CN220583165U - Heat pipe vacuumizing system - Google Patents

Abstract

The application relates to a heat pipe vacuum system, heat pipe vacuum system includes liquid supply device, evacuating device, heat pipe heat exchanger and multiport valve group, and liquid supply device, evacuating device and heat pipe heat exchanger can communicate each other through multiport valve group. The multi-way valve group can respectively control the opening and closing of a liquid supply port of the liquid supply device, the opening and closing of a suction port of the vacuumizing device and the opening and closing of a filling port of the heat pipe exchanger. The multi-way valve group is provided with an exhaust valve port communicated with the external space, and noncondensable gas can be discharged out of the heat pipe vacuumizing system through the exhaust valve port. The vacuum pumping device can expand the internal space of the vacuum pumping device so that the working medium in the heat pipe heat exchanger can enter the vacuum pumping device, and the vacuum pumping device can compress the internal space of the vacuum pumping device so that the working medium in the vacuum pumping device can flow back to the liquid supply device. The heat pipe vacuumizing system solves the problems that working medium is easy to lose due to heat pipe vacuumizing and vacuumizing efficiency is low.

Description

Heat pipe vacuumizing system

Technical Field

The application relates to the technical field of heat pipe vacuumizing devices, in particular to a heat pipe vacuumizing system.

Background

In general, the heat pipe needs to be vacuumized, and in the prior art, a vacuuming mode includes a heat exhausting method and a vacuum pump exhausting method. The heat-discharging method has higher requirements on the proficiency of operators, so that the vacuum degree of the heat pipe produced by the heat-discharging method is greatly influenced by human factors. In addition, the heat discharging method causes the working medium to have certain loss, especially the environment-friendly refrigerant with high price, and the loss of the working medium can directly influence the cost and market competitiveness of the related products of the heat pipe. Although the vacuum pump exhaust method can obtain high vacuum degree, the vacuum pump exhaust time is long, which is unfavorable for the mass production of the heat pipe.

Disclosure of Invention

Based on this, it is necessary to provide a heat pipe vacuumizing system to solve the problems that the existing heat pipe vacuumizing is easy to cause loss of working medium and has low vacuumizing efficiency.

The heat pipe vacuumizing system comprises a liquid supply device, a vacuumizing device, a heat pipe heat exchanger and a multi-way valve group, wherein the liquid supply device, the vacuumizing device and the heat pipe heat exchanger can be communicated with one another through the multi-way valve group; the multi-way valve group can respectively control the opening and closing of a liquid supply port of the liquid supply device, the opening and closing of a suction port of the vacuumizing device and the opening and closing of a filling port of the heat pipe exchanger; the multi-way valve group is provided with an exhaust valve port communicated with the external space so that non-condensable gas can be discharged out of the heat pipe vacuumizing system through the exhaust valve port. The vacuum pumping device can expand the internal space of the vacuum pumping device so that the working medium in the heat pipe heat exchanger can enter the vacuum pumping device, and the vacuum pumping device can compress the internal space of the vacuum pumping device so that the working medium in the vacuum pumping device can flow back to the liquid supply device.

In one embodiment, the multi-way valve group comprises a first valve body, a second valve body and a third valve body, wherein the first valve body is connected to a suction port of the vacuumizing device, the second valve body is connected to a liquid supply port of the liquid supply device, the third valve body is connected to a filling port of the heat pipe heat exchanger, the liquid supply device can be communicated with the vacuumizing device through the second valve body and the first valve body in sequence, the liquid supply device can be communicated with the heat pipe heat exchanger through the second valve body and the third valve body in sequence, and the vacuumizing device can be communicated with the heat pipe heat exchanger through the first valve body and the third valve body in sequence.

In one embodiment, the vacuum pumping device comprises a shell, a piston and a driving element, wherein the shell is provided with an inner cavity, the piston is movably arranged in the inner cavity and separates the inner cavity into a first cavity and a second cavity which are not communicated, the first cavity is communicated with the suction port, the driving element is arranged at one end of the piston, which is close to the second cavity, and is connected with the piston, and the driving element can drive the piston to move towards a direction, which is close to or far away from the suction port.

In one embodiment, the piston comprises a main body part and a connecting rod part, the shell is provided with a communication hole, the main body part is movably matched with the inner wall of the inner cavity, the connecting rod part is connected to one end, close to the second cavity, of the main body part, one end, far away from the main body part, of the connecting rod part extends out of the second cavity through the communication hole, and the output end of the driving element is connected with the connecting rod part.

In one embodiment, the vacuumizing device further comprises a flange ring and an elastic telescopic tube which are coaxially arranged with the shell respectively, one end of the elastic telescopic tube is fixed on the inner wall of the first cavity in a sealing manner through the flange ring, the other end of the elastic telescopic tube is connected with the piston in a sealing manner, and the piston can drive the elastic telescopic tube to axially stretch and retract along the piston.

In one embodiment, the flexible bellows is a bellows.

In one embodiment, the vacuum pumping device further comprises a first annular elastic membrane and a second annular elastic membrane, one end of the first elastic membrane is fixed on the inner wall of the first cavity in a sealing mode, the other end of the first elastic membrane is connected with one end, close to the first cavity, of the piston in a sealing mode, one end of the second elastic membrane is fixed on the inner wall of the second cavity in a sealing mode, and the other end of the second elastic membrane is connected with one end, close to the second cavity, of the piston in a sealing mode.

In one embodiment, the vacuumizing device further comprises a plurality of first sealing press rings, a second sealing press ring, a third sealing press ring and a fourth sealing press ring, one end of the first elastic membrane is connected to the inner wall of the first cavity in a sealing manner through the first sealing press rings, the other end of the first elastic membrane is connected to the piston in a sealing manner through the second sealing press rings, one end of the second elastic membrane is connected to the piston in a sealing manner through the third sealing press rings, and the other end of the second elastic membrane is connected to the inner wall of the second cavity in a sealing manner through the fourth sealing press rings.

In one embodiment, the housing is further provided with an extraction opening communicating with the second chamber, the extraction opening being adapted to communicate with an external vacuum pump.

In one embodiment, the number of the vacuumizing devices is multiple, the vacuumizing devices are arranged in parallel, the vacuumizing devices are respectively communicated with the liquid supply device through the multi-way valves, and the vacuumizing devices are respectively communicated with the heat pipe heat exchanger through the multi-way valves.

Compared with the prior art, the heat pipe vacuumizing system provided by the application can enable the liquid supply device to fill working media into the vacuumizing device and the heat pipe heat exchanger respectively through the multi-way valve, and all non-condensable gases in the heat pipe vacuumizing system are discharged through the exhaust valve port. Then, the liquid supply port of the liquid supply device is closed by utilizing the multi-way valve group, the internal space of the liquid supply device is enlarged by the vacuumizing device, and working media in the heat pipe heat exchanger enter the vacuumizing device, so that a needed vacuum environment is created in the heat pipe heat exchanger. And finally, closing a filling port of the heat pipe heat exchanger by utilizing the multi-way valve group, opening a liquid supply port of the liquid supply device, and compressing the internal space of the liquid supply device by utilizing the vacuumizing device so that working media in the vacuumizing device can flow back to the liquid supply device.

By the arrangement, working medium loss can not be caused, and compared with a heat discharge method, noncondensable gas is required to be slowly discharged for a long time, the heat pipe vacuumizing system provided by the application can be used for rapidly and efficiently discharging the noncondensable gas and creating a required vacuum environment, so that mass production of heat pipe heat exchangers is facilitated.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings required for the descriptions of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a state diagram of a heat pipe evacuating system according to an embodiment of the present disclosure;

FIG. 2 is a second state diagram of a heat pipe vacuum system according to an embodiment of the present disclosure;

FIG. 3 is a first state diagram of a heat pipe vacuum system according to a first embodiment of the present disclosure;

FIG. 4 is a second state diagram of a heat pipe vacuum system according to the first embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a heat pipe vacuumizing system according to a second embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a heat pipe vacuumizing system according to a third embodiment provided in the present application;

FIG. 7 is a state diagram I of an evacuation device according to an embodiment of the disclosure;

FIG. 8 is a second state diagram of a vacuum apparatus according to an embodiment of the present disclosure;

FIG. 9 is a partially exploded view of an evacuation device according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural view of a flange ring according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural view of a vacuum pumping apparatus according to another embodiment of the present disclosure;

FIG. 12 is a schematic view of a first seal ring according to an embodiment of the disclosure;

FIG. 13 is a schematic view of a second seal ring according to an embodiment of the disclosure;

FIG. 14 is a schematic structural view of a third sealing ring according to an embodiment of the present disclosure;

fig. 15 is a schematic structural diagram of a fourth sealing ring according to an embodiment provided in the present application.

Reference numerals: 100. a liquid supply device; 110. a liquid supply port; 120. a vent hole; 200. a heat pipe heat exchanger; 210. a filler neck; 310. a first valve body; 311. a first valve port; 312. a second valve port; 313. a third valve port; 320. a second valve body; 321. a fourth valve port; 322. a fifth valve port; 323. a sixth valve port; 330. a third valve body; 331. a seventh valve port; 332. an eighth valve port; 333. a ninth valve port; 340. an exhaust valve port; 400. a vacuum pumping device; 410. a suction port; 420. a housing; 421. an inner cavity; 422. a first chamber; 423. a second chamber; 424. a communication hole; 425. a sleeve; 430. a piston; 431. a main body portion; 432. a link portion; 440. a flange ring; 450. an elastic telescopic tube; 460. an extraction opening; 471. a first elastic film; 472. a second elastic film; 481. a first sealing pressure ring; 482. a second sealing pressure ring; 483. a third sealing pressure ring; 484. a fourth sealing pressure ring; 500. a horizontal pipe section; 600. a U-shaped tube section.

Detailed Description

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level greater than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In general, the heat pipe needs to be vacuumized, and in the prior art, a vacuuming mode includes a heat exhausting method and a vacuum pump exhausting method. The heat-discharging method has higher requirements on the proficiency of operators, so that the vacuum degree of the heat pipe produced by the heat-discharging method is greatly influenced by human factors. In addition, the heat discharging method causes the working medium to have certain loss, especially the environment-friendly refrigerant with high price, and the loss of the working medium can directly influence the cost and market competitiveness of the related products of the heat pipe. Although the vacuum pump exhaust method can obtain high vacuum degree, the vacuum pump exhaust time is long, which is unfavorable for the mass production of the heat pipe.

Referring to fig. 1-15, in order to solve the problems that the existing heat pipe vacuuming is easy to cause loss of working medium and has low vacuuming efficiency, the application provides a heat pipe vacuuming system and a heat pipe vacuuming method, the heat pipe vacuuming system comprises a liquid supply device 100, a vacuuming device 400, a heat pipe heat exchanger 200 and a multi-way valve set, wherein the liquid supply device 100, the vacuuming device 400 and the heat pipe heat exchanger 200 can be mutually communicated through the multi-way valve set. And, the multi-way valve group can control the opening and closing of the liquid supply port 110 of the liquid supply device 100, the opening and closing of the suction port 410 of the vacuum pumping device 400, and the opening and closing of the filler port 210 of the heat pipe heat exchanger 200, respectively. The multi-way valve group is provided with an exhaust valve port 340 communicated with the external space so that non-condensable gas can be discharged out of the heat pipe vacuumizing system through the exhaust valve port 340. The vacuum pumping device 400 can expand its own internal space to allow the working fluid in the heat pipe heat exchanger 200 to enter the vacuum pumping device 400, or the vacuum pumping device 400 can compress its own internal space to allow the working fluid in the vacuum pumping device 400 to flow back to the liquid supply device 100.

In this manner, fluid supply apparatus 100 is enabled to fill evacuating apparatus 400 and heat pipe exchanger 200 with working fluid via the multi-way valve, respectively, and to discharge all non-condensable gases within the heat pipe evacuating system via exhaust valve port 340. Then, the liquid supply port 110 of the liquid supply device 100 is closed by the multi-way valve group, the internal space of the liquid supply device 100 is enlarged by the vacuumizing device 400, and the working medium in the heat pipe heat exchanger 200 enters the vacuumizing device 400, so that a required vacuum environment is created in the heat pipe heat exchanger 200. Finally, the filling port 210 of the heat pipe heat exchanger 200 is closed by the multi-way valve group, the liquid supply port 110 of the liquid supply device 100 is opened, and the internal space of the vacuum pumping device 400 is compressed, so that the working medium in the vacuum pumping device 400 can flow back to the liquid supply device 100.

By the arrangement, working medium loss is avoided, and compared with a heat discharge method, noncondensable gas is required to be slowly discharged for a long time, the heat pipe vacuumizing system provided by the application can be used for rapidly and efficiently discharging the noncondensable gas and creating a required vacuum environment, so that mass production of the heat pipe heat exchanger 200 is facilitated.

Specifically, as shown in fig. 1 to 6, the multi-way valve set includes a first valve body 310, a second valve body 320 and a third valve body 330, the first valve body 310 is connected to a suction port 410 of the evacuating device 400, the second valve body 320 is connected to a liquid supply port 110 of the liquid supply device 100, the third valve body 330 is connected to a filling port 210 of the heat pipe heat exchanger 200, and the liquid supply device 100 can communicate with the evacuating device 400 sequentially through the second valve body 320 and the first valve body 310, and the liquid supply device 100 can communicate with the heat pipe heat exchanger 200 sequentially through the second valve body 320 and the third valve body 330, and the evacuating device 400 can communicate with the heat pipe heat exchanger 200 sequentially through the first valve body 310 and the third valve body 330.

More specifically, the heat pipe vacuumizing method comprises the following steps:

as shown in fig. 1, first, the liquid supply device 100 for storing and delivering the liquid working medium is communicated with the vacuum pumping device 400 through the second valve body 320 and the first valve body 310 in sequence, and the liquid supply device 100 is communicated with the heat pipe exchanger 200 through the second valve body 320 and the third valve body 330 in sequence,

then, the filling port 210 of the heat pipe heat exchanger 200 and the suction port 410 of the vacuum pumping device 400 are both arranged vertically upwards, and the exhaust valve port 340 is arranged at one or both of the first valve body 310, the second valve body 320 and the third valve body 330, and the vertical height of the filling port 210 of the heat pipe heat exchanger 200 and the vertical height of the suction port 410 of the vacuum pumping device 400 are both smaller than the vertical height of the exhaust valve port 340; preferably, the vertical height of the supply port 110 of the supply device 100 is also less than the vertical height of the exhaust valve port 340.

Afterwards, the liquid supply device 100 respectively injects working media into the heat pipe heat exchanger 200 and the vacuumizing device 400, and enables the working media to reach a state that the working media can overflow the exhaust valve port 340, so as to exhaust non-condensable gas (mainly air) in the heat pipe heat exchanger 200, the vacuumizing device 400 and the pipeline, and then close the exhaust valve port 340 and the second valve body 320, so that the heat pipe heat exchanger 200 is communicated with the vacuumizing device 400;

as shown in fig. 2, after that, the suction port 410 of the vacuum pumping device 400 is kept vertically upward, the filler port 210 of the heat pipe heat exchanger 200 is vertically downward, and the liquid level of the liquid working medium in the heat pipe heat exchanger 200 is always greater than the vertical height of the suction port 410 of the vacuum pumping device 400 (i.e., even if the liquid level of the liquid working medium in the heat pipe heat exchanger 200 is lowered, the liquid level of the liquid working medium is always greater than the vertical height of the suction port 410), and the connection positions need to be kept sealed, so that non-condensable gases such as air are prevented from entering, and flexible pipes are preferably used, so that the flexible pipes can freely twist when the heat pipe heat exchanger 200 moves and rotates; preferably, the vertical height of the filler neck 210 of the heat pipe heat exchanger 200 is greater than the vertical height of the suction port 410 of the vacuum apparatus 400.

Then, operating the vacuumizing device 400, and expanding the internal space of the vacuumizing device 400 by a preset multiple to enable working media in the heat pipe heat exchanger 200 to sequentially enter the vacuumizing device 400 through the filling port 210 of the heat pipe heat exchanger 200 and the vacuumizing port 410 of the vacuumizing device 400 under the action of gravity;

finally, the operation of the vacuum pumping device 400 is stopped, the third valve body 330 is closed, and the filler neck 210 of the heat pipe exchanger 200 is shut off.

It will be appreciated that in order to improve the tightness of the heat pipe heat exchanger 200, the filler neck 210 of the heat pipe heat exchanger 200 may be further disposed vertically upward during the subsequent operation, and the filler neck 210 of the heat pipe heat exchanger 200 may be welded.

Further, the second valve body 320 may be opened, and the vacuum pumping device 400 may be started again, and the internal space of the vacuum pumping device 400 may be compressed, so that the working medium in the vacuum pumping device 400 may be completely returned to the liquid supply device 100, thereby avoiding the waste of the working medium, and being beneficial to the recycling of the working medium.

It can be appreciated that the heat pipe vacuumizing method has the following very ingenious points. First, before working medium is filled, the filling port 210 of the heat pipe heat exchanger 200 and the suction port 410 of the evacuating device 400 are both set vertically upward, and the vertical height of the filling port 210 of the heat pipe heat exchanger 200 and the vertical height of the suction port 410 of the evacuating device 400 are both smaller than the vertical height of the exhaust valve port 340. In this way, it is possible to ensure that the working medium fills the evacuation device 400, the heat pipe heat exchanger 200, and the pipe throughout, and to discharge all the non-condensable gas through the exhaust valve port 340 after filling the working medium. The first point is ingenious in that the characteristic that the density of the liquid working medium is larger than that of the non-condensable gas and the liquid working medium is not compatible with the non-condensable gas is utilized, the vertical height difference among all components of the heat pipe vacuumizing system (comprising the liquid supply device 100, the vacuumizing device 400, the heat pipe heat exchanger 200 and the multi-way valve group) is arranged, and the non-condensable gas is completely discharged through the injection working medium.

Second, when the vacuum apparatus 400, the heat pipe heat exchanger 200 and the pipeline are filled with the working medium, the suction port 410 of the vacuum apparatus 400 is kept vertically upward, the filling port 210 of the heat pipe heat exchanger 200 is vertically downward, and the liquid level of the liquid working medium in the heat pipe heat exchanger 200 is always greater than the vertical height of the suction port 410 of the vacuum apparatus 400. Thus, when the internal space of the vacuum pumping device 400 is enlarged, because there is no non-condensable gas in the heat pipe vacuum pumping system, and the heat pipe vacuum pumping system is in a vacuum state everywhere, under the action of gravity, the working medium in the heat pipe heat exchanger 200 can enter the vacuum pumping device 400 through the filling port 210 of the heat pipe heat exchanger 200 and the suction port 410 of the vacuum pumping device 400 in sequence, thereby creating a required vacuum environment in the heat pipe heat exchanger 200. The second point is ingenious in that the vertical height differences between the various components of the heat pipe evacuation system are further changed, so that the working medium flows by gravity in the heat pipe evacuation system and creates a vacuum environment required in the heat pipe heat exchanger 200.

From the above, the heat pipe vacuumizing method provided by the application does not cause working medium loss, and compared with the heat discharging method which needs to slowly discharge non-condensable gas for a long time, the heat pipe vacuumizing method provided by the application has the characteristics of high speed and high efficiency, thereby being beneficial to large-scale batch production of the heat pipe heat exchanger 200.

In one embodiment, as shown in fig. 1, a vent 120 is provided at the top of the liquid supply device 100 to facilitate the balance of the internal and external air pressures of the liquid supply device 100 and facilitate the outflow of the working medium from the liquid supply device 100.

In order to improve the liquid supply efficiency of the liquid supply device 100, in an embodiment, as shown in fig. 1-6, the liquid supply port 110 of the liquid supply device 100 is disposed downward, and the vertical height of the liquid supply port 110 of the liquid supply device 100 is greater than the vertical height of the exhaust valve port 340.

In this way, the working medium in the liquid supply device 100 can directly flow into the vacuumizing device 400 and the heat pipe exchanger 200 through the gravity.

However, in another embodiment, the fluid supply apparatus 100 may also be capable of delivering the working fluid through a fluid pump (not shown), and thus, the delivery of the working fluid can be started or stopped in time by controlling the start and stop of the fluid pump.

In one embodiment, as shown in fig. 3 to 6, a horizontal pipe section 500 is provided between the first valve body 310 and the third valve body 330, and a U-shaped pipe section 600 bent downward and communicating with the horizontal pipe section 500 is provided at the horizontal pipe section 500. That is, the first valve body 310 needs to communicate with the third valve body 330 through the horizontal pipe section 500 and the U-shaped pipe section 600.

Thus, even if the vacuum pumping device 400 leaks gas, because the density of the non-condensable gas is less than that of the working medium, the non-condensable gas can only float upwards and is difficult to move downwards against gravity, so that when the non-condensable gas passes through the U-shaped pipe section 600 which is bent downwards, the non-condensable gas can only gather above one end of the U-shaped pipe section 600 close to the first valve body 310, and the non-condensable gas is difficult to pass downwards through the U-shaped pipe section 600 to enter one end of the U-shaped pipe section 600 close to the third valve body 330, that is, the non-condensable gas is difficult to pass through the U-shaped pipe section 600 to enter the heat pipe exchanger 200. Therefore, the difficulty of entering non-condensable gas in the heat pipe heat exchanger 200 is increased, and the success rate of vacuumizing the heat pipe heat exchanger 200 is effectively improved.

When a U-shaped tube segment 600 is provided, there are the following three embodiments regarding the placement of the exhaust valve port 340.

Example 1

As shown in fig. 3 and 4, the exhaust valve port 340 is disposed on the first valve body 310 and the second valve body 320, and the first valve body 310 and the second valve body 320 are three-way valves, the third valve body 330 is a stop valve, and the vertical height of the third valve body 330 is smaller than the vertical height of the exhaust valve port 340.

Specifically, the first valve body 310 includes a first valve port 311, a second valve port 312, and a third valve port 313 that are in communication with each other, and the second valve body 320 includes a fourth valve port 321, a fifth valve port 322, and a sixth valve port 323 that are in communication with each other, wherein the third valve port 313 and the fifth valve port 322 are both exhaust valve ports 340. The liquid supply device 100 is communicated with the vacuum pumping device 400 through the sixth valve port 323, the fourth valve port 321, the second valve port 312 and the first valve port 311 in sequence, and the liquid supply device 100 is communicated with the heat pipe exchanger 200 through the sixth valve port 323, the fourth valve port 321 and the third valve body 330 in sequence.

So configured, when the liquid supply device 100 injects working fluid into the heat pipe exchanger 200 and the vacuumizing device 400, respectively, the non-condensable gas on the side of the U-shaped pipe section 600 close to the first valve body 310 can be discharged through the third valve port 313, and the non-condensable gas on the side of the U-shaped pipe section 600 close to the third valve body 330 can be discharged through the fifth valve port 322.

Example two

As shown in fig. 5, the exhaust valve port 340 is disposed in the first valve body 310 and the third valve body 330, and the first valve body 310 and the third valve body 330 are three-way valves, and the second valve body 320 is a shut-off valve.

Specifically, the first valve body 310 includes a first valve port 311, a second valve port 312, and a third valve port 313 that are in communication with each other, and the third valve body 330 includes a seventh valve port 331, an eighth valve port 332, and a ninth valve port 333 that are in communication with each other, wherein the third valve port 313 and the eighth valve port 332 are both exhaust valve ports 340. The liquid supply device 100 is communicated with the vacuum pumping device 400 through the second valve body 320, the second valve port 312 and the first valve port 311 in sequence, and the liquid supply device 100 is communicated with the heat pipe exchanger 200 through the second valve body 320, the ninth valve port 333 and the seventh valve port 331 in sequence.

So configured, when the liquid supply device 100 injects working fluid into the heat pipe exchanger 200 and the vacuumizing device 400, respectively, the non-condensable gas on the side of the U-shaped pipe section 600 close to the first valve body 310 can be discharged through the third valve port 313, and the non-condensable gas on the side of the U-shaped pipe section 600 close to the third valve body 330 can be discharged through the eighth valve port 332.

Example III

As shown in fig. 6, the exhaust valve port 340 is disposed in the second valve body 320 and the third valve body 330, and the second valve body 320 and the third valve body 330 are both three-way valves, and the first valve body 310 is a shut-off valve.

Specifically, the second valve body 320 includes a fourth valve port 321, a fifth valve port 322, and a sixth valve port 323 that are in communication with each other, and the third valve body 330 includes a seventh valve port 331, an eighth valve port 332, and a ninth valve port 333 that are in communication with each other, wherein the fifth valve port 322 and the eighth valve port 332 are both exhaust valve ports 340. The liquid supply device 100 is communicated with the vacuum pumping device 400 through the sixth valve port 323, the fourth valve port 321 and the first valve body 310 in sequence, and the liquid supply device 100 is communicated with the heat pipe exchanger 200 through the sixth valve port 323, the fourth valve port 321, the ninth valve port 333 and the seventh valve port 331 in sequence.

So configured, when the liquid supply device 100 injects working fluid into the heat pipe exchanger 200 and the vacuumizing device 400, respectively, the non-condensable gas on the side of the U-shaped pipe section 600 close to the first valve body 310 can be discharged through the fifth valve port 322, and the non-condensable gas on the side of the U-shaped pipe section 600 close to the third valve body 330 can be discharged through the eighth valve port 332.

In one embodiment, as shown in fig. 1-9, the vacuum pumping apparatus 400 includes a housing 420, a piston 430, and a driving element (not shown), where the housing 420 is provided with an inner cavity 421, the piston 430 is movably disposed in the inner cavity 421 and separates the inner cavity 421 into a first cavity 422 and a second cavity 423 that are not communicated, the first cavity 422 is communicated with the suction port 410, the driving element is disposed at an end of the piston 430 near the second cavity 423 and is connected to the piston 430, and the driving element can drive the piston 430 to move in a direction near or far from the suction port 410.

Thus, when the driving element is driven to move in a direction away from the suction port 410, the volume of the first chamber 422 is enlarged and the volume of the second chamber 423 is reduced, so that the working medium in the heat pipe heat exchanger 200 flows into the first chamber 422 by gravity. When the driving element is driven to move in a direction approaching the suction port 410, the volume of the first chamber 422 is reduced and the volume of the second chamber 423 is enlarged, so that the working medium in the first chamber 422 flows back into the liquid storage device under the action of pressure.

In addition, by providing the driving element, the moving distance of the piston 430 can be controlled, and even if the first chamber 422 is in a vacuum state, the piston 430 can be ensured not to move towards the suction port 410 under the action of the atmospheric pressure under the limiting action of the driving element, so that the successful vacuum pumping of the heat pipe heat exchanger 200 is ensured.

Specifically, the driving element is a driving cylinder, a linear driving motor, or a rotary driving motor.

When the driving element is a driving cylinder or a linear driving motor, the piston 430 is slidably engaged with the housing 420, and when the driving element is a rotary driving motor, the piston 430 is threadedly engaged with the housing 420.

Further, in an embodiment, as shown in fig. 1-9, the piston 430 includes a main body 431 and a rod 432, the housing 420 is provided with a communication hole 424, the main body 431 is movably matched with an inner wall of the inner cavity 421, the rod 432 is connected to an end of the main body 431 near the second cavity 423, an end of the rod 432 far from the main body 431 extends out of the second cavity 423 through the communication hole 424, and an output end of the driving element is connected to the rod 432.

In this way, the piston 430 is movably matched with the inner wall of the cavity 421 through the main body 431 and the connecting rod 432, and is movably matched with the communication hole 424, so that double limiting of the piston 430 is realized, and the piston 430 is effectively prevented from being deviated from the housing 420.

Further, in an embodiment, as shown in fig. 1 to 8, a sleeve 425 is provided at the communication hole 424, and the rod portion 432 is movably engaged with the cylinder, thus further preventing the eccentric capability of the piston 430.

Because of the friction between the piston 430 and the inner wall of the inner cavity 421, there is a long-felt abrasion between the piston 430 and the inner wall of the inner cavity 421, which results in failure of the seal, and thus failure of the evacuation of the heat pipe heat exchanger 200.

It should be noted that in one embodiment, the outer circumference of the rod portion 432 is provided with graduations, thereby facilitating precise control of the distance that the piston 430 moves.

In an embodiment, as shown in fig. 7-10, the vacuum pumping device 400 further includes a flange ring 440 and an elastic telescopic tube 450 coaxially disposed with the housing 420, one end of the elastic telescopic tube 450 is sealed and fixed on the inner wall of the first cavity 422 through the flange ring 440, the other end is sealed and connected to the piston 430, and the piston 430 can drive the elastic telescopic tube 450 to axially expand and contract along itself.

Because one end of the elastic extension tube 450 is fixed on the inner wall of the first cavity 422 through the flange ring 440, and the other end of the flange ring 440 is fixed on the piston 430, and the expansion and the contraction of the first cavity 422 are realized by the flange ring 440 through the expansion of the flange ring, the elastic extension tube 450 does not need to be in movable friction fit with other parts in the expansion process, and the sealing failure caused by the abrasion of the elastic extension tube 450 is effectively avoided. In addition, in this process, even if the piston 430 or the inner wall of the inner cavity 421 is worn, the tightness of the elastic bellows 450 is not affected, and thus, the air tightness of the vacuum pumping apparatus 400 is greatly improved.

Preferably, the flexible bellows 450 is a bellows.

The corrugated pipe is easy to obtain and low in price, and is beneficial to reducing the manufacturing cost of the whole heat pipe vacuumizing system.

But is not limited thereto, in other embodiments, the elastic bellows 450 may also be a rubber tube, a silicone tube, or a metal laminate tube.

In another embodiment, as shown in fig. 11, the vacuum pumping device 400 further includes a first annular elastic membrane 471 and a second annular elastic membrane 472, wherein one end of the first elastic membrane 471 is sealed and fixed to the inner wall of the first cavity 422, the other end of the first elastic membrane 471 is sealed and connected to one end of the piston 430 near the first cavity 422, one end of the second elastic membrane 472 is sealed and fixed to the inner wall of the second cavity 423, and the other end of the second elastic membrane 472 is sealed and connected to one end of the piston 430 near the second cavity 423.

In this manner, the first elastic membrane 471 can be stretched by itself when the piston 430 is moved toward an end remote from the suction port 410, to ensure that an end of the first chamber 422 adjacent to the second chamber 423 is in a sealed state. When the piston 430 moves toward the end near the suction port 410, the second elastic film 472 may be stretched by itself to ensure that the end of the second chamber 423 near the first chamber 422 is in a sealed state. Because the stretching and rebound of the first elastic film 471 and the second elastic film 472 do not need to be in movable friction fit with other parts, the sealing failure caused by abrasion of the first elastic film 471 and the second elastic film 472 is effectively avoided. In addition, in this process, even if the piston 430 or the inner wall of the inner cavity 421 is worn, the tightness of the first elastic membrane 471 and the second elastic membrane 472 is not affected, so that the air tightness of the vacuum pumping apparatus 400 is greatly improved.

Specifically, the first elastic membrane 471 and the second elastic membrane 472 are made of high elastic materials, and may be made of rubber, silica gel or high elastic plastic materials.

Further, in an embodiment, as shown in fig. 11-15, the vacuum pumping apparatus 400 further includes a plurality of first sealing rings 481, second sealing rings 482, third sealing rings 483, and fourth sealing rings 484, one end of the first elastic membrane 471 is connected to the inner wall of the first cavity 422 through the first sealing rings 481 in a sealing manner, the other end of the first elastic membrane 471 is connected to the piston 430 through the second sealing rings 482 in a sealing manner, one end of the second elastic membrane 472 is connected to the piston 430 through the third sealing rings 483 in a sealing manner, and the other end of the second elastic membrane 472 is connected to the inner wall of the second cavity 423 through the fourth sealing rings 484 in a sealing manner.

In this way, the sealability of the first and second elastic films 471 and 472 is further enhanced.

In one embodiment, as shown in fig. 3 and 4, the housing 420 is further provided with an exhaust port 460 communicating with the second chamber 423, and the exhaust port 460 is used to communicate with an external vacuum pump. So configured, on the one hand, if leakage occurs at the piston 430, the pressure difference between the first chamber 422 and the second chamber 423 can be reduced by sucking the non-condensable gas in the second chamber 423 by the vacuum pump, thereby delaying the progress of the leakage occurring in the first chamber 422. On the other hand, the moving resistance of the piston 430 can be reduced by reducing the air pressure difference of the first chamber 422 and the second chamber 423.

In an embodiment, the number of the vacuum apparatuses 400 is plural, and the plurality of vacuum apparatuses 400 are arranged in parallel, the plurality of vacuum apparatuses 400 are respectively connected to the liquid supply apparatus 100 through the multi-way valves, and the plurality of vacuum apparatuses 400 are respectively connected to the heat pipe heat exchanger 200 through the multi-way valves.

In this way, the suction effect of the vacuum pumping device 400 can be significantly increased, so as to further improve the vacuum pumping effect of the heat pipe heat exchanger 200.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of the present application is to be determined by the following claims.

Claims (10)

1. The heat pipe vacuumizing system is characterized by comprising a liquid supply device (100), a vacuumizing device (400), a heat pipe heat exchanger (200) and a multi-way valve group, wherein the liquid supply device (100), the vacuumizing device (400) and the heat pipe heat exchanger (200) can be mutually communicated through the multi-way valve group; the multi-way valve group can respectively control the opening and closing of a liquid supply port (110) of the liquid supply device (100), the opening and closing of a suction port (410) of the vacuumizing device (400) and the opening and closing of a filling port (210) of the heat pipe heat exchanger (200); the multi-way valve group is provided with an exhaust valve port (340) communicated with an external space so that non-condensable gas can be discharged out of the heat pipe vacuumizing system through the exhaust valve port (340);

the vacuum pumping device (400) can enable the working medium in the heat pipe exchanger (200) to enter the vacuum pumping device (400) by expanding the internal space of the vacuum pumping device (400), and the vacuum pumping device (400) can enable the working medium in the vacuum pumping device (400) to flow back to the liquid supply device (100) by compressing the internal space of the vacuum pumping device.

2. The heat pipe vacuum pumping system of claim 1, wherein the multi-way valve group comprises a first valve body (310), a second valve body (320) and a third valve body (330), the first valve body (310) is connected to a suction port (410) of the vacuum pumping device (400), the second valve body (320) is connected to a liquid supply port (110) of the liquid supply device (100), the third valve body (330) is connected to a filling port (210) of the heat pipe heat exchanger (200), and the liquid supply device (100) can be communicated with the vacuum pumping device (400) sequentially through the second valve body (320) and the first valve body (310), and the liquid supply device (100) can be communicated with the heat pipe heat exchanger (200) sequentially through the second valve body (320) and the third valve body (330), and the vacuum pumping device (400) can be communicated with the heat pipe heat exchanger (200) sequentially through the first valve body (310) and the third valve body (330).

3. The heat pipe vacuum pumping system as defined in claim 1, wherein the vacuum pumping device (400) comprises a housing (420), a piston (430) and a driving element, the housing (420) is provided with an inner cavity (421), the piston (430) is movably arranged in the inner cavity (421) and separates the inner cavity (421) to form a first cavity (422) and a second cavity (423) which are not communicated, the first cavity (422) is communicated with the suction port (410), the driving element is arranged at one end of the piston (430) close to the second cavity (423) and is connected with the piston (430), and the driving element can drive the piston (430) to move towards a direction close to or away from the suction port (410).

4. A heat pipe vacuum pumping system as defined in claim 3, wherein the piston (430) comprises a main body portion (431) and a connecting rod portion (432), the housing (420) is provided with a communication hole (424), the main body portion (431) and the inner wall of the inner cavity (421) are movably matched, the connecting rod portion (432) is connected to one end of the main body portion (431) close to the second cavity (423), one end of the connecting rod portion (432) away from the main body portion (431) extends out of the second cavity (423) through the communication hole (424), and the output end of the driving element is connected to the connecting rod portion (432).

5. A heat pipe vacuumizing system according to claim 3, characterized in that the vacuumizing device (400) further comprises a flange ring (440) and an elastic telescopic pipe (450) which are coaxially arranged with the shell (420), one end of the elastic telescopic pipe (450) is fixed on the inner wall of the first cavity (422) in a sealing way through the flange ring (440), the other end of the elastic telescopic pipe is connected with the piston (430) in a sealing way, and the piston (430) can drive the elastic telescopic pipe (450) to axially stretch and retract along the piston.

6. The heat pipe vacuum pumping system as defined in claim 5, wherein the elastic bellows (450) is a bellows.

7. A heat pipe vacuum pumping system as defined in claim 3, wherein the vacuum pumping device (400) further comprises a ring-shaped first elastic membrane (471) and a ring-shaped second elastic membrane (472), one end of the first elastic membrane (471) is sealed and fixed to the inner wall of the first cavity (422), the other end of the first elastic membrane is sealed and connected to one end of the piston (430) close to the first cavity (422), one end of the second elastic membrane (472) is sealed and fixed to the inner wall of the second cavity (423), and the other end of the second elastic membrane is sealed and connected to one end of the piston (430) close to the second cavity (423).

8. The heat pipe vacuum pumping system as defined in claim 7, wherein the vacuum pumping device (400) further comprises a plurality of first sealing press rings (481), second sealing press rings (482), third sealing press rings (483) and fourth sealing press rings (484), one end of the first elastic membrane (471) is connected to the inner wall of the first cavity (422) through the first sealing press rings (481) in a sealing manner, the other end of the first elastic membrane (471) is connected to the piston (430) through the second sealing press rings (482) in a sealing manner, one end of the second elastic membrane (472) is connected to the piston (430) in a sealing manner through the third sealing press rings (483), and the other end of the second elastic membrane (472) is connected to the inner wall of the second cavity (423) in a sealing manner through the fourth sealing press rings (484).

9. A heat pipe vacuum pumping system as defined in claim 3, wherein the housing (420) is further provided with an extraction opening (460) communicating with the second chamber (423), the extraction opening (460) being adapted to communicate with an external vacuum pump.

10. The heat pipe vacuum system according to claim 1, wherein the number of the vacuum-pumping devices (400) is plural, and plural vacuum-pumping devices (400) are arranged in parallel, plural vacuum-pumping devices (400) are respectively communicated with the liquid-supplying device (100) through the multi-way valve group, and plural vacuum-pumping devices (400) are respectively communicated with the heat pipe heat exchanger (200) through the multi-way valve group.