CN221055582U - Heat exchange device for evaporative cooling - Google Patents

Abstract

The utility model relates to the technical field of liquid cooling heat dissipation, in particular to a heat exchange device for evaporative cooling. The utility model aims to solve the problems that spray water cannot form a continuous water film and the heat dissipation effect is poor, and the spray water heat dissipation device comprises a plurality of U-shaped heat exchange assemblies, wherein the U-shaped heat exchange assemblies are arranged at intervals along the width direction and are parallel to each other, each U-shaped heat exchange assembly comprises a plurality of U-shaped pipes with openings arranged downwards and a plurality of U-shaped cooling fins, the U-shaped pipes are arranged at intervals along the length direction of the U-shaped heat exchange assembly and are parallel to each other, U-shaped through surfaces formed by the width and the height of the U-shaped pipes are perpendicular to the length direction of the corresponding U-shaped heat exchange assembly, and the U-shaped pipes positioned on the same U-shaped heat exchange assembly are sequentially connected through the U-shaped cooling fins, so that liquid through channels with the through directions consistent with the height directions of the U-shaped cooling fins are formed among the U-shaped straight pipes; the U-shaped pipes positioned on different U-shaped heat exchange assemblies are in one-to-one correspondence and are sequentially connected to form a serpentine heat exchange pipe.

Description

Heat exchange device for evaporative cooling

Technical Field

The utility model relates to the technical field of liquid cooling heat dissipation, in particular to a heat exchange device for evaporative cooling.

Background

The spray type serpentine tube heat exchanger has simple structure and strong heat exchange capability, and is widely applied to cooling towers and evaporative cooling units.

Most spray-type serpentine pipes at present consist of the following parts: serpentine heat exchange tubes, cooling fins and fixed frames; the whole heat exchanger is characterized in that a coiled pipe is manufactured through a pipe bending machine, then a frame is adopted to fix radiating fins and the coiled pipe in the same frame to form a whole heat exchanger, in the heat exchanger, heat exchange fluid mainly flows in the heat exchange pipe, external spray water falls above the heat exchanger after passing through a spraying device, flows from top to bottom, and sweeps the coiled pipe and the radiating fins to form a continuous water film, and heat exchange is completed with the heat exchange fluid in the pipe. However, this type of heat exchanger has several drawbacks:

There is great clearance like, this fin only acts as the guide plate between fin and the coiled pipe, and the guide shower water forms the continuity water film on the heat exchanger, can't strengthen the heat transfer area of heat exchanger in fact, and this heat exchanger is the light pipe heat exchanger, does not take the fin, and the heat transfer effect is relatively poor.

Because the coiled pipe is the pipe, spray water forms the water film from last down flow in-process and the coiled pipe wall takes place the striking, leads to water film fracture or splashes, can't form continuous water film, and spray water loss is great, leads to the heat transfer pipe of heat exchanger below can't contact with spray water to exchange heat under the serious condition, reduces the heat transfer performance of whole heat exchanger.

In view of this, there is a need for improvements to existing spray serpentine heat exchangers to improve heat exchange performance.

Disclosure of utility model

The utility model aims to overcome at least one defect of the prior art, and provides a heat exchange device for evaporative cooling, which is used for solving the problems that spray water cannot form a continuous water film and the heat dissipation effect is poor.

The utility model adopts the technical scheme that the heat exchange device for evaporation cooling is provided, the length directions of the U-shaped heat exchange assemblies are parallel to each other and keep a space, the U-shaped heat exchange assemblies comprise a plurality of U-shaped pipes and a plurality of U-shaped cooling fins, the U-shaped pipes are arranged at intervals along the length direction of the U-shaped heat exchange assemblies and are parallel to each other, the U-shaped through surfaces formed by the width and the height of the U-shaped pipes are perpendicular to the length direction of the corresponding U-shaped heat exchange assemblies, and the U-shaped pipes on the same U-shaped heat exchange assembly are sequentially connected through the U-shaped cooling fins, so that liquid passing channels are formed among the U-shaped straight pipes, and the through directions of the liquid passing channels are consistent with the height directions of the U-shaped pipes; the U-shaped heat exchange tubes are sequentially connected with one another to form a serpentine heat exchange tube, wherein the U-shaped tubes are located on different U-shaped heat exchange assemblies and correspond to one another one by one.

In the scheme, the U-shaped pipes and the U-shaped cooling fins are sequentially connected, so that the U-shaped pipes and the U-shaped cooling fins form a heat transfer unit, the area of the heat transfer unit in heat exchange with spray water is effectively increased, when the spray water passes through the liquid passing channel from top to bottom, the spray water completely flows through the surface of the U-shaped cooling fins and fully contacts with each U-shaped pipe of the serpentine heat exchange pipe, the heat exchange level of high-temperature working media flowing in the serpentine heat exchange pipe is greatly improved, in addition, the spray water flowing from top to bottom forms a continuous liquid film, the high-temperature working media flowing in the serpentine heat exchange pipe realize high-level heat exchange, and again, as the stroke of the spray water is only the height of the liquid passing channel, namely the height of the serpentine heat exchange pipe, the spray water has smaller spray temperature change range from top to bottom, and can realize relatively uniform heat exchange on all U-shaped heat exchange components, and compared with the prior art, the scheme can also avoid the bad phenomenon of local overheating along the extending direction of the serpentine heat exchange pipe. Simultaneously, this scheme is convenient for through processing preparation U type heat transfer subassembly at first, thereby connects U type heat transfer subassembly through the opening of U type pipe and makes coiled pipe heat transfer part again, can simplify the preparation process, improves manufacturing efficiency.

Further, a total liquid inlet end and a total liquid return end are further arranged, and the U-shaped heat exchange component is communicated with the total liquid inlet end and the total liquid return end through the serpentine heat exchange tube.

Further, a plurality of second connecting pieces are further arranged, every two adjacent serpentine heat exchange pipes are communicated through the second connecting pieces to form a serpentine heat exchange unit, each serpentine heat exchange unit is provided with a liquid separating inlet and a liquid separating return inlet, each liquid separating inlet is communicated with the total liquid inlet, and each liquid separating return inlet is communicated with the total liquid return end.

In this scheme, the high temperature working medium that always feed liquor end flowed into coiled pipe heat transfer unit only needs to flow through after the runner length of two snakelike heat exchange tubes to always return the liquid end, can improve the time and the heat exchange area that high temperature working medium flowed through snakelike heat exchange tube and outside cooling water and carry out heat transfer to promote heat exchange efficiency.

Further, the liquid separating inlet and the liquid separating return inlet are both arranged on the U-shaped heat exchange component at one side.

In this scheme, define two sets of U type heat transfer subassembly that will locate as first heat transfer subassembly and second heat transfer subassembly, be located the adjacent U type pipe on the first U type heat transfer subassembly through the second connecting piece intercommunication, thereby make adjacent snakelike heat exchange pipe intercommunication become a snakelike pipe heat transfer unit, divide the inlet and divide back the liquid mouth then all to be located the second U type heat transfer subassembly with the opposite side of first U type heat transfer subassembly, and for the interval setting, be convenient for also match the setting with total liquid return end and total inlet and in the one side that corresponds second U type heat transfer subassembly, thereby simplify total inlet and divide the inlet, total liquid return end also divide the connecting line between the liquid return mouth.

Further, the setting positions of the total liquid inlet end and the total liquid return end are all located above the highest point of the U-shaped heat exchange tube.

In this scheme, the working medium that waits to cool flows into serpentine heat exchange tube from the feed liquor end, can improve inflow velocity with the help of the action of gravity, when cooling working medium after serpentine heat exchange element heat transfer flows from total liquid return end, because total liquid return end is higher than U type heat exchange tube's highest point, then can play and carry out the effect of evacuation to serpentine heat exchange tube voluntarily, make the working medium fully full of serpentine heat exchange tube, improve the utilization ratio to serpentine heat exchange tube, and still make working medium circulation process road smooth, improve heat exchange efficiency.

The total liquid return end is higher than the total liquid inlet end.

According to the scheme, the high-temperature working medium flowing in the coiled pipe can be well emptied, and the working medium conveying process is smooth.

Further, the inner walls of the U-shaped pipes are provided with thread structures.

The U-shaped cooling tube of this scheme specifically can be the internal thread pipe, can increase the area of contact of working medium and cooling tube, promotes heat exchange efficiency.

Further, the heat exchange device comprises a fixed frame, wherein the U-shaped heat exchange component is arranged inside the fixed frame, openings of the U-shaped pipes face to the bottom of the fixed frame, and the top of the fixed frame is communicated with the outside.

The fixed frame of this scheme can carry U type heat transfer module's installation stability, and has the guard action to U type heat transfer module, and spray water flows U type heat transfer module and top-down through fixed frame's top and flows through the cistern way, carries out efficient heat exchange to the high temperature working medium of U type pipe.

Further, a flow equalizing device is also arranged and used for guiding the cooling medium to the liquid passing channel.

Preferably, the flow equalizing device is a flow equalizing water disc, the flow equalizing water disc is arranged at the top of the fixed frame in a matching way, the flow equalizing water disc is provided with a plurality of first liquid through holes, and the positions of the first liquid through holes are corresponding to the arc-shaped top of the U-shaped radiating fin.

According to the scheme, the spray water flows into the arc-shaped top of the corresponding U-shaped radiating fin through the first liquid passing holes in an aligned mode, and the liquid passing channels are arranged on the surfaces of the U-shaped heat exchange assemblies on two sides of the arc-shaped top of the U-shaped radiating fin in a one-to-one opposite mode, so that the spray water led in the first liquid passing holes flows through the corresponding two liquid passing channels from top to bottom after passing through the arc-shaped top to form a continuous liquid film, and efficient heat exchange is achieved for the U-shaped tubes on two sides of the liquid passing channels.

Optionally, the flow equalizing water tray is further provided with a plurality of second liquid passing holes, and the positions of the second liquid passing holes are corresponding to the arc-shaped top of the U-shaped tube.

According to the scheme, the spray water flowing in from the second liquid passing hole is aligned to the arc-shaped top of the U-shaped pipe, and then is respectively conveyed from top to bottom through the two straight pipes of the U-shaped pipe, so that a continuous liquid film can be formed on the two straight pipes of each U-shaped pipe, and the heat exchange efficiency of high-temperature media flowing in the straight pipes is improved.

Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts a mode that a plurality of U-shaped heat exchange components are mutually connected to form the serpentine heat exchange tube, changes the conventional structure of the current serpentine heat exchange piece, combines the heat exchange tube with the radiating fin, effectively improves the heat exchange area of the whole serpentine heat exchange component, improves the heat exchange quantity of the whole serpentine heat exchange component, and reduces the production cost of the serpentine heat exchange component; based on the unique U-shaped heat exchange assembly structure, the heat exchange tube and the radiating fin are combined to form the liquid passing groove, the surface is smooth, no obstacle or protrusion exists in the flowing process of spray water, a continuous and complete spray water film can be formed on the surface of the coiled tube heat exchange component, the heat exchange between spray cooling water and the coiled tube heat exchange component is sufficient, no anhydrous drought area exists, and the heat exchange efficiency of the whole coiled tube heat exchange component is improved. On the basis, the internal thread pipe is adopted by the coiled pipe heat exchange component, so that the internal heat exchange efficiency of the coiled pipe heat exchange component is synchronously improved, and the performance of the heat exchange device for evaporative cooling is effectively improved.

Drawings

Fig. 1 is a first structural view of a serpentine heat exchange member of the present utility model.

Fig. 2 is a front view of a serpentine tube heat exchange component of the present utility model.

Fig. 3 is a top view of a serpentine tube heat exchange component of the present utility model.

FIG. 4 is a schematic view of the flow direction of the high temperature working medium in the serpentine heat exchange tube of the present utility model.

Fig. 5 is a first block diagram of a serpentine tube heat exchanger of the present utility model.

Fig. 6 is a left side view of a serpentine tube heat exchanger of the present utility model.

Fig. 7 is a top view of a serpentine tube heat exchanger of the present utility model.

Fig. 8 is a front view of a serpentine tube heat exchanger of the present utility model.

Reference numerals: the heat exchange device comprises a serpentine heat exchange component 10, a serpentine heat exchange tube 100, a U-shaped tube 110, a first connecting piece 120, a liquid inlet tube 130, a liquid return tube 140, a U-shaped heat exchange assembly 200, a U-shaped radiating fin 210, a second connecting piece 220, a liquid passing channel 230, a total liquid inlet end 300, a total liquid return end 400, a fixed frame 500, a flow equalizing water tray 600, a first liquid passing hole 610 and a second liquid passing hole 620.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the utility model. For better illustration of the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1

As shown in fig. 1-3, the embodiment provides a heat exchange device for evaporative cooling, which comprises a plurality of U-shaped heat exchange assemblies 200, wherein the U-shaped heat exchange assemblies 200 are arranged at intervals along the width direction and are parallel to each other, the U-shaped heat exchange assemblies 200 comprise a plurality of U-shaped pipes 110 and a plurality of U-shaped cooling fins 210, the openings of the U-shaped pipes 110 are all arranged downwards, the U-shaped pipes 110 are all arranged at intervals along the length direction of the U-shaped heat exchange assemblies 200 and are parallel to each other, the U-shaped through surfaces formed by the width and the height of the U-shaped pipes 110 are all perpendicular to the length direction of the corresponding U-shaped heat exchange assemblies 200, and the U-shaped pipes 110 positioned on the same U-shaped heat exchange assemblies 200 are sequentially connected through the U-shaped cooling fins 210, so that liquid passing channels 230 are formed among the U-shaped straight pipes 110, and the through directions of the liquid passing channels 230 are consistent with the height directions of the U-shaped pipes 110; the U-shaped tubes 110 located on different U-shaped heat exchange assemblies 200 are in one-to-one correspondence with each other, and the U-shaped tubes 110 in one-to-one correspondence with each other are sequentially connected to form the serpentine heat exchange tube 100. It will be appreciated that the U-shaped heat exchange assemblies 200 are arranged at intervals in the width direction and parallel to each other, and are sequentially connected to the U-shaped tubes 110 corresponding to each other in position one by one, thereby obtaining the serpentine tube heat exchange member 10 of the heat exchange device for evaporative cooling of the present utility model.

In particular, in order to make the connection portion of the adjacent serpentine heat exchange tubes 100 be sequentially communicated with the corresponding U-shaped tubes 110, the first connection portion 120 is in the form of an elbow connection portion, in addition, in order to make the U-shaped tubes 110 between the different serpentine heat exchange tubes 100 be disposed correspondingly, the appearance shape of each serpentine heat exchange tube 100 is substantially identical, and the appearance shape of the U-shaped tube 110 on each serpentine heat exchange tube 100 is also substantially identical, when the serpentine heat exchange member 10 is disposed, the preferred embodiment is to uniformly and parallelly arrange the serpentine heat exchange tubes 100 so that the overall top view of the serpentine heat exchange member 10 is in a parallelogram, which is equivalent to that the extending directions of the serpentine heat exchange tubes 100 are all parallel to one pair of parallel sides of the parallelogram, and the U-shaped tubes 110 corresponding to the positions on different serpentine heat exchange tubes 100 are arranged in a plurality of groups, and the extending directions of each group of the U-shaped tubes 110 are all parallel to the other pair of parallel sides of the parallelogram, and the U-shaped heat exchange assemblies 200 corresponding to each other are formed by disposing the U-shaped heat dissipation fins 210 between the adjacent U-shaped tubes 110, and the U-shaped heat exchange assemblies can be distributed on two sides of the parallel fluid tanks 200. In particular, in order to simplify the arrangement of the serpentine heat exchange tube 100, the serpentine heat exchange tube 100 is simply and regularly arranged to form the serpentine heat exchange member 10 having a rectangular shape in a top view, and at this time, the extending direction of the serpentine heat exchange tube 100 is perpendicular to the extending direction of the U-shaped heat exchange assembly 200.

When in use, as shown in fig. 3, the U-shaped tubes 110 and the U-shaped cooling fins 210 are sequentially connected, so that the U-shaped tubes 110 and the U-shaped cooling fins 210 form a small heat transfer unit, the area of the heat transfer unit when in heat exchange with spray water is effectively increased, when the spray water passes through the liquid passing channel 230 from top to bottom, the spray water completely flows through the surface of the U-shaped cooling fins 210 and fully contacts each U-shaped tube 110 of the serpentine heat exchange tube 100, the heat exchange level of high-temperature working medium flowing in the serpentine heat exchange tube 100 is greatly improved, in addition, the spray water flowing from top to bottom forms a continuous liquid film through the liquid passing channel 230, the high-level heat exchange is realized for the high-temperature working medium flowing in the serpentine heat exchange tube 100, and in addition, as the travel of the spray water in the scheme is only the height of the liquid passing channel 230, namely the height of the serpentine heat exchange tube 100 is equivalent, in the process, the temperature change range of the spray water from top to bottom is small, the relatively uniform heat exchange of the whole serpentine heat exchange part 10 can be realized, and compared with the prior art, the poor local overheating phenomenon of the serpentine heat exchange part can be avoided in the extending direction of the cooling water along the direction of the serpentine heat exchange tube 100.

It is easy to understand that in the present utility model, the number of the U-shaped heat exchange assemblies 200 is identical to the number of the U-shaped tubes of one serpentine heat exchange tube 100, and at this time, the U-shaped heat exchange assemblies 200 are communicated through the first connecting member 120 to form a plurality of serpentine heat exchange tubes 100.

As shown in fig. 1, a total liquid inlet end 300 and a total liquid return end 400 are further provided, and the serpentine heat exchange component 10 is respectively communicated with the total liquid inlet end 300 and the total liquid return end 400 through the serpentine heat exchange tube 100, and the serpentine heat exchange component 10 is respectively communicated with the total liquid inlet end 300 and the total liquid return end 400.

In the specific implementation, as shown in fig. 1-2, the serpentine heat exchange component 10 is further provided with a plurality of second connectors 220, and two adjacent serpentine heat exchange tubes 100 are all connected through the second connectors 220 to form a serpentine heat exchange unit, and similarly, in order to make the inside of the tube at the joint between different serpentine heat exchange tubes 100 suitable for liquid flow, the second connectors 220 are specifically elbow connectors, the serpentine heat exchange units are all provided with a liquid separating inlet and a liquid separating return inlet, the liquid separating inlet is all communicated with the total liquid inlet 300, and the liquid separating return inlet is all communicated with the total liquid return end 400.

In particular, as shown in fig. 3, two circulation ports of adjacent serpentine heat exchange tubes 100 located on the same side are connected by using the second connecting piece 220, so that two serpentine heat exchange tubes 100 in each serpentine heat exchange unit are all connected on the U-shaped heat exchange assembly 200 on the same side, in other words, the second connecting piece 220 is all arranged on the same side, and opposite to each other, the liquid separating outlet and the liquid separating return port of the serpentine heat exchange unit are all located on the other side opposite to the second connecting piece 220, so that the connection line between the total liquid inlet 300 and the total liquid return 400 is simplified, and the overall structural complexity of the serpentine heat exchange component 10 is reduced. In addition, in a specific application, as shown in fig. 4, the total liquid inlet end 300 is communicated with the inlet of one serpentine heat exchange tube through one liquid inlet tube 130, the total liquid return end 400 is communicated with the outlet of one serpentine heat exchange tube through one liquid return tube 140, at this time, the high-temperature working medium flowing into the serpentine heat exchange unit from the total liquid inlet end 300 flows out to the total liquid return end 400 after flowing through the lengths of the flow channels of the two serpentine heat exchange tubes, so that the heat exchange time and heat exchange area of the high-temperature working medium flowing through the serpentine heat exchange tube 100 and external cooling water can be increased, and the heat exchange efficiency can be improved.

In other embodiments, the circulation ports at two ends of each serpentine heat exchange tube 100 may be respectively connected to the total liquid inlet 300 and the total liquid return 400, at this time, one serpentine heat exchange tube 100 corresponds to one heat exchange unit, and the high-temperature working medium flowing in by the total liquid inlet 300 flows out from the total liquid return 400 after being cooled by the circulation path of one serpentine heat exchange tube 100, in which the total liquid inlet 300 and the total liquid return 400 are respectively disposed at two sides of the serpentine heat exchange tube 100, it is understood that when the split liquid inlet is connected to the total liquid inlet 300 by the liquid inlet 130, and the split liquid return port is connected to the total liquid return 400 by the liquid return 140, the embodiment is convenient for providing a more abundant space layout of the liquid inlet 130 and the liquid return 140.

In particular, the first connecting pieces 120 at the bottom of the serpentine heat exchange component 10 are light pipe pieces, and no cooling fin is provided, so that the cooling water flowing downwards through the liquid channel 230 is discharged and falls into the bottom of the heat exchanger smoothly.

As shown in fig. 1, the positions of the total liquid inlet end 300 and the total liquid return end 400 are all above the highest point of the U-shaped heat exchange tube. In particular embodiments, the total fluid inlet 300 may employ a first header, and the total fluid return 400 may employ a second header, where both the first header and the second header have a certain extension length, so as to meet the requirements of providing a plurality of fluid inlet tubes 130 and a plurality of fluid return tubes 140.

When the cooling medium flows out of the total liquid return end 400 through the heat exchange of the coiled pipe heat exchange component 10, the total liquid return end 400 is higher than the highest point of the U-shaped heat exchange pipe, so that the effect of automatically evacuating the coiled heat exchange pipe 100 can be achieved, the coiled heat exchange pipe 100 is fully filled with the medium, the utilization rate of the coiled heat exchange pipe 100 is improved, the circulation process of the medium is efficient and smooth, and the heat exchange efficiency is improved. In specific implementation, the total liquid inlet end 300 is a first header, the total liquid return end 400 is a second header, the liquid inlet ports are all communicated with the total liquid inlet end 300 through the liquid inlet pipes 130, the liquid return ports are all communicated with the total liquid return end 400 through the liquid return pipes 140, and the first header and the second header have certain extension lengths, so that orderly interval arrangement and parallel interval between the liquid inlet pipes 130 and the liquid return pipes 140 can be carried out, and the liquid inlet pipes 130 and the liquid return pipes 140 communicated with different serpentine heat exchange units have consistent flow channel lengths, so that the overall heat exchange of the serpentine heat exchange component 10 is uniform.

In a preferred embodiment, as shown in fig. 1, the total liquid return end 400 is higher than the total liquid inlet end 300, so that the high-temperature working medium flowing in the coiled pipe can be well emptied, and the working medium conveying process is smooth.

In addition, in the concrete implementation, the inner wall of the U-shaped tube 110 is provided with an internal thread structure, and the processing of the internal thread tube can be adopted, so that the contact area between the working medium and the inside of the U-shaped tube 110 is increased, and the heat exchange efficiency is improved.

As shown in fig. 3 to 8, the serpentine tube heat exchanger further comprises a fixed frame 500, and the serpentine tube heat exchange part 10 is provided inside the fixed frame 500, wherein the openings of the U-shaped tubes 110 are all directed to the bottom of the fixed frame 500, and the top of the fixed frame 500 is communicated with the outside.

In a specific application, the fixing frame 500 can improve the installation stability of the serpentine heat exchange component 10, and has a protection effect on the serpentine heat exchange component 10, and spray water flows into the serpentine heat exchange component 10 through the top of the fixing frame 500 and flows through the liquid channel 230 from top to bottom to perform efficient heat exchange on the high-temperature working medium flowing through the U-shaped tube 110. In particular, the coil heat exchange component 10 is integrally formed into a rectangular space, and the fixing frame 500 includes at least a first fixing plate, a second fixing plate, a third fixing plate and a fourth fixing plate, where the first fixing plate, the second fixing plate, the third fixing plate and the fourth fixing plate are connected along the periphery to form the rectangular space, so that the coil heat exchange component 10 is enclosed and formed into protection.

As shown in fig. 3 and 7, a flow equalizing water tray 600 is further provided, the flow equalizing water tray 600 is arranged on the top of the fixed frame 500 in a matching manner, the flow equalizing water tray 600 is provided with a plurality of first liquid through holes 610, and the positions of the first liquid through holes 610 correspond to the arc-shaped top of the U-shaped cooling fins 210.

In operation, the spray water flows into the arc-shaped top of the corresponding U-shaped cooling fin 210 through the first liquid passing holes 610 in an aligned manner, and as the liquid passing channels 230 are arranged on the surfaces of the U-shaped heat exchange assemblies 200 on two sides of the arc-shaped top of the U-shaped cooling fin 210 in a one-to-one opposite manner, the spray water led in by the first liquid passing holes 610 flows through the two corresponding liquid passing channels 230 from top to bottom after passing through the arc-shaped top, so that a continuous liquid film is formed, and efficient heat exchange is achieved for the U-shaped tubes 110 on two sides of the liquid passing channels 230.

In a preferred embodiment, the current equalizing water tray 600 is further provided with a plurality of second liquid passing holes 620, and the positions of the second liquid passing holes 620 correspond to the arc-shaped top of the U-shaped tube 110.

When the U-shaped pipe 110 is in operation, spray water flowing into the second liquid passing holes 620 is aligned to the arc-shaped top of the U-shaped pipe 110, and then is respectively conveyed from top to bottom through the two straight pipes of the U-shaped pipe 110, so that a continuous liquid film can be formed on the two straight pipes of each U-shaped pipe 110, and the heat exchange efficiency of high-temperature media flowing in the U-shaped straight pipes is improved.

In particular, the current equalizing water tray 600 is further provided with a plurality of through hole mounting positions, and the liquid inlet pipe 130 and the liquid outlet pipe extend out of the fixing frame 500 through the through hole mounting positions and are communicated with the first header and the second header. In order to recover or post-treat the shower water after heat exchange as necessary, a water tank or PVC packing may be provided at the bottom of the serpentine heat exchange unit 10.

Referring to fig. 1-8, the serpentine heat exchange tube 100 of the present utility model has the following specific application processes:

The high-temperature working medium is conveyed to each serpentine heat exchange unit from the first header, the high-temperature working medium flows through tube passes of the two serpentine heat exchange tubes 100 of the serpentine heat exchange units and finally is output to the second header, when the high-temperature working medium is cooled, external cooling water passes through the flow equalizing water tray 600 above the serpentine heat exchange component 10, water columns are uniformly distributed through the first liquid passing holes 610 and the second liquid passing holes 620, flows downwards by gravity and is guided to the top elbow of the U-shaped heat exchange component, water films can be formed to flow downwards along the outer tube walls of the U-shaped tubes 110 and the liquid passing channels 230 from top to bottom after passing through the flow equalizing water tray 600, the U-shaped tubes 110 are tightly combined with the U-shaped cooling fins 210, so that the heat exchange area is increased, and the water films flowing through the liquid passing through the liquid channels 230 are fully contacted with the outer tube walls of the U-shaped tubes 110 and the U-shaped cooling fins 210, and efficient heat exchange is realized.

Compared with the prior art, the serpentine tube heat exchanger has the following advantages:

First, the cooling water falls to the elbow of the U-shaped heat exchange assembly 200 through the flow equalizing water tray 600, and the cooling fluid forms a continuous water film along the surfaces of the heat radiating fins and the serpentine pipes, and is subject to gravity to flow downwards stably. According to the structural design, the phenomenon that when the cooling water is sprayed to sweep the heat exchange tube at present, impact and splashing are caused is effectively avoided, so that the spraying water cannot form a complete continuous water film, the heat exchange tube below the heat exchanger cannot be contacted with the cooling water to exchange heat under severe conditions, and the heat exchange effect of the whole heat exchanger is reduced. Secondly, the cooling water can flow along the liquid passing channel 230 between the heat exchange pipes, and simultaneously flow along the pipe wall of the coiled pipe, no convex barrier exists in the whole flowing process, water flow can be guided to form a complete continuous water film, spray water is prevented from impacting and splashing, and the heat exchange effect of the whole coiled pipe heat exchange component 10 can be effectively enhanced. In addition, the U-shaped heat exchange component 200 is formed by combining the U-shaped pipes 110 and the U-shaped radiating fins 210, the heat exchange area of the whole serpentine heat exchange component 10 is effectively improved, and compared with the light pipe heat exchange of the existing spray type serpentine heat exchanger, the heat exchange area of the novel evaporative cooling serpentine heat exchange component 10 is greatly improved, and the heat exchange quantity is remarkably improved.

It should be understood that the foregoing examples of the present utility model are merely illustrative of the present utility model and are not intended to limit the present utility model to the specific embodiments thereof. Any modification, equivalent replacement, improvement, etc. that comes within the spirit and principle of the claims of the present utility model should be included in the protection scope of the claims of the present utility model.

Claims (10)

1. The heat exchange device for the evaporative cooling is characterized by comprising a plurality of U-shaped heat exchange assemblies, wherein the U-shaped heat exchange assemblies are arranged at intervals along the width direction and are parallel to each other, each U-shaped heat exchange assembly comprises a plurality of U-shaped pipes and a plurality of U-shaped cooling fins, the U-shaped pipes are arranged at intervals along the length direction of the U-shaped heat exchange assembly and are parallel to each other, U-shaped through surfaces formed by the width and the height of each U-shaped pipe are perpendicular to the length direction of the corresponding U-shaped heat exchange assembly, the U-shaped pipes on the same U-shaped heat exchange assembly are sequentially connected through the U-shaped cooling fins, so that liquid passing channels are formed among the U-shaped straight pipes, and the through directions of the liquid passing channels are consistent with the height directions of the U-shaped pipes; the U-shaped heat exchange tubes are sequentially connected with one another to form a serpentine heat exchange tube, wherein the U-shaped tubes are located on different U-shaped heat exchange assemblies and correspond to one another one by one.

2. The evaporative cooling heat exchange device of claim 1, further comprising a total liquid inlet end and a total liquid return end, wherein the U-shaped heat exchange assemblies are all communicated with the total liquid inlet end and the total liquid return end through the serpentine heat exchange tubes.

3. The evaporative cooling heat exchange device according to claim 2, further comprising a plurality of second connecting pieces, wherein every two adjacent serpentine heat exchange tubes are all communicated through the second connecting pieces to form a serpentine heat exchange unit, each serpentine heat exchange unit is provided with a liquid separating inlet and a liquid separating return inlet, each liquid separating inlet is communicated with the total liquid inlet, and each liquid separating return inlet is communicated with the total liquid return end.

4. The evaporative cooling heat exchange device according to claim 3, wherein the split liquid inlet and the split liquid return inlet are both provided on the U-shaped heat exchange assembly on one side thereof.

5. An evaporative cooling heat exchange apparatus according to any one of claims 2 to 4 wherein the positions of the total liquid inlet and return ends are located above the highest point of the U-shaped heat exchange assembly.

6. An evaporative cooling heat exchange apparatus according to any one of claims 1 to 4 wherein the inner walls of the U-shaped tubes are each provided with a screw thread structure.

7. The evaporative cooler heat exchange apparatus as set forth in claim 1 further comprising a stationary frame, said U-shaped heat exchange assemblies being disposed within said stationary frame, wherein said U-shaped tubes each have an opening facing the bottom of said stationary frame and the top of said stationary frame is in communication with the outside.

8. An evaporative cooling heat exchange apparatus according to any one of claims 1 to 4 and 7 further comprising flow equalization means for directing cooling medium to the liquid passage.

9. The evaporative cooling heat exchange device according to claim 8, wherein the flow equalization device is a flow equalization water tray, the flow equalization water tray is arranged above the U-shaped heat exchange assembly, the flow equalization water tray is provided with a plurality of first liquid through holes, and the positions of the first liquid through holes are corresponding to the arc-shaped top parts of the U-shaped cooling fins.

10. The evaporative cooling heat exchange device according to claim 9, wherein the flow equalizing water tray is further provided with a plurality of second liquid passing holes, and the positions of the second liquid passing holes are corresponding to the arc-shaped top parts of the U-shaped tubes.