CN211782884U - Micro-channel parallel flow heat exchanger - Google Patents
Micro-channel parallel flow heat exchanger Download PDFInfo
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- CN211782884U CN211782884U CN201922158428.XU CN201922158428U CN211782884U CN 211782884 U CN211782884 U CN 211782884U CN 201922158428 U CN201922158428 U CN 201922158428U CN 211782884 U CN211782884 U CN 211782884U
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Abstract
The disclosure provides a micro-channel parallel flow heat exchanger, and belongs to the technical field of heat exchange. The microchannel parallel flow heat exchanger comprises a flat tube assembly, a collecting tube assembly and a fin assembly, wherein the collecting tube assembly comprises a first collecting tube and a second collecting tube which are arranged in parallel at intervals; the flat pipe assembly comprises a plurality of flat pipe units, each flat pipe unit is sequentially arranged at intervals along the length direction of the first collecting pipe, each flat pipe unit comprises a first flat pipe part and a second flat pipe part, the first flat pipe parts and the second flat pipe parts are arranged at intervals in the length direction of the first collecting pipe in a staggered mode, the bent ends of the first flat pipe parts and the bent ends of the second flat pipe parts are communicated together, the direct-connected end of the first flat pipe part is communicated with the first collecting pipe, and the direct-connected end of the second flat pipe part is communicated with the second collecting pipe; the fin assembly comprises a plurality of fin units, and one fin unit is clamped between every two adjacent first flat tube parts and the second flat tube part. The present disclosure may reduce material costs.
Description
Technical Field
The disclosure belongs to the technical field of heat exchange, and particularly relates to a micro-channel parallel flow heat exchanger.
Background
The heat exchanger is a common heat exchange device and mainly comprises a flat pipe assembly, a collecting pipe assembly and a fin assembly, wherein the collecting pipe assembly comprises a first collecting pipe and a second collecting pipe, the first collecting pipe and the second collecting pipe are communicated through the flat pipe assembly, and the fin assembly is arranged in the flat pipe assembly to exchange heat for cooling liquid circulating in the flat pipe assembly.
In the related art, in order to improve the heat exchange effect of the heat exchanger, two sets of collecting pipe assemblies are usually arranged, flat pipes are communicated between a first collecting pipe and a second collecting pipe of each set of collecting pipe assembly, and the two sets of collecting pipe assemblies are communicated with each other. So arrange, can be so that the coolant liquid circulates between two sets of collecting pipe subassemblies, increased the time of coolant liquid through flat pipe to the heat transfer time of fin subassembly to the coolant liquid has been increased, and then improved the heat transfer effect.
However, although the heat exchanger has improved heat exchange effect, the two sets of header pipe assemblies are provided, which results in an increase in material cost.
SUMMERY OF THE UTILITY MODEL
The embodiment of the disclosure provides a microchannel parallel flow heat exchanger, which can reduce material cost under the condition of ensuring heat exchange effect. The technical scheme is as follows:
the disclosed embodiments provide a microchannel parallel flow heat exchanger comprising a flat tube assembly, a header assembly, and a fin assembly,
the collecting pipe assembly comprises a first collecting pipe and a second collecting pipe, and the first collecting pipe and the second collecting pipe are arranged in parallel at intervals;
the flat pipe assembly comprises a plurality of flat pipe units, each flat pipe unit is sequentially arranged at intervals along the length direction of the first collecting pipe, each flat pipe unit comprises a first flat pipe part and a second flat pipe part, the first flat pipe part and the second flat pipe part are of long-strip-shaped structures, the first flat pipe part and the second flat pipe part are arranged at intervals in the length direction of the first collecting pipe in a staggered mode, each first flat pipe part and each second flat pipe part comprise a bending end and a straight connecting end, the bending ends of the first flat pipe part and the second flat pipe part are communicated together, the straight connecting end of the first flat pipe part is communicated with the first collecting pipe, and the straight connecting end of the second flat pipe part is communicated with the second collecting pipe;
the fin assembly comprises a plurality of fin units, and one fin unit is clamped between every two adjacent first flat tube parts and every two adjacent second flat tube parts.
In an implementation manner of the present disclosure, each of the flat tube units further includes a communicating portion, one end of the communicating portion is communicated with the bent end of the first flat tube portion, and the other end of the communicating portion is communicated with the bent end of the second flat tube portion.
In another implementation manner of the present disclosure, the communicating portion is a semi-annular flat tube structure, and the recess of the communicating portion is arranged toward the first flat tube portion and the second flat tube portion.
In yet another implementation of the present disclosure, an inner diameter of the communication portion is equal to a shortest distance between the first flat tube portion and the second flat tube portion.
In yet another implementation of the present disclosure, the first flat tube portion, the second flat tube portion, and the communication portion are an integral structure.
In another implementation manner of the present disclosure, each of the communicating portions is located on a first straight line, the first straight line is parallel to an axis of the first header, and a shortest distance between the first straight line and the axis of the first header is equal to a shortest distance between the first straight line and an axis of the second header.
In yet another implementation of the present disclosure, an angle between a common perpendicular between the first straight line and the axis of the first header and a common perpendicular between the first straight line and the axis of the second header is not greater than 50 ° in the same plane.
In another implementation manner of the present disclosure, for any two adjacent communicating portions, one of the communicating portions is located on a second straight line, a plane coplanar with an axis of the first header is perpendicular to a plane coplanar with axes of the first header and the second header, the other communicating portion is located on a third straight line, a plane coplanar with an axis of the third header is perpendicular to a plane coplanar with axes of the first header and the second header, and both the second straight line and the third straight line are parallel to an axial direction of the first header.
In yet another implementation of the disclosure, an angle between a common perpendicular between the second straight line and the axis of the first header and a common perpendicular between the second straight line and the axis of the second header is not greater than 25 ° in the same plane.
In yet another implementation of the disclosure, an angle between a common perpendicular between the third straight line and the axis of the first header and a common perpendicular between the third straight line and the axis of the second header is not greater than 25 ° in the same plane.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
when carrying out the heat transfer through the microchannel parallel flow heat exchanger that this disclosed embodiment provided, the coolant liquid flows in by first pressure manifold, flows out through the direct connection end of first flat tube portion. In the circulation process in the first flat tube portion, the fin units clamped between the first flat tube portion and the second flat tube portion are utilized for heat exchange, so that the first heat exchange of one flat tube unit is realized. The coolant liquid flows to the end of buckling of the flat tub of portion of second by the end of buckling of first flat tub of portion, at the intercommunication in-process of the flat tub of portion of second, utilizes the fin unit of pressing from both sides between the flat tub of portion of first flat tub of portion and second to carry out the heat transfer, so realized the second heat transfer of same flat tub of unit. And then, the heat flows from the direct connection end of the second flat pipe part to the second collecting pipe, and the whole heat exchange process is completed. That is to say, among the single flat tube unit that this disclosure provided, can carry out twice heat transfer to heat transfer capacity has been guaranteed. In addition, because the microchannel parallel flow heat exchanger provided by the disclosure realizes the backflow of the cooling liquid by utilizing the self bending of the flat pipe unit, only two collecting pipes (a first collecting pipe and a second collecting pipe) need to be arranged, thereby reducing the material cost.
Therefore, the microchannel parallel flow heat exchanger provided by the embodiment of the disclosure can reduce the material cost under the condition of ensuring the heat exchange effect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a microchannel parallel flow heat exchanger provided in an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a partial structure of a microchannel parallel flow heat exchanger provided in an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a flat tube unit provided in the embodiment of the present disclosure;
FIG. 4 is another schematic partial block diagram of a microchannel parallel flow heat exchanger provided in accordance with embodiments of the present disclosure;
fig. 5 is a front view of a flat tube unit provided in an embodiment of the present disclosure;
FIG. 6 is a schematic structural diagram of another microchannel parallel flow heat exchanger provided in accordance with an embodiment of the present disclosure;
fig. 7 is a front view of another flat tube unit provided in the embodiments of the present disclosure.
The symbols in the drawings represent the following meanings:
1. a flat tube assembly; 11. flat tube units; 111. a first flat tube portion; 112. a second flat tube portion; 113. a communicating portion; 2. a manifold assembly; 21. a first header; 22. a second header; 3. a fin assembly; 31. a fin unit.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
The embodiment of the present disclosure provides a microchannel parallel flow heat exchanger, as shown in fig. 1, which includes a flat tube assembly 1, a header assembly 2 and a fin assembly 3.
The header assembly 2 includes a first header 21 and a second header 22, and the first header 21 and the second header 22 are arranged in parallel and spaced apart from each other.
Flat pipe assembly 1 includes a plurality of flat pipe unit 11, each flat pipe unit 11 is along the length direction of first pressure manifold 21 interval arrangement in proper order, every flat pipe unit 11 all includes first flat pipe portion 111 and second flat pipe portion 112, first flat pipe portion 111 and second flat pipe portion 112 are rectangular form structure, first flat pipe portion 111 and second flat pipe portion 112 are crisscross interval arrangement on the length direction along first pressure manifold 21, first flat pipe portion 111 and second flat pipe portion 112 all include the end of buckling and directly link the end, the end of buckling of first flat pipe portion 111 and second flat pipe portion 112 feeds through together, the end of directly linking of first flat pipe portion 111 and first pressure manifold 21 intercommunication, the end of directly linking of second flat pipe portion 112 and second pressure manifold 22 intercommunication.
Fig. 2 is a partial structural schematic view of a microchannel parallel flow heat exchanger, and in conjunction with fig. 2, the fin assembly 3 includes a plurality of fin units 31, and one fin unit 31 is interposed between every two adjacent first flat tube portions 111 and second flat tube portions 112.
Note that, in order to show the structure of the flat tube unit 11 more clearly, the fin unit 31 is omitted in fig. 1, and only a part of the fin unit 31 is shown in fig. 2. In practice, fin unit 31 may extend from the bent end of first flat tube portion 111 to the straight end of first flat tube portion 111.
When heat exchange is performed through the microchannel parallel flow heat exchanger provided by the embodiment of the present disclosure, the cooling liquid flows in from the first collecting pipe 21, and flows out through the direct connection end of the first flat pipe portion 111. In the process of circulation in the first flat tube portions 111, heat exchange is performed by the fin units 31 interposed between the first flat tube portions 111 and the second flat tube portions 112, and thus, the first heat exchange of one flat tube unit 11 is realized. The coolant flows to the bent end of the second flat tube portion 112 from the bent end of the first flat tube portion 111, and in the communicating process of the second flat tube portion 112, the fin unit 31 interposed between the first flat tube portion 111 and the second flat tube portion 112 is used for heat exchange, so that the second heat exchange of the same flat tube unit 11 is realized. After that, the heat flows from the straight end of the second flat tube part 112 to the second header 22, and the whole heat exchange process is completed. That is to say, in the single flat tube unit 11 provided by the present disclosure, heat exchange can be performed twice, thereby ensuring heat exchange capability. In addition, because the microchannel parallel flow heat exchanger provided by the disclosure realizes the backflow of the cooling liquid by utilizing the self bending of the flat tube unit 11, only two collecting pipes (the first collecting pipe 21 and the second collecting pipe 22) need to be arranged, thereby reducing the material cost.
Therefore, the microchannel parallel flow heat exchanger provided by the embodiment of the disclosure can reduce the material cost under the condition of ensuring the heat exchange effect.
Fig. 3 is a schematic structural diagram of the flat tube units, and with reference to fig. 3, in this embodiment, each flat tube unit 11 further includes a communication portion 113, one end of the communication portion 113 is communicated with the bent end of the first flat tube portion 111, and the other end of the communication portion 113 is communicated with the bent end of the second flat tube portion 112.
In the above implementation, the communication portion 113 is used to communicate the first flat tube portion 111 and the second flat tube portion 112, so as to realize the circulation of the cooling liquid between the first flat tube portion 111 and the second flat tube portion 112.
Alternatively, the first flat tube portion 111, the second flat tube portion 112, and the communication portion 113 are an integral structural member.
In the above implementation manner, the structural integrity of the flat pipe unit 11 can be ensured by the arrangement, the structural strength of the flat pipe unit 11 is improved, the production and the manufacture of the flat pipe unit 11 are facilitated, and the manufacturing cost and the manufacturing efficiency are reduced.
Exemplarily, the first flat tube portion 111, the second flat tube portion 112 and the communication portion 113 may be all aluminum structural members to reduce the self weight of the flat tube structure and ensure the heat exchange effect.
Alternatively, the communication portion 113 is a semi-annular flat tube structure, and the recess of the communication portion 113 is arranged toward the first flat tube portion 111 and the second flat tube portion 112.
In the above implementation, the communicating portion 113 is provided as a semi-annular flat tube structure, so that the passing performance of the cooling liquid in the communicating portion 113 can be ensured, the cooling liquid can flow from the first flat tube portion 111 to the second flat tube portion 112 through the communicating portion 113, and the flow rate of the cooling liquid can be ensured.
Fig. 4 is another partial structural view of the microchannel parallel flow heat exchanger, exemplarily, the inner diameter of the communication part 113 is equal to the shortest distance between the first flat tube part 111 and the second flat tube part 112.
In the implementation mode, the structure compactness of the micro-channel parallel flow heat exchanger can be realized on the basis of ensuring the smooth flow of the cooling liquid.
It should be noted that the shortest distance between the first flat tube portion 111 and the second flat tube portion 112 may be adjusted according to the size of the fin unit 31, and the present disclosure does not limit this.
Illustratively, the inner wall of the communication portion 113, the inner wall of the first flat tube portion 111, and the inner wall of the second flat tube portion 112 are all flush.
This can further improve the permeability of the coolant inside the flat tube unit 11.
In addition, the concave part of the communication part 113 is arranged towards the first flat tube part 111 and the second flat tube part 112, so that the fin unit 31 can be conveniently accommodated between the first flat tube part 111 and the second flat tube part 112, and the heat exchange effect of the microchannel parallel flow heat exchanger is ensured.
Referring again to fig. 1, in the present embodiment, each communication portion 113 is located on the first straight line L1Upper, first straight line L1A first straight line L parallel to the axis of the first header 211The shortest distance to the axis of the first header 21 is equal to the first straight line L1The shortest distance from the axis of the second header 22.
The first straight line L is1For describing each communicating portion 113 as a set virtual straight lineThe arrangement mode. The communication portions 113 may be regarded as virtual straight lines formed by the arrangement of the communication portions.
In the above implementation, each communicating portion 113 is located at the middle between the first header 21 and the second header 22, that is, the length of the cooling liquid flowing from the straight end of the first flat tube portion 111 to the bent end is the same as the length of the cooling liquid flowing from the straight end of the second flat tube portion 112 to the bent end. So set up, can guarantee that the heat transfer performance of first flat tube portion 111 and second flat tube portion 112 all obtains same full play, avoided the uneven condition of heat transfer to take place.
Fig. 5 is a front view of the flat tube unit 11, and in conjunction with fig. 5, exemplarily, in the same plane, a first straight line L1A common perpendicular line with the axis of the first header 21 and a first straight line L1The angle alpha to the common vertical between the axes of the second headers 22 is not more than 50 deg..
In the above implementation, the included angle α is limited by the production process and the installation space of the microchannel parallel flow heat exchanger. The angle α is set to not more than 50 °, and the flat tube unit 11 can be manufactured at a low manufacturing cost. And moreover, the structure compactness of the micro-channel parallel flow heat exchanger can be ensured, and the too large installation space required by the micro-channel parallel flow heat exchanger cannot be caused.
Fig. 6 is a schematic structural diagram of another microchannel parallel flow heat exchanger provided in the practice of the present disclosure, and in conjunction with fig. 6, the structure of the microchannel parallel flow heat exchanger is substantially the same as that of the microchannel parallel flow heat exchanger shown in fig. 1, except for the arrangement manner of the flat tube units 11.
In the present embodiment, for any two adjacent communication portions 113, one communication portion 113 is located on the second straight line L2Upper, second straight line L2A plane coplanar with the axis of the first header 21 is perpendicular to the planes coplanar with the axes of the first header 21 and the second header 22, and the other communication part 113 is located on a third straight line L3Upper, third straight line L3A plane coplanar with the axis of the second header 22 is perpendicular to the plane coplanar with the axes of the first header 21 and the second header 22, and a second straight line L2And a third straight line L3Are all parallel to the axial direction of the first header 21.
Note that the second straight line L2And a third straight line L3All are set virtual straight lines for describing the arrangement of the communicating portions 113. The communication portions 113 may be regarded as virtual straight lines formed by the arrangement of the communication portions.
In the above implementation, two adjacent communication portions 113 are alternately arranged to be aligned with the first header 21 and the second header 22, respectively, so as to improve the installation stability of the microchannel parallel flow heat exchanger.
Fig. 7 is a front view of another flat tube unit 11, and in conjunction with fig. 7, exemplarily, a second straight line L is in the same plane2A common perpendicular line to the axis of the first header 21 and a second straight line L2The angle β with the common vertical between the axes of the second headers 22 is not more than 25 °.
In the above implementation, the included angle β is limited by the production process and the installation space of the microchannel parallel flow heat exchanger. The included angle β is set to be not more than 25 °, and the flat tube unit 11 can be manufactured at a low manufacturing cost. And moreover, the structure compactness of the micro-channel parallel flow heat exchanger can be ensured, and the too large installation space required by the micro-channel parallel flow heat exchanger cannot be caused.
Exemplarily, in the same plane, a third straight line L3A common perpendicular line to the axis of the first header 21 and a third straight line L3The angle gamma with the common vertical line between the axes of the second headers 22 is not more than 25 deg..
In the above implementation, the included angle γ is limited by the production process and the installation space of the microchannel parallel flow heat exchanger. The angle γ is set to not more than 25 °, and the flat tube unit 11 can be manufactured at a low manufacturing cost. And moreover, the structure compactness of the micro-channel parallel flow heat exchanger can be ensured, and the too large installation space required by the micro-channel parallel flow heat exchanger cannot be caused.
Illustratively, the included angle β and the included angle γ may be equal to further improve the installation stability of the microchannel parallel flow heat exchanger.
The working process of the microchannel parallel flow heat exchanger provided by the embodiment of the disclosure is briefly described as follows:
the coolant flows in from the first header 21 and flows out through the straight end of the first flat tube portion 111. In the process of circulation in the first flat tube portions 111, heat exchange is performed by the fin units 31 interposed between the first flat tube portions 111 and the second flat tube portions 112, and thus, the first heat exchange of one flat tube unit 11 is realized. The coolant flows from the bent end of the first flat tube portion 111 to the bent end of the second flat tube portion 112 through the communicating portion 113, and in the communicating process of the second flat tube portion 112, the fin unit 31 interposed between the first flat tube portion 111 and the second flat tube portion 112 exchanges heat, thereby achieving the second heat exchange of the same flat tube unit 11. After that, the heat flows from the straight end of the second flat tube part 112 to the second header 22, and the whole heat exchange process is completed. That is to say, in the single flat tube unit 11 provided by the present disclosure, heat exchange can be performed twice, thereby ensuring heat exchange capability.
In addition, because the microchannel parallel flow heat exchanger provided by the disclosure realizes the backflow of the cooling liquid by utilizing the self bending of the flat tube unit 11, only two collecting pipes (the first collecting pipe 21 and the second collecting pipe 22) need to be arranged, thereby reducing the material cost.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.
Claims (10)
1. A microchannel parallel flow heat exchanger comprising a flat tube assembly (1), a header assembly (2) and a fin assembly (3),
the collecting pipe assembly (2) comprises a first collecting pipe (21) and a second collecting pipe (22), and the first collecting pipe (21) and the second collecting pipe (22) are arranged in parallel at intervals;
the flat pipe assembly (1) comprises a plurality of flat pipe units (11), the flat pipe units (11) are sequentially arranged at intervals along the length direction of the first collecting pipe (21), each flat pipe unit (11) comprises a first flat pipe part (111) and a second flat pipe part (112), the first flat tube part (111) and the second flat tube part (112) are both of long strip-shaped structures, the first flat tube parts (111) and the second flat tube parts (112) are arranged at intervals in a staggered manner along the length direction of the first collecting pipe (21), the first flat tube part (111) and the second flat tube part (112) both comprise a bent end and a straight end, the bent ends of the first flat tube part (111) and the second flat tube part (112) are communicated together, the direct connection end of the first flat pipe part (111) is communicated with the first collecting pipe (21), the direct connection end of the second flat pipe part (112) is communicated with the second collecting pipe (22);
the fin assembly (3) comprises a plurality of fin units (31), and one fin unit (31) is clamped between every two adjacent first flat tube parts (111) and second flat tube parts (112).
2. The microchannel parallel flow heat exchanger according to claim 1, wherein each of the flat tube units (11) further comprises a communicating portion (113), one end of the communicating portion (113) communicates with the bent end of the first flat tube portion (111), and the other end of the communicating portion (113) communicates with the bent end of the second flat tube portion (112).
3. The microchannel parallel flow heat exchanger according to claim 2, wherein the communication portion (113) is a semi-annular flat tube structure, and a depression of the communication portion (113) is arranged toward the first flat tube portion (111) and the second flat tube portion (112).
4. The microchannel parallel flow heat exchanger of claim 3, wherein the inner diameter of the communication portion (113) is equal to the shortest distance between the first flat tube portion (111) and the second flat tube portion (112).
5. The microchannel parallel flow heat exchanger of claim 2, wherein the first flat tube portion (111), the second flat tube portion (112), and the communication portion (113) are a unitary structural member.
6. The microchannel parallel flow heat exchanger of claim 2, wherein each of the connections (113) is located on a first line parallel to the axis of the first header (21), and the shortest distance between the first line and the axis of the first header (21) is equal to the shortest distance between the first line and the axis of the second header (22).
7. The microchannel parallel flow heat exchanger of claim 6, wherein the angle between a common perpendicular between the first line and the axis of the first header (21) and a common perpendicular between the first line and the axis of the second header (22) in the same plane is no greater than 50 °.
8. The microchannel parallel flow heat exchanger of claim 2, wherein for any two adjacent communication portions (113), one of the communication portions (113) is located on a second straight line, the plane coplanar with the axis of the first header (21) is perpendicular to the plane coplanar with the axis of the first header (21) and the axis of the second header (22), the other of the communication portions (113) is located on a third straight line, the plane coplanar with the axis of the second header (22) is perpendicular to the plane coplanar with the axis of the first header (21) and the axis of the second header (22), and the second straight line and the third straight line are both parallel to the axial direction of the first header (21).
9. The microchannel parallel flow heat exchanger of claim 8, wherein the angle between a common perpendicular between the second line and the axis of the first header (21) and a common perpendicular between the second line and the axis of the second header (22) in the same plane is no greater than 25 °.
10. The microchannel parallel flow heat exchanger of claim 8, wherein, in the same plane, an angle between a common perpendicular between the third line and the axis of the first header (21) and a common perpendicular between the third line and the axis of the second header (22) is no greater than 25 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922158428.XU CN211782884U (en) | 2019-12-05 | 2019-12-05 | Micro-channel parallel flow heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922158428.XU CN211782884U (en) | 2019-12-05 | 2019-12-05 | Micro-channel parallel flow heat exchanger |
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| CN211782884U true CN211782884U (en) | 2020-10-27 |
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| CN201922158428.XU Active CN211782884U (en) | 2019-12-05 | 2019-12-05 | Micro-channel parallel flow heat exchanger |
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