CN218513861U - Laser equipment and its cooling system - Google Patents

Abstract

The utility model relates to the technical field of laser processing, and discloses a laser device and a cooling system thereof, wherein the cooling system comprises a laser module, a master control module, a compressor, a condenser, a refrigerant plate, a heat exchange device, a water pump, a water tank and a laser processing head; the refrigerant plate is hermetically arranged in the laser module, the heat exchange device is arranged in the water tank, and the compressor, the condenser, the refrigerant plate and the heat exchange device are connected in series through a first pipeline to form a first cooling loop; a cooling water channel is arranged in the laser processing head, and the water pump, the water tank and the laser processing head are connected in series through a second pipeline to form a second cooling loop; the cooling system further comprises a first bypass device connected to the first cooling circuit by a third pipe to form a first bypass branch, and the first bypass device is connected to the output of the compressor.

Description

Laser equipment and its cooling system

【Technical field】

The embodiment of the utility model relates to the technical field of laser processing, in particular to a laser device and a cooling system thereof.

【Background technique】

In recent years, with the rapid development of the national industry, more and more fiber laser manufacturers have begun to invest in advanced technology/sufficient funds to develop more and higher power multi-module continuous fiber lasers. The internal cooling of existing lasers is mostly water-cooled. Since the water cooling must be continuously circulated through the water cooler and the water tank to dissipate heat for the water cooling plate, and most of the current water coolers and water tanks are placed outside the laser, the laser must be fixed and cannot be moved, and it will increase the laser. size and space.

The application number is "CN201020643230.7", and the Chinese patent titled "YAG laser integrated dual-circulation cooling device" discloses a YAG laser integrated dual-circulation cooling device, including: a condenser, which dissipates heat for the condenser Fan, air compressor, spiral evaporator, first capillary, water storage tank, water pump, laser; among them, the condenser, fan, air compressor, spiral evaporator, and first capillary form an external circulation cooling system; The water storage tank, the water pump, and the laser form a set of internal circulation cooling system; the external circulation cooling system is used to cool the internal circulation water in the internal circulation cooling system, and the internal circulation water in the internal circulation cooling system is used to cool the laser. The internal circulation cooling system and the external circulation cooling system are integrated into an integrated structure, installed in the laser equipment, and the refrigeration control and laser control are integrated together, realizing the integration and miniaturization of the laser equipment.

However, the integrated double-circulation cooling device in this patent is only suitable for small and medium power lasers, and the cooling mode is to cool the internal circulation water in the internal circulation cooling system through the external circulation cooling system, and the internal circulation in the internal circulation cooling system Water is used to cool the laser; the cooling mode is single, and this cooling mode only uses water cooling to dissipate heat from the laser, and the cooling efficiency is low. As the power of the laser increases, the volume, weight and power consumption of the chiller must increase. In order to meet the heat dissipation requirements of the laser; at the same time, the heat conduction efficiency per unit area of the cold water plate cannot meet the high-density heat conduction requirements of the laser pump source, resulting in a high actual pump temperature, and cannot guarantee the electro-optical conversion wavelength of the pump source Certainty. At high temperatures, the laser becomes less efficient or stops working.

【Content of utility model】

The purpose of this utility model embodiment is to provide a cooling system for laser equipment. The cooling system can operate in multiple working modes. The laser module can dissipate heat through the refrigerant plate of the refrigerant refrigeration system, and perform heat exchange with the water cooling system. Through the water cooling system Heat dissipation for the laser processing head improves the efficiency of cooling and heat dissipation.

The utility model solves its technical problem and adopts the following technical solutions:

A cooling system for laser equipment, including a laser module, a main control module, a compressor, a condenser, a refrigerant plate, a heat exchange device, a water pump, a water tank and a laser processing head;

The refrigerant plate is sealed in the laser module, the heat exchange device is installed in the water tank, and the compressor, condenser, refrigerant plate and heat exchange device are connected in series through a first pipeline to form a first cooling circuit ;

The laser processing head is provided with a cooling water channel, and the water pump, the water tank and the laser processing head are connected in series through a second pipeline to form a second cooling circuit;

The cooling system also includes a first bypass device connected to the first cooling circuit through a third pipe to form a first bypass branch, and the first bypass device is connected to on the output of the compressor.

As a preferred solution, the first bypass device is a plate heat exchanger, and the plate heat exchanger is provided with a first input port and a first output port, as well as a second input port and a second output port;

The first input port and the first output port are respectively connected to the output end of the compressor and the input end of the condenser through the third pipeline to form the first bypass branch, and the compressor A first solenoid valve is also provided on the first pipeline between the output end of the condenser and the input end of the condenser;

The second input port and the second output port are respectively connected to the output end of the refrigerant plate and the input end of the heat exchange device through the first pipe.

As a preferred solution, the first bypass device is a first capillary tube, and the two ends of the first capillary tube are respectively connected to the output end of the compressor and the input end of the heat exchange device through the third pipeline, The first bypass branch is formed, and a second electromagnetic valve is also arranged on the first bypass branch.

As a preferred solution, the cooling system further includes an expansion valve, the expansion valve is connected in series between the condenser and the refrigerant plate, and the expansion valve is electrically connected to the main control module.

As a preferred solution, the refrigerant cooling system further includes a liquid storage tank, and the liquid storage tank is connected in series between the condenser and the refrigerant plate.

As a preferred solution, the cooling system further includes a second bypass device, the second bypass device is connected in parallel to the input end and the output end of the condenser through a third pipeline to form a second bypass branch, so A third solenoid valve is also provided on the second bypass branch.

As a preferred solution, the second bypass device is a second capillary, and the two ends of the second capillary are respectively connected to the input end and the output end of the condenser through a third pipe.

As a preferred solution, a first pressure sensor and a second pressure sensor are respectively provided at the input end and the output end of the compressor, and both the first pressure sensor and the second pressure sensor are electrically connected to the main control module.

As a preferred solution, a first temperature sensor and a second temperature sensor are respectively provided in the refrigerant plate and the water tank, and both the first temperature sensor and the second temperature sensor are electrically connected to the main control module.

The utility model also provides a laser device, including the cooling system of any one of the above schemes, wherein the main control module, compressor, condenser, fan, water pump and water tank are all arranged in the cabinet of the laser device.

The beneficial effects of the utility model are: the first cooling circuit of the cooling system adopts refrigerant direct cooling and the second cooling circuit adopts water cooling, and the two cooling schemes are combined to realize multiple working modes, and the laser module is cooled and dissipated through the refrigerant plate, which is relatively Compared with the traditional water cooling scheme, the cooling efficiency is higher, the cooling temperature is lower, and the heat generated inside the laser module can be quickly taken away, and the heat dissipation efficiency is higher; the refrigerant provided by the refrigerant cooling system cools the laser module and dissipates heat. The cooling water of the water cooling system performs cooling and heat dissipation, which improves the cooling efficiency of the cooling system and simplifies the structural layout of the cooling system.

Moreover, the first bypass branch is set in the cooling system, which solves the problem that when the laser equipment switches to the normal working state or the high-load state, the compressor and the fan can quickly increase to the same frequency as the original frequency. The matching frequency of laser equipment when working under high load. Therefore, the matching time of the frequency conversion of the compressor is shortened, and the frequency matching speed of the compressor is improved when the laser equipment is running under high load.

【Description of drawings】

One or more embodiments are exemplified by the corresponding drawings, and these exemplifications are not construed as limiting the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified Note that the drawings in the drawings are not limited to scale.

Fig. 1 is the schematic diagram of the cabinet of the laser equipment of an embodiment of the present utility model;

Fig. 2 is a schematic diagram of the principle of the cooling system of the laser equipment according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the principle of the cooling system of the laser equipment according to another embodiment of the present invention;

Fig. 4 is a schematic diagram of the principle of the cooling system of the laser equipment in another embodiment of the present invention;

Fig. 5 is a schematic diagram of the principle of a cooling system of a laser device according to another embodiment of the present invention;

FIG. 6 is a system diagram of a control module of a cooling system of a laser device according to an embodiment of the present invention.

【Detailed ways】

In order to facilitate the understanding of the utility model, the utility model will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as being “fixed on”/“fixed on”/“installed on” another element, it may be directly on the other element, or there may be one or more intervening elements therebetween. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions are used in this specification for the purpose of description only.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terms used in the description of the utility model are only for the purpose of describing specific embodiments, and are not used to limit the utility model. The term "and/or" used in this specification includes any and all combinations of one or more of the associated listed items.

In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in Figures 1 to 5, the embodiment of the present invention provides a cooling system for laser equipment, wherein the laser equipment includes a cabinet 1, a laser processing head 2, a laser module 3 and a cooling system; wherein the laser module 3 The cooling system and the cooling system are all arranged in the cabinet 1 to realize the integrated design and layout of the cooling system and the laser module 3 .

Wherein, the cooling system includes a laser module 3, a main control module (not marked), a compressor 5, a condenser 6, and a sealed refrigerant plate 7 arranged in the laser module 3 and a refrigerant formed by a fan 8 for cooling and dissipating the condenser 6 Cooling System. The compressor 5 is a frequency conversion compressor, and the fan 8 is a frequency conversion EC fan.

And, the water cooling system formed by the water pump 9, the water tank 10 and the cooling water channel arranged in the laser processing head 2; The device performs heat exchange, and the cooling water in the water tank 10 is cooled and dissipated by the refrigerant produced by the refrigerant refrigeration system.

The interior of the cabinet 1 is divided into an independent first storage room 101 and a second storage room 102. The main control module, compressor 5, condenser 6, fan 8, water pump 9 and water tank 10 are all arranged in the first storage room 101. , the laser module 3 is disposed in the second accommodation chamber 102 . Since the first storage chamber 101 and the second storage chamber 102 are independent spaces, the main control module and the laser module 3 are designed separately, so as to facilitate separate cooling of the laser module 3 and the main control module using different cooling schemes.

Specifically, the refrigerant plate 7 is sealed in the laser module 3, the heat exchange device is arranged in the water tank 10, the compressor 5, the condenser 6, the refrigerant plate 7 and the heat exchange device pass through the first Pipes (not shown) are connected in series to form a first cooling circuit.

The laser processing head 2 is provided with a cooling water channel, and the water pump 9, the water tank 10 and the laser processing head 2 are connected in series through a second pipeline (not marked) to form a second cooling circuit.

The cooling system also includes a first bypass device connected to the first cooling circuit through a third pipe (not marked) to form a first bypass branch, and the first A bypass device is connected to the output of the compressor 5 .

As shown in Figure 2, the direction indicated by the arrow in the figure is the direction in which the cooling medium flows. The cooling medium includes refrigerant and cooling water. The first bypass device is a plate heat exchanger 11, and the plate heat exchanger 11 is provided with a first An input port and a first output port, and a second input port and a second output port.

The first input port and the first output port of the plate heat exchanger 11 are respectively connected to the output end of the compressor 5 and the input end of the condenser 6 through the third pipeline to form the first bypass branch, A first solenoid valve 12 is also provided on the first pipeline between the output end of the compressor 5 and the input end of the condenser 6 .

The second input port and the second output port of the plate heat exchanger 11 are respectively connected to the output end of the refrigerant plate 7 and the input end of the heat exchange device through the first pipe.

When the laser equipment is in a normal working state, the main control module controls the first electromagnetic valve 12 to open. At this time, the entire first bypass branch is short-circuited, so that the refrigerant circulates in the first cooling circuit. The compressor 5 is a variable frequency compressor, and the compressor 5 works to compress the refrigerant to become a high-temperature and high-pressure gas refrigerant. The high-temperature and high-pressure gas refrigerant flows through the condenser 6 along the first pipeline, and is exchanged with the environment through the condenser 6 and the fan 8. Heat exchange, so that the high-temperature and high-pressure gas refrigerant becomes a low-temperature and low-pressure liquid refrigerant, and the low-temperature and low-pressure liquid refrigerant flows through the refrigerant plate 7, and dissipates heat to the heating element in the laser module 3 through the refrigerant plate 7, and then the low-temperature refrigerant that flows out from the refrigerant plate 7 The low-pressure liquid refrigerant flows through the heat exchange device in the water tank 10 again, and the heat exchange device can be a plate heat exchanger, for example, and exchanges heat with the cooling water in the water tank 10 by the heat exchange device, and the cooling water in the water tank 10 carries out heat exchange. Cool and dissipate heat, and finally the liquid refrigerant flowing out from the heat exchange device flows back into the compressor 5 again, and is compressed again by the compressor 5, so that the cycle reciprocates.

The cooling water in the water tank 10 is powered by the water pump 9, so that the cooling water circulates in the second cooling circuit, and the cooling water flows out from the water tank 10 and flows into the cooling water channel in the laser processing head 2 along the second pipeline to provide laser The processing head 2 is cooled and dissipated, and then the cooling water flows out from the cooling channel in the laser processing head 2, and flows back to the water tank 10 through the second pipe, so that the cycle reciprocates.

Preferably, the cooling system further includes an expansion valve 13, which is connected to the first cooling system and connected in series between the condenser 6 and the refrigerant plate 7, and the expansion valve 13 is electrically connected to the main control module. The expansion valve 13 throttles the refrigerant flowing out of the condenser 6 according to the control command of the main control module, so that the refrigerant becomes a low-temperature and low-pressure liquid refrigerant and flows into the refrigerant plate 7 to cool and dissipate the laser module 3 .

Preferably, the cooling system also includes a liquid storage tank 14, which is connected to the first cooling system and connected in series between the condenser 6 and the refrigerant plate 7, and the liquid storage tank 14 is used to store the liquid from the condenser 6 The excess low-temperature and low-pressure refrigerant flowing out of the For example, when the laser equipment operates in winter, when the outdoor temperature is relatively low, the refrigerant generated in the cooling system is excessive, and the redundant low-temperature and low-pressure refrigerant can be stored in the liquid storage tank 14 at this time.

When the laser equipment is in a standby state or a low-load state, the main control module controls the first solenoid valve 12 to close, at this time the first bypass branch is connected, and the first bypass device (plate heat exchanger 11) is replaced by the first bypass device (plate heat exchanger 11). The three pipelines are connected in series to the first cooling circuit, and the high-temperature and high-pressure gas refrigerant flowing out from the compressor 5 first flows into the first bypass device (plate heat exchanger 11) through the third pipeline, and the high-temperature and high-pressure gas refrigerant is in the The plate heat exchanger 11 exchanges heat with the low-temperature and low-pressure liquid refrigerant flowing out of the refrigerant plate 7 , and then flows into the condenser 6 after flowing out of the plate heat exchanger 11 .

The high-temperature and high-pressure gas refrigerant exchanges heat with the environment through the condenser 6 and the fan 8, so that the high-temperature and high-pressure gas refrigerant becomes a low-temperature and low-pressure liquid refrigerant. The heating element in 3 dissipates heat, and then the low-temperature and low-pressure liquid refrigerant flowing out from the refrigerant plate 7 flows through the heat exchange device in the water tank 10. The heat exchange device can be a plate heat exchanger, for example, through the heat exchange device and the The cooling water is used for heat exchange, and the cooling water in the water supply tank 10 is used for cooling and heat dissipation. Finally, the liquid refrigerant flowing out of the heat exchange device flows back into the compressor 5 and is compressed again by the compressor 5, thus reciprocating.

Since the laser equipment is in a standby state or a low-load state operation, the first bypass branch is connected, and the operation of the first bypass device (plate heat exchanger 11) in the first bypass branch will increase the compressor 5 and The working load of the fan 8 increases the frequency of the compressor 5 and the fan 8 and maintains them within a certain frequency range. In this way, when the laser equipment is switched to normal operation or high-load operation, the compressor 5 and fan 8 can quickly increase to the frequency matching the high-load operation of the laser equipment on the basis of the original frequency. Therefore, the matching time of the frequency conversion of the compressor 5 is shortened, and the frequency matching speed of the compressor 5 is improved when the laser equipment operates under high load.

As shown in Figure 3, in other embodiments, the first bypass device can also be a first capillary tube 15, and the two ends of the first capillary tube 15 are respectively connected to the output end of the compressor 5 through the third pipeline. It is connected with the input end of the heat exchange device to form the first bypass branch, and a second solenoid valve 16 is also arranged on the first bypass branch.

When the laser equipment is in a normal working state, the main control module controls the second electromagnetic valve 16 to close. At this time, the entire first bypass branch is short-circuited, so that the refrigerant circulates in the first cooling circuit. The compressor 5 is a variable frequency compressor, and the compressor 5 works to compress the refrigerant to become a high-temperature and high-pressure gas refrigerant. The high-temperature and high-pressure gas refrigerant flows through the condenser 6 along the first pipeline, and is exchanged with the environment through the condenser 6 and the fan 8. Heat exchange, so that the high-temperature and high-pressure gas refrigerant becomes a low-temperature and low-pressure liquid refrigerant, and the low-temperature and low-pressure liquid refrigerant flows through the refrigerant plate 7, and dissipates heat to the heating element in the laser module 3 through the refrigerant plate 7, and then the low-temperature refrigerant that flows out from the refrigerant plate 7 The low-pressure liquid refrigerant flows through the heat exchange device in the water tank 10 again, and the heat exchange device can be a plate heat exchanger, for example, and exchanges heat with the cooling water in the water tank 10 by the heat exchange device, and the cooling water in the water tank 10 carries out heat exchange. Cool and dissipate heat, and finally the liquid refrigerant flowing out from the heat exchange device flows back into the compressor 5 again, and is compressed again by the compressor 5, so that the cycle reciprocates.

When the laser equipment is in the standby state or the low-load state, the main control module controls the second electromagnetic valve 16 to open, at this time the first bypass branch is connected, and the high-temperature and high-pressure gas refrigerant flowing out of the compressor 5 is divided into Two paths, the high-temperature and high-pressure gas refrigerant of one path exchanges heat with the environment through the condenser 6 and the fan 8, so that the high-temperature and high-pressure gas refrigerant becomes a low-temperature and low-pressure liquid refrigerant, and the low-temperature and low-pressure liquid refrigerant flows through the refrigerant plate 7 and passes through The cooling medium plate 7 dissipates heat to the heating element in the laser module 3, and then the low-temperature and low-pressure liquid refrigerant flowing out from the cooling medium plate 7 flows through the heat exchange device in the water tank 10. The heat exchange device can be a plate heat exchanger for example. The device exchanges heat with the cooling water in the water tank 10, and uses the cooling water in the water tank 10 to cool and dissipate heat. Finally, the liquid refrigerant flowing out of the heat exchange device flows back into the compressor 5 and is compressed again by the compressor 5. reciprocating cycle. The high-temperature and high-pressure gas refrigerant in the other path flows into the first bypass branch, and flows back to the heat exchange device in the water tank 10 from the first bypass device (first capillary tube 15 ).

Since the laser equipment is in standby or low-load operation, the first bypass branch is connected, and the operation of the first bypass device (first capillary 15) in the first bypass branch will increase the number of compressors 5 and fans. 8, the frequency of compressor 5 and fan 8 is increased and maintained within a certain frequency range. In this way, when the laser equipment is switched to normal operation or high-load operation, the compressor 5 and fan 8 can quickly increase to the frequency matching the high-load operation of the laser equipment on the basis of the original frequency. Therefore, the matching time of the frequency conversion of the compressor 5 is shortened, and the frequency matching speed of the compressor 5 is improved when the laser equipment operates under high load.

As shown in Figure 4 and Figure 5, the cooling system also includes a second bypass device, which is connected in parallel to the input end and the output end of the condenser 6 through a third pipeline to form a second bypass branch. A third electromagnetic valve 25 is also provided on the second bypass branch.

Preferably, the second bypass device is a second capillary tube 24, and the two ends of the second capillary tube 24 are respectively connected to the input end and the output end of the condenser 6 through a third pipeline.

When the laser equipment is operating in a low-temperature or ultra-low temperature environment (such as an environment of -20°C to 5°C), the third solenoid valve 25 is opened, and a part of the high-temperature and high-pressure gas refrigerant output from the compressor 5 in the first cooling circuit will pass through The opened third solenoid valve 25 flows into the second bypass branch, and after being throttled by the second bypass device (second capillary 24), it flows back into the first cooling circuit and the low-temperature and low-pressure flow out of the condenser 6. The liquid refrigerants are combined, then flow through the liquid storage tank 14 and the expansion valve 13, then flow into the refrigerant plate 7, and finally flow back to the compressor 5, and the cycle repeats. Therefore, the temperature of the low-temperature and low-pressure liquid refrigerant in the first cooling circuit is slightly increased, which can solve the problem that the condenser 6 is affected by the low-temperature and ultra-low-temperature environment, and the excessive cooling of the condenser 6 causes the fan 8 to start and stop frequently, making the condensation temperature of the cooling system unstable. Causes problems with large pressure fluctuations in the cooling system.

In the above embodiments, the first pipe and the third pipe are both copper pipes or aluminum pipes, and the second pipe is a plastic pipe that can be used to transport cooling water.

In addition, the fourth solenoid valve 17 and the fifth solenoid valve 18 can be respectively installed at the input end and the output end of the refrigerant plate 7, and the opening and closing of the fourth solenoid valve 17 and the fifth solenoid valve 18 can be controlled by the main control module to control the cooling medium. The timing of flowing in or out of the refrigerant plate 7 realizes the controllability of the refrigerant flowing in the first cooling circuit.

As shown in Figure 6, wherein, main control module comprises laser main control board 41, cooling system control board 42, power supply module 43 and pumping source driver 44 and compressor driver 45, laser main control board 41 and cooling system control board respectively 42. The power supply module 43 is electrically connected to the pump source driver 44, and the cooling system control board 42 is electrically connected to the compressor driver 45. The laser main control board 41 is used as the main control center of the laser, and is used to control the normal operation of the cooling system and the laser module 3, wherein, the compressor 5, the fan 8, the water pump 9, the first electromagnetic valve 12, the second electromagnetic valve 16, The third solenoid valve 25 , the fourth solenoid valve 17 and the fifth solenoid valve 18 are all electrically connected to the cooling system control board 42 , and the cooling system control board 42 is used to receive control instructions from the laser main control board 41 to control the operation of the cooling system.

The control module integrates all the control devices that control the operation of the laser in a control box, and controls the operation of the cooling system and the laser module 3 through the main control board 42 of the laser, which improves the integration of laser control and is conducive to optimizing the control layout of the laser. Simplify the internal structure of the laser and reduce the volume of the laser. At the same time, the integrated design of the control module also facilitates the maintenance and assembly of the control module.

As shown in FIG. 2 , in the refrigerant cooling system, an expansion valve 13 is connected between the refrigerant plate 7 and the condenser 6 , and the expansion valve 13 is also electrically connected to the cooling system control board 42 . The expansion valve 13 throttles the refrigerant flowing out of the condenser 6 according to the control command of the cooling system control board 42, so that the refrigerant becomes a low-temperature and low-pressure liquid refrigerant and flows into the refrigerant plate 7 to cool and dissipate the laser module 3 .

The input end and the output end of the compressor 5 are provided with a first pressure sensor 19 and a second pressure sensor 20 respectively, and both the first pressure sensor 19 and the second pressure sensor 20 are electrically connected to the cooling system control board 42 . In this embodiment, the compressor 5 is an inverter compressor, and the pressure data collected by the first pressure sensor 19 and the second pressure sensor 20 are fed back to the cooling system control board 42 in real time, and the cooling system control board 42 sends a control command according to the feedback data To the compressor 5, so that the compressor 5 works according to the instruction to maintain the pressure of the cooling system, so as to ensure that the refrigerant refrigeration system can provide cooling conditions that meet the requirements according to the working state of the laser.

In addition, a first temperature sensor 21 is provided on the refrigerant plate 7, and the first temperature sensor 21 is electrically connected to the laser main control board 41. A second temperature sensor 22 is provided in the water tank 10, and the second temperature sensor 21 is connected to the cooling system control board 42. electrical connection. The first temperature sensor 21 is used to monitor the temperature of the refrigerant plate 7 in real time, and feeds back the temperature data to the laser main control board 41, and the laser main control board 41 sends control instructions to the cooling system control board 42 according to the received temperature data, and the cooling system The control board 42 issues execution commands to the compressor 5 and the fan 8 according to the received control commands, so that the temperature of the circulating refrigerant in the refrigerant cooling system meets the cooling and heat dissipation requirements of the laser module 3, and realizes automatic adjustment of the refrigerant temperature.

Similarly, the second temperature sensor 22 is used to monitor the temperature of the cooling water in the water tank 10, and feeds back the temperature data to the cooling system control board 42, and the cooling system control board 42 sends execution instructions to the compressor according to the received temperature data. The machine 5 and the blower 8 work, so that after the heat exchange device exchanges heat with the cooling water in the water tank 10, the temperature of the circulating cooling water in the water cooling system meets the cooling and heat dissipation requirements of the laser processing head 2, and the automatic adjustment of the cooling water temperature is realized. .

In addition, a heating device 23 is also provided in the water tank 10. The heating device 23 can preheat the cooling water in the water tank 10 when the outdoor environment is too low in winter, so as to avoid freezing due to the low temperature of the cooling water in the water tank 10. , or cause condensation on the laser processing head 2.

The utility model also provides a laser device, including a cabinet 1 and the cooling system described in any of the above schemes, wherein the main control module, the compressor 5, the condenser 6, the fan 8, the water pump 9 and the water tank 10 are all It is arranged in the cabinet 1 of the laser equipment.

In summary, the beneficial effects of the utility model are:

1. The cooling system, laser module, and control module are integrated in the cabinet, which realizes the integrated cooling design of the laser equipment, reduces the total volume, weight and occupied space of the laser equipment, and improves the mobility of the laser equipment.

2. The cooling system adopts the combination of refrigerant direct cooling system and water cooling system to realize multiple working modes. The laser module is cooled and dissipated through the refrigerant plate. Compared with the traditional water cooling solution, the cooling efficiency is higher and the cooling temperature is lower. The heat generated inside the laser module can be quickly taken away, and the heat dissipation efficiency is high; the refrigerant provided by the refrigerant cooling system is cooling the laser module and cooling water of the water cooling system, which improves the cooling efficiency of the cooling system. The structural layout of the cooling system is simplified.

3. The cooling system can realize intelligent cooling control through the main control module, so that the cooling system can be freely switched under different working modes to meet the cooling needs of different scenarios, and the compressor can also be adaptively adjusted according to the real-time monitoring temperature of the laser module and water tank , fans, etc., to provide a cooling environment and temperature that meet the requirements.

4. The refrigerant plate is set in the sealed laser module, so that the optical path module inside the laser is less likely to be exposed to the external environment, and the phenomenon of condensation is avoided.

5. The laser module is directly cooled by a refrigerant plate, which reduces the external interface of the laser module, makes it easier to seal, and has higher sealing performance.

6. The first bypass branch is set in the cooling system, which solves the problem that when the laser equipment is switched to normal working state or high load state, the compressor and fan can quickly increase to the same frequency as the original frequency. The matching frequency of laser equipment when working under high load. Therefore, the matching time of the frequency conversion of the compressor is shortened, and the frequency matching speed of the compressor is improved when the laser equipment is running under high load.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; Combinations, steps can be implemented in any order, and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity; although the utility model has been described in detail with reference to the foregoing embodiments, Those skilled in the art should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not deviate from the essence of the corresponding technical solutions The scope of the technical solutions of each embodiment of the utility model.

Claims (10)

1. A cooling system of laser equipment is characterized by comprising a laser module, a main control module, a compressor, a condenser, a refrigerant plate, a heat exchange device, a water pump, a water tank and a laser processing head;

the refrigerant plate is hermetically arranged in the laser module, the heat exchange device is arranged in the water tank, and the compressor, the condenser, the refrigerant plate and the heat exchange device are connected in series through a first pipeline to form a first cooling loop;

a cooling water channel is arranged in the laser processing head, and the water pump, the water tank and the laser processing head are connected in series through a second pipeline to form a second cooling loop;

the cooling system also comprises a first bypass device which is connected to the first cooling circuit by a third pipe to form a first bypass branch, and the first bypass device is connected to the output end of the compressor.

2. The cooling system of claim 1, wherein the first bypass device is a plate heat exchanger having a first inlet port and a first outlet port, and a second inlet port and a second outlet port;

the first input port and the first output port are respectively connected with the output end of the compressor and the input end of the condenser through the third pipeline to form the first bypass branch, and a first electromagnetic valve is further arranged on the first pipeline between the output end of the compressor and the input end of the condenser;

the second input port and the second output port are respectively connected with the output end of the refrigerant plate and the input end of the heat exchange device through the first pipeline.

3. The cooling system according to claim 1, wherein the first bypass device is a first capillary tube, two ends of the first capillary tube are respectively connected to the output end of the compressor and the input end of the heat exchanging device through the third pipeline to form the first bypass branch, and a second solenoid valve is further disposed on the first bypass branch.

4. The cooling system according to any one of claims 1 to 3, further comprising an expansion valve, wherein the expansion valve is connected in series between the condenser and the refrigerant plate, and the expansion valve is electrically connected to the main control module.

5. The cooling system according to any one of claims 1 to 3, further comprising a liquid reservoir connected in series between the condenser and the refrigerant plate.

6. The cooling system according to any one of claims 1 to 3, further comprising a second bypass device connected in parallel to the input end and the output end of the condenser through a third pipeline to form a second bypass branch, wherein a third solenoid valve is further disposed on the second bypass branch.

7. The cooling system according to claim 6, wherein the second bypass device is a second capillary tube, and two ends of the second capillary tube are respectively connected with the input end and the output end of the condenser through a third pipeline.

8. The cooling system of claim 1, wherein a first pressure sensor and a second pressure sensor are respectively disposed at an input end and an output end of the compressor, and the first pressure sensor and the second pressure sensor are electrically connected to the main control module.

9. The cooling system of claim 1, wherein a first temperature sensor and a second temperature sensor are respectively disposed in the refrigerant plate and the water tank, and the first temperature sensor and the second temperature sensor are electrically connected to the main control module.

10. A laser device, comprising the cooling system of any one of claims 1 to 9, wherein the main control module, the compressor, the condenser, the blower, the water pump, and the water tank are disposed in a cabinet of the laser device.

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