CN217303678U - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
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- CN217303678U CN217303678U CN202221142363.5U CN202221142363U CN217303678U CN 217303678 U CN217303678 U CN 217303678U CN 202221142363 U CN202221142363 U CN 202221142363U CN 217303678 U CN217303678 U CN 217303678U
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- flat tube
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- cooling liquid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a heat exchanger, including first coolant liquid cavity, second coolant liquid cavity, first flat pipe assembly, the flat pipe assembly of second, first mass flow subassembly and second mass flow subassembly, the one end of first coolant liquid cavity is provided with first coolant liquid interface, the second coolant liquid cavity with first coolant liquid cavity sets up side by side, the one end of second coolant liquid cavity is provided with the second coolant liquid interface, second coolant liquid interface and first coolant liquid interface are located same end, be provided with liquid flow channel between second coolant liquid cavity and the first coolant liquid cavity, liquid flow channel is located the one end of keeping away from first coolant liquid interface and second coolant liquid interface. The structure is provided with the two independent cooling liquid chambers, the two cooling liquid chambers are communicated through the liquid flow channel, in the working process of the heat exchanger, the series flow phenomenon cannot occur between the two cooling liquid chambers, the heat exchange loss is reduced, and the heat exchange effect is improved.
Description
Technical Field
The utility model relates to a heat exchanger.
Background
In the prior art, most of heat exchangers applied to a battery cooling system are plate heat exchangers, which exchange heat between a coolant and a refrigerant. Generally, the working pressure of the refrigerant is about 3MPa, which makes it difficult to satisfy the high-pressure working environment of the natural working medium refrigerant R744 (almost 10 times as high as that of the chlorofluorocarbon refrigerant), for example, the heat exchanger used in a battery cooling system disclosed in chinese patent publication No. CN111033875A has a defect that it is not suitable for the high-pressure environment.
For another example, the heat exchanger assembly disclosed in the chinese utility model with publication number CN209326434U is essentially a parallel flow evaporator, and only the refrigerant of forced convection is changed from air to coolant, and the design of its water path has the risk of crossing cavities, which easily causes heat exchange loss.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to solve the water route design of heat exchanger among the prior art and easily cluster the chamber and the lower technical defect of refrigerant operating pressure.
In order to solve the technical problem, the utility model provides a technical scheme as follows: a heat exchanger comprising at least:
one end of the first cooling liquid cavity is provided with a first cooling liquid interface;
the second cooling liquid cavity is arranged side by side with the first cooling liquid cavity, a second cooling liquid interface is arranged at one end of the second cooling liquid cavity, the second cooling liquid interface and the first cooling liquid interface are positioned at the same end, a liquid flow channel is arranged between the second cooling liquid cavity and the first cooling liquid cavity, and the liquid flow channel is positioned at one end far away from the first cooling liquid interface and the second cooling liquid interface;
the first flat pipe assembly penetrates through the first cooling liquid cavity and comprises a plurality of flat pipes which are stacked;
the second flat pipe assembly penetrates through the interior of the second cooling liquid cavity and comprises a plurality of flat pipes which are stacked;
the first collecting assembly is provided with a first refrigerant interface and a second refrigerant interface, the first collecting assembly is connected with one end of the first cooling liquid cavity, one end of the second cooling liquid cavity, one end of the first flat tube assembly and one end of the second flat tube assembly, the first refrigerant interface is communicated with the first flat tube assembly, and the second refrigerant interface is communicated with the second flat tube assembly; and
and the second current collecting assembly is arranged opposite to the first current collecting assembly, and is connected with the first cooling liquid cavity, the second cooling liquid cavity, the first flat tube assembly and the other end of the second flat tube assembly.
In a preferred embodiment, a fin is arranged between the adjacent flat tubes.
In a preferred embodiment, the flow channel is provided on the base plate on the opposite side to the first coolant connection and the second coolant connection.
In a preferred embodiment, the first collecting assembly is disposed at one end of the first cooling liquid chamber and the second cooling liquid chamber away from the first cooling liquid interface and the second cooling liquid interface.
In a preferred embodiment, a connecting cavity communicating the first flat tube assembly and the second flat tube assembly is arranged in the second collecting assembly.
In a preferred embodiment, the first flat tube assembly is divided into at least two flat tube assemblies with opposite refrigerant flow directions from top to bottom, a communication cavity for communicating the flat tube assemblies is provided in the second collecting assembly, and the first refrigerant interface is communicated with a forward flat tube assembly in which the refrigerant flows from the first collecting assembly to the second collecting assembly.
In a preferred embodiment, the second flat tube assembly is divided into at least two groups of flat tube assemblies with opposite refrigerant flow directions from top to bottom, a communication cavity for communicating the flat tube assemblies is arranged in the second collecting assembly, the second refrigerant interface is communicated with a reverse flat tube assembly in which the refrigerant flows from the second collecting assembly to the first collecting assembly, and a connecting channel for communicating the reverse flat tube assembly in the first flat tube assembly with the forward flat tube assembly in the second flat tube assembly is arranged in the first collecting assembly.
In a preferred embodiment, the first flat tube set is divided into three flat tube sets from top to bottom, wherein the first flat tube set and the third flat tube set are forward flat tube sets, and the second flat tube set is a reverse flat tube set.
In a preferred embodiment, the second flat tube assembly is divided into three flat tube groups from top to bottom, wherein the first flat tube group and the third flat tube group are reverse flat tube groups, and the second flat tube group is a forward flat tube group.
In a preferred embodiment, the thickness of the wall of the flat tubes is not less than 0.3 mm.
Compared with the prior art, the heat exchanger of the embodiment has the following beneficial effects:
(1) set up two independent coolant liquid cavities, be first coolant liquid cavity and second coolant liquid cavity respectively, only through flow channel intercommunication between two coolant liquid cavities, in the heat exchanger working process, can not take place the phenomenon of streaming between two coolant liquid cavities, reduced the heat transfer loss, promoted the heat transfer effect.
(2) Through dividing into the flat nest of tubes of at least two sets of refrigerant flow direction opposite with first flat nest of tubes and second flat nest of tubes top-down, very big promotion the stroke of refrigerant, promoted heat exchange efficiency, reduced the heat transfer loss.
(3) The wall thickness of the micro-channel of the flat tube is set to be not less than 0.3 mm, so that the working pressure of the refrigerant is improved by increasing the wall thickness of the micro-channel, the refrigerant can adapt to more refrigerant types, and the application range is wider.
Drawings
FIG. 1 is a schematic view showing an external structure of a heat exchanger according to the present embodiment;
FIG. 2 is a schematic view showing the construction of the heat exchanger according to the present embodiment in an exploded state;
FIG. 3 is a schematic structural diagram of a cooling liquid chamber in the heat exchanger according to the present embodiment;
FIG. 4 is a schematic diagram of the cooling fluid chamber of FIG. 3 in an exploded configuration;
FIG. 5 is a cross-sectional view of the heat exchanger in the present embodiment at the position of the liquid flow path;
FIG. 6 is a schematic longitudinal cross-sectional view of a heat exchanger of the present embodiment at a first refrigerant interface location;
FIG. 7 is a schematic diagram of an exploded view of the first manifold assembly of the heat exchanger of the present embodiment;
fig. 8 is a partial structural schematic view of a flat tube in the heat exchanger according to the embodiment;
fig. 9 is a schematic view of a coolant flow path and a refrigerant flow path of the heat exchanger according to the present embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, an integral connection, or a detachable connection; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.
A heat exchanger, as shown in figures 1 and 2, comprises a first collecting assembly 40 and a second collecting assembly 50 which are oppositely arranged, and a first cooling liquid chamber 10 and a second cooling liquid chamber 20 are arranged between the first collecting assembly 40 and the second collecting assembly 50.
The first cooling liquid chamber 10 and the second cooling liquid chamber 20 are independent cooling liquid chambers arranged side by side, a first cooling liquid interface 12 is arranged at the upper part of one end of the first cooling liquid chamber 10, and a second cooling liquid interface 22 is arranged at one end of the second cooling liquid chamber 20. Preferably, the second cooling liquid port 22 is located at the same end as the first cooling liquid port 12, and as shown in fig. 3, a liquid flow channel 31 for communicating the second cooling liquid chamber 20 with the first cooling liquid chamber 10 is provided at an end away from the second cooling liquid port 22 and the first cooling liquid port 12.
As a preferred embodiment of the present embodiment, as shown in fig. 3 and 4, the first cooling liquid chamber 10 includes a U-shaped first shell 11, the second cooling liquid chamber 20 includes a U-shaped second shell 21, the openings of the first shell 11 and the second shell 21 are respectively connected with the bottom plate 31 in a sealing manner, and two ends of the first shell 11 and the second shell 21 are respectively connected with the first current collecting assembly 40 and the second current collecting assembly 50 in a sealing manner, so as to form the first cooling liquid chamber 10 and the second cooling liquid chamber 20 which are independent of each other.
As shown in fig. 3-5, the liquid flow channel 31 is preferably located on the bottom plate 30 at the opposite side of the second cooling liquid connector 22 and the first cooling liquid connector 12.
In this embodiment, as shown in fig. 2 and 5, the first flat tube assembly 61 includes a plurality of flat tubes 60 stacked and penetrating the interior of the first cooling liquid chamber 10 along the length direction, and both ends of the flat tubes are respectively connected to the first current collecting assembly 40 and the second current collecting assembly 50.
The second flat tube assembly 62 includes a plurality of flat tubes 60 stacked and penetrating the inside of the second cooling liquid chamber 20 along the length direction, and both ends of the flat tubes are respectively connected to the first current collecting assembly 40 and the second current collecting assembly 50.
In this embodiment, the first collecting assembly 40 is provided with a first refrigerant interface 41 and a second refrigerant interface 42, wherein the first refrigerant interface 41 is communicated with the first flat tube assembly 61, and the second refrigerant interface 42 is communicated with the second flat tube assembly 62. In the present embodiment, the refrigerant forms a refrigerant flow channel between the first refrigerant interface 41, the first collecting assembly 40, the first flat tube assembly 61, the second collecting assembly 50, the second flat tube assembly 62, and the second refrigerant interface 42.
In this embodiment, a coolant flow passage is formed between the first coolant connection 12, the first coolant chamber 10, the flow channel 31, the second coolant chamber 20, and the second coolant connection 22, and the coolant and the refrigerant exchange heat sufficiently in the first coolant chamber 10 and the second coolant chamber 20.
Preferably, as shown in fig. 2 and 5, a fin 70 is disposed between adjacent flat tubes 60 to increase a heat exchange area and improve a heat exchange effect. It should be noted that the structure of the fins and the flat tubes is a conventional structure in the art, and will not be described in detail here.
The special point of this embodiment lies in, has set up two independent coolant liquid cavities, is first coolant liquid cavity 10 and second coolant liquid cavity 20 respectively, only communicates through flow channel 31 between two coolant liquid cavities, and in the heat exchanger working process, the phenomenon of streaming can not take place between two coolant liquid cavities, has reduced the heat transfer loss, has promoted the heat transfer effect.
Preferably, in the present embodiment, the first collecting assembly 40 is disposed at one end of the first cooling liquid chamber 10 and the second cooling liquid chamber 20 far away from the first cooling liquid interface 12 and the second cooling liquid interface 22, so that the cooling liquid interface and the refrigerant interface are respectively disposed at two ends of the heat exchanger, thereby structurally facilitating space layout and connection.
In this embodiment, the refrigerant flow channel may be provided in different flow channel forms, for example, a connection cavity communicating the first flat tube assembly 61 and the second flat tube assembly 62 is provided in the second collecting assembly 50, so that the refrigerant flow channel is that the refrigerant flow channel enters the first collecting assembly 40 from the first refrigerant interface 41, passes through the first flat tube assembly 61, the connection cavity in the second collecting assembly 50, the second flat tube assembly 62 and the first collecting assembly 40 in sequence, and then flows out from the second refrigerant interface 42.
It should be noted that, in the above refrigerant flow passage form, the stroke of the refrigerant in the heat exchanger is short, and the heat exchange efficiency needs to be improved.
For this purpose, the present embodiment provides another refrigerant flow channel structure, as shown in fig. 6 and 7, the first flat tube assembly 61 and the second flat tube assembly 62 are divided into at least two groups of flat tube assemblies with opposite refrigerant flow directions from top to bottom, and the second collecting assembly 50 is provided with a communicating chamber 51 for respectively communicating the flat tube groups of the first flat tube assembly 61 and the second flat tube assembly 62. Preferably, in the present embodiment, the first flat tube assembly 61 and the second flat tube assembly 62 are divided into three groups of flat tube assemblies.
In this embodiment, the refrigerant flow direction is set to be a forward direction from the first collecting assembly to the second collecting assembly, and the refrigerant flow direction is set to be a reverse direction from the second collecting assembly to the first collecting assembly.
In the present embodiment, as shown in fig. 6, 7 and 9, the first flat tube group and the third flat tube group in the first flat tube assembly 61 are forward flat tube groups, the second flat tube group is reverse flat tube groups, and the first manifold assembly 40 is provided with a first channel 43 communicating with the first flat tube group, a second channel 45 communicating with the third flat tube group, and a third channel 44 communicating with the first channel 43 and the second channel 45. At the location shown in the third channel 44, a separator plate 46 is provided to separate the second flat tube set from the third channel 44.
Correspondingly, the first flat tube group and the third flat tube group of the second flat tube group 62 are reverse flat tube groups, and the second flat tube group is a forward flat tube group. And a connecting channel III 4023 for communicating the reverse flat tube group in the first flat tube assembly with the forward flat tube group in the second flat tube assembly is arranged in the first collecting assembly 40.
It should be noted that, in the first collecting assembly 40, the second flat tube assembly 62 and the second refrigerant interface 42 are also provided with the corresponding first channel 43, second channel 45 and third channel 44.
A preferred first current collector assembly 40 of this embodiment is constructed as shown in fig. 7, and includes an outer substrate 401 having a first channel 43, a second channel 45, and a third channel 44, an inner substrate 403 for fixing the first flat tube assembly and the second flat tube assembly, and an intermediate substrate 402 having a first connecting channel 4021 for communicating the first flat tube assembly of the first flat tube assembly 61 and the second flat tube assembly 62 with the first channel 43, a second connecting channel 4022 for communicating the third flat tube assembly of the first flat tube assembly 61 and the second flat tube assembly 62 with the second channel 45, and a third connecting channel 4023 for communicating the second flat tube assembly of the first flat tube assembly 61 and the second flat tube assembly 62.
In the above embodiment, the refrigerant flow channels are as shown in fig. 9, the refrigerant enters from the first refrigerant port 41, enters the first flat tube group and the third flat tube group in the first flat tube assembly 61 through the first channel 43 and the second channel 45, enters the second flat tube group through the communication chamber 51 in the second header assembly 50, enters the second flat tube group in the second flat tube assembly 62 through the third connection channel 4023, enters the first flat tube group and the third flat tube group in the second flat tube assembly 62 through the communication chamber 51 in the second header assembly 50, and finally flows out through the second refrigerant port 42.
Through the runner arrangement, the stroke of the refrigerant is greatly improved, the heat exchange efficiency is improved, and the heat exchange loss is reduced.
As shown in fig. 8, in the present embodiment, the minimum distance from the inner wall of the microchannel 601 of the flat tube 66 to the outer wall of the flat tube is set to the microchannel thickness T, which is not less than 0.3 mm as a particular point of the present embodiment.
In the conventional heat exchanger, the wall thickness T of the micro-channel is usually 0.2-0.3 mm, and the conventional heat exchanger is suitable for conventional refrigerants such as R134/1234yf and the like. In the embodiment, the working pressure of the refrigerant is improved by increasing the wall thickness of the micro-channel. The normal working pressure of the refrigerant side flow is about 3MPa-15MPa, and the highest pressure resistance can reach about 26MPa, so that the heat exchanger of the embodiment can be applied to a new energy automobile cooling liquid loop which takes a natural working medium R744(CO2) as a refrigerant, can be used as a Chiller battery cooler or a waste heat recoverer, and has a wider application range.
In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (10)
1. A heat exchanger, characterized in that it comprises at least:
one end of the first cooling liquid cavity is provided with a first cooling liquid interface;
the second cooling liquid cavity is arranged side by side with the first cooling liquid cavity, a second cooling liquid interface is arranged at one end of the second cooling liquid cavity, the second cooling liquid interface and the first cooling liquid interface are positioned at the same end, a liquid flow channel is arranged between the second cooling liquid cavity and the first cooling liquid cavity, and the liquid flow channel is positioned at one end far away from the first cooling liquid interface and the second cooling liquid interface;
the first flat pipe assembly penetrates through the first cooling liquid cavity and comprises a plurality of flat pipes which are stacked;
the second flat pipe assembly penetrates through the interior of the second cooling liquid cavity and comprises a plurality of flat pipes which are stacked;
the first collecting assembly is provided with a first refrigerant interface and a second refrigerant interface, the first collecting assembly is connected with one end of the first cooling liquid cavity, one end of the second cooling liquid cavity, one end of the first flat tube assembly and one end of the second flat tube assembly, the first refrigerant interface is communicated with the first flat tube assembly, and the second refrigerant interface is communicated with the second flat tube assembly; and
and the second current collecting assembly is arranged opposite to the first current collecting assembly, and is connected with the first cooling liquid cavity, the second cooling liquid cavity, the first flat tube assembly and the other end of the second flat tube assembly.
2. A heat exchanger according to claim 1 wherein fins are provided between adjacent flat tubes.
3. The heat exchanger of claim 1, wherein the flow channel is disposed on the base plate opposite the first coolant port and the second coolant port.
4. The heat exchanger of claim 1, wherein the first manifold assembly is disposed at an end of the first and second coolant chambers distal from the first and second coolant ports.
5. The heat exchanger of claim 4 wherein said second manifold assembly has a connecting chamber therein communicating between said first and second flat tube assemblies.
6. The heat exchanger of claim 4 wherein the first flat tube bank is subdivided into at least two groups of flat tube banks having opposite refrigerant flow directions from top to bottom, and wherein the second header has a communication chamber therein communicating with each of the flat tube banks, the first refrigerant port communicating with a forward flat tube bank in which refrigerant flows from the first header to the second header.
7. The heat exchanger of claim 6 wherein the second flat tube assembly is divided into at least two sets of flat tubes having opposite refrigerant flow directions from top to bottom, the second header assembly having a communication chamber therein communicating with each of the flat tubes, the second refrigerant port communicating with a reverse flat tube set having a refrigerant flow direction from the second header assembly to the first header assembly, the first header assembly having a connecting passage therein for communicating the reverse flat tube set in the first flat tube assembly with the forward flat tube set in the second flat tube assembly.
8. The heat exchanger of claim 7 wherein the first flat tube assembly is divided into three flat tube banks from top to bottom, wherein the first and third flat tube banks are forward flat tube banks and the second flat tube bank is a reverse flat tube bank.
9. The heat exchanger of claim 8 wherein the second flat tube assembly is divided into three flat tube groups from top to bottom, wherein the first and third flat tube groups are reverse flat tube groups and the second flat tube group is a forward flat tube group.
10. A heat exchanger according to any one of claims 1 to 9, wherein the wall thickness of the microchannels of the flat tubes is not less than 0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221142363.5U CN217303678U (en) | 2022-05-12 | 2022-05-12 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221142363.5U CN217303678U (en) | 2022-05-12 | 2022-05-12 | Heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217303678U true CN217303678U (en) | 2022-08-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221142363.5U Active CN217303678U (en) | 2022-05-12 | 2022-05-12 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217303678U (en) |
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2022
- 2022-05-12 CN CN202221142363.5U patent/CN217303678U/en active Active
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