CN113266874A

CN113266874A - Air duct machine

Info

Publication number: CN113266874A
Application number: CN202110547229.7A
Authority: CN
Inventors: 刘晓蕾; 孟建军; 李晓宇; 曹法立; 刘彦伟
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-08-17
Anticipated expiration: 2041-05-19
Also published as: CN113266874B

Abstract

The invention provides a duct type air conditioner which can solve the technical problems in the prior art. The air pipe machine is characterized in that an indoor unit of the air pipe machine comprises a shell, a fan and a heat exchanger, wherein the heat exchanger comprises a plurality of fins, each fin is provided with an air outlet contour line, an air inlet contour line, a top end contour line and a bottom end contour line, and at least one row of a plurality of pipe holes distributed along the length direction of the fin is formed in each fin; the air outlet contour line and the air inlet contour line are both in an arc shape which is sunken from the air inlet side to the air outlet side, and the horizontal distance between the air outlet contour line and the air inlet contour line is gradually reduced from the top end of the fin to the bottom end. Under the condition that the volume of the inner space of the shell is fixed, the utilization rate of the heat exchanger with the arc-shaped outline to the inner space of the shell is high, and compared with the existing straight plate heat exchanger which is obliquely installed, the heat exchanger with the arc-shaped outline has large size, the performance of the indoor unit is favorably improved; and the width of the top end of the fin is gradually reduced towards the bottom end, so that the noise is reduced.

Description

Air duct machine

Technical Field

The invention relates to the technical field of air conditioning equipment, in particular to an improved structure of an air duct type indoor unit.

Background

The indoor unit of the current commercial air conditioner mainly comprises a four-side air outlet type air duct machine and an air duct machine, wherein the air duct machine occupies a leading position in the domestic market. The air duct machine is a new machine type developed according to market diversity requirements and overall decoration space changes, is suitable for occasions with small installation and maintenance width, and is particularly suitable for small-sized families. The requirement of users for reducing the noise of the household buried air duct is higher and higher, and the household buried air duct can be installed in a bedroom, so that the noise level of the air duct machine is required to be effectively controlled, abnormal noise is not allowed to appear, and the effect of complete silence is achieved.

Fig. 1 is a cross-sectional view of an indoor unit of a typical duct type air conditioner, where the following technical problems mainly exist in the structure of the indoor unit of the duct type air conditioner in the prior art: the size is too large, and the installation space is limited; the noise problem is more prominent, and the complaints of users are more; the drainage is poor, the refrigerating performance of the indoor unit is unstable, microorganisms are easy to breed on the surface of the heat exchanger, and the indoor air supply quality is reduced.

The sources of the above technical problems are generally related to heat exchangers for the following reasons:

the heat exchanger of the existing air duct machine has poor heat exchange performance, and in order to meet the performance of an indoor unit, the size of the heat exchanger can only be increased, so that the size of a frame body is correspondingly increased;

the air supply distribution on the surface of the heat exchanger of the existing air pipe machine is extremely uneven, and the air resistance of the heat exchanger does not consider the air field distribution inside the air pipe machine, so that the air supply noise is larger.

Disclosure of Invention

The invention provides a duct type air conditioner which can solve the technical problems in the prior art.

In some embodiments of the present application, a ducted air conditioner is provided, an indoor unit of which includes:

a housing;

a fan disposed in the housing;

the heat exchanger is arranged in the shell and positioned on one side of the fan, the heat exchanger comprises a plurality of fins, the fins are provided with an air outlet contour line, an air inlet contour line, a top end contour line and a bottom end contour line, and at least one row of a plurality of pipe holes distributed along the length direction of the fins are formed in the fins;

the air outlet contour line and the air inlet contour line are both in an arc shape which is sunken from the air inlet side to the air outlet side, and the horizontal distance between the air outlet contour line and the air inlet contour line is gradually reduced from the top end of the fin to the bottom end.

In some embodiments of this application, the air-out outline line has a benchmark, the benchmark is the heat exchanger high position horizontal plane that the average value of the air inlet face maximum wind speed and the minimum wind speed of heat exchanger corresponds with the nodical of air-out outline line, the benchmark is compared the top and the bottom of air-out outline line are more close to the air-out side.

In some embodiments of this application, the air-out outline line includes first circular arc section, second circular arc section and the third circular arc section that connects gradually along its extending direction, first circular arc section with the second circular arc section is located the top of benchmark, the third circular arc section is located the below of benchmark, just first circular arc section the second circular arc section the curvature radius R1, R2, R3 of third circular arc section reduce in proper order.

In some embodiments of the present application, the arc length of the first arc segmentl1. The arc length of the second arc segmentl2 satisfiesl1=a*l2, wherein a = 0.2-1.0.

In some embodiments of the present application, 1.0< R1/R2<5.0, and 1.0< R2/R3< 5.

In some embodiments of the present application, centers P1, P2, and P3 of the first arc segment, the second arc segment, and the third arc segment are collinear, and an included angle ψ is formed between a straight line where P1, P2, and P3 are located and a horizontal plane, where 0 ° < ψ <90 °.

In some embodiments of this application, air outlet profile line can with after the air inlet profile line inclines to the air inlet side and shifts, its slope translation direction and the contained angle between the horizontal plane equal to the angle of contained angle ψ.

In some embodiments of the present application, the top contour and the bottom contour are both horizontal lines.

In some embodiments of the present application, the number of the tube holes is gradually reduced from the top end to the bottom end of the fin.

In some embodiments of the present application, the distance between the row of pipe holes closest to the air inlet contour line and the air inlet contour line is Cf, the distance between the row of pipe holes closest to the air outlet contour line and the air outlet contour line is Cb, and Cf > Cb.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a prior art ducted air conditioner;

FIG. 2 is a graph showing a relationship between the height of a heat exchanger and the wind speed of the air inlet surface of the heat exchanger in the ducted air conditioner of the prior art;

FIG. 3 is a block diagram of a ducted air conditioner according to one embodiment;

FIG. 4 is a diagram of a single fin of a heat exchanger of a ducted air conditioner in accordance with an exemplary embodiment;

FIG. 5 is a structural diagram of a tube hole distribution on a single fin of a heat exchanger of a ducted air conditioner according to a first embodiment;

FIG. 6 is a graph showing a relationship between a heat exchanger height of the ducted air conditioner and a wind speed of an air inlet surface of the heat exchanger according to the second embodiment;

FIG. 7 is a view showing a structure of a single fin of a heat exchanger of the air duct machine according to the second embodiment;

FIG. 8 is a graph illustrating a relationship between the height of a heat exchanger of the ducted air conditioner and the wind speed of the air inlet surface of the heat exchanger according to the third embodiment;

fig. 9 is a structure diagram of a single fin of a heat exchanger of the air duct machine according to the third embodiment;

the drawings in FIG. 1 illustrate: 1. a heat exchanger.

The drawings in fig. 3 to 9 illustrate: 100. a housing; 110. an air outlet; 200. a fan; 300. a heat exchanger; 310. a fin; 311. an air outlet contour line; 311A, a first arc segment; 311B, a second arc segment; 311C, a third arc segment; 311D, a fourth arc segment; 315E, a fifth arc segment; 312. an air inlet contour line; 313. a top contour line; 314. a bottom contour line; 315. the tube hole.

Detailed Description

The technical scheme of the invention is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

An outdoor unit (outdoor unit) of an air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, an indoor unit (outdoor unit) of an air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

The air duct machine is a hidden air conditioner for short, and can also be called an air conditioner air duct machine or an air duct machine air conditioner. The air duct machine solves the problem that the appearance of the on-hook air conditioner and the cabinet air conditioner is influenced when the on-hook air conditioner and the cabinet air conditioner are exposed outside, and meanwhile, the length of a travelling pipe is longer than that of a common household air conditioner, and the installation is more flexible.

Example one

In the embodiment, referring to fig. 3 and 4, an indoor unit of the duct air conditioner includes a casing 100, a fan 200, and a heat exchanger 300, where the casing 100 is provided with an air inlet (not shown) and an air outlet 110, the fan 200 is disposed in the casing 100 and close to the air inlet, the heat exchanger 300 is disposed in the casing 100 and located at one side of the fan 200 and close to the air outlet 110, and when the fan 200 operates, indoor air enters the casing 100 through the air inlet, then flows through the heat exchanger 300 to exchange heat, and is discharged to the indoor through the air outlet 110.

The heat exchanger 300 comprises a plurality of fins 310, wherein each fin 310 is provided with an air outlet contour line 311, an air inlet contour line 312, a top end contour line 313 and a bottom end contour line 314, and at least one row of a plurality of pipe holes 315 distributed along the length direction of the fin 310 is formed on the fin 310; the air outlet contour line 311 is located on the air outlet side of the heat exchanger 300, i.e., close to the air outlet 110, the air inlet contour line 312 is located on the air inlet side of the heat exchanger 300, i.e., close to the air inlet, in this embodiment, the air outlet contour line 311 and the air inlet contour line 312 are both in the shape of a concave arc from the air inlet side to the air outlet side, and the horizontal distance D between the air outlet contour line 311 and the air inlet contour line 312 is gradually reduced from the top end of the fin 310 to the bottom end.

Fin 310 of heat exchanger 300 in this embodiment, its air-out outline line 311 and air inlet outline line 312 all are by the sunken arc of air inlet side direction air-out side direction for heat exchanger 300 profile shape is the arc, under the certain circumstances of casing 100 inner space volume, heat exchanger 300 of arc profile compares the straight plate heat exchanger of current slope installation to casing 100 inner space's high-usage, heat exchanger 300 of arc profile compares the straight plate heat exchanger size of current slope installation big, then be favorable to improving indoor set performance.

Meanwhile, most of the fans 200 of the ducted air conditioner are centrifugal fans, and due to the characteristics of the centrifugal fans, the wind speed on the inlet side of the heat exchanger is reduced in a gradient manner from top to bottom. Specifically, taking the conventional obliquely installed straight plate heat exchanger 1 shown in fig. 1 as an example, a graph of a corresponding relationship between a height H of the heat exchanger and a wind speed V of a wind inlet surface of the heat exchanger 1 is shown in fig. 2, in an upper 1/5H area of the heat exchanger 1 (a partial area of a downward 1/5H with a top edge of the heat exchanger as a starting point), the wind speed of the wind inlet surface of the heat exchanger 1 is the maximum wind speed Vmax and is distributed uniformly, and in an area from an upper portion 1/5H to a middle portion 1/2H, the heat exchanger 1 is in a high wind area, at this time, the wind speed V of the wind inlet surface is 60% -100% of the maximum wind speed Vmax, and in an area from the lower portion 1/2H to H, the wind speed V of the wind inlet surface of the heat exchanger is attenuated to a minimum wind speed Vmin, and the minimum wind speed Vmin is 20% of the maximum wind speed Vmax, and the partial wind quantity is small. In this embodiment, the horizontal distance (i.e., the width of the fins) between the air outlet contour line 311 and the air inlet contour line 312 is gradually reduced from the top end to the bottom end of the fins 310 (the direction indicated by the vertical downward arrow in fig. 3 and 4), and on the one hand, the horizontal distance is adapted to the wind field distribution rule of the wind pipe machine, so that the wind resistance of the high wind area and the wind resistance of the low wind area of the fins 310 are large, and thus the wind speed of the high wind area is reduced, the wind speed of the low wind area is increased, the distribution uniformity of the wind field is further improved, and the noise is reduced; on the other hand, the heat exchange in the high wind area is strong, the width of the fins is large, the performance of the heat exchanger is favorable, the heat exchange in the low wind area is poor, and the cost can be saved due to the small width of the fins.

In some embodiments of the present application, the air outlet contour line 311 has a reference point M, and the reference point M is an average value V of the maximum wind speed Vmax and the minimum wind speed Vmin of the air inlet surface of the heat exchanger 300_AverageThe intersection point of the horizontal plane a of the height position of the corresponding heat exchanger and the air outlet contour line 311, and the reference point M are closer to the air outlet side than the top end B and the bottom end C of the air outlet contour line 311, so that the utilization rate of the inner space of the casing 100 is further improved, the performance of the indoor unit is improved, and the production cost is reduced.

In this embodiment, the wind pipe machine takes a graph of the corresponding relationship between the height H of the heat exchanger and the wind speed V of the air inlet surface of the heat exchanger 1 shown in fig. 2 as an example, and the reference point M is located at 1/2H (H is the height of the heat exchanger 310). Meanwhile, as shown in fig. 4, the air outlet contour line 311 in this embodiment only includes a first arc segment 311A, a second arc segment 311B, and a third arc segment 311C sequentially connected along the extending direction thereof, which is a three-segment structure. At this time, the first arc segment 311A and the second arc segment 311B are located above the reference point M, the third arc segment 311C is located below the reference point M, and the curvature radii R1, R2, and R3 of the first arc segment 311A, the second arc segment 311B, and the third arc segment 311C decrease in sequence.

Further, the arc length of the first arc segment 311Al1. Arc length of second arc segment 311Bl2 satisfiesl1=a*l2, wherein a = 0.2-1.0.

In the present embodiment, 1.0< R1/R2<5.0, and 1.0< R2/R3<5, preferably, R1<600mm, R3 >100 mm.

In order to further accurately determine the profile shape of the wind wheel profile 311, in this embodiment, circle centers P1, P2, and P3 of the first circular arc segment 311A, the second circular arc segment 311B, and the third circular arc segment 311C are collinear, and an included angle ψ is formed between a straight line where P1, P2, and P3 are located and a horizontal plane, where 0 ° < ψ <90 °.

On the basis of accurate determination of the air outlet contour line 311, the air outlet contour line can be at least partially coincided with the air inlet contour line 312 after being obliquely translated towards the air inlet side, and the included angle between the oblique translation direction of the air outlet contour line 311 and the horizontal plane is equal to the included angle psi. That is, at least some points on the inlet contour line 312 are obtained by translating corresponding points on the outlet contour line 311 along the included angle ψ toward the inlet side, and the specific translation angle depends on the designed width of the fin 310. Obtain air inlet contour line 312 through the slope translation with air outlet contour line 311, easily realize and satisfying under air outlet contour line 311 and air inlet contour line 312 all are by the sunken curved prerequisite of air inlet side direction air-out side direction, can also satisfy the horizontal distance between air outlet contour line 311 and the air inlet contour line 312 and by fin 310's top to the bottom direction reduce gradually.

In this embodiment, the top contour line 313 and the bottom contour line 314 are both horizontal lines, i.e., extend in the horizontal direction, one end of the top contour line 313 is connected to the top end of the air-out contour line 311, the other end is connected to the top end of the air-in contour line 312, one end of the bottom contour line 314 is connected to the bottom end of the air-out contour line 311, and the other end is connected to the bottom end of the air-in contour line 312. The horizontal placement of the top contour 313 and the bottom contour 314 may facilitate installation of the heat exchanger 300 within the ducted air conditioner cabinet 100.

Referring to fig. 5, the number of the tube holes 315 in the present embodiment is gradually decreased from the top end to the bottom end of the fin 310 to correspond to the width of the fin 310 gradually decreased from the top end to the bottom end. As shown in fig. 5, in the present embodiment, the tube holes on the fin 310 are gradually reduced from three rows of tube holes to one row of tube holes from top to bottom, the diameter of the tube hole 315 is between 4.0 mm and 6.0mm, the distance Ft between two adjacent tube holes 315 in the present embodiment is equal, and 12mm < Ft <18 mm.

In order to meet the area requirement of a heat exchanger, the heat exchanger of the existing air duct machine often has an inclined installation angle of more than 40 degrees, and under the refrigeration working condition, compared with a vertically installed heat exchanger, condensed water on the surface of the inclined heat exchanger is difficult to drain; in order to solve the technical problem, in this embodiment, the distance between the row of pipe holes 315 closest to the air inlet contour line 312 and the air inlet contour line 312 is Cf, the distance between the row of pipe holes 315 closest to the air outlet contour line 311 and the air outlet contour line 312 is Cb, and Cf > Cb. Because the tuber pipe machine is under the refrigeration operating mode, the moisture content of air inlet side is great, therefore the fin is close to the side surface of windward side and produces the comdenstion water and be more than the air-out side far away, then Cf > Cb in this embodiment, make the air inlet side of fin 310 can form wide drainage portion, improve drainage performance.

Example two

In this embodiment, the wind speed distribution in the ducted air conditioner is shifted by adjusting the structure of the ducted air conditioner 200 system, such as the direction of the volute tongue and the wind guiding ring, the curve of the corresponding relationship between the height H of the heat exchanger and the wind speed V of the air inlet surface of the heat exchanger 1 is shown in fig. 6, the wind speed distribution in the height direction of the heat exchanger is in a four-stage form, and at this time, the position of the reference point M is still 1/2H (H is the height of the heat exchanger 310). As shown in fig. 7, in this embodiment, the air outlet contour line 311 includes a first arc segment 311A, a second arc segment 311B, a third arc segment 311C, and a fourth arc segment 311D sequentially connected along the extending direction thereof, which is a four-segment structure. At this time, the first arc segment 311A and the second arc segment 311B are located above the reference point M, the third arc segment 311C and the fourth arc segment 311D are located below the reference point M, and the curvature radii R1, R2, R3, and R4 of the first arc segment 311A, the second arc segment 311B, the third arc segment 311C, and the fourth arc segment 311D decrease in sequence. Further, 1.0< R1/R2<5.0, 1.0< R2/R3<5, 1.0< R3/R4<5.0, preferably, 600mm > R1, R4>100 mm.

In the present embodiment, the centers P1, P2, P3 and P4 of the first circular arc segment 311A, the second circular arc segment 311B, the third circular arc segment 311C and the fourth circular arc segment 311D are collinear, and similarly, the straight lines of P1, P2, P3 and P4 form an angle ψ with the horizontal plane, and 0 ° < ψ <90 °.

The air inlet contour line 312 is obtained by translating the air outlet contour line 311 to the air inlet side along the included angle psi, and the specific translation angle depends on the designed width value of the fin 310. Both top contour 313 and bottom contour 314 are horizontal lines.

The four-segment arc fin 310 still satisfies the gradually decreasing width from the top end to the bottom end thereof.

EXAMPLE III

In this embodiment, the wind speed distribution in the ducted air conditioner is shifted by adjusting the structure of the ducted air conditioner 200 system, such as the direction of the volute tongue and the wind guiding ring, the curve of the corresponding relationship between the height H of the heat exchanger and the wind speed V of the air inlet surface of the heat exchanger 1 is shown in fig. 9, the wind speed distribution in the height direction of the heat exchanger is in a five-segment type, and the position of the reference point M is 3/5H (H is the height of the heat exchanger 310). As shown in fig. 8, in this embodiment, the air outlet contour line 311 includes a first arc segment 311A, a second arc segment 311B, a third arc segment 311C, a fourth arc segment 311D, and a fifth arc segment 311E that are sequentially connected along the extending direction, that is, a five-segment structure. At this time, the first circular arc segment 311A and the second circular arc segment 311B are located above the reference point M, the third circular arc segment 311C, the fourth circular arc segment 311D, and the fifth circular arc segment 311E are located below the reference point M, and the curvature radii R1, R2, R3, R4, and R5 of the first circular arc segment 311A, the second circular arc segment 311B, the third circular arc segment 311C, the fourth circular arc segment 311D, and the fifth circular arc segment 311E are sequentially reduced. Further, 1.0< R1/R2<5.0, 1.0< R2/R3<5, 1.0< R3/R4<5, preferably, 600mm > R1, R5>100 mm.

In this embodiment, the circle centers P1, P2, P3, P4 and P5 of the first circular arc segment 311A, the second circular arc segment 311B, the third circular arc segment 311C, the fourth circular arc segment 311D and the fifth circular arc segment 311E are collinear, and likewise, the straight lines of P1, P2, P3, P4 and P5 form an included angle ψ with the horizontal plane, and 0 ° < ψ <90 °.

The five-segment arc fin 310 still satisfies the gradually decreasing width from the top end to the bottom end thereof.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An air duct machine, an indoor unit thereof comprising:

a housing;

a fan disposed in the housing;

the air outlet profile line and the air inlet profile line are both in an arc shape which is sunken from the air inlet side to the air outlet side, and the horizontal distance between the air outlet profile line and the air inlet profile line is gradually reduced from the top end to the bottom end of the fin.

2. The ducted air conditioner of claim 1,

the air outlet contour line is provided with a reference point, the reference point is the intersection point of the horizontal plane of the height position of the heat exchanger corresponding to the average value of the maximum air speed and the minimum air speed of the air inlet surface of the heat exchanger and the air outlet contour line, and the reference point is closer to the air outlet side than the top end and the bottom end of the air outlet contour line.

3. The ducted air conditioner of claim 2,

the air-out contour line includes first circular arc section, second circular arc section and the third circular arc section that connects gradually along its extending direction, first circular arc section with the second circular arc section is located the top of benchmark, the third circular arc section is located the below of benchmark, just first circular arc section the second circular arc section the radius of curvature R1, R2, R3 of third circular arc section reduce in proper order.

4. The ducted air conditioner of claim 3,

the arc length of the first arc segmentl1. The arc length of the second arc segmentl2 satisfiesl1=a*l2, wherein a = 0.2-1.0.

5. The ducted air conditioner of claim 3,

1.0< R1/R2<5.0, and 1.0< R2/R3< 5.

6. The ducted air conditioner of claim 3,

the centers of circles P1, P2 and P3 of the first circular arc section, the second circular arc section and the third circular arc section are collinear, an included angle psi is formed between a straight line where the straight line is positioned at P1, P2 and P3 and a horizontal plane, and the included angle psi is more than 0 degree and less than 90 degrees.

7. The ducted air conditioner of claim 6,

the air outlet profile line can be at least partially overlapped with the air inlet profile line after being obliquely translated towards the air inlet side, and the included angle between the oblique translation direction of the air outlet profile line and the horizontal plane is equal to the included angle psi.

8. The ducted air conditioner of claim 1,

the top contour line and the bottom contour line are horizontal lines.

9. The ducted air conditioner of claim 1,

the number of the pipe holes is gradually reduced from the top end to the bottom end of the fin.

10. The ducted air conditioner of claim 9,

the distance between the row of pipe holes closest to the air inlet contour line and the air inlet contour line is Cf, the distance between the row of pipe holes closest to the air outlet contour line and the air outlet contour line is Cb, and Cf is larger than Cb.