Combined heat dissipation device capable of switching air cooling mode and liquid cooling mode

Abstract

The invention discloses a combined heat dissipation device capable of switching an air cooling mode and a liquid cooling mode, and belongs to the field of case heat dissipation, the combined heat dissipation device comprises a heat dissipation box, an oil cooling plate is mounted on the inner bottom wall of the heat dissipation box, a plurality of partition plates are arranged in the oil cooling plate, oil ways are formed among the partition plates, a cutoff plate is connected in the oil cooling plate, and the cutoff plate is connected with the heat dissipation box. The inner wall of the oil cooling plate is connected with a flow dividing pipe, the flow dividing pipe communicates with a first oil outlet pipe and a second oil outlet pipe, and the outer wall of the first oil outlet pipe communicates with an extension pipe. Therefore, the flow velocity and the flow rate of each subarea oil way can be accurately adjusted according to the actual heat productivity of electrical elements in different areas, stronger oil flow can be supplied to a core area with large heat productivity so as to enhance heat dissipation, and gentle oil flow can be adapted to an edge area with small heat productivity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of case heat dissipation, and particularly relates to a combined heat dissipation device switching air cooling and liquid cooling modes. BACKGROUND

[0002] The combined heat dissipation device switching air cooling and liquid cooling modes is widely applicable to multiple industries with high heat dissipation requirements, and can provide stable heat dissipation for intensive servers in the financial, Internet, government and operator fields in the data center industry, meet the heat dissipation requirements of high-power density equipment in the AI training and enterprise self-built AI cluster scenarios in the artificial intelligence and high-performance computing industry, and adapt to the high reliability requirements of data centers in the financial industry, the heat dissipation requirements of medical imaging equipment and edge computing terminals in the medical industry, the heat dissipation support of high-performance computing centers in the scientific research and education industry, and the heat dissipation requirements of industrial computers and other equipment used in intelligent factories and automated production lines in the manufacturing industry.

[0003] In the design of a traditional oil cooling plate, an oil circulation system usually adopts an integral layout, and the flow channel is not designed in sections, so that the oil flow maintains consistent flow rate in the core area with large heat generation and the edge area with small heat generation, and cannot be adjusted according to the actual heat dissipation requirements of different electrical elements.

[0004] In the design of a traditional air cooling structure, the air flow direction is often not effectively guided and constrained, so that the air flow is disordered and dispersed, and cannot accurately and centrally act on the core heat generation area, so that the heat dissipation potential of the air cooling system cannot be maximized. SUMMARY

[0005] The combined heat dissipation device switching air cooling and liquid cooling modes is provided to solve the problems in the prior art.

[0006] To achieve the above object, the application adopts the following technical scheme. The combined heat dissipation device switching air cooling and liquid cooling modes comprises a heat dissipation box, an oil cooling plate is installed on the inner bottom wall of the heat dissipation box, a plurality of partitions are arranged in the oil cooling plate, an oil path is formed between the partitions, a flow breaking plate is connected to the inside of the oil cooling plate, a flow dividing pipe is connected to the inner wall of the oil cooling plate, a first oil outlet pipe and a second oil outlet pipe are respectively communicated on the flow dividing pipe, an extension pipe is communicated on the outer wall of the first oil outlet pipe, the extension pipe extends to the left side of the flow breaking plate after penetrating through two partitions and the flow breaking plate away from the first oil outlet pipe, a first electromagnetic valve is installed on the first oil outlet pipe and the second oil outlet pipe, a communication pipe is connected to the inside of the flow breaking plate, and a second electromagnetic valve is installed on the communication pipe.

[0007] Preferably, the inner bottom wall of the heat dissipation box is provided with an oil cooler, and the output end and the input end of the oil cooler are communicated with an outflow pipe and a return pipe respectively.

[0008] Preferably, the end of the first connecting pipe away from the outflow pipe penetrates through the oil cooling plate and is communicated with the shunt pipe, the end of the second connecting pipe away from the return pipe is communicated with the oil outlet end of the oil cooling plate, and the oil cooling plate is provided with two buckles which are jointly connected with the second connecting pipe.

[0009] Preferably, the outer wall of the heat dissipation box is provided with two groups of through holes, each group of through holes is provided with two through holes, the inner wall of each group of through holes is provided with a mounting bracket, the inside of each mounting bracket is provided with a fan, the fan is provided with a dust cover, and the bottom surface of the dust cover is movably connected with the outer wall of the heat dissipation box.

[0010] Preferably, the inner bottom wall of the heat dissipation box is provided with two support plates, and the two support plates are jointly provided with a bearing plate, and the bearing plate is provided with two groups of guide plates.

[0011] Preferably, the oil cooling plate is provided with a support frame, and the outer wall of the support frame is connected with the outer wall of two guide plates. The support frame is provided with two ventilation pipes, one side of each ventilation pipe away from the support frame penetrates through the heat dissipation box and extends to the outer wall of the heat dissipation box, the outer wall of each ventilation pipe is provided with a second sliding groove, the bottom surface of each second sliding groove is connected with the heat dissipation box, and the inside of each second sliding groove is movably connected with a second dustproof plate.

[0012] Preferably, the heat dissipation box is provided with a hollow pipe, the inside of the hollow pipe is rotatably connected with a threaded rod, the outer periphery of the threaded rod is threadedly connected with a sliding block, the sliding block is movably connected in the inside of the hollow pipe, the outer wall of the heat dissipation box is provided with a motor, and the output end of the motor is connected with the right end of the threaded rod.

[0013] Preferably, the bottom surface of the hollow pipe is provided with a through groove, the bottom surface of the sliding block is connected with a connecting block, the connecting block is connected with a brush, and the outer wall of the brush is in contact with the outer wall of one dust cover.

[0014] Preferably, the outer wall of the heat dissipation box is provided with a ventilation opening, the right side of the ventilation opening is provided with a first sliding groove, and the inside of the first sliding groove is movably connected with a first dustproof plate.

[0015] Preferably, the upper cover is movably connected to the heat dissipation box, the bottom surface of the heat dissipation box is connected with four bottom pads, the outer wall of the heat dissipation box is connected with a controller, the inner wall of the support frame is connected with a temperature detection device, and the oil cooling plate is respectively provided with an overheating area and a room temperature area.

[0016] Compared with the prior art, the beneficial effects of the present application are: 1. By designing the extension pipe and the communication pipe, the flexibility of oil distribution is improved, and by cooperating the first electromagnetic valve and the second electromagnetic valve, the flow rate and flow of each partitioned oil circuit can be accurately adjusted according to the actual heat generation of electrical elements in different areas, strong oil flow can be supplied to the core area with large heat generation to strengthen heat dissipation, and gentle oil flow can be adapted to the edge area with small heat generation, so as to avoid waste of overall oil flow energy, realize targeted heat dissipation adjustment, and finally significantly improve the heat dissipation efficiency and energy utilization rationality of the oil cooling system.

[0017] 2. By introducing air flow through the through hole and cooperating with the guide plate to guide the formation of orderly air flow, and by constructing a directional air duct through the support frame and the ventilation pipe, cold air can accurately and concentratedly act on the core heat generation area, this design realizes effective constraint and guidance of air flow direction, avoids waste of air flow loss without passing through the key heat generation components, significantly improves the heat dissipation efficiency of the air cooling system, and fully plays the heat dissipation potential of air cooling.

[0018] 3. By rotating the threaded rod driven by the motor, the sliding block moves along the hollow pipe, and the brush is driven by the connecting block to clean the surface of the dust cover, at the same time, the fan can be switched to the reverse mode to generate reverse air flow to blow the blockage cleaned by the brush away from the dust cover, this design can timely remove dust and sundries on the dust cover, avoid the problem of insufficient air intake caused by filter screen blockage, ensure the smoothness of the air flow path of the air cooling system, ensure the long-term stability of the air cooling heat dissipation efficiency, reduce the frequency of manual cleaning, and improve the maintenance convenience and operation reliability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The front view of the combined heat dissipation device switching between air cooling and liquid cooling mode provided by the present application; Figure 2 The internal structure diagram of the heat dissipation box in the combined heat dissipation device switching between air cooling and liquid cooling mode provided by the present application; Figure 3 The internal structure diagram of the oil cooling plate in the combined heat dissipation device switching between air cooling and liquid cooling mode provided by the present application; Figure 4 The structure diagram of the shunt pipe in the combined heat dissipation device switching between air cooling and liquid cooling mode provided by the present application; Figure 5Structure diagram of through hole in combined heat dissipation device switching between air cooling and liquid cooling mode according to the present application; Figure 6 Structure diagram of support plate in combined heat dissipation device switching between air cooling and liquid cooling mode according to the present application; Figure 7 Structure diagram of hollow pipe in combined heat dissipation device switching between air cooling and liquid cooling mode according to the present application; Figure 8 Left view of combined heat dissipation device switching between air cooling and liquid cooling mode according to the present application.

[0020] In the figure: 1, heat dissipation box; 2, oil cooling plate; 3, partition plate; 4, oil path; 5, cut-off plate; 6, shunt pipe; 7, first oil outlet pipe; 8, second oil outlet pipe; 9, extension pipe; 10, first electromagnetic valve; 11, communication pipe; 12, second electromagnetic valve; 13, oil cooling machine; 14, outflow pipe; 15, backflow pipe; 16, first connecting pipe; 17, second connecting pipe; 18, buckle; 19, through hole; 20, mounting frame; 21, fan; 22, support plate; 23, bearing plate; 24, guide plate; 25, support frame; 26, ventilation pipe; 27, hollow pipe; 28, threaded rod; 29, sliding block; 30, through slot; 31, connecting block; 32, brush; 33, dust cover; 34, ventilation opening; 35, first sliding slot; 36, first dustproof plate; 37, second sliding slot; 38, second dustproof plate; 39, upper cover; 40, bottom pad; 41, controller; 42, temperature detection device; 43, overheating area; 44, room temperature area; 45, motor. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0022] Embodiment, refer to Figures 1-8The combined heat dissipation device for switching air cooling and liquid cooling mode comprises a heat dissipation box 1, an oil cooling plate 2 is installed on the inner bottom wall of the heat dissipation box 1, a plurality of partitions 3 are arranged in the oil cooling plate 2, the outer surfaces of the plurality of partitions 3 jointly form an oil path 4, a flow breaking plate 5 is connected in the oil cooling plate 2, the flow breaking plate 5 is installed in the oil cooling plate 2, and the oil path 4 formed by the plurality of partitions 3 in the oil cooling plate 2 is divided into independent flow channels corresponding to overheated areas 43 and room temperature areas 44, so that the cooling liquid can be prevented from flowing disorderly between different heat generating areas and the oil flow can be accurately distributed according to requirements, the flow breaking plate 5 is internally connected with a communication pipe 11, the opening and closing states of a second electromagnetic valve 12 on the communication pipe 11 can be controlled, the mutual communication of the cooling liquid between the two independent flow channels can be flexibly adjusted, and the oil flow speed and flow of the overheated areas 43 and the room temperature areas 44 can be further optimized in cooperation with a first oil outlet pipe 7, a second oil outlet pipe 8 and an extension pipe 9 separated from the flow dividing pipe 6, targeted heat dissipation is realized, and the heat dissipation efficiency and energy utilization rationality of the oil cooling plate 2 are effectively improved, the inner wall of the oil cooling plate 2 is connected with the flow dividing pipe 6, the outer surfaces of the flow dividing pipe 6 are respectively communicated with the first oil outlet pipe 7 and the second oil outlet pipe 8, the outer surface of the first oil outlet pipe 7 is communicated with the extension pipe 9, one end of the extension pipe 9 away from the first oil outlet pipe 7 extends to the left side surface of the flow breaking plate 5 after penetrating through the two partitions 3 and the flow breaking plate 5, the outer surfaces of the first oil outlet pipe 7 and the second oil outlet pipe 8 are both provided with the first electromagnetic valve 10, the inner part of the flow breaking plate 5 is connected with the communication pipe 11, and the outer surface of the communication pipe 11 is provided with the second electromagnetic valve 12.

[0023] The oil used in the embodiment is preferably insulating oil, and more preferably transformer insulating oil.

[0024] Further, the inner bottom wall of the heat dissipation box 1 is provided with a cooling oil machine 13, the cooling oil machine 13 is an existing refrigeration equipment which is mature in technology and widely used, the specific working principle thereof belongs to the public knowledge in the industry, and thus will not be described here, the output end and the input end of the cooling oil machine 13 are respectively communicated with an outflow pipe 14 and a backflow pipe 15, the outer surface of the outflow pipe 14 and the outer surface of the backflow pipe 15 are respectively communicated with a first connecting pipe 16 and a second connecting pipe 17.

[0025] Further, one end of the first connecting pipe 16 away from the outflow pipe 14 penetrates through the oil cooling plate 2 and is communicated with the outer surface of the flow dividing pipe 6, one end of the second connecting pipe 17 away from the backflow pipe 15 is communicated with the oil outlet end of the oil cooling plate 2, the outer surfaces of two buckles 18 are jointly clamped with the outer surface of the second connecting pipe 17.

[0026] Further, the outer surface of the heat dissipation box 1 is provided with two groups of through holes 19, each group of through holes 19 is provided with two through holes, and the inner wall of each group of through holes 19 is connected with a mounting rack 20. The inside of each mounting rack 20 is provided with a fan 21, and the outer surface of the fan 21 is provided with a dust cover 33. The bottom surface of the dust cover 33 is movably connected with the outer surface of the heat dissipation box 1. When the temperature detection device 42 on the inner wall of the support frame 25 determines that the fan needs to be started, the fan 21 is fixed on the through hole 19 on the outer surface of the heat dissipation box 1 through the mounting rack 20. After starting, the fan 21 generates air suction to suck the external cold air into the heat dissipation box 1 through the dust cover 33. The sucked cold air is then guided by the guide plate 24 on the bearing plate 23, and flows accurately to the electrical elements in the overheating area 43 and the room temperature area 44 of the oil cooling plate 2. The heat is removed through heat exchange between the airflow and the elements. Finally, the hot air is discharged through the ventilation pipe 26 connected with the support frame 25, providing stable air cooling for the device.

[0027] Further, the inner bottom wall of the heat dissipation box 1 is connected with two support plates 22, and the outer surfaces of the two support plates 22 are jointly connected with a bearing plate 23. The upper surface of the bearing plate 23 is provided with two groups of guide plates 24, and each group of guide plates 24 is provided with two guide plates.

[0028] Further, the upper surface of the oil cooling plate 2 is connected with a support frame 25, the outer surface of the support frame 25 is connected with the outer surfaces of two guide plates 24, and the support frame 25 cooperates with the upper cover 39 to form a relatively closed space above the oil cooling plate 2. The closed environment can effectively constrain the airflow introduced by the fan 21 and guided by the guide plate 24, avoiding turbulence, dispersion or leakage of the airflow during the flow process, ensuring that the cold air can flow through the overheating area 43 and the room temperature area 44 of the oil cooling plate 2 in a concentrated and directional manner, providing a stable airflow path for the subsequent hot airflow to smoothly pass through the ventilation pipe 26, thereby facilitating the formation of a complete and efficient air duct.

[0029] Further, the outer surface of the support frame 25 is connected with two ventilation pipes 26, and each ventilation pipe 26 extends to the outer surface of the heat dissipation box 1 away from the support frame 25. The outer surface of each ventilation pipe 26 is provided with a second sliding groove 37, and the bottom surface of each second sliding groove 37 is connected with the outer surface of the heat dissipation box 1. The inside of each second sliding groove 37 is slidably connected with a second dust plate 38. Since the second dust plate 38 only serves as a protection component for the air outlet of the ventilation pipe 26, its main function is to block external dust from entering the inside of the heat dissipation box 1 through the ventilation pipe 26 when the air cooling system is not working. When the air cooling mode is running, the hot airflow will be discharged from the ventilation pipe 26. The airflow can naturally carry away a small amount of dust attached to the surface of the second dust plate 38, so it is not easy to cause blockage. Therefore, it is not necessary to additionally provide a special cleaning mechanism for it.

[0030] Further, the outer surface of the heat dissipation box 1 is provided with a hollow tube 27, the inside of the hollow tube 27 is rotatably connected with a threaded rod 28, the outer surface of the threaded rod 28 is threadedly connected with a sliding block 29, the outer surface of the sliding block 29 is slidably connected in the inside of the hollow tube 27, the outer surface of the heat dissipation box 1 is provided with a motor 45, the output end of the motor 45 is connected with the right end of the threaded rod 28, the hollow tube 27 serves as a mounting carrier of the threaded rod 28 and the sliding block 29, and provides a stable containing space for the threaded rod 28 and the sliding block 29, so that the threaded rod 28 can stably rotate, meanwhile, the inner wall of the hollow tube 27 and the outer surface of the sliding block 29 are in sliding fit, the movement track of the sliding block 29 is accurately constrained, the sliding block 29 can stably move along a straight line, and then the brush 32 is driven by the connecting block 31 to orderly move in the range of the through groove 30, so that the cleaning action on the dust cover 33 is accurate and effective, and a structural basis for stable operation of the dust cleaning mechanism is provided.

[0031] Further, the bottom surface of the hollow tube 27 is provided with a through groove 30, the bottom surface of the sliding block 29 is connected with a connecting block 31, the upper surface of the connecting block 31 is connected with a brush 32, the outer surface of the brush 32 is in contact with the outer surface of one of the dust covers 33, the material of the brush 32 is nylon, has good toughness and wear resistance, can effectively sweep the accumulated dust on the surface of the dust cover 33 during cleaning, and is not easy to break due to long-term friction, has a long service life, and the soft nylon wire can avoid scratching the filter screen structure of the dust cover 33, and protect the dustproof effect from being damaged.

[0032] Further, the outer surface of the heat dissipation box 1 is provided with a ventilation opening 34, the right side of the ventilation opening 34 is provided with a first sliding groove 35, the inside of the first sliding groove 35 is slidably connected with a first dustproof plate 36, the ventilation opening 34 is a channel specially reserved for heat dissipation of the oil cooler 13, and is used for guaranteeing air circulation required for heat dissipation of the oil cooler 13 during work, assisting the oil cooler 13 to timely discharge the heat generated inside, and ensuring stable operation of the oil cooler 13.

[0033] Further, the upper surface of the heat dissipation box 1 is movably connected with an upper cover 39, the bottom surface of the heat dissipation box 1 is connected with four bottom pads 40, the outer surface of the heat dissipation box 1 is connected with a controller 41, the inner wall of the supporting frame 25 is connected with a temperature detection device 42, and the upper surface of the oil cooling plate 2 is respectively provided with an overheating area 43 and a room temperature area 44, according to the monitored temperature value, the temperature detection device 42 provides a judgment basis for switching of the air cooling and liquid cooling modes, when the temperature is relatively low and high-intensity heat dissipation is not required, the corresponding air cooling mode of the fan 21 is triggered and started through the controller 41, when the temperature rises to a threshold value requiring intensified heat dissipation, the corresponding liquid cooling mode of the oil cooler 13, the shunt pipe 6 and the related pipelines is triggered and started.

[0034] The working principle of the present application is that: first, the electrical components with large heat generation are installed in the overheating area 43 of the oil cooling plate 2, and the electrical components with small heat generation are installed in the room temperature area 44, then the cover 39 is closed, the temperature detection device 42 on the inner wall of the support frame 25 monitors the temperature inside the heat dissipation box 1 in real time, so as to determine whether to start the air cooling or liquid cooling mode, when the temperature detection device 42 detects that the temperature is at a low oil level and liquid cooling is not needed, the controller 41 starts the fan 21 in the mounting bracket 20, then the fan 21 inhales cold air through the through hole 19 on the outer surface of the heat dissipation box 1, the dust cover 33 can prevent dust from entering, the cold air is guided by the two groups of guide plates 24 on the bearing plate 23, then enters the support frame 25, and the electrical components in the overheating area 43 and the room temperature area 44 are accurately blown, the hot air after heat exchange is discharged from the heat dissipation box 1 through the ventilation pipe 26 connected with the support frame 25, the second dust plate 38 in the second sliding groove 37 can prevent dust from entering from the ventilation pipe 26 when the air cooling is not working, when the dust cover 33 is blocked, the motor 45 drives the threaded rod 28 in the hollow pipe 27 to rotate, so that the sliding block 29 slides along the hollow pipe 27, the sliding block 29 drives the brush 32 to move along the through slot 30 through the connecting block 31, and the dust cover 33 is cleaned, and at the same time, the fan 21 is reversed to blow away the cleaned blockage, when the temperature detection device 42 detects that the temperature is high and liquid cooling is needed, the cold oil machine 13 is started, the cooling liquid generated by the cold oil machine 13 is transported to the oil distribution pipe 6 in the oil cooling plate 2 through the outflow pipe 14 and the first connecting pipe 16, according to the heat dissipation requirements of the overheating area 43 and the room temperature area 44, the opening and closing of the first electromagnetic valve 10 on the first oil outlet pipe 7 and the second oil outlet pipe 8 and the second electromagnetic valve 12 on the communication pipe 11 in the flow breaking plate 5 are controlled, the opening degree of the valve is adjusted, more cooling liquid is transported to the oil path 4 corresponding to the overheating area 43 formed by the partition plate 3 through the extension pipe 9, and less cooling liquid is transported to the oil path 4 corresponding to the room temperature area 44, so as to realize targeted heat dissipation, the cooling liquid after heat exchange is returned to the cold oil machine 13 for cooling again through the second connecting pipe 17 on the oil outlet end of the oil cooling plate 2 and the return pipe 15, and the buckle 18 fixes the second connecting pipe 17.

[0035] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A combined heat dissipation device that switches between air cooling and liquid cooling, comprising a heat dissipation box (1), characterized in that, The inner bottom wall of the heat sink (1) is equipped with an oil cooling plate (2). The oil cooling plate (2) is provided with multiple partitions (3). An oil passage (4) is formed between the multiple partitions (3). The oil cooling plate (2) is connected to a flow cut-off plate (5). The inner wall of the oil cooling plate (2) is connected to a diversion pipe (6). The diversion pipe (6) is connected to a first oil outlet pipe (7) and a second oil outlet pipe (8). The outer wall of the first oil outlet pipe (7) is connected to an extension pipe (9). The end of the extension pipe (9) away from the first oil outlet pipe (7) passes through the two partitions (3) and the flow cut-off plate (5) and extends to the left side of the flow cut-off plate (5). A first solenoid valve (10) is installed on both the first oil outlet pipe (7) and the second oil outlet pipe (8). The inside of the flow cut-off plate (5) is connected to a connecting pipe (11). A second solenoid valve (12) is installed on the connecting pipe (11).

2. The combined heat dissipation device for switching between air cooling and liquid cooling as described in claim 1, characterized in that, The inner bottom wall of the heat sink (1) is equipped with an oil cooler (13). The output end and input end of the oil cooler (13) are respectively connected to an outlet pipe (14) and a return pipe (15). The outer walls of the outlet pipe (14) and the return pipe (15) are respectively connected to a first connecting pipe (16) and a second connecting pipe (17).

3. The combined heat dissipation device for switching between air cooling and liquid cooling as described in claim 2, characterized in that, The end of the first connecting pipe (16) away from the outlet pipe (14) passes through the oil cooling plate (2) and is connected to the diversion pipe (6). The end of the second connecting pipe (17) away from the return pipe (15) is connected to the oil outlet end of the oil cooling plate (2). Two buckles (18) are connected on the oil cooling plate (2), and the two buckles (18) are engaged with the second connecting pipe (17).

4. The combined heat dissipation device for switching between air cooling and liquid cooling as described in claim 1, characterized in that, The outer wall of the heat sink (1) is provided with two sets of through holes (19), and the number of through holes (19) in each set is set to two. The inner wall of each set of through holes (19) is connected to a mounting bracket (20). A fan (21) is installed inside each mounting bracket (20). A dust cover (33) is provided on the fan (21). The bottom surface of the dust cover (33) is movably connected to the outer wall of the heat sink (1).

5. The combined heat dissipation device for switching between air cooling and liquid cooling as described in claim 1, characterized in that, The inner bottom wall of the heat sink (1) is connected to two support plates (22), and a bearing plate (23) is connected to both support plates (22). Two sets of guide plates (24) are installed on the bearing plate (23), and the number of each set of guide plates (24) is set to two.

6. The combined heat dissipation device for switching between air cooling and liquid cooling as described in claim 1, characterized in that, A support frame (25) is connected to the oil cooling plate (2), and the outer wall of the support frame (25) is connected to the outer wall of two of the guide plates (24); The support frame (25) is connected to two ventilation pipes (26). The side of each ventilation pipe (26) away from the support frame (25) passes through the heat sink (1) and extends to the outer wall of the heat sink (1). The outer wall of each ventilation pipe (26) is provided with a second sliding groove (37). The bottom surface of each second sliding groove (37) is connected to the heat sink (1). A second dustproof plate (38) is slidably connected inside each second sliding groove (37).

7. The combined heat dissipation device for switching between air cooling and liquid cooling as described in claim 1, characterized in that, A hollow tube (27) is installed on the heat sink (1). A threaded rod (28) is rotatably connected inside the hollow tube (27). A slider (29) is threadedly connected to the outer side of the threaded rod (28). The slider (29) is slidably connected inside the hollow tube (27). A motor (45) is installed on the outer wall of the heat sink (1). The output end of the motor (45) is connected to the right end of the threaded rod (28).

8. The combined heat dissipation device for switching between air cooling and liquid cooling as described in claim 7, characterized in that, The bottom surface of the hollow tube (27) is provided with a through groove (30), the bottom surface of the slider (29) is connected to a connecting block (31), a brush (32) is connected to the connecting block (31), and the outer wall of the brush (32) is in contact with the outer wall of one of the dust covers (33).

9. The combined heat dissipation device for switching between air cooling and liquid cooling as described in claim 1, characterized in that, The outer wall of the heat sink (1) is provided with a ventilation opening (34), and a first sliding groove (35) is provided on the right side of the ventilation opening (34). A first dustproof plate (36) is slidably connected inside the first sliding groove (35).

10. The combined heat dissipation device for switching between air cooling and liquid cooling methods according to claim 6, characterized in that, The heat sink (1) is movably connected to a top cover (39), the bottom surface of the heat sink (1) is connected to four bottom pads (40), the outer wall of the heat sink (1) is connected to a controller (41), the inner wall of the support frame (25) is connected to a temperature detection device (42), and the oil cooling plate (2) is provided with an overheating zone (43) and a room temperature zone (44).

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