Laser power supply cabinet

Abstract

The utility model discloses a laser power supply case, including case main part, switch module and oil water radiator module. The oil water radiator module is by oil water radiator, restricts the valve, water pump and circulation pipeline combination and is formed. The utility model passes through the circulation pipeline connection and draws out the hot oil in the case main part with the cooling water of external inflow in the oil water radiator and carries out the convection heat dissipation, and the water after heat dissipation is circulated back to the case main part again through the pipeline, and the cooling water of external inflow is connected to the switch module through the case external pipeline and gives the switch module heat dissipation. The water after heat dissipation is returned to the water outlet through the case external pipeline and is discharged. The water after the convection heat dissipation with the hot oil in the case main part is also discharged through the water outlet by the pipeline. The utility model discloses through high -efficient stratification, flow channel optimization, structure optimization and intelligent temperature control effectively improves the heat exchange efficiency, improves the equipment life, reduces the operation noise, and the compact structure optimization is also more favorable to equipment maintenance and installation.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for high-power electronic devices, specifically to a chassis device for a high-voltage pulsed laser power supply, which integrates a highly efficient dual-circulation liquid cooling system. Background Technology

[0002] When high-voltage pulsed laser power supplies are in operation, their internal power devices, such as switching modules (IGBTs and MOSFETs), generate a large amount of concentrated heat. If this heat cannot be dissipated in time, it will lead to increased junction temperature, decreased efficiency, reduced reliability, and even permanent damage. Traditional air-cooling methods are no longer sufficient to meet the heat dissipation requirements of such high-power-density devices.

[0003] In existing technologies, liquid cooling is widely used due to its high specific heat capacity and thermal conductivity. However, common liquid cooling systems often suffer from the following problems:

[0004] The heat dissipation channel design is simple, but there is still room for improvement in heat exchange efficiency.

[0005] The coolant comes into direct contact with electronic components, posing a risk of leakage.

[0006] Most systems are open-loop or simple closed-loop control, which cannot adjust the cooling intensity according to the real-time heat load, and the energy consumption and heat dissipation efficiency cannot achieve the optimal balance.

[0007] Therefore, there is an urgent need for a laser power supply chassis heat dissipation device with high heat dissipation efficiency, reliable operation, and intelligent controllability. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide a laser power supply chassis device that is compact in structure, has high heat dissipation efficiency, stable in operation, and is intelligently controllable.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A laser power supply chassis includes a chassis body, a switch module, and an oil-water radiator module.

[0011] The switch module consists of a support plate with an internal trapezoidal thread design, which is essentially a liquid-cooled plate. The support plate has a water inlet on the upper right side and a water outlet on the lower right side, facilitating the entry and exit of cooling water and carrying away the heat generated by the switch module. The support plate also features an internal trapezoidal thread design and is divided into four layers by aluminum plates, with staggered openings at both ends and a bent design at the bends.

[0012] The oil-water radiator consists of an oil-water radiator, a flow-limiting valve, a water pump, and circulation pipes. The radiator is divided into upper and lower layers: the upper layer is the cooling water zone, and the lower layer is the oil circulation zone, separated by an aluminum plate with trapezoidal threads to increase the heat exchange area. From the inlet to the outlet, the entire radiator is divided into four flow channels when viewed from above, and eight interlocking, near-right-angled trapezoidal chambers when viewed from the side. This allows cooling water and hot oil to flow through multiple chambers in a cross-flow manner, separated by an aluminum plate with threads. The aluminum plate has openings only at the tail and head. The cooling water zone and oil circulation zone of the radiator are arranged in a counter-current manner, with the cooling water inlet on the same side as the hot oil outlet and the cooling water outlet on the same side as the hot oil inlet, thereby maximizing the average heat exchange temperature difference throughout the flow channels and improving efficiency.

[0013] Furthermore, the switch module is made of two aluminum plates with internal threads and is divided into four layers by aluminum plates. The two ends have staggered openings and bends at the corners to extend the cooling water flow path, increase the heat exchange area, and make the flow field distribution more uniform.

[0014] Furthermore, a temperature sensor is installed on the circulation pipe at the oil inlet, oil outlet, and water outlet of the oil-water radiator, respectively. A control circuit board is installed next to the oil inlet as a control module. The control circuit board receives the signal from the temperature sensor and outputs a control signal to the water pump to adjust its speed, thereby maintaining the temperature inside the main body of the chassis within a set range, achieving intelligent temperature control and energy saving and noise reduction.

[0015] The beneficial effects of this utility model are as follows:

[0016] High-efficiency stratified heat exchange: Employing a dual-medium indirect cooling method combining "main unit oil cooling + water cooling radiator". Oil, with its excellent insulation, directly and reliably cools components within the main unit chassis; water, with its high specific heat capacity, dissipates heat. The two mediators exchange heat efficiently through the oil-water radiator, balancing safety and efficiency.

[0017] Optimized flow channel design for a large heat exchange area: The switch module and the oil-water radiator baffle both employ a trapezoidal thread design, forming multiple interlocking right-angled trapezoidal complex flow channels within the oil-water radiator, greatly increasing the heat exchange area. The counter-current arrangement design further enhances heat exchange efficiency.

[0018] Intelligent temperature control, energy-saving and reliable: The oil temperature is monitored in real time by a temperature sensor, and the water pump speed is dynamically adjusted by the control module. Heat dissipation is enhanced under high heat load, while low-speed operation is used under low heat load, ensuring temperature stability while reducing system energy consumption and operating noise.

[0019] Compact structure and high integration: The heat dissipation system is integrated with the main body of the power supply chassis. All components are integrated inside or on the surface of the chassis, resulting in a compact structure that is easy to install and maintain. Attached Figure Description

[0020] Figure 1 This is an overall structural block diagram of an embodiment of the present utility model;

[0021] Figure 2 This is a structural diagram of the oil-water radiator module of this utility model;

[0022] Figure 3 This is a structural diagram of the switch module of this utility model;

[0023] Figure 4 This is a flow path diagram of the internal flow path of the switch module carrier plate of this utility model;

[0024] Figure 5 This is a side sectional view of the oil-water radiator of this utility model;

[0025] Figure 6 This is a top sectional view of the oil-water radiator of this utility model;

[0026] Figure 7 This is a structural diagram of an oil-water radiator module with a circuit board and a temperature sensor added, according to another embodiment of the present invention.

[0027] In the diagram: 1. Oil-water radiator outlet, 2. Oil-water radiator inlet, 3. Oil-water radiator inlet, 4. Oil-water radiator outlet, 6. Side outlet, 7. Side inlet, 8. Switch module drain outlet, 9. Switch module inlet connection, 10. Switch module outlet connection, 11. Switch module outlet, 12. Switch module inlet, 21. Main unit outlet, 22. Main unit inlet, 23. First temperature sensor, 24. Second temperature sensor, 25. Third temperature sensor, 26. Control circuit board, 101. Oil-water radiator, 102. Oil-water radiator module, 103. Switch module, 105. Oil-water radiator, 106. Flow limiting valve, 107. Water pump. Detailed Implementation

[0028] The embodiments of the present invention will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, numerous specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0029] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0030] During operation, high-voltage pulsed laser power supplies generate a large amount of concentrated heat from their internal switching modules, high-voltage magnetic cores, and other components. If this heat cannot be dissipated in time, it will lead to increased junction temperature, decreased efficiency, reduced reliability, and even permanent damage. Traditional air-cooling methods are insufficient to meet the heat dissipation requirements of such high-power-density devices. Existing liquid cooling systems often involve direct contact between the coolant and electronic components, posing a risk of leakage. Furthermore, existing heat dissipation devices have simple heat dissipation channels and their heat dissipation efficiency needs improvement. Therefore, there is an urgent need for a laser power supply chassis heat dissipation device that is highly efficient, reliable, and intelligently controllable.

[0031] like Figure 1 As shown, this utility model discloses a laser power supply chassis, including a chassis body 101, an oil-water radiator module 102, and a switch module 103.

[0032] Specifically, the oil-water radiator module 102 is as follows: Figure 2 As shown, it includes an oil-water radiator 105, a flow-limiting valve 106, and a water pump 107. The oil-water radiator 105 is provided with four openings: opening 1 is the water outlet 1 of the oil-water radiator, opening 2 is the oil inlet 2 of the oil-water radiator, opening 3 is the water inlet 3 of the oil-water radiator, used to introduce cooling water, and opening 4 is the oil outlet 4 of the oil-water radiator, used to discharge the cooling oil cooled by the cooling water.

[0033] Specifically, the main body 101 of the chassis is provided with an oil outlet 21. The oil in the main body 101 exchanges heat energy with the working high-voltage magnetic core and becomes hot oil. The hot oil comes out through the oil outlet 21 of the main body, flows through the water pump 107, then through the flow limiting valve 106, and then through the oil inlet 2 of the oil-water radiator into the oil-water radiator 105.

[0034] Specifically, such as Figure 5 and 6 As shown, the entire oil-water radiator 105, viewed from above, is divided into four rectangular flow channels. Viewed from the side, it consists of eight interlocking, near-right-angled trapezoidal chambers, allowing cooling water and hot oil to flow through multiple chambers in a cross-flow manner. These chambers are separated by aluminum plates, which have openings only at the tail and head ends, with bends at turns to prevent scale buildup over time. The cooling water zone and oil circulation zone of the oil-water radiator 105 are arranged in a counter-current manner. The inlet 3 is located on the same side as the outlet 4, and the outlet 2 is located on the same side as the inlet 1, maximizing the average heat exchange temperature difference across the entire flow channel and improving efficiency.

[0035] Specifically, the same-side arrangement ensures that the coldest cooling water first contacts the hot oil that is about to dissipate its heat, while the hottest cooling water contacts the hottest oil that has just come out of the switching module. This ensures a large temperature difference for heat exchange throughout the process, maximizing heat exchange efficiency. The cooled oil exits the oil-water radiator 105 through the oil outlet 4, and then enters the main chassis 101 through the main chassis oil inlet 22 on the chassis body 101 to cool the high-voltage magnetic core and other components that are currently in operation.

[0036] Specifically, the oil-water radiator module 102 has five openings on the outside of the chassis: a side outlet 6, a side inlet 7, a switch module drain 8, a switch module inlet connection 9, and a switch module outlet connection 10. The side inlet 7 supplies water to the entire cooling system. After the cooling water flows in through the side inlet 7, one stream enters the oil-water radiator 105 through the oil-water radiator inlet 3, and another stream is piped to the switch module inlet connection 9. The switch module inlet connection 9 is then connected to the switch module inlet 12 through a pipe, and some of the cooling water then flows into the switch module 103 through the switch module inlet 12.

[0037] Specifically, such as Figure 4 As shown, the switch module 103 is made of two aluminum plates with trapezoidal threads on the inner side, and the interior is divided into four layers by aluminum plates. The two sides have staggered openings and a curved design at the bends. A water outlet is located on the upper right side of the aluminum plate, and a water inlet is located on the lower right side to facilitate the entry and exit of cooling water. The condensate flowing into the switch module through the water inlet 12 flows through the lower right inlet, passes through the internal chamber, carries away the heat generated by the switch module 103 during operation, and then flows through the upper right outlet to the switch module outlet 11. After passing through a pipe, it enters the switch module water outlet connection 10 and then the oil-water radiator module 102. The switch module water outlet connection 10 is connected to the switch module drain outlet 8 via a pipe, and the water is discharged from the chassis through outlet 8.

[0038] Specifically, throughout the process, the carrier plate in the switch module 103 is divided into four chambers, ensuring a long water flow path and sufficient heat dissipation. Simultaneously, the trapezoidal threads inside the carrier plate effectively disrupt the water boundary layer, greatly enhancing heat exchange efficiency. The trapezoidal thread design inside the oil-water radiator disrupts the water boundary layer; the counter-flow design ensures a large temperature difference between opposing flows, maximizing the average heat exchange temperature difference across the entire flow channel and improving heat exchange efficiency; while the trapezoidal cavity design significantly enhances turbulence, disrupts the thermal boundary layer, achieves a counter-flow arrangement, increases the heat exchange area, and improves mechanical strength and pressure resistance. Although it sacrifices some flow smoothness, it greatly improves heat exchange efficiency.

[0039] As another embodiment of this utility model, such as Figure 7As shown, a first temperature sensor 23, a second temperature sensor 24, and a third temperature sensor 25 are respectively added to the oil inlet 22, the oil outlet 21, and the water outlet 10 of the switch module's main unit. A control circuit board 26 is added next to the oil inlet 22 of the main unit of the oil-water radiator module 102 to receive the values ​​from the above three temperature sensors, monitor the oil temperature in real time, and dynamically adjust the water pump speed. Under high heat load, heat dissipation is enhanced; under low heat load, it operates at low speed, ensuring temperature stability while reducing system energy consumption and operating noise.

[0040] This invention effectively improves heat exchange efficiency, extends equipment life, and reduces operating noise through efficient layering, flow channel optimization, intelligent temperature control, and structural optimization. At the same time, the compact structural optimization also facilitates equipment maintenance and installation.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions 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 solutions of this utility model without departing from the spirit and scope of the technical solutions 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 laser power supply chassis, characterized in that, The laser power supply chassis includes a chassis body (101), a switch module (103), and an oil-water radiator module (102), wherein The switch module (103) is composed of a support plate with an internal trapezoidal thread design. The support plate has a water inlet on the upper right side and a water outlet on the lower right side to facilitate the entry and exit of cooling water. The oil-water radiator is composed of an oil-water radiator (105), a flow limiting valve (106), a water pump (107), and a circulation pipe. The oil-water radiator (105) is divided into two layers: the upper layer is the cooling water zone, and the lower layer is the oil circulation zone. They are separated by an aluminum plate with trapezoidal threads. The entire oil-water radiator (105) is divided into four rectangular flow channels when viewed from the inlet to the outlet, and into eight right-angled trapezoidal chambers when viewed from the side. They are separated by an aluminum plate with threads. The openings are staggered at the tail and head to facilitate the passage of cooling water and hot oil. The cooling water zone and the oil circulation zone of the oil-water radiator (105) are arranged in a counter-current manner, that is, the cooling water inlet is located on the same side as the hot oil outlet, and the cooling water outlet is located on the same side as the hot oil inlet.

2. The laser power supply chassis according to claim 1, characterized in that, The switch module (103) is made of two aluminum plates with trapezoidal threads inside and is divided into four layers inside by aluminum plates. It has openings at both ends and a curved design at the bends.

3. A laser power supply chassis according to claim 1, characterized in that, A temperature sensor is installed on the circulation pipe at the hot oil inlet, oil outlet and water outlet of the switch module (10) of the oil-water radiator (105). A control circuit board (26) is installed at the oil inlet as a control module. The control circuit board (26) receives the signal from the temperature sensor and outputs a control signal to the water pump (107) to adjust its speed so as to maintain the temperature inside the main body of the chassis (101) within the set range.

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