Air conditioner

Abstract

The utility model discloses an air conditioner, include: casing, heat exchanger subassembly and air duct subassembly. The rear side of casing forms the air inlet, and the front side of casing forms the air outlet, air duct subassembly is located in the casing and is located between the air outlet and heat exchanger subassembly, and air duct subassembly includes a plurality of air duct parts that are sequentially spaced along the up-down direction, and each air duct part includes an air duct volute and a centrifugal fan wheel arranged in the air duct volute, at least one side of the air duct volute in the up-down direction forms the airflow inlet, and the front side of the air duct volute forms the airflow outlet, and the airflow outlet faces the air outlet and communicates with the air outlet. According to the air conditioner of the utility model embodiment, the air conditioner can have a large air volume, and the performance of the air conditioner is improved. Moreover, compared with the use of a cross-flow fan wheel, the use of a plurality of centrifugal fan wheels arranged along the up-down direction can reduce the height dimension of the whole machine in the up-down direction under the condition that the maximum air volume is the same, save space, and facilitate the carrying or placing of the air conditioner.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning, and in particular to an air conditioner. Background Technology

[0002] In related technologies, cross-flow fans are typically used to drive airflow in order to ensure sufficient air volume in air conditioners. However, the cross-flow fans used in air conditioners are relatively long in the vertical direction, resulting in a larger overall height of the air conditioner, occupying more space, and potentially causing inconvenience in moving and placing the air conditioner. Therefore, improvements are needed. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide an air conditioner that includes multiple air duct components arranged sequentially and at intervals along the vertical direction, with each air duct component including a centrifugal impeller. This allows the multiple centrifugal impellers to drive airflow, increasing the air volume driven by the impellers and thus enabling the air conditioner to have a larger air volume and improve its performance. Furthermore, compared to using a cross-flow impeller, using multiple centrifugal impellers arranged vertically can reduce the overall height of the unit in the vertical direction while maintaining the same maximum air volume, saving space and facilitating the handling or placement of the air conditioner.

[0004] An air conditioner according to an embodiment of the present invention includes: a housing, wherein an air inlet is formed on the rear side of the housing and an air outlet is formed on the front side of the housing; a heat exchanger assembly disposed within the housing; and a duct assembly disposed within the housing and located between the air outlet and the heat exchanger assembly. The duct assembly includes a plurality of duct components arranged sequentially at intervals in a vertical direction. Each duct component includes a duct volute and a centrifugal impeller disposed within the duct volute. The rotation axis of the centrifugal impeller extends in a vertical direction. At least one side of the duct volute in the vertical direction has an airflow inlet, and the front side of the duct volute has an airflow outlet facing the air outlet and communicating with the air outlet.

[0005] According to the embodiment of the present invention, the air conditioner includes multiple air duct components arranged sequentially and spaced apart in the vertical direction, and each air duct component includes a centrifugal impeller. This allows multiple centrifugal impellers to drive airflow, increasing the air volume driven by the impellers and thus enabling the air conditioner to have a larger air volume and improve its performance. Furthermore, compared to using a cross-flow impeller, using multiple centrifugal impellers arranged vertically can reduce the overall height of the unit in the vertical direction while maintaining the same maximum air volume, saving space and facilitating the handling or placement of the air conditioner.

[0006] According to some embodiments of the present invention, airflow inlets are formed on both the upper and lower sides of the duct casing, and multiple air intake spaces are formed inside the casing at intervals along the vertical direction. The duct component is located between two adjacent air intake spaces, and the air intake space connects the air inlet and the airflow inlet.

[0007] According to some embodiments of this utility model, the distance between two adjacent air duct volutes in the vertical direction is greater than 100mm.

[0008] According to some embodiments of this utility model, the distance between two adjacent air duct volutes in the vertical direction is less than 300mm.

[0009] According to some embodiments of this utility model, the distance between the lower edge of the air outlet and the bottom surface of the housing in the vertical direction is L1, the height of the housing in the vertical direction is H, and the ratio of L1 to H is greater than 0.5.

[0010] According to some embodiments of this utility model, the distance between the lower edge of the air outlet and the bottom surface of the housing in the vertical direction is L1, and L1 is greater than 1000mm.

[0011] According to some embodiments of the present invention, the cross-section of the housing is rectangular, and the air outlet is located on the front side of the housing.

[0012] According to some embodiments of the present invention, a connecting bracket is connected between two adjacent air duct volutes.

[0013] According to some embodiments of the present invention, the upper and lower ends of the connecting bracket are respectively connected to the airflow outlet end of the air duct volute.

[0014] According to some embodiments of the present invention, the air outlet is provided with an air guiding assembly, the air guiding assembly includes a rotatable air guiding plate, and the rotation axis of the air guiding plate extends in the vertical direction.

[0015] According to some embodiments of the present invention, there are multiple air guide plates, and the multiple air guide plates are arranged in a left-right direction.

[0016] According to some embodiments of the present invention, there are two air duct components, and the centrifugal impellers of the two air duct components share a motor, with the motor located between the two centrifugal impellers.

[0017] According to some embodiments of the present invention, a connecting bracket is connected between the two air duct volutes, and the connecting bracket is located on the front side of the motor.

[0018] According to some embodiments of the present invention, an air inlet space is defined between the two air duct volutes, and the airflow inlet is located on one side of each adjacent air duct volute. The motor is located within the air inlet space, and the distance between the motor and the two adjacent air duct volutes in the vertical direction is greater than 5 mm.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the indoor unit of an air conditioner according to some embodiments of the present utility model;

[0022] Figure 2 yes Figure 1 Exploded view of the indoor unit of the air conditioner in the picture;

[0023] Figure 3 yes Figure 1 A cross-sectional view of the indoor unit of the air conditioner;

[0024] Figure 4 yes Figure 1 A cross-sectional view of the indoor unit of the air conditioner from another angle;

[0025] Figure 5 yes Figure 1 A schematic diagram of the air duct components.

[0026] Figure label:

[0027] 100. Air conditioner indoor unit;

[0028] 10. Housing; 11. Air inlet; 12. Air outlet; 13. Air intake space; 14. Air guide assembly; 15. Air guide plate;

[0029] 20. Heat exchanger assembly;

[0030] 30. Duct assembly; 31. Duct component; 32. Duct volute; 33. Centrifugal impeller; 34. Airflow inlet; 35. Airflow outlet; 36. Connecting bracket;

[0031] 40. Electric motor. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] The following is for reference. Figures 1-5 This invention describes an air conditioner according to an embodiment of the present invention.

[0034] The air conditioner according to an embodiment of the present utility model, with reference to... Figures 1-5 It includes: housing 10, heat exchanger assembly 20 and air duct assembly 30.

[0035] An air inlet 11 is formed on the rear side of the casing 10, and an air outlet 12 is formed on the front side of the casing 10. A heat exchanger assembly 20 is disposed inside the casing 10, and an air duct assembly 30 is disposed inside the casing 10 and located between the air outlet 12 and the heat exchanger assembly 20. When the air conditioner is operating, the fan rotates around its rotation axis, driving air to enter the casing 10 from the air inlet 11 on the rear side of the casing 10. After the airflow passes through the heat exchanger assembly 20 and exchanges heat with it, the fan drives the airflow to flow along the air duct, and finally flows out into the room through the air outlet 12 on the front side of the casing 10, thereby regulating the indoor temperature.

[0036] For example, the air conditioner is a split-type floor-standing air conditioner, which includes an indoor unit 100 and an outdoor unit. The indoor unit 100 includes the aforementioned casing 10, heat exchanger assembly 20, and air duct assembly 30, and the rotation axis of the fan wheel extends in the vertical direction.

[0037] The air duct assembly 30 includes multiple air duct components 31 arranged sequentially and spaced apart in the vertical direction. Each air duct component 31 includes an air duct casing 32 and a centrifugal impeller 33 disposed within the air duct casing 32. The rotation axis of the centrifugal impeller 33 extends in the vertical direction. By including multiple air duct components 31 arranged sequentially and spaced apart in the vertical direction in the air conditioner, and each air duct component 31 including a centrifugal impeller 33, the multiple centrifugal impellers 33 can drive the airflow, increase the air volume driven by the impellers, increase the air volume of the air conditioner, and improve the performance of the air conditioner. Furthermore, by using centrifugal impellers 33, compared with using cross-flow impellers, the vertical height of the air conditioner can be reduced while maintaining the same maximum air volume, saving space and facilitating the handling or placement of the air conditioner.

[0038] An airflow inlet 34 is formed on at least one side of the duct casing 32 in the vertical direction, and an airflow outlet 35 is formed on the front side of the duct casing 32. The airflow outlet 35 faces the air outlet 12 and is connected to the air outlet 12. After the airflow entering the casing 10 exchanges heat with the heat exchanger assembly 20, it enters the duct casing 32 from the airflow inlet 34, is accelerated by the centrifugal impeller 33, flows out of the duct casing 32 from the airflow outlet 35, and flows to the air outlet 12, and is discharged into the room through the air outlet 12.

[0039] For example, an airflow inlet 34 is formed on the upper side of the duct volute 32, and an airflow outlet 35 is formed on the front side of the duct volute 32. When the centrifugal impeller 33 is working, the centrifugal impeller 33 drives the airflow to enter the vicinity of the centrifugal impeller 33 from the airflow inlet 34 on the upper side of the duct volute 32, i.e., in the axial direction of the centrifugal impeller 33. The airflow is then thrown out by the centrifugal impeller 33 along the radial direction of the centrifugal impeller 33, leaves the centrifugal impeller 33 from the airflow outlet 35, and leaves the air conditioner from the air outlet 12.

[0040] For example, an airflow inlet 34 is formed on the lower side of the duct volute 32, and an airflow outlet 35 is formed on the front side of the duct volute 32. When the centrifugal impeller 33 is working, the centrifugal impeller 33 drives the airflow to enter the vicinity of the centrifugal impeller 33 from the airflow inlet 34 on the lower side of the duct volute 32, i.e., in the axial direction of the centrifugal impeller 33. The airflow is then thrown out by the centrifugal impeller 33 along the radial direction of the centrifugal impeller 33, leaves the centrifugal impeller 33 from the airflow outlet 35, and leaves the air conditioner from the air outlet 12.

[0041] For example, airflow inlets 34 are formed on the upper and lower sides of the duct volute 32, and airflow outlets 35 are formed on the front side of the duct volute 32. When the centrifugal impeller 33 is working, the centrifugal impeller 33 drives the airflow to enter the vicinity of the centrifugal impeller 33 from the two airflow inlets 34 on the upper and lower sides of the duct volute 32, and then throws it out radially along the centrifugal impeller 33, leaving the centrifugal impeller 33 from the airflow outlet 35, and leaving the air conditioner from the air outlet 12.

[0042] For example, an air conditioner includes an air outlet 12, and multiple air outlets 35 on the duct casing 32 are connected to the air outlet 12.

[0043] For example, an air conditioner includes two air outlets 12, which are arranged at intervals in the vertical direction. At least a portion of the air duct volute 32 has an air outlet 35 connected to the upper air outlet 12, and at least a portion of the air duct volute 32 has an air outlet 35 connected to the lower air outlet 12.

[0044] For example, an air conditioner includes multiple air outlets 12, which are arranged at intervals in the vertical direction. The number of air outlets 12 is the same as the number of air duct components 31 and they correspond one-to-one. The air outlet 35 of each air duct component 31 faces the corresponding air outlet 12 and is connected to the corresponding air outlet 12.

[0045] According to the embodiment of the present invention, the air conditioner includes multiple air duct components 31 arranged sequentially and spaced apart in the vertical direction, and each air duct component 31 includes a centrifugal impeller 33. The multiple centrifugal impellers 33 can drive the airflow, increase the air volume driven by the impellers, and make the air conditioner have a larger air volume, thereby improving the performance of the air conditioner. Moreover, compared with the use of a cross-flow impeller, the use of multiple centrifugal impellers 33 arranged vertically can reduce the height of the whole unit in the vertical direction while maintaining the same maximum air volume, saving space and making it easier to move or place the air conditioner.

[0046] According to some embodiments of this utility model, refer to Figures 2-4 Airflow inlets 34 are formed on both the upper and lower sides of the duct casing 32. Multiple air intake spaces 13 are arranged at intervals along the vertical direction within the casing 10. The duct component 31 is located between two adjacent air intake spaces 13, and the air intake space 13 connects the air inlet 11 and the airflow inlet 34. By forming airflow inlets 34 on both the upper and lower sides of the duct casing 32, the airflow entering a single duct component 31 can be increased, improving the utilization rate of a single centrifugal impeller 33, thereby increasing the airflow of the air conditioner and improving its performance. Furthermore, by positioning the duct component 31 between two adjacent air intake spaces 13, the duct component 31 can simultaneously drive the airflow in both upper and lower air intake spaces 13, increasing the airflow through the duct component 31 and improving the performance of the air conditioner.

[0047] According to some embodiments of this utility model, refer to Figure 3 The vertical distance between two adjacent air duct volutes 32 is 'a', which is greater than 100mm. By making the vertical distance 'a' between two adjacent air duct volutes 32 greater than 100mm, there is sufficient space between the two adjacent air duct volutes 32 as an air intake space 13, which can more fully increase the air volume entering the air duct component 31 and improve the performance of the air conditioner.

[0048] According to some embodiments of this utility model, refer to Figure 3 The vertical distance between two adjacent air duct volutes 32 is 'a', which is less than 300mm. By making the vertical distance 'a' between two adjacent air duct volutes 32 less than 300mm, the overall length of the air duct assembly 30 in the vertical direction can be appropriately shortened while ensuring sufficient air intake, thus avoiding the air conditioner's excessive length in the vertical direction, which is detrimental to the miniaturization of the air conditioner.

[0049] For example, the value of 'a' can be 120mm, 150mm, 200mm, 250mm, 270mm, etc.

[0050] According to some embodiments of this utility model, refer to Figure 1 The vertical distance between the lower edge of the air outlet 12 and the bottom surface of the casing 10 is L1, and the vertical height of the casing 10 is H. The ratio of L1 to H is greater than 0.5. For example, the ratio of L1 to H can be 0.55, 0.6, 0.65, 0.7, etc. By making the ratio of L1 to H greater than 0.5, the air outlet 12 can be positioned higher, preventing the air blown from the air outlet 12 from blowing directly onto the legs and enhancing the user experience.

[0051] For example, the ratio of L1 to H ranges from 0.5 to 0.7. By making the ratio of L1 to H greater than 0.5, the position of the air outlet 12 can be made higher, avoiding the air blowing directly onto the legs and enhancing the user experience; by making the ratio of L1 to H less than 0.7, the air volume blown by the air conditioner can be more sufficient, avoiding the air outlet 12 being too small and thus reducing the air volume of the air conditioner.

[0052] According to some embodiments of this utility model, refer to Figure 1 The vertical distance between the lower edge of the air outlet 12 and the bottom surface of the casing 10 is L1, and L1 is greater than 1000mm. For example, the value of L1 can be 1100mm, 1200mm, 1300mm, 1400mm, etc. By making the value of L1 greater than 1000mm, the air outlet 12 can be positioned higher, which can more effectively regulate the temperature of the user's upper body, making the user more comfortable; and it also avoids the air blown from the air outlet 12 blowing directly on the legs, enhancing the user experience.

[0053] According to some embodiments of this utility model, refer to Figure 1 The casing 10 has a rectangular cross-section, and the air outlet 12 is located on the front side of the casing 10. Since air conditioners are usually placed in the corner of a user's room, the front side of the air conditioner is close to the room. By placing the air outlet 12 on the front side of the casing 10, the air conditioner can concentrate the airflow to the front side, increasing the air conditioner's ability to regulate the temperature of the front side.

[0054] According to some embodiments of this utility model, refer to Figure 3 and Figure 5 A connecting bracket 36 connects two adjacent air duct volutes 32. By connecting two adjacent air duct volutes 32 with the connecting bracket 36, the structural strength of the overall air duct assembly 30 can be improved.

[0055] According to some embodiments of this utility model, refer to Figure 3 and Figure 5The upper and lower ends of the connecting bracket 36 are respectively connected to the airflow outlet 35 of the duct volute 32. The upper end of the connecting bracket 36 is connected to the airflow outlet 35 of the upper duct volute 32, and the lower end of the connecting bracket 36 is connected to the airflow outlet 35 of the lower duct volute 32. By connecting the upper and lower ends of the connecting bracket 36 to the airflow outlet 35 of the duct volute 32, the structural strength of the airflow outlet 35 of the duct volute 32 can be enhanced, the deformation of the airflow outlet 12 can be reduced, interference between the connecting bracket 36 and other components inside the air conditioner can be avoided, and the influence of the connecting bracket 36 on the airflow flowing into the duct volute 32 through the airflow inlet 34 can be reduced or avoided.

[0056] Optionally, the connecting bracket 36 can be a connecting plate, which is placed in the vertical direction and can be approximately parallel to the horizontal direction.

[0057] According to some embodiments of this utility model, refer to Figure 2 An air guide assembly 14 is provided inside the air outlet 12. The air guide assembly 14 includes a rotatable air guide plate 15, and the rotation axis of the air guide plate 15 extends in the vertical direction. By providing the air guide assembly 14 inside the air outlet 12, the air guide assembly 14 can guide the airflow, allowing the airflow to flow along the air guide plate 15; by making the air guide plate 15 rotatable, the air guide plate 15 can adjust the direction of the airflow at the air outlet 12.

[0058] For example, the rotation axis of the air guide plate 15 extends in the vertical direction, and the air guide plate 15 can swing in the left and right direction when working, so as to adjust the air outlet in the left and right direction.

[0059] According to some embodiments of this utility model, refer to Figure 2 There are multiple air guide plates 15, which are arranged in a left-right direction. By having multiple air guide plates 15 arranged in a left-right direction, the airflow can be guided by the air guide plates 15 in both the left and right directions, thus making the air guide effect of the air guide plates 15 more effective.

[0060] According to some embodiments of this utility model, refer to Figure 5There are two air duct components 31, and the centrifugal impellers 33 of the two air duct components 31 share a single motor 40, which is located between the two centrifugal impellers 33. By using two air duct components 31, costs can be reduced while ensuring that the air conditioner has a sufficiently large air volume, and the overall height of the unit can be reduced. By having the centrifugal impellers 33 of the two air duct components 31 share a single motor 40, which is located between the two centrifugal impellers 33, one motor 40 can drive both impellers to rotate, reducing the number of motors 40 and lowering costs. Furthermore, the motor 40 can make full use of the space between the two centrifugal impellers 33 and the vertical space within the casing 10, resulting in a compact structure and further reducing the overall height of the unit.

[0061] According to some embodiments of this utility model, refer to Figure 5 A connecting bracket 36 connects the two duct housings 32, and the connecting bracket 36 is located on the front side of the motor 40. By connecting the two duct housings 32 with the connecting bracket 36, the strength of the overall duct assembly 30 can be improved; and by placing the connecting bracket 36 on the front side of the motor 40, the space in the front-rear direction inside the housing 10 can be fully utilized, making the layout of the connecting bracket 36 and the motor 40 reasonable, resulting in a compact structure, and also reducing the impact of the connecting bracket 36 on the airflow.

[0062] According to some embodiments of this utility model, refer to Figure 3 and Figure 5 An air inlet space 13 is defined between the two air duct volutes 32. Each air duct volute 32 has an airflow inlet 34 on one side adjacent to the other. The motor 40 is located within the air inlet space 13. In the vertical direction, the distances between the motor 40 and the two adjacent air duct volutes 32 are b1 and b2, respectively, both greater than 5 mm. For example, the value of b1 can be 6 mm, 10 mm, 15 mm, 20 mm, 22 mm, etc., and the value of b2 can be 6 mm, 10 mm, 15 mm, 20 mm, 22 mm, etc. By having airflow inlets 34 on one side of each of the two duct volutes 32 adjacent to each other, the space between the two duct volutes 32 can be fully utilized to increase the air intake volume. By ensuring that the vertical distance between the motor 40 and the two adjacent duct volutes 32 is greater than 5mm, there can be sufficient space between the duct volutes 32 and the motor 40 for air intake, which can further increase the air volume entering the duct component 31 and improve the performance of the air conditioner. Furthermore, interference between the motor 40 and the duct volutes 32 can be avoided more effectively.

[0063] The following reference Figures 1-5 This invention describes an air conditioner according to some specific embodiments of the present invention.

[0064] In this embodiment, the air conditioner is a split-type floor-standing air conditioner, which includes an indoor unit 100 and an outdoor unit, wherein the indoor unit 100 is a floor-standing air conditioner. The air conditioner includes: a casing 10, a heat exchanger assembly 20, and an air duct assembly 30.

[0065] An air inlet 11 is formed on the rear side of the casing 10, and an air outlet 12 is formed on the front side of the casing 10. A heat exchanger assembly 20 is disposed within the casing 10, and a duct assembly 30 is disposed within the casing 10 and located between the air outlet 12 and the heat exchanger assembly 20. The duct assembly 30 includes multiple duct components 31 arranged sequentially and spaced apart along a vertical direction. Each duct component 31 includes a duct casing 32 and a centrifugal impeller 33 disposed within the duct casing 32, with the rotation axis of the centrifugal impeller 33 extending vertically. At least one side of the duct casing 32 in the vertical direction has an airflow inlet 34, and the front side of the duct casing 32 has an airflow outlet 35 facing and communicating with the air outlet 12.

[0066] Airflow inlets 34 are formed on both the upper and lower sides of the duct volute 32. Multiple air intake spaces 13 are formed within the housing 10, spaced at intervals along the vertical direction. The duct component 31 is located between two adjacent air intake spaces 13, and the air intake space 13 connects the air inlet 11 and the airflow inlet 34. The vertical distance between two adjacent duct volutes 32 is 'a', where 'a' is greater than 100mm and less than 300mm. The vertical distance between the lower edge of the outlet 12 and the bottom surface of the housing 10 is 'L1'. The vertical height of the housing 10 is 'H', where the ratio of L1 to H is greater than 0.5 and L1 is greater than 1000mm. The housing 10 has a rectangular cross-section, and the outlet 12 is located on the front side of the housing 10.

[0067] A connecting bracket 36 is connected between two adjacent air duct volutes 32, and the upper and lower ends of the connecting bracket 36 are respectively connected to the airflow outlet 35 of the air duct volute 32.

[0068] An air guide assembly 14 is provided inside the air outlet 12. The air guide assembly 14 includes a rotatable air guide plate 15. The rotation axis of the air guide plate 15 extends in the vertical direction. There are multiple air guide plates 15, which are arranged in the horizontal direction.

[0069] There are two air duct components 31, and the centrifugal impellers 33 of the two air duct components 31 share a single motor 40, which is located between the two centrifugal impellers 33. A connecting bracket 36 connects the two air duct casings 32, and the connecting bracket 36 is located in front of the motor 40. An air inlet space 13 is defined between the two air duct casings 32, and each of the two air duct casings 32 has an airflow inlet 34 on its adjacent side. The motor 40 is located within the air inlet space 13. In the vertical direction, the distances between the motor 40 and the two adjacent air duct casings 32 are b1 and b2, respectively, both of which are greater than 20 mm.

[0070] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0071] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0072] In the description of this utility model, "multiple" means two or more.

[0073] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0074] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

[0076] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that, include: The housing has an air inlet on its rear side and an air outlet on its front side. The heat exchanger assembly is located inside the housing; A duct assembly is disposed within the housing and located between the air outlet and the heat exchanger assembly. The duct assembly includes a plurality of duct components arranged sequentially at intervals in the vertical direction. Each duct component includes a duct volute and a centrifugal impeller disposed within the duct volute. The rotation axis of the centrifugal impeller extends in the vertical direction. An airflow inlet is formed on at least one side of the duct volute in the vertical direction. An airflow outlet is formed on the front side of the duct volute. The airflow outlet faces the air outlet and communicates with the air outlet.

2. The air conditioner according to claim 1, characterized in that, The airflow inlet is formed on both the upper and lower sides of the air duct casing. Multiple air intake spaces are formed inside the casing at intervals along the vertical direction. The air duct component is located between two adjacent air intake spaces. The air intake space connects the air inlet and the airflow inlet.

3. The air conditioner according to claim 2, characterized in that, The vertical distance between two adjacent air duct volutes is greater than 100mm.

4. The air conditioner according to claim 3, characterized in that, The vertical distance between two adjacent air duct volutes is less than 300mm.

5. The air conditioner according to claim 1, characterized in that, The distance between the lower edge of the air outlet and the bottom surface of the housing in the vertical direction is L1, and the height of the housing in the vertical direction is H. The ratio of L1 to H is greater than 0.

5.

6. The air conditioner according to claim 1, characterized in that, The distance between the lower edge of the air outlet and the bottom surface of the housing in the vertical direction is L1, and L1 is greater than 1000mm.

7. The air conditioner according to claim 1, characterized in that, The casing has a rectangular cross-section, and the air outlet is located on the front side of the casing.

8. The air conditioner according to any one of claims 1-7, characterized in that, A connecting bracket is provided between two adjacent air duct volutes.

9. The air conditioner according to claim 8, characterized in that, The upper and lower ends of the connecting bracket are respectively connected to the airflow outlet end of the air duct volute.

10. The air conditioner according to any one of claims 1-7, characterized in that, The air outlet is equipped with an air guide assembly, which includes a rotatable air guide plate, the rotation axis of which extends in the vertical direction.

11. The air conditioner according to claim 10, characterized in that, There are multiple air guide plates, which are arranged in a left-right direction.

12. The air conditioner according to any one of claims 1-7, characterized in that, There are two air duct components, and the centrifugal impellers of the two air duct components share a motor, which is located between the two centrifugal impellers.

13. The air conditioner according to claim 12, characterized in that, A connecting bracket is connected between the two air duct volutes, and the connecting bracket is located on the front side of the motor.

14. The air conditioner according to claim 12, characterized in that, An air inlet space is defined between the two air duct volutes, and the airflow inlet is located on one side of each adjacent air duct volute. The motor is located within the air inlet space, and the distance between the motor and the two adjacent air duct volutes in the vertical direction is greater than 5 mm.

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