A heat-dissipating fluorescent wheel

Abstract

The present invention provides a heat-dissipating fluorescent wheel, which includes a fluorescent wheel structure and a heat-dissipating structure. The fluorescent wheel structure includes a fluorescent wheel body, a cylindrical convex block and a plurality of convex strips arranged in the middle of the back surface of the fluorescent wheel body. The cylindrical convex block and the convex strips are both provided with cavities communicating with each other inside, and a plurality of discharge holes communicating with the inside of the convex strips are arranged on the side walls of each convex strip; a conveying pipe is communicated at the center of the end face of the cylindrical convex block, and a limiting ring is arranged at the edge of the back surface of the fluorescent wheel body; the heat-dissipating structure includes a water pump and a bearing box. One end of the bearing box is open and is adapted to the shape of the limiting ring. The conveying pipe movably penetrates through the bearing box, and the conveying pipe and the fluorescent wheel body are driven by a driving motor; the end of the conveying pipe is connected to a rotary joint, and the other interface of the rotary joint is communicated with the water pump. The water pump is communicated with a water tank, and the water tank is communicated with the bearing box; it can perform water-cooling heat dissipation on the fluorescent wheel, accelerate the diffusion of the heat of the fluorescent wheel, provide suitable working conditions for the fluorescent wheel, and ensure the laser excitation effect.

Description

Technical Field

[0001] The present invention relates to the field of components of projection devices, and more particularly, to a heat-dissipating fluorescent wheel. Background Art

[0002] In recent years, with the rapid development of technologies such as DLP, LCD, and LCOS for display, the projection display market has gradually expanded, no longer limited to the cinema field, but also widely covering industries such as engineering, home use, teaching, and monitoring. People's requirements for the performance of projection systems have also been continuously increasing. Especially for some high-end projection systems using the fourth-generation new laser light sources, when the laser light sources work, they mostly use blue laser to irradiate the fluorescent wheel, and after exciting yellow light, the white light is output by mixing with blue light. The high-power laser irradiates on the surface of the fluorescent wheel, and the high heat generated therefrom will inevitably increase the heat dissipation requirement for the fluorescent wheel. However, because the fluorescent wheel is in a continuously rotating state during operation, it is difficult to dissipate heat from it by using the traditional contact-type heat conduction method. Summary of the Invention

[0003] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to provide a heat-dissipating fluorescent wheel, which has a novel structure, can dissipate heat from the fluorescent wheel by water cooling, accelerate the diffusion of heat of the fluorescent wheel, provide suitable working conditions for the fluorescent wheel, and ensure the laser excitation effect.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] The present invention provides a heat-dissipating fluorescent wheel, which comprises a fluorescent wheel structure and a heat-dissipating structure. The fluorescent wheel structure includes a fluorescent wheel body and a cylindrical convex block fixedly arranged in the middle of the back surface of the fluorescent wheel body. A plurality of convex strips are arranged on the outer wall of the cylindrical convex block. The convex strips extend along the radial direction of the fluorescent wheel body and are fixedly arranged on the fluorescent wheel body. A plurality of the convex strips are arranged in a circumferential array along the axis of the cylindrical convex block. Cavities are arranged inside both the cylindrical convex block and the convex strips, and the inside of each convex strip is communicated with the inside of the cylindrical convex block. A plurality of discharge holes communicated with the inside of the convex strips are arranged on the side wall of each convex strip; A conveying pipe is communicated and arranged at the center of the end face of the cylindrical convex block. A limiting ring is fixedly arranged on the back surface of the fluorescent wheel body. The center of the limiting ring coincides with the center of the fluorescent wheel body and is arranged close to the edge of the fluorescent wheel body; The heat-dissipating structure includes a water pump and a cylindrical bearing box. One end of the bearing box is open and is adapted to the shape of the limiting ring. A through hole is arranged at the center of the back surface of the bearing box. The conveying pipe passes out from the through hole. The limiting ring is adapted to the open mouth of the bearing box. The conveying pipe and the fluorescent wheel body are driven by a driving motor; One end of the conveying pipe far away from the cylindrical convex block is connected with a rotary joint. The other interface of the rotary joint is communicated with the water outlet of the water pump through a first pipeline. The water inlet of the water pump is communicated with the bottom of a water tank through a second pipeline. The top of the water tank is communicated with the bottom of the bearing box through a third pipeline.

[0006] In a preferred technical solution of the present invention, at least two first rotating sealing rings are embedded in the inner wall of the open mouth of the bearing box.

[0007] In a preferred technical solution of the present invention, the diameter of the inner wall of the bottom of the bearing box is larger than the diameter at the open mouth, and the third pipeline is communicated with the bearing box at a position close to the inner wall of the bottom of the bearing box.

[0008] In a preferred technical solution of the present invention, the discharge holes are arranged close to the connection position between the convex strips and the fluorescent wheel body.

[0009] In a preferred technical solution of the present invention, a second rotating sealing ring is arranged at the connection position between the conveying pipe and the through hole.

[0010] In a preferred technical solution of the present invention, the water tank includes a box body and a semiconductor refrigerating sheet arranged on the inner wall of the bottom of the box body. The refrigerating surface of the semiconductor refrigerating sheet is arranged towards the center direction of the box body.

[0011] In a preferred technical solution of the present invention, a first sprocket is fixedly arranged on the conveying pipe, and a second sprocket is fixedly arranged on the output shaft of the driving motor. The second sprocket and the first sprocket are connected by a chain drive.

[0012] In a preferred technical solution of the present invention, both the cylindrical bump and the rib are made of aluminum alloy or copper alloy with good heat conduction performance.

[0013] The beneficial effects of the present invention are as follows:

[0014] A heat-dissipating fluorescent wheel provided by the present invention has a novel structure. The cylindrical bumps and ribs provided on the back of the fluorescent wheel body are internally provided with interconnected cavities, which can be used to fill the coolant, directly dissipate heat from the fluorescent wheel body, and the fluorescent wheel body rotates at a high speed driven by a driving motor, so that the coolant can be discharged from the discharge holes. Then, with the cooperation of the bearing box, the rotary joint and the water tank for refrigeration, a coolant circulation can be realized without affecting the normal operation of the fluorescent wheel body, and the work of supplying water for cooling while rotating can be completed. The overall cooperation can perform water-cooling heat dissipation on the fluorescent wheel, accelerate the diffusion of heat of the fluorescent wheel, provide suitable working conditions for the fluorescent wheel, and ensure the laser excitation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a heat-dissipating fluorescent wheel provided in a specific embodiment of the present invention;

[0016] Figure 2 is a three-dimensional structural diagram of the fluorescent wheel structure provided in a specific embodiment of the present invention;

[0017] Figure 3 is a cross-sectional view of the fluorescent wheel structure provided in a specific embodiment of the present invention;

[0018] Figure 4 is a schematic structural diagram of the cooperation between the fluorescent wheel structure and the bearing box provided in a specific embodiment of the present invention.

[0019] In the figure:

[0020] 100, fluorescent wheel structure; 110, fluorescent wheel body; 120, cylindrical bump; 130, rib; 140, discharge hole; 150, delivery pipe; 151, first sprocket; 160, limiting ring; 200, heat dissipation structure; 210, water pump; 220, bearing box; 230, rotary joint; 241, first pipe; 242, second pipe; 243, third pipe; 250, water tank; 251, box body; 252, semiconductor refrigeration sheet; 260, first rotary seal ring; 270, second rotary seal ring; 300, driving motor; 310, second sprocket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solution of the present invention will be further described below with reference to the drawings and through specific embodiments.

[0022] Such as Figure 1As shown, a heat-dissipating fluorescent wheel is disclosed in a specific embodiment of the present invention, which includes a fluorescent wheel structure 100 and a heat-dissipating structure 200, as Figures 2 to 4 shown, the fluorescent wheel structure 100 includes a fluorescent wheel body 110 and a cylindrical convex block 120 fixedly provided in the middle of the back surface of the fluorescent wheel body 110. A plurality of convex strips 130 are provided on the outer wall of the cylindrical convex block 120. The convex strips 130 extend along the radial direction of the fluorescent wheel body 110 and are fixedly provided on the fluorescent wheel body 110. A plurality of the convex strips 130 are circumferentially arranged in an array along the axis of the cylindrical convex block 120. Cavities are provided inside both the cylindrical convex block 120 and the convex strips 130, and the inside of each convex strip 130 communicates with the inside of the cylindrical convex block 120. A plurality of discharge holes 140 communicating with the inside of the convex strips 130 are provided on the side walls of each convex strip 130; a delivery pipe 150 is communicatively provided at the center of the end face of the cylindrical convex block 120. A limiting ring 160 is fixedly provided on the back surface of the fluorescent wheel body 110. The center of the limiting ring 160 coincides with the center of the fluorescent wheel body 110 and is arranged close to the edge of the fluorescent wheel body 110; the heat-dissipating structure 200 includes a water pump 210 and a cylindrical bearing box 220. One end of the bearing box 220 is open and is adapted to the shape of the limiting ring 160. A through hole is provided at the center of the back surface of the bearing box 220, and the delivery pipe 150 passes through the through hole. The limiting ring 160 is adapted to the open end of the bearing box 220. The delivery pipe 150 and the fluorescent wheel body 110 are driven by a driving motor 300; the end of the delivery pipe 150 away from the cylindrical convex block 120 is connected to a rotary joint 230. The other interface of the rotary joint 230 is communicated with the water outlet of the water pump 210 through a first pipe 241. The water inlet of the water pump 210 is communicated with the bottom of a water tank 250 through a second pipe 242. The top of the water tank 250 is communicated with the bottom of the bearing box 220 through a third pipe 243.

[0023] The above-mentioned heat-dissipating fluorescent wheel has a novel structure. The cylindrical bumps 120 and ribs 130 provided on the back of the fluorescent wheel body 110 are internally provided with interconnected cavities, which can be used to fill the coolant, directly dissipate the heat of the fluorescent wheel body 110, and the fluorescent wheel body 110 rotates at a high speed driven by the driving motor 300, which can cause the coolant to be discharged from the discharge holes 140. Then, with the cooperation of the bearing box 220, the rotary joint 230 and the water tank 250 for refrigeration, a coolant circulation can be realized without affecting the normal operation of the fluorescent wheel body 110, and the work of supplying water for cooling while rotating can be completed. The overall cooperation can perform water-cooled heat dissipation on the fluorescent wheel, accelerate the diffusion of the heat of the fluorescent wheel, provide suitable working conditions for the fluorescent wheel, and ensure the laser excitation effect; more specifically, the bearing box 220 serves as the support for the rotation of the fluorescent wheel body 110, and a relatively sealed space is formed between the fluorescent wheel body 110 and the bearing box 220 and is hermetically sealed by the first rotary seal ring 260. During operation, the driving motor 300 drives the fluorescent wheel body 110 to rotate, and the water pump 210 pumps the refrigerated water in the water tank 250 into the internal cavities of the cylindrical bumps 120 and ribs 130. When the fluorescent wheel body 110 rotates at a high speed, the coolant is thrown out from the discharge holes 140, and then flows back to the water tank 250 through the bearing box 220 and the third pipeline 243, thereby realizing water circulation and quickly dissipating the heat of the fluorescent wheel body 110.

[0024] Further, at least two first rotary seal rings 260 are embedded in the inner wall of the open mouth of the bearing box 220; the double active seal protection can effectively prevent the coolant from leaking out from the connection between the bearing box 220 and the fluorescent wheel body 110.

[0025] Further, the diameter of the inner wall of the bottom of the bearing box 220 is larger than the diameter of the open mouth, and the third pipeline 243 communicates with the bearing box 220 at the inner wall of the bottom of the bearing box 220 close to the bearing box 220; this structural design can appropriately play a drainage effect, so that the coolant thrown out from the discharge holes 140 flows towards the third pipeline 243, and can also play an anti-leakage effect.

[0026] Further, the discharge holes 140 are arranged close to the connection between the ribs 130 and the fluorescent wheel body 110, so that the coolant can better adhere to the fluorescent wheel body 110 and further accelerate heat dissipation.

[0027] Further, a second rotary seal ring 270 is provided at the connection between the delivery pipe 150 and the through hole; this structural design can prevent the coolant from leaking out from the connection between the delivery pipe 150 and the through hole.

[0028] Further, the water tank 250 includes a box body 251 and a semiconductor refrigerating sheet 252 disposed on the inner wall of the bottom of the box body 251, and the refrigerating surface of the semiconductor refrigerating sheet 252 is arranged towards the central direction of the box body 251.

[0029] Further, a first sprocket 151 is fixedly provided on the conveying pipe 150, a second sprocket 310 is fixedly provided on the output shaft of the driving motor 300, and the second sprocket 310 and the first sprocket 151 are connected by chain drive.

[0030] Further, both the cylindrical bump 120 and the rib 130 are made of aluminum alloy or copper alloy with good thermal conductivity.

[0031] The present invention is described by way of preferred embodiments. Those skilled in the art will appreciate that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited by the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of this application belong to the scope of protection of the present invention.

Claims

1. A heat-dissipating fluorescent wheel, characterized in that: It includes a fluorescent wheel structure (100) and a heat-dissipating structure (200). The fluorescent wheel structure (100) includes a fluorescent wheel body (110) and a cylindrical convex block (120) fixedly arranged in the middle of the back of the fluorescent wheel body (110). A plurality of convex strips (130) are arranged on the outer wall of the cylindrical convex block (120). The convex strips (130) extend along the radial direction of the fluorescent wheel body (110) and are fixedly arranged on the fluorescent wheel body (110). A plurality of the convex strips (130) are arranged in a circumferential array along the axis of the cylindrical convex block (120). Cavities are provided inside both the cylindrical convex block (120) and the convex strips (130), and the inside of each convex strip (130) is communicated with the inside of the cylindrical convex block (120). A plurality of discharge holes (140) communicated with the inside of the convex strips (130) are provided on the side walls of each convex strip (130); A delivery pipe (150) is communicated and arranged at the center of the end face of the cylindrical convex block (120). A limiting ring (160) is fixedly arranged on the back of the fluorescent wheel body (110). The center of the limiting ring (160) coincides with the center of the fluorescent wheel body (110) and is arranged close to the edge of the fluorescent wheel body (110); The heat-dissipating structure (200) includes a water pump (210) and a cylindrical bearing box (220). One end of the bearing box (220) is open and is adapted to the shape of the limiting ring (160). A through hole is provided at the center of the back of the bearing box (220). The delivery pipe (150) passes through from the through hole. The limiting ring (160) is adapted to the open end of the bearing box (220). The delivery pipe (150) and the fluorescent wheel body (110) are driven by a driving motor (300); The end of the delivery pipe (150) far from the cylindrical convex block (120) is connected to a rotary joint (230). The other interface of the rotary joint (230) is communicated with the water outlet of the water pump (210) through a first pipe (241). The water inlet of the water pump (210) is communicated with the bottom of a water tank (250) through a second pipe (242). The top of the water tank (250) is communicated with the bottom of the bearing box (220) through a third pipe (243); At least two first rotating sealing rings (260) are embedded on the inner wall of the open end of the bearing box (220); The diameter of the inner wall of the bottom of the bearing box (220) is larger than the diameter of the open end. The third pipe (243) is communicated with the bearing box (220) at the inner wall of the bottom of the bearing box (220) close to the bearing box (220); The discharge holes (140) are arranged close to the connection between the convex strips (130) and the fluorescent wheel body (110).

2. The heat-dissipating fluorescent wheel according to claim 1, characterized in that: A second rotating sealing ring (270) is provided at the connection between the delivery pipe (150) and the through hole.

3. The heat-dissipating fluorescent wheel according to claim 1, characterized in that: The water tank (250) includes a box body (251) and a semiconductor refrigerating sheet (252) disposed on the inner wall of the bottom of the box body (251), and the refrigerating surface of the semiconductor refrigerating sheet (252) is arranged towards the central direction of the box body (251).

4. A heat dissipating fluorescent wheel according to claim 1, characterized in that: A first sprocket (151) is fixedly arranged on the conveying pipe (150), a second sprocket (310) is fixedly arranged on the output shaft of the driving motor (300), and the second sprocket (310) and the first sprocket (151) are connected by chain drive.

5. A heat dissipating fluorescent wheel according to claim 1, characterized in that: Both the cylindrical bump (120) and the rib (130) are made of aluminum alloy or copper alloy with good heat conduction performance.

Images