CN107941054B - Gas-liquid heat exchanger - Google Patents

Gas-liquid heat exchanger Download PDF

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Publication number
CN107941054B
CN107941054B CN201711331359.7A CN201711331359A CN107941054B CN 107941054 B CN107941054 B CN 107941054B CN 201711331359 A CN201711331359 A CN 201711331359A CN 107941054 B CN107941054 B CN 107941054B
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China
Prior art keywords
liquid
heat exchange
gas
flow
equalizer
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CN201711331359.7A
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Chinese (zh)
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CN107941054A (en
Inventor
白本通
许军强
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Shenzhen Bojian Technology Co., Ltd
Shenzhen Yixin Technology Co., Ltd.
Original Assignee
Shenzhen Bojian Technology Co Ltd
Shenzhen Esin Technology Co ltd
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Priority to CN201711331359.7A priority Critical patent/CN107941054B/en
Publication of CN107941054A publication Critical patent/CN107941054A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F9/026Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/027Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
    • F28F9/0275Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple branch pipes

Abstract

The present invention relates to a gas-liquid heat exchange device, comprising: the device comprises a first liquid distributor, a second liquid distributor and a heat exchange assembly connected to two ends of the first liquid distributor and the second liquid distributor. The first liquid distributor is provided with a liquid inlet port, a plurality of first branch flow equalizers arranged at intervals and a first main flow equalizer connected to two ends of the first branch flow equalizers; flow equalizing plates for evenly distributing liquid are further arranged inside the first main flow equalizer and the first branch flow equalizer. The second liquid distributor is provided with a liquid outlet port and a plurality of second flow equalizers arranged at intervals; the heat exchange assembly comprises: a plurality of finned tubes distributed in an array; each finned tube includes: the liquid guide pipe and a plurality of radiating fins are connected with the liquid guide pipe and take the liquid guide pipe as axial external radiation; the extending direction of the radiating fins is consistent with the extending direction of the liquid guide pipe. The gas-liquid heat exchange device prolongs the stroke and time of unit volume gas in the heat exchange assembly, thereby increasing the time and stroke of heat exchange of gas and liquid and achieving the purpose of improving the heat exchange efficiency.

Description

Gas-liquid heat exchanger
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a gas-liquid heat exchange device which is applied to occasions with higher requirements on heat exchange efficiency, such as energy-saving transformation of a central air conditioner, high-efficiency cooling equipment of a data center and the like.
Background
A heat exchanger is a device for effecting heat transfer between two media. The gas-liquid heat exchanger is used for realizing heat transfer between gas and liquid, and is commonly used for liquid heat dissipation or air refrigeration, such as air conditioning meter cold air, automobile heat dissipation water tanks, high-temperature liquid cooling, gas-liquid exchange in chemical industry, heat recovery in the field of energy conservation, and the like. The conventional gas-liquid heat exchange device has the problem that the time and the stroke of the heat exchange between gas and liquid are insufficient, so that the heat exchange efficiency is not high. Meanwhile, the uniformity of the distribution of gas and liquid inside the equipment determines the efficiency of heat exchange, so that an efficient water distribution device and an efficient air flow channel are required to be designed to improve the efficiency of the gas-liquid exchanger.
Disclosure of Invention
Based on the above, the invention provides a gas-liquid heat exchange device, which utilizes a high-efficiency liquid distribution structure to realize the maximum uniform distribution of gas and liquid through the flow caused by the internal pressure difference, and has the advantages of small wind resistance, large heat exchange area, long time and stroke of the heat exchange between the gas and the liquid, adoption of a countercurrent heat exchange mode for the gas and the liquid, and the like, thereby achieving the purpose of improving the heat exchange efficiency.
A gas-liquid heat exchange device comprising:
a first liquid distributor; the first liquid distributor is provided with a liquid inlet port, a plurality of first branch flow equalizers arranged at intervals and a first main flow equalizer connected to two ends of the first branch flow equalizers; the liquid inlet port is communicated with the first branch flow equalizer through the first main flow equalizer; a gap between two adjacent first current equalizers is an air outlet gap; a second liquid distributor of a flow equalizing plate for uniformly distributing liquid is arranged in each of the first main flow equalizer and the first branch flow equalizer; the second liquid distributor is provided with a liquid outlet port, a plurality of second branch flow equalizers arranged at intervals and a second main flow equalizer connected with the two ends of the second branch flow equalizers; the liquid outlet port is communicated with a second branch flow equalizer through a second main flow equalizer; a gap between every two adjacent second flow equalizers is an air inlet gap; and
the heat exchange assembly is connected between the first liquid distributor and the second liquid distributor; the heat exchange assembly comprises: a plurality of finned tubes distributed in a uniform array; each finned tube includes: the liquid guide pipe and a plurality of radiating fins are connected with the liquid guide pipe and take the liquid guide pipe as axial external radiation; one end of the liquid guide pipe is communicated with the first flow equalizer; the other end of the liquid guide pipe is communicated with a second flow equalizer; the extending direction of the radiating fins is consistent with that of the liquid guide pipe; the outer contour edges of two adjacent finned tubes are arranged closely.
When the gas-liquid heat exchange device is used, liquid enters from the liquid inlet port of the first liquid distributor and then enters the first main flow equalizer, then is uniformly distributed through the flow equalizer inside the first main flow equalizer and then is distributed to the first branch flow equalizers, the liquid enters the finned tube of the heat exchange assembly after being distributed again through the flow equalizer arranged inside the first branch flow equalizers, and the liquid flows to the second liquid distributor through the liquid guide tube on the finned tube and finally is converged to the liquid outlet port through the second flow equalizer to be discharged. And gas enters from the air inlet gap of the second liquid distributor, passes through the finned tube and is discharged from the air outlet gap of the first liquid distributor, the structure that the liquid flow direction is opposite to the gas flow direction is formed, when the gas flows along the extending direction of the radiating fins on the finned tube, the gas exchanges heat with the liquid in the liquid guide tube through the radiating fins, and the extending direction of the radiating fins is consistent with that of the liquid guide tube, so that the resistance suffered by the gas during flowing can be reduced, and the energy loss of the gas flowing can be reduced. In addition, the fin is the polylith and uses the catheter to set up for the external radiation of axial for every finned tube can both provide great heat exchange area, and the gas is shunted by the fin, not only increases the contact surface of gas and finned tube, has still reduced gaseous circulation of unit area on heat exchange assembly, and the stroke and the time of unit volume gas in heat exchange assembly are prolonged, thereby increase the time and the stroke of the heat exchange of gas and liquid, in addition, the even array of finned tube distributes, more even when making gas and liquid circulate. And the outer contour edges of two adjacent finned tubes are arranged closely, so that the contact area of gas and radiating fins is larger, and the purpose of improving the heat exchange efficiency is achieved.
In one embodiment, the adjacent radiating fins on two adjacent finned tubes are mutually staggered.
In one embodiment, the first liquid distributor is also provided with a branch side pipe connected to the end part of the first main flow equalizer; the two ends of the flow dividing side pipe are communicated with the two ends of the first main flow equalizer; the liquid inlet port is connected to the shunt side pipe.
In one embodiment, the flow equalization plate is an orifice plate.
In one embodiment, the flow equalizing plate is a shutter-shaped arrangement of guide vanes.
In one embodiment, the cross section of the heat sink along the radial direction of the catheter is straight or curved.
In one embodiment, the finned tube has a cross section in the radial direction of the catheter with an outer contour of a triangle or a parallelogram or a parallel hexagon.
In one of the embodiments, the heat sink is provided with branches.
In one embodiment, the cross section of the second branch flow equalizer perpendicular to the length direction is in the shape of a bullet head protruding away from the heat exchange component.
In one embodiment, the cross section perpendicular to the length direction of the second branch flow equalizer is a triangle protruding away from the heat exchange component.
Drawings
FIG. 1 is a schematic view of a gas-liquid heat exchange device according to an embodiment of the present invention;
FIG. 2 is a schematic top view of the gas-liquid heat exchange device shown in FIG. 1;
FIG. 3 is a schematic side view of the gas-liquid heat exchange device shown in FIG. 1;
FIG. 4 is a schematic view of a finned tube in the gas-liquid heat exchange device shown in FIG. 1;
FIG. 5 is a schematic cross-sectional view of the finned tube shown in FIG. 1 taken in the radial direction of the catheter;
FIG. 6 is an enlarged schematic view of part A of the gas-liquid heat exchange device shown in FIG. 2;
FIG. 7 is a schematic cross-sectional view of one of the other embodiments of fins in the finned tube shown in FIG. 5;
FIG. 8 is a schematic cross-sectional view of a second alternative embodiment of the fins in the finned tube shown in FIG. 5;
FIG. 9 is a schematic cross-sectional view of a third alternative embodiment of the fins in the finned tube of FIG. 5;
FIG. 10 is a schematic cross-sectional view of four of the other embodiments of fins in the finned tube shown in FIG. 5;
FIG. 11 is a schematic diagram of the operation of the gas-liquid heat exchange device shown in FIG. 1;
FIG. 12 is a half sectional view of an embodiment of a first liquid distributor in the gas-liquid heat exchange device shown in FIG. 1;
fig. 13 is an enlarged schematic view of portion B of fig. 12;
FIG. 14 is a half sectional view of another embodiment of a first liquid distributor in the gas-liquid heat exchange device shown in FIG. 1;
FIG. 15 is an enlarged view of portion C of FIG. 14;
FIG. 16 is a half sectional view of an embodiment of a second liquid distributor in the gas-liquid heat exchange device shown in FIG. 1;
FIG. 17 is a half sectional view of another embodiment of a second liquid distributor in the gas-liquid heat exchange device shown in FIG. 1;
FIG. 18 is a schematic view of a gas-liquid heat exchange device in another embodiment of the present invention;
the meaning of the reference symbols in the drawings is:
10-gas-liquid heat exchange means;
20-a first liquid distributor, 21-a liquid inlet port, 22-a first branch flow equalizer, 23-a first main flow equalizer, 24-a diversion side pipe, 25-a pore plate and 26-a guide sheet;
30-a second liquid distributor, 31-a liquid outlet port, 32-a second branch flow equalizer and 33-a second main flow equalizer;
40-heat exchange assembly, 41-finned tube, 42-liquid guide tube, (43, 43a, 43b, 43c, 43d) -radiating fin.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 to 17, a schematic view of a gas-liquid heat exchanger 10 according to a preferred embodiment of the present invention is shown.
As shown in fig. 1 to 3, the gas-liquid heat exchange device 10 includes: the device comprises a first liquid distributor 20, a second liquid distributor 30 arranged in parallel with the first liquid distributor 20, and a heat exchange assembly 40 connected between the first liquid distributor 20 and the second liquid distributor 30. Wherein the first liquid distributor 20 is used for introducing and dividing liquid and is used as a gas outlet port. The second liquid distributor 30 is used for collecting and discharging liquid, and is used as an input port for gas. The heat exchange assembly 40 is used for guiding the liquid from the first liquid distributor 20 to the second liquid distributor 30, and guiding the gas from the second liquid distributor 30 to the first liquid distributor 20, and is also used as a main place for heat exchange between the gas and the liquid. The structure of each part is explained as follows:
the first liquid distributor 20 is integrally formed in a rectangular parallelepiped structure, and has two liquid inlet ports 21, seven first branch flow equalizers 22 arranged at intervals, and first main flow equalizers 23 connected to two ends of the first branch flow equalizers 22. Flow equalizing plates for evenly distributing liquid are arranged in the first main flow equalizer 23 and the first branch flow equalizer 22. Two liquid inlet ports 21 are respectively arranged at two ends of each first current equalizer 22. Each of the liquid inlet ports 21 is connected to one end of a first branch flow equalizer 22 through a first main flow equalizer 23 and is communicated with the first branch flow equalizer 22. In other embodiments, the number of the liquid inlet ports 21 is one, or more than one, and is uniformly distributed on the periphery of the first liquid distributor 20. The first current equalizers 22 are hollow tubes and are arranged at regular intervals, and the gap between two adjacent first current equalizers 22 is an air outlet gap.
The second liquid distributor 30 is integrally arranged in a rectangular parallelepiped structure corresponding to the first liquid distributor 20, and is provided with two liquid outlet ports 31 and seven second flow equalizers 32 arranged at intervals. Two liquid outlet ports 31 are respectively arranged at two ends of each second flow equalizer 32. Each liquid outlet port 31 is connected to one end of the second branch flow equalizer 32 through a second main flow equalizer 33 and is communicated with the second branch flow equalizer 32. In other embodiments, the number of the liquid outlet ports 31 is one, or more and is uniformly distributed on the circumference of the second liquid distributor 30. The second branch flow equalizers 32 are hollow tubes and are arranged at regular intervals, and the gap between two adjacent second branch flow equalizers 32 is an air inlet gap. In this embodiment, the second current equalizer 32 and the first current equalizer 22 are arranged in parallel.
This heat exchange assembly 40 includes: eighty-four finned tubes 41 distributed in a 12 x 7 uniform array. The outer contour of the adjacent two finned tubes 41 are arranged closely (it should be noted that, in order to show the structure and layout of the finned tubes 41 more clearly, the finned tubes 41 in the drawings of the present invention are arranged with a certain distance therebetween, while in fact the outer contours of the adjacent two finned tubes 41 in the present embodiment are arranged closely to each other, which can make the air flow contact with the finned tubes 41 more to improve the heat exchange efficiency). As shown in fig. 4 and 5, the outer profile of the cross section of each fin tube 41 in the radial direction of the liquid guide tube 42 is square. Each fin tube 41 includes: the liquid guide tube 42 and sixteen radiating fins 43 are connected with the liquid guide tube 42 and axially radiate outwards from the liquid guide tube 42. One end of the liquid guide tube 42 is communicated with the first flow equalizer 22, and the other end of the liquid guide tube 42 is communicated with the second flow equalizer 32. The heat radiating fins 43 extend in the same direction as the liquid guide tube 42. In the present embodiment, the liquid guide tube 42 is vertically connected between the first flow equalizer 22 and the second flow equalizer 32, and the cross section of the heat dissipation fin 43 in the radial direction of the liquid guide tube 42 is a straight piece shape. The fins 41 on the finned tube 41 are arranged in an asymmetric configuration, i.e., asymmetric from the point of view of the width and angle of the fins 41. As shown in fig. 6, the outer contour edges of two adjacent finned tubes 41 are closely arranged, and the adjacent fins 43 on the two adjacent finned tubes 41 are mutually staggered, so that air passages formed between the fins 43 can be mutually communicated, and the wind resistance is effectively reduced. In other embodiments, the heat dissipating fins 43 have a curved cross section in the radial direction of the liquid guiding tube 42, and for example, as shown in fig. 7, an arc-shaped protrusion is provided in the middle area of the heat dissipating fin 43 a. Alternatively, as shown in fig. 8, a triangular projection is provided in the middle region of the heat sink 43 b. Alternatively, as shown in fig. 9, the heat radiation fin 43c is provided with a bent portion having a concave-convex shape. Further, the fin 43 may be provided with a branch portion, for example, as shown in fig. 10, the fin 43d is provided with a bifurcated end extending toward both sides. Further, the number of fins 43 on each fin tube 41 can also be adjusted as needed. Furthermore, in other embodiments, the external profile shape of the cross section of the finned tube 41 in the radial direction of the catheter 42 may also be other types of parallelogram structures, such as a diamond shape, or other types of polygons, such as a triangle or a parallel hexagon, etc. Further, the finned tubes 41 may have different cross-sectional outer profiles. When the adjacent finned tubes 41 need to be mutually and compactly spliced, various shapes of the outer contour shapes with complementary shapes can be manufactured. In addition, a certain interval can be reserved between two adjacent finned tubes 41 so as to reduce the resistance of the gas during flowing.
Description of the working principle:
as shown in fig. 11 (because the external contours of the finned tubes 41 are arranged closely, the drawings are not clear, and for the sake of easy structure viewing, the finned tubes 41 in fig. 11 are arranged at intervals, which is only for easy view, in the actual structure view, the external contours of adjacent finned tubes 41 are close to each other, and the same is true in fig. 12 below), liquid enters the first main flow equalizer 23 from the liquid inlet ports 21 at both sides of the first liquid distributor 20, and is uniformly divided by the flow equalizer arranged inside the first main flow equalizer 23, so that the liquid uniformly enters the first branch flow equalizer 22, and the flow equalizer arranged inside the first branch flow equalizer 22 enables the liquid to uniformly flow into the liquid guide tube 42 of the finned tube 41. The liquid flows into the second branch flow equalizer 32 of the second liquid distributor 30 along the liquid guide tube 42 and flows out to the liquid discharge ports on both sides of the second liquid distributor 30 along the second branch flow equalizer 32. The gas enters from the lower part of the second liquid distributor 30 vertically from the air inlet gap between two adjacent second branch flow equalizers 32. Air guide grooves for air circulation are formed between the radiating fins 43 on the finned tube 41 and are parallel to the liquid guide tube 42, air flows to the first liquid distributor 20 along the air guide grooves and is discharged upwards from the air outlet gap between two adjacent first flow equalizers 22 (in other embodiments, the gas-liquid heat exchange device 10 can be inverted, so that the air flows from top to bottom, and the liquid flows from bottom to top). The flow of liquid in the finned tube 41 is opposite to the flow of gas outside the finned tube 41, and both heat transfer occurs in a counter-current manner through the finned tube 41. It should be noted that the number of finned tubes 41 can be arranged and extended in the longitudinal direction or/and the transverse direction, so as to further improve the processing capacity and the heat exchange efficiency of the gas-liquid heat exchange device 10. The number of finned tubes 41 can be increased or decreased as desired. The number of fins 43 on each finned tube 41 may also be increased or decreased as desired. In addition, the finned tube 41 in the present embodiment is uniformly distributed with respect to the first liquid distributor 20 and the second liquid distributor 30, and can perform a uniform flow distribution function regardless of the flow distribution of the liquid or the gas, which is beneficial to improving the heat exchange efficiency. Of course, it is not excluded that in some embodiments the finned tubes 41 are non-uniformly distributed. In practical applications, the liquid-gas heat exchanger 10 may be combined with a fan, a housing, etc. to form a liquid or gas cooling device. For example, a shell with openings at the upper end and the lower end is provided, wherein the opening at the upper end is an air outlet, the opening at the lower end is an air inlet, then the fan is installed at the air outlet of the shell, the gas-liquid heat exchanger 10 is installed in the inner cavity of the shell, under the driving of the fan, the external gas flows from the bottom to the top, the liquid in the gas-liquid heat exchanger 10 flows from the top to the bottom, the external gas is utilized to carry out heat exchange on the liquid in the gas-liquid heat exchanger 10 so as to cool the liquid, and the liquid is used as a liquid. For another example, a housing with openings at the upper and lower ends is provided, wherein the opening at the upper end is an air inlet, the opening at the lower end is an air outlet, then a blower is installed at the air outlet of the housing, the gas-liquid heat exchanger 10 is installed in the inner cavity of the housing, and the external air flows from top to bottom under the driving of the blower, at this time, compared with the above-mentioned liquid cooling device, the gas-liquid heat exchanger 10 needs to be placed upside down for use, so that the liquid in the gas-liquid heat exchanger 10 flows from bottom to top, and the circulating air is subjected to heat exchange by the liquid in the gas-liquid heat exchanger 10 to reduce the temperature, and the gas cooling device is used as a gas cooling device, such as.
As shown in fig. 12 to 15, the flow equalizing plate may be a perforated plate 25 or a louver-shaped arrangement of guide fins 26. In the embodiment of the present invention, the flow equalizing plates are disposed inside the first branch flow equalizer 22 and the first main flow equalizer 23, and are configured to evenly distribute the liquid passing through the first branch flow equalizer 22 and the first main flow equalizer 23. Referring to fig. 12 or 14, the flow equalizer is disposed inside the first flow equalizer 22, and the liquid enters the heat exchange module 40 through the guiding grooves formed by the flow dividing holes or the guide vanes 26 arranged in a shutter shape on the orifice plate 25, so as to achieve uniform flow dividing of the liquid.
As shown in fig. 16 and 17, in order to reduce the wind resistance during the gas intake, the cross section perpendicular to the length direction of the second branch flow equalizer 32 is in the shape of bullet or triangle protruding away from the heat exchange assembly 40, and by this design, the width at the inlet of the gas intake gap is larger relative to the width at the outlet thereof, and the resistance suffered by the gas during the gas intake is smaller.
In addition, the materials of the first liquid distributor 20, the second liquid distributor 30 and the heat exchange assembly 40 may be metal or plastic, or other kinds of inorganic synthetic materials, organic synthetic materials, etc.
When the gas-liquid heat exchange device 10 is used, liquid enters from the liquid inlet port 21 of the first liquid distributor 20, then enters the first main flow equalizer 23, is uniformly divided by the flow equalizer arranged in the first main flow equalizer 22, is divided by the flow equalizer arranged in the first main flow equalizer 22, enters the finned tube 41 of the heat exchange assembly 40 after being divided by the flow equalizer arranged in the first main flow equalizer 22, flows to the second liquid distributor 30 through the liquid guide tube 42 on the finned tube 41, and finally converges to the liquid outlet port 31 through the second flow equalizer 32 to be discharged. The gas enters from the air inlet gap of the second liquid distributor 30, passes through the finned tube 41 and is discharged from the air outlet gap of the first liquid distributor 20, the liquid flow direction is opposite to the gas flow direction, when the gas flows along the extending direction of the radiating fins 43 on the finned tube 41, the gas exchanges heat with the liquid in the liquid guide tube 42 through the radiating fins 43, and the extending direction of the radiating fins 43 is consistent with the extending direction of the liquid guide tube 42, so that the resistance suffered by the gas flow can be reduced, and the energy loss of the gas flow can be reduced. In addition, the cooling fins 43 are multiple and are arranged by taking the liquid guide pipes 42 as axial external radiation, so that each finned tube 41 can provide a larger heat exchange area, and the gas is divided by the cooling fins 43, the contact surface between the gas and the finned tubes 41 is increased, the circulation of the gas on the heat exchange assembly 40 per unit area is reduced, the stroke and the time of the gas in the heat exchange assembly 40 per unit volume are prolonged, the heat exchange time and the stroke of the gas and the liquid are increased, and in addition, the finned tubes 41 are uniformly distributed in an array mode, so that the gas and the liquid are more uniformly circulated. And the outer contour edges of two adjacent finned tubes 41 are arranged closely, so that the contact area between the gas and the radiating fins is larger, and the purpose of improving the heat exchange efficiency is achieved.
In other embodiments, as shown in fig. 18, the first liquid distributor 20 is further provided with a branch side pipe 24 connected to the end of the first main flow equalizer 23. The branch pipe 24 and the first main flow equalizer 23 are communicated with each other. The inlet port 21 is connected to the branch pipe 24. The liquid enters the branch side pipe 24 from the liquid inlet port 21 to be divided into two liquid flows, and then enters the two ends of the first main flow equalizer 23 respectively after passing through the flow equalizer. In the second liquid distributor 30, a flow equalizing plate and a flow dividing side pipe may be provided with reference to the first liquid distributor 20. For the wind resistance problem, similarly, the cross section perpendicular to the length direction of the first flow equalizer 22 may be in the shape of bullet or triangle protruding toward the forward heat exchange assembly 40, and by this design, the width of the inlet of the gas outlet gap is larger relative to the width of the outlet thereof, and the gas outlet suffers less resistance.
In other embodiments of the present invention, the heat exchanger may include m (m is an integer greater than 1) branch flow equalizers, each branch flow equalizer is connected with n (n is an integer greater than 1) finned tubes, and m × n finned tubes are distributed in an array; the specific values of m and n can be chosen or chosen according to actual conditions, as long as the cooling effect can be achieved, and the cooling device is convenient to install and easy to process.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A gas-liquid heat exchange device, comprising:
a first liquid distributor; the first liquid distributor is provided with a liquid inlet port, a plurality of first branch flow equalizers arranged at intervals and a first main flow equalizer connected to two ends of the first branch flow equalizers; the liquid inlet port is communicated with the first branch flow equalizer through the first main flow equalizer; a gap between every two adjacent first current equalizers is an air outlet gap; flow equalizing plates for evenly distributing liquid are arranged in the first main flow equalizer and the first branch flow equalizer;
a second liquid distributor; the second liquid distributor is provided with a liquid outlet port, a plurality of second branch flow equalizers arranged at intervals and a second main flow equalizer connected to the two ends of the second branch flow equalizers; the liquid outlet port is communicated with the second branch flow equalizer through the second main flow equalizer; a gap between every two adjacent second branch flow equalizers is an air inlet gap; and
the heat exchange assembly is connected between the first liquid distributor and the second liquid distributor; the heat exchange assembly comprises: a plurality of finned tubes distributed in a uniform array; each of the finned tubes includes: the liquid guide pipe and a plurality of radiating fins are connected with the liquid guide pipe and take the liquid guide pipe as axial external radiation; one end of the liquid guide pipe is communicated with the first flow equalizer; the other end of the liquid guide pipe is communicated with the second flow equalizer; the extending direction of the radiating fin is consistent with the extending direction of the liquid guide pipe; the outer contour edges of two adjacent finned tubes are arranged in an abutting mode; the gas flow direction and the liquid flow direction in the heat exchange assembly are in a counter-flow mode, and the gas and the liquid transfer heat in a counter-flow mode.
2. A gas-liquid heat exchange device according to claim 1, wherein adjacent fins on adjacent two of the finned tubes are offset from each other.
3. The gas-liquid heat exchange device of claim 1, wherein the first liquid distributor is further provided with a branch side pipe connected to an end of the first main flow equalizer; the two ends of the flow dividing side pipe are communicated with the two ends of the first main flow equalizer; the liquid inlet port is connected to the shunting side pipe.
4. The gas-liquid heat exchange device of claim 1, wherein the flow equalization plate is an orifice plate.
5. A gas-liquid heat exchange device according to claim 1, wherein the flow equalization plate is a louvered arrangement of guide fins.
6. The gas-liquid heat exchange device according to claim 1, wherein the fins have a straight piece shape or a curved shape in cross section in a radial direction of the liquid guide tube.
7. A gas-liquid heat exchange device according to claim 1, wherein the fins are provided with a branch portion.
8. A gas-liquid heat exchange device according to claim 1, wherein the finned tube has a cross section in the radial direction of the liquid guide tube having an outer contour of a triangle, or a parallelogram, or a parallel hexagon.
9. A gas-liquid heat exchange device according to claim 1, wherein the cross-section perpendicular to the length direction of the second flow equalizer is in the shape of a bullet projecting away from the heat exchange assembly.
10. A gas-liquid heat exchange device according to claim 1, wherein the cross-section of the second flow equalizer perpendicular to the length direction is triangular projecting away from the heat exchange assembly.
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