Volute device, fan assembly and duct type air conditioner

Abstract

The invention provides a volute device, a fan assembly and a duct type air conditioner. The volute device is switched between the first position and the second position through the movable volute, and switching between air outlet of the side air opening and air outlet of the lower air opening is achieved. In addition, a second baffle is arranged at one end of the fixed volute and located on the side, away from the first baffle, of the lower air opening, and when the movable volute is located at the second position, a second volute tongue of the movable volute abuts against the first end of the first baffle in a sealed mode, and a first volute tongue of the movable volute abuts against the first end of the second baffle in a sealed mode. The first baffle and the second baffle are both movable baffles, in the process that the movable volute rotates from the second position to the third position, the first baffle can be driven to move in the direction close to the lower air opening, the second baffle is driven to move in the direction of opening the lower air opening, and therefore the air outlet angle of the lower air opening is adjusted. Therefore, the lower air outlet angle is more adaptive to the current scene, the air conditioning effect is improved, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of ducted fan air conditioner, and particularly relates to a volute device, a fan assembly and a ducted fan air conditioner. BACKGROUND

[0002] At present, ducted fan air conditioners that can blow air from the side and from the bottom are being developed. In the related art, the main research is focused on the implementation of air blowing from the side and from the bottom. For example, some technologies use a volute reversing method to switch between air blowing from the side and from the bottom. However, when the ducted fan air conditioner blows air from the bottom in the heating mode, different room layouts, as well as different positions of the home and the installation position of the ducted fan air conditioner, will affect the overall airflow flow, thereby causing different air conditioning effects and seriously affecting the user experience. SUMMARY

[0003] In view of this, in order to solve the technical problem that, in the related art, when the ducted fan air conditioner blows air from the bottom in the heating mode, different room layouts, as well as different positions of the home and the installation position of the ducted fan air conditioner, will affect the overall airflow flow, thereby causing different air conditioning effects and seriously affecting the user experience, the present disclosure provides a volute device, a fan assembly and a ducted fan air conditioner.

[0004] According to a first aspect of an embodiment of the present disclosure, a volute device is provided, which comprises a fixed volute, a movable volute and a first baffle. The fixed volute cooperates with the first baffle to form a side air outlet and a bottom air outlet in the fixed volute, which are separated by the first baffle. A second baffle is arranged on one side of the fixed volute, and the second baffle is located on the side of the bottom air outlet that is away from the first baffle. The movable volute is movably arranged in the fixed volute. The movable volute has a first position in which the movable volute opens the side air outlet and closes the bottom air outlet. The movable volute also has a second position in which the movable volute opens the bottom air outlet and closes the side air outlet. When the movable volute is in the second position, a second volute tongue of the movable volute sealingly abuts against a first end of the first baffle, and a first volute tongue of the movable volute sealingly abuts against the side of the second baffle that faces the bottom air outlet. The first baffle and the second baffle are respectively configured as movable baffles. During the rotation of the movable volute from the second position to a third position, the first baffle is driven to move towards the bottom air outlet, and the second baffle is driven to move to open the bottom air outlet, so as to adjust the air outlet angle of the bottom air outlet.

[0005] In an optional embodiment, The volute device comprises an arc-shaped track fixedly connected with the fixed volute, and the first baffle comprises a matching part matched with the arc-shaped track, and the matching part is clamped into the arc-shaped track. During the rotation of the movable volute from the second position to the third position, the movable volute drives the matching part to move along the arc-shaped track.

[0006] In an optional embodiment, The movement track of the matching part in the arc-shaped track has the same center as the movement track of the movable volute.

[0007] In an optional embodiment, The first baffle comprises a first baffle segment and a second baffle segment, the first baffle segment is rotationally connected with the second baffle segment, the matching part is arranged on the first baffle segment, and a first end of the first baffle is an end of the first baffle segment away from the second baffle segment.

[0008] In an optional embodiment, When the movable volute moves to the third position, the second baffle segment is parallel to the second baffle.

[0009] In an optional embodiment, The volute device comprises a connecting rod, one end of the connecting rod is connected with the first baffle segment. Another end of the connecting rod is connected with a first end of the second baffle, or when the movable volute is located at the second position, the other end of the connecting rod abuts against a side of the first end of the second baffle facing the downcast inlet.

[0010] In an optional embodiment, The volute device comprises a first driving assembly, during the reset of the movable volute from the third position to the second position, the first driving assembly drives the second baffle to move in a direction of closing the downcast inlet, so that the second baffle drives the first baffle to reset through the connecting rod.

[0011] In an optional embodiment, The fixed volute is provided with a straight track matched with the second baffle, and the straight track is used for limiting the movement track of the second baffle.

[0012] According to a second aspect of the embodiments of the present disclosure, a fan assembly is provided, which comprises a centrifugal fan and the volute device according to any one of the first aspect.

[0013] According to a third aspect of the present disclosure, a duct air conditioner is provided, the duct air conditioner including at least one fan assembly as described in the second aspect.

[0014] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: In this disclosure, the volute device includes a movable volute and a fixed volute. When the movable volute is in a first position, the side air vent of the volute device is open, and the downwind vent is closed. When the movable volute is in a second position, the downwind vent of the volute device is open, and the side air vent is closed. That is, this disclosure achieves the switching between side air vent outlet and downwind vent outlet by switching the movable volute between the first and second positions. In addition, a second baffle is provided at one end of the fixed volute. The second baffle is located on the side of the downwind vent opposite to the first baffle. When the movable volute is in the second position, the second volute tongue of the movable volute is in sealed contact with the first end of the first baffle, and the first volute tongue of the movable volute is in sealed contact with the first end of the second baffle. Furthermore, in this disclosure, both the first and second baffles are movable baffles, and the movable volute also has a third position. During the rotation of the movable volute from the second to the third position, the first baffle can be moved closer to the downwind outlet, and the second baffle can be moved towards opening the downwind outlet, thereby adjusting the air outlet angle. Based on this, when this volute device is applied to a ducted air conditioner, and the ducted air conditioner uses downwind airflow, the user can adjust the downwind outlet angle according to actual conditions (such as room layout, furniture location, and ducted air conditioner installation location) and needs, making the downwind outlet angle more suitable for the current scenario, improving air conditioning effect, and thus enhancing the user experience.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0019] Figure 1 This is a schematic diagram of the interior of a ductwork unit according to an exemplary embodiment.

[0020] Figure 2 This is a schematic diagram of the structure of a ducted air handling unit according to an exemplary embodiment.

[0021] Figure 3 This is a schematic diagram of airflow with the active volute in a first position, according to an exemplary embodiment.

[0022] Figure 4 This is a schematic diagram of the structure of the active volute located in a first position according to an exemplary embodiment.

[0023] Figure 5 This is a schematic diagram of airflow with the active volute in a second position, according to an exemplary embodiment.

[0024] Figure 6 This is a schematic diagram of the structure of the active volute located in the second position according to an exemplary embodiment.

[0025] Figure 7 This is a schematic diagram of airflow from the bottom of a ducted air conditioner, according to an exemplary embodiment.

[0026] Figure 8 This is a schematic diagram of a structure showing the active volute between a second position and a third position, according to an exemplary embodiment.

[0027] Figure 9 This is a schematic diagram of a ducted air handling unit from another angle, according to an exemplary embodiment.

[0028] Figure 10 This is a schematic diagram of the structure of a volute device according to an exemplary embodiment.

[0029] Figure 11 This is a partial schematic diagram of a volute device according to an exemplary embodiment.

[0030] in: 1. Movable volute; 11. First volute tongue; 12. Second volute tongue; 2. Fixed volute; 3. Centrifugal fan; 4. First baffle; 41. First section baffle; 42. Second section baffle; 5. Second baffle; 51. Protrusion; 6. Connecting rod; 61. Rod body; 62. Connecting end; 7. Arc-shaped track; 8. Linear track; 9. Evaporator; 10. Rotating baffle; 20. Duct fan 100. Side vent; 200. Downwind vent. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] The following disclosure provides numerous different embodiments or examples for implementing various aspects of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0033] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0034] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0035] The embodiments of this application will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be understood that the preferred embodiments are only for illustrating this application and are not intended to limit the scope of protection of this application.

[0036] To address the technical problem in existing ducted air conditioners where different room layouts, furniture positions, and duct unit installation locations all affect the overall airflow when the ducted air conditioner is in heating mode with downward airflow, resulting in varying air conditioning effects and severely impacting user experience, this disclosure provides a volute device, a fan assembly, and a ducted air conditioner.

[0037] In this disclosure, the volute device includes a movable volute and a fixed volute. When the movable volute is in a first position, the side air vent of the volute device is open, and the downwind vent is closed. When the movable volute is in a second position, the downwind vent of the volute device is open, and the side air vent is closed. That is, this disclosure achieves the switching between side air vent and downwind vent by switching the movable volute between the first and second positions. In addition, a second baffle is provided at one end of the fixed volute. The second baffle is located on the side of the downwind vent opposite to the first baffle. When the movable volute is in the second position, the second volute tongue of the movable volute is in sealed contact with the first end of the first baffle, and the first volute tongue of the movable volute is in sealed contact with the first end of the second baffle. Furthermore, in this disclosure, both the first and second baffles are movable baffles, and the movable volute also has a third position. During the rotation of the movable volute from the second to the third position, the first baffle can be moved closer to the downwind outlet, and the second baffle can be moved towards opening the downwind outlet, thereby adjusting the air outlet angle. Based on this, when this volute device is applied to a ducted air conditioner, and the ducted air conditioner uses downwind airflow, the user can adjust the downwind outlet angle according to actual conditions (such as room layout, furniture location, and ducted air conditioner installation location) and needs, making the downwind outlet angle more suitable for the current scenario, improving air conditioning effect, and thus enhancing the user experience.

[0038] In one exemplary embodiment, reference Figures 1 to 8As shown, a volute device, a fan assembly incorporating the volute device, and a duct unit 20 incorporating the fan assembly are provided. In this embodiment, the fan assembly may further include a centrifugal fan 3, located within the volute device, for driving gas flow. The volute device may include a fixed volute 2, a movable volute 1, and a first baffle 4. The fixed volute 2 cooperates with the first baffle 4 to form a side air outlet and a down air outlet separated by the first baffle 4 on the fixed volute 2.

[0039] It should be noted that in this embodiment, the volute device and the centrifugal fan 3 are assembled into a fan assembly, and the fan assembly and other components together constitute the duct air conditioner 20. The housing of the duct air conditioner 20 contains air vents corresponding to the aforementioned side air vents and air vents corresponding to the aforementioned down-draft air vents. In use, the air vent in the volute device used to achieve lateral airflow from the duct air conditioner 20 is referred to as the side air vent, and the air vent used to achieve downward airflow from the duct air conditioner 20 is referred to as the down-draft air vent.

[0040] The movable volute 1 is movably disposed on the fixed volute 2. The movable volute 1 has a first position where the side air vent is opened and the downwind vent is closed, and a second position where the downwind vent is opened and the side air vent is closed. Therefore, by switching the movable volute 1 between the first and second positions, the side air vent and the downwind vent can be switched, thereby achieving the switching between side airflow and downwind airflow.

[0041] The fixed volute 2 is provided with a second baffle 5 on one side, and the second baffle 5 is located on the side of the downwind opening away from the first baffle 4. When the movable volute 1 is in the second position, the second volute tongue 12 of the movable volute 1 is sealed and abutted against the first end of the first baffle 4, and the first volute tongue 11 of the movable volute 1 is sealed and abutted against the first end of the second baffle 5.

[0042] In addition, in this embodiment, the first baffle 4 and the second baffle 5 are respectively constructed as movable baffles, and the movable volute 1 also has a third position. During the rotation of the movable volute 1 from the second position to the third position, the first baffle 4 can be moved closer to the downdraft opening, and the second baffle 5 can be moved to open the downdraft opening, thereby adjusting the air outlet angle of the downdraft opening. Based on this, in this embodiment, when the ducted air conditioner 20 adopts downdraft air outlet, the user can adjust the downdraft air outlet angle according to the actual situation (such as room layout, furniture location, and installation location of the ducted air conditioner 20) and needs, so that the downdraft air outlet angle is more suitable for the current scenario, improving the air conditioning effect and thus enhancing the user experience.

[0043] In this embodiment, when the ducted air conditioner 20 needs to use side air outlet, the movable volute 1 is controlled to rotate to the first position. At this time, the movable volute 1 blocks the lower air outlet and opens the side air outlet. The airflow driven by the centrifugal fan 3 is guided by the volute device and discharged directly from the side air outlet, completing the side air outlet. When the ducted air conditioner 20 needs to use bottom air outlet, the movable volute 1 is controlled to rotate from the first position to the second position. At this time, the movable volute 1 blocks the side air outlet and opens the lower air outlet. Its second volute tongue 12 is sealed and abuts against the first end of the first baffle 4, and the first volute tongue 11 is sealed and abuts against the first end of the second baffle 5, realizing the sealing and closure of the side air outlet. The airflow driven by the centrifugal fan 3 is guided by the volute device and discharged from the lower air outlet, completing the bottom air outlet.

[0044] When the duct unit 20 is in the down-discharge mode (the movable volute 1 is in the second position), and the user needs to adjust the air outlet angle and air volume according to the actual scenario, the movable volute 1 is controlled to rotate from the second position to the third position. During this process, the movable volute 1 drives the first baffle 4 to move closer to the down-discharge through the transmission structure, adjusting the angle of the first baffle 4 relative to the down-discharge. At the same time, it drives the second baffle 5 to move in the direction of opening the down-discharge, so as to adjust the opening size of the down-discharge, thereby realizing the adjustment of the down-discharge angle to meet the airflow adjustment needs of the current usage scenario.

[0045] This embodiment utilizes the movable design of the first baffle 4 and the second baffle 5, combined with the rotational drive of the movable volute 1, to achieve flexible adjustment of the angle of the first baffle 4 relative to the downdraft outlet, thereby precisely controlling the downdraft outlet angle. Addressing the impact of different room layouts, furniture placement, and the installation location of the ducted air unit 20 on airflow during heating mode, users can adjust the outlet angle as needed, ensuring the hot airflow trajectory precisely matches the actual scene. This effectively solves problems such as hot air accumulation and uneven local temperature, significantly improving air conditioning performance and user comfort.

[0046] In addition, in this embodiment, both the first baffle 4 and the second baffle 5 are designed to be movable, which can ensure that the movable volute 1 continues to rotate to the third position after reaching the second position. Moreover, the rotation of the movable volute 1 can synchronously drive the movement of the two baffles. This means that the volute device in this embodiment can be adapted to the existing duct air conditioner 20 by only changing the cooperation relationship of each component (movable volute 1, fixed volute 2, and double movable baffles). The overall structure is compact and the volume is optimized. It can be directly adapted to the installation space of the fan components of the existing duct air conditioner 20, reducing the cost of upgrading and modification.

[0047] In one exemplary embodiment, reference Figures 1 to 8As shown, a volute device, a fan assembly incorporating the volute device, and a duct air conditioner 20 incorporating the fan assembly are provided. In this embodiment, the volute device includes an arc-shaped track 7, which is fixedly connected to a fixed volute 2. A first baffle 4 includes a mating part that engages with the arc-shaped track 7, and the mating part is engaged with the arc-shaped track 7.

[0048] During the rotation of the movable volute 1 from the second position to the third position, the movable volute 1 drives the mating part to move along the arc-shaped track 7, thereby driving the first baffle 4 to move. That is, during the rotation of the movable volute 1 from the second position to the third position, since the second volute tongue 12 of the movable volute 1 is sealed and abutted against the first end of the first baffle 4, it can drive the first baffle 4 to move. The mating part of the first baffle 4 is engaged in the arc-shaped track 7. Therefore, during the movement of the first baffle 4, the mating part moves along the arc-shaped track 7, so that the movement of the first baffle 4 is more compatible with the rotation of the movable volute 1, ensuring that the movable volute 1 rotates smoothly.

[0049] The center of the movement trajectory of the mating part in the arc-shaped track 7 is the same as the center of the movement trajectory of the movable volute 1. That is, the center of the arc-shaped track 7 is the same as the center of the movement trajectory of the movable volute 1, thereby ensuring that the mating part and the movable volute 1 rotate concentrically, thus better ensuring that the movement of the first baffle 4 matches the rotation of the movable volute 1.

[0050] The first baffle 4 includes a first baffle 41 and a second baffle 42. The first baffle 41 and the second baffle 42 are rotatably connected. For example, they are rotatably connected by a rotating shaft. The mating part is disposed on the first baffle 41, and the first end of the first baffle 4 is the end of the first baffle 41 that is opposite to the second baffle 42. With this configuration, when the movable volute 1 rotates from the second position to the third position, since the movable volute 1 abuts against one end of the first baffle 41, the first baffle 41 can move with the rotation of the movable volute 1. At this time, the mating part and the first baffle 41 move synchronously along the arc track 7, while the second baffle 42 rotates relative to the first baffle 41 to prevent the first baffle 4 from protruding downwards too much, or even to ensure that the first baffle 4 does not protrude downwards, thereby reducing the housing size of the duct machine 20.

[0051] When the movable volute 1 moves to the third position, the second baffle 42 is parallel to the second baffle 5. That is, during the process of the movable volute 1 rotating from the second position to the third position, until it reaches the third position, the second baffle 5 will not protrude from the housing of the duct unit 20. This allows this embodiment to better adapt to the housing of the duct unit 20 of related technologies without increasing the size of the housing of the duct unit 20.

[0052] In this embodiment, when the movable volute 1 rotates, its second volute tongue 12 applies force to the first end of the first baffle 4 through a sealing contact, causing the first baffle 41 to move synchronously. At this time, the mating part on the first baffle 41 slides along the arc track 7. Under the concentric guidance of the arc track 7, the movement trajectory of the first baffle 41 and the rotation trajectory of the movable volute 1 remain concentric, ensuring that the two movements are precisely matched without interference or jamming. During the movement of the first baffle 41, the second baffle 42 rotates relative to the first baffle 41 through a rotating connection structure. This segmented rotation design can effectively prevent the first baffle 4 from protruding too much downward, or even completely prevent the first baffle 4 from protruding downward, thus completing the angle adjustment without expanding the housing space of the duct unit 20. For example, when the movable volute 1 reaches the third position, the second baffle 42 is parallel to the second baffle 5, forming a regular air outlet guide channel. And throughout the adjustment process, neither the first baffle 4 nor the second baffle 5 exceeds the housing range of the duct unit 20, and can be directly adapted to the existing housing size of the duct unit 20.

[0053] The first baffle 4 features a segmented rotation design, which, in conjunction with the concentric movement of the arc-shaped track 7 and the movable volute 1, prevents the first baffle 4 from protruding excessively or not at all during adjustment. Furthermore, when the movable volute 1 moves to the third position, the second baffle 42 is parallel to the second baffle 5, with no components extending beyond the housing of the duct unit 20 throughout the entire process. This eliminates the need to increase the existing housing size of the duct unit 20 to achieve the downward air outlet angle adjustment function, perfectly adapting to the existing model structure and significantly reducing product upgrade and modification costs. Additionally, the concentric design of the arc-shaped track 7 and the movable volute 1, when sliding along the track, drives the first baffle 41 to move concentrically, ensuring precise matching between the movement of the first baffle 4 and the rotation of the movable volute 1. This completely avoids movement interference and jamming issues, guaranteeing smooth rotation of the movable volute 1 and precise adjustment of the downward air outlet angle, thus improving the operational stability and service life of the device. Furthermore, in this embodiment, the arc-shaped track 7 is directly fixed to the fixed volute 2, and the segmented first baffle 4 achieves guidance and power transmission through the mating part, eliminating the need for additional guide supports, drive components, or enlarged housing space. This results in a compact structure with high integration. It simplifies the overall design, reduces the number of parts, lowers processing, assembly, and subsequent maintenance costs, and facilitates industrial-scale mass production and promotion.

[0054] In one exemplary embodiment, reference Figures 1 to 8As shown, a volute device, a fan assembly incorporating the volute device, and a duct fan 20 incorporating the fan assembly are provided. In this embodiment, when the movable volute 1 is in the second position, the first volute tongue 11 of the movable volute 1 is in sealed contact with the first end of the second baffle 5 facing the downdraft opening. The second baffle 5 is constructed as a movable baffle. Therefore, when the movable volute 1 rotates to the third position, the movable volute 1 can drive the second baffle 5 to move in the direction of opening the downdraft opening, ensuring the normal rotation of the movable volute 1 and thus adjusting the air outlet angle of the downdraft opening. However, when the movable volute 1 rotates from the third position to the second position or even the first position, the first volute tongue 11 of the movable volute 1 will separate from the first end of the second baffle 5, and the second baffle 5 cannot return to its original position with the rotation of the movable volute 1. Moreover, when the movable volute 1 rotates from the third position to the second position, the second volute tongue 12 of the movable volute 1 will also separate from the first end of the first baffle 4, and the first baffle 4 cannot return to its original position with the rotation of the movable volute 1.

[0055] Based on this, in this embodiment, reference Figures 9 to 11 As shown, the volute device includes a connecting rod 6, one end of which is connected to the first baffle 41. Furthermore, when the movable volute 1 is in the second position, the other end of the connecting rod 6 abuts against the side of the first end of the second baffle 5 facing the downwind outlet, or the other end of the connecting rod 6 is connected to the first end of the second baffle 5.

[0056] In some implementations... When the movable volute 1 is in the second position, the other end of the connecting rod 6 abuts against the side of the first end of the second baffle 5 facing the downwind outlet. In this embodiment, when the movable volute 1 needs to reset from the third position to the second position or even the first position, during the initial reset rotation of the movable volute 1, the first volute tongue 11 of the movable volute 1 separates from the first end of the second baffle 5, and the second volute tongue 12 of the movable volute 1 separates from the first end of the first baffle 4. At this time, neither the first baffle 4 nor the second baffle 5 will reset synchronously with the reset rotation of the movable volute 1, that is, the first baffle 4 and the second baffle 5 can remain fixed during this process. As the movable volute 1 continues to reset rotation, when the first volute tongue 11 of the movable volute 1 moves to abut against the first end of the first baffle 4, if the movable volute 1 continues to reset rotation, it will drive the first baffle 4 to reset until the movable volute 1 resets to the first position. At this time, the first baffle 4 resets to the initial position (as shown in the figure), but the second baffle 5 still has not reset.

[0057] As can be seen, in this embodiment, during the initial stage of the movable volute 1's reset, neither the first baffle 4 nor the second position can be reset. Therefore, it is necessary to additionally drive the first baffle 4 and the second baffle 5 to reset, so as to achieve the reset adjustment of the downward air outlet angle when the air outlet is downward. In this embodiment, when the movable volute 1 is in the second position, if the other end of the connecting rod 6 abuts against the side of the first end of the second baffle 5 facing the downward air outlet, then as the movable volute 1 rotates to the third position, the first baffle 4 and the second baffle 5 always move synchronously, and the first baffle 4 and the second baffle 5 always abut against each other. When it is necessary to reset and adjust the downward air outlet angle, that is, when the movable volute 1 needs to be reset and rotated from the third position to the second position, the reset of the second baffle 5 can be driven to drive the reset of the first baffle 4, thereby facilitating the reset adjustment of the downward air outlet angle.

[0058] In other implementations, The other end of the connecting rod 6 is connected to the first end of the second baffle 5. In this embodiment, when the movable volute 1 needs to be reset from the third position to the second position or even the first position, during the initial reset rotation of the movable volute 1, the first volute tongue 11 of the movable volute 1 separates from the first end of the second baffle 5, and the second volute tongue 12 of the movable volute 1 separates from the first end of the first baffle 4. At this time, neither the first baffle 4 nor the second baffle 5 will reset synchronously with the reset rotation of the movable volute 1, that is, the first baffle 4 and the second baffle 5 can remain fixed during this process. As the movable volute 1 continues to reset rotation, when the first volute tongue 11 of the movable volute 1 moves to abut against the first end of the first baffle 4, if the movable volute 1 continues to reset rotation, it will drive the first baffle 4 to perform a reset movement. Since the first baffle 4 is connected to the second baffle 5 through the connecting rod 6, the second baffle 5 will also perform a reset movement at this stage until the movable volute 1 resets to the first position. At this time, the first baffle 4 resets to the initial position (as shown in the figure), but the second baffle 5 is still not completely reset.

[0059] As can be seen, in this embodiment, during the initial stage of the movable volute 1's reset, neither the first baffle 4 nor the second position can be reset. Therefore, it is necessary to additionally drive the first baffle 4 and the second baffle 5 to reset, so as to achieve the reset adjustment of the downward air outlet angle during downward air outlet. In this embodiment, the other end of the connecting rod 6 is connected to the second baffle 5, so as the movable volute 1 rotates to the third position, the first baffle 4 and the second baffle 5 always move synchronously. When it is necessary to reset and adjust the downward air outlet angle, that is, when the movable volute 1 needs to reset and rotate from the third position to the second position, the reset of the second baffle 5 can be driven to drive the reset of the first baffle 4, thereby facilitating the reset adjustment of the downward air outlet angle. Of course, the reset of the first baffle 4 can also drive the reset of the second baffle 5, which is not limited to this.

[0060] The driving force for the first baffle 4 and the second baffle 5 to reset can be provided manually or automatically by the driving component, and there is no limitation on this.

[0061] Where the driving force for the first baffle 4 and the second baffle 5 to reset is provided by the driving assembly, the volute device may include a driving assembly (denoted as the first driving assembly, not shown in the figure). The first driving assembly may include a drive motor and a drive gear or a drive gear set for driving the movement of the second baffle 5. Of course, the first driving assembly may also be other combinations, which are not limited thereto.

[0062] During the process of the movable volute 1 resetting from the third position toward the direction of the second position, the first driving component drives the second baffle 5 to move toward closing the downwind vent, so that the second baffle 5 drives the first baffle 4 to reset via the connecting rod 6.

[0063] It should be noted that, in this embodiment, the process of the movable volute 1 resetting from the third position toward the direction of the second position refers to the process of the movable volute 1 resetting from a position other than the second position toward the direction of the second position when the lower air outlet of the volute device is in the open state. During this process, the position of the movable volute 1 before resetting can be the third position, or a position between the third and second positions; there is no limitation on this.

[0064] The volute assembly may further include another driving component, referred to as the second driving component. The second driving component drives the rotation of the movable volute 1 relative to the fixed volute 2. The second driving component may include a drive motor and a drive gear or a combination of drive gears, without limitation. Of course, the second driving component may also be in other combinations, without limitation.

[0065] In this embodiment, when the movable volute 1 needs to move from the direction of the second position to the direction of the third position to adjust the downward air outlet angle, the second drive component can drive the movable volute 1 to rotate relative to the fixed volute 2. The rotation of the movable volute 1 can drive the first baffle 4 and the second baffle 5 to move, thereby realizing the adjustment of the downward air outlet angle. When the movable volute 1 needs to move from the direction of the third position to the direction of the second position to reset the downward air outlet angle, the second drive component can first drive the movable volute 1 to rotate to the desired position, and then the first drive component can drive the second baffle 5 to perform a reset movement. The second baffle 5 drives the first baffle 4 to reset movement through the connecting rod 6 until the first end of the first baffle 4 seals against the second volute tongue 12 of the movable volute 1, thus completing the reset adjustment of the downward air outlet angle. In this way, the downward air outlet angle can be freely adjusted and reset to improve the user experience.

[0066] The fixed volute 2 may be equipped with a linear track 8 that cooperates with the second baffle 5. The linear track 8 is used to limit the movement trajectory of the second baffle 5. That is, when it is necessary to adjust or reset the lower air outlet angle, the second baffle 5 moves along the linear track 8. This arrangement can prevent the second baffle 5 from interfering with the rotation of the movable volute 1, and can also prevent the movement of the second baffle 5 from causing changes in the overall size of the volute device.

[0067] It should be noted that in this embodiment, when the connecting rod 6 is connected to the first end of the second baffle 5, the connecting rod 6 and the second baffle 5 are rotatably connected, thereby ensuring that the rotation of the first baffle 4 and the linear movement of the second baffle 5 are synchronized. When the movable volute 1 is in the second position, if the other end of the connecting rod 6 abuts against the side of the first end of the second baffle 5 facing the downwind opening, the connecting rod 6 may include a rod body 61 and a connecting end 62. The rod body 61 is rotatably connected to the end, and the end abuts against the side of the first end of the second baffle 5 facing the downwind opening, thereby ensuring that the rotation of the first baffle 4 and the linear movement of the second baffle 5 are synchronized.

[0068] The first end of the second baffle 5 can be constructed as a protrusion 51. The protrusion 51 and the body of the second baffle 5 can be integrally formed or separately connected, which is not limited. By setting the protrusion 51, the contact area or connection area between the first end of the second baffle 5 and the connecting rod 6 can be increased, thereby better ensuring the reliability of the fit between the first end of the second baffle 5 and the connecting rod 6.

[0069] This embodiment establishes a linkage between the first baffle 4 and the second baffle 5 through the connecting rod 6, providing two compatible connection methods (abutment or fixed connection). This ensures that when the movable volute 1 rotates to the third position, the first and second baffles 5 move synchronously and remain in contact, ensuring the continuity of the downward air outlet angle adjustment. It also specifically solves the problem of the baffles failing to reset synchronously during the initial reset phase of the movable volute 1 due to the separation of the volute tongue from the baffle. Through the force transmission of the connecting rod 6, a single drive (driving the second baffle 5 or the first baffle 4) can drive the other baffle to reset, filling the linkage gap in the early reset phase, avoiding baffle misalignment and incomplete reset, and ensuring the reliability of the downward air outlet angle adjustment and reset.

[0070] In addition, this embodiment features two drive components. The second drive component specifically drives the movable volute 1 to rotate, responsible for the active adjustment of the downward air outlet angle. The first drive component specifically drives the baffle to reset, with the two baffles resetting synchronously via the connecting rod 6. The two components have clear division of labor and work together effectively. This design achieves independent control of the movement of the movable volute 1 and the baffle, while ensuring precise contact between the baffle and the movable volute 1 during reset (the first baffle 4 and the second volute tongue 12 are in sealed contact). The angle can be freely adjusted and reset without manual intervention, improving the automation level of the device and avoiding component damage that may be caused by manual operation, thus optimizing the user experience.

[0071] In this embodiment, during the adjustment and reset of the movable volute 1, the connecting rod 6 always maintains the linkage posture of the double baffles, ensuring the sealing and contact effect between the first baffle 4 and the second volute tongue 12, and between the second baffle 5 and the first volute tongue 11 when the movable volute 1 is in the second position, thus avoiding airflow leakage and ensuring air outlet efficiency. At the same time, the limiting effect of the linear track 8 and the precise control of the dual drive components reduce the wear and offset of the baffle movement, reduce the risk of component failure, extend the overall service life of the device, and take into account both practicality and durability.

[0072] In this embodiment, the connecting rod 6, the dual drive assembly, and the linear track 8 are all modular designs that can be directly integrated into the existing volute device without requiring large-scale modifications to the core structure of the fixed volute 2 and the movable volute 1. All components (drive motor, gear set, connecting rod 6, track) use conventional and universal parts, with mature processing and assembly processes and controllable costs. This highly compatible design facilitates the rapid upgrade of existing duct air conditioner 20 products.

[0073] In one exemplary embodiment, reference Figures 1 to 11 As shown, a volute device, a fan assembly incorporating the volute device, and a duct fan 20 incorporating the fan assembly are provided. In this embodiment, the volute device can be a reversible volute device, rotating using a movable volute 1. The overall three-dimensional model is shown below. Figure 2 As shown (water tray not shown), from Figure 2 As can be seen in this embodiment, a centrifugal fan 3 is used for air intake and air delivery, and the volute device is divided into a fixed volute 2 and a movable volute 1.

[0074] Overall, the movable volute 1 has a gear structure. Under the action of the drive motor and the drive gear, it can rotate to two main working positions. A simplified schematic diagram is shown below. Figure 3 and Figure 5 The first and second positions are shown. In the first position, air exits from the side of the volute device; in the second position, air exits from the bottom of the volute device. It should be noted that the aforementioned gear structure, drive motor, and drive gear can constitute a second drive assembly.

[0075] The duct unit 20 in this embodiment may also include a rotating baffle 10. During the rotation of the movable volute 1, the rotating baffle 10 will also rotate at a certain angle to isolate the return air section and the outlet air section. Specifically, the two main rotation positions are as follows: Figure 3 and Figure 5 As shown, a sealing sponge (not shown in the figure) may be provided at the gap. It should be noted that during rotation, the rotation angle of the rotating baffle 10 and the rotation angle of the movable volute 1 can be the same or different; this is not limited. Furthermore, when their rotation angles are different, a separate drive motor is required to drive the rotation.

[0076] In this embodiment, the volute device is adjusted to the lower air outlet, and the movable volute 1 can continue to rotate to change the angle of the lower air outlet (current mainstream research generally believes that changing the airflow direction of the indoor unit's air outlet is more effective than guiding the airflow through the engineering air outlet).

[0077] like Figure 8 As shown in the cross-sectional view, an arc-shaped track 7 is designed on the fixed volute 2. The mating part of the first baffle 4 is set within the arc-shaped track 7. During movement, the first baffle 4 can move under the constraint of the arc-shaped track 7. In actual operation, the first baffle 4 serves as part of the air outlet of the volute device; therefore, it is necessary to ensure the sealing between the first baffle 4 and the movable volute 1. Simultaneously, to ensure that the movable volute 1 and the first baffle 4 maintain a seal throughout their movement, the arc-shaped track 7 and the rotation trajectory of the movable volute 1 are concentric. Therefore, the sealing performance can be basically guaranteed during operation.

[0078] On the other hand, from Figure 4 As can be seen, because the size of the side air vent needs to be guaranteed, the first baffle 4 needs to have a certain height (i.e., Figure 4 The height H of the first end of the first baffle 4 from the bottom wall of the fan assembly is crucial. If the height is too low, the angle of the side air outlet will be too low (towards the bottom wall), resulting in uneven airflow velocity between the upper and lower evaporators 9, thus affecting heat exchange efficiency. However, if the height is too high, the first baffle 4 may exceed the bottom wall of the duct unit 20 during rotation, leading to an oversized installation dimension of the duct unit 20 in the height direction. Furthermore, it requires precise control of the distance between the lower part of the duct unit 20 and the air outlet during installation, making installation difficult.

[0079] Therefore, in this embodiment, the first baffle 4 is configured as a segmented type, consisting of a first baffle 41 and a second baffle 42. During movement, the first baffle 4 can move in two segments. During this movement, the first baffle 41 and the second baffle 42 can rotate relative to each other, ensuring that the first baffle 4 does not protrude significantly beyond the bottom wall of the ductwork unit 20, or even not protrude at all.

[0080] Specific motion diagrams are as follows: Figure 4 , Figure 6 and Figure 8 As shown, when the ducted air conditioner 20 needs to discharge air downwards, the movable volute 1 can rotate under the drive of the first drive assembly. Figure 6 As shown in the diagram, the cross-section of the air outlet of the volute device blows downwards and forwards. It's important to note that in most cases, downward-forward blowing results in faster heating in heating mode. However, even with faster heating, there is an optimal solution, especially since the optimal angle for downward-forward blowing varies depending on the room type. Therefore, in this embodiment, the movable volute 1 can not only remain at... Figure 6 The position (i.e., the second position) is not fixed, but can continue to rotate, and can be rotated to such a position (i.e., the second position). Figure 8 The location is shown in the image. It should be noted that the active volute 1 is in... Figures 6 to 8 The airflow can be stopped at any position, meaning the volute device has more than two downward airflow positions. Furthermore, the second baffle 5 can also move during the rotation of the movable volute 1. Therefore, throughout the entire movement of the movable volute 1, the airflow angle of the volute device can change with the movement of the movable volute 1.

[0081] During the movement of the second baffle 5, it can move linearly along the straight track 8, while the first section of the first baffle 4, the first baffle 41, moves in a curved path (along the arc track 7). During the adjustment from side airflow to bottom airflow, and during the adjustment of the bottom airflow angle, because the second volute tongue 12 of the movable volute 1 is sealed against the first end of the first baffle 4, and the first volute tongue 11 of the movable volute 1 is sealed against the side of the first end of the second baffle 5 facing the bottom airflow, the first baffle 4 and the second baffle 5 can move along with the movable volute 1. However, during the process of resetting the bottom airflow angle, because the second volute tongue 12 of the movable volute 1 separates from the first end of the first baffle 4, and the first volute tongue 11 of the movable volute 1 separates from the side of the first end of the second baffle 5 facing the bottom airflow, the movable volute 1 can reset normally, while the first baffle 4 and the second baffle 5 cannot be reset by the movable volute 1.

[0082] In this embodiment, during the resetting of the downward air outlet angle, the movable volute 1 first rotates to the desired position, and then the second baffle 5 is reset via the first drive assembly. The resetting movement of the second baffle 5 drives the first baffle 4 to reset, thus both reaching the position where they cooperate and seal with the movable volute 1. The entire resetting process can be stopped at any position. Therefore, there is no jamming during user operation and switching, and the required downward air outlet angle can be adjusted at any time.

[0083] In this embodiment, the switching between upper (i.e., side air outlet) and lower air outlet is achieved through a reversing mechanism using a movable volute 1. A first baffle 4 and a rotating baffle 10 are used on the fixed volute 2 to achieve both side and lower air outlets. The first baffle 4 has a segmented structure, and a movable second baffle 5 is provided on the side of the fixed volute 2 forming the lower air outlet. Based on this, when the movable volute 1 switches to the lower air outlet, it can be further rotated to adjust the angle of the lower air outlet. During the adjustment of the lower air outlet angle, the first baffle 4 can rotate a larger angle without exceeding the bottom of the duct unit 20, and the second baffle 5 can move linearly along the straight track 8 on the fixed volute 2, with the direction of movement parallel to the bottom wall of the duct unit 20. During the process of resetting and adjusting the downward air outlet angle, the first baffle 4 and the second baffle 5 are connected by a connecting rod 6, so that when the movable volute 1 is reset and rotated, the first baffle 4 can also be quickly reset under the drive of the second baffle 5. Only the second baffle 5 needs to be configured with a first drive component, and there is no need to configure a drive component for the first baffle 4, thus reducing the setting of drive components.

[0084] In this embodiment, after the ducted air conditioner 20 switches to downward air outlet, the movable volute 1 can continue to rotate. Without increasing the overall size of the ducted air conditioner 20, the downward air outlet angle can be flexibly adjusted to make the downward air outlet angle more suitable for the current scene, improve the air conditioning effect, and thus improve the user experience.

[0085] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0086] It should be noted that the terms "one implementation," "embodiment," "exemplary embodiment," and "some embodiments" used in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0087] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or air conditioning apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or air conditioning apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or air conditioning apparatus that includes said element.

[0088] The above embodiments are merely preferred embodiments provided to fully illustrate this application, and the scope of protection of this application is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on this application are all within the scope of protection of this application.

Claims

1. A volute device, characterized in that, The volute device includes a fixed volute, a movable volute, and a first baffle. The fixed volute cooperates with the first baffle to form a side air vent and a downwind vent separated by the first baffle on the fixed volute. A second baffle is provided on one side of the fixed volute, and the second baffle is located on the side of the downwind vent opposite to the first baffle. The movable volute is movably disposed on the fixed volute. The movable volute has a first position where the side air vent is opened and the downwind vent is closed. The movable volute also has a second position where the downwind vent is opened and the side air vent is closed. When the movable volute is in the second position, the second volute tongue of the movable volute is in sealed contact with the first end of the first baffle, and the first volute tongue of the movable volute is in sealed contact with the side of the first end of the second baffle facing the downwind vent. The first baffle and the second baffle are respectively constructed as movable baffles. During the process of the movable volute rotating from the second position to the third position, it drives the first baffle to move closer to the downwind vent and drives the second baffle to move in the direction of opening the downwind vent, so as to adjust the air outlet angle of the downwind vent.

2. The volute device according to claim 1, characterized in that, The volute device includes an arc-shaped track, which is fixedly connected to the fixed volute. The first baffle includes a mating part that engages with the arc-shaped track, and the mating part is engaged with the arc-shaped track. As the movable volute rotates from the second position to the third position, the movable volute drives the mating part to move along the arc-shaped track.

3. The volute device according to claim 2, characterized in that, The movement trajectory of the mating part within the arc-shaped track has the same center as the movement trajectory of the movable volute.

4. The volute device according to claim 2, characterized in that, The first baffle includes a first baffle section and a second baffle section, the first baffle section and the second baffle section are rotatably connected, the mating part is disposed on the first baffle section, and the first end of the first baffle section is the end of the first baffle section that is opposite to the second baffle section.

5. The volute device according to claim 4, characterized in that, When the movable volute moves to the third position, the second section baffle is parallel to the second baffle.

6. The volute device according to claim 4, characterized in that, The volute device includes a connecting rod, one end of which is connected to the first section of the baffle. The other end of the connecting rod is connected to the first end of the second baffle, or, when the movable volute is in the second position, the other end of the connecting rod abuts against the side of the first end of the second baffle facing the downwind outlet.

7. The volute device according to claim 6, characterized in that, The volute device includes a first drive assembly. During the process of the movable volute resetting from the third position to the second position, the first drive assembly drives the second baffle to move in the direction of closing the downwind vent, so that the second baffle drives the first baffle to perform a reset movement through the connecting rod.

8. The volute device according to any one of claims 1-7, characterized in that, The fixed volute is provided with a linear track that cooperates with the second baffle, and the linear track is used to limit the movement trajectory of the second baffle.

9. A fan assembly, characterized in that, The fan assembly includes a centrifugal fan and a volute device as described in any one of claims 1-8.

10. A ducted air conditioner, characterized in that, The duct unit includes at least one fan assembly as described in claim 9.

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