CN110703555A

CN110703555A - Full-sealed fluorescent wheel heat dissipation device

Info

Publication number: CN110703555A
Application number: CN201911013792.5A
Authority: CN
Inventors: 李衡; 方立成; 赖润波
Original assignee: Guangdong Union University Optoelectronics Co Ltd
Current assignee: Guangdong Union University Optoelectronics Co Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-01-17

Abstract

The invention provides a fully-sealed fluorescent wheel heat dissipation device which comprises a mounting box with two open ends and a glass lens arranged in an open hole of the mounting box; the fluorescent wheel is arranged in the mounting box, and the driving motor drives the fluorescent wheel to rotate; the installation box is internally provided with an air cooling cover, the air cooling cover is provided with a first air outlet and a second air outlet corresponding to the fluorescent wheel and the driving motor, the bottom of the installation box is provided with a box body, a fan and a refrigeration box are arranged in the box body, the air cooling cover is communicated with an air outlet of the fan through a first pipeline, the fan is communicated with the refrigeration box through a second pipeline, and the refrigeration box is communicated with the inside of the installation box through a third pipeline; the refrigeration box, the fan, the air cooling cover and the mounting box form a closed circulating refrigeration air duct under the communication of the pipelines; the fluorescent wheel and the driving device can be protected in a closed mode, internal elements are cooled in air, air flow circulating inside is not communicated with the outside, and dust is prevented from being adhered to the fluorescent wheel and the driving device.

Description

Full-sealed fluorescent wheel heat dissipation device

Technical Field

The invention relates to the field of optical elements of projection equipment, in particular to a fully-sealed fluorescent wheel heat dissipation device.

Background

The fluorescent wheel is an important optical element in a projection apparatus, and is used for excitation and emission of light, but since the conversion efficiency of the fluorescent material is usually not higher than 80% and often about 50%, the fluorescent material generates a large amount of heat while emitting light, and further heats the fluorescent material and even the entire fluorescent wheel, and finally reaches a thermal balance. As the intensity and power of the excitation light increases, the temperature at which the fluorescent wheel reaches thermal equilibrium will increase. For example, when the optical power of the excitation light reaches 30W, the temperature of the fluorescent material will be higher than 120 ℃, and the heat of the fluorescent material will be transferred to the substrate and the driving device at the same time, resulting in the temperature increase of the substrate and the driving device.

However, the operating temperature of the drive device has an upper limit value, generally about 85 ℃, and the service life of the drive device is greatly reduced when the upper limit value is exceeded. For example, the fluorescent wheel is in an open 25 ℃ environment, the running temperature of the motor is 41.5 ℃, and the service life of the motor can exceed 20000 hours; and the running temperature of the motor of the fluorescent wheel can exceed 100 ℃ in a closed environment at 25 ℃, so that the service life of the motor can be greatly reduced, and the service life of the whole light source is seriously influenced. Therefore, in order to ensure the service life of the whole light source, the fluorescent wheel in the prior art is operated in an open environment; however, since the operation environment of the fluorescent wheel is open, dust affects the lifespan of the motor and the luminous efficiency of the fluorescent material, thereby reducing the lifespan and the luminous efficiency of the entire light source. Therefore, the dustproof and heat dissipation problems of the fluorescent wheel become a pair of spears which cannot be compatible.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a fully-sealed fluorescent wheel heat dissipation device, which has a novel structure, can be used for sealing and protecting a fluorescent wheel and a driving device, can be used for air-cooling and dissipating heat of internal elements, and prevents dust from adhering to the fluorescent wheel and the driving device because air flow circulating inside is not communicated with the outside.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a fully-sealed fluorescent wheel heat dissipation device which comprises a mounting box with two open ends and a glass lens fixedly arranged in an open hole of the mounting box; the fluorescent wheel is arranged in the mounting box, the driving motor drives the fluorescent wheel to rotate, and light penetrates through the glass lens to be emitted into the mounting box and is excited and reflected by the fluorescent wheel; the fluorescent wheel is arranged in the mounting box, the driving motor is arranged in the fluorescent wheel, the fluorescent wheel is arranged in the fluorescent wheel, the; the refrigeration box, the fan, the air cooling cover and the mounting box form a closed circulating refrigeration air channel under the communication of the pipeline.

In a preferred technical scheme of the present invention, the air cooling hood includes a first hood body and a second hood body that are connected to each other, the first hood body is disposed corresponding to the fluorescent wheel, and the second hood body is disposed corresponding to the driving motor; the outer contour of the first cover body is in a fan shape, a first clamping cavity is formed in the first cover body along the radial direction, the fluorescent wheel is matched with the first clamping cavity in shape, and the fluorescent wheel is arranged in the first clamping cavity; a first air cavity is arranged in the first cover body, the first air cavity is arranged along the edge contour of the first cover body, the first air outlet hole is formed in the arc-shaped surface of the first clamping cavity and communicated with the first air cavity, and a fourth pipeline is communicated with one side of the first air cavity, which is far away from the first clamping cavity; the outer contour of the second cover body is in a fan shape, a second clamping cavity is formed in the second cover body along the radial direction, the driving motor is matched with the second clamping cavity in shape and is arranged in the second clamping cavity, and an output shaft of the driving motor is fixedly connected with the middle part of the fluorescent wheel; the second cover body is internally provided with a second air cavity, the second air cavity is arranged along the edge contour of the second cover body, the second air outlet is formed in the arc-shaped surface of the second clamping cavity and communicated with the second air cavity, one side, far away from the second clamping cavity, of the second air cavity is communicated with a fifth pipeline, and the first pipeline, the fourth pipeline and the fifth pipeline are communicated through a three-way pipe.

In a preferred technical scheme of the invention, a plurality of heat dissipation columns are fixedly arranged on the side surface of the fluorescent wheel close to the driving motor, the heat dissipation columns are uniformly distributed on the side surface of the fluorescent wheel in a circumferential array, and the heat dissipation columns are made of graphene.

In a preferred technical scheme of the invention, the mounting box is of a cylindrical structure, the inner wall of the mounting box is fixedly provided with a baffle ring, the baffle ring is arranged along the inner wall of the mounting box in a ring shape, and the length of the baffle ring along the axial line is smaller than that of the mounting box; the glass lens comprises a mounting ring and a lens body fixedly arranged on the inner wall of the mounting ring, the diameter of the lens body is matched with that of the mounting box, the wall surface of the lens body, far away from the mounting ring, is abutted to the end part of the baffle ring, and the diameter of the mounting ring is matched with that of the mounting box and is fixedly connected with the mounting box through screws.

In a preferred technical scheme of the invention, the refrigeration box comprises a box body and a refrigeration sheet fixedly arranged on the inner wall of the box body, wherein a plurality of heat-conducting sheets are fixedly arranged on the refrigeration surface of the refrigeration sheet, and are uniformly arranged at intervals.

In a preferred technical scheme of the invention, the refrigerator comprises at least two refrigerating sheets, the two refrigerating sheets are respectively arranged on two opposite inner walls of the box body, the heat-conducting sheet is arranged between the two refrigerating sheets, and two ends of the heat-conducting sheet abut against refrigerating surfaces of the two refrigerating sheets.

The invention has the beneficial effects that:

the fully-sealed fluorescent wheel heat dissipation device is novel in structure, the fluorescent wheel and the driving motor can be protected in a sealing mode due to the arrangement of the mounting box, a sealed and independent working environment is provided, and dust is prevented from affecting the normal work of the fluorescent wheel and the driving motor; secondly, the cooperation of the air cooling cover, the fan, the refrigeration box, the first pipeline, the second pipeline and the third pipeline can form a circulating refrigeration air duct inside the mounting box, so that air flow can circularly flow inside, the exchange between the air flow and the outside is avoided, and the entering of dust is further prevented; moreover, the novel structure of air cooling cover covers the outside of establishing at fluorescence wheel and driving motor for the air-out position is more close to fluorescence wheel and driving motor, thereby carries out more effectual heat dissipation, guarantees fluorescence wheel and driving motor steady operation.

Drawings

FIG. 1 is a front view of a fully encapsulated fluorescent wheel heat sink provided in an embodiment of the present invention;

FIG. 2 is a side cross-sectional view of a hermetically sealed phosphor wheel heat sink provided in an embodiment of the present invention;

FIG. 3 is a schematic perspective view of an air-cooled hood according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of an air-cooled hood provided in an embodiment of the present invention.

In the figure:

100. mounting a box; 110. a glass lens; 111. a mounting ring; 112. a lens body; 120. a box body; 130. a baffle ring; 210. a fluorescent wheel; 211. a heat-dissipating column; 220. a drive motor; 300. air cooling cover; 310. a first air outlet; 320. a second air outlet hole; 330. a first cover body; 331. a first card cavity; 332. a first air cavity; 340. a second cover body; 341. a second card cavity; 342. a second air cavity; 350. a fourth conduit; 360. a fifth pipeline; 410. a fan; 420. a refrigeration case; 421. a box body; 422. a refrigeration plate; 423. a heat conductive sheet; 430. a first conduit; 440. a second conduit; 450. a third conduit.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 and fig. 2, a fully-sealed fluorescent wheel heat dissipation device disclosed in the embodiment of the present invention includes a mounting box 100 with two open ends, and a glass lens 110 fixed to the mounting box 100 with an open end; a fluorescent wheel 210 disposed inside the mounting box 100, and a driving motor 220 for driving the fluorescent wheel 210 to rotate, wherein light rays penetrate through the glass lens 110, enter the mounting box 100, and are excited and reflected by the fluorescent wheel 210; the installation box 100 is further internally provided with an air cooling cover 300, the air cooling cover 300 is provided with a first air outlet 310 and a second air outlet 320 corresponding to the fluorescent wheel 210 and the driving motor 220, the bottom of the installation box 100 is provided with a box body 120, a fan 410 and a refrigeration box 420 are arranged inside the box body 120, the air cooling cover 300 is communicated with an air outlet of the fan 410 through a first pipeline 430, an air inlet of the fan 410 is communicated with the refrigeration box 420 through a second pipeline 440, and the refrigeration box 420 is communicated with the inside of the installation box 100 through a third pipeline 450; the refrigeration box 420, the fan 410, the air cooling cover 300 and the mounting box 100 form a closed circulating refrigeration air duct under the communication of pipelines.

The fully-sealed fluorescent wheel heat dissipation device is novel in structure, the installation box 100 can be used for sealing and protecting the fluorescent wheel 210 and the driving motor 220, a sealed and independent working environment is provided, and dust influence on normal work of the fluorescent wheel 210 and the driving motor 220 is reduced; secondly, due to the cooperation of the air cooling cover 300, the fan 410, the refrigeration box 420, the first pipeline 430, the second pipeline 440 and the third pipeline 450, a circulating refrigeration air duct can be formed inside the mounting box 100, so that air flow can circularly flow inside, the exchange between the air flow and the outside is avoided, and the entering of dust is further prevented; furthermore, the air cooling cover 300 has a novel structure, and covers the outer sides of the fluorescent wheel 210 and the driving motor 220, so that the air outlet part is closer to the fluorescent wheel 210 and the driving motor 220, thereby performing more effective heat dissipation and ensuring the stable work of the fluorescent wheel 210 and the driving motor 220.

Further, as shown in fig. 3 and 4, the air-cooled hood 300 includes a first hood 330 and a second hood 340 connected to each other, the first hood 330 is disposed corresponding to the fluorescent wheel 210, and the second hood 340 is disposed corresponding to the driving motor 220;

the outer contour of the first cover 330 is fan-shaped, a first clamping cavity 331 is radially formed in the first cover 330, the fluorescent wheel 210 is matched with the first clamping cavity 331 in shape, and the fluorescent wheel 210 is arranged in the first clamping cavity 331; a first air cavity 332 is formed in the first cover body 330, the first air cavity 332 is arranged along the edge contour of the first cover body 330, the first air outlet 310 is arranged on the arc-shaped surface of the first clamping cavity 331 and is communicated with the first air cavity 332, and a fourth pipeline 350 is communicated with one side of the first air cavity 332, which is far away from the first clamping cavity 331;

the outer contour of the second cover body 340 is fan-shaped, a second clamping cavity 341 is radially formed in the second cover body 340, the shape of the driving motor 220 is matched with that of the second clamping cavity 341, the driving motor 220 is arranged in the second clamping cavity 341, and the output shaft of the driving motor 220 is fixedly connected with the middle part of the fluorescent wheel 210; a second air cavity 342 is arranged in the second cover 340, the second air cavity 342 is arranged along the edge contour of the second cover 340, the second air outlet 320 is arranged on the arc-shaped surface of the second clamping cavity 341 and is communicated with the second air cavity 342, a fifth pipeline 360 is communicated with one side of the second air cavity 342 far away from the second clamping cavity 341, and the first pipeline 430, the fourth pipeline 350 and the fifth pipeline 360 are communicated through a three-way pipe; this structural design can make first cover body 330 better match with fluorescence wheel 210, makes the better and the driving motor 220 of second cover body 340 match to make first exhaust vent 310 more be close to fluorescence wheel 210, make second exhaust vent 320 more be close driving motor 220, provide stronger air current, dispel the heat with higher speed, guarantee the radiating effect.

Further, a plurality of heat dissipation columns 211 are fixedly arranged on the side surface of the fluorescent wheel 210 close to the driving motor 220, the heat dissipation columns 211 are uniformly distributed on the side surface of the fluorescent wheel 210 in a circumferential array, and the heat dissipation columns 211 are made of graphene; the heat dissipation column 211 is arranged to further increase the heat dissipation area of the fluorescent wheel 210, the heat dissipation column 211 is made of graphene to ensure a good heat conduction effect, and the airflow can take away heat quickly through the heat dissipation column 211, so that the heat dissipation effect is improved.

Further, the mounting box 100 is a cylindrical structure, a retaining ring 130 is fixedly arranged on the inner wall of the mounting box 100, the retaining ring 130 is arranged in a ring shape along the inner wall of the mounting box 100, and the length of the retaining ring 130 along the axial line is smaller than that of the mounting box 100; the glass lens 110 comprises a mounting ring 111 and a lens body 112 fixedly arranged on the inner wall of the mounting ring 111, the diameter of the lens body 112 is matched with that of the mounting box 100, the wall surface of the lens body 112 far away from the mounting ring 111 is abutted against the end part of the baffle ring 130, and the diameter of the mounting ring 111 is matched with that of the mounting box 100 and is fixedly connected with the same through screws.

Further, the refrigeration box 420 comprises a box body 421 and a refrigeration sheet 422 fixedly arranged on the inner wall of the box body 421, wherein a plurality of heat-conducting sheets 423 are fixedly arranged on the refrigeration surface of the refrigeration sheet 422, and the plurality of heat-conducting sheets 423 are uniformly arranged at intervals; the refrigerator comprises at least two refrigeration pieces 422, the two refrigeration pieces 422 are respectively arranged on two inner walls of the box body 421, the heat conducting piece 423 is arranged between the two refrigeration pieces 422, and two ends of the heat conducting piece 423 support against refrigeration surfaces of the two refrigeration pieces 422; sufficient refrigeration intensity that dual refrigeration piece 422's structural design can guarantee for conducting strip 423 temperature reduces fast, and the area of contact of polylith conducting strip 423's setting then can increase with the air current, thereby carries out effectual refrigeration heat dissipation to the air current, guarantees holistic radiating effect.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. A totally enclosed fluorescence wheel heat abstractor which characterized in that:

the glass lens fixing device comprises a mounting box (100) with two open ends, and a glass lens (110) fixedly arranged in an open hole of the mounting box (100); the fluorescent wheel (210) is arranged in the mounting box (100), the driving motor (220) drives the fluorescent wheel (210) to rotate, and light penetrates through the glass lens (110) to enter the mounting box (100) and is excited and reflected by the fluorescent wheel (210);

the fluorescent lamp is characterized in that an air cooling cover (300) is further arranged in the mounting box (100), the air cooling cover (300) is provided with a first air outlet hole (310) and a second air outlet hole (320) corresponding to the fluorescent wheel (210) and the driving motor (220), a box body (120) is arranged at the bottom of the mounting box (100), a fan (410) and a refrigeration box (420) are arranged inside the box body (120), the air cooling cover (300) is communicated with an air outlet of the fan (410) through a first pipeline (430), an air inlet of the fan (410) is communicated with the refrigeration box (420) through a second pipeline (440), and the refrigeration box (420) is communicated with the inside of the mounting box (100) through a third pipeline (450); the refrigeration box (420), the fan (410), the air cooling cover (300) and the mounting box (100) form a closed circulating refrigeration air channel under the communication of pipelines.

2. The totally enclosed fluorescent wheel heat sink of claim 1, wherein:

the air cooling cover (300) comprises a first cover body (330) and a second cover body (340) which are connected with each other, the first cover body (330) is arranged corresponding to the fluorescent wheel (210), and the second cover body (340) is arranged corresponding to the driving motor (220);

the outer contour of the first cover body (330) is fan-shaped, a first clamping cavity (331) is formed in the first cover body (330) along the radial direction, the fluorescent wheel (210) is matched with the first clamping cavity (331) in shape, and the fluorescent wheel (210) is arranged in the first clamping cavity (331); a first air cavity (332) is arranged in the first cover body (330), the first air cavity (332) is arranged along the edge contour of the first cover body (330), the first air outlet hole (310) is arranged on the arc-shaped surface of the first clamping cavity (331) and is communicated with the first air cavity (332), and a fourth pipeline (350) is communicated with one side, far away from the first clamping cavity (331), of the first air cavity (332);

the outer contour of the second cover body (340) is fan-shaped, a second clamping cavity (341) is formed in the second cover body (340) along the radial direction, the shape of the driving motor (220) is matched with that of the second clamping cavity (341), the driving motor (220) is arranged in the second clamping cavity (341), and the output shaft of the driving motor (220) is fixedly connected with the middle part of the fluorescent wheel (210); a second air cavity (342) is arranged in the second cover body (340), the second air cavity (342) is arranged along the edge contour of the second cover body (340), the second air outlet (320) is arranged on the arc-shaped surface of the second clamping cavity (341) and is communicated with the second air cavity (342), a fifth pipeline (360) is communicated on one side, far away from the second clamping cavity (341), of the second air cavity (342), and the first pipeline (430), the fourth pipeline (350) and the fifth pipeline (360) are communicated through a three-way pipe.

3. The totally enclosed fluorescent wheel heat sink of claim 1, wherein:

the side face, close to the driving motor (220), of the fluorescent wheel (210) is fixedly provided with a plurality of heat dissipation columns (211), the heat dissipation columns (211) are evenly distributed on the side face of the fluorescent wheel (210) in a circumferential array mode, and the heat dissipation columns (211) are made of graphene.

4. The totally enclosed fluorescent wheel heat sink of claim 1, wherein:

the mounting box (100) is of a cylindrical structure, a baffle ring (130) is fixedly arranged on the inner wall of the mounting box (100), the baffle ring (130) is arranged in a ring shape along the inner wall of the mounting box (100), and the length of the baffle ring (130) along the axial line is smaller than that of the mounting box (100); the glass lens (110) comprises a mounting ring (111) and a lens body (112) fixedly arranged on the inner wall of the mounting ring (111), the diameter of the lens body (112) is matched with that of the mounting box (100), the wall surface of the lens body (112) far away from the mounting ring (111) is abutted against the end part of the blocking ring (130), and the diameter of the mounting ring (111) is matched with that of the mounting box (100) and is fixedly connected with the mounting box through screws.

5. The totally enclosed fluorescent wheel heat sink of claim 1, wherein:

refrigeration case (420) include box body (421) and fixed locate refrigeration piece (422) of box body (421) inner wall, the fixed polylith conducting strip (423) that is equipped with on the refrigeration face of refrigeration piece (422), the polylith conducting strip (423) even interval sets up.

6. The totally enclosed fluorescent wheel heat sink of claim 5, wherein:

the refrigerator is characterized by comprising at least two refrigerating pieces (422), wherein the two refrigerating pieces (422) are respectively arranged on the two inner walls of the box body (421), the heat conducting piece (423) is arranged between the two refrigerating pieces (422), and the two ends of the heat conducting piece (423) are abutted against the refrigerating surfaces of the two refrigerating pieces (422).