Air conditioner

Abstract

The utility model relates to the technical field of air conditioners, in particular to an air conditioner which comprises a shell, a heat exchanger and a centrifugal fan, the shell is provided with a cavity, an air inlet and an air outlet are formed in the shell and communicate with the cavity, the air inlet is formed in the lower end of the shell, and the air outlet is formed in the upper end of the shell; the heat exchanger is arranged in the cavity and comprises a first section and a second section which are connected with each other, an included angle is formed between the extending direction of the first section and the extending direction of the second section on the section orthogonal to the length direction of the shell, the centrifugal fan is arranged in the cavity, and the axial direction of the centrifugal fan is parallel to the length direction of the shell. At least part of the centrifugal fan is located between the first section and the second section of the heat exchanger, air inlets are formed in the two ends, in the axial direction, of the centrifugal fan, the air supply pressure of the air conditioner is large, the air supply distance is long, the problem of direct blowing to people can be effectively avoided, and the user experience is improved.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioner technology, specifically to an air conditioner. Background Technology

[0002] Air conditioners regulate indoor air temperature. As people's living standards improve, they place higher demands on the comfort of air conditioning. In related technologies, air conditioners include a casing and a cross-flow fan. The casing has an air inlet and an air outlet, and the cross-flow fan, located inside the casing, evenly distributes the heat-exchanged air inside the casing through the air outlet to the entire room.

[0003] However, the air conditioners in this technology have a short air delivery distance and blow air directly onto people, which reduces the user experience. Utility Model Content

[0004] This disclosure aims to at least partially address one of the technical problems in the related art. To this end, embodiments of this disclosure propose an air conditioner with high air pressure and a long air delivery distance, which can effectively avoid the problem of direct airflow onto people and improve the user experience.

[0005] An air conditioner according to an embodiment of this disclosure includes: a housing having a chamber, an air inlet and an air outlet on the housing, both of which communicate with the chamber, the air inlet being located at the lower end of the housing and the air outlet being located at the upper end of the housing; a heat exchanger disposed within the chamber and comprising a first segment and a second segment connected to each other, wherein the extension directions of the first segment and the second segment form an angle in a cross section orthogonal to the length direction of the housing; and a centrifugal fan disposed within the chamber, the axial direction of the centrifugal fan being parallel to the length direction of the housing, at least a portion of the centrifugal fan being located between the first and second segments of the heat exchanger, and air inlets being provided at both ends of the centrifugal fan in the axial direction.

[0006] The air conditioner of this embodiment features a centrifugal fan installed inside the cavity, with at least a portion of the centrifugal fan positioned between the first and second sections of a heat exchanger. This arrangement allows at least a portion of the centrifugal fan's inlet to be located between the first and second sections. Since the extension directions of the first and second sections of the heat exchanger form an angle, the airflow exiting the heat exchanger can more smoothly enter the centrifugal fan. Under the action of the centrifugal fan, the airflow is accelerated and pressurized, increasing the static pressure and kinetic energy of the airflow. This, in turn, improves the air pressure and delivery distance of the air conditioner. Furthermore, the airflow exits from the upper outlet after passing through the centrifugal fan, effectively preventing direct airflow onto people and improving the user experience.

[0007] In some embodiments, the centrifugal fan includes a volute and a fan wheel, the fan wheel is disposed inside the volute, the air inlet is disposed at both ends of the volute along its axial direction, the volute has an air outlet channel extending in the front-rear direction, the front end of the air outlet channel is an air outlet, and the air outlet is located at the air outlet.

[0008] In some embodiments, in the cross-section of the centrifugal fan, the air outlet channel includes a first wall and a second wall located above the first wall. Both the first wall and the second wall extend in a rear-to-forward direction and are arranged at a downward inclination. The angle between the first wall and the inner top surface of the chamber is greater than the angle between the second wall and the inner top surface of the chamber.

[0009] In some embodiments, the housing includes a front panel, the air outlet is located at the upper end of the front panel, the front side of the front panel is arranged to be inclined backward in a direction from top to bottom, and the front end face of the air outlet is coplanar with the front end face of the air outlet.

[0010] In some embodiments, the outer diameter of the impeller is R1, the chamber has two sides arranged opposite to each other in the length direction of the housing, and the shortest distance between the end face of the centrifugal fan in its axial direction and the side face of the chamber in the length direction of the chamber is L1, and 0.5R1≤L1≤2R1.

[0011] In some embodiments, the inner diameter of the wind turbine is R2, and 0.8 ≤ R2 / R1 ≤ 0.9.

[0012] In some embodiments, the first segment is disposed adjacent to the front side of the housing, the vertical distance between the center of the impeller and the first segment is L2, and 1.25R1≤L2≤2R1; and / or, the second segment is disposed adjacent to the rear side of the housing, the vertical distance between the center of the impeller and the second segment is L3, and 1.4R1≤L3≤2.5R1; and / or, the heat exchanger has a lowest position at the connection between the first segment and the second segment, the distance between the center of the impeller and the lowest position is L4, and 2R1≤L4≤3R1.

[0013] In some embodiments, the distance between the center of the impeller and the inner top surface of the chamber is L5, 1.3R1≤L5≤2R1; and / or, the air outlet is located on the front side of the housing, and the distance between the center of the impeller and the rear side of the chamber is L6, 1.5R1≤L6≤2.5R1.

[0014] In some embodiments, the chamber has a length of L7 in the length direction of the housing, and the centrifugal fan has a length of L8 in the length direction of the housing, wherein 1.5L8≤L7≤2.5L8; and / or, the minimum distance between the centrifugal fan and the heat exchanger is L9, where L9≥20mm.

[0015] In some embodiments, the air conditioner further includes a water collection tray disposed in the cavity and below the heat exchanger; and / or, the air conditioner further includes an air inlet grille disposed at the air inlet. Attached Figure Description

[0016] Figure 1 This is an exploded schematic diagram of an air conditioner according to an embodiment of this disclosure.

[0017] Figure 2 This is a cross-sectional view of an air conditioner according to an embodiment of this disclosure.

[0018] Figure 3 This is a cross-sectional view of an air conditioner according to an embodiment of this disclosure.

[0019] Figure 4 This is a schematic diagram of a wind turbine according to an embodiment of the present disclosure.

[0020] Figure label:

[0021] Air conditioner 100,

[0022] Shell 1, chamber 11, side 111, inner top surface 112, rear side 113.

[0023] Air inlet 12, air outlet 13, front panel 14

[0024] Heat exchanger 2, first section 21, second section 22,

[0025] Centrifugal fan 3, air inlet 31, volute 32, air outlet 321, first wall surface 3211, second wall surface 3212, air outlet 322, impeller 33.

[0026] 4. Water tray, 5. Air inlet grille, 6. Base. Detailed Implementation

[0027] Embodiments of this disclosure are described in detail below, with examples of these embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting it.

[0028] The air conditioner 100 of this embodiment includes a housing 1, a heat exchanger 2, and a centrifugal fan 3. The housing 1 has a chamber 11, and an air inlet 12 and an air outlet 13 are provided on the housing 1. Both the air inlet 12 and the air outlet 13 communicate with the chamber 11. The air inlet 12 is located at the lower end of the housing 1, and the air outlet 13 is located at the upper end of the housing 1. The heat exchanger 2 is disposed within the chamber 11 and includes a first section 21 and a second section 22 connected to each other, in a direction orthogonal to the length of the housing 1 (e.g., ...). Figure 3 On the cross section (shown in the left-right direction), the extension direction of the first segment 21 and the extension direction of the second segment 22 form an angle. The centrifugal fan 3 is located in the chamber 11, and the axial direction of the centrifugal fan 3 is parallel to the length direction of the shell 1. At least a part of the centrifugal fan 3 is located between the first segment 21 and the second segment 22 of the heat exchanger 2. Both ends of the centrifugal fan 3 in the axial direction are provided with air inlets 31.

[0029] External airflow can enter the chamber 11 through the air inlet 12 and exchange heat through the heat exchanger 2. The heat-exchanged airflow enters the centrifugal fan 3 through the air inlets 31 at both ends of the centrifugal fan 3. Under the action of the centrifugal fan 3, the heat-exchanged airflow is accelerated and pressurized and blown to the air outlet 13 for discharge.

[0030] Specifically, such as Figures 1-3 As shown, the air inlet 12 is located at the lower end of the housing 1 and the opening direction is downward, while the air outlet 13 is located at the upper end of the housing 1 and the opening direction is forward. In other words, the air conditioner 100 is an air conditioner 100 with air inlet at the bottom and air outlet at the top. Air enters the chamber 11 of the housing 1 through the lower air inlet 12 and exchanges heat with the heat exchanger 2 before being discharged through the upper air outlet 13.

[0031] The first section 21 of the heat exchanger 2 is located in front of the second section 22 of the heat exchanger 2. The first section 21 extends from top to bottom and is arranged to the rear at an angle. The second section 22 extends from top to bottom and is arranged to the front at an angle. The lower end of the first section 21 is connected to the lower end of the second section 22. The top end of the first section 21 is higher than the top end of the second section 22. In the projection plane orthogonal to the left and right directions of the shell 1, the cross section of the heat exchanger 2 is V-shaped and the V-shape opens upward. The tip of the heat exchanger 2 is arranged downward, which facilitates the airflow entering the chamber 11 through the lower air inlet 12 to exchange heat with the heat exchanger 2. Moreover, the V-shaped heat exchanger 2 can increase the contact area between the airflow and the wall of the heat exchanger 2 and improve the heat exchange efficiency.

[0032] Centrifugal fan 3 is located inside chamber 11 and above heat exchanger 2. The lower end of centrifugal fan 3 is located inside the V-shaped opening of heat exchanger 2. Centrifugal fan 3 extends in the left and right directions. Both the left and right ends of centrifugal fan 3 are provided with air inlets 31, so that the airflow after passing through heat exchanger 2 can enter the centrifugal fan 3 through the left and right air inlets 31.

[0033] Optionally, the air conditioner 100 also includes a base 6 on which the heat exchanger 2 is mounted.

[0034] The air conditioner 100 of this embodiment of the present disclosure provides a centrifugal fan 3 in the chamber 11, with at least a portion of the centrifugal fan 3 positioned between the first section 21 and the second section 22 of the heat exchanger 2. This allows at least a portion of the air inlet 31 of the centrifugal fan 3 to be located between the first section 21 and the second section 22. Since the extension direction of the first section 21 and the extension direction of the second section 22 of the heat exchanger 2 form an angle, the airflow flowing out of the heat exchanger 2 can more smoothly enter the centrifugal fan 3. The airflow is accelerated and pressurized under the action of the centrifugal fan 3, which increases the static pressure and kinetic energy of the airflow, thereby increasing the air supply pressure and air supply distance of the air conditioner 100. Moreover, after passing through the centrifugal fan 3, the airflow flows out from the upper air outlet 13, which can effectively prevent the airflow from blowing directly on people and improve the user experience.

[0035] Furthermore, by placing the lower end of the centrifugal fan 3 between the first section 21 and the second section 22 of the heat exchanger 2, the flow path of the airflow from the heat exchanger 2 to the centrifugal fan 3 can be shortened on the one hand, and the space inside the casing 1 can be fully utilized to set the centrifugal fan 3 to a larger size, thereby increasing the air volume.

[0036] In some embodiments, the centrifugal fan 3 includes a volute 32 and a fan wheel 33. The fan wheel 33 is disposed inside the volute 32. The air inlet 31 is disposed at both ends of the volute 32 in the axial direction. The volute 32 has an air outlet channel 321 extending in the front-rear direction. The front end of the air outlet channel 321 is an air outlet 322, which is located at the air outlet 13.

[0037] Specifically, such as Figures 1-2 As shown, the air inlet 31 is located at the left and right ends of the volute 32. The airflow enters the volute 32 through the left and right air inlets 31. After being accelerated by the impeller 33, the airflow enters the air outlet channel 321. The air outlet channel 321 extends from back to front, and the front end of the air outlet channel 321 forms the air outlet 322. By connecting the air outlet 322 with the air outlet 13, the airflow in the volute 32 can flow out through the air outlet 322 and the air outlet 13 in sequence.

[0038] In some embodiments, such as Figures 1-2As shown, in the cross-section of the centrifugal fan 3, the air outlet channel 321 includes a first wall surface 3211 and a second wall surface 3212 located above the first wall surface 3211. Both the first wall surface 3211 and the second wall surface 3212 extend in a direction from back to front and are arranged downwardly. The angle between the first wall surface 3211 and the inner top surface 112 of the chamber 11 is greater than the angle between the second wall surface 3212 and the inner top surface 112 of the chamber 11. By setting both the first wall surface 3211 and the second wall surface 3212 to extend from back to front and be arranged downwardly, the airflow is prevented from blowing directly onto the ceiling or wall, which facilitates the diffusion of the airflow from the air outlet 13. By setting the downward tilt angle of the first wall surface 3211 to be greater than that of the second wall surface 3212, the flow area of ​​the air outlet channel 321 gradually increases from back to front, forming a gradually expanding channel. In other words, the vertical distance between the first wall surface 3211 and the second wall surface 3212 gradually increases from back to front, and the airflow velocity gradually decreases in the gradually expanding channel, thereby pressurizing the airflow and increasing the air pressure and air delivery distance of the air conditioner 100.

[0039] In some embodiments, the housing 1 includes a front panel 14, an air outlet 13 is disposed at the upper end of the front panel 14, the front side 111 of the front panel 14 is arranged to be inclined backward in the direction from top to bottom, and the front end face of the air outlet 322 is coplanar with the front end face of the air outlet 13.

[0040] Specifically, such as Figures 1-2 As shown, the front panel 14 is located at the front end of the housing 1, and the front side 111 of the front panel 14 forms the front end face of the housing 1. The front side 111 of the front panel 14 extends from top to bottom and is arranged to tilt backward, such that the upper end of the front side 111 of the front panel 14 is located in front of the lower end of the front side 111 of the front panel 14.

[0041] By setting an air outlet 13 with a forward opening at the upper end of the front panel 14 and making the front end face of the air outlet 13 and the air outlet 322 coplanar, the airflow from the air outlet channel 321 can flow directly out through the air outlet 13. A portion of the airflow will flow downwards along the extension direction of the front side 111 of the front panel 14. The further down the airflow flows, the further back it goes, making it easier to flow downwards and land on the ground. This also increases the distance the airflow travels on the ground.

[0042] In some embodiments, the outer diameter of the impeller 33 is R1, the chamber 11 has two sides 111 arranged opposite to each other in the length direction of the housing 1, and the shortest distance between the end face of the centrifugal fan 3 in its axial direction and the side face 111 of the chamber 11 in the length direction of the chamber 11 is L1, and 0.5R1≤L1≤2R1.

[0043] Specifically, such as Figures 3-4As shown, the left end of the cavity is the left side face 111, and the right end of the cavity is the right side face 111. The centrifugal fan 3 has a left end face and a right end face on its axial direction. By limiting the shortest distance between the left end face and the left side face 111 and the shortest distance between the right end face and the right side face 111, L1 is not too small, which would increase the airflow resistance and affect the efficiency of the centrifugal fan 3. At the same time, L1 is not too large, which would increase the size of the air conditioner 100 in the left and right directions. By limiting the relationship between L1 and R1, the airflow is ensured to enter the centrifugal fan 3 smoothly, thereby improving the operating efficiency of the centrifugal fan 3.

[0044] In some embodiments, such as Figure 4 As shown, the inner diameter of the impeller 33 is R2, and 0.8 ≤ R2 / R1 ≤ 0.9. When the ratio of the inner diameter to the outer diameter of the impeller 33 is large, the air pressure increases, but the air volume decreases; when the ratio of the inner diameter to the outer diameter of the impeller 33 is small, the air volume increases, but the air pressure decreases. By limiting the ratio of the inner diameter to the outer diameter of the impeller 33, it is convenient to limit the air volume and air pressure, thereby improving the efficiency of the centrifugal fan 3.

[0045] In some embodiments, such as Figure 2 As shown, the first segment 21 is located near the front side of the casing 1. The vertical distance between the center of the impeller 33 and the first segment 21 is L2, and 1.25R1≤L2≤2R1. If L2 is too small, excessive resistance will be generated between the centrifugal fan 3 and the first segment 21, affecting the smooth flow of air. If L2 is too large, the flow path from the first segment 21 to the air inlet 31 of the centrifugal fan 3 increases, affecting the heat exchange efficiency. By limiting the relationship between L2 and R1, the smooth flow of air into the centrifugal fan 3 is ensured, thereby improving the efficiency of the centrifugal fan 3.

[0046] In some embodiments, such as Figure 2 As shown, the second segment 22 is located near the rear side of the casing 1. The vertical distance between the center of the impeller 33 and the second segment 22 is L3, and 1.4R1≤L3≤2.5R1. If L3 is too small, excessive resistance will be generated between the centrifugal fan 3 and the second segment 22, affecting the smooth flow of air. If L3 is too large, the flow path from the second segment 22 to the air inlet 31 of the centrifugal fan 3 increases, affecting the heat exchange efficiency. By limiting the relationship between L3 and R1, the smooth flow of air into the centrifugal fan 3 is ensured, thereby improving the efficiency of the centrifugal fan 3.

[0047] In some embodiments, such as Figure 2As shown, heat exchanger 2 has its lowest position at the connection between the first section 21 and the second section 22. The distance between the center of the impeller 33 and the lowest position is L4, where 2R1≤L4≤3R1. If L4 is too small, the airflow resistance between the centrifugal fan 3 and the heat exchanger 2 increases, affecting the smooth flow of air. If L4 is too large, the power of the centrifugal fan 3 needs to be increased. By limiting the relationship between L4 and R1, the smooth flow of air is ensured while improving the efficiency of the centrifugal fan 3.

[0048] In some embodiments, such as Figure 2 As shown, the distance between the center of the impeller 33 and the inner top surface 112 of the chamber 11 is L5, where 1.3R1≤L5≤2R1. By limiting the relationship between L5 and R1, we avoid L5 being too small, which would easily cause interference between the centrifugal fan 3 and the casing 1, and at the same time, we avoid L5 being too large, which would increase airflow resistance and thus affect the efficiency of the centrifugal fan 3.

[0049] In some embodiments, such as Figure 2 As shown, the air outlet 13 is located on the front side 111 of the housing 1. The distance between the center of the impeller 33 and the rear side 113 of the chamber 11 is L6, where 1.5R1≤L6≤2.5R1. If L6 is too large, the airflow is prone to turbulence between the centrifugal fan 3 and the rear side 113. If L6 is too small, the resistance of the airflow between the centrifugal fan 3 and the rear side 113 increases. By limiting the relationship between L6 and R1, the airflow is ensured to enter the centrifugal fan 3 smoothly, while the resistance of the airflow between the centrifugal fan 3 and the rear side 113 is reduced, thereby improving the air supply efficiency of the air conditioner 100.

[0050] In some embodiments, such as Figure 3 As shown, the dimension of chamber 11 along the length of housing 1 is L7, and the dimension of centrifugal fan 3 along the length of housing 1 is L8, where 1.5L8≤L7≤2.5L8. By limiting the relationship between L7 and L8, a certain air intake distance is ensured between the left air inlet 31 and the left side 111 of chamber 11, and between the right air inlet 31 and the right side 111, ensuring smooth airflow into centrifugal fan 3 while reducing airflow resistance.

[0051] In some embodiments, such as Figure 2As shown, the minimum distance between the centrifugal fan 3 and the heat exchanger 2 is L9, where L9 ≥ 20 mm. Since the first section 21 is located in front of the second section 22, and the top of the first section 21 is higher than the top of the second section 22, with the top of the first section 21 located below the volute tongue of the volute 32, the minimum distance between the centrifugal fan 3 and the heat exchanger 2 is formed between the volute 32 and the first section 21. By limiting L9, interference between the centrifugal fan 3 and the heat exchanger 2 is avoided, preventing abnormal noise. Simultaneously, it ensures smooth airflow between the centrifugal fan 3 and the heat exchanger 2, improving the efficiency of the centrifugal fan 3.

[0052] In some embodiments, such as Figure 1 and Figure 2 As shown, the air conditioner 100 also includes a water collection tray 4, which is located inside the chamber 11 and below the heat exchanger 2. Since the surface temperature of the heat exchanger 2 is lower than the dew point temperature of the surrounding air when it is operating, water vapor in the air will condense into water droplets on the surface of the heat exchanger 2, forming condensate. By providing the water collection tray 4 below the heat exchanger 2, the condensate on the heat exchanger 2 can be easily collected, preventing the condensate from flowing out through the air inlet 12.

[0053] In some embodiments, such as Figure 1 and 2 As shown, the air conditioner 100 also includes an air inlet grille 5, which is located at the air inlet 12. The air inlet grille 5 facilitates the guidance of airflow while preventing foreign objects from entering the housing 1 through the air inlet 12, thus improving safety.

[0054] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0057] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] It is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. An air conditioner (100) characterized by, include: The housing (1) has a chamber (11), and the housing (1) is provided with an air inlet (12) and an air outlet (13). The air inlet (12) and the air outlet (13) are both connected to the chamber (11). The air inlet (12) is located at the lower end of the housing (1), and the air outlet (13) is located at the upper end of the housing (1). Heat exchanger (2), which is disposed in the chamber (11) and includes a first section (21) and a second section (22) connected to each other, wherein on a cross section orthogonal to the length direction of the shell (1), the extension direction of the first section (21) and the extension direction of the second section (22) form an angle; Centrifugal fan (3), the centrifugal fan (3) is located in the chamber (11), the axial direction of the centrifugal fan (3) is parallel to the length direction of the shell (1), at least part of the centrifugal fan (3) is located between the first section (21) and the second section (22) of the heat exchanger (2), and both ends of the centrifugal fan (3) in the axial direction are provided with air inlets (31).

2. The air conditioner (100) according to claim 1, characterized in that The centrifugal fan (3) includes a volute (32) and a fan wheel (33). The fan wheel (33) is located inside the volute (32). The air inlet (31) is located at both ends of the volute (32) in the axial direction. The volute (32) has an air outlet channel (321) extending in the front-back direction. The front end of the air outlet channel (321) is an air outlet (322), which is located at the air outlet (13).

3. The air conditioner (100) according to claim 2, characterized in that In the cross-section of the centrifugal fan (3), the air outlet channel (321) includes a first wall surface (3211) and a second wall surface (3212) located above the first wall surface (3211). Both the first wall surface (3211) and the second wall surface (3212) extend from back to front and are arranged downwardly. The angle between the first wall surface (3211) and the inner top surface (112) of the chamber (11) is greater than the angle between the second wall surface (3212) and the inner top surface (112) of the chamber (11).

4. The air conditioner (100) according to claim 2, characterized in that, The housing (1) includes a front panel (14), the air outlet (13) is located at the upper end of the front panel (14), the front side (111) of the front panel (14) is arranged to tilt backward in the direction from top to bottom, and the front end face of the air outlet (322) is coplanar with the front end face of the air outlet (13).

5. The air conditioner (100) of claim 2, wherein, The outer diameter of the impeller (33) is R1, the chamber (11) has two sides (111) arranged opposite to each other in the length direction of the housing (1), the shortest distance between the end face of the centrifugal fan (3) in its axial direction and the side face (111) of the chamber (11) in the length direction of the chamber (11) is L1, and 0.5R1≤L1≤2R1.

6. The air conditioner (100) according to claim 5, characterized in that The inner diameter of the wind turbine (33) is R2, and 0.8≤R2 / R1≤0.

9.

7. The air conditioner (100) of claim 5, wherein, The first segment (21) is disposed adjacent to the front side of the housing (1), and the vertical distance between the center of the impeller (33) and the first segment (21) is L2, and 1.25R1≤L2≤2R1; and / or, The second segment (22) is disposed adjacent to the rear side of the housing (1), and the vertical distance between the center of the impeller (33) and the second segment (22) is L3, and 1.4R1≤L3≤2.5R1; and / or, The heat exchanger (2) has a lowest position at the connection between the first section (21) and the second section (22), and the distance between the center of the impeller (33) and the lowest position is L4, 2R1≤L4≤3R1.

8. The air conditioner (100) according to claim 5, characterized in that, The distance between the center of the impeller (33) and the inner top surface (112) of the chamber (11) is L5, 1.3R1≤L5≤2R1; and / or, The air outlet (13) is located on the front side (111) of the housing (1), and the distance between the center of the impeller (33) and the rear side (113) of the chamber (11) is L6, 1.5R1≤L6≤2.5R1.

9. The air conditioner (100) according to any one of claims 1 to 8, characterized in that The chamber (11) has a length dimension of L7 along the length of the housing (1), and the centrifugal fan (3) has a length dimension of L8 along the length of the housing (1), wherein 1.5L8≤L7≤2.5L8; and / or, The minimum distance between the centrifugal fan (3) and the heat exchanger (2) is L9, where L9 ≥ 20 mm.

10. The air conditioner (100) according to any one of claims 1 to 8, characterized in that It also includes a water receiving tray (4), which is disposed within the chamber (11) and located below the heat exchanger (2); and / or, The air conditioner (100) also includes an air inlet grille (5), which is located at the air inlet (12).

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