A computer chassis heat dissipation and cooling device

Abstract

The present invention belongs to the technical field of computers and provides a heat dissipation and cooling device for a computer chassis, which includes a box body. Both sides of the box body are of an open structure and are provided with glass side plates. A cable connection groove is opened on one side of the box body. A net plate and a back plate which are vertically distributed are fixedly installed in the box body to solve the technical problem of the decrease in heat dissipation capacity caused by the blockage of the air inlet holes and the accumulation of dust in the chassis after long-term use. When the present invention is in use, air flows upward to contact components such as the motherboard for heat dissipation and cooling and enters the dust removal cavity. The air in the dust removal cavity flows towards the dust discharge groove side. Through the settings of the first guide plate and the second guide plate, the flow of air is guided, so that the flow direction of the air entering the dust removal cavity upward forms an acute angle with the flow direction of the air in the dust removal cavity, thereby further accelerating the flow rate of the air. The present invention can be widely applied to the heat dissipation scenarios of the equipment in the box body.

Description

Technical Field

[0001] The present invention belongs to the field of computer technology, and particularly relates to a heat dissipation and cooling device for a computer chassis. Background Art

[0002] In this information age, computers have become increasingly integrated into people's lives, bringing a lot of convenience. At the same time, with the progress of society, people's requirements for computer devices are also getting higher and higher. The computer main chassis, as part of computer accessories, is used to place and protect various computer accessories.

[0003] In actual use, a computer sometimes generates a large amount of heat due to heavy computing, and at this time, the computer's heat dissipation device is required to dissipate heat from the motherboard. Most existing computer chassis are provided with air inlet holes and air outlet holes on the chassis, and then the air inside the chassis is circulated with the outside air through the cooling fans. As a result, after long-term use, a large amount of dust will adhere to the position of the air inlet holes, thereby blocking the air inlet holes, reducing the air intake volume and resulting in a decline in heat dissipation capacity. At the same time, when a large amount of dust adheres to the position of the air inlet holes, some dust will enter the chassis under the action of air suction. Since the air flow inside the chassis is gentle, the dust is likely to adhere to devices such as the motherboard, further reducing the heat dissipation capacity. Summary of the Invention

[0004] The purpose of the present invention is to provide a heat dissipation and cooling device for a computer chassis, aiming to solve the technical problem of the decline in heat dissipation capacity caused by the blockage of the air inlet holes and the accumulation of dust inside the chassis after long-term use in the prior art.

[0005] The present invention is implemented as follows. A heat dissipation and cooling device for a computer chassis includes a box body. Both sides of the box body are open structures and are provided with glass side plates. A cable connection groove is opened on one side of the box body. A vertically distributed net plate and a back plate are fixedly installed inside the box body, and a plurality of groups of first fans are fixedly installed on the bottom surface of the net plate at intervals.

[0006] An air intake cavity is arranged at the bottom inside the box body. Filter holes are opened at both ends of the air intake cavity. A through groove communicating with the air intake cavity is opened on the bottom surface of the box body. A top plate is fixedly installed on the top of the box body. A dust removal cavity is formed between the top plate and the top wall of the box body. A plurality of groups of dust removal grooves are opened on the top plate at intervals. A dust discharge groove communicating with the dust removal cavity is opened on the side surface of the box body. A baffle is arranged in the dust discharge groove. A plurality of groups of second fans are fixedly installed on the side of the dust removal cavity far from the dust discharge groove.

[0007] Further technical solution: A plurality of groups of first guide plates and second guide plates respectively aligned with the sides of the dust removal grooves are fixedly installed on the top plate. The first guide plates and the second guide plates are located on both sides of the top plate. The second guide plates are located inside the dust removal cavity, and the projection of the second guide plates on the top plate covers the adjacent dust removal grooves.

[0008] Further technical solution: An installation groove is provided in the dust discharge groove. The baffle is slidably installed in the installation groove and closes the dust discharge groove when it contacts the lower surface of the dust discharge groove. An electromagnet is fixedly installed in the installation groove. When the electromagnet is energized, it adsorbs the baffle, and a magnetic structure for the electromagnet to adsorb is arranged on the upper surface of the baffle.

[0009] Further technical solution: A communication chamber is fixedly installed on the inner bottom surface of the box body. A plurality of air blowing pipes that penetrate upward through the mesh plate are communicated with the communication chamber. There is a gap between the air blowing pipes and the back plate. The communication chamber is communicated with a sealing chamber fixedly installed on the inner bottom surface of the box body.

[0010] Further technical solution: A first piston plate is slidably installed in the sealing chamber. The first piston plate divides the sealing chamber into a first cavity and a second cavity. A first reciprocating lead screw that drives the first piston plate to move reciprocally is rotatably installed in the sealing chamber. A rotary power member that drives the first reciprocating lead screw to rotate is fixedly installed on the inner bottom surface of the box body. The first cavity is respectively communicated with the air inlet cavity and the communication chamber through pipelines, and one-way valves are arranged on the pipelines.

[0011] Further technical solution: The second cavity is communicated with a second connecting pipe and a third connecting pipe. The ends of the second connecting pipe and the third connecting pipe far away from the second cavity both extend into the dust removal cavity. The end of the second connecting pipe is located at one end of the dust removal cavity far away from the dust discharge groove, and the end of the third connecting pipe is located at one end of the dust removal cavity close to the dust discharge groove and the end of the third connecting pipe points to the dust discharge groove. One-way valves are arranged on both the second connecting pipe and the third connecting pipe.

[0012] Further technical solution: Second reciprocating lead screws are rotatably installed at both ends of the air inlet cavity. The second reciprocating lead screws drive the moving plate to move reciprocally. Nozzles are fixedly installed on the moving plate, and the nozzles face the direction where the filter holes are located. When the first piston plate moves, it drives the second reciprocating lead screws to rotate and conveys air to the nozzles.

[0013] Further technical solution: Air collecting cylinders are fixedly installed on both side walls of the box body. A second piston plate is slidably installed in the air collecting cylinder. A sliding rod is fixedly installed on the second piston plate. The sliding rod extends into the sealing chamber and is slidably connected with the side wall of the sealing chamber. A magnet is fixedly installed at one end of the sliding rod located in the sealing chamber, and a magnetic structure for the magnet to adsorb is arranged in the corresponding area on the first piston plate. A first connecting pipe is communicated with the air collecting cylinder, and the first connecting pipe is communicated with the nozzle.

[0014] Further technical solution: A sliding plate is fixedly installed on the magnet. The sliding plate penetrates through the side wall of the sealing chamber parallel to the sliding rod. A rack is fixedly installed at the end of the sliding plate. The rack drives a second rotating shaft rotatably installed on the bottom surface of the box body to rotate through a ratchet. The second rotating shaft is rotationally connected with a first rotating shaft. The first rotating shaft extends into the air inlet cavity and is rotationally connected with the second reciprocating lead screw through a gear set.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The air flows upward and contacts components such as the main board for heat dissipation and cooling, and then enters the dust removal cavity. The second fan will push the air in the dust removal cavity to flow towards the dust discharge groove side, so that the air entering the dust removal cavity upward can leave the box body through the dust discharge groove, thus realizing the circulating flow of the air in the box body and the outside world. Through the settings of the first guide plate and the second guide plate, the flow of the air is guided, so that the flow direction of the air entering the dust removal cavity upward forms an acute angle with the flow direction of the air in the dust removal cavity, which can further accelerate the air flow speed, improve the heat dissipation effect of the box body. At the same time, the second guide plate can block the dust removal groove below, so that the air in the dust removal cavity will not flow downward when moving towards the dust discharge groove, avoiding the collision of the air flowing in two directions and reducing the air flow speed, and at the same time avoiding the dust carried by the air entering the dust removal cavity from falling back into the box body again, ensuring the cleanliness of the box body and the heat dissipation effect of the box body.

[0017] 2. When the first piston plate moves to compress the first cavity, the cold air in the first cavity at this time enters the communication chamber through the pipeline, and then is blown upward through the air blowing pipe, so as to dissipate heat and cool the upper main board. At the same time, due to the setting of the one-way valve, the movement of the first piston plate compresses the space of the first cavity, so that the gas in the first cavity is discharged under the action of pressure, so that the air blown out by the air blowing pipe has a higher speed. At the same time, the dust attached to the surface of the main board can be blown off by the high-speed flowing air, realizing the cleaning of the main board, avoiding the accumulation of dust on the main board, further improving the cooling effect on the main board. At the same time, the space of the second cavity increases, and then the air in the dust removal cavity is sucked into the second cavity through the second connecting pipe, so as to increase the upward flow speed of the air in the box body, further improve the air flow speed in the box body, improve the cooling effect, and at the same time make the dust carried by the air be better extracted into the dust removal cavity, which is beneficial to subsequent dust removal.

[0018] 3. When the first piston plate approaches the end of the sealing chamber, it will contact and adsorb with the magnet and be fixed. At this time, the first piston plate will push the slide rod and the slide plate to move synchronously. The slide rod drives the second piston plate to move in the air collecting cylinder, so that the gas in the air collecting cylinder enters the nozzle through the first connecting pipe, and then is sprayed towards the filter holes through the nozzle. The air passes through the filter holes and flows to the outside to realize the backwashing of the filter holes, reducing the dust adhesion outside the filter holes, and then avoiding the blockage of the filter holes and reducing the probability of the attached dust entering the box body, ensuring the air intake volume, reducing the dust content, and further ensuring the heat dissipation effect in the chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2This is a schematic structural diagram of the wire mesh plate in the present invention.

[0021] Figure 3 This is a schematic structural diagram of the back plate in the present invention.

[0022] Figure 4 This is a schematic structural diagram of the first perspective of the sealing chamber in the present invention.

[0023] Figure 5 This is a schematic structural diagram of the second perspective of the sealing chamber in the present invention.

[0024] Figure 6 This is a schematic cross-sectional structural diagram of the air collecting cylinder in the present invention.

[0025] Figure 7 This is the front view of the present invention.

[0026] Figure 8 It is Figure 7 an enlarged schematic diagram of area A1 in

[0027] Figure 9 This is a schematic cross-sectional structural diagram of the dust removal chamber in the present invention.

[0028] Figure 10 This is the front view of the dust discharge groove in the present invention.

[0029] In the drawings: 1. Box body; 2. Glass side plate; 3. Cable connection groove; 4. Air inlet chamber; 5. Filter hole; 6. Through groove; 7. Sealing chamber; 8. First piston plate; 9. First reciprocating lead screw; 10. Rotary power member; 11. Slide rod; 12. Air collecting cylinder; 13. Slide plate; 14. Second piston plate; 15. First connecting pipe; 16. Nozzle; 17. Moving plate; 18. Second reciprocating lead screw; 19. Gear set; 20. First rotating shaft; 21. Second rotating shaft; 22. Ratchet; 23. Rack; 24. Magnet; 25. Back plate; 26. Wire mesh plate; 27. First cavity; 28. Second cavity; 29. Second connecting pipe; 30. Third connecting pipe; 31. Communication chamber; 32. Blowing air pipe; 33. First fan; 34. Top plate; 35. Dust removal chamber; 36. Second fan; 37. Dust discharge groove; 38. First guide plate; 39. Dust removal groove; 40. Second guide plate; 41. Installation groove; 42. Baffle; 43. Electromagnet. Detailed implementation manners

[0030] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0032] As shown Figures 1-10 in the figure, a computer case heat dissipation and cooling device provided by the present invention includes a box body 1. Both sides of the box body 1 are open structures and are provided with glass side plates 2. A cable connection groove 3 is opened on one side of the box body 1. A vertically distributed net plate 26 and a back plate 25 are fixedly installed inside the box body 1. Multiple groups of first fans 33 are fixedly installed on the bottom surface of the net plate 26 at intervals;

[0033] An air intake cavity 4 is arranged at the bottom inside the box body 1. Filter holes 5 are opened at both ends of the air intake cavity 4. A through groove 6 communicating with the air intake cavity 4 is opened on the bottom surface of the box body 1. A top plate 34 is fixedly installed on the top of the box body 1. A dust removal cavity 35 is formed between the top plate 34 and the top wall of the box body 1. Multiple groups of dust removal grooves 39 are opened on the top plate 34 at intervals. Multiple groups of first guide plates 38 and second guide plates 40 are fixedly installed on the top plate 34 and are aligned with the sides of the dust removal grooves 39 respectively. The first guide plate 38 and the second guide plate 40 are located on both sides of the top plate 34. The second guide plate 40 is located inside the dust removal cavity 35. The projection of the second guide plate 40 on the top plate 34 covers its adjacent dust removal groove 39. A dust discharge groove 37 communicating with the dust removal cavity 35 is opened on the side surface of the box body 1. A baffle 42 is arranged in the dust discharge groove 37. An installation groove 41 is opened in the dust discharge groove 37. The baffle 42 is slidably installed in the installation groove 41 and closes the dust discharge groove 37 when the baffle 42 contacts the lower surface of the dust discharge groove 37. An electromagnet 43 is fixedly installed in the installation groove 41. The electromagnet 43 adsorbs the baffle 42 when energized. A magnetic structure for the electromagnet 43 to adsorb is arranged on the upper surface of the baffle 42. Multiple groups of second fans 36 are fixedly installed on the side of the dust removal cavity 35 far from the dust discharge groove 37.

[0034] In actual application of this embodiment, the main board is fixedly installed on the backplane 25. After installation, the connection positions on the main board and the graphics card will fill the position of the cable connection groove 3, thereby closing the box body 1. After the main board is powered on, the first fan 33 and the second fan 36 are turned on synchronously. At the same time, the electromagnet 43 is powered on and adsorbs the baffle 42 to move upward, thereby opening the dust exhaust groove 37. The outside air enters the intake cavity 4 after being filtered through the filter holes 5. The air in the intake cavity 4 moves upward through the through groove 6. At this time, the first fan 33 pushes the air to flow upward. The air flows upward and contacts components such as the main board for heat dissipation and temperature reduction. The air carrying heat flows upward and enters the dust removal cavity 35 through the dust removal groove 39. The second fan 36 will push the air in the dust removal cavity 35 to flow toward the dust exhaust groove 37 side, so that the air entering the dust removal cavity 35 upward can leave the box body 1 through the dust exhaust groove 37, thereby realizing the circulating flow of the air in the box body 1 and the outside. Through the settings of the first guide plate 38 and the second guide plate 40, the flow of the air is guided, so that the flow direction of the air entering the dust removal cavity 35 upward forms an acute angle with the flow direction of the air in the dust removal cavity 35, which can further accelerate the air flow speed and improve the heat dissipation effect of the box body 1. At the same time, the second guide plate 40 can block the dust removal groove 39 below, so that the air in the dust removal cavity 35 will not flow downward when moving toward the dust exhaust groove 37, avoiding the collision of the air flowing in two directions and reducing the air flow speed. At the same time, it avoids the dust carried by the air entering the dust removal cavity 35 from falling back into the box body 1 again, ensuring the cleanliness of the box body 1 and the heat dissipation effect of the box body 1. After the main board is powered off, at this time the electromagnet 43 is powered off, and the baffle 42 falls under the action of gravity to close the dust exhaust groove 37, reducing the probability of dust entering the box body 1.

[0035] As Figures 4-8 shown, a computer chassis heat dissipation and cooling device provided by the present invention. A communication chamber 31 is fixedly installed on the inner bottom surface of the box body 1. A plurality of air blowing pipes 32 communicating upward through the net plate 26 are communicated with the communication chamber 31. There is a gap between the air blowing pipes 32 and the backplane 25. The communication chamber 31 is communicated with a sealing chamber 7 fixedly installed on the inner bottom surface of the box body 1.

[0036] Specifically, a first piston plate 8 is slidably installed in the sealing chamber 7. The first piston plate 8 divides the inside of the sealing chamber 7 into a first cavity 27 and a second cavity 28. A first reciprocating lead screw 9 for driving the first piston plate 8 to move reciprocally is rotatably installed in the sealing chamber 7. A rotating power member 10 for driving the first reciprocating lead screw 9 to rotate is fixedly installed on the inner bottom surface of the box body 1. The first cavity 27 is respectively communicated with the intake cavity 4 and the communication chamber 31 through pipelines, and one-way valves are arranged on the pipelines. The gear set 19 is a bevel gear set. There are two groups of bevel gear sets. The two bevel gears are respectively fixedly installed on the first rotating shaft 20 and the second reciprocating lead screw 18.

[0037] Specifically, the second cavity 28 is connected with a second connecting pipe 29 and a third connecting pipe 30. The ends of the second connecting pipe 29 and the third connecting pipe 30, which are far away from the second cavity 28, both extend into the dust removal cavity 35. The end of the second connecting pipe 29 is located at one end of the dust removal cavity 35 far away from the dust discharge groove 37, and the end of the third connecting pipe 30 is located at one end of the dust removal cavity 35 close to the dust discharge groove 37 and the end of the third connecting pipe 30 points to the dust discharge groove 37. Check valves are arranged on both the second connecting pipe 29 and the third connecting pipe 30.

[0038] In actual application of this embodiment, the rotary power member 10 drives the first reciprocating lead screw 9 to rotate, and then the first piston plate 8 reciprocates in the sealing chamber 7. When the first piston plate 8 moves to compress the first cavity 27, the cold air in the first cavity 27 at this time enters the communication chamber 31 through the pipeline, and then is blown upward through the air blowing pipe 32, so as to dissipate heat and cool the main board above. At the same time, due to the setting of the check valve, the space of the first cavity 27 is compressed when the first piston plate 8 moves, so that the gas in the first cavity 27 is discharged under the action of pressure, so that the air blown out by the air blowing pipe 32 has a higher speed. At the same time, the dust attached to the surface of the main board can be blown off by the high-speed flowing air, realizing the cleaning of the main board, avoiding the accumulation of dust on the main board, and further improving the cooling effect on the main board. At this time, the space of the second cavity 28 increases, and then the air in the dust removal cavity 35 is sucked into the second cavity 28 through the second connecting pipe 29, so as to increase the upward flow speed of the air in the box body 1, further improve the flow speed of the air in the box body 1, improve the cooling effect, and at the same time enable the dust carried in the air to be better extracted into the dust removal cavity 35, which is beneficial to subsequent dust removal. A filter screen is arranged at the air inlet of the second connecting pipe 29 to reduce the dust entering the second cavity 28;

[0039] When the first piston plate 8 moves in the reverse direction, the filtered air in the intake cavity 4 enters the first cavity 27 through the pipeline at this time, and the air in the second cavity 28 is ejected through the third connecting pipe 30 under the action of pressure. Since the end of the third connecting pipe 30 points to the dust discharge groove 37, the air flow in the box body 1 to the outside can be further accelerated, improving the cooling effect and the dust removal effect.

[0040] In an example of the present invention, the rotary power member 10 is a motor. Of course, it can also be other components such as a hydraulic motor that can output rotary power, and the first reciprocating lead screw 9 is driven to rotate by the motor.

[0041] As Figures 4-8 shown, a computer chassis heat dissipation and cooling device provided by the present invention is provided. Second reciprocating lead screws 18 are rotatably installed at both ends of the intake cavity 4. The second reciprocating lead screws 18 drive the moving plate 17 to reciprocate. A nozzle 16 is fixedly installed on the moving plate 17, and the nozzle 16 faces the direction where the filter holes 5 are located. When the first piston plate 8 moves, it drives the second reciprocating lead screw 18 to rotate and conveys air to the nozzle 16.

[0042] Specifically, air collecting cylinders 12 are fixedly installed on both side walls inside the box body 1. A second piston plate 14 is slidably installed inside the air collecting cylinder 12. A sliding rod 11 is fixedly installed on the second piston plate 14. The sliding rod 11 extends into the sealing chamber 7 and is slidably connected to the side wall of the sealing chamber 7. A magnet 24 is fixedly installed at one end of the sliding rod 11 located inside the sealing chamber 7, and a magnetic structure for the magnet 24 to adsorb is arranged in the corresponding area on the first piston plate 8. A first connecting pipe 15 is communicated with the air collecting cylinder 12, and the first connecting pipe 15 is communicated with the nozzle 16.

[0043] Specifically, a sliding plate 13 is fixedly installed on the magnet 24. The sliding plate 13 penetrates through the side wall of the sealing chamber 7 parallel to the sliding rod 11. A rack 23 is fixedly installed at the end of the sliding plate 13. The rack 23 drives a second rotating shaft 21 rotatably installed on the bottom surface of the box body 1 to rotate through a ratchet wheel 22. The second rotating shaft 21 is rotatably connected to a first rotating shaft 20. The first rotating shaft 20 extends into the air inlet chamber 4 and is rotatably connected to a second reciprocating lead screw 18 through a gear set 19.

[0044] In actual application of this embodiment, when the first piston plate 8 approaches the end of the sealing chamber 7, it will contact and adsorb the magnet 24. At this time, the first piston plate 8 will push the sliding rod 11 and the sliding plate 13 to move synchronously. The sliding rod 11 drives the second piston plate 14 to move inside the air collecting cylinder 12, so that the gas in the air collecting cylinder 12 enters the nozzle 16 through the first connecting pipe 15, and then is sprayed to the filter holes 5 through the nozzle 16. The air passes through the filter holes 5 and flows to the outside to realize the backwashing of the filter holes 5, reduce the dust adhesion outside the filter holes 5, and further avoid the blockage of the filter holes 5 and reduce the probability of the attached dust entering the box body 1, ensure the air intake volume, reduce the dust content, further ensure the heat dissipation effect inside the box body 1. At the same time, the sliding plate 13 drives the rack 23 to move. The rack 23 drives the second rotating shaft 21 to rotate through the ratchet wheel 22. The second rotating shaft 21 drives the first rotating shaft 20 to rotate synchronously through a belt. The first rotating shaft 20 drives the second reciprocating lead screw 18 to rotate through the gear set 19, and further makes the moving plate 17 drive the nozzle 16 to move horizontally, so that the nozzle 16 can clean the filter holes 5 at different positions;

[0045] When the first piston plate 8 moves in the reverse direction, the first piston plate 8 drives the sliding rod 11 and the sliding plate 13 to move synchronously through the magnet 24. At this time, the second piston plate 14 resets and extracts the air in the air inlet chamber 4 into the air collecting cylinder 12 for subsequent cleaning again. When the rack 23 resets, the ratchet wheel 22 idles, so that the first rotating shaft 20 and the second rotating shaft 21 remain stationary. When the first piston plate 8 moves towards the end of the sealing chamber 7 again, the nozzle 16 will move again at this time, so as to realize the synchronization of the nozzle 16 jetting air and moving, and ensure that the outside of the filter holes 5 can be comprehensively cleaned.

[0046] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

[0047] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A computer chassis heat dissipation and cooling device, comprising a box body (1). Both sides of the box body (1) are of an open structure and are provided with glass side plates (2). A cable connection groove (3) is opened on one side of the box body (1), and it is characterized in that, A net plate (26) and a back plate (25) which are vertically distributed are fixedly installed in the box body (1), and a plurality of groups of first fans (33) which are spaced apart are fixedly installed on the bottom surface of the net plate (26); An air inlet cavity (4) is arranged at the bottom inside the box body (1), filter holes (5) are formed at both ends of the air inlet cavity (4), a through groove (6) communicated with the air inlet cavity (4) is formed in the bottom surface of the box body (1), a top plate (34) is fixedly installed at the top of the box body (1), a dust removal cavity (35) is formed between the top plate (34) and the top wall of the box body (1), a plurality of groups of dust removal grooves (39) which are spaced apart are formed in the top plate (34), a dust discharge groove (37) communicated with the dust removal cavity (35) is formed in the side surface of the box body (1), a baffle (42) is arranged in the dust discharge groove (37), and a plurality of groups of second fans (36) are fixedly installed on one side of the dust removal cavity (35) far away from the dust discharge groove (37); A plurality of first guide plates (38) and second guide plates (40) which are respectively aligned with the side edges of the dust removal grooves (39) are fixedly installed on the top plate (34), the first guide plates (38) and the second guide plates (40) are located on both sides of the top plate (34), the second guide plates (40) are located in the dust removal cavity (35), and the projection of the second guide plates (40) on the top plate (34) covers the adjacent dust removal grooves (39).

2. The computer chassis heat dissipation and cooling device according to claim 1, wherein, An installation groove (41) is formed in the dust discharge groove (37), the baffle (42) is slidably installed in the installation groove (41), and the dust discharge groove (37) is closed when the baffle (42) contacts the lower surface of the dust discharge groove (37). An electromagnet (43) is fixedly installed in the installation groove (41), the electromagnet (43) adsorbs the baffle (42) when electrified, and a magnetic structure for the electromagnet (43) to adsorb is arranged on the upper surface of the baffle (42).

3. A computer case heat dissipation and cooling device according to claim 1, characterized in that, A communication chamber (31) is fixedly installed on the inner bottom surface of the box body (1), a plurality of air blowing pipes (32) which penetrate through the net plate (26) upward are communicated with the communication chamber (31), a gap is arranged between the air blowing pipes (32) and the back plate (25), and the communication chamber (31) is communicated with a sealing chamber (7) fixedly installed on the inner bottom surface of the box body (1).

4. The computer chassis heat dissipation and cooling device according to claim 3, characterized in that, A first piston plate (8) is slidably installed in the sealing chamber (7), the first piston plate (8) divides the inside of the sealing chamber (7) into a first cavity (27) and a second cavity (28), a first reciprocating lead screw (9) which drives the first piston plate (8) to move reciprocally is rotatably installed in the sealing chamber (7), a rotary power part (10) which drives the first reciprocating lead screw (9) to rotate is fixedly installed on the inner bottom surface of the box body (1), and the first cavity (27) is respectively communicated with the air inlet cavity (4) and the communication chamber (31) through pipelines, and one-way valves are arranged on the pipelines.

5. The computer chassis heat dissipation and cooling device according to claim 4, wherein, The second cavity (28) is communicated with a second connecting pipe (29) and a third connecting pipe (30). The ends of the second connecting pipe (29) and the third connecting pipe (30) far away from the second cavity (28) both extend into the dust removal cavity (35). The end of the second connecting pipe (29) is located at one end of the dust removal cavity (35) far away from the dust discharge groove (37), and the end of the third connecting pipe (30) is located at one end of the dust removal cavity (35) close to the dust discharge groove (37) and the end of the third connecting pipe (30) points to the dust discharge groove (37). Check valves are arranged on both the second connecting pipe (29) and the third connecting pipe (30).

6. A computer chassis heat dissipation and cooling device according to claim 4, characterized in that, Second reciprocating lead screws (18) are rotatably installed at both ends of the air inlet cavity (4). The second reciprocating lead screws (18) drive the moving plate (17) to reciprocate. A spray head (16) is fixedly installed on the moving plate (17). The spray head (16) faces the direction where the filter holes (5) are located. When the first piston plate (8) moves, it drives the second reciprocating lead screw (18) to rotate and conveys air to the spray head (16).

7. The computer chassis heat dissipation and cooling device according to claim 6, characterized in that, Air collecting cylinders (12) are fixedly installed on both side walls inside the box body (1). A second piston plate (14) is slidably installed inside the air collecting cylinders (12). A sliding rod (11) is fixedly installed on the second piston plate (14). The sliding rod (11) extends into the sealing chamber (7) and is slidably connected with the side wall of the sealing chamber (7). A magnet (24) is fixedly installed at one end of the sliding rod (11) inside the sealing chamber (7), and a magnetic structure for the magnet (24) to adsorb is arranged in the corresponding area on the first piston plate (8). The air collecting cylinder (12) is communicated with a first connecting pipe (15), and the first connecting pipe (15) is communicated with the spray head (16).

8. A computer chassis heat dissipation and cooling device according to claim 7, characterized in that, A sliding plate (13) is fixedly installed on the magnet (24). The sliding plate (13) penetrates through the side wall of the sealing chamber (7) parallel to the sliding rod (11). A rack (23) is fixedly installed at the end of the sliding plate (13). The rack (23) drives a second rotating shaft (21) rotatably installed on the bottom surface of the box body (1) to rotate through a ratchet wheel (22). The second rotating shaft (21) is rotatably connected with a first rotating shaft (20). The first rotating shaft (20) extends into the air inlet cavity (4) and is rotatably connected with the second reciprocating lead screw (18) through a gear set (19).

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