Water cooling control system and temperature regulation method

Abstract

The application belongs to the technical field of laser cutting, and discloses a water cooling control system and a temperature regulation method. The water cooling control system comprises a cutting head control unit, a cutting head constant temperature unit, an environment data acquisition module, a temperature acquisition module, a cooling water circulation unit and a water cooling machine control unit. The water cooling control system provided by the application can monitor the working condition of the cutting head and the external environment in real time through the cutting head control unit, the environment data acquisition module and the temperature acquisition module, and then the water cooling machine control unit controls the cooling water circulation unit to adjust the cooling water temperature and flow rate correspondingly, so that the cutting head can be ensured to operate stably under various complex environments.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, and in particular to a water-cooling control system and temperature control method. Background Technology

[0002] Laser cutting machines are widely used in metal processing, aerospace, and automotive manufacturing. The cutting head is the core component of a laser cutting machine, and its performance directly affects cutting quality and efficiency. The cutting head generates a significant amount of heat during operation; if this heat is not dissipated effectively and promptly, the following problems may occur:

[0003] 1. Optical component failure: Excessive temperature can cause deformation or damage to optical lenses, mirrors and other components, affecting the quality of the laser beam.

[0004] 2. Damage to electrical components: Electronic components are sensitive to temperature, and overheating may lead to performance degradation or even burnout.

[0005] 3. Decreased cutting accuracy: Thermal expansion of the mechanical structure caused by temperature changes can affect the positioning accuracy of the cutting head.

[0006] 4. Shortened equipment lifespan: Long-term overheating operation accelerates equipment aging and increases maintenance costs.

[0007] Existing cooling methods for cutting heads mainly rely on a single water-cooling structure, which has the following problems:

[0008] 1. Inaccurate temperature control: The cooling water temperature is fixed and cannot be adjusted according to actual needs, resulting in temperature fluctuations in the cutting head.

[0009] 2. Slow response speed: It cannot quickly respond to changes in the external environment and the power of the cutting head, and the cooling efficiency is low.

[0010] 3. Lack of intelligent adjustment: It cannot dynamically adjust according to the working condition of the cutting head and the external environment, resulting in overcooling or overheating.

[0011] 4. Poor environmental adaptability: The temperature and humidity of the environment vary greatly in different regions, seasons and times, and the existing water-cooling structure is difficult to adapt to.

[0012] Therefore, there is an urgent need for a water-cooling control system that can monitor the working condition and external environment of the cutting head in real time and intelligently adjust the temperature and flow of cooling water to ensure that the cutting head operates stably in various complex environments. Summary of the Invention

[0013] The purpose of this invention is to provide a water-cooling control system and temperature control method, which monitors the working condition of the cutting head and the external environment in real time, and intelligently adjusts the temperature and flow rate of the cooling water to ensure that the cutting head operates stably in various complex environments.

[0014] To achieve this objective, the present invention adopts the following technical solution:

[0015] A water-cooling control system for cooling a cutting head, the water-cooling control system including a cutting head control unit, a cutting head constant temperature unit, an environmental data acquisition module, a temperature acquisition module, a cooling water circulation unit, and a water chiller control unit;

[0016] The cutting head control unit is electrically connected to the cutting head. The cutting head control unit is configured to control the operation of the cutting head and to collect the operating condition data of the cutting head.

[0017] The cutting head is mounted on the cutting head by a constant temperature unit. The outlet and inlet of the cooling water circulation unit are both connected to the cutting head by a constant temperature unit via pipes. The cooling water circulation unit supplies circulating cooling water to the cutting head by a constant temperature unit. The cutting head by a constant temperature unit exchanges heat with the cutting head through the cooling water supplied by the cooling water circulation unit to cool the cutting head.

[0018] The environmental data acquisition module is configured to collect external environmental data;

[0019] The temperature acquisition module is configured to acquire the temperature of the inlet and outlet of the constant temperature unit of the cutting head, and is also configured to acquire the temperature of the inlet and outlet of the cooling water circulation unit.

[0020] The cutting head control unit, the cooling water circulation unit, and the environmental data acquisition module are all electrically connected to the water chiller control unit. The water chiller control unit is configured to control the operation of the cooling water circulation unit so that it adjusts the flow rate and temperature of the supplied cooling water accordingly.

[0021] Preferably, the water cooling control system further includes a pressure sensor for monitoring the pressure within each pipe.

[0022] Preferably, the cutting head control unit includes a first processor, a first acquisition module, and a communication interface. The first processor is electrically connected to the first acquisition module. Both the first processor and the first acquisition module are disposed on the cutting head. The first processor communicates with the water chiller control unit through the communication interface.

[0023] Preferably, the cutting head is equipped with a temperature control unit including a cooling water channel and a heat exchanger, wherein the cooling water channel is disposed on the cutting head and the heat exchanger is attached to the cutting head and located in the middle of the cooling water channel.

[0024] Preferably, the cooling water circulation unit includes:

[0025] Water storage tank, used to store cooling water;

[0026] The cooling module is used to cool the cooling water.

[0027] The heating module is used to heat the cooling water;

[0028] A circulating water pump is used to draw cooling water from the water storage tank and transport the cooling water to the outside of the cooling water circulation unit.

[0029] A flow control valve is used to control the flow rate of cooling water supplied by the circulating water pump.

[0030] Preferably, the environmental data acquisition module includes at least one temperature and humidity sensor.

[0031] A temperature control method, which regulates the temperature of the cutting head through the aforementioned water-cooling control system, includes the following steps:

[0032] Initial detection: Collect external environmental data and the operating condition data of the cutting head, and collect the inlet and outlet temperatures of the constant temperature unit and the inlet and outlet temperatures of the cooling water circulation unit.

[0033] Temperature difference judgment and preheating: Compare the inlet temperature T_in of the constant temperature unit of the cutting head with the set temperature T_set. If T_in is lower than T_set and the difference is greater than the first threshold ΔT1, control the cooling water circulation unit to preheat the cooling water.

[0034] Start cooling: After the preheating state is completed or when preheating is not required, start the cooling water circulation unit to supply cooling water to the temperature control unit of the cutting head and exchange heat with the cutting head;

[0035] Continuous monitoring: Continuously collect and compare the deviation between T_in and T_set. If the deviation is greater than the second threshold ΔT2, or if a significant change in external environmental data is detected, proceed to the step "Dynamic Adjustment".

[0036] Dynamic adjustment: Based on the real-time deviation between T_in and T_set and the temperature change rate (dT_in / dt), the cooling water circulation unit is controlled to adjust the temperature or flow rate of the cooling water so that T_in gradually approaches T_set;

[0037] Stable operation: If |T_in-T_set| does not exceed the predetermined range (δ), the current adjustment state is maintained and continuous monitoring continues until the cutting operation is completed or the system is shut down.

[0038] Preferably, the step between "start cooling" and "continuous monitoring" also includes:

[0039] Real-time monitoring and prediction: Continuously collect and calculate the relationship between T_in and time to predict the time required to reach T_set.

[0040] Preferably, the step between "real-time detection and prediction" and "continuous monitoring" also includes:

[0041] Temperature compensation and adjustment: If there is still a deviation between T_in and T_set, the cooling water circulation unit is controlled to adjust the temperature or flow rate of the cooling water to stabilize T_in at T_set.

[0042] Preferably, the step "dynamic adjustment" further includes:

[0043] Anti-condensation control: Calculate or query the dew point temperature T_dew based on external environmental data, and when T_in is lower than the sum of T_dew and the safety margin ΔD, control the cooling water circulation unit to increase the cooling water temperature or reduce the flow rate accordingly to avoid condensation.

[0044] The beneficial effects of this invention are:

[0045] First, the cooling water circulation unit is controlled by the water chiller control unit to adjust the flow rate and temperature of the supplied cooling water accordingly, thereby reducing temperature fluctuations of the cutting head.

[0046] Secondly, before cooling, the water chiller control unit compares the inlet temperature of the cutting head by the constant temperature unit with the set temperature. If the inlet temperature of the cooling water circulation unit is lower than the set value, the water chiller control unit controls the cooling water circulation unit to work so that it preheats the cooling water, thereby enabling it to quickly respond to changes in ambient temperature and cutting head power, resulting in high cooling efficiency.

[0047] Furthermore, the environmental data acquisition module continuously monitors external environmental data, the cutting head control unit continuously monitors the operating condition data of the cutting head, and the temperature acquisition module continuously monitors the temperature of the inlet and outlet of the constant temperature unit and the temperature of the inlet and outlet of the cooling water circulation unit. If the temperature of the inlet of the constant temperature unit deviates from the set value, the water chiller control unit controls the cooling water circulation unit to adjust the temperature or flow rate of the cooling water accordingly. This allows for dynamic adjustment based on the operating condition of the cutting head and the external environment, thereby avoiding overcooling or overheating.

[0048] Finally, by continuously monitoring external environmental data through the environmental data acquisition module, the water chiller control unit can adjust the temperature and flow rate of the cooling water according to the environmental data, thereby improving the environmental adaptability of the water cooling control system. Attached Figure Description

[0049] Figure 1This is a schematic diagram of the water-cooling control system provided by the present invention;

[0050] Figure 2 This invention provides a dew point temperature meter. Detailed Implementation

[0051] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0052] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0053] In this application, the term "and / or" describes a relationship between related objects, indicating that three relationships can exist. For example, a centrifugal vortex magnetic pump and / or a centrifugal vortex magnetic pump can represent: the existence of only one centrifugal vortex magnetic pump, the simultaneous existence of one centrifugal vortex magnetic pump and a centrifugal vortex magnetic pump, or the existence of only one centrifugal vortex magnetic pump. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0054] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0055] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0056] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0057] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0058] Please see Figure 1 and Figure 2 This embodiment provides a water-cooling control system for cooling the cutting head. The water-cooling control system includes a cutting head control unit, a cutting head constant temperature unit, an environmental data acquisition module, a temperature acquisition module, a cooling water circulation unit, and a water chiller control unit.

[0059] The cutting head control unit is electrically connected to the cutting head and is configured to control the operation of the cutting head and collect its operating data. A temperature control unit is mounted on the cutting head. The outlet and inlet of the cooling water circulation unit are connected to the temperature control unit via pipes. The cooling water circulation unit supplies circulating cooling water to the temperature control unit, which exchanges heat with the cutting head through the cooling water supplied by the circulation unit to cool the cutting head. An environmental data acquisition module is configured to collect external environmental data. A temperature acquisition module is configured to collect the temperatures of the inlet and outlet of the temperature control unit and the cooling water circulation unit. The cutting head control unit, cooling water circulation unit, and environmental data acquisition module are all electrically connected to the water chiller control unit. The water chiller control unit is configured to control the operation of the cooling water circulation unit to adjust the flow rate and temperature of the supplied cooling water accordingly.

[0060] Correspondingly, this embodiment also provides a temperature control method, which regulates the temperature of the cutting head through the aforementioned water-cooling control system. The temperature control method includes the following steps:

[0061] Initial testing: Collect external environmental data and cutting head operating condition data, and collect the inlet and outlet temperatures of the constant temperature unit and the inlet and outlet temperatures of the cooling water circulation unit.

[0062] In the "Initial Detection" step, the chiller control unit first acquires the ambient temperature (Ten) and humidity (RHenv), and records them together with data such as the cutting head temperature (Thead) and power load (Plaser) fed back by the cutting head control unit. Simultaneously, the temperature acquisition module transmits the temperatures of the cutting head at the constant temperature unit inlet (T_in), outlet (T_out), and the cooling water circulation unit inlet and outlet to the chiller control unit. If T_in is detected to be significantly lower than the set temperature (T_set) and the difference exceeds the first threshold ΔT1, preheating is deemed necessary, and the chiller control unit accordingly activates the heating module to heat the cooling water.

[0063] Temperature difference judgment and preheating: Compare the inlet temperature T_in of the cutting head constant temperature unit with the set temperature T_set. If T_in is lower than T_set and the difference is greater than the first threshold ΔT1, control the cooling water circulation unit to preheat the cooling water.

[0064] Start cooling: After the preheating process is completed or when preheating is not required, start the cooling water circulation unit to supply cooling water to the temperature control unit of the cutting head and exchange heat with the cutting head.

[0065] When T_in is close to T_set or reaches the temperature difference bandwidth set by the water chiller control unit (e.g., |T_in-T_set|≤ε_1), preheating ends and the cooling water circulation unit begins normal circulation.

[0066] Continuous monitoring: Continuously collect and compare the deviation between T_in and T_set. If the deviation is greater than the second threshold ΔT2, or if a significant change in external environmental data is detected, proceed to the step "Dynamic Adjustment".

[0067] At this time, the water chiller control unit continues to collect T_in and compares it in each sampling cycle (e.g., once every second or every few seconds). Once the deviation of T_in-T_set is found to exceed another threshold ΔT2, it immediately enters the dynamic adjustment mode.

[0068] Dynamic adjustment: Based on the real-time deviation between T_in and T_set and the temperature change rate (dT_in / dt), the cooling water circulation unit is controlled to adjust the temperature or flow rate of the cooling water so that T_in gradually approaches T_set.

[0069] During dynamic adjustment, the water chiller control unit performs further calculations based on the difference between T_in and T_set, as well as the temperature change rate (dT_in / dt). For example, if T_in is significantly higher than T_set and is still rising, it indicates that the heat dissipated by the cutting head is continuously increasing. In this case, the cooling power of the cooling water circulation unit can be increased simultaneously, and the cooling water flow rate can be increased. If T_in is lower than T_set, the opposite operation is performed. In addition, to avoid temperature decay or sudden changes caused by long-distance pipelines, the system can predict based on the detected transmission delay and temporarily adjust the target temperature upward or downward as necessary for compensation.

[0070] It is worth noting that a cutting head inevitably includes multiple lenses forming optical elements and various electrical components. If a lot of condensation occurs on the surface of the optical or electrical components, it may affect the normal operation of the cutting head.

[0071] Correspondingly, to avoid the above situation, dynamic adjustment also includes control over condensation prevention.

[0072] Anti-condensation control: Calculate or query the dew point temperature T_dew based on external environmental data, and when T_in is lower than the sum of T_dew and the safety margin ΔD, control the cooling water circulation unit to increase the cooling water temperature or reduce the flow rate accordingly to avoid condensation.

[0073] Once the ambient temperature Ten and relative humidity RHen are detected, the dew point temperature Tdew is obtained by consulting the dew point temperature table. If T_in is lower than Tdew+ΔDT, indicating a potential risk of condensation, the water chiller control unit will proactively raise the cooling water temperature or reduce the water flow rate to ensure that T_in is always above the dew point temperature safety margin, thereby preventing condensation on the surfaces of optical lenses and electrical components.

[0074] It should be noted that, provided that the cutting head can operate stably, as long as |T_in-T_set| does not exceed a certain tolerance δ (e.g., 1℃) and no risk of condensation is detected, the water chiller control unit will maintain the current heating / cooling power and flow rate unchanged, so as to ensure that the system is relatively energy-efficient and reduce the impact of frequent start-stop on the equipment life.

[0075] Stable operation: If |T_in-T_set| does not exceed the predetermined range (δ), the current adjustment state is maintained and continuous monitoring continues until the cutting operation is completed or the system is shut down.

[0076] First, the cooling water circulation unit is controlled by the water chiller control unit to adjust the flow rate and temperature of the supplied cooling water accordingly, thereby reducing temperature fluctuations of the cutting head.

[0077] Secondly, before cooling, the water chiller control unit compares the inlet temperature of the cutting head by the constant temperature unit with the set temperature. If the inlet temperature of the cooling water circulation unit is lower than the set value, the water chiller control unit controls the cooling water circulation unit to work so that it preheats the cooling water, thereby enabling it to quickly respond to changes in ambient temperature and cutting head power, resulting in high cooling efficiency.

[0078] Furthermore, the environmental data acquisition module continuously monitors external environmental data, the cutting head control unit continuously monitors the operating condition data of the cutting head, and the temperature acquisition module continuously monitors the temperature of the inlet and outlet of the constant temperature unit and the temperature of the inlet and outlet of the cooling water circulation unit. If the temperature of the inlet of the constant temperature unit deviates from the set value, the water chiller control unit controls the cooling water circulation unit to adjust the temperature or flow rate of the cooling water accordingly. This allows for dynamic adjustment based on the operating condition of the cutting head and the external environment, thereby avoiding overcooling or overheating.

[0079] Finally, by continuously monitoring external environmental data through the environmental data acquisition module, the water chiller control unit can adjust the temperature and flow rate of the cooling water according to the environmental data, thereby improving the environmental adaptability of the water cooling control system.

[0080] Generally, the cooling water circulation unit and the water chiller control unit are integrated into the water chiller, while the cutting head, cutting head control unit, cutting head temperature control unit, and environmental data acquisition module are integrated into the laser cutting machine. As a result, the cooling water supplied from the cooling water circulation unit to the cutting head temperature control unit will pass through a long pipeline. As a result, the cooling water supplied from the cooling water circulation unit to the cutting head temperature control unit will cool down during the transportation process, and thus cannot ensure that the preheated cooling water temperature is stable at the set value when it is delivered to the cutting head temperature control unit.

[0081] Therefore, to ensure the preheating effect, the step between "Start Cooling" and "Continuous Monitoring" also includes:

[0082] Real-time monitoring and prediction: Continuously collect and calculate the relationship between T_in and time to predict the time required to reach T_set.

[0083] This setup allows for real-time detection of the impact of factors such as transport distance and external environment on cooling water temperature. It can then predict when the cooling water temperature deviates from the set value, either just before it occurs or just before it does. This predictive mechanism can react quickly when the cooling water temperature rises or falls too rapidly.

[0084] Correspondingly, since the current cooling water temperature still differs from the set value, it is necessary to adjust the temperature and flow rate of the cooling water supplied by the cooling water circulation system.

[0085] Therefore, the steps "real-time detection and prediction" and "continuous monitoring" also include:

[0086] Temperature compensation and adjustment: If there is still a deviation between T_in and T_set, control the cooling water circulation unit to adjust the temperature or flow rate of the cooling water to stabilize T_in at T_set.

[0087] Furthermore, this embodiment also provides an exemplary temperature control process, which includes seven steps from T0 to T7, where T0-T4 is the preheating process and T5-T7 is the normal operation process. Please refer to Table 1 for details. In the table, the inlet temperature is the inlet temperature of the cutting head by the constant temperature unit, the outlet temperature is the outlet temperature of the cutting head by the constant temperature unit, the inlet pressure is the pressure at the inlet of the cutting head by the constant temperature unit, and the relative time is the water supply duration of the cooling water circulation unit. The specific temperature control process is as follows:

[0088] T0: Detect the temperature of the cutting head at the inlet of the thermostatic unit (e.g., 10℃), the pipeline pressure (e.g., 9800pa), and the relative humidity of the cutting head (e.g., 50%), and record the data.

[0089] When the inlet temperature (e.g., 10℃) differs significantly from the set value (e.g., 26℃), the water chiller control unit controls the cooling water circulation unit to preheat the cooling water.

[0090] T1. The data is shown in the table below. At this time, the cooling water supplied by the cooling water circulation system is delivered to the inlet of the constant temperature unit of the cutting head in 44 seconds.

[0091] T2. The data is shown in the table below. At this time, the temperature and time relationship between the cooling water supplied by the cooling water circulation system and the cutting head during the process of being transported to the inlet of the constant temperature unit is about 0.1℃ / every 4 seconds. It is predicted that it will take about 610 seconds to reach 26℃.

[0092] T3. The data are shown in the table below. After 655 seconds, the inlet temperature of the cutting head from the thermostatic unit is 24.49℃.

[0093] T4. The data is shown in the table below. After 700 seconds, the inlet temperature is 24.4℃, which is 1.6℃ different from the system set temperature. At this time, temperature compensation is activated. The water chiller control unit sends the required temperature of 26 + 1.6 / (24.4 / 26) = 29.4℃ to the cooling water circulation unit so that it can adjust the cooling water temperature to 29.4℃.

[0094] T5. The data is shown in the table below. After 765 seconds, the outlet temperature reached the set value of 26.2℃. After stabilizing at the set value for 20 seconds, the cutting head control unit controlled the cutting head to start working.

[0095] T6. During operation, continuously monitor the temperature of the cutting head at the inlet and outlet of the constant temperature unit, and read the dew point table. If it matches the dew point table, the water chiller control unit will promptly control the cooling water circulation unit to adjust the temperature so that it deviates from the dew point table.

[0096] T7. During operation, continuously monitor the temperature of the cutting head at the inlet and outlet of the constant temperature unit. If the temperature deviates from ±1℃, the water chiller control unit will promptly control the cooling water circulation unit to adjust the cooling water temperature accordingly.

[0097]

[0098] Table 1 Data Change Table

[0099] Specifically, the water-cooling control system also includes pressure sensors to monitor the pressure within each pipe, ensuring water flow stability. It should be noted that the number and specific installation locations of the pressure sensors are designed based on the actual application scenario and are therefore not specifically limited. In particular, a pressure sensor needs to be installed at the inlet of the thermostatic unit to detect the cutting head.

[0100] Specifically, the cutting head control unit includes a first processor, a first acquisition module, and a communication interface. The first processor and the first acquisition module are electrically connected, and both are mounted on the cutting head. The first processor communicates with the water chiller control unit through the communication interface. In this embodiment, the first processor is preferably an embedded processor, which makes the structure of the cutting head more compact. Furthermore, the first acquisition module includes detection components such as water temperature and pressure sensors and humidity sensors to detect parameters such as temperature, pressure, and humidity of the cutting head. The specific structure of the first acquisition module is not specifically required or limited. It should be noted that the working principles of the first processor, the second acquisition module, and the communication interface are all existing technologies. This embodiment does not make any improvements to the first processor, the second acquisition module, and the communication interface themselves, so they will not be described in detail. It should also be noted that the structure of the water chiller control unit is similar to that of the cutting head control unit, and will not be described in detail here.

[0101] The cutting head is housed in a temperature-controlled unit comprising cooling water channels and a heat exchanger. The cooling water channels are positioned on the cutting head, and the heat exchanger is attached to the cutting head and located in the center of the cooling water channels. It is understood that attaching the heat exchanger to the cutting head allows for better heat exchange between the cooling water flowing through the heat exchanger and the cutting head, thus enabling more effective cooling of the cutting head. It should be noted that the arrangement of the cooling water channels is determined based on the specific application scenario and is not subject to specific limitations.

[0102] Preferably, the cooling water circulation unit includes a water storage tank, a refrigeration module, a heating module, and a circulating water pump. The water storage tank stores cooling water. The refrigeration module cools the cooling water. The heating module heats the cooling water. The circulating water pump draws cooling water from the water storage tank and delivers it to the outside of the cooling water circulation unit. A flow control valve controls the flow rate of the cooling water supplied by the circulating water pump. It should be noted that the working principles of the refrigeration module, heating module, and circulating water pump are existing technologies and will not be described in detail.

[0103] During operation, the circulating water pump starts working, drawing cooling water from the storage tank and delivering it through pipes to the temperature control unit at the cutting head. During this process, the cooling water absorbs heat from the cutting head, and after its temperature rises, it flows back to the storage tank through pipes. Subsequently, the cooling module dissipates heat from the cooling water, thus creating a continuous cycle to supply circulating cooling water. The heating module can be activated by the water chiller control unit according to the actual usage scenario to heat the cooling water. Furthermore, the flow control valve can control the flow rate of the cooling water supplied by the circulating water pump according to the actual usage scenario.

[0104] The environmental data acquisition module includes at least one temperature and humidity sensor (not shown in the figure). Considering the actual application scenario, the temperature and humidity sensor is preferably mounted on the outer casing of the laser cutting machine, away from the cutting head, to ensure the accuracy of the detection data. It should be noted that the specific model of the temperature and humidity sensor is selected based on the actual application scenario, and there are no specific restrictions.

[0105] In this embodiment, the temperature acquisition module includes multiple water temperature sensors. Specifically, the cutting head is equipped with a water temperature sensor at both the inlet and outlet of the constant temperature unit, and the cooling water circulation unit is also equipped with a water temperature sensor at both the inlet and outlet (not shown in the figure). Furthermore, key components of the cutting head may also be equipped with water temperature sensors, such as optical and electrical components, which will not be detailed further.

[0106] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A temperature control method implemented through a water-cooling control system, the water-cooling control system being used to cool a cutting head, the water-cooling control system comprising a cutting head control unit, a cutting head constant temperature unit, an environmental data acquisition module, a temperature acquisition module, a cooling water circulation unit, and a water chiller control unit; The cutting head control unit is electrically connected to the cutting head. The cutting head control unit is configured to control the operation of the cutting head and to collect the operating condition data of the cutting head. The cutting head is mounted on the cutting head by a constant temperature unit. The outlet and inlet of the cooling water circulation unit are both connected to the cutting head by a constant temperature unit via pipes. The cooling water circulation unit supplies circulating cooling water to the cutting head by a constant temperature unit. The cutting head by a constant temperature unit exchanges heat with the cutting head through the cooling water supplied by the cooling water circulation unit to cool the cutting head. The environmental data acquisition module is configured to collect external environmental data; The temperature acquisition module is configured to acquire the temperature of the inlet and outlet of the constant temperature unit of the cutting head, and is also configured to acquire the temperature of the inlet and outlet of the cooling water circulation unit. The cutting head control unit, the cooling water circulation unit, and the environmental data acquisition module are all electrically connected to the water chiller control unit. The water chiller control unit is configured to control the operation of the cooling water circulation unit so that it adjusts the flow rate and temperature of the supplied cooling water accordingly. Its features are, The temperature control method includes the following steps: Initial detection: Collect external environmental data and the operating condition data of the cutting head, and collect the inlet and outlet temperatures of the constant temperature unit and the inlet and outlet temperatures of the cooling water circulation unit. Temperature difference judgment and preheating: Compare the inlet temperature T_in of the constant temperature unit of the cutting head with the set temperature T_set. If T_in is lower than T_set and the difference is greater than the first threshold ΔT1, control the cooling water circulation unit to preheat the cooling water. Start cooling: After the preheating state is completed or when preheating is not required, start the cooling water circulation unit to supply cooling water to the temperature control unit of the cutting head and exchange heat with the cutting head; Continuous monitoring: Continuously collect and compare the deviation between T_in and T_set. If the deviation is greater than the second threshold ΔT2, or if a significant change in external environmental data is detected, proceed to step "Dynamic Adjustment". Dynamic adjustment: Based on the real-time deviation between T_in and T_set and the temperature change rate (dT_in / dt), the cooling water circulation unit is controlled to adjust the temperature or flow rate of the cooling water so that T_in gradually approaches T_set; Stable operation: If |T_in-T_set| does not exceed the predetermined range (δ), the current adjustment state is maintained and continuous monitoring continues until the cutting operation is completed or the system is shut down.

2. The temperature control method according to claim 1, characterized in that, The water-cooling control system also includes a pressure sensor, which is used to measure the pressure in each pipe.

3. The temperature control method according to claim 1, characterized in that, The cutting head control unit includes a first processor, a first acquisition module, and a communication interface. The first processor is electrically connected to the first acquisition module. Both the first processor and the first acquisition module are disposed on the cutting head. The first processor communicates with the water chiller control unit through the communication interface.

4. The temperature control method according to claim 1, characterized in that, The cutting head is equipped with a constant temperature unit including a cooling water channel and a heat exchanger. The cooling water channel is disposed on the cutting head, and the heat exchanger is attached to the cutting head and located in the middle of the cooling water channel.

5. The temperature control method according to claim 1, characterized in that, The cooling water circulation unit includes: Water storage tank, used to store cooling water; The cooling module is used to cool the cooling water. The heating module is used to heat the cooling water; A circulating water pump is used to draw cooling water from the water storage tank and transport the cooling water to the outside of the cooling water circulation unit. A flow control valve is used to control the flow rate of cooling water supplied by the circulating water pump.

6. The temperature control method according to claim 1, characterized in that, The environmental data acquisition module includes at least one temperature and humidity sensor.

7. The temperature control method according to claim 1, characterized in that, Between the steps "Start Cooling" and "Continuous Monitoring" is also: Real-time monitoring and prediction: Continuously collect and calculate the relationship between T_in and time to predict the time required to reach T_set.

8. The temperature control method according to claim 7, characterized in that, The steps "Real-time Detection and Prediction" and "Continuous Monitoring" also include: Temperature compensation and adjustment: If there is still a deviation between T_in and T_set, the cooling water circulation unit is controlled to adjust the temperature or flow rate of the cooling water to stabilize T_in at T_set.

9. The temperature control method according to claim 1, characterized in that, The "dynamic adjustment" step also includes: Anti-condensation control: Calculate or query the dew point temperature T_dew based on external environmental data, and when T_in is lower than the sum of T_dew and the safety margin ΔD, control the cooling water circulation unit to increase the cooling water temperature or reduce the flow rate accordingly to avoid condensation.

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