Single-tube fin assembly and heat exchanger

Abstract

The utility model provides a single-tube fin assembly and heat exchanger, wherein the single-tube fin assembly comprises a flat tube and a plurality of radiating fins arranged at intervals along the length direction of the flat tube, a U-shaped groove is formed at the edge of one side of each radiating fin, each radiating fin is sleeved on the flat tube through the U-shaped groove of the radiating fin, and the flat tube is provided with a plurality of radiating fins. And the radiating fins are welded with the flat pipes. According to the utility model, the U-shaped grooves of the radiating fins and the flat tubes are welded after position limitation, so that the reliable stability of the relative positions of the radiating fins and the flat tubes in the welding process can be ensured, meanwhile, each single-tube fin assembly can be independently fed into a tunnel welding furnace for welding, the fixed connection difficulty between the fins and the flat tubes is lower, and the welding efficiency is improved. And the production requirements of heat exchangers with large sizes can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger design technical field, concretely relates to a single tube fin assembly and heat exchanger. BACKGROUND

[0002] Traditional copper tube fin heat exchanger, stainless steel fin round hole and heat exchange round pipe assembly, through the expansion pipe in the copper pipe and fin hole fixed connection, however, for the refrigeration medium flow very big refrigeration system, in order to reduce flow resistance, need heat exchange pipe diameter reaches 100mm above, lead to heat exchanger wind resistance is bigger and adopts the expansion pipe mode fixed connection and realizes the difficulty is bigger. SUMMARY

[0003] The single tube fin assembly and heat exchanger can at least partially solve the above problems.

[0004] The utility model discloses a single tube fin assembly, including flat tube and the multiple heat dissipation fins that set up interval along the length direction of flat tube, the side edge of each heat dissipation fin forms U -shaped groove, each heat dissipation fin is connected on flat tube through the U -shaped groove that it has, and each heat dissipation fin and flat tube are welded.

[0005] In some embodiments, the U-shaped groove of each flat tube has a positioning piece folded towards one side at the slot, and when each heat dissipation fin is assembled on the flat tube, the spacing of the two adjacent heat dissipation fins is positioned by the positioning piece of one of them.

[0006] The utility model also provides a heat exchanger, including heat exchange assembly, the heat exchange assembly includes a plurality of parallel interval set preceding single tube fin assembly, the heat exchange assembly still includes the first side header and the second side header that set up interval relatively, and the two ends of the flat tube of a plurality of single tube fin assemblies are respectively communicated between the first side header and the second side header.

[0007] In some embodiments, the plane in which the width of each flat tube is located is parallel to the air inlet direction of the heat exchanger.

[0008] In some embodiments, in the air inlet direction, the single tube fin assembly has at least two rows in front and back, and the two rows of single tube fin assemblies form a staggered arrangement.

[0009] In some embodiments, each single tube fin assembly has a first spacing d1 in the height direction, 0mm < d1 ≤ 1.5mm, and / or, the two rows of single tube fin assemblies in front and back have a second spacing d2 in the horizontal direction, 0mm < d2 ≤ 1.5mm.

[0010] In some embodiments, the first side header tank has an inlet pipe, the second side header tank has an outlet pipe, the inlet pipe is located at the bottom region of the first side header tank, and the outlet pipe is located at the top region of the second side header tank.

[0011] In some embodiments, the first side header tank has a first side partition, the second side header tank has a second side partition, the first side partition and the second side partition have different heights; and / or, the first side header tank and the second side header tank are respectively provided with exhaust valves.

[0012] In some embodiments, the heat exchanger comprises two heat exchange assemblies, the two heat exchange assemblies are arranged in front and back, the front first side header tank and the rear second side header tank are arranged in position correspondence, the front second side header tank and the rear first side header tank are arranged in position correspondence, and the outlet pipe of the front second side header tank and the inlet pipe of the rear first side header tank are communicated through an adapter pipe.

[0013] In some embodiments, the heat exchanger further comprises a top plate and a bottom plate, the top surfaces of the two heat exchange assemblies are connected by the top plate, the bottom surfaces of the two heat exchange assemblies are connected by the bottom plate, and the left and right sides of the top plate and the bottom plate are respectively connected with the first side header tank and the second side header tank.

[0014] The single-tube fin assembly and the heat exchanger of the utility model, by the U-shaped groove of each heat dissipation fin and the flat tube forming position are limited and then the both are welded, can ensure the reliable stability of relative position in the welding process, simultaneously, each single-tube fin assembly can be sent into the tunnel welding furnace for welding separately, the fixed connection between the fin and the flat tube is lower in difficulty, and the production demand of the heat exchanger with larger size can be met, for example, the heat dissipation fin with larger welding amount and the flat tube are welded by furnace welding, and the single-tube fin assembly formed after welding is completed can be welded and fixed with other structures by traditional argon arc welding and other welding modes; simultaneously, since the flat tube is adopted, it has smaller thickness, so when applied in the heat exchanger, the air resistance of the heat exchanger is smaller, and the heat exchange efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the three-dimensional structure schematic view of the single-tube fin assembly of the utility model;

[0016] Figure 2 is Figure 1 the structure schematic view of the heat dissipation fin in

[0017] Figure 3 is Figure 2 the bottom view of the heat dissipation fin in

[0018] Figure 4is a three-dimensional structure schematic view of the heat exchanger of the utility model;

[0019] Figure 5 is Figure 4 a top view of the heat exchanger in the figure;

[0020] Figure 6 is Figure 4 a right view of the heat exchanger in the figure;

[0021] Figure 7 is Figure 4 a structure schematic view of the heat exchanger in the figure after removing part components;

[0022] Figure 8 is Figure 4 another structure schematic view of the heat exchanger in the figure after removing part components.

[0023] In the figure,

[0024] 1, single tube fin assembly;11, flat tube;12, heat dissipation fin;121, U-shaped groove;122, positioning sheet;2, heat exchange assembly;21, first side header;211, liquid inlet pipe;22, second side header;221, liquid outlet pipe;23, adapter pipe;24, exhaust valve;25, top plate;26, bottom plate. DETAILED DESCRIPTION

[0025] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example implementations to those skilled in the art. In the drawings, the thickness of regions and layers can be exaggerated for clarity. Like reference numerals may

[0026] The described features, structures, or characteristics can be combined in any suitable manner in one or more implementations. In the following description, numerous specific details are provided to give a thorough understanding of implementations of the present application. One skilled in the relevant art will recognize, however, that the

[0027] The example described below is a single tube fin assembly and heat exchanger of the utility model, the example is only a part of the embodiment of the utility model, but the protection scope of the utility model is not limited to this. All other embodiments obtained by the ordinary skilled in the art without making creative efforts should be covered in the protection scope of the utility model.

[0028] Please refer to Figures 1 to 8 According to the embodiment of the present application, please refer to FIG. 1 to Figure 3 As shown in the drawings, a single-tube fin assembly is provided, which comprises a flat tube 11 and a plurality of heat dissipation fins 12 arranged at intervals along the length direction of the flat tube 11. Each of the heat dissipation fins 12 is formed with a U-shaped groove 121 at one side edge thereof. Each of the heat dissipation fins 12 is sleeved on the flat tube 11 via the U-shaped groove 121, and the heat dissipation fin 12 and the flat tube 11 are welded together. The welding is preferably carried out by furnace welding.

[0029] In the technical solution, the U-shaped groove 121 of each heat dissipation fin 12 and the flat tube 11 are positioned and then welded together, which can ensure the reliable stability of the relative position of the two during welding. Meanwhile, each single-tube fin assembly can be sent into a tunnel welding furnace for welding separately. The fixed connection between the fin and the flat tube is less difficult, and can meet the production requirements of a heat exchanger with a larger size. For example, the heat dissipation fin 12 and the flat tube 11 with a large welding amount are welded by furnace welding, and the single-tube fin assembly formed after welding is welded and fixed with other structures by traditional argon arc welding. Meanwhile, since the flat tube 11 has a small thickness, the air resistance of the heat exchanger is small when it is applied in the heat exchanger, and the heat exchange efficiency is improved.

[0030] In some embodiments, each of the flat tubes 11 has a positioning piece 122 folded towards one side at the opening of the U-shaped groove 121. When each of the heat dissipation fins 12 is assembled on the flat tube 11, the spacing between two adjacent heat dissipation fins 12 is positioned by the positioning piece 122 of one of the two. The positioning piece 122 is preferably formed by punching, and the width of the heat exchange channel formed between two adjacent heat dissipation fins 12 is limited by the extension length of each positioning piece 122.

[0031] According to the embodiment of the utility model, further provide a heat exchanger, including heat exchange subassembly 2, heat exchange subassembly 2 includes a plurality of parallel interval set preceding single tube fin subassembly 1, heat exchange subassembly 2 still includes the first side header 21 and second side header 22 of interval set, a plurality of single tube fin subassembly 1 respectively with the both ends of flat tube 11 are communicated between the first side header 21 and second side header 22, it can be understood that, preceding first side header 21 and second side header 22 both corresponding set up a plurality of connecting holes (not marked in the figure) on the opposite tank wall body, and the end of each flat tube 11 is inserted into each connecting hole and welded between both, so that the header can be used to realize the collection or distribution of cooling medium (for example cooling water), which can simplify the design and arrangement of the heat exchanger outside connecting pipeline.

[0032] In a specific embodiment, the width of each flat tube 11 is parallel to the air inlet direction of the heat exchanger, which can ensure smooth flow of the heat exchange airflow.

[0033] In some embodiments, in the air inlet direction, the single tube fin subassembly 1 has at least two front and rear rows, and the front and rear rows of single tube fin subassembly 1 form a staggered arrangement, as shown in Figure 8 This can realize disturbance of the airflow entering the heat exchange channel, thereby improving the heat exchange effect of the heat exchange airflow and the outer surface of the flat tube 11 and the heat exchange fin 12.

[0034] In some embodiments, each single tube fin subassembly 1 has a first spacing d1 in the height direction, 0mm < d1 ≤ 1.5mm; and / or, the front and rear rows of single tube fin subassembly 1 have a second spacing d2 in the horizontal direction, 0mm < d2 ≤ 1.5mm, which can ensure that the heat dissipation fins 12 in each single tube fin subassembly 1 do not contact each other to form extrusion, thereby ensuring the convenient assembly of each single tube fin subassembly 1, and the time interval is not too large, which is beneficial to ensure the heat exchange effect.

[0035] In some embodiments, the first side header 21 has an inlet pipe 211, and the second side header 22 has an outlet pipe 221, the inlet pipe 211 is located at the bottom region of the first side header 21, and the outlet pipe 221 is located at the top region of the second side header 22, which can ensure that the cooling water flowing into the first side header 21 has equal tube length in each flat tube 11, thereby ensuring the uniformity of heat exchange on the entire heat exchange core area of the heat exchanger.

[0036] In some embodiments, the first side header tank 21 has a first side partition (not shown in the figure) and the second side header tank 22 has a second side partition (not shown in the figure), the first side partition and the second side partition are arranged at different heights, that is, the two side partitions are staggered in height, so that the flow of cooling water in the flat tube 11 forms an S-shaped flow in height, which can increase the flow path of the cooling water and ensure the heat exchange effect.

[0037] In a preferred embodiment, the first side header tank 21 and the second side header tank 22 are respectively provided with an exhaust valve 24, which is preferably arranged at the top of the corresponding header tank, so that the gas in the top area can be discharged, thereby improving the heat exchange effect of the heat exchanger.

[0038] Specifically referring to Figure 4 As shown, the heat exchanger includes two heat exchange assemblies 2, the two heat exchange assemblies 2 are arranged in front and back, and the front first side header tank 21 and the rear second side header tank 22 are arranged in position correspondence, the front second side header tank 22 and the rear first side header tank 21 are arranged in position correspondence, and the outlet pipe 221 of the front second side header tank 22 and the inlet pipe 211 of the rear first side header tank 21 are communicated through the adapter pipe 23, so that the incoming air flow can be heat exchanged multiple times in front and back, further improving the heat exchange effect.

[0039] In some embodiments, the heat exchanger further includes a top plate 25 and a bottom plate 26, the top surfaces of the two heat exchange assemblies 2 are connected by the top plate 25, the bottom surfaces of the two heat exchange assemblies 2 are connected by the bottom plate 26, and the left and right sides of the top plate 25 and the bottom plate 26 are respectively connected with the first side header tank 21 and the second side header tank 22. Specifically, the top plate 25, the bottom plate 26 and the walls of the two side header tanks can be bolted, and after the bolted assembly is completed, the top plate 25, the bottom plate 26 and the walls of the two side header tanks form a protective structure for the outer frame of the single-tube fin assembly 1 in the middle, preventing the heat dissipation fins 12 from being bent, deformed or even damaged under external force.

[0040] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A single tube fin assembly characterized by, The flat tube (11) and a plurality of heat dissipation fins (12) are arranged along the length direction of the flat tube (11), a U-shaped groove (121) is formed at one side edge of each heat dissipation fin (12), each heat dissipation fin (12) is sleeved on the flat tube (11) through the U-shaped groove (121) thereof, and each heat dissipation fin (12) is welded with the flat tube (11).

2. The single tube fin assembly of claim 1, wherein, The U-shaped groove (121) of each flat tube (11) has a positioning piece (122) folded towards one side at the opening thereof, and when each heat dissipation fin (12) is assembled on the flat tube (11), the spacing of two adjacent heat dissipation fins (12) is positioned by the positioning piece (122) of one of them.

3. A heat exchanger, characterized by The heat exchange assembly (2) comprises a plurality of parallel and spaced single-tube fin assembly (1) according to claim 1 or 2, and the heat exchange assembly (2) further comprises a first side header tank (21) and a second side header tank (22) arranged oppositely and spacedly, and the two ends of the flat tube (11) of each single-tube fin assembly (1) are respectively communicated between the first side header tank (21) and the second side header tank (22).

4. The heat exchanger of claim 3, wherein The plane where the width of each flat tube (11) is arranged parallel to the air inlet direction of the heat exchanger.

5. The heat exchanger of claim 4, wherein In the air inlet direction, the single-tube fin assembly (1) has at least two front and rear rows, and the front and rear rows of the single-tube fin assembly (1) are staggered.

6. The heat exchanger of claim 5, wherein Each single-tube fin assembly (1) has a first spacing d1 in the height direction, 0mm < d1 ≤ 1.5mm; and / or, the front and rear rows of the single-tube fin assembly (1) have a second spacing d2 in the horizontal direction, 0mm < d2 ≤ 1.5mm.

7. The heat exchanger of claim 3, wherein The first side header tank (21) has a liquid inlet pipe (211), and the second side header tank (22) has a liquid outlet pipe (221), the liquid inlet pipe (211) is located at the bottom area of the first side header tank (21), and the liquid outlet pipe (221) is located at the top area of the second side header tank (22).

8. The heat exchanger of claim 7, wherein The first side header tank (21) has a first side partition, the second side header tank (22) has a second side partition, the setting height of the first side partition and the second side partition is different; and / or, the first side header tank (21) and the second side header tank (22) are respectively provided with an exhaust valve (24).

9. The heat exchanger of claim 3, wherein Two heat exchange assemblies (2) are arranged front and rear, and the first side header tank (21) in front is arranged in position corresponding to the second side header tank (22) behind, and the second side header tank (22) in front is arranged in position corresponding to the first side header tank (21) behind, and the liquid outlet pipe (221) of the second side header tank (22) in front is communicated with the liquid inlet pipe (211) of the first side header tank (21) behind through an adapter pipe (23).

10. The heat exchanger of claim 9, wherein, Further comprising a top plate (25) and a bottom plate (26), the top surfaces of the two heat exchange assemblies (2) are connected by the top plate (25), the bottom surfaces of the two heat exchange assemblies (2) are connected by the bottom plate (26), and the left and right sides of the top plate (25) and the bottom plate (26) are respectively connected with the first side header (21) and the second side header (22).

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