Micro-channel heat exchanger flat tube of electric automobile air conditioner heat pump

Abstract

The utility model discloses a micro-channel heat exchanger flat tube of an electric automobile air conditioner heat pump, and relates to the technical field of micro-channel radiators. The electric automobile air conditioner heat pump micro-channel heat exchanger flat pipe comprises a flat pipe body, a plurality of square channels are formed in the flat pipe body at equal intervals, a plurality of triangular protruding strips are fixedly arranged on the inner top walls and the inner bottom walls of the square channels at equal intervals, and a plurality of first heat exchange rods are fixedly arranged on the inner front walls and the inner rear walls of the square channels at equal intervals; and the connecting assembly is used for connecting the flat pipe main body with the mounting pipe. According to the electric automobile air conditioner heat pump micro-channel heat exchanger flat tube, the flat tube main body is arranged, so that the defect that the heat exchange efficiency is low in the prior art is effectively overcome in the actual use process of the electric automobile air conditioner heat pump micro-channel heat exchanger flat tube, and the purpose of rapidly replacing one damaged flat tube main body can be achieved through the arrangement of the connecting assembly; and the maintenance cost is effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of microchannel radiators, in particular to a flat tube of a microchannel heat exchanger of an electric vehicle air-conditioning heat pump. Background Art

[0002] The air conditioning heat pump of an electric vehicle needs to be used in conjunction with a microchannel heat exchanger for heat dissipation when in use. The existing patented flat tube and microchannel heat exchanger, patent announcement number CN218764706U, includes: a tube body and a protrusion. A plurality of protrusions are arranged on the outer surface of the tube body, and gaps are set between the plurality of protrusions. By arranging the protrusions on the outer surface of the tube body, the formation of the boundary layer can be interrupted, the boundary layer can be thinned, and the heat exchange efficiency can be improved. The protrusions and the flat tube are integrally formed, the processing technology is simple, and there is no need to set up additional spoiler components, nor is there any need to form a baffle channel by setting a heat exchange plate with a complex structure. It can not only greatly reduce fluid resistance, reduce energy loss, reduce operating costs, but also reduce production costs. In addition, a groove can be formed between the protrusion and the heat exchange plate, which is conducive to the discharge of condensed water, preventing the condensed water from being accelerated to oxidize due to long-term attachment to the outer surface of the tube body and the surface of the heat exchange plate, thereby preventing the heat exchange efficiency from continuously decreasing during use. The present application also discloses a microchannel heat exchanger.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: during actual use of the flat tubes of the microchannel heat exchanger, the channel shape inside the flat tubes is a regular shape. When the fluid passes through the channel, the heat exchange efficiency between the fluid and the flat tubes is low. Moreover, when one of the several flat tubes on the microchannel radiator is damaged, the entire heat exchanger needs to be replaced, which increases the maintenance cost.

[0004] Therefore, we proposed a microchannel heat exchanger flat tube for electric vehicle air conditioning heat pump to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a flat tube of a microchannel heat exchanger for an electric vehicle air-conditioning heat pump, which solves the problems that the existing flat tubes have low heat exchange efficiency and are difficult to replace individually.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a flat tube of a microchannel heat exchanger for an electric vehicle air conditioner heat pump, comprising:

[0007] A flat tube body, wherein the number of the flat tube bodies is several, and the several flat tube bodies are equidistantly arranged between two mounting tubes on the microchannel heat exchanger of the electric vehicle air conditioner heat pump, the interior of the flat tube body is equidistantly provided with several square channels, and the inner top wall and the inner bottom wall of the square channel are equidistantly fixed with several triangular convex strips, the outer surface of the flat tube body is equidistantly fixed with several heat exchange fins, and the inner front wall and the inner rear wall of the square channel are equidistantly fixed with several first heat exchange rods;

[0008] A connecting assembly is used to connect the flat tube body with the mounting tube. The connecting assembly includes a rectangular connecting tube arranged at the end of the flat tube body, and a U-shaped mounting frame fixed to the outer surface of the end of the rectangular connecting tube. The surface of the U-shaped mounting frame is provided with two symmetrical threaded mounting holes, and the inner walls of the threaded mounting holes are threadedly connected to mounting bolts.

[0009] Preferably, second heat exchange rods extending to the outer surface of the flat tube body are equidistantly embedded in the inner top wall of the square channel, and the outer surface of the second heat exchange rod is fixedly connected to the surface of the heat exchange plate.

[0010] Preferably, the triangular convex strips, the heat exchange plates, the first heat exchange rod and the second heat exchange rod are all made of pure copper.

[0011] Preferably, a sealing ring for sealing the rectangular connecting tube and the outer surface of the mounting tube is fixedly provided on the inner wall of the U-shaped mounting frame, and the sealing ring is made of elastic rubber.

[0012] Preferably, two symmetrical telescopic columns are fixedly provided at the end of the rectangular connecting tube, and a cylindrical cavity which is slidably connected to the outer surfaces of the two telescopic columns is opened at the end of the flat tube body.

[0013] Preferably, a clamping spring is sleeved on the outer surface of the telescopic column, and two ends of the clamping spring are respectively fixedly connected to the ends of the rectangular connecting tube and the flat tube body.

[0014] Preferably, an elastic telescopic tube is fixedly provided on the outer surface of the end of the flat tube body and the outer surface of the end of the rectangular connecting tube, and the material of the elastic telescopic tube is polyurethane.

[0015] Beneficial Effects

[0016] The utility model provides a flat tube of a microchannel heat exchanger for an electric vehicle air conditioner heat pump. Compared with the prior art, it has the following beneficial effects:

[0017] The electric vehicle air-conditioning heat pump microchannel heat exchanger flat tube, by providing a flat tube body, effectively solves the defect of low heat exchange efficiency in the prior art during actual use of the electric vehicle air-conditioning heat pump microchannel heat exchanger flat tube, and by providing a connecting component, a damaged flat tube body can be quickly replaced, effectively saving maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the flat tube main body of the utility model;

[0020] Figure 3 This is a schematic diagram of the side structure of the flat tube main body of the utility model;

[0021] Figure 4 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0022] Figure 5 This is a schematic diagram of the top-sectional structure of a rectangular connecting pipe of the utility model;

[0023] Figure 6 For this utility model Figure 5 Enlarged structural diagram at B in the middle.

[0024] In the figure:

[0025] 100, flat tube body; 101, square channel; 102, triangular convex strip; 103, heat exchange fin; 104, first heat exchange rod; 105, second heat exchange rod;

[0026] 200, installation pipe;

[0027] 300, connecting assembly; 301, rectangular connecting pipe; 302, U-shaped mounting frame; 303, mounting bolts; 304, sealing ring; 305, telescopic column; 306, cylindrical cavity; 307, tightening spring; 308, elastic telescopic tube. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Embodiment 1

[0030] See also Figure 1-6 The utility model provides a technical solution: a flat tube of a microchannel heat exchanger for an electric vehicle air conditioner heat pump, comprising:

[0031] A flat tube body 100, the number of which is several, and the several flat tube bodies 100 are equidistantly arranged between two mounting tubes 200 on the electric vehicle air conditioning heat pump microchannel heat exchanger, the interior of the flat tube body 100 is equidistantly provided with several square channels 101, and the inner top wall and the inner bottom wall of the square channel 101 are equidistantly fixed with several triangular convex strips 102, the outer surface of the flat tube body 100 is equidistantly fixed with several heat exchange fins 103, and the inner front wall and the inner rear wall of the square channel 101 are equidistantly fixed with several first heat exchange rods 104;

[0032] The inner top wall of the square channel 101 is equidistantly embedded with second heat exchange rods 105 extending to the outer surface of the flat tube body 100, and the outer surface of the second heat exchange rods 105 is fixedly connected to the surface of the heat exchange plate 103, effectively increasing the contact area between the inner wall of the square channel 101 and the hot fluid.

[0033] The materials of the triangular convex strip 102, the heat exchange plate 103, the first heat exchange rod 104 and the second heat exchange rod 105 are all pure copper, which improves the efficiency of heat transfer.

[0034] In this embodiment, by providing the flat tube body 100, the flat tube of the electric vehicle air-conditioning heat pump microchannel heat exchanger effectively increases the contact area between the inner wall of the square channel 101 and the hot fluid during actual use, thereby effectively accelerating the heat exchange rate and improving the heat exchange efficiency, thereby effectively solving the defect of low heat exchange efficiency in the prior art.

[0035] Embodiment 2

[0036] On the basis of the first embodiment, and different from the first embodiment,

[0037] A flat tube of a microchannel heat exchanger for an electric vehicle air conditioner heat pump, further comprising:

[0038] The connecting assembly 300 is used to connect the flat tube body 100 with the mounting tube 200. The connecting assembly 300 includes a rectangular connecting tube 301 arranged at the end of the flat tube body 100, and a U-shaped mounting frame 302 fixed on the outer surface of the end of the rectangular connecting tube 301. The surface of the U-shaped mounting frame 302 is provided with two symmetrical threaded mounting holes, and the inner wall of the threaded mounting hole is threadedly connected to the mounting bolt 303.

[0039] A sealing ring 304 is fixedly disposed on the inner wall of the U-shaped installation frame 302 for sealing the rectangular connecting tube 301 and the outer surface of the installation tube 200 , and the sealing ring 304 is made of elastic rubber to avoid leakage of the flat tube body 100 and ensure sealing.

[0040] Two symmetrical telescopic columns 305 are fixedly provided at the end of the rectangular connecting tube 301 , and a cylindrical cavity 306 is opened at the end of the flat tube body 100 , which is respectively slidably connected to the outer surfaces of the two telescopic columns 305 , so that the rectangular connecting tube 301 can move.

[0041] The outer surface of the telescopic column 305 is sleeved with a clamping spring 307, and the two ends of the clamping spring 307 are respectively fixedly connected to the ends of the rectangular connecting tube 301 and the flat tube body 100, so that the clamping spring 307 can clamp and fix the rectangular connecting tube 301 on the surface of the mounting tube 200.

[0042] The outer surfaces of the ends of the flat tube body 100 and the rectangular connecting tube 301 are both fixed with elastic telescopic tubes 308 . The elastic telescopic tubes 308 are made of polyurethane, so that the rectangular connecting tube 301 can be telescopic without leakage.

[0043] In this embodiment, by providing the connection assembly 300 , the purpose of quickly replacing a damaged flat tube body 100 can be achieved, thereby effectively saving maintenance costs.

[0044] During operation, in the actual use of the flat tube of the electric vehicle air conditioning heat pump microchannel heat exchanger, after the hot fluid passes through the square channel 101 inside the flat tube body 100, it can quickly exchange heat with the outside air under the action of the heat exchange plate 103 to achieve heat dissipation, and the arrangement of the plurality of triangular convex strips 102, the first heat exchange rod 104 and the second heat exchange rod 105 inside the square channel 101 effectively increases the contact area between the inner wall of the square channel 101 and the hot fluid, thereby effectively accelerating the heat exchange rate and improving the heat exchange efficiency, thereby effectively solving the defect of low heat exchange efficiency in the prior art, and when a flat tube body 1 is required, When the flat tube body 100 is damaged, the four mounting bolts 303 corresponding to the flat tube body 100 can be removed first, and then the U-shaped mounting frame 302 can be squeezed toward the middle to quickly disassemble the flat tube body 100. During installation, the U-shaped mounting frames 302 at both ends of the flat tube body 100 are squeezed first to make them fit between the two mounting tubes 200. Then, the rectangular connecting tubes 301 at both ends of the flat tube body 100 can be pressed against the surface of the mounting tube 200 under the action of the pressing spring 307. Finally, the mounting bolts 303 can be tightened to achieve the purpose of quickly replacing a damaged flat tube body 100, which effectively saves maintenance costs.

[0045] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A flat tube of a microchannel heat exchanger for an electric vehicle air conditioning heat pump, characterized in that: include: A flat tube body (100), wherein the number of the flat tube bodies (100) is several, and the several flat tube bodies (100) are equidistantly arranged between two mounting tubes (200) on a microchannel heat exchanger of an electric vehicle air conditioner heat pump, the interior of the flat tube body (100) is provided with several square channels (101) at equal intervals, and the inner top wall and the inner bottom wall of the square channel (101) are both equidistantly fixed with several triangular convex strips (102), the outer surface of the flat tube body (100) is fixedly provided with several heat exchange fins (103) at equal intervals, and the inner front wall and the inner rear wall of the square channel (101) are both equidistantly fixed with several first heat exchange rods (104); A connecting assembly (300) is used to connect a flat tube body (100) with a mounting tube (200), the connecting assembly (300) comprising a rectangular connecting tube (301) arranged at the end of the flat tube body (100), and a U-shaped mounting frame (302) fixed to the outer surface of the end of the rectangular connecting tube (301), the surface of the U-shaped mounting frame (302) being provided with two symmetrical threaded mounting holes, the inner walls of the threaded mounting holes being threadedly connected to mounting bolts (303).

2. The flat tube of the microchannel heat exchanger for the electric vehicle air conditioning heat pump according to claim 1, characterized in that: Second heat exchange rods (105) extending to the outer surface of the flat tube body (100) are equidistantly embedded in the inner top wall of the square channel (101), and the outer surface of the second heat exchange rod (105) is fixedly connected to the surface of the heat exchange plate (103).

3. The flat tube of the microchannel heat exchanger for the electric vehicle air conditioning heat pump according to claim 2, characterized in that: The triangular convex strip (102), the heat exchange plate (103), the first heat exchange rod (104) and the second heat exchange rod (105) are all made of pure copper.

4. The flat tube of the microchannel heat exchanger for an electric vehicle air conditioner heat pump according to claim 1, characterized in that: A sealing ring (304) is fixedly provided on the inner wall of the U-shaped installation frame (302) for sealing the rectangular connecting tube (301) and the outer surface of the installation tube (200), and the sealing ring (304) is made of elastic rubber.

5. The flat tube of the microchannel heat exchanger for an electric vehicle air conditioner heat pump according to claim 1, characterized in that: Two symmetrical telescopic columns (305) are fixedly provided at the end of the rectangular connecting tube (301), and a columnar cavity (306) is provided at the end of the flat tube body (100) and is respectively slidably connected to the outer surfaces of the two telescopic columns (305).

6. The flat tube of the microchannel heat exchanger for the electric vehicle air conditioning heat pump according to claim 5, characterized in that: The outer surface of the telescopic column (305) is sleeved with a tightening spring (307), and the two ends of the tightening spring (307) are respectively fixedly connected to the ends of the rectangular connecting tube (301) and the flat tube body (100).

7. The flat tube of the microchannel heat exchanger for an electric vehicle air conditioner heat pump according to claim 1, characterized in that: An elastic telescopic tube (308) is fixedly provided on the outer surface of the end of the flat tube body (100) and the outer surface of the end of the rectangular connecting tube (301). The material of the elastic telescopic tube (308) is polyurethane.

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