CN217563036U

CN217563036U - Continuous fiber laser and laser processing equipment thereof

Info

Publication number: CN217563036U
Application number: CN202123429856.5U
Authority: CN
Inventors: 黎永坚; 杨吉桦; 张金华; 兰明强; 蒋峰
Original assignee: Suzhou Maxphotonics Co Ltd
Current assignee: Suzhou Maxphotonics Co Ltd
Priority date: 2021-06-10
Filing date: 2021-12-31
Publication date: 2022-10-11
Anticipated expiration: 2031-12-31
Also published as: CN114552336B; CN114552336A

Abstract

The utility model relates to the technical field of laser, and provides a continuous fiber laser and laser processing equipment thereof, which comprises a cooling pipeline accommodated in a laser case, and a compressor, a condenser and an evaporation cold plate which are sequentially communicated through the cooling pipeline; the compressor and the condenser are arranged on the bottom plate of the case and respectively close to two sides of the case; the evaporation cold plate is arranged between the top plate of the case and the condenser and is tightly attached to a pumping source of the laser. The utility model discloses a phase transition refrigeration technology, with the pumping source of laser instrument evaporation cold plate of closely laminating, improved the radiating efficiency in pumping source, the evaporation cold plate sets up again between the roof of laser machine case and condenser, has further reduced the laser instrument volume, has improved the equipment of integrating of laser instrument, is favorable to laser instrument and laser processing equipment to use in multiple occasion.

Description

Continuous fiber laser and laser processing equipment thereof

Technical Field

The embodiment of the utility model provides a relate to laser technical field, in particular to continuous fiber laser and laser processing equipment thereof.

Background

The fiber laser has the advantages of compact structure, good heat dissipation performance, high conversion efficiency, excellent beam quality, stable performance and the like, gradually replaces a solid laser, a chemical laser and the like to become mainstream products in the current laser market, and is widely applied to industrial manufacturing. However, during the operation of the laser, a great deal of heat is emitted, and if the heat is not neutralized or removed in time, the normal use of the laser is seriously affected, and even the laser is directly burnt. At present, the heat dissipation method of the optical fiber laser mainly comprises air-cooled heat dissipation and liquid-cooled heat dissipation. Aiming at the low-power fiber laser, the heat dissipation requirement can be met by adopting air cooling heat dissipation. For medium and high power fiber lasers, liquid cooling is generally used for heat dissipation. However, in the liquid cooling and heat dissipation, a water cooler needs to be arranged, and the water cooler has a large volume and weight, so that the water cooler can only be arranged outside the laser. With the further improvement of the power of the optical fiber laser, the volume and the weight of the water cooler must be increased to meet the heat dissipation requirement. This is unfavorable for the integrated design of laser instrument, and simultaneously, liquid cooling heat dissipation also has the liquid leakage scheduling problem in the application. In addition, with the deep use of fiber lasers in industrial manufacturing, higher requirements are also put on the application scenarios of the fiber lasers. If a huge water cooler is externally arranged, the structure of the optical fiber laser is complex, and the optical fiber laser is not beneficial to moving randomly, so that the application of the optical fiber laser in different places is limited.

Although the related art introduces a phase change process (phase change refrigeration) of a refrigeration medium to achieve efficient heat dissipation of a laser, the volume of the laser cannot be further reduced in the application of the phase change heat dissipation principle of the refrigeration medium to a medium-high power laser. For example, the invention patent: the disclosure of a fiber laser (CN 201510634911.4) including a high-efficiency temperature control device shows that a condenser, a compressor, a throttling device, and an evaporation cold plate are disposed in a cabinet, but the compressor, the condenser, and the evaporation cold plate are all fixed at the bottom of the cabinet, and the volume of the laser cabinet is still large.

Based on this, the applicant in the field combines the phase change refrigeration module with the internal structure of the laser, and realizes further reduction of the volume of the laser and further improvement of the heat dissipation effect.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a aim at providing a continuous fiber laser and laser beam machining equipment thereof to the former radiating effect of pumping is relatively poor and the great technical problem of laser volume among the solution prior art laser.

The embodiment of the utility model provides a solve its technical problem and adopt following technical scheme: there is provided a continuous fibre laser comprising: the cooling pipeline is accommodated in the case, and the compressor, the condenser and the condensing plate are sequentially communicated through the cooling pipeline; the compressor and the condenser are arranged on the bottom plate of the case and respectively close to two sides of the case; the evaporation cold plate is arranged between the top plate of the case and the condenser and is tightly attached to the pumping source.

In some embodiments, the evaporative cold plates are spaced further from the floor of the enclosure than the condenser.

In some embodiments, the continuous fiber laser comprises: the condenser comprises at least one first fan set and at least one second fan set, wherein the first fan set and the second fan set are respectively arranged on two opposite sides of the case, the condenser is fixed on one side adjacent to the second fan set, and an air outlet of the second fan set faces away from the condenser.

In some embodiments, the continuous fiber laser comprises: and the throttle valve is arranged above the condenser in a suspending way through a cooling pipeline communicated with the throttle valve.

In some embodiments, the continuous fiber laser comprises: the two ends of the accommodating bracket are respectively fixed on the bottom plate or the side plate of the case; or one end of the accommodating bracket is fixed on the bottom plate or the side plate of the case, and the other end of the accommodating bracket is fixed on the condenser.

In some embodiments, the continuous fiber laser further comprises: one end of the accommodating bracket is fixed on the first fan, and the other end of the accommodating bracket is fixed on the condenser or the second fan; or one end of the accommodating support is fixed on the bottom plate or the side plate of the case, and the other end of the accommodating support is fixed on the first fan or the second fan.

In some embodiments, the accommodating bracket is provided with an accommodating cavity, the evaporation cold plate is completely accommodated in the accommodating cavity and is tightly attached to the pumping source, and the shape and the size of the accommodating cavity are matched with those of the evaporation cold plate; the accommodating cavity is made of heat insulating materials, and a heat insulating layer is arranged on the part, attached to the evaporation cold plate, of the accommodating cavity.

In some embodiments, the continuous fiber laser further comprises: the two ends of the mounting support plate are respectively fixed on the side plates of the case and arranged between the accommodating parts, the main control plate, the power supply plate, the drive plate and the adapter plate of the laser are arranged on the mounting support plate, and at least one group of radiating fins are arranged on the mounting support plate.

In some embodiments, the distance from the compressor to the floor of the enclosure is greater than or equal to the distance from other components within the continuous fiber laser to the floor of the enclosure, and less than the distance from the fiber optic disc to the floor of the enclosure.

Furthermore, the embodiment of the utility model provides a solve its technical problem and still adopt following technical scheme: laser processing equipment comprises a laser processing head and the continuous fiber laser, wherein the continuous fiber laser is connected with the laser processing head.

The utility model has the advantages that: the utility model provides a continuous fiber laser, which comprises a cooling pipeline accommodated in a laser case, and a compressor, a condenser and an evaporation cold plate which are sequentially communicated through the cooling pipeline; the compressor and the condenser are arranged on the bottom plate of the case and respectively close to two sides of the case; the evaporation cold plate is arranged between the top plate of the case and the condenser and is tightly attached to the pumping source of the laser. (1) The evaporation cold plate is arranged between the top plate of the laser case and the condenser, so that the size of the laser is further reduced, the integrated assembly of the laser is improved, and the laser can be applied in various occasions. (2) The utility model provides an in the continuous fiber laser the compressor arrives the distance of the bottom plate of machine case is more than or equal to other parts arrive in the continuous fiber laser the distance of the bottom plate of machine case is less than the optical fiber dish arrives the distance of the bottom plate of machine case has avoided with the optical fiber dish also is fixed in on the bottom plate of machine case, abundant utilization the height of compressor has further reduced the volume of laser instrument. (3) The utility model provides a continuous fiber laser includes: the condenser is fixed on one side adjacent to the second fan set, and the air outlet of the second fan set faces away from the condenser, so that the directional flow speed of air in the laser case is increased, the flow distance of the air in the laser case is reduced due to the reduction of the size of the laser case, the heat dissipation of the condenser is further accelerated, the efficiency of phase change refrigeration is improved, and the heat dissipation efficiency of a laser pumping source is improved. (4) The utility model provides a continuous fiber laser still includes: the accommodating support plate is provided with an accommodating cavity, the evaporation cold plate is completely accommodated in the accommodating cavity and tightly attached to the pumping source, the accommodating cavity is made of heat insulation materials, and a heat insulation layer is arranged on the part, attached to the evaporation cold plate, of the accommodating cavity. Therefore, the cold energy generated by the evaporation cold plate is fully neutralized with the heat generated by the pumping source, so that the high-efficiency refrigeration and heat dissipation effects are achieved. (5) The utility model provides a laser processing equipment includes as above continuous fiber laser, consequently possesses as above beneficial effect, no longer gives unnecessary details here.

Drawings

One or more embodiments are illustrated in corresponding drawings which are not to be construed as limiting the embodiments, wherein elements/blocks having the same reference number designation may be designated by similar elements/blocks, unless expressly stated otherwise, and the drawings are not to be construed as limiting in scale.

Fig. 1 is a perspective view of a continuous fiber laser according to an embodiment of the present invention;

fig. 2 is another angular perspective view of a continuous fiber laser in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a part of a phase change refrigeration module in an embodiment of the present invention;

fig. 4 is a schematic diagram of a partial structure of a continuous fiber laser according to an embodiment of the present invention;

fig. 5 is a schematic diagram of another angular configuration of the continuous fiber laser of fig. 4 with the fiber tray removed;

fig. 6 is an exploded view of the pump source, the evaporative cooling plate, and the receiving bracket in the continuous fiber laser according to the embodiment of the present invention;

fig. 7 is a schematic structural diagram of a continuous fiber laser according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "disposed on," "secured to," or "mounted to" another element, it can be directly on the other element or intervening elements may also be present. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The directional or positional relationships "upper", "lower", "top", "bottom", "side", "inner", "outer", etc., are those shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. In addition, in this specification, the words "first", "second", "third", and "fourth" do not limit data and execution order, but merely distinguish substantially the same item or similar items in function and action, and do not limit the embodiments of the present invention.

Specifically, the present embodiment is further explained below with reference to the drawings.

Referring to fig. 1 and fig. 2, the continuous fiber laser provided in this embodiment includes: a chassis 100, said chassis 100 comprising a top plate 102, a bottom plate 117, four side plates surrounding said top plate 102 and said bottom plate 117, a first side plate 103, a second side plate 104, a third side plate 105 and a fourth side plate 106, respectively, thereby defining a cavity inside said continuous fiber laser chassis together for housing and mounting electrical and optical components. The first side plate 103 and the third side plate 105 are disposed on two opposite sides of the chassis, and the second side plate 104 and the fourth side plate 106 are disposed on two opposite sides of the chassis 100. Four foot pads 114 are provided on the base plate 117 of the continuous fibre laser.

In the continuous fiber laser, a device mainly generating heat is the pump source 101, and therefore, the pump source 101 needs to be cooled and radiated forcibly when the heat generated by the continuous fiber laser is reduced. Referring to fig. 3, an embodiment of the present invention provides a continuous fiber laser, including: the phase-change refrigeration module contained in the laser case 100 comprises a cooling pipeline 201, and a compressor 202, a condenser 203 and an evaporation cold plate 204 which are sequentially communicated through the cooling pipeline 201. The compressor 202 and the condenser 203 are disposed on the bottom plate 117 and respectively close to two side plates of the cabinet 100. In order to fully utilize the volume of the enclosure 100 and reduce the volume of the continuous fiber laser, the present embodiment changes the placement of the evaporative cold plate 204 from the currently commonly used fixation on the bottom plate 117 to a floating arrangement between the top plate 102 and the bottom plate 117, wherein the distance from the evaporative cold plate 204 to the bottom plate 117 is greater than the distance from the condenser 203 to the bottom plate 117. Namely, the evaporative cooling plate 204 is disposed between the top plate 102 of the cabinet and the condenser 203, and is closely attached to the pump source 101.

In order to firmly mount the compressor 202 and the condenser 203 on the bottom plate 117, a mounting plate 116 is closely attached and fixed above the bottom plate 117, and the compressor 202 and the condenser 203 are directly fixed on the mounting plate 116.

The continuous fiber laser further includes: the compressor 202, the condenser 203, the throttle valve 207 and the evaporative cold plates 204 which are sequentially communicated with the cooling pipeline 201 form a refrigeration cycle. That is, in this embodiment, the phase change refrigeration module includes the compressor 202, the condenser 203, the throttle valve 207, and the evaporation cold plate 204, which are sequentially communicated with the cooling pipeline 201. Specifically, since the cooling pipeline 201 is made of a metal material and has a certain strength, the throttle valve 207 may be suspended above the condenser 203 through the cooling pipeline 201 communicated therewith.

In the process of phase-change refrigeration, in order to improve the cycle efficiency of phase-change refrigeration, the condenser 203 needs to be cooled by rapid heat dissipation. Therefore, in the continuous fiber laser for the phase change refrigeration application, the surface area of the condenser 203 is large, and a fan or a fan is generally required to cool and dissipate the heat. Therefore, the continuous fiber laser of the present embodiment includes: a first fan set 205 and a second fan set 206. Referring to fig. 4, in order to accelerate the directional flow of air in the chassis 100, the first fan set 205 and the second fan set 206 are respectively disposed on two opposite sides of the chassis 100, and meanwhile, the condenser 203 is fixed on one side of the second fan set 206 adjacent to the first fan set 206, and an air outlet of the second fan set 206 faces away from the condenser 203. At present, in order to improve the directional flow rate of air, the rotating speed of the fan is generally increased or the number of the fans is increased, but with the increase of the rotating speed of the fans or the increase of the number of the fans, vibration noise generated by the fans is correspondingly increased. Therefore, the first fan set 205 and the second fan set 206 in this embodiment preferably use 2 to 3 fans, respectively, while combining the size of the enclosure 100.

In addition, because the volume of the compressor 202 is large, in order to reduce the obstruction of the compressor 202 to the directional movement of the air driven by the first fan set 205 and the second fan set 206 in the chassis 100, specifically, please refer to fig. 4 again, in this embodiment, the compressor 202 is fixed to the bottom plate 117 and close to the first side plate 103 of the chassis 100, and the condenser 203 is fixed to the bottom plate 117 and close to the second side plate 104 of the chassis; the first fan unit 205 and the second fan unit 206 are fixed on the fourth side plate 106 and the second side plate 104 of the chassis 100 by screws, respectively. With reference to fig. 1 and fig. 2, correspondingly, the second side plate 104 is provided with an air outlet 118, and the fourth side plate 106 is provided with an air inlet 119. The first fan set 205 drives outside air to enter the chassis 100 from the air inlet 119, and the second fan set 206 is used for guiding the air in the chassis to be discharged from the air outlet 118 so as to accelerate the rapid directional flow of the air in the chassis 100; meanwhile, as the volume of the case 100 is reduced, that is, the flow path of air in the case 100 is reduced, the speed of taking away the heat of the condenser 203 is increased, thereby improving the cooling efficiency of the entire continuous fiber laser.

In this embodiment, in order to realize that the evaporation cold plate 204 is suspended and fixed between the top plate 102 and the condenser 203, the continuous fiber laser further includes: housing the bracket 208. The receiving bracket 208 may be fixed in the chassis 100 by means of a snap or a screw. Specifically, two ends of the accommodating bracket 208 may be fixed to the bottom plate 117 or the side plate, respectively, or one end of the accommodating bracket 208 is fixed to the bottom plate 117 or the side plate, and the other end is fixed to the condenser 203; or, one end of the accommodating bracket 208 is fixed to the bottom plate 117 or the side plate, and the other end is fixed to the first fan unit 205 or the second fan unit 206; alternatively, one end of the accommodating bracket 208 is fixed to the first fan unit 205, and the other end is fixed to the condenser 203 or the second fan unit 206. When the phase change refrigeration module is installed, the compressor 202, the condenser 203 and the evaporation cold plate 204 included in the phase change refrigeration module are installed in sequence from the bottom plate 117 along the direction of the top plate 102. Therefore, in order to match the installation arrangement of other devices of the phase change refrigeration module 200, in this embodiment, referring to fig. 5, preferably, one end of the accommodating bracket 208 is fixed to the first fan unit 205, and the other end is fixed to the condenser 203.

Referring to fig. 6, the receiving bracket 208 includes a receiving plate 208a and a fixing connection plate 208b, and the receiving plate 208a and the fixing connection plate 208b may be integrally formed or detachably assembled. In order to facilitate the installation of the pump source 101 and the housing bracket 208, a detachable assembly connection is preferably adopted in the present embodiment. One end of the fixed connection plate 208b is fixed to the first fan unit 205, the other end thereof is fixed to one end of the accommodation plate 208a, and the other end thereof, which is opposite to the accommodation plate 208a, is fixed to the condenser 203. Specifically, in this embodiment, one end of the fixing connecting plate 208b and one end of the accommodating plate 208a are fixed by screws, the other end of the fixing connecting plate 208b opposite to the fixing connecting plate is bent and extended vertically along the direction of the top plate 102, and a plurality of locking holes (not shown) are formed in the extending end of the fixing connecting plate, so that one end of the fixing connecting plate 208b is fixed to the first fan set 205 by screws passing through the locking holes (not shown). The other end of the accommodating plate 208a opposite to the condenser 203 is provided with a plurality of fastening holes (not marked) fixed on the condenser 203, and the condenser 203 is provided with fastening clips matched with the fastening holes so as to fix the accommodating plate 208a on the condenser 203.

In the phase-change refrigeration process, the evaporation cold plate 204 and the heat source to be cooled (mainly the pump source 101 in this embodiment) are generally placed together in a closed space and isolated from other components of the phase-change refrigeration module 200, so as to ensure that the cold generated by the evaporation cold plate 204 is sufficiently neutralized by the heat generated by the heat source to be cooled, thereby improving the phase-change refrigeration efficiency. Therefore, with continued reference to fig. 5 and fig. 6, in the present embodiment, the receiving cavity 208a is provided with a receiving cavity 208c recessed downward, the evaporation cold plate 204 is installed in the receiving cavity 208c, the receiving cavity 208c is a semi-enclosed groove design and is only open facing the direction of the top plate 102, so as to reduce the contact between the evaporation cold plate 204 and the air, wherein the shape and the size of the receiving cavity 208c are matched with the shape and the size of the evaporation cold plate 204. Further, in order to reduce the conduction of the cold energy generated by the evaporation cold plate 204 through the housing bracket 208 and the consumption of the cold energy by other components of the laser except the pump source 101, the housing cavity 208c in this embodiment is made of a heat insulating material, the heat insulating material is generally made of asbestos or plastic, and a heat insulating layer (not shown) is further disposed at the joint portion of the housing cavity 208c and the evaporation cold plate 204, so that the evaporation cold plate 204 only transmits the cold energy in the direction facing the top plate 102; the pump source 101 is directly and closely attached to the evaporative cold plate 204, that is, the pump source 101 is directly installed in the direction of the evaporative cold plate 204 for transferring the cold. Therefore, it can be understood that the cold energy released by the evaporative cold plate 204 of the present embodiment is not completely absorbed by the closely fitting pump source 101 during the transfer in the direction of the top plate 102. Experiments prove that compared with the refrigeration effect of only placing the evaporation cold plate 204 and the pumping source 101 together in a closed space, the refrigeration effect of the evaporation cold plate 204 on the pumping source 101 can reach 70% -80%. However, as described above, the present embodiment further includes the first fan set 205 and the second fan set 206 which are oppositely disposed, and since the two fan sets forcibly drive the directional flow of air, the heat dissipation of the pump source 101 can also be accelerated, so that the cooling effect of the continuous fiber laser can be improved by 20% to 30%. Therefore, the embodiment can realize better refrigeration effect when reducing the volume of the continuous fiber laser.

The laser emitted by the pump source 101 is transmitted through a plurality of optical fibers, and therefore, the continuous fiber laser in this embodiment further includes an optical fiber tray 209, which is provided with an optical fiber accommodating groove 209a for winding and fixing the optical fiber. The optical fiber accommodating groove 209a is further provided with an optical fiber tray cover (not shown) for covering the optical fiber in the optical fiber accommodating groove 209 a. With continued reference to fig. 4, the fiber tray 209 is disposed below the top plate 102 of the enclosure. In order to obtain a good beam quality of the laser light output by the pump source 101, the radius of the optical fiber cannot be too small when the optical fiber is coiled and fixed. Therefore, in this embodiment, preferably, the area of the optical fiber tray 209 facing the top plate 102 is adapted to the size of the area of the top plate 102, and the four side walls of the optical fiber tray 209 are all fixed on the four side plates of the chassis by rivets or screws. Meanwhile, the compressor 202, the pumping source 101, the first fan set 205, the second fan set 206 and the accommodating bracket 208 are positioned below the optical fiber disc 209.

It should be noted that, in order to fully utilize the height of the compressor 202 and further reduce the volume of the laser, in this embodiment, the distance from the compressor 202 to the base plate 117 is greater than or equal to the distance from other components in the continuous fiber laser to the base plate 117, and is smaller than the distance from the fiber tray 209 to the base plate 117.

Because the optical fiber also generates heat during the laser transmission process, at least one set of heat dissipation fins 210 extends from the optical fiber tray 209 to one side in the chassis 100, the number of the heat dissipation fins 210 is multiple, the plurality of heat dissipation fins 210 are parallel, and every two adjacent heat dissipation fins 210 are arranged at intervals. Further, the length direction of the heat sink 210 is aligned with the airflow direction, which helps the air inside the chassis 100 to fully contact the heat sink 210.

In this embodiment, referring to fig. 5 and 7, the continuous fiber laser further includes: and two ends of the mounting bracket plate 211 are respectively fixed to the side plates of the case 100, and the mounting bracket plate 211 is disposed between the accommodating bracket plate 211 and the bottom plate 117. Preferably, two adjacent ends of the mounting bracket plate 211 are respectively fixed to two adjacent side plates of the chassis 100, and the other two adjacent ends are not fixed to any object. Specifically, two ends of the mounting bracket plate 211 are respectively fixed to the third side plate 105 and the fourth side plate 106, so that the condenser 203, the compressor 202 and the mounting bracket plate 211 are arranged in a staggered manner inside the cabinet 100, and the area perpendicular to the bottom plate 117 is fully utilized. Further, since the first fan set 205 is installed on the fourth side plate 106, the mounting bracket plate 211 is also disposed below the first fan set 205, and the mounting bracket plate 211 is disposed above the bottom plate 117. Therefore, the first fan unit 205 and the second fan unit 206 which are arranged oppositely are also beneficial to heat dissipation of the mounting bracket plate 211 and the electrical components arranged on the mounting bracket plate 211 in the process of driving air to flow.

Specifically, with continued reference to fig. 5 and fig. 7, the main control board 107, the power board 108, the driving board 109, and the adapter board 110 of the laser are mounted on the mounting bracket board 211, and at least one set of heat dissipation fins 212 extends from a side of the mounting bracket board 211 away from the bottom board 117. The driving board 109 includes: a pump source drive plate 109a and a compressor drive plate 109b. In this embodiment, the main control board 107, the power board 108, and the pump source driving board 109a are mounted on one side of the mounting bracket board 211 close to one side of the bottom board 117, and the compressor driving board 109b and the adapter board 110 are mounted on the other opposite side of the mounting bracket board 500. The main control board 107 is electrically connected with the power board 108, the driving board 109 and the adapter board 110 respectively.

Because the compressor 202 vibrates during the refrigeration process, a plurality of pendant holes (not labeled) are formed in the side wall of the compressor 202, and a damping ball 213 is sleeved on each pendant hole to reduce the vibration caused by the compressor 202.

The working principle of the phase-change refrigeration module is as follows: first, the refrigeration medium used in the phase-change refrigeration module is one of ammonia gas, sulfur dioxide and non-halogenated hydrocarbon, and the refrigeration medium (not shown) flows circularly in the compressor 202, the condenser 203, the throttle valve 207 and the evaporative cooling plate 204 through the cooling pipe 201 in sequence. Specifically, the compressor 202 compresses the refrigerant medium (not shown) from a low-temperature low-pressure gaseous state to a high-temperature high-pressure gaseous refrigerant medium; then, the high-temperature high-pressure gaseous refrigerant passes through the condenser 203, and because the condenser 203 is cooled under the action of the first fan unit 205 and the second fan unit 206, the gaseous refrigerant dissipates heat into the air, the gaseous refrigerant condenses inside the condenser and becomes a normal-temperature high-pressure liquid refrigerant, and then passes through the throttle valve 207, and because the throttle valve 207 has a small cross section and large resistance, the pressure of the refrigerant can be reduced, so that the refrigerant passing through the throttle valve 207 becomes a low-temperature low-pressure liquid refrigerant; the low-temperature low-pressure liquid refrigerant enters the evaporation cold plate 204, and due to the sudden increase of the volume, the refrigerant is rapidly evaporated, at this time, the evaporation cold plate 204 exchanges heat with the pumping source 101 to become the low-temperature low-pressure gaseous refrigerant, and the low-temperature low-pressure gaseous refrigerant returns to the compressor 202 again to complete a refrigeration cycle. During this cycle, work is done by the compressor 202 to maintain the temperature of the evaporative cold plates 204 at the cryogenic ambient temperature conditions at all times.

Referring to fig. 1 and fig. 7, in this embodiment, the second side plate 104 of the chassis is provided with an optical fiber interface 111, and the continuous fiber laser further includes: the laser output head 112 is disposed outside the chassis 100, and the laser output head 112 is connected to the pump source 101 inside the chassis 100 of the continuous fiber laser through the fiber interface 111, and is configured to output laser emitted by the pump source 101.

In this embodiment, please continue to refer to fig. 2 and fig. 7, the fourth side plate 106 of the chassis 100 of the continuous fiber laser is further provided with other various interfaces, including but not limited to a communication interface 115 and an electrically connected power interface 113, where the communication interface 115 may be a serial interface, a USB interface, a bluetooth/WIFI interface, etc., and an external power supply supplies power to the continuous fiber laser through the power interface 113.

In this embodiment, the chassis 100, the heat sinks 210/212, the optical fiber tray 209, and the mounting bracket plate 500 are made of materials with high thermal conductivity, such as aluminum alloy, red copper, and the like, so as to improve the overall heat dissipation capability of the continuous fiber laser.

In addition, the present embodiment provides a laser processing apparatus including the continuous fiber laser described in the present embodiment.

Compared with the prior art, the present embodiment provides a continuous fiber laser, which includes a housing 100 for housing a laser and is used for cooling a pump source 101, including: a cooling pipeline 201, and a compressor 202, a condenser 203 and an evaporation cold plate 204 which are sequentially communicated through the cooling pipeline 201; the compressor 202 and the condenser 203 are disposed on the bottom plate 117 and respectively close to two sides of the cabinet 100; the evaporative cold plate 204 is disposed between the top plate 102 and the condenser 203 and is in close proximity to the laser pumping source 101. (1) Due to the fact that the phase-change refrigeration technology is adopted, the pumping source 101 is tightly attached to the evaporation cold plate 204, the heat dissipation efficiency of the pumping source 101 is improved, and the evaporation cold plate 204 is arranged between the top plate 102 of the case and the condenser 203, and the size of the laser is further reduced. (2) In the continuous fiber laser provided by this embodiment, the distance from the compressor 202 to the bottom plate 117 is greater than or equal to the distance from other components in the continuous fiber laser to the bottom plate 117, and is smaller than the distance from the fiber tray 209 to the bottom plate 117, so that the fiber tray 209 is prevented from being fixed on the bottom plate 117, the height of the compressor 202 is fully utilized, and the volume of the continuous fiber laser is further reduced. (3) The continuous fiber laser provided by the embodiment includes: the first fan set 205 and the second fan set 206 are respectively arranged on two opposite sides of the case 100, the condenser 203 is fixed on one side of the second fan set 206 adjacent to the first fan set 205 and the second fan set 206, and the air outlet of the second fan set 206 faces away from the condenser 203, so that the directional flow speed of air in the case of the continuous fiber laser is increased, and the flow path of air in the case 100 is reduced due to the reduction of the volume of the case 100 of the continuous fiber laser, so that the heat dissipation of the condenser 203 is further accelerated, the phase-change refrigeration efficiency is increased, and the heat dissipation efficiency of the pump source 101 is increased. (4) The continuous fiber laser provided by the present embodiment further includes: the accommodating support plate 208 is provided with an accommodating cavity 208a, the evaporation cold plate 204 is completely accommodated in the accommodating cavity 208a and is tightly attached to the pumping source 101, the accommodating cavity 208a is made of a heat insulating material, and a heat insulating layer is arranged on the attaching part of the accommodating cavity 208a and the evaporation cold plate 204. Therefore, the cold energy generated by the evaporation cold plate 204 is fully neutralized with the heat generated by the pumping source 101, so as to achieve the effect of high-efficiency refrigeration and heat dissipation.

In addition, the embodiment also provides laser processing equipment which comprises the continuous fiber laser, and on the premise that the volume of the continuous fiber laser is smaller, the laser processing equipment can be used for processing in various occasions and with higher power.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A continuous fiber laser comprising: a pumping source, a cooling pipeline and a compressor, a condenser and an evaporation cold plate which are sequentially communicated through the cooling pipeline, which are accommodated in the laser machine case,

the compressor and the condenser are arranged on the bottom plate of the case and respectively close to two sides of the case;

the evaporation cold plate is arranged between the top plate of the case and the condenser and is tightly attached to the pumping source.

2. The continuous fiber laser of claim 1, wherein the evaporative cold plate is a greater distance from the floor of the chassis than the condenser.

3. The continuous-fiber laser of claim 1, further comprising: the condenser comprises at least one first fan set and at least one second fan set, wherein the first fan set and the second fan set are respectively arranged on two opposite sides of the case, the condenser is fixed on one side adjacent to the second fan set, and an air outlet of the second fan set faces away from the condenser.

4. The continuous fiber laser of claim 1, further comprising a receiving bracket, both ends of the receiving bracket being fixed to a bottom plate or a side plate of the housing, respectively; or

One end of the accommodating bracket is fixed on the bottom plate or the side plate of the case, and the other end of the accommodating bracket is fixed on the condenser.

5. The continuous fiber laser of claim 3, further comprising a receiving bracket, one end of the receiving bracket being fixed to the first fan unit and the other end of the receiving bracket being fixed to the condenser or the second fan unit; or

One end of the accommodating support is fixed on a bottom plate or a side plate of the case, and the other end of the accommodating support is fixed on the first fan unit or the second fan unit.

6. The continuous fiber laser of claim 4 or 5, wherein the receiving holder has a receiving cavity, the evaporation cold plate is completely received in the receiving cavity and closely attached to the pump source, and the shape and size of the receiving cavity are matched with those of the evaporation cold plate;

the accommodating cavity is made of heat insulating materials, and a heat insulating layer is arranged on the part, attached to the evaporation cold plate, of the accommodating cavity.

7. The continuous fiber laser of claim 1, further comprising a fiber tray disposed below the top plate of the housing, the fiber tray having at least one set of fins extending toward an inner side of the housing, wherein the number of the fins is plural, the fins are parallel, and every two adjacent fins are spaced apart.

8. The continuous fiber laser of claim 6, further comprising a mounting bracket plate, wherein two ends of the mounting bracket plate are respectively fixed to the side plates of the housing and disposed between the accommodating bracket and the bottom plate of the housing, the main control plate, the power supply plate, the driving plate, and the adapter plate of the laser are mounted on the mounting bracket plate, and at least one set of heat dissipation fins is disposed on the mounting bracket plate.

9. The continuous fiber laser of claim 7, wherein the compressor is located a distance from the floor of the enclosure that is greater than or equal to a distance from other components within the continuous fiber laser to the floor of the enclosure that is less than a distance from the fiber tray to the floor of the enclosure.

10. A laser machining apparatus, characterized by comprising: a laser machining head and a continuous fibre laser as claimed in any of claims 1 to 9 connected to the laser machining head.