Evaporative cooling packing combined heat exchanger

Abstract

The application provides an evaporative cooling packing composite heat exchanger, unit packing pieces are divided into first packing pieces and second packing pieces which are mirror images of each other, first channels and second channels of the packing combination are cross scaling elliptical tubes, the center of the connecting edge of the packing piece is provided with a hollow triangular column bonding structure, a plurality of unit packing pieces are staggered and stacked through the hollow triangular column bonding structure, the top of the packing is provided with a hollow elliptical hole baffle, the hollow elliptical hole baffle is flush with the top of third elliptical tubes and fourth elliptical tubes, and the top layer of the third channel to the hollow elliptical hole baffle constitutes a ventilation layer. The application strengthens the evaporative cooling in the device, enhances the uniformity of the water film, reduces the ventilation resistance, enhances the anti-fouling property of the packing, thereby improving the cooling efficiency and reducing the operation energy consumption and maintenance cost of the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of evaporative cooling, in particular to an evaporative cooling filler composite heat exchanger. BACKGROUND

[0002] Evaporative cooling is divided into direct evaporative cooling and indirect evaporative cooling according to whether air and water are in direct contact. In essence, direct evaporative cooling is the basis of evaporative cooling application, while indirect evaporative cooling is the core and key of evaporative cooling application.

[0003] Filler is the core component of direct evaporative cooling technology application, which uniformly disperses water into water film and fine water droplets in space, reduces or disturbs fluid laminar bottom layer, increases and prolongs the heat and mass exchange area and action time of air-water two-phase, so as to realize efficient heat and mass exchange. Therefore, reasonable selection of filler, optimization of filler structure and improvement of its thermal performance are crucial to direct evaporative cooling technology.

[0004] Unlike conventional refrigeration large temperature difference heat transfer, the heat transfer temperature difference of evaporative cooling is relatively small. Under the same heat transfer conditions, the required heat transfer area is large, the size is large, the cold production per unit volume is low, which seriously restricts its application. The existing filler usually has the defects of small specific surface area of filler, poor heat transfer performance, poor water film uniformity, large ventilation resistance, poor dirt resistance and the like, which further affects the working effect of the evaporative cooling device. SUMMARY

[0005] The purpose of the present application is to provide an evaporative cooling filler composite heat exchanger, which changes the structure of the filler, optimizes the filler scheme, constructs the filler internal structure of longitudinal vortex plate staggered layer, strengthens the evaporative cooling in the device, enhances the water film uniformity, reduces the ventilation resistance, enhances the dirt resistance of the filler, thereby improves the cooling efficiency, reduces the operation energy consumption and maintenance cost of the device.

[0006] The technical scheme of the present application is: an evaporative cooling filler composite heat exchanger is divided into a first filler sheet and a second filler sheet; the first filler sheet and the second filler sheet are mirror image structures, and are collectively referred to as unit filler sheets; the unit filler sheet as a whole is rectangular, the length of the length side is 980 mm, and the length of the width side is 500 mm; the unit filler sheet is divided into a first half layer and a second half layer; the first half layer and the second half layer are collectively referred to as a unit half layer, and the unit half layer length side is provided with 7 first half-elliptical channels and 7 second half-elliptical channels arranged in a cross pattern; the first half-elliptical channel longitudinally crosses one first half-elliptical pipe, two second half-elliptical pipes and one third half-elliptical pipe, and the second half-elliptical channel longitudinally crosses two first half-elliptical pipes, one second half-elliptical pipe and one fourth half-elliptical pipe; the first half-elliptical pipe, the second half-elliptical pipe, the third half-elliptical pipe and the fourth half-elliptical pipe in the first half layer of the unit filler sheet are tangent to the second half-elliptical pipe, the first half-elliptical pipe, the fourth half-elliptical pipe and the third half-elliptical pipe in the second half layer respectively; the first half-elliptical pipe cross-sectional shape of the first half-elliptical channel and the second half-elliptical channel of the unit filler sheet is half-elliptical, the half-elliptical wave height is 25 mm, the half-elliptical wave width is 35 mm, and the half-elliptical segment length is 115 mm; the second half-elliptical pipe cross-sectional shape of the first half-elliptical channel and the second half-elliptical channel of the unit filler sheet is half-elliptical, the half-elliptical wave height is 35 mm, the half-elliptical wave width is 25 mm, and the half-elliptical segment length is 115 mm; the first half-elliptical pipe and the second half-elliptical pipe in the first half-elliptical channel and the second half-elliptical channel are at an angle of 90° with each other, the first half-elliptical pipe and the second half-elliptical pipe are connected by a transition section, and the transition section is 25 mm long; the third half-elliptical pipe cross-sectional shape of the first half-elliptical channel of the unit filler sheet is half-elliptical, the half-elliptical wave height is 25 mm, the half-elliptical wave width is 35 mm, and the half-elliptical segment length is 800 mm; the second half-elliptical pipe and the third half-elliptical pipe of the first half-elliptical channel are at an angle of 90° with each other, and the second half-elliptical pipe and the third half-elliptical pipe are connected by a transition section, and the transition section is 25 mm long; the fourth half-elliptical pipe cross-sectional shape of the second half-elliptical channel of the unit filler sheet is half-elliptical, the half-elliptical wave height is 35 mm, the half-elliptical wave width is 25 mm, and the half-elliptical segment length is 800 mm; the first half-elliptical pipe and the fourth half-elliptical pipe of the second half-elliptical channel are at an angle of 90° with each other, and the first half-elliptical pipe and the fourth half-elliptical pipe are connected by a transition section, and the transition section is 25 mm long; the first half-elliptical pipe and the second half-elliptical pipe in the first half-elliptical channel of the same unit half layer are connected to the adjacent second half-elliptical pipe and the first half-elliptical pipe in the adjacent second half-elliptical channel by a 10 mm wide connecting side; the center of the connecting side is provided with a hollow triangular column bonding structure, and multiple unit filler sheets are staggered and stacked through the above hollow triangular column bonding structure.

[0007] The first half-elliptical channels adjacent to each other of the multiple-piece unit filler sheet and the first half-elliptical channels and the second half-elliptical channels are engaged to form a first channel and a second channel respectively; the first channel, the second channel and the connecting edge are combined to form a third channel; the first half-elliptical tubes adjacent to each other of the first filler sheet and the second filler sheet and the first half-elliptical tubes, the second half-elliptical tubes, the third half-elliptical tubes and the fourth half-elliptical tubes are engaged to form a first elliptical tube, a second elliptical tube, a third elliptical tube and a fourth elliptical tube respectively; the first channel has a length of 500 mm, the second channel has a length of 500 mm, the third channel has a length of 395 mm, the first channel, the second channel and the third channel are arranged along a vertical direction, the first channel and the second channel pass through water and air, and the third channel passes through air; the cross-sectional areas of the first channel, the second channel and the third channel are substantially constant, so that the ventilation resistance of the first channel, the second channel and the third channel can be reduced; the first elliptical tube, the second elliptical tube, the third elliptical tube and the fourth elliptical tube on the inner wall of the first channel and the second channel are coated with a 100-μm-thick nano-hydrophilic heat-conducting coating; the filler top is provided with a hollow elliptical hole baffle, the hollow elliptical hole baffle is flush with the top of the third elliptical tube and the fourth elliptical tube, the top of the third elliptical tube and the top of the fourth elliptical tube are respectively the same in size as and exactly fit into the first hollow ellipse and the second hollow ellipse of the reserved hollow elliptical holes of the hollow elliptical hole baffle, and the top layer of the third channel to the hollow elliptical hole baffle forms a ventilation layer; the air flowing through the third channel enters the ventilation layer, the first channel and the second channel pass through the ventilation layer, the top of the third elliptical tube and the top of the fourth elliptical tube are directly connected with the atmosphere, and the height of the ventilation layer is 105 mm.

[0008] Preferably, the cross-sectional shape of the first elliptical tube, the second elliptical tube, the third elliptical tube and the fourth elliptical tube is elliptical, the short axis of the ellipse is 50 mm, the long axis of the ellipse is 70 mm, the transition section is 25 mm long, the first elliptical tube and the second elliptical tube are 115 mm long, and the third elliptical tube and the fourth elliptical tube are 80 mm long.

[0009] Preferably, the inner wall of the first elliptical tube, the second elliptical tube, the third elliptical tube and the fourth elliptical tube is coated with a 100-μm-thick nano-hydrophilic heat-conducting coating.

[0010] Preferably, the third channel is connected with the ventilation layer, and the front and rear sides of the ventilation layer are connected with the atmosphere.

[0011] Preferably, the hollow triangular column bonding structure is located at the center of the connecting edge, the bottom surface of the hollow triangular column is an equilateral triangle with a side length of 8 mm, the height of the hollow triangular column is 6 mm, and the adjacent first filler sheet and second filler sheet are cross arranged and staggered in layers through the above-mentioned hollow triangular column bonding structure.

[0012] Compared with the prior art, the beneficial effects of the present application are that: the evaporative cooling filler composite heat exchanger utilizes direct evaporative cooling in the first channel and the second channel, and strengthens evaporative cooling in the evaporative cooling equipment through wall heat exchange between the first channel, the second channel and the third channel respectively, the cross scaling elliptical pipe formed by the filler can enhance the water film uniformity and the anti-fouling property of the filler by inducing longitudinal vortex flow and impact wall flow, and the cross-sectional areas of the first channel, the second channel and the third channel are basically the same, which can reduce the ventilation resistance of the channel, and further improve the overall heat exchange effect and the anti-fouling property of the evaporative cooling filler composite heat exchanger. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Figure 1 A first filler sheet monomer front view of the evaporative cooling filler composite heat exchanger provided by the embodiment of the present application;

[0015] Figure 2 A second filler sheet monomer front view of the evaporative cooling filler composite heat exchanger provided by the embodiment of the present application;

[0016] Figure 3 A first filler sheet monomer rear view of the evaporative cooling filler composite heat exchanger provided by the embodiment of the present application;

[0017] Figure 4 A first filler sheet monomer left view of the evaporative cooling filler composite heat exchanger provided by the embodiment of the present application;

[0018] Figure 5 A first filler sheet monomer right view of the evaporative cooling filler composite heat exchanger provided by the embodiment of the present application;

[0019] Figure 6 A first filler sheet monomer bottom view of the evaporative cooling filler composite heat exchanger provided by the embodiment of the present application;

[0020] Figure 7 A first filler sheet monomer top view of the evaporative cooling filler composite heat exchanger provided by the embodiment of the present application;

[0021] Figure 8 An enlarged schematic view of a hollow triangular column bonding structure of the evaporative cooling filler composite heat exchanger provided by the embodiment of the present application;

[0022] Figure 9The whole structure schematic diagram of the evaporative cooling packing combined heat exchanger provided by the embodiment of the present application is shown in the figure.

[0023] Figure 10 The overhead view of the evaporative cooling packing combined heat exchanger provided by the embodiment of the present application is shown in the figure.

[0024] Figure 11 The schematic diagram of the hollow elliptical hole baffle provided by the embodiment of the present application is shown in the figure.

[0025] Figure 12 The whole structure schematic diagram of the evaporative cooling packing combined heat exchanger provided by the embodiment of the present application is shown in the figure.

[0026] In the figure, each reference numeral represents: unit packing sheet 1, first packing sheet 1-1, second packing sheet 1-2, unit half layer 2, first half layer 2-1, second half layer 2-2, first half-elliptical channel 3, second half-elliptical channel 4, first half-elliptical tube 5, second half-elliptical tube 6, third half-elliptical tube 7, fourth half-elliptical tube 8, transition section 9, connecting edge 10, hollow triangular column bonding structure 11, first channel 12, second channel 13, third channel 14, first elliptical tube 15, second elliptical tube 16, third elliptical tube 17, fourth elliptical tube 18, nano hydrophilic heat-conducting coating 19, hollow elliptical hole baffle 20, hollow elliptical hole 21, first hollow elliptical hole 21-1, second hollow elliptical hole 21-2, ventilation layer 22, fan 23. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0028] In addition, in the description of the embodiments of the present application, it should be understood that the orientations or positional relationships indicated by the terms “length”, “width”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0029] The terms "first", "second", "third", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or a specific number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0030] In the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0031] Embodiment 1

[0032] The present application provides an evaporative cooling packing combined heat exchanger, which comprises Figures 1 to 7As shown, an evaporative cooling filler composite heat exchanger is divided into a first filler sheet 1-1 and a second filler sheet 1-2; the first filler sheet 1-1 and the second filler sheet 1-2 are mirror image structures, collectively referred to as a unit filler sheet 1; the unit filler sheet 1 is a whole rectangle, the length of the length side is 980 mm, the length of the width side is 500 mm, and is divided into a first half layer 2-1 and a second half layer 2-2, collectively referred to as a unit half layer 2; the unit half layer 2 is provided with 7 first half-elliptical channels 3 and 7 second half-elliptical channels 4 arranged in a cross pattern at equal distances on the length side; the first half-elliptical channel 3 is longitudinally arranged with one first half-elliptical tube 5, two second half-elliptical tubes 6, and one third half-elliptical tube 7, and the second half-elliptical channel 4 is longitudinally arranged with two first half-elliptical tubes 5, one second half-elliptical tube 6, and one fourth half-elliptical tube 8; the first half-elliptical tube 5, the second half-elliptical tube 6, the third half-elliptical tube 7, and the fourth half-elliptical tube 8 in the first half layer 2-1 of the unit filler sheet 1 are tangent to the second half-elliptical tube 6, the first half-elliptical tube 5, the fourth half-elliptical tube 8, and the third half-elliptical tube 7 in the second half layer 2-2; the first half-elliptical tube 5 of the first half-elliptical channel 3 and the second half-elliptical channel 4 of the unit filler sheet 1 has a half-elliptical cross-sectional shape, a half-elliptical wave height of 25 mm, a half-elliptical wave width of 35 mm, and a half-elliptical segment length of 115 mm; the second half-elliptical tube 6 of the first half-elliptical channel 3 and the second half-elliptical channel 4 of the unit filler sheet 1 has a half-elliptical cross-sectional shape, a half-elliptical wave height of 35 mm, a half-elliptical wave width of 25 mm, and a half-elliptical segment length of 115 mm; the first half-elliptical tube 5 and the second half-elliptical tube 6 in the first half-elliptical channel 3 and the second half-elliptical channel 4 are at a 90° angle with each other, the first half-elliptical tube 5 and the second half-elliptical tube 6 are connected by a transition section 9, and the transition section 9 is 25 mm long.

[0033] The third semi-elliptical tube 7 of the first semi-elliptical channel 3 of the unit filler sheet 1 has a semi-elliptical cross-sectional shape, a semi-elliptical wave height of 25 mm, a semi-elliptical wave width of 35 mm, and a semi-elliptical segment length of 800 mm; the second semi-elliptical tube 6 and the third semi-elliptical tube 7 of the first semi-elliptical channel 3 are at an angle of 90° with respect to each other, and the second semi-elliptical tube 6 and the third semi-elliptical tube 7 are connected by a transition section 9, and the transition section 9 has a length of 25 mm; the fourth semi-elliptical tube 8 of the second semi-elliptical channel 4 of the unit filler sheet 1 has a semi-elliptical cross-sectional shape, a semi-elliptical wave height of 35 mm, a semi-elliptical wave width of 25 mm, and a semi-elliptical segment length of 800 mm; the first semi-elliptical tube 5 and the fourth semi-elliptical tube 8 of the second semi-elliptical channel 4 are at an angle of 90° with respect to each other, and the first semi-elliptical tube 5 and the fourth semi-elliptical tube 8 are connected by a transition section 9, and the transition section 9 has a length of 25 mm; the first semi-elliptical tube 5 and the second semi-elliptical tube 6 of the first semi-elliptical channel 3 and the second semi-elliptical channel 4 adjacent to each other of the same unit half layer 2 are connected by a connecting edge 10 with a length of 10 mm; the center of the connecting edge 10 is provided with a hollow triangular column bonding structure 11, and a plurality of unit filler sheets 1 are staggered and stacked through the hollow triangular column bonding structure 11.

[0034] The first semi-elliptical channel 3 and the first semi-elliptical channel 3, the second semi-elliptical channel 4 and the second semi-elliptical channel 4 of the adjacent plurality of unit filler sheets 1 are engaged with each other to form a first channel 12 and a second channel 13; the first channel 12, the second channel 13, and the connecting edge 10 are combined to form a third channel 14; the first semi-elliptical tube 5, the second semi-elliptical tube 6, the third semi-elliptical tube 7, and the fourth semi-elliptical tube 8 of the first filler sheet 1-1 and the second filler sheet 1-2 are engaged with each other to form a first elliptical tube 15, a second elliptical tube 16, a third elliptical tube 17, and a fourth elliptical tube 18; the first channel 12 has a length of 420 mm, the second channel 13 has a length of 500 mm, and the third channel 14 has a length of 420 mm; the first channel 12, the second channel 13, and the third channel 14 are arranged in a vertical direction; the first channel 12 and the second channel 13 pass through water and air, and the third channel 14 passes through air.

[0035] Example 2

[0036] As Figure 8As shown in the enlarged schematic view of the hollow triangular column bonding structure of the evaporative cooling packing combined heat exchanger, the first half-elliptical channel 3 adjacent to the unit packing sheet 1 and the first half-elliptical tube 5 adjacent to the second half-elliptical channel 4 are connected by a connecting edge 10 of 10 mm; the center of the connecting edge 10 is provided with a hollow triangular column bonding structure 11, the bottom surface of the hollow triangular column of the hollow triangular column bonding structure 11 is an equilateral triangle with a side length of 8 mm, the height of the hollow triangular column is 6 mm, and the first packing sheet 1-1 and the second packing sheet 1-2 are cross arranged and staggered by the above-mentioned hollow triangular column bonding structure 11.

[0037] Example 3

[0038] As shown in the enlarged schematic view of the hollow triangular column bonding structure of the evaporative cooling packing combined heat exchanger, the first half-elliptical channel 3 adjacent to the unit packing sheet 1 and the first half-elliptical tube 5 adjacent to the second half-elliptical channel 4 are connected by a connecting edge 10 of 10 mm; the center of the connecting edge 10 is provided with a hollow triangular column bonding structure 11, the bottom surface of the hollow triangular column of the hollow triangular column bonding structure 11 is an equilateral triangle with a side length of 8 mm, the height of the hollow triangular column is 6 mm, and the first packing sheet 1-1 and the second packing sheet 1-2 are cross arranged and staggered by the above-mentioned hollow triangular column bonding structure 11. Figures 8 to 12 As shown in the enlarged schematic view of the hollow triangular column bonding structure of the evaporative cooling packing combined heat exchanger, the first half-elliptical channel 3 adjacent to the unit packing sheet 1 and the first half-elliptical tube 5 adjacent to the second half-elliptical channel 4 are connected by a connecting edge 10 of 10 mm; the center of the connecting edge 10 is provided with a hollow triangular column bonding structure 11, the bottom surface of the hollow triangular column of the hollow triangular column bonding structure 11 is an equilateral triangle with a side length of 8 mm, the height of the hollow triangular column is 6 mm, and the first packing sheet 1-1 and the second packing sheet 1-2 are cross arranged and staggered by the above-mentioned hollow triangular column bonding structure 11.

[0039] Specifically, the size of the hollow elliptical hole baffle 20 can be determined according to the number of specific unit packing sheets 1, and specifically, when the packing combination is 15 pieces, the length of the hollow elliptical hole baffle 20 is 780 mm and the width is 980 mm; when the packing combination is 30 pieces, the length of the hollow elliptical hole baffle 20 is 1800 mm and the width is 980 mm.

[0040] Example 4

[0041] As shown in the enlarged schematic view of the hollow triangular column bonding structure of the evaporative cooling packing combined heat exchanger, the first half-elliptical channel 3 adjacent to the unit packing sheet 1 and the first half-elliptical tube 5 adjacent to the second half-elliptical channel 4 are connected by a connecting edge 10 of 10 mm; the center of the connecting edge 10 is provided with a hollow triangular column bonding structure 11, the bottom surface of the hollow triangular column of the hollow triangular column bonding structure 11 is an equilateral triangle with a side length of 8 mm, the height of the hollow triangular column is 6 mm, and the first packing sheet 1-1 and the second packing sheet 1-2 are cross arranged and staggered by the above-mentioned hollow triangular column bonding structure 11. Figures 8 to 12As shown, the fan 23 blows air from below the filler, the air enters the first channel 12, the second channel 13, the third channel 14, and the spray water is sprayed above the filler, the spray water enters the first channel 12, the second channel 13 through the top of the first channel 12, the second channel 13, the spray water in the first channel 12, the second channel 13 is in countercurrent contact with the air, the spray water is evaporated and exchanges heat with the air, the spray water carries away the heat of the air, the first channel 12, the second channel 13 formed by the cross-shrinkage elliptical tube makes the spray water form a transverse vortex in the first channel 12, the second channel 13 to strengthen the heat transfer between the walls, the spray water in the first channel 12, the second channel 13 washes the pipe wall to form good anti-fouling property, and the cross-sectional area of the first channel 12, the second channel 13, the third channel 14 is basically unchanged, which can reduce the ventilation resistance of the first channel 12, the second channel 13, the third channel 14, the inner wall of the first elliptical tube 15, the second elliptical tube 16, the third elliptical tube 17, the fourth elliptical tube 18 is coated with a 100μm thick nano-hydrophilic heat-conducting coating 19, which makes the water film uniformly cover the pipe wall surface, reduces the water film thickness, and improves the heat transfer performance between the walls. The specific nano-hydrophilic heat-conducting coating 19 can be a nano-composite material of Ag / CNTs and Ag / rGO, or other hydrophilic heat-conducting materials can be used instead.

[0042] Part of the air enters the third channel 14, and the air in the third channel 14 exchanges heat with the spray water in the first channel 12, the second channel 13 in countercurrent; the air entering the ventilation layer 22 from the third channel 13 exchanges heat with the spray water in the third elliptical tube 17 of the first channel 12 and the fourth elliptical tube 18 of the second channel 13 in a cross manner, the spray water further reduces the temperature of the air in the first channel 12, the second channel 13 and thus strengthens the efficiency of the evaporative cooling equipment, and the air passing through the third channel 14 enters the ventilation layer 22.

[0043] The above is only the technical solution of the present application, not a limitation, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solution described in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An evaporative cooling filler composite heat exchanger, characterized by: The unit packing sheet (1) is divided into a first packing sheet (1-1) and a second packing sheet (1-2). The first packing sheet (1-1) and the second packing sheet (1-2) are mirror images of each other. The unit packing sheet (1) is rectangular as a whole, with a length of 980 mm on the length side and a length of 500 mm on the width side. The unit packing sheet (1) is divided into a first half layer (2-1) and a second half layer (2-2). The first half layer (2-1) and the second half layer (2-2) are unit half layers (2). The length side of the unit half layer (2) is provided with a first semi-elliptical channel (3) and a second semi-elliptical channel (4) arranged crosswise. The first semi-elliptical channel (3) is longitudinally crosswise arranged with a first semi-elliptical tube (5) and two second semi-elliptical tubes (5). The first semi-elliptical tube (6), the second semi-elliptical tube (7), and the second semi-elliptical channel (4) are longitudinally arranged in a cross-sectional manner. The first semi-elliptical tube (5), the second semi-elliptical tube (6), the third semi-elliptical tube (7), and the fourth semi-elliptical tube (8) in the first half layer (2-1) of the unit filler sheet (1) are tangent to the second semi-elliptical tube (6), the first semi-elliptical tube (5), the fourth semi-elliptical tube (8), and the third semi-elliptical tube (7) in the second half layer (2-2) respectively. The first semi-elliptical channel (3) adjacent to the second semi-elliptical channel (4) in the same unit half layer (2) is tangent to the first semi-elliptical tube (5) adjacent to the second semi-elliptical channel (4) The second semi-elliptical tube (6) is connected by a 10 mm connecting edge (10), and a hollow triangular column bonding structure (11) is provided at the center of the connecting edge (10). Multiple unit filler sheets (1) are staggered and stacked through the above hollow triangular column bonding structure (11). The first elliptical tube (15) and the second elliptical tube (16) are connected by a transition section (9) and are perpendicular to each other. The second elliptical tube (16) and the third elliptical tube (17) are connected by a transition section (9) and are perpendicular to each other. The first elliptical tube (15) and the fourth elliptical tube (18) are connected by a transition section (9) and are perpendicular to each other. The first channel (12), the second channel (13), and the third channel (14) are arranged in a vertical direction. A hollow elliptical hole block is provided on the top of the filler. Plate (20), the hollow elliptical hole baffle (20) is flush with the top of the third elliptical tube (17) and the fourth elliptical tube (18), the top of the third elliptical tube (17) and the fourth elliptical tube (18) are respectively the same size as the first hollow ellipse (21-1) and the second hollow ellipse (21-2) of the reserved hollow elliptical hole (21) of the hollow elliptical hole baffle (20) and just fit together, the top of the third channel (14) to the hollow elliptical hole baffle (20) constitutes a ventilation layer (22), the first channel (12) and the second channel (13) pass through the ventilation layer (22), the top of the third elliptical tube (17) and the top of the fourth elliptical tube (18) are directly connected to the atmosphere, and the height of the ventilation layer (22) is 105 mm;The cross-sectional shape of the first elliptical tube (15), the second elliptical tube (16), the third elliptical tube (17), and the fourth elliptical tube (18) is an ellipse, the minor axis of the ellipse is 50 mm, the major axis is 70 mm, the transition section (9) is 25 mm long, the first elliptical tube (15), the second elliptical tube (16) is 115 mm long, the third elliptical tube (17), and the fourth elliptical tube (18) are 80 mm long; the third channel (14) is connected to the ventilation layer (22), and the front and rear sides of the ventilation layer (22) are connected to the atmosphere.

2. The evaporative cooling filler composite heat exchanger according to claim 1, characterized in that: The bottom surface of the hollow triangular prism of the hollow triangular prism bonding structure (11) is an equilateral triangle with a side length of 8 mm, and the height of the hollow triangular prism is 6 mm. The first filler sheet (1-1) and the second filler sheet (1-2) are cross-arranged and staggered through the hollow triangular prism bonding structure (11).

Images