A temperature control device and system for a liquid-cooled fiber laser

Abstract

This utility model discloses a temperature control device and system for a liquid-cooled fiber laser. The device includes: a controller, a liquid path parameter monitoring element, a connecting component, and a reversing component. The inlet and outlet of the liquid-cooled fiber laser are connected to the inlet and outlet pipes, respectively. Liquid path parameter monitoring elements for monitoring the temperature and / or flow rate of the coolant are installed at both the inlet and outlet. The connecting component connects the inlet and outlet pipes. The reversing component for changing the coolant flow direction is located at the connection points between the connecting component and the inlet pipe, and between the connecting component and the outlet pipe. The controller is electrically connected to the liquid path parameter monitoring element and the reversing component. This utility model offers a low-cost solution that can achieve multiple temperature controls above the centralized refrigerant temperature without disrupting the existing centralized refrigeration pipeline layout, while simultaneously maintaining hydraulic pressure and liquid flow rate.

Description

Technical Field

[0001] This utility model relates to the field of liquid-cooled fiber laser technology, and in particular to a temperature control device and system for a liquid-cooled fiber laser. Background Technology

[0002] When a fiber laser is working, its internal optical components need to be kept at a suitable operating temperature because the laser generates a lot of waste heat. If the laser cannot dissipate heat in time, the output parameters will change drastically or even burn out.

[0003] Lasers typically require heat sinks or water-cooled plates for cooling. Low-power fiber lasers generally use air cooling, while medium- and high-power fiber lasers commonly use water cooling. Currently, the cooling water temperature for fiber lasers is generally required to be set at around 25°C. In laser manufacturing plants, centralized cooling systems are usually installed using a piped water supply system. However, different process testing stages require different water temperatures, necessitating additional temperature modulation, such as for temperature drift testing and high-temperature aging tests. The conventional approach is to add small to medium-sized chillers to adjust the temperature for different conditions. While this solves the problem, the added chillers occupy limited space and create additional equipment and energy costs. Utility Model Content

[0004] This invention provides a temperature control device and system for a liquid-cooled fiber laser. It has a low cost and can achieve various temperature controls above the centralized cooling liquid temperature without disrupting the existing centralized cooling pipeline layout, while maintaining the hydraulic pressure and liquid flow rate.

[0005] In a first aspect, this utility model provides a temperature control device for a liquid-cooled fiber laser, comprising: a controller, a liquid circuit parameter monitoring element, a communication component, and a commutation component;

[0006] The inlet and outlet of the liquid-cooled fiber laser are connected to the inlet and outlet pipes, respectively. Both the inlet and outlet are equipped with liquid path parameter monitoring elements for monitoring the temperature and / or flow rate of the coolant. The connecting component connects the inlet pipe and the outlet pipe. The reversing component for changing the coolant flow direction is located at the connection between the connecting component and the inlet pipe, and at the connection between the connecting component and the outlet pipe.

[0007] The controller is electrically connected to the fluid circuit parameter monitoring element and the commutation assembly.

[0008] Optionally, the connecting component includes a first connecting pipe, a second connecting pipe, a third connecting pipe, and a fourth connecting pipe;

[0009] The first end of the first connecting pipe, the first end of the second connecting pipe, the first end of the third connecting pipe, and the first end of the fourth connecting pipe are all connected to the inlet pipe, and the second end of the first connecting pipe, the second end of the second connecting pipe, the second end of the third connecting pipe, and the second end of the fourth connecting pipe are all connected to the outlet pipe.

[0010] The first distance between the first end of the first connecting pipe and the inlet is equal to the second distance between the second end of the second connecting pipe and the outlet.

[0011] The third distance between the second end of the first connecting pipe and the outlet is equal to the fourth distance between the first end of the second connecting pipe and the inlet.

[0012] The fifth distance between the first end of the third connecting pipe and the inlet is equal to the sixth distance between the second end of the fourth connecting pipe and the outlet.

[0013] The seventh distance between the second end of the third connecting pipe and the outlet is equal to the eighth distance between the first end of the fourth connecting pipe and the inlet.

[0014] Wherein, the first distance is less than the third distance, the third distance is less than the fifth distance, and the fifth distance is less than the seventh distance.

[0015] Optionally, the inlet pipe is provided with a first water storage pipe, and the outlet pipe is provided with a second water storage pipe;

[0016] The first water storage pipe is located between the first end of the second connecting pipe and the first end of the third connecting pipe;

[0017] The second water storage pipe is located between the second end of the first connecting pipe and the second end of the third connecting pipe.

[0018] Optionally, both the first water storage pipe and the second water storage pipe include multiple curved shapes.

[0019] Optionally, the reversing assembly includes a first three-way valve, a second three-way valve, a third three-way valve, and a fourth three-way valve;

[0020] Both the first three-way valve and the third three-way valve are located at the connection between the water inlet pipe and the connecting component;

[0021] Both the second three-way valve and the fourth three-way valve are located at the connection between the water outlet pipe and the connecting component;

[0022] The ninth distance between the first three-way valve and the water inlet is equal to the tenth distance between the second three-way valve and the water outlet;

[0023] The eleventh distance between the third three-way valve and the inlet is equal to the twelfth distance between the fourth three-way valve and the outlet.

[0024] Optionally, the ninth distance is equal to the first distance, and the eleventh distance is equal to the fifth distance;

[0025] Alternatively, the ninth distance is equal to the first distance, and the eleventh distance is equal to the seventh distance;

[0026] Alternatively, the ninth distance is equal to the third distance, and the eleventh distance is equal to the fifth distance;

[0027] Alternatively, the ninth distance is equal to the third distance, and the eleventh distance is equal to the seventh distance.

[0028] Secondly, this utility model embodiment also provides a temperature control system for a liquid-cooled fiber laser, including the temperature control device for the liquid-cooled fiber laser and the liquid-cooled fiber laser described in the first aspect.

[0029] The first end of the inlet pipe and the first end of the outlet pipe of the liquid-cooled fiber laser are both connected to the centralized cooling pipe. The second end of the inlet pipe is connected to the inlet of the liquid-cooled fiber laser, and the second end of the outlet pipe is connected to the outlet of the liquid-cooled fiber laser.

[0030] This invention provides a temperature control device and system for a liquid-cooled fiber laser. A connecting component connects an inlet water pipe and an outlet water pipe. Reversing components for changing the coolant flow direction are located at the connections between the connecting component and the inlet water pipe, and at the connections between the connecting component and the outlet water pipe. A controller controls the state of the reversing components, thereby changing the coolant flow direction. This method is low-cost and can achieve various temperature controls above the centralized refrigerant temperature without disrupting the existing centralized cooling pipeline layout, while also avoiding changes to hydraulic pressure and liquid flow rate.

[0031] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in 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.

[0033] Figure 1 This is a schematic diagram of the structure of a temperature control device for a liquid-cooled fiber laser provided in an embodiment of this utility model;

[0034] Figure 2 This is a schematic diagram of the structure of another temperature control device for a liquid-cooled fiber laser provided in this embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of another temperature control device for a liquid-cooled fiber laser provided in this embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the structure of another temperature control device for a liquid-cooled fiber laser provided in this embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of another temperature control device for a liquid-cooled fiber laser provided in this embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the structure of another temperature control device for a liquid-cooled fiber laser provided in this embodiment of the present invention;

[0039] Figure 7 This is a schematic diagram of the structure of another temperature control device for a liquid-cooled fiber laser provided in this embodiment of the present invention;

[0040] Figure 8 This is a predicted water temperature regulation curve provided by an embodiment of the present invention;

[0041] Figure 9 This is a predicted water flow curve provided by an embodiment of the present invention;

[0042] Figure 10 This is a flowchart of a temperature control method for a liquid-cooled fiber laser provided in an embodiment of this utility model;

[0043] Figure 11 This is a flowchart of another temperature control method for a liquid-cooled fiber laser provided in an embodiment of this utility model. Detailed Implementation

[0044] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0046] Figure 1 This is a schematic diagram of the structure of a temperature control device for a liquid-cooled fiber laser provided in an embodiment of this utility model. (Refer to...) Figure 1 The device includes: a controller (not shown in the accompanying drawings), a liquid flow parameter monitoring element (not shown in the accompanying drawings), a connecting component 100, and a reversing component 200; the inlet 310 and outlet 320 of the liquid-cooled fiber laser 300 are connected to the inlet pipe 330 and outlet pipe 340, respectively, and both the inlet 310 and outlet 320 are equipped with liquid flow parameter monitoring elements for monitoring the temperature and / or flow rate of the coolant; the connecting component 100 connects the inlet pipe 330 and the outlet pipe 340; the reversing component 200 for changing the flow direction of the coolant is located at the connection between the connecting component 100 and the inlet pipe 330 and at the connection between the connecting component 100 and the outlet pipe 340. The controller is electrically connected to the liquid flow parameter monitoring element and the reversing component 200.

[0047] It is understood that in the schematic diagram of the temperature control device for the liquid-cooled fiber laser provided by this utility model, green indicates that the liquid in the pipe is a low-temperature liquid, orange indicates that the liquid in the pipe is a high-temperature liquid, and blue indicates that the liquid in the pipe is a non-flowing liquid.

[0048] It should be noted that the first end of the inlet pipe 330 and the first end of the outlet pipe 340 of the liquid-cooled fiber laser 300 are both connected to the centralized cooling pipe. The second end of the inlet pipe 330 is connected to the inlet 310 of the liquid-cooled fiber laser 300, and the second end of the outlet pipe 340 is connected to the outlet 320 of the liquid-cooled fiber laser 300. The connecting component 100 connects the inlet pipe 330 and the outlet pipe 340. The reversing component 200 for changing the flow direction of the coolant is located at the connection points between the connecting component 100 and the inlet pipe 330 and between the connecting component 100 and the outlet pipe 340. After the controller obtains the liquid path parameters monitored by the liquid path parameter monitoring element, it can change the flow direction of the coolant by controlling the state of the reversing component 200 according to the liquid path parameters and the preset temperature value. The cryogenic liquid entering the liquid-cooled fiber laser 300 through inlet 310 is heated by the liquid-cooled fiber laser 300, mixed with newly injected cryogenic liquid, and then re-enters the liquid-cooled fiber laser 300 through inlet 310. After multiple mixing processes, the temperature of the liquid flowing through the liquid-cooled fiber laser 300 reaches a preset temperature. The liquid path parameters include the temperature and / or flow rate of the coolant. The controller can be a host computer or a PLC decision module.

[0049] This embodiment of the invention sets up a connecting component 100 to connect the inlet pipe 330 and the outlet pipe 340, and a reversing component 200 for changing the coolant flow direction is set at the connection points between the connecting component 100 and the inlet pipe 330 and between the connecting component 100 and the outlet pipe 340. A controller is used to control the state of the reversing component 200, thereby changing the coolant flow direction. This method has low cost and can achieve circulating water supply without disrupting the existing centralized refrigeration pipeline layout, enabling various temperature controls above the centralized refrigeration liquid temperature, while also avoiding changes to hydraulic pressure and liquid flow rate.

[0050] Figure 2 This is a schematic diagram of the structure of another temperature control device for a liquid-cooled fiber laser provided in this embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of another temperature control device for a liquid-cooled fiber laser provided in this embodiment of the present invention. Figure 4 This is a schematic diagram of another temperature control device for a liquid-cooled fiber laser provided in this embodiment of the present invention. Optionally, based on the above embodiment, refer to... Figures 1-4The connecting component 100 includes a first connecting pipe 110, a second connecting pipe 120, a third connecting pipe 130, and a fourth connecting pipe 140; the first ends of the first connecting pipe 110, the second connecting pipe 120, the third connecting pipe 130, and the fourth connecting pipe 140 are all connected to the inlet pipe 330, and the second ends of the first connecting pipe 110, the second connecting pipe 120, the third connecting pipe 130, and the fourth connecting pipe 140 are all connected to the outlet pipe 340; the first distance between the first end of the first connecting pipe 110 and the inlet 310 is equal to the first distance between the second connecting pipe 120 and the inlet 310, and the first distance between the first end of the first connecting pipe 110 and the inlet 310 is equal to the first distance between the second connecting pipe 120 and the inlet 330. The second end of the first connecting pipe 110 is at a second distance equal to the outlet 320; the third distance between the second end of the first connecting pipe 110 and the outlet 320 is equal to the fourth distance between the first end of the second connecting pipe 120 and the inlet 310; the fifth distance between the first end of the third connecting pipe 130 and the inlet 310 is equal to the sixth distance between the second end of the fourth connecting pipe 140 and the outlet 320; the seventh distance between the second end of the third connecting pipe 130 and the outlet 320 is equal to the eighth distance between the first end of the fourth connecting pipe 140 and the inlet 310; wherein, the first distance is less than the third distance, the third distance is less than the fifth distance, and the fifth distance is less than the seventh distance.

[0051] It is understood that this embodiment of the present invention can change the flow direction of the coolant by controlling the state of the reversing component 200, so that the cryogenic liquid entering the liquid-cooled fiber laser 300 from the inlet 310, after being heated by the liquid-cooled fiber laser 300, mixes with the newly injected cryogenic liquid and then enters the liquid-cooled fiber laser 300 from the inlet 310 again. After multiple mixing, the temperature of the liquid flowing through the liquid-cooled fiber laser 300 can reach the preset temperature.

[0052] For details, please refer to Figure 1 and Figure 4 ,exist Figure 1 and Figure 4 In the indicated state, the first end of the first three-way valve 210 connected to the connecting assembly 100 is closed; the first end of the second three-way valve 220 connected to the connecting assembly 100 is closed; the first end of the third three-way valve 230 connected to the connecting assembly 100 is closed; and the first end of the fourth three-way valve 240 connected to the connecting assembly 100 is closed. (Reference) Figure 2 and Figure 3 ,exist Figure 2 and Figure 3 In this state, the second end of the first three-way valve 210 furthest from the inlet 310 is closed; the second end of the second three-way valve 220 furthest from the outlet 320 is closed; the third end of the third three-way valve 230 closest to the inlet 310 is closed; and the third end of the fourth three-way valve 240 closest to the outlet 320 is closed. (Continue to refer to...) Figure 1When the state of commutator 200 is as follows Figure 1 As shown, at this time, the constant-temperature cryogenic liquid supplied by the centralized cooling pipeline is used directly to dissipate heat from the liquid-cooled fiber laser 300. When the state of the commutation component 200 is as shown... Figure 2 As shown, at this time, the low temperature liquid flows from the fourth connecting pipe 140 to the outlet pipe 340, continuously pushing the high temperature liquid in the outlet pipe 340 into the inlet 310. At the same time, the high temperature liquid heated inside the liquid-cooled fiber laser 300 is continuously pushed into the inlet pipe 330 through the outlet 320. Figure 3 for Figure 2 A completed state, Figure 4 This is a state after the commutation component 200 reverses again. At this point, the cryogenic liquid in the pipe pushes the high-temperature liquid in the inlet pipe 330 into the inlet 310, achieving secondary heating. Simultaneously, the high-temperature liquid, heated internally by the liquid-cooled fiber laser 300, is continuously pushed into the outlet pipe 340 through the outlet 320. The controller obtains the coolant temperature and / or flow rate, or through time feedback, and adjusts accordingly. Figure 2 , Figure 3 , Figure 4 The cyclical switching of states can maintain a slow and continuous increase in liquid temperature. If cooling is required, the system can switch to maintain the same state. Figure 1 The system can achieve various temperature controls above the centralized refrigeration pipeline water temperature by combining heating and cooling operations, without changing the water pressure and flow rate.

[0053] Optionally, based on the above embodiments, continue to refer to... Figures 1-4 The inlet pipe 330 is provided with a first water storage pipe 331, and the outlet pipe 340 is provided with a second water storage pipe 341; the first water storage pipe 331 is located between the first end of the second connecting pipe 120 and the first end of the third connecting pipe 130; the second water storage pipe 341 is located between the second end of the first connecting pipe 110 and the second end of the third connecting pipe 130.

[0054] It is understandable that the inlet pipe 330 is equipped with a first water storage pipe 331 and the outlet pipe 340 is equipped with a second water storage pipe 341, which can store the heated liquid and facilitate the rapid attainment of the preset liquid temperature.

[0055] Optionally, based on the above embodiments, both the first water storage pipe 331 and the second water storage pipe 341 include multiple curved shapes.

[0056] Specifically, the first water storage pipe 331 and the second water storage pipe 341 can be bow-shaped water storage pipes or other water storage pipes with curved shapes, as long as they can store water.

[0057] Figure 5This is a schematic diagram of the structure of another temperature control device for a liquid-cooled fiber laser provided in this embodiment of the present invention. Figure 6 This is a schematic diagram of the structure of another temperature control device for a liquid-cooled fiber laser provided in this embodiment of the present invention. Figure 7 This is a schematic diagram of the structure of another temperature control device for a liquid-cooled fiber laser provided in an embodiment of this utility model. Optionally, based on the above embodiment, refer to... Figures 1 to 7 The reversing assembly 200 includes a first three-way valve 210, a second three-way valve 220, a third three-way valve 230, and a fourth three-way valve 240. The first three-way valve 210 and the third three-way valve 230 are both located at the connection between the inlet pipe 330 and the connecting assembly 100. The second three-way valve 220 and the fourth three-way valve 240 are both located at the connection between the outlet pipe 340 and the connecting assembly 100. The ninth distance between the first three-way valve 210 and the inlet 310 is equal to the tenth distance between the second three-way valve 220 and the outlet 320. The eleventh distance between the third three-way valve 230 and the inlet 310 is equal to the twelfth distance between the fourth three-way valve 240 and the outlet 320.

[0058] Among them, the first three-way valve 210, the second three-way valve 220, the third three-way valve 230 and the fourth three-way valve 240 are all solenoid valves, and the state of the first three-way valve 210, the second three-way valve 220, the third three-way valve 230 and the fourth three-way valve 240 can be controlled by the controller.

[0059] Optionally, based on the above embodiments, in one embodiment, reference is made to... Figure 5 The ninth distance is equal to the first distance, and the eleventh distance is equal to the fifth distance. Alternatively, in one embodiment, refer to... Figures 1-4 The ninth distance is equal to the first distance, and the eleventh distance is equal to the seventh distance. Alternatively, in one embodiment, refer to... Figure 6 The ninth distance equals the third distance, and the eleventh distance equals the fifth distance. Alternatively, in one embodiment, refer to... Figure 7 The ninth distance is equal to the third distance, and the eleventh distance is equal to the seventh distance.

[0060] Understandably, in Figure 5 In the corresponding embodiment, the first three-way valve 210 is connected to the first end of the first connecting pipe 110, the second three-way valve 220 is connected to the second end of the second connecting pipe 120, the third three-way valve 230 is connected to the first end of the third connecting pipe 130, and the fourth three-way valve 240 is connected to the second end of the fourth connecting pipe 140. Figures 1-4In a corresponding embodiment, the first three-way valve 210 is connected to the first end of the first connecting pipe 110, the second three-way valve 220 is connected to the second end of the second connecting pipe 120, the third three-way valve 230 is connected to the first end of the fourth connecting pipe 140, and the fourth three-way valve 240 is connected to the second end of the third connecting pipe 130. Figure 6 In the corresponding embodiment, the first three-way valve 210 is connected to the first end of the second connecting pipe 120, the second three-way valve 220 is connected to the second end of the first connecting pipe 110, the third three-way valve 230 is connected to the first end of the third connecting pipe 130, and the fourth three-way valve 240 is connected to the second end of the fourth connecting pipe 140. Figure 7 In the corresponding embodiment, the first three-way valve 210 is connected to the first end of the second connecting pipe 120, the second three-way valve 220 is connected to the second end of the first connecting pipe 110, the third three-way valve 230 is connected to the first end of the fourth connecting pipe 140, and the fourth three-way valve 240 is connected to the second end of the third connecting pipe 130.

[0061] Figure 8 This invention provides a predictive water temperature control curve, specifically a water temperature control curve regulated using the temperature control device of the liquid-cooled fiber laser according to this invention. Figure 9 This is a predicted water flow rate curve provided by an embodiment of the present invention, specifically a predicted water flow rate curve regulated by the temperature control device of the liquid-cooled fiber laser of this embodiment of the present invention. (Reference) Figure 8 and Figure 9 The present invention can stably control and achieve various temperature regulation at a temperature higher than that of centralized cooling pipe water, without changing the water pressure and water flow.

[0062] In summary, this embodiment of the invention sets up a connecting component 100 to connect the inlet pipe 330 and the outlet pipe 340, and a reversing component 200 for changing the coolant flow direction is set at the connection points between the connecting component 100 and the inlet pipe 330 and between the connecting component 100 and the outlet pipe 340. A controller is used to control the state of the reversing component 200, thereby changing the coolant flow direction. This method has low cost and can achieve circulating water supply without disrupting the existing centralized refrigeration pipeline layout, enabling various temperature controls above the centralized refrigeration liquid temperature, while also avoiding changes to hydraulic pressure and liquid flow rate.

[0063] This utility model embodiment also provides a temperature control system for a liquid-cooled fiber laser, including the temperature control device for the liquid-cooled fiber laser and the liquid-cooled fiber laser 300 provided in any of the above embodiments.

[0064] Continue to refer to Figures 1 to 7The first end of the inlet pipe 330 and the first end of the outlet pipe 340 of the liquid-cooled fiber laser 300 are both connected to the centralized cooling pipe (not shown in the attached figure). The second end of the inlet pipe 330 is connected to the inlet 310 of the liquid-cooled fiber laser 300, and the second end of the outlet pipe 340 is connected to the outlet 320 of the liquid-cooled fiber laser 300.

[0065] Figure 10 This is a flowchart illustrating a temperature control method for a liquid-cooled fiber laser according to an embodiment of the present invention. The method utilizes the temperature control device for the liquid-cooled fiber laser provided in the above embodiment. The temperature control method for the liquid-cooled fiber laser includes:

[0066] S1010, Obtain the fluid parameters monitored by the fluid parameter monitoring element; the fluid parameters include the temperature and / or flow rate of the coolant.

[0067] S1020: Control the state of the reversing component according to the liquid circuit parameters and preset temperature value.

[0068] Specifically, after acquiring the liquid path parameters monitored by the liquid path parameter monitoring element, the controller changes the flow direction of the coolant by controlling the state of the reversing component based on the liquid path parameters and the preset temperature value. This allows the cryogenic liquid entering the liquid-cooled fiber laser from the inlet to be heated by the liquid-cooled fiber laser, mixed with newly injected cryogenic liquid, and then re-enter the liquid-cooled fiber laser from the inlet. After multiple mixing processes, the temperature of the liquid flowing through the liquid-cooled fiber laser reaches the preset temperature.

[0069] It is understandable that by acquiring the liquid circuit parameters monitored by the liquid circuit parameter monitoring element through the controller, analyzing and deciding on the timing and frequency of the switching component, it is possible to stably control and achieve various temperature regulation at temperatures higher than the centralized cooling pipeline water temperature, without changing the water pressure and water flow.

[0070] Figure 11 This is a flowchart of another temperature control method for a liquid-cooled fiber laser provided in an embodiment of this utility model, see reference. Figure 11 The method includes the following steps:

[0071] S1110. Obtain the fluid parameters monitored by the fluid parameter monitoring element; the fluid parameters include the temperature and / or flow rate of the coolant.

[0072] S1120. When the temperature of the coolant is determined to be higher than the first preset temperature value based on the fluid circuit parameters, the reversing assembly is controlled to be in the first state.

[0073] The first state is that the first end of the first three-way valve connected to the connecting component is closed, the first end of the second three-way valve connected to the connecting component is closed, the first end of the third three-way valve connected to the connecting component is closed, and the first end of the fourth three-way valve connected to the connecting component is closed.

[0074] For example, Figure 1 and Figure 4 The reversing component is in the first state, at which time the first end of the first three-way valve 210 connected to the connecting component 100 is closed, the first end of the second three-way valve 220 connected to the connecting component 100 is closed, the first end of the third three-way valve 230 connected to the connecting component 100 is closed, and the first end of the fourth three-way valve 240 connected to the connecting component 100 is closed.

[0075] It should be noted that the first preset temperature value can be freely set by the user. When the coolant temperature is determined to be higher than the first preset temperature value based on the fluid circuit parameters, continue to refer to the preset temperature value. Figure 1 The controller controls the commutation component to be in the first state. The constant temperature cryogenic liquid provided by the centralized cooling pipe flows directly from the inlet pipe into the inlet to dissipate heat from the liquid-cooled fiber laser, and then flows directly out from the outlet and the outlet pipe. At this time, the constant temperature cryogenic liquid provided by the centralized cooling pipe is used directly to dissipate heat from the liquid-cooled fiber laser.

[0076] Optionally, based on the above embodiments, step S1020 may include step S1120.

[0077] S1130. When the temperature of the coolant is determined to be lower than the second preset temperature value according to the fluid circuit parameters, the reversing component is repeatedly controlled to maintain the second state for a first preset time, and then the reversing component is controlled to maintain the first state for a second preset time until the temperature of the coolant reaches the third preset temperature value according to the fluid circuit parameters.

[0078] In the second state, the second end of the first three-way valve away from the inlet is closed, the second end of the second three-way valve away from the outlet is closed, the third end of the third three-way valve near the inlet is closed, and the third end of the fourth three-way valve near the outlet is closed; the first preset temperature value is greater than the second preset temperature value, the third preset temperature value is less than the first preset temperature value, and greater than the second preset temperature value.

[0079] For example, in Figure 2 and Figure 3 In this state, the second end of the first three-way valve 210, which is away from the inlet 310, is closed; the second end of the second three-way valve 220, which is away from the outlet 320, is closed; the third end of the third three-way valve 230, which is close to the inlet 310, is closed; and the third end of the fourth three-way valve 240, which is close to the outlet 320, is closed.

[0080] It should be noted that the second and third preset temperature values ​​can be freely set by the user, provided that the first preset temperature value is greater than the second preset temperature value, the third preset temperature value is less than the first preset temperature value, and greater than the second preset temperature value. The first and second preset times can be times selected in advance after multiple tests, or times calculated by the controller based on the coolant temperature and / or flow rate. When the state of the commutation component 200 is as follows... Figure 2 As shown, at this time, the low temperature liquid flows from the fourth connecting pipe 140 to the outlet pipe 340, continuously pushing the high temperature liquid in the outlet pipe 340 into the inlet 310. At the same time, the high temperature liquid heated inside the liquid-cooled fiber laser 300 is continuously pushed into the inlet pipe 330 through the outlet 320. Figure 3 for Figure 2 A completed state, Figure 4 This is a state after the commutation component 200 reverses again. At this point, the cryogenic liquid in the pipe pushes the high-temperature liquid in the inlet pipe 330 into the inlet 310, achieving secondary heating. Simultaneously, the high-temperature liquid, heated internally by the liquid-cooled fiber laser 300, is continuously pushed into the outlet pipe 340 through the outlet 320. The controller obtains the coolant temperature and / or flow rate, or through time feedback, and adjusts accordingly. Figure 2 , Figure 3 , Figure 4 The cyclical switching of states can maintain a slow and continuous increase in liquid temperature. If cooling is required, the system can switch to maintain the same state. Figure 1 The system can achieve various temperature controls above the centralized refrigeration pipeline water temperature by combining heating and cooling operations, without changing the water pressure and flow rate.

[0081] Optionally, based on the above embodiments, step S1020 may include step S1130.

[0082] The temperature control method for the liquid-cooled fiber laser provided in this embodiment of the present invention is implemented using the temperature control device for the liquid-cooled fiber laser provided in the above embodiment, and therefore has the same beneficial effects. For any content not described in detail in this embodiment of the present invention, please refer to the temperature control device for the liquid-cooled fiber laser provided in the above embodiment.

[0083] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A temperature control device for a liquid-cooled fiber laser, comprising: include: Controller, hydraulic parameter monitoring elements, communication components, and reversing components; The inlet and outlet of the liquid-cooled fiber laser are connected to the inlet and outlet pipes, respectively. Both the inlet and outlet are equipped with liquid path parameter monitoring elements for monitoring the temperature and / or flow rate of the coolant. The connecting component connects the inlet pipe and the outlet pipe. The reversing component for changing the coolant flow direction is located at the connection between the connecting component and the inlet pipe, and at the connection between the connecting component and the outlet pipe. The controller is electrically connected to the fluid circuit parameter monitoring element and the commutation assembly.

2. The temperature control apparatus for a liquid-cooled fiber laser of claim 1, wherein, The connecting components include a first connecting pipe, a second connecting pipe, a third connecting pipe, and a fourth connecting pipe; The first end of the first connecting pipe, the first end of the second connecting pipe, the first end of the third connecting pipe, and the first end of the fourth connecting pipe are all connected to the inlet pipe, and the second end of the first connecting pipe, the second end of the second connecting pipe, the second end of the third connecting pipe, and the second end of the fourth connecting pipe are all connected to the outlet pipe. The first distance between the first end of the first connecting pipe and the inlet is equal to the second distance between the second end of the second connecting pipe and the outlet. The third distance between the second end of the first connecting pipe and the outlet is equal to the fourth distance between the first end of the second connecting pipe and the inlet. The fifth distance between the first end of the third connecting pipe and the inlet is equal to the sixth distance between the second end of the fourth connecting pipe and the outlet. The seventh distance between the second end of the third connecting pipe and the outlet is equal to the eighth distance between the first end of the fourth connecting pipe and the inlet. Wherein, the first distance is less than the third distance, the third distance is less than the fifth distance, and the fifth distance is less than the seventh distance.

3. The temperature control apparatus for a liquid-cooled fiber laser of claim 2, wherein, The inlet pipe is equipped with a first water storage pipe, and the outlet pipe is equipped with a second water storage pipe; The first water storage pipe is located between the first end of the second connecting pipe and the first end of the third connecting pipe; The second water storage pipe is located between the second end of the first connecting pipe and the second end of the third connecting pipe.

4. The temperature control device for a liquid-cooled fiber laser according to claim 3, characterized in that, Both the first water storage pipe and the second water storage pipe include multiple curved shapes.

5. The temperature control apparatus for a liquid-cooled fiber laser of claim 2, wherein, The reversing assembly includes a first three-way valve, a second three-way valve, a third three-way valve, and a fourth three-way valve; Both the first three-way valve and the third three-way valve are located at the connection between the water inlet pipe and the connecting component; Both the second three-way valve and the fourth three-way valve are located at the connection between the water outlet pipe and the connecting component; The ninth distance between the first three-way valve and the water inlet is equal to the tenth distance between the second three-way valve and the water outlet; The eleventh distance between the third three-way valve and the inlet is equal to the twelfth distance between the fourth three-way valve and the outlet.

6. The temperature control apparatus for a liquid-cooled fiber laser of claim 5, wherein, The ninth distance is equal to the first distance, and the eleventh distance is equal to the fifth distance; Alternatively, the ninth distance is equal to the first distance, and the eleventh distance is equal to the seventh distance; Alternatively, the ninth distance is equal to the third distance, and the eleventh distance is equal to the fifth distance; Alternatively, the ninth distance is equal to the third distance, and the eleventh distance is equal to the seventh distance.

7. A temperature control system for a liquid-cooled fiber laser, comprising: Includes the temperature control device for the liquid-cooled fiber laser as described in any one of claims 1-6 and the liquid-cooled fiber laser; The first end of the inlet pipe and the first end of the outlet pipe of the liquid-cooled fiber laser are both connected to the centralized cooling pipe. The second end of the inlet pipe is connected to the inlet of the liquid-cooled fiber laser, and the second end of the outlet pipe is connected to the outlet of the liquid-cooled fiber laser.

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