An Adaptive Running Wide Temperature Control Vehicle-mounted Laser Temperature Control Device

Abstract

The present invention relates to the field of temperature control of vehicle-mounted lasers, and provides a temperature control device for vehicle-mounted lasers with wide temperature control in adaptive operation. The liquid supply unit includes two hot water tanks and one cold water tank. The temperature control pump forms a circulation loop by connecting in series one of the heat exchange channels of the second hot water tank and the temperature control plate heat exchanger through a pipeline; the inlet and outlet of the other heat exchange channel of the temperature control plate heat exchanger are respectively connected to the exhaust end of the compressor of the compression cycle refrigeration system and the input end of the condenser of the compression cycle refrigeration system through pipelines, and a circulation loop is formed. Through two hot water tanks with different temperatures and one cold water tank, and in cooperation with multiple electric proportional three-way valves, the supply of coolants with multiple different temperatures can be realized, meeting the usage requirements of different temperatures of multiple temperature control units within the laser load, and the liquid supply temperature range is wide.

Description

Technical Field

[0001] The present invention relates to the field of temperature control of vehicle-mounted lasers, and specifically to an adaptive operation wide-temperature-control vehicle-mounted laser temperature control device. Background Art

[0002] With the emergence of more and more vehicle-mounted lasers, higher and stricter requirements are put forward for the supporting temperature control devices. The temperature control device should have a relatively wide temperature control range to adapt to various temperature control module integrated lasers, and at the same time, it should be able to control the temperature with high precision to make the laser output effect optimal, so as to adapt to the continuous standby operation of the laser load under various working conditions such as no load, partial load, and full load, and meet the laser output requirements at any time.

[0003] The temperature control of each crystal, array, power supply, small load, etc. in the laser requires coolant with precise temperature, and the temperature control requirements of each part are different. At present, the supply temperature of the vehicle-mounted laser temperature control device is relatively single. Usually, there is a cold water tank and a hot water tank, and a coolant with a relatively narrow temperature range is provided through a proportional three-way valve. It cannot well meet the use requirements of complex laser systems. At the same time, there are many electrical equipment such as compressors, electric heaters, and circulation pumps in the temperature control device, resulting in large power consumption and having a negative impact on the continuous operation of the power load of many vehicle-mounted laser systems. Summary of the Invention

[0004] In order to meet the wide temperature control range of the vehicle-mounted laser system and the need for multiple temperature coolant supplies, and save the energy consumption of the system, the purpose of the present invention is to provide an adaptive operation wide-temperature-control vehicle-mounted laser temperature control device suitable for the normal operation of different temperature control modules in the laser.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] An adaptive operation wide-temperature-control vehicle-mounted laser temperature control device is composed of an indoor unit and an outdoor unit. A liquid supply unit and a control and protection unit are installed in the indoor unit, and an internal circulation unit and a heat dissipation unit are installed in the outdoor unit;

[0007] The heat dissipation unit includes a compression cycle refrigeration system and an air-cooled condenser arranged in parallel. The compression cycle refrigeration system includes a compressor, a fluorine solenoid valve, a condenser, a liquid storage tank, a filter, an expansion valve, and a plate heat exchanger connected in series in sequence to form a loop;

[0008] The liquid supply unit includes a first hot water tank, a cold water tank, multiple liquid supply pumps, multiple electric proportional three-way valves, a water filter, and a liquid supply pipeline connected to the multiple liquid supply pumps. A heater is installed in the hot water tank, and a liquid replenishing pump is connected to the cold water tank;

[0009] The internal circulation unit includes a circulation pump and a pipeline connecting the liquid supply unit and the heat dissipation unit;

[0010] The control and protection unit includes temperature, pressure, flow sensors, electric control cabinets and PDI control systems installed in each pipeline and unit;

[0011] The cold water tank forms a circulation with the air-cooled condenser and plate heat exchanger of the heat dissipation unit through a circulation pump and pipelines;

[0012] The cold water tank and the first hot water tank are respectively connected to the first electric proportional three-way valve through pipelines, the output ends of the first electric proportional three-way valve are respectively connected to the first liquid supply pump through pipelines, the output end of the first liquid supply pump is connected to the liquid distributor, and the liquid distributor delivers multiple cooling liquids to the load; after heat exchange, the multiple cooling liquids return to the first hot water tank through the liquid collector and the filter, and each pipeline of the liquid distributor is respectively installed with a flow sensor, a temperature sensor and a pressure sensor;

[0013] The liquid supply unit also includes a second hot water tank, a temperature control pump and a temperature control plate heat exchanger. The temperature control pump connects the second hot water tank and one of the heat exchange channels of the temperature control plate heat exchanger in series through a pipeline to form a circulation loop; the inlet and outlet of the other heat exchange channel of the temperature control plate heat exchanger are respectively connected to the exhaust end of the compressor of the compression cycle refrigeration system and the input end of the condenser of the compression cycle refrigeration system through pipelines to form a circulation loop;

[0014] The second hot water tank and the cold water tank are respectively connected to a plurality of electric proportional three-way valves via a plurality of pipes, and the output ends of the plurality of electric proportional three-way valves are respectively connected to a liquid supply pump, which delivers coolant to the load via the pipe; the coolant returned from the load is delivered to the second hot water tank via the pipe and the filter.

[0015] Furthermore, an electric proportional three-way valve is installed at the output end of the circulation pump, and the coolant in the cold water tank is respectively delivered to the plate heat exchanger and the air-cooled condenser through the electric proportional three-way valve.

[0016] Furthermore, the second hot water tank and the cold water tank form three-way cooling liquid outputs with three temperatures via three electric proportional three-way valves and three liquid supply pumps.

[0017] Furthermore, the output end of the first liquid supply pump is connected to the liquid distributor and a heating pipeline, and an external heater assembly is installed on the heating pipeline.

[0018] Furthermore, the first hot water tank and the second hot water tank are distributed on both sides of the cold water tank, and overflow ports connected to the cold water tank are provided on the tops of the first hot water tank and the second hot water tank.

[0019] Furthermore, the plate evaporator is connected to two parallel compression cycle refrigeration systems.

[0020] Further, it includes two air-cooled condensers arranged in parallel.

[0021] Further, the condenser is an air-cooled condenser.

[0022] After adopting the above technical solutions, the beneficial effects of the present invention are as follows:

[0023] 1. This technical solution sets two hot water tanks and one cold water tank. Through two hot water tanks with different temperatures and one cold water tank, and in cooperation with multiple electric proportional three-way valves, it is possible to supply liquid of multiple coolants with different temperatures, meeting the usage requirements of multiple temperature control units in the laser load at different temperatures, and the liquid supply temperature range is wide.

[0024] 2. The two hot water tanks generate hot water at a set temperature by means of electric heating. One of the hot water tanks exchanges heat with the high-temperature exhaust gas of the compressor through a temperature-controlled plate heat exchanger, recovering and utilizing the waste heat of the compressor, improving the energy utilization rate, and reducing the energy consumption of the device.

[0025] 3. The device can automatically switch between two working modes by detecting the ambient temperature. It switches to the conventional air-cooled working mode under low-temperature conditions, and switches to the compression refrigeration working mode under normal temperature and high temperature. Description of the Drawings

[0026] Figure 1 It is the left view of the indoor unit.

[0027] Figure 2 It is the right view of the indoor unit.

[0028] Figure 3 It is the front view of the outdoor unit.

[0029] Figure 4 It is the internal structure diagram of the outdoor unit.

[0030] Figure 5 It is the schematic diagram of the present invention.

[0031] In the figure: liquid supply unit 1, first hot water tank 11, second hot water tank 12, cold water tank 13, first liquid supply pump 14, second liquid supply pump 15, first electric proportional three-way valve 16, three second electric proportional three-way valves 17, liquid distributor 18, liquid collector 19, filter 10, control and protection unit 2, internal circulation unit 3, circulation pump 31, electric diversion three-way valve 32, heat dissipation unit 4, circulation refrigeration system 41, compressor 411, fluorine solenoid valve 412, condenser 413, liquid storage tank 414, filter 415, expansion valve 416, plate heat exchanger 417, air-cooled condenser 42, temperature-controlled plate heat exchanger 5, temperature control pump 6. Detailed Embodiments

[0032] The following further details the specific implementation manners of the present invention in conjunction with the accompanying drawings:

[0033] As shown in the figure, an adaptive operation wide-temperature-controlled vehicle-mounted laser temperature control device is composed of an indoor unit and an outdoor unit. The outdoor unit and the indoor unit are connected through pipes and cables. Inside the indoor unit, a liquid supply unit 1 and a control and protection unit 2 are installed. Inside the outdoor unit, an internal circulation unit 3 and a heat dissipation unit 4 are installed.

[0034] The liquid supply unit consists of a first hot water tank 11, a second hot water tank 12, a cold water tank 13, a first liquid supply pump 14, three second liquid supply pumps 15, a first electric proportional three-way valve 16, three second electric proportional three-way valves 17, a liquid distributor 18, a liquid collector 19 and pipes. Electric heaters, temperature sensors and liquid level sensors are respectively installed in the first hot water tank 11 and the second hot water tank 12, and the hot water temperatures in the first and second hot water tanks are different; temperature sensors, liquid replenishing devices, liquid level sensors, etc. are arranged in the cold water tank 13. The first hot water tank 11, the second hot water tank 12 and the cold water tank 13 are three independent chambers arranged side by side in the same overall box body, and there are gaps between the three independent chambers to prevent heat transfer. The cold water chamber 13 is located between the first hot water tank 11 and the second hot water tank 12, and the tops of the first hot water tank 11 and the second hot water tank 12 can overflow into the cold water tank.

[0035] The cold water tank 13 and the first hot water tank 11 are respectively connected to the first electric proportional three-way valve 16 by pipes. After the cold and hot water are adjusted to a suitable temperature by the first electric proportional three-way valve 16, they are sent to the liquid distributor 18 by the first liquid supply pump 14. The liquid distributor 18 distributes the cooled liquid with adjusted temperature to multiple crystal temperature control modules in the laser load in multiple paths, and the output temperature is controlled at 21°C ± 2°C. The coolant after heat exchange in the crystal temperature control module flows back to the liquid collector 19 through pipes, and returns to the second hot water tank 12 from the liquid collector 19 through the filter 10 to complete a cycle. The output end of the first liquid supply pump 14 outputs a separate path to the heating pipe through a three-way valve. The outside of the heating pipe is wrapped with an external heating component, and this heating pipe forms a separate path for the output of high-temperature coolant, and the output temperature is about 25°C, which is used for heat exchange of the power supply and small load in the laser.

[0036] The second hot water tank 12 and the cold water tank 13 are respectively connected to the three second electric proportional three-way valves 17 by pipes. The three second electric proportional three-way valves 17 respectively form three-way coolant outputs with three same or different temperatures by the three second liquid supply pumps 15, and the output range is 19°C - 27°C. These three-way coolants flow back to the second hot water tank 12 through the filter after heat exchange in the temperature control modules on the laser load panel. Since the cold water tank is constantly consuming coolant, when the liquid level is lower than the set value, the liquid replenishing device replenishes the cold water tank. When the liquid levels in the first hot water tank 11 and the second hot water tank 12 exceed due to the backflow, they overflow into the cold water tank 13.

[0037] The cold water temperature in the cold water tank 13 is generally set at 15 - 17 °C, the temperature in the first hot water tank 11 is set at 23 - 25 °C, and the temperature in the second hot water tank 12 is generally set at 27 - 30 °C. The cold water in the cold water tank needs to reach the set value, and the cooling of the cold water in the cold water tank is achieved by using a heat dissipation unit in this technical solution. According to the needs of the load, the heat dissipation unit 4 in this technical solution consists of a set of compression cycle refrigeration system 41 and a set of air-cooled condensers 42. The compression cycle refrigeration system 41 is a conventional refrigerant compression refrigeration system, which consists of a compressor 411, a fluorine solenoid valve 412, a condenser 413, a liquid storage tank 414, a filter 415, an expansion valve 416, and a plate heat exchanger 417 connected in series in turn to form a loop, and conventional temperature, pressure sensors and other accessories are installed; the cold water tank 13 sends the cooling water to the plate heat exchanger 417 and the air-cooled condenser 42 respectively through the circulating pump 31 of the internal circulation unit 3, forming two cooling methods of air-cooled heat exchange and refrigerant heat exchange until the cold water in the cold water tank 13 is cooled to the set temperature. An electric diversion three-way valve 32 is installed at the output end of the circulating pump 31 to control the cooling method of the cooling water in the cold water tank 13 through the diversion three-way valve 32.

[0038] Since there is continuous liquid return replenishment in the second hot water tank, it is difficult to maintain a high temperature inside it, unless a high-power electric heater is used. In this technical solution, a temperature-controlled plate heat exchanger 5 is provided. The two ends of one heat exchange channel of the temperature-controlled plate heat exchanger 5 are connected to the exhaust port of the compressor 411 and the front end of the inlet of the condenser 413, and the other heat exchange channel is circulated into the hot water in the second hot water tank 12 through a temperature-controlled pump 6. By raising the temperature of the hot water in the second hot water tank 12 with the high-temperature exhaust gas in the compressor 411, the use frequency of the electric heater is reduced, and the energy consumption is reduced.

[0039] The control and protection unit 2 includes temperature, pressure, and flow sensors installed in each pipeline and unit, an electric control cabinet, and a PDI control circuit. The PDI control system collects the data of each sensor and controls the actions of actuators such as electric heaters, circulating pump 31, compressor 411, electric proportional three-way valve, air-cooled condenser 42, etc. according to the set program to achieve precise control and adaptive operation. By monitoring the temperature of the cold and hot water tanks and the pressure value of the condensation pressure sensor, the number of air-cooled condensers 42, compressors 411, and electric heaters is adaptively turned on to stabilize the coolant temperature of the cold and hot water tanks and adapt to the working conditions of full load operation, partial load operation, and no-load operation of the laser. The automatic switching between two working modes is carried out by detecting the ambient temperature through the ambient temperature sensor installed on the external machine. In the low-temperature working condition, it is switched to the conventional air-cooled working mode, and in the normal temperature and high-temperature conditions, it is switched to the compression refrigeration working mode.

Claims

1. An adaptive operation wide-temperature-controlled vehicle-mounted laser temperature control device, which consists of an indoor unit and an outdoor unit. A liquid supply unit and a control and protection unit are installed in the indoor unit, and an internal circulation unit and a heat dissipation unit are installed in the outdoor unit. The indoor unit and the outdoor unit are connected through pipes and cables; The heat dissipation unit includes a compression cycle refrigeration system and an air-cooled condenser arranged in parallel. The compression cycle refrigeration system includes a compressor, a fluorine solenoid valve, a condenser, a liquid storage tank, a filter, an expansion valve, and a plate heat exchanger connected in series in turn to form a loop; The liquid supply unit includes a first hot water tank, a cold water tank, multiple liquid supply pumps, multiple electric proportional three-way valves, a water filter, and a liquid supply pipe connected to the multiple liquid supply pumps. A heater is installed in the first hot water tank, and a liquid replenishing pump is connected to the cold water tank; The internal circulation unit includes a circulation pump and a pipe connecting the liquid supply unit and the heat dissipation unit; The control and protection unit includes temperature, pressure, and flow sensors installed in each pipeline and unit, an electric control cabinet, and a PDI control system; The cold water tank forms a circulation with the air-cooled condenser and the plate heat exchanger of the heat dissipation unit respectively through the circulation pump and the pipe; The cold water tank and the first hot water tank are respectively connected to a first electric proportional three-way valve through pipes. The output ends of the first electric proportional three-way valve are respectively connected to a first liquid supply pump through pipes. The output end of the first liquid supply pump is connected to a distributor, and the distributor conveys multiple paths of cooling liquid to the load; After the multiple paths of cooling liquid are heat-exchanged, they return to the first hot water tank through a liquid collector and a filter. Flow sensors, temperature sensors, and pressure sensors are respectively installed on each pipe of the distributor; The liquid supply unit further includes a second hot water tank, a temperature control pump, and a temperature control plate heat exchanger. The temperature control pump connects one heat exchange channel of the second hot water tank and the temperature control plate heat exchanger in series through a pipe to form a circulation loop; The inlet and outlet of the other heat exchange channel of the temperature control plate heat exchanger are respectively connected to the exhaust end of the compressor of the compression cycle refrigeration system and the input end of the condenser of the compression cycle refrigeration system through pipes and form a circulation loop; The second hot water tank and the cold water tank are respectively connected to multiple electric proportional three-way valves through multiple pipes. The output ends of the multiple electric proportional three-way valves are respectively connected to liquid supply pumps. The liquid supply pumps convey cooling liquid to the load through pipes; The cooling liquid returned from the load is sent to the second hot water tank through a pipe and a filter; An electric proportional three-way valve is installed at the output end of the circulation pump. The cooling liquid in the cold water tank is respectively sent to the plate heat exchanger and the air-cooled condenser through the electric proportional three-way valve; The second hot water tank and the cold water tank form three-way outputs of three cooling liquids at three temperatures through three electric proportional three-way valves and three liquid supply pumps.

2. The temperature control device for an in-vehicle laser with adaptive operation and wide temperature control according to claim 1, characterized in that, The output end of the first liquid supply pump is connected to the distributor and a heating pipeline, and an external heater assembly is installed on the heating pipeline.

3. An adaptive operation wide-temperature control vehicle-mounted laser temperature control device according to claim 1, characterized in that The first hot water tank and the second hot water tank are distributed on both sides of the cold water tank, and overflow ports connecting to the cold water tank are provided at the tops of the first hot water tank and the second hot water tank.

4. An adaptive operation wide-temperature-controlled vehicle-mounted laser temperature control device according to claim 1, characterized in that, It includes two air-cooled condensers arranged in parallel.

5. An adaptive operation wide-temperature-controlled vehicle-mounted laser temperature control device according to claim 1, characterized in that, The condenser is an air-cooled condenser.

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