WO2017215345A1 - 色轮散热装置及具有该散热装置的投影设备 - Google Patents

色轮散热装置及具有该散热装置的投影设备 Download PDF

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Publication number
WO2017215345A1
WO2017215345A1 PCT/CN2017/081203 CN2017081203W WO2017215345A1 WO 2017215345 A1 WO2017215345 A1 WO 2017215345A1 CN 2017081203 W CN2017081203 W CN 2017081203W WO 2017215345 A1 WO2017215345 A1 WO 2017215345A1
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WO
WIPO (PCT)
Prior art keywords
cavity
color wheel
heat sink
heat
color
Prior art date
Application number
PCT/CN2017/081203
Other languages
English (en)
French (fr)
Inventor
杜伦春
黄旻
闵岚
李屹
Original Assignee
深圳市光峰光电技术有限公司
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Publication date
Application filed by 深圳市光峰光电技术有限公司 filed Critical 深圳市光峰光电技术有限公司
Priority to JP2018545862A priority Critical patent/JP6728379B2/ja
Priority to EP17812457.4A priority patent/EP3413129B1/en
Priority to US16/081,408 priority patent/US11137669B2/en
Publication of WO2017215345A1 publication Critical patent/WO2017215345A1/zh

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Classifications

    • 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
    • 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
    • G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
    • G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
    • 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
    • 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
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • 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
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/08—Sequential recording or projection

Definitions

  • the invention belongs to the technical field of color wheel heat dissipation, and particularly relates to a color wheel heat dissipation device and a projection device having the same.
  • a color light sequence is generated by laser excitation of a fluorescent color wheel, wherein the laser light is generated by a laser light source.
  • the thermal power consumption on the color wheel also increases. If the heat dissipation of the color wheel is poor, the efficiency of the phosphor to be excited light is greatly reduced, and even the damage of the color wheel itself is caused.
  • the color wheel mainly exchanges heat with air through high-speed rotation.
  • FIG. 1 and 2 are schematic structural views of a color wheel heat dissipating device in the prior art.
  • the first housing 100', the first fan 300', the first color wheel 800', the first external air duct 170', the first outer heat exchanger 500', and the first housing 100' are first.
  • the cold airflow of the existing color wheel heat dissipating device enters the first housing 100' through the first air inlet 160' through the first air inlet 160', and the cold airflow flows through the first housing 100' and then from the first air outlet 190. 'Outflow.
  • the cold air flow generally first dissipates heat from the surface of the first color wheel 800', and then dissipates heat from the rotating shaft of the first color wheel 800'. Since the high temperature resistance of the color wheel rotating shaft is often lower than the color wheel surface, when the color wheel is still within its temperature range, the color wheel rotating shaft has exceeded its temperature resistance range, thereby causing the rotation of the first color wheel 800'.
  • the heat dissipation effect of the shaft is lowered, and the performance of the first color wheel 800' is lowered.
  • the first outer heat exchanger 500', the first outer air duct 170', the first fan 300' and the first housing 100' are separately provided, occupying a large space, and having many assembly processes.
  • the invention provides a color wheel heat dissipating device and a projection device having the same, which can maximize the heat exchange rate in the color wheel cavity, improve the color wheel performance, and reduce the temperature of the color wheel, especially the color wheel rotating shaft, to improve Product efficiency and longevity purposes.
  • the present invention provides a color wheel heat dissipating device and a projection device having the same, the color wheel heat dissipating device comprising a housing, a color wheel, a built-in heat sink and a fan, wherein
  • the housing includes a first cavity, a second cavity, and a third cavity that are in communication with each other, and the first cavity and the second cavity are sequentially disposed in the airflow direction;
  • the built-in heat sink is located in the first cavity
  • the fan is located in the second cavity
  • the color wheel is located in the third cavity.
  • the color wheel heat dissipating device as described above, wherein the first cavity includes an air inlet, and the first cavity communicates with the inside of the third cavity through the air inlet.
  • the color wheel heat dissipating device as described above further comprising an external heat sink and a heat pipe, wherein the external heat sink is thermally connected to the built-in heat sink through the heat pipe.
  • the color wheel heat sink as described above further comprising a mounting plate, wherein the heat pipe is fixedly coupled to the housing through the mounting plate.
  • the color wheel heat dissipating device as described above, wherein the air flow sequentially circulates along the third cavity, the first cavity and the second cavity.
  • the present invention also proposes a projection apparatus, wherein the projection apparatus comprises the color wheel heat sink of any of the above.
  • the fan and the built-in heat sink are placed in the same casing, and the fan is located downstream of the radiator in the flow direction of the airflow in the casing, so that Allowing the fan to operate at a relatively low temperature increases the life of the fan.
  • the cold airflow discharged from the fan directly acts on the rotating shaft of the color wheel, thereby maximally reducing the temperature of the rotating shaft of the color wheel, improving the performance of the color wheel, and improving the product.
  • the purpose of efficiency and longevity is achieved by adopting a baffle structure at the exhaust port.
  • the heat inside the casing is effectively transmitted to the outside of the casing, which effectively realizes heat exchange inside and outside the casing, reduces the temperature inside the casing, and effectively improves the product. Use efficiency and longevity.
  • 1 and 2 are schematic structural views of a prior art color wheel heat sink
  • FIG. 3 and FIG. 4 are schematic diagrams showing the structure of a color wheel heat dissipating device and a color wheel heat dissipating device in the projection device having the same according to the present invention
  • FIG. 5 is a schematic structural view of a color wheel heat dissipating device and a color wheel heat dissipating device in the projection device having the same according to the present invention.
  • 100' first housing, 160': first built-in air duct, 170': first external air duct;
  • 300 fan, 300': first fan
  • 500 external heat sink
  • 500' first external heat sink
  • 800 Color wheel
  • 800 Color wheel
  • the color wheel heat sink includes a housing 100, a color wheel 800, a built-in heat sink 200, and a fan 300.
  • the housing 100 includes a first cavity 110, a second cavity 120, and a third cavity 130 that communicate with each other.
  • the first cavity 110 and the second cavity 120 are sequentially disposed in the airflow direction.
  • the built-in heat sink 200 is located within the first cavity 110.
  • the fan 300 is located within the second cavity 120.
  • the color wheel 800 is located within the third cavity.
  • the housing 100 includes a first cavity 110, a second cavity 120, and a third cavity 130 that are in communication with each other and in which the airflow can circulate.
  • the first cavity 110 and the second cavity 120 respectively include a built-in heat sink 200 and a fan 300.
  • the first cavity 110 and the second cavity 120 form a heat dissipation cavity.
  • the airflow within the third cavity 130 enters the interior of the first cavity 100.
  • the airflow passes through a built-in heat sink 200 (such as a semiconductor refrigerator, which is made using a Peltier effect of a semiconductor material.
  • the so-called Peltier effect refers to a galvanic couple when a direct current is passed through two semiconductor materials. The phenomenon that one end absorbs heat and one end releases heat.) After heat exchange, a cold air flow is generated in the first cavity 110.
  • the cold gas stream is further delivered to the interior of the second chamber 120.
  • the cold airflow inside the second cavity 120 is again sent to the inside of the third cavity 130 by the action of the fan 200, and the rotating shaft of the color wheel 800 is cooled.
  • the color wheel rotating shaft described herein includes a motor shaft that drives the rotation of the color wheel or an adapter shaft that connects the color wheel and the motor.
  • the third cavity 130 serves as a color wheel cavity for accommodating the color wheel 800. At the same time, the color wheel rotating shaft that drives the color wheel to rotate is also located inside the third cavity 130.
  • the fan 300 is located downstream of the built-in heat sink 200 in the direction of the air flow.
  • the airflow drawn by the fan 300 is a cold airflow, so that the fan 300 can be operated at a relatively low temperature, which improves the service life of the fan 300.
  • the first cavity 110 further includes an air inlet 140.
  • the first cavity 110 is connected to the inside of the third cavity 130 through the air inlet 140.
  • the hot gas flow inside the third cavity 130 enters the interior of the first cavity 110 through the suction port 140, performs heat exchange through the built-in heat sink 200, and forms a relatively low temperature cold air flow.
  • the second cavity 120 includes an exhaust port 150.
  • the second cavity 120 is in communication with the interior of the third cavity 130 through the exhaust port 150 .
  • the cold airflow inside the second cavity 120 enters the inside of the third cavity 130 through the exhaust port 150, and cools the color wheel rotating shaft.
  • the opening position of the exhaust port 150 is opposite to the rotation axis of the color wheel 800.
  • the cool air discharged from the exhaust port 150 directly acts on the rotating shaft of the color wheel 800.
  • Such a structural design can maximize the heat exchange rate inside the casing, reduce the temperature of the color wheel rotating shaft, and improve the performance of the color wheel, thereby improving the efficiency and service life of the product.
  • the color wheel heat sink further includes a baffle 400.
  • the baffle 400 is located at the exhaust port 150 and extends into the third cavity 130.
  • the arrangement of the baffle 400 ensures that the cold air discharged from the exhaust port 150 can directly and accurately act on the rotating shaft of the color wheel 800.
  • the output airflow of the fan 200 is venting the rotating shaft of the coloring wheel 800 under the action of the baffle 400. Therefore, the cold airflow first dissipates heat to the rotating shaft of the color wheel 800, and then dissipates heat to the surface of the color wheel 800. Therefore, the rotating shaft of the color wheel 800 obtains a good heat dissipation effect, which is beneficial to improving product efficiency and service life.
  • the arrangement of the baffle 400 can prevent the cold airflow cooled by the built-in heat sink 200 discharged from the exhaust port 150 from being directly sucked into the air intake port 140 in addition to the function of guiding the flow of the air flow, and the color is not colored.
  • the wheel 800 and the color wheel 800 rotate the shaft for heat dissipation. Avoid unnecessary energy waste.
  • baffle 400 can also be formed integrally with the housing 100. It is ensured that the structure can ensure that the cold airflow discharged from the exhaust port 150 directly acts on the rotating shaft of the color wheel 800.
  • the color wheel heat sink further includes an external heat sink 500 and a heat pipe 600.
  • the external heat sink 500 is connected to the built-in heat sink 200 through the heat pipe 600.
  • the built-in heat sink 200, the external heat sink 500, and the heat pipe 600 are combined to form a heat pipe heat sink.
  • the built-in heat sink 200 is connected to the external heat sink 500 through a heat pipe 600.
  • the built-in heat sink 200 is implemented to conduct heat in the housing 100 to the outside of the housing 100 through the external heat sink 500.
  • the temperature of the gas stream in the second chamber 120 is lowered to form a relatively low temperature cold gas stream.
  • the cold air stream is used to subsequently cool the rotating shaft of the color wheel 800.
  • the color wheel heat sink of this embodiment includes two heat pipes 600. One end of the heat pipe 600 is connected to the built-in heat sink 200, and the other end is connected to the external heat sink 500.
  • the heat pipe 600 may be a heat pipe.
  • the heat pipe uses evaporative cooling, so that the temperature difference between the two ends of the heat pipe is large, so that the heat is quickly conducted.
  • the inside of the heat pipe is evacuated to a negative pressure state, and the inside thereof is filled with an appropriate liquid. This liquid has a low boiling point and is easily volatilized.
  • the tube wall has a wick, which is composed of a capillary porous material. When one end of the heat pipe is heated, the liquid in the capillary evaporates rapidly, and the steam flows to the other end under a slight pressure difference, and the energy is released and recondensed into a liquid. The condensed liquid is returned to the end by capillary action along the porous material. This cycle reciprocates, transferring heat from one end of the heat pipe to the other end.
  • the end of the heat pipe 600 connected to the built-in heat sink 200 transfers heat to one end connected to the external heat sink 500. Heat is transferred to the outside through the external heat sink 500. At the same time, the temperature inside the built-in heat sink 200 is lowered.
  • the color wheel heat sink further includes a mounting plate 700.
  • the heat pipe 600 is fixedly connected to the housing 100 through the mounting plate 700.
  • the mounting plate is located outside the housing 100 and is fixedly coupled to the housing.
  • the heat pipe 600 for performing heat exchange inside and outside the casing is fixedly connected to the casing 100 through the mounting plate 700.
  • the color wheel 800 operates normally. At the same time, a part of the heat is generated inside the third cavity 130 due to the high speed rotation of the color wheel 800 and the absorption of the light beam. The heat is mixed in the gas stream to form a hot gas stream that enters the interior of the first cavity 110 through the suction port 140.
  • the hot air flow inside the first cavity 110 passes through the built-in heat sink 200, and the heat contained in the air flow is transmitted to the external heat sink 500 through the heat pipe 600.
  • the external heat sink 500 transfers heat to the external space.
  • the temperature within the first cavity 110 is lowered to form a cold gas stream.
  • the cold airflow inside the second cavity 120 is discharged from the exhaust port 150 by the action of the fan 300.
  • the cold airflow discharged from the exhaust port 150 can act on the rotating shaft of the color wheel 800 to lower the temperature of the rotating shaft of the color wheel 800, thereby improving the working performance of the color wheel 800.
  • a baffle 400 can be provided at the exhaust port 150.
  • the deflector 400 can ensure that the cold air discharged from the exhaust port 150 acts on the rotating shaft of the color wheel 800 further through the deflector.
  • the cold airflow entering the interior of the third cavity 130 first dissipates heat from the rotating shaft of the color wheel 800, and then dissipates heat from the surface of the color wheel 800, thereby improving the performance of the color wheel 800.
  • the cold airflow After the cold airflow is heat-exchanged in the third cavity 130, it enters the inside of the first cavity 110 through the suction port 140 again, and heat exchange is performed by the built-in heat sink 200. In such a reciprocating cycle, the rotating shaft of the color wheel 800 is continuously cooled.
  • the present invention also proposes a projection apparatus, wherein the projection apparatus comprises the color wheel heat sink of any of the above embodiments.
  • the heat exchange rate in the color wheel cavity can be maximized, the performance of the color wheel can be improved, and the temperature of the color wheel shaft can be reduced, thereby achieving the purpose of improving product efficiency and life.

Abstract

一种色轮散热装置，包括：壳体（100）、色轮（800）、内置散热器（200）以及风扇（300）。壳体（100）包括相互连通的第一腔体（110）、第二腔体（120）以及第三腔体（130）。第一腔体（110）和第二腔体（120）沿气流方向依次设置。内置散热器（200）位于第一腔体（110）内，风扇（300）位于第二腔体（120）内，色轮（800）位于第三腔体（130）内。还公开了具有这种色轮散热装置的投影设备。这种色轮散热装置可提高色轮腔体内的热交换律，降低色轮轴的温度，提高产品效率和寿命。

Description

色轮散热装置及具有该散热装置的投影设备 技术领域
本发明属于色轮散热技术领域，具体涉及色轮散热装置及具有该散热装置的投影设备。
 背景技术
在激光投影设备中，通过激光激发荧光色轮来产生彩色光序列，其中激光由激光光源产生。随着光源输出光功率的提高，色轮上的热功耗也随之上升。若色轮散热较差，会极大降低荧光粉受激发光的效率，甚至导致色轮本身的损坏。
色轮主要通过高速旋转与空气交换热量，色轮与空气的相对速度越大，则对流换热系数越高，排风部件吸进冷空气并同时排出热空气。
图1、图2为现有技术中的色轮散热装置的结构示意图。其中包括：第一壳体100'、第一风扇300'、第一色轮800'、第一外置风道170'、第一外置换热器500'、第一壳体100'的第一出风口190'、第一进风口180'以及色轮壳体内的第一内置风道160'。
 技术问题
现有色轮散热装置的冷气流由第一进风口180'经过第一内置风道160'进入第一壳体100'内部，冷气流流经第一壳体100'后再从第一出风口190'流出。冷气流一般是先对第一色轮800'表面进行散热，再对第一色轮800'的旋转轴进行散热。由于色轮旋转轴的耐高温能力往往低于色轮表面，当色轮还在其耐温范围之内，色轮旋转轴就已经超出其耐温范围，从而导致第一色轮800'的旋转轴的散热效果下降，降低了第一色轮800'的性能。另外，第一外置换热器500'、第一外置风道170'、第一风扇300'与第一壳体100'为分体设置，占用空间较大，装配工序较多。
 技术解决方案
本发明提出了色轮散热装置及具有该散热装置的投影设备，能够最大限度的提高色轮腔体内的热交换率，提高色轮性能，降低色轮尤其是色轮旋转轴的温度，达到提高产品效率和寿命的目的。
本发明提出了色轮散热装置及具有该散热装置的投影设备，所述色轮散热装置包括壳体、色轮、内置散热器以及风扇，其中，
所述壳体包括相互连通的第一腔体、第二腔体以及第三腔体，所述第一腔体和所述第二腔体沿气流方向依次设置；
所述内置散热器位于所述第一腔体内；
所述风扇位于所述第二腔体内；
所述色轮位于第三腔体内。
如上所述的色轮散热装置，其中，所述第一腔体和所述第二腔体相互并排设置。
如上所述的色轮散热装置，其中，所述第一腔体包括吸气口，所述第一腔体通过所述吸气口与所述第三腔体内部相连通。
如上所述的色轮散热装置，其中，所述第二腔体包括排气口，所述第二腔体通过所述排气口与所述第三腔体内部相连通。
如上所述的色轮散热装置，其中，所述排气口的开口朝向所述色轮的旋转轴。
如上所述的色轮散热装置，其中，进一步包括外置散热器以及导热管，所述外置散热器通过所述导热管与所述内置散热器热连接。
如上所述的色轮散热装置，其中，进一步包括安装板，所述导热管通过所述安装板与所述壳体相互固定连接。
如上所述的色轮散热装置，其中，进一步包括导流板，所述导流板位于所述排气口处，并延伸至所述色轮的旋转轴附近。
如上所述的色轮散热装置，其中，所述气流沿所述第三腔体、第一腔体以及第二腔体依次循环流动。
本发明还提出了投影设备，其中，所述投影设备包括如上所述任一一项的色轮散热装置。
 有益效果
通过采用上述色轮散热装置及具有该散热装置的投影设备，将所述风扇及内置散热器置于同一壳体内，且在壳体中的气流流动方向，该风扇位于散热器的下游，从而可以使风扇在相对较低温度下运行，提升了风扇的使用寿命。
通过采用在排气口处设置导流板结构，将风扇排出的冷气流直接作用于色轮的旋转轴，从而可以最大程度地降低色轮的旋转轴的温度，提高色轮性能，达到提高产品效率和寿命的目的。
通过将色轮、散热器、风扇设置在同一壳体内的不同腔体中，减少了色轮散热装置的结构复杂性，提高了产品的集成性。
通过将内置散热器与外置散热器通过导热管连接，有效的将壳体内的热量传输至壳体外部，有效的实现了壳体内外的热交换，降低了壳体内温度，有效的提高了产品的使用效率及寿命。
 附图说明
下面结合附图详细说明本发明。通过结合以下附图所作的详细描述，本发明的上述或其他方面的内容将变得更清楚和更容易理解。附图中：
图1、图2为现有技术的色轮散热装置的结构示意图；
图3、图4为本发明色轮散热装置及具有该散热装置的投影设备中的色轮散热装置的壳体结构示意图；
图5为本发明色轮散热装置及具有该散热装置的投影设备中的色轮散热装置的结构示意图。
附图中各标号表示如下：
100：壳体、110：第一腔体、120：第二腔体、130：第三腔体、
140：吸气口、150：排气口、160：内置风道、170：外置风道、
180：进风口、190：出风口；
100'：第一壳体、160'：第一内置风道、170'：第一外置风道；
180'：第一进风口、190'：第一出风口；
200：内置散热器；
300：风扇、300'：第一风扇；
400：导流板；
500：外置散热器、500'：第一外置散热器；
600：导热管；
700：安装板；
800：色轮、800：色轮。
 本发明的最佳实施方式
下面结合附图详细说明本发明的具体实施方式。
在此记载的具体实施方式/实施例为本发明的特定的具体实施方式，用于说明本发明的构思，均是解释性和示例性的，不应解释为对本发明实施方式及本发明范围的限制。除在此记载的实施例外，本领域技术人员还能够基于本申请权利要求书和说明书所公开的内容采用显而易见的其它技术方案，这些技术方案包括采用对在此记载的实施例的做出任何显而易见的替换和修改的技术方案，都在本发明的保护范围之内。
图3、图4为本发明色轮散热装置结构示意图。如图3和4所示，色轮散热装置包括壳体100、色轮800、内置散热器200及风扇300。其中，所述壳体100包括相互连通的第一腔体110、第二腔体120以及第三腔体130。所述第一腔体110和所述第二腔体120沿气流方向依次设置。所述内置散热器200位于所述第一腔体110内。所述风扇300位于所述第二腔体120内。所述色轮800位于第三腔体内。
壳体100包括相互连通、气流可内循环的第一腔体110、第二腔体120以及第三腔体130。其中，第一腔体110、第二腔体120分别包括内置散热器200和风扇300，第一腔体110和第二腔体120两腔构成散热腔。第三腔体130内的气流进入第一腔体100内部。该气流经内置散热器200（如半导体制冷器，半导体制冷器是利用半导体材料的珀尔帖效应制成的。所谓珀尔帖效应，是指当直流电流通过两种半导体材料组成的电偶时，其一端吸热，一端放热的现象。）进行热交换后，在第一腔体110内产生形成冷气流。
所述冷气流进一步输送至第二腔体120内部。第二腔体120内部的冷气流经风扇200作用再次输送至第三腔体130内部，对色轮800的旋转轴进行冷却。这里所述的色轮旋转轴包括驱动色轮旋转的马达轴或者是连接色轮及马达的转接轴。第三腔体130作为色轮腔用于容纳色轮800。同时，驱动色轮转动的色轮旋转轴也位于第三腔体130内部。
同时，由于在气流方向上，风扇300位于内置散热器200的下游。相应的，风扇300吸入的气流为冷气流，从而可以使风扇300在相对较低温度下运行，提升了风扇300的使用寿命。
进一步的，所述第一腔体110还包括吸气口140。所述第一腔体110通过所述吸气口140与所述第三腔体130内部相通连接。
第三腔体130内部的热气流经过吸气口140进入到第一腔体110内部，通过内置散热器200进行热交换，并形成温度相对较低的冷气流。
进一步的，所述第二腔体120包括排气口150。所述第二腔体120通过所述排气口150与所述第三腔体130内部相通连接。
第二腔体120内部的冷气流通过所述排气口150进入到第三腔体130内部，并对所述色轮旋转轴进行冷却。
进一步的，所述排气口150的开口位置与所述色轮800的旋转轴相对设置。从排气口150排出的冷空气直接作用于所述色轮800的旋转轴上。这样的结构设计可以最大限度的提高壳体内部的热交换率，降低色轮旋转轴温度，提高色轮性能，从而提高产品的效率和使用寿命。
优选的，所述色轮散热装置还包括导流板400。所述导流板400位于所述排气口150处，并延伸至所述第三腔体130内。
导流板400的设置，可以保证从排气口150排出的冷空气能够直接准确的作用在所述色轮800的旋转轴上。风扇200的输出气流在导流板400的作用下正对着色轮800旋转轴进行排气。从而使冷气流首先对色轮800的旋转轴进行散热，再对色轮800的表面进行散热，因而色轮800的旋转轴获得很好的散热效果，有利于提高产品效率及使用寿命。
同时，导流板400的设置除了能起到引导气流流向的作用之外还可以防止从排气口150排出的被内置散热器200冷却的冷气流直接被吸入吸气口140，而未对色轮800及色轮800旋转轴进行散热。避免了造成不必要的能源浪费。
进一步的，导流板400还可以与所述壳体100做成一体结构。确保该结构能够保证从排气口150排出的冷气流直接准确作用在所述色轮800旋转轴上即可。
在本发明的另一个实施例中，所述色轮散热装置还包括外置散热器500以及导热管600。所述外置散热器500通过所述导热管600与所述内置散热器200相通连接。内置散热器200、外置散热器500和导热管600组合构成热管散热器。
内置散热器200通过导热管600与外置散热器500相通连接。以实现内置散热器200将壳体100中的热量通过所述外置散热器500传导至所述壳体100外部。降低第二腔体120内气流温度，形成温度相对较低的冷气流。所述冷气流用于后续对色轮800旋转轴进行冷却。
本实施例中的色轮散热装置包括两根导热管600。所述导热管600的一端与内置散热器200连接，另一端与外置散热器500连接。
导热管600可以是热管。热管就是利用蒸发制冷，使得热管两端温度差很大，使热量快速传导。热管内部被抽成负压状态，其内部充入适当的液体。这种液体沸点低，容易挥发。管壁有吸液芯，由毛细多孔材料组成。当热管的一端受热时，毛细管中的液体迅速蒸发，蒸汽在微小的压力差下流向另外一端，并且释放出能量，重新冷凝成液体。冷凝后的液体再沿多孔材料靠毛细力的作用返回该端。如此循环往复，将热量由热管一端传至另外一端。
当内置散热器200的温度升高时，导热管600与内置散热器200连接的一端将热量传送至与外置散热器500相连接的一端。热量通过外置散热器500传递给外界。同时，内置散热器200内部温度降低。
进一步的，所述色轮散热装置还包括安装板700。所述导热管600通过所述安装板700与所述壳体100相互固定连接。
所述安装板位于所述壳体100的外部，与壳体固定连接。用于进行壳体内外热量交换的导热管600通过所述安装板700与所述壳体100相互固定连接。
本实施例中色轮散热装置正常工作流程如下：
色轮800正常旋转工作。同时，由于色轮800高速旋转以及吸收光束在第三腔体130内部产生一部分热量。气流中混合着热量形成热气流，所述热气流通过吸气口140进入到第一腔体110内部。
第一腔体110内部的热气流通过内置散热器200，气流中夹杂的热量通过导热管600传输至外置散热器500。外置散热器500将热量传递至外部空间。同时，降低第一腔体110内的温度，形成冷气流。
第二腔体120内部的冷气流经过风扇300的作用，从排气口150排出。排气口150排出的冷气流可以作用在所述色轮800旋转轴上，降低色轮800旋转轴温度，提高了色轮800工作性能。
优选的，可以在排气口150处设置导流板400。导流板400可以保证从排气口150排出的冷空气经过导流板作用进一步准确的作用在所述色轮800旋转轴上。
进入到第三腔体130内部的冷气流首先对色轮800旋转轴进行散热，再对色轮800表面进行散热，从而提高色轮800工作性能。
冷气流在第三腔体130内进行完热交换后再次通过吸气口140进入到第一腔体110内部，通过内置散热器200进行热交换。如此往复循环，不断对色轮800旋转轴进行冷却。
本发明还提出了投影设备，其中，所述投影设备包括上述任一实施例的色轮散热装置。
通过使用本发明所述的投影设备，能够最大限度的提高色轮腔体内的热交换率，提高色轮性能，降低色轮轴的温度，达到提高产品效率和寿命的目的。
最后需要说明的是，上述披露的各技术特征并不限于已披露的内容，本领域技术人员还可根据发明目的进行各技术特征本身的改动或修改各技术特征之间的组合，以实现本发明之目的，但这样的改动后修改都应该属于本发明的范围。

Claims (10)

1、色轮散热装置，包括壳体、色轮、内置散热器以及风扇，其特征在于，
所述壳体包括相互连通的第一腔体、第二腔体以及第三腔体，所述第一腔体和所述第二腔体沿气流方向依次设置；
所述内置散热器位于所述第一腔体内；
所述风扇位于所述第二腔体内；
所述色轮位于第三腔体内。
2、根据权利要求1所述的色轮散热装置，其特征在于，所述第一腔体和所述第二腔体相互并排设置。
3、根据权利要求1所述的色轮散热装置，其特征在于，所述第一腔体包括吸气口，所述第一腔体通过所述吸气口与所述第三腔体内部相连通。
4、根据权利要求1所述的色轮散热装置，其特征在于，所述第二腔体包括排气口，所述第二腔体通过所述排气口与所述第三腔体内部相连通。
5、根据权利要求4所述的色轮散热装置，其特征在于，所述排气口的开口朝向所述色轮的旋转轴。
6、根据权利要求1所述的色轮散热装置，其特征在于，进一步包括外置散热器以及导热管，所述外置散热器通过所述导热管与所述内置散热器热连接。
7、根据权利要求6所述的色轮散热装置，其特征在于，进一步包括安装板，所述导热管通过所述安装板与所述壳体相互固定连接。
8、根据权利要求4所述的色轮散热装置，其特征在于，进一步包括导流板，所述导流板位于所述排气口处，并延伸至所述色轮的旋转轴附近。
9、根据权利要求1所述的色轮散热装置，其特征在于，所述气流沿所述第三腔体、第一腔体以及第二腔体依次循环流动。
10、投影设备，其特征在于，所述投影设备包括权利要求1-9任一一项所述的色轮散热装置。
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