WO2022001620A1 - 色轮散热装置及应用其的投影设备 - Google Patents

色轮散热装置及应用其的投影设备 Download PDF

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Publication number
WO2022001620A1
WO2022001620A1 PCT/CN2021/099520 CN2021099520W WO2022001620A1 WO 2022001620 A1 WO2022001620 A1 WO 2022001620A1 CN 2021099520 W CN2021099520 W CN 2021099520W WO 2022001620 A1 WO2022001620 A1 WO 2022001620A1
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WIPO (PCT)
Prior art keywords
color wheel
blades
heat dissipation
substrate
dissipation device
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PCT/CN2021/099520
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English (en)
French (fr)
Inventor
戴达炎
周浩
程名辉
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深圳光峰科技股份有限公司
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Publication of WO2022001620A1 publication Critical patent/WO2022001620A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings

Definitions

  • the present application relates to the field of lasers, and in particular, to a color wheel cooling device and projection equipment using the same.
  • a laser light source is used to generate a laser to excite a fluorescent color wheel to generate a color light sequence.
  • the energy of the photon is negatively correlated with the wavelength. The shorter the wavelength, the greater the photon energy. Therefore, when using the wavelength When the short blue laser photons excite the phosphor, it will release long-wavelength fluorescent photons with lower energy. At the same time, some blue laser photons are not absorbed by the phosphor and are converted into heat energy.
  • the increase The energy of the blue laser photons cannot simultaneously improve the luminous efficiency of the phosphor, which is the thermal quenching phenomenon of the phosphor, and the fluorescent color wheel needs to be dissipated.
  • the present application provides a color wheel heat dissipation device and a projection device using the same, so as to solve the problem of poor heat dissipation effect of the impeller in the prior art.
  • the color wheel heat dissipation device includes: a color wheel substrate on which a color wheel fluorescent part is arranged; a plurality of blades , arranged around the central axis of the color wheel substrate at intervals on one side of the main surface of the color wheel substrate, at least part of the inner side of the plurality of blades is located on the first annular ring, at least part of the plurality of blades The outer side is located on the second annular ring; the collector plate is annularly arranged around the central axis of the color wheel base plate and covers the side of the plurality of blades away from the color wheel base plate, wherein the collector plate At least part of the plurality of blades is covered along the radial direction of the color wheel substrate.
  • the current collecting plate is provided with an annular groove, and the annular groove is disposed around the central axis of the color wheel substrate.
  • the radial width of the annular groove is less than or equal to a quarter of the overall radial width of the current collecting plate.
  • the radial distance between the annular groove and the inner annular surface of the collector plate is smaller than the radial distance between the annular groove and the outer annular surface of the collector plate.
  • the inner diameter of the current collecting plate is greater than or equal to the inner diameter of the plurality of blades, and the outer diameter of the current collecting plate is smaller than or equal to the outer diameter of the plurality of blades.
  • the radial width of the current collecting plate is greater than or equal to half of the radial width of the vane.
  • the color wheel fluorescent part is fixed on the color wheel substrate by sintering.
  • the collector plate is fixed to the plurality of blades by means of reflow soldering or bonding.
  • the color wheel substrate is a ring-shaped substrate
  • the color wheel heat dissipation device further includes a driving component disposed on the inner circle of the color wheel substrate and connected to the color wheel substrate.
  • the assembly is used for integrally driving the color wheel substrate, the color wheel fluorescent part, the plurality of blades and the current collecting plate to rotate around the central axis of the color wheel substrate.
  • another technical solution adopted in the present application is to provide a projection device, wherein the projection device includes the color wheel cooling device described in any one of the above.
  • the flow direction of the airflow can be better controlled by setting the collector plate, and the backflow of the airflow can be reduced, so as to prevent the airflow from flowing out of the blade and directly entering the blade without the treatment of the cooling zone, which affects the heat dissipation effect.
  • the current collecting plate by arranging the current collecting plate, a certain heat exchange can be performed with the airflow and the blades, so as to increase the entire heat dissipation area, thereby improving the heat dissipation effect.
  • the end of the blade is partially closed by the current collecting plate, so that the noise caused by the impact of the airflow on the end of the blade can be reduced.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a color wheel cooling device provided by the present application.
  • FIG. 2 is a schematic cross-sectional structure diagram of the color wheel heat sink shown in FIG. 1;
  • FIG. 3 is a schematic cross-sectional structure diagram of the color wheel heat sink shown in FIG. 1 after removing the collector plate;
  • FIG. 4 is a schematic top view of the structure of the color wheel cooling device shown in FIG. 1 after removing the collector plate;
  • FIG. 5 is a schematic cross-sectional structure diagram of the second embodiment of the color wheel heat dissipation device provided by the present application.
  • FIG. 6 is a schematic top view of the structure of the wheel radiator according to the second embodiment provided by the present application.
  • Fig. 7 is the air intake schematic diagram of the color wheel cooling device provided in Fig. 1;
  • FIG. 8 is a schematic cross-sectional view of the air intake of the color wheel cooling device shown in FIG. 7;
  • FIG. 9 is a schematic cross-sectional view of the air intake of the color wheel cooling device shown in FIG. 5;
  • Fig. 10 is a schematic diagram showing the comparison of experimental data between the color wheel cooling device shown in Fig. 1 and the color wheel cooling device shown in Fig. 5;
  • FIG. 11 is a schematic structural diagram of a third embodiment of the color wheel heat dissipation device provided by the present application.
  • the present application provides a color wheel heat dissipation device 10 .
  • the color wheel heat dissipation device 10 includes a color wheel substrate 100 , a color wheel fluorescent portion 200 , a blade 300 and a collector plate 400 .
  • the color wheel fluorescent part 200 is disposed on the color wheel substrate 100 , and a plurality of blades 300 are arranged on one side of the main surface of the color wheel substrate 100 at intervals around the central axis of the color wheel substrate 100 . on the other side surface of the color wheel substrate 100 away from the color wheel fluorescent part 200; specifically, the blade 300 includes an inner side close to the central axis of the color wheel substrate 100 and an outer side away from the central axis of the color wheel substrate 100, and disposed on the inner side and the outer side
  • the ventilation surfaces between adjacent blades 300 are disposed opposite to each other.
  • the inner side of at least a portion of the plurality of vanes 300 is located on the first annular ring, and the outer side of at least a portion of the plurality of vanes 300 is located on the second annular ring.
  • the current collecting plate 400 is arranged in a ring shape around the central axis of the color wheel substrate 100 and covers the side of the plurality of blades 300 away from the color wheel substrate 100 , so that the color wheel substrate 100 rotates around the central axis of the color wheel substrate 100 , under the centrifugal action of the blades 300, the airflow will flow from the side of the collector plate 400 away from the plurality of blades 300 into the inner side of the plurality of blades 300, and flow out from the outer side of the plurality of blades 300, thereby taking away the color wheel substrate 100 and the plurality of blades 300.
  • the heat of the plurality of blades 300 is further dissipated to the fluorescent part 200 .
  • the plurality of blades 300 may present a whole, the inner side of the plurality of blades 300, that is, the side of the plurality of blades 300 that is close to the central axis of the color wheel substrate 100, and the outer side of the plurality of blades 300, that is, the plurality of blades 300 are far away from the color wheel.
  • One side of the central axis of the wheel base plate 100 is one side of the central axis of the wheel base plate 100 .
  • the color wheel substrate 100 may be a ceramic substrate with better thermal conductivity.
  • the current collecting plate 400 covers at least part of the plurality of blades 300 in the radial direction of the color wheel substrate 100 , that is, there is a partial area covered by the current collecting plate 400 in the radial direction of the plurality of blades 300 . Therefore, the interference of the blade 300 to the air intake area inside the blade 300 when the blade 300 is rotated can be reduced, thereby increasing the intake air volume.
  • the current collecting plate 400 by covering the current collecting plate 400 on the side of the plurality of blades 300 away from the color wheel substrate 100 , on the one hand, it can prevent the blades 300 from generating vortices in the direction away from the color wheel substrate 100 when the blades 300 rotate at high speed.
  • the low pressure flow reduces the impact on the air intake area inside the blade 300, so that the air intake area inside the blade 300 maintains a uniform airflow velocity field and pressure field, thereby increasing the air intake volume and improving the heat dissipation effect.
  • the flow direction of the airflow can be better controlled, and the backflow of the airflow can be reduced, thereby preventing the airflow from flowing out of the blade 300 and directly entering the blade 300 without the treatment of the cooling zone. heat radiation.
  • a certain heat exchange can be performed with the airflow and the blades 300, so as to increase the entire heat dissipation area, thereby improving the heat dissipation effect.
  • the noise caused by the impact of the airflow on the end of the blade 300 can be reduced.
  • the collector plate 400 is fixed to the plurality of blades 300 by means of reflow soldering or bonding.
  • the color wheel substrate 100 is an annular substrate.
  • the projected contour of the plurality of blades 300 on the color wheel substrate 100 is also annular.
  • the blade 300 is an arc-shaped piece, and includes two oppositely arranged ventilation surfaces, and the ventilation surface is an arc surface.
  • the ventilation surface is an arc surface.
  • the One ventilation surface is disposed opposite to the ventilation surface of the adjacent blade 300, and the ventilation surface of the blade 300, the ventilation surface of the adjacent blade 300, the main surface of the color wheel substrate 100 and the current collecting plate 400 form an air flow channel, and the air flow can be from many
  • the inner side of the plurality of blades 300 enters the air flow channel, and flows out from the outer side of the plurality of blades 300 after passing through the air flow channel.
  • the color wheel fluorescent part 200 is fixed on one surface of the color wheel substrate 100
  • the plurality of blades 300 are fixed on the other surface of the color wheel substrate 100
  • the current collecting plate 400 is disposed on the plurality of blades 300 , Thereby, it is fixed with the blade 300 . That is, the color wheel substrate 100 , the color wheel fluorescent part 200 , the plurality of blades 300 and the current collecting plate 400 form a fixed whole.
  • the color wheel heat sink 10 further includes a driving component 500 disposed on the inner circle of the color wheel substrate 100 and connected to the color wheel substrate 100.
  • the driving component 500 can be used to integrally drive the color wheel substrate 100, the color wheel fluorescent portion 200, and the plurality of blades. 300 and the current collecting plate 400 rotate around the central axis of the color wheel substrate 100 .
  • the inner and outer diameters of the current collecting plate 400 correspond to the inner and outer diameters of the blades 300 .
  • the inner diameter of the blades 300 may be 72 mm, and the outer diameter may be 100 mm.
  • the inner diameter of the current collecting plate 400 It can also be 72 mm and the outer diameter is 100 mm, that is, the current collecting plate 400 completely covers the blades 300 .
  • the driving assembly 500 includes a driving member 510 and a motor body 520, the motor body 520 is connected to the output end of the driving member 510, and the motor body 520 can be specifically connected to the color wheel through a radial connection column or a way of engaging with the color wheel.
  • the substrate 100 is connected.
  • the color wheel fluorescent part 200 may be circular, annular or other shapes, which are not limited here. Moreover, the color wheel fluorescent part 200 can be fixed to the color wheel substrate 100 by sintering, which can enhance the heat conduction effect between the color wheel fluorescent part 200 and the color wheel substrate 100 , thereby enhancing the heat dissipation effect on the color wheel fluorescent part 200 .
  • the collector plate 400 is further provided with an annular groove 410 , and the annular groove 410 is disposed around the central axis of the color wheel substrate 100 .
  • the airflow in the air intake area enclosed by the inner sides of the plurality of blades 300 will pass through the air passage and the outer sides of the plurality of blades 300 .
  • the air intake area forms a low pressure area, and the airflow of the entire color wheel heat sink 10 will enter the low pressure area, and continue to flow out through the airflow channel and through the outer sides of the plurality of blades 300 .
  • the outside air enters the air intake area of the color wheel heat sink 10 , and then the airflow in the air intake area enters the inner side of the plurality of blades 300 , and then passes through the air flow channels formed by the plurality of blades 300 and then flows from the blades 300
  • the outflow from the outside is a movement from an axial movement to a radial movement. After the airflow enters the airflow channel formed by the plurality of blades 300, it cannot be quickly converted from the axial movement to the radial movement, so a low-speed vortex will appear, making the airflow It cannot flow out from the outside of the plurality of blades 300 quickly, thus affecting the heat dissipation effect.
  • FIG. 8 the outside air enters the air intake area of the color wheel heat sink 10 , and then the airflow in the air intake area enters the inner side of the plurality of blades 300 , and then passes through the air flow channels formed by the plurality of blades 300 and then flows from the blades 300
  • the annular groove 410 by setting the annular groove 410 on the collector plate 400, the external air flow can enter the blade 300 from the annular groove 410. In this way, the low-speed vortex is disturbed, and the uniformity of the airflow and the intake air volume are improved to improve the heat dissipation effect. Furthermore, by arranging the annular groove 410 in the collector plate 400, the weight of the collector plate 400 can be reduced, thereby reducing the load of the driving assembly 500, reducing the energy loss and reducing the heat dissipation requirement.
  • the experimental data shows that the color wheel heat dissipation device 10 provided by this embodiment provides the annular groove 410 on the current collecting plate 400 , and performs data testing under the condition that other parameters are the same.
  • the temperature of the color wheel fluorescent part 200 and the temperature of the motor body 520 are relatively low, that is, the heat dissipation effect is further improved.
  • the radial width of annular groove 410 is less than or equal to one quarter of the overall radial width of current collector plate 400 .
  • the inner diameter of the annular groove 410 may be 76 mm and the outer diameter may be 82 mm.
  • the inner diameter of the annular groove 410 may be 82 mm, and the outer diameter may be 88 mm, etc., which are not limited here.
  • the radial distance between the annular groove 410 and the inner annular surface of the collector plate 400 is smaller than the radial distance between the annular groove 410 and the outer annular surface of the collector plate 400 . That is, the annular groove 410 is closer to the inner side of the current collecting plate 400, so that the low-speed vortex located at the inner side of the blade 300 can be better destroyed.
  • the inner diameter of the collector plate 400 is greater than or equal to the inner diameter of the plurality of blades 300
  • the outer diameter of the collector plate 400 is smaller than or equal to the outer diameter of the plurality of blades 300
  • the inner diameter of the plurality of blades 300 is the inner diameter of the entire plurality of blades 300
  • the outer diameter of the plurality of blades 300 is the outer diameter of the entire plurality of blades. That is, the collector plate 400 only covers the radial part of the blade 300 , thereby reducing the weight of the collector plate 400 , thereby reducing the load of the driving assembly 500 , reducing energy loss and reducing heat dissipation requirements.
  • the radial width of the collector plate 400 is greater than or equal to one-half the radial width of the vanes 300 .
  • the inner diameter of the blade 300 may be 72 mm, the outer diameter may be 100 mm, and the radial width may be 28 mm; the inner diameter of the collector plate 400 may be 76 mm, the outer diameter may be 96 mm, and the radial width may be 22 mm.
  • the projected area of the orthographic projection of the current collecting plate 400 on the color wheel substrate 100 is greater than or equal to half of the maximum area enclosed by the projection of the blades 300 on the color wheel substrate 100 .
  • the maximum area enclosed by the projection of the blades 300 on the color wheel substrate 100 is the area of the plurality of blades 300 and the difference between the blades 300 . The sum of the spaced areas.
  • the driving assembly 500 drives the plurality of blades 300 to rotate, due to the centrifugal action of the plurality of blades 300, the airflow between the blades 300 will be accelerated and flow out from the outside of the blades 300.
  • the velocity shows an upward gradient
  • the pressure of the air flow also shows an upward gradient, that is, the inner area of the blade 300 is the area with the lowest pressure, that is, the air intake area.
  • the airflow in the direction of 100 does work, and thus no vortex low pressure is generated, that is, the airflow in the area of the collector plate 400 away from the color wheel substrate 100 is close to a standard atmospheric pressure, so that a pressure difference is generated with the air intake area inside the blade 300, making the collector plate 400.
  • the present application also provides a projection device, which includes the color wheel cooling device 10 described in any of the above embodiments.
  • the flow direction of the airflow can be better controlled by setting the collector plate, and the backflow of the airflow can be reduced, so as to prevent the airflow from flowing out of the blade and directly entering the blade without the treatment of the cooling zone, which affects the heat dissipation effect.
  • the current collecting plate by arranging the current collecting plate, a certain heat exchange can be performed with the airflow and the blades, so as to increase the entire heat dissipation area, thereby improving the heat dissipation effect.
  • the end of the blade is partially closed by the current collecting plate, so that the noise caused by the impact of the airflow on the end of the blade can be reduced.
  • annular groove can be further arranged on the collector plate, so that the external air flow can enter the blade from the annular groove to disturb the low-speed vortex, thereby improving the uniformity of the air flow and the amount of intake air, so as to improve the heat dissipation. Effect.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)

Abstract

一种色轮散热装置（10）及应用其的投影设备，色轮散热装置（10）包括色轮基板（100）、色轮荧光部（200）、多个叶片（300）以及集流板（400），色轮基板（100）上设置有色轮荧光部（200）；多个叶片（300）环绕色轮基板（100）的中轴线间隔设置于色轮基板（100）的一侧主表面；集流板（400）绕色轮基板（100）的中轴线呈环形设置，并覆盖于多个叶片（300）远离色轮基板（100）的一侧；其中，集流板（400）沿色轮基板（100）的径向对多个叶片（300）进行局部覆盖，可以有效的对色轮荧光部（200）进行散热。

Description

色轮散热装置及应用其的投影设备 技术领域
本申请涉及激光器领域，特别涉及一种色轮散热装置及应用其的投影设备。
背景技术
目前，激光投影装置中，使用激光光源产生激光激发荧光色轮产生彩色光序列，在可见光范围内，光子的能量会与波长呈负相关，波长越短，光子能量越大，因此，当用波长较短的蓝激光光子激发荧光粉时，会释放出能量较低的长波长荧光光子，同时，存在部分蓝激光光子未被荧光粉吸收从而转换成热能，当荧光粉温度达到一定值时，增加蓝激光光子的能量无法同时提高荧光粉的发光效率，即为荧光粉的热淬灭现象，则需要对荧光色轮进行散热。
现有的色轮散热组件的叶轮在高速转动时，由于色轮散热组件中心进风口为低压区域，受高速旋转的叶轮干扰，装配在光机中时容易在叶轮上方产生漩涡低压流动，气流流动杂乱，造成色轮散热组件的进气量下降，从而影响色轮散热效率，并且气流从叶轮出口流出后，一部分流向光机内的降温区域，另一部分会在冲击色轮壳体后未流向光机的降温区直接沿叶轮的叶片面回流到叶轮中，造成散热风量的容积损失，影响了色轮散热效率。
实用新型内容
本申请提供一种色轮散热装置及应用其的投影设备，以解决现有技术叶轮散热效果较差的问题。
为解决上述技术问题，本申请采用的一个技术方案是：提供一种色轮散热装置，所述色轮散热装置包括：色轮基板，所述色轮基板上设置有色 轮荧光部；多个叶片，环绕所述色轮基板的中轴线间隔设置于所述色轮基板的一侧主表面，所述多个叶片中至少部分的内侧位于第一环形圈上，所述多个叶片中至少部分的外侧位于第二环形圈上；集流板，绕所述色轮基板的中轴线呈环形设置，并覆盖于所述多个叶片远离所述色轮基板的一侧，其中，所述集流板沿所述色轮基板的径向对所述多个叶片的至少部分覆盖。
根据本申请提供的一实施方式，所述集流板设置有环形槽，所述环形槽绕所述色轮基板的中轴线设置。
根据本申请提供的一实施方式，所述环形槽的径向宽度小于或等于所述集流板的整体径向宽度的四分之一。
根据本申请提供的一实施方式，所述环形槽与所述集流板的内环面之间的径向间距小于所述环形槽与所述集流板的外环面的径向间距。
根据本申请提供的一实施方式，所述集流板的内径大于或等于所述多个叶片的内径，所述集流板的外径小于或等于所述多个叶片的外径。
根据本申请提供的一实施方式，所述集流板的径向宽度大于或等于所述叶片的径向宽度的二分之一。
根据本申请提供的一实施方式，所述色轮荧光部通过烧结的方式固定于所述色轮基板上。
根据本申请提供的一实施方式，所述集流板通过回流焊或者粘结的方式与所述多个叶片固定。
根据本申请提供的一实施方式，所述色轮基板为环形基板，所述色轮散热装置还包括设置于所述色轮基板内圈且与所述色轮基板连接的驱动组件，所述驱动组件用于整体驱动所述色轮基板、所述色轮荧光部、所述多个叶片以及所述集流板绕所述色轮基板的中轴线进行转动。
为解决上述技术问题，本申请采用的另一个技术方案是：提供一种投影设备，所述投影设备包括上述中任一项所述的色轮散热装置。
有益效果：区别于现有技术，本申请通过在多个叶片远离色轮基板的一侧覆盖集流板，一方面，可以避免叶片在进行高速旋转时叶片在远离色轮基板的方向产生漩涡低压流动，进而减少对叶片内侧的进气区域的影响，使得叶片内侧的进气区域保持均匀的气流速度场和压力场，从而提高进气 量，以提高散热效果。且同时，通过设置集流板可以对气流的流动方向进行较好的控制，减少气流的回流，从而防止气流在流出叶片后，未经降温区的处理又直接进入到叶片中而影响到散热效果。进一步的，通过设置集流板可以与气流以及叶片进行一定的热交换，以提高整个散热面积，进而提高散热效果。另一方面，通过集流板将叶片的端部进行部分封闭，可以减少气流对叶片的端部冲击而产生的噪音。
附图说明
图1是本申请提供的色轮散热装置第一实施例的结构示意图；
图2是图1所示色轮散热装置的剖面结构示意图；
图3是图1所示色轮散热装置去除集流板后的剖面结构示意图；
图4是图1所示色轮散热装置去除集流板后的俯视结构示意图；
图5是本申请提供的色轮散热装置第二实施例的剖面结构示意图；
图6是本申请提供的第二实施例的轮散热装置的俯视结构示意图；
图7是图1提供的色轮散热装置的进气示意图；
图8是图7所示色轮散热装置的进气截面示意图；
图9是图5所示色轮散热装置的进气截面示意图；
图10是图1所示色轮散热装置和图5所示色轮散热装置的实验数据比对示意图；
图11是本申请提供的色轮散热装置第三实施例的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
另外，若本申请实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对 重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
请一并参阅图1-图10，本申请提供一种色轮散热装置10，该色轮散热装置10包括有色轮基板100、色轮荧光部200、叶片300以及集流板400。
如图1-图4所示，色轮荧光部200设置于色轮基板100上，多个叶片300则环绕色轮基板100的中轴线间隔设置于色轮基板100的一侧主表面，具体设置于色轮基板100远离色轮荧光部200的另一侧表面上；具体的，叶片300包括有靠近色轮基板100中轴线的内侧以及远离色轮基板100中轴线的外侧以及设置于内侧与外侧之间的通风表面，相邻的叶片300之间的通风表面相对设置。多个叶片300中的至少部分的内侧位于第一环形圈上，多个叶片300中至少部分的外侧位于第二环形圈上。
集流板400绕色轮基板100的中轴线呈环形设置，并覆盖于多个叶片300远离色轮基板100的一侧，从而使得色轮基板100绕色轮基板100的中轴线进行转动的过程中，气流在叶片300的离心作用下会从集流板400背离多个叶片300的一侧流入多个叶片300的内侧，并从多个叶片300的外侧流出，从而带走色轮基板100与多个叶片300的热量，进而完成对荧光部200的散热。可选的，多个叶片300可以呈现一个整体，多个叶片300的内侧即多个叶片300整体靠近色轮基板100中轴线的一侧，多个叶片300的外侧即多个叶片300整体远离色轮基板100中轴线的一侧。
在可选实施例中，色轮基板100具体可以是导热性较好的陶瓷基板。
在可选实施例中，集流板400沿色轮基板100的径向对多个叶片300的至少部分覆盖，即多个叶片300的径向上存在有部分区域被集流板400所覆盖。从而可以减少叶片300在进行旋转时对叶片300内侧进气区域的干扰，进而提高进气量。
上述实施例中，通过在多个叶片300远离色轮基板100的一侧覆盖集 流板400，一方面，可以避免叶片300在进行高速旋转时在叶片300在远离色轮基板100的方向产生漩涡低压流动，进而减少对叶片300内侧的进气区域的影响，使得叶片300内侧的进气区域保持均匀的气流速度场和压力场，从而提高进气量，以提高散热效果。且同时，通过设置集流板400可以对气流的流动方向进行较好的控制，减少气流的回流，从而防止气流在流出叶片300后，未经降温区的处理又直接进入到叶片300中而影响散热效果。进一步的，通过设置集流板400可以与气流以及叶片300进行一定的热交换，以提高整个散热面积，进而提高散热效果。另一方面，通过集流板400将叶片300的远离色轮基板一侧的端部的部分区域进行覆盖，可以减少气流对叶片300的端部冲击而产生的噪音。
在可选实施例中，集流板400通过回流焊或者粘结的方式与多个叶片300固定。
在可选实施例中，色轮基板100为环形基板，相应的，多个叶片300在色轮基板100的投影的轮廓也呈环形。
如图4所示，叶片300呈弧形片，包括有两个相对设置的通风表面，通风表面为弧面，对于每个叶片300而言，存在有相邻的两个叶片300，叶片300的一个通风表面与相邻的叶片300的通风表面相对设置，且叶片300的通风表面、相邻叶片300的通风表面、色轮基板100的主表面以及集流板400形成气流通道，气流可以从多个叶片300的内侧进入该气流通道，并经由气流通道后从多个叶片300的外侧流出。
如图1所示，色轮荧光部200固定于色轮基板100的一表面，而多个叶片300固定于色轮基板100的另一表面，且集流板400设置于多个叶片300上，从而与叶片300固定。即色轮基板100、色轮荧光部200、多个叶片300以及集流板400形成一个固定整体。色轮散热装置10还包括设置于色轮基板100内圈且与色轮基板100连接的驱动组件500，驱动组件500则可以用于整体驱动色轮基板100、色轮荧光部200、多个叶片300以及集流板400绕色轮基板100的中轴线进行转动。
在可选实施例中，集流板400的内外径与叶片300的内外径相对应，可选的，叶片300的内径可以为72mm，外径可以为100mm，相应的，集 流板400的内径也可以为72mm，外径为100mm，即集流板400对叶片300进行全覆盖。
在可选实施例中，驱动组件500包括有驱动件510与马达体520，马达体520与驱动件510的输出端连接，马达体520具体可以通过径向连接柱或者卡合的方式与色轮基板100进行连接。
在可选实施例中，色轮荧光部200可以为圆形、环形或者其他形状，这里不做限定。且色轮荧光部200可以通过烧结的方式与色轮基板100进行固定，可以增强色轮荧光部200与色轮基板100之间的导热效果，进而增强对色轮荧光部200的散热效果。
如图5和图6所示，集流板400还设置有环形槽410，该环形槽410绕色轮基板100的中轴线进行设置。
如图7和图8所示，驱动组件500在带动多个叶片300旋转的过程中，多个叶片300的内侧所围合的进气区域的气流会经由气流通道并通过多个叶片300的外侧流出，此时进气区域形成低压区域，则整个色轮散热装置10的气流会进入到该低压区域，并继续经由气流通道并通过多个叶片300的外侧流出。
如图8所示，外界的空气进入到色轮散热装置10的进气区域，随后进气区域的气流进入多个叶片300的内侧，随后经由多个叶片300所形成的气流通道再从叶片300的外侧流出是一个轴向运动到径向过程的运动，在气流进入到多个叶片300所形成的气流通道后，无法快速从轴向运动转换成径向运动，从而会出现低速旋涡，使得气流无法快速的从多个叶片300的外侧流出，从而影响到散热效果，如图9所示，通过在集流板400上设置环形槽410，可以使得外界的气流从环形槽410进入到叶片300中从而对低速旋涡进行扰乱，进而提高气流的均匀性与进气量，以提高散热效果。且进一步，通过在集流板400设置环形槽410，可以减少集流板400的重量，从而减少驱动组件500的负荷，减少能量损耗并降低散热需求。
如图8所示，气流在进入多个叶片300所形成的气流通道后，会在靠近多个叶片300的内侧形成低速旋涡，而如图9所示，通过设置环形槽410，外界的气流可以通过环形槽410进行到叶片300中，从而对低速旋涡进行 扰乱。
如图10所示，实验数据中显示，本实施例提供的色轮散热装置10通过在集流板400设置环形槽410，在其他参数相同的情况下进行数据测试，相比上述实施例中的色轮散热装置10而言，无论是色轮荧光部200的温度还是马达体520的温度均较低，即散热效果有了进一步的提升。
在可选实施例中，环形槽410的径向宽度小于或等于集流板400的整体径向宽度的四分之一。例如，环形槽410的内径可以为76mm，外径可以为82mm。或者环形槽410的内径可以为82mm，外径可以为88mm等，这里不做限定。
在可选实施例中，环形槽410与集流板400的内环面之间的径向间距小于环形槽410与集流板400的外环面的径向间距。即环形槽410更为靠近集流板400的内侧，从而可以更好的对位于叶片300内侧的低速旋涡进行破坏。
如图10所示，在一实施例中，集流板400的内径大于或等于多个叶片300的内径，集流板400的外径小于或等于多个叶片300的外径。多个叶片300的内径即多个叶片300整体的内径，多个叶片300的外径即多个叶片整体的外径。即集流板400只对叶片300在径向的部分进行覆盖，从而可以减少集流板400的重量，从而减少驱动组件500的负荷，减少能量损耗并降低散热需求。
在可选实施例中，集流板400的径向宽度大于或等于叶片300的径向宽度的二分之一。例如叶片300的内径可以为72mm，外径可以为100mm，径向宽度为28mm；集流板400的内径可以为76mm，外径可以为96mm，径向宽度为22mm。
在可选实施例中，集流板400在色轮基板100上的正投影的投影面积要大于或等于叶片300在色轮基板100上的投影所围合的最大面积的二分之一。具体的，由于多个叶片300间隔设置，即多个叶片300之间存在有间隔区域，叶片300在色轮基板100上的投影所围合的最大面积即多个叶片300的面积与叶片300之间的间隔面积的和。
就上述结构阐述工作原理：
驱动组件500在驱动多个叶片300进行旋转时，由于多个叶片300的离心作用，叶片300之间的气流会加速并从叶片300的外侧流出，在由内向外的径向方向上，气流的速度呈上升梯度，而气流的压力也呈上升梯度，即叶片300的内侧区域为压力最低的区域，即为进气区域，由于集流板400的作用，使得叶片300不会对远离色轮基板100方向的气流做功，进而不会产生漩涡低压，即集流板400远离色轮基板100的区域的气流接近一个标准大气压，从而与叶片300的内侧的进气区域产生压力差，使得集流板400远离色轮基板100的区域的气流在压力差的作用下快速进行轴向运动进入到叶片300的进气区域，并经由叶片300后作径向运动，最终形成高速气流从叶片300的外侧流出，从而带动色轮基板100与叶片300的热量，进而对色轮荧光部200以及驱动组件500进行散热。
本申请还提供一种投影设备，该投影设备包括上述任一实施例中所述的色轮散热装置10。
综上所述，本申请通过在多个叶片远离色轮基板的一侧覆盖集流板，一方面，可以避免叶片在进行高速旋转时在叶片在远离色轮基板的方向产生漩涡低压流动，进而减少对叶片内侧的进气区域的影响，使得叶片内侧的进气区域保持均匀的气流速度场和压力场，从而提高进气量，以提高散热效果。且同时，通过设置集流板可以对气流的流动方向进行较好的控制，减少气流的回流，从而防止气流在流出叶片后，未经降温区的处理又直接进入到叶片中而影响到散热效果。进一步的，通过设置集流板可以与气流以及叶片进行一定的热交换，以提高整个散热面积，进而提高散热效果。另一方面，通过集流板将叶片的端部进行部分封闭，可以减少气流对叶片的端部冲击而产生的噪音。另一方面，还可以进一步在集流板上设置环形槽，从而可以使得外界的气流从环形槽进入到叶片中从而对低速旋涡进行扰乱，进而提高气流的均匀性与进气量，以提高散热效果。
以上仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结果或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (10)

  1. 一种色轮散热装置，其特征在于，所述色轮散热装置包括：
    色轮基板，所述色轮基板上设置有荧光部；
    多个叶片，环绕所述色轮基板的中轴线间隔设置于所述色轮基板的一侧主表面，所述多个叶片中至少部分的内侧位于第一环形圈上，所述多个叶片中至少部分的外侧位于第二环形圈上；
    集流板，绕所述色轮基板的中轴线呈环形设置，并覆盖于所述多个叶片远离所述色轮基板的一侧；
    其中，所述集流板沿所述色轮基板的径向对所述多个叶片的至少部分覆盖。
  2. 根据权利要求1所述的色轮散热装置，其特征在于，所述集流板设置有环形槽，所述环形槽绕所述色轮基板的中轴线设置。
  3. 根据权利要求2所述的色轮散热装置，其特征在于，所述环形槽的径向宽度小于或等于所述集流板的整体径向宽度的四分之一。
  4. 根据权利要求2所述的色轮散热装置，其特征在于，所述环形槽与所述集流板的内环面之间的径向间距小于所述环形槽与所述集流板的外环面的径向间距。
  5. 根据权利要求1所述的色轮散热装置，其特征在于，所述集流板的内径大于或等于所述多个叶片的内径，所述集流板的外径小于或等于所述多个叶片的外径。
  6. 根据权利要求1所述的色轮散热装置，其特征在于，所述集流板的径向宽度大于或等于所述叶片的径向宽度的二分之一。
  7. 根据权利要求1所述的色轮散热装置，其特征在于，所述色轮荧光部通过烧结的方式固定于所述色轮基板上。
  8. 根据权利要求1所述的色轮散热装置，其特征在于，所述集流板通过回流焊或者粘结的方式与所述多个叶片固定。
  9. 根据权利要求1所述的色轮散热装置，其特征在于，所述色轮基板 为环形基板，所述色轮散热装置还包括设置于所述色轮基板内圈且与所述色轮基板连接的驱动组件，所述驱动组件用于整体驱动所述色轮基板、所述色轮荧光部、所述多个叶片以及所述集流板绕所述色轮基板的中轴线进行转动。
  10. 一种投影设备，其特征在于，所述投影设备包括权利要求1-9中任一项所述的色轮散热装置。
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CN212846325U (zh) * 2020-06-30 2021-03-30 深圳光峰科技股份有限公司 色轮散热装置及应用其的投影设备

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CN114815475A (zh) * 2022-05-20 2022-07-29 深圳市火乐科技发展有限公司 散热结构和投影设备
CN114815475B (zh) * 2022-05-20 2024-04-02 深圳市火乐科技发展有限公司 散热结构和投影设备

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