CN111609387A - Illuminator cooling device and method - Google Patents
Illuminator cooling device and method Download PDFInfo
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- CN111609387A CN111609387A CN201910143212.8A CN201910143212A CN111609387A CN 111609387 A CN111609387 A CN 111609387A CN 201910143212 A CN201910143212 A CN 201910143212A CN 111609387 A CN111609387 A CN 111609387A
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- illuminator
- porous
- heat dissipation
- cavity
- heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
Abstract
The invention relates to the technical field of illuminator cooling, in particular to an illuminator cooling device and method. The illuminator cooling device comprises an illuminator and a heat dissipation mechanism, wherein the heat dissipation mechanism comprises a heat dissipation cavity, a porous framework and a porous medium, the porous framework is arranged in the heat dissipation cavity, the porous medium is filled in pores of the porous framework, and the porous framework and the porous medium are respectively made of phase-change materials. According to the illuminator cooling device and the illuminator cooling method, the heat dissipation mechanism is installed on the illuminator, the porous framework is arranged in the heat dissipation cavity, and the porous medium is filled in the pores of the porous framework, so that the device is simple and compact in structure, the porous framework and the porous medium are respectively made of the phase-change materials, the porous framework and the porous medium can respectively absorb heat and change phase when the illuminator works, and the illuminator can be efficiently cooled.
Description
Technical Field
The invention relates to the technical field of illuminator cooling, in particular to an illuminator cooling device and method.
Background
In recent years, the unmanned aerial vehicle mounted searchlight is widely applied to the fields of maritime rescue, personnel search and rescue, environmental exploration operation and the like, the high-power illuminator is mounted on the unmanned aerial vehicle, and the unmanned aerial vehicle has the advantages of small size, high flying speed, convenience in use and the like, can help search and rescue personnel to quickly find victims waiting for rescue at dark night or carry out exploration operation in a high-temperature and high-humidity environment near a fire scene, helps to explore the fire and the personnel trapped condition, provides precious field information and the best rescue opportunity for search and rescue, and has wide market application prospect.
When the illuminator mounted on the unmanned aerial vehicle is used at night, the heating power of the illuminator in the initial working stage is small, the power is rapidly increased in the normal working stage, the maintenance time is long, the heating phenomenon of the illuminator is more obvious along with the increase of the power of the illuminator, the normal operation of the illuminator is influenced, and the service life of the illuminator is also shortened. In order to ensure the illumination performance and the service life of the high-power illuminator, an independent heat dissipation device is often arranged in the high-power illuminator. Because the onboard load and the carrying space of the unmanned aerial vehicle are limited, the illuminator heat dissipation device carried on the unmanned aerial vehicle meets the heat dissipation requirement and also meets the onboard constraint. However, the conventional heat management methods such as air cooling, water cooling, semiconductor cooling and the like have limited heat dissipation capability, and the heat dissipation device has a complex structure and large mass of heat dissipation components, and is not suitable for being carried on an unmanned aerial vehicle.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a cooling device and a cooling method for an illuminator, which solve the problems of complex structure and limited heat dissipation capacity of the existing heat dissipation device for the illuminator.
(II) technical scheme
In order to solve the technical problem, the invention provides a cooling device of an illuminator, which comprises the illuminator and a heat dissipation mechanism which is connected with the illuminator in an installing way, wherein the heat dissipation mechanism comprises a heat dissipation cavity, a porous framework and a porous medium, the porous framework is arranged in the heat dissipation cavity, the porous medium is filled in pores of the porous framework, and the porous framework and the porous medium are respectively made of phase-change materials.
Further, the melting point of the porous medium is lower than or equal to the melting point of the porous skeleton.
Furthermore, a metal coating is arranged on the surface of the porous framework.
Specifically, the heat dissipation cavity is a cavity structure with an opening at one end, and the heat dissipation mechanism further comprises a cavity cover plate, wherein the cavity cover plate is installed at the opening of the heat dissipation cavity.
Specifically, the illuminator and the cavity cover plate are arranged opposite to each other on the heat dissipation cavity.
Specifically, a sealing ring is installed between the cavity cover plate and the heat dissipation cavity, and a sealing groove for installing the sealing ring is formed in the cavity cover plate or the heat dissipation cavity.
Further, the heat dissipation mechanism is mounted on the unmanned aerial vehicle holder; and a heat insulation plate is arranged between the unmanned aerial vehicle holder and the cavity cover plate.
Specifically, a heat expansion boss is further arranged between the heat dissipation cavity and the illuminator.
In order to solve the above technical problem, the present invention further provides a luminaire cooling method, which uses the above luminaire cooling apparatus, the method comprising the steps of:
s1, conducting heat generated by the illuminator during operation to the inside of the heat dissipation cavity;
s2, respectively absorbing heat and changing phase of the porous framework and the porous medium in the heat dissipation cavity, and cooling the illuminator;
and S3, after the illuminator works, cooling and solidifying the porous framework and the porous medium in the heat dissipation cavity respectively along with the reduction of the temperature, and finishing a working cycle.
Further, when the melting point of the porous medium is lower than the melting point of the porous skeleton, in step S2, the temperature inside the heat dissipation cavity first reaches the phase transition temperature of the porous medium, and the porous medium first absorbs heat to undergo phase transition, thereby achieving primary cooling of the illuminator; when the phase change of the porous medium is completed completely, the illuminator continues to work, the porous framework continues to absorb heat, and when the temperature reaches the phase change temperature of the porous framework, the porous framework absorbs heat and changes phase, so that the illuminator is further cooled;
in step S3, after the illuminator is operated, the porous skeleton is first cured and then the porous medium is gradually cured as the temperature is lowered.
(III) advantageous effects
The technical scheme of the invention has the following advantages:
according to the illuminator cooling device and the illuminator cooling method, the heat dissipation mechanism is installed on the illuminator, the porous framework is arranged in the heat dissipation cavity, and the porous medium is filled in the pores of the porous framework, so that the device is simple and compact in structure, the porous framework and the porous medium are respectively made of the phase-change materials, the porous framework and the porous medium can respectively absorb heat and change phase when the illuminator works, and the illuminator can be efficiently cooled.
According to the illuminator cooling device and method provided by the invention, when the porous medium and the porous skeleton are respectively made of the phase change materials with different melting points, and the melting point of the porous medium is lower than that of the porous skeleton, the porous medium firstly absorbs heat and changes phase to realize the initial cooling of the illuminator, and then the porous skeleton continuously absorbs heat and changes phase to realize the further cooling of the illuminator, so that the continuous cooling of the high-power illuminator is realized, multiple thermal shocks can be effectively responded, and the heat dissipation effect of the illuminator is further improved.
The illuminator cooling device and the illuminator cooling method are suitable for cooling work of a high-power illuminator carried by an unmanned aerial vehicle, perfect fit with the working time of the unmanned aerial vehicle is achieved, the problem that the traditional illuminator heat dissipation technology is difficult to carry with the unmanned aerial vehicle is effectively solved, not only is the continuous operation of the illuminator guaranteed, but also the endurance of the unmanned aerial vehicle can be prolonged, and the illuminator cooling device and the illuminator cooling method have great application prospect and popularization value.
Drawings
FIG. 1 is a schematic diagram of the structure of a cooling apparatus for a luminaire according to an embodiment of the present invention;
FIG. 2 is a view showing the structure of the heat dissipating mechanism and the illuminator mounted in the illuminator cooling device according to the embodiment of the present invention;
fig. 3 is an exploded view of the heat dissipation mechanism and the illuminator in the illuminator cooling device according to the embodiment of the invention.
In the figure: 1: an illuminator; 2: a heat dissipation cavity; 3: a porous skeleton; 4: a porous medium; 5: a cavity cover plate; 6: a heat insulation plate; 7: unmanned aerial vehicle cloud platform.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1-3, an embodiment of the present invention provides a luminaire cooling apparatus, including a luminaire 1 and a heat dissipation mechanism mounted and connected to the luminaire 1, wherein the luminaire 1 and the heat dissipation mechanism are detachably mounted therebetween.
The heat dissipation mechanism comprises a heat dissipation cavity 2, a porous framework 3 and a porous medium 4, the porous framework 3 is arranged in the heat dissipation cavity 2, and the porous medium 4 is filled in pores of the porous framework 3. The porous framework 3 and the porous medium 4 are made of phase-change materials respectively, and the porous framework 3 and the porous medium 4 can respectively generate phase change after absorbing heat.
Illuminator cooling device, the heat that illuminator 1 during operation produced can transmit extremely inside heat dissipation cavity 2, make porous skeleton 3 with porous medium 4 takes place the phase transition after the heat absorption respectively, thereby it is right to realize illuminator 1's high-efficient cooling, device simple structure is compact moreover, easy dismounting, it is convenient to maintain, can be used for the cooling heat dissipation of various high-power lighting apparatus.
In a specific embodiment of the present application, the melting point of the porous medium 4 may be the same as the melting point of the porous skeleton 3, so that the porous skeleton 3 and the porous medium 4 can simultaneously undergo a phase change after absorbing heat.
In the specific embodiment of the present application, the melting point of the porous medium 4 may be lower than the melting point of the porous skeleton 3, so that the porous medium 4 and the porous skeleton 3 successively undergo phase change in heat absorption, thereby realizing continuous cooling of the illuminator 1, providing a guarantee for continuous lighting operation of the illuminator 1, and in addition, effectively coping with multiple thermal shocks encountered in the working process of the illuminator.
In the specific embodiment of the present application, the porous medium 4 may be made of a single phase-change material, or may be made of a composite phase-change material, that is, the porous medium 4 may be made of two or more phase-change materials with different melting points.
When the porous medium 4 is made of the composite phase-change material, the melting point of any phase-change material forming the porous medium 4 is not higher than that of the porous skeleton 3. When the illuminator 1 works, the phase change materials forming the porous medium 4 can sequentially perform phase change in the heat absorption process, so that the illuminator 1 is further continuously cooled.
In the specific embodiment of this application, the phase change material that porous skeleton 3 adopted and the phase change material that porous medium 4 adopted all have the characteristics that the thermal conductance is high, the volume latent heat is big, the volume expansion rate is low, cooling efficiency is high. And the phase change material adopted by the porous framework 3 and the phase change material adopted by the porous medium 4 can be set according to actual use requirements. For example, the porous skeleton 3 may be made of bismuth or a bismuth-indium alloy or a bismuth-indium-tin alloy. The porous medium 4 can be made of metal phase-change materials with low melting points, such as gallium, gallium-indium alloy, gallium-indium-tin alloy and the like, and can also be made of non-metal phase-change materials.
In the specific embodiment of the present application, the surface of the porous framework 3 is provided with a metal plating layer, that is, the porous framework 3 is encapsulated in the metal plating layer. The metal coating has certain strength and is used for separating the phase change material of the porous framework 3 from the phase change material of the porous medium 4 after the porous framework 3 absorbs heat and changes phase to melt, so that the structure and the shape of the porous framework 3 are maintained.
Wherein, different metals can be selected according to actual use conditions to carry out plating on the surface of the porous framework 3. In this embodiment, the metal plating layer is preferably a copper plating layer, and a plating layer is formed on the surface of the porous skeleton 3 by using an electroplating or chemical plating process.
In a specific embodiment of the present application, the heat dissipation cavity 2 is a cavity structure with an opening at one end, the heat dissipation mechanism further includes a cavity cover plate 5 installed at the opening of the heat dissipation cavity 2, and the illuminator 1 and the cavity cover plate 5 are respectively installed at two opposite sides of the heat dissipation cavity 2.
The heat dissipation cavity 2 can be made of stainless steel or copper or a composite material of diamond and copper. The heat dissipation cavity cover plate 5 can be made of stainless steel or copper or a composite material of diamond and copper. In a preferred embodiment, the heat dissipation chamber 2 and the heat dissipation chamber cover plate 5 are made of copper.
In the specific embodiment of this application, illuminator 1 with connect through dismantling the connecting piece between the heat dissipation cavity 2, heat dissipation cavity 2 with connect through dismantling the connecting piece between the heat dissipation cavity apron 5 to be convenient for dismouting and maintenance, each spare part is convenient for change, is convenient for customize as required, and the flexibility is strong, long service life, reliable and stable.
In the specific embodiment of this application, cavity apron 5 with install the sealing washer between the heat dissipation cavity 2, cavity apron 5 or be equipped with on the heat dissipation cavity 2 and be used for the installation the sealed recess of sealing washer. The sealing ring can be made of nitrile rubber or silicon rubber or fluorine rubber or metal rubber. Through setting up the sealing washer can seal up the liquid phase change material after the endothermic phase transition.
In the specific embodiment of this application, heat dissipation mechanism install in unmanned aerial vehicle cloud platform 7. Specifically, the heat dissipation cavity 2 the cavity apron 5 is all through dismantling the connecting piece unmanned aerial vehicle cloud platform 7 is connected, is convenient for heat dissipation mechanism with unmanned aerial vehicle cloud platform 7 carries out the dismouting.
Wherein, the heat dissipation mechanism can move along with the motion of the unmanned aerial vehicle cloud deck 7, that is, the illumination angle of the illuminator 1 can be adjusted through the unmanned aerial vehicle cloud deck 7, thereby enhancing the environmental suitability of the illuminator 1.
In the specific embodiment of this application, unmanned aerial vehicle cloud platform 7 with still be equipped with heat insulating board 6 between the cavity apron 5, be used for reducing the influence to unmanned aerial vehicle cloud platform 7 when illuminator 1 dispels the heat, reduce the maintenance cost.
In a specific embodiment of the present application, a heat spreading boss (not shown) is further disposed between the heat dissipation cavity 2 and the luminaire 1 for more effectively conducting the heat of the luminaire 1 to the inside of the heat dissipation cavity 2.
In the specific embodiment of the present application, the illuminator 1 may adopt a high-power LED array or a metal halide lamp or a laser lamp, and the specific selection may be determined according to the illumination requirement of different applications.
The illuminator cooling device provided by the embodiment of the invention has the advantages of compact structure, small space required by installation, convenience in disassembly and assembly, convenience in maintenance, strong environmental adaptability, convenience in replacement of parts and customization as required, strong flexibility, long service life, stability and reliability. The porous framework 3 and the porous medium 4 are respectively made of phase-change materials, so that the porous framework 3 and the porous medium 4 can generate phase change after absorbing heat generated by the work of the illuminator 1, the illuminator 1 can be efficiently cooled, and the cooling device can be used for cooling and radiating various high-power illuminating apparatuses, and is particularly suitable for cooling and radiating the high-power illuminator carried by the unmanned aerial vehicle.
The embodiment of the invention also provides a cooling method of the illuminator, which adopts the cooling device of the illuminator of the embodiment, and the method specifically comprises the following steps:
s1, conducting heat generated by the illuminator 1 during operation to the interior of the heat dissipation cavity 2.
S2, the porous framework 3 and the porous medium 4 in the heat dissipation cavity 2 absorb heat and change phase respectively, and cooling of the illuminator 1 is achieved.
S3, after the illuminator 1 works, the porous framework 3 and the porous medium 4 in the heat dissipation cavity 2 are respectively cooled and solidified along with the temperature reduction, and a working period is completed.
Further, when the melting point of the porous medium 4 is the same as the melting point of the porous skeleton 3, in step S2, the phase change of the porous medium 4 and the phase change of the porous skeleton 3 gradually occur simultaneously after absorbing heat.
In step S3, after the illuminator is operated, the porous skeleton 3 and the porous medium 4 are gradually solidified simultaneously.
Further, when the melting point of the porous medium 4 is lower than the melting point of the porous skeleton 3, in step S2, the temperature inside the heat dissipation cavity 2 first reaches the phase transition temperature of the porous medium 4, and the porous medium 4 first absorbs heat to perform phase transition, so as to achieve the primary cooling of the illuminator 1. When the phase change of the porous medium 4 is completed completely, the illuminator 1 continues to work, the porous framework 3 continues to absorb heat, and when the temperature reaches the phase change temperature of the porous framework 3, the porous framework 3 absorbs heat and changes phase, so that the illuminator 1 is further cooled.
In step S3, after the illuminator 1 is operated, the porous skeleton 3 is first cured and then the porous medium 4 is gradually cured as the temperature is lowered.
According to the illuminator cooling method provided by the embodiment of the invention, the high-power illuminator 1 can be efficiently cooled through the phase change heat absorption of the porous framework 3 and the porous medium 4 in the heat dissipation cavity 2, so that not only can multiple thermal shocks encountered in the working process of the illuminator 1 be effectively coped with, but also the continuous operation of the illuminator 1 is guaranteed, meanwhile, the illuminator cooling method is suitable for cooling and heat dissipation of a high-power illuminator carried by an unmanned aerial vehicle, the perfect fit with the working time of the unmanned aerial vehicle is realized, and the illuminator cooling method has great application prospect and popularization value.
In summary, in the illuminator cooling device and method according to the embodiments of the present invention, the heat dissipation mechanism is installed on the illuminator, the porous skeleton is disposed in the heat dissipation cavity, and the porous medium is filled in the pores of the porous skeleton, so that the device structure is simple and compact, and the porous skeleton and the porous medium are made of phase change materials, so that the porous skeleton and the porous medium can absorb heat and change phase respectively when the illuminator works, thereby achieving efficient cooling of the illuminator.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, unless otherwise specified, "a plurality" means one or more; "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a illuminator cooling device, its characterized in that, including illuminator and with illuminator installation connection's heat dissipation mechanism, heat dissipation mechanism includes heat dissipation cavity, porous skeleton and porous medium, porous skeleton set up in the heat dissipation cavity, porous medium fill in the hole of porous skeleton, porous skeleton and porous medium adopt phase change material to make respectively.
2. A luminaire cooling arrangement according to claim 1, characterized in that the melting point of the porous medium is lower than or equal to the melting point of the porous skeleton.
3. A luminaire cooling arrangement according to claim 1, characterized in that the surface of the porous skeleton is provided with a metal coating.
4. A luminaire cooling arrangement as claimed in claim 1, wherein the heat sink cavity is an open-ended cavity structure, the heat sink mechanism further comprising a cavity cover plate mounted at the opening of the heat sink cavity.
5. A luminaire cooling arrangement according to claim 4, wherein the luminaire is disposed opposite the cavity cover plate over the heat sink cavity.
6. A luminaire cooling device as claimed in claim 5, wherein a sealing ring is mounted between the cavity cover and the heat sink cavity, and a sealing groove is provided on the cavity cover or the heat sink cavity for mounting the sealing ring.
7. A luminaire cooling arrangement as claimed in claim 5, wherein the heat dissipation mechanism is mounted to the drone pan head; and a heat insulation plate is arranged between the unmanned aerial vehicle holder and the cavity cover plate.
8. A luminaire cooling arrangement as claimed in claim 1, wherein a heat spreading boss is further provided between the heat dissipation cavity and the luminaire.
9. A method of cooling a lamp, characterized in that the method employs a lamp cooling apparatus as claimed in any one of claims 1 to 8, the method comprising the steps of:
s1, conducting heat generated by the illuminator during operation to the inside of the heat dissipation cavity;
s2, respectively absorbing heat and changing phase of the porous framework and the porous medium in the heat dissipation cavity, and cooling the illuminator;
and S3, after the illuminator works, cooling and solidifying the porous framework and the porous medium in the heat dissipation cavity respectively along with the reduction of the temperature, and finishing a working cycle.
10. A luminaire cooling method according to claim 9, characterized in that when the melting point of the porous medium is lower than the melting point of the porous skeleton,
in step S2, the temperature inside the heat dissipation cavity first reaches the phase transition temperature of the porous medium, and the porous medium first absorbs heat and changes phase, so as to achieve primary cooling of the illuminator; when the phase change of the porous medium is completed completely, the illuminator continues to work, the porous framework continues to absorb heat, and when the temperature reaches the phase change temperature of the porous framework, the porous framework absorbs heat and changes phase, so that the illuminator is further cooled;
in step S3, after the illuminator is operated, the porous skeleton is first cured and then the porous medium is gradually cured as the temperature is lowered.
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| CN201910143212.8A CN111609387A (en) | 2019-02-26 | 2019-02-26 | Illuminator cooling device and method |
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| CN201910143212.8A CN111609387A (en) | 2019-02-26 | 2019-02-26 | Illuminator cooling device and method |
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Application publication date: 20200901 |