CN113328118B - Pipe belt type radiator for fuel cell vehicle - Google Patents
Pipe belt type radiator for fuel cell vehicle Download PDFInfo
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- CN113328118B CN113328118B CN202110528545.XA CN202110528545A CN113328118B CN 113328118 B CN113328118 B CN 113328118B CN 202110528545 A CN202110528545 A CN 202110528545A CN 113328118 B CN113328118 B CN 113328118B
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- cell vehicle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
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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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel Cell (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention belongs to the technical field of automobile parts, and provides a pipe belt type radiator for a fuel cell vehicle, which comprises a plurality of layers of flat pipes which are longitudinally arranged, wherein a water inlet and a water outlet are respectively arranged at the two transverse ends of each flat pipe, a metal belt with a wave-shaped longitudinal section is arranged between the two adjacent layers of flat pipes, the wave crest of each metal belt is connected with the surface of one flat pipe of the two adjacent layers of flat pipes, the wave trough of each metal belt is connected with the surface of the other flat pipe of the two adjacent layers of flat pipes, a plurality of fin groups are transversely arranged on each metal belt, each fin group comprises a plurality of fins, and the fins are bent at a certain angle; when the heat exchanger works, air can longitudinally deflect to two opposite surfaces of the adjacent two layers of flat tubes when flowing through the fins, so that the heat exchange of the surfaces of the flat tubes is strengthened. The heat radiator is provided with the louver type fins bent at a certain angle on the metal belt, so that the heat exchange effect is enhanced, the heat exchange efficiency is improved, and the heat radiator is simple in structure and convenient to process.
Description
Technical Field
The invention belongs to the technical field of automobile parts, and particularly relates to a tubular belt type radiator for a fuel cell vehicle.
Background
60% of heat of the traditional fuel oil automobile is taken away through tail gas, only 30% of heat is dissipated through a radiator, and for a full-power fuel cell automobile, as the working temperature is low, the heat exchange temperature difference is small, a small part of heat is taken away by the tail gas, and nearly 70% of heat needs to be dissipated through the radiator.
The traditional fuel oil automobile radiator generally adopts a pipe-belt type radiator, and has the effects of light weight and strong heat exchange effect. However, the thermal load and power level of the current full-power fuel cell automobile are huge, and the working temperature of the current full-power fuel cell automobile is lower than that of the traditional fuel cell automobile, and the traditional pipe-belt type radiator cannot meet the heat dissipation requirement of the current fuel cell automobile, so that various performances of a fuel cell stack can be influenced, and even the stack can be damaged. To solve this problem, some entire automobile manufacturers may adopt a multiple radiator combination, but this obviously increases the weight of the cooling system of the automobile.
Chinese patent CN110970639A discloses a vehicular fuel cell tube-strip radiator, including the multilayer flat pipe of vertical setting, transversely be provided with several bent pipe layer and sheetmetal layer in turn between every two-layer flat pipe, every bent pipe layer includes the crooked return bend of several with certain angle, every sheetmetal includes several array sheetmetals, and has seted up the fin on the sheetmetal. However, the tubular-band radiator of the vehicle fuel cell has a complex structure, and the machining process is complex, difficult and time-consuming.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a tubular belt type radiator for a fuel cell vehicle, which is characterized in that fins bent at a certain angle are arranged on a metal belt, so that air can deflect to the upper wall surface and the lower wall surface of a flat tube up and down when flowing through the fins, thereby strengthening the heat exchange of the upper wall surface and the lower wall surface of the flat tube, and aiming at solving the problems of complex structure and complex processing process of the tubular belt type radiator for the fuel cell vehicle.
In order to achieve the purpose, the invention provides a pipe belt type radiator for a fuel cell vehicle, which comprises a plurality of layers of flat pipes which are longitudinally arranged, wherein a water inlet and a water outlet are respectively arranged at the two transverse ends of each flat pipe, a metal belt with a wave-shaped longitudinal section is arranged between the two adjacent layers of flat pipes, the wave crest of each metal belt is connected with the surface of one flat pipe of the two adjacent layers of flat pipes, the wave trough of each metal belt is connected with the surface of the other flat pipe of the two adjacent layers of flat pipes, a plurality of fin groups are transversely arranged on each metal belt, each fin group comprises a plurality of fins, and the fins are bent at a certain angle;
when the heat exchanger works, air can longitudinally deflect to two opposite surfaces of the adjacent two layers of flat tubes when flowing through the fins, so that the heat exchange of the surfaces of the flat tubes is strengthened.
Preferably, the bending angle of the fin is 1 ° to 179 °.
Further preferably, the bending angle of the fin is 45 °.
Preferably, the window opening angle of the fin is 10-40 degrees.
Preferably, two adjacent fins constitute mirror symmetry.
Preferably, the plurality of fins in each fin group are arranged in parallel at equal intervals, and the interval is 0.2mm-5 mm.
Preferably, the plurality of fins in each fin group have the same windowing direction, or a part of fins in each fin group have opposite windowing directions to another part of fins.
Preferably, the distance between two adjacent peaks or two adjacent valleys of the metal strip is 1mm-15 mm.
Preferably, the metal strip has a width of 10mm to 130 mm.
Preferably, the distance between two adjacent layers of flat tubes is 5mm-20 mm.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
(1) the radiator is provided with the flat tubes, the wavy metal bands and the bent fins arranged on the metal bands, and is simple in structure and convenient to process; moreover, the fins are bent into a certain angle by optimizing the fin structure of the traditional tube-band type radiator, so that the air flow directed to the flat tubes is obviously increased, more low-temperature air is blown to the flat tubes, the air turbulence is obviously enhanced, and a thermal boundary layer is damaged, so that the heat exchange is enhanced; meanwhile, compared with the conventional vehicle radiator, the radiator provided by the invention has larger heat exchange area, improves the integral heat dissipation capacity of the radiator, and lays a foundation for meeting the heat dissipation requirement of a fuel cell vehicle.
(2) The bending of the fins is the reason for causing the air to deflect longitudinally, the bending angle of the fins is reasonably controlled within the range of 1-179 degrees, so that more air is deflected to the flat tubes due to fin disturbance, and meanwhile, the bending angle of the fins is set to be 45 degrees, the air deflection amount is the largest, and the heat exchange effect is the best.
(3) The invention reasonably optimizes the space between the flat tubes, the width of the metal belt and the space between two adjacent wave crests or two adjacent wave troughs, so that air can smoothly circulate in the radiator and fully exchanges heat.
Drawings
Fig. 1 is a schematic perspective view of a tubular-band radiator for a fuel cell vehicle according to an embodiment of the present invention;
fig. 2 is a front view of a tube-in-tube radiator for a fuel cell vehicle according to an embodiment of the present invention;
fig. 3 is a left side view of a tube-in-band radiator for a fuel cell vehicle according to an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a tubular-band radiator for a fuel cell vehicle according to a comparative example of the present invention;
FIG. 5 is a side view air flow and heat distribution diagram for a heat sink fin area according to an embodiment of the present invention;
FIG. 6 is a side view air flow and heat distribution profile for a fin region of a comparative example heat sink of the present invention;
FIG. 7 is a top view air flow and heat distribution profile of a fin region of a heat sink in accordance with an embodiment of the present invention;
FIG. 8 is a top view air flow and heat distribution profile of a finned area of a comparative example heat sink of the present invention;
the same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
1-flat tube, 2-metal band and 3-fin.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below 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.
Examples
The pipe belt type radiator for the fuel cell vehicle provided by the embodiment of the invention is shown in fig. 1 to 3, and comprises a plurality of layers of flat pipes 1 which are longitudinally arranged (along the direction of a z axis), wherein the flat pipes 1 are used for allowing cooling liquid to pass through, a water inlet and a water outlet are respectively arranged at two transverse ends (along the direction of an x axis), and the water inlet and the water outlet are consistent in size; a metal belt 2 with a wave-shaped longitudinal section is arranged between two adjacent layers of flat tubes 1, the wave crest of the metal belt 2 is connected with the surface of one flat tube 1 in the two adjacent layers of flat tubes 1, the wave trough of the metal belt 2 is connected with the surface of the other flat tube 1 in the two adjacent layers of flat tubes 1, and the metal belt 2 and the flat tubes 1 are welded for one-step forming; the metal belt 2 is provided with a plurality of fin groups along the x-axis direction, each fin group comprises a plurality of fins 3 distributed along the y-axis direction, the fins 3 are bent at a certain angle, and the fins 3 destroy a thermal boundary layer.
In the traditional tube-band type radiator, fins are directly pressed on a metal band and are of a vertical structure, the vertical fins can only strengthen the transverse disturbance of air, and a certain thermal boundary layer still exists. According to the invention, the bent fins 3 are arranged, and according to the circular tube turbulence principle, air can deflect to the lower surface of the upper layer of flat tube 1 and the upper surface of the lower layer of flat tube 1 up and down when passing through the fins 3, so that the air turbulence in the vertical direction (z-axis direction) can be enhanced, thereby generating the irregular transverse and longitudinal disturbances, and better destroying the thermal boundary so as to enhance the heat exchange. Meanwhile, the fins 3 are bent to form a certain angle, and compared with the traditional radiator, the heat exchange area is larger, and the heat exchange amount is larger under other same conditions.
As a preferred embodiment, see fig. 3, the fins 3 have a bending angle α of 1 ° to 179 °, further preferably 45 °. The windowing angle of the fin 3 is 10-40 degrees.
As a preferred embodiment, two adjacent fins form mirror symmetry; the fins 3 in each fin group are arranged in parallel at equal intervals, and the interval is 0.2mm-5 mm.
As a preferred embodiment, the plurality of fins 3 in each fin group have the same windowing direction, or a part of the fins 3 in each fin group is opposite to the windowing direction of another part of the fins 3. When the windowing directions of the fins 3 are different, the air flowing into the fins along the positive axis and the negative axis of the y axis can be disturbed, and the heat exchange effect is enhanced.
As a preferred embodiment, the distance between two adjacent peaks or two adjacent valleys of the metal strip 2 is 1mm to 15 mm; the width of the metal strip 2 is 10mm to 130 mm. The distance between two adjacent layers of flat tubes 1 is 5mm-20 mm. The distance between the flat pipes and the width of the metal belt, and the distance between two adjacent wave crests or two adjacent wave troughs of the metal belt directly influence the air circulation in the radiator, so that the air can rapidly pass through the radiator to be delayed in heat exchange if the distance is too large, and the air circulation can be prevented and the pressure drop can be increased if the distance is too small.
The structure of the fin 3 on the tube-band type radiator for the fuel cell vehicle has a certain rule, and the processing line of the traditional tube-band type radiator can be improved to meet the processing requirement of the invention, thereby reducing the processing cost and difficulty.
Above-mentioned radiator during operation, high temperature coolant liquid flows in flat pipe 1 from the water inlet one end of flat pipe 1, and the air constantly passes through perpendicularly along the y axle direction simultaneously the radiator, when flowing through fin 3 on strap 2, can take away the heat on the fin 3 that rises because of the coolant liquid heat dissipation, in addition because the crooked certain angle of fin 3, the air can deflect to two adjacent two-layer flat pipe 1 relative surfaces from top to bottom when flowing through fin 3, the air sweeps flat pipe 1 upper and lower surface, thereby take away the heat on flat pipe 1 surface because of the coolant liquid heating and realize the heat transfer to flat pipe 1 surface, after the heat dissipation, the coolant liquid that the temperature is lower flows from flat pipe 1 delivery port, then continues to get into next circulation. The cooling liquid may be Distilled Water (DW), Ethylene Glycol (EG), or a nano-stream, etc., without limitation.
Comparative example
The chinese patent CN110970639A discloses a vehicular fuel cell tube-strip radiator provided by this comparative example, as shown in fig. 4, this radiator includes the multilayer flat tubes that vertically set up, the horizontal both ends of flat tube are provided with coolant liquid entry and export respectively, and transversely are provided with several bent tube layer and sheetmetal in turn between every two layers of flat tubes, every bent tube layer includes several bent tubes that are crooked with certain angle, every sheetmetal includes several groups of sheetmetal, just the fin has been seted up on the sheetmetal.
The present invention performs simulation tests of air flow and heat distribution on two types of fuel cell vehicular tube-and-strip radiators provided in examples and comparative examples, referring to fig. 5 to 8. Fig. 5 and 6 show side views of air flow and heat distribution in the fin regions of the heat sink of the embodiment and the comparative example, respectively, wherein the arrow directions indicate the air flow direction, low-temperature air flows into the heat sink, and higher-temperature air flows out of the heat sink after heat exchange, as can be seen from comparison between fig. 5 and 6, the air flow in the heat sink of the embodiment of the invention is more turbulent, resulting in greater air turbulence, so that the thickness of the thermal boundary layer is smaller, and it can be seen that the low-temperature region of the fin in fig. 5 is larger, although the temperature of the end air is higher, but the end air is already discharged out of the heat sink, which means a greater heat exchange temperature difference, so that a greater heat exchange amount can be obtained.
Fig. 7 and 8 show the top view of the air flow and heat distribution in the fin area of the example and comparative example radiators, respectively, and thus it can be seen that the thermal boundary layer (i.e. the dark area around the fin in the figure) at the fin structure of the example is significantly thinner than that at the fin structure of the comparative example, which means that the fin structure designed by the example can break the thermal boundary layer well, thereby improving the heat dissipation effect.
Compared with the comparative example in which the bent tube layers and the metal sheet layers provided with the fins are alternately arranged, the radiator provided by the embodiment of the invention has the advantages that a plurality of curved surfaces in different directions exist in the radiator due to the continuous waves of the metal belt, and meanwhile, the plurality of fins distributed on the metal belt in an array manner are bent for a certain angle, so that the wavy metal belt and the bent fins are of an integrated structure, the air disturbance is stronger, and the heat exchange effect is improved.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a tubular belt radiator for fuel cell car which characterized in that: the heat exchanger comprises a plurality of layers of flat tubes (1) which are longitudinally arranged, wherein a water inlet and a water outlet are respectively arranged at the two transverse ends of each flat tube (1), a metal band (2) with a wave-shaped longitudinal section is arranged between every two adjacent layers of flat tubes (1), the wave crest of each metal band (2) is connected with the surface of one flat tube (1) of the two adjacent layers of flat tubes (1), the wave trough of each metal band (2) is connected with the surface of the other flat tube (1) of the two adjacent layers of flat tubes (1), each metal band (2) is transversely composed of a plurality of fin groups, each fin group comprises a plurality of fins (3), and each fin (3) is bent for a certain angle;
when the heat exchanger works, air can longitudinally deflect to two opposite surfaces of the adjacent two layers of flat pipes (1) when flowing through the fins (3), so that the heat exchange of the surfaces of the flat pipes (1) is strengthened.
2. The fuel cell vehicle tube-band radiator according to claim 1, characterized in that: the bending angle of the fins (3) is 1-179 degrees.
3. The fuel cell vehicle tube-band radiator according to claim 2, characterized in that: the bending angle of the fin (3) is 45 degrees.
4. The fuel cell vehicle tube-band radiator according to claim 1, characterized in that: the windowing angle of the fin (3) is 10-40 degrees.
5. The fuel cell vehicle tube-band radiator according to claim 1, characterized in that: two adjacent fins form mirror symmetry.
6. The fuel cell vehicle tube-band radiator according to claim 1, characterized in that: the fins (3) in each fin group are arranged in parallel at equal intervals, and the interval is 0.2mm-5 mm.
7. The fuel cell vehicle tube-band radiator according to claim 1, characterized in that: the windowing directions of the plurality of fins (3) in each fin group are the same, or the windowing directions of one part of fins (3) in each fin group are opposite to the windowing directions of the other part of fins (3).
8. The fuel cell vehicle tube-band radiator according to claim 1, characterized in that: the distance between two adjacent wave crests or two adjacent wave troughs of the metal belt (2) is 1mm-15 mm.
9. The fuel cell vehicle tube-band radiator according to claim 1, characterized in that: the width of the metal belt (2) is 10mm-130 mm.
10. The fuel cell vehicular tube-and-strip radiator according to any one of claims 1 to 9, characterized in that: the distance between two adjacent layers of flat tubes (1) is 5mm-20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110528545.XA CN113328118B (en) | 2021-05-14 | 2021-05-14 | Pipe belt type radiator for fuel cell vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110528545.XA CN113328118B (en) | 2021-05-14 | 2021-05-14 | Pipe belt type radiator for fuel cell vehicle |
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| Publication Number | Publication Date |
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| CN113328118A CN113328118A (en) | 2021-08-31 |
| CN113328118B true CN113328118B (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110528545.XA Active CN113328118B (en) | 2021-05-14 | 2021-05-14 | Pipe belt type radiator for fuel cell vehicle |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114313947A (en) * | 2021-11-26 | 2022-04-12 | 马鞍山纳百川热交换器有限公司 | Automatic pipe arranging and belt arranging equipment and process for heat exchanger |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114904A (en) * | 2013-02-28 | 2013-05-22 | 山东大学 | Louvered tube-tape radiator |
| JP2019015492A (en) * | 2017-07-07 | 2019-01-31 | 株式会社デンソー | Heat exchanger |
| CN209756716U (en) * | 2019-03-28 | 2019-12-10 | 空调国际(上海)有限公司 | Anti-frosting heat exchanger |
| CN212620242U (en) * | 2019-12-31 | 2021-02-26 | 江苏山源热工技术有限公司 | Radiating tube structure with wavy flying wings |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292521A (en) * | 2012-03-05 | 2013-09-11 | 萨帕铝热传输(上海)有限公司 | Heat exchanger and heat exchanger fin manufacturing equipment, and heat exchanger fin manufacturing method |
| CN206389664U (en) * | 2016-10-18 | 2017-08-08 | 中车大连机车研究所有限公司 | A kind of corrugated tube type microcirculation radiator and microcirculation heat-exchange system |
| US20200406325A1 (en) * | 2019-06-28 | 2020-12-31 | Robert Bogdan | Fin straightening tool and method for straightening bent radiator fins |
-
2021
- 2021-05-14 CN CN202110528545.XA patent/CN113328118B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114904A (en) * | 2013-02-28 | 2013-05-22 | 山东大学 | Louvered tube-tape radiator |
| JP2019015492A (en) * | 2017-07-07 | 2019-01-31 | 株式会社デンソー | Heat exchanger |
| CN209756716U (en) * | 2019-03-28 | 2019-12-10 | 空调国际(上海)有限公司 | Anti-frosting heat exchanger |
| CN212620242U (en) * | 2019-12-31 | 2021-02-26 | 江苏山源热工技术有限公司 | Radiating tube structure with wavy flying wings |
Non-Patent Citations (1)
| Title |
|---|
| A novel radiator structure for enhanced heat transfer used in PEM fuel cell vehicle;Chengyuan Gong等;《International Journal of Heat and Mass Transfer》;20200529;第157卷;第1-7页 * |
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