V-shaped heat exchange fin structure of air conditioner heat exchange device

Abstract

The utility model discloses a V-shaped heat exchange fin structure of an air conditioner heat exchange device, belongs to the technical field of air conditioners, and solves the technical problems of large heat exchange wind resistance, poor heat exchange effect and high manufacturing cost of a fin heat exchanger close to a top plate in the prior art. The utility model discloses a V-shaped heat exchange fin structure of an air conditioner heat exchange device. A heat exchange fin arc-shaped fin is of an integrated structure and is defined by a left side external line L1, a right side external line L2, an upper end external line L3 and a lower end external line L4. The left outer line L1 and the right outer line L2 are bent in the direction away from an air outlet of the turbofan, and the width of the two end areas of the heat exchange fins is smaller than that of the middle areas of the heat exchange fins. The overall height of the heat exchange fin is H1, the distance between the highest point of the heat exchange fin and the horizontal central axis L5 is H2, the distance between the lowest point of the heat exchange fin and the horizontal central axis L5 is H3, and the ratio of H2 to H3 is not 1.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a V-shaped heat exchange fin structure of an air conditioning heat exchange device. Background Art

[0002] The existing fin heat exchanger does not respond to the uneven wind field of the turbofan. The turbofan is installed on the top plate of the indoor air conditioner. The wind speed near the top plate is greater than the wind speed near the water tray. The existing fin heat exchanger has a large heat exchange resistance near the top plate, which reduces the heat exchange effect.

[0003] Existing V-shaped cross-fin heat exchangers are constructed by joining two heat exchangers together using C-shaped hooks and sealing sheets to form a V-shape. This design supports wind fields with uniform wind speed distribution. However, the wind speed in a turbofan's wind field is actually non-uniform, with higher speeds near the top panel. The V-shaped heat exchanger's proximity to the fan near the top panel creates greater wind resistance, impacting heat transfer efficiency. Summary of the Invention

[0004] In response to the shortcomings and deficiencies in the prior art, the utility model provides a V-shaped heat-cross fin structure for an air-conditioning heat exchange device that adopts an integrated arc-shaped fin with external lines on the left and right sides, performs an asymmetric arc design on the heat exchange fins and realizes integrated processing, thereby improving the heat exchange capacity of the indoor air conditioner; adapts to the wind field design of the turbofan to improve the heat exchange effect of the indoor unit heat exchanger and integrates the fin processing technology without splicing, thereby improving the cooling and heating capacity of the air-conditioning unit and reducing the fin processing cost.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a V-shaped heat exchange fin structure for an air conditioning heat exchange device, wherein the arc-shaped heat exchange fin is formed by the left outer line L1, the right outer line L2, the upper outer line L3 and the lower outer line L4 to form an integrated structure of the arc-shaped heat exchange fin;

[0006] The left outer line L1 and the right outer line L2 are both bent away from the turbofan outlet, and the width of the end areas of the heat exchange fin is smaller than the width of the middle area;

[0007] The overall height of the heat exchange fin is H1, the distance between the highest point of the heat exchange fin and the horizontal central axis L5 is H2, and the distance between the lowest point of the heat exchange fin and the horizontal central axis L5 is H3, and the ratio of H2 / H3 is not 1.

[0008] Preferably, the overall height H1 of the heat exchange fin, the distance H2 from the highest point of the heat exchange fin to the horizontal central axis L5, and the distance H3 from the lowest point of the heat exchange fin to the horizontal central axis L5, and the ratio H2 / H3 are 0.76-0.8.

[0009] Preferably, the overall height H1 of the heat exchange fin is 166±0.1 mm; the overall width H4 of the heat exchange fin is 109±3 mm.

[0010] Preferably, the tip of the upper end of the arc-shaped heat exchange fin is a chamfered structure, and the direct segment S7 constituting the chamfer is perpendicular to the straight line S5; the tip of the lower end of the arc-shaped heat exchange fin is also a chamfered structure, and the direct segment S8 constituting the chamfer is perpendicular to the straight line S6;

[0011] The arc-shaped fins are formed by integral stamping; or they are divided along the horizontal center axis L5 into two upper and lower heat exchange fins that can be spliced into one piece.

[0012] Preferably, the left outer line L1 is composed of a central curved line S1, an upper straight line S2, and a lower straight line S3, and the right outer line L2 is composed of a central curved line S4, an upper straight line S5, and a lower straight line S6; the right outer line L2 is obtained by translating the left outer line L1;

[0013] Among them, the arc line S1 is symmetrical about the horizontal center axis L5 of the fin, the arc line S4 is symmetrical about the horizontal center axis L5 of the fin, more than 60% of the length of the straight line S3 is obtained by the vertical symmetry of the straight line S2 about the horizontal center axis L5 of the fin, and more than 55% of the length of the straight line S6 is obtained by the vertical symmetry of the straight line S5 about the horizontal center axis L5 of the fin, so as to realize the symmetry of the area of the upper part of the heat exchange fin about the horizontal center axis L5.

[0014] Preferably, the width of the arc-shaped fin is the distance Wn between any point on the left outer line L1 and the intersection of the left outer line L1 and the right outer line L2 along the normal direction of the left outer line L1 at this point;

[0015] The maximum peak width W of the arc-shaped heat exchange fin is the distance between the intersection points P1 and P2 of the left and right outer lines L1 and L2 and the horizontal central axis L5 respectively;

[0016] The width of the arc-shaped heat exchange fins gradually decreases from the horizontal center axis L5 toward the upper and lower ends respectively.

[0017] Preferably, the heat exchange fins are provided with rows of copper tube holes, and the heat exchange fins are provided with 2-3 rows of copper tube holes for allowing hot copper tubes to pass through them for the heat exchange medium to flow therein;

[0018] The arrangement of the copper tube holes matches the actual width of the heat exchange fins. Three rows of tube holes are arranged in the middle area of the heat exchange fins, and two rows of tube holes are arranged in the upper and lower end areas of the heat exchange fins respectively.

[0019] Preferably, three rows of tube holes are distributed in the middle area on both sides of the maximum peak width W of the heat exchange fin, and three rows of tube holes are also provided on the heat exchange fin at a height of 0.15H1 above and below the horizontal central axis L5. The four rows and three rows of tube holes are of the same size and are symmetrically arranged above and below the horizontal central axis L5.

[0020] Two rows of tube holes are distributed in the upper and lower end areas of the fins, and there are 8 tube holes on the upper end of the heat exchange fins, and 12 tube holes on the lower end of the heat exchange fins.

[0021] Preferably, the curve obtained by translating the connection trajectory curve of the tube hole centers of each row of the heat exchange fin tube holes can overlap with the curve of the left outer contour line L1;

[0022] Among them, in the three rows of tube holes, the distance d1 between two adjacent rows of tube holes is 17.5 mm; in the two rows of tube holes, the distance d2 between two adjacent rows of tube holes is 14.5 mm.

[0023] Preferably, the heat exchange fins are further provided with a plurality of surface windows for uniformly distributing wind resistance at different positions of the arc-shaped heat exchange fins and reducing drainage difficulty;

[0024] Located on the heat exchange fin, the number of surface windows and the number of windows in the middle area are less than the number of surface windows and the number of windows at the upper and lower ends.

[0025] The utility model provides a V-shaped heat exchange fin structure for an air conditioning heat exchange device. It has the following beneficial effects:

[0026] (1) The V-shaped heat-crossing fin structure of the air-conditioning heat exchange device of the present invention can solve the problem of the incompatibility between the wind resistance of the heat exchange fin and the wind field of the turbine fan, change the processing inconvenience of the spliced fins and reduce the processing cost, design the heat exchange fins into an asymmetric arc and realize integrated processing, thereby improving the heat exchange capacity of the indoor air conditioner.

[0027] (2) The V-shaped heat exchange fin structure of the air-conditioning heat exchange device of the utility model has an ingenious structural design, which significantly improves the heat exchange effect of the existing V-shaped fins, reduces the fin processing cost, and the heat exchange area distribution is more suitable for the wind field design of the turbofan. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of the heat exchange fin of the utility model;

[0029] Figure 2 This utility model is a schematic diagram of the fin hole outline structure;

[0030] Figure 3 This is a schematic diagram of the fin hole position structure of the utility model;

[0031] Figure 4 This is a schematic structural diagram of the fin hole and window structure of the utility model;

[0032] Figure 5 This is a schematic structural diagram of a top view of a window opening of the present invention;

[0033] Figure 6 This is a schematic diagram of the position diagram of the fins and turbofan of the utility model.

[0034] In the figure: L1 is the left outer line, L2 is the right outer line, L3 is the upper outer line, L4 is the lower outer line, 5 is the copper tube hole, 6 is the surface window, L5 is the horizontal center axis of the heat exchange fin, P1 is the intersection of the left outer line L1 and the horizontal center axis L5, P2 is the intersection of the right outer line L2 and the horizontal center axis L5, P3 is the intersection of the arc line S1 and the straight line S2, P4 is the intersection of the arc line S1 and the straight line S3, P5 is the intersection of the arc line S4 and the straight line S5, P6 is the intersection of the arc line S4 and the straight line S6; H1 is the overall height of the heat exchange fin, H2 is the distance from the highest point of the fin to the horizontal center axis L5, H3 is the distance from the lowest point of the fin to the horizontal center axis L5, H4 is the overall width of the heat exchange fin; W is the width of the heat exchange fin between the left outer line L1 and the right outer line L2 of the heat exchange fin;

[0035] K1-K32 are fin holes, and all hole sizes have the same specifications; X1-X10 are the center lines of the fin holes; X11 is the vertical line; A1 is the width of the fin end; A2 is the distance between the center line and the fin edge; A3 is the distance between the center line and the fin edge; A4 is the hole spacing; A5 is the hole spacing; A6 is the line distance; A7 is the line distance;

[0036] d1 is the hole spacing in the middle area, d2 is the hole spacing in the parallel areas at both ends, d3 is the hole spacing in the transition area, and d4 is the hole spacing in the transition area;

[0037] C1 is the outer diameter of the hole flange, C2 is the inner diameter of the flange hole; C3 is the flange hole height, C4 is the window peak height, C5 is the window height, C6 is the window positioning distance, C7 is the window length, C8 is the window length, C9 is the window positioning distance, and C10 is the waveform height;

[0038] C11 is the window opening distance; C12 is the window opening edge arc;

[0039] E1 height refers to the height difference between the center line of the fan impeller and the center axis of the fin L5; E2 horizontal distance refers to the horizontal distance between the center line of the fan impeller and the fin point P1. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0042] See also Figure 1-6 , the utility model provides a technical solution:

[0043] The V-shaped heat exchange fin structure of an air conditioner heat exchanger provided by this utility model is an integrated arc-shaped heat exchange fin structure formed by a left outer line L1, a right outer line L2, an upper outer line L3, and a lower outer line L4. This arc-shaped fin can be stamped into a single piece, facilitating processing. The heat exchange fins are provided with 2-3 rows of copper tube holes 5, through which hot copper tubes are inserted for the flow of heat exchange medium. The heat exchange fins are also provided with multiple surface openings to even out wind resistance at different locations of the arc-shaped heat exchange fins and reduce drainage difficulties.

[0044] The left and right outer lines L1 and L2 both curve away from the turbofan outlet, and the width of the heat exchange fin's end areas is narrower than the width of its center area. The overall heat exchange fin height H1, the distance H2 from the highest point of the heat exchange fin to the horizontal center axis L5, and the distance H3 from the lowest point of the heat exchange fin to the horizontal center axis L5 are all different. The optimal heat exchange effect is achieved when the overall heat exchange fin height H1 is 166±0.1mm, the overall heat exchange fin width H4 is 109±3mm, and the H2 / H3 ratio is 0.76-0.8.

[0045] Left-side outer line L1 is composed of a central curved line S1, an upper straight line S2, and a lower straight line S3. Right-side outer line L2 is composed of a central curved line S4, an upper straight line S5, and a lower straight line S6. Curved lines S1 and S4 are both circular arcs with the same diameter, and their centers lie on horizontal central axis L5. Straight lines S2 and S5 are parallel, while straight lines S3 and S6 are parallel. Right-side outer line L2 is obtained by translating left-side outer line L1.

[0046] Among them, the arc line S1 is symmetrical about the horizontal center axis L5 of the fin, the arc line S4 is symmetrical about the horizontal center axis L5 of the fin, more than 60% of the length of the straight line S3 is obtained by the vertical symmetry of the straight line S2 about the horizontal center axis L5 of the fin, and more than 55% of the length of the straight line S6 is obtained by the vertical symmetry of the straight line S5 about the horizontal center axis L5 of the fin, so as to realize the symmetry of the area of the upper part of the heat exchange fin about the horizontal center axis L5.

[0047] The tip of the upper end of the arc-shaped fin is a cut-angle structure, and the direct segment S7 constituting the cut-angle is perpendicular to the straight line S5. The tip of the lower end of the arc-shaped fin is also a cut-angle structure, and the direct segment S8 constituting the cut-angle is perpendicular to the straight line S6.

[0048] The intersection of L3 and S2 is chamfered, and the chamfer size is greater than 0.5mm; the intersection of L3 and S7 is chamfered, and the chamfer size is greater than 0.5mm; the intersection of S5 and S7 is chamfered, and the chamfer size is greater than 0.5mm; the intersection of L4 and S3 is chamfered, and the chamfer size is greater than 0.5mm; the intersection of L4 and S8 is chamfered, and the chamfer size is greater than 0.5mm; the intersection of S8 and S6 is chamfered, and the chamfer size is greater than 0.5mm.

[0049] The angle J between the straight line S2 and the horizontal central axis L5 is 42°. When the distance between the vortex fan is fixed, this angle has a small effect on the wind field resistance.

[0050] The width of the curved heat exchange fin is the distance Wn between any point on the left outer line L1 and the intersection of the left outer line L1's normal line with the right outer line L2. 6. For the actual curved fin width, for example, the distance Wn between reference point P3 on the left outer line L1 and the intersection P3' of the left outer line L1's normal line at reference point P3 and the right outer line L2 along the normal line of the left outer line L1 is the fin width at that point. The maximum peak width W of the curved heat exchange fin is the distance between the intersection points P1 and P2 of the left and right outer lines L1 and L2 with the horizontal central axis L5. The fin width gradually decreases from the horizontal central axis L5 to the upper and lower ends.

[0051] The maximum peak width W of the arc-shaped heat exchange fin is the distance between the intersection points P1 and P2 of the left and right outer lines L1 and L2 and the horizontal central axis L5 respectively; the width change trend of the arc-shaped heat exchange fin is gradually decreasing from the horizontal central axis L5 to the upper and lower ends respectively.

[0052] like Figure 2As shown, the heat exchange fins are provided with rows of copper tube holes. There are 2-3 rows of copper tube holes on the heat exchange fins, which are used to allow hot copper tubes to penetrate through them for the heat exchange medium to flow inside. The arrangement layout of the copper tube holes matches the actual width of the heat exchange fins. Three rows of tube holes are set in the middle area of the heat exchange fins, and two rows of tube holes are set in the upper and lower end areas of the heat exchange fins respectively, so that the distribution of the inserted heat exchange copper tubes can match the characteristics of the turbine fan wind field, adapt to the high flow rate in the middle, the higher flow rate at the upper end and the low flow rate at the lower end, and improve the heat exchange effect. Three rows of tube holes are distributed in the middle area on both sides of the maximum peak width W of the heat exchange fins, and three rows of tube holes are also provided on the heat exchange fins at a height of 0.15H1 above and below the horizontal central axis L5. The above four rows of tube holes are of the same size and are symmetrically arranged on the upper and lower sides of the horizontal central axis L5; two rows of tube holes are distributed in the upper and lower end areas of the fins, and there are 8 tube holes on the upper end of the heat exchange fins, and 12 tube holes on the lower end of the heat exchange fins.

[0053] The curve of the connection trajectory curve of the center of each row of the heat exchange fin tube holes is translated and can overlap with the curve of the left outer contour line L1. Among them, in the three rows of tube holes, the distance d1 between two adjacent rows of tube holes is 17.5 mm; in the two rows of tube holes, the distance d2 between two adjacent rows of tube holes is 14.5 mm.

[0054] K1-K32 are fin holes, and all hole sizes have the same specifications; X1-X10 are the center lines of the fin holes; X11 is the vertical line; A1 is the width of the fin end; A2 is the distance between the center line and the fin edge; A3 is the distance between the center line and the fin edge; A4 is the hole spacing; A5 is the hole spacing; A6 is the line distance; A7 is the line distance;

[0055] Holes K1 to K14 all fall on the center line of the X1 fin, which is an arc. The distance between the center line of the X1 fin and the outer edge of the fin is A2 = A1 / 4.

[0056] The holes K19 to K22 fall on the center line of circle X2, which is a straight line.

[0057] The holes K27 to K32 fall on the center line of X10, which is a straight line.

[0058] The holes K23 and K24 fall on the center line of circle X4, which is a straight line.

[0059] The holes K25 and K26 fall on the center line of X9; the center line of X9 is a straight line; the center line of X9 and the center line of X4 are mirror images of each other with the central axis of L5 as the center;

[0060] The holes K15 and K16 fall on the center line of circle X5, which is a straight line.

[0061] The holes of K17 and K18 fall on the center line of X8; the center line of X8 is a straight line; the center line of X8 and the center line of X5 are mirror images of each other with the central axis of L5 as the center;

[0062] The distance between the center line of X3 and the outer edge of the fin is A3, A3=A2, and the center line of the fin X3 is an arc;

[0063] The center points of K19 / K20 / K21 / K24 / K25 / K28 / K29 / K30 / K31 / K32 all fall on the center line of X3.

[0064] A4 hole spacing refers to the horizontal distance between the K6 fin hole and the K16 fin hole;

[0065] A5 hole spacing refers to the horizontal distance between the K16 fin hole and the K24 fin hole; A5=2A4;

[0066] The center points of the K6 fin hole, K16 fin hole and K24 fin hole are located on the same horizontal line;

[0067] The center line of X5 is parallel to the center line of X6; the center line of X5 is also parallel to the center line of X4;

[0068] The vertical line X11 starts from the center point of the K1 fin hole and is perpendicular to the center line of the X2 circle. The distance between its foot point and the K20 hole is A6, and the distance between its foot point and the K19 hole is A7; where A7 / A6=2.8-3.0;

[0069] The K6 fin hole and the K7 fin hole are symmetrical with respect to the central axis of L5; the K5 fin hole and the K8 fin hole are symmetrical with respect to the central axis of L5; the K16 fin hole and the K17 fin hole are symmetrical with respect to the central axis of L5; the K15 fin hole and the K18 fin hole are symmetrical with respect to the central axis of L5; the K24 fin hole and the K25 fin hole are symmetrical with respect to the central axis of L5; the K23 fin hole and the K26 fin hole are symmetrical with respect to the central axis of L5.

[0070] d1 is the hole spacing in the middle area, d2 is the hole spacing in the parallel areas at both ends, d3 is the hole spacing in the transition area, and d4 is the hole spacing in the transition area. The hole spacing size of d1 is larger than the hole spacing size of d2. The hole spacing size of d1 is centered on the central axis of L5 and is symmetrically distributed on the upper and lower sides of the central axis of L5; d1=17-18mm; d2=14-14.5mm; the hole spacing size of d3 is larger than the hole spacing size of d4, and the hole spacing size of d4 is larger than the hole spacing size of d1; d3=20-22mm; d4=19-21mm.

[0071] The heat exchange fins are also provided with a plurality of surface openings 6 for equalizing the air resistance at different positions of the arc-shaped heat exchange fins and reducing the difficulty of drainage; located on the heat exchange fins, the number of surface openings 6 and the number of openings in the middle region are less than those in the upper and lower end regions. In addition to the tube holes 5, the heat exchange fins are provided with surface openings 6 of different sizes and areas. The surface openings 6 can improve the overall heat transfer coefficient of the heat exchange fins, which is mainly affected by the different number of openings, the overall area and the size of the surface openings 6. The width of the heat exchange fins gradually decreases from the horizontal central axis L5 to both ends, and the number of tube holes 5 also gradually decreases from the horizontal central axis L5 to both ends. The overall heat exchange effect in the middle region of the heat exchange fins is greater than that in the two end regions. Therefore, the number of surface openings 6 and the number of openings in the middle are less, while the number and the number of openings at both ends are more, which can strengthen the heat exchange effect at the original two ends and reduce the difference in heat exchange effect in different regions of the fins as a whole. Moreover, the lower end region of the fins is close to the water receiving tray side, and there is a problem of condensate drainage. The number of surface openings 6 in the lower end region is less than that in the upper end region, which enhances the drainage capacity of the lower end region.

[0072] As Figure 5 shown, C11 is the opening distance; C12 is the opening edge arc; C11 opening distance = 1.5 - 2.0; C12 opening edge arc is a circular arc with the same center as the fin hole, C12 > C1. C1 is the outer diameter of the hole flanging, C2 is the inner diameter of the flanged hole; C3 is the height of the flanged hole, C4 is the peak height of the opening, C5 is the height of the opening, C6 is the opening positioning distance, C7 is the length of the opening, C8 is the length of the opening, C9 is the opening positioning distance, C10 is the waveform height; the diameter dimension of the flanged hole C1 / C2 = 1.1 - 1.2; the height dimension of the flanged hole C3 = 1.1 - 1.4 mm; the inner chamfer dimension of the flanged hole is R0.4. The opening angle of the fin with openings is 20°; the height dimension of the opening C4 / the height of the flanged hole C3 = 0.5 - 0.7; the height dimension of the opening C5 = C4 / 2; C6 opening positioning distance > C7 length of the opening; C7 length of the opening < C8 length of the opening; C9 opening positioning distance < C6 opening positioning distance; C10 waveform height = 0.1 - 0.3, the shape is conical, and the angle between the two straight sides is 60°.

[0073] As Figure 6 shown, the position diagram of the fin and the turbine fan, the height E1 refers to the height difference between the center line of the fan impeller and the central axis L5 of the fin; E1 / H2 = 0.095 - 0.097; the horizontal distance E2 refers to the horizontal distance between the center line of the fan impeller and the point P1 of the fin, E2 / H4 = 1.67 - 1.69.

[0074] The heat exchange fins are set up so that the fins are narrow at both end areas and wide in the middle area, and the distance between the middle area and the turbine fan outlet is greater than the distance between the upper area and the turbine fan outlet and greater than the distance between the lower area and the turbine fan. This can adapt to the high flow velocity area in the middle and the higher flow velocity area in the upper part of the turbine fan, meeting the characteristics of turbine fan wind field matching.

[0075] In summary, the V-shaped heat-crossing fin structure of an air-conditioning heat exchange device of the utility model has a simple and ingenious structure, low production cost, and is more convenient to process while reducing material consumption. It can be adjusted according to the actual fin width and the difference in distribution tube holes to achieve a higher heat exchange effect for the uneven turbine fan and the wind field. The heat exchange area distribution is more suitable for the wind field design of the turbine fan, and the heat exchange effect of the V-shaped fin is significantly improved.

[0076] The above are only embodiments of the present invention. For example, the arc-shaped fins are formed by integral stamping; or they are divided into two upper and lower heat exchange fins along the horizontal central axis L5 and can be spliced into one piece, both of which can realize the V-shaped heat exchange fin structure of the air-conditioning heat exchange device of the present invention.

[0077] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A V-shaped heat exchange fin structure for an air conditioning heat exchange device, characterized in that: The arc-shaped heat exchange fins are formed by the left outer line L1, the right outer line L2, the upper outer line L3 and the lower outer line L4 to form an integrated structure of the arc-shaped heat exchange fins; The left outer line L1 and the right outer line L2 are both bent away from the turbofan air outlet, and the width of the end areas of the heat exchange fin is smaller than the width of the middle area; The overall height of the heat exchange fin is H1, the distance between the highest point of the heat exchange fin and the horizontal central axis L5 is H2, and the distance between the lowest point of the heat exchange fin and the horizontal central axis L5 is H3, and the ratio of H2 / H3 is not 1.

2. The V-shaped heat exchange fin structure of an air conditioning heat exchange device according to claim 1, characterized in that: The overall height H1 of the heat exchange fin, the distance H2 from the highest point of the heat exchange fin to the horizontal central axis L5, and the distance H3 from the lowest point of the heat exchange fin to the horizontal central axis L5, and the ratio H2 / H3 are 0.76-0.

8.

3. The V-shaped heat exchange fin structure of an air conditioning heat exchange device according to claim 1, characterized in that: The overall height H1 of the heat exchange fin is 166±0.1 mm; the overall width H4 of the heat exchange fin is 109±3 mm.

4. The V-shaped heat exchange fin structure of an air conditioning heat exchange device according to claim 1, characterized in that: The tip of the upper end of the heat exchange fin is a chamfered structure, and the direct section S7 constituting the chamfer is perpendicular to the straight line S5. The tip of the lower end of the heat exchange fin is also a chamfered structure, and the direct section S8 constituting the chamfer is perpendicular to the straight line S6. The heat exchange fins are formed by integral stamping; or are divided along the horizontal central axis L5 into two upper and lower heat exchange fins that can be spliced into one.

5. The V-shaped heat exchange fin structure of an air conditioning heat exchange device according to claim 1, characterized in that: The left outer line L1 is composed of a central curved line S1, an upper straight line S2, and a lower straight line S3. The right outer line L2 is composed of a central curved line S4, an upper straight line S5, and a lower straight line S6. The right outer line L2 is obtained by translating the left outer line L1. Among them, the arc line S1 is symmetrical about the horizontal center axis L5 of the fin, the arc line S4 is symmetrical about the horizontal center axis L5 of the fin, the straight line S3 with a length exceeding 60% is obtained by the straight line S2 being symmetrical about the horizontal center axis L5 of the fin, and the straight line S6 with a length exceeding 55% is obtained by the straight line S5 being symmetrical about the horizontal center axis L5 of the fin, so as to realize that the area where the upper part of the heat exchange fin is located is symmetrical about the horizontal center axis L5.

6. The V-shaped heat exchange fin structure of an air conditioning heat exchange device according to claim 1, characterized in that: The width of the heat exchange fin is the distance Wn between any point on the left outer line L1 and the intersection of the left outer line L1 and the right outer line L2 along the normal direction of the left outer line L1 at this point; The maximum peak width W of the heat exchange fin is the distance between the intersection points P1 and P2 of the left and right outer lines L1 and L2 and the horizontal central axis L5 respectively; The width of the heat exchange fins changes in a trend of gradually decreasing from the horizontal central axis L5 toward the upper and lower ends respectively.

7. The V-shaped heat exchange fin structure of an air conditioning heat exchange device according to claim 1, characterized in that: The heat exchange fins are provided with copper tube holes (5) arranged in rows, and the heat exchange fins are provided with 2-3 rows of several copper tube holes (5) for allowing hot copper tubes to be inserted therein for heat exchange medium to flow therein; The arrangement layout of the copper tube holes (5) matches the actual width of the heat exchange fins, with three rows of copper tube holes (5) being arranged in the middle region of the heat exchange fins, and two rows of copper tube holes (5) being arranged in the upper and lower end regions of the heat exchange fins, respectively.

8. The V-shaped heat exchange fin structure of an air conditioning heat exchange device according to claim 7, characterized in that: Three rows of tube holes (5) are distributed in the middle area on both sides of the maximum peak width W of the heat exchange fin, and three rows of copper tube holes (5) are also respectively provided on the heat exchange fin at a height of 0.15H1 above and below the horizontal central axis L5. The four rows and three rows of copper tube holes (5) are of the same size and are respectively arranged symmetrically above and below the horizontal central axis L5. Two rows of copper tube holes (5) are distributed in the upper and lower end regions of the fins, and the number of copper tube holes (5) provided on the upper end of the heat exchange fins is 8, and the number of copper tube holes (5) provided on the lower end of the heat exchange fins is 12.

9. The V-shaped heat exchange fin structure of an air conditioning heat exchange device according to claim 8, characterized in that: The center connection trajectory curve of each row of copper tube holes (5) on the heat exchange fin is translated so that the curve can overlap with the curve of the left outer line L1; Among them, in the copper tube holes (5) arranged in three rows, the distance d1 between two adjacent rows of copper tube holes (5) is 17.5 mm; in the copper tube holes (5) arranged in two rows, the distance d2 between two adjacent rows of copper tube holes (5) is 14.5 mm.

10. The V-shaped heat exchange fin structure of an air conditioning heat exchange device according to claim 1, characterized in that: The heat exchange fin is also provided with a plurality of surface windows (6) for uniformly distributing wind resistance at different positions of the arc-shaped heat exchange fin and reducing drainage difficulty; Located on the heat exchange fin, the number of surface windows (6) and the number of windows in the middle region are less than the number of surface windows (6) and the number of windows in the upper and lower ends.

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