Fresh air volute, fresh air module and ducted air conditioner

Abstract

A fresh air volute, a fresh air module, and a ducted air handling unit are disclosed, which can reduce the mold costs and production costs of the fresh air volute. The fresh air volute includes: a volute body with an air inlet, a fresh air inlet, a fresh air outlet, and an exhaust outlet, the volute body being an integral structure; the volute body includes a side panel, a volute tongue plate located inside the side panel, and an end plate connected to the side panel and the volute tongue plate; the air inlet and switching port are located on the end plate, and the fresh air inlet and fresh air outlet are located on the side panel; one end of the volute tongue plate is connected to the side panel, and the exhaust outlet is located between the other end of the side panel and the volute tongue plate; the fresh air inlet is configured to connect selectively to either the switching port or the exhaust outlet, the fresh air inlet, switching port, air inlet, and fresh air outlet can be connected to form a fresh air duct, and the air inlet, exhaust outlet, and fresh air inlet can be connected to form an exhaust air duct; and a cover plate located on one axial side of the volute body and opposite to the air inlet, the cover plate covering the volute body and enclosing the exhaust duct.

Description

[0001] This application is a divisional application of the application filed on October 26, 2023, with application number 202311409044.5 and invention title "A Fresh Air Casing, Fresh Air Module and Air Duct Machine". Technical Field

[0002] This application relates to, but is not limited to, the field of air conditioning technology, specifically referring to a fresh air volute, a fresh air module, and a duct air conditioner. Background Technology

[0003] Currently, traditional ducted air conditioner housings with fresh air functions are generally assembled from multiple parts, including an upper volute, a lower volute, and an air outlet frame. Both the upper and lower volutes have a spiral structure, which are joined together to form the fresh air inlet, fresh air outlet, and air duct. The air outlet frame is then attached to form the complete fresh air housing. This method results in high mold costs for the fresh air housing, leading to high overall production costs. Summary of the Invention

[0004] The technical problem to be solved by this application is to provide a fresh air volute, a fresh air module and a duct air conditioner, which can reduce the mold cost and production cost of the fresh air volute.

[0005] Therefore, this application provides a fresh air volute, comprising: a volute body and a cover plate. The volute body is provided with an air inlet, a fresh air inlet, a fresh air outlet, an exhaust outlet, and a switching port. The volute body is an integral structure, and the central axis of the air inlet is arranged along the axial direction of the volute body. The volute body includes a side panel, a volute tongue plate disposed inside the side panel, and an end plate connected to the side panel and the volute tongue plate. The air inlet and the switching port are disposed on the end plate, and the fresh air inlet and the fresh air outlet are disposed on the side panel. One end of the volute tongue plate is connected to the side panel, and the exhaust outlet is located between the other end of the side panel and the volute tongue plate. The inlet is configured to connect selectively to either the switching port or the exhaust outlet. The fresh air inlet, the switching port, the air inlet, and the fresh air outlet can connect to form a first airflow channel, which is a fresh air duct. The air inlet, the exhaust outlet, and the fresh air inlet can connect to form a second airflow channel, which is an exhaust duct. The cover plate is located on one axial side of the volute body and is opposite to the air inlet. The cover plate covers the volute body and surrounds the exhaust duct with the volute body. The duct includes the fresh air duct and the exhaust duct. The cover plate is made of foam, and the volute's spiral structure is located on the volute body.

[0006] The fresh air volute provided in this application includes a volute body and a cover plate. The volute body is a one-piece structure and has structures such as an air inlet, a fan mounting cavity, a fresh air inlet, a fresh air outlet, and an exhaust outlet. The cover plate is only connected to one axial end of the volute body, forming an air outlet duct with the volute body. Therefore, the volute structure only needs to be provided in the volute body, while the cover plate does not need to be set as a volute structure. The cover plate can even be formed without a mold, which helps to simplify the mold structure of the fresh air volute, thereby reducing mold costs and production costs.

[0007] Furthermore, the fresh air unit not only features a fresh air duct but also an exhaust duct. The fresh air duct draws in fresh outdoor air and exhausts stale indoor air, enriching the functionality of the fresh air module. This allows the module to function in both fresh air and exhaust modes, both of which contribute to improving indoor air quality. Thus, when outdoor air quality is good, the fresh air mode can be used to improve indoor air quality; conversely, when outdoor air quality is poor, the exhaust mode can be used to improve indoor air quality, thereby enhancing the user experience of the ducted air conditioner.

[0008] This application also provides a fresh air module, including: a housing; and a fresh air volute as described in any of the above embodiments, disposed within the housing and connected to the housing.

[0009] This application also provides a ducted air conditioner, including: a ducted air conditioner body; and a fresh air module as described in any of the above embodiments, connected to the ducted air conditioner body. Attached Figure Description

[0010] Figure 1 A three-dimensional structural schematic diagram of a ductwork unit provided for some embodiments of this application;

[0011] Figure 2 This is an exploded structural diagram of a fresh air module provided in some embodiments of this application;

[0012] Figure 3 for Figure 2 A partial exploded view of the fresh air module shown;

[0013] Figure 4 for Figure 2 The diagram shows the main view of the assembled fresh air module.

[0014] Figure 5 for Figure 4 The diagram shows the AA-direction cross-sectional view of the fresh air module in its first state (fresh air mode).

[0015] Figure 6 for Figure 4The diagram shows a cross-sectional view of the fresh air module in its second state (exhaust mode).

[0016] Figure 7 for Figure 4 The diagram shows a cross-sectional view of the fresh air module along the BB direction.

[0017] Figure 8 for Figure 2 The diagram shows a partial three-dimensional structure of the fresh air module in its first state (fresh air mode) after assembly.

[0018] Figure 9 for Figure 2 The diagram shows a partial three-dimensional structure of the fresh air module in its second state (exhaust mode) after assembly.

[0019] Figure 10 for Figure 2 A partial top view of the assembled fresh air module is shown.

[0020] Figure 11 for Figure 10 The diagram shows a cross-sectional view of the fresh air module in its first state (fresh air mode).

[0021] Figure 12 for Figure 11 Enlarged structural diagram of section D in the middle;

[0022] Figure 13 for Figure 10 The diagram shows a CC-direction cross-sectional view of the fresh air module in its second state (exhaust mode).

[0023] Figure 14 for Figure 2 A partial 3D structural diagram of the assembled fresh air module is shown.

[0024] Figure 15 for Figure 2 A three-dimensional structural diagram of the main body of the volute;

[0025] Figure 16 for Figure 15 A three-dimensional structural diagram of the volute body from another perspective;

[0026] Figure 17 for Figure 15 The diagram shows a three-dimensional structural schematic of the volute body from another perspective.

[0027] Figure 18 for Figure 15 The diagram shows a three-dimensional structural representation of the volute body from another perspective.

[0028] Figure 19 for Figure 2The diagram shows a partial three-dimensional structure of the assembled fresh air module.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Volute body, 11. First side plate, 111. Fresh air outlet, 112. First mounting part, 1121. First shaft hole, 113. Second mounting part, 1131. Second shaft hole, 114. Third mounting part, 1141. Third shaft hole, 115. Fourth mounting part, 1151. Fourth shaft hole, 116. First cable routing clip, 12. Second side plate, 121. Fresh air inlet, 13. Third side plate, 14. End plate, 141. Air inlet, 142. Switching port, 15. Exhaust outlet, 16. Volute tongue plate, 1 61. Arc segment, 162. Diffusion segment, 163. Second support section, 164. Guide section, 171. First reinforcing flange, 1711. Third support section, 1712. Fourth support section, 172. Second reinforcing flange, 1721. Reinforcing rib, 181. First sealing flange, 182. Second sealing flange, 183. Third sealing flange, 1831. Second wiring clip, 184. Fourth sealing flange, 185. Fifth sealing flange, 186. Sixth sealing flange, 187. Seventh sealing flange;

[0031] 2 cover plates, 21 air guide protrusions;

[0032] 3. Housing, 31. Top plate, 32. Bottom plate, 321. Inspection plate, 3211. Exhaust inlet, 322. Inspection notch, 33. Housing body, 331. Circumvention notch, 332. Folded edge, 34. Exhaust baffle, 341. Exhaust port, 35. Motor cavity.

[0033] 41 First motor, 42 Second motor, 43 Third motor, 44 Fourth motor;

[0034] 51 Fresh air inlet valve, 52 Switching valve, 53 Exhaust air outlet valve, 54 Fresh air outlet valve;

[0035] 6 filter components, 61 fresh air intake areas, 62 exhaust air intake areas;

[0036] 7 Duct connector, 71 First skirt, 72 Second skirt, 73 Sealing groove, 74 Sealing element;

[0037] 8 electrical control boxes;

[0038] 91 Air guide ring, 92 Wind wheel, 93 Wind wheel motor, 94 Motor cover;

[0039] 100 Fresh air module, 200 Ductless air conditioner body, 2022 Exhaust vent, 2024 Return air vent, 204 Electrical control module. Detailed Implementation

[0040] The principles and features of this application are described below with reference to the accompanying drawings. The examples given are only for explaining this application and are not intended to limit the scope of this application.

[0041] like Figures 1 to 19 As shown, this application embodiment provides a fresh air volute, a fresh air module 100, and a ducted air handling unit. The fresh air module 100 can be used in ducted air handling units or other types of air handling equipment.

[0042] like Figure 1 As shown in the embodiment of this application, the ducted air conditioning unit includes a ducted air conditioning unit body 200 and a fresh air module 100. The ducted air conditioning unit body 200 can be an indoor unit. The indoor unit can be connected to an outdoor unit. The indoor unit is concealed in the ceiling, and the outdoor unit is installed outdoors. The ducted air conditioning unit body 200 can also be an integrated unit. The ducted air conditioning unit body 200 can include a housing and an electrical control module 204. The fresh air module 100 and the electrical control module 204 can be located on opposite sides of the housing, such as... Figure 1 As shown.

[0043] like Figure 2 , Figure 3 , Figure 4 , Figure 10 As shown, the fresh air module 100 includes: a housing 3 and a fresh air volute. The fresh air module 100 may also include: a fan wheel 92, a fan wheel motor 93, a motor cover 94, an air guide ring 91, a filter assembly 6, an air outlet baffle 34, an electrical control box 8, and other structures.

[0044] like Figure 1 As shown, the ducted air handling unit body 200 is equipped with a return air inlet 2024, which allows indoor air to enter the ducted air handling unit body 200. Figure 1 As shown, the ducted air handling unit body 200 also has an exhaust vent 2022, which supplies the air that has undergone heat exchange within the ducted air handling unit body 200 to the room. The ducted air handling unit body 200 is typically rectangular. The exhaust vent 2022 can be located on the front wall of the ducted air handling unit, and the return air vent 2024 can be located on the bottom wall of the ducted air handling unit. This is based on the state after the ducted air handling unit is installed at the factory; that is, after installation, the return air vent 2024 is located on the downward-facing end wall of the ducted air handling unit, hence the downward-facing orientation of the return air vent 2024. However, during the assembly process before leaving the factory, the return air vent 2024 can be positioned upwards.

[0045] The ducted air conditioning unit is concealed within the suspended ceiling. The side panel of the ceiling has air supply vents corresponding to the exhaust vents 2022 of the main body 200 of the ducted air conditioning unit; air supply grilles can be installed at these vents. The bottom plate of the ceiling has return air vents corresponding to the return air vents 2024 of the main body 200 of the ducted air conditioning unit; return air grilles can be installed at these return air vents. Furthermore, the return air vents in the ceiling also serve as the maintenance access point for the ducted air conditioning unit (referred to as the second maintenance access point, e.g., ...). Figure 1 As shown in the diagram, this is used for maintenance of the ducted air unit during operation. During maintenance, the return air grille can be removed to expose the second maintenance port for inspection of the ducted air unit body 200.

[0046] Among them, such as Figure 1 As shown, the fresh air module 100 is located along the length of the duct unit body 200 (i.e., Figure 1 It is located on one side (left and right directions) and connected to the main body 200 of the air duct unit.

[0047] This design avoids increasing the depth of the ducted air conditioner (i.e., the depth to which the ducted air conditioner extends horizontally into the side wall of the ceiling) and allows the second access panel to form a long and narrow structure, which is more in line with the current mainstream decoration style.

[0048] In related technologies, traditional ducted air conditioner housings with fresh air functions are generally assembled from multiple parts, including an upper volute, a lower volute, and an air outlet frame. Both the upper and lower volutes have a spiral structure, which are joined together to form the fresh air inlet 121, fresh air outlet 111, and air duct, before the air outlet frame is installed to form a complete fresh air housing. This method results in high mold costs for the fresh air housing, leading to high overall production costs.

[0049] This application provides a fresh air volute, including: a volute body 1 and a cover plate 2, such as... Figure 2 , Figure 7 , Figure 11 , Figure 13 , Figure 14 As shown.

[0050] like Figures 15 to 18 As shown, the volute body 1 has an air inlet 141, a fresh air inlet 121, a fresh air outlet 111, and an exhaust outlet 15. The volute body 1 is a one-piece structure. The central axis of the air inlet 141 is arranged along the axial direction of the volute body 1.

[0051] like Figure 2 , Figure 7 , Figure 11 , Figure 13 , Figure 14As shown, cover plate 2 is located on one axial side of the volute body 1 and is positioned opposite to the air inlet 141. Cover plate 2 covers the volute body 1 and together with the volute body 1, encloses the air outlet duct. The air duct includes a fresh air duct and an exhaust air duct. The fresh air duct includes an airflow channel formed by connecting the fresh air inlet 121, the air inlet 141, and the fresh air outlet 111. The exhaust air duct includes an airflow channel formed by connecting the air inlet 141 and the exhaust outlet 15.

[0052] The fresh air volute provided in this embodiment includes a volute body 1 and a cover plate 2. The volute body 1 is an integral structure and is provided with an air inlet 141, a fan mounting cavity, a fresh air inlet 121, a fresh air outlet 111, and an exhaust outlet 15, etc. The cover plate 2 is only connected to one axial end of the volute body 1 and together with the volute body 1 encloses the air outlet duct. Therefore, the volute structure only needs to be provided in the volute body 1, while the cover plate 2 does not need to be set as a volute structure. The cover plate 2 can even be formed without a mold, which helps to simplify the mold structure of the fresh air volute, thereby reducing mold costs and production costs.

[0053] Furthermore, the fresh air module 100 not only has a fresh air duct but also an exhaust duct. The fresh air duct draws in fresh outdoor air and exhausts stale indoor air, thus enriching the functionality of the fresh air module 100. This allows the module to have both a fresh air mode and an exhaust mode, both of which contribute to improving indoor air quality. Therefore, when outdoor air quality is good, the fresh air mode can be used to improve indoor air quality, such as... Figure 5 , Figure 8 and Figure 11 As shown; when outdoor air quality is poor, indoor air quality can be improved by using the exhaust ventilation mode, such as... Figure 6 , Figure 9 and Figure 13 As shown, this helps to improve the user experience of the ducted air conditioner.

[0054] After the ducted air conditioner is assembled, the air inlet 141 of the fresh air volute faces downwards so that indoor stale air can be drawn in through the return air inlet 2024 on the bottom wall of the ceiling. The cover plate 2 is placed on the top of the fresh air volute.

[0055] Here, "facing downwards" and "top" refer to the state after the ducted air unit is concealed within the ceiling. The direction facing the ground is considered downwards, and the direction facing the ceiling is considered upwards. The bottom plate 32 of the fresh air module 100 housing 3 is at the bottom, and the top plate 31 is at the top. However, during the assembly process before the ducted air unit leaves the factory, the vertical relationship between the bottom plate 32 and the top plate 31 can be changed. For example, the air inlet 141 can be positioned upwards, the top plate 31 of the housing 3 can be a chassis, and the impeller motor 93 can be fixed to the top plate 31. After installing the impeller 92, impeller motor 93, fresh air volute, and other internal structures, the bottom plate 32 of the housing 3 is then placed on top.

[0056] In some exemplary embodiments, the cover plate 2 is a foam component.

[0057] In this way, the cover plate 2 can serve both sealing and heat insulation functions, eliminating the need for insulation foam between the fresh air volute and the fresh air module 100 housing 3. This simplifies the structure of the fresh air module 100 and further reduces production costs. Furthermore, this is equivalent to an integrated design for the fresh air volute, reducing the number of parts in the fresh air module 100, improving assembly efficiency, and avoiding sealing gaps between multiple volute components in related technologies. This results in a more cost-effective fresh air volute and better noise sealing performance. Of course, the cover plate 2 is not limited to foam components.

[0058] In some exemplary embodiments, the exhaust outlet 15 is configured to communicate with the fresh air inlet 121, such as... Figure 6 , Figure 9 and Figure 13 As shown. The exhaust duct also includes an airflow channel formed by the exhaust outlet 15 and the fresh air inlet 121.

[0059] In this way, the fresh air inlet 121 is used both for the intake of outdoor fresh air into the fresh air volute and for the exhaust of indoor stale air from the fresh air volute. Figure 6 , Figure 9 and Figure 13 As shown. In this way, outdoor fresh air can enter the room and indoor stale air can be discharged to the outside through a fresh air duct connected to the fresh air inlet 121, thus eliminating the need for an exhaust duct, which helps to simplify the structure of the ducted air conditioner and reduce its cost.

[0060] In some exemplary embodiments, the volute body 1 is further provided with a switching port 142 that can communicate with the fresh air inlet 121, such as... Figure 5 and Figure 6 As shown. The fresh air inlet 121 is configured to be connected to the air inlet 141 via the switching port 142; the fresh air inlet 121 is configured to be connected to either the switching port 142 or the exhaust outlet 15 to switch the airflow direction of the fresh air inlet 121.

[0061] In other words, the switching port 142 and the exhaust outlet 15 work together to control the airflow direction of the fresh air module 100, allowing the fresh air module 100 to switch between fresh air mode and exhaust mode. Fresh air mode refers to the operating mode that introduces fresh outdoor air into the indoor space. Exhaust mode refers to the operating mode that exhausts stale indoor air to the outside.

[0062] The exhaust outlet 15 and the switching port 142 are configured to connect only one of them to the fresh air inlet 121. In other words, the exhaust outlet 15 and the switching port 142 cannot be connected to the fresh air inlet 121 at the same time; only one of them can be connected to the fresh air inlet 121 in the same working mode.

[0063] The fresh air inlet 121 is configured to connect to the air inlet 141 via the switching port 142. Specifically, in fresh air mode, the fresh air inlet 121 is connected to the switching port 142 but isolated from the exhaust outlet 15. The switching port 142 is located downstream of the fresh air inlet 121 and upstream of the air inlet 141, with fresh air flowing sequentially through the fresh air inlet 121, the switching port 142, and the air inlet 141. In exhaust mode, the fresh air inlet 121 is connected to the exhaust outlet 15 but isolated from the switching port 142. The exhaust outlet 15 is located downstream of the air inlet 141 and upstream of the fresh air inlet 121, with indoor stale air flowing sequentially through the air inlet 141, the exhaust outlet 15, and the fresh air inlet 121.

[0064] In this way, the working mode of the fresh air volute can be switched by opening and closing the switching port 142 and the exhaust outlet 15, realizing the switching between fresh air mode and exhaust mode. The structure is simple and easy to implement.

[0065] When the switching port 142 is open and the exhaust outlet 15 is closed, the fresh air inlet 121 can connect to the switching port 142 and be isolated from the exhaust outlet 15. In this case, outdoor fresh air can flow sequentially through the fresh air inlet 121, the switching port 142, the air inlet 141, and the fresh air outlet 111 to enter the indoor space. Figure 5 , Figure 8 and Figure 11 As shown.

[0066] When the switching port 142 is closed and the exhaust outlet 15 is open, the fresh air inlet 121 can connect with the exhaust outlet 15 and be isolated from the switching port 142. In this way, indoor stale air can flow sequentially through the air inlet 141, the exhaust outlet 15, and the fresh air inlet 121, and be exhausted to the outdoor space. Figure 6 , Figure 9 and Figure 13 As shown.

[0067] In some exemplary embodiments, the switching port 142 and the air inlet 141 are disposed on the end wall of the volute body 1, and the switching port 142 is located radially outside the air inlet 141, such as... Figure 15 As shown.

[0068] The fresh air inlet 121 and the fresh air outlet 111 are located on the side wall of the volute body 1, such as Figure 15 and Figure 18 As shown. The exhaust outlet 15 is located inside the volute body 1 and between the fresh air inlet 121 and the fresh air outlet 111, as shown. Figure 5 and Figure 6 As shown, the exhaust outlet 15 is located radially outside the air inlet 141.

[0069] In this way, the airflow direction within the fresh air volute can be controlled simply by opening and closing the switching port 142, the exhaust outlet 15, and the fresh air outlet 111, thereby controlling the switching of the fresh air volute's operating mode. Furthermore, the fresh air duct and the exhaust air duct can share a portion of the airflow channel, which is beneficial for the miniaturization of the fresh air volute.

[0070] In both fresh air and exhaust modes, the airflow enters the impeller mounting cavity axially through the air inlet 141 and then exits tangentially through the impeller mounting cavity, flowing towards the fresh air outlet 111 (fresh air mode) or towards the exhaust outlet 15 and fresh air inlet 121 (exhaust mode). Therefore, the rotation direction of the impeller 92 does not need to be changed when switching between fresh air and exhaust modes. This simplifies the electrical control program of the impeller motor 93 and also simplifies the structure of the impeller blades 92.

[0071] In some exemplary embodiments, the central axis of the fresh air inlet 121 and the central axis of the exhaust outlet 15 are offset in the axial direction (i.e., vertical direction) of the volute body 1, such as... Figure 13 As shown, the distance between the central axis of the fresh air inlet 121 and the cover plate 2 is greater than the distance between the central axis of the exhaust outlet 15 and the cover plate 2. In other words, the position of the central axis of the fresh air inlet 121 is lower than the position of the central axis of the exhaust outlet 15, as shown. Figure 13 As shown.

[0072] This makes it easier to divide the air duct area near the fresh air inlet 121 into two layers: one layer for fresh air to flow towards the air inlet 141, and the other layer for stale air to be discharged outwards.

[0073] The cover plate 2 is provided with air guide protrusions 21, such as Figure 13 As shown. The air guide protrusion 21 is configured to guide the airflow discharged from the exhaust outlet 15 towards the fresh air inlet 121. The air guide protrusion 21 may have an arc-shaped airflow guiding surface. The air guide protrusion 21 may be an integral structure with the cover plate 2.

[0074] The air guide protrusion 21 can guide the polluted air, making it easier for the polluted air to flow smoothly to the fresh air inlet 121. This helps to avoid excessive airflow loss caused by large-angle turns during the flow of polluted air, and also helps to avoid excessive noise. In addition, it can also keep the volute of this part warm.

[0075] In some exemplary embodiments, the volute body 1 includes: side panels, a volute tongue plate 16, and an end plate 14, such as... Figure 17 and Figure 18 As shown. The volute tongue plate 16 is located on the inner side of the side panel. The end plate 14 is connected to the side panel and the volute tongue plate 16. One end of the volute tongue plate 16 is connected to the side panel, and the other end is spaced apart from the side panel, forming an air outlet channel communicating with the impeller mounting cavity.

[0076] Air inlet 141 and switching port 142 are located on end plate 14, such as Figure 15 As shown. The end plate 14 does not have to be a completely flat plate structure. For example, the end plate 14 can be partially inclined, with the switching port 142 located in the inclined part of the end plate 14, while the area of ​​the end plate 14 where the air inlet 141 is located can be a flat plate structure.

[0077] The fresh air inlet 121 and the fresh air outlet 111 are located on the side panel, such as Figure 15 and Figure 18 As shown. The exhaust outlet 15 is located between the side panel and the other end of the volute plate 16, as shown. Figure 16 As shown. The circumferential structure of the side panel can be irregular, and may include curved sections or straight sections, such as... Figure 15 and Figure 18 As shown, the specific design can be made according to the functional requirements of the volute.

[0078] In some exemplary embodiments, the volute body 1 has a first reinforcing flange 171 at one end (i.e., the upper end) facing the cover plate 2, such as... Figure 17 As shown. The first reinforcing flange 171 is provided along the circumference of the side panel. The provision of the first reinforcing flange 171 is beneficial to improving the structural strength of the volute body 1, thereby improving the reliability of the fresh air volute, and is also beneficial to the sealing of the first reinforcing flange 171 and the cover plate 2.

[0079] In some exemplary embodiments, the end of the volute tongue plate 16 facing the cover plate 2 is provided with a second reinforcing flange 172, such as... Figure 17 As shown. The second reinforcing flange 172 is designed to improve the structural strength of the volute body 1, thereby enhancing the reliability of the fresh air volute.

[0080] In some exemplary embodiments, the second reinforcing flange 172 is provided with reinforcing ribs 1721, such as... Figure 17As shown. The setting of the reinforcing rib 1721 is conducive to further improving the structural strength of the volute body 1, thereby further improving the reliability of the fresh air volute, and also conducive to the second reinforcing flange 172 abutting against the cover plate 2 to achieve sealing.

[0081] The second reinforcing flange 172 may have a groove, and reinforcing ribs 1721 are disposed within the groove. Multiple reinforcing ribs 1721 may be provided, spaced apart along the length of the second reinforcing flange 172. Figure 17 As shown, this is beneficial to effectively improve the structural strength of the volute body 1.

[0082] In some exemplary embodiments, the volute tongue plate 16 includes an arcuate segment 161 and a diffuser segment 162 connected to the arcuate segment 161, such as... Figure 16 As shown. The length of the diffuser section 162 can be, but is not limited to, greater than 10 mm. The arc section 161 and a portion of the side panel together form the impeller mounting cavity. The diffuser section 162 and a portion of the side panel form a diffuser channel. The volute tongue plate 16 may also include a guide section 164 extending toward the fresh air inlet 121, as shown. Figure 17 As shown, this facilitates the directing of polluted air to the fresh air inlet 121, which helps to further improve the smoothness of polluted air flow.

[0083] In some exemplary embodiments, the side panel includes a first side panel 11, a second side panel 12, and a third side panel 13 connected in sequence, such as... Figure 18 As shown. One end of the third side plate 13 (axial direction) is flush with the end plate 14 (as shown). Figure 15 and Figure 18 As shown, the other end (axially) is flush with the first side plate 11 and the second side plate 12 (as shown). Figure 16 and Figure 17 (As shown). Along the axial direction of the volute body 1, the height of the first side plate 11 and the second side plate 12 is greater than the height of the third side plate 13, as shown. Figure 15 and Figure 18 As shown. In other words, the first side plate 11 and the second side plate 12 are higher, while the third side plate 13 is lower. The third side plate 13 is mainly used to cooperate with the volute tongue plate 16 to form a volute-shaped air duct. The first side plate 11 and the second side plate 12 are mainly used to cooperate to form other areas such as fresh air ducts and exhaust air ducts.

[0084] like Figure 18 As shown, the fresh air outlet 111 is located on the first side plate 11, and the fresh air inlet 121 is located on the second side plate 12. Therefore, the first side plate 11 is located at the front end of the fresh air volute and extends in the left-right direction to allow fresh air to exit forward. The second side plate 12 extends in the front-back direction and is located to the left or right of the first side plate 11. Its length can be relatively small, but it is sufficient to accommodate the fresh air inlet 121 and to connect with the duct connector 7.

[0085] In this way, the end plate 14 can roughly divide the air duct of the fresh air volute into two layers: one layer for the airflow on the upstream side of the air inlet 141, and the other layer for the airflow on the downstream side of the air inlet 141.

[0086] In some exemplary embodiments, the circumferential edge of the first side plate 11 is provided with a first sealing flange 181, such as... Figure 15 As shown. The end plate 14, facing away from the cover plate 2, has a second sealing flange 182, as... Figure 15 As shown. The first sealing flange 181 is configured to abut against the housing 3 of the fresh air module 100, as... Figure 14 As shown. The second sealing flange 182 is configured to abut against the housing 3 of the fresh air module 100, as... Figure 14 As shown.

[0087] The first sealing flange 181 and the second sealing flange 182 can easily abut against the housing 3 of the fresh air module 100 to form a seal, which is beneficial to prevent air leakage and airflow loss, and also to prevent cold air from the room from flowing back into the fresh air volute and causing condensation.

[0088] Furthermore, the first sealing flange 181 can also strengthen the flange, which helps to improve the strength of the volute body 1 and thus improve the reliability of the volute body 1.

[0089] like Figure 15 As shown, the second sealing flange 182 can be flush with one end of the filter assembly 6, and the second sealing flange 182 can also extend to the third side plate 13. The side plate of the housing 3 can be provided with a folded edge 332, such as... Figure 14 As shown, the first sealing flange 181 and the second sealing flange 182 abut against the folded edge 332 and the bottom plate 32 of the housing 3 to form a seal.

[0090] In some exemplary embodiments, such as Figure 15 As shown, the surface of the first side plate 11 facing away from the air inlet 141 is provided with a first mounting part 112, a second mounting part 113, a third mounting part 114, and a fourth mounting part 115. The first mounting part 112 may be, but is not limited to, a threaded hole, a connecting post, etc. The second mounting part 113 may be, but is not limited to, a threaded hole, a connecting post, etc. The third mounting part 114 may be, but is not limited to, a threaded hole, a connecting post, etc. The fourth mounting part 115 may be, but is not limited to, a threaded hole, a connecting post, etc. The first mounting part 112, the second mounting part 113, the third mounting part 114, and the fourth mounting part 115 are arranged at intervals.

[0091] like Figure 14As shown, the first mounting part 112 is configured to mount the first motor 41. The first motor 41 is configured to be connected to the fresh air inlet valve 51 to drive the fresh air inlet valve 51 to open or close the fresh air inlet 121. The first motor 41 and the fresh air inlet valve 51 form a first opening and closing assembly for controlling the opening and closing of the fresh air inlet 121.

[0092] like Figure 14 As shown, the second mounting part 113 is configured to mount a second motor 42. The second motor 42 is configured to be connected to the switching valve 52 to drive the switching valve 52 to open or close the switching port 142. The second motor 42 and the switching valve 52 constitute a second opening and closing assembly for controlling the opening and closing of the switching port 142.

[0093] like Figure 14 As shown, the third mounting part 114 is configured to mount a third motor 43. The third motor 43 is configured to be connected to the exhaust outlet valve 53 to drive the exhaust outlet valve 53 to open or close the exhaust outlet 15. The third motor 43 and the exhaust outlet valve 53 form a third opening and closing assembly for controlling the opening and closing of the exhaust outlet 15.

[0094] like Figure 14 As shown, the fourth mounting part 115 is configured to mount the fourth motor 44. The fourth motor 44 is configured to be connected to the fresh air outlet valve 54 to drive the fresh air outlet valve 54 to open or close the fresh air outlet 111. The fourth motor 44 and the fresh air outlet valve 54 form a fourth opening and closing assembly for controlling the opening and closing of the fresh air outlet 111.

[0095] The first motor 41, the second motor 42, the third motor 43, and the fourth motor 44 can be, but are not limited to, stepper motors. The fresh air inlet valve 51, the switching valve 52, the exhaust air outlet valve 53, and the fresh air outlet valve 54 can be, but are not limited to, valve plates.

[0096] In this way, the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44 are installed in the same area and on the first side plate 11. Therefore, it is only necessary to set a detachable air outlet baffle 34 on the opposite side of the first side plate 11 to perform maintenance operations on the four motors in the area without disassembling the entire fresh air module 100. This helps to reduce the maintenance difficulty of the fresh air module 100 and thus reduces the maintenance cost of the maintenance module.

[0097] In some exemplary embodiments, such as Figure 15As shown, the first side plate 11 is provided with a first shaft hole 1121, a second shaft hole 1131, a third shaft hole 1141, and a fourth shaft hole 1151. The axes of the third shaft hole 1141 and the fourth shaft hole 1151 extend along the axial direction of the fresh air volute, that is, they extend in the vertical direction. The first shaft hole 1121 and the second shaft hole 1131 penetrate the first side plate 11 along the thickness direction, that is, they penetrate the first side plate 11 in the front-back direction.

[0098] like Figure 15 As shown, one end of the first shaft hole 1121 is located on the side of the first side plate 11 away from the air inlet 141 (i.e., on the front side of the air inlet 141), and is configured to install the end of the shaft connecting the fresh air inlet valve 51 to the first motor 41. This ensures that the first motor 41 can be installed on the front side of the first side plate 11. The second side plate 12 is provided with a first support part (not shown in the figure). The first support part is configured to support the end of the fresh air inlet valve 51 away from the shaft of the first motor 41. This ensures that the first motor 41 can drive the fresh air inlet valve 51 located on the rear side of the first side plate 11 to rotate.

[0099] like Figure 15 As shown, one end of the second shaft hole 1131 is located on the side of the first side plate 11 away from the air inlet 141 (i.e., on the front side of the air inlet 141), and is configured to install the end of the shaft connecting the switching air valve 52 to the second motor 42. This ensures that the second motor 42 can be installed on the front side of the first side plate 11. The volute plate 16 is provided with a second support part 163, such as... Figure 16 As shown, the second support 163 is configured to support the end of the switching air valve 52 away from the shaft of the second motor 42, thus ensuring that the second motor 42 can drive the switching air valve 52 located behind the first side plate 11 to rotate. The second support 163 can be provided on the upper end wall of the volute tongue plate 16 or on the side wall of the volute tongue plate 16 (i.e., the profile surface of the volute).

[0100] like Figure 15 As shown, one end of the third shaft hole 1141 is located on the side of the first side plate 11 away from the air inlet 141 (i.e., on the front side of the air inlet 141), and is configured to install the end of the shaft connecting the exhaust air valve 53 to the third motor 43. This ensures that the third motor 43 can be installed on the front side of the first side plate 11. A third support portion 1711 is provided on the side of the first side plate 11 near the air inlet 141, such as... Figure 16 As shown, the third support part 1711 is configured to support the exhaust air valve 53 away from the shaft end of the third motor 43, so that the third motor 43 can drive the exhaust air valve 53 located behind the first side plate 11 to rotate.

[0101] like Figure 15As shown, one end of the fourth shaft hole 1151 is located on the side of the first side plate 11 away from the air inlet 141 (i.e., on the front side of the air inlet 141), and is configured to install the end of the shaft connecting the fresh air outlet valve 54 to the fourth motor 44. This ensures that the fourth motor 44 can be installed on the front side of the first side plate 11. A fourth support portion 1712 is provided on the side of the first side plate 11 near the air inlet 141, such as... Figure 16 As shown, the fourth support part 1712 is configured to support the end of the shaft of the fresh air outlet valve 54 away from the fourth motor 44, so that the fourth motor 44 can drive the fresh air outlet valve 54 located behind the first side plate 11 to rotate.

[0102] The upper portion of the first sealing flange 181 may overlap with the upper portion of the first reinforcing flange 171. The third support portion 1711 and the fourth support portion 1712 may be located at the overlapping portion of the first sealing flange 181 and the first reinforcing flange 171.

[0103] Thus, the structural layout of the volute body 1 is relatively reasonable, which facilitates the installation of the fresh air inlet valve 51, the switching valve 52, the exhaust valve 53, and the fresh air outlet valve 54, as well as the installation of the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44. It also facilitates the connection between the fresh air inlet valve 51 and the first motor 41, the switching valve 52 and the second motor 42, the exhaust valve 53 and the third motor 43, and the fresh air valve and the fourth motor 44.

[0104] In some exemplary embodiments, the surface of the first side panel 11 facing away from the air inlet 141 (i.e., the front panel) is provided with a first wiring clip 116, such as... Figure 15 As shown. The second side plate 12 has a third sealing flange 183 at the end furthest from the cover plate 2 (i.e., the lower end), as shown. Figure 15 As shown, the third sealing flange 183 is configured to abut against the housing 3 of the fresh air module 100. The third sealing flange 183 is provided with a second wiring clip 1831, as shown... Figure 16 As shown.

[0105] This facilitates the routing of the wiring of the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44 along the wiring clips on the first side plate 11 and the second side plate 12, such as... Figure 19 As shown, this is beneficial for optimizing the line layout and preventing interference with structures such as the wind turbine 92.

[0106] Furthermore, the distance between the first wiring clip 116 and the base plate 32 cover plate 2 of the fresh air module 100 is less than the distance between the first wiring clip 116 and the top plate 31 of the fresh air module 100. Similarly, the distance between the second wiring clip 1831 and the base plate 32 cover plate 2 of the fresh air module 100 is less than the distance between the second wiring clip 1831 and the top plate 31 of the fresh air module 100. In other words, the first wiring clip 116 is located at the lower part of the first side plate 11, such as on the first sealing flange 181 at the lower end of the first side plate 11, and the second wiring clip 1831 is located at the lower end of the second side plate 12. This way, after the ducted air conditioner is concealed in the ceiling, the positions of the first, second, third, and fourth wiring cables are relatively low, facilitating maintenance by personnel. Figure 19 The dotted lines in the diagram indicate the direction of the first, second, third, and fourth line bodies.

[0107] The first wiring clip 116 and the second wiring clip 1831 can be, but are not limited to, clips, winding posts, etc.

[0108] In some exemplary embodiments, the volute body 1 is provided with a fourth sealing flange 184, such as... Figure 18 As shown. The fourth sealing flange 184 is arranged circumferentially along the fresh air inlet 121 and is configured to abut against the fresh air inlet valve 51 so that the fresh air inlet valve 51 can close the fresh air inlet 121.

[0109] In this way, when the fresh air module 100 needs to work, the fresh air inlet valve 51 can disengage from the fourth sealing flange 184 and open the fresh air inlet 121. When the fresh air module 100 does not need to work, the fresh air inlet valve 51 abuts against the fourth sealing flange 184, closing the fresh air inlet 121 and achieving a seal. This helps to prevent cold outdoor air from flowing back into the fresh air volute through the fresh air inlet 121 in extremely cold weather, which could cause condensation or even ice formation inside the fresh air volute and affect the components inside the fresh air volute.

[0110] In some exemplary embodiments, the volute body 1 is provided with a fifth sealing flange 185, such as... Figure 18 As shown. The fifth sealing flange 185 is located on the outside of the fresh air inlet 121 and is arranged circumferentially along the fresh air inlet 121, and is configured to abut against the sealing element 74 sleeved between the duct joint 7 and the volute body 1, as shown. Figure 12 As shown.

[0111] In this way, by utilizing the cooperation between the fifth sealing flange 185 and the sealing element 74, a sealed connection can be achieved between the volute body 1 and the duct joint 7, which helps to prevent air leakage at the volute body 1 and the duct joint 7.

[0112] In some exemplary embodiments, the fresh air module 100 further includes: a duct connector 7, such as... Figure 12As shown. The duct connector 7 is used to connect to the fresh air duct, which connects to the outdoor space to deliver outdoor fresh air into the fresh air module 100, and then outputs the fresh air to the indoor space through the fresh air outlet 111 via the air outlet 341. The duct connector 7 is connected to the volute body 1 and is connected to the fresh air inlet 121. The end of the duct connector 7 facing the volute body 1 has a nested first skirt 71 and a second skirt 72, as shown. Figure 12 As shown, a sealing groove 73 is formed between the first skirt 71 and the second skirt 72, and a sealing sponge (i.e., a sealing element 74) is provided inside the sealing groove 73. The fifth sealing flange 185 of the volute body 1 is inserted between the first skirt 71 and the second skirt 72 and abuts against the sealing sponge. This helps to improve the reliability of the connection between the duct joint 7 and the fresh air volute.

[0113] In some exemplary embodiments, the volute body 1 is provided with a sixth sealing flange 186, such as Figure 17 As shown. The sixth sealing flange 186 is arranged circumferentially along the exhaust outlet 15 and is configured to abut against the exhaust outlet valve 53 so that the exhaust outlet valve 53 can close the exhaust outlet 15.

[0114] In this way, when the exhaust outlet 15 needs to operate, the exhaust outlet valve 53 can disengage from the sixth sealing flange 186 and open the exhaust outlet 15. When the exhaust outlet 15 does not need to operate, the exhaust outlet valve 53 abuts against the sixth sealing flange 186, closing the exhaust inlet 3211 outlet and achieving a seal, which helps to improve the reliability of the exhaust outlet 15 closure.

[0115] The sixth sealing flange 186 may include three flanges, such as Figure 17 As shown. A flange can also be provided on the cover plate 2. The flange on the cover plate 2 and the aforementioned three flanges form a quadrilateral structure, which can abut against the exhaust valve 53 to achieve a seal.

[0116] In some exemplary embodiments, the volute body 1 is provided with a seventh sealing flange 187, such as... Figure 15 As shown. The seventh sealing flange 187 is arranged circumferentially along the fresh air outlet 111, and is configured to be flush with the air outlet 341 on the air outlet baffle 34 of the fresh air module 100 (as shown). Figure 3 (As shown) Insert and seal fit, such as Figure 7 As shown.

[0117] In this way, the seventh sealing flange 187 can achieve a sealing fit with the wall of the air outlet 341 of the air outlet baffle 34, such as... Figure 7As shown, this is to prevent indoor cold air from entering the area where the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44 are located (i.e., the area between the first side plate 11 of the fresh air volute and the air outlet baffle 34, which can be called the motor cavity 35) through the gap between the seventh sealing flange 187 and the air outlet baffle 34, which would cause condensation or even ice formation in the motor cavity 35 and adversely affect the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44.

[0118] like Figures 2 to 14 As shown in the embodiments, this application also provides a fresh air module 100, including: a housing 3 and a fresh air volute as described in any of the above embodiments. The fresh air volute is disposed inside the housing 3 and connected to the housing 3.

[0119] The fresh air module 100 provided in this application embodiment has all the above-mentioned beneficial effects because it includes the fresh air volute of any of the above embodiments, and will not be repeated here.

[0120] In some exemplary embodiments, the housing 3 includes: a top plate 31, a bottom plate 32, and a body 33, such as Figure 3 As shown. The bottom plate 32 and the top plate 31 are arranged opposite to each other, and the shell body 33 is located between the top plate 31 and the bottom plate 32, and is connected to the top plate 31 and the bottom plate 32. The cover plate 2 of the fresh air volute is fixed to the top plate 31. The cover plate 2 can be fixed to the top plate 31 by the clamping action between the volute body 1 and the top plate 31, as shown. Figure 7 As shown. Here, the top plate 31 and bottom plate 32 are based on the state after the ducted air conditioner is concealed within the ceiling, with the top plate 31 on top and the bottom plate 32 on the bottom. However, during the assembly process before the ducted air conditioner leaves the factory, the vertical relationship between the bottom plate 32 and the top plate 31 can be changed. For example, the bottom plate 32 can be positioned higher, the top plate 31 can be a chassis, the impeller motor 93 can be fixed to the top plate 31, and after installing the impeller 92, impeller motor 93, fresh air volute, and other internal structures, the bottom plate 32 can be placed on top.

[0121] The base plate 32 includes a removable access panel 321, such as... Figure 1 and Figure 2 As shown. The base plate 32 has an inspection notch 322, such as... Figure 3 As shown. A maintenance panel 321 is installed over the maintenance notch 322. The maintenance panel 321 is positioned opposite at least a portion of the air inlet 141.

[0122] When installing a ducted air conditioning unit, the return air vent on the ceiling base plate 32 can be lengthened so that the inspection plate 321 of the fresh air module 100 is located within the air supply vent area. This allows the return air vent in the ceiling to form a long and narrow structure, which is more in line with current mainstream decoration styles. Furthermore, by disassembling the return air grille and inspection plate 321, at least a portion of the impeller 92 and impeller motor 93 can be seen, facilitating maintenance of the impeller 92 and impeller motor 93. This further reduces the difficulty and cost of maintaining the fresh air module 100.

[0123] The division of the top plate 31, bottom plate 32, and shell 33 is based solely on their relative positions; the specific number of components included in the shell 3 is not limited. For example: Figure 2 As shown, the top plate 31 can form an integral structure with the left (or right) side plate of the housing 33, and a portion of the bottom plate 32 can form an integral structure with the front side plate of the housing 33. The right (or left) side plate of the housing 33 forms an integral structure with the rear side plate. The remaining portion of the bottom plate 32 can be further divided into an inspection plate 321 and other baffles. The width of the inspection plate 321 can be approximately equal to the width of the return air vent. The width of the portion of the bottom plate 32 integrated with the front side plate can be approximately equal to the width of the motor cavity 35.

[0124] like Figure 3 , Figure 5 , Figure 6 , Figure 11 , Figure 13 , Figure 14 As shown, the fresh air module 100 also includes a first motor 41, a second motor 42, a third motor 43, a fourth motor 44, a fresh air inlet valve 51, a switching valve 52, an exhaust air outlet valve 53, and a fresh air outlet valve 54, all located on the volute body 1.

[0125] The housing 33 includes a front panel located between the fresh air volute and the air outlet baffle 34. The front panel has a clearance notch 331, such as... Figure 3 As shown. The clearance notch 331 is configured to avoid the seventh sealing flange 187, the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44 of the volute body 1. The fresh air module 100 also includes an air outlet baffle 34 detachably connected to the housing 3. The air outlet baffle 34 is configured to cover the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44 to prevent them from being exposed, which helps improve the aesthetics of the fresh air module 100 and protects the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44. The air outlet baffle 34 has an air outlet 341 adapted to the seventh sealing flange 187 of the volute body 1, such as... Figure 3As shown, the seventh sealing flange 187 is inserted into the air outlet 341 to prevent indoor cold air from entering the motor cavity 35 and causing condensation.

[0126] When any of the first motor 41, second motor 42, third motor 43, or fourth motor 44 requires maintenance, the air supply grille and air outlet baffle 34 can be removed to expose the motors. Therefore, maintenance can be performed on these motors through the ceiling air supply vents without disassembling the entire fresh air module 100. Thus, at least for maintenance of the first motor 41, second motor 42, third motor 43, and fourth motor 44 of the fresh air module 100, it is not necessary to disassemble the entire fresh air module 100, thereby reducing the difficulty and cost of maintenance.

[0127] The clearance gap 331 can be a single gap or multiple gaps that are set separately. The shape and size of the clearance gap 331 are not limited, as long as the parts that need to be repaired are exposed (to meet the repair needs of these parts) and the fresh air outlet 111 (to ensure that the fresh air outlet 111 can be connected to the air outlet 341).

[0128] In some exemplary embodiments, the inspection plate 321 is provided with an exhaust inlet 3211, such as... Figure 2 As shown, the exhaust inlet 3211 is connected to the air inlet 141. Since the inspection plate 321 is located within the return air vent area of ​​the suspended ceiling, it is convenient to draw in indoor stale air through the same return air vent in the suspended ceiling. This eliminates the need for additional openings in the suspended ceiling corresponding to the exhaust inlet 3211, which helps reduce the installation difficulty of the ducted air conditioner. The installation method of the suspended ceiling is consistent with that of a conventional ducted air conditioner, requiring only an appropriate extension of the length of the supply and return air vents, and does not violate the mainstream trend of modern decoration.

[0129] In some exemplary embodiments, the fresh air module 100 further includes a fifth opening and closing component (not shown in the figure). The fifth opening and closing component is disposed on the inspection plate 321 and is used to control the opening and closing of the exhaust air inlet 3211. The fifth opening and closing component includes a fifth motor and an exhaust air inlet valve. The fifth motor is connected to the exhaust air inlet valve and is configured to drive the exhaust air inlet valve to open or close the exhaust air inlet 3211. Thus, when the fifth motor needs maintenance, the return air grille and inspection plate 321 can be removed for maintenance without disassembling the entire fresh air module 100, thereby further reducing the maintenance difficulty and cost of the fresh air module 100.

[0130] In some exemplary embodiments, the pivot of the fresh air inlet valve 51 is located at one end of the fresh air inlet valve 51, and can switch the fresh air inlet valve 51 from a closed position to an open position (e.g., Figure 11 When the switch valve 52 is in the open position (as shown), it rotates towards the base plate 32 (i.e., downwards). The pivot of the switch valve 52 is located at one end of the switch valve 52, and it can move the switch valve 52 from the open position (as shown) to the lower position. Figure 11 (As shown) Switch to the off position (e.g.) Figure 13 When shown, rotate towards the direction closer to the base plate 32 (i.e., rotate downwards).

[0131] In this way, during exhaust operation, the fresh air inlet valve 51 rotates downward to open the fresh air inlet 121, and the switching valve 52 rotates downward to close the switching port 142. Thus, the motor force, its own weight, and the pressure of the exhaust airflow all exert downward rotational forces on both the fresh air inlet valve 51 and the switching valve 52. This helps prevent the fresh air inlet valve 51 from vibrating due to the inconsistent forces from these three factors, and also ensures that the switching valve 52 closes more tightly, thereby improving the reliability of closing the switching port 142.

[0132] In some exemplary embodiments, based on the fact that the fresh air inlet valve 51 is in the open position, the angle β between the fresh air inlet valve 51 and the first direction (e.g., Figure 13 (As shown) The angle can be within the range of 30° to 90°, such as 30°, 45°, 60°, 75°, 90°, etc. Since the fresh air inlet valve 51 is in the closed position, the angle between the fresh air inlet valve 51 and the first direction can be 180°. The first direction is along the axial direction of the volute body 1 and points from the top plate 31 to the bottom plate 32, i.e., the direction of gravity.

[0133] This helps improve the stability of the position of the fresh air inlet valve 51 under exhaust conditions, and the rotation range of the fresh air inlet valve 51 will not be too large, thus preventing the pipe diameter of the duct joint 7 from being too large.

[0134] In some exemplary embodiments, based on the switching valve 52 being in the closed position, the angle α between the switching valve 52 and the first direction (e.g., Figure 13 (As shown) The angle can be within the range of 30° to 90°, such as 30°, 45°, 60°, 75°, 90°, etc. Since the switching valve 52 is in the open position, the angle between the switching valve 52 and the first direction can be greater than 90° and less than 180°. The first direction is along the axial direction of the volute body 1 and points from the top plate 31 to the bottom plate 32, i.e., the direction of gravity.

[0135] This helps improve the stability of the position of the switching valve 52 in the exhaust state, and the rotation range of the switching valve 52 is not too large, thus facilitating the miniaturization of the suction volute.

[0136] In some exemplary embodiments, the switching air valve 52 is linked with the exhaust air valve 53 for control.

[0137] Since the fresh air inlet 121 is selectively connected to either the exhaust outlet 15 or the switching port 142, their opening and closing are interrelated. When the exhaust outlet 15 is open, the switching port 142 must be closed, corresponding to the exhaust mode. When the switching port 142 is open, the exhaust outlet 15 must be closed, corresponding to the fresh air mode. Therefore, the switching valve 52 and the exhaust outlet valve 53 can be linked for control, simplifying the electrical control program and structure of the fresh air module 100.

[0138] The difference between the rotation angle range of the switching damper 52 and the rotation angle range of the exhaust damper 53 can be, but is not limited to, less than or equal to 20°. In this way, the switching damper 52 and the exhaust damper 53 can be controlled to open and close through the same terminal, which helps to simplify the electrical control program of the fresh air module 100.

[0139] In some exemplary embodiments, the fresh air module 100 further includes a filter assembly 6, such as... Figure 2 As shown. The filter assembly 6 is erected between the base plate 32 and the volute body 1, and is located between the switching port 142 and the air inlet 141. Furthermore, the filter assembly 6, together with the volute body 1 and the housing 3, divides the space between the base plate 32 and the volute body 1 into a fresh air intake area 61 and an exhaust air intake area 62 located on both sides of the filter assembly 6, as shown. Figure 8 , Figure 9 and Figure 19 As shown.

[0140] In this way, the fresh air intake area 61 and the exhaust air intake area 62 can be separated by the filter assembly 6, which helps to prevent polluted air from passing through the filter assembly 6 and also helps to prevent polluted air from overflowing into the fresh air intake area 61, thus improving airflow efficiency.

[0141] like Figure 1 As shown in the embodiments of this application, a ducted air conditioner is also provided, including: a ducted air conditioner body 200; and a fresh air module 100 as described in any of the above embodiments, connected to the ducted air conditioner body 200.

[0142] The duct air conditioner provided in this application includes the fresh air module 100 of any of the above embodiments, and therefore has all the above-mentioned beneficial effects, which will not be repeated here.

[0143] In summary, the fresh air volute, fresh air module 100, and duct air conditioner provided in this application embodiment have the following characteristics:

[0144] The volute body 1 is compatible with the opening, closing, and switching functions of the fresh air inlet valve 51, the switching valve 52, the exhaust air outlet valve 53, and the fresh air outlet valve 54; the other part of the volute (i.e., the cover plate 2) is replaced by a foam component, which is fixed to the chassis of the housing 3 (i.e., the top plate 31). The impeller motor 93 is fixed to the chassis of the housing 3 and is fixed by the motor cover 94.

[0145] The other part of the volute (i.e., cover plate 2) is made of foam, which saves costs and mold expenses, and also eliminates the need for the thermal insulation sponge on the chassis while still providing insulation. In addition, the integrated design of the volute avoids sealing gaps between the mating parts, making it more cost-effective and providing better noise sealing performance.

[0146] The fresh air module 100 mainly comprises: a housing 3 (including a roughly L-shaped lower front panel, a roughly L-shaped right rear panel, a roughly L-shaped upper left panel (including a top panel 31), a bottom cover, and a maintenance panel 321), a fresh air volute (including a cover plate 2 and a volute body 1), an air guide ring 91, a filter assembly 6, an air outlet baffle 34 (which may have a flanged edge to form an air outlet flange), a duct connector 7, and an electrical control box 8. The air outlet flange is fixed to the front panel (i.e., the front panel of the lower front panel), and the duct connector 7 is fixed to the right rear panel. The foam cover plate 2 is fixed to the top panel 31, forming an air duct with the volute body 1 and providing insulation for the top panel 31.

[0147] The fresh air intake area 61 and the exhaust air intake area 62 are located on the lower side (intake side) of the fresh air volute and are separated by the first sealing flange 181, the second sealing flange 182, the third sealing flange 183 and the HEAPA mesh (i.e., filter assembly 6) of the volute body 1. The fresh air intake area 61 is mainly composed of the first side plate 11, the second side plate 12, the end plate 14, the HEAPA mesh, the bottom cover and the flange 332 on the left side plate of the volute body 1.

[0148] The fresh air outlet area and the exhaust air area are located on the upper side (outlet side) of the volute body 1. When the fresh air outlet valve 54 and the switching valve 52 are open, the exhaust air outlet valve 53 rotates to the flange of the volute tongue diffuser section 162 (i.e., the sixth sealing flange 186), closing the exhaust outlet 15, which is the fresh air outlet state; conversely, when the fresh air outlet valve 54 and the switching valve 52 are closed and the exhaust air outlet valve 53 is open, it is the exhaust air outlet state.

[0149] In exhaust mode, the switching valve 52 is closed, and the fresh air inlet valve 51 is open. The angle between the switching valve 52 and the fresh air inlet valve 51 and the direction of gravity is 30°-90°. Under the combined action of the motor closing force, the valve plate gravity, and the air pressure and direction, the switching valve 52 closes more tightly, and the fresh air inlet valve 51 avoids vibration due to different directions of force. In addition, to ensure smoother exhaust, air guide protrusions 21 are provided on the foam cover plate 2, which guide air and also provide insulation for this part of the volute.

[0150] In fresh air mode, exhaust outlet valve 53 closes exhaust outlet 15, and switching valve 52 opens switching port 142. In addition, the rotation angles of the two valves can be set to differ by no more than 20°. When these two valves are working, the motors are linked for control, and the electrical control can use the same terminal to control the opening and closing of these two valves.

[0151] A fourth sealing flange 184 and a fifth sealing flange 185 are provided on the first side plate 11 of the volute body 1. The purpose of the fresh air inlet valve 51 is to prevent cold air from flowing back into the fresh air module 100, causing internal condensation or even icing. The valve motor (i.e., the first motor 41) is fixed to the fresh air outlet side (i.e., the front panel of the first side plate 11). The fresh air inlet valve 51 abuts against the fourth sealing flange 184 for sealing. The fifth sealing flange 185 abuts against the sponge of the duct connector 7. The fifth sealing flange 185 is positioned between the first skirt 71 and the second skirt 72 of the duct connector 7 to form a seal.

[0152] Flanged edges (i.e., first sealing flanges 181) are provided around the first side plate 11 of the volute body 1. This increases the strength of the volute and forms a sealed cavity (i.e., motor cavity 35) with the shell body 33, bottom plate 32, and top plate 31 of the bottom plate 32, effectively preventing condensation in the motor in this area. The rotation axis of the fresh air outlet valve 54 and the exhaust air outlet valve 53 extends vertically. The third motor 43 and the fourth motor 44 are fixed to the motor cover, which is then fixed to the first side plate 11 of the volute body 1. A first wiring buckle 116 is provided on the surface of the volute parallel to the air outlet baffle 34 (i.e., the front plate surface of the first side plate 11) for wiring. A flange (i.e., third sealing flange 183) is also provided on the surface of the volute parallel to the width direction of the body (i.e., the second side plate 12). This flange is used for sealing with the bottom plate 32, and a second wiring buckle 1831 is provided on this flange for wiring such as motor wires.

[0153] The fresh air outlet 111 has a seventh sealing flange 187 extending around its perimeter, which is aligned with the air outlet 341 corresponding to the air outlet baffle 34 to effectively prevent condensation.

[0154] The upper end of the volute body 1 is provided with a full-circumference flange (i.e., the first reinforcing flange 171) to ensure the strength of the integrated volute body 1. The volute tongue plate 16 is also provided with a flange (i.e., the second reinforcing flange 172), and a reinforcing rib 1721 may be provided on the back of the flange.

[0155] At the exhaust outlet 15, the volute body 1 is provided with three flanges (i.e., the sixth sealing flange 186) for sealing with the exhaust outlet valve 53. The other sealing surface is set on the foam cover plate 2 to ensure that all four sides of the exhaust outlet valve 53 can abut against the sealing flange to ensure the reliability of closing the exhaust outlet 15.

[0156] The volute has a large flanged surface (i.e., the first side plate 11) in the air outlet direction. One end of the fresh air outlet valve 54 (i.e., the end of the shaft connecting the fourth motor 44) is located on the first side plate 11, and the other end (i.e., the end of the shaft away from the fourth motor 44) is located on the upper flange of the volute (i.e., the first reinforcing flange at the upper end). One end of the switching valve 52 (i.e., the end of the shaft connecting the second motor 42) is located on the first side plate 11, and the other end (i.e., the end of the shaft away from the second motor 42) is located on the end wall of the volute tongue plate 16 or on the volute profile surface of the volute tongue plate 16 opposite to the first side plate 11.

[0157] The end plate 14 of the volute body 1 is also provided with a buckle for fixing the air guide ring 91 and a flange for strengthening positioning, as well as a wiring buckle for communication and power supply connection between the fresh air module 100 and the air duct body 200.

[0158] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0159] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0160] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0161] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0162] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0163] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A fresh air volute, characterized in that, include: The main body of the volute and the cover plate; The volute body is provided with an air inlet, a fresh air inlet, a fresh air outlet, an exhaust outlet, and a switching port. The volute body is an integral structure, and the central axis of the air inlet is arranged along the axial direction of the volute body. The volute body includes a side panel, a volute tongue plate disposed inside the side panel, and an end plate connected to the side panel and the volute tongue plate. The air inlet and the switching port are located on the end plate, the fresh air inlet and the fresh air outlet are located on the side plate, one end of the volute plate is connected to the side plate, and the exhaust outlet is located between the other end of the side plate and the volute plate. The fresh air inlet is configured to be able to connect to either the switching port or the exhaust outlet. The fresh air inlet, the switching port, the air inlet, and the fresh air outlet can be connected to form a first airflow channel, which is a fresh air duct. The air inlet, the exhaust outlet, and the fresh air inlet can be connected to form a second airflow channel, which is an exhaust air duct. The cover plate is located on one axial side of the volute body and is opposite to the air inlet. The cover plate covers the volute body and together with the volute body, encloses the air outlet duct. The air outlet duct includes the fresh air duct and the exhaust air duct. The cover plate is a foam component, and the volute structure is located on the volute body.

2. The fresh air volute according to claim 1, characterized in that, The volute tongue plate includes an arc segment and a diffuser segment connected to the arc segment. The arc segment and a portion of the side panel together form a wind turbine mounting cavity, and the diffuser segment and a portion of the side panel together form a diffuser flow channel.

3. The fresh air volute according to claim 2, characterized in that, The length of the diffuser section is greater than 10 mm.

4. The fresh air volute according to claim 2, characterized in that, The volute also includes a guide section extending toward the fresh air inlet.

5. The fresh air volute according to any one of claims 1 to 4, characterized in that, The end plate is partially tilted, and the switching port is located on the tilted portion of the end plate.

6. The fresh air volute according to any one of claims 1 to 4, characterized in that, The side panel includes a first side panel, a second side panel, and a third side panel connected in sequence; one end of the third side panel is flush with the end plate, and the other end is flush with the first side panel and the second side panel; along the axial direction of the volute body, the height of the first side panel is greater than the height of the third side panel; the fresh air outlet is located on the first side panel, and the fresh air inlet is located on the second side panel.

7. The fresh air volute according to claim 6, characterized in that, The circumferential structure of the side panel includes an arc portion and a straight portion. The straight portion includes the first side panel and the second side panel, and the arc portion includes the third side panel.

8. The fresh air volute according to any one of claims 1 to 4, characterized in that, The cover plate is provided with air guide protrusions, which are configured to guide the airflow discharged from the exhaust outlet to the fresh air inlet.

9. The fresh air volute according to claim 8, characterized in that, The air guide protrusion has an arc-shaped airflow guiding surface; and / or, The air guide protrusion and the cover plate are an integral structure; and / or, The volute body is provided with a sixth sealing flange, which is arranged around the circumference of the exhaust outlet and is configured to abut against the exhaust outlet valve. The sixth sealing flange includes three flanges, and the cover plate is provided with one flange. The flange of the cover plate and the three flanges together form a quadrilateral structure, which can abut against the exhaust outlet valve to achieve a seal.

10. A fresh air module, characterized in that, include: case; and The fresh air volute as described in any one of claims 1 to 9 is disposed within the housing and connected to the housing.

11. The fresh air module according to claim 10, characterized in that, The shell includes a top plate, a bottom plate disposed opposite to the top plate, and a shell body located between the top plate and the bottom plate. The top plate and the left or right side plate of the shell body form an integral structure, and a portion of the bottom plate and the front side plate of the shell body form an integral structure. The cover plate of the fresh air volute is fixed to the top plate. The fresh air module also includes: a wind turbine, a wind turbine motor and a motor cover. The foam component is fixed to the top plate. The wind turbine motor is fixed to the top plate and is secured by the motor cover. The base plate includes a detachable maintenance plate, which is provided with an exhaust inlet; The fresh air module further includes a filter assembly, which is erected between the base plate and the volute body, and located between the switching port and the air inlet of the volute body. The filter assembly is configured to cooperate with the volute body and the housing to divide the space between the base plate and the volute body into a fresh air inlet area and an exhaust air inlet area located on both sides of the filter assembly.

12. The fresh air module according to claim 11, characterized in that, The fresh air intake area and the exhaust air intake area are located on the intake side of the fresh air volute; and / or The fresh air module also includes an air outlet baffle that is detachably connected to the housing. The front side plate of the housing is located between the fresh air volute and the air outlet baffle, and the front side plate is provided with an avoidance notch.

13. The fresh air module according to claim 11, characterized in that, The filter assembly is arc-shaped, and the fresh air module further includes an air guide ring disposed at the air inlet, with the filter assembly mounted on the air guide ring; and / or The cover plate is fixed to the top plate by the clamping force between the volute body and the top plate.

14. A ducted air conditioner, characterized in that, include: Ductless air conditioner body; and The fresh air module as described in any one of claims 10 to 13 is connected to the main body of the duct unit.

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