Liquid cooling projector

Abstract

The invention relates to the field of projectors, and particularly discloses a liquid cooling projector, which comprises a projector body and an outer cylinder, a spiral heat dissipation fin is integrally formed on a shell of the projector body, and an elastic sealing part is formed on the outer side of the heat dissipation fin; one end of the outer cylinder is closed, the other end of the outer cylinder is open, the projector body extends into the outer cylinder from the open end, the elastic sealing portions of the cooling fins abut against the inner wall of the outer cylinder so that a spiral cooling channel can be formed by a shell of the projector body, the inner wall of the outer cylinder and the cooling fins, and a liquid inlet pipe and a liquid outlet pipe are arranged at the positions, corresponding to the two ends of the cooling channel, of the outer cylinder respectively. A projection opening of the projector body is higher than the outer cylinder. The mode has two use modes, a cooling liquid circulation system can be connected through a liquid inlet pipe and a liquid outlet pipe, and a fluorinated liquid can be adopted as a cooling liquid in the cooling liquid circulation system; and the other mode is that the projector body is directly separated from the outer cylinder, the projector body is independently used, and heat dissipation fins on the projector body are used for heat dissipation.

Description

Technical Field

[0001] The present application relates to the field of projectors, and in particular to a liquid-cooled projector. Background Art

[0002] A projector is a device that can project images or videos onto a screen. It has various types and functions to adapt to different usage scenarios. Types of projectors include desktop, portable, floor-standing, reflective, and transmissive projectors. According to the interface type, they can also be divided into VGA interface, HDMI interface, and projectors with network ports. The light sources used by projectors include traditional high-intensity gas discharge light sources (such as ultra-high pressure mercury lamps, short arc xenon lamps, and metal halide lamps) and new solid light sources represented by LED light sources and laser light sources. Traditional light sources have high brightness and good color, but require regular maintenance and replacement of bulbs. LED and laser light sources are widely used in affordable home projectors because of their high brightness, good color, and instant-on characteristics, solving the defects of using traditional light sources.

[0003] In terms of projection technology, projectors have formed three major series since their introduction: 3LCD, DLP and CRT. 3LCD technology uses an optical system to convert strong light into three beams of RGB through a beam splitter, which are then transmitted through the RGB three-color liquid crystal panel to form a color image. DLP technology uses a digital light processor to project a digital micromirror device (DMD) to reflect light and form an image. The development of these technologies has made projectors widely used in many fields such as business offices, teaching, and home entertainment.

[0004] Since the projector generates a lot of heat when working, the existing projectors mainly use air cooling and self-heating. For large projectors, air cooling is mainly used, and there is enough space inside to install fans. But for small projectors (portable projectors), self-heating is mainly used, and heat is quickly conducted through heat dissipation holes and the metal material itself.

[0005] However, the above cooling method is relatively inefficient for the projector, which makes it difficult to improve the performance of the projector without increasing the size of the projector. Summary of the invention

[0006] In order to improve the heat dissipation problem of the projector, the present application provides a liquid-cooled projector.

[0007] A liquid-cooled projector provided in the present application adopts the following technical solution: a liquid-cooled projector, comprising a projector body and an outer tube, wherein a spiral heat dissipation fin is integrally formed on the outer shell of the projector body, and an elastic sealing portion is formed on the outer side of the heat dissipation fin; one end of the outer tube is closed and the other end is open, and the projector body extends from the open end, and the elastic sealing portion of the heat dissipation fin abuts against the inner wall of the outer tube so that the outer shell of the projector body, the inner wall of the outer tube and the heat dissipation fin form a spiral cooling channel, and a liquid inlet pipe and a liquid outlet pipe are respectively provided at both ends of the corresponding cooling channel on the outer tube, and the projection port of the projector body is higher than the outer tube.

[0008] By adopting the above technical solution, the above method has two usage modes. The conventional method is to put the projector body of the liquid-cooled projector into the outer cylinder for use, and can be connected to the coolant circulation system through the liquid inlet pipe and the liquid outlet pipe. The coolant in the coolant circulation system can be a fluorinated liquid; of course, it is also possible not to connect to the coolant circulation system. When the projector body is overheated, the coolant can be directly added from the liquid inlet pipe, and the coolant can be directly discharged after flowing out of the liquid outlet pipe. This method generally chooses cheap and pollution-free coolants such as tap water. Another mode is to directly separate the projector body from the outer cylinder, use the projector body alone, and use the heat dissipation fins on the projector body to dissipate heat. Since the outer edge of the heat dissipation fin is thin, it is easy to cause scratches to personnel. Therefore, the elastic sealing part can be used as a sealing function when connected to the outer cylinder to form a sealed spiral cooling channel. On the other hand, when the projector body is used alone, it can also be used as a protective function, killing two birds with one stone. There are mainly two situations in which the projector body is used alone. One is that the coolant circulation system is damaged and does not work, and the other is that the liquid-cooled projector is used for a short period of time. It does not need liquid cooling and can rely on its own heat dissipation fins to work well.

[0009] Optionally, one end of the projector body extends out of the opening, and a handle is installed on the end of the projector body extending out of the opening.

[0010] By adopting the above technical solution, the setting of the handle facilitates the separation and connection of the projector body and the outer tube; when separating, one hand holds the outer wall of the outer tube, and the other hand takes the handle, and the two hands apply force in opposite directions. When matching, one hand holds the outer wall of the outer tube, and the other hand takes the handle and moves the fingers close to the back of the hand against the end wall of the projector body toward the outer tube.

[0011] Optionally, the liquid inlet pipe and the liquid outlet pipe are both arranged horizontally and are tangentially connected to the spiral cooling channel.

[0012] By adopting the above technical solution, since the cross-section of the spiral cooling channel in the present application is not large, the amount of coolant entering each time is limited. Therefore, it is necessary to improve the heat dissipation effect by accelerating the flow of coolant. The tangential connection between the liquid inlet pipe and the liquid outlet pipe and the spiral cooling channel can reduce the kinetic energy loss of the coolant in the spiral cooling channel and increase the flow rate of the coolant.

[0013] Optionally, a sealing cover is installed on the projector body, and the sealing cover closes the opening when the projector body is installed in the outer tube.

[0014] By adopting the above technical solution, the provision of the sealing cover can reduce the dust from entering the projector body when it is not in use.

[0015] Optionally, the sealing cover is detachably connected to the projector body.

[0016] By adopting the above technical solution, the sealing cover will block the projection port, so it needs to be removed when the projector body is used.

[0017] Optionally, the sealing cover has a cover surface and an annular side wall, the cover surface abuts against the end surface of the projector body extending out of the opening, and a through groove is formed on the cover surface for a handle to pass through.

[0018] By adopting the above technical solution, when the projector body and the outer tube are connected, one hand holds the outer wall of the outer tube, and the other hand takes the handle and makes the part of the fingers close to the back of the hand touch the cover surface and push down, and then push the projector body toward the outer tube through the cover surface, and when separating, just take the sealing cover directly. At this time, there is a through groove on the sealing cover for the handle to pass through, so the sealing cover can be directly moved outward to separate the sealing cover from the projector body.

[0019] Optionally, a guide column is fixed on the sealing cover, a guide portion is fixed on the outer cylinder, and the guide column passes through the guide portion and is magnetically slidably matched with the guide portion.

[0020] By adopting the above technical solution, the magnetic effect of the guide column and the guide part can be used to further limit the sealing opening of the sealing cover. Before the magnetic effect is removed, the sealing mainly relies on the deadweight of the sealing cover, and the sealing effect is poor. Of course, another function is to connect the projector body and the outer cylinder through the guide column and the guide part so that the liquid inlet and outlet pipes are tangentially connected to the spiral cooling channel. The third function is that after the projector body and the outer cylinder are connected, the sealing cover can be moved up synchronously with the guide column to open the opening, so that the projection port of the projector body is not blocked or interfered. At this time, the sealing cover is supported by the magnetic effect of the guide column and the guide part so that the sealing cover does not fall, which can effectively prevent the sealing cover from being lost.

[0021] Optionally, a circulation pump and a radiator are installed between the liquid inlet pipe and the liquid outlet pipe through a pipeline.

[0022] By adopting the above technical solution, this method is suitable for the situation where the liquid-cooled projector is used for a long time to ensure the working temperature of the projector body.

[0023] Optionally, the spiral cooling channel is closed near one end of the opening.

[0024] By adopting the above technical solution, since the coolant can only enter through the liquid inlet pipe, the advantage of this method is that it can reduce the dust entering the spiral cooling channel and prevent the coolant from flowing out.

[0025] Optionally, a one-way diaphragm is provided at one end of the spiral cooling channel close to the opening, and the one-way diaphragm allows the coolant to flow into the spiral cooling channel only from the opening.

[0026] This method can add additional coolant and prevent the coolant from flowing out.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The projector body is quickly cooled by connecting to the coolant circulation system through the spiral cooling channel or directly adding coolant; the coolant can be thermal oil, fluorinated liquid, water, liquid metal, etc., and the dimethyl silicone oil can be dimethyl silicone oil or modified vegetable oil (the main component is higher fatty acid ester compounds);

[0029] 2. A movable sealing cover is provided to switch the projector body to the working state or the closed state;

[0030] 3. By providing the elastic sealing part and the heat dissipation fins, the projector body itself has good heat dissipation in a short time and high safety;

[0031] 4. The liquid inlet pipe and the liquid outlet pipe are tangentially connected to the spiral cooling channel to accelerate the flow rate of the coolant and improve the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0033] Figure 2 yes Figure 1 A top view schematic diagram of

[0034] Figure 3 is along Figure 2 Schematic diagram of the cross-sectional structure along the AA line;

[0035] Figure 4 yes Figure 2 A magnified schematic diagram of part B;

[0036] Figure 5 It is a structural diagram of the hidden sealing cover;

[0037] Figure 6 It is a structural diagram of the hidden outer cylinder;

[0038] Figure 7 Coolant circulation system diagram Figure 1 ;

[0039] Figure 8 Coolant circulation system diagram Figure 2 .

[0040] Figure numerals: 1. projector body; 2. outer cylinder; 3. heat dissipation fins; 4. elastic sealing part; 5. spiral cooling channel; 6. liquid inlet pipe; 7. liquid outlet pipe; 8. projection port; 9. handle; 10. sealing cover; 11. cover surface; 12. annular side wall; 13. through groove; 14. guide part; 15. guide column; 16. closing plate; 17. one-way diaphragm; 18. connecting plate body; 19. circulation hole; 20. reset plate; 21. connecting strip; 22. circulation pump; 23. radiator; 24. microchannel; 25. semiconductor refrigeration ring; 26. wiping piece. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-8 This application is described in further detail.

[0042] The present application embodiment discloses a liquid-cooled projector. Figure 1 The liquid-cooled projector includes a projector body 1 and an outer cylinder 2. A spiral heat sink fin 3 is integrally formed on the outer shell of the projector body 1. In this embodiment, the outer shell of the projector body 1 is cylindrical, and is integrally formed with the heat sink fin 3. The heat sink fin 3 is generally a metal part. Considering the cost factor, an aluminum part is selected in this embodiment. Of course, for better heat conduction effect, a copper part can be selected. An elastic sealing part 4 is formed on the outer side of the heat sink fin 3 (the side away from the projector body 1). The elastic sealing part 4 is made of elastic rubber and is molded on the heat sink fin 3 by injection molding. More specifically, the outer shell of the projector body 1 with the heat sink fin 3 is placed in a mold for injection molding. The elastic sealing part 4 and the heat sink fin 3 can also be connected by post-bonding. Specifically, the elastic sealing part 4 is made into a spiral rubber strip and then adhered to the heat sink fin 3. Of course, in this way, a spiral groove will be opened on the elastic sealing part 4, and the outer side of the heat sink fin 3 is inserted into the spiral groove and then hot-melt-bonded or glue-bonded.

[0043] One end of the outer tube 2 is closed, and the other end is open. The projector body 1 extends from the open end. The elastic sealing portion 4 of the heat dissipation fin 3 abuts against the inner wall of the outer tube 2 so that the outer shell of the projector body 1, the inner wall of the outer tube 2 and the heat dissipation fin 3 form a spiral cooling channel 5. The outer tube 2 is provided with a liquid inlet pipe 6 and a liquid outlet pipe 7 (generally, valves are provided at the liquid inlet pipe 6 and the liquid outlet pipe 7) at both ends of the corresponding cooling channel, wherein the liquid inlet pipe 6 is installed near the open end, and the liquid outlet pipe 7 is installed near the closed end of the outer tube 2. In order to make the coolant flow in and out smoothly, the liquid inlet pipe 6 and the liquid outlet pipe 7 are both arranged horizontally, and the liquid inlet pipe 6 and the liquid outlet pipe 7 are tangentially connected to the spiral cooling channel 5.

[0044] The height of the projector body 1 is higher than the inner cavity height of the outer tube 2, so that when the projector body 1 is located in the outer tube 2, the projection opening 8 of the projector body 1 is higher than the outer tube 2, thereby shielding the projection opening 8. To facilitate the taking of the projector body 1, a handle 9 is installed on the end surface of the projector body 1 extending out of the opening. The handle 9 can be made of a soft rope or the like to reduce the volume.

[0045] In order to minimize dust from entering the projector body 1 when the projector body 1 is not in use, a sealing cover 10 is installed on the projector body 1, and the sealing cover 10 is detachably connected to the projector body 1. Specifically, the sealing cover 10 has a cover surface 11 and an annular side wall 12. The cover surface 11 abuts against the end surface of the projector body 1 extending out of the opening. A through groove 13 is provided on the cover surface 11, and the through groove 13 is a strip groove. The through groove 13 of the projector body 1 is for the handle 9 to pass through. The lower end surface of the annular side wall 12 abuts against the upper end surface of the outer tube 2. The open end of the outer tube 2 is defined as the upper end, and the closed end of the outer tube 2 is defined as the lower end. The other upper and lower ends are defined based on this reference.

[0046] In order to ensure that the liquid inlet pipe 6 and the liquid outlet pipe 7 are tangentially connected to the spiral cooling channel 5, a guide column 15 is fixed on the sealing cover 10, and a guide portion 14 is fixed on the outer cylinder 2, wherein three guide columns 15 are provided, and the guide columns 15 and the projection opening 8 are staggered along the circumferential direction of the outer cylinder 2. The guide portion 14 is two guide plates, and the guide column 15 is limited between the two guide plates.

[0047] The lower end of the spiral cooling channel 5 is open, and the spiral cooling channel 5 is closed near the open end (upper end). The closed type here directly adopts the closing plate 16 directly welded to the upper end of the spiral cooling channel 5 to close, which belongs to the situation that it cannot be opened.

[0048] The implementation principle of a liquid-cooled projector in the embodiment of the present application is as follows: this product has two usage modes. The conventional method is that the projector body 1 of the liquid-cooled projector is placed in the outer tube 2 for use, and can be connected to the cooling liquid circulation system through the liquid inlet pipe 6 and the liquid outlet pipe 7. The cooling liquid in the cooling liquid circulation system can be a fluorinated liquid; of course, it is also possible not to connect to the cooling liquid circulation system. When the projector body 1 is overheated, the cooling liquid can be directly added from the liquid inlet pipe 6, and the cooling liquid can be directly discharged after flowing out of the liquid outlet pipe 7. In this method, cheap and pollution-free cooling liquids such as tap water are generally selected. Another mode is to directly separate the projector body 1 from the outer tube 2, use the projector body 1 alone, and use the heat dissipation fins 3 on the projector body 1 to dissipate heat. Since the outer edge of the heat dissipation fin 3 is thin, it is easy to cause scratches on personnel. Therefore, the elastic sealing part 4 can be used as a sealing function when connected to the outer tube 2 to form a sealed spiral cooling channel 5. On the other hand, when the projector body 1 is used alone, it can also be used as a protective function, killing two birds with one stone. There are mainly two situations in which the projector body 1 is used alone. One is that the coolant circulation system is damaged and does not work. The other is that the liquid-cooled projector is used for a short period of time and does not require liquid cooling and can rely on its own heat dissipation fins 3 to work well.

[0049] When the outer tube 2 is connected to the projector body 1, one hand holds the outer wall of the outer tube 2, and the other hand passes through the handle 9 and cooperates with the thumb to take the handle 9 and make the part of the fingers close to the back of the hand abut against the cover surface 11 and push down, relying on the guide column 15 and the guide part 14 to achieve rapid positioning, and when it moves down to the projector body 1 abutting against the inner bottom surface of the outer tube 2, the guide column 15 is moved upward, and the guide column 15 drives the sealing cover 10 to move up to open the opening. Since the sealing cover 10 only abuts against the projector body 1, it is easy to open. Finally, the height of the sealing cover 10 is maintained by the magnetic attraction force of the guide column 15 and the guide part 14. The guide column 15 is made of magnetic material, the sealing cover 10 is made of PVC material, and the sealing cover 10 is bonded to the guide column 15. Of course, the guide part 14 can also be made of stainless steel or iron.

[0050] A wiping piece 26 can also be installed on the annular side wall 12 of the sealing cover 10. The wiping piece 26 can be made of flexible materials such as cloth and sponge. Its height corresponds to the projection port 8. The sealing cover 10 can be rotated to wipe the projection port 8, and the end face of the wiping piece 26 close to the projection port 8 is an arched arc surface.

[0051] Embodiment 2: The spiral cooling channel 5 is not closed near the opening end, and a one-way diaphragm 17 is provided near the opening end of the spiral cooling channel 5. The one-way diaphragm 17 allows the coolant to flow into the spiral cooling channel 5 only from the opening. The one-way diaphragm 17 specifically includes a connecting plate body 18, a flow hole 19 is provided in the center of the connecting plate body 18, a reset plate 20 is fixed on the inner side of the connecting plate body 18 (close to the side of the spiral cooling channel 5), the size of the reset plate 20 is larger than the size of the through hole, and a connecting strip 21 is formed on the reset plate 20, and the connecting strip 21 is fixed to the connecting plate body 18. The material of the one-way diaphragm 17 is an elastic rubber sheet.

[0052] In this way, the cooling liquid (tap water) can be directly poured into the outer tube 2 and discharged outside.

[0053] Embodiment 3, based on embodiment 1 or embodiment 2, a coolant circulation system is added, and the coolant circulation system includes a circulation pump 22 and a radiator 23, wherein the inlet of the circulation pump 22 is connected to the liquid outlet pipe 7 through a pipe, and the outlet of the circulation pump 22 is connected to the liquid inlet pipe 6 through a pipe, and the radiator 23 is also connected to the pipe. The radiator 23 is a cold row. Since the radiator 23 is an external cold row (with a fan), its power and volume can be made larger, which has a better effect than installing a fan inside the projector.

[0054] A temperature sensor may also be provided on the inner wall of the outer tube 1 , and an electronic display screen is installed on the outer wall of the outer tube 1 . The temperature sensor is connected to the electronic display screen through a processor to display the temperature of the coolant.

[0055] Embodiment 4, based on embodiment 1 or embodiment 2, a cooling liquid circulation system is added, and the cooling liquid circulation system includes a circulation pump 22, a microchannel 24 and a semiconductor refrigeration ring 25, wherein the semiconductor refrigeration ring 25 is fixed on the outer wall of the outer tube 2, and the microchannel 24 is a spiral channel, which is opened in the side wall of the outer tube 2. And the difference from embodiment 1 and embodiment 2 is that the liquid inlet pipe 6 and the liquid outlet pipe 7 of the microchannel 24 are located in the outer tube 2, the liquid inlet pipe 6 is at the upper end of the outer tube 2, and the liquid outlet pipe 7 is at the lower end of the outer tube 2. The semiconductor refrigeration ring 25 can be provided with an interface for power connection separately, or it can share an interface for power connection with the projector body 1. And the inner side wall (cold end) of the semiconductor refrigeration ring 25 is in contact with the outer wall of the outer tube 2. The inner wall of the outer tube 2 is coated with a heat insulation coating, and the heat passes through the microchannel 24 and then passes through the outer wall of the outer tube 2 and is absorbed by the cold end. In this case, the liquid inlet pipe 6 and the liquid outlet pipe 7 may not be tangent to the spiral cooling channel 5.

[0056] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A liquid-cooled projector, characterized in that: The projector body comprises a projector body and an outer tube. A spiral heat dissipation fin is integrally formed on the outer shell of the projector body. An elastic sealing portion is formed on the outer side of the heat dissipation fin. One end of the outer tube is closed and the other end is open. The projector body extends into the outer tube from the open end. The elastic sealing portion of the heat dissipation fin abuts against the inner wall of the outer tube so that the outer shell of the projector body, the inner wall of the outer tube and the heat dissipation fin form a spiral cooling channel. A liquid inlet pipe and a liquid outlet pipe are respectively provided at both ends of the corresponding cooling channel on the outer tube. The projection port of the projector body is higher than the outer tube.

2. A liquid-cooled projector according to claim 1, characterized in that: One end of the projector body extends out of the opening, and a handle is installed on the end of the projector body extending out of the opening.

3. A liquid-cooled projector according to claim 1, characterized in that: The liquid inlet pipe and the liquid outlet pipe are both arranged horizontally and are tangentially connected to the spiral cooling channel.

4. A liquid-cooled projector according to claim 2, characterized in that: A sealing cover is installed on the projector body, and the sealing cover closes the opening when the projector body is installed in the outer cylinder.

5. A liquid-cooled projector according to claim 4, characterized in that: The sealing cover is detachably connected to the projector body.

6. A liquid-cooled projector according to claim 5, characterized in that: The sealing cover comprises a cover surface and an annular side wall, wherein the cover surface abuts against the end surface of the projector body extending out of the opening, and a through groove is formed on the cover surface for a handle to pass through.

7. A liquid-cooled projector according to claim 4, characterized in that: A guide column is fixed on the sealing cover, a guide part is fixed on the outer cylinder, and the guide column passes through the guide part and is magnetically slidably matched with the guide part.

8. The liquid-cooled projector according to claim 4, characterized in that: A circulation pump and a radiator are installed between the liquid inlet pipe and the liquid outlet pipe through a pipeline.

9. The liquid-cooled projector according to claim 1, characterized in that: The spiral cooling channel is closed near one end of the opening.

10. The liquid-cooled projector according to claim 1, characterized in that: A one-way diaphragm is arranged at one end of the spiral cooling channel close to the opening, and the one-way diaphragm allows the coolant to flow into the spiral cooling channel only from the opening.

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