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WO2018010485A1 - Dispositif de dissipation thermique et équipement de projection - Google Patents

Dispositif de dissipation thermique et équipement de projection Download PDF

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Publication number
WO2018010485A1
WO2018010485A1 PCT/CN2017/084820 CN2017084820W WO2018010485A1 WO 2018010485 A1 WO2018010485 A1 WO 2018010485A1 CN 2017084820 W CN2017084820 W CN 2017084820W WO 2018010485 A1 WO2018010485 A1 WO 2018010485A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
housing
air
accommodating
heat source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/084820
Other languages
English (en)
Chinese (zh)
Inventor
林伟
谢涛
李屹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Appotronics Corp Ltd
Original Assignee
Appotronics Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201620730783.3U external-priority patent/CN205942233U/zh
Application filed by Appotronics Corp Ltd filed Critical Appotronics Corp Ltd
Publication of WO2018010485A1 publication Critical patent/WO2018010485A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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

Definitions

  • the present application relates to the field of optical display technologies, and in particular, to a heat dissipation device and a projection device.
  • the color wheel is an integral part of the separation and processing of color
  • the light source has a certain loss when processed by the color wheel, especially the laser fluorescent color wheel loss can be up to 30 %
  • the color wheel as a component for processing color itself has a high dustproof requirement, so generally the color wheel will be installed in the sealed cavity, and the loss of the light source in the color wheel portion is converted into heat accumulation inside the cavity, if Without expelling this part of the heat, the internal temperature of the color wheel cavity will become higher and higher, which will affect the color wheel conversion efficiency and life.
  • an external air duct is respectively connected to the heat exchange device at the inlet and outlet of the housing for accommodating the heat source, and a driving device for driving the wind channel is installed in the air passage, and the heat receiving device is accommodated by the heat source.
  • the hot air inside the casing is guided to the heat exchanger for cooling, and then guided back to the housing accommodating the heat source for heat dissipation.
  • the heat dissipating device of the prior art is connected to the housing accommodating the heat source through the two external air passages, so that the heat dissipating device needs to occupy more space, which is disadvantageous to miniaturization of the device.
  • the application provides a heat dissipation device and a projection device with compact structure, space saving and good heat dissipation effect.
  • an embodiment provides a heat dissipating device including a housing that houses a heat source, a fan, an external air duct, and a heat exchanger; the housing that houses the heat source has an air outlet and an air inlet, and the air outlet is disposed to receive the heat source a first side of the housing, the air inlet is disposed on a second side of the housing accommodating the heat source adjacent to the first side of the housing accommodating the heat source, and the housing accommodating the heat source has a built-in air duct, one end of the built-in air duct Connected to the air inlet, the other end of the built-in air duct is located diagonally opposite to the air outlet; the heat exchanger has an air outlet and an air inlet, and the two ends of the external air duct are respectively connected with the air outlet of the housing for accommodating the heat source.
  • the air inlet of the heat exchanger is connected, the air outlet of the heat exchanger is connected to the air inlet of the housing that houses the heat source, and the fan is installed on the external air
  • the housing accommodating the heat source includes a first housing and a second housing, and a partition is disposed between the first housing and the second housing, the first housing and the partition form a built-in air duct, and the second shell
  • the body and the partition form a cavity for accommodating the color wheel
  • the air inlet of the casing accommodating the heat source is located at one end of the built-in air duct, and the other end of the inner air passage has a tuyere communicating with the cavity with respect to the other end of the air inlet.
  • the thickness of the first housing is greater than the thickness of the second housing.
  • the external air duct includes a first air duct and a second air duct that are connected together, the first air duct is connected to the housing that houses the heat source, the second air duct is connected to the heat exchanger, and the fan is installed in the second wind.
  • the height of the heat exchanger is higher than the height of the first air duct.
  • the ratio of the height of the heat exchanger to the height of the first air passage is greater than or equal to 1.1.
  • the length of the heat exchanger is equal to the length of the first air duct.
  • the distance between the heat exchanger and the first air passage is greater than 20 mm.
  • the upper portion or the lower portion of the first air passage is curved, or the upper portion or the lower portion of the first air passage has a concave recess.
  • the heat exchanger and the first air passage are lower than the upper surface of the housing that houses the heat source.
  • the heat source is a fluorescent wheel having a phosphor.
  • a projection apparatus comprising the above-mentioned heat dissipating device and a cooling device of a projection device, wherein the cooling device of the projection device is located on a side of the heat dissipating device remote from the heat exchanger, and is used for driving the airflow in the projection device. The flow.
  • the housing accommodating the heat source is provided with a built-in air duct
  • the built-in air duct guides the air inlet to the position of the diagonal of the air outlet, so that the airflow inside the housing accommodating the heat source flows from the diagonal
  • the air flowing in the diagonal form can avoid the short circuit of the inlet and outlet, and the cold air dead angle does not appear inside the cavity, so the heat dissipation effect is good, and the air inlet and the air outlet are arranged on the same side, and the air inlet can be directly connected with the heat exchanger.
  • the air outlets are docked, eliminating an external passage and reducing the external construction volume of the color wheel heat exchange device, which ultimately makes the structure of the entire device compact, saves space, and facilitates miniaturization.
  • FIG. 1 is a schematic structural view of a heat sink device in an embodiment
  • FIG. 2 is a schematic view showing the structure of a housing accommodating a heat source in an embodiment.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a heat dissipating device In the embodiment, a heat dissipating device is provided.
  • the heat dissipating device mainly transfers hot air into the heat exchanger through the heat exchange inside the casing accommodating the heat source, converts the hot air into cold air, and then introduces the cold air into the heat receiving device.
  • this cycle realizes rapid heat dissipation of the color wheel in the housing accommodating the heat source.
  • the heat dissipating device of this embodiment is mounted on the color wheel, that is, the color wheel heat dissipating device.
  • the heat sink can be mounted on other devices having a heat source to dissipate heat from the heat source of the device.
  • the heat sink mainly includes a housing 101 that houses a heat source, a fan 102, an external duct 103, and a heat exchanger 104.
  • the heat source is a fluorescent wheel having a phosphor, that is, the heat source is a color wheel
  • the casing 101 accommodating the heat source is a color wheel outer casing.
  • the first surface (the rightward side in FIG. 2) of the casing 101 accommodating the heat source has an air outlet 101a, and a second surface adjacent to the first surface (the downward facing surface in FIG. 2) It has an air inlet 101b.
  • the housing 101 accommodating a heat source includes a first housing 101c and a second housing 101d, and the first housing 101c is an upper housing of the housing 101 accommodating a heat source, and the second housing 101d is The lower half of the casing 101 accommodating the heat source, and the inside of the casing 101 accommodating the heat source is provided with a partition 106.
  • the first casing 101c and the second casing 101d are separated by a partition 106, the partition 106 and The first casing 101c surrounds the built-in air duct 105, and the partition 106 and the second casing 101d surround the cavity in which the color wheel is accommodated.
  • One end of the built-in air duct 105 is connected to the air inlet 101b, and one end of the partition 103 away from the air inlet 101b is provided with a tuyere, and the built-in air duct 105 communicates with the housing 101 accommodating the heat source through the tuyere, and the built-in air duct 105 can be used from the air inlet.
  • the cold air entering 101b is led to the oblique diagonal tuyere of the air outlet 101a, and then introduced into the cavity of the color wheel from the tuyere, so that the cold air flows diagonally in the housing of the color wheel, which has better heat dissipation effect.
  • the thickness of the first casing 101c is greater than the thickness of the second casing 101d, and the wall thickness of the built-in air duct 105 can be set according to actual needs, and the air passage cross-sectional area of the built-in air duct 105 is constant, thereby ensuring airflow in the built-in air duct 105.
  • the smoothness also minimizes the overall size of the housing accommodating the heat source.
  • the outer surface of the housing 101 accommodating the heat source thus formed is a stepped structure, and a space is reserved outside the second housing 101d for The optical components of the color wheel are installed, which saves space and makes the structure more compact.
  • the heat exchanger 104 has an air inlet and an air outlet, and the air outlet of the heat exchanger 104 communicates with the air inlet 101b of the casing 101 that houses the heat source.
  • the external air duct 103 includes a first air passage 103a and a second air passage 103b.
  • the first air passage 103a and the second air passage 103b are connected in a "7" shape, and the first air passage 103a and the housing 101 accommodating the heat source are out.
  • the tuyere 101a is connected, and the second duct 103b is in communication with the air inlet of the heat exchanger 104.
  • the fan 102 is mounted on the second air duct 103b.
  • the fan 102 includes a driving device and a blade. The output end of the driving device is connected to the blade.
  • the blade of the fan 102 is installed in the second air channel 103b.
  • the fan 102 drives the external air channel 103.
  • the air flows to the heat exchanger 104, that is, drives the hot air in the casing 101 accommodating the heat source into the heat exchanger 104 for heat exchange.
  • the height of the heat exchanger 104 is higher than the height of the first air passage 103a, which is the maximum distance from the bottom surface to the top surface of the heat exchanger 104 or the first air passage 103a, and the height of the heat exchanger 104 is the first wind.
  • the height ratio of the track 103a is greater than or equal to 1.1, that is, the height of the first air passage 103a is smaller than the height of the heat exchanger 104, so that the upper end of the first air passage 103a forms a space for the system wind to dissipate heat from the heat exchanger 104.
  • the upper or lower portion of the first air passage 103a is curved, that is, a chamfer is provided at the corners or a smooth transition of the two surfaces is connected, so that the system wind can pass smoothly.
  • the first air passage 103a has a concave structure and is sunk in the middle to provide a larger ventilation space for the system wind.
  • the curved surface structure or the concave structure of the first air passage 103a enhances the heat dissipation effect of the system wind on the heat exchanger 104.
  • the length of the heat exchanger 104 is equal to or approximately equal to the length of the first air passage 103a. It is well known that the larger the area of the heat exchanger 104, the better the heat dissipation, but as the equipment is miniaturized, the heat exchanger 104 is required to be as small as possible. The heat dissipation performance is as large as possible. For this reason, the length of the heat exchanger 104 is set to be equal to the length of the air passage, and the height of the heat exchanger 104 is greater than the height of the first air passage 103a, so that the heat dissipation effect is also better. Achieved the purpose of compact structure.
  • the distance between the heat exchanger 104 and the first air passage 103a has an important influence on the overall heat dissipation flow path setting of the projection device, and the minimum distance between the heat exchanger 104 and the first air passage 103a is greater than It is equal to 20mm, which can ensure the minimum flow resistance of the heat dissipation channel of the projection device, and can also reduce the miniaturization of the heat sink and the efficiency of heat dissipation.
  • the upper surfaces of the heat exchanger 104 and the first air passage 103a are lower than the upper surface of the casing 101 accommodating the heat source, and the upper surfaces of the heat exchanger 104 and the first air passage 103a are flush with the upper surface of the second air passage 103b.
  • the heat exchanger 104 and the first air passage 103a reserve a space for the heat dissipation air passage of the projection device.
  • the air inlet 105 is disposed on the first surface of the casing accommodating the heat source with the air outlet 101a, and the air inlet 101b is disposed in The second surface adjacent to the housing 101 accommodating the heat source leads the outlet of the built-in air duct 105 to a position at a diagonal of the air outlet 101a, so that the airflow inside the housing 101 accommodating the heat source flows diagonally, diagonally
  • the air flowing in the form of a line can avoid the short circuit of the incoming and outgoing air, and the cold air dead angle does not appear inside the cavity, so the heat dissipation effect is good, and the air inlet 101b and the air outlet 101a are disposed on the same side, and the air inlet 101b can directly communicate with the heat exchanger 104.
  • the air outlet is docked, eliminating an external passage, reducing the external construction volume of the color wheel heat exchange device, and finally making the entire
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the embodiment provides a projection device.
  • the projection device includes the heat dissipation device and the heat dissipation fan of the projection device of the above embodiment.
  • the heat dissipation fan of the projection device is located at a side of the heat dissipation device away from the heat exchanger 104 for driving the airflow in the projection device. flow.
  • the upper or lower portion of the first air passage 103a of the heat dissipating device has a curved surface, or the first air passage 103a has a concave structure and is sunk in the middle, which provides a larger ventilation space for the cooling device of the projection device, and improves the heat dissipation of the cooling device of the projection device.
  • the heat dissipation effect of the crashed heat exchanger 104 is a concave structure and is sunk in the middle, which provides a larger ventilation space for the cooling device of the projection device, and improves the heat dissipation of the cooling device of the projection device.
  • the above-mentioned compact heat dissipating device is disposed in the projection device, which can save space inside the projection device, so that the entire projection device can be miniaturized. Moreover, the fan inside the projection device can dissipate heat from the heat exchanger 104 of the heat sink, and the heat exchanger 104 uses the system wind to dissipate heat, thereby eliminating the need for additional air driving devices, and having the effect of energy saving and mute.

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

Abstract

L'invention a trait à un dispositif de dissipation thermique qui comprend un boîtier (101) contenant une source de chaleur, un ventilateur (102), un conduit d'air externe (103), et un échangeur de chaleur (104). Le boîtier (101) contenant la source de chaleur comporte une sortie d'air (101a) et une entrée d'air (101b). La sortie d'air (101a) est disposée sur une première surface de ce boîtier (101) contenant la source de chaleur. L'entrée d'air (101b) se trouve sur une seconde surface adjacente à une première surface dudit boîtier (101) contenant la source de chaleur. Un conduit d'air interne (105) se situe dans le boîtier (101) contenant la source de chaleur. Une extrémité du conduit d'air interne (105) est reliée à l'entrée d'air (101b), et l'autre extrémité de ce conduit d'air interne (105) se trouve en diagonale à l'opposé de la sortie d'air (101a). L'échangeur de chaleur (104) possède une sortie d'air et une entrée d'air. Les deux extrémités du conduit d'air externe (103) sont respectivement reliées à la sortie d'air (101a) du boîtier (101) contenant la source de chaleur et à l'entrée d'air dudit échangeur de chaleur (104). La sortie d'air de l'échangeur de chaleur (104) est reliée à l'entrée d'air (101b) du boîtier (101) contenant la source de chaleur. Le ventilateur (102) est monté sur le conduit d'air externe (103). Le conduit d'air interne (105) se trouve dans le boîtier (101) contenant la source de chaleur, ce qui permet au conduit d'air interne (105) de diriger l'entrée d'air (101b) vers une position en diagonale par rapport à la sortie d'air (101a), de telle sorte que le boîtier (101) contenant la source de chaleur présente une bonne capacité de dissipation thermique, la structure du dispositif tout entier est compacte, et l'espace est réduit, ce qui facilite la miniaturisation.
PCT/CN2017/084820 2016-07-12 2017-05-18 Dispositif de dissipation thermique et équipement de projection Ceased WO2018010485A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201620730783.3 2016-07-12
CN201620730783.3U CN205942233U (zh) 2016-04-18 2016-07-12 一种散热装置及投影设备

Publications (1)

Publication Number Publication Date
WO2018010485A1 true WO2018010485A1 (fr) 2018-01-18

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PCT/CN2017/084820 Ceased WO2018010485A1 (fr) 2016-07-12 2017-05-18 Dispositif de dissipation thermique et équipement de projection

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113448156A (zh) * 2021-07-06 2021-09-28 深圳亮仔光电科技有限公司 一种回风换热系统和投影机密封光机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1444091A (zh) * 2002-03-13 2003-09-24 精工爱普生株式会社 背投投影机
US20120013854A1 (en) * 2009-03-30 2012-01-19 Yoshifumi Nishimura Projection type display device
CN102455580A (zh) * 2010-10-21 2012-05-16 中强光电股份有限公司 用于投影光学系统的散热模组
US20120327316A1 (en) * 2010-03-11 2012-12-27 Takayuki Okada Projection display device
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
CN104516079A (zh) * 2013-09-26 2015-04-15 中强光电股份有限公司 色轮模组及投影装置
CN205942233U (zh) * 2016-04-18 2017-02-08 深圳市光峰光电技术有限公司 一种散热装置及投影设备

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1444091A (zh) * 2002-03-13 2003-09-24 精工爱普生株式会社 背投投影机
US20120013854A1 (en) * 2009-03-30 2012-01-19 Yoshifumi Nishimura Projection type display device
US20120327316A1 (en) * 2010-03-11 2012-12-27 Takayuki Okada Projection display device
CN102455580A (zh) * 2010-10-21 2012-05-16 中强光电股份有限公司 用于投影光学系统的散热模组
CN104516079A (zh) * 2013-09-26 2015-04-15 中强光电股份有限公司 色轮模组及投影装置
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
CN205942233U (zh) * 2016-04-18 2017-02-08 深圳市光峰光电技术有限公司 一种散热装置及投影设备

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113448156A (zh) * 2021-07-06 2021-09-28 深圳亮仔光电科技有限公司 一种回风换热系统和投影机密封光机
CN113448156B (zh) * 2021-07-06 2023-03-14 深圳亮仔光电科技有限公司 一种回风换热系统和投影机密封光机

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