Laser protective mask and heat dissipation control method thereof

Abstract

The invention relates to the technical field of welding protectors, and discloses a laser protective mask and a heat dissipation control method thereof.The method comprises the steps that first temperature data of a lens of the laser protective mask are collected to obtain the lens temperature, second temperature data of laser equipment are collected to obtain the laser equipment temperature, and a thermal difference value is determined according to the lens temperature and the laser equipment temperature; when the thermal difference value is greater than or equal to 400 DEG C, obtaining thermal energy conversion efficiency according to the thermal difference value, judging whether to start thermal energy conversion according to the thermal energy conversion efficiency, judging whether to start a cooling exhaust fan of the laser protective mask according to the thermal energy conversion efficiency when judging to start thermal energy conversion, and judging whether to start a cooling exhaust fan of the laser protective mask according to the thermal energy conversion efficiency when starting the cooling exhaust fan according to the thermal energy conversion efficiency; when the heat difference value is smaller than 400 DEG C, whether the cooling exhaust fan is started or not is judged according to the temperature of the lens, and when it is judged that the cooling exhaust fan is started according to the temperature of the lens, the external power supply is selected to provide the cooling exhaust fan with the electric power.

Description

Technical Field

[0001] The present invention relates to the technical field of welding protective gear, and in particular to a laser protective mask and a heat dissipation control method thereof. Background Art

[0002] During electric welding operations, the laser equipment on site will generate strong lasers and heat, and construction workers will use laser protective masks to prevent high-intensity laser beams from causing damage to the eyes and facial skin. When the laser generated during welding irradiates the lens of the protective mask, the lens will absorb a large amount of heat energy, causing the temperature of the mirror surface to rise sharply, which will not only cause the lens material to deform or break, but also affect the light transmittance of the lens, reduce the clarity of the personnel's field of vision, and seriously affect the safety of the personnel. In addition, the lens lacks effective heat dissipation when heat energy accumulates, and the accumulated heat cannot be released in time, and the accumulated heat cannot be effectively utilized, resulting in heat energy concentrated inside the protective mask, increasing the burden on personnel, affecting comfort and use time. Therefore, how to provide a laser protective mask and its heat dissipation control method is a technical problem that technicians in this field urgently need to solve. Summary of the invention

[0003] In view of this, the present invention proposes a laser protection mask and a heat dissipation control method thereof, aiming to solve the problem that the lenses of the current laser protection mask lack effective heat dissipation when heat energy accumulates, and cannot release the accumulated heat in time.

[0004] In one aspect, the present invention provides a method for controlling heat dissipation of a laser protective mask, comprising: Collecting first temperature data of the laser protective mask lens to obtain the lens temperature, and collecting second temperature data of the laser device to obtain the laser device temperature; Determining a thermal difference value based on the lens temperature and the laser device temperature; When the heat difference is greater than or equal to 400° C., a heat energy conversion efficiency is calculated according to the heat difference, and whether to start the heat energy conversion is determined according to the heat energy conversion efficiency; When it is determined to turn on the heat energy conversion, judging whether to turn on the cooling exhaust fan of the laser protective mask according to the heat energy conversion efficiency; When the cooling exhaust fan is turned on according to the heat energy conversion efficiency, a built-in power supply is selected to provide power to the cooling exhaust fan; When it is determined that the heat energy conversion is not to be turned on, the cooling exhaust fan is not turned on; When the thermal difference is less than 400° C., judging whether to turn on the cooling fan according to the lens temperature; When the cooling fan is turned on according to the lens temperature, an external power supply is selected to provide power to the cooling fan.

[0005] Further, the first temperature data and the second temperature data include: The first temperature data includes: ambient temperature, input heat, lens thermal conductivity, lens surface area, lens mass and lens specific heat capacity; The second temperature data includes: the ambient temperature, released heat, heat transfer area of ​​the laser device, laser device mass, laser device output power and resistance of the laser device.

[0006] Furthermore, the lens temperature is obtained by the following formula: ; in, represents the lens temperature, represents the ambient temperature, represents the input heat, k represents the thermal conductivity of the lens, represents the surface area of ​​the lens, m represents the mass of the lens, and c represents the specific heat capacity of the lens.

[0007] Furthermore, the temperature of the laser device is obtained by the following formula: ; in, represents the laser device temperature, represents the ambient temperature, Q represents the released heat, represents the heat transfer area of ​​the laser device, represents the mass of the laser device, P represents the output power of the laser device, and R represents the resistance of the laser device.

[0008] Further, judging whether to start thermal energy conversion according to the thermal energy conversion efficiency includes: When the heat energy conversion efficiency is greater than or equal to 10%, it is determined that the heat energy conversion is turned on; When the thermal energy conversion efficiency is less than 10%, it is determined that the thermal energy conversion is not turned on.

[0009] Further, judging whether to turn on the cooling exhaust fan of the laser protective mask according to the heat energy conversion efficiency includes: When the heat energy conversion efficiency is greater than or equal to 10% and less than or equal to 80%, the cooling exhaust fan is turned on; When the heat energy conversion efficiency is greater than 80% and less than 100%, it is selected not to turn on the cooling exhaust fan.

[0010] Further, judging whether to turn on the cooling fan according to the lens temperature includes: when When the temperature is greater than or equal to 600°C and less than 700°C, the cooling exhaust fan is not turned on; when When the temperature is greater than or equal to 700° C. and less than or equal to 1000° C., the cooling exhaust fan is selected to be turned on.

[0011] Further, starting the cooling exhaust fan includes: The cooling exhaust fan intelligently adjusts the fan power of the cooling exhaust fan according to the ambient temperature; When the ambient temperature is higher than 30°C, the cooling fan starts a high-power operation mode; When the ambient temperature is lower than 15° C., the cooling exhaust fan starts the intermittent operation mode.

[0012] Furthermore, the laser protection mask heat dissipation control method further includes: When the ambient temperature is higher than or equal to 40° C., the high power operation mode adjusts the fan power to greater than 90%; When the ambient temperature is higher than 30° C. and lower than 40° C., the high-power operation mode adjusts the fan power to be greater than or equal to 50% and less than 90%; When the ambient temperature is lower than 15° C., the intermittent operation mode adjusts the fan power to be greater than 30% and less than 50%.

[0013] Compared with the prior art, the beneficial effect of the present invention is that: by analyzing the lens temperature and the laser device temperature, the thermal difference between the two is calculated in real time, ensuring that when the temperature is too high, the cooling measures can be started in time to prevent the lens from being locally overheated, and the service life and safety of the laser protective mask lens are improved. At the same time, calculating the thermal energy conversion efficiency can intelligently manage the utilization of thermal energy, converting excess thermal energy into usable electrical energy, and effectively reducing the waste of energy. When the thermal difference is less than 400°C, it is determined whether the cooling exhaust fan needs to be started based on the lens temperature alone. In low temperature conditions, the opening of the exhaust fan can also be reasonably managed to avoid unnecessary energy consumption, while assisting the lens in heat dissipation. The energy efficiency is further improved. The power supply mode of the exhaust fan also varies according to the specific situation. When the thermal energy conversion is enabled, the cooling exhaust fan is powered by the built-in power supply, and when the exhaust fan is enabled based on the lens temperature alone, it is powered by an external power supply. This separate power supply mode is flexible and efficient, ensuring the stable operation of the cooling exhaust fan under different conditions.

[0014] On the other hand, the present application also provides a laser protective mask for applying the above-mentioned laser protective mask heat dissipation control method, comprising: Mask body, lens port, lens, cooling exhaust fan, collection unit, thermoelectric conversion unit, built-in power supply unit and external power supply unit; The lens opening is provided in the middle of the mask body, the lens is embedded in the lens opening, the cooling exhaust fan is fixedly connected to the mask body, and the cooling exhaust fan is located above the lens opening; The collection unit is fixedly connected to the mask body, the thermoelectric conversion unit is fixedly connected to the mask body, the collection unit is located on the left side of the lens opening, and the thermoelectric conversion unit is located on the right side of the lens opening; The built-in power supply unit is fixedly connected to the mask body, the external power supply unit is fixedly connected to the mask body, the built-in power supply unit is located below the thermoelectric conversion unit, and the external power supply unit is located below the built-in power supply unit.

[0015] It is understandable that the above-mentioned laser protective mask and heat dissipation control method thereof have the same beneficial effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 A flow chart of a method for controlling heat dissipation of a laser protective mask provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a laser protection mask provided in an embodiment of the present invention.

[0017] In the figure: 1. Mask body; 2. Cooling exhaust fan; 3. Collection unit; 4. Built-in power supply unit; 5. External power supply unit; 6. Lens port; 7. Lens. DETAILED DESCRIPTION

[0018] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] In some embodiments of the present application, see Figure 1 As shown, a method for controlling heat dissipation of a laser protective mask comprises: S100: collecting first temperature data of a laser protective mask lens to obtain a lens temperature, and collecting second temperature data of a laser device to obtain a laser device temperature; S200: determining a thermal difference value according to the lens temperature and the laser device temperature; S300: when the thermal difference is greater than or equal to 400° C., a thermal energy conversion efficiency is calculated according to the thermal difference, and whether to start thermal energy conversion is determined according to the thermal energy conversion efficiency; S400: when it is determined that heat energy conversion is turned on, determining whether to turn on the cooling exhaust fan of the laser protective mask according to the heat energy conversion efficiency; When the cooling fan is turned on according to the heat energy conversion efficiency, the built-in power supply is selected to provide power for the cooling fan; When it is determined that the heat energy conversion is not to be turned on, the cooling exhaust fan is not turned on; S500: When the thermal difference is less than 400°C, determine whether to turn on the cooling fan according to the lens temperature; When the cooling fan is turned on according to the lens temperature, an external power supply is selected to provide power for the cooling fan.

[0020] Specifically, during electric welding operations, the lens temperature directly reflects the heat load of the laser protective mask, while the laser equipment temperature reflects the heating state of the entire equipment. In the laser protective mask, the lens will be exposed to the radiation of the high-energy laser beam, so its surface temperature will rise sharply. By collecting the first temperature data of the lens through the temperature sensor, the temperature change of the lens can be monitored in real time to ensure the accuracy and real-time nature of the first temperature data. The second temperature data of the laser equipment is collected using a multi-point monitoring system. The sensors of the multi-point monitoring system are distributed in different parts of the laser equipment, including its laser source, optical elements, and near the cooling system, to ensure the comprehensiveness and accuracy of the second temperature data. After obtaining the lens temperature and the laser equipment temperature through the first temperature data and the second temperature data, the thermal difference is calculated based on these two data. The thermal difference represents the temperature difference between the lens and the laser equipment. The lens of the laser protective mask is coated with a layer of piezoelectric material. The piezoelectric material will convert the heat energy accumulated in the lens into electrical energy according to the temperature difference between the lens and the laser device. When the thermal difference is large, the temperature difference between the laser device temperature and the lens temperature is large. At this time, it may be necessary to start the thermal energy conversion function. When the thermal difference is small, it indicates that the lens temperature and the laser device temperature are relatively balanced. At this time, it is necessary to judge whether to turn on the cooling exhaust fan based on the lens temperature to prevent the lens from overheating. When the thermal difference is large, the efficiency of the converted thermal energy will be improved. Thermal energy conversion not only reduces the problem of lens overheating, but also stores the generated electrical energy into the built-in power supply to provide electrical energy support for the cooling exhaust fan. When the cooling exhaust fan is turned on, the cooling exhaust fan dissipates excess heat from the lens to the external environment, thereby reducing the lens temperature.

[0021] It is understandable that if the thermal difference is less than 400°C, the lens temperature and the laser device temperature are relatively balanced and do not meet the requirements of thermal energy conversion. At this time, the lens temperature is used to determine whether the cooling fan needs to be turned on. If the lens temperature is too high, it will affect its protection performance. In this case, if it is decided to turn on the cooling fan, an external power supply will be used to power the cooling fan.

[0022] In some embodiments of the present application, the first temperature data and the second temperature data include: the first temperature data include: ambient temperature, input heat, lens thermal conductivity, lens surface area, lens mass and lens specific heat capacity, and the second temperature data include: ambient temperature, released heat, laser device heat transfer area, laser device mass, laser device output power and laser device resistance.

[0023] Specifically, the ambient temperature will indirectly affect the lens temperature and the laser equipment temperature, so it is necessary to accurately monitor the ambient temperature to ensure the rigor of the data obtained. Input heat refers to the heat absorbed by the lens from the environment during operation. When the laser equipment is irradiated, a certain amount of heat input will be generated on the lens. The size of the heat input directly affects the temperature rise of the lens. Therefore, heat input is also an important factor affecting the temperature of the lens. The thermal conductivity of the lens reflects the ability of the lens material to conduct heat. The thermal conductivity of different lens materials is also different. The surface area of ​​the lens is the contact area between the lens and the external environment. The mass of the lens will affect its heat capacity, that is, the ability of the lens to store heat. The specific heat capacity of the lens indicates the difficulty of the temperature rise of the lens when absorbing heat. Materials with large specific heat capacity will rise slowly when absorbing the same amount of heat.

[0024] It is understandable that the second temperature data is mainly related to the laser device itself. The released heat is the heat discharged by the laser device to the external environment through its own heat dissipation. The heat transfer area of ​​the laser device is the contact area between the laser device and the external environment. The quality of the laser device will also affect its heat capacity. The output power of the laser device will affect the heat generation of the laser device. The resistance of the laser device is another important parameter that determines the heat generation of the device. In the actual process of controlling heat dissipation, the first temperature data and the second temperature data work together to determine the heat dissipation management effect of the laser protective mask lens. By monitoring these two sets of data, the heat dissipation is dynamically optimized to ensure that the lens is always within a controllable temperature range.

[0025] In some embodiments of the present application, the lens temperature is obtained by the following formula: ; in, Indicates the lens temperature, Indicates the ambient temperature, represents the input heat, k represents the thermal conductivity of the lens, represents the surface area of ​​the lens, m represents the mass of the lens, and c represents the specific heat capacity of the lens.

[0026] It can be understood that the ambient temperature, as the base temperature, indirectly affects the lens temperature. Secondly, the input heat will affect the lens temperature through the thermal conductivity of the lens and the surface area of ​​the lens. The actual temperature of the lens can be accurately calculated by measuring these parameters.

[0027] In some embodiments of the present application, the laser device temperature is obtained by the following formula: ; in, Indicates the laser device temperature, represents the ambient temperature, Q represents the released heat, Indicates the heat transfer area of ​​the laser equipment, It indicates the quality of the laser equipment, P indicates the output power of the laser equipment, and R indicates the resistance of the laser equipment.

[0028] It can be understood that the ambient temperature reflects the heat dissipation conditions around the laser device. The released heat is transferred through the heat transfer area of ​​the laser device. The output power and resistance of the laser device jointly affect the heat generation of the laser device. The temperature of the laser device can be accurately calculated by measuring these parameters.

[0029] In some embodiments of the present application, judging whether to turn on thermal energy conversion based on the thermal energy conversion efficiency includes: when the thermal energy conversion efficiency is greater than or equal to 10%, judging that the thermal energy conversion is turned on; when the thermal energy conversion efficiency is less than 10%, judging that the thermal energy conversion is not turned on.

[0030] Specifically, firstly, the thermal energy conversion efficiency is obtained based on the thermal difference value, and then the thermal energy conversion efficiency is used to determine whether to start the thermal energy conversion. The heat energy conversion efficiency is given by the formula: ,in, represents the thermal energy conversion efficiency, represents the heat difference, Indicates the lens temperature, Indicates the temperature of the laser device. The thermal difference reflects the temperature difference between the laser device and the lens. A larger thermal difference means that the heat generated by the laser device is significantly higher than the heat dissipation capacity of the lens. At this time, the piezoelectric material of the lens starts to work. The larger the thermal difference, the greater the difference between the temperature of the laser device and the temperature of the lens. The piezoelectric material converts the thermal energy of the lens into electrical energy with higher thermal energy conversion efficiency. The improvement of thermal energy conversion efficiency can not only improve the heat dissipation effect of the lens, but also extend the service life of the lens.

[0031] It can be understood that when the thermal difference is greater than or equal to 400°C, the thermal energy conversion will be turned on or off according to the thermal energy conversion efficiency. When it is greater than or equal to 10%, it indicates that the temperature difference between the laser device and the lens has reached a certain level. The heat generated by the laser device is large enough to affect the lens temperature. At this time, it is necessary to start the thermal energy conversion to effectively reduce the lens temperature. The start of thermal energy conversion will prompt the lens to dissipate more heat to prevent the lens from overheating and affecting performance or causing failure. On the other hand, when the thermal energy conversion efficiency is When it is less than 10%, it indicates that the thermal difference between the laser device and the lens is small, and the lens temperature has not yet reached the standard for activating thermal energy conversion. At this time, the lens can rely on its own heat dissipation to maintain a stable temperature, and there is no need to turn on the cooling exhaust fan for heat dissipation management, avoiding unnecessary thermal energy conversion operations, reducing energy consumption, and extending the service life of the lens. Judging whether to turn on thermal energy conversion based on thermal energy conversion efficiency provides flexibility for thermal energy management. It not only ensures the safety of the lens in a high-temperature working environment, but also effectively utilizes thermal energy. It not only improves the temperature control management accuracy of the lens, but also optimizes the utilization efficiency of thermal energy, thereby improving the heat dissipation level of the lens.

[0032] In some embodiments of the present application, judging whether to turn on the cooling exhaust fan of the laser protective mask according to the heat energy conversion efficiency includes: when the heat energy conversion efficiency is When the heat conversion efficiency is greater than or equal to 10% and less than or equal to 80%, turn on the cooling fan. When it is greater than 80% and less than 100%, choose not to turn on the cooling fan.

[0033] Specifically, in order to effectively control the heat dissipation process of the laser protective mask, it is necessary to set reasonable cooling fan on / off conditions for different heat energy conversion efficiencies. It is necessary to dissipate heat in time when the heat energy conversion efficiency is high, and avoid turning on the cooling fan when it is not necessary, so as to save energy and extend the service life of the fan. is 5000℃, assuming 1000℃ is the highest temperature that the lens can withstand. is 1000℃, and it is calculated that is 80%, the cooling fan needs to be turned on to reduce the lens temperature. Let's assume a scenario again. is 5000℃, assuming is 500℃, is 4500℃, and it is calculated that When the heat conversion efficiency is improved, it means To compare The value of the increase is large, indicating that the temperature difference between the lens and the laser device is large. This situation will be extreme. Temperature is much higher than However, at this time If the heat dissipation conditions are not met, there is no need to turn on the cooling exhaust fan. The lens of the protective mask relies on natural heat dissipation and the thermal conductivity of the material to slowly diffuse the heat to the external environment to keep the lens temperature relatively stable. When the threshold that the lens can withstand is reached, it is necessary to choose to turn on the cooling exhaust fan to assist in heat dissipation. When you choose to turn on the cooling exhaust fan, use the built-in power supply to power the cooling exhaust fan.

[0034] It is understandable that when you choose to turn on the cooling exhaust fan, the piezoelectric material of the lens converts the thermal energy of the lens into electrical energy and transmits it to the built-in power supply. The built-in power supply is the power source of the cooling exhaust fan, reducing the dependence on external electricity. By reasonably setting the range of thermal energy conversion efficiency and choosing to turn on or off the cooling exhaust fan at the right time, not only can the heat be effectively dissipated, but also energy consumption can be reduced and the service life of the laser protective mask lens can be extended.

[0035] In some embodiments of the present application, determining whether to turn on the cooling exhaust fan based on the lens temperature includes: when the temperature is greater than or equal to 600°C and less than 700°C, choosing not to turn on the cooling exhaust fan; when the temperature is greater than or equal to 700°C and less than or equal to 1000°C, choosing to turn on the cooling exhaust fan.

[0036] It is understandable that when judging whether to turn on the cooling exhaust fan based on the lens temperature, the thermal difference at this time is less than 400°C, the heat energy conversion efficiency is low, and the built-in power supply cannot meet the requirements for turning on the cooling exhaust fan. It is necessary to determine whether to turn on the cooling exhaust fan based on the lens temperature. When the lens temperature is between 600°C and 700°C, although the lens temperature is high at this time, it has not reached the critical point where forced cooling is required. Therefore, the lens can continue to work normally within this temperature range, and the cooling exhaust fan does not need to intervene. However, when the lens temperature rises further and reaches the range of 700°C to 1000°C, the cooling exhaust fan needs to be started to effectively reduce the temperature of the lens under high temperature conditions to avoid performance degradation or potential damage to the lens caused by excessive temperature. In this temperature range, the opening of the cooling exhaust fan can assist the lens in dissipating heat and prevent the temperature from rising further. By monitoring the lens temperature, the working state of the cooling fan can be flexibly adjusted according to the real-time temperature conditions, which not only avoids unnecessary energy consumption, but also effectively dissipates heat when necessary to ensure the safe use of the lens.

[0037] In some embodiments of the present application, turning on the cooling exhaust fan includes: the cooling exhaust fan intelligently adjusts the fan power of the cooling exhaust fan according to the ambient temperature. When the ambient temperature is higher than 30°C, the cooling exhaust fan starts a high-power operation mode. When the ambient temperature is lower than 15°C, the cooling exhaust fan starts an intermittent operation mode.

[0038] It is understandable that by real-time monitoring of the ambient temperature and dynamically adjusting the operating power of the fan, it is possible to ensure that the lens is provided with a suitable cooling effect. When the ambient temperature exceeds 30°C, the high-power operation mode will be activated, and the cooling exhaust fan will operate at maximum power, thereby enhancing the heat dissipation effect, quickly discharging the hot air in the laser protective mask, and preventing the heat accumulation during welding from affecting the lens. In a high temperature environment, the high-speed operation of the fan ensures the air circulation in the laser protective mask, so that the lens remains relatively stable under extreme temperature conditions. On the contrary, when the ambient temperature is lower than 15°C, the intermittent operation mode will be activated. At this time, the fan will not continue to run at a high speed, but will work intermittently to reduce the cooling intensity. Prevent excessive cooling in a low temperature environment from causing water mist on the lens. In different temperature ranges, the cooling exhaust fan can flexibly switch the operation mode, which not only ensures the heat dissipation effect at high temperatures, but also ensures moderate air flow at low temperatures.

[0039] In some embodiments of the present application, the laser protection mask heat dissipation control method also includes: when the ambient temperature is higher than or equal to 40°C, the high-power operation mode adjusts the fan power to greater than 90%; when the ambient temperature is higher than 30°C and lower than 40°C, the high-power operation mode adjusts the fan power to greater than or equal to 50% and less than 90%; when the ambient temperature is lower than 15°C, the intermittent operation mode adjusts the fan power to greater than 30% and less than 50%.

[0040] It is understandable that when the external ambient temperature is higher than or equal to 40°C, the fan will run at close to maximum power to cope with extreme high temperature environments and effectively dissipate heat from the lenses. When the ambient temperature is between 30°C and 40°C, the system is still in high-power operation mode, but the fan power will be adjusted to maintain between 50% and 90%. Although the ambient temperature at this time is high, it has not reached an extreme state. The fan power is controlled within a moderate range, which can provide sufficient heat dissipation without causing excessive energy consumption. When the ambient temperature is below 15°C, the cooling exhaust fan will enter intermittent operation mode, and the fan power will be adjusted to between 30% and 50%. Intermittent operation can not only maintain a certain amount of air circulation to assist the heat dissipation of the lenses, but also prevent discomfort caused by the accumulation of moisture inside the mask.

[0041] In summary, the beneficial effects of the present invention are: by analyzing the lens temperature and the laser device temperature, the thermal difference between the two is calculated in real time, ensuring that when the temperature is too high, the cooling measures can be started in time to prevent the lens from overheating locally, and the service life and safety of the laser protective mask lens are improved. At the same time, calculating the thermal energy conversion efficiency can intelligently manage the utilization of thermal energy, converting excess thermal energy into usable electrical energy, and effectively reducing the waste of energy. When the thermal difference is less than 400°C, it is determined whether the cooling exhaust fan needs to be started based on the lens temperature alone. In low temperature conditions, the opening of the exhaust fan can also be reasonably managed to avoid unnecessary energy consumption, while assisting the lens in heat dissipation. The energy efficiency is further improved. The power supply mode of the exhaust fan also varies according to the specific situation. When the thermal energy conversion is enabled, the cooling exhaust fan is powered by the built-in power supply, and when the exhaust fan is enabled based on the lens temperature alone, it is powered by an external power supply. This separate power supply mode is flexible and efficient, ensuring the stable operation of the cooling exhaust fan under different conditions.

[0042] In another preferred embodiment based on the above embodiment, refer to Figure 2 As shown, this embodiment provides a laser protective mask for applying the above-mentioned laser protective mask heat dissipation control method, including: Mask body 1, lens port 6, lens 7, cooling exhaust fan 2, collection unit 3, built-in power supply unit 4 and external power supply unit 5; A lens opening 6 is provided in the middle of the mask body 1, and a lens 7 is embedded in the lens opening 6. A cooling exhaust fan 2 is fixedly connected to the mask body 1, and the cooling exhaust fan 2 is located above the lens opening 6; The collection unit 3 is fixedly connected to the mask body 1, and the collection unit 3 is located on the left side of the lens opening 6; The built-in power supply unit 4 is fixedly connected to the mask body 1 , and the external power supply unit 5 is fixedly connected to the mask body 1 . The built-in power supply unit 4 is located on the right side of the lens opening 6 , and the external power supply unit 5 is located at the lower part of the built-in power supply unit 4 .

[0043] Specifically, the mask body supports the installation of various components. The material of the mask body 1 is a high-temperature resistant and impact-resistant composite material with strong protective performance, which can effectively isolate the external high temperature and laser radiation. At the same time, it is light in weight, which reduces the burden on the wearer and ensures that there is no obvious discomfort during long-term work. In the middle of the mask body 1, a lens opening 6 is provided to fit the lens 7 so that it is firmly fixed on the mask. The lens 7 can withstand a high temperature of 1000°C. Compared with traditional polycarbonate materials, the heat resistance of the glass lens 7 is improved. This feature allows the lens 7 to be used continuously in extreme environments. It is suitable for underground, aviation, military and other operations that require long-term use in high-temperature and high-energy laser operations, effectively reducing the safety hazards caused by high temperatures. Secondly, lens 7 performs well in laser blocking effect. Although traditional polycarbonate lenses can filter lasers to a certain extent, their protection against high-energy lasers is relatively weak. Lens 7 uses a special coating and material combination to effectively block strong lasers of different wavelengths, avoid damage to the eyes and face, reduce visual fatigue and injury risks caused by strong lasers, and improve work efficiency and safety. Lens 7 has good heat dissipation performance. During laser irradiation, a large amount of heat will accumulate on the surface of the lens. Traditional materials are prone to overheating of the lens, thus affecting its performance and service life. The characteristics of glass lens 7 enable the accumulated heat to be dissipated in time, which not only improves the safety of lens 7, but also improves the comfort of users. Lens 7 also provides multiple protections, which can withstand various potential external threats, such as flying sparks, dust and debris, to ensure the safety of users. Glass lens 7 shows good performance in many aspects, with high temperature heat resistance, high-intensity laser blocking, good heat dissipation and high durability. Whether in high-temperature laser testing, military training or in industrial production, glass lens 7 can provide users with more comprehensive protection.

[0044] It is understandable that in order to prevent the lens 7 from performance degradation or damage due to heat accumulation in a high-temperature working environment, the laser protective mask is also provided with a cooling exhaust fan 2. The cooling exhaust fan 2 is fixedly connected to the mask body 1, and is intended to effectively discharge the hot air generated by the lens 7 absorbing heat, ensuring that the working temperature of the lens 7 is always maintained within a safe range. The opening of the cooling exhaust fan 2 depends on the temperature change of the lens 7. Therefore, during use, the cooling exhaust fan 2 can be automatically adjusted as needed, ensuring the heat dissipation effect and avoiding unnecessary energy consumption. The power supply of the cooling exhaust fan 2 is realized by the built-in power supply unit 4 and the external power supply unit 5. The built-in power supply unit 4 uses the piezoelectric material of the lens 7 to convert heat energy into electrical energy to provide power for the cooling exhaust fan 2. When the conversion requirement is not met and the cooling exhaust fan 2 needs to be turned on, the external power supply unit 5 provides power for the cooling exhaust fan 2, extending the continuity of the power supply, effectively assisting the heat dissipation of the lens 7, and ensuring that the lens 7 can be used in a long-term, high-intensity working environment.

[0045] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0046] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0047] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0048] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for controlling heat dissipation of a laser protective mask, characterized in that: include: Collecting first temperature data of the laser protective mask lens to obtain the lens temperature, and collecting second temperature data of the laser device to obtain the laser device temperature; Determining a thermal difference value based on the lens temperature and the laser device temperature; When the heat difference is greater than or equal to 400° C., a heat energy conversion efficiency is calculated according to the heat difference, and whether to start the heat energy conversion is determined according to the heat energy conversion efficiency; When it is determined to turn on the heat energy conversion, judging whether to turn on the cooling exhaust fan of the laser protective mask according to the heat energy conversion efficiency; When the cooling exhaust fan is turned on according to the heat energy conversion efficiency, a built-in power supply is selected to provide power to the cooling exhaust fan; When it is determined that the heat energy conversion is not to be turned on, the cooling exhaust fan is not turned on; When the thermal difference is less than 400° C., judging whether to turn on the cooling fan according to the lens temperature; When the cooling fan is turned on according to the lens temperature, an external power supply is selected to provide power to the cooling fan.

2. The heat dissipation control method of the laser protective mask according to claim 1, characterized in that: The first temperature data and the second temperature data include: The first temperature data includes: ambient temperature, input heat, lens thermal conductivity, lens surface area, lens mass and lens specific heat capacity; The second temperature data includes: the ambient temperature, released heat, heat transfer area of ​​the laser device, laser device mass, laser device output power and resistance of the laser device.

3. The heat dissipation control method of the laser protective mask according to claim 2, characterized in that: The lens temperature is given by the following formula: ； in, represents the lens temperature, represents the ambient temperature, represents the input heat, k represents the thermal conductivity of the lens, represents the surface area of ​​the lens, m represents the mass of the lens, and c represents the specific heat capacity of the lens.

4. The heat dissipation control method of the laser protective mask according to claim 3, characterized in that: The laser device temperature is obtained by the following formula: ； in, represents the laser device temperature, represents the ambient temperature, Q represents the released heat, represents the heat transfer area of ​​the laser device, represents the mass of the laser device, P represents the output power of the laser device, and R represents the resistance of the laser device.

5. The heat dissipation control method of the laser protective mask according to claim 4, characterized in that: Judging whether to start thermal energy conversion according to the thermal energy conversion efficiency includes: When the heat energy conversion efficiency is greater than or equal to 10%, it is determined that the heat energy conversion is turned on; When the thermal energy conversion efficiency is less than 10%, it is determined that the thermal energy conversion is not turned on.

6. The method for controlling heat dissipation of a laser protective mask according to claim 5, characterized in that: Determining whether to turn on the cooling exhaust fan of the laser protective mask according to the heat energy conversion efficiency includes: When the heat energy conversion efficiency is greater than or equal to 10% and less than or equal to 80%, the cooling exhaust fan is turned on; When the heat energy conversion efficiency is greater than 80% and less than 100%, it is selected not to turn on the cooling exhaust fan.

7. The method for controlling heat dissipation of a laser protective mask according to claim 3, characterized in that: Determining whether to turn on the cooling fan according to the lens temperature includes: When Ta is greater than or equal to 600° C. and less than 700° C., the cooling fan is not turned on; When Ta is greater than or equal to 700° C. and less than or equal to 1000° C., the cooling exhaust fan is turned on.

8. The method for controlling heat dissipation of a laser protective mask according to claim 2, characterized in that: Turning on the cooling exhaust fan includes: The cooling exhaust fan intelligently adjusts the fan power of the cooling exhaust fan according to the ambient temperature; When the ambient temperature is higher than 30°C, the cooling fan starts a high-power operation mode; When the ambient temperature is lower than 15° C., the cooling exhaust fan starts the intermittent operation mode.

9. The method for controlling heat dissipation of a laser protective mask according to claim 8, characterized in that: Also includes: When the ambient temperature is higher than or equal to 40° C., the high power operation mode adjusts the fan power to greater than 90%; When the ambient temperature is higher than 30° C. and lower than 40° C., the high-power operation mode adjusts the fan power to be greater than or equal to 50% and less than 90%; When the ambient temperature is lower than 15° C., the intermittent operation mode adjusts the fan power to be greater than 30% and less than 50%.

10. A laser protective mask, used for applying a laser protective mask heat dissipation control method according to any one of claims 1 to 9, characterized in that: The laser protective mask comprises: Mask body, lens port, lens, cooling fan, collection unit, built-in power supply unit and external power supply unit; The lens opening is provided in the middle of the mask body, the lens is embedded in the lens opening, the cooling exhaust fan is fixedly connected to the mask body, and the cooling exhaust fan is located above the lens opening; The collection unit is fixedly connected to the mask body, and the collection unit is located on the left side of the lens opening; The built-in power supply unit is fixedly connected to the mask body, the external power supply unit is fixedly connected to the mask body, the built-in power supply unit is located on the right side of the lens opening, and the external power supply unit is located below the built-in power supply unit.

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