CN108253544A - Wall indoor unit and air conditioner - Google Patents

Abstract

The invention discloses a wall-mounted indoor unit and an air conditioner, wherein the wall-mounted indoor unit includes a casing and a single-row heat exchanger, and the casing has an air inlet, an air outlet, and a connection between the air inlet and the air outlet. The heat exchange air channel between; the single-row heat exchanger is installed in the heat exchange air channel, the single-row heat exchanger is arranged in a V shape and includes a front heat exchanger and a rear heat exchanger, and the front The heat exchanger includes front fins, the rear heat exchanger includes rear fins, and the front fins and the rear fins are provided with a plurality of first windshield structures arranged at intervals along the length direction thereof, and the front fins A second wind-shielding structure is provided at the junction of the sheet and the rear fin, and the second wind-shielding structure is located between the first wind-shielding structure at the upper end of the front fin and the first wind-shielding structure at the upper end of the rear fin. between structures. The technical scheme of the invention reduces the wind speed difference at different parts of the single-row heat exchanger, thereby improving the heat exchange efficiency of the single-row heat exchanger.

Description

Wall-mounted indoor unit and air conditioner

technical field

The invention relates to the technical field of air conditioning, in particular to a wall-mounted indoor unit and an air conditioner.

Background technique

In the prior art, in order to make the outlet air temperature more uniform after heat exchange by the heat exchanger, the wall-mounted indoor unit usually adopts a double-row heat exchanger. Due to the use of double-row heat exchangers, when the distance between the plates of the heat exchangers is too dense, the wind resistance will be large, and the fans, especially the cross-flow fans, need to overcome the large resistance, which will cause the fans to have small air volume, high power, and loud noise. problems, leading to low user experience comfort. At the same time, the cost of using double-row heat exchangers is also relatively high. In view of this, there are more and more studies on single-row heat exchangers.

However, since the fins used in traditional heat exchangers are usually in the form of single fins (flat fins, louvers, bridge fins, corrugated fins, etc.), this will lead to differences in wind speeds flowing through different parts of the single-row heat exchanger. Larger, it will affect the heat exchange effect of different parts of the single-row heat exchanger, thereby reducing its overall heat exchange efficiency.

Contents of the invention

The main purpose of the present invention is to provide a wall-mounted indoor unit and an air conditioner with the wall-mounted indoor unit, aiming at improving the heat exchange efficiency of the wall-mounted indoor unit.

In order to achieve the above object, the wall-mounted indoor unit proposed by the present invention includes:

A casing, the casing has an air inlet, an air outlet, and a heat exchange air duct communicating between the air inlet and the air outlet;

A single-row heat exchanger is installed in the heat exchange air duct, the single-row heat exchanger is arranged in a V shape and includes a front heat exchanger and a rear heat exchanger, the front heat exchanger includes front fins, the The rear heat exchanger includes rear fins, the front fins and the rear fins are provided with a plurality of first windshield structures arranged at intervals along their length direction, the connection between the front fins and the rear fins A second wind-shielding structure is provided at the position, and the second wind-shielding structure is located between the first wind-shielding structure at the upper end of the front fin and the first wind-shielding structure at the upper end of the rear fin.

Preferably, the first windshield structure includes a plurality of first windshields arranged along the width direction of the front fin or the rear fin, and the first windshield The wind slice is the first bridge slice and/or the first window slice.

Preferably, the second windshield structure includes a plurality of second windows, the number of the second windows is n2, and 2≤n2≤4; the opening angle of the second windows is α2, and 30°≤α2≤60°.

Preferably, ventilation holes are opened on the second windows of the second windshielding structure.

Preferably, the front fins include first fins and second fins arranged vertically, the lower ends of the first fins are connected to the upper ends of the second fins, and the first fins are connected to the upper ends of the second fins. A plurality of first wind-shielding structures are provided on the second fins, and a third wind-shielding structure is arranged at the connection between the first fins and the second fins.

Preferably, the third windshield structure includes a third window and a fourth window, the number of the third windows is n3, and 2≤n3≤3; the opening angle of the third window is α3, and 30°≤α3≤45°;

The number of the fourth windows is n4, and 2≤n4≤4; the opening angle of the fourth windows is α4, and 30°≤α4≤60°.

Preferably, the third window is arranged on the first fin, and the fourth window is arranged on the second fin.

Preferably, the front fins further include a third fin, the upper end of the third fin is connected to the lower end of the second fin, and the connection between the second fin and the third fin is provided with A fourth wind-shielding structure, the fourth wind-shielding structure is located inside the third fin.

Preferably, the fourth windshield structure includes a fifth window, the number of the fifth window is n5, and 1≤n5≤2; the opening angle of the fifth window is α5, and 20° ≤α5≤40°.

Preferably, a fifth wind-shielding structure is provided on the third fin, and the fifth wind-shielding structure includes a plurality of second wind-shielding fins, and the plurality of second wind-shielding fins are arranged along the third fin. Arranged in the width direction, the second windshield is the second bridge and or the sixth window.

The present invention also proposes an air conditioner, the air conditioner includes an outdoor unit and the above-mentioned wall-mounted indoor unit, and the wall-mounted indoor unit includes:

A casing, the casing has an air inlet, an air outlet, and a heat exchange air duct communicating between the air inlet and the air outlet;

A single-row heat exchanger is installed in the heat exchange air duct, the single-row heat exchanger is arranged in a V shape and includes a front heat exchanger and a rear heat exchanger, the front heat exchanger includes front fins, the The rear heat exchanger includes rear fins, the front fins and the rear fins are provided with a plurality of first windshield structures arranged at intervals along their length direction, the connection between the front fins and the rear fins A second wind-shielding structure is provided at the position, and the second wind-shielding structure is located between the first wind-shielding structure at the upper end of the front fin and the first wind-shielding structure at the upper end of the rear fin.

The technical solution of the present invention is to arrange a single-row heat exchanger in the heat exchange air channel, wherein the single-row heat exchanger is arranged in a V shape and includes front fins and rear fins, and the front fins and the rear fins are arranged along the There are first wind-shielding structures arranged at intervals in the length direction, and a second wind-shielding structure is arranged at the connection between the front fin and the rear fin. Such design can make the front fin and the rear fin The wind-shielding area at the joint of the single-row heat exchanger is relatively large, thereby reducing the wind speed at the joint, so that the wind speed distribution of each part of the front fin and the rear fin is more uniform, that is, even if the wind speed distribution of each part of the single-row heat exchanger is more uniform , to improve the overall heat exchange efficiency of the single-row heat exchanger.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative effort.

Fig. 1 is a sectional view of the wall-mounted indoor unit of the present invention;

Fig. 2 is a schematic structural view of an embodiment of the single-row heat exchanger in Fig. 1;

Fig. 3 is a schematic diagram of the structure of the single-row heat exchanger in Fig. 1 after being laid flat;

Fig. 4 is a sectional view of an embodiment of the first windshield structure in Fig. 1;

Fig. 5 is a cross-sectional view of another embodiment of the first windshield structure in Fig. 1;

Fig. 6 is a cross-sectional view of the second windshield structure in Fig. 1;

Fig. 7 is a detailed view of a third window of the third windshield structure in Fig. 1;

Fig. 8 is a detailed view of the fourth window of the third windshield structure in Fig. 1;

Fig. 9 is a sectional view of the fourth windshield structure in Fig. 1;

Fig. 10 is a schematic structural view of another embodiment of the single-row heat exchanger in Fig. 1;

Fig. 11 is a cross-sectional view of an embodiment of the fifth windshield structure in Fig. 10;

FIG. 12 is a cross-sectional view of another embodiment of the fifth windshielding structure in FIG. 10 .

Explanation of reference numbers:

label name label name 200 Wall-mounted indoor unit 131a first subwindow 210 shell 131b second subwindow 211 Inlet 132 first bridge film 212 air outlet 140 Second windshield structure 220 cross-flow rotor 141 second window 100 single row heat exchanger 150 third windshield structure 110 front heat exchanger 151 third window 111 front fin 152 fourth window 112 first fin 160 Fourth windshield structure 113 second fin 161 fifth window 114 third fin 170 fifth windshield structure 120 After heat exchanger 171 sixth window 121 rear fin 171a third subwindow 130 first windshield structure 171b fourth subwindow 131 first window 172 second bridge

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only for descriptive purposes, and should not be interpreted as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present invention.

The invention provides a wall-mounted indoor unit and an air conditioner with the wall-mounted indoor unit.

Referring to Fig. 1 , the wall-mounted indoor unit 200 proposed by the present invention includes a housing 210, the housing 210 has an air inlet 211, an air outlet 212, and a heat exchange air duct connecting the air inlet 211 and the air outlet 212 . The wall-mounted indoor unit 200 also includes a cross-flow fan wheel 220 and a single-row heat exchanger 100, the cross-flow fan wheel 220 and the single-row heat exchanger 100 are both located in the heat exchange air channel, and the single-row The heat exchanger 100 is located between the air inlet 212 and the cross-flow wind wheel 220, so that the cross-flow wind wheel 220 can drive the indoor air flow from the air inlet 211 into the heat exchange air channel, and pass through the single-row heat exchanger. 100 after heat exchange, and then flow out from the air outlet 212.

Wherein, the single-row heat exchanger 100 is arranged in a V-shaped heat exchange air duct, and includes a front heat exchanger 110 and a rear heat exchanger 120, and the upper end of the front heat exchanger 110 is connected to the rear heat exchanger. The upper ends of 120 are connected by a special-shaped cut structure. Referring to Fig. 2, the front heat exchanger 110 includes front fins 111, and the rear heat exchanger 120 includes rear fins 121. Both the front fins 111 and the rear fins 121 are provided with a plurality of The first windshield structures 130 are arranged at intervals in the direction. The connection between the front fin 111 and the rear fin 121 is provided with a second wind-shielding structure 140 , and the second wind-shielding structure 140 is located at the upper end of the front fin 111 and the first wind-shielding structure 130 and the Between the first windshield structure 130 at the upper end of the rear fin 121 .

Specifically, both the front fin 111 and the rear fin 121 are provided with a row of installation holes arranged at intervals along their length direction for installing the heat exchange tubes. The first wind-shielding structure 130 is disposed between two adjacent installation holes in order to improve the heat exchange effect of the heat exchange tubes.

The first wind-shielding structure 130 includes a plurality of first wind-shielding fins, and the plurality of first wind-shielding fins are arranged along the width direction of the front fin 111 or the rear fin 121 . It should be explained that the first wind-shielding structure 130 on the front fin 111 includes a plurality of first wind-shielding fins arranged along the width direction of the front fin 111 , and the first wind-shielding fins on the rear fin 121 A plurality of first windshield pieces included in the structure 130 are arranged along the width direction of the rear fin 121 . The specific structure of the first windshield will not be limited, for example, the first windshield may be the first bridge 132 and/or the first window 131 .

In an embodiment, referring to FIG. 2 and FIG. 3 , the first windshield piece may be a first bridge piece 132 and a first window piece 131 . Wherein, the first windshield on the front fin 111 includes a first window 131 on the upper end of the front fin 111 and a first bridge 132 on the lower end of the front fin 111; The first windshield includes a first window 131 disposed on the upper end of the rear fin 121 , and a first bridge 132 disposed on the lower end of the rear fin 121 .

For ease of description, referring to FIG. 4 , the first window 131 includes a first sub-window 131a and a second sub-window 131b. The first wind-shielding structure 130 includes a plurality of first sub-windows 131a and a plurality of second sub-windows 131b oppositely arranged; in this way, the first wind-shielding structure 130 can have a better wind-shielding effect. In this embodiment, the total number of first sub-windows 131a and second sub-windows 131b included in each first windshield structure 130 can be n1, where 6≤n1≤8; The opening angles of the window 131a and the second sub-window 131b are both α1, where 20°≤α≤30°; the opening angles of the first sub-window 131a and the second sub-window 131b The window height is h1, wherein, 0.5mm≤h1≤0.7mm.

Referring to FIG. 5 , the total number of first bridges 132 included in the first windshield structure 130 is N1, and 3≤N1≤5; the height of the first bridges 132 included in the first windshield structure 130 is H1, and 0.5mm≤H1≤0.7mm.

In yet another embodiment, the first wind-shielding piece is a first bridge piece 132; or, the first wind-shielding piece is a first window piece 131 (as shown in FIG. 11 ).

It can be understood that the single-row heat exchanger 100 is located at the air inlet 211 of the wall-mounted indoor unit 200 , and the wind speeds flowing through various parts of the single-row heat exchanger 100 are different, especially the wind speed at the top of the single-row heat exchanger 100 . much greater than the wind speed at its bottom. Therefore, the wind shielding area at the top of the single-row heat exchanger 100 can be increased by adding a second wind-shielding structure 140 on the top of the single-row heat exchanger 100, thereby reducing the wind speed at the top of the single-row heat exchanger 100, so that The wind speed at the top of the single-row heat exchanger 100 is more uniform than the wind speed at the bottom of the single-row heat exchanger 100 .

Specifically, the second windshield structure 140 includes a plurality of second windows 141 (as shown in FIG. 2 ), wherein a part of the second windows 141 is distributed on the upper end of the front fin 111 , and this part of the second The window 141 is located inside the front fin 111 ; another part of the second window 141 is distributed on the upper end of the rear fin 121 , and this part of the second window 141 is located inside the rear fin 121 .

There is no specific limitation on the number and opening angle of the second windows 141, wherein, in a preferred embodiment, referring to FIG. 6, the number of the second windows 141 is n2, and 2≤n2 ≤4; the opening angle of the second window 141 is α2, and 30°≤α2≤60°; the opening height of the second sub-window 141 is h2, where 0.5mm≤h2≤0.6mm .

The technical solution of the present invention provides a single-row heat exchanger 100 in the heat exchange air channel, wherein the single-row heat exchanger is arranged in a V shape and includes front fins 111 and rear fins 121, the front fins 111 and the rear fins The fin 121 is provided with first wind-shielding structures 130 arranged at intervals along its length direction, and the junction of the front fin 111 and the rear fin 121 is provided with a second wind-shielding structure 140. Such design can make all The wind-shielding area of the connection between the front fin 111 and the rear fin 121 is larger, thereby reducing the wind speed at the connection, so that the wind speed distribution of each part of the front fin 111 and the rear fin 121 is relatively uniform, even if the The wind speed distribution of each part of the single-row heat exchanger 100 is relatively uniform, so as to improve the overall heat exchange efficiency of the single-row heat exchanger 100 .

In the above embodiment, ventilation holes may be provided on the first windshield structure 130 and the second windshield structure 140, so as to dissipate the air flow passing through the first windshield structure 130 and the second windshield structure 140. Dispersion, thereby enhancing the windless effect of the wall-mounted indoor unit. Specifically, the ventilation holes are provided through the windshield (first bridge piece 132 or first window piece 131 ) of the first windshield structure 130 , and through the windshield piece of the second windshield structure. 140 on the second window 141.

Further, the front fins 111 include first fins 112 and second fins 113 (as shown in FIG. 2 and FIG. 3 ) arranged up and down, and the lower ends of the first fins 112 are connected to the first fins 112 . The upper ends of the two fins 113, the first fins 112 and the second fins 113 are provided with a plurality of first windshield structures 130, the first fins 112 and the second fins 113 is provided with a third windshield structure 150 .

The second fins 113 may be arranged in a straight line with the first fins 112 , of course, the second fins 113 may also be arranged at an angle with the first fins 112 . For example, the second fins 113 may be inclined in a direction away from the rear fins 121 , or may be inclined in a direction close to the rear fins 121 , which is not particularly limited here.

The third windshield structure 150 includes a third window 151 and a fourth window 152, wherein the third window 151 can be arranged on the first fin 112 or on the second fin 151 . similarly, the fourth window 152 may be disposed on the first fin 112 or on the second fin 113 . Preferably, the third window 151 is disposed inside the first fin 112 , and the fourth window 152 is disposed inside the second fin 113 .

Referring to FIG. 7 , the number of the third windows 151 is n3, and 2≤n3≤3; the opening angle of the third windows 151 is α3, and 30°≤α3≤45°. The opening height of the third sub-window 151 is h3, where 0.5mm≤h3≤0.6mm. Referring to FIG. 8 , the number of the fourth windows 152 is n4, and 2≤n4≤4; the opening angle of the fourth windows 152 is α4, and 30°≤α4≤60°. The opening height of the fourth sub-window 152 is h4, where 0.5mm≤h4≤0.6mm.

Furthermore, the front fin 111 also includes a third fin 114 (as shown in Figure 2 and Figure 11), the upper end of the third fin 114 is connected to the lower end of the second fin 113, and the first fin 114 is connected to the lower end of the second fin 113. A fourth wind-shielding structure 160 is provided at the junction of the second fin 113 and the third fin 114 , and the fourth wind-shielding structure 160 is located inside the third fin 114 .

The third fin 114 may be arranged in a straight line with the second fin 113 , of course, the third fin 114 may also be arranged at an angle with the second fin 113 . Preferably, the third fins 114 can be inclined towards the direction close to the rear fins 121 , so as to improve the heat exchange effect of the single-row heat exchanger 100 .

The fourth wind-shielding structure 160 is located inside the third fin 114, which can increase the wind-shielding area of the connection and reduce the wind speed at the connection. 9, the fourth windshield structure 160 includes fifth windows 161, the number of the fifth windows 161 is n5, and 1≤n5≤2; the opening angle of the fifth windows 161 is α5, and 20°≤α5≤40°; the opening height of the fifth sub-window 161 is h5, wherein, 0.5mm≤h5≤0.6mm.

Referring to FIG. 10 , the third fin 114 is provided with a fifth wind-shielding structure 170, and the fifth wind-shielding structure 170 includes a plurality of second wind-shielding blades, and a plurality of the second wind-shielding blades are arranged along the The third fins 114 are arranged in the width direction, and the second windshield is the second bridge 172 or the sixth window 171 .

In one embodiment, referring to FIG. 11 , the second windshield is a sixth window 171 . For ease of description, the sixth window 171 includes a third sub-window 171a and a fourth sub-window 171b, and the fifth windshield structure 170 includes a plurality of third sub-windows 171a and a plurality of The fourth sub-window 171b. In this way, the fifth wind-shielding structure 170 can have a better wind-shielding effect. In this embodiment, the total number of the third sub-window 171a and the fourth sub-window 171b included in the fifth windshield structure 170 can be n6, where 6≤n6≤8; The opening angles of the third sub-window and the fourth sub-window are both α6, wherein, 20°≤α6≤30°; the opening angles of the third sub-window and the fourth sub-window The window height is h6, wherein, 0.5mm≤h6≤0.6mm.

In another embodiment, the second windshield piece is a second bridge piece 172 (as shown in FIG. 2 and FIG. 12 ). Specifically, the total number of second bridges 172 included in the fifth windshield structure 170 is N2, where 3≤N2≤5; the height of the second bridges 172 included in the fifth windshield structure 170 is H2 , where, 0.5mm≤H2≤0.7mm.

In addition, in order to detect the wind speed of each part of the single-row heat exchanger 100 of the wall-mounted indoor unit 200 of the present application, the wind speeds of four places a, b, c, and d of the single-row heat exchanger 100 were tested (as shown in Figure 1 Shown), the test results are shown in Table 1 to Table 4 below.

Table 1 Wind speed value at a place of single row heat exchanger

parameter Example 1 Example 2 Example 3 Comparative example 1 n2 2 3 4 1 a2 30° 45° 60° 20° n3 2 3 3 1 a3 30° 40° 45° 20° n4 2 3 4 1 a4 30° 45° 60° 20° n5 1 2 2 0 #5 20° 30° 40° 0 wind speed m/s 1.5 1.4 1.4 2.0

Table 2 Wind speed value at b of single row heat exchanger

Table 3 Wind speed value at c of single row heat exchanger

parameter Example 1 Example 2 Example 3 Comparative example 1 n2 2 3 4 1 a2 30° 45° 60° 20° n3 2 3 3 1 a3 30° 40° 45° 20° n4 2 3 4 1 a4 30° 45° 60° 20° n5 1 2 2 0 #5 20° 30° 40° 0 wind speed m/s 1.2 1.3 1.4 0.8

Table 4 Wind speed value at d of single row heat exchanger

parameter Example 1 Example 2 Example 3 Comparative example 1 n2 2 3 4 1 a2 30° 45° 60° 20° n3 2 3 3 1 a3 30° 40° 45° 20° n4 2 3 4 1 a4 30° 45° 60° 20° n5 1 2 2 0 #5 20° 30° 40° 0 wind speed m/s 1.2 1.35 1.35 0.5

According to Table 1 to Table 4, it can be seen that the wind speed distribution of four places a, b, c, and d of the single-row heat exchanger 100 in Examples 1 to 4 is relatively uniform, while the a of the single-row heat exchanger 100 in Comparative Example 1 , b, c, and d are quite different in wind speed. Among them, the wind speeds at a, b, c, and d of the single-row heat exchanger 100 in Embodiment 3 are respectively 1.4m/s, 1.35m/s, 1.4m/s, and 1.35m/s, which can be drawn , the wind speed distribution of the four places a, b, c, and d of the single-row heat exchanger 100 is relatively uniform.

The present invention also proposes an air conditioner, which includes an outdoor unit and a wall-mounted indoor unit. For the specific structure of the wall-mounted indoor unit, refer to the above-mentioned embodiments. Since this air conditioner adopts all the technical solutions of all the above-mentioned embodiments, it is therefore It has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described here one by one.

The above is only a preferred embodiment of the present invention, and does not therefore limit the patent scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformation made by using the description of the present invention and the contents of the accompanying drawings, or direct/indirect use All other relevant technical fields are included in the patent protection scope of the present invention.

Claims (11)

1. A wall-mounted indoor unit, characterized in that, the wall-mounted indoor unit comprises: A casing, the casing has an air inlet, an air outlet, and a heat exchange air duct communicating between the air inlet and the air outlet; A single-row heat exchanger is installed in the heat exchange air duct, the single-row heat exchanger is arranged in a V shape and includes a front heat exchanger and a rear heat exchanger, the front heat exchanger includes front fins, the The rear heat exchanger includes rear fins, the front fins and the rear fins are provided with a plurality of first windshield structures arranged at intervals along their length direction, the connection between the front fins and the rear fins A second wind-shielding structure is provided at the position, and the second wind-shielding structure is located between the first wind-shielding structure at the upper end of the front fin and the first wind-shielding structure at the upper end of the rear fin. 2. The wall-mounted indoor unit according to claim 1, wherein the first wind-shielding structure comprises a plurality of first wind-shielding pieces, and the plurality of first wind-shielding pieces are along the front fin or the The rear fins are arranged in the width direction, and the first windshield is a first bridge and/or a first window. 3. The wall-mounted indoor unit according to claim 2, wherein the second windshielding structure comprises a plurality of second windows, and the number of the second windows is n2, and 2≤n2≤4 ; The opening angle of the second window is α2, and 30°≤α2≤60°. 4. The wall-mounted indoor unit according to claim 3, wherein the second window of the second wind-shielding structure is provided with a ventilation hole. 5. The wall-mounted indoor unit according to claim 3, wherein the front fins include first fins and second fins arranged vertically, and the lower ends of the first fins are connected to the The upper end of the second fin, the first fin and the second fin are provided with a plurality of first windshield structures, and the connection between the first fin and the second fin is provided with The third windshield structure. 6. The wall-mounted indoor unit according to claim 5, wherein the third wind-shielding structure includes a third window and a fourth window, and the number of the third windows is n3, and 2≤ n3≤3; the opening angle of the third window is α3, and 30°≤α3≤45°; The number of the fourth windows is n4, and 2≤n4≤4; the opening angle of the fourth windows is α4, and 30°≤α4≤60°. 7. The wall-mounted indoor unit according to claim 6, wherein the third window is arranged on the first fin, and the fourth window is arranged on the second fin. 8. The wall-mounted indoor unit according to claim 5, wherein the front fin further comprises a third fin, the upper end of the third fin is connected to the lower end of the second fin, and the first fin is connected to the lower end of the second fin. A fourth wind-shielding structure is provided at the junction of the second fin and the third fin, and the fourth wind-shielding structure is located inside the third fin. 9. The wall-mounted indoor unit according to claim 8, wherein the fourth windshield structure includes fifth windows, the number of the fifth windows is n5, and 1≤n5≤2; The opening angle of the fifth window is α5, and 20°≤α5≤40°. 10. The wall-mounted indoor unit according to claim 8, characterized in that, the third fin is provided with a fifth wind-shielding structure, and the fifth wind-shielding structure includes a plurality of second wind-shielding fins, multiple The two second windshield pieces are arranged along the width direction of the third fin, and the second windshield pieces are the second bridge piece or the sixth window piece. 11. An air conditioner, characterized by comprising an outdoor unit and a wall-mounted indoor unit according to any one of claims 1-10.