CN116088646A - Heat dissipation dust protected computer mainframe case - Google Patents

Abstract

The invention provides a heat-dissipation dustproof computer host case, which comprises: the box body is internally provided with a mounting cavity and an induced draft cavity, a fan is mounted in the mounting cavity, the side part of the box body is connected with a dustproof exhaust box in a sliding manner, the inner side of the dustproof exhaust box is opened, and the side wall of the dustproof exhaust box is provided with a plurality of heat dissipation holes; the dustproof exhaust box is provided with a first position state and a second position state; the driving mechanism is used for driving the dustproof exhaust box to move so as to drive the dustproof exhaust box to switch between a first position state and a second position state. According to the invention, the movable dustproof exhaust box is arranged on the box body, and is driven to move by the driving mechanism, when the computer is used, the dustproof exhaust box is driven to be in the second position state by the driving mechanism to dissipate heat, and after the computer stops working, the dustproof exhaust box is driven to be in the first position state by the driving mechanism, so that dust accumulation caused by exposure of the heat dissipation holes is avoided, insects can be prevented from entering the box body, and the dustproof effect is achieved.

Description

Heat dissipation dust protected computer mainframe case

Technical Field

The invention relates to the technical field of computers, in particular to a heat-dissipation dustproof computer host case.

Background

The computer is a modern electronic computing machine for high-speed computing, can perform numerical computation and logic computation, has a memory function, is a modern intelligent electronic device capable of automatically and high-speed processing mass data according to program operation, and consists of a hardware system and a software system.

The general desk computer consists of a display screen and a host, and a CPU and various electronic elements in the host can generate heat in the use process. In order to ensure the normal operation of the computer, the heat generated in the computer must be dissipated in time. At present, for a common computer, air cooling heat dissipation is the most common, and is very simple, a heat dissipation hole is directly formed in a case, a fan is arranged in the case, external air is introduced into the case by rotation of the fan, the external air flows through the heat in the case, but the computer is used for a long time, the heat dissipation hole is exposed, dust is easily accumulated at the heat dissipation hole, the heat dissipation hole part needs to be cleaned regularly, dust, insects and the like can enter the case from the heat dissipation hole, dust, insect eggs and the like can be accumulated on electric elements in the case, the working efficiency of the computer can be reduced by long-time use, the case needs to be cleaned regularly, and time and labor are wasted.

Disclosure of Invention

Based on the technical problems in the background technology, the invention provides a heat-dissipation dustproof computer host case.

The invention provides a heat-dissipation dustproof computer host case, which comprises:

the box body is internally provided with a mounting cavity and an induced air cavity for introducing external air into the mounting cavity, a fan is mounted in the mounting cavity, a mounting opening is formed in the side part of the box body, a dustproof exhaust box is connected in a sliding manner in the mounting opening, the inner side of the dustproof exhaust box is opened, and a plurality of heat dissipation holes are formed in the side wall of the dustproof exhaust box; the dustproof exhaust box is provided with a first position state and a second position state, and when the dustproof exhaust box is in the first position state, a plurality of radiating holes of the dustproof exhaust box are positioned in the box body; when the dustproof exhaust box is in the second position state, a plurality of heat dissipation holes of the dustproof exhaust box are positioned outside the box body;

the driving mechanism is used for driving the dustproof exhaust box to move so as to drive the dustproof exhaust box to switch between a first position state and a second position state.

Preferably, an air inlet communicated with the air inducing cavity is formed in the box body, an air inlet box is detachably arranged in the air inducing opening, the inner side of the air inlet box is open, and a plurality of air inlet holes communicated with the air inducing cavity are distributed on the outer side of the air inlet box.

Preferably, a plurality of filter screens are arranged in the induced air cavity close to the air inlet box.

Preferably, a fixed ring plate is fixedly arranged in the induced air cavity near the induced air port, a movable ring plate is arranged on one side of the fixed ring plate near the induced air port and connected with the fixed ring plate through a plurality of elastic pieces, the inner side end of the air inlet box is propped against the movable ring plate, and a plurality of pressing plates propped against the outer side end of the air inlet box are rotationally connected outside the box near the induced air port.

Preferably, a permanent magnet is arranged on one side of the movable ring plate, which is close to the air inlet box, and a metal sheet which is attracted with the permanent magnet is arranged at the inner side end of the air inlet box.

Preferably, an upper partition plate and a lower partition plate which are arranged up and down are arranged in the box body, and the upper partition plate and the lower partition plate divide the box body into an exhaust cavity, a mounting cavity and an induced draft cavity which are arranged up and down in sequence; the upper partition plate is provided with a communication port which is communicated with the exhaust cavity and the installation cavity, the inner wall of the installation cavity is fixed with an isolation box, the top end of the isolation box is communicated with the exhaust cavity, the installation port is communicated with the isolation box, and when the dustproof exhaust box is in a first position state, the dustproof exhaust box is positioned in the isolation box; the lower partition plate is provided with a plurality of ventilation pipes which are communicated with the induced air cavity and the installation cavity in a penetrating way.

Preferably, the driving mechanism comprises a rotating shaft and a gear, the rotating shaft is vertically arranged in the mounting cavity, the top end of the rotating shaft sequentially penetrates through the upper partition plate and the box body to extend out of the box body, the rotating shaft is in rotating fit connection with the upper partition plate and the box body, and the top end of the rotating shaft is connected with a knob; the gear is fixed at the bottom end of the rotating shaft; the dustproof exhaust box is connected with a connecting rod which is horizontally arranged, the connecting rod penetrates through the isolation box and is in sliding sealing fit with the isolation box, and the connecting rod is provided with tooth parts meshed with gears.

Preferably, the two opposite side walls of the box body are provided with mounting openings which are arranged oppositely, the two mounting openings are internally provided with dustproof exhaust boxes in a sliding manner, and the driving mechanism is used for driving the two dustproof exhaust boxes to move; the installation cavity is fixed with the isolation box and two isolation box tops all communicate with the exhaust cavity relative two inner walls, and two installing ports communicate with two isolation boxes respectively, and when two dustproof exhaust boxes are in the first position state, two dustproof exhaust boxes are located two isolation boxes respectively.

Preferably, the air guide device further comprises a cooling mechanism for cooling the air introduced by the air guide cavity.

Preferably, the cooling mechanism comprises a cooling liquid tank filled with cooling liquid, the cooling liquid tank is fixed on the lower partition plate, a delivery pump is arranged in the cooling liquid tank, a liquid inlet cavity filled with the cooling liquid and a liquid outlet cavity are arranged in the lower partition plate, the liquid inlet cavity is connected with the delivery pump through a liquid inlet pipe, the liquid outlet cavity is communicated with the cooling liquid tank through a liquid outlet pipe, and one ends of the liquid inlet cavity and the liquid outlet cavity, which are far away from the cooling liquid tank, are mutually communicated; the ventilation pipe penetrates through the liquid inlet cavity and the liquid outlet cavity.

The invention provides a radiating dustproof computer host case, which is characterized in that a movable dustproof exhaust box is arranged on a case body and is driven to move by a driving mechanism, when the computer is used, the dustproof exhaust box is driven to be in a second position state by the driving mechanism, a fan rotates, external wind enters an induced air cavity and then enters a mounting cavity, finally, the external wind is discharged from a radiating hole, and heat generated by the operation of electric elements in the case body is taken away in the flowing process of the wind; after the computer stops working, the dustproof exhaust box is driven to enter a first position state through the driving mechanism, so that a plurality of radiating holes of the dustproof exhaust box are positioned in the box body, dust accumulation caused by exposure of the radiating holes is avoided, insects can be prevented from entering the box body, and the dustproof effect is achieved;

the air inlet box is arranged and detachable, and because the air can carry certain dust during circulation, the diameter of the air inlet hole can be controlled to filter the air, so that the dust is prevented from entering the box body, and the air inlet box can be detached and cleaned regularly;

through the arrangement of the upper partition plate, the lower partition plate and the isolation box, the circulation path of cooling air is prolonged, and the cooling air is ensured to take away the heat in the installation cavity;

the specific structure of the driving mechanism is that the knob is rotated to drive the rotating shaft to rotate, the rotating shaft drives the gear to rotate, the gear drives the two connecting rods to move, and the two connecting rods respectively drive the two dustproof exhaust boxes to move, so that the movement of the dustproof exhaust boxes is conveniently controlled;

the cooling mechanism is arranged, so that the air introduced by the air inducing cavity can be cooled, and the heat dissipation effect is improved.

Drawings

Fig. 1 is a schematic structural diagram of a heat dissipation dustproof computer mainframe box according to the present invention;

FIG. 2 is a schematic diagram of a dustproof computer mainframe with heat dissipation;

FIG. 3 is a cross-sectional view of a dustproof computer mainframe with heat dissipation;

FIG. 4 is an enlarged view of FIG. 3 at A;

FIG. 5 is a schematic diagram of a portion of a computer mainframe with dustproof heat dissipation structure according to the present invention;

FIG. 6 is a schematic diagram of a portion of a computer mainframe with dustproof heat dissipation structure according to the present invention;

fig. 7 is a schematic structural diagram of an air inlet box in a heat dissipation dustproof computer mainframe box according to the present invention;

FIG. 8 is a schematic diagram of a portion of a computer mainframe with dustproof heat dissipation structure according to the present invention;

FIG. 9 is a schematic view of a portion of the structure of FIG. 8;

fig. 10 is a schematic structural diagram of a driving mechanism in a heat dissipation dustproof computer mainframe box according to the present invention.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

Referring to fig. 1-10, the present invention provides a heat dissipation dustproof computer mainframe box, comprising:

the box body 100, the box body 100 is internally provided with a mounting cavity 110 and an induced air cavity 120 for introducing external air into the mounting cavity 110, a fan is mounted in the mounting cavity 110 and an electric element is mounted in the mounting cavity, the side part of the box body 100 is provided with a mounting opening and is in sliding connection with a dustproof exhaust box 130, the inner side of the dustproof exhaust box 130 is opened, and the side wall of the dustproof exhaust box 130 is provided with a plurality of heat dissipation holes 131; the dust-proof exhaust box 130 has a first position state and a second position state, and when the dust-proof exhaust box 130 is in the first position state, the plurality of heat dissipation holes 131 of the dust-proof exhaust box 130 are located in the box 100; when the dustproof exhaust box 130 is in the second position state, the plurality of heat dissipation holes 131 of the dustproof exhaust box 130 are positioned outside the box body 100;

the driving mechanism 200 is used for driving the dust exhaust box 130 to move so as to drive the dust exhaust box 130 to switch between a first position state and a second position state.

In this embodiment, the movable dust-proof air exhaust box 130 is arranged on the box body 100, and the driving mechanism 200 is used to drive the dust-proof air exhaust box 130 to move, when the computer is in use, the driving mechanism 200 is used to drive the dust-proof air exhaust box 130 to be in a second position state, the fan rotates, external wind enters the air intake cavity 120 and then enters the installation cavity 110, finally, the external wind is discharged out of the box body 100 from the heat dissipation hole 131, and in the flowing process, the wind takes away heat generated by the operation of electrical elements in the box body 100; after the computer stops working, the dustproof exhaust box 130 is driven to enter the first position state through the driving mechanism 200, so that a plurality of radiating holes 131 of the dustproof exhaust box 130 are positioned in the box body 100, dust accumulation caused by exposure of the radiating holes 131 is avoided, insects can be prevented from entering the box body 100, and the dustproof effect is achieved. Here, in order to avoid affecting the user's use, the dust-proof air exhaust box 130 is provided at the side of the case 100.

As a specific embodiment, in order to improve the heat dissipation effect, the opposite side walls of the case 100 are provided with mounting openings and the two mounting openings are arranged oppositely, the dustproof exhaust boxes 130 are slidably mounted in the two mounting openings, and the driving mechanism 200 is used for driving the two dustproof exhaust boxes 130 to move.

Referring to fig. 1-7, as a specific embodiment, in order to facilitate external wind entering the box 100, an air inlet communicating with the air guiding cavity 120 is provided on the box 100, an air inlet box 140 is detachably installed in the air inlet, the inner side of the air inlet box 140 is opened, and a plurality of air inlet holes 141 communicating with the air guiding cavity 120 are distributed on the outer side of the air inlet box 140. When the fan rotates, external wind enters the box body 100 from the air inlet 141; because the wind can carry certain dust when circulating, can control the diameter of fresh air inlet 141 and filter the wind, avoid the dust to get into in the box 100, further, fresh air inlet box 140 can dismantle, can regularly dismantle fresh air inlet box 140 and wash, here, for the user dismouting fresh air inlet box 140, can install fresh air inlet box 140 at the front end of box 100.

Referring to fig. 3, 4 and 7, as a specific embodiment, in order to facilitate the disassembly and assembly of the air inlet box 140, a fixed ring plate 122 is fixedly installed in the air inlet chamber 120 near the air inlet, a movable ring plate 123 is disposed on one side of the fixed ring plate 122 near the air inlet, the movable ring plate 123 is connected with the fixed ring plate 122 through a plurality of elastic members 124, the inner side end of the air inlet box 140 is pressed against the movable ring plate 123, a permanent magnet is disposed on one side of the movable ring plate 123 near the air inlet box 140, and a metal sheet 142 attracted by the permanent magnet is disposed on the inner side end of the air inlet box 140. A plurality of pressing plates 150 which are propped against the outer side end of the air inlet box 140 are rotatably connected to the outer side of the box body 100 close to the air inlet. When the air inlet box 140 is installed, the pressing plate 150 is rotated to prevent the pressing plate 150 from affecting the air inlet box 140, the air inlet box 140 is pushed into the air inlet, the permanent magnet is attracted with the metal sheet 142, the air inlet box 140 continues to move inwards to press the movable ring plate 123, so that the plurality of elastic pieces 124 are compressed, and after the outer side surface of the air inlet box 140 is flush with the outer side surface of the box body 100, the pressing plate 150 is rotated to enable the pressing plate 150 to abut against the outer side of the air inlet box 140 to limit and block the air inlet box 140; when the air inlet box 140 is disassembled, the rotating pressing plate 150 releases the limit blocking of the air inlet box 140, the air inlet box 140 moves outwards under the elastic action of the elastic pieces 124, and the elastic pieces 124. The moving ring plate 123 is restored to the original state, and then the air inlet box 140 can be directly taken out.

Referring to fig. 3-4, as a preferred embodiment, a plurality of filter screens 121 are installed in the air induction chamber 120 near the air inlet box 140. The wind entering the box body 100 is further filtered through the filter screen 121, so that dust is thoroughly prevented from entering the box body 100.

Referring to fig. 3, 5, 6, 8 and 9, as a preferred embodiment, in order to improve the heat dissipation effect, an upper partition 160 and a lower partition 170 are installed in the box 100, and the upper partition 160 and the lower partition 170 divide the interior of the box 100 into an air exhaust chamber 180, an installation chamber 110 and an air introduction chamber 120, which are sequentially arranged up and down. The upper partition 160 is provided with a communication port 161 for communicating the exhaust chamber 180 with the installation chamber 110. The two opposite inner walls of the installation cavity 110 are respectively fixed with an isolation box 190, the top ends of the two isolation boxes 190 are respectively communicated with the exhaust cavity 180, the two installation openings are respectively communicated with the two isolation boxes 190, and when the two dustproof exhaust boxes 130 are in a first position state, the two dustproof exhaust boxes 130 are respectively positioned in the two isolation boxes 190. The lower partition 170 is provided with a plurality of ventilation pipes 171 penetrating therethrough to communicate the induced draft chamber 120 with the installation chamber 110. So arranged, the external wind enters the induced air cavity 120 from the air inlet, then enters the installation cavity 110 through the ventilation pipe 171, enters the exhaust cavity 180 from the communication port 161 after the installation cavity 110 circulates, finally enters the isolation box 190, and is discharged through the heat dissipation holes 131 of the dustproof exhaust box 130; the communication port 161 is provided at the end of the upper partition 160 away from the isolation box 190 to extend the flow path of the cooling air, thereby ensuring that the cooling air can take away the heat in the installation cavity 110.

Here, it should be noted that, in order to facilitate the maintenance of the computer in a later period, an opening communicating with the installation cavity 110 is provided on the front side or the side of the case 100, and a panel is detachably connected to the opening in a sealing fit manner, and the panel may be connected in a clamping manner.

Referring to fig. 10, as a preferred embodiment, the driving mechanism 200 includes a rotating shaft 210 and a gear 220, the rotating shaft 210 is vertically disposed in the installation cavity 110, the top end of the rotating shaft 210 sequentially passes through the upper partition 160 and the case 100 to extend out of the case 100, the rotating shaft 210 is in rotational fit connection with the upper partition 160 and the case 100, and the top end of the rotating shaft 210 is connected with a knob 230; the gear 220 is fixed at the bottom end of the rotating shaft 210; the dust-proof exhaust box 130 is connected with a connecting rod 240 which is horizontally arranged, the connecting rod 240 penetrates through the isolation box 190 and is in sliding sealing fit with the isolation box 190, and the connecting rod 240 is provided with a tooth part 241 meshed with the gear 220. The user rotates the knob 230 to drive the rotating shaft 210 to rotate, the rotating shaft 210 drives the gear 220 to rotate, the gear 220 drives the two connecting rods 240 to move, and the two connecting rods 240 respectively drive the two dustproof exhaust boxes 130 to move. For convenience of use, a knob 230 may be provided at the top end of the case 100.

Referring to fig. 3-6, 8 and 9, as a preferred embodiment, to further improve the heat dissipation effect, the cooling device 300 further includes a cooling mechanism 300, where the cooling mechanism 300 is used for cooling the wind introduced by the wind introducing cavity 120. Specifically, the cooling mechanism 300 includes a cooling liquid tank 310 filled with cooling liquid, the cooling liquid tank 310 is fixed on the lower partition 170, a delivery pump 320 is installed in the cooling liquid tank 310, a liquid inlet cavity 172 filled with cooling liquid and a liquid outlet cavity 173 are arranged in the lower partition 170, the liquid inlet cavity 172 is connected with the delivery pump 320 through a liquid inlet pipe 174, the liquid outlet cavity 173 is communicated with the cooling liquid tank 310 through a liquid outlet pipe 175, and one ends of the liquid inlet cavity 172 and the liquid outlet cavity 173 far away from the cooling liquid tank 310 are mutually communicated; the ventilation pipe 171 penetrates the liquid inlet chamber 172 and the liquid outlet chamber 173. The cooling liquid is conveyed into the liquid inlet cavity 172 through the conveying pump 320, so that the cooling liquid in the liquid inlet cavity 172 flows into the liquid outlet cavity 173, the cooling liquid in the liquid outlet cavity 173 returns into the cooling liquid tank 310 through the liquid outlet pipe 175, the lower partition plate 170 is cooled, and when cooling air passes through the ventilation pipe 171, heat exchange is carried out to cool.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (10)

1. A heat-dissipating, dust-protected computer mainframe chassis, comprising:

the box body (100), the box body (100) is internally provided with a mounting cavity (110) and an induced air cavity (120) for introducing external air into the mounting cavity (110), a fan is mounted in the mounting cavity (110), the side part of the box body (100) is provided with a mounting opening and is slidably connected with a dustproof exhaust box (130), the inner side of the dustproof exhaust box (130) is opened, and the side wall of the dustproof exhaust box (130) is provided with a plurality of radiating holes (131); the dustproof exhaust box (130) is provided with a first position state and a second position state, and when the dustproof exhaust box (130) is in the first position state, a plurality of radiating holes (131) of the dustproof exhaust box (130) are positioned in the box body (100); when the dustproof exhaust box (130) is in the second position state, a plurality of radiating holes (131) of the dustproof exhaust box (130) are positioned outside the box body (100);

the driving mechanism (200) is used for driving the dustproof exhaust box (130) to move so as to drive the dustproof exhaust box (130) to switch between a first position state and a second position state.

2. The heat dissipation dustproof computer mainframe case according to claim 1, wherein the case body (100) is provided with an air inlet communicated with the air inlet cavity (120), an air inlet box (140) is detachably arranged in the air inlet, the inner side of the air inlet box (140) is open, and a plurality of air inlet holes (141) communicated with the air inlet cavity (120) are distributed on the outer side of the air inlet box (140).

3. The heat dissipation and dust prevention computer mainframe box according to claim 1, wherein a plurality of filter screens (121) are installed in the induced air cavity (120) near the air inlet box (140).

4. A heat dissipation dustproof computer mainframe case according to claim 3, characterized in that a fixed ring plate (122) is fixedly installed in the induced air cavity (120) at a position close to the induced air port, a movable ring plate (123) is arranged on one side of the fixed ring plate (122) close to the induced air port, the movable ring plate (123) is connected with the fixed ring plate (122) through a plurality of elastic pieces (124), the inner side end of the air inlet box (140) is abutted against the movable ring plate (123), and a plurality of pressing plates (150) abutted against the outer side end of the air inlet box (140) are rotatably connected at a position close to the induced air port outside the box body (100).

5. The dustproof computer mainframe box according to claim 4, wherein a permanent magnet is arranged on one side of the movable ring plate (123) close to the air inlet box (140), and a metal sheet (142) which is attracted with the permanent magnet is arranged at the inner side end of the air inlet box (140).

6. The heat dissipation and dust prevention computer mainframe box according to any one of claims 1 to 5, wherein an upper partition plate (160) and a lower partition plate (170) which are arranged up and down are installed in the box body (100), and the upper partition plate (160) and the lower partition plate (170) divide the interior of the box body (100) into an exhaust cavity (180), a mounting cavity (110) and an induced air cavity (120) which are arranged up and down in sequence; the upper partition plate (160) is provided with a communication port (161) which is communicated with the exhaust cavity (180) and the installation cavity (110), the inner wall of the installation cavity (110) is fixedly provided with an isolation box (190), the top end of the isolation box (190) is communicated with the exhaust cavity (180), the installation port is communicated with the isolation box (190), and when the dustproof exhaust box (130) is in a first position state, the dustproof exhaust box (130) is positioned in the isolation box (190); a plurality of ventilation pipes (171) which are communicated with the induced draft cavity (120) and the installation cavity (110) are arranged on the lower partition plate (170) in a penetrating mode.

7. The heat dissipation and dust prevention computer mainframe box according to claim 6, wherein the driving mechanism (200) comprises a rotating shaft (210) and a gear (220), the rotating shaft (210) is vertically arranged in the installation cavity (110), the top end of the rotating shaft (210) sequentially penetrates through the upper partition plate (160) and the box body (100) to extend out of the box body (100), the rotating shaft (210) is in rotating fit connection with the upper partition plate (160) and the box body (100), and the top end of the rotating shaft (210) is connected with a knob (230); the gear (220) is fixed at the bottom end of the rotating shaft (210); the dustproof exhaust box (130) is connected with a connecting rod (240) which is horizontally arranged, the connecting rod (240) penetrates through the isolation box (190) and is in sliding sealing fit with the isolation box (190), and the connecting rod (240) is provided with a tooth part (241) meshed with the gear (220).

8. The heat dissipation and dust prevention type computer mainframe box according to claim 6, wherein the opposite side walls of the box body (100) are provided with mounting openings respectively, the two mounting openings are arranged oppositely, the two mounting openings are provided with dust prevention exhaust boxes (130) in a sliding manner, and the driving mechanism (200) is used for driving the two dust prevention exhaust boxes (130) to move; the isolation boxes (190) are fixed on the two opposite inner walls of the installation cavity (110) and the top ends of the two isolation boxes (190) are communicated with the exhaust cavity (180), the two installation openings are respectively communicated with the two isolation boxes (190), and when the two dustproof exhaust boxes (130) are in a first position state, the two dustproof exhaust boxes (130) are respectively located in the two isolation boxes (190).

9. The heat-dissipating, dust-protected computer chassis of claim 6, further comprising a cooling mechanism (300), wherein the cooling mechanism (300) is configured to cool air introduced by the air intake chamber (120).

10. The heat dissipation dustproof computer mainframe box according to claim 9, wherein the cooling mechanism (300) comprises a cooling liquid tank (310) filled with cooling liquid, the cooling liquid tank (310) is fixed on the lower partition board (170), a conveying pump (320) is arranged in the cooling liquid tank (310), a liquid inlet cavity (172) filled with the cooling liquid and a liquid outlet cavity (173) are arranged in the lower partition board (170), the liquid inlet cavity (172) is connected with the conveying pump (320) through a liquid inlet pipe (174), the liquid outlet cavity (173) is communicated with the cooling liquid tank (310) through a liquid outlet pipe (175), and one ends of the liquid inlet cavity (172) and the liquid outlet cavity (173) far away from the cooling liquid tank (310) are mutually communicated; the ventilation pipe (171) penetrates through the liquid inlet cavity (172) and the liquid outlet cavity (173).

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