A portable laser cooling device

Abstract

The present invention discloses a portable laser heat dissipation device, comprising: a heat transmission module, provided with a heat collection component and a transmission component, the heat collection component is arranged at the heat generating part of the laser device and transfers the heat to the transmission component; a heat dissipation module, provided with a heat dissipation component and a phase change material, the transmission component transfers the heat to the heat dissipation component, and the heat dissipation component transfers the heat to the phase change material, and the phase change material absorbs the heat through phase change. The device has good heat dissipation effect, can realize continuous operation, and is very portable.

Description

Technical Field

[0001] The invention belongs to the technical field of heat dissipation devices, and in particular relates to a portable laser heat dissipation device. Background Art

[0002] High-power laser technology has been widely used in the fields of optical fiber communication, optical sensing, information storage, laser display, laser medical treatment, laser processing, laser weapons and pumped solid lasers. High-power laser modules generate a lot of heat during the light output process. If the heat is not dissipated in time, it will inevitably cause the junction temperature to rise, thereby increasing the threshold current of the laser, reducing the efficiency, and causing serious temperature drift of the laser wavelength, which will reduce the life of the laser. Taking reasonable cooling measures and temperature control is the key to the practical application of high-power semiconductor lasers.

[0003] In order to achieve portable field operations, such as laser cutting operations during earthquake relief, high-power laser equipment and its cooling system must be lightweight. At the same time, the battery power is limited when working in the field, so the cooling system must consume as little power as possible to ensure the long-term power supply needs of the laser equipment. The currently commonly used vapor compression refrigeration system is very heavy and large in size to meet the high-power (tens of kilowatts) heat dissipation requirements. The weight and volume mainly come from the compressor and air-cooled condenser, which is not suitable for a single person to carry. The compressor and fan consume about kilowatts of electricity, so it is difficult to meet the field operation requirements of high-power laser equipment in terms of weight and power consumption. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a portable laser heat dissipation device, which has good heat dissipation effect, can realize continuous operation, and is very portable.

[0005] To achieve the above object, the technical solution of the present invention is:

[0006] A portable laser heat dissipation device, comprising:

[0007] A heat transfer module, comprising a heat collection component and a transfer component, wherein the heat collection component is arranged at a heat generating part of the laser device and transfers the heat thereof to the transfer component;

[0008] The heat dissipation module is provided with a heat dissipation component and a phase change material. The transmission component transfers heat to the heat dissipation component, and the heat dissipation component transfers heat to the phase change material. The phase change material absorbs heat through phase change.

[0009] According to an embodiment of the present invention:

[0010] The heat collection component is a thin channel cold plate;

[0011] The transmission component is a heat transfer pipeline, and a heat transfer medium is arranged in the heat transfer pipeline;

[0012] The heat dissipation component is a heat dissipation pipeline;

[0013] The inlet and outlet of the fine channel cold plate are respectively connected to the outlet and inlet of the heat dissipation pipeline through the heat transfer pipeline. After the heat transfer medium enters the fine channel cold plate to absorb heat, it enters the heat dissipation pipeline through the heat transfer pipeline, and the heat dissipation pipeline transfers the heat to the phase change material.

[0014] According to an embodiment of the present invention, the heat transfer pipeline is provided with a pump for circulating the heat transfer medium.

[0015] According to an embodiment of the present invention, an expansion tank is included, which is arranged in the heat transfer pipeline and located between the outlet of the fine channel cold plate and the inlet of the pump.

[0016] According to one embodiment of the present invention, a flow regulating valve is included, the two ends of which are respectively connected to the inlet and outlet of the pump through the heat transfer pipeline, and a flow meter is provided on the heat transfer pipeline between the outlet of the pump and the inlet of the heat dissipation pipeline.

[0017] According to an embodiment of the present invention, a filter is provided at the inlet of the pump.

[0018] According to an embodiment of the present invention, a first temperature sensor is provided at the inlet of the thin channel cold plate or on the heat transfer pipeline connected to the inlet of the thin channel cold plate.

[0019] According to an embodiment of the present invention, a second temperature sensor is included, which is arranged at the outlet of the thin channel cold plate or on the heat transfer pipeline connected to the outlet of the thin channel cold plate.

[0020] According to an embodiment of the present invention, a third temperature sensor is included and is disposed on the laser device.

[0021] According to an embodiment of the present invention, an alarm is included, and the first temperature sensor, the second temperature sensor and the third temperature sensor are all electrically connected to the alarm through a control module.

[0022] According to an embodiment of the present invention, the control module is electrically connected to the laser device and the pump, and when the temperature of the first temperature sensor and / or the third temperature sensor exceeds a threshold, the laser device and the pump are shut down by the control module.

[0023] According to an embodiment of the present invention, a heat-conducting material layer is provided between the fine channel cold plate and the heat-generating part of the laser device.

[0024] According to an embodiment of the present invention, the inlet and the outlet of the heat dissipation pipeline are connected to the heat transfer pipeline through quick connectors.

[0025] According to an embodiment of the present invention, the heat transfer pipeline is provided with a liquid filling valve and an exhaust valve.

[0026] According to an embodiment of the present invention, the phase change material is a eutectic salt solution, and the phase change temperature range is -15°C to 5°C.

[0027] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0028] (1) In the embodiment of the present invention, the heat of the laser device is transferred to the transmission component through the heat collection component, the transmission component transfers the heat to the heat dissipation component, and the heat dissipation component transfers the heat to the phase change material. The phase change material absorbs the heat through phase change, and the phase change material absorbs the heat to achieve the purpose of heat dissipation, and the heat dissipation effect is good; and the phase change material can absorb a large amount of heat in a limited volume, and its overall weight and volume can be greatly reduced compared with other heat sinks, and it is very portable; the heat dissipation module is set separately, and when the phase change material absorbs heat saturated, the heat dissipation module can be replaced, so multiple heat dissipation modules can be carried to achieve continuous operation.

[0029] (2) In the embodiment of the present invention, the heat transfer medium enters the fine channel cold plate to absorb heat and then enters the heat dissipation pipeline through the heat transfer pipeline, and the heat dissipation pipeline transfers the heat to the phase change material. The heat transfer through the heat transfer medium makes the heat conduction efficiency higher.

[0030] (3) In the embodiment of the present invention, a flow regulating valve and a flow meter are provided to monitor and adjust the flow of the heat transfer medium in the heat transfer pipeline and the heat dissipation pipeline in real time, so that the heat transfer efficiency is always maintained at a high level, and an alarm is issued and the laser equipment is shut down in time when the flow is lower than the design flow, so as to protect the laser equipment from over-temperature failure.

[0031] (4) In the embodiment of the present invention, a filter is provided at the inlet of the pump to prevent impurities from entering the pump and causing damage.

[0032] (5) In the embodiment of the present invention, a first temperature sensor is provided to detect the temperature of the heat transfer medium entering the fine channel cold plate to determine whether the phase change material in the heat dissipation module is saturated. If the temperature is too high, the phase change material no longer absorbs heat and is saturated, thereby automatically determining whether the heat dissipation module needs to be replaced.

[0033] (6) In the embodiment of the present invention, an alarm is provided, which sounds an alarm to remind you to replace the heat dissipation module or shut down for maintenance when the temperature is too high.

[0034] (7) In the embodiment of the present invention, the first temperature sensor, the second temperature sensor and the flow meter are all electrically connected to the control module, and the control module is electrically connected to the laser device and the pump. The heat dissipation of the fine channel cold plate can be calculated by the temperature difference between the first temperature sensor and the second temperature sensor and the flow rate of the flow meter, and then compared with the heat generation of the laser device. If the heat dissipation is less than the heat generation, the laser device and the pump are shut down by the control module to protect the entire device.

[0035] (8) In the embodiment of the present invention, the inlet and outlet of the heat dissipation pipeline are connected to the heat transfer pipeline through a quick connector. The quick connector is provided to realize the quick disconnection and connection of the heat dissipation module, so as to realize the quick replacement of the heat dissipation module. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0037] Figure 1 It is an overall schematic diagram of a portable laser heat dissipation device of the present invention;

[0038] Figure 2 It is a schematic diagram of electrical connection of a portable laser heat dissipation device of the present invention;

[0039] Figure 3 A schematic diagram of cold storage of a heat dissipation module of a portable laser heat dissipation device of the present invention.

[0040] Description of reference numerals:

[0041] 1: Laser equipment; 2: Fine channel cold plate; 3: Thermal conductive material layer; 4: Expansion tank; 5: Pump; 6: Filter; 7: First three-way connector; 8: Flow regulating valve; 9: Quick connector; 10: Heat dissipation module; 11: Heat dissipation pipeline; 12: Liquid filling valve; 13: Exhaust valve; 14: Second temperature sensor; 15: Third temperature sensor; 16: First temperature sensor; 17: Flow meter; 18: Control module; 19: Host computer; 20: Alarm; 21: Refrigerator; 22: Second three-way connector; 23: Heat transfer pipeline. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise ratios, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0043] See also Figures 1 to 3The core of the present invention is to provide a portable laser heat dissipation device, including a heat dissipation module 10 and a heat transmission module. The heat dissipation module 10 is provided with a phase change material for absorbing heat; the heat transmission module is used to transfer the heat of the laser device 1 to the phase change material in the heat dissipation module 10. The phase change material absorbs heat to achieve the purpose of heat dissipation, and the heat dissipation effect is good; and the phase change material can absorb a large amount of heat in a limited volume, and its overall weight and volume can be greatly reduced compared to other radiators, and it is very portable; the heat dissipation module 10 is set separately, and when the phase change material absorbs heat saturated, the heat dissipation module 10 can be replaced, so multiple heat dissipation modules 10 can be carried to achieve continuous operation.

[0044] The heat dissipation module 10 is provided with a heat dissipation component and a phase change material. The heat dissipation component is a heat dissipation pipeline 11. The heat dissipation module 10 is a separate module, which can be wrapped by a corresponding shell. The heat dissipation pipeline 11 is provided with a phase change material for absorbing heat inside. The heat dissipation pipeline 11 is bent back and forth to form a coil form to increase the heat dissipation area. The phase change material is filled therein to achieve efficient heat exchange. The inlet and outlet of the heat dissipation pipeline 11 are exposed outside the heat dissipation module 10 for easy connection. Phase change material refers to a substance that changes the state of matter and can provide latent heat when the temperature remains unchanged. The process of changing physical properties is called a phase change process. At this time, the phase change material will absorb or release a large amount of latent heat, usually absorbing heat through melting phase change. Therefore, the use of phase change material has a good heat dissipation effect and is very energy-saving. The selection of phase change material is reasonably selected according to temperature control requirements, heat dissipation requirements, etc., and a phase change material with a small density can be used, which is easier to carry, such as eutectic salt solution, water, paraffin, etc. When the phase change material in the heat dissipation module 10 reaches the heat storage limit, the endurance of the laser device 1 is guaranteed by replacing the heat dissipation module 10.

[0045] The heat transfer module is provided with a heat collection component and a transmission component. The transmission component is a heat transfer pipeline 23 storing a heat transfer medium, and the heat transfer pipeline 23 is provided with a pump 5 for circulating the heat transfer medium. The heat transfer pipeline 23 is connected to the heat dissipation pipeline 11. Through the circulation of the heat transfer medium, the heat of the laser device 1 is transferred to the phase change material to achieve the purpose of heat dissipation.

[0046] The heat collection component is arranged at the heating part of the laser device 1 to absorb and transfer heat. In this embodiment, the heat collection component is a fine channel cold plate 2. The inlet and outlet of the fine channel cold plate 2 are respectively connected to the outlet and inlet of the heat dissipation pipeline 11 through the heat transfer pipeline 23. The fine channel cold plate 2 has the advantages of compact structure, reliable performance, and high heat dissipation efficiency. It is matched with the heat dissipation module 10 of the present invention to make the overall volume smaller and easier to carry. The fine channel cold plate 2 is attached to the heating part of the laser device 1 through the heat conductive material layer 3 to enhance the heat conduction between the two. The heat conductive material layer 3 can be thermal conductive silicone grease, etc., which can collect the heat of the laser device 1 more efficiently and make the overall heat dissipation effect better; and the fine channel cold plate 2 can be designed and customized according to the size, heat generation, temperature index, weight and other requirements of the laser device 1. Among them, the fine channel cold plate 2 transfers the heat of the laser device 1 to the heat transfer medium, and the heat transfer medium transfers the heat to the phase change material through the heat dissipation pipeline 11.

[0047] It also includes a monitoring module, which is composed of a first temperature sensor 16, a second temperature sensor 14, a flow meter 17 arranged in the heat transfer pipeline 23 and a third temperature sensor 15 arranged in the laser device 1, as well as an alarm 20 and a control module 18 electrically connected to the first temperature sensor 16, the second temperature sensor 14, the flow meter 17 and the third temperature sensor 15, and is used to remind the replacement of the heat dissipation module 10, and has the function of monitoring the system operation status and fault alarm.

[0048] Specifically, the outlet of the heat dissipation pipeline 11 is connected to the inlet of the fine channel cold plate 2 through the heat transfer pipeline 23, and the outlet of the heat dissipation pipeline 11 is connected to the heat transfer pipeline 23 through a quick connector 9. The quick connector 9 can realize the quick connection and disconnection of the pipeline. It has its own connection and disconnection self-locking function, which can quickly disconnect and facilitate the replacement of the entire heat dissipation module 10. Specifically, it can be a floating disconnector. The low-temperature heat transfer medium at the outlet of the heat dissipation module 10 directly enters the fine channel cold plate 2 for heat exchange, reducing the heat absorption of the low-temperature heat transfer medium to the external environment, and ensuring the maximum utilization of the cooling capacity of the heat dissipation module.

[0049] A first temperature sensor 16 is provided at the inlet of the fine channel cold plate 2, specifically located on the heat transfer pipeline 23 between the outlet of the heat dissipation pipeline 11 and the inlet of the fine channel cold plate 2. That is to say, the first temperature sensor 16 detects the temperature of the heat transfer medium entering the fine channel cold plate 2, in other words, detects the temperature of the heat transfer medium after heat dissipation by the heat dissipation module 10. If the detected temperature is too high, the phase change material in the heat dissipation module 10 no longer absorbs heat and is saturated, so as to automatically determine whether the heat dissipation module 10 needs to be replaced, thereby preventing the damage to the laser device 1 caused by not replacing the saturated heat dissipation module 10 in time. The first temperature sensor 16 is electrically connected to the alarm 20 through the control module 18. The temperature data detected by the first temperature sensor 16 is transmitted to the control module 18. When the control module 18 determines that the temperature is too high and exceeds the threshold, the alarm 20 is activated to alarm, reminding that the heat dissipation module 10 needs to be replaced. The temperature measured by the first temperature sensor 16 is compared with its design temperature. When the temperature exceeds the design temperature for a period of time, the laser device 1 is shut down urgently to prevent the laser device 1 from being damaged and failing due to insufficient heat dissipation capacity and exceeding the temperature index requirement.

[0050] The outlet of the fine channel cold plate 2 is connected to the inlet of the expansion tank 4 through the heat transfer pipeline 23. The expansion tank 4 plays a role in stabilizing the pressure and supplementing the volume change of the heat transfer medium caused by the thermal expansion and contraction effect. The outlet of the expansion tank 4 is connected to the first three-way joint 7 through the heat transfer pipeline 23. The other two routes of the first three-way joint 7 are respectively connected to the outlet of the flow regulating valve 8 and the inlet of the filter 6 through the heat transfer pipeline 23. The inlet of the flow regulating valve 8 is connected to the second three-way joint 22.

[0051] The outlet of the filter 6 is connected to the inlet of the pump 5 , and the outlet of the pump 5 is connected to the second three-way joint 22 , that is, the filter 6 is arranged in front of the outlet of the pump 5 to filter impurities in the heat transfer medium to prevent damage to the pump 5 .

[0052] The second three-way connector 22 is connected to the inlet of the heat dissipation pipeline 11 through the heat transfer pipeline 23 and is connected through the quick connector 9 for easy disconnection.

[0053] That is to say, the inlet and outlet of the flow regulating valve 8 are respectively arranged at the outlet and inlet of the pump 5, which is a bypass in parallel with the pump 5 and the filter 6. The heat transfer medium flowing out of the outlet of the pump 5 flows back to the inlet of the pump 5, which is used to adjust the flow entering the heat dissipation pipeline. When the opening of the flow regulating valve increases, the bypass reflux flow increases, while the heat dissipation pipeline flow decreases, and vice versa. A flow meter 17 is provided on the heat transfer pipeline 23 between the second three-way connector 22 and the heat dissipation pipeline 11, which is used to monitor the flow of the heat transfer medium entering the heat dissipation pipeline 11, and the flow meter 17 is electrically connected to the control module 18 and the alarm 20. The flow data is used to compare and judge with the design flow. When the flow measured by the flow meter 17 is lower than the lower limit of the design flow, the alarm 20 alarms, and the flow of the heat transfer medium entering the heat dissipation module 10 is increased through the flow regulating valve 8.

[0054] A second temperature sensor 14 is provided at the outlet of the fine channel cold plate 2, which is specifically provided on the heat transfer pipeline 23 between the outlet of the fine channel cold plate 2 and the inlet of the expansion tank 4, and is used to monitor the temperature of the heat transfer medium coming out of the fine channel cold plate 2 to judge the working condition of the fine channel cold plate 2, and the second temperature sensor 14 is electrically connected to the alarm 20 through the control module 18, and the second temperature sensor 14 detects the temperature and transmits it to the control module 18, and the first temperature sensor 16 and the second temperature sensor 14 at the inlet and outlet of the fine channel cold plate 2 detect the inlet and outlet temperatures, and the flowmeter 17 at the inlet of the heat dissipation module 10 measures the heat transfer medium flow, so as to calculate the heat dissipation through the inlet and outlet temperature difference and the heat transfer medium flowmeter 17, and the calculation method of the heat dissipation and the heat generation is as follows:

[0055] Assume that the temperature collected by the first temperature sensor 16 is T1 (℃), the temperature collected by the second temperature sensor is T2 (℃), the flow rate collected by the flow meter 17 is V (m3 / s), the heat transfer medium density is ρ (kg / m3), the heat transfer working specific heat capacity is C (J / kg / ℃), and the heat dissipation is Q1 (W). Then the heat dissipation per unit time is:

[0056] Q1=ρVC(T2-T1)

[0057] The number of laser equipment pump sources turned on is N, the heat generated by a single pump source module is known to be q (W), and the total heat generated by the laser equipment is Q2 (W). The heat generated per unit time is:

[0058] Q2=Nq

[0059] When Q1<0.98×Q2 appears for a period of time (10s), the heat dissipation capacity is insufficient, an alarm is issued, and the laser device 1 is shut down urgently. If the temperature measured by the first temperature sensor 16 exceeds the design temperature during this process, the heat dissipation module 10 is replaced; if the temperature measured by the first temperature sensor 16 is lower than the design temperature during this process, the fine channel cold plate 2 has insufficient heat collection capacity due to a fault, and it is judged that the system is faulty.

[0060] The third temperature sensor 15 is disposed on the laser device 1 for monitoring the temperature of the laser device 1 and is also electrically connected to the alarm 20 through the control module 18. If an over-temperature condition is detected, the alarm 20 will sound an alarm and shut down the laser device 1 urgently.

[0061] In this embodiment, the heat transfer medium is liquid, so the heat transfer pipeline 23 is provided with a liquid filling valve 12 and an exhaust valve 13. Specifically, the liquid filling valve 12 is provided on the heat transfer pipeline 23 between the outlet of the expansion tank 4 and the first three-way valve. The exhaust valve 13 is provided on the heat transfer pipeline 23 between the outlet of the heat dissipation pipeline 11 and the inlet of the fine channel cold plate 2.

[0062] It also includes a host computer 19, which is electrically connected to the control module 18. The host computer 19 reads the data of the first temperature sensor 16, the second temperature sensor 14, the third temperature sensor 15 and the flow meter 17, and displays the operating status of the entire device in real time after calculation. The host computer 19 determines whether the heat dissipation module 10 needs to be replaced. The host computer 19 will control the alarm 20 through the control module 18 to sound an alarm and control the shutdown of the laser device 1 and the pump 5, and remind the operator to replace the heat dissipation module 10 through sound and light.

[0063] During the operation of the heat dissipation device, the host computer 19 judges the data read by the first temperature sensor 16, the second temperature sensor 14, the third temperature sensor 15 and the flow meter 17 through the control strategy, and makes a judgment on whether the system operation is "normal" or "fault" or "need to replace the heat dissipation module" or "warning" state, and makes an "emergency stop" instruction for the above-mentioned "fault" or "need to replace the heat dissipation module" state judgment, so as to protect the laser device 1 from over-temperature failure due to insufficient performance of the heat dissipation device during operation. Specifically, the host computer 19 reads the temperature and flow data through the control module 18, and the host computer 19 calculates the heat dissipation with the real-time data collected from the first temperature sensor 16, the second temperature sensor 14 and the flow meter 17. After the calculation, the host computer 19 displays the system operation status in real time and judges whether the heat dissipation module 10 needs to be replaced. When the calculated heat dissipation shows Q1<0.98×Q2, and the temperature measured by the first temperature sensor 16 is lower than the design temperature, it is judged that the entire heat dissipation device has a good heat dissipation capacity, and the system operation status is "normal". When the calculated heat dissipation within a period of time (10s) shows Q1<0.98×Q2, and the temperature measured by the first temperature sensor 16 is lower than the design temperature, it is judged that the fine channel cold plate 2 has insufficient heat collection capacity due to a fault, and the system is judged to be "faulty", and an "emergency shutdown" is performed, and then the system needs to be repaired. If the temperature measured by the first temperature sensor 16 is higher than the design temperature, the cooling capacity of the heat dissipation module 10 has been released, and it is judged that "the heat dissipation module needs to be replaced"; if it is judged that the system is "faulty" or "the heat dissipation module needs to be replaced", the host computer 19 will issue an "emergency shutdown" command, send a signal to the alarm 20, and shut down the laser device 1 and the pump 5 through the control module 18, and the alarm 20 emits a sound and corresponding lights to remind the operator to perform system maintenance or replace the heat dissipation module 10.

[0064] Specifically, during the operation of the heat dissipation device, an over-temperature and fault alarm is required, and an early warning is issued by judging the reading of the first temperature sensor 16. When the temperature of the first temperature sensor 16 is lower than a certain amount of the design temperature of the inlet of the fine channel cold plate 2, the inlet temperature of the fine channel cold plate 2 is judged to be "normal". When the temperature of the first temperature sensor 16 is close to the design temperature of the inlet of the fine channel cold plate 2, the host computer 19 makes an "early warning" state judgment that the heat dissipation capacity begins to be insufficient, and the host computer 19 enables the alarm 20; when the temperature of the first temperature sensor 16 exceeds the design temperature of the inlet of the fine channel cold plate 2, the host computer 19 makes a state judgment of "the heat dissipation module needs to be replaced", and at the same time, the host computer 19 issues an "emergency stop" command to control the shutdown of the laser device 1 and the pump 5.

[0065] Specifically, during the operation of the heat dissipation device, the flow rate of the heat transfer medium in the heat transfer pipeline 23 needs to be monitored by the flow meter 17, and the upper computer 19 judges the flow data collected by the flow meter 17. When the flow rate is greater than the upper limit design flow rate, the upper computer 19 judges that the flow operation is "normal"; when the flow rate is lower than the upper limit design flow rate of the system, the upper computer 19 makes a "warning" state judgment and makes the alarm 20 sound an alarm; after receiving the alarm signal, the operator increases the flow rate of the heat transfer medium through the flow control valve 8. If the flow rate is greater than the upper limit design flow rate after adjustment, the alarm 20 is cancelled; when the flow rate is lower than the lower limit design flow rate, the upper computer 19 judges it as a "fault" state and makes an "emergency shutdown" instruction to control the shutdown of the laser device 1 and the pump 5.

[0066] Specifically, the temperature of the laser device 1 is directly read by the third temperature sensor 15, and the upper computer 19 determines the temperature of the laser device 1. When the temperature exceeds the temperature index of the laser device 1, the upper computer 19 determines it as a "fault" state, and the upper computer 19 issues an "emergency stop" command to control the shutdown of the laser device 1 and the pump 5.

[0067] The purpose of the present invention is to achieve effective cooling of the laser device 1 during high-power laser operations in the field (adapting to low power supply, requiring manual carrying, and light weight). In order to control the weight and power consumption of the cooling system of the high-power laser device 1 within a relatively low range, a portable laser heat dissipation device is invented. The device does not use an air-cooled condenser as a means of heat dissipation, but uses a phase change material as a means of heat dissipation. The heat dissipation module 10 is coupled to the single-phase fluid circuit driven by the pump 5, so that the heat of the laser device 1 is absorbed by the phase change material, thereby greatly reducing the weight and volume. As a replaceable modular device, the heat dissipation module 10 can be carried by other personnel as a work backup. When a heat dissipation module 10 completes the phase change heat absorption, it is disconnected from the quick connector 9, and the backup heat dissipation module 10 is replaced to achieve the endurance of the laser device 1. The power consumption of the device mainly comes from the pump 5, which consumes only a hundred watts of power. The limited electric energy carried is supplied to the laser device 1 as much as possible. Therefore, the heat dissipation device only consumes a hundred watts of electric energy when working in the field to achieve a heat dissipation capacity of ten kilowatts, and the weight of a single system can meet the requirements of single-person portability. The replaceable heat dissipation module 10 is modularly designed under the requirements of total weight and heat dissipation to achieve single-person portability. According to the operating time of the high-power laser device 1, the number of heat dissipation modules 10 is reasonably configured. The present invention can ensure the heat dissipation requirements of the high-power laser device 1 under the conditions of low energy consumption and low weight index requirements. And it can be reused after cooling at the service station, saving costs. And the relevant operation process and control strategy are designed to realize the status detection and early warning of the entire heat dissipation device. When the heat dissipation device fails and the heat dissipation capacity is insufficient, the laser device 1 can be detected in real time and shut down urgently, ensuring the safety of the laser device 1.

[0068] The working process of the present invention is further described below:

[0069] First, before performing field work tasks, the replaceable heat dissipation module 10 is subjected to cold storage treatment at the service station through the refrigerator 21 to ensure that the required heat dissipation modules 10 are all solidified and have heat storage capacity. Connect the ready heat dissipation module 10 to the heat transfer pipeline 23, and fill the heat transfer medium into the heat transfer pipeline 23 through the filling valve 12, remove the gas in the system through the exhaust valve 13, and test run the heat dissipation device to check whether it works properly. After testing and confirming that the heat dissipation device is operating normally, it can be carried out of the station by one person, and other spare heat dissipation modules 10 can be carried by other people to the emergency rescue site.

[0070] After entering the workplace, first perform a self-check of the laser equipment 1 and the heat sink to ensure that each device is working properly. During the self-check, first turn on the power supply to ensure that the host computer 19, the first temperature sensor 16, the second temperature sensor 14, the third temperature sensor 15, the flow meter 17, etc. are turned on normally; then the pump 5 judges the flow test data of the flow meter 17 and the temperature data of the first temperature sensor 16 through the host computer 19. If the flow rate is greater than the upper limit design flow rate and the temperature of the first temperature sensor 16 is lower than the design inlet temperature of the fine channel cold plate 2, it is judged that the heat sink is working normally. After 5 seconds, the laser equipment 1 is automatically turned on, and the laser equipment 1 can perform light output operations according to work needs.

[0071] During the operation of the laser device 1, the host computer 19 judges the data read by the first temperature sensor 16, the second temperature sensor 14, the third temperature sensor 15 and the flow meter 17, and makes a judgment on whether the system operation is "normal" or "fault" or "need to replace the heat dissipation module" or "warning" state, and makes an "emergency stop" instruction for the above-mentioned "fault" or "need to replace the heat dissipation module" state judgment, so as to protect the laser device 1 from over-temperature failure due to insufficient performance of the heat dissipation device during operation. Specifically, the host computer 19 reads the temperature and flow data through the control module 18, and the host computer 19 calculates the heat dissipation with the real-time data collected from the first temperature sensor 16, the second temperature sensor 14 and the flow meter 17. After the calculation, the host computer 19 displays the system operation status in real time and judges whether the heat dissipation module 10 needs to be replaced. When the calculated heat dissipation shows Q1<0.98×Q2, and the temperature measured by the first temperature sensor 16 is lower than the design temperature, it is judged that the entire heat dissipation device has a good heat dissipation capacity, and the system operation status is "normal". When the heat dissipation Q1 calculated within a period of time (10s) is less than 0.98×Q2, and the temperature measured by the first temperature sensor 16 is lower than the design temperature, it is judged that the fine channel cold plate 2 has insufficient heat collection capacity due to a fault, and the system is judged to be "faulty", and an "emergency shutdown" is performed, and then the system needs to be repaired. If the temperature measured by the first temperature sensor 16 is higher than the design temperature, the cooling capacity of the heat dissipation module 10 has been released, and it is judged that "the heat dissipation module needs to be replaced"; if it is judged that the system is "faulty" or "the heat dissipation module needs to be replaced", the host computer 19 will issue an "emergency shutdown" command, send a signal to the alarm 20, and shut down the laser device 1 and the pump 5 through the control module 18, and the alarm 20 emits a sound and corresponding lights to remind the operator to perform system maintenance or replace the heat dissipation module 10.

[0072] After normal laser work is completed, the system enters the standby mode, and the pump 5 can be turned off after the laser device 1 stops working for 5 seconds.

[0073] The heat dissipation module 10 that has completed phase change and heat absorption is brought back to the service station. The service station can provide sufficient power supply and use the refrigerator 21 to provide refrigerant to re-cool and solidify the phase change material in the heat dissipation module 10 for the next phase change melting and heat absorption.

[0074] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. A portable laser heat dissipation device, characterized in that: include: The heat transfer module is provided with a heat collection component and a transfer component. The heat collection component is provided at the heat generating part of the laser device and transfers the heat to the transfer component. The heat collection component is a thin channel cold plate. The transfer component is a heat transfer pipeline, and a heat transfer medium and a pump are provided in the heat transfer pipeline. The heat dissipation module is provided with a heat dissipation component and a phase change material, wherein the transmission component transfers heat to the heat dissipation component, the heat dissipation component is a heat dissipation pipeline; and the heat dissipation component transfers heat to the phase change material, and the phase change material absorbs heat through phase change; A flow regulating valve, wherein both ends of the flow regulating valve are respectively connected to the inlet and outlet of the pump through the heat transfer pipeline, and a flow meter is provided on the heat transfer pipeline between the outlet of the pump and the inlet of the heat dissipation pipeline; It includes a first temperature sensor, which is arranged at the inlet of the fine channel cold plate or the heat transfer pipeline connected to the inlet of the fine channel cold plate; A second temperature sensor is provided at the outlet of the thin channel cold plate or at the heat transfer pipeline connected to the outlet of the thin channel cold plate; comprising a third temperature sensor, disposed on the laser device; An alarm is included, and the alarm is electrically connected to the first temperature sensor, the second temperature sensor and the third temperature sensor through a control module; Assume that the temperature collected by the first temperature sensor is T1°C, the temperature collected by the second temperature sensor is T2°C, the flow rate collected by the flow meter is Vm3 / s, the heat transfer medium density is ρkg / m3, the heat transfer working specific heat capacity is CJ / kg / °C, and the heat dissipation is Q1W, then the heat dissipation per unit time is: Q1=ρVC (T2-T1) The number of laser equipment pump sources turned on is N, the heat generated by a single pump source module is known to be qW, and the total heat generated by the laser equipment is Q2W, then the heat generated per unit time is: Q2=Nq When Q1<0.98×Q2 appears for a period of time, the heat dissipation capacity is insufficient, an alarm is issued, and the laser device is shut down urgently. If the temperature measured by the first temperature sensor exceeds the design temperature during this process, the heat dissipation module is replaced; If the temperature measured by the first temperature sensor during the process is lower than the design temperature, it is determined that the fine channel cold plate has insufficient heat collection capacity due to a fault, and a system fault is determined.

2. The portable laser heat dissipation device according to claim 1, characterized in that: The inlet and outlet of the fine channel cold plate are respectively connected to the outlet and inlet of the heat dissipation pipeline through the heat transfer pipeline. After the heat transfer medium enters the fine channel cold plate to absorb heat, it enters the heat dissipation pipeline through the heat transfer pipeline, and the heat dissipation pipeline transfers the heat to the phase change material.

3. The portable laser heat dissipation device according to claim 2, characterized in that: The pump is used for the circulation of the heat transfer medium.

4. The portable laser heat dissipation device according to claim 3, characterized in that: An expansion tank is included, which is arranged in the heat transfer pipeline and located between the outlet of the fine channel cold plate and the inlet of the pump.

5. The portable laser heat dissipation device according to claim 3, characterized in that: The inlet of the pump is provided with a filter.

6. The portable laser heat dissipation device according to claim 1, characterized in that: The flow meter is electrically connected to the alarm through the control module.

7. The portable laser heat dissipation device according to claim 6, characterized in that: The control module is electrically connected to the laser device and the pump. When the temperature of the first temperature sensor and / or the temperature of the third temperature sensor exceeds a threshold, the control module controls the laser device and the pump to be turned off.

8. The portable laser heat dissipation device according to claim 2, characterized in that: A heat-conducting material layer is provided between the fine channel cold plate and the heat-generating part of the laser device.

9. The portable laser heat dissipation device according to claim 2, characterized in that: The inlet and outlet of the heat dissipation pipeline are both connected to the heat transfer pipeline through quick connectors.

10. The portable laser heat dissipation device according to claim 2, characterized in that: The heat transfer pipeline is provided with a liquid adding valve and an exhaust valve.

11. The portable laser heat dissipation device according to claim 2, characterized in that: The phase change material is a eutectic salt solution, and the phase change temperature range is -15°C to 5°C.

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