Server cylindrical fin falling film evaporation heat exchange tube

Abstract

The application discloses a kind of server with columnar fin falling film evaporation heat exchange pipe, it is related to falling film evaporation heat exchanger technical field, including heat exchanger shell, further include the multiple groups of heat exchange tube with fin for transmission heat conduction in equidistant arrangement in heat exchanger shell, it is inserted into the helical flow guide pipe for the evaporation liquid rotation shunt in heat exchange tube with fin, the outer wall of the helical flow guide pipe is equidistantly wound with the helical stripe for flow guide, and helical flow guide pipe is the carbon fiber plastic composite material of light quality as a whole.The application is impacted by using the evaporation liquid that drops, and then drive helical flow guide pipe rotation, again by the helical stripe of helical flow guide pipe and its outer wall winding arrangement to the evaporation liquid in the inner wall of heat exchange tube with fin flow guide and shunt, the thickness of evaporation liquid film in the inner wall of heat exchange tube with fin is controlled in a certain range, ensure that the evaporation rate of evaporation liquid is stably controlled in a certain range.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of falling film evaporative heat exchanger, in particular to a cylindrical fin falling film evaporative heat exchanger for servers. BACKGROUND

[0002] Currently, with the rapid development of artificial intelligence, cloud computing and other technologies, as the core carrier of computing power, the chip power consumption of servers continues to rise, and high-density computing leads to a sharp increase in device heat generation. If the heat cannot be exported in time, the performance of the chip will be significantly degraded, and even hardware failure will be caused. Traditional air cooling is gradually facing a cooling bottleneck due to the low heat capacity of air, and liquid cooling technology has become a necessary choice for high-power servers. The cooling liquid (such as deionized water, ethylene glycol solution or fluorinated liquid) after heating by the server cooling system is in a heat-carrying state, and the cooling effect is poor, so the cooling liquid needs to be cooled. The existing cooling process of the cooling liquid generally transfers heat through a heat exchanger, and the cooled cooling liquid is pumped to the server cooling system by a water pump and pipeline to form a circulating cooling system.

[0003] In the prior art, the heat-carrying cooling liquid (about 25-45℃) is input into a chamber of a falling film evaporative heat exchanger by a water pump, and flows through the outer wall of the cylindrical fin heat exchange tube arranged uniformly. The heat is conducted to the inner wall of the heat exchange tube through the heat transfer surface of the fin expansion, at the same time, the low-boiling evaporative liquid (such as fluorinated medium with a boiling point of 10℃) flows into the inner wall of the heat exchange tube, and a uniform falling film liquid film is formed on the inner wall of the heat exchange tube by the surface tension of the evaporative liquid combined with the inner wall microstructure (such as microgrooves or hydrophilic coating). After absorbing the heat conducted by the heat exchange tube, the evaporative liquid rapidly evaporates and changes phase, so that the temperature of the cooling liquid of the server is significantly reduced to 15-30℃. The gaseous and liquid working medium after evaporation is pumped to a condensing device through a pumping pipeline, and the evaporative liquid after being cooled and liquefied is pumped into the heat exchanger again to form a film, and the cooled server cooling liquid returns to the cooling system for circulating cooling.

[0004] However, the existing cylindrical falling film evaporative heat exchanger is still affected by some factors when used, which affects the evaporation efficiency of the evaporative liquid. First, if the water flow of the evaporative liquid is too large or the flow rate of the water flow is too fast, the kinetic energy of the evaporative liquid is high, which makes it difficult for the liquid film to uniformly adhere to the inner wall under the action of gravity and inertial force. In some areas, the liquid film is too thick, and in other areas, the liquid film may be broken. The thermal resistance in the thick liquid film area increases, the evaporation rate is significantly reduced, and the overall heat exchange uniformity and system energy efficiency are affected.

[0005] The present application aims to solve the problem that the liquid film in some areas is too thick, and the liquid film in other areas may be broken, and the thermal resistance in the thick liquid film area increases, which significantly reduces the evaporation rate.

[0006] In view of the above problems, it is urgent to make innovative design on the basis of the original cylindrical falling film evaporative heat exchange equipment. SUMMARY

[0007] The technical scheme of the present application aims at the technical problem that the prior art solution is too single, and provides a solution significantly different from the prior art, and specifically aims to provide a falling film evaporative heat exchange tube to solve the problem that the liquid film in some areas is too thick, the liquid film in other areas may be broken, the thermal resistance in the thick liquid film area is increased, and the evaporation rate may be significantly reduced.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a cylindrical fin falling film evaporative heat exchange tube for a server, comprising a heat exchanger shell, further comprising a plurality of finned heat exchange tubes arranged at equal intervals inside the heat exchanger shell for heat conduction, and a spiral flow guide pipe inserted into the inside of the finned heat exchange tube for rotating and distributing the evaporated liquid.

[0009] The outer wall of the spiral flow guide pipe is wound with a spiral stripe for flow guide, and the spiral flow guide pipe as a whole is made of light-weight carbon fiber plastic composite material, and the spiral stripe has a certain gap from the inner wall of the finned heat exchange tube, in a non-contact state.

[0010] The inner wall top end of the heat exchanger shell is provided with a driving mechanism for rotating and distributing the evaporated liquid by driving the spiral flow guide pipe to rotate.

[0011] Preferably, the inner wall top end of the heat exchanger shell and below the water accumulator is welded with a first tube plate for limiting and installing the top port of the finned heat exchange tube, and the inner wall bottom end of the heat exchanger shell is welded with a second tube plate for limiting and installing the bottom port of the finned heat exchange tube.

[0012] Preferably, the first tube plate and the second tube plate separate three chambers, i.e. upper chamber, middle chamber and lower chamber, inside the heat exchanger shell, and each group of finned heat exchange tubes is arranged at equal intervals inside the middle chamber, and the outer wall of the finned heat exchange tube is fixed with a plurality of fins for increasing the heat transfer surface at equal angles around the center.

[0013] Preferably, the second tube plate is a double-layer hollow structure, the ports at both ends of each group of finned heat exchange tubes are respectively inserted into the inside of the first tube plate and the second tube plate, and a plug hole matching in size is formed at the position where the side of the first tube plate and the second tube plate close to each other contacts with the port of the finned heat exchange tube.

[0014] Preferably, the inner wall top end of the heat exchanger shell is welded with a water accumulator, the upper surface of the water accumulator is a smooth arc surface, and the upper surface of the water accumulator is provided with a waist-shaped hole corresponding to each group of finned heat exchange tubes for concentrating the evaporated liquid.

[0015] Preferably, the driving mechanism comprises a first connecting pipe coaxially fixed at the top end of the spiral flow guide pipe, a second connecting pipe coaxially fixed on the side outer wall of the first connecting pipe away from the spiral flow guide pipe, and the second connecting pipe is inserted into the inside of the waist-shaped hole;

[0016] Preferably, the outer wall of the second connecting pipe is fixed with a plurality of rotating leaves, the top end of the second connecting pipe is fixed with a spiral flow guide pipe in a concentric manner, and the second connecting pipe penetrates the inner wall bottom end center of the waist-shaped hole;

[0017] Preferably, a plurality of air holes are arranged at equal angles around the center of the top end outer wall of the second connecting pipe, a waterproof cover is fixed on the top end outer wall of the second connecting pipe, and a positioning cannula is fixed on the bottom port of the spiral flow guide pipe, which extends downward and penetrates the lower surface of the second pipe plate;

[0018] Preferably, positioning holes are arranged at the contact position of the waist-shaped hole and the second connecting pipe and at the contact position of the lower surface of the second pipe plate and the positioning cannula, and a plurality of drainage holes are arranged at equal angles around the center of the positioning hole at the edge of each group of the positioning holes;

[0019] Preferably, a plurality of arc-shaped drainage holes are arranged at equal angles around the center of the upper surface of the waist-shaped hole and the lower surface of the second pipe plate.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] Firstly, the driving mechanism utilizes the descending evaporative liquid to impact the rotating leaves, thereby driving the spiral flow guide pipe to rotate, and then the rotating spiral flow guide pipe and the spiral stripes arranged on the outer wall thereof guide and distribute the evaporative liquid on the inner wall of the finned heat exchange pipe, control the thickness of the evaporative liquid film on the inner wall of the finned heat exchange pipe within a certain range, and ensure that the evaporation rate of the evaporative liquid is stably controlled within a certain range;

[0022] The spiral stripes arranged on the outer wall of the spiral flow guide pipe in the rotating state scatter the evaporative liquid, which can improve the evaporation rate of the evaporative liquid to a certain extent, indirectly improve the heat exchange efficiency, and improve the cooling rate of the cooling liquid;

[0023] The descending evaporative liquid continuously impacts the spiral stripes arranged on the outer wall of the spiral flow guide pipe in the narrow gap, which can accelerate the rotation speed of the spiral flow guide pipe made of carbon fiber plastic composite material to a certain extent, and strengthen the operation efficiency of the driving mechanism;

[0024] Finally gaseous evaporation liquid rises along the inner wall of the spiral flow guide pipe and is sprayed into the upper chamber of the water storage cavity, i.e. the water accumulator, through the venting hole. The heat-carrying gaseous evaporation liquid can preheat the low-temperature evaporation liquid just entering the heat exchanger shell and the evaporation liquid between the finned heat exchange tube and the spiral flow guide pipe, so that the evaporation time of the evaporation liquid is shortened to a certain extent, and the heat exchange efficiency of the equipment is indirectly improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a front view of the present application.

[0026] Figure 2 It is a half-section view of the whole equipment of the present application.

[0027] Figure 3 It is a plan view of the internal part of the present application.

[0028] Figure 4 It is a top view of the internal part of the present application.

[0029] Figure 5 It is a partial connection diagram of the finned heat exchange tube and the water accumulator of the present application.

[0030] Figure 6 It is a half-section view of the finned heat exchange tube and the connection diagram of the spiral flow guide pipe of the present application.

[0031] Figure 7 It is a partial enlarged view of the spiral flow guide pipe of the present application.

[0032] Figure 8 It is a connection diagram of the spiral flow guide pipe and the rotating blade of the present application.

[0033] Figure 9 It is a half-section view of the water accumulator of the present application.

[0034] Figure 10 It is a half-section view of the water accumulator of the present application.

[0035] In the figure: 1, heat exchanger shell; 11, first tube plate; 12, second tube plate; 13, finned heat exchange tube; 2, water accumulator; 21, waist-shaped hole;

[0036] 3, positioning hole; 31, drain hole;

[0037] 4, spiral flow guide pipe; 41, first connecting pipe; 42, second connecting pipe; 43, rotating blade; 44, waterproof cover; 45, positioning cannula;

[0038] 5, arc-shaped drain hole. DETAILED DESCRIPTION

[0039] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0040] Please refer to Figures 1 to 10 The present application provides a technical solution: a cylindrical fin falling film evaporative heat exchange tube for a server, comprising a heat exchanger shell 1, further comprising a plurality of finned heat exchange tubes 13 arranged at equal intervals inside the heat exchanger shell 1 for heat conduction, and a spiral flow guide pipe 4 inserted into the finned heat exchange tube 13 for rotating and distributing the evaporative liquid.

[0041] The outer wall of the spiral flow guide pipe 4 is wound with spiral stripes for flow guide, and the spiral flow guide pipe 4 as a whole is made of light-weight carbon fiber plastic composite material, and the spiral stripes have a certain gap with the inner wall of the finned heat exchange tube 13, being in a non-contact state.

[0042] The inner wall top end of the heat exchanger shell 1 is provided with a driving mechanism for rotating and distributing the evaporative liquid by driving the spiral flow guide pipe 4 to rotate.

[0043] In specific implementation, the descending evaporative liquid impacts the spiral blade 43, thereby driving the spiral flow guide pipe 4 to rotate, and then the rotating spiral flow guide pipe 4 and the spiral stripes wound on the outer wall thereof guide and distribute the evaporative liquid located on the inner wall of the finned heat exchange tube 13, so as to control the thickness of the evaporative liquid film on the inner wall of the finned heat exchange tube 13 within a certain range, ensure that the evaporation rate of the evaporative liquid is stably controlled within a certain range, and the spiral stripes wound on the outer wall of the spiral flow guide pipe 4 in the rotating state scatter the evaporative liquid, which can improve the evaporation rate of the evaporative liquid to a certain extent, indirectly improve the heat exchange efficiency, and improve the cooling rate of the cooling liquid.

[0044] As a further embodiment of the present application, the inner wall top end of the heat exchanger shell 1 and below the water accumulator 2 are welded with a first tube plate 11 for limiting and installing the top port of the finned heat exchange tube 13, and the inner wall bottom end of the heat exchanger shell 1 is welded with a second tube plate 12 for limiting and installing the bottom port of the finned heat exchange tube 13.

[0045] In specific implementation, the first tube plate 11 and the second tube plate 12 inside the heat exchanger shell 1 and the water accumulator 2 and the heat exchanger shell 1 are all welded, which can guarantee the air tightness of the equipment.

[0046] As a further implementation of the present application, the first tube plate 11 and the second tube plate 12 separate three chambers of upper chamber, middle chamber and lower chamber inside the heat exchanger shell 1, and each group of finned heat exchange tubes 13 is arranged equidistantly inside the middle chamber, and the outer wall of the finned heat exchange tube 13 is fixed with a plurality of groups of fins for increasing the heat transfer surface at equal angles around the center.

[0047] In a specific implementation, the upper chamber is further separated into a water storage chamber and a distribution chamber by the water accumulator 2, the evaporative liquid preheated by the hot gas evaporative liquid moves downward along the waist-shaped hole 21 and drives the rotating blade 43 and the spiral flow guide pipe 4 to rotate, and then the evaporative liquid flows downward to the distribution chamber through the lower water hole 31 and enters the inside of the finned heat exchange tube 13 through a plurality of groups of trumpet-shaped smooth hole positions on the upper surface of the first tube plate 11.

[0048] As a further implementation of the present application, the second tube plate 12 is a double-layer hollow structure, the ports at both ends of each group of finned heat exchange tubes 13 are respectively inserted into the inside of the first tube plate 11 and the second tube plate 12, and a size-matched insertion hole is arranged at the position where the side of each group of the first tube plate 11 and the second tube plate 12 close to each other contacts the port of the finned heat exchange tube 13.

[0049] In a specific implementation, the insertion hole arranged on the outer wall of the second tube plate 12 cooperates with the first tube plate 11 to fix and limit each group of finned heat exchange tubes 13, and the connection part is coated with a high-temperature-resistant sealing glue or is provided with a sealing ring.

[0050] As a further implementation of the present application, the water accumulator 2 is welded to the top end position of the inner wall of the heat exchanger shell 1, the upper surface of the water accumulator 2 is a smooth arc surface, and the waist-shaped hole 21 for concentrating the evaporative liquid is arranged on the upper surface of the water accumulator 2 corresponding to each group of finned heat exchange tubes 13.

[0051] In a specific implementation, the upper surface of the water accumulator 2 is a smooth arc surface, which can relatively uniformly distribute the low-temperature evaporative liquid flowing from the upper central position to each position on the upper surface of the water accumulator 2, so as to ensure that the water inflow rate of each waist-shaped hole 21 always remains in a stable range, and the remaining evaporative liquid directly enters the distribution chamber through the arc-shaped lower water hole 5 arranged around the circular ring.

[0052] As a further implementation of the present application, the driving mechanism includes the first connecting pipe 41 coaxially fixed to the top end position of the spiral flow guide pipe 4, the second connecting pipe 42 coaxially fixed to the outer wall of the side away from the spiral flow guide pipe 4, and the second connecting pipe 42 inserted into the inside of the waist-shaped hole 21.

[0053] In specific implementation, the second connecting pipe 42 is connected with the helical flow guide pipe 4 through the first connecting pipe 41, and the inside of the second connecting pipe 42, the first connecting pipe 41 and the helical flow guide pipe 4 constitutes an exhaust passage. The gaseous evaporated liquid flows along the exhaust passage into the water storage cavity. The gaseous heat-carrying evaporated liquid passes through the inner wall of the helical flow guide pipe 4 and preheats the evaporated liquid located at the interval between the inner wall of the finned heat exchange pipe 13 and the outer wall of the helical flow guide pipe 4. The gaseous evaporated liquid continues to flow upwards into the water storage cavity to preheat the evaporated liquid in a low-temperature state. The two preheating processes can shorten the time of heating and evaporating the evaporated liquid, and indirectly improve the heat exchange efficiency of the equipment.

[0054] As a further embodiment of the present application, the outer wall of the second connecting pipe 42 is fixed with a plurality of rotating leaves 43, the top end of the second connecting pipe 42 is fixed concentrically with the helical flow guide pipe 4, and the second connecting pipe 42 penetrates the inner wall of the waist-shaped hole 21 at the bottom end.

[0055] In specific implementation, the evaporated liquid flowing downward impacts the plurality of rotating leaves 43, thereby driving the helical flow guide pipe 4 to rotate, and realizing stable flow guiding of the evaporated liquid.

[0056] As a further embodiment of the present application, a plurality of air holes are arranged at the top end of the outer wall of the second connecting pipe 42 at equal angles around the center, a waterproof cover 44 is fixed to the top end of the outer wall of the second connecting pipe 42, and a positioning pipe 45 is fixed to the bottom end of the helical flow guide pipe 4, and the positioning pipe 45 extends downward and penetrates the lower surface of the second pipe plate 12.

[0057] In specific implementation, the plurality of air holes can provide a passage for the gaseous heat-carrying evaporated liquid to enter the water storage cavity, and the waterproof cover 44 can prevent a large amount of evaporated liquid from flowing into the helical flow guide pipe 4, thereby avoiding that a large amount of evaporated liquid blocks the exhaust passage.

[0058] As a further embodiment of the present application, the waist-shaped hole 21 and the lower surface of the second pipe plate 12 are both provided with positioning holes 3, and the edges of each group of positioning holes 3 are arranged with a plurality of downcomers 31 at equal angles around the center of the positioning holes 3.

[0059] In specific implementation, the positioning holes 3 can provide support for the bottom of the helical flow guide pipe 4, and ensure stable operation of the helical flow guide pipe 4 during rotation, and the plurality of downcomers 31 can ensure that the evaporated liquid flows smoothly into the lower cavity.

[0060] As a further embodiment of the present application, the upper surface of the waist-shaped hole 21 and the lower surface of the second pipe plate 12 are both arranged with a plurality of arc-shaped downcomers 5 at equal angles around the center.

[0061] In specific implementation, the plurality of arc-shaped downcomers 5 can increase the flow of the evaporated liquid, guide the evaporated liquid at the edge position, and prevent liquid accumulation.

[0062] Working principle: First, the heat-carrying coolant (temperature about 15℃ ~ 60℃) pumped by the server cold pump flows into the middle cavity of the heat exchanger shell 1 (the top of one side of the middle cavity is equipped with a water inlet valve, the bottom of the other side of the middle cavity is equipped with a water outlet valve, and multiple groups of flow guide baffles are installed diagonally inside the middle cavity to form a one-way channel) and contacts each group of finned heat exchange pipes 13 to exchange heat;

[0063] In the process of the heat-carrying coolant flowing into the middle cavity, the evaporative liquid (liquid with a boiling point of 15℃ ~ 60℃) is pumped from the top water inlet of the heat exchanger shell 1. The evaporative liquid first falls naturally by gravity and falls onto the circular-arch-shaped upper surface of the water accumulator 2. Because the flow rate of the evaporative liquid is fast and the water volume is large, part of the evaporative liquid will directly fall onto the upper surface of the first tube plate 11 through the arc-shaped drain hole 5;

[0064] Most of the evaporative liquid will temporarily accumulate on the upper surface of the water accumulator 2 in the driving mechanism, and another part of the evaporative liquid will be introduced into the waist-shaped hole 21 (referring to the hole cavity with a narrow middle and relatively thick upper and lower ends). The evaporative liquid uses gravity to squeeze the narrow waist-shaped hole 21 to increase the flow rate of the water flow, and uses the force of the evaporative liquid flowing downward to drive the spiral flow guide pipe 4 and the upper and lower components to rotate in the same direction. The evaporative liquid in the waist-shaped hole 21 eventually flows through the drain hole 31 to the upper surface of the first tube plate 11;

[0065] It should be noted that the first tube plate 11 and the second tube plate 12 divide the inner cavity of the heat exchanger shell 1 into three sealed chambers: the upper cavity, the middle cavity, and the lower cavity. The two ends of each group of finned heat exchange pipes 13 are inserted into the outer walls of the first tube plate 11 and the second tube plate 12 on the side close to each other, and the upper cavity and the lower cavity are connected by the finned heat exchange pipes 13. The upper cavity is further divided into a water storage cavity and a shunt cavity by the water accumulator 2, and the evaporative liquid flows through the water storage cavity and the shunt cavity from top to bottom.

[0066] Then the evaporative liquid (the flow rate of the evaporative liquid is relatively slow at this time because it has passed through multiple obstacles) slowly flows through the trumpet-shaped hole on the first tube plate 11 to the inner wall of the finned heat exchange pipe 13 (note that the upper end of the finned heat exchange pipe 13 is inserted into the corresponding hole on the first tube plate 11, the holes on the upper surface of the first tube plate 11 are trumpet-shaped, the inner wall of the trumpet-shaped hole is smooth, and the inner diameter of the finned heat exchange pipe 13 is the same as the inner diameter of the bottom of each corresponding trumpet-shaped hole).

[0067] The spiral guide pipe 4 in the rotating state uses the spiral stripes wound on the outer wall to uniformly distribute the evaporated liquid on the inner wall of the finned heat exchange pipe 13, and the interval between the outer wall of the spiral guide pipe 4 and the finned heat exchange pipe 13 limits the thickness of the falling film (the water film formed inside the finned heat exchange pipe 13), preventing the evaporated liquid from having different thicknesses and stabilizing the evaporation rate of the equipment. At the same time, the spiral stripes wound on the outer wall of the spiral guide pipe 4 can also scatter part of the evaporated liquid into tiny droplets during rotation, further improving the evaporation rate.

[0068] Part of the evaporated liquid evaporates directly at the interval position of the finned heat exchange pipe 13 and the spiral guide pipe 4 (the heat of the cooling liquid is conducted through the finned heat exchange pipe 13 and evaporates the evaporated liquid film flowing through), and the water vapor formed after evaporation flows downstream into the lower cavity with the downward flow of the water film (i.e. another part of the liquid evaporated liquid that has not been evaporated). Or up into the upper cavity along the gap between the spiral guide pipe 4 and the finned heat exchange pipe 13. In the evaporation process, the heat carried by the cooling liquid in the middle cavity is continuously conducted out, achieving rapid cooling of the cooling liquid. When the temperature of the cooling liquid in the middle cavity drops to 15°C or below, the water outlet valve at the bottom of one side of the middle cavity is opened to discharge the cooling liquid that has completed the cooling. Then the cooled cooling liquid is pumped back to the server cold row. If a single cooling is not enough to achieve the expected cooling effect, the cooling liquid after a round of cooling can be returned to the heat exchanger shell 1 for multiple rounds of cooling until the cooling liquid is cooled to the expected temperature.

[0069] The evaporated liquid (including liquid and gas) flows along the inner wall of the finned heat exchange pipe 13 to the cavity at the middle position of the second tube plate 12, and finally enters the lower cavity through the lower water hole 31. At this time, the evaporated liquid has been in a heat-carrying state after a round of evaporation (but has not reached the boiling point). The liquid evaporated liquid flows into the external condensing equipment through the water outlet at the bottom of the heat exchanger shell 1, and is pumped to the water inlet at the top of the heat exchanger shell 1 for a new round of heat exchange after a round of cooling.

[0070] The heat-carrying gaseous evaporated liquid rises upward through the hollow inner cavity of the spiral guide pipe 4 (hot steam moves upward) and the inner wall of the first connecting pipe 41 and the second connecting pipe 42. The heat-carrying gaseous evaporated liquid rises continuously and finally enters the upper chamber of the water storage cavity, i.e. the upper chamber of the water reservoir 2, through the air hole. The heat-carrying gaseous evaporated liquid can preheat the water film at the interval between the finned heat exchange pipe 13 and the spiral guide pipe 4 during the process of passing through the spiral guide pipe 4. The heat-carrying gaseous evaporated liquid can also preheat the evaporated liquid entering the water storage cavity for another round, to a certain extent, to shorten the time of evaporated liquid evaporation and indirectly improve the heat exchange efficiency of the equipment. When there is too much gaseous steam in the heat exchanger shell 1, the pressure can be reduced through the multiple air vents.

[0071] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A server with columnar fin falling film evaporative heat exchange tube, comprising a heat exchanger shell (1), characterized in that: Also include equidistantly arranged in the heat exchanger shell (1) for the transmission of heat conduction multiple sets of finned heat exchange tube (13), inserted into the finned heat exchange tube (13) for the evaporation of liquid rotating shunt spiral guide pipe (4); The outer wall of the spiral guide pipe (4) is equidistantly wrapped with spiral stripes for flow guide, and the spiral guide pipe (4) as a whole is a light weight carbon fiber plastic composite material, the spiral stripes have a certain gap with the inner wall of the finned heat exchange tube (13), and are in a non-contact state; The inner wall top end of the heat exchanger shell (1) is provided with a driving mechanism for driving the spiral guide pipe (4) to rotate and realize rotating shunt by using the sinking evaporation liquid.

2. The columnar fin falling-film evaporating heat exchange tube for a server according to claim 1, characterized in that: The inner wall top end of the heat exchanger shell (1) and below the water accumulator (2) is welded with a first tube plate (11) for limiting installation of the top port of the finned heat exchange tube (13), and the inner wall bottom end position of the heat exchanger shell (1) is welded with a second tube plate (12) for limiting installation of the bottom port of the finned heat exchange tube (13).

3. The columnar fin falling-film evaporating heat exchange tube for a server according to claim 2, characterized in that: The first tube plate (11) and the second tube plate (12) separate three chambers of upper chamber, middle chamber and lower chamber inside the heat exchanger shell (1), and each set of finned heat exchange tube (13) is equidistantly arranged inside the middle chamber, and the outer wall of the finned heat exchange tube (13) is fixed with multiple sets of fins for increasing the heat transfer surface at equal angles around the center.

4. The columnar fin falling-film evaporating heat exchange tube for a server according to claim 3, characterized in that: The second tube plate (12) is a double-layer hollow structure, the ports at both ends of each set of finned heat exchange tube (13) are respectively inserted into the inside of the first tube plate (11) and the second tube plate (12), and the side of each set of first tube plate (11) and second tube plate (12) close to each other is provided with a size matched insertion hole at the position contacting with the port of the finned heat exchange tube (13).

5. The columnar finned falling-film evaporating heat exchange tube for a server according to claim 4, characterized in that: The inner wall top end position of the heat exchanger shell (1) is welded with a water accumulator (2), the upper surface of the water accumulator (2) is a smooth arc surface, and the upper surface of the water accumulator (2) is provided with a waist-shaped hole (21) for concentrating evaporation liquid corresponding to each set of finned heat exchange tube (13).

6. The columnar finned falling-film evaporating heat exchange tube for a server according to claim 5, characterized in that: The driving mechanism comprises a first connecting pipe (41) coaxially fixed at the top end position of the spiral guide pipe (4), the outer wall of the side of the first connecting pipe (41) away from the spiral guide pipe (4) is coaxially fixed with a second connecting pipe (42), and the second connecting pipe (42) is inserted into the inside of the waist-shaped hole (21).

7. The columnar finned falling-film evaporating heat exchange tube for a server according to claim 6, characterized in that: The outer wall of the second connecting pipe (42) is fixed with multiple sets of rotating leaves (43), the top end position of the second connecting pipe (42) is concentrically fixed with the spiral guide pipe (4), and the second connecting pipe (42) penetrates the inner wall bottom end center of the waist-shaped hole (21).

8. The columnar finned falling-film evaporating heat exchange tube for a server according to claim 7, characterized in that: The top end outer wall of the second connecting pipe (42) is provided with multiple sets of air holes at equal angles around the center, the top end outer wall of the second connecting pipe (42) is fixed with a waterproof cover (44), the bottom port of the spiral guide pipe (4) is fixed with a positioning insertion pipe (45), the positioning insertion pipe (45) extends downward and penetrates the lower surface of the second tube plate (12).

9. The columnar finned falling-film evaporating heat exchange tube for a server according to claim 8, characterized in that: The waist-shaped hole (21) is provided with a positioning hole (3) at the position where the waist-shaped hole (21) is in contact with the second connecting pipe (42) and the lower surface of the second tube plate (12) is in contact with the positioning pipe (45), and the edges of each group of the positioning holes (3) are provided with a plurality of groups of drain holes (31) which are arranged at equal angles around the center of the positioning hole (3).

10. The columnar finned falling-film evaporating heat exchange tube for a server according to claim 9, characterized in that: The upper surface of the waist-shaped hole (21) and the lower surface of the second tube plate (12) are both provided with a plurality of groups of arc-shaped drain holes (5) which are arranged at equal angles around the center.

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