Fresh air modules and air conditioning equipment

Abstract

This utility model relates to a fresh air module and an air conditioning device. The fresh air module includes a housing, a fan, and a first damper. The housing has a first air outlet, a second air outlet, and a third air outlet. The fan is located inside the housing and has an air inlet and an air outlet channel. A switching port is provided on the wall of the air outlet channel. The first damper is movably installed inside the housing. The fresh air module can switch between exhaust mode and fresh air mode. In exhaust mode, the first damper closes the switching port, cutting off the connection between the third air outlet and the air inlet, while the second air outlet connects to the air inlet, and the air outlet channel connects to the third air outlet. In fresh air mode, the first damper opens the switching port, connecting the third air outlet to the air inlet, and the air outlet channel connects to the first air outlet. The air duct switching structure of this utility model's fresh air module has a simple design and is easy to manufacture.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, specifically to a fresh air module and an air conditioning device. Background Technology

[0002] Most existing ducted air conditioning units and other air conditioning equipment are equipped with fresh air modules to bring fresh outdoor air into the room. In related technologies, to meet different user application scenarios, the outer casing of the fresh air module is usually equipped with an indoor air inlet and an indoor air outlet to realize the dual functions of indoor air supply and exhaust. However, the internal air duct switching structure of the above-mentioned fresh air modules is complex in design and difficult to manufacture. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a fresh air module with a simple air duct switching structure design that is easy to process and manufacture.

[0005] An embodiment of this utility model also proposes an air conditioning device.

[0006] The fresh air module of this utility model includes: a housing, the housing having a first air outlet, a second air outlet, and a third air outlet; a fan, the fan being disposed inside the housing, the fan having an air inlet and an air outlet channel, the wall of the air outlet channel having a switching port; and a first damper, the first damper being movably installed inside the housing; the fresh air module is switchable between an exhaust mode and a fresh air mode. In the exhaust mode, the first damper closes the switching port to cut off the connection between the third air outlet and the air inlet, the second air outlet is connected to the air inlet, and the air outlet channel is connected to the third air outlet; in the fresh air module, the first damper opens the switching port to connect the third air outlet to the air inlet, and the air outlet channel is connected to the first air outlet.

[0007] According to an embodiment of the present invention, in exhaust mode, the airflow entering the second air inlet can be introduced into the air inlet. The first damper cuts off the connection between the third air inlet and the air inlet. The outlet channel can introduce airflow into the third air inlet, thereby achieving exhaust from the third air inlet. In fresh air mode, the switching port is opened so that airflow entering the third air inlet can be introduced into the air inlet. Since the outlet channel is connected to the first air inlet, fresh air is discharged from the first air inlet. Because the switching port is provided on the wall of the outlet channel, and the switching port is opened and closed by the first damper, the fresh air module can switch between exhaust mode and fresh air mode. The switching structure design is simple and easy to manufacture.

[0008] In some embodiments, the switching port and the air inlet are arranged on the same side of the fan. This facilitates communication between the switching port and the air inlet, reduces the complexity of the duct design, improves the smoothness of airflow within the duct, and optimizes the structural layout of components within the housing.

[0009] In some embodiments, the fan includes a volute, and both the air inlet and the air outlet are disposed within the volute. An air guide cavity is defined between the outer wall of the volute and the inner wall of the housing. The air guide cavity communicates with the air inlet. In the exhaust mode, the second air outlet communicates with the air guide cavity. In the fresh air mode, the third air outlet communicates with the air guide cavity through the switching port. The fresh air module of this embodiment uses the volute and housing themselves to enclose the air guide cavity, simplifying the internal structure of the fresh air module and facilitating switching between different modes, resulting in better performance.

[0010] In some embodiments, the fresh air module further includes a first driving member connected to the first damper. The first driving member drives the first damper to rotate relative to the volute to open and close the switching port. Because the first driving member drives the first damper to rotate relative to the volute, the first damper is automatically controlled by the first driving member, thereby improving the convenience of switching between different modes of the fresh air module. Furthermore, because the first driving member drives the first damper to rotate, the operation of the first damper is simple, requires less installation space, and is easy to manufacture.

[0011] In some embodiments, the first damper is located outside the fan, and the first damper is pivotally connected to the fan. This reduces the resistance of the first damper to airflow, improving airflow smoothness and reducing energy consumption. In the exhaust mode, on the projection of an axis orthogonal to the switching port, the outer periphery of the switching port is located within the outer periphery of the first damper, or the outer periphery of the switching port coincides with the outer periphery of the first damper. This improves the sealing effect of the first damper and reduces the probability of airflow leakage at the switching port location.

[0012] In some embodiments, the first damper has a first abutment portion, and the fan has a first stop portion. The first stop portion is arranged adjacent to the switching port. In the exhaust mode, the first abutment portion abuts against the first stop portion, and in the fresh air mode, the first abutment portion and the first stop portion are spaced apart. Because the first abutment portion abuts against the first stop portion, the position of the first damper can be limited, improving the positional accuracy of the first damper after rotation, and the sealing effect of the mating position of the first abutment portion and the first stop portion can also be guaranteed.

[0013] In some embodiments, in the fresh air mode, there is a clearance gap between the first abutment and the housing. This avoids the problem of noise caused by the first abutment hitting the inner wall of the housing when the first damper switches to fresh air mode.

[0014] In some embodiments, the fresh air module further includes a second air damper, which is movably installed within the housing. In exhaust mode, the second air damper blocks the airflow between the first air outlet and the air outlet channel. In fresh air mode, the second air damper opens to connect the air outlet channel with the first air outlet. The second air damper can cut off the airflow between the first air outlet and the air outlet channel in exhaust mode, and can connect the first air outlet and the air outlet channel in fresh air mode. The first and second air dampers can work together to improve the convenience of switching airflow modes in fresh air mode, and the implementation is simple and reliable.

[0015] In some embodiments, the air outlet duct includes a first section and a second section, the first section being connected to the second section, the second section being located downstream of the first section along the airflow direction, the switching port being located in the second section, and the second section being connected to the third air outlet. In the fresh air mode, the second damper cuts off the connection between the first and second sections, and the first section is connected to the first air outlet. In the exhaust mode, the first and second sections are connected, and the first section is cut off from the first air outlet. The fresh air module of this embodiment can control the connection of the first section to both the first and third air outlets via the second damper, thereby reducing the number of dampers controlled within the fresh air module. Furthermore, the switching structure of the air duct is simple in design and easy to manufacture.

[0016] In some embodiments, the fan includes a volute, with both the air inlet and the air outlet channel located within the volute. The second damper is located within the air outlet channel and is pivotally connected to the volute. Because the second damper is located within the air outlet channel, the structure of the second damper and the fan can be compacted, reducing their space occupation. Furthermore, the pivotal connection of the second damper to the volute simplifies its operation and facilitates its manufacturing.

[0017] In some embodiments, the volute has a second stop and a third stop, which are respectively arranged on two opposing inner wall surfaces of the air outlet channel. The second stop is closer to the first air outlet than the third stop. The second damper has a second abutment. In the exhaust mode, the second abutment abuts against the second stop; in the fresh air mode, the second abutment abuts against the third stop. Because the second abutment abuts against the second stop in the exhaust mode, it can both limit the position of the second damper, improving the positional accuracy after rotation, and reduce the probability of airflow flowing from the first section to the first air outlet, ensuring the reliability of airflow cutoff between the first section and the first air outlet. Similarly, because the second abutment abuts against the third stop in the fresh air mode, it can both limit the position of the second damper, improving the positional accuracy after rotation, and reduce the probability of airflow flowing from the first section to the second section, ensuring the reliability of airflow cutoff between the first section and the second section.

[0018] In some embodiments, the second stop includes a first surface formed on the inner wall of the air outlet duct. In the exhaust mode, the first surface abuts against a side of the second abutment portion in the thickness direction. This facilitates the manufacturing of the volute, and because the first surface abuts against a side of the second abutment portion in the thickness direction, the second stop and the second damper can overlap in a surface contact manner, further improving the sealing effect between the second stop and the second damper.

[0019] In some embodiments, the third stop includes a second surface formed on the inner wall of the air outlet duct. In the fresh air mode, the second surface abuts against the other side of the second abutment in the thickness direction. This facilitates the manufacturing of the volute, and because the second surface abuts against the other side of the second abutment in the thickness direction, the third stop and the second damper can overlap in a surface contact manner, further improving the sealing effect between the second stop and the second damper.

[0020] In some embodiments, the fresh air module further includes a second driving component connected to the second damper. The second driving component drives the second damper to rotate relative to the housing. The second damper is automatically controlled by the second driving component, thereby improving the convenience of switching between different modes of the fresh air module. Furthermore, since the second driving component drives the second damper to rotate, the operation of the second damper is simple, requires less installation space, and is easy to manufacture.

[0021] In some embodiments, the fresh air module further includes a third air damper, which is movably mounted on the housing to open and close the second air vent. When the fresh air module is in fresh air mode, the second air vent is deactivated and can be closed by the third air damper, allowing air to enter through the third air vent and exit through the first air vent. Additionally, when the fresh air module is in a shutdown state, the second air vent can be closed by the third air damper to prevent dust from entering the housing, thereby ensuring the cleanliness of the housing and extending the service life of the fresh air module.

[0022] In some embodiments, the fresh air module further includes a third driving component. Both the third damper and the third driving component are housed within the casing. The third driving component is connected to the third damper and drives the third damper to rotate relative to the casing. Because the third driving component drives the third damper to rotate relative to the casing, the third damper can be automatically controlled via the third driving component, thereby improving the convenience of switching between different modes of the fresh air module. Furthermore, since the third driving component drives the third damper to rotate, the operation of the third damper is simple, requires less installation space, and is easy to manufacture.

[0023] In some embodiments, the fresh air module further includes a fourth air damper, which is movably mounted on the housing to open and close the third air vent. Thus, when the fresh air module is powered on, the third air vent can be opened via the fourth air damper to allow air to enter or exit through the third vent; when the fresh air module is powered off, the third air vent can be closed via the fourth air damper to prevent backflow.

[0024] In some embodiments, the housing includes a shell and a cover plate. The lower side of the shell has an opening, and the cover plate seals the opening and is detachably connected to the shell. When it is necessary to inspect or replace the filter element inside the housing, the cover plate can be removed from the shell to open the opening, thereby facilitating the inspection or replacement of the filter element and providing good practical results.

[0025] Another embodiment of the air conditioning device of the present invention includes the fresh air module described in any one of the embodiments of the present invention.

[0026] In the air conditioning device of this utility model embodiment, in exhaust mode, airflow entering the second air vent can be introduced into the air inlet. The first damper cuts off the connection between the third air vent and the air inlet. The air outlet channel can introduce airflow into the third air vent, thereby achieving exhaust from the third air vent. In fresh air mode, the switching port opens so that airflow entering the third air vent can be introduced into the air inlet. Since the air outlet channel is connected to the first air vent, fresh air is discharged from the first air vent. Because the switching port is provided on the wall of the air outlet channel, and the switching port can be opened and closed by the first damper, the fresh air module can be switched between exhaust mode and fresh air mode. Moreover, the switching structure design is simple and easy to manufacture. Attached Figure Description

[0027] Figure 1 This is a perspective view of the fresh air module (in exhaust mode) of this utility model embodiment with the cover plate removed.

[0028] Figure 2 This is a perspective view of the fresh air module (in exhaust mode) of this utility model embodiment with the cover plate removed from another angle.

[0029] Figure 3 This is a cross-sectional view of the fresh air module (in exhaust mode) according to an embodiment of this utility model.

[0030] Figure 4 This is a longitudinal cross-sectional view of the fresh air module (in exhaust mode) according to an embodiment of this utility model.

[0031] Figure 5 This is a perspective view of the fresh air module (in fresh air mode) of this utility model embodiment with the cover plate removed.

[0032] Figure 6 This is a perspective view of the fresh air module (in fresh air mode) of this utility model embodiment with the cover plate removed from another angle.

[0033] Figure 7 This is a cross-sectional view of the fresh air module (in fresh air mode) according to an embodiment of the present invention.

[0034] Figure 8 This is a longitudinal cross-sectional view of the fresh air module (in fresh air mode) according to an embodiment of this utility model.

[0035] Figure label:

[0036] 1. Casing; 11. Housing; 111. First air vent; 112. Second air vent; 113. Third air vent; 114. Opening; 12. Cover plate; 13. Air guide cavity; 14. Clearance clearance;

[0037] 2. Fan; 21. Volute; 211. Air inlet; 212. Air outlet; 2121. First section; 2122. Second section; 213. Switching port; 214. First stop; 215. Second stop; 2151. First surface; 216. Third stop; 2161. Second surface; 22. Impeller; 23. Impeller motor;

[0038] 31. First air damper; 311. First contact part; 32. Second air damper; 321. Second contact part; 33. Third air damper; 34. Fourth air damper. Detailed Implementation

[0039] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0040] The following is a reference appendix. Figures 1 to 8 This invention describes a fresh air module and an air conditioning device according to embodiments of the present invention.

[0041] like Figures 1 to 5 As shown, the fresh air module of this utility model embodiment includes: a housing 1, a fan 2 and a first air damper 31. The housing 1 is provided with a first air outlet 111, a second air outlet 112 and a third air outlet 113. The fan 2 is located inside the housing 1 and is provided with an air inlet 211 and an air outlet 212. A switching port 213 is provided on the wall of the air outlet 212. The first air damper 31 is movably installed inside the housing 1.

[0042] The fresh air module can switch between exhaust and fresh air modes. For example... Figure 3 and Figure 4 As shown, in exhaust mode, the first damper 31 closes the switching port 213, thus cutting off the connection between the third air outlet 113 and the air inlet 211. The second air outlet 112 connects to the air inlet 211, and the air outlet duct 212 connects to the third air outlet 113. Figure 7 and Figure 8 As shown, in the fresh air module, the first air damper 31 opens the switching port 213 so that the third air outlet 113 is connected to the air inlet 211 and the air outlet 212 is connected to the first air outlet 111.

[0043] Understandably, in exhaust mode, the fresh air module draws in air through the second vent 112 and exhausts air through the third vent 113. In fresh air mode, the fresh air module draws in air through the third vent 113 and exhausts air through the first vent 111.

[0044] According to an embodiment of the present invention, in exhaust mode, the airflow entering the second air vent 112 can be introduced into the air inlet 211. The first damper 31 cuts off the connection between the third air vent 113 and the air inlet 211. The air outlet duct 212 can introduce airflow into the third air vent 113, thereby achieving exhaust from the third air vent 113. In fresh air mode, the switching port 213 is opened so that the airflow entering the third air vent 113 can be introduced into the air inlet 211. Since the air outlet duct 212 is connected to the first air vent 111, fresh air is discharged from the first air vent 111. Because the switching port 213 is provided on the wall of the air outlet duct 212, and the switching port 213 is opened and closed by the first damper 31, the fresh air module can switch between exhaust mode and fresh air mode. The switching structure design is simple and easy to manufacture.

[0045] Optionally, such as Figure 1 and Figure 2 As shown, the switching port 213 and the air inlet 211 are arranged on the same side of the fan 2, which facilitates communication between the switching port 213 and the air inlet 211, reduces the complexity of the duct design, improves the smoothness of airflow within the duct, and optimizes the structural layout of components within the housing 1. Figure 4 As shown, both the switching port 213 and the air inlet 211 are located on the lower side of the fan 2.

[0046] like Figure 1 , Figure 4 and Figure 5 As shown, the fan 2 includes a volute 21, an air inlet 211 and an air outlet 212, both of which are located within the volute 21. An air guide cavity 13 is defined between the outer wall of the volute 21 and the inner wall of the housing 1. The air guide cavity 13 communicates with the air inlet 211. In exhaust mode, the second air outlet 112 communicates with the air guide cavity 13. In fresh air mode, the third air outlet 113 communicates with the air guide cavity 13 via a switching port 213. It can be understood that the fresh air module of this embodiment uses the volute 21 and the housing 1's own structure to enclose the air guide cavity 13, which simplifies the internal structure of the fresh air module and facilitates switching between different modes, resulting in better performance.

[0047] In exhaust mode, such as Figure 3 and Figure 4 As shown, the second air vent 112 is connected to the air guide cavity 13, and the air guide cavity 13 is connected to the air inlet 211. Thus, the fan 2 can introduce the airflow from the second air vent 112 into the volute 21 and discharge it through the air outlet 212. The air outlet 212 is connected to the third air vent 113, so that indoor air can be discharged to the outside through the third air vent 113.

[0048] like Figure 5 and Figure 7As shown, in fresh air mode, the third air vent 113 is connected to the air guide cavity 13 through the switching port 213, and the air guide cavity 13 is connected to the air inlet 211. Thus, the fan 2 can introduce the airflow from the third air vent 113 into the volute 21 and discharge it through the air outlet 212. The air outlet 212 is connected to the first air vent 111, so that outdoor air can be discharged into the room through the first air vent 111.

[0049] Optionally, such as Figure 1 and Figure 5 As shown, the fresh air module also includes a first driving component (not shown), which is connected to the first damper 31. The first driving component drives the first damper 31 to rotate relative to the volute 21 to open and close the switching port 213. For example, the first driving component can be a motor. Because the first driving component drives the first damper 31 to rotate relative to the volute 21, the first damper 31 can be automatically controlled by the first driving component, thereby improving the convenience of switching between different modes of the fresh air module. In addition, because the first driving component drives the first damper 31 to rotate, the operation process of the first damper 31 is simple, the required installation space is small, and it is easy to manufacture.

[0050] Optionally, such as Figure 5 As shown, the first damper 31 is located outside the fan 2, and the first damper 31 is pivotally connected to the fan 2. It can be understood that the first damper 31 is located outside the fan 2, that is, outside the air outlet duct 212. Compared to the scheme where the first damper 31 is located inside the air outlet duct 212, this reduces the resistance to airflow caused by the first damper 31, which is beneficial for improving the smoothness of airflow and reducing energy consumption.

[0051] like Figure 4 As shown, in exhaust mode, on the projection of the axis orthogonal to the switching port 213, the outer periphery of the switching port 213 is located within the outer periphery of the first damper 31, or the outer periphery of the switching port 213 coincides with the outer periphery of the first damper 31. This can improve the sealing effect of the first damper 31 and reduce the probability of airflow leakage at the location of the switching port 213.

[0052] Optionally, such as Figure 4 and Figure 8 As shown, the first damper 31 has a first abutment portion 311, and the fan 2 is provided with a first stop portion 214. The first stop portion 214 is arranged adjacent to the switching port 213, as shown. Figure 4 As shown, in exhaust mode, the first contact part 311 abuts against the first stop part 214. Figure 8As shown, in the fresh air mode, the first abutment part 311 and the first stop part 214 are spaced apart. Since the first abutment part 311 and the first stop part 214 abut against each other, the position of the first damper 31 can be limited, improving the positional accuracy of the first damper 31 after rotation, and the sealing effect of the mating position of the first abutment part 311 and the first stop part 214 can also be guaranteed.

[0053] For example, such as Figure 4 and Figure 8 As shown, the first stop portion 214 is formed on the outer wall surface of the volute 21, and the first abutting portion 311 abuts against the first stop portion 214 by means of surface contact, so as to further improve the sealing effect.

[0054] Optionally, in fresh air mode, a clearance gap 14 is provided between the first contact portion 311 and the housing 1. For example... Figure 8 As shown, there is a clearance gap 14 between the first abutment part 311 and the cover plate 12 of the housing 1. This can avoid the problem of noise caused by the first abutment part 311 hitting the inner wall of the housing 1 (cover plate 12) when the first air damper 31 switches to fresh air mode.

[0055] Optionally, such as Figure 3 and Figure 7 As shown, the fresh air module also includes a second air damper 32, which is movably installed inside the housing 1. Figure 3 As shown, in exhaust mode, the second damper 32 cuts off the connection between the first air outlet 111 and the air outlet duct 212. Figure 7 As shown, in fresh air mode, the second damper 32 opens to connect the air outlet duct 212 with the first air vent 111. It can be understood that the second damper 32 can cut off the airflow between the first air vent 111 and the air outlet duct 212 in exhaust mode, while in fresh air mode, the second damper 32 can connect the first air vent 111 and the air outlet duct 212, thus working in conjunction with the first damper 31 to control the airflow path.

[0056] The position of the second air damper 32 relative to the casing 1 varies in different modes. The first air damper 31 and the second air damper 32 can work together to improve the convenience of switching the fresh air mode duct. The implementation method is simple and the operation is reliable.

[0057] Optionally, such as Figure 3 and Figure 7As shown, the fan 2 includes a volute 21, an air inlet 211 and an air outlet duct 212, both of which are located within the volute 21. A second damper 32 is located within the air outlet duct 212 and is pivotally connected to the volute 21. Because the second damper 32 is located within the air outlet duct 212, the structural arrangement of the second damper 32 and the fan 2 is compact, reducing their space occupation. Furthermore, the pivotal connection of the second damper 32 to the volute 21 simplifies the operation of the second damper 32 and facilitates its manufacturing.

[0058] like Figure 3 and Figure 7 As shown, the air duct includes a first section 2121 and a second section 2122. The first section 2121 is connected to the second section 2122. The second section 2122 is located downstream of the first section 2121 along the airflow direction. The switching port 213 is located in the second section 2122, and the second section 2122 is connected to the third air outlet 113. Figure 7 As shown, in fresh air mode, the second damper 32 cuts off the airflow between the first segment 2121 and the second segment 2122, and the first segment 2121 is connected to the first air vent 111. In exhaust mode, the first segment 2121 and the second segment 2122 are connected, and the first segment 2121 is cut off from the first air vent 111. It can be understood that the second damper 32 can cut off the airflow between the first air vent 111 and the air outlet duct 212 in exhaust mode, and it can also cut off the airflow between the third air vent 113 and the first segment 2121 in fresh air mode.

[0059] In this embodiment of the invention, the fresh air module can control the first section 2121 to connect with the first air outlet 111 and the third air outlet 113 respectively through the second air damper 32, thereby reducing the number of air dampers controlled in the fresh air module. Moreover, the duct switching structure design is simple and easy to process and manufacture.

[0060] Optionally, such as Figure 3 and Figure 7 As shown, the volute 21 has a second stop 215 and a third stop 216, which are respectively arranged on two opposite inner wall surfaces of the air outlet duct 212. The second stop 215 is closer to the first air outlet 111 than the third stop 216. The second damper 32 has a second abutment 321. In exhaust mode, the second abutment 321 abuts against the second stop 215; in fresh air mode, the second abutment 321 abuts against the third stop 216. Since the second abutment 321 abuts against the second stop 215 in exhaust mode, it can both limit the position of the second damper 32, improving the positional accuracy of the second damper 32 after rotation, and reduce the probability of airflow flowing from the first section 2121 to the first air outlet 111, ensuring the reliability of airflow cutoff between the first section 2121 and the first air outlet 111.

[0061] Since the second contact part 321 abuts against the third stop part 216 in the fresh air mode, it can limit the position of the second air door 32, improve the position accuracy of the second air door 32 after rotation, and reduce the probability of airflow flowing from the first section 2121 to the second section 2122, thus ensuring the reliability of airflow cutoff between the first section 2121 and the second section 2122.

[0062] For example, such as Figure 3 and Figure 7 As shown, the second stop portion 215 includes a first surface 2151, which is formed on the inner wall surface of the air outlet channel 212. In exhaust mode, the first surface 2151 abuts against one side of the second abutting portion 321 in the thickness direction. This facilitates the manufacturing of the volute 21, and because the first surface 2151 abuts against one side of the second abutting portion 321 in the thickness direction, the second stop portion 215 and the second damper 32 can overlap in a surface contact manner, thereby further improving the sealing effect between the second stop portion 215 and the second damper 32.

[0063] For example, such as Figure 3 and Figure 7 As shown, the third stop portion 216 includes a second surface 2161, which is formed on the inner wall of the air outlet duct 212. In fresh air mode, the second surface 2161 abuts against the other side of the second abutting portion 321 in the thickness direction. This facilitates the manufacturing of the volute 21, and because the second surface 2161 abuts against the other side of the second abutting portion 321 in the thickness direction, the third stop portion 216 and the second damper 32 can overlap in a surface contact manner, thereby further improving the sealing effect between the second stop portion 215 and the second damper 32.

[0064] For example, both the first surface 2151 and the second surface 2161 can be planar.

[0065] Optionally, the fresh air module also includes a second drive unit (not shown), which is connected to the second damper 32 and drives the second damper 32 to rotate relative to the housing 1. For example, the second drive unit can be a motor. Since the second drive unit drives the second damper 32 to rotate relative to the housing 1, the second damper 32 can be automatically controlled by the second drive unit, thereby improving the convenience of switching between different modes of the fresh air module. Furthermore, since the second drive unit drives the second damper 32 to rotate, the operation of the second damper 32 is simple, requires less installation space, and is easy to manufacture.

[0066] Optionally, such as Figure 4 and Figure 8As shown, the fresh air module also includes a third air damper 33, which is movably mounted on the housing 1 to open and close the second air vent 112. When the fresh air module is in fresh air mode, the second air vent 112 is deactivated and can be closed by the third air damper 33, allowing air to enter through the third air vent 113 and exit through the first air vent 111. When the fresh air module is in exhaust mode, the second air vent 112 is activated and can be opened by the third air damper 33, allowing air to enter through the second air vent 112 and exit through the third air vent 113. This facilitates control of the airflow path within the fresh air module and improves its performance.

[0067] In addition, when the fresh air module is in a shutdown state, the second air outlet 112 can be closed through the third air damper 33 to prevent dust from entering the casing 1, thereby ensuring the cleanliness of the casing 1 and helping to improve the service life of the fresh air module.

[0068] The fresh air module also includes a third drive unit (not shown). Both the third damper 33 and the third drive unit are housed within the housing 1. The third drive unit is connected to the third damper 33 and is used to drive the third damper 33 to rotate relative to the housing 1. For example, the third drive unit can be a motor. Because the third drive unit drives the third damper 33 to rotate relative to the housing 1, the third damper 33 can be automatically controlled by the third drive unit, thereby improving the convenience of switching between different modes of the fresh air module. Furthermore, because the third drive unit drives the third damper 33 to rotate, the operation of the third damper 33 is simple, requires less installation space, and is easy to manufacture.

[0069] In addition, since the third air damper 33 and the third drive component are both located inside the housing 1, the components inside the housing 1 can be arranged compactly, which helps to reduce the space occupied by the fresh air module.

[0070] Optionally, such as Figure 1 , Figure 2 and Figure 5 As shown, the fresh air module also includes a fourth air damper 34, which is movably mounted on the housing 1 to open and close the third air vent 113. Thus, when the fresh air module is powered on, the third air vent 113 can be opened via the fourth air damper 34 to allow air to enter or exit through the third air vent. When the fresh air module is powered off, the third air vent 113 can be closed via the fourth air damper 34 to prevent backflow.

[0071] The fresh air module also includes a fourth drive unit (not shown), which is connected to the fourth damper 34. The fourth drive unit is used to drive the fourth damper 34 to rotate relative to the housing 1 to open and close the third air outlet 113. Since the fourth drive unit drives the fourth damper 34 to rotate, the operation of the fourth damper 34 is simple, the required installation space is small, and it is easy to manufacture.

[0072] Optionally, such as Figure 4 and Figure 8 As shown, the housing 1 includes a shell 11 and a cover plate 12. The shell 11 has an opening 114 on its lower side, which is sealed by the cover plate 12, which is detachably connected to the shell 11. It is understood that after the fresh air module is installed indoors, the cover plate 12 faces downwards. When it is necessary to inspect or replace the filters inside the housing 1, the cover plate 12 can be removed from the shell 11 to open the opening 114, thus facilitating inspection or replacement of the components inside the housing 1. The actual usage effect is good.

[0073] Optionally, such as Figure 4 and Figure 8 As shown, the fan 2 is a centrifugal fan. The fan 2 also includes a rotor 22 and a rotor motor 23. The rotor 22 is housed within a volute 21, opposite to and connected to the air inlet 211. The rotor motor 23 is located on the side of the volute 21 away from the air inlet 211 and is connected to the rotor 22, driving the rotor 22 to rotate. When the rotor 22 rotates, it can guide airflow from the air inlet 211 to the air outlet duct 212, thus achieving airflow transmission and providing good airflow guidance.

[0074] Another embodiment of the air conditioning device of this utility model includes the fresh air module of this utility model. For example, the air conditioning device is a ducted air conditioner.

[0075] In the air conditioning device of this embodiment, in exhaust mode, the airflow entering the second air vent 112 can be introduced into the air inlet 211. The first damper 31 cuts off the connection between the third air vent 113 and the air inlet 211. The air outlet duct 212 can introduce airflow into the third air vent 113, thereby achieving exhaust from the third air vent 113. In fresh air mode, the switching port 213 is opened so that the airflow entering the third air vent 113 can be introduced into the air inlet 211. Since the air outlet duct 212 is connected to the first air vent 111, fresh air is discharged from the first air vent 111. Because the switching port 213 is provided on the wall of the air outlet duct 212, and the switching port 213 is opened and closed by the first damper 31, the fresh air module can switch between exhaust mode and fresh air mode. The switching structure design is simple and easy to manufacture.

[0076] In the description of this utility model, it should be understood that 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", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0077] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0078] In this utility model, unless otherwise explicitly 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, an electrical connection, or a connection that allows communication between them; 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0079] In this utility model, unless otherwise explicitly 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.

[0080] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. 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.

[0081] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A fresh air module, characterized in that, include: The housing (1) is provided with a first air vent (111), a second air vent (112) and a third air vent (113); A fan (2) is installed inside the housing (1). The fan (2) is provided with an air inlet (211) and an air outlet (212). A switching port (213) is provided on the wall of the air outlet (212). The first damper (31) is movably installed inside the housing (1); The fresh air module can be switched between exhaust mode and fresh air mode. In exhaust mode, the first air damper (31) closes the switching port (213) to cut off the connection between the third air outlet (113) and the air inlet (211). The second air outlet (112) is connected to the air inlet (211), and the air outlet channel (212) is connected to the third air outlet (113). In the fresh air module, the first air damper (31) opens the switching port (213) so that the third air outlet (113) is connected to the air inlet (211) and the air outlet channel (212) is connected to the first air outlet (111).

2. The fresh air module according to claim 1, characterized in that, The switching port (213) and the air inlet (211) are arranged on the same side of the fan (2).

3. The fresh air module according to claim 1, characterized in that, The fan (2) includes a volute (21), the air inlet (211) and the air outlet (212) are both located in the volute (21), and a guide cavity (13) is defined between the outer wall of the volute (21) and the inner wall of the housing (1). The guide cavity (13) is connected to the air inlet (211). In the exhaust mode, the second air outlet (112) is connected to the guide cavity (13). In the fresh air mode, the third air outlet (113) is connected to the guide cavity (13) through the switching port (213).

4. The fresh air module according to claim 3, characterized in that, The fresh air module also includes a first driving component, which is connected to the first damper (31). The first driving component is used to drive the first damper (31) to rotate relative to the volute (21) to open and close the switching port (213).

5. The fresh air module according to claim 1, characterized in that, The first damper (31) is located on the outside of the fan (2), and the first damper (31) is pivotally connected to the fan (2). In the exhaust mode, on the projection of the switching port (213) along the axis orthogonal to the switching port (213), the outer periphery of the switching port (213) is located within the outer periphery of the first damper (31), or the outer periphery of the switching port (213) coincides with the outer periphery of the first damper (31).

6. The fresh air module according to claim 5, characterized in that, The first damper (31) has a first abutting part (311), and the fan (2) is provided with a first stop part (214). The first stop part (214) is arranged adjacent to the switching port (213). In the exhaust mode, the first abutting part (311) abuts against the first stop part (214). In the fresh air mode, the first abutting part (311) and the first stop part (214) are spaced apart.

7. The fresh air module according to claim 6, characterized in that, In the fresh air mode, there is a clearance gap (14) between the first contact part (311) and the housing (1).

8. The fresh air module according to claim 1, characterized in that, The fresh air module also includes a second air damper (32), which is movably installed inside the housing (1). In the exhaust mode, the second air damper (32) cuts off the connection between the first air outlet (111) and the air outlet channel (212). In the fresh air mode, the second air damper (32) opens to connect the air outlet channel (212) with the first air outlet (111).

9. The fresh air module according to claim 8, characterized in that, The air outlet duct (212) includes a first section (2121) and a second section (2122). The first section (2121) is connected to the second section (2122). The second section (2122) is located downstream of the first section (2121) along the airflow direction. The switching port (213) is located in the second section (2122) and the second section (2122) is connected to the third air outlet (113). In the fresh air mode, the second damper (32) cuts off the connection between the first section (2121) and the second section (2122). The first section (2121) is connected to the first air outlet (111). In the exhaust mode, the first section (2121) and the second section (2122) are connected. The first section (2121) is cut off from the first air outlet (111).

10. The fresh air module according to claim 8, characterized in that, The fan (2) includes a volute (21), the air inlet (211) and the air outlet (212) are both located in the volute (21), and the second damper (32) is located in the air outlet (212) and is pivotally connected to the volute (21).

11. The fresh air module according to claim 10, characterized in that, The volute (21) has a second stop (215) and a third stop (216), which are respectively arranged on two opposite inner wall surfaces of the air outlet channel (212). The second stop (215) is closer to the first air outlet (111) than the third stop (216). The second damper (32) has a second abutment (321). In the exhaust mode, the second abutment (321) abuts against the second stop (215). In the fresh air mode, the second abutment (321) abuts against the third stop (216).

12. The fresh air module according to claim 11, characterized in that, The second stop (215) includes a first surface (2151), which is formed on the inner wall of the air outlet channel (212). In the exhaust mode, the first surface (2151) abuts against one side of the second abutting part (321) in the thickness direction. And / or, the third stop (216) includes a second surface (2161) formed on the inner wall of the air outlet channel (212), and in the fresh air mode, the second surface (2161) abuts against the other side of the second abutment (321) in the thickness direction.

13. The fresh air module according to claim 8, characterized in that, The fresh air module also includes a second driving component, which is connected to the second air damper (32). The second driving component is used to drive the second air damper (32) to rotate relative to the housing (1).

14. The fresh air module according to claim 1, characterized in that, The fresh air module also includes a third air damper (33), which is movably mounted on the housing (1) to open and close the second air vent (112).

15. The fresh air module according to claim 14, characterized in that, The fresh air module also includes a third driving component. The third air damper (33) and the third driving component are both located inside the housing (1). The third driving component is connected to the third air damper (33) and is used to drive the third air damper (33) to rotate relative to the housing (1).

16. The fresh air module according to claim 1, characterized in that, The fresh air module also includes a fourth air damper (34), which is movably mounted on the housing (1) to open and close the third air vent (113).

17. The fresh air module according to any one of claims 1-16, characterized in that, The housing (1) includes a housing (11) and a cover plate (12). The housing (11) has an opening (114) on its lower side. The cover plate (12) blocks the opening (114) and is detachably connected to the housing (11).

18. An air conditioning device, characterized in that, The fresh air module includes any one of claims 1-17.

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