A vehicle carbon dioxide air cooler and a preparation method thereof

Abstract

The present invention relates to the technical field of air coolers, and specifically to a vehicle carbon dioxide air cooler and a preparation method thereof, comprising a plurality of flat tubes, and also comprising a collecting groove opened at one end of a collecting tube, and right-angle plates are installed on the symmetrical outer walls of the collecting tube on both sides; an air avoidance groove is equidistantly arranged at the edge of the groove of the collecting groove, and the air avoidance groove is in the shape of a triangular pyramid; a plurality of mounting holes are equidistantly arranged on the cover plate, and after the cover plate is installed on the collecting tube, the mounting holes correspond to the air avoidance grooves one by one. In this scheme, a plurality of air avoidance grooves are opened on the side of the collecting groove, and a conical space is left at the bottom of the air avoidance groove after welding is completed, which can expand the flow space of the gas in the later stage. During the welding process, a guide block is set at the bottom of the air avoidance groove, and an inclined surface for airflow guidance is set on the guide block, so that the airflow can be directed toward the outlet pipe when entering the collecting tube from the flat tube, thereby reducing the turbulence of the internal airflow and further improving the stability of the internal air pressure.

Description

Technical Field

[0001] The invention relates to the technical field of air coolers, and in particular to a vehicle carbon dioxide air cooler and a preparation method thereof. Background Art

[0002] Currently, carbon dioxide is regarded as the refrigerant with the greatest application potential in the field of automotive heat pumps.

[0003] In the prior art, the space inside the vehicle is limited, resulting in a smaller installation space for the air cooler, which makes the diameter of the manifold smaller, resulting in a faster internal gas flow rate and a higher internal air pressure in the manifold, which reduces the overall stability of the air cooler. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a vehicle carbon dioxide air cooler and a preparation method thereof, which can effectively solve the problem of low stability caused by the small inner diameter of the manifold of the prior art vehicle air cooler.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a vehicle carbon dioxide air cooler and a preparation method thereof, comprising a plurality of flat tubes and a collecting pipe installed at both ends of the flat tubes, one end of the collecting pipe being provided with a collecting groove, right-angle plates being installed on both symmetrical outer walls of the collecting pipe, and the two right-angle plates being located on both sides of the collecting groove, a plurality of buckles being evenly installed on the top walls of the two right-angle plates; an air avoidance groove being equidistantly located at the notch edge of the collecting groove, and the air avoidance groove being in a triangular pyramid shape, and the notch of the air avoidance groove being slightly larger than the flat tube; a cover plate being arranged between the two right-angle plates, and the width of the cover plate being equal to the shortest distance between the two right-angle plates, a plurality of mounting holes being evenly arranged on the cover plate, and after the cover plate is installed on the collecting pipe, the mounting holes correspond one to one to the air avoidance grooves.

[0007] Furthermore, two reinforcement holes are provided on the outer wall of the collecting tube away from the collecting trough, and the two reinforcement holes are respectively close to the two ends of the collecting tube, and the reinforcement holes penetrate the side wall of the collecting tube and extend in the collecting trough, and a slot is provided at one end of the reinforcement hole close to the collecting trough, and the slot is slightly larger than the reinforcement hole, and a partition is movably inserted into the reinforcement hole close to one end of the collecting trough, and a block matching the slot is provided at one end of the partition.

[0008] Furthermore, the manifold and the right-angle plate are 3003 extruded profiles, and the cover plate is a 4045 / 3003 / 4045 double composite sheet with a thickness of 2.5 mm.

[0009] A method for preparing an air cooler comprises the following steps:

[0010] S1: Take the aluminum bar and extrude it into the collector blank through the extrusion equipment;

[0011] S2: Punching out multiple equidistant buckles using a punch press;

[0012] S3: Cut the collecting trough using a cutting device to cut out a plurality of air-avoiding troughs;

[0013] S4: punching the right angle plate by the side of a punch press;

[0014] S5: Take a flat tube with the same number as the number of the air-avoiding grooves in a single header, and pass the two ends of the flat tube through the two cover plates, so that the flat tube corresponds to the mounting holes on the cover plates one by one;

[0015] S6: Put the auxiliary plate into the collecting tank, first make the two cover plates in S5 close to each other, and then insert the ends of the flat tubes into the collecting tubes at the same time. At this time, the flat tubes correspond to the air avoidance tanks one by one, and the ends of the flat tubes are against the top of the auxiliary plate. Solder is added to the side of the air avoidance tank away from the collecting tank, and the solder is heated from the top of the air avoidance tank. After the solder is melted, the auxiliary plate is pulled out from the end of the collecting tank;

[0016] S7: After welding is completed, a partition is inserted into the reinforcement hole to push the two cover plates away from each other, and the two cover plates are pressed on two headers respectively, pressing the buckle teeth to bend them and press them on the outer wall of the cover plate;

[0017] S8: Two external plates are connected between the two cover plates by welding, one of the cover plates is externally connected to an air inlet pipe, and the other cover plate is externally connected to an air outlet pipe.

[0018] Furthermore, the auxiliary plate is provided with a slide groove, and two sliders are slidably installed in the slide groove, a return spring is connected between the outer wall on the side where the two sliders are close to each other, support bars are provided on the two sliders, and a plurality of blocking blocks are installed at equal distances on the outer wall on the side where the two support bars are away from each other, the blocking blocks are adapted to the air avoidance grooves, and a guide block is provided on the top wall of the blocking block, and an inclined surface is provided on the outer wall on the side where the two guide blocks are close to each other, and the shortest distance between the two guide block brackets gradually increases according to the airflow direction, and when the temperature rises, the guide block and the blocking block are separated.

[0019] Furthermore, a colloid is provided between the guide block and the blocking block.

[0020] Furthermore, the top wall of the support bar is provided with a plurality of positioning grooves, and the width of the positioning grooves is the same as the thickness of the flat tube.

[0021] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0022] 1. In this scheme, multiple air avoidance grooves are opened on the side of the collecting trough. The flat tubes are placed in the air avoidance grooves for welding. After welding, a conical space is left at the bottom of the air avoidance groove. The superposition of multiple conical grooves can expand the flow space of the gas in the later stage, thereby relieving the internal air pressure.

[0023] 2. In the welding process, this scheme sets a guide block at the bottom of the air avoidance groove. The guide block is provided with an inclined surface for air flow guidance, so that the air flow can be directed toward the outlet pipe when entering the collecting pipe from the flat tube, thereby reducing the turbulence of the internal air flow and further improving the stability of the internal air pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is an overall schematic diagram of the present invention;

[0026] Figure 2 It is an exploded schematic diagram of the header part in the present invention;

[0027] Figure 3 for Figure 3 A magnified view of the structure of part A;

[0028] Figure 4 This is a welding state diagram of the collector in the present invention;

[0029] Figure 5 for Figure 4 A magnified view of the structure of part B;

[0030] Figure 6 This is a schematic diagram of the installation of the cover plate in the present invention;

[0031] Figure 7 is a cross-sectional view of the auxiliary plate portion of the present invention;

[0032] Figure 8 It is a schematic structural diagram of the blocking block part of the present invention;

[0033] Fig. 9 A top view of the guide block of the present invention;

[0034] Fig.10 This is a cross-sectional view of the flat tube of the present invention after welding is completed.

[0035] The numbers in the figure represent: 1. Flat tube; 2. Collecting pipe; 3. Cover plate; 4. Right-angle plate; 5. Buckle; 6. Mounting hole; 7. Air avoidance groove; 8. Partition; 9. Reinforcement hole; 10. Auxiliary plate; 11. Slide groove; 12. Slider; 13. Return spring; 14. Support bar; 15. Block block; 16. Guide block; 17. Colloid; 18. Inclined surface; 19. Inlet pipe; 20. Outlet pipe. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The present invention will be further described below in conjunction with the embodiments.

[0038] Example: Reference Figure 1-Figure 10 A vehicle carbon dioxide air cooler comprises a plurality of flat tubes 1 and a collecting pipe 2, which is installed at both ends of the flat tubes 1. A collecting groove is provided at one end of the collecting pipe 2. Right-angle plates 4 are provided on the symmetrical outer walls of the collecting pipe 2 on both sides, and the two right-angle plates 4 are located on both sides of the collecting groove. A plurality of buckles 5 are provided on the top walls of the two right-angle plates 4 at equal distances; an air avoidance groove 7 is provided at equal distances at the notch edge of the collecting groove, and the air avoidance groove 7 is in the shape of a triangular pyramid, and the notch of the air avoidance groove 7 is slightly larger than the flat tube 1; a cover plate 3 is provided between the two right-angle plates 4, and the width of the cover plate 3 is equal to the shortest distance between the two right-angle plates 4. A plurality of mounting holes 6 are provided on the cover plate 3 at equal distances. After the cover plate 3 is installed on the collecting pipe 2, the mounting holes 6 correspond to the air avoidance grooves 7 one by one. Two reinforcement holes 9 are provided on the outer wall of the side away from the collecting tank, and the two reinforcement holes 9 are respectively close to the two ends of the collecting pipe 2. The reinforcement hole 9 passes through the side wall of the collecting pipe 2 and extends in the collecting tank. A card slot is provided at one end of the reinforcement hole 9 close to the collecting tank, and the card slot size is slightly larger than the reinforcement hole 9. A partition 8 is movably inserted at one end of the reinforcement hole 9 close to the collecting tank, and a card block matching the card slot is provided at one end of the partition 8. It is worth noting that the card blocks on the two partitions 8 are squeezed on one side of the outer wall of the cover plate 3, and the buckle 5 is pressed on the other side of the cover plate 3, so as to complete the fixing of the cover plate 3 and the sealing of the collecting tank. The collecting pipe 2 and the right-angle plate 4 are 3003 extruded profiles, and the cover plate 3 is 4045 / 3003 / 4045 double composite sheet with a thickness of 2.5mm.

[0039] In order to allow the carbon dioxide to have a larger circulation space, the present solution opens a plurality of air avoidance grooves 7 on both sides of the collecting groove, such as Figure 3As shown, the air avoidance groove 7 is in the shape of a triangular pyramid, and the notch of the air avoidance groove 7 is slightly larger than the flat tube 1, so that the flat tube 1 will be placed in the middle position of the air avoidance groove 7 after being inserted into the air avoidance groove 7. After the subsequent welding is completed, a part of the space at the bottom of the air avoidance groove 7 will be connected with the collecting groove, and the flat tube 1 and the top part of the air avoidance groove 7 are welded together.

[0040] By superimposing the spaces below the plurality of air avoidance grooves 7 , the overall space in which the gas can flow through the subsequent manifold 2 when in use can be expanded, thereby reducing the gas pressure inside the manifold 2 when the air cooler is running and improving the overall stability of the air cooler.

[0041] refer to Figure 1-Figure 10 , a method for preparing an air cooler, comprising the following steps:

[0042] S1: Take the aluminum bar and extrude it into the collector blank through the extrusion equipment;

[0043] S2: punching out a plurality of equidistant buckle teeth 5 using a punch press;

[0044] S3: Using a cutting device to cut the collector tank, cutting out a plurality of air-avoiding grooves 7;

[0045] S4: Use the punch press to punch the side to form a right angle plate 4;

[0046] S5: Take the same number of flat tubes 1 as the number of air-avoiding grooves 7 in a single header 2, and pass the two ends of the upper flat tube 1 through the two cover plates 3, so that the flat tubes 1 correspond to the mounting holes 6 on the cover plates 3 one by one;

[0047] S6: Put the auxiliary plate 10 into the collecting tank, first make the two cover plates 3 in S5 close to each other, and then insert the ends of the flat tubes 1 into the collecting tubes 2 at the same time. At this time, the flat tubes 1 correspond to the air avoidance grooves 7 one by one, and the ends of the flat tubes 1 are against the top of the auxiliary plate 10. Add solder to the side of the air avoidance groove 7 away from the collecting tank, heat the solder from the top of the air avoidance groove 7, and after the solder is melted, pull out the auxiliary plate 10 from the end of the collecting tank;

[0048] S7: After welding is completed, insert the partition 8 into the reinforcement hole 9, push the two cover plates 3 away from each other, and the two cover plates 3 are pressed on the two headers 2 respectively, pressing the buckle teeth 5 to bend them and press them on the outer wall of the cover plate 3;

[0049] S8: Two external plates are connected between the two cover plates 3 by welding, wherein one of the cover plates 3 is externally connected to the air inlet pipe 19 , and the other cover plate 3 is externally connected to the air outlet pipe 20 .

[0050] refer to Figure 1-Figure 10A slide groove 11 is provided on the auxiliary plate 10, and two sliders 12 are slidably installed in the slide groove 11. A return spring 13 is connected between the outer wall on the side where the two sliders 12 are close to each other. Support bars 14 are provided on the two sliders 12. A plurality of positioning grooves are provided on the top wall of the support bar 14. The width of the positioning groove is the same as the thickness of the flat tube 1. A plurality of blocking blocks 15 are installed at equal distances on the outer wall on the side away from the two support bars 14. The blocking blocks 15 are adapted to the air avoidance groove 7. A guide block 16 is provided on the top wall of the blocking block 15. An inclined surface 18 is provided on the outer wall on the side where the two guide blocks 16 are close to each other. The shortest distance between the two guide block 16 brackets gradually increases according to the airflow direction. When the temperature rises, the guide block 16 and the blocking block 15 are separated, and a colloid 17 is provided between the guide block 16 and the blocking block 15.

[0051] In order to facilitate the welding of the flat tube 1 into the air avoidance groove 7, an auxiliary plate 10 is placed in the collecting groove in this solution, such as Figure 4 , Figure 5 and Figure 7 As described above, the bottom of the auxiliary plate 10 is adapted to the shape of the collecting groove, so that when the flat tube 1 is placed in the air-avoiding groove 7, its end can be pressed on the support bar 14, and a positioning groove is provided on the support bar 14, which can position the flat tube 1 placed above it. In addition, a blocking block 15 adapted to the air-avoiding groove 7 is provided on the side of the auxiliary plate 10, and the blocking block 15 is stuck into the bottom of the air-avoiding groove 7 after the auxiliary plate 10 is placed in the collecting groove. This is to concentrate the solder on the top of the air-avoiding groove 7 to prevent the solder from entering the collecting groove through the gap when adding solder (the larger the welding area, the greater the connection strength between the flat tube 1 and the collecting tube 2, and the greater the anti-explosion pressure). While ensuring the anti-explosion pressure, the ventilation space of the collecting groove needs to be ensured. It is worth noting that the position where the solder is placed is the side of the air-avoiding groove 7 away from the collecting groove. The solder is heated by an external device, and the solder melts, so that the flat tube 1 is connected to the air avoidance groove 7, and a part of the high temperature is transferred to the top of the blocking block 15. In this scheme, a guide block 16 is set above the blocking block 15. When subjected to high temperature, the colloid 17 between the guide block 16 and the blocking block 15 melts and the two are separated. On the one hand, this is to facilitate the subsequent pulling of the two support bars 14 closer to each other so that the blocking block 15 can leave the bottom of the air avoidance groove 7. On the other hand, the bottom of the guide block 16 is smoother than the surface of the solder after cooling, which has the effect of reducing the turbulence of the air flow inside the collecting groove in the later stage. After the blocking block 15 leaves the air avoidance groove 7, the auxiliary plate 10 is pulled out from one end of the collecting tube 2.

[0052] It is worth noting that in this solution, a slope 18 is provided on the side wall of the guide block 16, such as Figure 8-Figure 10When the airflow passes through the flat tube 1 and enters the collecting trough, it encounters the inclined surface 18 of the guide block 16 and is not only concentrated toward the middle position of the collecting trough, but the inclined surface 18 is inclined toward the airflow outlet. Such guiding effect can prevent the airflow from vertically impacting the inner wall of the collecting trough, but rather biased toward the airflow outlet at a certain angle. This can reduce the degree of airflow turbulence in the collecting pipe 2, thereby improving the stability of the collecting pipe 2 during use, and improving the overall stability and use quality of the air cooler.

[0053] The auxiliary plate 10 can be directly inserted from directly above the collecting trough. If it is placed from top to bottom, the blocking block 15 needs to be aligned with each air avoidance groove 7. It can also be inserted from the end of the collecting tube 2. If the insertion method is adopted, the two support bars 14 need to be pulled together first to prevent the blocking blocks 15 and the guide blocks 16 on both sides from rubbing against the inner wall of the collecting trough. Here, the length of the auxiliary plate 10 can be made the same as that of the collecting tube 2. After the auxiliary plate 10 is aligned with both ends of the collecting tube 2, the two support bars 14 are released. Under the action of the reset spring 13, multiple support bars 14 are inserted into the corresponding air avoidance grooves 7 one by one.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preparing an air cooler, characterized in that: The following steps are involved: S1: Take the aluminum bar and extrude it into the collector blank through the extrusion equipment; S2: punching out a plurality of equidistant buckle teeth (5) using a punch press; S3: using a cutting device to cut the collecting trough, cutting out a plurality of air-avoiding grooves (7); S4: Punching with the side of a punch press to form a right angle plate (4); S5: Take the same number of flat tubes (1) as the number of air avoidance grooves (7) in a single header (2), and insert both ends of the flat tubes (1) into two cover plates (3), so that the flat tubes (1) correspond to the mounting holes (6) on the cover plates (3) one by one; S6: inserting the auxiliary plate (10) into the collecting trough, first bringing the two cover plates (3) in S5 close to each other, and then inserting the ends of the flat tubes (1) into the collecting tubes (2) at the same time, so that the flat tubes (1) correspond to the air avoidance grooves (7) one by one, and the ends of the flat tubes (1) are against the top of the auxiliary plate (10), adding solder to the side of the air avoidance groove (7) away from the collecting trough, heating the solder from the top of the air avoidance groove (7), and after the solder is melted, pulling out the auxiliary plate (10) from the end of the collecting trough; S7: After welding is completed, a partition plate (8) is inserted into the reinforcement hole (9), and the two cover plates (3) are pushed away from each other. The two cover plates (3) are respectively pressed on the two collecting pipes (2), and the buckle teeth (5) are pressed to bend and press on the outer wall of the cover plate (3); S8: connecting two external plates between the two cover plates (3) by welding, wherein one of the cover plates (3) is externally connected to an air inlet pipe (19), and the other cover plate (3) is externally connected to an air outlet pipe (20); The auxiliary plate (10) is provided with a slide groove (11), in which two sliders (12) are slidably installed, a return spring (13) is connected between the outer wall on the side where the two sliders (12) are close to each other, and the two sliders (12) are provided with a support bar (14), and a plurality of blocking blocks (15) are installed at equal distances on the outer wall on the side where the two support bars (14) are far away from each other, and the blocking blocks (15) are adapted to the air avoidance groove (7), and a guide block (16) is provided on the top wall of the blocking block (15), and an inclined surface (18) is provided on the outer wall on the side where the two guide blocks (16) are close to each other, and the shortest distance between the brackets of the two guide blocks (16) gradually increases according to the airflow direction, and when the temperature rises, the guide block (16) and the blocking block (15) are separated.

2. According to the method for preparing an air cooler according to claim 1, a colloid (17) is provided between the guide block (16) and the blocking block (15).

3. The method for preparing an air cooler according to claim 2, characterized in that: The top wall of the support bar (14) is provided with a plurality of positioning grooves, and the width of the positioning grooves is the same as the thickness of the flat tube (1).

4. A vehicle carbon dioxide air cooler, comprising a plurality of flat tubes (1), characterized in that: Also includes: A collecting pipe (2) is installed at both ends of the flat tube (1), one end of the collecting pipe (2) is provided with a collecting groove, right-angle plates (4) are installed on two symmetrical outer walls of the collecting pipe (2), and the two right-angle plates (4) are located on both sides of the collecting groove, and a plurality of buckles (5) are installed on the top walls of the two right-angle plates (4) at equal distances; The air avoidance grooves (7) are equidistantly located at the edges of the slot openings of the current collecting grooves, and the air avoidance grooves (7) are in the shape of triangular pyramids, and the slot openings of the air avoidance grooves (7) are slightly larger than the flat tubes (1); The cover plate (3) is arranged between the two right-angle plates (4), and the width of the cover plate (3) is equal to the shortest distance between the two right-angle plates (4). The cover plate (3) is provided with a plurality of mounting holes (6) at equal distances. After the cover plate (3) is mounted on the manifold (2), the mounting holes (6) correspond one-to-one to the air avoidance grooves (7).

5. A vehicle carbon dioxide air cooler according to claim 4, characterized in that: Two reinforcement holes (9) are provided on the outer wall of the collecting pipe (2) on the side away from the collecting tank, and the two reinforcement holes (9) are respectively close to the two ends of the collecting pipe (2), the reinforcement hole (9) passes through the side wall of the collecting pipe (2) and extends into the collecting tank, the reinforcement hole (9) is provided with a slot near one end of the collecting tank, and the size of the slot is slightly larger than the reinforcement hole (9), the reinforcement hole (9) is provided with a partition (8) movably inserted near one end of the collecting tank, and a block matching the slot is provided at one end of the partition (8).

6. A vehicle carbon dioxide air cooler according to claim 4, characterized in that: The manifold (2) and the right-angle plate (4) are 3003 extruded profiles, and the cover plate (3) is a 4045 / 3003 / 4045 double composite sheet with a thickness of 2.5 mm.

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