Volute tongue, volute, fan and duct type air conditioner

Abstract

The invention relates to the technical field of fans, and discloses a volute tongue, a volute, a fan and a duct type air conditioner. The volute tongue is provided with an inner concave part, and the inner concave part comprises a bottom wall; the two connecting sections are connected to the two ends, in the length direction, of the bottom wall correspondingly, and the two connecting sections and the bottom wall jointly form an inner concave part; wherein one connecting section comprises a plurality of connected arc-shaped wall sections, and the arc-shaped wall sections incline downwards in the direction close to the bottom wall. Friction loss of airflow and the inner wall of the volute tongue is reduced, so that noise caused by airflow separation and turbulent flow is effectively weakened, and the use comfort of a user is improved.

Description

Technical Field

[0001] This application relates to the field of fan technology, such as a volute tongue, volute casing, fan, and duct fan. Background Technology

[0002] Currently, with the improvement of people's living standards, temperature is no longer the only goal people pursue when purchasing air conditioners. People are paying more and more attention to the comfort of air conditioning. Noise is an important factor affecting the comfort of air conditioning, among which aerodynamic noise is the main source of noise in the indoor unit of the air conditioner.

[0003] Aerodynamic noise primarily originates from the fan, which consists of a volute and an impeller. The volute contains a volute tongue, which guides the airflow discharged from the impeller along a predetermined trajectory, preventing airflow diffusion or turbulence. In related technologies, aerodynamic noise is typically reduced by improving the profile of the volute.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art: In related technologies, the volute tongue is generally a single arc or planar structure, which leads to more intense impact and friction between the airflow and the volute tongue when the airflow passes through, resulting in still relatively high noise from the fan.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a volute tongue, a volute housing, a fan, and a duct fan to reduce fan noise.

[0008] This disclosure provides a volute tongue, which has a concave portion, the concave portion including: a bottom wall; The connecting segment consists of two segments that are connected to the two ends of the bottom wall along its length and together with the bottom wall form a concave portion. Each connecting segment includes multiple connected arc-shaped wall segments, and all of the arc-shaped wall segments are inclined downward toward the bottom wall.

[0009] This disclosure also provides a volute, which includes a volute tongue as described in any of the above embodiments.

[0010] This disclosure also provides a fan, which includes a volute as described in any of the above embodiments.

[0011] This disclosure also provides a duct air conditioner, which includes a fan as described in any of the above embodiments.

[0012] The volute, volute housing, fan, and duct air conditioner provided in this disclosure can achieve the following technical effects: In this embodiment, a connecting section employs a design of multiple interconnected arc-shaped wall segments, which, combined with an inclined layout along the length of the volute tongue towards the bottom wall, form a guiding channel highly adapted to the airflow trajectory. This effectively reduces airflow resistance, suppresses turbulence and eddies, and allows airflow to be more smoothly guided from the fan outlet to the heat exchanger and air outlet. The structure of multiple arc-shaped wall segments avoids abrupt airflow impacts at the connecting section, and the inclination of the arc-shaped wall segments further optimizes the airflow trajectory, reducing frictional losses between the airflow and the inner wall of the volute tongue. This effectively weakens noise caused by airflow separation and turbulence, improving user comfort.

[0013] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0014] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is a structural schematic diagram of a ducted air handling unit provided in an embodiment of the present disclosure from one perspective; Figure 2 This is a schematic diagram of the structure of another ducted air handling unit provided in this embodiment of the present disclosure from one perspective; Figure 3 This is a partial structural schematic diagram of a duct air conditioner provided in an embodiment of this disclosure; Figure 4 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 5 This is a partial cross-sectional schematic diagram of another duct air conditioner provided in this embodiment of the present disclosure; Figure 6 This is a partial cross-sectional schematic diagram of another duct air conditioner provided in this embodiment of the present disclosure; Figure 7 This is a schematic diagram of the structure of a water receiving tray provided in an embodiment of this disclosure; Figure 8 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 9 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 10This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 11 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 12 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 13 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 14 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 15 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 16 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 17 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 18 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 19 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 20 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 21 This is a schematic diagram of a front panel structure provided in an embodiment of this disclosure; Figure 22 This is a schematic diagram of the structure of a fan provided in an embodiment of this disclosure; Figure 23 This is a schematic diagram of the structure of a volute provided in an embodiment of this disclosure; Figure 24 This is a schematic cross-sectional view of a volute provided in an embodiment of this disclosure; Figure 25 This is a schematic diagram of another ductwork unit provided in this embodiment of the present disclosure; Figure 26 This is a schematic diagram of the structure of a first grid segment provided in an embodiment of this disclosure; Figure 27 This is a partial structural schematic diagram of another ducted air handling unit provided in this embodiment of the present disclosure; Figure 28 This is a cross-sectional structural schematic diagram of another duct machine provided in this embodiment of the present disclosure; Figure 29 This is a schematic diagram of the structure of a first filter screen provided in an embodiment of this disclosure; Figure 30This is a schematic diagram of the structure of a third filter provided in an embodiment of this disclosure; Figure 31 This is a schematic diagram of another ductwork unit provided in this embodiment of the present disclosure; Figure 32 This is a schematic diagram of another ductwork unit provided in this embodiment of the present disclosure; Figure 33 This is a schematic diagram of another ductwork unit provided in this embodiment of the present disclosure; Figure 34-1 This is a simulation diagram of the air outlet of the volute in a related art provided by an embodiment of this disclosure; Figure 34-2 This is a simulation diagram of the air outlet of the volute in another related technology provided in this disclosure embodiment; Figure 35-1 This is a simulation diagram of the air outlet of a volute provided in an embodiment of this disclosure; Figure 35-2 This is a schematic diagram of the air outlet simulation of a volute provided in an embodiment of this disclosure.

[0015] Figure label: 10. Casing; 11. Box; 111. Connecting port; 112. Top plate; 113. Bottom plate; 114. First side wall; 115. Second side wall; 116. First air inlet; 117. Second air inlet; 12. Front panel; 121. Air outlet; 122. Limiting rib; 13. Oscillating blade; 131. First oscillating blade assembly; 132. Second oscillating blade assembly; 134. First connecting rod; 135. First motor; 136. Second connecting rod; 137. Second motor; 14. Partition; 141. First space; 142. Second space; 1421. Removal port; 20. Heat exchanger; 21. Connecting part; 22. Heat exchanger body; 221. First tube sheet; 222. Second tube sheet; 231. First mounting bracket; 232. Second mounting bracket; 25. Heat exchanger tube assembly; 30. Fan assembly; 31. Volute; 311. First volute; 312. Second volute; 33. Motor bracket; 331. Positioning column; 34. Impeller; 35. Fan motor; 36. Fixing plate; 361. Positioning hole; 362. Support plate; 363. Connecting flange; 37. Volute tongue; 371. Recess; 372. Bottom wall; 373. Connecting section; 374. First arc-shaped wall section; 375. Second arc-shaped wall section; 376. First wall surface; 40. Electrical control box; 41. Box cover. ; 411. Mounting cavity; 42. Computer board; 43. Box body; 431. Maintenance port; 432. Back plate; 433. First flange; 434. Second flange; 44. First connecting edge; 441. Snap-fit ​​edge; 442. Snap-fit ​​groove; 45. Second connecting edge; 451. Insertion groove; 452. Insertion protrusion; 50. Water pump; 51. Water pump body; 52. Water pipe; 53. Water tray; 54. Disassembly port; 541. Disassembly plate; 60. Partition plate; 61. First partition plate; 611. First through hole; 62. Second partition plate; 621. Second through hole; 63. Flanged edge; 64. Clearance groove; 70. First filter screen; 71 711. First slide rail; 712. First inlet / outlet; 713. Snap-fit ​​structure; 72. Second filter; 721. Magnetic suction element; 73. Second slide rail; 731. Second slide rail; 732. Third filter; 733. Second inlet / outlet; 74. Limiting rib; 751. Assembly hole; 76. Handle; 80. Grille; 81. First air outlet; 811. Return air outlet; 82. Second air outlet; 821. Supply air outlet; 83. Grille section; 84. Filter; 85. Track; 851. First limiting protrusion; 852. Second limiting protrusion; 853. Handle protrusion; 86. First grille section; 87. Second grille section. Detailed Implementation

[0016] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0017] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure 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 for describing embodiments of this disclosure herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0018] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0019] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0020] Unless otherwise stated, the term "multiple" means two or more.

[0021] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0023] For ease of description, the length direction and depth direction in this application are as follows: Figure 1 and Figure 2 As shown.

[0024] Combination Figures 1 to 33 As shown, this embodiment of the present disclosure provides a ducted air conditioner, which includes a housing 10 defining a receiving cavity having an air inlet and an air outlet 121. The ducted air conditioner also includes a fan assembly 30 and a heat exchanger 20, both located within the receiving cavity. The fan assembly 30 includes a fan that drives the airflow from the air inlet to flow through the heat exchanger 20 to exchange heat and form heat-exchanged air, and drives the heat-exchanged air to flow out from the air outlet 121.

[0025] Optionally, the housing 10 includes a box 11 defining a receiving cavity with a communication port 111 for air intake and / or air exhaust. Optionally, the communication port is located on the front side of the receiving cavity, and / or the communication port can communicate with the air inlet or air outlet of the ducted air conditioner. Optionally, the communication port can also be used directly as the air inlet or air outlet of the ducted air conditioner.

[0026] Optionally, the housing 10 includes a front panel 12, which is located at the communication port 111. The front panel 12 has an air outlet 121 that communicates with the communication port and is connected to the receiving cavity through the communication port 111. The air inlet is located on one or more of the rear, side, top, and bottom of the housing 11.

[0027] Optionally, the front panel is detachably located at the connection port, so that the connection port can be exposed after the front panel is removed, facilitating the disassembly of components inside the receiving cavity. Optionally, the cross-sectional area of ​​the connection port is larger than the cross-sectional area of ​​the air outlet to increase the disassembly space.

[0028] Optionally, the heat exchanger 20 and the fan are arranged sequentially along the flow direction of the airflow within the cavity. The airflow driven by the fan flows into the air inlet, passes through the heat exchanger 20, and then flows out from the air outlet 121. In this way, the heat exchanger 20 is positioned close to the air inlet, and the fan assembly 30 is positioned close to the air outlet 121, ensuring the air volume and air efficiency of the ducted air conditioner.

[0029] Optionally, the ducted air conditioner is suitable for installation in a suspended ceiling space, with a reserved opening in the suspended ceiling space. The air outlet 121 is adapted to correspond to the reserved opening. The outer side of the casing 10 and the wall of the suspended ceiling space form an air inlet channel. The outlet end of the air inlet channel is connected to the air inlet. External airflow flows into the receiving cavity through the air inlet channel and the air inlet. Optionally, the air inlet end of the air inlet channel and the air outlet 121 are located on the same side of the ducted air conditioner. Both the air inlet end of the air inlet channel and the air outlet 121 correspond to and are connected to the reserved opening. In this way, the indoor airflow enters the receiving cavity through the reserved opening, the air inlet channel, and the air inlet, and the heat exchange air flowing out of the air outlet 121 flows out through the reserved opening.

[0030] Optionally, the air inlet is located on the rear side wall of the housing 10 or on one or two side walls along the length of the housing 10.

[0031] Optionally, the air inlet channel is located on one or both sides of the length of the housing 10. In this way, the air inlet end and the air outlet 121 of the air inlet channel are set along the length of the duct air conditioner. The airflow flowing into the air inlet channel can flow into the receiving cavity from the rear or side of the housing 10, which can ensure the smoothness of air inlet and outlet, and also avoid the thickness of the duct air conditioner from becoming thicker, thus improving the ease of installation.

[0032] In some optional embodiments, air inlet channels are provided on both sides along the length of the ducted air conditioner. The air inlet includes a first air inlet 116, which is located on the rear side of the housing 10. The air inlet end of the air inlet channel is located on the front side, and the airflow on the front side flows into the receiving cavity from the first air inlet 116 on the rear side through the air inlet channel. The fan-driven airflow flows through the heat exchanger 20 and the fan and then flows out from the air outlet 121 on the front side, so that the air inlet and outlet of the ducted air conditioner achieves forward and forward airflow.

[0033] Optionally, a second air inlet 117 is provided on one side wall along the length of the duct unit. The air inlet includes the second air inlet 117. The airflow in the air inlet channel corresponding to the second air inlet 117 can also flow into the receiving cavity through the second air inlet 117, and then flow out from the air outlet 121 after passing through the heat exchanger 20 and the fan in sequence.

[0034] Optionally, the reserved opening is equipped with a grille 80, which covers the air outlet 121 and the air inlet end of the air inlet channel. The grille 80 has a return air inlet 811 and a supply air outlet 821. The supply air outlet 821 is connected to the air outlet 121, and the return air outlet 811 is connected to the air inlet end of the air inlet channel. When the ducted air unit is working, the supply air outlet 821 of the grille 80 supplies air, and the return air outlet 811 of the grille 80 returns air. In this way, after the ducted air unit is installed, only one reserved opening is needed in the ceiling to realize air inlet and outlet. This not only improves the neatness and aesthetics of the ducted air unit after installation, but also improves the convenience of installation. In addition, there is no need to open a reserved opening at the bottom of the ceiling. This allows home appliances and furniture to be placed under the ceiling, avoiding the problem of interference between the reserved opening at the bottom of the ducted air unit and other home appliances, thereby improving the user experience.

[0035] Optionally, the ducted air conditioner includes a heat exchanger 20 and a fan assembly 30, which are located within a housing cavity, and the airflow directions of the heat exchanger 20 and the housing cavity are arranged sequentially. Here, the heat exchanger 20 is located between the air inlet and the fan assembly 30, such that the fan assembly 30 is positioned close to the air outlet 121.

[0036] Optionally, the heat exchanger 20 includes a first heat exchange section and a second heat exchange section connected to each other. The first heat exchange section and the second heat exchange section are bent. The first heat exchange section extends along the length direction of the duct unit, and the second heat exchange section extends along the depth direction of the duct unit. The first heat exchange section is located between the first air inlet 116 and the fan assembly 30, and the second heat exchange section is located between the second air inlet 117 and the fan assembly 30. In this way, at least part of the airflow flowing into the first air inlet 116 can flow through the first heat exchange section for heat exchange and then flow out from the air outlet 121, and at least part of the airflow flowing into the second air inlet 117 can flow through the second heat exchange section and then flow out from the air outlet 121.

[0037] Optionally, the heat exchanger 20 can be a straight plate extending along the length of the duct unit, or the heat exchanger 20 can be arc-shaped with the arc opening facing or away from the air outlet 121, or the heat exchanger 20 can be U-shaped. Optionally, the fan can be a centrifugal fan, a cross-flow fan, or an axial fan.

[0038] Optionally, the ducted air conditioner also includes an electrical control box 40, which is electrically connected to multiple components within the ducted air conditioner. The electrical control box 40 and the air outlet 121 are located on the same side of the ducted air conditioner, so that when the grille 80 is opened, both the air outlet 121 and the electrical control box 40 can be exposed, facilitating the maintenance of the electrical control box 40. Optionally, the air inlet end of the air inlet duct, the air outlet 121, and the electrical control box 40 are all located on the same side of the ducted air conditioner. This way, the air inlet end, the air outlet 121, and the maintenance end of the ducted air conditioner are all located on the same side of the ducted air conditioner and are all connected to the reserved openings. Thus, when the grille 80 is opened, the air inlet, the air inlet duct, and the electrical control box 40 can be maintained simultaneously.

[0039] In some alternative embodiments, such as Figures 1 to 7 As shown, the electrical control box 40 includes a box body 43, a box cover 41, and a computer board 42. The box body 43 defines an installation cavity 411 with a maintenance port 431. The box cover 41 is movably disposed in the maintenance port 431 to open or close the maintenance port 431. The computer board 42 is located inside the installation cavity 411. The computer board 42 is inclined relative to the maintenance port 431.

[0040] In this embodiment, the computer board 42 is tilted relative to the maintenance port 431, so that the operating end of the computer board 42 is not directly facing the maintenance port 431. This results in different distances between the computer board 42 and the maintenance port 431, allowing maintenance personnel to operate from the end of the computer board 42 that is farther from the maintenance port 431. This improves operational convenience, avoids spatial limitations imposed by surrounding components and the installation environment (such as walls), and ensures that maintenance personnel have sufficient operating space.

[0041] Optionally, the distance between the computer board 42 and the cover 41 may vary along the length or height of the control box 40. In this embodiment, the different distances between the computer board 42 and the cover 41 along the length or height of the control box 40 allow for a tilted layout of the computer board 42, forming a spatial structure that adapts to the disassembly path and ensures smooth tilting and disassembly.

[0042] Optionally, the box body 43 includes a back panel 432, which is disposed opposite to the box cover 41, and the tilt direction of the back panel 432 matches the tilt direction of the computer board 42.

[0043] In this embodiment, the backplate 432 is tilted in the same direction as the computer board 42, so that the internal space of the control box 40 forms a uniform tilt angle. This ensures the flatness and stability of the computer board 42 installation, optimizes the internal wiring space, avoids wire tangling and interference, and improves the consistency and reliability of the overall structure of the control box 40.

[0044] Optionally, the electrical control box 40 includes a first end and a second end disposed along its length. Along the direction from the first end to the second end, the computer board 42 is inclined away from the box cover 41 or inclined towards the box cover 41. Here, the length direction of the electrical control box 40 refers to the length direction of the duct machine.

[0045] In this embodiment, the computer board 42 is tilted along the length of the control box 40. When the control box 40 is installed on the front side of the duct air conditioner, the computer board 42 can be tilted away from the cover 41 in the direction closer to the air outlet 121. This way, when there is a wall or other component on the side of the control box 40 away from the air outlet 121, the operating space of the computer board 42 is closer to the air outlet 121, increasing the shoulder space for maintenance personnel, improving the maintenance space of the computer board 42, and facilitating the disassembly of the computer board 42. Alternatively, the computer board 42 can be tilted away from the cover 41 in the direction away from the air outlet 121. This arrangement ensures sufficient space on the side of the control box 40 away from the air outlet 121, and also reduces interference between maintenance of the control box 40 and maintenance at the air outlet 121.

[0046] Alternatively, the back panel 432 may be tilted away from the lid 41, or the computer board 42 may be tilted towards the lid 41.

[0047] Optionally, the angle between the extension direction of the computer board 42 and the length direction of the electrical control box 40 is greater than or equal to 5° and less than or equal to 45°, or the angle between the extension direction of the computer board 42 and the length direction of the electrical control box 40 is greater than or equal to 5° and less than or equal to 20°.

[0048] In this embodiment, the tilt angle of the computer board 42 is within the above-mentioned range, which ensures that the tilt angle of the computer board 42 is sufficient to avoid space limitations, and avoids that the tilt angle is too large, which would lead to waste of internal space of the control box 40 or unstable installation of the computer board 42.

[0049] Optionally, the tilt angle of the back panel 432 is the same as or similar to the tilt angle of the computer board 42.

[0050] Optionally, the box body 43 further includes a first flange 433 and a second flange 434. The first flange 433 is located at the top of the back panel 432 and extends toward the box cover 41. The second flange 434 is located at the bottom of the back panel 432 and extends toward the box cover 41. The width of the first flange 433 gradually increases as the distance between the computer board 42 and the box cover 41 gradually increases. And / or, the width of the second flange 434 gradually increases as the distance between the computer board 42 and the box cover 41 gradually increases.

[0051] In this embodiment, the housing 43 has a first flange 433 and a second flange 434, which improves the strength and stability of the housing 43, ensures even stress distribution, prevents deformation, and facilitates the connection between the housing 43 and the cover 41. Furthermore, the first flange 433 and the second flange 434 enhance the sealing and protection of the sides of the electrical control box 40, effectively preventing dust and moisture from entering the mounting cavity 411 and protecting electrical components such as the computer board 42.

[0052] Optionally, one end of the lid 41 is detachably connected to one end of the body 43, and the other end of the lid 41 is rotatably and / or detachably connected to the other end of the body 43.

[0053] In this embodiment, the cover 41 can be completely removed from the box body 43, so that the cover 41 will not interfere with other components and ensure maintenance space. The cover 41 can also be rotated open while remaining connected to the box body 43, so that there is no need to place an additional cover 41.

[0054] Optionally, the box body 43 further includes a first connecting edge 44, which is located at the other end of the box body 43 and extends toward the lid 41; wherein, the other end of the lid 41 is provided with a snap-fit ​​groove 442, and the other end of the first connecting edge 44 is provided with a snap-fit ​​edge 441, which is inserted into the snap-fit ​​groove 442, and when the lid 41 is opened, the snap-fit ​​groove 442 can rotate around the snap-fit ​​edge 441 by a preset angle and then separate from the snap-fit ​​edge 441.

[0055] In this embodiment, the snap-fit ​​edge 441 engages with the snap-fit ​​groove 442, which can fix the cover 41 and the box body 43 in a fixed position, avoiding misalignment during installation. It also enhances the stability of the cover 41 after it is closed, preventing the cover 41 from loosening due to vibrations during duct operation. Furthermore, the cover 41 can be rotated around the snap-fit ​​edge 441 by a preset angle to separate, thus preventing the cover 41 from jamming with the box body 43 and improving the flexibility and convenience of disassembling the cover 41.

[0056] Optionally, the box body 43 further includes a second connecting edge 45, which is located at one end of the box body 43 and extends toward the lid 41; wherein, one of the second connecting edge 45 and one end of the lid 41 is provided with an insertion groove 451, and the other of the second connecting edge 45 and one end of the lid 41 is provided with an insertion protrusion 452. When the second connecting edge 45 is inserted into one end of the lid 41, the insertion protrusion 452 is located in the insertion groove 451.

[0057] In this embodiment, the engagement of the insertion protrusion 452 and the insertion groove 451 enables rapid positioning of the lid 41 and the box body 43, ensuring precise alignment of the lid 41 with the box body 43 when closed. Furthermore, one end of the lid 41 is connected to the second connecting edge 45 of the box body 43 via the insertion protrusion 452 and the insertion groove 451, while the other end of the lid 41 is rotatably and detachably connected to the first connecting edge 44 of the box body 43 via the snap-fit ​​groove 442 and the snap-fit ​​edge 441. Thus, when the box body 43 needs to be opened, the insertion protrusion 452 and the insertion groove 451 are first separated, and then the lid 41 can be removed by rotating it around the other end by a preset angle. The engagement of the insertion protrusion 452 and the insertion groove 451 facilitates the separation of one end of the lid 41 from the box body 43 and does not interfere with the snap-fit ​​groove 442 and the snap-fit ​​edge 441 at the other end of the lid 41, ensuring smooth rotation and removal of the lid 41.

[0058] Optionally, such as Figure 6 As shown, d > Dh / H; where D is the length of the insertion protrusion 452 inserted into the insertion slot 451 when the second connecting edge 45 is inserted into one end of the lid 41, h is the length of the snap-fit ​​edge 441 inserted into the snap-fit ​​slot 442, the snap-fit ​​slot 442 includes a first slot edge and a second slot edge arranged opposite to each other along the direction from the lid 41 to the box body 43, d is the distance between the first slot edge and the snap-fit ​​edge 441, and H is the height of the lid 41.

[0059] In this embodiment, by limiting the dimensional relationship d > Dh / H, it is ensured that when the other end of the cover 41 rotates around the snap-fit ​​edge 441, the insertion protrusion 452 and the insertion groove 451 at one end of the cover 41 can be smoothly separated. This means that the insertion protrusion 452 can completely disengage from the insertion groove 451 before separating the snap-fit ​​groove and the snap-fit ​​edge, avoiding insufficient space that prevents the cover 41 from fully opening or causing jamming during opening. Optionally, the second connecting edge 45 is a second flange 434. Optionally, the first connecting edge 44 can be the top plate 112 of the duct machine.

[0060] This disclosure provides a duct air conditioner, which includes the electrical control box 40 of any of the foregoing embodiments, and also includes the beneficial effects of the electrical control box 40 of any of the foregoing embodiments, which will not be repeated here.

[0061] Optionally, the electrical control box 40 is located at the front of the ducted air conditioner and on one side along the length of the air outlet 121. The cover 41 and the box body 43 are arranged along the front-to-back direction, and the cover 41 can be opened from the front to open the box body 43. In this way, when the electrical control box 40 is exposed from the reserved opening, the cover 41 can be moved from the front to open the maintenance port 431. The maintenance user can repair the computer board 42 through the reserved opening, or remove the computer board 42 through the reserved opening and the maintenance port 431.

[0062] Optionally, the cover 41 extends along the length of the duct unit, and the computer board 42 is tilted relative to the length of the duct unit. When the cover 41 is open, the computer board 42 is tilted along the length of the duct unit, so that the operating space of the computer board 42 is not directly facing forward, but can face either the side of the control box 40 near the air outlet 121 or the side of the control box 40 away from the air outlet 121. This increases the operating space of the control box 40, making it easier to inspect, repair, disassemble, and install the computer board 42.

[0063] Optionally, such as Figure 7 As shown, the ducted air conditioner also includes a water collection tray 53, which is located inside the receiving cavity and below the heat exchanger 20. The electrical control box 40 is located on the front side of one end of the water collection tray 53. One end of the water collection tray 53 is matched with the back plate 432. In this way, one end of the water collection tray 53 matches the back plate 432 of the electrical control box 40. Here, matching means that the tilt direction of one end (front end) of the water collection tray 53 is the same as or similar to the tilt direction of the back plate 432 of the electrical control box 40, so that the two fit tightly together, making full use of the internal space of the ducted air conditioner, avoiding space waste or structural interference, and ensuring the compactness of the overall structure.

[0064] Optionally, the water receiving tray is L-shaped and includes a water receiving part and a draining part. The water receiving part is located below the heat exchanger, and the draining part is located on one side of the heat exchanger. The draining part is equipped with a water pump, which is used to discharge the water from the water receiving tray.

[0065] Optionally, the electrical control box is located on the front side of the drainage section, wherein the front end of the drainage section matches the back plate of the electrical control box. This can be understood as the front end of the drainage section having the same or similar tilt direction and tilt angle as the back plate of the electrical control box.

[0066] Optionally, the back panel 432 is detachably connected to the housing 10, so that the cover 41 can be opened or removed separately to repair and remove the computer board 42. Alternatively, the back panel 432 can be separated from the housing 10 to remove the entire electrical control box 40 from the housing 10.

[0067] In some alternative embodiments, such as Figures 14 to 17 As shown, the housing defines a receiving cavity with a communication port 111 for air intake and / or air exhaust. The heat exchanger 20 is detachably connected to the housing 10, and the heat exchanger 20 can be removed from the receiving cavity through the communication port 111. In this embodiment, the heat exchanger 20 is detachably connected to the housing 10 and can be removed from the receiving cavity through the communication port 111. This eliminates the need to remove the entire ducted air conditioner from the ceiling space, allowing for the disassembly and assembly of the heat exchanger 20, simplifying the disassembly process and improving the ease of disassembly and assembly of the heat exchanger 20.

[0068] Optionally, the operating end of the heat exchanger 20 for connecting and disconnecting from the housing 10 faces the communication port 111.

[0069] In this embodiment, the connection and disassembly operation end of the heat exchanger 20 faces the connection port 111. Maintenance personnel can directly align the operation position through the air outlet 121 without having to search for the hidden connection structure or remove the ceiling.

[0070] Optionally, the heat exchanger 20 is provided with a connecting part 21, and the duct unit also includes a mounting bracket. The mounting bracket is located at at least one end of the heat exchanger 20 along its length and is connected to the housing 10. The mounting bracket is provided with a connecting mating part adapted to the connecting part 21, and the connecting mating part and the connecting part 21 are detachably connected. The connecting part 21 corresponds to the communication port 111, and the operating end of the connecting part 21 and the connecting mating part for connecting or disconnecting faces the communication port 111.

[0071] In this embodiment, the mounting bracket is adapted to the connecting part 21 of the heat exchanger 20 via a connecting mating part, enabling the heat exchanger 20 to be positioned and installed correctly. This avoids misalignment during assembly, ensures the relative positional accuracy of the heat exchanger 20 with the fan and ductwork, and guarantees heat exchange efficiency. Both the connecting part 21 and the operating end face the communication port 111, allowing maintenance personnel to directly operate the connection structure through the communication port 111 without disassembling the entire mounting bracket, further simplifying the assembly and disassembly process. Furthermore, the mounting bracket is fixed to the housing 10, providing stable support for the heat exchanger 20, resisting airflow impact and equipment vibration, preventing displacement or deformation of the heat exchanger 20, while the detachable design does not affect the stability of the support.

[0072] Optionally, the heat exchanger 20 includes a heat exchanger body 22 and a tube sheet; the tube sheet is located at at least one end of the heat exchanger body 22 along its length, and the tube sheet is provided with a connecting portion 21; wherein, when the connecting portion 21 is connected to the connecting mating portion, the tube sheet is located on the side of the mounting bracket facing the communication port 111.

[0073] In this embodiment, the tube sheet is located on the side of the mounting bracket facing the connection port 111. The connection operation can be performed directly from the connection port 111, avoiding the mounting bracket from obstructing the connection structure and ensuring that the disassembly and assembly tools can operate smoothly without spatial obstruction. Furthermore, after the connecting part 21 is separated from the connecting mating part, the heat exchanger 20 can move towards the connection port 111, preventing the mounting bracket from blocking the disassembly and assembly path of the heat exchanger 20.

[0074] Optionally, the tube sheet includes a first tube sheet 221 and a second tube sheet 222. The first tube sheet 221 is located at one end of the length direction of the heat exchanger body 22, and the second tube sheet 222 is located at the other end of the length direction of the heat exchanger body 22. The distance between the first tube sheet 221 and the second tube sheet 222 is less than the minimum distance between the two sidewalls of the connection port 111 along the length direction of the heat exchanger 20. In this embodiment, the distance between the first tube sheet 221 and the second tube sheet 222 is less than the minimum distance between the two sidewalls of the connection port 111, ensuring that the entire heat exchanger 20 can be smoothly moved out of the connection port 111, avoiding jamming or collision due to size mismatch, and also preventing the heat exchanger 20 from colliding with the connection port 111, thus preventing damage to the heat exchanger 20.

[0075] Optionally, the mounting bracket includes a first mounting bracket 231 and a second mounting bracket 232. The first mounting bracket 231 is connected to the housing 10 and is located at one end of the length direction of the first heat exchanger 20. The first mounting bracket 231 is situated on the side of the first tube sheet 221 opposite to the connecting port 111 and is detachably connected to the first tube sheet 221. The second mounting bracket 232 is located at the other end of the length direction of the first heat exchanger 20 and is situated on the side of the second tube sheet 222 opposite to the connecting port 111 and is detachably connected to the second tube sheet 222. In this embodiment, the two mounting brackets form a symmetrical support structure with the first tube sheet 221 and the second tube sheet 222 at both ends of the length direction of the heat exchanger 20, further improving the stability and balance of the heat exchanger 20 installation.

[0076] Optionally, when the heat exchanger 20 is a straight plate extending along the length of the duct machine, the first tube sheet 221 and the second tube sheet 222 are arranged along the length of the duct machine.

[0077] Optionally, when the heat exchanger 20 is L-shaped, that is, when it includes a first heat exchange section and a second heat exchange section, the first tube sheet 221 is located at the end of the second heat exchange section away from the first heat exchange section, and the second tube sheet 222 is located at the front end of the first heat exchange section.

[0078] Optionally, when the heat exchanger 20 is U-shaped, the first tube sheet 221 and the second tube sheet 222 are both located at the front ends of both sides of the heat exchanger 20.

[0079] Optionally, the partition 14 includes a second step structure located on the side of the first tube sheet 221 opposite to the communication port 111, and the second step structure is detachably connected to the first tube sheet 221. The second step structure is provided with a connecting mating part.

[0080] Optionally, one end of the heat exchanger 20 is provided with a pipe connection, and the ducted air conditioner also includes a heat exchange tube assembly 25, which is located at one end of the heat exchanger 20 and is detachably connected to the pipe connection; wherein, the pipe connection is located inside the receiving cavity.

[0081] In this embodiment of the present disclosure, the heat exchange tube assembly 25 is detachably connected to the pipe joint of the heat exchanger 20. When it is necessary to disassemble the heat exchanger 20, the heat exchange tube assembly 25 is disassembled from the pipe joint, which facilitates the movement of the heat exchanger 20 in the receiving cavity and its removal from the communication port 111.

[0082] Optionally, the duct unit also includes a partition 14 located within the receiving cavity, which divides the receiving cavity into a first space 141 and a second space 142. The heat exchanger 20 is located in the first space 141, and the heat exchange tube assembly 25 is located in the second space 142. The pipe connection is located in the second space 142, which is connected to the outside, so that the pipe connection and the heat exchange tube assembly 25 can be disassembled and connected in the second space 142.

[0083] In this embodiment, the partition 14 divides the accommodating cavity into a first space 141 and a second space 142. This prevents moisture from the second space 142 from entering the first space 141, thus affecting the heat exchange efficiency of the heat exchanger 20 and the temperature and humidity of the heat exchange airflow. The pipe joint and the heat exchange tube assembly 25 are disassembled and connected in the second space 142. This allows the disassembly and connection of the pipe joint and the heat exchange tube assembly 25 to be performed independently without operation in the first space 141, avoiding interference with other components and further improving the ease of assembly and disassembly of the heat exchanger 20.

[0084] Optionally, the rear end of the partition is connected to the first tube sheet, so that the partition and the first tube sheet together divide the receiving cavity into a first space and a second space.

[0085] Optionally, a first tube sheet 221 is provided at one end of the heat exchanger 20 along its length. The first tube sheet 221 is detachably connected to the partition plate 14. The first tube sheet 221 is provided with a connecting part 21, and the partition plate 14 is provided with a connecting mating part. The mounting bracket includes the partition plate 14. Along the depth direction of the duct machine, the projection of the portion of the partition plate in front of the first tube sheet onto the plane of the rear back plate of the casing is located on the side of the connecting part 21 and the connecting mating part away from the heat exchanger 20.

[0086] In this embodiment, the partition 14 can serve as a mounting bracket and is detachably connected to the first tube sheet 221 of the heat exchanger 20. This simplifies the internal structure of the duct unit, reduces the number of components, and lowers manufacturing costs. Simultaneously, the layout of the connecting part 21 and the connecting mating part ensures that disassembly and assembly operations are interference-free. Along the depth direction of the receiving cavity, the projection of the partition 14 is located on the side of the connecting part 21 and the connecting mating part away from the heat exchanger 20. This ensures that when the heat exchanger 20 moves towards the communication port 111, the partition 14 will not obstruct the disassembly path of the heat exchanger 20, nor will it affect the installation path of the heat exchanger 20.

[0087] Optionally, such as Figure 14 and Figure 18 As shown, the connecting port 111 is located on the front side of the first space 141, and the front side of the second space 142 is provided with a disassembly port 1421. The duct unit also includes a water pump 50 and an electrical control box 40. The water pump 50 is located inside the second space 142; the electrical control box 40 is located on the front side of the water pump 50. Both the electrical control box 40 and the water pump 50 are detachably connected to the housing 10 and can be removed from the disassembly port 1421. After both the electrical control box 40 and the water pump 50 are removed, the operating ends for disassembling and connecting the heat exchange tube assembly 25 and the pipe joint face the disassembly port 1421. In this embodiment, both the electrical control box 40 and the water pump 50 are located in the second space 142 and are detachable. The electrical control box 40 is located on the front side of the water pump 50, allowing for sequential disassembly and assembly of the electrical control box 40 and the water pump 50 from the front, enabling centralized maintenance of multiple components without the need for multiple disassembly ports 1421, thus improving maintenance convenience.

[0088] Optionally, the disassembly port 1421 is connected to the reserved port. The heat exchange tube assembly 25 is located behind the water pump 50. After the electrical control box 40 and the water pump 50 are removed, the operating ends of the heat exchange tube assembly 25 and the pipe joint face forward and are connected to the outside through the disassembly port 1421. In this way, when the electrical control box 40 and the water pump 50 are disassembled, the heat exchange tube assembly 25 is connected to the reserved port through the disassembly port 1421, which can separate the heat exchange tube assembly 25 and the pipe joint, thereby separating the heat exchanger 20 from the heat exchange tube assembly 25. Then, the heat exchanger 20 and the casing 10 are disassembled, thus disconnecting the heat exchanger 20 from the casing 10 and other components. The heat exchanger 20 can then move toward the connection port 111 to be disassembled from the connection port 111.

[0089] Optionally, the second space 142 is provided with a disassembly port 1421, and the electrical control box 40 is located in the disassembly port 1421. In this way, after the electrical control box 40 is removed from the disassembly port 1421, the disassembly port 1421 can be connected to the outside, so that the water pump 50 can be removed from the disassembly port 1421.

[0090] Optionally, the length of the control box 40 is greater than the length of the disassembly port 1421, the partition 14 is constructed with a first step structure, and the back plate 432 of the control box 40 is attached to and detachably connected with the first step structure, so as to achieve a stable connection between the control box 40 and the partition 14.

[0091] Optionally, along the depth direction of the duct unit, the projection of the first step structure onto the plane of the rear back plate 432 of the housing 10 falls into the projection of the second step structure onto the plane of the rear back plate 432 of the housing 10, so that when the heat exchanger 20 is removed from the receiving cavity, the first tube sheet 221 will not interfere with the first step structure.

[0092] Optionally, the fan assembly 30 is located between the heat exchanger 20 and the connection port 111; wherein the fan assembly 30 is detachably disposed in the receiving cavity, the fan assembly 30 can be removed from the receiving cavity through the connection port 111, and the fan assembly 30 and the heat exchanger 20 can be removed from the receiving cavity through the connection port 111 in sequence.

[0093] In this embodiment, the fan assembly 30, located between the heat exchanger 20 and the connecting port 111, ensures the air outlet efficiency of the ducted air conditioner. The fan assembly 30 is detachably connected to the housing 10 and can be removed from the receiving cavity through the connecting port 111. After the fan assembly 30 is removed, the operating end of the connection portion 21 and the connecting mating portion between the heat exchanger 20 and the housing 10 communicates with the connecting port 111. This allows maintenance personnel to insert tools into the receiving cavity to operate and separate the connection portion 21 and the connecting mating portion. Once the heat exchanger 20 is disconnected from the housing 10, it can be removed from the connecting port 111. Furthermore, there is no need to disassemble the partition and the housing, improving the ease of assembly and disassembly.

[0094] Optionally, when the heat exchanger 20 is removed from the receiving cavity, the heat exchanger can be moved horizontally or tilted before being removed, which can avoid interference between the pipe joints of the heat exchanger 20 and the casing or partition.

[0095] In other alternative embodiments, such as Figures 8 to 10 As shown, the duct air conditioner includes a partition 14, and a housing 10 defines a receiving cavity with a communication port 111; the partition 14 is located in the receiving cavity and divides the receiving cavity into a first space 141 and a second space 142; a fan assembly 30 is disposed in the first space 141; and a water pump 50 is detachably disposed in the second space 142; wherein, the partition 14 is provided with a disassembly port 54, and the water pump 50 can be removed from the receiving cavity through the disassembly port 54 and the communication port 111 in sequence.

[0096] In this embodiment, a fan assembly 30 is provided in the first space 141, and a water pump 50 is provided in the second space 142. The water pump 50 can be disassembled from the second space 142 and moved out of the second space 142 through the disassembly port 54, and then moved out of the receiving cavity through the connecting port 111. In this way, the disassembly of the water pump 50 is not affected by the installation environment of the air duct machine, which greatly improves the convenience of disassembly and assembly of the water pump 50.

[0097] Optionally, the duct unit also includes a disassembly plate 541, which is movably disposed at the disassembly port 54. The water pump 50 is connected to the disassembly plate 541, and the disassembly plate 541 can move the water pump 50 from the second space 142 to the first space 141. In this embodiment, the disassembly plate 541 can move the water pump 50 as a whole to the first space 141 without separately disassembling the fixing structure between the water pump 50 and the housing 10, reducing disassembly and assembly steps and shortening maintenance and disassembly time.

[0098] Optionally, the disassembly plate 541 can be detachably connected to the partition plate 14, so that the disassembly plate 541 can drive the water pump 50 to be disassembled as a whole, reducing disassembly steps and improving the convenience of disassembly and installation.

[0099] Optionally, the water pump 50 is detachably connected to the disassembly plate 541. This allows the water pump 50 to be removed separately from the disassembly plate 541, facilitating the maintenance of the water pump 50.

[0100] Optionally, when one end of the disassembly plate 541 is separated from the partition plate 14, the disassembly plate 541 can be flipped toward the first space 141 so that the disassembly plate 541 drives the water pump 50 to move into the first space 141.

[0101] In this embodiment, the disassembly plate 541 can be flipped towards the first space 141 to move the water pump 50 without requiring additional space for translation, maximizing the use of the internal space of the accommodating cavity and ensuring a compact structure for the duct unit. Furthermore, the flipping of the disassembly plate 541 ensures that the water pump 50 moves smoothly from the second space 142 to the first space 141, avoiding jamming caused by narrow spaces.

[0102] Optionally, one end of the disassembly plate 541 is detachably connected to the partition plate 14, and the other end of the disassembly plate 541 is rotatably connected to the partition plate 14. When one end of the disassembly plate 541 is separated from the partition plate 14, the disassembly plate 541 can rotate around the other end of the disassembly plate 541 toward the first space 141.

[0103] In this embodiment, one end of the disassembly plate 541 is detachable and the other end is rotatably connected. This way, the disassembly plate 541 does not need to be completely removed, and the problems of inaccurate positioning or inconvenient operation during the installation of the disassembly plate 541 can be avoided.

[0104] Optionally, the other end of the disassembly plate 541 is rotatably and detachably connected to the partition plate 14.

[0105] In this embodiment, the other end of the disassembly plate 541 is rotatably and detachably connected to the partition plate 14. In this way, the disassembly plate 541 can be flipped open for quick inspection and maintenance, or it can be completely disassembled for in-depth maintenance, adapting to different maintenance needs.

[0106] Optionally, the other end of the disassembly plate 541 is attached to the side of the partition 14 facing the first space 141. In this embodiment of the present disclosure, the other end of the disassembly plate 54 is still attached to the side of the partition 14 facing the first space 141, which can reduce the gap of the disassembly opening 54 when closed, and prevent the first space 141 and the second space 142 from interfering with each other.

[0107] Optionally, when the water pump 50 is installed in the second space 142, the maximum length of the water pump 50 along the length direction of the duct unit is less than the height of the disassembly port 54. This ensures that the water pump 50 can pass smoothly through the disassembly port 54, avoiding jamming or collision of the water pump 50 due to insufficient size of the disassembly port 54, and ensuring the smoothness of the disassembly and assembly process.

[0108] Optionally, the water pump includes a pump body and a connecting plate, with the connecting plate located on one side of the pump body and connected to the disassembly plate. Here, the connecting plate allows for more flexible pump configuration, ensuring that the pump's suction port faces downwards during operation and that the side of the pump connects to the partition plate, facilitating pump assembly and disassembly.

[0109] Optionally, the first space 141 includes a fan space with a connecting port 111. The fan assembly 30 is detachably disposed in the fan space and can be removed from the receiving cavity through the connecting port 111. After the fan assembly 30 is removed from the receiving cavity through the connecting port 111, the disassembly port 54 is connected to the connecting port 111 through the fan space, so that the water pump 50 can be removed from the receiving cavity through the fan space and the connecting port 111 in sequence.

[0110] In this embodiment, after the fan assembly 30 is detached and removed, the disassembly port 54 and the communication port 111 are connected through the fan space. The fan space provides more space for the water pump 50 to be moved and disassembled, avoiding interference between the water pump 50 and the fan assembly 30, further reducing maintenance difficulty and improving operational convenience.

[0111] Optionally, the first space 141 further includes a heat exchange space located on the side of the fan space opposite to the connection port 111. The duct unit also includes a heat exchanger 20 located within the heat exchange space. The heat exchanger 20 is detachably connected to the housing 10 and can be removed from the receiving cavity through the connection port 111. In this embodiment, both the fan assembly 30 and the heat exchanger 20 can be detached from the receiving cavity and the connection port 111, thus improving the ease of assembly and disassembly of the duct unit. The disassembly method of the heat exchanger 20 includes any of the aforementioned disassembly methods, which will not be elaborated here. Optionally, the heat exchanger 20 is detachably disposed within the heat exchange space.

[0112] In other alternative embodiments, such as Figures 11 to 13 As shown, the ducted air conditioner includes a housing 10, a heat exchanger 20, a drip tray 53, a water pump 50 assembly, and an electrical control box 40. The housing 10 defines a receiving cavity with an air outlet 121. The heat exchanger 20 is located within the receiving cavity. The drip tray 53 is located below the heat exchanger 20. The water pump 50 assembly includes a water pump 50 and a partition plate 60 connected together. The water pump 50 assembly is located within the receiving cavity, and the water pump 50 is connected to the drip tray 53. The electrical control box 40 is detachably located on one side of the water pump 50, and the partition plate 60 is located between the water pump 50 and the electrical control box 40. The water pump 50 assembly is detachably connected to the housing 10 so that the water pump 50 and the partition plate 60 can be detached from the housing 10 as a whole.

[0113] In this embodiment, the partition plate 60 effectively isolates the electrical control box 40 and the water pump 50, preventing moisture and cold air from the water pump 50 from affecting the electrical control box 40. The partition plate 60 is connected to the water pump 50 to form a water pump 50 assembly. The water pump 50 assembly can be completely removed from the housing 10. Thus, after the electrical control box 40 is removed, the partition plate 60 and the water pump 50 can be removed from one side of the electrical control box 40 without having to be removed from the side, improving the ease of disassembly and assembly of the water pump 50.

[0114] Optionally, the water pump 50 includes a water pump body 51 and a water pipe 52, with the water pipe 52 connected to the water pump body 51; wherein, the partition plate 60 is configured with a mounting part, and the water pipe 52 is located in the mounting part.

[0115] In this embodiment, the mounting portion of the partition plate 60 provides a fixing structure for the water pipe 52, preventing the water pipe 52 from shifting or falling off due to equipment vibration or water flow impact, ensuring the stability of the connection between the water pump 50 and the water receiving tray 53, and preventing potential leakage. The water pipe 52 and the partition plate 60 are integrated and connected through the mounting portion, making the water pump 50 assembly a more complete whole, improving the convenience of disassembly and installation.

[0116] Optionally, the mounting section includes a through hole that extends through the partition plate 60 along its thickness direction, and the water pipe 52 passes through the through hole. This ensures that the through hole and the water pipe 52 are sized to fit together tightly, limiting radial movement of the water pipe 52 and further enhancing the reliability of its installation. It also prevents wear caused by vibration and friction between the water pipe 52 and the partition plate 60.

[0117] Optionally, the through hole is sealed to the water pipe 52 to prevent water vapor from the water pump 50 side from flowing through the through hole to the electrical control box 40.

[0118] Optionally, the partition plate 60 is detachably connected to the electrical control box 40. This allows the electrical control box 40 to be separated from the partition plate 60 and disassembled independently, without the need to disassemble both the electrical control box 40 and the partition plate 60 simultaneously.

[0119] Optionally, the partition plate 60 includes a first partition plate 61 and a second partition plate 62. The first partition plate 61 is located between the water pump 50 and the electrical control box 40 and has a first through hole 611. The second partition plate 62 is located on the side of the first partition plate 61 facing the outside and has a second through hole 621. The water pipe 52 passes through the first through hole 611 and the second through hole 621 in sequence so that the water pipe 52 connects the water pump body 51 and the outside.

[0120] In this embodiment, the first partition plate 61 and the second partition plate 62 provide dual guidance and positioning for the water pipe 52, enabling it to connect to the outside and drain water from the water tray 53. Simultaneously, the two through holes enhance the stability of the water pipe 52, preventing it from detaching. Furthermore, the two partition plates 60 constrain the water pipe 52, ensuring that the water pump 50 can be disassembled as a whole from the partition plates 60, avoiding interference with the electrical control box 40 and improving disassembly convenience.

[0121] Optionally, the first partition plate 61 is spaced apart from the electrical control box 40. This spaced-apart arrangement creates a heat dissipation gap, facilitating the dissipation of heat generated by the internal electrical components of the electrical control box 40 during operation. Furthermore, the heat dissipation gap can also form an insulation gap, preventing water vapor and cold air from the water pump 50 from entering the electrical control box 40, thus ensuring the normal operation of the electrical control box 40.

[0122] Optionally, one end of the second partition plate 62 is connected to the first partition plate 61, and the other end of the second partition plate 62 is detachably connected to the electrical control box 40. In this way, after the second partition plate 62 is detached from the electrical control box 40, the first partition plate 61, the second partition plate 62 and the water pump 50 can be disassembled as a whole, which is convenient for disassembly and assembly.

[0123] Optionally, the duct unit also includes a partition 14 located within the receiving cavity, dividing the receiving cavity into a first space 141 and a second space 142; wherein the heat exchanger 20 is located in the first space 141, the water pump 50 assembly is located in the second space 142, and the partition plate 60 is detachably connected to the partition 14.

[0124] In this embodiment, the partition 14 divides the accommodating cavity into a first space 141 and a second space 142. The heat exchanger 20 and the water pump 50 are respectively located in the two spaces on both sides of the partition 14. This prevents the heat exchange airflow from the first space 141 from flowing into the second space 142, ensuring heat exchange efficiency. It also prevents moisture from the second space 142 from entering the first space 141 and affecting heat exchange efficiency. The partition plate 60 is also detachably connected to the partition 14, which facilitates the overall disassembly of the water pump 50 by the partition plate 60.

[0125] Optionally, the water pump 50 and the electrical control box 40 are arranged sequentially along the first direction, and the electrical control box 40 and the water pump 50 assembly can be disassembled from the housing 10 sequentially along the first direction.

[0126] In this embodiment, both the electrical control box 40 and the water pump 50 can be disassembled along a first direction. This allows for the disassembly of multiple components with only one access port, reducing the space requirements for the duct unit installation. Optionally, the first direction can be from back to front or along the length of the duct unit.

[0127] Optionally, the electrical control box 40 is located in front of the water receiving tray 53, and the partition plate 60 is located at the front end of the water receiving tray 53, with a flange 63 at the lower end of the partition plate 60; wherein the flange 63 is in contact with the upper wall surface of the water receiving tray 53. In this embodiment, the flange 63 is in contact with the upper wall surface at the front end of the water receiving tray 53, which can improve the sealing effect between the partition plate 60 and the water receiving tray 53, prevent cold air in the water receiving tray 53 from entering the electrical control box 40 side, and improve the sealing effect of the partition.

[0128] Optionally, the flange 63 is provided with a clearance groove 64 for wiring. The clearance groove 64 facilitates wiring and avoids cutting the wiring.

[0129] Optionally, the clearance groove 64 is arc-shaped, and the wiring of the electrical control box 40 is located within the clearance groove 64. Optionally, there are multiple clearance grooves 64, which are spaced apart along the length of the partition plate 60. Optionally, the lower end of the first partition plate 61 is provided with a flange 63 and / or a clearance groove 64.

[0130] Optionally, the length of the partition plate 60 is less than the length of the electrical control box 40. This provides sufficient space for the water pump 50 and the partition plate 60 to be removed.

[0131] In other alternative embodiments, such as Figures 18 to 22 As shown, the housing 10 includes a front panel 12 with an air outlet 121; a fan assembly 30 is disposed inside the housing 10, with a fan outlet communicating with the air outlet 121; the ducted air conditioner also includes a fixing plate 36, which is disposed between the front panel 12 and the fan assembly 30, and is connected to both the housing 10 and the fan assembly 30. In this embodiment, the fixing plate 36 is disposed between the front panel 12 and the fan assembly 30, and forms a stable connection between the fixing plate 36 and both the housing 10 and the fan assembly 30. This allows the fixing plate 36 to provide support and positioning for the fan assembly 30, effectively dispersing the vibration generated during operation of the fan assembly 30, reducing the transmission of vibration to the housing 10, lowering operating noise, and improving the stability of the air conditioner operation.

[0132] Optionally, the fan assembly 30 includes a motor bracket 33 for mounting a fan motor 35; wherein a mounting plate 36 is located on the front side of the motor bracket 33 and is detachably connected to the motor bracket 33.

[0133] In this embodiment, the motor bracket 33 is used to mount and fix the fan motor 35, and the fixing plate 36 further connects the housing 10 and the motor bracket 33, improving the connection stability of the fan motor 35. Furthermore, the fixing plate 36 can disperse the vibration generated by the fan motor 35 during operation, preventing damage and deformation of the motor bracket 33. The fixing plate 36 is detachably connected to the motor bracket 33, so that when the fan assembly 30 is disassembled, the fixing plate 36 can be separated from the motor bracket 33, facilitating inspection and maintenance.

[0134] Optionally, the front end face of the motor bracket 33 is provided with a positioning post 331, and the fixing plate 36 is provided with a positioning hole 361. When the fixing plate 36 is connected to the motor bracket 33, the positioning post 331 is located in the positioning hole 361.

[0135] In this embodiment, the cooperation between the positioning post 331 and the positioning hole 361 can achieve precise alignment between the fixing plate 36 and the motor bracket 33, avoid misalignment during assembly, ensure the coaxiality of the fan outlet and the air outlet 121, and improve the smoothness of airflow.

[0136] Optionally, the mounting plate is provided with a mounting structure for detachable connection to the housing and motor bracket. Here, the mounting structure can be screw holes, allowing the mounting plate to be connected to the motor bracket or the housing via screws, simplifying operation and reducing cost.

[0137] Optionally, the fan assembly 30 includes a first volute 311, a second volute 312, and an impeller 34. The second volute 312 is detachably connected to the first volute 311 and encloses the impeller cavity. The impeller 34 rotates within the impeller cavity. The second volute 312 and the motor bracket 33 are an integral structure.

[0138] In this embodiment, the volute 31 includes a first volute 311 and a second volute 312 that are detachably connected, facilitating the disassembly, cleaning, and maintenance of the impeller 34 within the volute 31. The second volute 312 and the motor bracket 33 are integrally formed, eliminating the need for additional assembly of the motor bracket 33, reducing assembly errors, and ensuring precise installation of the fan motor 35. Furthermore, the integral structure ensures the strength of both the motor bracket 33 and the volute 31, reducing or preventing deformation and noise.

[0139] Optionally, the housing 10 includes a top plate 112 and a bottom plate 113, with a fixing plate 36 connected between the top plate 112 and the bottom plate 113. In this embodiment, the fixing plate 36 is connected between the top plate 112 and the bottom plate 113 to form a longitudinal support structure, which can prevent the top plate 112 and the bottom plate 113 from deforming when the duct machine is long.

[0140] Optionally, the fixing plate is detachably connected to the top plate and / or the bottom plate. Specifically, the top plate and / or the bottom plate have an extension edge, and the fixing plate is located on the front side of the extension edge and detachably connected to the extension edge.

[0141] Optionally, the housing 10 includes a base plate 113, and the duct unit also includes a support plate 362. The support plate 362 is disposed on the base plate 113 and / or the top plate 112 and extends vertically. The support plate 362 is detachably connected to the fixing plate 36. In this embodiment, the support plate 362 supports the fixing plate 36 and provides 21 connecting parts for connecting and fixing the fixing plate 36, thereby improving the connection stability of the fixing plate 36.

[0142] Optionally, when the fan assembly 30 is installed in place within the housing 10, the support plate 362 abuts against the fixing plate 36. In this embodiment, the support plate 362 can not only connect to the fixing plate 36, but also limit the motor bracket 33. When the fan assembly 30 moves toward the receiving cavity and is installed in place within the housing 10, the fixing plate 36 abuts against the support plate 362, thus limiting the movement of the fixing plate 36 toward the receiving cavity. The fixing plate 36 is connected to the motor bracket 33, which also limits the motor bracket 33 and the fan assembly 30, thereby ensuring the installation accuracy of the fan assembly 30.

[0143] Optionally, a gap is formed between the motor bracket 33 and the top plate 112 and / or the bottom plate 113; wherein the height of the support plate 362 is less than the height of the gap. In this way, when the fan assembly 30 moves toward the communication port 111 for disassembly and installation, there is no obstruction on the movement trajectory of the fan assembly 30, and the support plate 362 will not interfere with the motor bracket 33, further improving the ease of disassembly and assembly of the fan assembly 30.

[0144] Optionally, the width of the support plate 362 is less than the minimum width of the gap. In this way, the support plate 362 will not interfere with the movement path of the motor bracket 33 in the width direction, which is also the length direction of the duct machine, thus ensuring the ease of disassembly and assembly of the fan assembly 30.

[0145] Optionally, the housing 10 further includes a connecting flange 363, which is disposed on the bottom plate 113 and / or top plate 112 of the housing 10. The connecting flange 363 extends vertically, and the support plate 362 is located behind the connecting flange 363 and is connected to the support plate 362. A fixing plate 36 is disposed in front of the support plate 362 and is offset from the connecting flange 363. In this embodiment, the connecting flange 363 can improve the connection strength of the support plate 362. When the connecting flange is located on the bottom plate, the height of the lower end of the fixing plate 36 is greater than or equal to the height of the upper end of the connecting flange 363. When the connecting flange is located on the top plate, the height of the upper end of the fixing plate is less than the height of the lower end of the connecting flange. This prevents interference between the connecting flange 363 and the fixing plate 36 when the fixing plate 36 moves toward the communication opening 111, ensuring the ease of disassembly of the fixing plate 36.

[0146] Optionally, when the support plate 362 is disposed on the base plate 113, the base plate 113 is provided with an upper flange 63, and the connecting flange 363 includes the upper flange 63, which extends upward. The support plate 362 is located on the rear side of the upper flange 63, and the upper flange 63 is connected to the support plate 362. The fixing plate 36 is disposed on the front side of the support plate 362, and the height of the lower end of the fixing plate 36 is greater than or equal to the height of the upper end of the upper flange 63. Optionally, the height of the upper end of the upper flange 63 is less than the height of the upper end of the support plate 362 to avoid interference between the upper flange 63 and the motor bracket 33.

[0147] Optionally, the housing 10 includes a box 11 and a front panel 12. The box 11 defines a receiving cavity with a communication port 111, and the fan assembly 30 is detachably disposed in the receiving cavity. The front panel 12 is disposed in the communication port 111 and is detachably connected to the box 11. Both the front panel 12 and the fan assembly 30 are detachably connected to the box 11 and can be removed forward in sequence.

[0148] In this embodiment, the front panel 12 and the fan assembly 30 can be removed sequentially forward. This not only reduces the processing technology of the ducted air conditioner, but also allows for targeted and individual disassembly and maintenance of the front panel 12 and the fan assembly 30. Furthermore, the fan assembly 30 is not affected when the front panel 12 is disassembled separately. In addition, the fixing plate 36 is located between the front panel 12 and the fan assembly 30. After the front panel 12 is removed, the fixing plate 36 can be exposed. The fixing plate 36 can be separated from the housing 10, and either the fixing plate 36 itself or the fixing plate 36 and the fan assembly 30 can be disassembled as a whole. This not only improves the disassembly convenience of the ducted air conditioner, but also provides support for the longitudinal direction of the housing 11 and the fan motor bracket 33, preventing deformation of the housing 10 along the length of the ducted air conditioner.

[0149] Optionally, such as Figure 21 As shown, a limiting rib 122 is constructed on the side of the front panel 12 facing the receiving cavity. When the front panel 12 is connected to the housing 11, the bottom plate 113 abuts against the limiting rib 122. In this embodiment, the limiting rib 122 plays a limiting role on the bottom plate 113, preventing deformation of the bottom plate 113 in the length direction from causing the front panel 12 and the bottom plate 113 to misalign and thus preventing connection and assembly.

[0150] In one specific embodiment, the ducted air conditioner includes a housing and a partition. The housing defines a receiving cavity, and the partition divides the receiving cavity into a first space and a second space. A connecting port is provided on the front side of the first space, and a removal port is provided on the front side of the second space. A heat exchanger and a fan assembly are detachably disposed in the first space, with the fan assembly located between the heat exchanger and the connecting port. A water pump, an electrical control box, and the pipe connections and heat exchanger tube assemblies of the heat exchanger are located in the second space. A front panel is detachably provided at the connecting port, and the front panel has an air outlet. The front panel, fan assembly, and heat exchanger can be sequentially removed from the first space through the connecting port. The electrical control box is detachably disposed on the front side of the removal port and can be disassembled forward to expose a partition plate and a water pump. Optionally, the partition plate and water pump can be sequentially removed from the removal port; alternatively, the partition plate is detachably connected to the housing, allowing the partition plate to be removed from the removal port, and the water pump can be removed from both the removal port and the connecting port.

[0151] This disclosure provides a method for disassembling a ducted air conditioner. The front panel and fan assembly are disassembled from the housing sequentially. The electrical control box and water pump are also disassembled from the housing. The refrigerant is recovered from the entire ducted air conditioner. The pipe connections are separated from the heat exchanger tube assembly from the second space. Then, the heat exchanger's connection part is separated from the connecting mating part, allowing the heat exchanger to be removed from the connecting port. This method enables the disassembly of multiple components of the ducted air conditioner, allowing each component to be disassembled from the front of the ducted air conditioner. When the ducted air conditioner is installed in the ceiling with only one reserved opening, the ease of maintenance is greatly improved. Similarly, when installation is required, the heat exchanger is installed first, followed by the sequential installation of the fan assembly, front panel, water pump assembly, and electrical control box.

[0152] In some alternative embodiments, such as Figure 23 and Figure 24 As shown, the fan assembly 30 includes a fan and a fan motor 35. The fan includes a volute 31 and an impeller 34, with the impeller 34 rotating within the volute 31. The volute 31 is configured with a volute tongue 37, which is used to guide the airflow from the fan. This embodiment provides a volute tongue 37 with a concave portion 371. The concave portion 371 includes a bottom wall 372 and connecting sections 373. Two connecting sections 373 are respectively connected to both ends of the bottom wall 372 along its length, and together with the bottom wall 372, form the concave portion 371. Each connecting section 373 includes multiple interconnected arcuate wall segments, and all of these arcuate wall segments are inclined along the length of the volute tongue 37 towards the bottom wall 372. In this embodiment, a connecting section 373 employs a design of multiple interconnected arc-shaped wall segments. Combined with an inclined layout along the length of the volute tongue 37 towards the bottom wall 372, this forms a guiding channel highly adapted to the airflow trajectory. This effectively reduces airflow resistance, suppresses turbulence and eddies, and allows airflow to be smoothly guided from the fan outlet to the heat exchanger 20 and the air outlet 121. The structure of multiple arc-shaped wall segments avoids abrupt airflow impacts at the connecting section 373. The inclination of the arc-shaped wall segments further optimizes the airflow trajectory, reducing frictional losses between the airflow and the inner wall of the volute tongue 37. This effectively weakens noise caused by airflow separation and turbulence, improving user comfort. Furthermore, the optimized design increases the uniformity of the airflow velocity at the air outlet 121, reducing eddies and positively impacting fan pressure and noise reduction.

[0153] Optionally, multiple arc-shaped wall segments of a connecting segment 373 may all slope downwards towards the bottom wall 372. Optionally, the connecting segment 373 as a whole may slope downwards towards the bottom wall 372. Here, the volute tongue is defined as being located at the lower end of the volute's air outlet channel.

[0154] Optionally, the curvatures of the multiple arc-shaped wall segments of a connecting segment 373 are different. In this embodiment of the present disclosure, the curvatures of the multiple arc-shaped wall segments of a connecting segment 373 are different, that is, the bending direction or the curvature of the multiple arc-shaped wall segments of a connecting segment 373 is different. In this way, the arc-shaped wall segments can adapt to the airflow at different positions of the volute tongue 37, reduce the formation and impact of vortices, and reduce noise.

[0155] Optionally, the bottom wall 372 extends along the length of the volute tongue 37. In this embodiment, the bottom wall 372 is located in the middle of the length of the volute tongue 37, where the airflow velocity is relatively fast. The bottom wall 372 is not inclined, which facilitates processing and ensures the air volume of the fan.

[0156] Optionally, the recessed portion 371 is symmetrically arranged about the center line of the bottom wall 372, and the center line of the bottom wall 372 is the center line of the volute tongue 37. This can improve the uniformity of airflow along the length of the volute tongue 37 and reduce noise.

[0157] Optionally, such as Figure 24 As shown, L1≥L2, where L1 is the projected length of a connecting segment 373 on the plane containing the bottom wall 372, and L2 is half the length of the bottom wall 372. In this embodiment of the disclosure, the length of the connecting segment 373 in the length direction of the volute tongue 37 is greater than or equal to the length of the bottom wall 372. The connecting segment 373 and the bottom wall 372 can form a concave structure, which reduces resistance and reduces vortices while ensuring airflow.

[0158] Optionally, H1 < H2, where H1 is the height of a connecting segment 373 and H2 is the maximum height of the fan outlet corresponding to the volute tongue 37. In this embodiment, the height of the connecting segment 373 is not higher than the height of the fan outlet, which ensures the air volume and avoids airflow turbulence.

[0159] Optionally, 0.1≤H1 / L1≤0.5, where H1 is the height of a connecting segment 373 and L1 is the projected length of a connecting segment 373 on the plane containing the bottom wall 372.

[0160] In this embodiment, H1 / L1 within the aforementioned range ensures that the tilt angle of the connecting section 373 matches the airflow. When H1 / L1 is less than 0.1, the tilt of the connecting section 373 is small, resulting in less guiding effect on the airflow. When H1 / L1 is greater than 0.5, the tilt angle of the connecting section 373 is large, increasing the resistance at the fan outlet. Therefore, H1 / L1 within the aforementioned range achieves a balance between airflow efficiency and noise reduction. Optionally, H1 / L1 can be any value between 0.1, 0.2, 0.3, 0.4, 0.5, or 0.1 to 0.5.

[0161] Optionally, 0.05 ≤ H1 / H2 ≤ 0.3, where H1 is the height of a connecting section 373 and H2 is the maximum height of the fan outlet corresponding to the volute tongue 37. This ensures that the height of the connecting section 373 is not excessive, thus guaranteeing the airflow at the fan outlet.

[0162] Optionally, H1 / H2 can be 0.05, 0.1, 0.2, 0.3, or any value between 0.05 and 0.3.

[0163] Optionally, a connecting segment 373 includes a first arc-shaped wall segment 374 and a second arc-shaped wall segment 375, the second arc-shaped wall segment 375 connecting the first arc-shaped wall segment 374 and the bottom wall 372; wherein, L3≥L4, L3 is the projected length of the first arc-shaped wall segment 374 on the plane where the bottom wall 372 is located, and L4 is the projected length of the second arc-shaped wall segment 375 on the plane where the bottom wall 372 is located.

[0164] In this embodiment, the projected length of the first arc-shaped wall segment 374 on the plane of the bottom wall 372 is greater than or equal to the projected length of the second arc-shaped wall segment 375 on the plane of the bottom wall 372. This allows the first arc-shaped wall segment 374 to be located at the end furthest from the bottom wall 372, increasing the inflow of air and smoothly receiving the airflow. The second arc-shaped wall segment 375 is closer to the bottom wall 372 and has a shorter projected length, which allows the airflow to gradually converge towards the bottom wall 372, resulting in a smooth transition and reducing eddies and energy loss caused by sudden changes in airflow direction. Furthermore, it effectively increases the static pressure of the airflow in the concave portion 371 of the volute tongue 37, enhancing the outlet pressure of the fan.

[0165] Optionally, one end of the first arc-shaped wall segment is connected to the side wall of the volute, and the other end of the first arc-shaped wall segment is connected to the second arc-shaped wall segment. That is, the first arc-shaped wall segment slopes downward from the side wall of the volute closer to the bottom wall.

[0166] Optionally, a connecting section 373 includes a first arc-shaped wall section 374 and a second arc-shaped wall section 375, with the second arc-shaped wall section 375 connecting the first arc-shaped wall section 374 and the bottom wall 372; H3=H4, where H3 is the height of the first arc-shaped wall section 374 and H4 is the height of the second arc-shaped wall section 375. This ensures a uniform transition in the height direction of the concave portion 371, avoiding airflow stratification and turbulence, reducing the number of vortices, and improving airflow uniformity and efficiency.

[0167] Optionally, 0.1≤H5 / L5≤0.5, where H5 is the height of an arc-shaped wall segment and L5 is the projected length of an arc-shaped wall segment on the plane containing the bottom wall 372.

[0168] In this embodiment, the ratio of the height of an arc-shaped wall segment to its projected length on the plane of the bottom wall 372 is within the aforementioned range, ensuring that the tilt angle of the connecting segment 373 matches the airflow. When H5 / L5 is less than 0.1, the tilt of the connecting segment 373 is small, resulting in less guiding effect on the airflow. When H5 / L5 is greater than 0.5, the larger tilt angle of the connecting segment 373 increases the resistance at the fan outlet. Therefore, H5 / L5 within the aforementioned range achieves a balance between airflow efficiency and noise reduction.

[0169] Optionally, the two connecting segments 373 at both ends of the bottom wall 372 are symmetrically arranged about the center line of the volute tongue 37, where the center line of the volute tongue 37 is as follows: Figure 24 The "O" shown refers to a vertical line extending along the height direction from the center of the worm tongue 37 in the length direction.

[0170] This disclosure provides a volute shell, which includes the volute tongue of any of the aforementioned embodiments and also has the beneficial effects of the volute tongue of any of the aforementioned embodiments, which will not be repeated here.

[0171] Optionally, the volute defines an air outlet channel with a fan outlet, the air outlet channel including a first wall surface 376 and a second wall surface disposed opposite each other along the height direction of the fan outlet, and the volute tongue is disposed at the end of the first wall surface 376 away from the fan outlet; wherein the first wall surface matches the volute tongue.

[0172] In this embodiment of the disclosure, the first wall surface matches the volute tongue, which means that the shape of the first wall surface is the same as or similar to the shape of the volute tongue. The first wall surface is provided with multiple arc segments at the corresponding connecting section positions, and the corresponding bottom wall positions are also provided with a bottom wall. In other words, the first wall surface extends the shape of the volute tongue, which can increase the guiding length of the airflow, reduce noise, and improve the uniformity and efficiency of the air outlet.

[0173] Optionally, the volute also includes a volute body, which defines an air outlet channel with a fan outlet, and a volute tongue is disposed in the air outlet channel; wherein, the volute body and the volute tongue are an integral structure. This can improve the air outlet effect and strength of the volute and prevent air leakage.

[0174] This disclosure provides a fan that includes the volute of any of the aforementioned embodiments and also has the beneficial effects of any of the aforementioned volutes, which will not be repeated here.

[0175] Optionally, the front panel has an air outlet, the inner wall of which matches the first wall. Optionally, the front end of the fan outlet of the volute is connected to or extends into the air outlet to prevent air leakage.

[0176] Combination Figures 34-1 to 35-2 As shown, Figure 34-1 and Figure 34-2 This is a simulation diagram of the airflow of the volute casing at two positions along the airflow direction at the fan outlet when the fan is discharging air, as shown in the related technology. Figure 34-2 lie in Figure 34-1 Upstream, as can be seen from the simulation results, there are many low-speed regions and vortices in the flow field at the outlet of the fan in the relevant technology. Figure 35-1 and Figure 35-2 This is a simulation diagram of the airflow of the volute at two positions along the airflow direction at the fan outlet. Figure 35-2 lie in Figure 35-1Upstream, as can be seen from the simulation diagram, the flow field at the outlet of the fan volute of this application has a smaller low-speed region area and fewer eddies compared to the volute in related technologies. Furthermore, comparing the flow fields at the two cross-sections, the low-speed region generated by the volute of this application is reduced to varying degrees. This indicates that the optimization of the volute tongue and volute in this application increases the uniformity of the fan outlet air velocity and reduces the generation of eddies, which has a positive impact on improving the fan air pressure and reducing noise.

[0177] In other alternative embodiments, such as Figure 32 and Figure 33 As shown, the duct air conditioner also includes multiple swivel blades 13, which are arranged sequentially at intervals along the length of the air outlet 121 to adjust the air outlet direction of the air outlet 121. The multiple swivel blades 13 are configured to control the rotation angle according to the temperature of the air inlet channel and the temperature of the air outlet 121 to adjust the air outlet direction of the air outlet 121.

[0178] In this embodiment, the air outlet 121 is provided with multiple swivel blades 13. The swivel blades 13 can adjust the air outlet direction of the air outlet 121. The duct air conditioner can obtain the indoor airflow heat exchange situation based on the temperature of the air inlet channel and the temperature of the air outlet 121. By adjusting the rotation angle of the swivel blades 13, the air outlet direction of the air outlet 121 can be changed. In this way, the air outlet direction of the air outlet 121 can be controlled when the airflow out of the air outlet 121 has not fully exchanged heat with the indoor airflow, so as to avoid the airflow out of the air outlet 121 being sucked into the air inlet channel, improve the heat exchange efficiency, and avoid the problem of short circuit of return air.

[0179] Optionally, the duct unit also includes a controller and a detection device. The controller is electrically connected to multiple oscillating blades 13. The detection device is used to detect the temperature of the air inlet channel and the temperature of the air outlet 121. The controller is configured to control the rotation angle of the multiple oscillating blades 13 according to the temperature of the air inlet channel and the temperature of the air outlet 121 to adjust the air outlet direction of the air outlet 121.

[0180] In this embodiment of the disclosure, the controller can determine whether a short circuit has occurred in the return air and the outlet air of the duct machine by detecting the temperature of the outlet 121 and the temperature of the inlet end of the inlet air channel through the detection device, and then control the swing of the oscillating blades 13 to achieve automated and precise control of the air outlet direction and avoid the occurrence of return air short circuit.

[0181] Optionally, when the ducted air conditioner is operating in heating mode, the controller is configured to control the oscillating blades 13 to rotate a set angle away from the air inlet channel when the temperature of the air inlet channel is greater than the set temperature and the temperature of the air inlet channel is less than the temperature of the air outlet 121, so that the air outlet 121 is directed away from the air inlet channel.

[0182] In this embodiment, when the ducted air conditioner is operating in heating mode, the hot air flowing out of the air outlet 121 is relatively light and easily drawn into the air inlet channel. If the temperature of the air inlet channel is higher than the set temperature but lower than the temperature of the air outlet 121, this indicates that the air inlet channel has drawn in some of the air flowing out of the air outlet 121 that has not been sufficiently heated with the indoor environment. In this case, the oscillating blades 13 are controlled to rotate at a set angle away from the air inlet channel, thus preventing the air flowing out of the air outlet 121 from being drawn into the air inlet channel.

[0183] Optionally, the temperature can be set to the target temperature that the indoor environment is to achieve. Optionally, the temperature can be set to the average indoor temperature plus 2°C, etc.

[0184] Optionally, when the ducted air conditioner is operating in heating mode, the controller is configured to control the louver 13 to extend along the extension direction of the air outlet 121 when the temperature of the air inlet channel is less than or equal to the set temperature and the temperature of the air inlet channel is less than the temperature of the air outlet 121.

[0185] In this embodiment of the present disclosure, when the temperature of the air inlet channel is less than or equal to the set temperature, it indicates that the airflow flowing into the air inlet channel is the airflow after sufficient heat exchange with the room. At this time, the oscillating blade 13 is controlled to extend along the extension direction of the air outlet 121, so that the air outlet 121 can be discharged into the room, ensuring the air volume and not interfering with the airflow of the air inlet channel.

[0186] Optionally, the plurality of oscillating blades 13 include a first oscillating blade group 131 and a second oscillating blade group 132, which are arranged along the length of the air outlet 121; wherein, the first oscillating blade group 131 and the second oscillating blade group 132 are both electrically connected to the controller, and the controller is configured to control the first oscillating blade group 131 and the second oscillating blade group 132 to rotate independently, so as to adjust the air outlet direction of the air outlet area corresponding to the first oscillating blade group 131 and the second oscillating blade group 132 respectively.

[0187] In this embodiment, the air outlet 121 is provided with an independently controlled first blade group 131 and a second blade group 132. In this way, the air outlet 121 can realize zoned air supply and zoned adjustment of air outlet direction. This not only improves the air outlet mode of the duct air conditioner, but also, when there are two air inlet channels, the first blade group 131 and the second blade group 132 can rotate in coordination with the two air inlet channels respectively, ensuring the air volume while avoiding short circuit of return air.

[0188] Optionally, the air inlet channel includes a first air inlet channel and a second air inlet channel, which are located at opposite ends of the length of the air outlet 121. The first swivel blade group 131 and the second swivel blade group 132 are arranged along the setting direction of the first air inlet channel and the second air inlet channel. In the case of the duct unit operating in heating mode, the controller is configured to control the first swivel blade group 131 to rotate towards the second swivel blade group 132 by a first set angle when the temperature of the first air inlet channel is greater than a first set temperature and the temperature of the first air inlet channel is less than the temperature of the air outlet 121, so that the air outlet direction of the first air outlet area corresponding to the first swivel blade group 131 is away from the first air inlet channel.

[0189] In this embodiment, when the temperature of the first air inlet channel is greater than the first set temperature and the temperature of the first air inlet channel is less than the temperature of the air outlet 121, the return air temperature of the first air inlet channel is higher. At this time, the airflow that has not been sufficiently heated is drawn in from the air outlet 121. At this time, the first sway vane group 131 is controlled to rotate toward the second sway vane group 132, so as to prevent the airflow flowing into the air outlet 121 from being drawn into the first air inlet channel.

[0190] Optionally, when the ducted air conditioner is operating in heating mode, the controller is configured to control the second blade group 132 to rotate towards the first blade group 131 by a second set angle when the temperature of the second air inlet channel is greater than the second set temperature and the temperature of the second air inlet channel is less than the temperature of the air outlet 121, so that the air outlet direction of the second air outlet area corresponding to the second blade group 132 is away from the second air inlet channel.

[0191] In this embodiment, when the temperature of the second air inlet channel is greater than the second set temperature and the temperature of the second air inlet channel is less than the temperature of the air outlet 121, the return air temperature of the second air inlet channel is higher. At this time, the airflow that has not been sufficiently heated is drawn in from the air outlet 121. At this time, the second blade group 132 is controlled to rotate toward the first blade group 131, so as to prevent the airflow flowing into the air outlet 121 from being drawn into the second air inlet channel.

[0192] Optionally, the ducted air conditioner includes a surround airflow mode, in which the controller is configured to control the first swashplate group 131 and the second swashplate group 132 to tilt in opposite directions, so that the air outlet 121 tilts to both sides along its length to deliver air. Here, surround airflow can promote the formation of indoor air circulation, reduce dead air zones, make the mixing of hot and cold air more uniform, improve indoor temperature regulation efficiency, and enhance the user experience.

[0193] Optionally, the oscillating blade 13 has an open position and a closed position. When multiple oscillating blades 13 rotate to the open position, adjacent oscillating blades 13 form an air outlet channel. When multiple oscillating blades 13 rotate to the closed position, adjacent oscillating blades 13 close the air outlet 121. The oscillating blade 13 has micropores that penetrate the oscillating blade 13 along its thickness direction. When multiple oscillating blades 13 rotate to the closed position, the airflow from the air outlet 121 flows out through the micropores.

[0194] In this embodiment, the oscillating blade 13 has an on / off mode for air supply and a off mode for micro-perforation air supply. When off, it prevents dust from entering the housing 10, while the micro-perforations provide gentle airflow, achieving imperceptible air supply and reducing noise. In addition, the off mode of micro-perforation air supply can maintain the basic indoor temperature, avoiding rapid fluctuations in indoor temperature caused by completely closing the air outlet 121, while also reducing frequent start-stop cycles and saving energy.

[0195] Optionally, the multiple blades 13 include a first blade group 131 and a second blade group 132, which are arranged along the length of the air outlet 121. The duct unit also includes a first connecting rod 134, a first motor 135, a second connecting rod 136, and a second motor 137. The first connecting rod 134 is connected to the multiple blades 13 of the first blade group 131; the first motor 135 is driven by the first connecting rod 134 to drive the first connecting rod 134 and the blades 13 of the first blade group 131 to rotate; the second connecting rod 136 is connected to the multiple blades 13 of the second blade group 132; and the second motor 137 is connected to the second connecting rod 136 to drive the second connecting rod 136 and the blades 13 of the second blade group 132 to rotate. Here, the first motor 135 and the second motor 137 drive the corresponding blade groups independently without interference, enabling differentiated angle adjustment of the blade groups on both sides to accurately adapt to the needs of zoned air supply.

[0196] Optionally, the electrical control box 40 is located on one side of the air outlet 121 along its length, and between the air outlet 121 and the air inlet end of at least one air inlet channel. The electrical control box 40's location on one side of the air outlet 121 along its length and between the air outlet 121 and the air inlet end does not affect air supply and intake efficiency, and facilitates quick maintenance of the electrical control box 40 through the reserved opening, thus improving the convenience of after-sales maintenance.

[0197] Optionally, the louvers are installed at the air outlet on the front panel.

[0198] In some alternative embodiments, such as Figures 27 to 31 As shown, the air inlet has a slide channel, and the duct air conditioner also includes a filter screen that is slidably installed in the slide channel to filter the airflow passing through the air inlet. The filter screen can be inserted into or removed from the slide channel from one end of the air inlet.

[0199] In this embodiment, a filter is installed at the air inlet of the ducted air conditioner to filter the airflow flowing into the receiving cavity, preventing dust and other foreign objects from entering the cavity. The filter is slidably mounted at the air inlet and can be inserted or removed from one end of the air inlet. Since the air inlet is located in the housing 11, which is situated within the ceiling space, the slidable filter facilitates its movement. This allows maintenance personnel to easily remove the filter from one end of the air inlet without additional operation when it needs to be disassembled. Similarly, when the filter needs to be installed, it can be inserted from one end of the air inlet, eliminating the need to disassemble complex structures such as the ceiling and housing 10. This reduces the difficulty for users in cleaning or replacing the filter and ensures timely filter cleaning.

[0200] Optionally, the duct air conditioner also includes a slide rail, which is located at the upper end and / or lower end of the air inlet. The slide rail is constructed with a slide channel that extends along the length of the air inlet. One end of the slide channel along the length of the slide channel is provided with an inlet and outlet. The filter screen can slide along the length of the slide channel and be pulled out from the inlet and outlet or inserted into the slide channel.

[0201] In this embodiment, the air inlet is equipped with a slide rail, which forms a slide channel to guide the filter's movement and prevent jamming or misalignment during the filter's movement. One end of the slide channel along its length is provided with an inlet and outlet, meaning the filter can be pulled out from either the left or right side of the air inlet. Since an air intake space is formed on one side of the duct unit along its length, there is sufficient space to operate the filter, making it convenient for the user to pull it out.

[0202] Optionally, one end of the filter screen is provided with a snap-fit ​​structure 713, and the inlet and outlet are provided with snap-fit ​​structures. When the filter screen moves to the installation position in the slide, the snap-fit ​​structure 713 engages with the snap-fit ​​structure to prevent the filter screen from leaving the slide.

[0203] In this embodiment of the present disclosure, after the filter screen is installed in place, the snap-fit ​​structure 713 automatically snaps into the snap-fit ​​mating structure, which can effectively limit the filter screen from falling out of the slide due to factors such as vibration, and prevent unfiltered airflow from directly entering the receiving cavity.

[0204] Optionally, the snap-fit ​​structure 713 includes a snap fastener, and the snap-fit ​​mating structure includes a snap-fit ​​edge. The snap-fit ​​structure 713 snaps into the snap-fit ​​mating structure, and the snap-fit ​​edge snaps into the snap fastener.

[0205] Optionally, one end of the filter screen is provided with a first limiting surface, and the inlet and outlet are provided with a second limiting surface. When the filter screen moves to the installation position in the slide, the first limiting surface and the second limiting surface abut against each other to limit the filter screen from being inserted into the slide.

[0206] In this embodiment of the present disclosure, when the first limiting surface abuts against the second limiting surface, it can both prompt the user that the filter is installed in place and limit the insertion depth of the filter to avoid excessive insertion of the filter.

[0207] In some optional embodiments, the filter includes a first filter 70, and the air inlet includes a first air inlet 116. The first air inlet 116 is located on the rear side of the housing 10. The first air inlet 116 is configured with a first slide rail 711, which extends along the length of the first air inlet 116. A first inlet / outlet 712 is provided at one end of the length of the first slide rail 711. The first filter 70 is slidably located within the first slide rail 711 and can be inserted into or removed from the first slide rail 711 through the first inlet / outlet 712. The slide rail includes a first slide rail 71, which is configured with the first slide rail.

[0208] In this embodiment, the first air inlet 116 is located on the rear side of the housing 10, which can make full use of the hidden space in the ceiling, expand the air intake area, provide sufficient airflow for the fan, and ensure the cooling and heating effect of the air conditioner. The first slide rail 711 extends along the length direction of the first air inlet 116, and a first inlet / outlet 712 is opened at one end of the length direction of the first slide rail 711. This allows the filter to be operated from the air intake channel, which not only prevents the filter from colliding and interfering with other structures during the installation and removal of the filter, but also ensures that there is sufficient space for the installation and removal of the filter.

[0209] Optionally, the housing 10 is also provided with a second air inlet 117, which is located on one side of the length direction of the housing 10. The duct air conditioner also includes a second filter 72, which is detachably provided at the second air inlet 117.

[0210] In this embodiment, a second air inlet 117 is provided on the side of the housing 10, which can increase the air intake volume of the ducted air conditioner and improve the heat exchange speed. The second filter 72 is used to filter the airflow flowing into the second air inlet 117.

[0211] Optionally, the housing 10 includes a second side wall 115, the second side wall 115 has a second air inlet 117, the second filter 72 is provided with a magnetic suction member 721, the second side wall 115 is provided with a magnetic attraction component, and when the second filter 72 is installed in the second air inlet 117, the magnetic suction member 721 and the magnetic attraction component are magnetically attracted to each other.

[0212] In this embodiment, the second filter 72 is installed on the second air inlet 117 by magnetic attraction, without the need for complex connection structures such as screws or clips, which improves the ease of installation and removal of the second filter 72.

[0213] In one specific embodiment, the ducted air conditioner has a first air inlet 116 and a second air inlet 117. The first air inlet 116 is located on the rear side of the housing 10, and the second air inlet 117 is located on at least one side along the length of the housing 10. The first air inlet 116 is provided with a first filter 70, and the second air inlet 117 is provided with a second filter 72. The first filter 70 is slidably disposed on the first air inlet 116, and the second filter 72 is magnetically disposed on the second air inlet 117. In this way, the first filter 70 and the second filter 72 are provided separately and can be disassembled, installed, and cleaned separately.

[0214] In some alternative embodiments, the housing 10 includes a first sidewall 114 and a second sidewall 115. The first sidewall 114 is located at the rear of the housing 10, and the second sidewall 115 is located at the left or right side of the housing 10. The first sidewall 114 has a first air inlet 116, and the second sidewall 115 has a second air inlet 117. The ducted air conditioner also includes a second slide rail 73, which is disposed at the first air inlet 116 and the second air inlet 117. The second slide rail 73 is constructed with a second slide channel 731. The second slide channel 731 extends along the length of the first air inlet 116 and the second air inlet 117 and connects the first air inlet 116 and the second air inlet 117. The filter includes a third filter 732, which is slidably disposed in the second slide channel 731 for filtering the airflow flowing through the first air inlet 116 and the second air inlet 117.

[0215] In this embodiment, the third filter 732 can simultaneously cover the first air inlet 116 and the second air inlet 117, achieving integrated filtration. This eliminates the need for multiple independent filters, simplifying the filter structure design and reducing manufacturing costs. Furthermore, the second slide 731 connects the first air inlet 116 and the second air inlet 117, providing stable guidance for the movement of the third filter 732, ensuring the stability of its movement, and facilitating filter installation and removal.

[0216] Optionally, the front end of the second slide rail 731 is provided with a second inlet / outlet 733, and the third filter 732 can slide along the length of the second slide rail 731 and be pulled out or inserted into the second slide rail 731 from the second inlet / outlet 733. In this embodiment, the second inlet / outlet 733 is located at the front end of the second slide rail 731, corresponding to the reserved opening in the ceiling. Users do not need to disassemble any structure and can directly contact the third filter 732 through the reserved opening, improving the ease of disassembly and assembly of the third filter 732. When it is necessary to disassemble the third filter 732, the third filter 732 can be pulled out from the second slide rail 731 from the second inlet / outlet 733; when it is necessary to install the third filter 732, the third filter 732 is inserted into the second slide rail 731 from the second inlet / outlet 733, and the third filter 732 can move along the second slide rail 731 until the third filter 732 covers the first air inlet 116 and the second air inlet 117.

[0217] Optionally, the filter screen is made of a flexible material, so that when the filter screen is pulled out or inserted, it can deform to avoid interference between the filter screen and the slide.

[0218] Optionally, the slide rail is provided with a slide channel, and the filter screen includes a sliding end that slides within the slide channel. The thickness of the sliding end is less than the width of the slide channel. The filter screen also includes a limiting rib 74, which is disposed at the sliding end and extends along the width direction of the slide channel to restrict the movement of the sliding end in the width direction of the slide channel. In this embodiment, the slide channel is formed by the slide rail. When the width of the slide channel cannot be too narrow due to limitations in material and molding process of the slide rail, the limiting rib 74 can ensure that the filter screen can contact the slide channel. Thus, even if the thickness of the sliding end is small, it can still restrict the movement of the filter screen within the slide channel, ensuring the operational stability of the filter screen.

[0219] Optionally, there are multiple limiting ribs 74, which are spaced apart along the length of the filter screen. This prevents the filter screen from deforming during disassembly and assembly. The spaced arrangement of multiple limiting ribs 74 ensures both the fit between the filter screen and the slide and the ability of the filter screen to deform and bend, preventing the filter screen from being unable to bend and deform due to the connection of multiple limiting ribs 74.

[0220] Optionally, a handle 76 is provided at one end of the filter screen. When the filter screen is inserted into the slide, the handle 76 is located outside the inlet and outlet, so that the filter screen can be operated through the handle 76, which facilitates the installation and removal of the filter screen.

[0221] Optionally, the snap-fit ​​structure 713 is provided on the handle 76. Optionally, the handle 76 is provided with a first limiting surface. When the filter screen is inserted into the slide, the first limiting surface is located on the side of the second limiting surface away from the slide, and the first limiting surface abuts against the second limiting surface.

[0222] Optionally, when the filter screen includes a first filter screen 70, the first filter screen 70 is provided with one or more of the aforementioned limiting ribs 74, handles 76, snap-fit ​​structures 713 and first limiting surfaces.

[0223] Optionally, when the filter screen includes a third filter screen 732, the third filter screen 732 is provided with one or more of the aforementioned limiting ribs 74, handles 76, snap-fit ​​structures 713 and first limiting surfaces.

[0224] Optionally, the filter includes multiple detachable filter segments to adjust its length. This allows the filter to fit different sizes of ducted air conditioners, improving its versatility.

[0225] Optionally, each filter segment is provided with a matching mounting hole 751 and mounting post. When two filter segments are connected, the mounting hole 751 of one filter segment is connected to the mounting post of the other filter segment to realize the connection of the two filter segments.

[0226] Optionally, the duct unit also includes an electrical control box 40, which is located on the front side of the duct unit and on one side of the air outlet 121 along its length.

[0227] Optionally, the housing 10 includes a first sidewall 114 and a second sidewall 115. The first sidewall 114 is located at the rear of the housing 10, and the second sidewall 115 is located at the left or right side of the housing 10. The first sidewall 114 has a first air inlet 116, and the second sidewall 115 has a second air inlet 117. The housing 10 also includes a third sidewall, which is opposite to the first sidewall 114 and has an air outlet 121. The electrical control box 40 is located on one side of the air outlet 121 along its length. The electrical control box 40 is located on the side of the air outlet 121 away from the second air inlet 117.

[0228] In this embodiment, the electrical control box 40 is located on the side of the air outlet 121 away from the second air inlet 117, avoiding the disassembly and assembly path of the air inlet and the filter, and reserving sufficient space for maintenance personnel to operate.

[0229] In other alternative embodiments, such as Figure 25 and Figure 26 As shown, this embodiment of the present disclosure provides a grille 80, which is detachably disposed at a reserved opening. The grille 80 includes grille segments 83 and a filter screen 84. There are multiple grille segments 83, including a first grille segment 86 and a second grille segment 87. The first grille segment 86 is provided with a first air vent 81. The filter screen 84 is detachably disposed at the first air vent 81. One end of the first grille segment 86 is detachably connected to one end of the second grille segment 87, and when one end of the first grille segment 86 is separated from one end of the second grille segment 87, the filter screen 84 can be pulled out from one end of the first grille segment 86.

[0230] In this embodiment, the grille 80 includes a detachable first grille segment 86 and a second grille segment 87. The first grille segment 86 is provided with a first air vent 81, and the second grille segment 87 may be provided with a second air vent 82 or without an air vent, depending on the requirements. A filter screen 84 is used to filter the airflow passing through the first air vent 81. When it is necessary to disassemble the filter screen 84 of the first air vent 81, the first grille segment 86 and the second grille segment 87 are separated, and then the filter screen 84 is pulled out from one end of the first grille segment 86. This improves the ease of disassembly and assembly of the filter screen 84, without the need to remove the entire grille 80 or other related structures, greatly simplifying the operation process of cleaning and replacing the filter screen 84, and improving the ease of disassembly and assembly of the grille 80 and the filter screen 84. Furthermore, when the filter screen 84 is installed on the first grille segment 86, and the first grille segment 86 and the second grille segment 87 are connected, the second grille segment 87 can also limit the filter screen 84, preventing the filter screen 84 from detaching.

[0231] Optionally, the first and second grid sections can be detachably connected by means of screws, clips, or magnets.

[0232] Optionally, the first grille segment 86 is provided with a track 85, which extends along the length of the first air vent 81 and opens towards one end of the second grille segment 87.

[0233] In this embodiment, the track 85 extends along the length of the first air vent 81, providing a stable sliding path for the filter 84, preventing the filter 84 from getting stuck or shifting during installation and removal, and ensuring that the filter 84 is precisely fitted to the first air vent 81 after installation. The track 85 has an opening at one end facing the second grille segment 87, facilitating the installation and removal of the filter 84. Furthermore, when the first grille segment 83 and the second grille segment 87 are connected, the second grille segment 87 also acts as a limiter for the filter 84, preventing it from detaching.

[0234] Optionally, the track 85 is provided with a first limiting protrusion 851, and the filter screen 84 is provided with a second limiting protrusion 852. When the filter screen 84 is installed in the first air outlet 81, the first limiting protrusion 851 is located at the end of the second limiting protrusion 852 facing the opening, and the first limiting protrusion 851 abuts against the second limiting protrusion 852 to prevent the filter screen 84 from leaving the track 85.

[0235] In this embodiment of the present disclosure, the first limiting protrusion 851 and the second limiting protrusion 852 abut against each other, which can effectively prevent the filter screen from falling off the track 85 due to vibration and airflow impact.

[0236] Optionally, one end of the filter screen 84 is provided with a handle protrusion 853. In this way, the handle protrusion 853 provides a clear grip point for the filter screen, and the user can directly grab the protrusion to pull out the filter screen without the need for tools or prying at the edge of the filter screen.

[0237] Optionally, the second grille segment 87 is configured with a second air vent 82, and when the first grille segment 86 is connected to the second grille segment 87, the first air vent 81 and the second air vent 82 are arranged at intervals.

[0238] In this embodiment of the present disclosure, the first air vent 81 and the second air vent 82 can be connected to different air inlets and outlets 121 of the air conditioner or duct air unit. This can meet the air inlet and outlet requirements and avoid airflow interference between the first air vent 81 and the second air vent 82, thereby reducing the risk of airflow short circuit.

[0239] Optionally, the distance between the first air vent 81 and the second air vent 82 is greater than or equal to 100 mm. This can prevent airflow interference between the first air vent 81 and the second air vent 82 and prevent airflow short circuits.

[0240] Optionally, the grille 80 is suitable for installation in a reserved opening in the ceiling, and a duct air conditioner is installed inside the ceiling. The duct air conditioner has an air inlet and an air outlet 121, and the outer side of the duct air conditioner has an air inlet channel communicating with the air inlet. The first air outlet 81 is a return air outlet 811, and the second air outlet 82 is a supply air outlet 821. The second air outlet 82 is suitable to correspond to and communicate with the air outlet 121 of the duct air conditioner, and the first air outlet 81 is suitable to correspond to and communicate with the air inlet channel.

[0241] In this embodiment, the grille 80 precisely corresponds to the air outlet of the ducted air conditioner. The first air outlet 81 is connected to the air inlet of the ducted air conditioner through an air inlet channel, and the second air outlet 82 is directly connected to the air outlet 121, eliminating the need for additional duct adjustments and simplifying the installation process. Furthermore, the grille 80 covers the reserved opening, so after the ducted air conditioner is installed in the ceiling space, only one reserved opening is required, and this opening is covered by the grille 80, which not only simplifies the installation convenience of the ducted air conditioner but also improves its appearance and aesthetics. The first air outlet 81 of the grille 80 is a return air outlet 811, and the filter 84 is located at the return air outlet 811, filtering the airflow into the air inlet channel and inside the ducted air conditioner. The air outlet 821 of the second grille section 87 is used to deliver air from the ducted air conditioner. When it is necessary to remove the filter 84, the second grille section 87 can be detached from the first grille section 86 to remove the filter 84 from the first grille section 86.

[0242] Optionally, the grille 80 is suitable for installation in a reserved opening in the ceiling, where a ducted air conditioner is installed, and the first air outlet 81 is connected to the air inlet or air outlet 121 of the ducted air conditioner; wherein, the length of the grille 80 is greater than the length of the ducted air conditioner.

[0243] In this embodiment, the grille 80 is installed at the reserved opening to divert the air inlet and outlet of the duct unit and prevent air leakage. Furthermore, the length of the grille 80 is greater than the length of the duct unit, so that the first air outlet 81 of the grille 80 is connected to the external air inlet channels on both sides of the duct unit along its length.

[0244] Optionally, the height of the grille 80 is greater than or equal to the height of the ducted air conditioner. This ensures the maximum airflow for both the intake and exhaust of the ducted air conditioner and facilitates the installation of the grille 80 with the ceiling.

[0245] Optionally, the grille 80 is suitable for installation in a reserved opening in the ceiling, and a ducted air conditioner is installed in the ceiling. The first air outlet 81 is connected to the air inlet or air outlet 121 of the ducted air conditioner, and an electrical control box 40 is provided on the side of the ducted air conditioner facing the grille 80. The first grille segment 86 or the second grille segment 87 corresponds to the electrical control box 40, so that when the first grille segment 86 or the second grille segment 87 is removed from the reserved opening, the electrical control box 40 can be exposed in the reserved opening.

[0246] In this embodiment, the grille 80 is positioned corresponding to the electrical control box 40. Removing the corresponding grille segment 83 exposes the electrical control box 40 without disassembling the entire grille 80 or the ceiling, providing ample operating space for the maintenance of the electrical control box 40 and reducing the difficulty of after-sales maintenance. The grille 80 simultaneously functions as an air vent, a filter installation area, and a maintenance passage, eliminating the need for an additional maintenance port 431, simplifying the product structure and improving the user experience.

[0247] Optionally, there are multiple first grille segments 86, and two of the multiple first grille segments 86 are located at both ends of the length direction of the second grille segment 87, and both first grille segments 86 are detachably connected to the second grille segment 87.

[0248] In this embodiment of the present disclosure, the first grille segment 86 is provided with a first air outlet 81, and the two first grille segments 86 are respectively located at both ends of the length direction of the second grille segment 87. That is to say, the two sides of the second grille segment 87 have two first air outlets 81, which can increase the air intake or air output of the duct machine and improve the flexibility of the air intake and exhaust mode.

[0249] Optionally, the ducted air conditioner body has an air inlet and an air outlet 121, and the outer side of the ducted air conditioner body has an air intake channel communicating with the air inlet. The air outlet 121 is located on the side of the ducted air conditioner body facing the grille 80. The air outlet 121 corresponds to and communicates with the second air outlet 82, and the first air outlet 81 corresponds to and communicates with the air intake channel. The grille 80 is detachably connected to the ducted air conditioner body. In this way, the grille 80 can be detachably connected to the ducted air conditioner body, and the grille 80 can be removed separately to maintain the filter or inspect the internal structure of the ducted air conditioner without disassembling the entire casing 10, thus improving the convenience of maintenance.

[0250] Optionally, the air outlet 121 is provided with a guide section, the front wall of which abuts against the second grille section 87. In this embodiment, the front wall of the guide section abuts against the second grille section 87, which can reduce leakage and resistance when the airflow flows out of the air outlet 121, ensuring that the airflow is smoothly delivered in a preset direction, thereby improving air delivery efficiency and temperature regulation effect. Optionally, the front panel is constructed with a guide section, which is located circumferentially around the air outlet and extends towards the grille.

[0251] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A cochlear tongue, characterized in that, The cochlear tongue has a concave portion, which includes: bottom wall; The connecting segments are respectively connected to both ends of the bottom wall along its length, and together with the bottom wall, they form an indentation. One of the connecting segments includes multiple interconnected arc-shaped wall segments, and all of the multiple arc-shaped wall segments slope downward toward the bottom wall.

2. The cochlear tongue according to claim 1, characterized in that, The bottom wall extends along the length of the cochlear tongue, and / or the concave portion is symmetrically arranged about the center line of the bottom wall, and the center line of the bottom wall is the center line of the cochlear tongue.

3. The cochlear tongue according to claim 1, characterized in that, L1≥L2, where L1 is the projected length of a connecting segment onto the plane containing the bottom wall, and L2 is half the length of the bottom wall; and / or, H1 < H2, where H1 is the height of a connecting segment and H2 is the maximum height of the fan outlet corresponding to the volute tongue; and / or, 0.1 ≤ H1 / L1 ≤ 0.5, where H1 is the height of a connecting segment, and L1 is the projected length of a connecting segment onto the plane containing the bottom wall; and / or, 0.05≤H1 / H2≤0.3, where H1 is the height of a connecting section and H2 is the maximum height of the fan outlet corresponding to the volute tongue.

4. The cochlear tongue according to claim 1, characterized in that, A connecting segment includes a first arc-shaped wall segment and a second arc-shaped wall segment, wherein the second arc-shaped wall segment connects the first arc-shaped wall segment and the bottom wall; Where L3 ≥ L4, L3 is the projected length of the first arc-shaped wall segment on the plane of the bottom wall, and L4 is the projected length of the second arc-shaped wall segment on the plane of the bottom wall; and / or, A connecting segment includes a first arc-shaped wall segment and a second arc-shaped wall segment, wherein the second arc-shaped wall segment connects the first arc-shaped wall segment and the bottom wall; Where H3 = H4, H3 is the height of the first arc-shaped wall segment, and H4 is the height of the second arc-shaped wall segment.

5. The volute tongue according to any one of claims 1 to 4, characterized in that, 0.1≤H5 / L5≤0.5, where H5 is the height of an arc-shaped wall segment, and L5 is the projected length of the arc-shaped wall segment onto the plane containing the bottom wall; and / or, The curvatures of the multiple curved wall segments in a connecting section are different.

6. A volute, characterized in that, Including the cochlea as described in any one of claims 1 to 5.

7. The volute according to claim 6, characterized in that, The volute defines an air outlet channel with a fan outlet. The air outlet channel includes a first wall and a second wall that are arranged opposite each other along the height direction of the fan outlet. The volute tongue is located at the end of the first wall away from the fan outlet. The first wall surface matches the cochlear tongue.

8. The volute according to claim 6, characterized in that, Also includes: The volute body defines an air outlet channel with a fan outlet, and the volute tongue is located in the air outlet channel; The volute body and the volute tongue are an integral structure.

9. A fan, characterized in that, Includes the volute as described in any one of claims 6 to 8.

10. A ducted air conditioner, characterized in that, Including the wind turbine as described in claim 9.

Images