CN214039043U - Micro-channel heat exchanger and air conditioning system - Google Patents
Micro-channel heat exchanger and air conditioning system Download PDFInfo
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- CN214039043U CN214039043U CN202022416705.5U CN202022416705U CN214039043U CN 214039043 U CN214039043 U CN 214039043U CN 202022416705 U CN202022416705 U CN 202022416705U CN 214039043 U CN214039043 U CN 214039043U
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Abstract
The utility model relates to a refrigeration field provides a microchannel heat exchanger and air conditioning system, include: a first pipeline, a second pipeline and a microchannel pipeline; a plurality of fins which are obliquely installed downwards are arranged on each micro-channel pipeline, and each fin is provided with a connecting part and a drainage part which are sequentially arranged from top to bottom along the height direction; the fins are connected with the micro-channel pipeline through connecting parts, and the drainage parts are used for guiding condensed water to be discharged out of the fins. The utility model provides a microchannel heat exchanger, through set up the fin of slant installation down on connecting the microchannel pipe between two pipelines, and set up connecting portion and drainage portion on the fin, microchannel heat exchanger's structure has effectively been simplified, make the comdenstion water between the fin no longer appear and pile up, through this kind of structural improvement, make microchannel heat exchanger can be applicable to wideer temperature range more, cost and microchannel heat exchanger loss have been reduced when not influencing heat radiating area, promote the heat transfer effect, avoid microchannel heat exchanger's damage.
Description
Technical Field
The utility model relates to a refrigeration field especially relates to a microchannel heat exchanger and air conditioning system.
Background
Compared with the traditional heat exchanger, the micro-channel heat exchanger has the advantages of high heat exchange efficiency, small working medium consumption and the like. Because the requirements of people on environment protection and energy conservation in the world are higher and higher nowadays, the micro-channel heat exchanger is widely applied to various industries, such as the air conditioning industry, the automobile industry and the chemical and mechanical industry, by virtue of the advantages of the micro-channel heat exchanger.
At present, a common microchannel heat exchanger in the market mainly comprises two collecting pipes, flat pipes communicated with the two collecting pipes and fins arranged between the flat pipes. When using the microchannel heat exchanger with the evaporimeter, because there is not the comdenstion water influence, the heat transfer is comparatively abundant, but when using the microchannel heat exchanger as the condenser, no matter its fin is in order to be close perpendicular or when being on a parallel with the angle of horizontal plane and placing, can persist the comdenstion water, it not only influences the heat dissipation to persist the comdenstion water, also has certain damage risk to microchannel heat exchanger itself moreover.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a microchannel heat exchanger and air conditioning system for persist the comdenstion water on preventing microchannel heat exchanger's the fin, promote the heat transfer effect.
The embodiment of the utility model provides a microchannel heat exchanger, include: the device comprises a first pipeline, a second pipeline and a plurality of microchannel pipelines which are parallel to each other and arranged at intervals and are used for communicating the first pipeline with the second pipeline;
a plurality of fins which are obliquely installed downwards are arranged on each micro-channel pipeline, and each fin is provided with a connecting part and a drainage part which are sequentially arranged from top to bottom along the height direction; the fins are connected with the micro-channel pipeline through the connecting parts, and the drainage parts are used for guiding condensed water to be discharged out of the fins.
According to the utility model discloses a microchannel heat exchanger, it is adjacent correspond on the microchannel pipeline the fin sets up crisscross each other.
According to the utility model discloses a microchannel heat exchanger, crisscross setting each other the mutual single-point contact of fin.
According to the utility model discloses a microchannel heat exchanger, the cross-section of fin is isosceles triangle, connecting portion are located isosceles triangle's base, the drainage position is located isosceles triangle's apex angle.
According to the utility model discloses a microchannel heat exchanger, first pipeline is located the top of second pipeline, fin distribution density follows first pipeline is followed length direction on the microchannel pipeline towards the second pipeline reduces gradually.
According to the microchannel heat exchanger provided by the utility model, the first pipeline is positioned at the top of the second pipeline, and the fin is divided into at least two areas according to the difference of distribution density; the distribution density of each region arranged from the first pipeline along the length direction of the microchannel pipeline to the second pipeline is gradually reduced.
According to the utility model discloses a microchannel heat exchanger, the fin with correspond the contained angle of microchannel pipeline is 30-60.
According to the utility model discloses a microchannel heat exchanger, microchannel heat exchanger still includes: an axial flow fan; and the air port of the axial flow fan is arranged corresponding to the micro-channel pipeline.
According to the utility model discloses a microchannel heat exchanger, the fin reduces from last thickness extremely down along the direction of height gradually.
An embodiment of the utility model provides an air conditioning system, air conditioning system include above-mentioned microchannel heat exchanger.
The utility model provides a microchannel heat exchanger, through set up the fin of slant installation down on connecting the microchannel pipe between two pipelines, and set up connecting portion and drainage portion on the fin, microchannel heat exchanger's structure has effectively been simplified, make the comdenstion water between the fin no longer appear and pile up, through this kind of structural improvement, make microchannel heat exchanger can be applicable to wideer temperature range more, cost and microchannel heat exchanger loss have been reduced when not influencing heat radiating area, promote the heat transfer effect, avoid microchannel heat exchanger's damage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a microchannel heat exchanger according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a microchannel heat exchanger according to an embodiment of the present invention;
fig. 3 is a partial schematic view of a microchannel heat exchanger according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a microchannel tube and a fin according to an embodiment of the present invention;
in the figure, 1, a first pipeline; 2. a second pipeline; 3. a microchannel tubing; 4. a fin; 41. a connecting portion; 42. a drainage part.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The microchannel heat exchanger provided by the embodiment of the present invention is described below with reference to fig. 1 to 4, and includes: the device comprises a first pipeline 1, a second pipeline 2 and a plurality of micro-channel pipelines 3 which are parallel to each other and arranged at intervals and are used for communicating the first pipeline 1 with the second pipeline 2. The micro-channel pipeline 3 is a thin-wall porous flat tubular material which is made of a refined aluminum bar through hot extrusion and surface zinc spraying anti-corrosion treatment. A plurality of fins 4 which are obliquely installed downwards are arranged on each microchannel pipeline 3, and generally, the included angle between each fin 4 and the corresponding microchannel pipeline 3 is 30-60 degrees, and can also be adjusted according to actual conditions. The fin 4 is provided with a connecting portion 41 and a flow guiding portion 42 which are sequentially arranged from top to bottom in the height direction. The connecting part 41 is used as an intermediate structure, the fin 4 is connected with the micro-channel pipeline 3 through the connecting part 41, and the drainage part 42 on the fin 4 is used for guiding the condensed water to be discharged out of the fin 4.
The working principle is as follows: the refrigerant enters the first pipeline 1 or the second pipeline 2 through the inlet end of the first pipeline 1 or the second pipeline 2, then enters the microchannel pipeline 3, and is matched with the fins 4 to exchange heat with the outside air in the flowing process in the microchannel pipeline 3, and then is discharged through the second pipeline 2 or the first pipeline 1, so that refrigeration or heating is realized.
When the micro-channel heat exchanger is used as an evaporator, the refrigerant in the micro-channel pipeline 3 absorbs external heat and is converted from liquid to gas, and the fins 4 serve as a heat exchange structure, so that the external surface area of the micro-channel heat exchanger can be increased, and the purpose of improving the heat exchange efficiency is achieved.
When using the microchannel heat exchanger as a condenser, the refrigerant in the microchannel pipeline 3 radiates outwards, the refrigerant is converted into liquid from gas state, the temperature of the fin 4 is reduced, external water vapor (namely, gaseous water) is condensed into liquid through the fin 4, and as the fin 4 is provided with the connecting part 41 and the drainage part 42 which are sequentially arranged from top to bottom along the height direction, the condensate water on the fin 4 can be discharged through the drainage part 42 on the fin 4 under the action of gravity.
The embodiment of the utility model provides a microchannel heat exchanger, through set up the fin of slant installation down on the microchannel tube way between two pipelines of connection, and set up connecting portion and drainage portion on the fin, microchannel heat exchanger's structure has effectively been simplified, make the comdenstion water between the fin no longer appear and pile up, through this kind of structural improvement, make microchannel heat exchanger can be applicable to wideer temperature range more, cost and microchannel heat exchanger loss have been reduced when not influencing heat radiating area, promote the heat transfer effect, avoid microchannel heat exchanger's damage.
In addition, because the space of microchannel heat exchanger is limited, it is comparatively difficult to weld, the utility model discloses a simplify the fin, not only independently and the welding space has carried out the microchannel pipeline has had great promotion, also has great promotion effect to the batch production of microchannel heat exchanger.
On the basis of the above embodiment, as shown in fig. 1 to 4, the corresponding fins 4 on the adjacent microchannel tubes 3 are arranged to be staggered with each other. In this state, the fins 4 between the two microchannel tubes 3 are not affected by each other when the condensate water flows on the fins 4, and since the fins 4 are all biased, the drain portions 42 can discharge the condensate water to both sides of the microchannel tubes 3.
For the installation of being convenient for, can be with the mutual single point contact of fin 4 of mutual crisscross setting, set up through this kind of structure and not only promote heat exchange efficiency by a wide margin, because two fins 4 are the point contact moreover for two fins 4 can not appear the comdenstion water and pile up. The method is more suitable for a wider temperature range, and the application efficiency of the method is improved.
In this embodiment, the fins 4 may be triangular prism-shaped structures, the cross sections of the fins 4 are isosceles triangles, the connecting portions 41 are located on the bottom sides of the isosceles triangles, and the drainage portions 42 are located at the top corners of the isosceles triangles, so that the condensed water on the fins 4 can be conveniently and completely collected on the drainage portions 42. Meanwhile, the width of the fins of the conventional micro-channel heat exchanger is consistent, but when the micro-channel heat exchanger runs, the heat quantity of the position of the fin 4 which is farther away from the micro-channel is less, so that the cost of the fin is reduced after the fin 4 is simplified, and only a positive effect is exerted on the heat exchange effect.
Further, for promoting the heat transfer effect, still fin 4 reduces from last thickness to down along the direction of height gradually, from this, can further promote the comdenstion water on fin 4 and assemble.
For the intensive heat dissipation, the microchannel heat exchanger further comprises: an axial flow fan; the air port of the axial flow fan is arranged corresponding to the micro-channel pipeline 3. The axial flow fan is used for radiating heat of the fins 4 and the micro-channel pipeline 3.
Although the condensate tends to be discharged downwards under the pushing action of gravity and air flow, a small amount of condensate may remain under the action of surface tension in the process of discharging the condensate, and the condensate cannot be smoothly discharged out of the microchannel heat exchanger.
From this, when first pipeline 1 is located during the top of second pipeline 2, can reduce fin 4 distribution density from first pipeline 1 along the length direction on the microchannel pipeline 3 towards second pipeline 2 gradually, fin 4 reduces from last to bottom in proper order along direction of height's density on the microchannel pipeline 3 to reduce the windage, the discharge of the comdenstion water on fin 4 around the certain degree can promote microchannel pipeline 3 bottom.
In order to facilitate actual addition and installation, the fins 4 can be divided into at least two regions according to different distribution densities, the distribution density of each region, which is set towards the second pipeline 2, of the first pipeline 1 is gradually reduced along the length direction of the microchannel pipeline 3, namely, the corresponding density of the fins 4 in different regions is reduced from top to bottom along the height direction, so that the whole microchannel heat exchanger is convenient to process and install.
In addition, the embodiment of the utility model provides an air conditioning system still provides, as shown in fig. 1 to 4, this air conditioning system includes the microchannel heat exchanger. The microchannel heat exchanger includes: the device comprises a first pipeline 1, a second pipeline 2 and a plurality of micro-channel pipelines 3 which are parallel to each other and arranged at intervals and are used for communicating the first pipeline 1 with the second pipeline 2. Wherein a plurality of fins 4 are arranged obliquely downward on each microchannel pipe 3. The fins 4 are provided with a connecting part 41 and a drainage part 42 which are arranged in sequence from top to bottom along the height direction; the fins 4 are connected to the microchannel tubes 3 by connecting portions 41, and drains 42 on the fins 4 are used to guide the condensate water to exit the fins 4. For a specific structure of the microchannel heat exchanger, please refer to the text description related to fig. 1 to 4, which is not repeated herein.
The utility model provides an air conditioning system because it has adopted the microchannel heat exchanger. Through set up the fin of slant installation down on the microchannel pipeline between two pipelines of connection to set up connecting portion and drainage portion on the fin, effectively simplified microchannel heat exchanger's structure, make the comdenstion water of no longer appearing between the fin pile up, through this kind of structural improvement, make microchannel heat exchanger can be applicable to wideer temperature range more, when not influencing heat radiating area reduce cost and microchannel heat exchanger loss, promote the heat transfer effect, avoid microchannel heat exchanger's damage.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A microchannel heat exchanger, comprising:
the device comprises a first pipeline, a second pipeline and a plurality of microchannel pipelines which are parallel to each other and arranged at intervals and are used for communicating the first pipeline with the second pipeline;
a plurality of fins which are obliquely installed downwards are arranged on each micro-channel pipeline, and each fin is provided with a connecting part and a drainage part which are sequentially arranged from top to bottom along the height direction; the fins are connected with the micro-channel pipeline through the connecting parts, and the drainage parts are used for guiding condensed water to be discharged out of the fins.
2. The microchannel heat exchanger of claim 1, wherein the corresponding fins on adjacent microchannel tubes are staggered relative to one another.
3. The microchannel heat exchanger of claim 2, wherein the fins disposed in staggered relation to one another are in single point contact with one another.
4. The microchannel heat exchanger of claim 1, wherein the fin has a cross section of an isosceles triangle, the connection portion is located at a base of the isosceles triangle, and the flow-directing portion is located at a vertex angle of the isosceles triangle.
5. The microchannel heat exchanger of claim 1, wherein the first tube is positioned on top of the second tube, and the fin distribution density decreases from the first tube along the length of the microchannel tube toward the second tube.
6. The microchannel heat exchanger of claim 1, wherein the first tube is positioned on top of the second tube, and the fin is divided into at least two regions according to a difference in distribution density; the distribution density of each region arranged from the first pipeline along the length direction of the microchannel pipeline to the second pipeline is gradually reduced.
7. The microchannel heat exchanger of claim 1, wherein the fins are angled 30-60 ° from the corresponding microchannel tubes.
8. The microchannel heat exchanger of any one of claims 1-7, further comprising: an axial flow fan; and the air port of the axial flow fan is arranged corresponding to the micro-channel pipeline.
9. The microchannel heat exchanger of any one of claims 1-7, wherein the fins have a thickness that decreases from top to bottom in the height direction.
10. An air conditioning system, characterized in that it comprises a microchannel heat exchanger according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022416705.5U CN214039043U (en) | 2020-10-27 | 2020-10-27 | Micro-channel heat exchanger and air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022416705.5U CN214039043U (en) | 2020-10-27 | 2020-10-27 | Micro-channel heat exchanger and air conditioning system |
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| CN214039043U true CN214039043U (en) | 2021-08-24 |
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| CN202022416705.5U Active CN214039043U (en) | 2020-10-27 | 2020-10-27 | Micro-channel heat exchanger and air conditioning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116972674A (en) * | 2023-07-31 | 2023-10-31 | 山东大学 | Micro-channel heat exchanger with double guide boss fins and preparation method thereof |
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2020
- 2020-10-27 CN CN202022416705.5U patent/CN214039043U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116972674A (en) * | 2023-07-31 | 2023-10-31 | 山东大学 | Micro-channel heat exchanger with double guide boss fins and preparation method thereof |
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