Vacuum liquid injection mechanism, quantitative liquid injection mechanism and liquid injection device for vapor chamber and heat pipe

Abstract

The utility model provides a vacuum liquid injection mechanism, a quantitative liquid injection mechanism and a liquid injection device for a vapor chamber and a heat pipe, which comprise a valve body which is respectively provided with a liquid inlet hole, an exhaust hole and a liquid injection hole, a liquid injection pipeline communicated with the liquid inlet hole and the liquid injection hole and an exhaust pipeline communicated with the exhaust hole and the liquid injection hole are further arranged in the valve body. The liquid injection pipeline is provided with a first control assembly for controlling the on-off of the liquid injection pipeline, and the exhaust pipeline is provided with a second control assembly for controlling the on-off of the exhaust pipeline; the valve body is in linkage fit with the first control assembly and the second control assembly, so that the heat pipe of the vapor chamber can be independently communicated with the vacuum generator or the working solution, and the heat pipe can simultaneously achieve the machining effects of air extraction vacuum and rapid liquid injection in the same liquid injection hole; and through cooperative use of the driving mechanism, the third driving piece, the rotating rod and the liquid suction valve, the liquid injection amount in the heat pipe is accurately controlled, so that the liquid injection efficiency and the liquid injection effect are effectively improved, and the liquid injection cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of the heat plate processing, concretely relates to a vacuum liquid injection mechanism for heat plate and heat pipe and quantitative liquid injection mechanism and liquid injection device. BACKGROUND

[0002] The heat plate is a kind of high-efficiency heat conduction device, and its working principle is based on phase-change heat transfer mechanism, when heat is conducted from external high-temperature zone to the evaporation zone of heat plate, the working liquid in the capillary heat pipe close to heat source can rapidly absorb heat and vaporize into steam, this process absorbs a large amount of heat energy, and the volume of working liquid rapidly expands, and the vaporized steam rapidly diffuses to low-pressure zone under the action of pressure difference, carries a large amount of heat energy in the diffusion process, so as to realize the rapid transfer of heat;In the prior art, when it is needed to inject working liquid into heat plate and heat pipe, at least three different mechanisms are needed to forcibly inject liquid, vacuumize and heat the heat pipe respectively, so that the liquid injection of heat pipe in the prior art is not only complex, but also needs multiple mechanisms to coordinate, so that the liquid injection is difficult and the liquid injection cost is high. CONTENT OF UTILITY MODEL

[0003] (1) technical problem to be solved

[0004] The utility model provides a vacuum liquid injection mechanism for heat plate and heat pipe and quantitative liquid injection mechanism and liquid injection device, aims at solving the problems of complex heat pipe liquid injection of heat plate in prior art, large engineering quantity and high liquid injection cost.

[0005] (2) technical scheme

[0006] The utility model provides a vacuum liquid injection mechanism for heat plate and heat pipe, including valve body, be equipped with liquid inlet hole, exhaust hole and liquid injection hole respectively on the valve body, be equipped with liquid injection pipeline and exhaust pipeline respectively with liquid inlet hole and liquid injection hole intercommunication in the valve body, with exhaust hole and liquid injection hole intercommunication respectively;Wherein, be equipped with the first control assembly of control its on-off on liquid injection pipeline, be equipped with the second control assembly of control its on-off on exhaust pipeline, through the first control assembly and the second control assembly control respectively liquid inlet hole and liquid injection hole on-off, and exhaust hole and liquid injection hole on-off.

[0007] Further, the first control assembly includes a housing one and a sliding block one, the cavity one is provided in the housing one, and the sliding block one is slidingly connected in the cavity one;The liquid injection pipeline includes liquid injection channel one and liquid injection channel two, one end of the liquid injection channel one is communicated with the liquid injection hole, and the other end is communicated with the cavity one;One end of the liquid injection channel two is communicated with the liquid inlet hole, and the other end is communicated with the cavity one.

[0008] Further, the second control assembly comprises a shell two and a sliding block two, the shell two is internally provided with a cavity two, and the sliding block two is slidingly connected in the cavity two; the exhaust pipeline comprises an exhaust channel one and an exhaust channel two, one end of the exhaust channel one is communicated with the exhaust hole, and the other end is communicated with the cavity two; one end of the exhaust channel two is communicated with the liquid injection hole, and the other end is communicated with the cavity two.

[0009] Further, the first control assembly further comprises a driving member one, the output end of the driving member one is fixedly connected with the sliding block one through the shell one, so as to drive the movement of the sliding block one; the second control assembly further comprises a driving member two, the output end of the driving member two is fixedly connected with the sliding block two through the shell two, so as to drive the movement of the sliding block two.

[0010] The utility model also provides a kind of quantitative liquid injection mechanism, including the vacuum liquid injection mechanism and liquid suction valve, the liquid suction valve is equipped with liquid suction pipeline being communicated with the liquid inlet, and liquid suction port being communicated with the liquid suction pipeline, the liquid suction pipeline is also equipped with rotating rod for controlling the on-off of the liquid suction port and the liquid suction pipeline.

[0011] Further, the side peripheral wall of the rotating rod is provided with a liquid suction groove, when the liquid suction groove is communicated with the liquid suction port by rotating the rotating rod, at least a part of the liquid suction groove is communicated with the liquid suction pipeline, to realize the communication between the liquid suction port and the liquid suction pipeline; when the liquid suction groove is not communicated with the liquid suction port by rotating the rotating rod, the liquid suction port is disconnected with the liquid suction pipeline.

[0012] Further, one side of the liquid suction valve and located in the extension direction of the liquid suction pipeline is provided with a driving member three, one end of the rotating rod is fixedly connected with the output end of the driving member three through the liquid suction valve, and the driving member three is used to control the rotation of the rotating rod; the driving member three is a motor or a pneumatic cylinder.

[0013] The utility model also provides a kind of liquid injection device, including the quantitative liquid injection mechanism and driving mechanism, and the driving mechanism drives the driving member three and the rotating rod to move along the length direction of the liquid suction pipeline.

[0014] Further, the driving mechanism comprises a fixed plate, a sliding rail arranged on the fixed plate, a sliding block fixedly connected with the sliding rail, a driving member four arranged on the fixed plate and a connecting rod, one end of the connecting rod is connected with the driving member four, the other end is connected with the sliding block, and the driving member three is fixedly arranged on the sliding block.

[0015] Further, the driving member four is a motor or a pneumatic cylinder.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] Through the linkage cooperation of the valve body and the first control assembly and the second control assembly, the heat pipe in the heat plate can be communicated with the vacuum generator or the working liquid respectively, so that the heat pipe can realize the processing effect of vacuumizing and quickly injecting liquid in the same liquid injection hole; meanwhile, through the cooperation of the driving mechanism, the driving piece three, the rotating rod and the liquid suction valve, the liquid injection amount in the heat pipe of the heat plate is accurately controlled, so that the liquid injection efficiency, the liquid injection effect and the liquid injection cost are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The whole structure of the utility model is shown Figure 1 .

[0019] Figure 2 The whole structure of the utility model is shown Figure 2 .

[0020] Figure 3 The whole explosion drawing of the utility model is shown.

[0021] Figure 4 The valve body explosion of the utility model is shown Figure 1 .

[0022] Figure 5 The valve body section of the utility model is shown Figure 1 .

[0023] Figure 6 The valve body explosion of the utility model is shown Figure 2 .

[0024] Figure 7 The valve body section of the utility model is shown Figure 2 .

[0025] Figure 8 The liquid injection pipeline and the exhaust pipeline of the utility model are shown Figure 1 .

[0026] Figure 9 The liquid injection pipeline and the exhaust pipeline of the utility model are shown Figure 2 .

[0027] Figure 10 The exhaust pipeline of the utility model is shown.

[0028] Figure 11 The liquid injection pipeline of the utility model is shown.

[0029] Figure 12 The liquid suction valve and the rotating rod structure of the utility model are shown.

[0030] Figure 13 The rotating rod rotating schematic view of the utility model.

[0031] Figure 14 The liquid injection process schematic of the utility model Figure 1 .

[0032] Figure 15 The liquid injection process schematic of the utility model Figure 2 .

[0033] Fig. 1- valve body, 11- liquid inlet hole, 12- exhaust hole, 13- liquid injection hole, 14- liquid injection pipeline, 141- liquid injection channel one, 142- liquid injection channel two, 15- exhaust pipeline, 151- exhaust channel one, 152- exhaust channel two, 2- first control assembly, 21- shell one, 211- cavity one, 22- slider one, 23- drive piece one, 3- second control assembly, 31- shell two, 311- cavity two, 32- slider two, 33- drive piece two, 4- liquid suction valve, 41- liquid suction pipeline, 42- liquid suction port, 43- rotating rod, 431- liquid suction groove, 44- drive piece three, 5- drive mechanism, 51- fixed plate, 52- sliding rail, 53- sliding block, 54- drive piece four, 55- connecting rod, 6- shell. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0035] As Figures 1-11 shown, the utility model provides a kind of vacuum liquid injection mechanism for equalizing heat plate and heat pipe, including valve body 1, the valve body 1 is equipped with liquid inlet hole 11, exhaust hole 12 and liquid injection hole 13 respectively, the valve body 1 is also equipped with liquid injection pipeline 14 and exhaust pipeline 15 respectively with the liquid inlet hole 11 and the liquid injection hole 13 communication, and with the exhaust hole 12 and the liquid injection hole 13 communication respectively;Wherein, the liquid injection pipeline 14 is equipped with the first control assembly 2 of controlling its on-off, the second control assembly 3 of controlling its on-off is equipped on the exhaust pipeline 15, the on-off of the liquid inlet hole 11 and the liquid injection hole 13 and the on-off of the exhaust hole 12 and the liquid injection hole 13 are controlled respectively by the first control assembly 2 and the second control assembly 3;

[0036] When using, first, as Figure 9 shown, the first control assembly 2 and the second control assembly 3 are controlled respectively, so that the liquid injection pipeline 14 and exhaust pipeline 15 all keep blocking state, at this time, the liquid injection hole 13 cannot be communicated with the liquid inlet hole 11 and exhaust hole 12;

[0037] In the second step, the exhaust hole 12 is connected to a vacuum generator (not shown), and the injection hole 13 is connected to a heat pipe (not shown) in the vapor chamber to be injected with liquid. One end of the heat pipe is sealed, and the other end is connected to the injection hole 13. The liquid inlet hole 11 is connected to the working fluid.

[0038] The third step, such as Figure 10 As shown, the second control component 3 is controlled to connect the exhaust pipe 15 and turn on the vacuum generator. At this time, the vacuum generator sequentially evacuates the heat pipe through the exhaust hole 12, the exhaust pipe 15 and the injection hole 13, so that a vacuum state is formed inside the heat pipe;

[0039] The fourth step is as follows Figure 11 As shown, the second control component 3 is controlled to block the exhaust pipe 15, so that the heat pipe maintains a vacuum state, and then the first control component 2 is controlled to connect the liquid injection pipe 14, so that the heat pipe can be connected to the working fluid through the liquid injection hole 13, the liquid injection pipe 14, and the liquid inlet hole 11. Under the vacuum effect of the heat pipe, the working fluid will be sucked into the heat pipe to form a liquid injection effect and complete the liquid injection;

[0040] After the liquid injection is completed, the first step is performed again while keeping the liquid injection pipe 14 and the exhaust pipe 15 blocked. This can simultaneously limit the vacuum pumping operation of the vacuum generator on the heat pipe and the liquid injection operation of the working liquid being sucked into the heat pipe. At this time, the heat pipe that has completed liquid injection can be replaced with the next heat pipe to be injected, and the subsequent steps are performed again to achieve batch liquid injection of heat pipes. It should be noted that under the same effect, the first and second steps can be performed in the same order.

[0041] It should be noted that the working fluid in the heat pipe filling process of the vapor chamber is generally pure water (deionized water) or refrigerant. Pure water and refrigerant have high thermal conductivity at low temperatures and can evaporate and condense quickly in a vacuum environment, thereby providing efficient heat dissipation.

[0042] In the prior art heat spreader heat pipe filling process, the heat pipe needs to be forced to be filled with liquid, vacuumed and heated in sequence through multiple different mechanisms, which makes the heat pipe filling process more complicated and requires more connected mechanisms. Not only does it increase the filling cost, but the heat pipe also needs to switch back and forth between multiple mechanisms, which easily leads to poor filling effect. In order to solve this technical problem, the utility model makes the above-mentioned improvements to the filling process and the vacuuming process. Compared with the prior art, the utility model is connected to the vacuum generator, the heat pipe and the working fluid respectively through the valve body 1, and controls the exhaust pipe 15 and the filling pipe 14 in the valve body 1 through the first control component 2 and the second control component 3, so that the vacuuming and filling operations of the heat pipe can be realized simultaneously in one mechanism. The vacuum filling mechanism is not only simple in structure and cleverly designed, but also can greatly improve the filling efficiency, filling effect and filling cost, and has a positive promoting effect on the batch processing technology of heat spreader and heat pipe filling.

[0043] Specifically, such as Figures 8-11 As shown, the first control component 2 includes a shell 21 and a slider 22. The shell 21 is fixed to one side of the valve body 1. A cavity 211 is provided in the shell 21. The open end of the cavity 211 is connected to the side wall of the valve body 1. The slider 22 is slidably connected to the cavity 211, thereby achieving the contact or separation between the slider 22 and the side wall of the valve body 1; the injection pipe 14 includes an injection channel 141 and an injection channel 2 142. One end of the injection channel 141 is connected to the injection hole 13, and the other end is connected to the injection hole 13. The first liquid injection channel 141 is connected to the first liquid injection channel 142 by passing through the side wall of the valve body 1; one end of the second liquid injection channel 142 is connected to the liquid inlet hole 11, and the other end passes through the side wall of the valve body 1 and is connected to the first liquid injection channel 141; that is, the first liquid injection channel 211 is connected to the first liquid injection channel 141 and the second liquid injection channel 142 respectively, and the slider 1 22 can abut or move away from the connection between the first liquid injection channel 211 and the first liquid injection channel 141 and the second liquid injection channel 142 to achieve the blocking or connection of the first liquid injection channel 141 and the second liquid injection channel 142.

[0044] Furthermore, in order to better control the movement of the slider 22, the first control assembly 2 further includes a driving member 23. The output end of the driving member 23 passes through the housing 21 and is fixedly connected to the slider 22, or the slider 22 passes through the housing 21 and is fixedly connected to the output end of the driving member 23 to drive the movement of the slider 22. The driving member 23 is preferably a cylinder. The provision of the driving member 23 makes the sliding of the slider 22 more convenient and effectively ensures the abutment force of the slider 22 on the connection, so that the injection pipe 14 achieves a better blocking effect.

[0045] Further, the second control assembly 3 comprises a shell two 31 and a slider two 32 arranged on the outer wall of the valve body 1, the shell two 31 is internally provided with a cavity two 311, and the slider two 32 is slidingly connected in the cavity two 311; the exhaust pipe 15 comprises an exhaust passage one 151 and an exhaust passage two 152, one end of the exhaust passage one 151 is communicated with the exhaust hole 12, and the other end is communicated with the cavity two 311; one end of the exhaust passage two 152 is communicated with the liquid injection hole 13, and the other end is communicated with the cavity two 311; the second control assembly 3 further comprises a driving member two 33, the output end of the driving member two 33 penetrates the shell two 31 and is fixedly connected with the slider two 32, so as to drive the movement of the slider two 32, and the driving member two 33 is also preferably a cylinder, that is, the second control assembly 3 has the same structure as the first control assembly 2.

[0046] As shown in Figures 12-13 The utility model further provides a kind of quantitative liquid injection mechanism, including vacuum liquid injection mechanism and liquid suction valve 4 described above in the preceding, the liquid suction valve 4 is arranged at the liquid inlet hole 11 of the valve body 1, and the liquid suction valve 4 is provided with liquid suction pipeline 41 that is communicated with the liquid inlet hole 11 closely, and liquid suction port 42 that is communicated with the liquid suction pipeline 41, the working liquid is connected with the liquid suction port 42, and the liquid suction pipeline 41 is further provided with rotating rod 43 that controls the on-off of the liquid suction port 42 and the liquid suction pipeline 41;

[0047] Specifically, one side peripheral wall of the rotating rod 43 is provided with inwardly recessed liquid suction groove 431, when the liquid suction groove 431 is communicated with the liquid suction port 42 by rotating the rotating rod 43, at least part of the liquid suction groove 431 is communicated with the liquid suction pipeline 41, to realize the communication of the liquid suction port 42 and the liquid suction pipeline 41; when the liquid suction groove 431 is not communicated with the liquid suction port 42 by rotating the rotating rod 43, the peripheral wall of the rotating rod 43 blocks the liquid suction port 42, so that the liquid suction port 42 cannot be communicated with the liquid suction pipeline 41, so as to achieve the purpose of blocking liquid inlet;

[0048] Before the liquid injection operation of the above-mentioned fourth step, the liquid suction port 42 is communicated with the liquid suction pipeline 41 by rotating the rotating rod 43, the working liquid enters into the liquid injection passage two 142 through the liquid suction port 42 and liquid suction pipeline 41 in sequence, the liquid amount of the working liquid entering into the liquid injection passage two 142 or the liquid suction pipeline 41 is controlled by calculating the communication time of the liquid suction port 42 and the liquid suction pipeline 41 or setting sensor and other methods, and then the liquid suction port 42 is blocked with the liquid suction pipeline 41 by rotating the rotating rod 43, so as to achieve the purpose of quantitative liquid injection;

[0049] Furthermore, in order to better control the rotation of the rotating rod 43, a third driving member 44 is provided on one side of the liquid suction valve 4 and in the longitudinal direction of the liquid suction pipe 41. One end of the rotating rod 43 passes through the liquid suction valve 4 and is fixedly connected to the output end of the third driving member 44. The third driving member 44 is used to control the rotation of the rotating rod 43.

[0050] Preferably, the driving member 3 44 is preferably a rotary cylinder or a motor;

[0051] By controlling the forward and reverse rotation of the output shaft of the driving member 3 44, the rotation of the rotating rod 43 is controlled, and then the connection and disconnection of the suction port 42 and the suction pipe 41 are controlled; the coordinated design of the suction valve 4 and the rotating rod 43 is not only simple in structure but also highly practical, and can effectively improve the quantitative injection effect of the quantitative injection mechanism, make the injection amount more accurate, and thus reduce processing costs.

[0052] It should be noted that, during the actual liquid injection process, relying solely on the vacuum negative pressure in the heat pipe to suck in the working liquid may result in the working liquid in the heat pipe being undersaturated, and some of the working liquid that has not been injected into the heat pipe may still remain in the liquid suction pipe 41 or the liquid injection pipe 14.

[0053] In order to solve this technical problem, Figures 2-3 As shown, the present invention also provides a liquid injection device, including the quantitative liquid injection mechanism, a driving mechanism 5 and a shell 6, the driving mechanism 5 is used to drive the driving member 3 44 and the rotating rod 43 to move simultaneously along the length direction of the liquid suction pipe 41, so that during liquid injection, the working fluid in the liquid suction pipe 41 and the liquid injection pipe 14 can simultaneously be effectively pressed into the heat pipe in a quantitative and efficient manner under the suction effect of the negative pressure and the thrust of the driving mechanism 5 on the rotating rod 43, thereby further effectively improving the liquid injection effect of the heat pipe; the shell 6 is sleeved on the outer peripheral wall of the valve body 1 and the liquid suction valve 4, so that the valve body 1 and the liquid suction valve 4 are fixed into an integrated structure, which is convenient for the overall installation of the heat pipe liquid injection device to more equipment for more linked heat sink processing.

[0054] Specifically, the driving mechanism 5 includes a fixed plate 51, a slide rail 52 provided on the fixed plate 51, a sliding block 53 fixedly connected to the slide rail 52, a driving member 54 provided on the fixed plate 51, and a connecting rod 55. One end of the connecting rod 55 is connected to the driving member 54, and the other end is connected to the sliding block 53. The driving member 54 is fixed to the sliding block 53.

[0055] Preferably, the driving member 54 is a motor, and the connecting rod 55 is a screw structure and is threadedly connected to the sliding block 53;

[0056] When using, Figures 14-15 As shown, the driving member 44 rotates and drives the connecting rod 55 to rotate. Under the screw connection between the connecting rod 55 and the sliding block 53, the sliding block 53 drives the driving member 3 44 and the rotating rod 43 to rise and fall synchronously, thereby achieving extrusion, pressurized injection and back-drawing of liquid during the injection process;

[0057] It should be noted that, in actual applications, the driving member four 54 can also be a cylinder. When the driving member four 54 is a cylinder, the output shaft is fixedly connected to the sliding block 53. The sliding and lifting of the sliding block 53 can be achieved by controlling the extension and retraction of its output shaft. That is to say, under the same driving effect, the driving member three 44 and the driving member four can be cylinders or motors.

[0058] The following is a detailed description of the working principle of the utility model;

[0059] Before use, the injection pipe 14 and the exhaust pipe 15 are blocked by the first control component 2 and the second control component 3, and then the vacuum generator, the heat pipe to be injected in the vapor chamber, and the working fluid are connected at the exhaust hole 12, the injection hole 13, and the suction port 42 respectively;

[0060] Next, the second control component 3 is controlled to connect the exhaust pipe 15, so that the exhaust hole 12 is connected to the heat pipe through the exhaust pipe 15, and then the heat pipe is evacuated by the vacuum generator to form a vacuum state; during the evacuation process or before the evacuation, the rotating rod 43 is moved up to a specified height and rotated horizontally by a certain angle by the driving member 454 and the driving member 3 44, so that the liquid suction port 42 can be connected to the liquid suction pipe 41 through the liquid suction groove 431, thereby guiding the working fluid into the liquid suction pipe 41 and the second liquid injection channel 142, and at the same time, the amount of the working fluid flowing in is limited according to the upward movement distance of the rotating rod 43 to ensure a specific liquid injection amount; after the liquid suction is completed, the rotating rod 43 is rotated by the driving member 3 44 to block the liquid suction port 42 from the liquid suction pipe 41;

[0061] Furthermore, after the air extraction is completed, the second control component 3 is controlled to block the exhaust pipe 15, and the first control component 2 is controlled to connect the liquid injection pipe 14. The working fluid in the liquid suction pipe 41 and the liquid injection pipe 14 effectively, accurately and quickly enters the heat pipe under the vacuum suction of the heat pipe and the pushing and squeezing force of the driving member 44, thereby completing the liquid injection.

[0062] Finally, repeat the above steps to carry out batch liquid injection processing of heat pipes.

[0063] The utility model discloses an innovation point lies in through the linkage cooperation of valve body and first control assembly and second control assembly, make the heat pipe can be communicated with vacuum generator or working liquid alone respectively, to make the heat pipe in the heat conduction plate can realize the processing effect of the vacuumization and fast liquid injection simultaneously in the same liquid injection hole, simultaneously, through the cooperation of driving mechanism, driving piece three, rotary rod and liquid suction valve, the injection amount in the heat pipe is accurately controlled, thereby reaches the effective improvement liquid injection efficiency, liquid injection effect and the reduction liquid injection cost.

[0064] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, the description of the specification is only for the sake of clarity, the skilled person should consider the specification as a whole, the technical solutions in each embodiment can also be combined appropriately to form other implementations that the skilled person can understand.

[0065] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A vacuum liquid injection mechanism for a vapor chamber and a heat pipe, characterized by, The valve body (1) is provided with a liquid inlet hole (11), an exhaust hole (12) and a liquid injection hole (13) respectively, and is further provided with a liquid injection pipeline (14) communicated with the liquid inlet hole (11) and the liquid injection hole (13) respectively, and an exhaust pipeline (15) communicated with the exhaust hole (12) and the liquid injection hole (13) respectively; The liquid injection pipeline (14) is provided with a first control assembly (2) for controlling the opening and closing thereof, the exhaust pipeline (15) is provided with a second control assembly (3) for controlling the opening and closing thereof, and the opening and closing of the liquid inlet hole (11) and the liquid injection hole (13) and the opening and closing of the exhaust hole (12) and the liquid injection hole (13) are controlled by the first control assembly (2) and the second control assembly (3) respectively.

2. The vacuum liquid injection mechanism for a vapor chamber and a heat pipe according to claim 1, wherein The first control assembly (2) comprises a shell one (21) and a slider one (22), the shell one (21) is provided with a cavity one (211) therein, and the slider one (22) is slidingly connected in the cavity one (211); the liquid injection pipeline (14) comprises a liquid injection channel one (141) and a liquid injection channel two (142), one end of the liquid injection channel one (141) is communicated with the liquid injection hole (13), and the other end is communicated with the cavity one (211); one end of the liquid injection channel two (142) is communicated with the liquid inlet hole (11), and the other end is communicated with the cavity one (211).

3. The vacuum liquid injection mechanism for a vapor chamber and a heat pipe according to claim 2, wherein The second control assembly (3) comprises a shell two (31) and a slider two (32), the shell two (31) is provided with a cavity two (311) therein, and the slider two (32) is slidingly connected in the cavity two (311); the exhaust pipeline (15) comprises an exhaust channel one (151) and an exhaust channel two (152), one end of the exhaust channel one (151) is communicated with the exhaust hole (12), and the other end is communicated with the cavity two (311); one end of the exhaust channel two (152) is communicated with the liquid injection hole (13), and the other end is communicated with the cavity two (311).

4. The vacuum liquid injection mechanism for a vapor chamber and a heat pipe according to claim 3, wherein The first control assembly (2) further comprises a driving member one (23), the output end of the driving member one (23) penetrates the shell one (21) and is fixedly connected with the slider one (22) to drive the movement of the slider one (22); the second control assembly (3) further comprises a driving member two (33), the output end of the driving member two (33) penetrates the shell two (31) and is fixedly connected with the slider two (32) to drive the movement of the slider two (32).

5. A liquid dispensing mechanism comprising: The vacuum liquid injection mechanism and the liquid suction valve (4) are provided with a liquid suction pipeline (41) communicated with the liquid inlet hole (11), and a liquid suction opening (42) communicated with the liquid suction pipeline (41), and the liquid suction pipeline (41) is further provided with a rotating rod (43) for controlling the opening and closing of the liquid suction opening (42) and the liquid suction pipeline (41).

6. The liquid dosing mechanism of claim 5, wherein One side of the rotating rod (43) is provided with a liquid suction groove (431), when the rotating rod (43) is rotated to make the liquid suction groove (431) communicate with the liquid suction port (42), at least a part of the liquid suction groove (431) communicates with the liquid suction pipeline (41), realizing the communication between the liquid suction port (42) and the liquid suction pipeline (41); when the rotating rod (43) is rotated to make the liquid suction groove (431) not communicate with the liquid suction port (42), the liquid suction port (42) is disconnected with the liquid suction pipeline (41).

7. The liquid dosing mechanism of claim 6, wherein One side of the liquid suction valve (4) and in the extension direction of the liquid suction pipeline (41) is provided with a driving member three (44), one end of the rotating rod (43) penetrates the liquid suction valve (4) and is fixedly connected with the output end of the driving member three (44), the driving member three (44) is used for controlling the rotation of the rotating rod (43), and the driving member three (44) is a motor or a cylinder.

8. A liquid injection device characterized by comprising: The quantitative liquid injection mechanism comprises the quantitative liquid injection mechanism and a driving mechanism (5), and the driving mechanism (5) drives the driving member three (44) and the rotating rod (43) to move along the length direction of the liquid suction pipeline (41).

9. The liquid injection device of claim 8, wherein The driving mechanism (5) comprises a fixed plate (51), a sliding rail (52) arranged on the fixed plate (51), a sliding block (53) fixedly connected with the sliding rail (52), a driving member four (54) arranged on the fixed plate (51) and a connecting rod (55), one end of the connecting rod (55) is connected with the driving member four (54), the other end is connected with the sliding block (53), and the driving member three (44) is fixedly arranged on the sliding block (53).

10. The liquid injection device of claim 9, wherein The driving member four (54) is a motor or a cylinder.

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