A volute assembly, fresh air module and ducted air conditioner

Abstract

A volute assembly, a fresh air module and a ducted air conditioner can reduce the mold cost and production cost of the fresh air volute. The volute assembly comprises a volute body, a first motor, a second motor, a third motor and a fourth motor; the volute body is provided with an air inlet, a fresh air inlet, a fresh air outlet, an exhaust air outlet and a switching port, and the volute body is of an integrated structure; the fresh air inlet is arranged in selective communication with the switching port and the exhaust air outlet, the fresh air inlet, the switching port, the air inlet and the fresh air outlet can be communicated to form a fresh air air duct, and the air inlet, the exhaust air outlet and the fresh air inlet can be communicated to form an exhaust air duct; the first motor is arranged in communication with a fresh air inlet air valve; the second motor is arranged in communication with a switching air valve; the third motor is arranged in communication with an exhaust air outlet air valve; the fourth motor is arranged in communication with a fresh air outlet air valve; the volute body is provided with a first side plate, and the first motor, the second motor, the third motor and the fourth motor are all mounted on the first side plate and located on the side of the first side plate away from the air inlet.

Description

[0001] This application is a divisional application of the application with the application date of October 26, 2023, the application number of 202311409044.5, and the invention name of "A fresh air volute, a fresh air module and a ducted air conditioner". TECHNICAL FIELD

[0002] The present application relates to the technical field of air conditioners, in particular to a volute assembly, a fresh air module and a ducted air conditioner. BACKGROUND

[0003] At present, the volute of the traditional ducted air conditioner with fresh air function is generally assembled by multiple parts such as an upper volute, a lower volute and an air outlet frame. The upper volute and the lower volute are both in a volute structure, and the fresh air inlet, the fresh air outlet and the air duct are formed by splicing. Then, the air outlet frame is installed to form a complete fresh air volute. This way results in high mold cost and high production cost of the fresh air volute. SUMMARY

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

[0005] To this end, the present application provides a volute assembly, comprising: a volute body, a first motor, a second motor, a third motor and a fourth motor; 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 of an integrated structure, and the central axis of the air inlet is arranged along the axial direction of the volute body; the fresh air inlet is arranged to be in selective communication with the switching port and the exhaust outlet, the fresh air inlet, the switching port, the air inlet, the fresh air outlet can be communicated to form a first airflow channel, the first airflow channel is a fresh air duct, and the air inlet, the exhaust outlet and the fresh air inlet can be communicated to form a second airflow channel, the second airflow channel is an exhaust air duct; the first motor is arranged to be connected with a fresh air inlet air valve to drive the fresh air inlet air valve to open or close the fresh air inlet; the second motor is arranged to be connected with a switching air valve to drive the switching air valve to open or close the switching port; the third motor is arranged to be connected with an exhaust air outlet air valve to drive the exhaust air outlet air valve to open or close the exhaust outlet; the fourth motor is arranged to be connected with a fresh air outlet air valve to drive the fresh air outlet air valve to open or close the fresh air outlet; the volute body is provided with a first side plate, and the first motor, the second motor, the third motor and the fourth motor are all mounted on the first side plate and located on the side of the first side plate away from the air inlet.

[0006] The embodiment of the present application also provides a fresh air module, comprising: a shell; and the fresh air volute in any one of the above embodiments, which is arranged in the shell and connected with the shell.

[0007] The embodiment of the present application also provides a ducted air conditioner, comprising: a ducted air conditioner body; and the fresh air module in any one of the above embodiments, which is connected with the ducted air conditioner body.

[0008] The volute assembly, the fresh air module and the ducted air conditioner provided by the embodiment of the present application have the following advantages: the volute body is of an integrated structure, and is provided with an air inlet, an air wheel mounting cavity, a fresh air inlet, a fresh air outlet and an exhaust air outlet, and the cover plate is connected with one axial end of the volute body to enclose an air duct with the volute body. Therefore, the volute structure only needs to be arranged on the volute body, and the cover plate does not need to be arranged in a volute structure, and the cover plate can even be formed without a mold, thereby being beneficial to simplifying the mold structure of the fresh air volute, thereby being beneficial to reducing the mold cost and the production cost of the fresh air volute.

[0009] In addition, the fresh air volute is not only provided with a fresh air duct, but also provided with an exhaust air duct, the fresh air duct can be used to discharge outdoor fresh air into an indoor space, and the exhaust air duct can be used to discharge indoor dirty air to an outdoor space, thereby being beneficial to enriching the functions of the fresh air module, so that the fresh air module has a fresh air mode and an exhaust air mode, and both the fresh air mode and the exhaust air mode are beneficial to improving the indoor air quality. In this way, when the outdoor air quality is good, the indoor air quality can be improved through the fresh air mode, and when the outdoor air quality is poor, the indoor air quality can be improved through the exhaust air mode, thereby being beneficial to improving the use experience of the ducted air conditioner.

[0010] In addition, the first motor, the second motor, the third motor and the fourth motor are installed in the same region and are all installed on the first side plate, so that only a detachable air outlet baffle needs to be arranged on the opposite side of the first side plate, the four motors in the region can be overhauled without detaching the entire fresh air module, thereby being beneficial to reducing the overhauling difficulty of the fresh air module, and further being beneficial to reducing the overhauling cost of the fresh air module. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The three-dimensional structural schematic diagram of the ducted air conditioner provided by some embodiments of the present application is shown in the figure;

[0012] Figure 2 The exploded structural schematic diagram of the fresh air module provided by some embodiments of the present application is shown in the figure;

[0013] Figure 3 The partial exploded view of the fresh air module shown in the figure is shown in the figure; Figure 2

[0014] Figure 4 The partial exploded view of the fresh air module shown in the figure is shown in the figure; Figure 2 ​The main view structure schematic diagram of the fresh air module after assembly is shown in the figure.

[0015] Figure 5 For Figure 4 The A-A sectional view structure schematic diagram of the fresh air module in the first state (fresh air mode) is shown in the figure.

[0016] Figure 6 For Figure 4 The A-A sectional view structure schematic diagram of the fresh air module in the second state (exhaust mode) is shown in the figure.

[0017] Figure 7 For Figure 4 The B-B sectional view structure schematic diagram of the fresh air module is shown in the figure.

[0018] Figure 8 For Figure 2 The local three-dimensional structure schematic diagram of the fresh air module after assembly in the first state (fresh air mode) is shown in the figure.

[0019] Figure 9 For Figure 2 The local three-dimensional structure schematic diagram of the fresh air module after assembly in the second state (exhaust mode) is shown in the figure.

[0020] Figure 10 For Figure 2 The local top view structure schematic diagram of the fresh air module after assembly is shown in the figure.

[0021] Figure 11 For Figure 10 The C-C sectional view structure schematic diagram of the fresh air module in the first state (fresh air mode) is shown in the figure.

[0022] Figure 12 For Figure 11 The enlarged structure schematic diagram of the D part is shown in the figure.

[0023] Figure 13 For Figure 10 The C-C sectional view structure schematic diagram of the fresh air module in the second state (exhaust mode) is shown in the figure.

[0024] Figure 14 For Figure 2 The local three-dimensional structure schematic diagram of the fresh air module after assembly is shown in the figure.

[0025] Figure 15 For Figure 2 The three-dimensional structure schematic diagram of the volute body is shown in the figure.

[0026] Figure 16 For Figure 15 The three-dimensional structure schematic diagram of the volute body from another perspective is shown in the figure.

[0027] Figure 17 For Figure 15Another perspective view of the volute body is shown in the figure.

[0028] Figure 18 For Figure 15 Another perspective view of the volute body is shown in the figure.

[0029] Figure 19 For Figure 2 A partial perspective view of the fresh air module after assembly is shown in the figure.

[0030] In the drawings, the components represented by each reference numeral are listed as follows:

[0031] 1 volute body, 11 first side plate, 111 fresh air outlet, 112 first mounting portion, 1121 first shaft hole, 113 second mounting portion, 1131 second shaft hole, 114 third mounting portion, 1141 third shaft hole, 115 fourth mounting portion, 1151 fourth shaft hole, 116 first wiring buckle, 12 second side plate, 121 fresh air inlet, 13 third side plate, 14 end plate, 141 air inlet, 142 switching port, 15 air outlet, 16 volute tongue plate, 161 circular arc segment, 162 pressure recovery segment, 163 second support portion, 164 flow guide segment, 171 first reinforcing flange, 1711 third support portion, 1712 fourth support portion, 172 second reinforcing flange, 1721 reinforcing rib, 181 first sealing flange, 182 second sealing flange, 183 third sealing flange, 1831 second wiring buckle, 184 fourth sealing flange, 185 fifth sealing flange, 186 sixth sealing flange, 187 seventh sealing flange;

[0032] 2 cover plate, 21 air guide protrusion;

[0033] 3 shell, 31 top plate, 32 bottom plate, 321 maintenance plate, 3211 air inlet, 322 maintenance gap, 33 shell body, 331 avoidance gap, 332 folded edge, 34 air outlet baffle, 341 air outlet, 35 motor cavity;

[0034] 41 first motor, 42 second motor, 43 third motor, 44 fourth motor;

[0035] 51 fresh air inlet damper, 52 switching damper, 53 air outlet damper, 54 fresh air outlet damper;

[0036] 6 filter screen assembly, 61 fresh air inlet area, 62 air outlet inlet area;

[0037] 7 air pipe joint, 71 first skirt, 72 second skirt, 73 sealing groove, 74 sealing member;

[0038] 8 electric control box;

[0039] 91 air guide ring, 92 air wheel, 93 air wheel motor, 94 motor gland;

[0040] 100 fresh air module, 200 ducted air conditioner main body, 2022 air outlet, 2024 air inlet, 204 electric control module. DETAILED DESCRIPTION

[0041] As Figures 1 to 19 shown, the embodiment of the present application provides a volute assembly, a fresh air module 100 and a ducted air conditioner. The fresh air module 100 can be used in a ducted air conditioner, and can also be used in other types of air treatment equipment.

[0042] As Figure 1 shown, the embodiment of the present application provides a ducted air conditioner, which includes a ducted air conditioner main body 200 and a fresh air module 100. The ducted air conditioner main body 200 can be a ducted indoor unit. The ducted indoor unit can be connected with a ducted outdoor unit. The ducted indoor unit is hidden in the ceiling, and the ducted outdoor unit is installed outdoors. The ducted air conditioner main body 200 can also be an all-in-one machine. The ducted air conditioner main body 200 can include a machine shell and an electric control module 204, and the fresh air module 100 and the electric control module 204 can be arranged on opposite sides of the machine shell, as Figure 1 shown.

[0043] As Figure 2 , Figure 3 , Figure 4 , Figure 10 shown, the fresh air module 100 includes a shell 3 and a fresh air volute. The fresh air module 100 can also include a fan wheel 92, a fan wheel motor 93, a motor gland 94, a wind guide ring 91, a filter screen assembly 6, an air outlet baffle 34, an electric control box 8 and other structures.

[0044] As Figure 1 shown, the ducted air conditioner main body 200 is provided with an air inlet 2024, and the air inlet 2024 of the ducted air conditioner main body 200 is used for the indoor air to enter the ducted air conditioner main body 200. As Figure 1 shown, the ducted air conditioner main body 200 is also provided with an air outlet 2022, and the air outlet 2022 of the ducted air conditioner main body 200 is used for the air in the ducted air conditioner main body 200 to be discharged to the indoor after heat exchange. The ducted air conditioner main body 200 is usually a rectangular parallelepiped, and the air outlet 2022 of the ducted air conditioner main body 200 can be arranged on the front side wall of the ducted air conditioner, and the air inlet 2024 of the ducted air conditioner main body 200 can be arranged on the bottom wall of the ducted air conditioner. Here, the state after the ducted air conditioner is installed after leaving the factory is taken as the reference, that is, after installation, the air inlet 2024 is located on the end wall of the ducted air conditioner which is arranged downward, so the air inlet 2024 is arranged downward. However, during the assembly process before leaving the factory, the air inlet 2024 of the ducted air conditioner can be arranged upward.

[0045] The ducted air conditioner is concealed in the ceiling. The side plate of the ceiling is provided with an air supply port corresponding to the air outlet 2022 of the main body 200 of the ducted air conditioner, and an air supply grille can be arranged at the air supply port. The bottom plate of the ceiling is provided with an air return port corresponding to the air return port 2024 of the main body 200 of the ducted air conditioner, and an air return grille can be arranged at the air return port of the ceiling. Moreover, the air return port of the ceiling is also a maintenance opening (referred to as a second maintenance opening, as shown in Figure 1 FIG. 1) of the ducted air conditioner for maintenance of the ducted air conditioner during use. During maintenance, the air return grille can be disassembled to expose the second maintenance opening, and the main body 200 of the ducted air conditioner can be maintained.

[0046] As shown in Figure 1 , the fresh air module 100 is arranged on one side of the main body 200 in the length direction (i.e., the left-right direction in Figure 1 ) of the ducted air conditioner and is connected to the main body 200 of the ducted air conditioner.

[0047] In this way, the depth of the ducted air conditioner (i.e., the depth of the ducted air conditioner extending horizontally into the side wall of the ceiling) is not increased, and the second maintenance opening can form a narrow and long structure, which is more in line with the current mainstream decoration style.

[0048] In related technologies, the traditional fresh air function ducted air conditioner volute is generally assembled by an upper volute, a lower volute, an air outlet frame and other parts. The upper volute and the lower volute are both in a volute structure, and the fresh air inlet 121, the fresh air outlet 111, the air duct and other structures are surrounded by splicing, and then the air outlet frame is assembled to form a complete fresh air volute. This way results in higher mold cost of the fresh air volute and higher production cost of the entire fresh air volute.

[0049] The embodiment of the present application provides a fresh air volute, which comprises a volute main body 1 and a cover plate 2, as shown in Figure 2 、 Figure 7 、 Figure 11 、 Figure 13 、 Figure 14 .

[0050] As shown in Figures 15 to 18 , the volute main body 1 is provided with an air inlet 141, a fresh air inlet 121, a fresh air outlet 111 and an air outlet 15. The volute main body 1 is in an integrated structure. The central axis of the air inlet 141 is arranged in the axial direction of the volute main body 1.

[0051] As shown in Figure 2 、 Figure 7 、 Figure 11 、 Figure 13 、 Figure 14As shown, the cover plate 2 is located at one axial side of the volute body 1 and is arranged opposite to the air inlet 141. The cover plate 2 is covered on the volute body 1 and encloses the air duct with the volute body 1. The air duct includes a fresh air duct and an exhaust air duct. The fresh air duct includes the airflow passage formed by the fresh air inlet 121, the air inlet 141 and the fresh air outlet 111. The exhaust air duct includes the airflow passage formed by the air inlet 141 and the exhaust air outlet 15.

[0052] The fresh air volute provided by the embodiment of the present application includes the volute body 1 and the cover plate 2. The volute body 1 is of an integrated structure and is provided with the air inlet 141, the air wheel mounting cavity, the fresh air inlet 121, the fresh air outlet 111, the exhaust air outlet 15 and the like, while the cover plate 2 is only connected to one axial end of the volute body 1 and encloses the air duct with the volute body 1. Therefore, the volute structure only needs to be arranged on the volute body 1, and the cover plate 2 does not need to be arranged in a volute structure and can even be formed without a mold, thus being beneficial to simplify the mold structure of the fresh air volute, thereby being beneficial to reduce the mold cost and the production cost of the fresh air volute.

[0053] Further, the fresh air volute is not only provided with the fresh air duct but also provided with the exhaust air duct. The fresh air duct can be used to discharge outdoor fresh air into the indoor space, and the exhaust air duct can be used to discharge indoor dirty air to the outdoor space, thereby being beneficial to enrich the functions of the fresh air module 100, so that the fresh air module 100 has both the fresh air mode and the exhaust air mode, and both the fresh air mode and the exhaust air mode are beneficial to improve the indoor air quality. In this way, when the outdoor air quality is good, the indoor air quality can be improved through the fresh air mode, as shown in Figure 5 、 Figure 8 and Figure 11 As shown, when the outdoor air quality is poor, the indoor air quality can be improved through the exhaust air mode, as shown in Figure 6 、 Figure 9 and Figure 13 , thereby being beneficial to improve the use experience of the ducted air conditioner.

[0054] After the ducted air conditioner is assembled, the air inlet 141 of the fresh air volute is arranged downward to suck indoor dirty air through the return air inlets 2024 on the bottom wall of the ceiling. The cover plate 2 is covered on the top end of the fresh air volute.

[0055] Wherein, "downwardly arranged" and "top end" herein are based on the state of the ducted air conditioner being installed in the ceiling, the direction towards the ground is downward, the direction towards the ceiling is upward, the bottom plate 32 of the fresh air module 100 shell 3 is downward, and the top plate 31 is upward. However, the top and bottom relationship of the bottom plate 32 and the top plate 31 can be changed during the assembly process before the ducted air conditioner is shipped. For example: the air inlet 141 can be arranged upwardly, the top plate 31 of the shell 3 can be the bottom plate, the wind wheel motor 93 can be fixed on the top plate 31, and after the internal structures such as the wind wheel 92, the wind wheel motor 93, and the fresh air volute are installed, the bottom plate 32 of the shell 3 is covered.

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

[0057] In this way, the cover plate 2 can play a sealing and heat preservation role, and the heat preservation sponge between the fresh air volute and the fresh air module 100 shell 3 can be omitted, thereby facilitating further simplification of the structure of the fresh air module 100 and further reducing the production cost. Moreover, this is equivalent to that the fresh air volute adopts an integrated design, thereby reducing the number of components of the fresh air module 100, facilitating improvement of the assembly efficiency of the fresh air module 100, and avoiding the sealing gap between the multiple volute components in the related art, so that the cost of the fresh air volute is more optimal, and the noise sealing performance is better. Of course, the cover plate 2 is not limited to a foam piece.

[0058] In some exemplary embodiments, the exhaust air outlet 15 is arranged to be capable of communicating with the fresh air inlet 121, as shown in Figure 6 , Figure 9 and Figure 13 . The exhaust air duct further comprises an airflow passage formed by the communication between the exhaust air outlet 15 and the fresh air inlet 121.

[0059] In this way, the fresh air inlet 121 is used for both the outdoor fresh air entering the fresh air volute and the indoor dirty air flowing out of the fresh air volute, as shown in Figure 6 , Figure 9 and Figure 13 . In this way, the outdoor fresh air entering the indoor and the indoor dirty air discharging to the outdoor can be realized through one fresh air duct connected by the fresh air inlet 121, so that one exhaust air duct can be omitted, thereby facilitating the simplification of the structure of the ducted air conditioner and the reduction of the cost of the ducted air conditioner.

[0060] In some exemplary embodiments, the volute body 1 is further provided with a switching port 142 capable of communicating with the fresh air inlet 121, as shown in Figure 5 and Figure 6 . The fresh air inlet 121 is arranged to be capable of communicating with the air inlet 141 through the switching port 142; the fresh air inlet 121 is arranged to be capable of communicating with the switching port 142 and the exhaust air outlet 15 alternatively, so as to switch the airflow direction of the fresh air inlet 121.

[0061] In other words, the switching port 142 and the exhaust outlet 15 cooperate to control the airflow direction of the fresh air module 100, so as to switch the fresh air module 100 between the fresh air mode and the exhaust mode. The fresh air mode refers to a working mode in which outdoor fresh air is introduced into the indoor space. The exhaust mode refers to a working mode in which indoor contaminated air is exhausted to the outdoor space.

[0062] The exhaust outlet 15 and the switching port 142 are arranged to selectively communicate with the fresh air inlet 121. In other words, the exhaust outlet 15 and the switching port 142 cannot communicate with the fresh air inlet 121 at the same time, and only one of them can communicate with the fresh air inlet 121 in the same working mode.

[0063] The fresh air inlet 121 is arranged to be able to communicate with the air inlet 141 through the switching port 142. That is, in the fresh air mode, the fresh air inlet 121 communicates with the switching port 142 and is cut off from the exhaust outlet 15, the switching port 142 is located on the downstream side of the fresh air inlet 121 and on the upstream side of the air inlet 141, and the fresh air flows through the fresh air inlet 121, the switching port 142 and the air inlet 141 in sequence. In the exhaust mode, the fresh air inlet 121 communicates with the exhaust outlet 15 and is cut off from the switching port 142, the exhaust outlet 15 is located on the downstream side of the air inlet 141 and on the upstream side of the fresh air inlet 121, and the indoor contaminated air flows through the air inlet 141, the exhaust outlet 15 and the fresh air inlet 121 in sequence.

[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, and the switching between the fresh air mode and the exhaust mode can be realized, which is simple in structure and easy to implement.

[0065] When the switching port 142 is opened and the exhaust outlet 15 is closed, the fresh air inlet 121 can communicate with the switching port 142 and is cut off from the exhaust outlet 15, so that the outdoor fresh air can flow through the fresh air inlet 121, the switching port 142, the air inlet 141 and the fresh air outlet 111 in sequence and enter the indoor space, as shown in Figure 5 , Figure 8 and Figure 11 .

[0066] When the switching port 142 is closed and the exhaust outlet 15 is opened, the fresh air inlet 121 can communicate with the exhaust outlet 15 and is cut off from the switching port 142, so that the indoor contaminated air can flow through the air inlet 141, the exhaust outlet 15 and the fresh air inlet 121 in sequence and be exhausted to the outdoor space, as shown in Figure 6 , Figure 9 and Figure 13 .

[0067] In some exemplary embodiments, the switching port 142 and the air inlet 141 are arranged on the end wall of the volute body 1, and the switching port 142 is located on the radial outer side of the air inlet 141, as shown in Figure 15 .

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

[0069] In this way, the air flow direction in the fresh air volute can be controlled by switching the opening and closing control of the switch port 142, the exhaust air outlet 15 and the fresh air outlet 111, and thus the working mode switching of the fresh air volute can be controlled. Moreover, the fresh air air duct and the exhaust air air duct can share part of the air flow channel, which is conducive to the miniaturization of the fresh air volute.

[0070] In both the fresh air mode and the exhaust air mode, the air flow enters the air wheel installation cavity along the axial direction through the air inlet 141, and then is discharged along the tangential direction of the air wheel installation cavity, and flows to the fresh air outlet 111 (fresh air mode) or to the exhaust air outlet 15 and the fresh air inlet 121 (exhaust air mode). Therefore, the direction of the air wheel 92 does not need to be changed when switching between the fresh air mode and the exhaust air mode. This is conducive to simplifying the electrical control program of the air wheel motor 93 and simplifying the structure of the blades of the air wheel 92.

[0071] In some exemplary embodiments, the central axis of the fresh air inlet 121 and the central axis of the exhaust air outlet 15 are arranged offset in the axial direction (i.e. the up-down direction) of the volute body 1, as shown in Figure 13 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 air 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 air outlet 15, as shown in Figure 13 .

[0072] In this way, the air duct area near the fresh air inlet 121 can be divided into two layers, one for the flow of fresh air to the air inlet 141 and the other for the flow of dirty air to the outside.

[0073] The cover plate 2 is provided with a wind guide protrusion 21, as shown in Figure 13 The wind guide protrusion 21 is arranged to guide the air flow discharged by the exhaust air outlet 15 to the fresh air inlet 121. The wind guide protrusion 21 can have a circular arc-shaped flow guide surface. The wind guide protrusion 21 can be an integral structure with the cover plate 2.

[0074] The air guide protrusion 21 can guide the dirty air, so that the dirty air flows smoothly to the fresh air inlet 121, which is beneficial to avoid large angle turning of the dirty air flow and cause excessive airflow loss, and is also beneficial to avoid excessive noise, and can also play a heat preservation role on the volute.

[0075] In some example embodiments, the volute body 1 includes a side wall, a volute tongue plate 16 and an end plate 14, as shown in Figure 17 and Figure 18 . The volute tongue plate 16 is arranged on the inner side of the side wall. The end plate 14 is connected with the side wall and the volute tongue plate 16. One end of the volute tongue plate 16 is connected with the side wall, and the other end is arranged spaced apart from the side wall to form an air outlet channel communicating with the air wheel mounting cavity.

[0076] The air inlet 141 and the switching port 142 are arranged on the end plate 14, as shown in Figure 15 . The end plate 14 can not be a completely flat plate structure. For example, the end plate 14 can be partially inclined, and the switching port 142 is arranged on the inclined part of the end plate 14, and the area of the end plate 14 where the air inlet 141 is arranged can be a flat plate structure.

[0077] The fresh air inlet 121 and the fresh air outlet 111 are arranged on the side wall, as shown in Figure 15 and Figure 18 . The exhaust outlet 15 is located between the side wall and the other end of the volute tongue plate 16, as shown in Figure 16 . The circumferential structure of the side wall can be irregular, and can include a circular arc part and a flat part, as shown in Figure 15 and Figure 18 . The specific design can be reasonably designed according to the functional requirements of the volute.

[0078] In some example embodiments, the volute body 1 is provided with a first reinforcing flange 171 at one end (i.e. the upper end) of the cover plate 2, as shown in Figure 17 . The first reinforcing flange 171 is arranged along the circumference of the side wall. The arrangement of the first reinforcing flange 171 is beneficial to improve the structural strength of the volute body 1, thereby improving the use reliability of the fresh air volute, and is also beneficial to realize sealing by abutting the first reinforcing flange 171 with the cover plate 2.

[0079] In some example embodiments, the volute tongue plate 16 is provided with a second reinforcing flange 172 at one end toward the cover plate 2, as shown in Figure 17 . The arrangement of the second reinforcing flange 172 is beneficial to improve the structural strength of the volute body 1, thereby improving the use reliability of the fresh air volute.

[0080] In some example embodiments, the second reinforcing flange 172 is provided with a reinforcing rib 1721, as shown in Figure 17The arrangement of the reinforcing rib 1721 is conducive to further improving the structural strength of the volute body 1, thereby further improving the use reliability of the fresh air volute, and conducive to the abutment of the second reinforcing flange 172 and the cover plate 2 to achieve sealing.

[0081] The second reinforcing flange 172 can be provided with a groove, and the reinforcing rib 1721 is arranged in the groove, and the number of reinforcing ribs 1721 can be multiple, and the multiple reinforcing ribs 1721 are arranged along the length direction of the second reinforcing flange 172, as shown in Figure 17 , which is conducive to effectively improving the structural strength of the volute body 1.

[0082] In some exemplary embodiments, the volute tongue plate 16 includes a circular arc segment 161 and a diffuser segment 162 connected to the circular arc segment 161, as shown in Figure 16 . The length of the diffuser segment 162 can be, but is not limited to, greater than 10 mm. The circular arc segment 161 and a part of the side wall plate form a wind wheel mounting cavity. The diffuser segment 162 and a part of the side wall plate form a diffuser flow channel. The volute tongue plate 16 can also include a guide segment 164 extending to the fresh air inlet 121, as shown in Figure 17 , which is conducive to guiding the dirty air to the fresh air inlet 121 and further improving the flow smoothness of the dirty air.

[0083] In some exemplary embodiments, the side wall plate includes a first side plate 11, a second side plate 12 and a third side plate 13 connected in sequence, as shown in Figure 18 . One end of the third side plate 13 is flush with the end plate 14 (as shown in Figure 15 and Figure 18 ), and the other end is flush with the first side plate 11 and the second side plate 12 (as shown in Figure 16 and Figure 17 ). 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 in Figure 15 and Figure 18 . In other words, the height of the first side plate 11 and the second side plate 12 is higher, and the height of 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 air duct. The first side plate 11 and the second side plate 12 are mainly used to cooperate to form a fresh air duct and an exhaust air duct and other regions.

[0084] As shown in Figure 18 , the fresh air outlet 111 is arranged on the first side plate 11, and the fresh air inlet 121 is arranged on the second side plate 12, so the first side plate 11 is located at the front end of the fresh air volute and extends in the left-right direction to discharge fresh air forward. The second side plate 12 extends in the front-rear direction and is located on the left or right side of the first side plate 11, and the length can be relatively small, but it is sufficient to arrange the fresh air inlet 121 and to be sufficient to be connected with the air pipe joint 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 shaft of the fresh air inlet valve 51 away from 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., in front 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 arranged to mount the shaft end of the fresh air outlet damper 54 connected to the fourth motor 44, so that the fourth motor 44 can be mounted on the front side of the first side plate 11. The side of the first side plate 11 close to the air inlet 141 is provided with a fourth support portion 1712, as shown in Figure 16 As shown, the fourth support portion 1712 is arranged to support the shaft end of the fresh air outlet damper 54 away from the fourth motor 44, so that the fourth motor 44 can drive the fresh air outlet damper 54 located on the rear side of the first side plate 11 to rotate.

[0102] The part of the first sealing flange 181 located on the upper end can coincide with the part of the first reinforcing flange 171 located on the upper end. The third support portion 1711 and the fourth support portion 1712 can be arranged at the part where the first sealing flange 181 coincides with the first reinforcing flange 171.

[0103] In this way, the structural layout of the volute body 1 is reasonable, which facilitates the installation of the fresh air inlet damper 51, the switching damper 52, the exhaust air outlet damper 53, and the fresh air outlet damper 54, and the installation of the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44. It is also convenient for the connection of the fresh air inlet damper 51 and the first motor 41, the connection of the switching damper 52 and the second motor 42, the connection of the exhaust air outlet damper 53 and the third motor 43, and the connection of the fresh air outlet damper 54 and the fourth motor 44.

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

[0105] In this way, the wire bodies of the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44 can be routed along the wire routing buckles on the first side plate 11 and the second side plate 12, as shown in Figure 19 As shown, this is conducive to optimizing the layout of the wires and preventing interference with structures such as the fan 92.

[0106] ​And, the distance between the first wiring buckle 116 and the bottom plate 32 cover plate 2 of the fresh air module 100 is less than the distance between the first wiring buckle 116 and the top plate 31 of the fresh air module 100. The distance between the second wiring buckle 1831 and the bottom plate 32 cover plate 2 of the fresh air module 100 is less than the distance between the second wiring buckle 1831 and the top plate 31 of the fresh air module 100. In other words, the first wiring buckle 116 is arranged at the lower part of the first side plate 11, such as can be arranged on the first sealing flange 181 at the lower end of the first side plate 11, and the second wiring buckle 1831 is arranged at the lower end of the second side plate 12. In this way, after the ducted air conditioner is installed in the ceiling, the positions of the first wire body, the second wire body, the third wire body and the fourth wire body are relatively low, which is convenient for maintenance personnel to maintain. Figure 19 The dashed line in the figure shows the direction of the first wire body, the second wire body, the third wire body and the fourth wire body.

[0107] The first wiring buckle 116 and the second wiring buckle 1831 can be, but are not limited to, buckles, winding columns, etc.

[0108] In some exemplary embodiments, the volute body 1 is provided with a fourth sealing flange 184, as shown in Figure 18 The fourth sealing flange 184 is arranged along the circumference of the fresh air inlet 121 and is arranged in abutment with 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 be separated from the fourth sealing flange 184 to 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 to close the fresh air inlet 121 and achieve sealing, which is beneficial to prevent outdoor cold air from flowing into the fresh air volute through the fresh air inlet 121 in severe cold weather, causing condensation or even icing in the fresh air volute and affecting the parts in the fresh air volute.

[0110] In some exemplary embodiments, the volute body 1 is provided with a fifth sealing flange 185, as shown in Figure 18 The fifth sealing flange 185 is arranged outside the fresh air inlet 121 and along the circumference of the fresh air inlet 121, and is arranged in abutment with the sealing element 74 sleeved between the duct connector 7 and the volute body 1, as shown in Figure 12

[0111] In this way, by cooperating the fifth sealing flange 185 with the sealing element 74, the sealing connection between the volute body 1 and the duct connector 7 can be achieved, which is beneficial to prevent air leakage at the volute body 1 and the duct connector 7.

[0112] In some exemplary embodiments, the fresh air module 100 further comprises a duct connector 7, as shown in Figure 12 ​The air duct joint 7 is used to connect the fresh air duct, which is connected with the outdoor space, to transport outdoor fresh air into the fresh air module 100, and then output the fresh air to the indoor space through the air outlet 341 and the fresh air outlet 111. The air duct joint 7 is connected with the volute body 1 and is in communication with the fresh air inlet 121, and the end of the air duct joint 7 towards the volute body 1 is provided with a nested first skirt 71 and a second skirt 72, as shown in Figure 12 The first skirt 71 and the second skirt 72 form a sealing groove 73 therebetween, and a sealing sponge (i.e. a sealing piece 74) is arranged in 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 is conducive to improving the connection reliability of the air 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, as shown in Figure 17 The sixth sealing flange 186 is arranged along the circumference of the exhaust air outlet 15 and is arranged to abut against the exhaust air outlet damper 53, so that the exhaust air outlet damper 53 can close the exhaust air outlet 15.

[0114] In this way, when the exhaust air outlet 15 needs to work, the exhaust air outlet damper 53 can be separated from the sixth sealing flange 186 to open the exhaust air outlet 15. When the exhaust air outlet 15 does not need to work, the exhaust air outlet damper 53 abuts against the sixth sealing flange 186 to close the exhaust air inlet 3211 outlet and achieve sealing, which is conducive to improving the reliability of the exhaust air outlet 15 closing.

[0115] The sixth sealing flange 186 can include three flanges, as shown in Figure 17 The cover plate 2 can also be provided with a flange, and the flange on the cover plate 2 and the three flanges form a quadrilateral structure to abut against the exhaust air outlet damper 53 to achieve sealing.

[0116] In some exemplary embodiments, the volute body 1 is provided with a seventh sealing flange 187, as shown in Figure 15 The seventh sealing flange 187 is arranged along the circumference of the fresh air outlet 111 and is arranged to be inserted and sealingly matched with the air outlet 341 on the air outlet baffle 34 of the fresh air module 100, as shown in Figure 3 Figure 7

[0117] In this way, the seventh sealing flange 187 can be sealingly matched with the wall of the air outlet 341 of the air outlet baffle 34, as shown in Figure 7 ​​As shown, the indoor cold air is prevented 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 referred to as the motor cavity 35) through the gap between the seventh sealing flange 187 and the air outlet baffle 34, thereby preventing the condensation or even icing in the motor cavity 35 from adversely affecting the first motor 41, the second motor 42, the third motor 43 and the fourth motor 44.

[0118] As shown, Figures 2 to 14 the application also provides a fresh air module 100, which comprises a shell 3 and the fresh air volute according to any one of the above embodiments. The fresh air volute is arranged in the shell 3 and connected with the shell 3.

[0119] The fresh air module 100 provided by the application has all the beneficial effects of the fresh air volute according to any one of the above embodiments, and thus will not be described here.

[0120] In some exemplary embodiments, the shell 3 comprises a top plate 31, a bottom plate 32 and a shell body 33, as shown. Figure 3 The bottom plate 32 is arranged opposite to the top plate 31, and the shell body 33 is located between the top plate 31 and the bottom plate 32 and connected with 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 clamping the volute body 1 and the top plate 31, as shown. Figure 7 Among them, the top plate 31 and the bottom plate 32 here are based on the state of the ducted air conditioner being installed in the ceiling, with the top plate 31 on top and the bottom plate 32 on bottom. However, the top-bottom relationship between the bottom plate 32 and the top plate 31 can be changed during the assembly process before the ducted air conditioner is shipped. For example, the bottom plate 32 can be arranged on top, and the top plate 31 can be the bottom plate. The fan motor 93 can be fixed to the top plate 31, and after the fan 92, the fan motor 93 and the fresh air volute and other internal structures are installed, the bottom plate 32 is covered.

[0121] The bottom plate 32 comprises a detachable inspection plate 321, as shown. Figure 1 and Figure 2 The bottom plate 32 is provided with an inspection gap 322, as shown. Figure 3 The inspection plate 321 is arranged opposite to at least a part of the air inlet 141.

[0122] When installing the ducted air conditioner, the return air inlet on the ceiling bottom plate 32 can be lengthened, so that the access panel 321 of the fresh air module 100 is located in the area of the supply air inlet. In this way, the return air inlet of the ceiling can form a narrow structure, which is more in line with the current mainstream decoration style. Moreover, by removing the return air grille and the access panel 321, at least part of the fan wheel 92 and the fan motor 93 can be seen, which facilitates the maintenance of the fan wheel 92 and the fan motor 93, thereby facilitating the further reduction of the maintenance difficulty of the fresh air module 100 and the further reduction of the maintenance cost of the fresh air module 100.

[0123] The top plate 31, the bottom plate 32, and the shell body 33 are only divided from the relative position, and the shell 3 specifically includes several components without limitation. For example, as shown in Figure 2 , the top plate 31 can form an integrated structure with the left side plate (or the right side plate) of the shell body 33, and a part of the bottom plate 32 can form an integrated structure with the front side plate of the shell body 33. The right side plate (or the left side plate) of the shell body 33 forms an integrated structure with the rear side plate. The remaining part of the bottom plate 32 can also be split into an access panel 321 and other baffles. The width of the access panel 321 can be roughly equivalent to the width of the return air inlet. The width of the part of the bottom plate 32 integrated with the front side plate can be roughly equivalent to the width of the motor cavity 35.

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

[0125] The shell body 33 includes a front side plate between the fresh air volute and the air outlet baffle 34. The front side plate is provided with an avoidance gap 331, as shown in Figure 3 . The avoidance gap 331 is arranged to avoid the seventh sealing flange 187 of the volute body 1, the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44. The fresh air module 100 further includes an air outlet baffle 34 detachably connected with the shell 3. The air outlet baffle 34 is arranged to shield the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44, so as to avoid the exposure of the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44, which is conducive to improving the aesthetics of the fresh air module 100 and protecting the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44. The air outlet baffle 34 is provided with an air outlet 341 matched with the seventh sealing flange 187 of the volute body 1, as shown in 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 to generate condensation.

[0126] When any one of the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44 needs to be repaired, the air supply grille and the air outlet baffle 34 can be disassembled, so that the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44 can be seen, and thus the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44 can be repaired through the air supply opening of the ceiling without disassembling the fresh air module 100 as a whole. Therefore, at least for the repair of the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44 of the fresh air module 100, the fresh air module 100 does not need to be disassembled as a whole, thereby reducing the repair difficulty of the fresh air module 100 and reducing the maintenance cost.

[0127] The avoidance gap 331 can be a complete gap or can include a plurality of dispersed gaps, and the shape and size of the avoidance gap 331 are not limited as long as the components that need to be repaired (to meet the repair requirements of these components that need to be repaired) and the fresh air outlet 111 (to ensure that the fresh air outlet 111 can correspondingly communicate with the air outlet 341) can be exposed.

[0128] In some exemplary embodiments, the repair plate 321 is provided with an air exhaust inlet 3211, such as Figure 2 As shown, the air exhaust inlet 3211 communicates with the air inlet 141. Since the repair plate 321 is located in the range of the ceiling-mounted return air inlet, indoor dirty air can be easily sucked in through the same return air inlet of the ceiling, so that the ceiling does not need to be additionally provided with an opening corresponding to the air exhaust inlet 3211, which is conducive to reducing the installation difficulty of the ducted air conditioner, and makes the setting mode of the ceiling consistent with that of the conventional ducted air conditioner, only the length of the air supply opening and the return air inlet needs to be appropriately extended, and the mainstream trend of modern decoration is not violated.

[0129] In some exemplary embodiments, the fresh air module 100 further comprises a fifth opening and closing assembly (not shown in the figure). The fifth opening and closing assembly is arranged on the repair plate 321 and is used to control the opening and closing of the air exhaust inlet 3211. The fifth opening and closing assembly comprises a fifth motor and an air exhaust inlet air valve. The fifth motor is connected with the air exhaust inlet air valve and is arranged to drive the air exhaust inlet air valve to open or close the air exhaust inlet 3211. In this way, when the fifth motor needs to be repaired, the return air grille and the repair plate 321 can be disassembled, so that the fifth motor can be repaired without disassembling the entire fresh air module 100, thereby further reducing the repair difficulty of the fresh air module 100 and further reducing the repair cost of the fresh air module 100.

[0130] In some example embodiments, the rotation shaft of the fresh air inlet damper 51 is located at one end of the fresh air inlet damper 51 and can rotate the fresh air inlet damper 51 to the opening position (as shown in FIG. 6) from the closing position (as shown in FIG. 5) in the direction close to the bottom plate 32 (i.e. downward rotation). Figure 11 The rotation shaft of the switching damper 52 is located at one end of the switching damper 52 and can rotate the switching damper 52 to the closing position (as shown in FIG. 7) from the opening position (as shown in FIG. 6) in the direction close to the bottom plate 32 (i.e. downward rotation). Figure 11 Figure 13 The rotation shaft of the switching damper 52 is located at one end of the switching damper 52 and can rotate the switching damper 52 to the closing position (as shown in FIG. 7) from the opening position (as shown in FIG. 6) in the direction close to the bottom plate 32 (i.e. downward rotation).

[0131] In this way, in the exhaust state, the fresh air inlet damper 51 is rotated downward to open the fresh air inlet 121, and the switching damper 52 is rotated downward to close the switching port 142. In this way, the motor force, the self-gravity, and the pressure of the exhaust airflow all generate downward rotation force on the fresh air inlet damper 51 and the switching damper 52, which is beneficial to avoid the fresh air inlet damper 51 from shaking due to the inconsistency of the above three forces, and is also beneficial to the switching damper 52 to be more tightly closed, thereby improving the reliability of closing the switching port 142.

[0132] In some example embodiments, based on the fresh air inlet damper 51 being in the opening position, the angle β (as shown in FIG. 8) between the fresh air inlet damper 51 and the first direction can be in the range of but not limited to 30° to 90°, such as 30°, 45°, 60°, 75°, 90°, etc. Based on the fresh air inlet damper 51 being in the closing position, the angle between the fresh air inlet damper 51 and the first direction can be 180°. The first direction is the direction along the axial direction of the volute body 1 and directed from the top plate 31 to the bottom plate 32, i.e. the direction of gravity. Figure 13 In this way, it is beneficial to improve the stability of the position of the fresh air inlet damper 51 in the exhaust state, and the rotation range of the fresh air inlet damper 51 is not too large, so that the pipe diameter of the air pipe joint 7 is not too large.

[0133] In some example embodiments, based on the switching damper 52 being in the closing position, the angle α (as shown in FIG. 9) between the switching damper 52 and the first direction can be in the range of but not limited to 30° to 90°, such as 30°, 45°, 60°, 75°, 90°, etc. Based on the switching damper 52 being in the opening position, the angle between the switching damper 52 and the first direction can be greater than 90° and less than 180°. The first direction is the direction along the axial direction of the volute body 1 and directed from the top plate 31 to the bottom plate 32, i.e. the direction of gravity.

[0134] Figure 13 In this way, it is beneficial to improve the stability of the position of the switching damper 52 in the exhaust state, and the rotation range of the switching damper 52 is not too large, so that it is beneficial to the miniaturization of the air suction volute.

[0135] In this way, it is beneficial to improve the stability of the position of the fresh air inlet damper 51 in the exhaust state, and the rotation range of the fresh air inlet damper 51 is not too large, so that the pipe diameter of the air pipe joint 7 is not too large. ​​

[0136] In some example embodiments, the switching air valve 52 is controlled in linkage with the exhaust air-out air valve 53.

[0137] Since the fresh air inlet 121 is in communication with the exhaust air outlet 15 and the switching port 142 alternatively, the opening and closing of the two are related. When the exhaust air outlet 15 is opened, the switching port 142 must be closed, corresponding to the exhaust mode. When the switching port 142 is opened, the exhaust air outlet 15 must be closed, corresponding to the fresh air mode. Therefore, the switching air valve 52 and the exhaust air-out air valve 53 can be controlled in linkage to simplify the electrical control program and electrical control structure of the fresh air module 100.

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

[0139] In some example embodiments, the fresh air module 100 further comprises a filter screen assembly 6, as shown in Figure 2 The filter screen assembly 6 is erected between the bottom plate 32 and the volute body 1 and located between the switching port 142 and the air inlet port 141. Moreover, the filter screen assembly 6 cooperates with the volute body 1 and the shell 3 to divide the space between the bottom plate 32 and the volute body 1 into a fresh air inlet area 61 and an exhaust air inlet area 62 located on the two sides of the filter screen assembly 6, respectively, as shown in Figure 8 、 Figure 9 and Figure 19 .

[0140] In this way, the fresh air inlet area 61 and the exhaust air inlet area 62 can be separated by the filter screen assembly 6, which is conducive to avoiding the dirty air passing through the filter screen assembly 6 and also conducive to avoiding the dirty air overflowing to the fresh air inlet area 61, thereby improving the airflow efficiency.

[0141] As shown in Figure 1 The application also provides a ducted air conditioner, comprising: a ducted air conditioner body 200; and the fresh air module 100 according to any one of the above embodiments, connected to the ducted air conditioner body 200.

[0142] The ducted air conditioner provided by the application has all the beneficial effects of the above-mentioned embodiments because it includes the fresh air module 100 according to any one of the above embodiments, and thus the details are not repeated here.

[0143] In summary, the fresh air volute, the fresh air module 100 and the ducted air conditioner provided by the application have the following characteristics:

[0144] The volute body 1 is compatible with the opening, closing and switching of the fresh air inlet air valve 51, switching air valve 52, exhaust air outlet air valve 53 and fresh air outlet air valve 54; the other part of the volute (i.e. the cover plate 2) is replaced by a foam piece, which is fixed on the bottom plate (i.e. the top plate 31) of the shell 3, and the wind wheel motor 93 is fixed on the bottom plate of the shell 3, which is fixed by the motor gland 94.

[0145] The other part of the volute (i.e. the cover plate 2) is replaced by a foam, which can save cost and mold cost on the one hand, and can remove the heat preservation sponge of the bottom plate on the other hand, and has the function of heat preservation at the same time. In addition, the integrated design of the volute avoids the sealing gap between the mutual cooperation, so that the cost is more, and the noise sealing performance is better.

[0146] The fresh air module 100 mainly includes: a shell 3 (including: a front lower side plate substantially in the shape of L, a right rear side plate substantially in the shape of L, a left upper side plate substantially in the shape of L (including a top plate 31), a bottom cover, an inspection plate 321), a fresh air volute (including a cover plate 2 and a volute body 1), a wind guide ring 91, a filter screen assembly 6, an air outlet baffle 34 (which can have a flange to form an air outlet flange), an air pipe joint 7 and an electric control box 8. Among them, the air outlet flange is fixed on the front side plate (i.e. the front side plate of the front lower side plate), and the air pipe joint 7 is fixed on the right rear side plate. The foam cover plate 2 is fixed on the top plate 31, which forms an air duct with the volute body 1 on the one hand, and plays a heat preservation role on the top plate 31 on the other hand.

[0147] The fresh air inlet area 61 and the exhaust air inlet area 62 are located on the lower side (inlet side) of the fresh air volute, and are isolated by the first sealing flange 181, the second sealing flange 182, the third sealing flange 183 of the volute body 1 and the HEAPA net (i.e. the filter screen assembly 6). Among them, the fresh air inlet area 61 is mainly composed of the first side plate 11, the second side plate 12, the end plate 14, the HEAPA net, 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 area are located on the upper side (outlet side) of the volute body 1. When the fresh air outlet air valve 54 and the switching air valve 52 are opened, the exhaust air outlet air valve 53 is rotated to the flange (i.e. the sixth sealing flange 186) of the volute tongue pressure expansion section 162, and the exhaust air outlet 15 is closed, which is the fresh air outlet state; on the contrary, when the fresh air outlet air valve 54 and the switching air valve 52 are closed, the exhaust air outlet air valve 53 is opened, which is the exhaust air outlet state.

[0149] In the exhaust state, the switching damper 52 is closed, the fresh air inlet damper 51 is opened, and the angle between the switching damper 52 and the fresh air inlet damper 51 and the direction of gravity is 30°-90°. Under the combined action of the motor closing force, the damper plate gravity, and the wind pressure direction, the switching damper 52 is closed more tightly, and the fresh air inlet damper 51 avoids shaking due to the difference in the direction of the force. In addition, in order to ensure smooth exhaust, a wind guide protrusion 21 is arranged on the foam cover plate 2, which can guide the wind and also play a heat preservation role for the volute.

[0150] In the fresh air state, the exhaust air outlet damper 53 closes the exhaust air outlet 15, and the switching damper 52 opens the switching port 142. In addition, the rotation angle of the two dampers can be set to be within 20°. When the two dampers work, the motor is linked and controlled, and the same terminal can be used to control the opening and closing of the two dampers.

[0151] The fourth sealing flange 184 and the fifth sealing flange 185 are arranged on the first side plate 11 of the volute body 1. The purpose of the fresh air inlet damper 51 is to prevent cold air from flowing back into the fresh air module 100, causing internal condensation or even icing. The damper motor (i.e., the first motor 41) is fixed to the fresh air outlet side (i.e., the front plate surface of the first side plate 11). The fresh air inlet damper 51 is in abutment with the fourth sealing flange 184 for sealing. The fifth sealing flange 185 is in abutment with the sponge of the air pipe joint 7. The fifth sealing flange 185 is arranged between the first skirt 71 and the second skirt 72 of the air pipe joint 7 to form a seal.

[0152] The flange (i.e., the first sealing flange 181) is arranged around the first side plate 11 of the volute body 1, which increases the strength of the volute and forms a sealed cavity (i.e., the motor cavity 35) with the shell body 33, the bottom plate 32, and the top plate 31 of the shell 3, effectively preventing the motor in this area from condensing. The rotation axis of the fresh air outlet damper 54 and the exhaust air outlet damper 53 extends in the vertical direction, and the third motor 43 and the fourth motor 44 are fixed on the motor cover, which is further fixed on the first side plate 11 of the volute body 1. The first wiring buckle 116 is arranged 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). The flange (i.e., the third sealing flange 183) is also arranged on the surface of the volute parallel to the width direction of the shell (i.e., the second side plate 12), which is used for sealing with the bottom plate 32 and has the second wiring buckle 1831 for motor wire wiring.

[0153] The seventh sealing flange 187 is arranged around the fresh air outlet 111 and protrudes from the corresponding air outlet 341 of the air outlet baffle 34 to effectively prevent condensation.

[0154] The upper end of the volute body 1 is provided with a whole circumference flange (i.e. the first reinforcing flange 171), which ensures 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 the back of the flange can be provided with a reinforcing rib 1721.

[0155] At the exhaust outlet 15, three flanges (i.e. the sixth sealing flange 186) are provided on the volute body 1, which are used for sealing with the exhaust air outlet damper 53. In addition, the sealing surface on the other side is provided on the foam cover plate 2, so that the four sides of the exhaust air outlet damper 53 can abut against the sealing flange to ensure the reliability of closing the exhaust outlet 15.

[0156] The volute air outlet direction is provided with a large flange surface (i.e. the first side plate 11). The shaft end one (i.e. the end of the rotating shaft connected to the fourth motor 44) of the fresh air outlet damper 54 is arranged on the first side plate 11, and the shaft end two (i.e. the end of the rotating shaft away from the fourth motor 44) is arranged on the upper side flange of the volute (i.e. the first reinforcing flange at the upper end). The shaft end one (i.e. the end of the rotating shaft connected to the second motor 42) of the switching damper 52 is arranged on the first side plate 11, and the shaft end two (i.e. the end of the rotating shaft away from the second motor 42) is arranged on the end wall of the volute tongue plate 16 or the volute contour 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 fixed with the air guide ring 91 and a flange for reinforcing and positioning, and a wiring buckle for communication and power supply connection between the fresh air module 100 and the ducted air conditioner main body 200.

[0158] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0159] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0160] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixed", and similar terms should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0161] In this application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0162] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the specification without contradiction.

[0163] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A volute assembly, characterized by, The volute body is provided with an air inlet, a fresh air inlet, a fresh air outlet, an exhaust air outlet and a switching port, and the volute body is of an integrated structure, and the central axis of the air inlet is arranged along the axial direction of the volute body; the fresh air inlet is arranged to be in selective communication with the switching port and the exhaust air outlet, and the fresh air inlet, the switching port, the air inlet, the fresh air outlet can be communicated to form a first airflow channel, and the first airflow channel is a fresh air duct; the air inlet, the exhaust air outlet and the fresh air inlet can be communicated to form a second airflow channel, and the second airflow channel is an exhaust air duct; The first motor is arranged in connection with the fresh air inlet air valve to drive the fresh air inlet air valve to open or close the fresh air inlet; The second motor is arranged in connection with the switching air valve to drive the switching air valve to open or close the switching port; The third motor is arranged in connection with the exhaust air outlet air valve to drive the exhaust air outlet air valve to open or close the exhaust air outlet; The fourth motor is arranged in connection with the fresh air outlet air valve to drive the fresh air outlet air valve to open or close the fresh air outlet; The volute body is provided with a first side plate, and the first motor, the second motor, the third motor and the fourth motor are all mounted on the first side plate and located on the side of the first side plate away from the air inlet.

2. The volute assembly of claim 1, wherein The fresh air outlet is arranged on the first side plate.

3. The volute assembly of claim 2, wherein, The volute body comprises a side wall plate, a volute tongue plate arranged on the inner side of the side wall plate, and an end plate connected with the side wall plate and the volute tongue plate; one end of the volute tongue plate is connected with the side wall plate, and the other end is arranged in space with the side wall plate; the side wall plate comprises the first side plate; The air inlet and the switching port are arranged on the end plate, the fresh air inlet is arranged on the side wall plate, and the exhaust air outlet is located between the side wall plate and the other end of the volute tongue plate.

4. The volute assembly of claim 3, wherein, Part of the end plate is arranged in an inclined manner, and the switching port is arranged on the part of the end plate arranged in an inclined manner.

5. The volute assembly of claim 3, wherein The side wall plate comprises the first side plate, a second side plate and a third side plate connected in sequence; one end of the third side plate is flush with the end plate, and the other end is flush with the first side plate and the second side plate; along the axial direction of the volute body, the height of the first side plate and the second side plate is greater than the height of the third side plate; the fresh air inlet is arranged on the second side plate; The first side plate is located at the front end of the volute body and extends in the left-right direction; the second side plate is located on the left side or the right side of the first side plate and extends in the front-rear direction; the third side plate is arranged to cooperate with the volute tongue plate to form a volute-shaped air duct.

6. The volute assembly of claim 5, wherein, The surface of the first side plate away from the air inlet is provided with a first wiring buckle, one end of the second side plate is provided with a third sealing flange, the third sealing flange is arranged to abut against the shell of the fresh air module, and the third sealing flange is provided with a second wiring buckle; The first wiring buckle is arranged on the lower part of the first side plate, and the second wiring buckle is arranged on the lower end of the second side plate.

7. The volute assembly of claim 5, wherein The first side plate is provided with a first shaft hole, a second shaft hole, a third shaft hole and a fourth shaft hole; the third shaft hole and the fourth shaft hole extend along the axial direction of the volute body, and the first shaft hole and the second shaft hole extend through the first side plate along the thickness direction of the first side plate; One end of the first shaft hole is located on the side of the first side plate away from the air inlet, and is arranged to mount the shaft end of the fresh air inlet damper connected to the first motor; the second side plate is provided with a first support portion arranged to support the shaft end of the fresh air inlet damper away from the first motor; One end of the second shaft hole is located on the side of the first side plate away from the air inlet, and is arranged to mount the shaft end of the switching damper connected to the second motor; the volute tongue plate is provided with a second support portion arranged to support the shaft end of the switching damper away from the second motor; One end of the third shaft hole is located on the side of the first side plate away from the air inlet, and is arranged to mount the shaft end of the exhaust air outlet damper connected to the third motor; the side of the first side plate close to the air inlet is provided with a third support portion arranged to support the shaft end of the exhaust air outlet damper away from the third motor; One end of the fourth shaft hole is located on the side of the first side plate away from the air inlet, and is arranged to mount the shaft end of the fresh air outlet damper connected to the fourth motor; the side of the first side plate close to the air inlet is provided with a fourth support portion arranged to support the shaft end of the fresh air outlet damper away from the fourth motor.

8. The volute assembly of claim 7, wherein, The circumferential edge of the first side plate is provided with a first sealing flange arranged to abut against the shell of the fresh air module; the lower end of the volute body is provided with a first reinforcing flange arranged along the circumferential direction of the side wall plate; The part of the first sealing flange located at the upper end coincides with the part of the first reinforcing flange located at the upper end, and the third support portion and the fourth support portion are arranged at the part of the first sealing flange coinciding with the first reinforcing flange.

9. A fresh air module, characterized in that Comprise: A shell; The volute assembly according to any one of claims 1 to 8 is arranged in the shell and connected to the shell.

10. Fresh air module according to claim 9, characterized in that The shell comprises a top plate, a bottom plate arranged opposite to the top plate, and a shell body between the top plate and the bottom plate; the bottom plate comprises a detachable inspection plate provided with an exhaust inlet, and the exhaust inlet is in communication with the air inlet; The fresh air module further comprises an exhaust inlet damper and a fifth motor arranged on the inspection plate, and the fifth motor is connected to the exhaust inlet damper and arranged to drive the exhaust inlet damper to open or close the exhaust inlet.

11. Fresh air module according to claim 9, characterized in that The volute body is provided with a seventh sealing flange, which is arranged along the circumference of the fresh air outlet; the shell body includes a top plate, a bottom plate arranged opposite to the top plate, and a shell body between the top plate and the bottom plate; the shell body includes a front side plate, which is provided with an avoiding notch arranged to avoid the seventh sealing flange, the first motor, the second motor, the third motor and the fourth motor; The fresh air module further includes an air outlet baffle detachably connected with the shell body, which is arranged to shield the first motor, the second motor, the third motor and the fourth motor; The air outlet baffle is provided with an air outlet matched with the seventh sealing flange, which is inserted and sealed with the air outlet.

12. A ducted fan machine characterised in that, Comprise: A ducted air conditioner main body; And The fresh air module according to any one of claims 9 to 11, connected with the ducted air conditioner main body.

13. The ducted fan machine of claim 12, wherein, The fresh air module is located on one side of the ducted air conditioner main body in the length direction and connected with the ducted air conditioner main body; the ducted air conditioner main body is provided with an air return port; The bottom plate of the shell body of the fresh air module is provided with an inspection notch, and an inspection plate cover of the bottom plate is arranged at the inspection notch, and the inspection plate is arranged opposite to at least a part of the air inlet; The air return port of the ducted air conditioner main body and the inspection notch are arranged to correspond to a second inspection opening of a suspended ceiling.

14. The ducted fan machine of claim 13, wherein, The ducted air conditioner main body includes a shell and an electric control module, and the fresh air module and the electric control module are arranged on opposite sides of the shell.

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