CN108036669B - Fin assembly, heat exchanger and air conditioner indoor unit - Google Patents

Abstract

The invention discloses a fin assembly, a heat exchanger and an air conditioner indoor unit, wherein the fin assembly comprises a front fin and a rear fin, a first wind shielding part, a second wind shielding part and a third wind shielding part, wherein the wind shielding areas of the first wind shielding part, the second wind shielding part and the third wind shielding part are sequentially reduced, and the first wind shielding part is arranged at the joint of the front fin and the rear fin; the front fin comprises a first gear wind-blocking assembly and a second gear wind-blocking assembly which are distributed along the air inlet side to the air outlet side of the front fin, and the first gear wind-blocking assembly and the second gear wind-blocking assembly respectively comprise at least one second wind-blocking part and a plurality of third wind-blocking parts which are sequentially distributed along the direction that the front fin is far away from the top of the fin assembly; and/or the rear fin comprises a third gear wind shielding assembly and a fourth gear wind shielding assembly which are distributed along the air inlet side to the air outlet side of the rear fin, and the third gear wind shielding assembly and the fourth gear wind shielding assembly respectively comprise at least one second wind shielding part and a plurality of third wind shielding parts which are sequentially arranged along the direction that the rear fin is far away from the top of the fin assembly. The invention improves the structure of the fin assembly, so that the wind speed distribution of the fin assembly is more uniform.

Description

Fin assembly, heat exchanger and air conditioner indoor unit

Technical Field

The invention relates to the technical field of air conditioners, in particular to a fin assembly, a heat exchanger and an air conditioner indoor unit.

Background

In the prior art, the heat exchanger of the air conditioner indoor unit comprises a plurality of fins which are arranged side by side and a plurality of heat exchange tubes which are arranged on the fins in a penetrating way, and the heat exchange tubes are communicated to form a pipeline for refrigerant circulation. When the air conditioner is refrigerating, the refrigerant in the heat exchange tube absorbs heat through evaporation so as to reduce the temperature of air flowing through the heat exchanger, thereby achieving the aim of refrigerating.

However, according to the structure of the indoor unit of the air conditioner, the wind speeds of all parts of the fin assembly of the heat exchanger are different, so that the heat exchange efficiency of all parts of the fin assembly is different, and the overall heat exchange efficiency of the fin assembly is affected.

Disclosure of Invention

The invention mainly aims to provide a fin assembly, which aims to enable the wind speed of each part of the fin assembly to be more uniform so as to improve the overall heat exchange efficiency of the fin assembly.

In order to achieve the above purpose, the present invention provides a fin assembly, which includes a front fin and a rear fin connected to the top of the fin assembly in an inverted V-shape structure, wherein a first wind shielding part, a second wind shielding part and a third wind shielding part with sequentially reduced wind shielding areas are provided on the fin assembly, and the first wind shielding part is provided at the connection part of the front fin and the rear fin;

The front fins comprise a first gear wind shielding component and a second gear wind shielding component which are distributed along the air inlet side to the air outlet side of the front fins, the first gear wind shielding component and the second gear wind shielding component comprise at least one second wind shielding part and a plurality of third wind shielding parts, and the second wind shielding parts and the third wind shielding parts in the first gear wind shielding component and the second gear wind shielding component are sequentially distributed along the direction that the front fins are far away from the tops of the fin components; and/or the number of the groups of groups,

The rear fin comprises a third gear wind shielding assembly and a fourth gear wind shielding assembly which are distributed along the air inlet side to the air outlet side of the rear fin, the third gear wind shielding assembly and the fourth gear wind shielding assembly comprise at least one second wind shielding part and a plurality of third wind shielding parts, and the second wind shielding parts and the third wind shielding parts in the third gear wind shielding assembly and the fourth gear wind shielding assembly are sequentially distributed along the direction that the rear fin is far away from the top of the fin assembly.

Preferably, the number of second wind shielding portions in the second gear wind shielding assembly is greater than or equal to the number of second wind shielding portions in the first gear wind shielding assembly;

the number of second wind shielding parts in the fourth gear wind shielding assembly is greater than or equal to the number of second wind shielding parts in the third gear wind shielding assembly.

Preferably, a plurality of rows of mounting holes distributed along the air inlet side to the air outlet side of the front fin are formed in the front fin, and the second wind shielding part and the third wind shielding part on the front fin are distributed between two adjacent mounting holes in each row of mounting holes on the front fin;

The rear fin is provided with a plurality of rows of mounting holes distributed along the air inlet side to the air outlet side of the rear fin, and the second wind shielding part and the third wind shielding part on the rear fin are distributed between two adjacent mounting holes in each row of mounting holes on the rear fin.

Preferably, the second wind shielding part includes a plurality of first louver structures and a plurality of second louver structures disposed opposite to each other;

The first louver structures and the second louver structures of each second wind shielding part on the front fin are arranged along the air inlet side to the air outlet side of the front fin;

The first louver structures and the second louver structures included in each second wind shielding portion on the rear fin are arranged from the air inlet side to the air outlet side of the rear fin.

Preferably, the total number of the first louver structure and the second louver structure included in each of the second wind shielding portions is n, and n is 6.ltoreq.n.ltoreq.8;

The opening angles of the first shutter structure and the second shutter structure are alpha, and alpha is more than or equal to 20 degrees and less than or equal to 30 degrees;

The opening heights of the first shutter structure and the second shutter structure are h, and h is more than or equal to 0.6mm and less than or equal to 0.8mm.

Preferably, each third wind shielding part comprises a plurality of bridge structures, and the plurality of bridge structures included in each third wind shielding part on the front fin are distributed along the air inlet side to the air outlet side of the front fin;

And a plurality of bridge piece structures included in each third wind shielding part on the rear fin are distributed along the air inlet side to the air outlet side of the rear fin.

Preferably, the total number of bridge structures included in the third wind shielding part is n1, and n1 is more than or equal to 3 and less than or equal to 5;

The height of the bridge piece structure included in the third wind shielding part is h1, and h1 is more than or equal to 0.5mm and less than or equal to 0.7mm.

Preferably, the first wind shielding part comprises a plurality of third louver structures distributed on the front fin and the rear fin, wherein windows of the third louver structures on the front fin face the air inlet side of the front fin, and windows of the third louver structures on the rear fin face the air inlet side of the rear fin.

Preferably, the number of the third louver structures included in the first wind shielding portion is n2, and n2 is 6-12;

The opening angle of the third shutter structure is alpha 1, and alpha 1 is more than or equal to 30 degrees and less than or equal to 60 degrees;

the opening height of the third shutter structure is h2, and h2 is more than or equal to 0.6mm and less than or equal to 0.8mm.

Preferably, the third wind shielding part in the first gear wind shielding assembly comprises a first sub wind shielding part and a second sub wind shielding part, the wind shielding area of the first sub wind shielding part is larger than the wind shielding area of the second sub wind shielding part, and the first sub wind shielding part and the second sub wind shielding part in the first gear wind shielding assembly are sequentially arranged along the direction that the front fin is far away from the top of the fin assembly; and/or the number of the groups of groups,

The third wind shielding part in the second gear wind shielding assembly comprises a third sub wind shielding part and a first sub wind shielding part, the wind shielding area of the third sub wind shielding part is larger than that of the first sub wind shielding part, and the third sub wind shielding part and the first sub wind shielding part in the second gear wind shielding assembly are sequentially arranged along the direction that the front fin is far away from the top of the fin assembly.

Preferably, the third wind shielding part in the fourth gear wind shielding assembly comprises a third sub wind shielding part and a first sub wind shielding part, the wind shielding area of the third sub wind shielding part is larger than that of the first sub wind shielding part, and the third sub wind shielding part and the first sub wind shielding part in the fourth gear wind shielding assembly are sequentially arranged along the direction that the rear fin is far away from the top of the fin assembly; or alternatively

The second wind shielding part in the third gear wind shielding assembly comprises a second sub wind shielding part, the second wind shielding part in the fourth gear wind shielding assembly comprises a first sub wind shielding part, and the wind shielding area of the first sub wind shielding part is larger than that of the second sub wind shielding part.

Preferably, the front fin further comprises a fifth gear wind shielding assembly, the fifth gear wind shielding assembly is located between the first gear wind shielding assembly and the second gear wind shielding assembly, and the fifth gear wind shielding assembly comprises a plurality of second wind shielding parts and a plurality of third wind shielding parts which are sequentially arranged along the direction that the front fin is far away from the top of the fin assembly; the number of second wind shielding parts in the fifth gear wind shielding assembly is larger than the number of second wind shielding parts in the first gear wind shielding assembly and smaller than the number of second wind shielding parts in the second gear wind shielding assembly; and/or the number of the groups of groups,

The rear fin further comprises a sixth gear wind shielding assembly, the sixth gear wind shielding assembly is located between the third gear wind shielding assembly and the fourth gear wind shielding assembly, and the sixth gear wind shielding assembly comprises a plurality of second wind shielding parts and a plurality of third wind shielding parts which are sequentially arranged along the direction that the rear fin is far away from the top of the fin assembly; the number of second wind shielding parts in the sixth gear wind shielding assembly is larger than the number of second wind shielding parts in the third gear wind shielding assembly and smaller than the number of second wind shielding parts in the fourth gear wind shielding assembly.

Preferably, the front fin is further provided with a plurality of heat insulation parts distributed along the length direction of the front fin, the plurality of heat insulation parts are positioned between the first gear wind-shielding component and the second gear wind-shielding component, and the heat insulation parts are strip-shaped slits or strip-shaped through holes extending along the length direction of the front fin; and/or the number of the groups of groups,

The rear fin is further provided with a plurality of heat insulation parts distributed along the length direction of the rear fin, the heat insulation parts are located between the third gear wind-shielding assembly and the fourth gear wind-shielding assembly, and the heat insulation parts are strip-shaped slits or strip-shaped through holes extending along the length direction of the rear fin.

Preferably, an end part of the front fin, which is far away from the top of the fin assembly, is provided with a corrugated structure so as to improve the strength of the front fin; and/or the number of the groups of groups,

The end part of one end of the rear fin, which is far away from the top of the fin assembly, is provided with a corrugated structure so as to improve the strength of the rear fin.

The invention also provides a heat exchanger, the fin assembly comprises a front fin and a rear fin which are connected to form an inverted V-shaped structure at the top of the fin assembly, a first wind shielding part, a second wind shielding part and a third wind shielding part with wind shielding areas reduced in sequence are arranged on the fin assembly, and the first wind shielding part is arranged at the connection part of the front fin and the rear fin;

The front fins comprise a first gear wind shielding component and a second gear wind shielding component which are distributed along the air inlet side to the air outlet side of the front fins, the first gear wind shielding component and the second gear wind shielding component comprise at least one second wind shielding part and a plurality of third wind shielding parts, and the second wind shielding parts and the third wind shielding parts in the first gear wind shielding component and the second gear wind shielding component are sequentially distributed along the direction that the front fins are far away from the tops of the fin components; and/or the number of the groups of groups,

The rear fin comprises a third gear wind shielding assembly and a fourth gear wind shielding assembly which are distributed along the air inlet side to the air outlet side of the rear fin, the third gear wind shielding assembly and the fourth gear wind shielding assembly comprise at least one second wind shielding part and a plurality of third wind shielding parts, and the second wind shielding parts and the third wind shielding parts in the third gear wind shielding assembly and the fourth gear wind shielding assembly are sequentially distributed along the direction that the rear fin is far away from the top of the fin assembly.

The invention also provides an air conditioner indoor unit which comprises the heat exchanger.

According to the invention, the first wind shielding part, the second wind shielding part and the third wind shielding part with the wind shielding areas reduced in sequence are arranged on the fin assembly, the first wind shielding part is arranged at the joint of the front fin and the rear fin, the second wind shielding part and the third wind shielding part on the front fin form a first gear wind shielding assembly and a second gear wind shielding assembly which are distributed along the air inlet side to the air outlet side of the front fin, and the first gear wind shielding assembly and the second gear wind shielding assembly respectively comprise at least one second wind shielding part and a plurality of third wind shielding parts which are distributed along the direction that the front fin is far away from the top of the fin assembly in sequence, so that the wind speed reduced by the first wind shielding part and the second wind shielding part which are close to the top of the fin assembly is larger, and the wind speed reduced by the third wind shielding part which is far away from the top of the fin assembly is smaller, and therefore, the wind speed distribution of each part of the front fin of the fin assembly is more uniform; and/or, make second keep out wind the part and third keep out wind the part and form the third and fourth and keep out wind the subassembly that keeps out wind the subassembly to the wind side distribution along the air inlet side of back fin, and make third and fourth keep out wind the subassembly and all include along the direction that the back fin kept away from the fin subassembly top arrange in proper order at least one second keep out wind the part and a plurality of third keep out wind the part, thereby make the wind speed that first keep out wind the part and the second keep out wind the part on the back fin near the fin subassembly top reduce bigger, the wind speed that the third keep out wind the part that keeps away from the fin subassembly top reduces is less, from this, make the wind speed distribution of each position of back fin of fin subassembly more even.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an embodiment of a fin assembly of the present invention;

FIG. 2 is a cross-sectional view of an embodiment of a first windshield portion of the present invention;

FIG. 3 is a cross-sectional view of an embodiment of a second windshield portion of the present invention;

FIG. 4 is a cross-sectional view of an embodiment of a third windshield portion of the present invention;

FIG. 5 is a cross-sectional view of one embodiment of a reinforcement of the present invention;

FIG. 6 is a schematic view of another embodiment of a fin assembly according to the present invention.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The invention provides a fin assembly.

Referring to fig. 1, the fin assembly includes front fins 21 and rear fins 22, and the front fins 21 and rear fins 22 are connected in an inverted V-shaped structure at the top of the heat exchanger to enclose a receiving slot for receiving the air supply structure 10. Wherein, one side of the fin assembly, which is away from the air supply structure 10, is an air inlet side of the fin assembly, namely an air inlet side of the front fin 21 and the rear fin 22; the side of the fin assembly facing the air supply structure 10 is the air outlet side of the fin assembly, i.e. the air outlet side of the front fins 21 and the rear fins 22. When the air supply structure 10 is operated, air flows in from the air inlet side of the fin assembly, exchanges heat with the fin assembly and the refrigerant circulation pipeline penetrating through the mounting holes 50 of the fin assembly, and flows out from the air outlet side of the fin assembly.

In an embodiment of the present invention, as shown in fig. 1, the fin assembly may be provided with the first wind shielding part 30, the plurality of second wind shielding parts 41, and the plurality of third wind shielding parts 42, and the wind shielding areas of the first wind shielding part 30, the second wind shielding parts 41, and the third wind shielding parts 42 may be gradually reduced.

The first wind shielding part 30 may be disposed at a connection position of the front fin 21 and the rear fin 22, a plurality of second wind shielding parts 41 and a plurality of third wind shielding parts 42 are disposed on the front fin 21, and the second wind shielding parts 41 and 41 on the front fin 21 form a first wind shielding assembly 40 and a second wind shielding assembly 40a which are arranged along an air inlet side to an air outlet side of the front fin 21, the first wind shielding assembly 40 and the second wind shielding assembly 40a each comprise at least one second wind shielding part 41 and a plurality of third wind shielding parts 42, and the second wind shielding parts 41 and the third wind shielding parts 42 in the first wind shielding assembly 40 and the second wind shielding assembly 40a are sequentially arranged along a direction that the front fin 21 is far away from the top of the fin assembly.

It can be understood that the fin assembly of this embodiment is mainly used for the heat exchanger of the indoor unit of the air conditioner, and is affected by the structure of the indoor unit of the air conditioner, and the wind speed from the top to the bottom of the fin assembly is gradually reduced. Therefore, by arranging the first wind shielding portion 30, the second wind shielding portion 41 and the third wind shielding portion 42 with gradually reduced wind shielding areas on the fin assembly and sequentially arranging the second wind shielding portion 41 and the third wind shielding portion 42 on the front fin 21 along the direction that the front fin 21 is away from the top of the fin assembly, the wind speed reduced by the first wind shielding portion 30 and the second wind shielding portion 41 on the front fin 21, which are close to the top of the fin assembly, can be larger, and the wind speed reduced by the third wind shielding portion 42, which is away from the top of the fin assembly, is smaller, so that the wind speed distribution of each part of the front fin 21 can be more uniform, namely, the wind speed distribution of the fin assembly is more uniform, so that the overall heat exchange efficiency of the fin assembly is improved.

Of course, as shown in fig. 1, the first wind shielding portion 30 may be disposed at a connection portion of the front fin 21 and the rear fin 22, and a plurality of second wind shielding portions 41 and a plurality of third wind shielding portions 42 may be disposed on the rear fin 22, so that the plurality of second wind shielding portions 41 and the plurality of second wind shielding portions 41 on the rear fin 22 form a third wind shielding assembly 40b and a fourth wind shielding assembly 40c arranged along an air inlet side to an air outlet side of the rear fin 22, each of the third wind shielding assembly 40b and the fourth wind shielding assembly 40c includes at least one second wind shielding portion 41 and a plurality of third wind shielding portions 42, and the second wind shielding portions 41 and the third wind shielding portions 42 of the third wind shielding assembly 40b and the fourth wind shielding assembly 40c are sequentially arranged along a direction in which the rear fin 22 is far from the top of the fin assembly. Therefore, the wind speed distribution of each part of the rear fin 22 can be more uniform, so that the overall heat exchange efficiency of the fin assembly is improved, and the detailed description is omitted.

In this embodiment, as shown in fig. 1, when the first gear wind shielding assembly 40 and the second gear wind shielding assembly 40a are disposed on the front fin 21, the number of the second wind shielding portions 41 in the second gear wind shielding assembly 40a may be greater than or equal to the number of the second wind shielding portions 41 in the first gear wind shielding assembly 40, so that the wind speed distribution on the front fin 21 is more uniform.

It will be appreciated that, since the wind speed on the wind inlet side of the front fins 21 is smaller than the wind speed on the wind outlet side, by increasing the number of the second wind shielding portions 41 in the second gear wind shielding assembly 40a, the wind speed on the wind outlet side of the front fins 21 can be reduced to make the wind speed distribution of the front fins 21 more uniform.

It should be noted that, one or more rows of wind shielding assemblies may be further disposed between the first wind shielding assembly 40 and the second wind shielding assembly 40a of the front fin 21, and the number of the second wind shielding portions 41 in the one or more rows of wind shielding assemblies between the first wind shielding assembly 40 and the second wind shielding assembly 40a may be greater than the number of the second wind shielding portions 41 in the first wind shielding assembly 40 and less than the number of the second wind shielding portions 41 in the second wind shielding assembly 40a, so as to further make the wind speed distribution on the front fin 21 uniform. For example: the front fins 21 may also include a fifth gear wind assembly (not shown) located between the first gear wind assembly 40 and the second gear wind assembly 40 a. The fifth gear wind shielding assembly comprises a plurality of second wind shielding parts 41 and a plurality of third wind shielding parts 42 which are sequentially arranged along the direction that the front fins 21 are far away from the top of the fin assembly, and the number of the second wind shielding parts 41 in the fifth gear wind shielding assembly is larger than that of the second wind shielding parts 41 in the first gear wind shielding assembly 40 and smaller than that of the second wind shielding parts 41 in the second gear wind shielding assembly 40 a.

Similarly, when the third wind shielding component 40b and the fourth wind shielding component 40c are disposed on the rear fin 22, the number of the second wind shielding portions 41 in the fourth wind shielding component 40c may be greater than or equal to the number of the second wind shielding portions 41 in the third wind shielding component 40b, which is not described herein.

One or more rows of wind shielding assemblies may be further disposed between the third wind shielding assembly 40b and the fourth wind shielding assembly 40c of the rear fin 22, and the number of the second wind shielding portions 41 in the one or more rows of wind shielding assemblies 40b and 40c is greater than the number of the second wind shielding portions 41 in the third wind shielding assembly 40b and less than the number of the second wind shielding portions 41 in the fourth wind shielding assembly 40c, so as to further make the wind speed distribution on the rear fin 22 uniform. For example: the rear fins 22 may be made to include a sixth gear wind assembly (not shown) located between the third gear wind assembly 40b and the fourth gear wind assembly 40 c. Wherein the sixth gear wind shielding assembly includes a plurality of second wind shielding parts 41 and a plurality of third wind shielding parts 42 sequentially arranged in a direction in which the rear fins 22 are away from the top of the fin assembly, and the number of the second wind shielding parts 41 in the sixth gear wind shielding assembly is greater than the number of the second wind shielding parts 41 in the third gear wind shielding assembly 40b and less than the number of the second wind shielding parts 41 in the fourth gear wind shielding assembly 40 c.

As shown in fig. 1, a plurality of rows of mounting holes 50 are disposed on the front fin 21 and distributed from the air inlet side to the air outlet side of the front fin 21, in this embodiment, when the second wind shielding portion 41 and the third wind shielding portion 42 are disposed on the front fin 21, the second wind shielding portion 41 and the third wind shielding portion 42 on the front fin 21 can be distributed between two adjacent mounting holes 50 in each row of mounting holes 50 on the front fin 21, so that the second wind shielding portion 41 and the third wind shielding portion 42 on the front fin 21 have better wind shielding effect.

Similarly, as shown in fig. 1, a plurality of rows of mounting holes 50 are disposed on the rear fin 22 from the air inlet side to the air outlet side of the rear fin 22, and when the second wind shielding portion 41 and the third wind shielding portion 42 are disposed on the rear fin 22, the second wind shielding portion 41 and the third wind shielding portion 42 on the rear fin 22 may be disposed between two adjacent mounting holes 50 in each row of mounting holes 50 on the rear fin 22, so that the second wind shielding portion 41 and the third wind shielding portion 42 on the rear fin 22 have better wind shielding effect.

Of course, the second wind shielding portion 41 and the third wind shielding portion 42 may be provided at other positions on the front fin 21 and the rear fin 22, and may be specifically determined according to the structures of the front fin 21 and the rear fin 22. For example: the second wind shielding portion 41 and the third wind shielding portion 42 may be disposed between two adjacent rows of mounting holes 50 on the front fin 21 or the rear fin 22.

On the basis of any of the above embodiments, as shown in fig. 3, the second wind shielding portion 41 may be made to include a plurality of first louver structures 43 and a plurality of second louver structures 44 that are disposed opposite to each other, and when the second wind shielding structure 41 is disposed on the front fin 21, the plurality of first louver structures 43 and the plurality of second louver structures 44 on the front fin 21 may be arranged along the air inlet side to the air outlet side of the front fin 21, so that the second wind shielding portion 41 on the front fin 21 has a larger wind shielding area, and the heat exchange efficiency of the refrigerant in the heat exchange tube near the second wind shielding portion 41 is improved.

It should be noted that the first louver structure 43 and the plurality of second louver structures 44 on the front fin 21 may be protruded from one side surface of the front fin 21; the first louver structure 43 and the plurality of second louver structures 44 on the front fin 21 may be passed through the front fin 21 and protrude from both side surfaces of the front fin 21, which is not limited in this embodiment.

As shown in fig. 3, the total number of the first louver structure 43 and the second louver structure 44 included in each second wind shielding portion 41 on the front fin 21 is n, the windowing angle is α, the windowing height is h, and in this embodiment, 6 n.ltoreq.8, 20 α.ltoreq.30 °, or 0.6 mm.ltoreq.h.ltoreq.0.8 mm may be made so that the wind speed reduced by the second wind shielding portion 41 on the front fin 21 approaches the expected wind speed, which is the wind speed when the wind speed distribution on the front fin 21 is uniform.

It will be appreciated that one of n, α and h may be made to satisfy the above requirement, or a plurality of n, α and h may be made to satisfy the above requirement, and of course, when all of n, α and h satisfy the above requirement, the wind speed reduced by the second wind shielding portion 41 is closer to the expected wind speed.

Similarly, when the second wind shielding structure 41 is disposed on the rear fin 22, the plurality of first louver structures 43 and the plurality of second louver structures 44 on the rear fin 22 may be arranged from the air inlet side to the air outlet side of the rear fin 22, and the size, shape, or number of the plurality of first louver structures 43 and the plurality of second louver structures 44 included in each second wind shielding portion 41 on the rear fin 22 may refer to the size, shape, or number of the plurality of first louver structures 43 and the plurality of second louver structures 44 included in each second wind shielding portion 41 on the front fin 21, which will not be repeated herein.

The plurality of first louver structures 43 included in each second wind shielding portion 41 of the fin assembly may be the same opening angle α and opening height h, or may be a plurality of different opening angles α and opening heights h, and may be specific according to the structure of the fin assembly. Similarly, the plurality of second louver structures 44 included in each second wind shielding portion 41 may be the same opening angle α and opening height h, or may be a plurality of different opening angles α and opening heights h, which will not be described herein.

The plurality of second wind shielding portions 41 of the fin assembly may have the same size or may have a plurality of different sizes. For example: when the second wind shielding portions 41 are provided on the front fin 21, the opening heights of the plurality of second wind shielding portions 41 on the front fin 21 can be made 0.7mm, the opening angle α of the second wind shielding portion 41 adjacent to the third wind shielding portion 42 in the second gear wind shielding assembly 40a can be made 28.6 °, and the opening angle α of the other second wind shielding portions 41 on the front fin 21 can be made 23 °, so that the wind speed distribution on the front fin 21 can be made more uniform. When the second wind shielding portions 41 are provided on the rear fins 22, the opening heights of the plurality of second wind shielding portions 41 on the rear fins 22 are made to be 0.7mm, and the opening angle α of the second wind shielding portion 41 adjacent to the third wind shielding portion 42 in the third gear wind shielding assembly 40b and the fourth gear wind shielding assembly 40c is made to be 28.6 °, and the opening angles α of the other second wind shielding portions 41 on the rear fins 22 are made to be 23 °, so that the wind speed distribution on the rear fins 22 is made more uniform.

On the basis of any of the above embodiments, as shown in fig. 4, the third wind shielding portion 42 may be made to include a plurality of bridge structures 45 so that the wind shielding area of the third wind shielding portion 42 is smaller than the wind shielding area of the second wind shielding portion 41 and the heat exchange efficiency in the vicinity of the third wind shielding portion 42 is increased.

When the third wind shielding portions 42 are disposed on the front fins 21, the plurality of bridge structures 45 in each third wind shielding portion 42 on the front fins 21 may be arranged from the air inlet side to the air outlet side of the front fins 21, so as to reduce the airflow direction changed by the bridge structures 45, and make the wind speed distribution on the front fins 21 more uniform.

As shown in fig. 4, each third wind shielding portion 42 on the front fin 21 includes a number of bridge structures 45 of n1 and a height of the bridge structures 45 of h1, in this embodiment, 3 n 15 or 0.5mm h1 0.7mm may be used to make the wind speed on the front fin 21 reduced by the third wind shielding portion 42 approach the expected wind speed when the wind speed distribution on the front fin 21 is uniform.

In this case, one of n1 and h1 may be satisfied, or both n1 and h1 may be satisfied, and of course, when both n1 and h1 satisfy the above requirements, the wind speed reduced by the third wind shielding portion 42 is closer to the expected wind speed.

Similarly, when the third wind shielding portions 42 are disposed on the rear fins 22, the plurality of bridge structures 45 in each of the third wind shielding portions 42 on the rear fins 22 may be arranged from the air inlet side to the air outlet side of the rear fins 22, and the size, shape and number of the plurality of bridge structures 45 included in each of the third wind shielding portions 42 on the rear fins 22 may be referred to the size, shape and number of the plurality of bridge structures 45 included in each of the third wind shielding portions 42 on the front fins 21, which will not be described herein.

It should be noted that, the plurality of bridge structures 45 included in each third wind shielding portion 42 of the fin assembly may have the same size, or may have a plurality of different sizes, which may be specifically determined according to the structure of the fin assembly. In addition, the third wind shielding portions 42 at different positions on the fin assembly may be the same size, or may be a plurality of different sizes, for example: the number of the bridge structures 45 included in one portion of the third wind shielding portion 42 may be 3, the number of the bridge structures 45 included in the other portion of the third wind shielding portion 42 may be 4,5, etc., so that the third wind shielding portions 42 at different positions of the front fin 21 and the rear fin 22 have different wind shielding areas to further make the wind speed distribution on the front fin 21 and the rear fin 22 uniform.

In addition to any of the above embodiments, in this embodiment, as shown in fig. 2, the first wind shielding portion 30 may be made to include a plurality of third louver structures 46 distributed on the front fin 21 and the rear fin 22, and the windows 46a of the plurality of third louver structures 46 located on the front fin 21 may be made to face the air intake side of the front fin 21, and the windows 46a of the plurality of third louver structures 46 located on the rear fin 22 may be made to face the air intake side of the rear fin 22, so as to increase the wind shielding area of the first wind shielding portion 30.

Wherein, the third louver structure 46 on the front fin 21 may be protruded from one side surface of the front fin 21, and the third louver structure 46 on the rear fin 22 may be protruded from one side surface of the rear fin 22, so as to further increase the wind shielding area of the first wind shielding portion 30.

As shown in fig. 4, the first wind shielding portion 30 includes the third louver structure 46 in the number of n2 and the louver angle α1 and the louver height h2, and in this embodiment, n2 is 4-16, α2 is 30-60, or h2 is 0.6-0.8 mm, so that the wind speed reduced by the first wind shielding portion 30 approaches the desired wind speed.

However, one of n2, α1, and h2 may be set to satisfy the above-described requirement, or a plurality of n2, α1, and h2 may be set to satisfy the above-described requirement, and of course, when all of n2, α1, and h2 satisfy the above-described requirement, the wind speed reduced by the first wind shielding portion 30 is closer to the expected wind speed.

It should be noted that the plurality of third louver structures 46 included in the first wind shielding portion 30 may have the same size, or may have a plurality of different sizes, and may be specifically determined according to the structure of the fin assembly.

On the basis of any of the above embodiments, as shown in fig. 1, when the first gear wind shielding assembly 40 and the second gear wind shielding assembly 40a are provided on the front fin 21, the third wind shielding portion 42 in the first gear wind shielding assembly 40 may include a plurality of first sub wind shielding portions 42a and a plurality of second sub wind shielding portions 42b, where the wind shielding area of the first sub wind shielding portion 42a is larger than the wind shielding area of the second sub wind shielding portion 42b, and the first sub wind shielding portion 42a and the second sub wind shielding portion 42b in the first gear wind shielding assembly 40 are sequentially arranged along the direction in which the front fin 21 is far away from the top of the fin assembly, so that the wind speed distribution of the front fin 21 near the wind inlet side is uniform.

Or the third wind shielding portion 42 in the second gear wind shielding assembly 40a may include at least one third sub wind shielding portion 42c and a plurality of first sub wind shielding portions 42a, where a wind shielding area of the third sub wind shielding portion 42c is larger than a wind shielding area of the first sub wind shielding portion 42a, and the third sub wind shielding portion 42c and the first sub wind shielding portion 42a in the second gear wind shielding assembly 40a are sequentially arranged along a direction that the front fin 21 is far away from the top of the fin assembly, so that wind speed distribution of the front fin 21 near the wind outlet side is more uniform.

It should be noted that, when the third wind shielding portion 42 in the first gear wind shielding assembly 40 includes a plurality of first sub wind shielding portions 42a and a plurality of second sub wind shielding portions 42b, the third wind shielding portion 42 in the second gear wind shielding assembly 40a includes at least one third sub wind shielding portion 42c and a plurality of first sub wind shielding portions 42a, and the first sub wind shielding portions 42a and the second sub wind shielding portions 42b in the first gear wind shielding assembly 40, and the third sub wind shielding portions 42c and the first sub wind shielding portions 42a in the second gear wind shielding assembly 40a are simultaneously arranged in the above manner, the overall wind speed of the front fin 21 is more uniform, and the heat exchange efficiency is higher.

In the present embodiment, the number of the second wind shielding portions 41 and the third wind shielding portions 42 in the first gear wind shielding assembly 40 may be determined according to the wind speed at each portion of the front fin 21.

For example, as shown in fig. 1 and 6, the number of the second wind shielding portions 41 in the first gear wind shielding assembly 40 may be3, the number of the third wind shielding portions 42 may be 8, 5 of the 8 third wind shielding portions 42 may be the first sub wind shielding portions 42a, and the other 3 may be the second sub wind shielding portions 42b, so that the wind speed distribution of the front fins 21 on the intake side may be more uniform.

Similarly, the number of the second wind shielding portions 41 and the third wind shielding portions 42 in the second gear wind shielding assembly 40a may be determined according to the wind speed at each portion of the front fin 21. As shown in fig. 1, the number of the second wind shielding portions 41 in the second gear wind shielding assembly 40a may be 5, the number of the third wind shielding portions 42 may be 4, and the 4 third wind shielding portions 42 may be the first sub wind shielding portions 42a, so that the wind speed of the front fin 21 near the wind inlet side is closer to the wind speed near the wind outlet side. Alternatively, as shown in fig. 6, the number of the second wind shielding portions 41 in the second gear wind shielding assembly 40a may be 4, the number of the third wind shielding portions 42 may be 5, and 4 of the third wind shielding portions 42 may be the first sub wind shielding portions 42a, and 1 of the third sub wind shielding portions 42c may be used to make the wind speed distribution of the front fin 21 near the wind outlet side more uniform, and to make the wind speed of the front fin 21 near the wind inlet side more approximate to the wind speed near the wind outlet side

In this embodiment, the first sub-wind shielding portion 42a, the second sub-wind shielding portion 42b and the third sub-wind shielding portion 42c may include different numbers of bridge structures 45, so that the wind shielding area of the first sub-wind shielding portion 42a is larger than the wind shielding area of the second sub-wind shielding portion 42b and smaller than the wind shielding area of the third sub-wind shielding portion 42 c. For example, as shown in fig. 1, the number of the bridge structures 45 included in the first sub wind shielding portion 42a may be 4, the number of the bridge structures 45 included in the second sub wind shielding portion 42b may be 3, and the number of the bridge structures 45 included in the third sub wind shielding portion 42c may be 5. Each bridge structure 45 may be an integral structure extending along the length direction of the front fin 21 or the rear fin 22, or may be a multi-segment structure extending along the length direction of the front fin 21 or the rear fin 22, which is not limited in this embodiment.

In addition to any of the above embodiments, when the third gear wind shielding assembly 40b and the fourth gear wind shielding assembly 40c are provided on the rear fin 22, as shown in fig. 1, the third wind shielding portion 42 in the fourth gear wind shielding assembly 40c may include a plurality of first sub wind shielding portions 42a, and the third wind shielding portion 42 in the third gear wind shielding assembly 40b may include a plurality of second sub wind shielding portions 42b, and since the wind shielding area of the first sub wind shielding portion 42a is larger than the wind shielding area of the second sub wind shielding portion 42b, the wind speed of the rear fin 22 near the wind outlet side may be further reduced, so that the wind speed of the rear fin 22 near the wind outlet side may be closer to the wind speed near the wind inlet side.

In addition, as shown in fig. 6, the third wind shielding part 42 in the fourth gear wind shielding assembly 40c may include a plurality of first sub wind shielding parts 42a and at least one third sub wind shielding part 42c, wherein the wind shielding area of the third sub wind shielding part 42c is larger than the wind shielding area of the first sub wind shielding part 42a, and the third sub wind shielding part 42c and the first sub wind shielding part 42a in the fourth gear wind shielding assembly 40c are sequentially arranged in a direction in which the rear fin 22 is far from the top of the fin assembly, so that the wind speed distribution of the rear fin 22 near the wind outlet side is more uniform.

In the present embodiment, the number of the second wind shielding portions 41 and the third wind shielding portions 42 in the third gear wind shielding assembly 40b may be determined according to the wind speed at each portion of the rear fin 22.

For example, as shown in fig. 1 and 6, the number of the second wind shielding portions 41 in the third gear wind shielding assembly 40b may be 1, the number of the third wind shielding portions 42 may be 4, and the 4 third wind shielding portions 42 may be the second sub wind shielding portions 42b, so that the wind speed distribution of the rear fin 22 on the intake side may be more uniform.

Similarly, the number of the second wind shielding portions 41 and the third wind shielding portions 42 in the fourth gear wind shielding assembly 40c depends on the wind speed at each portion of the rear fin 22. As shown in fig. 1, the number of the second wind shielding portions 41 in the fourth gear wind shielding assembly 40c may be 2, the number of the third wind shielding portions 42 may be 3, and the 3 third wind shielding portions 42 may be the first sub wind shielding portions 42a, so that the wind speed of the rear fin 22 near the wind inlet side is closer to the wind speed near the wind outlet side. Alternatively, as shown in fig. 6, the number of the second wind shielding portions 41 in the fourth gear wind shielding assembly 40c may be 1, the number of the third wind shielding portions 42 may be 4, and 3 of the second wind shielding portions 42a may be the first sub wind shielding portions 42a, and the other 1 third sub wind shielding portion 42c may be used, so that the wind speed distribution of the rear fin 22 near the wind outlet side may be more uniform, and the wind speed of the rear fin 22 near the wind inlet side may be more similar to the wind speed near the wind outlet side.

On the basis of providing the first wind shielding portion 30 at the connection position of the front fin 21 and the rear fin 22, the second wind shielding portion 41 and the third wind shielding portion 42 may be separately provided on the front fin 21, and the number, structure and distribution of the second wind shielding portion 41 and the third wind shielding portion 42 on the front fin 21 may be set in the above manner so as to make the wind speed distribution on the front fin 21 uniform; the second wind shielding part 41 and the third wind shielding part 42 may be separately arranged on the rear fin 22, and the number, the structure and the distribution manner of the second wind shielding part 41 and the third wind shielding part 42 on the rear fin 22 may be set in the above manner, so that the wind speed on the rear fin 22 is uniformly distributed; in addition, the second wind shielding part 41 and the third wind shielding part 42 can be arranged on the front fin 21 and the rear fin 22 at the same time, and the number, the structure and the distribution mode of the second wind shielding part 41 and the third wind shielding part 42 on the front fin 21 and the rear fin 22 are all distributed according to the mode, so that the whole wind speed distribution of the fin assembly is more uniform, and the heat exchange efficiency of the heat exchanger is further improved.

On the basis of any of the above embodiments, as shown in fig. 1 and 6, the front fin 21 includes two outer and inner rows of mounting holes 50 corresponding to the first and second wind-blocking assemblies 40 and 40a, respectively, where the aperture of the plurality of mounting holes 50 near the top of the fin assembly in the two outer and/or inner rows of mounting holes 50 near the front fin 21 may be increased to allow the heat exchange tube with a larger diameter to pass through, so that the second wind-blocking portion 41 and the third wind-blocking portion 42c with a larger wind-blocking area are adjacent to the heat exchange tube with a larger diameter, thereby improving the heat exchange efficiency of the refrigerant in the heat exchange tube with a larger diameter and improving the heat exchange efficiency. In an alternative embodiment, as shown in FIG. 1, the apertures of the 6 mounting holes 50 near the top of the fin assembly in the outer row of mounting holes 50 on the front fin 21, and the apertures of the 4 mounting holes 50 in the middle of the inner row of mounting holes 50 may be made larger than the apertures of the other mounting holes 50 on the front fin 21. Alternatively, as shown in FIG. 6, the apertures of the 6 mounting holes 50 near the top of the fin assembly in the outer row of mounting holes 50 on the front fin 21 and the apertures of the 6 mounting holes 50 in the middle of the inner row of mounting holes 50 may be made larger than the apertures of the other mounting holes 50 on the front fin 21.

Similarly, as shown in fig. 6, the rear fin 22 includes an outer row of mounting holes 50 and an inner row of mounting holes 50 corresponding to the third gear wind shielding assembly 40b and the fourth gear wind shielding assembly 40c, respectively, where the aperture of the plurality of mounting holes 50 near the top of the fin assembly in the rear fin 22 and/or in the outer two rows of mounting holes 50 may be increased, which will not be described herein. In an alternative embodiment, the 2 mounting holes 50 near the top of the fin assembly in the inner row of mounting holes 50 of the rear fin 22 may be made larger in diameter than the other mounting holes 50 on the rear fin 22.

In addition to any of the above embodiments, as shown in fig. 1 and 6, a plurality of heat insulation portions 48 may be disposed on the upper portion of the front fin 21 and distributed along the length direction of the front fin 21, and the heat insulation portions 48 may be located between the first and second wind blocking assemblies 40 and 40a of the front fin 21, so as to reduce the heat conduction speed between both sides of the heat insulation portions 48 along the airflow direction, thereby improving the heat exchange efficiency of the front fin 21.

The heat insulating portion 48 may be a slit or a through hole extending in the longitudinal direction of the front fin 21.

Further, the heat insulation portion 48 may have a bridge structure, so that the wind speed at a position corresponding to the heat insulation portion 48 is reduced while the heat conduction speed between both sides of the heat insulation portion 48 in the air flow direction is reduced, so that the wind speed distribution on the front fin 21 is more uniform. Wherein, the height of the heat insulation part 48 of the bridge piece structure is 0.7mm and the width is 1mm, so that the heat insulation part 48 has better heat insulation and wind shielding effects.

Of course, a heat insulation portion may be disposed on the rear fin 22, and the heat insulation portion on the rear fin 22 is located between the third gear wind shielding assembly 40b and the fourth gear wind shielding assembly 40c, which will not be described herein.

On the basis of any of the above embodiments, as shown in fig. 1 and 6, a reinforcing portion 47 may be provided at an end portion of the front fin 21 remote from the top of the fin assembly to increase the strength of an end portion of the front fin 21 remote from the top of the heat exchanger. Wherein, the end of the front fin 21 far from the top of the heat exchanger may be provided with a wave plate structure to form the reinforcement 47, thereby making the structure of the front fin 21 simpler.

Of course, ribs, protrusions, etc. may be provided at the end of the front fin 21 remote from the top of the heat exchanger to form the reinforcing portion 47, specifically depending on the structure of the front fin 21.

In addition, a reinforcing portion may be disposed at an end of the rear fin 22 away from the top of the fin assembly, which will not be described herein.

The invention also provides a heat exchanger and an air conditioner indoor unit with the heat exchanger, wherein the air conditioner indoor unit and the heat exchanger comprise all schemes of all embodiments of the fin assembly, and the schemes are not repeated here. It will be appreciated that, since the indoor unit and the heat exchanger of the air conditioner according to the present invention include all the aspects of all the embodiments of the fin assembly described above, at least the same technical effects as those of the fin assembly are achieved, which are not described herein.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (14)

1. The fin assembly is characterized by comprising a front fin and a rear fin which are connected to the top of the fin assembly to form an inverted V-shaped structure, wherein a first wind shielding part, a second wind shielding part and a third wind shielding part with sequentially reduced wind shielding areas are arranged on the fin assembly, and the first wind shielding part is arranged at the joint of the front fin and the rear fin;

The front fins comprise a first gear wind shielding component and a second gear wind shielding component which are distributed along the air inlet side to the air outlet side of the front fins, the first gear wind shielding component and the second gear wind shielding component comprise at least one second wind shielding part and a plurality of third wind shielding parts, and the second wind shielding parts and the third wind shielding parts in the first gear wind shielding component and the second gear wind shielding component are sequentially distributed along the direction that the front fins are far away from the tops of the fin components; and/or the number of the groups of groups,

The rear fins comprise a third gear wind shielding assembly and a fourth gear wind shielding assembly which are distributed along the air inlet side to the air outlet side of the rear fins, the third gear wind shielding assembly and the fourth gear wind shielding assembly comprise at least one second wind shielding part and a plurality of third wind shielding parts, and the second wind shielding parts and the third wind shielding parts in the third gear wind shielding assembly and the fourth gear wind shielding assembly are sequentially distributed along the direction that the rear fins are far away from the tops of the fin assemblies;

the number of the second wind shielding parts in the second gear wind shielding assembly is larger than that of the second wind shielding parts in the first gear wind shielding assembly, so that the wind speed of the wind outlet side of the front fin is reduced by increasing the number of the second wind shielding parts in the second gear wind shielding assembly;

The number of the second wind shielding parts in the fourth gear wind shielding assembly is larger than that of the second wind shielding parts in the third gear wind shielding assembly, so that the wind speed of the wind outlet side of the rear fin is reduced by increasing the number of the second wind shielding parts in the fourth gear wind shielding assembly;

The front fin is provided with a plurality of rows of mounting holes distributed along the air inlet side to the air outlet side of the front fin, and the second wind shielding part and the third wind shielding part on the front fin are distributed between two adjacent mounting holes in each row of mounting holes on the front fin;

the rear fin is provided with a plurality of rows of mounting holes distributed along the air inlet side to the air outlet side of the rear fin, and the second wind shielding part and the third wind shielding part on the rear fin are distributed between two adjacent mounting holes in each row of mounting holes on the rear fin;

wherein, the apertures of a plurality of mounting holes near the top of the fin assembly in the inner and/or outer two rows of mounting holes of the front fin are larger than the apertures of other mounting holes on the front fin; the apertures of the plurality of mounting holes in the inner and/or outer rows of mounting holes of the rear fin near the top of the fin assembly are larger than the apertures of the other mounting holes on the rear fin.

2. The fin assembly of claim 1, wherein the second windshield includes a plurality of first louver structures and a plurality of second louver structures disposed opposite one another;

The first louver structures and the second louver structures are arranged along the air inlet side to the air outlet side of the front fin;

The second wind shielding part on the rear fin comprises a plurality of first louver structures and a plurality of second louver structures which are distributed from the air inlet side to the air outlet side of the rear fin.

3. The fin assembly of claim 2, wherein the second windshield includes a total number of first and second louver structures n, and 6 n 8;

The opening angles of the first shutter structure and the second shutter structure are alpha, and alpha is more than or equal to 20 degrees and less than or equal to 30 degrees;

The opening heights of the first shutter structure and the second shutter structure are h, and h is more than or equal to 0.6mm and less than or equal to 0.8mm.

4. The fin assembly of claim 1, wherein the third wind shield includes a plurality of bridge structures, the third wind shield on the front fin including a plurality of bridge structures arranged along an inlet side to an outlet side of the front fin;

the plurality of bridge piece structures included in the third wind shielding part on the rear fin are distributed along the air inlet side to the air outlet side of the rear fin.

5. The fin assembly of claim 4, wherein the third wind shield includes a total number of bridge structures of n1, and 3.ltoreq.n1.ltoreq.5;

The height of the bridge piece structure included in the third wind shielding part is h1, and h1 is more than or equal to 0.5mm and less than or equal to 0.7mm.

6. The fin assembly of claim 1, wherein the first wind shield includes a plurality of third louver structures distributed over the front fin and the rear fin, the windows of the third louver structures on the front fin facing the air intake side of the front fin, the windows of the third louver structures on the rear fin facing the air intake side of the rear fin.

7. The fin assembly of claim 6, wherein the first wind shield includes a number of third louver structures n2, and 6 n2 12;

The opening angle of the third shutter structure is alpha 1, and alpha 1 is more than or equal to 30 degrees and less than or equal to 60 degrees;

the opening height of the third shutter structure is h2, and h2 is more than or equal to 0.6mm and less than or equal to 0.8mm.

8. The fin assembly of any one of claims 1 to 7, wherein the third wind shielding portion in the first gear wind shielding assembly includes a first sub wind shielding portion and a second sub wind shielding portion, a wind shielding area of the first sub wind shielding portion is larger than a wind shielding area of the second sub wind shielding portion, and the first sub wind shielding portion and the second sub wind shielding portion in the first gear wind shielding assembly are sequentially arranged in a direction in which the front fin is away from a top of the fin assembly; and/or the number of the groups of groups,

The third wind shielding part in the second gear wind shielding assembly comprises a third sub wind shielding part and a first sub wind shielding part, the wind shielding area of the third sub wind shielding part is larger than that of the first sub wind shielding part, and the third sub wind shielding part and the first sub wind shielding part in the second gear wind shielding assembly are sequentially arranged along the direction that the front fin is far away from the top of the fin assembly.

9. The fin assembly of any one of claims 1 to 7, wherein the third wind shielding portion in the fourth gear wind shielding assembly includes a third sub wind shielding portion and a first sub wind shielding portion, a wind shielding area of the third sub wind shielding portion is larger than a wind shielding area of the first sub wind shielding portion, and the third sub wind shielding portion and the first sub wind shielding portion in the fourth gear wind shielding assembly are sequentially arranged in a direction in which the rear fin is away from the top of the fin assembly; or alternatively

The second wind shielding part in the third gear wind shielding assembly comprises a second sub wind shielding part, the second wind shielding part in the fourth gear wind shielding assembly comprises a first sub wind shielding part, and the wind shielding area of the first sub wind shielding part is larger than that of the second sub wind shielding part.

10. The fin assembly of any one of claims 1 to 7, wherein the front fin further comprises a fifth gear wind blocking assembly located between the first and second gear wind blocking assemblies, the fifth gear wind blocking assembly comprising a plurality of the second wind blocking portions and a plurality of the third wind blocking portions arranged in sequence in a direction in which the front fin is away from a top of the fin assembly; the number of second wind shielding parts in the fifth gear wind shielding assembly is larger than the number of second wind shielding parts in the first gear wind shielding assembly and smaller than the number of second wind shielding parts in the second gear wind shielding assembly; and/or the number of the groups of groups,

The rear fin further comprises a sixth gear wind shielding assembly, the sixth gear wind shielding assembly is located between the third gear wind shielding assembly and the fourth gear wind shielding assembly, and the sixth gear wind shielding assembly comprises a plurality of second wind shielding parts and a plurality of third wind shielding parts which are sequentially arranged along the direction that the rear fin is far away from the top of the fin assembly; the number of second wind shielding parts in the sixth gear wind shielding assembly is larger than the number of second wind shielding parts in the third gear wind shielding assembly and smaller than the number of second wind shielding parts in the fourth gear wind shielding assembly.

11. The fin assembly according to any one of claims 1 to 7, wherein a plurality of heat insulation portions are further provided on the front fin along a length direction of the front fin, the plurality of heat insulation portions being located between the first and second wind shielding assemblies, the heat insulation portions being bar-shaped slits or bar-shaped through holes extending along the length direction of the front fin; and/or the number of the groups of groups,

The rear fin is further provided with a plurality of heat insulation parts distributed along the length direction of the rear fin, the heat insulation parts are located between the third gear wind-shielding assembly and the fourth gear wind-shielding assembly, and the heat insulation parts are strip-shaped slits or strip-shaped through holes extending along the length direction of the rear fin.

12. The fin assembly according to any one of claims 1 to 7, wherein an end of said front fin remote from the top of said fin assembly is provided with a corrugated structure to enhance the strength of said front fin; and/or the number of the groups of groups,

The end part of one end of the rear fin, which is far away from the top of the fin assembly, is provided with a corrugated structure so as to improve the strength of the rear fin.

13. A heat exchanger comprising a fin assembly according to any one of claims 1 to 12.

14. An air conditioner indoor unit comprising the heat exchanger of claim 13.