Air cooling heat dissipation structure of welding power source
By employing a combined structure of axial fan, air collection chamber, and heat dissipation duct in the welding power supply, along with aluminum alloy and stiffener design, the heat dissipation problem of high-power welding power supplies is solved, achieving a more efficient and lower-cost heat dissipation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-04-14
AI Technical Summary
Existing air-cooled heat dissipation structures for welding power supplies cannot meet the heat dissipation requirements of high-power welding power supplies, and the heat dissipation fins are made of copper, resulting in high production costs.
It adopts a combined structure of axial fan, air collection cavity and heat dissipation duct, and utilizes heat dissipation aluminum block and rib plate design, combined with aluminum alloy extrusion molding and split air collection cavity to optimize heat conduction efficiency and airflow resistance, reduce production costs and improve heat dissipation efficiency.
It improves the heat dissipation of the welding power supply, reduces thermal resistance by 35%, and achieves a measured heat dissipation efficiency of 0.73℃/W. It also has lower energy consumption, lower noise, and better maintainability.
Smart Images
Figure CN224124446U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding power supply technology, and in particular to a wind-cooled heat dissipation structure for a welding power supply. Background Technology
[0002] A welding power supply is a device used to provide electrical energy to welding equipment. It converts the power supply into the current and voltage required for the welding process through a series of circuits and controllers. The main function of a welding power supply is to provide stable electrical energy to meet the arc energy required during welding. Heat dissipation is crucial for welding power supplies because the welding process generates a large amount of heat. A proper heat dissipation design ensures stable operation of the power supply over a long period, preventing damage caused by overheating. Most existing welding power supplies use cooling fans installed at the air inlet to draw outside air into the casing, and copper heat sink fins are installed inside the casing to reduce the temperature of the airflow and improve overall heat dissipation efficiency. However, this overall heat dissipation effect is insufficient for the heat dissipation requirements of high-power welding power supplies, and the copper heat sink fins result in high production costs. Utility Model Content
[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.
[0004] The technical problem to be solved by this invention is how to improve the heat dissipation effect of the air-cooled heat dissipation structure on the welding power source.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a wind-cooled heat dissipation structure for a welding power supply, wherein the welding power supply is provided with an air inlet and an air outlet, and the wind-cooled heat dissipation structure includes an axial flow fan, an air collection cavity, and a heat dissipation duct. The axial flow fan is located at the air outlet of the welding power supply, and the outlet end of the air collection cavity is connected to the axial flow fan to guide the airflow to flow evenly, so that the airflow can pass evenly through the air duct formed by the heat dissipation aluminum block. The heat dissipation duct is located at the inlet end of the air collection cavity to reduce the temperature of the heat dissipation airflow.
[0006] As a preferred embodiment of the air-cooled heat dissipation structure of the welding power source of the present invention, the heat dissipation duct includes a first heat dissipation aluminum block, a second heat dissipation aluminum block and a sealing element. The first heat dissipation aluminum block and the second heat dissipation aluminum block are symmetrically arranged through the sealing element to form a complete cooling and heat dissipation channel. Multiple ribs are evenly arranged laterally on the inner sides of the first heat dissipation aluminum block and the second heat dissipation aluminum block.
[0007] As a preferred embodiment of the air-cooled heat dissipation structure of the welding power source described in this utility model, the spacing width of the stiffeners W = 8 ± 0.5 mm, the height of the stiffeners H = 44 ± 2 mm, and the height H of the stiffeners is 5.2 to 5.8 times the spacing width W, i.e., the height-to-width ratio H / W = 5.5 ± 0.3, in order to balance the heat conduction efficiency and airflow resistance, so that the stiffeners can carry away enough heat, thereby achieving the best heat dissipation effect.
[0008] As a preferred embodiment of the air-cooled heat dissipation structure of the welding power source described in this utility model, the stiffener adopts a gradually thickened structure at the root, with a root thickness of 3-3.5mm and a top thickness of 1-1.3mm. This not only reduces airflow resistance but also increases the surface area of the stiffener, thereby increasing the heat dissipation area.
[0009] As a preferred embodiment of the air-cooled heat dissipation structure of the welding power source described in this utility model, the gas collecting cavity is assembled by injection molding of heat-resistant industrial plastic in two parts. The gas collecting cavity adopts a split design, which not only reduces production costs but also increases the maintainability of the gas collecting cavity.
[0010] As a preferred embodiment of the air-cooled heat dissipation structure of the welding power source described in this utility model, the first heat dissipation aluminum block and the second heat dissipation aluminum block are both formed by aluminum alloy extrusion, which not only reduces the production cost of the heat dissipation aluminum block, but also improves the production efficiency.
[0011] As a preferred embodiment of the air-cooled heat dissipation structure of the welding power source described in this utility model, the sealing element is a heat-resistant and insulating mica sheet to ensure the sealing performance of the entire heat dissipation duct.
[0012] Beneficial effects:
[0013] 1. By coordinating the axial fan, air collection chamber, and heat dissipation duct, the heat dissipation effect of the air-cooled heat dissipation structure on the welding power supply is improved;
[0014] 2. The heat dissipation aluminum block adopts an aluminum alloy extrusion molding process, which not only reduces manufacturing costs but also improves production efficiency;
[0015] 3. Through optimized design of the rib spacing width and height, thermal resistance is reduced by 35%, and the measured heat dissipation efficiency is 0.73℃ / W, which is lower energy consumption and higher efficiency than other products;
[0016] 4. The axial fan and heat sink are integrated into one unit by the air collection cavity, which reduces turbulence and improves the uniformity of air speed, thereby improving the heat dissipation efficiency of air cooling.
[0017] 5. The gas collection chamber adopts a split structure, which reduces the cost of injection molds, i.e., the cost of production and manufacturing, and also facilitates later maintenance and repair. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0019] Figure 1 This is a schematic diagram of the air-cooled heat dissipation structure and the installation structure of the welding power supply.
[0020] Figure 2 This is a schematic diagram of the overall structure of the air-cooled heat dissipation structure for the welding power supply.
[0021] Figure 3 This is a schematic diagram of the split structure of the air-cooled heat dissipation structure for the welding power supply.
[0022] Figure 4 A three-dimensional structural diagram of the first heat dissipation aluminum block of the air-cooled heat dissipation structure for the welding power supply.
[0023] Figure 5 A side view of the first heat sink aluminum block of the air-cooled heat dissipation structure for the welding power supply.
[0024] Figure 6 This is a schematic diagram of the gas collection cavity of the air-cooled heat dissipation structure for a welding power source.
[0025] Figure 7 This is a schematic diagram of the gas collection cavity of the air-cooled heat dissipation structure of the welding power source from another angle.
[0026] Figure 8 Simulation of the aspect ratio and thermal conductivity of stiffeners Figure 1 .
[0027] Figure 9 Simulation of the aspect ratio and thermal conductivity of stiffeners Figure 2 .
[0028] Figure 10 The figure shows the simulation curves of the height-to-width ratio of the stiffener and the thermal conductivity temperature.
[0029] Figure 11 The figure shows the simulation curves of the height-to-width ratio of the stiffener and the gas flow resistance.
[0030] In the diagram: 1. Welding power source; 11. Air inlet; 12. Air outlet; 2. Axial fan; 3. Air collection chamber; 4. Heat dissipation duct; 41. First heat dissipation aluminum block; 42. Second heat dissipation aluminum block; 43. Sealing element; 44. Rib plate. Detailed Implementation
[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0032] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0033] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0034] Example
[0035] Reference Figures 1-11 This embodiment provides a wind-cooled heat dissipation structure for a welding power supply. The welding power supply 1 is provided with an air inlet 11 and an air outlet 12. The wind-cooled heat dissipation structure includes an axial fan 2, a gas collecting chamber 3, and a heat dissipation duct 4. The axial fan 2 is located at the air outlet 12 of the welding power supply 1. The outlet end of the gas collecting chamber 3 is connected to the axial fan 2 to guide the airflow to flow evenly. The heat dissipation duct 4 is located at the inlet end of the gas collecting chamber 3 to reduce the temperature of the heat dissipation airflow.
[0036] The air-cooled heat dissipation structure in this embodiment is mainly applied to a high-power welding power supply 1. Air outlets 12 and air inlets 11 are respectively provided on the left and right sides of the welding power supply 1. This air-cooled heat dissipation structure mainly consists of an axial fan 2, an air collection chamber 3, and a heat dissipation duct 4. The axial fan 2, air collection chamber 3, and heat dissipation duct 4 are integrally connected. Specifically, the axial fan 2 is fixedly installed at the air outlet 12 of the welding power supply 1. The axial fan 2 blows air outward, creating a negative pressure zone inside the welding power supply 1. External cold air is evenly drawn into the welding power supply 1, efficiently dissipating heat. Compared to installing a cooling fan at the air inlet 11... In this embodiment, the noise generated by fixing the axial fan 2 at the air outlet 12 of the welding power supply 1 is smaller. An air collecting cavity 3 is fixedly installed at the air inlet end of the axial fan 2 to guide the airflow to flow evenly, so that the airflow can pass evenly through the air channel formed by the heat dissipation aluminum block along the gap of the stiffener 44, which plays the role of optimizing the heat dissipation air channel 4. A heat dissipation air channel 4 is fixedly installed at the inlet end of the air collecting cavity 3 to reduce the temperature of the heat dissipation airflow, thereby improving the heat dissipation effect of the air-cooled heat dissipation structure on the welding power supply 1. This embodiment adopts a high-efficiency heat dissipation structure of forced air cooling with negative pressure to meet the heat dissipation requirements of the high-power welding power supply 1.
[0037] Specifically, the heat dissipation duct 4 includes a first heat dissipation aluminum block 41, a second heat dissipation aluminum block 42, and a sealing element 43. The first heat dissipation aluminum block and the second heat dissipation aluminum block are symmetrically arranged through the sealing element to form a complete cooling and heat dissipation channel. Multiple ribs 44 are evenly arranged laterally on the inner side of the first heat dissipation aluminum block 41 and the second heat dissipation aluminum block 42.
[0038] In this embodiment, the heat dissipation duct 4 is mainly composed of a first heat dissipation aluminum block 41, a second heat dissipation aluminum block 42, and a sealing element 43. The first heat dissipation aluminum block 41, the second heat dissipation aluminum block 42, and the sealing element 43 are integrally connected. Specifically, the first heat dissipation aluminum block 41 and the second heat dissipation aluminum block 42 are in a cuboid structure and are symmetrically arranged. The sealing element 43 is symmetrically installed on the upper and lower sides of the first heat dissipation aluminum block 41 and the second heat dissipation aluminum block 42, so that the first heat dissipation aluminum block 41, the second heat dissipation aluminum block 42, and the sealing element 43 form a complete cooling and heat dissipation channel to reduce the temperature of the cooling air. Several ribs 44 are evenly arranged laterally on the inner side of the first heat dissipation aluminum block 41 and the second heat dissipation aluminum block 42, thereby further improving the heat dissipation effect of the heat dissipation duct 4.
[0039] Furthermore, the spacing width W of the stiffening plate 44 is 8±0.5mm, the height H of the stiffening plate 44 is 44±2mm, and the height H of the stiffening plate 44 is 5.2 to 5.8 times the spacing width W of the stiffening plate 44, that is, the height-to-width ratio H / W is 5.5±0.3.
[0040] In this embodiment, the spacing width W of the stiffener 44 is designed to be 7.5–8.5 mm, and the height H of the stiffener 44 is designed to be 42–46 mm. The height H of the stiffener 44 is 5.2–5.8 times the spacing width W, i.e., the height-to-width ratio H / W = 5.5 ± 0.3. Preferably, in this embodiment, the height-to-width ratio H / W is designed to be 5.5 to balance heat conduction efficiency and airflow resistance, thereby achieving the best heat dissipation effect. Figures 8-11 As shown, extensive simulations have revealed that when the aspect ratio H / W = 5.5, both the thermal conduction temperature of the stiffener 44 and the gas flow resistance through the gaps in the stiffener 44 are at their lowest values. The stiffener 44 structure used in this embodiment can reduce thermal resistance by 35%, and the measured heat dissipation efficiency is 0.73℃ / W. Compared with other products, it has lower energy consumption and higher heat dissipation efficiency.
[0041] Furthermore, the stiffener 44 adopts a gradually thickened structure at the root, with a root thickness of 3 to 3.5 mm and a top thickness of 1 to 1.3 mm.
[0042] In this embodiment, the stiffener 44 is designed as a gradually thickening structure at the root, that is, the size of the stiffener 44 gradually decreases from the root to the top. Specifically, the thickness of the stiffener 44 at the root is 3 to 3.5 mm and the thickness at the top is 1 to 1.3 mm. Preferably, in this embodiment, the thickness of the stiffener 44 at the root is designed to be 3.5 mm and the thickness at the top is designed to be 1.3 mm. This not only reduces airflow resistance but also increases the surface area of the stiffener 44, that is, increases the heat dissipation area, thereby further improving the heat dissipation effect of the air-cooled heat dissipation structure on the welding power source 1.
[0043] Furthermore, the gas collection chamber 3 is assembled from heat-resistant industrial plastic components through split injection molding.
[0044] This embodiment designs the gas collecting chamber 3 as a split structure and assembles it after injection molding with heat-resistant industrial plastic. This not only reduces the production cost of the gas collecting chamber 3, but also increases its maintainability, making it easier for future maintenance and repair.
[0045] Furthermore, both the first heat dissipation aluminum block 41 and the second heat dissipation aluminum block 42 are formed by aluminum alloy extrusion.
[0046] In this embodiment, both the first heat dissipation aluminum block 41 and the second heat dissipation aluminum block 42 are formed by aluminum alloy extrusion molding. The aluminum alloy replaces the original copper to reduce the cost of raw materials, thereby reducing the production cost of the heat dissipation aluminum block. In addition, the use of aluminum alloy also facilitates the manufacturing of heat dissipation aluminum blocks using the extrusion molding process. This embodiment adopts the aluminum alloy extrusion molding process, which improves the processing efficiency and thus improves the production efficiency of heat dissipation aluminum blocks.
[0047] Specifically, the seal 43 is a heat-resistant and insulating mica sheet.
[0048] In this embodiment, heat-resistant and insulating mica sheets are used as sealing elements 43 to ensure the airtightness of the entire heat dissipation duct 4.
[0049] When in use, the axial fan 2 at the air outlet 12 of the welding power supply 1 is turned on. The axial fan 2 blows air outward, creating a negative pressure zone inside the welding power supply 1. Cold air from the outside is evenly drawn into the welding power supply 1 to achieve rapid heat dissipation, thereby improving the heat dissipation effect of the air-cooled heat dissipation structure on the welding power supply 1. The axial fan 2 blows air outward, causing the high-temperature airflow inside the welding power supply 1 to enter the heat dissipation duct 4. It flows through the gaps of the ribs 44 on the inner side of the first heat dissipation aluminum block 41 and the second heat dissipation aluminum block 42. The ribs 44 can quickly cool down the heat dissipation airflow, thereby further improving the heat dissipation effect of the air-cooled heat dissipation structure on the welding power supply 1. In addition, during this process, the air collection cavity 3 on the air inlet end of the axial fan 2 can guide the heat dissipation airflow to flow evenly along the gaps of the ribs 44, so as to better cool down the heat dissipation airflow quickly, thereby further improving the heat dissipation effect of the air-cooled heat dissipation structure on the welding power supply 1.
[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A cooling structure for a welding power source, wherein the welding power source (1) is provided with an air inlet (11) and an air outlet (12), characterized in that: The air-cooled heat dissipation structure includes an axial fan (2), an air collection chamber (3), and a heat dissipation duct (4). The axial fan (2) is located at the air outlet (12) of the welding power source (1). The outlet end of the air collection chamber (3) is connected to the axial fan (2) to guide the airflow to flow evenly. The heat dissipation duct (4) is located at the inlet end of the air collection chamber (3) to reduce the temperature of the heat dissipation airflow.
2. The air-cooled heat dissipation structure of the welding power source as described in claim 1, characterized in that: The heat dissipation duct (4) includes a first heat dissipation aluminum block (41), a second heat dissipation aluminum block (42), and a sealing element (43). The first heat dissipation aluminum block (41) and the second heat dissipation aluminum block (42) are symmetrically arranged through the sealing element (43) to form a complete cooling and heat dissipation channel. Multiple ribs (44) are evenly arranged laterally on the inner side of the first heat dissipation aluminum block (41) and the second heat dissipation aluminum block (42).
3. The air-cooled heat dissipation structure of the welding power source as described in claim 2, characterized in that: The spacing width of the stiffening plate (44) is W = 8 ± 0.5 mm, the height of the stiffening plate (44) is H = 44 ± 2 mm, and the height H of the stiffening plate (44) is 5.2 to 5.8 times the spacing width W of the stiffening plate (44), that is, the height-to-width ratio H / W = 5.5 ± 0.
3.
4. The air-cooled heat dissipation structure of the welding power source as described in claim 2, characterized in that: The stiffener (44) adopts a gradually thickened structure at the root, with a root thickness of 3 to 3.5 mm and a top thickness of 1 to 1.3 mm.
5. The air-cooled heat dissipation structure of the welding power source as described in claim 1, characterized in that: The gas collection chamber (3) is assembled from heat-resistant industrial plastic parts through injection molding.
6. The air-cooled heat dissipation structure of the welding power source as described in claim 2, characterized in that: The first heat dissipation aluminum block (41) and the second heat dissipation aluminum block (42) are both formed by aluminum alloy extrusion.
7. The air-cooled heat dissipation structure of the welding power source as described in claim 2, characterized in that: The sealing element (43) is a heat-resistant and insulating mica sheet.