Fresh air module and fresh air device

Abstract

The utility model discloses a kind of fresh air module and fresh air equipment, the shell of fresh air module is equipped with first air frame to third air frame, fan is set in shell, its volute is equipped with air outlet passage, switching channel and intermediate passage, air outlet passage is communicated with first air frame, switching channel is communicated with second air frame, intermediate passage is communicated with third air frame by air guide cavity, switching channel is equipped with switching mouth being communicated with air guide cavity, first air door is used to control intermediate passage optionally with air outlet passage or switching channel communication, second air door is used to open and close switching mouth, first driving part is connected with first air door, second driving part is connected with second air door, first air frame avoids first driving part and second driving part, air port support is detachably connected with shell, air port support shields at least one of first driving part, second driving part and part air outlet passage.The fresh air module provided by the utility model has the advantages of high maintenance efficiency and low maintenance cost for the first driving part and the second driving part.

Description

Technical Field

[0001] This utility model relates to the field of fresh air system technology, specifically to a fresh air module and a fresh air 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, fresh air modules usually have damper assemblies to switch between fresh air mode and exhaust mode. Compared with other components of the fresh air module, the damper assembly has lower reliability, and maintenance requires the entire fresh air module to be disassembled, which is inconvenient and costly. 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, which has the advantages of high maintenance efficiency and low maintenance cost for the first and second driving components.

[0005] An embodiment of this utility model also proposes a fresh air device.

[0006] The fresh air module of this utility model embodiment includes a housing, a fan, a first air damper, a second air damper, a first driving component, a second driving component, and an air outlet bracket. The housing is provided with a first air frame, a second air frame, and a third air frame. The fan is disposed inside the housing and includes a volute. The volute is provided with an air outlet channel, a switching channel, and an intermediate channel. The air outlet channel communicates with the first air frame, the switching channel communicates with the second air frame, and the intermediate channel communicates with the third air frame through an air guide cavity. The wall of the switching channel is provided with a switching port communicating with the air guide cavity. The damper is movably installed inside the housing and is used to control the intermediate channel to selectively communicate with the air outlet channel or the switching channel; the second damper is movably installed inside the housing and is used to open and close the switching port; the first drive member is connected to the first damper, the second drive member is connected to the second damper, and the first air frame avoids the first drive member and the second drive member; the air outlet bracket is detachably connected to the housing, and the air outlet bracket blocks at least one of the first drive member, the second drive member, and a portion of the air outlet channel.

[0007] According to the fresh air module of this utility model embodiment, the first air damper, driven by the first driving component, and the second air damper, driven by the second driving component, enable the fresh air module to have an exhaust mode and a fresh air mode. In exhaust mode, the first air damper controls the connection between the intermediate channel and the switching channel, and the second air damper closes the switching port. At this time, indoor air enters the intermediate channel through the third air vent and the air guide cavity, and is subsequently exhausted to the outside through the switching channel and the second air frame, thus achieving the exhaust function. In fresh air mode, the first air damper controls the connection between the intermediate channel and the air outlet channel, and the second air damper opens the switching port. At this time, outdoor air enters the intermediate channel through the second air frame, the switching channel, and the air guide cavity, and is subsequently exhausted to the room through the air outlet channel and the first air vent, thus achieving the fresh air function.

[0008] In this design, a first air frame is set to avoid the first air outlet, the first driving component, and the second driving component. The air outlet bracket blocks part of the first air frame to shield at least one of the first driving component, the second driving component, and part of the first air outlet. At this time, only the air outlet bracket needs to be removed to expose the first driving component and the second driving component, or to expose the maintenance space for inspecting the first driving component and the second driving component. This eliminates the need to disassemble the casing, effectively improving the maintenance efficiency and cost of the first driving component and the second driving component.

[0009] In some embodiments, the fresh air module further includes a third air damper and a third drive unit. The third air damper is movably installed inside the housing. When the fresh air module is working, the third air damper opens the second air frame. When the fresh air module stops working, the third air damper closes the second air frame. The third drive unit is connected to the third air damper.

[0010] The housing includes a first side plate, the first wind frame is disposed on the first side plate, and the first side plate covers the third drive component.

[0011] In some embodiments, the housing further includes a base plate, the third wind frame is disposed on the base plate, and the third drive member is mounted on the side of the volute facing the base plate.

[0012] In some embodiments, the vent bracket blocks the first driving member and the second driving member, and the vent bracket avoids the air outlet channel.

[0013] In some embodiments, the air outlet bracket is provided with an air outlet, and the volute is provided with a fourth air frame on the side facing the first air frame, the fourth air frame connecting the air outlet and the air outlet channel.

[0014] In some embodiments, the first drive member and the second drive member are mounted on the side of the volute facing the first wind frame, and each of the first drive member and the second drive member is arranged with the fourth wind frame along the vertical direction of the housing.

[0015] In some embodiments, on a projection plane perpendicular to the extension direction of the first wind frame, the projections of each of the fourth wind frame, the first drive member, and the second drive member coincide with the projection of the first wind frame.

[0016] In some embodiments, the housing includes a first side plate, a first air frame is disposed on the first side plate, an air outlet bracket is snapped into the first side plate, and / or the air outlet bracket is connected to the first side plate by fasteners.

[0017] In some embodiments, the housing includes a first side plate, and the air vent bracket is provided with a buckle on the side facing the first side plate, a portion of the buckle passing through the first air frame and abutting against the side of the first side plate facing the volute.

[0018] The air vent bracket is provided with mounting holes, and the first side plate is provided with threaded holes. The air vent bracket is connected to the first side plate by a threaded component that passes through the mounting holes and is threadedly connected to the threaded holes.

[0019] In some embodiments, the housing further includes a base plate, the third air frame is disposed on the base plate, and the air guide cavity is formed between the base plate and the volute.

[0020] In some embodiments, the fresh air module further includes a fourth damper and a fourth drive unit. The fourth damper is movably installed inside the housing and is used to open and close the third air frame. The fourth drive unit is connected to the fourth damper.

[0021] The fresh air device according to the embodiments of the present invention includes a fresh air module as described in any of the above embodiments.

[0022] The technical advantages of the fresh air device according to the present utility model embodiment are the same as the technical advantages of the fresh air module in the above embodiment, and will not be repeated here. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a fresh air module according to an embodiment of the present utility model.

[0024] Figure 2 This is an exploded view of the fresh air module according to an embodiment of the present utility model.

[0025] Figure 3 This is another exploded view of the fresh air module according to an embodiment of the present utility model.

[0026] Figure 4 This is a front view of a fresh air module according to an embodiment of the present utility model, wherein the air vent bracket is hidden.

[0027] Figure 5 This is a schematic diagram of a fresh air module according to an embodiment of the present utility model, wherein the air vent bracket and the first side plate are hidden.

[0028] Figure 6 This is a schematic diagram of a fresh air module according to an embodiment of the present utility model, wherein the air vent bracket, the first side plate, and part of the third side plate are hidden.

[0029] Figure 7 This is a cross-sectional view of the fresh air module according to an embodiment of the present utility model.

[0030] Figure 8 This is another cross-sectional view of the fresh air module according to an embodiment of the present utility model, wherein the fresh air module is in exhaust mode.

[0031] Figure 9 This is another cross-sectional view of the fresh air module according to an embodiment of the present utility model, wherein the fresh air module is in fresh air mode.

[0032] Figure 10 This is another schematic diagram of a fresh air module according to an embodiment of the present utility model, wherein the base plate, the first side plate, the second side plate, and the air outlet bracket are concealed.

[0033] Figure label:

[0034] 1. Housing; 11. First side panel; 111. First air frame; 12. Second side panel; 121. Second air frame; 13. Base plate; 131. Third air frame; 14. Air guide cavity; 2. Fan; 21. Volute; 211. Intermediate channel; 2111. Air inlet; 212. Air outlet channel; 213. Switching channel; 2131. Switching port; 22. Fourth air frame; 3. First drive component; 4. Second drive component; 5. Air outlet bracket; 51. Air outlet; 52. Buckle; 53. Mounting hole; 6. First air damper; 7. Second air damper; 8. Third air damper; 9. Fourth air damper; 10. Fourth drive component; 110. Third drive component. Detailed Implementation

[0035] 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.

[0036] The following is combined with Figures 1-10 This invention describes a fresh air module according to an embodiment of the present invention.

[0037] The fresh air module of this embodiment includes a housing 1, a fan 2, a first damper 6, a second damper 7, a first drive component 3, a second drive component 4, and an air outlet bracket 5. The housing 1 has a first air frame 111, a second air frame 121, and a third air frame 131. The fan 2 is disposed within the housing 1 and includes a volute 21. The volute 21 has an air outlet channel 212, a switching channel 213, and an intermediate channel 211. The air outlet channel 212 communicates with the first air frame 111, the switching channel 213 communicates with the second air frame 121, and the intermediate channel 211 communicates with the third air frame 131 through an air guide cavity 14. The wall of the switching channel 213 has a switching port 2131 communicating with the air guide cavity 14. The first damper 6 is movably installed within the housing 1 and is used to control the intermediate channel 211 to selectively communicate with the air outlet channel 212 or the switching channel 213. The second damper 7 is movably installed within the housing 1 and is used to open and close the switching port 2131. The first drive component 3 is connected to the first damper 6, and the second drive component 4 is connected to the second damper 7. The first air frame 111 avoids the first drive component 3 and the second drive component 4. The air outlet bracket 5 is detachably connected to the housing 1, and the air outlet bracket 5 blocks at least one of the first drive component 3, the second drive component 4, and part of the air outlet channel 212.

[0038] According to the fresh air module of this utility model embodiment, the first air damper 6, driven by the first driving member 3, and the second air damper 7, driven by the second driving member 4, enable the fresh air module to have an exhaust mode and a fresh air mode. In the exhaust mode, the first air damper 6 controls the intermediate channel 211 to connect with the switching channel 213, and the second air damper 7 closes the switching port 2131. At this time, indoor air enters the intermediate channel 211 through the third air vent and the air guide cavity 14, and is subsequently discharged to the outside via the switching channel 213 and the second air frame 121, thus achieving the exhaust function. In the fresh air mode, the first air damper 6 controls the intermediate channel 211 to connect with the air outlet channel 212, and the second air damper 7 opens the switching port 2131. At this time, outdoor air enters the intermediate channel 211 through the second air frame 121, the switching channel 213, and the air guide cavity 14, and is subsequently discharged to the room via the air outlet channel 212 and the first air vent, thus achieving the fresh air function.

[0039] In this design, the first air frame 111 is configured to avoid the air outlet channel 212, the first drive component 3, and the second drive component 4. The air outlet bracket 5 is used to block part of the first air frame 111 to shield at least one of the first drive component 3, the second drive component 4, and part of the air outlet channel 212. At this time, only the air outlet bracket 5 needs to be removed to expose the first drive component 3 and the second drive component 4, or to expose the maintenance space for inspecting the first drive component 3 and the second drive component 4. This eliminates the need to disassemble the casing 1, effectively improving the maintenance efficiency and cost of the first drive component 3 and the second drive component 4.

[0040] It should be noted that both the first driving component 3 and the second driving component 4 are stepper motors, and the two stepper motors are fixedly mounted on the volute 21 by threaded parts. The fan 2 also includes a fan wheel and a fan wheel motor. The fan wheel motor is connected to the fan wheel to drive the fan wheel to rotate, thereby causing the airflow in the volute 21 to flow from the intermediate channel 211 to the switching channel 213 or the air outlet channel 212.

[0041] In some embodiments, the fresh air module further includes a third damper 8 and a third drive member 110. The third damper 8 is movably installed inside the housing 1. When the fresh air module is working, the third damper 8 opens the second air frame 121, and when the fresh air module stops working, the third damper 8 closes the second air frame 121. The third drive member 110 is connected to the third damper 8. The housing 1 includes a first side plate 11, and the first air frame 111 is disposed on the first side plate 11, which shields the third drive member 110.

[0042] Therefore, when the fresh air module is powered on, whether in fresh air mode or exhaust mode, the second air frame 121 can be opened through the third air damper 8 to allow air to enter or exit. When the fresh air module is powered off, the second air frame 121 can be closed through the third air damper 8 to prevent backflow. Furthermore, the third drive unit 110 automatically controls the opening and closing of the third air damper 8, making its activation convenient. Simultaneously, the first side plate 11 of the housing 1 shields the third drive unit 110, eliminating the need for the air vent bracket 5 to further shield it, effectively reducing the size of the air vent bracket 5 and lowering the manufacturing cost of the fresh air module.

[0043] For example, the third damper 8 is pivotally connected to the volute 21, and controls the opening and closing of the second damper frame 121 by opening and closing the opening of the switching channel 213. The third drive unit 110 is correspondingly mounted on the volute 21.

[0044] In some embodiments, the housing 1 further includes a base plate 13, a third wind frame 131 disposed on the base plate 13, and a third drive member 110 mounted on the side of the volute 21 facing the base plate 13.

[0045] At this point, simply removing the base plate 13 will expose the third drive component 110, allowing for easy and quick maintenance of the third drive component 110.

[0046] For example, such as Figure 5 , Figure 6 , Figure 8 and Figure 10As shown, the third driving component 110 is a stepper motor. The housing 1 includes a second side plate 12 forming a second air frame 121 and a bottom plate 13 forming a third air frame 131. The orientations of the second air frame 121, the first air frame 111, and the third air frame 131 are perpendicular to each other. The third driving component 110 is installed below the volute 21. In some embodiments, the air outlet bracket 5 blocks the first driving component 3 and the second driving component 4, and the air outlet bracket 5 avoids the air outlet channel 212.

[0047] That is, after the air outlet bracket 5 is connected to the housing 1, it only avoids the air outlet channel 212 and completely blocks the first drive component 3 and the second drive component 4, thereby ensuring smooth air outlet of the fresh air module, effectively avoiding the exposure of the first drive component 3 and the second drive component 4 and affecting their service life, and also effectively improving the appearance of the fresh air module.

[0048] For example, such as Figure 1 As shown, the air outlet bracket 5 includes a baffle and a barrier disposed on the side of the baffle away from the housing 1. The baffle abuts against the side plate in the housing 1 where the first air frame 111 is provided. The side plate separates the first driving member 3 and the second driving member 4 from the outside.

[0049] In some embodiments, the air outlet bracket 5 is provided with an air outlet 51, and the volute 21 is provided with a fourth air frame 22 on the side facing the first air frame 111. The fourth air frame 22 connects the air outlet 51 and the air outlet channel 212.

[0050] The fourth air frame 22 extends from the volute 21 to the first air frame 111. This effectively reduces the gap between the fourth air frame 22 and the air outlet bracket 5 after the air outlet bracket 5 is connected to the housing 1, ensuring that the airflow in the duct is smoothly discharged to the outside through the air outlet 51. This effectively prevents airflow loss caused by the air outlet bracket 5 blocking the airflow in the duct. Furthermore, this design allows the fourth air frame 22 to block the air outlet 51, concealing the first drive component 3 and the second drive component 4 inside the air outlet bracket 5, effectively improving the aesthetic appearance of the fresh air module.

[0051] For example, such as Figure 1 As shown, the fourth air frame 22 is integrally formed with the volute 21. The fourth air frame 22 is a sleeve-shaped structure. The end of the fourth air frame 22 away from the volute 21 abuts against the air outlet bracket 5 and surrounds the air outlet 51.

[0052] In some embodiments, the first drive member 3 and the second drive member 4 are installed on the side of the volute 21 facing the first wind frame 111, and each of the first drive member 3 and the second drive member 4 is arranged with the fourth wind frame 22 along the vertical direction of the housing 1.

[0053] At this time, the fourth air frame 22 can better separate the first drive component 3 and the second drive component 4 from the outside world with the air outlet bracket 5, thereby further improving the appearance of the fresh air module.

[0054] For example, such as Figure 2 , Figure 4 and Figure 5 As shown, the first driving member 3 and the second driving member 4 are both adjacent to the fourth wind frame 22 and located below the fourth wind frame 22. The first driving member 3 and the second driving member 4 are arranged in the horizontal direction. The outer contour of the first wind frame 111 is rectangular. The width direction of the first wind frame 111 is consistent with the vertical direction of the housing 1. The width of the first wind frame 111 is greater than or equal to the distance between the upper edge of the fourth wind frame 22 and the lower edge of the first driving member 3.

[0055] In some embodiments, such as Figure 4 As shown, on the projection plane perpendicular to the extension direction of the first wind frame 111, the projections of each of the fourth wind frame 22, the first drive member 3, and the second drive member 4 coincide with the projection of the first wind frame 111.

[0056] Therefore, after removing the air vent bracket 5, the first drive component 3 and the second drive component 4 can be fully exposed, which greatly facilitates the disassembly and maintenance of the first drive component 3 and the second drive component 4. Moreover, the above arrangement also means that the side plate of the housing 1 with the first air frame 111 will not obstruct the fourth air frame 22, resulting in smoother fresh air exhaust from the fresh air module.

[0057] For example, such as Figure 2 , Figure 4 , Figures 6-8 As shown, the first damper 6 is pivotally connected to the volute 21, the second damper 7 is pivotally connected to the volute 21, and each of the first drive member 3 and the second drive member 4 is connected to the volute 21 by two bolts. The axial direction of the four bolts is consistent with the orientation of the first wind frame 111.

[0058] In some embodiments, the housing 1 includes a first side plate 11, a first air frame 111 disposed on the first side plate 11, an air outlet bracket 5 snapped into the first side plate 11, and / or the air outlet bracket 5 is connected to the first side plate 11 by fasteners.

[0059] This makes it easy to assemble and disassemble the air vent bracket 5 and the first side plate 11, thereby improving the efficiency of maintenance of the first drive component 3 and the second drive component 4 inside the housing 1.

[0060] For example, the air vent bracket 5 is snapped into the first side plate 11.

[0061] For example, the air vent bracket 5 is connected to the first side plate 11 via a threaded component.

[0062] For example, the air vent bracket 5 is snapped into the first side plate 11 for positioning, and then connected to the first side plate 11 by a threaded component.

[0063] In some embodiments, the housing 1 includes a first side plate 11, and the air vent bracket 5 is provided with a buckle 52 on the side facing the first side plate 11. A portion of the buckle 52 passes through the first air frame 111 and abuts against the side of the first side plate 11 facing the volute 21. The air vent bracket 5 is provided with a mounting hole 53, and the first side plate 11 is provided with a threaded hole. The air vent bracket 5 is connected to the first side plate 11 by a threaded component that passes through the mounting hole 53 and is threadedly connected to the threaded hole.

[0064] Therefore, the buckle 52 can first pass through the first air frame 111 and abut against the side of the first side plate 11 facing the volute 21, thereby positioning the air outlet bracket 5 on the first side plate 11. This facilitates the accurate alignment of the mounting hole 53 and the threaded component. Subsequently, the threaded component passes through the mounting hole 53 and is threadedly connected to the threaded hole, thereby connecting the air outlet bracket 5 to the first side plate 11. This arrangement effectively improves the connection strength between the air outlet bracket 5 and the first side plate 11.

[0065] For example, such as Figure 2 and Figure 4 As shown, there are two clips 52 arranged at intervals along the vertical direction of the housing 1. The two clips 52 are located at the first opposite ends of the air vent bracket 5 along its length. There are two mounting holes 53 arranged at intervals along the vertical direction of the housing 1. The two mounting holes 53 are located at the second opposite ends of the air vent bracket 5 along its length. The two clips 52 and the two mounting holes 53 are arranged at four corners.

[0066] In some embodiments, the housing 1 further includes a base plate 13, a third air frame 131 disposed on the base plate 13, and an air guide cavity 14 formed between the base plate 13 and the volute 21.

[0067] That is, the volute 21 and the base plate 13 form part of the wall of the air guide cavity 14, and no additional components are needed to form the air guide cavity 14. This simplifies the internal structure of the fresh air module and reduces the cost of the fresh air module.

[0068] For example, such as Figure 6 and Figure 7 As shown, the switching port 2131 is formed on the wall surface of the volute 21 facing the air guide cavity 14, and the air inlet 2111 of the air guide cavity 14 that connects to the middle channel 211 is also formed on the wall surface of the volute 21 facing the air guide cavity 14, thereby facilitating the simultaneous connection of the switching port 2131 and the air inlet 2111 with the air guide cavity 14.

[0069] In some embodiments, the fresh air module further includes a fourth damper 9 and a fourth drive member 10. The fourth damper 9 is movably installed inside the housing 1 and is used to open and close the third air frame 131. The fourth drive member 10 is connected to the fourth damper 9.

[0070] The third air frame 131 is connected to the indoor environment. In fresh air mode, the fourth air damper 9 closes the fourth air frame 131 to ensure that the intermediate channel 211 is connected to the switching channel 213 only through the air guide cavity 14 and the switching port 2131. In exhaust mode, the fourth air damper 9 opens the fourth air frame 131, thereby facilitating indoor air to enter the intermediate channel 211 of the volute 21 through the third air frame 131 and the air guide cavity 14, and then be discharged to the outside through the air outlet channel 212 and the first air frame 111.

[0071] For example, such as Figure 6 and Figure 7 As shown, the third air frame 131 is a grid structure provided on the bottom plate 13 of the housing 1, the fourth air damper 9 is pivotally connected to the bottom plate 13, and the fourth drive component 10 is a stepper motor. The fourth drive component 10 is installed on the bottom plate 13 and connected to the fourth air damper 9.

[0072] The fresh air device according to the embodiments of this utility model includes a fresh air module as described in any of the above embodiments.

[0073] The technical advantages of the fresh air device according to the present utility model embodiment are the same as the technical advantages of the fresh air module in the above embodiment, and will not be repeated here.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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 frame (111), a second air frame (121) and a third air frame (131); A fan (2) is disposed inside the housing (1) and includes a volute (21). The volute (21) is provided with an air outlet channel (212), a switching channel (213) and an intermediate channel (211). The air outlet channel (212) is connected to the first air frame (111). The switching channel (213) is connected to the second air frame (121). The intermediate channel (211) is connected to the third air frame (131) through a guide cavity (14). The wall of the switching channel (213) is provided with a switching port (2131) connected to the guide cavity (14). A first damper (6) and a second damper (7), wherein the first damper (6) is movably installed inside the housing (1) and is used to control the intermediate channel (211) to selectively communicate with the air outlet channel (212) or the switching channel (213); and the second damper (7) is movably installed inside the housing (1) and is used to open and close the switching port (2131). A first driving member (3) and a second driving member (4), wherein the first driving member (3) is connected to the first damper (6), and the second driving member (4) is connected to the second damper (7), and the first wind frame (111) avoids the first driving member (3) and the second driving member (4); An air vent bracket (5) is detachably connected to the housing (1) and the air vent bracket (5) shields at least one of the first drive member (3), the second drive member (4) and a portion of the air outlet channel (212).

2. The fresh air module according to claim 1, characterized in that, The fresh air module also includes a third air damper (8) and a third drive unit (110). The third air damper (8) is movably installed inside the housing (1). When the fresh air module is working, the third air damper (8) opens the second air frame (121). When the fresh air module stops working, the third air damper (8) closes the second air frame (121). The third drive unit (110) is connected to the third air damper (8). The housing (1) includes a first side plate (11), a first wind frame (111) is disposed on the first side plate (11), and the first side plate (11) covers the third drive member (110).

3. The fresh air module according to claim 2, characterized in that, The housing (1) also includes a base plate (13), the third wind frame (131) is disposed on the base plate (13), and the third drive component (110) is installed on the side of the volute (21) facing the base plate (13).

4. The fresh air module according to claim 1, characterized in that, The air outlet bracket (5) blocks the first drive member (3) and the second drive member (4), and the air outlet bracket (5) avoids the air outlet channel (212).

5. The fresh air module according to claim 1, characterized in that, The air outlet bracket (5) is provided with an air outlet (51), and the volute (21) is provided with a fourth air frame (22) on the side facing the first air frame (111). The fourth air frame (22) connects the air outlet (51) and the air outlet channel (212).

6. The fresh air module according to claim 5, characterized in that, The first drive member (3) and the second drive member (4) are installed on the side of the volute (21) facing the first wind frame (111), and each of the first drive member (3) and the second drive member (4) is arranged with the fourth wind frame (22) along the vertical direction of the housing (1).

7. The fresh air module according to claim 5, characterized in that, On the projection plane perpendicular to the extension direction of the first wind frame (111), the projections of each of the fourth wind frame (22), the first drive member (3), and the second drive member (4) coincide with the projection of the first wind frame (111).

8. The fresh air module according to claim 1, characterized in that, The housing (1) includes a first side plate (11), a first air frame (111) is disposed on the first side plate (11), the air outlet bracket (5) is snapped into the first side plate (11), and / or the air outlet bracket (5) is connected to the first side plate (11) by fasteners.

9. The fresh air module according to claim 1, characterized in that, The housing (1) includes a first side plate (11), and the air outlet bracket (5) is provided with a buckle (52) on the side facing the first side plate (11). A part of the buckle (52) passes through the first air frame (111) and abuts against the side of the first side plate (11) facing the volute (21). The air vent bracket (5) is provided with a mounting hole (53), and the first side plate (11) is provided with a threaded hole. The air vent bracket (5) is connected to the first side plate (11) by a threaded part that passes through the mounting hole (53) and is threadedly connected to the threaded hole.

10. The fresh air module according to claim 1, characterized in that, The housing (1) also includes a base plate (13), the third air frame (131) is disposed on the base plate (13), and the air guide cavity is formed between the base plate (13) and the volute (21).

11. The fresh air module according to claim 1, characterized in that, The fresh air module also includes a fourth air damper (9) and a fourth drive unit (10). The fourth air damper (9) is movably installed inside the housing (1) and is used to open and close the third air frame (131). The fourth drive unit (10) is connected to the fourth air damper (9).

12. A fresh air system, characterized in that, Includes the fresh air module according to any one of claims 1-11.

Images