CN210101256U - Heat exchanger and automobile air conditioning system - Google Patents
Heat exchanger and automobile air conditioning system Download PDFInfo
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- CN210101256U CN210101256U CN201920875621.2U CN201920875621U CN210101256U CN 210101256 U CN210101256 U CN 210101256U CN 201920875621 U CN201920875621 U CN 201920875621U CN 210101256 U CN210101256 U CN 210101256U
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Abstract
The utility model relates to a heat exchange technology field discloses a heat exchanger and vehicle air conditioning system. The heat exchanger comprises a first liquid collecting pipe and a second liquid collecting pipe which are provided with cylindrical inner cavities and are communicated with each other; the first connecting part is communicated with the inner cavities of the first liquid collecting pipe and the second liquid collecting pipe and is positioned between the first liquid collecting pipe and the second liquid collecting pipe; the third liquid collecting pipe and the fourth liquid collecting pipe are provided with cylindrical inner cavities and are not communicated with each other; the heat exchanger comprises a first heat exchange pipe group and a second heat exchange pipe group, one end of the first heat exchange pipe group is communicated with the first liquid collecting pipe assembly, the other end of the first heat exchange pipe group is communicated with one of the third liquid collecting pipe and the fourth liquid collecting pipe, one end of the second heat exchange pipe group is communicated with the first liquid collecting pipe assembly, the other end of the second heat exchange pipe group is communicated with the other of the third liquid collecting pipe and the fourth liquid collecting pipe, and the first heat exchange pipe group and the second heat exchange pipe group respectively comprise a plurality of heat exchange pipes with circular refrigerant flow channels. The utility model discloses vehicle air conditioning system's heat exchanger, compact structure accords with carbon dioxide's heat transfer and flow characteristic, has higher compressive property and higher heat transfer performance.
Description
Technical Field
The utility model relates to a heat exchanger technical field especially relates to a heat exchanger.
Background
Currently, tetrafluoroethane and tetrafluoropropene are commonly used refrigerants in automotive air conditioning systems. Among them, tetrafluoroethane has a high Global Warming Potential (GWP), and tetrafluoropropene has a certain flammability although its GWP is low, and therefore, it can be used only as a transition substitute refrigerant for tetrafluoroethane. With the increasing global warming problem, it is very urgent to find a new substitute refrigerant suitable for the air conditioning industry for a long time.
Carbon dioxide is used as an environment-friendly natural working medium widely existing in the nature, has the GWP of 1.0, has the advantages of non-flammability, easiness in obtaining and the like, has excellent heating performance and better refrigerating performance, and is expected to be used as a substitute for a refrigerant for a long time. However, if carbon dioxide is used as the refrigerant, the operating pressure of the apparatus is 5 to 6 times higher than that of a refrigeration apparatus using tetrafluoroethane and tetrafluoropropene as the refrigerants.
In order to meet the operating requirements of carbon dioxide as a refrigerant, heat exchangers used in refrigeration equipment must have very high pressure resistance and reliability. At present, a heat exchanger widely applied is of a parallel flow structure, a flat heat exchange tube and a collecting tube adopted cannot meet the requirement of high pressure resistance of a carbon dioxide air conditioning system, and on the other hand, the existing heat exchanger design cannot meet the requirement of high-efficiency heat exchange due to the fact that the thermodynamic physical properties of carbon dioxide and the existing refrigerant are greatly different.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heat exchanger, this heat exchanger has higher pressure resistance and higher heat transfer performance.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a heat exchanger, comprising:
the first liquid collecting pipe assembly comprises a first liquid collecting pipe and a second liquid collecting pipe which are communicated with each other;
a first connection part connected between the first header pipe and the second header pipe and configured to be able to communicate an inner cavity of the first header pipe and an inner cavity of the second header pipe;
the second liquid collecting pipe assembly is arranged in parallel with the first liquid collecting pipe assembly at intervals and comprises a third liquid collecting pipe and a fourth liquid collecting pipe which are not communicated with each other;
the heat exchange tube set comprises a first heat exchange tube set and a second heat exchange tube set, one end of the first heat exchange tube set is communicated with the first liquid collecting tube assembly, and the other end of the first heat exchange tube set is communicated with one of the third liquid collecting tube and the fourth liquid collecting tube; one end of the second heat exchange tube set is communicated with the first liquid collecting tube assembly, the other end of the second heat exchange tube set is communicated with the other one of the third liquid collecting tube and the fourth liquid collecting tube, the first heat exchange tube set and the second heat exchange tube set respectively comprise a plurality of heat exchange tubes, and a plurality of refrigerant flow channels are arranged on the heat exchange tubes.
Preferably, the first connecting part comprises a first plane bulge arranged on the first liquid collecting pipe and a second plane bulge arranged on the second liquid collecting pipe, and the first plane bulge is in fit butt joint with the second plane bulge.
Preferably, the first planar protrusions are continuously arranged along the axial direction of the first header pipe, and the second planar protrusions are continuously arranged along the axial direction of the second header pipe.
Preferably, the first planar protrusion is provided with a plurality of first through holes communicated with the cylindrical inner cavity of the first liquid collecting pipe, the second planar protrusion is provided with a plurality of second through holes communicated with the cylindrical inner cavity of the second liquid collecting pipe, and the first through holes and the second through holes are equal in number and are communicated in a one-to-one correspondence manner.
Preferably, the convex plane of the first plane bulge is tangent to the outer pipe wall of the first header pipe, and the convex plane of the second plane bulge is tangent to the outer pipe wall of the second header pipe.
Preferably, the cross-sectional shape of the refrigerant channel is a circle, and the diameter of the circle is 0.5mm-0.8 mm.
Preferably, a plurality of heat exchange tube mounting grooves are formed in the first liquid collecting tube, the second liquid collecting tube, the third liquid collecting tube and the fourth liquid collecting tube at intervals along the axial direction and used for mounting the heat exchange tubes.
Preferably, the second liquid collecting pipe assembly is connected with a refrigerant inlet and a refrigerant outlet, one of the cylindrical inner cavity of the third liquid collecting pipe and the cylindrical inner cavity of the fourth liquid collecting pipe is communicated with the refrigerant inlet, and the other one of the cylindrical inner cavity of the third liquid collecting pipe and the cylindrical inner cavity of the fourth liquid collecting pipe is communicated with the refrigerant outlet.
Preferably, the number of the first through holes and the number of the second through holes are both 30% -40% of the number of the heat exchange tubes.
Another object of the utility model is to provide a vehicle air conditioning system, this vehicle air conditioning system have higher pressure resistance and heat transfer performance.
To achieve the purpose, the utility model adopts the following technical proposal:
an automobile air conditioning system is characterized by comprising the heat exchanger in any scheme.
The utility model has the advantages that:
the utility model provides a heat exchanger, through setting the inner chamber of first collector tube, second collector tube, third collector tube and fourth collector tube to cylindrical inner chamber, set up a plurality of cross-sections as circular refrigerant runners in the heat exchange tube, first collector tube and second collector tube connect and communicate through first connecting portion simultaneously, have improved the pressure resistance and the reliability of this heat exchanger, thus has improved the fail safe nature of heat exchanger, and then has guaranteed the safe and reliable operation of the vehicle air conditioning system that adopts carbon dioxide as the refrigerant; meanwhile, the first liquid collecting pipe and the second liquid collecting pipe are connected through the first connecting part, so that the distance between the adjacent first heat exchange pipe set and the second heat exchange pipe set can be controlled, the integral thickness of the heat exchanger can be controlled, the structure of the heat exchanger is more compact, and the effective heat exchange area of the heat exchanger is increased; the heat exchange tubes are internally provided with a plurality of circular refrigerant channels, so that the heat exchange tubes are suitable for the heat transfer, thermodynamic characteristics and flow characteristics of carbon dioxide refrigerants, the heat exchange performance of the heat exchanger is improved, and the efficient operation of an automobile air conditioning system adopting carbon dioxide as a refrigerant is further ensured.
Drawings
Fig. 1 is a schematic perspective view of a heat exchanger according to an embodiment of the present invention;
fig. 2 is a front view of a heat exchanger according to an embodiment of the present invention;
fig. 3 is a top view of a heat exchanger according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 5 is a cross-sectional view of a first header assembly of a heat exchanger provided in an embodiment of the present invention;
fig. 6 is a schematic perspective view of a first header assembly of a heat exchanger according to an embodiment of the present invention;
fig. 7 is a schematic perspective view of a second liquid collecting tube of the heat exchanger according to the embodiment of the present invention;
FIG. 8 is a top view of a first header assembly of a heat exchanger according to an embodiment of the present invention;
fig. 9 is a schematic view of a heat exchange tube of a heat exchanger according to an embodiment of the present invention.
In the figure:
1. a first header assembly; 11. a first liquid collection pipe; 12. a second liquid collecting pipe;
2. a first connection portion; 21. a first planar protrusion; 211. a first through hole; 22. a second planar projection; 221. a second through hole;
3. a second header assembly; 31. a third liquid collecting pipe; 32. a fourth liquid collecting pipe;
4. a heat exchange tube set; 41. a first heat exchange tube set; 42. a second heat exchange tube set; 43. refrigerant flow channel
5. A refrigerant inlet;
6. a refrigerant outlet;
7. heat exchange fins;
100. and a heat exchange tube mounting groove.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The embodiment of the utility model provides a heat exchanger, this heat exchanger can utilize carbon dioxide to be applied to vehicle air conditioning system as the refrigerant in, as shown in fig. 1-3, this heat exchanger includes first collector subassembly 1, first connecting portion 2, second collector subassembly 3, heat exchange tube group 4, refrigerant import 5 and refrigerant export 6. Wherein, first liquid collecting pipe subassembly 1 and the parallel interval setting of second liquid collecting pipe subassembly 3, heat exchange tube group 4 sets up between first liquid collecting pipe subassembly 1 and second liquid collecting pipe subassembly 3 to with first liquid collecting pipe subassembly 1 and the intercommunication of second liquid collecting pipe subassembly 3, heat exchange tube group 4 includes a plurality of heat exchange tubes. The first header assembly 1 comprises a first header pipe 11 and a second header pipe 12 which are communicated with each other, the second header assembly 3 comprises a third header pipe 31 and a fourth header pipe 32 which are not communicated with each other, and the first header pipe 11, the second header pipe 12, the third header pipe 31 and the fourth header pipe 32 are identical in structure. The refrigerant inlet 5 is provided in the third header pipe 31 to introduce the carbon dioxide refrigerant, and the refrigerant outlet 6 is provided in the fourth header pipe 32 to discharge the carbon dioxide refrigerant. The carbon dioxide refrigerant flows in from the refrigerant inlet 5, sequentially flows through the third liquid collecting pipe 31, the heat exchange pipe and the first liquid collecting pipe 11, sequentially flows through the second liquid collecting pipe 12, the heat exchange pipe and the fourth liquid collecting pipe 32, and finally flows out from the refrigerant outlet 6 to leave the heat exchanger.
Specifically, the first header pipe 11 and the second header pipe 12 are connected in parallel, and the outer contour main bodies are all cylindrical and have cylindrical inner cavities. Optionally, the diameters of the inner cavities of the first header pipe 11 and the second header pipe 12 range from 10mm to 16mm, and the skilled person can select the diameters according to actual situations. In the present embodiment, the inner cavity diameters of the first header pipe 11 and the second header pipe 12 are preferably 13 mm. Optionally, the thickness of the first header pipe 11 and the second header pipe 12 ranges from 2mm to 3mm, and those skilled in the art can select the thickness according to actual situations. Preferably, the wall thickness of the first header pipe 11 and the second header pipe 12 is 2.5 mm. In this embodiment, the material of the first header pipe 11 and the second header pipe 12 is 3 series aluminum alloy or 6 series aluminum alloy, so that the heat exchanger has excellent heat conduction performance. Preferably, the first header pipe 11 and the second header pipe 12 are manufactured by adopting an extrusion molding process, so that the manufacturing is easy, the manufacturing cost is low, and the mass production is facilitated.
The first connecting part 2 is connected between the first liquid collecting pipe 11 and the second liquid collecting pipe 12, an inner cavity of the first liquid collecting pipe 11 and an inner cavity of the second liquid collecting pipe 12 are communicated, the first liquid collecting pipe 11 and the second liquid collecting pipe 12 are connected to form a whole, and the pressure resistance and the connection reliability of the heat exchanger can be improved.
Specifically, referring to fig. 6 to 8, the first connection part 2 includes a first planar protrusion 21 disposed on the first header pipe 11 and a second planar protrusion 22 disposed on the second header pipe 12, and the first planar protrusion 21 and the second planar protrusion 22 are attached to each other. In the present embodiment, as shown in fig. 6, the first planar protrusions 21 are continuously provided in the axial direction of the first header pipe 11; as shown in fig. 7, the second planar protrusions 22 are continuously provided in the axial direction of the second header pipe 12, which can enhance the coupling strength between the first header pipe 11 and the second header pipe 12, thereby enhancing the pressure resistance and reliability of the heat exchanger. In another embodiment, the first planar projections 21 are spaced axially of the first header 11 and the second planar projections 22 are spaced axially of the second header 12. In the present embodiment, the first planar projection 21 and the first header pipe 11 are integrally extruded, and the second planar projection 22 and the second header pipe 12 are integrally extruded. In other embodiments, the first planar protrusion 21 and the first header pipe 11 may be formed separately, and the second planar protrusion 22 and the second header pipe 12 may be formed separately.
Preferably, the first plane projection 21 and the second plane projection 22 are welded, which is beneficial to improving the connection strength of the connection part, thereby improving the pressure resistance of the heat exchanger. In the present embodiment, the widths of the projection planes of the first planar projection 21 and the second planar projection 22 are equal, and the range is 6mm to 10mm, which is beneficial to ensure good welding between the first planar projection 21 and the second planar projection 22, and preferably, the widths of the projection planes of the first planar projection 21 and the second planar projection 22 are 8 mm. In this embodiment, the projection plane of the first planar projection 21 does not exceed the outer contour line of the first header 11, and the projection plane of the second planar projection 22 does not exceed the outer contour line of the second header 12. Preferably, the convex plane of the first plane bulge 21 is tangent to the outer contour line of the first header pipe 11, and the convex plane of the second plane bulge 22 is tangent to the outer contour line of the second header pipe 12, so that the positions of the first header pipe 11 and the second header pipe 12 can be closer on the basis of ensuring the pressure resistance of the heat exchanger, the structure of the heat exchanger is more compact, and the improvement of the effective heat exchange area in the unit volume of the heat exchanger is facilitated.
In this embodiment, as shown in fig. 4 and 5, the first planar protrusion 21 is provided with a plurality of first through holes 211 communicated with the inner cavity of the first header pipe 11, the second planar protrusion 22 is provided with a plurality of second through holes 221 communicated with the inner cavity of the second header pipe 12, and the first through holes 211 and the second through holes 221 are equal in number and are communicated in a one-to-one correspondence manner. Preferably, the number of the first through holes 211 and the second through holes 221 is 30% -40% of the number of the heat exchange tubes, so that the flowing and heat exchange of carbon dioxide refrigerants can be ensured, and the pressure resistance of the heat exchanger can be improved to the maximum extent. Preferably, the first through hole 211 and the second through hole 221 are circular holes and are formed by stamping and forming, so that the manufacturing is facilitated. Furthermore, the axes of the first through hole 211 and the second through hole 221 are overlapped, which is beneficial to reducing the flow resistance of the carbon dioxide refrigerant between the first through hole 211 and the second through hole 221. Preferably, the diameters of the first through hole 211 and the second through hole 221 are equal, and the diameter ranges from 3mm to 6mm, which is beneficial to the circulation of the carbon dioxide refrigerant between the first liquid collecting pipe 11 and the second liquid collecting pipe 12, and the person skilled in the art can select the diameter according to the actual situation. In the present embodiment, the diameters of the first through hole 211 and the second through hole 221 are preferably 5 mm.
In this embodiment, the third header pipe 31 and the fourth header pipe 32 are also disposed in parallel and connected to each other, and the third header pipe 31 and the fourth header pipe 32 have the same structure as the first header pipe 11 and the second header pipe 12, and are not described herein again. Further, the third header pipe 31 and the fourth header pipe 32 are connected to each other by a second connection portion. The second connection part has a structure substantially the same as that of the first connection part 2 except that no through hole is provided in the second connection part so that the inner cavity of the third header pipe 31 and the inner cavity of the fourth header pipe 32 are not communicated with each other. The other structures of the second connection portion are the same as those of the first connection portion 2, and are not described herein again. The second connecting part is used for enhancing the connecting strength between the third liquid collecting pipe 31 and the fourth liquid collecting pipe 32, so that the pressure resistance and the reliability of the heat exchanger are enhanced, the structure of the heat exchanger is more compact, and the effective heat exchange area in the unit volume of the heat exchanger is favorably improved.
The heat exchange tube group 4 includes a first heat exchange tube group 41 and a second heat exchange tube group 42, one end of the first heat exchange tube group 41 is communicated with the first header pipe assembly 1, the other end is communicated with one of the third header pipe 31 and the fourth header pipe 32, one end of the second heat exchange tube group 42 is communicated with the first header pipe assembly 1, and the other end is communicated with the other of the third header pipe 31 and the fourth header pipe 32. In the present embodiment, as shown in fig. 1, one end of the first heat exchange tube group 41 is communicated with the first header pipe 11, the other end is communicated with the third header pipe 31, one end of the second heat exchange tube group 42 is communicated with the second header pipe 12, and the other end is communicated with the fourth header pipe 32, and in this structure, the first heat exchange tube group 41 and the second heat exchange tube group 42 are parallel to each other, which facilitates the assembly and manufacture of the heat exchanger, and also facilitates the installation of the subsequent additional structure on the heat exchanger. In another embodiment, the first heat exchange tube group 41 has one end communicating with the second header pipe 12 and the other end communicating with the third header pipe 31, and the second heat exchange tube group 42 has one end communicating with the first header pipe 11 and the other end communicating with the fourth header pipe 32, in which structure the first heat exchange tube group 41 and the second heat exchange tube group 42 are arranged to intersect.
As shown in fig. 1 to 4, each of the first heat exchange tube group 41 and the second heat exchange tube group 42 includes a plurality of heat exchange tubes arranged in parallel and at intervals in an axial direction of the first header assembly 1 and the second header assembly 3, the two sets of heat exchange tubes are equal in number, and the axial direction of the heat exchange tubes is perpendicular to the axial direction of the first header assembly 1. In the present embodiment, as shown in fig. 9, the heat exchange tube is provided with a plurality of refrigerant channels 43 having a circular cross section. Preferably, the heat exchange tube is a flat heat exchange tube, which is beneficial to enlarging the contact area between the heat exchange tube and the outside air and enhancing the heat exchange capability of the heat exchanger. More preferably, the material of the flat heat exchange tube is 1 series aluminum alloy or 3 series aluminum alloy, so that the heat exchanger has excellent heat conducting performance, and the flat heat exchange tube is processed and manufactured by adopting an extrusion molding process, is easy to manufacture, has low manufacturing cost and is beneficial to mass production.
Preferably, the diameter of the refrigerant channel 43 ranges from 0.5mm to 0.8mm, which is beneficial to the heat transfer and flow of carbon dioxide and can improve the heat exchange performance of the heat exchanger, and the skilled person can select the diameter according to the actual situation. In the present embodiment, the diameter of the refrigerant channel 43 is preferably 0.5 mm. Preferably, the range of the thickness of the outer wall of the flat heat exchange tube is 0.4mm-0.6mm, so that heat exchange between a carbon dioxide refrigerant and outside air through the flat heat exchange tube is facilitated, the pressure resistance of the flat heat exchange tube is improved, the pressure resistance of the heat exchanger is improved, and a person skilled in the art can select the heat exchanger according to actual conditions. The outer wall thickness of the flattened heat exchange tube in this example was 0.5 mm.
Preferably, a plurality of heat exchange tube mounting grooves 100 are axially and uniformly arranged on the first liquid collecting tube 11, the second liquid collecting tube 12, the third liquid collecting tube 31 and the fourth liquid collecting tube 32 at intervals and used for mounting flat heat exchange tubes, and the heat exchange tube mounting grooves 100 are processed and manufactured by adopting a stamping forming method, so that the processing is convenient, and the production efficiency is high. In this embodiment, the heat exchange tube mounting grooves 100 on the first header pipe 11, the second header pipe 12, the third header pipe 31 and the fourth header pipe 32 are all arranged at equal intervals along the respective axial direction, so that the spacing distance between the adjacent flat heat exchange tubes is equal, the arrangement of the heat exchange tubes is more compact, and the increase of the effective heat exchange area in the unit volume of the heat exchanger is facilitated.
In this embodiment, as shown in fig. 1 to fig. 3, a plurality of rows of heat exchange fins 7 are arranged between two vertically adjacent flat heat exchange tubes at equal intervals along the axial direction of the flat heat exchange tubes, and the heat dissipation surfaces of the heat exchange fins 7 are perpendicular to the axial direction of the flat heat exchange tubes, so that the effective heat exchange area of the heat exchanger can be increased, and the occupied space of the heat exchanger is not increased.
The utility model discloses a heat exchanger is in the assembly completion back, seals the processing through the hookup location of whole brazing technology to all parts. In this embodiment, a layer of 4-series aluminum alloy brazing filler metal is sprayed on the outer surface of the first header assembly 1 and the second header assembly 3. The value range of the thickness ratio of the brazing filler metal (the ratio of the thickness of the brazing filler metal to the sum of the thickness of the brazing filler metal and the thickness of the pipe wall) is 4% -6%, preferably, the thickness ratio of the brazing filler metal is 5%, the requirement of a brazing process can be met, and the welding strength and stability are guaranteed. Then, the first header pipe 11 and the second header pipe 12 are directly welded and connected by the first connection part 2, and the third header pipe 31 and the fourth header pipe 32 are welded and connected by the second connection part. And flat heat exchange tubes are directly welded on the plurality of heat exchange tube mounting grooves 100 on the first liquid collecting tube 11, the second liquid collecting tube 12, the third liquid collecting tube 31 and the fourth liquid collecting tube 32.
In another embodiment, the outer surface of the first and second header assemblies 1, 3 is not sprayed with brazing filler metal. Instead, a 4-series aluminum alloy brazing filler metal sheet is placed between the first planar projection 21 and the second planar projection 22 of the first connecting portion 2 and welded, and a 4-series aluminum alloy brazing filler metal sheet is also placed between the third planar projection and the fourth planar projection of the second connecting portion and welded. Then, a certain amount of brazing filler metal is sprayed on the surface of the flat heat exchange tube, and the flat heat exchange tube is welded to the heat exchange tube installation groove 100.
The utility model discloses a first collector subassembly 1, second collector subassembly 3 and flat heat exchange tube all adopt current ripe technology machine-shaping, and the heat exchanger adopts whole brazing process to process, is favorable to the big batch and the high efficiency production of this heat exchanger, can improve the product quality and the reliability of this heat exchanger, reduces the manufacturing cost of product.
The utility model provides a vehicle air conditioning system uses above-mentioned heat exchanger, can utilize carbon dioxide as the refrigerant, and this vehicle air conditioning system is fit for heat transfer, thermodynamic characteristic and the flow characteristic of carbon dioxide refrigerant, and pressure resistance and reliability are high moreover, can high-efficient safe steady operation.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A heat exchanger, comprising:
the first header assembly (1) comprises a first header pipe (11) and a second header pipe (12) which are communicated with each other;
a first connection part (2) connected between the first header pipe (11) and the second header pipe (12) and configured to be able to communicate an inner cavity of the first header pipe (11) and an inner cavity of the second header pipe (12);
the second liquid collecting pipe assembly (3) is arranged in parallel with the first liquid collecting pipe assembly (1) at intervals, and the second liquid collecting pipe assembly (3) comprises a third liquid collecting pipe (31) and a fourth liquid collecting pipe (32) which are not communicated with each other;
a heat exchange tube group (4) including a first heat exchange tube group (41) and a second heat exchange tube group (42), one end of the first heat exchange tube group (41) communicating with the first header assembly (1) and the other end communicating with one of the third header pipe (31) and the fourth header pipe (32); one end of the second heat exchange tube group (42) is communicated with the first liquid collecting tube assembly (1), the other end of the second heat exchange tube group is communicated with the other one of the third liquid collecting tube (31) and the fourth liquid collecting tube (32), the first heat exchange tube group (41) and the second heat exchange tube group (42) respectively comprise a plurality of heat exchange tubes, and a plurality of refrigerant flow channels (43) are arranged on the heat exchange tubes.
2. A heat exchanger according to claim 1, characterised in that the first connection (2) comprises a first planar projection (21) provided on the first header pipe (11) and a second planar projection (22) provided on the second header pipe (12), the first planar projection (21) and the second planar projection (22) being in abutting engagement.
3. The heat exchanger according to claim 2, characterized in that the first planar projection (21) is continuously provided in the axial direction of the first header pipe (11), and the second planar projection (22) is continuously provided in the axial direction of the second header pipe (12).
4. The heat exchanger according to claim 2, characterized in that a plurality of first through holes (211) communicating with the cylindrical inner cavity of the first header pipe (11) are provided on the first planar projection (21), a plurality of second through holes (221) communicating with the cylindrical inner cavity of the second header pipe (12) are provided on the second planar projection (22), and the number of the first through holes (211) and the second through holes (221) is equal and in one-to-one correspondence.
5. A heat exchanger according to claim 2, characterized in that the projection plane of the first planar projection (21) is tangential to the outer tube wall of the first header (11) and the projection plane of the second planar projection (22) is tangential to the outer tube wall of the second header (12).
6. The heat exchanger as claimed in claim 1, wherein the cross-sectional shape of the refrigerant flow channel (43) is a circle, and the diameter of the circle is 0.5mm-0.8 mm.
7. The heat exchanger as claimed in claim 1, wherein a plurality of heat exchange tube mounting grooves (100) are axially and uniformly spaced on the first header pipe (11), the second header pipe (12), the third header pipe (31) and the fourth header pipe (32) for mounting the heat exchange tubes.
8. The heat exchanger according to claim 1, wherein a refrigerant inlet (5) and a refrigerant outlet (6) are connected to the second header assembly (3), and one of the cylindrical inner cavity of the third header pipe (31) and the cylindrical inner cavity of the fourth header pipe (32) communicates with the refrigerant inlet (5) and the other communicates with the refrigerant outlet (6).
9. The heat exchanger according to claim 4, wherein the number of the first through holes (211) and the second through holes (221) is 30-40% of the number of the heat exchange tubes.
10. An automotive air conditioning system, characterized in that it comprises a heat exchanger according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920875621.2U CN210101256U (en) | 2019-06-11 | 2019-06-11 | Heat exchanger and automobile air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920875621.2U CN210101256U (en) | 2019-06-11 | 2019-06-11 | Heat exchanger and automobile air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210101256U true CN210101256U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920875621.2U Expired - Fee Related CN210101256U (en) | 2019-06-11 | 2019-06-11 | Heat exchanger and automobile air conditioning system |
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| CN (1) | CN210101256U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228348A (en) * | 2019-06-11 | 2019-09-13 | 上海加冷松芝汽车空调股份有限公司 | A kind of heat exchanger and automotive air-conditioning system |
| CN114440694A (en) * | 2022-02-17 | 2022-05-06 | 上海加冷松芝汽车空调股份有限公司 | Collecting pipe, heat exchanger and air conditioner |
-
2019
- 2019-06-11 CN CN201920875621.2U patent/CN210101256U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228348A (en) * | 2019-06-11 | 2019-09-13 | 上海加冷松芝汽车空调股份有限公司 | A kind of heat exchanger and automotive air-conditioning system |
| CN114440694A (en) * | 2022-02-17 | 2022-05-06 | 上海加冷松芝汽车空调股份有限公司 | Collecting pipe, heat exchanger and air conditioner |
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Granted publication date: 20200221 Termination date: 20200611 |