CN214706575U - Integrated phase change cold accumulation heat sink of high-power optical fiber laser - Google Patents
Integrated phase change cold accumulation heat sink of high-power optical fiber laser Download PDFInfo
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- CN214706575U CN214706575U CN202121312769.9U CN202121312769U CN214706575U CN 214706575 U CN214706575 U CN 214706575U CN 202121312769 U CN202121312769 U CN 202121312769U CN 214706575 U CN214706575 U CN 214706575U
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Abstract
The utility model provides a high power fiber laser integration phase transition cold-storage is heat sink, including heat sink body, this internal heat sink cavity that is equipped with of heat sink, be provided with the heat conduction skeleton in the heat sink cavity, inside heat dissipation piece and the heat dissipation piece of being equipped with of heat conduction skeleton stretch out outside the heat sink body, the heat sink cavity intussuseption is filled with phase change material. The utility model is used for high power fiber laser's heat dissipation management can reduce thermal management system's volume weight and consumption by a wide margin, provides convenience for high power fiber laser's mobile portable application.
Description
Technical Field
The utility model belongs to the technical field of fiber laser thermal management equipment, in particular to high power fiber laser integration phase transition cold-storage is heat sink.
Background
The high-power optical fiber laser is widely applied due to the advantages of good beam quality, high efficiency, convenient use and the like. Currently, the electro-optic efficiency of a high-power fiber laser is mostly about 30%, and an industrial water cooling machine is generally adopted for heat dissipation. Along with the improvement of laser output power, the volume weight and the power consumption of the water cooling machine are increased, and inconvenience is brought to certain mobile applications.
Therefore, a small, light-weight, and mobile fiber laser thermal management device with heat dissipation effect is a technical problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The defect that exists to prior art, the utility model provides a high power fiber laser integration phase transition cold-storage is heat sink can ensure fiber laser continuous operation for a certain time, and small, light in weight, no consumption are convenient for mobile application, have wide application prospect in fields such as high tension line removes obstacles, field laser processing.
In order to achieve the technical purpose, the utility model provides a technical scheme does:
high power fiber laser integration phase transition cold-storage is heat sink, including heat sink body, this internal heat sink cavity that is equipped with of heat sink, be provided with the heat conduction skeleton in the heat sink cavity, inside heat dissipation piece and the heat dissipation piece that is equipped with of heat conduction skeleton stretch out outside the heat sink body, the heat sink cavity intussuseption is filled with phase change material.
As a further improvement, the heat conducting framework is a net structure framework made of high heat conducting metal or graphite material. The upper side and the lower side of the heat conducting framework are tightly attached to the upper side and the lower side of the heat sink cavity. The heat conduction framework is used for improving the heat conduction coefficient of the phase change material.
As a further improvement, the heat sink body is made of high-thermal-conductivity metal materials such as aluminum and copper. The upper side and the lower side of the heat sink body are used as mounting platforms of laser devices to be radiated of the high-power optical fiber laser, such as a pump LD, a gain optical fiber and a beam combiner for mounting the laser devices to be radiated in the high-power optical fiber laser. The upper side surface and the lower side surface of the heat sink body can be processed with threaded holes and optical fiber grooves as required to wait for the installation and positioning structure of the heat dissipation laser device. The side surface of the heat sink body is preset with a phase-change material filling port and a radiating piece penetrating hole for filling the phase-change material and extending the radiating piece.
The height of the heat sink cavity of the heat sink body (namely the height between the upper side surface and the lower side surface of the heat sink cavity) needs to ensure that the volume of the phase-change material in the heat sink cavity meets the heat dissipation requirement of a high-power optical fiber laser, and can be obtained according to the following formula:
h is the height of the heat sink cavity, P is the heat dissipation power of the high-power optical fiber laser, t is the working time required by the high-power optical fiber laser, M is the phase change latent heat of the phase change material, and rhoPhase (C)Is the density of the phase-change material, S is the total area of the upper and lower side surfaces of the cavity of the heat sink cavity, rhoBone bodyBulk density of the thermally conductive skeleton, pAggregate materialThe material density of the heat conducting framework is shown, A is a coefficient, A is smaller than 1-gamma, and gamma is the volume expansion rate of the phase change material during solid-liquid phase change. Furthermore, the areas of the upper side surface and the lower side surface of the heat sink cavity and the height of the heat sink cavity need to be considered comprehensively, and the heat sink heat dissipation effect is affected when the height of the heat sink cavity is too high, and the heat sink cavity is generally within 5 cm.
As a further improvement, the phase change material is a phase change point suitable various high phase change latent heat substances, such as paraffin, gallium-based liquid metal, inorganic salt solution, etc. The phase change point of the phase change material is within the temperature range required by the laser device to be radiated of the high-power optical fiber laser, and the heat sink cavity, the heat conduction framework and the radiating piece are not corroded. The weight of the phase-change material can be determined according to the required heat dissipation capacity and the phase-change latent heat of the phase-change material, and the working time of the high-power optical fiber laser can meet the requirement.
As a further improvement of the utility model, the radiating piece is dull and stereotyped heat pipe, and inside the one end of the dull and stereotyped heat pipe more than inserted the heat conduction skeleton, closely laminated with the heat conduction skeleton, the other end was worn the hole from the radiating piece that corresponds respectively and is stretched out outside the heat sink body for install refrigeration plant. The refrigerating equipment can be a TEC refrigerating sheet with a radiating fin, a water-cooling heat sink and the like, and the working temperature of the flat heat pipe is lower than the temperature of a phase change point of the phase change material.
As the utility model discloses a further improvement, the radiating piece is for coiling at the inside metal coil of heat conduction skeleton, and metal coil's both ends head is worn the hole from the radiating piece that corresponds respectively and is stretched out outside the heat sink body for installation refrigeration plant, refrigeration plant inject the refrigerant in to metal coil, and the refrigerant flows at the metal coil mesocycle, takes away the heat among the phase change material, and the operating temperature of refrigerant should be less than phase change material's phase transition point temperature among the metal coil. The coiling mode of the metal coil pipe is not limited, so that the metal coil pipe is uniformly distributed in the heat conducting framework.
Compared with the prior art, the utility model has the advantages of:
the utility model provides a high power fiber laser integration phase transition cold-storage is heat sink for the heat dissipation management of high power fiber laser can reduce thermal management system's volume weight and consumption by a wide margin, provides convenience for the mobile portable application of high power fiber laser.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
fig. 2 is a schematic longitudinal sectional view of a first preferred embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a first preferred embodiment of the present invention;
fig. 4 is a schematic structural diagram of the second preferred embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a second preferred embodiment of the present invention;
fig. 6 is a schematic structural view of a heat sink body in a third preferred embodiment of the present invention;
fig. 7 is a schematic structural view of an upper cover plate of a heat sink body according to a third preferred embodiment of the present invention;
fig. 8 is a schematic structural view of a lower cover plate of a heat sink body according to a third preferred embodiment of the present invention;
the reference numerals in the figures denote:
1. a heat sink body; 101. an upper cover plate; 102. a lower cover plate; 2. a heat sink cavity; 3. a thermally conductive skeleton; 4. a heat sink; 5. a phase change material filling port; 6. the heat sink passes through the hole.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the spirit of the present invention will be described in detail with reference to the accompanying drawings, and any person skilled in the art can change or modify the techniques taught by the present invention without departing from the spirit and scope of the present invention after understanding the embodiments of the present invention. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Referring to fig. 1 to 3, this embodiment provides a high power fiber laser integration phase transition cold-storage is heat sink, including heat sink body 1, be equipped with heat sink cavity 2 in the heat sink body 1, be provided with heat conduction skeleton 3 in the heat sink cavity 2, inside heat conduction skeleton 3 is equipped with heat dissipation piece 4 and heat dissipation piece 4 stretches out outside the heat sink body, heat sink cavity 2 intussuseption is filled with phase change material.
In this embodiment, the heat conducting framework 3 is a framework with a net structure made of a high heat conducting metal or graphite material. The overall dimension of the heat-conducting framework 3 is adapted to the heat sink cavity 2, and the upper side, the lower side, the left side and the right side of the heat-conducting framework 3 are tightly attached to the upper side, the lower side, the left side and the right side of the heat sink cavity 2. The heat conducting framework 3 is used for improving the heat conducting coefficient of the phase change material.
The heat sink body 1 is made of high-thermal-conductivity metal materials such as aluminum and copper. The upper side and the lower side of the heat sink body are used as mounting platforms of laser devices to be radiated of the high-power optical fiber laser, such as a pump LD, a gain optical fiber and a beam combiner for mounting the laser devices to be radiated in the high-power optical fiber laser. The upper and lower side surfaces of the heat sink body 1 can be processed with threaded holes and optical fiber grooves as required to wait for the installation and positioning structure of the heat dissipation laser device. A phase-change material filling port 5 and a radiating piece penetrating hole 6 are preset on the side surface of the heat sink body and used for filling the phase-change material and extending the radiating piece.
The height of its heat sink cavity of heat sink body 1 (the height between its upper and lower downside of heat sink cavity promptly) needs to ensure that the phase change material volume in the heat sink cavity satisfies high power fiber laser's heat dissipation demand, can try to obtain according to the following formula:
h is the height of the heat sink cavity, P is the heat dissipation power of the high-power optical fiber laser, t is the working time required by the high-power optical fiber laser, M is the phase change latent heat of the phase change material, and rhoPhase (C)Is the density of the phase-change material, S is the total area of the upper and lower side surfaces of the cavity of the heat sink cavity, rhoBone bodyBulk density of the thermally conductive skeleton, pAggregate materialThe material density of the heat conducting framework is shown, A is a coefficient, A is smaller than 1-gamma, and gamma is the volume expansion rate of the phase change material during solid-liquid phase change. Furthermore, the areas of the upper side surface and the lower side surface of the heat sink cavity and the height of the heat sink cavity need to be considered comprehensively, and the heat sink heat dissipation effect is affected when the height of the heat sink cavity is too high, and the heat sink cavity is generally within 5 cm.
The phase change material is various high phase change latent heat substances with proper phase change points, such as paraffin, gallium-based liquid metal, inorganic salt solution and the like. The phase change point of the phase change material is within the temperature range required by the laser device to be radiated of the high-power optical fiber laser, and the heat sink cavity, the heat conduction framework and the radiating piece are not corroded. The weight of the phase-change material can be determined according to the required heat dissipation capacity and the phase-change latent heat of the phase-change material, and the working time of the high-power optical fiber laser can meet the requirement.
In this embodiment, the heat dissipation member 4 is a flat heat pipe, one end of more than one flat heat pipe is inserted into the heat conduction framework 3 and tightly attached to the heat conduction framework 3, and the other end of each flat heat pipe extends out of the heat sink body 1 through the corresponding heat dissipation member through hole 6 for installing the refrigeration equipment. The refrigerating equipment can be a TEC refrigerating sheet with a radiating fin, a water-cooling heat sink and the like, and the working temperature of the flat heat pipe is lower than the temperature of a phase change point of the phase change material.
Referring to fig. 4 to 5, this embodiment provides a high power fiber laser integration phase transition cold-storage is heat sink, including heat sink body 1, be equipped with heat sink cavity 2 in the heat sink body 1, be provided with heat conduction skeleton 3 in the heat sink cavity 2, inside heat conduction skeleton 3 is equipped with heat dissipation piece 4 and heat dissipation piece 4 stretches out outside the heat sink body, heat sink cavity 2 intussuseption is filled with phase change material. Different with the high power fiber laser integration phase transition cold-storage heat sink that provides in fig. 1 to 3, this embodiment heat dissipation part 4 is for coiling at the inside metal coil pipe of heat conduction skeleton 3, and outside heat sink body 1 was stretched out from the heat dissipation part that corresponds 7 respectively to metal coil pipe's both ends head for install refrigeration plant, refrigeration plant injected the refrigerant into metal coil pipe, the refrigerant is the circulation flow in metal coil pipe, takes away the heat among the phase change material, the operating temperature of refrigerant should be less than phase change material's phase transition point temperature among the metal coil pipe. The coiling mode of the metal coil pipe is not limited, so that the metal coil pipe is uniformly distributed inside the heat conducting framework 3.
Referring to fig. 6 to 8, this embodiment provides a high power fiber laser integration phase transition cold-storage is heat sink, including heat sink body 1, be equipped with heat sink cavity 2 in the heat sink body 1, be provided with heat conduction skeleton 3 in the heat sink cavity 2, inside heat conduction skeleton 3 is equipped with heat dissipation piece 4 and heat dissipation piece 4 stretches out outside the heat sink body, heat sink cavity 2 intussuseption is filled with phase change material. The heat sink body 1 in this embodiment is formed by fastening an upper cover plate 101 and a lower cover plate 102, a groove for forming the phase change material filling port 5 and the heat sink penetration hole 6 is provided between the upper cover plate 101 and the lower cover plate 102, and the phase change material filling port 5 and the heat sink penetration hole 6 on the side surface of the heat sink body are formed after the upper cover plate 101 and the lower cover plate 102 are fastened. The processing method of the embodiment is as follows:
(1) preparing an upper cover plate 101 and a lower cover plate 102 of a heat sink cavity 1, wherein the two cover plates are buckled to form a heat sink body, and a heat sink cavity 2 is arranged in the heat sink body 1;
(2) and preparing the foam metal plate 2 with the length and width equal to those of the inner part of the heat sink cavity and the thickness of 1/2 of the inner part of the heat sink cavity. The whole formed by oppositely buckling the two foam metal plates has the same shape and size as the heat sink cavity 2.
(3) The opposite side of each metal foam plate is provided with a corresponding groove according to the size of the heat dissipation member, and the heat dissipation member can be clamped in the groove in the middle when the two metal foam plates are buckled. And then the two buckled foam metal plates are used as heat conducting frameworks 3 to be arranged in the heat sink cavity, and the upper side surface, the lower side surface, the left side surface and the right side surface of each heat conducting framework 3 are tightly attached to the upper side surface, the lower side surface, the left side surface and the right side surface of the heat sink cavity 2.
(4) And assembling the heat dissipation piece, the heat conduction framework and the upper and lower cover plates of the heat sink cavity together to form a heat sink body, and performing welding fastening and sealing treatment on the edge and the joint of the heat sink body.
(5) And filling the phase-change material through the phase-change material filling port, and then sealing the phase-change material filling port.
The utility model discloses all above embodiments still can adopt 3D to print the technique and print and form, adopt 3D to print the technique and once only print out heat sink body, heat conduction skeleton and radiating piece. When the heat dissipation piece is a flat heat pipe, only the heat sink body with the heat dissipation piece penetrating hole is printed, and then the flat heat pipe is inserted; when the heat dissipation piece is a metal coil, the metal coil is printed out synchronously; and finally, filling the phase-change material through the phase-change material filling port, and then sealing the phase-change material filling port.
The utility model discloses a use method:
(1) and (6) cooling. Before the phase change cold accumulation heat sink works, the phase change cold accumulation heat sink needs to be filled with cold firstly. When the heat radiating piece is a flat heat pipe, the cold surface of the independent TEC air cooling preparation device or the liquid cooling refrigerating block can be attached to the flat heat pipe outside the heat sink body for cold charging, and after the cold charging is finished, the refrigerating device can be removed. When the heat dissipation piece is a metal coil pipe, the two ends of the metal coil pipe are directly connected with the water outlet and the water inlet of the water cooler, cold filling is carried out, and after the cold filling is finished, the water cooler pipeline can be removed, and the two ends of the metal coil pipe are blocked.
(2) Cooling with cold. After the phase change cold accumulation heat sink finishes cold filling, the refrigeration equipment can be disconnected, and the laser can work for a certain time.
Through adopting the utility model discloses well phase transition cold-storage is heat sink, and high power fiber laser can work for a certain time under the condition of not connecting thermal management equipment, and the bulk weight of system will reduce by a wide margin, provides convenience for high power fiber laser's mobile application.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. High power fiber laser integration phase transition cold-storage is heat sink, its characterized in that, including the heat sink body, this internal heat sink cavity that is equipped with of heat sink, be provided with the heat conduction skeleton in the heat sink cavity, inside heat dissipation piece and the heat dissipation piece that are equipped with of heat conduction skeleton stretch out outside the heat sink body, the heat sink cavity intussuseption is filled with phase change material.
2. The high-power fiber laser integrated phase change cold storage heat sink according to claim 1, wherein the heat conducting framework is a net-shaped framework made of high heat conducting metal or graphite material.
3. The high-power fiber laser integrated phase change cold accumulation heat sink as claimed in claim 2, wherein the upper and lower sides of the heat conducting framework are tightly attached to the upper and lower sides of the heat sink cavity.
4. The high-power optical fiber laser integrated phase change cold storage heat sink as claimed in claim 2, wherein the heat sink body is processed by aluminum or copper; the upper side surface and the lower side surface of the heat sink body are used as mounting platforms of laser devices to be radiated of the high-power optical fiber laser.
5. The integrated phase change cold storage heat sink of the high-power optical fiber laser as claimed in any one of claims 2 to 4, wherein a phase change material filling port and a heat dissipation member penetrating hole are preset on the side surface of the heat sink body, and are respectively used for filling the phase change material and extending the heat dissipation member.
6. The integrated phase change cold accumulation heat sink for the high power optical fiber laser as claimed in claim 5, wherein the height of the heat sink cavity of the heat sink body is determined according to the following formula:
h is the height of the heat sink cavity, P is the heat dissipation power of the high-power optical fiber laser, t is the working time required by the high-power optical fiber laser, M is the phase change latent heat of the phase change material, and rhoPhase (C)Is the density of the phase-change material, S is the total area of the upper and lower side surfaces of the cavity of the heat sink cavity, rhoBone bodyBulk density of the thermally conductive skeleton, pAggregate materialThe material density of the heat conducting framework is shown, A is a coefficient, A is smaller than 1-gamma, and gamma is the volume expansion rate of the phase change material during solid-liquid phase change.
7. The high-power optical fiber laser integrated phase-change cold-storage heat sink according to claim 5, wherein the phase-change material is paraffin, gallium-based liquid metal or inorganic salt solution.
8. The integrated phase change cold storage heat sink of the high power fiber laser as claimed in claim 5, wherein the heat dissipation member is a flat heat pipe, one end of more than one flat heat pipe is inserted into the heat conducting framework and closely attached to the heat conducting framework, and the other end of each flat heat pipe extends out of the heat sink body from a corresponding heat dissipation member through hole for installing a refrigeration device.
9. The integrated phase change cold accumulation heat sink of the high power optical fiber laser as claimed in claim 8, wherein the refrigeration device is a TEC refrigeration plate with heat sink or a water cooling heat sink, and the operating temperature of the flat heat pipe is lower than the temperature of the phase change point of the phase change material.
10. The high-power optical fiber laser integrated phase change cold storage heat sink according to claim 5, wherein the heat dissipation member is a metal coil pipe coiled inside the heat conduction framework, two ends of the metal coil pipe respectively extend out of the heat sink body from corresponding heat dissipation member through holes for installing refrigeration equipment, the refrigeration equipment injects a refrigerant into the metal coil pipe, the refrigerant circularly flows in the metal coil pipe to take away heat in the phase change material, and the working temperature of the refrigerant in the metal coil pipe is lower than the temperature of a phase change point of the phase change material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121312769.9U CN214706575U (en) | 2021-06-11 | 2021-06-11 | Integrated phase change cold accumulation heat sink of high-power optical fiber laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121312769.9U CN214706575U (en) | 2021-06-11 | 2021-06-11 | Integrated phase change cold accumulation heat sink of high-power optical fiber laser |
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| CN214706575U true CN214706575U (en) | 2021-11-12 |
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| CN202121312769.9U Active CN214706575U (en) | 2021-06-11 | 2021-06-11 | Integrated phase change cold accumulation heat sink of high-power optical fiber laser |
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