An air conditioner

Abstract

The present invention discloses an air conditioner, comprising: a heat exchanger, the heat exchanger including multiple groups of fins; the fins are provided with heat pipe insertion parts, and along the flowing direction of the heat exchange medium, the following are sequentially formed on the fins: in a first flow region, a first corrugated part and a second corrugated part are alternately arranged at intervals; in a second flow region, a third corrugated part is provided, the heat pipe insertion part is located in the second flow region, and the heat pipe insertion part and the third corrugated part are alternately arranged; in a third flow region, a fourth corrugated part and a fracture part are alternately arranged at intervals, and the fracture part is opposite to the first corrugated part and the third corrugated part in position; a second flow channel is formed between the first corrugated part, the third corrugated part and the fracture part of adjacent fins along the flowing direction of the heat exchange medium, and the second flow channel can reduce the frosting amount of the fins on the windward side and enable the frost to condense at the fracture part. The present invention solves the problems of low heat transfer coefficient and high frosting rate of the existing heat exchanger of the air conditioner, which are prone to block the air duct.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and particularly relates to an improvement in the structure of an air conditioner. Background Art

[0002] When an air conditioner operates in a low-temperature and high-humidity environment, there are problems such as too fast frosting rate of the outdoor unit and short defrosting interval, which have an adverse impact on the heating comfort of the room and the energy efficiency of the air conditioner. From the perspective of the heat exchanger, the existing outdoor units of air conditioners generally adopt two forms: flat fins or slotted fins. Among them, the flat fins have a low heat transfer coefficient under the condensation condition, resulting in poor heat transfer performance; the slotted fins have a high heat transfer coefficient, but the fin ducts are prone to frost blockage under the low-temperature evaporation condition, causing a sharp decline in heat transfer performance.

[0003] For the existing fin forms, whether they are slotted or flat fins, they cannot simultaneously meet the requirements of a relatively high heat transfer coefficient under the condensation condition of the outdoor unit and a relatively low frosting rate under the low-temperature evaporation condition.

[0004] The above information disclosed in this background art is only used to increase the understanding of the background art of the present application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0005] The present invention aims at the problems of low heat transfer coefficient or high frosting rate of the fins in the existing air conditioners, which are prone to block the air ducts.

[0006] To achieve the above-mentioned invention purpose, the present invention adopts the following technical solutions:

[0007] An air conditioner, comprising:

[0008] A heat exchanger for performing heat exchange with the outside during refrigeration and heating, the heat exchanger including a plurality of groups of fins;

[0009] The fins include:

[0010] A heat pipe insertion part is provided on the fins, and along the flow direction of the heat exchange medium, the following are sequentially formed on the fins:

[0011] A first flow area, in which a first corrugated part and a second corrugated part are alternately arranged at intervals;

[0012] A second flow area, in which a second corrugated part is provided in the first flow area, the heat pipe insertion part is located in the second flow area, and the heat pipe insertion part and the third corrugated part are alternately arranged;

[0013] A third flow area, in which a fourth corrugated part and a fracture part are alternately arranged at intervals, and the fracture part is opposite to the first corrugated part and the third corrugated part in position;

[0014] A second flow channel is formed between the first corrugated portion, the third corrugated portion and the fracture portion of adjacent fins, and is arranged along the flow direction of the heat exchange medium. The second flow channel can reduce the frosting amount of the fins on the windward side and cause the frost to condense at the fracture portion.

[0015] Furthermore, a first flow channel is formed between the second corrugated portion, the third corrugated portion and the fourth corrugated portion of adjacent fins, and is arranged along the flow direction of the heat exchange medium and can flow through the heat pipe insertion portion.

[0016] Furthermore, it further includes:

[0017] A third flow channel is formed along the flow direction of the heat exchange medium and is located between the first flow channel and the second flow channel.

[0018] The third flow channel is used to isolate the frost condensed in the second flow channel to prevent it from spreading to the second corrugated portion and the fourth corrugated portion of the fins.

[0019] Furthermore, it further includes:

[0020] Two fracture bases are provided and are arranged oppositely. The fracture portion is formed between the two fracture bases.

[0021] Furthermore, one of the fracture bases is arranged to be inclined downward relative to the fins, and the other fracture base is arranged to be inclined upward relative to the fins. The fracture base and the fins have an included angle, and the angle of the included angle is 25-30 degrees.

[0022] Furthermore, the distance between the two fracture bases is half of the distance between two fins and the cosine value of the included angle between the fin base and the fins.

[0023] Furthermore, the peak point heights of the first corrugated portion and the second corrugated portion are the same or different, and the lengths of the first corrugated portion and the second corrugated portion are the same or different.

[0024] Furthermore, it further includes:

[0025] A first connecting portion is used to connect the first corrugated portion and the second corrugated portion.

[0026] A second connecting portion is used to connect the first corrugated portion, the third corrugated portion and the fracture portion;

[0027] A third connecting portion is respectively connected to the first corrugated portion and the fracture portion;

[0028] A fourth connecting portion is used to connect the fracture portion and the fourth corrugated portion.

[0029] Furthermore, the first connecting portion, the second connecting portion, the third connecting portion and the fourth connecting portion are flush in height.

[0030] Further, it further includes:

[0031] The distance from the peak of the first corrugated portion to the second connecting portion is greater than the distance from the peak of the second corrugated portion to the second connecting portion.

[0032] Further, each of the first corrugated portion / the second corrugated portion / the third corrugated portion includes at least one peak or valley.

[0033] Further, a plurality of guiding convex portions adapted to be connected to the second corrugated portion are provided around the heat pipe insertion portion, which are used to guide the air flow to the tail of the first flow channel.

[0034] Further, the third flow channel is formed by enclosing the third connecting portion, the first connecting portion, the second connecting portion, the third corrugated portion, the fourth connecting portion, and the third connecting portion that are sequentially connected on two adjacent fins along the flowing direction of the heat exchange medium.

[0035] Compared with the prior art, the advantages and positive effects of the present invention are:

[0036] The air conditioner proposed by the present invention includes a fin structure that can adjust the cooling time and the thickness of the flow boundary layer of the wet air flowing through the surface of the heat exchanger, so that the frost transfers from the windward side to the leeward side, so that the frost is evenly generated on the surface of the heat exchanger, reducing the frosting rate on the windward side, delaying the time of air duct blockage, and prolonging the heat exchange time of the heat exchanger.

[0037] Moreover, the fins in this embodiment are provided with a corrugated portion and a fracture portion structure, combining two methods of boundary layer cutting and boundary layer perturbation, and enhancing the design of the heat transfer coefficient of the heat exchanger, so that the heat transfer coefficient of the heat exchanger is improved and the heat exchange effect is good.

[0038] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become clearer. Brief Description of the Drawings

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0040] Figure 1 It is a schematic structural diagram of the air conditioner of the present invention;

[0041] Figure 2 It is a schematic structural diagram of the heat exchanger of the air conditioner of the present invention;

[0042] Figure 3Structural schematic of the fin of the air conditioner of the present invention Figure 1 ;

[0043] Figure 4 Structural schematic of the fin of the air conditioner of the present invention Figure 2 ;

[0044] Figure 5 Structural schematic of the fin of the air conditioner of the present invention Figure 3 ;

[0045] Figure 6 Structural schematic of the fin of the air conditioner of the present invention Figure 4 ;

[0046] Figure 7 is Figure 6 A-A cross-sectional view of;

[0047] Figure 8 is Figure 6 B-B cross-sectional view of;

[0048] Figure 9 is Figure 6 C-C cross-sectional view of. Detailed implementation manners

[0049] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0050] It should be noted that in the description of the present invention, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] An embodiment of an air conditioner is proposed by the present invention. Referring to Figures 1 - 9 as shown, it includes: a refrigeration cycle system, which is formed by sequentially connecting a compressor, a condenser and a heat exchanger 100 through refrigeration pipelines.

[0052] The heat exchanger 100 is used for heat exchange with the outside during refrigeration and heating. The heat exchanger 100 includes multiple groups of fins 200 and heat pipes inserted in the multiple groups of fins 200. Preferably, in this embodiment, the fins 200 are matched with heat pipes of small diameters, and the diameter of the heat pipes is 7-9 mm. The multiple groups of fins 200 are arranged in parallel in sequence, and the distance between adjacent fins 200 is equal.

[0053] There are successively formed on the fin 200 along the flow direction of the heat exchange medium: a first flow region 300, a second flow region 400, and a third flow region 500. Since the three flow regions are arranged in sequence along the flow direction of the heat exchange medium, the first flow region 300 is close to the windward side of the fin 200, the second flow region 400 is located at the middle position correspondingly, and the third flow region 500 is arranged close to the leeward side of the fin 200.

[0054] When specifically arranged, a first corrugated portion 210 and a second corrugated portion 220 are alternately arranged at intervals in the first flow region 300, that is, the first corrugated portion 210 and the second corrugated portion 220 are alternately arranged on the windward side of the fin 200, and the first corrugated portion 210 and the second corrugated portion 220 are arranged at a certain interval. When arranging, the lengths of the first corrugated portion 210 and the second corrugated portion 220 can be correspondingly set to be the same or can be correspondingly set to be different, that is, the first corrugated portion 210 and the second corrugated portion 220 are arranged in an alternating pattern of long and short. The first corrugated portion 210 and the second corrugated portion 220 can be set to include at least one wave crest or one wave trough when arranging, or can include more than 2 wave crests or more than 2 wave troughs, presenting a corrugated sheet with multiple segments of fluctuations, and no specific limitation is made here.

[0055] A third corrugated portion 230 is provided in the second flow region 400. The heat pipe is located in the second flow region 400, and the heat pipe insertion portion 240 and the third corrugated portion 230 are alternately arranged. Specifically, the third corrugated portion 230 can be alternately connected and arranged with the heat pipe insertion portion 240 in the second region correspondingly.

[0056] A fourth corrugated portion 250 and a fracture portion 260 are alternately arranged at intervals in the third flow region 500, that is, the fourth corrugated portion 250 and the fracture portion 260 are alternately arranged at the leeward side of the fin 200, and a certain interval is arranged between the fourth corrugated portion 250 and the fracture portion 260. The fracture portion 260 corresponds to the positions of the first corrugated portion 210 and the third corrugated portion 230.

[0057] Specifically, there are multiple groups of fins 200 in this embodiment. An integral air duct 600 is formed between two adjacent fins 200. The integral air duct 600 is divided into a plurality of first flow channels 620, second flow channels 610, and third flow channels 630 arranged in parallel along the flow direction of the heat exchange medium. The first flow channels 620, third flow channels 630, and second flow channels are connected and communicated in sequence. The entire air duct 600 can be divided into an upper wind region part with a heat pipe and a lower wind region part located downstream of the heat pipe;

[0058] Specifically, a second flow channel 610 is formed between the first corrugated portion 210, the third corrugated portion 230, and the fracture portion 260 of adjacent fins 200 and is arranged along the flow direction of the heat exchange medium. The second flow channel 610 can reduce the frosting amount on the windward fins 200 and cause frost to condense at the fracture portion 260.

[0059] A first flow channel 620 through which a heat pipe can flow is formed between the second corrugated portion 220, the third corrugated portion 230, and the fourth corrugated portion 250 of adjacent fins 200 and is arranged along the flow direction of the heat exchange medium. When the heat exchange medium air flow passes through the first flow channel 620, it will inevitably be blocked by the heat pipe, causing the air duct 600 to be blocked. Therefore, in this embodiment, whether frosting occurs on the second corrugated portion 220, the third corrugated portion 230, and the fourth corrugated portion 250 in the first flow channel 620 has little impact on the heat exchange of the air duct 600 of the entire heat exchanger 100, while the frosting rate of the second flow channel 610 located between adjacent heat pipes has a greater impact on the air flow of the entire air duct 600.

[0060] A third flow channel 630 is formed along the flow direction of the heat exchange medium and is located between the first flow channel 620 and the second flow channel 610. The third flow channel 630 can isolate the frost condensed in the second flow channel 610 to prevent it from spreading to the second corrugated portion 220 and the fourth corrugated portion 250 of the fin 200.

[0061] The second flow channel 610 is formed by the first corrugated portion 210, the third corrugated portion 230, and the fracture portion 260 that are sequentially connected on two adjacent fins 200. The first corrugated portion 210 is arranged near the windward side of the fin 200, the fracture portion 260 is arranged near the leeward side of the fin 200, and the third corrugated portion 230 is located in the middle area between the first corrugated portion 210 and the second corrugated portion 220 and between two heat pipes. An upper wind area of the second flow channel 610 is formed between the two fins 200 corresponding to the first corrugated portion 210, and a downstream area of the second flow channel 610 is formed between the two fins 200 corresponding to the fracture portion 260. Specifically, parts I and II of the upper wind area of the second flow channel 610 are formed between the first corrugated portions 210 of two adjacent fins 200, and parts III-VI of the upper wind area of the second flow channel 610 are formed between the third corrugated portions 230 of two adjacent fins 200. When air flows in the air duct 600 of the entire heat exchanger 100, it will sequentially pass through parts I-VI of the upper wind area of the second flow channel 610 and then leave the heat exchanger 100 through the fracture portion 260.

[0062] Among them, when the air flow passes through the upper wind area corresponding to the second flow channel 610, due to the combined action of the first corrugated part 210 and the third corrugated part 230 in the upper wind area that constitutes the second flow channel 610, the fluid bends repeatedly in the flow direction, causing the thickness of the flow boundary layer to tend to increase. The increase in the boundary layer thickness results in an increase in thermal resistance, thus effectively preventing frosting from occurring first in the upper wind area of the second flow channel 610.

[0063] Since parts I and II of the upper wind area are close to the windward side of the fin 200, the corresponding air flow velocity is relatively high. At the same time, due to the blocking force of the heat pipe, the area of the entire air duct 600 formed between the two fins 200 becomes smaller, causing the air flow velocity at the middle position of the entire upper wind area to increase. As a result, the flow velocity of parts III-VI at the middle position of the upper wind area corresponding to the second flow channel 610 increases. Therefore, when flowing from parts I-VI in the upper wind area of the second flow channel 610 into the downstream area, the corresponding flow velocity continuously increases. Since the air flow flows from the upper wind area to the downstream area, and the amount of water vapor that can be transported downstream increases after the flow velocity continuously increases, it promotes the transfer of the frosting position to the downstream area, promotes the frost to condense as much as possible on the fission part located in the downstream area, reduces the frosting amount on the first corrugated part 210 close to the windward side of the fin 200, causes the frosting position to shift, and makes it condense as much as possible at the fracture part 260 located in the downstream area. Furthermore, it enables the frost to condense evenly on the first corrugated part 210, the third corrugated part 230, and the fracture part 260, avoiding the situation where the air duct 600 is blocked due to too thick frosting on the first corrugated part 210 or the third corrugated part 230 at the front section of the heat exchange medium flow, extending the blocking time of the air duct 600, and improving the heat exchange effect.

[0064] At the same time, due to the large flow velocity corresponding to the upper wind area and the short residence time when the air flow passes through it, the frosting rate of the first corrugated part 210 and the third corrugated part 230 corresponding to the upper wind area will also be reduced, preventing the frost from forming on the windward side and avoiding the problem that the entire flow channel is blocked due to frosting and heat exchange cannot be carried out.

[0065] When the air enters the fracture part 260 from the upper wind area, the flow boundary layer is completely cut off, the convective heat transfer resistance between the air flow and the fin 200 decreases sharply, and the mass transfer rate of water vapor representing frosting increases sharply. At this time, the mass transfer rate in the upper wind area is much smaller and the surface temperature of the fin 200 is higher. Therefore, the fracture part 260 is more likely to frost first.

[0066] For the low-temperature and high-humidity working conditions with relatively fast frosting, in this embodiment, the structure of the air duct 600 of the heat exchanger 100 is improved. By changing the velocity vector of part of the air flow in the upper wind area of the second flow channel 610, the cooling time of the wet air flowing through the surface of the heat exchanger 100 is adjusted to increase the disturbance of the boundary layer to enhance heat exchange, thereby enhancing the heat exchange effect.

[0067] Heat transfer is enhanced by partially cutting off the flow boundary layer at the break 260 to reduce the boundary layer thickness and heat transfer resistance. The entire air duct 600 combines the boundary layer cutting and boundary layer disturbance methods to enhance the heat transfer coefficient of the heat exchanger 100 and improve the heat transfer coefficient.

[0068] Preferably, a heat pipe inserting portion 240 for inserting a heat pipe is further provided on the fin 200. The heat pipe inserting portion 240 in this embodiment is a flanged hole formed on the fin 200 for assembling the heat pipe.

[0069] In this embodiment, in order to form the fracture part 260, a fracture matrix 261 is correspondingly arranged. There are two fracture matrices 261, which are arranged opposite to each other, and the fracture part 260 is formed between the two fracture matrices 261. As a setting mode of the fracture matrix 261 in this embodiment, one of the fracture matrices 261 is arranged to be tilted downward relative to the fin 200, and the other fracture matrix 261 is arranged to be tilted upward relative to the fin 200. Preferably, the two fracture matrices 261 are arranged in parallel, and the fracture matrix 261 and the fin 200 have an angle, and the angle is 25-30 degrees. The fracture matrices 261 that are relatively clearly arranged up and down form an opening structure similar to a venetian blind, so that the airflow is broken when it flows through here and the effect of reducing thermal resistance is generated. Of course, the fracture part 260 in this embodiment can also be a flat opening or a slit structure to achieve the effect of airflow isolation, which is not specifically limited here.

[0070] Preferably, the spacing between the two fractured bases 261 in this embodiment is half the product of the distance between the two fins 200 and the cosine value of the angle between the fractured base 261 and the fin 200. Preferably, the spacing between adjacent fins 200 in this embodiment is between 1.3-1.9 mm, which is set as Fp. The inclination angle Φ between the fractured base 261 and the fin 200 is 25-30°. The spacing between the two fractured bases 261, i.e., the width of the fractured portion 260 is set as P, which satisfies P≈0.5*Fp*cosΦ, to ensure that the fractured portion 260 has the maximum spacing. A large spacing can make its heat exchange performance high. At the same time, a large spacing reduces the probability of the fractured portion 260 being blocked, making it frost and completely blocked for a longer period of time, so that the heat exchange time of the heat exchanger 100 becomes longer and it will not enter the defrosting mode too quickly.

[0071] In order to realize the connection of each corrugated part in this embodiment, this embodiment also includes:

[0072] The first connecting portion 710 is used to connect the first corrugated portion 210 and the second corrugated portion 220 , that is, the first corrugated portion 210 and the second corrugated portion 220 are arranged alternately and spaced apart, and adjacent first corrugated portions 210 and second corrugated portions 220 are connected through the first connecting portion 710 .

[0073] A second connecting portion 720 for connecting the first corrugated portion 210, the third corrugated portion 230 and the fracture portion 260, and a third connecting portion 730 respectively connected to the first corrugated portion 210 and the fracture portion 260;

[0074] That is, one side of the first corrugated portion 210 is connected to one side of the third corrugated portion 230 through the second connecting portion 720, the other side of the third corrugated portion 230 is connected to one side of the fracture portion 260 through the second connecting portion 720, the other side of the first corrugated portion 210 is connected to the third connecting portion 730, the third connecting portion 730 is close to the windward side of the fin 200, and the other side of the fracture portion 260 is connected to the third connecting portion 730.

[0075] A fourth connecting portion 740 for connecting the fracture portion 260 and the fourth corrugated portion 250. The fracture portion 260 and the fourth corrugated portion 250 are arranged alternately at intervals, and are connected through the fourth connecting portion 740 between any adjacent fracture portion 260 and fourth corrugated portion 250.

[0076] For the convenience of processing and forming the fin 200, the first connecting portion 710, the second connecting portion 720, the third connecting portion 730 and the fourth connecting portion 740 in this embodiment are flush in height.

[0077] When set, the distance from the peak / trough of the first corrugated portion 210 to the second connecting portion 720 is greater than the distance from the peak / trough of the second corrugated portion 220 to the second connecting portion 720, so as to reduce the flow resistance of air when flowing from the first corrugated portion 210 to the third corrugated portion 230, so that the air flow can quickly flow through the upper wind area of the second flow channel 610 and avoid frosting.

[0078] Further, a plurality of guiding convex portions 800 adapted to be connected to the second corrugated portion 220 are arranged around the heat pipe insertion portion 240, and are used for guiding the air flow to the tail of the first flow channel 620. Preferably, the guiding convex portions 800 in this embodiment are flanging convexes arranged circumferentially along the flanging hole, which can deflect the air to the downstream of the flanging hole, reduce the area of the wake area, and improve the efficiency of the fin 200.

[0079] The third connecting portion 730, the first connecting portion 710, the second connecting portion 720, the third corrugated portion 230, the fourth connecting portion 740 and the third connecting portion 730 are connected in sequence to form the third flow channel 630 between adjacent fins 200. Compared with the second flow channel 610 disposed adjacent thereto, the air flow at the third flow channel 630 is subject to much less resistance from the air duct 600 when flowing through the flow channel, has fewer flow direction reversals, and the air is cooled for a shorter time. At the same time, since multiple connecting portions are connected in sequence, a relatively large thermal resistance is formed, so that the frosting rate of the third connecting portion 730, the first connecting portion 710, the second connecting portion 720, the third corrugated portion 230 and the fourth connecting portion 740 located at the third flow channel 630 is reduced. Higher air volume combined with a lower frosting rate slows down the development rate of the frost layer at the fracture portion 260 towards the fourth corrugated portions 250 on both adjacent sides thereof, forming an isolation zone, thereby avoiding the problem of blockage of the air duct 600 caused by the diffusion of the frost layer at the fracture portion 260 to both sides.

[0080] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present invention.

Claims

1. An air conditioner, comprising: A heat exchanger for exchanging heat with the outside during refrigeration and heating, the heat exchanger including multiple groups of fins; The fins are provided with heat pipe insertion parts, and along the flow direction of the heat exchange medium, the following are successively formed on the fins: A first flow area, in which a first corrugated part and a second corrugated part are alternately arranged at intervals; A second flow area, in which a third corrugated part is provided, the heat pipe insertion part is located in the second flow area, and the heat pipe insertion part and the third corrugated part are alternately arranged; A third flow area, in which a fourth corrugated part and a fracture part are alternately arranged at intervals, and the fracture part is opposite to the first corrugated part and the third corrugated part in position; A second flow channel is formed between the first corrugated part, the third corrugated part and the fracture part of adjacent fins along the flow direction of the heat exchange medium, and the second flow channel can reduce the frosting amount of the fins on the windward side and make the frost condense at the fracture part.

2. The air conditioner according to claim 1, characterized in that A first flow channel flowing through the heat pipe insertion part is formed between the second corrugated part, the third corrugated part and the fourth corrugated part of adjacent fins along the flow direction of the heat exchange medium.

3. The air conditioner according to claim 2, characterized in that, It further includes: A third flow channel formed along the flow direction of the heat exchange medium and located between the first flow channel and the second flow channel, The third flow channel is used to isolate the frost condensed in the second flow channel to prevent it from spreading to the second corrugated part and the fourth corrugated part of the fins.

4. The air conditioner according to claim 1, characterized in that, It further includes: Two fracture bases are provided and are arranged oppositely, and the fracture part is formed between the two fracture bases.

5. The air conditioner according to claim 4, characterized in that, One of the fracture bases is arranged obliquely downward relative to the fins, and the other fracture base is arranged obliquely upward relative to the fins. The fracture base and the fins have an included angle, and the included angle is 25-30 degrees.

6. The air conditioner according to claim 4, characterized in that, The distance between the two fracture bases is half of the distance between two fins and the cosine value of the included angle between the fracture base and the fins.

7. The air conditioner according to claim 1, characterized in that The peak points of the first corrugated part and the second corrugated part are of the same or different heights, and the lengths of the first corrugated part and the second corrugated part are of the same or different lengths.

8. The air conditioner according to claim 3, characterized in that, It further includes: A first connecting part for connecting the first corrugated part and the second corrugated part; A second connecting part for connecting the first corrugated part, the third corrugated part and the fracture part; A third connecting part respectively connected to the first corrugated part and the fracture part; A fourth connecting part for connecting the fracture part and the fourth corrugated part.

9. The air conditioner according to claim 8, wherein, The first connecting part, the second connecting part, the third connecting part and the fourth connecting part are flush in height.

10. The air conditioner according to claim 8, wherein, It further includes: The distance from the peak / trough of the first corrugated part to the second connecting part is greater than the distance from the peak / trough of the second corrugated part to the second connecting part.

11. The air conditioner according to claim 1, characterized in that, The first corrugated part / second corrugated part / third corrugated part each includes at least one peak or trough.

12. The air conditioner according to claim 1, characterized in that, A plurality of guiding convex parts adapted to be connected to the second corrugated part are arranged around the heat pipe insertion part, and they are used to guide the air flow to the tail of the first flow channel.

13. The air conditioner according to claim 8, characterized in that, The third flow channel is formed by enclosing the third connecting portion, the first connecting portion, the second connecting portion, the third corrugated portion, the fourth connecting portion, and the third connecting portion that are sequentially connected on two adjacent fins along the flowing direction of the heat exchange medium.

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