WO2017211133A1 - Module de dissipation thermique étanche aux poussières, et dispositif de projection - Google Patents

Module de dissipation thermique étanche aux poussières, et dispositif de projection Download PDF

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Publication number
WO2017211133A1
WO2017211133A1 PCT/CN2017/081193 CN2017081193W WO2017211133A1 WO 2017211133 A1 WO2017211133 A1 WO 2017211133A1 CN 2017081193 W CN2017081193 W CN 2017081193W WO 2017211133 A1 WO2017211133 A1 WO 2017211133A1
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WO
WIPO (PCT)
Prior art keywords
air
heat
duct
heat exchange
circulation
Prior art date
Application number
PCT/CN2017/081193
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English (en)
Chinese (zh)
Inventor
林伟
谢涛
李屹
Original Assignee
深圳市光峰光电技术有限公司
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Filing date
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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
Publication of WO2017211133A1 publication Critical patent/WO2017211133A1/fr

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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
    • 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

Definitions

  • the utility model relates to a dustproof heat dissipation module and a projection device using the same.
  • the liquid crystal panel Since the light and the heat are interdependent, the liquid crystal panel is also heated by the light while processing the light. If the heat is not extracted in time, the liquid crystal material will age under long-term high temperature operation and the substrate glass is prone to variation in optical properties.
  • the optical engine of the liquid crystal projector usually adopts an open structure layout, and the temperature of the chip is lowered by a fan. However, due to the presence of some suspended particles in the air, the dust adheres to the liquid crystal while dissipating heat. On the board, this not only affects the pass rate of light, but also reduces the heat dissipation efficiency of the chip, which fundamentally affects the heat dissipation effect and the life of the liquid crystal panel.
  • color wheel converts part of the optical loss into thermal energy when wavelength is converted, separated and processed (especially the laser fluorescent color wheel loss can be as high as 30%), and the color wheel as a component for processing color itself has a high Dust-proof requirements, so in general, the color wheel will be installed in the sealed cavity, and the loss of the light source in the color wheel part will be converted into heat accumulation inside the cavity. If this part of heat is not discharged, the internal temperature of the color wheel cavity will be Increasingly high, which affects color wheel conversion efficiency and longevity.
  • the main purpose of the utility model is to provide a dustproof heat dissipation module, which aims to realize effective heat dissipation while the heat generating optical component in the projection device is dustproof.
  • the dustproof heat dissipation module proposed by the utility model is applied to a projection device, which comprises a circulation air passage, a heat exchanger, an air driving device and a plurality of heat generating optical elements, wherein the heat exchanger is connected, sleeved or Partially disposed in the circulation air duct, the circulation air passage is formed with a plurality of sealing cavities, each of the sealing cavities is disposed with at least one of the heat generating optical elements, and the air driving device is disposed in the circulation
  • the air in the air duct is circulated and driven in the air duct, and the heat exchanger radiates heat of the air in the circulation duct to the outside.
  • the heat generating optical element comprises a color wheel and a liquid crystal panel.
  • the circulation duct includes a cold air duct connected to an air outlet of the heat exchanger, a hot air duct connected to an air inlet of the heat exchanger, and a connection connecting the cold air duct and the hot air duct Hot air duct.
  • the air driving device is disposed in the cold air duct of the circulation air duct and is close to the air outlet of the heat exchanger.
  • the heat exchange air passage is provided with one, and the plurality of the sealed chambers are formed in the heat exchange air passage and are arranged in series at intervals in the heat exchange air passage.
  • the heat exchange air passage is provided with at least two, each of the heat exchange air passages is formed with at least one of the sealed chambers, and the at least two heat exchange air passages are arranged in parallel, each of which is disposed
  • the heat exchange air passage connects the cold air duct and the hot air duct.
  • each of the heat exchange air passages and the cold air duct are provided with a regulating valve, and the regulating valve controls a flow rate of air flowing into the heat exchange air passage in the cold air duct.
  • the heat exchange air passage is provided with at least three, each of the heat exchange air passages is formed with at least one of the sealed chambers, and at least three of the heat exchange air passages are disposed in a mixed manner.
  • a portion of the heat exchanger exposed to the circulation duct is provided with a plurality of heat exchange fins.
  • Another object of the present invention is to provide a projection apparatus including a circulation duct, a heat exchanger, an air driving device and a plurality of heat generating optical elements, which are connected, sleeved or partially accommodated.
  • the circulation duct is formed with a plurality of sealed cavities, each of the sealed cavities is provided with at least one of the heat generating optical elements, and the air driving device is disposed in the circulating air channel and driven
  • the air in the circulation duct circulates, and the heat exchanger radiates heat of the air in the circulation duct to the outside.
  • the technical scheme of the present invention forms a sealed cavity in the circulation air passage, and the heat-generating optical component is accommodated in the sealed cavity to meet the dustproof requirement of the heat-generating optical component, and the air circulation device drives the air circulation flow in the circulation air passage, and The heat exchanger cools the air in the circulating air duct, so that the heat generated by the heat generating optical element is dissipated in time to prevent the heat generating optical element in the projection device from being damaged due to the high working environment temperature.
  • FIG. 1 is a schematic structural view of an embodiment of a dustproof heat dissipation module of the present invention
  • FIG. 2 is a schematic structural view of another embodiment of the dustproof heat dissipation module of the present invention.
  • FIG. 3 is a schematic structural view of still another embodiment of the dustproof heat dissipation module of the present invention.
  • the terms "connected”, “fixed” and the like should be understood broadly, unless otherwise clearly defined and limited.
  • “fixed” may be a fixed connection, a detachable connection, or an integral; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • first, second, and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
  • the utility model provides a dustproof heat dissipation module, which is applied to a projection device.
  • the dustproof heat dissipation module of the present invention includes a circulation air duct 10 , a heat exchanger 20 , an air driving device 30 , and a plurality of heat generating optical elements 40 , and the heat exchanger 20 is connected to the circulation air duct 10 .
  • the circulating air duct 10 is formed with a plurality of sealing cavities 14 each of which is disposed with at least one heat generating optical element 40.
  • Each of the heat generating optical elements 40 is received in a sealed cavity 14, and the air driving device 30 is provided.
  • the air in the circulation duct 10 and driving the air in the circulation duct 10 circulates, and the heat exchanger 20 dissipates the heat of the air in the circulation duct 10 to the outside.
  • the projection device usually includes a casing, and the casing is provided with a plurality of components, such as a light source, a liquid crystal panel, a power source, a processor, a color wheel, and the like.
  • a large amount of heat is generated.
  • the color wheel or the liquid crystal panel works for light processing. Due to the mutual conversion of light and heat, a large amount of heat generated by the color wheel and the liquid crystal panel needs to be emitted in time.
  • the circulation duct 10 of the present invention can be formed in the injection molding process of the casing. It can be understood that the circulation duct 10 includes a cavity structure for mounting components (such as a color wheel, a liquid crystal panel, etc.) in the casing, and Some auxiliary pipes that connect the cavity structure.
  • the heat exchanger 20 of the embodiment may adopt any one of a pipeline heat exchanger, a plate fin heat exchanger, and the like, and the air inlet and the air outlet of the heat exchanger 20 respectively communicate with the circulation duct 10, and are in the heat exchanger.
  • the outer surface of 20 is provided with a plurality of heat exchange fins 21, and the heat exchange fins 21 are convected with external cold air to rapidly dissipate the heat of the air in the circulation duct 10 to the outside.
  • the heat exchanger 20 can also be sleeved on the pipeline of the circulation duct 10 or outside the other cavity structure.
  • the circulation duct 10 corresponds to the duct or cavity of the heat exchanger 20 part.
  • the structure is a material with strong thermal conductivity (such as metal or carbon fiber material), and the air in the circulation air passage 10 transfers heat to the heat exchanger 20 through the pipe wall of the pipeline during the flow, and is timely dissipated by the heat exchanger 20 to external.
  • the heat exchanger 20 can also be a semiconductor cooler (TEC), and the TEC portion is housed in the circulation duct 10. It is well known that when a direct current is passed through the TEC galvanic couple, the TEC end absorbs heat. The cold end and the other end are exothermic and the hot end.
  • the cold end When the TEC is applied to the dustproof heat dissipating module, the cold end may be specifically disposed in the circulation duct 10, and the hot end is exposed to the circulation duct 10, During the operation of the dustproof heat dissipation module, the cold end absorbs the heat of the air in the circulation duct 10, and the heat is quickly radiated to the outside through the hot end.
  • the technical solution of the present invention achieves the dustproof requirement of the heat generating optical component 40 by accommodating the heat generating optical component 40 in the sealed cavity 14 of the circulation air duct 10, and is driven by the air driving device 30 disposed in the circulation air duct 10.
  • the air in the circulation duct 10 is circulated, and the air in the circulation duct 10 is cooled by the heat exchanger 20, so that the heat generated by the heat generating optical element 40 is dissipated in time to prevent the heat generating optical element 40 in the projection device from working.
  • the ambient temperature is too high and damaged.
  • the present embodiment provides the heat-generating optical component 40 on the basis of the sealed cavity 14 and can also be in the circulation air channel 10, and Specifically, a filter screen is disposed at the air inlet and the air outlet of the sealing cavity 14 respectively, and the dirt entering the circulation air channel 10 can be absorbed and filtered by the filter screen during the operation or disassembly process of the dustproof heat dissipation module. Ensure that the heat generating optical element 40 is in a preferred working environment.
  • the heat-generating optical element 40 of the present embodiment includes a colored wheel and a liquid crystal panel.
  • the motor for driving the color wheel can be mounted outside the circulation air duct 10, and the rotating shaft of the motor extends into the circulation air duct 10 to be fixed to the color wheel.
  • the liquid crystal panel can be provided with a plurality of blocks, and the heat generating optical component 40 can be a color wheel alone, or a liquid crystal panel, or a combination of a color wheel and a liquid crystal panel, that is, a sealed cavity 14 can be One or more liquid crystal panels or color wheels may be separately provided, or the color wheel and the liquid crystal panel may be disposed in one sealed cavity 14 at the same time.
  • the air drive unit 30 can be a fan or a blower.
  • the black solid arrow indicates the flow direction of the air in the circulation duct 10
  • the white hollow arrow indicates the flow direction of the outside air
  • the air in the circulation duct 10 flows under the driving of the air driving device 30, and the color wheel, the motor shaft and the liquid crystal are used.
  • the heat generated by the plate is carried into the heat exchanger 20 through the air flow, and the heat exchanger 20 convects the heat through the convection of the plurality of heat exchange fins 21 exposed to the circulation air passage 10 to the outside air.
  • the circulation duct 10 is divided into a cold air duct 11 connected to the air outlet of the heat exchanger 20, a hot air duct 12 connected to the air inlet of the heat exchanger 20, and a heat exchange wind connecting the cold air duct 11 and the hot air duct 12.
  • Road 13 The heat generating optical element 40 of the present embodiment is disposed in the sealed cavity 14 of the heat exchange air passage 13, and the air in the circulation air passage 10 is cooled by the heat exchange between the heat exchanger 20 and the outside air, and the air having a lower temperature is
  • the air outlet of the heat exchanger 20 flows into the cold air duct 11 and enters the heat exchange air duct 13 to absorb the heat generated by the heat generating optical element 40.
  • the air in the circulating air duct 10 absorbs the heat generated by the heat generating optical element 40, and then the temperature rises and enters the hot air.
  • the passage 12 passes through the air inlet of the heat exchanger 20 into the heat exchanger 20 to dissipate heat to the outside, so that the heat generating optical element 40 is at a suitable operating temperature.
  • the heat generating optical element 40 performs light and heat conversion in the process of processing light, so that the temperature in the vicinity of the heat generating optical element 40 is high, and in order to make the air driving device 30 in a suitable working environment, the present invention will drive the air driving device 30. It is disposed in the cold air duct 11 of the circulation duct 10 and is close to the air outlet of the heat exchanger 20.
  • the heat dissipation effect of the present invention is such that the heat exchange air passages 13 in the circulation duct 10 are arranged in the following various arrangement manners.
  • the heat exchange air passage 13 is provided with one, and a plurality of sealed cavities 14 are formed on the heat exchange air passage 13 and spaced apart from the heat exchange air passage 13 . Set in series.
  • the series arrangement can be applied to the case where the heat generated by the plurality of heat-generating optical elements 40 is substantially the same.
  • the heat generated by the plurality of heat-generating optical elements 40 may be applied to the series.
  • the method of series connection makes the structure of the dustproof heat dissipation module simple.
  • the heat exchange air passage 13 is provided with at least two, each heat exchange air passage 13 is formed with at least one sealed cavity 14, and at least two heat exchange air passages 13 are arranged in parallel.
  • Each of the heat exchange ducts 13 connects the cold air duct 11 and the hot air duct 12.
  • the heat exchange air passages 13 shown in FIG. 2 are three, and each of the heat exchange air passages 13 forms a sealed cavity 14. This arrangement does not require heat generated by each of the heat-generating optical elements 40, and different heat-generating optics are provided. The heat dissipation process of the component 40 does not interfere with each other, and rapid heat dissipation of the heat generating optical element 40 within each sealed cavity 14 can be achieved by increasing the power of the air drive device 30 and the heat exchanger 20.
  • the present embodiment is provided with a regulating valve 50 at the junction of each of the heat-exchange air ducts 13 and the cold air ducts 11.
  • the regulating valve 50 is used to control the flow of air flowing into the heat exchange duct 13 in the cold air duct 11.
  • the regulator valve 50 can be an electrically controlled valve that is coupled to the processor of the projection device. It can be understood that the embodiment can also be provided with a temperature sensor in the sealed cavity 14. The temperature sensor transmits the temperature information in the vicinity of the heat generating optical element 40 detected in real time to the processor, and the processor can be based on the temperature information and the corresponding heating optics. The power information of the component 40 is comprehensively analyzed and judged, and the regulating valve 50 is controlled to control the flow of the cold air flowing into each of the heat exchange channels 13 in the cold air duct 11, thereby improving the heat dissipation efficiency of the dustproof heat dissipation module.
  • each heat exchange air passage 13 is formed with at least one sealed cavity 14, and at least three of the heat exchange air passages 13 are formed. Mix settings.
  • the heat exchange ducts 13 shown in FIG. 3 are three, two of which are connected in parallel and formed in a mixed manner with the third strip, and each of the heat exchange ducts 13 is provided with a sealed chamber 14.
  • the power of the heat generating optical element 40 in the heat exchange duct 13 disposed in parallel may be selected to be small, and the heat generated in the heat exchange duct 13 connected in series with the heat exchange duct 13 disposed in parallel may be selected.
  • the power of the optical element 40 is large.
  • the cold air flowing into the heat exchange air passage 13 can be utilized to absorb the heat generated by the heat-generating optical element 40, so that the working efficiency of the dust-proof heat-dissipating module is high.
  • the utility model also provides a projection device, which comprises a dustproof heat dissipation module.
  • the dustproof heat dissipation module comprises a circulation air duct 10, a heat exchanger 20, an air driving device 30 and a plurality of heat generating optical elements 40, the heat exchanger 20 is connected, sleeved or partially accommodated in the circulation air duct 10, and the circulation air duct 10 is formed with a plurality of sealed chambers 14, each of which has at least one heat generated.
  • each of the heat generating optical elements 40 is housed in a sealed cavity 14, and the air driving device 30 is disposed in the circulating air channel 10 and drives the air in the circulating air channel 10 to circulate, and the heat exchanger 20 will circulate the air.
  • the heat of the air in the road 10 is radiated to the outside. Since all the technical solutions of all the above embodiments are adopted in the present disclosure, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are not described herein.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

L'invention a trait à un module de dissipation thermique étanche aux poussières, et à un dispositif de projection. Le module de dissipation thermique étanche aux poussières comprend un canal de circulation d'air (10), un échangeur de chaleur (20), un dispositif d'entraînement d'air (30), et une pluralité de composants optiques de dissipation thermique (40). L'échangeur de chaleur (20) communique avec le canal de circulation d'air (10), l'enserre, ou le contient en partie. Une pluralité de chambres étanches (14) sont formées dans ce canal de circulation d'air (10). Chacune des chambres étanches (14) contient au moins un des composants optiques de dissipation thermique (40). Le dispositif d'entraînement d'air (30) se trouve dans le canal de circulation d'air (10) et entraîne l'air dans ce canal de circulation d'air (10) afin qu'il circule. L'échangeur de chaleur (20) dissipe, vers l'environnement extérieur, la chaleur dans l'air présent dans le canal de circulation d'air (10).
PCT/CN2017/081193 2016-06-07 2017-04-20 Module de dissipation thermique étanche aux poussières, et dispositif de projection WO2017211133A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201620547547.8 2016-06-07
CN201620547547.8U CN205844728U (zh) 2016-06-07 2016-06-07 防尘散热模组及投影装置

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WO2017211133A1 true WO2017211133A1 (fr) 2017-12-14

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111258155A (zh) * 2020-03-31 2020-06-09 青岛海信激光显示股份有限公司 一种激光投影设备
CN114318522A (zh) * 2021-12-23 2022-04-12 北京北方华创微电子装备有限公司 半导体腔室的冷却装置及半导体工艺设备

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CN107608168B (zh) * 2017-10-18 2020-10-23 广景视睿科技（深圳）有限公司 一种色轮模组
CN107797367A (zh) * 2017-11-10 2018-03-13 四川长虹电器股份有限公司 用于激光投影机荧光轮的散热结构
CN110119012B (zh) * 2018-02-05 2021-12-07 深圳光峰科技股份有限公司 防热失焦投影装置
CN111121651A (zh) * 2018-10-31 2020-05-08 财团法人工业技术研究院 光学测量稳定性控制系统
CN113448151A (zh) * 2020-03-26 2021-09-28 辽宁工业大学 一种数字媒体智能放映机

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JP2000112033A (ja) * 1998-09-30 2000-04-21 Sanyo Electric Co Ltd 映像投写装置
JP2009186720A (ja) * 2008-02-06 2009-08-20 Panasonic Corp 粉塵除去機能を備えた投写型画像表示装置
CN201589926U (zh) * 2009-06-12 2010-09-22 红蝶科技(深圳)有限公司 一种应用于微型投影的散热结构
CN203365896U (zh) * 2013-07-24 2013-12-25 台达电子工业股份有限公司 应用于激光投影仪的光学组件
CN203883953U (zh) * 2014-04-22 2014-10-15 深圳市绎立锐光科技开发有限公司 色轮防尘散热模组及光源系统
CN204143146U (zh) * 2014-09-11 2015-02-04 广东威创视讯科技股份有限公司 一种拼接墙系统集中式液冷散热装置
CN105467731A (zh) * 2015-12-16 2016-04-06 深圳市帅映科技有限公司 一种激光投影机的热管理系统

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JP2000112033A (ja) * 1998-09-30 2000-04-21 Sanyo Electric Co Ltd 映像投写装置
JP2009186720A (ja) * 2008-02-06 2009-08-20 Panasonic Corp 粉塵除去機能を備えた投写型画像表示装置
CN201589926U (zh) * 2009-06-12 2010-09-22 红蝶科技(深圳)有限公司 一种应用于微型投影的散热结构
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111258155A (zh) * 2020-03-31 2020-06-09 青岛海信激光显示股份有限公司 一种激光投影设备
CN114318522A (zh) * 2021-12-23 2022-04-12 北京北方华创微电子装备有限公司 半导体腔室的冷却装置及半导体工艺设备

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