Ducted air conditioner and air conditioner

Abstract

The invention provides a duct type air conditioner and an air conditioner. The duct type air conditioner comprises a shell. A partition structure is arranged between every two adjacent fan assemblies of the at least two fan assemblies; the fan assembly comprises 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, so that the fixed volute outputs air through the first air outlet, and the fixed volute also outputs air through the second air outlet; 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] The invention relates to the technical field of air conditioning, in particular to an air duct unit and an air conditioner. Background Art

[0002] In some related technologies, ducted air conditioners use horizontal lateral air supply. In heating mode, the hot air is blown out horizontally. Due to the low density of hot air, the hot air floats upward, and the heat demand of people is 1.6 meters or below. The hot air is difficult to reach the human activity area, resulting in poor heating effect. In other related technologies, the downward air supply method is used. In cooling mode, the cold air blows directly on the human body, which is less comfortable.

[0003] The prior art generally adopts the method of controlling the fan to reverse to achieve the reverse air outlet of the fan, so that the indoor unit can simultaneously achieve the purpose of horizontal air supply and vertical air supply. However, the air volume is small when the fan is reversed. If the duct unit is cooling when the fan rotates forward, the fan needs to be reversed when the duct unit is heating, resulting in poor heating capacity of the duct unit. Similarly, if the duct unit is heating when the fan rotates forward, the fan needs to be reversed when the duct unit is cooling, resulting in poor cooling capacity of the duct unit. Both solutions will seriously affect the heat exchange efficiency of the duct unit. Summary of the invention

[0004] In order to solve the technical problem in the prior art that the fan reversal cannot ensure the heat exchange efficiency of the duct air conditioner, a duct air conditioner and an air conditioner are provided which utilize a movable volute to adjust the air supply direction without adjusting the fan direction to ensure the heat exchange efficiency.

[0005] A duct machine, comprising:

[0006] A housing, wherein a first air outlet and a second air outlet are provided on the housing;

[0007] At least two fan assemblies, all of which are arranged in parallel in the housing (1), and a partition structure is provided between two adjacent fan assemblies;

[0008] The fan assembly comprises:

[0009] A fixed volute, the fixed volute is arranged in the housing, and the fixed volute is provided with a fan air inlet, at least one first air outlet and at least one second air outlet, the first air outlet is communicated with the first air outlet, and the second air outlet is communicated with the second air outlet;

[0010] A movable volute, wherein the movable volute is disposed in 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;

[0011] The baffle is arranged in the shell, and the baffle has a first shielding state that separates the fan air inlet and the first air outlet, and the baffle also has a second shielding state that separates the fan air inlet and the second air outlet.

[0012] The partition structure comprises a partition plate, the edges of which are sealingly matched with the corresponding inner walls of the adjacent fixed volute and the housing.

[0013] There is a spacing between two adjacent fan assemblies, and a common air outlet is arranged on the fixed volute, and the common air outlet is connected with the spacing. When the movable volute is in the first working state or the second working state, the movable volute avoids the common air outlet, and when the movable volute is in the first working state, the common air outlet forms a second air outlet, and the partition is located between the common air outlet and the first air outlet. When the movable volute is in the second working state, the common air outlet forms a first air outlet, and the partition is located between the common air outlet and the second air outlet.

[0014] The partition structure also includes a guide plate, and there is a spacing between two adjacent fan assemblies. The first air outlet includes a first side air outlet with an airflow direction toward the spacing, and the second air outlet includes a second side air outlet with an airflow direction toward the spacing. The guide plate is arranged within the spacing, and the guide plate is located between the first side air outlets of the two fan assemblies or between the second side air outlets of the two fan assemblies.

[0015] The fan air inlet is arranged on the end surface of the fixed volute, and there is a first distance between the end surface of the fixed volute and the inner wall of the shell, and the baffle moves within the first distance.

[0016] The shell has a first side plate, the first air outlet is arranged on the first side plate, the fan air inlet faces the first side plate, and the projection of the fan air inlet on the first side plate at least partially overlaps with the first air outlet.

[0017] The fan assembly also includes a cover plate, which is arranged at an end of the baffle away from the fixed volute, and the shape of the cover plate is the same as the projection of the fan air inlet on the first side panel and the overlapping shape of the first air outlet, and when the baffle is in the first shielding state, the cover plate is located between the fan air inlet and the first air outlet.

[0018] The cross section of the fan air inlet is circular, the cross section of the baffle is arc-shaped, and the arc is coaxially arranged with the circle.

[0019] The air duct machine also includes a guide structure, which is arranged in the shell, and the guide structure divides the interior of the shell into at least one first air duct and at least one second air duct, the first air duct corresponds to the first air outlet one by one, and each of the first air outlets is connected to the first air outlet through the corresponding first air duct, the second air duct corresponds to the second air outlet one by one, and each of the second air outlets is connected to the second air outlet through the corresponding second air duct.

[0020] The movable volute includes a shielding portion. When the movable volute is in the first working state, the shielding portion shields the first air outlet and avoids the second air outlet; when the movable volute is in the second working state, the shielding portion shields the second air outlet and avoids the first air outlet.

[0021] The fan assembly also includes a fan blade, which is rotatably arranged in the fixed volute. The cross-section of the shielding portion is arc-shaped, and the thickness of the shielding portion gradually increases along the rotation direction of the fan blade.

[0022] The minimum gap between the shielding portion and the fan blade is a1, 8mm<a1<15mm.

[0023] The movable volute also includes a guide portion, which is spaced apart from the shielding portion, and a first air outlet channel is formed between the first end of the guide portion and the second end of the shielding portion, and a second air outlet channel is formed between the second end of the guide portion and the first end of the shielding portion, and when the movable volute is in the first working state or in the second working state, the guide portion overlaps with corresponding parts of the fixed volute.

[0024] The fan assembly also includes a fan blade, which is rotatably arranged in the fixed volute. The cross-section of the guide portion is arc-shaped, and the thickness of the guide portion gradually increases along the rotation direction of the fan blade.

[0025] The minimum gap between the air guide portion and the fan blade is a2, 1.5a1<a2<2a1, a1 is the minimum gap between the shielding portion and the fan blade.

[0026] The relationship between the central angle α corresponding to the first air outlet channel, the central angle β corresponding to the air guide portion, and the central angle γ corresponding to the second air outlet channel is: α+β+γ≤180°.

[0027] The line connecting the central axis of the fixed volute and the midpoint of the guide portion constitutes the installation positioning line of the fixed volute, the vertical planes perpendicular to the plane where the second air outlet is located constitute the positioning surface of the shell, and the angle c between the installation positioning line and the positioning surface of at least one fan assembly is in the range of 15°≤c≤25°.

[0028] The rotation angle d1 of the movable volute ranges from 150° to 180°; and / or the rotation angle d2 of the movable volute in the fan assembly provided with the common air outlet ranges from 110° to 130°.

[0029] The number of the fan assemblies is two, and the two fan assemblies include a left fan assembly and a right fan assembly. The airflow of at least one of the first air outlets in the left fan assembly flows through the left end of the first air outlet, the airflow of at least one of the second air outlets in the left fan assembly flows through the left end of the second air outlet, the airflow of at least one of the first air outlets in the right fan assembly flows through the right end of the first air outlet, and the airflow of at least one of the second air outlets in the right fan assembly flows through the right end of the second air outlet.

[0030] The first air vent is arranged on the bottom wall of the shell, and the second air vent is arranged on the side wall of the shell; the first air outlet is connected to the outside of the shell through the side wall of the shell, and the second air outlet is connected to the outside of the shell through the bottom wall of the shell.

[0031] The fixed volute and the movable volute together form a complete volute-shaped structure.

[0032] The duct machine has a first state in which the first air outlet is used as a return air outlet and the second air outlet is used as an outlet, and the duct machine has a second state in which the first air outlet is used as an outlet and the second air outlet is used as a return air outlet;

[0033] When the air duct machine is in the first state, the movable volute is in the first working state, and the baffle is in the second shielding state;

[0034] When the air duct dryer is in the second state, the movable volute is in the second working state, and the baffle is in the first shielding state.

[0035] An air conditioner comprises the above-mentioned duct air conditioner.

[0036] The duct machine and air conditioner provided by the present invention use a movable volute to adjust the first air outlet and the second air outlet on the fixed volute, so that the fixed volute can discharge air from the first air outlet, so that the gas can be blown to the first air outlet through the first air outlet to realize the duct machine to discharge air through the first air outlet, and the fixed volute can also be discharged from the second air outlet, so that the gas can be blown to the second air outlet through the second air outlet to realize the duct machine to discharge air through the second air outlet, and at the same time, the baffle is used to separate the fan air inlet from the first air outlet or the second air outlet, so as to ensure that the first air outlet is used as the When the air is inlet, the gas can only flow into the fan inlet from the first air inlet, while the gas blown from the second air outlet to the second air outlet cannot reach the fan inlet. It can also ensure that when the second air inlet is used as the air inlet, the gas can only flow into the fan inlet from the second air inlet, while the gas blown from the first air outlet to the first air outlet cannot reach the fan inlet, thereby ensuring the working reliability of the duct machine and overcoming the problem in the prior art that the air outlet direction of the duct machine can only be adjusted by changing the direction of the fan. The duct machine can obtain reliable air volume in both cooling mode and heating mode, thereby ensuring the heat exchange efficiency of the duct machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A side air outlet principle diagram of a duct air conditioner provided in an embodiment of the present invention;

[0038] Figure 2 A schematic diagram of the downward air outlet of the duct air conditioner provided in an embodiment of the present invention;

[0039] Figure 3 A schematic diagram of the structure of the air duct machine in a first state provided by an embodiment of the present invention;

[0040] Figure 4 A schematic structural diagram of the duct unit provided by an embodiment of the present invention when the housing is in a first state without a bottom wall;

[0041] Figure 5 A cross-sectional view of the duct unit provided by an embodiment of the present invention when in a first state;

[0042] Figure 6 Another cross-sectional view of the air duct machine provided by the embodiment of the present invention when it is in a first state;

[0043] Figure 7 A schematic diagram of the structure of the duct machine provided by an embodiment of the present invention when it is in a second state;

[0044] Figure 8 A schematic structural diagram of the duct unit provided by an embodiment of the present invention when the housing is in the second state without the bottom wall;

[0045] Fig. 9 A cross-sectional view of the air duct unit provided by an embodiment of the present invention when it is in a second state;

[0046] Fig.10 Another cross-sectional view of the duct unit provided by the embodiment of the present invention when it is in the second state;

[0047] Fig.11 A schematic diagram of the structure of a fixed volute and a portion of a housing provided in an embodiment of the present invention;

[0048] Fig.12 A schematic diagram of the structure of a movable volute provided in an embodiment of the present invention;

[0049] Fig.13 A schematic diagram of the structure of a baffle and a cover plate provided in an embodiment of the present invention;

[0050] Fig.14 A schematic diagram of the structure of a fan assembly provided by an embodiment of the present invention;

[0051] Fig.15 Another structural schematic diagram of a movable volute provided in an embodiment of the present invention;

[0052] Fig.16 A schematic diagram of the structure of a partition provided in an embodiment of the present invention;

[0053] Fig.17 Another schematic diagram of the structure of the partition provided by the embodiment of the present invention;

[0054] Fig.18 A schematic diagram of the structure of a guide plate provided in an embodiment of the present invention;

[0055] Fig.19 Another structural schematic diagram of the guide plate provided in the embodiment of the present invention

[0056] Fig. 20 A schematic diagram of an angle c between positioning and mounting lines of two fan assemblies provided in an embodiment of the present invention;

[0057] Fig.21 A schematic diagram of the rotation angles d1 and d2 of the movable volutes of two fan assemblies provided in an embodiment of the present invention;

[0058] Fig. 22 A gas flow diagram of the duct machine provided by the embodiment of the present invention when it is in a first state;

[0059] Fig.23 Another gas flow diagram when the air duct machine provided by the embodiment of the present invention is in the first state;

[0060] Fig.24 Another gas flow diagram when the air duct machine provided by the embodiment of the present invention is in the first state;

[0061] Fig.25A gas flow diagram of the duct machine provided by the embodiment of the present invention when it is in the second state;

[0062] Fig.26 Another gas flow diagram when the duct machine provided by the embodiment of the present invention is in the second state;

[0063] Fig. 27 Another gas flow diagram when the duct machine provided by the embodiment of the present invention is in the second state;

[0064] In the figure:

[0065] 1. Shell; 11. First air outlet; 12. Second air outlet; 2. Fixed volute; 21. Fan air inlet; 22. First air outlet; 23. Second air outlet; 3. Movable volute; 4. Baffle; 24. Common air outlet; 5. Cover; 31. Shielding part; 7. Fan blade; 32. Guide part; 33. First air outlet channel; 34. Second air outlet channel; 8. Partition; 9. Guide plate; 221. First side air outlet; 231. Second side air outlet. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0067] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0068] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0069] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0070] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] The prior art generally adopts the method of controlling the fan to reverse to achieve the reverse air discharge of the fan, so that the indoor unit can simultaneously achieve the purpose of horizontal and vertical air supply. However, the air volume is small when the fan is reversed. If the duct machine is cooling when the fan is rotating forward, the fan needs to be reversed when the duct machine is heating, resulting in poor heating capacity of the duct machine. Similarly, if the duct machine is heating when the fan is rotating forward, the fan needs to be reversed when the duct machine is cooling, resulting in poor cooling capacity of the duct machine. Both solutions will seriously affect the heat exchange efficiency of the duct machine. To this end, the present application provides a method such as Figures 1 to 27The duct machine shown in the figure comprises: a housing 1, on which a first air outlet 11 and a second air outlet 12 are arranged; at least two fan assemblies, all of which are arranged in parallel in the housing 1, and a partition structure is arranged between two adjacent fan assemblies; the fan assembly comprises: a fixed volute 2, which is arranged in the housing 1, and on which a fan air inlet 21, at least one first air outlet 22 and at least one second air outlet 23 are arranged, the first air outlet 22 is connected to the first air outlet 11, and the second air outlet 23 is connected to the second air outlet 1 2; a movable volute 3, the movable volute 3 is arranged in 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, the baffle 4 is arranged in the shell 1, and the baffle 4 has a first shielding state of separating the fan air inlet 21 and the first air outlet 11, and the baffle 4 also has a second shielding state of separating the fan air 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, so that the gas can be blown to the first air outlet 11 through the first air outlet 22, so that the duct machine can discharge air through the first air outlet 11, and the fixed volute 2 can also discharge air from the second air outlet 23, so that the gas can be blown to the second air outlet 12 through the second air outlet 23, so that the duct machine can discharge air through the second air outlet 12, and at the same time, the baffle 4 is used to separate the fan air inlet 21 from the first air outlet 11 or the second air outlet 12, so as to ensure that when the first air outlet 11 is used as the air inlet, the gas can only flow into the fan air inlet 21 from the first air outlet 11, and the gas blown to the second air outlet 12 from the second air outlet 23 cannot reach the fan air inlet 21, and it can also ensure that the gas in the second air outlet 12 When used as an air inlet, gas can only flow into the fan inlet 21 from 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, thereby ensuring the working reliability of the duct machine and overcoming the problem in the prior art that the air outlet direction of the duct machine can only be adjusted by changing the direction of the fan. The duct machine can obtain reliable air volume in both cooling mode and heating mode, thereby ensuring the heat exchange efficiency of the duct machine. Moreover, since the number of fan assemblies is at least two, there is a spacing between two adjacent fan assemblies to ensure the reliable movement of the movable volute 3 and the baffle 4. For this reason, a partition structure is provided between adjacent fan assemblies, and the partition structure is used to block the spacing, thereby ensuring the partition between the first air outlet 11 and the second air outlet 12. The partition structure can cooperate with the shell 1 to ensure the reliable air inlet and outlet of the fan assembly.

[0072] Specifically, the partition structure includes a partition 8, and the edge of the partition 8 is sealed with the corresponding inner wall of the adjacent fixed volute 2 and the housing 1. The partition 8 is used to block the gap, thereby ensuring reliable air inlet and outlet of the fan assembly. There is a gap between two adjacent fan assemblies, and the first air outlet 22 includes a first side air outlet 221 with an airflow direction toward the gap, and the second air outlet 23 includes a second side air outlet 231 with an airflow direction toward the gap, such as Fig. 9 As shown, when the first side air outlet 221 is discharging air, the edge of the partition 8 is in contact and sealed with the edge area of ​​the first side air outlet 221 away from the first air outlet 11. At this time, the airflow of the first side air outlet 221 can only flow toward the first air outlet 11, and the airflow cannot flow toward the second air outlet 12 through the partition 8, thereby ensuring the working reliability of the fan assembly. Figure 5 As shown, when the second side air outlet 231 is discharging air, the edge of the partition 8 is abutted and sealed against the edge area of ​​the second side air outlet 231 away from the second air outlet 12. At this time, the airflow of the second side air outlet 231 can only flow toward the second air outlet 12, and the airflow cannot flow through the partition 8 to the first air outlet 11, thereby ensuring the working reliability of the fan assembly.

[0073] The fixed volute 2 is provided with a common air outlet 24, which is connected to the spacing. When the movable volute 3 is in the first working state or the second working state, the movable volute 3 avoids the common air outlet 24, and when the movable volute 3 is in the first working state, the common air outlet 24 forms a second air outlet 23, and the partition 8 is located between the common air outlet 24 and the first air outlet 11. When the movable volute 3 is in the second working state, the common air outlet 24 forms a first air outlet 22, and the partition 8 is located between the common air outlet 24 and the second air outlet 12. By providing the common air outlet 24, the number of openings in the fixed volute 2 is reduced, and the structural complexity of the fixed volute 2 is reduced. Moreover, by adjusting the position of the partition 8, the common air outlet 24 can be connected to the first air outlet 11 or the second air outlet 12, thereby ensuring the reliable air outlet of the fan assembly and the working reliability of the air duct machine.

[0074] Since a plurality of first air outlets 22 and a plurality of second air outlets 23 are provided on the fixed volute, when the first air outlet 22 of the fan assembly is discharging air, the airflows blown out by the first air outlets 22 of two adjacent fan assemblies will interfere with each other, and when the second air outlet 23 of the fan assembly is discharging air, the airflows blown out by the second air outlets 23 of two adjacent fan assemblies will interfere with each other. For this reason, the partition structure also includes a guide plate 9, and there is a spacing between two adjacent fan assemblies. The first air outlet 22 includes a first side air outlet 221 whose airflow direction is toward the spacing, and the second air outlet 23 includes a second side air outlet 231 whose airflow direction is toward the spacing. The guide plate 9 is arranged within the spacing, and the guide plate 9 is located between the first side air outlets 221 of the two fan assemblies or between the second side air outlets 231 of the two fan assemblies. The guide plate 9 is used to block the first side air outlets 221 of two adjacent fan assemblies, so that the airflow of the first side air outlet 221 can only flow toward the first air outlet 11 along the guiding effect of the guide plate 9, and there is no possibility of cross-flow between the airflows of the first side air outlets 221 of the two adjacent fan assemblies, thereby avoiding interference with the airflow and improving the air outlet effect of the duct machine. Similarly, the guide plate 9 can also block the second side air outlets 231 of the two adjacent fan assemblies, so that the airflow of the second side air outlet 231 can only flow toward the second air outlet 12 along the guiding effect of the guide plate 9, and there is no possibility of cross-flow between the airflows of the second side air outlets 231 of the two adjacent fan assemblies, thereby avoiding interference with the airflow and improving the air outlet effect of the duct machine.

[0075] like Figure 5 As shown, at this time, the second air outlet 12 of the duct air conditioner is discharging air, and the air outlet direction of the second side air outlet 231 in the fan assembly on the right is toward the fan assembly on the left. For this purpose, while a guide plate 9 is set at the part of the two fan assemblies away from the second air outlet 12, another guide plate 9 is also set within the spacing to guide the air outlet direction of the second side air outlet 231 of the fan assembly on the right to the direction away from the fan assembly on the left. At this time, the airflow of the second side air outlet 231 of the fan assembly on the left can flow to the left half of the second air outlet 12, while the airflow of the second side air outlet 231 of the fan assembly on the right flows to the right half of the second air outlet 12, thereby ensuring the uniformity of the air outlet of the second air outlet 12 and improving the air outlet effect of the duct air conditioner.

[0076] like Fig.16As shown, the guide plate 9 is arranged on the partition 8, and the partition includes a horizontal sealing plate and a first vertical sealing plate located on the first side of the horizontal sealing plate and a second vertical sealing plate located on the second side of the horizontal sealing plate. The horizontal sealing plate and the baffle 4 are in the same plane, the first vertical sealing plate can block the area between the baffle 4 and the shell 1, and the second vertical sealing plate can block the distance between two adjacent fan components on the second side of the baffle 4. At the same time, the guide plate 9 is just located in the distance to guide the airflow. When the duct machine needs to discharge air from the first air outlet 11, it can be selected Fig.16 The partition structure shown is applied to a duct machine to ensure reliable air outlet of the first air outlet 11 of the duct machine.

[0077] Or, if Figures 17 to 19 As shown, the partition structure is divided into three parts and includes Fig.17 The guide plate 9 shown and Fig.18 The first guide portion and Fig.19 The second guide part shown, at this time Fig.17 The horizontal part of the guide plate 9 is in the same plane as the baffle 4, and the vertical part of the guide plate 9 blocks the area between the baffle 5 and the housing 1, and the first guide part blocks the first air outlet 11 and the second air outlet 12 within the spacing, and the second guide part guides the airflow of the second side air outlet 231 to ensure the working reliability of the fan assembly. When the duct fan needs to discharge air from the second air outlet 12, it can be selected Figures 17 to 19 The partition structure formed by the structural combination shown is applied to a duct machine to ensure reliable air outlet of the first air outlet 11 of the duct machine.

[0078] As an embodiment, the fan air inlet 21 is arranged on the end face of the fixed volute 2, and there is a first distance between the end face of the fixed volute 2 and the inner wall of the shell 1. The baffle 4 moves within the first distance. By moving the baffle 4 within the first distance, the baffle 4 can move on both sides of the fan air inlet 21. Since the fixed volute 2 is located in the shell 1, the first air outlet 11 and the second air outlet 12 will be located on both sides of the fixed volute 2. The baffle 4 moves on both sides of the fan air inlet 21, so as to achieve the partition between the fan air inlet 21 and the first air outlet 11 and the partition between the fan air inlet 21 and the second air outlet 12, thereby ensuring the air intake reliability of the duct air conditioner, and then ensuring the working reliability of the duct air conditioner. Among them, when the baffle 4 is in the first shielding state or the second shielding state, the edge of the baffle 4 close to the fixed volute 2 is sealed and matched with the corresponding part of the fixed volute 2, and the edge of the baffle 4 away from the fixed volute 2 is sealed and matched with the inner wall of the shell 1, thereby ensuring the baffle 4 to separate the fan air inlet 21 from the first air outlet 11 or the second air outlet 12, and ensuring the working reliability of the air duct machine. Preferably, a matching structure is provided in the shell 1, and the matching structure is located within the first spacing, and the baffle 4 can abut and match with the matching structure, thereby improving the separation effect of the baffle 4.

[0079] Optionally, the cross-section of the fan air inlet 21 is circular, and the cross-section of the baffle 4 is arc-shaped, and the arc is coaxially arranged with the circle. By setting the baffle 4 to an arc, the baffle 4 can rotate with the axis of the circle as the axis, thereby reducing the volume of the baffle 4 and the avoidance area required during the movement, reducing the volume and occupied space of the duct machine, and improving the user experience of the duct machine. In order to ensure the sealing effect between the baffle 4 and the fixed volute 2, and also to ensure the reliable rotation of the baffle 4 on the fixed volute 2, a circular ring is provided at one end of the baffle 4 close to the fixed volute 2, and the circular ring contacts and cooperates with the edge of the fan air inlet 21, further improving the partition effect of the baffle 4.

[0080] The shell 1 has a first side panel, the first air outlet 11 is arranged on the first side panel, the fan air inlet 21 faces the first side panel, and the projection of the fan air inlet 21 on the first side panel at least partially overlaps with the first air outlet 11. By overlapping the first air outlet 11 with at least part of the fan air inlet 21, the flow rate flowing from the first air outlet 11 to the fan air 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 panel, so that the fixed volute 2 can also be similarly arranged at the rear of the shell 1, and then a heat exchanger and other related structures can be arranged at the front of the shell 1, thereby further reducing the volume and occupied space of the duct machine and improving the user experience of the duct machine.

[0081] Since there is an overlapped portion between the fan air inlet 21 and the first air outlet 11, in order to ensure the partition effect between the fan air inlet 21 and the first air outlet 11, the fan assembly further includes a cover plate 5, which is arranged 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 overlapped shape of the projection of the fan air inlet 21 on the first side plate and the first air outlet 11, and when the baffle 4 is in the first shielding state, the cover plate 5 is located between the fan air inlet 21 and the first air outlet 11. The cover plate 5 and the baffle 4 cooperate to achieve the partition between the fan air inlet 21 and the first air outlet 11, and ensure the working reliability of the air duct machine, and when the baffle 4 is in the second shielding state, the cover plate 5 moves to the inside of the housing 1 with the baffle 4, and at this time, the cover plate 5 can fit with the inner wall of the housing 1, further improving the partition effect between the second air outlet 12 and the fan air inlet 21, and further ensuring the working reliability of the air duct machine.

[0082] The duct machine also includes a flow guiding structure, which is arranged in the shell 1, and the flow guiding structure divides the interior of the shell 1 into at least one first air duct and at least one second air duct, the first air duct corresponds to the first air outlet 22 one by one, and each of the first air outlets 22 is connected to the first air outlet 11 through the corresponding first air duct, and the second air duct corresponds to the second air outlet 23 one by one, and each of the second air outlets 23 is connected to the second air outlet 12 through the corresponding second air duct. The first air duct is used to guide the airflow of the first air outlet 22, so that the gas of the first air outlet 22 can flow smoothly to the first air outlet 11, reduce the flow resistance of the gas in the shell 1, and improve the air outlet effect of the duct machine; similarly, the second air duct is used to guide the airflow of the second air outlet 23, so that the gas of the second air outlet 23 can flow smoothly to the first air outlet 11, reduce the flow resistance of the gas in the shell 1, and improve the air outlet effect of the duct machine.

[0083] Preferably, the guide structure includes multiple guide plates, all of which are arranged in the shell 1 to enclose the first air duct or the second air duct, and the guide plates can also block the distance between the fixed volute 2 and the shell 1, ensuring that the airflow entering the shell 1 can only flow through the fan corresponding to the fixed volute 2, thereby ensuring the working reliability of the duct machine.

[0084] The movable volute 3 includes a shielding portion 31. When the movable volute 3 is in the first working state, the shielding portion 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 portion 31 shields the second air outlet 23 and avoids the first air outlet 22. The shielding portion 31 is used to shield all the first air outlets 22 or all the second air outlets 23 at the same time, thereby ensuring the reliability of adjusting the air outlet direction of the fan corresponding to the fixed volute 2.

[0085] The fan assembly further includes a fan blade 7, which is rotatably disposed in the fixed volute 2. The cross section of the shielding portion 31 is arc-shaped, and the thickness of the shielding portion 31 gradually increases along the rotation direction of the fan blade 7. The increase in the thickness of the shielding portion 31 improves the rectifying effect of the gas in the fixed volute 2, improves the air outlet effect of the fan corresponding to the fixed volute 2, and thus ensures the heat exchange efficiency of the duct fan.

[0086] Among them, the minimum gap between the shielding part 31 and the fan blade 7 is a1, 8mm<a1<15mm. When a1≤8mm, the spacing between the shielding part 31 and the fan blade 7 is too small, and the movement error, shape error, rotation error of the shielding part 31, and the fan blade 7 will cause interference between the shielding part 31 and the fan blade 7 and cause damage to the fan blade 7; and when a1≥15mm, the spacing between the shielding part 31 and the fan blade 7 is too large, and the airflow rectification ability in the fixed volute 2 is poor, and the air outlet effect cannot be improved. 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 can also be guaranteed.

[0087] The movable volute 3 also includes a guide portion 32, which is spaced apart from the shielding portion 31, and a first air outlet channel 33 is formed between a first end of the guide portion 32 and a second end of the shielding portion 31, and a second air outlet channel 34 is formed between the second end of the guide portion 32 and the first end of the shielding portion 31. When the movable volute 3 is in the first working state or in the second working state, the guide portion 32 overlaps with the corresponding portion of the fixed volute 2. The guide part 32 is used to further rectify the airflow in the fixed volute 2, and the air outlet effect of the fixed volute 2 is further improved. At the same time, the guide part 32 overlaps with the corresponding part of the fixed volute 2, so as to avoid the guide part 32 blocking the first air outlet 22 or the second air outlet 23, thereby ensuring the air outlet reliability of the fixed volute 2. When the movable volute 3 is switched 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, and the guide part 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 part 32, and the remaining airflow flows through the guide part 3 2 and then discharged from the second air outlet 23 at the second end, and the guide part 32 is used to rectify part of the airflow again, so as to further improve the air outlet effect of the air duct machine. Similarly, when the movable volute 3 is switched to the second working state, the first air outlet channel 33 and the second air outlet channel 34 are respectively connected with the corresponding second air outlet 23, and the guide part 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 part 32, and the remaining airflow flows through the guide part 32 and then is discharged from the first air outlet 22 at the second end. The guide part 32 is used to rectify part of the airflow again, so as to further improve the air outlet effect of the air duct machine.

[0088] The fan assembly further includes a fan blade 7, which is rotatably disposed in the fixed volute 2. The cross section of the guide portion 32 is arc-shaped, and the thickness of the guide portion 32 gradually increases along the rotation direction of the fan blade 7. The increase in the thickness of the guide portion 32 improves the rectifying effect of the gas in the fixed volute 2, improves the air outlet effect of the fan corresponding to the fixed volute 2, and thus ensures the heat exchange efficiency of the duct fan.

[0089] The minimum gap between the guide portion 32 and the fan blade 7 is a2, 1.5a1<a2<2a1, a1 is the minimum gap between the shielding portion 31 and the fan blade 7. When a2 is too small, the spacing between the guide portion 32 and the fan blade 7 is too small, and the movement error, shape error, rotation error of the guide portion 32, and the fan blade 7 will cause interference between the guide portion 32 and the fan blade 7 and damage the fan blade 7; and when a2 is too large, the spacing between the guide portion 32 and the fan blade 7 is too large, and the airflow rectification ability in the fixed volute 2 is poor, and the air outlet effect cannot be improved. Only when 1.5a1<a2<2a1, can the structural reliability between the guide portion 32 and the fan blade 7 be guaranteed, and the airflow rectification effect of the guide portion 32 can also be guaranteed.

[0090] The relationship between the central angle α corresponding to the first air outlet channel 33, the central angle β corresponding to the guide portion 32, and the central angle γ corresponding to the second air outlet channel 34 is: α+β+γ≤180°. At this time, the central angle corresponding to the relative shielding portion 31 is greater than 180°, so that the shielding portion 31 can shield all the first air outlets 22 or all the second air outlets 23 at the same time, ensuring the working reliability of the air duct machine. Among them, α, β and γ can be equal or unequal.

[0091] The line between the central axis of the fixed volute 2 and the midpoint of the guide portion 32 constitutes the installation positioning line of the fixed volute 2, and the vertical planes perpendicular to the plane where the second air outlet 12 is located constitute the positioning surface of the shell 1. The angle c between the positioning line of at least one of the fan components and the positioning surface is in the range of 15°≤c≤25°. When installing the fixed volute 2, first determine the installation positioning line of the fixed volute 2. Since the fan component has a part close to the inner wall of the shell 1, the first air outlet or the second air outlet of the fan component will face the inner wall of the shell 1 and cannot smoothly discharge air. For this reason, the fan component is deflected and installed by adjusting the installation positioning line of the fan component, that is, the corresponding installation positioning line of the fan component is deflected by an angle c, so that the first air outlet 22 or the second air outlet 23 facing the inner wall of the shell 1 will not face the inner wall of the shell 1 vertically, thereby improving the smoothness of the first air outlet 22 or the second air outlet 23 and ensuring the air outlet effect of the duct fan.

[0092] Among them, when the air outlet of the fan assembly is adjusted, the angle range of the rotation angle d1 of the movable volute 3 is 150° to 180°, wherein the value of d1 is designed according to the position of the first air outlet 22 and the position of the second air outlet 23. When the angle d1 is too small, the distance between the first air outlet 22 and the second air outlet 23 is too small, and the difference between the air outlet direction of the first air outlet 22 and the air outlet direction of the second air outlet 23 of the fan assembly is too small, which cannot meet the purpose of the duct machine to discharge air in different directions. When the angle d1 is too large, since the shape of the fixed volute 2 is annular, the distance between the first air outlet 22 and the second air outlet 23 is still too small, and the difference between the air outlet direction of the first air outlet 22 and the second air outlet 23 of the fan assembly is too small, which cannot meet the purpose of the duct machine to discharge air in different directions.

[0093] The rotation angle d2 of the movable volute 3 in the fan assembly provided with the common air outlet 24 has an angle range of 110° to 130°. Since the common air outlet 24 can be used as the first air outlet 22 or the second air outlet 23, the fan assembly provided with the common air outlet 24 can reduce the rotation angle of the movable volute 3 and also ensure reliable adjustment of the air outlet direction of the fan assembly.

[0094] The number of the fan assemblies is two, and the two fan assemblies include a left fan assembly and a right fan assembly. The airflow of at least one of the first air outlets 22 in the left fan assembly flows through the left end of the first air outlet 11, and the airflow of at least one of the first air outlets 22 in the right fan assembly flows through the right end of the first air outlet 11. At this time, it can be ensured that all parts of the first air outlet 11 can obtain airflow, thereby ensuring the uniformity of the air outlet of the first air outlet 11 and improving the air outlet effect of the duct machine. Similarly, the airflow of at least one of the second air outlets 23 in the left fan assembly flows through the left end of the second air outlet 12, and the airflow of at least one of the second air outlets 23 in the right fan assembly flows through the right end of the second air outlet 12. At this time, it can be ensured that all parts of the second air outlet 12 can obtain airflow, thereby ensuring the uniformity of the air outlet of the second air outlet 12 and improving the air outlet effect of the duct machine.

[0095] The first air outlet 11 is provided on the bottom wall of the housing 1, and the second air outlet 12 is provided on the side wall of the housing 1. When the first air outlet 11 is used as a return air outlet, the indoor unit realizes downward return air and lateral air discharge, realizes horizontal blowing of cold air, and avoids the discomfort caused by direct blowing of cold air; when the second air outlet 12 is used as a return air outlet, realizes lateral return air and downward air discharge, realizes downward blowing of hot air, and improves the heating effect.

[0096] Specifically, the duct machine has a first state in which the first air outlet 11 is used as a return air outlet and the second air outlet 12 is used as an outlet, and the duct machine has a second state in which the first air outlet 11 is used as an outlet and the second air outlet 12 is used as a return air outlet;

[0097] When the duct 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 separates the second air outlet 12 and the fan air inlet 21. The airflow entering the housing 1 from the first air outlet 11 flows to the fan air inlet 21, and flows to the second air outlet 12 through the second air outlet 23. At this time, the air is returned from the bottom of the duct air conditioner and discharged sideways, so that the cold air is blown horizontally to avoid the discomfort caused by the direct blowing of the cold air.

[0098] When the duct 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 separates the first air outlet 11 and the fan air inlet 21. The airflow entering the shell 1 from the second air outlet 12 flows to the fan air inlet 21 and flows to the first air outlet 11 through the first air outlet 22. At this time, the duct air conditioner returns air to the side and discharges air from the bottom, so that hot air is blown downward, thereby improving the heating effect.

[0099] Alternatively, the first air outlet 22 is connected to the outside of the shell 1 through the side wall of the shell 1, so that the cold air is blown horizontally to avoid the discomfort caused by the direct blowing of cold air; the second air outlet 23 is connected to the outside of the shell 1 through the bottom wall of the shell 1, so that the hot air is blown downward to improve the heating effect.

[0100] The fixed volute 2 and the movable volute 3 together form a complete volute structure. By making the movable volute 3 and the fixed volute 2 form a complete volute structure, the fan assembly can drive the airflow well, ensuring the working efficiency of the duct fan.

[0101] An air conditioner comprises the above-mentioned duct air conditioner.

[0102] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A duct machine, characterized in that: include: A housing (1), wherein the housing (1) is provided with a first air outlet (11) and a second air outlet (12); At least two fan assemblies, all of which are arranged in parallel in the housing (1), and a partition structure is provided between two adjacent fan assemblies; The fan assembly comprises: a fixed volute (2), the fixed volute (2) being arranged in the housing (1), and the fixed volute (2) being provided with a fan air inlet (21), at least one first air outlet (22) and at least one second air outlet (23), the first air outlet (22) being in communication with the first air outlet (11), and the second air outlet (23) being in communication with the second air outlet (12); a movable volute (3), the movable volute (3) being arranged in the fixed volute (2), and the movable volute (3) having a first working state of closing the first air outlet (22) and opening the second air outlet (23), and the movable volute (3) also having a second working state of closing the second air outlet (23) and opening the first air outlet (22); A baffle (4), the baffle (4) being arranged in the housing (1), and the baffle (4) having a first shielding state for separating the fan air inlet (21) and the first air outlet (11), and the baffle (4) also having a second shielding state for separating the fan air inlet (21) and the second air outlet (12).

2. The air duct machine according to claim 1, characterized in that: The partition structure comprises a partition plate (8), the edges of which are sealingly matched with the corresponding inner walls of the adjacent fixed volute (2) and the housing (1).

3. The air duct machine according to claim 2, characterized in that: There is a distance between two adjacent fan assemblies, a common air outlet (24) is provided on the fixed volute (2), the common air outlet (24) is connected to the distance, and when the movable volute (3) is in the first working state or the second working state, the movable volute (3) avoids the common air outlet (24); When the movable volute (3) is in the first working state, the common air outlet (24) forms a second air outlet (23), and the partition plate (8) is located between the common air outlet (24) and the first air outlet (11); When the movable volute (3) is in the second working state, the common air outlet (24) forms one of the first air outlets (22), and the partition plate (8) is located between the common air outlet (24) and the second air outlet (12).

4. The air duct machine according to claim 1, characterized in that: The partition structure further comprises a guide plate (9), a spacing is provided between two adjacent fan assemblies, the first air outlet (22) comprises a first side air outlet (221) with an airflow direction toward the spacing, the second air outlet (23) comprises a second side air outlet (231) with an airflow direction toward the spacing, the guide plate (9) is arranged within the spacing, and the guide plate (9) is located between the first side air outlets (221) of the two fan assemblies or between the second side air outlets (231) of the two fan assemblies.

5. The air duct machine according to claim 1, characterized in that: The fan air inlet (21) is arranged on the end face of the fixed volute (2), and there is a first distance 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 distance.

6. The air duct machine according to claim 5, characterized in that: The housing (1) has a first side plate, the first air port (11) is arranged on the first side plate, the fan air inlet (21) faces the first side plate, and the projection of the fan air inlet (21) on the first side plate at least partially overlaps with the first air port (11).

7. The air duct machine according to claim 6, characterized in that: The fan assembly further comprises a cover plate (5), the cover plate (5) being arranged at an end of the baffle plate (4) away from the fixed volute (2), and the shape of the cover plate (5) being the same as the overlapping shape of the projection of the fan air inlet (21) on the first side plate and the first air outlet (11), and when the baffle plate (4) is in the first shielding state, the cover plate (5) is located between the fan air inlet (21) and the first air outlet (11).

8. The air duct machine according to claim 5, characterized in that: The cross section of the fan air inlet (21) is circular, and the cross section of the baffle (4) is arc-shaped, and the arc is arranged coaxially with the circle.

9. The air duct machine according to claim 1, characterized in that: The air duct machine further comprises an air guide structure, wherein the air guide structure is arranged in the shell (1), and the air guide structure divides the interior of the shell (1) into at least one first air duct and at least one second air duct, wherein the first air duct corresponds to the first air outlet (22) one by one, and each of the first air outlets (22) is connected to the first air outlet (11) via the corresponding first air duct, and the second air duct corresponds to the second air outlet (23) one by one, and each of the second air outlets (23) is connected to the second air outlet (12) via the corresponding second air duct.

10. The air duct machine according to claim 1, characterized in that: The movable volute (3) comprises a shielding portion (31), and when the movable volute (3) is in the first working state, the shielding portion (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 portion shields the second air outlet (23) and avoids the first air outlet (22).

11. The air duct machine according to claim 10, characterized in that: The fan assembly further comprises a fan blade (7), wherein the fan blade (7) is rotatably arranged in the fixed volute (2), the cross section of the shielding portion (31) is arc-shaped, and the thickness of the shielding portion (31) gradually increases along the rotation direction of the fan blade (7).

12. The air duct machine according to claim 11, characterized in that: The minimum gap between the shielding portion (31) and the fan blade (7) is a1, 8mm<a1<15mm.

13. The air duct machine according to claim 10, characterized in that: The movable volute (3) further comprises a guide portion (32), the guide portion (32) being spaced apart from the shielding portion (31), and a first air outlet passage (33) being formed between a first end of the guide portion (32) and a second end of the shielding portion (31), and a second air outlet passage (34) being formed between a second end of the guide portion (32) and a first end of the shielding portion (31); when the movable volute (3) is in the first working state or in the second working state, the guide portion (32) and a corresponding portion of the fixed volute (2) overlap with each other.

14. The air duct machine according to claim 13, characterized in that: The fan assembly also includes a fan blade (7), which is rotatably arranged in the fixed volute (2), and the cross-section of the guide portion (32) is arc-shaped, and the thickness of the guide portion (32) gradually increases along the rotation direction of the fan blade (7).

15. The air duct machine according to claim 14, characterized in that: The minimum gap between the air guide portion (32) and the fan blade (7) is a2, 1.5a1<a2<2a1, and a1 is the minimum gap between the shielding portion (31) and the fan blade (7).

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

17. The air duct machine according to claim 13, characterized in that: The line connecting the central axis of the fixed volute (2) and the midpoint of the guide portion (32) constitutes the installation positioning line of the fixed volute (2), the vertical planes perpendicular to the plane where the second air outlet (12) is located constitute the positioning surface of the shell (1), and the angle c between the installation positioning line and the positioning surface of at least one of the fan components is in the range of 15°≤c≤25°.

18. The air duct machine according to claim 3, characterized in that: The rotation angle d1 of the movable volute (3) ranges from 150° to 180°; and / or the rotation angle d2 of the movable volute (3) in the fan assembly provided with the common air outlet (24) ranges from 110° to 130°.

19. The air duct machine according to claim 1, characterized in that: The number of the fan assemblies is two, and the two fan assemblies include a left fan assembly and a right fan assembly. The airflow of at least one of the first air outlets (22) in the left fan assembly flows through the left end of the first air outlet (11), and the airflow of at least one of the second air outlets (23) in the left fan assembly flows through the left end of the second air outlet (12). The airflow of at least one of the first air outlets (22) in the right fan assembly flows through the right end of the first air outlet (11), and the airflow of at least one of the second air outlets (23) in the right fan assembly flows through the right end of the second air outlet (12).

20. The air duct machine according to claim 1, characterized in that: The first air port (11) is arranged on the bottom wall of the shell (1), and the second air port (12) is arranged on the side wall of the shell (1); the first air outlet (22) is connected to the outside of the shell (1) through the side wall of the shell (1), and the second air outlet (23) is connected to the outside of the shell (1) through the bottom wall of the shell (1).

21. The air duct machine according to claim 1, characterized in that: The fixed volute (2) and the movable volute (3) together form a complete volute-shaped structure.

22. The air duct machine according to claim 1, characterized in that: The duct air conditioner has a first state in which the first air outlet (11) is used as a return air outlet and the second air outlet (12) is used as an outlet, and the duct air conditioner has a second state in which the first air outlet (11) is used as an outlet and the second air outlet (12) is used as a return air outlet; When the air 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 air 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.

23. An air conditioner, characterized in that: The invention comprises the duct machine according to any one of claims 1 to 22.

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