Volute assembly and duct type air conditioner

Abstract

The utility model discloses a volute assembly and a duct type air conditioner, and the volute assembly comprises a movable volute which is rotatably arranged along the axis of the movable volute, and the movable volute is provided with a plurality of transmission matching structures which are arranged at intervals along the axis direction; the driving part is used for providing power; and the transmission assembly is in driving connection with the driving part, and the transmission assembly is in driving connection with all the transmission matching structures at the same time. According to the volute assembly and the wind pipe machine, the problem that in the prior art, a movable volute of a wind pipe machine swings in the rotating process is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more specifically, to a volute assembly and a duct air conditioner. Background Technology

[0002] Ductless air conditioners, also known as concealed air duct air conditioners, are widely used due to their low cost, ease of maintenance, and suitability for Chinese users' habits. These indoor units, installed on the upper wall or ceiling, typically have side-discharge airflow. During heating, the low density of hot air causes it to rise, failing to reach users in the lower part of the room. This results in uneven temperature distribution, with the upper part of the room being warmer than the lower, leading to a poor user experience.

[0003] Existing technology provides a method to switch the airflow direction of an air conditioner indoor unit to adjust the air outlet direction, mainly by using a rotatable movable volute to change the airflow direction. The housing has heating air outlets and cooling air outlets; the movable volute can rotate relative to the fixed volute to change the air outlet direction of the fan. This allows for different air inlet and outlet for cooling and heating modes. When cooling, air enters from the heating air outlet and exits from the cooling air outlet (generally side outlet); when heating, air enters from the cooling air outlet and exits from the heating air outlet (generally bottom outlet), thereby greatly alleviating the problem of hotter upper parts and colder lower parts of the room temperature distribution.

[0004] However, because the drive assembly of the movable volute uses a single drive mechanism and a simple transmission mechanism, the movable volute swings during rotation.

[0005] In existing technologies, the moving volute of the duct fan has a wobbling problem during rotation. Utility Model Content

[0006] This utility model provides a volute assembly and a duct air conditioner to solve the problem of oscillation during the rotation of the movable volute in the prior art.

[0007] To achieve the above objectives, this utility model provides a volute assembly, comprising: a movable volute rotatably disposed along its own axis, the movable volute being provided with a plurality of transmission engagement structures spaced apart along the axial direction; a driving component for providing power; and a transmission assembly drivenly connected to the driving component, the transmission assembly being simultaneously drivenly connected to all the transmission engagement structures.

[0008] Furthermore, the transmission assembly includes a transmission rod and multiple transmission components, which are spaced apart on the transmission rod. Each transmission component is correspondingly and connected to the transmission mating structure, and all transmission components rotate synchronously along the axis of the transmission rod.

[0009] Furthermore, the transmission engagement structure is a rack and pinion, the transmission component is a transmission gear, and all the transmission gears are coaxial.

[0010] Furthermore, the driving component is a stepper motor; the transmission assembly also includes a drive gear, the stepper motor is directly driven by the drive gear, and the drive gear meshes with any of the transmission gears.

[0011] Furthermore, the number of racks is at least two, with the two racks respectively disposed at both ends of the movable volute axially.

[0012] Furthermore, the movable volute includes two detachable sub-shells, and the rack is provided on the axial end of each sub-shell corresponding to the movable volute.

[0013] Furthermore, multiple snap-fit ​​combinations are provided circumferentially at the connection between the two sub-shells, allowing the two sub-shells to be disassembled and assembled along the axial direction of the movable volute.

[0014] Furthermore, a limiting plate is fixedly connected to the transmission rod, and the limiting plate is correspondingly arranged with the rack. The limiting plate is located on one side of the rack along the axial direction of the movable volute, and the limiting plate can stop the rack.

[0015] Furthermore, the limiting plate is an annular plate, the limiting plate is connected to the side of the transmission gear, and the outer contour diameter of the limiting plate is greater than or equal to the tip circle diameter of the transmission gear.

[0016] Furthermore, the limiting plate and the transmission gear are integrally formed.

[0017] Furthermore, the transmission component is limited and installed inside the drive box, and the drive box is fixedly connected to the assembly structure.

[0018] Furthermore, the transmission component and the transmission engagement structure form a chain drive engagement or a belt drive engagement.

[0019] According to another aspect of the present invention, a duct air conditioner is provided, including the above-described volute assembly.

[0020] Furthermore, the duct unit includes a fixed volute that cooperates with the movable volute, the movable volute being rotatable relative to the fixed volute, and the duct unit having an air outlet mode of side air outlet or bottom air outlet.

[0021] In this utility model's volute assembly, multiple transmission and engagement structures are arranged on the movable volute. A transmission component drives all these structures to rotate simultaneously, thereby driving the movable volute to rotate. This structural coordination ensures the overall synchronicity of the movable volute's rotation, ensuring that the corresponding parts of each transmission and engagement structure rotate synchronously. This eliminates local rotational lag in the movable volute, significantly reducing its swaying and increasing its operational stability. Furthermore, the significantly reduced swaying of the movable volute in the ductwork unit's structure minimizes the risk of structural interference and friction, reduces operating noise, ensures smooth operation of the ductwork unit, and improves structural stability. Attached Figure Description

[0022] Figure 1 This is a perspective view of the volute assembly according to an embodiment of the present utility model;

[0023] Figure 2 This is a side view of the volute assembly according to an embodiment of the present utility model;

[0024] Figure 3 This is a partial structural schematic diagram of the transmission component of the volute assembly according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram illustrating the structural fit between the transmission gear and the limiting plate of the volute assembly according to an embodiment of this utility model; and

[0026] Figure 5 This is a schematic diagram of the structural cooperation between the transmission component and the drive box of the volute assembly in an embodiment of this utility model. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0028] See Figures 1 to 5 As shown, according to an embodiment of the present invention, a volute assembly is provided. The volute assembly includes a movable volute 10, a driving component 20, and a transmission component 30. The movable volute 10 is rotatably disposed along its own axis, and the movable volute 10 is provided with a plurality of transmission engagement structures spaced apart along the axial direction. The driving component 20 is used to provide power and can drive the movable volute 10 to rotate. The transmission component 30 is drivenly connected to the driving component 20, and the transmission component 30 is simultaneously drivenly connected to all the transmission engagement structures.

[0029] In this utility model's volute assembly, multiple transmission and engagement structures are arranged on the movable volute. A transmission component drives all these structures to rotate simultaneously, thereby driving the movable volute to rotate. This structural coordination ensures the overall synchronicity of the movable volute's rotation, ensuring that the corresponding parts of each transmission and engagement structure rotate synchronously. This eliminates local rotational lag in the movable volute, significantly reducing its swaying and increasing its operational stability. Furthermore, the significantly reduced swaying of the movable volute in the ductwork unit's structure minimizes the risk of structural interference and friction, reduces operating noise, ensures smooth operation of the ductwork unit, and improves structural stability.

[0030] It should be noted that the transmission engagement structure works best at the beginning and end of the movable volute, and the number of such structures should not be excessive; otherwise, it will increase the structural weight and complexity, hindering structural simplification and reducing service life. The transmission engagement structure can take various forms; generally, it only needs to meet structural strength requirements and be able to drive the movable volute to rotate.

[0031] Preferably, the transmission assembly 30 includes a transmission rod 31 and a plurality of transmission components. The plurality of transmission components are spaced apart on the transmission rod 31. Each transmission component is correspondingly arranged with the transmission mating structure and is connected to it for transmission. All the transmission components rotate synchronously along the axis of the transmission rod 31.

[0032] The transmission rod 31, in conjunction with multiple transmission components, enables simple and efficient synchronous rotation of all components. The transmission rod boasts advantages such as low structural weight, low cost, high structural strength, and structural stability. The transmission rod 31 can be fitted with weight-reducing holes and a hollowed-out structure according to specific structural strength requirements.

[0033] Combination Figures 1 to 3 As shown, in this embodiment, the transmission mechanism is a rack 11, the transmission component is a transmission gear 32, and all the transmission gears 32 are coaxial.

[0034] The rack 11 extends circumferentially along the movable volute. Due to the limited rotation angle of the movable volute, the length of the rack is also limited. Under the rotation of the transmission gear 32, the rack 11, meshing with the transmission gear 32, moves and drives the movable volute to rotate along its axis. All transmission gears 32 are coaxial, ensuring that the travel distance of each rack 11 is the same, making the rotation of the movable volute synchronized at the rack positions. This effectively improves the smoothness of the movable volute and significantly reduces its oscillation. The meshing fit between the rack and the transmission gear is ideal for driving the movable volute, resulting in stable transmission, high structural strength, resistance to damage, and a stable and reliable structure.

[0035] See Figure 1The driving component 20 is a stepper motor; the stepper motor can rotate in both directions, and in conjunction with the transmission gear and rack, it enables the movable volute to rotate reciprocally, realizing the up-and-down reverse airflow function of the duct unit. The transmission assembly 30 also includes a drive gear 33, which is directly driven by the stepper motor, and the drive gear 33 meshes with any of the transmission gears 32.

[0036] The output shaft of the stepper motor is coaxial with and rotates synchronously with the drive gear. When the drive gear rotates, it meshes with the corresponding transmission gear, thereby driving all the transmission gears on the transmission rod 31 to rotate. The above-described structure is simple, efficient, and highly stable, and is less prone to problems such as disengagement or failure to transmit power.

[0037] Preferably, the number of racks 11 is at least two, wherein the two racks 11 are respectively disposed at both ends of the movable volute 10 in the axial direction.

[0038] By placing two racks at the beginning and end of the movable volute, the rotation of the two ends of the movable volute can be kept synchronized, which greatly reduces the swaying of the movable volute during rotation and ensures the overall stability. This allows the movable volute to rotate within a reasonable and preset track.

[0039] In this embodiment, the movable volute 10 includes two detachable sub-shells 12, and the rack 11 is provided on the sub-shells 12 corresponding to the axial ends of the movable volute 10.

[0040] Combination Figure 1 and Figure 2 As shown, the movable volute 10 is composed of two sub-shells 12. This structure allows the duct unit to be disassembled layer by layer in the axial direction during disassembly, reducing the difficulty of maintenance, preventing damage to parts during maintenance, and improving maintenance efficiency.

[0041] Preferably, the connection between the two housings 12 is provided with a plurality of snap-fit ​​fasteners along the circumferential direction, and the two housings 12 can be disassembled and assembled along the axial direction of the movable volute 10.

[0042] The snap-fit ​​assembly consists of snap-fits and slots, which can be staggered on the two housings. The snap-fit ​​connection facilitates quick installation and makes it convenient for maintenance personnel to install the two housings in the dimly lit interior environment of the duct unit. It also allows maintenance personnel to quickly assemble the two housings even when they cannot see them completely.

[0043] See Figure 1 , Figure 3 and Figure 4A limiting plate 34 is fixedly connected to the transmission rod 31. The limiting plate 34 is correspondingly arranged with the rack 11. The limiting plate 34 is arranged on one side of the rack 11 along the axial direction of the movable volute 10. The limiting plate 34 can stop the rack 11.

[0044] The position of the limiting plate 34 corresponds to that of the rack 11. When the movable volute 10 undergoes a certain axial displacement, the limiting plate 34 abuts against the surface of one side of the rack to stop the rack and the movable volute containing the rack, preventing further axial displacement of the movable volute. The position and structural fit of the limiting plate 34 prevent the movable volute from generating large axial displacement or axial movement during rotation, ensuring that the movable volute always rotates within the specified track, avoiding structural interference or friction, improving operational stability, and ensuring long-term stable operation of the structure.

[0045] In this embodiment, the limiting plate 34 is an annular plate, which is connected to the side of the transmission gear 32. The outer diameter of the limiting plate 34 is greater than or equal to the tip circle diameter of the transmission gear 32. The shape and size of the limiting plate are fully capable of stopping the rack.

[0046] The limiting plate 34 is connected and engaged with the transmission gear 32, which makes full use of the structural space of the transmission gear and reduces the space occupancy rate. At the same time, it integrates the relationship between the limiting plate and the rack, so that the limiting plate and the transmission gear are concentrated in one position, and the limiting and transmission are formed in one position, resulting in a compact and reliable structure.

[0047] Preferably, the limiting plate 34 and the transmission gear 32 are integrally formed.

[0048] To further enhance structural reliability, the limiting plate and transmission gear are made into a single molded structure. This ensures that the stresses from both transmission and limiting are distributed across the same structure, avoiding potential connection detachment and structural failure due to stress concentration at the connection points. The single-piece molding also helps reduce production costs, structural complexity, and the number of parts.

[0049] See Figure 5 The transmission component 30 is limited and installed inside the drive box 40, and the drive box 40 is fixedly connected to the assembly structure.

[0050] The drive box is fixedly connected to the assembly structure, typically a reliable component inside the duct unit, such as the fixed volute. The drive box remains stationary, and the transmission components, limited by their installation within the drive box, will not experience excessive displacement. This ensures that the transmission components maintain a stable transmission relationship with the moving volute, thereby reducing volute sway and improving its operational smoothness.

[0051] In other embodiments not shown in the figure, the difference between the volute assembly and the above embodiments lies mainly in the specific structural form of the transmission component and the transmission engagement structure. In other embodiments, the transmission component and the transmission engagement structure form a chain drive engagement or a belt drive engagement.

[0052] Chain drives and belt drives are both stable and efficient transmission mechanisms that can be used in the rotation of moving volutes. The configuration of chain drives and belt drives can be tailored to the specific structural requirements of the machine.

[0053] This utility model provides an embodiment of a duct air conditioner, which includes the aforementioned volute assembly.

[0054] Preferably, the duct air conditioner includes a fixed volute that cooperates with the movable volute, the movable volute being rotatable relative to the fixed volute, and the duct air conditioner having an air outlet mode of side air outlet or bottom air outlet.

[0055] The duct air conditioner of this embodiment solves the problem of swaying when the movable volute rotates in the prior art, making the rotation of the movable volute more stable and more reliable.

[0056] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0057] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0058] Of course, the above are preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the basic principles of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A volute assembly, characterized in that, include: The movable volute (10) is rotatably arranged along its own axis, and the movable volute (10) is provided with a plurality of transmission and engagement structures spaced apart along the axial direction; Drive component (20) for providing power; The transmission assembly (30) is driven to connect with the drive component (20), and the transmission assembly (30) is simultaneously driven to connect with all the transmission mating structures.

2. The volute assembly according to claim 1, characterized in that, The transmission assembly (30) includes a transmission rod (31) and multiple transmission components. The multiple transmission components are spaced apart on the transmission rod (31). Each transmission component is correspondingly connected to the transmission mating structure and is connected in transmission. All the transmission components rotate synchronously along the axis of the transmission rod (31).

3. The volute assembly according to claim 2, characterized in that, The transmission mechanism is a rack (11), the transmission component is a transmission gear (32), and all the transmission gears (32) are coaxial.

4. The volute assembly according to claim 3, characterized in that, The driving component (20) is a stepper motor; The transmission assembly (30) further includes a drive gear (33), the stepper motor is directly driven by the drive gear (33), and the drive gear (33) meshes with any of the transmission gears (32).

5. The volute assembly according to claim 3, characterized in that, The number of racks (11) is at least two, with the two racks (11) respectively disposed at both ends of the axial direction of the movable volute (10).

6. The volute assembly according to claim 5, characterized in that, The movable volute (10) includes two detachable sub-shells (12), and the rack (11) is provided on the axial end of the sub-shell (12) corresponding to the movable volute (10).

7. The volute assembly according to claim 6, characterized in that, The connection between the two sub-shells (12) is provided with multiple snap-fit ​​combinations along the circumferential direction, and the two sub-shells (12) can be disassembled and assembled along the axial direction of the movable volute (10).

8. The volute assembly according to claim 3, characterized in that, A limiting plate (34) is fixedly connected to the transmission rod (31). The limiting plate (34) is correspondingly arranged with the rack (11). The limiting plate (34) is arranged on one side of the rack (11) along the axial direction of the movable volute (10). The limiting plate (34) can stop the rack (11).

9. The volute assembly according to claim 8, characterized in that, The limiting plate (34) is an annular plate. The limiting plate (34) is connected to the side of the transmission gear (32). The outer contour diameter of the limiting plate (34) is greater than or equal to the tooth tip circle diameter of the transmission gear (32).

10. The volute assembly according to claim 9, characterized in that, The limiting plate (34) and the transmission gear (32) are integrally formed.

11. The volute assembly according to claim 8, characterized in that, The transmission component (30) is limited and installed inside the drive box (40), which is fixedly connected to the assembly structure.

12. The volute assembly according to claim 2, characterized in that, The transmission component and the transmission mating structure form a chain drive mating or a belt drive mating.

13. A ducted air conditioner, characterized in that, The volute assembly includes any one of claims 1 to 12.

14. The duct air conditioner according to claim 13, characterized in that, The ducted air handling unit includes a fixed volute that cooperates with the movable volute. The movable volute is rotatable relative to the fixed volute. The ducted air handling unit has an air outlet mode of side air outlet or bottom air outlet.

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