Ducted air conditioner and air conditioner

Abstract

The utility model provides a duct type air conditioner and an air conditioner. The duct type air conditioner comprises a shell. A fixed volute; a movable volute; and a baffle. According to the duct type air conditioner and the air conditioner, the movable volute is used for adjusting the first air outlet and the second air outlet in the fixed volute, and therefore air can be discharged from the first air outlet of the fixed volute and can also be discharged from the second air outlet of the fixed volute; meanwhile, the baffle is used for separating the air inlet of the draught fan from the first air opening or the second air opening, the working reliability of the duct type air conditioner is guaranteed, the problem that the air outlet direction of the duct type air conditioner can be adjusted only by changing the rotating direction of the draught fan in the prior art is solved, and the duct type air conditioner can obtain reliable air volume in the refrigerating mode or the heating mode; and the heat exchange efficiency of the duct type air conditioner is ensured.

Description

Technical Field

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

[0002] In some related technologies, ducted air conditioners use horizontal lateral airflow. In heating mode, the hot air is blown out horizontally. Because hot air has a lower density, it rises, and since people's heat needs are at a height of 1.6 meters or below, the hot air is difficult to deliver to the area where people are active, resulting in poor heating performance. In other related technologies, a downward airflow method is used. In cooling mode, cold air is blown directly onto people, resulting in poor comfort.

[0003] Existing technologies typically employ reverse fan rotation to achieve reverse airflow from the indoor unit, enabling it to simultaneously deliver horizontal and vertical air. However, the airflow is relatively small when the fan rotates in reverse. If the ducted air conditioner is cooling when the fan is rotating forward, it needs to rotate in reverse to heat, resulting in poor heating capacity. Similarly, if the ducted air conditioner is heating when the fan is rotating forward, it needs to rotate in reverse to cool, also resulting in poor cooling capacity. Both solutions severely impact the heat exchange efficiency of the ducted air conditioner. Utility Model Content

[0004] To address the technical problem that reverse fan rotation in existing technologies cannot guarantee the heat exchange efficiency of ducted air conditioners, a ducted air conditioner and air conditioner are provided that utilizes a movable volute to adjust the air supply direction without adjusting the fan rotation direction to ensure heat exchange efficiency.

[0005] A ducted air conditioner, comprising:

[0006] A housing, on which a first air vent and a second air vent are provided;

[0007] A fixed volute is disposed inside the housing, and the fixed volute is provided with a fan inlet, at least one first outlet and at least one second outlet, wherein the first outlet is connected to the first air outlet and the second outlet is connected to the second air outlet.

[0008] The movable volute is disposed inside the fixed volute, and the movable volute has a first working state of closing the first air outlet and opening the second air outlet, and the movable volute also has a second working state of closing the second air outlet and opening the first air outlet.

[0009] A baffle is disposed inside the housing, and the baffle has a first shielding state that isolates the fan inlet and the first air outlet, and the baffle also has a second shielding state that isolates the fan inlet and the second air outlet.

[0010] The fan inlet is located on the end face of the fixed volute, and there is a first distance between the end face of the fixed volute and the inner wall of the housing. The baffle moves within the first distance.

[0011] The cross-section of the fan inlet is circular, and the cross-section of the baffle is arc-shaped, with the arc-shaped baffle and the circular baffle arranged coaxially.

[0012] The housing has a first side plate, the first air outlet is disposed on the first side plate, the fan inlet faces the first side plate, and the projection of the fan inlet on the first side plate at least partially overlaps with the first air outlet.

[0013] The duct unit also includes a cover plate, which is disposed at the end of the baffle away from the fixed volute. The shape of the cover plate is the same as the projection of the fan inlet on the first side plate and the overlapping shape of the first air outlet. When the baffle is in the first shielding state, the cover plate is located between the fan inlet and the first air outlet.

[0014] The ducted air handling unit also includes a flow guiding structure, which is disposed inside the housing and divides the interior of the housing into at least one first air duct and at least one second air duct. The first air duct corresponds one-to-one with the first air outlet, and each first air outlet is connected to the first air outlet through the corresponding first air duct. The second air duct corresponds one-to-one with the second air outlet, and each second air outlet is connected to the second air outlet through the corresponding second air duct.

[0015] The movable volute includes a shielding part. When the movable volute is in the first working state, the shielding part shields the first air outlet and avoids the second air outlet; when the movable volute is in the second working state, the shielding part shields the second air outlet and avoids the first air outlet.

[0016] The duct air conditioner also includes a fan blade, which is rotatably disposed within the fixed volute. The cross-section of the shielding part is arc-shaped, and the thickness of the shielding part gradually increases along the rotation direction of the fan blade.

[0017] The minimum gap between the shielding part and the fan blade is a1, where 8mm < a1 < 15mm.

[0018] The movable volute also includes a flow guide, which is spaced apart from the shielding part. A first air outlet channel is formed between the first end of the flow guide and the second end of the shielding part, and a second air outlet channel is formed between the second end of the flow guide and the first end of the shielding part. When the movable volute is in the first working state or in the second working state, the corresponding parts of the flow guide and the fixed volute overlap each other.

[0019] The duct fan also includes a fan blade, which is rotatably disposed within the fixed volute. The cross-section of the guide section is arc-shaped, and the thickness of the guide section gradually increases along the rotation direction of the fan blade.

[0020] The minimum gap between the guide section and the fan blade is a2, 1.5a1 < a2 < 2a1, where a1 is the minimum gap between the shielding section and the fan blade.

[0021] The relationship between the central angle α corresponding to the first air outlet channel, the central angle β corresponding to the guide section, and the central angle γ corresponding to the second air outlet channel is: α+β+γ≤180°.

[0022] The line connecting the central axis of the fixed volute and the midpoint of the guide section constitutes the installation positioning line of the fixed volute. The vertical plane perpendicular to the plane where the second air outlet is located constitutes the positioning surface of the housing. The angle c between the positioning line and the positioning surface is in the range of 20°≤c≤50°.

[0023] The first air outlet is located on the bottom wall of the housing, and the second air outlet is located on the side wall of the housing; the first air outlet is connected to the outside of the housing through the side wall of the housing, and the second air outlet is connected to the outside of the housing through the bottom wall of the housing.

[0024] The fixed volute and the movable volute together form a complete volute-shaped structure.

[0025] The number of the volute-like structures is one, and the projection of the central axis of the volute-like structure onto the side wall is located on the second air outlet.

[0026] There are two second air outlets, and the projections of the two second air outlets on the side wall are located on both sides of the projection of the central axis of the volute structure on the side wall.

[0027] The ducted air handling unit has a first state in which the first air outlet serves as a return air outlet and the second air outlet serves as an air outlet, and a second state in which the first air outlet serves as an air outlet and the second air outlet serves as a return air outlet.

[0028] When the duct unit is in the first state, the movable volute is in the first working state, and the baffle is in the second shielding state.

[0029] When the duct unit is in the second state, the movable volute is in the second working state, and the baffle is in the first shielding state.

[0030] An air conditioner, including the aforementioned ducted unit.

[0031] The ducted air conditioner and air purifier provided by this utility model utilize a movable volute to adjust the first and second air outlets on the fixed volute. This allows the fixed volute to discharge air through the first air outlet, enabling the air conditioner to discharge air through the first air outlet. Alternatively, the fixed volute can discharge air through the second air outlet, allowing the air conditioner to discharge air through the second air outlet. Simultaneously, a baffle isolates the fan inlet from either the first or second air outlet, ensuring that the air conditioner operates at the first air outlet. When the first air inlet is used as the air inlet, gas can only flow into the fan air inlet from the second air outlet, while gas blown from the second air outlet to the second air outlet cannot reach the fan air inlet. This also ensures that when the second air outlet is used as the air inlet, gas can only flow into the fan air inlet from the second air outlet, while gas blown from the first air outlet to the first air outlet cannot reach the fan air inlet. This ensures the reliability of the ducted air conditioner and overcomes the problem in existing technologies where the air outlet direction of the ducted air conditioner can only be adjusted by changing the fan rotation direction. The ducted air conditioner can obtain reliable air volume in both cooling and heating modes, ensuring the heat exchange efficiency of the ducted air conditioner. Attached Figure Description

[0032] Figure 1 A schematic diagram of the side-discharge airflow principle of the ducted air conditioner provided in this embodiment of the utility model;

[0033] Figure 2 A schematic diagram of the bottom air outlet principle of the ducted air conditioner provided in this embodiment of the utility model;

[0034] Figure 3 A schematic diagram of the ductwork unit in its first state provided in an embodiment of this utility model;

[0035] Figure 4 This is a schematic diagram of the structure of the duct air conditioner in its first state with the bottom wall removed, as provided in an embodiment of the present invention.

[0036] Figure 5 A cross-sectional view of the duct unit in its first state as provided in this embodiment of the utility model;

[0037] Figure 6 Another cross-sectional view of the duct unit in the first state provided in this embodiment of the utility model;

[0038] Figure 7 A schematic diagram of the structure of the duct machine in the second state provided in this embodiment of the utility model;

[0039] Figure 8 A schematic diagram of the structure of the duct air conditioner in the second state with the bottom wall removed, provided for an embodiment of this utility model;

[0040] Figure 9 Another structural diagram of the duct air conditioner with the bottom wall removed when it is in the second state, as provided in this embodiment of the utility model;

[0041] Figure 10 A cross-sectional view of the ductwork unit in the second state provided in an embodiment of this utility model;

[0042] Figure 11 Another cross-sectional view of the duct unit in the second state provided in this embodiment of the utility model;

[0043] Figure 12 This is a schematic diagram of the fixed volute and mating structure provided in an embodiment of the present utility model;

[0044] Figure 13 This is a schematic diagram of the structure of the movable volute provided in an embodiment of the present utility model;

[0045] Figure 14 This is a schematic diagram of the structure of the baffle and cover plate provided in the embodiment of this utility model;

[0046] Figure 15 A schematic diagram of the volute-like structure provided in an embodiment of this utility model;

[0047] Figure 16 Another structural schematic diagram of the movable volute provided in this embodiment of the utility model;

[0048] Figure 17 A schematic diagram of the included angle c during the installation process of the volute-shaped structure provided in this embodiment of the utility model;

[0049] Figure 18 The gas flow diagram provided for the first state of the duct air conditioner in this embodiment of the utility model;

[0050] Figure 19 Another gas flow diagram provided for the first state of the duct air conditioner in this embodiment of the present invention;

[0051] Figure 20 The gas flow diagram provided for the second state of the duct air conditioner in this embodiment of the utility model;

[0052] Figure 21Another gas flow diagram for the ducted air conditioner in its second state, provided as an embodiment of this utility model;

[0053] In the picture:

[0054] 1. Housing; 11. First air outlet; 12. Second air outlet; 2. Fixed volute; 21. Fan inlet; 22. First air outlet; 23. Second air outlet; 3. Movable volute; 4. Baffle; 5. Cover plate; 61. First air duct; 62. Second air duct; 31. Shielding part; 7. Fan blade; 32. Air guide part; 33. First air outlet channel; 34. Second air outlet channel. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0056] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0057] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0058] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] Existing technologies typically employ fan reversal to achieve reverse airflow, enabling the indoor unit to simultaneously deliver horizontal and vertical air. However, the airflow is relatively small when the fan reverses. If the ducted air conditioner is cooling when the fan is rotating forward, it needs to reverse to heat, resulting in poor heating capacity. Similarly, if the ducted air conditioner is heating when the fan is rotating forward, it needs to reverse to cool, also resulting in poor cooling capacity. Both solutions severely impact the heat exchange efficiency of the ducted air conditioner. Therefore, this application provides a method... Figures 1 to 21The ducted air conditioner shown includes: a housing 1, on which a first air outlet 11 and a second air outlet 12 are provided; a fixed volute 2, which is disposed within the housing 1 and is provided with a fan inlet 21, at least one first air outlet 22 and at least one second air outlet 23, wherein the first air outlet 22 communicates with the first air outlet 11 and the second air outlet 23 communicates with the second air outlet 12; a movable volute 3, which is disposed within the fixed volute 2 and has a first working state of closing the first air outlet 22 and opening the second air outlet 23, and a second working state of closing the second air outlet 23 and opening the first air outlet 22; and a baffle 4, which is disposed within the housing 1 and has a first shielding state of separating the fan inlet 21 and the first air outlet 11, and a second shielding state of separating the fan inlet 21 and the second air outlet 12. The movable volute 3 is used to adjust the first air outlet 22 and the second air outlet 23 on the fixed volute 2, so that the fixed volute 2 can discharge air from the first air outlet 22, allowing the gas to be blown towards the first air outlet 11, thus enabling the ducted air unit to discharge air through the first air outlet 11. Alternatively, the fixed volute 2 can discharge air from the second air outlet 23, allowing the gas to be blown towards the second air outlet 12, thus enabling the ducted air unit to discharge air through the second air outlet 12. Simultaneously, a baffle 4 is used to isolate the fan inlet 21 from either the first air outlet 11 or the second air outlet 12, ensuring that the first air outlet 11 serves as the inlet. When the air outlet is open, the gas can only flow into the fan inlet 21 through the first air outlet 11, while the gas blown from the second air outlet 23 to the second air outlet 12 cannot reach the fan inlet 21. This also ensures that when the second air outlet 12 is used as the air inlet, the gas can only flow into the fan inlet 21 through the second air outlet 12, while the gas blown from the first air outlet 22 to the first air outlet 11 cannot reach the fan inlet 21. This ensures the reliability of the ducted air conditioner and overcomes the problem in the prior art that the air outlet direction of the ducted air conditioner can only be adjusted by changing the fan rotation. The ducted air conditioner can obtain reliable air volume in both cooling and heating modes, ensuring the heat exchange efficiency of the ducted air conditioner.

[0061] In one embodiment, the fan inlet 21 is disposed on the end face of the fixed volute 2. There is a first gap between the end face of the fixed volute 2 and the inner wall of the housing 1. The baffle 4 moves within the first gap. By moving the baffle 4 within the first gap, the baffle 4 can move on both sides of the fan inlet 21. Since the fixed volute 2 is located inside the housing 1, the first air outlet 11 and the second air outlet 12 will be located on both sides of the fixed volute 2. The movement of the baffle 4 on both sides of the fan inlet 21 can achieve the isolation between the fan inlet 21 and the first air outlet 11, as well as the isolation between the fan inlet 21 and the second air outlet 12, ensuring the air intake reliability of the ducted air conditioner, and thus ensuring the working reliability of the ducted air conditioner. In either the first or second shielding state, the edge of the baffle 4 near the fixed volute 2 is sealed to the corresponding part of the fixed volute 2, while the edge of the baffle 4 away from the fixed volute 2 is sealed to the inner wall of the housing 1. This ensures the effective isolation of the baffle 4 between the fan inlet 21 and the first air outlet 11 or the second air outlet 12, guaranteeing the reliability of the ducted air conditioner. Preferably, a mating structure is provided inside the housing 1, located within the first gap, allowing the baffle 4 to abut against the mating structure, thereby improving the isolation effect of the baffle 4.

[0062] Optionally, the cross-section of the fan inlet 21 is circular, and the cross-section of the baffle 4 is arc-shaped, with the arc shape coaxial with the circular shape. By setting the baffle 4 to an arc shape, the baffle 4 can rotate around the axis of the circle, reducing the volume of the baffle 4 and the clearance area required during movement, thus reducing the volume and space occupied by the ducted air conditioner and improving the user experience. To ensure the sealing effect between the baffle 4 and the fixed volute 2, and to ensure reliable rotation of the baffle 4 on the fixed volute 2, a circular ring is provided at one end of the baffle 4 near the fixed volute 2. The circular ring contacts and engages with the edge of the fan inlet 21, further improving the isolation effect of the baffle 4.

[0063] The housing 1 has a first side plate, and the first air outlet 11 is disposed on the first side plate. The fan inlet 21 faces the first side plate, and the projection of the fan inlet 21 on the first side plate at least partially overlaps with the first air outlet 11. By aligning the first air outlet 11 with at least part of the fan inlet 21, the flow rate through the first air outlet 11 to the fan inlet 21 can be increased, thereby improving the working efficiency of the fan corresponding to the fixed volute 2. Preferably, the first air outlet 11 is located on the rear side of the first side plate, so that the fixed volute 2 can also be disposed at the rear of the housing 1. This allows for the placement of heat exchangers and other related structures at the front of the housing 1, further reducing the volume and space occupied by the ducted air conditioner and improving the user experience of the ducted air conditioner.

[0064] Since there is an overlap between the fan inlet 21 and the first air outlet 11, in order to ensure the isolation effect between the fan inlet 21 and the first air outlet 11, the duct unit also includes a cover plate 5. The cover plate 5 is disposed at the end of the baffle 4 away from the fixed volute 2, and the shape of the cover plate 5 is the same as the projection of the fan inlet 21 on the first side plate and the overlapping shape of the first air outlet 11. When the baffle 4 is in the first shielding state, the cover plate 5 is located between the fan inlet 21 and the first air outlet 11. The cover plate 5 and the baffle 4 work together to isolate the fan inlet 21 and the first air outlet 11, ensuring the working reliability of the duct unit. When the baffle 4 is in the second shielding state, the cover plate 5 moves with the baffle 4 into the housing 1. At this time, the cover plate 5 can fit against the inner wall of the housing 1, further improving the isolation effect between the second air outlet 12 and the fan inlet 21, and further ensuring the working reliability of the duct unit.

[0065] The ducted air conditioner also includes a flow guiding structure disposed within the housing 1. This flow guiding structure divides the interior of the housing 1 into at least one first air duct 61 and at least one second air duct 62. Each first air duct 61 corresponds to a first air outlet 22, and each first air outlet 22 is connected to a first air outlet 11 via a corresponding first air duct 61. Similarly, each second air outlet 23 corresponds to a second air outlet 23, and each second air outlet 23 is connected to a second air outlet 12 via a corresponding second air duct 62. The first air duct 61 guides the airflow from the first air outlet 22, allowing the gas to flow smoothly to the first air outlet 11, reducing flow resistance within the housing 1 and improving the airflow efficiency of the ducted air conditioner. Likewise, the second air duct 62 guides the airflow from the second air outlet 23, allowing the gas to flow smoothly to the first air outlet 11, reducing flow resistance within the housing 1 and improving the airflow efficiency of the ducted air conditioner.

[0066] Preferably, the airflow guiding structure includes multiple airflow guiding plates. All airflow guiding plates are arranged inside the housing 1 to form a first air duct 61 or a second air duct 62. The airflow guiding plates can also block the gap between the fixed volute 2 and the housing 1, ensuring that the airflow entering the housing 1 can only flow through the fan corresponding to the fixed volute 2, thus ensuring the reliability of the duct machine.

[0067] The movable volute 3 includes a shielding part 31. When the movable volute 3 is in the first working state, the shielding part 31 shields the first air outlet 22 and avoids the second air outlet 23; when the movable volute 3 is in the second working state, the shielding part 31 shields the second air outlet 23 and avoids the first air outlet 22. By using the shielding part 31 to shield all first air outlets 22 or all second air outlets 23 simultaneously, the reliability of adjusting the air outlet direction of the fan corresponding to the fixed volute 2 is ensured.

[0068] The ducted air conditioner also includes a fan blade 7, which is rotatably mounted inside the fixed volute 2. The shielding portion 31 has an arc-shaped cross-section, and its thickness gradually increases along the rotation direction of the fan blade 7. By increasing the thickness of the shielding portion 31, the rectification effect of the gas inside the fixed volute 2 is improved, the air outlet effect of the fan corresponding to the fixed volute 2 is improved, and thus the heat exchange efficiency of the ducted air conditioner is guaranteed.

[0069] The minimum gap between the shielding part 31 and the fan blade 7 is a1, where 8mm < a1 < 15mm. When a1 ≤ 8mm, the gap between the shielding part 31 and the fan blade 7 is too small, and errors in the movement and shape of the shielding part 31, as well as the rotational error of the fan blade 7, will cause interference between the shielding part 31 and the fan blade 7, resulting in damage to the fan blade 7. When a1 ≥ 15mm, the gap between the shielding part 31 and the fan blade 7 is too large, resulting in poor airflow rectification within the fixed volute 2 and failing to improve the airflow effect. Only when 8mm < a1 < 15mm can the structural reliability between the shielding part 31 and the fan blade 7 be guaranteed, and the airflow rectification effect of the shielding part 31 also be guaranteed.

[0070] The movable volute 3 further includes a guide section 32, which is spaced apart from the shielding section 31. A first air outlet channel 33 is formed between the first end of the guide section 32 and the second end of the shielding section 31, and a second air outlet channel 34 is formed between the second end of the guide section 32 and the first end of the shielding section 31. When the movable volute 3 is in the first working state or in the second working state, the guide section 32 overlaps with the corresponding part of the fixed volute 2. The airflow within the fixed volute 2 is further rectified by the guide section 32, thereby improving the air outlet effect of the fixed volute 2. Simultaneously, the guide section 32 overlaps with the corresponding portion of the fixed volute 2, preventing the guide section 32 from obstructing the first air outlet 22 or the second air outlet 23, ensuring the reliability of the air outlet of the fixed volute 2. When the movable volute 3 switches to the first working state, the first air outlet channel 33 and the second air outlet channel 34 are respectively connected to the corresponding second air outlet 23. The guide section 32 is located on the fixed volute 2 between the two second air outlets 23. Part of the airflow is discharged from the second air outlet 23 at the first end of the guide section 32, while the remaining airflow flows through the guide section 32. After 2, the air is discharged from the second air outlet 23 at the second end. The airflow is further rectified by the guide section 32 to improve the air outlet effect of the duct machine. Similarly, when the movable volute 3 switches to the second working state, the first air outlet channel 33 and the second air outlet channel 34 are connected to the corresponding second air outlet 23. The guide section 32 is located on the fixed volute 2 between the two first air outlets 22. Part of the airflow is discharged from the first air outlet 22 at the first end of the guide section 32, and the remaining airflow flows through the guide section 32 and is discharged from the first air outlet 22 at the second end. The airflow is further rectified by the guide section 32 to improve the air outlet effect of the duct machine.

[0071] The ducted air conditioner also includes a fan blade 7, which is rotatably mounted inside the fixed volute 2. The cross-section of the guide section 32 is arc-shaped, and its thickness gradually increases along the rotation direction of the fan blade 7. By increasing the thickness of the guide section 32, the rectification effect of the gas inside the fixed volute 2 is improved, the air outlet effect of the fan corresponding to the fixed volute 2 is improved, and thus the heat exchange efficiency of the ducted air conditioner is guaranteed.

[0072] The minimum gap between the guide section 32 and the fan blade 7 is a2, where 1.5a1 < a2 < 2a1, and a1 is the minimum gap between the shielding section 31 and the fan blade 7. When a2 is too small, the gap between the guide section 32 and the fan blade 7 is too small, and errors in the movement and shape of the guide section 32, as well as the rotation error of the fan blade 7, will cause interference between the guide section 32 and the fan blade 7, resulting in damage to the fan blade 7. When a2 is too large, the gap between the guide section 32 and the fan blade 7 is too large, resulting in poor airflow rectification within the fixed volute 2 and an inability to improve the airflow effect. Only when 1.5a1 < a2 < 2a1 can the structural reliability between the guide section 32 and the fan blade 7 be guaranteed, and the airflow rectification effect of the guide section 32 also be guaranteed.

[0073] The relationship between the central angle α corresponding to the first air outlet duct 33, the central angle β corresponding to the guide section 32, and the central angle γ corresponding to the second air outlet duct 34 is: α + β + γ ≤ 180°. At this time, the central angle corresponding to the opposite shielding section 31 is > 180°, thus enabling the shielding section 31 to simultaneously shield all first air outlets 22 or all second air outlets 23, ensuring the reliability of the duct unit. Here, α, β, and γ can be equal or unequal.

[0074] The line connecting the central axis of the fixed volute 2 and the midpoint of the guide section 32 constitutes the installation positioning line of the fixed volute 2. A vertical plane perpendicular to the plane containing the second air outlet 12 constitutes the positioning surface of the housing 1. The angle c between the positioning line and the positioning surface ranges from 20° to 50°. When installing the fixed volute 2, first determine the installation positioning line of the fixed volute 2 and the positioning surface of the housing 1. Then, deflect the installation positioning line relative to the positioning surface by an angle c. This achieves the goal of distributing the two second air outlets 23 on both sides of the central axis of the fixed volute 2, thereby ensuring the airflow effect of the second air outlet 12.

[0075] The first air vent 11 is located on the bottom wall of the housing 1, and the second air vent 12 is located on the side wall of the housing 1. When the first air vent 11 is used as a return air vent, the indoor unit achieves bottom return air and side air outlet, realizing horizontal blowing of cold air and avoiding the discomfort caused by direct blowing of cold air; when the second air vent 12 is used as a return air vent, it achieves side return air and bottom air outlet, realizing downward blowing of hot air and improving the heating effect.

[0076] Specifically, the ducted air conditioner has a first state in which the first air outlet 11 serves as a return air outlet and the second air outlet 12 serves as an air outlet, and a second state in which the first air outlet 11 serves as an air outlet and the second air outlet 12 serves as a return air outlet.

[0077] When the ducted air conditioner is in the first state, the movable volute 3 is in the first working state and the baffle 4 is in the second shielding state. At this time, the movable volute 3 closes the first air outlet 22 and opens the second air outlet 23. At the same time, the baffle 4 isolates the second air outlet 12 and the fan inlet 21. The airflow entering the housing 1 through the first air outlet 11 flows to the fan inlet 21 and then flows through the second air outlet 23 to the second air outlet 12. At this time, the ducted air conditioner returns air from below and exits air laterally, so as to achieve flat blowing of cold air and avoid the discomfort caused by direct blowing of cold air.

[0078] When the ducted air conditioner is in the second state, the movable volute 3 is in the second working state, and the baffle 4 is in the first shielding state. At this time, the movable volute 3 closes the second air outlet 23 and opens the first air outlet 22. At the same time, the baffle 4 isolates the first air outlet 11 and the fan inlet 21. The airflow entering the housing 1 through the second air outlet 12 flows to the fan inlet 21 and then flows through the first air outlet 22 to the first air outlet 11. At this time, the ducted air conditioner returns air to the side and exits air from the bottom, realizing hot air blowing downward and improving the heating effect.

[0079] Alternatively, the first air outlet 22 can be connected to the outside of the housing 1 via the side wall of the housing 1 to achieve horizontal blowing of cold air and avoid the discomfort caused by direct blowing of cold air; the second air outlet 23 can be connected to the outside of the housing 1 via the bottom wall of the housing 1 to achieve downward blowing of hot air and improve the heating effect.

[0080] The fixed volute 2 and the movable volute 3 together form a complete volute-shaped structure. By forming a complete volute-shaped structure with the fixed volute 2, the working efficiency of the duct fan is ensured. Preferably, the volute-shaped structure and the fan blades 7 together constitute a centrifugal fan.

[0081] The number of the volute-shaped structure is one, and the projection of the central axis of the volute-shaped structure onto the side wall is located on the second air outlet 12. At this time, the central axis of the volute-shaped structure is parallel to the vertical direction, and the volute-shaped structure is centrally located, so that the two second air outlets 23 on the fixed volute 2 can supply air to different parts of the second air outlet 12 respectively, ensuring the air outlet effect of the second air outlet 12. Specifically, the number of the second air outlets 23 is two, and the projections of the two second air outlets 23 onto the side wall are located on both sides of the projection of the central axis of the volute-shaped structure onto the side wall. That is, the installation positioning line is deflected relative to the positioning surface at an angle c, thus achieving the purpose of distributing the two second air outlets 23 on both sides of the central axis of the fixed volute 2, thereby ensuring the air outlet effect of the second air outlet 12.

[0082] An air conditioner, including the aforementioned ducted unit.

[0083] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A ducted air conditioner, characterized in that: include: A housing (1), wherein a first air vent (11) and a second air vent (12) are provided on the housing (1); A fixed volute (2) is disposed inside the housing (1), and the fixed volute (2) is provided with a fan inlet (21), at least one first air outlet (22) and at least one second air outlet (23), the first air outlet (22) being connected to the first air outlet (11) and the second air outlet (23) being connected to the second air outlet (12); The movable volute (3) is disposed inside the fixed volute (2), and the movable volute (3) has a first working state of closing the first air outlet (22) and opening the second air outlet (23), and the movable volute (3) also has a second working state of closing the second air outlet (23) and opening the first air outlet (22). A baffle (4) is disposed inside the housing (1), and the baffle (4) has a first shielding state that separates the fan inlet (21) and the first air outlet (11), and the baffle (4) also has a second shielding state that separates the fan inlet (21) and the second air outlet (12).

2. The duct air conditioner according to claim 1, characterized in that: The fan inlet (21) is located on the end face of the fixed volute (2), and there is a first gap between the end face of the fixed volute (2) and the inner wall of the housing (1), and the baffle (4) moves within the first gap.

3. The duct air conditioner according to claim 2, characterized in that: The cross-section of the fan inlet (21) is circular, and the cross-section of the baffle (4) is arc-shaped, with the arc-shaped baffle and the circular baffle arranged coaxially.

4. The duct air conditioner according to claim 2, characterized in that: The housing (1) has a first side plate, the first air vent (11) is disposed on the first side plate, the fan inlet (21) faces the first side plate, and the projection of the fan inlet (21) on the first side plate at least partially overlaps with the first air vent (11).

5. The duct air conditioner according to claim 4, characterized in that: The duct unit also includes a cover plate (5), which is disposed at the end of the baffle (4) away from the fixed volute (2). The shape of the cover plate (5) is the same as the projection of the fan inlet (21) on the first side plate and the overlapping shape of the first air outlet (11). When the baffle (4) is in the first shielding state, the cover plate (5) is located between the fan inlet (21) and the first air outlet (11).

6. The duct air conditioner according to claim 1, characterized in that: The duct unit also includes a flow guiding structure, which is disposed inside the housing (1) and divides the interior of the housing (1) into at least one first air duct (61) and at least one second air duct (62). The first air duct (61) corresponds one-to-one with the first air outlet (22), and each first air outlet (22) is connected to the first air outlet (11) through the corresponding first air duct (61). The second air duct (62) corresponds one-to-one with the second air outlet (23), and each second air outlet (23) is connected to the second air outlet (12) through the corresponding second air duct (62).

7. The duct air conditioner according to claim 1, characterized in that: The movable volute (3) includes a shielding part (31). When the movable volute (3) is in the first working state, the shielding part (31) shields the first air outlet (22) and avoids the second air outlet (23). When the movable volute (3) is in the second working state, the shielding part shields the second air outlet (23) and avoids the first air outlet (22).

8. The duct air conditioner according to claim 7, characterized in that: The duct machine also includes a fan blade (7), which is rotatably disposed in the fixed volute (2). The shielding part (31) has an arc-shaped cross section, and the thickness of the shielding part (31) gradually increases along the rotation direction of the fan blade (7).

9. The duct air conditioner according to claim 8, characterized in that: The minimum gap between the shielding part (31) and the fan blade (7) is a1, where 8mm < a1 < 15mm.

10. The duct air conditioner according to claim 7, characterized in that: The movable volute (3) further includes a guide section (32), which is spaced apart from the shielding section (31). A first air outlet channel (33) is formed between the first end of the guide section (32) and the second end of the shielding section (31), and a second air outlet channel (34) is formed between the second end of the guide section (32) and the first end of the shielding section (31). When the movable volute (3) is in the first working state or in the second working state, the corresponding parts of the guide section (32) and the fixed volute (2) overlap each other.

11. The duct air conditioner according to claim 10, characterized in that: The duct machine also includes a fan blade (7), which is rotatably disposed in the fixed volute (2). The cross-section of the guide section (32) is arc-shaped, and the thickness of the guide section (32) gradually increases along the rotation direction of the fan blade (7).

12. The duct air conditioner according to claim 11, characterized in that: The minimum gap between the guide section (32) and the fan blade (7) is a2, 1.5a1 < a2 < 2a1, where a1 is the minimum gap between the shielding section (31) and the fan blade (7).

13. The duct air conditioner according to claim 10, characterized in that: The relationship between the central angle α of the first air outlet channel (33), the central angle β of the guide section (32), and the central angle γ of the second air outlet channel (34) is: α+β+γ≤180°.

14. The duct air conditioner according to claim 10, characterized in that: The line connecting the central axis of the fixed volute (2) and the midpoint of the guide section (32) constitutes the installation positioning line of the fixed volute (2). The vertical plane perpendicular to the plane where the second air outlet (12) is located constitutes the positioning surface of the housing (1). The angle c between the positioning line and the positioning surface is in the range of 20°≤c≤50°.

15. The duct air conditioner according to claim 1, characterized in that: The first air vent (11) is located on the bottom wall of the housing (1), and the second air vent (12) is located on the side wall of the housing (1); the first air outlet (22) is connected to the outside of the housing (1) through the side wall of the housing (1), and the second air outlet (23) is connected to the outside of the housing (1) through the bottom wall of the housing (1).

16. The duct air conditioner according to claim 15, characterized in that: The fixed volute (2) and the movable volute (3) together form a complete volute-shaped structure.

17. The duct air conditioner according to claim 16, characterized in that: The number of the volute-like structures is one, and the projection of the central axis of the volute-like structure onto the side wall is located on the second air outlet (12).

18. The duct air conditioner according to claim 17, characterized in that: The number of the second air outlets (23) is two, and the projections of the two second air outlets (23) on the side wall are located on both sides of the projection of the central axis of the volute structure on the side wall.

19. The duct air conditioner according to claim 1, characterized in that: The duct air conditioner has a first state in which the first air outlet (11) serves as a return air outlet and the second air outlet (12) serves as an air outlet, and a second state in which the first air outlet (11) serves as an air outlet and the second air outlet (12) serves as a return air outlet. When the duct machine is in the first state, the movable volute (3) is in the first working state, and the baffle (4) is in the second shielding state; When the duct machine is in the second state, the movable volute (3) is in the second working state, and the baffle (4) is in the first shielding state.

20. An air conditioner, characterized in that: The ductwork unit includes any one of claims 1 to 19.

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