CN112269413A - Control method of portable laser heat dissipation device - Google Patents

Control method of portable laser heat dissipation device Download PDF

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Publication number
CN112269413A
CN112269413A CN202011251251.9A CN202011251251A CN112269413A CN 112269413 A CN112269413 A CN 112269413A CN 202011251251 A CN202011251251 A CN 202011251251A CN 112269413 A CN112269413 A CN 112269413A
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inlet
temperature
heat dissipation
flow
dissipation device
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CN112269413B (en
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许安易
李鹏
包轶颖
李广诚
来霄毅
赵阳东
徐永成
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Shanghai Aerospace System Engineering Institute
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Shanghai Aerospace System Engineering Institute
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Lasers (AREA)
  • Laser Beam Processing (AREA)

Abstract

The invention relates to a control method of a portable laser heat dissipation device, which comprises the following steps: step one, starting a heat dissipation device, not starting laser equipment, and detecting the temperature of a heat transfer working medium at an inlet of a cold plate and the flow of the heat transfer working medium at an inlet of a phase change heat exchanger; if the temperature value T at the inlet of the cold plate1Below a set minimum temperature TminAnd the flow value F at the inlet of the phase change heat exchanger is larger than the set maximum flow FmaxIf so, judging that the heat dissipation device is started to work normally, and starting the laser equipment; after the heat dissipation device and the laser equipment are normally started, detecting the temperature at the inlet of the cold plate and the heat transfer working medium flow at the inlet of the phase change heat exchanger in real time; if the real-time temperature T at the entrance of the cold plate1 real timeLower than a set maximum temperature value TmaxAnd the flow rate at the inlet of the phase change heat exchanger is FReal timeGreater than a set minimum flow FminWhen the laser device works, the heat dissipation device works normally, and the laser device can keep working; otherwise, the laser device is turned off.

Description

Control method of portable laser heat dissipation device
Technical Field
The invention relates to the technical field of heat dissipation devices, in particular to a control method of a portable laser heat dissipation device.
Background
In order to realize portable field operation, such as laser cutting operation in earthquake relief, the laser equipment needs to satisfy the requirement of light weight of the laser equipment and a cooling system thereof, and the electric quantity of a battery carried in field work is limited, so that the power consumption of the cooling system is required to be as low as possible to ensure the long-time power supply requirement of the laser equipment. The conventional vapor compression refrigeration system has the defects that the weight and the volume required by meeting the high-power (ten kilowatt level) heat dissipation requirements are large, the weight and the volume are mainly from a compressor and an air-cooled condenser and are not suitable for being carried by a single person, and the compressor and the fan consume electric energy about kilowatt level, so that the weight and the power consumption of the conventional vapor compression refrigeration system are difficult to meet the field operation requirements of high-power laser equipment.
Please refer to application number 202010338432.9 published by the national intellectual property office in 7/10/2020, entitled a portable laser heat dissipation device, wherein the heat dissipation device for laser equipment adopts a cold plate to collect heat of the laser equipment, adopts a phase change heat exchanger to dissipate the heat, and drives a heat transfer working medium through a pump to transmit the heat from the cold plate to the phase change heat exchanger for dissipating the heat. Laser equipment installs on the cold drawing surface, gives the cold drawing with self heat transfer, and the working medium absorbs the heat through the inside channel of cold drawing, and the heat is transmitted to phase change heat exchanger department along with the working medium, and the heat of working medium is absorbed through the mode of phase transition to the inside phase change material of phase change heat exchanger.
The heat absorption capacity of the phase change material in the phase change heat exchanger disappears along with the completion of phase change, so the effective heat dissipation time of the phase change heat exchanger is limited, and in order to meet the heat dissipation requirement of laser working for a long time in an emergency process, the phase change heat exchanger needs to be replaced after the phase change material in the phase change heat exchanger completely absorbs heat and changes phase, and whether the replacement is carried out needs to be determined according to the real-time running state of a heat dissipation device.
The control and the operation state monitoring of the laser equipment heat dissipation device are of great importance to the safety of the operation of a high-power laser system, the operation state of the heat dissipation device is monitored by measuring and judging the operation flow and the temperature of key points of the heat dissipation device, the shutdown and the alarm are carried out under the abnormal operation condition, and the safe operation of the heat dissipation device is guaranteed.
Therefore, it is urgent to monitor the operation state of the heat dissipation device of the laser device and make corresponding actions in time to ensure the safe and effective operation of the heat dissipation device.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method for controlling a portable laser heat sink, comprising:
step one, starting a heat dissipation device, not starting laser equipment, and detecting the temperature of a heat transfer working medium at an inlet of a cold plate and the flow of the heat transfer working medium at an inlet of a phase change heat exchanger;
if the temperature value T at the inlet of the cold plate1Below a set minimum temperature TminAnd the flow value F at the inlet of the phase change heat exchanger is larger than the set maximum flow FmaxIf so, judging that the heat dissipation device is started to work normally, and starting the laser equipment;
after the heat dissipation device and the laser equipment are normally started, detecting the temperature at the inlet of the cold plate and the heat transfer working medium flow at the inlet of the phase change heat exchanger in real time;
if the real-time temperature T at the entrance of the cold plate1 real timeLower than a set maximum temperature value TmaxAnd the flow rate at the inlet of the phase change heat exchanger is FReal timeGreater than a set minimum flow FminWhen the laser device works, the heat dissipation device works normally, and the laser device can keep working; otherwise, the laser device is turned off.
Preferably, in step one, if the temperature value T at the inlet of the cold plate is lower than the temperature value T at the inlet of the cold plate1Above a set minimum temperature TminAnd the heat dissipation device needs to be cooled down after running for a period of time.
Preferably, the device to be cooled runs for a period of time, and when the running time t is greater than the set time tsetThen, if the temperature value T at the inlet of the cold plate1Still higher than the set minimum temperature TminIf the heat dissipation capability of the heat dissipation device is not enough, the heat dissipation device needs to be closed, and the phase change heat exchanger needs to be replaced.
Preferably, in the step one, if the flow value F at the inlet of the phase change heat exchanger is less than the set maximum flow FmaxThen, the flow at the inlet of the phase change heat exchanger needs to be increased.
Preferably, in step two, if the real-time temperature T at the entrance of the cold plate is1 real timeLower than a set maximum temperature value TmaxBut real-time flow value F at inlet of phase-change heat exchangerReal timeLess than a set minimum flow FminIf so, judging the system fault and closing the heat dissipation device.
Preferably, in step two, if the real-time temperature T at the entrance of the cold plate is1 real timeExceeding a set maximum temperature value TmaxReal-time flow value F at the inlet of the phase change heat exchangerReal timeGreater than a set minimum flow FminAnd then the heat dissipation device is closed, and the phase change heat exchanger is replaced.
Preferably, in step two, if the real-time temperature T at the entrance of the cold plate is1 real timeExceeding a set maximum temperature value TmaxReal-time flow value F at the inlet of the phase change heat exchangerReal timeLess than a set minimum flow FminIf the system fails, the heat dissipation device is closed.
Preferably, in the second step, the temperature of the laser device is detected in real time, when the temperature T of the laser device is reached2 real timeExceeding a set safety temperature TsafeAnd judging that the laser equipment exceeds the safe temperature, and closing the laser equipment and the heat dissipation device.
Preferably, the heat dissipation device comprises the cold plate, an expansion tank, a pump, a flow meter and a phase change heat exchanger which are connected in sequence;
the heat dissipation device also comprises a flow regulating valve, and an inlet and an outlet of the flow regulating valve are respectively connected with an outlet and an inlet of the pump and used for regulating the flow of the heat transfer working medium at the inlet of the phase change heat exchanger;
a first temperature sensor is arranged at the inlet of the cold plate;
the laser equipment is installed on the cold plate, and a second temperature sensor is arranged on the laser equipment.
Compared with the prior art, the invention has the following technical effects:
1. the invention provides a control method of a portable laser heat dissipation device, which can realize the judgment of the operation state of the heat dissipation device only by detecting the temperature and the flow of a heat transfer working medium in a pipeline of the heat dissipation device and ensure the safety of laser work, and aims to monitor the operation state of the laser heat dissipation device and make corresponding actions in time and ensure the safe and effective operation of the laser heat dissipation device.
2. According to the invention, whether the phase change heat exchanger completes the phase change heat absorption process is judged by detecting the temperature value of the working medium at the inlet of the cold plate, so that the phase change heat exchanger completing the phase change heat absorption process can be replaced, and the working duration of the heat dissipation device is met.
3. The invention detects the temperature value of the laser equipment and compares the temperature value with the working safety temperature of the laser equipment, and carries out emergency shutdown and maintenance when the temperature value exceeds the safety temperature.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. In the drawings:
fig. 1 is a schematic structural diagram of a portable laser heat dissipation device according to a preferred embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a starting process of a control method of a portable laser heat dissipation device according to the present invention;
fig. 3 is a schematic diagram illustrating an operation process of a control method of the portable laser heat dissipation device according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise ratio for the purpose of facilitating and distinctly aiding in the description of the embodiments of the invention.
Referring to fig. 1 to 3, the present invention provides a method for controlling a portable laser heat dissipation device, in which a laser apparatus dissipates heat through a heat dissipation device, specifically, the heat dissipation device collects heat of the laser apparatus 1 through a cold plate 2, dissipates heat through a phase change heat exchanger 7, and transfers heat from the cold plate 2 to the phase change heat exchanger 7 through a heat transfer working medium driven by a pump 4. Laser equipment 1 installs on cold drawing 2 surfaces, generate heat with self work and transmit for cold drawing 2, heat transfer working medium carries out the heat convection through cold drawing 2 inside channel and cold drawing 2, absorb the heat, the heat is transmitted to phase change heat exchanger 7 department along with heat transfer working medium under the drive of pump 4, heat transfer working medium carries out the heat transfer with the inside phase change material of phase change heat exchanger 7, the heat of heat transfer working medium is absorbed through the mode of phase transition to the inside phase change material of phase change heat exchanger 7, continue to get into cold drawing 2 after the heat transfer working medium cooling after exothermic.
In this embodiment, the heat dissipation device includes cold plate 2, expansion tank 3, pump 4, flow control valve (valve) 5, flowmeter 9, phase change heat exchanger 7 that connect gradually, cold plate 2, expansion tank 3, pump 4, flowmeter 9, phase change heat exchanger 7 form the circulation system of heat transfer working medium.
The inlet and outlet of the flow regulating valve 5 are respectively connected with the outlet and the inlet of the pump 4, and are a bypass connected with the pump in parallel, and are used for regulating the heat transfer working medium flow at the inlet of the phase change heat exchanger 7. In this embodiment, the heat transfer medium flowing from the outlet of the pump 4 is returned to the inlet of the pump 4 for regulating the flow into the phase-change heat exchanger 7, and when the opening of the flow regulating valve 5 is increased, the bypass return flow is increased and the flow of the phase-change heat exchanger 7 is decreased, and vice versa.
The inlet of cold drawing 2 is equipped with first temperature sensor 8, specifically is located the heat transfer pipeline between cold drawing 2 entry and the phase change heat exchanger 7 export, and first temperature sensor 8 is used for detecting the temperature of the heat transfer working medium that gets into cold drawing 2, or detects the temperature of the heat transfer working medium after phase change heat exchanger 7 dispels the heat.
The laser device 1 is installed on the cold plate 2, and a second temperature sensor 10 is arranged on the laser device 1.
The heat absorption capacity of the phase change material in the phase change heat exchanger 7 disappears along with the completion of phase change, so the effective heat dissipation time of the phase change heat exchanger 7 is limited, in order to meet the heat dissipation requirement of laser during long-time endurance work in the outdoor operation process, after the phase change material in the phase change heat exchanger 7 completely absorbs heat and changes phase, the phase change heat exchanger 7 needs to be found and replaced in time, so that the laser equipment 1 does not lose efficacy due to insufficient heat dissipation capacity, meanwhile, the flow value of the heat transfer working medium, the temperature of the heat transfer working medium at the inlet of the cold plate 2 and the temperature of the laser equipment 1 need to be monitored in the operation process of the heat dissipation device, and whether each value is in a normal working range is judged, thereby the monitoring of the operation state of the heat dissipation device is realized, and the emergency shutdown is carried out.
Specifically, before the laser device 1 works (i.e., before the laser device 1 is started), the system pump 4 is started (i.e., the heat dissipation device is started) first, the heat transfer working medium temperature at the inlet of the cold plate 2 is detected through the first temperature sensor 8, the heat transfer working medium flow value at the inlet of the phase change heat exchanger 7 is detected through the flow meter 9, and the temperature value T at the inlet of the cold plate 2 is obtained1Minimum value T below set temperatureminAnd the flow value F at the inlet of the phase change heat exchanger 7 is larger than the maximum value F of the set flowmaxAnd judging that the heat dissipation device is normally started to work, and starting the laser equipment 1 to work.
Specifically, in the working process of the laser device 1 and the heat dissipation device, the temperature of the heat transfer working medium at the inlet of the cold plate 2 is detected in real time through the first temperature sensor 8, and when the real-time temperature T at the inlet of the cold plate 2 is detected1 real timeExceeding a set maximum temperature TmaxIn the meantime, it is determined that the heat dissipation capability of the heat dissipation device is insufficient, and therefore, the heat dissipation device and the laser device need to be stopped and the phase change heat exchanger needs to be replaced.
Specifically, during the working process of the laser device 1 and the heat dissipation device, the temperature of the laser device 1 is detected in real time through the second temperature sensor 10, and when the temperature T of the laser device 1 is reached2 real timeExceeding a set safety temperature TsafeAnd in the process, judging the over-safety temperature of the laser equipment 1, and stopping the laser equipment and the heat dissipation device.
Specifically, in the working process of the laser device 1 and the heat dissipation device, the flow at the inlet of the phase change heat exchanger 7 is detected in real time through the flow meter 9, and if the real-time flow value F at the inlet of the phase change heat exchanger 7 is detectedReal timeLess than a set minimum flow FminIf the flow of the heat dissipation device is insufficient, the laser equipment and the heat dissipation device are required to stop working.
Specifically, before the laser device 1 works, the flow of the heat transfer working medium at the inlet of the phase change heat exchanger 7 is detected, and when the flow value F at the inlet of the phase change heat exchanger 7 is smaller than the maximum value F of the set flowmaxIn the process, the flow at the inlet of the phase change heat exchanger 7 needs to be increased, namely, the flow value F at the inlet of the phase change heat exchanger 7 is increased by adjusting the flow regulating valve (valve) 5 until the flow value exceeds the maximum value F of the set flowmax。
Specifically, before the laser works (i.e. when the heat sink is started and the laser device 1 is not started), the temperature value T at the inlet of the cold plate 2 is measured1Minimum value T higher than set temperatureminWhen the heat dissipation device is in operation for a period of time, the heat dissipation device is cooled, and when the operation time t is greater than the set time tsetThen, if the temperature value T at the inlet of the cold plate 21The minimum value T still higher than the set temperatureminIf the heat dissipation capability of the heat dissipation device is not enough, the heat dissipation device needs to stop working, and the phase change heat exchanger needs to be replaced.
The working process of the present invention is further explained as follows:
firstly, before the field operation task is executed, the phase change heat exchanger 7 is subjected to cold accumulation treatment in a service site through a refrigerator, and the required phase change heat exchanger 7 is ensured to be solidified and has heat accumulation capacity. And connecting the ready phase-change heat exchanger 7 into a heat dissipation device through the quick connector 6, and testing the heat dissipation device to check whether the heat dissipation device works normally. After the heat dissipation device is detected and confirmed to normally operate, the heat dissipation device can be carried by a single person to go out of the station, and meanwhile, the other standby phase-change heat exchangers 7 are carried by other people to enter an emergency rescue site.
After entering the working place, the laser device 1 and the heat dissipation device are checked to ensure that the devices are normal. After the self-checking is completed, the starting operation can be performed, and the starting process is performed according to the flow in fig. 2. Step S102 is executed to start the power supply, and step S103 is executed to start the pump 4. After the pump 4 is started, step S104 is executed to detect the flow value and the temperature value of the heat dissipation device, that is, the temperature of the heat transfer medium at the inlet of the cold plate 2 is detected by the first temperature sensor 8, and the flow value of the heat transfer medium at the inlet of the phase change heat exchanger 7 is detected by the flowmeter 9. The temperature value T at the inlet of the cold plate 2 is determined in step S1051Whether or not less than the set minimum temperature TminIf the judgment result is negative, the temperature of the heat transfer working medium at the inlet of the cold plate 2 is higher, and the heat dissipation device needs to be cooled for a period of time after running. Therefore, step S106 is executed to determine whether the operation time t after the pump 4 is started is greater than the set time tsetIf the running time t after the pump is started is less than the set time tsetIf the cooling time of the heat sink is not enough, the process goes back to step S105. If the running time t after the pump is started is greater than the set time tsetAnd the temperature value T at the inlet of the cold plate 21Still greater than the set minimum temperature TminIf the phase change heat exchanger 7 in the heat sink loses its heat dissipation capability after completely absorbing heat and changing phase, the heat sink is turned off, and step S107 is executed to replace the phase change heat exchanger 7. After step S107 is completed, the process returns to step S101 to restart the heat dissipation device. The frequency of data acquisition, detection and judgment of the device is 10 Hz.
If the temperature value T at the inlet of the cold plate 2 is determined in step S1051Less than a set minimum temperature TminAnd judging that the temperature of the heat transfer working medium of the heat dissipation device is normal. Step S108 is executed, and if step S108 is executed, the flow value F at the inlet of the phase change heat exchanger 7 is smaller than the set maximum flow FmaxIf the flow rate of the heat transfer medium is small, step S is performed109, adjusting the valve 5 to increase the flow; when step S108 is executed, if the flow rate value F is greater than the set maximum flow rate FmaxIf the heat transfer medium flow of the heat dissipation device is normal, step S110 may be executed to turn on the laser device 1 to operate.
After the heat dissipation device and the laser device 1 are normally opened, the operation process of the heat dissipation device and the laser device 1 is performed according to the flow in fig. 3. The flow F at the inlet of the phase change heat exchanger 7 needs to be detected in real time during the operation of the heat sink and the laser device 1Real timeAnd the real-time temperature T at the inlet of the cold plate 21 real timeAnd executing step S202 to determine whether the flow value F is satisfiedReal timeGreater than a set minimum flow FminAnd T1 real timeLess than a set maximum temperature TmaxIf the condition is satisfied, the heat dissipation device works normally, step S203 is kept to be executed, the laser device 1 can keep working, step S204 is executed after the operation is completed, and the laser device 1 and the heat dissipation device are turned off. If the condition is not satisfied in executing step S202, the laser apparatus 1 is turned off. Subsequently, the state of the heat sink is detected, and the reason for the failure of the condition of step S202 is determined. Firstly, step S206 is performed to determine the real-time temperature T at the inlet of the cold plate 21 real timeWhether or not less than the set maximum temperature TmaxIf the real-time temperature T at the inlet of the cold plate 2 is1 real timeNormal, known as flow F at the inlet of the phase change heat exchanger 7Real timeLess than a set minimum flow FminIf the system is determined to be faulty, step S209 is executed to turn off the heat dissipation device. The real-time temperature T at the inlet of the cold plate 2 if step S206 is performed1 real timeGreater than a set maximum temperature TmaxThen the real-time temperature T at the inlet of the cold plate 2 is known1 real timeHigher, then the flow rate value F is judgedReal timeWhether it is greater than the set minimum flow FminStep S207 is executed, if the flow value FReal timeGreater than a set minimum flow FminThen the heat sink is turned off and the phase change heat exchanger 7 is replaced. If step S207 is executed, there is a flow value FReal timeLess than a set minimum flow FminIf so, judging the system fault and closing the heat dissipation device.
In the laser apparatus 1 and heat dissipationOnce T appears during the operation of the device2 real timeGreater than a set safety temperature TsafeThe laser and heat sink are turned off.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.

Claims (9)

1. A control method of a portable laser heat dissipation device is characterized by comprising the following steps:
step one, starting a heat dissipation device, not starting laser equipment, and detecting the temperature of a heat transfer working medium at an inlet of a cold plate and the flow of the heat transfer working medium at an inlet of a phase change heat exchanger;
if the temperature value T at the inlet of the cold plate1Below a set minimum temperature TminAnd the flow value F at the inlet of the phase change heat exchanger is larger than the set maximum flow FmaxIf so, judging that the heat dissipation device is started to work normally, and starting the laser equipment;
after the heat dissipation device and the laser equipment are normally started, detecting the temperature at the inlet of the cold plate and the heat transfer working medium flow at the inlet of the phase change heat exchanger in real time;
if the real-time temperature T at the entrance of the cold plate1 real timeLower than a set maximum temperature value TmaxAnd the flow rate at the inlet of the phase change heat exchanger is FReal timeGreater than a set minimum flow FminWhen the laser device works, the heat dissipation device works normally, and the laser device can keep working; otherwise, the laser device is turned off.
2. The method as claimed in claim 1, wherein in step one, if the temperature at the inlet of the cold plate is T, the temperature is measured1Above a set minimum temperature TminAnd the heat dissipation device needs to be cooled down after running for a period of time.
3. As claimed in claim 2The control method of the portable laser heat dissipation device is characterized in that the device to be cooled runs for a period of time, and when the running time t is greater than the set time tsetThen, if the temperature value T at the inlet of the cold plate1Still higher than the set minimum temperature TminIf the heat dissipation capability of the heat dissipation device is not enough, the heat dissipation device needs to be closed, and the phase change heat exchanger needs to be replaced.
4. The method as claimed in claim 1, wherein in the step one, if the flow value F at the inlet of the phase-change heat exchanger is less than the set maximum flow FmaxThen, the flow at the inlet of the phase change heat exchanger needs to be increased.
5. The method as claimed in claim 1, wherein in step two, if the real-time temperature T at the entrance of the cold plate is detected1 real timeLower than a set maximum temperature value TmaxBut real-time flow value F at inlet of phase-change heat exchangerReal timeLess than a set minimum flow FminIf so, judging the system fault and closing the heat dissipation device.
6. The method as claimed in claim 1, wherein in step two, if the real-time temperature T at the entrance of the cold plate is detected1 real timeExceeding a set maximum temperature value TmaxReal-time flow value F at the inlet of the phase change heat exchangerReal timeGreater than a set minimum flow FminAnd then the heat dissipation device is closed, and the phase change heat exchanger is replaced.
7. The method as claimed in claim 1, wherein in step two, if the real-time temperature T at the entrance of the cold plate is detected1 real timeExceeding a set maximum temperature value TmaxReal-time flow value F at the inlet of the phase change heat exchangerReal timeLess than a set minimum flow FminIf the system is in failure, the heat dissipation device is turned off。
8. The method as claimed in claim 1, wherein in step two, the temperature of the laser device is detected in real time, and when the temperature T of the laser device is reached2 real timeExceeding a set safety temperature TsafeAnd judging that the laser equipment exceeds the safe temperature, and closing the laser equipment and the heat dissipation device.
9. The method for controlling a portable laser heat sink according to any one of claims 1 to 8, wherein the heat sink comprises the cold plate, the expansion tank, the pump, the flow meter, the phase change heat exchanger connected in sequence;
the heat dissipation device also comprises a flow regulating valve, and an inlet and an outlet of the flow regulating valve are respectively connected with an outlet and an inlet of the pump and used for regulating the flow of the heat transfer working medium at the inlet of the phase change heat exchanger;
a first temperature sensor is arranged at the inlet of the cold plate;
the laser equipment is installed on the cold plate, and a second temperature sensor is arranged on the laser equipment.
CN202011251251.9A 2020-11-10 2020-11-10 Control method of portable laser heat dissipation device Active CN112269413B (en)

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