the wind tunnel flow channel and the second power chamber are arranged in sequence. In the wind tunnel flow channel, the heat conductive component exposed to the first power chamber and the heat conductive component exposed to the second power chamber are distributed left and right relative to the length direction of the wind tunnel flow channel.

8. The wind tunnel heat dissipation type 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 placement cavity group. There are multiple power modules and the output ends of the multiple power modules are connected in parallel. There are also multiple placement cavity groups. The power modules are arranged in the placement cavity groups one by one. The multiple placement cavity groups are arranged in layers from top to bottom or the multiple placement cavity groups are distributed from left to right.

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

10. The wind tunnel heat dissipation type arc welding power supply device according to claim 1, characterized in that: The arc welding power supply module also includes a control circuit board, which is connected to the power module. The shell 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.

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