CN211316648U - Micro-channel heat exchanger - Google Patents
Micro-channel heat exchanger Download PDFInfo
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- CN211316648U CN211316648U CN201921534609.1U CN201921534609U CN211316648U CN 211316648 U CN211316648 U CN 211316648U CN 201921534609 U CN201921534609 U CN 201921534609U CN 211316648 U CN211316648 U CN 211316648U
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Abstract
The utility model provides a microchannel heat exchanger, including two headers, a plurality of flat pipes, it is a plurality of flat pipe communicates two perpendicularly between the header, the both ends of flat pipe still communicate respectively to be used for connecting two a plurality of connecting pieces of header, the header diameter that connecting piece one end is connected is less than the flat tub of width that the connecting piece other end is connected, this microchannel heat exchanger not only can improve the header in refrigerant flow rate, can also make the refrigerant that gets into in the flat pipe divide liquid more evenly simultaneously, improves the heat exchanger performance and reduces the refrigerant volume of filling.
Description
Technical Field
The utility model relates to a heat exchanger technical field especially relates to a microchannel heat exchanger.
Background
The assembly can be completed only when the inner diameter of a collecting pipe of the traditional micro-channel heat exchanger is larger than the width of a flat pipe, so that the inner space of the collecting pipe is larger, the flow velocity of a refrigerant in the collecting pipe can be reduced, the refrigerant is subjected to gas-liquid layering when the heat exchanger is used as an evaporator, liquid is uneven when the heat exchanger enters the flat pipe, the performance of the heat exchanger is reduced, and meanwhile the filling amount of the refrigerant is increased.
Patent CN 103245132B's patent discloses a be favorable to reducing microchannel heat exchanger that refrigerant filled volume, provides one kind and rotates 90 with flat tub of tip, reinserts the pressure manifold to this reduces the pressure manifold diameter, reduces the technical scheme of refrigerant volume of filling, but this technical scheme with flat tub of tip rotatory 90 backs, the distance of adjacent two flat pipes is enlarged and is exceeded flat tub of width, is unfavorable for the outside heat transfer of pipe.
Patent CN 201964816U's patent has announced flat pipe of opposite sex mouth of pipe microchannel heat transfer and heat exchanger, provides one kind and turns into the port that the cross-section is shape such as circular, polygon with flat mouthful that has a plurality of microchannels to this reduces pressure manifold diameter, reduces the technical scheme of refrigerant perfusion volume, but this technical scheme's flat tubular construction is complicated, is difficult to process.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at avoiding the weak point among the prior art and providing a microchannel heat exchanger, this microchannel heat exchanger not only can improve the intraductal refrigerant velocity of flow of collector, can also make the refrigerant that gets into in the flat pipe divide liquid more even simultaneously, improves the heat exchanger performance and reduces the refrigerant volume of filling.
The embodiment of the utility model provides a micro-channel heat exchanger, including two headers, a plurality of flat pipe, it is a plurality of flat pipe communicates two perpendicularly between the header, the both ends of flat pipe still communicate respectively to be used for connecting two a plurality of connecting pieces of header, the header diameter that connecting piece one end is connected is less than the flat tub of width that the connecting piece other end is connected.
Furthermore, a collector clamping groove for fixing a collector is formed in one end of the connecting piece, a flat tube clamping groove for fixing a flat tube is formed in the other end of the connecting piece, and a connecting hole for communicating the collector clamping groove and the flat tube clamping groove is formed between the collector clamping groove and the flat tube clamping groove.
Furthermore, a plurality of header holes corresponding to the connecting holes are formed in the header, and the diameter of each header hole is equal to that of each connecting hole.
Furthermore, the cross section of the header clamping groove is semicircular, the outer diameter of the header is the same as the diameter of the header clamping groove, and the diameter of the header clamping groove is smaller than the width of the flat tube clamping groove.
Furthermore, one end of the connecting piece is communicated with the collector through a collector clamping groove, and the other end of the connecting piece is communicated with the flat pipe through a flat pipe clamping groove.
Furthermore, one end of the connecting piece is provided with a convex pipe for fixing the collecting pipe, the other end of the connecting piece is provided with a flat pipe limiting groove for fixing the flat pipe, and a connecting channel for communicating the convex pipe and the flat pipe limiting groove is arranged between the convex pipe and the flat pipe limiting groove.
Furthermore, the convex pipe is a cylindrical convex pipe, the outer diameter of the convex pipe is smaller than that of the collecting pipe, and the outer diameter of the collecting pipe is smaller than the width of the flat pipe limiting groove.
Furthermore, one end of the connecting piece is communicated with the collecting pipe through a convex pipe, and the other end of the connecting piece is communicated with the flat pipe through a flat pipe limiting groove.
Furthermore, the two collecting pipes are respectively a liquid collecting pipe and a gas collecting pipe, one end of the liquid collecting pipe is also communicated with a plurality of liquid collecting pipe inlet and outlet pipes, and one end of the gas collecting pipe is also communicated with a gas collecting pipe inlet and outlet pipe.
Further, still be provided with a plurality of spacers that are used for separating the collector tube on the collector tube, two form a cavity between the adjacent spacer, the cavity is provided with a plurality ofly, singly the intercommunication has one on the cavity the collector tube business turn over pipe compares with prior art the beneficial effects of the utility model are as follows: because the connecting piece is arranged between the collecting pipe and the flat pipe, the diameter of the collecting pipe is smaller than the width of the flat pipe, so that the flow velocity of the refrigerant in the collecting pipe can be improved, the gas-liquid stratification of the refrigerant in the collecting pipe can be slowed down when the evaporator is used, the liquid separation of the refrigerant entering the flat pipe is more uniform, the performance of the heat exchanger is improved, and the filling amount of the refrigerant is reduced.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
Fig. 1 is a schematic perspective view of a microchannel heat exchanger according to a first embodiment of the present invention.
Fig. 2 is a front view of a microchannel heat exchanger according to a first embodiment of the present invention.
Fig. 3 is a schematic perspective view of a connecting member according to a first embodiment of the present invention.
Fig. 4 is a sectional view of a connector according to a first embodiment of the present invention.
Fig. 5 is an assembly cross-sectional view of a header-flat tube connector according to a first embodiment of the present invention.
Fig. 6 is an assembly schematic view of the header-flat tube connector according to the first embodiment of the present invention.
Fig. 7 is a schematic perspective view of a connecting member according to a second embodiment of the present invention.
Fig. 8 is a sectional view of a connector according to a second embodiment of the present invention.
Fig. 9 is an assembly cross-sectional view of a header-flat tube connector according to a second embodiment of the present invention.
Fig. 10 is an assembly view of a header-flat tube connector according to a second embodiment of the present invention.
The figure includes: the collector 1, the collector 11, the spacer 111, the collector inlet and outlet 112, the collector 12, the collector hole 13, the collector inlet and outlet 121, the flat tube 2, the connector 3, the collector slot 4, the flat tube slot 5, the connecting hole 6, the convex tube 7, the flat tube limit slot 8, and the connecting channel 9.
Detailed Description
The invention will be further described with reference to the following examples.
Example one
As shown in fig. 1, an embodiment of the present invention provides a microchannel heat exchanger, including two headers 1 and a plurality of flat tubes 2, the plurality of flat tubes 2 are vertically connected between the two headers 1, two ends of the flat tubes 2 are respectively connected to a plurality of connecting members 3 for connecting the two headers 1, a diameter of the header 1 connected to one end of the connecting member 3 is smaller than a width of the flat tube 2 connected to the other end of the connecting member 3, further, one end of the connecting member 3 is provided with a header slot 4 for fixing the header 1, the other end is provided with a flat tube slot 5 for fixing the flat tube 2, a connecting hole 6 for connecting the header slot 4 and the flat tube slot 5 is disposed between the header slot 4 and the flat tube slot 5, communication between the header and the flat tube can be ensured through the connecting hole 6, meanwhile, because the connecting member 3 is disposed between the header 1 and the flat tube 2, the connecting member 3 has the header slot 4, collector draw-in groove 4 assembles with the mutual block of collector 1, and flat tub of draw-in groove 5 assembles with the mutual block of flat tub of 2 to can make the diameter of collector 1 be less than flat tub of 2 width, and then can improve the refrigerant velocity of flow in the collector 1, can slow down refrigerant gas-liquid layering in the collector tube 11 when making the evaporimeter, make the refrigerant that gets into flat tub of 2 divide liquid more evenly, improve the heat exchanger performance, reduce the refrigerant charge volume simultaneously.
As shown in fig. 1, in the preferred embodiment, the two headers 1 are a header 11 and a header 12, respectively, one end of the header 11 is further communicated with a plurality of header inlet and outlet pipes 112, and one end of the header 12 is further communicated with a header inlet and outlet pipe 121, so as to ensure the normal operation of the microchannel heat exchanger.
As shown in fig. 1, in a preferred embodiment, the header pipe 11 is further provided with a plurality of spacers 111 for separating the header pipe 11, a cavity (not shown) is formed between two adjacent spacers 111, the cavity is provided with a plurality of cavities, and a header pipe inlet and outlet pipe 112 is communicated with a single cavity, when the header pipe 11 is long, the header pipe 11 is separated into a plurality of cavities by the spacers 111, so that the problem of uneven flow distribution can be effectively solved, and the performance of the heat exchanger can be improved.
As shown in fig. 1, in the preferred embodiment, the header 1 is further provided with a plurality of header holes 13 corresponding to the connection holes 6, and the diameter of the header holes 13 is equal to that of the connection holes 6, so that not only can the connection member 3 be positioned, but also the header 1 and the flat tubes 2 can be ensured to be communicated.
As shown in fig. 1, in a preferred embodiment, the cross section of the header clamping groove 4 is semicircular, the outer diameter of the header 1 is the same as the diameter of the header clamping groove 4, and the diameter of the header clamping groove 4 is smaller than the width of the flat tube clamping groove 5, so that the diameter of the header 1 is smaller than the width of the flat tube 2.
As shown in fig. 1, in a preferred embodiment, one end of the connecting member 3 is communicated with the header 1 through the header clamping groove 4, and the other end is communicated with the flat tube 2 through the flat tube clamping groove 5, wherein the header 11 and the header 12 are assembled with the header clamping groove 4 of the connecting member 3, the flat tube 2 is assembled with the flat tube clamping groove 5 of the connecting member 1, header holes 13 formed in the header 11 and the header 12 are arranged corresponding to the connecting holes 103, so that the assembly is simple, and the processing procedures are reduced.
Example two
The difference between the present embodiment and the first embodiment is: the one end of connecting piece 3 is provided with the stand pipe 7 that is used for fixed collector tube 11 and collector tube 12, the other end is provided with the flat tub of spacing groove 8 that is used for fixed flat tub of 2, offer the interface channel 9 that is used for communicateing stand pipe 7 and flat tub of spacing groove 8 between stand pipe 7 and the flat tub of spacing groove 8, furthermore, stand pipe 7 and collector tube 1 intercommunication are passed through to the one end of connecting piece 3, the other end passes through flat tub of spacing groove 8 and flat tub of 2 intercommunications, wherein, the stand pipe 11 and collector tube 12 assemble with the stand pipe 7 of connecting piece 3, flat tub of 8 assembles with the flat tub of spacing groove 8 of connecting piece 1, stand pipe 7 inserts collector tube hole 13, the assembly is simple.
As shown in fig. 1, in a preferred embodiment, the protruding tube 7 is a cylindrical protruding tube 7, the outer diameter of the protruding tube 7 is smaller than the outer diameter of the header 1, and the outer diameter of the header 1 is smaller than the width of the flat tube limiting groove 8, so as to ensure that the diameter of the header 1 is smaller than the width of the flat tube 2.
The advantage of this embodiment is that connecting piece 3 in this embodiment is in the assembling process of collecting pipe 11, gas collecting pipe 12 and flat pipe 2, and is more convenient, simple, convenient for embodiment 1.
The utility model has the advantages as follows: because the connecting piece is arranged between the collecting pipe and the flat pipe, the diameter of the collecting pipe is smaller than the width of the flat pipe, so that the flow velocity of the refrigerant in the collecting pipe can be improved, the gas-liquid stratification of the refrigerant in the collecting pipe can be slowed down when the evaporator is used, the liquid separation of the refrigerant entering the flat pipe is more uniform, the performance of the heat exchanger is improved, and the filling amount of the refrigerant is reduced.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a microchannel heat exchanger, including two headers, a plurality of flat pipe perpendicular intercommunication in two between the header, its characterized in that: the two ends of the flat pipe are respectively communicated with a plurality of connecting pieces used for connecting the two collecting pipes, and the diameter of the collecting pipe connected with one end of each connecting piece is smaller than the width of the flat pipe connected with the other end of each connecting piece.
2. A microchannel heat exchanger as set forth in claim 1 wherein: one end of the connecting piece is provided with a collector clamping groove for fixing a collector, the other end of the connecting piece is provided with a flat tube clamping groove for fixing a flat tube, and a connecting hole for communicating the collector clamping groove and the flat tube clamping groove is formed between the collector clamping groove and the flat tube clamping groove.
3. A microchannel heat exchanger as set forth in claim 2 wherein: the header is also provided with a plurality of header holes corresponding to the connecting holes, and the diameter of each header hole is equal to that of each connecting hole.
4. A microchannel heat exchanger as set forth in claim 2 wherein: the cross section of the header clamping groove is semicircular, the outer diameter of the header is the same as the diameter of the header clamping groove, and the diameter of the header clamping groove is smaller than the width of the flat tube clamping groove.
5. A microchannel heat exchanger as set forth in claim 2 wherein: one end of the connecting piece is communicated with the collecting pipe through a collecting pipe clamping groove, and the other end of the connecting piece is communicated with the flat pipe through a flat pipe clamping groove.
6. A microchannel heat exchanger as set forth in claim 1 wherein: one end of the connecting piece is provided with a convex pipe for fixing the collecting pipe, the other end of the connecting piece is provided with a flat pipe limiting groove for fixing the flat pipe, and a connecting channel for communicating the convex pipe and the flat pipe limiting groove is arranged between the convex pipe and the flat pipe limiting groove.
7. A microchannel heat exchanger as set forth in claim 6 wherein: the convex pipe is a cylindrical convex pipe, the outer diameter of the convex pipe is smaller than that of the collecting pipe, and the outer diameter of the collecting pipe is smaller than the width of the flat pipe limiting groove.
8. A microchannel heat exchanger as set forth in claim 6 wherein: one end of the connecting piece is communicated with the collecting pipe through a convex pipe, and the other end of the connecting piece is communicated with the flat pipe through a flat pipe limiting groove.
9. A microchannel heat exchanger as set forth in claim 1 wherein: the two collecting pipes are respectively a liquid collecting pipe and a gas collecting pipe, one end of the liquid collecting pipe is also communicated with a plurality of liquid collecting pipe inlet and outlet pipes, and one end of the gas collecting pipe is also communicated with a gas collecting pipe inlet and outlet pipe.
10. A microchannel heat exchanger as set forth in claim 9 wherein: the liquid collecting pipe is also provided with a plurality of spacers for separating the liquid collecting pipe, a cavity is formed between every two adjacent spacers, the cavity is provided with a plurality of spacers, and the cavity is communicated with one liquid collecting pipe inlet and outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921534609.1U CN211316648U (en) | 2019-09-16 | 2019-09-16 | Micro-channel heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921534609.1U CN211316648U (en) | 2019-09-16 | 2019-09-16 | Micro-channel heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211316648U true CN211316648U (en) | 2020-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921534609.1U Active CN211316648U (en) | 2019-09-16 | 2019-09-16 | Micro-channel heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211316648U (en) |
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2019
- 2019-09-16 CN CN201921534609.1U patent/CN211316648U/en active Active
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