CN210326469U - Laser water-cooling temperature control system based on electronic expansion valve - Google Patents
Laser water-cooling temperature control system based on electronic expansion valve Download PDFInfo
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- CN210326469U CN210326469U CN201820481798.XU CN201820481798U CN210326469U CN 210326469 U CN210326469 U CN 210326469U CN 201820481798 U CN201820481798 U CN 201820481798U CN 210326469 U CN210326469 U CN 210326469U
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- electronic expansion
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Abstract
The utility model relates to a laser water-cooling temperature control system based on an electronic expansion valve, wherein the shell is internally provided with the electronic expansion valve, a temperature sensor and a processor, the electronic expansion valve is connected in series with a pipeline at a water inlet, and the temperature sensor is hidden in the shell of a laser rod; the output end of the temperature sensor is electrically connected with the input end of the processor, the output end of the processor is electrically connected with the controlled end of the electronic expansion valve, when the environment where the laser is located changes in temperature, the temperature in the laser rod can change accordingly, the temperature sensor sends the monitored temperature change situation to the processor in real time, the processor outputs corresponding voltage to the controlled end of the electronic expansion valve in real time according to the temperature change situation, so that the opening degree of the electronic expansion valve is changed, the water flow in the water cooling pipe can be changed due to the change of the opening degree of the electronic expansion valve, the cooling effect of the water cooling pipe can be changed, and therefore, only the opening degree of the electronic expansion valve is controlled, the constant temperature of the laser rod can be achieved, and the laser is not influenced by the change of the environment.
Description
Technical Field
The utility model relates to a laser technology, in particular to laser instrument water-cooling temperature control system based on electronic expansion valve.
Background
The laser device is a device which utilizes a stimulated radiation principle to enable laser to oscillate and emit from a laser rod, after the laser emits from the laser rod, pulse mode locking is firstly carried out through a Q switch so as to change the laser into pulse laser, when the pulse laser passes through a laser pump, spontaneous radiation is firstly generated under the action of the laser pump, the laser of the spontaneous radiation generates stimulated radiation when being transmitted in a laser gain medium of the laser pump, light amplification is generated, and then the laser emits out of the laser device through an output lens. In the process, because the laser rod can inevitably accumulate heat in the process of stimulated radiation, a water cooling pipe is additionally arranged on the laser rod, and the laser rod is cooled by water, but in the current water cooling pipe, the amount of water (water flow for short) entering the water cooling pipe in unit time is constant, and the water cooling pipe can only reduce the fixed temperature for the laser rod and cannot cope with the complex environment temperature change of a laser.
Disclosure of Invention
The utility model aims at: the hardware structure of the water-cooling temperature control system of the laser is provided, and after a software engineer programs a processor in the hardware structure, the laser can cope with the complex environmental temperature change of the laser.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
the laser water-cooling temperature control system comprises a shell, wherein a laser rod, a Q switch, a laser pump and an output lens are arranged in the shell in sequence along a light-emitting light path of the laser rod, a total reflection mirror is further arranged in the reverse direction of the light-emitting light path to reflect light back to the Q switch, a water-cooling pipe is further arranged in the shell and sleeved on a shell of the laser rod, the water-cooling pipe is provided with a water inlet and a water outlet, and pipelines extending out of the shell are sleeved on the water inlet and the water outlet respectively; an electronic expansion valve, a temperature sensor and a processor are also arranged in the shell, the electronic expansion valve is connected in series with a pipeline at the water inlet, and the temperature sensor is hidden in the shell of the laser rod; the output end of the temperature sensor is electrically connected with the input end of the processor, and the output end of the processor is electrically connected with the controlled end of the electronic expansion valve.
Wherein the temperature sensor is an NTC thermistor.
The processor is a singlechip with an ADC port, one end of the NTC thermistor is connected with the power supply end of the singlechip, and the other end of the NTC thermistor is connected with the ADC port of the singlechip.
Wherein, the water inlet is arranged at the top of the water-cooling pipe, and a pipeline on the water inlet vertically extends upwards out of the shell.
And the outer surface of the laser rod shell and/or the inner surface of the water-cooling pipe are/is coated with waterproof paint.
After the software engineer programs the treater in to the laser instrument, the utility model discloses a following beneficial effect can be realized to the laser instrument:
when the environment where the laser is located changes in temperature, the temperature in the laser rod also changes, the temperature sensor sends the monitored temperature change situation to the processor at the moment, the processor outputs corresponding voltage to the controlled end of the electronic expansion valve in real time according to the temperature change situation so as to change the opening degree of the electronic expansion valve, and the change of the opening degree of the electronic expansion valve can cause the water flow in the water cooling pipe to change, so that the cooling effect of the water cooling pipe can be changed, and the constant temperature of the laser rod can be realized only by controlling the opening degree of the electronic expansion valve, so that the laser is not influenced by the change of the environment temperature.
Drawings
Fig. 1 is a schematic structural diagram of the laser of the present invention.
Fig. 2 is a schematic diagram of the structure of the laser bar.
Fig. 3 is a diagram showing the electrical connection among the temperature sensor, the processor and the electronic expansion valve.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following embodiments and drawings are combined to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
See figure 1, the laser instrument includes the casing, is equipped with laser rod 2 in the casing, and laser is followed laser rod 2's light-emitting side and is jetted out, and on laser rod 2's light-emitting light path, its this light-emitting light path has set gradually Q switch 3, laser pumping 4, output lens 5, is equipped with the through-hole on the casing, and output lens 5 aims at the through-hole, and laser jets out from the through-hole. And a total reflection mirror 1 is also arranged in the reverse direction of the light-emitting light path, and the total reflection mirror 1 reflects the laser back to the Q switch 3.
Still be equipped with water-cooled tube 21 in the casing, water-cooled tube 21 cover is on the shell of laser stick 2, for the cooling of laser stick 2. The water cooling pipe 21 is provided with a water inlet 211 and a water outlet 212, wherein the water inlet 211 is arranged at the top of the water cooling pipe 21, the water inlet 211 is sleeved with a pipeline which vertically and upwardly extends out of the shell, and certain potential energy is accumulated under the action of gravity in the process that water flows through the pipeline, so that water has certain impulse when being filled into the water cooling pipe 21, and the water originally existing in the water cooling pipe 21 is extruded to the water outlet 212. The water outlet 212 is arranged at the bottom of the water cooling tube 21, and a pipeline on the water outlet 212 vertically extends downwards out of the shell, so that water is naturally discharged downwards under the action of gravity.
Referring to fig. 2 and 3, an electronic expansion valve 22, a temperature sensor 23 and a processor 24 are further disposed in the housing, and the electronic expansion valve 22 is connected in series to the pipe of the water inlet 211. The temperature sensor 23 is housed within the housing of the laser bar 2 so as to enable the temperature within the laser bar 2 to be collected to the processor 24. The processor 24 analyzes the laser rod 2 transmitted from the temperature sensor 23 in real time, if the temperature in the laser rod 2 rises, the processor 24 increases the voltage output to the controlled end of the electronic expansion valve 22, so that the opening degree of the electronic expansion valve 22 is increased, the water flow in the water cooling pipe 21 rises, the cooling effect of the water cooling pipe 21 is enhanced, and the temperature in the laser rod 2 is reduced; if the temperature in the laser rod 2 decreases, the processor 24 decreases the voltage output to the controlled end of the electronic expansion valve 22, so that the opening degree of the electronic expansion valve 22 decreases, the water flow in the water-cooling pipe 21 decreases, the cooling effect of the water-cooling pipe 21 decreases, and the temperature in the laser rod 2 increases.
In order to reduce the floor area of the temperature sensor 23 and make the volume of the laser rod 2 small, the temperature sensor 23 is selected as a NTC thermistor with small volume. Specifically, a single chip with an ADC port is selected as the processor 24, so that one end of the NTC thermistor is connected to the power supply end of the single chip, and the other end of the NTC thermistor is connected to the ADC port of the single chip. When the temperature rises, the resistance value of the NTC thermistor is reduced, the voltage reduction effect is weakened, and the voltage of the ADC port is increased to be detected by the single chip microcomputer; otherwise, the temperature is reduced, the resistance value of the NTC thermistor is increased, the voltage reduction effect is enhanced, and the voltage reduction of the ADC port can be detected by the single chip microcomputer.
A layer of waterproof coating is coated on the outer surface of the shell of the laser rod 2 and the inner surface of the water-cooling tube 21 to isolate water, so that the situation that the shell of the laser rod 2 and the water-cooling tube 21 are rusted due to direct contact of water is avoided. Among them, the waterproof coating is preferably a pure acrylic polymer emulsion.
It should be finally noted that the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced with other equivalents without departing from the spirit and scope of the technical solution of the present invention.
Claims (5)
1. A laser water-cooling temperature control system based on an electronic expansion valve comprises a shell, a laser rod, a Q switch, a laser pump and an output lens which are sequentially arranged along a light-emitting light path of the laser rod are arranged in the shell, a total reflector is further arranged in the reverse direction of the light-emitting light path to reflect light back to the Q switch,
the shell is internally provided with a water-cooling pipe, the water-cooling pipe is sleeved on the shell of the laser rod and is provided with a water inlet and a water outlet, and pipelines extending out of the shell are sleeved on the water inlet and the water outlet respectively;
the method is characterized in that:
an electronic expansion valve, a temperature sensor and a processor are also arranged in the shell, the electronic expansion valve is connected in series with a pipeline at the water inlet, and the temperature sensor is hidden in the shell of the laser rod;
the output end of the temperature sensor is electrically connected with the input end of the processor, and the output end of the processor is electrically connected with the controlled end of the electronic expansion valve.
2. The laser water-cooling temperature control system based on the electronic expansion valve as claimed in claim 1, wherein: the temperature sensor is an NTC thermistor.
3. The laser water-cooling temperature control system based on the electronic expansion valve as claimed in claim 2, wherein: the processor is a singlechip with an ADC port, one end of the NTC thermistor is connected with the power supply end of the singlechip, and the other end of the NTC thermistor is connected with the ADC port of the singlechip.
4. The laser water-cooling temperature control system based on the electronic expansion valve as claimed in claim 1, wherein: the water inlet is arranged at the top of the water-cooling pipe, and a pipeline on the water inlet vertically extends upwards out of the shell.
5. The electronic expansion valve-based laser water-cooling temperature control system of claim 4, wherein: and the outer surface of the laser rod shell and/or the inner surface of the water-cooling pipe are/is coated with waterproof paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820481798.XU CN210326469U (en) | 2018-04-08 | 2018-04-08 | Laser water-cooling temperature control system based on electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820481798.XU CN210326469U (en) | 2018-04-08 | 2018-04-08 | Laser water-cooling temperature control system based on electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210326469U true CN210326469U (en) | 2020-04-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820481798.XU Expired - Fee Related CN210326469U (en) | 2018-04-08 | 2018-04-08 | Laser water-cooling temperature control system based on electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210326469U (en) |
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2018
- 2018-04-08 CN CN201820481798.XU patent/CN210326469U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 Termination date: 20210408 |