CN218672404U - Machine in fin, heat exchanger and air conditioning - Google Patents

Abstract

The utility model discloses a machine in fin, heat exchanger and air conditioning, the fin includes first heat transfer section and second heat transfer section, the length extending direction of first heat transfer section is different with the length extending direction of second heat transfer section, the junction of first heat transfer section and second heat transfer section has a plurality of groups of cracking, lie in the air inlet side of fin in a plurality of groups of cracking for outside group, at least one outside group forms first settlement group, first settlement group includes a plurality of first structures of cracking of arranging through the direction along the air current, in the first arbitrary adjacent two structures of cracking of setting for the group, the first length of cracking that cracks that lies in the low reaches is not less than the first length of cracking that lies in the upper reaches of structure. According to the utility model discloses fin of heat exchanger makes the first structure of slotting's of junction quantity still less or the first length increase of slotting of structure to improve the windage of junction, increase air flow improves the heat transfer effect.

Description

Machine in fin, heat exchanger and air conditioning

Technical Field

The utility model belongs to the technical field of the air conditioner technique and specifically relates to a machine in fin, heat exchanger and air conditioning.

Background

In the related art, a heat exchange assembly of an indoor unit of an air conditioner is arranged around an air supply assembly, the air supply assembly generates negative pressure, and airflow flows through the heat exchange assembly, exchanges heat with the heat exchange assembly and then is discharged to an indoor space through the air supply assembly.

Wherein, a plurality of heat exchangers of heat transfer assembly need encircle the air supply subassembly setting to the air current that makes by air supply subassembly week side entering all can be by the heat transfer, the fin of a plurality of heat exchangers encircles the air supply subassembly setting promptly, and at least part fin is the arc or buckles the setting, and the arc or buckle regional local windage that sets up is great, and the amount of wind is little, and heat exchange efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a fin, the windage of fin is littleer, and the amount of wind is big, and heat exchange efficiency is high.

The utility model discloses a heat exchanger of adopting above-mentioned fin is further proposed.

The utility model also provides an air conditioning indoor unit of adopting above-mentioned heat exchanger.

According to the utility model discloses the fin of heat exchanger of first aspect embodiment, the fin includes first heat transfer section and second heat transfer section, the length extending direction of first heat transfer section with the length extending direction of second heat transfer section is different, first heat transfer section with the junction of second heat transfer section has a plurality of groups that crack, a plurality of crack are organized the position in lieing in the air inlet side of fin is outside group, at least one outside group forms into first settlement group, first settlement group includes a plurality of first structure of cracking that follow the air current through the direction range, first settlement group arbitrary adjacent two in the first structure of cracking, lie in the low reaches the length of cracking of first structure of cracking is not less than lie in the upper reaches the length of cracking of first structure of cracking.

According to the utility model discloses fin of heat exchanger is through setting up first settlement group to make first settlement in two adjacent first structures of slotting in the group, the length of slotting that is located the first structure of slotting of the first structure of slotting in low reaches more than or equal to is located the first structure of slotting in upper reaches, in order to in the air current direction, make the first structure of slotting of junction's quantity still less or the first length of slotting of structure increase of slotting, in order to improve the windage of junction, increase air flow, improve the heat transfer effect.

According to some embodiments of the invention, at least one of the first set of settings comprises two of the first slotted structures.

Further, in the first set group including two of the first slit structures, the slit length of the first slit structure located downstream is larger than the slit length of the first slit structure located upstream.

In some embodiments, at least one of the first set groups includes three of the first slotted structures, and of the three first slotted structures, the first slotted structure located upstream has a slotted length equal to that of the first slotted structure located midstream, and each of the three first slotted structures is smaller than that of the first slotted structure located downstream.

According to some embodiments of the invention, at least two adjacent said outer groups arranged along the length extension direction of said fins are all formed as said first set group.

In some embodiments, at least one of the first slotted structures includes a bridge piece and a through hole penetrating the fin, the bridge piece is located on one side of the thickness of the fin, and two ends of the length of the bridge piece are respectively connected with two ends of the length of the through hole.

According to some embodiments of the utility model, it is a plurality of it is located to open seam in the group outside being close to of group the air-out side of fin be inside group, at least one the group is set for to the second in the inboard group formation, the second is set for the group and is included one along the air current through the structure that opens seam of a plurality of seconds of direction arrangement.

Further, a slitting length of the second slitting structure is not less than a slitting length of the first slitting structure; and/or the number of second slotted structures in the second set of groups is no more than the number of first slotted structures in the first set of groups.

In some embodiments, a plurality of third setting groups are arranged on the first heat exchange section, and each third setting group comprises a plurality of third open-seam structures which are arranged along the air flow passing direction; and/or a plurality of fourth setting groups are arranged on the second heat exchange section, and each fourth setting group comprises a plurality of fourth slit structures which are arranged along the passing direction of the airflow.

Furthermore, the fin is provided with a plurality of tube holes, the tube holes are sequentially arranged along the length direction of the fin to form a hole row, the hole rows are arranged at intervals along the width direction of the fin, and a slot structure is arranged between any two adjacent tube holes in each hole row.

According to the utility model discloses heat exchanger of second aspect embodiment, the heat exchanger is the fin of tube fin heat exchanger and including the heat exchanger in the above-mentioned embodiment.

According to the utility model discloses machine in air conditioning of third aspect embodiment includes: the cross-flow wind wheel is arranged at an air duct inlet of the air duct piece; the heat exchange assembly is arranged at the upstream of the air supply assembly and comprises the heat exchanger.

Further, the air-conditioning indoor unit is a wall-mounted air-conditioning indoor unit and comprises a shell, an air inlet is formed in the top of the shell, the heat exchange assembly is lower than the air inlet and comprises a rear heat exchanger and a front heat exchanger arranged in front of the rear heat exchanger, the upper end of the rear heat exchanger is connected with the upper end of the front heat exchanger, the heat exchanger is composed of the front heat exchanger and a first heat exchange section which is higher than a second heat exchange section, the first heat exchange section extends forwards in an inclined mode from top to bottom, and the second heat exchange section extends backwards in an inclined mode from top to bottom.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic view of an indoor unit of an air conditioner according to the present invention;

figure 2 is a schematic view of a fin according to a first embodiment of the present invention;

figure 3 is a schematic view of a fin according to a second embodiment of the present invention;

fig. 4 is a schematic diagram of a slotted structure that may be employed in accordance with an embodiment of the present invention.

Reference numerals:

an indoor unit of an air conditioner 1000 is provided,

the heat exchange assembly 100, the blowing assembly 200, the housing 300,

the heat exchanger assembly of the front heat exchanger 110, the rear heat exchanger 120,

the fin 10, the first heat exchange section 11, the second heat exchange section 12,

the first set of settings 20, the first slotted structure 21,

a second set 30, a second slotted structure 31,

a third set 40, a third aperture formation 41,

a fourth setting group 50, a fourth slot structure 51.

A bridge sheet a and a perforation b.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

Next, with reference to the drawings, a fin 10, a heat exchanger, and an air conditioning indoor unit 1000 according to an embodiment of the present invention will be described.

As shown in fig. 2 and 3, according to the fin 10 of the heat exchanger of the embodiment of the first aspect of the present invention, the fin 10 includes a first heat exchanging section 11 and a second heat exchanging section 12, a length extending direction of the first heat exchanging section 11 is different from a length extending direction of the second heat exchanging section 12, and the second heat exchanging section 12 is bent with respect to the first heat exchanging section 11, so that the fin 10 can be disposed around, and a plurality of fins 10 are stacked to form the heat exchanger.

The joint of the first heat exchange section 11 and the second heat exchange section 12 is provided with a plurality of slit groups, an outer side group is positioned on the air inlet side of the fin 10 in the plurality of slit groups, at least one outer side group forms a first set group 20, the first set group 20 comprises a plurality of first slit structures 21 arranged along the air flow passing direction, and in any two adjacent first slit structures 21 of the first set group 20, the slit length of the first slit structure 21 positioned at the downstream is not less than the slit length of the first slit structure 21 positioned at the upstream.

Particularly, be the acute angle between first heat transfer section 11 and the second heat transfer section 12, the one end of first heat transfer section 11 links to each other with the one end of second heat transfer end, and the region that links to each other (junction promptly) forms into the arc, can set up the group of cracking on the arc region to through the heat transfer area of the group increase junction of cracking, improve the heat transfer effect.

Furthermore, the air flow flows from one side of the heat exchanger to the other side of the heat exchanger, the corresponding fin 10 may be provided with a plurality of slot groups corresponding to the air inlet side, the slot groups are defined as outer side groups, each outer side group may include a plurality of slot structures, the slot structures of the outer side groups may be the same or different (for example, a bridge slot structure, a louver slot structure, or the like may be selected), at least one of the outer side groups is a first setting group 20, the first setting group 20 correspondingly adopts a first slot structure 21, and the first slot structure 21 is not defined as the same or different structure of the other outer side groups of the first setting group 20.

It will be appreciated that the first set of settings 20 may include a plurality of first slotted structures 21 arranged in the direction of airflow therethrough, such as: two, three or four first slit structures 21 are arranged in sequence in the direction from the air inlet side to the air outlet side, and among the plurality of first slit structures 21, the first slit structure 21 relatively adjacent to the air inlet side is the upstream first slit structure 21, and the first slit structure 21 relatively far away from the air inlet side is the downstream first slit structure 21, so that the slit length of the downstream first slit structure 21 is greater than or equal to the slit length of the upstream first slit structure 21, and in the air flow direction (i.e. from the air inlet side to the air outlet side), the slit length is increased correspondingly with the decrease of the air flow velocity, thereby reducing the wind resistance and increasing the air flow rate to improve the heat exchange efficiency, and the direction indicated by the arrows in fig. 2 and 3 corresponds to the air flow direction.

For example, in any two adjacent first slit structures 21, the slit length of the downstream first slit structure 21 is not less than the slit length of the upstream first slit structure 21, which means that the first set of settings 20 may include two first slit structures 21, and the slit length of the upstream first slit structure 21 is equal to or less than the slit length of the downstream first slit structure 21; or the first set 20 may comprise three first slit structures 21, the upstream two first slit structures 21 having equal slit lengths, and the downstream one first slit structure 21 having a slit length greater than the upstream two first slit structures 21; or the first set 20 may include three first slit structures 21, the downstream two first slit structures 21 having the same slit length, and the upstream one of the first slit structures 21 having a slit length smaller than the downstream two first slit structures 21; or the first setting group 20 may include three first slit structures 21, and the slit lengths of the three first slit structures 21 are sequentially increased in the air flow direction.

According to the utility model discloses fin 10 of heat exchanger, through setting up first settlement group 20, and make in first settlement group 20 two adjacent first structure 21 that cracks, the length that cracks of the first structure 21 that cracks that is located the low reaches cracks length more than or equal to the first structure 21 that cracks that is located the upper reaches, in order on the air current direction, make the first structure 21 that cracks of junction's quantity still less or the first structure 21 that cracks length increase that cracks, in order to improve the windage of junction, increase the air flow, improve the heat transfer effect.

As shown in fig. 2, according to some embodiments of the present invention, at least one first setting group 20 includes two first slit structures 21.

It should be noted that the slit group, the outer group, and the first setting group 20 all refer to a plurality of slit structures arranged in a group, and the number of the first setting group 20 may be one or more, and may be specifically arranged according to the area of the joint.

Furthermore, in the first embodiment, at least one of the one or more first setting groups 20 has two first slotted structures 21, so that the number of the slotted structures is smaller by providing two first slotted structures 21, and the wind resistance at the joint can be effectively improved, thereby improving the heat exchange efficiency and the heat exchange effect.

As shown in fig. 2, in some embodiments, in the first set 20 including two first slit structures 21, the slit length of the first slit structure 21 located downstream is greater than the slit length of the first slit structure 21 located upstream.

In other words, the plurality of first setting groups 20 may include: a first set 20 of two first slotted structures 21 and a first set 20 of more first slotted structures 21, whereas the slot length in the gas flow direction of the two first slotted structures 21 comprised is smaller than the slot length of the downstream first slotted structure 21.

Like this, can be through reducing the quantity of first structure 21 that cracks to under the prerequisite of improving the windage, further in the gas flow direction, make the first structure 21 that cracks of low reaches's the length of cracking bigger, also can increase the gas flow, thereby improve heat exchange efficiency and heat transfer effect.

Table 1: heat exchange efficiency comparison table

The reference is shown the table, the utility model discloses set up two first structures 21 that open seam to the first length of opening seam that opens seam structure 21 that makes the upper reaches is less than the first length of opening seam structure 21 that opens seam in low reaches, can effectively improve heat exchange efficiency, and along with the increase of the amount of wind, heat exchange efficiency's promotion is more obvious.

As shown in fig. 3, in some embodiments, at least one first setting group 20 includes three first slit structures 21, and among the three first slit structures 21, the slit length of the first slit structure 21 located upstream and the slit length of the first slit structure 21 located midstream are equal and are both smaller than the slit length of the first slit structure 21 located downstream.

The slotting group, the outer group and the first setting group 20 are all a plurality of slotting structures arranged in groups, and the number of the first setting group 20 can be one or more, and the slotting structures are specifically arranged according to the area of the connecting part.

In the second embodiment, at least one of the one or more first setting groups 20 has three first slit structures 21, and of the three first slit structures 21, the lengths of the upstream and midstream two first slit structures 21 may be equal, and the slit length of the downstream first slit structure 21 is the largest, whereby the slit length of the downstream first slit structure 21 is larger in the air flow direction, and the air flow amount may be increased, thereby improving the heat exchange efficiency and the heat exchange effect.

As shown in fig. 2, according to some embodiments of the present invention, at least two adjacent outside groups arranged along the length extension direction of the fin 10 are each formed as a first set group 20.

That is to say, in the structure is a plurality of outside groups that arrange on the curved junction, at least two adjacent outside groups form and set for group 20 for first, can effectively improve the windage of junction, improve the amount of wind of junction, make the air current more even, and heat transfer effect and heat exchange efficiency are all higher.

As shown in fig. 4, in some embodiments, the at least one first slit structure 21 includes a bridge piece a and a through hole b penetrating the fin 10, the bridge piece a being located on the thickness side of the fin 10 and having both ends of the length connected to both ends of the length of the through hole b, respectively.

Specifically, each fin 10 is provided with a through hole b, and the bridge piece a includes: the bridge body and be located the connecting plate body at bridge body length direction both ends, the connecting plate body links to each other with perforation b to through a plurality of faces of the pore wall of perforation b, bridge body, connecting plate body, effectively improve the heat transfer area of junction, in order to improve this regional heat exchange efficiency and heat transfer effect.

As shown in fig. 2 and 3, according to some embodiments of the present invention, the inner group is located on the air outlet side of the outer group close to the fins 10 in the plurality of slotted groups, at least one inner group is formed as a second set group 30, and the second set group 30 includes a plurality of second slotted structures 31 arranged along the air flow passing direction.

Therefore, the outer side group and the inner side group are arranged at the joint, so that the heat exchange area of the joint can be further increased, and the heat exchange area and the heat exchange effect are improved.

It should be noted that there are a plurality of inner groups, at least one of the inner groups of the plurality of groups is formed as the second set 30, and the slit structures of the other inner groups of the slit structure domain of the second set 30 are the same or different.

Further, the slit length of the second slit structure 31 is not smaller than the slit length of the first slit structure 21; and/or the number of second slotted structures 31 in the second set 30 is no more than the number of first slotted structures 21 in the first set 20.

Specifically, the length of the second slit structure 31 is greater than or equal to the length of the first slit structure 21, so that the air inflow is increased through the second slit structure 31 having a larger slit length in the gas flowing direction, the heat exchange effect and the airflow uniformity are improved, or the number of the second slit structures 31 is equal to or less than the number of the first slit structures 21 in the first setting group 20, the wind resistance at the joint can be reduced, the air inflow is increased, and the heat exchange effect and the airflow uniformity are improved.

Illustratively, in some embodiments, the length of the slits of the second slit structure 31 is not less than the length of the slits of the first slit structure 21; in other embodiments, the number of second slotted structures 31 in second set 30 is no more than the number of first slotted structures 21 in first set 20, in preferred embodiments, the length of the slots of second slotted structures 31 is no less than the length of the slots of first slotted structures 21; and the number of second slotted structures 31 in the second set 30 is no more than the number of first slotted structures 21 in the first set 20.

As shown in fig. 2 and 3, further, a plurality of third setting groups 40 are disposed on the first heat exchange section 11, and the third setting groups 40 include a plurality of third slot structures 41 arranged along the airflow passing direction; and/or a plurality of fourth setting groups 50 are arranged on the second heat exchange section 12, and the fourth setting groups 50 comprise a plurality of fourth slit structures 51 which are arranged along the air flow passing direction.

Therefore, the third setting group 40 is arranged on the first heat exchange section 11, and the fourth setting group 50 is arranged on the second heat exchange section 12, so that the heat exchange areas of the first heat exchange section 11 and the second heat exchange section 12 are increased, and the overall heat exchange efficiency and the heat exchange effect of the fin 10 are improved.

Illustratively, in some embodiments, a plurality of third setter sets 40 are provided on the first heat exchange stage 11; in other embodiments, a plurality of fourth configuration groups 50 are provided on the second heat exchange section 12; in the preferred embodiment, the first heat exchange stage 11 is provided with a third set of settings 40, while the second heat exchange stage 12 is provided with a fourth set of settings 50.

As shown in fig. 1, the fin 10 further has a plurality of tube holes, the plurality of tube holes are sequentially arranged along the length direction of the fin 10 to form a hole row, the plurality of hole rows are arranged at intervals along the width direction of the fin 10, and a slot structure is arranged between any two adjacent tube holes in each hole row.

Therefore, by providing more slotted structures outside the first setting group 20, the second setting group 30, the third setting group 40, and the fourth setting group 50, the heat exchange area of the fin 10 can be further increased to improve the heat exchange effect and the heat exchange efficiency.

According to the heat exchanger of the second aspect of the present invention, the heat exchanger is a tube-fin heat exchanger and includes the fin 10 of the heat exchanger in the above-mentioned embodiment.

According to the utility model discloses the heat exchanger adopts above-mentioned fin 10, and the windage of heat exchanger is littleer, and heat exchange efficiency is higher, and the heat transfer effect is better.

As shown in fig. 1, an air conditioner indoor unit 1000 according to a third aspect of the present invention includes: the heat exchanger comprises an air supply assembly 200 and a heat exchange assembly 100, wherein the air supply assembly 200 comprises an air duct piece and a cross-flow wind wheel, and the cross-flow wind wheel is arranged at an air duct inlet of the air duct piece; the heat exchange assembly 100 is disposed upstream of the blowing assembly 200 and includes the heat exchanger described above.

The utility model discloses indoor set of air conditioner 1000 places at wall body corner or hangs and establishes on indoor wall, in the horizontal direction, the direction that is close to the wall is the back, the direction of keeping away from the wall is preceding, in vertical direction, the top direction of casing 300 is last, the bottom direction of casing 300 is down, the wind wheel constructs for the through-flow wind wheel, heat exchange assemblies 100 encircles the through-flow wind wheel setting, the through-flow wind wheel rotates and produces the negative pressure, the disturbance air current, and inhale the air current in casing 300, the air current flows through heat exchange assemblies 100, and after fully exchanging heat with heat exchange assemblies 100, discharge through the wind channel export, in order to carry out the heat transfer (for example: refrigerate or heat) to the interior space.

According to the utility model discloses machine 1000 in air conditioning adopts above-mentioned heat exchanger, and heat exchanger Bao Rao air supply subassembly 200's the regional windage of buckling is littleer, can improve heat exchange efficiency and heat transfer effect, can improve machine 1000's in the air conditioning efficiency.

The air-conditioning indoor unit 1000 is a wall-mounted air-conditioning indoor unit 1000 and comprises a casing 300, an air inlet is formed in the top of the casing 300, a heat exchange assembly 100 is arranged below the air inlet and comprises a rear heat exchanger 120 and a front heat exchanger 110 arranged in front of the rear heat exchanger 120, the upper end of the rear heat exchanger 120 is connected with the upper end of the front heat exchanger 110, the heat exchanger forms the front heat exchanger 110, a first heat exchange section 11 is higher than a second heat exchange section 12, the first heat exchange section 11 extends forwards in an inclined manner from top to bottom, and the second heat exchange section 12 extends backwards in an inclined manner from top to bottom so as to surround the air supply assembly 200, so that the heat exchange efficiency is improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. The fin of the heat exchanger is characterized by comprising a first heat exchange section and a second heat exchange section, the length extension direction of the first heat exchange section is different from that of the second heat exchange section, a plurality of slotting groups are arranged at the joint of the first heat exchange section and the second heat exchange section, an outer side group is arranged on the air inlet side of the fin in the slotting groups, at least one outer side group forms a first setting group, the first setting group comprises a plurality of first slotting structures arranged along the air flow passing direction, and the slotting length of the first slotting structures positioned on the downstream is not less than that of the first slotting structures positioned on the upstream in any two adjacent first slotting structures of the first setting group.

2. The fin for a heat exchanger of claim 1, wherein at least one of the first set groups includes two of the first slit structures.

3. The fin for a heat exchanger according to claim 2, wherein in the first set of two first slit structures, a slit length of the first slit structure located downstream is larger than a slit length of the first slit structure located upstream.

4. The fin for a heat exchanger according to claim 1, wherein at least one of the first set groups includes three of the first slit structures, and among the three first slit structures, a slit length of the first slit structure located upstream and a slit length of the first slit structure located midstream are equal and are each smaller than a slit length of the first slit structure located downstream.

5. The fin for a heat exchanger according to claim 1, wherein at least two adjacent outside groups arrayed in a direction in which a length of the fin extends are each formed as the first set group.

6. The fin for a heat exchanger according to claim 1, wherein at least one of the first slit structures includes a bridge piece and a penetration hole penetrating the fin, the bridge piece being located on a thickness side of the fin and having a length both ends connected to a length both ends of the penetration hole, respectively.

7. The heat exchanger fin according to claim 1, wherein the plurality of slotted groups located on the air-outlet side of the outer group adjacent to the fin are inner groups, and at least one of the inner groups is formed as a second predetermined group including a plurality of second slotted structures arranged in the direction of air flow passing therethrough.

8. The fin for a heat exchanger according to claim 7, wherein a slit length of the second slit structure is not less than a slit length of the first slit structure; and/or the number of second slotted structures in the second set of groups is no more than the number of first slotted structures in the first set of groups.

9. The fin for a heat exchanger according to claim 1, wherein a plurality of third set groups are arranged on the first heat exchange section, and the third set groups include a plurality of third slit structures arranged along the direction of airflow; and/or a plurality of fourth setting groups are arranged on the second heat exchange section, and each fourth setting group comprises a plurality of fourth slit structures which are arranged along the passing direction of the airflow.

10. The fin for a heat exchanger according to any one of claims 1 to 9, wherein the fin has a plurality of tube holes thereon, the plurality of tube holes are sequentially arranged in a row along a length direction of the fin to form a plurality of hole rows, the plurality of hole rows are arranged at intervals along a width direction of the fin, and a slotted structure is provided between any two adjacent tube holes in each hole row.

11. A heat exchanger, characterized in that it is a tube and fin heat exchanger and comprises fins of a heat exchanger according to any one of claims 1-10.

12. An indoor unit of an air conditioner, comprising:

the cross flow wind wheel is arranged at an air duct inlet of the air duct piece; and

a heat exchange assembly disposed upstream of the air supply assembly and comprising the heat exchanger of claim 11.

13. The indoor unit of claim 12, wherein the indoor unit is a wall-mounted indoor unit and comprises a casing, an air inlet is formed in the top of the casing, the heat exchange assembly is disposed below the air inlet and comprises a rear heat exchanger and a front heat exchanger disposed in front of the rear heat exchanger, the upper end of the rear heat exchanger is connected to the upper end of the front heat exchanger, the heat exchanger forms the front heat exchanger, the first heat exchange section is higher than the second heat exchange section, the first heat exchange section extends obliquely forwards from top to bottom, and the second heat exchange section extends obliquely backwards from top to bottom.

Images